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Commit | Line | Data |
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6de9cd9a | 1 | /* Declaration statement matcher |
636dff67 SK |
2 | Copyright (C) 2002, 2004, 2005, 2006, 2007 |
3 | Free Software Foundation, Inc. | |
6de9cd9a DN |
4 | Contributed by Andy Vaught |
5 | ||
9fc4d79b | 6 | This file is part of GCC. |
6de9cd9a | 7 | |
9fc4d79b TS |
8 | GCC is free software; you can redistribute it and/or modify it under |
9 | the terms of the GNU General Public License as published by the Free | |
10 | Software Foundation; either version 2, or (at your option) any later | |
11 | version. | |
6de9cd9a | 12 | |
9fc4d79b TS |
13 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | for more details. | |
6de9cd9a DN |
17 | |
18 | You should have received a copy of the GNU General Public License | |
9fc4d79b | 19 | along with GCC; see the file COPYING. If not, write to the Free |
ab57747b KC |
20 | Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA |
21 | 02110-1301, USA. */ | |
6de9cd9a | 22 | |
6de9cd9a | 23 | #include "config.h" |
d22e4895 | 24 | #include "system.h" |
6de9cd9a DN |
25 | #include "gfortran.h" |
26 | #include "match.h" | |
27 | #include "parse.h" | |
6de9cd9a | 28 | |
2054fc29 | 29 | /* This flag is set if an old-style length selector is matched |
6de9cd9a DN |
30 | during a type-declaration statement. */ |
31 | ||
32 | static int old_char_selector; | |
33 | ||
46fa431d | 34 | /* When variables acquire types and attributes from a declaration |
6de9cd9a DN |
35 | statement, they get them from the following static variables. The |
36 | first part of a declaration sets these variables and the second | |
37 | part copies these into symbol structures. */ | |
38 | ||
39 | static gfc_typespec current_ts; | |
40 | ||
41 | static symbol_attribute current_attr; | |
42 | static gfc_array_spec *current_as; | |
43 | static int colon_seen; | |
44 | ||
a8b3b0b6 CR |
45 | /* The current binding label (if any). */ |
46 | static char curr_binding_label[GFC_MAX_BINDING_LABEL_LEN + 1]; | |
47 | /* Need to know how many identifiers are on the current data declaration | |
48 | line in case we're given the BIND(C) attribute with a NAME= specifier. */ | |
49 | static int num_idents_on_line; | |
50 | /* Need to know if a NAME= specifier was found during gfc_match_bind_c so we | |
51 | can supply a name if the curr_binding_label is nil and NAME= was not. */ | |
52 | static int has_name_equals = 0; | |
53 | ||
25d8f0a2 TS |
54 | /* Initializer of the previous enumerator. */ |
55 | ||
56 | static gfc_expr *last_initializer; | |
57 | ||
58 | /* History of all the enumerators is maintained, so that | |
59 | kind values of all the enumerators could be updated depending | |
60 | upon the maximum initialized value. */ | |
61 | ||
62 | typedef struct enumerator_history | |
63 | { | |
64 | gfc_symbol *sym; | |
65 | gfc_expr *initializer; | |
66 | struct enumerator_history *next; | |
67 | } | |
68 | enumerator_history; | |
69 | ||
70 | /* Header of enum history chain. */ | |
71 | ||
72 | static enumerator_history *enum_history = NULL; | |
73 | ||
74 | /* Pointer of enum history node containing largest initializer. */ | |
75 | ||
76 | static enumerator_history *max_enum = NULL; | |
77 | ||
6de9cd9a DN |
78 | /* gfc_new_block points to the symbol of a newly matched block. */ |
79 | ||
80 | gfc_symbol *gfc_new_block; | |
81 | ||
82 | ||
294fbfc8 TS |
83 | /********************* DATA statement subroutines *********************/ |
84 | ||
2220652d PT |
85 | static bool in_match_data = false; |
86 | ||
87 | bool | |
88 | gfc_in_match_data (void) | |
89 | { | |
90 | return in_match_data; | |
91 | } | |
92 | ||
93 | void | |
94 | gfc_set_in_match_data (bool set_value) | |
95 | { | |
96 | in_match_data = set_value; | |
97 | } | |
98 | ||
294fbfc8 TS |
99 | /* Free a gfc_data_variable structure and everything beneath it. */ |
100 | ||
101 | static void | |
636dff67 | 102 | free_variable (gfc_data_variable *p) |
294fbfc8 TS |
103 | { |
104 | gfc_data_variable *q; | |
105 | ||
106 | for (; p; p = q) | |
107 | { | |
108 | q = p->next; | |
109 | gfc_free_expr (p->expr); | |
110 | gfc_free_iterator (&p->iter, 0); | |
111 | free_variable (p->list); | |
294fbfc8 TS |
112 | gfc_free (p); |
113 | } | |
114 | } | |
115 | ||
116 | ||
117 | /* Free a gfc_data_value structure and everything beneath it. */ | |
118 | ||
119 | static void | |
636dff67 | 120 | free_value (gfc_data_value *p) |
294fbfc8 TS |
121 | { |
122 | gfc_data_value *q; | |
123 | ||
124 | for (; p; p = q) | |
125 | { | |
126 | q = p->next; | |
127 | gfc_free_expr (p->expr); | |
128 | gfc_free (p); | |
129 | } | |
130 | } | |
131 | ||
132 | ||
133 | /* Free a list of gfc_data structures. */ | |
134 | ||
135 | void | |
636dff67 | 136 | gfc_free_data (gfc_data *p) |
294fbfc8 TS |
137 | { |
138 | gfc_data *q; | |
139 | ||
140 | for (; p; p = q) | |
141 | { | |
142 | q = p->next; | |
294fbfc8 TS |
143 | free_variable (p->var); |
144 | free_value (p->value); | |
294fbfc8 TS |
145 | gfc_free (p); |
146 | } | |
147 | } | |
148 | ||
149 | ||
a9f6f1f2 | 150 | /* Free all data in a namespace. */ |
636dff67 | 151 | |
a9f6f1f2 | 152 | static void |
66e4ab31 | 153 | gfc_free_data_all (gfc_namespace *ns) |
a9f6f1f2 JD |
154 | { |
155 | gfc_data *d; | |
156 | ||
157 | for (;ns->data;) | |
158 | { | |
159 | d = ns->data->next; | |
160 | gfc_free (ns->data); | |
161 | ns->data = d; | |
162 | } | |
163 | } | |
164 | ||
165 | ||
294fbfc8 TS |
166 | static match var_element (gfc_data_variable *); |
167 | ||
168 | /* Match a list of variables terminated by an iterator and a right | |
169 | parenthesis. */ | |
170 | ||
171 | static match | |
636dff67 | 172 | var_list (gfc_data_variable *parent) |
294fbfc8 TS |
173 | { |
174 | gfc_data_variable *tail, var; | |
175 | match m; | |
176 | ||
177 | m = var_element (&var); | |
178 | if (m == MATCH_ERROR) | |
179 | return MATCH_ERROR; | |
180 | if (m == MATCH_NO) | |
181 | goto syntax; | |
182 | ||
183 | tail = gfc_get_data_variable (); | |
184 | *tail = var; | |
185 | ||
186 | parent->list = tail; | |
187 | ||
188 | for (;;) | |
189 | { | |
190 | if (gfc_match_char (',') != MATCH_YES) | |
191 | goto syntax; | |
192 | ||
193 | m = gfc_match_iterator (&parent->iter, 1); | |
194 | if (m == MATCH_YES) | |
195 | break; | |
196 | if (m == MATCH_ERROR) | |
197 | return MATCH_ERROR; | |
198 | ||
199 | m = var_element (&var); | |
200 | if (m == MATCH_ERROR) | |
201 | return MATCH_ERROR; | |
202 | if (m == MATCH_NO) | |
203 | goto syntax; | |
204 | ||
205 | tail->next = gfc_get_data_variable (); | |
206 | tail = tail->next; | |
207 | ||
208 | *tail = var; | |
209 | } | |
210 | ||
211 | if (gfc_match_char (')') != MATCH_YES) | |
212 | goto syntax; | |
213 | return MATCH_YES; | |
214 | ||
215 | syntax: | |
216 | gfc_syntax_error (ST_DATA); | |
217 | return MATCH_ERROR; | |
218 | } | |
219 | ||
220 | ||
221 | /* Match a single element in a data variable list, which can be a | |
222 | variable-iterator list. */ | |
223 | ||
224 | static match | |
636dff67 | 225 | var_element (gfc_data_variable *new) |
294fbfc8 TS |
226 | { |
227 | match m; | |
228 | gfc_symbol *sym; | |
229 | ||
230 | memset (new, 0, sizeof (gfc_data_variable)); | |
231 | ||
232 | if (gfc_match_char ('(') == MATCH_YES) | |
233 | return var_list (new); | |
234 | ||
235 | m = gfc_match_variable (&new->expr, 0); | |
236 | if (m != MATCH_YES) | |
237 | return m; | |
238 | ||
239 | sym = new->expr->symtree->n.sym; | |
240 | ||
636dff67 SK |
241 | if (!sym->attr.function && gfc_current_ns->parent |
242 | && gfc_current_ns->parent == sym->ns) | |
294fbfc8 | 243 | { |
4075a94e | 244 | gfc_error ("Host associated variable '%s' may not be in the DATA " |
e25a0da3 | 245 | "statement at %C", sym->name); |
294fbfc8 TS |
246 | return MATCH_ERROR; |
247 | } | |
248 | ||
4075a94e | 249 | if (gfc_current_state () != COMP_BLOCK_DATA |
636dff67 SK |
250 | && sym->attr.in_common |
251 | && gfc_notify_std (GFC_STD_GNU, "Extension: initialization of " | |
252 | "common block variable '%s' in DATA statement at %C", | |
253 | sym->name) == FAILURE) | |
4075a94e | 254 | return MATCH_ERROR; |
294fbfc8 | 255 | |
231b2fcc | 256 | if (gfc_add_data (&sym->attr, sym->name, &new->expr->where) == FAILURE) |
294fbfc8 TS |
257 | return MATCH_ERROR; |
258 | ||
259 | return MATCH_YES; | |
260 | } | |
261 | ||
262 | ||
263 | /* Match the top-level list of data variables. */ | |
264 | ||
265 | static match | |
636dff67 | 266 | top_var_list (gfc_data *d) |
294fbfc8 TS |
267 | { |
268 | gfc_data_variable var, *tail, *new; | |
269 | match m; | |
270 | ||
271 | tail = NULL; | |
272 | ||
273 | for (;;) | |
274 | { | |
275 | m = var_element (&var); | |
276 | if (m == MATCH_NO) | |
277 | goto syntax; | |
278 | if (m == MATCH_ERROR) | |
279 | return MATCH_ERROR; | |
280 | ||
281 | new = gfc_get_data_variable (); | |
282 | *new = var; | |
283 | ||
284 | if (tail == NULL) | |
285 | d->var = new; | |
286 | else | |
287 | tail->next = new; | |
288 | ||
289 | tail = new; | |
290 | ||
291 | if (gfc_match_char ('/') == MATCH_YES) | |
292 | break; | |
293 | if (gfc_match_char (',') != MATCH_YES) | |
294 | goto syntax; | |
295 | } | |
296 | ||
297 | return MATCH_YES; | |
298 | ||
299 | syntax: | |
300 | gfc_syntax_error (ST_DATA); | |
a9f6f1f2 | 301 | gfc_free_data_all (gfc_current_ns); |
294fbfc8 TS |
302 | return MATCH_ERROR; |
303 | } | |
304 | ||
305 | ||
306 | static match | |
636dff67 | 307 | match_data_constant (gfc_expr **result) |
294fbfc8 TS |
308 | { |
309 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
310 | gfc_symbol *sym; | |
311 | gfc_expr *expr; | |
312 | match m; | |
36d3fb4c | 313 | locus old_loc; |
294fbfc8 TS |
314 | |
315 | m = gfc_match_literal_constant (&expr, 1); | |
316 | if (m == MATCH_YES) | |
317 | { | |
318 | *result = expr; | |
319 | return MATCH_YES; | |
320 | } | |
321 | ||
322 | if (m == MATCH_ERROR) | |
323 | return MATCH_ERROR; | |
324 | ||
325 | m = gfc_match_null (result); | |
326 | if (m != MATCH_NO) | |
327 | return m; | |
328 | ||
36d3fb4c PT |
329 | old_loc = gfc_current_locus; |
330 | ||
331 | /* Should this be a structure component, try to match it | |
332 | before matching a name. */ | |
333 | m = gfc_match_rvalue (result); | |
334 | if (m == MATCH_ERROR) | |
335 | return m; | |
336 | ||
337 | if (m == MATCH_YES && (*result)->expr_type == EXPR_STRUCTURE) | |
338 | { | |
339 | if (gfc_simplify_expr (*result, 0) == FAILURE) | |
340 | m = MATCH_ERROR; | |
341 | return m; | |
342 | } | |
343 | ||
344 | gfc_current_locus = old_loc; | |
345 | ||
294fbfc8 TS |
346 | m = gfc_match_name (name); |
347 | if (m != MATCH_YES) | |
348 | return m; | |
349 | ||
350 | if (gfc_find_symbol (name, NULL, 1, &sym)) | |
351 | return MATCH_ERROR; | |
352 | ||
353 | if (sym == NULL | |
354 | || (sym->attr.flavor != FL_PARAMETER && sym->attr.flavor != FL_DERIVED)) | |
355 | { | |
356 | gfc_error ("Symbol '%s' must be a PARAMETER in DATA statement at %C", | |
357 | name); | |
358 | return MATCH_ERROR; | |
359 | } | |
360 | else if (sym->attr.flavor == FL_DERIVED) | |
361 | return gfc_match_structure_constructor (sym, result); | |
362 | ||
363 | *result = gfc_copy_expr (sym->value); | |
364 | return MATCH_YES; | |
365 | } | |
366 | ||
367 | ||
368 | /* Match a list of values in a DATA statement. The leading '/' has | |
369 | already been seen at this point. */ | |
370 | ||
371 | static match | |
636dff67 | 372 | top_val_list (gfc_data *data) |
294fbfc8 TS |
373 | { |
374 | gfc_data_value *new, *tail; | |
375 | gfc_expr *expr; | |
376 | const char *msg; | |
377 | match m; | |
378 | ||
379 | tail = NULL; | |
380 | ||
381 | for (;;) | |
382 | { | |
383 | m = match_data_constant (&expr); | |
384 | if (m == MATCH_NO) | |
385 | goto syntax; | |
386 | if (m == MATCH_ERROR) | |
387 | return MATCH_ERROR; | |
388 | ||
389 | new = gfc_get_data_value (); | |
390 | ||
391 | if (tail == NULL) | |
392 | data->value = new; | |
393 | else | |
394 | tail->next = new; | |
395 | ||
396 | tail = new; | |
397 | ||
398 | if (expr->ts.type != BT_INTEGER || gfc_match_char ('*') != MATCH_YES) | |
399 | { | |
400 | tail->expr = expr; | |
401 | tail->repeat = 1; | |
402 | } | |
403 | else | |
404 | { | |
405 | signed int tmp; | |
406 | msg = gfc_extract_int (expr, &tmp); | |
407 | gfc_free_expr (expr); | |
408 | if (msg != NULL) | |
409 | { | |
410 | gfc_error (msg); | |
411 | return MATCH_ERROR; | |
412 | } | |
413 | tail->repeat = tmp; | |
414 | ||
415 | m = match_data_constant (&tail->expr); | |
416 | if (m == MATCH_NO) | |
417 | goto syntax; | |
418 | if (m == MATCH_ERROR) | |
419 | return MATCH_ERROR; | |
420 | } | |
421 | ||
422 | if (gfc_match_char ('/') == MATCH_YES) | |
423 | break; | |
424 | if (gfc_match_char (',') == MATCH_NO) | |
425 | goto syntax; | |
426 | } | |
427 | ||
428 | return MATCH_YES; | |
429 | ||
430 | syntax: | |
431 | gfc_syntax_error (ST_DATA); | |
a9f6f1f2 | 432 | gfc_free_data_all (gfc_current_ns); |
294fbfc8 TS |
433 | return MATCH_ERROR; |
434 | } | |
435 | ||
436 | ||
437 | /* Matches an old style initialization. */ | |
438 | ||
439 | static match | |
440 | match_old_style_init (const char *name) | |
441 | { | |
442 | match m; | |
443 | gfc_symtree *st; | |
ed0e3607 | 444 | gfc_symbol *sym; |
294fbfc8 TS |
445 | gfc_data *newdata; |
446 | ||
447 | /* Set up data structure to hold initializers. */ | |
448 | gfc_find_sym_tree (name, NULL, 0, &st); | |
ed0e3607 AL |
449 | sym = st->n.sym; |
450 | ||
294fbfc8 TS |
451 | newdata = gfc_get_data (); |
452 | newdata->var = gfc_get_data_variable (); | |
453 | newdata->var->expr = gfc_get_variable_expr (st); | |
8c5c0b80 | 454 | newdata->where = gfc_current_locus; |
294fbfc8 | 455 | |
66e4ab31 | 456 | /* Match initial value list. This also eats the terminal '/'. */ |
294fbfc8 TS |
457 | m = top_val_list (newdata); |
458 | if (m != MATCH_YES) | |
459 | { | |
460 | gfc_free (newdata); | |
461 | return m; | |
462 | } | |
463 | ||
464 | if (gfc_pure (NULL)) | |
465 | { | |
466 | gfc_error ("Initialization at %C is not allowed in a PURE procedure"); | |
467 | gfc_free (newdata); | |
468 | return MATCH_ERROR; | |
469 | } | |
470 | ||
ed0e3607 AL |
471 | /* Mark the variable as having appeared in a data statement. */ |
472 | if (gfc_add_data (&sym->attr, sym->name, &sym->declared_at) == FAILURE) | |
473 | { | |
474 | gfc_free (newdata); | |
475 | return MATCH_ERROR; | |
476 | } | |
477 | ||
294fbfc8 TS |
478 | /* Chain in namespace list of DATA initializers. */ |
479 | newdata->next = gfc_current_ns->data; | |
480 | gfc_current_ns->data = newdata; | |
481 | ||
482 | return m; | |
483 | } | |
484 | ||
636dff67 | 485 | |
294fbfc8 | 486 | /* Match the stuff following a DATA statement. If ERROR_FLAG is set, |
13795658 | 487 | we are matching a DATA statement and are therefore issuing an error |
d51347f9 | 488 | if we encounter something unexpected, if not, we're trying to match |
69de3b83 | 489 | an old-style initialization expression of the form INTEGER I /2/. */ |
294fbfc8 TS |
490 | |
491 | match | |
492 | gfc_match_data (void) | |
493 | { | |
494 | gfc_data *new; | |
495 | match m; | |
496 | ||
2220652d PT |
497 | gfc_set_in_match_data (true); |
498 | ||
294fbfc8 TS |
499 | for (;;) |
500 | { | |
501 | new = gfc_get_data (); | |
502 | new->where = gfc_current_locus; | |
503 | ||
504 | m = top_var_list (new); | |
505 | if (m != MATCH_YES) | |
506 | goto cleanup; | |
507 | ||
508 | m = top_val_list (new); | |
509 | if (m != MATCH_YES) | |
510 | goto cleanup; | |
511 | ||
512 | new->next = gfc_current_ns->data; | |
513 | gfc_current_ns->data = new; | |
514 | ||
515 | if (gfc_match_eos () == MATCH_YES) | |
516 | break; | |
517 | ||
518 | gfc_match_char (','); /* Optional comma */ | |
519 | } | |
520 | ||
2220652d PT |
521 | gfc_set_in_match_data (false); |
522 | ||
294fbfc8 TS |
523 | if (gfc_pure (NULL)) |
524 | { | |
525 | gfc_error ("DATA statement at %C is not allowed in a PURE procedure"); | |
526 | return MATCH_ERROR; | |
527 | } | |
528 | ||
529 | return MATCH_YES; | |
530 | ||
531 | cleanup: | |
2220652d | 532 | gfc_set_in_match_data (false); |
294fbfc8 TS |
533 | gfc_free_data (new); |
534 | return MATCH_ERROR; | |
535 | } | |
536 | ||
537 | ||
538 | /************************ Declaration statements *********************/ | |
539 | ||
6de9cd9a DN |
540 | /* Match an intent specification. Since this can only happen after an |
541 | INTENT word, a legal intent-spec must follow. */ | |
542 | ||
543 | static sym_intent | |
544 | match_intent_spec (void) | |
545 | { | |
546 | ||
547 | if (gfc_match (" ( in out )") == MATCH_YES) | |
548 | return INTENT_INOUT; | |
549 | if (gfc_match (" ( in )") == MATCH_YES) | |
550 | return INTENT_IN; | |
551 | if (gfc_match (" ( out )") == MATCH_YES) | |
552 | return INTENT_OUT; | |
553 | ||
554 | gfc_error ("Bad INTENT specification at %C"); | |
555 | return INTENT_UNKNOWN; | |
556 | } | |
557 | ||
558 | ||
559 | /* Matches a character length specification, which is either a | |
560 | specification expression or a '*'. */ | |
561 | ||
562 | static match | |
636dff67 | 563 | char_len_param_value (gfc_expr **expr) |
6de9cd9a | 564 | { |
6de9cd9a DN |
565 | if (gfc_match_char ('*') == MATCH_YES) |
566 | { | |
567 | *expr = NULL; | |
568 | return MATCH_YES; | |
569 | } | |
570 | ||
571 | return gfc_match_expr (expr); | |
572 | } | |
573 | ||
574 | ||
575 | /* A character length is a '*' followed by a literal integer or a | |
576 | char_len_param_value in parenthesis. */ | |
577 | ||
578 | static match | |
636dff67 | 579 | match_char_length (gfc_expr **expr) |
6de9cd9a | 580 | { |
5cf54585 | 581 | int length; |
6de9cd9a DN |
582 | match m; |
583 | ||
584 | m = gfc_match_char ('*'); | |
585 | if (m != MATCH_YES) | |
586 | return m; | |
587 | ||
5cf54585 | 588 | m = gfc_match_small_literal_int (&length, NULL); |
6de9cd9a DN |
589 | if (m == MATCH_ERROR) |
590 | return m; | |
591 | ||
592 | if (m == MATCH_YES) | |
593 | { | |
594 | *expr = gfc_int_expr (length); | |
595 | return m; | |
596 | } | |
597 | ||
598 | if (gfc_match_char ('(') == MATCH_NO) | |
599 | goto syntax; | |
600 | ||
601 | m = char_len_param_value (expr); | |
602 | if (m == MATCH_ERROR) | |
603 | return m; | |
604 | if (m == MATCH_NO) | |
605 | goto syntax; | |
606 | ||
607 | if (gfc_match_char (')') == MATCH_NO) | |
608 | { | |
609 | gfc_free_expr (*expr); | |
610 | *expr = NULL; | |
611 | goto syntax; | |
612 | } | |
613 | ||
614 | return MATCH_YES; | |
615 | ||
616 | syntax: | |
617 | gfc_error ("Syntax error in character length specification at %C"); | |
618 | return MATCH_ERROR; | |
619 | } | |
620 | ||
621 | ||
9e35b386 EE |
622 | /* Special subroutine for finding a symbol. Check if the name is found |
623 | in the current name space. If not, and we're compiling a function or | |
624 | subroutine and the parent compilation unit is an interface, then check | |
625 | to see if the name we've been given is the name of the interface | |
626 | (located in another namespace). */ | |
6de9cd9a DN |
627 | |
628 | static int | |
636dff67 | 629 | find_special (const char *name, gfc_symbol **result) |
6de9cd9a DN |
630 | { |
631 | gfc_state_data *s; | |
9e35b386 | 632 | int i; |
6de9cd9a | 633 | |
9e35b386 | 634 | i = gfc_get_symbol (name, NULL, result); |
d51347f9 | 635 | if (i == 0) |
9e35b386 | 636 | goto end; |
d51347f9 | 637 | |
6de9cd9a DN |
638 | if (gfc_current_state () != COMP_SUBROUTINE |
639 | && gfc_current_state () != COMP_FUNCTION) | |
9e35b386 | 640 | goto end; |
6de9cd9a DN |
641 | |
642 | s = gfc_state_stack->previous; | |
643 | if (s == NULL) | |
9e35b386 | 644 | goto end; |
6de9cd9a DN |
645 | |
646 | if (s->state != COMP_INTERFACE) | |
9e35b386 | 647 | goto end; |
6de9cd9a | 648 | if (s->sym == NULL) |
66e4ab31 | 649 | goto end; /* Nameless interface. */ |
6de9cd9a DN |
650 | |
651 | if (strcmp (name, s->sym->name) == 0) | |
652 | { | |
653 | *result = s->sym; | |
654 | return 0; | |
655 | } | |
656 | ||
9e35b386 EE |
657 | end: |
658 | return i; | |
6de9cd9a DN |
659 | } |
660 | ||
661 | ||
662 | /* Special subroutine for getting a symbol node associated with a | |
663 | procedure name, used in SUBROUTINE and FUNCTION statements. The | |
664 | symbol is created in the parent using with symtree node in the | |
665 | child unit pointing to the symbol. If the current namespace has no | |
666 | parent, then the symbol is just created in the current unit. */ | |
667 | ||
668 | static int | |
636dff67 | 669 | get_proc_name (const char *name, gfc_symbol **result, bool module_fcn_entry) |
6de9cd9a DN |
670 | { |
671 | gfc_symtree *st; | |
672 | gfc_symbol *sym; | |
673 | int rc; | |
674 | ||
1a492601 PT |
675 | /* Module functions have to be left in their own namespace because |
676 | they have potentially (almost certainly!) already been referenced. | |
677 | In this sense, they are rather like external functions. This is | |
678 | fixed up in resolve.c(resolve_entries), where the symbol name- | |
679 | space is set to point to the master function, so that the fake | |
680 | result mechanism can work. */ | |
681 | if (module_fcn_entry) | |
6c12686b PT |
682 | { |
683 | /* Present if entry is declared to be a module procedure. */ | |
684 | rc = gfc_find_symbol (name, gfc_current_ns->parent, 0, result); | |
685 | if (*result == NULL) | |
686 | rc = gfc_get_symbol (name, NULL, result); | |
687 | } | |
68ea355b PT |
688 | else |
689 | rc = gfc_get_symbol (name, gfc_current_ns->parent, result); | |
6de9cd9a | 690 | |
68ea355b | 691 | sym = *result; |
2c693a24 | 692 | gfc_current_ns->refs++; |
6de9cd9a | 693 | |
68ea355b PT |
694 | if (sym && !sym->new && gfc_current_state () != COMP_INTERFACE) |
695 | { | |
cda7004b PT |
696 | /* Trap another encompassed procedure with the same name. All |
697 | these conditions are necessary to avoid picking up an entry | |
698 | whose name clashes with that of the encompassing procedure; | |
699 | this is handled using gsymbols to register unique,globally | |
700 | accessible names. */ | |
68ea355b | 701 | if (sym->attr.flavor != 0 |
636dff67 SK |
702 | && sym->attr.proc != 0 |
703 | && (sym->attr.subroutine || sym->attr.function) | |
704 | && sym->attr.if_source != IFSRC_UNKNOWN) | |
68ea355b PT |
705 | gfc_error_now ("Procedure '%s' at %C is already defined at %L", |
706 | name, &sym->declared_at); | |
707 | ||
fd3e70af JD |
708 | /* Trap a procedure with a name the same as interface in the |
709 | encompassing scope. */ | |
710 | if (sym->attr.generic != 0 | |
711 | && (sym->attr.subroutine || sym->attr.function)) | |
712 | gfc_error_now ("Name '%s' at %C is already defined" | |
713 | " as a generic interface at %L", | |
714 | name, &sym->declared_at); | |
715 | ||
68ea355b PT |
716 | /* Trap declarations of attributes in encompassing scope. The |
717 | signature for this is that ts.kind is set. Legitimate | |
718 | references only set ts.type. */ | |
719 | if (sym->ts.kind != 0 | |
636dff67 SK |
720 | && !sym->attr.implicit_type |
721 | && sym->attr.proc == 0 | |
722 | && gfc_current_ns->parent != NULL | |
723 | && sym->attr.access == 0 | |
724 | && !module_fcn_entry) | |
725 | gfc_error_now ("Procedure '%s' at %C has an explicit interface " | |
726 | "and must not have attributes declared at %L", | |
68ea355b PT |
727 | name, &sym->declared_at); |
728 | } | |
729 | ||
730 | if (gfc_current_ns->parent == NULL || *result == NULL) | |
731 | return rc; | |
6de9cd9a | 732 | |
1a492601 PT |
733 | /* Module function entries will already have a symtree in |
734 | the current namespace but will need one at module level. */ | |
735 | if (module_fcn_entry) | |
6c12686b PT |
736 | { |
737 | /* Present if entry is declared to be a module procedure. */ | |
738 | rc = gfc_find_sym_tree (name, gfc_current_ns->parent, 0, &st); | |
739 | if (st == NULL) | |
740 | st = gfc_new_symtree (&gfc_current_ns->parent->sym_root, name); | |
741 | } | |
1a492601 PT |
742 | else |
743 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); | |
6de9cd9a | 744 | |
6de9cd9a DN |
745 | st->n.sym = sym; |
746 | sym->refs++; | |
747 | ||
66e4ab31 | 748 | /* See if the procedure should be a module procedure. */ |
6de9cd9a | 749 | |
1a492601 | 750 | if (((sym->ns->proc_name != NULL |
6c12686b PT |
751 | && sym->ns->proc_name->attr.flavor == FL_MODULE |
752 | && sym->attr.proc != PROC_MODULE) | |
753 | || (module_fcn_entry && sym->attr.proc != PROC_MODULE)) | |
754 | && gfc_add_procedure (&sym->attr, PROC_MODULE, | |
755 | sym->name, NULL) == FAILURE) | |
6de9cd9a DN |
756 | rc = 2; |
757 | ||
758 | return rc; | |
759 | } | |
760 | ||
761 | ||
a8b3b0b6 CR |
762 | /* Verify that the given symbol representing a parameter is C |
763 | interoperable, by checking to see if it was marked as such after | |
764 | its declaration. If the given symbol is not interoperable, a | |
765 | warning is reported, thus removing the need to return the status to | |
766 | the calling function. The standard does not require the user use | |
767 | one of the iso_c_binding named constants to declare an | |
768 | interoperable parameter, but we can't be sure if the param is C | |
769 | interop or not if the user doesn't. For example, integer(4) may be | |
770 | legal Fortran, but doesn't have meaning in C. It may interop with | |
771 | a number of the C types, which causes a problem because the | |
772 | compiler can't know which one. This code is almost certainly not | |
773 | portable, and the user will get what they deserve if the C type | |
774 | across platforms isn't always interoperable with integer(4). If | |
775 | the user had used something like integer(c_int) or integer(c_long), | |
776 | the compiler could have automatically handled the varying sizes | |
777 | across platforms. */ | |
778 | ||
779 | try | |
780 | verify_c_interop_param (gfc_symbol *sym) | |
781 | { | |
782 | int is_c_interop = 0; | |
783 | try retval = SUCCESS; | |
784 | ||
785 | /* We check implicitly typed variables in symbol.c:gfc_set_default_type(). | |
786 | Don't repeat the checks here. */ | |
787 | if (sym->attr.implicit_type) | |
788 | return SUCCESS; | |
789 | ||
790 | /* For subroutines or functions that are passed to a BIND(C) procedure, | |
791 | they're interoperable if they're BIND(C) and their params are all | |
792 | interoperable. */ | |
793 | if (sym->attr.flavor == FL_PROCEDURE) | |
794 | { | |
795 | if (sym->attr.is_bind_c == 0) | |
796 | { | |
797 | gfc_error_now ("Procedure '%s' at %L must have the BIND(C) " | |
798 | "attribute to be C interoperable", sym->name, | |
799 | &(sym->declared_at)); | |
800 | ||
801 | return FAILURE; | |
802 | } | |
803 | else | |
804 | { | |
805 | if (sym->attr.is_c_interop == 1) | |
806 | /* We've already checked this procedure; don't check it again. */ | |
807 | return SUCCESS; | |
808 | else | |
809 | return verify_bind_c_sym (sym, &(sym->ts), sym->attr.in_common, | |
810 | sym->common_block); | |
811 | } | |
812 | } | |
813 | ||
814 | /* See if we've stored a reference to a procedure that owns sym. */ | |
815 | if (sym->ns != NULL && sym->ns->proc_name != NULL) | |
816 | { | |
817 | if (sym->ns->proc_name->attr.is_bind_c == 1) | |
818 | { | |
819 | is_c_interop = | |
820 | (verify_c_interop (&(sym->ts), sym->name, &(sym->declared_at)) | |
821 | == SUCCESS ? 1 : 0); | |
822 | ||
823 | if (is_c_interop != 1) | |
824 | { | |
825 | /* Make personalized messages to give better feedback. */ | |
826 | if (sym->ts.type == BT_DERIVED) | |
827 | gfc_error ("Type '%s' at %L is a parameter to the BIND(C) " | |
828 | " procedure '%s' but is not C interoperable " | |
829 | "because derived type '%s' is not C interoperable", | |
830 | sym->name, &(sym->declared_at), | |
831 | sym->ns->proc_name->name, | |
832 | sym->ts.derived->name); | |
833 | else | |
834 | gfc_warning ("Variable '%s' at %L is a parameter to the " | |
835 | "BIND(C) procedure '%s' but may not be C " | |
836 | "interoperable", | |
837 | sym->name, &(sym->declared_at), | |
838 | sym->ns->proc_name->name); | |
839 | } | |
840 | ||
841 | /* We have to make sure that any param to a bind(c) routine does | |
842 | not have the allocatable, pointer, or optional attributes, | |
843 | according to J3/04-007, section 5.1. */ | |
844 | if (sym->attr.allocatable == 1) | |
845 | { | |
846 | gfc_error ("Variable '%s' at %L cannot have the " | |
847 | "ALLOCATABLE attribute because procedure '%s'" | |
848 | " is BIND(C)", sym->name, &(sym->declared_at), | |
849 | sym->ns->proc_name->name); | |
850 | retval = FAILURE; | |
851 | } | |
852 | ||
853 | if (sym->attr.pointer == 1) | |
854 | { | |
855 | gfc_error ("Variable '%s' at %L cannot have the " | |
856 | "POINTER attribute because procedure '%s'" | |
857 | " is BIND(C)", sym->name, &(sym->declared_at), | |
858 | sym->ns->proc_name->name); | |
859 | retval = FAILURE; | |
860 | } | |
861 | ||
862 | if (sym->attr.optional == 1) | |
863 | { | |
864 | gfc_error ("Variable '%s' at %L cannot have the " | |
865 | "OPTIONAL attribute because procedure '%s'" | |
866 | " is BIND(C)", sym->name, &(sym->declared_at), | |
867 | sym->ns->proc_name->name); | |
868 | retval = FAILURE; | |
869 | } | |
870 | ||
871 | /* Make sure that if it has the dimension attribute, that it is | |
872 | either assumed size or explicit shape. */ | |
873 | if (sym->as != NULL) | |
874 | { | |
875 | if (sym->as->type == AS_ASSUMED_SHAPE) | |
876 | { | |
877 | gfc_error ("Assumed-shape array '%s' at %L cannot be an " | |
878 | "argument to the procedure '%s' at %L because " | |
879 | "the procedure is BIND(C)", sym->name, | |
880 | &(sym->declared_at), sym->ns->proc_name->name, | |
881 | &(sym->ns->proc_name->declared_at)); | |
882 | retval = FAILURE; | |
883 | } | |
884 | ||
885 | if (sym->as->type == AS_DEFERRED) | |
886 | { | |
887 | gfc_error ("Deferred-shape array '%s' at %L cannot be an " | |
888 | "argument to the procedure '%s' at %L because " | |
889 | "the procedure is BIND(C)", sym->name, | |
890 | &(sym->declared_at), sym->ns->proc_name->name, | |
891 | &(sym->ns->proc_name->declared_at)); | |
892 | retval = FAILURE; | |
893 | } | |
894 | } | |
895 | } | |
896 | } | |
897 | ||
898 | return retval; | |
899 | } | |
900 | ||
901 | ||
902 | /* Function called by variable_decl() that adds a name to the symbol table. */ | |
6de9cd9a DN |
903 | |
904 | static try | |
636dff67 SK |
905 | build_sym (const char *name, gfc_charlen *cl, |
906 | gfc_array_spec **as, locus *var_locus) | |
6de9cd9a DN |
907 | { |
908 | symbol_attribute attr; | |
909 | gfc_symbol *sym; | |
910 | ||
9e35b386 | 911 | if (gfc_get_symbol (name, NULL, &sym)) |
6de9cd9a DN |
912 | return FAILURE; |
913 | ||
66e4ab31 | 914 | /* Start updating the symbol table. Add basic type attribute if present. */ |
6de9cd9a | 915 | if (current_ts.type != BT_UNKNOWN |
636dff67 SK |
916 | && (sym->attr.implicit_type == 0 |
917 | || !gfc_compare_types (&sym->ts, ¤t_ts)) | |
6de9cd9a DN |
918 | && gfc_add_type (sym, ¤t_ts, var_locus) == FAILURE) |
919 | return FAILURE; | |
920 | ||
921 | if (sym->ts.type == BT_CHARACTER) | |
922 | sym->ts.cl = cl; | |
923 | ||
924 | /* Add dimension attribute if present. */ | |
925 | if (gfc_set_array_spec (sym, *as, var_locus) == FAILURE) | |
926 | return FAILURE; | |
927 | *as = NULL; | |
928 | ||
929 | /* Add attribute to symbol. The copy is so that we can reset the | |
930 | dimension attribute. */ | |
931 | attr = current_attr; | |
932 | attr.dimension = 0; | |
933 | ||
934 | if (gfc_copy_attr (&sym->attr, &attr, var_locus) == FAILURE) | |
935 | return FAILURE; | |
936 | ||
a8b3b0b6 CR |
937 | /* Finish any work that may need to be done for the binding label, |
938 | if it's a bind(c). The bind(c) attr is found before the symbol | |
939 | is made, and before the symbol name (for data decls), so the | |
940 | current_ts is holding the binding label, or nothing if the | |
941 | name= attr wasn't given. Therefore, test here if we're dealing | |
942 | with a bind(c) and make sure the binding label is set correctly. */ | |
943 | if (sym->attr.is_bind_c == 1) | |
944 | { | |
945 | if (sym->binding_label[0] == '\0') | |
946 | { | |
947 | /* Here, we're not checking the numIdents (the last param). | |
948 | This could be an error we're letting slip through! */ | |
949 | if (set_binding_label (sym->binding_label, sym->name, 1) == FAILURE) | |
950 | return FAILURE; | |
951 | } | |
952 | } | |
953 | ||
954 | /* See if we know we're in a common block, and if it's a bind(c) | |
955 | common then we need to make sure we're an interoperable type. */ | |
956 | if (sym->attr.in_common == 1) | |
957 | { | |
958 | /* Test the common block object. */ | |
959 | if (sym->common_block != NULL && sym->common_block->is_bind_c == 1 | |
960 | && sym->ts.is_c_interop != 1) | |
961 | { | |
962 | gfc_error_now ("Variable '%s' in common block '%s' at %C " | |
963 | "must be declared with a C interoperable " | |
964 | "kind since common block '%s' is BIND(C)", | |
965 | sym->name, sym->common_block->name, | |
966 | sym->common_block->name); | |
967 | gfc_clear_error (); | |
968 | } | |
969 | } | |
970 | ||
9a3db5a3 PT |
971 | sym->attr.implied_index = 0; |
972 | ||
6de9cd9a DN |
973 | return SUCCESS; |
974 | } | |
975 | ||
636dff67 | 976 | |
df7cc9b5 FW |
977 | /* Set character constant to the given length. The constant will be padded or |
978 | truncated. */ | |
979 | ||
980 | void | |
636dff67 | 981 | gfc_set_constant_character_len (int len, gfc_expr *expr, bool array) |
df7cc9b5 | 982 | { |
636dff67 | 983 | char *s; |
df7cc9b5 FW |
984 | int slen; |
985 | ||
986 | gcc_assert (expr->expr_type == EXPR_CONSTANT); | |
987 | gcc_assert (expr->ts.type == BT_CHARACTER && expr->ts.kind == 1); | |
988 | ||
989 | slen = expr->value.character.length; | |
990 | if (len != slen) | |
991 | { | |
150675a8 | 992 | s = gfc_getmem (len + 1); |
df7cc9b5 FW |
993 | memcpy (s, expr->value.character.string, MIN (len, slen)); |
994 | if (len > slen) | |
995 | memset (&s[slen], ' ', len - slen); | |
2220652d PT |
996 | |
997 | if (gfc_option.warn_character_truncation && slen > len) | |
998 | gfc_warning_now ("CHARACTER expression at %L is being truncated " | |
999 | "(%d/%d)", &expr->where, slen, len); | |
1000 | ||
1001 | /* Apply the standard by 'hand' otherwise it gets cleared for | |
1002 | initializers. */ | |
1003 | if (array && slen < len && !(gfc_option.allow_std & GFC_STD_GNU)) | |
1004 | gfc_error_now ("The CHARACTER elements of the array constructor " | |
1005 | "at %L must have the same length (%d/%d)", | |
636dff67 | 1006 | &expr->where, slen, len); |
2220652d | 1007 | |
150675a8 | 1008 | s[len] = '\0'; |
df7cc9b5 FW |
1009 | gfc_free (expr->value.character.string); |
1010 | expr->value.character.string = s; | |
1011 | expr->value.character.length = len; | |
1012 | } | |
1013 | } | |
6de9cd9a | 1014 | |
25d8f0a2 | 1015 | |
d51347f9 | 1016 | /* Function to create and update the enumerator history |
25d8f0a2 | 1017 | using the information passed as arguments. |
d51347f9 TB |
1018 | Pointer "max_enum" is also updated, to point to |
1019 | enum history node containing largest initializer. | |
25d8f0a2 TS |
1020 | |
1021 | SYM points to the symbol node of enumerator. | |
66e4ab31 | 1022 | INIT points to its enumerator value. */ |
25d8f0a2 | 1023 | |
d51347f9 | 1024 | static void |
636dff67 | 1025 | create_enum_history (gfc_symbol *sym, gfc_expr *init) |
25d8f0a2 TS |
1026 | { |
1027 | enumerator_history *new_enum_history; | |
1028 | gcc_assert (sym != NULL && init != NULL); | |
1029 | ||
1030 | new_enum_history = gfc_getmem (sizeof (enumerator_history)); | |
1031 | ||
1032 | new_enum_history->sym = sym; | |
1033 | new_enum_history->initializer = init; | |
1034 | new_enum_history->next = NULL; | |
1035 | ||
1036 | if (enum_history == NULL) | |
1037 | { | |
1038 | enum_history = new_enum_history; | |
1039 | max_enum = enum_history; | |
1040 | } | |
1041 | else | |
1042 | { | |
1043 | new_enum_history->next = enum_history; | |
1044 | enum_history = new_enum_history; | |
1045 | ||
d51347f9 | 1046 | if (mpz_cmp (max_enum->initializer->value.integer, |
25d8f0a2 | 1047 | new_enum_history->initializer->value.integer) < 0) |
636dff67 | 1048 | max_enum = new_enum_history; |
25d8f0a2 TS |
1049 | } |
1050 | } | |
1051 | ||
1052 | ||
d51347f9 | 1053 | /* Function to free enum kind history. */ |
25d8f0a2 | 1054 | |
d51347f9 | 1055 | void |
636dff67 | 1056 | gfc_free_enum_history (void) |
25d8f0a2 | 1057 | { |
d51347f9 TB |
1058 | enumerator_history *current = enum_history; |
1059 | enumerator_history *next; | |
25d8f0a2 TS |
1060 | |
1061 | while (current != NULL) | |
1062 | { | |
1063 | next = current->next; | |
1064 | gfc_free (current); | |
1065 | current = next; | |
1066 | } | |
1067 | max_enum = NULL; | |
1068 | enum_history = NULL; | |
1069 | } | |
1070 | ||
1071 | ||
6de9cd9a DN |
1072 | /* Function called by variable_decl() that adds an initialization |
1073 | expression to a symbol. */ | |
1074 | ||
1075 | static try | |
66e4ab31 | 1076 | add_init_expr_to_sym (const char *name, gfc_expr **initp, locus *var_locus) |
6de9cd9a DN |
1077 | { |
1078 | symbol_attribute attr; | |
1079 | gfc_symbol *sym; | |
1080 | gfc_expr *init; | |
1081 | ||
1082 | init = *initp; | |
1083 | if (find_special (name, &sym)) | |
1084 | return FAILURE; | |
1085 | ||
1086 | attr = sym->attr; | |
1087 | ||
1088 | /* If this symbol is confirming an implicit parameter type, | |
1089 | then an initialization expression is not allowed. */ | |
1090 | if (attr.flavor == FL_PARAMETER | |
1091 | && sym->value != NULL | |
1092 | && *initp != NULL) | |
1093 | { | |
1094 | gfc_error ("Initializer not allowed for PARAMETER '%s' at %C", | |
1095 | sym->name); | |
1096 | return FAILURE; | |
1097 | } | |
1098 | ||
c8e20bd0 TS |
1099 | if (attr.in_common |
1100 | && !attr.data | |
1101 | && *initp != NULL) | |
1102 | { | |
1103 | gfc_error ("Initializer not allowed for COMMON variable '%s' at %C", | |
1104 | sym->name); | |
1105 | return FAILURE; | |
1106 | } | |
1107 | ||
6de9cd9a DN |
1108 | if (init == NULL) |
1109 | { | |
1110 | /* An initializer is required for PARAMETER declarations. */ | |
1111 | if (attr.flavor == FL_PARAMETER) | |
1112 | { | |
1113 | gfc_error ("PARAMETER at %L is missing an initializer", var_locus); | |
1114 | return FAILURE; | |
1115 | } | |
1116 | } | |
1117 | else | |
1118 | { | |
1119 | /* If a variable appears in a DATA block, it cannot have an | |
1de8a836 | 1120 | initializer. */ |
6de9cd9a DN |
1121 | if (sym->attr.data) |
1122 | { | |
636dff67 SK |
1123 | gfc_error ("Variable '%s' at %C with an initializer already " |
1124 | "appears in a DATA statement", sym->name); | |
6de9cd9a DN |
1125 | return FAILURE; |
1126 | } | |
1127 | ||
75d17889 TS |
1128 | /* Check if the assignment can happen. This has to be put off |
1129 | until later for a derived type variable. */ | |
6de9cd9a DN |
1130 | if (sym->ts.type != BT_DERIVED && init->ts.type != BT_DERIVED |
1131 | && gfc_check_assign_symbol (sym, init) == FAILURE) | |
1132 | return FAILURE; | |
1133 | ||
df7cc9b5 FW |
1134 | if (sym->ts.type == BT_CHARACTER && sym->ts.cl) |
1135 | { | |
1136 | /* Update symbol character length according initializer. */ | |
1137 | if (sym->ts.cl->length == NULL) | |
1138 | { | |
66e4ab31 SK |
1139 | /* If there are multiple CHARACTER variables declared on the |
1140 | same line, we don't want them to share the same length. */ | |
4213f93b PT |
1141 | sym->ts.cl = gfc_get_charlen (); |
1142 | sym->ts.cl->next = gfc_current_ns->cl_list; | |
1143 | gfc_current_ns->cl_list = sym->ts.cl; | |
96f4873b PT |
1144 | |
1145 | if (sym->attr.flavor == FL_PARAMETER | |
636dff67 | 1146 | && init->expr_type == EXPR_ARRAY) |
96f4873b | 1147 | sym->ts.cl->length = gfc_copy_expr (init->ts.cl->length); |
df7cc9b5 FW |
1148 | } |
1149 | /* Update initializer character length according symbol. */ | |
1150 | else if (sym->ts.cl->length->expr_type == EXPR_CONSTANT) | |
1151 | { | |
1152 | int len = mpz_get_si (sym->ts.cl->length->value.integer); | |
1153 | gfc_constructor * p; | |
1154 | ||
1155 | if (init->expr_type == EXPR_CONSTANT) | |
2220652d | 1156 | gfc_set_constant_character_len (len, init, false); |
df7cc9b5 FW |
1157 | else if (init->expr_type == EXPR_ARRAY) |
1158 | { | |
dcdc7b6c PT |
1159 | /* Build a new charlen to prevent simplification from |
1160 | deleting the length before it is resolved. */ | |
1161 | init->ts.cl = gfc_get_charlen (); | |
1162 | init->ts.cl->next = gfc_current_ns->cl_list; | |
1163 | gfc_current_ns->cl_list = sym->ts.cl; | |
df7cc9b5 | 1164 | init->ts.cl->length = gfc_copy_expr (sym->ts.cl->length); |
dcdc7b6c | 1165 | |
df7cc9b5 | 1166 | for (p = init->value.constructor; p; p = p->next) |
2220652d | 1167 | gfc_set_constant_character_len (len, p->expr, false); |
df7cc9b5 FW |
1168 | } |
1169 | } | |
1170 | } | |
1171 | ||
a8b3b0b6 CR |
1172 | /* Need to check if the expression we initialized this |
1173 | to was one of the iso_c_binding named constants. If so, | |
1174 | and we're a parameter (constant), let it be iso_c. | |
1175 | For example: | |
1176 | integer(c_int), parameter :: my_int = c_int | |
1177 | integer(my_int) :: my_int_2 | |
1178 | If we mark my_int as iso_c (since we can see it's value | |
1179 | is equal to one of the named constants), then my_int_2 | |
1180 | will be considered C interoperable. */ | |
1181 | if (sym->ts.type != BT_CHARACTER && sym->ts.type != BT_DERIVED) | |
1182 | { | |
1183 | sym->ts.is_iso_c |= init->ts.is_iso_c; | |
1184 | sym->ts.is_c_interop |= init->ts.is_c_interop; | |
1185 | /* attr bits needed for module files. */ | |
1186 | sym->attr.is_iso_c |= init->ts.is_iso_c; | |
1187 | sym->attr.is_c_interop |= init->ts.is_c_interop; | |
1188 | if (init->ts.is_iso_c) | |
1189 | sym->ts.f90_type = init->ts.f90_type; | |
1190 | } | |
1191 | ||
6de9cd9a DN |
1192 | /* Add initializer. Make sure we keep the ranks sane. */ |
1193 | if (sym->attr.dimension && init->rank == 0) | |
a9b43781 PT |
1194 | { |
1195 | mpz_t size; | |
1196 | gfc_expr *array; | |
1197 | gfc_constructor *c; | |
1198 | int n; | |
1199 | if (sym->attr.flavor == FL_PARAMETER | |
1200 | && init->expr_type == EXPR_CONSTANT | |
1201 | && spec_size (sym->as, &size) == SUCCESS | |
1202 | && mpz_cmp_si (size, 0) > 0) | |
1203 | { | |
1204 | array = gfc_start_constructor (init->ts.type, init->ts.kind, | |
1205 | &init->where); | |
1206 | ||
1207 | array->value.constructor = c = NULL; | |
1208 | for (n = 0; n < (int)mpz_get_si (size); n++) | |
1209 | { | |
1210 | if (array->value.constructor == NULL) | |
1211 | { | |
1212 | array->value.constructor = c = gfc_get_constructor (); | |
1213 | c->expr = init; | |
1214 | } | |
1215 | else | |
1216 | { | |
1217 | c->next = gfc_get_constructor (); | |
1218 | c = c->next; | |
1219 | c->expr = gfc_copy_expr (init); | |
1220 | } | |
1221 | } | |
1222 | ||
1223 | array->shape = gfc_get_shape (sym->as->rank); | |
1224 | for (n = 0; n < sym->as->rank; n++) | |
1225 | spec_dimen_size (sym->as, n, &array->shape[n]); | |
1226 | ||
1227 | init = array; | |
1228 | mpz_clear (size); | |
1229 | } | |
1230 | init->rank = sym->as->rank; | |
1231 | } | |
6de9cd9a DN |
1232 | |
1233 | sym->value = init; | |
1234 | *initp = NULL; | |
1235 | } | |
1236 | ||
1237 | return SUCCESS; | |
1238 | } | |
1239 | ||
1240 | ||
1241 | /* Function called by variable_decl() that adds a name to a structure | |
1242 | being built. */ | |
1243 | ||
1244 | static try | |
636dff67 SK |
1245 | build_struct (const char *name, gfc_charlen *cl, gfc_expr **init, |
1246 | gfc_array_spec **as) | |
6de9cd9a DN |
1247 | { |
1248 | gfc_component *c; | |
1249 | ||
1250 | /* If the current symbol is of the same derived type that we're | |
1251 | constructing, it must have the pointer attribute. */ | |
1252 | if (current_ts.type == BT_DERIVED | |
1253 | && current_ts.derived == gfc_current_block () | |
1254 | && current_attr.pointer == 0) | |
1255 | { | |
1256 | gfc_error ("Component at %C must have the POINTER attribute"); | |
1257 | return FAILURE; | |
1258 | } | |
1259 | ||
636dff67 | 1260 | if (gfc_current_block ()->attr.pointer && (*as)->rank != 0) |
6de9cd9a DN |
1261 | { |
1262 | if ((*as)->type != AS_DEFERRED && (*as)->type != AS_EXPLICIT) | |
1263 | { | |
1264 | gfc_error ("Array component of structure at %C must have explicit " | |
1265 | "or deferred shape"); | |
1266 | return FAILURE; | |
1267 | } | |
1268 | } | |
1269 | ||
1270 | if (gfc_add_component (gfc_current_block (), name, &c) == FAILURE) | |
1271 | return FAILURE; | |
1272 | ||
1273 | c->ts = current_ts; | |
1274 | c->ts.cl = cl; | |
1275 | gfc_set_component_attr (c, ¤t_attr); | |
1276 | ||
1277 | c->initializer = *init; | |
1278 | *init = NULL; | |
1279 | ||
1280 | c->as = *as; | |
1281 | if (c->as != NULL) | |
1282 | c->dimension = 1; | |
1283 | *as = NULL; | |
1284 | ||
1285 | /* Check array components. */ | |
1286 | if (!c->dimension) | |
5046aff5 PT |
1287 | { |
1288 | if (c->allocatable) | |
1289 | { | |
1290 | gfc_error ("Allocatable component at %C must be an array"); | |
1291 | return FAILURE; | |
1292 | } | |
1293 | else | |
1294 | return SUCCESS; | |
1295 | } | |
6de9cd9a DN |
1296 | |
1297 | if (c->pointer) | |
1298 | { | |
1299 | if (c->as->type != AS_DEFERRED) | |
1300 | { | |
5046aff5 PT |
1301 | gfc_error ("Pointer array component of structure at %C must have a " |
1302 | "deferred shape"); | |
1303 | return FAILURE; | |
1304 | } | |
1305 | } | |
1306 | else if (c->allocatable) | |
1307 | { | |
1308 | if (c->as->type != AS_DEFERRED) | |
1309 | { | |
1310 | gfc_error ("Allocatable component of structure at %C must have a " | |
1311 | "deferred shape"); | |
6de9cd9a DN |
1312 | return FAILURE; |
1313 | } | |
1314 | } | |
1315 | else | |
1316 | { | |
1317 | if (c->as->type != AS_EXPLICIT) | |
1318 | { | |
636dff67 SK |
1319 | gfc_error ("Array component of structure at %C must have an " |
1320 | "explicit shape"); | |
6de9cd9a DN |
1321 | return FAILURE; |
1322 | } | |
1323 | } | |
1324 | ||
1325 | return SUCCESS; | |
1326 | } | |
1327 | ||
1328 | ||
1329 | /* Match a 'NULL()', and possibly take care of some side effects. */ | |
1330 | ||
1331 | match | |
636dff67 | 1332 | gfc_match_null (gfc_expr **result) |
6de9cd9a DN |
1333 | { |
1334 | gfc_symbol *sym; | |
1335 | gfc_expr *e; | |
1336 | match m; | |
1337 | ||
1338 | m = gfc_match (" null ( )"); | |
1339 | if (m != MATCH_YES) | |
1340 | return m; | |
1341 | ||
1342 | /* The NULL symbol now has to be/become an intrinsic function. */ | |
1343 | if (gfc_get_symbol ("null", NULL, &sym)) | |
1344 | { | |
1345 | gfc_error ("NULL() initialization at %C is ambiguous"); | |
1346 | return MATCH_ERROR; | |
1347 | } | |
1348 | ||
1349 | gfc_intrinsic_symbol (sym); | |
1350 | ||
1351 | if (sym->attr.proc != PROC_INTRINSIC | |
231b2fcc TS |
1352 | && (gfc_add_procedure (&sym->attr, PROC_INTRINSIC, |
1353 | sym->name, NULL) == FAILURE | |
1354 | || gfc_add_function (&sym->attr, sym->name, NULL) == FAILURE)) | |
6de9cd9a DN |
1355 | return MATCH_ERROR; |
1356 | ||
1357 | e = gfc_get_expr (); | |
63645982 | 1358 | e->where = gfc_current_locus; |
6de9cd9a DN |
1359 | e->expr_type = EXPR_NULL; |
1360 | e->ts.type = BT_UNKNOWN; | |
1361 | ||
1362 | *result = e; | |
1363 | ||
1364 | return MATCH_YES; | |
1365 | } | |
1366 | ||
1367 | ||
6de9cd9a DN |
1368 | /* Match a variable name with an optional initializer. When this |
1369 | subroutine is called, a variable is expected to be parsed next. | |
1370 | Depending on what is happening at the moment, updates either the | |
1371 | symbol table or the current interface. */ | |
1372 | ||
1373 | static match | |
949d5b72 | 1374 | variable_decl (int elem) |
6de9cd9a DN |
1375 | { |
1376 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
1377 | gfc_expr *initializer, *char_len; | |
1378 | gfc_array_spec *as; | |
83d890b9 | 1379 | gfc_array_spec *cp_as; /* Extra copy for Cray Pointees. */ |
6de9cd9a DN |
1380 | gfc_charlen *cl; |
1381 | locus var_locus; | |
1382 | match m; | |
1383 | try t; | |
83d890b9 | 1384 | gfc_symbol *sym; |
25d8f0a2 | 1385 | locus old_locus; |
6de9cd9a DN |
1386 | |
1387 | initializer = NULL; | |
1388 | as = NULL; | |
83d890b9 | 1389 | cp_as = NULL; |
25d8f0a2 | 1390 | old_locus = gfc_current_locus; |
6de9cd9a DN |
1391 | |
1392 | /* When we get here, we've just matched a list of attributes and | |
1393 | maybe a type and a double colon. The next thing we expect to see | |
1394 | is the name of the symbol. */ | |
1395 | m = gfc_match_name (name); | |
1396 | if (m != MATCH_YES) | |
1397 | goto cleanup; | |
1398 | ||
63645982 | 1399 | var_locus = gfc_current_locus; |
6de9cd9a DN |
1400 | |
1401 | /* Now we could see the optional array spec. or character length. */ | |
1402 | m = gfc_match_array_spec (&as); | |
83d890b9 AL |
1403 | if (gfc_option.flag_cray_pointer && m == MATCH_YES) |
1404 | cp_as = gfc_copy_array_spec (as); | |
1405 | else if (m == MATCH_ERROR) | |
6de9cd9a | 1406 | goto cleanup; |
25d8f0a2 | 1407 | |
6de9cd9a DN |
1408 | if (m == MATCH_NO) |
1409 | as = gfc_copy_array_spec (current_as); | |
1410 | ||
1411 | char_len = NULL; | |
1412 | cl = NULL; | |
1413 | ||
1414 | if (current_ts.type == BT_CHARACTER) | |
1415 | { | |
1416 | switch (match_char_length (&char_len)) | |
1417 | { | |
1418 | case MATCH_YES: | |
1419 | cl = gfc_get_charlen (); | |
1420 | cl->next = gfc_current_ns->cl_list; | |
1421 | gfc_current_ns->cl_list = cl; | |
1422 | ||
1423 | cl->length = char_len; | |
1424 | break; | |
1425 | ||
949d5b72 PT |
1426 | /* Non-constant lengths need to be copied after the first |
1427 | element. */ | |
6de9cd9a | 1428 | case MATCH_NO: |
949d5b72 | 1429 | if (elem > 1 && current_ts.cl->length |
636dff67 | 1430 | && current_ts.cl->length->expr_type != EXPR_CONSTANT) |
949d5b72 PT |
1431 | { |
1432 | cl = gfc_get_charlen (); | |
1433 | cl->next = gfc_current_ns->cl_list; | |
1434 | gfc_current_ns->cl_list = cl; | |
1435 | cl->length = gfc_copy_expr (current_ts.cl->length); | |
1436 | } | |
1437 | else | |
1438 | cl = current_ts.cl; | |
1439 | ||
6de9cd9a DN |
1440 | break; |
1441 | ||
1442 | case MATCH_ERROR: | |
1443 | goto cleanup; | |
1444 | } | |
1445 | } | |
1446 | ||
83d890b9 | 1447 | /* If this symbol has already shown up in a Cray Pointer declaration, |
66e4ab31 | 1448 | then we want to set the type & bail out. */ |
83d890b9 AL |
1449 | if (gfc_option.flag_cray_pointer) |
1450 | { | |
1451 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
1452 | if (sym != NULL && sym->attr.cray_pointee) | |
1453 | { | |
1454 | sym->ts.type = current_ts.type; | |
1455 | sym->ts.kind = current_ts.kind; | |
1456 | sym->ts.cl = cl; | |
1457 | sym->ts.derived = current_ts.derived; | |
a8b3b0b6 CR |
1458 | sym->ts.is_c_interop = current_ts.is_c_interop; |
1459 | sym->ts.is_iso_c = current_ts.is_iso_c; | |
83d890b9 AL |
1460 | m = MATCH_YES; |
1461 | ||
1462 | /* Check to see if we have an array specification. */ | |
1463 | if (cp_as != NULL) | |
1464 | { | |
1465 | if (sym->as != NULL) | |
1466 | { | |
e25a0da3 | 1467 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
1468 | gfc_free_array_spec (cp_as); |
1469 | m = MATCH_ERROR; | |
1470 | goto cleanup; | |
1471 | } | |
1472 | else | |
1473 | { | |
1474 | if (gfc_set_array_spec (sym, cp_as, &var_locus) == FAILURE) | |
1475 | gfc_internal_error ("Couldn't set pointee array spec."); | |
d51347f9 | 1476 | |
83d890b9 | 1477 | /* Fix the array spec. */ |
d51347f9 | 1478 | m = gfc_mod_pointee_as (sym->as); |
83d890b9 AL |
1479 | if (m == MATCH_ERROR) |
1480 | goto cleanup; | |
1481 | } | |
d51347f9 | 1482 | } |
83d890b9 AL |
1483 | goto cleanup; |
1484 | } | |
1485 | else | |
1486 | { | |
1487 | gfc_free_array_spec (cp_as); | |
1488 | } | |
1489 | } | |
d51347f9 TB |
1490 | |
1491 | ||
6de9cd9a DN |
1492 | /* OK, we've successfully matched the declaration. Now put the |
1493 | symbol in the current namespace, because it might be used in the | |
69de3b83 | 1494 | optional initialization expression for this symbol, e.g. this is |
6de9cd9a DN |
1495 | perfectly legal: |
1496 | ||
1497 | integer, parameter :: i = huge(i) | |
1498 | ||
1499 | This is only true for parameters or variables of a basic type. | |
1500 | For components of derived types, it is not true, so we don't | |
1501 | create a symbol for those yet. If we fail to create the symbol, | |
1502 | bail out. */ | |
1503 | if (gfc_current_state () != COMP_DERIVED | |
1504 | && build_sym (name, cl, &as, &var_locus) == FAILURE) | |
1505 | { | |
72af9f0b PT |
1506 | m = MATCH_ERROR; |
1507 | goto cleanup; | |
1508 | } | |
1509 | ||
6133c68a TS |
1510 | /* An interface body specifies all of the procedure's |
1511 | characteristics and these shall be consistent with those | |
1512 | specified in the procedure definition, except that the interface | |
1513 | may specify a procedure that is not pure if the procedure is | |
1514 | defined to be pure(12.3.2). */ | |
72af9f0b | 1515 | if (current_ts.type == BT_DERIVED |
636dff67 SK |
1516 | && gfc_current_ns->proc_name |
1517 | && gfc_current_ns->proc_name->attr.if_source == IFSRC_IFBODY | |
1518 | && current_ts.derived->ns != gfc_current_ns | |
1519 | && !gfc_current_ns->has_import_set) | |
72af9f0b PT |
1520 | { |
1521 | gfc_error ("the type of '%s' at %C has not been declared within the " | |
1522 | "interface", name); | |
6de9cd9a DN |
1523 | m = MATCH_ERROR; |
1524 | goto cleanup; | |
1525 | } | |
1526 | ||
1527 | /* In functions that have a RESULT variable defined, the function | |
1528 | name always refers to function calls. Therefore, the name is | |
1529 | not allowed to appear in specification statements. */ | |
1530 | if (gfc_current_state () == COMP_FUNCTION | |
1531 | && gfc_current_block () != NULL | |
1532 | && gfc_current_block ()->result != NULL | |
1533 | && gfc_current_block ()->result != gfc_current_block () | |
1534 | && strcmp (gfc_current_block ()->name, name) == 0) | |
1535 | { | |
1536 | gfc_error ("Function name '%s' not allowed at %C", name); | |
1537 | m = MATCH_ERROR; | |
1538 | goto cleanup; | |
1539 | } | |
1540 | ||
294fbfc8 TS |
1541 | /* We allow old-style initializations of the form |
1542 | integer i /2/, j(4) /3*3, 1/ | |
1543 | (if no colon has been seen). These are different from data | |
1544 | statements in that initializers are only allowed to apply to the | |
1545 | variable immediately preceding, i.e. | |
1546 | integer i, j /1, 2/ | |
1547 | is not allowed. Therefore we have to do some work manually, that | |
75d17889 | 1548 | could otherwise be left to the matchers for DATA statements. */ |
294fbfc8 TS |
1549 | |
1550 | if (!colon_seen && gfc_match (" /") == MATCH_YES) | |
1551 | { | |
1552 | if (gfc_notify_std (GFC_STD_GNU, "Extension: Old-style " | |
1553 | "initialization at %C") == FAILURE) | |
1554 | return MATCH_ERROR; | |
d51347f9 | 1555 | |
294fbfc8 TS |
1556 | return match_old_style_init (name); |
1557 | } | |
1558 | ||
6de9cd9a DN |
1559 | /* The double colon must be present in order to have initializers. |
1560 | Otherwise the statement is ambiguous with an assignment statement. */ | |
1561 | if (colon_seen) | |
1562 | { | |
1563 | if (gfc_match (" =>") == MATCH_YES) | |
1564 | { | |
6de9cd9a DN |
1565 | if (!current_attr.pointer) |
1566 | { | |
1567 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
1568 | m = MATCH_ERROR; | |
1569 | goto cleanup; | |
1570 | } | |
1571 | ||
1572 | m = gfc_match_null (&initializer); | |
1573 | if (m == MATCH_NO) | |
1574 | { | |
def66134 | 1575 | gfc_error ("Pointer initialization requires a NULL() at %C"); |
6de9cd9a DN |
1576 | m = MATCH_ERROR; |
1577 | } | |
1578 | ||
1579 | if (gfc_pure (NULL)) | |
1580 | { | |
636dff67 SK |
1581 | gfc_error ("Initialization of pointer at %C is not allowed in " |
1582 | "a PURE procedure"); | |
6de9cd9a DN |
1583 | m = MATCH_ERROR; |
1584 | } | |
1585 | ||
1586 | if (m != MATCH_YES) | |
1587 | goto cleanup; | |
1588 | ||
6de9cd9a DN |
1589 | } |
1590 | else if (gfc_match_char ('=') == MATCH_YES) | |
1591 | { | |
1592 | if (current_attr.pointer) | |
1593 | { | |
636dff67 SK |
1594 | gfc_error ("Pointer initialization at %C requires '=>', " |
1595 | "not '='"); | |
6de9cd9a DN |
1596 | m = MATCH_ERROR; |
1597 | goto cleanup; | |
1598 | } | |
1599 | ||
1600 | m = gfc_match_init_expr (&initializer); | |
1601 | if (m == MATCH_NO) | |
1602 | { | |
1603 | gfc_error ("Expected an initialization expression at %C"); | |
1604 | m = MATCH_ERROR; | |
1605 | } | |
1606 | ||
1607 | if (current_attr.flavor != FL_PARAMETER && gfc_pure (NULL)) | |
1608 | { | |
636dff67 SK |
1609 | gfc_error ("Initialization of variable at %C is not allowed in " |
1610 | "a PURE procedure"); | |
6de9cd9a DN |
1611 | m = MATCH_ERROR; |
1612 | } | |
1613 | ||
1614 | if (m != MATCH_YES) | |
1615 | goto cleanup; | |
1616 | } | |
cb44ab82 VL |
1617 | } |
1618 | ||
5046aff5 PT |
1619 | if (initializer != NULL && current_attr.allocatable |
1620 | && gfc_current_state () == COMP_DERIVED) | |
1621 | { | |
636dff67 SK |
1622 | gfc_error ("Initialization of allocatable component at %C is not " |
1623 | "allowed"); | |
5046aff5 PT |
1624 | m = MATCH_ERROR; |
1625 | goto cleanup; | |
1626 | } | |
1627 | ||
54b4ba60 | 1628 | /* Add the initializer. Note that it is fine if initializer is |
6de9cd9a DN |
1629 | NULL here, because we sometimes also need to check if a |
1630 | declaration *must* have an initialization expression. */ | |
1631 | if (gfc_current_state () != COMP_DERIVED) | |
1632 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
1633 | else | |
54b4ba60 | 1634 | { |
5046aff5 | 1635 | if (current_ts.type == BT_DERIVED |
636dff67 | 1636 | && !current_attr.pointer && !initializer) |
54b4ba60 PB |
1637 | initializer = gfc_default_initializer (¤t_ts); |
1638 | t = build_struct (name, cl, &initializer, &as); | |
1639 | } | |
6de9cd9a DN |
1640 | |
1641 | m = (t == SUCCESS) ? MATCH_YES : MATCH_ERROR; | |
1642 | ||
1643 | cleanup: | |
1644 | /* Free stuff up and return. */ | |
1645 | gfc_free_expr (initializer); | |
1646 | gfc_free_array_spec (as); | |
1647 | ||
1648 | return m; | |
1649 | } | |
1650 | ||
1651 | ||
b2b81a3f BM |
1652 | /* Match an extended-f77 "TYPESPEC*bytesize"-style kind specification. |
1653 | This assumes that the byte size is equal to the kind number for | |
1654 | non-COMPLEX types, and equal to twice the kind number for COMPLEX. */ | |
6de9cd9a DN |
1655 | |
1656 | match | |
636dff67 | 1657 | gfc_match_old_kind_spec (gfc_typespec *ts) |
6de9cd9a DN |
1658 | { |
1659 | match m; | |
5cf54585 | 1660 | int original_kind; |
6de9cd9a DN |
1661 | |
1662 | if (gfc_match_char ('*') != MATCH_YES) | |
1663 | return MATCH_NO; | |
1664 | ||
5cf54585 | 1665 | m = gfc_match_small_literal_int (&ts->kind, NULL); |
6de9cd9a DN |
1666 | if (m != MATCH_YES) |
1667 | return MATCH_ERROR; | |
1668 | ||
e45b3c75 ES |
1669 | original_kind = ts->kind; |
1670 | ||
6de9cd9a | 1671 | /* Massage the kind numbers for complex types. */ |
e45b3c75 ES |
1672 | if (ts->type == BT_COMPLEX) |
1673 | { | |
1674 | if (ts->kind % 2) | |
636dff67 SK |
1675 | { |
1676 | gfc_error ("Old-style type declaration %s*%d not supported at %C", | |
1677 | gfc_basic_typename (ts->type), original_kind); | |
1678 | return MATCH_ERROR; | |
1679 | } | |
e45b3c75 ES |
1680 | ts->kind /= 2; |
1681 | } | |
6de9cd9a | 1682 | |
e7a2d5fb | 1683 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a | 1684 | { |
e45b3c75 | 1685 | gfc_error ("Old-style type declaration %s*%d not supported at %C", |
636dff67 | 1686 | gfc_basic_typename (ts->type), original_kind); |
6de9cd9a DN |
1687 | return MATCH_ERROR; |
1688 | } | |
1689 | ||
df8652dc SK |
1690 | if (gfc_notify_std (GFC_STD_GNU, "Nonstandard type declaration %s*%d at %C", |
1691 | gfc_basic_typename (ts->type), original_kind) == FAILURE) | |
1692 | return MATCH_ERROR; | |
1693 | ||
6de9cd9a DN |
1694 | return MATCH_YES; |
1695 | } | |
1696 | ||
1697 | ||
1698 | /* Match a kind specification. Since kinds are generally optional, we | |
1699 | usually return MATCH_NO if something goes wrong. If a "kind=" | |
1700 | string is found, then we know we have an error. */ | |
1701 | ||
1702 | match | |
636dff67 | 1703 | gfc_match_kind_spec (gfc_typespec *ts) |
6de9cd9a DN |
1704 | { |
1705 | locus where; | |
1706 | gfc_expr *e; | |
1707 | match m, n; | |
1708 | const char *msg; | |
1709 | ||
1710 | m = MATCH_NO; | |
1711 | e = NULL; | |
1712 | ||
63645982 | 1713 | where = gfc_current_locus; |
6de9cd9a DN |
1714 | |
1715 | if (gfc_match_char ('(') == MATCH_NO) | |
1716 | return MATCH_NO; | |
1717 | ||
1718 | /* Also gobbles optional text. */ | |
1719 | if (gfc_match (" kind = ") == MATCH_YES) | |
1720 | m = MATCH_ERROR; | |
1721 | ||
1722 | n = gfc_match_init_expr (&e); | |
1723 | if (n == MATCH_NO) | |
1724 | gfc_error ("Expected initialization expression at %C"); | |
1725 | if (n != MATCH_YES) | |
1726 | return MATCH_ERROR; | |
1727 | ||
1728 | if (e->rank != 0) | |
1729 | { | |
1730 | gfc_error ("Expected scalar initialization expression at %C"); | |
1731 | m = MATCH_ERROR; | |
1732 | goto no_match; | |
1733 | } | |
1734 | ||
1735 | msg = gfc_extract_int (e, &ts->kind); | |
1736 | if (msg != NULL) | |
1737 | { | |
1738 | gfc_error (msg); | |
1739 | m = MATCH_ERROR; | |
1740 | goto no_match; | |
1741 | } | |
1742 | ||
a8b3b0b6 CR |
1743 | /* Before throwing away the expression, let's see if we had a |
1744 | C interoperable kind (and store the fact). */ | |
1745 | if (e->ts.is_c_interop == 1) | |
1746 | { | |
1747 | /* Mark this as c interoperable if being declared with one | |
1748 | of the named constants from iso_c_binding. */ | |
1749 | ts->is_c_interop = e->ts.is_iso_c; | |
1750 | ts->f90_type = e->ts.f90_type; | |
1751 | } | |
1752 | ||
6de9cd9a DN |
1753 | gfc_free_expr (e); |
1754 | e = NULL; | |
1755 | ||
a8b3b0b6 CR |
1756 | /* Ignore errors to this point, if we've gotten here. This means |
1757 | we ignore the m=MATCH_ERROR from above. */ | |
e7a2d5fb | 1758 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a DN |
1759 | { |
1760 | gfc_error ("Kind %d not supported for type %s at %C", ts->kind, | |
1761 | gfc_basic_typename (ts->type)); | |
6de9cd9a | 1762 | m = MATCH_ERROR; |
6de9cd9a | 1763 | } |
a8b3b0b6 | 1764 | else if (gfc_match_char (')') != MATCH_YES) |
6de9cd9a | 1765 | { |
8998be20 | 1766 | gfc_error ("Missing right parenthesis at %C"); |
a8b3b0b6 | 1767 | m = MATCH_ERROR; |
6de9cd9a | 1768 | } |
a8b3b0b6 CR |
1769 | else |
1770 | /* All tests passed. */ | |
1771 | m = MATCH_YES; | |
6de9cd9a | 1772 | |
a8b3b0b6 CR |
1773 | if(m == MATCH_ERROR) |
1774 | gfc_current_locus = where; | |
1775 | ||
1776 | /* Return what we know from the test(s). */ | |
1777 | return m; | |
6de9cd9a DN |
1778 | |
1779 | no_match: | |
1780 | gfc_free_expr (e); | |
63645982 | 1781 | gfc_current_locus = where; |
6de9cd9a DN |
1782 | return m; |
1783 | } | |
1784 | ||
1785 | ||
1786 | /* Match the various kind/length specifications in a CHARACTER | |
1787 | declaration. We don't return MATCH_NO. */ | |
1788 | ||
1789 | static match | |
636dff67 | 1790 | match_char_spec (gfc_typespec *ts) |
6de9cd9a | 1791 | { |
5cd09fac | 1792 | int kind, seen_length; |
6de9cd9a DN |
1793 | gfc_charlen *cl; |
1794 | gfc_expr *len; | |
1795 | match m; | |
a8b3b0b6 | 1796 | gfc_expr *kind_expr = NULL; |
9d64df18 | 1797 | kind = gfc_default_character_kind; |
6de9cd9a DN |
1798 | len = NULL; |
1799 | seen_length = 0; | |
1800 | ||
1801 | /* Try the old-style specification first. */ | |
1802 | old_char_selector = 0; | |
1803 | ||
1804 | m = match_char_length (&len); | |
1805 | if (m != MATCH_NO) | |
1806 | { | |
1807 | if (m == MATCH_YES) | |
1808 | old_char_selector = 1; | |
1809 | seen_length = 1; | |
1810 | goto done; | |
1811 | } | |
1812 | ||
1813 | m = gfc_match_char ('('); | |
1814 | if (m != MATCH_YES) | |
1815 | { | |
a8b3b0b6 | 1816 | m = MATCH_YES; /* Character without length is a single char. */ |
6de9cd9a DN |
1817 | goto done; |
1818 | } | |
1819 | ||
a8b3b0b6 | 1820 | /* Try the weird case: ( KIND = <int> [ , LEN = <len-param> ] ). */ |
6de9cd9a DN |
1821 | if (gfc_match (" kind =") == MATCH_YES) |
1822 | { | |
a8b3b0b6 CR |
1823 | m = gfc_match_small_int_expr(&kind, &kind_expr); |
1824 | ||
6de9cd9a DN |
1825 | if (m == MATCH_ERROR) |
1826 | goto done; | |
1827 | if (m == MATCH_NO) | |
1828 | goto syntax; | |
1829 | ||
1830 | if (gfc_match (" , len =") == MATCH_NO) | |
1831 | goto rparen; | |
1832 | ||
1833 | m = char_len_param_value (&len); | |
1834 | if (m == MATCH_NO) | |
1835 | goto syntax; | |
1836 | if (m == MATCH_ERROR) | |
1837 | goto done; | |
1838 | seen_length = 1; | |
1839 | ||
1840 | goto rparen; | |
1841 | } | |
1842 | ||
66e4ab31 | 1843 | /* Try to match "LEN = <len-param>" or "LEN = <len-param>, KIND = <int>". */ |
6de9cd9a DN |
1844 | if (gfc_match (" len =") == MATCH_YES) |
1845 | { | |
1846 | m = char_len_param_value (&len); | |
1847 | if (m == MATCH_NO) | |
1848 | goto syntax; | |
1849 | if (m == MATCH_ERROR) | |
1850 | goto done; | |
1851 | seen_length = 1; | |
1852 | ||
1853 | if (gfc_match_char (')') == MATCH_YES) | |
1854 | goto done; | |
1855 | ||
1856 | if (gfc_match (" , kind =") != MATCH_YES) | |
1857 | goto syntax; | |
1858 | ||
a8b3b0b6 | 1859 | gfc_match_small_int_expr(&kind, &kind_expr); |
6de9cd9a | 1860 | |
e7a2d5fb | 1861 | if (gfc_validate_kind (BT_CHARACTER, kind, true) < 0) |
6de9cd9a DN |
1862 | { |
1863 | gfc_error ("Kind %d is not a CHARACTER kind at %C", kind); | |
1864 | return MATCH_YES; | |
1865 | } | |
1866 | ||
1867 | goto rparen; | |
1868 | } | |
1869 | ||
66e4ab31 | 1870 | /* Try to match ( <len-param> ) or ( <len-param> , [ KIND = ] <int> ). */ |
6de9cd9a DN |
1871 | m = char_len_param_value (&len); |
1872 | if (m == MATCH_NO) | |
1873 | goto syntax; | |
1874 | if (m == MATCH_ERROR) | |
1875 | goto done; | |
1876 | seen_length = 1; | |
1877 | ||
1878 | m = gfc_match_char (')'); | |
1879 | if (m == MATCH_YES) | |
1880 | goto done; | |
1881 | ||
1882 | if (gfc_match_char (',') != MATCH_YES) | |
1883 | goto syntax; | |
1884 | ||
a8b3b0b6 | 1885 | gfc_match (" kind ="); /* Gobble optional text. */ |
6de9cd9a | 1886 | |
a8b3b0b6 | 1887 | m = gfc_match_small_int_expr(&kind, &kind_expr); |
6de9cd9a DN |
1888 | if (m == MATCH_ERROR) |
1889 | goto done; | |
1890 | if (m == MATCH_NO) | |
1891 | goto syntax; | |
1892 | ||
1893 | rparen: | |
1894 | /* Require a right-paren at this point. */ | |
1895 | m = gfc_match_char (')'); | |
1896 | if (m == MATCH_YES) | |
1897 | goto done; | |
1898 | ||
1899 | syntax: | |
1900 | gfc_error ("Syntax error in CHARACTER declaration at %C"); | |
1901 | m = MATCH_ERROR; | |
16f8ffc8 JD |
1902 | gfc_free_expr (len); |
1903 | return m; | |
6de9cd9a DN |
1904 | |
1905 | done: | |
16f8ffc8 | 1906 | if (gfc_validate_kind (BT_CHARACTER, kind, true) < 0) |
6de9cd9a DN |
1907 | { |
1908 | gfc_error ("Kind %d is not a CHARACTER kind at %C", kind); | |
1909 | m = MATCH_ERROR; | |
1910 | } | |
1911 | ||
16f8ffc8 JD |
1912 | if (seen_length == 1 && len != NULL |
1913 | && len->ts.type != BT_INTEGER && len->ts.type != BT_UNKNOWN) | |
1914 | { | |
1915 | gfc_error ("Expression at %C must be of INTEGER type"); | |
1916 | m = MATCH_ERROR; | |
1917 | } | |
1918 | ||
6de9cd9a DN |
1919 | if (m != MATCH_YES) |
1920 | { | |
1921 | gfc_free_expr (len); | |
a8b3b0b6 | 1922 | gfc_free_expr (kind_expr); |
6de9cd9a DN |
1923 | return m; |
1924 | } | |
1925 | ||
1926 | /* Do some final massaging of the length values. */ | |
1927 | cl = gfc_get_charlen (); | |
1928 | cl->next = gfc_current_ns->cl_list; | |
1929 | gfc_current_ns->cl_list = cl; | |
1930 | ||
1931 | if (seen_length == 0) | |
1932 | cl->length = gfc_int_expr (1); | |
1933 | else | |
5cd09fac | 1934 | cl->length = len; |
6de9cd9a DN |
1935 | |
1936 | ts->cl = cl; | |
1937 | ts->kind = kind; | |
1938 | ||
a8b3b0b6 CR |
1939 | /* We have to know if it was a c interoperable kind so we can |
1940 | do accurate type checking of bind(c) procs, etc. */ | |
1941 | if (kind_expr != NULL) | |
1942 | { | |
1943 | /* Mark this as c interoperable if being declared with one | |
1944 | of the named constants from iso_c_binding. */ | |
1945 | ts->is_c_interop = kind_expr->ts.is_iso_c; | |
1946 | gfc_free_expr (kind_expr); | |
1947 | } | |
1948 | else if (len != NULL) | |
1949 | { | |
1950 | /* Here, we might have parsed something such as: | |
1951 | character(c_char) | |
1952 | In this case, the parsing code above grabs the c_char when | |
1953 | looking for the length (line 1690, roughly). it's the last | |
1954 | testcase for parsing the kind params of a character variable. | |
1955 | However, it's not actually the length. this seems like it | |
1956 | could be an error. | |
1957 | To see if the user used a C interop kind, test the expr | |
1958 | of the so called length, and see if it's C interoperable. */ | |
1959 | ts->is_c_interop = len->ts.is_iso_c; | |
1960 | } | |
1961 | ||
6de9cd9a DN |
1962 | return MATCH_YES; |
1963 | } | |
1964 | ||
1965 | ||
1966 | /* Matches a type specification. If successful, sets the ts structure | |
1967 | to the matched specification. This is necessary for FUNCTION and | |
1968 | IMPLICIT statements. | |
1969 | ||
d51347f9 | 1970 | If implicit_flag is nonzero, then we don't check for the optional |
e5ddaa24 | 1971 | kind specification. Not doing so is needed for matching an IMPLICIT |
6de9cd9a DN |
1972 | statement correctly. */ |
1973 | ||
e5ddaa24 | 1974 | static match |
636dff67 | 1975 | match_type_spec (gfc_typespec *ts, int implicit_flag) |
6de9cd9a DN |
1976 | { |
1977 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
1978 | gfc_symbol *sym; | |
1979 | match m; | |
0ff0dfbf | 1980 | int c; |
6de9cd9a DN |
1981 | |
1982 | gfc_clear_ts (ts); | |
1983 | ||
a8b3b0b6 CR |
1984 | /* Clear the current binding label, in case one is given. */ |
1985 | curr_binding_label[0] = '\0'; | |
1986 | ||
5f700e6d AL |
1987 | if (gfc_match (" byte") == MATCH_YES) |
1988 | { | |
d51347f9 | 1989 | if (gfc_notify_std(GFC_STD_GNU, "Extension: BYTE type at %C") |
5f700e6d AL |
1990 | == FAILURE) |
1991 | return MATCH_ERROR; | |
1992 | ||
1993 | if (gfc_validate_kind (BT_INTEGER, 1, true) < 0) | |
1994 | { | |
1995 | gfc_error ("BYTE type used at %C " | |
1996 | "is not available on the target machine"); | |
1997 | return MATCH_ERROR; | |
1998 | } | |
d51347f9 | 1999 | |
5f700e6d AL |
2000 | ts->type = BT_INTEGER; |
2001 | ts->kind = 1; | |
2002 | return MATCH_YES; | |
2003 | } | |
2004 | ||
6de9cd9a DN |
2005 | if (gfc_match (" integer") == MATCH_YES) |
2006 | { | |
2007 | ts->type = BT_INTEGER; | |
9d64df18 | 2008 | ts->kind = gfc_default_integer_kind; |
6de9cd9a DN |
2009 | goto get_kind; |
2010 | } | |
2011 | ||
2012 | if (gfc_match (" character") == MATCH_YES) | |
2013 | { | |
2014 | ts->type = BT_CHARACTER; | |
e5ddaa24 TS |
2015 | if (implicit_flag == 0) |
2016 | return match_char_spec (ts); | |
2017 | else | |
2018 | return MATCH_YES; | |
6de9cd9a DN |
2019 | } |
2020 | ||
2021 | if (gfc_match (" real") == MATCH_YES) | |
2022 | { | |
2023 | ts->type = BT_REAL; | |
9d64df18 | 2024 | ts->kind = gfc_default_real_kind; |
6de9cd9a DN |
2025 | goto get_kind; |
2026 | } | |
2027 | ||
2028 | if (gfc_match (" double precision") == MATCH_YES) | |
2029 | { | |
2030 | ts->type = BT_REAL; | |
9d64df18 | 2031 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
2032 | return MATCH_YES; |
2033 | } | |
2034 | ||
2035 | if (gfc_match (" complex") == MATCH_YES) | |
2036 | { | |
2037 | ts->type = BT_COMPLEX; | |
9d64df18 | 2038 | ts->kind = gfc_default_complex_kind; |
6de9cd9a DN |
2039 | goto get_kind; |
2040 | } | |
2041 | ||
2042 | if (gfc_match (" double complex") == MATCH_YES) | |
2043 | { | |
df8652dc SK |
2044 | if (gfc_notify_std (GFC_STD_GNU, "DOUBLE COMPLEX at %C does not " |
2045 | "conform to the Fortran 95 standard") == FAILURE) | |
2046 | return MATCH_ERROR; | |
2047 | ||
6de9cd9a | 2048 | ts->type = BT_COMPLEX; |
9d64df18 | 2049 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
2050 | return MATCH_YES; |
2051 | } | |
2052 | ||
2053 | if (gfc_match (" logical") == MATCH_YES) | |
2054 | { | |
2055 | ts->type = BT_LOGICAL; | |
9d64df18 | 2056 | ts->kind = gfc_default_logical_kind; |
6de9cd9a DN |
2057 | goto get_kind; |
2058 | } | |
2059 | ||
2060 | m = gfc_match (" type ( %n )", name); | |
2061 | if (m != MATCH_YES) | |
2062 | return m; | |
2063 | ||
2064 | /* Search for the name but allow the components to be defined later. */ | |
2065 | if (gfc_get_ha_symbol (name, &sym)) | |
2066 | { | |
2067 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
2068 | return MATCH_ERROR; | |
2069 | } | |
2070 | ||
2071 | if (sym->attr.flavor != FL_DERIVED | |
231b2fcc | 2072 | && gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL) == FAILURE) |
6de9cd9a DN |
2073 | return MATCH_ERROR; |
2074 | ||
2075 | ts->type = BT_DERIVED; | |
2076 | ts->kind = 0; | |
2077 | ts->derived = sym; | |
2078 | ||
2079 | return MATCH_YES; | |
2080 | ||
2081 | get_kind: | |
2082 | /* For all types except double, derived and character, look for an | |
2083 | optional kind specifier. MATCH_NO is actually OK at this point. */ | |
e5ddaa24 | 2084 | if (implicit_flag == 1) |
6de9cd9a DN |
2085 | return MATCH_YES; |
2086 | ||
0ff0dfbf TS |
2087 | if (gfc_current_form == FORM_FREE) |
2088 | { | |
2089 | c = gfc_peek_char(); | |
2090 | if (!gfc_is_whitespace(c) && c != '*' && c != '(' | |
636dff67 | 2091 | && c != ':' && c != ',') |
0ff0dfbf TS |
2092 | return MATCH_NO; |
2093 | } | |
2094 | ||
6de9cd9a DN |
2095 | m = gfc_match_kind_spec (ts); |
2096 | if (m == MATCH_NO && ts->type != BT_CHARACTER) | |
2097 | m = gfc_match_old_kind_spec (ts); | |
2098 | ||
2099 | if (m == MATCH_NO) | |
2100 | m = MATCH_YES; /* No kind specifier found. */ | |
2101 | ||
2102 | return m; | |
2103 | } | |
2104 | ||
2105 | ||
e5ddaa24 TS |
2106 | /* Match an IMPLICIT NONE statement. Actually, this statement is |
2107 | already matched in parse.c, or we would not end up here in the | |
2108 | first place. So the only thing we need to check, is if there is | |
2109 | trailing garbage. If not, the match is successful. */ | |
2110 | ||
2111 | match | |
2112 | gfc_match_implicit_none (void) | |
2113 | { | |
e5ddaa24 TS |
2114 | return (gfc_match_eos () == MATCH_YES) ? MATCH_YES : MATCH_NO; |
2115 | } | |
2116 | ||
2117 | ||
2118 | /* Match the letter range(s) of an IMPLICIT statement. */ | |
2119 | ||
2120 | static match | |
1107b970 | 2121 | match_implicit_range (void) |
e5ddaa24 TS |
2122 | { |
2123 | int c, c1, c2, inner; | |
2124 | locus cur_loc; | |
2125 | ||
2126 | cur_loc = gfc_current_locus; | |
2127 | ||
2128 | gfc_gobble_whitespace (); | |
2129 | c = gfc_next_char (); | |
2130 | if (c != '(') | |
2131 | { | |
2132 | gfc_error ("Missing character range in IMPLICIT at %C"); | |
2133 | goto bad; | |
2134 | } | |
2135 | ||
2136 | inner = 1; | |
2137 | while (inner) | |
2138 | { | |
2139 | gfc_gobble_whitespace (); | |
2140 | c1 = gfc_next_char (); | |
2141 | if (!ISALPHA (c1)) | |
2142 | goto bad; | |
2143 | ||
2144 | gfc_gobble_whitespace (); | |
2145 | c = gfc_next_char (); | |
2146 | ||
2147 | switch (c) | |
2148 | { | |
2149 | case ')': | |
66e4ab31 | 2150 | inner = 0; /* Fall through. */ |
e5ddaa24 TS |
2151 | |
2152 | case ',': | |
2153 | c2 = c1; | |
2154 | break; | |
2155 | ||
2156 | case '-': | |
2157 | gfc_gobble_whitespace (); | |
2158 | c2 = gfc_next_char (); | |
2159 | if (!ISALPHA (c2)) | |
2160 | goto bad; | |
2161 | ||
2162 | gfc_gobble_whitespace (); | |
2163 | c = gfc_next_char (); | |
2164 | ||
2165 | if ((c != ',') && (c != ')')) | |
2166 | goto bad; | |
2167 | if (c == ')') | |
2168 | inner = 0; | |
2169 | ||
2170 | break; | |
2171 | ||
2172 | default: | |
2173 | goto bad; | |
2174 | } | |
2175 | ||
2176 | if (c1 > c2) | |
2177 | { | |
2178 | gfc_error ("Letters must be in alphabetic order in " | |
2179 | "IMPLICIT statement at %C"); | |
2180 | goto bad; | |
2181 | } | |
2182 | ||
2183 | /* See if we can add the newly matched range to the pending | |
636dff67 SK |
2184 | implicits from this IMPLICIT statement. We do not check for |
2185 | conflicts with whatever earlier IMPLICIT statements may have | |
2186 | set. This is done when we've successfully finished matching | |
2187 | the current one. */ | |
1107b970 | 2188 | if (gfc_add_new_implicit_range (c1, c2) != SUCCESS) |
e5ddaa24 TS |
2189 | goto bad; |
2190 | } | |
2191 | ||
2192 | return MATCH_YES; | |
2193 | ||
2194 | bad: | |
2195 | gfc_syntax_error (ST_IMPLICIT); | |
2196 | ||
2197 | gfc_current_locus = cur_loc; | |
2198 | return MATCH_ERROR; | |
2199 | } | |
2200 | ||
2201 | ||
2202 | /* Match an IMPLICIT statement, storing the types for | |
2203 | gfc_set_implicit() if the statement is accepted by the parser. | |
2204 | There is a strange looking, but legal syntactic construction | |
2205 | possible. It looks like: | |
2206 | ||
2207 | IMPLICIT INTEGER (a-b) (c-d) | |
2208 | ||
2209 | This is legal if "a-b" is a constant expression that happens to | |
2210 | equal one of the legal kinds for integers. The real problem | |
2211 | happens with an implicit specification that looks like: | |
2212 | ||
2213 | IMPLICIT INTEGER (a-b) | |
2214 | ||
2215 | In this case, a typespec matcher that is "greedy" (as most of the | |
2216 | matchers are) gobbles the character range as a kindspec, leaving | |
2217 | nothing left. We therefore have to go a bit more slowly in the | |
2218 | matching process by inhibiting the kindspec checking during | |
2219 | typespec matching and checking for a kind later. */ | |
2220 | ||
2221 | match | |
2222 | gfc_match_implicit (void) | |
2223 | { | |
2224 | gfc_typespec ts; | |
2225 | locus cur_loc; | |
2226 | int c; | |
2227 | match m; | |
2228 | ||
2229 | /* We don't allow empty implicit statements. */ | |
2230 | if (gfc_match_eos () == MATCH_YES) | |
2231 | { | |
2232 | gfc_error ("Empty IMPLICIT statement at %C"); | |
2233 | return MATCH_ERROR; | |
2234 | } | |
2235 | ||
e5ddaa24 TS |
2236 | do |
2237 | { | |
1107b970 PB |
2238 | /* First cleanup. */ |
2239 | gfc_clear_new_implicit (); | |
2240 | ||
e5ddaa24 TS |
2241 | /* A basic type is mandatory here. */ |
2242 | m = match_type_spec (&ts, 1); | |
2243 | if (m == MATCH_ERROR) | |
2244 | goto error; | |
2245 | if (m == MATCH_NO) | |
2246 | goto syntax; | |
2247 | ||
2248 | cur_loc = gfc_current_locus; | |
1107b970 | 2249 | m = match_implicit_range (); |
e5ddaa24 TS |
2250 | |
2251 | if (m == MATCH_YES) | |
2252 | { | |
1107b970 | 2253 | /* We may have <TYPE> (<RANGE>). */ |
e5ddaa24 TS |
2254 | gfc_gobble_whitespace (); |
2255 | c = gfc_next_char (); | |
2256 | if ((c == '\n') || (c == ',')) | |
1107b970 PB |
2257 | { |
2258 | /* Check for CHARACTER with no length parameter. */ | |
2259 | if (ts.type == BT_CHARACTER && !ts.cl) | |
2260 | { | |
9d64df18 | 2261 | ts.kind = gfc_default_character_kind; |
1107b970 PB |
2262 | ts.cl = gfc_get_charlen (); |
2263 | ts.cl->next = gfc_current_ns->cl_list; | |
2264 | gfc_current_ns->cl_list = ts.cl; | |
2265 | ts.cl->length = gfc_int_expr (1); | |
2266 | } | |
2267 | ||
2268 | /* Record the Successful match. */ | |
2269 | if (gfc_merge_new_implicit (&ts) != SUCCESS) | |
2270 | return MATCH_ERROR; | |
2271 | continue; | |
2272 | } | |
e5ddaa24 TS |
2273 | |
2274 | gfc_current_locus = cur_loc; | |
2275 | } | |
2276 | ||
1107b970 PB |
2277 | /* Discard the (incorrectly) matched range. */ |
2278 | gfc_clear_new_implicit (); | |
2279 | ||
2280 | /* Last chance -- check <TYPE> <SELECTOR> (<RANGE>). */ | |
2281 | if (ts.type == BT_CHARACTER) | |
2282 | m = match_char_spec (&ts); | |
2283 | else | |
e5ddaa24 | 2284 | { |
1107b970 | 2285 | m = gfc_match_kind_spec (&ts); |
e5ddaa24 | 2286 | if (m == MATCH_NO) |
1107b970 PB |
2287 | { |
2288 | m = gfc_match_old_kind_spec (&ts); | |
2289 | if (m == MATCH_ERROR) | |
2290 | goto error; | |
2291 | if (m == MATCH_NO) | |
2292 | goto syntax; | |
2293 | } | |
e5ddaa24 | 2294 | } |
1107b970 PB |
2295 | if (m == MATCH_ERROR) |
2296 | goto error; | |
e5ddaa24 | 2297 | |
1107b970 | 2298 | m = match_implicit_range (); |
e5ddaa24 TS |
2299 | if (m == MATCH_ERROR) |
2300 | goto error; | |
2301 | if (m == MATCH_NO) | |
2302 | goto syntax; | |
2303 | ||
2304 | gfc_gobble_whitespace (); | |
2305 | c = gfc_next_char (); | |
2306 | if ((c != '\n') && (c != ',')) | |
2307 | goto syntax; | |
2308 | ||
1107b970 PB |
2309 | if (gfc_merge_new_implicit (&ts) != SUCCESS) |
2310 | return MATCH_ERROR; | |
e5ddaa24 TS |
2311 | } |
2312 | while (c == ','); | |
2313 | ||
1107b970 | 2314 | return MATCH_YES; |
e5ddaa24 TS |
2315 | |
2316 | syntax: | |
2317 | gfc_syntax_error (ST_IMPLICIT); | |
2318 | ||
2319 | error: | |
2320 | return MATCH_ERROR; | |
2321 | } | |
2322 | ||
66e4ab31 | 2323 | |
8998be20 TB |
2324 | match |
2325 | gfc_match_import (void) | |
2326 | { | |
2327 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
2328 | match m; | |
2329 | gfc_symbol *sym; | |
2330 | gfc_symtree *st; | |
2331 | ||
66e4ab31 SK |
2332 | if (gfc_current_ns->proc_name == NULL |
2333 | || gfc_current_ns->proc_name->attr.if_source != IFSRC_IFBODY) | |
8998be20 TB |
2334 | { |
2335 | gfc_error ("IMPORT statement at %C only permitted in " | |
2336 | "an INTERFACE body"); | |
2337 | return MATCH_ERROR; | |
2338 | } | |
2339 | ||
636dff67 | 2340 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: IMPORT statement at %C") |
8998be20 TB |
2341 | == FAILURE) |
2342 | return MATCH_ERROR; | |
2343 | ||
2344 | if (gfc_match_eos () == MATCH_YES) | |
2345 | { | |
2346 | /* All host variables should be imported. */ | |
2347 | gfc_current_ns->has_import_set = 1; | |
2348 | return MATCH_YES; | |
2349 | } | |
2350 | ||
2351 | if (gfc_match (" ::") == MATCH_YES) | |
2352 | { | |
2353 | if (gfc_match_eos () == MATCH_YES) | |
636dff67 SK |
2354 | { |
2355 | gfc_error ("Expecting list of named entities at %C"); | |
2356 | return MATCH_ERROR; | |
2357 | } | |
8998be20 TB |
2358 | } |
2359 | ||
2360 | for(;;) | |
2361 | { | |
2362 | m = gfc_match (" %n", name); | |
2363 | switch (m) | |
2364 | { | |
2365 | case MATCH_YES: | |
36d3fb4c | 2366 | if (gfc_current_ns->parent != NULL |
66e4ab31 | 2367 | && gfc_find_symbol (name, gfc_current_ns->parent, 1, &sym)) |
36d3fb4c PT |
2368 | { |
2369 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
2370 | return MATCH_ERROR; | |
2371 | } | |
2372 | else if (gfc_current_ns->proc_name->ns->parent != NULL | |
66e4ab31 SK |
2373 | && gfc_find_symbol (name, |
2374 | gfc_current_ns->proc_name->ns->parent, | |
2375 | 1, &sym)) | |
636dff67 SK |
2376 | { |
2377 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
2378 | return MATCH_ERROR; | |
2379 | } | |
2380 | ||
2381 | if (sym == NULL) | |
2382 | { | |
2383 | gfc_error ("Cannot IMPORT '%s' from host scoping unit " | |
2384 | "at %C - does not exist.", name); | |
2385 | return MATCH_ERROR; | |
2386 | } | |
2387 | ||
d51347f9 | 2388 | if (gfc_find_symtree (gfc_current_ns->sym_root,name)) |
636dff67 SK |
2389 | { |
2390 | gfc_warning ("'%s' is already IMPORTed from host scoping unit " | |
2391 | "at %C.", name); | |
2392 | goto next_item; | |
2393 | } | |
2394 | ||
2395 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); | |
2396 | st->n.sym = sym; | |
2397 | sym->refs++; | |
2398 | sym->ns = gfc_current_ns; | |
8998be20 TB |
2399 | |
2400 | goto next_item; | |
2401 | ||
2402 | case MATCH_NO: | |
2403 | break; | |
2404 | ||
2405 | case MATCH_ERROR: | |
2406 | return MATCH_ERROR; | |
2407 | } | |
2408 | ||
2409 | next_item: | |
2410 | if (gfc_match_eos () == MATCH_YES) | |
2411 | break; | |
2412 | if (gfc_match_char (',') != MATCH_YES) | |
2413 | goto syntax; | |
2414 | } | |
2415 | ||
2416 | return MATCH_YES; | |
2417 | ||
2418 | syntax: | |
2419 | gfc_error ("Syntax error in IMPORT statement at %C"); | |
2420 | return MATCH_ERROR; | |
2421 | } | |
e5ddaa24 | 2422 | |
66e4ab31 | 2423 | |
6de9cd9a DN |
2424 | /* Matches an attribute specification including array specs. If |
2425 | successful, leaves the variables current_attr and current_as | |
2426 | holding the specification. Also sets the colon_seen variable for | |
2427 | later use by matchers associated with initializations. | |
2428 | ||
2429 | This subroutine is a little tricky in the sense that we don't know | |
2430 | if we really have an attr-spec until we hit the double colon. | |
2431 | Until that time, we can only return MATCH_NO. This forces us to | |
2432 | check for duplicate specification at this level. */ | |
2433 | ||
2434 | static match | |
2435 | match_attr_spec (void) | |
2436 | { | |
6de9cd9a DN |
2437 | /* Modifiers that can exist in a type statement. */ |
2438 | typedef enum | |
2439 | { GFC_DECL_BEGIN = 0, | |
2440 | DECL_ALLOCATABLE = GFC_DECL_BEGIN, DECL_DIMENSION, DECL_EXTERNAL, | |
2441 | DECL_IN, DECL_OUT, DECL_INOUT, DECL_INTRINSIC, DECL_OPTIONAL, | |
ee7e677f TB |
2442 | DECL_PARAMETER, DECL_POINTER, DECL_PROTECTED, DECL_PRIVATE, |
2443 | DECL_PUBLIC, DECL_SAVE, DECL_TARGET, DECL_VALUE, DECL_VOLATILE, | |
a8b3b0b6 | 2444 | DECL_IS_BIND_C, DECL_COLON, DECL_NONE, |
6de9cd9a DN |
2445 | GFC_DECL_END /* Sentinel */ |
2446 | } | |
2447 | decl_types; | |
2448 | ||
2449 | /* GFC_DECL_END is the sentinel, index starts at 0. */ | |
2450 | #define NUM_DECL GFC_DECL_END | |
2451 | ||
2452 | static mstring decls[] = { | |
2453 | minit (", allocatable", DECL_ALLOCATABLE), | |
2454 | minit (", dimension", DECL_DIMENSION), | |
2455 | minit (", external", DECL_EXTERNAL), | |
2456 | minit (", intent ( in )", DECL_IN), | |
2457 | minit (", intent ( out )", DECL_OUT), | |
2458 | minit (", intent ( in out )", DECL_INOUT), | |
2459 | minit (", intrinsic", DECL_INTRINSIC), | |
2460 | minit (", optional", DECL_OPTIONAL), | |
2461 | minit (", parameter", DECL_PARAMETER), | |
2462 | minit (", pointer", DECL_POINTER), | |
ee7e677f | 2463 | minit (", protected", DECL_PROTECTED), |
6de9cd9a DN |
2464 | minit (", private", DECL_PRIVATE), |
2465 | minit (", public", DECL_PUBLIC), | |
2466 | minit (", save", DECL_SAVE), | |
2467 | minit (", target", DECL_TARGET), | |
06469efd | 2468 | minit (", value", DECL_VALUE), |
775e6c3a | 2469 | minit (", volatile", DECL_VOLATILE), |
6de9cd9a DN |
2470 | minit ("::", DECL_COLON), |
2471 | minit (NULL, DECL_NONE) | |
2472 | }; | |
2473 | ||
2474 | locus start, seen_at[NUM_DECL]; | |
2475 | int seen[NUM_DECL]; | |
2476 | decl_types d; | |
2477 | const char *attr; | |
2478 | match m; | |
2479 | try t; | |
a8b3b0b6 | 2480 | char peek_char; |
6de9cd9a DN |
2481 | |
2482 | gfc_clear_attr (¤t_attr); | |
63645982 | 2483 | start = gfc_current_locus; |
6de9cd9a DN |
2484 | |
2485 | current_as = NULL; | |
2486 | colon_seen = 0; | |
2487 | ||
2488 | /* See if we get all of the keywords up to the final double colon. */ | |
2489 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
2490 | seen[d] = 0; | |
2491 | ||
2492 | for (;;) | |
2493 | { | |
2494 | d = (decl_types) gfc_match_strings (decls); | |
a8b3b0b6 CR |
2495 | |
2496 | if (d == DECL_NONE) | |
2497 | { | |
2498 | /* See if we can find the bind(c) since all else failed. | |
2499 | We need to skip over any whitespace and stop on the ','. */ | |
2500 | gfc_gobble_whitespace (); | |
2501 | peek_char = gfc_peek_char (); | |
2502 | if (peek_char == ',') | |
2503 | { | |
2504 | /* Chomp the comma. */ | |
2505 | peek_char = gfc_next_char (); | |
2506 | /* Try and match the bind(c). */ | |
2507 | if (gfc_match_bind_c (NULL) == MATCH_YES) | |
2508 | d = DECL_IS_BIND_C; | |
2509 | else | |
2510 | { | |
2511 | return MATCH_ERROR; | |
2512 | } | |
2513 | } | |
2514 | } | |
2515 | ||
6de9cd9a DN |
2516 | if (d == DECL_NONE || d == DECL_COLON) |
2517 | break; | |
d51347f9 | 2518 | |
6de9cd9a | 2519 | seen[d]++; |
63645982 | 2520 | seen_at[d] = gfc_current_locus; |
6de9cd9a DN |
2521 | |
2522 | if (d == DECL_DIMENSION) | |
2523 | { | |
2524 | m = gfc_match_array_spec (¤t_as); | |
2525 | ||
2526 | if (m == MATCH_NO) | |
2527 | { | |
2528 | gfc_error ("Missing dimension specification at %C"); | |
2529 | m = MATCH_ERROR; | |
2530 | } | |
2531 | ||
2532 | if (m == MATCH_ERROR) | |
2533 | goto cleanup; | |
2534 | } | |
2535 | } | |
2536 | ||
2537 | /* No double colon, so assume that we've been looking at something | |
2538 | else the whole time. */ | |
2539 | if (d == DECL_NONE) | |
2540 | { | |
2541 | m = MATCH_NO; | |
2542 | goto cleanup; | |
2543 | } | |
2544 | ||
2545 | /* Since we've seen a double colon, we have to be looking at an | |
2546 | attr-spec. This means that we can now issue errors. */ | |
2547 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
2548 | if (seen[d] > 1) | |
2549 | { | |
2550 | switch (d) | |
2551 | { | |
2552 | case DECL_ALLOCATABLE: | |
2553 | attr = "ALLOCATABLE"; | |
2554 | break; | |
2555 | case DECL_DIMENSION: | |
2556 | attr = "DIMENSION"; | |
2557 | break; | |
2558 | case DECL_EXTERNAL: | |
2559 | attr = "EXTERNAL"; | |
2560 | break; | |
2561 | case DECL_IN: | |
2562 | attr = "INTENT (IN)"; | |
2563 | break; | |
2564 | case DECL_OUT: | |
2565 | attr = "INTENT (OUT)"; | |
2566 | break; | |
2567 | case DECL_INOUT: | |
2568 | attr = "INTENT (IN OUT)"; | |
2569 | break; | |
2570 | case DECL_INTRINSIC: | |
2571 | attr = "INTRINSIC"; | |
2572 | break; | |
2573 | case DECL_OPTIONAL: | |
2574 | attr = "OPTIONAL"; | |
2575 | break; | |
2576 | case DECL_PARAMETER: | |
2577 | attr = "PARAMETER"; | |
2578 | break; | |
2579 | case DECL_POINTER: | |
2580 | attr = "POINTER"; | |
2581 | break; | |
ee7e677f TB |
2582 | case DECL_PROTECTED: |
2583 | attr = "PROTECTED"; | |
2584 | break; | |
6de9cd9a DN |
2585 | case DECL_PRIVATE: |
2586 | attr = "PRIVATE"; | |
2587 | break; | |
2588 | case DECL_PUBLIC: | |
2589 | attr = "PUBLIC"; | |
2590 | break; | |
2591 | case DECL_SAVE: | |
2592 | attr = "SAVE"; | |
2593 | break; | |
2594 | case DECL_TARGET: | |
2595 | attr = "TARGET"; | |
2596 | break; | |
a8b3b0b6 CR |
2597 | case DECL_IS_BIND_C: |
2598 | attr = "IS_BIND_C"; | |
2599 | break; | |
2600 | case DECL_VALUE: | |
2601 | attr = "VALUE"; | |
2602 | break; | |
775e6c3a TB |
2603 | case DECL_VOLATILE: |
2604 | attr = "VOLATILE"; | |
2605 | break; | |
6de9cd9a | 2606 | default: |
66e4ab31 | 2607 | attr = NULL; /* This shouldn't happen. */ |
6de9cd9a DN |
2608 | } |
2609 | ||
2610 | gfc_error ("Duplicate %s attribute at %L", attr, &seen_at[d]); | |
2611 | m = MATCH_ERROR; | |
2612 | goto cleanup; | |
2613 | } | |
2614 | ||
2615 | /* Now that we've dealt with duplicate attributes, add the attributes | |
2616 | to the current attribute. */ | |
2617 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
2618 | { | |
2619 | if (seen[d] == 0) | |
2620 | continue; | |
2621 | ||
2622 | if (gfc_current_state () == COMP_DERIVED | |
2623 | && d != DECL_DIMENSION && d != DECL_POINTER | |
d51347f9 TB |
2624 | && d != DECL_COLON && d != DECL_PRIVATE |
2625 | && d != DECL_PUBLIC && d != DECL_NONE) | |
6de9cd9a | 2626 | { |
5046aff5 PT |
2627 | if (d == DECL_ALLOCATABLE) |
2628 | { | |
636dff67 SK |
2629 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: ALLOCATABLE " |
2630 | "attribute at %C in a TYPE definition") | |
d51347f9 | 2631 | == FAILURE) |
5046aff5 PT |
2632 | { |
2633 | m = MATCH_ERROR; | |
2634 | goto cleanup; | |
2635 | } | |
636dff67 SK |
2636 | } |
2637 | else | |
5046aff5 PT |
2638 | { |
2639 | gfc_error ("Attribute at %L is not allowed in a TYPE definition", | |
d51347f9 | 2640 | &seen_at[d]); |
5046aff5 PT |
2641 | m = MATCH_ERROR; |
2642 | goto cleanup; | |
2643 | } | |
6de9cd9a DN |
2644 | } |
2645 | ||
4213f93b | 2646 | if ((d == DECL_PRIVATE || d == DECL_PUBLIC) |
636dff67 | 2647 | && gfc_current_state () != COMP_MODULE) |
4213f93b PT |
2648 | { |
2649 | if (d == DECL_PRIVATE) | |
2650 | attr = "PRIVATE"; | |
2651 | else | |
2652 | attr = "PUBLIC"; | |
d51347f9 TB |
2653 | if (gfc_current_state () == COMP_DERIVED |
2654 | && gfc_state_stack->previous | |
2655 | && gfc_state_stack->previous->state == COMP_MODULE) | |
2656 | { | |
2657 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: Attribute %s " | |
2658 | "at %L in a TYPE definition", attr, | |
2659 | &seen_at[d]) | |
2660 | == FAILURE) | |
2661 | { | |
2662 | m = MATCH_ERROR; | |
2663 | goto cleanup; | |
2664 | } | |
2665 | } | |
2666 | else | |
2667 | { | |
2668 | gfc_error ("%s attribute at %L is not allowed outside of the " | |
2669 | "specification part of a module", attr, &seen_at[d]); | |
2670 | m = MATCH_ERROR; | |
2671 | goto cleanup; | |
2672 | } | |
4213f93b PT |
2673 | } |
2674 | ||
6de9cd9a DN |
2675 | switch (d) |
2676 | { | |
2677 | case DECL_ALLOCATABLE: | |
2678 | t = gfc_add_allocatable (¤t_attr, &seen_at[d]); | |
2679 | break; | |
2680 | ||
2681 | case DECL_DIMENSION: | |
231b2fcc | 2682 | t = gfc_add_dimension (¤t_attr, NULL, &seen_at[d]); |
6de9cd9a DN |
2683 | break; |
2684 | ||
2685 | case DECL_EXTERNAL: | |
2686 | t = gfc_add_external (¤t_attr, &seen_at[d]); | |
2687 | break; | |
2688 | ||
2689 | case DECL_IN: | |
2690 | t = gfc_add_intent (¤t_attr, INTENT_IN, &seen_at[d]); | |
2691 | break; | |
2692 | ||
2693 | case DECL_OUT: | |
2694 | t = gfc_add_intent (¤t_attr, INTENT_OUT, &seen_at[d]); | |
2695 | break; | |
2696 | ||
2697 | case DECL_INOUT: | |
2698 | t = gfc_add_intent (¤t_attr, INTENT_INOUT, &seen_at[d]); | |
2699 | break; | |
2700 | ||
2701 | case DECL_INTRINSIC: | |
2702 | t = gfc_add_intrinsic (¤t_attr, &seen_at[d]); | |
2703 | break; | |
2704 | ||
2705 | case DECL_OPTIONAL: | |
2706 | t = gfc_add_optional (¤t_attr, &seen_at[d]); | |
2707 | break; | |
2708 | ||
2709 | case DECL_PARAMETER: | |
231b2fcc | 2710 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, &seen_at[d]); |
6de9cd9a DN |
2711 | break; |
2712 | ||
2713 | case DECL_POINTER: | |
2714 | t = gfc_add_pointer (¤t_attr, &seen_at[d]); | |
2715 | break; | |
2716 | ||
ee7e677f TB |
2717 | case DECL_PROTECTED: |
2718 | if (gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
2719 | { | |
2720 | gfc_error ("PROTECTED at %C only allowed in specification " | |
2721 | "part of a module"); | |
2722 | t = FAILURE; | |
2723 | break; | |
2724 | } | |
2725 | ||
636dff67 SK |
2726 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: PROTECTED " |
2727 | "attribute at %C") | |
ee7e677f TB |
2728 | == FAILURE) |
2729 | t = FAILURE; | |
2730 | else | |
2731 | t = gfc_add_protected (¤t_attr, NULL, &seen_at[d]); | |
2732 | break; | |
2733 | ||
6de9cd9a | 2734 | case DECL_PRIVATE: |
231b2fcc TS |
2735 | t = gfc_add_access (¤t_attr, ACCESS_PRIVATE, NULL, |
2736 | &seen_at[d]); | |
6de9cd9a DN |
2737 | break; |
2738 | ||
2739 | case DECL_PUBLIC: | |
231b2fcc TS |
2740 | t = gfc_add_access (¤t_attr, ACCESS_PUBLIC, NULL, |
2741 | &seen_at[d]); | |
6de9cd9a DN |
2742 | break; |
2743 | ||
2744 | case DECL_SAVE: | |
231b2fcc | 2745 | t = gfc_add_save (¤t_attr, NULL, &seen_at[d]); |
6de9cd9a DN |
2746 | break; |
2747 | ||
2748 | case DECL_TARGET: | |
2749 | t = gfc_add_target (¤t_attr, &seen_at[d]); | |
2750 | break; | |
2751 | ||
a8b3b0b6 CR |
2752 | case DECL_IS_BIND_C: |
2753 | t = gfc_add_is_bind_c(¤t_attr, NULL, &seen_at[d], 0); | |
2754 | break; | |
2755 | ||
06469efd | 2756 | case DECL_VALUE: |
636dff67 SK |
2757 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: VALUE attribute " |
2758 | "at %C") | |
06469efd PT |
2759 | == FAILURE) |
2760 | t = FAILURE; | |
2761 | else | |
2762 | t = gfc_add_value (¤t_attr, NULL, &seen_at[d]); | |
2763 | break; | |
2764 | ||
775e6c3a TB |
2765 | case DECL_VOLATILE: |
2766 | if (gfc_notify_std (GFC_STD_F2003, | |
636dff67 | 2767 | "Fortran 2003: VOLATILE attribute at %C") |
775e6c3a TB |
2768 | == FAILURE) |
2769 | t = FAILURE; | |
2770 | else | |
2771 | t = gfc_add_volatile (¤t_attr, NULL, &seen_at[d]); | |
2772 | break; | |
2773 | ||
6de9cd9a DN |
2774 | default: |
2775 | gfc_internal_error ("match_attr_spec(): Bad attribute"); | |
2776 | } | |
2777 | ||
2778 | if (t == FAILURE) | |
2779 | { | |
2780 | m = MATCH_ERROR; | |
2781 | goto cleanup; | |
2782 | } | |
2783 | } | |
2784 | ||
2785 | colon_seen = 1; | |
2786 | return MATCH_YES; | |
2787 | ||
2788 | cleanup: | |
63645982 | 2789 | gfc_current_locus = start; |
6de9cd9a DN |
2790 | gfc_free_array_spec (current_as); |
2791 | current_as = NULL; | |
2792 | return m; | |
2793 | } | |
2794 | ||
2795 | ||
a8b3b0b6 CR |
2796 | /* Set the binding label, dest_label, either with the binding label |
2797 | stored in the given gfc_typespec, ts, or if none was provided, it | |
2798 | will be the symbol name in all lower case, as required by the draft | |
2799 | (J3/04-007, section 15.4.1). If a binding label was given and | |
2800 | there is more than one argument (num_idents), it is an error. */ | |
2801 | ||
2802 | try | |
2803 | set_binding_label (char *dest_label, const char *sym_name, int num_idents) | |
2804 | { | |
2805 | if (curr_binding_label[0] != '\0') | |
2806 | { | |
2807 | if (num_idents > 1 || num_idents_on_line > 1) | |
2808 | { | |
2809 | gfc_error ("Multiple identifiers provided with " | |
2810 | "single NAME= specifier at %C"); | |
2811 | return FAILURE; | |
2812 | } | |
2813 | ||
2814 | /* Binding label given; store in temp holder til have sym. */ | |
2815 | strncpy (dest_label, curr_binding_label, | |
2816 | strlen (curr_binding_label) + 1); | |
2817 | } | |
2818 | else | |
2819 | { | |
2820 | /* No binding label given, and the NAME= specifier did not exist, | |
2821 | which means there was no NAME="". */ | |
2822 | if (sym_name != NULL && has_name_equals == 0) | |
2823 | strncpy (dest_label, sym_name, strlen (sym_name) + 1); | |
2824 | } | |
2825 | ||
2826 | return SUCCESS; | |
2827 | } | |
2828 | ||
2829 | ||
2830 | /* Set the status of the given common block as being BIND(C) or not, | |
2831 | depending on the given parameter, is_bind_c. */ | |
2832 | ||
2833 | void | |
2834 | set_com_block_bind_c (gfc_common_head *com_block, int is_bind_c) | |
2835 | { | |
2836 | com_block->is_bind_c = is_bind_c; | |
2837 | return; | |
2838 | } | |
2839 | ||
2840 | ||
2841 | /* Verify that the given gfc_typespec is for a C interoperable type. */ | |
2842 | ||
2843 | try | |
2844 | verify_c_interop (gfc_typespec *ts, const char *name, locus *where) | |
2845 | { | |
2846 | try t; | |
2847 | ||
2848 | /* Make sure the kind used is appropriate for the type. | |
2849 | The f90_type is unknown if an integer constant was | |
2850 | used (e.g., real(4), bind(c) :: myFloat). */ | |
2851 | if (ts->f90_type != BT_UNKNOWN) | |
2852 | { | |
2853 | t = gfc_validate_c_kind (ts); | |
2854 | if (t != SUCCESS) | |
2855 | { | |
2856 | /* Print an error, but continue parsing line. */ | |
2857 | gfc_error_now ("C kind parameter is for type %s but " | |
2858 | "symbol '%s' at %L is of type %s", | |
2859 | gfc_basic_typename (ts->f90_type), | |
2860 | name, where, | |
2861 | gfc_basic_typename (ts->type)); | |
2862 | } | |
2863 | } | |
2864 | ||
2865 | /* Make sure the kind is C interoperable. This does not care about the | |
2866 | possible error above. */ | |
2867 | if (ts->type == BT_DERIVED && ts->derived != NULL) | |
2868 | return (ts->derived->ts.is_c_interop ? SUCCESS : FAILURE); | |
2869 | else if (ts->is_c_interop != 1) | |
2870 | return FAILURE; | |
2871 | ||
2872 | return SUCCESS; | |
2873 | } | |
2874 | ||
2875 | ||
2876 | /* Verify that the variables of a given common block, which has been | |
2877 | defined with the attribute specifier bind(c), to be of a C | |
2878 | interoperable type. Errors will be reported here, if | |
2879 | encountered. */ | |
2880 | ||
2881 | try | |
2882 | verify_com_block_vars_c_interop (gfc_common_head *com_block) | |
2883 | { | |
2884 | gfc_symbol *curr_sym = NULL; | |
2885 | try retval = SUCCESS; | |
2886 | ||
2887 | curr_sym = com_block->head; | |
2888 | ||
2889 | /* Make sure we have at least one symbol. */ | |
2890 | if (curr_sym == NULL) | |
2891 | return retval; | |
2892 | ||
2893 | /* Here we know we have a symbol, so we'll execute this loop | |
2894 | at least once. */ | |
2895 | do | |
2896 | { | |
2897 | /* The second to last param, 1, says this is in a common block. */ | |
2898 | retval = verify_bind_c_sym (curr_sym, &(curr_sym->ts), 1, com_block); | |
2899 | curr_sym = curr_sym->common_next; | |
2900 | } while (curr_sym != NULL); | |
2901 | ||
2902 | return retval; | |
2903 | } | |
2904 | ||
2905 | ||
2906 | /* Verify that a given BIND(C) symbol is C interoperable. If it is not, | |
2907 | an appropriate error message is reported. */ | |
2908 | ||
2909 | try | |
2910 | verify_bind_c_sym (gfc_symbol *tmp_sym, gfc_typespec *ts, | |
2911 | int is_in_common, gfc_common_head *com_block) | |
2912 | { | |
2913 | try retval = SUCCESS; | |
2914 | ||
2915 | /* Here, we know we have the bind(c) attribute, so if we have | |
2916 | enough type info, then verify that it's a C interop kind. | |
2917 | The info could be in the symbol already, or possibly still in | |
2918 | the given ts (current_ts), so look in both. */ | |
2919 | if (tmp_sym->ts.type != BT_UNKNOWN || ts->type != BT_UNKNOWN) | |
2920 | { | |
2921 | if (verify_c_interop (&(tmp_sym->ts), tmp_sym->name, | |
2922 | &(tmp_sym->declared_at)) != SUCCESS) | |
2923 | { | |
2924 | /* See if we're dealing with a sym in a common block or not. */ | |
2925 | if (is_in_common == 1) | |
2926 | { | |
2927 | gfc_warning ("Variable '%s' in common block '%s' at %L " | |
2928 | "may not be a C interoperable " | |
2929 | "kind though common block '%s' is BIND(C)", | |
2930 | tmp_sym->name, com_block->name, | |
2931 | &(tmp_sym->declared_at), com_block->name); | |
2932 | } | |
2933 | else | |
2934 | { | |
2935 | if (tmp_sym->ts.type == BT_DERIVED || ts->type == BT_DERIVED) | |
2936 | gfc_error ("Type declaration '%s' at %L is not C " | |
2937 | "interoperable but it is BIND(C)", | |
2938 | tmp_sym->name, &(tmp_sym->declared_at)); | |
2939 | else | |
2940 | gfc_warning ("Variable '%s' at %L " | |
2941 | "may not be a C interoperable " | |
2942 | "kind but it is bind(c)", | |
2943 | tmp_sym->name, &(tmp_sym->declared_at)); | |
2944 | } | |
2945 | } | |
2946 | ||
2947 | /* Variables declared w/in a common block can't be bind(c) | |
2948 | since there's no way for C to see these variables, so there's | |
2949 | semantically no reason for the attribute. */ | |
2950 | if (is_in_common == 1 && tmp_sym->attr.is_bind_c == 1) | |
2951 | { | |
2952 | gfc_error ("Variable '%s' in common block '%s' at " | |
2953 | "%L cannot be declared with BIND(C) " | |
2954 | "since it is not a global", | |
2955 | tmp_sym->name, com_block->name, | |
2956 | &(tmp_sym->declared_at)); | |
2957 | retval = FAILURE; | |
2958 | } | |
2959 | ||
2960 | /* Scalar variables that are bind(c) can not have the pointer | |
2961 | or allocatable attributes. */ | |
2962 | if (tmp_sym->attr.is_bind_c == 1) | |
2963 | { | |
2964 | if (tmp_sym->attr.pointer == 1) | |
2965 | { | |
2966 | gfc_error ("Variable '%s' at %L cannot have both the " | |
2967 | "POINTER and BIND(C) attributes", | |
2968 | tmp_sym->name, &(tmp_sym->declared_at)); | |
2969 | retval = FAILURE; | |
2970 | } | |
2971 | ||
2972 | if (tmp_sym->attr.allocatable == 1) | |
2973 | { | |
2974 | gfc_error ("Variable '%s' at %L cannot have both the " | |
2975 | "ALLOCATABLE and BIND(C) attributes", | |
2976 | tmp_sym->name, &(tmp_sym->declared_at)); | |
2977 | retval = FAILURE; | |
2978 | } | |
2979 | ||
2980 | /* If it is a BIND(C) function, make sure the return value is a | |
2981 | scalar value. The previous tests in this function made sure | |
2982 | the type is interoperable. */ | |
2983 | if (tmp_sym->attr.function == 1 && tmp_sym->as != NULL) | |
2984 | gfc_error ("Return type of BIND(C) function '%s' at %L cannot " | |
2985 | "be an array", tmp_sym->name, &(tmp_sym->declared_at)); | |
2986 | ||
2987 | /* BIND(C) functions can not return a character string. */ | |
2988 | if (tmp_sym->attr.function == 1 && tmp_sym->ts.type == BT_CHARACTER) | |
2989 | if (tmp_sym->ts.cl == NULL || tmp_sym->ts.cl->length == NULL | |
2990 | || tmp_sym->ts.cl->length->expr_type != EXPR_CONSTANT | |
2991 | || mpz_cmp_si (tmp_sym->ts.cl->length->value.integer, 1) != 0) | |
2992 | gfc_error ("Return type of BIND(C) function '%s' at %L cannot " | |
2993 | "be a character string", tmp_sym->name, | |
2994 | &(tmp_sym->declared_at)); | |
2995 | } | |
2996 | } | |
2997 | ||
2998 | /* See if the symbol has been marked as private. If it has, make sure | |
2999 | there is no binding label and warn the user if there is one. */ | |
3000 | if (tmp_sym->attr.access == ACCESS_PRIVATE | |
3001 | && tmp_sym->binding_label[0] != '\0') | |
3002 | /* Use gfc_warning_now because we won't say that the symbol fails | |
3003 | just because of this. */ | |
3004 | gfc_warning_now ("Symbol '%s' at %L is marked PRIVATE but has been " | |
3005 | "given the binding label '%s'", tmp_sym->name, | |
3006 | &(tmp_sym->declared_at), tmp_sym->binding_label); | |
3007 | ||
3008 | return retval; | |
3009 | } | |
3010 | ||
3011 | ||
3012 | /* Set the appropriate fields for a symbol that's been declared as | |
3013 | BIND(C) (the is_bind_c flag and the binding label), and verify that | |
3014 | the type is C interoperable. Errors are reported by the functions | |
3015 | used to set/test these fields. */ | |
3016 | ||
3017 | try | |
3018 | set_verify_bind_c_sym (gfc_symbol *tmp_sym, int num_idents) | |
3019 | { | |
3020 | try retval = SUCCESS; | |
3021 | ||
3022 | /* TODO: Do we need to make sure the vars aren't marked private? */ | |
3023 | ||
3024 | /* Set the is_bind_c bit in symbol_attribute. */ | |
3025 | gfc_add_is_bind_c (&(tmp_sym->attr), tmp_sym->name, &gfc_current_locus, 0); | |
3026 | ||
3027 | if (set_binding_label (tmp_sym->binding_label, tmp_sym->name, | |
3028 | num_idents) != SUCCESS) | |
3029 | return FAILURE; | |
3030 | ||
3031 | return retval; | |
3032 | } | |
3033 | ||
3034 | ||
3035 | /* Set the fields marking the given common block as BIND(C), including | |
3036 | a binding label, and report any errors encountered. */ | |
3037 | ||
3038 | try | |
3039 | set_verify_bind_c_com_block (gfc_common_head *com_block, int num_idents) | |
3040 | { | |
3041 | try retval = SUCCESS; | |
3042 | ||
3043 | /* destLabel, common name, typespec (which may have binding label). */ | |
3044 | if (set_binding_label (com_block->binding_label, com_block->name, num_idents) | |
3045 | != SUCCESS) | |
3046 | return FAILURE; | |
3047 | ||
3048 | /* Set the given common block (com_block) to being bind(c) (1). */ | |
3049 | set_com_block_bind_c (com_block, 1); | |
3050 | ||
3051 | return retval; | |
3052 | } | |
3053 | ||
3054 | ||
3055 | /* Retrieve the list of one or more identifiers that the given bind(c) | |
3056 | attribute applies to. */ | |
3057 | ||
3058 | try | |
3059 | get_bind_c_idents (void) | |
3060 | { | |
3061 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
3062 | int num_idents = 0; | |
3063 | gfc_symbol *tmp_sym = NULL; | |
3064 | match found_id; | |
3065 | gfc_common_head *com_block = NULL; | |
3066 | ||
3067 | if (gfc_match_name (name) == MATCH_YES) | |
3068 | { | |
3069 | found_id = MATCH_YES; | |
3070 | gfc_get_ha_symbol (name, &tmp_sym); | |
3071 | } | |
3072 | else if (match_common_name (name) == MATCH_YES) | |
3073 | { | |
3074 | found_id = MATCH_YES; | |
3075 | com_block = gfc_get_common (name, 0); | |
3076 | } | |
3077 | else | |
3078 | { | |
3079 | gfc_error ("Need either entity or common block name for " | |
3080 | "attribute specification statement at %C"); | |
3081 | return FAILURE; | |
3082 | } | |
3083 | ||
3084 | /* Save the current identifier and look for more. */ | |
3085 | do | |
3086 | { | |
3087 | /* Increment the number of identifiers found for this spec stmt. */ | |
3088 | num_idents++; | |
3089 | ||
3090 | /* Make sure we have a sym or com block, and verify that it can | |
3091 | be bind(c). Set the appropriate field(s) and look for more | |
3092 | identifiers. */ | |
3093 | if (tmp_sym != NULL || com_block != NULL) | |
3094 | { | |
3095 | if (tmp_sym != NULL) | |
3096 | { | |
3097 | if (set_verify_bind_c_sym (tmp_sym, num_idents) | |
3098 | != SUCCESS) | |
3099 | return FAILURE; | |
3100 | } | |
3101 | else | |
3102 | { | |
3103 | if (set_verify_bind_c_com_block(com_block, num_idents) | |
3104 | != SUCCESS) | |
3105 | return FAILURE; | |
3106 | } | |
3107 | ||
3108 | /* Look to see if we have another identifier. */ | |
3109 | tmp_sym = NULL; | |
3110 | if (gfc_match_eos () == MATCH_YES) | |
3111 | found_id = MATCH_NO; | |
3112 | else if (gfc_match_char (',') != MATCH_YES) | |
3113 | found_id = MATCH_NO; | |
3114 | else if (gfc_match_name (name) == MATCH_YES) | |
3115 | { | |
3116 | found_id = MATCH_YES; | |
3117 | gfc_get_ha_symbol (name, &tmp_sym); | |
3118 | } | |
3119 | else if (match_common_name (name) == MATCH_YES) | |
3120 | { | |
3121 | found_id = MATCH_YES; | |
3122 | com_block = gfc_get_common (name, 0); | |
3123 | } | |
3124 | else | |
3125 | { | |
3126 | gfc_error ("Missing entity or common block name for " | |
3127 | "attribute specification statement at %C"); | |
3128 | return FAILURE; | |
3129 | } | |
3130 | } | |
3131 | else | |
3132 | { | |
3133 | gfc_internal_error ("Missing symbol"); | |
3134 | } | |
3135 | } while (found_id == MATCH_YES); | |
3136 | ||
3137 | /* if we get here we were successful */ | |
3138 | return SUCCESS; | |
3139 | } | |
3140 | ||
3141 | ||
3142 | /* Try and match a BIND(C) attribute specification statement. */ | |
3143 | ||
3144 | match | |
3145 | gfc_match_bind_c_stmt (void) | |
3146 | { | |
3147 | match found_match = MATCH_NO; | |
3148 | gfc_typespec *ts; | |
3149 | ||
3150 | ts = ¤t_ts; | |
3151 | ||
3152 | /* This may not be necessary. */ | |
3153 | gfc_clear_ts (ts); | |
3154 | /* Clear the temporary binding label holder. */ | |
3155 | curr_binding_label[0] = '\0'; | |
3156 | ||
3157 | /* Look for the bind(c). */ | |
3158 | found_match = gfc_match_bind_c (NULL); | |
3159 | ||
3160 | if (found_match == MATCH_YES) | |
3161 | { | |
3162 | /* Look for the :: now, but it is not required. */ | |
3163 | gfc_match (" :: "); | |
3164 | ||
3165 | /* Get the identifier(s) that needs to be updated. This may need to | |
3166 | change to hand the flag(s) for the attr specified so all identifiers | |
3167 | found can have all appropriate parts updated (assuming that the same | |
3168 | spec stmt can have multiple attrs, such as both bind(c) and | |
3169 | allocatable...). */ | |
3170 | if (get_bind_c_idents () != SUCCESS) | |
3171 | /* Error message should have printed already. */ | |
3172 | return MATCH_ERROR; | |
3173 | } | |
3174 | ||
3175 | return found_match; | |
3176 | } | |
3177 | ||
3178 | ||
6de9cd9a DN |
3179 | /* Match a data declaration statement. */ |
3180 | ||
3181 | match | |
3182 | gfc_match_data_decl (void) | |
3183 | { | |
3184 | gfc_symbol *sym; | |
3185 | match m; | |
949d5b72 | 3186 | int elem; |
6de9cd9a | 3187 | |
a8b3b0b6 CR |
3188 | num_idents_on_line = 0; |
3189 | ||
e5ddaa24 | 3190 | m = match_type_spec (¤t_ts, 0); |
6de9cd9a DN |
3191 | if (m != MATCH_YES) |
3192 | return m; | |
3193 | ||
3194 | if (current_ts.type == BT_DERIVED && gfc_current_state () != COMP_DERIVED) | |
3195 | { | |
3196 | sym = gfc_use_derived (current_ts.derived); | |
3197 | ||
3198 | if (sym == NULL) | |
3199 | { | |
3200 | m = MATCH_ERROR; | |
3201 | goto cleanup; | |
3202 | } | |
3203 | ||
3204 | current_ts.derived = sym; | |
3205 | } | |
3206 | ||
3207 | m = match_attr_spec (); | |
3208 | if (m == MATCH_ERROR) | |
3209 | { | |
3210 | m = MATCH_NO; | |
3211 | goto cleanup; | |
3212 | } | |
3213 | ||
3214 | if (current_ts.type == BT_DERIVED && current_ts.derived->components == NULL) | |
3215 | { | |
3216 | ||
3217 | if (current_attr.pointer && gfc_current_state () == COMP_DERIVED) | |
3218 | goto ok; | |
3219 | ||
976e21f6 | 3220 | gfc_find_symbol (current_ts.derived->name, |
636dff67 | 3221 | current_ts.derived->ns->parent, 1, &sym); |
6de9cd9a | 3222 | |
976e21f6 | 3223 | /* Any symbol that we find had better be a type definition |
636dff67 | 3224 | which has its components defined. */ |
976e21f6 | 3225 | if (sym != NULL && sym->attr.flavor == FL_DERIVED |
636dff67 | 3226 | && current_ts.derived->components != NULL) |
6de9cd9a DN |
3227 | goto ok; |
3228 | ||
976e21f6 PT |
3229 | /* Now we have an error, which we signal, and then fix up |
3230 | because the knock-on is plain and simple confusing. */ | |
3231 | gfc_error_now ("Derived type at %C has not been previously defined " | |
636dff67 | 3232 | "and so cannot appear in a derived type definition"); |
976e21f6 PT |
3233 | current_attr.pointer = 1; |
3234 | goto ok; | |
6de9cd9a DN |
3235 | } |
3236 | ||
3237 | ok: | |
3238 | /* If we have an old-style character declaration, and no new-style | |
3239 | attribute specifications, then there a comma is optional between | |
3240 | the type specification and the variable list. */ | |
3241 | if (m == MATCH_NO && current_ts.type == BT_CHARACTER && old_char_selector) | |
3242 | gfc_match_char (','); | |
3243 | ||
949d5b72 PT |
3244 | /* Give the types/attributes to symbols that follow. Give the element |
3245 | a number so that repeat character length expressions can be copied. */ | |
3246 | elem = 1; | |
6de9cd9a DN |
3247 | for (;;) |
3248 | { | |
a8b3b0b6 | 3249 | num_idents_on_line++; |
949d5b72 | 3250 | m = variable_decl (elem++); |
6de9cd9a DN |
3251 | if (m == MATCH_ERROR) |
3252 | goto cleanup; | |
3253 | if (m == MATCH_NO) | |
3254 | break; | |
3255 | ||
3256 | if (gfc_match_eos () == MATCH_YES) | |
3257 | goto cleanup; | |
3258 | if (gfc_match_char (',') != MATCH_YES) | |
3259 | break; | |
3260 | } | |
3261 | ||
8f81c3c6 PT |
3262 | if (gfc_error_flag_test () == 0) |
3263 | gfc_error ("Syntax error in data declaration at %C"); | |
6de9cd9a DN |
3264 | m = MATCH_ERROR; |
3265 | ||
a9f6f1f2 JD |
3266 | gfc_free_data_all (gfc_current_ns); |
3267 | ||
6de9cd9a DN |
3268 | cleanup: |
3269 | gfc_free_array_spec (current_as); | |
3270 | current_as = NULL; | |
3271 | return m; | |
3272 | } | |
3273 | ||
3274 | ||
3275 | /* Match a prefix associated with a function or subroutine | |
3276 | declaration. If the typespec pointer is nonnull, then a typespec | |
3277 | can be matched. Note that if nothing matches, MATCH_YES is | |
3278 | returned (the null string was matched). */ | |
3279 | ||
3280 | static match | |
636dff67 | 3281 | match_prefix (gfc_typespec *ts) |
6de9cd9a DN |
3282 | { |
3283 | int seen_type; | |
3284 | ||
3285 | gfc_clear_attr (¤t_attr); | |
3286 | seen_type = 0; | |
3287 | ||
3288 | loop: | |
3289 | if (!seen_type && ts != NULL | |
e5ddaa24 | 3290 | && match_type_spec (ts, 0) == MATCH_YES |
6de9cd9a DN |
3291 | && gfc_match_space () == MATCH_YES) |
3292 | { | |
3293 | ||
3294 | seen_type = 1; | |
3295 | goto loop; | |
3296 | } | |
3297 | ||
3298 | if (gfc_match ("elemental% ") == MATCH_YES) | |
3299 | { | |
3300 | if (gfc_add_elemental (¤t_attr, NULL) == FAILURE) | |
3301 | return MATCH_ERROR; | |
3302 | ||
3303 | goto loop; | |
3304 | } | |
3305 | ||
3306 | if (gfc_match ("pure% ") == MATCH_YES) | |
3307 | { | |
3308 | if (gfc_add_pure (¤t_attr, NULL) == FAILURE) | |
3309 | return MATCH_ERROR; | |
3310 | ||
3311 | goto loop; | |
3312 | } | |
3313 | ||
3314 | if (gfc_match ("recursive% ") == MATCH_YES) | |
3315 | { | |
3316 | if (gfc_add_recursive (¤t_attr, NULL) == FAILURE) | |
3317 | return MATCH_ERROR; | |
3318 | ||
3319 | goto loop; | |
3320 | } | |
3321 | ||
3322 | /* At this point, the next item is not a prefix. */ | |
3323 | return MATCH_YES; | |
3324 | } | |
3325 | ||
3326 | ||
3327 | /* Copy attributes matched by match_prefix() to attributes on a symbol. */ | |
3328 | ||
3329 | static try | |
636dff67 | 3330 | copy_prefix (symbol_attribute *dest, locus *where) |
6de9cd9a | 3331 | { |
6de9cd9a DN |
3332 | if (current_attr.pure && gfc_add_pure (dest, where) == FAILURE) |
3333 | return FAILURE; | |
3334 | ||
3335 | if (current_attr.elemental && gfc_add_elemental (dest, where) == FAILURE) | |
3336 | return FAILURE; | |
3337 | ||
3338 | if (current_attr.recursive && gfc_add_recursive (dest, where) == FAILURE) | |
3339 | return FAILURE; | |
3340 | ||
3341 | return SUCCESS; | |
3342 | } | |
3343 | ||
3344 | ||
3345 | /* Match a formal argument list. */ | |
3346 | ||
3347 | match | |
636dff67 | 3348 | gfc_match_formal_arglist (gfc_symbol *progname, int st_flag, int null_flag) |
6de9cd9a DN |
3349 | { |
3350 | gfc_formal_arglist *head, *tail, *p, *q; | |
3351 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
3352 | gfc_symbol *sym; | |
3353 | match m; | |
3354 | ||
3355 | head = tail = NULL; | |
3356 | ||
3357 | if (gfc_match_char ('(') != MATCH_YES) | |
3358 | { | |
3359 | if (null_flag) | |
3360 | goto ok; | |
3361 | return MATCH_NO; | |
3362 | } | |
3363 | ||
3364 | if (gfc_match_char (')') == MATCH_YES) | |
3365 | goto ok; | |
3366 | ||
3367 | for (;;) | |
3368 | { | |
3369 | if (gfc_match_char ('*') == MATCH_YES) | |
3370 | sym = NULL; | |
3371 | else | |
3372 | { | |
3373 | m = gfc_match_name (name); | |
3374 | if (m != MATCH_YES) | |
3375 | goto cleanup; | |
3376 | ||
3377 | if (gfc_get_symbol (name, NULL, &sym)) | |
3378 | goto cleanup; | |
3379 | } | |
3380 | ||
3381 | p = gfc_get_formal_arglist (); | |
3382 | ||
3383 | if (head == NULL) | |
3384 | head = tail = p; | |
3385 | else | |
3386 | { | |
3387 | tail->next = p; | |
3388 | tail = p; | |
3389 | } | |
3390 | ||
3391 | tail->sym = sym; | |
3392 | ||
3393 | /* We don't add the VARIABLE flavor because the name could be a | |
636dff67 SK |
3394 | dummy procedure. We don't apply these attributes to formal |
3395 | arguments of statement functions. */ | |
6de9cd9a | 3396 | if (sym != NULL && !st_flag |
231b2fcc | 3397 | && (gfc_add_dummy (&sym->attr, sym->name, NULL) == FAILURE |
6de9cd9a DN |
3398 | || gfc_missing_attr (&sym->attr, NULL) == FAILURE)) |
3399 | { | |
3400 | m = MATCH_ERROR; | |
3401 | goto cleanup; | |
3402 | } | |
3403 | ||
3404 | /* The name of a program unit can be in a different namespace, | |
636dff67 SK |
3405 | so check for it explicitly. After the statement is accepted, |
3406 | the name is checked for especially in gfc_get_symbol(). */ | |
6de9cd9a DN |
3407 | if (gfc_new_block != NULL && sym != NULL |
3408 | && strcmp (sym->name, gfc_new_block->name) == 0) | |
3409 | { | |
3410 | gfc_error ("Name '%s' at %C is the name of the procedure", | |
3411 | sym->name); | |
3412 | m = MATCH_ERROR; | |
3413 | goto cleanup; | |
3414 | } | |
3415 | ||
3416 | if (gfc_match_char (')') == MATCH_YES) | |
3417 | goto ok; | |
3418 | ||
3419 | m = gfc_match_char (','); | |
3420 | if (m != MATCH_YES) | |
3421 | { | |
3422 | gfc_error ("Unexpected junk in formal argument list at %C"); | |
3423 | goto cleanup; | |
3424 | } | |
3425 | } | |
3426 | ||
3427 | ok: | |
3428 | /* Check for duplicate symbols in the formal argument list. */ | |
3429 | if (head != NULL) | |
3430 | { | |
3431 | for (p = head; p->next; p = p->next) | |
3432 | { | |
3433 | if (p->sym == NULL) | |
3434 | continue; | |
3435 | ||
3436 | for (q = p->next; q; q = q->next) | |
3437 | if (p->sym == q->sym) | |
3438 | { | |
636dff67 SK |
3439 | gfc_error ("Duplicate symbol '%s' in formal argument list " |
3440 | "at %C", p->sym->name); | |
6de9cd9a DN |
3441 | |
3442 | m = MATCH_ERROR; | |
3443 | goto cleanup; | |
3444 | } | |
3445 | } | |
3446 | } | |
3447 | ||
66e4ab31 SK |
3448 | if (gfc_add_explicit_interface (progname, IFSRC_DECL, head, NULL) |
3449 | == FAILURE) | |
6de9cd9a DN |
3450 | { |
3451 | m = MATCH_ERROR; | |
3452 | goto cleanup; | |
3453 | } | |
3454 | ||
3455 | return MATCH_YES; | |
3456 | ||
3457 | cleanup: | |
3458 | gfc_free_formal_arglist (head); | |
3459 | return m; | |
3460 | } | |
3461 | ||
3462 | ||
3463 | /* Match a RESULT specification following a function declaration or | |
3464 | ENTRY statement. Also matches the end-of-statement. */ | |
3465 | ||
3466 | static match | |
66e4ab31 | 3467 | match_result (gfc_symbol *function, gfc_symbol **result) |
6de9cd9a DN |
3468 | { |
3469 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
3470 | gfc_symbol *r; | |
3471 | match m; | |
3472 | ||
3473 | if (gfc_match (" result (") != MATCH_YES) | |
3474 | return MATCH_NO; | |
3475 | ||
3476 | m = gfc_match_name (name); | |
3477 | if (m != MATCH_YES) | |
3478 | return m; | |
3479 | ||
a8b3b0b6 CR |
3480 | /* Get the right paren, and that's it because there could be the |
3481 | bind(c) attribute after the result clause. */ | |
3482 | if (gfc_match_char(')') != MATCH_YES) | |
6de9cd9a | 3483 | { |
a8b3b0b6 | 3484 | /* TODO: should report the missing right paren here. */ |
6de9cd9a DN |
3485 | return MATCH_ERROR; |
3486 | } | |
3487 | ||
3488 | if (strcmp (function->name, name) == 0) | |
3489 | { | |
636dff67 | 3490 | gfc_error ("RESULT variable at %C must be different than function name"); |
6de9cd9a DN |
3491 | return MATCH_ERROR; |
3492 | } | |
3493 | ||
3494 | if (gfc_get_symbol (name, NULL, &r)) | |
3495 | return MATCH_ERROR; | |
3496 | ||
231b2fcc TS |
3497 | if (gfc_add_flavor (&r->attr, FL_VARIABLE, r->name, NULL) == FAILURE |
3498 | || gfc_add_result (&r->attr, r->name, NULL) == FAILURE) | |
6de9cd9a DN |
3499 | return MATCH_ERROR; |
3500 | ||
3501 | *result = r; | |
3502 | ||
3503 | return MATCH_YES; | |
3504 | } | |
3505 | ||
3506 | ||
a8b3b0b6 CR |
3507 | /* Match a function suffix, which could be a combination of a result |
3508 | clause and BIND(C), either one, or neither. The draft does not | |
3509 | require them to come in a specific order. */ | |
3510 | ||
3511 | match | |
3512 | gfc_match_suffix (gfc_symbol *sym, gfc_symbol **result) | |
3513 | { | |
3514 | match is_bind_c; /* Found bind(c). */ | |
3515 | match is_result; /* Found result clause. */ | |
3516 | match found_match; /* Status of whether we've found a good match. */ | |
3517 | int peek_char; /* Character we're going to peek at. */ | |
3518 | ||
3519 | /* Initialize to having found nothing. */ | |
3520 | found_match = MATCH_NO; | |
3521 | is_bind_c = MATCH_NO; | |
3522 | is_result = MATCH_NO; | |
3523 | ||
3524 | /* Get the next char to narrow between result and bind(c). */ | |
3525 | gfc_gobble_whitespace (); | |
3526 | peek_char = gfc_peek_char (); | |
3527 | ||
3528 | switch (peek_char) | |
3529 | { | |
3530 | case 'r': | |
3531 | /* Look for result clause. */ | |
3532 | is_result = match_result (sym, result); | |
3533 | if (is_result == MATCH_YES) | |
3534 | { | |
3535 | /* Now see if there is a bind(c) after it. */ | |
3536 | is_bind_c = gfc_match_bind_c (sym); | |
3537 | /* We've found the result clause and possibly bind(c). */ | |
3538 | found_match = MATCH_YES; | |
3539 | } | |
3540 | else | |
3541 | /* This should only be MATCH_ERROR. */ | |
3542 | found_match = is_result; | |
3543 | break; | |
3544 | case 'b': | |
3545 | /* Look for bind(c) first. */ | |
3546 | is_bind_c = gfc_match_bind_c (sym); | |
3547 | if (is_bind_c == MATCH_YES) | |
3548 | { | |
3549 | /* Now see if a result clause followed it. */ | |
3550 | is_result = match_result (sym, result); | |
3551 | found_match = MATCH_YES; | |
3552 | } | |
3553 | else | |
3554 | { | |
3555 | /* Should only be a MATCH_ERROR if we get here after seeing 'b'. */ | |
3556 | found_match = MATCH_ERROR; | |
3557 | } | |
3558 | break; | |
3559 | default: | |
3560 | gfc_error ("Unexpected junk after function declaration at %C"); | |
3561 | found_match = MATCH_ERROR; | |
3562 | break; | |
3563 | } | |
3564 | ||
3565 | if (is_result == MATCH_ERROR || is_bind_c == MATCH_ERROR) | |
3566 | { | |
3567 | gfc_error ("Error in function suffix at %C"); | |
3568 | return MATCH_ERROR; | |
3569 | } | |
3570 | ||
3571 | if (is_bind_c == MATCH_YES) | |
3572 | if (gfc_add_is_bind_c (&(sym->attr), sym->name, &gfc_current_locus, 1) | |
3573 | == FAILURE) | |
3574 | return MATCH_ERROR; | |
3575 | ||
3576 | return found_match; | |
3577 | } | |
3578 | ||
3579 | ||
6de9cd9a DN |
3580 | /* Match a function declaration. */ |
3581 | ||
3582 | match | |
3583 | gfc_match_function_decl (void) | |
3584 | { | |
3585 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
3586 | gfc_symbol *sym, *result; | |
3587 | locus old_loc; | |
3588 | match m; | |
a8b3b0b6 CR |
3589 | match suffix_match; |
3590 | match found_match; /* Status returned by match func. */ | |
6de9cd9a DN |
3591 | |
3592 | if (gfc_current_state () != COMP_NONE | |
3593 | && gfc_current_state () != COMP_INTERFACE | |
3594 | && gfc_current_state () != COMP_CONTAINS) | |
3595 | return MATCH_NO; | |
3596 | ||
3597 | gfc_clear_ts (¤t_ts); | |
3598 | ||
63645982 | 3599 | old_loc = gfc_current_locus; |
6de9cd9a DN |
3600 | |
3601 | m = match_prefix (¤t_ts); | |
3602 | if (m != MATCH_YES) | |
3603 | { | |
63645982 | 3604 | gfc_current_locus = old_loc; |
6de9cd9a DN |
3605 | return m; |
3606 | } | |
3607 | ||
3608 | if (gfc_match ("function% %n", name) != MATCH_YES) | |
3609 | { | |
63645982 | 3610 | gfc_current_locus = old_loc; |
6de9cd9a DN |
3611 | return MATCH_NO; |
3612 | } | |
1a492601 | 3613 | if (get_proc_name (name, &sym, false)) |
6de9cd9a DN |
3614 | return MATCH_ERROR; |
3615 | gfc_new_block = sym; | |
3616 | ||
3617 | m = gfc_match_formal_arglist (sym, 0, 0); | |
3618 | if (m == MATCH_NO) | |
2b9a33ae TS |
3619 | { |
3620 | gfc_error ("Expected formal argument list in function " | |
636dff67 | 3621 | "definition at %C"); |
2b9a33ae TS |
3622 | m = MATCH_ERROR; |
3623 | goto cleanup; | |
3624 | } | |
6de9cd9a DN |
3625 | else if (m == MATCH_ERROR) |
3626 | goto cleanup; | |
3627 | ||
3628 | result = NULL; | |
3629 | ||
a8b3b0b6 CR |
3630 | /* According to the draft, the bind(c) and result clause can |
3631 | come in either order after the formal_arg_list (i.e., either | |
3632 | can be first, both can exist together or by themselves or neither | |
3633 | one). Therefore, the match_result can't match the end of the | |
3634 | string, and check for the bind(c) or result clause in either order. */ | |
3635 | found_match = gfc_match_eos (); | |
3636 | ||
3637 | /* Make sure that it isn't already declared as BIND(C). If it is, it | |
3638 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
3639 | not allowed for procedures. */ | |
3640 | if (sym->attr.is_bind_c == 1) | |
3641 | { | |
3642 | sym->attr.is_bind_c = 0; | |
3643 | if (sym->old_symbol != NULL) | |
3644 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
3645 | "variables or common blocks", | |
3646 | &(sym->old_symbol->declared_at)); | |
3647 | else | |
3648 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
3649 | "variables or common blocks", &gfc_current_locus); | |
6de9cd9a DN |
3650 | } |
3651 | ||
a8b3b0b6 | 3652 | if (found_match != MATCH_YES) |
6de9cd9a | 3653 | { |
a8b3b0b6 CR |
3654 | /* If we haven't found the end-of-statement, look for a suffix. */ |
3655 | suffix_match = gfc_match_suffix (sym, &result); | |
3656 | if (suffix_match == MATCH_YES) | |
3657 | /* Need to get the eos now. */ | |
3658 | found_match = gfc_match_eos (); | |
3659 | else | |
3660 | found_match = suffix_match; | |
6de9cd9a DN |
3661 | } |
3662 | ||
a8b3b0b6 CR |
3663 | if(found_match != MATCH_YES) |
3664 | m = MATCH_ERROR; | |
6de9cd9a DN |
3665 | else |
3666 | { | |
a8b3b0b6 CR |
3667 | /* Make changes to the symbol. */ |
3668 | m = MATCH_ERROR; | |
3669 | ||
3670 | if (gfc_add_function (&sym->attr, sym->name, NULL) == FAILURE) | |
3671 | goto cleanup; | |
3672 | ||
3673 | if (gfc_missing_attr (&sym->attr, NULL) == FAILURE | |
3674 | || copy_prefix (&sym->attr, &sym->declared_at) == FAILURE) | |
3675 | goto cleanup; | |
6de9cd9a | 3676 | |
a8b3b0b6 CR |
3677 | if (current_ts.type != BT_UNKNOWN && sym->ts.type != BT_UNKNOWN |
3678 | && !sym->attr.implicit_type) | |
3679 | { | |
3680 | gfc_error ("Function '%s' at %C already has a type of %s", name, | |
3681 | gfc_basic_typename (sym->ts.type)); | |
3682 | goto cleanup; | |
3683 | } | |
3684 | ||
3685 | if (result == NULL) | |
3686 | { | |
3687 | sym->ts = current_ts; | |
3688 | sym->result = sym; | |
3689 | } | |
3690 | else | |
3691 | { | |
3692 | result->ts = current_ts; | |
3693 | sym->result = result; | |
3694 | } | |
3695 | ||
3696 | return MATCH_YES; | |
3697 | } | |
6de9cd9a DN |
3698 | |
3699 | cleanup: | |
63645982 | 3700 | gfc_current_locus = old_loc; |
6de9cd9a DN |
3701 | return m; |
3702 | } | |
3703 | ||
636dff67 SK |
3704 | |
3705 | /* This is mostly a copy of parse.c(add_global_procedure) but modified to | |
3706 | pass the name of the entry, rather than the gfc_current_block name, and | |
3707 | to return false upon finding an existing global entry. */ | |
68ea355b PT |
3708 | |
3709 | static bool | |
636dff67 | 3710 | add_global_entry (const char *name, int sub) |
68ea355b PT |
3711 | { |
3712 | gfc_gsymbol *s; | |
3713 | ||
3714 | s = gfc_get_gsymbol(name); | |
3715 | ||
3716 | if (s->defined | |
636dff67 SK |
3717 | || (s->type != GSYM_UNKNOWN |
3718 | && s->type != (sub ? GSYM_SUBROUTINE : GSYM_FUNCTION))) | |
68ea355b PT |
3719 | global_used(s, NULL); |
3720 | else | |
3721 | { | |
3722 | s->type = sub ? GSYM_SUBROUTINE : GSYM_FUNCTION; | |
3723 | s->where = gfc_current_locus; | |
3724 | s->defined = 1; | |
3725 | return true; | |
3726 | } | |
3727 | return false; | |
3728 | } | |
6de9cd9a | 3729 | |
636dff67 | 3730 | |
6de9cd9a DN |
3731 | /* Match an ENTRY statement. */ |
3732 | ||
3733 | match | |
3734 | gfc_match_entry (void) | |
3735 | { | |
3d79abbd PB |
3736 | gfc_symbol *proc; |
3737 | gfc_symbol *result; | |
3738 | gfc_symbol *entry; | |
6de9cd9a DN |
3739 | char name[GFC_MAX_SYMBOL_LEN + 1]; |
3740 | gfc_compile_state state; | |
3741 | match m; | |
3d79abbd | 3742 | gfc_entry_list *el; |
c96cfa49 | 3743 | locus old_loc; |
1a492601 | 3744 | bool module_procedure; |
6de9cd9a DN |
3745 | |
3746 | m = gfc_match_name (name); | |
3747 | if (m != MATCH_YES) | |
3748 | return m; | |
3749 | ||
3d79abbd | 3750 | state = gfc_current_state (); |
4c93c95a | 3751 | if (state != COMP_SUBROUTINE && state != COMP_FUNCTION) |
3d79abbd | 3752 | { |
4c93c95a FXC |
3753 | switch (state) |
3754 | { | |
3755 | case COMP_PROGRAM: | |
3756 | gfc_error ("ENTRY statement at %C cannot appear within a PROGRAM"); | |
3757 | break; | |
3758 | case COMP_MODULE: | |
3759 | gfc_error ("ENTRY statement at %C cannot appear within a MODULE"); | |
3760 | break; | |
3761 | case COMP_BLOCK_DATA: | |
636dff67 SK |
3762 | gfc_error ("ENTRY statement at %C cannot appear within " |
3763 | "a BLOCK DATA"); | |
4c93c95a FXC |
3764 | break; |
3765 | case COMP_INTERFACE: | |
636dff67 SK |
3766 | gfc_error ("ENTRY statement at %C cannot appear within " |
3767 | "an INTERFACE"); | |
4c93c95a FXC |
3768 | break; |
3769 | case COMP_DERIVED: | |
636dff67 SK |
3770 | gfc_error ("ENTRY statement at %C cannot appear within " |
3771 | "a DERIVED TYPE block"); | |
4c93c95a FXC |
3772 | break; |
3773 | case COMP_IF: | |
636dff67 SK |
3774 | gfc_error ("ENTRY statement at %C cannot appear within " |
3775 | "an IF-THEN block"); | |
4c93c95a FXC |
3776 | break; |
3777 | case COMP_DO: | |
636dff67 SK |
3778 | gfc_error ("ENTRY statement at %C cannot appear within " |
3779 | "a DO block"); | |
4c93c95a FXC |
3780 | break; |
3781 | case COMP_SELECT: | |
636dff67 SK |
3782 | gfc_error ("ENTRY statement at %C cannot appear within " |
3783 | "a SELECT block"); | |
4c93c95a FXC |
3784 | break; |
3785 | case COMP_FORALL: | |
636dff67 SK |
3786 | gfc_error ("ENTRY statement at %C cannot appear within " |
3787 | "a FORALL block"); | |
4c93c95a FXC |
3788 | break; |
3789 | case COMP_WHERE: | |
636dff67 SK |
3790 | gfc_error ("ENTRY statement at %C cannot appear within " |
3791 | "a WHERE block"); | |
4c93c95a FXC |
3792 | break; |
3793 | case COMP_CONTAINS: | |
636dff67 SK |
3794 | gfc_error ("ENTRY statement at %C cannot appear within " |
3795 | "a contained subprogram"); | |
4c93c95a FXC |
3796 | break; |
3797 | default: | |
3798 | gfc_internal_error ("gfc_match_entry(): Bad state"); | |
3799 | } | |
3d79abbd PB |
3800 | return MATCH_ERROR; |
3801 | } | |
3802 | ||
1a492601 | 3803 | module_procedure = gfc_current_ns->parent != NULL |
636dff67 SK |
3804 | && gfc_current_ns->parent->proc_name |
3805 | && gfc_current_ns->parent->proc_name->attr.flavor | |
3806 | == FL_MODULE; | |
1a492601 | 3807 | |
3d79abbd PB |
3808 | if (gfc_current_ns->parent != NULL |
3809 | && gfc_current_ns->parent->proc_name | |
1a492601 | 3810 | && !module_procedure) |
3d79abbd PB |
3811 | { |
3812 | gfc_error("ENTRY statement at %C cannot appear in a " | |
3813 | "contained procedure"); | |
3814 | return MATCH_ERROR; | |
3815 | } | |
3816 | ||
1a492601 PT |
3817 | /* Module function entries need special care in get_proc_name |
3818 | because previous references within the function will have | |
3819 | created symbols attached to the current namespace. */ | |
3820 | if (get_proc_name (name, &entry, | |
3821 | gfc_current_ns->parent != NULL | |
3822 | && module_procedure | |
3823 | && gfc_current_ns->proc_name->attr.function)) | |
6de9cd9a DN |
3824 | return MATCH_ERROR; |
3825 | ||
3d79abbd PB |
3826 | proc = gfc_current_block (); |
3827 | ||
3828 | if (state == COMP_SUBROUTINE) | |
6de9cd9a | 3829 | { |
231b2fcc | 3830 | /* An entry in a subroutine. */ |
68ea355b PT |
3831 | if (!add_global_entry (name, 1)) |
3832 | return MATCH_ERROR; | |
3833 | ||
6de9cd9a DN |
3834 | m = gfc_match_formal_arglist (entry, 0, 1); |
3835 | if (m != MATCH_YES) | |
3836 | return MATCH_ERROR; | |
3837 | ||
231b2fcc TS |
3838 | if (gfc_add_entry (&entry->attr, entry->name, NULL) == FAILURE |
3839 | || gfc_add_subroutine (&entry->attr, entry->name, NULL) == FAILURE) | |
6de9cd9a | 3840 | return MATCH_ERROR; |
3d79abbd PB |
3841 | } |
3842 | else | |
3843 | { | |
c96cfa49 | 3844 | /* An entry in a function. |
636dff67 SK |
3845 | We need to take special care because writing |
3846 | ENTRY f() | |
3847 | as | |
3848 | ENTRY f | |
3849 | is allowed, whereas | |
3850 | ENTRY f() RESULT (r) | |
3851 | can't be written as | |
3852 | ENTRY f RESULT (r). */ | |
68ea355b PT |
3853 | if (!add_global_entry (name, 0)) |
3854 | return MATCH_ERROR; | |
3855 | ||
c96cfa49 TS |
3856 | old_loc = gfc_current_locus; |
3857 | if (gfc_match_eos () == MATCH_YES) | |
3858 | { | |
3859 | gfc_current_locus = old_loc; | |
3860 | /* Match the empty argument list, and add the interface to | |
3861 | the symbol. */ | |
3862 | m = gfc_match_formal_arglist (entry, 0, 1); | |
3863 | } | |
3864 | else | |
3865 | m = gfc_match_formal_arglist (entry, 0, 0); | |
3866 | ||
6de9cd9a DN |
3867 | if (m != MATCH_YES) |
3868 | return MATCH_ERROR; | |
3869 | ||
6de9cd9a DN |
3870 | result = NULL; |
3871 | ||
3872 | if (gfc_match_eos () == MATCH_YES) | |
3873 | { | |
231b2fcc TS |
3874 | if (gfc_add_entry (&entry->attr, entry->name, NULL) == FAILURE |
3875 | || gfc_add_function (&entry->attr, entry->name, NULL) == FAILURE) | |
6de9cd9a DN |
3876 | return MATCH_ERROR; |
3877 | ||
d198b59a | 3878 | entry->result = entry; |
6de9cd9a DN |
3879 | } |
3880 | else | |
3881 | { | |
3d79abbd | 3882 | m = match_result (proc, &result); |
6de9cd9a DN |
3883 | if (m == MATCH_NO) |
3884 | gfc_syntax_error (ST_ENTRY); | |
3885 | if (m != MATCH_YES) | |
3886 | return MATCH_ERROR; | |
3887 | ||
231b2fcc TS |
3888 | if (gfc_add_result (&result->attr, result->name, NULL) == FAILURE |
3889 | || gfc_add_entry (&entry->attr, result->name, NULL) == FAILURE | |
636dff67 SK |
3890 | || gfc_add_function (&entry->attr, result->name, NULL) |
3891 | == FAILURE) | |
6de9cd9a | 3892 | return MATCH_ERROR; |
d198b59a JJ |
3893 | |
3894 | entry->result = result; | |
6de9cd9a | 3895 | } |
6de9cd9a DN |
3896 | } |
3897 | ||
3898 | if (gfc_match_eos () != MATCH_YES) | |
3899 | { | |
3900 | gfc_syntax_error (ST_ENTRY); | |
3901 | return MATCH_ERROR; | |
3902 | } | |
3903 | ||
3d79abbd PB |
3904 | entry->attr.recursive = proc->attr.recursive; |
3905 | entry->attr.elemental = proc->attr.elemental; | |
3906 | entry->attr.pure = proc->attr.pure; | |
6de9cd9a | 3907 | |
3d79abbd PB |
3908 | el = gfc_get_entry_list (); |
3909 | el->sym = entry; | |
3910 | el->next = gfc_current_ns->entries; | |
3911 | gfc_current_ns->entries = el; | |
3912 | if (el->next) | |
3913 | el->id = el->next->id + 1; | |
3914 | else | |
3915 | el->id = 1; | |
6de9cd9a | 3916 | |
3d79abbd PB |
3917 | new_st.op = EXEC_ENTRY; |
3918 | new_st.ext.entry = el; | |
3919 | ||
3920 | return MATCH_YES; | |
6de9cd9a DN |
3921 | } |
3922 | ||
3923 | ||
3924 | /* Match a subroutine statement, including optional prefixes. */ | |
3925 | ||
3926 | match | |
3927 | gfc_match_subroutine (void) | |
3928 | { | |
3929 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
3930 | gfc_symbol *sym; | |
3931 | match m; | |
a8b3b0b6 CR |
3932 | match is_bind_c; |
3933 | char peek_char; | |
6de9cd9a DN |
3934 | |
3935 | if (gfc_current_state () != COMP_NONE | |
3936 | && gfc_current_state () != COMP_INTERFACE | |
3937 | && gfc_current_state () != COMP_CONTAINS) | |
3938 | return MATCH_NO; | |
3939 | ||
3940 | m = match_prefix (NULL); | |
3941 | if (m != MATCH_YES) | |
3942 | return m; | |
3943 | ||
3944 | m = gfc_match ("subroutine% %n", name); | |
3945 | if (m != MATCH_YES) | |
3946 | return m; | |
3947 | ||
1a492601 | 3948 | if (get_proc_name (name, &sym, false)) |
6de9cd9a DN |
3949 | return MATCH_ERROR; |
3950 | gfc_new_block = sym; | |
3951 | ||
a8b3b0b6 CR |
3952 | /* Check what next non-whitespace character is so we can tell if there |
3953 | where the required parens if we have a BIND(C). */ | |
3954 | gfc_gobble_whitespace (); | |
3955 | peek_char = gfc_peek_char (); | |
3956 | ||
231b2fcc | 3957 | if (gfc_add_subroutine (&sym->attr, sym->name, NULL) == FAILURE) |
6de9cd9a DN |
3958 | return MATCH_ERROR; |
3959 | ||
3960 | if (gfc_match_formal_arglist (sym, 0, 1) != MATCH_YES) | |
3961 | return MATCH_ERROR; | |
3962 | ||
a8b3b0b6 CR |
3963 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
3964 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
3965 | not allowed for procedures. */ | |
3966 | if (sym->attr.is_bind_c == 1) | |
3967 | { | |
3968 | sym->attr.is_bind_c = 0; | |
3969 | if (sym->old_symbol != NULL) | |
3970 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
3971 | "variables or common blocks", | |
3972 | &(sym->old_symbol->declared_at)); | |
3973 | else | |
3974 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
3975 | "variables or common blocks", &gfc_current_locus); | |
3976 | } | |
3977 | ||
3978 | /* Here, we are just checking if it has the bind(c) attribute, and if | |
3979 | so, then we need to make sure it's all correct. If it doesn't, | |
3980 | we still need to continue matching the rest of the subroutine line. */ | |
3981 | is_bind_c = gfc_match_bind_c (sym); | |
3982 | if (is_bind_c == MATCH_ERROR) | |
3983 | { | |
3984 | /* There was an attempt at the bind(c), but it was wrong. An | |
3985 | error message should have been printed w/in the gfc_match_bind_c | |
3986 | so here we'll just return the MATCH_ERROR. */ | |
3987 | return MATCH_ERROR; | |
3988 | } | |
3989 | ||
3990 | if (is_bind_c == MATCH_YES) | |
3991 | { | |
3992 | if (peek_char != '(') | |
3993 | { | |
3994 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
3995 | return MATCH_ERROR; | |
3996 | } | |
3997 | if (gfc_add_is_bind_c (&(sym->attr), sym->name, &(sym->declared_at), 1) | |
3998 | == FAILURE) | |
3999 | return MATCH_ERROR; | |
4000 | } | |
4001 | ||
6de9cd9a DN |
4002 | if (gfc_match_eos () != MATCH_YES) |
4003 | { | |
4004 | gfc_syntax_error (ST_SUBROUTINE); | |
4005 | return MATCH_ERROR; | |
4006 | } | |
4007 | ||
4008 | if (copy_prefix (&sym->attr, &sym->declared_at) == FAILURE) | |
4009 | return MATCH_ERROR; | |
4010 | ||
4011 | return MATCH_YES; | |
4012 | } | |
4013 | ||
4014 | ||
a8b3b0b6 CR |
4015 | /* Match a BIND(C) specifier, with the optional 'name=' specifier if |
4016 | given, and set the binding label in either the given symbol (if not | |
4017 | NULL), or in the current_ts. The symbol may be NULL becuase we may | |
4018 | encounter the BIND(C) before the declaration itself. Return | |
4019 | MATCH_NO if what we're looking at isn't a BIND(C) specifier, | |
4020 | MATCH_ERROR if it is a BIND(C) clause but an error was encountered, | |
4021 | or MATCH_YES if the specifier was correct and the binding label and | |
4022 | bind(c) fields were set correctly for the given symbol or the | |
4023 | current_ts. */ | |
4024 | ||
4025 | match | |
4026 | gfc_match_bind_c (gfc_symbol *sym) | |
4027 | { | |
4028 | /* binding label, if exists */ | |
4029 | char binding_label[GFC_MAX_SYMBOL_LEN + 1]; | |
4030 | match double_quote; | |
4031 | match single_quote; | |
4032 | int has_name_equals = 0; | |
4033 | ||
4034 | /* Initialize the flag that specifies whether we encountered a NAME= | |
4035 | specifier or not. */ | |
4036 | has_name_equals = 0; | |
4037 | ||
4038 | /* Init the first char to nil so we can catch if we don't have | |
4039 | the label (name attr) or the symbol name yet. */ | |
4040 | binding_label[0] = '\0'; | |
4041 | ||
4042 | /* This much we have to be able to match, in this order, if | |
4043 | there is a bind(c) label. */ | |
4044 | if (gfc_match (" bind ( c ") != MATCH_YES) | |
4045 | return MATCH_NO; | |
4046 | ||
4047 | /* Now see if there is a binding label, or if we've reached the | |
4048 | end of the bind(c) attribute without one. */ | |
4049 | if (gfc_match_char (',') == MATCH_YES) | |
4050 | { | |
4051 | if (gfc_match (" name = ") != MATCH_YES) | |
4052 | { | |
4053 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
4054 | "at %C"); | |
4055 | /* should give an error message here */ | |
4056 | return MATCH_ERROR; | |
4057 | } | |
4058 | ||
4059 | has_name_equals = 1; | |
4060 | ||
4061 | /* Get the opening quote. */ | |
4062 | double_quote = MATCH_YES; | |
4063 | single_quote = MATCH_YES; | |
4064 | double_quote = gfc_match_char ('"'); | |
4065 | if (double_quote != MATCH_YES) | |
4066 | single_quote = gfc_match_char ('\''); | |
4067 | if (double_quote != MATCH_YES && single_quote != MATCH_YES) | |
4068 | { | |
4069 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
4070 | "at %C"); | |
4071 | return MATCH_ERROR; | |
4072 | } | |
4073 | ||
4074 | /* Grab the binding label, using functions that will not lower | |
4075 | case the names automatically. */ | |
4076 | if (gfc_match_name_C (binding_label) != MATCH_YES) | |
4077 | return MATCH_ERROR; | |
4078 | ||
4079 | /* Get the closing quotation. */ | |
4080 | if (double_quote == MATCH_YES) | |
4081 | { | |
4082 | if (gfc_match_char ('"') != MATCH_YES) | |
4083 | { | |
4084 | gfc_error ("Missing closing quote '\"' for binding label at %C"); | |
4085 | /* User started string with '"' so looked to match it. */ | |
4086 | return MATCH_ERROR; | |
4087 | } | |
4088 | } | |
4089 | else | |
4090 | { | |
4091 | if (gfc_match_char ('\'') != MATCH_YES) | |
4092 | { | |
4093 | gfc_error ("Missing closing quote '\'' for binding label at %C"); | |
4094 | /* User started string with "'" char. */ | |
4095 | return MATCH_ERROR; | |
4096 | } | |
4097 | } | |
4098 | } | |
4099 | ||
4100 | /* Get the required right paren. */ | |
4101 | if (gfc_match_char (')') != MATCH_YES) | |
4102 | { | |
4103 | gfc_error ("Missing closing paren for binding label at %C"); | |
4104 | return MATCH_ERROR; | |
4105 | } | |
4106 | ||
4107 | /* Save the binding label to the symbol. If sym is null, we're | |
4108 | probably matching the typespec attributes of a declaration and | |
4109 | haven't gotten the name yet, and therefore, no symbol yet. */ | |
4110 | if (binding_label[0] != '\0') | |
4111 | { | |
4112 | if (sym != NULL) | |
4113 | { | |
4114 | strncpy (sym->binding_label, binding_label, | |
4115 | strlen (binding_label)+1); | |
4116 | } | |
4117 | else | |
4118 | strncpy (curr_binding_label, binding_label, | |
4119 | strlen (binding_label) + 1); | |
4120 | } | |
4121 | else | |
4122 | { | |
4123 | /* No binding label, but if symbol isn't null, we | |
4124 | can set the label for it here. */ | |
4125 | /* TODO: If the name= was given and no binding label (name=""), we simply | |
4126 | will let fortran mangle the symbol name as it usually would. | |
4127 | However, this could still let C call it if the user looked up the | |
4128 | symbol in the object file. Should the name set during mangling in | |
4129 | trans-decl.c be marked with characters that are invalid for C to | |
4130 | prevent this? */ | |
4131 | if (sym != NULL && sym->name != NULL && has_name_equals == 0) | |
4132 | strncpy (sym->binding_label, sym->name, strlen (sym->name) + 1); | |
4133 | } | |
4134 | ||
4135 | return MATCH_YES; | |
4136 | } | |
4137 | ||
4138 | ||
1f2959f0 | 4139 | /* Return nonzero if we're currently compiling a contained procedure. */ |
ddc9ce91 TS |
4140 | |
4141 | static int | |
4142 | contained_procedure (void) | |
4143 | { | |
4144 | gfc_state_data *s; | |
4145 | ||
4146 | for (s=gfc_state_stack; s; s=s->previous) | |
4147 | if ((s->state == COMP_SUBROUTINE || s->state == COMP_FUNCTION) | |
636dff67 | 4148 | && s->previous != NULL && s->previous->state == COMP_CONTAINS) |
ddc9ce91 TS |
4149 | return 1; |
4150 | ||
4151 | return 0; | |
4152 | } | |
4153 | ||
d51347f9 | 4154 | /* Set the kind of each enumerator. The kind is selected such that it is |
25d8f0a2 TS |
4155 | interoperable with the corresponding C enumeration type, making |
4156 | sure that -fshort-enums is honored. */ | |
4157 | ||
4158 | static void | |
4159 | set_enum_kind(void) | |
4160 | { | |
4161 | enumerator_history *current_history = NULL; | |
4162 | int kind; | |
4163 | int i; | |
4164 | ||
4165 | if (max_enum == NULL || enum_history == NULL) | |
4166 | return; | |
4167 | ||
4168 | if (!gfc_option.fshort_enums) | |
d51347f9 TB |
4169 | return; |
4170 | ||
25d8f0a2 TS |
4171 | i = 0; |
4172 | do | |
4173 | { | |
4174 | kind = gfc_integer_kinds[i++].kind; | |
4175 | } | |
d51347f9 | 4176 | while (kind < gfc_c_int_kind |
25d8f0a2 TS |
4177 | && gfc_check_integer_range (max_enum->initializer->value.integer, |
4178 | kind) != ARITH_OK); | |
4179 | ||
4180 | current_history = enum_history; | |
4181 | while (current_history != NULL) | |
4182 | { | |
4183 | current_history->sym->ts.kind = kind; | |
4184 | current_history = current_history->next; | |
4185 | } | |
4186 | } | |
4187 | ||
636dff67 | 4188 | |
6de9cd9a DN |
4189 | /* Match any of the various end-block statements. Returns the type of |
4190 | END to the caller. The END INTERFACE, END IF, END DO and END | |
4191 | SELECT statements cannot be replaced by a single END statement. */ | |
4192 | ||
4193 | match | |
636dff67 | 4194 | gfc_match_end (gfc_statement *st) |
6de9cd9a DN |
4195 | { |
4196 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4197 | gfc_compile_state state; | |
4198 | locus old_loc; | |
4199 | const char *block_name; | |
4200 | const char *target; | |
ddc9ce91 | 4201 | int eos_ok; |
6de9cd9a DN |
4202 | match m; |
4203 | ||
63645982 | 4204 | old_loc = gfc_current_locus; |
6de9cd9a DN |
4205 | if (gfc_match ("end") != MATCH_YES) |
4206 | return MATCH_NO; | |
4207 | ||
4208 | state = gfc_current_state (); | |
636dff67 SK |
4209 | block_name = gfc_current_block () == NULL |
4210 | ? NULL : gfc_current_block ()->name; | |
6de9cd9a DN |
4211 | |
4212 | if (state == COMP_CONTAINS) | |
4213 | { | |
4214 | state = gfc_state_stack->previous->state; | |
636dff67 SK |
4215 | block_name = gfc_state_stack->previous->sym == NULL |
4216 | ? NULL : gfc_state_stack->previous->sym->name; | |
6de9cd9a DN |
4217 | } |
4218 | ||
4219 | switch (state) | |
4220 | { | |
4221 | case COMP_NONE: | |
4222 | case COMP_PROGRAM: | |
4223 | *st = ST_END_PROGRAM; | |
4224 | target = " program"; | |
ddc9ce91 | 4225 | eos_ok = 1; |
6de9cd9a DN |
4226 | break; |
4227 | ||
4228 | case COMP_SUBROUTINE: | |
4229 | *st = ST_END_SUBROUTINE; | |
4230 | target = " subroutine"; | |
ddc9ce91 | 4231 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
4232 | break; |
4233 | ||
4234 | case COMP_FUNCTION: | |
4235 | *st = ST_END_FUNCTION; | |
4236 | target = " function"; | |
ddc9ce91 | 4237 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
4238 | break; |
4239 | ||
4240 | case COMP_BLOCK_DATA: | |
4241 | *st = ST_END_BLOCK_DATA; | |
4242 | target = " block data"; | |
ddc9ce91 | 4243 | eos_ok = 1; |
6de9cd9a DN |
4244 | break; |
4245 | ||
4246 | case COMP_MODULE: | |
4247 | *st = ST_END_MODULE; | |
4248 | target = " module"; | |
ddc9ce91 | 4249 | eos_ok = 1; |
6de9cd9a DN |
4250 | break; |
4251 | ||
4252 | case COMP_INTERFACE: | |
4253 | *st = ST_END_INTERFACE; | |
4254 | target = " interface"; | |
ddc9ce91 | 4255 | eos_ok = 0; |
6de9cd9a DN |
4256 | break; |
4257 | ||
4258 | case COMP_DERIVED: | |
4259 | *st = ST_END_TYPE; | |
4260 | target = " type"; | |
ddc9ce91 | 4261 | eos_ok = 0; |
6de9cd9a DN |
4262 | break; |
4263 | ||
4264 | case COMP_IF: | |
4265 | *st = ST_ENDIF; | |
4266 | target = " if"; | |
ddc9ce91 | 4267 | eos_ok = 0; |
6de9cd9a DN |
4268 | break; |
4269 | ||
4270 | case COMP_DO: | |
4271 | *st = ST_ENDDO; | |
4272 | target = " do"; | |
ddc9ce91 | 4273 | eos_ok = 0; |
6de9cd9a DN |
4274 | break; |
4275 | ||
4276 | case COMP_SELECT: | |
4277 | *st = ST_END_SELECT; | |
4278 | target = " select"; | |
ddc9ce91 | 4279 | eos_ok = 0; |
6de9cd9a DN |
4280 | break; |
4281 | ||
4282 | case COMP_FORALL: | |
4283 | *st = ST_END_FORALL; | |
4284 | target = " forall"; | |
ddc9ce91 | 4285 | eos_ok = 0; |
6de9cd9a DN |
4286 | break; |
4287 | ||
4288 | case COMP_WHERE: | |
4289 | *st = ST_END_WHERE; | |
4290 | target = " where"; | |
ddc9ce91 | 4291 | eos_ok = 0; |
6de9cd9a DN |
4292 | break; |
4293 | ||
25d8f0a2 TS |
4294 | case COMP_ENUM: |
4295 | *st = ST_END_ENUM; | |
4296 | target = " enum"; | |
4297 | eos_ok = 0; | |
4298 | last_initializer = NULL; | |
4299 | set_enum_kind (); | |
4300 | gfc_free_enum_history (); | |
4301 | break; | |
4302 | ||
6de9cd9a DN |
4303 | default: |
4304 | gfc_error ("Unexpected END statement at %C"); | |
4305 | goto cleanup; | |
4306 | } | |
4307 | ||
4308 | if (gfc_match_eos () == MATCH_YES) | |
4309 | { | |
ddc9ce91 | 4310 | if (!eos_ok) |
6de9cd9a | 4311 | { |
66e4ab31 | 4312 | /* We would have required END [something]. */ |
59ce85b5 TS |
4313 | gfc_error ("%s statement expected at %L", |
4314 | gfc_ascii_statement (*st), &old_loc); | |
6de9cd9a DN |
4315 | goto cleanup; |
4316 | } | |
4317 | ||
4318 | return MATCH_YES; | |
4319 | } | |
4320 | ||
4321 | /* Verify that we've got the sort of end-block that we're expecting. */ | |
4322 | if (gfc_match (target) != MATCH_YES) | |
4323 | { | |
4324 | gfc_error ("Expecting %s statement at %C", gfc_ascii_statement (*st)); | |
4325 | goto cleanup; | |
4326 | } | |
4327 | ||
4328 | /* If we're at the end, make sure a block name wasn't required. */ | |
4329 | if (gfc_match_eos () == MATCH_YES) | |
4330 | { | |
4331 | ||
690af379 TS |
4332 | if (*st != ST_ENDDO && *st != ST_ENDIF && *st != ST_END_SELECT |
4333 | && *st != ST_END_FORALL && *st != ST_END_WHERE) | |
6de9cd9a DN |
4334 | return MATCH_YES; |
4335 | ||
4336 | if (gfc_current_block () == NULL) | |
4337 | return MATCH_YES; | |
4338 | ||
4339 | gfc_error ("Expected block name of '%s' in %s statement at %C", | |
4340 | block_name, gfc_ascii_statement (*st)); | |
4341 | ||
4342 | return MATCH_ERROR; | |
4343 | } | |
4344 | ||
4345 | /* END INTERFACE has a special handler for its several possible endings. */ | |
4346 | if (*st == ST_END_INTERFACE) | |
4347 | return gfc_match_end_interface (); | |
4348 | ||
66e4ab31 SK |
4349 | /* We haven't hit the end of statement, so what is left must be an |
4350 | end-name. */ | |
6de9cd9a DN |
4351 | m = gfc_match_space (); |
4352 | if (m == MATCH_YES) | |
4353 | m = gfc_match_name (name); | |
4354 | ||
4355 | if (m == MATCH_NO) | |
4356 | gfc_error ("Expected terminating name at %C"); | |
4357 | if (m != MATCH_YES) | |
4358 | goto cleanup; | |
4359 | ||
4360 | if (block_name == NULL) | |
4361 | goto syntax; | |
4362 | ||
4363 | if (strcmp (name, block_name) != 0) | |
4364 | { | |
4365 | gfc_error ("Expected label '%s' for %s statement at %C", block_name, | |
4366 | gfc_ascii_statement (*st)); | |
4367 | goto cleanup; | |
4368 | } | |
4369 | ||
4370 | if (gfc_match_eos () == MATCH_YES) | |
4371 | return MATCH_YES; | |
4372 | ||
4373 | syntax: | |
4374 | gfc_syntax_error (*st); | |
4375 | ||
4376 | cleanup: | |
63645982 | 4377 | gfc_current_locus = old_loc; |
6de9cd9a DN |
4378 | return MATCH_ERROR; |
4379 | } | |
4380 | ||
4381 | ||
4382 | ||
4383 | /***************** Attribute declaration statements ****************/ | |
4384 | ||
4385 | /* Set the attribute of a single variable. */ | |
4386 | ||
4387 | static match | |
4388 | attr_decl1 (void) | |
4389 | { | |
4390 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4391 | gfc_array_spec *as; | |
4392 | gfc_symbol *sym; | |
4393 | locus var_locus; | |
4394 | match m; | |
4395 | ||
4396 | as = NULL; | |
4397 | ||
4398 | m = gfc_match_name (name); | |
4399 | if (m != MATCH_YES) | |
4400 | goto cleanup; | |
4401 | ||
4402 | if (find_special (name, &sym)) | |
4403 | return MATCH_ERROR; | |
4404 | ||
63645982 | 4405 | var_locus = gfc_current_locus; |
6de9cd9a DN |
4406 | |
4407 | /* Deal with possible array specification for certain attributes. */ | |
4408 | if (current_attr.dimension | |
4409 | || current_attr.allocatable | |
4410 | || current_attr.pointer | |
4411 | || current_attr.target) | |
4412 | { | |
4413 | m = gfc_match_array_spec (&as); | |
4414 | if (m == MATCH_ERROR) | |
4415 | goto cleanup; | |
4416 | ||
4417 | if (current_attr.dimension && m == MATCH_NO) | |
4418 | { | |
636dff67 SK |
4419 | gfc_error ("Missing array specification at %L in DIMENSION " |
4420 | "statement", &var_locus); | |
6de9cd9a DN |
4421 | m = MATCH_ERROR; |
4422 | goto cleanup; | |
4423 | } | |
4424 | ||
4425 | if ((current_attr.allocatable || current_attr.pointer) | |
4426 | && (m == MATCH_YES) && (as->type != AS_DEFERRED)) | |
4427 | { | |
636dff67 | 4428 | gfc_error ("Array specification must be deferred at %L", &var_locus); |
6de9cd9a DN |
4429 | m = MATCH_ERROR; |
4430 | goto cleanup; | |
4431 | } | |
4432 | } | |
4433 | ||
636dff67 SK |
4434 | /* Update symbol table. DIMENSION attribute is set |
4435 | in gfc_set_array_spec(). */ | |
6de9cd9a DN |
4436 | if (current_attr.dimension == 0 |
4437 | && gfc_copy_attr (&sym->attr, ¤t_attr, NULL) == FAILURE) | |
4438 | { | |
4439 | m = MATCH_ERROR; | |
4440 | goto cleanup; | |
4441 | } | |
4442 | ||
4443 | if (gfc_set_array_spec (sym, as, &var_locus) == FAILURE) | |
4444 | { | |
4445 | m = MATCH_ERROR; | |
4446 | goto cleanup; | |
4447 | } | |
d51347f9 | 4448 | |
83d890b9 AL |
4449 | if (sym->attr.cray_pointee && sym->as != NULL) |
4450 | { | |
4451 | /* Fix the array spec. */ | |
4452 | m = gfc_mod_pointee_as (sym->as); | |
4453 | if (m == MATCH_ERROR) | |
4454 | goto cleanup; | |
4455 | } | |
6de9cd9a | 4456 | |
7114edca | 4457 | if (gfc_add_attribute (&sym->attr, &var_locus) == FAILURE) |
1902704e PT |
4458 | { |
4459 | m = MATCH_ERROR; | |
4460 | goto cleanup; | |
4461 | } | |
4462 | ||
6de9cd9a DN |
4463 | if ((current_attr.external || current_attr.intrinsic) |
4464 | && sym->attr.flavor != FL_PROCEDURE | |
231b2fcc | 4465 | && gfc_add_flavor (&sym->attr, FL_PROCEDURE, sym->name, NULL) == FAILURE) |
6de9cd9a DN |
4466 | { |
4467 | m = MATCH_ERROR; | |
4468 | goto cleanup; | |
4469 | } | |
4470 | ||
4471 | return MATCH_YES; | |
4472 | ||
4473 | cleanup: | |
4474 | gfc_free_array_spec (as); | |
4475 | return m; | |
4476 | } | |
4477 | ||
4478 | ||
4479 | /* Generic attribute declaration subroutine. Used for attributes that | |
4480 | just have a list of names. */ | |
4481 | ||
4482 | static match | |
4483 | attr_decl (void) | |
4484 | { | |
4485 | match m; | |
4486 | ||
4487 | /* Gobble the optional double colon, by simply ignoring the result | |
4488 | of gfc_match(). */ | |
4489 | gfc_match (" ::"); | |
4490 | ||
4491 | for (;;) | |
4492 | { | |
4493 | m = attr_decl1 (); | |
4494 | if (m != MATCH_YES) | |
4495 | break; | |
4496 | ||
4497 | if (gfc_match_eos () == MATCH_YES) | |
4498 | { | |
4499 | m = MATCH_YES; | |
4500 | break; | |
4501 | } | |
4502 | ||
4503 | if (gfc_match_char (',') != MATCH_YES) | |
4504 | { | |
4505 | gfc_error ("Unexpected character in variable list at %C"); | |
4506 | m = MATCH_ERROR; | |
4507 | break; | |
4508 | } | |
4509 | } | |
4510 | ||
4511 | return m; | |
4512 | } | |
4513 | ||
4514 | ||
83d890b9 AL |
4515 | /* This routine matches Cray Pointer declarations of the form: |
4516 | pointer ( <pointer>, <pointee> ) | |
4517 | or | |
d51347f9 TB |
4518 | pointer ( <pointer1>, <pointee1> ), ( <pointer2>, <pointee2> ), ... |
4519 | The pointer, if already declared, should be an integer. Otherwise, we | |
83d890b9 AL |
4520 | set it as BT_INTEGER with kind gfc_index_integer_kind. The pointee may |
4521 | be either a scalar, or an array declaration. No space is allocated for | |
d51347f9 | 4522 | the pointee. For the statement |
83d890b9 AL |
4523 | pointer (ipt, ar(10)) |
4524 | any subsequent uses of ar will be translated (in C-notation) as | |
d51347f9 | 4525 | ar(i) => ((<type> *) ipt)(i) |
b122dc6a | 4526 | After gimplification, pointee variable will disappear in the code. */ |
83d890b9 AL |
4527 | |
4528 | static match | |
4529 | cray_pointer_decl (void) | |
4530 | { | |
4531 | match m; | |
4532 | gfc_array_spec *as; | |
4533 | gfc_symbol *cptr; /* Pointer symbol. */ | |
4534 | gfc_symbol *cpte; /* Pointee symbol. */ | |
4535 | locus var_locus; | |
4536 | bool done = false; | |
4537 | ||
4538 | while (!done) | |
4539 | { | |
4540 | if (gfc_match_char ('(') != MATCH_YES) | |
4541 | { | |
4542 | gfc_error ("Expected '(' at %C"); | |
d51347f9 | 4543 | return MATCH_ERROR; |
83d890b9 | 4544 | } |
d51347f9 | 4545 | |
83d890b9 AL |
4546 | /* Match pointer. */ |
4547 | var_locus = gfc_current_locus; | |
4548 | gfc_clear_attr (¤t_attr); | |
4549 | gfc_add_cray_pointer (¤t_attr, &var_locus); | |
4550 | current_ts.type = BT_INTEGER; | |
4551 | current_ts.kind = gfc_index_integer_kind; | |
4552 | ||
d51347f9 | 4553 | m = gfc_match_symbol (&cptr, 0); |
83d890b9 AL |
4554 | if (m != MATCH_YES) |
4555 | { | |
4556 | gfc_error ("Expected variable name at %C"); | |
4557 | return m; | |
4558 | } | |
d51347f9 | 4559 | |
83d890b9 AL |
4560 | if (gfc_add_cray_pointer (&cptr->attr, &var_locus) == FAILURE) |
4561 | return MATCH_ERROR; | |
4562 | ||
d51347f9 | 4563 | gfc_set_sym_referenced (cptr); |
83d890b9 AL |
4564 | |
4565 | if (cptr->ts.type == BT_UNKNOWN) /* Override the type, if necessary. */ | |
4566 | { | |
4567 | cptr->ts.type = BT_INTEGER; | |
d51347f9 | 4568 | cptr->ts.kind = gfc_index_integer_kind; |
83d890b9 AL |
4569 | } |
4570 | else if (cptr->ts.type != BT_INTEGER) | |
4571 | { | |
e25a0da3 | 4572 | gfc_error ("Cray pointer at %C must be an integer"); |
83d890b9 AL |
4573 | return MATCH_ERROR; |
4574 | } | |
4575 | else if (cptr->ts.kind < gfc_index_integer_kind) | |
4576 | gfc_warning ("Cray pointer at %C has %d bytes of precision;" | |
e25a0da3 | 4577 | " memory addresses require %d bytes", |
636dff67 | 4578 | cptr->ts.kind, gfc_index_integer_kind); |
83d890b9 AL |
4579 | |
4580 | if (gfc_match_char (',') != MATCH_YES) | |
4581 | { | |
4582 | gfc_error ("Expected \",\" at %C"); | |
d51347f9 | 4583 | return MATCH_ERROR; |
83d890b9 AL |
4584 | } |
4585 | ||
d51347f9 | 4586 | /* Match Pointee. */ |
83d890b9 AL |
4587 | var_locus = gfc_current_locus; |
4588 | gfc_clear_attr (¤t_attr); | |
4589 | gfc_add_cray_pointee (¤t_attr, &var_locus); | |
4590 | current_ts.type = BT_UNKNOWN; | |
4591 | current_ts.kind = 0; | |
4592 | ||
4593 | m = gfc_match_symbol (&cpte, 0); | |
4594 | if (m != MATCH_YES) | |
4595 | { | |
4596 | gfc_error ("Expected variable name at %C"); | |
4597 | return m; | |
4598 | } | |
d51347f9 | 4599 | |
83d890b9 AL |
4600 | /* Check for an optional array spec. */ |
4601 | m = gfc_match_array_spec (&as); | |
4602 | if (m == MATCH_ERROR) | |
4603 | { | |
4604 | gfc_free_array_spec (as); | |
4605 | return m; | |
4606 | } | |
4607 | else if (m == MATCH_NO) | |
4608 | { | |
4609 | gfc_free_array_spec (as); | |
4610 | as = NULL; | |
4611 | } | |
4612 | ||
4613 | if (gfc_add_cray_pointee (&cpte->attr, &var_locus) == FAILURE) | |
4614 | return MATCH_ERROR; | |
4615 | ||
4616 | gfc_set_sym_referenced (cpte); | |
4617 | ||
4618 | if (cpte->as == NULL) | |
4619 | { | |
4620 | if (gfc_set_array_spec (cpte, as, &var_locus) == FAILURE) | |
4621 | gfc_internal_error ("Couldn't set Cray pointee array spec."); | |
4622 | } | |
4623 | else if (as != NULL) | |
4624 | { | |
e25a0da3 | 4625 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
4626 | gfc_free_array_spec (as); |
4627 | return MATCH_ERROR; | |
4628 | } | |
4629 | ||
4630 | as = NULL; | |
4631 | ||
4632 | if (cpte->as != NULL) | |
4633 | { | |
4634 | /* Fix array spec. */ | |
4635 | m = gfc_mod_pointee_as (cpte->as); | |
4636 | if (m == MATCH_ERROR) | |
4637 | return m; | |
4638 | } | |
4639 | ||
4640 | /* Point the Pointee at the Pointer. */ | |
b122dc6a | 4641 | cpte->cp_pointer = cptr; |
83d890b9 AL |
4642 | |
4643 | if (gfc_match_char (')') != MATCH_YES) | |
4644 | { | |
4645 | gfc_error ("Expected \")\" at %C"); | |
4646 | return MATCH_ERROR; | |
4647 | } | |
4648 | m = gfc_match_char (','); | |
4649 | if (m != MATCH_YES) | |
4650 | done = true; /* Stop searching for more declarations. */ | |
4651 | ||
4652 | } | |
4653 | ||
4654 | if (m == MATCH_ERROR /* Failed when trying to find ',' above. */ | |
4655 | || gfc_match_eos () != MATCH_YES) | |
4656 | { | |
4657 | gfc_error ("Expected \",\" or end of statement at %C"); | |
4658 | return MATCH_ERROR; | |
4659 | } | |
4660 | return MATCH_YES; | |
4661 | } | |
4662 | ||
4663 | ||
6de9cd9a DN |
4664 | match |
4665 | gfc_match_external (void) | |
4666 | { | |
4667 | ||
4668 | gfc_clear_attr (¤t_attr); | |
1902704e | 4669 | current_attr.external = 1; |
6de9cd9a DN |
4670 | |
4671 | return attr_decl (); | |
4672 | } | |
4673 | ||
4674 | ||
6de9cd9a DN |
4675 | match |
4676 | gfc_match_intent (void) | |
4677 | { | |
4678 | sym_intent intent; | |
4679 | ||
4680 | intent = match_intent_spec (); | |
4681 | if (intent == INTENT_UNKNOWN) | |
4682 | return MATCH_ERROR; | |
4683 | ||
4684 | gfc_clear_attr (¤t_attr); | |
1902704e | 4685 | current_attr.intent = intent; |
6de9cd9a DN |
4686 | |
4687 | return attr_decl (); | |
4688 | } | |
4689 | ||
4690 | ||
4691 | match | |
4692 | gfc_match_intrinsic (void) | |
4693 | { | |
4694 | ||
4695 | gfc_clear_attr (¤t_attr); | |
1902704e | 4696 | current_attr.intrinsic = 1; |
6de9cd9a DN |
4697 | |
4698 | return attr_decl (); | |
4699 | } | |
4700 | ||
4701 | ||
4702 | match | |
4703 | gfc_match_optional (void) | |
4704 | { | |
4705 | ||
4706 | gfc_clear_attr (¤t_attr); | |
1902704e | 4707 | current_attr.optional = 1; |
6de9cd9a DN |
4708 | |
4709 | return attr_decl (); | |
4710 | } | |
4711 | ||
4712 | ||
4713 | match | |
4714 | gfc_match_pointer (void) | |
4715 | { | |
83d890b9 AL |
4716 | gfc_gobble_whitespace (); |
4717 | if (gfc_peek_char () == '(') | |
4718 | { | |
4719 | if (!gfc_option.flag_cray_pointer) | |
4720 | { | |
636dff67 SK |
4721 | gfc_error ("Cray pointer declaration at %C requires -fcray-pointer " |
4722 | "flag"); | |
83d890b9 AL |
4723 | return MATCH_ERROR; |
4724 | } | |
4725 | return cray_pointer_decl (); | |
4726 | } | |
4727 | else | |
4728 | { | |
4729 | gfc_clear_attr (¤t_attr); | |
1902704e | 4730 | current_attr.pointer = 1; |
83d890b9 AL |
4731 | |
4732 | return attr_decl (); | |
4733 | } | |
6de9cd9a DN |
4734 | } |
4735 | ||
4736 | ||
4737 | match | |
4738 | gfc_match_allocatable (void) | |
4739 | { | |
6de9cd9a | 4740 | gfc_clear_attr (¤t_attr); |
1902704e | 4741 | current_attr.allocatable = 1; |
6de9cd9a DN |
4742 | |
4743 | return attr_decl (); | |
4744 | } | |
4745 | ||
4746 | ||
4747 | match | |
4748 | gfc_match_dimension (void) | |
4749 | { | |
6de9cd9a | 4750 | gfc_clear_attr (¤t_attr); |
1902704e | 4751 | current_attr.dimension = 1; |
6de9cd9a DN |
4752 | |
4753 | return attr_decl (); | |
4754 | } | |
4755 | ||
4756 | ||
4757 | match | |
4758 | gfc_match_target (void) | |
4759 | { | |
6de9cd9a | 4760 | gfc_clear_attr (¤t_attr); |
1902704e | 4761 | current_attr.target = 1; |
6de9cd9a DN |
4762 | |
4763 | return attr_decl (); | |
4764 | } | |
4765 | ||
4766 | ||
4767 | /* Match the list of entities being specified in a PUBLIC or PRIVATE | |
4768 | statement. */ | |
4769 | ||
4770 | static match | |
4771 | access_attr_decl (gfc_statement st) | |
4772 | { | |
4773 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4774 | interface_type type; | |
4775 | gfc_user_op *uop; | |
4776 | gfc_symbol *sym; | |
4777 | gfc_intrinsic_op operator; | |
4778 | match m; | |
4779 | ||
4780 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
4781 | goto done; | |
4782 | ||
4783 | for (;;) | |
4784 | { | |
4785 | m = gfc_match_generic_spec (&type, name, &operator); | |
4786 | if (m == MATCH_NO) | |
4787 | goto syntax; | |
4788 | if (m == MATCH_ERROR) | |
4789 | return MATCH_ERROR; | |
4790 | ||
4791 | switch (type) | |
4792 | { | |
4793 | case INTERFACE_NAMELESS: | |
4794 | goto syntax; | |
4795 | ||
4796 | case INTERFACE_GENERIC: | |
4797 | if (gfc_get_symbol (name, NULL, &sym)) | |
4798 | goto done; | |
4799 | ||
636dff67 SK |
4800 | if (gfc_add_access (&sym->attr, (st == ST_PUBLIC) |
4801 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
231b2fcc | 4802 | sym->name, NULL) == FAILURE) |
6de9cd9a DN |
4803 | return MATCH_ERROR; |
4804 | ||
4805 | break; | |
4806 | ||
4807 | case INTERFACE_INTRINSIC_OP: | |
4808 | if (gfc_current_ns->operator_access[operator] == ACCESS_UNKNOWN) | |
4809 | { | |
4810 | gfc_current_ns->operator_access[operator] = | |
4811 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
4812 | } | |
4813 | else | |
4814 | { | |
4815 | gfc_error ("Access specification of the %s operator at %C has " | |
4816 | "already been specified", gfc_op2string (operator)); | |
4817 | goto done; | |
4818 | } | |
4819 | ||
4820 | break; | |
4821 | ||
4822 | case INTERFACE_USER_OP: | |
4823 | uop = gfc_get_uop (name); | |
4824 | ||
4825 | if (uop->access == ACCESS_UNKNOWN) | |
4826 | { | |
636dff67 SK |
4827 | uop->access = (st == ST_PUBLIC) |
4828 | ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
6de9cd9a DN |
4829 | } |
4830 | else | |
4831 | { | |
636dff67 SK |
4832 | gfc_error ("Access specification of the .%s. operator at %C " |
4833 | "has already been specified", sym->name); | |
6de9cd9a DN |
4834 | goto done; |
4835 | } | |
4836 | ||
4837 | break; | |
4838 | } | |
4839 | ||
4840 | if (gfc_match_char (',') == MATCH_NO) | |
4841 | break; | |
4842 | } | |
4843 | ||
4844 | if (gfc_match_eos () != MATCH_YES) | |
4845 | goto syntax; | |
4846 | return MATCH_YES; | |
4847 | ||
4848 | syntax: | |
4849 | gfc_syntax_error (st); | |
4850 | ||
4851 | done: | |
4852 | return MATCH_ERROR; | |
4853 | } | |
4854 | ||
4855 | ||
ee7e677f TB |
4856 | match |
4857 | gfc_match_protected (void) | |
4858 | { | |
4859 | gfc_symbol *sym; | |
4860 | match m; | |
4861 | ||
4862 | if (gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
4863 | { | |
4864 | gfc_error ("PROTECTED at %C only allowed in specification " | |
4865 | "part of a module"); | |
4866 | return MATCH_ERROR; | |
4867 | ||
4868 | } | |
4869 | ||
636dff67 | 4870 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: PROTECTED statement at %C") |
ee7e677f TB |
4871 | == FAILURE) |
4872 | return MATCH_ERROR; | |
4873 | ||
4874 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
4875 | { | |
4876 | return MATCH_ERROR; | |
4877 | } | |
4878 | ||
4879 | if (gfc_match_eos () == MATCH_YES) | |
4880 | goto syntax; | |
4881 | ||
4882 | for(;;) | |
4883 | { | |
4884 | m = gfc_match_symbol (&sym, 0); | |
4885 | switch (m) | |
4886 | { | |
4887 | case MATCH_YES: | |
636dff67 SK |
4888 | if (gfc_add_protected (&sym->attr, sym->name, &gfc_current_locus) |
4889 | == FAILURE) | |
ee7e677f TB |
4890 | return MATCH_ERROR; |
4891 | goto next_item; | |
4892 | ||
4893 | case MATCH_NO: | |
4894 | break; | |
4895 | ||
4896 | case MATCH_ERROR: | |
4897 | return MATCH_ERROR; | |
4898 | } | |
4899 | ||
4900 | next_item: | |
4901 | if (gfc_match_eos () == MATCH_YES) | |
4902 | break; | |
4903 | if (gfc_match_char (',') != MATCH_YES) | |
4904 | goto syntax; | |
4905 | } | |
4906 | ||
4907 | return MATCH_YES; | |
4908 | ||
4909 | syntax: | |
4910 | gfc_error ("Syntax error in PROTECTED statement at %C"); | |
4911 | return MATCH_ERROR; | |
4912 | } | |
4913 | ||
4914 | ||
6de9cd9a DN |
4915 | /* The PRIVATE statement is a bit weird in that it can be a attribute |
4916 | declaration, but also works as a standlone statement inside of a | |
4917 | type declaration or a module. */ | |
4918 | ||
4919 | match | |
636dff67 | 4920 | gfc_match_private (gfc_statement *st) |
6de9cd9a DN |
4921 | { |
4922 | ||
4923 | if (gfc_match ("private") != MATCH_YES) | |
4924 | return MATCH_NO; | |
4925 | ||
d51347f9 TB |
4926 | if (gfc_current_state () != COMP_MODULE |
4927 | && (gfc_current_state () != COMP_DERIVED | |
4928 | || !gfc_state_stack->previous | |
4929 | || gfc_state_stack->previous->state != COMP_MODULE)) | |
4930 | { | |
4931 | gfc_error ("PRIVATE statement at %C is only allowed in the " | |
4932 | "specification part of a module"); | |
4933 | return MATCH_ERROR; | |
4934 | } | |
4935 | ||
6de9cd9a DN |
4936 | if (gfc_current_state () == COMP_DERIVED) |
4937 | { | |
4938 | if (gfc_match_eos () == MATCH_YES) | |
4939 | { | |
4940 | *st = ST_PRIVATE; | |
4941 | return MATCH_YES; | |
4942 | } | |
4943 | ||
4944 | gfc_syntax_error (ST_PRIVATE); | |
4945 | return MATCH_ERROR; | |
4946 | } | |
4947 | ||
4948 | if (gfc_match_eos () == MATCH_YES) | |
4949 | { | |
4950 | *st = ST_PRIVATE; | |
4951 | return MATCH_YES; | |
4952 | } | |
4953 | ||
4954 | *st = ST_ATTR_DECL; | |
4955 | return access_attr_decl (ST_PRIVATE); | |
4956 | } | |
4957 | ||
4958 | ||
4959 | match | |
636dff67 | 4960 | gfc_match_public (gfc_statement *st) |
6de9cd9a DN |
4961 | { |
4962 | ||
4963 | if (gfc_match ("public") != MATCH_YES) | |
4964 | return MATCH_NO; | |
4965 | ||
d51347f9 TB |
4966 | if (gfc_current_state () != COMP_MODULE) |
4967 | { | |
4968 | gfc_error ("PUBLIC statement at %C is only allowed in the " | |
4969 | "specification part of a module"); | |
4970 | return MATCH_ERROR; | |
4971 | } | |
4972 | ||
6de9cd9a DN |
4973 | if (gfc_match_eos () == MATCH_YES) |
4974 | { | |
4975 | *st = ST_PUBLIC; | |
4976 | return MATCH_YES; | |
4977 | } | |
4978 | ||
4979 | *st = ST_ATTR_DECL; | |
4980 | return access_attr_decl (ST_PUBLIC); | |
4981 | } | |
4982 | ||
4983 | ||
4984 | /* Workhorse for gfc_match_parameter. */ | |
4985 | ||
4986 | static match | |
4987 | do_parm (void) | |
4988 | { | |
4989 | gfc_symbol *sym; | |
4990 | gfc_expr *init; | |
4991 | match m; | |
4992 | ||
4993 | m = gfc_match_symbol (&sym, 0); | |
4994 | if (m == MATCH_NO) | |
4995 | gfc_error ("Expected variable name at %C in PARAMETER statement"); | |
4996 | ||
4997 | if (m != MATCH_YES) | |
4998 | return m; | |
4999 | ||
5000 | if (gfc_match_char ('=') == MATCH_NO) | |
5001 | { | |
5002 | gfc_error ("Expected = sign in PARAMETER statement at %C"); | |
5003 | return MATCH_ERROR; | |
5004 | } | |
5005 | ||
5006 | m = gfc_match_init_expr (&init); | |
5007 | if (m == MATCH_NO) | |
5008 | gfc_error ("Expected expression at %C in PARAMETER statement"); | |
5009 | if (m != MATCH_YES) | |
5010 | return m; | |
5011 | ||
5012 | if (sym->ts.type == BT_UNKNOWN | |
5013 | && gfc_set_default_type (sym, 1, NULL) == FAILURE) | |
5014 | { | |
5015 | m = MATCH_ERROR; | |
5016 | goto cleanup; | |
5017 | } | |
5018 | ||
5019 | if (gfc_check_assign_symbol (sym, init) == FAILURE | |
231b2fcc | 5020 | || gfc_add_flavor (&sym->attr, FL_PARAMETER, sym->name, NULL) == FAILURE) |
6de9cd9a DN |
5021 | { |
5022 | m = MATCH_ERROR; | |
5023 | goto cleanup; | |
5024 | } | |
5025 | ||
7e2eba4b DE |
5026 | if (sym->ts.type == BT_CHARACTER |
5027 | && sym->ts.cl != NULL | |
5028 | && sym->ts.cl->length != NULL | |
5029 | && sym->ts.cl->length->expr_type == EXPR_CONSTANT | |
5030 | && init->expr_type == EXPR_CONSTANT | |
5031 | && init->ts.type == BT_CHARACTER | |
5032 | && init->ts.kind == 1) | |
5033 | gfc_set_constant_character_len ( | |
2220652d | 5034 | mpz_get_si (sym->ts.cl->length->value.integer), init, false); |
7e2eba4b | 5035 | |
6de9cd9a DN |
5036 | sym->value = init; |
5037 | return MATCH_YES; | |
5038 | ||
5039 | cleanup: | |
5040 | gfc_free_expr (init); | |
5041 | return m; | |
5042 | } | |
5043 | ||
5044 | ||
5045 | /* Match a parameter statement, with the weird syntax that these have. */ | |
5046 | ||
5047 | match | |
5048 | gfc_match_parameter (void) | |
5049 | { | |
5050 | match m; | |
5051 | ||
5052 | if (gfc_match_char ('(') == MATCH_NO) | |
5053 | return MATCH_NO; | |
5054 | ||
5055 | for (;;) | |
5056 | { | |
5057 | m = do_parm (); | |
5058 | if (m != MATCH_YES) | |
5059 | break; | |
5060 | ||
5061 | if (gfc_match (" )%t") == MATCH_YES) | |
5062 | break; | |
5063 | ||
5064 | if (gfc_match_char (',') != MATCH_YES) | |
5065 | { | |
5066 | gfc_error ("Unexpected characters in PARAMETER statement at %C"); | |
5067 | m = MATCH_ERROR; | |
5068 | break; | |
5069 | } | |
5070 | } | |
5071 | ||
5072 | return m; | |
5073 | } | |
5074 | ||
5075 | ||
5076 | /* Save statements have a special syntax. */ | |
5077 | ||
5078 | match | |
5079 | gfc_match_save (void) | |
5080 | { | |
9056bd70 TS |
5081 | char n[GFC_MAX_SYMBOL_LEN+1]; |
5082 | gfc_common_head *c; | |
6de9cd9a DN |
5083 | gfc_symbol *sym; |
5084 | match m; | |
5085 | ||
5086 | if (gfc_match_eos () == MATCH_YES) | |
5087 | { | |
5088 | if (gfc_current_ns->seen_save) | |
5089 | { | |
636dff67 SK |
5090 | if (gfc_notify_std (GFC_STD_LEGACY, "Blanket SAVE statement at %C " |
5091 | "follows previous SAVE statement") | |
09e87839 AL |
5092 | == FAILURE) |
5093 | return MATCH_ERROR; | |
6de9cd9a DN |
5094 | } |
5095 | ||
5096 | gfc_current_ns->save_all = gfc_current_ns->seen_save = 1; | |
5097 | return MATCH_YES; | |
5098 | } | |
5099 | ||
5100 | if (gfc_current_ns->save_all) | |
5101 | { | |
636dff67 SK |
5102 | if (gfc_notify_std (GFC_STD_LEGACY, "SAVE statement at %C follows " |
5103 | "blanket SAVE statement") | |
09e87839 AL |
5104 | == FAILURE) |
5105 | return MATCH_ERROR; | |
6de9cd9a DN |
5106 | } |
5107 | ||
5108 | gfc_match (" ::"); | |
5109 | ||
5110 | for (;;) | |
5111 | { | |
5112 | m = gfc_match_symbol (&sym, 0); | |
5113 | switch (m) | |
5114 | { | |
5115 | case MATCH_YES: | |
636dff67 SK |
5116 | if (gfc_add_save (&sym->attr, sym->name, &gfc_current_locus) |
5117 | == FAILURE) | |
6de9cd9a DN |
5118 | return MATCH_ERROR; |
5119 | goto next_item; | |
5120 | ||
5121 | case MATCH_NO: | |
5122 | break; | |
5123 | ||
5124 | case MATCH_ERROR: | |
5125 | return MATCH_ERROR; | |
5126 | } | |
5127 | ||
9056bd70 | 5128 | m = gfc_match (" / %n /", &n); |
6de9cd9a DN |
5129 | if (m == MATCH_ERROR) |
5130 | return MATCH_ERROR; | |
5131 | if (m == MATCH_NO) | |
5132 | goto syntax; | |
5133 | ||
53814b8f | 5134 | c = gfc_get_common (n, 0); |
9056bd70 TS |
5135 | c->saved = 1; |
5136 | ||
6de9cd9a DN |
5137 | gfc_current_ns->seen_save = 1; |
5138 | ||
5139 | next_item: | |
5140 | if (gfc_match_eos () == MATCH_YES) | |
5141 | break; | |
5142 | if (gfc_match_char (',') != MATCH_YES) | |
5143 | goto syntax; | |
5144 | } | |
5145 | ||
5146 | return MATCH_YES; | |
5147 | ||
5148 | syntax: | |
5149 | gfc_error ("Syntax error in SAVE statement at %C"); | |
5150 | return MATCH_ERROR; | |
5151 | } | |
5152 | ||
5153 | ||
06469efd PT |
5154 | match |
5155 | gfc_match_value (void) | |
5156 | { | |
5157 | gfc_symbol *sym; | |
5158 | match m; | |
5159 | ||
636dff67 | 5160 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: VALUE statement at %C") |
06469efd PT |
5161 | == FAILURE) |
5162 | return MATCH_ERROR; | |
5163 | ||
5164 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
5165 | { | |
5166 | return MATCH_ERROR; | |
5167 | } | |
5168 | ||
5169 | if (gfc_match_eos () == MATCH_YES) | |
5170 | goto syntax; | |
5171 | ||
5172 | for(;;) | |
5173 | { | |
5174 | m = gfc_match_symbol (&sym, 0); | |
5175 | switch (m) | |
5176 | { | |
5177 | case MATCH_YES: | |
636dff67 SK |
5178 | if (gfc_add_value (&sym->attr, sym->name, &gfc_current_locus) |
5179 | == FAILURE) | |
06469efd PT |
5180 | return MATCH_ERROR; |
5181 | goto next_item; | |
5182 | ||
5183 | case MATCH_NO: | |
5184 | break; | |
5185 | ||
5186 | case MATCH_ERROR: | |
5187 | return MATCH_ERROR; | |
5188 | } | |
5189 | ||
5190 | next_item: | |
5191 | if (gfc_match_eos () == MATCH_YES) | |
5192 | break; | |
5193 | if (gfc_match_char (',') != MATCH_YES) | |
5194 | goto syntax; | |
5195 | } | |
5196 | ||
5197 | return MATCH_YES; | |
5198 | ||
5199 | syntax: | |
5200 | gfc_error ("Syntax error in VALUE statement at %C"); | |
5201 | return MATCH_ERROR; | |
5202 | } | |
5203 | ||
66e4ab31 | 5204 | |
775e6c3a TB |
5205 | match |
5206 | gfc_match_volatile (void) | |
5207 | { | |
5208 | gfc_symbol *sym; | |
5209 | match m; | |
5210 | ||
636dff67 | 5211 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: VOLATILE statement at %C") |
775e6c3a TB |
5212 | == FAILURE) |
5213 | return MATCH_ERROR; | |
5214 | ||
5215 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
5216 | { | |
5217 | return MATCH_ERROR; | |
5218 | } | |
5219 | ||
5220 | if (gfc_match_eos () == MATCH_YES) | |
5221 | goto syntax; | |
5222 | ||
5223 | for(;;) | |
5224 | { | |
9bce3c1c TB |
5225 | /* VOLATILE is special because it can be added to host-associated |
5226 | symbols locally. */ | |
5227 | m = gfc_match_symbol (&sym, 1); | |
775e6c3a TB |
5228 | switch (m) |
5229 | { | |
5230 | case MATCH_YES: | |
636dff67 SK |
5231 | if (gfc_add_volatile (&sym->attr, sym->name, &gfc_current_locus) |
5232 | == FAILURE) | |
775e6c3a TB |
5233 | return MATCH_ERROR; |
5234 | goto next_item; | |
5235 | ||
5236 | case MATCH_NO: | |
5237 | break; | |
5238 | ||
5239 | case MATCH_ERROR: | |
5240 | return MATCH_ERROR; | |
5241 | } | |
5242 | ||
5243 | next_item: | |
5244 | if (gfc_match_eos () == MATCH_YES) | |
5245 | break; | |
5246 | if (gfc_match_char (',') != MATCH_YES) | |
5247 | goto syntax; | |
5248 | } | |
5249 | ||
5250 | return MATCH_YES; | |
5251 | ||
5252 | syntax: | |
5253 | gfc_error ("Syntax error in VOLATILE statement at %C"); | |
5254 | return MATCH_ERROR; | |
5255 | } | |
5256 | ||
5257 | ||
6de9cd9a DN |
5258 | /* Match a module procedure statement. Note that we have to modify |
5259 | symbols in the parent's namespace because the current one was there | |
49de9e73 | 5260 | to receive symbols that are in an interface's formal argument list. */ |
6de9cd9a DN |
5261 | |
5262 | match | |
5263 | gfc_match_modproc (void) | |
5264 | { | |
5265 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5266 | gfc_symbol *sym; | |
5267 | match m; | |
060fca4a | 5268 | gfc_namespace *module_ns; |
6de9cd9a DN |
5269 | |
5270 | if (gfc_state_stack->state != COMP_INTERFACE | |
5271 | || gfc_state_stack->previous == NULL | |
5272 | || current_interface.type == INTERFACE_NAMELESS) | |
5273 | { | |
636dff67 SK |
5274 | gfc_error ("MODULE PROCEDURE at %C must be in a generic module " |
5275 | "interface"); | |
6de9cd9a DN |
5276 | return MATCH_ERROR; |
5277 | } | |
5278 | ||
060fca4a PT |
5279 | module_ns = gfc_current_ns->parent; |
5280 | for (; module_ns; module_ns = module_ns->parent) | |
5281 | if (module_ns->proc_name->attr.flavor == FL_MODULE) | |
5282 | break; | |
5283 | ||
5284 | if (module_ns == NULL) | |
5285 | return MATCH_ERROR; | |
5286 | ||
6de9cd9a DN |
5287 | for (;;) |
5288 | { | |
5289 | m = gfc_match_name (name); | |
5290 | if (m == MATCH_NO) | |
5291 | goto syntax; | |
5292 | if (m != MATCH_YES) | |
5293 | return MATCH_ERROR; | |
5294 | ||
060fca4a | 5295 | if (gfc_get_symbol (name, module_ns, &sym)) |
6de9cd9a DN |
5296 | return MATCH_ERROR; |
5297 | ||
5298 | if (sym->attr.proc != PROC_MODULE | |
231b2fcc TS |
5299 | && gfc_add_procedure (&sym->attr, PROC_MODULE, |
5300 | sym->name, NULL) == FAILURE) | |
6de9cd9a DN |
5301 | return MATCH_ERROR; |
5302 | ||
5303 | if (gfc_add_interface (sym) == FAILURE) | |
5304 | return MATCH_ERROR; | |
5305 | ||
71f77fd7 PT |
5306 | sym->attr.mod_proc = 1; |
5307 | ||
6de9cd9a DN |
5308 | if (gfc_match_eos () == MATCH_YES) |
5309 | break; | |
5310 | if (gfc_match_char (',') != MATCH_YES) | |
5311 | goto syntax; | |
5312 | } | |
5313 | ||
5314 | return MATCH_YES; | |
5315 | ||
5316 | syntax: | |
5317 | gfc_syntax_error (ST_MODULE_PROC); | |
5318 | return MATCH_ERROR; | |
5319 | } | |
5320 | ||
5321 | ||
a8b3b0b6 CR |
5322 | /* Match the optional attribute specifiers for a type declaration. |
5323 | Return MATCH_ERROR if an error is encountered in one of the handled | |
5324 | attributes (public, private, bind(c)), MATCH_NO if what's found is | |
5325 | not a handled attribute, and MATCH_YES otherwise. TODO: More error | |
5326 | checking on attribute conflicts needs to be done. */ | |
6de9cd9a DN |
5327 | |
5328 | match | |
a8b3b0b6 | 5329 | gfc_get_type_attr_spec (symbol_attribute *attr) |
6de9cd9a | 5330 | { |
a8b3b0b6 | 5331 | /* See if the derived type is marked as private. */ |
6de9cd9a DN |
5332 | if (gfc_match (" , private") == MATCH_YES) |
5333 | { | |
d51347f9 | 5334 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 5335 | { |
d51347f9 TB |
5336 | gfc_error ("Derived type at %C can only be PRIVATE in the " |
5337 | "specification part of a module"); | |
6de9cd9a DN |
5338 | return MATCH_ERROR; |
5339 | } | |
5340 | ||
a8b3b0b6 | 5341 | if (gfc_add_access (attr, ACCESS_PRIVATE, NULL, NULL) == FAILURE) |
6de9cd9a | 5342 | return MATCH_ERROR; |
6de9cd9a | 5343 | } |
a8b3b0b6 | 5344 | else if (gfc_match (" , public") == MATCH_YES) |
6de9cd9a | 5345 | { |
d51347f9 | 5346 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 5347 | { |
d51347f9 TB |
5348 | gfc_error ("Derived type at %C can only be PUBLIC in the " |
5349 | "specification part of a module"); | |
6de9cd9a DN |
5350 | return MATCH_ERROR; |
5351 | } | |
5352 | ||
a8b3b0b6 | 5353 | if (gfc_add_access (attr, ACCESS_PUBLIC, NULL, NULL) == FAILURE) |
6de9cd9a | 5354 | return MATCH_ERROR; |
6de9cd9a | 5355 | } |
a8b3b0b6 CR |
5356 | else if(gfc_match(" , bind ( c )") == MATCH_YES) |
5357 | { | |
5358 | /* If the type is defined to be bind(c) it then needs to make | |
5359 | sure that all fields are interoperable. This will | |
5360 | need to be a semantic check on the finished derived type. | |
5361 | See 15.2.3 (lines 9-12) of F2003 draft. */ | |
5362 | if (gfc_add_is_bind_c (attr, NULL, &gfc_current_locus, 0) != SUCCESS) | |
5363 | return MATCH_ERROR; | |
5364 | ||
5365 | /* TODO: attr conflicts need to be checked, probably in symbol.c. */ | |
5366 | } | |
5367 | else | |
5368 | return MATCH_NO; | |
5369 | ||
5370 | /* If we get here, something matched. */ | |
5371 | return MATCH_YES; | |
5372 | } | |
5373 | ||
5374 | ||
5375 | /* Match the beginning of a derived type declaration. If a type name | |
5376 | was the result of a function, then it is possible to have a symbol | |
5377 | already to be known as a derived type yet have no components. */ | |
5378 | ||
5379 | match | |
5380 | gfc_match_derived_decl (void) | |
5381 | { | |
5382 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5383 | symbol_attribute attr; | |
5384 | gfc_symbol *sym; | |
5385 | match m; | |
5386 | match is_type_attr_spec = MATCH_NO; | |
5387 | ||
5388 | if (gfc_current_state () == COMP_DERIVED) | |
5389 | return MATCH_NO; | |
5390 | ||
5391 | gfc_clear_attr (&attr); | |
5392 | ||
5393 | do | |
5394 | { | |
5395 | is_type_attr_spec = gfc_get_type_attr_spec (&attr); | |
5396 | if (is_type_attr_spec == MATCH_ERROR) | |
5397 | return MATCH_ERROR; | |
5398 | } while (is_type_attr_spec == MATCH_YES); | |
6de9cd9a DN |
5399 | |
5400 | if (gfc_match (" ::") != MATCH_YES && attr.access != ACCESS_UNKNOWN) | |
5401 | { | |
5402 | gfc_error ("Expected :: in TYPE definition at %C"); | |
5403 | return MATCH_ERROR; | |
5404 | } | |
5405 | ||
5406 | m = gfc_match (" %n%t", name); | |
5407 | if (m != MATCH_YES) | |
5408 | return m; | |
5409 | ||
5410 | /* Make sure the name isn't the name of an intrinsic type. The | |
1e863adf TS |
5411 | 'double {precision,complex}' types don't get past the name |
5412 | matcher, unless they're written as a single word or in fixed | |
5413 | form. */ | |
6de9cd9a DN |
5414 | if (strcmp (name, "integer") == 0 |
5415 | || strcmp (name, "real") == 0 | |
5416 | || strcmp (name, "character") == 0 | |
5417 | || strcmp (name, "logical") == 0 | |
1e863adf TS |
5418 | || strcmp (name, "complex") == 0 |
5419 | || strcmp (name, "doubleprecision") == 0 | |
5420 | || strcmp (name, "doublecomplex") == 0) | |
6de9cd9a | 5421 | { |
636dff67 SK |
5422 | gfc_error ("Type name '%s' at %C cannot be the same as an intrinsic " |
5423 | "type", name); | |
6de9cd9a DN |
5424 | return MATCH_ERROR; |
5425 | } | |
5426 | ||
5427 | if (gfc_get_symbol (name, NULL, &sym)) | |
5428 | return MATCH_ERROR; | |
5429 | ||
5430 | if (sym->ts.type != BT_UNKNOWN) | |
5431 | { | |
5432 | gfc_error ("Derived type name '%s' at %C already has a basic type " | |
5433 | "of %s", sym->name, gfc_typename (&sym->ts)); | |
5434 | return MATCH_ERROR; | |
5435 | } | |
5436 | ||
5437 | /* The symbol may already have the derived attribute without the | |
5438 | components. The ways this can happen is via a function | |
5439 | definition, an INTRINSIC statement or a subtype in another | |
5440 | derived type that is a pointer. The first part of the AND clause | |
f7b529fa | 5441 | is true if a the symbol is not the return value of a function. */ |
6de9cd9a | 5442 | if (sym->attr.flavor != FL_DERIVED |
231b2fcc | 5443 | && gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL) == FAILURE) |
6de9cd9a DN |
5444 | return MATCH_ERROR; |
5445 | ||
5446 | if (sym->components != NULL) | |
5447 | { | |
636dff67 SK |
5448 | gfc_error ("Derived type definition of '%s' at %C has already been " |
5449 | "defined", sym->name); | |
6de9cd9a DN |
5450 | return MATCH_ERROR; |
5451 | } | |
5452 | ||
5453 | if (attr.access != ACCESS_UNKNOWN | |
231b2fcc | 5454 | && gfc_add_access (&sym->attr, attr.access, sym->name, NULL) == FAILURE) |
6de9cd9a DN |
5455 | return MATCH_ERROR; |
5456 | ||
a8b3b0b6 CR |
5457 | /* See if the derived type was labeled as bind(c). */ |
5458 | if (attr.is_bind_c != 0) | |
5459 | sym->attr.is_bind_c = attr.is_bind_c; | |
5460 | ||
6de9cd9a DN |
5461 | gfc_new_block = sym; |
5462 | ||
5463 | return MATCH_YES; | |
5464 | } | |
83d890b9 AL |
5465 | |
5466 | ||
5467 | /* Cray Pointees can be declared as: | |
5468 | pointer (ipt, a (n,m,...,*)) | |
5469 | By default, this is treated as an AS_ASSUMED_SIZE array. We'll | |
5470 | cheat and set a constant bound of 1 for the last dimension, if this | |
5471 | is the case. Since there is no bounds-checking for Cray Pointees, | |
5472 | this will be okay. */ | |
5473 | ||
5474 | try | |
5475 | gfc_mod_pointee_as (gfc_array_spec *as) | |
5476 | { | |
5477 | as->cray_pointee = true; /* This will be useful to know later. */ | |
5478 | if (as->type == AS_ASSUMED_SIZE) | |
5479 | { | |
5480 | as->type = AS_EXPLICIT; | |
5481 | as->upper[as->rank - 1] = gfc_int_expr (1); | |
5482 | as->cp_was_assumed = true; | |
5483 | } | |
5484 | else if (as->type == AS_ASSUMED_SHAPE) | |
5485 | { | |
5486 | gfc_error ("Cray Pointee at %C cannot be assumed shape array"); | |
5487 | return MATCH_ERROR; | |
5488 | } | |
5489 | return MATCH_YES; | |
5490 | } | |
25d8f0a2 TS |
5491 | |
5492 | ||
5493 | /* Match the enum definition statement, here we are trying to match | |
5494 | the first line of enum definition statement. | |
5495 | Returns MATCH_YES if match is found. */ | |
5496 | ||
5497 | match | |
5498 | gfc_match_enum (void) | |
5499 | { | |
5500 | match m; | |
5501 | ||
5502 | m = gfc_match_eos (); | |
5503 | if (m != MATCH_YES) | |
5504 | return m; | |
5505 | ||
6133c68a | 5506 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: ENUM and ENUMERATOR at %C") |
25d8f0a2 TS |
5507 | == FAILURE) |
5508 | return MATCH_ERROR; | |
5509 | ||
5510 | return MATCH_YES; | |
5511 | } | |
5512 | ||
5513 | ||
6133c68a TS |
5514 | /* Match a variable name with an optional initializer. When this |
5515 | subroutine is called, a variable is expected to be parsed next. | |
5516 | Depending on what is happening at the moment, updates either the | |
5517 | symbol table or the current interface. */ | |
5518 | ||
5519 | static match | |
5520 | enumerator_decl (void) | |
5521 | { | |
5522 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5523 | gfc_expr *initializer; | |
5524 | gfc_array_spec *as = NULL; | |
5525 | gfc_symbol *sym; | |
5526 | locus var_locus; | |
5527 | match m; | |
5528 | try t; | |
5529 | locus old_locus; | |
5530 | ||
5531 | initializer = NULL; | |
5532 | old_locus = gfc_current_locus; | |
5533 | ||
5534 | /* When we get here, we've just matched a list of attributes and | |
5535 | maybe a type and a double colon. The next thing we expect to see | |
5536 | is the name of the symbol. */ | |
5537 | m = gfc_match_name (name); | |
5538 | if (m != MATCH_YES) | |
5539 | goto cleanup; | |
5540 | ||
5541 | var_locus = gfc_current_locus; | |
5542 | ||
5543 | /* OK, we've successfully matched the declaration. Now put the | |
5544 | symbol in the current namespace. If we fail to create the symbol, | |
5545 | bail out. */ | |
5546 | if (build_sym (name, NULL, &as, &var_locus) == FAILURE) | |
5547 | { | |
5548 | m = MATCH_ERROR; | |
5549 | goto cleanup; | |
5550 | } | |
5551 | ||
5552 | /* The double colon must be present in order to have initializers. | |
5553 | Otherwise the statement is ambiguous with an assignment statement. */ | |
5554 | if (colon_seen) | |
5555 | { | |
5556 | if (gfc_match_char ('=') == MATCH_YES) | |
5557 | { | |
5558 | m = gfc_match_init_expr (&initializer); | |
5559 | if (m == MATCH_NO) | |
5560 | { | |
5561 | gfc_error ("Expected an initialization expression at %C"); | |
5562 | m = MATCH_ERROR; | |
5563 | } | |
5564 | ||
5565 | if (m != MATCH_YES) | |
5566 | goto cleanup; | |
5567 | } | |
5568 | } | |
5569 | ||
5570 | /* If we do not have an initializer, the initialization value of the | |
5571 | previous enumerator (stored in last_initializer) is incremented | |
5572 | by 1 and is used to initialize the current enumerator. */ | |
5573 | if (initializer == NULL) | |
5574 | initializer = gfc_enum_initializer (last_initializer, old_locus); | |
d51347f9 | 5575 | |
6133c68a TS |
5576 | if (initializer == NULL || initializer->ts.type != BT_INTEGER) |
5577 | { | |
5578 | gfc_error("ENUMERATOR %L not initialized with integer expression", | |
5579 | &var_locus); | |
d51347f9 | 5580 | m = MATCH_ERROR; |
6133c68a TS |
5581 | gfc_free_enum_history (); |
5582 | goto cleanup; | |
5583 | } | |
5584 | ||
5585 | /* Store this current initializer, for the next enumerator variable | |
5586 | to be parsed. add_init_expr_to_sym() zeros initializer, so we | |
5587 | use last_initializer below. */ | |
5588 | last_initializer = initializer; | |
5589 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
5590 | ||
5591 | /* Maintain enumerator history. */ | |
5592 | gfc_find_symbol (name, NULL, 0, &sym); | |
5593 | create_enum_history (sym, last_initializer); | |
5594 | ||
5595 | return (t == SUCCESS) ? MATCH_YES : MATCH_ERROR; | |
5596 | ||
5597 | cleanup: | |
5598 | /* Free stuff up and return. */ | |
5599 | gfc_free_expr (initializer); | |
5600 | ||
5601 | return m; | |
5602 | } | |
5603 | ||
5604 | ||
66e4ab31 | 5605 | /* Match the enumerator definition statement. */ |
25d8f0a2 TS |
5606 | |
5607 | match | |
5608 | gfc_match_enumerator_def (void) | |
5609 | { | |
5610 | match m; | |
6133c68a | 5611 | try t; |
d51347f9 | 5612 | |
25d8f0a2 | 5613 | gfc_clear_ts (¤t_ts); |
d51347f9 | 5614 | |
25d8f0a2 TS |
5615 | m = gfc_match (" enumerator"); |
5616 | if (m != MATCH_YES) | |
5617 | return m; | |
6133c68a TS |
5618 | |
5619 | m = gfc_match (" :: "); | |
5620 | if (m == MATCH_ERROR) | |
5621 | return m; | |
5622 | ||
5623 | colon_seen = (m == MATCH_YES); | |
d51347f9 | 5624 | |
25d8f0a2 TS |
5625 | if (gfc_current_state () != COMP_ENUM) |
5626 | { | |
5627 | gfc_error ("ENUM definition statement expected before %C"); | |
5628 | gfc_free_enum_history (); | |
5629 | return MATCH_ERROR; | |
5630 | } | |
5631 | ||
5632 | (¤t_ts)->type = BT_INTEGER; | |
5633 | (¤t_ts)->kind = gfc_c_int_kind; | |
d51347f9 | 5634 | |
6133c68a TS |
5635 | gfc_clear_attr (¤t_attr); |
5636 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, NULL); | |
5637 | if (t == FAILURE) | |
25d8f0a2 | 5638 | { |
6133c68a | 5639 | m = MATCH_ERROR; |
25d8f0a2 TS |
5640 | goto cleanup; |
5641 | } | |
5642 | ||
25d8f0a2 TS |
5643 | for (;;) |
5644 | { | |
6133c68a | 5645 | m = enumerator_decl (); |
25d8f0a2 TS |
5646 | if (m == MATCH_ERROR) |
5647 | goto cleanup; | |
5648 | if (m == MATCH_NO) | |
5649 | break; | |
5650 | ||
5651 | if (gfc_match_eos () == MATCH_YES) | |
5652 | goto cleanup; | |
5653 | if (gfc_match_char (',') != MATCH_YES) | |
5654 | break; | |
5655 | } | |
5656 | ||
5657 | if (gfc_current_state () == COMP_ENUM) | |
5658 | { | |
5659 | gfc_free_enum_history (); | |
5660 | gfc_error ("Syntax error in ENUMERATOR definition at %C"); | |
5661 | m = MATCH_ERROR; | |
5662 | } | |
5663 | ||
5664 | cleanup: | |
5665 | gfc_free_array_spec (current_as); | |
5666 | current_as = NULL; | |
5667 | return m; | |
5668 | ||
5669 | } | |
5670 |