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447924ef | 1 | /* Data and functions related to line maps and input files. |
85ec4feb | 2 | Copyright (C) 2004-2018 Free Software Foundation, Inc. |
447924ef JM |
3 | |
4 | This file is part of GCC. | |
5 | ||
6 | GCC is free software; you can redistribute it and/or modify it under | |
7 | the terms of the GNU General Public License as published by the Free | |
8 | Software Foundation; either version 3, or (at your option) any later | |
9 | version. | |
10 | ||
11 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 | for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GCC; see the file COPYING3. If not see | |
18 | <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include "config.h" | |
21 | #include "system.h" | |
22 | #include "coretypes.h" | |
23 | #include "intl.h" | |
ba4ad400 | 24 | #include "diagnostic-core.h" |
d9b950dd | 25 | #include "selftest.h" |
741d3be5 | 26 | #include "cpplib.h" |
7ecc3eb9 | 27 | |
a7d79e5c DM |
28 | #ifndef HAVE_ICONV |
29 | #define HAVE_ICONV 0 | |
30 | #endif | |
31 | ||
7ecc3eb9 DS |
32 | /* This is a cache used by get_next_line to store the content of a |
33 | file to be searched for file lines. */ | |
34 | struct fcache | |
35 | { | |
36 | /* These are information used to store a line boundary. */ | |
37 | struct line_info | |
38 | { | |
39 | /* The line number. It starts from 1. */ | |
40 | size_t line_num; | |
41 | ||
42 | /* The position (byte count) of the beginning of the line, | |
43 | relative to the file data pointer. This starts at zero. */ | |
44 | size_t start_pos; | |
45 | ||
46 | /* The position (byte count) of the last byte of the line. This | |
47 | normally points to the '\n' character, or to one byte after the | |
48 | last byte of the file, if the file doesn't contain a '\n' | |
49 | character. */ | |
50 | size_t end_pos; | |
51 | ||
52 | line_info (size_t l, size_t s, size_t e) | |
53 | : line_num (l), start_pos (s), end_pos (e) | |
54 | {} | |
55 | ||
56 | line_info () | |
57 | :line_num (0), start_pos (0), end_pos (0) | |
58 | {} | |
59 | }; | |
60 | ||
61 | /* The number of time this file has been accessed. This is used | |
62 | to designate which file cache to evict from the cache | |
63 | array. */ | |
64 | unsigned use_count; | |
65 | ||
f5ea989d DM |
66 | /* The file_path is the key for identifying a particular file in |
67 | the cache. | |
68 | For libcpp-using code, the underlying buffer for this field is | |
69 | owned by the corresponding _cpp_file within the cpp_reader. */ | |
7ecc3eb9 DS |
70 | const char *file_path; |
71 | ||
72 | FILE *fp; | |
73 | ||
74 | /* This points to the content of the file that we've read so | |
75 | far. */ | |
76 | char *data; | |
77 | ||
78 | /* The size of the DATA array above.*/ | |
79 | size_t size; | |
80 | ||
81 | /* The number of bytes read from the underlying file so far. This | |
82 | must be less (or equal) than SIZE above. */ | |
83 | size_t nb_read; | |
84 | ||
85 | /* The index of the beginning of the current line. */ | |
86 | size_t line_start_idx; | |
87 | ||
88 | /* The number of the previous line read. This starts at 1. Zero | |
89 | means we've read no line so far. */ | |
90 | size_t line_num; | |
91 | ||
92 | /* This is the total number of lines of the current file. At the | |
93 | moment, we try to get this information from the line map | |
94 | subsystem. Note that this is just a hint. When using the C++ | |
95 | front-end, this hint is correct because the input file is then | |
96 | completely tokenized before parsing starts; so the line map knows | |
97 | the number of lines before compilation really starts. For e.g, | |
98 | the C front-end, it can happen that we start emitting diagnostics | |
99 | before the line map has seen the end of the file. */ | |
100 | size_t total_lines; | |
101 | ||
c65236d6 DM |
102 | /* Could this file be missing a trailing newline on its final line? |
103 | Initially true (to cope with empty files), set to true/false | |
104 | as each line is read. */ | |
105 | bool missing_trailing_newline; | |
106 | ||
7ecc3eb9 DS |
107 | /* This is a record of the beginning and end of the lines we've seen |
108 | while reading the file. This is useful to avoid walking the data | |
109 | from the beginning when we are asked to read a line that is | |
110 | before LINE_START_IDX above. Note that the maximum size of this | |
111 | record is fcache_line_record_size, so that the memory consumption | |
112 | doesn't explode. We thus scale total_lines down to | |
113 | fcache_line_record_size. */ | |
114 | vec<line_info, va_heap> line_record; | |
115 | ||
116 | fcache (); | |
117 | ~fcache (); | |
118 | }; | |
447924ef JM |
119 | |
120 | /* Current position in real source file. */ | |
121 | ||
3edf64aa | 122 | location_t input_location = UNKNOWN_LOCATION; |
447924ef JM |
123 | |
124 | struct line_maps *line_table; | |
125 | ||
f87e22c5 DM |
126 | /* A stashed copy of "line_table" for use by selftest::line_table_test. |
127 | This needs to be a global so that it can be a GC root, and thus | |
128 | prevent the stashed copy from being garbage-collected if the GC runs | |
129 | during a line_table_test. */ | |
130 | ||
131 | struct line_maps *saved_line_table; | |
132 | ||
7ecc3eb9 DS |
133 | static fcache *fcache_tab; |
134 | static const size_t fcache_tab_size = 16; | |
135 | static const size_t fcache_buffer_size = 4 * 1024; | |
136 | static const size_t fcache_line_record_size = 100; | |
137 | ||
84756fd4 DS |
138 | /* Expand the source location LOC into a human readable location. If |
139 | LOC resolves to a builtin location, the file name of the readable | |
7eb918cc DS |
140 | location is set to the string "<built-in>". If EXPANSION_POINT_P is |
141 | TRUE and LOC is virtual, then it is resolved to the expansion | |
142 | point of the involved macro. Otherwise, it is resolved to the | |
c4ca1a09 DS |
143 | spelling location of the token. |
144 | ||
145 | When resolving to the spelling location of the token, if the | |
146 | resulting location is for a built-in location (that is, it has no | |
147 | associated line/column) in the context of a macro expansion, the | |
148 | returned location is the first one (while unwinding the macro | |
149 | location towards its expansion point) that is in real source | |
c471c6ed DM |
150 | code. |
151 | ||
152 | ASPECT controls which part of the location to use. */ | |
7eb918cc DS |
153 | |
154 | static expanded_location | |
155 | expand_location_1 (source_location loc, | |
c471c6ed DM |
156 | bool expansion_point_p, |
157 | enum location_aspect aspect) | |
447924ef JM |
158 | { |
159 | expanded_location xloc; | |
0e50b624 | 160 | const line_map_ordinary *map; |
c4ca1a09 | 161 | enum location_resolution_kind lrk = LRK_MACRO_EXPANSION_POINT; |
5368224f DC |
162 | tree block = NULL; |
163 | ||
164 | if (IS_ADHOC_LOC (loc)) | |
165 | { | |
166 | block = LOCATION_BLOCK (loc); | |
167 | loc = LOCATION_LOCUS (loc); | |
168 | } | |
c4ca1a09 DS |
169 | |
170 | memset (&xloc, 0, sizeof (xloc)); | |
84756fd4 | 171 | |
c4ca1a09 DS |
172 | if (loc >= RESERVED_LOCATION_COUNT) |
173 | { | |
174 | if (!expansion_point_p) | |
175 | { | |
176 | /* We want to resolve LOC to its spelling location. | |
177 | ||
178 | But if that spelling location is a reserved location that | |
179 | appears in the context of a macro expansion (like for a | |
180 | location for a built-in token), let's consider the first | |
181 | location (toward the expansion point) that is not reserved; | |
182 | that is, the first location that is in real source code. */ | |
183 | loc = linemap_unwind_to_first_non_reserved_loc (line_table, | |
0e50b624 | 184 | loc, NULL); |
c4ca1a09 DS |
185 | lrk = LRK_SPELLING_LOCATION; |
186 | } | |
c471c6ed DM |
187 | loc = linemap_resolve_location (line_table, loc, lrk, &map); |
188 | ||
189 | /* loc is now either in an ordinary map, or is a reserved location. | |
190 | If it is a compound location, the caret is in a spelling location, | |
191 | but the start/finish might still be a virtual location. | |
192 | Depending of what the caller asked for, we may need to recurse | |
193 | one level in order to resolve any virtual locations in the | |
194 | end-points. */ | |
195 | switch (aspect) | |
196 | { | |
197 | default: | |
198 | gcc_unreachable (); | |
199 | /* Fall through. */ | |
200 | case LOCATION_ASPECT_CARET: | |
201 | break; | |
202 | case LOCATION_ASPECT_START: | |
203 | { | |
204 | source_location start = get_start (loc); | |
205 | if (start != loc) | |
206 | return expand_location_1 (start, expansion_point_p, aspect); | |
207 | } | |
208 | break; | |
209 | case LOCATION_ASPECT_FINISH: | |
210 | { | |
211 | source_location finish = get_finish (loc); | |
212 | if (finish != loc) | |
213 | return expand_location_1 (finish, expansion_point_p, aspect); | |
214 | } | |
215 | break; | |
216 | } | |
c4ca1a09 DS |
217 | xloc = linemap_expand_location (line_table, map, loc); |
218 | } | |
84756fd4 | 219 | |
5368224f | 220 | xloc.data = block; |
447924ef | 221 | if (loc <= BUILTINS_LOCATION) |
84756fd4 DS |
222 | xloc.file = loc == UNKNOWN_LOCATION ? NULL : _("<built-in>"); |
223 | ||
447924ef JM |
224 | return xloc; |
225 | } | |
64a1a422 | 226 | |
7ecc3eb9 DS |
227 | /* Initialize the set of cache used for files accessed by caret |
228 | diagnostic. */ | |
229 | ||
230 | static void | |
231 | diagnostic_file_cache_init (void) | |
232 | { | |
233 | if (fcache_tab == NULL) | |
234 | fcache_tab = new fcache[fcache_tab_size]; | |
235 | } | |
236 | ||
592f32fa | 237 | /* Free the resources used by the set of cache used for files accessed |
7ecc3eb9 DS |
238 | by caret diagnostic. */ |
239 | ||
240 | void | |
241 | diagnostic_file_cache_fini (void) | |
242 | { | |
243 | if (fcache_tab) | |
244 | { | |
245 | delete [] (fcache_tab); | |
246 | fcache_tab = NULL; | |
247 | } | |
248 | } | |
249 | ||
250 | /* Return the total lines number that have been read so far by the | |
251 | line map (in the preprocessor) so far. For languages like C++ that | |
252 | entirely preprocess the input file before starting to parse, this | |
253 | equals the actual number of lines of the file. */ | |
254 | ||
255 | static size_t | |
256 | total_lines_num (const char *file_path) | |
257 | { | |
258 | size_t r = 0; | |
259 | source_location l = 0; | |
260 | if (linemap_get_file_highest_location (line_table, file_path, &l)) | |
261 | { | |
262 | gcc_assert (l >= RESERVED_LOCATION_COUNT); | |
263 | expanded_location xloc = expand_location (l); | |
264 | r = xloc.line; | |
265 | } | |
266 | return r; | |
267 | } | |
268 | ||
269 | /* Lookup the cache used for the content of a given file accessed by | |
270 | caret diagnostic. Return the found cached file, or NULL if no | |
271 | cached file was found. */ | |
272 | ||
273 | static fcache* | |
274 | lookup_file_in_cache_tab (const char *file_path) | |
275 | { | |
276 | if (file_path == NULL) | |
277 | return NULL; | |
278 | ||
279 | diagnostic_file_cache_init (); | |
280 | ||
281 | /* This will contain the found cached file. */ | |
282 | fcache *r = NULL; | |
283 | for (unsigned i = 0; i < fcache_tab_size; ++i) | |
284 | { | |
285 | fcache *c = &fcache_tab[i]; | |
286 | if (c->file_path && !strcmp (c->file_path, file_path)) | |
287 | { | |
288 | ++c->use_count; | |
289 | r = c; | |
290 | } | |
291 | } | |
292 | ||
293 | if (r) | |
294 | ++r->use_count; | |
295 | ||
296 | return r; | |
297 | } | |
298 | ||
f89b03b6 DM |
299 | /* Purge any mention of FILENAME from the cache of files used for |
300 | printing source code. For use in selftests when working | |
301 | with tempfiles. */ | |
302 | ||
303 | void | |
304 | diagnostics_file_cache_forcibly_evict_file (const char *file_path) | |
305 | { | |
306 | gcc_assert (file_path); | |
307 | ||
308 | fcache *r = lookup_file_in_cache_tab (file_path); | |
309 | if (!r) | |
310 | /* Not found. */ | |
311 | return; | |
312 | ||
313 | r->file_path = NULL; | |
314 | if (r->fp) | |
315 | fclose (r->fp); | |
316 | r->fp = NULL; | |
317 | r->nb_read = 0; | |
318 | r->line_start_idx = 0; | |
319 | r->line_num = 0; | |
320 | r->line_record.truncate (0); | |
321 | r->use_count = 0; | |
322 | r->total_lines = 0; | |
c65236d6 | 323 | r->missing_trailing_newline = true; |
f89b03b6 DM |
324 | } |
325 | ||
7ecc3eb9 DS |
326 | /* Return the file cache that has been less used, recently, or the |
327 | first empty one. If HIGHEST_USE_COUNT is non-null, | |
328 | *HIGHEST_USE_COUNT is set to the highest use count of the entries | |
329 | in the cache table. */ | |
330 | ||
331 | static fcache* | |
332 | evicted_cache_tab_entry (unsigned *highest_use_count) | |
333 | { | |
334 | diagnostic_file_cache_init (); | |
335 | ||
336 | fcache *to_evict = &fcache_tab[0]; | |
337 | unsigned huc = to_evict->use_count; | |
338 | for (unsigned i = 1; i < fcache_tab_size; ++i) | |
339 | { | |
340 | fcache *c = &fcache_tab[i]; | |
341 | bool c_is_empty = (c->file_path == NULL); | |
342 | ||
343 | if (c->use_count < to_evict->use_count | |
344 | || (to_evict->file_path && c_is_empty)) | |
345 | /* We evict C because it's either an entry with a lower use | |
346 | count or one that is empty. */ | |
347 | to_evict = c; | |
348 | ||
349 | if (huc < c->use_count) | |
350 | huc = c->use_count; | |
351 | ||
352 | if (c_is_empty) | |
353 | /* We've reached the end of the cache; subsequent elements are | |
354 | all empty. */ | |
355 | break; | |
356 | } | |
357 | ||
358 | if (highest_use_count) | |
359 | *highest_use_count = huc; | |
360 | ||
361 | return to_evict; | |
362 | } | |
363 | ||
364 | /* Create the cache used for the content of a given file to be | |
365 | accessed by caret diagnostic. This cache is added to an array of | |
366 | cache and can be retrieved by lookup_file_in_cache_tab. This | |
367 | function returns the created cache. Note that only the last | |
368 | fcache_tab_size files are cached. */ | |
369 | ||
370 | static fcache* | |
371 | add_file_to_cache_tab (const char *file_path) | |
372 | { | |
373 | ||
374 | FILE *fp = fopen (file_path, "r"); | |
317363b4 DS |
375 | if (fp == NULL) |
376 | return NULL; | |
7ecc3eb9 DS |
377 | |
378 | unsigned highest_use_count = 0; | |
379 | fcache *r = evicted_cache_tab_entry (&highest_use_count); | |
380 | r->file_path = file_path; | |
381 | if (r->fp) | |
382 | fclose (r->fp); | |
383 | r->fp = fp; | |
384 | r->nb_read = 0; | |
385 | r->line_start_idx = 0; | |
386 | r->line_num = 0; | |
387 | r->line_record.truncate (0); | |
388 | /* Ensure that this cache entry doesn't get evicted next time | |
389 | add_file_to_cache_tab is called. */ | |
390 | r->use_count = ++highest_use_count; | |
391 | r->total_lines = total_lines_num (file_path); | |
c65236d6 | 392 | r->missing_trailing_newline = true; |
7ecc3eb9 DS |
393 | |
394 | return r; | |
395 | } | |
396 | ||
397 | /* Lookup the cache used for the content of a given file accessed by | |
398 | caret diagnostic. If no cached file was found, create a new cache | |
399 | for this file, add it to the array of cached file and return | |
400 | it. */ | |
401 | ||
402 | static fcache* | |
403 | lookup_or_add_file_to_cache_tab (const char *file_path) | |
404 | { | |
405 | fcache *r = lookup_file_in_cache_tab (file_path); | |
406 | if (r == NULL) | |
407 | r = add_file_to_cache_tab (file_path); | |
408 | return r; | |
409 | } | |
410 | ||
411 | /* Default constructor for a cache of file used by caret | |
412 | diagnostic. */ | |
413 | ||
414 | fcache::fcache () | |
415 | : use_count (0), file_path (NULL), fp (NULL), data (0), | |
416 | size (0), nb_read (0), line_start_idx (0), line_num (0), | |
c65236d6 | 417 | total_lines (0), missing_trailing_newline (true) |
7ecc3eb9 DS |
418 | { |
419 | line_record.create (0); | |
420 | } | |
421 | ||
422 | /* Destructor for a cache of file used by caret diagnostic. */ | |
423 | ||
424 | fcache::~fcache () | |
425 | { | |
426 | if (fp) | |
427 | { | |
428 | fclose (fp); | |
429 | fp = NULL; | |
430 | } | |
431 | if (data) | |
432 | { | |
433 | XDELETEVEC (data); | |
434 | data = 0; | |
435 | } | |
436 | line_record.release (); | |
437 | } | |
438 | ||
439 | /* Returns TRUE iff the cache would need to be filled with data coming | |
440 | from the file. That is, either the cache is empty or full or the | |
441 | current line is empty. Note that if the cache is full, it would | |
442 | need to be extended and filled again. */ | |
443 | ||
444 | static bool | |
445 | needs_read (fcache *c) | |
446 | { | |
447 | return (c->nb_read == 0 | |
448 | || c->nb_read == c->size | |
449 | || (c->line_start_idx >= c->nb_read - 1)); | |
450 | } | |
451 | ||
452 | /* Return TRUE iff the cache is full and thus needs to be | |
453 | extended. */ | |
454 | ||
455 | static bool | |
456 | needs_grow (fcache *c) | |
457 | { | |
458 | return c->nb_read == c->size; | |
459 | } | |
460 | ||
461 | /* Grow the cache if it needs to be extended. */ | |
462 | ||
463 | static void | |
464 | maybe_grow (fcache *c) | |
9fec0042 | 465 | { |
7ecc3eb9 DS |
466 | if (!needs_grow (c)) |
467 | return; | |
468 | ||
469 | size_t size = c->size == 0 ? fcache_buffer_size : c->size * 2; | |
1adae327 | 470 | c->data = XRESIZEVEC (char, c->data, size); |
7ecc3eb9 DS |
471 | c->size = size; |
472 | } | |
9fec0042 | 473 | |
7ecc3eb9 DS |
474 | /* Read more data into the cache. Extends the cache if need be. |
475 | Returns TRUE iff new data could be read. */ | |
476 | ||
477 | static bool | |
478 | read_data (fcache *c) | |
479 | { | |
480 | if (feof (c->fp) || ferror (c->fp)) | |
481 | return false; | |
482 | ||
483 | maybe_grow (c); | |
484 | ||
485 | char * from = c->data + c->nb_read; | |
486 | size_t to_read = c->size - c->nb_read; | |
487 | size_t nb_read = fread (from, 1, to_read, c->fp); | |
488 | ||
489 | if (ferror (c->fp)) | |
490 | return false; | |
491 | ||
492 | c->nb_read += nb_read; | |
493 | return !!nb_read; | |
494 | } | |
495 | ||
496 | /* Read new data iff the cache needs to be filled with more data | |
497 | coming from the file FP. Return TRUE iff the cache was filled with | |
498 | mode data. */ | |
499 | ||
500 | static bool | |
501 | maybe_read_data (fcache *c) | |
502 | { | |
503 | if (!needs_read (c)) | |
504 | return false; | |
505 | return read_data (c); | |
506 | } | |
507 | ||
508 | /* Read a new line from file FP, using C as a cache for the data | |
509 | coming from the file. Upon successful completion, *LINE is set to | |
1adae327 BE |
510 | the beginning of the line found. *LINE points directly in the |
511 | line cache and is only valid until the next call of get_next_line. | |
7ecc3eb9 DS |
512 | *LINE_LEN is set to the length of the line. Note that the line |
513 | does not contain any terminal delimiter. This function returns | |
514 | true if some data was read or process from the cache, false | |
1adae327 BE |
515 | otherwise. Note that subsequent calls to get_next_line might |
516 | make the content of *LINE invalid. */ | |
7ecc3eb9 DS |
517 | |
518 | static bool | |
519 | get_next_line (fcache *c, char **line, ssize_t *line_len) | |
520 | { | |
521 | /* Fill the cache with data to process. */ | |
522 | maybe_read_data (c); | |
523 | ||
524 | size_t remaining_size = c->nb_read - c->line_start_idx; | |
525 | if (remaining_size == 0) | |
526 | /* There is no more data to process. */ | |
527 | return false; | |
528 | ||
529 | char *line_start = c->data + c->line_start_idx; | |
530 | ||
531 | char *next_line_start = NULL; | |
532 | size_t len = 0; | |
533 | char *line_end = (char *) memchr (line_start, '\n', remaining_size); | |
534 | if (line_end == NULL) | |
9fec0042 | 535 | { |
7ecc3eb9 DS |
536 | /* We haven't found the end-of-line delimiter in the cache. |
537 | Fill the cache with more data from the file and look for the | |
538 | '\n'. */ | |
539 | while (maybe_read_data (c)) | |
540 | { | |
541 | line_start = c->data + c->line_start_idx; | |
542 | remaining_size = c->nb_read - c->line_start_idx; | |
543 | line_end = (char *) memchr (line_start, '\n', remaining_size); | |
544 | if (line_end != NULL) | |
545 | { | |
546 | next_line_start = line_end + 1; | |
547 | break; | |
548 | } | |
549 | } | |
550 | if (line_end == NULL) | |
c65236d6 DM |
551 | { |
552 | /* We've loadded all the file into the cache and still no | |
553 | '\n'. Let's say the line ends up at one byte passed the | |
554 | end of the file. This is to stay consistent with the case | |
555 | of when the line ends up with a '\n' and line_end points to | |
556 | that terminal '\n'. That consistency is useful below in | |
557 | the len calculation. */ | |
558 | line_end = c->data + c->nb_read ; | |
559 | c->missing_trailing_newline = true; | |
560 | } | |
561 | else | |
562 | c->missing_trailing_newline = false; | |
9fec0042 | 563 | } |
7ecc3eb9 | 564 | else |
c65236d6 DM |
565 | { |
566 | next_line_start = line_end + 1; | |
567 | c->missing_trailing_newline = false; | |
568 | } | |
7ecc3eb9 DS |
569 | |
570 | if (ferror (c->fp)) | |
1adae327 | 571 | return false; |
7ecc3eb9 DS |
572 | |
573 | /* At this point, we've found the end of the of line. It either | |
574 | points to the '\n' or to one byte after the last byte of the | |
575 | file. */ | |
576 | gcc_assert (line_end != NULL); | |
9fec0042 | 577 | |
7ecc3eb9 DS |
578 | len = line_end - line_start; |
579 | ||
580 | if (c->line_start_idx < c->nb_read) | |
581 | *line = line_start; | |
582 | ||
583 | ++c->line_num; | |
584 | ||
585 | /* Before we update our line record, make sure the hint about the | |
586 | total number of lines of the file is correct. If it's not, then | |
587 | we give up recording line boundaries from now on. */ | |
588 | bool update_line_record = true; | |
589 | if (c->line_num > c->total_lines) | |
590 | update_line_record = false; | |
591 | ||
592 | /* Now update our line record so that re-reading lines from the | |
593 | before c->line_start_idx is faster. */ | |
594 | if (update_line_record | |
595 | && c->line_record.length () < fcache_line_record_size) | |
596 | { | |
597 | /* If the file lines fits in the line record, we just record all | |
598 | its lines ...*/ | |
599 | if (c->total_lines <= fcache_line_record_size | |
600 | && c->line_num > c->line_record.length ()) | |
601 | c->line_record.safe_push (fcache::line_info (c->line_num, | |
602 | c->line_start_idx, | |
603 | line_end - c->data)); | |
604 | else if (c->total_lines > fcache_line_record_size) | |
605 | { | |
606 | /* ... otherwise, we just scale total_lines down to | |
607 | (fcache_line_record_size lines. */ | |
608 | size_t n = (c->line_num * fcache_line_record_size) / c->total_lines; | |
609 | if (c->line_record.length () == 0 | |
610 | || n >= c->line_record.length ()) | |
611 | c->line_record.safe_push (fcache::line_info (c->line_num, | |
612 | c->line_start_idx, | |
613 | line_end - c->data)); | |
614 | } | |
615 | } | |
616 | ||
617 | /* Update c->line_start_idx so that it points to the next line to be | |
618 | read. */ | |
619 | if (next_line_start) | |
620 | c->line_start_idx = next_line_start - c->data; | |
621 | else | |
622 | /* We didn't find any terminal '\n'. Let's consider that the end | |
623 | of line is the end of the data in the cache. The next | |
624 | invocation of get_next_line will either read more data from the | |
625 | underlying file or return false early because we've reached the | |
626 | end of the file. */ | |
627 | c->line_start_idx = c->nb_read; | |
628 | ||
629 | *line_len = len; | |
630 | ||
631 | return true; | |
632 | } | |
633 | ||
7ecc3eb9 DS |
634 | /* Consume the next bytes coming from the cache (or from its |
635 | underlying file if there are remaining unread bytes in the file) | |
636 | until we reach the next end-of-line (or end-of-file). There is no | |
637 | copying from the cache involved. Return TRUE upon successful | |
638 | completion. */ | |
639 | ||
640 | static bool | |
641 | goto_next_line (fcache *cache) | |
642 | { | |
643 | char *l; | |
644 | ssize_t len; | |
645 | ||
646 | return get_next_line (cache, &l, &len); | |
647 | } | |
648 | ||
649 | /* Read an arbitrary line number LINE_NUM from the file cached in C. | |
1adae327 BE |
650 | If the line was read successfully, *LINE points to the beginning |
651 | of the line in the file cache and *LINE_LEN is the length of the | |
652 | line. *LINE is not nul-terminated, but may contain zero bytes. | |
653 | *LINE is only valid until the next call of read_line_num. | |
7ecc3eb9 DS |
654 | This function returns bool if a line was read. */ |
655 | ||
656 | static bool | |
657 | read_line_num (fcache *c, size_t line_num, | |
1adae327 | 658 | char **line, ssize_t *line_len) |
7ecc3eb9 DS |
659 | { |
660 | gcc_assert (line_num > 0); | |
661 | ||
662 | if (line_num <= c->line_num) | |
9789a912 | 663 | { |
7ecc3eb9 DS |
664 | /* We've been asked to read lines that are before c->line_num. |
665 | So lets use our line record (if it's not empty) to try to | |
666 | avoid re-reading the file from the beginning again. */ | |
7f4d640c | 667 | |
7ecc3eb9 | 668 | if (c->line_record.is_empty ()) |
9fec0042 | 669 | { |
7ecc3eb9 DS |
670 | c->line_start_idx = 0; |
671 | c->line_num = 0; | |
672 | } | |
673 | else | |
674 | { | |
675 | fcache::line_info *i = NULL; | |
676 | if (c->total_lines <= fcache_line_record_size) | |
677 | { | |
678 | /* In languages where the input file is not totally | |
679 | preprocessed up front, the c->total_lines hint | |
680 | can be smaller than the number of lines of the | |
681 | file. In that case, only the first | |
682 | c->total_lines have been recorded. | |
683 | ||
684 | Otherwise, the first c->total_lines we've read have | |
685 | their start/end recorded here. */ | |
686 | i = (line_num <= c->total_lines) | |
687 | ? &c->line_record[line_num - 1] | |
688 | : &c->line_record[c->total_lines - 1]; | |
689 | gcc_assert (i->line_num <= line_num); | |
690 | } | |
691 | else | |
692 | { | |
693 | /* So the file had more lines than our line record | |
694 | size. Thus the number of lines we've recorded has | |
695 | been scaled down to fcache_line_reacord_size. Let's | |
696 | pick the start/end of the recorded line that is | |
697 | closest to line_num. */ | |
698 | size_t n = (line_num <= c->total_lines) | |
699 | ? line_num * fcache_line_record_size / c->total_lines | |
700 | : c ->line_record.length () - 1; | |
701 | if (n < c->line_record.length ()) | |
702 | { | |
703 | i = &c->line_record[n]; | |
704 | gcc_assert (i->line_num <= line_num); | |
705 | } | |
706 | } | |
707 | ||
708 | if (i && i->line_num == line_num) | |
709 | { | |
1adae327 BE |
710 | /* We have the start/end of the line. */ |
711 | *line = c->data + i->start_pos; | |
712 | *line_len = i->end_pos - i->start_pos; | |
7ecc3eb9 DS |
713 | return true; |
714 | } | |
715 | ||
716 | if (i) | |
717 | { | |
718 | c->line_start_idx = i->start_pos; | |
719 | c->line_num = i->line_num - 1; | |
720 | } | |
721 | else | |
722 | { | |
723 | c->line_start_idx = 0; | |
724 | c->line_num = 0; | |
725 | } | |
9fec0042 | 726 | } |
9fec0042 | 727 | } |
7ecc3eb9 DS |
728 | |
729 | /* Let's walk from line c->line_num up to line_num - 1, without | |
730 | copying any line. */ | |
731 | while (c->line_num < line_num - 1) | |
732 | if (!goto_next_line (c)) | |
733 | return false; | |
734 | ||
735 | /* The line we want is the next one. Let's read and copy it back to | |
736 | the caller. */ | |
1adae327 | 737 | return get_next_line (c, line, line_len); |
9fec0042 MLI |
738 | } |
739 | ||
1adae327 BE |
740 | /* Return the physical source line that corresponds to FILE_PATH/LINE. |
741 | The line is not nul-terminated. The returned pointer is only | |
742 | valid until the next call of location_get_source_line. | |
743 | Note that the line can contain several null characters, | |
7761dfbe DM |
744 | so the returned value's length has the actual length of the line. |
745 | If the function fails, a NULL char_span is returned. */ | |
9fec0042 | 746 | |
7761dfbe DM |
747 | char_span |
748 | location_get_source_line (const char *file_path, int line) | |
9fec0042 | 749 | { |
ac2a97db | 750 | char *buffer = NULL; |
1adae327 | 751 | ssize_t len; |
7ecc3eb9 | 752 | |
31bdd08a | 753 | if (line == 0) |
7761dfbe | 754 | return char_span (NULL, 0); |
367c8286 | 755 | |
31bdd08a | 756 | fcache *c = lookup_or_add_file_to_cache_tab (file_path); |
367c8286 | 757 | if (c == NULL) |
7761dfbe | 758 | return char_span (NULL, 0); |
367c8286 | 759 | |
31bdd08a | 760 | bool read = read_line_num (c, line, &buffer, &len); |
7761dfbe DM |
761 | if (!read) |
762 | return char_span (NULL, 0); | |
9fec0042 | 763 | |
7761dfbe | 764 | return char_span (buffer, len); |
9fec0042 MLI |
765 | } |
766 | ||
c65236d6 DM |
767 | /* Determine if FILE_PATH missing a trailing newline on its final line. |
768 | Only valid to call once all of the file has been loaded, by | |
769 | requesting a line number beyond the end of the file. */ | |
770 | ||
771 | bool | |
772 | location_missing_trailing_newline (const char *file_path) | |
773 | { | |
774 | fcache *c = lookup_or_add_file_to_cache_tab (file_path); | |
775 | if (c == NULL) | |
776 | return false; | |
777 | ||
778 | return c->missing_trailing_newline; | |
779 | } | |
780 | ||
c468587a DS |
781 | /* Test if the location originates from the spelling location of a |
782 | builtin-tokens. That is, return TRUE if LOC is a (possibly | |
783 | virtual) location of a built-in token that appears in the expansion | |
784 | list of a macro. Please note that this function also works on | |
785 | tokens that result from built-in tokens. For instance, the | |
786 | function would return true if passed a token "4" that is the result | |
787 | of the expansion of the built-in __LINE__ macro. */ | |
788 | bool | |
789 | is_location_from_builtin_token (source_location loc) | |
790 | { | |
0e50b624 | 791 | const line_map_ordinary *map = NULL; |
c468587a DS |
792 | loc = linemap_resolve_location (line_table, loc, |
793 | LRK_SPELLING_LOCATION, &map); | |
794 | return loc == BUILTINS_LOCATION; | |
795 | } | |
796 | ||
7eb918cc DS |
797 | /* Expand the source location LOC into a human readable location. If |
798 | LOC is virtual, it resolves to the expansion point of the involved | |
799 | macro. If LOC resolves to a builtin location, the file name of the | |
800 | readable location is set to the string "<built-in>". */ | |
801 | ||
802 | expanded_location | |
803 | expand_location (source_location loc) | |
804 | { | |
c471c6ed DM |
805 | return expand_location_1 (loc, /*expansion_point_p=*/true, |
806 | LOCATION_ASPECT_CARET); | |
7eb918cc DS |
807 | } |
808 | ||
809 | /* Expand the source location LOC into a human readable location. If | |
810 | LOC is virtual, it resolves to the expansion location of the | |
811 | relevant macro. If LOC resolves to a builtin location, the file | |
812 | name of the readable location is set to the string | |
813 | "<built-in>". */ | |
814 | ||
815 | expanded_location | |
0d48e877 DM |
816 | expand_location_to_spelling_point (source_location loc, |
817 | enum location_aspect aspect) | |
7eb918cc | 818 | { |
0d48e877 | 819 | return expand_location_1 (loc, /*expansion_point_p=*/false, aspect); |
7eb918cc DS |
820 | } |
821 | ||
8a645150 DM |
822 | /* The rich_location class within libcpp requires a way to expand |
823 | source_location instances, and relies on the client code | |
824 | providing a symbol named | |
825 | linemap_client_expand_location_to_spelling_point | |
826 | to do this. | |
827 | ||
828 | This is the implementation for libcommon.a (all host binaries), | |
c471c6ed | 829 | which simply calls into expand_location_1. */ |
8a645150 DM |
830 | |
831 | expanded_location | |
c471c6ed DM |
832 | linemap_client_expand_location_to_spelling_point (source_location loc, |
833 | enum location_aspect aspect) | |
8a645150 | 834 | { |
c471c6ed | 835 | return expand_location_1 (loc, /*expansion_point_p=*/false, aspect); |
8a645150 DM |
836 | } |
837 | ||
838 | ||
e1f0c178 MLI |
839 | /* If LOCATION is in a system header and if it is a virtual location for |
840 | a token coming from the expansion of a macro, unwind it to the | |
841 | location of the expansion point of the macro. Otherwise, just return | |
70dc395a DS |
842 | LOCATION. |
843 | ||
844 | This is used for instance when we want to emit diagnostics about a | |
e1f0c178 MLI |
845 | token that may be located in a macro that is itself defined in a |
846 | system header, for example, for the NULL macro. In such a case, if | |
847 | LOCATION were passed directly to diagnostic functions such as | |
848 | warning_at, the diagnostic would be suppressed (unless | |
849 | -Wsystem-headers). */ | |
70dc395a DS |
850 | |
851 | source_location | |
852 | expansion_point_location_if_in_system_header (source_location location) | |
853 | { | |
854 | if (in_system_header_at (location)) | |
855 | location = linemap_resolve_location (line_table, location, | |
856 | LRK_MACRO_EXPANSION_POINT, | |
857 | NULL); | |
858 | return location; | |
859 | } | |
7eb918cc | 860 | |
79ce98bc MP |
861 | /* If LOCATION is a virtual location for a token coming from the expansion |
862 | of a macro, unwind to the location of the expansion point of the macro. */ | |
863 | ||
864 | source_location | |
865 | expansion_point_location (source_location location) | |
866 | { | |
867 | return linemap_resolve_location (line_table, location, | |
868 | LRK_MACRO_EXPANSION_POINT, NULL); | |
869 | } | |
870 | ||
a01fc549 DM |
871 | /* Construct a location with caret at CARET, ranging from START to |
872 | finish e.g. | |
873 | ||
874 | 11111111112 | |
875 | 12345678901234567890 | |
876 | 522 | |
877 | 523 return foo + bar; | |
878 | ~~~~^~~~~ | |
879 | 524 | |
880 | ||
881 | The location's caret is at the "+", line 523 column 15, but starts | |
882 | earlier, at the "f" of "foo" at column 11. The finish is at the "r" | |
883 | of "bar" at column 19. */ | |
884 | ||
885 | location_t | |
886 | make_location (location_t caret, location_t start, location_t finish) | |
887 | { | |
888 | location_t pure_loc = get_pure_location (caret); | |
889 | source_range src_range; | |
9144eabb DM |
890 | src_range.m_start = get_start (start); |
891 | src_range.m_finish = get_finish (finish); | |
a01fc549 DM |
892 | location_t combined_loc = COMBINE_LOCATION_DATA (line_table, |
893 | pure_loc, | |
894 | src_range, | |
895 | NULL); | |
896 | return combined_loc; | |
897 | } | |
898 | ||
a32c8316 MP |
899 | /* Same as above, but taking a source range rather than two locations. */ |
900 | ||
901 | location_t | |
902 | make_location (location_t caret, source_range src_range) | |
903 | { | |
904 | location_t pure_loc = get_pure_location (caret); | |
905 | return COMBINE_LOCATION_DATA (line_table, pure_loc, src_range, NULL); | |
906 | } | |
907 | ||
64a1a422 TT |
908 | #define ONE_K 1024 |
909 | #define ONE_M (ONE_K * ONE_K) | |
910 | ||
911 | /* Display a number as an integer multiple of either: | |
912 | - 1024, if said integer is >= to 10 K (in base 2) | |
913 | - 1024 * 1024, if said integer is >= 10 M in (base 2) | |
914 | */ | |
915 | #define SCALE(x) ((unsigned long) ((x) < 10 * ONE_K \ | |
916 | ? (x) \ | |
917 | : ((x) < 10 * ONE_M \ | |
918 | ? (x) / ONE_K \ | |
919 | : (x) / ONE_M))) | |
920 | ||
921 | /* For a given integer, display either: | |
922 | - the character 'k', if the number is higher than 10 K (in base 2) | |
923 | but strictly lower than 10 M (in base 2) | |
924 | - the character 'M' if the number is higher than 10 M (in base2) | |
925 | - the charcter ' ' if the number is strictly lower than 10 K */ | |
926 | #define STAT_LABEL(x) ((x) < 10 * ONE_K ? ' ' : ((x) < 10 * ONE_M ? 'k' : 'M')) | |
927 | ||
928 | /* Display an integer amount as multiple of 1K or 1M (in base 2). | |
5764ee3c | 929 | Display the correct unit (either k, M, or ' ') after the amount, as |
64a1a422 TT |
930 | well. */ |
931 | #define FORMAT_AMOUNT(size) SCALE (size), STAT_LABEL (size) | |
932 | ||
933 | /* Dump statistics to stderr about the memory usage of the line_table | |
934 | set of line maps. This also displays some statistics about macro | |
935 | expansion. */ | |
936 | ||
937 | void | |
938 | dump_line_table_statistics (void) | |
939 | { | |
940 | struct linemap_stats s; | |
d17687f6 | 941 | long total_used_map_size, |
64a1a422 TT |
942 | macro_maps_size, |
943 | total_allocated_map_size; | |
944 | ||
945 | memset (&s, 0, sizeof (s)); | |
946 | ||
947 | linemap_get_statistics (line_table, &s); | |
948 | ||
949 | macro_maps_size = s.macro_maps_used_size | |
950 | + s.macro_maps_locations_size; | |
951 | ||
952 | total_allocated_map_size = s.ordinary_maps_allocated_size | |
953 | + s.macro_maps_allocated_size | |
954 | + s.macro_maps_locations_size; | |
955 | ||
956 | total_used_map_size = s.ordinary_maps_used_size | |
957 | + s.macro_maps_used_size | |
958 | + s.macro_maps_locations_size; | |
959 | ||
d17687f6 | 960 | fprintf (stderr, "Number of expanded macros: %5ld\n", |
64a1a422 TT |
961 | s.num_expanded_macros); |
962 | if (s.num_expanded_macros != 0) | |
d17687f6 | 963 | fprintf (stderr, "Average number of tokens per macro expansion: %5ld\n", |
64a1a422 TT |
964 | s.num_macro_tokens / s.num_expanded_macros); |
965 | fprintf (stderr, | |
966 | "\nLine Table allocations during the " | |
967 | "compilation process\n"); | |
d17687f6 | 968 | fprintf (stderr, "Number of ordinary maps used: %5ld%c\n", |
64a1a422 TT |
969 | SCALE (s.num_ordinary_maps_used), |
970 | STAT_LABEL (s.num_ordinary_maps_used)); | |
d17687f6 | 971 | fprintf (stderr, "Ordinary map used size: %5ld%c\n", |
64a1a422 TT |
972 | SCALE (s.ordinary_maps_used_size), |
973 | STAT_LABEL (s.ordinary_maps_used_size)); | |
d17687f6 | 974 | fprintf (stderr, "Number of ordinary maps allocated: %5ld%c\n", |
64a1a422 TT |
975 | SCALE (s.num_ordinary_maps_allocated), |
976 | STAT_LABEL (s.num_ordinary_maps_allocated)); | |
d17687f6 | 977 | fprintf (stderr, "Ordinary maps allocated size: %5ld%c\n", |
64a1a422 TT |
978 | SCALE (s.ordinary_maps_allocated_size), |
979 | STAT_LABEL (s.ordinary_maps_allocated_size)); | |
d17687f6 | 980 | fprintf (stderr, "Number of macro maps used: %5ld%c\n", |
64a1a422 TT |
981 | SCALE (s.num_macro_maps_used), |
982 | STAT_LABEL (s.num_macro_maps_used)); | |
d17687f6 | 983 | fprintf (stderr, "Macro maps used size: %5ld%c\n", |
64a1a422 TT |
984 | SCALE (s.macro_maps_used_size), |
985 | STAT_LABEL (s.macro_maps_used_size)); | |
d17687f6 | 986 | fprintf (stderr, "Macro maps locations size: %5ld%c\n", |
64a1a422 TT |
987 | SCALE (s.macro_maps_locations_size), |
988 | STAT_LABEL (s.macro_maps_locations_size)); | |
d17687f6 | 989 | fprintf (stderr, "Macro maps size: %5ld%c\n", |
64a1a422 TT |
990 | SCALE (macro_maps_size), |
991 | STAT_LABEL (macro_maps_size)); | |
d17687f6 | 992 | fprintf (stderr, "Duplicated maps locations size: %5ld%c\n", |
64a1a422 TT |
993 | SCALE (s.duplicated_macro_maps_locations_size), |
994 | STAT_LABEL (s.duplicated_macro_maps_locations_size)); | |
d17687f6 | 995 | fprintf (stderr, "Total allocated maps size: %5ld%c\n", |
64a1a422 TT |
996 | SCALE (total_allocated_map_size), |
997 | STAT_LABEL (total_allocated_map_size)); | |
d17687f6 | 998 | fprintf (stderr, "Total used maps size: %5ld%c\n", |
64a1a422 TT |
999 | SCALE (total_used_map_size), |
1000 | STAT_LABEL (total_used_map_size)); | |
ee015909 DM |
1001 | fprintf (stderr, "Ad-hoc table size: %5ld%c\n", |
1002 | SCALE (s.adhoc_table_size), | |
1003 | STAT_LABEL (s.adhoc_table_size)); | |
1004 | fprintf (stderr, "Ad-hoc table entries used: %5ld\n", | |
1005 | s.adhoc_table_entries_used); | |
ebedc9a3 DM |
1006 | fprintf (stderr, "optimized_ranges: %i\n", |
1007 | line_table->num_optimized_ranges); | |
1008 | fprintf (stderr, "unoptimized_ranges: %i\n", | |
1009 | line_table->num_unoptimized_ranges); | |
ee015909 | 1010 | |
64a1a422 TT |
1011 | fprintf (stderr, "\n"); |
1012 | } | |
ba4ad400 DM |
1013 | |
1014 | /* Get location one beyond the final location in ordinary map IDX. */ | |
1015 | ||
1016 | static source_location | |
1017 | get_end_location (struct line_maps *set, unsigned int idx) | |
1018 | { | |
1019 | if (idx == LINEMAPS_ORDINARY_USED (set) - 1) | |
1020 | return set->highest_location; | |
1021 | ||
1022 | struct line_map *next_map = LINEMAPS_ORDINARY_MAP_AT (set, idx + 1); | |
1023 | return MAP_START_LOCATION (next_map); | |
1024 | } | |
1025 | ||
1026 | /* Helper function for write_digit_row. */ | |
1027 | ||
1028 | static void | |
1029 | write_digit (FILE *stream, int digit) | |
1030 | { | |
1031 | fputc ('0' + (digit % 10), stream); | |
1032 | } | |
1033 | ||
1034 | /* Helper function for dump_location_info. | |
1035 | Write a row of numbers to STREAM, numbering a source line, | |
1036 | giving the units, tens, hundreds etc of the column number. */ | |
1037 | ||
1038 | static void | |
1039 | write_digit_row (FILE *stream, int indent, | |
ebedc9a3 | 1040 | const line_map_ordinary *map, |
ba4ad400 DM |
1041 | source_location loc, int max_col, int divisor) |
1042 | { | |
1043 | fprintf (stream, "%*c", indent, ' '); | |
1044 | fprintf (stream, "|"); | |
1045 | for (int column = 1; column < max_col; column++) | |
1046 | { | |
ebedc9a3 | 1047 | source_location column_loc = loc + (column << map->m_range_bits); |
ba4ad400 DM |
1048 | write_digit (stream, column_loc / divisor); |
1049 | } | |
1050 | fprintf (stream, "\n"); | |
1051 | } | |
1052 | ||
1053 | /* Write a half-closed (START) / half-open (END) interval of | |
1054 | source_location to STREAM. */ | |
1055 | ||
1056 | static void | |
1057 | dump_location_range (FILE *stream, | |
1058 | source_location start, source_location end) | |
1059 | { | |
1060 | fprintf (stream, | |
1061 | " source_location interval: %u <= loc < %u\n", | |
1062 | start, end); | |
1063 | } | |
1064 | ||
1065 | /* Write a labelled description of a half-closed (START) / half-open (END) | |
1066 | interval of source_location to STREAM. */ | |
1067 | ||
1068 | static void | |
1069 | dump_labelled_location_range (FILE *stream, | |
1070 | const char *name, | |
1071 | source_location start, source_location end) | |
1072 | { | |
1073 | fprintf (stream, "%s\n", name); | |
1074 | dump_location_range (stream, start, end); | |
1075 | fprintf (stream, "\n"); | |
1076 | } | |
1077 | ||
1078 | /* Write a visualization of the locations in the line_table to STREAM. */ | |
1079 | ||
1080 | void | |
1081 | dump_location_info (FILE *stream) | |
1082 | { | |
1083 | /* Visualize the reserved locations. */ | |
1084 | dump_labelled_location_range (stream, "RESERVED LOCATIONS", | |
1085 | 0, RESERVED_LOCATION_COUNT); | |
1086 | ||
1087 | /* Visualize the ordinary line_map instances, rendering the sources. */ | |
1088 | for (unsigned int idx = 0; idx < LINEMAPS_ORDINARY_USED (line_table); idx++) | |
1089 | { | |
1090 | source_location end_location = get_end_location (line_table, idx); | |
1091 | /* half-closed: doesn't include this one. */ | |
1092 | ||
0e50b624 DM |
1093 | const line_map_ordinary *map |
1094 | = LINEMAPS_ORDINARY_MAP_AT (line_table, idx); | |
ba4ad400 DM |
1095 | fprintf (stream, "ORDINARY MAP: %i\n", idx); |
1096 | dump_location_range (stream, | |
1097 | MAP_START_LOCATION (map), end_location); | |
1098 | fprintf (stream, " file: %s\n", ORDINARY_MAP_FILE_NAME (map)); | |
1099 | fprintf (stream, " starting at line: %i\n", | |
1100 | ORDINARY_MAP_STARTING_LINE_NUMBER (map)); | |
ebedc9a3 DM |
1101 | fprintf (stream, " column and range bits: %i\n", |
1102 | map->m_column_and_range_bits); | |
ba4ad400 | 1103 | fprintf (stream, " column bits: %i\n", |
ebedc9a3 DM |
1104 | map->m_column_and_range_bits - map->m_range_bits); |
1105 | fprintf (stream, " range bits: %i\n", | |
1106 | map->m_range_bits); | |
ba4ad400 DM |
1107 | |
1108 | /* Render the span of source lines that this "map" covers. */ | |
1109 | for (source_location loc = MAP_START_LOCATION (map); | |
1110 | loc < end_location; | |
ebedc9a3 | 1111 | loc += (1 << map->m_range_bits) ) |
ba4ad400 | 1112 | { |
ebedc9a3 DM |
1113 | gcc_assert (pure_location_p (line_table, loc) ); |
1114 | ||
ba4ad400 DM |
1115 | expanded_location exploc |
1116 | = linemap_expand_location (line_table, map, loc); | |
1117 | ||
01512446 | 1118 | if (exploc.column == 0) |
ba4ad400 DM |
1119 | { |
1120 | /* Beginning of a new source line: draw the line. */ | |
1121 | ||
7761dfbe DM |
1122 | char_span line_text = location_get_source_line (exploc.file, |
1123 | exploc.line); | |
ba4ad400 DM |
1124 | if (!line_text) |
1125 | break; | |
1126 | fprintf (stream, | |
1127 | "%s:%3i|loc:%5i|%.*s\n", | |
1128 | exploc.file, exploc.line, | |
1129 | loc, | |
7761dfbe | 1130 | (int)line_text.length (), line_text.get_buffer ()); |
ba4ad400 DM |
1131 | |
1132 | /* "loc" is at column 0, which means "the whole line". | |
1133 | Render the locations *within* the line, by underlining | |
1134 | it, showing the source_location numeric values | |
1135 | at each column. */ | |
7761dfbe DM |
1136 | size_t max_col = (1 << map->m_column_and_range_bits) - 1; |
1137 | if (max_col > line_text.length ()) | |
1138 | max_col = line_text.length () + 1; | |
ba4ad400 DM |
1139 | |
1140 | int indent = 14 + strlen (exploc.file); | |
1141 | ||
1142 | /* Thousands. */ | |
1143 | if (end_location > 999) | |
ebedc9a3 | 1144 | write_digit_row (stream, indent, map, loc, max_col, 1000); |
ba4ad400 DM |
1145 | |
1146 | /* Hundreds. */ | |
1147 | if (end_location > 99) | |
ebedc9a3 | 1148 | write_digit_row (stream, indent, map, loc, max_col, 100); |
ba4ad400 DM |
1149 | |
1150 | /* Tens. */ | |
ebedc9a3 | 1151 | write_digit_row (stream, indent, map, loc, max_col, 10); |
ba4ad400 DM |
1152 | |
1153 | /* Units. */ | |
ebedc9a3 | 1154 | write_digit_row (stream, indent, map, loc, max_col, 1); |
ba4ad400 DM |
1155 | } |
1156 | } | |
1157 | fprintf (stream, "\n"); | |
1158 | } | |
1159 | ||
1160 | /* Visualize unallocated values. */ | |
1161 | dump_labelled_location_range (stream, "UNALLOCATED LOCATIONS", | |
1162 | line_table->highest_location, | |
1163 | LINEMAPS_MACRO_LOWEST_LOCATION (line_table)); | |
1164 | ||
1165 | /* Visualize the macro line_map instances, rendering the sources. */ | |
1166 | for (unsigned int i = 0; i < LINEMAPS_MACRO_USED (line_table); i++) | |
1167 | { | |
1168 | /* Each macro map that is allocated owns source_location values | |
1169 | that are *lower* that the one before them. | |
1170 | Hence it's meaningful to view them either in order of ascending | |
1171 | source locations, or in order of ascending macro map index. */ | |
1172 | const bool ascending_source_locations = true; | |
1173 | unsigned int idx = (ascending_source_locations | |
1174 | ? (LINEMAPS_MACRO_USED (line_table) - (i + 1)) | |
1175 | : i); | |
0e50b624 | 1176 | const line_map_macro *map = LINEMAPS_MACRO_MAP_AT (line_table, idx); |
ba4ad400 DM |
1177 | fprintf (stream, "MACRO %i: %s (%u tokens)\n", |
1178 | idx, | |
1179 | linemap_map_get_macro_name (map), | |
1180 | MACRO_MAP_NUM_MACRO_TOKENS (map)); | |
1181 | dump_location_range (stream, | |
1182 | map->start_location, | |
1183 | (map->start_location | |
1184 | + MACRO_MAP_NUM_MACRO_TOKENS (map))); | |
1185 | inform (MACRO_MAP_EXPANSION_POINT_LOCATION (map), | |
1186 | "expansion point is location %i", | |
1187 | MACRO_MAP_EXPANSION_POINT_LOCATION (map)); | |
1188 | fprintf (stream, " map->start_location: %u\n", | |
1189 | map->start_location); | |
1190 | ||
1191 | fprintf (stream, " macro_locations:\n"); | |
1192 | for (unsigned int i = 0; i < MACRO_MAP_NUM_MACRO_TOKENS (map); i++) | |
1193 | { | |
1194 | source_location x = MACRO_MAP_LOCATIONS (map)[2 * i]; | |
1195 | source_location y = MACRO_MAP_LOCATIONS (map)[(2 * i) + 1]; | |
1196 | ||
1197 | /* linemap_add_macro_token encodes token numbers in an expansion | |
1198 | by putting them after MAP_START_LOCATION. */ | |
1199 | ||
1200 | /* I'm typically seeing 4 uninitialized entries at the end of | |
1201 | 0xafafafaf. | |
1202 | This appears to be due to macro.c:replace_args | |
1203 | adding 2 extra args for padding tokens; presumably there may | |
1204 | be a leading and/or trailing padding token injected, | |
1205 | each for 2 more location slots. | |
1206 | This would explain there being up to 4 source_locations slots | |
1207 | that may be uninitialized. */ | |
1208 | ||
1209 | fprintf (stream, " %u: %u, %u\n", | |
1210 | i, | |
1211 | x, | |
1212 | y); | |
1213 | if (x == y) | |
1214 | { | |
1215 | if (x < MAP_START_LOCATION (map)) | |
1216 | inform (x, "token %u has x-location == y-location == %u", i, x); | |
1217 | else | |
1218 | fprintf (stream, | |
1219 | "x-location == y-location == %u encodes token # %u\n", | |
1220 | x, x - MAP_START_LOCATION (map)); | |
1221 | } | |
1222 | else | |
1223 | { | |
1224 | inform (x, "token %u has x-location == %u", i, x); | |
1225 | inform (x, "token %u has y-location == %u", i, y); | |
1226 | } | |
1227 | } | |
1228 | fprintf (stream, "\n"); | |
1229 | } | |
1230 | ||
1231 | /* It appears that MAX_SOURCE_LOCATION itself is never assigned to a | |
1232 | macro map, presumably due to an off-by-one error somewhere | |
1233 | between the logic in linemap_enter_macro and | |
1234 | LINEMAPS_MACRO_LOWEST_LOCATION. */ | |
1235 | dump_labelled_location_range (stream, "MAX_SOURCE_LOCATION", | |
1236 | MAX_SOURCE_LOCATION, | |
1237 | MAX_SOURCE_LOCATION + 1); | |
1238 | ||
1239 | /* Visualize ad-hoc values. */ | |
1240 | dump_labelled_location_range (stream, "AD-HOC LOCATIONS", | |
1241 | MAX_SOURCE_LOCATION + 1, UINT_MAX); | |
1242 | } | |
d9b950dd | 1243 | |
88fa5555 DM |
1244 | /* string_concat's constructor. */ |
1245 | ||
1246 | string_concat::string_concat (int num, location_t *locs) | |
1247 | : m_num (num) | |
1248 | { | |
1249 | m_locs = ggc_vec_alloc <location_t> (num); | |
1250 | for (int i = 0; i < num; i++) | |
1251 | m_locs[i] = locs[i]; | |
1252 | } | |
1253 | ||
1254 | /* string_concat_db's constructor. */ | |
1255 | ||
1256 | string_concat_db::string_concat_db () | |
1257 | { | |
1258 | m_table = hash_map <location_hash, string_concat *>::create_ggc (64); | |
1259 | } | |
1260 | ||
1261 | /* Record that a string concatenation occurred, covering NUM | |
1262 | string literal tokens. LOCS is an array of size NUM, containing the | |
1263 | locations of the tokens. A copy of LOCS is taken. */ | |
1264 | ||
1265 | void | |
1266 | string_concat_db::record_string_concatenation (int num, location_t *locs) | |
1267 | { | |
1268 | gcc_assert (num > 1); | |
1269 | gcc_assert (locs); | |
1270 | ||
1271 | location_t key_loc = get_key_loc (locs[0]); | |
1272 | ||
1273 | string_concat *concat | |
1274 | = new (ggc_alloc <string_concat> ()) string_concat (num, locs); | |
1275 | m_table->put (key_loc, concat); | |
1276 | } | |
1277 | ||
1278 | /* Determine if LOC was the location of the the initial token of a | |
1279 | concatenation of string literal tokens. | |
1280 | If so, *OUT_NUM is written to with the number of tokens, and | |
1281 | *OUT_LOCS with the location of an array of locations of the | |
1282 | tokens, and return true. *OUT_LOCS is a borrowed pointer to | |
1283 | storage owned by the string_concat_db. | |
1284 | Otherwise, return false. */ | |
1285 | ||
1286 | bool | |
1287 | string_concat_db::get_string_concatenation (location_t loc, | |
1288 | int *out_num, | |
1289 | location_t **out_locs) | |
1290 | { | |
1291 | gcc_assert (out_num); | |
1292 | gcc_assert (out_locs); | |
1293 | ||
1294 | location_t key_loc = get_key_loc (loc); | |
1295 | ||
1296 | string_concat **concat = m_table->get (key_loc); | |
1297 | if (!concat) | |
1298 | return false; | |
1299 | ||
1300 | *out_num = (*concat)->m_num; | |
1301 | *out_locs =(*concat)->m_locs; | |
1302 | return true; | |
1303 | } | |
1304 | ||
1305 | /* Internal function. Canonicalize LOC into a form suitable for | |
1306 | use as a key within the database, stripping away macro expansion, | |
1307 | ad-hoc information, and range information, using the location of | |
1308 | the start of LOC within an ordinary linemap. */ | |
1309 | ||
1310 | location_t | |
1311 | string_concat_db::get_key_loc (location_t loc) | |
1312 | { | |
1313 | loc = linemap_resolve_location (line_table, loc, LRK_SPELLING_LOCATION, | |
1314 | NULL); | |
1315 | ||
1316 | loc = get_range_from_loc (line_table, loc).m_start; | |
1317 | ||
1318 | return loc; | |
1319 | } | |
1320 | ||
1321 | /* Helper class for use within get_substring_ranges_for_loc. | |
1322 | An vec of cpp_string with responsibility for releasing all of the | |
1323 | str->text for each str in the vector. */ | |
1324 | ||
1325 | class auto_cpp_string_vec : public auto_vec <cpp_string> | |
1326 | { | |
1327 | public: | |
1328 | auto_cpp_string_vec (int alloc) | |
1329 | : auto_vec <cpp_string> (alloc) {} | |
1330 | ||
1331 | ~auto_cpp_string_vec () | |
1332 | { | |
1333 | /* Clean up the copies within this vec. */ | |
1334 | int i; | |
1335 | cpp_string *str; | |
1336 | FOR_EACH_VEC_ELT (*this, i, str) | |
1337 | free (const_cast <unsigned char *> (str->text)); | |
1338 | } | |
1339 | }; | |
1340 | ||
1341 | /* Attempt to populate RANGES with source location information on the | |
1342 | individual characters within the string literal found at STRLOC. | |
1343 | If CONCATS is non-NULL, then any string literals that the token at | |
1344 | STRLOC was concatenated with are also added to RANGES. | |
1345 | ||
1346 | Return NULL if successful, or an error message if any errors occurred (in | |
1347 | which case RANGES may be only partially populated and should not | |
1348 | be used). | |
1349 | ||
1350 | This is implemented by re-parsing the relevant source line(s). */ | |
1351 | ||
1352 | static const char * | |
1353 | get_substring_ranges_for_loc (cpp_reader *pfile, | |
1354 | string_concat_db *concats, | |
1355 | location_t strloc, | |
1356 | enum cpp_ttype type, | |
1357 | cpp_substring_ranges &ranges) | |
1358 | { | |
1359 | gcc_assert (pfile); | |
1360 | ||
1361 | if (strloc == UNKNOWN_LOCATION) | |
1362 | return "unknown location"; | |
1363 | ||
67b5d0b2 DM |
1364 | /* Reparsing the strings requires accurate location information. |
1365 | If -ftrack-macro-expansion has been overridden from its default | |
1366 | of 2, then we might have a location of a macro expansion point, | |
1367 | rather than the location of the literal itself. | |
1368 | Avoid this by requiring that we have full macro expansion tracking | |
1369 | for substring locations to be available. */ | |
1370 | if (cpp_get_options (pfile)->track_macro_expansion != 2) | |
1371 | return "track_macro_expansion != 2"; | |
1372 | ||
94f597df DM |
1373 | /* If #line or # 44 "file"-style directives are present, then there's |
1374 | no guarantee that the line numbers we have can be used to locate | |
1375 | the strings. For example, we might have a .i file with # directives | |
1376 | pointing back to lines within a .c file, but the .c file might | |
1377 | have been edited since the .i file was created. | |
1378 | In such a case, the safest course is to disable on-demand substring | |
1379 | locations. */ | |
1380 | if (line_table->seen_line_directive) | |
1381 | return "seen line directive"; | |
1382 | ||
88fa5555 DM |
1383 | /* If string concatenation has occurred at STRLOC, get the locations |
1384 | of all of the literal tokens making up the compound string. | |
1385 | Otherwise, just use STRLOC. */ | |
1386 | int num_locs = 1; | |
1387 | location_t *strlocs = &strloc; | |
1388 | if (concats) | |
1389 | concats->get_string_concatenation (strloc, &num_locs, &strlocs); | |
1390 | ||
1391 | auto_cpp_string_vec strs (num_locs); | |
1392 | auto_vec <cpp_string_location_reader> loc_readers (num_locs); | |
1393 | for (int i = 0; i < num_locs; i++) | |
1394 | { | |
1395 | /* Get range of strloc. We will use it to locate the start and finish | |
1396 | of the literal token within the line. */ | |
1397 | source_range src_range = get_range_from_loc (line_table, strlocs[i]); | |
1398 | ||
1399 | if (src_range.m_start >= LINEMAPS_MACRO_LOWEST_LOCATION (line_table)) | |
0d48e877 DM |
1400 | { |
1401 | /* If the string token was within a macro expansion, then we can | |
1402 | cope with it for the simple case where we have a single token. | |
1403 | Otherwise, bail out. */ | |
1404 | if (src_range.m_start != src_range.m_finish) | |
1405 | return "macro expansion"; | |
1406 | } | |
1407 | else | |
1408 | { | |
1409 | if (src_range.m_start >= LINE_MAP_MAX_LOCATION_WITH_COLS) | |
1410 | /* If so, we can't reliably determine where the token started within | |
1411 | its line. */ | |
1412 | return "range starts after LINE_MAP_MAX_LOCATION_WITH_COLS"; | |
1413 | ||
1414 | if (src_range.m_finish >= LINE_MAP_MAX_LOCATION_WITH_COLS) | |
1415 | /* If so, we can't reliably determine where the token finished | |
1416 | within its line. */ | |
1417 | return "range ends after LINE_MAP_MAX_LOCATION_WITH_COLS"; | |
1418 | } | |
88fa5555 DM |
1419 | |
1420 | expanded_location start | |
0d48e877 DM |
1421 | = expand_location_to_spelling_point (src_range.m_start, |
1422 | LOCATION_ASPECT_START); | |
88fa5555 | 1423 | expanded_location finish |
0d48e877 DM |
1424 | = expand_location_to_spelling_point (src_range.m_finish, |
1425 | LOCATION_ASPECT_FINISH); | |
88fa5555 DM |
1426 | if (start.file != finish.file) |
1427 | return "range endpoints are in different files"; | |
1428 | if (start.line != finish.line) | |
1429 | return "range endpoints are on different lines"; | |
1430 | if (start.column > finish.column) | |
1431 | return "range endpoints are reversed"; | |
1432 | ||
7761dfbe DM |
1433 | char_span line = location_get_source_line (start.file, start.line); |
1434 | if (!line) | |
88fa5555 DM |
1435 | return "unable to read source line"; |
1436 | ||
1437 | /* Determine the location of the literal (including quotes | |
1438 | and leading prefix chars, such as the 'u' in a u"" | |
1439 | token). */ | |
7761dfbe | 1440 | size_t literal_length = finish.column - start.column + 1; |
88fa5555 | 1441 | |
7cfa044d | 1442 | /* Ensure that we don't crash if we got the wrong location. */ |
7761dfbe | 1443 | if (line.length () < (start.column - 1 + literal_length)) |
7cfa044d DM |
1444 | return "line is not wide enough"; |
1445 | ||
7761dfbe DM |
1446 | char_span literal = line.subspan (start.column - 1, literal_length); |
1447 | ||
88fa5555 DM |
1448 | cpp_string from; |
1449 | from.len = literal_length; | |
1450 | /* Make a copy of the literal, to avoid having to rely on | |
1451 | the lifetime of the copy of the line within the cache. | |
1452 | This will be released by the auto_cpp_string_vec dtor. */ | |
7761dfbe | 1453 | from.text = (unsigned char *)literal.xstrdup (); |
88fa5555 DM |
1454 | strs.safe_push (from); |
1455 | ||
1456 | /* For very long lines, a new linemap could have started | |
1457 | halfway through the token. | |
1458 | Ensure that the loc_reader uses the linemap of the | |
1459 | *end* of the token for its start location. */ | |
1460 | const line_map_ordinary *final_ord_map; | |
1461 | linemap_resolve_location (line_table, src_range.m_finish, | |
1462 | LRK_MACRO_EXPANSION_POINT, &final_ord_map); | |
1463 | location_t start_loc | |
1464 | = linemap_position_for_line_and_column (line_table, final_ord_map, | |
1465 | start.line, start.column); | |
1466 | ||
1467 | cpp_string_location_reader loc_reader (start_loc, line_table); | |
1468 | loc_readers.safe_push (loc_reader); | |
1469 | } | |
1470 | ||
1471 | /* Rerun cpp_interpret_string, or rather, a modified version of it. */ | |
1472 | const char *err = cpp_interpret_string_ranges (pfile, strs.address (), | |
1473 | loc_readers.address (), | |
1474 | num_locs, &ranges, type); | |
1475 | if (err) | |
1476 | return err; | |
1477 | ||
1478 | /* Success: "ranges" should now contain information on the string. */ | |
1479 | return NULL; | |
1480 | } | |
1481 | ||
65e736c0 DM |
1482 | /* Attempt to populate *OUT_LOC with source location information on the |
1483 | given characters within the string literal found at STRLOC. | |
1484 | CARET_IDX, START_IDX, and END_IDX refer to offsets within the execution | |
1485 | character set. | |
1486 | ||
1487 | For example, given CARET_IDX = 4, START_IDX = 3, END_IDX = 7 | |
1488 | and string literal "012345\n789" | |
1489 | *OUT_LOC is written to with: | |
1490 | "012345\n789" | |
1491 | ~^~~~~ | |
1492 | ||
88fa5555 DM |
1493 | If CONCATS is non-NULL, then any string literals that the token at |
1494 | STRLOC was concatenated with are also considered. | |
1495 | ||
1496 | This is implemented by re-parsing the relevant source line(s). | |
1497 | ||
1498 | Return NULL if successful, or an error message if any errors occurred. | |
1499 | Error messages are intended for GCC developers (to help debugging) rather | |
1500 | than for end-users. */ | |
1501 | ||
1502 | const char * | |
65e736c0 DM |
1503 | get_source_location_for_substring (cpp_reader *pfile, |
1504 | string_concat_db *concats, | |
1505 | location_t strloc, | |
1506 | enum cpp_ttype type, | |
1507 | int caret_idx, int start_idx, int end_idx, | |
1508 | source_location *out_loc) | |
1509 | { | |
1510 | gcc_checking_assert (caret_idx >= 0); | |
88fa5555 DM |
1511 | gcc_checking_assert (start_idx >= 0); |
1512 | gcc_checking_assert (end_idx >= 0); | |
65e736c0 | 1513 | gcc_assert (out_loc); |
88fa5555 DM |
1514 | |
1515 | cpp_substring_ranges ranges; | |
1516 | const char *err | |
1517 | = get_substring_ranges_for_loc (pfile, concats, strloc, type, ranges); | |
1518 | if (err) | |
1519 | return err; | |
1520 | ||
65e736c0 DM |
1521 | if (caret_idx >= ranges.get_num_ranges ()) |
1522 | return "caret_idx out of range"; | |
88fa5555 DM |
1523 | if (start_idx >= ranges.get_num_ranges ()) |
1524 | return "start_idx out of range"; | |
1525 | if (end_idx >= ranges.get_num_ranges ()) | |
1526 | return "end_idx out of range"; | |
1527 | ||
65e736c0 DM |
1528 | *out_loc = make_location (ranges.get_range (caret_idx).m_start, |
1529 | ranges.get_range (start_idx).m_start, | |
1530 | ranges.get_range (end_idx).m_finish); | |
1531 | return NULL; | |
1532 | } | |
1533 | ||
0e06d2b3 DM |
1534 | #if CHECKING_P |
1535 | ||
1536 | namespace selftest { | |
1537 | ||
1538 | /* Selftests of location handling. */ | |
1539 | ||
65e736c0 DM |
1540 | /* Attempt to populate *OUT_RANGE with source location information on the |
1541 | given character within the string literal found at STRLOC. | |
1542 | CHAR_IDX refers to an offset within the execution character set. | |
1543 | If CONCATS is non-NULL, then any string literals that the token at | |
1544 | STRLOC was concatenated with are also considered. | |
1545 | ||
1546 | This is implemented by re-parsing the relevant source line(s). | |
1547 | ||
1548 | Return NULL if successful, or an error message if any errors occurred. | |
1549 | Error messages are intended for GCC developers (to help debugging) rather | |
1550 | than for end-users. */ | |
1551 | ||
1552 | static const char * | |
1553 | get_source_range_for_char (cpp_reader *pfile, | |
1554 | string_concat_db *concats, | |
1555 | location_t strloc, | |
1556 | enum cpp_ttype type, | |
1557 | int char_idx, | |
1558 | source_range *out_range) | |
1559 | { | |
1560 | gcc_checking_assert (char_idx >= 0); | |
1561 | gcc_assert (out_range); | |
1562 | ||
1563 | cpp_substring_ranges ranges; | |
1564 | const char *err | |
1565 | = get_substring_ranges_for_loc (pfile, concats, strloc, type, ranges); | |
1566 | if (err) | |
1567 | return err; | |
1568 | ||
1569 | if (char_idx >= ranges.get_num_ranges ()) | |
1570 | return "char_idx out of range"; | |
1571 | ||
1572 | *out_range = ranges.get_range (char_idx); | |
88fa5555 DM |
1573 | return NULL; |
1574 | } | |
1575 | ||
65e736c0 | 1576 | /* As get_source_range_for_char, but write to *OUT the number |
88fa5555 DM |
1577 | of ranges that are available. */ |
1578 | ||
0e06d2b3 | 1579 | static const char * |
88fa5555 DM |
1580 | get_num_source_ranges_for_substring (cpp_reader *pfile, |
1581 | string_concat_db *concats, | |
1582 | location_t strloc, | |
1583 | enum cpp_ttype type, | |
1584 | int *out) | |
1585 | { | |
1586 | gcc_assert (out); | |
1587 | ||
1588 | cpp_substring_ranges ranges; | |
1589 | const char *err | |
1590 | = get_substring_ranges_for_loc (pfile, concats, strloc, type, ranges); | |
1591 | ||
1592 | if (err) | |
1593 | return err; | |
1594 | ||
1595 | *out = ranges.get_num_ranges (); | |
1596 | return NULL; | |
1597 | } | |
1598 | ||
d9b950dd DM |
1599 | /* Selftests of location handling. */ |
1600 | ||
082284da DM |
1601 | /* Verify that compare() on linenum_type handles comparisons over the full |
1602 | range of the type. */ | |
1603 | ||
1604 | static void | |
1605 | test_linenum_comparisons () | |
1606 | { | |
1607 | linenum_type min_line (0); | |
1608 | linenum_type max_line (0xffffffff); | |
1609 | ASSERT_EQ (0, compare (min_line, min_line)); | |
1610 | ASSERT_EQ (0, compare (max_line, max_line)); | |
1611 | ||
1612 | ASSERT_GT (compare (max_line, min_line), 0); | |
1613 | ASSERT_LT (compare (min_line, max_line), 0); | |
1614 | } | |
1615 | ||
741d3be5 DM |
1616 | /* Helper function for verifying location data: when location_t |
1617 | values are > LINE_MAP_MAX_LOCATION_WITH_COLS, they are treated | |
1618 | as having column 0. */ | |
1619 | ||
1620 | static bool | |
1621 | should_have_column_data_p (location_t loc) | |
1622 | { | |
1623 | if (IS_ADHOC_LOC (loc)) | |
1624 | loc = get_location_from_adhoc_loc (line_table, loc); | |
1625 | if (loc > LINE_MAP_MAX_LOCATION_WITH_COLS) | |
1626 | return false; | |
1627 | return true; | |
1628 | } | |
1629 | ||
1630 | /* Selftest for should_have_column_data_p. */ | |
1631 | ||
1632 | static void | |
1633 | test_should_have_column_data_p () | |
1634 | { | |
1635 | ASSERT_TRUE (should_have_column_data_p (RESERVED_LOCATION_COUNT)); | |
1636 | ASSERT_TRUE | |
1637 | (should_have_column_data_p (LINE_MAP_MAX_LOCATION_WITH_COLS)); | |
1638 | ASSERT_FALSE | |
1639 | (should_have_column_data_p (LINE_MAP_MAX_LOCATION_WITH_COLS + 1)); | |
1640 | } | |
1641 | ||
d9b950dd DM |
1642 | /* Verify the result of LOCATION_FILE/LOCATION_LINE/LOCATION_COLUMN |
1643 | on LOC. */ | |
1644 | ||
1645 | static void | |
1646 | assert_loceq (const char *exp_filename, int exp_linenum, int exp_colnum, | |
1647 | location_t loc) | |
1648 | { | |
1649 | ASSERT_STREQ (exp_filename, LOCATION_FILE (loc)); | |
1650 | ASSERT_EQ (exp_linenum, LOCATION_LINE (loc)); | |
741d3be5 DM |
1651 | /* If location_t values are sufficiently high, then column numbers |
1652 | will be unavailable and LOCATION_COLUMN (loc) will be 0. | |
1653 | When close to the threshold, column numbers *may* be present: if | |
1654 | the final linemap before the threshold contains a line that straddles | |
1655 | the threshold, locations in that line have column information. */ | |
1656 | if (should_have_column_data_p (loc)) | |
1657 | ASSERT_EQ (exp_colnum, LOCATION_COLUMN (loc)); | |
1658 | } | |
1659 | ||
f87e22c5 DM |
1660 | /* Various selftests involve constructing a line table and one or more |
1661 | line maps within it. | |
741d3be5 DM |
1662 | |
1663 | For maximum test coverage we want to run these tests with a variety | |
1664 | of situations: | |
1665 | - line_table->default_range_bits: some frontends use a non-zero value | |
1666 | and others use zero | |
1667 | - the fallback modes within line-map.c: there are various threshold | |
1668 | values for source_location/location_t beyond line-map.c changes | |
1669 | behavior (disabling of the range-packing optimization, disabling | |
1670 | of column-tracking). We can exercise these by starting the line_table | |
1671 | at interesting values at or near these thresholds. | |
1672 | ||
1673 | The following struct describes a particular case within our test | |
1674 | matrix. */ | |
1675 | ||
1676 | struct line_table_case | |
1677 | { | |
1678 | line_table_case (int default_range_bits, int base_location) | |
1679 | : m_default_range_bits (default_range_bits), | |
1680 | m_base_location (base_location) | |
1681 | {} | |
1682 | ||
1683 | int m_default_range_bits; | |
1684 | int m_base_location; | |
1685 | }; | |
1686 | ||
f87e22c5 DM |
1687 | /* Constructor. Store the old value of line_table, and create a new |
1688 | one, using sane defaults. */ | |
741d3be5 | 1689 | |
f87e22c5 | 1690 | line_table_test::line_table_test () |
741d3be5 | 1691 | { |
f87e22c5 DM |
1692 | gcc_assert (saved_line_table == NULL); |
1693 | saved_line_table = line_table; | |
1694 | line_table = ggc_alloc<line_maps> (); | |
1695 | linemap_init (line_table, BUILTINS_LOCATION); | |
1696 | gcc_assert (saved_line_table->reallocator); | |
1697 | line_table->reallocator = saved_line_table->reallocator; | |
1698 | gcc_assert (saved_line_table->round_alloc_size); | |
1699 | line_table->round_alloc_size = saved_line_table->round_alloc_size; | |
1700 | line_table->default_range_bits = 0; | |
1701 | } | |
741d3be5 DM |
1702 | |
1703 | /* Constructor. Store the old value of line_table, and create a new | |
1704 | one, using the sitation described in CASE_. */ | |
1705 | ||
f87e22c5 | 1706 | line_table_test::line_table_test (const line_table_case &case_) |
741d3be5 | 1707 | { |
f87e22c5 DM |
1708 | gcc_assert (saved_line_table == NULL); |
1709 | saved_line_table = line_table; | |
741d3be5 DM |
1710 | line_table = ggc_alloc<line_maps> (); |
1711 | linemap_init (line_table, BUILTINS_LOCATION); | |
f87e22c5 DM |
1712 | gcc_assert (saved_line_table->reallocator); |
1713 | line_table->reallocator = saved_line_table->reallocator; | |
1714 | gcc_assert (saved_line_table->round_alloc_size); | |
1715 | line_table->round_alloc_size = saved_line_table->round_alloc_size; | |
741d3be5 DM |
1716 | line_table->default_range_bits = case_.m_default_range_bits; |
1717 | if (case_.m_base_location) | |
1718 | { | |
1719 | line_table->highest_location = case_.m_base_location; | |
1720 | line_table->highest_line = case_.m_base_location; | |
1721 | } | |
1722 | } | |
1723 | ||
1724 | /* Destructor. Restore the old value of line_table. */ | |
1725 | ||
f87e22c5 | 1726 | line_table_test::~line_table_test () |
741d3be5 | 1727 | { |
f87e22c5 DM |
1728 | gcc_assert (saved_line_table != NULL); |
1729 | line_table = saved_line_table; | |
1730 | saved_line_table = NULL; | |
d9b950dd DM |
1731 | } |
1732 | ||
1733 | /* Verify basic operation of ordinary linemaps. */ | |
1734 | ||
1735 | static void | |
741d3be5 | 1736 | test_accessing_ordinary_linemaps (const line_table_case &case_) |
d9b950dd | 1737 | { |
f87e22c5 | 1738 | line_table_test ltt (case_); |
741d3be5 | 1739 | |
d9b950dd DM |
1740 | /* Build a simple linemap describing some locations. */ |
1741 | linemap_add (line_table, LC_ENTER, false, "foo.c", 0); | |
1742 | ||
1743 | linemap_line_start (line_table, 1, 100); | |
1744 | location_t loc_a = linemap_position_for_column (line_table, 1); | |
1745 | location_t loc_b = linemap_position_for_column (line_table, 23); | |
1746 | ||
1747 | linemap_line_start (line_table, 2, 100); | |
1748 | location_t loc_c = linemap_position_for_column (line_table, 1); | |
1749 | location_t loc_d = linemap_position_for_column (line_table, 17); | |
1750 | ||
1751 | /* Example of a very long line. */ | |
1752 | linemap_line_start (line_table, 3, 2000); | |
1753 | location_t loc_e = linemap_position_for_column (line_table, 700); | |
1754 | ||
5ccf1d8d DM |
1755 | /* Transitioning back to a short line. */ |
1756 | linemap_line_start (line_table, 4, 0); | |
1757 | location_t loc_back_to_short = linemap_position_for_column (line_table, 100); | |
1758 | ||
1759 | if (should_have_column_data_p (loc_back_to_short)) | |
1760 | { | |
1761 | /* Verify that we switched to short lines in the linemap. */ | |
1762 | line_map_ordinary *map = LINEMAPS_LAST_ORDINARY_MAP (line_table); | |
1763 | ASSERT_EQ (7, map->m_column_and_range_bits - map->m_range_bits); | |
1764 | } | |
1765 | ||
b9f4757f DM |
1766 | /* Example of a line that will eventually be seen to be longer |
1767 | than LINE_MAP_MAX_COLUMN_NUMBER; the initially seen width is | |
1768 | below that. */ | |
1769 | linemap_line_start (line_table, 5, 2000); | |
1770 | ||
1771 | location_t loc_start_of_very_long_line | |
1772 | = linemap_position_for_column (line_table, 2000); | |
1773 | location_t loc_too_wide | |
1774 | = linemap_position_for_column (line_table, 4097); | |
1775 | location_t loc_too_wide_2 | |
1776 | = linemap_position_for_column (line_table, 4098); | |
1777 | ||
1778 | /* ...and back to a sane line length. */ | |
1779 | linemap_line_start (line_table, 6, 100); | |
1780 | location_t loc_sane_again = linemap_position_for_column (line_table, 10); | |
1781 | ||
d9b950dd DM |
1782 | linemap_add (line_table, LC_LEAVE, false, NULL, 0); |
1783 | ||
1784 | /* Multiple files. */ | |
1785 | linemap_add (line_table, LC_ENTER, false, "bar.c", 0); | |
1786 | linemap_line_start (line_table, 1, 200); | |
1787 | location_t loc_f = linemap_position_for_column (line_table, 150); | |
1788 | linemap_add (line_table, LC_LEAVE, false, NULL, 0); | |
1789 | ||
1790 | /* Verify that we can recover the location info. */ | |
1791 | assert_loceq ("foo.c", 1, 1, loc_a); | |
1792 | assert_loceq ("foo.c", 1, 23, loc_b); | |
1793 | assert_loceq ("foo.c", 2, 1, loc_c); | |
1794 | assert_loceq ("foo.c", 2, 17, loc_d); | |
1795 | assert_loceq ("foo.c", 3, 700, loc_e); | |
5ccf1d8d | 1796 | assert_loceq ("foo.c", 4, 100, loc_back_to_short); |
b9f4757f DM |
1797 | |
1798 | /* In the very wide line, the initial location should be fully tracked. */ | |
1799 | assert_loceq ("foo.c", 5, 2000, loc_start_of_very_long_line); | |
1800 | /* ...but once we exceed LINE_MAP_MAX_COLUMN_NUMBER column-tracking should | |
1801 | be disabled. */ | |
1802 | assert_loceq ("foo.c", 5, 0, loc_too_wide); | |
1803 | assert_loceq ("foo.c", 5, 0, loc_too_wide_2); | |
1804 | /*...and column-tracking should be re-enabled for subsequent lines. */ | |
1805 | assert_loceq ("foo.c", 6, 10, loc_sane_again); | |
1806 | ||
d9b950dd DM |
1807 | assert_loceq ("bar.c", 1, 150, loc_f); |
1808 | ||
1809 | ASSERT_FALSE (is_location_from_builtin_token (loc_a)); | |
a01fc549 DM |
1810 | ASSERT_TRUE (pure_location_p (line_table, loc_a)); |
1811 | ||
1812 | /* Verify using make_location to build a range, and extracting data | |
1813 | back from it. */ | |
1814 | location_t range_c_b_d = make_location (loc_c, loc_b, loc_d); | |
1815 | ASSERT_FALSE (pure_location_p (line_table, range_c_b_d)); | |
1816 | ASSERT_EQ (loc_c, get_location_from_adhoc_loc (line_table, range_c_b_d)); | |
1817 | source_range src_range = get_range_from_loc (line_table, range_c_b_d); | |
1818 | ASSERT_EQ (loc_b, src_range.m_start); | |
1819 | ASSERT_EQ (loc_d, src_range.m_finish); | |
d9b950dd DM |
1820 | } |
1821 | ||
1822 | /* Verify various properties of UNKNOWN_LOCATION. */ | |
1823 | ||
1824 | static void | |
1825 | test_unknown_location () | |
1826 | { | |
1827 | ASSERT_EQ (NULL, LOCATION_FILE (UNKNOWN_LOCATION)); | |
1828 | ASSERT_EQ (0, LOCATION_LINE (UNKNOWN_LOCATION)); | |
1829 | ASSERT_EQ (0, LOCATION_COLUMN (UNKNOWN_LOCATION)); | |
1830 | } | |
1831 | ||
1832 | /* Verify various properties of BUILTINS_LOCATION. */ | |
1833 | ||
1834 | static void | |
1835 | test_builtins () | |
1836 | { | |
10d2fc23 | 1837 | assert_loceq (_("<built-in>"), 0, 0, BUILTINS_LOCATION); |
d9b950dd DM |
1838 | ASSERT_PRED1 (is_location_from_builtin_token, BUILTINS_LOCATION); |
1839 | } | |
1840 | ||
9144eabb | 1841 | /* Regression test for make_location. |
cfa435e1 DM |
1842 | Ensure that we use pure locations for the start/finish of the range, |
1843 | rather than storing a packed or ad-hoc range as the start/finish. */ | |
9144eabb DM |
1844 | |
1845 | static void | |
1846 | test_make_location_nonpure_range_endpoints (const line_table_case &case_) | |
1847 | { | |
1848 | /* Issue seen with testsuite/c-c++-common/Wlogical-not-parentheses-2.c | |
1849 | with C++ frontend. | |
1850 | ....................0000000001111111111222. | |
1851 | ....................1234567890123456789012. */ | |
1852 | const char *content = " r += !aaa == bbb;\n"; | |
1853 | temp_source_file tmp (SELFTEST_LOCATION, ".C", content); | |
1854 | line_table_test ltt (case_); | |
1855 | linemap_add (line_table, LC_ENTER, false, tmp.get_filename (), 1); | |
1856 | ||
1857 | const location_t c11 = linemap_position_for_column (line_table, 11); | |
1858 | const location_t c12 = linemap_position_for_column (line_table, 12); | |
1859 | const location_t c13 = linemap_position_for_column (line_table, 13); | |
1860 | const location_t c14 = linemap_position_for_column (line_table, 14); | |
1861 | const location_t c21 = linemap_position_for_column (line_table, 21); | |
1862 | ||
1863 | if (c21 > LINE_MAP_MAX_LOCATION_WITH_COLS) | |
1864 | return; | |
1865 | ||
1866 | /* Use column 13 for the caret location, arbitrarily, to verify that we | |
1867 | handle start != caret. */ | |
1868 | const location_t aaa = make_location (c13, c12, c14); | |
1869 | ASSERT_EQ (c13, get_pure_location (aaa)); | |
1870 | ASSERT_EQ (c12, get_start (aaa)); | |
1871 | ASSERT_FALSE (IS_ADHOC_LOC (get_start (aaa))); | |
1872 | ASSERT_EQ (c14, get_finish (aaa)); | |
1873 | ASSERT_FALSE (IS_ADHOC_LOC (get_finish (aaa))); | |
1874 | ||
1875 | /* Make a location using a location with a range as the start-point. */ | |
1876 | const location_t not_aaa = make_location (c11, aaa, c14); | |
1877 | ASSERT_EQ (c11, get_pure_location (not_aaa)); | |
1878 | /* It should use the start location of the range, not store the range | |
1879 | itself. */ | |
1880 | ASSERT_EQ (c12, get_start (not_aaa)); | |
1881 | ASSERT_FALSE (IS_ADHOC_LOC (get_start (not_aaa))); | |
1882 | ASSERT_EQ (c14, get_finish (not_aaa)); | |
1883 | ASSERT_FALSE (IS_ADHOC_LOC (get_finish (not_aaa))); | |
1884 | ||
1885 | /* Similarly, make a location with a range as the end-point. */ | |
1886 | const location_t aaa_eq_bbb = make_location (c12, c12, c21); | |
1887 | ASSERT_EQ (c12, get_pure_location (aaa_eq_bbb)); | |
1888 | ASSERT_EQ (c12, get_start (aaa_eq_bbb)); | |
1889 | ASSERT_FALSE (IS_ADHOC_LOC (get_start (aaa_eq_bbb))); | |
1890 | ASSERT_EQ (c21, get_finish (aaa_eq_bbb)); | |
1891 | ASSERT_FALSE (IS_ADHOC_LOC (get_finish (aaa_eq_bbb))); | |
1892 | const location_t not_aaa_eq_bbb = make_location (c11, c12, aaa_eq_bbb); | |
1893 | /* It should use the finish location of the range, not store the range | |
1894 | itself. */ | |
1895 | ASSERT_EQ (c11, get_pure_location (not_aaa_eq_bbb)); | |
1896 | ASSERT_EQ (c12, get_start (not_aaa_eq_bbb)); | |
1897 | ASSERT_FALSE (IS_ADHOC_LOC (get_start (not_aaa_eq_bbb))); | |
1898 | ASSERT_EQ (c21, get_finish (not_aaa_eq_bbb)); | |
1899 | ASSERT_FALSE (IS_ADHOC_LOC (get_finish (not_aaa_eq_bbb))); | |
1900 | } | |
1901 | ||
d9b950dd DM |
1902 | /* Verify reading of input files (e.g. for caret-based diagnostics). */ |
1903 | ||
1904 | static void | |
1905 | test_reading_source_line () | |
1906 | { | |
85ecd05c | 1907 | /* Create a tempfile and write some text to it. */ |
741d3be5 DM |
1908 | temp_source_file tmp (SELFTEST_LOCATION, ".txt", |
1909 | "01234567890123456789\n" | |
1910 | "This is the test text\n" | |
1adae327 | 1911 | "This is the 3rd line"); |
85ecd05c DM |
1912 | |
1913 | /* Read back a specific line from the tempfile. */ | |
7761dfbe DM |
1914 | char_span source_line = location_get_source_line (tmp.get_filename (), 3); |
1915 | ASSERT_TRUE (source_line); | |
1916 | ASSERT_TRUE (source_line.get_buffer () != NULL); | |
1917 | ASSERT_EQ (20, source_line.length ()); | |
1adae327 | 1918 | ASSERT_TRUE (!strncmp ("This is the 3rd line", |
7761dfbe | 1919 | source_line.get_buffer (), source_line.length ())); |
1adae327 | 1920 | |
7761dfbe DM |
1921 | source_line = location_get_source_line (tmp.get_filename (), 2); |
1922 | ASSERT_TRUE (source_line); | |
1923 | ASSERT_TRUE (source_line.get_buffer () != NULL); | |
1924 | ASSERT_EQ (21, source_line.length ()); | |
1adae327 | 1925 | ASSERT_TRUE (!strncmp ("This is the test text", |
7761dfbe | 1926 | source_line.get_buffer (), source_line.length ())); |
85ecd05c | 1927 | |
7761dfbe DM |
1928 | source_line = location_get_source_line (tmp.get_filename (), 4); |
1929 | ASSERT_FALSE (source_line); | |
1930 | ASSERT_TRUE (source_line.get_buffer () == NULL); | |
d9b950dd DM |
1931 | } |
1932 | ||
741d3be5 DM |
1933 | /* Tests of lexing. */ |
1934 | ||
1935 | /* Verify that token TOK from PARSER has cpp_token_as_text | |
1936 | equal to EXPECTED_TEXT. */ | |
1937 | ||
1938 | #define ASSERT_TOKEN_AS_TEXT_EQ(PARSER, TOK, EXPECTED_TEXT) \ | |
1939 | SELFTEST_BEGIN_STMT \ | |
1940 | unsigned char *actual_txt = cpp_token_as_text ((PARSER), (TOK)); \ | |
1941 | ASSERT_STREQ ((EXPECTED_TEXT), (const char *)actual_txt); \ | |
1942 | SELFTEST_END_STMT | |
1943 | ||
1944 | /* Verify that TOK's src_loc is within EXP_FILENAME at EXP_LINENUM, | |
1945 | and ranges from EXP_START_COL to EXP_FINISH_COL. | |
1946 | Use LOC as the effective location of the selftest. */ | |
1947 | ||
1948 | static void | |
1949 | assert_token_loc_eq (const location &loc, | |
1950 | const cpp_token *tok, | |
1951 | const char *exp_filename, int exp_linenum, | |
1952 | int exp_start_col, int exp_finish_col) | |
1953 | { | |
1954 | location_t tok_loc = tok->src_loc; | |
1955 | ASSERT_STREQ_AT (loc, exp_filename, LOCATION_FILE (tok_loc)); | |
1956 | ASSERT_EQ_AT (loc, exp_linenum, LOCATION_LINE (tok_loc)); | |
1957 | ||
1958 | /* If location_t values are sufficiently high, then column numbers | |
1959 | will be unavailable. */ | |
1960 | if (!should_have_column_data_p (tok_loc)) | |
1961 | return; | |
1962 | ||
1963 | ASSERT_EQ_AT (loc, exp_start_col, LOCATION_COLUMN (tok_loc)); | |
1964 | source_range tok_range = get_range_from_loc (line_table, tok_loc); | |
1965 | ASSERT_EQ_AT (loc, exp_start_col, LOCATION_COLUMN (tok_range.m_start)); | |
1966 | ASSERT_EQ_AT (loc, exp_finish_col, LOCATION_COLUMN (tok_range.m_finish)); | |
1967 | } | |
1968 | ||
1969 | /* Use assert_token_loc_eq to verify the TOK->src_loc, using | |
1970 | SELFTEST_LOCATION as the effective location of the selftest. */ | |
1971 | ||
1972 | #define ASSERT_TOKEN_LOC_EQ(TOK, EXP_FILENAME, EXP_LINENUM, \ | |
1973 | EXP_START_COL, EXP_FINISH_COL) \ | |
1974 | assert_token_loc_eq (SELFTEST_LOCATION, (TOK), (EXP_FILENAME), \ | |
1975 | (EXP_LINENUM), (EXP_START_COL), (EXP_FINISH_COL)) | |
1976 | ||
1977 | /* Test of lexing a file using libcpp, verifying tokens and their | |
1978 | location information. */ | |
1979 | ||
1980 | static void | |
1981 | test_lexer (const line_table_case &case_) | |
1982 | { | |
1983 | /* Create a tempfile and write some text to it. */ | |
1984 | const char *content = | |
1985 | /*00000000011111111112222222222333333.3333444444444.455555555556 | |
1986 | 12345678901234567890123456789012345.6789012345678.901234567890. */ | |
1987 | ("test_name /* c-style comment */\n" | |
1988 | " \"test literal\"\n" | |
1989 | " // test c++-style comment\n" | |
1990 | " 42\n"); | |
1991 | temp_source_file tmp (SELFTEST_LOCATION, ".txt", content); | |
1992 | ||
f87e22c5 | 1993 | line_table_test ltt (case_); |
741d3be5 DM |
1994 | |
1995 | cpp_reader *parser = cpp_create_reader (CLK_GNUC89, NULL, line_table); | |
1996 | ||
1997 | const char *fname = cpp_read_main_file (parser, tmp.get_filename ()); | |
1998 | ASSERT_NE (fname, NULL); | |
1999 | ||
2000 | /* Verify that we get the expected tokens back, with the correct | |
2001 | location information. */ | |
2002 | ||
2003 | location_t loc; | |
2004 | const cpp_token *tok; | |
2005 | tok = cpp_get_token_with_location (parser, &loc); | |
2006 | ASSERT_NE (tok, NULL); | |
2007 | ASSERT_EQ (tok->type, CPP_NAME); | |
2008 | ASSERT_TOKEN_AS_TEXT_EQ (parser, tok, "test_name"); | |
2009 | ASSERT_TOKEN_LOC_EQ (tok, tmp.get_filename (), 1, 1, 9); | |
2010 | ||
2011 | tok = cpp_get_token_with_location (parser, &loc); | |
2012 | ASSERT_NE (tok, NULL); | |
2013 | ASSERT_EQ (tok->type, CPP_STRING); | |
2014 | ASSERT_TOKEN_AS_TEXT_EQ (parser, tok, "\"test literal\""); | |
2015 | ASSERT_TOKEN_LOC_EQ (tok, tmp.get_filename (), 2, 35, 48); | |
2016 | ||
2017 | tok = cpp_get_token_with_location (parser, &loc); | |
2018 | ASSERT_NE (tok, NULL); | |
2019 | ASSERT_EQ (tok->type, CPP_NUMBER); | |
2020 | ASSERT_TOKEN_AS_TEXT_EQ (parser, tok, "42"); | |
2021 | ASSERT_TOKEN_LOC_EQ (tok, tmp.get_filename (), 4, 4, 5); | |
2022 | ||
2023 | tok = cpp_get_token_with_location (parser, &loc); | |
2024 | ASSERT_NE (tok, NULL); | |
2025 | ASSERT_EQ (tok->type, CPP_EOF); | |
2026 | ||
2027 | cpp_finish (parser, NULL); | |
2028 | cpp_destroy (parser); | |
2029 | } | |
2030 | ||
88fa5555 DM |
2031 | /* Forward decls. */ |
2032 | ||
2033 | struct lexer_test; | |
2034 | class lexer_test_options; | |
2035 | ||
2036 | /* A class for specifying options of a lexer_test. | |
2037 | The "apply" vfunc is called during the lexer_test constructor. */ | |
2038 | ||
2039 | class lexer_test_options | |
2040 | { | |
2041 | public: | |
2042 | virtual void apply (lexer_test &) = 0; | |
2043 | }; | |
2044 | ||
f5ea989d DM |
2045 | /* Wrapper around an cpp_reader *, which calls cpp_finish and cpp_destroy |
2046 | in its dtor. | |
2047 | ||
2048 | This is needed by struct lexer_test to ensure that the cleanup of the | |
2049 | cpp_reader happens *after* the cleanup of the temp_source_file. */ | |
2050 | ||
2051 | class cpp_reader_ptr | |
2052 | { | |
2053 | public: | |
2054 | cpp_reader_ptr (cpp_reader *ptr) : m_ptr (ptr) {} | |
2055 | ||
2056 | ~cpp_reader_ptr () | |
2057 | { | |
2058 | cpp_finish (m_ptr, NULL); | |
2059 | cpp_destroy (m_ptr); | |
2060 | } | |
2061 | ||
2062 | operator cpp_reader * () const { return m_ptr; } | |
2063 | ||
2064 | private: | |
2065 | cpp_reader *m_ptr; | |
2066 | }; | |
2067 | ||
88fa5555 DM |
2068 | /* A struct for writing lexer tests. */ |
2069 | ||
2070 | struct lexer_test | |
2071 | { | |
2072 | lexer_test (const line_table_case &case_, const char *content, | |
2073 | lexer_test_options *options); | |
2074 | ~lexer_test (); | |
2075 | ||
2076 | const cpp_token *get_token (); | |
2077 | ||
f5ea989d DM |
2078 | /* The ordering of these fields matters. |
2079 | The line_table_test must be first, since the cpp_reader_ptr | |
2080 | uses it. | |
2081 | The cpp_reader must be cleaned up *after* the temp_source_file | |
2082 | since the filenames in input.c's input cache are owned by the | |
2083 | cpp_reader; in particular, when ~temp_source_file evicts the | |
2084 | filename the filenames must still be alive. */ | |
f87e22c5 | 2085 | line_table_test m_ltt; |
f5ea989d DM |
2086 | cpp_reader_ptr m_parser; |
2087 | temp_source_file m_tempfile; | |
88fa5555 | 2088 | string_concat_db m_concats; |
a3998c2f | 2089 | bool m_implicitly_expect_EOF; |
88fa5555 DM |
2090 | }; |
2091 | ||
2092 | /* Use an EBCDIC encoding for the execution charset, specifically | |
2093 | IBM1047-encoded (aka "EBCDIC 1047", or "Code page 1047"). | |
2094 | ||
2095 | This exercises iconv integration within libcpp. | |
2096 | Not every build of iconv supports the given charset, | |
2097 | so we need to flag this error and handle it gracefully. */ | |
2098 | ||
2099 | class ebcdic_execution_charset : public lexer_test_options | |
2100 | { | |
2101 | public: | |
2102 | ebcdic_execution_charset () : m_num_iconv_errors (0) | |
2103 | { | |
2104 | gcc_assert (s_singleton == NULL); | |
2105 | s_singleton = this; | |
2106 | } | |
2107 | ~ebcdic_execution_charset () | |
2108 | { | |
2109 | gcc_assert (s_singleton == this); | |
2110 | s_singleton = NULL; | |
2111 | } | |
2112 | ||
2113 | void apply (lexer_test &test) FINAL OVERRIDE | |
2114 | { | |
2115 | cpp_options *cpp_opts = cpp_get_options (test.m_parser); | |
2116 | cpp_opts->narrow_charset = "IBM1047"; | |
2117 | ||
2118 | cpp_callbacks *callbacks = cpp_get_callbacks (test.m_parser); | |
2119 | callbacks->error = on_error; | |
2120 | } | |
2121 | ||
2122 | static bool on_error (cpp_reader *pfile ATTRIBUTE_UNUSED, | |
2123 | int level ATTRIBUTE_UNUSED, | |
2124 | int reason ATTRIBUTE_UNUSED, | |
2125 | rich_location *richloc ATTRIBUTE_UNUSED, | |
2126 | const char *msgid, va_list *ap ATTRIBUTE_UNUSED) | |
2127 | ATTRIBUTE_FPTR_PRINTF(5,0) | |
2128 | { | |
2129 | gcc_assert (s_singleton); | |
a7085816 JJ |
2130 | /* Avoid exgettext from picking this up, it is translated in libcpp. */ |
2131 | const char *msg = "conversion from %s to %s not supported by iconv"; | |
2132 | #ifdef ENABLE_NLS | |
2133 | msg = dgettext ("cpplib", msg); | |
2134 | #endif | |
88fa5555 DM |
2135 | /* Detect and record errors emitted by libcpp/charset.c:init_iconv_desc |
2136 | when the local iconv build doesn't support the conversion. */ | |
a7085816 | 2137 | if (strcmp (msgid, msg) == 0) |
88fa5555 DM |
2138 | { |
2139 | s_singleton->m_num_iconv_errors++; | |
2140 | return true; | |
2141 | } | |
2142 | ||
2143 | /* Otherwise, we have an unexpected error. */ | |
2144 | abort (); | |
2145 | } | |
2146 | ||
2147 | bool iconv_errors_occurred_p () const { return m_num_iconv_errors > 0; } | |
2148 | ||
2149 | private: | |
2150 | static ebcdic_execution_charset *s_singleton; | |
2151 | int m_num_iconv_errors; | |
2152 | }; | |
2153 | ||
2154 | ebcdic_execution_charset *ebcdic_execution_charset::s_singleton; | |
2155 | ||
a3998c2f DM |
2156 | /* A lexer_test_options subclass that records a list of error |
2157 | messages emitted by the lexer. */ | |
2158 | ||
2159 | class lexer_error_sink : public lexer_test_options | |
2160 | { | |
2161 | public: | |
2162 | lexer_error_sink () | |
2163 | { | |
2164 | gcc_assert (s_singleton == NULL); | |
2165 | s_singleton = this; | |
2166 | } | |
2167 | ~lexer_error_sink () | |
2168 | { | |
2169 | gcc_assert (s_singleton == this); | |
2170 | s_singleton = NULL; | |
2171 | ||
2172 | int i; | |
2173 | char *str; | |
2174 | FOR_EACH_VEC_ELT (m_errors, i, str) | |
2175 | free (str); | |
2176 | } | |
2177 | ||
2178 | void apply (lexer_test &test) FINAL OVERRIDE | |
2179 | { | |
2180 | cpp_callbacks *callbacks = cpp_get_callbacks (test.m_parser); | |
2181 | callbacks->error = on_error; | |
2182 | } | |
2183 | ||
2184 | static bool on_error (cpp_reader *pfile ATTRIBUTE_UNUSED, | |
2185 | int level ATTRIBUTE_UNUSED, | |
2186 | int reason ATTRIBUTE_UNUSED, | |
2187 | rich_location *richloc ATTRIBUTE_UNUSED, | |
2188 | const char *msgid, va_list *ap) | |
2189 | ATTRIBUTE_FPTR_PRINTF(5,0) | |
2190 | { | |
2191 | char *msg = xvasprintf (msgid, *ap); | |
2192 | s_singleton->m_errors.safe_push (msg); | |
2193 | return true; | |
2194 | } | |
2195 | ||
2196 | auto_vec<char *> m_errors; | |
2197 | ||
2198 | private: | |
2199 | static lexer_error_sink *s_singleton; | |
2200 | }; | |
2201 | ||
2202 | lexer_error_sink *lexer_error_sink::s_singleton; | |
2203 | ||
88fa5555 DM |
2204 | /* Constructor. Override line_table with a new instance based on CASE_, |
2205 | and write CONTENT to a tempfile. Create a cpp_reader, and use it to | |
2206 | start parsing the tempfile. */ | |
2207 | ||
2208 | lexer_test::lexer_test (const line_table_case &case_, const char *content, | |
f5ea989d DM |
2209 | lexer_test_options *options) |
2210 | : m_ltt (case_), | |
2211 | m_parser (cpp_create_reader (CLK_GNUC99, NULL, line_table)), | |
88fa5555 DM |
2212 | /* Create a tempfile and write the text to it. */ |
2213 | m_tempfile (SELFTEST_LOCATION, ".c", content), | |
a3998c2f DM |
2214 | m_concats (), |
2215 | m_implicitly_expect_EOF (true) | |
88fa5555 DM |
2216 | { |
2217 | if (options) | |
2218 | options->apply (*this); | |
2219 | ||
2220 | cpp_init_iconv (m_parser); | |
2221 | ||
2222 | /* Parse the file. */ | |
2223 | const char *fname = cpp_read_main_file (m_parser, | |
2224 | m_tempfile.get_filename ()); | |
2225 | ASSERT_NE (fname, NULL); | |
2226 | } | |
2227 | ||
a3998c2f | 2228 | /* Destructor. By default, verify that the next token in m_parser is EOF. */ |
88fa5555 DM |
2229 | |
2230 | lexer_test::~lexer_test () | |
2231 | { | |
2232 | location_t loc; | |
2233 | const cpp_token *tok; | |
2234 | ||
a3998c2f DM |
2235 | if (m_implicitly_expect_EOF) |
2236 | { | |
2237 | tok = cpp_get_token_with_location (m_parser, &loc); | |
2238 | ASSERT_NE (tok, NULL); | |
2239 | ASSERT_EQ (tok->type, CPP_EOF); | |
2240 | } | |
88fa5555 DM |
2241 | } |
2242 | ||
2243 | /* Get the next token from m_parser. */ | |
2244 | ||
2245 | const cpp_token * | |
2246 | lexer_test::get_token () | |
2247 | { | |
2248 | location_t loc; | |
2249 | const cpp_token *tok; | |
2250 | ||
2251 | tok = cpp_get_token_with_location (m_parser, &loc); | |
2252 | ASSERT_NE (tok, NULL); | |
2253 | return tok; | |
2254 | } | |
2255 | ||
2256 | /* Verify that locations within string literals are correctly handled. */ | |
2257 | ||
2258 | /* Verify get_source_range_for_substring for token(s) at STRLOC, | |
2259 | using the string concatenation database for TEST. | |
2260 | ||
2261 | Assert that the character at index IDX is on EXPECTED_LINE, | |
2262 | and that it begins at column EXPECTED_START_COL and ends at | |
2263 | EXPECTED_FINISH_COL (unless the locations are beyond | |
2264 | LINE_MAP_MAX_LOCATION_WITH_COLS, in which case don't check their | |
2265 | columns). */ | |
2266 | ||
2267 | static void | |
2268 | assert_char_at_range (const location &loc, | |
2269 | lexer_test& test, | |
2270 | location_t strloc, enum cpp_ttype type, int idx, | |
2271 | int expected_line, int expected_start_col, | |
2272 | int expected_finish_col) | |
2273 | { | |
2274 | cpp_reader *pfile = test.m_parser; | |
2275 | string_concat_db *concats = &test.m_concats; | |
2276 | ||
a954833d | 2277 | source_range actual_range = source_range(); |
88fa5555 | 2278 | const char *err |
65e736c0 DM |
2279 | = get_source_range_for_char (pfile, concats, strloc, type, idx, |
2280 | &actual_range); | |
88fa5555 DM |
2281 | if (should_have_column_data_p (strloc)) |
2282 | ASSERT_EQ_AT (loc, NULL, err); | |
2283 | else | |
2284 | { | |
2285 | ASSERT_STREQ_AT (loc, | |
2286 | "range starts after LINE_MAP_MAX_LOCATION_WITH_COLS", | |
2287 | err); | |
2288 | return; | |
2289 | } | |
2290 | ||
2291 | int actual_start_line = LOCATION_LINE (actual_range.m_start); | |
2292 | ASSERT_EQ_AT (loc, expected_line, actual_start_line); | |
2293 | int actual_finish_line = LOCATION_LINE (actual_range.m_finish); | |
2294 | ASSERT_EQ_AT (loc, expected_line, actual_finish_line); | |
2295 | ||
2296 | if (should_have_column_data_p (actual_range.m_start)) | |
2297 | { | |
2298 | int actual_start_col = LOCATION_COLUMN (actual_range.m_start); | |
2299 | ASSERT_EQ_AT (loc, expected_start_col, actual_start_col); | |
2300 | } | |
2301 | if (should_have_column_data_p (actual_range.m_finish)) | |
2302 | { | |
2303 | int actual_finish_col = LOCATION_COLUMN (actual_range.m_finish); | |
2304 | ASSERT_EQ_AT (loc, expected_finish_col, actual_finish_col); | |
2305 | } | |
2306 | } | |
2307 | ||
2308 | /* Macro for calling assert_char_at_range, supplying SELFTEST_LOCATION for | |
2309 | the effective location of any errors. */ | |
2310 | ||
2311 | #define ASSERT_CHAR_AT_RANGE(LEXER_TEST, STRLOC, TYPE, IDX, EXPECTED_LINE, \ | |
2312 | EXPECTED_START_COL, EXPECTED_FINISH_COL) \ | |
2313 | assert_char_at_range (SELFTEST_LOCATION, (LEXER_TEST), (STRLOC), (TYPE), \ | |
2314 | (IDX), (EXPECTED_LINE), (EXPECTED_START_COL), \ | |
2315 | (EXPECTED_FINISH_COL)) | |
2316 | ||
2317 | /* Verify get_num_source_ranges_for_substring for token(s) at STRLOC, | |
2318 | using the string concatenation database for TEST. | |
2319 | ||
2320 | Assert that the token(s) at STRLOC contain EXPECTED_NUM_RANGES. */ | |
2321 | ||
2322 | static void | |
2323 | assert_num_substring_ranges (const location &loc, | |
2324 | lexer_test& test, | |
2325 | location_t strloc, | |
2326 | enum cpp_ttype type, | |
2327 | int expected_num_ranges) | |
2328 | { | |
2329 | cpp_reader *pfile = test.m_parser; | |
2330 | string_concat_db *concats = &test.m_concats; | |
2331 | ||
0e06d2b3 | 2332 | int actual_num_ranges = -1; |
88fa5555 DM |
2333 | const char *err |
2334 | = get_num_source_ranges_for_substring (pfile, concats, strloc, type, | |
2335 | &actual_num_ranges); | |
2336 | if (should_have_column_data_p (strloc)) | |
2337 | ASSERT_EQ_AT (loc, NULL, err); | |
2338 | else | |
2339 | { | |
2340 | ASSERT_STREQ_AT (loc, | |
2341 | "range starts after LINE_MAP_MAX_LOCATION_WITH_COLS", | |
2342 | err); | |
2343 | return; | |
2344 | } | |
2345 | ASSERT_EQ_AT (loc, expected_num_ranges, actual_num_ranges); | |
2346 | } | |
2347 | ||
2348 | /* Macro for calling assert_num_substring_ranges, supplying | |
2349 | SELFTEST_LOCATION for the effective location of any errors. */ | |
2350 | ||
2351 | #define ASSERT_NUM_SUBSTRING_RANGES(LEXER_TEST, STRLOC, TYPE, \ | |
2352 | EXPECTED_NUM_RANGES) \ | |
2353 | assert_num_substring_ranges (SELFTEST_LOCATION, (LEXER_TEST), (STRLOC), \ | |
2354 | (TYPE), (EXPECTED_NUM_RANGES)) | |
2355 | ||
2356 | ||
2357 | /* Verify that get_num_source_ranges_for_substring for token(s) at STRLOC | |
2358 | returns an error (using the string concatenation database for TEST). */ | |
2359 | ||
2360 | static void | |
2361 | assert_has_no_substring_ranges (const location &loc, | |
2362 | lexer_test& test, | |
2363 | location_t strloc, | |
2364 | enum cpp_ttype type, | |
2365 | const char *expected_err) | |
2366 | { | |
2367 | cpp_reader *pfile = test.m_parser; | |
2368 | string_concat_db *concats = &test.m_concats; | |
2369 | cpp_substring_ranges ranges; | |
2370 | const char *actual_err | |
2371 | = get_substring_ranges_for_loc (pfile, concats, strloc, | |
2372 | type, ranges); | |
2373 | if (should_have_column_data_p (strloc)) | |
2374 | ASSERT_STREQ_AT (loc, expected_err, actual_err); | |
2375 | else | |
2376 | ASSERT_STREQ_AT (loc, | |
2377 | "range starts after LINE_MAP_MAX_LOCATION_WITH_COLS", | |
2378 | actual_err); | |
2379 | } | |
2380 | ||
2381 | #define ASSERT_HAS_NO_SUBSTRING_RANGES(LEXER_TEST, STRLOC, TYPE, ERR) \ | |
2382 | assert_has_no_substring_ranges (SELFTEST_LOCATION, (LEXER_TEST), \ | |
2383 | (STRLOC), (TYPE), (ERR)) | |
2384 | ||
2385 | /* Lex a simple string literal. Verify the substring location data, before | |
2386 | and after running cpp_interpret_string on it. */ | |
2387 | ||
2388 | static void | |
2389 | test_lexer_string_locations_simple (const line_table_case &case_) | |
2390 | { | |
2391 | /* Digits 0-9 (with 0 at column 10), the simple way. | |
2392 | ....................000000000.11111111112.2222222223333333333 | |
2393 | ....................123456789.01234567890.1234567890123456789 | |
2394 | We add a trailing comment to ensure that we correctly locate | |
2395 | the end of the string literal token. */ | |
2396 | const char *content = " \"0123456789\" /* not a string */\n"; | |
2397 | lexer_test test (case_, content, NULL); | |
2398 | ||
2399 | /* Verify that we get the expected token back, with the correct | |
2400 | location information. */ | |
2401 | const cpp_token *tok = test.get_token (); | |
2402 | ASSERT_EQ (tok->type, CPP_STRING); | |
2403 | ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "\"0123456789\""); | |
2404 | ASSERT_TOKEN_LOC_EQ (tok, test.m_tempfile.get_filename (), 1, 9, 20); | |
2405 | ||
2406 | /* At this point in lexing, the quote characters are treated as part of | |
2407 | the string (they are stripped off by cpp_interpret_string). */ | |
2408 | ||
2409 | ASSERT_EQ (tok->val.str.len, 12); | |
2410 | ||
2411 | /* Verify that cpp_interpret_string works. */ | |
2412 | cpp_string dst_string; | |
2413 | const enum cpp_ttype type = CPP_STRING; | |
2414 | bool result = cpp_interpret_string (test.m_parser, &tok->val.str, 1, | |
2415 | &dst_string, type); | |
2416 | ASSERT_TRUE (result); | |
2417 | ASSERT_STREQ ("0123456789", (const char *)dst_string.text); | |
2418 | free (const_cast <unsigned char *> (dst_string.text)); | |
2419 | ||
2420 | /* Verify ranges of individual characters. This no longer includes the | |
bbd6fcf3 DM |
2421 | opening quote, but does include the closing quote. */ |
2422 | for (int i = 0; i <= 10; i++) | |
88fa5555 DM |
2423 | ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, i, 1, |
2424 | 10 + i, 10 + i); | |
2425 | ||
bbd6fcf3 | 2426 | ASSERT_NUM_SUBSTRING_RANGES (test, tok->src_loc, type, 11); |
88fa5555 DM |
2427 | } |
2428 | ||
2429 | /* As test_lexer_string_locations_simple, but use an EBCDIC execution | |
2430 | encoding. */ | |
2431 | ||
2432 | static void | |
2433 | test_lexer_string_locations_ebcdic (const line_table_case &case_) | |
2434 | { | |
2435 | /* EBCDIC support requires iconv. */ | |
2436 | if (!HAVE_ICONV) | |
2437 | return; | |
2438 | ||
2439 | /* Digits 0-9 (with 0 at column 10), the simple way. | |
2440 | ....................000000000.11111111112.2222222223333333333 | |
2441 | ....................123456789.01234567890.1234567890123456789 | |
2442 | We add a trailing comment to ensure that we correctly locate | |
2443 | the end of the string literal token. */ | |
2444 | const char *content = " \"0123456789\" /* not a string */\n"; | |
2445 | ebcdic_execution_charset use_ebcdic; | |
2446 | lexer_test test (case_, content, &use_ebcdic); | |
2447 | ||
2448 | /* Verify that we get the expected token back, with the correct | |
2449 | location information. */ | |
2450 | const cpp_token *tok = test.get_token (); | |
2451 | ASSERT_EQ (tok->type, CPP_STRING); | |
2452 | ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "\"0123456789\""); | |
2453 | ASSERT_TOKEN_LOC_EQ (tok, test.m_tempfile.get_filename (), 1, 9, 20); | |
2454 | ||
2455 | /* At this point in lexing, the quote characters are treated as part of | |
2456 | the string (they are stripped off by cpp_interpret_string). */ | |
2457 | ||
2458 | ASSERT_EQ (tok->val.str.len, 12); | |
2459 | ||
2460 | /* The remainder of the test requires an iconv implementation that | |
2461 | can convert from UTF-8 to the EBCDIC encoding requested above. */ | |
2462 | if (use_ebcdic.iconv_errors_occurred_p ()) | |
2463 | return; | |
2464 | ||
2465 | /* Verify that cpp_interpret_string works. */ | |
2466 | cpp_string dst_string; | |
2467 | const enum cpp_ttype type = CPP_STRING; | |
2468 | bool result = cpp_interpret_string (test.m_parser, &tok->val.str, 1, | |
2469 | &dst_string, type); | |
2470 | ASSERT_TRUE (result); | |
2471 | /* We should now have EBCDIC-encoded text, specifically | |
2472 | IBM1047-encoded (aka "EBCDIC 1047", or "Code page 1047"). | |
2473 | The digits 0-9 are encoded as 240-249 i.e. 0xf0-0xf9. */ | |
2474 | ASSERT_STREQ ("\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9", | |
2475 | (const char *)dst_string.text); | |
2476 | free (const_cast <unsigned char *> (dst_string.text)); | |
2477 | ||
2478 | /* Verify that we don't attempt to record substring location information | |
2479 | for such cases. */ | |
2480 | ASSERT_HAS_NO_SUBSTRING_RANGES | |
2481 | (test, tok->src_loc, type, | |
2482 | "execution character set != source character set"); | |
2483 | } | |
2484 | ||
2485 | /* Lex a string literal containing a hex-escaped character. | |
2486 | Verify the substring location data, before and after running | |
2487 | cpp_interpret_string on it. */ | |
2488 | ||
2489 | static void | |
2490 | test_lexer_string_locations_hex (const line_table_case &case_) | |
2491 | { | |
2492 | /* Digits 0-9, expressing digit 5 in ASCII as "\x35" | |
2493 | and with a space in place of digit 6, to terminate the escaped | |
2494 | hex code. | |
2495 | ....................000000000.111111.11112222. | |
2496 | ....................123456789.012345.67890123. */ | |
2497 | const char *content = " \"01234\\x35 789\"\n"; | |
2498 | lexer_test test (case_, content, NULL); | |
2499 | ||
2500 | /* Verify that we get the expected token back, with the correct | |
2501 | location information. */ | |
2502 | const cpp_token *tok = test.get_token (); | |
2503 | ASSERT_EQ (tok->type, CPP_STRING); | |
2504 | ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "\"01234\\x35 789\""); | |
2505 | ASSERT_TOKEN_LOC_EQ (tok, test.m_tempfile.get_filename (), 1, 9, 23); | |
2506 | ||
2507 | /* At this point in lexing, the quote characters are treated as part of | |
2508 | the string (they are stripped off by cpp_interpret_string). */ | |
2509 | ASSERT_EQ (tok->val.str.len, 15); | |
2510 | ||
2511 | /* Verify that cpp_interpret_string works. */ | |
2512 | cpp_string dst_string; | |
2513 | const enum cpp_ttype type = CPP_STRING; | |
2514 | bool result = cpp_interpret_string (test.m_parser, &tok->val.str, 1, | |
2515 | &dst_string, type); | |
2516 | ASSERT_TRUE (result); | |
2517 | ASSERT_STREQ ("012345 789", (const char *)dst_string.text); | |
2518 | free (const_cast <unsigned char *> (dst_string.text)); | |
2519 | ||
2520 | /* Verify ranges of individual characters. This no longer includes the | |
bbd6fcf3 | 2521 | opening quote, but does include the closing quote. */ |
88fa5555 DM |
2522 | for (int i = 0; i <= 4; i++) |
2523 | ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, i, 1, 10 + i, 10 + i); | |
2524 | ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, 5, 1, 15, 18); | |
bbd6fcf3 | 2525 | for (int i = 6; i <= 10; i++) |
88fa5555 DM |
2526 | ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, i, 1, 13 + i, 13 + i); |
2527 | ||
bbd6fcf3 | 2528 | ASSERT_NUM_SUBSTRING_RANGES (test, tok->src_loc, type, 11); |
88fa5555 DM |
2529 | } |
2530 | ||
2531 | /* Lex a string literal containing an octal-escaped character. | |
2532 | Verify the substring location data after running cpp_interpret_string | |
2533 | on it. */ | |
2534 | ||
2535 | static void | |
2536 | test_lexer_string_locations_oct (const line_table_case &case_) | |
2537 | { | |
2538 | /* Digits 0-9, expressing digit 5 in ASCII as "\065" | |
2539 | and with a space in place of digit 6, to terminate the escaped | |
2540 | octal code. | |
2541 | ....................000000000.111111.11112222.2222223333333333444 | |
2542 | ....................123456789.012345.67890123.4567890123456789012 */ | |
2543 | const char *content = " \"01234\\065 789\" /* not a string */\n"; | |
2544 | lexer_test test (case_, content, NULL); | |
2545 | ||
2546 | /* Verify that we get the expected token back, with the correct | |
2547 | location information. */ | |
2548 | const cpp_token *tok = test.get_token (); | |
2549 | ASSERT_EQ (tok->type, CPP_STRING); | |
2550 | ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "\"01234\\065 789\""); | |
2551 | ||
2552 | /* Verify that cpp_interpret_string works. */ | |
2553 | cpp_string dst_string; | |
2554 | const enum cpp_ttype type = CPP_STRING; | |
2555 | bool result = cpp_interpret_string (test.m_parser, &tok->val.str, 1, | |
2556 | &dst_string, type); | |
2557 | ASSERT_TRUE (result); | |
2558 | ASSERT_STREQ ("012345 789", (const char *)dst_string.text); | |
2559 | free (const_cast <unsigned char *> (dst_string.text)); | |
2560 | ||
2561 | /* Verify ranges of individual characters. This no longer includes the | |
bbd6fcf3 | 2562 | opening quote, but does include the closing quote. */ |
88fa5555 DM |
2563 | for (int i = 0; i < 5; i++) |
2564 | ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, i, 1, 10 + i, 10 + i); | |
2565 | ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, 5, 1, 15, 18); | |
bbd6fcf3 | 2566 | for (int i = 6; i <= 10; i++) |
88fa5555 DM |
2567 | ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, i, 1, 13 + i, 13 + i); |
2568 | ||
bbd6fcf3 | 2569 | ASSERT_NUM_SUBSTRING_RANGES (test, tok->src_loc, type, 11); |
88fa5555 DM |
2570 | } |
2571 | ||
2572 | /* Test of string literal containing letter escapes. */ | |
2573 | ||
2574 | static void | |
2575 | test_lexer_string_locations_letter_escape_1 (const line_table_case &case_) | |
2576 | { | |
2577 | /* The string "\tfoo\\\nbar" i.e. tab, "foo", backslash, newline, bar. | |
2578 | .....................000000000.1.11111.1.1.11222.22222223333333 | |
2579 | .....................123456789.0.12345.6.7.89012.34567890123456. */ | |
2580 | const char *content = (" \"\\tfoo\\\\\\nbar\" /* non-str */\n"); | |
2581 | lexer_test test (case_, content, NULL); | |
2582 | ||
2583 | /* Verify that we get the expected tokens back. */ | |
2584 | const cpp_token *tok = test.get_token (); | |
2585 | ASSERT_EQ (tok->type, CPP_STRING); | |
2586 | ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "\"\\tfoo\\\\\\nbar\""); | |
2587 | ||
2588 | /* Verify ranges of individual characters. */ | |
2589 | /* "\t". */ | |
2590 | ASSERT_CHAR_AT_RANGE (test, tok->src_loc, CPP_STRING, | |
2591 | 0, 1, 10, 11); | |
2592 | /* "foo". */ | |
2593 | for (int i = 1; i <= 3; i++) | |
2594 | ASSERT_CHAR_AT_RANGE (test, tok->src_loc, CPP_STRING, | |
2595 | i, 1, 11 + i, 11 + i); | |
2596 | /* "\\" and "\n". */ | |
2597 | ASSERT_CHAR_AT_RANGE (test, tok->src_loc, CPP_STRING, | |
2598 | 4, 1, 15, 16); | |
2599 | ASSERT_CHAR_AT_RANGE (test, tok->src_loc, CPP_STRING, | |
2600 | 5, 1, 17, 18); | |
2601 | ||
bbd6fcf3 DM |
2602 | /* "bar" and closing quote for nul-terminator. */ |
2603 | for (int i = 6; i <= 9; i++) | |
88fa5555 DM |
2604 | ASSERT_CHAR_AT_RANGE (test, tok->src_loc, CPP_STRING, |
2605 | i, 1, 13 + i, 13 + i); | |
2606 | ||
bbd6fcf3 | 2607 | ASSERT_NUM_SUBSTRING_RANGES (test, tok->src_loc, CPP_STRING, 10); |
88fa5555 DM |
2608 | } |
2609 | ||
2610 | /* Another test of a string literal containing a letter escape. | |
2611 | Based on string seen in | |
2612 | printf ("%-%\n"); | |
2613 | in gcc.dg/format/c90-printf-1.c. */ | |
2614 | ||
2615 | static void | |
2616 | test_lexer_string_locations_letter_escape_2 (const line_table_case &case_) | |
2617 | { | |
2618 | /* .....................000000000.1111.11.1111.22222222223. | |
2619 | .....................123456789.0123.45.6789.01234567890. */ | |
2620 | const char *content = (" \"%-%\\n\" /* non-str */\n"); | |
2621 | lexer_test test (case_, content, NULL); | |
2622 | ||
2623 | /* Verify that we get the expected tokens back. */ | |
2624 | const cpp_token *tok = test.get_token (); | |
2625 | ASSERT_EQ (tok->type, CPP_STRING); | |
2626 | ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "\"%-%\\n\""); | |
2627 | ||
2628 | /* Verify ranges of individual characters. */ | |
2629 | /* "%-%". */ | |
2630 | for (int i = 0; i < 3; i++) | |
2631 | ASSERT_CHAR_AT_RANGE (test, tok->src_loc, CPP_STRING, | |
2632 | i, 1, 10 + i, 10 + i); | |
2633 | /* "\n". */ | |
2634 | ASSERT_CHAR_AT_RANGE (test, tok->src_loc, CPP_STRING, | |
2635 | 3, 1, 13, 14); | |
2636 | ||
bbd6fcf3 DM |
2637 | /* Closing quote for nul-terminator. */ |
2638 | ASSERT_CHAR_AT_RANGE (test, tok->src_loc, CPP_STRING, | |
2639 | 4, 1, 15, 15); | |
2640 | ||
2641 | ASSERT_NUM_SUBSTRING_RANGES (test, tok->src_loc, CPP_STRING, 5); | |
88fa5555 DM |
2642 | } |
2643 | ||
2644 | /* Lex a string literal containing UCN 4 characters. | |
2645 | Verify the substring location data after running cpp_interpret_string | |
2646 | on it. */ | |
2647 | ||
2648 | static void | |
2649 | test_lexer_string_locations_ucn4 (const line_table_case &case_) | |
2650 | { | |
2651 | /* Digits 0-9, expressing digits 5 and 6 as Roman numerals expressed | |
2652 | as UCN 4. | |
2653 | ....................000000000.111111.111122.222222223.33333333344444 | |
2654 | ....................123456789.012345.678901.234567890.12345678901234 */ | |
2655 | const char *content = " \"01234\\u2174\\u2175789\" /* non-str */\n"; | |
2656 | lexer_test test (case_, content, NULL); | |
2657 | ||
2658 | /* Verify that we get the expected token back, with the correct | |
2659 | location information. */ | |
2660 | const cpp_token *tok = test.get_token (); | |
2661 | ASSERT_EQ (tok->type, CPP_STRING); | |
2662 | ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "\"01234\\u2174\\u2175789\""); | |
2663 | ||
2664 | /* Verify that cpp_interpret_string works. | |
2665 | The string should be encoded in the execution character | |
2666 | set. Assuming that that is UTF-8, we should have the following: | |
2667 | ----------- ---- ----- ------- ---------------- | |
2668 | Byte offset Byte Octal Unicode Source Column(s) | |
2669 | ----------- ---- ----- ------- ---------------- | |
2670 | 0 0x30 '0' 10 | |
2671 | 1 0x31 '1' 11 | |
2672 | 2 0x32 '2' 12 | |
2673 | 3 0x33 '3' 13 | |
2674 | 4 0x34 '4' 14 | |
2675 | 5 0xE2 \342 U+2174 15-20 | |
2676 | 6 0x85 \205 (cont) 15-20 | |
2677 | 7 0xB4 \264 (cont) 15-20 | |
2678 | 8 0xE2 \342 U+2175 21-26 | |
2679 | 9 0x85 \205 (cont) 21-26 | |
2680 | 10 0xB5 \265 (cont) 21-26 | |
2681 | 11 0x37 '7' 27 | |
2682 | 12 0x38 '8' 28 | |
2683 | 13 0x39 '9' 29 | |
bbd6fcf3 | 2684 | 14 0x00 30 (closing quote) |
88fa5555 DM |
2685 | ----------- ---- ----- ------- ---------------. */ |
2686 | ||
2687 | cpp_string dst_string; | |
2688 | const enum cpp_ttype type = CPP_STRING; | |
2689 | bool result = cpp_interpret_string (test.m_parser, &tok->val.str, 1, | |
2690 | &dst_string, type); | |
2691 | ASSERT_TRUE (result); | |
2692 | ASSERT_STREQ ("01234\342\205\264\342\205\265789", | |
2693 | (const char *)dst_string.text); | |
2694 | free (const_cast <unsigned char *> (dst_string.text)); | |
2695 | ||
2696 | /* Verify ranges of individual characters. This no longer includes the | |
bbd6fcf3 | 2697 | opening quote, but does include the closing quote. |
88fa5555 DM |
2698 | '01234'. */ |
2699 | for (int i = 0; i <= 4; i++) | |
2700 | ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, i, 1, 10 + i, 10 + i); | |
2701 | /* U+2174. */ | |
2702 | for (int i = 5; i <= 7; i++) | |
2703 | ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, i, 1, 15, 20); | |
2704 | /* U+2175. */ | |
2705 | for (int i = 8; i <= 10; i++) | |
2706 | ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, i, 1, 21, 26); | |
bbd6fcf3 DM |
2707 | /* '789' and nul terminator */ |
2708 | for (int i = 11; i <= 14; i++) | |
88fa5555 DM |
2709 | ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, i, 1, 16 + i, 16 + i); |
2710 | ||
bbd6fcf3 | 2711 | ASSERT_NUM_SUBSTRING_RANGES (test, tok->src_loc, type, 15); |
88fa5555 DM |
2712 | } |
2713 | ||
2714 | /* Lex a string literal containing UCN 8 characters. | |
2715 | Verify the substring location data after running cpp_interpret_string | |
2716 | on it. */ | |
2717 | ||
2718 | static void | |
2719 | test_lexer_string_locations_ucn8 (const line_table_case &case_) | |
2720 | { | |
2721 | /* Digits 0-9, expressing digits 5 and 6 as Roman numerals as UCN 8. | |
2722 | ....................000000000.111111.1111222222.2222333333333.344444 | |
2723 | ....................123456789.012345.6789012345.6789012345678.901234 */ | |
2724 | const char *content = " \"01234\\U00002174\\U00002175789\" /* */\n"; | |
2725 | lexer_test test (case_, content, NULL); | |
2726 | ||
2727 | /* Verify that we get the expected token back, with the correct | |
2728 | location information. */ | |
2729 | const cpp_token *tok = test.get_token (); | |
2730 | ASSERT_EQ (tok->type, CPP_STRING); | |
2731 | ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, | |
2732 | "\"01234\\U00002174\\U00002175789\""); | |
2733 | ||
2734 | /* Verify that cpp_interpret_string works. | |
2735 | The UTF-8 encoding of the string is identical to that from | |
2736 | the ucn4 testcase above; the only difference is the column | |
2737 | locations. */ | |
2738 | cpp_string dst_string; | |
2739 | const enum cpp_ttype type = CPP_STRING; | |
2740 | bool result = cpp_interpret_string (test.m_parser, &tok->val.str, 1, | |
2741 | &dst_string, type); | |
2742 | ASSERT_TRUE (result); | |
2743 | ASSERT_STREQ ("01234\342\205\264\342\205\265789", | |
2744 | (const char *)dst_string.text); | |
2745 | free (const_cast <unsigned char *> (dst_string.text)); | |
2746 | ||
2747 | /* Verify ranges of individual characters. This no longer includes the | |
bbd6fcf3 | 2748 | opening quote, but does include the closing quote. |
88fa5555 DM |
2749 | '01234'. */ |
2750 | for (int i = 0; i <= 4; i++) | |
2751 | ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, i, 1, 10 + i, 10 + i); | |
2752 | /* U+2174. */ | |
2753 | for (int i = 5; i <= 7; i++) | |
2754 | ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, i, 1, 15, 24); | |
2755 | /* U+2175. */ | |
2756 | for (int i = 8; i <= 10; i++) | |
2757 | ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, i, 1, 25, 34); | |
2758 | /* '789' at columns 35-37 */ | |
2759 | for (int i = 11; i <= 13; i++) | |
2760 | ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, i, 1, 24 + i, 24 + i); | |
bbd6fcf3 DM |
2761 | /* Closing quote/nul-terminator at column 38. */ |
2762 | ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, 14, 1, 38, 38); | |
88fa5555 | 2763 | |
bbd6fcf3 | 2764 | ASSERT_NUM_SUBSTRING_RANGES (test, tok->src_loc, type, 15); |
88fa5555 DM |
2765 | } |
2766 | ||
2767 | /* Fetch a big-endian 32-bit value and convert to host endianness. */ | |
2768 | ||
2769 | static uint32_t | |
2770 | uint32_from_big_endian (const uint32_t *ptr_be_value) | |
2771 | { | |
2772 | const unsigned char *buf = (const unsigned char *)ptr_be_value; | |
2773 | return (((uint32_t) buf[0] << 24) | |
2774 | | ((uint32_t) buf[1] << 16) | |
2775 | | ((uint32_t) buf[2] << 8) | |
2776 | | (uint32_t) buf[3]); | |
2777 | } | |
2778 | ||
2779 | /* Lex a wide string literal and verify that attempts to read substring | |
2780 | location data from it fail gracefully. */ | |
2781 | ||
2782 | static void | |
2783 | test_lexer_string_locations_wide_string (const line_table_case &case_) | |
2784 | { | |
2785 | /* Digits 0-9. | |
2786 | ....................000000000.11111111112.22222222233333 | |
2787 | ....................123456789.01234567890.12345678901234 */ | |
2788 | const char *content = " L\"0123456789\" /* non-str */\n"; | |
2789 | lexer_test test (case_, content, NULL); | |
2790 | ||
2791 | /* Verify that we get the expected token back, with the correct | |
2792 | location information. */ | |
2793 | const cpp_token *tok = test.get_token (); | |
2794 | ASSERT_EQ (tok->type, CPP_WSTRING); | |
2795 | ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "L\"0123456789\""); | |
2796 | ||
2797 | /* Verify that cpp_interpret_string works, using CPP_WSTRING. */ | |
2798 | cpp_string dst_string; | |
2799 | const enum cpp_ttype type = CPP_WSTRING; | |
2800 | bool result = cpp_interpret_string (test.m_parser, &tok->val.str, 1, | |
2801 | &dst_string, type); | |
2802 | ASSERT_TRUE (result); | |
2803 | /* The cpp_reader defaults to big-endian with | |
2804 | CHAR_BIT * sizeof (int) for the wchar_precision, so dst_string should | |
2805 | now be encoded as UTF-32BE. */ | |
2806 | const uint32_t *be32_chars = (const uint32_t *)dst_string.text; | |
2807 | ASSERT_EQ ('0', uint32_from_big_endian (&be32_chars[0])); | |
2808 | ASSERT_EQ ('5', uint32_from_big_endian (&be32_chars[5])); | |
2809 | ASSERT_EQ ('9', uint32_from_big_endian (&be32_chars[9])); | |
2810 | ASSERT_EQ (0, uint32_from_big_endian (&be32_chars[10])); | |
2811 | free (const_cast <unsigned char *> (dst_string.text)); | |
2812 | ||
2813 | /* We don't yet support generating substring location information | |
2814 | for L"" strings. */ | |
2815 | ASSERT_HAS_NO_SUBSTRING_RANGES | |
2816 | (test, tok->src_loc, type, | |
2817 | "execution character set != source character set"); | |
2818 | } | |
2819 | ||
2820 | /* Fetch a big-endian 16-bit value and convert to host endianness. */ | |
2821 | ||
2822 | static uint16_t | |
2823 | uint16_from_big_endian (const uint16_t *ptr_be_value) | |
2824 | { | |
2825 | const unsigned char *buf = (const unsigned char *)ptr_be_value; | |
2826 | return ((uint16_t) buf[0] << 8) | (uint16_t) buf[1]; | |
2827 | } | |
2828 | ||
2829 | /* Lex a u"" string literal and verify that attempts to read substring | |
2830 | location data from it fail gracefully. */ | |
2831 | ||
2832 | static void | |
2833 | test_lexer_string_locations_string16 (const line_table_case &case_) | |
2834 | { | |
2835 | /* Digits 0-9. | |
2836 | ....................000000000.11111111112.22222222233333 | |
2837 | ....................123456789.01234567890.12345678901234 */ | |
2838 | const char *content = " u\"0123456789\" /* non-str */\n"; | |
2839 | lexer_test test (case_, content, NULL); | |
2840 | ||
2841 | /* Verify that we get the expected token back, with the correct | |
2842 | location information. */ | |
2843 | const cpp_token *tok = test.get_token (); | |
2844 | ASSERT_EQ (tok->type, CPP_STRING16); | |
2845 | ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "u\"0123456789\""); | |
2846 | ||
2847 | /* Verify that cpp_interpret_string works, using CPP_STRING16. */ | |
2848 | cpp_string dst_string; | |
2849 | const enum cpp_ttype type = CPP_STRING16; | |
2850 | bool result = cpp_interpret_string (test.m_parser, &tok->val.str, 1, | |
2851 | &dst_string, type); | |
2852 | ASSERT_TRUE (result); | |
2853 | ||
2854 | /* The cpp_reader defaults to big-endian, so dst_string should | |
2855 | now be encoded as UTF-16BE. */ | |
2856 | const uint16_t *be16_chars = (const uint16_t *)dst_string.text; | |
2857 | ASSERT_EQ ('0', uint16_from_big_endian (&be16_chars[0])); | |
2858 | ASSERT_EQ ('5', uint16_from_big_endian (&be16_chars[5])); | |
2859 | ASSERT_EQ ('9', uint16_from_big_endian (&be16_chars[9])); | |
2860 | ASSERT_EQ (0, uint16_from_big_endian (&be16_chars[10])); | |
2861 | free (const_cast <unsigned char *> (dst_string.text)); | |
2862 | ||
2863 | /* We don't yet support generating substring location information | |
2864 | for L"" strings. */ | |
2865 | ASSERT_HAS_NO_SUBSTRING_RANGES | |
2866 | (test, tok->src_loc, type, | |
2867 | "execution character set != source character set"); | |
2868 | } | |
2869 | ||
2870 | /* Lex a U"" string literal and verify that attempts to read substring | |
2871 | location data from it fail gracefully. */ | |
2872 | ||
2873 | static void | |
2874 | test_lexer_string_locations_string32 (const line_table_case &case_) | |
2875 | { | |
2876 | /* Digits 0-9. | |
2877 | ....................000000000.11111111112.22222222233333 | |
2878 | ....................123456789.01234567890.12345678901234 */ | |
2879 | const char *content = " U\"0123456789\" /* non-str */\n"; | |
2880 | lexer_test test (case_, content, NULL); | |
2881 | ||
2882 | /* Verify that we get the expected token back, with the correct | |
2883 | location information. */ | |
2884 | const cpp_token *tok = test.get_token (); | |
2885 | ASSERT_EQ (tok->type, CPP_STRING32); | |
2886 | ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "U\"0123456789\""); | |
2887 | ||
2888 | /* Verify that cpp_interpret_string works, using CPP_STRING32. */ | |
2889 | cpp_string dst_string; | |
2890 | const enum cpp_ttype type = CPP_STRING32; | |
2891 | bool result = cpp_interpret_string (test.m_parser, &tok->val.str, 1, | |
2892 | &dst_string, type); | |
2893 | ASSERT_TRUE (result); | |
2894 | ||
2895 | /* The cpp_reader defaults to big-endian, so dst_string should | |
2896 | now be encoded as UTF-32BE. */ | |
2897 | const uint32_t *be32_chars = (const uint32_t *)dst_string.text; | |
2898 | ASSERT_EQ ('0', uint32_from_big_endian (&be32_chars[0])); | |
2899 | ASSERT_EQ ('5', uint32_from_big_endian (&be32_chars[5])); | |
2900 | ASSERT_EQ ('9', uint32_from_big_endian (&be32_chars[9])); | |
2901 | ASSERT_EQ (0, uint32_from_big_endian (&be32_chars[10])); | |
2902 | free (const_cast <unsigned char *> (dst_string.text)); | |
2903 | ||
2904 | /* We don't yet support generating substring location information | |
2905 | for L"" strings. */ | |
2906 | ASSERT_HAS_NO_SUBSTRING_RANGES | |
2907 | (test, tok->src_loc, type, | |
2908 | "execution character set != source character set"); | |
2909 | } | |
2910 | ||
2911 | /* Lex a u8-string literal. | |
2912 | Verify the substring location data after running cpp_interpret_string | |
2913 | on it. */ | |
2914 | ||
2915 | static void | |
2916 | test_lexer_string_locations_u8 (const line_table_case &case_) | |
2917 | { | |
2918 | /* Digits 0-9. | |
2919 | ....................000000000.11111111112.22222222233333 | |
2920 | ....................123456789.01234567890.12345678901234 */ | |
2921 | const char *content = " u8\"0123456789\" /* non-str */\n"; | |
2922 | lexer_test test (case_, content, NULL); | |
2923 | ||
2924 | /* Verify that we get the expected token back, with the correct | |
2925 | location information. */ | |
2926 | const cpp_token *tok = test.get_token (); | |
2927 | ASSERT_EQ (tok->type, CPP_UTF8STRING); | |
2928 | ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "u8\"0123456789\""); | |
2929 | ||
2930 | /* Verify that cpp_interpret_string works. */ | |
2931 | cpp_string dst_string; | |
2932 | const enum cpp_ttype type = CPP_STRING; | |
2933 | bool result = cpp_interpret_string (test.m_parser, &tok->val.str, 1, | |
2934 | &dst_string, type); | |
2935 | ASSERT_TRUE (result); | |
2936 | ASSERT_STREQ ("0123456789", (const char *)dst_string.text); | |
2937 | free (const_cast <unsigned char *> (dst_string.text)); | |
2938 | ||
2939 | /* Verify ranges of individual characters. This no longer includes the | |
bbd6fcf3 DM |
2940 | opening quote, but does include the closing quote. */ |
2941 | for (int i = 0; i <= 10; i++) | |
88fa5555 DM |
2942 | ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, i, 1, 10 + i, 10 + i); |
2943 | } | |
2944 | ||
2945 | /* Lex a string literal containing UTF-8 source characters. | |
2946 | Verify the substring location data after running cpp_interpret_string | |
2947 | on it. */ | |
2948 | ||
2949 | static void | |
2950 | test_lexer_string_locations_utf8_source (const line_table_case &case_) | |
2951 | { | |
2952 | /* This string literal is written out to the source file as UTF-8, | |
2953 | and is of the form "before mojibake after", where "mojibake" | |
2954 | is written as the following four unicode code points: | |
2955 | U+6587 CJK UNIFIED IDEOGRAPH-6587 | |
2956 | U+5B57 CJK UNIFIED IDEOGRAPH-5B57 | |
2957 | U+5316 CJK UNIFIED IDEOGRAPH-5316 | |
2958 | U+3051 HIRAGANA LETTER KE. | |
2959 | Each of these is 3 bytes wide when encoded in UTF-8, whereas the | |
2960 | "before" and "after" are 1 byte per unicode character. | |
2961 | ||
2962 | The numbering shown are "columns", which are *byte* numbers within | |
2963 | the line, rather than unicode character numbers. | |
2964 | ||
2965 | .................... 000000000.1111111. | |
2966 | .................... 123456789.0123456. */ | |
2967 | const char *content = (" \"before " | |
2968 | /* U+6587 CJK UNIFIED IDEOGRAPH-6587 | |
2969 | UTF-8: 0xE6 0x96 0x87 | |
2970 | C octal escaped UTF-8: \346\226\207 | |
2971 | "column" numbers: 17-19. */ | |
2972 | "\346\226\207" | |
2973 | ||
2974 | /* U+5B57 CJK UNIFIED IDEOGRAPH-5B57 | |
2975 | UTF-8: 0xE5 0xAD 0x97 | |
2976 | C octal escaped UTF-8: \345\255\227 | |
2977 | "column" numbers: 20-22. */ | |
2978 | "\345\255\227" | |
2979 | ||
2980 | /* U+5316 CJK UNIFIED IDEOGRAPH-5316 | |
2981 | UTF-8: 0xE5 0x8C 0x96 | |
2982 | C octal escaped UTF-8: \345\214\226 | |
2983 | "column" numbers: 23-25. */ | |
2984 | "\345\214\226" | |
2985 | ||
2986 | /* U+3051 HIRAGANA LETTER KE | |
2987 | UTF-8: 0xE3 0x81 0x91 | |
2988 | C octal escaped UTF-8: \343\201\221 | |
2989 | "column" numbers: 26-28. */ | |
2990 | "\343\201\221" | |
2991 | ||
2992 | /* column numbers 29 onwards | |
2993 | 2333333.33334444444444 | |
2994 | 9012345.67890123456789. */ | |
2995 | " after\" /* non-str */\n"); | |
2996 | lexer_test test (case_, content, NULL); | |
2997 | ||
2998 | /* Verify that we get the expected token back, with the correct | |
2999 | location information. */ | |
3000 | const cpp_token *tok = test.get_token (); | |
3001 | ASSERT_EQ (tok->type, CPP_STRING); | |
3002 | ASSERT_TOKEN_AS_TEXT_EQ | |
3003 | (test.m_parser, tok, | |
3004 | "\"before \346\226\207\345\255\227\345\214\226\343\201\221 after\""); | |
3005 | ||
3006 | /* Verify that cpp_interpret_string works. */ | |
3007 | cpp_string dst_string; | |
3008 | const enum cpp_ttype type = CPP_STRING; | |
3009 | bool result = cpp_interpret_string (test.m_parser, &tok->val.str, 1, | |
3010 | &dst_string, type); | |
3011 | ASSERT_TRUE (result); | |
3012 | ASSERT_STREQ | |
3013 | ("before \346\226\207\345\255\227\345\214\226\343\201\221 after", | |
3014 | (const char *)dst_string.text); | |
3015 | free (const_cast <unsigned char *> (dst_string.text)); | |
3016 | ||
3017 | /* Verify ranges of individual characters. This no longer includes the | |
bbd6fcf3 | 3018 | opening quote, but does include the closing quote. |
88fa5555 | 3019 | Assuming that both source and execution encodings are UTF-8, we have |
bbd6fcf3 | 3020 | a run of 25 octets in each, plus the NUL terminator. */ |
88fa5555 DM |
3021 | for (int i = 0; i < 25; i++) |
3022 | ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, i, 1, 10 + i, 10 + i); | |
bbd6fcf3 DM |
3023 | /* NUL-terminator should use the closing quote at column 35. */ |
3024 | ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, 25, 1, 35, 35); | |
88fa5555 | 3025 | |
bbd6fcf3 | 3026 | ASSERT_NUM_SUBSTRING_RANGES (test, tok->src_loc, type, 26); |
88fa5555 DM |
3027 | } |
3028 | ||
3029 | /* Test of string literal concatenation. */ | |
3030 | ||
3031 | static void | |
3032 | test_lexer_string_locations_concatenation_1 (const line_table_case &case_) | |
3033 | { | |
3034 | /* Digits 0-9. | |
3035 | .....................000000000.111111.11112222222222 | |
3036 | .....................123456789.012345.67890123456789. */ | |
3037 | const char *content = (" \"01234\" /* non-str */\n" | |
3038 | " \"56789\" /* non-str */\n"); | |
3039 | lexer_test test (case_, content, NULL); | |
3040 | ||
3041 | location_t input_locs[2]; | |
3042 | ||
3043 | /* Verify that we get the expected tokens back. */ | |
3044 | auto_vec <cpp_string> input_strings; | |
3045 | const cpp_token *tok_a = test.get_token (); | |
3046 | ASSERT_EQ (tok_a->type, CPP_STRING); | |
3047 | ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok_a, "\"01234\""); | |
3048 | input_strings.safe_push (tok_a->val.str); | |
3049 | input_locs[0] = tok_a->src_loc; | |
3050 | ||
3051 | const cpp_token *tok_b = test.get_token (); | |
3052 | ASSERT_EQ (tok_b->type, CPP_STRING); | |
3053 | ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok_b, "\"56789\""); | |
3054 | input_strings.safe_push (tok_b->val.str); | |
3055 | input_locs[1] = tok_b->src_loc; | |
3056 | ||
3057 | /* Verify that cpp_interpret_string works. */ | |
3058 | cpp_string dst_string; | |
3059 | const enum cpp_ttype type = CPP_STRING; | |
3060 | bool result = cpp_interpret_string (test.m_parser, | |
3061 | input_strings.address (), 2, | |
3062 | &dst_string, type); | |
3063 | ASSERT_TRUE (result); | |
3064 | ASSERT_STREQ ("0123456789", (const char *)dst_string.text); | |
3065 | free (const_cast <unsigned char *> (dst_string.text)); | |
3066 | ||
3067 | /* Simulate c-lex.c's lex_string in order to record concatenation. */ | |
3068 | test.m_concats.record_string_concatenation (2, input_locs); | |
3069 | ||
3070 | location_t initial_loc = input_locs[0]; | |
3071 | ||
bbd6fcf3 | 3072 | /* "01234" on line 1. */ |
88fa5555 DM |
3073 | for (int i = 0; i <= 4; i++) |
3074 | ASSERT_CHAR_AT_RANGE (test, initial_loc, type, i, 1, 10 + i, 10 + i); | |
bbd6fcf3 DM |
3075 | /* "56789" in line 2, plus its closing quote for the nul terminator. */ |
3076 | for (int i = 5; i <= 10; i++) | |
88fa5555 DM |
3077 | ASSERT_CHAR_AT_RANGE (test, initial_loc, type, i, 2, 5 + i, 5 + i); |
3078 | ||
bbd6fcf3 | 3079 | ASSERT_NUM_SUBSTRING_RANGES (test, initial_loc, type, 11); |
88fa5555 DM |
3080 | } |
3081 | ||
3082 | /* Another test of string literal concatenation. */ | |
3083 | ||
3084 | static void | |
3085 | test_lexer_string_locations_concatenation_2 (const line_table_case &case_) | |
3086 | { | |
3087 | /* Digits 0-9. | |
3088 | .....................000000000.111.11111112222222 | |
3089 | .....................123456789.012.34567890123456. */ | |
3090 | const char *content = (" \"01\" /* non-str */\n" | |
3091 | " \"23\" /* non-str */\n" | |
3092 | " \"45\" /* non-str */\n" | |
3093 | " \"67\" /* non-str */\n" | |
3094 | " \"89\" /* non-str */\n"); | |
3095 | lexer_test test (case_, content, NULL); | |
3096 | ||
3097 | auto_vec <cpp_string> input_strings; | |
3098 | location_t input_locs[5]; | |
3099 | ||
3100 | /* Verify that we get the expected tokens back. */ | |
3101 | for (int i = 0; i < 5; i++) | |
3102 | { | |
3103 | const cpp_token *tok = test.get_token (); | |
3104 | ASSERT_EQ (tok->type, CPP_STRING); | |
3105 | input_strings.safe_push (tok->val.str); | |
3106 | input_locs[i] = tok->src_loc; | |
3107 | } | |
3108 | ||
3109 | /* Verify that cpp_interpret_string works. */ | |
3110 | cpp_string dst_string; | |
3111 | const enum cpp_ttype type = CPP_STRING; | |
3112 | bool result = cpp_interpret_string (test.m_parser, | |
3113 | input_strings.address (), 5, | |
3114 | &dst_string, type); | |
3115 | ASSERT_TRUE (result); | |
3116 | ASSERT_STREQ ("0123456789", (const char *)dst_string.text); | |
3117 | free (const_cast <unsigned char *> (dst_string.text)); | |
3118 | ||
3119 | /* Simulate c-lex.c's lex_string in order to record concatenation. */ | |
3120 | test.m_concats.record_string_concatenation (5, input_locs); | |
3121 | ||
3122 | location_t initial_loc = input_locs[0]; | |
3123 | ||
3124 | /* Within ASSERT_CHAR_AT_RANGE (actually assert_char_at_range), we can | |
3125 | detect if the initial loc is after LINE_MAP_MAX_LOCATION_WITH_COLS | |
3126 | and expect get_source_range_for_substring to fail. | |
3127 | However, for a string concatenation test, we can have a case | |
3128 | where the initial string is fully before LINE_MAP_MAX_LOCATION_WITH_COLS, | |
3129 | but subsequent strings can be after it. | |
3130 | Attempting to detect this within assert_char_at_range | |
3131 | would overcomplicate the logic for the common test cases, so | |
3132 | we detect it here. */ | |
3133 | if (should_have_column_data_p (input_locs[0]) | |
3134 | && !should_have_column_data_p (input_locs[4])) | |
3135 | { | |
3136 | /* Verify that get_source_range_for_substring gracefully rejects | |
3137 | this case. */ | |
3138 | source_range actual_range; | |
3139 | const char *err | |
65e736c0 DM |
3140 | = get_source_range_for_char (test.m_parser, &test.m_concats, |
3141 | initial_loc, type, 0, &actual_range); | |
88fa5555 DM |
3142 | ASSERT_STREQ ("range starts after LINE_MAP_MAX_LOCATION_WITH_COLS", err); |
3143 | return; | |
3144 | } | |
3145 | ||
3146 | for (int i = 0; i < 5; i++) | |
3147 | for (int j = 0; j < 2; j++) | |
3148 | ASSERT_CHAR_AT_RANGE (test, initial_loc, type, (i * 2) + j, | |
3149 | i + 1, 10 + j, 10 + j); | |
3150 | ||
bbd6fcf3 DM |
3151 | /* NUL-terminator should use the final closing quote at line 5 column 12. */ |
3152 | ASSERT_CHAR_AT_RANGE (test, initial_loc, type, 10, 5, 12, 12); | |
3153 | ||
3154 | ASSERT_NUM_SUBSTRING_RANGES (test, initial_loc, type, 11); | |
88fa5555 DM |
3155 | } |
3156 | ||
3157 | /* Another test of string literal concatenation, this time combined with | |
3158 | various kinds of escaped characters. */ | |
3159 | ||
3160 | static void | |
3161 | test_lexer_string_locations_concatenation_3 (const line_table_case &case_) | |
3162 | { | |
3163 | /* Digits 0-9, expressing digit 5 in ASCII as hex "\x35" | |
3164 | digit 6 in ASCII as octal "\066", concatenating multiple strings. */ | |
3165 | const char *content | |
3166 | /* .000000000.111111.111.1.2222.222.2.2233.333.3333.34444444444555 | |
3167 | .123456789.012345.678.9.0123.456.7.8901.234.5678.90123456789012. */ | |
3168 | = (" \"01234\" \"\\x35\" \"\\066\" \"789\" /* non-str */\n"); | |
3169 | lexer_test test (case_, content, NULL); | |
3170 | ||
3171 | auto_vec <cpp_string> input_strings; | |
3172 | location_t input_locs[4]; | |
3173 | ||
3174 | /* Verify that we get the expected tokens back. */ | |
3175 | for (int i = 0; i < 4; i++) | |
3176 | { | |
3177 | const cpp_token *tok = test.get_token (); | |
3178 | ASSERT_EQ (tok->type, CPP_STRING); | |
3179 | input_strings.safe_push (tok->val.str); | |
3180 | input_locs[i] = tok->src_loc; | |
3181 | } | |
3182 | ||
3183 | /* Verify that cpp_interpret_string works. */ | |
3184 | cpp_string dst_string; | |
3185 | const enum cpp_ttype type = CPP_STRING; | |
3186 | bool result = cpp_interpret_string (test.m_parser, | |
3187 | input_strings.address (), 4, | |
3188 | &dst_string, type); | |
3189 | ASSERT_TRUE (result); | |
3190 | ASSERT_STREQ ("0123456789", (const char *)dst_string.text); | |
3191 | free (const_cast <unsigned char *> (dst_string.text)); | |
3192 | ||
3193 | /* Simulate c-lex.c's lex_string in order to record concatenation. */ | |
3194 | test.m_concats.record_string_concatenation (4, input_locs); | |
3195 | ||
3196 | location_t initial_loc = input_locs[0]; | |
3197 | ||
3198 | for (int i = 0; i <= 4; i++) | |
3199 | ASSERT_CHAR_AT_RANGE (test, initial_loc, type, i, 1, 10 + i, 10 + i); | |
3200 | ASSERT_CHAR_AT_RANGE (test, initial_loc, type, 5, 1, 19, 22); | |
3201 | ASSERT_CHAR_AT_RANGE (test, initial_loc, type, 6, 1, 27, 30); | |
3202 | for (int i = 7; i <= 9; i++) | |
3203 | ASSERT_CHAR_AT_RANGE (test, initial_loc, type, i, 1, 28 + i, 28 + i); | |
3204 | ||
bbd6fcf3 DM |
3205 | /* NUL-terminator should use the location of the final closing quote. */ |
3206 | ASSERT_CHAR_AT_RANGE (test, initial_loc, type, 10, 1, 38, 38); | |
3207 | ||
3208 | ASSERT_NUM_SUBSTRING_RANGES (test, initial_loc, type, 11); | |
88fa5555 DM |
3209 | } |
3210 | ||
3211 | /* Test of string literal in a macro. */ | |
3212 | ||
3213 | static void | |
3214 | test_lexer_string_locations_macro (const line_table_case &case_) | |
3215 | { | |
3216 | /* Digits 0-9. | |
3217 | .....................0000000001111111111.22222222223. | |
3218 | .....................1234567890123456789.01234567890. */ | |
3219 | const char *content = ("#define MACRO \"0123456789\" /* non-str */\n" | |
3220 | " MACRO"); | |
3221 | lexer_test test (case_, content, NULL); | |
3222 | ||
3223 | /* Verify that we get the expected tokens back. */ | |
3224 | const cpp_token *tok = test.get_token (); | |
3225 | ASSERT_EQ (tok->type, CPP_PADDING); | |
3226 | ||
3227 | tok = test.get_token (); | |
3228 | ASSERT_EQ (tok->type, CPP_STRING); | |
3229 | ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "\"0123456789\""); | |
3230 | ||
3231 | /* Verify ranges of individual characters. We ought to | |
3232 | see columns within the macro definition. */ | |
bbd6fcf3 | 3233 | for (int i = 0; i <= 10; i++) |
88fa5555 DM |
3234 | ASSERT_CHAR_AT_RANGE (test, tok->src_loc, CPP_STRING, |
3235 | i, 1, 20 + i, 20 + i); | |
3236 | ||
bbd6fcf3 | 3237 | ASSERT_NUM_SUBSTRING_RANGES (test, tok->src_loc, CPP_STRING, 11); |
88fa5555 DM |
3238 | |
3239 | tok = test.get_token (); | |
3240 | ASSERT_EQ (tok->type, CPP_PADDING); | |
3241 | } | |
3242 | ||
3243 | /* Test of stringification of a macro argument. */ | |
3244 | ||
3245 | static void | |
3246 | test_lexer_string_locations_stringified_macro_argument | |
3247 | (const line_table_case &case_) | |
3248 | { | |
3249 | /* .....................000000000111111111122222222223. | |
3250 | .....................123456789012345678901234567890. */ | |
3251 | const char *content = ("#define MACRO(X) #X /* non-str */\n" | |
3252 | "MACRO(foo)\n"); | |
3253 | lexer_test test (case_, content, NULL); | |
3254 | ||
3255 | /* Verify that we get the expected token back. */ | |
3256 | const cpp_token *tok = test.get_token (); | |
3257 | ASSERT_EQ (tok->type, CPP_PADDING); | |
3258 | ||
3259 | tok = test.get_token (); | |
3260 | ASSERT_EQ (tok->type, CPP_STRING); | |
3261 | ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "\"foo\""); | |
3262 | ||
3263 | /* We don't support getting the location of a stringified macro | |
3264 | argument. Verify that it fails gracefully. */ | |
3265 | ASSERT_HAS_NO_SUBSTRING_RANGES (test, tok->src_loc, CPP_STRING, | |
3266 | "cpp_interpret_string_1 failed"); | |
3267 | ||
3268 | tok = test.get_token (); | |
3269 | ASSERT_EQ (tok->type, CPP_PADDING); | |
3270 | ||
3271 | tok = test.get_token (); | |
3272 | ASSERT_EQ (tok->type, CPP_PADDING); | |
3273 | } | |
3274 | ||
3275 | /* Ensure that we are fail gracefully if something attempts to pass | |
3276 | in a location that isn't a string literal token. Seen on this code: | |
3277 | ||
3278 | const char a[] = " %d "; | |
3279 | __builtin_printf (a, 0.5); | |
3280 | ^ | |
3281 | ||
3282 | when c-format.c erroneously used the indicated one-character | |
3283 | location as the format string location, leading to a read past the | |
3284 | end of a string buffer in cpp_interpret_string_1. */ | |
3285 | ||
3286 | static void | |
3287 | test_lexer_string_locations_non_string (const line_table_case &case_) | |
3288 | { | |
3289 | /* .....................000000000111111111122222222223. | |
3290 | .....................123456789012345678901234567890. */ | |
3291 | const char *content = (" a\n"); | |
3292 | lexer_test test (case_, content, NULL); | |
3293 | ||
3294 | /* Verify that we get the expected token back. */ | |
3295 | const cpp_token *tok = test.get_token (); | |
3296 | ASSERT_EQ (tok->type, CPP_NAME); | |
3297 | ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "a"); | |
3298 | ||
3299 | /* At this point, libcpp is attempting to interpret the name as a | |
3300 | string literal, despite it not starting with a quote. We don't detect | |
3301 | that, but we should at least fail gracefully. */ | |
3302 | ASSERT_HAS_NO_SUBSTRING_RANGES (test, tok->src_loc, CPP_STRING, | |
3303 | "cpp_interpret_string_1 failed"); | |
3304 | } | |
3305 | ||
3306 | /* Ensure that we can read substring information for a token which | |
3307 | starts in one linemap and ends in another . Adapted from | |
3308 | gcc.dg/cpp/pr69985.c. */ | |
3309 | ||
3310 | static void | |
3311 | test_lexer_string_locations_long_line (const line_table_case &case_) | |
3312 | { | |
3313 | /* .....................000000.000111111111 | |
3314 | .....................123456.789012346789. */ | |
3315 | const char *content = ("/* A very long line, so that we start a new line map. */\n" | |
3316 | " \"0123456789012345678901234567890123456789" | |
3317 | "0123456789012345678901234567890123456789" | |
3318 | "0123456789012345678901234567890123456789" | |
3319 | "0123456789\"\n"); | |
3320 | ||
3321 | lexer_test test (case_, content, NULL); | |
3322 | ||
3323 | /* Verify that we get the expected token back. */ | |
3324 | const cpp_token *tok = test.get_token (); | |
3325 | ASSERT_EQ (tok->type, CPP_STRING); | |
3326 | ||
3327 | if (!should_have_column_data_p (line_table->highest_location)) | |
3328 | return; | |
3329 | ||
3330 | /* Verify ranges of individual characters. */ | |
bbd6fcf3 DM |
3331 | ASSERT_NUM_SUBSTRING_RANGES (test, tok->src_loc, CPP_STRING, 131); |
3332 | for (int i = 0; i < 131; i++) | |
88fa5555 DM |
3333 | ASSERT_CHAR_AT_RANGE (test, tok->src_loc, CPP_STRING, |
3334 | i, 2, 7 + i, 7 + i); | |
3335 | } | |
3336 | ||
b8f56412 DM |
3337 | /* Test of locations within a raw string that doesn't contain a newline. */ |
3338 | ||
3339 | static void | |
3340 | test_lexer_string_locations_raw_string_one_line (const line_table_case &case_) | |
3341 | { | |
3342 | /* .....................00.0000000111111111122. | |
3343 | .....................12.3456789012345678901. */ | |
3344 | const char *content = ("R\"foo(0123456789)foo\"\n"); | |
3345 | lexer_test test (case_, content, NULL); | |
3346 | ||
3347 | /* Verify that we get the expected token back. */ | |
3348 | const cpp_token *tok = test.get_token (); | |
3349 | ASSERT_EQ (tok->type, CPP_STRING); | |
3350 | ||
3351 | /* Verify that cpp_interpret_string works. */ | |
3352 | cpp_string dst_string; | |
3353 | const enum cpp_ttype type = CPP_STRING; | |
3354 | bool result = cpp_interpret_string (test.m_parser, &tok->val.str, 1, | |
3355 | &dst_string, type); | |
3356 | ASSERT_TRUE (result); | |
3357 | ASSERT_STREQ ("0123456789", (const char *)dst_string.text); | |
3358 | free (const_cast <unsigned char *> (dst_string.text)); | |
3359 | ||
3360 | if (!should_have_column_data_p (line_table->highest_location)) | |
3361 | return; | |
3362 | ||
3363 | /* 0-9, plus the nil terminator. */ | |
3364 | ASSERT_NUM_SUBSTRING_RANGES (test, tok->src_loc, CPP_STRING, 11); | |
3365 | for (int i = 0; i < 11; i++) | |
3366 | ASSERT_CHAR_AT_RANGE (test, tok->src_loc, CPP_STRING, | |
3367 | i, 1, 7 + i, 7 + i); | |
3368 | } | |
3369 | ||
3370 | /* Test of locations within a raw string that contains a newline. */ | |
3371 | ||
3372 | static void | |
3373 | test_lexer_string_locations_raw_string_multiline (const line_table_case &case_) | |
3374 | { | |
3375 | /* .....................00.0000. | |
3376 | .....................12.3456. */ | |
3377 | const char *content = ("R\"foo(\n" | |
3378 | /* .....................00000. | |
3379 | .....................12345. */ | |
3380 | "hello\n" | |
3381 | "world\n" | |
3382 | /* .....................00000. | |
3383 | .....................12345. */ | |
3384 | ")foo\"\n"); | |
3385 | lexer_test test (case_, content, NULL); | |
3386 | ||
3387 | /* Verify that we get the expected token back. */ | |
3388 | const cpp_token *tok = test.get_token (); | |
3389 | ASSERT_EQ (tok->type, CPP_STRING); | |
3390 | ||
3391 | /* Verify that cpp_interpret_string works. */ | |
3392 | cpp_string dst_string; | |
3393 | const enum cpp_ttype type = CPP_STRING; | |
3394 | bool result = cpp_interpret_string (test.m_parser, &tok->val.str, 1, | |
3395 | &dst_string, type); | |
3396 | ASSERT_TRUE (result); | |
3397 | ASSERT_STREQ ("\nhello\nworld\n", (const char *)dst_string.text); | |
3398 | free (const_cast <unsigned char *> (dst_string.text)); | |
3399 | ||
3400 | if (!should_have_column_data_p (line_table->highest_location)) | |
3401 | return; | |
3402 | ||
3403 | /* Currently we don't support locations within raw strings that | |
3404 | contain newlines. */ | |
3405 | ASSERT_HAS_NO_SUBSTRING_RANGES (test, tok->src_loc, tok->type, | |
3406 | "range endpoints are on different lines"); | |
3407 | } | |
3408 | ||
a3998c2f DM |
3409 | /* Test of parsing an unterminated raw string. */ |
3410 | ||
3411 | static void | |
3412 | test_lexer_string_locations_raw_string_unterminated (const line_table_case &case_) | |
3413 | { | |
3414 | const char *content = "R\"ouch()ouCh\" /* etc */"; | |
3415 | ||
3416 | lexer_error_sink errors; | |
3417 | lexer_test test (case_, content, &errors); | |
3418 | test.m_implicitly_expect_EOF = false; | |
3419 | ||
3420 | /* Attempt to parse the raw string. */ | |
3421 | const cpp_token *tok = test.get_token (); | |
3422 | ASSERT_EQ (tok->type, CPP_EOF); | |
3423 | ||
3424 | ASSERT_EQ (1, errors.m_errors.length ()); | |
3425 | /* We expect the message "unterminated raw string" | |
3426 | in the "cpplib" translation domain. | |
3427 | It's not clear that dgettext is available on all supported hosts, | |
3428 | so this assertion is commented-out for now. | |
3429 | ASSERT_STREQ (dgettext ("cpplib", "unterminated raw string"), | |
3430 | errors.m_errors[0]); | |
3431 | */ | |
3432 | } | |
3433 | ||
88fa5555 DM |
3434 | /* Test of lexing char constants. */ |
3435 | ||
3436 | static void | |
3437 | test_lexer_char_constants (const line_table_case &case_) | |
3438 | { | |
3439 | /* Various char constants. | |
3440 | .....................0000000001111111111.22222222223. | |
3441 | .....................1234567890123456789.01234567890. */ | |
3442 | const char *content = (" 'a'\n" | |
3443 | " u'a'\n" | |
3444 | " U'a'\n" | |
3445 | " L'a'\n" | |
3446 | " 'abc'\n"); | |
3447 | lexer_test test (case_, content, NULL); | |
3448 | ||
3449 | /* Verify that we get the expected tokens back. */ | |
3450 | /* 'a'. */ | |
3451 | const cpp_token *tok = test.get_token (); | |
3452 | ASSERT_EQ (tok->type, CPP_CHAR); | |
3453 | ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "'a'"); | |
3454 | ||
3455 | unsigned int chars_seen; | |
3456 | int unsignedp; | |
3457 | cppchar_t cc = cpp_interpret_charconst (test.m_parser, tok, | |
3458 | &chars_seen, &unsignedp); | |
3459 | ASSERT_EQ (cc, 'a'); | |
3460 | ASSERT_EQ (chars_seen, 1); | |
3461 | ||
3462 | /* u'a'. */ | |
3463 | tok = test.get_token (); | |
3464 | ASSERT_EQ (tok->type, CPP_CHAR16); | |
3465 | ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "u'a'"); | |
3466 | ||
3467 | /* U'a'. */ | |
3468 | tok = test.get_token (); | |
3469 | ASSERT_EQ (tok->type, CPP_CHAR32); | |
3470 | ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "U'a'"); | |
3471 | ||
3472 | /* L'a'. */ | |
3473 | tok = test.get_token (); | |
3474 | ASSERT_EQ (tok->type, CPP_WCHAR); | |
3475 | ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "L'a'"); | |
3476 | ||
3477 | /* 'abc' (c-char-sequence). */ | |
3478 | tok = test.get_token (); | |
3479 | ASSERT_EQ (tok->type, CPP_CHAR); | |
3480 | ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "'abc'"); | |
3481 | } | |
741d3be5 DM |
3482 | /* A table of interesting location_t values, giving one axis of our test |
3483 | matrix. */ | |
3484 | ||
3485 | static const location_t boundary_locations[] = { | |
3486 | /* Zero means "don't override the default values for a new line_table". */ | |
3487 | 0, | |
3488 | ||
3489 | /* An arbitrary non-zero value that isn't close to one of | |
3490 | the boundary values below. */ | |
3491 | 0x10000, | |
3492 | ||
3493 | /* Values near LINE_MAP_MAX_LOCATION_WITH_PACKED_RANGES. */ | |
3494 | LINE_MAP_MAX_LOCATION_WITH_PACKED_RANGES - 0x100, | |
3495 | LINE_MAP_MAX_LOCATION_WITH_PACKED_RANGES - 1, | |
3496 | LINE_MAP_MAX_LOCATION_WITH_PACKED_RANGES, | |
3497 | LINE_MAP_MAX_LOCATION_WITH_PACKED_RANGES + 1, | |
3498 | LINE_MAP_MAX_LOCATION_WITH_PACKED_RANGES + 0x100, | |
3499 | ||
3500 | /* Values near LINE_MAP_MAX_LOCATION_WITH_COLS. */ | |
3501 | LINE_MAP_MAX_LOCATION_WITH_COLS - 0x100, | |
3502 | LINE_MAP_MAX_LOCATION_WITH_COLS - 1, | |
3503 | LINE_MAP_MAX_LOCATION_WITH_COLS, | |
3504 | LINE_MAP_MAX_LOCATION_WITH_COLS + 1, | |
3505 | LINE_MAP_MAX_LOCATION_WITH_COLS + 0x100, | |
3506 | }; | |
3507 | ||
f87e22c5 | 3508 | /* Run TESTCASE multiple times, once for each case in our test matrix. */ |
d9b950dd DM |
3509 | |
3510 | void | |
f87e22c5 | 3511 | for_each_line_table_case (void (*testcase) (const line_table_case &)) |
d9b950dd | 3512 | { |
741d3be5 DM |
3513 | /* As noted above in the description of struct line_table_case, |
3514 | we want to explore a test matrix of interesting line_table | |
3515 | situations, running various selftests for each case within the | |
3516 | matrix. */ | |
3517 | ||
3518 | /* Run all tests with: | |
3519 | (a) line_table->default_range_bits == 0, and | |
3520 | (b) line_table->default_range_bits == 5. */ | |
3521 | int num_cases_tested = 0; | |
3522 | for (int default_range_bits = 0; default_range_bits <= 5; | |
3523 | default_range_bits += 5) | |
3524 | { | |
3525 | /* ...and use each of the "interesting" location values as | |
3526 | the starting location within line_table. */ | |
3527 | const int num_boundary_locations | |
3528 | = sizeof (boundary_locations) / sizeof (boundary_locations[0]); | |
3529 | for (int loc_idx = 0; loc_idx < num_boundary_locations; loc_idx++) | |
3530 | { | |
3531 | line_table_case c (default_range_bits, boundary_locations[loc_idx]); | |
3532 | ||
f87e22c5 | 3533 | testcase (c); |
741d3be5 DM |
3534 | |
3535 | num_cases_tested++; | |
3536 | } | |
3537 | } | |
3538 | ||
3539 | /* Verify that we fully covered the test matrix. */ | |
3540 | ASSERT_EQ (num_cases_tested, 2 * 12); | |
f87e22c5 DM |
3541 | } |
3542 | ||
3543 | /* Run all of the selftests within this file. */ | |
3544 | ||
3545 | void | |
3546 | input_c_tests () | |
3547 | { | |
082284da | 3548 | test_linenum_comparisons (); |
f87e22c5 DM |
3549 | test_should_have_column_data_p (); |
3550 | test_unknown_location (); | |
3551 | test_builtins (); | |
9144eabb | 3552 | for_each_line_table_case (test_make_location_nonpure_range_endpoints); |
f87e22c5 DM |
3553 | |
3554 | for_each_line_table_case (test_accessing_ordinary_linemaps); | |
3555 | for_each_line_table_case (test_lexer); | |
3556 | for_each_line_table_case (test_lexer_string_locations_simple); | |
3557 | for_each_line_table_case (test_lexer_string_locations_ebcdic); | |
3558 | for_each_line_table_case (test_lexer_string_locations_hex); | |
3559 | for_each_line_table_case (test_lexer_string_locations_oct); | |
3560 | for_each_line_table_case (test_lexer_string_locations_letter_escape_1); | |
3561 | for_each_line_table_case (test_lexer_string_locations_letter_escape_2); | |
3562 | for_each_line_table_case (test_lexer_string_locations_ucn4); | |
3563 | for_each_line_table_case (test_lexer_string_locations_ucn8); | |
3564 | for_each_line_table_case (test_lexer_string_locations_wide_string); | |
3565 | for_each_line_table_case (test_lexer_string_locations_string16); | |
3566 | for_each_line_table_case (test_lexer_string_locations_string32); | |
3567 | for_each_line_table_case (test_lexer_string_locations_u8); | |
3568 | for_each_line_table_case (test_lexer_string_locations_utf8_source); | |
3569 | for_each_line_table_case (test_lexer_string_locations_concatenation_1); | |
3570 | for_each_line_table_case (test_lexer_string_locations_concatenation_2); | |
3571 | for_each_line_table_case (test_lexer_string_locations_concatenation_3); | |
3572 | for_each_line_table_case (test_lexer_string_locations_macro); | |
3573 | for_each_line_table_case (test_lexer_string_locations_stringified_macro_argument); | |
3574 | for_each_line_table_case (test_lexer_string_locations_non_string); | |
3575 | for_each_line_table_case (test_lexer_string_locations_long_line); | |
b8f56412 DM |
3576 | for_each_line_table_case (test_lexer_string_locations_raw_string_one_line); |
3577 | for_each_line_table_case (test_lexer_string_locations_raw_string_multiline); | |
a3998c2f | 3578 | for_each_line_table_case (test_lexer_string_locations_raw_string_unterminated); |
f87e22c5 | 3579 | for_each_line_table_case (test_lexer_char_constants); |
741d3be5 | 3580 | |
d9b950dd DM |
3581 | test_reading_source_line (); |
3582 | } | |
3583 | ||
3584 | } // namespace selftest | |
3585 | ||
3586 | #endif /* CHECKING_P */ |