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78536ab7 | 1 | /* Map (unsigned int) keys to (source file, line, column) triples. |
d353bf18 | 2 | Copyright (C) 2001-2015 Free Software Foundation, Inc. |
38692459 | 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 | |
6bc9506f | 6 | Free Software Foundation; either version 3, or (at your option) any |
38692459 | 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 | |
6bc9506f | 15 | along with this program; see the file COPYING3. If not see |
16 | <http://www.gnu.org/licenses/>. | |
38692459 | 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" | |
97bfb9ef | 25 | #include "cpplib.h" |
26 | #include "internal.h" | |
5169661d | 27 | #include "hashtab.h" |
38692459 | 28 | |
0d344d27 | 29 | /* Do not track column numbers higher than this one. As a result, the |
30 | range of column_bits is [7, 18] (or 0 if column numbers are | |
31 | disabled). */ | |
32 | const unsigned int LINE_MAP_MAX_COLUMN_NUMBER = (1U << 17); | |
33 | ||
34 | /* Do not track column numbers if locations get higher than this. */ | |
35 | const source_location LINE_MAP_MAX_LOCATION_WITH_COLS = 0x60000000; | |
36 | ||
37 | /* Highest possible source location encoded within an ordinary or | |
38 | macro map. */ | |
39 | const source_location LINE_MAP_MAX_SOURCE_LOCATION = 0x70000000; | |
40 | ||
551e34da | 41 | static void trace_include (const struct line_maps *, const line_map_ordinary *); |
42 | static const line_map_ordinary * linemap_ordinary_map_lookup (struct line_maps *, | |
43 | source_location); | |
44 | static const line_map_macro* linemap_macro_map_lookup (struct line_maps *, | |
45 | source_location); | |
97bfb9ef | 46 | static source_location linemap_macro_map_loc_to_def_point |
551e34da | 47 | (const line_map_macro *, source_location); |
97bfb9ef | 48 | static source_location linemap_macro_map_loc_unwind_toward_spelling |
551e34da | 49 | (const line_map_macro *, source_location); |
97bfb9ef | 50 | static source_location linemap_macro_map_loc_to_exp_point |
551e34da | 51 | (const line_map_macro *, source_location); |
97bfb9ef | 52 | static source_location linemap_macro_loc_to_spelling_point |
551e34da | 53 | (struct line_maps *, source_location, const line_map_ordinary **); |
97bfb9ef | 54 | static source_location linemap_macro_loc_to_def_point (struct line_maps *, |
55 | source_location, | |
551e34da | 56 | const line_map_ordinary **); |
97bfb9ef | 57 | static source_location linemap_macro_loc_to_exp_point (struct line_maps *, |
58 | source_location, | |
551e34da | 59 | const line_map_ordinary **); |
438ac94c | 60 | |
e77b8253 | 61 | /* Counters defined in macro.c. */ |
62 | extern unsigned num_expanded_macros_counter; | |
63 | extern unsigned num_macro_tokens_counter; | |
64 | ||
5169661d | 65 | /* Hash function for location_adhoc_data hashtable. */ |
66 | ||
67 | static hashval_t | |
68 | location_adhoc_data_hash (const void *l) | |
69 | { | |
70 | const struct location_adhoc_data *lb = | |
71 | (const struct location_adhoc_data *) l; | |
bda16c7c | 72 | return (hashval_t) lb->locus + (size_t) lb->data; |
5169661d | 73 | } |
74 | ||
75 | /* Compare function for location_adhoc_data hashtable. */ | |
76 | ||
77 | static int | |
78 | location_adhoc_data_eq (const void *l1, const void *l2) | |
79 | { | |
80 | const struct location_adhoc_data *lb1 = | |
81 | (const struct location_adhoc_data *) l1; | |
82 | const struct location_adhoc_data *lb2 = | |
83 | (const struct location_adhoc_data *) l2; | |
84 | return lb1->locus == lb2->locus && lb1->data == lb2->data; | |
85 | } | |
86 | ||
87 | /* Update the hashtable when location_adhoc_data is reallocated. */ | |
88 | ||
89 | static int | |
90 | location_adhoc_data_update (void **slot, void *data) | |
91 | { | |
92 | *((char **) slot) += *((long long *) data); | |
93 | return 1; | |
94 | } | |
95 | ||
5c1946c8 | 96 | /* Rebuild the hash table from the location adhoc data. */ |
97 | ||
98 | void | |
99 | rebuild_location_adhoc_htab (struct line_maps *set) | |
100 | { | |
101 | unsigned i; | |
102 | set->location_adhoc_data_map.htab = | |
103 | htab_create (100, location_adhoc_data_hash, location_adhoc_data_eq, NULL); | |
104 | for (i = 0; i < set->location_adhoc_data_map.curr_loc; i++) | |
105 | htab_find_slot (set->location_adhoc_data_map.htab, | |
106 | set->location_adhoc_data_map.data + i, INSERT); | |
107 | } | |
108 | ||
5169661d | 109 | /* Combine LOCUS and DATA to a combined adhoc loc. */ |
110 | ||
111 | source_location | |
112 | get_combined_adhoc_loc (struct line_maps *set, | |
113 | source_location locus, void *data) | |
114 | { | |
115 | struct location_adhoc_data lb; | |
116 | struct location_adhoc_data **slot; | |
117 | ||
118 | linemap_assert (data); | |
119 | ||
120 | if (IS_ADHOC_LOC (locus)) | |
6e5a7913 | 121 | locus |
122 | = set->location_adhoc_data_map.data[locus & MAX_SOURCE_LOCATION].locus; | |
5169661d | 123 | if (locus == 0 && data == NULL) |
124 | return 0; | |
125 | lb.locus = locus; | |
126 | lb.data = data; | |
127 | slot = (struct location_adhoc_data **) | |
128 | htab_find_slot (set->location_adhoc_data_map.htab, &lb, INSERT); | |
129 | if (*slot == NULL) | |
130 | { | |
131 | if (set->location_adhoc_data_map.curr_loc >= | |
132 | set->location_adhoc_data_map.allocated) | |
133 | { | |
134 | char *orig_data = (char *) set->location_adhoc_data_map.data; | |
135 | long long offset; | |
de2e6b8a | 136 | /* Cast away extern "C" from the type of xrealloc. */ |
137 | line_map_realloc reallocator = (set->reallocator | |
138 | ? set->reallocator | |
139 | : (line_map_realloc) xrealloc); | |
5c1946c8 | 140 | |
141 | if (set->location_adhoc_data_map.allocated == 0) | |
142 | set->location_adhoc_data_map.allocated = 128; | |
143 | else | |
144 | set->location_adhoc_data_map.allocated *= 2; | |
145 | set->location_adhoc_data_map.data = (struct location_adhoc_data *) | |
146 | reallocator (set->location_adhoc_data_map.data, | |
147 | set->location_adhoc_data_map.allocated | |
148 | * sizeof (struct location_adhoc_data)); | |
5169661d | 149 | offset = (char *) (set->location_adhoc_data_map.data) - orig_data; |
5c1946c8 | 150 | if (set->location_adhoc_data_map.allocated > 128) |
151 | htab_traverse (set->location_adhoc_data_map.htab, | |
152 | location_adhoc_data_update, &offset); | |
5169661d | 153 | } |
154 | *slot = set->location_adhoc_data_map.data | |
155 | + set->location_adhoc_data_map.curr_loc; | |
6e5a7913 | 156 | set->location_adhoc_data_map.data[set->location_adhoc_data_map.curr_loc++] |
157 | = lb; | |
5169661d | 158 | } |
159 | return ((*slot) - set->location_adhoc_data_map.data) | 0x80000000; | |
160 | } | |
161 | ||
162 | /* Return the data for the adhoc loc. */ | |
163 | ||
164 | void * | |
165 | get_data_from_adhoc_loc (struct line_maps *set, source_location loc) | |
166 | { | |
167 | linemap_assert (IS_ADHOC_LOC (loc)); | |
168 | return set->location_adhoc_data_map.data[loc & MAX_SOURCE_LOCATION].data; | |
169 | } | |
170 | ||
171 | /* Return the location for the adhoc loc. */ | |
172 | ||
173 | source_location | |
174 | get_location_from_adhoc_loc (struct line_maps *set, source_location loc) | |
175 | { | |
176 | linemap_assert (IS_ADHOC_LOC (loc)); | |
177 | return set->location_adhoc_data_map.data[loc & MAX_SOURCE_LOCATION].locus; | |
178 | } | |
179 | ||
5169661d | 180 | /* Finalize the location_adhoc_data structure. */ |
181 | void | |
182 | location_adhoc_data_fini (struct line_maps *set) | |
183 | { | |
5169661d | 184 | htab_delete (set->location_adhoc_data_map.htab); |
185 | } | |
186 | ||
38692459 | 187 | /* Initialize a line map set. */ |
188 | ||
189 | void | |
a4cfdfed | 190 | linemap_init (struct line_maps *set, |
191 | source_location builtin_location) | |
38692459 | 192 | { |
97bfb9ef | 193 | memset (set, 0, sizeof (struct line_maps)); |
af4d2883 | 194 | set->highest_location = RESERVED_LOCATION_COUNT - 1; |
195 | set->highest_line = RESERVED_LOCATION_COUNT - 1; | |
5c1946c8 | 196 | set->location_adhoc_data_map.htab = |
197 | htab_create (100, location_adhoc_data_hash, location_adhoc_data_eq, NULL); | |
a4cfdfed | 198 | set->builtin_location = builtin_location; |
38692459 | 199 | } |
200 | ||
7c2df241 | 201 | /* Check for and warn about line_maps entered but not exited. */ |
610625e3 | 202 | |
203 | void | |
204 | linemap_check_files_exited (struct line_maps *set) | |
205 | { | |
551e34da | 206 | const line_map_ordinary *map; |
610625e3 | 207 | /* Depending upon whether we are handling preprocessed input or |
208 | not, this can be a user error or an ICE. */ | |
97bfb9ef | 209 | for (map = LINEMAPS_LAST_ORDINARY_MAP (set); |
210 | ! MAIN_FILE_P (map); | |
610625e3 | 211 | map = INCLUDED_FROM (set, map)) |
212 | fprintf (stderr, "line-map.c: file \"%s\" entered but not left\n", | |
97bfb9ef | 213 | ORDINARY_MAP_FILE_NAME (map)); |
610625e3 | 214 | } |
38692459 | 215 | |
97bfb9ef | 216 | /* Create a new line map in the line map set SET, and return it. |
217 | REASON is the reason of creating the map. It determines the type | |
218 | of map created (ordinary or macro map). Note that ordinary maps and | |
219 | macro maps are allocated in different memory location. */ | |
220 | ||
221 | static struct line_map * | |
222 | new_linemap (struct line_maps *set, | |
223 | enum lc_reason reason) | |
38692459 | 224 | { |
97bfb9ef | 225 | /* Depending on this variable, a macro map would be allocated in a |
226 | different memory location than an ordinary map. */ | |
227 | bool macro_map_p = (reason == LC_ENTER_MACRO); | |
228 | struct line_map *result; | |
229 | ||
230 | if (LINEMAPS_USED (set, macro_map_p) == LINEMAPS_ALLOCATED (set, macro_map_p)) | |
bd507c05 | 231 | { |
97bfb9ef | 232 | /* We ran out of allocated line maps. Let's allocate more. */ |
1ae3520e | 233 | unsigned alloc_size; |
f85fcf2b | 234 | |
de2e6b8a | 235 | /* Cast away extern "C" from the type of xrealloc. */ |
236 | line_map_realloc reallocator = (set->reallocator | |
237 | ? set->reallocator | |
238 | : (line_map_realloc) xrealloc); | |
1ae3520e | 239 | line_map_round_alloc_size_func round_alloc_size = |
240 | set->round_alloc_size; | |
241 | ||
551e34da | 242 | size_t map_size = (macro_map_p |
243 | ? sizeof (line_map_macro) | |
244 | : sizeof (line_map_ordinary)); | |
245 | ||
1ae3520e | 246 | /* We are going to execute some dance to try to reduce the |
247 | overhead of the memory allocator, in case we are using the | |
248 | ggc-page.c one. | |
249 | ||
250 | The actual size of memory we are going to get back from the | |
251 | allocator is the smallest power of 2 that is greater than the | |
252 | size we requested. So let's consider that size then. */ | |
253 | ||
254 | alloc_size = | |
255 | (2 * LINEMAPS_ALLOCATED (set, macro_map_p) + 256) | |
551e34da | 256 | * map_size; |
1ae3520e | 257 | |
258 | /* Get the actual size of memory that is going to be allocated | |
259 | by the allocator. */ | |
260 | alloc_size = round_alloc_size (alloc_size); | |
261 | ||
262 | /* Now alloc_size contains the exact memory size we would get if | |
263 | we have asked for the initial alloc_size amount of memory. | |
264 | Let's get back to the number of macro map that amounts | |
265 | to. */ | |
97bfb9ef | 266 | LINEMAPS_ALLOCATED (set, macro_map_p) = |
551e34da | 267 | alloc_size / map_size; |
1ae3520e | 268 | |
269 | /* And now let's really do the re-allocation. */ | |
551e34da | 270 | if (macro_map_p) |
271 | { | |
272 | set->info_macro.maps | |
273 | = (line_map_macro *) (*reallocator) (set->info_macro.maps, | |
274 | (LINEMAPS_ALLOCATED (set, macro_map_p) | |
275 | * map_size)); | |
276 | result = &set->info_macro.maps[LINEMAPS_USED (set, macro_map_p)]; | |
277 | } | |
278 | else | |
279 | { | |
280 | set->info_ordinary.maps = | |
281 | (line_map_ordinary *) (*reallocator) (set->info_ordinary.maps, | |
282 | (LINEMAPS_ALLOCATED (set, macro_map_p) | |
283 | * map_size)); | |
284 | result = &set->info_ordinary.maps[LINEMAPS_USED (set, macro_map_p)]; | |
285 | } | |
97bfb9ef | 286 | memset (result, 0, |
287 | ((LINEMAPS_ALLOCATED (set, macro_map_p) | |
288 | - LINEMAPS_USED (set, macro_map_p)) | |
551e34da | 289 | * map_size)); |
bd507c05 | 290 | } |
97bfb9ef | 291 | else |
551e34da | 292 | { |
293 | if (macro_map_p) | |
294 | result = &set->info_macro.maps[LINEMAPS_USED (set, macro_map_p)]; | |
295 | else | |
296 | result = &set->info_ordinary.maps[LINEMAPS_USED (set, macro_map_p)]; | |
297 | } | |
97bfb9ef | 298 | |
299 | LINEMAPS_USED (set, macro_map_p)++; | |
300 | ||
301 | result->reason = reason; | |
302 | return result; | |
38692459 | 303 | } |
304 | ||
305 | /* Add a mapping of logical source line to physical source file and | |
748b50a3 | 306 | line number. |
307 | ||
308 | The text pointed to by TO_FILE must have a lifetime | |
309 | at least as long as the final call to lookup_line (). An empty | |
310 | TO_FILE means standard input. If reason is LC_LEAVE, and | |
311 | TO_FILE is NULL, then TO_FILE, TO_LINE and SYSP are given their | |
312 | natural values considering the file we are returning to. | |
38692459 | 313 | |
314 | FROM_LINE should be monotonic increasing across calls to this | |
748b50a3 | 315 | function. A call to this function can relocate the previous set of |
316 | maps, so any stored line_map pointers should not be used. */ | |
38692459 | 317 | |
f85fcf2b | 318 | const struct line_map * |
196ce2be | 319 | linemap_add (struct line_maps *set, enum lc_reason reason, |
4999c35b | 320 | unsigned int sysp, const char *to_file, linenum_type to_line) |
38692459 | 321 | { |
610625e3 | 322 | source_location start_location = set->highest_location + 1; |
38692459 | 323 | |
97bfb9ef | 324 | linemap_assert (!(LINEMAPS_ORDINARY_USED (set) |
325 | && (start_location | |
326 | < MAP_START_LOCATION (LINEMAPS_LAST_ORDINARY_MAP (set))))); | |
327 | ||
328 | /* When we enter the file for the first time reason cannot be | |
329 | LC_RENAME. */ | |
330 | linemap_assert (!(set->depth == 0 && reason == LC_RENAME)); | |
38692459 | 331 | |
97bfb9ef | 332 | /* If we are leaving the main file, return a NULL map. */ |
333 | if (reason == LC_LEAVE | |
334 | && MAIN_FILE_P (LINEMAPS_LAST_ORDINARY_MAP (set)) | |
335 | && to_file == NULL) | |
38692459 | 336 | { |
97bfb9ef | 337 | set->depth--; |
338 | return NULL; | |
38692459 | 339 | } |
340 | ||
551e34da | 341 | linemap_assert (reason != LC_ENTER_MACRO); |
342 | line_map_ordinary *map = linemap_check_ordinary (new_linemap (set, reason)); | |
38692459 | 343 | |
1eecdb28 | 344 | if (to_file && *to_file == '\0' && reason != LC_RENAME_VERBATIM) |
748b50a3 | 345 | to_file = "<stdin>"; |
346 | ||
1eecdb28 | 347 | if (reason == LC_RENAME_VERBATIM) |
348 | reason = LC_RENAME; | |
349 | ||
1dc92c59 | 350 | if (reason == LC_LEAVE) |
bd507c05 | 351 | { |
97bfb9ef | 352 | /* When we are just leaving an "included" file, and jump to the next |
353 | location inside the "includer" right after the #include | |
354 | "included", this variable points the map in use right before the | |
355 | #include "included", inside the same "includer" file. */ | |
551e34da | 356 | line_map_ordinary *from; |
f85fcf2b | 357 | bool error; |
358 | ||
359 | if (MAIN_FILE_P (map - 1)) | |
bd507c05 | 360 | { |
351855a5 | 361 | /* So this _should_ mean we are leaving the main file -- |
97bfb9ef | 362 | effectively ending the compilation unit. But to_file not |
363 | being NULL means the caller thinks we are leaving to | |
364 | another file. This is an erroneous behaviour but we'll | |
365 | try to recover from it. Let's pretend we are not leaving | |
366 | the main file. */ | |
4d1574ae | 367 | error = true; |
368 | reason = LC_RENAME; | |
369 | from = map - 1; | |
f85fcf2b | 370 | } |
371 | else | |
372 | { | |
97bfb9ef | 373 | /* (MAP - 1) points to the map we are leaving. The |
374 | map from which (MAP - 1) got included should be the map | |
375 | that comes right before MAP in the same file. */ | |
f85fcf2b | 376 | from = INCLUDED_FROM (set, map - 1); |
97bfb9ef | 377 | error = to_file && filename_cmp (ORDINARY_MAP_FILE_NAME (from), |
378 | to_file); | |
f85fcf2b | 379 | } |
380 | ||
381 | /* Depending upon whether we are handling preprocessed input or | |
382 | not, this can be a user error or an ICE. */ | |
383 | if (error) | |
384 | fprintf (stderr, "line-map.c: file \"%s\" left but not entered\n", | |
385 | to_file); | |
386 | ||
387 | /* A TO_FILE of NULL is special - we use the natural values. */ | |
388 | if (error || to_file == NULL) | |
389 | { | |
97bfb9ef | 390 | to_file = ORDINARY_MAP_FILE_NAME (from); |
610625e3 | 391 | to_line = SOURCE_LINE (from, from[1].start_location); |
97bfb9ef | 392 | sysp = ORDINARY_MAP_IN_SYSTEM_HEADER_P (from); |
bd507c05 | 393 | } |
394 | } | |
395 | ||
3ce1a212 | 396 | map->sysp = sysp; |
397 | map->start_location = start_location; | |
398 | map->to_file = to_file; | |
399 | map->to_line = to_line; | |
97bfb9ef | 400 | LINEMAPS_ORDINARY_CACHE (set) = LINEMAPS_ORDINARY_USED (set) - 1; |
3ce1a212 | 401 | map->column_bits = 0; |
610625e3 | 402 | set->highest_location = start_location; |
dbddc569 | 403 | set->highest_line = start_location; |
610625e3 | 404 | set->max_column_hint = 0; |
f85fcf2b | 405 | |
bd507c05 | 406 | if (reason == LC_ENTER) |
4087823d | 407 | { |
3ce1a212 | 408 | map->included_from = |
97bfb9ef | 409 | set->depth == 0 ? -1 : (int) (LINEMAPS_ORDINARY_USED (set) - 2); |
4087823d | 410 | set->depth++; |
4087823d | 411 | if (set->trace_includes) |
412 | trace_include (set, map); | |
413 | } | |
38692459 | 414 | else if (reason == LC_RENAME) |
3ce1a212 | 415 | map->included_from = ORDINARY_MAP_INCLUDER_FILE_INDEX (&map[-1]); |
38692459 | 416 | else if (reason == LC_LEAVE) |
4087823d | 417 | { |
418 | set->depth--; | |
3ce1a212 | 419 | map->included_from = |
97bfb9ef | 420 | ORDINARY_MAP_INCLUDER_FILE_INDEX (INCLUDED_FROM (set, map - 1)); |
4087823d | 421 | } |
438ac94c | 422 | |
38692459 | 423 | return map; |
424 | } | |
425 | ||
e8aa7eaf | 426 | /* Returns TRUE if the line table set tracks token locations across |
97bfb9ef | 427 | macro expansion, FALSE otherwise. */ |
428 | ||
429 | bool | |
430 | linemap_tracks_macro_expansion_locs_p (struct line_maps *set) | |
431 | { | |
432 | return LINEMAPS_MACRO_MAPS (set) != NULL; | |
433 | } | |
434 | ||
435 | /* Create a macro map. A macro map encodes source locations of tokens | |
436 | that are part of a macro replacement-list, at a macro expansion | |
437 | point. See the extensive comments of struct line_map and struct | |
438 | line_map_macro, in line-map.h. | |
439 | ||
440 | This map shall be created when the macro is expanded. The map | |
441 | encodes the source location of the expansion point of the macro as | |
442 | well as the "original" source location of each token that is part | |
443 | of the macro replacement-list. If a macro is defined but never | |
444 | expanded, it has no macro map. SET is the set of maps the macro | |
445 | map should be part of. MACRO_NODE is the macro which the new macro | |
446 | map should encode source locations for. EXPANSION is the location | |
447 | of the expansion point of MACRO. For function-like macros | |
448 | invocations, it's best to make it point to the closing parenthesis | |
449 | of the macro, rather than the the location of the first character | |
450 | of the macro. NUM_TOKENS is the number of tokens that are part of | |
451 | the replacement-list of MACRO. | |
452 | ||
453 | Note that when we run out of the integer space available for source | |
454 | locations, this function returns NULL. In that case, callers of | |
455 | this function cannot encode {line,column} pairs into locations of | |
456 | macro tokens anymore. */ | |
457 | ||
551e34da | 458 | const line_map_macro * |
97bfb9ef | 459 | linemap_enter_macro (struct line_maps *set, struct cpp_hashnode *macro_node, |
460 | source_location expansion, unsigned int num_tokens) | |
461 | { | |
551e34da | 462 | line_map_macro *map; |
97bfb9ef | 463 | source_location start_location; |
de2e6b8a | 464 | /* Cast away extern "C" from the type of xrealloc. */ |
465 | line_map_realloc reallocator = (set->reallocator | |
466 | ? set->reallocator | |
467 | : (line_map_realloc) xrealloc); | |
97bfb9ef | 468 | |
469 | start_location = LINEMAPS_MACRO_LOWEST_LOCATION (set) - num_tokens; | |
470 | ||
471 | if (start_location <= set->highest_line | |
472 | || start_location > LINEMAPS_MACRO_LOWEST_LOCATION (set)) | |
473 | /* We ran out of macro map space. */ | |
474 | return NULL; | |
475 | ||
551e34da | 476 | map = linemap_check_macro (new_linemap (set, LC_ENTER_MACRO)); |
97bfb9ef | 477 | |
3ce1a212 | 478 | map->start_location = start_location; |
479 | map->macro = macro_node; | |
480 | map->n_tokens = num_tokens; | |
481 | map->macro_locations | |
97bfb9ef | 482 | = (source_location*) reallocator (NULL, |
483 | 2 * num_tokens | |
484 | * sizeof (source_location)); | |
3ce1a212 | 485 | map->expansion = expansion; |
97bfb9ef | 486 | memset (MACRO_MAP_LOCATIONS (map), 0, |
487 | num_tokens * sizeof (source_location)); | |
488 | ||
489 | LINEMAPS_MACRO_CACHE (set) = LINEMAPS_MACRO_USED (set) - 1; | |
97bfb9ef | 490 | |
491 | return map; | |
492 | } | |
493 | ||
494 | /* Create and return a virtual location for a token that is part of a | |
495 | macro expansion-list at a macro expansion point. See the comment | |
496 | inside struct line_map_macro to see what an expansion-list exactly | |
497 | is. | |
498 | ||
499 | A call to this function must come after a call to | |
500 | linemap_enter_macro. | |
501 | ||
502 | MAP is the map into which the source location is created. TOKEN_NO | |
503 | is the index of the token in the macro replacement-list, starting | |
504 | at number 0. | |
505 | ||
506 | ORIG_LOC is the location of the token outside of this macro | |
507 | expansion. If the token comes originally from the macro | |
508 | definition, it is the locus in the macro definition; otherwise it | |
509 | is a location in the context of the caller of this macro expansion | |
510 | (which is a virtual location or a source location if the caller is | |
511 | itself a macro expansion or not). | |
512 | ||
1fcf9669 | 513 | ORIG_PARM_REPLACEMENT_LOC is the location in the macro definition, |
97bfb9ef | 514 | either of the token itself or of a macro parameter that it |
515 | replaces. */ | |
516 | ||
517 | source_location | |
551e34da | 518 | linemap_add_macro_token (const line_map_macro *map, |
97bfb9ef | 519 | unsigned int token_no, |
520 | source_location orig_loc, | |
521 | source_location orig_parm_replacement_loc) | |
522 | { | |
523 | source_location result; | |
524 | ||
525 | linemap_assert (linemap_macro_expansion_map_p (map)); | |
526 | linemap_assert (token_no < MACRO_MAP_NUM_MACRO_TOKENS (map)); | |
527 | ||
528 | MACRO_MAP_LOCATIONS (map)[2 * token_no] = orig_loc; | |
529 | MACRO_MAP_LOCATIONS (map)[2 * token_no + 1] = orig_parm_replacement_loc; | |
530 | ||
531 | result = MAP_START_LOCATION (map) + token_no; | |
532 | return result; | |
533 | } | |
534 | ||
535 | /* Return a source_location for the start (i.e. column==0) of | |
536 | (physical) line TO_LINE in the current source file (as in the | |
537 | most recent linemap_add). MAX_COLUMN_HINT is the highest column | |
538 | number we expect to use in this line (but it does not change | |
539 | the highest_location). */ | |
540 | ||
610625e3 | 541 | source_location |
4999c35b | 542 | linemap_line_start (struct line_maps *set, linenum_type to_line, |
610625e3 | 543 | unsigned int max_column_hint) |
544 | { | |
551e34da | 545 | line_map_ordinary *map = LINEMAPS_LAST_ORDINARY_MAP (set); |
610625e3 | 546 | source_location highest = set->highest_location; |
547 | source_location r; | |
97bfb9ef | 548 | linenum_type last_line = |
549 | SOURCE_LINE (map, set->highest_line); | |
610625e3 | 550 | int line_delta = to_line - last_line; |
551 | bool add_map = false; | |
97bfb9ef | 552 | |
610625e3 | 553 | if (line_delta < 0 |
97bfb9ef | 554 | || (line_delta > 10 |
555 | && line_delta * ORDINARY_MAP_NUMBER_OF_COLUMN_BITS (map) > 1000) | |
556 | || (max_column_hint >= (1U << ORDINARY_MAP_NUMBER_OF_COLUMN_BITS (map))) | |
557 | || (max_column_hint <= 80 | |
1feb1b2d | 558 | && ORDINARY_MAP_NUMBER_OF_COLUMN_BITS (map) >= 10) |
0d344d27 | 559 | || (highest > LINE_MAP_MAX_LOCATION_WITH_COLS |
560 | && (set->max_column_hint || highest >= LINE_MAP_MAX_SOURCE_LOCATION))) | |
1feb1b2d | 561 | add_map = true; |
610625e3 | 562 | else |
563 | max_column_hint = set->max_column_hint; | |
564 | if (add_map) | |
565 | { | |
566 | int column_bits; | |
0d344d27 | 567 | if (max_column_hint > LINE_MAP_MAX_COLUMN_NUMBER |
568 | || highest > LINE_MAP_MAX_LOCATION_WITH_COLS) | |
610625e3 | 569 | { |
0b7f838f | 570 | /* If the column number is ridiculous or we've allocated a huge |
571 | number of source_locations, give up on column numbers. */ | |
610625e3 | 572 | max_column_hint = 0; |
610625e3 | 573 | column_bits = 0; |
0d344d27 | 574 | if (highest > LINE_MAP_MAX_SOURCE_LOCATION) |
575 | return 0; | |
610625e3 | 576 | } |
577 | else | |
578 | { | |
579 | column_bits = 7; | |
580 | while (max_column_hint >= (1U << column_bits)) | |
581 | column_bits++; | |
582 | max_column_hint = 1U << column_bits; | |
583 | } | |
0b7f838f | 584 | /* Allocate the new line_map. However, if the current map only has a |
585 | single line we can sometimes just increase its column_bits instead. */ | |
610625e3 | 586 | if (line_delta < 0 |
97bfb9ef | 587 | || last_line != ORDINARY_MAP_STARTING_LINE_NUMBER (map) |
610625e3 | 588 | || SOURCE_COLUMN (map, highest) >= (1U << column_bits)) |
551e34da | 589 | map = linemap_check_ordinary |
590 | (const_cast <line_map *> | |
591 | (linemap_add (set, LC_RENAME, | |
592 | ORDINARY_MAP_IN_SYSTEM_HEADER_P (map), | |
593 | ORDINARY_MAP_FILE_NAME (map), | |
594 | to_line))); | |
3ce1a212 | 595 | map->column_bits = column_bits; |
97bfb9ef | 596 | r = (MAP_START_LOCATION (map) |
597 | + ((to_line - ORDINARY_MAP_STARTING_LINE_NUMBER (map)) | |
598 | << column_bits)); | |
610625e3 | 599 | } |
600 | else | |
601 | r = highest - SOURCE_COLUMN (map, highest) | |
97bfb9ef | 602 | + (line_delta << ORDINARY_MAP_NUMBER_OF_COLUMN_BITS (map)); |
603 | ||
604 | /* Locations of ordinary tokens are always lower than locations of | |
605 | macro tokens. */ | |
606 | if (r >= LINEMAPS_MACRO_LOWEST_LOCATION (set)) | |
607 | return 0; | |
608 | ||
dbddc569 | 609 | set->highest_line = r; |
610625e3 | 610 | if (r > set->highest_location) |
611 | set->highest_location = r; | |
612 | set->max_column_hint = max_column_hint; | |
613 | return r; | |
614 | } | |
615 | ||
97bfb9ef | 616 | /* Encode and return a source_location from a column number. The |
617 | source line considered is the last source line used to call | |
618 | linemap_line_start, i.e, the last source line which a location was | |
619 | encoded from. */ | |
620 | ||
dbddc569 | 621 | source_location |
622 | linemap_position_for_column (struct line_maps *set, unsigned int to_column) | |
623 | { | |
624 | source_location r = set->highest_line; | |
97bfb9ef | 625 | |
626 | linemap_assert | |
627 | (!linemap_macro_expansion_map_p (LINEMAPS_LAST_ORDINARY_MAP (set))); | |
628 | ||
dbddc569 | 629 | if (to_column >= set->max_column_hint) |
630 | { | |
0d344d27 | 631 | if (r > LINE_MAP_MAX_LOCATION_WITH_COLS |
632 | || to_column > LINE_MAP_MAX_COLUMN_NUMBER) | |
dbddc569 | 633 | { |
634 | /* Running low on source_locations - disable column numbers. */ | |
635 | return r; | |
636 | } | |
637 | else | |
638 | { | |
551e34da | 639 | line_map_ordinary *map = LINEMAPS_LAST_ORDINARY_MAP (set); |
dbddc569 | 640 | r = linemap_line_start (set, SOURCE_LINE (map, r), to_column + 50); |
641 | } | |
642 | } | |
643 | r = r + to_column; | |
644 | if (r >= set->highest_location) | |
645 | set->highest_location = r; | |
646 | return r; | |
647 | } | |
648 | ||
97bfb9ef | 649 | /* Encode and return a source location from a given line and |
650 | column. */ | |
38692459 | 651 | |
97bfb9ef | 652 | source_location |
551e34da | 653 | linemap_position_for_line_and_column (const line_map_ordinary *ord_map, |
97bfb9ef | 654 | linenum_type line, |
655 | unsigned column) | |
656 | { | |
551e34da | 657 | linemap_assert (ORDINARY_MAP_STARTING_LINE_NUMBER (ord_map) <= line); |
97bfb9ef | 658 | |
551e34da | 659 | return (MAP_START_LOCATION (ord_map) |
660 | + ((line - ORDINARY_MAP_STARTING_LINE_NUMBER (ord_map)) | |
661 | << ORDINARY_MAP_NUMBER_OF_COLUMN_BITS (ord_map)) | |
662 | + (column & ((1 << ORDINARY_MAP_NUMBER_OF_COLUMN_BITS (ord_map)) - 1))); | |
97bfb9ef | 663 | } |
664 | ||
766928aa | 665 | /* Encode and return a source_location starting from location LOC and |
666 | shifting it by OFFSET columns. This function does not support | |
667 | virtual locations. */ | |
668 | ||
669 | source_location | |
670 | linemap_position_for_loc_and_offset (struct line_maps *set, | |
671 | source_location loc, | |
672 | unsigned int offset) | |
673 | { | |
551e34da | 674 | const line_map_ordinary * map = NULL; |
766928aa | 675 | |
676 | /* This function does not support virtual locations yet. */ | |
324da92d | 677 | if (linemap_assert_fails |
678 | (!linemap_location_from_macro_expansion_p (set, loc))) | |
679 | return loc; | |
766928aa | 680 | |
681 | if (offset == 0 | |
682 | /* Adding an offset to a reserved location (like | |
683 | UNKNOWN_LOCATION for the C/C++ FEs) does not really make | |
684 | sense. So let's leave the location intact in that case. */ | |
685 | || loc < RESERVED_LOCATION_COUNT) | |
686 | return loc; | |
687 | ||
688 | /* We find the real location and shift it. */ | |
689 | loc = linemap_resolve_location (set, loc, LRK_SPELLING_LOCATION, &map); | |
690 | /* The new location (loc + offset) should be higher than the first | |
6e84ccad | 691 | location encoded by MAP. |
692 | FIXME: We used to linemap_assert_fails here and in the if below, | |
693 | but that led to PR66415. So give up for now. */ | |
694 | if ((MAP_START_LOCATION (map) >= loc + offset)) | |
324da92d | 695 | return loc; |
766928aa | 696 | |
697 | /* If MAP is not the last line map of its set, then the new location | |
698 | (loc + offset) should be less than the first location encoded by | |
699 | the next line map of the set. */ | |
700 | if (map != LINEMAPS_LAST_ORDINARY_MAP (set)) | |
6e84ccad | 701 | if ((loc + offset >= MAP_START_LOCATION (&map[1]))) |
324da92d | 702 | return loc; |
766928aa | 703 | |
704 | offset += SOURCE_COLUMN (map, loc); | |
551e34da | 705 | if (linemap_assert_fails |
706 | (offset < (1u << map->column_bits))) | |
324da92d | 707 | return loc; |
766928aa | 708 | |
709 | source_location r = | |
710 | linemap_position_for_line_and_column (map, | |
711 | SOURCE_LINE (map, loc), | |
712 | offset); | |
6d6bdc28 | 713 | if (linemap_assert_fails (r <= set->highest_location) |
714 | || linemap_assert_fails (map == linemap_lookup (set, r))) | |
324da92d | 715 | return loc; |
716 | ||
766928aa | 717 | return r; |
718 | } | |
719 | ||
97bfb9ef | 720 | /* Given a virtual source location yielded by a map (either an |
721 | ordinary or a macro map), returns that map. */ | |
722 | ||
723 | const struct line_map* | |
fd3638df | 724 | linemap_lookup (struct line_maps *set, source_location line) |
97bfb9ef | 725 | { |
5169661d | 726 | if (IS_ADHOC_LOC (line)) |
727 | line = set->location_adhoc_data_map.data[line & MAX_SOURCE_LOCATION].locus; | |
97bfb9ef | 728 | if (linemap_location_from_macro_expansion_p (set, line)) |
729 | return linemap_macro_map_lookup (set, line); | |
730 | return linemap_ordinary_map_lookup (set, line); | |
731 | } | |
732 | ||
733 | /* Given a source location yielded by an ordinary map, returns that | |
734 | map. Since the set is built chronologically, the logical lines are | |
735 | monotonic increasing, and so the list is sorted and we can use a | |
736 | binary search. */ | |
737 | ||
551e34da | 738 | static const line_map_ordinary * |
97bfb9ef | 739 | linemap_ordinary_map_lookup (struct line_maps *set, source_location line) |
38692459 | 740 | { |
088db31b | 741 | unsigned int md, mn, mx; |
551e34da | 742 | const line_map_ordinary *cached, *result; |
088db31b | 743 | |
5169661d | 744 | if (IS_ADHOC_LOC (line)) |
745 | line = set->location_adhoc_data_map.data[line & MAX_SOURCE_LOCATION].locus; | |
746 | ||
97bfb9ef | 747 | if (set == NULL || line < RESERVED_LOCATION_COUNT) |
748 | return NULL; | |
749 | ||
750 | mn = LINEMAPS_ORDINARY_CACHE (set); | |
751 | mx = LINEMAPS_ORDINARY_USED (set); | |
088db31b | 752 | |
97bfb9ef | 753 | cached = LINEMAPS_ORDINARY_MAP_AT (set, mn); |
7c2df241 | 754 | /* We should get a segfault if no line_maps have been added yet. */ |
97bfb9ef | 755 | if (line >= MAP_START_LOCATION (cached)) |
088db31b | 756 | { |
97bfb9ef | 757 | if (mn + 1 == mx || line < MAP_START_LOCATION (&cached[1])) |
088db31b | 758 | return cached; |
759 | } | |
760 | else | |
761 | { | |
762 | mx = mn; | |
763 | mn = 0; | |
764 | } | |
38692459 | 765 | |
766 | while (mx - mn > 1) | |
767 | { | |
768 | md = (mn + mx) / 2; | |
97bfb9ef | 769 | if (MAP_START_LOCATION (LINEMAPS_ORDINARY_MAP_AT (set, md)) > line) |
38692459 | 770 | mx = md; |
771 | else | |
772 | mn = md; | |
773 | } | |
774 | ||
97bfb9ef | 775 | LINEMAPS_ORDINARY_CACHE (set) = mn; |
776 | result = LINEMAPS_ORDINARY_MAP_AT (set, mn); | |
777 | linemap_assert (line >= MAP_START_LOCATION (result)); | |
778 | return result; | |
779 | } | |
780 | ||
781 | /* Given a source location yielded by a macro map, returns that map. | |
782 | Since the set is built chronologically, the logical lines are | |
783 | monotonic decreasing, and so the list is sorted and we can use a | |
784 | binary search. */ | |
785 | ||
551e34da | 786 | static const line_map_macro * |
97bfb9ef | 787 | linemap_macro_map_lookup (struct line_maps *set, source_location line) |
788 | { | |
789 | unsigned int md, mn, mx; | |
551e34da | 790 | const struct line_map_macro *cached, *result; |
97bfb9ef | 791 | |
5169661d | 792 | if (IS_ADHOC_LOC (line)) |
793 | line = set->location_adhoc_data_map.data[line & MAX_SOURCE_LOCATION].locus; | |
794 | ||
97bfb9ef | 795 | linemap_assert (line >= LINEMAPS_MACRO_LOWEST_LOCATION (set)); |
796 | ||
797 | if (set == NULL) | |
798 | return NULL; | |
799 | ||
800 | mn = LINEMAPS_MACRO_CACHE (set); | |
801 | mx = LINEMAPS_MACRO_USED (set); | |
802 | cached = LINEMAPS_MACRO_MAP_AT (set, mn); | |
803 | ||
804 | if (line >= MAP_START_LOCATION (cached)) | |
805 | { | |
806 | if (mn == 0 || line < MAP_START_LOCATION (&cached[-1])) | |
807 | return cached; | |
808 | mx = mn - 1; | |
809 | mn = 0; | |
810 | } | |
811 | ||
68928989 | 812 | while (mn < mx) |
97bfb9ef | 813 | { |
814 | md = (mx + mn) / 2; | |
815 | if (MAP_START_LOCATION (LINEMAPS_MACRO_MAP_AT (set, md)) > line) | |
68928989 | 816 | mn = md + 1; |
97bfb9ef | 817 | else |
818 | mx = md; | |
68928989 | 819 | } |
97bfb9ef | 820 | |
821 | LINEMAPS_MACRO_CACHE (set) = mx; | |
822 | result = LINEMAPS_MACRO_MAP_AT (set, LINEMAPS_MACRO_CACHE (set)); | |
823 | linemap_assert (MAP_START_LOCATION (result) <= line); | |
824 | ||
825 | return result; | |
826 | } | |
827 | ||
828 | /* Return TRUE if MAP encodes locations coming from a macro | |
829 | replacement-list at macro expansion point. */ | |
830 | ||
831 | bool | |
832 | linemap_macro_expansion_map_p (const struct line_map *map) | |
833 | { | |
834 | if (!map) | |
835 | return false; | |
836 | return (map->reason == LC_ENTER_MACRO); | |
837 | } | |
838 | ||
839 | /* If LOCATION is the locus of a token in a replacement-list of a | |
840 | macro expansion return the location of the macro expansion point. | |
841 | ||
842 | Read the comments of struct line_map and struct line_map_macro in | |
843 | line-map.h to understand what a macro expansion point is. */ | |
844 | ||
a67520a9 | 845 | static source_location |
551e34da | 846 | linemap_macro_map_loc_to_exp_point (const line_map_macro *map, |
a67520a9 | 847 | source_location location ATTRIBUTE_UNUSED) |
97bfb9ef | 848 | { |
97bfb9ef | 849 | linemap_assert (linemap_macro_expansion_map_p (map) |
850 | && location >= MAP_START_LOCATION (map)); | |
851 | ||
852 | /* Make sure LOCATION is correct. */ | |
a67520a9 | 853 | linemap_assert ((location - MAP_START_LOCATION (map)) |
854 | < MACRO_MAP_NUM_MACRO_TOKENS (map)); | |
97bfb9ef | 855 | |
856 | return MACRO_MAP_EXPANSION_POINT_LOCATION (map); | |
857 | } | |
858 | ||
1fcf9669 | 859 | /* LOCATION is the source location of a token that belongs to a macro |
860 | replacement-list as part of the macro expansion denoted by MAP. | |
97bfb9ef | 861 | |
1fcf9669 | 862 | Return the location of the token at the definition point of the |
863 | macro. */ | |
864 | ||
865 | static source_location | |
551e34da | 866 | linemap_macro_map_loc_to_def_point (const line_map_macro *map, |
97bfb9ef | 867 | source_location location) |
868 | { | |
869 | unsigned token_no; | |
870 | ||
871 | linemap_assert (linemap_macro_expansion_map_p (map) | |
872 | && location >= MAP_START_LOCATION (map)); | |
873 | linemap_assert (location >= RESERVED_LOCATION_COUNT); | |
874 | ||
875 | token_no = location - MAP_START_LOCATION (map); | |
876 | linemap_assert (token_no < MACRO_MAP_NUM_MACRO_TOKENS (map)); | |
877 | ||
878 | location = MACRO_MAP_LOCATIONS (map)[2 * token_no + 1]; | |
879 | ||
880 | return location; | |
881 | } | |
882 | ||
883 | /* If LOCATION is the locus of a token that is an argument of a | |
884 | function-like macro M and appears in the expansion of M, return the | |
885 | locus of that argument in the context of the caller of M. | |
886 | ||
887 | In other words, this returns the xI location presented in the | |
888 | comments of line_map_macro above. */ | |
889 | source_location | |
551e34da | 890 | linemap_macro_map_loc_unwind_toward_spelling (const line_map_macro* map, |
97bfb9ef | 891 | source_location location) |
892 | { | |
893 | unsigned token_no; | |
894 | ||
895 | linemap_assert (linemap_macro_expansion_map_p (map) | |
896 | && location >= MAP_START_LOCATION (map)); | |
897 | linemap_assert (location >= RESERVED_LOCATION_COUNT); | |
898 | ||
899 | token_no = location - MAP_START_LOCATION (map); | |
900 | linemap_assert (token_no < MACRO_MAP_NUM_MACRO_TOKENS (map)); | |
901 | ||
902 | location = MACRO_MAP_LOCATIONS (map)[2 * token_no]; | |
903 | ||
904 | return location; | |
905 | } | |
906 | ||
907 | /* Return the source line number corresponding to source location | |
908 | LOCATION. SET is the line map set LOCATION comes from. If | |
909 | LOCATION is the source location of token that is part of the | |
910 | replacement-list of a macro expansion return the line number of the | |
911 | macro expansion point. */ | |
912 | ||
913 | int | |
914 | linemap_get_expansion_line (struct line_maps *set, | |
915 | source_location location) | |
916 | { | |
551e34da | 917 | const line_map_ordinary *map = NULL; |
97bfb9ef | 918 | |
5169661d | 919 | if (IS_ADHOC_LOC (location)) |
6e5a7913 | 920 | location = set->location_adhoc_data_map.data[location |
921 | & MAX_SOURCE_LOCATION].locus; | |
5169661d | 922 | |
97bfb9ef | 923 | if (location < RESERVED_LOCATION_COUNT) |
924 | return 0; | |
925 | ||
926 | location = | |
927 | linemap_macro_loc_to_exp_point (set, location, &map); | |
928 | ||
929 | return SOURCE_LINE (map, location); | |
930 | } | |
931 | ||
932 | /* Return the path of the file corresponding to source code location | |
933 | LOCATION. | |
934 | ||
935 | If LOCATION is the source location of token that is part of the | |
936 | replacement-list of a macro expansion return the file path of the | |
937 | macro expansion point. | |
938 | ||
939 | SET is the line map set LOCATION comes from. */ | |
940 | ||
941 | const char* | |
942 | linemap_get_expansion_filename (struct line_maps *set, | |
943 | source_location location) | |
944 | { | |
551e34da | 945 | const struct line_map_ordinary *map = NULL; |
97bfb9ef | 946 | |
5169661d | 947 | if (IS_ADHOC_LOC (location)) |
6e5a7913 | 948 | location = set->location_adhoc_data_map.data[location |
949 | & MAX_SOURCE_LOCATION].locus; | |
5169661d | 950 | |
97bfb9ef | 951 | if (location < RESERVED_LOCATION_COUNT) |
952 | return NULL; | |
953 | ||
954 | location = | |
955 | linemap_macro_loc_to_exp_point (set, location, &map); | |
956 | ||
957 | return LINEMAP_FILE (map); | |
958 | } | |
959 | ||
960 | /* Return the name of the macro associated to MACRO_MAP. */ | |
961 | ||
962 | const char* | |
551e34da | 963 | linemap_map_get_macro_name (const line_map_macro *macro_map) |
97bfb9ef | 964 | { |
965 | linemap_assert (macro_map && linemap_macro_expansion_map_p (macro_map)); | |
966 | return (const char*) NODE_NAME (MACRO_MAP_MACRO (macro_map)); | |
967 | } | |
968 | ||
969 | /* Return a positive value if LOCATION is the locus of a token that is | |
970 | located in a system header, O otherwise. It returns 1 if LOCATION | |
971 | is the locus of a token that is located in a system header, and 2 | |
972 | if LOCATION is the locus of a token located in a C system header | |
973 | that therefore needs to be extern "C" protected in C++. | |
974 | ||
975 | Note that this function returns 1 if LOCATION belongs to a token | |
976 | that is part of a macro replacement-list defined in a system | |
977 | header, but expanded in a non-system file. */ | |
978 | ||
979 | int | |
980 | linemap_location_in_system_header_p (struct line_maps *set, | |
981 | source_location location) | |
982 | { | |
983 | const struct line_map *map = NULL; | |
984 | ||
5169661d | 985 | if (IS_ADHOC_LOC (location)) |
6e5a7913 | 986 | location = set->location_adhoc_data_map.data[location |
987 | & MAX_SOURCE_LOCATION].locus; | |
5169661d | 988 | |
5ebe2143 | 989 | if (location < RESERVED_LOCATION_COUNT) |
990 | return false; | |
991 | ||
0aa42a53 | 992 | /* Let's look at where the token for LOCATION comes from. */ |
993 | while (true) | |
994 | { | |
995 | map = linemap_lookup (set, location); | |
996 | if (map != NULL) | |
997 | { | |
998 | if (!linemap_macro_expansion_map_p (map)) | |
999 | /* It's a normal token. */ | |
551e34da | 1000 | return LINEMAP_SYSP (linemap_check_ordinary (map)); |
0aa42a53 | 1001 | else |
1002 | { | |
551e34da | 1003 | const line_map_macro *macro_map = linemap_check_macro (map); |
1004 | ||
0aa42a53 | 1005 | /* It's a token resulting from a macro expansion. */ |
1006 | source_location loc = | |
551e34da | 1007 | linemap_macro_map_loc_unwind_toward_spelling (macro_map, location); |
0aa42a53 | 1008 | if (loc < RESERVED_LOCATION_COUNT) |
1009 | /* This token might come from a built-in macro. Let's | |
1010 | look at where that macro got expanded. */ | |
551e34da | 1011 | location = linemap_macro_map_loc_to_exp_point (macro_map, location); |
0aa42a53 | 1012 | else |
1013 | location = loc; | |
1014 | } | |
1015 | } | |
1016 | else | |
1017 | break; | |
1018 | } | |
1019 | return false; | |
97bfb9ef | 1020 | } |
1021 | ||
1022 | /* Return TRUE if LOCATION is a source code location of a token coming | |
1023 | from a macro replacement-list at a macro expansion point, FALSE | |
1024 | otherwise. */ | |
1025 | ||
1026 | bool | |
1fcf9669 | 1027 | linemap_location_from_macro_expansion_p (const struct line_maps *set, |
97bfb9ef | 1028 | source_location location) |
1029 | { | |
5169661d | 1030 | if (IS_ADHOC_LOC (location)) |
6e5a7913 | 1031 | location = set->location_adhoc_data_map.data[location |
1032 | & MAX_SOURCE_LOCATION].locus; | |
5169661d | 1033 | |
97bfb9ef | 1034 | linemap_assert (location <= MAX_SOURCE_LOCATION |
1035 | && (set->highest_location | |
1036 | < LINEMAPS_MACRO_LOWEST_LOCATION (set))); | |
1037 | if (set == NULL) | |
1038 | return false; | |
1039 | return (location > set->highest_location); | |
1040 | } | |
1041 | ||
1042 | /* Given two virtual locations *LOC0 and *LOC1, return the first | |
1043 | common macro map in their macro expansion histories. Return NULL | |
1044 | if no common macro was found. *LOC0 (resp. *LOC1) is set to the | |
1045 | virtual location of the token inside the resulting macro. */ | |
1046 | ||
1047 | static const struct line_map* | |
1048 | first_map_in_common_1 (struct line_maps *set, | |
1049 | source_location *loc0, | |
1050 | source_location *loc1) | |
1051 | { | |
1052 | source_location l0 = *loc0, l1 = *loc1; | |
1053 | const struct line_map *map0 = linemap_lookup (set, l0), | |
1054 | *map1 = linemap_lookup (set, l1); | |
1055 | ||
1056 | while (linemap_macro_expansion_map_p (map0) | |
1057 | && linemap_macro_expansion_map_p (map1) | |
1058 | && (map0 != map1)) | |
1059 | { | |
1060 | if (MAP_START_LOCATION (map0) < MAP_START_LOCATION (map1)) | |
1061 | { | |
551e34da | 1062 | l0 = linemap_macro_map_loc_to_exp_point (linemap_check_macro (map0), |
1063 | l0); | |
97bfb9ef | 1064 | map0 = linemap_lookup (set, l0); |
1065 | } | |
1066 | else | |
1067 | { | |
551e34da | 1068 | l1 = linemap_macro_map_loc_to_exp_point (linemap_check_macro (map1), |
1069 | l1); | |
97bfb9ef | 1070 | map1 = linemap_lookup (set, l1); |
1071 | } | |
1072 | } | |
1073 | ||
1074 | if (map0 == map1) | |
1075 | { | |
1076 | *loc0 = l0; | |
1077 | *loc1 = l1; | |
1078 | return map0; | |
1079 | } | |
1080 | return NULL; | |
1081 | } | |
1082 | ||
1083 | /* Given two virtual locations LOC0 and LOC1, return the first common | |
1084 | macro map in their macro expansion histories. Return NULL if no | |
1085 | common macro was found. *RES_LOC0 (resp. *RES_LOC1) is set to the | |
1086 | virtual location of the token inside the resulting macro, upon | |
1087 | return of a non-NULL result. */ | |
1088 | ||
1089 | static const struct line_map* | |
1090 | first_map_in_common (struct line_maps *set, | |
1091 | source_location loc0, | |
1092 | source_location loc1, | |
1093 | source_location *res_loc0, | |
1094 | source_location *res_loc1) | |
1095 | { | |
1096 | *res_loc0 = loc0; | |
1097 | *res_loc1 = loc1; | |
1098 | ||
1099 | return first_map_in_common_1 (set, res_loc0, res_loc1); | |
1100 | } | |
1101 | ||
1102 | /* Return a positive value if PRE denotes the location of a token that | |
1103 | comes before the token of POST, 0 if PRE denotes the location of | |
1104 | the same token as the token for POST, and a negative value | |
1105 | otherwise. */ | |
1106 | ||
1107 | int | |
1108 | linemap_compare_locations (struct line_maps *set, | |
1109 | source_location pre, | |
1110 | source_location post) | |
1111 | { | |
1112 | bool pre_virtual_p, post_virtual_p; | |
1113 | source_location l0 = pre, l1 = post; | |
1114 | ||
6e5a7913 | 1115 | if (IS_ADHOC_LOC (l0)) |
1116 | l0 = set->location_adhoc_data_map.data[l0 & MAX_SOURCE_LOCATION].locus; | |
1117 | if (IS_ADHOC_LOC (l1)) | |
1118 | l1 = set->location_adhoc_data_map.data[l1 & MAX_SOURCE_LOCATION].locus; | |
1119 | ||
97bfb9ef | 1120 | if (l0 == l1) |
1121 | return 0; | |
1122 | ||
1123 | if ((pre_virtual_p = linemap_location_from_macro_expansion_p (set, l0))) | |
1124 | l0 = linemap_resolve_location (set, l0, | |
1125 | LRK_MACRO_EXPANSION_POINT, | |
1126 | NULL); | |
1127 | ||
1128 | if ((post_virtual_p = linemap_location_from_macro_expansion_p (set, l1))) | |
1129 | l1 = linemap_resolve_location (set, l1, | |
1130 | LRK_MACRO_EXPANSION_POINT, | |
1131 | NULL); | |
1132 | ||
1133 | if (l0 == l1 | |
1134 | && pre_virtual_p | |
1135 | && post_virtual_p) | |
1136 | { | |
1137 | /* So pre and post represent two tokens that are present in a | |
1138 | same macro expansion. Let's see if the token for pre was | |
1139 | before the token for post in that expansion. */ | |
1140 | unsigned i0, i1; | |
1141 | const struct line_map *map = | |
1142 | first_map_in_common (set, pre, post, &l0, &l1); | |
1143 | ||
1144 | if (map == NULL) | |
1145 | /* This should not be possible. */ | |
1146 | abort (); | |
1147 | ||
1148 | i0 = l0 - MAP_START_LOCATION (map); | |
1149 | i1 = l1 - MAP_START_LOCATION (map); | |
1150 | return i1 - i0; | |
1151 | } | |
1152 | ||
1153 | return l1 - l0; | |
38692459 | 1154 | } |
bd507c05 | 1155 | |
438ac94c | 1156 | /* Print an include trace, for e.g. the -H option of the preprocessor. */ |
1157 | ||
1158 | static void | |
551e34da | 1159 | trace_include (const struct line_maps *set, const line_map_ordinary *map) |
438ac94c | 1160 | { |
4087823d | 1161 | unsigned int i = set->depth; |
438ac94c | 1162 | |
4087823d | 1163 | while (--i) |
438ac94c | 1164 | putc ('.', stderr); |
97bfb9ef | 1165 | |
1166 | fprintf (stderr, " %s\n", ORDINARY_MAP_FILE_NAME (map)); | |
1167 | } | |
1168 | ||
1169 | /* Return the spelling location of the token wherever it comes from, | |
1170 | whether part of a macro definition or not. | |
1171 | ||
1172 | This is a subroutine for linemap_resolve_location. */ | |
1173 | ||
1174 | static source_location | |
1175 | linemap_macro_loc_to_spelling_point (struct line_maps *set, | |
1176 | source_location location, | |
551e34da | 1177 | const line_map_ordinary **original_map) |
97bfb9ef | 1178 | { |
1179 | struct line_map *map; | |
1180 | ||
5169661d | 1181 | if (IS_ADHOC_LOC (location)) |
6e5a7913 | 1182 | location = set->location_adhoc_data_map.data[location |
1183 | & MAX_SOURCE_LOCATION].locus; | |
5169661d | 1184 | |
97bfb9ef | 1185 | linemap_assert (set && location >= RESERVED_LOCATION_COUNT); |
1186 | ||
1187 | while (true) | |
1188 | { | |
551e34da | 1189 | map = const_cast <line_map *> (linemap_lookup (set, location)); |
97bfb9ef | 1190 | if (!linemap_macro_expansion_map_p (map)) |
1191 | break; | |
1192 | ||
551e34da | 1193 | location |
1194 | = linemap_macro_map_loc_unwind_toward_spelling | |
1195 | (linemap_check_macro (map), | |
1196 | location); | |
97bfb9ef | 1197 | } |
1198 | ||
1199 | if (original_map) | |
551e34da | 1200 | *original_map = linemap_check_ordinary (map); |
97bfb9ef | 1201 | return location; |
1202 | } | |
1203 | ||
1204 | /* If LOCATION is the source location of a token that belongs to a | |
1205 | macro replacement-list -- as part of a macro expansion -- then | |
1206 | return the location of the token at the definition point of the | |
1207 | macro. Otherwise, return LOCATION. SET is the set of maps | |
1208 | location come from. ORIGINAL_MAP is an output parm. If non NULL, | |
1209 | the function sets *ORIGINAL_MAP to the ordinary (non-macro) map the | |
1210 | returned location comes from. | |
1211 | ||
1212 | This is a subroutine of linemap_resolve_location. */ | |
1213 | ||
1214 | static source_location | |
1215 | linemap_macro_loc_to_def_point (struct line_maps *set, | |
1216 | source_location location, | |
551e34da | 1217 | const line_map_ordinary **original_map) |
97bfb9ef | 1218 | { |
1219 | struct line_map *map; | |
1220 | ||
5169661d | 1221 | if (IS_ADHOC_LOC (location)) |
6e5a7913 | 1222 | location = set->location_adhoc_data_map.data[location |
1223 | & MAX_SOURCE_LOCATION].locus; | |
5169661d | 1224 | |
97bfb9ef | 1225 | linemap_assert (set && location >= RESERVED_LOCATION_COUNT); |
1226 | ||
1227 | while (true) | |
1228 | { | |
551e34da | 1229 | map = const_cast <line_map *> (linemap_lookup (set, location)); |
97bfb9ef | 1230 | if (!linemap_macro_expansion_map_p (map)) |
1231 | break; | |
1232 | ||
1233 | location = | |
551e34da | 1234 | linemap_macro_map_loc_to_def_point (linemap_check_macro (map), |
1235 | location); | |
97bfb9ef | 1236 | } |
1237 | ||
1238 | if (original_map) | |
551e34da | 1239 | *original_map = linemap_check_ordinary (map); |
97bfb9ef | 1240 | return location; |
1241 | } | |
1242 | ||
1243 | /* If LOCATION is the source location of a token that belongs to a | |
1244 | macro replacement-list -- at a macro expansion point -- then return | |
1245 | the location of the topmost expansion point of the macro. We say | |
1246 | topmost because if we are in the context of a nested macro | |
1247 | expansion, the function returns the source location of the first | |
1248 | macro expansion that triggered the nested expansions. | |
1249 | ||
1250 | Otherwise, return LOCATION. SET is the set of maps location come | |
1251 | from. ORIGINAL_MAP is an output parm. If non NULL, the function | |
1252 | sets *ORIGINAL_MAP to the ordinary (non-macro) map the returned | |
1253 | location comes from. | |
1254 | ||
1255 | This is a subroutine of linemap_resolve_location. */ | |
1256 | ||
1257 | static source_location | |
1258 | linemap_macro_loc_to_exp_point (struct line_maps *set, | |
1259 | source_location location, | |
551e34da | 1260 | const line_map_ordinary **original_map) |
97bfb9ef | 1261 | { |
1262 | struct line_map *map; | |
1263 | ||
5169661d | 1264 | if (IS_ADHOC_LOC (location)) |
6e5a7913 | 1265 | location = set->location_adhoc_data_map.data[location |
1266 | & MAX_SOURCE_LOCATION].locus; | |
5169661d | 1267 | |
97bfb9ef | 1268 | linemap_assert (set && location >= RESERVED_LOCATION_COUNT); |
1269 | ||
1270 | while (true) | |
1271 | { | |
551e34da | 1272 | map = const_cast <line_map *> (linemap_lookup (set, location)); |
97bfb9ef | 1273 | if (!linemap_macro_expansion_map_p (map)) |
1274 | break; | |
551e34da | 1275 | location = linemap_macro_map_loc_to_exp_point (linemap_check_macro (map), |
1276 | location); | |
97bfb9ef | 1277 | } |
1278 | ||
1279 | if (original_map) | |
551e34da | 1280 | *original_map = linemap_check_ordinary (map); |
97bfb9ef | 1281 | return location; |
1282 | } | |
1283 | ||
1284 | /* Resolve a virtual location into either a spelling location, an | |
1285 | expansion point location or a token argument replacement point | |
1286 | location. Return the map that encodes the virtual location as well | |
1287 | as the resolved location. | |
1288 | ||
1289 | If LOC is *NOT* the location of a token resulting from the | |
1290 | expansion of a macro, then the parameter LRK (which stands for | |
1291 | Location Resolution Kind) is ignored and the resulting location | |
1292 | just equals the one given in argument. | |
1293 | ||
1294 | Now if LOC *IS* the location of a token resulting from the | |
1295 | expansion of a macro, this is what happens. | |
1296 | ||
1297 | * If LRK is set to LRK_MACRO_EXPANSION_POINT | |
1298 | ------------------------------- | |
1299 | ||
3f898bd2 | 1300 | The virtual location is resolved to the first macro expansion point |
1301 | that led to this macro expansion. | |
97bfb9ef | 1302 | |
1303 | * If LRK is set to LRK_SPELLING_LOCATION | |
1304 | ------------------------------------- | |
1305 | ||
3f898bd2 | 1306 | The virtual location is resolved to the locus where the token has |
1307 | been spelled in the source. This can follow through all the macro | |
1308 | expansions that led to the token. | |
97bfb9ef | 1309 | |
3f898bd2 | 1310 | * If LRK is set to LRK_MACRO_DEFINITION_LOCATION |
97bfb9ef | 1311 | -------------------------------------- |
1312 | ||
3f898bd2 | 1313 | The virtual location is resolved to the locus of the token in the |
1314 | context of the macro definition. | |
1315 | ||
97bfb9ef | 1316 | If LOC is the locus of a token that is an argument of a |
1317 | function-like macro [replacing a parameter in the replacement list | |
1318 | of the macro] the virtual location is resolved to the locus of the | |
1319 | parameter that is replaced, in the context of the definition of the | |
1320 | macro. | |
1321 | ||
1322 | If LOC is the locus of a token that is not an argument of a | |
1323 | function-like macro, then the function behaves as if LRK was set to | |
1324 | LRK_SPELLING_LOCATION. | |
1325 | ||
1fcf9669 | 1326 | If MAP is not NULL, *MAP is set to the map encoding the |
3f898bd2 | 1327 | returned location. Note that if the returned location wasn't originally |
1fcf9669 | 1328 | encoded by a map, then *MAP is set to NULL. This can happen if LOC |
5ebe2143 | 1329 | resolves to a location reserved for the client code, like |
1330 | UNKNOWN_LOCATION or BUILTINS_LOCATION in GCC. */ | |
97bfb9ef | 1331 | |
1332 | source_location | |
1333 | linemap_resolve_location (struct line_maps *set, | |
1334 | source_location loc, | |
1335 | enum location_resolution_kind lrk, | |
551e34da | 1336 | const line_map_ordinary **map) |
97bfb9ef | 1337 | { |
5169661d | 1338 | if (IS_ADHOC_LOC (loc)) |
1339 | loc = set->location_adhoc_data_map.data[loc & MAX_SOURCE_LOCATION].locus; | |
1340 | ||
5ebe2143 | 1341 | if (loc < RESERVED_LOCATION_COUNT) |
1342 | { | |
1343 | /* A reserved location wasn't encoded in a map. Let's return a | |
1344 | NULL map here, just like what linemap_ordinary_map_lookup | |
1345 | does. */ | |
1346 | if (map) | |
1347 | *map = NULL; | |
1348 | return loc; | |
1349 | } | |
97bfb9ef | 1350 | |
1351 | switch (lrk) | |
1352 | { | |
1353 | case LRK_MACRO_EXPANSION_POINT: | |
1354 | loc = linemap_macro_loc_to_exp_point (set, loc, map); | |
1355 | break; | |
1356 | case LRK_SPELLING_LOCATION: | |
1357 | loc = linemap_macro_loc_to_spelling_point (set, loc, map); | |
1358 | break; | |
1359 | case LRK_MACRO_DEFINITION_LOCATION: | |
1360 | loc = linemap_macro_loc_to_def_point (set, loc, map); | |
1361 | break; | |
1362 | default: | |
1363 | abort (); | |
1364 | } | |
1365 | return loc; | |
1366 | } | |
1367 | ||
1368 | /* | |
1369 | Suppose that LOC is the virtual location of a token T coming from | |
1370 | the expansion of a macro M. This function then steps up to get the | |
1371 | location L of the point where M got expanded. If L is a spelling | |
1372 | location inside a macro expansion M', then this function returns | |
1373 | the locus of the point where M' was expanded. Said otherwise, this | |
1374 | function returns the location of T in the context that triggered | |
1375 | the expansion of M. | |
1376 | ||
1377 | *LOC_MAP must be set to the map of LOC. This function then sets it | |
1378 | to the map of the returned location. */ | |
1379 | ||
1380 | source_location | |
1381 | linemap_unwind_toward_expansion (struct line_maps *set, | |
1382 | source_location loc, | |
1383 | const struct line_map **map) | |
1384 | { | |
1385 | source_location resolved_location; | |
551e34da | 1386 | const line_map_macro *macro_map = linemap_check_macro (*map); |
97bfb9ef | 1387 | const struct line_map *resolved_map; |
1388 | ||
5169661d | 1389 | if (IS_ADHOC_LOC (loc)) |
1390 | loc = set->location_adhoc_data_map.data[loc & MAX_SOURCE_LOCATION].locus; | |
1391 | ||
97bfb9ef | 1392 | resolved_location = |
551e34da | 1393 | linemap_macro_map_loc_unwind_toward_spelling (macro_map, loc); |
97bfb9ef | 1394 | resolved_map = linemap_lookup (set, resolved_location); |
1395 | ||
1396 | if (!linemap_macro_expansion_map_p (resolved_map)) | |
1397 | { | |
551e34da | 1398 | resolved_location = linemap_macro_map_loc_to_exp_point (macro_map, loc); |
97bfb9ef | 1399 | resolved_map = linemap_lookup (set, resolved_location); |
1400 | } | |
1401 | ||
1402 | *map = resolved_map; | |
1403 | return resolved_location; | |
1404 | } | |
1405 | ||
bd172d61 | 1406 | /* If LOC is the virtual location of a token coming from the expansion |
1407 | of a macro M and if its spelling location is reserved (e.g, a | |
1408 | location for a built-in token), then this function unwinds (using | |
1409 | linemap_unwind_toward_expansion) the location until a location that | |
e8aa7eaf | 1410 | is not reserved and is not in a system header is reached. In other |
bd172d61 | 1411 | words, this unwinds the reserved location until a location that is |
1412 | in real source code is reached. | |
1413 | ||
1414 | Otherwise, if the spelling location for LOC is not reserved or if | |
1415 | LOC doesn't come from the expansion of a macro, the function | |
1416 | returns LOC as is and *MAP is not touched. | |
1417 | ||
1418 | *MAP is set to the map of the returned location if the later is | |
1419 | different from LOC. */ | |
1420 | source_location | |
1421 | linemap_unwind_to_first_non_reserved_loc (struct line_maps *set, | |
1422 | source_location loc, | |
1423 | const struct line_map **map) | |
1424 | { | |
1425 | source_location resolved_loc; | |
551e34da | 1426 | const struct line_map *map0 = NULL; |
1427 | const line_map_ordinary *map1 = NULL; | |
bd172d61 | 1428 | |
5169661d | 1429 | if (IS_ADHOC_LOC (loc)) |
1430 | loc = set->location_adhoc_data_map.data[loc & MAX_SOURCE_LOCATION].locus; | |
1431 | ||
bd172d61 | 1432 | map0 = linemap_lookup (set, loc); |
1433 | if (!linemap_macro_expansion_map_p (map0)) | |
1434 | return loc; | |
1435 | ||
1436 | resolved_loc = linemap_resolve_location (set, loc, | |
1437 | LRK_SPELLING_LOCATION, | |
1438 | &map1); | |
1439 | ||
1440 | if (resolved_loc >= RESERVED_LOCATION_COUNT | |
1441 | && !LINEMAP_SYSP (map1)) | |
1442 | return loc; | |
1443 | ||
1444 | while (linemap_macro_expansion_map_p (map0) | |
1445 | && (resolved_loc < RESERVED_LOCATION_COUNT | |
1446 | || LINEMAP_SYSP (map1))) | |
1447 | { | |
1448 | loc = linemap_unwind_toward_expansion (set, loc, &map0); | |
1449 | resolved_loc = linemap_resolve_location (set, loc, | |
1450 | LRK_SPELLING_LOCATION, | |
1451 | &map1); | |
1452 | } | |
1453 | ||
1454 | if (map != NULL) | |
1455 | *map = map0; | |
1456 | return loc; | |
1457 | } | |
1458 | ||
97bfb9ef | 1459 | /* Expand source code location LOC and return a user readable source |
5ebe2143 | 1460 | code location. LOC must be a spelling (non-virtual) location. If |
1461 | it's a location < RESERVED_LOCATION_COUNT a zeroed expanded source | |
1462 | location is returned. */ | |
97bfb9ef | 1463 | |
1464 | expanded_location | |
5ebe2143 | 1465 | linemap_expand_location (struct line_maps *set, |
1466 | const struct line_map *map, | |
97bfb9ef | 1467 | source_location loc) |
1468 | ||
1469 | { | |
1470 | expanded_location xloc; | |
1471 | ||
5ebe2143 | 1472 | memset (&xloc, 0, sizeof (xloc)); |
5169661d | 1473 | if (IS_ADHOC_LOC (loc)) |
1474 | { | |
1475 | loc = set->location_adhoc_data_map.data[loc & MAX_SOURCE_LOCATION].locus; | |
6e5a7913 | 1476 | xloc.data |
1477 | = set->location_adhoc_data_map.data[loc & MAX_SOURCE_LOCATION].data; | |
5169661d | 1478 | } |
5ebe2143 | 1479 | |
1480 | if (loc < RESERVED_LOCATION_COUNT) | |
1481 | /* The location for this token wasn't generated from a line map. | |
1482 | It was probably a location for a builtin token, chosen by some | |
1483 | client code. Let's not try to expand the location in that | |
1484 | case. */; | |
1485 | else if (map == NULL) | |
1486 | /* We shouldn't be getting a NULL map with a location that is not | |
1487 | reserved by the client code. */ | |
1488 | abort (); | |
1489 | else | |
1490 | { | |
1491 | /* MAP must be an ordinary map and LOC must be non-virtual, | |
1492 | encoded into this map, obviously; the accessors used on MAP | |
1493 | below ensure it is ordinary. Let's just assert the | |
1494 | non-virtualness of LOC here. */ | |
1495 | if (linemap_location_from_macro_expansion_p (set, loc)) | |
1496 | abort (); | |
97bfb9ef | 1497 | |
551e34da | 1498 | const line_map_ordinary *ord_map = linemap_check_ordinary (map); |
1499 | ||
1500 | xloc.file = LINEMAP_FILE (ord_map); | |
1501 | xloc.line = SOURCE_LINE (ord_map, loc); | |
1502 | xloc.column = SOURCE_COLUMN (ord_map, loc); | |
1503 | xloc.sysp = LINEMAP_SYSP (ord_map) != 0; | |
5ebe2143 | 1504 | } |
97bfb9ef | 1505 | |
97bfb9ef | 1506 | return xloc; |
438ac94c | 1507 | } |
62db153a | 1508 | |
b082215e | 1509 | |
1510 | /* Dump line map at index IX in line table SET to STREAM. If STREAM | |
1511 | is NULL, use stderr. IS_MACRO is true if the caller wants to | |
1512 | dump a macro map, false otherwise. */ | |
1513 | ||
1514 | void | |
1515 | linemap_dump (FILE *stream, struct line_maps *set, unsigned ix, bool is_macro) | |
1516 | { | |
1517 | const char *lc_reasons_v[LC_ENTER_MACRO + 1] | |
1518 | = { "LC_ENTER", "LC_LEAVE", "LC_RENAME", "LC_RENAME_VERBATIM", | |
1519 | "LC_ENTER_MACRO" }; | |
1520 | const char *reason; | |
551e34da | 1521 | const line_map *map; |
b082215e | 1522 | |
1523 | if (stream == NULL) | |
1524 | stream = stderr; | |
1525 | ||
1526 | if (!is_macro) | |
1527 | map = LINEMAPS_ORDINARY_MAP_AT (set, ix); | |
1528 | else | |
1529 | map = LINEMAPS_MACRO_MAP_AT (set, ix); | |
1530 | ||
1531 | reason = (map->reason <= LC_ENTER_MACRO) ? lc_reasons_v[map->reason] : "???"; | |
1532 | ||
1533 | fprintf (stream, "Map #%u [%p] - LOC: %u - REASON: %s - SYSP: %s\n", | |
1534 | ix, (void *) map, map->start_location, reason, | |
551e34da | 1535 | ((!is_macro |
1536 | && ORDINARY_MAP_IN_SYSTEM_HEADER_P (linemap_check_ordinary (map))) | |
1537 | ? "yes" : "no")); | |
b082215e | 1538 | if (!is_macro) |
1539 | { | |
551e34da | 1540 | const line_map_ordinary *ord_map = linemap_check_ordinary (map); |
b082215e | 1541 | unsigned includer_ix; |
551e34da | 1542 | const line_map_ordinary *includer_map; |
b082215e | 1543 | |
551e34da | 1544 | includer_ix = ORDINARY_MAP_INCLUDER_FILE_INDEX (ord_map); |
b082215e | 1545 | includer_map = includer_ix < LINEMAPS_ORDINARY_USED (set) |
1546 | ? LINEMAPS_ORDINARY_MAP_AT (set, includer_ix) | |
1547 | : NULL; | |
1548 | ||
551e34da | 1549 | fprintf (stream, "File: %s:%d\n", ORDINARY_MAP_FILE_NAME (ord_map), |
1550 | ORDINARY_MAP_STARTING_LINE_NUMBER (ord_map)); | |
b082215e | 1551 | fprintf (stream, "Included from: [%d] %s\n", includer_ix, |
1552 | includer_map ? ORDINARY_MAP_FILE_NAME (includer_map) : "None"); | |
1553 | } | |
1554 | else | |
551e34da | 1555 | { |
1556 | const line_map_macro *macro_map = linemap_check_macro (map); | |
1557 | fprintf (stream, "Macro: %s (%u tokens)\n", | |
1558 | linemap_map_get_macro_name (macro_map), | |
1559 | MACRO_MAP_NUM_MACRO_TOKENS (macro_map)); | |
1560 | } | |
b082215e | 1561 | |
1562 | fprintf (stream, "\n"); | |
1563 | } | |
1564 | ||
1565 | ||
62db153a | 1566 | /* Dump debugging information about source location LOC into the file |
1567 | stream STREAM. SET is the line map set LOC comes from. */ | |
1568 | ||
1569 | void | |
1570 | linemap_dump_location (struct line_maps *set, | |
1571 | source_location loc, | |
1572 | FILE *stream) | |
1573 | { | |
551e34da | 1574 | const line_map_ordinary *map; |
62db153a | 1575 | source_location location; |
5ebe2143 | 1576 | const char *path = "", *from = ""; |
1577 | int l = -1, c = -1, s = -1, e = -1; | |
62db153a | 1578 | |
5169661d | 1579 | if (IS_ADHOC_LOC (loc)) |
1580 | loc = set->location_adhoc_data_map.data[loc & MAX_SOURCE_LOCATION].locus; | |
1581 | ||
62db153a | 1582 | if (loc == 0) |
1583 | return; | |
1584 | ||
1585 | location = | |
1586 | linemap_resolve_location (set, loc, LRK_MACRO_DEFINITION_LOCATION, &map); | |
62db153a | 1587 | |
5ebe2143 | 1588 | if (map == NULL) |
1589 | /* Only reserved locations can be tolerated in this case. */ | |
1590 | linemap_assert (location < RESERVED_LOCATION_COUNT); | |
62db153a | 1591 | else |
5ebe2143 | 1592 | { |
1593 | path = LINEMAP_FILE (map); | |
1594 | l = SOURCE_LINE (map, location); | |
1595 | c = SOURCE_COLUMN (map, location); | |
1596 | s = LINEMAP_SYSP (map) != 0; | |
1597 | e = location != loc; | |
1598 | if (e) | |
1599 | from = "N/A"; | |
1600 | else | |
1601 | from = (INCLUDED_FROM (set, map)) | |
1602 | ? LINEMAP_FILE (INCLUDED_FROM (set, map)) | |
1603 | : "<NULL>"; | |
1604 | } | |
62db153a | 1605 | |
1606 | /* P: path, L: line, C: column, S: in-system-header, M: map address, | |
5ebe2143 | 1607 | E: macro expansion?, LOC: original location, R: resolved location */ |
1608 | fprintf (stream, "{P:%s;F:%s;L:%d;C:%d;S:%d;M:%p;E:%d,LOC:%d,R:%d}", | |
1609 | path, from, l, c, s, (void*)map, e, loc, location); | |
62db153a | 1610 | } |
e77b8253 | 1611 | |
ffc2c526 | 1612 | /* Return the highest location emitted for a given file for which |
1613 | there is a line map in SET. FILE_NAME is the file name to | |
1614 | consider. If the function returns TRUE, *LOC is set to the highest | |
1615 | location emitted for that file. */ | |
1616 | ||
1617 | bool | |
1618 | linemap_get_file_highest_location (struct line_maps *set, | |
1619 | const char *file_name, | |
1620 | source_location *loc) | |
1621 | { | |
1622 | /* If the set is empty or no ordinary map has been created then | |
1623 | there is no file to look for ... */ | |
1624 | if (set == NULL || set->info_ordinary.used == 0) | |
1625 | return false; | |
1626 | ||
1627 | /* Now look for the last ordinary map created for FILE_NAME. */ | |
1628 | int i; | |
1629 | for (i = set->info_ordinary.used - 1; i >= 0; --i) | |
1630 | { | |
551e34da | 1631 | const char *fname = set->info_ordinary.maps[i].to_file; |
ffc2c526 | 1632 | if (fname && !filename_cmp (fname, file_name)) |
1633 | break; | |
1634 | } | |
1635 | ||
1636 | if (i < 0) | |
1637 | return false; | |
1638 | ||
1639 | /* The highest location for a given map is either the starting | |
1640 | location of the next map minus one, or -- if the map is the | |
1641 | latest one -- the highest location of the set. */ | |
1642 | source_location result; | |
1643 | if (i == (int) set->info_ordinary.used - 1) | |
1644 | result = set->highest_location; | |
1645 | else | |
1646 | result = set->info_ordinary.maps[i + 1].start_location - 1; | |
1647 | ||
1648 | *loc = result; | |
1649 | return true; | |
1650 | } | |
1651 | ||
e77b8253 | 1652 | /* Compute and return statistics about the memory consumption of some |
1653 | parts of the line table SET. */ | |
1654 | ||
1655 | void | |
1656 | linemap_get_statistics (struct line_maps *set, | |
1657 | struct linemap_stats *s) | |
1658 | { | |
2a688977 | 1659 | long ordinary_maps_allocated_size, ordinary_maps_used_size, |
e77b8253 | 1660 | macro_maps_allocated_size, macro_maps_used_size, |
1661 | macro_maps_locations_size = 0, duplicated_macro_maps_locations_size = 0; | |
1662 | ||
551e34da | 1663 | const line_map_macro *cur_map; |
e77b8253 | 1664 | |
1665 | ordinary_maps_allocated_size = | |
551e34da | 1666 | LINEMAPS_ORDINARY_ALLOCATED (set) * sizeof (struct line_map_ordinary); |
e77b8253 | 1667 | |
1668 | ordinary_maps_used_size = | |
551e34da | 1669 | LINEMAPS_ORDINARY_USED (set) * sizeof (struct line_map_ordinary); |
e77b8253 | 1670 | |
1671 | macro_maps_allocated_size = | |
551e34da | 1672 | LINEMAPS_MACRO_ALLOCATED (set) * sizeof (struct line_map_macro); |
e77b8253 | 1673 | |
1674 | for (cur_map = LINEMAPS_MACRO_MAPS (set); | |
1675 | cur_map && cur_map <= LINEMAPS_LAST_MACRO_MAP (set); | |
1676 | ++cur_map) | |
1677 | { | |
1678 | unsigned i; | |
1679 | ||
1680 | linemap_assert (linemap_macro_expansion_map_p (cur_map)); | |
1681 | ||
1682 | macro_maps_locations_size += | |
1683 | 2 * MACRO_MAP_NUM_MACRO_TOKENS (cur_map) * sizeof (source_location); | |
1684 | ||
1685 | for (i = 0; i < 2 * MACRO_MAP_NUM_MACRO_TOKENS (cur_map); i += 2) | |
1686 | { | |
1687 | if (MACRO_MAP_LOCATIONS (cur_map)[i] == | |
1688 | MACRO_MAP_LOCATIONS (cur_map)[i + 1]) | |
1689 | duplicated_macro_maps_locations_size += | |
1690 | sizeof (source_location); | |
1691 | } | |
1692 | } | |
1693 | ||
1694 | macro_maps_used_size = | |
551e34da | 1695 | LINEMAPS_MACRO_USED (set) * sizeof (struct line_map_macro); |
e77b8253 | 1696 | |
1697 | s->num_ordinary_maps_allocated = LINEMAPS_ORDINARY_ALLOCATED (set); | |
1698 | s->num_ordinary_maps_used = LINEMAPS_ORDINARY_USED (set); | |
1699 | s->ordinary_maps_allocated_size = ordinary_maps_allocated_size; | |
1700 | s->ordinary_maps_used_size = ordinary_maps_used_size; | |
1701 | s->num_expanded_macros = num_expanded_macros_counter; | |
1702 | s->num_macro_tokens = num_macro_tokens_counter; | |
1703 | s->num_macro_maps_used = LINEMAPS_MACRO_USED (set); | |
1704 | s->macro_maps_allocated_size = macro_maps_allocated_size; | |
1705 | s->macro_maps_locations_size = macro_maps_locations_size; | |
1706 | s->macro_maps_used_size = macro_maps_used_size; | |
1707 | s->duplicated_macro_maps_locations_size = | |
1708 | duplicated_macro_maps_locations_size; | |
1709 | } | |
b082215e | 1710 | |
1711 | ||
1712 | /* Dump line table SET to STREAM. If STREAM is NULL, stderr is used. | |
1713 | NUM_ORDINARY specifies how many ordinary maps to dump. NUM_MACRO | |
1714 | specifies how many macro maps to dump. */ | |
1715 | ||
1716 | void | |
1717 | line_table_dump (FILE *stream, struct line_maps *set, unsigned int num_ordinary, | |
1718 | unsigned int num_macro) | |
1719 | { | |
1720 | unsigned int i; | |
1721 | ||
1722 | if (set == NULL) | |
1723 | return; | |
1724 | ||
1725 | if (stream == NULL) | |
1726 | stream = stderr; | |
1727 | ||
1728 | fprintf (stream, "# of ordinary maps: %d\n", LINEMAPS_ORDINARY_USED (set)); | |
1729 | fprintf (stream, "# of macro maps: %d\n", LINEMAPS_MACRO_USED (set)); | |
1730 | fprintf (stream, "Include stack depth: %d\n", set->depth); | |
1731 | fprintf (stream, "Highest location: %u\n", set->highest_location); | |
1732 | ||
1733 | if (num_ordinary) | |
1734 | { | |
1735 | fprintf (stream, "\nOrdinary line maps\n"); | |
1736 | for (i = 0; i < num_ordinary && i < LINEMAPS_ORDINARY_USED (set); i++) | |
1737 | linemap_dump (stream, set, i, false); | |
1738 | fprintf (stream, "\n"); | |
1739 | } | |
1740 | ||
1741 | if (num_macro) | |
1742 | { | |
1743 | fprintf (stream, "\nMacro line maps\n"); | |
1744 | for (i = 0; i < num_macro && i < LINEMAPS_MACRO_USED (set); i++) | |
1745 | linemap_dump (stream, set, i, true); | |
1746 | fprintf (stream, "\n"); | |
1747 | } | |
1748 | } |