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1 | // Debug-mode error formatting implementation -*- C++ -*- |
2 | ||
3 | // Copyright (C) 2003 | |
4 | // Free Software Foundation, Inc. | |
5 | // | |
6 | // This file is part of the GNU ISO C++ Library. This library is free | |
7 | // software; you can redistribute it and/or modify it under the | |
8 | // terms of the GNU General Public License as published by the | |
9 | // Free Software Foundation; either version 2, or (at your option) | |
10 | // any later version. | |
11 | ||
12 | // This library is distributed in the hope that it will be useful, | |
13 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | // GNU General Public License for more details. | |
16 | ||
17 | // You should have received a copy of the GNU General Public License along | |
18 | // with this library; see the file COPYING. If not, write to the Free | |
19 | // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, | |
20 | // USA. | |
21 | ||
22 | // As a special exception, you may use this file as part of a free software | |
23 | // library without restriction. Specifically, if other files instantiate | |
24 | // templates or use macros or inline functions from this file, or you compile | |
25 | // this file and link it with other files to produce an executable, this | |
26 | // file does not by itself cause the resulting executable to be covered by | |
27 | // the GNU General Public License. This exception does not however | |
28 | // invalidate any other reasons why the executable file might be covered by | |
29 | // the GNU General Public License. | |
30 | ||
31 | #ifndef _GLIBCXX_DEBUG_FORMATTER_H | |
32 | #define _GLIBCXX_DEBUG_FORMATTER_H 1 | |
33 | ||
34 | #include <typeinfo> | |
35 | #include <debug/debug.h> | |
36 | ||
37 | namespace __gnu_debug | |
38 | { | |
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39 | using namespace std; |
40 | ||
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41 | /** Determine if the two types are the same. */ |
42 | template<typename _Type1, typename _Type2> | |
43 | struct __is_same | |
44 | { | |
45 | static const bool value = false; | |
46 | }; | |
47 | ||
48 | template<typename _Type> | |
49 | struct __is_same<_Type, _Type> | |
50 | { | |
51 | static const bool value = true; | |
52 | }; | |
53 | ||
54 | template<bool> struct __truth { }; | |
55 | ||
56 | class _Safe_sequence_base; | |
57 | ||
58 | template<typename _Iterator, typename _Sequence> | |
59 | class _Safe_iterator; | |
60 | ||
61 | template<typename _Sequence> | |
62 | class _Safe_sequence; | |
63 | ||
64 | enum _Debug_msg_id | |
65 | { | |
66 | // General checks | |
67 | __msg_valid_range, | |
68 | __msg_insert_singular, | |
69 | __msg_insert_different, | |
70 | __msg_erase_bad, | |
71 | __msg_erase_different, | |
72 | __msg_subscript_oob, | |
73 | __msg_empty, | |
74 | __msg_unpartitioned, | |
75 | __msg_unpartitioned_pred, | |
76 | __msg_unsorted, | |
77 | __msg_unsorted_pred, | |
78 | __msg_not_heap, | |
79 | __msg_not_heap_pred, | |
80 | // std::bitset checks | |
81 | __msg_bad_bitset_write, | |
82 | __msg_bad_bitset_read, | |
83 | __msg_bad_bitset_flip, | |
84 | // std::list checks | |
85 | __msg_self_splice, | |
86 | __msg_splice_alloc, | |
87 | __msg_splice_bad, | |
88 | __msg_splice_other, | |
89 | __msg_splice_overlap, | |
90 | // iterator checks | |
91 | __msg_init_singular, | |
92 | __msg_init_copy_singular, | |
93 | __msg_init_const_singular, | |
94 | __msg_copy_singular, | |
95 | __msg_bad_deref, | |
96 | __msg_bad_inc, | |
97 | __msg_bad_dec, | |
98 | __msg_iter_subscript_oob, | |
99 | __msg_advance_oob, | |
100 | __msg_retreat_oob, | |
101 | __msg_iter_compare_bad, | |
102 | __msg_compare_different, | |
103 | __msg_iter_order_bad, | |
104 | __msg_order_different, | |
105 | __msg_distance_bad, | |
106 | __msg_distance_different, | |
107 | // istream_iterator | |
108 | __msg_deref_istream, | |
109 | __msg_inc_istream, | |
110 | // ostream_iterator | |
111 | __msg_output_ostream, | |
112 | // istreambuf_iterator | |
113 | __msg_deref_istreambuf, | |
114 | __msg_inc_istreambuf | |
115 | }; | |
116 | ||
117 | class _Error_formatter | |
118 | { | |
119 | /// Whether an iterator is constant, mutable, or unknown | |
120 | enum _Constness | |
121 | { | |
122 | __unknown_constness, | |
123 | __const_iterator, | |
124 | __mutable_iterator, | |
125 | __last_constness | |
126 | }; | |
127 | ||
128 | // The state of the iterator (fine-grained), if we know it. | |
129 | enum _Iterator_state | |
130 | { | |
131 | __unknown_state, | |
132 | __singular, // singular, may still be attached to a sequence | |
133 | __begin, // dereferenceable, and at the beginning | |
134 | __middle, // dereferenceable, not at the beginning | |
135 | __end, // past-the-end, may be at beginning if sequence empty | |
136 | __last_state | |
137 | }; | |
138 | ||
139 | // Tags denoting the type of parameter for construction | |
140 | struct _Is_iterator { }; | |
141 | struct _Is_sequence { }; | |
142 | ||
143 | // A parameter that may be referenced by an error message | |
144 | struct _Parameter | |
145 | { | |
146 | enum | |
147 | { | |
148 | __unused_param, | |
149 | __iterator, | |
150 | __sequence, | |
151 | __integer, | |
152 | __string | |
153 | } _M_kind; | |
154 | ||
155 | union | |
156 | { | |
157 | // When _M_kind == __iterator | |
158 | struct | |
159 | { | |
160 | const char* _M_name; | |
161 | const void* _M_address; | |
162 | const type_info* _M_type; | |
163 | _Constness _M_constness; | |
164 | _Iterator_state _M_state; | |
165 | const void* _M_sequence; | |
166 | const type_info* _M_seq_type; | |
167 | } _M_iterator; | |
168 | ||
169 | // When _M_kind == __sequence | |
170 | struct | |
171 | { | |
172 | const char* _M_name; | |
173 | const void* _M_address; | |
174 | const type_info* _M_type; | |
175 | } _M_sequence; | |
176 | ||
177 | // When _M_kind == __integer | |
178 | struct | |
179 | { | |
180 | const char* _M_name; | |
181 | long _M_value; | |
182 | } _M_integer; | |
183 | ||
184 | // When _M_kind == __string | |
185 | struct | |
186 | { | |
187 | const char* _M_name; | |
188 | const char* _M_value; | |
189 | } _M_string; | |
190 | } _M_variant; | |
191 | ||
192 | _Parameter() : _M_kind(__unused_param) { } | |
193 | ||
4be58168 | 194 | _Parameter(long __value, const char* __name) : _M_kind(__integer) |
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195 | { |
196 | _M_variant._M_integer._M_name = __name; | |
197 | _M_variant._M_integer._M_value = __value; | |
198 | } | |
199 | ||
4be58168 | 200 | _Parameter(const char* __value, const char* __name) : _M_kind(__string) |
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201 | { |
202 | _M_variant._M_string._M_name = __name; | |
203 | _M_variant._M_string._M_value = __value; | |
204 | } | |
205 | ||
206 | template<typename _Iterator, typename _Sequence> | |
207 | _Parameter(const _Safe_iterator<_Iterator, _Sequence>& __it, | |
208 | const char* __name, _Is_iterator) | |
209 | : _M_kind(__iterator) | |
210 | { | |
211 | _M_variant._M_iterator._M_name = __name; | |
212 | _M_variant._M_iterator._M_address = &__it; | |
213 | _M_variant._M_iterator._M_type = &typeid(__it); | |
214 | _M_variant._M_iterator._M_constness = | |
215 | __is_same<_Safe_iterator<_Iterator, _Sequence>, | |
216 | typename _Sequence::iterator>:: | |
217 | value? __mutable_iterator : __const_iterator; | |
218 | _M_variant._M_iterator._M_sequence = __it._M_get_sequence(); | |
219 | _M_variant._M_iterator._M_seq_type = &typeid(_Sequence); | |
220 | ||
221 | if (__it._M_singular()) | |
222 | _M_variant._M_iterator._M_state = __singular; | |
223 | else | |
224 | { | |
225 | bool __is_begin = __it._M_is_begin(); | |
226 | bool __is_end = __it._M_is_end(); | |
227 | if (__is_end) | |
228 | _M_variant._M_iterator._M_state = __end; | |
229 | else if (__is_begin) | |
230 | _M_variant._M_iterator._M_state = __begin; | |
231 | else | |
232 | _M_variant._M_iterator._M_state = __middle; | |
233 | } | |
234 | } | |
235 | ||
236 | template<typename _Type> | |
237 | _Parameter(const _Type*& __it, const char* __name, _Is_iterator) | |
238 | : _M_kind(__iterator) | |
239 | { | |
240 | _M_variant._M_iterator._M_name = __name; | |
241 | _M_variant._M_iterator._M_address = &__it; | |
242 | _M_variant._M_iterator._M_type = &typeid(__it); | |
243 | _M_variant._M_iterator._M_constness = __mutable_iterator; | |
244 | _M_variant._M_iterator._M_state = __it? __unknown_state : __singular; | |
245 | _M_variant._M_iterator._M_sequence = 0; | |
246 | _M_variant._M_iterator._M_seq_type = 0; | |
247 | } | |
248 | ||
249 | template<typename _Type> | |
250 | _Parameter(_Type*& __it, const char* __name, _Is_iterator) | |
251 | : _M_kind(__iterator) | |
252 | { | |
253 | _M_variant._M_iterator._M_name = __name; | |
254 | _M_variant._M_iterator._M_address = &__it; | |
255 | _M_variant._M_iterator._M_type = &typeid(__it); | |
256 | _M_variant._M_iterator._M_constness = __const_iterator; | |
257 | _M_variant._M_iterator._M_state = __it? __unknown_state : __singular; | |
258 | _M_variant._M_iterator._M_sequence = 0; | |
259 | _M_variant._M_iterator._M_seq_type = 0; | |
260 | } | |
261 | ||
262 | template<typename _Iterator> | |
263 | _Parameter(const _Iterator& __it, const char* __name, _Is_iterator) | |
264 | : _M_kind(__iterator) | |
265 | { | |
266 | _M_variant._M_iterator._M_name = __name; | |
267 | _M_variant._M_iterator._M_address = &__it; | |
268 | _M_variant._M_iterator._M_type = &typeid(__it); | |
269 | _M_variant._M_iterator._M_constness = __unknown_constness; | |
270 | _M_variant._M_iterator._M_state = | |
271 | __gnu_debug::__check_singular(__it)? __singular : __unknown_state; | |
272 | _M_variant._M_iterator._M_sequence = 0; | |
273 | _M_variant._M_iterator._M_seq_type = 0; | |
274 | } | |
275 | ||
276 | template<typename _Sequence> | |
4be58168 | 277 | _Parameter(const _Safe_sequence<_Sequence>& __seq, |
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278 | const char* __name, _Is_sequence) |
279 | : _M_kind(__sequence) | |
280 | { | |
281 | _M_variant._M_sequence._M_name = __name; | |
282 | _M_variant._M_sequence._M_address = | |
283 | static_cast<const _Sequence*>(&__seq); | |
284 | _M_variant._M_sequence._M_type = &typeid(_Sequence); | |
285 | } | |
286 | ||
287 | template<typename _Sequence> | |
288 | _Parameter(const _Sequence& __seq, const char* __name, _Is_sequence) | |
289 | : _M_kind(__sequence) | |
290 | { | |
291 | _M_variant._M_sequence._M_name = __name; | |
292 | _M_variant._M_sequence._M_address = &__seq; | |
293 | _M_variant._M_sequence._M_type = &typeid(_Sequence); | |
294 | } | |
295 | ||
296 | void | |
297 | _M_print_field(const _Error_formatter* __formatter, | |
298 | const char* __name) const; | |
299 | ||
300 | void | |
301 | _M_print_description(const _Error_formatter* __formatter) const; | |
302 | }; | |
303 | ||
304 | friend struct _Parameter; | |
305 | ||
306 | public: | |
307 | template<typename _Iterator> | |
308 | const _Error_formatter& | |
309 | _M_iterator(const _Iterator& __it, const char* __name = 0) const | |
310 | { | |
311 | if (_M_num_parameters < __max_parameters) | |
312 | _M_parameters[_M_num_parameters++] = _Parameter(__it, __name, | |
313 | _Is_iterator()); | |
314 | return *this; | |
315 | } | |
316 | ||
317 | const _Error_formatter& | |
318 | _M_integer(long __value, const char* __name = 0) const | |
319 | { | |
320 | if (_M_num_parameters < __max_parameters) | |
321 | _M_parameters[_M_num_parameters++] = _Parameter(__value, __name); | |
322 | return *this; | |
323 | } | |
324 | ||
325 | const _Error_formatter& | |
326 | _M_string(const char* __value, const char* __name = 0) const | |
327 | { | |
328 | if (_M_num_parameters < __max_parameters) | |
329 | _M_parameters[_M_num_parameters++] = _Parameter(__value, __name); | |
330 | return *this; | |
331 | } | |
332 | ||
333 | template<typename _Sequence> | |
334 | const _Error_formatter& | |
335 | _M_sequence(const _Sequence& __seq, const char* __name = 0) const | |
336 | { | |
337 | if (_M_num_parameters < __max_parameters) | |
338 | _M_parameters[_M_num_parameters++] = _Parameter(__seq, __name, | |
339 | _Is_sequence()); | |
340 | return *this; | |
341 | } | |
342 | ||
343 | const _Error_formatter& | |
344 | _M_message(const char* __text) const | |
345 | { _M_text = __text; return *this; } | |
346 | ||
347 | const _Error_formatter& | |
348 | _M_message(_Debug_msg_id __id) const; | |
349 | ||
350 | void | |
351 | _M_error() const; | |
352 | ||
353 | private: | |
354 | _Error_formatter(const char* __file, size_t __line) | |
355 | : _M_file(__file), _M_line(__line), _M_num_parameters(0), _M_text(0), | |
356 | _M_max_length(78), _M_column(1), _M_first_line(true), _M_wordwrap(false) | |
357 | { } | |
358 | ||
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359 | template<typename _T> |
360 | void | |
361 | _M_format_word(char*, int, const char*, _T) const; | |
362 | ||
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363 | void |
364 | _M_print_word(const char* __word) const; | |
365 | ||
366 | void | |
367 | _M_print_string(const char* __string) const; | |
368 | ||
369 | enum { __max_parameters = 9 }; | |
370 | ||
371 | const char* _M_file; | |
372 | size_t _M_line; | |
373 | mutable _Parameter _M_parameters[__max_parameters]; | |
374 | mutable size_t _M_num_parameters; | |
375 | mutable const char* _M_text; | |
376 | mutable size_t _M_max_length; | |
377 | enum { _M_indent = 4 } ; | |
378 | mutable size_t _M_column; | |
379 | mutable bool _M_first_line; | |
380 | mutable bool _M_wordwrap; | |
381 | ||
382 | public: | |
383 | static _Error_formatter | |
384 | _M_at(const char* __file, size_t __line) | |
385 | { return _Error_formatter(__file, __line); } | |
386 | }; | |
387 | } // namespace __gnu_debug | |
388 | ||
389 | #endif |