]>
Commit | Line | Data |
---|---|---|
7c673cae FG |
1 | // Copyright (c) 2009 Chris Hoeppler |
2 | // | |
3 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | |
4 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
5 | ||
6 | #if !defined(BOOST_SPIRIT_REPOSITORY_QI_CONFIX_JUN_22_2009_1041AM) | |
7 | #define BOOST_SPIRIT_REPOSITORY_QI_CONFIX_JUN_22_2009_1041AM | |
8 | ||
9 | #if defined(_MSC_VER) | |
10 | #pragma once | |
11 | #endif | |
12 | ||
13 | #include <boost/spirit/home/qi/domain.hpp> | |
14 | #include <boost/spirit/home/qi/meta_compiler.hpp> | |
15 | #include <boost/spirit/home/qi/auxiliary/lazy.hpp> | |
16 | #include <boost/spirit/home/support/common_terminals.hpp> | |
17 | #include <boost/spirit/home/support/info.hpp> | |
18 | #include <boost/spirit/home/support/unused.hpp> | |
19 | #include <boost/spirit/home/qi/detail/attributes.hpp> | |
20 | ||
21 | #include <boost/spirit/repository/home/support/confix.hpp> | |
22 | ||
23 | #include <boost/fusion/include/vector.hpp> | |
24 | #include <boost/mpl/or.hpp> | |
25 | ||
26 | /////////////////////////////////////////////////////////////////////////////// | |
27 | namespace boost { namespace spirit | |
28 | { | |
29 | /////////////////////////////////////////////////////////////////////////// | |
30 | // Enablers | |
31 | /////////////////////////////////////////////////////////////////////////// | |
32 | ||
33 | // enables confix(..., ...)[] | |
34 | template <typename Prefix, typename Suffix> | |
35 | struct use_directive<qi::domain | |
36 | , terminal_ex<repository::tag::confix, fusion::vector2<Prefix, Suffix> > > | |
37 | : mpl::true_ {}; | |
38 | ||
39 | // enables *lazy* confix(..., ...)[] | |
40 | template <> | |
41 | struct use_lazy_directive<qi::domain, repository::tag::confix, 2> | |
42 | : mpl::true_ {}; | |
43 | ||
44 | }} | |
45 | ||
46 | /////////////////////////////////////////////////////////////////////////////// | |
47 | namespace boost { namespace spirit { namespace repository { namespace qi | |
48 | { | |
49 | using repository::confix_type; | |
50 | using repository::confix; | |
51 | ||
52 | /////////////////////////////////////////////////////////////////////////// | |
53 | // the confix() generated parser | |
54 | template <typename Subject, typename Prefix, typename Suffix> | |
55 | struct confix_parser | |
56 | : spirit::qi::unary_parser<confix_parser<Subject, Prefix, Suffix> > | |
57 | { | |
58 | typedef Subject subject_type; | |
59 | ||
60 | template <typename Context, typename Iterator> | |
61 | struct attribute | |
62 | : traits::attribute_of<subject_type, Context, Iterator> | |
63 | {}; | |
64 | ||
65 | confix_parser(Subject const& subject, Prefix const& prefix | |
66 | , Suffix const& suffix) | |
67 | : subject(subject), prefix(prefix), suffix(suffix) {} | |
68 | ||
69 | template <typename Iterator, typename Context | |
70 | , typename Skipper, typename Attribute> | |
71 | bool parse(Iterator& first, Iterator const& last | |
72 | , Context& context, Skipper const& skipper | |
73 | , Attribute& attr) const | |
74 | { | |
75 | Iterator iter = first; | |
76 | ||
77 | if (!(prefix.parse(iter, last, context, skipper, unused) && | |
78 | subject.parse(iter, last, context, skipper, attr) && | |
79 | suffix.parse(iter, last, context, skipper, unused))) | |
80 | { | |
81 | return false; | |
82 | } | |
83 | ||
84 | first = iter; | |
85 | return true; | |
86 | } | |
87 | ||
88 | template <typename Context> | |
89 | info what(Context const& ctx) const | |
90 | { | |
91 | return info("confix", subject.what(ctx)); | |
92 | } | |
93 | ||
94 | Subject subject; | |
95 | Prefix prefix; | |
96 | Suffix suffix; | |
97 | }; | |
98 | ||
99 | }}}} | |
100 | ||
101 | /////////////////////////////////////////////////////////////////////////////// | |
102 | namespace boost { namespace spirit { namespace qi | |
103 | { | |
104 | /////////////////////////////////////////////////////////////////////////// | |
105 | // Parser generators: make_xxx function (objects) | |
106 | /////////////////////////////////////////////////////////////////////////// | |
107 | ||
108 | // creates confix(..., ...)[] directive | |
109 | template <typename Prefix, typename Suffix, typename Subject | |
110 | , typename Modifiers> | |
111 | struct make_directive< | |
112 | terminal_ex<repository::tag::confix, fusion::vector2<Prefix, Suffix> > | |
113 | , Subject, Modifiers> | |
114 | { | |
115 | typedef typename | |
116 | result_of::compile<qi::domain, Prefix, Modifiers>::type | |
117 | prefix_type; | |
118 | typedef typename | |
119 | result_of::compile<qi::domain, Suffix, Modifiers>::type | |
120 | suffix_type; | |
121 | ||
122 | typedef repository::qi::confix_parser< | |
123 | Subject, prefix_type, suffix_type> result_type; | |
124 | ||
125 | template <typename Terminal> | |
126 | result_type operator()(Terminal const& term, Subject const& subject | |
127 | , Modifiers const& modifiers) const | |
128 | { | |
129 | return result_type(subject | |
130 | , compile<qi::domain>(fusion::at_c<0>(term.args), modifiers) | |
131 | , compile<qi::domain>(fusion::at_c<1>(term.args), modifiers)); | |
132 | } | |
133 | }; | |
134 | ||
135 | }}} | |
136 | ||
137 | namespace boost { namespace spirit { namespace traits | |
138 | { | |
139 | template <typename Subject, typename Prefix, typename Suffix> | |
140 | struct has_semantic_action< | |
141 | repository::qi::confix_parser<Subject, Prefix, Suffix> > | |
142 | : mpl::or_< | |
143 | has_semantic_action<Subject> | |
144 | , has_semantic_action<Prefix> | |
145 | , has_semantic_action<Suffix> | |
146 | > {}; | |
147 | }}} | |
148 | ||
149 | #endif | |
150 |