comparison DEPENDENCIES/generic/include/boost/spirit/home/qi/directive/lexeme.hpp @ 16:2665513ce2d3

Add boost headers
author Chris Cannam
date Tue, 05 Aug 2014 11:11:38 +0100
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children c530137014c0
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15:663ca0da4350 16:2665513ce2d3
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(SPIRIT_LEXEME_MARCH_24_2007_0802AM)
8 #define SPIRIT_LEXEME_MARCH_24_2007_0802AM
9
10 #if defined(_MSC_VER)
11 #pragma once
12 #endif
13
14 #include <boost/spirit/home/qi/meta_compiler.hpp>
15 #include <boost/spirit/home/qi/skip_over.hpp>
16 #include <boost/spirit/home/qi/parser.hpp>
17 #include <boost/spirit/home/qi/detail/unused_skipper.hpp>
18 #include <boost/spirit/home/support/unused.hpp>
19 #include <boost/spirit/home/support/common_terminals.hpp>
20 #include <boost/spirit/home/qi/detail/attributes.hpp>
21 #include <boost/spirit/home/support/info.hpp>
22 #include <boost/spirit/home/support/handles_container.hpp>
23
24 namespace boost { namespace spirit
25 {
26 ///////////////////////////////////////////////////////////////////////////
27 // Enablers
28 ///////////////////////////////////////////////////////////////////////////
29 template <>
30 struct use_directive<qi::domain, tag::lexeme> // enables lexeme
31 : mpl::true_ {};
32 }}
33
34 namespace boost { namespace spirit { namespace qi
35 {
36 #ifndef BOOST_SPIRIT_NO_PREDEFINED_TERMINALS
37 using spirit::lexeme;
38 #endif
39 using spirit::lexeme_type;
40
41 template <typename Subject>
42 struct lexeme_directive : unary_parser<lexeme_directive<Subject> >
43 {
44 typedef Subject subject_type;
45 lexeme_directive(Subject const& subject_)
46 : subject(subject_) {}
47
48 template <typename Context, typename Iterator>
49 struct attribute
50 {
51 typedef typename
52 traits::attribute_of<subject_type, Context, Iterator>::type
53 type;
54 };
55
56 template <typename Iterator, typename Context
57 , typename Skipper, typename Attribute>
58 bool parse(Iterator& first, Iterator const& last
59 , Context& context, Skipper const& skipper
60 , Attribute& attr_) const
61 {
62 qi::skip_over(first, last, skipper);
63 return subject.parse(first, last, context
64 , detail::unused_skipper<Skipper>(skipper), attr_);
65 }
66
67 template <typename Context>
68 info what(Context& context) const
69 {
70 return info("lexeme", subject.what(context));
71
72 }
73
74 Subject subject;
75 };
76
77 ///////////////////////////////////////////////////////////////////////////
78 // Parser generators: make_xxx function (objects)
79 ///////////////////////////////////////////////////////////////////////////
80 template <typename Subject, typename Modifiers>
81 struct make_directive<tag::lexeme, Subject, Modifiers>
82 {
83 typedef lexeme_directive<Subject> result_type;
84 result_type operator()(unused_type, Subject const& subject, unused_type) const
85 {
86 return result_type(subject);
87 }
88 };
89 }}}
90
91 namespace boost { namespace spirit { namespace traits
92 {
93 ///////////////////////////////////////////////////////////////////////////
94 template <typename Subject>
95 struct has_semantic_action<qi::lexeme_directive<Subject> >
96 : unary_has_semantic_action<Subject> {};
97
98 ///////////////////////////////////////////////////////////////////////////
99 template <typename Subject, typename Attribute, typename Context
100 , typename Iterator>
101 struct handles_container<qi::lexeme_directive<Subject>, Attribute
102 , Context, Iterator>
103 : unary_handles_container<Subject, Attribute, Context, Iterator> {};
104 }}}
105
106 #endif