source: Daodan/MSYS2/mingw32/include/c++/11.2.0/debug/formatter.h@ 1181

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1// Debug-mode error formatting implementation -*- C++ -*-
2
3// Copyright (C) 2003-2021 Free Software Foundation, Inc.
4//
5// This file is part of the GNU ISO C++ Library. This library is free
6// software; you can redistribute it and/or modify it under the
7// terms of the GNU General Public License as published by the
8// Free Software Foundation; either version 3, or (at your option)
9// any later version.
10
11// This library is distributed in the hope that it will be useful,
12// but WITHOUT ANY WARRANTY; without even the implied warranty of
13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14// GNU General Public License for more details.
15
16// Under Section 7 of GPL version 3, you are granted additional
17// permissions described in the GCC Runtime Library Exception, version
18// 3.1, as published by the Free Software Foundation.
19
20// You should have received a copy of the GNU General Public License and
21// a copy of the GCC Runtime Library Exception along with this program;
22// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23// <http://www.gnu.org/licenses/>.
24
25/** @file debug/formatter.h
26 * This file is a GNU debug extension to the Standard C++ Library.
27 */
28
29#ifndef _GLIBCXX_DEBUG_FORMATTER_H
30#define _GLIBCXX_DEBUG_FORMATTER_H 1
31
32#include <bits/c++config.h>
33
34#if __cpp_rtti
35# include <typeinfo>
36# define _GLIBCXX_TYPEID(_Type) &typeid(_Type)
37#else
38namespace std
39{
40 class type_info;
41}
42# define _GLIBCXX_TYPEID(_Type) 0
43#endif
44
45#if __cplusplus >= 201103L
46namespace __gnu_cxx
47{
48_GLIBCXX_BEGIN_NAMESPACE_VERSION
49
50template<typename _Iterator, typename _Container>
51 class __normal_iterator;
52
53_GLIBCXX_END_NAMESPACE_VERSION
54}
55
56namespace std
57{
58_GLIBCXX_BEGIN_NAMESPACE_VERSION
59
60template<typename _Iterator>
61 class reverse_iterator;
62
63template<typename _Iterator>
64 class move_iterator;
65
66_GLIBCXX_END_NAMESPACE_VERSION
67}
68#endif
69
70namespace __gnu_debug
71{
72 using std::type_info;
73
74 template<typename _Iterator>
75 _GLIBCXX_CONSTEXPR
76 bool __check_singular(_Iterator const&);
77
78 class _Safe_sequence_base;
79
80 template<typename _Iterator, typename _Sequence, typename _Category>
81 class _Safe_iterator;
82
83 template<typename _Iterator, typename _Sequence>
84 class _Safe_local_iterator;
85
86 template<typename _Sequence>
87 class _Safe_sequence;
88
89 enum _Debug_msg_id
90 {
91 // General checks
92 __msg_valid_range,
93 __msg_insert_singular,
94 __msg_insert_different,
95 __msg_erase_bad,
96 __msg_erase_different,
97 __msg_subscript_oob,
98 __msg_empty,
99 __msg_unpartitioned,
100 __msg_unpartitioned_pred,
101 __msg_unsorted,
102 __msg_unsorted_pred,
103 __msg_not_heap,
104 __msg_not_heap_pred,
105 // std::bitset checks
106 __msg_bad_bitset_write,
107 __msg_bad_bitset_read,
108 __msg_bad_bitset_flip,
109 // std::list checks
110 __msg_self_splice,
111 __msg_splice_alloc,
112 __msg_splice_bad,
113 __msg_splice_other,
114 __msg_splice_overlap,
115 // iterator checks
116 __msg_init_singular,
117 __msg_init_copy_singular,
118 __msg_init_const_singular,
119 __msg_copy_singular,
120 __msg_bad_deref,
121 __msg_bad_inc,
122 __msg_bad_dec,
123 __msg_iter_subscript_oob,
124 __msg_advance_oob,
125 __msg_retreat_oob,
126 __msg_iter_compare_bad,
127 __msg_compare_different,
128 __msg_iter_order_bad,
129 __msg_order_different,
130 __msg_distance_bad,
131 __msg_distance_different,
132 // istream_iterator
133 __msg_deref_istream,
134 __msg_inc_istream,
135 // ostream_iterator
136 __msg_output_ostream,
137 // istreambuf_iterator
138 __msg_deref_istreambuf,
139 __msg_inc_istreambuf,
140 // forward_list
141 __msg_insert_after_end,
142 __msg_erase_after_bad,
143 __msg_valid_range2,
144 // unordered container local iterators
145 __msg_local_iter_compare_bad,
146 __msg_non_empty_range,
147 // self move assign (no longer used)
148 __msg_self_move_assign,
149 // unordered container buckets
150 __msg_bucket_index_oob,
151 __msg_valid_load_factor,
152 // others
153 __msg_equal_allocs,
154 __msg_insert_range_from_self,
155 __msg_irreflexive_ordering
156 };
157
158 class _Error_formatter
159 {
160 // Tags denoting the type of parameter for construction
161 struct _Is_iterator { };
162 struct _Is_iterator_value_type { };
163 struct _Is_sequence { };
164 struct _Is_instance { };
165
166 public:
167 /// Whether an iterator is constant, mutable, or unknown
168 enum _Constness
169 {
170 __unknown_constness,
171 __const_iterator,
172 __mutable_iterator,
173 __last_constness
174 };
175
176 // The state of the iterator (fine-grained), if we know it.
177 enum _Iterator_state
178 {
179 __unknown_state,
180 __singular, // singular, may still be attached to a sequence
181 __begin, // dereferenceable, and at the beginning
182 __middle, // dereferenceable, not at the beginning
183 __end, // past-the-end, may be at beginning if sequence empty
184 __before_begin, // before begin
185 __rbegin, // dereferenceable, and at the reverse-beginning
186 __rmiddle, // reverse-dereferenceable, not at the reverse-beginning
187 __rend, // reverse-past-the-end
188 __last_state
189 };
190
191 // A parameter that may be referenced by an error message
192 struct _Parameter
193 {
194 enum
195 {
196 __unused_param,
197 __iterator,
198 __sequence,
199 __integer,
200 __string,
201 __instance,
202 __iterator_value_type
203 } _M_kind;
204
205 struct _Type
206 {
207 const char* _M_name;
208 const type_info* _M_type;
209 };
210
211 struct _Instance : _Type
212 {
213 const void* _M_address;
214 };
215
216 union
217 {
218 // When _M_kind == __iterator
219 struct : _Instance
220 {
221 _Constness _M_constness;
222 _Iterator_state _M_state;
223 const void* _M_sequence;
224 const type_info* _M_seq_type;
225 } _M_iterator;
226
227 // When _M_kind == __sequence
228 _Instance _M_sequence;
229
230 // When _M_kind == __integer
231 struct
232 {
233 const char* _M_name;
234 long _M_value;
235 } _M_integer;
236
237 // When _M_kind == __string
238 struct
239 {
240 const char* _M_name;
241 const char* _M_value;
242 } _M_string;
243
244 // When _M_kind == __instance
245 _Instance _M_instance;
246
247 // When _M_kind == __iterator_value_type
248 _Type _M_iterator_value_type;
249 } _M_variant;
250
251 _Parameter() : _M_kind(__unused_param), _M_variant() { }
252
253 _Parameter(long __value, const char* __name)
254 : _M_kind(__integer), _M_variant()
255 {
256 _M_variant._M_integer._M_name = __name;
257 _M_variant._M_integer._M_value = __value;
258 }
259
260 _Parameter(const char* __value, const char* __name)
261 : _M_kind(__string), _M_variant()
262 {
263 _M_variant._M_string._M_name = __name;
264 _M_variant._M_string._M_value = __value;
265 }
266
267 template<typename _Iterator, typename _Sequence, typename _Category>
268 _Parameter(_Safe_iterator<_Iterator, _Sequence, _Category> const& __it,
269 const char* __name, _Is_iterator)
270 : _M_kind(__iterator), _M_variant()
271 {
272 _M_variant._M_iterator._M_name = __name;
273 _M_variant._M_iterator._M_address = std::__addressof(__it);
274 _M_variant._M_iterator._M_type = _GLIBCXX_TYPEID(_Iterator);
275 _M_variant._M_iterator._M_constness =
276 __it._S_constant() ? __const_iterator : __mutable_iterator;
277 _M_variant._M_iterator._M_sequence = __it._M_get_sequence();
278 _M_variant._M_iterator._M_seq_type = _GLIBCXX_TYPEID(_Sequence);
279
280 if (__it._M_singular())
281 _M_variant._M_iterator._M_state = __singular;
282 else
283 {
284 if (__it._M_is_before_begin())
285 _M_variant._M_iterator._M_state = __before_begin;
286 else if (__it._M_is_end())
287 _M_variant._M_iterator._M_state = __end;
288 else if (__it._M_is_begin())
289 _M_variant._M_iterator._M_state = __begin;
290 else
291 _M_variant._M_iterator._M_state = __middle;
292 }
293 }
294
295 template<typename _Iterator, typename _Sequence>
296 _Parameter(_Safe_local_iterator<_Iterator, _Sequence> const& __it,
297 const char* __name, _Is_iterator)
298 : _M_kind(__iterator), _M_variant()
299 {
300 _M_variant._M_iterator._M_name = __name;
301 _M_variant._M_iterator._M_address = std::__addressof(__it);
302 _M_variant._M_iterator._M_type = _GLIBCXX_TYPEID(_Iterator);
303 _M_variant._M_iterator._M_constness =
304 __it._S_constant() ? __const_iterator : __mutable_iterator;
305 _M_variant._M_iterator._M_sequence = __it._M_get_sequence();
306 _M_variant._M_iterator._M_seq_type = _GLIBCXX_TYPEID(_Sequence);
307
308 if (__it._M_singular())
309 _M_variant._M_iterator._M_state = __singular;
310 else
311 {
312 if (__it._M_is_end())
313 _M_variant._M_iterator._M_state = __end;
314 else if (__it._M_is_begin())
315 _M_variant._M_iterator._M_state = __begin;
316 else
317 _M_variant._M_iterator._M_state = __middle;
318 }
319 }
320
321 template<typename _Type>
322 _Parameter(const _Type* const& __it, const char* __name, _Is_iterator)
323 : _M_kind(__iterator), _M_variant()
324 {
325 _M_variant._M_iterator._M_name = __name;
326 _M_variant._M_iterator._M_address = std::__addressof(__it);
327 _M_variant._M_iterator._M_type = _GLIBCXX_TYPEID(__it);
328 _M_variant._M_iterator._M_constness = __const_iterator;
329 _M_variant._M_iterator._M_state = __it ? __unknown_state : __singular;
330 _M_variant._M_iterator._M_sequence = 0;
331 _M_variant._M_iterator._M_seq_type = 0;
332 }
333
334 template<typename _Type>
335 _Parameter(_Type* const& __it, const char* __name, _Is_iterator)
336 : _M_kind(__iterator), _M_variant()
337 {
338 _M_variant._M_iterator._M_name = __name;
339 _M_variant._M_iterator._M_address = std::__addressof(__it);
340 _M_variant._M_iterator._M_type = _GLIBCXX_TYPEID(__it);
341 _M_variant._M_iterator._M_constness = __mutable_iterator;
342 _M_variant._M_iterator._M_state = __it ? __unknown_state : __singular;
343 _M_variant._M_iterator._M_sequence = 0;
344 _M_variant._M_iterator._M_seq_type = 0;
345 }
346
347 template<typename _Iterator>
348 _Parameter(_Iterator const& __it, const char* __name, _Is_iterator)
349 : _M_kind(__iterator), _M_variant()
350 {
351 _M_variant._M_iterator._M_name = __name;
352 _M_variant._M_iterator._M_address = std::__addressof(__it);
353 _M_variant._M_iterator._M_type = _GLIBCXX_TYPEID(__it);
354 _M_variant._M_iterator._M_constness = __unknown_constness;
355 _M_variant._M_iterator._M_state =
356 __gnu_debug::__check_singular(__it) ? __singular : __unknown_state;
357 _M_variant._M_iterator._M_sequence = 0;
358 _M_variant._M_iterator._M_seq_type = 0;
359 }
360
361#if __cplusplus >= 201103L
362 // The following constructors are only defined in C++11 to take
363 // advantage of the constructor delegation feature.
364 template<typename _Iterator, typename _Container>
365 _Parameter(
366 __gnu_cxx::__normal_iterator<_Iterator, _Container> const& __it,
367 const char* __name, _Is_iterator)
368 : _Parameter(__it.base(), __name, _Is_iterator{})
369 { _M_variant._M_iterator._M_type = _GLIBCXX_TYPEID(__it); }
370
371 template<typename _Iterator>
372 _Parameter(std::reverse_iterator<_Iterator> const& __it,
373 const char* __name, _Is_iterator)
374 : _Parameter(__it.base(), __name, _Is_iterator{})
375 {
376 _M_variant._M_iterator._M_type = _GLIBCXX_TYPEID(__it);
377 _M_variant._M_iterator._M_state
378 = _S_reverse_state(_M_variant._M_iterator._M_state);
379 }
380
381 template<typename _Iterator, typename _Sequence, typename _Category>
382 _Parameter(std::reverse_iterator<_Safe_iterator<_Iterator, _Sequence,
383 _Category>> const& __it,
384 const char* __name, _Is_iterator)
385 : _Parameter(__it.base(), __name, _Is_iterator{})
386 {
387 _M_variant._M_iterator._M_type
388 = _GLIBCXX_TYPEID(std::reverse_iterator<_Iterator>);
389 _M_variant._M_iterator._M_state
390 = _S_reverse_state(_M_variant._M_iterator._M_state);
391 }
392
393 template<typename _Iterator>
394 _Parameter(std::move_iterator<_Iterator> const& __it,
395 const char* __name, _Is_iterator)
396 : _Parameter(__it.base(), __name, _Is_iterator{})
397 { _M_variant._M_iterator._M_type = _GLIBCXX_TYPEID(__it); }
398
399 template<typename _Iterator, typename _Sequence, typename _Category>
400 _Parameter(std::move_iterator<_Safe_iterator<_Iterator, _Sequence,
401 _Category>> const& __it,
402 const char* __name, _Is_iterator)
403 : _Parameter(__it.base(), __name, _Is_iterator{})
404 {
405 _M_variant._M_iterator._M_type
406 = _GLIBCXX_TYPEID(std::move_iterator<_Iterator>);
407 }
408
409 private:
410 _Iterator_state
411 _S_reverse_state(_Iterator_state __state)
412 {
413 switch (__state)
414 {
415 case __begin:
416 return __rend;
417 case __middle:
418 return __rmiddle;
419 case __end:
420 return __rbegin;
421 default:
422 return __state;
423 }
424 }
425
426 public:
427#endif
428
429 template<typename _Sequence>
430 _Parameter(const _Safe_sequence<_Sequence>& __seq,
431 const char* __name, _Is_sequence)
432 : _M_kind(__sequence), _M_variant()
433 {
434 _M_variant._M_sequence._M_name = __name;
435 _M_variant._M_sequence._M_address =
436 static_cast<const _Sequence*>(std::__addressof(__seq));
437 _M_variant._M_sequence._M_type = _GLIBCXX_TYPEID(_Sequence);
438 }
439
440 template<typename _Sequence>
441 _Parameter(const _Sequence& __seq, const char* __name, _Is_sequence)
442 : _M_kind(__sequence), _M_variant()
443 {
444 _M_variant._M_sequence._M_name = __name;
445 _M_variant._M_sequence._M_address = std::__addressof(__seq);
446 _M_variant._M_sequence._M_type = _GLIBCXX_TYPEID(_Sequence);
447 }
448
449 template<typename _Iterator>
450 _Parameter(const _Iterator& __it, const char* __name,
451 _Is_iterator_value_type)
452 : _M_kind(__iterator_value_type), _M_variant()
453 {
454 _M_variant._M_iterator_value_type._M_name = __name;
455 _M_variant._M_iterator_value_type._M_type =
456 _GLIBCXX_TYPEID(typename std::iterator_traits<_Iterator>::value_type);
457 }
458
459 template<typename _Type>
460 _Parameter(const _Type& __inst, const char* __name, _Is_instance)
461 : _M_kind(__instance), _M_variant()
462 {
463 _M_variant._M_instance._M_name = __name;
464 _M_variant._M_instance._M_address = &__inst;
465 _M_variant._M_instance._M_type = _GLIBCXX_TYPEID(_Type);
466 }
467
468#if !_GLIBCXX_INLINE_VERSION
469 void
470 _M_print_field(const _Error_formatter* __formatter,
471 const char* __name) const _GLIBCXX_DEPRECATED;
472
473 void
474 _M_print_description(const _Error_formatter* __formatter)
475 const _GLIBCXX_DEPRECATED;
476#endif
477 };
478
479 template<typename _Iterator>
480 _Error_formatter&
481 _M_iterator(const _Iterator& __it, const char* __name = 0)
482 {
483 if (_M_num_parameters < std::size_t(__max_parameters))
484 _M_parameters[_M_num_parameters++] = _Parameter(__it, __name,
485 _Is_iterator());
486 return *this;
487 }
488
489 template<typename _Iterator>
490 _Error_formatter&
491 _M_iterator_value_type(const _Iterator& __it,
492 const char* __name = 0)
493 {
494 if (_M_num_parameters < __max_parameters)
495 _M_parameters[_M_num_parameters++] =
496 _Parameter(__it, __name, _Is_iterator_value_type());
497 return *this;
498 }
499
500 _Error_formatter&
501 _M_integer(long __value, const char* __name = 0)
502 {
503 if (_M_num_parameters < __max_parameters)
504 _M_parameters[_M_num_parameters++] = _Parameter(__value, __name);
505 return *this;
506 }
507
508 _Error_formatter&
509 _M_string(const char* __value, const char* __name = 0)
510 {
511 if (_M_num_parameters < __max_parameters)
512 _M_parameters[_M_num_parameters++] = _Parameter(__value, __name);
513 return *this;
514 }
515
516 template<typename _Sequence>
517 _Error_formatter&
518 _M_sequence(const _Sequence& __seq, const char* __name = 0)
519 {
520 if (_M_num_parameters < __max_parameters)
521 _M_parameters[_M_num_parameters++] = _Parameter(__seq, __name,
522 _Is_sequence());
523 return *this;
524 }
525
526 template<typename _Type>
527 _Error_formatter&
528 _M_instance(const _Type& __inst, const char* __name = 0)
529 {
530 if (_M_num_parameters < __max_parameters)
531 _M_parameters[_M_num_parameters++] = _Parameter(__inst, __name,
532 _Is_instance());
533 return *this;
534 }
535
536 _Error_formatter&
537 _M_message(const char* __text)
538 { _M_text = __text; return *this; }
539
540 // Kept const qualifier for backward compatibility, to keep the same
541 // exported symbol.
542 _Error_formatter&
543 _M_message(_Debug_msg_id __id) const throw ();
544
545 _GLIBCXX_NORETURN void
546 _M_error() const;
547
548#if !_GLIBCXX_INLINE_VERSION
549 template<typename _Tp>
550 void
551 _M_format_word(char*, int, const char*, _Tp)
552 const throw () _GLIBCXX_DEPRECATED;
553
554 void
555 _M_print_word(const char* __word) const _GLIBCXX_DEPRECATED;
556
557 void
558 _M_print_string(const char* __string) const _GLIBCXX_DEPRECATED;
559#endif
560
561 private:
562 _Error_formatter(const char* __file, unsigned int __line,
563 const char* __function)
564 : _M_file(__file), _M_line(__line), _M_num_parameters(0), _M_text(0)
565 , _M_function(__function)
566 { }
567
568#if !_GLIBCXX_INLINE_VERSION
569 void
570 _M_get_max_length() const throw () _GLIBCXX_DEPRECATED;
571#endif
572
573 enum { __max_parameters = 9 };
574
575 const char* _M_file;
576 unsigned int _M_line;
577 _Parameter _M_parameters[__max_parameters];
578 unsigned int _M_num_parameters;
579 const char* _M_text;
580 const char* _M_function;
581
582 public:
583 static _Error_formatter&
584 _S_at(const char* __file, unsigned int __line, const char* __function)
585 {
586 static _Error_formatter __formatter(__file, __line, __function);
587 return __formatter;
588 }
589 };
590} // namespace __gnu_debug
591
592#undef _GLIBCXX_TYPEID
593
594#endif
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