1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
|
/*=============================================================================
Copyright (c) 2001-2011 Joel de Guzman
Copyright (c) 2006 Dan Marsden
Copyright (c) 2009-2010 Christopher Schmidt
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
==============================================================================*/
#include <boost/preprocessor/cat.hpp>
#ifdef BOOST_FUSION_REVERSE_FOLD
# ifdef BOOST_FUSION_ITER_FOLD
# define BOOST_FUSION_FOLD_NAME reverse_iter_fold
# else
# define BOOST_FUSION_FOLD_NAME reverse_fold
# endif
# define BOOST_FUSION_FOLD_IMPL_FIRST_IT_FUNCTION end
# define BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION prior
# define BOOST_FUSION_FOLD_IMPL_FIRST_IT_META_TRANSFORM(IT) \
typename fusion::result_of::prior<IT>::type
# define BOOST_FUSION_FOLD_IMPL_FIRST_IT_TRANSFORM(IT) fusion::prior(IT)
#else
# ifdef BOOST_FUSION_ITER_FOLD
# define BOOST_FUSION_FOLD_NAME iter_fold
# else
# define BOOST_FUSION_FOLD_NAME fold
# endif
# define BOOST_FUSION_FOLD_IMPL_FIRST_IT_FUNCTION begin
# define BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION next
# define BOOST_FUSION_FOLD_IMPL_FIRST_IT_META_TRANSFORM(IT) IT
# define BOOST_FUSION_FOLD_IMPL_FIRST_IT_TRANSFORM(IT) IT
#endif
#ifdef BOOST_FUSION_ITER_FOLD
# define BOOST_FUSION_FOLD_IMPL_INVOKE_IT_META_TRANSFORM(IT) IT&
# define BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(IT) IT
#else
# define BOOST_FUSION_FOLD_IMPL_INVOKE_IT_META_TRANSFORM(IT) \
typename fusion::result_of::deref<IT>::type
# define BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(IT) fusion::deref(IT)
#endif
namespace boost { namespace fusion
{
namespace detail
{
template<typename State, typename It, typename F>
struct BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)
: boost::result_of<
F(
typename add_reference<typename add_const<State>::type>::type,
BOOST_FUSION_FOLD_IMPL_INVOKE_IT_META_TRANSFORM(It))
>
{};
template<typename Result,int N>
struct BOOST_PP_CAT(unrolled_,BOOST_FUSION_FOLD_NAME)
{
template<typename State, typename It0, typename F>
static Result
call(State const& state,It0 const& it0,F f)
{
typedef typename
result_of::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION<
It0 const
>::type
It1;
It1 it1 = fusion::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION(it0);
typedef typename
result_of::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION<
It1
>::type
It2;
It2 it2 = fusion::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION(it1);
typedef typename
result_of::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION<
It2
>::type
It3;
It3 it3 = fusion::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION(it2);
typedef typename BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<State,It0,F>::type State1;
State1 const state1=f(state,BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it0));
typedef typename BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<State1,It1,F>::type State2;
State2 const state2=f(state1,BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it1));
typedef typename BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<State2,It2,F>::type State3;
State3 const state3=f(state2,BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it2));
return BOOST_PP_CAT(unrolled_,BOOST_FUSION_FOLD_NAME)<
Result
, N-4
>::call(
f(state3,BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it3)),
fusion::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION(it3),
f);
}
};
template<typename Result>
struct BOOST_PP_CAT(unrolled_,BOOST_FUSION_FOLD_NAME)<Result,3>
{
template<typename State, typename It0, typename F>
static Result
call(State const& state,It0 const& it0,F f)
{
typedef typename
result_of::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION<
It0 const
>::type
It1;
It1 it1 = fusion::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION(it0);
typedef typename
result_of::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION<
It1
>::type
It2;
It2 it2 = fusion::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION(it1);
typedef typename BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<State,It0,F>::type State1;
State1 const state1=f(state,BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it0));
typedef typename BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<State1,It1,F>::type State2;
State2 const state2=f(state1,BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it1));
return f(state2,BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it2));
}
};
template<typename Result>
struct BOOST_PP_CAT(unrolled_,BOOST_FUSION_FOLD_NAME)<Result,2>
{
template<typename State, typename It0, typename F>
static Result
call(State const& state,It0 const& it0,F f)
{
typedef typename BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<State,It0,F>::type State1;
State1 const state1=f(state,BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it0));
return f(
state1,
BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(
fusion::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION(it0)));
}
};
template<typename Result>
struct BOOST_PP_CAT(unrolled_,BOOST_FUSION_FOLD_NAME)<Result,1>
{
template<typename State, typename It0, typename F>
static Result
call(State const& state,It0 const& it0,F f)
{
return f(state,
BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it0));
}
};
template<typename Result>
struct BOOST_PP_CAT(unrolled_,BOOST_FUSION_FOLD_NAME)<Result,0>
{
template<typename State, typename It0, typename F>
static Result
call(State const& state,It0 const& it0, F)
{
return static_cast<Result>(state);
}
};
template<typename StateRef, typename It0, typename F, int N>
struct BOOST_PP_CAT(result_of_unrolled_,BOOST_FUSION_FOLD_NAME)
{
typedef typename
BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<
StateRef
, It0 const
, F
>::type
rest1;
typedef typename
result_of::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION<
It0 const
>::type
it1;
typedef typename
BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<
rest1
, it1
, F
>::type
rest2;
typedef typename
result_of::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION<it1>::type
it2;
typedef typename
BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<
rest2
, it2
, F
>::type
rest3;
typedef typename
result_of::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION<it2>::type
it3;
typedef typename
BOOST_PP_CAT(result_of_unrolled_,BOOST_FUSION_FOLD_NAME)<
typename BOOST_PP_CAT(
BOOST_FUSION_FOLD_NAME, _lvalue_state)<
rest3
, it3
, F
>::type
, typename result_of::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION<
it3
>::type
, F
, N-4
>::type
type;
};
template<typename StateRef, typename It0, typename F>
struct BOOST_PP_CAT(result_of_unrolled_,BOOST_FUSION_FOLD_NAME)<
StateRef
, It0
, F
, 3
>
{
typedef typename
BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<
StateRef
, It0 const
, F
>::type
rest1;
typedef typename
result_of::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION<
It0 const
>::type
it1;
typedef typename
BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<
typename BOOST_PP_CAT(
BOOST_FUSION_FOLD_NAME, _lvalue_state)<
rest1
, it1
, F
>::type
, typename result_of::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION<
it1 const
>::type const
, F
>::type
type;
};
template<typename StateRef, typename It0, typename F>
struct BOOST_PP_CAT(result_of_unrolled_,BOOST_FUSION_FOLD_NAME)<
StateRef
, It0
, F
, 2
>
: BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<
typename BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<
StateRef
, It0 const
, F
>::type
, typename result_of::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION<
It0 const
>::type const
, F
>
{};
template<typename StateRef, typename It0, typename F>
struct BOOST_PP_CAT(result_of_unrolled_,BOOST_FUSION_FOLD_NAME)<
StateRef
, It0
, F
, 1
>
: BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<
StateRef
, It0 const
, F
>
{};
template<typename StateRef, typename It0, typename F>
struct BOOST_PP_CAT(result_of_unrolled_,BOOST_FUSION_FOLD_NAME)<
StateRef
, It0
, F
, 0
>
{
typedef StateRef type;
};
template<typename StateRef, typename It0, typename F, int SeqSize>
struct BOOST_PP_CAT(result_of_first_unrolled,BOOST_FUSION_FOLD_NAME)
{
typedef typename
BOOST_PP_CAT(result_of_unrolled_,BOOST_FUSION_FOLD_NAME)<
typename boost::result_of<
F(
StateRef,
BOOST_FUSION_FOLD_IMPL_INVOKE_IT_META_TRANSFORM(
It0 const)
)
>::type
, typename result_of::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION<
It0 const
>::type
, F
, SeqSize-1
>::type
type;
};
template<int SeqSize, typename StateRef, typename Seq, typename F>
struct BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME,_impl)
{
typedef typename
BOOST_PP_CAT(
result_of_first_unrolled,BOOST_FUSION_FOLD_NAME)<
StateRef
, BOOST_FUSION_FOLD_IMPL_FIRST_IT_META_TRANSFORM(
typename result_of::BOOST_FUSION_FOLD_IMPL_FIRST_IT_FUNCTION<Seq>::type
)
, F
, SeqSize
>::type
type;
static type
call(StateRef state, Seq& seq, F f)
{
typedef
BOOST_PP_CAT(unrolled_,BOOST_FUSION_FOLD_NAME)<
type
, SeqSize
>
unrolled_impl;
return unrolled_impl::call(
state,
BOOST_FUSION_FOLD_IMPL_FIRST_IT_TRANSFORM(
fusion::BOOST_FUSION_FOLD_IMPL_FIRST_IT_FUNCTION(seq)),
f);
}
};
template<typename StateRef, typename Seq, typename F>
struct BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME,_impl)<0,StateRef,Seq,F>
{
typedef StateRef type;
static StateRef
call(StateRef state, Seq&, F)
{
return static_cast<StateRef>(state);
}
};
template<typename Seq, typename State, typename F, bool IsSegmented>
struct BOOST_PP_CAT(result_of_, BOOST_FUSION_FOLD_NAME)
: BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME,_impl)<
result_of::size<Seq>::value
, typename add_reference<
typename add_const<State>::type
>::type
, Seq
, F
>
{};
}
namespace result_of
{
template<typename Seq, typename State, typename F>
struct BOOST_FUSION_FOLD_NAME
: detail::BOOST_PP_CAT(result_of_, BOOST_FUSION_FOLD_NAME)<
Seq
, State
, F
, traits::is_segmented<Seq>::type::value
>
{};
}
template<typename Seq, typename State, typename F>
inline typename result_of::BOOST_FUSION_FOLD_NAME<
Seq
, State const
, F
>::type
BOOST_FUSION_FOLD_NAME(Seq& seq, State const& state, F f)
{
return result_of::BOOST_FUSION_FOLD_NAME<Seq,State const,F>::call(
state,
seq,
f);
}
template<typename Seq, typename State, typename F>
inline typename result_of::BOOST_FUSION_FOLD_NAME<
Seq const
, State const
, F
>::type
BOOST_FUSION_FOLD_NAME(Seq const& seq, State const& state, F f)
{
return result_of::BOOST_FUSION_FOLD_NAME<Seq const,State const,F>::call(
state,
seq,
f);
}
template<typename Seq, typename State, typename F>
inline typename result_of::BOOST_FUSION_FOLD_NAME<
Seq
, State const
, F
>::type
BOOST_FUSION_FOLD_NAME(Seq& seq, State& state, F f)
{
return result_of::BOOST_FUSION_FOLD_NAME<Seq,State,F>::call(
state,
seq,
f);
}
template<typename Seq, typename State, typename F>
inline typename result_of::BOOST_FUSION_FOLD_NAME<
Seq const
, State const
, F
>::type
BOOST_FUSION_FOLD_NAME(Seq const& seq, State& state, F f)
{
return result_of::BOOST_FUSION_FOLD_NAME<Seq const,State,F>::call(
state,
seq,
f);
}
}}
#undef BOOST_FUSION_FOLD_NAME
#undef BOOST_FUSION_FOLD_IMPL_FIRST_IT_FUNCTION
#undef BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION
#undef BOOST_FUSION_FOLD_IMPL_FIRST_IT_META_TRANSFORM
#undef BOOST_FUSION_FOLD_IMPL_FIRST_IT_TRANSFORM
#undef BOOST_FUSION_FOLD_IMPL_INVOKE_IT_META_TRANSFORM
#undef BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM
|
Swift