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4ee9c684 | 1 | /* Declaration statement matcher |
d353bf18 | 2 | Copyright (C) 2002-2015 Free Software Foundation, Inc. |
4ee9c684 | 3 | Contributed by Andy Vaught |
4 | ||
c84b470d | 5 | This file is part of GCC. |
4ee9c684 | 6 | |
c84b470d | 7 | GCC is free software; you can redistribute it and/or modify it under |
8 | the terms of the GNU General Public License as published by the Free | |
bdabe786 | 9 | Software Foundation; either version 3, or (at your option) any later |
c84b470d | 10 | version. |
4ee9c684 | 11 | |
c84b470d | 12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
4ee9c684 | 16 | |
17 | You should have received a copy of the GNU General Public License | |
bdabe786 | 18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
4ee9c684 | 20 | |
4ee9c684 | 21 | #include "config.h" |
7436502b | 22 | #include "system.h" |
e4d6c7fc | 23 | #include "coretypes.h" |
4cba6f60 | 24 | #include "options.h" |
25 | #include "tree.h" | |
4ee9c684 | 26 | #include "gfortran.h" |
4cba6f60 | 27 | #include "stringpool.h" |
4ee9c684 | 28 | #include "match.h" |
29 | #include "parse.h" | |
126387b5 | 30 | #include "constructor.h" |
b20a8bb4 | 31 | #include "alias.h" |
cbbac028 | 32 | |
33 | /* Macros to access allocate memory for gfc_data_variable, | |
34 | gfc_data_value and gfc_data. */ | |
48d8ad5a | 35 | #define gfc_get_data_variable() XCNEW (gfc_data_variable) |
36 | #define gfc_get_data_value() XCNEW (gfc_data_value) | |
37 | #define gfc_get_data() XCNEW (gfc_data) | |
cbbac028 | 38 | |
39 | ||
60e19868 | 40 | static bool set_binding_label (const char **, const char *, int); |
7b2060ba | 41 | |
42 | ||
36ae04f2 | 43 | /* This flag is set if an old-style length selector is matched |
4ee9c684 | 44 | during a type-declaration statement. */ |
45 | ||
46 | static int old_char_selector; | |
47 | ||
5739e54e | 48 | /* When variables acquire types and attributes from a declaration |
4ee9c684 | 49 | statement, they get them from the following static variables. The |
50 | first part of a declaration sets these variables and the second | |
51 | part copies these into symbol structures. */ | |
52 | ||
53 | static gfc_typespec current_ts; | |
54 | ||
55 | static symbol_attribute current_attr; | |
56 | static gfc_array_spec *current_as; | |
57 | static int colon_seen; | |
58 | ||
c5d33754 | 59 | /* The current binding label (if any). */ |
1d8a57d8 | 60 | static const char* curr_binding_label; |
c5d33754 | 61 | /* Need to know how many identifiers are on the current data declaration |
62 | line in case we're given the BIND(C) attribute with a NAME= specifier. */ | |
63 | static int num_idents_on_line; | |
64 | /* Need to know if a NAME= specifier was found during gfc_match_bind_c so we | |
65 | can supply a name if the curr_binding_label is nil and NAME= was not. */ | |
66 | static int has_name_equals = 0; | |
67 | ||
3b6a4b41 | 68 | /* Initializer of the previous enumerator. */ |
69 | ||
70 | static gfc_expr *last_initializer; | |
71 | ||
72 | /* History of all the enumerators is maintained, so that | |
73 | kind values of all the enumerators could be updated depending | |
74 | upon the maximum initialized value. */ | |
75 | ||
76 | typedef struct enumerator_history | |
77 | { | |
78 | gfc_symbol *sym; | |
79 | gfc_expr *initializer; | |
80 | struct enumerator_history *next; | |
81 | } | |
82 | enumerator_history; | |
83 | ||
84 | /* Header of enum history chain. */ | |
85 | ||
86 | static enumerator_history *enum_history = NULL; | |
87 | ||
88 | /* Pointer of enum history node containing largest initializer. */ | |
89 | ||
90 | static enumerator_history *max_enum = NULL; | |
91 | ||
4ee9c684 | 92 | /* gfc_new_block points to the symbol of a newly matched block. */ |
93 | ||
94 | gfc_symbol *gfc_new_block; | |
95 | ||
077932f9 | 96 | bool gfc_matching_function; |
67a51c8e | 97 | |
4ee9c684 | 98 | |
b4f45d02 | 99 | /********************* DATA statement subroutines *********************/ |
100 | ||
1bfea7e8 | 101 | static bool in_match_data = false; |
102 | ||
103 | bool | |
104 | gfc_in_match_data (void) | |
105 | { | |
106 | return in_match_data; | |
107 | } | |
108 | ||
cbbac028 | 109 | static void |
110 | set_in_match_data (bool set_value) | |
1bfea7e8 | 111 | { |
112 | in_match_data = set_value; | |
113 | } | |
114 | ||
b4f45d02 | 115 | /* Free a gfc_data_variable structure and everything beneath it. */ |
116 | ||
117 | static void | |
1a9745d2 | 118 | free_variable (gfc_data_variable *p) |
b4f45d02 | 119 | { |
120 | gfc_data_variable *q; | |
121 | ||
122 | for (; p; p = q) | |
123 | { | |
124 | q = p->next; | |
125 | gfc_free_expr (p->expr); | |
126 | gfc_free_iterator (&p->iter, 0); | |
127 | free_variable (p->list); | |
434f0922 | 128 | free (p); |
b4f45d02 | 129 | } |
130 | } | |
131 | ||
132 | ||
133 | /* Free a gfc_data_value structure and everything beneath it. */ | |
134 | ||
135 | static void | |
1a9745d2 | 136 | free_value (gfc_data_value *p) |
b4f45d02 | 137 | { |
138 | gfc_data_value *q; | |
139 | ||
140 | for (; p; p = q) | |
141 | { | |
142 | q = p->next; | |
2d4466dd | 143 | mpz_clear (p->repeat); |
b4f45d02 | 144 | gfc_free_expr (p->expr); |
434f0922 | 145 | free (p); |
b4f45d02 | 146 | } |
147 | } | |
148 | ||
149 | ||
150 | /* Free a list of gfc_data structures. */ | |
151 | ||
152 | void | |
1a9745d2 | 153 | gfc_free_data (gfc_data *p) |
b4f45d02 | 154 | { |
155 | gfc_data *q; | |
156 | ||
157 | for (; p; p = q) | |
158 | { | |
159 | q = p->next; | |
b4f45d02 | 160 | free_variable (p->var); |
161 | free_value (p->value); | |
434f0922 | 162 | free (p); |
b4f45d02 | 163 | } |
164 | } | |
165 | ||
166 | ||
af29c1f0 | 167 | /* Free all data in a namespace. */ |
1a9745d2 | 168 | |
af29c1f0 | 169 | static void |
f6d0e37a | 170 | gfc_free_data_all (gfc_namespace *ns) |
af29c1f0 | 171 | { |
172 | gfc_data *d; | |
173 | ||
174 | for (;ns->data;) | |
175 | { | |
176 | d = ns->data->next; | |
434f0922 | 177 | free (ns->data); |
af29c1f0 | 178 | ns->data = d; |
179 | } | |
180 | } | |
181 | ||
388ce1b2 | 182 | /* Reject data parsed since the last restore point was marked. */ |
183 | ||
184 | void | |
185 | gfc_reject_data (gfc_namespace *ns) | |
186 | { | |
187 | gfc_data *d; | |
188 | ||
189 | while (ns->data && ns->data != ns->old_data) | |
190 | { | |
191 | d = ns->data->next; | |
192 | free (ns->data); | |
193 | ns->data = d; | |
194 | } | |
195 | } | |
af29c1f0 | 196 | |
b4f45d02 | 197 | static match var_element (gfc_data_variable *); |
198 | ||
199 | /* Match a list of variables terminated by an iterator and a right | |
200 | parenthesis. */ | |
201 | ||
202 | static match | |
1a9745d2 | 203 | var_list (gfc_data_variable *parent) |
b4f45d02 | 204 | { |
205 | gfc_data_variable *tail, var; | |
206 | match m; | |
207 | ||
208 | m = var_element (&var); | |
209 | if (m == MATCH_ERROR) | |
210 | return MATCH_ERROR; | |
211 | if (m == MATCH_NO) | |
212 | goto syntax; | |
213 | ||
214 | tail = gfc_get_data_variable (); | |
215 | *tail = var; | |
216 | ||
217 | parent->list = tail; | |
218 | ||
219 | for (;;) | |
220 | { | |
221 | if (gfc_match_char (',') != MATCH_YES) | |
222 | goto syntax; | |
223 | ||
224 | m = gfc_match_iterator (&parent->iter, 1); | |
225 | if (m == MATCH_YES) | |
226 | break; | |
227 | if (m == MATCH_ERROR) | |
228 | return MATCH_ERROR; | |
229 | ||
230 | m = var_element (&var); | |
231 | if (m == MATCH_ERROR) | |
232 | return MATCH_ERROR; | |
233 | if (m == MATCH_NO) | |
234 | goto syntax; | |
235 | ||
236 | tail->next = gfc_get_data_variable (); | |
237 | tail = tail->next; | |
238 | ||
239 | *tail = var; | |
240 | } | |
241 | ||
242 | if (gfc_match_char (')') != MATCH_YES) | |
243 | goto syntax; | |
244 | return MATCH_YES; | |
245 | ||
246 | syntax: | |
247 | gfc_syntax_error (ST_DATA); | |
248 | return MATCH_ERROR; | |
249 | } | |
250 | ||
251 | ||
252 | /* Match a single element in a data variable list, which can be a | |
253 | variable-iterator list. */ | |
254 | ||
255 | static match | |
c1977dbe | 256 | var_element (gfc_data_variable *new_var) |
b4f45d02 | 257 | { |
258 | match m; | |
259 | gfc_symbol *sym; | |
260 | ||
c1977dbe | 261 | memset (new_var, 0, sizeof (gfc_data_variable)); |
b4f45d02 | 262 | |
263 | if (gfc_match_char ('(') == MATCH_YES) | |
c1977dbe | 264 | return var_list (new_var); |
b4f45d02 | 265 | |
c1977dbe | 266 | m = gfc_match_variable (&new_var->expr, 0); |
b4f45d02 | 267 | if (m != MATCH_YES) |
268 | return m; | |
269 | ||
c1977dbe | 270 | sym = new_var->expr->symtree->n.sym; |
b4f45d02 | 271 | |
40de255b | 272 | /* Symbol should already have an associated type. */ |
60e19868 | 273 | if (!gfc_check_symbol_typed (sym, gfc_current_ns, false, gfc_current_locus)) |
40de255b | 274 | return MATCH_ERROR; |
275 | ||
1a9745d2 | 276 | if (!sym->attr.function && gfc_current_ns->parent |
277 | && gfc_current_ns->parent == sym->ns) | |
b4f45d02 | 278 | { |
716da296 | 279 | gfc_error ("Host associated variable %qs may not be in the DATA " |
7698a624 | 280 | "statement at %C", sym->name); |
b4f45d02 | 281 | return MATCH_ERROR; |
282 | } | |
283 | ||
c8df3e9c | 284 | if (gfc_current_state () != COMP_BLOCK_DATA |
1a9745d2 | 285 | && sym->attr.in_common |
60e19868 | 286 | && !gfc_notify_std (GFC_STD_GNU, "initialization of " |
0d2b3c9c | 287 | "common block variable %qs in DATA statement at %C", |
60e19868 | 288 | sym->name)) |
c8df3e9c | 289 | return MATCH_ERROR; |
b4f45d02 | 290 | |
60e19868 | 291 | if (!gfc_add_data (&sym->attr, sym->name, &new_var->expr->where)) |
b4f45d02 | 292 | return MATCH_ERROR; |
293 | ||
294 | return MATCH_YES; | |
295 | } | |
296 | ||
297 | ||
298 | /* Match the top-level list of data variables. */ | |
299 | ||
300 | static match | |
1a9745d2 | 301 | top_var_list (gfc_data *d) |
b4f45d02 | 302 | { |
c1977dbe | 303 | gfc_data_variable var, *tail, *new_var; |
b4f45d02 | 304 | match m; |
305 | ||
306 | tail = NULL; | |
307 | ||
308 | for (;;) | |
309 | { | |
310 | m = var_element (&var); | |
311 | if (m == MATCH_NO) | |
312 | goto syntax; | |
313 | if (m == MATCH_ERROR) | |
314 | return MATCH_ERROR; | |
315 | ||
c1977dbe | 316 | new_var = gfc_get_data_variable (); |
317 | *new_var = var; | |
b4f45d02 | 318 | |
319 | if (tail == NULL) | |
c1977dbe | 320 | d->var = new_var; |
b4f45d02 | 321 | else |
c1977dbe | 322 | tail->next = new_var; |
b4f45d02 | 323 | |
c1977dbe | 324 | tail = new_var; |
b4f45d02 | 325 | |
326 | if (gfc_match_char ('/') == MATCH_YES) | |
327 | break; | |
328 | if (gfc_match_char (',') != MATCH_YES) | |
329 | goto syntax; | |
330 | } | |
331 | ||
332 | return MATCH_YES; | |
333 | ||
334 | syntax: | |
335 | gfc_syntax_error (ST_DATA); | |
af29c1f0 | 336 | gfc_free_data_all (gfc_current_ns); |
b4f45d02 | 337 | return MATCH_ERROR; |
338 | } | |
339 | ||
340 | ||
341 | static match | |
1a9745d2 | 342 | match_data_constant (gfc_expr **result) |
b4f45d02 | 343 | { |
344 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c2958b6b | 345 | gfc_symbol *sym, *dt_sym = NULL; |
b4f45d02 | 346 | gfc_expr *expr; |
347 | match m; | |
096d4ad9 | 348 | locus old_loc; |
b4f45d02 | 349 | |
350 | m = gfc_match_literal_constant (&expr, 1); | |
351 | if (m == MATCH_YES) | |
352 | { | |
353 | *result = expr; | |
354 | return MATCH_YES; | |
355 | } | |
356 | ||
357 | if (m == MATCH_ERROR) | |
358 | return MATCH_ERROR; | |
359 | ||
360 | m = gfc_match_null (result); | |
361 | if (m != MATCH_NO) | |
362 | return m; | |
363 | ||
096d4ad9 | 364 | old_loc = gfc_current_locus; |
365 | ||
366 | /* Should this be a structure component, try to match it | |
367 | before matching a name. */ | |
368 | m = gfc_match_rvalue (result); | |
369 | if (m == MATCH_ERROR) | |
370 | return m; | |
371 | ||
372 | if (m == MATCH_YES && (*result)->expr_type == EXPR_STRUCTURE) | |
373 | { | |
60e19868 | 374 | if (!gfc_simplify_expr (*result, 0)) |
096d4ad9 | 375 | m = MATCH_ERROR; |
376 | return m; | |
377 | } | |
021ff494 | 378 | else if (m == MATCH_YES) |
379 | gfc_free_expr (*result); | |
096d4ad9 | 380 | |
381 | gfc_current_locus = old_loc; | |
382 | ||
b4f45d02 | 383 | m = gfc_match_name (name); |
384 | if (m != MATCH_YES) | |
385 | return m; | |
386 | ||
387 | if (gfc_find_symbol (name, NULL, 1, &sym)) | |
388 | return MATCH_ERROR; | |
389 | ||
c2958b6b | 390 | if (sym && sym->attr.generic) |
391 | dt_sym = gfc_find_dt_in_generic (sym); | |
392 | ||
b4f45d02 | 393 | if (sym == NULL |
c2958b6b | 394 | || (sym->attr.flavor != FL_PARAMETER |
395 | && (!dt_sym || dt_sym->attr.flavor != FL_DERIVED))) | |
b4f45d02 | 396 | { |
716da296 | 397 | gfc_error ("Symbol %qs must be a PARAMETER in DATA statement at %C", |
b4f45d02 | 398 | name); |
399 | return MATCH_ERROR; | |
400 | } | |
c2958b6b | 401 | else if (dt_sym && dt_sym->attr.flavor == FL_DERIVED) |
402 | return gfc_match_structure_constructor (dt_sym, result); | |
b4f45d02 | 403 | |
f0a51891 | 404 | /* Check to see if the value is an initialization array expression. */ |
405 | if (sym->value->expr_type == EXPR_ARRAY) | |
406 | { | |
407 | gfc_current_locus = old_loc; | |
408 | ||
409 | m = gfc_match_init_expr (result); | |
410 | if (m == MATCH_ERROR) | |
411 | return m; | |
412 | ||
413 | if (m == MATCH_YES) | |
414 | { | |
60e19868 | 415 | if (!gfc_simplify_expr (*result, 0)) |
f0a51891 | 416 | m = MATCH_ERROR; |
417 | ||
418 | if ((*result)->expr_type == EXPR_CONSTANT) | |
419 | return m; | |
420 | else | |
421 | { | |
422 | gfc_error ("Invalid initializer %s in Data statement at %C", name); | |
423 | return MATCH_ERROR; | |
424 | } | |
425 | } | |
426 | } | |
427 | ||
b4f45d02 | 428 | *result = gfc_copy_expr (sym->value); |
429 | return MATCH_YES; | |
430 | } | |
431 | ||
432 | ||
433 | /* Match a list of values in a DATA statement. The leading '/' has | |
434 | already been seen at this point. */ | |
435 | ||
436 | static match | |
1a9745d2 | 437 | top_val_list (gfc_data *data) |
b4f45d02 | 438 | { |
c1977dbe | 439 | gfc_data_value *new_val, *tail; |
b4f45d02 | 440 | gfc_expr *expr; |
b4f45d02 | 441 | match m; |
442 | ||
443 | tail = NULL; | |
444 | ||
445 | for (;;) | |
446 | { | |
447 | m = match_data_constant (&expr); | |
448 | if (m == MATCH_NO) | |
449 | goto syntax; | |
450 | if (m == MATCH_ERROR) | |
451 | return MATCH_ERROR; | |
452 | ||
c1977dbe | 453 | new_val = gfc_get_data_value (); |
454 | mpz_init (new_val->repeat); | |
b4f45d02 | 455 | |
456 | if (tail == NULL) | |
c1977dbe | 457 | data->value = new_val; |
b4f45d02 | 458 | else |
c1977dbe | 459 | tail->next = new_val; |
b4f45d02 | 460 | |
c1977dbe | 461 | tail = new_val; |
b4f45d02 | 462 | |
463 | if (expr->ts.type != BT_INTEGER || gfc_match_char ('*') != MATCH_YES) | |
464 | { | |
465 | tail->expr = expr; | |
7d74abfd | 466 | mpz_set_ui (tail->repeat, 1); |
b4f45d02 | 467 | } |
468 | else | |
469 | { | |
021ff494 | 470 | mpz_set (tail->repeat, expr->value.integer); |
b4f45d02 | 471 | gfc_free_expr (expr); |
b4f45d02 | 472 | |
473 | m = match_data_constant (&tail->expr); | |
474 | if (m == MATCH_NO) | |
475 | goto syntax; | |
476 | if (m == MATCH_ERROR) | |
477 | return MATCH_ERROR; | |
478 | } | |
479 | ||
480 | if (gfc_match_char ('/') == MATCH_YES) | |
481 | break; | |
482 | if (gfc_match_char (',') == MATCH_NO) | |
483 | goto syntax; | |
484 | } | |
485 | ||
486 | return MATCH_YES; | |
487 | ||
488 | syntax: | |
489 | gfc_syntax_error (ST_DATA); | |
af29c1f0 | 490 | gfc_free_data_all (gfc_current_ns); |
b4f45d02 | 491 | return MATCH_ERROR; |
492 | } | |
493 | ||
494 | ||
495 | /* Matches an old style initialization. */ | |
496 | ||
497 | static match | |
498 | match_old_style_init (const char *name) | |
499 | { | |
500 | match m; | |
501 | gfc_symtree *st; | |
344b937e | 502 | gfc_symbol *sym; |
b4f45d02 | 503 | gfc_data *newdata; |
504 | ||
505 | /* Set up data structure to hold initializers. */ | |
506 | gfc_find_sym_tree (name, NULL, 0, &st); | |
344b937e | 507 | sym = st->n.sym; |
508 | ||
b4f45d02 | 509 | newdata = gfc_get_data (); |
510 | newdata->var = gfc_get_data_variable (); | |
511 | newdata->var->expr = gfc_get_variable_expr (st); | |
5aed5db3 | 512 | newdata->where = gfc_current_locus; |
b4f45d02 | 513 | |
f6d0e37a | 514 | /* Match initial value list. This also eats the terminal '/'. */ |
b4f45d02 | 515 | m = top_val_list (newdata); |
516 | if (m != MATCH_YES) | |
517 | { | |
434f0922 | 518 | free (newdata); |
b4f45d02 | 519 | return m; |
520 | } | |
521 | ||
522 | if (gfc_pure (NULL)) | |
523 | { | |
524 | gfc_error ("Initialization at %C is not allowed in a PURE procedure"); | |
434f0922 | 525 | free (newdata); |
b4f45d02 | 526 | return MATCH_ERROR; |
527 | } | |
c77badf3 | 528 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
8b0a2e85 | 529 | |
344b937e | 530 | /* Mark the variable as having appeared in a data statement. */ |
60e19868 | 531 | if (!gfc_add_data (&sym->attr, sym->name, &sym->declared_at)) |
344b937e | 532 | { |
434f0922 | 533 | free (newdata); |
344b937e | 534 | return MATCH_ERROR; |
535 | } | |
536 | ||
b4f45d02 | 537 | /* Chain in namespace list of DATA initializers. */ |
538 | newdata->next = gfc_current_ns->data; | |
539 | gfc_current_ns->data = newdata; | |
540 | ||
541 | return m; | |
542 | } | |
543 | ||
1a9745d2 | 544 | |
b4f45d02 | 545 | /* Match the stuff following a DATA statement. If ERROR_FLAG is set, |
39fca56b | 546 | we are matching a DATA statement and are therefore issuing an error |
e14bee04 | 547 | if we encounter something unexpected, if not, we're trying to match |
fe06c0d5 | 548 | an old-style initialization expression of the form INTEGER I /2/. */ |
b4f45d02 | 549 | |
550 | match | |
551 | gfc_match_data (void) | |
552 | { | |
c1977dbe | 553 | gfc_data *new_data; |
b4f45d02 | 554 | match m; |
555 | ||
cbbac028 | 556 | set_in_match_data (true); |
1bfea7e8 | 557 | |
b4f45d02 | 558 | for (;;) |
559 | { | |
c1977dbe | 560 | new_data = gfc_get_data (); |
561 | new_data->where = gfc_current_locus; | |
b4f45d02 | 562 | |
c1977dbe | 563 | m = top_var_list (new_data); |
b4f45d02 | 564 | if (m != MATCH_YES) |
565 | goto cleanup; | |
566 | ||
c1977dbe | 567 | m = top_val_list (new_data); |
b4f45d02 | 568 | if (m != MATCH_YES) |
569 | goto cleanup; | |
570 | ||
c1977dbe | 571 | new_data->next = gfc_current_ns->data; |
572 | gfc_current_ns->data = new_data; | |
b4f45d02 | 573 | |
574 | if (gfc_match_eos () == MATCH_YES) | |
575 | break; | |
576 | ||
577 | gfc_match_char (','); /* Optional comma */ | |
578 | } | |
579 | ||
cbbac028 | 580 | set_in_match_data (false); |
1bfea7e8 | 581 | |
b4f45d02 | 582 | if (gfc_pure (NULL)) |
583 | { | |
584 | gfc_error ("DATA statement at %C is not allowed in a PURE procedure"); | |
585 | return MATCH_ERROR; | |
586 | } | |
c77badf3 | 587 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
8b0a2e85 | 588 | |
b4f45d02 | 589 | return MATCH_YES; |
590 | ||
591 | cleanup: | |
cbbac028 | 592 | set_in_match_data (false); |
c1977dbe | 593 | gfc_free_data (new_data); |
b4f45d02 | 594 | return MATCH_ERROR; |
595 | } | |
596 | ||
597 | ||
598 | /************************ Declaration statements *********************/ | |
599 | ||
e97ac7c0 | 600 | |
df084314 | 601 | /* Auxiliary function to merge DIMENSION and CODIMENSION array specs. */ |
e97ac7c0 | 602 | |
60e19868 | 603 | static bool |
e97ac7c0 | 604 | merge_array_spec (gfc_array_spec *from, gfc_array_spec *to, bool copy) |
605 | { | |
606 | int i; | |
607 | ||
9b58b4c7 | 608 | if ((from->type == AS_ASSUMED_RANK && to->corank) |
609 | || (to->type == AS_ASSUMED_RANK && from->corank)) | |
610 | { | |
611 | gfc_error ("The assumed-rank array at %C shall not have a codimension"); | |
60e19868 | 612 | return false; |
9b58b4c7 | 613 | } |
f00f6dd6 | 614 | |
e97ac7c0 | 615 | if (to->rank == 0 && from->rank > 0) |
616 | { | |
617 | to->rank = from->rank; | |
618 | to->type = from->type; | |
619 | to->cray_pointee = from->cray_pointee; | |
620 | to->cp_was_assumed = from->cp_was_assumed; | |
621 | ||
622 | for (i = 0; i < to->corank; i++) | |
623 | { | |
624 | to->lower[from->rank + i] = to->lower[i]; | |
625 | to->upper[from->rank + i] = to->upper[i]; | |
626 | } | |
627 | for (i = 0; i < from->rank; i++) | |
628 | { | |
629 | if (copy) | |
630 | { | |
631 | to->lower[i] = gfc_copy_expr (from->lower[i]); | |
632 | to->upper[i] = gfc_copy_expr (from->upper[i]); | |
633 | } | |
634 | else | |
635 | { | |
636 | to->lower[i] = from->lower[i]; | |
637 | to->upper[i] = from->upper[i]; | |
638 | } | |
639 | } | |
640 | } | |
641 | else if (to->corank == 0 && from->corank > 0) | |
642 | { | |
643 | to->corank = from->corank; | |
644 | to->cotype = from->cotype; | |
645 | ||
646 | for (i = 0; i < from->corank; i++) | |
647 | { | |
648 | if (copy) | |
649 | { | |
650 | to->lower[to->rank + i] = gfc_copy_expr (from->lower[i]); | |
651 | to->upper[to->rank + i] = gfc_copy_expr (from->upper[i]); | |
652 | } | |
653 | else | |
654 | { | |
655 | to->lower[to->rank + i] = from->lower[i]; | |
656 | to->upper[to->rank + i] = from->upper[i]; | |
657 | } | |
658 | } | |
659 | } | |
9b58b4c7 | 660 | |
60e19868 | 661 | return true; |
e97ac7c0 | 662 | } |
663 | ||
664 | ||
4ee9c684 | 665 | /* Match an intent specification. Since this can only happen after an |
666 | INTENT word, a legal intent-spec must follow. */ | |
667 | ||
668 | static sym_intent | |
669 | match_intent_spec (void) | |
670 | { | |
671 | ||
672 | if (gfc_match (" ( in out )") == MATCH_YES) | |
673 | return INTENT_INOUT; | |
674 | if (gfc_match (" ( in )") == MATCH_YES) | |
675 | return INTENT_IN; | |
676 | if (gfc_match (" ( out )") == MATCH_YES) | |
677 | return INTENT_OUT; | |
678 | ||
679 | gfc_error ("Bad INTENT specification at %C"); | |
680 | return INTENT_UNKNOWN; | |
681 | } | |
682 | ||
683 | ||
684 | /* Matches a character length specification, which is either a | |
3e715c81 | 685 | specification expression, '*', or ':'. */ |
4ee9c684 | 686 | |
687 | static match | |
3e715c81 | 688 | char_len_param_value (gfc_expr **expr, bool *deferred) |
4ee9c684 | 689 | { |
294d58d3 | 690 | match m; |
691 | ||
3e715c81 | 692 | *expr = NULL; |
693 | *deferred = false; | |
694 | ||
4ee9c684 | 695 | if (gfc_match_char ('*') == MATCH_YES) |
3e715c81 | 696 | return MATCH_YES; |
697 | ||
698 | if (gfc_match_char (':') == MATCH_YES) | |
4ee9c684 | 699 | { |
34bf7ba5 | 700 | if (!gfc_notify_std (GFC_STD_F2003, "deferred type parameter at %C")) |
3e715c81 | 701 | return MATCH_ERROR; |
702 | ||
703 | *deferred = true; | |
704 | ||
4ee9c684 | 705 | return MATCH_YES; |
706 | } | |
707 | ||
294d58d3 | 708 | m = gfc_match_expr (expr); |
40de255b | 709 | |
34bf7ba5 | 710 | if (m == MATCH_NO || m == MATCH_ERROR) |
711 | return m; | |
712 | ||
713 | if (!gfc_expr_check_typed (*expr, gfc_current_ns, false)) | |
40de255b | 714 | return MATCH_ERROR; |
715 | ||
34bf7ba5 | 716 | if ((*expr)->expr_type == EXPR_FUNCTION) |
294d58d3 | 717 | { |
9c5a8acc | 718 | if ((*expr)->ts.type == BT_INTEGER |
719 | || ((*expr)->ts.type == BT_UNKNOWN | |
720 | && strcmp((*expr)->symtree->name, "null") != 0)) | |
721 | return MATCH_YES; | |
722 | ||
723 | goto syntax; | |
724 | } | |
725 | else if ((*expr)->expr_type == EXPR_CONSTANT) | |
726 | { | |
727 | /* F2008, 4.4.3.1: The length is a type parameter; its kind is | |
728 | processor dependent and its value is greater than or equal to zero. | |
729 | F2008, 4.4.3.2: If the character length parameter value evaluates | |
730 | to a negative value, the length of character entities declared | |
731 | is zero. */ | |
732 | ||
733 | if ((*expr)->ts.type == BT_INTEGER) | |
294d58d3 | 734 | { |
9c5a8acc | 735 | if (mpz_cmp_si ((*expr)->value.integer, 0) < 0) |
736 | mpz_set_si ((*expr)->value.integer, 0); | |
294d58d3 | 737 | } |
9c5a8acc | 738 | else |
739 | goto syntax; | |
294d58d3 | 740 | } |
9c5a8acc | 741 | else if ((*expr)->expr_type == EXPR_ARRAY) |
742 | goto syntax; | |
743 | else if ((*expr)->expr_type == EXPR_VARIABLE) | |
744 | { | |
745 | gfc_expr *e; | |
746 | ||
747 | e = gfc_copy_expr (*expr); | |
748 | ||
749 | /* This catches the invalid code "[character(m(2:3)) :: 'x', 'y']", | |
750 | which causes an ICE if gfc_reduce_init_expr() is called. */ | |
47977082 | 751 | if (e->ref && e->ref->type == REF_ARRAY |
752 | && e->ref->u.ar.type == AR_UNKNOWN | |
9c5a8acc | 753 | && e->ref->u.ar.dimen_type[0] == DIMEN_RANGE) |
754 | goto syntax; | |
755 | ||
756 | gfc_reduce_init_expr (e); | |
34bf7ba5 | 757 | |
47977082 | 758 | if ((e->ref && e->ref->type == REF_ARRAY |
759 | && e->ref->u.ar.type != AR_ELEMENT) | |
9c5a8acc | 760 | || (!e->ref && e->expr_type == EXPR_ARRAY)) |
761 | { | |
762 | gfc_free_expr (e); | |
763 | goto syntax; | |
764 | } | |
765 | ||
766 | gfc_free_expr (e); | |
767 | } | |
34bf7ba5 | 768 | |
294d58d3 | 769 | return m; |
770 | ||
771 | syntax: | |
9c5a8acc | 772 | gfc_error ("Scalar INTEGER expression expected at %L", &(*expr)->where); |
294d58d3 | 773 | return MATCH_ERROR; |
4ee9c684 | 774 | } |
775 | ||
776 | ||
777 | /* A character length is a '*' followed by a literal integer or a | |
778 | char_len_param_value in parenthesis. */ | |
779 | ||
780 | static match | |
ae0426ce | 781 | match_char_length (gfc_expr **expr, bool *deferred, bool obsolescent_check) |
4ee9c684 | 782 | { |
3bd3b616 | 783 | int length; |
4ee9c684 | 784 | match m; |
785 | ||
8db94b3b | 786 | *deferred = false; |
4ee9c684 | 787 | m = gfc_match_char ('*'); |
788 | if (m != MATCH_YES) | |
789 | return m; | |
790 | ||
3bd3b616 | 791 | m = gfc_match_small_literal_int (&length, NULL); |
4ee9c684 | 792 | if (m == MATCH_ERROR) |
793 | return m; | |
794 | ||
795 | if (m == MATCH_YES) | |
796 | { | |
ae0426ce | 797 | if (obsolescent_check |
60e19868 | 798 | && !gfc_notify_std (GFC_STD_F95_OBS, "Old-style character length at %C")) |
8e9b41f0 | 799 | return MATCH_ERROR; |
126387b5 | 800 | *expr = gfc_get_int_expr (gfc_default_integer_kind, NULL, length); |
4ee9c684 | 801 | return m; |
802 | } | |
803 | ||
804 | if (gfc_match_char ('(') == MATCH_NO) | |
805 | goto syntax; | |
806 | ||
3e715c81 | 807 | m = char_len_param_value (expr, deferred); |
077932f9 | 808 | if (m != MATCH_YES && gfc_matching_function) |
809 | { | |
810 | gfc_undo_symbols (); | |
811 | m = MATCH_YES; | |
812 | } | |
813 | ||
4ee9c684 | 814 | if (m == MATCH_ERROR) |
815 | return m; | |
816 | if (m == MATCH_NO) | |
817 | goto syntax; | |
818 | ||
819 | if (gfc_match_char (')') == MATCH_NO) | |
820 | { | |
821 | gfc_free_expr (*expr); | |
822 | *expr = NULL; | |
823 | goto syntax; | |
824 | } | |
825 | ||
826 | return MATCH_YES; | |
827 | ||
828 | syntax: | |
829 | gfc_error ("Syntax error in character length specification at %C"); | |
830 | return MATCH_ERROR; | |
831 | } | |
832 | ||
833 | ||
ee893be6 | 834 | /* Special subroutine for finding a symbol. Check if the name is found |
835 | in the current name space. If not, and we're compiling a function or | |
836 | subroutine and the parent compilation unit is an interface, then check | |
837 | to see if the name we've been given is the name of the interface | |
838 | (located in another namespace). */ | |
4ee9c684 | 839 | |
840 | static int | |
36b0a1b0 | 841 | find_special (const char *name, gfc_symbol **result, bool allow_subroutine) |
4ee9c684 | 842 | { |
843 | gfc_state_data *s; | |
36b0a1b0 | 844 | gfc_symtree *st; |
ee893be6 | 845 | int i; |
4ee9c684 | 846 | |
36b0a1b0 | 847 | i = gfc_get_sym_tree (name, NULL, &st, allow_subroutine); |
e14bee04 | 848 | if (i == 0) |
36b0a1b0 | 849 | { |
850 | *result = st ? st->n.sym : NULL; | |
851 | goto end; | |
852 | } | |
e14bee04 | 853 | |
4ee9c684 | 854 | if (gfc_current_state () != COMP_SUBROUTINE |
855 | && gfc_current_state () != COMP_FUNCTION) | |
ee893be6 | 856 | goto end; |
4ee9c684 | 857 | |
858 | s = gfc_state_stack->previous; | |
859 | if (s == NULL) | |
ee893be6 | 860 | goto end; |
4ee9c684 | 861 | |
862 | if (s->state != COMP_INTERFACE) | |
ee893be6 | 863 | goto end; |
4ee9c684 | 864 | if (s->sym == NULL) |
f6d0e37a | 865 | goto end; /* Nameless interface. */ |
4ee9c684 | 866 | |
867 | if (strcmp (name, s->sym->name) == 0) | |
868 | { | |
869 | *result = s->sym; | |
870 | return 0; | |
871 | } | |
872 | ||
ee893be6 | 873 | end: |
874 | return i; | |
4ee9c684 | 875 | } |
876 | ||
877 | ||
878 | /* Special subroutine for getting a symbol node associated with a | |
879 | procedure name, used in SUBROUTINE and FUNCTION statements. The | |
880 | symbol is created in the parent using with symtree node in the | |
881 | child unit pointing to the symbol. If the current namespace has no | |
882 | parent, then the symbol is just created in the current unit. */ | |
883 | ||
884 | static int | |
1a9745d2 | 885 | get_proc_name (const char *name, gfc_symbol **result, bool module_fcn_entry) |
4ee9c684 | 886 | { |
887 | gfc_symtree *st; | |
888 | gfc_symbol *sym; | |
2ddb8ed9 | 889 | int rc = 0; |
4ee9c684 | 890 | |
d77f260f | 891 | /* Module functions have to be left in their own namespace because |
892 | they have potentially (almost certainly!) already been referenced. | |
893 | In this sense, they are rather like external functions. This is | |
894 | fixed up in resolve.c(resolve_entries), where the symbol name- | |
895 | space is set to point to the master function, so that the fake | |
896 | result mechanism can work. */ | |
897 | if (module_fcn_entry) | |
861d824f | 898 | { |
899 | /* Present if entry is declared to be a module procedure. */ | |
900 | rc = gfc_find_symbol (name, gfc_current_ns->parent, 0, result); | |
c6a05992 | 901 | |
861d824f | 902 | if (*result == NULL) |
903 | rc = gfc_get_symbol (name, NULL, result); | |
a78f714d | 904 | else if (!gfc_get_symbol (name, NULL, &sym) && sym |
c6a05992 | 905 | && (*result)->ts.type == BT_UNKNOWN |
906 | && sym->attr.flavor == FL_UNKNOWN) | |
907 | /* Pick up the typespec for the entry, if declared in the function | |
908 | body. Note that this symbol is FL_UNKNOWN because it will | |
909 | only have appeared in a type declaration. The local symtree | |
910 | is set to point to the module symbol and a unique symtree | |
911 | to the local version. This latter ensures a correct clearing | |
912 | of the symbols. */ | |
a78f714d | 913 | { |
914 | /* If the ENTRY proceeds its specification, we need to ensure | |
915 | that this does not raise a "has no IMPLICIT type" error. */ | |
916 | if (sym->ts.type == BT_UNKNOWN) | |
2168078b | 917 | sym->attr.untyped = 1; |
a78f714d | 918 | |
2168078b | 919 | (*result)->ts = sym->ts; |
a78f714d | 920 | |
921 | /* Put the symbol in the procedure namespace so that, should | |
69b1505f | 922 | the ENTRY precede its specification, the specification |
a78f714d | 923 | can be applied. */ |
924 | (*result)->ns = gfc_current_ns; | |
925 | ||
926 | gfc_find_sym_tree (name, gfc_current_ns, 0, &st); | |
927 | st->n.sym = *result; | |
928 | st = gfc_get_unique_symtree (gfc_current_ns); | |
929 | st->n.sym = sym; | |
930 | } | |
861d824f | 931 | } |
858f9894 | 932 | else |
933 | rc = gfc_get_symbol (name, gfc_current_ns->parent, result); | |
4ee9c684 | 934 | |
2ddb8ed9 | 935 | if (rc) |
936 | return rc; | |
937 | ||
858f9894 | 938 | sym = *result; |
97323566 | 939 | if (sym->attr.proc == PROC_ST_FUNCTION) |
940 | return rc; | |
4ee9c684 | 941 | |
4b8eb6ca | 942 | if (sym->attr.module_procedure |
943 | && sym->attr.if_source == IFSRC_IFBODY) | |
944 | { | |
945 | /* Create a partially populated interface symbol to carry the | |
946 | characteristics of the procedure and the result. */ | |
947 | sym->ts.interface = gfc_new_symbol (name, sym->ns); | |
948 | gfc_add_type (sym->ts.interface, &(sym->ts), | |
949 | &gfc_current_locus); | |
950 | gfc_copy_attr (&sym->ts.interface->attr, &sym->attr, NULL); | |
951 | if (sym->attr.dimension) | |
952 | sym->ts.interface->as = gfc_copy_array_spec (sym->as); | |
953 | ||
954 | /* Ideally, at this point, a copy would be made of the formal | |
955 | arguments and their namespace. However, this does not appear | |
956 | to be necessary, albeit at the expense of not being able to | |
957 | use gfc_compare_interfaces directly. */ | |
958 | ||
959 | if (sym->result && sym->result != sym) | |
960 | { | |
961 | sym->ts.interface->result = sym->result; | |
962 | sym->result = NULL; | |
963 | } | |
964 | else if (sym->result) | |
965 | { | |
966 | sym->ts.interface->result = sym->ts.interface; | |
967 | } | |
968 | } | |
969 | else if (sym && !sym->gfc_new | |
970 | && gfc_current_state () != COMP_INTERFACE) | |
858f9894 | 971 | { |
16f49153 | 972 | /* Trap another encompassed procedure with the same name. All |
973 | these conditions are necessary to avoid picking up an entry | |
974 | whose name clashes with that of the encompassing procedure; | |
975 | this is handled using gsymbols to register unique,globally | |
976 | accessible names. */ | |
858f9894 | 977 | if (sym->attr.flavor != 0 |
1a9745d2 | 978 | && sym->attr.proc != 0 |
979 | && (sym->attr.subroutine || sym->attr.function) | |
980 | && sym->attr.if_source != IFSRC_UNKNOWN) | |
e87256b0 | 981 | gfc_error_now ("Procedure %qs at %C is already defined at %L", |
982 | name, &sym->declared_at); | |
858f9894 | 983 | |
5720fd2f | 984 | /* Trap a procedure with a name the same as interface in the |
985 | encompassing scope. */ | |
986 | if (sym->attr.generic != 0 | |
db697236 | 987 | && (sym->attr.subroutine || sym->attr.function) |
988 | && !sym->attr.mod_proc) | |
e87256b0 | 989 | gfc_error_now ("Name %qs at %C is already defined" |
990 | " as a generic interface at %L", | |
991 | name, &sym->declared_at); | |
5720fd2f | 992 | |
858f9894 | 993 | /* Trap declarations of attributes in encompassing scope. The |
994 | signature for this is that ts.kind is set. Legitimate | |
995 | references only set ts.type. */ | |
996 | if (sym->ts.kind != 0 | |
1a9745d2 | 997 | && !sym->attr.implicit_type |
998 | && sym->attr.proc == 0 | |
999 | && gfc_current_ns->parent != NULL | |
1000 | && sym->attr.access == 0 | |
1001 | && !module_fcn_entry) | |
e87256b0 | 1002 | gfc_error_now ("Procedure %qs at %C has an explicit interface " |
1003 | "and must not have attributes declared at %L", | |
1004 | name, &sym->declared_at); | |
858f9894 | 1005 | } |
1006 | ||
1007 | if (gfc_current_ns->parent == NULL || *result == NULL) | |
1008 | return rc; | |
4ee9c684 | 1009 | |
d77f260f | 1010 | /* Module function entries will already have a symtree in |
1011 | the current namespace but will need one at module level. */ | |
1012 | if (module_fcn_entry) | |
861d824f | 1013 | { |
1014 | /* Present if entry is declared to be a module procedure. */ | |
1015 | rc = gfc_find_sym_tree (name, gfc_current_ns->parent, 0, &st); | |
1016 | if (st == NULL) | |
1017 | st = gfc_new_symtree (&gfc_current_ns->parent->sym_root, name); | |
1018 | } | |
d77f260f | 1019 | else |
1020 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); | |
4ee9c684 | 1021 | |
4ee9c684 | 1022 | st->n.sym = sym; |
1023 | sym->refs++; | |
1024 | ||
f6d0e37a | 1025 | /* See if the procedure should be a module procedure. */ |
4ee9c684 | 1026 | |
d77f260f | 1027 | if (((sym->ns->proc_name != NULL |
861d824f | 1028 | && sym->ns->proc_name->attr.flavor == FL_MODULE |
1029 | && sym->attr.proc != PROC_MODULE) | |
1030 | || (module_fcn_entry && sym->attr.proc != PROC_MODULE)) | |
60e19868 | 1031 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
4ee9c684 | 1032 | rc = 2; |
1033 | ||
1034 | return rc; | |
1035 | } | |
1036 | ||
1037 | ||
c5d33754 | 1038 | /* Verify that the given symbol representing a parameter is C |
1039 | interoperable, by checking to see if it was marked as such after | |
1040 | its declaration. If the given symbol is not interoperable, a | |
1041 | warning is reported, thus removing the need to return the status to | |
1042 | the calling function. The standard does not require the user use | |
1043 | one of the iso_c_binding named constants to declare an | |
1044 | interoperable parameter, but we can't be sure if the param is C | |
1045 | interop or not if the user doesn't. For example, integer(4) may be | |
1046 | legal Fortran, but doesn't have meaning in C. It may interop with | |
1047 | a number of the C types, which causes a problem because the | |
1048 | compiler can't know which one. This code is almost certainly not | |
1049 | portable, and the user will get what they deserve if the C type | |
1050 | across platforms isn't always interoperable with integer(4). If | |
1051 | the user had used something like integer(c_int) or integer(c_long), | |
1052 | the compiler could have automatically handled the varying sizes | |
1053 | across platforms. */ | |
1054 | ||
60e19868 | 1055 | bool |
2564c57a | 1056 | gfc_verify_c_interop_param (gfc_symbol *sym) |
c5d33754 | 1057 | { |
1058 | int is_c_interop = 0; | |
60e19868 | 1059 | bool retval = true; |
c5d33754 | 1060 | |
1061 | /* We check implicitly typed variables in symbol.c:gfc_set_default_type(). | |
1062 | Don't repeat the checks here. */ | |
1063 | if (sym->attr.implicit_type) | |
60e19868 | 1064 | return true; |
8db94b3b | 1065 | |
c5d33754 | 1066 | /* For subroutines or functions that are passed to a BIND(C) procedure, |
1067 | they're interoperable if they're BIND(C) and their params are all | |
1068 | interoperable. */ | |
1069 | if (sym->attr.flavor == FL_PROCEDURE) | |
1070 | { | |
1071 | if (sym->attr.is_bind_c == 0) | |
1072 | { | |
bf79c656 | 1073 | gfc_error_now ("Procedure %qs at %L must have the BIND(C) " |
1074 | "attribute to be C interoperable", sym->name, | |
1075 | &(sym->declared_at)); | |
60e19868 | 1076 | return false; |
c5d33754 | 1077 | } |
1078 | else | |
1079 | { | |
1080 | if (sym->attr.is_c_interop == 1) | |
1081 | /* We've already checked this procedure; don't check it again. */ | |
60e19868 | 1082 | return true; |
c5d33754 | 1083 | else |
1084 | return verify_bind_c_sym (sym, &(sym->ts), sym->attr.in_common, | |
1085 | sym->common_block); | |
1086 | } | |
1087 | } | |
8db94b3b | 1088 | |
c5d33754 | 1089 | /* See if we've stored a reference to a procedure that owns sym. */ |
1090 | if (sym->ns != NULL && sym->ns->proc_name != NULL) | |
1091 | { | |
1092 | if (sym->ns->proc_name->attr.is_bind_c == 1) | |
1093 | { | |
60e19868 | 1094 | is_c_interop = (gfc_verify_c_interop(&(sym->ts)) ? 1 : 0); |
c5d33754 | 1095 | |
1096 | if (is_c_interop != 1) | |
1097 | { | |
1098 | /* Make personalized messages to give better feedback. */ | |
1099 | if (sym->ts.type == BT_DERIVED) | |
716da296 | 1100 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1101 | "BIND(C) procedure %qs but is not C interoperable " | |
1102 | "because derived type %qs is not C interoperable", | |
c5d33754 | 1103 | sym->name, &(sym->declared_at), |
8db94b3b | 1104 | sym->ns->proc_name->name, |
eeebe20b | 1105 | sym->ts.u.derived->name); |
2564c57a | 1106 | else if (sym->ts.type == BT_CLASS) |
716da296 | 1107 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1108 | "BIND(C) procedure %qs but is not C interoperable " | |
2564c57a | 1109 | "because it is polymorphic", |
1110 | sym->name, &(sym->declared_at), | |
1111 | sym->ns->proc_name->name); | |
bf79c656 | 1112 | else if (warn_c_binding_type) |
4166acc7 | 1113 | gfc_warning (OPT_Wc_binding_type, |
1114 | "Variable %qs at %L is a dummy argument of the " | |
1115 | "BIND(C) procedure %qs but may not be C " | |
c5d33754 | 1116 | "interoperable", |
1117 | sym->name, &(sym->declared_at), | |
1118 | sym->ns->proc_name->name); | |
1119 | } | |
e4eda3ec | 1120 | |
1121 | /* Character strings are only C interoperable if they have a | |
1122 | length of 1. */ | |
1123 | if (sym->ts.type == BT_CHARACTER) | |
1124 | { | |
eeebe20b | 1125 | gfc_charlen *cl = sym->ts.u.cl; |
e4eda3ec | 1126 | if (!cl || !cl->length || cl->length->expr_type != EXPR_CONSTANT |
1127 | || mpz_cmp_si (cl->length->value.integer, 1) != 0) | |
1128 | { | |
716da296 | 1129 | gfc_error ("Character argument %qs at %L " |
e4eda3ec | 1130 | "must be length 1 because " |
716da296 | 1131 | "procedure %qs is BIND(C)", |
e4eda3ec | 1132 | sym->name, &sym->declared_at, |
1133 | sym->ns->proc_name->name); | |
60e19868 | 1134 | retval = false; |
e4eda3ec | 1135 | } |
1136 | } | |
1137 | ||
c5d33754 | 1138 | /* We have to make sure that any param to a bind(c) routine does |
1139 | not have the allocatable, pointer, or optional attributes, | |
1140 | according to J3/04-007, section 5.1. */ | |
a435dc3a | 1141 | if (sym->attr.allocatable == 1 |
0d2b3c9c | 1142 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable %qs at %L with " |
1143 | "ALLOCATABLE attribute in procedure %qs " | |
a435dc3a | 1144 | "with BIND(C)", sym->name, |
1145 | &(sym->declared_at), | |
1146 | sym->ns->proc_name->name)) | |
1147 | retval = false; | |
1148 | ||
1149 | if (sym->attr.pointer == 1 | |
0d2b3c9c | 1150 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable %qs at %L with " |
1151 | "POINTER attribute in procedure %qs " | |
a435dc3a | 1152 | "with BIND(C)", sym->name, |
1153 | &(sym->declared_at), | |
1154 | sym->ns->proc_name->name)) | |
1155 | retval = false; | |
1156 | ||
1157 | if ((sym->attr.allocatable || sym->attr.pointer) && !sym->as) | |
c5d33754 | 1158 | { |
716da296 | 1159 | gfc_error ("Scalar variable %qs at %L with POINTER or " |
1160 | "ALLOCATABLE in procedure %qs with BIND(C) is not yet" | |
a435dc3a | 1161 | " supported", sym->name, &(sym->declared_at), |
c5d33754 | 1162 | sym->ns->proc_name->name); |
60e19868 | 1163 | retval = false; |
c5d33754 | 1164 | } |
1165 | ||
495e197c | 1166 | if (sym->attr.optional == 1 && sym->attr.value) |
c5d33754 | 1167 | { |
716da296 | 1168 | gfc_error ("Variable %qs at %L cannot have both the OPTIONAL " |
1169 | "and the VALUE attribute because procedure %qs " | |
495e197c | 1170 | "is BIND(C)", sym->name, &(sym->declared_at), |
c5d33754 | 1171 | sym->ns->proc_name->name); |
60e19868 | 1172 | retval = false; |
c5d33754 | 1173 | } |
495e197c | 1174 | else if (sym->attr.optional == 1 |
0d2b3c9c | 1175 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable %qs " |
60e19868 | 1176 | "at %L with OPTIONAL attribute in " |
0d2b3c9c | 1177 | "procedure %qs which is BIND(C)", |
60e19868 | 1178 | sym->name, &(sym->declared_at), |
1179 | sym->ns->proc_name->name)) | |
1180 | retval = false; | |
c5d33754 | 1181 | |
1182 | /* Make sure that if it has the dimension attribute, that it is | |
9350ae4e | 1183 | either assumed size or explicit shape. Deferred shape is already |
1184 | covered by the pointer/allocatable attribute. */ | |
1185 | if (sym->as != NULL && sym->as->type == AS_ASSUMED_SHAPE | |
389a9009 | 1186 | && !gfc_notify_std (GFC_STD_F2008_TS, "Assumed-shape array %qs " |
60e19868 | 1187 | "at %L as dummy argument to the BIND(C) " |
1188 | "procedure '%s' at %L", sym->name, | |
1189 | &(sym->declared_at), | |
1190 | sym->ns->proc_name->name, | |
1191 | &(sym->ns->proc_name->declared_at))) | |
1192 | retval = false; | |
c5d33754 | 1193 | } |
1194 | } | |
1195 | ||
1196 | return retval; | |
1197 | } | |
1198 | ||
1199 | ||
1de1b1a9 | 1200 | |
c5d33754 | 1201 | /* Function called by variable_decl() that adds a name to the symbol table. */ |
4ee9c684 | 1202 | |
60e19868 | 1203 | static bool |
3e715c81 | 1204 | build_sym (const char *name, gfc_charlen *cl, bool cl_deferred, |
1a9745d2 | 1205 | gfc_array_spec **as, locus *var_locus) |
4ee9c684 | 1206 | { |
1207 | symbol_attribute attr; | |
1208 | gfc_symbol *sym; | |
1209 | ||
ee893be6 | 1210 | if (gfc_get_symbol (name, NULL, &sym)) |
60e19868 | 1211 | return false; |
4ee9c684 | 1212 | |
f6d0e37a | 1213 | /* Start updating the symbol table. Add basic type attribute if present. */ |
4ee9c684 | 1214 | if (current_ts.type != BT_UNKNOWN |
1a9745d2 | 1215 | && (sym->attr.implicit_type == 0 |
1216 | || !gfc_compare_types (&sym->ts, ¤t_ts)) | |
60e19868 | 1217 | && !gfc_add_type (sym, ¤t_ts, var_locus)) |
1218 | return false; | |
4ee9c684 | 1219 | |
1220 | if (sym->ts.type == BT_CHARACTER) | |
3e715c81 | 1221 | { |
1222 | sym->ts.u.cl = cl; | |
1223 | sym->ts.deferred = cl_deferred; | |
1224 | } | |
4ee9c684 | 1225 | |
1226 | /* Add dimension attribute if present. */ | |
60e19868 | 1227 | if (!gfc_set_array_spec (sym, *as, var_locus)) |
1228 | return false; | |
4ee9c684 | 1229 | *as = NULL; |
1230 | ||
1231 | /* Add attribute to symbol. The copy is so that we can reset the | |
1232 | dimension attribute. */ | |
1233 | attr = current_attr; | |
1234 | attr.dimension = 0; | |
aff518b0 | 1235 | attr.codimension = 0; |
4ee9c684 | 1236 | |
60e19868 | 1237 | if (!gfc_copy_attr (&sym->attr, &attr, var_locus)) |
1238 | return false; | |
4ee9c684 | 1239 | |
c5d33754 | 1240 | /* Finish any work that may need to be done for the binding label, |
1241 | if it's a bind(c). The bind(c) attr is found before the symbol | |
1242 | is made, and before the symbol name (for data decls), so the | |
1243 | current_ts is holding the binding label, or nothing if the | |
1244 | name= attr wasn't given. Therefore, test here if we're dealing | |
1245 | with a bind(c) and make sure the binding label is set correctly. */ | |
1246 | if (sym->attr.is_bind_c == 1) | |
1247 | { | |
7b2060ba | 1248 | if (!sym->binding_label) |
c5d33754 | 1249 | { |
825718f9 | 1250 | /* Set the binding label and verify that if a NAME= was specified |
1251 | then only one identifier was in the entity-decl-list. */ | |
60e19868 | 1252 | if (!set_binding_label (&sym->binding_label, sym->name, |
1253 | num_idents_on_line)) | |
1254 | return false; | |
c5d33754 | 1255 | } |
1256 | } | |
1257 | ||
1258 | /* See if we know we're in a common block, and if it's a bind(c) | |
1259 | common then we need to make sure we're an interoperable type. */ | |
1260 | if (sym->attr.in_common == 1) | |
1261 | { | |
1262 | /* Test the common block object. */ | |
1263 | if (sym->common_block != NULL && sym->common_block->is_bind_c == 1 | |
1264 | && sym->ts.is_c_interop != 1) | |
1265 | { | |
bf79c656 | 1266 | gfc_error_now ("Variable %qs in common block %qs at %C " |
c5d33754 | 1267 | "must be declared with a C interoperable " |
bf79c656 | 1268 | "kind since common block %qs is BIND(C)", |
c5d33754 | 1269 | sym->name, sym->common_block->name, |
1270 | sym->common_block->name); | |
1271 | gfc_clear_error (); | |
1272 | } | |
1273 | } | |
1274 | ||
2457a77e | 1275 | sym->attr.implied_index = 0; |
1276 | ||
fa102e56 | 1277 | if (sym->ts.type == BT_CLASS) |
e8393d49 | 1278 | return gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as); |
1de1b1a9 | 1279 | |
60e19868 | 1280 | return true; |
4ee9c684 | 1281 | } |
1282 | ||
1a9745d2 | 1283 | |
a270dc8e | 1284 | /* Set character constant to the given length. The constant will be padded or |
d1a39099 | 1285 | truncated. If we're inside an array constructor without a typespec, we |
1286 | additionally check that all elements have the same length; check_len -1 | |
1287 | means no checking. */ | |
a270dc8e | 1288 | |
1289 | void | |
d1a39099 | 1290 | gfc_set_constant_character_len (int len, gfc_expr *expr, int check_len) |
a270dc8e | 1291 | { |
c32f863c | 1292 | gfc_char_t *s; |
a270dc8e | 1293 | int slen; |
1294 | ||
1295 | gcc_assert (expr->expr_type == EXPR_CONSTANT); | |
b44437b9 | 1296 | gcc_assert (expr->ts.type == BT_CHARACTER); |
a270dc8e | 1297 | |
1298 | slen = expr->value.character.length; | |
1299 | if (len != slen) | |
1300 | { | |
c32f863c | 1301 | s = gfc_get_wide_string (len + 1); |
1302 | memcpy (s, expr->value.character.string, | |
1303 | MIN (len, slen) * sizeof (gfc_char_t)); | |
a270dc8e | 1304 | if (len > slen) |
c32f863c | 1305 | gfc_wide_memset (&s[slen], ' ', len - slen); |
1bfea7e8 | 1306 | |
fed21cc2 | 1307 | if (warn_character_truncation && slen > len) |
bf79c656 | 1308 | gfc_warning_now (OPT_Wcharacter_truncation, |
1309 | "CHARACTER expression at %L is being truncated " | |
1310 | "(%d/%d)", &expr->where, slen, len); | |
1bfea7e8 | 1311 | |
1312 | /* Apply the standard by 'hand' otherwise it gets cleared for | |
1313 | initializers. */ | |
d1a39099 | 1314 | if (check_len != -1 && slen != check_len |
1315 | && !(gfc_option.allow_std & GFC_STD_GNU)) | |
1bfea7e8 | 1316 | gfc_error_now ("The CHARACTER elements of the array constructor " |
1317 | "at %L must have the same length (%d/%d)", | |
d1a39099 | 1318 | &expr->where, slen, check_len); |
1bfea7e8 | 1319 | |
89f528df | 1320 | s[len] = '\0'; |
434f0922 | 1321 | free (expr->value.character.string); |
a270dc8e | 1322 | expr->value.character.string = s; |
1323 | expr->value.character.length = len; | |
1324 | } | |
1325 | } | |
4ee9c684 | 1326 | |
3b6a4b41 | 1327 | |
e14bee04 | 1328 | /* Function to create and update the enumerator history |
3b6a4b41 | 1329 | using the information passed as arguments. |
e14bee04 | 1330 | Pointer "max_enum" is also updated, to point to |
1331 | enum history node containing largest initializer. | |
3b6a4b41 | 1332 | |
1333 | SYM points to the symbol node of enumerator. | |
f6d0e37a | 1334 | INIT points to its enumerator value. */ |
3b6a4b41 | 1335 | |
e14bee04 | 1336 | static void |
1a9745d2 | 1337 | create_enum_history (gfc_symbol *sym, gfc_expr *init) |
3b6a4b41 | 1338 | { |
1339 | enumerator_history *new_enum_history; | |
1340 | gcc_assert (sym != NULL && init != NULL); | |
1341 | ||
48d8ad5a | 1342 | new_enum_history = XCNEW (enumerator_history); |
3b6a4b41 | 1343 | |
1344 | new_enum_history->sym = sym; | |
1345 | new_enum_history->initializer = init; | |
1346 | new_enum_history->next = NULL; | |
1347 | ||
1348 | if (enum_history == NULL) | |
1349 | { | |
1350 | enum_history = new_enum_history; | |
1351 | max_enum = enum_history; | |
1352 | } | |
1353 | else | |
1354 | { | |
1355 | new_enum_history->next = enum_history; | |
1356 | enum_history = new_enum_history; | |
1357 | ||
e14bee04 | 1358 | if (mpz_cmp (max_enum->initializer->value.integer, |
3b6a4b41 | 1359 | new_enum_history->initializer->value.integer) < 0) |
1a9745d2 | 1360 | max_enum = new_enum_history; |
3b6a4b41 | 1361 | } |
1362 | } | |
1363 | ||
1364 | ||
e14bee04 | 1365 | /* Function to free enum kind history. */ |
3b6a4b41 | 1366 | |
e14bee04 | 1367 | void |
1a9745d2 | 1368 | gfc_free_enum_history (void) |
3b6a4b41 | 1369 | { |
e14bee04 | 1370 | enumerator_history *current = enum_history; |
1371 | enumerator_history *next; | |
3b6a4b41 | 1372 | |
1373 | while (current != NULL) | |
1374 | { | |
1375 | next = current->next; | |
434f0922 | 1376 | free (current); |
3b6a4b41 | 1377 | current = next; |
1378 | } | |
1379 | max_enum = NULL; | |
1380 | enum_history = NULL; | |
1381 | } | |
1382 | ||
1383 | ||
4ee9c684 | 1384 | /* Function called by variable_decl() that adds an initialization |
1385 | expression to a symbol. */ | |
1386 | ||
60e19868 | 1387 | static bool |
f6d0e37a | 1388 | add_init_expr_to_sym (const char *name, gfc_expr **initp, locus *var_locus) |
4ee9c684 | 1389 | { |
1390 | symbol_attribute attr; | |
1391 | gfc_symbol *sym; | |
1392 | gfc_expr *init; | |
1393 | ||
1394 | init = *initp; | |
36b0a1b0 | 1395 | if (find_special (name, &sym, false)) |
60e19868 | 1396 | return false; |
4ee9c684 | 1397 | |
1398 | attr = sym->attr; | |
1399 | ||
1400 | /* If this symbol is confirming an implicit parameter type, | |
1401 | then an initialization expression is not allowed. */ | |
1402 | if (attr.flavor == FL_PARAMETER | |
1403 | && sym->value != NULL | |
1404 | && *initp != NULL) | |
1405 | { | |
716da296 | 1406 | gfc_error ("Initializer not allowed for PARAMETER %qs at %C", |
4ee9c684 | 1407 | sym->name); |
60e19868 | 1408 | return false; |
4ee9c684 | 1409 | } |
1410 | ||
1411 | if (init == NULL) | |
1412 | { | |
1413 | /* An initializer is required for PARAMETER declarations. */ | |
1414 | if (attr.flavor == FL_PARAMETER) | |
1415 | { | |
1416 | gfc_error ("PARAMETER at %L is missing an initializer", var_locus); | |
60e19868 | 1417 | return false; |
4ee9c684 | 1418 | } |
1419 | } | |
1420 | else | |
1421 | { | |
1422 | /* If a variable appears in a DATA block, it cannot have an | |
b97f1a18 | 1423 | initializer. */ |
4ee9c684 | 1424 | if (sym->attr.data) |
1425 | { | |
716da296 | 1426 | gfc_error ("Variable %qs at %C with an initializer already " |
1a9745d2 | 1427 | "appears in a DATA statement", sym->name); |
60e19868 | 1428 | return false; |
4ee9c684 | 1429 | } |
1430 | ||
cca3db55 | 1431 | /* Check if the assignment can happen. This has to be put off |
23d075f4 | 1432 | until later for derived type variables and procedure pointers. */ |
4ee9c684 | 1433 | if (sym->ts.type != BT_DERIVED && init->ts.type != BT_DERIVED |
1de1b1a9 | 1434 | && sym->ts.type != BT_CLASS && init->ts.type != BT_CLASS |
8db94b3b | 1435 | && !sym->attr.proc_pointer |
60e19868 | 1436 | && !gfc_check_assign_symbol (sym, NULL, init)) |
1437 | return false; | |
4ee9c684 | 1438 | |
eeebe20b | 1439 | if (sym->ts.type == BT_CHARACTER && sym->ts.u.cl |
da540712 | 1440 | && init->ts.type == BT_CHARACTER) |
a270dc8e | 1441 | { |
1442 | /* Update symbol character length according initializer. */ | |
60e19868 | 1443 | if (!gfc_check_assign_symbol (sym, NULL, init)) |
1444 | return false; | |
da540712 | 1445 | |
eeebe20b | 1446 | if (sym->ts.u.cl->length == NULL) |
a270dc8e | 1447 | { |
03c2a028 | 1448 | int clen; |
f6d0e37a | 1449 | /* If there are multiple CHARACTER variables declared on the |
1450 | same line, we don't want them to share the same length. */ | |
d270ce52 | 1451 | sym->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
e9c873a4 | 1452 | |
03c2a028 | 1453 | if (sym->attr.flavor == FL_PARAMETER) |
1454 | { | |
1455 | if (init->expr_type == EXPR_CONSTANT) | |
1456 | { | |
1457 | clen = init->value.character.length; | |
126387b5 | 1458 | sym->ts.u.cl->length |
1459 | = gfc_get_int_expr (gfc_default_integer_kind, | |
1460 | NULL, clen); | |
03c2a028 | 1461 | } |
1462 | else if (init->expr_type == EXPR_ARRAY) | |
1463 | { | |
9123b22a | 1464 | if (init->ts.u.cl) |
1465 | clen = mpz_get_si (init->ts.u.cl->length->value.integer); | |
1466 | else if (init->value.constructor) | |
1467 | { | |
1468 | gfc_constructor *c; | |
1469 | c = gfc_constructor_first (init->value.constructor); | |
1470 | clen = c->expr->value.character.length; | |
1471 | } | |
1472 | else | |
1473 | gcc_unreachable (); | |
126387b5 | 1474 | sym->ts.u.cl->length |
1475 | = gfc_get_int_expr (gfc_default_integer_kind, | |
1476 | NULL, clen); | |
03c2a028 | 1477 | } |
eeebe20b | 1478 | else if (init->ts.u.cl && init->ts.u.cl->length) |
1479 | sym->ts.u.cl->length = | |
1480 | gfc_copy_expr (sym->value->ts.u.cl->length); | |
03c2a028 | 1481 | } |
a270dc8e | 1482 | } |
1483 | /* Update initializer character length according symbol. */ | |
eeebe20b | 1484 | else if (sym->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
a270dc8e | 1485 | { |
f8e2139b | 1486 | int len; |
1487 | ||
1488 | if (!gfc_specification_expr (sym->ts.u.cl->length)) | |
1489 | return false; | |
1490 | ||
1491 | len = mpz_get_si (sym->ts.u.cl->length->value.integer); | |
a270dc8e | 1492 | |
1493 | if (init->expr_type == EXPR_CONSTANT) | |
d1a39099 | 1494 | gfc_set_constant_character_len (len, init, -1); |
a270dc8e | 1495 | else if (init->expr_type == EXPR_ARRAY) |
1496 | { | |
126387b5 | 1497 | gfc_constructor *c; |
1498 | ||
39908fd9 | 1499 | /* Build a new charlen to prevent simplification from |
1500 | deleting the length before it is resolved. */ | |
d270ce52 | 1501 | init->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
eeebe20b | 1502 | init->ts.u.cl->length = gfc_copy_expr (sym->ts.u.cl->length); |
39908fd9 | 1503 | |
126387b5 | 1504 | for (c = gfc_constructor_first (init->value.constructor); |
1505 | c; c = gfc_constructor_next (c)) | |
1506 | gfc_set_constant_character_len (len, c->expr, -1); | |
a270dc8e | 1507 | } |
1508 | } | |
1509 | } | |
1510 | ||
ae2864a8 | 1511 | /* If sym is implied-shape, set its upper bounds from init. */ |
1512 | if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension | |
1513 | && sym->as->type == AS_IMPLIED_SHAPE) | |
1514 | { | |
1515 | int dim; | |
1516 | ||
1517 | if (init->rank == 0) | |
1518 | { | |
1519 | gfc_error ("Can't initialize implied-shape array at %L" | |
1520 | " with scalar", &sym->declared_at); | |
60e19868 | 1521 | return false; |
ae2864a8 | 1522 | } |
ae2864a8 | 1523 | |
1524 | /* Shape should be present, we get an initialization expression. */ | |
1525 | gcc_assert (init->shape); | |
1526 | ||
1527 | for (dim = 0; dim < sym->as->rank; ++dim) | |
1528 | { | |
1529 | int k; | |
1530 | gfc_expr* lower; | |
1531 | gfc_expr* e; | |
8db94b3b | 1532 | |
ae2864a8 | 1533 | lower = sym->as->lower[dim]; |
1534 | if (lower->expr_type != EXPR_CONSTANT) | |
1535 | { | |
1536 | gfc_error ("Non-constant lower bound in implied-shape" | |
1537 | " declaration at %L", &lower->where); | |
60e19868 | 1538 | return false; |
ae2864a8 | 1539 | } |
1540 | ||
1541 | /* All dimensions must be without upper bound. */ | |
1542 | gcc_assert (!sym->as->upper[dim]); | |
1543 | ||
1544 | k = lower->ts.kind; | |
1545 | e = gfc_get_constant_expr (BT_INTEGER, k, &sym->declared_at); | |
1546 | mpz_add (e->value.integer, | |
1547 | lower->value.integer, init->shape[dim]); | |
1548 | mpz_sub_ui (e->value.integer, e->value.integer, 1); | |
1549 | sym->as->upper[dim] = e; | |
1550 | } | |
1551 | ||
1552 | sym->as->type = AS_EXPLICIT; | |
1553 | } | |
1554 | ||
c5d33754 | 1555 | /* Need to check if the expression we initialized this |
1556 | to was one of the iso_c_binding named constants. If so, | |
1557 | and we're a parameter (constant), let it be iso_c. | |
1558 | For example: | |
1559 | integer(c_int), parameter :: my_int = c_int | |
1560 | integer(my_int) :: my_int_2 | |
1561 | If we mark my_int as iso_c (since we can see it's value | |
1562 | is equal to one of the named constants), then my_int_2 | |
1563 | will be considered C interoperable. */ | |
1564 | if (sym->ts.type != BT_CHARACTER && sym->ts.type != BT_DERIVED) | |
1565 | { | |
1566 | sym->ts.is_iso_c |= init->ts.is_iso_c; | |
1567 | sym->ts.is_c_interop |= init->ts.is_c_interop; | |
1568 | /* attr bits needed for module files. */ | |
1569 | sym->attr.is_iso_c |= init->ts.is_iso_c; | |
1570 | sym->attr.is_c_interop |= init->ts.is_c_interop; | |
1571 | if (init->ts.is_iso_c) | |
1572 | sym->ts.f90_type = init->ts.f90_type; | |
1573 | } | |
126387b5 | 1574 | |
4ee9c684 | 1575 | /* Add initializer. Make sure we keep the ranks sane. */ |
1576 | if (sym->attr.dimension && init->rank == 0) | |
7baa3fb4 | 1577 | { |
1578 | mpz_t size; | |
1579 | gfc_expr *array; | |
7baa3fb4 | 1580 | int n; |
1581 | if (sym->attr.flavor == FL_PARAMETER | |
1582 | && init->expr_type == EXPR_CONSTANT | |
60e19868 | 1583 | && spec_size (sym->as, &size) |
7baa3fb4 | 1584 | && mpz_cmp_si (size, 0) > 0) |
1585 | { | |
126387b5 | 1586 | array = gfc_get_array_expr (init->ts.type, init->ts.kind, |
1587 | &init->where); | |
7baa3fb4 | 1588 | for (n = 0; n < (int)mpz_get_si (size); n++) |
126387b5 | 1589 | gfc_constructor_append_expr (&array->value.constructor, |
1590 | n == 0 | |
1591 | ? init | |
1592 | : gfc_copy_expr (init), | |
1593 | &init->where); | |
8db94b3b | 1594 | |
7baa3fb4 | 1595 | array->shape = gfc_get_shape (sym->as->rank); |
1596 | for (n = 0; n < sym->as->rank; n++) | |
1597 | spec_dimen_size (sym->as, n, &array->shape[n]); | |
1598 | ||
1599 | init = array; | |
1600 | mpz_clear (size); | |
1601 | } | |
1602 | init->rank = sym->as->rank; | |
1603 | } | |
4ee9c684 | 1604 | |
1605 | sym->value = init; | |
3cd3c667 | 1606 | if (sym->attr.save == SAVE_NONE) |
1607 | sym->attr.save = SAVE_IMPLICIT; | |
4ee9c684 | 1608 | *initp = NULL; |
1609 | } | |
1610 | ||
60e19868 | 1611 | return true; |
4ee9c684 | 1612 | } |
1613 | ||
1614 | ||
1615 | /* Function called by variable_decl() that adds a name to a structure | |
1616 | being built. */ | |
1617 | ||
60e19868 | 1618 | static bool |
1a9745d2 | 1619 | build_struct (const char *name, gfc_charlen *cl, gfc_expr **init, |
1620 | gfc_array_spec **as) | |
4ee9c684 | 1621 | { |
1622 | gfc_component *c; | |
60e19868 | 1623 | bool t = true; |
4ee9c684 | 1624 | |
53d2e124 | 1625 | /* F03:C438/C439. If the current symbol is of the same derived type that we're |
4ee9c684 | 1626 | constructing, it must have the pointer attribute. */ |
53d2e124 | 1627 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
eeebe20b | 1628 | && current_ts.u.derived == gfc_current_block () |
4ee9c684 | 1629 | && current_attr.pointer == 0) |
1630 | { | |
1631 | gfc_error ("Component at %C must have the POINTER attribute"); | |
60e19868 | 1632 | return false; |
4ee9c684 | 1633 | } |
1634 | ||
1a9745d2 | 1635 | if (gfc_current_block ()->attr.pointer && (*as)->rank != 0) |
4ee9c684 | 1636 | { |
1637 | if ((*as)->type != AS_DEFERRED && (*as)->type != AS_EXPLICIT) | |
1638 | { | |
1639 | gfc_error ("Array component of structure at %C must have explicit " | |
1640 | "or deferred shape"); | |
60e19868 | 1641 | return false; |
4ee9c684 | 1642 | } |
1643 | } | |
1644 | ||
60e19868 | 1645 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
1646 | return false; | |
4ee9c684 | 1647 | |
1648 | c->ts = current_ts; | |
eeebe20b | 1649 | if (c->ts.type == BT_CHARACTER) |
1650 | c->ts.u.cl = cl; | |
3be2b8d5 | 1651 | c->attr = current_attr; |
4ee9c684 | 1652 | |
1653 | c->initializer = *init; | |
1654 | *init = NULL; | |
1655 | ||
1656 | c->as = *as; | |
1657 | if (c->as != NULL) | |
aff518b0 | 1658 | { |
1659 | if (c->as->corank) | |
1660 | c->attr.codimension = 1; | |
1661 | if (c->as->rank) | |
1662 | c->attr.dimension = 1; | |
1663 | } | |
4ee9c684 | 1664 | *as = NULL; |
1665 | ||
a2f51d5f | 1666 | /* Should this ever get more complicated, combine with similar section |
1667 | in add_init_expr_to_sym into a separate function. */ | |
2d76519f | 1668 | if (c->ts.type == BT_CHARACTER && !c->attr.pointer && c->initializer |
1669 | && c->ts.u.cl | |
eeebe20b | 1670 | && c->ts.u.cl->length && c->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
a2f51d5f | 1671 | { |
d1a39099 | 1672 | int len; |
1673 | ||
eeebe20b | 1674 | gcc_assert (c->ts.u.cl && c->ts.u.cl->length); |
1675 | gcc_assert (c->ts.u.cl->length->expr_type == EXPR_CONSTANT); | |
1676 | gcc_assert (c->ts.u.cl->length->ts.type == BT_INTEGER); | |
d1a39099 | 1677 | |
eeebe20b | 1678 | len = mpz_get_si (c->ts.u.cl->length->value.integer); |
a2f51d5f | 1679 | |
1680 | if (c->initializer->expr_type == EXPR_CONSTANT) | |
d1a39099 | 1681 | gfc_set_constant_character_len (len, c->initializer, -1); |
eeebe20b | 1682 | else if (mpz_cmp (c->ts.u.cl->length->value.integer, |
1683 | c->initializer->ts.u.cl->length->value.integer)) | |
a2f51d5f | 1684 | { |
126387b5 | 1685 | gfc_constructor *ctor; |
1686 | ctor = gfc_constructor_first (c->initializer->value.constructor); | |
d1a39099 | 1687 | |
6e4faf80 | 1688 | if (ctor) |
d1a39099 | 1689 | { |
6e4faf80 | 1690 | int first_len; |
126387b5 | 1691 | bool has_ts = (c->initializer->ts.u.cl |
1692 | && c->initializer->ts.u.cl->length_from_typespec); | |
6e4faf80 | 1693 | |
1694 | /* Remember the length of the first element for checking | |
1695 | that all elements *in the constructor* have the same | |
1696 | length. This need not be the length of the LHS! */ | |
1697 | gcc_assert (ctor->expr->expr_type == EXPR_CONSTANT); | |
1698 | gcc_assert (ctor->expr->ts.type == BT_CHARACTER); | |
1699 | first_len = ctor->expr->value.character.length; | |
1700 | ||
126387b5 | 1701 | for ( ; ctor; ctor = gfc_constructor_next (ctor)) |
1702 | if (ctor->expr->expr_type == EXPR_CONSTANT) | |
d1a39099 | 1703 | { |
126387b5 | 1704 | gfc_set_constant_character_len (len, ctor->expr, |
1705 | has_ts ? -1 : first_len); | |
1706 | ctor->expr->ts.u.cl->length = gfc_copy_expr (c->ts.u.cl->length); | |
d1a39099 | 1707 | } |
d1a39099 | 1708 | } |
a2f51d5f | 1709 | } |
1710 | } | |
1711 | ||
4ee9c684 | 1712 | /* Check array components. */ |
3be2b8d5 | 1713 | if (!c->attr.dimension) |
b3704193 | 1714 | goto scalar; |
4ee9c684 | 1715 | |
3be2b8d5 | 1716 | if (c->attr.pointer) |
4ee9c684 | 1717 | { |
1718 | if (c->as->type != AS_DEFERRED) | |
1719 | { | |
2294b616 | 1720 | gfc_error ("Pointer array component of structure at %C must have a " |
1721 | "deferred shape"); | |
60e19868 | 1722 | t = false; |
2294b616 | 1723 | } |
1724 | } | |
3be2b8d5 | 1725 | else if (c->attr.allocatable) |
2294b616 | 1726 | { |
1727 | if (c->as->type != AS_DEFERRED) | |
1728 | { | |
1729 | gfc_error ("Allocatable component of structure at %C must have a " | |
1730 | "deferred shape"); | |
60e19868 | 1731 | t = false; |
4ee9c684 | 1732 | } |
1733 | } | |
1734 | else | |
1735 | { | |
1736 | if (c->as->type != AS_EXPLICIT) | |
1737 | { | |
1a9745d2 | 1738 | gfc_error ("Array component of structure at %C must have an " |
1739 | "explicit shape"); | |
60e19868 | 1740 | t = false; |
4ee9c684 | 1741 | } |
1742 | } | |
1743 | ||
b3704193 | 1744 | scalar: |
1745 | if (c->ts.type == BT_CLASS) | |
d9c9afea | 1746 | { |
e8393d49 | 1747 | bool t2 = gfc_build_class_symbol (&c->ts, &c->attr, &c->as); |
431a19be | 1748 | |
60e19868 | 1749 | if (t) |
431a19be | 1750 | t = t2; |
d9c9afea | 1751 | } |
1752 | ||
b3704193 | 1753 | return t; |
4ee9c684 | 1754 | } |
1755 | ||
1756 | ||
1757 | /* Match a 'NULL()', and possibly take care of some side effects. */ | |
1758 | ||
1759 | match | |
1a9745d2 | 1760 | gfc_match_null (gfc_expr **result) |
4ee9c684 | 1761 | { |
1762 | gfc_symbol *sym; | |
f9d34e9a | 1763 | match m, m2 = MATCH_NO; |
4ee9c684 | 1764 | |
f9d34e9a | 1765 | if ((m = gfc_match (" null ( )")) == MATCH_ERROR) |
1766 | return MATCH_ERROR; | |
1767 | ||
1768 | if (m == MATCH_NO) | |
1769 | { | |
1770 | locus old_loc; | |
1771 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
1772 | ||
d780a64b | 1773 | if ((m2 = gfc_match (" null (")) != MATCH_YES) |
f9d34e9a | 1774 | return m2; |
1775 | ||
1776 | old_loc = gfc_current_locus; | |
1777 | if ((m2 = gfc_match (" %n ) ", name)) == MATCH_ERROR) | |
1778 | return MATCH_ERROR; | |
1779 | if (m2 != MATCH_YES | |
1780 | && ((m2 = gfc_match (" mold = %n )", name)) == MATCH_ERROR)) | |
1781 | return MATCH_ERROR; | |
1782 | if (m2 == MATCH_NO) | |
1783 | { | |
1784 | gfc_current_locus = old_loc; | |
1785 | return MATCH_NO; | |
1786 | } | |
1787 | } | |
4ee9c684 | 1788 | |
1789 | /* The NULL symbol now has to be/become an intrinsic function. */ | |
1790 | if (gfc_get_symbol ("null", NULL, &sym)) | |
1791 | { | |
1792 | gfc_error ("NULL() initialization at %C is ambiguous"); | |
1793 | return MATCH_ERROR; | |
1794 | } | |
1795 | ||
1796 | gfc_intrinsic_symbol (sym); | |
1797 | ||
1798 | if (sym->attr.proc != PROC_INTRINSIC | |
ddf8ce2d | 1799 | && !(sym->attr.use_assoc && sym->attr.intrinsic) |
60e19868 | 1800 | && (!gfc_add_procedure(&sym->attr, PROC_INTRINSIC, sym->name, NULL) |
1801 | || !gfc_add_function (&sym->attr, sym->name, NULL))) | |
4ee9c684 | 1802 | return MATCH_ERROR; |
1803 | ||
126387b5 | 1804 | *result = gfc_get_null_expr (&gfc_current_locus); |
4ee9c684 | 1805 | |
f9d34e9a | 1806 | /* Invalid per F2008, C512. */ |
1807 | if (m2 == MATCH_YES) | |
1808 | { | |
1809 | gfc_error ("NULL() initialization at %C may not have MOLD"); | |
1810 | return MATCH_ERROR; | |
1811 | } | |
1812 | ||
4ee9c684 | 1813 | return MATCH_YES; |
1814 | } | |
1815 | ||
1816 | ||
23d075f4 | 1817 | /* Match the initialization expr for a data pointer or procedure pointer. */ |
1818 | ||
1819 | static match | |
1820 | match_pointer_init (gfc_expr **init, int procptr) | |
1821 | { | |
1822 | match m; | |
1823 | ||
1824 | if (gfc_pure (NULL) && gfc_state_stack->state != COMP_DERIVED) | |
1825 | { | |
1826 | gfc_error ("Initialization of pointer at %C is not allowed in " | |
1827 | "a PURE procedure"); | |
1828 | return MATCH_ERROR; | |
1829 | } | |
c77badf3 | 1830 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
23d075f4 | 1831 | |
df084314 | 1832 | /* Match NULL() initialization. */ |
23d075f4 | 1833 | m = gfc_match_null (init); |
1834 | if (m != MATCH_NO) | |
1835 | return m; | |
1836 | ||
1837 | /* Match non-NULL initialization. */ | |
f3efaada | 1838 | gfc_matching_ptr_assignment = !procptr; |
23d075f4 | 1839 | gfc_matching_procptr_assignment = procptr; |
1840 | m = gfc_match_rvalue (init); | |
f3efaada | 1841 | gfc_matching_ptr_assignment = 0; |
23d075f4 | 1842 | gfc_matching_procptr_assignment = 0; |
1843 | if (m == MATCH_ERROR) | |
1844 | return MATCH_ERROR; | |
1845 | else if (m == MATCH_NO) | |
1846 | { | |
1847 | gfc_error ("Error in pointer initialization at %C"); | |
1848 | return MATCH_ERROR; | |
1849 | } | |
1850 | ||
7c94d8e5 | 1851 | if (!procptr && !gfc_resolve_expr (*init)) |
1852 | return MATCH_ERROR; | |
8db94b3b | 1853 | |
60e19868 | 1854 | if (!gfc_notify_std (GFC_STD_F2008, "non-NULL pointer " |
1855 | "initialization at %C")) | |
23d075f4 | 1856 | return MATCH_ERROR; |
1857 | ||
1858 | return MATCH_YES; | |
1859 | } | |
1860 | ||
1861 | ||
60e19868 | 1862 | static bool |
f3e89339 | 1863 | check_function_name (char *name) |
1864 | { | |
1865 | /* In functions that have a RESULT variable defined, the function name always | |
1866 | refers to function calls. Therefore, the name is not allowed to appear in | |
1867 | specification statements. When checking this, be careful about | |
1868 | 'hidden' procedure pointer results ('ppr@'). */ | |
1869 | ||
1870 | if (gfc_current_state () == COMP_FUNCTION) | |
1871 | { | |
1872 | gfc_symbol *block = gfc_current_block (); | |
1873 | if (block && block->result && block->result != block | |
1874 | && strcmp (block->result->name, "ppr@") != 0 | |
1875 | && strcmp (block->name, name) == 0) | |
1876 | { | |
716da296 | 1877 | gfc_error ("Function name %qs not allowed at %C", name); |
60e19868 | 1878 | return false; |
f3e89339 | 1879 | } |
1880 | } | |
1881 | ||
60e19868 | 1882 | return true; |
f3e89339 | 1883 | } |
1884 | ||
1885 | ||
4ee9c684 | 1886 | /* Match a variable name with an optional initializer. When this |
1887 | subroutine is called, a variable is expected to be parsed next. | |
1888 | Depending on what is happening at the moment, updates either the | |
1889 | symbol table or the current interface. */ | |
1890 | ||
1891 | static match | |
3923b69f | 1892 | variable_decl (int elem) |
4ee9c684 | 1893 | { |
1894 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
1895 | gfc_expr *initializer, *char_len; | |
1896 | gfc_array_spec *as; | |
b549d2a5 | 1897 | gfc_array_spec *cp_as; /* Extra copy for Cray Pointees. */ |
4ee9c684 | 1898 | gfc_charlen *cl; |
3e715c81 | 1899 | bool cl_deferred; |
4ee9c684 | 1900 | locus var_locus; |
1901 | match m; | |
60e19868 | 1902 | bool t; |
b549d2a5 | 1903 | gfc_symbol *sym; |
4ee9c684 | 1904 | |
1905 | initializer = NULL; | |
1906 | as = NULL; | |
b549d2a5 | 1907 | cp_as = NULL; |
4ee9c684 | 1908 | |
1909 | /* When we get here, we've just matched a list of attributes and | |
1910 | maybe a type and a double colon. The next thing we expect to see | |
1911 | is the name of the symbol. */ | |
1912 | m = gfc_match_name (name); | |
1913 | if (m != MATCH_YES) | |
1914 | goto cleanup; | |
1915 | ||
cbb9e6aa | 1916 | var_locus = gfc_current_locus; |
4ee9c684 | 1917 | |
1918 | /* Now we could see the optional array spec. or character length. */ | |
aff518b0 | 1919 | m = gfc_match_array_spec (&as, true, true); |
eae6c6c1 | 1920 | if (m == MATCH_ERROR) |
4ee9c684 | 1921 | goto cleanup; |
3b6a4b41 | 1922 | |
4ee9c684 | 1923 | if (m == MATCH_NO) |
1924 | as = gfc_copy_array_spec (current_as); | |
9b58b4c7 | 1925 | else if (current_as |
60e19868 | 1926 | && !merge_array_spec (current_as, as, true)) |
9b58b4c7 | 1927 | { |
1928 | m = MATCH_ERROR; | |
1929 | goto cleanup; | |
1930 | } | |
4ee9c684 | 1931 | |
829d7a08 | 1932 | if (flag_cray_pointer) |
eae6c6c1 | 1933 | cp_as = gfc_copy_array_spec (as); |
1934 | ||
ae2864a8 | 1935 | /* At this point, we know for sure if the symbol is PARAMETER and can thus |
1936 | determine (and check) whether it can be implied-shape. If it | |
1937 | was parsed as assumed-size, change it because PARAMETERs can not | |
1938 | be assumed-size. */ | |
1939 | if (as) | |
1940 | { | |
1941 | if (as->type == AS_IMPLIED_SHAPE && current_attr.flavor != FL_PARAMETER) | |
1942 | { | |
1943 | m = MATCH_ERROR; | |
716da296 | 1944 | gfc_error ("Non-PARAMETER symbol %qs at %L can't be implied-shape", |
ae2864a8 | 1945 | name, &var_locus); |
1946 | goto cleanup; | |
1947 | } | |
1948 | ||
1949 | if (as->type == AS_ASSUMED_SIZE && as->rank == 1 | |
1950 | && current_attr.flavor == FL_PARAMETER) | |
1951 | as->type = AS_IMPLIED_SHAPE; | |
1952 | ||
1953 | if (as->type == AS_IMPLIED_SHAPE | |
60e19868 | 1954 | && !gfc_notify_std (GFC_STD_F2008, "Implied-shape array at %L", |
1955 | &var_locus)) | |
ae2864a8 | 1956 | { |
1957 | m = MATCH_ERROR; | |
1958 | goto cleanup; | |
1959 | } | |
1960 | } | |
1961 | ||
4ee9c684 | 1962 | char_len = NULL; |
1963 | cl = NULL; | |
3e715c81 | 1964 | cl_deferred = false; |
4ee9c684 | 1965 | |
1966 | if (current_ts.type == BT_CHARACTER) | |
1967 | { | |
926b8757 | 1968 | switch (match_char_length (&char_len, &cl_deferred, false)) |
4ee9c684 | 1969 | { |
1970 | case MATCH_YES: | |
d270ce52 | 1971 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
4ee9c684 | 1972 | |
1973 | cl->length = char_len; | |
1974 | break; | |
1975 | ||
3923b69f | 1976 | /* Non-constant lengths need to be copied after the first |
04b61f60 | 1977 | element. Also copy assumed lengths. */ |
4ee9c684 | 1978 | case MATCH_NO: |
04b61f60 | 1979 | if (elem > 1 |
eeebe20b | 1980 | && (current_ts.u.cl->length == NULL |
1981 | || current_ts.u.cl->length->expr_type != EXPR_CONSTANT)) | |
3923b69f | 1982 | { |
d270ce52 | 1983 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
eeebe20b | 1984 | cl->length = gfc_copy_expr (current_ts.u.cl->length); |
3923b69f | 1985 | } |
1986 | else | |
eeebe20b | 1987 | cl = current_ts.u.cl; |
3923b69f | 1988 | |
3e715c81 | 1989 | cl_deferred = current_ts.deferred; |
1990 | ||
4ee9c684 | 1991 | break; |
1992 | ||
1993 | case MATCH_ERROR: | |
1994 | goto cleanup; | |
1995 | } | |
1996 | } | |
1997 | ||
4b8eb6ca | 1998 | /* The dummy arguments and result of the abreviated form of MODULE |
1999 | PROCEDUREs, used in SUBMODULES should not be redefined. */ | |
2000 | if (gfc_current_ns->proc_name | |
2001 | && gfc_current_ns->proc_name->abr_modproc_decl) | |
2002 | { | |
2003 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2004 | if (sym != NULL && (sym->attr.dummy || sym->attr.result)) | |
2005 | { | |
2006 | m = MATCH_ERROR; | |
2007 | gfc_error ("'%s' at %C is a redefinition of the declaration " | |
2008 | "in the corresponding interface for MODULE " | |
2009 | "PROCEDURE '%s'", sym->name, | |
2010 | gfc_current_ns->proc_name->name); | |
2011 | goto cleanup; | |
2012 | } | |
2013 | } | |
2014 | ||
b549d2a5 | 2015 | /* If this symbol has already shown up in a Cray Pointer declaration, |
322680b5 | 2016 | and this is not a component declaration, |
f6d0e37a | 2017 | then we want to set the type & bail out. */ |
829d7a08 | 2018 | if (flag_cray_pointer && gfc_current_state () != COMP_DERIVED) |
b549d2a5 | 2019 | { |
2020 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2021 | if (sym != NULL && sym->attr.cray_pointee) | |
2022 | { | |
2023 | sym->ts.type = current_ts.type; | |
2024 | sym->ts.kind = current_ts.kind; | |
eeebe20b | 2025 | sym->ts.u.cl = cl; |
2026 | sym->ts.u.derived = current_ts.u.derived; | |
c5d33754 | 2027 | sym->ts.is_c_interop = current_ts.is_c_interop; |
2028 | sym->ts.is_iso_c = current_ts.is_iso_c; | |
b549d2a5 | 2029 | m = MATCH_YES; |
8db94b3b | 2030 | |
b549d2a5 | 2031 | /* Check to see if we have an array specification. */ |
2032 | if (cp_as != NULL) | |
2033 | { | |
2034 | if (sym->as != NULL) | |
2035 | { | |
7698a624 | 2036 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
b549d2a5 | 2037 | gfc_free_array_spec (cp_as); |
2038 | m = MATCH_ERROR; | |
2039 | goto cleanup; | |
2040 | } | |
2041 | else | |
2042 | { | |
60e19868 | 2043 | if (!gfc_set_array_spec (sym, cp_as, &var_locus)) |
b549d2a5 | 2044 | gfc_internal_error ("Couldn't set pointee array spec."); |
e14bee04 | 2045 | |
b549d2a5 | 2046 | /* Fix the array spec. */ |
e14bee04 | 2047 | m = gfc_mod_pointee_as (sym->as); |
b549d2a5 | 2048 | if (m == MATCH_ERROR) |
2049 | goto cleanup; | |
2050 | } | |
e14bee04 | 2051 | } |
b549d2a5 | 2052 | goto cleanup; |
2053 | } | |
2054 | else | |
2055 | { | |
2056 | gfc_free_array_spec (cp_as); | |
2057 | } | |
2058 | } | |
e14bee04 | 2059 | |
1e057e9b | 2060 | /* Procedure pointer as function result. */ |
2061 | if (gfc_current_state () == COMP_FUNCTION | |
2062 | && strcmp ("ppr@", gfc_current_block ()->name) == 0 | |
2063 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) == 0) | |
2064 | strcpy (name, "ppr@"); | |
2065 | ||
2066 | if (gfc_current_state () == COMP_FUNCTION | |
2067 | && strcmp (name, gfc_current_block ()->name) == 0 | |
2068 | && gfc_current_block ()->result | |
2069 | && strcmp ("ppr@", gfc_current_block ()->result->name) == 0) | |
2070 | strcpy (name, "ppr@"); | |
e14bee04 | 2071 | |
4ee9c684 | 2072 | /* OK, we've successfully matched the declaration. Now put the |
2073 | symbol in the current namespace, because it might be used in the | |
fe06c0d5 | 2074 | optional initialization expression for this symbol, e.g. this is |
4ee9c684 | 2075 | perfectly legal: |
2076 | ||
2077 | integer, parameter :: i = huge(i) | |
2078 | ||
2079 | This is only true for parameters or variables of a basic type. | |
2080 | For components of derived types, it is not true, so we don't | |
2081 | create a symbol for those yet. If we fail to create the symbol, | |
2082 | bail out. */ | |
2083 | if (gfc_current_state () != COMP_DERIVED | |
60e19868 | 2084 | && !build_sym (name, cl, cl_deferred, &as, &var_locus)) |
4ee9c684 | 2085 | { |
b8a51d79 | 2086 | m = MATCH_ERROR; |
2087 | goto cleanup; | |
2088 | } | |
2089 | ||
60e19868 | 2090 | if (!check_function_name (name)) |
4ee9c684 | 2091 | { |
4ee9c684 | 2092 | m = MATCH_ERROR; |
2093 | goto cleanup; | |
2094 | } | |
2095 | ||
b4f45d02 | 2096 | /* We allow old-style initializations of the form |
2097 | integer i /2/, j(4) /3*3, 1/ | |
2098 | (if no colon has been seen). These are different from data | |
2099 | statements in that initializers are only allowed to apply to the | |
2100 | variable immediately preceding, i.e. | |
2101 | integer i, j /1, 2/ | |
2102 | is not allowed. Therefore we have to do some work manually, that | |
cca3db55 | 2103 | could otherwise be left to the matchers for DATA statements. */ |
b4f45d02 | 2104 | |
2105 | if (!colon_seen && gfc_match (" /") == MATCH_YES) | |
2106 | { | |
60e19868 | 2107 | if (!gfc_notify_std (GFC_STD_GNU, "Old-style " |
2108 | "initialization at %C")) | |
b4f45d02 | 2109 | return MATCH_ERROR; |
d57a1422 | 2110 | else if (gfc_current_state () == COMP_DERIVED) |
2111 | { | |
2112 | gfc_error ("Invalid old style initialization for derived type " | |
2113 | "component at %C"); | |
2114 | m = MATCH_ERROR; | |
2115 | goto cleanup; | |
2116 | } | |
8db94b3b | 2117 | |
b4f45d02 | 2118 | return match_old_style_init (name); |
2119 | } | |
2120 | ||
4ee9c684 | 2121 | /* The double colon must be present in order to have initializers. |
2122 | Otherwise the statement is ambiguous with an assignment statement. */ | |
2123 | if (colon_seen) | |
2124 | { | |
2125 | if (gfc_match (" =>") == MATCH_YES) | |
2126 | { | |
4ee9c684 | 2127 | if (!current_attr.pointer) |
2128 | { | |
2129 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
2130 | m = MATCH_ERROR; | |
2131 | goto cleanup; | |
2132 | } | |
2133 | ||
23d075f4 | 2134 | m = match_pointer_init (&initializer, 0); |
4ee9c684 | 2135 | if (m != MATCH_YES) |
2136 | goto cleanup; | |
4ee9c684 | 2137 | } |
2138 | else if (gfc_match_char ('=') == MATCH_YES) | |
2139 | { | |
2140 | if (current_attr.pointer) | |
2141 | { | |
0d2b3c9c | 2142 | gfc_error ("Pointer initialization at %C requires %<=>%>, " |
2143 | "not %<=%>"); | |
4ee9c684 | 2144 | m = MATCH_ERROR; |
2145 | goto cleanup; | |
2146 | } | |
2147 | ||
2148 | m = gfc_match_init_expr (&initializer); | |
2149 | if (m == MATCH_NO) | |
2150 | { | |
2151 | gfc_error ("Expected an initialization expression at %C"); | |
2152 | m = MATCH_ERROR; | |
2153 | } | |
2154 | ||
b3a420c5 | 2155 | if (current_attr.flavor != FL_PARAMETER && gfc_pure (NULL) |
2156 | && gfc_state_stack->state != COMP_DERIVED) | |
4ee9c684 | 2157 | { |
1a9745d2 | 2158 | gfc_error ("Initialization of variable at %C is not allowed in " |
2159 | "a PURE procedure"); | |
4ee9c684 | 2160 | m = MATCH_ERROR; |
2161 | } | |
2162 | ||
c77badf3 | 2163 | if (current_attr.flavor != FL_PARAMETER |
2164 | && gfc_state_stack->state != COMP_DERIVED) | |
2165 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); | |
2166 | ||
4ee9c684 | 2167 | if (m != MATCH_YES) |
2168 | goto cleanup; | |
2169 | } | |
8ffad0f9 | 2170 | } |
2171 | ||
2294b616 | 2172 | if (initializer != NULL && current_attr.allocatable |
2173 | && gfc_current_state () == COMP_DERIVED) | |
2174 | { | |
1a9745d2 | 2175 | gfc_error ("Initialization of allocatable component at %C is not " |
2176 | "allowed"); | |
2294b616 | 2177 | m = MATCH_ERROR; |
2178 | goto cleanup; | |
2179 | } | |
2180 | ||
d9b3f26b | 2181 | /* Add the initializer. Note that it is fine if initializer is |
4ee9c684 | 2182 | NULL here, because we sometimes also need to check if a |
2183 | declaration *must* have an initialization expression. */ | |
2184 | if (gfc_current_state () != COMP_DERIVED) | |
2185 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
2186 | else | |
d9b3f26b | 2187 | { |
2294b616 | 2188 | if (current_ts.type == BT_DERIVED |
1a9745d2 | 2189 | && !current_attr.pointer && !initializer) |
d9b3f26b | 2190 | initializer = gfc_default_initializer (¤t_ts); |
2191 | t = build_struct (name, cl, &initializer, &as); | |
2192 | } | |
4ee9c684 | 2193 | |
60e19868 | 2194 | m = (t) ? MATCH_YES : MATCH_ERROR; |
4ee9c684 | 2195 | |
2196 | cleanup: | |
2197 | /* Free stuff up and return. */ | |
2198 | gfc_free_expr (initializer); | |
2199 | gfc_free_array_spec (as); | |
2200 | ||
2201 | return m; | |
2202 | } | |
2203 | ||
2204 | ||
d10f89ee | 2205 | /* Match an extended-f77 "TYPESPEC*bytesize"-style kind specification. |
2206 | This assumes that the byte size is equal to the kind number for | |
2207 | non-COMPLEX types, and equal to twice the kind number for COMPLEX. */ | |
4ee9c684 | 2208 | |
2209 | match | |
1a9745d2 | 2210 | gfc_match_old_kind_spec (gfc_typespec *ts) |
4ee9c684 | 2211 | { |
2212 | match m; | |
3bd3b616 | 2213 | int original_kind; |
4ee9c684 | 2214 | |
2215 | if (gfc_match_char ('*') != MATCH_YES) | |
2216 | return MATCH_NO; | |
2217 | ||
3bd3b616 | 2218 | m = gfc_match_small_literal_int (&ts->kind, NULL); |
4ee9c684 | 2219 | if (m != MATCH_YES) |
2220 | return MATCH_ERROR; | |
2221 | ||
b118a35b | 2222 | original_kind = ts->kind; |
2223 | ||
4ee9c684 | 2224 | /* Massage the kind numbers for complex types. */ |
b118a35b | 2225 | if (ts->type == BT_COMPLEX) |
2226 | { | |
2227 | if (ts->kind % 2) | |
1a9745d2 | 2228 | { |
2229 | gfc_error ("Old-style type declaration %s*%d not supported at %C", | |
2230 | gfc_basic_typename (ts->type), original_kind); | |
2231 | return MATCH_ERROR; | |
2232 | } | |
b118a35b | 2233 | ts->kind /= 2; |
2d76519f | 2234 | |
2235 | } | |
2236 | ||
eb106faf | 2237 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
2d76519f | 2238 | ts->kind = 8; |
2239 | ||
2240 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2241 | { | |
2242 | if (ts->kind == 4) | |
2243 | { | |
eb106faf | 2244 | if (flag_real4_kind == 8) |
2d76519f | 2245 | ts->kind = 8; |
eb106faf | 2246 | if (flag_real4_kind == 10) |
2d76519f | 2247 | ts->kind = 10; |
eb106faf | 2248 | if (flag_real4_kind == 16) |
2d76519f | 2249 | ts->kind = 16; |
2250 | } | |
2251 | ||
2252 | if (ts->kind == 8) | |
2253 | { | |
eb106faf | 2254 | if (flag_real8_kind == 4) |
2d76519f | 2255 | ts->kind = 4; |
eb106faf | 2256 | if (flag_real8_kind == 10) |
2d76519f | 2257 | ts->kind = 10; |
eb106faf | 2258 | if (flag_real8_kind == 16) |
2d76519f | 2259 | ts->kind = 16; |
2260 | } | |
b118a35b | 2261 | } |
4ee9c684 | 2262 | |
f2d4ef3b | 2263 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
4ee9c684 | 2264 | { |
b118a35b | 2265 | gfc_error ("Old-style type declaration %s*%d not supported at %C", |
1a9745d2 | 2266 | gfc_basic_typename (ts->type), original_kind); |
4ee9c684 | 2267 | return MATCH_ERROR; |
2268 | } | |
2269 | ||
60e19868 | 2270 | if (!gfc_notify_std (GFC_STD_GNU, |
2271 | "Nonstandard type declaration %s*%d at %C", | |
2272 | gfc_basic_typename(ts->type), original_kind)) | |
be7f01a1 | 2273 | return MATCH_ERROR; |
2274 | ||
4ee9c684 | 2275 | return MATCH_YES; |
2276 | } | |
2277 | ||
2278 | ||
2279 | /* Match a kind specification. Since kinds are generally optional, we | |
2280 | usually return MATCH_NO if something goes wrong. If a "kind=" | |
2281 | string is found, then we know we have an error. */ | |
2282 | ||
2283 | match | |
67a51c8e | 2284 | gfc_match_kind_spec (gfc_typespec *ts, bool kind_expr_only) |
4ee9c684 | 2285 | { |
67a51c8e | 2286 | locus where, loc; |
4ee9c684 | 2287 | gfc_expr *e; |
2288 | match m, n; | |
c632ff3d | 2289 | char c; |
4ee9c684 | 2290 | const char *msg; |
2291 | ||
2292 | m = MATCH_NO; | |
67a51c8e | 2293 | n = MATCH_YES; |
4ee9c684 | 2294 | e = NULL; |
2295 | ||
67a51c8e | 2296 | where = loc = gfc_current_locus; |
2297 | ||
2298 | if (kind_expr_only) | |
2299 | goto kind_expr; | |
4ee9c684 | 2300 | |
2301 | if (gfc_match_char ('(') == MATCH_NO) | |
2302 | return MATCH_NO; | |
2303 | ||
2304 | /* Also gobbles optional text. */ | |
2305 | if (gfc_match (" kind = ") == MATCH_YES) | |
2306 | m = MATCH_ERROR; | |
2307 | ||
67a51c8e | 2308 | loc = gfc_current_locus; |
2309 | ||
2310 | kind_expr: | |
4ee9c684 | 2311 | n = gfc_match_init_expr (&e); |
67a51c8e | 2312 | |
4ee9c684 | 2313 | if (n != MATCH_YES) |
67a51c8e | 2314 | { |
077932f9 | 2315 | if (gfc_matching_function) |
67a51c8e | 2316 | { |
8db94b3b | 2317 | /* The function kind expression might include use associated or |
077932f9 | 2318 | imported parameters and try again after the specification |
2319 | expressions..... */ | |
67a51c8e | 2320 | if (gfc_match_char (')') != MATCH_YES) |
2321 | { | |
2322 | gfc_error ("Missing right parenthesis at %C"); | |
2323 | m = MATCH_ERROR; | |
2324 | goto no_match; | |
2325 | } | |
2326 | ||
2327 | gfc_free_expr (e); | |
67a51c8e | 2328 | gfc_undo_symbols (); |
2329 | return MATCH_YES; | |
2330 | } | |
2331 | else | |
2332 | { | |
2333 | /* ....or else, the match is real. */ | |
2334 | if (n == MATCH_NO) | |
2335 | gfc_error ("Expected initialization expression at %C"); | |
2336 | if (n != MATCH_YES) | |
2337 | return MATCH_ERROR; | |
2338 | } | |
2339 | } | |
4ee9c684 | 2340 | |
2341 | if (e->rank != 0) | |
2342 | { | |
2343 | gfc_error ("Expected scalar initialization expression at %C"); | |
2344 | m = MATCH_ERROR; | |
2345 | goto no_match; | |
2346 | } | |
2347 | ||
2348 | msg = gfc_extract_int (e, &ts->kind); | |
077932f9 | 2349 | |
4ee9c684 | 2350 | if (msg != NULL) |
2351 | { | |
2352 | gfc_error (msg); | |
2353 | m = MATCH_ERROR; | |
2354 | goto no_match; | |
2355 | } | |
2356 | ||
c5d33754 | 2357 | /* Before throwing away the expression, let's see if we had a |
2358 | C interoperable kind (and store the fact). */ | |
2359 | if (e->ts.is_c_interop == 1) | |
2360 | { | |
df084314 | 2361 | /* Mark this as C interoperable if being declared with one |
c5d33754 | 2362 | of the named constants from iso_c_binding. */ |
2363 | ts->is_c_interop = e->ts.is_iso_c; | |
2364 | ts->f90_type = e->ts.f90_type; | |
2365 | } | |
8db94b3b | 2366 | |
4ee9c684 | 2367 | gfc_free_expr (e); |
2368 | e = NULL; | |
2369 | ||
c5d33754 | 2370 | /* Ignore errors to this point, if we've gotten here. This means |
2371 | we ignore the m=MATCH_ERROR from above. */ | |
f2d4ef3b | 2372 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
4ee9c684 | 2373 | { |
2374 | gfc_error ("Kind %d not supported for type %s at %C", ts->kind, | |
2375 | gfc_basic_typename (ts->type)); | |
c632ff3d | 2376 | gfc_current_locus = where; |
2377 | return MATCH_ERROR; | |
4ee9c684 | 2378 | } |
c632ff3d | 2379 | |
209d3778 | 2380 | /* Warn if, e.g., c_int is used for a REAL variable, but not |
2381 | if, e.g., c_double is used for COMPLEX as the standard | |
2382 | explicitly says that the kind type parameter for complex and real | |
2383 | variable is the same, i.e. c_float == c_float_complex. */ | |
2384 | if (ts->f90_type != BT_UNKNOWN && ts->f90_type != ts->type | |
2385 | && !((ts->f90_type == BT_REAL && ts->type == BT_COMPLEX) | |
2386 | || (ts->f90_type == BT_COMPLEX && ts->type == BT_REAL))) | |
6f521718 | 2387 | gfc_warning_now (0, "C kind type parameter is for type %s but type at %L " |
ded233a6 | 2388 | "is %s", gfc_basic_typename (ts->f90_type), &where, |
2389 | gfc_basic_typename (ts->type)); | |
209d3778 | 2390 | |
c632ff3d | 2391 | gfc_gobble_whitespace (); |
e0be6f02 | 2392 | if ((c = gfc_next_ascii_char ()) != ')' |
2393 | && (ts->type != BT_CHARACTER || c != ',')) | |
4ee9c684 | 2394 | { |
c632ff3d | 2395 | if (ts->type == BT_CHARACTER) |
2396 | gfc_error ("Missing right parenthesis or comma at %C"); | |
2397 | else | |
2398 | gfc_error ("Missing right parenthesis at %C"); | |
67a51c8e | 2399 | m = MATCH_ERROR; |
4ee9c684 | 2400 | } |
c5d33754 | 2401 | else |
2402 | /* All tests passed. */ | |
2403 | m = MATCH_YES; | |
4ee9c684 | 2404 | |
c5d33754 | 2405 | if(m == MATCH_ERROR) |
2406 | gfc_current_locus = where; | |
2d76519f | 2407 | |
eb106faf | 2408 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
2d76519f | 2409 | ts->kind = 8; |
2410 | ||
2411 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2412 | { | |
2413 | if (ts->kind == 4) | |
2414 | { | |
eb106faf | 2415 | if (flag_real4_kind == 8) |
2d76519f | 2416 | ts->kind = 8; |
eb106faf | 2417 | if (flag_real4_kind == 10) |
2d76519f | 2418 | ts->kind = 10; |
eb106faf | 2419 | if (flag_real4_kind == 16) |
2d76519f | 2420 | ts->kind = 16; |
2421 | } | |
2422 | ||
2423 | if (ts->kind == 8) | |
2424 | { | |
eb106faf | 2425 | if (flag_real8_kind == 4) |
2d76519f | 2426 | ts->kind = 4; |
eb106faf | 2427 | if (flag_real8_kind == 10) |
2d76519f | 2428 | ts->kind = 10; |
eb106faf | 2429 | if (flag_real8_kind == 16) |
2d76519f | 2430 | ts->kind = 16; |
2431 | } | |
2432 | } | |
2433 | ||
c5d33754 | 2434 | /* Return what we know from the test(s). */ |
2435 | return m; | |
4ee9c684 | 2436 | |
2437 | no_match: | |
2438 | gfc_free_expr (e); | |
cbb9e6aa | 2439 | gfc_current_locus = where; |
4ee9c684 | 2440 | return m; |
2441 | } | |
2442 | ||
2443 | ||
33399208 | 2444 | static match |
2445 | match_char_kind (int * kind, int * is_iso_c) | |
2446 | { | |
2447 | locus where; | |
2448 | gfc_expr *e; | |
2449 | match m, n; | |
2450 | const char *msg; | |
2451 | ||
2452 | m = MATCH_NO; | |
2453 | e = NULL; | |
2454 | where = gfc_current_locus; | |
2455 | ||
2456 | n = gfc_match_init_expr (&e); | |
c632ff3d | 2457 | |
077932f9 | 2458 | if (n != MATCH_YES && gfc_matching_function) |
c632ff3d | 2459 | { |
077932f9 | 2460 | /* The expression might include use-associated or imported |
8db94b3b | 2461 | parameters and try again after the specification |
077932f9 | 2462 | expressions. */ |
c632ff3d | 2463 | gfc_free_expr (e); |
c632ff3d | 2464 | gfc_undo_symbols (); |
2465 | return MATCH_YES; | |
2466 | } | |
2467 | ||
33399208 | 2468 | if (n == MATCH_NO) |
2469 | gfc_error ("Expected initialization expression at %C"); | |
2470 | if (n != MATCH_YES) | |
2471 | return MATCH_ERROR; | |
2472 | ||
2473 | if (e->rank != 0) | |
2474 | { | |
2475 | gfc_error ("Expected scalar initialization expression at %C"); | |
2476 | m = MATCH_ERROR; | |
2477 | goto no_match; | |
2478 | } | |
2479 | ||
2480 | msg = gfc_extract_int (e, kind); | |
2481 | *is_iso_c = e->ts.is_iso_c; | |
2482 | if (msg != NULL) | |
2483 | { | |
2484 | gfc_error (msg); | |
2485 | m = MATCH_ERROR; | |
2486 | goto no_match; | |
2487 | } | |
2488 | ||
2489 | gfc_free_expr (e); | |
2490 | ||
2491 | /* Ignore errors to this point, if we've gotten here. This means | |
2492 | we ignore the m=MATCH_ERROR from above. */ | |
2493 | if (gfc_validate_kind (BT_CHARACTER, *kind, true) < 0) | |
2494 | { | |
2495 | gfc_error ("Kind %d is not supported for CHARACTER at %C", *kind); | |
2496 | m = MATCH_ERROR; | |
2497 | } | |
2498 | else | |
2499 | /* All tests passed. */ | |
2500 | m = MATCH_YES; | |
2501 | ||
2502 | if (m == MATCH_ERROR) | |
2503 | gfc_current_locus = where; | |
8db94b3b | 2504 | |
33399208 | 2505 | /* Return what we know from the test(s). */ |
2506 | return m; | |
2507 | ||
2508 | no_match: | |
2509 | gfc_free_expr (e); | |
2510 | gfc_current_locus = where; | |
2511 | return m; | |
2512 | } | |
2513 | ||
10f5dcc0 | 2514 | |
4ee9c684 | 2515 | /* Match the various kind/length specifications in a CHARACTER |
2516 | declaration. We don't return MATCH_NO. */ | |
2517 | ||
10f5dcc0 | 2518 | match |
2519 | gfc_match_char_spec (gfc_typespec *ts) | |
4ee9c684 | 2520 | { |
33399208 | 2521 | int kind, seen_length, is_iso_c; |
4ee9c684 | 2522 | gfc_charlen *cl; |
2523 | gfc_expr *len; | |
2524 | match m; | |
3e715c81 | 2525 | bool deferred; |
33399208 | 2526 | |
4ee9c684 | 2527 | len = NULL; |
2528 | seen_length = 0; | |
33399208 | 2529 | kind = 0; |
2530 | is_iso_c = 0; | |
3e715c81 | 2531 | deferred = false; |
4ee9c684 | 2532 | |
2533 | /* Try the old-style specification first. */ | |
2534 | old_char_selector = 0; | |
2535 | ||
926b8757 | 2536 | m = match_char_length (&len, &deferred, true); |
4ee9c684 | 2537 | if (m != MATCH_NO) |
2538 | { | |
2539 | if (m == MATCH_YES) | |
2540 | old_char_selector = 1; | |
2541 | seen_length = 1; | |
2542 | goto done; | |
2543 | } | |
2544 | ||
2545 | m = gfc_match_char ('('); | |
2546 | if (m != MATCH_YES) | |
2547 | { | |
c5d33754 | 2548 | m = MATCH_YES; /* Character without length is a single char. */ |
4ee9c684 | 2549 | goto done; |
2550 | } | |
2551 | ||
c5d33754 | 2552 | /* Try the weird case: ( KIND = <int> [ , LEN = <len-param> ] ). */ |
4ee9c684 | 2553 | if (gfc_match (" kind =") == MATCH_YES) |
2554 | { | |
33399208 | 2555 | m = match_char_kind (&kind, &is_iso_c); |
8db94b3b | 2556 | |
4ee9c684 | 2557 | if (m == MATCH_ERROR) |
2558 | goto done; | |
2559 | if (m == MATCH_NO) | |
2560 | goto syntax; | |
2561 | ||
2562 | if (gfc_match (" , len =") == MATCH_NO) | |
2563 | goto rparen; | |
2564 | ||
3e715c81 | 2565 | m = char_len_param_value (&len, &deferred); |
4ee9c684 | 2566 | if (m == MATCH_NO) |
2567 | goto syntax; | |
2568 | if (m == MATCH_ERROR) | |
2569 | goto done; | |
2570 | seen_length = 1; | |
2571 | ||
2572 | goto rparen; | |
2573 | } | |
2574 | ||
f6d0e37a | 2575 | /* Try to match "LEN = <len-param>" or "LEN = <len-param>, KIND = <int>". */ |
4ee9c684 | 2576 | if (gfc_match (" len =") == MATCH_YES) |
2577 | { | |
3e715c81 | 2578 | m = char_len_param_value (&len, &deferred); |
4ee9c684 | 2579 | if (m == MATCH_NO) |
2580 | goto syntax; | |
2581 | if (m == MATCH_ERROR) | |
2582 | goto done; | |
2583 | seen_length = 1; | |
2584 | ||
2585 | if (gfc_match_char (')') == MATCH_YES) | |
2586 | goto done; | |
2587 | ||
2588 | if (gfc_match (" , kind =") != MATCH_YES) | |
2589 | goto syntax; | |
2590 | ||
33399208 | 2591 | if (match_char_kind (&kind, &is_iso_c) == MATCH_ERROR) |
2592 | goto done; | |
4ee9c684 | 2593 | |
2594 | goto rparen; | |
2595 | } | |
2596 | ||
f6d0e37a | 2597 | /* Try to match ( <len-param> ) or ( <len-param> , [ KIND = ] <int> ). */ |
3e715c81 | 2598 | m = char_len_param_value (&len, &deferred); |
4ee9c684 | 2599 | if (m == MATCH_NO) |
2600 | goto syntax; | |
2601 | if (m == MATCH_ERROR) | |
2602 | goto done; | |
2603 | seen_length = 1; | |
2604 | ||
2605 | m = gfc_match_char (')'); | |
2606 | if (m == MATCH_YES) | |
2607 | goto done; | |
2608 | ||
2609 | if (gfc_match_char (',') != MATCH_YES) | |
2610 | goto syntax; | |
2611 | ||
c5d33754 | 2612 | gfc_match (" kind ="); /* Gobble optional text. */ |
4ee9c684 | 2613 | |
33399208 | 2614 | m = match_char_kind (&kind, &is_iso_c); |
4ee9c684 | 2615 | if (m == MATCH_ERROR) |
2616 | goto done; | |
2617 | if (m == MATCH_NO) | |
2618 | goto syntax; | |
2619 | ||
2620 | rparen: | |
2621 | /* Require a right-paren at this point. */ | |
2622 | m = gfc_match_char (')'); | |
2623 | if (m == MATCH_YES) | |
2624 | goto done; | |
2625 | ||
2626 | syntax: | |
2627 | gfc_error ("Syntax error in CHARACTER declaration at %C"); | |
2628 | m = MATCH_ERROR; | |
a3cbe8cc | 2629 | gfc_free_expr (len); |
2630 | return m; | |
4ee9c684 | 2631 | |
2632 | done: | |
8d39570e | 2633 | /* Deal with character functions after USE and IMPORT statements. */ |
2634 | if (gfc_matching_function) | |
077932f9 | 2635 | { |
8d39570e | 2636 | gfc_free_expr (len); |
077932f9 | 2637 | gfc_undo_symbols (); |
2638 | return MATCH_YES; | |
2639 | } | |
2640 | ||
4ee9c684 | 2641 | if (m != MATCH_YES) |
2642 | { | |
2643 | gfc_free_expr (len); | |
2644 | return m; | |
2645 | } | |
2646 | ||
2647 | /* Do some final massaging of the length values. */ | |
d270ce52 | 2648 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
4ee9c684 | 2649 | |
2650 | if (seen_length == 0) | |
126387b5 | 2651 | cl->length = gfc_get_int_expr (gfc_default_integer_kind, NULL, 1); |
4ee9c684 | 2652 | else |
2fe2caa6 | 2653 | cl->length = len; |
4ee9c684 | 2654 | |
eeebe20b | 2655 | ts->u.cl = cl; |
33399208 | 2656 | ts->kind = kind == 0 ? gfc_default_character_kind : kind; |
3e715c81 | 2657 | ts->deferred = deferred; |
4ee9c684 | 2658 | |
df084314 | 2659 | /* We have to know if it was a C interoperable kind so we can |
c5d33754 | 2660 | do accurate type checking of bind(c) procs, etc. */ |
33399208 | 2661 | if (kind != 0) |
df084314 | 2662 | /* Mark this as C interoperable if being declared with one |
33399208 | 2663 | of the named constants from iso_c_binding. */ |
2664 | ts->is_c_interop = is_iso_c; | |
c5d33754 | 2665 | else if (len != NULL) |
33399208 | 2666 | /* Here, we might have parsed something such as: character(c_char) |
2667 | In this case, the parsing code above grabs the c_char when | |
2668 | looking for the length (line 1690, roughly). it's the last | |
2669 | testcase for parsing the kind params of a character variable. | |
2670 | However, it's not actually the length. this seems like it | |
8db94b3b | 2671 | could be an error. |
33399208 | 2672 | To see if the user used a C interop kind, test the expr |
2673 | of the so called length, and see if it's C interoperable. */ | |
2674 | ts->is_c_interop = len->ts.is_iso_c; | |
8db94b3b | 2675 | |
4ee9c684 | 2676 | return MATCH_YES; |
2677 | } | |
2678 | ||
2679 | ||
e8152f13 | 2680 | /* Matches a declaration-type-spec (F03:R502). If successful, sets the ts |
2681 | structure to the matched specification. This is necessary for FUNCTION and | |
4ee9c684 | 2682 | IMPLICIT statements. |
2683 | ||
e14bee04 | 2684 | If implicit_flag is nonzero, then we don't check for the optional |
39351103 | 2685 | kind specification. Not doing so is needed for matching an IMPLICIT |
4ee9c684 | 2686 | statement correctly. */ |
2687 | ||
67a51c8e | 2688 | match |
e8152f13 | 2689 | gfc_match_decl_type_spec (gfc_typespec *ts, int implicit_flag) |
4ee9c684 | 2690 | { |
2691 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c2958b6b | 2692 | gfc_symbol *sym, *dt_sym; |
4ee9c684 | 2693 | match m; |
e0be6f02 | 2694 | char c; |
f446fb22 | 2695 | bool seen_deferred_kind, matched_type; |
c2958b6b | 2696 | const char *dt_name; |
4ee9c684 | 2697 | |
077932f9 | 2698 | /* A belt and braces check that the typespec is correctly being treated |
2699 | as a deferred characteristic association. */ | |
2700 | seen_deferred_kind = (gfc_current_state () == COMP_FUNCTION) | |
8d39570e | 2701 | && (gfc_current_block ()->result->ts.kind == -1) |
2702 | && (ts->kind == -1); | |
4ee9c684 | 2703 | gfc_clear_ts (ts); |
077932f9 | 2704 | if (seen_deferred_kind) |
2705 | ts->kind = -1; | |
4ee9c684 | 2706 | |
c5d33754 | 2707 | /* Clear the current binding label, in case one is given. */ |
7b2060ba | 2708 | curr_binding_label = NULL; |
c5d33754 | 2709 | |
25b29122 | 2710 | if (gfc_match (" byte") == MATCH_YES) |
2711 | { | |
60e19868 | 2712 | if (!gfc_notify_std (GFC_STD_GNU, "BYTE type at %C")) |
25b29122 | 2713 | return MATCH_ERROR; |
2714 | ||
2715 | if (gfc_validate_kind (BT_INTEGER, 1, true) < 0) | |
2716 | { | |
2717 | gfc_error ("BYTE type used at %C " | |
2718 | "is not available on the target machine"); | |
2719 | return MATCH_ERROR; | |
2720 | } | |
e14bee04 | 2721 | |
25b29122 | 2722 | ts->type = BT_INTEGER; |
2723 | ts->kind = 1; | |
2724 | return MATCH_YES; | |
2725 | } | |
2726 | ||
f446fb22 | 2727 | |
8c2d8d6d | 2728 | m = gfc_match (" type ("); |
f446fb22 | 2729 | matched_type = (m == MATCH_YES); |
8c2d8d6d | 2730 | if (matched_type) |
2731 | { | |
2732 | gfc_gobble_whitespace (); | |
2733 | if (gfc_peek_ascii_char () == '*') | |
2734 | { | |
2735 | if ((m = gfc_match ("*)")) != MATCH_YES) | |
2736 | return m; | |
2737 | if (gfc_current_state () == COMP_DERIVED) | |
2738 | { | |
2739 | gfc_error ("Assumed type at %C is not allowed for components"); | |
2740 | return MATCH_ERROR; | |
2741 | } | |
60e19868 | 2742 | if (!gfc_notify_std (GFC_STD_F2008_TS, "Assumed type " |
2743 | "at %C")) | |
8c2d8d6d | 2744 | return MATCH_ERROR; |
2745 | ts->type = BT_ASSUMED; | |
2746 | return MATCH_YES; | |
2747 | } | |
2748 | ||
2749 | m = gfc_match ("%n", name); | |
2750 | matched_type = (m == MATCH_YES); | |
2751 | } | |
2752 | ||
f446fb22 | 2753 | if ((matched_type && strcmp ("integer", name) == 0) |
2754 | || (!matched_type && gfc_match (" integer") == MATCH_YES)) | |
4ee9c684 | 2755 | { |
2756 | ts->type = BT_INTEGER; | |
b8a891cb | 2757 | ts->kind = gfc_default_integer_kind; |
4ee9c684 | 2758 | goto get_kind; |
2759 | } | |
2760 | ||
f446fb22 | 2761 | if ((matched_type && strcmp ("character", name) == 0) |
2762 | || (!matched_type && gfc_match (" character") == MATCH_YES)) | |
4ee9c684 | 2763 | { |
f446fb22 | 2764 | if (matched_type |
60e19868 | 2765 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
2766 | "intrinsic-type-spec at %C")) | |
f446fb22 | 2767 | return MATCH_ERROR; |
2768 | ||
4ee9c684 | 2769 | ts->type = BT_CHARACTER; |
39351103 | 2770 | if (implicit_flag == 0) |
f446fb22 | 2771 | m = gfc_match_char_spec (ts); |
39351103 | 2772 | else |
f446fb22 | 2773 | m = MATCH_YES; |
2774 | ||
2775 | if (matched_type && m == MATCH_YES && gfc_match_char (')') != MATCH_YES) | |
2776 | m = MATCH_ERROR; | |
2777 | ||
2778 | return m; | |
4ee9c684 | 2779 | } |
2780 | ||
f446fb22 | 2781 | if ((matched_type && strcmp ("real", name) == 0) |
2782 | || (!matched_type && gfc_match (" real") == MATCH_YES)) | |
4ee9c684 | 2783 | { |
2784 | ts->type = BT_REAL; | |
b8a891cb | 2785 | ts->kind = gfc_default_real_kind; |
4ee9c684 | 2786 | goto get_kind; |
2787 | } | |
2788 | ||
f446fb22 | 2789 | if ((matched_type |
2790 | && (strcmp ("doubleprecision", name) == 0 | |
2791 | || (strcmp ("double", name) == 0 | |
2792 | && gfc_match (" precision") == MATCH_YES))) | |
2793 | || (!matched_type && gfc_match (" double precision") == MATCH_YES)) | |
4ee9c684 | 2794 | { |
f446fb22 | 2795 | if (matched_type |
60e19868 | 2796 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
2797 | "intrinsic-type-spec at %C")) | |
f446fb22 | 2798 | return MATCH_ERROR; |
2799 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
2800 | return MATCH_ERROR; | |
2801 | ||
4ee9c684 | 2802 | ts->type = BT_REAL; |
b8a891cb | 2803 | ts->kind = gfc_default_double_kind; |
4ee9c684 | 2804 | return MATCH_YES; |
2805 | } | |
2806 | ||
f446fb22 | 2807 | if ((matched_type && strcmp ("complex", name) == 0) |
2808 | || (!matched_type && gfc_match (" complex") == MATCH_YES)) | |
4ee9c684 | 2809 | { |
2810 | ts->type = BT_COMPLEX; | |
b8a891cb | 2811 | ts->kind = gfc_default_complex_kind; |
4ee9c684 | 2812 | goto get_kind; |
2813 | } | |
2814 | ||
f446fb22 | 2815 | if ((matched_type |
2816 | && (strcmp ("doublecomplex", name) == 0 | |
2817 | || (strcmp ("double", name) == 0 | |
2818 | && gfc_match (" complex") == MATCH_YES))) | |
2819 | || (!matched_type && gfc_match (" double complex") == MATCH_YES)) | |
4ee9c684 | 2820 | { |
60e19868 | 2821 | if (!gfc_notify_std (GFC_STD_GNU, "DOUBLE COMPLEX at %C")) |
f446fb22 | 2822 | return MATCH_ERROR; |
2823 | ||
2824 | if (matched_type | |
60e19868 | 2825 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
2826 | "intrinsic-type-spec at %C")) | |
f446fb22 | 2827 | return MATCH_ERROR; |
2828 | ||
2829 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
be7f01a1 | 2830 | return MATCH_ERROR; |
2831 | ||
4ee9c684 | 2832 | ts->type = BT_COMPLEX; |
b8a891cb | 2833 | ts->kind = gfc_default_double_kind; |
4ee9c684 | 2834 | return MATCH_YES; |
2835 | } | |
2836 | ||
f446fb22 | 2837 | if ((matched_type && strcmp ("logical", name) == 0) |
2838 | || (!matched_type && gfc_match (" logical") == MATCH_YES)) | |
4ee9c684 | 2839 | { |
2840 | ts->type = BT_LOGICAL; | |
b8a891cb | 2841 | ts->kind = gfc_default_logical_kind; |
4ee9c684 | 2842 | goto get_kind; |
2843 | } | |
2844 | ||
f446fb22 | 2845 | if (matched_type) |
2846 | m = gfc_match_char (')'); | |
2847 | ||
1de1b1a9 | 2848 | if (m == MATCH_YES) |
2849 | ts->type = BT_DERIVED; | |
2850 | else | |
8ca7f89c | 2851 | { |
fa102e56 | 2852 | /* Match CLASS declarations. */ |
2853 | m = gfc_match (" class ( * )"); | |
2854 | if (m == MATCH_ERROR) | |
2855 | return MATCH_ERROR; | |
2856 | else if (m == MATCH_YES) | |
2857 | { | |
a90fe829 | 2858 | gfc_symbol *upe; |
2859 | gfc_symtree *st; | |
2860 | ts->type = BT_CLASS; | |
8db94b3b | 2861 | gfc_find_symbol ("STAR", gfc_current_ns, 1, &upe); |
a90fe829 | 2862 | if (upe == NULL) |
2863 | { | |
8db94b3b | 2864 | upe = gfc_new_symbol ("STAR", gfc_current_ns); |
2865 | st = gfc_new_symtree (&gfc_current_ns->sym_root, "STAR"); | |
a90fe829 | 2866 | st->n.sym = upe; |
2867 | gfc_set_sym_referenced (upe); | |
2868 | upe->refs++; | |
2869 | upe->ts.type = BT_VOID; | |
2870 | upe->attr.unlimited_polymorphic = 1; | |
2871 | /* This is essential to force the construction of | |
2872 | unlimited polymorphic component class containers. */ | |
2873 | upe->attr.zero_comp = 1; | |
60e19868 | 2874 | if (!gfc_add_flavor (&upe->attr, FL_DERIVED, NULL, |
2875 | &gfc_current_locus)) | |
fa102e56 | 2876 | return MATCH_ERROR; |
2877 | } | |
a90fe829 | 2878 | else |
2879 | { | |
8db94b3b | 2880 | st = gfc_find_symtree (gfc_current_ns->sym_root, "STAR"); |
a90fe829 | 2881 | if (st == NULL) |
8db94b3b | 2882 | st = gfc_new_symtree (&gfc_current_ns->sym_root, "STAR"); |
a90fe829 | 2883 | st->n.sym = upe; |
2884 | upe->refs++; | |
2885 | } | |
2886 | ts->u.derived = upe; | |
2887 | return m; | |
2888 | } | |
fa102e56 | 2889 | |
8ca7f89c | 2890 | m = gfc_match (" class ( %n )", name); |
2891 | if (m != MATCH_YES) | |
2892 | return m; | |
1de1b1a9 | 2893 | ts->type = BT_CLASS; |
8ca7f89c | 2894 | |
60e19868 | 2895 | if (!gfc_notify_std (GFC_STD_F2003, "CLASS statement at %C")) |
e8152f13 | 2896 | return MATCH_ERROR; |
8ca7f89c | 2897 | } |
4ee9c684 | 2898 | |
077932f9 | 2899 | /* Defer association of the derived type until the end of the |
2900 | specification block. However, if the derived type can be | |
8db94b3b | 2901 | found, add it to the typespec. */ |
077932f9 | 2902 | if (gfc_matching_function) |
67a51c8e | 2903 | { |
eeebe20b | 2904 | ts->u.derived = NULL; |
077932f9 | 2905 | if (gfc_current_state () != COMP_INTERFACE |
2906 | && !gfc_find_symbol (name, NULL, 1, &sym) && sym) | |
c2958b6b | 2907 | { |
2908 | sym = gfc_find_dt_in_generic (sym); | |
2909 | ts->u.derived = sym; | |
2910 | } | |
67a51c8e | 2911 | return MATCH_YES; |
2912 | } | |
2913 | ||
2914 | /* Search for the name but allow the components to be defined later. If | |
2915 | type = -1, this typespec has been seen in a function declaration but | |
c2958b6b | 2916 | the type could not be accessed at that point. The actual derived type is |
df084314 | 2917 | stored in a symtree with the first letter of the name capitalized; the |
c2958b6b | 2918 | symtree with the all lower-case name contains the associated |
2919 | generic function. */ | |
2920 | dt_name = gfc_get_string ("%c%s", | |
2921 | (char) TOUPPER ((unsigned char) name[0]), | |
2922 | (const char*)&name[1]); | |
077932f9 | 2923 | sym = NULL; |
c2958b6b | 2924 | dt_sym = NULL; |
2925 | if (ts->kind != -1) | |
4ee9c684 | 2926 | { |
c2958b6b | 2927 | gfc_get_ha_symbol (name, &sym); |
2928 | if (sym->generic && gfc_find_symbol (dt_name, NULL, 0, &dt_sym)) | |
2929 | { | |
716da296 | 2930 | gfc_error ("Type name %qs at %C is ambiguous", name); |
c2958b6b | 2931 | return MATCH_ERROR; |
2932 | } | |
2933 | if (sym->generic && !dt_sym) | |
2934 | dt_sym = gfc_find_dt_in_generic (sym); | |
4ee9c684 | 2935 | } |
67a51c8e | 2936 | else if (ts->kind == -1) |
2937 | { | |
077932f9 | 2938 | int iface = gfc_state_stack->previous->state != COMP_INTERFACE |
2939 | || gfc_current_ns->has_import_set; | |
c2958b6b | 2940 | gfc_find_symbol (name, NULL, iface, &sym); |
2941 | if (sym && sym->generic && gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
8db94b3b | 2942 | { |
716da296 | 2943 | gfc_error ("Type name %qs at %C is ambiguous", name); |
67a51c8e | 2944 | return MATCH_ERROR; |
2945 | } | |
c2958b6b | 2946 | if (sym && sym->generic && !dt_sym) |
2947 | dt_sym = gfc_find_dt_in_generic (sym); | |
67a51c8e | 2948 | |
077932f9 | 2949 | ts->kind = 0; |
67a51c8e | 2950 | if (sym == NULL) |
2951 | return MATCH_NO; | |
2952 | } | |
4ee9c684 | 2953 | |
c2958b6b | 2954 | if ((sym->attr.flavor != FL_UNKNOWN |
2955 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.generic)) | |
2956 | || sym->attr.subroutine) | |
2957 | { | |
e87256b0 | 2958 | gfc_error ("Type name %qs at %C conflicts with previously declared " |
2959 | "entity at %L, which has the same name", name, | |
2960 | &sym->declared_at); | |
c2958b6b | 2961 | return MATCH_ERROR; |
2962 | } | |
4ee9c684 | 2963 | |
72bec0a3 | 2964 | gfc_save_symbol_data (sym); |
077932f9 | 2965 | gfc_set_sym_referenced (sym); |
c2958b6b | 2966 | if (!sym->attr.generic |
60e19868 | 2967 | && !gfc_add_generic (&sym->attr, sym->name, NULL)) |
c2958b6b | 2968 | return MATCH_ERROR; |
2969 | ||
2970 | if (!sym->attr.function | |
60e19868 | 2971 | && !gfc_add_function (&sym->attr, sym->name, NULL)) |
c2958b6b | 2972 | return MATCH_ERROR; |
2973 | ||
2974 | if (!dt_sym) | |
2975 | { | |
2976 | gfc_interface *intr, *head; | |
2977 | ||
2978 | /* Use upper case to save the actual derived-type symbol. */ | |
2979 | gfc_get_symbol (dt_name, NULL, &dt_sym); | |
2980 | dt_sym->name = gfc_get_string (sym->name); | |
2981 | head = sym->generic; | |
2982 | intr = gfc_get_interface (); | |
2983 | intr->sym = dt_sym; | |
2984 | intr->where = gfc_current_locus; | |
2985 | intr->next = head; | |
2986 | sym->generic = intr; | |
2987 | sym->attr.if_source = IFSRC_DECL; | |
2988 | } | |
72bec0a3 | 2989 | else |
2990 | gfc_save_symbol_data (dt_sym); | |
c2958b6b | 2991 | |
2992 | gfc_set_sym_referenced (dt_sym); | |
2993 | ||
2994 | if (dt_sym->attr.flavor != FL_DERIVED | |
60e19868 | 2995 | && !gfc_add_flavor (&dt_sym->attr, FL_DERIVED, sym->name, NULL)) |
c2958b6b | 2996 | return MATCH_ERROR; |
2997 | ||
2998 | ts->u.derived = dt_sym; | |
4ee9c684 | 2999 | |
3000 | return MATCH_YES; | |
3001 | ||
3002 | get_kind: | |
f446fb22 | 3003 | if (matched_type |
60e19868 | 3004 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3005 | "intrinsic-type-spec at %C")) | |
f446fb22 | 3006 | return MATCH_ERROR; |
3007 | ||
4ee9c684 | 3008 | /* For all types except double, derived and character, look for an |
3009 | optional kind specifier. MATCH_NO is actually OK at this point. */ | |
39351103 | 3010 | if (implicit_flag == 1) |
f446fb22 | 3011 | { |
3012 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
3013 | return MATCH_ERROR; | |
3014 | ||
3015 | return MATCH_YES; | |
3016 | } | |
4ee9c684 | 3017 | |
18f3698a | 3018 | if (gfc_current_form == FORM_FREE) |
3019 | { | |
2c89e2a0 | 3020 | c = gfc_peek_ascii_char (); |
3021 | if (!gfc_is_whitespace (c) && c != '*' && c != '(' | |
1a9745d2 | 3022 | && c != ':' && c != ',') |
f446fb22 | 3023 | { |
3024 | if (matched_type && c == ')') | |
3025 | { | |
3026 | gfc_next_ascii_char (); | |
3027 | return MATCH_YES; | |
3028 | } | |
3029 | return MATCH_NO; | |
3030 | } | |
18f3698a | 3031 | } |
3032 | ||
67a51c8e | 3033 | m = gfc_match_kind_spec (ts, false); |
4ee9c684 | 3034 | if (m == MATCH_NO && ts->type != BT_CHARACTER) |
9627a89d | 3035 | { |
3036 | m = gfc_match_old_kind_spec (ts); | |
3037 | if (gfc_validate_kind (ts->type, ts->kind, true) == -1) | |
3038 | return MATCH_ERROR; | |
3039 | } | |
4ee9c684 | 3040 | |
f446fb22 | 3041 | if (matched_type && gfc_match_char (')') != MATCH_YES) |
3042 | return MATCH_ERROR; | |
3043 | ||
077932f9 | 3044 | /* Defer association of the KIND expression of function results |
3045 | until after USE and IMPORT statements. */ | |
3046 | if ((gfc_current_state () == COMP_NONE && gfc_error_flag_test ()) | |
3047 | || gfc_matching_function) | |
3048 | return MATCH_YES; | |
3049 | ||
4ee9c684 | 3050 | if (m == MATCH_NO) |
3051 | m = MATCH_YES; /* No kind specifier found. */ | |
3052 | ||
3053 | return m; | |
3054 | } | |
3055 | ||
3056 | ||
39351103 | 3057 | /* Match an IMPLICIT NONE statement. Actually, this statement is |
3058 | already matched in parse.c, or we would not end up here in the | |
3059 | first place. So the only thing we need to check, is if there is | |
3060 | trailing garbage. If not, the match is successful. */ | |
3061 | ||
3062 | match | |
3063 | gfc_match_implicit_none (void) | |
3064 | { | |
0daab503 | 3065 | char c; |
3066 | match m; | |
3067 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
3068 | bool type = false; | |
3069 | bool external = false; | |
94fea777 | 3070 | locus cur_loc = gfc_current_locus; |
3071 | ||
3072 | if (gfc_current_ns->seen_implicit_none | |
3073 | || gfc_current_ns->has_implicit_none_export) | |
3074 | { | |
3075 | gfc_error ("Duplicate IMPLICIT NONE statement at %C"); | |
3076 | return MATCH_ERROR; | |
3077 | } | |
0daab503 | 3078 | |
3079 | gfc_gobble_whitespace (); | |
3080 | c = gfc_peek_ascii_char (); | |
3081 | if (c == '(') | |
3082 | { | |
3083 | (void) gfc_next_ascii_char (); | |
3084 | if (!gfc_notify_std (GFC_STD_F2015, "IMPORT NONE with spec list at %C")) | |
3085 | return MATCH_ERROR; | |
94fea777 | 3086 | |
3087 | gfc_gobble_whitespace (); | |
3088 | if (gfc_peek_ascii_char () == ')') | |
0daab503 | 3089 | { |
94fea777 | 3090 | (void) gfc_next_ascii_char (); |
3091 | type = true; | |
3092 | } | |
3093 | else | |
3094 | for(;;) | |
3095 | { | |
3096 | m = gfc_match (" %n", name); | |
3097 | if (m != MATCH_YES) | |
3098 | return MATCH_ERROR; | |
0daab503 | 3099 | |
94fea777 | 3100 | if (strcmp (name, "type") == 0) |
3101 | type = true; | |
3102 | else if (strcmp (name, "external") == 0) | |
3103 | external = true; | |
3104 | else | |
3105 | return MATCH_ERROR; | |
0daab503 | 3106 | |
94fea777 | 3107 | gfc_gobble_whitespace (); |
3108 | c = gfc_next_ascii_char (); | |
3109 | if (c == ',') | |
3110 | continue; | |
3111 | if (c == ')') | |
3112 | break; | |
3113 | return MATCH_ERROR; | |
3114 | } | |
0daab503 | 3115 | } |
3116 | else | |
3117 | type = true; | |
3118 | ||
3119 | if (gfc_match_eos () != MATCH_YES) | |
3120 | return MATCH_ERROR; | |
3121 | ||
94fea777 | 3122 | gfc_set_implicit_none (type, external, &cur_loc); |
0daab503 | 3123 | |
3124 | return MATCH_YES; | |
39351103 | 3125 | } |
3126 | ||
3127 | ||
3128 | /* Match the letter range(s) of an IMPLICIT statement. */ | |
3129 | ||
3130 | static match | |
b70528c7 | 3131 | match_implicit_range (void) |
39351103 | 3132 | { |
e0be6f02 | 3133 | char c, c1, c2; |
3134 | int inner; | |
39351103 | 3135 | locus cur_loc; |
3136 | ||
3137 | cur_loc = gfc_current_locus; | |
3138 | ||
3139 | gfc_gobble_whitespace (); | |
e0be6f02 | 3140 | c = gfc_next_ascii_char (); |
39351103 | 3141 | if (c != '(') |
3142 | { | |
3143 | gfc_error ("Missing character range in IMPLICIT at %C"); | |
3144 | goto bad; | |
3145 | } | |
3146 | ||
3147 | inner = 1; | |
3148 | while (inner) | |
3149 | { | |
3150 | gfc_gobble_whitespace (); | |
e0be6f02 | 3151 | c1 = gfc_next_ascii_char (); |
39351103 | 3152 | if (!ISALPHA (c1)) |
3153 | goto bad; | |
3154 | ||
3155 | gfc_gobble_whitespace (); | |
e0be6f02 | 3156 | c = gfc_next_ascii_char (); |
39351103 | 3157 | |
3158 | switch (c) | |
3159 | { | |
3160 | case ')': | |
f6d0e37a | 3161 | inner = 0; /* Fall through. */ |
39351103 | 3162 | |
3163 | case ',': | |
3164 | c2 = c1; | |
3165 | break; | |
3166 | ||
3167 | case '-': | |
3168 | gfc_gobble_whitespace (); | |
e0be6f02 | 3169 | c2 = gfc_next_ascii_char (); |
39351103 | 3170 | if (!ISALPHA (c2)) |
3171 | goto bad; | |
3172 | ||
3173 | gfc_gobble_whitespace (); | |
e0be6f02 | 3174 | c = gfc_next_ascii_char (); |
39351103 | 3175 | |
3176 | if ((c != ',') && (c != ')')) | |
3177 | goto bad; | |
3178 | if (c == ')') | |
3179 | inner = 0; | |
3180 | ||
3181 | break; | |
3182 | ||
3183 | default: | |
3184 | goto bad; | |
3185 | } | |
3186 | ||
3187 | if (c1 > c2) | |
3188 | { | |
3189 | gfc_error ("Letters must be in alphabetic order in " | |
3190 | "IMPLICIT statement at %C"); | |
3191 | goto bad; | |
3192 | } | |
3193 | ||
3194 | /* See if we can add the newly matched range to the pending | |
1a9745d2 | 3195 | implicits from this IMPLICIT statement. We do not check for |
3196 | conflicts with whatever earlier IMPLICIT statements may have | |
3197 | set. This is done when we've successfully finished matching | |
3198 | the current one. */ | |
60e19868 | 3199 | if (!gfc_add_new_implicit_range (c1, c2)) |
39351103 | 3200 | goto bad; |
3201 | } | |
3202 | ||
3203 | return MATCH_YES; | |
3204 | ||
3205 | bad: | |
3206 | gfc_syntax_error (ST_IMPLICIT); | |
3207 | ||
3208 | gfc_current_locus = cur_loc; | |
3209 | return MATCH_ERROR; | |
3210 | } | |
3211 | ||
3212 | ||
3213 | /* Match an IMPLICIT statement, storing the types for | |
3214 | gfc_set_implicit() if the statement is accepted by the parser. | |
3215 | There is a strange looking, but legal syntactic construction | |
3216 | possible. It looks like: | |
3217 | ||
3218 | IMPLICIT INTEGER (a-b) (c-d) | |
3219 | ||
3220 | This is legal if "a-b" is a constant expression that happens to | |
3221 | equal one of the legal kinds for integers. The real problem | |
3222 | happens with an implicit specification that looks like: | |
3223 | ||
3224 | IMPLICIT INTEGER (a-b) | |
3225 | ||
3226 | In this case, a typespec matcher that is "greedy" (as most of the | |
3227 | matchers are) gobbles the character range as a kindspec, leaving | |
3228 | nothing left. We therefore have to go a bit more slowly in the | |
3229 | matching process by inhibiting the kindspec checking during | |
3230 | typespec matching and checking for a kind later. */ | |
3231 | ||
3232 | match | |
3233 | gfc_match_implicit (void) | |
3234 | { | |
3235 | gfc_typespec ts; | |
3236 | locus cur_loc; | |
e0be6f02 | 3237 | char c; |
39351103 | 3238 | match m; |
3239 | ||
0daab503 | 3240 | if (gfc_current_ns->seen_implicit_none) |
3241 | { | |
3242 | gfc_error ("IMPLICIT statement at %C following an IMPLICIT NONE (type) " | |
3243 | "statement"); | |
3244 | return MATCH_ERROR; | |
3245 | } | |
3246 | ||
52179f31 | 3247 | gfc_clear_ts (&ts); |
3248 | ||
39351103 | 3249 | /* We don't allow empty implicit statements. */ |
3250 | if (gfc_match_eos () == MATCH_YES) | |
3251 | { | |
3252 | gfc_error ("Empty IMPLICIT statement at %C"); | |
3253 | return MATCH_ERROR; | |
3254 | } | |
3255 | ||
39351103 | 3256 | do |
3257 | { | |
b70528c7 | 3258 | /* First cleanup. */ |
3259 | gfc_clear_new_implicit (); | |
3260 | ||
39351103 | 3261 | /* A basic type is mandatory here. */ |
e8152f13 | 3262 | m = gfc_match_decl_type_spec (&ts, 1); |
39351103 | 3263 | if (m == MATCH_ERROR) |
3264 | goto error; | |
3265 | if (m == MATCH_NO) | |
3266 | goto syntax; | |
3267 | ||
3268 | cur_loc = gfc_current_locus; | |
b70528c7 | 3269 | m = match_implicit_range (); |
39351103 | 3270 | |
3271 | if (m == MATCH_YES) | |
3272 | { | |
b70528c7 | 3273 | /* We may have <TYPE> (<RANGE>). */ |
39351103 | 3274 | gfc_gobble_whitespace (); |
94fea777 | 3275 | c = gfc_peek_ascii_char (); |
3276 | if (c == ',' || c == '\n' || c == ';' || c == '!') | |
b70528c7 | 3277 | { |
3278 | /* Check for CHARACTER with no length parameter. */ | |
eeebe20b | 3279 | if (ts.type == BT_CHARACTER && !ts.u.cl) |
b70528c7 | 3280 | { |
b8a891cb | 3281 | ts.kind = gfc_default_character_kind; |
d270ce52 | 3282 | ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
126387b5 | 3283 | ts.u.cl->length = gfc_get_int_expr (gfc_default_integer_kind, |
3284 | NULL, 1); | |
b70528c7 | 3285 | } |
3286 | ||
3287 | /* Record the Successful match. */ | |
60e19868 | 3288 | if (!gfc_merge_new_implicit (&ts)) |
b70528c7 | 3289 | return MATCH_ERROR; |
94fea777 | 3290 | if (c == ',') |
3291 | c = gfc_next_ascii_char (); | |
3292 | else if (gfc_match_eos () == MATCH_ERROR) | |
3293 | goto error; | |
b70528c7 | 3294 | continue; |
3295 | } | |
39351103 | 3296 | |
3297 | gfc_current_locus = cur_loc; | |
3298 | } | |
3299 | ||
b70528c7 | 3300 | /* Discard the (incorrectly) matched range. */ |
3301 | gfc_clear_new_implicit (); | |
3302 | ||
3303 | /* Last chance -- check <TYPE> <SELECTOR> (<RANGE>). */ | |
3304 | if (ts.type == BT_CHARACTER) | |
10f5dcc0 | 3305 | m = gfc_match_char_spec (&ts); |
b70528c7 | 3306 | else |
39351103 | 3307 | { |
67a51c8e | 3308 | m = gfc_match_kind_spec (&ts, false); |
39351103 | 3309 | if (m == MATCH_NO) |
b70528c7 | 3310 | { |
3311 | m = gfc_match_old_kind_spec (&ts); | |
3312 | if (m == MATCH_ERROR) | |
3313 | goto error; | |
3314 | if (m == MATCH_NO) | |
3315 | goto syntax; | |
3316 | } | |
39351103 | 3317 | } |
b70528c7 | 3318 | if (m == MATCH_ERROR) |
3319 | goto error; | |
39351103 | 3320 | |
b70528c7 | 3321 | m = match_implicit_range (); |
39351103 | 3322 | if (m == MATCH_ERROR) |
3323 | goto error; | |
3324 | if (m == MATCH_NO) | |
3325 | goto syntax; | |
3326 | ||
3327 | gfc_gobble_whitespace (); | |
e0be6f02 | 3328 | c = gfc_next_ascii_char (); |
94fea777 | 3329 | if (c != ',' && gfc_match_eos () != MATCH_YES) |
39351103 | 3330 | goto syntax; |
3331 | ||
60e19868 | 3332 | if (!gfc_merge_new_implicit (&ts)) |
b70528c7 | 3333 | return MATCH_ERROR; |
39351103 | 3334 | } |
3335 | while (c == ','); | |
3336 | ||
b70528c7 | 3337 | return MATCH_YES; |
39351103 | 3338 | |
3339 | syntax: | |
3340 | gfc_syntax_error (ST_IMPLICIT); | |
3341 | ||
3342 | error: | |
3343 | return MATCH_ERROR; | |
3344 | } | |
3345 | ||
f6d0e37a | 3346 | |
d67fc9ae | 3347 | match |
3348 | gfc_match_import (void) | |
3349 | { | |
3350 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
3351 | match m; | |
3352 | gfc_symbol *sym; | |
3353 | gfc_symtree *st; | |
3354 | ||
f6d0e37a | 3355 | if (gfc_current_ns->proc_name == NULL |
3356 | || gfc_current_ns->proc_name->attr.if_source != IFSRC_IFBODY) | |
d67fc9ae | 3357 | { |
3358 | gfc_error ("IMPORT statement at %C only permitted in " | |
3359 | "an INTERFACE body"); | |
3360 | return MATCH_ERROR; | |
3361 | } | |
3362 | ||
4b8eb6ca | 3363 | if (gfc_current_ns->proc_name->attr.module_procedure) |
3364 | { | |
3365 | gfc_error ("F2008: C1210 IMPORT statement at %C is not permitted " | |
3366 | "in a module procedure interface body"); | |
3367 | return MATCH_ERROR; | |
3368 | } | |
3369 | ||
60e19868 | 3370 | if (!gfc_notify_std (GFC_STD_F2003, "IMPORT statement at %C")) |
d67fc9ae | 3371 | return MATCH_ERROR; |
3372 | ||
3373 | if (gfc_match_eos () == MATCH_YES) | |
3374 | { | |
3375 | /* All host variables should be imported. */ | |
3376 | gfc_current_ns->has_import_set = 1; | |
3377 | return MATCH_YES; | |
3378 | } | |
3379 | ||
3380 | if (gfc_match (" ::") == MATCH_YES) | |
3381 | { | |
3382 | if (gfc_match_eos () == MATCH_YES) | |
1a9745d2 | 3383 | { |
3384 | gfc_error ("Expecting list of named entities at %C"); | |
3385 | return MATCH_ERROR; | |
3386 | } | |
d67fc9ae | 3387 | } |
3388 | ||
3389 | for(;;) | |
3390 | { | |
495e197c | 3391 | sym = NULL; |
d67fc9ae | 3392 | m = gfc_match (" %n", name); |
3393 | switch (m) | |
3394 | { | |
3395 | case MATCH_YES: | |
096d4ad9 | 3396 | if (gfc_current_ns->parent != NULL |
f6d0e37a | 3397 | && gfc_find_symbol (name, gfc_current_ns->parent, 1, &sym)) |
096d4ad9 | 3398 | { |
716da296 | 3399 | gfc_error ("Type name %qs at %C is ambiguous", name); |
096d4ad9 | 3400 | return MATCH_ERROR; |
3401 | } | |
6b010511 | 3402 | else if (!sym && gfc_current_ns->proc_name->ns->parent != NULL |
f6d0e37a | 3403 | && gfc_find_symbol (name, |
3404 | gfc_current_ns->proc_name->ns->parent, | |
3405 | 1, &sym)) | |
1a9745d2 | 3406 | { |
716da296 | 3407 | gfc_error ("Type name %qs at %C is ambiguous", name); |
1a9745d2 | 3408 | return MATCH_ERROR; |
3409 | } | |
3410 | ||
3411 | if (sym == NULL) | |
3412 | { | |
716da296 | 3413 | gfc_error ("Cannot IMPORT %qs from host scoping unit " |
1a9745d2 | 3414 | "at %C - does not exist.", name); |
3415 | return MATCH_ERROR; | |
3416 | } | |
3417 | ||
d67dd34f | 3418 | if (gfc_find_symtree (gfc_current_ns->sym_root, name)) |
1a9745d2 | 3419 | { |
6f521718 | 3420 | gfc_warning (0, "%qs is already IMPORTed from host scoping unit " |
4166acc7 | 3421 | "at %C", name); |
1a9745d2 | 3422 | goto next_item; |
3423 | } | |
3424 | ||
d67dd34f | 3425 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); |
1a9745d2 | 3426 | st->n.sym = sym; |
3427 | sym->refs++; | |
c723595c | 3428 | sym->attr.imported = 1; |
d67fc9ae | 3429 | |
c2958b6b | 3430 | if (sym->attr.generic && (sym = gfc_find_dt_in_generic (sym))) |
3431 | { | |
3432 | /* The actual derived type is stored in a symtree with the first | |
df084314 | 3433 | letter of the name capitalized; the symtree with the all |
293d72e0 | 3434 | lower-case name contains the associated generic function. */ |
c2958b6b | 3435 | st = gfc_new_symtree (&gfc_current_ns->sym_root, |
3436 | gfc_get_string ("%c%s", | |
d67dd34f | 3437 | (char) TOUPPER ((unsigned char) name[0]), |
3438 | &name[1])); | |
c2958b6b | 3439 | st->n.sym = sym; |
3440 | sym->refs++; | |
3441 | sym->attr.imported = 1; | |
3442 | } | |
3443 | ||
d67fc9ae | 3444 | goto next_item; |
3445 | ||
3446 | case MATCH_NO: | |
3447 | break; | |
3448 | ||
3449 | case MATCH_ERROR: | |
3450 | return MATCH_ERROR; | |
3451 | } | |
3452 | ||
3453 | next_item: | |
3454 | if (gfc_match_eos () == MATCH_YES) | |
3455 | break; | |
3456 | if (gfc_match_char (',') != MATCH_YES) | |
3457 | goto syntax; | |
3458 | } | |
3459 | ||
3460 | return MATCH_YES; | |
3461 | ||
3462 | syntax: | |
3463 | gfc_error ("Syntax error in IMPORT statement at %C"); | |
3464 | return MATCH_ERROR; | |
3465 | } | |
39351103 | 3466 | |
f6d0e37a | 3467 | |
c72e5f7e | 3468 | /* A minimal implementation of gfc_match without whitespace, escape |
3469 | characters or variable arguments. Returns true if the next | |
3470 | characters match the TARGET template exactly. */ | |
3471 | ||
3472 | static bool | |
3473 | match_string_p (const char *target) | |
3474 | { | |
3475 | const char *p; | |
3476 | ||
3477 | for (p = target; *p; p++) | |
e0be6f02 | 3478 | if ((char) gfc_next_ascii_char () != *p) |
c72e5f7e | 3479 | return false; |
3480 | return true; | |
3481 | } | |
3482 | ||
4ee9c684 | 3483 | /* Matches an attribute specification including array specs. If |
3484 | successful, leaves the variables current_attr and current_as | |
3485 | holding the specification. Also sets the colon_seen variable for | |
3486 | later use by matchers associated with initializations. | |
3487 | ||
3488 | This subroutine is a little tricky in the sense that we don't know | |
3489 | if we really have an attr-spec until we hit the double colon. | |
3490 | Until that time, we can only return MATCH_NO. This forces us to | |
3491 | check for duplicate specification at this level. */ | |
3492 | ||
3493 | static match | |
3494 | match_attr_spec (void) | |
3495 | { | |
4ee9c684 | 3496 | /* Modifiers that can exist in a type statement. */ |
d55c3689 | 3497 | enum |
4ee9c684 | 3498 | { GFC_DECL_BEGIN = 0, |
3499 | DECL_ALLOCATABLE = GFC_DECL_BEGIN, DECL_DIMENSION, DECL_EXTERNAL, | |
3500 | DECL_IN, DECL_OUT, DECL_INOUT, DECL_INTRINSIC, DECL_OPTIONAL, | |
3ea52af3 | 3501 | DECL_PARAMETER, DECL_POINTER, DECL_PROTECTED, DECL_PRIVATE, |
3502 | DECL_PUBLIC, DECL_SAVE, DECL_TARGET, DECL_VALUE, DECL_VOLATILE, | |
b3c3927c | 3503 | DECL_IS_BIND_C, DECL_CODIMENSION, DECL_ASYNCHRONOUS, DECL_CONTIGUOUS, |
3504 | DECL_NONE, GFC_DECL_END /* Sentinel */ | |
d55c3689 | 3505 | }; |
4ee9c684 | 3506 | |
3507 | /* GFC_DECL_END is the sentinel, index starts at 0. */ | |
3508 | #define NUM_DECL GFC_DECL_END | |
3509 | ||
4ee9c684 | 3510 | locus start, seen_at[NUM_DECL]; |
3511 | int seen[NUM_DECL]; | |
9f1b7d17 | 3512 | unsigned int d; |
4ee9c684 | 3513 | const char *attr; |
3514 | match m; | |
60e19868 | 3515 | bool t; |
4ee9c684 | 3516 | |
3517 | gfc_clear_attr (¤t_attr); | |
cbb9e6aa | 3518 | start = gfc_current_locus; |
4ee9c684 | 3519 | |
3520 | current_as = NULL; | |
3521 | colon_seen = 0; | |
3522 | ||
3523 | /* See if we get all of the keywords up to the final double colon. */ | |
3524 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3525 | seen[d] = 0; | |
3526 | ||
3527 | for (;;) | |
3528 | { | |
e0be6f02 | 3529 | char ch; |
c5d33754 | 3530 | |
c72e5f7e | 3531 | d = DECL_NONE; |
3532 | gfc_gobble_whitespace (); | |
3533 | ||
e0be6f02 | 3534 | ch = gfc_next_ascii_char (); |
c72e5f7e | 3535 | if (ch == ':') |
3536 | { | |
3537 | /* This is the successful exit condition for the loop. */ | |
e0be6f02 | 3538 | if (gfc_next_ascii_char () == ':') |
c72e5f7e | 3539 | break; |
3540 | } | |
3541 | else if (ch == ',') | |
c5d33754 | 3542 | { |
c5d33754 | 3543 | gfc_gobble_whitespace (); |
e0be6f02 | 3544 | switch (gfc_peek_ascii_char ()) |
c5d33754 | 3545 | { |
c72e5f7e | 3546 | case 'a': |
738928be | 3547 | gfc_next_ascii_char (); |
3548 | switch (gfc_next_ascii_char ()) | |
3549 | { | |
3550 | case 'l': | |
3551 | if (match_string_p ("locatable")) | |
3552 | { | |
3553 | /* Matched "allocatable". */ | |
3554 | d = DECL_ALLOCATABLE; | |
3555 | } | |
3556 | break; | |
3557 | ||
3558 | case 's': | |
3559 | if (match_string_p ("ynchronous")) | |
3560 | { | |
3561 | /* Matched "asynchronous". */ | |
3562 | d = DECL_ASYNCHRONOUS; | |
3563 | } | |
3564 | break; | |
3565 | } | |
b3c3927c | 3566 | break; |
c72e5f7e | 3567 | |
3568 | case 'b': | |
c5d33754 | 3569 | /* Try and match the bind(c). */ |
75ae7f6c | 3570 | m = gfc_match_bind_c (NULL, true); |
5cf92482 | 3571 | if (m == MATCH_YES) |
c5d33754 | 3572 | d = DECL_IS_BIND_C; |
5cf92482 | 3573 | else if (m == MATCH_ERROR) |
3574 | goto cleanup; | |
c72e5f7e | 3575 | break; |
3576 | ||
aff518b0 | 3577 | case 'c': |
b3c3927c | 3578 | gfc_next_ascii_char (); |
3579 | if ('o' != gfc_next_ascii_char ()) | |
3580 | break; | |
3581 | switch (gfc_next_ascii_char ()) | |
3582 | { | |
3583 | case 'd': | |
3584 | if (match_string_p ("imension")) | |
3585 | { | |
3586 | d = DECL_CODIMENSION; | |
3587 | break; | |
3588 | } | |
3589 | case 'n': | |
3590 | if (match_string_p ("tiguous")) | |
3591 | { | |
3592 | d = DECL_CONTIGUOUS; | |
3593 | break; | |
3594 | } | |
3595 | } | |
aff518b0 | 3596 | break; |
3597 | ||
c72e5f7e | 3598 | case 'd': |
3599 | if (match_string_p ("dimension")) | |
3600 | d = DECL_DIMENSION; | |
3601 | break; | |
3602 | ||
3603 | case 'e': | |
3604 | if (match_string_p ("external")) | |
3605 | d = DECL_EXTERNAL; | |
3606 | break; | |
3607 | ||
3608 | case 'i': | |
3609 | if (match_string_p ("int")) | |
3610 | { | |
e0be6f02 | 3611 | ch = gfc_next_ascii_char (); |
c72e5f7e | 3612 | if (ch == 'e') |
3613 | { | |
3614 | if (match_string_p ("nt")) | |
3615 | { | |
3616 | /* Matched "intent". */ | |
3617 | /* TODO: Call match_intent_spec from here. */ | |
3618 | if (gfc_match (" ( in out )") == MATCH_YES) | |
3619 | d = DECL_INOUT; | |
3620 | else if (gfc_match (" ( in )") == MATCH_YES) | |
3621 | d = DECL_IN; | |
3622 | else if (gfc_match (" ( out )") == MATCH_YES) | |
3623 | d = DECL_OUT; | |
3624 | } | |
3625 | } | |
3626 | else if (ch == 'r') | |
3627 | { | |
3628 | if (match_string_p ("insic")) | |
3629 | { | |
3630 | /* Matched "intrinsic". */ | |
3631 | d = DECL_INTRINSIC; | |
3632 | } | |
3633 | } | |
3634 | } | |
3635 | break; | |
3636 | ||
3637 | case 'o': | |
3638 | if (match_string_p ("optional")) | |
3639 | d = DECL_OPTIONAL; | |
3640 | break; | |
3641 | ||
3642 | case 'p': | |
e0be6f02 | 3643 | gfc_next_ascii_char (); |
3644 | switch (gfc_next_ascii_char ()) | |
c72e5f7e | 3645 | { |
3646 | case 'a': | |
3647 | if (match_string_p ("rameter")) | |
3648 | { | |
3649 | /* Matched "parameter". */ | |
3650 | d = DECL_PARAMETER; | |
3651 | } | |
3652 | break; | |
3653 | ||
3654 | case 'o': | |
3655 | if (match_string_p ("inter")) | |
3656 | { | |
3657 | /* Matched "pointer". */ | |
3658 | d = DECL_POINTER; | |
3659 | } | |
3660 | break; | |
3661 | ||
3662 | case 'r': | |
e0be6f02 | 3663 | ch = gfc_next_ascii_char (); |
c72e5f7e | 3664 | if (ch == 'i') |
3665 | { | |
3666 | if (match_string_p ("vate")) | |
3667 | { | |
3668 | /* Matched "private". */ | |
3669 | d = DECL_PRIVATE; | |
3670 | } | |
3671 | } | |
3672 | else if (ch == 'o') | |
3673 | { | |
3674 | if (match_string_p ("tected")) | |
3675 | { | |
3676 | /* Matched "protected". */ | |
3677 | d = DECL_PROTECTED; | |
3678 | } | |
3679 | } | |
3680 | break; | |
3681 | ||
3682 | case 'u': | |
3683 | if (match_string_p ("blic")) | |
3684 | { | |
3685 | /* Matched "public". */ | |
3686 | d = DECL_PUBLIC; | |
3687 | } | |
3688 | break; | |
3689 | } | |
3690 | break; | |
3691 | ||
3692 | case 's': | |
3693 | if (match_string_p ("save")) | |
3694 | d = DECL_SAVE; | |
3695 | break; | |
3696 | ||
3697 | case 't': | |
3698 | if (match_string_p ("target")) | |
3699 | d = DECL_TARGET; | |
3700 | break; | |
3701 | ||
3702 | case 'v': | |
e0be6f02 | 3703 | gfc_next_ascii_char (); |
3704 | ch = gfc_next_ascii_char (); | |
c72e5f7e | 3705 | if (ch == 'a') |
3706 | { | |
3707 | if (match_string_p ("lue")) | |
3708 | { | |
3709 | /* Matched "value". */ | |
3710 | d = DECL_VALUE; | |
3711 | } | |
3712 | } | |
3713 | else if (ch == 'o') | |
3714 | { | |
3715 | if (match_string_p ("latile")) | |
3716 | { | |
3717 | /* Matched "volatile". */ | |
3718 | d = DECL_VOLATILE; | |
3719 | } | |
3720 | } | |
3721 | break; | |
c5d33754 | 3722 | } |
3723 | } | |
f3f9b222 | 3724 | |
c72e5f7e | 3725 | /* No double colon and no recognizable decl_type, so assume that |
3726 | we've been looking at something else the whole time. */ | |
3727 | if (d == DECL_NONE) | |
3728 | { | |
3729 | m = MATCH_NO; | |
3730 | goto cleanup; | |
3731 | } | |
e14bee04 | 3732 | |
7e221851 | 3733 | /* Check to make sure any parens are paired up correctly. */ |
3734 | if (gfc_match_parens () == MATCH_ERROR) | |
3735 | { | |
3736 | m = MATCH_ERROR; | |
3737 | goto cleanup; | |
3738 | } | |
3739 | ||
4ee9c684 | 3740 | seen[d]++; |
cbb9e6aa | 3741 | seen_at[d] = gfc_current_locus; |
4ee9c684 | 3742 | |
e97ac7c0 | 3743 | if (d == DECL_DIMENSION || d == DECL_CODIMENSION) |
4ee9c684 | 3744 | { |
e97ac7c0 | 3745 | gfc_array_spec *as = NULL; |
4ee9c684 | 3746 | |
e97ac7c0 | 3747 | m = gfc_match_array_spec (&as, d == DECL_DIMENSION, |
3748 | d == DECL_CODIMENSION); | |
3749 | ||
3750 | if (current_as == NULL) | |
3751 | current_as = as; | |
3752 | else if (m == MATCH_YES) | |
4ee9c684 | 3753 | { |
60e19868 | 3754 | if (!merge_array_spec (as, current_as, false)) |
9b58b4c7 | 3755 | m = MATCH_ERROR; |
434f0922 | 3756 | free (as); |
4ee9c684 | 3757 | } |
3758 | ||
aff518b0 | 3759 | if (m == MATCH_NO) |
3760 | { | |
e97ac7c0 | 3761 | if (d == DECL_CODIMENSION) |
3762 | gfc_error ("Missing codimension specification at %C"); | |
3763 | else | |
3764 | gfc_error ("Missing dimension specification at %C"); | |
aff518b0 | 3765 | m = MATCH_ERROR; |
3766 | } | |
3767 | ||
3768 | if (m == MATCH_ERROR) | |
3769 | goto cleanup; | |
3770 | } | |
4ee9c684 | 3771 | } |
3772 | ||
4ee9c684 | 3773 | /* Since we've seen a double colon, we have to be looking at an |
3774 | attr-spec. This means that we can now issue errors. */ | |
3775 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3776 | if (seen[d] > 1) | |
3777 | { | |
3778 | switch (d) | |
3779 | { | |
3780 | case DECL_ALLOCATABLE: | |
3781 | attr = "ALLOCATABLE"; | |
3782 | break; | |
738928be | 3783 | case DECL_ASYNCHRONOUS: |
3784 | attr = "ASYNCHRONOUS"; | |
3785 | break; | |
aff518b0 | 3786 | case DECL_CODIMENSION: |
3787 | attr = "CODIMENSION"; | |
3788 | break; | |
b3c3927c | 3789 | case DECL_CONTIGUOUS: |
3790 | attr = "CONTIGUOUS"; | |
3791 | break; | |
4ee9c684 | 3792 | case DECL_DIMENSION: |
3793 | attr = "DIMENSION"; | |
3794 | break; | |
3795 | case DECL_EXTERNAL: | |
3796 | attr = "EXTERNAL"; | |
3797 | break; | |
3798 | case DECL_IN: | |
3799 | attr = "INTENT (IN)"; | |
3800 | break; | |
3801 | case DECL_OUT: | |
3802 | attr = "INTENT (OUT)"; | |
3803 | break; | |
3804 | case DECL_INOUT: | |
3805 | attr = "INTENT (IN OUT)"; | |
3806 | break; | |
3807 | case DECL_INTRINSIC: | |
3808 | attr = "INTRINSIC"; | |
3809 | break; | |
3810 | case DECL_OPTIONAL: | |
3811 | attr = "OPTIONAL"; | |
3812 | break; | |
3813 | case DECL_PARAMETER: | |
3814 | attr = "PARAMETER"; | |
3815 | break; | |
3816 | case DECL_POINTER: | |
3817 | attr = "POINTER"; | |
3818 | break; | |
3ea52af3 | 3819 | case DECL_PROTECTED: |
3820 | attr = "PROTECTED"; | |
3821 | break; | |
4ee9c684 | 3822 | case DECL_PRIVATE: |
3823 | attr = "PRIVATE"; | |
3824 | break; | |
3825 | case DECL_PUBLIC: | |
3826 | attr = "PUBLIC"; | |
3827 | break; | |
3828 | case DECL_SAVE: | |
3829 | attr = "SAVE"; | |
3830 | break; | |
3831 | case DECL_TARGET: | |
3832 | attr = "TARGET"; | |
3833 | break; | |
c5d33754 | 3834 | case DECL_IS_BIND_C: |
3835 | attr = "IS_BIND_C"; | |
3836 | break; | |
3837 | case DECL_VALUE: | |
3838 | attr = "VALUE"; | |
3839 | break; | |
ef814c81 | 3840 | case DECL_VOLATILE: |
3841 | attr = "VOLATILE"; | |
3842 | break; | |
4ee9c684 | 3843 | default: |
f6d0e37a | 3844 | attr = NULL; /* This shouldn't happen. */ |
4ee9c684 | 3845 | } |
3846 | ||
3847 | gfc_error ("Duplicate %s attribute at %L", attr, &seen_at[d]); | |
3848 | m = MATCH_ERROR; | |
3849 | goto cleanup; | |
3850 | } | |
3851 | ||
3852 | /* Now that we've dealt with duplicate attributes, add the attributes | |
3853 | to the current attribute. */ | |
3854 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3855 | { | |
3856 | if (seen[d] == 0) | |
3857 | continue; | |
3858 | ||
3859 | if (gfc_current_state () == COMP_DERIVED | |
aff518b0 | 3860 | && d != DECL_DIMENSION && d != DECL_CODIMENSION |
3861 | && d != DECL_POINTER && d != DECL_PRIVATE | |
b3c3927c | 3862 | && d != DECL_PUBLIC && d != DECL_CONTIGUOUS && d != DECL_NONE) |
4ee9c684 | 3863 | { |
2294b616 | 3864 | if (d == DECL_ALLOCATABLE) |
3865 | { | |
60e19868 | 3866 | if (!gfc_notify_std (GFC_STD_F2003, "ALLOCATABLE " |
3867 | "attribute at %C in a TYPE definition")) | |
2294b616 | 3868 | { |
3869 | m = MATCH_ERROR; | |
3870 | goto cleanup; | |
3871 | } | |
1a9745d2 | 3872 | } |
3873 | else | |
2294b616 | 3874 | { |
3875 | gfc_error ("Attribute at %L is not allowed in a TYPE definition", | |
e14bee04 | 3876 | &seen_at[d]); |
2294b616 | 3877 | m = MATCH_ERROR; |
3878 | goto cleanup; | |
3879 | } | |
4ee9c684 | 3880 | } |
3881 | ||
ea13b9b7 | 3882 | if ((d == DECL_PRIVATE || d == DECL_PUBLIC) |
1a9745d2 | 3883 | && gfc_current_state () != COMP_MODULE) |
ea13b9b7 | 3884 | { |
3885 | if (d == DECL_PRIVATE) | |
3886 | attr = "PRIVATE"; | |
3887 | else | |
3888 | attr = "PUBLIC"; | |
e14bee04 | 3889 | if (gfc_current_state () == COMP_DERIVED |
3890 | && gfc_state_stack->previous | |
3891 | && gfc_state_stack->previous->state == COMP_MODULE) | |
3892 | { | |
60e19868 | 3893 | if (!gfc_notify_std (GFC_STD_F2003, "Attribute %s " |
3894 | "at %L in a TYPE definition", attr, | |
3895 | &seen_at[d])) | |
e14bee04 | 3896 | { |
3897 | m = MATCH_ERROR; | |
3898 | goto cleanup; | |
3899 | } | |
3900 | } | |
3901 | else | |
3902 | { | |
3903 | gfc_error ("%s attribute at %L is not allowed outside of the " | |
3904 | "specification part of a module", attr, &seen_at[d]); | |
3905 | m = MATCH_ERROR; | |
3906 | goto cleanup; | |
3907 | } | |
ea13b9b7 | 3908 | } |
3909 | ||
4ee9c684 | 3910 | switch (d) |
3911 | { | |
3912 | case DECL_ALLOCATABLE: | |
3913 | t = gfc_add_allocatable (¤t_attr, &seen_at[d]); | |
3914 | break; | |
3915 | ||
738928be | 3916 | case DECL_ASYNCHRONOUS: |
60e19868 | 3917 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS attribute at %C")) |
3918 | t = false; | |
738928be | 3919 | else |
3920 | t = gfc_add_asynchronous (¤t_attr, NULL, &seen_at[d]); | |
3921 | break; | |
3922 | ||
aff518b0 | 3923 | case DECL_CODIMENSION: |
3924 | t = gfc_add_codimension (¤t_attr, NULL, &seen_at[d]); | |
3925 | break; | |
3926 | ||
b3c3927c | 3927 | case DECL_CONTIGUOUS: |
60e19868 | 3928 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS attribute at %C")) |
3929 | t = false; | |
b3c3927c | 3930 | else |
3931 | t = gfc_add_contiguous (¤t_attr, NULL, &seen_at[d]); | |
3932 | break; | |
3933 | ||
4ee9c684 | 3934 | case DECL_DIMENSION: |
950683ed | 3935 | t = gfc_add_dimension (¤t_attr, NULL, &seen_at[d]); |
4ee9c684 | 3936 | break; |
3937 | ||
3938 | case DECL_EXTERNAL: | |
3939 | t = gfc_add_external (¤t_attr, &seen_at[d]); | |
3940 | break; | |
3941 | ||
3942 | case DECL_IN: | |
3943 | t = gfc_add_intent (¤t_attr, INTENT_IN, &seen_at[d]); | |
3944 | break; | |
3945 | ||
3946 | case DECL_OUT: | |
3947 | t = gfc_add_intent (¤t_attr, INTENT_OUT, &seen_at[d]); | |
3948 | break; | |
3949 | ||
3950 | case DECL_INOUT: | |
3951 | t = gfc_add_intent (¤t_attr, INTENT_INOUT, &seen_at[d]); | |
3952 | break; | |
3953 | ||
3954 | case DECL_INTRINSIC: | |
3955 | t = gfc_add_intrinsic (¤t_attr, &seen_at[d]); | |
3956 | break; | |
3957 | ||
3958 | case DECL_OPTIONAL: | |
3959 | t = gfc_add_optional (¤t_attr, &seen_at[d]); | |
3960 | break; | |
3961 | ||
3962 | case DECL_PARAMETER: | |
950683ed | 3963 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, &seen_at[d]); |
4ee9c684 | 3964 | break; |
3965 | ||
3966 | case DECL_POINTER: | |
3967 | t = gfc_add_pointer (¤t_attr, &seen_at[d]); | |
3968 | break; | |
3969 | ||
3ea52af3 | 3970 | case DECL_PROTECTED: |
8371b2e9 | 3971 | if (gfc_current_state () != COMP_MODULE |
3972 | || (gfc_current_ns->proc_name | |
3973 | && gfc_current_ns->proc_name->attr.flavor != FL_MODULE)) | |
3ea52af3 | 3974 | { |
3975 | gfc_error ("PROTECTED at %C only allowed in specification " | |
3976 | "part of a module"); | |
60e19868 | 3977 | t = false; |
3ea52af3 | 3978 | break; |
3979 | } | |
3980 | ||
60e19868 | 3981 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED attribute at %C")) |
3982 | t = false; | |
3ea52af3 | 3983 | else |
3984 | t = gfc_add_protected (¤t_attr, NULL, &seen_at[d]); | |
3985 | break; | |
3986 | ||
4ee9c684 | 3987 | case DECL_PRIVATE: |
950683ed | 3988 | t = gfc_add_access (¤t_attr, ACCESS_PRIVATE, NULL, |
3989 | &seen_at[d]); | |
4ee9c684 | 3990 | break; |
3991 | ||
3992 | case DECL_PUBLIC: | |
950683ed | 3993 | t = gfc_add_access (¤t_attr, ACCESS_PUBLIC, NULL, |
3994 | &seen_at[d]); | |
4ee9c684 | 3995 | break; |
3996 | ||
3997 | case DECL_SAVE: | |
23d075f4 | 3998 | t = gfc_add_save (¤t_attr, SAVE_EXPLICIT, NULL, &seen_at[d]); |
4ee9c684 | 3999 | break; |
4000 | ||
4001 | case DECL_TARGET: | |
4002 | t = gfc_add_target (¤t_attr, &seen_at[d]); | |
4003 | break; | |
4004 | ||
c5d33754 | 4005 | case DECL_IS_BIND_C: |
4006 | t = gfc_add_is_bind_c(¤t_attr, NULL, &seen_at[d], 0); | |
4007 | break; | |
8db94b3b | 4008 | |
8f6339b6 | 4009 | case DECL_VALUE: |
60e19868 | 4010 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE attribute at %C")) |
4011 | t = false; | |
8f6339b6 | 4012 | else |
4013 | t = gfc_add_value (¤t_attr, NULL, &seen_at[d]); | |
4014 | break; | |
4015 | ||
ef814c81 | 4016 | case DECL_VOLATILE: |
60e19868 | 4017 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE attribute at %C")) |
4018 | t = false; | |
ef814c81 | 4019 | else |
4020 | t = gfc_add_volatile (¤t_attr, NULL, &seen_at[d]); | |
4021 | break; | |
4022 | ||
4ee9c684 | 4023 | default: |
4024 | gfc_internal_error ("match_attr_spec(): Bad attribute"); | |
4025 | } | |
4026 | ||
60e19868 | 4027 | if (!t) |
4ee9c684 | 4028 | { |
4029 | m = MATCH_ERROR; | |
4030 | goto cleanup; | |
4031 | } | |
4032 | } | |
4033 | ||
c25834c9 | 4034 | /* Since Fortran 2008 module variables implicitly have the SAVE attribute. */ |
4b8eb6ca | 4035 | if ((gfc_current_state () == COMP_MODULE |
4036 | || gfc_current_state () == COMP_SUBMODULE) | |
4037 | && !current_attr.save | |
c25834c9 | 4038 | && (gfc_option.allow_std & GFC_STD_F2008) != 0) |
23d075f4 | 4039 | current_attr.save = SAVE_IMPLICIT; |
4040 | ||
4ee9c684 | 4041 | colon_seen = 1; |
4042 | return MATCH_YES; | |
4043 | ||
4044 | cleanup: | |
cbb9e6aa | 4045 | gfc_current_locus = start; |
4ee9c684 | 4046 | gfc_free_array_spec (current_as); |
4047 | current_as = NULL; | |
4048 | return m; | |
4049 | } | |
4050 | ||
4051 | ||
c5d33754 | 4052 | /* Set the binding label, dest_label, either with the binding label |
4053 | stored in the given gfc_typespec, ts, or if none was provided, it | |
4054 | will be the symbol name in all lower case, as required by the draft | |
4055 | (J3/04-007, section 15.4.1). If a binding label was given and | |
4056 | there is more than one argument (num_idents), it is an error. */ | |
4057 | ||
60e19868 | 4058 | static bool |
8db94b3b | 4059 | set_binding_label (const char **dest_label, const char *sym_name, |
1d8a57d8 | 4060 | int num_idents) |
c5d33754 | 4061 | { |
825718f9 | 4062 | if (num_idents > 1 && has_name_equals) |
c5d33754 | 4063 | { |
825718f9 | 4064 | gfc_error ("Multiple identifiers provided with " |
4065 | "single NAME= specifier at %C"); | |
60e19868 | 4066 | return false; |
825718f9 | 4067 | } |
c5d33754 | 4068 | |
7b2060ba | 4069 | if (curr_binding_label) |
df084314 | 4070 | /* Binding label given; store in temp holder till have sym. */ |
7b2060ba | 4071 | *dest_label = curr_binding_label; |
c5d33754 | 4072 | else |
4073 | { | |
4074 | /* No binding label given, and the NAME= specifier did not exist, | |
4075 | which means there was no NAME="". */ | |
4076 | if (sym_name != NULL && has_name_equals == 0) | |
7b2060ba | 4077 | *dest_label = IDENTIFIER_POINTER (get_identifier (sym_name)); |
c5d33754 | 4078 | } |
8db94b3b | 4079 | |
60e19868 | 4080 | return true; |
c5d33754 | 4081 | } |
4082 | ||
4083 | ||
4084 | /* Set the status of the given common block as being BIND(C) or not, | |
4085 | depending on the given parameter, is_bind_c. */ | |
4086 | ||
4087 | void | |
4088 | set_com_block_bind_c (gfc_common_head *com_block, int is_bind_c) | |
4089 | { | |
4090 | com_block->is_bind_c = is_bind_c; | |
4091 | return; | |
4092 | } | |
4093 | ||
4094 | ||
4095 | /* Verify that the given gfc_typespec is for a C interoperable type. */ | |
4096 | ||
60e19868 | 4097 | bool |
2564c57a | 4098 | gfc_verify_c_interop (gfc_typespec *ts) |
c5d33754 | 4099 | { |
eeebe20b | 4100 | if (ts->type == BT_DERIVED && ts->u.derived != NULL) |
5f9b1308 | 4101 | return (ts->u.derived->ts.is_c_interop || ts->u.derived->attr.is_bind_c) |
60e19868 | 4102 | ? true : false; |
2564c57a | 4103 | else if (ts->type == BT_CLASS) |
60e19868 | 4104 | return false; |
8c2d8d6d | 4105 | else if (ts->is_c_interop != 1 && ts->type != BT_ASSUMED) |
60e19868 | 4106 | return false; |
8c2d8d6d | 4107 | |
60e19868 | 4108 | return true; |
c5d33754 | 4109 | } |
4110 | ||
4111 | ||
4112 | /* Verify that the variables of a given common block, which has been | |
4113 | defined with the attribute specifier bind(c), to be of a C | |
4114 | interoperable type. Errors will be reported here, if | |
4115 | encountered. */ | |
4116 | ||
60e19868 | 4117 | bool |
c5d33754 | 4118 | verify_com_block_vars_c_interop (gfc_common_head *com_block) |
4119 | { | |
4120 | gfc_symbol *curr_sym = NULL; | |
60e19868 | 4121 | bool retval = true; |
c5d33754 | 4122 | |
4123 | curr_sym = com_block->head; | |
8db94b3b | 4124 | |
c5d33754 | 4125 | /* Make sure we have at least one symbol. */ |
4126 | if (curr_sym == NULL) | |
4127 | return retval; | |
4128 | ||
4129 | /* Here we know we have a symbol, so we'll execute this loop | |
4130 | at least once. */ | |
4131 | do | |
4132 | { | |
4133 | /* The second to last param, 1, says this is in a common block. */ | |
4134 | retval = verify_bind_c_sym (curr_sym, &(curr_sym->ts), 1, com_block); | |
4135 | curr_sym = curr_sym->common_next; | |
8db94b3b | 4136 | } while (curr_sym != NULL); |
c5d33754 | 4137 | |
4138 | return retval; | |
4139 | } | |
4140 | ||
4141 | ||
4142 | /* Verify that a given BIND(C) symbol is C interoperable. If it is not, | |
4143 | an appropriate error message is reported. */ | |
4144 | ||
60e19868 | 4145 | bool |
c5d33754 | 4146 | verify_bind_c_sym (gfc_symbol *tmp_sym, gfc_typespec *ts, |
4147 | int is_in_common, gfc_common_head *com_block) | |
4148 | { | |
1f2ab120 | 4149 | bool bind_c_function = false; |
60e19868 | 4150 | bool retval = true; |
4f7bb9ec | 4151 | |
1f2ab120 | 4152 | if (tmp_sym->attr.function && tmp_sym->attr.is_bind_c) |
4153 | bind_c_function = true; | |
4154 | ||
4f7bb9ec | 4155 | if (tmp_sym->attr.function && tmp_sym->result != NULL) |
4156 | { | |
4157 | tmp_sym = tmp_sym->result; | |
4158 | /* Make sure it wasn't an implicitly typed result. */ | |
bf79c656 | 4159 | if (tmp_sym->attr.implicit_type && warn_c_binding_type) |
4f7bb9ec | 4160 | { |
4166acc7 | 4161 | gfc_warning (OPT_Wc_binding_type, |
4162 | "Implicitly declared BIND(C) function %qs at " | |
4f7bb9ec | 4163 | "%L may not be C interoperable", tmp_sym->name, |
4164 | &tmp_sym->declared_at); | |
4165 | tmp_sym->ts.f90_type = tmp_sym->ts.type; | |
4166 | /* Mark it as C interoperable to prevent duplicate warnings. */ | |
4167 | tmp_sym->ts.is_c_interop = 1; | |
4168 | tmp_sym->attr.is_c_interop = 1; | |
4169 | } | |
4170 | } | |
1f2ab120 | 4171 | |
c5d33754 | 4172 | /* Here, we know we have the bind(c) attribute, so if we have |
4173 | enough type info, then verify that it's a C interop kind. | |
4174 | The info could be in the symbol already, or possibly still in | |
4175 | the given ts (current_ts), so look in both. */ | |
8db94b3b | 4176 | if (tmp_sym->ts.type != BT_UNKNOWN || ts->type != BT_UNKNOWN) |
c5d33754 | 4177 | { |
60e19868 | 4178 | if (!gfc_verify_c_interop (&(tmp_sym->ts))) |
c5d33754 | 4179 | { |
4180 | /* See if we're dealing with a sym in a common block or not. */ | |
bf79c656 | 4181 | if (is_in_common == 1 && warn_c_binding_type) |
c5d33754 | 4182 | { |
4166acc7 | 4183 | gfc_warning (OPT_Wc_binding_type, |
4184 | "Variable %qs in common block %qs at %L " | |
c5d33754 | 4185 | "may not be a C interoperable " |
4166acc7 | 4186 | "kind though common block %qs is BIND(C)", |
c5d33754 | 4187 | tmp_sym->name, com_block->name, |
4188 | &(tmp_sym->declared_at), com_block->name); | |
4189 | } | |
4190 | else | |
4191 | { | |
4192 | if (tmp_sym->ts.type == BT_DERIVED || ts->type == BT_DERIVED) | |
716da296 | 4193 | gfc_error ("Type declaration %qs at %L is not C " |
c5d33754 | 4194 | "interoperable but it is BIND(C)", |
4195 | tmp_sym->name, &(tmp_sym->declared_at)); | |
bf79c656 | 4196 | else if (warn_c_binding_type) |
4166acc7 | 4197 | gfc_warning (OPT_Wc_binding_type, "Variable %qs at %L " |
c5d33754 | 4198 | "may not be a C interoperable " |
716da296 | 4199 | "kind but it is BIND(C)", |
c5d33754 | 4200 | tmp_sym->name, &(tmp_sym->declared_at)); |
4201 | } | |
4202 | } | |
8db94b3b | 4203 | |
c5d33754 | 4204 | /* Variables declared w/in a common block can't be bind(c) |
4205 | since there's no way for C to see these variables, so there's | |
4206 | semantically no reason for the attribute. */ | |
4207 | if (is_in_common == 1 && tmp_sym->attr.is_bind_c == 1) | |
4208 | { | |
716da296 | 4209 | gfc_error ("Variable %qs in common block %qs at " |
c5d33754 | 4210 | "%L cannot be declared with BIND(C) " |
4211 | "since it is not a global", | |
4212 | tmp_sym->name, com_block->name, | |
4213 | &(tmp_sym->declared_at)); | |
60e19868 | 4214 | retval = false; |
c5d33754 | 4215 | } |
8db94b3b | 4216 | |
c5d33754 | 4217 | /* Scalar variables that are bind(c) can not have the pointer |
4218 | or allocatable attributes. */ | |
4219 | if (tmp_sym->attr.is_bind_c == 1) | |
4220 | { | |
4221 | if (tmp_sym->attr.pointer == 1) | |
4222 | { | |
716da296 | 4223 | gfc_error ("Variable %qs at %L cannot have both the " |
c5d33754 | 4224 | "POINTER and BIND(C) attributes", |
4225 | tmp_sym->name, &(tmp_sym->declared_at)); | |
60e19868 | 4226 | retval = false; |
c5d33754 | 4227 | } |
4228 | ||
4229 | if (tmp_sym->attr.allocatable == 1) | |
4230 | { | |
716da296 | 4231 | gfc_error ("Variable %qs at %L cannot have both the " |
c5d33754 | 4232 | "ALLOCATABLE and BIND(C) attributes", |
4233 | tmp_sym->name, &(tmp_sym->declared_at)); | |
60e19868 | 4234 | retval = false; |
c5d33754 | 4235 | } |
4236 | ||
1f2ab120 | 4237 | } |
4238 | ||
4239 | /* If it is a BIND(C) function, make sure the return value is a | |
4240 | scalar value. The previous tests in this function made sure | |
4241 | the type is interoperable. */ | |
4242 | if (bind_c_function && tmp_sym->as != NULL) | |
716da296 | 4243 | gfc_error ("Return type of BIND(C) function %qs at %L cannot " |
1f2ab120 | 4244 | "be an array", tmp_sym->name, &(tmp_sym->declared_at)); |
4245 | ||
4246 | /* BIND(C) functions can not return a character string. */ | |
4247 | if (bind_c_function && tmp_sym->ts.type == BT_CHARACTER) | |
eeebe20b | 4248 | if (tmp_sym->ts.u.cl == NULL || tmp_sym->ts.u.cl->length == NULL |
4249 | || tmp_sym->ts.u.cl->length->expr_type != EXPR_CONSTANT | |
4250 | || mpz_cmp_si (tmp_sym->ts.u.cl->length->value.integer, 1) != 0) | |
716da296 | 4251 | gfc_error ("Return type of BIND(C) function %qs at %L cannot " |
c5d33754 | 4252 | "be a character string", tmp_sym->name, |
4253 | &(tmp_sym->declared_at)); | |
c5d33754 | 4254 | } |
4255 | ||
4256 | /* See if the symbol has been marked as private. If it has, make sure | |
4257 | there is no binding label and warn the user if there is one. */ | |
4258 | if (tmp_sym->attr.access == ACCESS_PRIVATE | |
7b2060ba | 4259 | && tmp_sym->binding_label) |
c5d33754 | 4260 | /* Use gfc_warning_now because we won't say that the symbol fails |
4261 | just because of this. */ | |
6f521718 | 4262 | gfc_warning_now (0, "Symbol %qs at %L is marked PRIVATE but has been " |
bf79c656 | 4263 | "given the binding label %qs", tmp_sym->name, |
c5d33754 | 4264 | &(tmp_sym->declared_at), tmp_sym->binding_label); |
4265 | ||
4266 | return retval; | |
4267 | } | |
4268 | ||
4269 | ||
4270 | /* Set the appropriate fields for a symbol that's been declared as | |
4271 | BIND(C) (the is_bind_c flag and the binding label), and verify that | |
4272 | the type is C interoperable. Errors are reported by the functions | |
4273 | used to set/test these fields. */ | |
4274 | ||
60e19868 | 4275 | bool |
c5d33754 | 4276 | set_verify_bind_c_sym (gfc_symbol *tmp_sym, int num_idents) |
4277 | { | |
60e19868 | 4278 | bool retval = true; |
8db94b3b | 4279 | |
c5d33754 | 4280 | /* TODO: Do we need to make sure the vars aren't marked private? */ |
4281 | ||
4282 | /* Set the is_bind_c bit in symbol_attribute. */ | |
4283 | gfc_add_is_bind_c (&(tmp_sym->attr), tmp_sym->name, &gfc_current_locus, 0); | |
4284 | ||
60e19868 | 4285 | if (!set_binding_label (&tmp_sym->binding_label, tmp_sym->name, num_idents)) |
4286 | return false; | |
c5d33754 | 4287 | |
4288 | return retval; | |
4289 | } | |
4290 | ||
4291 | ||
4292 | /* Set the fields marking the given common block as BIND(C), including | |
4293 | a binding label, and report any errors encountered. */ | |
4294 | ||
60e19868 | 4295 | bool |
c5d33754 | 4296 | set_verify_bind_c_com_block (gfc_common_head *com_block, int num_idents) |
4297 | { | |
60e19868 | 4298 | bool retval = true; |
8db94b3b | 4299 | |
c5d33754 | 4300 | /* destLabel, common name, typespec (which may have binding label). */ |
60e19868 | 4301 | if (!set_binding_label (&com_block->binding_label, com_block->name, |
4302 | num_idents)) | |
4303 | return false; | |
c5d33754 | 4304 | |
4305 | /* Set the given common block (com_block) to being bind(c) (1). */ | |
4306 | set_com_block_bind_c (com_block, 1); | |
4307 | ||
4308 | return retval; | |
4309 | } | |
4310 | ||
4311 | ||
4312 | /* Retrieve the list of one or more identifiers that the given bind(c) | |
4313 | attribute applies to. */ | |
4314 | ||
60e19868 | 4315 | bool |
c5d33754 | 4316 | get_bind_c_idents (void) |
4317 | { | |
4318 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4319 | int num_idents = 0; | |
4320 | gfc_symbol *tmp_sym = NULL; | |
4321 | match found_id; | |
4322 | gfc_common_head *com_block = NULL; | |
8db94b3b | 4323 | |
c5d33754 | 4324 | if (gfc_match_name (name) == MATCH_YES) |
4325 | { | |
4326 | found_id = MATCH_YES; | |
4327 | gfc_get_ha_symbol (name, &tmp_sym); | |
4328 | } | |
4329 | else if (match_common_name (name) == MATCH_YES) | |
4330 | { | |
4331 | found_id = MATCH_YES; | |
4332 | com_block = gfc_get_common (name, 0); | |
4333 | } | |
4334 | else | |
4335 | { | |
4336 | gfc_error ("Need either entity or common block name for " | |
4337 | "attribute specification statement at %C"); | |
60e19868 | 4338 | return false; |
c5d33754 | 4339 | } |
8db94b3b | 4340 | |
c5d33754 | 4341 | /* Save the current identifier and look for more. */ |
4342 | do | |
4343 | { | |
4344 | /* Increment the number of identifiers found for this spec stmt. */ | |
4345 | num_idents++; | |
4346 | ||
4347 | /* Make sure we have a sym or com block, and verify that it can | |
4348 | be bind(c). Set the appropriate field(s) and look for more | |
4349 | identifiers. */ | |
8db94b3b | 4350 | if (tmp_sym != NULL || com_block != NULL) |
c5d33754 | 4351 | { |
4352 | if (tmp_sym != NULL) | |
4353 | { | |
60e19868 | 4354 | if (!set_verify_bind_c_sym (tmp_sym, num_idents)) |
4355 | return false; | |
c5d33754 | 4356 | } |
4357 | else | |
4358 | { | |
60e19868 | 4359 | if (!set_verify_bind_c_com_block (com_block, num_idents)) |
4360 | return false; | |
c5d33754 | 4361 | } |
8db94b3b | 4362 | |
c5d33754 | 4363 | /* Look to see if we have another identifier. */ |
4364 | tmp_sym = NULL; | |
4365 | if (gfc_match_eos () == MATCH_YES) | |
4366 | found_id = MATCH_NO; | |
4367 | else if (gfc_match_char (',') != MATCH_YES) | |
4368 | found_id = MATCH_NO; | |
4369 | else if (gfc_match_name (name) == MATCH_YES) | |
4370 | { | |
4371 | found_id = MATCH_YES; | |
4372 | gfc_get_ha_symbol (name, &tmp_sym); | |
4373 | } | |
4374 | else if (match_common_name (name) == MATCH_YES) | |
4375 | { | |
4376 | found_id = MATCH_YES; | |
4377 | com_block = gfc_get_common (name, 0); | |
4378 | } | |
4379 | else | |
4380 | { | |
4381 | gfc_error ("Missing entity or common block name for " | |
4382 | "attribute specification statement at %C"); | |
60e19868 | 4383 | return false; |
c5d33754 | 4384 | } |
4385 | } | |
4386 | else | |
4387 | { | |
4388 | gfc_internal_error ("Missing symbol"); | |
4389 | } | |
4390 | } while (found_id == MATCH_YES); | |
4391 | ||
4392 | /* if we get here we were successful */ | |
60e19868 | 4393 | return true; |
c5d33754 | 4394 | } |
4395 | ||
4396 | ||
4397 | /* Try and match a BIND(C) attribute specification statement. */ | |
8db94b3b | 4398 | |
c5d33754 | 4399 | match |
4400 | gfc_match_bind_c_stmt (void) | |
4401 | { | |
4402 | match found_match = MATCH_NO; | |
4403 | gfc_typespec *ts; | |
4404 | ||
4405 | ts = ¤t_ts; | |
8db94b3b | 4406 | |
c5d33754 | 4407 | /* This may not be necessary. */ |
4408 | gfc_clear_ts (ts); | |
4409 | /* Clear the temporary binding label holder. */ | |
7b2060ba | 4410 | curr_binding_label = NULL; |
c5d33754 | 4411 | |
4412 | /* Look for the bind(c). */ | |
75ae7f6c | 4413 | found_match = gfc_match_bind_c (NULL, true); |
c5d33754 | 4414 | |
4415 | if (found_match == MATCH_YES) | |
4416 | { | |
7a914593 | 4417 | if (!gfc_notify_std (GFC_STD_F2003, "BIND(C) statement at %C")) |
4418 | return MATCH_ERROR; | |
4419 | ||
c5d33754 | 4420 | /* Look for the :: now, but it is not required. */ |
4421 | gfc_match (" :: "); | |
4422 | ||
4423 | /* Get the identifier(s) that needs to be updated. This may need to | |
4424 | change to hand the flag(s) for the attr specified so all identifiers | |
4425 | found can have all appropriate parts updated (assuming that the same | |
4426 | spec stmt can have multiple attrs, such as both bind(c) and | |
4427 | allocatable...). */ | |
60e19868 | 4428 | if (!get_bind_c_idents ()) |
c5d33754 | 4429 | /* Error message should have printed already. */ |
4430 | return MATCH_ERROR; | |
4431 | } | |
4432 | ||
4433 | return found_match; | |
4434 | } | |
4435 | ||
4436 | ||
4ee9c684 | 4437 | /* Match a data declaration statement. */ |
4438 | ||
4439 | match | |
4440 | gfc_match_data_decl (void) | |
4441 | { | |
4442 | gfc_symbol *sym; | |
4443 | match m; | |
3923b69f | 4444 | int elem; |
4ee9c684 | 4445 | |
c5d33754 | 4446 | num_idents_on_line = 0; |
8db94b3b | 4447 | |
e8152f13 | 4448 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
4ee9c684 | 4449 | if (m != MATCH_YES) |
4450 | return m; | |
4451 | ||
b3704193 | 4452 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
4453 | && gfc_current_state () != COMP_DERIVED) | |
4ee9c684 | 4454 | { |
eeebe20b | 4455 | sym = gfc_use_derived (current_ts.u.derived); |
4ee9c684 | 4456 | |
4457 | if (sym == NULL) | |
4458 | { | |
4459 | m = MATCH_ERROR; | |
4460 | goto cleanup; | |
4461 | } | |
4462 | ||
eeebe20b | 4463 | current_ts.u.derived = sym; |
4ee9c684 | 4464 | } |
4465 | ||
4466 | m = match_attr_spec (); | |
4467 | if (m == MATCH_ERROR) | |
4468 | { | |
4469 | m = MATCH_NO; | |
4470 | goto cleanup; | |
4471 | } | |
4472 | ||
a90fe829 | 4473 | if (current_ts.type == BT_CLASS |
4474 | && current_ts.u.derived->attr.unlimited_polymorphic) | |
4475 | goto ok; | |
4476 | ||
b3704193 | 4477 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
4478 | && current_ts.u.derived->components == NULL | |
eeebe20b | 4479 | && !current_ts.u.derived->attr.zero_comp) |
4ee9c684 | 4480 | { |
4481 | ||
4482 | if (current_attr.pointer && gfc_current_state () == COMP_DERIVED) | |
4483 | goto ok; | |
4484 | ||
eeebe20b | 4485 | gfc_find_symbol (current_ts.u.derived->name, |
d67dd34f | 4486 | current_ts.u.derived->ns, 1, &sym); |
4ee9c684 | 4487 | |
40cf8078 | 4488 | /* Any symbol that we find had better be a type definition |
1a9745d2 | 4489 | which has its components defined. */ |
40cf8078 | 4490 | if (sym != NULL && sym->attr.flavor == FL_DERIVED |
eeebe20b | 4491 | && (current_ts.u.derived->components != NULL |
4492 | || current_ts.u.derived->attr.zero_comp)) | |
4ee9c684 | 4493 | goto ok; |
4494 | ||
a1e76cd9 | 4495 | gfc_error ("Derived type at %C has not been previously defined " |
4496 | "and so cannot appear in a derived type definition"); | |
4497 | m = MATCH_ERROR; | |
4498 | goto cleanup; | |
4ee9c684 | 4499 | } |
4500 | ||
4501 | ok: | |
4502 | /* If we have an old-style character declaration, and no new-style | |
4503 | attribute specifications, then there a comma is optional between | |
4504 | the type specification and the variable list. */ | |
4505 | if (m == MATCH_NO && current_ts.type == BT_CHARACTER && old_char_selector) | |
4506 | gfc_match_char (','); | |
4507 | ||
3923b69f | 4508 | /* Give the types/attributes to symbols that follow. Give the element |
4509 | a number so that repeat character length expressions can be copied. */ | |
4510 | elem = 1; | |
4ee9c684 | 4511 | for (;;) |
4512 | { | |
c5d33754 | 4513 | num_idents_on_line++; |
3923b69f | 4514 | m = variable_decl (elem++); |
4ee9c684 | 4515 | if (m == MATCH_ERROR) |
4516 | goto cleanup; | |
4517 | if (m == MATCH_NO) | |
4518 | break; | |
4519 | ||
4520 | if (gfc_match_eos () == MATCH_YES) | |
4521 | goto cleanup; | |
4522 | if (gfc_match_char (',') != MATCH_YES) | |
4523 | break; | |
4524 | } | |
4525 | ||
389e3a5e | 4526 | if (!gfc_error_flag_test ()) |
8f0bdb23 | 4527 | gfc_error ("Syntax error in data declaration at %C"); |
4ee9c684 | 4528 | m = MATCH_ERROR; |
4529 | ||
af29c1f0 | 4530 | gfc_free_data_all (gfc_current_ns); |
4531 | ||
4ee9c684 | 4532 | cleanup: |
4533 | gfc_free_array_spec (current_as); | |
4534 | current_as = NULL; | |
4535 | return m; | |
4536 | } | |
4537 | ||
4538 | ||
4539 | /* Match a prefix associated with a function or subroutine | |
4540 | declaration. If the typespec pointer is nonnull, then a typespec | |
4541 | can be matched. Note that if nothing matches, MATCH_YES is | |
4542 | returned (the null string was matched). */ | |
4543 | ||
077932f9 | 4544 | match |
4545 | gfc_match_prefix (gfc_typespec *ts) | |
4ee9c684 | 4546 | { |
5b11d932 | 4547 | bool seen_type; |
4e4ea00b | 4548 | bool seen_impure; |
4549 | bool found_prefix; | |
4ee9c684 | 4550 | |
4551 | gfc_clear_attr (¤t_attr); | |
4e4ea00b | 4552 | seen_type = false; |
4553 | seen_impure = false; | |
4ee9c684 | 4554 | |
d1645c7b | 4555 | gcc_assert (!gfc_matching_prefix); |
4556 | gfc_matching_prefix = true; | |
40de255b | 4557 | |
4e4ea00b | 4558 | do |
4ee9c684 | 4559 | { |
4e4ea00b | 4560 | found_prefix = false; |
4ee9c684 | 4561 | |
4e4ea00b | 4562 | if (!seen_type && ts != NULL |
4563 | && gfc_match_decl_type_spec (ts, 0) == MATCH_YES | |
4564 | && gfc_match_space () == MATCH_YES) | |
4565 | { | |
4ee9c684 | 4566 | |
4e4ea00b | 4567 | seen_type = true; |
4568 | found_prefix = true; | |
4569 | } | |
4570 | ||
4571 | if (gfc_match ("elemental% ") == MATCH_YES) | |
4572 | { | |
60e19868 | 4573 | if (!gfc_add_elemental (¤t_attr, NULL)) |
4e4ea00b | 4574 | goto error; |
4575 | ||
4576 | found_prefix = true; | |
4577 | } | |
4578 | ||
4579 | if (gfc_match ("pure% ") == MATCH_YES) | |
4580 | { | |
60e19868 | 4581 | if (!gfc_add_pure (¤t_attr, NULL)) |
4e4ea00b | 4582 | goto error; |
4583 | ||
4584 | found_prefix = true; | |
4585 | } | |
4ee9c684 | 4586 | |
4e4ea00b | 4587 | if (gfc_match ("recursive% ") == MATCH_YES) |
4588 | { | |
60e19868 | 4589 | if (!gfc_add_recursive (¤t_attr, NULL)) |
4e4ea00b | 4590 | goto error; |
4591 | ||
4592 | found_prefix = true; | |
4593 | } | |
4594 | ||
4595 | /* IMPURE is a somewhat special case, as it needs not set an actual | |
4596 | attribute but rather only prevents ELEMENTAL routines from being | |
4597 | automatically PURE. */ | |
4598 | if (gfc_match ("impure% ") == MATCH_YES) | |
4599 | { | |
60e19868 | 4600 | if (!gfc_notify_std (GFC_STD_F2008, "IMPURE procedure at %C")) |
4e4ea00b | 4601 | goto error; |
4602 | ||
4603 | seen_impure = true; | |
4604 | found_prefix = true; | |
4605 | } | |
4ee9c684 | 4606 | } |
4e4ea00b | 4607 | while (found_prefix); |
4ee9c684 | 4608 | |
4e4ea00b | 4609 | /* IMPURE and PURE must not both appear, of course. */ |
4610 | if (seen_impure && current_attr.pure) | |
4ee9c684 | 4611 | { |
4e4ea00b | 4612 | gfc_error ("PURE and IMPURE must not appear both at %C"); |
4613 | goto error; | |
4ee9c684 | 4614 | } |
4615 | ||
4e4ea00b | 4616 | /* If IMPURE it not seen but the procedure is ELEMENTAL, mark it as PURE. */ |
4617 | if (!seen_impure && current_attr.elemental && !current_attr.pure) | |
4ee9c684 | 4618 | { |
60e19868 | 4619 | if (!gfc_add_pure (¤t_attr, NULL)) |
40de255b | 4620 | goto error; |
4ee9c684 | 4621 | } |
4622 | ||
4623 | /* At this point, the next item is not a prefix. */ | |
d1645c7b | 4624 | gcc_assert (gfc_matching_prefix); |
4b8eb6ca | 4625 | |
4626 | /* MODULE should be the last prefix before FUNCTION or SUBROUTINE. | |
4627 | Since this is a prefix like PURE, ELEMENTAL, etc., having a | |
4628 | corresponding attribute seems natural and distinguishes these | |
4629 | procedures from procedure types of PROC_MODULE, which these are | |
4630 | as well. */ | |
4631 | if ((gfc_current_state () == COMP_INTERFACE | |
4632 | || gfc_current_state () == COMP_CONTAINS) | |
4633 | && gfc_match ("module% ") == MATCH_YES) | |
4634 | { | |
4635 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE prefix at %C")) | |
4636 | goto error; | |
4637 | else | |
4638 | current_attr.module_procedure = 1; | |
4639 | } | |
4640 | ||
d1645c7b | 4641 | gfc_matching_prefix = false; |
4ee9c684 | 4642 | return MATCH_YES; |
40de255b | 4643 | |
4644 | error: | |
d1645c7b | 4645 | gcc_assert (gfc_matching_prefix); |
4646 | gfc_matching_prefix = false; | |
40de255b | 4647 | return MATCH_ERROR; |
4ee9c684 | 4648 | } |
4649 | ||
4650 | ||
077932f9 | 4651 | /* Copy attributes matched by gfc_match_prefix() to attributes on a symbol. */ |
4ee9c684 | 4652 | |
60e19868 | 4653 | static bool |
1a9745d2 | 4654 | copy_prefix (symbol_attribute *dest, locus *where) |
4ee9c684 | 4655 | { |
60e19868 | 4656 | if (current_attr.pure && !gfc_add_pure (dest, where)) |
4657 | return false; | |
4ee9c684 | 4658 | |
60e19868 | 4659 | if (current_attr.elemental && !gfc_add_elemental (dest, where)) |
4660 | return false; | |
4ee9c684 | 4661 | |
60e19868 | 4662 | if (current_attr.recursive && !gfc_add_recursive (dest, where)) |
4663 | return false; | |
4ee9c684 | 4664 | |
60e19868 | 4665 | return true; |
4ee9c684 | 4666 | } |
4667 | ||
4668 | ||
4669 | /* Match a formal argument list. */ | |
4670 | ||
4671 | match | |
1a9745d2 | 4672 | gfc_match_formal_arglist (gfc_symbol *progname, int st_flag, int null_flag) |
4ee9c684 | 4673 | { |
4674 | gfc_formal_arglist *head, *tail, *p, *q; | |
4675 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4676 | gfc_symbol *sym; | |
4677 | match m; | |
4b8eb6ca | 4678 | gfc_formal_arglist *formal = NULL; |
4ee9c684 | 4679 | |
4680 | head = tail = NULL; | |
4681 | ||
4b8eb6ca | 4682 | /* Keep the interface formal argument list and null it so that the |
4683 | matching for the new declaration can be done. The numbers and | |
4684 | names of the arguments are checked here. The interface formal | |
4685 | arguments are retained in formal_arglist and the characteristics | |
4686 | are compared in resolve.c(resolve_fl_procedure). See the remark | |
4687 | in get_proc_name about the eventual need to copy the formal_arglist | |
4688 | and populate the formal namespace of the interface symbol. */ | |
4689 | if (progname->attr.module_procedure | |
4690 | && progname->attr.host_assoc) | |
4691 | { | |
4692 | formal = progname->formal; | |
4693 | progname->formal = NULL; | |
4694 | } | |
4695 | ||
4ee9c684 | 4696 | if (gfc_match_char ('(') != MATCH_YES) |
4697 | { | |
4698 | if (null_flag) | |
4699 | goto ok; | |
4700 | return MATCH_NO; | |
4701 | } | |
4702 | ||
4703 | if (gfc_match_char (')') == MATCH_YES) | |
4704 | goto ok; | |
4705 | ||
4706 | for (;;) | |
4707 | { | |
4708 | if (gfc_match_char ('*') == MATCH_YES) | |
a5d831e5 | 4709 | { |
4710 | sym = NULL; | |
60e19868 | 4711 | if (!gfc_notify_std (GFC_STD_F95_OBS, "Alternate-return argument " |
4712 | "at %C")) | |
a5d831e5 | 4713 | { |
4714 | m = MATCH_ERROR; | |
4715 | goto cleanup; | |
4716 | } | |
4717 | } | |
4ee9c684 | 4718 | else |
4719 | { | |
4720 | m = gfc_match_name (name); | |
4721 | if (m != MATCH_YES) | |
4722 | goto cleanup; | |
4723 | ||
4724 | if (gfc_get_symbol (name, NULL, &sym)) | |
4725 | goto cleanup; | |
4726 | } | |
4727 | ||
4728 | p = gfc_get_formal_arglist (); | |
4729 | ||
4730 | if (head == NULL) | |
4731 | head = tail = p; | |
4732 | else | |
4733 | { | |
4734 | tail->next = p; | |
4735 | tail = p; | |
4736 | } | |
4737 | ||
4738 | tail->sym = sym; | |
4739 | ||
4740 | /* We don't add the VARIABLE flavor because the name could be a | |
1a9745d2 | 4741 | dummy procedure. We don't apply these attributes to formal |
4742 | arguments of statement functions. */ | |
4ee9c684 | 4743 | if (sym != NULL && !st_flag |
60e19868 | 4744 | && (!gfc_add_dummy(&sym->attr, sym->name, NULL) |
4745 | || !gfc_missing_attr (&sym->attr, NULL))) | |
4ee9c684 | 4746 | { |
4747 | m = MATCH_ERROR; | |
4748 | goto cleanup; | |
4749 | } | |
4750 | ||
4751 | /* The name of a program unit can be in a different namespace, | |
1a9745d2 | 4752 | so check for it explicitly. After the statement is accepted, |
4753 | the name is checked for especially in gfc_get_symbol(). */ | |
4ee9c684 | 4754 | if (gfc_new_block != NULL && sym != NULL |
4755 | && strcmp (sym->name, gfc_new_block->name) == 0) | |
4756 | { | |
716da296 | 4757 | gfc_error ("Name %qs at %C is the name of the procedure", |
4ee9c684 | 4758 | sym->name); |
4759 | m = MATCH_ERROR; | |
4760 | goto cleanup; | |
4761 | } | |
4762 | ||
4763 | if (gfc_match_char (')') == MATCH_YES) | |
4764 | goto ok; | |
4765 | ||
4766 | m = gfc_match_char (','); | |
4767 | if (m != MATCH_YES) | |
4768 | { | |
4769 | gfc_error ("Unexpected junk in formal argument list at %C"); | |
4770 | goto cleanup; | |
4771 | } | |
4772 | } | |
4773 | ||
4774 | ok: | |
4775 | /* Check for duplicate symbols in the formal argument list. */ | |
4776 | if (head != NULL) | |
4777 | { | |
4778 | for (p = head; p->next; p = p->next) | |
4779 | { | |
4780 | if (p->sym == NULL) | |
4781 | continue; | |
4782 | ||
4783 | for (q = p->next; q; q = q->next) | |
4784 | if (p->sym == q->sym) | |
4785 | { | |
716da296 | 4786 | gfc_error ("Duplicate symbol %qs in formal argument list " |
1a9745d2 | 4787 | "at %C", p->sym->name); |
4ee9c684 | 4788 | |
4789 | m = MATCH_ERROR; | |
4790 | goto cleanup; | |
4791 | } | |
4792 | } | |
4793 | } | |
4794 | ||
60e19868 | 4795 | if (!gfc_add_explicit_interface (progname, IFSRC_DECL, head, NULL)) |
4ee9c684 | 4796 | { |
4797 | m = MATCH_ERROR; | |
4798 | goto cleanup; | |
4799 | } | |
4800 | ||
4b8eb6ca | 4801 | if (formal) |
4802 | { | |
4803 | for (p = formal, q = head; p && q; p = p->next, q = q->next) | |
4804 | { | |
4805 | if ((p->next != NULL && q->next == NULL) | |
4806 | || (p->next == NULL && q->next != NULL)) | |
4807 | gfc_error_now ("Mismatch in number of MODULE PROCEDURE " | |
4808 | "formal arguments at %C"); | |
4809 | else if ((p->sym == NULL && q->sym == NULL) | |
4810 | || strcmp (p->sym->name, q->sym->name) == 0) | |
4811 | continue; | |
4812 | else | |
4813 | gfc_error_now ("Mismatch in MODULE PROCEDURE formal " | |
4814 | "argument names (%s/%s) at %C", | |
4815 | p->sym->name, q->sym->name); | |
4816 | } | |
4817 | } | |
4818 | ||
4ee9c684 | 4819 | return MATCH_YES; |
4820 | ||
4821 | cleanup: | |
4822 | gfc_free_formal_arglist (head); | |
4823 | return m; | |
4824 | } | |
4825 | ||
4826 | ||
4827 | /* Match a RESULT specification following a function declaration or | |
4828 | ENTRY statement. Also matches the end-of-statement. */ | |
4829 | ||
4830 | static match | |
f6d0e37a | 4831 | match_result (gfc_symbol *function, gfc_symbol **result) |
4ee9c684 | 4832 | { |
4833 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4834 | gfc_symbol *r; | |
4835 | match m; | |
4836 | ||
4837 | if (gfc_match (" result (") != MATCH_YES) | |
4838 | return MATCH_NO; | |
4839 | ||
4840 | m = gfc_match_name (name); | |
4841 | if (m != MATCH_YES) | |
4842 | return m; | |
4843 | ||
c5d33754 | 4844 | /* Get the right paren, and that's it because there could be the |
4845 | bind(c) attribute after the result clause. */ | |
60e19868 | 4846 | if (gfc_match_char (')') != MATCH_YES) |
4ee9c684 | 4847 | { |
c5d33754 | 4848 | /* TODO: should report the missing right paren here. */ |
4ee9c684 | 4849 | return MATCH_ERROR; |
4850 | } | |
4851 | ||
4852 | if (strcmp (function->name, name) == 0) | |
4853 | { | |
1a9745d2 | 4854 | gfc_error ("RESULT variable at %C must be different than function name"); |
4ee9c684 | 4855 | return MATCH_ERROR; |
4856 | } | |
4857 | ||
4858 | if (gfc_get_symbol (name, NULL, &r)) | |
4859 | return MATCH_ERROR; | |
4860 | ||
60e19868 | 4861 | if (!gfc_add_result (&r->attr, r->name, NULL)) |
4ee9c684 | 4862 | return MATCH_ERROR; |
4863 | ||
4864 | *result = r; | |
4865 | ||
4866 | return MATCH_YES; | |
4867 | } | |
4868 | ||
4869 | ||
c5d33754 | 4870 | /* Match a function suffix, which could be a combination of a result |
4871 | clause and BIND(C), either one, or neither. The draft does not | |
4872 | require them to come in a specific order. */ | |
4873 | ||
4874 | match | |
4875 | gfc_match_suffix (gfc_symbol *sym, gfc_symbol **result) | |
4876 | { | |
4877 | match is_bind_c; /* Found bind(c). */ | |
4878 | match is_result; /* Found result clause. */ | |
4879 | match found_match; /* Status of whether we've found a good match. */ | |
e0be6f02 | 4880 | char peek_char; /* Character we're going to peek at. */ |
75ae7f6c | 4881 | bool allow_binding_name; |
c5d33754 | 4882 | |
4883 | /* Initialize to having found nothing. */ | |
4884 | found_match = MATCH_NO; | |
8db94b3b | 4885 | is_bind_c = MATCH_NO; |
c5d33754 | 4886 | is_result = MATCH_NO; |
4887 | ||
4888 | /* Get the next char to narrow between result and bind(c). */ | |
4889 | gfc_gobble_whitespace (); | |
e0be6f02 | 4890 | peek_char = gfc_peek_ascii_char (); |
c5d33754 | 4891 | |
75ae7f6c | 4892 | /* C binding names are not allowed for internal procedures. */ |
4893 | if (gfc_current_state () == COMP_CONTAINS | |
4894 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
4895 | allow_binding_name = false; | |
4896 | else | |
4897 | allow_binding_name = true; | |
4898 | ||
c5d33754 | 4899 | switch (peek_char) |
4900 | { | |
4901 | case 'r': | |
4902 | /* Look for result clause. */ | |
4903 | is_result = match_result (sym, result); | |
4904 | if (is_result == MATCH_YES) | |
4905 | { | |
4906 | /* Now see if there is a bind(c) after it. */ | |
75ae7f6c | 4907 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
c5d33754 | 4908 | /* We've found the result clause and possibly bind(c). */ |
4909 | found_match = MATCH_YES; | |
4910 | } | |
4911 | else | |
4912 | /* This should only be MATCH_ERROR. */ | |
8db94b3b | 4913 | found_match = is_result; |
c5d33754 | 4914 | break; |
4915 | case 'b': | |
4916 | /* Look for bind(c) first. */ | |
75ae7f6c | 4917 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
c5d33754 | 4918 | if (is_bind_c == MATCH_YES) |
4919 | { | |
4920 | /* Now see if a result clause followed it. */ | |
4921 | is_result = match_result (sym, result); | |
4922 | found_match = MATCH_YES; | |
4923 | } | |
4924 | else | |
4925 | { | |
4926 | /* Should only be a MATCH_ERROR if we get here after seeing 'b'. */ | |
4927 | found_match = MATCH_ERROR; | |
4928 | } | |
4929 | break; | |
4930 | default: | |
4931 | gfc_error ("Unexpected junk after function declaration at %C"); | |
4932 | found_match = MATCH_ERROR; | |
4933 | break; | |
4934 | } | |
4935 | ||
c5d33754 | 4936 | if (is_bind_c == MATCH_YES) |
4518e961 | 4937 | { |
75ae7f6c | 4938 | /* Fortran 2008 draft allows BIND(C) for internal procedures. */ |
4518e961 | 4939 | if (gfc_current_state () == COMP_CONTAINS |
75ae7f6c | 4940 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
60e19868 | 4941 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
4942 | "at %L may not be specified for an internal " | |
4943 | "procedure", &gfc_current_locus)) | |
75ae7f6c | 4944 | return MATCH_ERROR; |
4945 | ||
60e19868 | 4946 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, &gfc_current_locus, 1)) |
4518e961 | 4947 | return MATCH_ERROR; |
4948 | } | |
8db94b3b | 4949 | |
c5d33754 | 4950 | return found_match; |
4951 | } | |
4952 | ||
4953 | ||
1e057e9b | 4954 | /* Procedure pointer return value without RESULT statement: |
4955 | Add "hidden" result variable named "ppr@". */ | |
4956 | ||
60e19868 | 4957 | static bool |
1e057e9b | 4958 | add_hidden_procptr_result (gfc_symbol *sym) |
4959 | { | |
4960 | bool case1,case2; | |
4961 | ||
4962 | if (gfc_notification_std (GFC_STD_F2003) == ERROR) | |
60e19868 | 4963 | return false; |
1e057e9b | 4964 | |
4965 | /* First usage case: PROCEDURE and EXTERNAL statements. */ | |
4966 | case1 = gfc_current_state () == COMP_FUNCTION && gfc_current_block () | |
4967 | && strcmp (gfc_current_block ()->name, sym->name) == 0 | |
4968 | && sym->attr.external; | |
4969 | /* Second usage case: INTERFACE statements. */ | |
4970 | case2 = gfc_current_state () == COMP_INTERFACE && gfc_state_stack->previous | |
4971 | && gfc_state_stack->previous->state == COMP_FUNCTION | |
4972 | && strcmp (gfc_state_stack->previous->sym->name, sym->name) == 0; | |
4973 | ||
4974 | if (case1 || case2) | |
4975 | { | |
4976 | gfc_symtree *stree; | |
4977 | if (case1) | |
36b0a1b0 | 4978 | gfc_get_sym_tree ("ppr@", gfc_current_ns, &stree, false); |
1e057e9b | 4979 | else if (case2) |
180a5dc0 | 4980 | { |
4981 | gfc_symtree *st2; | |
36b0a1b0 | 4982 | gfc_get_sym_tree ("ppr@", gfc_current_ns->parent, &stree, false); |
180a5dc0 | 4983 | st2 = gfc_new_symtree (&gfc_current_ns->sym_root, "ppr@"); |
4984 | st2->n.sym = stree->n.sym; | |
4985 | } | |
1e057e9b | 4986 | sym->result = stree->n.sym; |
4987 | ||
4988 | sym->result->attr.proc_pointer = sym->attr.proc_pointer; | |
4989 | sym->result->attr.pointer = sym->attr.pointer; | |
4990 | sym->result->attr.external = sym->attr.external; | |
4991 | sym->result->attr.referenced = sym->attr.referenced; | |
e40ac2fe | 4992 | sym->result->ts = sym->ts; |
1e057e9b | 4993 | sym->attr.proc_pointer = 0; |
4994 | sym->attr.pointer = 0; | |
4995 | sym->attr.external = 0; | |
4996 | if (sym->result->attr.external && sym->result->attr.pointer) | |
4997 | { | |
4998 | sym->result->attr.pointer = 0; | |
4999 | sym->result->attr.proc_pointer = 1; | |
5000 | } | |
5001 | ||
5002 | return gfc_add_result (&sym->result->attr, sym->result->name, NULL); | |
5003 | } | |
5004 | /* POINTER after PROCEDURE/EXTERNAL/INTERFACE statement. */ | |
5005 | else if (sym->attr.function && !sym->attr.external && sym->attr.pointer | |
5006 | && sym->result && sym->result != sym && sym->result->attr.external | |
5007 | && sym == gfc_current_ns->proc_name | |
5008 | && sym == sym->result->ns->proc_name | |
5009 | && strcmp ("ppr@", sym->result->name) == 0) | |
5010 | { | |
5011 | sym->result->attr.proc_pointer = 1; | |
5012 | sym->attr.pointer = 0; | |
60e19868 | 5013 | return true; |
1e057e9b | 5014 | } |
5015 | else | |
60e19868 | 5016 | return false; |
1e057e9b | 5017 | } |
5018 | ||
5019 | ||
64e93293 | 5020 | /* Match the interface for a PROCEDURE declaration, |
5021 | including brackets (R1212). */ | |
af1a34ee | 5022 | |
5023 | static match | |
64e93293 | 5024 | match_procedure_interface (gfc_symbol **proc_if) |
af1a34ee | 5025 | { |
5026 | match m; | |
1eb2b542 | 5027 | gfc_symtree *st; |
af1a34ee | 5028 | locus old_loc, entry_loc; |
1eb2b542 | 5029 | gfc_namespace *old_ns = gfc_current_ns; |
5030 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
af1a34ee | 5031 | |
1eb2b542 | 5032 | old_loc = entry_loc = gfc_current_locus; |
af1a34ee | 5033 | gfc_clear_ts (¤t_ts); |
5034 | ||
5035 | if (gfc_match (" (") != MATCH_YES) | |
5036 | { | |
5037 | gfc_current_locus = entry_loc; | |
5038 | return MATCH_NO; | |
5039 | } | |
5040 | ||
5041 | /* Get the type spec. for the procedure interface. */ | |
5042 | old_loc = gfc_current_locus; | |
e8152f13 | 5043 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
fd1277c3 | 5044 | gfc_gobble_whitespace (); |
e0be6f02 | 5045 | if (m == MATCH_YES || (m == MATCH_NO && gfc_peek_ascii_char () == ')')) |
af1a34ee | 5046 | goto got_ts; |
5047 | ||
5048 | if (m == MATCH_ERROR) | |
5049 | return m; | |
5050 | ||
1eb2b542 | 5051 | /* Procedure interface is itself a procedure. */ |
af1a34ee | 5052 | gfc_current_locus = old_loc; |
1eb2b542 | 5053 | m = gfc_match_name (name); |
af1a34ee | 5054 | |
1eb2b542 | 5055 | /* First look to see if it is already accessible in the current |
5056 | namespace because it is use associated or contained. */ | |
5057 | st = NULL; | |
5058 | if (gfc_find_sym_tree (name, NULL, 0, &st)) | |
5059 | return MATCH_ERROR; | |
5060 | ||
5061 | /* If it is still not found, then try the parent namespace, if it | |
5062 | exists and create the symbol there if it is still not found. */ | |
5063 | if (gfc_current_ns->parent) | |
5064 | gfc_current_ns = gfc_current_ns->parent; | |
5065 | if (st == NULL && gfc_get_ha_sym_tree (name, &st)) | |
5066 | return MATCH_ERROR; | |
5067 | ||
5068 | gfc_current_ns = old_ns; | |
5069 | *proc_if = st->n.sym; | |
af1a34ee | 5070 | |
64e93293 | 5071 | if (*proc_if) |
af1a34ee | 5072 | { |
64e93293 | 5073 | (*proc_if)->refs++; |
74113644 | 5074 | /* Resolve interface if possible. That way, attr.procedure is only set |
5075 | if it is declared by a later procedure-declaration-stmt, which is | |
87863b31 | 5076 | invalid per F08:C1216 (cf. resolve_procedure_interface). */ |
64e93293 | 5077 | while ((*proc_if)->ts.interface) |
5078 | *proc_if = (*proc_if)->ts.interface; | |
74113644 | 5079 | |
87863b31 | 5080 | if ((*proc_if)->attr.flavor == FL_UNKNOWN |
5081 | && (*proc_if)->ts.type == BT_UNKNOWN | |
60e19868 | 5082 | && !gfc_add_flavor (&(*proc_if)->attr, FL_PROCEDURE, |
5083 | (*proc_if)->name, NULL)) | |
87863b31 | 5084 | return MATCH_ERROR; |
af1a34ee | 5085 | } |
5086 | ||
5087 | got_ts: | |
af1a34ee | 5088 | if (gfc_match (" )") != MATCH_YES) |
5089 | { | |
5090 | gfc_current_locus = entry_loc; | |
5091 | return MATCH_NO; | |
5092 | } | |
5093 | ||
64e93293 | 5094 | return MATCH_YES; |
5095 | } | |
5096 | ||
5097 | ||
5098 | /* Match a PROCEDURE declaration (R1211). */ | |
5099 | ||
5100 | static match | |
5101 | match_procedure_decl (void) | |
5102 | { | |
5103 | match m; | |
5104 | gfc_symbol *sym, *proc_if = NULL; | |
5105 | int num; | |
5106 | gfc_expr *initializer = NULL; | |
5107 | ||
293d72e0 | 5108 | /* Parse interface (with brackets). */ |
64e93293 | 5109 | m = match_procedure_interface (&proc_if); |
5110 | if (m != MATCH_YES) | |
5111 | return m; | |
5112 | ||
5113 | /* Parse attributes (with colons). */ | |
af1a34ee | 5114 | m = match_attr_spec(); |
5115 | if (m == MATCH_ERROR) | |
5116 | return MATCH_ERROR; | |
5117 | ||
caa3ea40 | 5118 | if (proc_if && proc_if->attr.is_bind_c && !current_attr.is_bind_c) |
5119 | { | |
5120 | current_attr.is_bind_c = 1; | |
5121 | has_name_equals = 0; | |
5122 | curr_binding_label = NULL; | |
5123 | } | |
5124 | ||
af1a34ee | 5125 | /* Get procedure symbols. */ |
5126 | for(num=1;;num++) | |
5127 | { | |
af1a34ee | 5128 | m = gfc_match_symbol (&sym, 0); |
5129 | if (m == MATCH_NO) | |
5130 | goto syntax; | |
5131 | else if (m == MATCH_ERROR) | |
5132 | return m; | |
5133 | ||
5134 | /* Add current_attr to the symbol attributes. */ | |
60e19868 | 5135 | if (!gfc_copy_attr (&sym->attr, ¤t_attr, NULL)) |
af1a34ee | 5136 | return MATCH_ERROR; |
5137 | ||
5138 | if (sym->attr.is_bind_c) | |
5139 | { | |
5140 | /* Check for C1218. */ | |
5141 | if (!proc_if || !proc_if->attr.is_bind_c) | |
5142 | { | |
5143 | gfc_error ("BIND(C) attribute at %C requires " | |
5144 | "an interface with BIND(C)"); | |
5145 | return MATCH_ERROR; | |
5146 | } | |
5147 | /* Check for C1217. */ | |
5148 | if (has_name_equals && sym->attr.pointer) | |
5149 | { | |
5150 | gfc_error ("BIND(C) procedure with NAME may not have " | |
5151 | "POINTER attribute at %C"); | |
5152 | return MATCH_ERROR; | |
5153 | } | |
5154 | if (has_name_equals && sym->attr.dummy) | |
5155 | { | |
5156 | gfc_error ("Dummy procedure at %C may not have " | |
5157 | "BIND(C) attribute with NAME"); | |
5158 | return MATCH_ERROR; | |
5159 | } | |
5160 | /* Set binding label for BIND(C). */ | |
60e19868 | 5161 | if (!set_binding_label (&sym->binding_label, sym->name, num)) |
af1a34ee | 5162 | return MATCH_ERROR; |
5163 | } | |
5164 | ||
60e19868 | 5165 | if (!gfc_add_external (&sym->attr, NULL)) |
af1a34ee | 5166 | return MATCH_ERROR; |
1e057e9b | 5167 | |
60e19868 | 5168 | if (add_hidden_procptr_result (sym)) |
1e057e9b | 5169 | sym = sym->result; |
5170 | ||
60e19868 | 5171 | if (!gfc_add_proc (&sym->attr, sym->name, NULL)) |
af1a34ee | 5172 | return MATCH_ERROR; |
5173 | ||
5174 | /* Set interface. */ | |
5175 | if (proc_if != NULL) | |
f7d7a083 | 5176 | { |
13a834aa | 5177 | if (sym->ts.type != BT_UNKNOWN) |
5178 | { | |
716da296 | 5179 | gfc_error ("Procedure %qs at %L already has basic type of %s", |
13a834aa | 5180 | sym->name, &gfc_current_locus, |
5181 | gfc_basic_typename (sym->ts.type)); | |
5182 | return MATCH_ERROR; | |
5183 | } | |
2cd2bb5c | 5184 | sym->ts.interface = proc_if; |
f7d7a083 | 5185 | sym->attr.untyped = 1; |
180a5dc0 | 5186 | sym->attr.if_source = IFSRC_IFBODY; |
f7d7a083 | 5187 | } |
af1a34ee | 5188 | else if (current_ts.type != BT_UNKNOWN) |
5189 | { | |
60e19868 | 5190 | if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
13a834aa | 5191 | return MATCH_ERROR; |
2cd2bb5c | 5192 | sym->ts.interface = gfc_new_symbol ("", gfc_current_ns); |
5193 | sym->ts.interface->ts = current_ts; | |
ce80bc5b | 5194 | sym->ts.interface->attr.flavor = FL_PROCEDURE; |
2cd2bb5c | 5195 | sym->ts.interface->attr.function = 1; |
ce80bc5b | 5196 | sym->attr.function = 1; |
180a5dc0 | 5197 | sym->attr.if_source = IFSRC_UNKNOWN; |
af1a34ee | 5198 | } |
5199 | ||
cad0ddcf | 5200 | if (gfc_match (" =>") == MATCH_YES) |
5201 | { | |
5202 | if (!current_attr.pointer) | |
5203 | { | |
5204 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
5205 | m = MATCH_ERROR; | |
5206 | goto cleanup; | |
5207 | } | |
5208 | ||
23d075f4 | 5209 | m = match_pointer_init (&initializer, 1); |
cad0ddcf | 5210 | if (m != MATCH_YES) |
5211 | goto cleanup; | |
5212 | ||
60e19868 | 5213 | if (!add_init_expr_to_sym (sym->name, &initializer, &gfc_current_locus)) |
cad0ddcf | 5214 | goto cleanup; |
5215 | ||
5216 | } | |
5217 | ||
af1a34ee | 5218 | if (gfc_match_eos () == MATCH_YES) |
5219 | return MATCH_YES; | |
5220 | if (gfc_match_char (',') != MATCH_YES) | |
5221 | goto syntax; | |
5222 | } | |
5223 | ||
5224 | syntax: | |
5225 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
5226 | return MATCH_ERROR; | |
cad0ddcf | 5227 | |
5228 | cleanup: | |
5229 | /* Free stuff up and return. */ | |
5230 | gfc_free_expr (initializer); | |
5231 | return m; | |
af1a34ee | 5232 | } |
5233 | ||
5234 | ||
64e93293 | 5235 | static match |
5236 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc); | |
5237 | ||
5238 | ||
5239 | /* Match a procedure pointer component declaration (R445). */ | |
5240 | ||
5241 | static match | |
5242 | match_ppc_decl (void) | |
5243 | { | |
5244 | match m; | |
5245 | gfc_symbol *proc_if = NULL; | |
5246 | gfc_typespec ts; | |
5247 | int num; | |
5248 | gfc_component *c; | |
5249 | gfc_expr *initializer = NULL; | |
5250 | gfc_typebound_proc* tb; | |
5251 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5252 | ||
5253 | /* Parse interface (with brackets). */ | |
5254 | m = match_procedure_interface (&proc_if); | |
5255 | if (m != MATCH_YES) | |
5256 | goto syntax; | |
5257 | ||
5258 | /* Parse attributes. */ | |
5259 | tb = XCNEW (gfc_typebound_proc); | |
5260 | tb->where = gfc_current_locus; | |
5261 | m = match_binding_attributes (tb, false, true); | |
5262 | if (m == MATCH_ERROR) | |
5263 | return m; | |
5264 | ||
64e93293 | 5265 | gfc_clear_attr (¤t_attr); |
5266 | current_attr.procedure = 1; | |
5267 | current_attr.proc_pointer = 1; | |
5268 | current_attr.access = tb->access; | |
5269 | current_attr.flavor = FL_PROCEDURE; | |
5270 | ||
5271 | /* Match the colons (required). */ | |
5272 | if (gfc_match (" ::") != MATCH_YES) | |
5273 | { | |
0d2b3c9c | 5274 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
64e93293 | 5275 | return MATCH_ERROR; |
5276 | } | |
5277 | ||
5278 | /* Check for C450. */ | |
5279 | if (!tb->nopass && proc_if == NULL) | |
5280 | { | |
5281 | gfc_error("NOPASS or explicit interface required at %C"); | |
5282 | return MATCH_ERROR; | |
5283 | } | |
5284 | ||
60e19868 | 5285 | if (!gfc_notify_std (GFC_STD_F2003, "Procedure pointer component at %C")) |
8a026279 | 5286 | return MATCH_ERROR; |
5287 | ||
64e93293 | 5288 | /* Match PPC names. */ |
5289 | ts = current_ts; | |
5290 | for(num=1;;num++) | |
5291 | { | |
5292 | m = gfc_match_name (name); | |
5293 | if (m == MATCH_NO) | |
5294 | goto syntax; | |
5295 | else if (m == MATCH_ERROR) | |
5296 | return m; | |
5297 | ||
60e19868 | 5298 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
64e93293 | 5299 | return MATCH_ERROR; |
5300 | ||
5301 | /* Add current_attr to the symbol attributes. */ | |
60e19868 | 5302 | if (!gfc_copy_attr (&c->attr, ¤t_attr, NULL)) |
64e93293 | 5303 | return MATCH_ERROR; |
5304 | ||
60e19868 | 5305 | if (!gfc_add_external (&c->attr, NULL)) |
64e93293 | 5306 | return MATCH_ERROR; |
5307 | ||
60e19868 | 5308 | if (!gfc_add_proc (&c->attr, name, NULL)) |
64e93293 | 5309 | return MATCH_ERROR; |
5310 | ||
99014f81 | 5311 | if (num == 1) |
5312 | c->tb = tb; | |
5313 | else | |
5314 | { | |
5315 | c->tb = XCNEW (gfc_typebound_proc); | |
5316 | c->tb->where = gfc_current_locus; | |
5317 | *c->tb = *tb; | |
5318 | } | |
fe9b08a2 | 5319 | |
64e93293 | 5320 | /* Set interface. */ |
5321 | if (proc_if != NULL) | |
5322 | { | |
5323 | c->ts.interface = proc_if; | |
5324 | c->attr.untyped = 1; | |
5325 | c->attr.if_source = IFSRC_IFBODY; | |
5326 | } | |
5327 | else if (ts.type != BT_UNKNOWN) | |
5328 | { | |
5329 | c->ts = ts; | |
5330 | c->ts.interface = gfc_new_symbol ("", gfc_current_ns); | |
a63bcd97 | 5331 | c->ts.interface->result = c->ts.interface; |
64e93293 | 5332 | c->ts.interface->ts = ts; |
ce80bc5b | 5333 | c->ts.interface->attr.flavor = FL_PROCEDURE; |
64e93293 | 5334 | c->ts.interface->attr.function = 1; |
ce80bc5b | 5335 | c->attr.function = 1; |
64e93293 | 5336 | c->attr.if_source = IFSRC_UNKNOWN; |
5337 | } | |
5338 | ||
5339 | if (gfc_match (" =>") == MATCH_YES) | |
5340 | { | |
23d075f4 | 5341 | m = match_pointer_init (&initializer, 1); |
64e93293 | 5342 | if (m != MATCH_YES) |
5343 | { | |
5344 | gfc_free_expr (initializer); | |
5345 | return m; | |
5346 | } | |
5347 | c->initializer = initializer; | |
5348 | } | |
5349 | ||
5350 | if (gfc_match_eos () == MATCH_YES) | |
5351 | return MATCH_YES; | |
5352 | if (gfc_match_char (',') != MATCH_YES) | |
5353 | goto syntax; | |
5354 | } | |
5355 | ||
5356 | syntax: | |
5357 | gfc_error ("Syntax error in procedure pointer component at %C"); | |
5358 | return MATCH_ERROR; | |
5359 | } | |
5360 | ||
5361 | ||
af1a34ee | 5362 | /* Match a PROCEDURE declaration inside an interface (R1206). */ |
5363 | ||
5364 | static match | |
5365 | match_procedure_in_interface (void) | |
5366 | { | |
5367 | match m; | |
5368 | gfc_symbol *sym; | |
5369 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
2b0f5dc8 | 5370 | locus old_locus; |
af1a34ee | 5371 | |
5372 | if (current_interface.type == INTERFACE_NAMELESS | |
5373 | || current_interface.type == INTERFACE_ABSTRACT) | |
5374 | { | |
5375 | gfc_error ("PROCEDURE at %C must be in a generic interface"); | |
5376 | return MATCH_ERROR; | |
5377 | } | |
5378 | ||
2b0f5dc8 | 5379 | /* Check if the F2008 optional double colon appears. */ |
5380 | gfc_gobble_whitespace (); | |
5381 | old_locus = gfc_current_locus; | |
5382 | if (gfc_match ("::") == MATCH_YES) | |
5383 | { | |
60e19868 | 5384 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
5385 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
2b0f5dc8 | 5386 | return MATCH_ERROR; |
5387 | } | |
5388 | else | |
5389 | gfc_current_locus = old_locus; | |
5390 | ||
af1a34ee | 5391 | for(;;) |
5392 | { | |
5393 | m = gfc_match_name (name); | |
5394 | if (m == MATCH_NO) | |
5395 | goto syntax; | |
5396 | else if (m == MATCH_ERROR) | |
5397 | return m; | |
5398 | if (gfc_get_symbol (name, gfc_current_ns->parent, &sym)) | |
5399 | return MATCH_ERROR; | |
5400 | ||
60e19868 | 5401 | if (!gfc_add_interface (sym)) |
af1a34ee | 5402 | return MATCH_ERROR; |
5403 | ||
af1a34ee | 5404 | if (gfc_match_eos () == MATCH_YES) |
5405 | break; | |
5406 | if (gfc_match_char (',') != MATCH_YES) | |
5407 | goto syntax; | |
5408 | } | |
5409 | ||
5410 | return MATCH_YES; | |
5411 | ||
5412 | syntax: | |
5413 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
5414 | return MATCH_ERROR; | |
5415 | } | |
5416 | ||
5417 | ||
5418 | /* General matcher for PROCEDURE declarations. */ | |
5419 | ||
7fd88f6e | 5420 | static match match_procedure_in_type (void); |
5421 | ||
af1a34ee | 5422 | match |
5423 | gfc_match_procedure (void) | |
5424 | { | |
5425 | match m; | |
5426 | ||
5427 | switch (gfc_current_state ()) | |
5428 | { | |
5429 | case COMP_NONE: | |
5430 | case COMP_PROGRAM: | |
5431 | case COMP_MODULE: | |
4b8eb6ca | 5432 | case COMP_SUBMODULE: |
af1a34ee | 5433 | case COMP_SUBROUTINE: |
5434 | case COMP_FUNCTION: | |
0b342e60 | 5435 | case COMP_BLOCK: |
af1a34ee | 5436 | m = match_procedure_decl (); |
5437 | break; | |
5438 | case COMP_INTERFACE: | |
5439 | m = match_procedure_in_interface (); | |
5440 | break; | |
5441 | case COMP_DERIVED: | |
64e93293 | 5442 | m = match_ppc_decl (); |
5443 | break; | |
7fd88f6e | 5444 | case COMP_DERIVED_CONTAINS: |
5445 | m = match_procedure_in_type (); | |
5446 | break; | |
af1a34ee | 5447 | default: |
5448 | return MATCH_NO; | |
5449 | } | |
5450 | ||
5451 | if (m != MATCH_YES) | |
5452 | return m; | |
5453 | ||
60e19868 | 5454 | if (!gfc_notify_std (GFC_STD_F2003, "PROCEDURE statement at %C")) |
af1a34ee | 5455 | return MATCH_ERROR; |
5456 | ||
5457 | return m; | |
5458 | } | |
5459 | ||
5460 | ||
a34926ba | 5461 | /* Warn if a matched procedure has the same name as an intrinsic; this is |
5462 | simply a wrapper around gfc_warn_intrinsic_shadow that interprets the current | |
5463 | parser-state-stack to find out whether we're in a module. */ | |
5464 | ||
5465 | static void | |
8290d53f | 5466 | do_warn_intrinsic_shadow (const gfc_symbol* sym, bool func) |
a34926ba | 5467 | { |
5468 | bool in_module; | |
5469 | ||
5470 | in_module = (gfc_state_stack->previous | |
4b8eb6ca | 5471 | && (gfc_state_stack->previous->state == COMP_MODULE |
5472 | || gfc_state_stack->previous->state == COMP_SUBMODULE)); | |
a34926ba | 5473 | |
5474 | gfc_warn_intrinsic_shadow (sym, in_module, func); | |
5475 | } | |
5476 | ||
5477 | ||
4ee9c684 | 5478 | /* Match a function declaration. */ |
5479 | ||
5480 | match | |
5481 | gfc_match_function_decl (void) | |
5482 | { | |
5483 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5484 | gfc_symbol *sym, *result; | |
5485 | locus old_loc; | |
5486 | match m; | |
c5d33754 | 5487 | match suffix_match; |
8db94b3b | 5488 | match found_match; /* Status returned by match func. */ |
4ee9c684 | 5489 | |
5490 | if (gfc_current_state () != COMP_NONE | |
5491 | && gfc_current_state () != COMP_INTERFACE | |
5492 | && gfc_current_state () != COMP_CONTAINS) | |
5493 | return MATCH_NO; | |
5494 | ||
5495 | gfc_clear_ts (¤t_ts); | |
5496 | ||
cbb9e6aa | 5497 | old_loc = gfc_current_locus; |
4ee9c684 | 5498 | |
077932f9 | 5499 | m = gfc_match_prefix (¤t_ts); |
4ee9c684 | 5500 | if (m != MATCH_YES) |
5501 | { | |
cbb9e6aa | 5502 | gfc_current_locus = old_loc; |
4ee9c684 | 5503 | return m; |
5504 | } | |
5505 | ||
5506 | if (gfc_match ("function% %n", name) != MATCH_YES) | |
5507 | { | |
cbb9e6aa | 5508 | gfc_current_locus = old_loc; |
4ee9c684 | 5509 | return MATCH_NO; |
5510 | } | |
4b8eb6ca | 5511 | |
d77f260f | 5512 | if (get_proc_name (name, &sym, false)) |
4ee9c684 | 5513 | return MATCH_ERROR; |
1e057e9b | 5514 | |
60e19868 | 5515 | if (add_hidden_procptr_result (sym)) |
1e057e9b | 5516 | sym = sym->result; |
5517 | ||
4b8eb6ca | 5518 | if (current_attr.module_procedure) |
5519 | sym->attr.module_procedure = 1; | |
5520 | ||
4ee9c684 | 5521 | gfc_new_block = sym; |
5522 | ||
5523 | m = gfc_match_formal_arglist (sym, 0, 0); | |
5524 | if (m == MATCH_NO) | |
9b435b6d | 5525 | { |
5526 | gfc_error ("Expected formal argument list in function " | |
1a9745d2 | 5527 | "definition at %C"); |
9b435b6d | 5528 | m = MATCH_ERROR; |
5529 | goto cleanup; | |
5530 | } | |
4ee9c684 | 5531 | else if (m == MATCH_ERROR) |
5532 | goto cleanup; | |
5533 | ||
5534 | result = NULL; | |
5535 | ||
c5d33754 | 5536 | /* According to the draft, the bind(c) and result clause can |
5537 | come in either order after the formal_arg_list (i.e., either | |
5538 | can be first, both can exist together or by themselves or neither | |
5539 | one). Therefore, the match_result can't match the end of the | |
5540 | string, and check for the bind(c) or result clause in either order. */ | |
5541 | found_match = gfc_match_eos (); | |
5542 | ||
5543 | /* Make sure that it isn't already declared as BIND(C). If it is, it | |
5544 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5545 | not allowed for procedures. */ | |
5546 | if (sym->attr.is_bind_c == 1) | |
5547 | { | |
5548 | sym->attr.is_bind_c = 0; | |
5549 | if (sym->old_symbol != NULL) | |
5550 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5551 | "variables or common blocks", | |
5552 | &(sym->old_symbol->declared_at)); | |
5553 | else | |
5554 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5555 | "variables or common blocks", &gfc_current_locus); | |
4ee9c684 | 5556 | } |
5557 | ||
c5d33754 | 5558 | if (found_match != MATCH_YES) |
4ee9c684 | 5559 | { |
c5d33754 | 5560 | /* If we haven't found the end-of-statement, look for a suffix. */ |
5561 | suffix_match = gfc_match_suffix (sym, &result); | |
5562 | if (suffix_match == MATCH_YES) | |
5563 | /* Need to get the eos now. */ | |
5564 | found_match = gfc_match_eos (); | |
5565 | else | |
5566 | found_match = suffix_match; | |
4ee9c684 | 5567 | } |
5568 | ||
c5d33754 | 5569 | if(found_match != MATCH_YES) |
5570 | m = MATCH_ERROR; | |
4ee9c684 | 5571 | else |
5572 | { | |
c5d33754 | 5573 | /* Make changes to the symbol. */ |
5574 | m = MATCH_ERROR; | |
8db94b3b | 5575 | |
60e19868 | 5576 | if (!gfc_add_function (&sym->attr, sym->name, NULL)) |
c5d33754 | 5577 | goto cleanup; |
8db94b3b | 5578 | |
60e19868 | 5579 | if (!gfc_missing_attr (&sym->attr, NULL) |
5580 | || !copy_prefix (&sym->attr, &sym->declared_at)) | |
c5d33754 | 5581 | goto cleanup; |
4ee9c684 | 5582 | |
8d39570e | 5583 | /* Delay matching the function characteristics until after the |
077932f9 | 5584 | specification block by signalling kind=-1. */ |
8d39570e | 5585 | sym->declared_at = old_loc; |
5586 | if (current_ts.type != BT_UNKNOWN) | |
5587 | current_ts.kind = -1; | |
5588 | else | |
5589 | current_ts.kind = 0; | |
077932f9 | 5590 | |
c5d33754 | 5591 | if (result == NULL) |
5592 | { | |
0477d42d | 5593 | if (current_ts.type != BT_UNKNOWN |
60e19868 | 5594 | && !gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
0477d42d | 5595 | goto cleanup; |
c5d33754 | 5596 | sym->result = sym; |
5597 | } | |
5598 | else | |
5599 | { | |
0477d42d | 5600 | if (current_ts.type != BT_UNKNOWN |
60e19868 | 5601 | && !gfc_add_type (result, ¤t_ts, &gfc_current_locus)) |
0477d42d | 5602 | goto cleanup; |
c5d33754 | 5603 | sym->result = result; |
5604 | } | |
5605 | ||
a34926ba | 5606 | /* Warn if this procedure has the same name as an intrinsic. */ |
8290d53f | 5607 | do_warn_intrinsic_shadow (sym, true); |
a34926ba | 5608 | |
c5d33754 | 5609 | return MATCH_YES; |
5610 | } | |
4ee9c684 | 5611 | |
5612 | cleanup: | |
cbb9e6aa | 5613 | gfc_current_locus = old_loc; |
4ee9c684 | 5614 | return m; |
5615 | } | |
5616 | ||
1a9745d2 | 5617 | |
5618 | /* This is mostly a copy of parse.c(add_global_procedure) but modified to | |
5619 | pass the name of the entry, rather than the gfc_current_block name, and | |
5620 | to return false upon finding an existing global entry. */ | |
858f9894 | 5621 | |
5622 | static bool | |
8d779aef | 5623 | add_global_entry (const char *name, const char *binding_label, bool sub, |
5624 | locus *where) | |
858f9894 | 5625 | { |
5626 | gfc_gsymbol *s; | |
8458f4ca | 5627 | enum gfc_symbol_type type; |
858f9894 | 5628 | |
5b11d932 | 5629 | type = sub ? GSYM_SUBROUTINE : GSYM_FUNCTION; |
858f9894 | 5630 | |
da5c730d | 5631 | /* Only in Fortran 2003: For procedures with a binding label also the Fortran |
5632 | name is a global identifier. */ | |
5633 | if (!binding_label || gfc_notification_std (GFC_STD_F2008)) | |
858f9894 | 5634 | { |
da5c730d | 5635 | s = gfc_get_gsymbol (name); |
5636 | ||
5637 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
5638 | { | |
8d779aef | 5639 | gfc_global_used (s, where); |
da5c730d | 5640 | return false; |
5641 | } | |
5642 | else | |
5643 | { | |
5644 | s->type = type; | |
c8b913ab | 5645 | s->sym_name = name; |
8d779aef | 5646 | s->where = *where; |
da5c730d | 5647 | s->defined = 1; |
5648 | s->ns = gfc_current_ns; | |
5649 | } | |
858f9894 | 5650 | } |
da5c730d | 5651 | |
5652 | /* Don't add the symbol multiple times. */ | |
5653 | if (binding_label | |
5654 | && (!gfc_notification_std (GFC_STD_F2008) | |
5655 | || strcmp (name, binding_label) != 0)) | |
5656 | { | |
5657 | s = gfc_get_gsymbol (binding_label); | |
5658 | ||
5659 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
5660 | { | |
8d779aef | 5661 | gfc_global_used (s, where); |
da5c730d | 5662 | return false; |
5663 | } | |
5664 | else | |
5665 | { | |
5666 | s->type = type; | |
c8b913ab | 5667 | s->sym_name = name; |
da5c730d | 5668 | s->binding_label = binding_label; |
8d779aef | 5669 | s->where = *where; |
da5c730d | 5670 | s->defined = 1; |
5671 | s->ns = gfc_current_ns; | |
5672 | } | |
5673 | } | |
5674 | ||
5675 | return true; | |
858f9894 | 5676 | } |
4ee9c684 | 5677 | |
1a9745d2 | 5678 | |
4ee9c684 | 5679 | /* Match an ENTRY statement. */ |
5680 | ||
5681 | match | |
5682 | gfc_match_entry (void) | |
5683 | { | |
1b716045 | 5684 | gfc_symbol *proc; |
5685 | gfc_symbol *result; | |
5686 | gfc_symbol *entry; | |
4ee9c684 | 5687 | char name[GFC_MAX_SYMBOL_LEN + 1]; |
5688 | gfc_compile_state state; | |
5689 | match m; | |
1b716045 | 5690 | gfc_entry_list *el; |
7b5e1acc | 5691 | locus old_loc; |
d77f260f | 5692 | bool module_procedure; |
86f0974b | 5693 | char peek_char; |
5694 | match is_bind_c; | |
4ee9c684 | 5695 | |
5696 | m = gfc_match_name (name); | |
5697 | if (m != MATCH_YES) | |
5698 | return m; | |
5699 | ||
60e19868 | 5700 | if (!gfc_notify_std (GFC_STD_F2008_OBS, "ENTRY statement at %C")) |
a3b81b0f | 5701 | return MATCH_ERROR; |
5702 | ||
1b716045 | 5703 | state = gfc_current_state (); |
ea37f786 | 5704 | if (state != COMP_SUBROUTINE && state != COMP_FUNCTION) |
1b716045 | 5705 | { |
ea37f786 | 5706 | switch (state) |
5707 | { | |
5708 | case COMP_PROGRAM: | |
5709 | gfc_error ("ENTRY statement at %C cannot appear within a PROGRAM"); | |
5710 | break; | |
5711 | case COMP_MODULE: | |
5712 | gfc_error ("ENTRY statement at %C cannot appear within a MODULE"); | |
5713 | break; | |
4b8eb6ca | 5714 | case COMP_SUBMODULE: |
5715 | gfc_error ("ENTRY statement at %C cannot appear within a SUBMODULE"); | |
5716 | break; | |
ea37f786 | 5717 | case COMP_BLOCK_DATA: |
1a9745d2 | 5718 | gfc_error ("ENTRY statement at %C cannot appear within " |
5719 | "a BLOCK DATA"); | |
ea37f786 | 5720 | break; |
5721 | case COMP_INTERFACE: | |
1a9745d2 | 5722 | gfc_error ("ENTRY statement at %C cannot appear within " |
5723 | "an INTERFACE"); | |
ea37f786 | 5724 | break; |
5725 | case COMP_DERIVED: | |
1a9745d2 | 5726 | gfc_error ("ENTRY statement at %C cannot appear within " |
5727 | "a DERIVED TYPE block"); | |
ea37f786 | 5728 | break; |
5729 | case COMP_IF: | |
1a9745d2 | 5730 | gfc_error ("ENTRY statement at %C cannot appear within " |
5731 | "an IF-THEN block"); | |
ea37f786 | 5732 | break; |
5733 | case COMP_DO: | |
55ea8666 | 5734 | case COMP_DO_CONCURRENT: |
1a9745d2 | 5735 | gfc_error ("ENTRY statement at %C cannot appear within " |
5736 | "a DO block"); | |
ea37f786 | 5737 | break; |
5738 | case COMP_SELECT: | |
1a9745d2 | 5739 | gfc_error ("ENTRY statement at %C cannot appear within " |
5740 | "a SELECT block"); | |
ea37f786 | 5741 | break; |
5742 | case COMP_FORALL: | |
1a9745d2 | 5743 | gfc_error ("ENTRY statement at %C cannot appear within " |
5744 | "a FORALL block"); | |
ea37f786 | 5745 | break; |
5746 | case COMP_WHERE: | |
1a9745d2 | 5747 | gfc_error ("ENTRY statement at %C cannot appear within " |
5748 | "a WHERE block"); | |
ea37f786 | 5749 | break; |
5750 | case COMP_CONTAINS: | |
1a9745d2 | 5751 | gfc_error ("ENTRY statement at %C cannot appear within " |
5752 | "a contained subprogram"); | |
ea37f786 | 5753 | break; |
5754 | default: | |
3132dbae | 5755 | gfc_error ("Unexpected ENTRY statement at %C"); |
ea37f786 | 5756 | } |
1b716045 | 5757 | return MATCH_ERROR; |
5758 | } | |
5759 | ||
d77f260f | 5760 | module_procedure = gfc_current_ns->parent != NULL |
1a9745d2 | 5761 | && gfc_current_ns->parent->proc_name |
5762 | && gfc_current_ns->parent->proc_name->attr.flavor | |
5763 | == FL_MODULE; | |
d77f260f | 5764 | |
1b716045 | 5765 | if (gfc_current_ns->parent != NULL |
5766 | && gfc_current_ns->parent->proc_name | |
d77f260f | 5767 | && !module_procedure) |
1b716045 | 5768 | { |
5769 | gfc_error("ENTRY statement at %C cannot appear in a " | |
5770 | "contained procedure"); | |
5771 | return MATCH_ERROR; | |
5772 | } | |
5773 | ||
d77f260f | 5774 | /* Module function entries need special care in get_proc_name |
5775 | because previous references within the function will have | |
5776 | created symbols attached to the current namespace. */ | |
5777 | if (get_proc_name (name, &entry, | |
5778 | gfc_current_ns->parent != NULL | |
c1e4695a | 5779 | && module_procedure)) |
4ee9c684 | 5780 | return MATCH_ERROR; |
5781 | ||
1b716045 | 5782 | proc = gfc_current_block (); |
5783 | ||
86f0974b | 5784 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
5785 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5786 | not allowed for procedures. */ | |
5787 | if (entry->attr.is_bind_c == 1) | |
5788 | { | |
5789 | entry->attr.is_bind_c = 0; | |
5790 | if (entry->old_symbol != NULL) | |
5791 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5792 | "variables or common blocks", | |
5793 | &(entry->old_symbol->declared_at)); | |
5794 | else | |
5795 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5796 | "variables or common blocks", &gfc_current_locus); | |
5797 | } | |
8db94b3b | 5798 | |
86f0974b | 5799 | /* Check what next non-whitespace character is so we can tell if there |
5800 | is the required parens if we have a BIND(C). */ | |
8d779aef | 5801 | old_loc = gfc_current_locus; |
86f0974b | 5802 | gfc_gobble_whitespace (); |
e0be6f02 | 5803 | peek_char = gfc_peek_ascii_char (); |
86f0974b | 5804 | |
1b716045 | 5805 | if (state == COMP_SUBROUTINE) |
4ee9c684 | 5806 | { |
4ee9c684 | 5807 | m = gfc_match_formal_arglist (entry, 0, 1); |
5808 | if (m != MATCH_YES) | |
5809 | return MATCH_ERROR; | |
5810 | ||
75ae7f6c | 5811 | /* Call gfc_match_bind_c with allow_binding_name = true as ENTRY can |
5812 | never be an internal procedure. */ | |
5813 | is_bind_c = gfc_match_bind_c (entry, true); | |
86f0974b | 5814 | if (is_bind_c == MATCH_ERROR) |
5815 | return MATCH_ERROR; | |
5816 | if (is_bind_c == MATCH_YES) | |
5817 | { | |
5818 | if (peek_char != '(') | |
5819 | { | |
5820 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
5821 | return MATCH_ERROR; | |
5822 | } | |
60e19868 | 5823 | if (!gfc_add_is_bind_c (&(entry->attr), entry->name, |
5824 | &(entry->declared_at), 1)) | |
86f0974b | 5825 | return MATCH_ERROR; |
5826 | } | |
5827 | ||
da5c730d | 5828 | if (!gfc_current_ns->parent |
8d779aef | 5829 | && !add_global_entry (name, entry->binding_label, true, |
5830 | &old_loc)) | |
da5c730d | 5831 | return MATCH_ERROR; |
5832 | ||
5833 | /* An entry in a subroutine. */ | |
60e19868 | 5834 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
5835 | || !gfc_add_subroutine (&entry->attr, entry->name, NULL)) | |
4ee9c684 | 5836 | return MATCH_ERROR; |
1b716045 | 5837 | } |
5838 | else | |
5839 | { | |
7b5e1acc | 5840 | /* An entry in a function. |
1a9745d2 | 5841 | We need to take special care because writing |
5842 | ENTRY f() | |
5843 | as | |
5844 | ENTRY f | |
5845 | is allowed, whereas | |
5846 | ENTRY f() RESULT (r) | |
5847 | can't be written as | |
5848 | ENTRY f RESULT (r). */ | |
7b5e1acc | 5849 | if (gfc_match_eos () == MATCH_YES) |
5850 | { | |
5851 | gfc_current_locus = old_loc; | |
5852 | /* Match the empty argument list, and add the interface to | |
5853 | the symbol. */ | |
5854 | m = gfc_match_formal_arglist (entry, 0, 1); | |
5855 | } | |
5856 | else | |
5857 | m = gfc_match_formal_arglist (entry, 0, 0); | |
5858 | ||
4ee9c684 | 5859 | if (m != MATCH_YES) |
5860 | return MATCH_ERROR; | |
5861 | ||
4ee9c684 | 5862 | result = NULL; |
5863 | ||
5864 | if (gfc_match_eos () == MATCH_YES) | |
5865 | { | |
60e19868 | 5866 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
5867 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
4ee9c684 | 5868 | return MATCH_ERROR; |
5869 | ||
c6871095 | 5870 | entry->result = entry; |
4ee9c684 | 5871 | } |
5872 | else | |
5873 | { | |
86f0974b | 5874 | m = gfc_match_suffix (entry, &result); |
4ee9c684 | 5875 | if (m == MATCH_NO) |
5876 | gfc_syntax_error (ST_ENTRY); | |
5877 | if (m != MATCH_YES) | |
5878 | return MATCH_ERROR; | |
5879 | ||
86f0974b | 5880 | if (result) |
5881 | { | |
60e19868 | 5882 | if (!gfc_add_result (&result->attr, result->name, NULL) |
5883 | || !gfc_add_entry (&entry->attr, result->name, NULL) | |
5884 | || !gfc_add_function (&entry->attr, result->name, NULL)) | |
86f0974b | 5885 | return MATCH_ERROR; |
5886 | entry->result = result; | |
5887 | } | |
5888 | else | |
5889 | { | |
60e19868 | 5890 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
5891 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
86f0974b | 5892 | return MATCH_ERROR; |
5893 | entry->result = entry; | |
5894 | } | |
4ee9c684 | 5895 | } |
da5c730d | 5896 | |
5897 | if (!gfc_current_ns->parent | |
8d779aef | 5898 | && !add_global_entry (name, entry->binding_label, false, |
5899 | &old_loc)) | |
da5c730d | 5900 | return MATCH_ERROR; |
4ee9c684 | 5901 | } |
5902 | ||
5903 | if (gfc_match_eos () != MATCH_YES) | |
5904 | { | |
5905 | gfc_syntax_error (ST_ENTRY); | |
5906 | return MATCH_ERROR; | |
5907 | } | |
5908 | ||
1b716045 | 5909 | entry->attr.recursive = proc->attr.recursive; |
5910 | entry->attr.elemental = proc->attr.elemental; | |
5911 | entry->attr.pure = proc->attr.pure; | |
4ee9c684 | 5912 | |
1b716045 | 5913 | el = gfc_get_entry_list (); |
5914 | el->sym = entry; | |
5915 | el->next = gfc_current_ns->entries; | |
5916 | gfc_current_ns->entries = el; | |
5917 | if (el->next) | |
5918 | el->id = el->next->id + 1; | |
5919 | else | |
5920 | el->id = 1; | |
4ee9c684 | 5921 | |
1b716045 | 5922 | new_st.op = EXEC_ENTRY; |
5923 | new_st.ext.entry = el; | |
5924 | ||
5925 | return MATCH_YES; | |
4ee9c684 | 5926 | } |
5927 | ||
5928 | ||
5929 | /* Match a subroutine statement, including optional prefixes. */ | |
5930 | ||
5931 | match | |
5932 | gfc_match_subroutine (void) | |
5933 | { | |
5934 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5935 | gfc_symbol *sym; | |
5936 | match m; | |
c5d33754 | 5937 | match is_bind_c; |
5938 | char peek_char; | |
75ae7f6c | 5939 | bool allow_binding_name; |
4ee9c684 | 5940 | |
5941 | if (gfc_current_state () != COMP_NONE | |
5942 | && gfc_current_state () != COMP_INTERFACE | |
5943 | && gfc_current_state () != COMP_CONTAINS) | |
5944 | return MATCH_NO; | |
5945 | ||
077932f9 | 5946 | m = gfc_match_prefix (NULL); |
4ee9c684 | 5947 | if (m != MATCH_YES) |
5948 | return m; | |
5949 | ||
5950 | m = gfc_match ("subroutine% %n", name); | |
5951 | if (m != MATCH_YES) | |
5952 | return m; | |
5953 | ||
d77f260f | 5954 | if (get_proc_name (name, &sym, false)) |
4ee9c684 | 5955 | return MATCH_ERROR; |
1e057e9b | 5956 | |
22c1d301 | 5957 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if |
293d72e0 | 5958 | the symbol existed before. */ |
22c1d301 | 5959 | sym->declared_at = gfc_current_locus; |
5960 | ||
4b8eb6ca | 5961 | if (current_attr.module_procedure) |
5962 | sym->attr.module_procedure = 1; | |
5963 | ||
60e19868 | 5964 | if (add_hidden_procptr_result (sym)) |
1e057e9b | 5965 | sym = sym->result; |
5966 | ||
4ee9c684 | 5967 | gfc_new_block = sym; |
5968 | ||
c5d33754 | 5969 | /* Check what next non-whitespace character is so we can tell if there |
86f0974b | 5970 | is the required parens if we have a BIND(C). */ |
c5d33754 | 5971 | gfc_gobble_whitespace (); |
e0be6f02 | 5972 | peek_char = gfc_peek_ascii_char (); |
8db94b3b | 5973 | |
60e19868 | 5974 | if (!gfc_add_subroutine (&sym->attr, sym->name, NULL)) |
4ee9c684 | 5975 | return MATCH_ERROR; |
5976 | ||
5977 | if (gfc_match_formal_arglist (sym, 0, 1) != MATCH_YES) | |
5978 | return MATCH_ERROR; | |
5979 | ||
c5d33754 | 5980 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
5981 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5982 | not allowed for procedures. */ | |
5983 | if (sym->attr.is_bind_c == 1) | |
5984 | { | |
5985 | sym->attr.is_bind_c = 0; | |
5986 | if (sym->old_symbol != NULL) | |
5987 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5988 | "variables or common blocks", | |
5989 | &(sym->old_symbol->declared_at)); | |
5990 | else | |
5991 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5992 | "variables or common blocks", &gfc_current_locus); | |
5993 | } | |
75ae7f6c | 5994 | |
5995 | /* C binding names are not allowed for internal procedures. */ | |
5996 | if (gfc_current_state () == COMP_CONTAINS | |
5997 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
5998 | allow_binding_name = false; | |
5999 | else | |
6000 | allow_binding_name = true; | |
6001 | ||
c5d33754 | 6002 | /* Here, we are just checking if it has the bind(c) attribute, and if |
6003 | so, then we need to make sure it's all correct. If it doesn't, | |
6004 | we still need to continue matching the rest of the subroutine line. */ | |
75ae7f6c | 6005 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
c5d33754 | 6006 | if (is_bind_c == MATCH_ERROR) |
6007 | { | |
6008 | /* There was an attempt at the bind(c), but it was wrong. An | |
6009 | error message should have been printed w/in the gfc_match_bind_c | |
6010 | so here we'll just return the MATCH_ERROR. */ | |
6011 | return MATCH_ERROR; | |
6012 | } | |
6013 | ||
6014 | if (is_bind_c == MATCH_YES) | |
6015 | { | |
75ae7f6c | 6016 | /* The following is allowed in the Fortran 2008 draft. */ |
4518e961 | 6017 | if (gfc_current_state () == COMP_CONTAINS |
75ae7f6c | 6018 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
60e19868 | 6019 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
6020 | "at %L may not be specified for an internal " | |
6021 | "procedure", &gfc_current_locus)) | |
75ae7f6c | 6022 | return MATCH_ERROR; |
6023 | ||
c5d33754 | 6024 | if (peek_char != '(') |
6025 | { | |
6026 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
6027 | return MATCH_ERROR; | |
6028 | } | |
60e19868 | 6029 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, |
6030 | &(sym->declared_at), 1)) | |
c5d33754 | 6031 | return MATCH_ERROR; |
6032 | } | |
8db94b3b | 6033 | |
4ee9c684 | 6034 | if (gfc_match_eos () != MATCH_YES) |
6035 | { | |
6036 | gfc_syntax_error (ST_SUBROUTINE); | |
6037 | return MATCH_ERROR; | |
6038 | } | |
6039 | ||
60e19868 | 6040 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
4ee9c684 | 6041 | return MATCH_ERROR; |
6042 | ||
a34926ba | 6043 | /* Warn if it has the same name as an intrinsic. */ |
8290d53f | 6044 | do_warn_intrinsic_shadow (sym, false); |
a34926ba | 6045 | |
4ee9c684 | 6046 | return MATCH_YES; |
6047 | } | |
6048 | ||
6049 | ||
7136063b | 6050 | /* Check that the NAME identifier in a BIND attribute or statement |
6051 | is conform to C identifier rules. */ | |
6052 | ||
6053 | match | |
6054 | check_bind_name_identifier (char **name) | |
6055 | { | |
6056 | char *n = *name, *p; | |
6057 | ||
6058 | /* Remove leading spaces. */ | |
6059 | while (*n == ' ') | |
6060 | n++; | |
6061 | ||
6062 | /* On an empty string, free memory and set name to NULL. */ | |
6063 | if (*n == '\0') | |
6064 | { | |
6065 | free (*name); | |
6066 | *name = NULL; | |
6067 | return MATCH_YES; | |
6068 | } | |
6069 | ||
6070 | /* Remove trailing spaces. */ | |
6071 | p = n + strlen(n) - 1; | |
6072 | while (*p == ' ') | |
6073 | *(p--) = '\0'; | |
6074 | ||
6075 | /* Insert the identifier into the symbol table. */ | |
6076 | p = xstrdup (n); | |
6077 | free (*name); | |
6078 | *name = p; | |
6079 | ||
6080 | /* Now check that identifier is valid under C rules. */ | |
6081 | if (ISDIGIT (*p)) | |
6082 | { | |
6083 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
6084 | return MATCH_ERROR; | |
6085 | } | |
6086 | ||
6087 | for (; *p; p++) | |
6088 | if (!(ISALNUM (*p) || *p == '_' || *p == '$')) | |
6089 | { | |
6090 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
6091 | return MATCH_ERROR; | |
6092 | } | |
6093 | ||
6094 | return MATCH_YES; | |
6095 | } | |
6096 | ||
6097 | ||
c5d33754 | 6098 | /* Match a BIND(C) specifier, with the optional 'name=' specifier if |
6099 | given, and set the binding label in either the given symbol (if not | |
a0527218 | 6100 | NULL), or in the current_ts. The symbol may be NULL because we may |
c5d33754 | 6101 | encounter the BIND(C) before the declaration itself. Return |
6102 | MATCH_NO if what we're looking at isn't a BIND(C) specifier, | |
6103 | MATCH_ERROR if it is a BIND(C) clause but an error was encountered, | |
6104 | or MATCH_YES if the specifier was correct and the binding label and | |
6105 | bind(c) fields were set correctly for the given symbol or the | |
75ae7f6c | 6106 | current_ts. If allow_binding_name is false, no binding name may be |
6107 | given. */ | |
c5d33754 | 6108 | |
6109 | match | |
75ae7f6c | 6110 | gfc_match_bind_c (gfc_symbol *sym, bool allow_binding_name) |
c5d33754 | 6111 | { |
7136063b | 6112 | char *binding_label = NULL; |
6113 | gfc_expr *e = NULL; | |
c5d33754 | 6114 | |
8db94b3b | 6115 | /* Initialize the flag that specifies whether we encountered a NAME= |
c5d33754 | 6116 | specifier or not. */ |
6117 | has_name_equals = 0; | |
6118 | ||
c5d33754 | 6119 | /* This much we have to be able to match, in this order, if |
6120 | there is a bind(c) label. */ | |
6121 | if (gfc_match (" bind ( c ") != MATCH_YES) | |
6122 | return MATCH_NO; | |
6123 | ||
6124 | /* Now see if there is a binding label, or if we've reached the | |
6125 | end of the bind(c) attribute without one. */ | |
6126 | if (gfc_match_char (',') == MATCH_YES) | |
6127 | { | |
6128 | if (gfc_match (" name = ") != MATCH_YES) | |
6129 | { | |
6130 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
6131 | "at %C"); | |
6132 | /* should give an error message here */ | |
6133 | return MATCH_ERROR; | |
6134 | } | |
6135 | ||
6136 | has_name_equals = 1; | |
6137 | ||
7136063b | 6138 | if (gfc_match_init_expr (&e) != MATCH_YES) |
6139 | { | |
6140 | gfc_free_expr (e); | |
6141 | return MATCH_ERROR; | |
6142 | } | |
8db94b3b | 6143 | |
7136063b | 6144 | if (!gfc_simplify_expr(e, 0)) |
c5d33754 | 6145 | { |
7136063b | 6146 | gfc_error ("NAME= specifier at %C should be a constant expression"); |
6147 | gfc_free_expr (e); | |
6148 | return MATCH_ERROR; | |
c5d33754 | 6149 | } |
7136063b | 6150 | |
6151 | if (e->expr_type != EXPR_CONSTANT || e->ts.type != BT_CHARACTER | |
6152 | || e->ts.kind != gfc_default_character_kind || e->rank != 0) | |
c5d33754 | 6153 | { |
7136063b | 6154 | gfc_error ("NAME= specifier at %C should be a scalar of " |
6155 | "default character kind"); | |
6156 | gfc_free_expr(e); | |
6157 | return MATCH_ERROR; | |
c5d33754 | 6158 | } |
7136063b | 6159 | |
6160 | // Get a C string from the Fortran string constant | |
6161 | binding_label = gfc_widechar_to_char (e->value.character.string, | |
6162 | e->value.character.length); | |
6163 | gfc_free_expr(e); | |
6164 | ||
6165 | // Check that it is valid (old gfc_match_name_C) | |
6166 | if (check_bind_name_identifier (&binding_label) != MATCH_YES) | |
6167 | return MATCH_ERROR; | |
6168 | } | |
c5d33754 | 6169 | |
6170 | /* Get the required right paren. */ | |
6171 | if (gfc_match_char (')') != MATCH_YES) | |
6172 | { | |
6173 | gfc_error ("Missing closing paren for binding label at %C"); | |
6174 | return MATCH_ERROR; | |
6175 | } | |
6176 | ||
75ae7f6c | 6177 | if (has_name_equals && !allow_binding_name) |
6178 | { | |
6179 | gfc_error ("No binding name is allowed in BIND(C) at %C"); | |
6180 | return MATCH_ERROR; | |
6181 | } | |
6182 | ||
6183 | if (has_name_equals && sym != NULL && sym->attr.dummy) | |
6184 | { | |
6185 | gfc_error ("For dummy procedure %s, no binding name is " | |
6186 | "allowed in BIND(C) at %C", sym->name); | |
6187 | return MATCH_ERROR; | |
6188 | } | |
6189 | ||
6190 | ||
c5d33754 | 6191 | /* Save the binding label to the symbol. If sym is null, we're |
6192 | probably matching the typespec attributes of a declaration and | |
6193 | haven't gotten the name yet, and therefore, no symbol yet. */ | |
7b2060ba | 6194 | if (binding_label) |
c5d33754 | 6195 | { |
6196 | if (sym != NULL) | |
7b2060ba | 6197 | sym->binding_label = binding_label; |
c5d33754 | 6198 | else |
7b2060ba | 6199 | curr_binding_label = binding_label; |
c5d33754 | 6200 | } |
75ae7f6c | 6201 | else if (allow_binding_name) |
c5d33754 | 6202 | { |
6203 | /* No binding label, but if symbol isn't null, we | |
75ae7f6c | 6204 | can set the label for it here. |
6205 | If name="" or allow_binding_name is false, no C binding name is | |
293d72e0 | 6206 | created. */ |
c5d33754 | 6207 | if (sym != NULL && sym->name != NULL && has_name_equals == 0) |
7b2060ba | 6208 | sym->binding_label = IDENTIFIER_POINTER (get_identifier (sym->name)); |
c5d33754 | 6209 | } |
94fa7146 | 6210 | |
5cf92482 | 6211 | if (has_name_equals && gfc_current_state () == COMP_INTERFACE |
6212 | && current_interface.type == INTERFACE_ABSTRACT) | |
94fa7146 | 6213 | { |
6214 | gfc_error ("NAME not allowed on BIND(C) for ABSTRACT INTERFACE at %C"); | |
6215 | return MATCH_ERROR; | |
6216 | } | |
6217 | ||
c5d33754 | 6218 | return MATCH_YES; |
6219 | } | |
6220 | ||
6221 | ||
231e961a | 6222 | /* Return nonzero if we're currently compiling a contained procedure. */ |
c0985832 | 6223 | |
6224 | static int | |
6225 | contained_procedure (void) | |
6226 | { | |
1c343287 | 6227 | gfc_state_data *s = gfc_state_stack; |
c0985832 | 6228 | |
1c343287 | 6229 | if ((s->state == COMP_SUBROUTINE || s->state == COMP_FUNCTION) |
6230 | && s->previous != NULL && s->previous->state == COMP_CONTAINS) | |
6231 | return 1; | |
c0985832 | 6232 | |
6233 | return 0; | |
6234 | } | |
6235 | ||
e14bee04 | 6236 | /* Set the kind of each enumerator. The kind is selected such that it is |
3b6a4b41 | 6237 | interoperable with the corresponding C enumeration type, making |
6238 | sure that -fshort-enums is honored. */ | |
6239 | ||
6240 | static void | |
6241 | set_enum_kind(void) | |
6242 | { | |
6243 | enumerator_history *current_history = NULL; | |
6244 | int kind; | |
6245 | int i; | |
6246 | ||
6247 | if (max_enum == NULL || enum_history == NULL) | |
6248 | return; | |
6249 | ||
6f092e31 | 6250 | if (!flag_short_enums) |
e14bee04 | 6251 | return; |
6252 | ||
3b6a4b41 | 6253 | i = 0; |
6254 | do | |
6255 | { | |
6256 | kind = gfc_integer_kinds[i++].kind; | |
6257 | } | |
e14bee04 | 6258 | while (kind < gfc_c_int_kind |
3b6a4b41 | 6259 | && gfc_check_integer_range (max_enum->initializer->value.integer, |
6260 | kind) != ARITH_OK); | |
6261 | ||
6262 | current_history = enum_history; | |
6263 | while (current_history != NULL) | |
6264 | { | |
6265 | current_history->sym->ts.kind = kind; | |
6266 | current_history = current_history->next; | |
6267 | } | |
6268 | } | |
6269 | ||
1a9745d2 | 6270 | |
4ee9c684 | 6271 | /* Match any of the various end-block statements. Returns the type of |
6a7084d7 | 6272 | END to the caller. The END INTERFACE, END IF, END DO, END SELECT |
6273 | and END BLOCK statements cannot be replaced by a single END statement. */ | |
4ee9c684 | 6274 | |
6275 | match | |
1a9745d2 | 6276 | gfc_match_end (gfc_statement *st) |
4ee9c684 | 6277 | { |
6278 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6279 | gfc_compile_state state; | |
6280 | locus old_loc; | |
6281 | const char *block_name; | |
6282 | const char *target; | |
c0985832 | 6283 | int eos_ok; |
4ee9c684 | 6284 | match m; |
9e5e87d9 | 6285 | gfc_namespace *parent_ns, *ns, *prev_ns; |
6286 | gfc_namespace **nsp; | |
4b8eb6ca | 6287 | bool abreviated_modproc_decl; |
4ee9c684 | 6288 | |
cbb9e6aa | 6289 | old_loc = gfc_current_locus; |
4ee9c684 | 6290 | if (gfc_match ("end") != MATCH_YES) |
6291 | return MATCH_NO; | |
6292 | ||
6293 | state = gfc_current_state (); | |
1a9745d2 | 6294 | block_name = gfc_current_block () == NULL |
6295 | ? NULL : gfc_current_block ()->name; | |
4ee9c684 | 6296 | |
d18a512a | 6297 | switch (state) |
4ee9c684 | 6298 | { |
d18a512a | 6299 | case COMP_ASSOCIATE: |
6300 | case COMP_BLOCK: | |
5ebb0bc6 | 6301 | if (!strncmp (block_name, "block@", strlen("block@"))) |
d18a512a | 6302 | block_name = NULL; |
6303 | break; | |
6304 | ||
6305 | case COMP_CONTAINS: | |
6306 | case COMP_DERIVED_CONTAINS: | |
4ee9c684 | 6307 | state = gfc_state_stack->previous->state; |
1a9745d2 | 6308 | block_name = gfc_state_stack->previous->sym == NULL |
6309 | ? NULL : gfc_state_stack->previous->sym->name; | |
d18a512a | 6310 | break; |
6311 | ||
6312 | default: | |
6313 | break; | |
4ee9c684 | 6314 | } |
6315 | ||
4b8eb6ca | 6316 | abreviated_modproc_decl |
6317 | = gfc_current_block () | |
6318 | && gfc_current_block ()->abr_modproc_decl; | |
6319 | ||
4ee9c684 | 6320 | switch (state) |
6321 | { | |
6322 | case COMP_NONE: | |
6323 | case COMP_PROGRAM: | |
6324 | *st = ST_END_PROGRAM; | |
6325 | target = " program"; | |
c0985832 | 6326 | eos_ok = 1; |
4ee9c684 | 6327 | break; |
6328 | ||
6329 | case COMP_SUBROUTINE: | |
6330 | *st = ST_END_SUBROUTINE; | |
4b8eb6ca | 6331 | if (!abreviated_modproc_decl) |
4ee9c684 | 6332 | target = " subroutine"; |
4b8eb6ca | 6333 | else |
6334 | target = " procedure"; | |
c0985832 | 6335 | eos_ok = !contained_procedure (); |
4ee9c684 | 6336 | break; |
6337 | ||
6338 | case COMP_FUNCTION: | |
6339 | *st = ST_END_FUNCTION; | |
4b8eb6ca | 6340 | if (!abreviated_modproc_decl) |
4ee9c684 | 6341 | target = " function"; |
4b8eb6ca | 6342 | else |
6343 | target = " procedure"; | |
c0985832 | 6344 | eos_ok = !contained_procedure (); |
4ee9c684 | 6345 | break; |
6346 | ||
6347 | case COMP_BLOCK_DATA: | |
6348 | *st = ST_END_BLOCK_DATA; | |
6349 | target = " block data"; | |
c0985832 | 6350 | eos_ok = 1; |
4ee9c684 | 6351 | break; |
6352 | ||
6353 | case COMP_MODULE: | |
6354 | *st = ST_END_MODULE; | |
6355 | target = " module"; | |
c0985832 | 6356 | eos_ok = 1; |
4ee9c684 | 6357 | break; |
6358 | ||
4b8eb6ca | 6359 | case COMP_SUBMODULE: |
6360 | *st = ST_END_SUBMODULE; | |
6361 | target = " submodule"; | |
6362 | eos_ok = 1; | |
6363 | break; | |
6364 | ||
4ee9c684 | 6365 | case COMP_INTERFACE: |
6366 | *st = ST_END_INTERFACE; | |
6367 | target = " interface"; | |
c0985832 | 6368 | eos_ok = 0; |
4ee9c684 | 6369 | break; |
6370 | ||
6371 | case COMP_DERIVED: | |
7fd88f6e | 6372 | case COMP_DERIVED_CONTAINS: |
4ee9c684 | 6373 | *st = ST_END_TYPE; |
6374 | target = " type"; | |
c0985832 | 6375 | eos_ok = 0; |
4ee9c684 | 6376 | break; |
6377 | ||
d18a512a | 6378 | case COMP_ASSOCIATE: |
6379 | *st = ST_END_ASSOCIATE; | |
6380 | target = " associate"; | |
6381 | eos_ok = 0; | |
6382 | break; | |
6383 | ||
6a7084d7 | 6384 | case COMP_BLOCK: |
6385 | *st = ST_END_BLOCK; | |
6386 | target = " block"; | |
6387 | eos_ok = 0; | |
6388 | break; | |
6389 | ||
4ee9c684 | 6390 | case COMP_IF: |
6391 | *st = ST_ENDIF; | |
6392 | target = " if"; | |
c0985832 | 6393 | eos_ok = 0; |
4ee9c684 | 6394 | break; |
6395 | ||
6396 | case COMP_DO: | |
55ea8666 | 6397 | case COMP_DO_CONCURRENT: |
4ee9c684 | 6398 | *st = ST_ENDDO; |
6399 | target = " do"; | |
c0985832 | 6400 | eos_ok = 0; |
4ee9c684 | 6401 | break; |
6402 | ||
c6cd3066 | 6403 | case COMP_CRITICAL: |
6404 | *st = ST_END_CRITICAL; | |
6405 | target = " critical"; | |
6406 | eos_ok = 0; | |
6407 | break; | |
6408 | ||
4ee9c684 | 6409 | case COMP_SELECT: |
1de1b1a9 | 6410 | case COMP_SELECT_TYPE: |
4ee9c684 | 6411 | *st = ST_END_SELECT; |
6412 | target = " select"; | |
c0985832 | 6413 | eos_ok = 0; |
4ee9c684 | 6414 | break; |
6415 | ||
6416 | case COMP_FORALL: | |
6417 | *st = ST_END_FORALL; | |
6418 | target = " forall"; | |
c0985832 | 6419 | eos_ok = 0; |
4ee9c684 | 6420 | break; |
6421 | ||
6422 | case COMP_WHERE: | |
6423 | *st = ST_END_WHERE; | |
6424 | target = " where"; | |
c0985832 | 6425 | eos_ok = 0; |
4ee9c684 | 6426 | break; |
6427 | ||
3b6a4b41 | 6428 | case COMP_ENUM: |
6429 | *st = ST_END_ENUM; | |
6430 | target = " enum"; | |
6431 | eos_ok = 0; | |
6432 | last_initializer = NULL; | |
6433 | set_enum_kind (); | |
6434 | gfc_free_enum_history (); | |
6435 | break; | |
6436 | ||
4ee9c684 | 6437 | default: |
6438 | gfc_error ("Unexpected END statement at %C"); | |
6439 | goto cleanup; | |
6440 | } | |
6441 | ||
8d779aef | 6442 | old_loc = gfc_current_locus; |
4ee9c684 | 6443 | if (gfc_match_eos () == MATCH_YES) |
6444 | { | |
4b20e9cf | 6445 | if (!eos_ok && (*st == ST_END_SUBROUTINE || *st == ST_END_FUNCTION)) |
6446 | { | |
60e19868 | 6447 | if (!gfc_notify_std (GFC_STD_F2008, "END statement " |
6448 | "instead of %s statement at %L", | |
4b8eb6ca | 6449 | abreviated_modproc_decl ? "END PROCEDURE" |
6450 | : gfc_ascii_statement(*st), &old_loc)) | |
4b20e9cf | 6451 | goto cleanup; |
6452 | } | |
6453 | else if (!eos_ok) | |
4ee9c684 | 6454 | { |
f6d0e37a | 6455 | /* We would have required END [something]. */ |
d197c9ee | 6456 | gfc_error ("%s statement expected at %L", |
6457 | gfc_ascii_statement (*st), &old_loc); | |
4ee9c684 | 6458 | goto cleanup; |
6459 | } | |
6460 | ||
6461 | return MATCH_YES; | |
6462 | } | |
6463 | ||
6464 | /* Verify that we've got the sort of end-block that we're expecting. */ | |
6465 | if (gfc_match (target) != MATCH_YES) | |
6466 | { | |
4b8eb6ca | 6467 | gfc_error ("Expecting %s statement at %L", abreviated_modproc_decl |
6468 | ? "END PROCEDURE" : gfc_ascii_statement(*st), &old_loc); | |
4ee9c684 | 6469 | goto cleanup; |
6470 | } | |
6471 | ||
8d779aef | 6472 | old_loc = gfc_current_locus; |
4ee9c684 | 6473 | /* If we're at the end, make sure a block name wasn't required. */ |
6474 | if (gfc_match_eos () == MATCH_YES) | |
6475 | { | |
6476 | ||
0d0ce415 | 6477 | if (*st != ST_ENDDO && *st != ST_ENDIF && *st != ST_END_SELECT |
c6cd3066 | 6478 | && *st != ST_END_FORALL && *st != ST_END_WHERE && *st != ST_END_BLOCK |
d18a512a | 6479 | && *st != ST_END_ASSOCIATE && *st != ST_END_CRITICAL) |
4ee9c684 | 6480 | return MATCH_YES; |
6481 | ||
6a7084d7 | 6482 | if (!block_name) |
4ee9c684 | 6483 | return MATCH_YES; |
6484 | ||
716da296 | 6485 | gfc_error ("Expected block name of %qs in %s statement at %L", |
8d779aef | 6486 | block_name, gfc_ascii_statement (*st), &old_loc); |
4ee9c684 | 6487 | |
6488 | return MATCH_ERROR; | |
6489 | } | |
6490 | ||
6491 | /* END INTERFACE has a special handler for its several possible endings. */ | |
6492 | if (*st == ST_END_INTERFACE) | |
6493 | return gfc_match_end_interface (); | |
6494 | ||
f6d0e37a | 6495 | /* We haven't hit the end of statement, so what is left must be an |
6496 | end-name. */ | |
4ee9c684 | 6497 | m = gfc_match_space (); |
6498 | if (m == MATCH_YES) | |
6499 | m = gfc_match_name (name); | |
6500 | ||
6501 | if (m == MATCH_NO) | |
6502 | gfc_error ("Expected terminating name at %C"); | |
6503 | if (m != MATCH_YES) | |
6504 | goto cleanup; | |
6505 | ||
6506 | if (block_name == NULL) | |
6507 | goto syntax; | |
6508 | ||
df8f279f | 6509 | /* We have to pick out the declared submodule name from the composite |
6510 | required by F2008:11.2.3 para 2, which ends in the declared name. */ | |
6511 | if (state == COMP_SUBMODULE) | |
6512 | block_name = strchr (block_name, '.') + 1; | |
6513 | ||
1e057e9b | 6514 | if (strcmp (name, block_name) != 0 && strcmp (block_name, "ppr@") != 0) |
4ee9c684 | 6515 | { |
716da296 | 6516 | gfc_error ("Expected label %qs for %s statement at %C", block_name, |
4ee9c684 | 6517 | gfc_ascii_statement (*st)); |
6518 | goto cleanup; | |
6519 | } | |
1e057e9b | 6520 | /* Procedure pointer as function result. */ |
6521 | else if (strcmp (block_name, "ppr@") == 0 | |
6522 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) != 0) | |
6523 | { | |
716da296 | 6524 | gfc_error ("Expected label %qs for %s statement at %C", |
1e057e9b | 6525 | gfc_current_block ()->ns->proc_name->name, |
6526 | gfc_ascii_statement (*st)); | |
6527 | goto cleanup; | |
6528 | } | |
4ee9c684 | 6529 | |
6530 | if (gfc_match_eos () == MATCH_YES) | |
6531 | return MATCH_YES; | |
6532 | ||
6533 | syntax: | |
6534 | gfc_syntax_error (*st); | |
6535 | ||
6536 | cleanup: | |
cbb9e6aa | 6537 | gfc_current_locus = old_loc; |
9e5e87d9 | 6538 | |
6539 | /* If we are missing an END BLOCK, we created a half-ready namespace. | |
6540 | Remove it from the parent namespace's sibling list. */ | |
6541 | ||
8097c1a6 | 6542 | while (state == COMP_BLOCK) |
9e5e87d9 | 6543 | { |
6544 | parent_ns = gfc_current_ns->parent; | |
6545 | ||
6546 | nsp = &(gfc_state_stack->previous->tail->ext.block.ns); | |
6547 | ||
6548 | prev_ns = NULL; | |
6549 | ns = *nsp; | |
6550 | while (ns) | |
6551 | { | |
6552 | if (ns == gfc_current_ns) | |
6553 | { | |
6554 | if (prev_ns == NULL) | |
6555 | *nsp = NULL; | |
6556 | else | |
6557 | prev_ns->sibling = ns->sibling; | |
6558 | } | |
6559 | prev_ns = ns; | |
6560 | ns = ns->sibling; | |
6561 | } | |
6562 | ||
6563 | gfc_free_namespace (gfc_current_ns); | |
6564 | gfc_current_ns = parent_ns; | |
8097c1a6 | 6565 | gfc_state_stack = gfc_state_stack->previous; |
6566 | state = gfc_current_state (); | |
9e5e87d9 | 6567 | } |
6568 | ||
4ee9c684 | 6569 | return MATCH_ERROR; |
6570 | } | |
6571 | ||
6572 | ||
6573 | ||
6574 | /***************** Attribute declaration statements ****************/ | |
6575 | ||
6576 | /* Set the attribute of a single variable. */ | |
6577 | ||
6578 | static match | |
6579 | attr_decl1 (void) | |
6580 | { | |
6581 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6582 | gfc_array_spec *as; | |
75e5ecf3 | 6583 | |
6584 | /* Workaround -Wmaybe-uninitialized false positive during | |
6585 | profiledbootstrap by initializing them. */ | |
6586 | gfc_symbol *sym = NULL; | |
4ee9c684 | 6587 | locus var_locus; |
6588 | match m; | |
6589 | ||
6590 | as = NULL; | |
6591 | ||
6592 | m = gfc_match_name (name); | |
6593 | if (m != MATCH_YES) | |
6594 | goto cleanup; | |
6595 | ||
36b0a1b0 | 6596 | if (find_special (name, &sym, false)) |
4ee9c684 | 6597 | return MATCH_ERROR; |
6598 | ||
60e19868 | 6599 | if (!check_function_name (name)) |
f3e89339 | 6600 | { |
6601 | m = MATCH_ERROR; | |
6602 | goto cleanup; | |
6603 | } | |
8db94b3b | 6604 | |
cbb9e6aa | 6605 | var_locus = gfc_current_locus; |
4ee9c684 | 6606 | |
6607 | /* Deal with possible array specification for certain attributes. */ | |
6608 | if (current_attr.dimension | |
aff518b0 | 6609 | || current_attr.codimension |
4ee9c684 | 6610 | || current_attr.allocatable |
6611 | || current_attr.pointer | |
6612 | || current_attr.target) | |
6613 | { | |
aff518b0 | 6614 | m = gfc_match_array_spec (&as, !current_attr.codimension, |
6615 | !current_attr.dimension | |
6616 | && !current_attr.pointer | |
6617 | && !current_attr.target); | |
4ee9c684 | 6618 | if (m == MATCH_ERROR) |
6619 | goto cleanup; | |
6620 | ||
6621 | if (current_attr.dimension && m == MATCH_NO) | |
6622 | { | |
1a9745d2 | 6623 | gfc_error ("Missing array specification at %L in DIMENSION " |
6624 | "statement", &var_locus); | |
4ee9c684 | 6625 | m = MATCH_ERROR; |
6626 | goto cleanup; | |
6627 | } | |
6628 | ||
13aebeb0 | 6629 | if (current_attr.dimension && sym->value) |
6630 | { | |
6631 | gfc_error ("Dimensions specified for %s at %L after its " | |
6632 | "initialisation", sym->name, &var_locus); | |
6633 | m = MATCH_ERROR; | |
6634 | goto cleanup; | |
6635 | } | |
6636 | ||
aff518b0 | 6637 | if (current_attr.codimension && m == MATCH_NO) |
6638 | { | |
6639 | gfc_error ("Missing array specification at %L in CODIMENSION " | |
6640 | "statement", &var_locus); | |
6641 | m = MATCH_ERROR; | |
6642 | goto cleanup; | |
6643 | } | |
6644 | ||
4ee9c684 | 6645 | if ((current_attr.allocatable || current_attr.pointer) |
6646 | && (m == MATCH_YES) && (as->type != AS_DEFERRED)) | |
6647 | { | |
1a9745d2 | 6648 | gfc_error ("Array specification must be deferred at %L", &var_locus); |
4ee9c684 | 6649 | m = MATCH_ERROR; |
6650 | goto cleanup; | |
6651 | } | |
6652 | } | |
6653 | ||
b3704193 | 6654 | /* Update symbol table. DIMENSION attribute is set in |
6655 | gfc_set_array_spec(). For CLASS variables, this must be applied | |
607ae689 | 6656 | to the first component, or '_data' field. */ |
a33fbb6f | 6657 | if (sym->ts.type == BT_CLASS && sym->ts.u.derived->attr.is_class) |
4ee9c684 | 6658 | { |
60e19868 | 6659 | if (!gfc_copy_attr (&CLASS_DATA(sym)->attr, ¤t_attr, &var_locus)) |
b3704193 | 6660 | { |
6661 | m = MATCH_ERROR; | |
6662 | goto cleanup; | |
6663 | } | |
b3704193 | 6664 | } |
6665 | else | |
6666 | { | |
aff518b0 | 6667 | if (current_attr.dimension == 0 && current_attr.codimension == 0 |
60e19868 | 6668 | && !gfc_copy_attr (&sym->attr, ¤t_attr, &var_locus)) |
b3704193 | 6669 | { |
6670 | m = MATCH_ERROR; | |
6671 | goto cleanup; | |
6672 | } | |
4ee9c684 | 6673 | } |
8db94b3b | 6674 | |
fa102e56 | 6675 | if (sym->ts.type == BT_CLASS |
e8393d49 | 6676 | && !gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as)) |
29dae2bf | 6677 | { |
6678 | m = MATCH_ERROR; | |
6679 | goto cleanup; | |
6680 | } | |
4ee9c684 | 6681 | |
60e19868 | 6682 | if (!gfc_set_array_spec (sym, as, &var_locus)) |
4ee9c684 | 6683 | { |
6684 | m = MATCH_ERROR; | |
6685 | goto cleanup; | |
6686 | } | |
e14bee04 | 6687 | |
b549d2a5 | 6688 | if (sym->attr.cray_pointee && sym->as != NULL) |
6689 | { | |
6690 | /* Fix the array spec. */ | |
8db94b3b | 6691 | m = gfc_mod_pointee_as (sym->as); |
b549d2a5 | 6692 | if (m == MATCH_ERROR) |
6693 | goto cleanup; | |
6694 | } | |
4ee9c684 | 6695 | |
60e19868 | 6696 | if (!gfc_add_attribute (&sym->attr, &var_locus)) |
14efb9b7 | 6697 | { |
6698 | m = MATCH_ERROR; | |
6699 | goto cleanup; | |
6700 | } | |
6701 | ||
4ee9c684 | 6702 | if ((current_attr.external || current_attr.intrinsic) |
6703 | && sym->attr.flavor != FL_PROCEDURE | |
60e19868 | 6704 | && !gfc_add_flavor (&sym->attr, FL_PROCEDURE, sym->name, NULL)) |
4ee9c684 | 6705 | { |
6706 | m = MATCH_ERROR; | |
6707 | goto cleanup; | |
6708 | } | |
6709 | ||
1e057e9b | 6710 | add_hidden_procptr_result (sym); |
6711 | ||
4ee9c684 | 6712 | return MATCH_YES; |
6713 | ||
6714 | cleanup: | |
6715 | gfc_free_array_spec (as); | |
6716 | return m; | |
6717 | } | |
6718 | ||
6719 | ||
6720 | /* Generic attribute declaration subroutine. Used for attributes that | |
6721 | just have a list of names. */ | |
6722 | ||
6723 | static match | |
6724 | attr_decl (void) | |
6725 | { | |
6726 | match m; | |
6727 | ||
6728 | /* Gobble the optional double colon, by simply ignoring the result | |
6729 | of gfc_match(). */ | |
6730 | gfc_match (" ::"); | |
6731 | ||
6732 | for (;;) | |
6733 | { | |
6734 | m = attr_decl1 (); | |
6735 | if (m != MATCH_YES) | |
6736 | break; | |
6737 | ||
6738 | if (gfc_match_eos () == MATCH_YES) | |
6739 | { | |
6740 | m = MATCH_YES; | |
6741 | break; | |
6742 | } | |
6743 | ||
6744 | if (gfc_match_char (',') != MATCH_YES) | |
6745 | { | |
6746 | gfc_error ("Unexpected character in variable list at %C"); | |
6747 | m = MATCH_ERROR; | |
6748 | break; | |
6749 | } | |
6750 | } | |
6751 | ||
6752 | return m; | |
6753 | } | |
6754 | ||
6755 | ||
b549d2a5 | 6756 | /* This routine matches Cray Pointer declarations of the form: |
6757 | pointer ( <pointer>, <pointee> ) | |
6758 | or | |
e14bee04 | 6759 | pointer ( <pointer1>, <pointee1> ), ( <pointer2>, <pointee2> ), ... |
6760 | The pointer, if already declared, should be an integer. Otherwise, we | |
b549d2a5 | 6761 | set it as BT_INTEGER with kind gfc_index_integer_kind. The pointee may |
6762 | be either a scalar, or an array declaration. No space is allocated for | |
e14bee04 | 6763 | the pointee. For the statement |
b549d2a5 | 6764 | pointer (ipt, ar(10)) |
6765 | any subsequent uses of ar will be translated (in C-notation) as | |
e14bee04 | 6766 | ar(i) => ((<type> *) ipt)(i) |
b7bf3f81 | 6767 | After gimplification, pointee variable will disappear in the code. */ |
b549d2a5 | 6768 | |
6769 | static match | |
6770 | cray_pointer_decl (void) | |
6771 | { | |
6772 | match m; | |
aff518b0 | 6773 | gfc_array_spec *as = NULL; |
b549d2a5 | 6774 | gfc_symbol *cptr; /* Pointer symbol. */ |
6775 | gfc_symbol *cpte; /* Pointee symbol. */ | |
6776 | locus var_locus; | |
6777 | bool done = false; | |
6778 | ||
6779 | while (!done) | |
6780 | { | |
6781 | if (gfc_match_char ('(') != MATCH_YES) | |
6782 | { | |
0d2b3c9c | 6783 | gfc_error ("Expected %<(%> at %C"); |
e14bee04 | 6784 | return MATCH_ERROR; |
b549d2a5 | 6785 | } |
e14bee04 | 6786 | |
b549d2a5 | 6787 | /* Match pointer. */ |
6788 | var_locus = gfc_current_locus; | |
6789 | gfc_clear_attr (¤t_attr); | |
6790 | gfc_add_cray_pointer (¤t_attr, &var_locus); | |
6791 | current_ts.type = BT_INTEGER; | |
6792 | current_ts.kind = gfc_index_integer_kind; | |
6793 | ||
e14bee04 | 6794 | m = gfc_match_symbol (&cptr, 0); |
b549d2a5 | 6795 | if (m != MATCH_YES) |
6796 | { | |
6797 | gfc_error ("Expected variable name at %C"); | |
6798 | return m; | |
6799 | } | |
e14bee04 | 6800 | |
60e19868 | 6801 | if (!gfc_add_cray_pointer (&cptr->attr, &var_locus)) |
b549d2a5 | 6802 | return MATCH_ERROR; |
6803 | ||
e14bee04 | 6804 | gfc_set_sym_referenced (cptr); |
b549d2a5 | 6805 | |
6806 | if (cptr->ts.type == BT_UNKNOWN) /* Override the type, if necessary. */ | |
6807 | { | |
6808 | cptr->ts.type = BT_INTEGER; | |
e14bee04 | 6809 | cptr->ts.kind = gfc_index_integer_kind; |
b549d2a5 | 6810 | } |
6811 | else if (cptr->ts.type != BT_INTEGER) | |
6812 | { | |
7698a624 | 6813 | gfc_error ("Cray pointer at %C must be an integer"); |
b549d2a5 | 6814 | return MATCH_ERROR; |
6815 | } | |
6816 | else if (cptr->ts.kind < gfc_index_integer_kind) | |
6f521718 | 6817 | gfc_warning (0, "Cray pointer at %C has %d bytes of precision;" |
7698a624 | 6818 | " memory addresses require %d bytes", |
1a9745d2 | 6819 | cptr->ts.kind, gfc_index_integer_kind); |
b549d2a5 | 6820 | |
6821 | if (gfc_match_char (',') != MATCH_YES) | |
6822 | { | |
6823 | gfc_error ("Expected \",\" at %C"); | |
e14bee04 | 6824 | return MATCH_ERROR; |
b549d2a5 | 6825 | } |
6826 | ||
e14bee04 | 6827 | /* Match Pointee. */ |
b549d2a5 | 6828 | var_locus = gfc_current_locus; |
6829 | gfc_clear_attr (¤t_attr); | |
6830 | gfc_add_cray_pointee (¤t_attr, &var_locus); | |
6831 | current_ts.type = BT_UNKNOWN; | |
6832 | current_ts.kind = 0; | |
6833 | ||
6834 | m = gfc_match_symbol (&cpte, 0); | |
6835 | if (m != MATCH_YES) | |
6836 | { | |
6837 | gfc_error ("Expected variable name at %C"); | |
6838 | return m; | |
6839 | } | |
e14bee04 | 6840 | |
b549d2a5 | 6841 | /* Check for an optional array spec. */ |
aff518b0 | 6842 | m = gfc_match_array_spec (&as, true, false); |
b549d2a5 | 6843 | if (m == MATCH_ERROR) |
6844 | { | |
6845 | gfc_free_array_spec (as); | |
6846 | return m; | |
6847 | } | |
6848 | else if (m == MATCH_NO) | |
6849 | { | |
6850 | gfc_free_array_spec (as); | |
6851 | as = NULL; | |
8db94b3b | 6852 | } |
b549d2a5 | 6853 | |
60e19868 | 6854 | if (!gfc_add_cray_pointee (&cpte->attr, &var_locus)) |
b549d2a5 | 6855 | return MATCH_ERROR; |
6856 | ||
6857 | gfc_set_sym_referenced (cpte); | |
6858 | ||
6859 | if (cpte->as == NULL) | |
6860 | { | |
60e19868 | 6861 | if (!gfc_set_array_spec (cpte, as, &var_locus)) |
b549d2a5 | 6862 | gfc_internal_error ("Couldn't set Cray pointee array spec."); |
6863 | } | |
6864 | else if (as != NULL) | |
6865 | { | |
7698a624 | 6866 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
b549d2a5 | 6867 | gfc_free_array_spec (as); |
6868 | return MATCH_ERROR; | |
6869 | } | |
8db94b3b | 6870 | |
b549d2a5 | 6871 | as = NULL; |
8db94b3b | 6872 | |
b549d2a5 | 6873 | if (cpte->as != NULL) |
6874 | { | |
6875 | /* Fix array spec. */ | |
6876 | m = gfc_mod_pointee_as (cpte->as); | |
6877 | if (m == MATCH_ERROR) | |
6878 | return m; | |
8db94b3b | 6879 | } |
6880 | ||
b549d2a5 | 6881 | /* Point the Pointee at the Pointer. */ |
b7bf3f81 | 6882 | cpte->cp_pointer = cptr; |
b549d2a5 | 6883 | |
6884 | if (gfc_match_char (')') != MATCH_YES) | |
6885 | { | |
6886 | gfc_error ("Expected \")\" at %C"); | |
8db94b3b | 6887 | return MATCH_ERROR; |
b549d2a5 | 6888 | } |
6889 | m = gfc_match_char (','); | |
6890 | if (m != MATCH_YES) | |
6891 | done = true; /* Stop searching for more declarations. */ | |
6892 | ||
6893 | } | |
8db94b3b | 6894 | |
b549d2a5 | 6895 | if (m == MATCH_ERROR /* Failed when trying to find ',' above. */ |
6896 | || gfc_match_eos () != MATCH_YES) | |
6897 | { | |
0d2b3c9c | 6898 | gfc_error ("Expected %<,%> or end of statement at %C"); |
b549d2a5 | 6899 | return MATCH_ERROR; |
6900 | } | |
6901 | return MATCH_YES; | |
6902 | } | |
6903 | ||
6904 | ||
4ee9c684 | 6905 | match |
6906 | gfc_match_external (void) | |
6907 | { | |
6908 | ||
6909 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 6910 | current_attr.external = 1; |
4ee9c684 | 6911 | |
6912 | return attr_decl (); | |
6913 | } | |
6914 | ||
6915 | ||
4ee9c684 | 6916 | match |
6917 | gfc_match_intent (void) | |
6918 | { | |
6919 | sym_intent intent; | |
6920 | ||
6a7084d7 | 6921 | /* This is not allowed within a BLOCK construct! */ |
6922 | if (gfc_current_state () == COMP_BLOCK) | |
6923 | { | |
6924 | gfc_error ("INTENT is not allowed inside of BLOCK at %C"); | |
6925 | return MATCH_ERROR; | |
6926 | } | |
6927 | ||
4ee9c684 | 6928 | intent = match_intent_spec (); |
6929 | if (intent == INTENT_UNKNOWN) | |
6930 | return MATCH_ERROR; | |
6931 | ||
6932 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 6933 | current_attr.intent = intent; |
4ee9c684 | 6934 | |
6935 | return attr_decl (); | |
6936 | } | |
6937 | ||
6938 | ||
6939 | match | |
6940 | gfc_match_intrinsic (void) | |
6941 | { | |
6942 | ||
6943 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 6944 | current_attr.intrinsic = 1; |
4ee9c684 | 6945 | |
6946 | return attr_decl (); | |
6947 | } | |
6948 | ||
6949 | ||
6950 | match | |
6951 | gfc_match_optional (void) | |
6952 | { | |
6a7084d7 | 6953 | /* This is not allowed within a BLOCK construct! */ |
6954 | if (gfc_current_state () == COMP_BLOCK) | |
6955 | { | |
6956 | gfc_error ("OPTIONAL is not allowed inside of BLOCK at %C"); | |
6957 | return MATCH_ERROR; | |
6958 | } | |
4ee9c684 | 6959 | |
6960 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 6961 | current_attr.optional = 1; |
4ee9c684 | 6962 | |
6963 | return attr_decl (); | |
6964 | } | |
6965 | ||
6966 | ||
6967 | match | |
6968 | gfc_match_pointer (void) | |
6969 | { | |
b549d2a5 | 6970 | gfc_gobble_whitespace (); |
e0be6f02 | 6971 | if (gfc_peek_ascii_char () == '(') |
b549d2a5 | 6972 | { |
829d7a08 | 6973 | if (!flag_cray_pointer) |
b549d2a5 | 6974 | { |
1a9745d2 | 6975 | gfc_error ("Cray pointer declaration at %C requires -fcray-pointer " |
6976 | "flag"); | |
b549d2a5 | 6977 | return MATCH_ERROR; |
6978 | } | |
6979 | return cray_pointer_decl (); | |
6980 | } | |
6981 | else | |
6982 | { | |
6983 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 6984 | current_attr.pointer = 1; |
8db94b3b | 6985 | |
b549d2a5 | 6986 | return attr_decl (); |
6987 | } | |
4ee9c684 | 6988 | } |
6989 | ||
6990 | ||
6991 | match | |
6992 | gfc_match_allocatable (void) | |
6993 | { | |
4ee9c684 | 6994 | gfc_clear_attr (¤t_attr); |
14efb9b7 | 6995 | current_attr.allocatable = 1; |
4ee9c684 | 6996 | |
6997 | return attr_decl (); | |
6998 | } | |
6999 | ||
7000 | ||
aff518b0 | 7001 | match |
7002 | gfc_match_codimension (void) | |
7003 | { | |
7004 | gfc_clear_attr (¤t_attr); | |
7005 | current_attr.codimension = 1; | |
7006 | ||
7007 | return attr_decl (); | |
7008 | } | |
7009 | ||
7010 | ||
b3c3927c | 7011 | match |
7012 | gfc_match_contiguous (void) | |
7013 | { | |
60e19868 | 7014 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS statement at %C")) |
b3c3927c | 7015 | return MATCH_ERROR; |
7016 | ||
7017 | gfc_clear_attr (¤t_attr); | |
7018 | current_attr.contiguous = 1; | |
7019 | ||
7020 | return attr_decl (); | |
7021 | } | |
7022 | ||
7023 | ||
4ee9c684 | 7024 | match |
7025 | gfc_match_dimension (void) | |
7026 | { | |
4ee9c684 | 7027 | gfc_clear_attr (¤t_attr); |
14efb9b7 | 7028 | current_attr.dimension = 1; |
4ee9c684 | 7029 | |
7030 | return attr_decl (); | |
7031 | } | |
7032 | ||
7033 | ||
7034 | match | |
7035 | gfc_match_target (void) | |
7036 | { | |
4ee9c684 | 7037 | gfc_clear_attr (¤t_attr); |
14efb9b7 | 7038 | current_attr.target = 1; |
4ee9c684 | 7039 | |
7040 | return attr_decl (); | |
7041 | } | |
7042 | ||
7043 | ||
7044 | /* Match the list of entities being specified in a PUBLIC or PRIVATE | |
7045 | statement. */ | |
7046 | ||
7047 | static match | |
7048 | access_attr_decl (gfc_statement st) | |
7049 | { | |
7050 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7051 | interface_type type; | |
7052 | gfc_user_op *uop; | |
c2958b6b | 7053 | gfc_symbol *sym, *dt_sym; |
dcb1b019 | 7054 | gfc_intrinsic_op op; |
4ee9c684 | 7055 | match m; |
7056 | ||
7057 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7058 | goto done; | |
7059 | ||
7060 | for (;;) | |
7061 | { | |
dcb1b019 | 7062 | m = gfc_match_generic_spec (&type, name, &op); |
4ee9c684 | 7063 | if (m == MATCH_NO) |
7064 | goto syntax; | |
7065 | if (m == MATCH_ERROR) | |
7066 | return MATCH_ERROR; | |
7067 | ||
7068 | switch (type) | |
7069 | { | |
7070 | case INTERFACE_NAMELESS: | |
94fa7146 | 7071 | case INTERFACE_ABSTRACT: |
4ee9c684 | 7072 | goto syntax; |
7073 | ||
7074 | case INTERFACE_GENERIC: | |
7075 | if (gfc_get_symbol (name, NULL, &sym)) | |
7076 | goto done; | |
7077 | ||
60e19868 | 7078 | if (!gfc_add_access (&sym->attr, |
7079 | (st == ST_PUBLIC) | |
7080 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
7081 | sym->name, NULL)) | |
4ee9c684 | 7082 | return MATCH_ERROR; |
7083 | ||
c2958b6b | 7084 | if (sym->attr.generic && (dt_sym = gfc_find_dt_in_generic (sym)) |
60e19868 | 7085 | && !gfc_add_access (&dt_sym->attr, |
7086 | (st == ST_PUBLIC) | |
7087 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
7088 | sym->name, NULL)) | |
c2958b6b | 7089 | return MATCH_ERROR; |
7090 | ||
4ee9c684 | 7091 | break; |
7092 | ||
7093 | case INTERFACE_INTRINSIC_OP: | |
dcb1b019 | 7094 | if (gfc_current_ns->operator_access[op] == ACCESS_UNKNOWN) |
4ee9c684 | 7095 | { |
0c482c1d | 7096 | gfc_intrinsic_op other_op; |
7097 | ||
dcb1b019 | 7098 | gfc_current_ns->operator_access[op] = |
4ee9c684 | 7099 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; |
0c482c1d | 7100 | |
7101 | /* Handle the case if there is another op with the same | |
7102 | function, for INTRINSIC_EQ vs. INTRINSIC_EQ_OS and so on. */ | |
7103 | other_op = gfc_equivalent_op (op); | |
7104 | ||
7105 | if (other_op != INTRINSIC_NONE) | |
7106 | gfc_current_ns->operator_access[other_op] = | |
7107 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
7108 | ||
4ee9c684 | 7109 | } |
7110 | else | |
7111 | { | |
7112 | gfc_error ("Access specification of the %s operator at %C has " | |
dcb1b019 | 7113 | "already been specified", gfc_op2string (op)); |
4ee9c684 | 7114 | goto done; |
7115 | } | |
7116 | ||
7117 | break; | |
7118 | ||
7119 | case INTERFACE_USER_OP: | |
7120 | uop = gfc_get_uop (name); | |
7121 | ||
7122 | if (uop->access == ACCESS_UNKNOWN) | |
7123 | { | |
1a9745d2 | 7124 | uop->access = (st == ST_PUBLIC) |
7125 | ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
4ee9c684 | 7126 | } |
7127 | else | |
7128 | { | |
1a9745d2 | 7129 | gfc_error ("Access specification of the .%s. operator at %C " |
7130 | "has already been specified", sym->name); | |
4ee9c684 | 7131 | goto done; |
7132 | } | |
7133 | ||
7134 | break; | |
7135 | } | |
7136 | ||
7137 | if (gfc_match_char (',') == MATCH_NO) | |
7138 | break; | |
7139 | } | |
7140 | ||
7141 | if (gfc_match_eos () != MATCH_YES) | |
7142 | goto syntax; | |
7143 | return MATCH_YES; | |
7144 | ||
7145 | syntax: | |
7146 | gfc_syntax_error (st); | |
7147 | ||
7148 | done: | |
7149 | return MATCH_ERROR; | |
7150 | } | |
7151 | ||
7152 | ||
3ea52af3 | 7153 | match |
7154 | gfc_match_protected (void) | |
7155 | { | |
7156 | gfc_symbol *sym; | |
7157 | match m; | |
7158 | ||
54c0257b | 7159 | if (!gfc_current_ns->proc_name |
7160 | || gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
3ea52af3 | 7161 | { |
7162 | gfc_error ("PROTECTED at %C only allowed in specification " | |
7163 | "part of a module"); | |
7164 | return MATCH_ERROR; | |
7165 | ||
7166 | } | |
7167 | ||
60e19868 | 7168 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED statement at %C")) |
3ea52af3 | 7169 | return MATCH_ERROR; |
7170 | ||
7171 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7172 | { | |
7173 | return MATCH_ERROR; | |
7174 | } | |
7175 | ||
7176 | if (gfc_match_eos () == MATCH_YES) | |
7177 | goto syntax; | |
7178 | ||
7179 | for(;;) | |
7180 | { | |
7181 | m = gfc_match_symbol (&sym, 0); | |
7182 | switch (m) | |
7183 | { | |
7184 | case MATCH_YES: | |
60e19868 | 7185 | if (!gfc_add_protected (&sym->attr, sym->name, &gfc_current_locus)) |
3ea52af3 | 7186 | return MATCH_ERROR; |
7187 | goto next_item; | |
7188 | ||
7189 | case MATCH_NO: | |
7190 | break; | |
7191 | ||
7192 | case MATCH_ERROR: | |
7193 | return MATCH_ERROR; | |
7194 | } | |
7195 | ||
7196 | next_item: | |
7197 | if (gfc_match_eos () == MATCH_YES) | |
7198 | break; | |
7199 | if (gfc_match_char (',') != MATCH_YES) | |
7200 | goto syntax; | |
7201 | } | |
7202 | ||
7203 | return MATCH_YES; | |
7204 | ||
7205 | syntax: | |
7206 | gfc_error ("Syntax error in PROTECTED statement at %C"); | |
7207 | return MATCH_ERROR; | |
7208 | } | |
7209 | ||
7210 | ||
a0527218 | 7211 | /* The PRIVATE statement is a bit weird in that it can be an attribute |
69b1505f | 7212 | declaration, but also works as a standalone statement inside of a |
4ee9c684 | 7213 | type declaration or a module. */ |
7214 | ||
7215 | match | |
1a9745d2 | 7216 | gfc_match_private (gfc_statement *st) |
4ee9c684 | 7217 | { |
7218 | ||
7219 | if (gfc_match ("private") != MATCH_YES) | |
7220 | return MATCH_NO; | |
7221 | ||
e14bee04 | 7222 | if (gfc_current_state () != COMP_MODULE |
7fd88f6e | 7223 | && !(gfc_current_state () == COMP_DERIVED |
7224 | && gfc_state_stack->previous | |
7225 | && gfc_state_stack->previous->state == COMP_MODULE) | |
7226 | && !(gfc_current_state () == COMP_DERIVED_CONTAINS | |
7227 | && gfc_state_stack->previous && gfc_state_stack->previous->previous | |
7228 | && gfc_state_stack->previous->previous->state == COMP_MODULE)) | |
e14bee04 | 7229 | { |
7230 | gfc_error ("PRIVATE statement at %C is only allowed in the " | |
7231 | "specification part of a module"); | |
7232 | return MATCH_ERROR; | |
7233 | } | |
7234 | ||
4ee9c684 | 7235 | if (gfc_current_state () == COMP_DERIVED) |
7236 | { | |
7237 | if (gfc_match_eos () == MATCH_YES) | |
7238 | { | |
7239 | *st = ST_PRIVATE; | |
7240 | return MATCH_YES; | |
7241 | } | |
7242 | ||
7243 | gfc_syntax_error (ST_PRIVATE); | |
7244 | return MATCH_ERROR; | |
7245 | } | |
7246 | ||
7247 | if (gfc_match_eos () == MATCH_YES) | |
7248 | { | |
7249 | *st = ST_PRIVATE; | |
7250 | return MATCH_YES; | |
7251 | } | |
7252 | ||
7253 | *st = ST_ATTR_DECL; | |
7254 | return access_attr_decl (ST_PRIVATE); | |
7255 | } | |
7256 | ||
7257 | ||
7258 | match | |
1a9745d2 | 7259 | gfc_match_public (gfc_statement *st) |
4ee9c684 | 7260 | { |
7261 | ||
7262 | if (gfc_match ("public") != MATCH_YES) | |
7263 | return MATCH_NO; | |
7264 | ||
e14bee04 | 7265 | if (gfc_current_state () != COMP_MODULE) |
7266 | { | |
7267 | gfc_error ("PUBLIC statement at %C is only allowed in the " | |
7268 | "specification part of a module"); | |
7269 | return MATCH_ERROR; | |
7270 | } | |
7271 | ||
4ee9c684 | 7272 | if (gfc_match_eos () == MATCH_YES) |
7273 | { | |
7274 | *st = ST_PUBLIC; | |
7275 | return MATCH_YES; | |
7276 | } | |
7277 | ||
7278 | *st = ST_ATTR_DECL; | |
7279 | return access_attr_decl (ST_PUBLIC); | |
7280 | } | |
7281 | ||
7282 | ||
7283 | /* Workhorse for gfc_match_parameter. */ | |
7284 | ||
7285 | static match | |
7286 | do_parm (void) | |
7287 | { | |
7288 | gfc_symbol *sym; | |
7289 | gfc_expr *init; | |
7290 | match m; | |
60e19868 | 7291 | bool t; |
4ee9c684 | 7292 | |
7293 | m = gfc_match_symbol (&sym, 0); | |
7294 | if (m == MATCH_NO) | |
7295 | gfc_error ("Expected variable name at %C in PARAMETER statement"); | |
7296 | ||
7297 | if (m != MATCH_YES) | |
7298 | return m; | |
7299 | ||
7300 | if (gfc_match_char ('=') == MATCH_NO) | |
7301 | { | |
7302 | gfc_error ("Expected = sign in PARAMETER statement at %C"); | |
7303 | return MATCH_ERROR; | |
7304 | } | |
7305 | ||
7306 | m = gfc_match_init_expr (&init); | |
7307 | if (m == MATCH_NO) | |
7308 | gfc_error ("Expected expression at %C in PARAMETER statement"); | |
7309 | if (m != MATCH_YES) | |
7310 | return m; | |
7311 | ||
7312 | if (sym->ts.type == BT_UNKNOWN | |
60e19868 | 7313 | && !gfc_set_default_type (sym, 1, NULL)) |
4ee9c684 | 7314 | { |
7315 | m = MATCH_ERROR; | |
7316 | goto cleanup; | |
7317 | } | |
7318 | ||
60e19868 | 7319 | if (!gfc_check_assign_symbol (sym, NULL, init) |
7320 | || !gfc_add_flavor (&sym->attr, FL_PARAMETER, sym->name, NULL)) | |
4ee9c684 | 7321 | { |
7322 | m = MATCH_ERROR; | |
7323 | goto cleanup; | |
7324 | } | |
7325 | ||
13aebeb0 | 7326 | if (sym->value) |
7327 | { | |
7328 | gfc_error ("Initializing already initialized variable at %C"); | |
7329 | m = MATCH_ERROR; | |
7330 | goto cleanup; | |
7331 | } | |
7332 | ||
f16404e3 | 7333 | t = add_init_expr_to_sym (sym->name, &init, &gfc_current_locus); |
60e19868 | 7334 | return (t) ? MATCH_YES : MATCH_ERROR; |
4ee9c684 | 7335 | |
7336 | cleanup: | |
7337 | gfc_free_expr (init); | |
7338 | return m; | |
7339 | } | |
7340 | ||
7341 | ||
7342 | /* Match a parameter statement, with the weird syntax that these have. */ | |
7343 | ||
7344 | match | |
7345 | gfc_match_parameter (void) | |
7346 | { | |
7347 | match m; | |
7348 | ||
7349 | if (gfc_match_char ('(') == MATCH_NO) | |
7350 | return MATCH_NO; | |
7351 | ||
7352 | for (;;) | |
7353 | { | |
7354 | m = do_parm (); | |
7355 | if (m != MATCH_YES) | |
7356 | break; | |
7357 | ||
7358 | if (gfc_match (" )%t") == MATCH_YES) | |
7359 | break; | |
7360 | ||
7361 | if (gfc_match_char (',') != MATCH_YES) | |
7362 | { | |
7363 | gfc_error ("Unexpected characters in PARAMETER statement at %C"); | |
7364 | m = MATCH_ERROR; | |
7365 | break; | |
7366 | } | |
7367 | } | |
7368 | ||
7369 | return m; | |
7370 | } | |
7371 | ||
7372 | ||
7373 | /* Save statements have a special syntax. */ | |
7374 | ||
7375 | match | |
7376 | gfc_match_save (void) | |
7377 | { | |
82f5ee13 | 7378 | char n[GFC_MAX_SYMBOL_LEN+1]; |
7379 | gfc_common_head *c; | |
4ee9c684 | 7380 | gfc_symbol *sym; |
7381 | match m; | |
7382 | ||
7383 | if (gfc_match_eos () == MATCH_YES) | |
7384 | { | |
7385 | if (gfc_current_ns->seen_save) | |
7386 | { | |
60e19868 | 7387 | if (!gfc_notify_std (GFC_STD_LEGACY, "Blanket SAVE statement at %C " |
7388 | "follows previous SAVE statement")) | |
76e82f95 | 7389 | return MATCH_ERROR; |
4ee9c684 | 7390 | } |
7391 | ||
7392 | gfc_current_ns->save_all = gfc_current_ns->seen_save = 1; | |
7393 | return MATCH_YES; | |
7394 | } | |
7395 | ||
7396 | if (gfc_current_ns->save_all) | |
7397 | { | |
60e19868 | 7398 | if (!gfc_notify_std (GFC_STD_LEGACY, "SAVE statement at %C follows " |
7399 | "blanket SAVE statement")) | |
76e82f95 | 7400 | return MATCH_ERROR; |
4ee9c684 | 7401 | } |
7402 | ||
7403 | gfc_match (" ::"); | |
7404 | ||
7405 | for (;;) | |
7406 | { | |
7407 | m = gfc_match_symbol (&sym, 0); | |
7408 | switch (m) | |
7409 | { | |
7410 | case MATCH_YES: | |
60e19868 | 7411 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, |
7412 | &gfc_current_locus)) | |
4ee9c684 | 7413 | return MATCH_ERROR; |
7414 | goto next_item; | |
7415 | ||
7416 | case MATCH_NO: | |
7417 | break; | |
7418 | ||
7419 | case MATCH_ERROR: | |
7420 | return MATCH_ERROR; | |
7421 | } | |
7422 | ||
82f5ee13 | 7423 | m = gfc_match (" / %n /", &n); |
4ee9c684 | 7424 | if (m == MATCH_ERROR) |
7425 | return MATCH_ERROR; | |
7426 | if (m == MATCH_NO) | |
7427 | goto syntax; | |
7428 | ||
403ddc45 | 7429 | c = gfc_get_common (n, 0); |
82f5ee13 | 7430 | c->saved = 1; |
7431 | ||
4ee9c684 | 7432 | gfc_current_ns->seen_save = 1; |
7433 | ||
7434 | next_item: | |
7435 | if (gfc_match_eos () == MATCH_YES) | |
7436 | break; | |
7437 | if (gfc_match_char (',') != MATCH_YES) | |
7438 | goto syntax; | |
7439 | } | |
7440 | ||
7441 | return MATCH_YES; | |
7442 | ||
7443 | syntax: | |
7444 | gfc_error ("Syntax error in SAVE statement at %C"); | |
7445 | return MATCH_ERROR; | |
7446 | } | |
7447 | ||
7448 | ||
8f6339b6 | 7449 | match |
7450 | gfc_match_value (void) | |
7451 | { | |
7452 | gfc_symbol *sym; | |
7453 | match m; | |
7454 | ||
6a7084d7 | 7455 | /* This is not allowed within a BLOCK construct! */ |
7456 | if (gfc_current_state () == COMP_BLOCK) | |
7457 | { | |
7458 | gfc_error ("VALUE is not allowed inside of BLOCK at %C"); | |
7459 | return MATCH_ERROR; | |
7460 | } | |
7461 | ||
60e19868 | 7462 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE statement at %C")) |
8f6339b6 | 7463 | return MATCH_ERROR; |
7464 | ||
7465 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7466 | { | |
7467 | return MATCH_ERROR; | |
7468 | } | |
7469 | ||
7470 | if (gfc_match_eos () == MATCH_YES) | |
7471 | goto syntax; | |
7472 | ||
7473 | for(;;) | |
7474 | { | |
7475 | m = gfc_match_symbol (&sym, 0); | |
7476 | switch (m) | |
7477 | { | |
7478 | case MATCH_YES: | |
60e19868 | 7479 | if (!gfc_add_value (&sym->attr, sym->name, &gfc_current_locus)) |
8f6339b6 | 7480 | return MATCH_ERROR; |
7481 | goto next_item; | |
7482 | ||
7483 | case MATCH_NO: | |
7484 | break; | |
7485 | ||
7486 | case MATCH_ERROR: | |
7487 | return MATCH_ERROR; | |
7488 | } | |
7489 | ||
7490 | next_item: | |
7491 | if (gfc_match_eos () == MATCH_YES) | |
7492 | break; | |
7493 | if (gfc_match_char (',') != MATCH_YES) | |
7494 | goto syntax; | |
7495 | } | |
7496 | ||
7497 | return MATCH_YES; | |
7498 | ||
7499 | syntax: | |
7500 | gfc_error ("Syntax error in VALUE statement at %C"); | |
7501 | return MATCH_ERROR; | |
7502 | } | |
7503 | ||
f6d0e37a | 7504 | |
ef814c81 | 7505 | match |
7506 | gfc_match_volatile (void) | |
7507 | { | |
7508 | gfc_symbol *sym; | |
7509 | match m; | |
7510 | ||
60e19868 | 7511 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE statement at %C")) |
ef814c81 | 7512 | return MATCH_ERROR; |
7513 | ||
7514 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7515 | { | |
7516 | return MATCH_ERROR; | |
7517 | } | |
7518 | ||
7519 | if (gfc_match_eos () == MATCH_YES) | |
7520 | goto syntax; | |
7521 | ||
7522 | for(;;) | |
7523 | { | |
8db94b3b | 7524 | /* VOLATILE is special because it can be added to host-associated |
293d72e0 | 7525 | symbols locally. Except for coarrays. */ |
2f241857 | 7526 | m = gfc_match_symbol (&sym, 1); |
ef814c81 | 7527 | switch (m) |
7528 | { | |
7529 | case MATCH_YES: | |
aff518b0 | 7530 | /* F2008, C560+C561. VOLATILE for host-/use-associated variable or |
7531 | for variable in a BLOCK which is defined outside of the BLOCK. */ | |
7532 | if (sym->ns != gfc_current_ns && sym->attr.codimension) | |
7533 | { | |
716da296 | 7534 | gfc_error ("Specifying VOLATILE for coarray variable %qs at " |
aff518b0 | 7535 | "%C, which is use-/host-associated", sym->name); |
7536 | return MATCH_ERROR; | |
7537 | } | |
60e19868 | 7538 | if (!gfc_add_volatile (&sym->attr, sym->name, &gfc_current_locus)) |
ef814c81 | 7539 | return MATCH_ERROR; |
7540 | goto next_item; | |
7541 | ||
7542 | case MATCH_NO: | |
7543 | break; | |
7544 | ||
7545 | case MATCH_ERROR: | |
7546 | return MATCH_ERROR; | |
7547 | } | |
7548 | ||
7549 | next_item: | |
7550 | if (gfc_match_eos () == MATCH_YES) | |
7551 | break; | |
7552 | if (gfc_match_char (',') != MATCH_YES) | |
7553 | goto syntax; | |
7554 | } | |
7555 | ||
7556 | return MATCH_YES; | |
7557 | ||
7558 | syntax: | |
7559 | gfc_error ("Syntax error in VOLATILE statement at %C"); | |
7560 | return MATCH_ERROR; | |
7561 | } | |
7562 | ||
7563 | ||
738928be | 7564 | match |
7565 | gfc_match_asynchronous (void) | |
7566 | { | |
7567 | gfc_symbol *sym; | |
7568 | match m; | |
7569 | ||
60e19868 | 7570 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS statement at %C")) |
738928be | 7571 | return MATCH_ERROR; |
7572 | ||
7573 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7574 | { | |
7575 | return MATCH_ERROR; | |
7576 | } | |
7577 | ||
7578 | if (gfc_match_eos () == MATCH_YES) | |
7579 | goto syntax; | |
7580 | ||
7581 | for(;;) | |
7582 | { | |
8db94b3b | 7583 | /* ASYNCHRONOUS is special because it can be added to host-associated |
738928be | 7584 | symbols locally. */ |
7585 | m = gfc_match_symbol (&sym, 1); | |
7586 | switch (m) | |
7587 | { | |
7588 | case MATCH_YES: | |
60e19868 | 7589 | if (!gfc_add_asynchronous (&sym->attr, sym->name, &gfc_current_locus)) |
738928be | 7590 | return MATCH_ERROR; |
7591 | goto next_item; | |
7592 | ||
7593 | case MATCH_NO: | |
7594 | break; | |
7595 | ||
7596 | case MATCH_ERROR: | |
7597 | return MATCH_ERROR; | |
7598 | } | |
7599 | ||
7600 | next_item: | |
7601 | if (gfc_match_eos () == MATCH_YES) | |
7602 | break; | |
7603 | if (gfc_match_char (',') != MATCH_YES) | |
7604 | goto syntax; | |
7605 | } | |
7606 | ||
7607 | return MATCH_YES; | |
7608 | ||
7609 | syntax: | |
7610 | gfc_error ("Syntax error in ASYNCHRONOUS statement at %C"); | |
7611 | return MATCH_ERROR; | |
7612 | } | |
7613 | ||
7614 | ||
4b8eb6ca | 7615 | /* Match a module procedure statement in a submodule. */ |
7616 | ||
7617 | match | |
7618 | gfc_match_submod_proc (void) | |
7619 | { | |
7620 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7621 | gfc_symbol *sym, *fsym; | |
7622 | match m; | |
7623 | gfc_formal_arglist *formal, *head, *tail; | |
7624 | ||
7625 | if (gfc_current_state () != COMP_CONTAINS | |
7626 | || !(gfc_state_stack->previous | |
7627 | && gfc_state_stack->previous->state == COMP_SUBMODULE)) | |
7628 | return MATCH_NO; | |
7629 | ||
7630 | m = gfc_match (" module% procedure% %n", name); | |
7631 | if (m != MATCH_YES) | |
7632 | return m; | |
7633 | ||
7634 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE PROCEDURE declaration " | |
7635 | "at %C")) | |
7636 | return MATCH_ERROR; | |
7637 | ||
7638 | if (get_proc_name (name, &sym, false)) | |
7639 | return MATCH_ERROR; | |
7640 | ||
7641 | /* Make sure that the result field is appropriately filled, even though | |
7642 | the result symbol will be replaced later on. */ | |
7643 | if (sym->ts.interface->attr.function) | |
7644 | { | |
7645 | if (sym->ts.interface->result | |
7646 | && sym->ts.interface->result != sym->ts.interface) | |
7647 | sym->result= sym->ts.interface->result; | |
7648 | else | |
7649 | sym->result = sym; | |
7650 | } | |
7651 | ||
7652 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if | |
7653 | the symbol existed before. */ | |
7654 | sym->declared_at = gfc_current_locus; | |
7655 | ||
7656 | if (!sym->attr.module_procedure) | |
7657 | return MATCH_ERROR; | |
7658 | ||
7659 | /* Signal match_end to expect "end procedure". */ | |
7660 | sym->abr_modproc_decl = 1; | |
7661 | ||
7662 | /* Change from IFSRC_IFBODY coming from the interface declaration. */ | |
7663 | sym->attr.if_source = IFSRC_DECL; | |
7664 | ||
7665 | gfc_new_block = sym; | |
7666 | ||
7667 | /* Make a new formal arglist with the symbols in the procedure | |
7668 | namespace. */ | |
7669 | head = tail = NULL; | |
7670 | for (formal = sym->formal; formal && formal->sym; formal = formal->next) | |
7671 | { | |
7672 | if (formal == sym->formal) | |
7673 | head = tail = gfc_get_formal_arglist (); | |
7674 | else | |
7675 | { | |
7676 | tail->next = gfc_get_formal_arglist (); | |
7677 | tail = tail->next; | |
7678 | } | |
7679 | ||
7680 | if (gfc_copy_dummy_sym (&fsym, formal->sym, 0)) | |
7681 | goto cleanup; | |
7682 | ||
7683 | tail->sym = fsym; | |
7684 | gfc_set_sym_referenced (fsym); | |
7685 | } | |
7686 | ||
7687 | /* The dummy symbols get cleaned up, when the formal_namespace of the | |
7688 | interface declaration is cleared. This allows us to add the | |
7689 | explicit interface as is done for other type of procedure. */ | |
7690 | if (!gfc_add_explicit_interface (sym, IFSRC_DECL, head, | |
7691 | &gfc_current_locus)) | |
7692 | return MATCH_ERROR; | |
7693 | ||
7694 | if (gfc_match_eos () != MATCH_YES) | |
7695 | { | |
7696 | gfc_syntax_error (ST_MODULE_PROC); | |
7697 | return MATCH_ERROR; | |
7698 | } | |
7699 | ||
7700 | return MATCH_YES; | |
7701 | ||
7702 | cleanup: | |
7703 | gfc_free_formal_arglist (head); | |
7704 | return MATCH_ERROR; | |
7705 | } | |
7706 | ||
7707 | ||
4ee9c684 | 7708 | /* Match a module procedure statement. Note that we have to modify |
7709 | symbols in the parent's namespace because the current one was there | |
89d91d02 | 7710 | to receive symbols that are in an interface's formal argument list. */ |
4ee9c684 | 7711 | |
7712 | match | |
7713 | gfc_match_modproc (void) | |
7714 | { | |
7715 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7716 | gfc_symbol *sym; | |
7717 | match m; | |
d920fb76 | 7718 | locus old_locus; |
63d42079 | 7719 | gfc_namespace *module_ns; |
94ce9f74 | 7720 | gfc_interface *old_interface_head, *interface; |
4ee9c684 | 7721 | |
7722 | if (gfc_state_stack->state != COMP_INTERFACE | |
7723 | || gfc_state_stack->previous == NULL | |
5cf92482 | 7724 | || current_interface.type == INTERFACE_NAMELESS |
7725 | || current_interface.type == INTERFACE_ABSTRACT) | |
4ee9c684 | 7726 | { |
1a9745d2 | 7727 | gfc_error ("MODULE PROCEDURE at %C must be in a generic module " |
7728 | "interface"); | |
4ee9c684 | 7729 | return MATCH_ERROR; |
7730 | } | |
7731 | ||
63d42079 | 7732 | module_ns = gfc_current_ns->parent; |
7733 | for (; module_ns; module_ns = module_ns->parent) | |
15ca3865 | 7734 | if (module_ns->proc_name->attr.flavor == FL_MODULE |
7735 | || module_ns->proc_name->attr.flavor == FL_PROGRAM | |
7736 | || (module_ns->proc_name->attr.flavor == FL_PROCEDURE | |
7737 | && !module_ns->proc_name->attr.contained)) | |
63d42079 | 7738 | break; |
7739 | ||
7740 | if (module_ns == NULL) | |
7741 | return MATCH_ERROR; | |
7742 | ||
94ce9f74 | 7743 | /* Store the current state of the interface. We will need it if we |
7744 | end up with a syntax error and need to recover. */ | |
7745 | old_interface_head = gfc_current_interface_head (); | |
7746 | ||
d920fb76 | 7747 | /* Check if the F2008 optional double colon appears. */ |
7748 | gfc_gobble_whitespace (); | |
7749 | old_locus = gfc_current_locus; | |
7750 | if (gfc_match ("::") == MATCH_YES) | |
7751 | { | |
60e19868 | 7752 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
7753 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
d920fb76 | 7754 | return MATCH_ERROR; |
7755 | } | |
7756 | else | |
7757 | gfc_current_locus = old_locus; | |
8db94b3b | 7758 | |
4ee9c684 | 7759 | for (;;) |
7760 | { | |
94ce9f74 | 7761 | bool last = false; |
d920fb76 | 7762 | old_locus = gfc_current_locus; |
94ce9f74 | 7763 | |
4ee9c684 | 7764 | m = gfc_match_name (name); |
7765 | if (m == MATCH_NO) | |
7766 | goto syntax; | |
7767 | if (m != MATCH_YES) | |
7768 | return MATCH_ERROR; | |
7769 | ||
94ce9f74 | 7770 | /* Check for syntax error before starting to add symbols to the |
7771 | current namespace. */ | |
7772 | if (gfc_match_eos () == MATCH_YES) | |
7773 | last = true; | |
d920fb76 | 7774 | |
94ce9f74 | 7775 | if (!last && gfc_match_char (',') != MATCH_YES) |
7776 | goto syntax; | |
7777 | ||
7778 | /* Now we're sure the syntax is valid, we process this item | |
7779 | further. */ | |
63d42079 | 7780 | if (gfc_get_symbol (name, module_ns, &sym)) |
4ee9c684 | 7781 | return MATCH_ERROR; |
7782 | ||
15ca3865 | 7783 | if (sym->attr.intrinsic) |
7784 | { | |
7785 | gfc_error ("Intrinsic procedure at %L cannot be a MODULE " | |
7786 | "PROCEDURE", &old_locus); | |
7787 | return MATCH_ERROR; | |
7788 | } | |
7789 | ||
4ee9c684 | 7790 | if (sym->attr.proc != PROC_MODULE |
60e19868 | 7791 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
4ee9c684 | 7792 | return MATCH_ERROR; |
7793 | ||
60e19868 | 7794 | if (!gfc_add_interface (sym)) |
4ee9c684 | 7795 | return MATCH_ERROR; |
7796 | ||
3186f695 | 7797 | sym->attr.mod_proc = 1; |
15ca3865 | 7798 | sym->declared_at = old_locus; |
3186f695 | 7799 | |
94ce9f74 | 7800 | if (last) |
4ee9c684 | 7801 | break; |
4ee9c684 | 7802 | } |
7803 | ||
7804 | return MATCH_YES; | |
7805 | ||
7806 | syntax: | |
94ce9f74 | 7807 | /* Restore the previous state of the interface. */ |
7808 | interface = gfc_current_interface_head (); | |
7809 | gfc_set_current_interface_head (old_interface_head); | |
7810 | ||
7811 | /* Free the new interfaces. */ | |
7812 | while (interface != old_interface_head) | |
7813 | { | |
7814 | gfc_interface *i = interface->next; | |
434f0922 | 7815 | free (interface); |
94ce9f74 | 7816 | interface = i; |
7817 | } | |
7818 | ||
7819 | /* And issue a syntax error. */ | |
4ee9c684 | 7820 | gfc_syntax_error (ST_MODULE_PROC); |
7821 | return MATCH_ERROR; | |
7822 | } | |
7823 | ||
7824 | ||
ea94d76d | 7825 | /* Check a derived type that is being extended. */ |
7a99bc9b | 7826 | |
ea94d76d | 7827 | static gfc_symbol* |
7828 | check_extended_derived_type (char *name) | |
7829 | { | |
7830 | gfc_symbol *extended; | |
7831 | ||
7832 | if (gfc_find_symbol (name, gfc_current_ns, 1, &extended)) | |
7833 | { | |
7834 | gfc_error ("Ambiguous symbol in TYPE definition at %C"); | |
7835 | return NULL; | |
7836 | } | |
7837 | ||
7a99bc9b | 7838 | extended = gfc_find_dt_in_generic (extended); |
7839 | ||
7840 | /* F08:C428. */ | |
ea94d76d | 7841 | if (!extended) |
7842 | { | |
716da296 | 7843 | gfc_error ("Symbol %qs at %C has not been previously defined", name); |
ea94d76d | 7844 | return NULL; |
7845 | } | |
7846 | ||
7847 | if (extended->attr.flavor != FL_DERIVED) | |
7848 | { | |
716da296 | 7849 | gfc_error ("%qs in EXTENDS expression at %C is not a " |
ea94d76d | 7850 | "derived type", name); |
7851 | return NULL; | |
7852 | } | |
7853 | ||
7854 | if (extended->attr.is_bind_c) | |
7855 | { | |
716da296 | 7856 | gfc_error ("%qs cannot be extended at %C because it " |
ea94d76d | 7857 | "is BIND(C)", extended->name); |
7858 | return NULL; | |
7859 | } | |
7860 | ||
7861 | if (extended->attr.sequence) | |
7862 | { | |
716da296 | 7863 | gfc_error ("%qs cannot be extended at %C because it " |
ea94d76d | 7864 | "is a SEQUENCE type", extended->name); |
7865 | return NULL; | |
7866 | } | |
7867 | ||
7868 | return extended; | |
7869 | } | |
7870 | ||
7871 | ||
c5d33754 | 7872 | /* Match the optional attribute specifiers for a type declaration. |
7873 | Return MATCH_ERROR if an error is encountered in one of the handled | |
7874 | attributes (public, private, bind(c)), MATCH_NO if what's found is | |
7875 | not a handled attribute, and MATCH_YES otherwise. TODO: More error | |
7876 | checking on attribute conflicts needs to be done. */ | |
4ee9c684 | 7877 | |
7878 | match | |
ea94d76d | 7879 | gfc_get_type_attr_spec (symbol_attribute *attr, char *name) |
4ee9c684 | 7880 | { |
c5d33754 | 7881 | /* See if the derived type is marked as private. */ |
4ee9c684 | 7882 | if (gfc_match (" , private") == MATCH_YES) |
7883 | { | |
e14bee04 | 7884 | if (gfc_current_state () != COMP_MODULE) |
4ee9c684 | 7885 | { |
e14bee04 | 7886 | gfc_error ("Derived type at %C can only be PRIVATE in the " |
7887 | "specification part of a module"); | |
4ee9c684 | 7888 | return MATCH_ERROR; |
7889 | } | |
7890 | ||
60e19868 | 7891 | if (!gfc_add_access (attr, ACCESS_PRIVATE, NULL, NULL)) |
4ee9c684 | 7892 | return MATCH_ERROR; |
4ee9c684 | 7893 | } |
c5d33754 | 7894 | else if (gfc_match (" , public") == MATCH_YES) |
4ee9c684 | 7895 | { |
e14bee04 | 7896 | if (gfc_current_state () != COMP_MODULE) |
4ee9c684 | 7897 | { |
e14bee04 | 7898 | gfc_error ("Derived type at %C can only be PUBLIC in the " |
7899 | "specification part of a module"); | |
4ee9c684 | 7900 | return MATCH_ERROR; |
7901 | } | |
7902 | ||
60e19868 | 7903 | if (!gfc_add_access (attr, ACCESS_PUBLIC, NULL, NULL)) |
4ee9c684 | 7904 | return MATCH_ERROR; |
4ee9c684 | 7905 | } |
ac5f2650 | 7906 | else if (gfc_match (" , bind ( c )") == MATCH_YES) |
c5d33754 | 7907 | { |
7908 | /* If the type is defined to be bind(c) it then needs to make | |
7909 | sure that all fields are interoperable. This will | |
7910 | need to be a semantic check on the finished derived type. | |
7911 | See 15.2.3 (lines 9-12) of F2003 draft. */ | |
60e19868 | 7912 | if (!gfc_add_is_bind_c (attr, NULL, &gfc_current_locus, 0)) |
c5d33754 | 7913 | return MATCH_ERROR; |
7914 | ||
7915 | /* TODO: attr conflicts need to be checked, probably in symbol.c. */ | |
7916 | } | |
ac5f2650 | 7917 | else if (gfc_match (" , abstract") == MATCH_YES) |
7918 | { | |
60e19868 | 7919 | if (!gfc_notify_std (GFC_STD_F2003, "ABSTRACT type at %C")) |
ac5f2650 | 7920 | return MATCH_ERROR; |
7921 | ||
60e19868 | 7922 | if (!gfc_add_abstract (attr, &gfc_current_locus)) |
ac5f2650 | 7923 | return MATCH_ERROR; |
7924 | } | |
60e19868 | 7925 | else if (name && gfc_match (" , extends ( %n )", name) == MATCH_YES) |
ea94d76d | 7926 | { |
60e19868 | 7927 | if (!gfc_add_extension (attr, &gfc_current_locus)) |
ea94d76d | 7928 | return MATCH_ERROR; |
7929 | } | |
c5d33754 | 7930 | else |
7931 | return MATCH_NO; | |
7932 | ||
7933 | /* If we get here, something matched. */ | |
7934 | return MATCH_YES; | |
7935 | } | |
7936 | ||
7937 | ||
7938 | /* Match the beginning of a derived type declaration. If a type name | |
7939 | was the result of a function, then it is possible to have a symbol | |
7940 | already to be known as a derived type yet have no components. */ | |
7941 | ||
7942 | match | |
7943 | gfc_match_derived_decl (void) | |
7944 | { | |
7945 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
ea94d76d | 7946 | char parent[GFC_MAX_SYMBOL_LEN + 1]; |
c5d33754 | 7947 | symbol_attribute attr; |
c2958b6b | 7948 | gfc_symbol *sym, *gensym; |
ea94d76d | 7949 | gfc_symbol *extended; |
c5d33754 | 7950 | match m; |
7951 | match is_type_attr_spec = MATCH_NO; | |
33e86520 | 7952 | bool seen_attr = false; |
c2958b6b | 7953 | gfc_interface *intr = NULL, *head; |
c5d33754 | 7954 | |
7955 | if (gfc_current_state () == COMP_DERIVED) | |
7956 | return MATCH_NO; | |
7957 | ||
ea94d76d | 7958 | name[0] = '\0'; |
7959 | parent[0] = '\0'; | |
c5d33754 | 7960 | gfc_clear_attr (&attr); |
ea94d76d | 7961 | extended = NULL; |
c5d33754 | 7962 | |
7963 | do | |
7964 | { | |
ea94d76d | 7965 | is_type_attr_spec = gfc_get_type_attr_spec (&attr, parent); |
c5d33754 | 7966 | if (is_type_attr_spec == MATCH_ERROR) |
7967 | return MATCH_ERROR; | |
33e86520 | 7968 | if (is_type_attr_spec == MATCH_YES) |
7969 | seen_attr = true; | |
c5d33754 | 7970 | } while (is_type_attr_spec == MATCH_YES); |
4ee9c684 | 7971 | |
e485ad6b | 7972 | /* Deal with derived type extensions. The extension attribute has |
7973 | been added to 'attr' but now the parent type must be found and | |
7974 | checked. */ | |
ea94d76d | 7975 | if (parent[0]) |
7976 | extended = check_extended_derived_type (parent); | |
7977 | ||
7978 | if (parent[0] && !extended) | |
7979 | return MATCH_ERROR; | |
7980 | ||
33e86520 | 7981 | if (gfc_match (" ::") != MATCH_YES && seen_attr) |
4ee9c684 | 7982 | { |
7983 | gfc_error ("Expected :: in TYPE definition at %C"); | |
7984 | return MATCH_ERROR; | |
7985 | } | |
7986 | ||
7987 | m = gfc_match (" %n%t", name); | |
7988 | if (m != MATCH_YES) | |
7989 | return m; | |
7990 | ||
a3055431 | 7991 | /* Make sure the name is not the name of an intrinsic type. */ |
7992 | if (gfc_is_intrinsic_typename (name)) | |
4ee9c684 | 7993 | { |
716da296 | 7994 | gfc_error ("Type name %qs at %C cannot be the same as an intrinsic " |
1a9745d2 | 7995 | "type", name); |
4ee9c684 | 7996 | return MATCH_ERROR; |
7997 | } | |
7998 | ||
c2958b6b | 7999 | if (gfc_get_symbol (name, NULL, &gensym)) |
4ee9c684 | 8000 | return MATCH_ERROR; |
8001 | ||
c2958b6b | 8002 | if (!gensym->attr.generic && gensym->ts.type != BT_UNKNOWN) |
4ee9c684 | 8003 | { |
716da296 | 8004 | gfc_error ("Derived type name %qs at %C already has a basic type " |
c2958b6b | 8005 | "of %s", gensym->name, gfc_typename (&gensym->ts)); |
8006 | return MATCH_ERROR; | |
8007 | } | |
8008 | ||
8009 | if (!gensym->attr.generic | |
60e19868 | 8010 | && !gfc_add_generic (&gensym->attr, gensym->name, NULL)) |
c2958b6b | 8011 | return MATCH_ERROR; |
8012 | ||
8013 | if (!gensym->attr.function | |
60e19868 | 8014 | && !gfc_add_function (&gensym->attr, gensym->name, NULL)) |
c2958b6b | 8015 | return MATCH_ERROR; |
8016 | ||
8017 | sym = gfc_find_dt_in_generic (gensym); | |
8018 | ||
8019 | if (sym && (sym->components != NULL || sym->attr.zero_comp)) | |
8020 | { | |
716da296 | 8021 | gfc_error ("Derived type definition of %qs at %C has already been " |
c2958b6b | 8022 | "defined", sym->name); |
4ee9c684 | 8023 | return MATCH_ERROR; |
8024 | } | |
8025 | ||
c2958b6b | 8026 | if (!sym) |
8027 | { | |
8028 | /* Use upper case to save the actual derived-type symbol. */ | |
8029 | gfc_get_symbol (gfc_get_string ("%c%s", | |
8030 | (char) TOUPPER ((unsigned char) gensym->name[0]), | |
8031 | &gensym->name[1]), NULL, &sym); | |
8032 | sym->name = gfc_get_string (gensym->name); | |
8033 | head = gensym->generic; | |
8034 | intr = gfc_get_interface (); | |
8035 | intr->sym = sym; | |
8036 | intr->where = gfc_current_locus; | |
8037 | intr->sym->declared_at = gfc_current_locus; | |
8038 | intr->next = head; | |
8039 | gensym->generic = intr; | |
8040 | gensym->attr.if_source = IFSRC_DECL; | |
8041 | } | |
8042 | ||
4ee9c684 | 8043 | /* The symbol may already have the derived attribute without the |
8044 | components. The ways this can happen is via a function | |
8045 | definition, an INTRINSIC statement or a subtype in another | |
8046 | derived type that is a pointer. The first part of the AND clause | |
69b1505f | 8047 | is true if the symbol is not the return value of a function. */ |
4ee9c684 | 8048 | if (sym->attr.flavor != FL_DERIVED |
60e19868 | 8049 | && !gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL)) |
4ee9c684 | 8050 | return MATCH_ERROR; |
8051 | ||
4ee9c684 | 8052 | if (attr.access != ACCESS_UNKNOWN |
60e19868 | 8053 | && !gfc_add_access (&sym->attr, attr.access, sym->name, NULL)) |
4ee9c684 | 8054 | return MATCH_ERROR; |
c2958b6b | 8055 | else if (sym->attr.access == ACCESS_UNKNOWN |
8056 | && gensym->attr.access != ACCESS_UNKNOWN | |
60e19868 | 8057 | && !gfc_add_access (&sym->attr, gensym->attr.access, |
8058 | sym->name, NULL)) | |
c2958b6b | 8059 | return MATCH_ERROR; |
8060 | ||
8061 | if (sym->attr.access != ACCESS_UNKNOWN | |
8062 | && gensym->attr.access == ACCESS_UNKNOWN) | |
8063 | gensym->attr.access = sym->attr.access; | |
4ee9c684 | 8064 | |
c5d33754 | 8065 | /* See if the derived type was labeled as bind(c). */ |
8066 | if (attr.is_bind_c != 0) | |
8067 | sym->attr.is_bind_c = attr.is_bind_c; | |
8068 | ||
223f0f57 | 8069 | /* Construct the f2k_derived namespace if it is not yet there. */ |
8070 | if (!sym->f2k_derived) | |
8071 | sym->f2k_derived = gfc_get_namespace (NULL, 0); | |
8db94b3b | 8072 | |
ea94d76d | 8073 | if (extended && !sym->components) |
8074 | { | |
8075 | gfc_component *p; | |
ea94d76d | 8076 | |
8077 | /* Add the extended derived type as the first component. */ | |
8078 | gfc_add_component (sym, parent, &p); | |
ea94d76d | 8079 | extended->refs++; |
8080 | gfc_set_sym_referenced (extended); | |
8081 | ||
8082 | p->ts.type = BT_DERIVED; | |
eeebe20b | 8083 | p->ts.u.derived = extended; |
ea94d76d | 8084 | p->initializer = gfc_default_initializer (&p->ts); |
8db94b3b | 8085 | |
bdfbc762 | 8086 | /* Set extension level. */ |
8087 | if (extended->attr.extension == 255) | |
8088 | { | |
8089 | /* Since the extension field is 8 bit wide, we can only have | |
8090 | up to 255 extension levels. */ | |
716da296 | 8091 | gfc_error ("Maximum extension level reached with type %qs at %L", |
bdfbc762 | 8092 | extended->name, &extended->declared_at); |
8093 | return MATCH_ERROR; | |
8094 | } | |
8095 | sym->attr.extension = extended->attr.extension + 1; | |
ea94d76d | 8096 | |
8097 | /* Provide the links between the extended type and its extension. */ | |
8098 | if (!extended->f2k_derived) | |
8099 | extended->f2k_derived = gfc_get_namespace (NULL, 0); | |
ea94d76d | 8100 | } |
8101 | ||
bdfbc762 | 8102 | if (!sym->hash_value) |
8103 | /* Set the hash for the compound name for this type. */ | |
a656e7c2 | 8104 | sym->hash_value = gfc_hash_value (sym); |
1de1b1a9 | 8105 | |
ac5f2650 | 8106 | /* Take over the ABSTRACT attribute. */ |
8107 | sym->attr.abstract = attr.abstract; | |
8108 | ||
4ee9c684 | 8109 | gfc_new_block = sym; |
8110 | ||
8111 | return MATCH_YES; | |
8112 | } | |
b549d2a5 | 8113 | |
8114 | ||
8db94b3b | 8115 | /* Cray Pointees can be declared as: |
452695a8 | 8116 | pointer (ipt, a (n,m,...,*)) */ |
b549d2a5 | 8117 | |
8458f4ca | 8118 | match |
b549d2a5 | 8119 | gfc_mod_pointee_as (gfc_array_spec *as) |
8120 | { | |
8121 | as->cray_pointee = true; /* This will be useful to know later. */ | |
8122 | if (as->type == AS_ASSUMED_SIZE) | |
452695a8 | 8123 | as->cp_was_assumed = true; |
b549d2a5 | 8124 | else if (as->type == AS_ASSUMED_SHAPE) |
8125 | { | |
8126 | gfc_error ("Cray Pointee at %C cannot be assumed shape array"); | |
8127 | return MATCH_ERROR; | |
8128 | } | |
8129 | return MATCH_YES; | |
8130 | } | |
3b6a4b41 | 8131 | |
8132 | ||
8db94b3b | 8133 | /* Match the enum definition statement, here we are trying to match |
8134 | the first line of enum definition statement. | |
3b6a4b41 | 8135 | Returns MATCH_YES if match is found. */ |
8136 | ||
8137 | match | |
8138 | gfc_match_enum (void) | |
8139 | { | |
8140 | match m; | |
8db94b3b | 8141 | |
3b6a4b41 | 8142 | m = gfc_match_eos (); |
8143 | if (m != MATCH_YES) | |
8144 | return m; | |
8145 | ||
60e19868 | 8146 | if (!gfc_notify_std (GFC_STD_F2003, "ENUM and ENUMERATOR at %C")) |
3b6a4b41 | 8147 | return MATCH_ERROR; |
8148 | ||
8149 | return MATCH_YES; | |
8150 | } | |
8151 | ||
8152 | ||
fe1328da | 8153 | /* Returns an initializer whose value is one higher than the value of the |
8154 | LAST_INITIALIZER argument. If the argument is NULL, the | |
8155 | initializers value will be set to zero. The initializer's kind | |
8156 | will be set to gfc_c_int_kind. | |
8157 | ||
8158 | If -fshort-enums is given, the appropriate kind will be selected | |
8159 | later after all enumerators have been parsed. A warning is issued | |
8160 | here if an initializer exceeds gfc_c_int_kind. */ | |
8161 | ||
8162 | static gfc_expr * | |
8163 | enum_initializer (gfc_expr *last_initializer, locus where) | |
8164 | { | |
8165 | gfc_expr *result; | |
126387b5 | 8166 | result = gfc_get_constant_expr (BT_INTEGER, gfc_c_int_kind, &where); |
fe1328da | 8167 | |
8168 | mpz_init (result->value.integer); | |
8169 | ||
8170 | if (last_initializer != NULL) | |
8171 | { | |
8172 | mpz_add_ui (result->value.integer, last_initializer->value.integer, 1); | |
8173 | result->where = last_initializer->where; | |
8174 | ||
8175 | if (gfc_check_integer_range (result->value.integer, | |
8176 | gfc_c_int_kind) != ARITH_OK) | |
8177 | { | |
8178 | gfc_error ("Enumerator exceeds the C integer type at %C"); | |
8179 | return NULL; | |
8180 | } | |
8181 | } | |
8182 | else | |
8183 | { | |
8184 | /* Control comes here, if it's the very first enumerator and no | |
8185 | initializer has been given. It will be initialized to zero. */ | |
8186 | mpz_set_si (result->value.integer, 0); | |
8187 | } | |
8188 | ||
8189 | return result; | |
8190 | } | |
8191 | ||
8192 | ||
60fbbf9e | 8193 | /* Match a variable name with an optional initializer. When this |
8194 | subroutine is called, a variable is expected to be parsed next. | |
8195 | Depending on what is happening at the moment, updates either the | |
8196 | symbol table or the current interface. */ | |
8197 | ||
8198 | static match | |
8199 | enumerator_decl (void) | |
8200 | { | |
8201 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8202 | gfc_expr *initializer; | |
8203 | gfc_array_spec *as = NULL; | |
8204 | gfc_symbol *sym; | |
8205 | locus var_locus; | |
8206 | match m; | |
60e19868 | 8207 | bool t; |
60fbbf9e | 8208 | locus old_locus; |
8209 | ||
8210 | initializer = NULL; | |
8211 | old_locus = gfc_current_locus; | |
8212 | ||
8213 | /* When we get here, we've just matched a list of attributes and | |
8214 | maybe a type and a double colon. The next thing we expect to see | |
8215 | is the name of the symbol. */ | |
8216 | m = gfc_match_name (name); | |
8217 | if (m != MATCH_YES) | |
8218 | goto cleanup; | |
8219 | ||
8220 | var_locus = gfc_current_locus; | |
8221 | ||
8222 | /* OK, we've successfully matched the declaration. Now put the | |
8223 | symbol in the current namespace. If we fail to create the symbol, | |
8224 | bail out. */ | |
60e19868 | 8225 | if (!build_sym (name, NULL, false, &as, &var_locus)) |
60fbbf9e | 8226 | { |
8227 | m = MATCH_ERROR; | |
8228 | goto cleanup; | |
8229 | } | |
8230 | ||
8231 | /* The double colon must be present in order to have initializers. | |
8232 | Otherwise the statement is ambiguous with an assignment statement. */ | |
8233 | if (colon_seen) | |
8234 | { | |
8235 | if (gfc_match_char ('=') == MATCH_YES) | |
8236 | { | |
8237 | m = gfc_match_init_expr (&initializer); | |
8238 | if (m == MATCH_NO) | |
8239 | { | |
8240 | gfc_error ("Expected an initialization expression at %C"); | |
8241 | m = MATCH_ERROR; | |
8242 | } | |
8243 | ||
8244 | if (m != MATCH_YES) | |
8245 | goto cleanup; | |
8246 | } | |
8247 | } | |
8248 | ||
8249 | /* If we do not have an initializer, the initialization value of the | |
8250 | previous enumerator (stored in last_initializer) is incremented | |
8251 | by 1 and is used to initialize the current enumerator. */ | |
8252 | if (initializer == NULL) | |
fe1328da | 8253 | initializer = enum_initializer (last_initializer, old_locus); |
e14bee04 | 8254 | |
60fbbf9e | 8255 | if (initializer == NULL || initializer->ts.type != BT_INTEGER) |
8256 | { | |
a8beb4f8 | 8257 | gfc_error ("ENUMERATOR %L not initialized with integer expression", |
8258 | &var_locus); | |
e14bee04 | 8259 | m = MATCH_ERROR; |
60fbbf9e | 8260 | goto cleanup; |
8261 | } | |
8262 | ||
8263 | /* Store this current initializer, for the next enumerator variable | |
8264 | to be parsed. add_init_expr_to_sym() zeros initializer, so we | |
8265 | use last_initializer below. */ | |
8266 | last_initializer = initializer; | |
8267 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
8268 | ||
8269 | /* Maintain enumerator history. */ | |
8270 | gfc_find_symbol (name, NULL, 0, &sym); | |
8271 | create_enum_history (sym, last_initializer); | |
8272 | ||
60e19868 | 8273 | return (t) ? MATCH_YES : MATCH_ERROR; |
60fbbf9e | 8274 | |
8275 | cleanup: | |
8276 | /* Free stuff up and return. */ | |
8277 | gfc_free_expr (initializer); | |
8278 | ||
8279 | return m; | |
8280 | } | |
8281 | ||
8282 | ||
f6d0e37a | 8283 | /* Match the enumerator definition statement. */ |
3b6a4b41 | 8284 | |
8285 | match | |
8286 | gfc_match_enumerator_def (void) | |
8287 | { | |
8288 | match m; | |
60e19868 | 8289 | bool t; |
e14bee04 | 8290 | |
3b6a4b41 | 8291 | gfc_clear_ts (¤t_ts); |
e14bee04 | 8292 | |
3b6a4b41 | 8293 | m = gfc_match (" enumerator"); |
8294 | if (m != MATCH_YES) | |
8295 | return m; | |
60fbbf9e | 8296 | |
8297 | m = gfc_match (" :: "); | |
8298 | if (m == MATCH_ERROR) | |
8299 | return m; | |
8300 | ||
8301 | colon_seen = (m == MATCH_YES); | |
e14bee04 | 8302 | |
3b6a4b41 | 8303 | if (gfc_current_state () != COMP_ENUM) |
8304 | { | |
8305 | gfc_error ("ENUM definition statement expected before %C"); | |
8306 | gfc_free_enum_history (); | |
8307 | return MATCH_ERROR; | |
8308 | } | |
8309 | ||
8310 | (¤t_ts)->type = BT_INTEGER; | |
8311 | (¤t_ts)->kind = gfc_c_int_kind; | |
e14bee04 | 8312 | |
60fbbf9e | 8313 | gfc_clear_attr (¤t_attr); |
8314 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, NULL); | |
60e19868 | 8315 | if (!t) |
3b6a4b41 | 8316 | { |
60fbbf9e | 8317 | m = MATCH_ERROR; |
3b6a4b41 | 8318 | goto cleanup; |
8319 | } | |
8320 | ||
3b6a4b41 | 8321 | for (;;) |
8322 | { | |
60fbbf9e | 8323 | m = enumerator_decl (); |
3b6a4b41 | 8324 | if (m == MATCH_ERROR) |
a8beb4f8 | 8325 | { |
8326 | gfc_free_enum_history (); | |
8327 | goto cleanup; | |
8328 | } | |
3b6a4b41 | 8329 | if (m == MATCH_NO) |
8330 | break; | |
8331 | ||
8332 | if (gfc_match_eos () == MATCH_YES) | |
8333 | goto cleanup; | |
8334 | if (gfc_match_char (',') != MATCH_YES) | |
8335 | break; | |
8336 | } | |
8337 | ||
8338 | if (gfc_current_state () == COMP_ENUM) | |
8339 | { | |
8340 | gfc_free_enum_history (); | |
8341 | gfc_error ("Syntax error in ENUMERATOR definition at %C"); | |
8342 | m = MATCH_ERROR; | |
8343 | } | |
8344 | ||
8345 | cleanup: | |
8346 | gfc_free_array_spec (current_as); | |
8347 | current_as = NULL; | |
8348 | return m; | |
8349 | ||
8350 | } | |
8351 | ||
e449e4dd | 8352 | |
7fd88f6e | 8353 | /* Match binding attributes. */ |
8354 | ||
8355 | static match | |
64e93293 | 8356 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc) |
7fd88f6e | 8357 | { |
8358 | bool found_passing = false; | |
64e93293 | 8359 | bool seen_ptr = false; |
fe9b08a2 | 8360 | match m = MATCH_YES; |
7fd88f6e | 8361 | |
df084314 | 8362 | /* Initialize to defaults. Do so even before the MATCH_NO check so that in |
7fd88f6e | 8363 | this case the defaults are in there. */ |
8364 | ba->access = ACCESS_UNKNOWN; | |
8365 | ba->pass_arg = NULL; | |
8366 | ba->pass_arg_num = 0; | |
8367 | ba->nopass = 0; | |
8368 | ba->non_overridable = 0; | |
61c3b81d | 8369 | ba->deferred = 0; |
fe9b08a2 | 8370 | ba->ppc = ppc; |
7fd88f6e | 8371 | |
8372 | /* If we find a comma, we believe there are binding attributes. */ | |
fe9b08a2 | 8373 | m = gfc_match_char (','); |
8374 | if (m == MATCH_NO) | |
8375 | goto done; | |
7fd88f6e | 8376 | |
8377 | do | |
8378 | { | |
e2f06a48 | 8379 | /* Access specifier. */ |
8380 | ||
8381 | m = gfc_match (" public"); | |
7fd88f6e | 8382 | if (m == MATCH_ERROR) |
8383 | goto error; | |
8384 | if (m == MATCH_YES) | |
8385 | { | |
e2f06a48 | 8386 | if (ba->access != ACCESS_UNKNOWN) |
7fd88f6e | 8387 | { |
e2f06a48 | 8388 | gfc_error ("Duplicate access-specifier at %C"); |
7fd88f6e | 8389 | goto error; |
8390 | } | |
8391 | ||
e2f06a48 | 8392 | ba->access = ACCESS_PUBLIC; |
7fd88f6e | 8393 | continue; |
8394 | } | |
8395 | ||
e2f06a48 | 8396 | m = gfc_match (" private"); |
7fd88f6e | 8397 | if (m == MATCH_ERROR) |
8398 | goto error; | |
8399 | if (m == MATCH_YES) | |
8400 | { | |
e2f06a48 | 8401 | if (ba->access != ACCESS_UNKNOWN) |
7fd88f6e | 8402 | { |
e2f06a48 | 8403 | gfc_error ("Duplicate access-specifier at %C"); |
7fd88f6e | 8404 | goto error; |
8405 | } | |
8406 | ||
e2f06a48 | 8407 | ba->access = ACCESS_PRIVATE; |
7fd88f6e | 8408 | continue; |
8409 | } | |
8410 | ||
e2f06a48 | 8411 | /* If inside GENERIC, the following is not allowed. */ |
8412 | if (!generic) | |
7fd88f6e | 8413 | { |
7fd88f6e | 8414 | |
e2f06a48 | 8415 | /* NOPASS flag. */ |
8416 | m = gfc_match (" nopass"); | |
8417 | if (m == MATCH_ERROR) | |
8418 | goto error; | |
8419 | if (m == MATCH_YES) | |
7fd88f6e | 8420 | { |
e2f06a48 | 8421 | if (found_passing) |
8422 | { | |
8423 | gfc_error ("Binding attributes already specify passing," | |
8424 | " illegal NOPASS at %C"); | |
8425 | goto error; | |
8426 | } | |
8427 | ||
8428 | found_passing = true; | |
8429 | ba->nopass = 1; | |
8430 | continue; | |
7fd88f6e | 8431 | } |
8432 | ||
e2f06a48 | 8433 | /* PASS possibly including argument. */ |
8434 | m = gfc_match (" pass"); | |
8435 | if (m == MATCH_ERROR) | |
8436 | goto error; | |
8437 | if (m == MATCH_YES) | |
7fd88f6e | 8438 | { |
e2f06a48 | 8439 | char arg[GFC_MAX_SYMBOL_LEN + 1]; |
8440 | ||
8441 | if (found_passing) | |
8442 | { | |
8443 | gfc_error ("Binding attributes already specify passing," | |
8444 | " illegal PASS at %C"); | |
8445 | goto error; | |
8446 | } | |
8447 | ||
8448 | m = gfc_match (" ( %n )", arg); | |
8449 | if (m == MATCH_ERROR) | |
8450 | goto error; | |
8451 | if (m == MATCH_YES) | |
fe9b08a2 | 8452 | ba->pass_arg = gfc_get_string (arg); |
e2f06a48 | 8453 | gcc_assert ((m == MATCH_YES) == (ba->pass_arg != NULL)); |
8454 | ||
8455 | found_passing = true; | |
8456 | ba->nopass = 0; | |
8457 | continue; | |
7fd88f6e | 8458 | } |
8459 | ||
64e93293 | 8460 | if (ppc) |
8461 | { | |
8462 | /* POINTER flag. */ | |
8463 | m = gfc_match (" pointer"); | |
8464 | if (m == MATCH_ERROR) | |
8465 | goto error; | |
8466 | if (m == MATCH_YES) | |
8467 | { | |
8468 | if (seen_ptr) | |
8469 | { | |
8470 | gfc_error ("Duplicate POINTER attribute at %C"); | |
8471 | goto error; | |
8472 | } | |
8473 | ||
8474 | seen_ptr = true; | |
64e93293 | 8475 | continue; |
8476 | } | |
8477 | } | |
8478 | else | |
8479 | { | |
8480 | /* NON_OVERRIDABLE flag. */ | |
8481 | m = gfc_match (" non_overridable"); | |
8482 | if (m == MATCH_ERROR) | |
8483 | goto error; | |
8484 | if (m == MATCH_YES) | |
8485 | { | |
8486 | if (ba->non_overridable) | |
8487 | { | |
8488 | gfc_error ("Duplicate NON_OVERRIDABLE at %C"); | |
8489 | goto error; | |
8490 | } | |
8491 | ||
8492 | ba->non_overridable = 1; | |
8493 | continue; | |
8494 | } | |
8495 | ||
8496 | /* DEFERRED flag. */ | |
8497 | m = gfc_match (" deferred"); | |
8498 | if (m == MATCH_ERROR) | |
8499 | goto error; | |
8500 | if (m == MATCH_YES) | |
8501 | { | |
8502 | if (ba->deferred) | |
8503 | { | |
8504 | gfc_error ("Duplicate DEFERRED at %C"); | |
8505 | goto error; | |
8506 | } | |
8507 | ||
8508 | ba->deferred = 1; | |
8509 | continue; | |
8510 | } | |
8511 | } | |
8512 | ||
7fd88f6e | 8513 | } |
8514 | ||
8515 | /* Nothing matching found. */ | |
e2f06a48 | 8516 | if (generic) |
8517 | gfc_error ("Expected access-specifier at %C"); | |
8518 | else | |
8519 | gfc_error ("Expected binding attribute at %C"); | |
7fd88f6e | 8520 | goto error; |
8521 | } | |
8522 | while (gfc_match_char (',') == MATCH_YES); | |
8523 | ||
61c3b81d | 8524 | /* NON_OVERRIDABLE and DEFERRED exclude themselves. */ |
8525 | if (ba->non_overridable && ba->deferred) | |
8526 | { | |
8527 | gfc_error ("NON_OVERRIDABLE and DEFERRED can't both appear at %C"); | |
8528 | goto error; | |
8529 | } | |
8530 | ||
fe9b08a2 | 8531 | m = MATCH_YES; |
8532 | ||
8533 | done: | |
e2f06a48 | 8534 | if (ba->access == ACCESS_UNKNOWN) |
8535 | ba->access = gfc_typebound_default_access; | |
8536 | ||
64e93293 | 8537 | if (ppc && !seen_ptr) |
8538 | { | |
8539 | gfc_error ("POINTER attribute is required for procedure pointer component" | |
8540 | " at %C"); | |
8541 | goto error; | |
8542 | } | |
8543 | ||
fe9b08a2 | 8544 | return m; |
7fd88f6e | 8545 | |
8546 | error: | |
7fd88f6e | 8547 | return MATCH_ERROR; |
8548 | } | |
8549 | ||
8550 | ||
8551 | /* Match a PROCEDURE specific binding inside a derived type. */ | |
8552 | ||
8553 | static match | |
8554 | match_procedure_in_type (void) | |
8555 | { | |
8556 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8557 | char target_buf[GFC_MAX_SYMBOL_LEN + 1]; | |
7a3aaef8 | 8558 | char* target = NULL, *ifc = NULL; |
4a12b9ba | 8559 | gfc_typebound_proc tb; |
7fd88f6e | 8560 | bool seen_colons; |
8561 | bool seen_attrs; | |
8562 | match m; | |
8563 | gfc_symtree* stree; | |
8564 | gfc_namespace* ns; | |
8565 | gfc_symbol* block; | |
7a3aaef8 | 8566 | int num; |
7fd88f6e | 8567 | |
8568 | /* Check current state. */ | |
8569 | gcc_assert (gfc_state_stack->state == COMP_DERIVED_CONTAINS); | |
8570 | block = gfc_state_stack->previous->sym; | |
8571 | gcc_assert (block); | |
8572 | ||
61c3b81d | 8573 | /* Try to match PROCEDURE(interface). */ |
7fd88f6e | 8574 | if (gfc_match (" (") == MATCH_YES) |
8575 | { | |
61c3b81d | 8576 | m = gfc_match_name (target_buf); |
8577 | if (m == MATCH_ERROR) | |
8578 | return m; | |
8579 | if (m != MATCH_YES) | |
8580 | { | |
0d2b3c9c | 8581 | gfc_error ("Interface-name expected after %<(%> at %C"); |
61c3b81d | 8582 | return MATCH_ERROR; |
8583 | } | |
8584 | ||
8585 | if (gfc_match (" )") != MATCH_YES) | |
8586 | { | |
0d2b3c9c | 8587 | gfc_error ("%<)%> expected at %C"); |
61c3b81d | 8588 | return MATCH_ERROR; |
8589 | } | |
8590 | ||
7a3aaef8 | 8591 | ifc = target_buf; |
7fd88f6e | 8592 | } |
8593 | ||
8594 | /* Construct the data structure. */ | |
b3d1387f | 8595 | memset (&tb, 0, sizeof (tb)); |
4a12b9ba | 8596 | tb.where = gfc_current_locus; |
7fd88f6e | 8597 | |
8598 | /* Match binding attributes. */ | |
4a12b9ba | 8599 | m = match_binding_attributes (&tb, false, false); |
7fd88f6e | 8600 | if (m == MATCH_ERROR) |
8601 | return m; | |
8602 | seen_attrs = (m == MATCH_YES); | |
8603 | ||
7a3aaef8 | 8604 | /* Check that attribute DEFERRED is given if an interface is specified. */ |
4a12b9ba | 8605 | if (tb.deferred && !ifc) |
61c3b81d | 8606 | { |
8607 | gfc_error ("Interface must be specified for DEFERRED binding at %C"); | |
8608 | return MATCH_ERROR; | |
8609 | } | |
4a12b9ba | 8610 | if (ifc && !tb.deferred) |
61c3b81d | 8611 | { |
8612 | gfc_error ("PROCEDURE(interface) at %C should be declared DEFERRED"); | |
8613 | return MATCH_ERROR; | |
8614 | } | |
8615 | ||
7fd88f6e | 8616 | /* Match the colons. */ |
8617 | m = gfc_match (" ::"); | |
8618 | if (m == MATCH_ERROR) | |
8619 | return m; | |
8620 | seen_colons = (m == MATCH_YES); | |
8621 | if (seen_attrs && !seen_colons) | |
8622 | { | |
0d2b3c9c | 8623 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
7fd88f6e | 8624 | return MATCH_ERROR; |
8625 | } | |
8626 | ||
8db94b3b | 8627 | /* Match the binding names. */ |
7a3aaef8 | 8628 | for(num=1;;num++) |
7fd88f6e | 8629 | { |
7a3aaef8 | 8630 | m = gfc_match_name (name); |
8631 | if (m == MATCH_ERROR) | |
8632 | return m; | |
8633 | if (m == MATCH_NO) | |
61c3b81d | 8634 | { |
7a3aaef8 | 8635 | gfc_error ("Expected binding name at %C"); |
61c3b81d | 8636 | return MATCH_ERROR; |
8637 | } | |
8638 | ||
60e19868 | 8639 | if (num>1 && !gfc_notify_std (GFC_STD_F2008, "PROCEDURE list at %C")) |
7a3aaef8 | 8640 | return MATCH_ERROR; |
7fd88f6e | 8641 | |
7a3aaef8 | 8642 | /* Try to match the '=> target', if it's there. */ |
8643 | target = ifc; | |
8644 | m = gfc_match (" =>"); | |
7fd88f6e | 8645 | if (m == MATCH_ERROR) |
8646 | return m; | |
7a3aaef8 | 8647 | if (m == MATCH_YES) |
7fd88f6e | 8648 | { |
4a12b9ba | 8649 | if (tb.deferred) |
7a3aaef8 | 8650 | { |
0d2b3c9c | 8651 | gfc_error ("%<=> target%> is invalid for DEFERRED binding at %C"); |
7a3aaef8 | 8652 | return MATCH_ERROR; |
8653 | } | |
8654 | ||
8655 | if (!seen_colons) | |
8656 | { | |
0d2b3c9c | 8657 | gfc_error ("%<::%> needed in PROCEDURE binding with explicit target" |
7a3aaef8 | 8658 | " at %C"); |
8659 | return MATCH_ERROR; | |
8660 | } | |
8661 | ||
8662 | m = gfc_match_name (target_buf); | |
8663 | if (m == MATCH_ERROR) | |
8664 | return m; | |
8665 | if (m == MATCH_NO) | |
8666 | { | |
0d2b3c9c | 8667 | gfc_error ("Expected binding target after %<=>%> at %C"); |
7a3aaef8 | 8668 | return MATCH_ERROR; |
8669 | } | |
8670 | target = target_buf; | |
7fd88f6e | 8671 | } |
7fd88f6e | 8672 | |
7a3aaef8 | 8673 | /* If no target was found, it has the same name as the binding. */ |
8674 | if (!target) | |
8675 | target = name; | |
7fd88f6e | 8676 | |
7a3aaef8 | 8677 | /* Get the namespace to insert the symbols into. */ |
8678 | ns = block->f2k_derived; | |
8679 | gcc_assert (ns); | |
7fd88f6e | 8680 | |
7a3aaef8 | 8681 | /* If the binding is DEFERRED, check that the containing type is ABSTRACT. */ |
4a12b9ba | 8682 | if (tb.deferred && !block->attr.abstract) |
7a3aaef8 | 8683 | { |
716da296 | 8684 | gfc_error ("Type %qs containing DEFERRED binding at %C " |
7a3aaef8 | 8685 | "is not ABSTRACT", block->name); |
8686 | return MATCH_ERROR; | |
8687 | } | |
7fd88f6e | 8688 | |
7a3aaef8 | 8689 | /* See if we already have a binding with this name in the symtree which |
9834e1b6 | 8690 | would be an error. If a GENERIC already targeted this binding, it may |
7a3aaef8 | 8691 | be already there but then typebound is still NULL. */ |
8692 | stree = gfc_find_symtree (ns->tb_sym_root, name); | |
e204cb62 | 8693 | if (stree && stree->n.tb) |
7a3aaef8 | 8694 | { |
716da296 | 8695 | gfc_error ("There is already a procedure with binding name %qs for " |
8696 | "the derived type %qs at %C", name, block->name); | |
7a3aaef8 | 8697 | return MATCH_ERROR; |
8698 | } | |
61c3b81d | 8699 | |
7a3aaef8 | 8700 | /* Insert it and set attributes. */ |
7fd88f6e | 8701 | |
e204cb62 | 8702 | if (!stree) |
8703 | { | |
8704 | stree = gfc_new_symtree (&ns->tb_sym_root, name); | |
8705 | gcc_assert (stree); | |
8706 | } | |
4a12b9ba | 8707 | stree->n.tb = gfc_get_typebound_proc (&tb); |
3323e9b1 | 8708 | |
4a12b9ba | 8709 | if (gfc_get_sym_tree (target, gfc_current_ns, &stree->n.tb->u.specific, |
8710 | false)) | |
7a3aaef8 | 8711 | return MATCH_ERROR; |
4a12b9ba | 8712 | gfc_set_sym_referenced (stree->n.tb->u.specific->n.sym); |
8db94b3b | 8713 | |
7a3aaef8 | 8714 | if (gfc_match_eos () == MATCH_YES) |
8715 | return MATCH_YES; | |
8716 | if (gfc_match_char (',') != MATCH_YES) | |
8717 | goto syntax; | |
3323e9b1 | 8718 | } |
7fd88f6e | 8719 | |
7a3aaef8 | 8720 | syntax: |
8721 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
8722 | return MATCH_ERROR; | |
7fd88f6e | 8723 | } |
8724 | ||
8725 | ||
e2f06a48 | 8726 | /* Match a GENERIC procedure binding inside a derived type. */ |
8727 | ||
8728 | match | |
8729 | gfc_match_generic (void) | |
8730 | { | |
8731 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
a36eb9ee | 8732 | char bind_name[GFC_MAX_SYMBOL_LEN + 16]; /* Allow space for OPERATOR(...). */ |
e2f06a48 | 8733 | gfc_symbol* block; |
8734 | gfc_typebound_proc tbattr; /* Used for match_binding_attributes. */ | |
8735 | gfc_typebound_proc* tb; | |
e2f06a48 | 8736 | gfc_namespace* ns; |
a36eb9ee | 8737 | interface_type op_type; |
8738 | gfc_intrinsic_op op; | |
e2f06a48 | 8739 | match m; |
8740 | ||
8741 | /* Check current state. */ | |
8742 | if (gfc_current_state () == COMP_DERIVED) | |
8743 | { | |
8744 | gfc_error ("GENERIC at %C must be inside a derived-type CONTAINS"); | |
8745 | return MATCH_ERROR; | |
8746 | } | |
8747 | if (gfc_current_state () != COMP_DERIVED_CONTAINS) | |
8748 | return MATCH_NO; | |
8749 | block = gfc_state_stack->previous->sym; | |
8750 | ns = block->f2k_derived; | |
8751 | gcc_assert (block && ns); | |
8752 | ||
b3d1387f | 8753 | memset (&tbattr, 0, sizeof (tbattr)); |
8754 | tbattr.where = gfc_current_locus; | |
8755 | ||
e2f06a48 | 8756 | /* See if we get an access-specifier. */ |
64e93293 | 8757 | m = match_binding_attributes (&tbattr, true, false); |
e2f06a48 | 8758 | if (m == MATCH_ERROR) |
8759 | goto error; | |
8760 | ||
8761 | /* Now the colons, those are required. */ | |
8762 | if (gfc_match (" ::") != MATCH_YES) | |
8763 | { | |
0d2b3c9c | 8764 | gfc_error ("Expected %<::%> at %C"); |
e2f06a48 | 8765 | goto error; |
8766 | } | |
8767 | ||
a36eb9ee | 8768 | /* Match the binding name; depending on type (operator / generic) format |
8769 | it for future error messages into bind_name. */ | |
8db94b3b | 8770 | |
a36eb9ee | 8771 | m = gfc_match_generic_spec (&op_type, name, &op); |
e2f06a48 | 8772 | if (m == MATCH_ERROR) |
8773 | return MATCH_ERROR; | |
8774 | if (m == MATCH_NO) | |
8775 | { | |
a36eb9ee | 8776 | gfc_error ("Expected generic name or operator descriptor at %C"); |
e2f06a48 | 8777 | goto error; |
8778 | } | |
8779 | ||
a36eb9ee | 8780 | switch (op_type) |
e2f06a48 | 8781 | { |
a36eb9ee | 8782 | case INTERFACE_GENERIC: |
8783 | snprintf (bind_name, sizeof (bind_name), "%s", name); | |
8784 | break; | |
8db94b3b | 8785 | |
a36eb9ee | 8786 | case INTERFACE_USER_OP: |
8787 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(.%s.)", name); | |
8788 | break; | |
8db94b3b | 8789 | |
a36eb9ee | 8790 | case INTERFACE_INTRINSIC_OP: |
8791 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(%s)", | |
8792 | gfc_op2string (op)); | |
8793 | break; | |
8794 | ||
7e8f55c1 | 8795 | case INTERFACE_NAMELESS: |
8796 | gfc_error ("Malformed GENERIC statement at %C"); | |
8797 | goto error; | |
8798 | break; | |
8799 | ||
a36eb9ee | 8800 | default: |
8801 | gcc_unreachable (); | |
8802 | } | |
3323e9b1 | 8803 | |
a36eb9ee | 8804 | /* Match the required =>. */ |
8805 | if (gfc_match (" =>") != MATCH_YES) | |
8806 | { | |
0d2b3c9c | 8807 | gfc_error ("Expected %<=>%> at %C"); |
a36eb9ee | 8808 | goto error; |
8809 | } | |
8db94b3b | 8810 | |
a36eb9ee | 8811 | /* Try to find existing GENERIC binding with this name / for this operator; |
8812 | if there is something, check that it is another GENERIC and then extend | |
8813 | it rather than building a new node. Otherwise, create it and put it | |
8814 | at the right position. */ | |
8815 | ||
8816 | switch (op_type) | |
8817 | { | |
8818 | case INTERFACE_USER_OP: | |
8819 | case INTERFACE_GENERIC: | |
8820 | { | |
8821 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
8822 | gfc_symtree* st; | |
8823 | ||
8824 | st = gfc_find_symtree (is_op ? ns->tb_uop_root : ns->tb_sym_root, name); | |
8825 | if (st) | |
8826 | { | |
8827 | tb = st->n.tb; | |
8828 | gcc_assert (tb); | |
8829 | } | |
8830 | else | |
8831 | tb = NULL; | |
8832 | ||
8833 | break; | |
8834 | } | |
8835 | ||
8836 | case INTERFACE_INTRINSIC_OP: | |
8837 | tb = ns->tb_op[op]; | |
8838 | break; | |
8839 | ||
8840 | default: | |
8841 | gcc_unreachable (); | |
8842 | } | |
8843 | ||
8844 | if (tb) | |
8845 | { | |
3323e9b1 | 8846 | if (!tb->is_generic) |
e2f06a48 | 8847 | { |
a36eb9ee | 8848 | gcc_assert (op_type == INTERFACE_GENERIC); |
e2f06a48 | 8849 | gfc_error ("There's already a non-generic procedure with binding name" |
716da296 | 8850 | " %qs for the derived type %qs at %C", |
a36eb9ee | 8851 | bind_name, block->name); |
e2f06a48 | 8852 | goto error; |
8853 | } | |
8854 | ||
e2f06a48 | 8855 | if (tb->access != tbattr.access) |
8856 | { | |
8857 | gfc_error ("Binding at %C must have the same access as already" | |
716da296 | 8858 | " defined binding %qs", bind_name); |
e2f06a48 | 8859 | goto error; |
8860 | } | |
8861 | } | |
8862 | else | |
8863 | { | |
4a12b9ba | 8864 | tb = gfc_get_typebound_proc (NULL); |
e2f06a48 | 8865 | tb->where = gfc_current_locus; |
8866 | tb->access = tbattr.access; | |
8867 | tb->is_generic = 1; | |
8868 | tb->u.generic = NULL; | |
a36eb9ee | 8869 | |
8870 | switch (op_type) | |
8871 | { | |
8872 | case INTERFACE_GENERIC: | |
8873 | case INTERFACE_USER_OP: | |
8874 | { | |
8875 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
8876 | gfc_symtree* st; | |
8877 | ||
8878 | st = gfc_new_symtree (is_op ? &ns->tb_uop_root : &ns->tb_sym_root, | |
8879 | name); | |
8880 | gcc_assert (st); | |
8881 | st->n.tb = tb; | |
8882 | ||
8883 | break; | |
8884 | } | |
8db94b3b | 8885 | |
a36eb9ee | 8886 | case INTERFACE_INTRINSIC_OP: |
8887 | ns->tb_op[op] = tb; | |
8888 | break; | |
8889 | ||
8890 | default: | |
8891 | gcc_unreachable (); | |
8892 | } | |
e2f06a48 | 8893 | } |
8894 | ||
8895 | /* Now, match all following names as specific targets. */ | |
8896 | do | |
8897 | { | |
8898 | gfc_symtree* target_st; | |
8899 | gfc_tbp_generic* target; | |
8900 | ||
8901 | m = gfc_match_name (name); | |
8902 | if (m == MATCH_ERROR) | |
8903 | goto error; | |
8904 | if (m == MATCH_NO) | |
8905 | { | |
8906 | gfc_error ("Expected specific binding name at %C"); | |
8907 | goto error; | |
8908 | } | |
8909 | ||
3323e9b1 | 8910 | target_st = gfc_get_tbp_symtree (&ns->tb_sym_root, name); |
e2f06a48 | 8911 | |
8912 | /* See if this is a duplicate specification. */ | |
8913 | for (target = tb->u.generic; target; target = target->next) | |
8914 | if (target_st == target->specific_st) | |
8915 | { | |
716da296 | 8916 | gfc_error ("%qs already defined as specific binding for the" |
8917 | " generic %qs at %C", name, bind_name); | |
e2f06a48 | 8918 | goto error; |
8919 | } | |
8920 | ||
e2f06a48 | 8921 | target = gfc_get_tbp_generic (); |
8922 | target->specific_st = target_st; | |
8923 | target->specific = NULL; | |
8924 | target->next = tb->u.generic; | |
5c0f7d99 | 8925 | target->is_operator = ((op_type == INTERFACE_USER_OP) |
8926 | || (op_type == INTERFACE_INTRINSIC_OP)); | |
e2f06a48 | 8927 | tb->u.generic = target; |
8928 | } | |
8929 | while (gfc_match (" ,") == MATCH_YES); | |
8930 | ||
8931 | /* Here should be the end. */ | |
8932 | if (gfc_match_eos () != MATCH_YES) | |
8933 | { | |
8934 | gfc_error ("Junk after GENERIC binding at %C"); | |
8935 | goto error; | |
8936 | } | |
8937 | ||
8938 | return MATCH_YES; | |
8939 | ||
8940 | error: | |
8941 | return MATCH_ERROR; | |
8942 | } | |
8943 | ||
8944 | ||
223f0f57 | 8945 | /* Match a FINAL declaration inside a derived type. */ |
8946 | ||
8947 | match | |
8948 | gfc_match_final_decl (void) | |
8949 | { | |
8950 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8951 | gfc_symbol* sym; | |
8952 | match m; | |
8953 | gfc_namespace* module_ns; | |
8954 | bool first, last; | |
7fd88f6e | 8955 | gfc_symbol* block; |
223f0f57 | 8956 | |
519651c1 | 8957 | if (gfc_current_form == FORM_FREE) |
8958 | { | |
8959 | char c = gfc_peek_ascii_char (); | |
8960 | if (!gfc_is_whitespace (c) && c != ':') | |
8961 | return MATCH_NO; | |
8962 | } | |
8db94b3b | 8963 | |
7fd88f6e | 8964 | if (gfc_state_stack->state != COMP_DERIVED_CONTAINS) |
223f0f57 | 8965 | { |
519651c1 | 8966 | if (gfc_current_form == FORM_FIXED) |
8967 | return MATCH_NO; | |
8968 | ||
223f0f57 | 8969 | gfc_error ("FINAL declaration at %C must be inside a derived type " |
7fd88f6e | 8970 | "CONTAINS section"); |
223f0f57 | 8971 | return MATCH_ERROR; |
8972 | } | |
8973 | ||
7fd88f6e | 8974 | block = gfc_state_stack->previous->sym; |
8975 | gcc_assert (block); | |
223f0f57 | 8976 | |
7fd88f6e | 8977 | if (!gfc_state_stack->previous || !gfc_state_stack->previous->previous |
8978 | || gfc_state_stack->previous->previous->state != COMP_MODULE) | |
223f0f57 | 8979 | { |
8980 | gfc_error ("Derived type declaration with FINAL at %C must be in the" | |
8981 | " specification part of a MODULE"); | |
8982 | return MATCH_ERROR; | |
8983 | } | |
8984 | ||
8985 | module_ns = gfc_current_ns; | |
8986 | gcc_assert (module_ns); | |
8987 | gcc_assert (module_ns->proc_name->attr.flavor == FL_MODULE); | |
8988 | ||
8989 | /* Match optional ::, don't care about MATCH_YES or MATCH_NO. */ | |
8990 | if (gfc_match (" ::") == MATCH_ERROR) | |
8991 | return MATCH_ERROR; | |
8992 | ||
8993 | /* Match the sequence of procedure names. */ | |
8994 | first = true; | |
8995 | last = false; | |
8996 | do | |
8997 | { | |
8998 | gfc_finalizer* f; | |
8999 | ||
9000 | if (first && gfc_match_eos () == MATCH_YES) | |
9001 | { | |
9002 | gfc_error ("Empty FINAL at %C"); | |
9003 | return MATCH_ERROR; | |
9004 | } | |
9005 | ||
9006 | m = gfc_match_name (name); | |
9007 | if (m == MATCH_NO) | |
9008 | { | |
9009 | gfc_error ("Expected module procedure name at %C"); | |
9010 | return MATCH_ERROR; | |
9011 | } | |
9012 | else if (m != MATCH_YES) | |
9013 | return MATCH_ERROR; | |
9014 | ||
9015 | if (gfc_match_eos () == MATCH_YES) | |
9016 | last = true; | |
9017 | if (!last && gfc_match_char (',') != MATCH_YES) | |
9018 | { | |
0d2b3c9c | 9019 | gfc_error ("Expected %<,%> at %C"); |
223f0f57 | 9020 | return MATCH_ERROR; |
9021 | } | |
9022 | ||
9023 | if (gfc_get_symbol (name, module_ns, &sym)) | |
9024 | { | |
716da296 | 9025 | gfc_error ("Unknown procedure name %qs at %C", name); |
223f0f57 | 9026 | return MATCH_ERROR; |
9027 | } | |
9028 | ||
9029 | /* Mark the symbol as module procedure. */ | |
9030 | if (sym->attr.proc != PROC_MODULE | |
60e19868 | 9031 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
223f0f57 | 9032 | return MATCH_ERROR; |
9033 | ||
9034 | /* Check if we already have this symbol in the list, this is an error. */ | |
7fd88f6e | 9035 | for (f = block->f2k_derived->finalizers; f; f = f->next) |
e449e4dd | 9036 | if (f->proc_sym == sym) |
223f0f57 | 9037 | { |
716da296 | 9038 | gfc_error ("%qs at %C is already defined as FINAL procedure!", |
223f0f57 | 9039 | name); |
9040 | return MATCH_ERROR; | |
9041 | } | |
9042 | ||
9043 | /* Add this symbol to the list of finalizers. */ | |
7fd88f6e | 9044 | gcc_assert (block->f2k_derived); |
223f0f57 | 9045 | ++sym->refs; |
48d8ad5a | 9046 | f = XCNEW (gfc_finalizer); |
e449e4dd | 9047 | f->proc_sym = sym; |
9048 | f->proc_tree = NULL; | |
223f0f57 | 9049 | f->where = gfc_current_locus; |
7fd88f6e | 9050 | f->next = block->f2k_derived->finalizers; |
9051 | block->f2k_derived->finalizers = f; | |
223f0f57 | 9052 | |
9053 | first = false; | |
9054 | } | |
9055 | while (!last); | |
9056 | ||
9057 | return MATCH_YES; | |
9058 | } | |
36b0a1b0 | 9059 | |
9060 | ||
9061 | const ext_attr_t ext_attr_list[] = { | |
fa76a552 | 9062 | { "dllimport", EXT_ATTR_DLLIMPORT, "dllimport" }, |
9063 | { "dllexport", EXT_ATTR_DLLEXPORT, "dllexport" }, | |
9064 | { "cdecl", EXT_ATTR_CDECL, "cdecl" }, | |
9065 | { "stdcall", EXT_ATTR_STDCALL, "stdcall" }, | |
9066 | { "fastcall", EXT_ATTR_FASTCALL, "fastcall" }, | |
9067 | { "no_arg_check", EXT_ATTR_NO_ARG_CHECK, NULL }, | |
9068 | { NULL, EXT_ATTR_LAST, NULL } | |
36b0a1b0 | 9069 | }; |
9070 | ||
9071 | /* Match a !GCC$ ATTRIBUTES statement of the form: | |
9072 | !GCC$ ATTRIBUTES attribute-list :: var-name [, var-name] ... | |
9073 | When we come here, we have already matched the !GCC$ ATTRIBUTES string. | |
9074 | ||
9075 | TODO: We should support all GCC attributes using the same syntax for | |
9076 | the attribute list, i.e. the list in C | |
9077 | __attributes(( attribute-list )) | |
9078 | matches then | |
9079 | !GCC$ ATTRIBUTES attribute-list :: | |
9080 | Cf. c-parser.c's c_parser_attributes; the data can then directly be | |
9081 | saved into a TREE. | |
9082 | ||
9083 | As there is absolutely no risk of confusion, we should never return | |
9084 | MATCH_NO. */ | |
9085 | match | |
9086 | gfc_match_gcc_attributes (void) | |
8db94b3b | 9087 | { |
36b0a1b0 | 9088 | symbol_attribute attr; |
9089 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9090 | unsigned id; | |
9091 | gfc_symbol *sym; | |
9092 | match m; | |
9093 | ||
9094 | gfc_clear_attr (&attr); | |
9095 | for(;;) | |
9096 | { | |
9097 | char ch; | |
9098 | ||
9099 | if (gfc_match_name (name) != MATCH_YES) | |
9100 | return MATCH_ERROR; | |
9101 | ||
9102 | for (id = 0; id < EXT_ATTR_LAST; id++) | |
9103 | if (strcmp (name, ext_attr_list[id].name) == 0) | |
9104 | break; | |
9105 | ||
9106 | if (id == EXT_ATTR_LAST) | |
9107 | { | |
9108 | gfc_error ("Unknown attribute in !GCC$ ATTRIBUTES statement at %C"); | |
9109 | return MATCH_ERROR; | |
9110 | } | |
9111 | ||
60e19868 | 9112 | if (!gfc_add_ext_attribute (&attr, (ext_attr_id_t)id, &gfc_current_locus)) |
36b0a1b0 | 9113 | return MATCH_ERROR; |
9114 | ||
9115 | gfc_gobble_whitespace (); | |
9116 | ch = gfc_next_ascii_char (); | |
9117 | if (ch == ':') | |
9118 | { | |
9119 | /* This is the successful exit condition for the loop. */ | |
9120 | if (gfc_next_ascii_char () == ':') | |
9121 | break; | |
9122 | } | |
9123 | ||
9124 | if (ch == ',') | |
9125 | continue; | |
9126 | ||
9127 | goto syntax; | |
9128 | } | |
9129 | ||
9130 | if (gfc_match_eos () == MATCH_YES) | |
9131 | goto syntax; | |
9132 | ||
9133 | for(;;) | |
9134 | { | |
9135 | m = gfc_match_name (name); | |
9136 | if (m != MATCH_YES) | |
9137 | return m; | |
9138 | ||
9139 | if (find_special (name, &sym, true)) | |
9140 | return MATCH_ERROR; | |
8db94b3b | 9141 | |
36b0a1b0 | 9142 | sym->attr.ext_attr |= attr.ext_attr; |
9143 | ||
9144 | if (gfc_match_eos () == MATCH_YES) | |
9145 | break; | |
9146 | ||
9147 | if (gfc_match_char (',') != MATCH_YES) | |
9148 | goto syntax; | |
9149 | } | |
9150 | ||
9151 | return MATCH_YES; | |
9152 | ||
9153 | syntax: | |
9154 | gfc_error ("Syntax error in !GCC$ ATTRIBUTES statement at %C"); | |
9155 | return MATCH_ERROR; | |
9156 | } |