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c87b25e6 | 1 | /* Map (unsigned int) keys to (source file, line, column) triples. |
a5544970 | 2 | Copyright (C) 2001-2019 Free Software Foundation, Inc. |
d82fc108 NB |
3 | |
4 | This program is free software; you can redistribute it and/or modify it | |
5 | under the terms of the GNU General Public License as published by the | |
748086b7 | 6 | Free Software Foundation; either version 3, or (at your option) any |
d82fc108 NB |
7 | later version. |
8 | ||
9 | This program is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | GNU General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU General Public License | |
748086b7 JJ |
15 | along with this program; see the file COPYING3. If not see |
16 | <http://www.gnu.org/licenses/>. | |
d82fc108 NB |
17 | |
18 | In other words, you are welcome to use, share and improve this program. | |
19 | You are forbidden to forbid anyone else to use, share and improve | |
20 | what you give them. Help stamp out software-hoarding! */ | |
21 | ||
22 | #include "config.h" | |
23 | #include "system.h" | |
24 | #include "line-map.h" | |
46427374 TT |
25 | #include "cpplib.h" |
26 | #include "internal.h" | |
5368224f | 27 | #include "hashtab.h" |
d82fc108 | 28 | |
99b1c316 MS |
29 | static void trace_include (const line_maps *, const line_map_ordinary *); |
30 | static const line_map_ordinary * linemap_ordinary_map_lookup (line_maps *, | |
620e594b | 31 | location_t); |
99b1c316 | 32 | static const line_map_macro* linemap_macro_map_lookup (line_maps *, |
620e594b DM |
33 | location_t); |
34 | static location_t linemap_macro_map_loc_to_def_point | |
35 | (const line_map_macro *, location_t); | |
36 | static location_t linemap_macro_map_loc_to_exp_point | |
37 | (const line_map_macro *, location_t); | |
38 | static location_t linemap_macro_loc_to_spelling_point | |
99b1c316 | 39 | (line_maps *, location_t, const line_map_ordinary **); |
620e594b DM |
40 | static location_t linemap_macro_loc_to_def_point (line_maps *, |
41 | location_t, | |
42 | const line_map_ordinary **); | |
43 | static location_t linemap_macro_loc_to_exp_point (line_maps *, | |
44 | location_t, | |
45 | const line_map_ordinary **); | |
5993019d | 46 | |
64a1a422 TT |
47 | /* Counters defined in macro.c. */ |
48 | extern unsigned num_expanded_macros_counter; | |
49 | extern unsigned num_macro_tokens_counter; | |
50 | ||
2be1b796 DM |
51 | /* Destructor for class line_maps. |
52 | Ensure non-GC-managed memory is released. */ | |
53 | ||
54 | line_maps::~line_maps () | |
55 | { | |
c3684b7b MS |
56 | if (location_adhoc_data_map.htab) |
57 | htab_delete (location_adhoc_data_map.htab); | |
2be1b796 DM |
58 | } |
59 | ||
5368224f DC |
60 | /* Hash function for location_adhoc_data hashtable. */ |
61 | ||
62 | static hashval_t | |
63 | location_adhoc_data_hash (const void *l) | |
64 | { | |
65 | const struct location_adhoc_data *lb = | |
66 | (const struct location_adhoc_data *) l; | |
ebedc9a3 DM |
67 | return ((hashval_t) lb->locus |
68 | + (hashval_t) lb->src_range.m_start | |
69 | + (hashval_t) lb->src_range.m_finish | |
70 | + (size_t) lb->data); | |
5368224f DC |
71 | } |
72 | ||
73 | /* Compare function for location_adhoc_data hashtable. */ | |
74 | ||
75 | static int | |
76 | location_adhoc_data_eq (const void *l1, const void *l2) | |
77 | { | |
78 | const struct location_adhoc_data *lb1 = | |
79 | (const struct location_adhoc_data *) l1; | |
80 | const struct location_adhoc_data *lb2 = | |
81 | (const struct location_adhoc_data *) l2; | |
ebedc9a3 DM |
82 | return (lb1->locus == lb2->locus |
83 | && lb1->src_range.m_start == lb2->src_range.m_start | |
84 | && lb1->src_range.m_finish == lb2->src_range.m_finish | |
85 | && lb1->data == lb2->data); | |
5368224f DC |
86 | } |
87 | ||
88 | /* Update the hashtable when location_adhoc_data is reallocated. */ | |
89 | ||
90 | static int | |
91 | location_adhoc_data_update (void **slot, void *data) | |
92 | { | |
6d522731 JJ |
93 | *((char **) slot) |
94 | = (char *) ((uintptr_t) *((char **) slot) + *((ptrdiff_t *) data)); | |
5368224f DC |
95 | return 1; |
96 | } | |
97 | ||
52187008 DC |
98 | /* Rebuild the hash table from the location adhoc data. */ |
99 | ||
100 | void | |
99b1c316 | 101 | rebuild_location_adhoc_htab (line_maps *set) |
52187008 DC |
102 | { |
103 | unsigned i; | |
104 | set->location_adhoc_data_map.htab = | |
105 | htab_create (100, location_adhoc_data_hash, location_adhoc_data_eq, NULL); | |
106 | for (i = 0; i < set->location_adhoc_data_map.curr_loc; i++) | |
107 | htab_find_slot (set->location_adhoc_data_map.htab, | |
108 | set->location_adhoc_data_map.data + i, INSERT); | |
109 | } | |
110 | ||
ebedc9a3 DM |
111 | /* Helper function for get_combined_adhoc_loc. |
112 | Can the given LOCUS + SRC_RANGE and DATA pointer be stored compactly | |
620e594b | 113 | within a location_t, without needing to use an ad-hoc location. */ |
ebedc9a3 DM |
114 | |
115 | static bool | |
99b1c316 | 116 | can_be_stored_compactly_p (line_maps *set, |
620e594b | 117 | location_t locus, |
ebedc9a3 DM |
118 | source_range src_range, |
119 | void *data) | |
120 | { | |
121 | /* If there's an ad-hoc pointer, we can't store it directly in the | |
620e594b | 122 | location_t, we need the lookaside. */ |
ebedc9a3 DM |
123 | if (data) |
124 | return false; | |
125 | ||
126 | /* We only store ranges that begin at the locus and that are sufficiently | |
127 | "sane". */ | |
128 | if (src_range.m_start != locus) | |
129 | return false; | |
130 | ||
131 | if (src_range.m_finish < src_range.m_start) | |
132 | return false; | |
133 | ||
134 | if (src_range.m_start < RESERVED_LOCATION_COUNT) | |
135 | return false; | |
136 | ||
c7df95d8 | 137 | if (locus >= LINE_MAP_MAX_LOCATION_WITH_PACKED_RANGES) |
ebedc9a3 DM |
138 | return false; |
139 | ||
140 | /* All 3 locations must be within ordinary maps, typically, the same | |
141 | ordinary map. */ | |
620e594b | 142 | location_t lowest_macro_loc = LINEMAPS_MACRO_LOWEST_LOCATION (set); |
ebedc9a3 DM |
143 | if (locus >= lowest_macro_loc) |
144 | return false; | |
145 | if (src_range.m_start >= lowest_macro_loc) | |
146 | return false; | |
147 | if (src_range.m_finish >= lowest_macro_loc) | |
148 | return false; | |
149 | ||
150 | /* Passed all tests. */ | |
151 | return true; | |
152 | } | |
153 | ||
5368224f DC |
154 | /* Combine LOCUS and DATA to a combined adhoc loc. */ |
155 | ||
620e594b | 156 | location_t |
99b1c316 | 157 | get_combined_adhoc_loc (line_maps *set, |
620e594b | 158 | location_t locus, |
ebedc9a3 DM |
159 | source_range src_range, |
160 | void *data) | |
5368224f DC |
161 | { |
162 | struct location_adhoc_data lb; | |
163 | struct location_adhoc_data **slot; | |
164 | ||
5368224f | 165 | if (IS_ADHOC_LOC (locus)) |
e6fc8353 | 166 | locus = get_location_from_adhoc_loc (set, locus); |
5368224f DC |
167 | if (locus == 0 && data == NULL) |
168 | return 0; | |
ebedc9a3 DM |
169 | |
170 | /* Any ordinary locations ought to be "pure" at this point: no | |
171 | compressed ranges. */ | |
172 | linemap_assert (locus < RESERVED_LOCATION_COUNT | |
c7df95d8 | 173 | || locus >= LINE_MAP_MAX_LOCATION_WITH_PACKED_RANGES |
ebedc9a3 DM |
174 | || locus >= LINEMAPS_MACRO_LOWEST_LOCATION (set) |
175 | || pure_location_p (set, locus)); | |
176 | ||
177 | /* Consider short-range optimization. */ | |
178 | if (can_be_stored_compactly_p (set, locus, src_range, data)) | |
179 | { | |
180 | /* The low bits ought to be clear. */ | |
181 | linemap_assert (pure_location_p (set, locus)); | |
182 | const line_map *map = linemap_lookup (set, locus); | |
183 | const line_map_ordinary *ordmap = linemap_check_ordinary (map); | |
184 | unsigned int int_diff = src_range.m_finish - src_range.m_start; | |
185 | unsigned int col_diff = (int_diff >> ordmap->m_range_bits); | |
186 | if (col_diff < (1U << ordmap->m_range_bits)) | |
187 | { | |
620e594b | 188 | location_t packed = locus | col_diff; |
ebedc9a3 DM |
189 | set->num_optimized_ranges++; |
190 | return packed; | |
191 | } | |
192 | } | |
193 | ||
329590d7 | 194 | /* We can also compactly store locations |
ebedc9a3 | 195 | when locus == start == finish (and data is NULL). */ |
329590d7 | 196 | if (locus == src_range.m_start |
ebedc9a3 DM |
197 | && locus == src_range.m_finish |
198 | && !data) | |
199 | return locus; | |
200 | ||
201 | if (!data) | |
202 | set->num_unoptimized_ranges++; | |
203 | ||
5368224f | 204 | lb.locus = locus; |
ebedc9a3 | 205 | lb.src_range = src_range; |
5368224f DC |
206 | lb.data = data; |
207 | slot = (struct location_adhoc_data **) | |
208 | htab_find_slot (set->location_adhoc_data_map.htab, &lb, INSERT); | |
209 | if (*slot == NULL) | |
210 | { | |
211 | if (set->location_adhoc_data_map.curr_loc >= | |
212 | set->location_adhoc_data_map.allocated) | |
213 | { | |
214 | char *orig_data = (char *) set->location_adhoc_data_map.data; | |
6d522731 | 215 | ptrdiff_t offset; |
8ac16127 MG |
216 | /* Cast away extern "C" from the type of xrealloc. */ |
217 | line_map_realloc reallocator = (set->reallocator | |
218 | ? set->reallocator | |
219 | : (line_map_realloc) xrealloc); | |
52187008 DC |
220 | |
221 | if (set->location_adhoc_data_map.allocated == 0) | |
222 | set->location_adhoc_data_map.allocated = 128; | |
223 | else | |
224 | set->location_adhoc_data_map.allocated *= 2; | |
225 | set->location_adhoc_data_map.data = (struct location_adhoc_data *) | |
226 | reallocator (set->location_adhoc_data_map.data, | |
227 | set->location_adhoc_data_map.allocated | |
228 | * sizeof (struct location_adhoc_data)); | |
5368224f | 229 | offset = (char *) (set->location_adhoc_data_map.data) - orig_data; |
52187008 DC |
230 | if (set->location_adhoc_data_map.allocated > 128) |
231 | htab_traverse (set->location_adhoc_data_map.htab, | |
232 | location_adhoc_data_update, &offset); | |
5368224f DC |
233 | } |
234 | *slot = set->location_adhoc_data_map.data | |
235 | + set->location_adhoc_data_map.curr_loc; | |
acf601ae JJ |
236 | set->location_adhoc_data_map.data[set->location_adhoc_data_map.curr_loc++] |
237 | = lb; | |
5368224f DC |
238 | } |
239 | return ((*slot) - set->location_adhoc_data_map.data) | 0x80000000; | |
240 | } | |
241 | ||
242 | /* Return the data for the adhoc loc. */ | |
243 | ||
244 | void * | |
99b1c316 | 245 | get_data_from_adhoc_loc (const class line_maps *set, location_t loc) |
5368224f DC |
246 | { |
247 | linemap_assert (IS_ADHOC_LOC (loc)); | |
620e594b | 248 | return set->location_adhoc_data_map.data[loc & MAX_LOCATION_T].data; |
5368224f DC |
249 | } |
250 | ||
251 | /* Return the location for the adhoc loc. */ | |
252 | ||
620e594b | 253 | location_t |
99b1c316 | 254 | get_location_from_adhoc_loc (const class line_maps *set, location_t loc) |
5368224f DC |
255 | { |
256 | linemap_assert (IS_ADHOC_LOC (loc)); | |
620e594b | 257 | return set->location_adhoc_data_map.data[loc & MAX_LOCATION_T].locus; |
5368224f DC |
258 | } |
259 | ||
ebedc9a3 DM |
260 | /* Return the source_range for adhoc location LOC. */ |
261 | ||
262 | static source_range | |
99b1c316 | 263 | get_range_from_adhoc_loc (const class line_maps *set, location_t loc) |
ebedc9a3 DM |
264 | { |
265 | linemap_assert (IS_ADHOC_LOC (loc)); | |
620e594b | 266 | return set->location_adhoc_data_map.data[loc & MAX_LOCATION_T].src_range; |
ebedc9a3 DM |
267 | } |
268 | ||
269 | /* Get the source_range of location LOC, either from the ad-hoc | |
270 | lookaside table, or embedded inside LOC itself. */ | |
271 | ||
272 | source_range | |
99b1c316 | 273 | get_range_from_loc (line_maps *set, |
620e594b | 274 | location_t loc) |
ebedc9a3 DM |
275 | { |
276 | if (IS_ADHOC_LOC (loc)) | |
277 | return get_range_from_adhoc_loc (set, loc); | |
278 | ||
279 | /* For ordinary maps, extract packed range. */ | |
280 | if (loc >= RESERVED_LOCATION_COUNT | |
281 | && loc < LINEMAPS_MACRO_LOWEST_LOCATION (set) | |
c7df95d8 | 282 | && loc <= LINE_MAP_MAX_LOCATION_WITH_PACKED_RANGES) |
ebedc9a3 DM |
283 | { |
284 | const line_map *map = linemap_lookup (set, loc); | |
285 | const line_map_ordinary *ordmap = linemap_check_ordinary (map); | |
286 | source_range result; | |
287 | int offset = loc & ((1 << ordmap->m_range_bits) - 1); | |
288 | result.m_start = loc - offset; | |
289 | result.m_finish = result.m_start + (offset << ordmap->m_range_bits); | |
290 | return result; | |
291 | } | |
292 | ||
293 | return source_range::from_location (loc); | |
294 | } | |
295 | ||
296 | /* Get whether location LOC is a "pure" location, or | |
297 | whether it is an ad-hoc location, or embeds range information. */ | |
298 | ||
299 | bool | |
620e594b | 300 | pure_location_p (line_maps *set, location_t loc) |
ebedc9a3 DM |
301 | { |
302 | if (IS_ADHOC_LOC (loc)) | |
303 | return false; | |
304 | ||
305 | const line_map *map = linemap_lookup (set, loc); | |
cf806c7d L |
306 | if (map == NULL) |
307 | return true; | |
ebedc9a3 DM |
308 | const line_map_ordinary *ordmap = linemap_check_ordinary (map); |
309 | ||
310 | if (loc & ((1U << ordmap->m_range_bits) - 1)) | |
311 | return false; | |
312 | ||
313 | return true; | |
314 | } | |
315 | ||
2aa51413 DM |
316 | /* Given location LOC within SET, strip away any packed range information |
317 | or ad-hoc information. */ | |
318 | ||
620e594b DM |
319 | location_t |
320 | get_pure_location (line_maps *set, location_t loc) | |
2aa51413 DM |
321 | { |
322 | if (IS_ADHOC_LOC (loc)) | |
e6fc8353 | 323 | loc = get_location_from_adhoc_loc (set, loc); |
2aa51413 DM |
324 | |
325 | if (loc >= LINEMAPS_MACRO_LOWEST_LOCATION (set)) | |
326 | return loc; | |
327 | ||
328 | if (loc < RESERVED_LOCATION_COUNT) | |
329 | return loc; | |
330 | ||
331 | const line_map *map = linemap_lookup (set, loc); | |
332 | const line_map_ordinary *ordmap = linemap_check_ordinary (map); | |
333 | ||
334 | return loc & ~((1 << ordmap->m_range_bits) - 1); | |
335 | } | |
336 | ||
d82fc108 NB |
337 | /* Initialize a line map set. */ |
338 | ||
339 | void | |
99b1c316 | 340 | linemap_init (line_maps *set, |
620e594b | 341 | location_t builtin_location) |
d82fc108 | 342 | { |
fe74f9b4 RB |
343 | #if __GNUC__ == 4 && __GNUC_MINOR__ == 2 && !defined (__clang__) |
344 | /* PR33916, needed to fix PR82939. */ | |
99b1c316 | 345 | memset (set, 0, sizeof (line_maps)); |
fe74f9b4 | 346 | #else |
b2ff7457 | 347 | new (set) line_maps(); |
fe74f9b4 | 348 | #endif |
e81c3c4d NS |
349 | /* Set default reallocator (used for initial alloc too). */ |
350 | set->reallocator = xrealloc; | |
96c169e1 JJ |
351 | set->highest_location = RESERVED_LOCATION_COUNT - 1; |
352 | set->highest_line = RESERVED_LOCATION_COUNT - 1; | |
52187008 DC |
353 | set->location_adhoc_data_map.htab = |
354 | htab_create (100, location_adhoc_data_hash, location_adhoc_data_eq, NULL); | |
c468587a | 355 | set->builtin_location = builtin_location; |
d82fc108 NB |
356 | } |
357 | ||
f10a9135 NS |
358 | /* Return the ordinary line map from whence MAP was included. Returns |
359 | NULL if MAP was not an include. */ | |
360 | ||
361 | const line_map_ordinary * | |
362 | linemap_included_from_linemap (line_maps *set, const line_map_ordinary *map) | |
363 | { | |
364 | return linemap_ordinary_map_lookup (set, linemap_included_from (map)); | |
365 | } | |
366 | ||
9ac97460 | 367 | /* Check for and warn about line_maps entered but not exited. */ |
12f9df4e PB |
368 | |
369 | void | |
99b1c316 | 370 | linemap_check_files_exited (line_maps *set) |
12f9df4e | 371 | { |
12f9df4e PB |
372 | /* Depending upon whether we are handling preprocessed input or |
373 | not, this can be a user error or an ICE. */ | |
f10a9135 | 374 | for (const line_map_ordinary *map = LINEMAPS_LAST_ORDINARY_MAP (set); |
46427374 | 375 | ! MAIN_FILE_P (map); |
f10a9135 | 376 | map = linemap_included_from_linemap (set, map)) |
12f9df4e | 377 | fprintf (stderr, "line-map.c: file \"%s\" entered but not left\n", |
46427374 | 378 | ORDINARY_MAP_FILE_NAME (map)); |
12f9df4e | 379 | } |
d82fc108 | 380 | |
46427374 TT |
381 | /* Create a new line map in the line map set SET, and return it. |
382 | REASON is the reason of creating the map. It determines the type | |
383 | of map created (ordinary or macro map). Note that ordinary maps and | |
384 | macro maps are allocated in different memory location. */ | |
385 | ||
386 | static struct line_map * | |
99b1c316 | 387 | new_linemap (line_maps *set, location_t start_location) |
d82fc108 | 388 | { |
e81c3c4d NS |
389 | bool macro_p = start_location >= LINE_MAP_MAX_LOCATION; |
390 | unsigned num_maps_allocated = LINEMAPS_ALLOCATED (set, macro_p); | |
391 | unsigned num_maps_used = LINEMAPS_USED (set, macro_p); | |
46427374 | 392 | |
e81c3c4d | 393 | if (num_maps_used == num_maps_allocated) |
fde84349 | 394 | { |
e81c3c4d NS |
395 | /* We need more space! */ |
396 | if (!num_maps_allocated) | |
397 | num_maps_allocated = 128; | |
398 | num_maps_allocated *= 2; | |
399 | ||
400 | size_t size_of_a_map; | |
401 | void *buffer; | |
402 | if (macro_p) | |
403 | { | |
404 | size_of_a_map = sizeof (line_map_macro); | |
405 | buffer = set->info_macro.maps; | |
406 | } | |
407 | else | |
408 | { | |
409 | size_of_a_map = sizeof (line_map_ordinary); | |
410 | buffer = set->info_ordinary.maps; | |
411 | } | |
0e50b624 | 412 | |
b9bd6f74 TT |
413 | /* We are going to execute some dance to try to reduce the |
414 | overhead of the memory allocator, in case we are using the | |
415 | ggc-page.c one. | |
416 | ||
417 | The actual size of memory we are going to get back from the | |
e81c3c4d NS |
418 | allocator may well be larger than what we ask for. Use this |
419 | hook to find what that size is. */ | |
420 | size_t alloc_size | |
421 | = set->round_alloc_size (num_maps_allocated * size_of_a_map); | |
b9bd6f74 TT |
422 | |
423 | /* Now alloc_size contains the exact memory size we would get if | |
424 | we have asked for the initial alloc_size amount of memory. | |
e81c3c4d NS |
425 | Let's get back to the number of map that amounts to. */ |
426 | unsigned num_maps = alloc_size / size_of_a_map; | |
427 | buffer = set->reallocator (buffer, num_maps * size_of_a_map); | |
428 | memset ((char *)buffer + num_maps_used * size_of_a_map, 0, | |
429 | (num_maps - num_maps_used) * size_of_a_map); | |
430 | if (macro_p) | |
431 | set->info_macro.maps = (line_map_macro *)buffer; | |
0e50b624 | 432 | else |
e81c3c4d NS |
433 | set->info_ordinary.maps = (line_map_ordinary *)buffer; |
434 | LINEMAPS_ALLOCATED (set, macro_p) = num_maps; | |
0e50b624 | 435 | } |
46427374 | 436 | |
e81c3c4d NS |
437 | line_map *result = (macro_p ? (line_map *)&set->info_macro.maps[num_maps_used] |
438 | : (line_map *)&set->info_ordinary.maps[num_maps_used]); | |
439 | LINEMAPS_USED (set, macro_p)++; | |
42a98b43 | 440 | |
e81c3c4d | 441 | result->start_location = start_location; |
46427374 | 442 | |
46427374 | 443 | return result; |
d82fc108 NB |
444 | } |
445 | ||
446 | /* Add a mapping of logical source line to physical source file and | |
9074464c GK |
447 | line number. |
448 | ||
449 | The text pointed to by TO_FILE must have a lifetime | |
450 | at least as long as the final call to lookup_line (). An empty | |
451 | TO_FILE means standard input. If reason is LC_LEAVE, and | |
452 | TO_FILE is NULL, then TO_FILE, TO_LINE and SYSP are given their | |
453 | natural values considering the file we are returning to. | |
d82fc108 NB |
454 | |
455 | FROM_LINE should be monotonic increasing across calls to this | |
9074464c GK |
456 | function. A call to this function can relocate the previous set of |
457 | maps, so any stored line_map pointers should not be used. */ | |
d82fc108 | 458 | |
47d89cf3 | 459 | const struct line_map * |
99b1c316 | 460 | linemap_add (line_maps *set, enum lc_reason reason, |
1bb64668 | 461 | unsigned int sysp, const char *to_file, linenum_type to_line) |
d82fc108 | 462 | { |
ebedc9a3 DM |
463 | /* Generate a start_location above the current highest_location. |
464 | If possible, make the low range bits be zero. */ | |
620e594b | 465 | location_t start_location; |
ebedc9a3 DM |
466 | if (set->highest_location < LINE_MAP_MAX_LOCATION_WITH_COLS) |
467 | { | |
468 | start_location = set->highest_location + (1 << set->default_range_bits); | |
469 | if (set->default_range_bits) | |
470 | start_location &= ~((1 << set->default_range_bits) - 1); | |
471 | linemap_assert (0 == (start_location | |
472 | & ((1 << set->default_range_bits) - 1))); | |
473 | } | |
474 | else | |
475 | start_location = set->highest_location + 1; | |
d82fc108 | 476 | |
42a98b43 NS |
477 | linemap_assert (!LINEMAPS_ORDINARY_USED (set) |
478 | || (start_location | |
479 | >= MAP_START_LOCATION (LINEMAPS_LAST_ORDINARY_MAP (set)))); | |
46427374 TT |
480 | |
481 | /* When we enter the file for the first time reason cannot be | |
482 | LC_RENAME. */ | |
483 | linemap_assert (!(set->depth == 0 && reason == LC_RENAME)); | |
d82fc108 | 484 | |
46427374 TT |
485 | /* If we are leaving the main file, return a NULL map. */ |
486 | if (reason == LC_LEAVE | |
487 | && MAIN_FILE_P (LINEMAPS_LAST_ORDINARY_MAP (set)) | |
488 | && to_file == NULL) | |
d82fc108 | 489 | { |
46427374 TT |
490 | set->depth--; |
491 | return NULL; | |
d82fc108 NB |
492 | } |
493 | ||
0e50b624 | 494 | linemap_assert (reason != LC_ENTER_MACRO); |
cf806c7d L |
495 | |
496 | if (start_location >= LINE_MAP_MAX_LOCATION) | |
497 | /* We ran out of line map space. */ | |
498 | start_location = 0; | |
499 | ||
42a98b43 NS |
500 | line_map_ordinary *map |
501 | = linemap_check_ordinary (new_linemap (set, start_location)); | |
502 | map->reason = reason; | |
d82fc108 | 503 | |
c7f9c0b9 | 504 | if (to_file && *to_file == '\0' && reason != LC_RENAME_VERBATIM) |
9074464c GK |
505 | to_file = "<stdin>"; |
506 | ||
c7f9c0b9 JM |
507 | if (reason == LC_RENAME_VERBATIM) |
508 | reason = LC_RENAME; | |
509 | ||
f10a9135 | 510 | const line_map_ordinary *from = NULL; |
892a371f | 511 | if (reason == LC_LEAVE) |
fde84349 | 512 | { |
46427374 TT |
513 | /* When we are just leaving an "included" file, and jump to the next |
514 | location inside the "includer" right after the #include | |
515 | "included", this variable points the map in use right before the | |
516 | #include "included", inside the same "includer" file. */ | |
47d89cf3 | 517 | |
3caf0ca1 BS |
518 | linemap_assert (!MAIN_FILE_P (map - 1)); |
519 | /* (MAP - 1) points to the map we are leaving. The | |
520 | map from which (MAP - 1) got included should be the map | |
521 | that comes right before MAP in the same file. */ | |
f10a9135 | 522 | from = linemap_included_from_linemap (set, map - 1); |
47d89cf3 NB |
523 | |
524 | /* A TO_FILE of NULL is special - we use the natural values. */ | |
3caf0ca1 | 525 | if (to_file == NULL) |
47d89cf3 | 526 | { |
46427374 | 527 | to_file = ORDINARY_MAP_FILE_NAME (from); |
12f9df4e | 528 | to_line = SOURCE_LINE (from, from[1].start_location); |
46427374 | 529 | sysp = ORDINARY_MAP_IN_SYSTEM_HEADER_P (from); |
fde84349 | 530 | } |
3caf0ca1 BS |
531 | else |
532 | linemap_assert (filename_cmp (ORDINARY_MAP_FILE_NAME (from), | |
533 | to_file) == 0); | |
fde84349 NB |
534 | } |
535 | ||
c819ed29 | 536 | map->sysp = sysp; |
c819ed29 DM |
537 | map->to_file = to_file; |
538 | map->to_line = to_line; | |
46427374 | 539 | LINEMAPS_ORDINARY_CACHE (set) = LINEMAPS_ORDINARY_USED (set) - 1; |
ebedc9a3 DM |
540 | map->m_column_and_range_bits = 0; |
541 | map->m_range_bits = 0; | |
12f9df4e | 542 | set->highest_location = start_location; |
500bee0a | 543 | set->highest_line = start_location; |
12f9df4e | 544 | set->max_column_hint = 0; |
47d89cf3 | 545 | |
ebedc9a3 DM |
546 | /* This assertion is placed after set->highest_location has |
547 | been updated, since the latter affects | |
548 | linemap_location_from_macro_expansion_p, which ultimately affects | |
549 | pure_location_p. */ | |
550 | linemap_assert (pure_location_p (set, start_location)); | |
551 | ||
fde84349 | 552 | if (reason == LC_ENTER) |
d8693c6f | 553 | { |
f10a9135 NS |
554 | if (set->depth == 0) |
555 | map->included_from = 0; | |
556 | else | |
557 | /* The location of the end of the just-closed map. */ | |
558 | map->included_from | |
559 | = (((map[0].start_location - 1 - map[-1].start_location) | |
560 | & ~((1 << map[-1].m_column_and_range_bits) - 1)) | |
561 | + map[-1].start_location); | |
d8693c6f | 562 | set->depth++; |
d8693c6f NB |
563 | if (set->trace_includes) |
564 | trace_include (set, map); | |
565 | } | |
d82fc108 | 566 | else if (reason == LC_RENAME) |
f10a9135 | 567 | map->included_from = linemap_included_from (&map[-1]); |
d82fc108 | 568 | else if (reason == LC_LEAVE) |
d8693c6f NB |
569 | { |
570 | set->depth--; | |
f10a9135 | 571 | map->included_from = linemap_included_from (from); |
d8693c6f | 572 | } |
5993019d | 573 | |
d82fc108 NB |
574 | return map; |
575 | } | |
576 | ||
7d9641cc | 577 | /* Returns TRUE if the line table set tracks token locations across |
46427374 TT |
578 | macro expansion, FALSE otherwise. */ |
579 | ||
580 | bool | |
99b1c316 | 581 | linemap_tracks_macro_expansion_locs_p (line_maps *set) |
46427374 TT |
582 | { |
583 | return LINEMAPS_MACRO_MAPS (set) != NULL; | |
584 | } | |
585 | ||
586 | /* Create a macro map. A macro map encodes source locations of tokens | |
587 | that are part of a macro replacement-list, at a macro expansion | |
588 | point. See the extensive comments of struct line_map and struct | |
589 | line_map_macro, in line-map.h. | |
590 | ||
591 | This map shall be created when the macro is expanded. The map | |
592 | encodes the source location of the expansion point of the macro as | |
593 | well as the "original" source location of each token that is part | |
594 | of the macro replacement-list. If a macro is defined but never | |
595 | expanded, it has no macro map. SET is the set of maps the macro | |
596 | map should be part of. MACRO_NODE is the macro which the new macro | |
597 | map should encode source locations for. EXPANSION is the location | |
598 | of the expansion point of MACRO. For function-like macros | |
599 | invocations, it's best to make it point to the closing parenthesis | |
600 | of the macro, rather than the the location of the first character | |
601 | of the macro. NUM_TOKENS is the number of tokens that are part of | |
602 | the replacement-list of MACRO. | |
603 | ||
604 | Note that when we run out of the integer space available for source | |
605 | locations, this function returns NULL. In that case, callers of | |
606 | this function cannot encode {line,column} pairs into locations of | |
607 | macro tokens anymore. */ | |
608 | ||
0e50b624 | 609 | const line_map_macro * |
99b1c316 | 610 | linemap_enter_macro (class line_maps *set, struct cpp_hashnode *macro_node, |
620e594b | 611 | location_t expansion, unsigned int num_tokens) |
46427374 | 612 | { |
620e594b | 613 | location_t start_location |
c1b48b29 | 614 | = LINEMAPS_MACRO_LOWEST_LOCATION (set) - num_tokens; |
46427374 | 615 | |
42a98b43 | 616 | if (start_location < LINE_MAP_MAX_LOCATION) |
46427374 TT |
617 | /* We ran out of macro map space. */ |
618 | return NULL; | |
619 | ||
c1b48b29 | 620 | line_map_macro *map = linemap_check_macro (new_linemap (set, start_location)); |
46427374 | 621 | |
c819ed29 DM |
622 | map->macro = macro_node; |
623 | map->n_tokens = num_tokens; | |
624 | map->macro_locations | |
620e594b | 625 | = (location_t*) set->reallocator (NULL, |
c1b48b29 | 626 | 2 * num_tokens |
620e594b | 627 | * sizeof (location_t)); |
c819ed29 | 628 | map->expansion = expansion; |
46427374 | 629 | memset (MACRO_MAP_LOCATIONS (map), 0, |
620e594b | 630 | 2 * num_tokens * sizeof (location_t)); |
46427374 TT |
631 | |
632 | LINEMAPS_MACRO_CACHE (set) = LINEMAPS_MACRO_USED (set) - 1; | |
46427374 TT |
633 | |
634 | return map; | |
635 | } | |
636 | ||
637 | /* Create and return a virtual location for a token that is part of a | |
638 | macro expansion-list at a macro expansion point. See the comment | |
639 | inside struct line_map_macro to see what an expansion-list exactly | |
640 | is. | |
641 | ||
642 | A call to this function must come after a call to | |
643 | linemap_enter_macro. | |
644 | ||
645 | MAP is the map into which the source location is created. TOKEN_NO | |
646 | is the index of the token in the macro replacement-list, starting | |
647 | at number 0. | |
648 | ||
649 | ORIG_LOC is the location of the token outside of this macro | |
650 | expansion. If the token comes originally from the macro | |
651 | definition, it is the locus in the macro definition; otherwise it | |
652 | is a location in the context of the caller of this macro expansion | |
653 | (which is a virtual location or a source location if the caller is | |
654 | itself a macro expansion or not). | |
655 | ||
3aac0952 | 656 | ORIG_PARM_REPLACEMENT_LOC is the location in the macro definition, |
46427374 TT |
657 | either of the token itself or of a macro parameter that it |
658 | replaces. */ | |
659 | ||
620e594b | 660 | location_t |
0e50b624 | 661 | linemap_add_macro_token (const line_map_macro *map, |
46427374 | 662 | unsigned int token_no, |
620e594b DM |
663 | location_t orig_loc, |
664 | location_t orig_parm_replacement_loc) | |
46427374 | 665 | { |
620e594b | 666 | location_t result; |
46427374 TT |
667 | |
668 | linemap_assert (linemap_macro_expansion_map_p (map)); | |
669 | linemap_assert (token_no < MACRO_MAP_NUM_MACRO_TOKENS (map)); | |
670 | ||
671 | MACRO_MAP_LOCATIONS (map)[2 * token_no] = orig_loc; | |
672 | MACRO_MAP_LOCATIONS (map)[2 * token_no + 1] = orig_parm_replacement_loc; | |
673 | ||
674 | result = MAP_START_LOCATION (map) + token_no; | |
675 | return result; | |
676 | } | |
677 | ||
620e594b | 678 | /* Return a location_t for the start (i.e. column==0) of |
46427374 TT |
679 | (physical) line TO_LINE in the current source file (as in the |
680 | most recent linemap_add). MAX_COLUMN_HINT is the highest column | |
681 | number we expect to use in this line (but it does not change | |
682 | the highest_location). */ | |
683 | ||
620e594b | 684 | location_t |
99b1c316 | 685 | linemap_line_start (line_maps *set, linenum_type to_line, |
12f9df4e PB |
686 | unsigned int max_column_hint) |
687 | { | |
0e50b624 | 688 | line_map_ordinary *map = LINEMAPS_LAST_ORDINARY_MAP (set); |
620e594b DM |
689 | location_t highest = set->highest_location; |
690 | location_t r; | |
46427374 TT |
691 | linenum_type last_line = |
692 | SOURCE_LINE (map, set->highest_line); | |
12f9df4e PB |
693 | int line_delta = to_line - last_line; |
694 | bool add_map = false; | |
ebedc9a3 DM |
695 | linemap_assert (map->m_column_and_range_bits >= map->m_range_bits); |
696 | int effective_column_bits = map->m_column_and_range_bits - map->m_range_bits; | |
46427374 | 697 | |
12f9df4e | 698 | if (line_delta < 0 |
46427374 | 699 | || (line_delta > 10 |
ebedc9a3 DM |
700 | && line_delta * map->m_column_and_range_bits > 1000) |
701 | || (max_column_hint >= (1U << effective_column_bits)) | |
702 | || (max_column_hint <= 80 && effective_column_bits >= 10) | |
c7df95d8 DM |
703 | || (highest > LINE_MAP_MAX_LOCATION_WITH_PACKED_RANGES |
704 | && map->m_range_bits > 0) | |
815facd3 | 705 | || (highest > LINE_MAP_MAX_LOCATION_WITH_COLS |
42a98b43 | 706 | && (set->max_column_hint || highest >= LINE_MAP_MAX_LOCATION))) |
43ba1c6c | 707 | add_map = true; |
12f9df4e PB |
708 | else |
709 | max_column_hint = set->max_column_hint; | |
710 | if (add_map) | |
711 | { | |
712 | int column_bits; | |
ebedc9a3 | 713 | int range_bits; |
815facd3 MLI |
714 | if (max_column_hint > LINE_MAP_MAX_COLUMN_NUMBER |
715 | || highest > LINE_MAP_MAX_LOCATION_WITH_COLS) | |
12f9df4e | 716 | { |
c1fc5047 | 717 | /* If the column number is ridiculous or we've allocated a huge |
620e594b | 718 | number of location_ts, give up on column numbers |
ebedc9a3 | 719 | (and on packed ranges). */ |
12f9df4e | 720 | max_column_hint = 0; |
12f9df4e | 721 | column_bits = 0; |
ebedc9a3 | 722 | range_bits = 0; |
42a98b43 | 723 | if (highest >= LINE_MAP_MAX_LOCATION) |
815facd3 | 724 | return 0; |
12f9df4e PB |
725 | } |
726 | else | |
727 | { | |
728 | column_bits = 7; | |
c7df95d8 DM |
729 | if (highest <= LINE_MAP_MAX_LOCATION_WITH_PACKED_RANGES) |
730 | range_bits = set->default_range_bits; | |
731 | else | |
732 | range_bits = 0; | |
12f9df4e PB |
733 | while (max_column_hint >= (1U << column_bits)) |
734 | column_bits++; | |
735 | max_column_hint = 1U << column_bits; | |
ebedc9a3 | 736 | column_bits += range_bits; |
12f9df4e | 737 | } |
c1fc5047 PB |
738 | /* Allocate the new line_map. However, if the current map only has a |
739 | single line we can sometimes just increase its column_bits instead. */ | |
12f9df4e | 740 | if (line_delta < 0 |
46427374 | 741 | || last_line != ORDINARY_MAP_STARTING_LINE_NUMBER (map) |
5ccf1d8d | 742 | || SOURCE_COLUMN (map, highest) >= (1U << (column_bits - range_bits)) |
a4553534 DM |
743 | || ( /* We can't reuse the map if the line offset is sufficiently |
744 | large to cause overflow when computing location_t values. */ | |
745 | (to_line - ORDINARY_MAP_STARTING_LINE_NUMBER (map)) | |
a5f87af7 ML |
746 | >= (((uint64_t) 1) |
747 | << (CHAR_BIT * sizeof (linenum_type) - column_bits))) | |
c7df95d8 | 748 | || range_bits < map->m_range_bits) |
0e50b624 DM |
749 | map = linemap_check_ordinary |
750 | (const_cast <line_map *> | |
751 | (linemap_add (set, LC_RENAME, | |
752 | ORDINARY_MAP_IN_SYSTEM_HEADER_P (map), | |
753 | ORDINARY_MAP_FILE_NAME (map), | |
754 | to_line))); | |
ebedc9a3 DM |
755 | map->m_column_and_range_bits = column_bits; |
756 | map->m_range_bits = range_bits; | |
46427374 TT |
757 | r = (MAP_START_LOCATION (map) |
758 | + ((to_line - ORDINARY_MAP_STARTING_LINE_NUMBER (map)) | |
759 | << column_bits)); | |
12f9df4e PB |
760 | } |
761 | else | |
ebedc9a3 | 762 | r = set->highest_line + (line_delta << map->m_column_and_range_bits); |
46427374 TT |
763 | |
764 | /* Locations of ordinary tokens are always lower than locations of | |
765 | macro tokens. */ | |
42a98b43 | 766 | if (r >= LINE_MAP_MAX_LOCATION) |
46427374 TT |
767 | return 0; |
768 | ||
500bee0a | 769 | set->highest_line = r; |
12f9df4e PB |
770 | if (r > set->highest_location) |
771 | set->highest_location = r; | |
772 | set->max_column_hint = max_column_hint; | |
ebedc9a3 DM |
773 | |
774 | /* At this point, we expect one of: | |
775 | (a) the normal case: a "pure" location with 0 range bits, or | |
776 | (b) we've gone past LINE_MAP_MAX_LOCATION_WITH_COLS so can't track | |
777 | columns anymore (or ranges), or | |
778 | (c) we're in a region with a column hint exceeding | |
779 | LINE_MAP_MAX_COLUMN_NUMBER, so column-tracking is off, | |
780 | with column_bits == 0. */ | |
781 | linemap_assert (pure_location_p (set, r) | |
782 | || r >= LINE_MAP_MAX_LOCATION_WITH_COLS | |
783 | || map->m_column_and_range_bits == 0); | |
784 | linemap_assert (SOURCE_LINE (map, r) == to_line); | |
12f9df4e PB |
785 | return r; |
786 | } | |
787 | ||
620e594b | 788 | /* Encode and return a location_t from a column number. The |
46427374 TT |
789 | source line considered is the last source line used to call |
790 | linemap_line_start, i.e, the last source line which a location was | |
791 | encoded from. */ | |
792 | ||
620e594b | 793 | location_t |
99b1c316 | 794 | linemap_position_for_column (line_maps *set, unsigned int to_column) |
500bee0a | 795 | { |
620e594b | 796 | location_t r = set->highest_line; |
46427374 TT |
797 | |
798 | linemap_assert | |
799 | (!linemap_macro_expansion_map_p (LINEMAPS_LAST_ORDINARY_MAP (set))); | |
800 | ||
500bee0a PB |
801 | if (to_column >= set->max_column_hint) |
802 | { | |
815facd3 MLI |
803 | if (r > LINE_MAP_MAX_LOCATION_WITH_COLS |
804 | || to_column > LINE_MAP_MAX_COLUMN_NUMBER) | |
500bee0a | 805 | { |
620e594b | 806 | /* Running low on location_ts - disable column numbers. */ |
500bee0a PB |
807 | return r; |
808 | } | |
809 | else | |
810 | { | |
b9f4757f DM |
811 | /* Otherwise, attempt to start a new line that can hold TO_COLUMN, |
812 | with some space to spare. This may or may not lead to a new | |
813 | linemap being created. */ | |
0e50b624 | 814 | line_map_ordinary *map = LINEMAPS_LAST_ORDINARY_MAP (set); |
500bee0a | 815 | r = linemap_line_start (set, SOURCE_LINE (map, r), to_column + 50); |
b9f4757f DM |
816 | map = LINEMAPS_LAST_ORDINARY_MAP (set); |
817 | if (map->m_column_and_range_bits == 0) | |
818 | { | |
819 | /* ...then the linemap has column-tracking disabled, | |
820 | presumably due to exceeding either | |
821 | LINE_MAP_MAX_LOCATION_WITH_COLS (overall) or | |
822 | LINE_MAP_MAX_COLUMN_NUMBER (within this line). | |
823 | Return the start of the linemap, which encodes column 0, for | |
824 | the whole line. */ | |
825 | return r; | |
826 | } | |
500bee0a PB |
827 | } |
828 | } | |
ebedc9a3 DM |
829 | line_map_ordinary *map = LINEMAPS_LAST_ORDINARY_MAP (set); |
830 | r = r + (to_column << map->m_range_bits); | |
500bee0a PB |
831 | if (r >= set->highest_location) |
832 | set->highest_location = r; | |
833 | return r; | |
834 | } | |
835 | ||
46427374 TT |
836 | /* Encode and return a source location from a given line and |
837 | column. */ | |
d82fc108 | 838 | |
620e594b | 839 | location_t |
ebedc9a3 DM |
840 | linemap_position_for_line_and_column (line_maps *set, |
841 | const line_map_ordinary *ord_map, | |
46427374 TT |
842 | linenum_type line, |
843 | unsigned column) | |
844 | { | |
0e50b624 | 845 | linemap_assert (ORDINARY_MAP_STARTING_LINE_NUMBER (ord_map) <= line); |
46427374 | 846 | |
620e594b | 847 | location_t r = MAP_START_LOCATION (ord_map); |
ebedc9a3 DM |
848 | r += ((line - ORDINARY_MAP_STARTING_LINE_NUMBER (ord_map)) |
849 | << ord_map->m_column_and_range_bits); | |
850 | if (r <= LINE_MAP_MAX_LOCATION_WITH_COLS) | |
851 | r += ((column & ((1 << ord_map->m_column_and_range_bits) - 1)) | |
852 | << ord_map->m_range_bits); | |
620e594b | 853 | location_t upper_limit = LINEMAPS_MACRO_LOWEST_LOCATION (set); |
ebedc9a3 DM |
854 | if (r >= upper_limit) |
855 | r = upper_limit - 1; | |
856 | if (r > set->highest_location) | |
857 | set->highest_location = r; | |
858 | return r; | |
46427374 TT |
859 | } |
860 | ||
620e594b | 861 | /* Encode and return a location_t starting from location LOC and |
7168133a | 862 | shifting it by COLUMN_OFFSET columns. This function does not support |
3aa34c1d MLI |
863 | virtual locations. */ |
864 | ||
620e594b | 865 | location_t |
99b1c316 | 866 | linemap_position_for_loc_and_offset (line_maps *set, |
620e594b | 867 | location_t loc, |
7168133a | 868 | unsigned int column_offset) |
3aa34c1d | 869 | { |
0e50b624 | 870 | const line_map_ordinary * map = NULL; |
3aa34c1d | 871 | |
ebedc9a3 | 872 | if (IS_ADHOC_LOC (loc)) |
e6fc8353 | 873 | loc = get_location_from_adhoc_loc (set, loc); |
ebedc9a3 | 874 | |
3aa34c1d | 875 | /* This function does not support virtual locations yet. */ |
338035aa | 876 | if (linemap_location_from_macro_expansion_p (set, loc)) |
73bd8329 | 877 | return loc; |
3aa34c1d | 878 | |
7168133a | 879 | if (column_offset == 0 |
3aa34c1d MLI |
880 | /* Adding an offset to a reserved location (like |
881 | UNKNOWN_LOCATION for the C/C++ FEs) does not really make | |
882 | sense. So let's leave the location intact in that case. */ | |
883 | || loc < RESERVED_LOCATION_COUNT) | |
884 | return loc; | |
885 | ||
886 | /* We find the real location and shift it. */ | |
887 | loc = linemap_resolve_location (set, loc, LRK_SPELLING_LOCATION, &map); | |
888 | /* The new location (loc + offset) should be higher than the first | |
87b470b3 MLI |
889 | location encoded by MAP. This can fail if the line information |
890 | is messed up because of line directives (see PR66415). */ | |
7168133a | 891 | if (MAP_START_LOCATION (map) >= loc + (column_offset << map->m_range_bits)) |
73bd8329 | 892 | return loc; |
3aa34c1d | 893 | |
87b470b3 MLI |
894 | linenum_type line = SOURCE_LINE (map, loc); |
895 | unsigned int column = SOURCE_COLUMN (map, loc); | |
896 | ||
3aa34c1d MLI |
897 | /* If MAP is not the last line map of its set, then the new location |
898 | (loc + offset) should be less than the first location encoded by | |
87b470b3 MLI |
899 | the next line map of the set. Otherwise, we try to encode the |
900 | location in the next map. */ | |
901 | while (map != LINEMAPS_LAST_ORDINARY_MAP (set) | |
7168133a DM |
902 | && (loc + (column_offset << map->m_range_bits) |
903 | >= MAP_START_LOCATION (&map[1]))) | |
87b470b3 MLI |
904 | { |
905 | map = &map[1]; | |
906 | /* If the next map starts in a higher line, we cannot encode the | |
907 | location there. */ | |
908 | if (line < ORDINARY_MAP_STARTING_LINE_NUMBER (map)) | |
909 | return loc; | |
910 | } | |
3aa34c1d | 911 | |
7168133a | 912 | column += column_offset; |
b9f4757f DM |
913 | |
914 | /* Bail out if the column is not representable within the existing | |
915 | linemap. */ | |
916 | if (column >= (1u << (map->m_column_and_range_bits - map->m_range_bits))) | |
73bd8329 | 917 | return loc; |
3aa34c1d | 918 | |
620e594b | 919 | location_t r = |
7168133a | 920 | linemap_position_for_line_and_column (set, map, line, column); |
b93c0722 MLI |
921 | if (linemap_assert_fails (r <= set->highest_location) |
922 | || linemap_assert_fails (map == linemap_lookup (set, r))) | |
73bd8329 MLI |
923 | return loc; |
924 | ||
3aa34c1d MLI |
925 | return r; |
926 | } | |
927 | ||
46427374 TT |
928 | /* Given a virtual source location yielded by a map (either an |
929 | ordinary or a macro map), returns that map. */ | |
930 | ||
931 | const struct line_map* | |
99b1c316 | 932 | linemap_lookup (line_maps *set, location_t line) |
46427374 | 933 | { |
5368224f | 934 | if (IS_ADHOC_LOC (line)) |
e6fc8353 | 935 | line = get_location_from_adhoc_loc (set, line); |
46427374 TT |
936 | if (linemap_location_from_macro_expansion_p (set, line)) |
937 | return linemap_macro_map_lookup (set, line); | |
938 | return linemap_ordinary_map_lookup (set, line); | |
939 | } | |
940 | ||
941 | /* Given a source location yielded by an ordinary map, returns that | |
942 | map. Since the set is built chronologically, the logical lines are | |
943 | monotonic increasing, and so the list is sorted and we can use a | |
944 | binary search. */ | |
945 | ||
0e50b624 | 946 | static const line_map_ordinary * |
99b1c316 | 947 | linemap_ordinary_map_lookup (line_maps *set, location_t line) |
d82fc108 | 948 | { |
9132fbb7 | 949 | unsigned int md, mn, mx; |
0e50b624 | 950 | const line_map_ordinary *cached, *result; |
9132fbb7 | 951 | |
5368224f | 952 | if (IS_ADHOC_LOC (line)) |
e6fc8353 | 953 | line = get_location_from_adhoc_loc (set, line); |
5368224f | 954 | |
46427374 TT |
955 | if (set == NULL || line < RESERVED_LOCATION_COUNT) |
956 | return NULL; | |
957 | ||
958 | mn = LINEMAPS_ORDINARY_CACHE (set); | |
959 | mx = LINEMAPS_ORDINARY_USED (set); | |
9132fbb7 | 960 | |
46427374 | 961 | cached = LINEMAPS_ORDINARY_MAP_AT (set, mn); |
9ac97460 | 962 | /* We should get a segfault if no line_maps have been added yet. */ |
46427374 | 963 | if (line >= MAP_START_LOCATION (cached)) |
9132fbb7 | 964 | { |
46427374 | 965 | if (mn + 1 == mx || line < MAP_START_LOCATION (&cached[1])) |
9132fbb7 PB |
966 | return cached; |
967 | } | |
968 | else | |
969 | { | |
970 | mx = mn; | |
971 | mn = 0; | |
972 | } | |
d82fc108 NB |
973 | |
974 | while (mx - mn > 1) | |
975 | { | |
976 | md = (mn + mx) / 2; | |
46427374 | 977 | if (MAP_START_LOCATION (LINEMAPS_ORDINARY_MAP_AT (set, md)) > line) |
d82fc108 NB |
978 | mx = md; |
979 | else | |
980 | mn = md; | |
981 | } | |
982 | ||
46427374 TT |
983 | LINEMAPS_ORDINARY_CACHE (set) = mn; |
984 | result = LINEMAPS_ORDINARY_MAP_AT (set, mn); | |
985 | linemap_assert (line >= MAP_START_LOCATION (result)); | |
986 | return result; | |
987 | } | |
988 | ||
989 | /* Given a source location yielded by a macro map, returns that map. | |
990 | Since the set is built chronologically, the logical lines are | |
991 | monotonic decreasing, and so the list is sorted and we can use a | |
992 | binary search. */ | |
993 | ||
0e50b624 | 994 | static const line_map_macro * |
99b1c316 | 995 | linemap_macro_map_lookup (line_maps *set, location_t line) |
46427374 TT |
996 | { |
997 | unsigned int md, mn, mx; | |
0e50b624 | 998 | const struct line_map_macro *cached, *result; |
46427374 | 999 | |
5368224f | 1000 | if (IS_ADHOC_LOC (line)) |
e6fc8353 | 1001 | line = get_location_from_adhoc_loc (set, line); |
5368224f | 1002 | |
46427374 TT |
1003 | linemap_assert (line >= LINEMAPS_MACRO_LOWEST_LOCATION (set)); |
1004 | ||
1005 | if (set == NULL) | |
1006 | return NULL; | |
1007 | ||
1008 | mn = LINEMAPS_MACRO_CACHE (set); | |
1009 | mx = LINEMAPS_MACRO_USED (set); | |
1010 | cached = LINEMAPS_MACRO_MAP_AT (set, mn); | |
1011 | ||
1012 | if (line >= MAP_START_LOCATION (cached)) | |
1013 | { | |
1014 | if (mn == 0 || line < MAP_START_LOCATION (&cached[-1])) | |
1015 | return cached; | |
1016 | mx = mn - 1; | |
1017 | mn = 0; | |
1018 | } | |
1019 | ||
3bb0c8db | 1020 | while (mn < mx) |
46427374 TT |
1021 | { |
1022 | md = (mx + mn) / 2; | |
1023 | if (MAP_START_LOCATION (LINEMAPS_MACRO_MAP_AT (set, md)) > line) | |
3bb0c8db | 1024 | mn = md + 1; |
46427374 TT |
1025 | else |
1026 | mx = md; | |
3bb0c8db | 1027 | } |
46427374 TT |
1028 | |
1029 | LINEMAPS_MACRO_CACHE (set) = mx; | |
1030 | result = LINEMAPS_MACRO_MAP_AT (set, LINEMAPS_MACRO_CACHE (set)); | |
1031 | linemap_assert (MAP_START_LOCATION (result) <= line); | |
1032 | ||
1033 | return result; | |
1034 | } | |
1035 | ||
1036 | /* Return TRUE if MAP encodes locations coming from a macro | |
1037 | replacement-list at macro expansion point. */ | |
1038 | ||
1039 | bool | |
1040 | linemap_macro_expansion_map_p (const struct line_map *map) | |
1041 | { | |
42a98b43 | 1042 | return map && !MAP_ORDINARY_P (map); |
46427374 TT |
1043 | } |
1044 | ||
1045 | /* If LOCATION is the locus of a token in a replacement-list of a | |
1046 | macro expansion return the location of the macro expansion point. | |
1047 | ||
1048 | Read the comments of struct line_map and struct line_map_macro in | |
1049 | line-map.h to understand what a macro expansion point is. */ | |
1050 | ||
620e594b | 1051 | static location_t |
0e50b624 | 1052 | linemap_macro_map_loc_to_exp_point (const line_map_macro *map, |
620e594b | 1053 | location_t location ATTRIBUTE_UNUSED) |
46427374 | 1054 | { |
46427374 TT |
1055 | linemap_assert (linemap_macro_expansion_map_p (map) |
1056 | && location >= MAP_START_LOCATION (map)); | |
1057 | ||
1058 | /* Make sure LOCATION is correct. */ | |
411f92de DS |
1059 | linemap_assert ((location - MAP_START_LOCATION (map)) |
1060 | < MACRO_MAP_NUM_MACRO_TOKENS (map)); | |
46427374 TT |
1061 | |
1062 | return MACRO_MAP_EXPANSION_POINT_LOCATION (map); | |
1063 | } | |
1064 | ||
3aac0952 MLI |
1065 | /* LOCATION is the source location of a token that belongs to a macro |
1066 | replacement-list as part of the macro expansion denoted by MAP. | |
46427374 | 1067 | |
3aac0952 MLI |
1068 | Return the location of the token at the definition point of the |
1069 | macro. */ | |
1070 | ||
620e594b | 1071 | static location_t |
0e50b624 | 1072 | linemap_macro_map_loc_to_def_point (const line_map_macro *map, |
620e594b | 1073 | location_t location) |
46427374 TT |
1074 | { |
1075 | unsigned token_no; | |
1076 | ||
1077 | linemap_assert (linemap_macro_expansion_map_p (map) | |
1078 | && location >= MAP_START_LOCATION (map)); | |
1079 | linemap_assert (location >= RESERVED_LOCATION_COUNT); | |
1080 | ||
1081 | token_no = location - MAP_START_LOCATION (map); | |
1082 | linemap_assert (token_no < MACRO_MAP_NUM_MACRO_TOKENS (map)); | |
1083 | ||
1084 | location = MACRO_MAP_LOCATIONS (map)[2 * token_no + 1]; | |
1085 | ||
1086 | return location; | |
1087 | } | |
1088 | ||
1089 | /* If LOCATION is the locus of a token that is an argument of a | |
1090 | function-like macro M and appears in the expansion of M, return the | |
1091 | locus of that argument in the context of the caller of M. | |
1092 | ||
1093 | In other words, this returns the xI location presented in the | |
1094 | comments of line_map_macro above. */ | |
620e594b | 1095 | location_t |
ebedc9a3 DM |
1096 | linemap_macro_map_loc_unwind_toward_spelling (line_maps *set, |
1097 | const line_map_macro* map, | |
620e594b | 1098 | location_t location) |
46427374 TT |
1099 | { |
1100 | unsigned token_no; | |
1101 | ||
ebedc9a3 DM |
1102 | if (IS_ADHOC_LOC (location)) |
1103 | location = get_location_from_adhoc_loc (set, location); | |
1104 | ||
46427374 TT |
1105 | linemap_assert (linemap_macro_expansion_map_p (map) |
1106 | && location >= MAP_START_LOCATION (map)); | |
1107 | linemap_assert (location >= RESERVED_LOCATION_COUNT); | |
ebedc9a3 | 1108 | linemap_assert (!IS_ADHOC_LOC (location)); |
46427374 TT |
1109 | |
1110 | token_no = location - MAP_START_LOCATION (map); | |
1111 | linemap_assert (token_no < MACRO_MAP_NUM_MACRO_TOKENS (map)); | |
1112 | ||
1113 | location = MACRO_MAP_LOCATIONS (map)[2 * token_no]; | |
1114 | ||
1115 | return location; | |
1116 | } | |
1117 | ||
1118 | /* Return the source line number corresponding to source location | |
1119 | LOCATION. SET is the line map set LOCATION comes from. If | |
1120 | LOCATION is the source location of token that is part of the | |
1121 | replacement-list of a macro expansion return the line number of the | |
1122 | macro expansion point. */ | |
1123 | ||
1124 | int | |
99b1c316 | 1125 | linemap_get_expansion_line (line_maps *set, |
620e594b | 1126 | location_t location) |
46427374 | 1127 | { |
0e50b624 | 1128 | const line_map_ordinary *map = NULL; |
46427374 | 1129 | |
5368224f | 1130 | if (IS_ADHOC_LOC (location)) |
e6fc8353 | 1131 | location = get_location_from_adhoc_loc (set, location); |
5368224f | 1132 | |
46427374 TT |
1133 | if (location < RESERVED_LOCATION_COUNT) |
1134 | return 0; | |
1135 | ||
1136 | location = | |
1137 | linemap_macro_loc_to_exp_point (set, location, &map); | |
1138 | ||
1139 | return SOURCE_LINE (map, location); | |
1140 | } | |
1141 | ||
1142 | /* Return the path of the file corresponding to source code location | |
1143 | LOCATION. | |
1144 | ||
1145 | If LOCATION is the source location of token that is part of the | |
1146 | replacement-list of a macro expansion return the file path of the | |
1147 | macro expansion point. | |
1148 | ||
1149 | SET is the line map set LOCATION comes from. */ | |
1150 | ||
1151 | const char* | |
99b1c316 | 1152 | linemap_get_expansion_filename (line_maps *set, |
620e594b | 1153 | location_t location) |
46427374 | 1154 | { |
0e50b624 | 1155 | const struct line_map_ordinary *map = NULL; |
46427374 | 1156 | |
5368224f | 1157 | if (IS_ADHOC_LOC (location)) |
e6fc8353 | 1158 | location = get_location_from_adhoc_loc (set, location); |
5368224f | 1159 | |
46427374 TT |
1160 | if (location < RESERVED_LOCATION_COUNT) |
1161 | return NULL; | |
1162 | ||
8ba6ea87 | 1163 | linemap_macro_loc_to_exp_point (set, location, &map); |
46427374 TT |
1164 | |
1165 | return LINEMAP_FILE (map); | |
1166 | } | |
1167 | ||
1168 | /* Return the name of the macro associated to MACRO_MAP. */ | |
1169 | ||
1170 | const char* | |
0e50b624 | 1171 | linemap_map_get_macro_name (const line_map_macro *macro_map) |
46427374 TT |
1172 | { |
1173 | linemap_assert (macro_map && linemap_macro_expansion_map_p (macro_map)); | |
1174 | return (const char*) NODE_NAME (MACRO_MAP_MACRO (macro_map)); | |
1175 | } | |
1176 | ||
1177 | /* Return a positive value if LOCATION is the locus of a token that is | |
1178 | located in a system header, O otherwise. It returns 1 if LOCATION | |
1179 | is the locus of a token that is located in a system header, and 2 | |
1180 | if LOCATION is the locus of a token located in a C system header | |
1181 | that therefore needs to be extern "C" protected in C++. | |
1182 | ||
1183 | Note that this function returns 1 if LOCATION belongs to a token | |
1184 | that is part of a macro replacement-list defined in a system | |
1185 | header, but expanded in a non-system file. */ | |
1186 | ||
1187 | int | |
99b1c316 | 1188 | linemap_location_in_system_header_p (line_maps *set, |
620e594b | 1189 | location_t location) |
46427374 TT |
1190 | { |
1191 | const struct line_map *map = NULL; | |
1192 | ||
5368224f | 1193 | if (IS_ADHOC_LOC (location)) |
e6fc8353 | 1194 | location = get_location_from_adhoc_loc (set, location); |
5368224f | 1195 | |
84756fd4 DS |
1196 | if (location < RESERVED_LOCATION_COUNT) |
1197 | return false; | |
1198 | ||
7ca643e1 DS |
1199 | /* Let's look at where the token for LOCATION comes from. */ |
1200 | while (true) | |
1201 | { | |
1202 | map = linemap_lookup (set, location); | |
1203 | if (map != NULL) | |
1204 | { | |
1205 | if (!linemap_macro_expansion_map_p (map)) | |
1206 | /* It's a normal token. */ | |
0e50b624 | 1207 | return LINEMAP_SYSP (linemap_check_ordinary (map)); |
7ca643e1 DS |
1208 | else |
1209 | { | |
0e50b624 DM |
1210 | const line_map_macro *macro_map = linemap_check_macro (map); |
1211 | ||
7ca643e1 | 1212 | /* It's a token resulting from a macro expansion. */ |
620e594b | 1213 | location_t loc = |
ebedc9a3 | 1214 | linemap_macro_map_loc_unwind_toward_spelling (set, macro_map, location); |
7ca643e1 DS |
1215 | if (loc < RESERVED_LOCATION_COUNT) |
1216 | /* This token might come from a built-in macro. Let's | |
1217 | look at where that macro got expanded. */ | |
0e50b624 | 1218 | location = linemap_macro_map_loc_to_exp_point (macro_map, location); |
7ca643e1 DS |
1219 | else |
1220 | location = loc; | |
1221 | } | |
1222 | } | |
1223 | else | |
1224 | break; | |
1225 | } | |
1226 | return false; | |
46427374 TT |
1227 | } |
1228 | ||
63cb3926 JM |
1229 | /* Return TRUE if LOCATION is a source code location of a token that is part of |
1230 | a macro expansion, FALSE otherwise. */ | |
46427374 TT |
1231 | |
1232 | bool | |
99b1c316 | 1233 | linemap_location_from_macro_expansion_p (const class line_maps *set, |
620e594b | 1234 | location_t location) |
46427374 | 1235 | { |
5368224f | 1236 | if (IS_ADHOC_LOC (location)) |
e6fc8353 | 1237 | location = get_location_from_adhoc_loc (set, location); |
5368224f | 1238 | |
87bacc2b | 1239 | return IS_MACRO_LOC (location); |
46427374 TT |
1240 | } |
1241 | ||
1242 | /* Given two virtual locations *LOC0 and *LOC1, return the first | |
1243 | common macro map in their macro expansion histories. Return NULL | |
1244 | if no common macro was found. *LOC0 (resp. *LOC1) is set to the | |
1245 | virtual location of the token inside the resulting macro. */ | |
1246 | ||
1247 | static const struct line_map* | |
99b1c316 | 1248 | first_map_in_common_1 (line_maps *set, |
620e594b DM |
1249 | location_t *loc0, |
1250 | location_t *loc1) | |
46427374 | 1251 | { |
620e594b | 1252 | location_t l0 = *loc0, l1 = *loc1; |
19eda56d ML |
1253 | const struct line_map *map0 = linemap_lookup (set, l0); |
1254 | if (IS_ADHOC_LOC (l0)) | |
1255 | l0 = get_location_from_adhoc_loc (set, l0); | |
1256 | ||
1257 | const struct line_map *map1 = linemap_lookup (set, l1); | |
1258 | if (IS_ADHOC_LOC (l1)) | |
1259 | l1 = get_location_from_adhoc_loc (set, l1); | |
46427374 TT |
1260 | |
1261 | while (linemap_macro_expansion_map_p (map0) | |
1262 | && linemap_macro_expansion_map_p (map1) | |
1263 | && (map0 != map1)) | |
1264 | { | |
1265 | if (MAP_START_LOCATION (map0) < MAP_START_LOCATION (map1)) | |
1266 | { | |
0e50b624 DM |
1267 | l0 = linemap_macro_map_loc_to_exp_point (linemap_check_macro (map0), |
1268 | l0); | |
46427374 TT |
1269 | map0 = linemap_lookup (set, l0); |
1270 | } | |
1271 | else | |
1272 | { | |
0e50b624 DM |
1273 | l1 = linemap_macro_map_loc_to_exp_point (linemap_check_macro (map1), |
1274 | l1); | |
46427374 TT |
1275 | map1 = linemap_lookup (set, l1); |
1276 | } | |
1277 | } | |
1278 | ||
1279 | if (map0 == map1) | |
1280 | { | |
1281 | *loc0 = l0; | |
1282 | *loc1 = l1; | |
1283 | return map0; | |
1284 | } | |
1285 | return NULL; | |
1286 | } | |
1287 | ||
1288 | /* Given two virtual locations LOC0 and LOC1, return the first common | |
1289 | macro map in their macro expansion histories. Return NULL if no | |
1290 | common macro was found. *RES_LOC0 (resp. *RES_LOC1) is set to the | |
1291 | virtual location of the token inside the resulting macro, upon | |
1292 | return of a non-NULL result. */ | |
1293 | ||
1294 | static const struct line_map* | |
99b1c316 | 1295 | first_map_in_common (line_maps *set, |
620e594b DM |
1296 | location_t loc0, |
1297 | location_t loc1, | |
1298 | location_t *res_loc0, | |
1299 | location_t *res_loc1) | |
46427374 TT |
1300 | { |
1301 | *res_loc0 = loc0; | |
1302 | *res_loc1 = loc1; | |
1303 | ||
1304 | return first_map_in_common_1 (set, res_loc0, res_loc1); | |
1305 | } | |
1306 | ||
1307 | /* Return a positive value if PRE denotes the location of a token that | |
1308 | comes before the token of POST, 0 if PRE denotes the location of | |
1309 | the same token as the token for POST, and a negative value | |
1310 | otherwise. */ | |
1311 | ||
1312 | int | |
99b1c316 | 1313 | linemap_compare_locations (line_maps *set, |
620e594b DM |
1314 | location_t pre, |
1315 | location_t post) | |
46427374 TT |
1316 | { |
1317 | bool pre_virtual_p, post_virtual_p; | |
620e594b | 1318 | location_t l0 = pre, l1 = post; |
46427374 | 1319 | |
acf601ae | 1320 | if (IS_ADHOC_LOC (l0)) |
196440f8 | 1321 | l0 = get_location_from_adhoc_loc (set, l0); |
acf601ae | 1322 | if (IS_ADHOC_LOC (l1)) |
196440f8 | 1323 | l1 = get_location_from_adhoc_loc (set, l1); |
acf601ae | 1324 | |
46427374 TT |
1325 | if (l0 == l1) |
1326 | return 0; | |
1327 | ||
1328 | if ((pre_virtual_p = linemap_location_from_macro_expansion_p (set, l0))) | |
1329 | l0 = linemap_resolve_location (set, l0, | |
1330 | LRK_MACRO_EXPANSION_POINT, | |
1331 | NULL); | |
1332 | ||
1333 | if ((post_virtual_p = linemap_location_from_macro_expansion_p (set, l1))) | |
1334 | l1 = linemap_resolve_location (set, l1, | |
1335 | LRK_MACRO_EXPANSION_POINT, | |
1336 | NULL); | |
1337 | ||
1338 | if (l0 == l1 | |
1339 | && pre_virtual_p | |
1340 | && post_virtual_p) | |
1341 | { | |
1342 | /* So pre and post represent two tokens that are present in a | |
1343 | same macro expansion. Let's see if the token for pre was | |
1344 | before the token for post in that expansion. */ | |
1345 | unsigned i0, i1; | |
1346 | const struct line_map *map = | |
1347 | first_map_in_common (set, pre, post, &l0, &l1); | |
1348 | ||
1349 | if (map == NULL) | |
1350 | /* This should not be possible. */ | |
1351 | abort (); | |
1352 | ||
1353 | i0 = l0 - MAP_START_LOCATION (map); | |
1354 | i1 = l1 - MAP_START_LOCATION (map); | |
1355 | return i1 - i0; | |
1356 | } | |
1357 | ||
196440f8 DM |
1358 | if (IS_ADHOC_LOC (l0)) |
1359 | l0 = get_location_from_adhoc_loc (set, l0); | |
1360 | if (IS_ADHOC_LOC (l1)) | |
1361 | l1 = get_location_from_adhoc_loc (set, l1); | |
1362 | ||
46427374 | 1363 | return l1 - l0; |
d82fc108 | 1364 | } |
fde84349 | 1365 | |
5993019d NB |
1366 | /* Print an include trace, for e.g. the -H option of the preprocessor. */ |
1367 | ||
1368 | static void | |
99b1c316 | 1369 | trace_include (const class line_maps *set, const line_map_ordinary *map) |
5993019d | 1370 | { |
d8693c6f | 1371 | unsigned int i = set->depth; |
5993019d | 1372 | |
d8693c6f | 1373 | while (--i) |
5993019d | 1374 | putc ('.', stderr); |
46427374 TT |
1375 | |
1376 | fprintf (stderr, " %s\n", ORDINARY_MAP_FILE_NAME (map)); | |
1377 | } | |
1378 | ||
1379 | /* Return the spelling location of the token wherever it comes from, | |
1380 | whether part of a macro definition or not. | |
1381 | ||
1382 | This is a subroutine for linemap_resolve_location. */ | |
1383 | ||
620e594b | 1384 | static location_t |
99b1c316 | 1385 | linemap_macro_loc_to_spelling_point (line_maps *set, |
620e594b | 1386 | location_t location, |
0e50b624 | 1387 | const line_map_ordinary **original_map) |
46427374 | 1388 | { |
46427374 TT |
1389 | linemap_assert (set && location >= RESERVED_LOCATION_COUNT); |
1390 | ||
1391 | while (true) | |
1392 | { | |
42a98b43 NS |
1393 | const struct line_map *map = linemap_lookup (set, location); |
1394 | if (!map || MAP_ORDINARY_P (map)) | |
1395 | { | |
1396 | if (original_map) | |
1397 | *original_map = (const line_map_ordinary *)map; | |
1398 | break; | |
1399 | } | |
46427374 | 1400 | |
42a98b43 NS |
1401 | location = linemap_macro_map_loc_unwind_toward_spelling |
1402 | (set, linemap_check_macro (map), location); | |
46427374 TT |
1403 | } |
1404 | ||
46427374 TT |
1405 | return location; |
1406 | } | |
1407 | ||
1408 | /* If LOCATION is the source location of a token that belongs to a | |
1409 | macro replacement-list -- as part of a macro expansion -- then | |
1410 | return the location of the token at the definition point of the | |
1411 | macro. Otherwise, return LOCATION. SET is the set of maps | |
1412 | location come from. ORIGINAL_MAP is an output parm. If non NULL, | |
1413 | the function sets *ORIGINAL_MAP to the ordinary (non-macro) map the | |
1414 | returned location comes from. | |
1415 | ||
1416 | This is a subroutine of linemap_resolve_location. */ | |
1417 | ||
620e594b | 1418 | static location_t |
99b1c316 | 1419 | linemap_macro_loc_to_def_point (line_maps *set, |
620e594b | 1420 | location_t location, |
0e50b624 | 1421 | const line_map_ordinary **original_map) |
46427374 | 1422 | { |
46427374 TT |
1423 | linemap_assert (set && location >= RESERVED_LOCATION_COUNT); |
1424 | ||
42a98b43 | 1425 | for (;;) |
46427374 | 1426 | { |
620e594b | 1427 | location_t caret_loc = location; |
42a98b43 NS |
1428 | if (IS_ADHOC_LOC (caret_loc)) |
1429 | caret_loc = get_location_from_adhoc_loc (set, caret_loc); | |
738f7c2e | 1430 | |
42a98b43 NS |
1431 | const line_map *map = linemap_lookup (set, caret_loc); |
1432 | if (!map || MAP_ORDINARY_P (map)) | |
1433 | { | |
1434 | if (original_map) | |
1435 | *original_map = (const line_map_ordinary *)map; | |
1436 | break; | |
1437 | } | |
46427374 | 1438 | |
42a98b43 NS |
1439 | location = linemap_macro_map_loc_to_def_point |
1440 | (linemap_check_macro (map), caret_loc); | |
46427374 TT |
1441 | } |
1442 | ||
46427374 TT |
1443 | return location; |
1444 | } | |
1445 | ||
1446 | /* If LOCATION is the source location of a token that belongs to a | |
1447 | macro replacement-list -- at a macro expansion point -- then return | |
1448 | the location of the topmost expansion point of the macro. We say | |
1449 | topmost because if we are in the context of a nested macro | |
1450 | expansion, the function returns the source location of the first | |
1451 | macro expansion that triggered the nested expansions. | |
1452 | ||
1453 | Otherwise, return LOCATION. SET is the set of maps location come | |
1454 | from. ORIGINAL_MAP is an output parm. If non NULL, the function | |
1455 | sets *ORIGINAL_MAP to the ordinary (non-macro) map the returned | |
1456 | location comes from. | |
1457 | ||
1458 | This is a subroutine of linemap_resolve_location. */ | |
1459 | ||
620e594b | 1460 | static location_t |
99b1c316 | 1461 | linemap_macro_loc_to_exp_point (line_maps *set, |
620e594b | 1462 | location_t location, |
0e50b624 | 1463 | const line_map_ordinary **original_map) |
46427374 TT |
1464 | { |
1465 | struct line_map *map; | |
1466 | ||
5368224f | 1467 | if (IS_ADHOC_LOC (location)) |
e6fc8353 | 1468 | location = get_location_from_adhoc_loc (set, location); |
5368224f | 1469 | |
46427374 TT |
1470 | linemap_assert (set && location >= RESERVED_LOCATION_COUNT); |
1471 | ||
1472 | while (true) | |
1473 | { | |
0e50b624 | 1474 | map = const_cast <line_map *> (linemap_lookup (set, location)); |
46427374 TT |
1475 | if (!linemap_macro_expansion_map_p (map)) |
1476 | break; | |
0e50b624 DM |
1477 | location = linemap_macro_map_loc_to_exp_point (linemap_check_macro (map), |
1478 | location); | |
46427374 TT |
1479 | } |
1480 | ||
1481 | if (original_map) | |
0e50b624 | 1482 | *original_map = linemap_check_ordinary (map); |
46427374 TT |
1483 | return location; |
1484 | } | |
1485 | ||
1486 | /* Resolve a virtual location into either a spelling location, an | |
1487 | expansion point location or a token argument replacement point | |
1488 | location. Return the map that encodes the virtual location as well | |
1489 | as the resolved location. | |
1490 | ||
1491 | If LOC is *NOT* the location of a token resulting from the | |
1492 | expansion of a macro, then the parameter LRK (which stands for | |
1493 | Location Resolution Kind) is ignored and the resulting location | |
1494 | just equals the one given in argument. | |
1495 | ||
1496 | Now if LOC *IS* the location of a token resulting from the | |
1497 | expansion of a macro, this is what happens. | |
1498 | ||
1499 | * If LRK is set to LRK_MACRO_EXPANSION_POINT | |
1500 | ------------------------------- | |
1501 | ||
1d72e96f MLI |
1502 | The virtual location is resolved to the first macro expansion point |
1503 | that led to this macro expansion. | |
46427374 TT |
1504 | |
1505 | * If LRK is set to LRK_SPELLING_LOCATION | |
1506 | ------------------------------------- | |
1507 | ||
1d72e96f MLI |
1508 | The virtual location is resolved to the locus where the token has |
1509 | been spelled in the source. This can follow through all the macro | |
1510 | expansions that led to the token. | |
46427374 | 1511 | |
1d72e96f | 1512 | * If LRK is set to LRK_MACRO_DEFINITION_LOCATION |
46427374 TT |
1513 | -------------------------------------- |
1514 | ||
1d72e96f MLI |
1515 | The virtual location is resolved to the locus of the token in the |
1516 | context of the macro definition. | |
1517 | ||
46427374 TT |
1518 | If LOC is the locus of a token that is an argument of a |
1519 | function-like macro [replacing a parameter in the replacement list | |
1520 | of the macro] the virtual location is resolved to the locus of the | |
1521 | parameter that is replaced, in the context of the definition of the | |
1522 | macro. | |
1523 | ||
1524 | If LOC is the locus of a token that is not an argument of a | |
1525 | function-like macro, then the function behaves as if LRK was set to | |
1526 | LRK_SPELLING_LOCATION. | |
1527 | ||
3aac0952 | 1528 | If MAP is not NULL, *MAP is set to the map encoding the |
1d72e96f | 1529 | returned location. Note that if the returned location wasn't originally |
3aac0952 | 1530 | encoded by a map, then *MAP is set to NULL. This can happen if LOC |
84756fd4 DS |
1531 | resolves to a location reserved for the client code, like |
1532 | UNKNOWN_LOCATION or BUILTINS_LOCATION in GCC. */ | |
46427374 | 1533 | |
620e594b | 1534 | location_t |
99b1c316 | 1535 | linemap_resolve_location (line_maps *set, |
620e594b | 1536 | location_t loc, |
46427374 | 1537 | enum location_resolution_kind lrk, |
0e50b624 | 1538 | const line_map_ordinary **map) |
46427374 | 1539 | { |
620e594b | 1540 | location_t locus = loc; |
5368224f | 1541 | if (IS_ADHOC_LOC (loc)) |
e6fc8353 | 1542 | locus = get_location_from_adhoc_loc (set, loc); |
5368224f | 1543 | |
ebedc9a3 | 1544 | if (locus < RESERVED_LOCATION_COUNT) |
84756fd4 DS |
1545 | { |
1546 | /* A reserved location wasn't encoded in a map. Let's return a | |
1547 | NULL map here, just like what linemap_ordinary_map_lookup | |
1548 | does. */ | |
1549 | if (map) | |
1550 | *map = NULL; | |
1551 | return loc; | |
1552 | } | |
46427374 TT |
1553 | |
1554 | switch (lrk) | |
1555 | { | |
1556 | case LRK_MACRO_EXPANSION_POINT: | |
1557 | loc = linemap_macro_loc_to_exp_point (set, loc, map); | |
1558 | break; | |
1559 | case LRK_SPELLING_LOCATION: | |
1560 | loc = linemap_macro_loc_to_spelling_point (set, loc, map); | |
1561 | break; | |
1562 | case LRK_MACRO_DEFINITION_LOCATION: | |
1563 | loc = linemap_macro_loc_to_def_point (set, loc, map); | |
1564 | break; | |
1565 | default: | |
1566 | abort (); | |
1567 | } | |
1568 | return loc; | |
1569 | } | |
1570 | ||
63cb3926 JM |
1571 | /* TRUE if LOCATION is a source code location of a token that is part of the |
1572 | definition of a macro, FALSE otherwise. */ | |
1573 | ||
1574 | bool | |
99b1c316 | 1575 | linemap_location_from_macro_definition_p (line_maps *set, |
620e594b | 1576 | location_t loc) |
63cb3926 JM |
1577 | { |
1578 | if (IS_ADHOC_LOC (loc)) | |
1579 | loc = get_location_from_adhoc_loc (set, loc); | |
1580 | ||
1581 | if (!linemap_location_from_macro_expansion_p (set, loc)) | |
1582 | return false; | |
1583 | ||
1584 | while (true) | |
1585 | { | |
1586 | const struct line_map_macro *map | |
1587 | = linemap_check_macro (linemap_lookup (set, loc)); | |
1588 | ||
620e594b | 1589 | location_t s_loc |
63cb3926 JM |
1590 | = linemap_macro_map_loc_unwind_toward_spelling (set, map, loc); |
1591 | if (linemap_location_from_macro_expansion_p (set, s_loc)) | |
1592 | loc = s_loc; | |
1593 | else | |
1594 | { | |
620e594b | 1595 | location_t def_loc |
63cb3926 JM |
1596 | = linemap_macro_map_loc_to_def_point (map, loc); |
1597 | return s_loc == def_loc; | |
1598 | } | |
1599 | } | |
1600 | } | |
1601 | ||
46427374 TT |
1602 | /* |
1603 | Suppose that LOC is the virtual location of a token T coming from | |
1604 | the expansion of a macro M. This function then steps up to get the | |
1605 | location L of the point where M got expanded. If L is a spelling | |
1606 | location inside a macro expansion M', then this function returns | |
1607 | the locus of the point where M' was expanded. Said otherwise, this | |
1608 | function returns the location of T in the context that triggered | |
1609 | the expansion of M. | |
1610 | ||
1611 | *LOC_MAP must be set to the map of LOC. This function then sets it | |
1612 | to the map of the returned location. */ | |
1613 | ||
620e594b | 1614 | location_t |
99b1c316 | 1615 | linemap_unwind_toward_expansion (line_maps *set, |
620e594b | 1616 | location_t loc, |
46427374 TT |
1617 | const struct line_map **map) |
1618 | { | |
620e594b | 1619 | location_t resolved_location; |
0e50b624 | 1620 | const line_map_macro *macro_map = linemap_check_macro (*map); |
46427374 TT |
1621 | const struct line_map *resolved_map; |
1622 | ||
5368224f | 1623 | if (IS_ADHOC_LOC (loc)) |
e6fc8353 | 1624 | loc = get_location_from_adhoc_loc (set, loc); |
5368224f | 1625 | |
46427374 | 1626 | resolved_location = |
ebedc9a3 | 1627 | linemap_macro_map_loc_unwind_toward_spelling (set, macro_map, loc); |
46427374 TT |
1628 | resolved_map = linemap_lookup (set, resolved_location); |
1629 | ||
1630 | if (!linemap_macro_expansion_map_p (resolved_map)) | |
1631 | { | |
0e50b624 | 1632 | resolved_location = linemap_macro_map_loc_to_exp_point (macro_map, loc); |
46427374 TT |
1633 | resolved_map = linemap_lookup (set, resolved_location); |
1634 | } | |
1635 | ||
1636 | *map = resolved_map; | |
1637 | return resolved_location; | |
1638 | } | |
1639 | ||
c4ca1a09 DS |
1640 | /* If LOC is the virtual location of a token coming from the expansion |
1641 | of a macro M and if its spelling location is reserved (e.g, a | |
1642 | location for a built-in token), then this function unwinds (using | |
1643 | linemap_unwind_toward_expansion) the location until a location that | |
7d9641cc | 1644 | is not reserved and is not in a system header is reached. In other |
c4ca1a09 DS |
1645 | words, this unwinds the reserved location until a location that is |
1646 | in real source code is reached. | |
1647 | ||
1648 | Otherwise, if the spelling location for LOC is not reserved or if | |
1649 | LOC doesn't come from the expansion of a macro, the function | |
1650 | returns LOC as is and *MAP is not touched. | |
1651 | ||
1652 | *MAP is set to the map of the returned location if the later is | |
1653 | different from LOC. */ | |
620e594b | 1654 | location_t |
99b1c316 | 1655 | linemap_unwind_to_first_non_reserved_loc (line_maps *set, |
620e594b | 1656 | location_t loc, |
c4ca1a09 DS |
1657 | const struct line_map **map) |
1658 | { | |
620e594b | 1659 | location_t resolved_loc; |
0e50b624 DM |
1660 | const struct line_map *map0 = NULL; |
1661 | const line_map_ordinary *map1 = NULL; | |
c4ca1a09 | 1662 | |
5368224f | 1663 | if (IS_ADHOC_LOC (loc)) |
e6fc8353 | 1664 | loc = get_location_from_adhoc_loc (set, loc); |
5368224f | 1665 | |
c4ca1a09 DS |
1666 | map0 = linemap_lookup (set, loc); |
1667 | if (!linemap_macro_expansion_map_p (map0)) | |
1668 | return loc; | |
1669 | ||
1670 | resolved_loc = linemap_resolve_location (set, loc, | |
1671 | LRK_SPELLING_LOCATION, | |
1672 | &map1); | |
1673 | ||
1674 | if (resolved_loc >= RESERVED_LOCATION_COUNT | |
1675 | && !LINEMAP_SYSP (map1)) | |
1676 | return loc; | |
1677 | ||
1678 | while (linemap_macro_expansion_map_p (map0) | |
1679 | && (resolved_loc < RESERVED_LOCATION_COUNT | |
1680 | || LINEMAP_SYSP (map1))) | |
1681 | { | |
1682 | loc = linemap_unwind_toward_expansion (set, loc, &map0); | |
1683 | resolved_loc = linemap_resolve_location (set, loc, | |
1684 | LRK_SPELLING_LOCATION, | |
1685 | &map1); | |
1686 | } | |
1687 | ||
1688 | if (map != NULL) | |
1689 | *map = map0; | |
1690 | return loc; | |
1691 | } | |
1692 | ||
46427374 | 1693 | /* Expand source code location LOC and return a user readable source |
84756fd4 DS |
1694 | code location. LOC must be a spelling (non-virtual) location. If |
1695 | it's a location < RESERVED_LOCATION_COUNT a zeroed expanded source | |
1696 | location is returned. */ | |
46427374 TT |
1697 | |
1698 | expanded_location | |
99b1c316 | 1699 | linemap_expand_location (line_maps *set, |
84756fd4 | 1700 | const struct line_map *map, |
620e594b | 1701 | location_t loc) |
46427374 TT |
1702 | |
1703 | { | |
1704 | expanded_location xloc; | |
1705 | ||
84756fd4 | 1706 | memset (&xloc, 0, sizeof (xloc)); |
5368224f DC |
1707 | if (IS_ADHOC_LOC (loc)) |
1708 | { | |
e6fc8353 ML |
1709 | xloc.data = get_data_from_adhoc_loc (set, loc); |
1710 | loc = get_location_from_adhoc_loc (set, loc); | |
5368224f | 1711 | } |
84756fd4 DS |
1712 | |
1713 | if (loc < RESERVED_LOCATION_COUNT) | |
1714 | /* The location for this token wasn't generated from a line map. | |
1715 | It was probably a location for a builtin token, chosen by some | |
1716 | client code. Let's not try to expand the location in that | |
1717 | case. */; | |
1718 | else if (map == NULL) | |
1719 | /* We shouldn't be getting a NULL map with a location that is not | |
1720 | reserved by the client code. */ | |
1721 | abort (); | |
1722 | else | |
1723 | { | |
1724 | /* MAP must be an ordinary map and LOC must be non-virtual, | |
1725 | encoded into this map, obviously; the accessors used on MAP | |
1726 | below ensure it is ordinary. Let's just assert the | |
1727 | non-virtualness of LOC here. */ | |
1728 | if (linemap_location_from_macro_expansion_p (set, loc)) | |
1729 | abort (); | |
46427374 | 1730 | |
0e50b624 DM |
1731 | const line_map_ordinary *ord_map = linemap_check_ordinary (map); |
1732 | ||
1733 | xloc.file = LINEMAP_FILE (ord_map); | |
1734 | xloc.line = SOURCE_LINE (ord_map, loc); | |
1735 | xloc.column = SOURCE_COLUMN (ord_map, loc); | |
1736 | xloc.sysp = LINEMAP_SYSP (ord_map) != 0; | |
84756fd4 | 1737 | } |
46427374 | 1738 | |
46427374 | 1739 | return xloc; |
5993019d | 1740 | } |
847e697a | 1741 | |
8dcf72a8 DN |
1742 | |
1743 | /* Dump line map at index IX in line table SET to STREAM. If STREAM | |
1744 | is NULL, use stderr. IS_MACRO is true if the caller wants to | |
1745 | dump a macro map, false otherwise. */ | |
1746 | ||
1747 | void | |
99b1c316 | 1748 | linemap_dump (FILE *stream, class line_maps *set, unsigned ix, bool is_macro) |
8dcf72a8 | 1749 | { |
42a98b43 | 1750 | const char *const lc_reasons_v[LC_HWM] |
8dcf72a8 DN |
1751 | = { "LC_ENTER", "LC_LEAVE", "LC_RENAME", "LC_RENAME_VERBATIM", |
1752 | "LC_ENTER_MACRO" }; | |
0e50b624 | 1753 | const line_map *map; |
42a98b43 | 1754 | unsigned reason; |
8dcf72a8 DN |
1755 | |
1756 | if (stream == NULL) | |
1757 | stream = stderr; | |
1758 | ||
1759 | if (!is_macro) | |
42a98b43 NS |
1760 | { |
1761 | map = LINEMAPS_ORDINARY_MAP_AT (set, ix); | |
1762 | reason = linemap_check_ordinary (map)->reason; | |
1763 | } | |
8dcf72a8 | 1764 | else |
42a98b43 NS |
1765 | { |
1766 | map = LINEMAPS_MACRO_MAP_AT (set, ix); | |
1767 | reason = LC_ENTER_MACRO; | |
1768 | } | |
8dcf72a8 DN |
1769 | |
1770 | fprintf (stream, "Map #%u [%p] - LOC: %u - REASON: %s - SYSP: %s\n", | |
42a98b43 NS |
1771 | ix, (void *) map, map->start_location, |
1772 | reason < LC_HWM ? lc_reasons_v[reason] : "???", | |
0e50b624 DM |
1773 | ((!is_macro |
1774 | && ORDINARY_MAP_IN_SYSTEM_HEADER_P (linemap_check_ordinary (map))) | |
1775 | ? "yes" : "no")); | |
8dcf72a8 DN |
1776 | if (!is_macro) |
1777 | { | |
0e50b624 | 1778 | const line_map_ordinary *ord_map = linemap_check_ordinary (map); |
f10a9135 NS |
1779 | const line_map_ordinary *includer_map |
1780 | = linemap_included_from_linemap (set, ord_map); | |
8dcf72a8 | 1781 | |
0e50b624 DM |
1782 | fprintf (stream, "File: %s:%d\n", ORDINARY_MAP_FILE_NAME (ord_map), |
1783 | ORDINARY_MAP_STARTING_LINE_NUMBER (ord_map)); | |
f10a9135 NS |
1784 | fprintf (stream, "Included from: [%d] %s\n", |
1785 | includer_map ? int (includer_map - set->info_ordinary.maps) : -1, | |
8dcf72a8 DN |
1786 | includer_map ? ORDINARY_MAP_FILE_NAME (includer_map) : "None"); |
1787 | } | |
1788 | else | |
0e50b624 DM |
1789 | { |
1790 | const line_map_macro *macro_map = linemap_check_macro (map); | |
1791 | fprintf (stream, "Macro: %s (%u tokens)\n", | |
1792 | linemap_map_get_macro_name (macro_map), | |
1793 | MACRO_MAP_NUM_MACRO_TOKENS (macro_map)); | |
1794 | } | |
8dcf72a8 DN |
1795 | |
1796 | fprintf (stream, "\n"); | |
1797 | } | |
1798 | ||
1799 | ||
847e697a TT |
1800 | /* Dump debugging information about source location LOC into the file |
1801 | stream STREAM. SET is the line map set LOC comes from. */ | |
1802 | ||
1803 | void | |
99b1c316 | 1804 | linemap_dump_location (line_maps *set, |
620e594b | 1805 | location_t loc, |
847e697a TT |
1806 | FILE *stream) |
1807 | { | |
0e50b624 | 1808 | const line_map_ordinary *map; |
620e594b | 1809 | location_t location; |
84756fd4 DS |
1810 | const char *path = "", *from = ""; |
1811 | int l = -1, c = -1, s = -1, e = -1; | |
847e697a | 1812 | |
5368224f | 1813 | if (IS_ADHOC_LOC (loc)) |
e6fc8353 | 1814 | loc = get_location_from_adhoc_loc (set, loc); |
5368224f | 1815 | |
847e697a TT |
1816 | if (loc == 0) |
1817 | return; | |
1818 | ||
1819 | location = | |
1820 | linemap_resolve_location (set, loc, LRK_MACRO_DEFINITION_LOCATION, &map); | |
847e697a | 1821 | |
84756fd4 DS |
1822 | if (map == NULL) |
1823 | /* Only reserved locations can be tolerated in this case. */ | |
1824 | linemap_assert (location < RESERVED_LOCATION_COUNT); | |
847e697a | 1825 | else |
84756fd4 DS |
1826 | { |
1827 | path = LINEMAP_FILE (map); | |
1828 | l = SOURCE_LINE (map, location); | |
1829 | c = SOURCE_COLUMN (map, location); | |
1830 | s = LINEMAP_SYSP (map) != 0; | |
1831 | e = location != loc; | |
1832 | if (e) | |
1833 | from = "N/A"; | |
1834 | else | |
f10a9135 NS |
1835 | { |
1836 | const line_map_ordinary *from_map | |
1837 | = linemap_included_from_linemap (set, map); | |
1838 | from = from_map ? LINEMAP_FILE (from_map) : "<NULL>"; | |
1839 | } | |
84756fd4 | 1840 | } |
847e697a TT |
1841 | |
1842 | /* P: path, L: line, C: column, S: in-system-header, M: map address, | |
84756fd4 DS |
1843 | E: macro expansion?, LOC: original location, R: resolved location */ |
1844 | fprintf (stream, "{P:%s;F:%s;L:%d;C:%d;S:%d;M:%p;E:%d,LOC:%d,R:%d}", | |
1845 | path, from, l, c, s, (void*)map, e, loc, location); | |
847e697a | 1846 | } |
64a1a422 | 1847 | |
7ecc3eb9 DS |
1848 | /* Return the highest location emitted for a given file for which |
1849 | there is a line map in SET. FILE_NAME is the file name to | |
1850 | consider. If the function returns TRUE, *LOC is set to the highest | |
1851 | location emitted for that file. */ | |
1852 | ||
1853 | bool | |
99b1c316 | 1854 | linemap_get_file_highest_location (line_maps *set, |
7ecc3eb9 | 1855 | const char *file_name, |
620e594b | 1856 | location_t *loc) |
7ecc3eb9 DS |
1857 | { |
1858 | /* If the set is empty or no ordinary map has been created then | |
1859 | there is no file to look for ... */ | |
1860 | if (set == NULL || set->info_ordinary.used == 0) | |
1861 | return false; | |
1862 | ||
1863 | /* Now look for the last ordinary map created for FILE_NAME. */ | |
1864 | int i; | |
1865 | for (i = set->info_ordinary.used - 1; i >= 0; --i) | |
1866 | { | |
0e50b624 | 1867 | const char *fname = set->info_ordinary.maps[i].to_file; |
7ecc3eb9 DS |
1868 | if (fname && !filename_cmp (fname, file_name)) |
1869 | break; | |
1870 | } | |
1871 | ||
1872 | if (i < 0) | |
1873 | return false; | |
1874 | ||
1875 | /* The highest location for a given map is either the starting | |
1876 | location of the next map minus one, or -- if the map is the | |
1877 | latest one -- the highest location of the set. */ | |
620e594b | 1878 | location_t result; |
7ecc3eb9 DS |
1879 | if (i == (int) set->info_ordinary.used - 1) |
1880 | result = set->highest_location; | |
1881 | else | |
1882 | result = set->info_ordinary.maps[i + 1].start_location - 1; | |
1883 | ||
1884 | *loc = result; | |
1885 | return true; | |
1886 | } | |
1887 | ||
64a1a422 TT |
1888 | /* Compute and return statistics about the memory consumption of some |
1889 | parts of the line table SET. */ | |
1890 | ||
1891 | void | |
99b1c316 | 1892 | linemap_get_statistics (line_maps *set, |
64a1a422 TT |
1893 | struct linemap_stats *s) |
1894 | { | |
d17687f6 | 1895 | long ordinary_maps_allocated_size, ordinary_maps_used_size, |
64a1a422 TT |
1896 | macro_maps_allocated_size, macro_maps_used_size, |
1897 | macro_maps_locations_size = 0, duplicated_macro_maps_locations_size = 0; | |
1898 | ||
0e50b624 | 1899 | const line_map_macro *cur_map; |
64a1a422 TT |
1900 | |
1901 | ordinary_maps_allocated_size = | |
0e50b624 | 1902 | LINEMAPS_ORDINARY_ALLOCATED (set) * sizeof (struct line_map_ordinary); |
64a1a422 TT |
1903 | |
1904 | ordinary_maps_used_size = | |
0e50b624 | 1905 | LINEMAPS_ORDINARY_USED (set) * sizeof (struct line_map_ordinary); |
64a1a422 TT |
1906 | |
1907 | macro_maps_allocated_size = | |
0e50b624 | 1908 | LINEMAPS_MACRO_ALLOCATED (set) * sizeof (struct line_map_macro); |
64a1a422 TT |
1909 | |
1910 | for (cur_map = LINEMAPS_MACRO_MAPS (set); | |
1911 | cur_map && cur_map <= LINEMAPS_LAST_MACRO_MAP (set); | |
1912 | ++cur_map) | |
1913 | { | |
1914 | unsigned i; | |
1915 | ||
1916 | linemap_assert (linemap_macro_expansion_map_p (cur_map)); | |
1917 | ||
1918 | macro_maps_locations_size += | |
620e594b | 1919 | 2 * MACRO_MAP_NUM_MACRO_TOKENS (cur_map) * sizeof (location_t); |
64a1a422 TT |
1920 | |
1921 | for (i = 0; i < 2 * MACRO_MAP_NUM_MACRO_TOKENS (cur_map); i += 2) | |
1922 | { | |
1923 | if (MACRO_MAP_LOCATIONS (cur_map)[i] == | |
1924 | MACRO_MAP_LOCATIONS (cur_map)[i + 1]) | |
1925 | duplicated_macro_maps_locations_size += | |
620e594b | 1926 | sizeof (location_t); |
64a1a422 TT |
1927 | } |
1928 | } | |
1929 | ||
1930 | macro_maps_used_size = | |
0e50b624 | 1931 | LINEMAPS_MACRO_USED (set) * sizeof (struct line_map_macro); |
64a1a422 TT |
1932 | |
1933 | s->num_ordinary_maps_allocated = LINEMAPS_ORDINARY_ALLOCATED (set); | |
1934 | s->num_ordinary_maps_used = LINEMAPS_ORDINARY_USED (set); | |
1935 | s->ordinary_maps_allocated_size = ordinary_maps_allocated_size; | |
1936 | s->ordinary_maps_used_size = ordinary_maps_used_size; | |
1937 | s->num_expanded_macros = num_expanded_macros_counter; | |
1938 | s->num_macro_tokens = num_macro_tokens_counter; | |
1939 | s->num_macro_maps_used = LINEMAPS_MACRO_USED (set); | |
1940 | s->macro_maps_allocated_size = macro_maps_allocated_size; | |
1941 | s->macro_maps_locations_size = macro_maps_locations_size; | |
1942 | s->macro_maps_used_size = macro_maps_used_size; | |
1943 | s->duplicated_macro_maps_locations_size = | |
1944 | duplicated_macro_maps_locations_size; | |
ee015909 DM |
1945 | s->adhoc_table_size = (set->location_adhoc_data_map.allocated |
1946 | * sizeof (struct location_adhoc_data)); | |
1947 | s->adhoc_table_entries_used = set->location_adhoc_data_map.curr_loc; | |
64a1a422 | 1948 | } |
8dcf72a8 DN |
1949 | |
1950 | ||
1951 | /* Dump line table SET to STREAM. If STREAM is NULL, stderr is used. | |
1952 | NUM_ORDINARY specifies how many ordinary maps to dump. NUM_MACRO | |
1953 | specifies how many macro maps to dump. */ | |
1954 | ||
1955 | void | |
99b1c316 | 1956 | line_table_dump (FILE *stream, class line_maps *set, unsigned int num_ordinary, |
8dcf72a8 DN |
1957 | unsigned int num_macro) |
1958 | { | |
1959 | unsigned int i; | |
1960 | ||
1961 | if (set == NULL) | |
1962 | return; | |
1963 | ||
1964 | if (stream == NULL) | |
1965 | stream = stderr; | |
1966 | ||
1967 | fprintf (stream, "# of ordinary maps: %d\n", LINEMAPS_ORDINARY_USED (set)); | |
1968 | fprintf (stream, "# of macro maps: %d\n", LINEMAPS_MACRO_USED (set)); | |
1969 | fprintf (stream, "Include stack depth: %d\n", set->depth); | |
1970 | fprintf (stream, "Highest location: %u\n", set->highest_location); | |
1971 | ||
1972 | if (num_ordinary) | |
1973 | { | |
1974 | fprintf (stream, "\nOrdinary line maps\n"); | |
1975 | for (i = 0; i < num_ordinary && i < LINEMAPS_ORDINARY_USED (set); i++) | |
1976 | linemap_dump (stream, set, i, false); | |
1977 | fprintf (stream, "\n"); | |
1978 | } | |
1979 | ||
1980 | if (num_macro) | |
1981 | { | |
1982 | fprintf (stream, "\nMacro line maps\n"); | |
1983 | for (i = 0; i < num_macro && i < LINEMAPS_MACRO_USED (set); i++) | |
1984 | linemap_dump (stream, set, i, true); | |
1985 | fprintf (stream, "\n"); | |
1986 | } | |
1987 | } | |
8a645150 DM |
1988 | |
1989 | /* class rich_location. */ | |
1990 | ||
1991 | /* Construct a rich_location with location LOC as its initial range. */ | |
1992 | ||
620e594b | 1993 | rich_location::rich_location (line_maps *set, location_t loc, |
96e6ae57 | 1994 | const range_label *label) : |
ee908516 | 1995 | m_line_table (set), |
b816477a | 1996 | m_ranges (), |
40499f81 | 1997 | m_column_override (0), |
a87a86e1 | 1998 | m_have_expanded_location (false), |
b816477a | 1999 | m_fixit_hints (), |
b09649fd DM |
2000 | m_seen_impossible_fixit (false), |
2001 | m_fixits_cannot_be_auto_applied (false) | |
8a645150 | 2002 | { |
85204e23 | 2003 | add_range (loc, SHOW_RANGE_WITH_CARET, label); |
8a645150 DM |
2004 | } |
2005 | ||
a87a86e1 DM |
2006 | /* The destructor for class rich_location. */ |
2007 | ||
2008 | rich_location::~rich_location () | |
2009 | { | |
b816477a DM |
2010 | for (unsigned int i = 0; i < m_fixit_hints.count (); i++) |
2011 | delete get_fixit_hint (i); | |
a87a86e1 DM |
2012 | } |
2013 | ||
40499f81 DM |
2014 | /* Get location IDX within this rich_location. */ |
2015 | ||
620e594b | 2016 | location_t |
40499f81 DM |
2017 | rich_location::get_loc (unsigned int idx) const |
2018 | { | |
b816477a DM |
2019 | const location_range *locrange = get_range (idx); |
2020 | return locrange->m_loc; | |
2021 | } | |
2022 | ||
2023 | /* Get range IDX within this rich_location. */ | |
2024 | ||
2025 | const location_range * | |
2026 | rich_location::get_range (unsigned int idx) const | |
2027 | { | |
2028 | return &m_ranges[idx]; | |
2029 | } | |
2030 | ||
2031 | /* Mutable access to range IDX within this rich_location. */ | |
2032 | ||
2033 | location_range * | |
2034 | rich_location::get_range (unsigned int idx) | |
2035 | { | |
2036 | return &m_ranges[idx]; | |
40499f81 DM |
2037 | } |
2038 | ||
2039 | /* Expand location IDX within this rich_location. */ | |
8a645150 DM |
2040 | /* Get an expanded_location for this rich_location's primary |
2041 | location. */ | |
2042 | ||
2043 | expanded_location | |
40499f81 | 2044 | rich_location::get_expanded_location (unsigned int idx) |
8a645150 | 2045 | { |
40499f81 DM |
2046 | if (idx == 0) |
2047 | { | |
2048 | /* Cache the expansion of the primary location. */ | |
2049 | if (!m_have_expanded_location) | |
2050 | { | |
2051 | m_expanded_location | |
c471c6ed DM |
2052 | = linemap_client_expand_location_to_spelling_point |
2053 | (get_loc (0), LOCATION_ASPECT_CARET); | |
40499f81 DM |
2054 | if (m_column_override) |
2055 | m_expanded_location.column = m_column_override; | |
2056 | m_have_expanded_location = true; | |
2057 | } | |
2058 | ||
2059 | return m_expanded_location; | |
2060 | } | |
2061 | else | |
c471c6ed DM |
2062 | return linemap_client_expand_location_to_spelling_point |
2063 | (get_loc (idx), LOCATION_ASPECT_CARET); | |
8a645150 DM |
2064 | } |
2065 | ||
40499f81 DM |
2066 | /* Set the column of the primary location, with 0 meaning |
2067 | "don't override it". */ | |
8a645150 DM |
2068 | |
2069 | void | |
2070 | rich_location::override_column (int column) | |
2071 | { | |
40499f81 DM |
2072 | m_column_override = column; |
2073 | m_have_expanded_location = false; | |
8a645150 DM |
2074 | } |
2075 | ||
2076 | /* Add the given range. */ | |
2077 | ||
2078 | void | |
620e594b | 2079 | rich_location::add_range (location_t loc, |
85204e23 | 2080 | enum range_display_kind range_display_kind, |
96e6ae57 | 2081 | const range_label *label) |
8a645150 | 2082 | { |
b816477a DM |
2083 | location_range range; |
2084 | range.m_loc = loc; | |
85204e23 | 2085 | range.m_range_display_kind = range_display_kind; |
96e6ae57 | 2086 | range.m_label = label; |
b816477a | 2087 | m_ranges.push (range); |
8a645150 DM |
2088 | } |
2089 | ||
f79520bb | 2090 | /* Add or overwrite the location given by IDX, setting its location to LOC, |
85204e23 | 2091 | and setting its m_range_display_kind to RANGE_DISPLAY_KIND. |
8a645150 | 2092 | |
f79520bb DM |
2093 | It must either overwrite an existing location, or add one *exactly* on |
2094 | the end of the array. | |
8a645150 | 2095 | |
f79520bb DM |
2096 | This is primarily for use by gcc when implementing diagnostic format |
2097 | decoders e.g. | |
2098 | - the "+" in the C/C++ frontends, for handling format codes like "%q+D" | |
2099 | (which writes the source location of a tree back into location 0 of | |
2100 | the rich_location), and | |
2101 | - the "%C" and "%L" format codes in the Fortran frontend. */ | |
8a645150 DM |
2102 | |
2103 | void | |
620e594b | 2104 | rich_location::set_range (unsigned int idx, location_t loc, |
85204e23 | 2105 | enum range_display_kind range_display_kind) |
8a645150 | 2106 | { |
8a645150 DM |
2107 | /* We can either overwrite an existing range, or add one exactly |
2108 | on the end of the array. */ | |
b816477a | 2109 | linemap_assert (idx <= m_ranges.count ()); |
8a645150 | 2110 | |
b816477a | 2111 | if (idx == m_ranges.count ()) |
85204e23 | 2112 | add_range (loc, range_display_kind); |
b816477a DM |
2113 | else |
2114 | { | |
2115 | location_range *locrange = get_range (idx); | |
2116 | locrange->m_loc = loc; | |
85204e23 | 2117 | locrange->m_range_display_kind = range_display_kind; |
b816477a | 2118 | } |
8a645150 | 2119 | |
f79520bb | 2120 | if (idx == 0) |
40499f81 DM |
2121 | /* Mark any cached value here as dirty. */ |
2122 | m_have_expanded_location = false; | |
8a645150 | 2123 | } |
a87a86e1 | 2124 | |
f9087798 DM |
2125 | /* Methods for adding insertion fix-it hints. */ |
2126 | ||
2127 | /* Add a fixit-hint, suggesting insertion of NEW_CONTENT | |
254830ba | 2128 | immediately before the primary range's start location. */ |
f9087798 DM |
2129 | |
2130 | void | |
254830ba | 2131 | rich_location::add_fixit_insert_before (const char *new_content) |
f9087798 | 2132 | { |
254830ba | 2133 | add_fixit_insert_before (get_loc (), new_content); |
f9087798 DM |
2134 | } |
2135 | ||
a87a86e1 | 2136 | /* Add a fixit-hint, suggesting insertion of NEW_CONTENT |
254830ba | 2137 | immediately before the start of WHERE. */ |
a87a86e1 DM |
2138 | |
2139 | void | |
620e594b | 2140 | rich_location::add_fixit_insert_before (location_t where, |
254830ba | 2141 | const char *new_content) |
a87a86e1 | 2142 | { |
620e594b | 2143 | location_t start = get_range_from_loc (m_line_table, where).m_start; |
338035aa | 2144 | maybe_add_fixit (start, start, new_content); |
254830ba DM |
2145 | } |
2146 | ||
2147 | /* Add a fixit-hint, suggesting insertion of NEW_CONTENT | |
2148 | immediately after the primary range's end-point. */ | |
2149 | ||
2150 | void | |
2151 | rich_location::add_fixit_insert_after (const char *new_content) | |
2152 | { | |
2153 | add_fixit_insert_after (get_loc (), new_content); | |
2154 | } | |
2155 | ||
2156 | /* Add a fixit-hint, suggesting insertion of NEW_CONTENT | |
2157 | immediately after the end-point of WHERE. */ | |
2158 | ||
2159 | void | |
620e594b | 2160 | rich_location::add_fixit_insert_after (location_t where, |
254830ba DM |
2161 | const char *new_content) |
2162 | { | |
620e594b DM |
2163 | location_t finish = get_range_from_loc (m_line_table, where).m_finish; |
2164 | location_t next_loc | |
254830ba DM |
2165 | = linemap_position_for_loc_and_offset (m_line_table, finish, 1); |
2166 | ||
2167 | /* linemap_position_for_loc_and_offset can fail, if so, it returns | |
2168 | its input value. */ | |
2169 | if (next_loc == finish) | |
2170 | { | |
2171 | stop_supporting_fixits (); | |
2172 | return; | |
2173 | } | |
2174 | ||
338035aa | 2175 | maybe_add_fixit (next_loc, next_loc, new_content); |
a87a86e1 DM |
2176 | } |
2177 | ||
f9087798 DM |
2178 | /* Methods for adding removal fix-it hints. */ |
2179 | ||
2180 | /* Add a fixit-hint, suggesting removal of the content covered | |
2181 | by range 0. */ | |
2182 | ||
2183 | void | |
2184 | rich_location::add_fixit_remove () | |
2185 | { | |
2186 | add_fixit_remove (get_loc ()); | |
2187 | } | |
2188 | ||
2189 | /* Add a fixit-hint, suggesting removal of the content between | |
2190 | the start and finish of WHERE. */ | |
2191 | ||
2192 | void | |
620e594b | 2193 | rich_location::add_fixit_remove (location_t where) |
f9087798 DM |
2194 | { |
2195 | source_range range = get_range_from_loc (m_line_table, where); | |
2196 | add_fixit_remove (range); | |
2197 | } | |
2198 | ||
a87a86e1 DM |
2199 | /* Add a fixit-hint, suggesting removal of the content at |
2200 | SRC_RANGE. */ | |
2201 | ||
2202 | void | |
2203 | rich_location::add_fixit_remove (source_range src_range) | |
2204 | { | |
2ffe0809 | 2205 | add_fixit_replace (src_range, ""); |
a87a86e1 DM |
2206 | } |
2207 | ||
f9087798 DM |
2208 | /* Add a fixit-hint, suggesting replacement of the content covered |
2209 | by range 0 with NEW_CONTENT. */ | |
2210 | ||
2211 | void | |
2212 | rich_location::add_fixit_replace (const char *new_content) | |
2213 | { | |
2214 | add_fixit_replace (get_loc (), new_content); | |
2215 | } | |
2216 | ||
2217 | /* Methods for adding "replace" fix-it hints. */ | |
2218 | ||
2219 | /* Add a fixit-hint, suggesting replacement of the content between | |
2220 | the start and finish of WHERE with NEW_CONTENT. */ | |
2221 | ||
2222 | void | |
620e594b | 2223 | rich_location::add_fixit_replace (location_t where, |
f9087798 DM |
2224 | const char *new_content) |
2225 | { | |
2226 | source_range range = get_range_from_loc (m_line_table, where); | |
2227 | add_fixit_replace (range, new_content); | |
2228 | } | |
2229 | ||
a87a86e1 DM |
2230 | /* Add a fixit-hint, suggesting replacement of the content at |
2231 | SRC_RANGE with NEW_CONTENT. */ | |
2232 | ||
2233 | void | |
2234 | rich_location::add_fixit_replace (source_range src_range, | |
2235 | const char *new_content) | |
2236 | { | |
620e594b DM |
2237 | location_t start = get_pure_location (m_line_table, src_range.m_start); |
2238 | location_t finish = get_pure_location (m_line_table, src_range.m_finish); | |
ee908516 | 2239 | |
338035aa | 2240 | /* Fix-it hints use half-closed ranges, so attempt to offset the endpoint. */ |
620e594b | 2241 | location_t next_loc |
338035aa DM |
2242 | = linemap_position_for_loc_and_offset (m_line_table, finish, 1); |
2243 | /* linemap_position_for_loc_and_offset can fail, if so, it returns | |
2244 | its input value. */ | |
2245 | if (next_loc == finish) | |
31316208 DM |
2246 | { |
2247 | stop_supporting_fixits (); | |
2248 | return; | |
2249 | } | |
338035aa | 2250 | finish = next_loc; |
31316208 | 2251 | |
338035aa | 2252 | maybe_add_fixit (start, finish, new_content); |
a87a86e1 DM |
2253 | } |
2254 | ||
ee908516 DM |
2255 | /* Get the last fix-it hint within this rich_location, or NULL if none. */ |
2256 | ||
2257 | fixit_hint * | |
2258 | rich_location::get_last_fixit_hint () const | |
2259 | { | |
b816477a DM |
2260 | if (m_fixit_hints.count () > 0) |
2261 | return get_fixit_hint (m_fixit_hints.count () - 1); | |
ee908516 DM |
2262 | else |
2263 | return NULL; | |
2264 | } | |
2265 | ||
2266 | /* If WHERE is an "awkward" location, then mark this rich_location as not | |
2267 | supporting fixits, purging any thay were already added, and return true. | |
2268 | ||
2269 | Otherwise (the common case), return false. */ | |
2270 | ||
2271 | bool | |
620e594b | 2272 | rich_location::reject_impossible_fixit (location_t where) |
ee908516 DM |
2273 | { |
2274 | /* Fix-its within a rich_location should either all be suggested, or | |
2275 | none of them should be suggested. | |
2276 | Once we've rejected a fixit, we reject any more, even those | |
2277 | with reasonable locations. */ | |
2278 | if (m_seen_impossible_fixit) | |
2279 | return true; | |
2280 | ||
2281 | if (where <= LINE_MAP_MAX_LOCATION_WITH_COLS) | |
2282 | /* WHERE is a reasonable location for a fix-it; don't reject it. */ | |
2283 | return false; | |
2284 | ||
2285 | /* Otherwise we have an attempt to add a fix-it with an "awkward" | |
2286 | location: either one that we can't obtain column information | |
2287 | for (within an ordinary map), or one within a macro expansion. */ | |
254830ba DM |
2288 | stop_supporting_fixits (); |
2289 | return true; | |
2290 | } | |
2291 | ||
2292 | /* Mark this rich_location as not supporting fixits, purging any that were | |
2293 | already added. */ | |
2294 | ||
2295 | void | |
2296 | rich_location::stop_supporting_fixits () | |
2297 | { | |
ee908516 DM |
2298 | m_seen_impossible_fixit = true; |
2299 | ||
2300 | /* Purge the rich_location of any fix-its that were already added. */ | |
b816477a DM |
2301 | for (unsigned int i = 0; i < m_fixit_hints.count (); i++) |
2302 | delete get_fixit_hint (i); | |
2303 | m_fixit_hints.truncate (0); | |
ee908516 DM |
2304 | } |
2305 | ||
338035aa DM |
2306 | /* Add HINT to the fix-it hints in this rich_location, |
2307 | consolidating into the prior fixit if possible. */ | |
b816477a DM |
2308 | |
2309 | void | |
620e594b DM |
2310 | rich_location::maybe_add_fixit (location_t start, |
2311 | location_t next_loc, | |
338035aa | 2312 | const char *new_content) |
b816477a | 2313 | { |
338035aa DM |
2314 | if (reject_impossible_fixit (start)) |
2315 | return; | |
2316 | if (reject_impossible_fixit (next_loc)) | |
2317 | return; | |
a87a86e1 | 2318 | |
c7a980b8 DM |
2319 | /* Only allow fix-it hints that affect a single line in one file. |
2320 | Compare the end-points. */ | |
2321 | expanded_location exploc_start | |
c471c6ed DM |
2322 | = linemap_client_expand_location_to_spelling_point (start, |
2323 | LOCATION_ASPECT_START); | |
c7a980b8 | 2324 | expanded_location exploc_next_loc |
c471c6ed DM |
2325 | = linemap_client_expand_location_to_spelling_point (next_loc, |
2326 | LOCATION_ASPECT_START); | |
c7a980b8 DM |
2327 | /* They must be within the same file... */ |
2328 | if (exploc_start.file != exploc_next_loc.file) | |
2329 | { | |
2330 | stop_supporting_fixits (); | |
2331 | return; | |
2332 | } | |
2333 | /* ...and on the same line. */ | |
2334 | if (exploc_start.line != exploc_next_loc.line) | |
2335 | { | |
2336 | stop_supporting_fixits (); | |
2337 | return; | |
2338 | } | |
6df8934f DM |
2339 | /* The columns must be in the correct order. This can fail if the |
2340 | endpoints straddle the boundary for which the linemap can represent | |
2341 | columns (PR c/82050). */ | |
2342 | if (exploc_start.column > exploc_next_loc.column) | |
2343 | { | |
2344 | stop_supporting_fixits (); | |
2345 | return; | |
2346 | } | |
c7a980b8 | 2347 | |
ad53f123 DM |
2348 | const char *newline = strchr (new_content, '\n'); |
2349 | if (newline) | |
338035aa | 2350 | { |
ad53f123 DM |
2351 | /* For now, we can only support insertion of whole lines |
2352 | i.e. starts at start of line, and the newline is at the end of | |
2353 | the insertion point. */ | |
2354 | ||
2355 | /* It must be an insertion, not a replacement/deletion. */ | |
2356 | if (start != next_loc) | |
2357 | { | |
2358 | stop_supporting_fixits (); | |
2359 | return; | |
2360 | } | |
2361 | ||
2362 | /* The insertion must be at the start of a line. */ | |
ad53f123 DM |
2363 | if (exploc_start.column != 1) |
2364 | { | |
2365 | stop_supporting_fixits (); | |
2366 | return; | |
2367 | } | |
2368 | ||
2369 | /* The newline must be at end of NEW_CONTENT. | |
2370 | We could eventually split up fix-its at newlines if we wanted | |
2371 | to allow more generality (e.g. to allow adding multiple lines | |
2372 | with one add_fixit call. */ | |
2373 | if (newline[1] != '\0') | |
2374 | { | |
2375 | stop_supporting_fixits (); | |
2376 | return; | |
2377 | } | |
338035aa | 2378 | } |
a87a86e1 | 2379 | |
ad53f123 DM |
2380 | /* Consolidate neighboring fixits. |
2381 | Don't consolidate into newline-insertion fixits. */ | |
338035aa | 2382 | fixit_hint *prev = get_last_fixit_hint (); |
ad53f123 | 2383 | if (prev && !prev->ends_with_newline_p ()) |
338035aa DM |
2384 | if (prev->maybe_append (start, next_loc, new_content)) |
2385 | return; | |
ee908516 | 2386 | |
338035aa | 2387 | m_fixit_hints.push (new fixit_hint (start, next_loc, new_content)); |
ee908516 DM |
2388 | } |
2389 | ||
338035aa | 2390 | /* class fixit_hint. */ |
a87a86e1 | 2391 | |
620e594b DM |
2392 | fixit_hint::fixit_hint (location_t start, |
2393 | location_t next_loc, | |
338035aa DM |
2394 | const char *new_content) |
2395 | : m_start (start), | |
2396 | m_next_loc (next_loc), | |
a87a86e1 DM |
2397 | m_bytes (xstrdup (new_content)), |
2398 | m_len (strlen (new_content)) | |
2399 | { | |
2400 | } | |
2401 | ||
338035aa | 2402 | /* Does this fix-it hint affect the given line? */ |
a87a86e1 DM |
2403 | |
2404 | bool | |
338035aa | 2405 | fixit_hint::affects_line_p (const char *file, int line) const |
a87a86e1 | 2406 | { |
338035aa | 2407 | expanded_location exploc_start |
c471c6ed DM |
2408 | = linemap_client_expand_location_to_spelling_point (m_start, |
2409 | LOCATION_ASPECT_START); | |
338035aa DM |
2410 | if (file != exploc_start.file) |
2411 | return false; | |
2412 | if (line < exploc_start.line) | |
2413 | return false; | |
2414 | expanded_location exploc_next_loc | |
c471c6ed DM |
2415 | = linemap_client_expand_location_to_spelling_point (m_next_loc, |
2416 | LOCATION_ASPECT_START); | |
338035aa DM |
2417 | if (file != exploc_next_loc.file) |
2418 | return false; | |
2419 | if (line > exploc_next_loc.line) | |
2420 | return false; | |
2421 | return true; | |
a87a86e1 | 2422 | } |
ee908516 | 2423 | |
338035aa DM |
2424 | /* Method for consolidating fix-it hints, for use by |
2425 | rich_location::maybe_add_fixit. | |
2426 | If possible, merge a pending fix-it hint with the given params | |
2427 | into this one and return true. | |
ee908516 DM |
2428 | Otherwise return false. */ |
2429 | ||
2430 | bool | |
620e594b DM |
2431 | fixit_hint::maybe_append (location_t start, |
2432 | location_t next_loc, | |
338035aa | 2433 | const char *new_content) |
ee908516 | 2434 | { |
338035aa DM |
2435 | /* For consolidation to be possible, START must be at this hint's |
2436 | m_next_loc. */ | |
2437 | if (start != m_next_loc) | |
ee908516 DM |
2438 | return false; |
2439 | ||
338035aa DM |
2440 | /* If so, we have neighboring replacements; merge them. */ |
2441 | m_next_loc = next_loc; | |
ee908516 DM |
2442 | size_t extra_len = strlen (new_content); |
2443 | m_bytes = (char *)xrealloc (m_bytes, m_len + extra_len + 1); | |
2444 | memcpy (m_bytes + m_len, new_content, extra_len); | |
2445 | m_len += extra_len; | |
2446 | m_bytes[m_len] = '\0'; | |
2447 | return true; | |
2448 | } | |
ad53f123 DM |
2449 | |
2450 | /* Return true iff this hint's content ends with a newline. */ | |
2451 | ||
2452 | bool | |
2453 | fixit_hint::ends_with_newline_p () const | |
2454 | { | |
2455 | if (m_len == 0) | |
2456 | return false; | |
2457 | return m_bytes[m_len - 1] == '\n'; | |
2458 | } |