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14c7833c | 1 | /* Command line option handling. |
5d4b393f | 2 | Copyright (C) 2006, 2007, 2008, 2010 Free Software Foundation, Inc. |
14c7833c L |
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 | |
9dcd6f09 | 8 | Software Foundation; either version 3, or (at your option) any later |
14c7833c L |
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 | |
9dcd6f09 NC |
17 | along with GCC; see the file COPYING3. If not see |
18 | <http://www.gnu.org/licenses/>. */ | |
14c7833c L |
19 | |
20 | #include "config.h" | |
21 | #include "system.h" | |
22 | #include "intl.h" | |
23 | #include "coretypes.h" | |
24 | #include "opts.h" | |
5d4b393f | 25 | #include "options.h" |
5f20c657 | 26 | #include "diagnostic.h" |
eea13ead | 27 | #include "tm.h" /* For SWITCH_TAKES_ARG and WORD_SWITCH_TAKES_ARG. */ |
14c7833c L |
28 | |
29 | /* Perform a binary search to find which option the command-line INPUT | |
6e2f1956 JM |
30 | matches. Returns its index in the option array, and |
31 | OPT_SPECIAL_unknown on failure. | |
14c7833c L |
32 | |
33 | This routine is quite subtle. A normal binary search is not good | |
34 | enough because some options can be suffixed with an argument, and | |
35 | multiple sub-matches can occur, e.g. input of "-pedantic" matching | |
36 | the initial substring of "-pedantic-errors". | |
37 | ||
38 | A more complicated example is -gstabs. It should match "-g" with | |
39 | an argument of "stabs". Suppose, however, that the number and list | |
40 | of switches are such that the binary search tests "-gen-decls" | |
41 | before having tested "-g". This doesn't match, and as "-gen-decls" | |
42 | is less than "-gstabs", it will become the lower bound of the | |
43 | binary search range, and "-g" will never be seen. To resolve this | |
af47e6ac | 44 | issue, 'optc-gen.awk' makes "-gen-decls" point, via the back_chain member, |
14c7833c L |
45 | to "-g" so that failed searches that end between "-gen-decls" and |
46 | the lexicographically subsequent switch know to go back and see if | |
47 | "-g" causes a match (which it does in this example). | |
48 | ||
49 | This search is done in such a way that the longest match for the | |
50 | front end in question wins. If there is no match for the current | |
51 | front end, the longest match for a different front end is returned | |
52 | (or N_OPTS if none) and the caller emits an error message. */ | |
53 | size_t | |
54 | find_opt (const char *input, int lang_mask) | |
55 | { | |
56 | size_t mn, mx, md, opt_len; | |
57 | size_t match_wrong_lang; | |
58 | int comp; | |
59 | ||
60 | mn = 0; | |
61 | mx = cl_options_count; | |
62 | ||
63 | /* Find mn such this lexicographical inequality holds: | |
64 | cl_options[mn] <= input < cl_options[mn + 1]. */ | |
65 | while (mx - mn > 1) | |
66 | { | |
67 | md = (mn + mx) / 2; | |
68 | opt_len = cl_options[md].opt_len; | |
69 | comp = strncmp (input, cl_options[md].opt_text + 1, opt_len); | |
70 | ||
71 | if (comp < 0) | |
72 | mx = md; | |
73 | else | |
74 | mn = md; | |
75 | } | |
76 | ||
77 | /* This is the switch that is the best match but for a different | |
6e2f1956 JM |
78 | front end, or OPT_SPECIAL_unknown if there is no match at all. */ |
79 | match_wrong_lang = OPT_SPECIAL_unknown; | |
14c7833c L |
80 | |
81 | /* Backtrace the chain of possible matches, returning the longest | |
82 | one, if any, that fits best. With current GCC switches, this | |
83 | loop executes at most twice. */ | |
84 | do | |
85 | { | |
86 | const struct cl_option *opt = &cl_options[mn]; | |
87 | ||
88 | /* Is the input either an exact match or a prefix that takes a | |
89 | joined argument? */ | |
90 | if (!strncmp (input, opt->opt_text + 1, opt->opt_len) | |
91 | && (input[opt->opt_len] == '\0' || (opt->flags & CL_JOINED))) | |
92 | { | |
93 | /* If language is OK, return it. */ | |
94 | if (opt->flags & lang_mask) | |
95 | return mn; | |
96 | ||
97 | /* If we haven't remembered a prior match, remember this | |
98 | one. Any prior match is necessarily better. */ | |
6e2f1956 | 99 | if (match_wrong_lang == OPT_SPECIAL_unknown) |
14c7833c L |
100 | match_wrong_lang = mn; |
101 | } | |
102 | ||
103 | /* Try the next possibility. This is cl_options_count if there | |
104 | are no more. */ | |
105 | mn = opt->back_chain; | |
106 | } | |
107 | while (mn != cl_options_count); | |
108 | ||
6e2f1956 | 109 | /* Return the best wrong match, or OPT_SPECIAL_unknown if none. */ |
14c7833c L |
110 | return match_wrong_lang; |
111 | } | |
112 | ||
5d4b393f JM |
113 | /* If ARG is a non-negative integer made up solely of digits, return its |
114 | value, otherwise return -1. */ | |
115 | ||
116 | int | |
117 | integral_argument (const char *arg) | |
118 | { | |
119 | const char *p = arg; | |
120 | ||
121 | while (*p && ISDIGIT (*p)) | |
122 | p++; | |
123 | ||
124 | if (*p == '\0') | |
125 | return atoi (arg); | |
126 | ||
127 | return -1; | |
128 | } | |
129 | ||
130 | /* Decode the switch beginning at ARGV for the language indicated by | |
131 | LANG_MASK, into the structure *DECODED. Returns the number of | |
132 | switches consumed. */ | |
133 | ||
6e2f1956 | 134 | static unsigned int |
5d4b393f JM |
135 | decode_cmdline_option (const char **argv, unsigned int lang_mask, |
136 | struct cl_decoded_option *decoded) | |
137 | { | |
138 | size_t opt_index; | |
139 | const char *opt, *arg = 0; | |
140 | char *dup = 0; | |
141 | int value = 1; | |
eea13ead JM |
142 | unsigned int result = 1, i; |
143 | size_t total_len; | |
144 | char *p; | |
5d4b393f JM |
145 | const struct cl_option *option; |
146 | int errors = 0; | |
147 | ||
148 | opt = argv[0]; | |
149 | ||
150 | opt_index = find_opt (opt + 1, lang_mask | CL_COMMON | CL_TARGET); | |
6e2f1956 | 151 | if (opt_index == OPT_SPECIAL_unknown |
5d4b393f JM |
152 | && (opt[1] == 'W' || opt[1] == 'f' || opt[1] == 'm') |
153 | && opt[2] == 'n' && opt[3] == 'o' && opt[4] == '-') | |
154 | { | |
155 | /* Drop the "no-" from negative switches. */ | |
156 | size_t len = strlen (opt) - 3; | |
157 | ||
158 | dup = XNEWVEC (char, len + 1); | |
159 | dup[0] = '-'; | |
160 | dup[1] = opt[1]; | |
161 | memcpy (dup + 2, opt + 5, len - 2 + 1); | |
162 | opt = dup; | |
163 | value = 0; | |
164 | opt_index = find_opt (opt + 1, lang_mask | CL_COMMON | CL_TARGET); | |
165 | } | |
166 | ||
6e2f1956 JM |
167 | if (opt_index == OPT_SPECIAL_unknown) |
168 | { | |
169 | arg = argv[0]; | |
170 | goto done; | |
171 | } | |
5d4b393f JM |
172 | |
173 | option = &cl_options[opt_index]; | |
174 | ||
175 | /* Reject negative form of switches that don't take negatives as | |
176 | unrecognized. */ | |
177 | if (!value && (option->flags & CL_REJECT_NEGATIVE)) | |
178 | { | |
6e2f1956 JM |
179 | opt_index = OPT_SPECIAL_unknown; |
180 | arg = argv[0]; | |
5d4b393f JM |
181 | goto done; |
182 | } | |
183 | ||
184 | /* Check to see if the option is disabled for this configuration. */ | |
185 | if (option->flags & CL_DISABLED) | |
186 | errors |= CL_ERR_DISABLED; | |
187 | ||
188 | /* Sort out any argument the switch takes. */ | |
189 | if (option->flags & CL_JOINED) | |
190 | { | |
191 | /* Have arg point to the original switch. This is because | |
192 | some code, such as disable_builtin_function, expects its | |
193 | argument to be persistent until the program exits. */ | |
194 | arg = argv[0] + cl_options[opt_index].opt_len + 1; | |
195 | if (!value) | |
196 | arg += strlen ("no-"); | |
197 | ||
198 | if (*arg == '\0' && !(option->flags & CL_MISSING_OK)) | |
199 | { | |
200 | if (option->flags & CL_SEPARATE) | |
201 | { | |
202 | arg = argv[1]; | |
203 | result = 2; | |
204 | if (arg == NULL) | |
205 | result = 1; | |
206 | } | |
207 | else | |
208 | /* Missing argument. */ | |
209 | arg = NULL; | |
210 | } | |
211 | } | |
212 | else if (option->flags & CL_SEPARATE) | |
213 | { | |
214 | arg = argv[1]; | |
215 | result = 2; | |
216 | if (arg == NULL) | |
217 | result = 1; | |
218 | } | |
219 | ||
220 | /* Check if this is a switch for a different front end. */ | |
221 | if (!(option->flags & (lang_mask | CL_COMMON | CL_TARGET))) | |
222 | errors |= CL_ERR_WRONG_LANG; | |
223 | else if ((option->flags & CL_TARGET) | |
224 | && (option->flags & CL_LANG_ALL) | |
225 | && !(option->flags & lang_mask)) | |
226 | /* Complain for target flag language mismatches if any languages | |
227 | are specified. */ | |
228 | errors |= CL_ERR_WRONG_LANG; | |
229 | ||
230 | if (arg == NULL && (option->flags & (CL_JOINED | CL_SEPARATE))) | |
231 | errors |= CL_ERR_MISSING_ARG; | |
232 | ||
233 | /* If the switch takes an integer, convert it. */ | |
234 | if (arg && (option->flags & CL_UINTEGER)) | |
235 | { | |
236 | value = integral_argument (arg); | |
237 | if (value == -1) | |
238 | errors |= CL_ERR_UINT_ARG; | |
239 | } | |
240 | ||
241 | done: | |
242 | if (dup) | |
243 | free (dup); | |
244 | decoded->opt_index = opt_index; | |
245 | decoded->arg = arg; | |
246 | decoded->value = value; | |
247 | decoded->errors = errors; | |
eea13ead JM |
248 | |
249 | if (opt_index == OPT_SPECIAL_unknown) | |
6e2f1956 | 250 | { |
eea13ead JM |
251 | /* Skip the correct number of arguments for options handled |
252 | through specs. */ | |
253 | const char *popt = argv[0] + 1; | |
254 | int c = *popt; | |
255 | ||
256 | gcc_assert (result == 1); | |
257 | if (SWITCH_TAKES_ARG (c) > (popt[1] != 0)) | |
258 | result += SWITCH_TAKES_ARG (c) - (popt[1] != 0); | |
259 | else if (WORD_SWITCH_TAKES_ARG (popt)) | |
260 | result += WORD_SWITCH_TAKES_ARG (popt); | |
261 | if (result > 1) | |
262 | for (i = 1; i < result; i++) | |
263 | if (argv[i] == NULL) | |
264 | { | |
265 | result = i; | |
266 | break; | |
267 | } | |
6e2f1956 | 268 | } |
eea13ead JM |
269 | |
270 | gcc_assert (result >= 1 && result <= ARRAY_SIZE (decoded->canonical_option)); | |
271 | decoded->canonical_option_num_elements = result; | |
272 | total_len = 0; | |
273 | for (i = 0; i < ARRAY_SIZE (decoded->canonical_option); i++) | |
274 | { | |
275 | if (i < result) | |
276 | { | |
277 | decoded->canonical_option[i] = argv[i]; | |
278 | total_len += strlen (argv[i]) + 1; | |
279 | } | |
280 | else | |
281 | decoded->canonical_option[i] = NULL; | |
282 | } | |
283 | decoded->orig_option_with_args_text = p = XNEWVEC (char, total_len); | |
284 | for (i = 0; i < result; i++) | |
285 | { | |
286 | size_t len = strlen (argv[i]); | |
287 | ||
288 | memcpy (p, argv[i], len); | |
289 | p += len; | |
290 | if (i == result - 1) | |
291 | *p++ = 0; | |
292 | else | |
293 | *p++ = ' '; | |
294 | } | |
295 | ||
5d4b393f JM |
296 | return result; |
297 | } | |
298 | ||
6e2f1956 JM |
299 | /* Decode command-line options (ARGC and ARGV being the arguments of |
300 | main) into an array, setting *DECODED_OPTIONS to a pointer to that | |
301 | array and *DECODED_OPTIONS_COUNT to the number of entries in the | |
302 | array. The first entry in the array is always one for the program | |
303 | name (OPT_SPECIAL_program_name). LANG_MASK indicates the language | |
304 | applicable for decoding. Do not produce any diagnostics or set | |
305 | state outside of these variables. */ | |
306 | ||
307 | void | |
308 | decode_cmdline_options_to_array (unsigned int argc, const char **argv, | |
309 | unsigned int lang_mask, | |
310 | struct cl_decoded_option **decoded_options, | |
311 | unsigned int *decoded_options_count) | |
312 | { | |
313 | unsigned int n, i; | |
314 | struct cl_decoded_option *opt_array; | |
315 | unsigned int num_decoded_options; | |
316 | ||
317 | opt_array = XNEWVEC (struct cl_decoded_option, argc); | |
318 | ||
319 | opt_array[0].opt_index = OPT_SPECIAL_program_name; | |
320 | opt_array[0].arg = argv[0]; | |
321 | opt_array[0].orig_option_with_args_text = argv[0]; | |
eea13ead | 322 | opt_array[0].canonical_option_num_elements = 1; |
7a9bf9a4 JM |
323 | opt_array[0].canonical_option[0] = argv[0]; |
324 | opt_array[0].canonical_option[1] = NULL; | |
eea13ead JM |
325 | opt_array[0].canonical_option[2] = NULL; |
326 | opt_array[0].canonical_option[3] = NULL; | |
6e2f1956 JM |
327 | opt_array[0].value = 1; |
328 | opt_array[0].errors = 0; | |
329 | num_decoded_options = 1; | |
330 | ||
331 | for (i = 1; i < argc; i += n) | |
332 | { | |
333 | const char *opt = argv[i]; | |
334 | ||
335 | /* Interpret "-" or a non-switch as a file name. */ | |
336 | if (opt[0] != '-' || opt[1] == '\0') | |
337 | { | |
338 | opt_array[num_decoded_options].opt_index = OPT_SPECIAL_input_file; | |
339 | opt_array[num_decoded_options].arg = opt; | |
340 | opt_array[num_decoded_options].orig_option_with_args_text = opt; | |
eea13ead | 341 | opt_array[num_decoded_options].canonical_option_num_elements = 1; |
7a9bf9a4 JM |
342 | opt_array[num_decoded_options].canonical_option[0] = opt; |
343 | opt_array[num_decoded_options].canonical_option[1] = NULL; | |
eea13ead JM |
344 | opt_array[num_decoded_options].canonical_option[2] = NULL; |
345 | opt_array[num_decoded_options].canonical_option[3] = NULL; | |
6e2f1956 JM |
346 | opt_array[num_decoded_options].value = 1; |
347 | opt_array[num_decoded_options].errors = 0; | |
348 | num_decoded_options++; | |
349 | n = 1; | |
350 | continue; | |
351 | } | |
352 | ||
353 | n = decode_cmdline_option (argv + i, lang_mask, | |
354 | &opt_array[num_decoded_options]); | |
355 | num_decoded_options++; | |
356 | } | |
357 | ||
358 | opt_array = XRESIZEVEC (struct cl_decoded_option, opt_array, | |
359 | num_decoded_options); | |
360 | *decoded_options = opt_array; | |
361 | *decoded_options_count = num_decoded_options; | |
362 | } | |
363 | ||
14c7833c L |
364 | /* Return true if NEXT_OPT_IDX cancels OPT_IDX. Return false if the |
365 | next one is the same as ORIG_NEXT_OPT_IDX. */ | |
366 | ||
367 | static bool | |
368 | cancel_option (int opt_idx, int next_opt_idx, int orig_next_opt_idx) | |
369 | { | |
370 | /* An option can be canceled by the same option or an option with | |
371 | Negative. */ | |
372 | if (cl_options [next_opt_idx].neg_index == opt_idx) | |
373 | return true; | |
374 | ||
375 | if (cl_options [next_opt_idx].neg_index != orig_next_opt_idx) | |
376 | return cancel_option (opt_idx, cl_options [next_opt_idx].neg_index, | |
377 | orig_next_opt_idx); | |
b8698a0f | 378 | |
14c7833c L |
379 | return false; |
380 | } | |
381 | ||
382 | /* Filter out options canceled by the ones after them. */ | |
383 | ||
384 | void | |
385 | prune_options (int *argcp, char ***argvp) | |
386 | { | |
387 | int argc = *argcp; | |
d3bfe4de | 388 | int *options = XNEWVEC (int, argc); |
807303cf DK |
389 | /* We will only return this replacement argv if we remove at least |
390 | one argument, so it does not need to be size (argc + 1) to | |
391 | make room for the terminating NULL because we will always have | |
392 | freed up at least one slot when we end up using it at all. */ | |
d3bfe4de | 393 | char **argv = XNEWVEC (char *, argc); |
14c7833c L |
394 | int i, arg_count, need_prune = 0; |
395 | const struct cl_option *option; | |
396 | size_t opt_index; | |
397 | ||
398 | /* Scan all arguments. */ | |
399 | for (i = 1; i < argc; i++) | |
400 | { | |
401 | int value = 1; | |
402 | const char *opt = (*argvp) [i]; | |
403 | ||
404 | opt_index = find_opt (opt + 1, -1); | |
6e2f1956 | 405 | if (opt_index == OPT_SPECIAL_unknown |
14c7833c L |
406 | && (opt[1] == 'W' || opt[1] == 'f' || opt[1] == 'm') |
407 | && opt[2] == 'n' && opt[3] == 'o' && opt[4] == '-') | |
408 | { | |
409 | char *dup; | |
410 | ||
411 | /* Drop the "no-" from negative switches. */ | |
412 | size_t len = strlen (opt) - 3; | |
413 | ||
414 | dup = XNEWVEC (char, len + 1); | |
415 | dup[0] = '-'; | |
416 | dup[1] = opt[1]; | |
417 | memcpy (dup + 2, opt + 5, len - 2 + 1); | |
418 | opt = dup; | |
419 | value = 0; | |
420 | opt_index = find_opt (opt + 1, -1); | |
421 | free (dup); | |
422 | } | |
423 | ||
6e2f1956 | 424 | if (opt_index == OPT_SPECIAL_unknown) |
14c7833c L |
425 | { |
426 | cont: | |
427 | options [i] = 0; | |
428 | continue; | |
429 | } | |
430 | ||
431 | option = &cl_options[opt_index]; | |
432 | if (option->neg_index < 0) | |
433 | goto cont; | |
434 | ||
faa88843 L |
435 | /* Skip joined switches. */ |
436 | if ((option->flags & CL_JOINED)) | |
437 | goto cont; | |
438 | ||
14c7833c L |
439 | /* Reject negative form of switches that don't take negatives as |
440 | unrecognized. */ | |
441 | if (!value && (option->flags & CL_REJECT_NEGATIVE)) | |
442 | goto cont; | |
443 | ||
444 | options [i] = (int) opt_index; | |
445 | need_prune |= options [i]; | |
446 | } | |
447 | ||
448 | if (!need_prune) | |
449 | goto done; | |
450 | ||
451 | /* Remove arguments which are negated by others after them. */ | |
452 | argv [0] = (*argvp) [0]; | |
453 | arg_count = 1; | |
454 | for (i = 1; i < argc; i++) | |
455 | { | |
456 | int j, opt_idx; | |
457 | ||
458 | opt_idx = options [i]; | |
459 | if (opt_idx) | |
460 | { | |
461 | int next_opt_idx; | |
462 | for (j = i + 1; j < argc; j++) | |
463 | { | |
464 | next_opt_idx = options [j]; | |
465 | if (next_opt_idx | |
466 | && cancel_option (opt_idx, next_opt_idx, | |
467 | next_opt_idx)) | |
468 | break; | |
469 | } | |
470 | } | |
471 | else | |
472 | goto keep; | |
473 | ||
474 | if (j == argc) | |
475 | { | |
476 | keep: | |
477 | argv [arg_count] = (*argvp) [i]; | |
478 | arg_count++; | |
479 | } | |
480 | } | |
481 | ||
482 | if (arg_count != argc) | |
483 | { | |
484 | *argcp = arg_count; | |
485 | *argvp = argv; | |
807303cf DK |
486 | /* Add NULL-termination. Guaranteed not to overflow because |
487 | arg_count here can only be less than argc. */ | |
488 | argv[arg_count] = 0; | |
14c7833c L |
489 | } |
490 | else | |
491 | { | |
492 | done: | |
493 | free (argv); | |
494 | } | |
495 | ||
496 | free (options); | |
497 | } | |
5f20c657 | 498 | |
481e1176 JM |
499 | /* Handle option DECODED for the language indicated by LANG_MASK, |
500 | using the handlers in HANDLERS. KIND is the diagnostic_t if this | |
501 | is a diagnostics option, DK_UNSPECIFIED otherwise. Returns false | |
502 | if the switch was invalid. */ | |
5f20c657 JM |
503 | |
504 | bool | |
481e1176 | 505 | handle_option (const struct cl_decoded_option *decoded, |
5f20c657 JM |
506 | unsigned int lang_mask, int kind, |
507 | const struct cl_option_handlers *handlers) | |
508 | { | |
481e1176 JM |
509 | size_t opt_index = decoded->opt_index; |
510 | const char *arg = decoded->arg; | |
511 | int value = decoded->value; | |
5f20c657 JM |
512 | const struct cl_option *option = &cl_options[opt_index]; |
513 | size_t i; | |
514 | ||
515 | if (option->flag_var) | |
516 | set_option (opt_index, value, arg, kind); | |
517 | ||
518 | for (i = 0; i < handlers->num_handlers; i++) | |
519 | if (option->flags & handlers->handlers[i].mask) | |
520 | { | |
481e1176 | 521 | if (!handlers->handlers[i].handler (decoded, |
5f20c657 JM |
522 | lang_mask, kind, handlers)) |
523 | return false; | |
524 | else | |
481e1176 | 525 | handlers->post_handling_callback (decoded, |
5f20c657 JM |
526 | handlers->handlers[i].mask); |
527 | } | |
528 | ||
529 | return true; | |
530 | } | |
531 | ||
481e1176 JM |
532 | /* Like handle_option, but OPT_INDEX, ARG and VALUE describe the |
533 | option instead of DECODED. This is used for callbacks when one | |
534 | option implies another instead of an option being decoded from the | |
535 | command line. */ | |
536 | ||
537 | bool | |
538 | handle_generated_option (size_t opt_index, const char *arg, int value, | |
539 | unsigned int lang_mask, int kind, | |
540 | const struct cl_option_handlers *handlers) | |
541 | { | |
542 | const struct cl_option *option = &cl_options[opt_index]; | |
543 | struct cl_decoded_option decoded; | |
544 | ||
545 | decoded.opt_index = opt_index; | |
546 | decoded.arg = arg; | |
547 | decoded.canonical_option[2] = NULL; | |
548 | decoded.canonical_option[3] = NULL; | |
549 | decoded.value = value; | |
550 | decoded.errors = 0; | |
551 | ||
552 | if (arg) | |
553 | { | |
554 | if (option->flags & CL_SEPARATE) | |
555 | { | |
556 | decoded.orig_option_with_args_text = concat (option->opt_text, " ", | |
557 | arg, NULL); | |
558 | decoded.canonical_option[0] = option->opt_text; | |
559 | decoded.canonical_option[1] = arg; | |
560 | decoded.canonical_option_num_elements = 2; | |
561 | } | |
562 | else | |
563 | { | |
564 | gcc_assert (option->flags & CL_JOINED); | |
565 | decoded.orig_option_with_args_text = concat (option->opt_text, arg, | |
566 | NULL); | |
567 | decoded.canonical_option[0] = decoded.orig_option_with_args_text; | |
568 | decoded.canonical_option[1] = NULL; | |
569 | decoded.canonical_option_num_elements = 1; | |
570 | } | |
571 | } | |
572 | else | |
573 | { | |
574 | decoded.orig_option_with_args_text = option->opt_text; | |
575 | decoded.canonical_option[0] = option->opt_text; | |
576 | decoded.canonical_option[1] = NULL; | |
577 | decoded.canonical_option_num_elements = 1; | |
578 | } | |
579 | ||
580 | return handle_option (&decoded, lang_mask, kind, handlers); | |
581 | } | |
582 | ||
5f20c657 JM |
583 | /* Handle the switch DECODED for the language indicated by LANG_MASK, |
584 | using the handlers in *HANDLERS. */ | |
585 | ||
586 | void | |
587 | read_cmdline_option (struct cl_decoded_option *decoded, | |
588 | unsigned int lang_mask, | |
589 | const struct cl_option_handlers *handlers) | |
590 | { | |
591 | const struct cl_option *option; | |
592 | const char *opt; | |
593 | ||
594 | if (decoded->opt_index == OPT_SPECIAL_unknown) | |
595 | { | |
481e1176 JM |
596 | if (handlers->unknown_option_callback (decoded)) |
597 | error ("unrecognized command line option %qs", decoded->arg); | |
5f20c657 JM |
598 | return; |
599 | } | |
600 | ||
601 | option = &cl_options[decoded->opt_index]; | |
602 | opt = decoded->orig_option_with_args_text; | |
603 | ||
604 | if (decoded->errors & CL_ERR_DISABLED) | |
605 | { | |
606 | error ("command line option %qs" | |
607 | " is not supported by this configuration", opt); | |
608 | return; | |
609 | } | |
610 | ||
611 | if (decoded->errors & CL_ERR_WRONG_LANG) | |
612 | { | |
481e1176 | 613 | handlers->wrong_lang_callback (decoded, lang_mask); |
5f20c657 JM |
614 | return; |
615 | } | |
616 | ||
617 | if (decoded->errors & CL_ERR_MISSING_ARG) | |
618 | { | |
619 | if (option->missing_argument_error) | |
620 | error (option->missing_argument_error, opt); | |
621 | else | |
622 | error ("missing argument to %qs", opt); | |
623 | return; | |
624 | } | |
625 | ||
626 | if (decoded->errors & CL_ERR_UINT_ARG) | |
627 | { | |
628 | error ("argument to %qs should be a non-negative integer", | |
629 | option->opt_text); | |
630 | return; | |
631 | } | |
632 | ||
633 | gcc_assert (!decoded->errors); | |
634 | ||
481e1176 | 635 | if (!handle_option (decoded, lang_mask, DK_UNSPECIFIED, handlers)) |
5f20c657 JM |
636 | error ("unrecognized command line option %qs", opt); |
637 | } | |
638 | ||
639 | /* Set any variable for option OPT_INDEX according to VALUE and ARG, | |
640 | diagnostic kind KIND. */ | |
641 | ||
642 | void | |
643 | set_option (int opt_index, int value, const char *arg, int kind) | |
644 | { | |
645 | const struct cl_option *option = &cl_options[opt_index]; | |
646 | ||
647 | if (!option->flag_var) | |
648 | return; | |
649 | ||
650 | switch (option->var_type) | |
651 | { | |
652 | case CLVC_BOOLEAN: | |
653 | *(int *) option->flag_var = value; | |
654 | break; | |
655 | ||
656 | case CLVC_EQUAL: | |
657 | *(int *) option->flag_var = (value | |
658 | ? option->var_value | |
659 | : !option->var_value); | |
660 | break; | |
661 | ||
662 | case CLVC_BIT_CLEAR: | |
663 | case CLVC_BIT_SET: | |
664 | if ((value != 0) == (option->var_type == CLVC_BIT_SET)) | |
665 | *(int *) option->flag_var |= option->var_value; | |
666 | else | |
667 | *(int *) option->flag_var &= ~option->var_value; | |
668 | if (option->flag_var == &target_flags) | |
669 | target_flags_explicit |= option->var_value; | |
670 | break; | |
671 | ||
672 | case CLVC_STRING: | |
673 | *(const char **) option->flag_var = arg; | |
674 | break; | |
675 | } | |
676 | ||
677 | if ((diagnostic_t) kind != DK_UNSPECIFIED) | |
678 | diagnostic_classify_diagnostic (global_dc, opt_index, (diagnostic_t) kind, | |
679 | UNKNOWN_LOCATION); | |
680 | } |