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1 | // Copyright (c) 2001-2011 Hartmut Kaiser |
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_LEX_PLAIN_RAW_TOKEN_JUN_03_2011_0853PM) | |
7 | #define BOOST_SPIRIT_LEX_PLAIN_RAW_TOKEN_JUN_03_2011_0853PM | |
8 | ||
9 | #if defined(_MSC_VER) | |
10 | #pragma once | |
11 | #endif | |
12 | ||
13 | #include <boost/spirit/home/support/info.hpp> | |
14 | #include <boost/spirit/home/qi/detail/attributes.hpp> | |
15 | #include <boost/spirit/home/support/common_terminals.hpp> | |
16 | #include <boost/spirit/home/support/handles_container.hpp> | |
17 | #include <boost/spirit/home/qi/skip_over.hpp> | |
18 | #include <boost/spirit/home/qi/domain.hpp> | |
19 | #include <boost/spirit/home/qi/parser.hpp> | |
20 | #include <boost/spirit/home/qi/meta_compiler.hpp> | |
21 | #include <boost/spirit/home/qi/detail/assign_to.hpp> | |
22 | #include <boost/range/iterator_range.hpp> | |
23 | #include <boost/fusion/include/vector.hpp> | |
24 | #include <boost/fusion/include/at.hpp> | |
25 | #include <boost/mpl/or.hpp> | |
26 | #include <boost/type_traits/is_integral.hpp> | |
27 | #include <boost/type_traits/is_enum.hpp> | |
28 | #include <boost/lexical_cast.hpp> | |
29 | ||
30 | namespace boost { namespace spirit | |
31 | { | |
32 | /////////////////////////////////////////////////////////////////////////// | |
33 | // Enablers | |
34 | /////////////////////////////////////////////////////////////////////////// | |
35 | ||
36 | // enables raw_token | |
37 | template <> | |
38 | struct use_terminal<qi::domain, tag::raw_token> | |
39 | : mpl::true_ {}; | |
40 | ||
41 | // enables raw_token(id) | |
42 | template <typename A0> | |
43 | struct use_terminal<qi::domain | |
44 | , terminal_ex<tag::raw_token, fusion::vector1<A0> > | |
45 | > : mpl::or_<is_integral<A0>, is_enum<A0> > {}; | |
46 | ||
47 | // enables *lazy* raw_token(id) | |
48 | template <> | |
49 | struct use_lazy_terminal< | |
50 | qi::domain, tag::raw_token, 1 | |
51 | > : mpl::true_ {}; | |
52 | }} | |
53 | ||
54 | namespace boost { namespace spirit { namespace qi | |
55 | { | |
56 | #ifndef BOOST_SPIRIT_NO_PREDEFINED_TERMINALS | |
57 | using spirit::raw_token; | |
58 | #endif | |
59 | using spirit::raw_token_type; | |
60 | ||
61 | /////////////////////////////////////////////////////////////////////////// | |
62 | template <typename TokenId> | |
63 | struct plain_raw_token | |
64 | : primitive_parser<plain_raw_token<TokenId> > | |
65 | { | |
66 | template <typename Context, typename Iterator> | |
67 | struct attribute | |
68 | { | |
69 | typedef unused_type type; | |
70 | }; | |
71 | ||
72 | plain_raw_token(TokenId const& id) | |
73 | : id(id) {} | |
74 | ||
75 | template <typename Iterator, typename Context | |
76 | , typename Skipper, typename Attribute> | |
77 | bool parse(Iterator& first, Iterator const& last | |
78 | , Context& /*context*/, Skipper const& skipper | |
79 | , Attribute& attr) const | |
80 | { | |
81 | qi::skip_over(first, last, skipper); // always do a pre-skip | |
82 | ||
83 | if (first != last) { | |
84 | // simply match the token id with the id this component has | |
85 | // been initialized with | |
86 | ||
87 | typedef typename | |
88 | boost::detail::iterator_traits<Iterator>::value_type | |
89 | token_type; | |
90 | typedef typename token_type::id_type id_type; | |
91 | ||
92 | token_type const& t = *first; | |
93 | if (id_type(~0) == id_type(id) || id_type(id) == t.id()) { | |
94 | spirit::traits::assign_to(t, attr); | |
95 | ++first; | |
96 | return true; | |
97 | } | |
98 | } | |
99 | return false; | |
100 | } | |
101 | ||
102 | template <typename Context> | |
103 | info what(Context& /*context*/) const | |
104 | { | |
105 | return info("raw_token", | |
106 | "raw_token(" + boost::lexical_cast<utf8_string>(id) + ")"); | |
107 | } | |
108 | ||
109 | TokenId id; | |
110 | }; | |
111 | ||
112 | /////////////////////////////////////////////////////////////////////////// | |
113 | // Parser generators: make_xxx function (objects) | |
114 | /////////////////////////////////////////////////////////////////////////// | |
115 | template <typename Modifiers> | |
116 | struct make_primitive<tag::raw_token, Modifiers> | |
117 | { | |
118 | typedef plain_raw_token<std::size_t> result_type; | |
119 | ||
120 | result_type operator()(unused_type, unused_type) const | |
121 | { | |
122 | return result_type(std::size_t(~0)); | |
123 | } | |
124 | }; | |
125 | ||
126 | template <typename Modifiers, typename TokenId> | |
127 | struct make_primitive<terminal_ex<tag::raw_token, fusion::vector1<TokenId> > | |
128 | , Modifiers> | |
129 | { | |
130 | typedef plain_raw_token<TokenId> result_type; | |
131 | ||
132 | template <typename Terminal> | |
133 | result_type operator()(Terminal const& term, unused_type) const | |
134 | { | |
135 | return result_type(fusion::at_c<0>(term.args)); | |
136 | } | |
137 | }; | |
138 | }}} | |
139 | ||
140 | namespace boost { namespace spirit { namespace traits | |
141 | { | |
142 | /////////////////////////////////////////////////////////////////////////// | |
143 | template<typename Idtype, typename Attr, typename Context, typename Iterator> | |
144 | struct handles_container<qi::plain_raw_token<Idtype>, Attr, Context, Iterator> | |
145 | : mpl::true_ | |
146 | {}; | |
147 | }}} | |
148 | ||
149 | #endif |