1/*=============================================================================
2 Copyright (c) 2001-2011 Hartmut Kaiser
3 Copyright (c) 2001-2011 Joel de Guzman
4 Copyright (c) 2010 Bryce Lelbach
5
6 Distributed under the Boost Software License, Version 1.0. (See accompanying
7 file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
8==============================================================================*/
9#if !defined(BOOST_SPIRIT_ATTRIBUTES_FWD_OCT_01_2009_0715AM)
10#define BOOST_SPIRIT_ATTRIBUTES_FWD_OCT_01_2009_0715AM
11
12#if defined(_MSC_VER)
13#pragma once
14#endif
15
16#include <boost/config.hpp>
17#if (defined(__GNUC__) && (__GNUC__ < 4)) || \
18 (defined(__APPLE__) && defined(__INTEL_COMPILER))
19#include <boost/utility/enable_if.hpp>
20#endif
21#include <boost/spirit/home/support/unused.hpp>
22
23///////////////////////////////////////////////////////////////////////////////
24namespace boost { namespace spirit { namespace result_of
25{
26 // forward declaration only
27 template <typename Exposed, typename Attribute>
28 struct extract_from;
29
30 template <typename T, typename Attribute>
31 struct attribute_as;
32
33 template <typename Exposed, typename Transformed, typename Domain>
34 struct pre_transform;
35
36 template <typename T>
37 struct optional_value;
38
39 template <typename Container>
40 struct begin;
41
42 template <typename Container>
43 struct end;
44
45 template <typename Iterator>
46 struct deref;
47}}}
48
49///////////////////////////////////////////////////////////////////////////////
50namespace boost { namespace spirit { namespace traits
51{
52 ///////////////////////////////////////////////////////////////////////////
53 // Find out if T can be a strong substitute for Expected attribute
54 ///////////////////////////////////////////////////////////////////////////
55 template <typename T, typename Expected, typename Enable = void>
56 struct is_substitute;
57
58 ///////////////////////////////////////////////////////////////////////////
59 // Find out if T can be a weak substitute for Expected attribute
60 ///////////////////////////////////////////////////////////////////////////
61 template <typename T, typename Expected, typename Enable = void>
62 struct is_weak_substitute;
63
64 ///////////////////////////////////////////////////////////////////////////
65 // Determine if T is a proxy
66 ///////////////////////////////////////////////////////////////////////////
67 template <typename T, typename Enable = void>
68 struct is_proxy;
69
70 ///////////////////////////////////////////////////////////////////////////
71 // Retrieve the attribute type to use from the given type
72 //
73 // This is needed to extract the correct attribute type from proxy classes
74 // as utilized in FUSION_ADAPT_ADT et. al.
75 ///////////////////////////////////////////////////////////////////////////
76 template <typename Attribute, typename Enable = void>
77 struct attribute_type;
78
79 ///////////////////////////////////////////////////////////////////////////
80 // Retrieve the size of a fusion sequence (compile time)
81 ///////////////////////////////////////////////////////////////////////////
82 template <typename T>
83 struct sequence_size;
84
85 ///////////////////////////////////////////////////////////////////////////
86 // Retrieve the size of an attribute (runtime)
87 ///////////////////////////////////////////////////////////////////////////
88 template <typename Attribute, typename Enable = void>
89 struct attribute_size;
90
91 template <typename Attribute>
92 typename attribute_size<Attribute>::type
93 size(Attribute const& attr);
94
95 ///////////////////////////////////////////////////////////////////////////
96 // Determines how we pass attributes to semantic actions. This
97 // may be specialized. By default, all attributes are wrapped in
98 // a fusion sequence, because the attribute has to be treated as being
99 // a single value in any case (even if it actually already is a fusion
100 // sequence in its own).
101 ///////////////////////////////////////////////////////////////////////////
102 template <typename Component, typename Attribute, typename Enable = void>
103 struct pass_attribute;
104
105 ///////////////////////////////////////////////////////////////////////////
106 template <typename T, typename Enable = void>
107 struct optional_attribute;
108
109 ///////////////////////////////////////////////////////////////////////////
110 // Sometimes the user needs to transform the attribute types for certain
111 // attributes. This template can be used as a customization point, where
112 // the user is able specify specific transformation rules for any attribute
113 // type.
114 ///////////////////////////////////////////////////////////////////////////
115 template <typename Exposed, typename Transformed, typename Domain
116 , typename Enable = void>
117 struct transform_attribute;
118
119 ///////////////////////////////////////////////////////////////////////////
120 // Qi only
121 template <typename Attribute, typename Iterator, typename Enable = void>
122 struct assign_to_attribute_from_iterators;
123
124 template <typename Iterator, typename Attribute>
125 void assign_to(Iterator const& first, Iterator const& last, Attribute& attr);
126
127 template <typename Iterator>
128 void assign_to(Iterator const&, Iterator const&, unused_type);
129
130 template <typename Attribute, typename T, typename Enable = void>
131 struct assign_to_attribute_from_value;
132
133 template <typename Attribute, typename T, typename Enable = void>
134 struct assign_to_container_from_value;
135
136 template <typename T, typename Attribute>
137 void assign_to(T const& val, Attribute& attr);
138
139 template <typename T>
140 void assign_to(T const&, unused_type);
141
142 ///////////////////////////////////////////////////////////////////////////
143 // Karma only
144 template <typename Attribute, typename Exposed, typename Enable = void>
145 struct extract_from_attribute;
146
147 template <typename Attribute, typename Exposed, typename Enable = void>
148 struct extract_from_container;
149
150 template <typename Exposed, typename Attribute, typename Context>
151 typename spirit::result_of::extract_from<Exposed, Attribute>::type
152 extract_from(Attribute const& attr, Context& ctx
153#if (defined(__GNUC__) && (__GNUC__ < 4)) || \
154 (defined(__APPLE__) && defined(__INTEL_COMPILER))
155 , typename enable_if<traits::not_is_unused<Attribute> >::type* = NULL
156#endif
157 );
158
159 ///////////////////////////////////////////////////////////////////////////
160 // Karma only
161 template <typename T, typename Attribute, typename Enable = void>
162 struct attribute_as;
163
164 template <typename T, typename Attribute>
165 typename spirit::result_of::attribute_as<T, Attribute>::type
166 as(Attribute const& attr);
167
168 template <typename T, typename Attribute>
169 bool valid_as(Attribute const& attr);
170
171 ///////////////////////////////////////////////////////////////////////////
172 // return the type currently stored in the given variant
173 ///////////////////////////////////////////////////////////////////////////
174 template <typename T, typename Enable = void>
175 struct variant_which;
176
177 template <typename T>
178 int which(T const& v);
179
180 ///////////////////////////////////////////////////////////////////////////
181 // Determine, whether T is a variant like type
182 ///////////////////////////////////////////////////////////////////////////
183 template <typename T, typename Domain = unused_type, typename Enable = void>
184 struct not_is_variant;
185
186 ///////////////////////////////////////////////////////////////////////////
187 // Determine, whether T is a variant like type
188 ///////////////////////////////////////////////////////////////////////////
189 template <typename T, typename Domain = unused_type, typename Enable = void>
190 struct not_is_optional;
191
192 ///////////////////////////////////////////////////////////////////////////
193 // Clear data efficiently
194 ///////////////////////////////////////////////////////////////////////////
195 template <typename T, typename Enable = void>
196 struct clear_value;
197
198 ///////////////////////////////////////////////////////////////////////
199 // Determine the value type of the given container type
200 ///////////////////////////////////////////////////////////////////////
201 template <typename Container, typename Enable = void>
202 struct container_value;
203
204 template <typename Container, typename Enable = void>
205 struct container_iterator;
206
207 template <typename T, typename Enable = void>
208 struct is_container;
209
210 template <typename T, typename Enable = void>
211 struct is_iterator_range;
212
213 ///////////////////////////////////////////////////////////////////////////
214 template <typename T, typename Attribute, typename Context = unused_type
215 , typename Iterator = unused_type, typename Enable = void>
216 struct handles_container;
217
218 template <typename Container, typename ValueType, typename Attribute
219 , typename Sequence, typename Domain, typename Enable = void>
220 struct pass_through_container;
221
222 ///////////////////////////////////////////////////////////////////////////
223 // Qi only
224 template <typename Container, typename T, typename Enable = void>
225 struct push_back_container;
226
227 template <typename Container, typename Enable = void>
228 struct is_empty_container;
229
230 template <typename Container, typename Enable = void>
231 struct make_container_attribute;
232
233 ///////////////////////////////////////////////////////////////////////
234 // Determine the iterator type of the given container type
235 // Karma only
236 ///////////////////////////////////////////////////////////////////////
237 template <typename Container, typename Enable = void>
238 struct begin_container;
239
240 template <typename Container, typename Enable = void>
241 struct end_container;
242
243 template <typename Iterator, typename Enable = void>
244 struct deref_iterator;
245
246 template <typename Iterator, typename Enable = void>
247 struct next_iterator;
248
249 template <typename Iterator, typename Enable = void>
250 struct compare_iterators;
251
252 ///////////////////////////////////////////////////////////////////////////
253 // Print the given attribute of type T to the stream given as Out
254 ///////////////////////////////////////////////////////////////////////////
255 template <typename Out, typename T, typename Enable = void>
256 struct print_attribute_debug;
257
258 template <typename Out, typename T>
259 void print_attribute(Out&, T const&);
260
261 template <typename Out>
262 void print_attribute(Out&, unused_type);
263
264 ///////////////////////////////////////////////////////////////////////////
265 template <typename Char, typename Enable = void>
266 struct token_printer_debug;
267
268 template<typename Out, typename T>
269 void print_token(Out&, T const&);
270
271 ///////////////////////////////////////////////////////////////////////////
272 // Access attributes from a karma symbol table
273 ///////////////////////////////////////////////////////////////////////////
274 template <typename T, typename Attribute, typename Enable = void>
275 struct symbols_lookup;
276
277 template <typename Attribute, typename T, typename Enable = void>
278 struct symbols_value;
279
280 ///////////////////////////////////////////////////////////////////////////
281 // transform attribute types exposed from compound operator components
282 ///////////////////////////////////////////////////////////////////////////
283 template <typename Attribute, typename Domain>
284 struct alternative_attribute_transform;
285
286 template <typename Attribute, typename Domain>
287 struct sequence_attribute_transform;
288
289 template <typename Attribute, typename Domain>
290 struct permutation_attribute_transform;
291
292 template <typename Attribute, typename Domain>
293 struct sequential_or_attribute_transform;
294}}}
295
296#endif
297
298

source code of qtlocation/src/3rdparty/mapbox-gl-native/deps/boost/1.65.1/include/boost/spirit/home/support/attributes_fwd.hpp