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4ee9c684 | 1 | /* Declaration statement matcher |
f1717362 | 2 | Copyright (C) 2002-2016 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" |
cbbac028 | 31 | |
32 | /* Macros to access allocate memory for gfc_data_variable, | |
33 | gfc_data_value and gfc_data. */ | |
48d8ad5a | 34 | #define gfc_get_data_variable() XCNEW (gfc_data_variable) |
35 | #define gfc_get_data_value() XCNEW (gfc_data_value) | |
36 | #define gfc_get_data() XCNEW (gfc_data) | |
cbbac028 | 37 | |
38 | ||
60e19868 | 39 | static bool set_binding_label (const char **, const char *, int); |
7b2060ba | 40 | |
41 | ||
36ae04f2 | 42 | /* This flag is set if an old-style length selector is matched |
4ee9c684 | 43 | during a type-declaration statement. */ |
44 | ||
45 | static int old_char_selector; | |
46 | ||
5739e54e | 47 | /* When variables acquire types and attributes from a declaration |
4ee9c684 | 48 | statement, they get them from the following static variables. The |
49 | first part of a declaration sets these variables and the second | |
50 | part copies these into symbol structures. */ | |
51 | ||
52 | static gfc_typespec current_ts; | |
53 | ||
54 | static symbol_attribute current_attr; | |
55 | static gfc_array_spec *current_as; | |
56 | static int colon_seen; | |
57 | ||
c5d33754 | 58 | /* The current binding label (if any). */ |
1d8a57d8 | 59 | static const char* curr_binding_label; |
c5d33754 | 60 | /* Need to know how many identifiers are on the current data declaration |
61 | line in case we're given the BIND(C) attribute with a NAME= specifier. */ | |
62 | static int num_idents_on_line; | |
63 | /* Need to know if a NAME= specifier was found during gfc_match_bind_c so we | |
64 | can supply a name if the curr_binding_label is nil and NAME= was not. */ | |
65 | static int has_name_equals = 0; | |
66 | ||
3b6a4b41 | 67 | /* Initializer of the previous enumerator. */ |
68 | ||
69 | static gfc_expr *last_initializer; | |
70 | ||
71 | /* History of all the enumerators is maintained, so that | |
72 | kind values of all the enumerators could be updated depending | |
73 | upon the maximum initialized value. */ | |
74 | ||
75 | typedef struct enumerator_history | |
76 | { | |
77 | gfc_symbol *sym; | |
78 | gfc_expr *initializer; | |
79 | struct enumerator_history *next; | |
80 | } | |
81 | enumerator_history; | |
82 | ||
83 | /* Header of enum history chain. */ | |
84 | ||
85 | static enumerator_history *enum_history = NULL; | |
86 | ||
87 | /* Pointer of enum history node containing largest initializer. */ | |
88 | ||
89 | static enumerator_history *max_enum = NULL; | |
90 | ||
4ee9c684 | 91 | /* gfc_new_block points to the symbol of a newly matched block. */ |
92 | ||
93 | gfc_symbol *gfc_new_block; | |
94 | ||
077932f9 | 95 | bool gfc_matching_function; |
67a51c8e | 96 | |
4ee9c684 | 97 | |
b4f45d02 | 98 | /********************* DATA statement subroutines *********************/ |
99 | ||
1bfea7e8 | 100 | static bool in_match_data = false; |
101 | ||
102 | bool | |
103 | gfc_in_match_data (void) | |
104 | { | |
105 | return in_match_data; | |
106 | } | |
107 | ||
cbbac028 | 108 | static void |
109 | set_in_match_data (bool set_value) | |
1bfea7e8 | 110 | { |
111 | in_match_data = set_value; | |
112 | } | |
113 | ||
b4f45d02 | 114 | /* Free a gfc_data_variable structure and everything beneath it. */ |
115 | ||
116 | static void | |
1a9745d2 | 117 | free_variable (gfc_data_variable *p) |
b4f45d02 | 118 | { |
119 | gfc_data_variable *q; | |
120 | ||
121 | for (; p; p = q) | |
122 | { | |
123 | q = p->next; | |
124 | gfc_free_expr (p->expr); | |
125 | gfc_free_iterator (&p->iter, 0); | |
126 | free_variable (p->list); | |
434f0922 | 127 | free (p); |
b4f45d02 | 128 | } |
129 | } | |
130 | ||
131 | ||
132 | /* Free a gfc_data_value structure and everything beneath it. */ | |
133 | ||
134 | static void | |
1a9745d2 | 135 | free_value (gfc_data_value *p) |
b4f45d02 | 136 | { |
137 | gfc_data_value *q; | |
138 | ||
139 | for (; p; p = q) | |
140 | { | |
141 | q = p->next; | |
2d4466dd | 142 | mpz_clear (p->repeat); |
b4f45d02 | 143 | gfc_free_expr (p->expr); |
434f0922 | 144 | free (p); |
b4f45d02 | 145 | } |
146 | } | |
147 | ||
148 | ||
149 | /* Free a list of gfc_data structures. */ | |
150 | ||
151 | void | |
1a9745d2 | 152 | gfc_free_data (gfc_data *p) |
b4f45d02 | 153 | { |
154 | gfc_data *q; | |
155 | ||
156 | for (; p; p = q) | |
157 | { | |
158 | q = p->next; | |
b4f45d02 | 159 | free_variable (p->var); |
160 | free_value (p->value); | |
434f0922 | 161 | free (p); |
b4f45d02 | 162 | } |
163 | } | |
164 | ||
165 | ||
af29c1f0 | 166 | /* Free all data in a namespace. */ |
1a9745d2 | 167 | |
af29c1f0 | 168 | static void |
f6d0e37a | 169 | gfc_free_data_all (gfc_namespace *ns) |
af29c1f0 | 170 | { |
171 | gfc_data *d; | |
172 | ||
173 | for (;ns->data;) | |
174 | { | |
175 | d = ns->data->next; | |
434f0922 | 176 | free (ns->data); |
af29c1f0 | 177 | ns->data = d; |
178 | } | |
179 | } | |
180 | ||
388ce1b2 | 181 | /* Reject data parsed since the last restore point was marked. */ |
182 | ||
183 | void | |
184 | gfc_reject_data (gfc_namespace *ns) | |
185 | { | |
186 | gfc_data *d; | |
187 | ||
188 | while (ns->data && ns->data != ns->old_data) | |
189 | { | |
190 | d = ns->data->next; | |
191 | free (ns->data); | |
192 | ns->data = d; | |
193 | } | |
194 | } | |
af29c1f0 | 195 | |
b4f45d02 | 196 | static match var_element (gfc_data_variable *); |
197 | ||
198 | /* Match a list of variables terminated by an iterator and a right | |
199 | parenthesis. */ | |
200 | ||
201 | static match | |
1a9745d2 | 202 | var_list (gfc_data_variable *parent) |
b4f45d02 | 203 | { |
204 | gfc_data_variable *tail, var; | |
205 | match m; | |
206 | ||
207 | m = var_element (&var); | |
208 | if (m == MATCH_ERROR) | |
209 | return MATCH_ERROR; | |
210 | if (m == MATCH_NO) | |
211 | goto syntax; | |
212 | ||
213 | tail = gfc_get_data_variable (); | |
214 | *tail = var; | |
215 | ||
216 | parent->list = tail; | |
217 | ||
218 | for (;;) | |
219 | { | |
220 | if (gfc_match_char (',') != MATCH_YES) | |
221 | goto syntax; | |
222 | ||
223 | m = gfc_match_iterator (&parent->iter, 1); | |
224 | if (m == MATCH_YES) | |
225 | break; | |
226 | if (m == MATCH_ERROR) | |
227 | return MATCH_ERROR; | |
228 | ||
229 | m = var_element (&var); | |
230 | if (m == MATCH_ERROR) | |
231 | return MATCH_ERROR; | |
232 | if (m == MATCH_NO) | |
233 | goto syntax; | |
234 | ||
235 | tail->next = gfc_get_data_variable (); | |
236 | tail = tail->next; | |
237 | ||
238 | *tail = var; | |
239 | } | |
240 | ||
241 | if (gfc_match_char (')') != MATCH_YES) | |
242 | goto syntax; | |
243 | return MATCH_YES; | |
244 | ||
245 | syntax: | |
246 | gfc_syntax_error (ST_DATA); | |
247 | return MATCH_ERROR; | |
248 | } | |
249 | ||
250 | ||
251 | /* Match a single element in a data variable list, which can be a | |
252 | variable-iterator list. */ | |
253 | ||
254 | static match | |
c1977dbe | 255 | var_element (gfc_data_variable *new_var) |
b4f45d02 | 256 | { |
257 | match m; | |
258 | gfc_symbol *sym; | |
259 | ||
c1977dbe | 260 | memset (new_var, 0, sizeof (gfc_data_variable)); |
b4f45d02 | 261 | |
262 | if (gfc_match_char ('(') == MATCH_YES) | |
c1977dbe | 263 | return var_list (new_var); |
b4f45d02 | 264 | |
c1977dbe | 265 | m = gfc_match_variable (&new_var->expr, 0); |
b4f45d02 | 266 | if (m != MATCH_YES) |
267 | return m; | |
268 | ||
c1977dbe | 269 | sym = new_var->expr->symtree->n.sym; |
b4f45d02 | 270 | |
40de255b | 271 | /* Symbol should already have an associated type. */ |
60e19868 | 272 | if (!gfc_check_symbol_typed (sym, gfc_current_ns, false, gfc_current_locus)) |
40de255b | 273 | return MATCH_ERROR; |
274 | ||
1a9745d2 | 275 | if (!sym->attr.function && gfc_current_ns->parent |
276 | && gfc_current_ns->parent == sym->ns) | |
b4f45d02 | 277 | { |
716da296 | 278 | gfc_error ("Host associated variable %qs may not be in the DATA " |
7698a624 | 279 | "statement at %C", sym->name); |
b4f45d02 | 280 | return MATCH_ERROR; |
281 | } | |
282 | ||
c8df3e9c | 283 | if (gfc_current_state () != COMP_BLOCK_DATA |
1a9745d2 | 284 | && sym->attr.in_common |
60e19868 | 285 | && !gfc_notify_std (GFC_STD_GNU, "initialization of " |
0d2b3c9c | 286 | "common block variable %qs in DATA statement at %C", |
60e19868 | 287 | sym->name)) |
c8df3e9c | 288 | return MATCH_ERROR; |
b4f45d02 | 289 | |
60e19868 | 290 | if (!gfc_add_data (&sym->attr, sym->name, &new_var->expr->where)) |
b4f45d02 | 291 | return MATCH_ERROR; |
292 | ||
293 | return MATCH_YES; | |
294 | } | |
295 | ||
296 | ||
297 | /* Match the top-level list of data variables. */ | |
298 | ||
299 | static match | |
1a9745d2 | 300 | top_var_list (gfc_data *d) |
b4f45d02 | 301 | { |
c1977dbe | 302 | gfc_data_variable var, *tail, *new_var; |
b4f45d02 | 303 | match m; |
304 | ||
305 | tail = NULL; | |
306 | ||
307 | for (;;) | |
308 | { | |
309 | m = var_element (&var); | |
310 | if (m == MATCH_NO) | |
311 | goto syntax; | |
312 | if (m == MATCH_ERROR) | |
313 | return MATCH_ERROR; | |
314 | ||
c1977dbe | 315 | new_var = gfc_get_data_variable (); |
316 | *new_var = var; | |
b4f45d02 | 317 | |
318 | if (tail == NULL) | |
c1977dbe | 319 | d->var = new_var; |
b4f45d02 | 320 | else |
c1977dbe | 321 | tail->next = new_var; |
b4f45d02 | 322 | |
c1977dbe | 323 | tail = new_var; |
b4f45d02 | 324 | |
325 | if (gfc_match_char ('/') == MATCH_YES) | |
326 | break; | |
327 | if (gfc_match_char (',') != MATCH_YES) | |
328 | goto syntax; | |
329 | } | |
330 | ||
331 | return MATCH_YES; | |
332 | ||
333 | syntax: | |
334 | gfc_syntax_error (ST_DATA); | |
af29c1f0 | 335 | gfc_free_data_all (gfc_current_ns); |
b4f45d02 | 336 | return MATCH_ERROR; |
337 | } | |
338 | ||
339 | ||
340 | static match | |
1a9745d2 | 341 | match_data_constant (gfc_expr **result) |
b4f45d02 | 342 | { |
343 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c2958b6b | 344 | gfc_symbol *sym, *dt_sym = NULL; |
b4f45d02 | 345 | gfc_expr *expr; |
346 | match m; | |
096d4ad9 | 347 | locus old_loc; |
b4f45d02 | 348 | |
349 | m = gfc_match_literal_constant (&expr, 1); | |
350 | if (m == MATCH_YES) | |
351 | { | |
352 | *result = expr; | |
353 | return MATCH_YES; | |
354 | } | |
355 | ||
356 | if (m == MATCH_ERROR) | |
357 | return MATCH_ERROR; | |
358 | ||
359 | m = gfc_match_null (result); | |
360 | if (m != MATCH_NO) | |
361 | return m; | |
362 | ||
096d4ad9 | 363 | old_loc = gfc_current_locus; |
364 | ||
365 | /* Should this be a structure component, try to match it | |
366 | before matching a name. */ | |
367 | m = gfc_match_rvalue (result); | |
368 | if (m == MATCH_ERROR) | |
369 | return m; | |
370 | ||
371 | if (m == MATCH_YES && (*result)->expr_type == EXPR_STRUCTURE) | |
372 | { | |
60e19868 | 373 | if (!gfc_simplify_expr (*result, 0)) |
096d4ad9 | 374 | m = MATCH_ERROR; |
375 | return m; | |
376 | } | |
021ff494 | 377 | else if (m == MATCH_YES) |
378 | gfc_free_expr (*result); | |
096d4ad9 | 379 | |
380 | gfc_current_locus = old_loc; | |
381 | ||
b4f45d02 | 382 | m = gfc_match_name (name); |
383 | if (m != MATCH_YES) | |
384 | return m; | |
385 | ||
386 | if (gfc_find_symbol (name, NULL, 1, &sym)) | |
387 | return MATCH_ERROR; | |
388 | ||
c2958b6b | 389 | if (sym && sym->attr.generic) |
390 | dt_sym = gfc_find_dt_in_generic (sym); | |
391 | ||
b4f45d02 | 392 | if (sym == NULL |
c2958b6b | 393 | || (sym->attr.flavor != FL_PARAMETER |
d7cd448a | 394 | && (!dt_sym || !gfc_fl_struct (dt_sym->attr.flavor)))) |
b4f45d02 | 395 | { |
716da296 | 396 | gfc_error ("Symbol %qs must be a PARAMETER in DATA statement at %C", |
b4f45d02 | 397 | name); |
fb5574d7 | 398 | *result = NULL; |
b4f45d02 | 399 | return MATCH_ERROR; |
400 | } | |
d7cd448a | 401 | else if (dt_sym && gfc_fl_struct (dt_sym->attr.flavor)) |
c2958b6b | 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 | ||
c286c294 | 556 | /* Before parsing the rest of a DATA statement, check F2008:c1206. */ |
557 | if ((gfc_current_state () == COMP_FUNCTION | |
558 | || gfc_current_state () == COMP_SUBROUTINE) | |
559 | && gfc_state_stack->previous->state == COMP_INTERFACE) | |
560 | { | |
561 | gfc_error ("DATA statement at %C cannot appear within an INTERFACE"); | |
562 | return MATCH_ERROR; | |
563 | } | |
564 | ||
cbbac028 | 565 | set_in_match_data (true); |
1bfea7e8 | 566 | |
b4f45d02 | 567 | for (;;) |
568 | { | |
c1977dbe | 569 | new_data = gfc_get_data (); |
570 | new_data->where = gfc_current_locus; | |
b4f45d02 | 571 | |
c1977dbe | 572 | m = top_var_list (new_data); |
b4f45d02 | 573 | if (m != MATCH_YES) |
574 | goto cleanup; | |
575 | ||
c1977dbe | 576 | m = top_val_list (new_data); |
b4f45d02 | 577 | if (m != MATCH_YES) |
578 | goto cleanup; | |
579 | ||
c1977dbe | 580 | new_data->next = gfc_current_ns->data; |
581 | gfc_current_ns->data = new_data; | |
b4f45d02 | 582 | |
583 | if (gfc_match_eos () == MATCH_YES) | |
584 | break; | |
585 | ||
586 | gfc_match_char (','); /* Optional comma */ | |
587 | } | |
588 | ||
cbbac028 | 589 | set_in_match_data (false); |
1bfea7e8 | 590 | |
b4f45d02 | 591 | if (gfc_pure (NULL)) |
592 | { | |
593 | gfc_error ("DATA statement at %C is not allowed in a PURE procedure"); | |
594 | return MATCH_ERROR; | |
595 | } | |
c77badf3 | 596 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
8b0a2e85 | 597 | |
b4f45d02 | 598 | return MATCH_YES; |
599 | ||
600 | cleanup: | |
cbbac028 | 601 | set_in_match_data (false); |
c1977dbe | 602 | gfc_free_data (new_data); |
b4f45d02 | 603 | return MATCH_ERROR; |
604 | } | |
605 | ||
606 | ||
607 | /************************ Declaration statements *********************/ | |
608 | ||
e97ac7c0 | 609 | |
d7cd448a | 610 | /* Like gfc_match_init_expr, but matches a 'clist' (old-style initialization |
611 | list). The difference here is the expression is a list of constants | |
7d7125df | 612 | and is surrounded by '/'. |
d7cd448a | 613 | The typespec ts must match the typespec of the variable which the |
614 | clist is initializing. | |
7d7125df | 615 | The arrayspec tells whether this should match a list of constants |
d7cd448a | 616 | corresponding to array elements or a scalar (as == NULL). */ |
617 | ||
618 | static match | |
619 | match_clist_expr (gfc_expr **result, gfc_typespec *ts, gfc_array_spec *as) | |
620 | { | |
621 | gfc_constructor_base array_head = NULL; | |
622 | gfc_expr *expr = NULL; | |
623 | match m; | |
624 | locus where; | |
625 | mpz_t repeat, size; | |
626 | bool scalar; | |
627 | int cmp; | |
628 | ||
629 | gcc_assert (ts); | |
630 | ||
631 | mpz_init_set_ui (repeat, 0); | |
632 | mpz_init (size); | |
633 | scalar = !as || !as->rank; | |
634 | ||
635 | /* We have already matched '/' - now look for a constant list, as with | |
636 | top_val_list from decl.c, but append the result to an array. */ | |
637 | if (gfc_match ("/") == MATCH_YES) | |
638 | { | |
639 | gfc_error ("Empty old style initializer list at %C"); | |
640 | goto cleanup; | |
641 | } | |
642 | ||
643 | where = gfc_current_locus; | |
644 | for (;;) | |
645 | { | |
646 | m = match_data_constant (&expr); | |
647 | if (m != MATCH_YES) | |
648 | expr = NULL; /* match_data_constant may set expr to garbage */ | |
649 | if (m == MATCH_NO) | |
650 | goto syntax; | |
651 | if (m == MATCH_ERROR) | |
652 | goto cleanup; | |
653 | ||
654 | /* Found r in repeat spec r*c; look for the constant to repeat. */ | |
655 | if ( gfc_match_char ('*') == MATCH_YES) | |
656 | { | |
657 | if (scalar) | |
658 | { | |
659 | gfc_error ("Repeat spec invalid in scalar initializer at %C"); | |
660 | goto cleanup; | |
661 | } | |
662 | if (expr->ts.type != BT_INTEGER) | |
663 | { | |
664 | gfc_error ("Repeat spec must be an integer at %C"); | |
665 | goto cleanup; | |
666 | } | |
667 | mpz_set (repeat, expr->value.integer); | |
668 | gfc_free_expr (expr); | |
669 | expr = NULL; | |
670 | ||
671 | m = match_data_constant (&expr); | |
672 | if (m == MATCH_NO) | |
673 | gfc_error ("Expected data constant after repeat spec at %C"); | |
674 | if (m != MATCH_YES) | |
675 | goto cleanup; | |
676 | } | |
677 | /* No repeat spec, we matched the data constant itself. */ | |
678 | else | |
679 | mpz_set_ui (repeat, 1); | |
680 | ||
681 | if (!scalar) | |
682 | { | |
683 | /* Add the constant initializer as many times as repeated. */ | |
684 | for (; mpz_cmp_ui (repeat, 0) > 0; mpz_sub_ui (repeat, repeat, 1)) | |
685 | { | |
686 | /* Make sure types of elements match */ | |
687 | if(ts && !gfc_compare_types (&expr->ts, ts) | |
688 | && !gfc_convert_type (expr, ts, 1)) | |
689 | goto cleanup; | |
690 | ||
691 | gfc_constructor_append_expr (&array_head, | |
692 | gfc_copy_expr (expr), &gfc_current_locus); | |
693 | } | |
694 | ||
695 | gfc_free_expr (expr); | |
696 | expr = NULL; | |
697 | } | |
698 | ||
699 | /* For scalar initializers quit after one element. */ | |
700 | else | |
701 | { | |
702 | if(gfc_match_char ('/') != MATCH_YES) | |
703 | { | |
704 | gfc_error ("End of scalar initializer expected at %C"); | |
705 | goto cleanup; | |
706 | } | |
707 | break; | |
708 | } | |
709 | ||
710 | if (gfc_match_char ('/') == MATCH_YES) | |
711 | break; | |
712 | if (gfc_match_char (',') == MATCH_NO) | |
713 | goto syntax; | |
714 | } | |
715 | ||
716 | /* Set up expr as an array constructor. */ | |
717 | if (!scalar) | |
718 | { | |
719 | expr = gfc_get_array_expr (ts->type, ts->kind, &where); | |
720 | expr->ts = *ts; | |
721 | expr->value.constructor = array_head; | |
722 | ||
723 | expr->rank = as->rank; | |
724 | expr->shape = gfc_get_shape (expr->rank); | |
725 | ||
726 | /* Validate sizes. */ | |
727 | gcc_assert (gfc_array_size (expr, &size)); | |
728 | gcc_assert (spec_size (as, &repeat)); | |
729 | cmp = mpz_cmp (size, repeat); | |
730 | if (cmp < 0) | |
731 | gfc_error ("Not enough elements in array initializer at %C"); | |
732 | else if (cmp > 0) | |
733 | gfc_error ("Too many elements in array initializer at %C"); | |
734 | if (cmp) | |
735 | goto cleanup; | |
736 | } | |
737 | ||
738 | /* Make sure scalar types match. */ | |
739 | else if (!gfc_compare_types (&expr->ts, ts) | |
740 | && !gfc_convert_type (expr, ts, 1)) | |
741 | goto cleanup; | |
742 | ||
743 | if (expr->ts.u.cl) | |
744 | expr->ts.u.cl->length_from_typespec = 1; | |
745 | ||
746 | *result = expr; | |
747 | mpz_clear (size); | |
748 | mpz_clear (repeat); | |
749 | return MATCH_YES; | |
750 | ||
751 | syntax: | |
752 | gfc_error ("Syntax error in old style initializer list at %C"); | |
753 | ||
754 | cleanup: | |
755 | if (expr) | |
756 | expr->value.constructor = NULL; | |
757 | gfc_free_expr (expr); | |
758 | gfc_constructor_free (array_head); | |
759 | mpz_clear (size); | |
760 | mpz_clear (repeat); | |
761 | return MATCH_ERROR; | |
762 | } | |
763 | ||
764 | ||
df084314 | 765 | /* Auxiliary function to merge DIMENSION and CODIMENSION array specs. */ |
e97ac7c0 | 766 | |
60e19868 | 767 | static bool |
e97ac7c0 | 768 | merge_array_spec (gfc_array_spec *from, gfc_array_spec *to, bool copy) |
769 | { | |
770 | int i; | |
771 | ||
9b58b4c7 | 772 | if ((from->type == AS_ASSUMED_RANK && to->corank) |
773 | || (to->type == AS_ASSUMED_RANK && from->corank)) | |
774 | { | |
775 | gfc_error ("The assumed-rank array at %C shall not have a codimension"); | |
60e19868 | 776 | return false; |
9b58b4c7 | 777 | } |
f00f6dd6 | 778 | |
e97ac7c0 | 779 | if (to->rank == 0 && from->rank > 0) |
780 | { | |
781 | to->rank = from->rank; | |
782 | to->type = from->type; | |
783 | to->cray_pointee = from->cray_pointee; | |
784 | to->cp_was_assumed = from->cp_was_assumed; | |
785 | ||
786 | for (i = 0; i < to->corank; i++) | |
787 | { | |
788 | to->lower[from->rank + i] = to->lower[i]; | |
789 | to->upper[from->rank + i] = to->upper[i]; | |
790 | } | |
791 | for (i = 0; i < from->rank; i++) | |
792 | { | |
793 | if (copy) | |
794 | { | |
795 | to->lower[i] = gfc_copy_expr (from->lower[i]); | |
796 | to->upper[i] = gfc_copy_expr (from->upper[i]); | |
797 | } | |
798 | else | |
799 | { | |
800 | to->lower[i] = from->lower[i]; | |
801 | to->upper[i] = from->upper[i]; | |
802 | } | |
803 | } | |
804 | } | |
805 | else if (to->corank == 0 && from->corank > 0) | |
806 | { | |
807 | to->corank = from->corank; | |
808 | to->cotype = from->cotype; | |
809 | ||
810 | for (i = 0; i < from->corank; i++) | |
811 | { | |
812 | if (copy) | |
813 | { | |
814 | to->lower[to->rank + i] = gfc_copy_expr (from->lower[i]); | |
815 | to->upper[to->rank + i] = gfc_copy_expr (from->upper[i]); | |
816 | } | |
817 | else | |
818 | { | |
819 | to->lower[to->rank + i] = from->lower[i]; | |
820 | to->upper[to->rank + i] = from->upper[i]; | |
821 | } | |
822 | } | |
823 | } | |
9b58b4c7 | 824 | |
60e19868 | 825 | return true; |
e97ac7c0 | 826 | } |
827 | ||
828 | ||
4ee9c684 | 829 | /* Match an intent specification. Since this can only happen after an |
830 | INTENT word, a legal intent-spec must follow. */ | |
831 | ||
832 | static sym_intent | |
833 | match_intent_spec (void) | |
834 | { | |
835 | ||
836 | if (gfc_match (" ( in out )") == MATCH_YES) | |
837 | return INTENT_INOUT; | |
838 | if (gfc_match (" ( in )") == MATCH_YES) | |
839 | return INTENT_IN; | |
840 | if (gfc_match (" ( out )") == MATCH_YES) | |
841 | return INTENT_OUT; | |
842 | ||
843 | gfc_error ("Bad INTENT specification at %C"); | |
844 | return INTENT_UNKNOWN; | |
845 | } | |
846 | ||
847 | ||
848 | /* Matches a character length specification, which is either a | |
3e715c81 | 849 | specification expression, '*', or ':'. */ |
4ee9c684 | 850 | |
851 | static match | |
3e715c81 | 852 | char_len_param_value (gfc_expr **expr, bool *deferred) |
4ee9c684 | 853 | { |
294d58d3 | 854 | match m; |
855 | ||
3e715c81 | 856 | *expr = NULL; |
857 | *deferred = false; | |
858 | ||
4ee9c684 | 859 | if (gfc_match_char ('*') == MATCH_YES) |
3e715c81 | 860 | return MATCH_YES; |
861 | ||
862 | if (gfc_match_char (':') == MATCH_YES) | |
4ee9c684 | 863 | { |
34bf7ba5 | 864 | if (!gfc_notify_std (GFC_STD_F2003, "deferred type parameter at %C")) |
3e715c81 | 865 | return MATCH_ERROR; |
866 | ||
867 | *deferred = true; | |
868 | ||
4ee9c684 | 869 | return MATCH_YES; |
870 | } | |
871 | ||
294d58d3 | 872 | m = gfc_match_expr (expr); |
40de255b | 873 | |
34bf7ba5 | 874 | if (m == MATCH_NO || m == MATCH_ERROR) |
875 | return m; | |
876 | ||
877 | if (!gfc_expr_check_typed (*expr, gfc_current_ns, false)) | |
40de255b | 878 | return MATCH_ERROR; |
879 | ||
34bf7ba5 | 880 | if ((*expr)->expr_type == EXPR_FUNCTION) |
294d58d3 | 881 | { |
9c5a8acc | 882 | if ((*expr)->ts.type == BT_INTEGER |
883 | || ((*expr)->ts.type == BT_UNKNOWN | |
884 | && strcmp((*expr)->symtree->name, "null") != 0)) | |
885 | return MATCH_YES; | |
886 | ||
887 | goto syntax; | |
888 | } | |
889 | else if ((*expr)->expr_type == EXPR_CONSTANT) | |
890 | { | |
891 | /* F2008, 4.4.3.1: The length is a type parameter; its kind is | |
892 | processor dependent and its value is greater than or equal to zero. | |
893 | F2008, 4.4.3.2: If the character length parameter value evaluates | |
894 | to a negative value, the length of character entities declared | |
895 | is zero. */ | |
896 | ||
897 | if ((*expr)->ts.type == BT_INTEGER) | |
294d58d3 | 898 | { |
9c5a8acc | 899 | if (mpz_cmp_si ((*expr)->value.integer, 0) < 0) |
900 | mpz_set_si ((*expr)->value.integer, 0); | |
294d58d3 | 901 | } |
9c5a8acc | 902 | else |
903 | goto syntax; | |
294d58d3 | 904 | } |
9c5a8acc | 905 | else if ((*expr)->expr_type == EXPR_ARRAY) |
906 | goto syntax; | |
907 | else if ((*expr)->expr_type == EXPR_VARIABLE) | |
908 | { | |
165b422e | 909 | bool t; |
9c5a8acc | 910 | gfc_expr *e; |
911 | ||
912 | e = gfc_copy_expr (*expr); | |
913 | ||
914 | /* This catches the invalid code "[character(m(2:3)) :: 'x', 'y']", | |
915 | which causes an ICE if gfc_reduce_init_expr() is called. */ | |
47977082 | 916 | if (e->ref && e->ref->type == REF_ARRAY |
917 | && e->ref->u.ar.type == AR_UNKNOWN | |
9c5a8acc | 918 | && e->ref->u.ar.dimen_type[0] == DIMEN_RANGE) |
919 | goto syntax; | |
920 | ||
165b422e | 921 | t = gfc_reduce_init_expr (e); |
922 | ||
42f172d0 | 923 | if (!t && e->ts.type == BT_UNKNOWN |
924 | && e->symtree->n.sym->attr.untyped == 1 | |
925 | && (e->symtree->n.sym->ns->seen_implicit_none == 1 | |
926 | || e->symtree->n.sym->ns->parent->seen_implicit_none == 1)) | |
165b422e | 927 | { |
928 | gfc_free_expr (e); | |
929 | goto syntax; | |
930 | } | |
34bf7ba5 | 931 | |
47977082 | 932 | if ((e->ref && e->ref->type == REF_ARRAY |
76e207a9 | 933 | && e->ref->u.ar.type != AR_ELEMENT) |
9c5a8acc | 934 | || (!e->ref && e->expr_type == EXPR_ARRAY)) |
935 | { | |
936 | gfc_free_expr (e); | |
937 | goto syntax; | |
938 | } | |
939 | ||
940 | gfc_free_expr (e); | |
941 | } | |
34bf7ba5 | 942 | |
294d58d3 | 943 | return m; |
944 | ||
945 | syntax: | |
9c5a8acc | 946 | gfc_error ("Scalar INTEGER expression expected at %L", &(*expr)->where); |
294d58d3 | 947 | return MATCH_ERROR; |
4ee9c684 | 948 | } |
949 | ||
950 | ||
951 | /* A character length is a '*' followed by a literal integer or a | |
952 | char_len_param_value in parenthesis. */ | |
953 | ||
954 | static match | |
ae0426ce | 955 | match_char_length (gfc_expr **expr, bool *deferred, bool obsolescent_check) |
4ee9c684 | 956 | { |
3bd3b616 | 957 | int length; |
4ee9c684 | 958 | match m; |
959 | ||
8db94b3b | 960 | *deferred = false; |
4ee9c684 | 961 | m = gfc_match_char ('*'); |
962 | if (m != MATCH_YES) | |
963 | return m; | |
964 | ||
3bd3b616 | 965 | m = gfc_match_small_literal_int (&length, NULL); |
4ee9c684 | 966 | if (m == MATCH_ERROR) |
967 | return m; | |
968 | ||
969 | if (m == MATCH_YES) | |
970 | { | |
ae0426ce | 971 | if (obsolescent_check |
60e19868 | 972 | && !gfc_notify_std (GFC_STD_F95_OBS, "Old-style character length at %C")) |
8e9b41f0 | 973 | return MATCH_ERROR; |
126387b5 | 974 | *expr = gfc_get_int_expr (gfc_default_integer_kind, NULL, length); |
4ee9c684 | 975 | return m; |
976 | } | |
977 | ||
978 | if (gfc_match_char ('(') == MATCH_NO) | |
979 | goto syntax; | |
980 | ||
3e715c81 | 981 | m = char_len_param_value (expr, deferred); |
077932f9 | 982 | if (m != MATCH_YES && gfc_matching_function) |
983 | { | |
984 | gfc_undo_symbols (); | |
985 | m = MATCH_YES; | |
986 | } | |
987 | ||
4ee9c684 | 988 | if (m == MATCH_ERROR) |
989 | return m; | |
990 | if (m == MATCH_NO) | |
991 | goto syntax; | |
992 | ||
993 | if (gfc_match_char (')') == MATCH_NO) | |
994 | { | |
995 | gfc_free_expr (*expr); | |
996 | *expr = NULL; | |
997 | goto syntax; | |
998 | } | |
999 | ||
1000 | return MATCH_YES; | |
1001 | ||
1002 | syntax: | |
1003 | gfc_error ("Syntax error in character length specification at %C"); | |
1004 | return MATCH_ERROR; | |
1005 | } | |
1006 | ||
1007 | ||
ee893be6 | 1008 | /* Special subroutine for finding a symbol. Check if the name is found |
1009 | in the current name space. If not, and we're compiling a function or | |
1010 | subroutine and the parent compilation unit is an interface, then check | |
1011 | to see if the name we've been given is the name of the interface | |
1012 | (located in another namespace). */ | |
4ee9c684 | 1013 | |
1014 | static int | |
36b0a1b0 | 1015 | find_special (const char *name, gfc_symbol **result, bool allow_subroutine) |
4ee9c684 | 1016 | { |
1017 | gfc_state_data *s; | |
36b0a1b0 | 1018 | gfc_symtree *st; |
ee893be6 | 1019 | int i; |
4ee9c684 | 1020 | |
36b0a1b0 | 1021 | i = gfc_get_sym_tree (name, NULL, &st, allow_subroutine); |
e14bee04 | 1022 | if (i == 0) |
36b0a1b0 | 1023 | { |
1024 | *result = st ? st->n.sym : NULL; | |
1025 | goto end; | |
1026 | } | |
e14bee04 | 1027 | |
4ee9c684 | 1028 | if (gfc_current_state () != COMP_SUBROUTINE |
1029 | && gfc_current_state () != COMP_FUNCTION) | |
ee893be6 | 1030 | goto end; |
4ee9c684 | 1031 | |
1032 | s = gfc_state_stack->previous; | |
1033 | if (s == NULL) | |
ee893be6 | 1034 | goto end; |
4ee9c684 | 1035 | |
1036 | if (s->state != COMP_INTERFACE) | |
ee893be6 | 1037 | goto end; |
4ee9c684 | 1038 | if (s->sym == NULL) |
f6d0e37a | 1039 | goto end; /* Nameless interface. */ |
4ee9c684 | 1040 | |
1041 | if (strcmp (name, s->sym->name) == 0) | |
1042 | { | |
1043 | *result = s->sym; | |
1044 | return 0; | |
1045 | } | |
1046 | ||
ee893be6 | 1047 | end: |
1048 | return i; | |
4ee9c684 | 1049 | } |
1050 | ||
1051 | ||
1052 | /* Special subroutine for getting a symbol node associated with a | |
1053 | procedure name, used in SUBROUTINE and FUNCTION statements. The | |
1054 | symbol is created in the parent using with symtree node in the | |
1055 | child unit pointing to the symbol. If the current namespace has no | |
1056 | parent, then the symbol is just created in the current unit. */ | |
1057 | ||
1058 | static int | |
1a9745d2 | 1059 | get_proc_name (const char *name, gfc_symbol **result, bool module_fcn_entry) |
4ee9c684 | 1060 | { |
1061 | gfc_symtree *st; | |
1062 | gfc_symbol *sym; | |
2ddb8ed9 | 1063 | int rc = 0; |
4ee9c684 | 1064 | |
d77f260f | 1065 | /* Module functions have to be left in their own namespace because |
1066 | they have potentially (almost certainly!) already been referenced. | |
1067 | In this sense, they are rather like external functions. This is | |
1068 | fixed up in resolve.c(resolve_entries), where the symbol name- | |
1069 | space is set to point to the master function, so that the fake | |
1070 | result mechanism can work. */ | |
1071 | if (module_fcn_entry) | |
861d824f | 1072 | { |
1073 | /* Present if entry is declared to be a module procedure. */ | |
1074 | rc = gfc_find_symbol (name, gfc_current_ns->parent, 0, result); | |
c6a05992 | 1075 | |
861d824f | 1076 | if (*result == NULL) |
1077 | rc = gfc_get_symbol (name, NULL, result); | |
a78f714d | 1078 | else if (!gfc_get_symbol (name, NULL, &sym) && sym |
c6a05992 | 1079 | && (*result)->ts.type == BT_UNKNOWN |
1080 | && sym->attr.flavor == FL_UNKNOWN) | |
1081 | /* Pick up the typespec for the entry, if declared in the function | |
1082 | body. Note that this symbol is FL_UNKNOWN because it will | |
1083 | only have appeared in a type declaration. The local symtree | |
1084 | is set to point to the module symbol and a unique symtree | |
1085 | to the local version. This latter ensures a correct clearing | |
1086 | of the symbols. */ | |
a78f714d | 1087 | { |
1088 | /* If the ENTRY proceeds its specification, we need to ensure | |
1089 | that this does not raise a "has no IMPLICIT type" error. */ | |
1090 | if (sym->ts.type == BT_UNKNOWN) | |
2168078b | 1091 | sym->attr.untyped = 1; |
a78f714d | 1092 | |
2168078b | 1093 | (*result)->ts = sym->ts; |
a78f714d | 1094 | |
1095 | /* Put the symbol in the procedure namespace so that, should | |
69b1505f | 1096 | the ENTRY precede its specification, the specification |
a78f714d | 1097 | can be applied. */ |
1098 | (*result)->ns = gfc_current_ns; | |
1099 | ||
1100 | gfc_find_sym_tree (name, gfc_current_ns, 0, &st); | |
1101 | st->n.sym = *result; | |
1102 | st = gfc_get_unique_symtree (gfc_current_ns); | |
c77c84dd | 1103 | sym->refs++; |
a78f714d | 1104 | st->n.sym = sym; |
1105 | } | |
861d824f | 1106 | } |
858f9894 | 1107 | else |
1108 | rc = gfc_get_symbol (name, gfc_current_ns->parent, result); | |
4ee9c684 | 1109 | |
2ddb8ed9 | 1110 | if (rc) |
1111 | return rc; | |
1112 | ||
858f9894 | 1113 | sym = *result; |
97323566 | 1114 | if (sym->attr.proc == PROC_ST_FUNCTION) |
1115 | return rc; | |
4ee9c684 | 1116 | |
4b8eb6ca | 1117 | if (sym->attr.module_procedure |
1118 | && sym->attr.if_source == IFSRC_IFBODY) | |
1119 | { | |
1120 | /* Create a partially populated interface symbol to carry the | |
1121 | characteristics of the procedure and the result. */ | |
1122 | sym->ts.interface = gfc_new_symbol (name, sym->ns); | |
1123 | gfc_add_type (sym->ts.interface, &(sym->ts), | |
1124 | &gfc_current_locus); | |
1125 | gfc_copy_attr (&sym->ts.interface->attr, &sym->attr, NULL); | |
1126 | if (sym->attr.dimension) | |
1127 | sym->ts.interface->as = gfc_copy_array_spec (sym->as); | |
1128 | ||
1129 | /* Ideally, at this point, a copy would be made of the formal | |
1130 | arguments and their namespace. However, this does not appear | |
1131 | to be necessary, albeit at the expense of not being able to | |
1132 | use gfc_compare_interfaces directly. */ | |
1133 | ||
1134 | if (sym->result && sym->result != sym) | |
1135 | { | |
1136 | sym->ts.interface->result = sym->result; | |
1137 | sym->result = NULL; | |
1138 | } | |
1139 | else if (sym->result) | |
1140 | { | |
1141 | sym->ts.interface->result = sym->ts.interface; | |
1142 | } | |
1143 | } | |
1144 | else if (sym && !sym->gfc_new | |
1145 | && gfc_current_state () != COMP_INTERFACE) | |
858f9894 | 1146 | { |
16f49153 | 1147 | /* Trap another encompassed procedure with the same name. All |
1148 | these conditions are necessary to avoid picking up an entry | |
1149 | whose name clashes with that of the encompassing procedure; | |
c77c84dd | 1150 | this is handled using gsymbols to register unique, globally |
16f49153 | 1151 | accessible names. */ |
858f9894 | 1152 | if (sym->attr.flavor != 0 |
1a9745d2 | 1153 | && sym->attr.proc != 0 |
1154 | && (sym->attr.subroutine || sym->attr.function) | |
1155 | && sym->attr.if_source != IFSRC_UNKNOWN) | |
e87256b0 | 1156 | gfc_error_now ("Procedure %qs at %C is already defined at %L", |
1157 | name, &sym->declared_at); | |
858f9894 | 1158 | |
5720fd2f | 1159 | /* Trap a procedure with a name the same as interface in the |
1160 | encompassing scope. */ | |
1161 | if (sym->attr.generic != 0 | |
db697236 | 1162 | && (sym->attr.subroutine || sym->attr.function) |
1163 | && !sym->attr.mod_proc) | |
e87256b0 | 1164 | gfc_error_now ("Name %qs at %C is already defined" |
1165 | " as a generic interface at %L", | |
1166 | name, &sym->declared_at); | |
5720fd2f | 1167 | |
858f9894 | 1168 | /* Trap declarations of attributes in encompassing scope. The |
1169 | signature for this is that ts.kind is set. Legitimate | |
1170 | references only set ts.type. */ | |
1171 | if (sym->ts.kind != 0 | |
1a9745d2 | 1172 | && !sym->attr.implicit_type |
1173 | && sym->attr.proc == 0 | |
1174 | && gfc_current_ns->parent != NULL | |
1175 | && sym->attr.access == 0 | |
1176 | && !module_fcn_entry) | |
e87256b0 | 1177 | gfc_error_now ("Procedure %qs at %C has an explicit interface " |
1178 | "and must not have attributes declared at %L", | |
1179 | name, &sym->declared_at); | |
858f9894 | 1180 | } |
1181 | ||
1182 | if (gfc_current_ns->parent == NULL || *result == NULL) | |
1183 | return rc; | |
4ee9c684 | 1184 | |
d77f260f | 1185 | /* Module function entries will already have a symtree in |
1186 | the current namespace but will need one at module level. */ | |
1187 | if (module_fcn_entry) | |
861d824f | 1188 | { |
1189 | /* Present if entry is declared to be a module procedure. */ | |
1190 | rc = gfc_find_sym_tree (name, gfc_current_ns->parent, 0, &st); | |
1191 | if (st == NULL) | |
1192 | st = gfc_new_symtree (&gfc_current_ns->parent->sym_root, name); | |
1193 | } | |
d77f260f | 1194 | else |
1195 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); | |
4ee9c684 | 1196 | |
4ee9c684 | 1197 | st->n.sym = sym; |
1198 | sym->refs++; | |
1199 | ||
f6d0e37a | 1200 | /* See if the procedure should be a module procedure. */ |
4ee9c684 | 1201 | |
d77f260f | 1202 | if (((sym->ns->proc_name != NULL |
861d824f | 1203 | && sym->ns->proc_name->attr.flavor == FL_MODULE |
1204 | && sym->attr.proc != PROC_MODULE) | |
1205 | || (module_fcn_entry && sym->attr.proc != PROC_MODULE)) | |
60e19868 | 1206 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
4ee9c684 | 1207 | rc = 2; |
1208 | ||
1209 | return rc; | |
1210 | } | |
1211 | ||
1212 | ||
c5d33754 | 1213 | /* Verify that the given symbol representing a parameter is C |
1214 | interoperable, by checking to see if it was marked as such after | |
1215 | its declaration. If the given symbol is not interoperable, a | |
1216 | warning is reported, thus removing the need to return the status to | |
1217 | the calling function. The standard does not require the user use | |
1218 | one of the iso_c_binding named constants to declare an | |
1219 | interoperable parameter, but we can't be sure if the param is C | |
1220 | interop or not if the user doesn't. For example, integer(4) may be | |
1221 | legal Fortran, but doesn't have meaning in C. It may interop with | |
1222 | a number of the C types, which causes a problem because the | |
1223 | compiler can't know which one. This code is almost certainly not | |
1224 | portable, and the user will get what they deserve if the C type | |
1225 | across platforms isn't always interoperable with integer(4). If | |
1226 | the user had used something like integer(c_int) or integer(c_long), | |
1227 | the compiler could have automatically handled the varying sizes | |
1228 | across platforms. */ | |
1229 | ||
60e19868 | 1230 | bool |
2564c57a | 1231 | gfc_verify_c_interop_param (gfc_symbol *sym) |
c5d33754 | 1232 | { |
1233 | int is_c_interop = 0; | |
60e19868 | 1234 | bool retval = true; |
c5d33754 | 1235 | |
1236 | /* We check implicitly typed variables in symbol.c:gfc_set_default_type(). | |
1237 | Don't repeat the checks here. */ | |
1238 | if (sym->attr.implicit_type) | |
60e19868 | 1239 | return true; |
8db94b3b | 1240 | |
c5d33754 | 1241 | /* For subroutines or functions that are passed to a BIND(C) procedure, |
1242 | they're interoperable if they're BIND(C) and their params are all | |
1243 | interoperable. */ | |
1244 | if (sym->attr.flavor == FL_PROCEDURE) | |
1245 | { | |
1246 | if (sym->attr.is_bind_c == 0) | |
1247 | { | |
bf79c656 | 1248 | gfc_error_now ("Procedure %qs at %L must have the BIND(C) " |
1249 | "attribute to be C interoperable", sym->name, | |
1250 | &(sym->declared_at)); | |
60e19868 | 1251 | return false; |
c5d33754 | 1252 | } |
1253 | else | |
1254 | { | |
1255 | if (sym->attr.is_c_interop == 1) | |
1256 | /* We've already checked this procedure; don't check it again. */ | |
60e19868 | 1257 | return true; |
c5d33754 | 1258 | else |
1259 | return verify_bind_c_sym (sym, &(sym->ts), sym->attr.in_common, | |
1260 | sym->common_block); | |
1261 | } | |
1262 | } | |
8db94b3b | 1263 | |
c5d33754 | 1264 | /* See if we've stored a reference to a procedure that owns sym. */ |
1265 | if (sym->ns != NULL && sym->ns->proc_name != NULL) | |
1266 | { | |
1267 | if (sym->ns->proc_name->attr.is_bind_c == 1) | |
1268 | { | |
60e19868 | 1269 | is_c_interop = (gfc_verify_c_interop(&(sym->ts)) ? 1 : 0); |
c5d33754 | 1270 | |
1271 | if (is_c_interop != 1) | |
1272 | { | |
1273 | /* Make personalized messages to give better feedback. */ | |
1274 | if (sym->ts.type == BT_DERIVED) | |
716da296 | 1275 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1276 | "BIND(C) procedure %qs but is not C interoperable " | |
1277 | "because derived type %qs is not C interoperable", | |
c5d33754 | 1278 | sym->name, &(sym->declared_at), |
8db94b3b | 1279 | sym->ns->proc_name->name, |
eeebe20b | 1280 | sym->ts.u.derived->name); |
2564c57a | 1281 | else if (sym->ts.type == BT_CLASS) |
716da296 | 1282 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1283 | "BIND(C) procedure %qs but is not C interoperable " | |
2564c57a | 1284 | "because it is polymorphic", |
1285 | sym->name, &(sym->declared_at), | |
1286 | sym->ns->proc_name->name); | |
bf79c656 | 1287 | else if (warn_c_binding_type) |
4166acc7 | 1288 | gfc_warning (OPT_Wc_binding_type, |
1289 | "Variable %qs at %L is a dummy argument of the " | |
1290 | "BIND(C) procedure %qs but may not be C " | |
c5d33754 | 1291 | "interoperable", |
1292 | sym->name, &(sym->declared_at), | |
1293 | sym->ns->proc_name->name); | |
1294 | } | |
e4eda3ec | 1295 | |
1296 | /* Character strings are only C interoperable if they have a | |
1297 | length of 1. */ | |
1298 | if (sym->ts.type == BT_CHARACTER) | |
1299 | { | |
eeebe20b | 1300 | gfc_charlen *cl = sym->ts.u.cl; |
e4eda3ec | 1301 | if (!cl || !cl->length || cl->length->expr_type != EXPR_CONSTANT |
1302 | || mpz_cmp_si (cl->length->value.integer, 1) != 0) | |
1303 | { | |
716da296 | 1304 | gfc_error ("Character argument %qs at %L " |
e4eda3ec | 1305 | "must be length 1 because " |
716da296 | 1306 | "procedure %qs is BIND(C)", |
e4eda3ec | 1307 | sym->name, &sym->declared_at, |
1308 | sym->ns->proc_name->name); | |
60e19868 | 1309 | retval = false; |
e4eda3ec | 1310 | } |
1311 | } | |
1312 | ||
c5d33754 | 1313 | /* We have to make sure that any param to a bind(c) routine does |
1314 | not have the allocatable, pointer, or optional attributes, | |
1315 | according to J3/04-007, section 5.1. */ | |
a435dc3a | 1316 | if (sym->attr.allocatable == 1 |
0d2b3c9c | 1317 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable %qs at %L with " |
1318 | "ALLOCATABLE attribute in procedure %qs " | |
a435dc3a | 1319 | "with BIND(C)", sym->name, |
1320 | &(sym->declared_at), | |
1321 | sym->ns->proc_name->name)) | |
1322 | retval = false; | |
1323 | ||
1324 | if (sym->attr.pointer == 1 | |
0d2b3c9c | 1325 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable %qs at %L with " |
1326 | "POINTER attribute in procedure %qs " | |
a435dc3a | 1327 | "with BIND(C)", sym->name, |
1328 | &(sym->declared_at), | |
1329 | sym->ns->proc_name->name)) | |
1330 | retval = false; | |
1331 | ||
1332 | if ((sym->attr.allocatable || sym->attr.pointer) && !sym->as) | |
c5d33754 | 1333 | { |
716da296 | 1334 | gfc_error ("Scalar variable %qs at %L with POINTER or " |
1335 | "ALLOCATABLE in procedure %qs with BIND(C) is not yet" | |
a435dc3a | 1336 | " supported", sym->name, &(sym->declared_at), |
c5d33754 | 1337 | sym->ns->proc_name->name); |
60e19868 | 1338 | retval = false; |
c5d33754 | 1339 | } |
1340 | ||
495e197c | 1341 | if (sym->attr.optional == 1 && sym->attr.value) |
c5d33754 | 1342 | { |
716da296 | 1343 | gfc_error ("Variable %qs at %L cannot have both the OPTIONAL " |
1344 | "and the VALUE attribute because procedure %qs " | |
495e197c | 1345 | "is BIND(C)", sym->name, &(sym->declared_at), |
c5d33754 | 1346 | sym->ns->proc_name->name); |
60e19868 | 1347 | retval = false; |
c5d33754 | 1348 | } |
495e197c | 1349 | else if (sym->attr.optional == 1 |
0d2b3c9c | 1350 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable %qs " |
60e19868 | 1351 | "at %L with OPTIONAL attribute in " |
76e207a9 | 1352 | "procedure %qs which is BIND(C)", |
1353 | sym->name, &(sym->declared_at), | |
60e19868 | 1354 | sym->ns->proc_name->name)) |
1355 | retval = false; | |
c5d33754 | 1356 | |
1357 | /* Make sure that if it has the dimension attribute, that it is | |
9350ae4e | 1358 | either assumed size or explicit shape. Deferred shape is already |
1359 | covered by the pointer/allocatable attribute. */ | |
1360 | if (sym->as != NULL && sym->as->type == AS_ASSUMED_SHAPE | |
389a9009 | 1361 | && !gfc_notify_std (GFC_STD_F2008_TS, "Assumed-shape array %qs " |
60e19868 | 1362 | "at %L as dummy argument to the BIND(C) " |
2f7de6c1 | 1363 | "procedure %qs at %L", sym->name, |
76e207a9 | 1364 | &(sym->declared_at), |
1365 | sym->ns->proc_name->name, | |
60e19868 | 1366 | &(sym->ns->proc_name->declared_at))) |
1367 | retval = false; | |
c5d33754 | 1368 | } |
1369 | } | |
1370 | ||
1371 | return retval; | |
1372 | } | |
1373 | ||
1374 | ||
1de1b1a9 | 1375 | |
c5d33754 | 1376 | /* Function called by variable_decl() that adds a name to the symbol table. */ |
4ee9c684 | 1377 | |
60e19868 | 1378 | static bool |
3e715c81 | 1379 | build_sym (const char *name, gfc_charlen *cl, bool cl_deferred, |
1a9745d2 | 1380 | gfc_array_spec **as, locus *var_locus) |
4ee9c684 | 1381 | { |
1382 | symbol_attribute attr; | |
1383 | gfc_symbol *sym; | |
9b49c3cb | 1384 | int upper; |
4ee9c684 | 1385 | |
ee893be6 | 1386 | if (gfc_get_symbol (name, NULL, &sym)) |
60e19868 | 1387 | return false; |
4ee9c684 | 1388 | |
9b49c3cb | 1389 | /* Check if the name has already been defined as a type. The |
1390 | first letter of the symtree will be in upper case then. Of | |
1391 | course, this is only necessary if the upper case letter is | |
1392 | actually different. */ | |
1393 | ||
1394 | upper = TOUPPER(name[0]); | |
1395 | if (upper != name[0]) | |
1396 | { | |
1397 | char u_name[GFC_MAX_SYMBOL_LEN + 1]; | |
1398 | gfc_symtree *st; | |
1399 | int nlen; | |
1400 | ||
1401 | nlen = strlen(name); | |
1402 | gcc_assert (nlen <= GFC_MAX_SYMBOL_LEN); | |
1403 | strncpy (u_name, name, nlen + 1); | |
1404 | u_name[0] = upper; | |
1405 | ||
1406 | st = gfc_find_symtree (gfc_current_ns->sym_root, u_name); | |
1407 | ||
d7cd448a | 1408 | /* STRUCTURE types can alias symbol names */ |
1409 | if (st != 0 && st->n.sym->attr.flavor != FL_STRUCT) | |
9b49c3cb | 1410 | { |
1411 | gfc_error ("Symbol %qs at %C also declared as a type at %L", name, | |
1412 | &st->n.sym->declared_at); | |
1413 | return false; | |
1414 | } | |
1415 | } | |
1416 | ||
f6d0e37a | 1417 | /* Start updating the symbol table. Add basic type attribute if present. */ |
4ee9c684 | 1418 | if (current_ts.type != BT_UNKNOWN |
1a9745d2 | 1419 | && (sym->attr.implicit_type == 0 |
1420 | || !gfc_compare_types (&sym->ts, ¤t_ts)) | |
60e19868 | 1421 | && !gfc_add_type (sym, ¤t_ts, var_locus)) |
1422 | return false; | |
4ee9c684 | 1423 | |
1424 | if (sym->ts.type == BT_CHARACTER) | |
3e715c81 | 1425 | { |
1426 | sym->ts.u.cl = cl; | |
1427 | sym->ts.deferred = cl_deferred; | |
1428 | } | |
4ee9c684 | 1429 | |
1430 | /* Add dimension attribute if present. */ | |
60e19868 | 1431 | if (!gfc_set_array_spec (sym, *as, var_locus)) |
1432 | return false; | |
4ee9c684 | 1433 | *as = NULL; |
1434 | ||
1435 | /* Add attribute to symbol. The copy is so that we can reset the | |
1436 | dimension attribute. */ | |
1437 | attr = current_attr; | |
1438 | attr.dimension = 0; | |
aff518b0 | 1439 | attr.codimension = 0; |
4ee9c684 | 1440 | |
60e19868 | 1441 | if (!gfc_copy_attr (&sym->attr, &attr, var_locus)) |
1442 | return false; | |
4ee9c684 | 1443 | |
c5d33754 | 1444 | /* Finish any work that may need to be done for the binding label, |
1445 | if it's a bind(c). The bind(c) attr is found before the symbol | |
1446 | is made, and before the symbol name (for data decls), so the | |
1447 | current_ts is holding the binding label, or nothing if the | |
1448 | name= attr wasn't given. Therefore, test here if we're dealing | |
1449 | with a bind(c) and make sure the binding label is set correctly. */ | |
1450 | if (sym->attr.is_bind_c == 1) | |
1451 | { | |
7b2060ba | 1452 | if (!sym->binding_label) |
c5d33754 | 1453 | { |
825718f9 | 1454 | /* Set the binding label and verify that if a NAME= was specified |
1455 | then only one identifier was in the entity-decl-list. */ | |
76e207a9 | 1456 | if (!set_binding_label (&sym->binding_label, sym->name, |
60e19868 | 1457 | num_idents_on_line)) |
1458 | return false; | |
c5d33754 | 1459 | } |
1460 | } | |
1461 | ||
1462 | /* See if we know we're in a common block, and if it's a bind(c) | |
1463 | common then we need to make sure we're an interoperable type. */ | |
1464 | if (sym->attr.in_common == 1) | |
1465 | { | |
1466 | /* Test the common block object. */ | |
1467 | if (sym->common_block != NULL && sym->common_block->is_bind_c == 1 | |
1468 | && sym->ts.is_c_interop != 1) | |
1469 | { | |
bf79c656 | 1470 | gfc_error_now ("Variable %qs in common block %qs at %C " |
c5d33754 | 1471 | "must be declared with a C interoperable " |
bf79c656 | 1472 | "kind since common block %qs is BIND(C)", |
c5d33754 | 1473 | sym->name, sym->common_block->name, |
1474 | sym->common_block->name); | |
1475 | gfc_clear_error (); | |
1476 | } | |
1477 | } | |
1478 | ||
2457a77e | 1479 | sym->attr.implied_index = 0; |
1480 | ||
fa102e56 | 1481 | if (sym->ts.type == BT_CLASS) |
e8393d49 | 1482 | return gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as); |
1de1b1a9 | 1483 | |
60e19868 | 1484 | return true; |
4ee9c684 | 1485 | } |
1486 | ||
1a9745d2 | 1487 | |
a270dc8e | 1488 | /* Set character constant to the given length. The constant will be padded or |
d1a39099 | 1489 | truncated. If we're inside an array constructor without a typespec, we |
1490 | additionally check that all elements have the same length; check_len -1 | |
1491 | means no checking. */ | |
a270dc8e | 1492 | |
1493 | void | |
d1a39099 | 1494 | gfc_set_constant_character_len (int len, gfc_expr *expr, int check_len) |
a270dc8e | 1495 | { |
c32f863c | 1496 | gfc_char_t *s; |
a270dc8e | 1497 | int slen; |
1498 | ||
00fff882 | 1499 | if (expr->ts.type != BT_CHARACTER) |
1500 | return; | |
3badc59b | 1501 | |
1502 | if (expr->expr_type != EXPR_CONSTANT) | |
1503 | { | |
1504 | gfc_error_now ("CHARACTER length must be a constant at %L", &expr->where); | |
1505 | return; | |
1506 | } | |
a270dc8e | 1507 | |
1508 | slen = expr->value.character.length; | |
1509 | if (len != slen) | |
1510 | { | |
c32f863c | 1511 | s = gfc_get_wide_string (len + 1); |
1512 | memcpy (s, expr->value.character.string, | |
1513 | MIN (len, slen) * sizeof (gfc_char_t)); | |
a270dc8e | 1514 | if (len > slen) |
c32f863c | 1515 | gfc_wide_memset (&s[slen], ' ', len - slen); |
1bfea7e8 | 1516 | |
fed21cc2 | 1517 | if (warn_character_truncation && slen > len) |
bf79c656 | 1518 | gfc_warning_now (OPT_Wcharacter_truncation, |
1519 | "CHARACTER expression at %L is being truncated " | |
1520 | "(%d/%d)", &expr->where, slen, len); | |
1bfea7e8 | 1521 | |
1522 | /* Apply the standard by 'hand' otherwise it gets cleared for | |
1523 | initializers. */ | |
d1a39099 | 1524 | if (check_len != -1 && slen != check_len |
1525 | && !(gfc_option.allow_std & GFC_STD_GNU)) | |
1bfea7e8 | 1526 | gfc_error_now ("The CHARACTER elements of the array constructor " |
1527 | "at %L must have the same length (%d/%d)", | |
d1a39099 | 1528 | &expr->where, slen, check_len); |
1bfea7e8 | 1529 | |
89f528df | 1530 | s[len] = '\0'; |
434f0922 | 1531 | free (expr->value.character.string); |
a270dc8e | 1532 | expr->value.character.string = s; |
1533 | expr->value.character.length = len; | |
1534 | } | |
1535 | } | |
4ee9c684 | 1536 | |
3b6a4b41 | 1537 | |
e14bee04 | 1538 | /* Function to create and update the enumerator history |
3b6a4b41 | 1539 | using the information passed as arguments. |
e14bee04 | 1540 | Pointer "max_enum" is also updated, to point to |
1541 | enum history node containing largest initializer. | |
3b6a4b41 | 1542 | |
1543 | SYM points to the symbol node of enumerator. | |
f6d0e37a | 1544 | INIT points to its enumerator value. */ |
3b6a4b41 | 1545 | |
e14bee04 | 1546 | static void |
1a9745d2 | 1547 | create_enum_history (gfc_symbol *sym, gfc_expr *init) |
3b6a4b41 | 1548 | { |
1549 | enumerator_history *new_enum_history; | |
1550 | gcc_assert (sym != NULL && init != NULL); | |
1551 | ||
48d8ad5a | 1552 | new_enum_history = XCNEW (enumerator_history); |
3b6a4b41 | 1553 | |
1554 | new_enum_history->sym = sym; | |
1555 | new_enum_history->initializer = init; | |
1556 | new_enum_history->next = NULL; | |
1557 | ||
1558 | if (enum_history == NULL) | |
1559 | { | |
1560 | enum_history = new_enum_history; | |
1561 | max_enum = enum_history; | |
1562 | } | |
1563 | else | |
1564 | { | |
1565 | new_enum_history->next = enum_history; | |
1566 | enum_history = new_enum_history; | |
1567 | ||
e14bee04 | 1568 | if (mpz_cmp (max_enum->initializer->value.integer, |
3b6a4b41 | 1569 | new_enum_history->initializer->value.integer) < 0) |
1a9745d2 | 1570 | max_enum = new_enum_history; |
3b6a4b41 | 1571 | } |
1572 | } | |
1573 | ||
1574 | ||
e14bee04 | 1575 | /* Function to free enum kind history. */ |
3b6a4b41 | 1576 | |
e14bee04 | 1577 | void |
1a9745d2 | 1578 | gfc_free_enum_history (void) |
3b6a4b41 | 1579 | { |
e14bee04 | 1580 | enumerator_history *current = enum_history; |
1581 | enumerator_history *next; | |
3b6a4b41 | 1582 | |
1583 | while (current != NULL) | |
1584 | { | |
1585 | next = current->next; | |
434f0922 | 1586 | free (current); |
3b6a4b41 | 1587 | current = next; |
1588 | } | |
1589 | max_enum = NULL; | |
1590 | enum_history = NULL; | |
1591 | } | |
1592 | ||
1593 | ||
4ee9c684 | 1594 | /* Function called by variable_decl() that adds an initialization |
1595 | expression to a symbol. */ | |
1596 | ||
60e19868 | 1597 | static bool |
f6d0e37a | 1598 | add_init_expr_to_sym (const char *name, gfc_expr **initp, locus *var_locus) |
4ee9c684 | 1599 | { |
1600 | symbol_attribute attr; | |
1601 | gfc_symbol *sym; | |
1602 | gfc_expr *init; | |
1603 | ||
1604 | init = *initp; | |
36b0a1b0 | 1605 | if (find_special (name, &sym, false)) |
60e19868 | 1606 | return false; |
4ee9c684 | 1607 | |
1608 | attr = sym->attr; | |
1609 | ||
1610 | /* If this symbol is confirming an implicit parameter type, | |
1611 | then an initialization expression is not allowed. */ | |
1612 | if (attr.flavor == FL_PARAMETER | |
1613 | && sym->value != NULL | |
1614 | && *initp != NULL) | |
1615 | { | |
716da296 | 1616 | gfc_error ("Initializer not allowed for PARAMETER %qs at %C", |
4ee9c684 | 1617 | sym->name); |
60e19868 | 1618 | return false; |
4ee9c684 | 1619 | } |
1620 | ||
1621 | if (init == NULL) | |
1622 | { | |
1623 | /* An initializer is required for PARAMETER declarations. */ | |
1624 | if (attr.flavor == FL_PARAMETER) | |
1625 | { | |
1626 | gfc_error ("PARAMETER at %L is missing an initializer", var_locus); | |
60e19868 | 1627 | return false; |
4ee9c684 | 1628 | } |
1629 | } | |
1630 | else | |
1631 | { | |
1632 | /* If a variable appears in a DATA block, it cannot have an | |
b97f1a18 | 1633 | initializer. */ |
4ee9c684 | 1634 | if (sym->attr.data) |
1635 | { | |
716da296 | 1636 | gfc_error ("Variable %qs at %C with an initializer already " |
1a9745d2 | 1637 | "appears in a DATA statement", sym->name); |
60e19868 | 1638 | return false; |
4ee9c684 | 1639 | } |
1640 | ||
cca3db55 | 1641 | /* Check if the assignment can happen. This has to be put off |
23d075f4 | 1642 | until later for derived type variables and procedure pointers. */ |
d7cd448a | 1643 | if (!gfc_bt_struct (sym->ts.type) && !gfc_bt_struct (init->ts.type) |
1de1b1a9 | 1644 | && sym->ts.type != BT_CLASS && init->ts.type != BT_CLASS |
8db94b3b | 1645 | && !sym->attr.proc_pointer |
60e19868 | 1646 | && !gfc_check_assign_symbol (sym, NULL, init)) |
1647 | return false; | |
4ee9c684 | 1648 | |
eeebe20b | 1649 | if (sym->ts.type == BT_CHARACTER && sym->ts.u.cl |
da540712 | 1650 | && init->ts.type == BT_CHARACTER) |
a270dc8e | 1651 | { |
1652 | /* Update symbol character length according initializer. */ | |
60e19868 | 1653 | if (!gfc_check_assign_symbol (sym, NULL, init)) |
1654 | return false; | |
da540712 | 1655 | |
eeebe20b | 1656 | if (sym->ts.u.cl->length == NULL) |
a270dc8e | 1657 | { |
03c2a028 | 1658 | int clen; |
f6d0e37a | 1659 | /* If there are multiple CHARACTER variables declared on the |
1660 | same line, we don't want them to share the same length. */ | |
d270ce52 | 1661 | sym->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
e9c873a4 | 1662 | |
03c2a028 | 1663 | if (sym->attr.flavor == FL_PARAMETER) |
1664 | { | |
1665 | if (init->expr_type == EXPR_CONSTANT) | |
1666 | { | |
1667 | clen = init->value.character.length; | |
126387b5 | 1668 | sym->ts.u.cl->length |
1669 | = gfc_get_int_expr (gfc_default_integer_kind, | |
1670 | NULL, clen); | |
03c2a028 | 1671 | } |
1672 | else if (init->expr_type == EXPR_ARRAY) | |
1673 | { | |
9123b22a | 1674 | if (init->ts.u.cl) |
cde225a2 | 1675 | { |
1676 | const gfc_expr *length = init->ts.u.cl->length; | |
1677 | if (length->expr_type != EXPR_CONSTANT) | |
1678 | { | |
1679 | gfc_error ("Cannot initialize parameter array " | |
1680 | "at %L " | |
1681 | "with variable length elements", | |
1682 | &sym->declared_at); | |
1683 | return false; | |
1684 | } | |
1685 | clen = mpz_get_si (length->value.integer); | |
1686 | } | |
9123b22a | 1687 | else if (init->value.constructor) |
1688 | { | |
1689 | gfc_constructor *c; | |
76e207a9 | 1690 | c = gfc_constructor_first (init->value.constructor); |
9123b22a | 1691 | clen = c->expr->value.character.length; |
1692 | } | |
1693 | else | |
1694 | gcc_unreachable (); | |
126387b5 | 1695 | sym->ts.u.cl->length |
1696 | = gfc_get_int_expr (gfc_default_integer_kind, | |
1697 | NULL, clen); | |
03c2a028 | 1698 | } |
eeebe20b | 1699 | else if (init->ts.u.cl && init->ts.u.cl->length) |
1700 | sym->ts.u.cl->length = | |
1701 | gfc_copy_expr (sym->value->ts.u.cl->length); | |
03c2a028 | 1702 | } |
a270dc8e | 1703 | } |
1704 | /* Update initializer character length according symbol. */ | |
eeebe20b | 1705 | else if (sym->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
a270dc8e | 1706 | { |
f8e2139b | 1707 | int len; |
1708 | ||
1709 | if (!gfc_specification_expr (sym->ts.u.cl->length)) | |
1710 | return false; | |
1711 | ||
1712 | len = mpz_get_si (sym->ts.u.cl->length->value.integer); | |
a270dc8e | 1713 | |
1714 | if (init->expr_type == EXPR_CONSTANT) | |
d1a39099 | 1715 | gfc_set_constant_character_len (len, init, -1); |
a270dc8e | 1716 | else if (init->expr_type == EXPR_ARRAY) |
1717 | { | |
126387b5 | 1718 | gfc_constructor *c; |
1719 | ||
39908fd9 | 1720 | /* Build a new charlen to prevent simplification from |
1721 | deleting the length before it is resolved. */ | |
d270ce52 | 1722 | init->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
eeebe20b | 1723 | init->ts.u.cl->length = gfc_copy_expr (sym->ts.u.cl->length); |
39908fd9 | 1724 | |
126387b5 | 1725 | for (c = gfc_constructor_first (init->value.constructor); |
1726 | c; c = gfc_constructor_next (c)) | |
1727 | gfc_set_constant_character_len (len, c->expr, -1); | |
a270dc8e | 1728 | } |
1729 | } | |
1730 | } | |
1731 | ||
ae2864a8 | 1732 | /* If sym is implied-shape, set its upper bounds from init. */ |
1733 | if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension | |
1734 | && sym->as->type == AS_IMPLIED_SHAPE) | |
1735 | { | |
1736 | int dim; | |
1737 | ||
1738 | if (init->rank == 0) | |
1739 | { | |
1740 | gfc_error ("Can't initialize implied-shape array at %L" | |
1741 | " with scalar", &sym->declared_at); | |
60e19868 | 1742 | return false; |
ae2864a8 | 1743 | } |
ae2864a8 | 1744 | |
1745 | /* Shape should be present, we get an initialization expression. */ | |
1746 | gcc_assert (init->shape); | |
1747 | ||
1748 | for (dim = 0; dim < sym->as->rank; ++dim) | |
1749 | { | |
1750 | int k; | |
0c0c5469 | 1751 | gfc_expr *e, *lower; |
8db94b3b | 1752 | |
ae2864a8 | 1753 | lower = sym->as->lower[dim]; |
0c0c5469 | 1754 | |
76e207a9 | 1755 | /* If the lower bound is an array element from another |
0c0c5469 | 1756 | parameterized array, then it is marked with EXPR_VARIABLE and |
1757 | is an initialization expression. Try to reduce it. */ | |
1758 | if (lower->expr_type == EXPR_VARIABLE) | |
1759 | gfc_reduce_init_expr (lower); | |
1760 | ||
1761 | if (lower->expr_type == EXPR_CONSTANT) | |
1762 | { | |
1763 | /* All dimensions must be without upper bound. */ | |
1764 | gcc_assert (!sym->as->upper[dim]); | |
1765 | ||
1766 | k = lower->ts.kind; | |
1767 | e = gfc_get_constant_expr (BT_INTEGER, k, &sym->declared_at); | |
1768 | mpz_add (e->value.integer, lower->value.integer, | |
1769 | init->shape[dim]); | |
1770 | mpz_sub_ui (e->value.integer, e->value.integer, 1); | |
1771 | sym->as->upper[dim] = e; | |
1772 | } | |
1773 | else | |
ae2864a8 | 1774 | { |
1775 | gfc_error ("Non-constant lower bound in implied-shape" | |
1776 | " declaration at %L", &lower->where); | |
60e19868 | 1777 | return false; |
ae2864a8 | 1778 | } |
ae2864a8 | 1779 | } |
1780 | ||
1781 | sym->as->type = AS_EXPLICIT; | |
1782 | } | |
1783 | ||
c5d33754 | 1784 | /* Need to check if the expression we initialized this |
1785 | to was one of the iso_c_binding named constants. If so, | |
1786 | and we're a parameter (constant), let it be iso_c. | |
1787 | For example: | |
1788 | integer(c_int), parameter :: my_int = c_int | |
1789 | integer(my_int) :: my_int_2 | |
1790 | If we mark my_int as iso_c (since we can see it's value | |
1791 | is equal to one of the named constants), then my_int_2 | |
1792 | will be considered C interoperable. */ | |
d7cd448a | 1793 | if (sym->ts.type != BT_CHARACTER && !gfc_bt_struct (sym->ts.type)) |
c5d33754 | 1794 | { |
1795 | sym->ts.is_iso_c |= init->ts.is_iso_c; | |
1796 | sym->ts.is_c_interop |= init->ts.is_c_interop; | |
1797 | /* attr bits needed for module files. */ | |
1798 | sym->attr.is_iso_c |= init->ts.is_iso_c; | |
1799 | sym->attr.is_c_interop |= init->ts.is_c_interop; | |
1800 | if (init->ts.is_iso_c) | |
1801 | sym->ts.f90_type = init->ts.f90_type; | |
1802 | } | |
126387b5 | 1803 | |
4ee9c684 | 1804 | /* Add initializer. Make sure we keep the ranks sane. */ |
1805 | if (sym->attr.dimension && init->rank == 0) | |
7baa3fb4 | 1806 | { |
1807 | mpz_t size; | |
1808 | gfc_expr *array; | |
7baa3fb4 | 1809 | int n; |
1810 | if (sym->attr.flavor == FL_PARAMETER | |
1811 | && init->expr_type == EXPR_CONSTANT | |
60e19868 | 1812 | && spec_size (sym->as, &size) |
7baa3fb4 | 1813 | && mpz_cmp_si (size, 0) > 0) |
1814 | { | |
126387b5 | 1815 | array = gfc_get_array_expr (init->ts.type, init->ts.kind, |
1816 | &init->where); | |
7baa3fb4 | 1817 | for (n = 0; n < (int)mpz_get_si (size); n++) |
126387b5 | 1818 | gfc_constructor_append_expr (&array->value.constructor, |
1819 | n == 0 | |
1820 | ? init | |
1821 | : gfc_copy_expr (init), | |
1822 | &init->where); | |
8db94b3b | 1823 | |
7baa3fb4 | 1824 | array->shape = gfc_get_shape (sym->as->rank); |
1825 | for (n = 0; n < sym->as->rank; n++) | |
1826 | spec_dimen_size (sym->as, n, &array->shape[n]); | |
1827 | ||
1828 | init = array; | |
1829 | mpz_clear (size); | |
1830 | } | |
1831 | init->rank = sym->as->rank; | |
1832 | } | |
4ee9c684 | 1833 | |
1834 | sym->value = init; | |
3cd3c667 | 1835 | if (sym->attr.save == SAVE_NONE) |
1836 | sym->attr.save = SAVE_IMPLICIT; | |
4ee9c684 | 1837 | *initp = NULL; |
1838 | } | |
1839 | ||
60e19868 | 1840 | return true; |
4ee9c684 | 1841 | } |
1842 | ||
1843 | ||
1844 | /* Function called by variable_decl() that adds a name to a structure | |
1845 | being built. */ | |
1846 | ||
60e19868 | 1847 | static bool |
1a9745d2 | 1848 | build_struct (const char *name, gfc_charlen *cl, gfc_expr **init, |
1849 | gfc_array_spec **as) | |
4ee9c684 | 1850 | { |
d7cd448a | 1851 | gfc_state_data *s; |
4ee9c684 | 1852 | gfc_component *c; |
60e19868 | 1853 | bool t = true; |
4ee9c684 | 1854 | |
53d2e124 | 1855 | /* F03:C438/C439. If the current symbol is of the same derived type that we're |
4ee9c684 | 1856 | constructing, it must have the pointer attribute. */ |
53d2e124 | 1857 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
eeebe20b | 1858 | && current_ts.u.derived == gfc_current_block () |
4ee9c684 | 1859 | && current_attr.pointer == 0) |
1860 | { | |
dd7553fe | 1861 | if (current_attr.allocatable |
1862 | && !gfc_notify_std(GFC_STD_F2008, "Component at %C " | |
1863 | "must have the POINTER attribute")) | |
1864 | { | |
1865 | return false; | |
1866 | } | |
1867 | else if (current_attr.allocatable == 0) | |
1868 | { | |
4ee9c684 | 1869 | gfc_error ("Component at %C must have the POINTER attribute"); |
60e19868 | 1870 | return false; |
4ee9c684 | 1871 | } |
dd7553fe | 1872 | } |
4ee9c684 | 1873 | |
1a9745d2 | 1874 | if (gfc_current_block ()->attr.pointer && (*as)->rank != 0) |
4ee9c684 | 1875 | { |
1876 | if ((*as)->type != AS_DEFERRED && (*as)->type != AS_EXPLICIT) | |
1877 | { | |
1878 | gfc_error ("Array component of structure at %C must have explicit " | |
1879 | "or deferred shape"); | |
60e19868 | 1880 | return false; |
4ee9c684 | 1881 | } |
1882 | } | |
1883 | ||
d7cd448a | 1884 | /* If we are in a nested union/map definition, gfc_add_component will not |
1885 | properly find repeated components because: | |
7d7125df | 1886 | (i) gfc_add_component does a flat search, where components of unions |
d7cd448a | 1887 | and maps are implicity chained so nested components may conflict. |
1888 | (ii) Unions and maps are not linked as components of their parent | |
1889 | structures until after they are parsed. | |
1890 | For (i) we use gfc_find_component which searches recursively, and for (ii) | |
1891 | we search each block directly from the parse stack until we find the top | |
1892 | level structure. */ | |
1893 | ||
1894 | s = gfc_state_stack; | |
1895 | if (s->state == COMP_UNION || s->state == COMP_MAP) | |
1896 | { | |
1897 | while (s->state == COMP_UNION || gfc_comp_struct (s->state)) | |
1898 | { | |
1899 | c = gfc_find_component (s->sym, name, true, true, NULL); | |
1900 | if (c != NULL) | |
1901 | { | |
1902 | gfc_error_now ("Component '%s' at %C already declared at %L", | |
1903 | name, &c->loc); | |
1904 | return false; | |
1905 | } | |
1906 | /* Break after we've searched the entire chain. */ | |
1907 | if (s->state == COMP_DERIVED || s->state == COMP_STRUCTURE) | |
1908 | break; | |
1909 | s = s->previous; | |
1910 | } | |
1911 | } | |
1912 | ||
60e19868 | 1913 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
1914 | return false; | |
4ee9c684 | 1915 | |
1916 | c->ts = current_ts; | |
eeebe20b | 1917 | if (c->ts.type == BT_CHARACTER) |
1918 | c->ts.u.cl = cl; | |
3be2b8d5 | 1919 | c->attr = current_attr; |
4ee9c684 | 1920 | |
1921 | c->initializer = *init; | |
1922 | *init = NULL; | |
1923 | ||
1924 | c->as = *as; | |
1925 | if (c->as != NULL) | |
aff518b0 | 1926 | { |
1927 | if (c->as->corank) | |
1928 | c->attr.codimension = 1; | |
1929 | if (c->as->rank) | |
1930 | c->attr.dimension = 1; | |
1931 | } | |
4ee9c684 | 1932 | *as = NULL; |
1933 | ||
36d310d0 | 1934 | gfc_apply_init (&c->ts, &c->attr, c->initializer); |
a2f51d5f | 1935 | |
4ee9c684 | 1936 | /* Check array components. */ |
3be2b8d5 | 1937 | if (!c->attr.dimension) |
b3704193 | 1938 | goto scalar; |
4ee9c684 | 1939 | |
3be2b8d5 | 1940 | if (c->attr.pointer) |
4ee9c684 | 1941 | { |
1942 | if (c->as->type != AS_DEFERRED) | |
1943 | { | |
2294b616 | 1944 | gfc_error ("Pointer array component of structure at %C must have a " |
1945 | "deferred shape"); | |
60e19868 | 1946 | t = false; |
2294b616 | 1947 | } |
1948 | } | |
3be2b8d5 | 1949 | else if (c->attr.allocatable) |
2294b616 | 1950 | { |
1951 | if (c->as->type != AS_DEFERRED) | |
1952 | { | |
1953 | gfc_error ("Allocatable component of structure at %C must have a " | |
1954 | "deferred shape"); | |
60e19868 | 1955 | t = false; |
4ee9c684 | 1956 | } |
1957 | } | |
1958 | else | |
1959 | { | |
1960 | if (c->as->type != AS_EXPLICIT) | |
1961 | { | |
1a9745d2 | 1962 | gfc_error ("Array component of structure at %C must have an " |
1963 | "explicit shape"); | |
60e19868 | 1964 | t = false; |
4ee9c684 | 1965 | } |
1966 | } | |
1967 | ||
b3704193 | 1968 | scalar: |
1969 | if (c->ts.type == BT_CLASS) | |
d9c9afea | 1970 | { |
e8393d49 | 1971 | bool t2 = gfc_build_class_symbol (&c->ts, &c->attr, &c->as); |
431a19be | 1972 | |
60e19868 | 1973 | if (t) |
431a19be | 1974 | t = t2; |
d9c9afea | 1975 | } |
1976 | ||
b3704193 | 1977 | return t; |
4ee9c684 | 1978 | } |
1979 | ||
1980 | ||
1981 | /* Match a 'NULL()', and possibly take care of some side effects. */ | |
1982 | ||
1983 | match | |
1a9745d2 | 1984 | gfc_match_null (gfc_expr **result) |
4ee9c684 | 1985 | { |
1986 | gfc_symbol *sym; | |
f9d34e9a | 1987 | match m, m2 = MATCH_NO; |
4ee9c684 | 1988 | |
f9d34e9a | 1989 | if ((m = gfc_match (" null ( )")) == MATCH_ERROR) |
1990 | return MATCH_ERROR; | |
1991 | ||
1992 | if (m == MATCH_NO) | |
1993 | { | |
1994 | locus old_loc; | |
1995 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
1996 | ||
d780a64b | 1997 | if ((m2 = gfc_match (" null (")) != MATCH_YES) |
f9d34e9a | 1998 | return m2; |
1999 | ||
2000 | old_loc = gfc_current_locus; | |
2001 | if ((m2 = gfc_match (" %n ) ", name)) == MATCH_ERROR) | |
2002 | return MATCH_ERROR; | |
2003 | if (m2 != MATCH_YES | |
2004 | && ((m2 = gfc_match (" mold = %n )", name)) == MATCH_ERROR)) | |
2005 | return MATCH_ERROR; | |
2006 | if (m2 == MATCH_NO) | |
2007 | { | |
2008 | gfc_current_locus = old_loc; | |
2009 | return MATCH_NO; | |
2010 | } | |
2011 | } | |
4ee9c684 | 2012 | |
2013 | /* The NULL symbol now has to be/become an intrinsic function. */ | |
2014 | if (gfc_get_symbol ("null", NULL, &sym)) | |
2015 | { | |
2016 | gfc_error ("NULL() initialization at %C is ambiguous"); | |
2017 | return MATCH_ERROR; | |
2018 | } | |
2019 | ||
2020 | gfc_intrinsic_symbol (sym); | |
2021 | ||
2022 | if (sym->attr.proc != PROC_INTRINSIC | |
ddf8ce2d | 2023 | && !(sym->attr.use_assoc && sym->attr.intrinsic) |
60e19868 | 2024 | && (!gfc_add_procedure(&sym->attr, PROC_INTRINSIC, sym->name, NULL) |
2025 | || !gfc_add_function (&sym->attr, sym->name, NULL))) | |
4ee9c684 | 2026 | return MATCH_ERROR; |
2027 | ||
126387b5 | 2028 | *result = gfc_get_null_expr (&gfc_current_locus); |
4ee9c684 | 2029 | |
f9d34e9a | 2030 | /* Invalid per F2008, C512. */ |
2031 | if (m2 == MATCH_YES) | |
2032 | { | |
2033 | gfc_error ("NULL() initialization at %C may not have MOLD"); | |
2034 | return MATCH_ERROR; | |
2035 | } | |
2036 | ||
4ee9c684 | 2037 | return MATCH_YES; |
2038 | } | |
2039 | ||
2040 | ||
23d075f4 | 2041 | /* Match the initialization expr for a data pointer or procedure pointer. */ |
2042 | ||
2043 | static match | |
2044 | match_pointer_init (gfc_expr **init, int procptr) | |
2045 | { | |
2046 | match m; | |
2047 | ||
d7cd448a | 2048 | if (gfc_pure (NULL) && !gfc_comp_struct (gfc_state_stack->state)) |
23d075f4 | 2049 | { |
2050 | gfc_error ("Initialization of pointer at %C is not allowed in " | |
2051 | "a PURE procedure"); | |
2052 | return MATCH_ERROR; | |
2053 | } | |
c77badf3 | 2054 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
23d075f4 | 2055 | |
df084314 | 2056 | /* Match NULL() initialization. */ |
23d075f4 | 2057 | m = gfc_match_null (init); |
2058 | if (m != MATCH_NO) | |
2059 | return m; | |
2060 | ||
2061 | /* Match non-NULL initialization. */ | |
f3efaada | 2062 | gfc_matching_ptr_assignment = !procptr; |
23d075f4 | 2063 | gfc_matching_procptr_assignment = procptr; |
2064 | m = gfc_match_rvalue (init); | |
f3efaada | 2065 | gfc_matching_ptr_assignment = 0; |
23d075f4 | 2066 | gfc_matching_procptr_assignment = 0; |
2067 | if (m == MATCH_ERROR) | |
2068 | return MATCH_ERROR; | |
2069 | else if (m == MATCH_NO) | |
2070 | { | |
2071 | gfc_error ("Error in pointer initialization at %C"); | |
2072 | return MATCH_ERROR; | |
2073 | } | |
2074 | ||
7c94d8e5 | 2075 | if (!procptr && !gfc_resolve_expr (*init)) |
2076 | return MATCH_ERROR; | |
8db94b3b | 2077 | |
60e19868 | 2078 | if (!gfc_notify_std (GFC_STD_F2008, "non-NULL pointer " |
2079 | "initialization at %C")) | |
23d075f4 | 2080 | return MATCH_ERROR; |
2081 | ||
2082 | return MATCH_YES; | |
2083 | } | |
2084 | ||
2085 | ||
60e19868 | 2086 | static bool |
f3e89339 | 2087 | check_function_name (char *name) |
2088 | { | |
2089 | /* In functions that have a RESULT variable defined, the function name always | |
2090 | refers to function calls. Therefore, the name is not allowed to appear in | |
2091 | specification statements. When checking this, be careful about | |
2092 | 'hidden' procedure pointer results ('ppr@'). */ | |
2093 | ||
2094 | if (gfc_current_state () == COMP_FUNCTION) | |
2095 | { | |
2096 | gfc_symbol *block = gfc_current_block (); | |
2097 | if (block && block->result && block->result != block | |
2098 | && strcmp (block->result->name, "ppr@") != 0 | |
2099 | && strcmp (block->name, name) == 0) | |
2100 | { | |
716da296 | 2101 | gfc_error ("Function name %qs not allowed at %C", name); |
60e19868 | 2102 | return false; |
f3e89339 | 2103 | } |
2104 | } | |
2105 | ||
60e19868 | 2106 | return true; |
f3e89339 | 2107 | } |
2108 | ||
2109 | ||
4ee9c684 | 2110 | /* Match a variable name with an optional initializer. When this |
2111 | subroutine is called, a variable is expected to be parsed next. | |
2112 | Depending on what is happening at the moment, updates either the | |
2113 | symbol table or the current interface. */ | |
2114 | ||
2115 | static match | |
3923b69f | 2116 | variable_decl (int elem) |
4ee9c684 | 2117 | { |
2118 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
2119 | gfc_expr *initializer, *char_len; | |
2120 | gfc_array_spec *as; | |
b549d2a5 | 2121 | gfc_array_spec *cp_as; /* Extra copy for Cray Pointees. */ |
4ee9c684 | 2122 | gfc_charlen *cl; |
3e715c81 | 2123 | bool cl_deferred; |
4ee9c684 | 2124 | locus var_locus; |
2125 | match m; | |
60e19868 | 2126 | bool t; |
b549d2a5 | 2127 | gfc_symbol *sym; |
4ee9c684 | 2128 | |
2129 | initializer = NULL; | |
2130 | as = NULL; | |
b549d2a5 | 2131 | cp_as = NULL; |
4ee9c684 | 2132 | |
2133 | /* When we get here, we've just matched a list of attributes and | |
2134 | maybe a type and a double colon. The next thing we expect to see | |
2135 | is the name of the symbol. */ | |
2136 | m = gfc_match_name (name); | |
2137 | if (m != MATCH_YES) | |
2138 | goto cleanup; | |
2139 | ||
cbb9e6aa | 2140 | var_locus = gfc_current_locus; |
4ee9c684 | 2141 | |
2142 | /* Now we could see the optional array spec. or character length. */ | |
aff518b0 | 2143 | m = gfc_match_array_spec (&as, true, true); |
eae6c6c1 | 2144 | if (m == MATCH_ERROR) |
4ee9c684 | 2145 | goto cleanup; |
3b6a4b41 | 2146 | |
4ee9c684 | 2147 | if (m == MATCH_NO) |
2148 | as = gfc_copy_array_spec (current_as); | |
9b58b4c7 | 2149 | else if (current_as |
60e19868 | 2150 | && !merge_array_spec (current_as, as, true)) |
9b58b4c7 | 2151 | { |
2152 | m = MATCH_ERROR; | |
2153 | goto cleanup; | |
2154 | } | |
4ee9c684 | 2155 | |
829d7a08 | 2156 | if (flag_cray_pointer) |
eae6c6c1 | 2157 | cp_as = gfc_copy_array_spec (as); |
2158 | ||
ae2864a8 | 2159 | /* At this point, we know for sure if the symbol is PARAMETER and can thus |
2160 | determine (and check) whether it can be implied-shape. If it | |
2161 | was parsed as assumed-size, change it because PARAMETERs can not | |
2162 | be assumed-size. */ | |
2163 | if (as) | |
2164 | { | |
2165 | if (as->type == AS_IMPLIED_SHAPE && current_attr.flavor != FL_PARAMETER) | |
2166 | { | |
2167 | m = MATCH_ERROR; | |
716da296 | 2168 | gfc_error ("Non-PARAMETER symbol %qs at %L can't be implied-shape", |
ae2864a8 | 2169 | name, &var_locus); |
2170 | goto cleanup; | |
2171 | } | |
2172 | ||
2173 | if (as->type == AS_ASSUMED_SIZE && as->rank == 1 | |
2174 | && current_attr.flavor == FL_PARAMETER) | |
2175 | as->type = AS_IMPLIED_SHAPE; | |
2176 | ||
2177 | if (as->type == AS_IMPLIED_SHAPE | |
76e207a9 | 2178 | && !gfc_notify_std (GFC_STD_F2008, "Implied-shape array at %L", |
60e19868 | 2179 | &var_locus)) |
ae2864a8 | 2180 | { |
2181 | m = MATCH_ERROR; | |
2182 | goto cleanup; | |
2183 | } | |
2184 | } | |
2185 | ||
4ee9c684 | 2186 | char_len = NULL; |
2187 | cl = NULL; | |
3e715c81 | 2188 | cl_deferred = false; |
4ee9c684 | 2189 | |
2190 | if (current_ts.type == BT_CHARACTER) | |
2191 | { | |
926b8757 | 2192 | switch (match_char_length (&char_len, &cl_deferred, false)) |
4ee9c684 | 2193 | { |
2194 | case MATCH_YES: | |
d270ce52 | 2195 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
4ee9c684 | 2196 | |
2197 | cl->length = char_len; | |
2198 | break; | |
2199 | ||
3923b69f | 2200 | /* Non-constant lengths need to be copied after the first |
04b61f60 | 2201 | element. Also copy assumed lengths. */ |
4ee9c684 | 2202 | case MATCH_NO: |
04b61f60 | 2203 | if (elem > 1 |
eeebe20b | 2204 | && (current_ts.u.cl->length == NULL |
2205 | || current_ts.u.cl->length->expr_type != EXPR_CONSTANT)) | |
3923b69f | 2206 | { |
d270ce52 | 2207 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
eeebe20b | 2208 | cl->length = gfc_copy_expr (current_ts.u.cl->length); |
3923b69f | 2209 | } |
2210 | else | |
eeebe20b | 2211 | cl = current_ts.u.cl; |
3923b69f | 2212 | |
3e715c81 | 2213 | cl_deferred = current_ts.deferred; |
2214 | ||
4ee9c684 | 2215 | break; |
2216 | ||
2217 | case MATCH_ERROR: | |
2218 | goto cleanup; | |
2219 | } | |
2220 | } | |
2221 | ||
4b8eb6ca | 2222 | /* The dummy arguments and result of the abreviated form of MODULE |
2223 | PROCEDUREs, used in SUBMODULES should not be redefined. */ | |
2224 | if (gfc_current_ns->proc_name | |
2225 | && gfc_current_ns->proc_name->abr_modproc_decl) | |
2226 | { | |
2227 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2228 | if (sym != NULL && (sym->attr.dummy || sym->attr.result)) | |
2229 | { | |
2230 | m = MATCH_ERROR; | |
2f7de6c1 | 2231 | gfc_error ("%qs at %C is a redefinition of the declaration " |
4b8eb6ca | 2232 | "in the corresponding interface for MODULE " |
2f7de6c1 | 2233 | "PROCEDURE %qs", sym->name, |
4b8eb6ca | 2234 | gfc_current_ns->proc_name->name); |
2235 | goto cleanup; | |
2236 | } | |
2237 | } | |
2238 | ||
b549d2a5 | 2239 | /* If this symbol has already shown up in a Cray Pointer declaration, |
322680b5 | 2240 | and this is not a component declaration, |
f6d0e37a | 2241 | then we want to set the type & bail out. */ |
d7cd448a | 2242 | if (flag_cray_pointer && !gfc_comp_struct (gfc_current_state ())) |
b549d2a5 | 2243 | { |
2244 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2245 | if (sym != NULL && sym->attr.cray_pointee) | |
2246 | { | |
2247 | sym->ts.type = current_ts.type; | |
2248 | sym->ts.kind = current_ts.kind; | |
eeebe20b | 2249 | sym->ts.u.cl = cl; |
2250 | sym->ts.u.derived = current_ts.u.derived; | |
c5d33754 | 2251 | sym->ts.is_c_interop = current_ts.is_c_interop; |
2252 | sym->ts.is_iso_c = current_ts.is_iso_c; | |
b549d2a5 | 2253 | m = MATCH_YES; |
8db94b3b | 2254 | |
b549d2a5 | 2255 | /* Check to see if we have an array specification. */ |
2256 | if (cp_as != NULL) | |
2257 | { | |
2258 | if (sym->as != NULL) | |
2259 | { | |
7698a624 | 2260 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
b549d2a5 | 2261 | gfc_free_array_spec (cp_as); |
2262 | m = MATCH_ERROR; | |
2263 | goto cleanup; | |
2264 | } | |
2265 | else | |
2266 | { | |
60e19868 | 2267 | if (!gfc_set_array_spec (sym, cp_as, &var_locus)) |
b549d2a5 | 2268 | gfc_internal_error ("Couldn't set pointee array spec."); |
e14bee04 | 2269 | |
b549d2a5 | 2270 | /* Fix the array spec. */ |
e14bee04 | 2271 | m = gfc_mod_pointee_as (sym->as); |
b549d2a5 | 2272 | if (m == MATCH_ERROR) |
2273 | goto cleanup; | |
2274 | } | |
e14bee04 | 2275 | } |
b549d2a5 | 2276 | goto cleanup; |
2277 | } | |
2278 | else | |
2279 | { | |
2280 | gfc_free_array_spec (cp_as); | |
2281 | } | |
2282 | } | |
e14bee04 | 2283 | |
1e057e9b | 2284 | /* Procedure pointer as function result. */ |
2285 | if (gfc_current_state () == COMP_FUNCTION | |
2286 | && strcmp ("ppr@", gfc_current_block ()->name) == 0 | |
2287 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) == 0) | |
2288 | strcpy (name, "ppr@"); | |
2289 | ||
2290 | if (gfc_current_state () == COMP_FUNCTION | |
2291 | && strcmp (name, gfc_current_block ()->name) == 0 | |
2292 | && gfc_current_block ()->result | |
2293 | && strcmp ("ppr@", gfc_current_block ()->result->name) == 0) | |
2294 | strcpy (name, "ppr@"); | |
e14bee04 | 2295 | |
4ee9c684 | 2296 | /* OK, we've successfully matched the declaration. Now put the |
2297 | symbol in the current namespace, because it might be used in the | |
fe06c0d5 | 2298 | optional initialization expression for this symbol, e.g. this is |
4ee9c684 | 2299 | perfectly legal: |
2300 | ||
2301 | integer, parameter :: i = huge(i) | |
2302 | ||
2303 | This is only true for parameters or variables of a basic type. | |
2304 | For components of derived types, it is not true, so we don't | |
2305 | create a symbol for those yet. If we fail to create the symbol, | |
2306 | bail out. */ | |
d7cd448a | 2307 | if (!gfc_comp_struct (gfc_current_state ()) |
60e19868 | 2308 | && !build_sym (name, cl, cl_deferred, &as, &var_locus)) |
4ee9c684 | 2309 | { |
b8a51d79 | 2310 | m = MATCH_ERROR; |
2311 | goto cleanup; | |
2312 | } | |
2313 | ||
60e19868 | 2314 | if (!check_function_name (name)) |
4ee9c684 | 2315 | { |
4ee9c684 | 2316 | m = MATCH_ERROR; |
2317 | goto cleanup; | |
2318 | } | |
2319 | ||
b4f45d02 | 2320 | /* We allow old-style initializations of the form |
2321 | integer i /2/, j(4) /3*3, 1/ | |
2322 | (if no colon has been seen). These are different from data | |
2323 | statements in that initializers are only allowed to apply to the | |
2324 | variable immediately preceding, i.e. | |
2325 | integer i, j /1, 2/ | |
2326 | is not allowed. Therefore we have to do some work manually, that | |
cca3db55 | 2327 | could otherwise be left to the matchers for DATA statements. */ |
b4f45d02 | 2328 | |
2329 | if (!colon_seen && gfc_match (" /") == MATCH_YES) | |
2330 | { | |
60e19868 | 2331 | if (!gfc_notify_std (GFC_STD_GNU, "Old-style " |
2332 | "initialization at %C")) | |
b4f45d02 | 2333 | return MATCH_ERROR; |
d7cd448a | 2334 | |
2335 | /* Allow old style initializations for components of STRUCTUREs and MAPs | |
2336 | but not components of derived types. */ | |
d57a1422 | 2337 | else if (gfc_current_state () == COMP_DERIVED) |
2338 | { | |
2339 | gfc_error ("Invalid old style initialization for derived type " | |
2340 | "component at %C"); | |
2341 | m = MATCH_ERROR; | |
2342 | goto cleanup; | |
2343 | } | |
8db94b3b | 2344 | |
d7cd448a | 2345 | /* For structure components, read the initializer as a special |
2346 | expression and let the rest of this function apply the initializer | |
2347 | as usual. */ | |
2348 | else if (gfc_comp_struct (gfc_current_state ())) | |
2349 | { | |
2350 | m = match_clist_expr (&initializer, ¤t_ts, as); | |
2351 | if (m == MATCH_NO) | |
2352 | gfc_error ("Syntax error in old style initialization of %s at %C", | |
2353 | name); | |
2354 | if (m != MATCH_YES) | |
2355 | goto cleanup; | |
2356 | } | |
2357 | ||
2358 | /* Otherwise we treat the old style initialization just like a | |
2359 | DATA declaration for the current variable. */ | |
2360 | else | |
2361 | return match_old_style_init (name); | |
b4f45d02 | 2362 | } |
2363 | ||
4ee9c684 | 2364 | /* The double colon must be present in order to have initializers. |
2365 | Otherwise the statement is ambiguous with an assignment statement. */ | |
2366 | if (colon_seen) | |
2367 | { | |
2368 | if (gfc_match (" =>") == MATCH_YES) | |
2369 | { | |
4ee9c684 | 2370 | if (!current_attr.pointer) |
2371 | { | |
2372 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
2373 | m = MATCH_ERROR; | |
2374 | goto cleanup; | |
2375 | } | |
2376 | ||
23d075f4 | 2377 | m = match_pointer_init (&initializer, 0); |
4ee9c684 | 2378 | if (m != MATCH_YES) |
2379 | goto cleanup; | |
4ee9c684 | 2380 | } |
2381 | else if (gfc_match_char ('=') == MATCH_YES) | |
2382 | { | |
2383 | if (current_attr.pointer) | |
2384 | { | |
0d2b3c9c | 2385 | gfc_error ("Pointer initialization at %C requires %<=>%>, " |
2386 | "not %<=%>"); | |
4ee9c684 | 2387 | m = MATCH_ERROR; |
2388 | goto cleanup; | |
2389 | } | |
2390 | ||
2391 | m = gfc_match_init_expr (&initializer); | |
2392 | if (m == MATCH_NO) | |
2393 | { | |
2394 | gfc_error ("Expected an initialization expression at %C"); | |
2395 | m = MATCH_ERROR; | |
2396 | } | |
2397 | ||
b3a420c5 | 2398 | if (current_attr.flavor != FL_PARAMETER && gfc_pure (NULL) |
d7cd448a | 2399 | && !gfc_comp_struct (gfc_state_stack->state)) |
4ee9c684 | 2400 | { |
1a9745d2 | 2401 | gfc_error ("Initialization of variable at %C is not allowed in " |
2402 | "a PURE procedure"); | |
4ee9c684 | 2403 | m = MATCH_ERROR; |
2404 | } | |
2405 | ||
c77badf3 | 2406 | if (current_attr.flavor != FL_PARAMETER |
d7cd448a | 2407 | && !gfc_comp_struct (gfc_state_stack->state)) |
c77badf3 | 2408 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
2409 | ||
4ee9c684 | 2410 | if (m != MATCH_YES) |
2411 | goto cleanup; | |
2412 | } | |
8ffad0f9 | 2413 | } |
2414 | ||
2294b616 | 2415 | if (initializer != NULL && current_attr.allocatable |
d7cd448a | 2416 | && gfc_comp_struct (gfc_current_state ())) |
2294b616 | 2417 | { |
1a9745d2 | 2418 | gfc_error ("Initialization of allocatable component at %C is not " |
2419 | "allowed"); | |
2294b616 | 2420 | m = MATCH_ERROR; |
2421 | goto cleanup; | |
2422 | } | |
2423 | ||
d9b3f26b | 2424 | /* Add the initializer. Note that it is fine if initializer is |
4ee9c684 | 2425 | NULL here, because we sometimes also need to check if a |
2426 | declaration *must* have an initialization expression. */ | |
d7cd448a | 2427 | if (!gfc_comp_struct (gfc_current_state ())) |
4ee9c684 | 2428 | t = add_init_expr_to_sym (name, &initializer, &var_locus); |
2429 | else | |
d9b3f26b | 2430 | { |
2294b616 | 2431 | if (current_ts.type == BT_DERIVED |
1a9745d2 | 2432 | && !current_attr.pointer && !initializer) |
d9b3f26b | 2433 | initializer = gfc_default_initializer (¤t_ts); |
2434 | t = build_struct (name, cl, &initializer, &as); | |
d7cd448a | 2435 | |
2436 | /* If we match a nested structure definition we expect to see the | |
2437 | * body even if the variable declarations blow up, so we need to keep | |
2438 | * the structure declaration around. */ | |
2439 | if (gfc_new_block && gfc_new_block->attr.flavor == FL_STRUCT) | |
2440 | gfc_commit_symbol (gfc_new_block); | |
d9b3f26b | 2441 | } |
4ee9c684 | 2442 | |
60e19868 | 2443 | m = (t) ? MATCH_YES : MATCH_ERROR; |
4ee9c684 | 2444 | |
2445 | cleanup: | |
2446 | /* Free stuff up and return. */ | |
2447 | gfc_free_expr (initializer); | |
2448 | gfc_free_array_spec (as); | |
2449 | ||
2450 | return m; | |
2451 | } | |
2452 | ||
2453 | ||
d10f89ee | 2454 | /* Match an extended-f77 "TYPESPEC*bytesize"-style kind specification. |
2455 | This assumes that the byte size is equal to the kind number for | |
2456 | non-COMPLEX types, and equal to twice the kind number for COMPLEX. */ | |
4ee9c684 | 2457 | |
2458 | match | |
1a9745d2 | 2459 | gfc_match_old_kind_spec (gfc_typespec *ts) |
4ee9c684 | 2460 | { |
2461 | match m; | |
3bd3b616 | 2462 | int original_kind; |
4ee9c684 | 2463 | |
2464 | if (gfc_match_char ('*') != MATCH_YES) | |
2465 | return MATCH_NO; | |
2466 | ||
3bd3b616 | 2467 | m = gfc_match_small_literal_int (&ts->kind, NULL); |
4ee9c684 | 2468 | if (m != MATCH_YES) |
2469 | return MATCH_ERROR; | |
2470 | ||
b118a35b | 2471 | original_kind = ts->kind; |
2472 | ||
4ee9c684 | 2473 | /* Massage the kind numbers for complex types. */ |
b118a35b | 2474 | if (ts->type == BT_COMPLEX) |
2475 | { | |
2476 | if (ts->kind % 2) | |
1a9745d2 | 2477 | { |
2478 | gfc_error ("Old-style type declaration %s*%d not supported at %C", | |
2479 | gfc_basic_typename (ts->type), original_kind); | |
2480 | return MATCH_ERROR; | |
2481 | } | |
b118a35b | 2482 | ts->kind /= 2; |
2d76519f | 2483 | |
2484 | } | |
2485 | ||
eb106faf | 2486 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
2d76519f | 2487 | ts->kind = 8; |
2488 | ||
2489 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2490 | { | |
2491 | if (ts->kind == 4) | |
2492 | { | |
eb106faf | 2493 | if (flag_real4_kind == 8) |
2d76519f | 2494 | ts->kind = 8; |
eb106faf | 2495 | if (flag_real4_kind == 10) |
2d76519f | 2496 | ts->kind = 10; |
eb106faf | 2497 | if (flag_real4_kind == 16) |
2d76519f | 2498 | ts->kind = 16; |
2499 | } | |
2500 | ||
2501 | if (ts->kind == 8) | |
2502 | { | |
eb106faf | 2503 | if (flag_real8_kind == 4) |
2d76519f | 2504 | ts->kind = 4; |
eb106faf | 2505 | if (flag_real8_kind == 10) |
2d76519f | 2506 | ts->kind = 10; |
eb106faf | 2507 | if (flag_real8_kind == 16) |
2d76519f | 2508 | ts->kind = 16; |
2509 | } | |
b118a35b | 2510 | } |
4ee9c684 | 2511 | |
f2d4ef3b | 2512 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
4ee9c684 | 2513 | { |
b118a35b | 2514 | gfc_error ("Old-style type declaration %s*%d not supported at %C", |
1a9745d2 | 2515 | gfc_basic_typename (ts->type), original_kind); |
4ee9c684 | 2516 | return MATCH_ERROR; |
2517 | } | |
2518 | ||
76e207a9 | 2519 | if (!gfc_notify_std (GFC_STD_GNU, |
2520 | "Nonstandard type declaration %s*%d at %C", | |
60e19868 | 2521 | gfc_basic_typename(ts->type), original_kind)) |
be7f01a1 | 2522 | return MATCH_ERROR; |
2523 | ||
4ee9c684 | 2524 | return MATCH_YES; |
2525 | } | |
2526 | ||
2527 | ||
2528 | /* Match a kind specification. Since kinds are generally optional, we | |
2529 | usually return MATCH_NO if something goes wrong. If a "kind=" | |
2530 | string is found, then we know we have an error. */ | |
2531 | ||
2532 | match | |
67a51c8e | 2533 | gfc_match_kind_spec (gfc_typespec *ts, bool kind_expr_only) |
4ee9c684 | 2534 | { |
67a51c8e | 2535 | locus where, loc; |
4ee9c684 | 2536 | gfc_expr *e; |
2537 | match m, n; | |
c632ff3d | 2538 | char c; |
4ee9c684 | 2539 | const char *msg; |
2540 | ||
2541 | m = MATCH_NO; | |
67a51c8e | 2542 | n = MATCH_YES; |
4ee9c684 | 2543 | e = NULL; |
2544 | ||
67a51c8e | 2545 | where = loc = gfc_current_locus; |
2546 | ||
2547 | if (kind_expr_only) | |
2548 | goto kind_expr; | |
4ee9c684 | 2549 | |
2550 | if (gfc_match_char ('(') == MATCH_NO) | |
2551 | return MATCH_NO; | |
2552 | ||
2553 | /* Also gobbles optional text. */ | |
2554 | if (gfc_match (" kind = ") == MATCH_YES) | |
2555 | m = MATCH_ERROR; | |
2556 | ||
67a51c8e | 2557 | loc = gfc_current_locus; |
2558 | ||
2559 | kind_expr: | |
4ee9c684 | 2560 | n = gfc_match_init_expr (&e); |
67a51c8e | 2561 | |
4ee9c684 | 2562 | if (n != MATCH_YES) |
67a51c8e | 2563 | { |
077932f9 | 2564 | if (gfc_matching_function) |
67a51c8e | 2565 | { |
8db94b3b | 2566 | /* The function kind expression might include use associated or |
077932f9 | 2567 | imported parameters and try again after the specification |
2568 | expressions..... */ | |
67a51c8e | 2569 | if (gfc_match_char (')') != MATCH_YES) |
2570 | { | |
2571 | gfc_error ("Missing right parenthesis at %C"); | |
2572 | m = MATCH_ERROR; | |
2573 | goto no_match; | |
2574 | } | |
2575 | ||
2576 | gfc_free_expr (e); | |
67a51c8e | 2577 | gfc_undo_symbols (); |
2578 | return MATCH_YES; | |
2579 | } | |
2580 | else | |
2581 | { | |
2582 | /* ....or else, the match is real. */ | |
2583 | if (n == MATCH_NO) | |
2584 | gfc_error ("Expected initialization expression at %C"); | |
2585 | if (n != MATCH_YES) | |
2586 | return MATCH_ERROR; | |
2587 | } | |
2588 | } | |
4ee9c684 | 2589 | |
2590 | if (e->rank != 0) | |
2591 | { | |
2592 | gfc_error ("Expected scalar initialization expression at %C"); | |
2593 | m = MATCH_ERROR; | |
2594 | goto no_match; | |
2595 | } | |
2596 | ||
2597 | msg = gfc_extract_int (e, &ts->kind); | |
077932f9 | 2598 | |
4ee9c684 | 2599 | if (msg != NULL) |
2600 | { | |
2601 | gfc_error (msg); | |
2602 | m = MATCH_ERROR; | |
2603 | goto no_match; | |
2604 | } | |
2605 | ||
c5d33754 | 2606 | /* Before throwing away the expression, let's see if we had a |
2607 | C interoperable kind (and store the fact). */ | |
2608 | if (e->ts.is_c_interop == 1) | |
2609 | { | |
df084314 | 2610 | /* Mark this as C interoperable if being declared with one |
c5d33754 | 2611 | of the named constants from iso_c_binding. */ |
2612 | ts->is_c_interop = e->ts.is_iso_c; | |
2613 | ts->f90_type = e->ts.f90_type; | |
2614 | } | |
8db94b3b | 2615 | |
4ee9c684 | 2616 | gfc_free_expr (e); |
2617 | e = NULL; | |
2618 | ||
c5d33754 | 2619 | /* Ignore errors to this point, if we've gotten here. This means |
2620 | we ignore the m=MATCH_ERROR from above. */ | |
f2d4ef3b | 2621 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
4ee9c684 | 2622 | { |
2623 | gfc_error ("Kind %d not supported for type %s at %C", ts->kind, | |
2624 | gfc_basic_typename (ts->type)); | |
c632ff3d | 2625 | gfc_current_locus = where; |
2626 | return MATCH_ERROR; | |
4ee9c684 | 2627 | } |
c632ff3d | 2628 | |
209d3778 | 2629 | /* Warn if, e.g., c_int is used for a REAL variable, but not |
2630 | if, e.g., c_double is used for COMPLEX as the standard | |
2631 | explicitly says that the kind type parameter for complex and real | |
2632 | variable is the same, i.e. c_float == c_float_complex. */ | |
2633 | if (ts->f90_type != BT_UNKNOWN && ts->f90_type != ts->type | |
2634 | && !((ts->f90_type == BT_REAL && ts->type == BT_COMPLEX) | |
2635 | || (ts->f90_type == BT_COMPLEX && ts->type == BT_REAL))) | |
6f521718 | 2636 | gfc_warning_now (0, "C kind type parameter is for type %s but type at %L " |
ded233a6 | 2637 | "is %s", gfc_basic_typename (ts->f90_type), &where, |
2638 | gfc_basic_typename (ts->type)); | |
209d3778 | 2639 | |
c632ff3d | 2640 | gfc_gobble_whitespace (); |
e0be6f02 | 2641 | if ((c = gfc_next_ascii_char ()) != ')' |
2642 | && (ts->type != BT_CHARACTER || c != ',')) | |
4ee9c684 | 2643 | { |
c632ff3d | 2644 | if (ts->type == BT_CHARACTER) |
2645 | gfc_error ("Missing right parenthesis or comma at %C"); | |
2646 | else | |
2647 | gfc_error ("Missing right parenthesis at %C"); | |
67a51c8e | 2648 | m = MATCH_ERROR; |
4ee9c684 | 2649 | } |
c5d33754 | 2650 | else |
2651 | /* All tests passed. */ | |
2652 | m = MATCH_YES; | |
4ee9c684 | 2653 | |
c5d33754 | 2654 | if(m == MATCH_ERROR) |
2655 | gfc_current_locus = where; | |
2d76519f | 2656 | |
eb106faf | 2657 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
2d76519f | 2658 | ts->kind = 8; |
2659 | ||
2660 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2661 | { | |
2662 | if (ts->kind == 4) | |
2663 | { | |
eb106faf | 2664 | if (flag_real4_kind == 8) |
2d76519f | 2665 | ts->kind = 8; |
eb106faf | 2666 | if (flag_real4_kind == 10) |
2d76519f | 2667 | ts->kind = 10; |
eb106faf | 2668 | if (flag_real4_kind == 16) |
2d76519f | 2669 | ts->kind = 16; |
2670 | } | |
2671 | ||
2672 | if (ts->kind == 8) | |
2673 | { | |
eb106faf | 2674 | if (flag_real8_kind == 4) |
2d76519f | 2675 | ts->kind = 4; |
eb106faf | 2676 | if (flag_real8_kind == 10) |
2d76519f | 2677 | ts->kind = 10; |
eb106faf | 2678 | if (flag_real8_kind == 16) |
2d76519f | 2679 | ts->kind = 16; |
2680 | } | |
2681 | } | |
2682 | ||
c5d33754 | 2683 | /* Return what we know from the test(s). */ |
2684 | return m; | |
4ee9c684 | 2685 | |
2686 | no_match: | |
2687 | gfc_free_expr (e); | |
cbb9e6aa | 2688 | gfc_current_locus = where; |
4ee9c684 | 2689 | return m; |
2690 | } | |
2691 | ||
2692 | ||
33399208 | 2693 | static match |
2694 | match_char_kind (int * kind, int * is_iso_c) | |
2695 | { | |
2696 | locus where; | |
2697 | gfc_expr *e; | |
2698 | match m, n; | |
2699 | const char *msg; | |
2700 | ||
2701 | m = MATCH_NO; | |
2702 | e = NULL; | |
2703 | where = gfc_current_locus; | |
2704 | ||
2705 | n = gfc_match_init_expr (&e); | |
c632ff3d | 2706 | |
077932f9 | 2707 | if (n != MATCH_YES && gfc_matching_function) |
c632ff3d | 2708 | { |
077932f9 | 2709 | /* The expression might include use-associated or imported |
8db94b3b | 2710 | parameters and try again after the specification |
077932f9 | 2711 | expressions. */ |
c632ff3d | 2712 | gfc_free_expr (e); |
c632ff3d | 2713 | gfc_undo_symbols (); |
2714 | return MATCH_YES; | |
2715 | } | |
2716 | ||
33399208 | 2717 | if (n == MATCH_NO) |
2718 | gfc_error ("Expected initialization expression at %C"); | |
2719 | if (n != MATCH_YES) | |
2720 | return MATCH_ERROR; | |
2721 | ||
2722 | if (e->rank != 0) | |
2723 | { | |
2724 | gfc_error ("Expected scalar initialization expression at %C"); | |
2725 | m = MATCH_ERROR; | |
2726 | goto no_match; | |
2727 | } | |
2728 | ||
2729 | msg = gfc_extract_int (e, kind); | |
2730 | *is_iso_c = e->ts.is_iso_c; | |
2731 | if (msg != NULL) | |
2732 | { | |
2733 | gfc_error (msg); | |
2734 | m = MATCH_ERROR; | |
2735 | goto no_match; | |
2736 | } | |
2737 | ||
2738 | gfc_free_expr (e); | |
2739 | ||
2740 | /* Ignore errors to this point, if we've gotten here. This means | |
2741 | we ignore the m=MATCH_ERROR from above. */ | |
2742 | if (gfc_validate_kind (BT_CHARACTER, *kind, true) < 0) | |
2743 | { | |
2744 | gfc_error ("Kind %d is not supported for CHARACTER at %C", *kind); | |
2745 | m = MATCH_ERROR; | |
2746 | } | |
2747 | else | |
2748 | /* All tests passed. */ | |
2749 | m = MATCH_YES; | |
2750 | ||
2751 | if (m == MATCH_ERROR) | |
2752 | gfc_current_locus = where; | |
8db94b3b | 2753 | |
33399208 | 2754 | /* Return what we know from the test(s). */ |
2755 | return m; | |
2756 | ||
2757 | no_match: | |
2758 | gfc_free_expr (e); | |
2759 | gfc_current_locus = where; | |
2760 | return m; | |
2761 | } | |
2762 | ||
10f5dcc0 | 2763 | |
4ee9c684 | 2764 | /* Match the various kind/length specifications in a CHARACTER |
2765 | declaration. We don't return MATCH_NO. */ | |
2766 | ||
10f5dcc0 | 2767 | match |
2768 | gfc_match_char_spec (gfc_typespec *ts) | |
4ee9c684 | 2769 | { |
33399208 | 2770 | int kind, seen_length, is_iso_c; |
4ee9c684 | 2771 | gfc_charlen *cl; |
2772 | gfc_expr *len; | |
2773 | match m; | |
3e715c81 | 2774 | bool deferred; |
33399208 | 2775 | |
4ee9c684 | 2776 | len = NULL; |
2777 | seen_length = 0; | |
33399208 | 2778 | kind = 0; |
2779 | is_iso_c = 0; | |
3e715c81 | 2780 | deferred = false; |
4ee9c684 | 2781 | |
2782 | /* Try the old-style specification first. */ | |
2783 | old_char_selector = 0; | |
2784 | ||
926b8757 | 2785 | m = match_char_length (&len, &deferred, true); |
4ee9c684 | 2786 | if (m != MATCH_NO) |
2787 | { | |
2788 | if (m == MATCH_YES) | |
2789 | old_char_selector = 1; | |
2790 | seen_length = 1; | |
2791 | goto done; | |
2792 | } | |
2793 | ||
2794 | m = gfc_match_char ('('); | |
2795 | if (m != MATCH_YES) | |
2796 | { | |
c5d33754 | 2797 | m = MATCH_YES; /* Character without length is a single char. */ |
4ee9c684 | 2798 | goto done; |
2799 | } | |
2800 | ||
c5d33754 | 2801 | /* Try the weird case: ( KIND = <int> [ , LEN = <len-param> ] ). */ |
4ee9c684 | 2802 | if (gfc_match (" kind =") == MATCH_YES) |
2803 | { | |
33399208 | 2804 | m = match_char_kind (&kind, &is_iso_c); |
8db94b3b | 2805 | |
4ee9c684 | 2806 | if (m == MATCH_ERROR) |
2807 | goto done; | |
2808 | if (m == MATCH_NO) | |
2809 | goto syntax; | |
2810 | ||
2811 | if (gfc_match (" , len =") == MATCH_NO) | |
2812 | goto rparen; | |
2813 | ||
3e715c81 | 2814 | m = char_len_param_value (&len, &deferred); |
4ee9c684 | 2815 | if (m == MATCH_NO) |
2816 | goto syntax; | |
2817 | if (m == MATCH_ERROR) | |
2818 | goto done; | |
2819 | seen_length = 1; | |
2820 | ||
2821 | goto rparen; | |
2822 | } | |
2823 | ||
f6d0e37a | 2824 | /* Try to match "LEN = <len-param>" or "LEN = <len-param>, KIND = <int>". */ |
4ee9c684 | 2825 | if (gfc_match (" len =") == MATCH_YES) |
2826 | { | |
3e715c81 | 2827 | m = char_len_param_value (&len, &deferred); |
4ee9c684 | 2828 | if (m == MATCH_NO) |
2829 | goto syntax; | |
2830 | if (m == MATCH_ERROR) | |
2831 | goto done; | |
2832 | seen_length = 1; | |
2833 | ||
2834 | if (gfc_match_char (')') == MATCH_YES) | |
2835 | goto done; | |
2836 | ||
2837 | if (gfc_match (" , kind =") != MATCH_YES) | |
2838 | goto syntax; | |
2839 | ||
33399208 | 2840 | if (match_char_kind (&kind, &is_iso_c) == MATCH_ERROR) |
2841 | goto done; | |
4ee9c684 | 2842 | |
2843 | goto rparen; | |
2844 | } | |
2845 | ||
f6d0e37a | 2846 | /* Try to match ( <len-param> ) or ( <len-param> , [ KIND = ] <int> ). */ |
3e715c81 | 2847 | m = char_len_param_value (&len, &deferred); |
4ee9c684 | 2848 | if (m == MATCH_NO) |
2849 | goto syntax; | |
2850 | if (m == MATCH_ERROR) | |
2851 | goto done; | |
2852 | seen_length = 1; | |
2853 | ||
2854 | m = gfc_match_char (')'); | |
2855 | if (m == MATCH_YES) | |
2856 | goto done; | |
2857 | ||
2858 | if (gfc_match_char (',') != MATCH_YES) | |
2859 | goto syntax; | |
2860 | ||
c5d33754 | 2861 | gfc_match (" kind ="); /* Gobble optional text. */ |
4ee9c684 | 2862 | |
33399208 | 2863 | m = match_char_kind (&kind, &is_iso_c); |
4ee9c684 | 2864 | if (m == MATCH_ERROR) |
2865 | goto done; | |
2866 | if (m == MATCH_NO) | |
2867 | goto syntax; | |
2868 | ||
2869 | rparen: | |
2870 | /* Require a right-paren at this point. */ | |
2871 | m = gfc_match_char (')'); | |
2872 | if (m == MATCH_YES) | |
2873 | goto done; | |
2874 | ||
2875 | syntax: | |
2876 | gfc_error ("Syntax error in CHARACTER declaration at %C"); | |
2877 | m = MATCH_ERROR; | |
a3cbe8cc | 2878 | gfc_free_expr (len); |
2879 | return m; | |
4ee9c684 | 2880 | |
2881 | done: | |
8d39570e | 2882 | /* Deal with character functions after USE and IMPORT statements. */ |
2883 | if (gfc_matching_function) | |
077932f9 | 2884 | { |
8d39570e | 2885 | gfc_free_expr (len); |
077932f9 | 2886 | gfc_undo_symbols (); |
2887 | return MATCH_YES; | |
2888 | } | |
2889 | ||
4ee9c684 | 2890 | if (m != MATCH_YES) |
2891 | { | |
2892 | gfc_free_expr (len); | |
2893 | return m; | |
2894 | } | |
2895 | ||
2896 | /* Do some final massaging of the length values. */ | |
d270ce52 | 2897 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
4ee9c684 | 2898 | |
2899 | if (seen_length == 0) | |
126387b5 | 2900 | cl->length = gfc_get_int_expr (gfc_default_integer_kind, NULL, 1); |
4ee9c684 | 2901 | else |
2fe2caa6 | 2902 | cl->length = len; |
4ee9c684 | 2903 | |
eeebe20b | 2904 | ts->u.cl = cl; |
33399208 | 2905 | ts->kind = kind == 0 ? gfc_default_character_kind : kind; |
3e715c81 | 2906 | ts->deferred = deferred; |
4ee9c684 | 2907 | |
df084314 | 2908 | /* We have to know if it was a C interoperable kind so we can |
c5d33754 | 2909 | do accurate type checking of bind(c) procs, etc. */ |
33399208 | 2910 | if (kind != 0) |
df084314 | 2911 | /* Mark this as C interoperable if being declared with one |
33399208 | 2912 | of the named constants from iso_c_binding. */ |
2913 | ts->is_c_interop = is_iso_c; | |
c5d33754 | 2914 | else if (len != NULL) |
33399208 | 2915 | /* Here, we might have parsed something such as: character(c_char) |
2916 | In this case, the parsing code above grabs the c_char when | |
2917 | looking for the length (line 1690, roughly). it's the last | |
2918 | testcase for parsing the kind params of a character variable. | |
2919 | However, it's not actually the length. this seems like it | |
8db94b3b | 2920 | could be an error. |
33399208 | 2921 | To see if the user used a C interop kind, test the expr |
2922 | of the so called length, and see if it's C interoperable. */ | |
2923 | ts->is_c_interop = len->ts.is_iso_c; | |
8db94b3b | 2924 | |
4ee9c684 | 2925 | return MATCH_YES; |
2926 | } | |
2927 | ||
2928 | ||
d7cd448a | 2929 | /* Matches a RECORD declaration. */ |
2930 | ||
2931 | static match | |
891196d7 | 2932 | match_record_decl (char *name) |
d7cd448a | 2933 | { |
2934 | locus old_loc; | |
2935 | old_loc = gfc_current_locus; | |
891196d7 | 2936 | match m; |
d7cd448a | 2937 | |
891196d7 | 2938 | m = gfc_match (" record /"); |
2939 | if (m == MATCH_YES) | |
d7cd448a | 2940 | { |
cf078427 | 2941 | if (!flag_dec_structure) |
d7cd448a | 2942 | { |
2943 | gfc_current_locus = old_loc; | |
2944 | gfc_error ("RECORD at %C is an extension, enable it with " | |
2945 | "-fdec-structure"); | |
2946 | return MATCH_ERROR; | |
2947 | } | |
891196d7 | 2948 | m = gfc_match (" %n/", name); |
2949 | if (m == MATCH_YES) | |
2950 | return MATCH_YES; | |
d7cd448a | 2951 | } |
2952 | ||
891196d7 | 2953 | gfc_current_locus = old_loc; |
cf078427 | 2954 | if (flag_dec_structure |
891196d7 | 2955 | && (gfc_match (" record% ") == MATCH_YES |
2956 | || gfc_match (" record%t") == MATCH_YES)) | |
2957 | gfc_error ("Structure name expected after RECORD at %C"); | |
2958 | if (m == MATCH_NO) | |
d7cd448a | 2959 | return MATCH_NO; |
891196d7 | 2960 | |
2961 | return MATCH_ERROR; | |
d7cd448a | 2962 | } |
2963 | ||
e8152f13 | 2964 | /* Matches a declaration-type-spec (F03:R502). If successful, sets the ts |
2965 | structure to the matched specification. This is necessary for FUNCTION and | |
4ee9c684 | 2966 | IMPLICIT statements. |
2967 | ||
e14bee04 | 2968 | If implicit_flag is nonzero, then we don't check for the optional |
39351103 | 2969 | kind specification. Not doing so is needed for matching an IMPLICIT |
4ee9c684 | 2970 | statement correctly. */ |
2971 | ||
67a51c8e | 2972 | match |
e8152f13 | 2973 | gfc_match_decl_type_spec (gfc_typespec *ts, int implicit_flag) |
4ee9c684 | 2974 | { |
2975 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c2958b6b | 2976 | gfc_symbol *sym, *dt_sym; |
4ee9c684 | 2977 | match m; |
e0be6f02 | 2978 | char c; |
f446fb22 | 2979 | bool seen_deferred_kind, matched_type; |
c2958b6b | 2980 | const char *dt_name; |
4ee9c684 | 2981 | |
077932f9 | 2982 | /* A belt and braces check that the typespec is correctly being treated |
2983 | as a deferred characteristic association. */ | |
2984 | seen_deferred_kind = (gfc_current_state () == COMP_FUNCTION) | |
8d39570e | 2985 | && (gfc_current_block ()->result->ts.kind == -1) |
2986 | && (ts->kind == -1); | |
4ee9c684 | 2987 | gfc_clear_ts (ts); |
077932f9 | 2988 | if (seen_deferred_kind) |
2989 | ts->kind = -1; | |
4ee9c684 | 2990 | |
c5d33754 | 2991 | /* Clear the current binding label, in case one is given. */ |
7b2060ba | 2992 | curr_binding_label = NULL; |
c5d33754 | 2993 | |
25b29122 | 2994 | if (gfc_match (" byte") == MATCH_YES) |
2995 | { | |
60e19868 | 2996 | if (!gfc_notify_std (GFC_STD_GNU, "BYTE type at %C")) |
25b29122 | 2997 | return MATCH_ERROR; |
2998 | ||
2999 | if (gfc_validate_kind (BT_INTEGER, 1, true) < 0) | |
3000 | { | |
3001 | gfc_error ("BYTE type used at %C " | |
3002 | "is not available on the target machine"); | |
3003 | return MATCH_ERROR; | |
3004 | } | |
e14bee04 | 3005 | |
25b29122 | 3006 | ts->type = BT_INTEGER; |
3007 | ts->kind = 1; | |
3008 | return MATCH_YES; | |
3009 | } | |
3010 | ||
f446fb22 | 3011 | |
8c2d8d6d | 3012 | m = gfc_match (" type ("); |
f446fb22 | 3013 | matched_type = (m == MATCH_YES); |
8c2d8d6d | 3014 | if (matched_type) |
3015 | { | |
3016 | gfc_gobble_whitespace (); | |
3017 | if (gfc_peek_ascii_char () == '*') | |
3018 | { | |
3019 | if ((m = gfc_match ("*)")) != MATCH_YES) | |
3020 | return m; | |
d7cd448a | 3021 | if (gfc_comp_struct (gfc_current_state ())) |
8c2d8d6d | 3022 | { |
3023 | gfc_error ("Assumed type at %C is not allowed for components"); | |
3024 | return MATCH_ERROR; | |
3025 | } | |
60e19868 | 3026 | if (!gfc_notify_std (GFC_STD_F2008_TS, "Assumed type " |
3027 | "at %C")) | |
8c2d8d6d | 3028 | return MATCH_ERROR; |
3029 | ts->type = BT_ASSUMED; | |
3030 | return MATCH_YES; | |
3031 | } | |
3032 | ||
3033 | m = gfc_match ("%n", name); | |
3034 | matched_type = (m == MATCH_YES); | |
3035 | } | |
3036 | ||
f446fb22 | 3037 | if ((matched_type && strcmp ("integer", name) == 0) |
3038 | || (!matched_type && gfc_match (" integer") == MATCH_YES)) | |
4ee9c684 | 3039 | { |
3040 | ts->type = BT_INTEGER; | |
b8a891cb | 3041 | ts->kind = gfc_default_integer_kind; |
4ee9c684 | 3042 | goto get_kind; |
3043 | } | |
3044 | ||
f446fb22 | 3045 | if ((matched_type && strcmp ("character", name) == 0) |
3046 | || (!matched_type && gfc_match (" character") == MATCH_YES)) | |
4ee9c684 | 3047 | { |
f446fb22 | 3048 | if (matched_type |
60e19868 | 3049 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3050 | "intrinsic-type-spec at %C")) | |
f446fb22 | 3051 | return MATCH_ERROR; |
3052 | ||
4ee9c684 | 3053 | ts->type = BT_CHARACTER; |
39351103 | 3054 | if (implicit_flag == 0) |
f446fb22 | 3055 | m = gfc_match_char_spec (ts); |
39351103 | 3056 | else |
f446fb22 | 3057 | m = MATCH_YES; |
3058 | ||
3059 | if (matched_type && m == MATCH_YES && gfc_match_char (')') != MATCH_YES) | |
3060 | m = MATCH_ERROR; | |
3061 | ||
3062 | return m; | |
4ee9c684 | 3063 | } |
3064 | ||
f446fb22 | 3065 | if ((matched_type && strcmp ("real", name) == 0) |
3066 | || (!matched_type && gfc_match (" real") == MATCH_YES)) | |
4ee9c684 | 3067 | { |
3068 | ts->type = BT_REAL; | |
b8a891cb | 3069 | ts->kind = gfc_default_real_kind; |
4ee9c684 | 3070 | goto get_kind; |
3071 | } | |
3072 | ||
f446fb22 | 3073 | if ((matched_type |
3074 | && (strcmp ("doubleprecision", name) == 0 | |
3075 | || (strcmp ("double", name) == 0 | |
3076 | && gfc_match (" precision") == MATCH_YES))) | |
3077 | || (!matched_type && gfc_match (" double precision") == MATCH_YES)) | |
4ee9c684 | 3078 | { |
f446fb22 | 3079 | if (matched_type |
60e19868 | 3080 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3081 | "intrinsic-type-spec at %C")) | |
f446fb22 | 3082 | return MATCH_ERROR; |
3083 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
3084 | return MATCH_ERROR; | |
3085 | ||
4ee9c684 | 3086 | ts->type = BT_REAL; |
b8a891cb | 3087 | ts->kind = gfc_default_double_kind; |
4ee9c684 | 3088 | return MATCH_YES; |
3089 | } | |
3090 | ||
f446fb22 | 3091 | if ((matched_type && strcmp ("complex", name) == 0) |
3092 | || (!matched_type && gfc_match (" complex") == MATCH_YES)) | |
4ee9c684 | 3093 | { |
3094 | ts->type = BT_COMPLEX; | |
b8a891cb | 3095 | ts->kind = gfc_default_complex_kind; |
4ee9c684 | 3096 | goto get_kind; |
3097 | } | |
3098 | ||
f446fb22 | 3099 | if ((matched_type |
3100 | && (strcmp ("doublecomplex", name) == 0 | |
3101 | || (strcmp ("double", name) == 0 | |
3102 | && gfc_match (" complex") == MATCH_YES))) | |
3103 | || (!matched_type && gfc_match (" double complex") == MATCH_YES)) | |
4ee9c684 | 3104 | { |
60e19868 | 3105 | if (!gfc_notify_std (GFC_STD_GNU, "DOUBLE COMPLEX at %C")) |
f446fb22 | 3106 | return MATCH_ERROR; |
3107 | ||
3108 | if (matched_type | |
60e19868 | 3109 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3110 | "intrinsic-type-spec at %C")) | |
f446fb22 | 3111 | return MATCH_ERROR; |
3112 | ||
3113 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
be7f01a1 | 3114 | return MATCH_ERROR; |
3115 | ||
4ee9c684 | 3116 | ts->type = BT_COMPLEX; |
b8a891cb | 3117 | ts->kind = gfc_default_double_kind; |
4ee9c684 | 3118 | return MATCH_YES; |
3119 | } | |
3120 | ||
f446fb22 | 3121 | if ((matched_type && strcmp ("logical", name) == 0) |
3122 | || (!matched_type && gfc_match (" logical") == MATCH_YES)) | |
4ee9c684 | 3123 | { |
3124 | ts->type = BT_LOGICAL; | |
b8a891cb | 3125 | ts->kind = gfc_default_logical_kind; |
4ee9c684 | 3126 | goto get_kind; |
3127 | } | |
3128 | ||
f446fb22 | 3129 | if (matched_type) |
3130 | m = gfc_match_char (')'); | |
3131 | ||
d7cd448a | 3132 | if (m != MATCH_YES) |
3133 | m = match_record_decl (name); | |
3134 | ||
3135 | if (matched_type || m == MATCH_YES) | |
3136 | { | |
3137 | ts->type = BT_DERIVED; | |
3138 | /* We accept record/s/ or type(s) where s is a structure, but we | |
3139 | * don't need all the extra derived-type stuff for structures. */ | |
3140 | if (gfc_find_symbol (gfc_dt_upper_string (name), NULL, 1, &sym)) | |
3141 | { | |
3142 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
3143 | return MATCH_ERROR; | |
3144 | } | |
3145 | if (sym && sym->attr.flavor == FL_STRUCT) | |
3146 | { | |
3147 | ts->u.derived = sym; | |
3148 | return MATCH_YES; | |
3149 | } | |
3150 | /* Actually a derived type. */ | |
3151 | } | |
3152 | ||
1de1b1a9 | 3153 | else |
8ca7f89c | 3154 | { |
d7cd448a | 3155 | /* Match nested STRUCTURE declarations; only valid within another |
891196d7 | 3156 | structure declaration. */ |
cf078427 | 3157 | if (flag_dec_structure |
891196d7 | 3158 | && (gfc_current_state () == COMP_STRUCTURE |
3159 | || gfc_current_state () == COMP_MAP)) | |
3160 | { | |
3161 | m = gfc_match (" structure"); | |
3162 | if (m == MATCH_YES) | |
3163 | { | |
3164 | m = gfc_match_structure_decl (); | |
3165 | if (m == MATCH_YES) | |
3166 | { | |
3167 | /* gfc_new_block is updated by match_structure_decl. */ | |
3168 | ts->type = BT_DERIVED; | |
3169 | ts->u.derived = gfc_new_block; | |
3170 | return MATCH_YES; | |
3171 | } | |
3172 | } | |
3173 | if (m == MATCH_ERROR) | |
3174 | return MATCH_ERROR; | |
3175 | } | |
d7cd448a | 3176 | |
fa102e56 | 3177 | /* Match CLASS declarations. */ |
3178 | m = gfc_match (" class ( * )"); | |
3179 | if (m == MATCH_ERROR) | |
3180 | return MATCH_ERROR; | |
3181 | else if (m == MATCH_YES) | |
3182 | { | |
a90fe829 | 3183 | gfc_symbol *upe; |
3184 | gfc_symtree *st; | |
3185 | ts->type = BT_CLASS; | |
8db94b3b | 3186 | gfc_find_symbol ("STAR", gfc_current_ns, 1, &upe); |
a90fe829 | 3187 | if (upe == NULL) |
3188 | { | |
8db94b3b | 3189 | upe = gfc_new_symbol ("STAR", gfc_current_ns); |
3190 | st = gfc_new_symtree (&gfc_current_ns->sym_root, "STAR"); | |
a90fe829 | 3191 | st->n.sym = upe; |
3192 | gfc_set_sym_referenced (upe); | |
3193 | upe->refs++; | |
3194 | upe->ts.type = BT_VOID; | |
3195 | upe->attr.unlimited_polymorphic = 1; | |
3196 | /* This is essential to force the construction of | |
3197 | unlimited polymorphic component class containers. */ | |
3198 | upe->attr.zero_comp = 1; | |
76e207a9 | 3199 | if (!gfc_add_flavor (&upe->attr, FL_DERIVED, NULL, |
60e19868 | 3200 | &gfc_current_locus)) |
f7b2c82b | 3201 | return MATCH_ERROR; |
3202 | } | |
a90fe829 | 3203 | else |
3204 | { | |
f7b2c82b | 3205 | st = gfc_get_tbp_symtree (&gfc_current_ns->sym_root, "STAR"); |
a90fe829 | 3206 | st->n.sym = upe; |
3207 | upe->refs++; | |
3208 | } | |
3209 | ts->u.derived = upe; | |
3210 | return m; | |
3211 | } | |
fa102e56 | 3212 | |
8ca7f89c | 3213 | m = gfc_match (" class ( %n )", name); |
3214 | if (m != MATCH_YES) | |
3215 | return m; | |
1de1b1a9 | 3216 | ts->type = BT_CLASS; |
8ca7f89c | 3217 | |
60e19868 | 3218 | if (!gfc_notify_std (GFC_STD_F2003, "CLASS statement at %C")) |
e8152f13 | 3219 | return MATCH_ERROR; |
8ca7f89c | 3220 | } |
4ee9c684 | 3221 | |
077932f9 | 3222 | /* Defer association of the derived type until the end of the |
3223 | specification block. However, if the derived type can be | |
8db94b3b | 3224 | found, add it to the typespec. */ |
077932f9 | 3225 | if (gfc_matching_function) |
67a51c8e | 3226 | { |
eeebe20b | 3227 | ts->u.derived = NULL; |
077932f9 | 3228 | if (gfc_current_state () != COMP_INTERFACE |
3229 | && !gfc_find_symbol (name, NULL, 1, &sym) && sym) | |
c2958b6b | 3230 | { |
3231 | sym = gfc_find_dt_in_generic (sym); | |
3232 | ts->u.derived = sym; | |
3233 | } | |
67a51c8e | 3234 | return MATCH_YES; |
3235 | } | |
3236 | ||
3237 | /* Search for the name but allow the components to be defined later. If | |
3238 | type = -1, this typespec has been seen in a function declaration but | |
c2958b6b | 3239 | the type could not be accessed at that point. The actual derived type is |
df084314 | 3240 | stored in a symtree with the first letter of the name capitalized; the |
c2958b6b | 3241 | symtree with the all lower-case name contains the associated |
3242 | generic function. */ | |
d7cd448a | 3243 | dt_name = gfc_dt_upper_string (name); |
077932f9 | 3244 | sym = NULL; |
c2958b6b | 3245 | dt_sym = NULL; |
3246 | if (ts->kind != -1) | |
4ee9c684 | 3247 | { |
c2958b6b | 3248 | gfc_get_ha_symbol (name, &sym); |
3249 | if (sym->generic && gfc_find_symbol (dt_name, NULL, 0, &dt_sym)) | |
3250 | { | |
716da296 | 3251 | gfc_error ("Type name %qs at %C is ambiguous", name); |
c2958b6b | 3252 | return MATCH_ERROR; |
3253 | } | |
3254 | if (sym->generic && !dt_sym) | |
3255 | dt_sym = gfc_find_dt_in_generic (sym); | |
4ee9c684 | 3256 | } |
67a51c8e | 3257 | else if (ts->kind == -1) |
3258 | { | |
077932f9 | 3259 | int iface = gfc_state_stack->previous->state != COMP_INTERFACE |
3260 | || gfc_current_ns->has_import_set; | |
c2958b6b | 3261 | gfc_find_symbol (name, NULL, iface, &sym); |
3262 | if (sym && sym->generic && gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
8db94b3b | 3263 | { |
716da296 | 3264 | gfc_error ("Type name %qs at %C is ambiguous", name); |
67a51c8e | 3265 | return MATCH_ERROR; |
3266 | } | |
c2958b6b | 3267 | if (sym && sym->generic && !dt_sym) |
3268 | dt_sym = gfc_find_dt_in_generic (sym); | |
67a51c8e | 3269 | |
077932f9 | 3270 | ts->kind = 0; |
67a51c8e | 3271 | if (sym == NULL) |
3272 | return MATCH_NO; | |
3273 | } | |
4ee9c684 | 3274 | |
d7cd448a | 3275 | if ((sym->attr.flavor != FL_UNKNOWN && sym->attr.flavor != FL_STRUCT |
c2958b6b | 3276 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.generic)) |
3277 | || sym->attr.subroutine) | |
3278 | { | |
e87256b0 | 3279 | gfc_error ("Type name %qs at %C conflicts with previously declared " |
3280 | "entity at %L, which has the same name", name, | |
3281 | &sym->declared_at); | |
c2958b6b | 3282 | return MATCH_ERROR; |
3283 | } | |
4ee9c684 | 3284 | |
72bec0a3 | 3285 | gfc_save_symbol_data (sym); |
077932f9 | 3286 | gfc_set_sym_referenced (sym); |
c2958b6b | 3287 | if (!sym->attr.generic |
60e19868 | 3288 | && !gfc_add_generic (&sym->attr, sym->name, NULL)) |
c2958b6b | 3289 | return MATCH_ERROR; |
3290 | ||
3291 | if (!sym->attr.function | |
60e19868 | 3292 | && !gfc_add_function (&sym->attr, sym->name, NULL)) |
c2958b6b | 3293 | return MATCH_ERROR; |
3294 | ||
3295 | if (!dt_sym) | |
3296 | { | |
3297 | gfc_interface *intr, *head; | |
3298 | ||
3299 | /* Use upper case to save the actual derived-type symbol. */ | |
3300 | gfc_get_symbol (dt_name, NULL, &dt_sym); | |
3301 | dt_sym->name = gfc_get_string (sym->name); | |
3302 | head = sym->generic; | |
3303 | intr = gfc_get_interface (); | |
3304 | intr->sym = dt_sym; | |
3305 | intr->where = gfc_current_locus; | |
3306 | intr->next = head; | |
3307 | sym->generic = intr; | |
3308 | sym->attr.if_source = IFSRC_DECL; | |
3309 | } | |
72bec0a3 | 3310 | else |
3311 | gfc_save_symbol_data (dt_sym); | |
c2958b6b | 3312 | |
3313 | gfc_set_sym_referenced (dt_sym); | |
3314 | ||
d7cd448a | 3315 | if (dt_sym->attr.flavor != FL_DERIVED && dt_sym->attr.flavor != FL_STRUCT |
60e19868 | 3316 | && !gfc_add_flavor (&dt_sym->attr, FL_DERIVED, sym->name, NULL)) |
c2958b6b | 3317 | return MATCH_ERROR; |
3318 | ||
3319 | ts->u.derived = dt_sym; | |
4ee9c684 | 3320 | |
3321 | return MATCH_YES; | |
3322 | ||
3323 | get_kind: | |
f446fb22 | 3324 | if (matched_type |
60e19868 | 3325 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3326 | "intrinsic-type-spec at %C")) | |
f446fb22 | 3327 | return MATCH_ERROR; |
3328 | ||
4ee9c684 | 3329 | /* For all types except double, derived and character, look for an |
3330 | optional kind specifier. MATCH_NO is actually OK at this point. */ | |
39351103 | 3331 | if (implicit_flag == 1) |
f446fb22 | 3332 | { |
3333 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
3334 | return MATCH_ERROR; | |
3335 | ||
3336 | return MATCH_YES; | |
3337 | } | |
4ee9c684 | 3338 | |
18f3698a | 3339 | if (gfc_current_form == FORM_FREE) |
3340 | { | |
2c89e2a0 | 3341 | c = gfc_peek_ascii_char (); |
3342 | if (!gfc_is_whitespace (c) && c != '*' && c != '(' | |
1a9745d2 | 3343 | && c != ':' && c != ',') |
f446fb22 | 3344 | { |
3345 | if (matched_type && c == ')') | |
3346 | { | |
3347 | gfc_next_ascii_char (); | |
3348 | return MATCH_YES; | |
3349 | } | |
3350 | return MATCH_NO; | |
3351 | } | |
18f3698a | 3352 | } |
3353 | ||
67a51c8e | 3354 | m = gfc_match_kind_spec (ts, false); |
4ee9c684 | 3355 | if (m == MATCH_NO && ts->type != BT_CHARACTER) |
9627a89d | 3356 | { |
3357 | m = gfc_match_old_kind_spec (ts); | |
3358 | if (gfc_validate_kind (ts->type, ts->kind, true) == -1) | |
3359 | return MATCH_ERROR; | |
3360 | } | |
4ee9c684 | 3361 | |
f446fb22 | 3362 | if (matched_type && gfc_match_char (')') != MATCH_YES) |
3363 | return MATCH_ERROR; | |
3364 | ||
077932f9 | 3365 | /* Defer association of the KIND expression of function results |
3366 | until after USE and IMPORT statements. */ | |
3367 | if ((gfc_current_state () == COMP_NONE && gfc_error_flag_test ()) | |
3368 | || gfc_matching_function) | |
3369 | return MATCH_YES; | |
3370 | ||
4ee9c684 | 3371 | if (m == MATCH_NO) |
3372 | m = MATCH_YES; /* No kind specifier found. */ | |
3373 | ||
3374 | return m; | |
3375 | } | |
3376 | ||
3377 | ||
39351103 | 3378 | /* Match an IMPLICIT NONE statement. Actually, this statement is |
3379 | already matched in parse.c, or we would not end up here in the | |
3380 | first place. So the only thing we need to check, is if there is | |
3381 | trailing garbage. If not, the match is successful. */ | |
3382 | ||
3383 | match | |
3384 | gfc_match_implicit_none (void) | |
3385 | { | |
0daab503 | 3386 | char c; |
3387 | match m; | |
3388 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
3389 | bool type = false; | |
3390 | bool external = false; | |
94fea777 | 3391 | locus cur_loc = gfc_current_locus; |
3392 | ||
3393 | if (gfc_current_ns->seen_implicit_none | |
3394 | || gfc_current_ns->has_implicit_none_export) | |
3395 | { | |
3396 | gfc_error ("Duplicate IMPLICIT NONE statement at %C"); | |
3397 | return MATCH_ERROR; | |
3398 | } | |
0daab503 | 3399 | |
3400 | gfc_gobble_whitespace (); | |
3401 | c = gfc_peek_ascii_char (); | |
3402 | if (c == '(') | |
3403 | { | |
3404 | (void) gfc_next_ascii_char (); | |
3405 | if (!gfc_notify_std (GFC_STD_F2015, "IMPORT NONE with spec list at %C")) | |
3406 | return MATCH_ERROR; | |
94fea777 | 3407 | |
3408 | gfc_gobble_whitespace (); | |
3409 | if (gfc_peek_ascii_char () == ')') | |
0daab503 | 3410 | { |
94fea777 | 3411 | (void) gfc_next_ascii_char (); |
3412 | type = true; | |
3413 | } | |
3414 | else | |
3415 | for(;;) | |
3416 | { | |
3417 | m = gfc_match (" %n", name); | |
3418 | if (m != MATCH_YES) | |
3419 | return MATCH_ERROR; | |
0daab503 | 3420 | |
94fea777 | 3421 | if (strcmp (name, "type") == 0) |
3422 | type = true; | |
3423 | else if (strcmp (name, "external") == 0) | |
3424 | external = true; | |
3425 | else | |
3426 | return MATCH_ERROR; | |
0daab503 | 3427 | |
94fea777 | 3428 | gfc_gobble_whitespace (); |
3429 | c = gfc_next_ascii_char (); | |
3430 | if (c == ',') | |
3431 | continue; | |
3432 | if (c == ')') | |
3433 | break; | |
3434 | return MATCH_ERROR; | |
3435 | } | |
0daab503 | 3436 | } |
3437 | else | |
3438 | type = true; | |
3439 | ||
3440 | if (gfc_match_eos () != MATCH_YES) | |
3441 | return MATCH_ERROR; | |
3442 | ||
94fea777 | 3443 | gfc_set_implicit_none (type, external, &cur_loc); |
0daab503 | 3444 | |
3445 | return MATCH_YES; | |
39351103 | 3446 | } |
3447 | ||
3448 | ||
3449 | /* Match the letter range(s) of an IMPLICIT statement. */ | |
3450 | ||
3451 | static match | |
b70528c7 | 3452 | match_implicit_range (void) |
39351103 | 3453 | { |
e0be6f02 | 3454 | char c, c1, c2; |
3455 | int inner; | |
39351103 | 3456 | locus cur_loc; |
3457 | ||
3458 | cur_loc = gfc_current_locus; | |
3459 | ||
3460 | gfc_gobble_whitespace (); | |
e0be6f02 | 3461 | c = gfc_next_ascii_char (); |
39351103 | 3462 | if (c != '(') |
3463 | { | |
3464 | gfc_error ("Missing character range in IMPLICIT at %C"); | |
3465 | goto bad; | |
3466 | } | |
3467 | ||
3468 | inner = 1; | |
3469 | while (inner) | |
3470 | { | |
3471 | gfc_gobble_whitespace (); | |
e0be6f02 | 3472 | c1 = gfc_next_ascii_char (); |
39351103 | 3473 | if (!ISALPHA (c1)) |
3474 | goto bad; | |
3475 | ||
3476 | gfc_gobble_whitespace (); | |
e0be6f02 | 3477 | c = gfc_next_ascii_char (); |
39351103 | 3478 | |
3479 | switch (c) | |
3480 | { | |
3481 | case ')': | |
f6d0e37a | 3482 | inner = 0; /* Fall through. */ |
39351103 | 3483 | |
3484 | case ',': | |
3485 | c2 = c1; | |
3486 | break; | |
3487 | ||
3488 | case '-': | |
3489 | gfc_gobble_whitespace (); | |
e0be6f02 | 3490 | c2 = gfc_next_ascii_char (); |
39351103 | 3491 | if (!ISALPHA (c2)) |
3492 | goto bad; | |
3493 | ||
3494 | gfc_gobble_whitespace (); | |
e0be6f02 | 3495 | c = gfc_next_ascii_char (); |
39351103 | 3496 | |
3497 | if ((c != ',') && (c != ')')) | |
3498 | goto bad; | |
3499 | if (c == ')') | |
3500 | inner = 0; | |
3501 | ||
3502 | break; | |
3503 | ||
3504 | default: | |
3505 | goto bad; | |
3506 | } | |
3507 | ||
3508 | if (c1 > c2) | |
3509 | { | |
3510 | gfc_error ("Letters must be in alphabetic order in " | |
3511 | "IMPLICIT statement at %C"); | |
3512 | goto bad; | |
3513 | } | |
3514 | ||
3515 | /* See if we can add the newly matched range to the pending | |
1a9745d2 | 3516 | implicits from this IMPLICIT statement. We do not check for |
3517 | conflicts with whatever earlier IMPLICIT statements may have | |
3518 | set. This is done when we've successfully finished matching | |
3519 | the current one. */ | |
60e19868 | 3520 | if (!gfc_add_new_implicit_range (c1, c2)) |
39351103 | 3521 | goto bad; |
3522 | } | |
3523 | ||
3524 | return MATCH_YES; | |
3525 | ||
3526 | bad: | |
3527 | gfc_syntax_error (ST_IMPLICIT); | |
3528 | ||
3529 | gfc_current_locus = cur_loc; | |
3530 | return MATCH_ERROR; | |
3531 | } | |
3532 | ||
3533 | ||
3534 | /* Match an IMPLICIT statement, storing the types for | |
3535 | gfc_set_implicit() if the statement is accepted by the parser. | |
3536 | There is a strange looking, but legal syntactic construction | |
3537 | possible. It looks like: | |
3538 | ||
3539 | IMPLICIT INTEGER (a-b) (c-d) | |
3540 | ||
3541 | This is legal if "a-b" is a constant expression that happens to | |
3542 | equal one of the legal kinds for integers. The real problem | |
3543 | happens with an implicit specification that looks like: | |
3544 | ||
3545 | IMPLICIT INTEGER (a-b) | |
3546 | ||
3547 | In this case, a typespec matcher that is "greedy" (as most of the | |
3548 | matchers are) gobbles the character range as a kindspec, leaving | |
3549 | nothing left. We therefore have to go a bit more slowly in the | |
3550 | matching process by inhibiting the kindspec checking during | |
3551 | typespec matching and checking for a kind later. */ | |
3552 | ||
3553 | match | |
3554 | gfc_match_implicit (void) | |
3555 | { | |
3556 | gfc_typespec ts; | |
3557 | locus cur_loc; | |
e0be6f02 | 3558 | char c; |
39351103 | 3559 | match m; |
3560 | ||
0daab503 | 3561 | if (gfc_current_ns->seen_implicit_none) |
3562 | { | |
3563 | gfc_error ("IMPLICIT statement at %C following an IMPLICIT NONE (type) " | |
3564 | "statement"); | |
3565 | return MATCH_ERROR; | |
3566 | } | |
3567 | ||
52179f31 | 3568 | gfc_clear_ts (&ts); |
3569 | ||
39351103 | 3570 | /* We don't allow empty implicit statements. */ |
3571 | if (gfc_match_eos () == MATCH_YES) | |
3572 | { | |
3573 | gfc_error ("Empty IMPLICIT statement at %C"); | |
3574 | return MATCH_ERROR; | |
3575 | } | |
3576 | ||
39351103 | 3577 | do |
3578 | { | |
b70528c7 | 3579 | /* First cleanup. */ |
3580 | gfc_clear_new_implicit (); | |
3581 | ||
39351103 | 3582 | /* A basic type is mandatory here. */ |
e8152f13 | 3583 | m = gfc_match_decl_type_spec (&ts, 1); |
39351103 | 3584 | if (m == MATCH_ERROR) |
3585 | goto error; | |
3586 | if (m == MATCH_NO) | |
3587 | goto syntax; | |
3588 | ||
3589 | cur_loc = gfc_current_locus; | |
b70528c7 | 3590 | m = match_implicit_range (); |
39351103 | 3591 | |
3592 | if (m == MATCH_YES) | |
3593 | { | |
b70528c7 | 3594 | /* We may have <TYPE> (<RANGE>). */ |
39351103 | 3595 | gfc_gobble_whitespace (); |
94fea777 | 3596 | c = gfc_peek_ascii_char (); |
3597 | if (c == ',' || c == '\n' || c == ';' || c == '!') | |
b70528c7 | 3598 | { |
3599 | /* Check for CHARACTER with no length parameter. */ | |
eeebe20b | 3600 | if (ts.type == BT_CHARACTER && !ts.u.cl) |
b70528c7 | 3601 | { |
b8a891cb | 3602 | ts.kind = gfc_default_character_kind; |
d270ce52 | 3603 | ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
126387b5 | 3604 | ts.u.cl->length = gfc_get_int_expr (gfc_default_integer_kind, |
3605 | NULL, 1); | |
b70528c7 | 3606 | } |
3607 | ||
3608 | /* Record the Successful match. */ | |
60e19868 | 3609 | if (!gfc_merge_new_implicit (&ts)) |
b70528c7 | 3610 | return MATCH_ERROR; |
94fea777 | 3611 | if (c == ',') |
3612 | c = gfc_next_ascii_char (); | |
3613 | else if (gfc_match_eos () == MATCH_ERROR) | |
3614 | goto error; | |
b70528c7 | 3615 | continue; |
3616 | } | |
39351103 | 3617 | |
3618 | gfc_current_locus = cur_loc; | |
3619 | } | |
3620 | ||
b70528c7 | 3621 | /* Discard the (incorrectly) matched range. */ |
3622 | gfc_clear_new_implicit (); | |
3623 | ||
3624 | /* Last chance -- check <TYPE> <SELECTOR> (<RANGE>). */ | |
3625 | if (ts.type == BT_CHARACTER) | |
10f5dcc0 | 3626 | m = gfc_match_char_spec (&ts); |
b70528c7 | 3627 | else |
39351103 | 3628 | { |
67a51c8e | 3629 | m = gfc_match_kind_spec (&ts, false); |
39351103 | 3630 | if (m == MATCH_NO) |
b70528c7 | 3631 | { |
3632 | m = gfc_match_old_kind_spec (&ts); | |
3633 | if (m == MATCH_ERROR) | |
3634 | goto error; | |
3635 | if (m == MATCH_NO) | |
3636 | goto syntax; | |
3637 | } | |
39351103 | 3638 | } |
b70528c7 | 3639 | if (m == MATCH_ERROR) |
3640 | goto error; | |
39351103 | 3641 | |
b70528c7 | 3642 | m = match_implicit_range (); |
39351103 | 3643 | if (m == MATCH_ERROR) |
3644 | goto error; | |
3645 | if (m == MATCH_NO) | |
3646 | goto syntax; | |
3647 | ||
3648 | gfc_gobble_whitespace (); | |
e0be6f02 | 3649 | c = gfc_next_ascii_char (); |
94fea777 | 3650 | if (c != ',' && gfc_match_eos () != MATCH_YES) |
39351103 | 3651 | goto syntax; |
3652 | ||
60e19868 | 3653 | if (!gfc_merge_new_implicit (&ts)) |
b70528c7 | 3654 | return MATCH_ERROR; |
39351103 | 3655 | } |
3656 | while (c == ','); | |
3657 | ||
b70528c7 | 3658 | return MATCH_YES; |
39351103 | 3659 | |
3660 | syntax: | |
3661 | gfc_syntax_error (ST_IMPLICIT); | |
3662 | ||
3663 | error: | |
3664 | return MATCH_ERROR; | |
3665 | } | |
3666 | ||
f6d0e37a | 3667 | |
d67fc9ae | 3668 | match |
3669 | gfc_match_import (void) | |
3670 | { | |
3671 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
3672 | match m; | |
3673 | gfc_symbol *sym; | |
3674 | gfc_symtree *st; | |
3675 | ||
f6d0e37a | 3676 | if (gfc_current_ns->proc_name == NULL |
3677 | || gfc_current_ns->proc_name->attr.if_source != IFSRC_IFBODY) | |
d67fc9ae | 3678 | { |
3679 | gfc_error ("IMPORT statement at %C only permitted in " | |
3680 | "an INTERFACE body"); | |
3681 | return MATCH_ERROR; | |
3682 | } | |
3683 | ||
4b8eb6ca | 3684 | if (gfc_current_ns->proc_name->attr.module_procedure) |
3685 | { | |
3686 | gfc_error ("F2008: C1210 IMPORT statement at %C is not permitted " | |
3687 | "in a module procedure interface body"); | |
3688 | return MATCH_ERROR; | |
3689 | } | |
3690 | ||
60e19868 | 3691 | if (!gfc_notify_std (GFC_STD_F2003, "IMPORT statement at %C")) |
d67fc9ae | 3692 | return MATCH_ERROR; |
3693 | ||
3694 | if (gfc_match_eos () == MATCH_YES) | |
3695 | { | |
3696 | /* All host variables should be imported. */ | |
3697 | gfc_current_ns->has_import_set = 1; | |
3698 | return MATCH_YES; | |
3699 | } | |
3700 | ||
3701 | if (gfc_match (" ::") == MATCH_YES) | |
3702 | { | |
3703 | if (gfc_match_eos () == MATCH_YES) | |
1a9745d2 | 3704 | { |
3705 | gfc_error ("Expecting list of named entities at %C"); | |
3706 | return MATCH_ERROR; | |
3707 | } | |
d67fc9ae | 3708 | } |
3709 | ||
3710 | for(;;) | |
3711 | { | |
495e197c | 3712 | sym = NULL; |
d67fc9ae | 3713 | m = gfc_match (" %n", name); |
3714 | switch (m) | |
3715 | { | |
3716 | case MATCH_YES: | |
096d4ad9 | 3717 | if (gfc_current_ns->parent != NULL |
f6d0e37a | 3718 | && gfc_find_symbol (name, gfc_current_ns->parent, 1, &sym)) |
096d4ad9 | 3719 | { |
716da296 | 3720 | gfc_error ("Type name %qs at %C is ambiguous", name); |
096d4ad9 | 3721 | return MATCH_ERROR; |
3722 | } | |
6b010511 | 3723 | else if (!sym && gfc_current_ns->proc_name->ns->parent != NULL |
f6d0e37a | 3724 | && gfc_find_symbol (name, |
3725 | gfc_current_ns->proc_name->ns->parent, | |
3726 | 1, &sym)) | |
1a9745d2 | 3727 | { |
716da296 | 3728 | gfc_error ("Type name %qs at %C is ambiguous", name); |
1a9745d2 | 3729 | return MATCH_ERROR; |
3730 | } | |
3731 | ||
3732 | if (sym == NULL) | |
3733 | { | |
716da296 | 3734 | gfc_error ("Cannot IMPORT %qs from host scoping unit " |
1a9745d2 | 3735 | "at %C - does not exist.", name); |
3736 | return MATCH_ERROR; | |
3737 | } | |
3738 | ||
d67dd34f | 3739 | if (gfc_find_symtree (gfc_current_ns->sym_root, name)) |
1a9745d2 | 3740 | { |
6f521718 | 3741 | gfc_warning (0, "%qs is already IMPORTed from host scoping unit " |
4166acc7 | 3742 | "at %C", name); |
1a9745d2 | 3743 | goto next_item; |
3744 | } | |
3745 | ||
d67dd34f | 3746 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); |
1a9745d2 | 3747 | st->n.sym = sym; |
3748 | sym->refs++; | |
c723595c | 3749 | sym->attr.imported = 1; |
d67fc9ae | 3750 | |
c2958b6b | 3751 | if (sym->attr.generic && (sym = gfc_find_dt_in_generic (sym))) |
3752 | { | |
3753 | /* The actual derived type is stored in a symtree with the first | |
df084314 | 3754 | letter of the name capitalized; the symtree with the all |
293d72e0 | 3755 | lower-case name contains the associated generic function. */ |
c2958b6b | 3756 | st = gfc_new_symtree (&gfc_current_ns->sym_root, |
d7cd448a | 3757 | gfc_dt_upper_string (name)); |
c2958b6b | 3758 | st->n.sym = sym; |
3759 | sym->refs++; | |
3760 | sym->attr.imported = 1; | |
3761 | } | |
3762 | ||
d67fc9ae | 3763 | goto next_item; |
3764 | ||
3765 | case MATCH_NO: | |
3766 | break; | |
3767 | ||
3768 | case MATCH_ERROR: | |
3769 | return MATCH_ERROR; | |
3770 | } | |
3771 | ||
3772 | next_item: | |
3773 | if (gfc_match_eos () == MATCH_YES) | |
3774 | break; | |
3775 | if (gfc_match_char (',') != MATCH_YES) | |
3776 | goto syntax; | |
3777 | } | |
3778 | ||
3779 | return MATCH_YES; | |
3780 | ||
3781 | syntax: | |
3782 | gfc_error ("Syntax error in IMPORT statement at %C"); | |
3783 | return MATCH_ERROR; | |
3784 | } | |
39351103 | 3785 | |
f6d0e37a | 3786 | |
c72e5f7e | 3787 | /* A minimal implementation of gfc_match without whitespace, escape |
3788 | characters or variable arguments. Returns true if the next | |
3789 | characters match the TARGET template exactly. */ | |
3790 | ||
3791 | static bool | |
3792 | match_string_p (const char *target) | |
3793 | { | |
3794 | const char *p; | |
3795 | ||
3796 | for (p = target; *p; p++) | |
e0be6f02 | 3797 | if ((char) gfc_next_ascii_char () != *p) |
c72e5f7e | 3798 | return false; |
3799 | return true; | |
3800 | } | |
3801 | ||
4ee9c684 | 3802 | /* Matches an attribute specification including array specs. If |
3803 | successful, leaves the variables current_attr and current_as | |
3804 | holding the specification. Also sets the colon_seen variable for | |
3805 | later use by matchers associated with initializations. | |
3806 | ||
3807 | This subroutine is a little tricky in the sense that we don't know | |
3808 | if we really have an attr-spec until we hit the double colon. | |
3809 | Until that time, we can only return MATCH_NO. This forces us to | |
3810 | check for duplicate specification at this level. */ | |
3811 | ||
3812 | static match | |
3813 | match_attr_spec (void) | |
3814 | { | |
4ee9c684 | 3815 | /* Modifiers that can exist in a type statement. */ |
d55c3689 | 3816 | enum |
4ee9c684 | 3817 | { GFC_DECL_BEGIN = 0, |
3818 | DECL_ALLOCATABLE = GFC_DECL_BEGIN, DECL_DIMENSION, DECL_EXTERNAL, | |
3819 | DECL_IN, DECL_OUT, DECL_INOUT, DECL_INTRINSIC, DECL_OPTIONAL, | |
3ea52af3 | 3820 | DECL_PARAMETER, DECL_POINTER, DECL_PROTECTED, DECL_PRIVATE, |
8e652fcf | 3821 | DECL_STATIC, DECL_AUTOMATIC, |
3ea52af3 | 3822 | DECL_PUBLIC, DECL_SAVE, DECL_TARGET, DECL_VALUE, DECL_VOLATILE, |
b3c3927c | 3823 | DECL_IS_BIND_C, DECL_CODIMENSION, DECL_ASYNCHRONOUS, DECL_CONTIGUOUS, |
3824 | DECL_NONE, GFC_DECL_END /* Sentinel */ | |
d55c3689 | 3825 | }; |
4ee9c684 | 3826 | |
3827 | /* GFC_DECL_END is the sentinel, index starts at 0. */ | |
3828 | #define NUM_DECL GFC_DECL_END | |
3829 | ||
4ee9c684 | 3830 | locus start, seen_at[NUM_DECL]; |
3831 | int seen[NUM_DECL]; | |
9f1b7d17 | 3832 | unsigned int d; |
4ee9c684 | 3833 | const char *attr; |
3834 | match m; | |
60e19868 | 3835 | bool t; |
4ee9c684 | 3836 | |
3837 | gfc_clear_attr (¤t_attr); | |
cbb9e6aa | 3838 | start = gfc_current_locus; |
4ee9c684 | 3839 | |
3840 | current_as = NULL; | |
3841 | colon_seen = 0; | |
3842 | ||
3843 | /* See if we get all of the keywords up to the final double colon. */ | |
3844 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3845 | seen[d] = 0; | |
3846 | ||
3847 | for (;;) | |
3848 | { | |
e0be6f02 | 3849 | char ch; |
c5d33754 | 3850 | |
c72e5f7e | 3851 | d = DECL_NONE; |
3852 | gfc_gobble_whitespace (); | |
3853 | ||
e0be6f02 | 3854 | ch = gfc_next_ascii_char (); |
c72e5f7e | 3855 | if (ch == ':') |
3856 | { | |
3857 | /* This is the successful exit condition for the loop. */ | |
e0be6f02 | 3858 | if (gfc_next_ascii_char () == ':') |
c72e5f7e | 3859 | break; |
3860 | } | |
3861 | else if (ch == ',') | |
c5d33754 | 3862 | { |
c5d33754 | 3863 | gfc_gobble_whitespace (); |
e0be6f02 | 3864 | switch (gfc_peek_ascii_char ()) |
c5d33754 | 3865 | { |
c72e5f7e | 3866 | case 'a': |
738928be | 3867 | gfc_next_ascii_char (); |
3868 | switch (gfc_next_ascii_char ()) | |
3869 | { | |
3870 | case 'l': | |
3871 | if (match_string_p ("locatable")) | |
3872 | { | |
3873 | /* Matched "allocatable". */ | |
3874 | d = DECL_ALLOCATABLE; | |
3875 | } | |
3876 | break; | |
3877 | ||
3878 | case 's': | |
3879 | if (match_string_p ("ynchronous")) | |
3880 | { | |
3881 | /* Matched "asynchronous". */ | |
3882 | d = DECL_ASYNCHRONOUS; | |
3883 | } | |
3884 | break; | |
8e652fcf | 3885 | |
3886 | case 'u': | |
3887 | if (match_string_p ("tomatic")) | |
3888 | { | |
3889 | /* Matched "automatic". */ | |
3890 | d = DECL_AUTOMATIC; | |
3891 | } | |
3892 | break; | |
738928be | 3893 | } |
b3c3927c | 3894 | break; |
c72e5f7e | 3895 | |
3896 | case 'b': | |
c5d33754 | 3897 | /* Try and match the bind(c). */ |
75ae7f6c | 3898 | m = gfc_match_bind_c (NULL, true); |
5cf92482 | 3899 | if (m == MATCH_YES) |
c5d33754 | 3900 | d = DECL_IS_BIND_C; |
5cf92482 | 3901 | else if (m == MATCH_ERROR) |
3902 | goto cleanup; | |
c72e5f7e | 3903 | break; |
3904 | ||
aff518b0 | 3905 | case 'c': |
b3c3927c | 3906 | gfc_next_ascii_char (); |
3907 | if ('o' != gfc_next_ascii_char ()) | |
3908 | break; | |
3909 | switch (gfc_next_ascii_char ()) | |
3910 | { | |
3911 | case 'd': | |
3912 | if (match_string_p ("imension")) | |
3913 | { | |
3914 | d = DECL_CODIMENSION; | |
3915 | break; | |
3916 | } | |
e3533433 | 3917 | /* FALLTHRU */ |
b3c3927c | 3918 | case 'n': |
3919 | if (match_string_p ("tiguous")) | |
3920 | { | |
3921 | d = DECL_CONTIGUOUS; | |
3922 | break; | |
3923 | } | |
3924 | } | |
aff518b0 | 3925 | break; |
3926 | ||
c72e5f7e | 3927 | case 'd': |
3928 | if (match_string_p ("dimension")) | |
3929 | d = DECL_DIMENSION; | |
3930 | break; | |
3931 | ||
3932 | case 'e': | |
3933 | if (match_string_p ("external")) | |
3934 | d = DECL_EXTERNAL; | |
3935 | break; | |
3936 | ||
3937 | case 'i': | |
3938 | if (match_string_p ("int")) | |
3939 | { | |
e0be6f02 | 3940 | ch = gfc_next_ascii_char (); |
c72e5f7e | 3941 | if (ch == 'e') |
3942 | { | |
3943 | if (match_string_p ("nt")) | |
3944 | { | |
3945 | /* Matched "intent". */ | |
3946 | /* TODO: Call match_intent_spec from here. */ | |
3947 | if (gfc_match (" ( in out )") == MATCH_YES) | |
3948 | d = DECL_INOUT; | |
3949 | else if (gfc_match (" ( in )") == MATCH_YES) | |
3950 | d = DECL_IN; | |
3951 | else if (gfc_match (" ( out )") == MATCH_YES) | |
3952 | d = DECL_OUT; | |
3953 | } | |
3954 | } | |
3955 | else if (ch == 'r') | |
3956 | { | |
3957 | if (match_string_p ("insic")) | |
3958 | { | |
3959 | /* Matched "intrinsic". */ | |
3960 | d = DECL_INTRINSIC; | |
3961 | } | |
3962 | } | |
3963 | } | |
3964 | break; | |
3965 | ||
3966 | case 'o': | |
3967 | if (match_string_p ("optional")) | |
3968 | d = DECL_OPTIONAL; | |
3969 | break; | |
3970 | ||
3971 | case 'p': | |
e0be6f02 | 3972 | gfc_next_ascii_char (); |
3973 | switch (gfc_next_ascii_char ()) | |
c72e5f7e | 3974 | { |
3975 | case 'a': | |
3976 | if (match_string_p ("rameter")) | |
3977 | { | |
3978 | /* Matched "parameter". */ | |
3979 | d = DECL_PARAMETER; | |
3980 | } | |
3981 | break; | |
3982 | ||
3983 | case 'o': | |
3984 | if (match_string_p ("inter")) | |
3985 | { | |
3986 | /* Matched "pointer". */ | |
3987 | d = DECL_POINTER; | |
3988 | } | |
3989 | break; | |
3990 | ||
3991 | case 'r': | |
e0be6f02 | 3992 | ch = gfc_next_ascii_char (); |
c72e5f7e | 3993 | if (ch == 'i') |
3994 | { | |
3995 | if (match_string_p ("vate")) | |
3996 | { | |
3997 | /* Matched "private". */ | |
3998 | d = DECL_PRIVATE; | |
3999 | } | |
4000 | } | |
4001 | else if (ch == 'o') | |
4002 | { | |
4003 | if (match_string_p ("tected")) | |
4004 | { | |
4005 | /* Matched "protected". */ | |
4006 | d = DECL_PROTECTED; | |
4007 | } | |
4008 | } | |
4009 | break; | |
4010 | ||
4011 | case 'u': | |
4012 | if (match_string_p ("blic")) | |
4013 | { | |
4014 | /* Matched "public". */ | |
4015 | d = DECL_PUBLIC; | |
4016 | } | |
4017 | break; | |
4018 | } | |
4019 | break; | |
4020 | ||
4021 | case 's': | |
8e652fcf | 4022 | gfc_next_ascii_char (); |
4023 | switch (gfc_next_ascii_char ()) | |
4024 | { | |
4025 | case 'a': | |
4026 | if (match_string_p ("ve")) | |
4027 | { | |
4028 | /* Matched "save". */ | |
4029 | d = DECL_SAVE; | |
4030 | } | |
4031 | break; | |
4032 | ||
4033 | case 't': | |
4034 | if (match_string_p ("atic")) | |
4035 | { | |
4036 | /* Matched "static". */ | |
4037 | d = DECL_STATIC; | |
4038 | } | |
4039 | break; | |
4040 | } | |
c72e5f7e | 4041 | break; |
4042 | ||
4043 | case 't': | |
4044 | if (match_string_p ("target")) | |
4045 | d = DECL_TARGET; | |
4046 | break; | |
4047 | ||
4048 | case 'v': | |
e0be6f02 | 4049 | gfc_next_ascii_char (); |
4050 | ch = gfc_next_ascii_char (); | |
c72e5f7e | 4051 | if (ch == 'a') |
4052 | { | |
4053 | if (match_string_p ("lue")) | |
4054 | { | |
4055 | /* Matched "value". */ | |
4056 | d = DECL_VALUE; | |
4057 | } | |
4058 | } | |
4059 | else if (ch == 'o') | |
4060 | { | |
4061 | if (match_string_p ("latile")) | |
4062 | { | |
4063 | /* Matched "volatile". */ | |
4064 | d = DECL_VOLATILE; | |
4065 | } | |
4066 | } | |
4067 | break; | |
c5d33754 | 4068 | } |
4069 | } | |
f3f9b222 | 4070 | |
c72e5f7e | 4071 | /* No double colon and no recognizable decl_type, so assume that |
4072 | we've been looking at something else the whole time. */ | |
4073 | if (d == DECL_NONE) | |
4074 | { | |
4075 | m = MATCH_NO; | |
4076 | goto cleanup; | |
4077 | } | |
e14bee04 | 4078 | |
7e221851 | 4079 | /* Check to make sure any parens are paired up correctly. */ |
4080 | if (gfc_match_parens () == MATCH_ERROR) | |
4081 | { | |
4082 | m = MATCH_ERROR; | |
4083 | goto cleanup; | |
4084 | } | |
4085 | ||
4ee9c684 | 4086 | seen[d]++; |
cbb9e6aa | 4087 | seen_at[d] = gfc_current_locus; |
4ee9c684 | 4088 | |
e97ac7c0 | 4089 | if (d == DECL_DIMENSION || d == DECL_CODIMENSION) |
4ee9c684 | 4090 | { |
e97ac7c0 | 4091 | gfc_array_spec *as = NULL; |
4ee9c684 | 4092 | |
e97ac7c0 | 4093 | m = gfc_match_array_spec (&as, d == DECL_DIMENSION, |
4094 | d == DECL_CODIMENSION); | |
4095 | ||
4096 | if (current_as == NULL) | |
4097 | current_as = as; | |
4098 | else if (m == MATCH_YES) | |
4ee9c684 | 4099 | { |
60e19868 | 4100 | if (!merge_array_spec (as, current_as, false)) |
9b58b4c7 | 4101 | m = MATCH_ERROR; |
434f0922 | 4102 | free (as); |
4ee9c684 | 4103 | } |
4104 | ||
aff518b0 | 4105 | if (m == MATCH_NO) |
4106 | { | |
e97ac7c0 | 4107 | if (d == DECL_CODIMENSION) |
4108 | gfc_error ("Missing codimension specification at %C"); | |
4109 | else | |
4110 | gfc_error ("Missing dimension specification at %C"); | |
aff518b0 | 4111 | m = MATCH_ERROR; |
4112 | } | |
4113 | ||
4114 | if (m == MATCH_ERROR) | |
4115 | goto cleanup; | |
4116 | } | |
4ee9c684 | 4117 | } |
4118 | ||
4ee9c684 | 4119 | /* Since we've seen a double colon, we have to be looking at an |
4120 | attr-spec. This means that we can now issue errors. */ | |
4121 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
4122 | if (seen[d] > 1) | |
4123 | { | |
4124 | switch (d) | |
4125 | { | |
4126 | case DECL_ALLOCATABLE: | |
4127 | attr = "ALLOCATABLE"; | |
4128 | break; | |
738928be | 4129 | case DECL_ASYNCHRONOUS: |
4130 | attr = "ASYNCHRONOUS"; | |
4131 | break; | |
aff518b0 | 4132 | case DECL_CODIMENSION: |
4133 | attr = "CODIMENSION"; | |
4134 | break; | |
b3c3927c | 4135 | case DECL_CONTIGUOUS: |
4136 | attr = "CONTIGUOUS"; | |
4137 | break; | |
4ee9c684 | 4138 | case DECL_DIMENSION: |
4139 | attr = "DIMENSION"; | |
4140 | break; | |
4141 | case DECL_EXTERNAL: | |
4142 | attr = "EXTERNAL"; | |
4143 | break; | |
4144 | case DECL_IN: | |
4145 | attr = "INTENT (IN)"; | |
4146 | break; | |
4147 | case DECL_OUT: | |
4148 | attr = "INTENT (OUT)"; | |
4149 | break; | |
4150 | case DECL_INOUT: | |
4151 | attr = "INTENT (IN OUT)"; | |
4152 | break; | |
4153 | case DECL_INTRINSIC: | |
4154 | attr = "INTRINSIC"; | |
4155 | break; | |
4156 | case DECL_OPTIONAL: | |
4157 | attr = "OPTIONAL"; | |
4158 | break; | |
4159 | case DECL_PARAMETER: | |
4160 | attr = "PARAMETER"; | |
4161 | break; | |
4162 | case DECL_POINTER: | |
4163 | attr = "POINTER"; | |
4164 | break; | |
3ea52af3 | 4165 | case DECL_PROTECTED: |
4166 | attr = "PROTECTED"; | |
4167 | break; | |
4ee9c684 | 4168 | case DECL_PRIVATE: |
4169 | attr = "PRIVATE"; | |
4170 | break; | |
4171 | case DECL_PUBLIC: | |
4172 | attr = "PUBLIC"; | |
4173 | break; | |
4174 | case DECL_SAVE: | |
4175 | attr = "SAVE"; | |
4176 | break; | |
8e652fcf | 4177 | case DECL_STATIC: |
4178 | attr = "STATIC"; | |
4179 | break; | |
4180 | case DECL_AUTOMATIC: | |
4181 | attr = "AUTOMATIC"; | |
4182 | break; | |
4ee9c684 | 4183 | case DECL_TARGET: |
4184 | attr = "TARGET"; | |
4185 | break; | |
c5d33754 | 4186 | case DECL_IS_BIND_C: |
4187 | attr = "IS_BIND_C"; | |
4188 | break; | |
4189 | case DECL_VALUE: | |
4190 | attr = "VALUE"; | |
4191 | break; | |
ef814c81 | 4192 | case DECL_VOLATILE: |
4193 | attr = "VOLATILE"; | |
4194 | break; | |
4ee9c684 | 4195 | default: |
f6d0e37a | 4196 | attr = NULL; /* This shouldn't happen. */ |
4ee9c684 | 4197 | } |
4198 | ||
4199 | gfc_error ("Duplicate %s attribute at %L", attr, &seen_at[d]); | |
4200 | m = MATCH_ERROR; | |
4201 | goto cleanup; | |
4202 | } | |
4203 | ||
4204 | /* Now that we've dealt with duplicate attributes, add the attributes | |
4205 | to the current attribute. */ | |
4206 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
4207 | { | |
4208 | if (seen[d] == 0) | |
4209 | continue; | |
4210 | ||
8e652fcf | 4211 | if ((d == DECL_STATIC || d == DECL_AUTOMATIC) |
4212 | && !flag_dec_static) | |
4213 | { | |
4214 | gfc_error ("%s at %L is a DEC extension, enable with -fdec-static", | |
4215 | d == DECL_STATIC ? "STATIC" : "AUTOMATIC", &seen_at[d]); | |
4216 | m = MATCH_ERROR; | |
4217 | goto cleanup; | |
4218 | } | |
4219 | /* Allow SAVE with STATIC, but don't complain. */ | |
4220 | if (d == DECL_STATIC && seen[DECL_SAVE]) | |
4221 | continue; | |
4222 | ||
4ee9c684 | 4223 | if (gfc_current_state () == COMP_DERIVED |
aff518b0 | 4224 | && d != DECL_DIMENSION && d != DECL_CODIMENSION |
4225 | && d != DECL_POINTER && d != DECL_PRIVATE | |
b3c3927c | 4226 | && d != DECL_PUBLIC && d != DECL_CONTIGUOUS && d != DECL_NONE) |
4ee9c684 | 4227 | { |
2294b616 | 4228 | if (d == DECL_ALLOCATABLE) |
4229 | { | |
60e19868 | 4230 | if (!gfc_notify_std (GFC_STD_F2003, "ALLOCATABLE " |
4231 | "attribute at %C in a TYPE definition")) | |
2294b616 | 4232 | { |
4233 | m = MATCH_ERROR; | |
4234 | goto cleanup; | |
4235 | } | |
1a9745d2 | 4236 | } |
4237 | else | |
2294b616 | 4238 | { |
4239 | gfc_error ("Attribute at %L is not allowed in a TYPE definition", | |
e14bee04 | 4240 | &seen_at[d]); |
2294b616 | 4241 | m = MATCH_ERROR; |
4242 | goto cleanup; | |
4243 | } | |
4ee9c684 | 4244 | } |
4245 | ||
ea13b9b7 | 4246 | if ((d == DECL_PRIVATE || d == DECL_PUBLIC) |
1a9745d2 | 4247 | && gfc_current_state () != COMP_MODULE) |
ea13b9b7 | 4248 | { |
4249 | if (d == DECL_PRIVATE) | |
4250 | attr = "PRIVATE"; | |
4251 | else | |
4252 | attr = "PUBLIC"; | |
e14bee04 | 4253 | if (gfc_current_state () == COMP_DERIVED |
4254 | && gfc_state_stack->previous | |
4255 | && gfc_state_stack->previous->state == COMP_MODULE) | |
4256 | { | |
60e19868 | 4257 | if (!gfc_notify_std (GFC_STD_F2003, "Attribute %s " |
76e207a9 | 4258 | "at %L in a TYPE definition", attr, |
60e19868 | 4259 | &seen_at[d])) |
e14bee04 | 4260 | { |
4261 | m = MATCH_ERROR; | |
4262 | goto cleanup; | |
4263 | } | |
4264 | } | |
4265 | else | |
4266 | { | |
4267 | gfc_error ("%s attribute at %L is not allowed outside of the " | |
4268 | "specification part of a module", attr, &seen_at[d]); | |
4269 | m = MATCH_ERROR; | |
4270 | goto cleanup; | |
4271 | } | |
ea13b9b7 | 4272 | } |
4273 | ||
4ee9c684 | 4274 | switch (d) |
4275 | { | |
4276 | case DECL_ALLOCATABLE: | |
4277 | t = gfc_add_allocatable (¤t_attr, &seen_at[d]); | |
4278 | break; | |
4279 | ||
738928be | 4280 | case DECL_ASYNCHRONOUS: |
60e19868 | 4281 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS attribute at %C")) |
4282 | t = false; | |
738928be | 4283 | else |
4284 | t = gfc_add_asynchronous (¤t_attr, NULL, &seen_at[d]); | |
4285 | break; | |
4286 | ||
aff518b0 | 4287 | case DECL_CODIMENSION: |
4288 | t = gfc_add_codimension (¤t_attr, NULL, &seen_at[d]); | |
4289 | break; | |
4290 | ||
b3c3927c | 4291 | case DECL_CONTIGUOUS: |
60e19868 | 4292 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS attribute at %C")) |
4293 | t = false; | |
b3c3927c | 4294 | else |
4295 | t = gfc_add_contiguous (¤t_attr, NULL, &seen_at[d]); | |
4296 | break; | |
4297 | ||
4ee9c684 | 4298 | case DECL_DIMENSION: |
950683ed | 4299 | t = gfc_add_dimension (¤t_attr, NULL, &seen_at[d]); |
4ee9c684 | 4300 | break; |
4301 | ||
4302 | case DECL_EXTERNAL: | |
4303 | t = gfc_add_external (¤t_attr, &seen_at[d]); | |
4304 | break; | |
4305 | ||
4306 | case DECL_IN: | |
4307 | t = gfc_add_intent (¤t_attr, INTENT_IN, &seen_at[d]); | |
4308 | break; | |
4309 | ||
4310 | case DECL_OUT: | |
4311 | t = gfc_add_intent (¤t_attr, INTENT_OUT, &seen_at[d]); | |
4312 | break; | |
4313 | ||
4314 | case DECL_INOUT: | |
4315 | t = gfc_add_intent (¤t_attr, INTENT_INOUT, &seen_at[d]); | |
4316 | break; | |
4317 | ||
4318 | case DECL_INTRINSIC: | |
4319 | t = gfc_add_intrinsic (¤t_attr, &seen_at[d]); | |
4320 | break; | |
4321 | ||
4322 | case DECL_OPTIONAL: | |
4323 | t = gfc_add_optional (¤t_attr, &seen_at[d]); | |
4324 | break; | |
4325 | ||
4326 | case DECL_PARAMETER: | |
950683ed | 4327 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, &seen_at[d]); |
4ee9c684 | 4328 | break; |
4329 | ||
4330 | case DECL_POINTER: | |
4331 | t = gfc_add_pointer (¤t_attr, &seen_at[d]); | |
4332 | break; | |
4333 | ||
3ea52af3 | 4334 | case DECL_PROTECTED: |
8371b2e9 | 4335 | if (gfc_current_state () != COMP_MODULE |
4336 | || (gfc_current_ns->proc_name | |
4337 | && gfc_current_ns->proc_name->attr.flavor != FL_MODULE)) | |
3ea52af3 | 4338 | { |
4339 | gfc_error ("PROTECTED at %C only allowed in specification " | |
4340 | "part of a module"); | |
60e19868 | 4341 | t = false; |
3ea52af3 | 4342 | break; |
4343 | } | |
4344 | ||
60e19868 | 4345 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED attribute at %C")) |
4346 | t = false; | |
3ea52af3 | 4347 | else |
4348 | t = gfc_add_protected (¤t_attr, NULL, &seen_at[d]); | |
4349 | break; | |
4350 | ||
4ee9c684 | 4351 | case DECL_PRIVATE: |
950683ed | 4352 | t = gfc_add_access (¤t_attr, ACCESS_PRIVATE, NULL, |
4353 | &seen_at[d]); | |
4ee9c684 | 4354 | break; |
4355 | ||
4356 | case DECL_PUBLIC: | |
950683ed | 4357 | t = gfc_add_access (¤t_attr, ACCESS_PUBLIC, NULL, |
4358 | &seen_at[d]); | |
4ee9c684 | 4359 | break; |
4360 | ||
8e652fcf | 4361 | case DECL_STATIC: |
4ee9c684 | 4362 | case DECL_SAVE: |
23d075f4 | 4363 | t = gfc_add_save (¤t_attr, SAVE_EXPLICIT, NULL, &seen_at[d]); |
4ee9c684 | 4364 | break; |
4365 | ||
8e652fcf | 4366 | case DECL_AUTOMATIC: |
4367 | t = gfc_add_automatic (¤t_attr, NULL, &seen_at[d]); | |
4368 | break; | |
4369 | ||
4ee9c684 | 4370 | case DECL_TARGET: |
4371 | t = gfc_add_target (¤t_attr, &seen_at[d]); | |
4372 | break; | |
4373 | ||
c5d33754 | 4374 | case DECL_IS_BIND_C: |
4375 | t = gfc_add_is_bind_c(¤t_attr, NULL, &seen_at[d], 0); | |
4376 | break; | |
8db94b3b | 4377 | |
8f6339b6 | 4378 | case DECL_VALUE: |
60e19868 | 4379 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE attribute at %C")) |
4380 | t = false; | |
8f6339b6 | 4381 | else |
4382 | t = gfc_add_value (¤t_attr, NULL, &seen_at[d]); | |
4383 | break; | |
4384 | ||
ef814c81 | 4385 | case DECL_VOLATILE: |
60e19868 | 4386 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE attribute at %C")) |
4387 | t = false; | |
ef814c81 | 4388 | else |
4389 | t = gfc_add_volatile (¤t_attr, NULL, &seen_at[d]); | |
4390 | break; | |
4391 | ||
4ee9c684 | 4392 | default: |
4393 | gfc_internal_error ("match_attr_spec(): Bad attribute"); | |
4394 | } | |
4395 | ||
60e19868 | 4396 | if (!t) |
4ee9c684 | 4397 | { |
4398 | m = MATCH_ERROR; | |
4399 | goto cleanup; | |
4400 | } | |
4401 | } | |
4402 | ||
c25834c9 | 4403 | /* Since Fortran 2008 module variables implicitly have the SAVE attribute. */ |
4b8eb6ca | 4404 | if ((gfc_current_state () == COMP_MODULE |
4405 | || gfc_current_state () == COMP_SUBMODULE) | |
4406 | && !current_attr.save | |
c25834c9 | 4407 | && (gfc_option.allow_std & GFC_STD_F2008) != 0) |
23d075f4 | 4408 | current_attr.save = SAVE_IMPLICIT; |
4409 | ||
4ee9c684 | 4410 | colon_seen = 1; |
4411 | return MATCH_YES; | |
4412 | ||
4413 | cleanup: | |
cbb9e6aa | 4414 | gfc_current_locus = start; |
4ee9c684 | 4415 | gfc_free_array_spec (current_as); |
4416 | current_as = NULL; | |
4417 | return m; | |
4418 | } | |
4419 | ||
4420 | ||
c5d33754 | 4421 | /* Set the binding label, dest_label, either with the binding label |
4422 | stored in the given gfc_typespec, ts, or if none was provided, it | |
4423 | will be the symbol name in all lower case, as required by the draft | |
4424 | (J3/04-007, section 15.4.1). If a binding label was given and | |
4425 | there is more than one argument (num_idents), it is an error. */ | |
4426 | ||
60e19868 | 4427 | static bool |
8db94b3b | 4428 | set_binding_label (const char **dest_label, const char *sym_name, |
1d8a57d8 | 4429 | int num_idents) |
c5d33754 | 4430 | { |
825718f9 | 4431 | if (num_idents > 1 && has_name_equals) |
c5d33754 | 4432 | { |
825718f9 | 4433 | gfc_error ("Multiple identifiers provided with " |
4434 | "single NAME= specifier at %C"); | |
60e19868 | 4435 | return false; |
825718f9 | 4436 | } |
c5d33754 | 4437 | |
7b2060ba | 4438 | if (curr_binding_label) |
df084314 | 4439 | /* Binding label given; store in temp holder till have sym. */ |
7b2060ba | 4440 | *dest_label = curr_binding_label; |
c5d33754 | 4441 | else |
4442 | { | |
4443 | /* No binding label given, and the NAME= specifier did not exist, | |
4444 | which means there was no NAME="". */ | |
4445 | if (sym_name != NULL && has_name_equals == 0) | |
7b2060ba | 4446 | *dest_label = IDENTIFIER_POINTER (get_identifier (sym_name)); |
c5d33754 | 4447 | } |
8db94b3b | 4448 | |
60e19868 | 4449 | return true; |
c5d33754 | 4450 | } |
4451 | ||
4452 | ||
4453 | /* Set the status of the given common block as being BIND(C) or not, | |
4454 | depending on the given parameter, is_bind_c. */ | |
4455 | ||
4456 | void | |
4457 | set_com_block_bind_c (gfc_common_head *com_block, int is_bind_c) | |
4458 | { | |
4459 | com_block->is_bind_c = is_bind_c; | |
4460 | return; | |
4461 | } | |
4462 | ||
4463 | ||
4464 | /* Verify that the given gfc_typespec is for a C interoperable type. */ | |
4465 | ||
60e19868 | 4466 | bool |
2564c57a | 4467 | gfc_verify_c_interop (gfc_typespec *ts) |
c5d33754 | 4468 | { |
eeebe20b | 4469 | if (ts->type == BT_DERIVED && ts->u.derived != NULL) |
5f9b1308 | 4470 | return (ts->u.derived->ts.is_c_interop || ts->u.derived->attr.is_bind_c) |
60e19868 | 4471 | ? true : false; |
2564c57a | 4472 | else if (ts->type == BT_CLASS) |
60e19868 | 4473 | return false; |
8c2d8d6d | 4474 | else if (ts->is_c_interop != 1 && ts->type != BT_ASSUMED) |
60e19868 | 4475 | return false; |
8c2d8d6d | 4476 | |
60e19868 | 4477 | return true; |
c5d33754 | 4478 | } |
4479 | ||
4480 | ||
4481 | /* Verify that the variables of a given common block, which has been | |
4482 | defined with the attribute specifier bind(c), to be of a C | |
4483 | interoperable type. Errors will be reported here, if | |
4484 | encountered. */ | |
4485 | ||
60e19868 | 4486 | bool |
c5d33754 | 4487 | verify_com_block_vars_c_interop (gfc_common_head *com_block) |
4488 | { | |
4489 | gfc_symbol *curr_sym = NULL; | |
60e19868 | 4490 | bool retval = true; |
c5d33754 | 4491 | |
4492 | curr_sym = com_block->head; | |
8db94b3b | 4493 | |
c5d33754 | 4494 | /* Make sure we have at least one symbol. */ |
4495 | if (curr_sym == NULL) | |
4496 | return retval; | |
4497 | ||
4498 | /* Here we know we have a symbol, so we'll execute this loop | |
4499 | at least once. */ | |
4500 | do | |
4501 | { | |
4502 | /* The second to last param, 1, says this is in a common block. */ | |
4503 | retval = verify_bind_c_sym (curr_sym, &(curr_sym->ts), 1, com_block); | |
4504 | curr_sym = curr_sym->common_next; | |
8db94b3b | 4505 | } while (curr_sym != NULL); |
c5d33754 | 4506 | |
4507 | return retval; | |
4508 | } | |
4509 | ||
4510 | ||
4511 | /* Verify that a given BIND(C) symbol is C interoperable. If it is not, | |
4512 | an appropriate error message is reported. */ | |
4513 | ||
60e19868 | 4514 | bool |
c5d33754 | 4515 | verify_bind_c_sym (gfc_symbol *tmp_sym, gfc_typespec *ts, |
4516 | int is_in_common, gfc_common_head *com_block) | |
4517 | { | |
1f2ab120 | 4518 | bool bind_c_function = false; |
60e19868 | 4519 | bool retval = true; |
4f7bb9ec | 4520 | |
1f2ab120 | 4521 | if (tmp_sym->attr.function && tmp_sym->attr.is_bind_c) |
4522 | bind_c_function = true; | |
4523 | ||
4f7bb9ec | 4524 | if (tmp_sym->attr.function && tmp_sym->result != NULL) |
4525 | { | |
4526 | tmp_sym = tmp_sym->result; | |
4527 | /* Make sure it wasn't an implicitly typed result. */ | |
bf79c656 | 4528 | if (tmp_sym->attr.implicit_type && warn_c_binding_type) |
4f7bb9ec | 4529 | { |
4166acc7 | 4530 | gfc_warning (OPT_Wc_binding_type, |
4531 | "Implicitly declared BIND(C) function %qs at " | |
4f7bb9ec | 4532 | "%L may not be C interoperable", tmp_sym->name, |
4533 | &tmp_sym->declared_at); | |
4534 | tmp_sym->ts.f90_type = tmp_sym->ts.type; | |
4535 | /* Mark it as C interoperable to prevent duplicate warnings. */ | |
4536 | tmp_sym->ts.is_c_interop = 1; | |
4537 | tmp_sym->attr.is_c_interop = 1; | |
4538 | } | |
4539 | } | |
1f2ab120 | 4540 | |
c5d33754 | 4541 | /* Here, we know we have the bind(c) attribute, so if we have |
4542 | enough type info, then verify that it's a C interop kind. | |
4543 | The info could be in the symbol already, or possibly still in | |
4544 | the given ts (current_ts), so look in both. */ | |
8db94b3b | 4545 | if (tmp_sym->ts.type != BT_UNKNOWN || ts->type != BT_UNKNOWN) |
c5d33754 | 4546 | { |
60e19868 | 4547 | if (!gfc_verify_c_interop (&(tmp_sym->ts))) |
c5d33754 | 4548 | { |
4549 | /* See if we're dealing with a sym in a common block or not. */ | |
bf79c656 | 4550 | if (is_in_common == 1 && warn_c_binding_type) |
c5d33754 | 4551 | { |
4166acc7 | 4552 | gfc_warning (OPT_Wc_binding_type, |
4553 | "Variable %qs in common block %qs at %L " | |
c5d33754 | 4554 | "may not be a C interoperable " |
4166acc7 | 4555 | "kind though common block %qs is BIND(C)", |
c5d33754 | 4556 | tmp_sym->name, com_block->name, |
4557 | &(tmp_sym->declared_at), com_block->name); | |
4558 | } | |
4559 | else | |
4560 | { | |
4561 | if (tmp_sym->ts.type == BT_DERIVED || ts->type == BT_DERIVED) | |
716da296 | 4562 | gfc_error ("Type declaration %qs at %L is not C " |
c5d33754 | 4563 | "interoperable but it is BIND(C)", |
4564 | tmp_sym->name, &(tmp_sym->declared_at)); | |
bf79c656 | 4565 | else if (warn_c_binding_type) |
4166acc7 | 4566 | gfc_warning (OPT_Wc_binding_type, "Variable %qs at %L " |
c5d33754 | 4567 | "may not be a C interoperable " |
716da296 | 4568 | "kind but it is BIND(C)", |
c5d33754 | 4569 | tmp_sym->name, &(tmp_sym->declared_at)); |
4570 | } | |
4571 | } | |
8db94b3b | 4572 | |
c5d33754 | 4573 | /* Variables declared w/in a common block can't be bind(c) |
4574 | since there's no way for C to see these variables, so there's | |
4575 | semantically no reason for the attribute. */ | |
4576 | if (is_in_common == 1 && tmp_sym->attr.is_bind_c == 1) | |
4577 | { | |
716da296 | 4578 | gfc_error ("Variable %qs in common block %qs at " |
c5d33754 | 4579 | "%L cannot be declared with BIND(C) " |
4580 | "since it is not a global", | |
4581 | tmp_sym->name, com_block->name, | |
4582 | &(tmp_sym->declared_at)); | |
60e19868 | 4583 | retval = false; |
c5d33754 | 4584 | } |
8db94b3b | 4585 | |
c5d33754 | 4586 | /* Scalar variables that are bind(c) can not have the pointer |
4587 | or allocatable attributes. */ | |
4588 | if (tmp_sym->attr.is_bind_c == 1) | |
4589 | { | |
4590 | if (tmp_sym->attr.pointer == 1) | |
4591 | { | |
716da296 | 4592 | gfc_error ("Variable %qs at %L cannot have both the " |
c5d33754 | 4593 | "POINTER and BIND(C) attributes", |
4594 | tmp_sym->name, &(tmp_sym->declared_at)); | |
60e19868 | 4595 | retval = false; |
c5d33754 | 4596 | } |
4597 | ||
4598 | if (tmp_sym->attr.allocatable == 1) | |
4599 | { | |
716da296 | 4600 | gfc_error ("Variable %qs at %L cannot have both the " |
c5d33754 | 4601 | "ALLOCATABLE and BIND(C) attributes", |
4602 | tmp_sym->name, &(tmp_sym->declared_at)); | |
60e19868 | 4603 | retval = false; |
c5d33754 | 4604 | } |
4605 | ||
1f2ab120 | 4606 | } |
4607 | ||
4608 | /* If it is a BIND(C) function, make sure the return value is a | |
4609 | scalar value. The previous tests in this function made sure | |
4610 | the type is interoperable. */ | |
4611 | if (bind_c_function && tmp_sym->as != NULL) | |
716da296 | 4612 | gfc_error ("Return type of BIND(C) function %qs at %L cannot " |
1f2ab120 | 4613 | "be an array", tmp_sym->name, &(tmp_sym->declared_at)); |
4614 | ||
4615 | /* BIND(C) functions can not return a character string. */ | |
4616 | if (bind_c_function && tmp_sym->ts.type == BT_CHARACTER) | |
eeebe20b | 4617 | if (tmp_sym->ts.u.cl == NULL || tmp_sym->ts.u.cl->length == NULL |
4618 | || tmp_sym->ts.u.cl->length->expr_type != EXPR_CONSTANT | |
4619 | || mpz_cmp_si (tmp_sym->ts.u.cl->length->value.integer, 1) != 0) | |
716da296 | 4620 | gfc_error ("Return type of BIND(C) function %qs at %L cannot " |
c5d33754 | 4621 | "be a character string", tmp_sym->name, |
4622 | &(tmp_sym->declared_at)); | |
c5d33754 | 4623 | } |
4624 | ||
4625 | /* See if the symbol has been marked as private. If it has, make sure | |
4626 | there is no binding label and warn the user if there is one. */ | |
4627 | if (tmp_sym->attr.access == ACCESS_PRIVATE | |
7b2060ba | 4628 | && tmp_sym->binding_label) |
c5d33754 | 4629 | /* Use gfc_warning_now because we won't say that the symbol fails |
4630 | just because of this. */ | |
6f521718 | 4631 | gfc_warning_now (0, "Symbol %qs at %L is marked PRIVATE but has been " |
bf79c656 | 4632 | "given the binding label %qs", tmp_sym->name, |
c5d33754 | 4633 | &(tmp_sym->declared_at), tmp_sym->binding_label); |
4634 | ||
4635 | return retval; | |
4636 | } | |
4637 | ||
4638 | ||
4639 | /* Set the appropriate fields for a symbol that's been declared as | |
4640 | BIND(C) (the is_bind_c flag and the binding label), and verify that | |
4641 | the type is C interoperable. Errors are reported by the functions | |
4642 | used to set/test these fields. */ | |
4643 | ||
60e19868 | 4644 | bool |
c5d33754 | 4645 | set_verify_bind_c_sym (gfc_symbol *tmp_sym, int num_idents) |
4646 | { | |
60e19868 | 4647 | bool retval = true; |
8db94b3b | 4648 | |
c5d33754 | 4649 | /* TODO: Do we need to make sure the vars aren't marked private? */ |
4650 | ||
4651 | /* Set the is_bind_c bit in symbol_attribute. */ | |
4652 | gfc_add_is_bind_c (&(tmp_sym->attr), tmp_sym->name, &gfc_current_locus, 0); | |
4653 | ||
60e19868 | 4654 | if (!set_binding_label (&tmp_sym->binding_label, tmp_sym->name, num_idents)) |
4655 | return false; | |
c5d33754 | 4656 | |
4657 | return retval; | |
4658 | } | |
4659 | ||
4660 | ||
4661 | /* Set the fields marking the given common block as BIND(C), including | |
4662 | a binding label, and report any errors encountered. */ | |
4663 | ||
60e19868 | 4664 | bool |
c5d33754 | 4665 | set_verify_bind_c_com_block (gfc_common_head *com_block, int num_idents) |
4666 | { | |
60e19868 | 4667 | bool retval = true; |
8db94b3b | 4668 | |
c5d33754 | 4669 | /* destLabel, common name, typespec (which may have binding label). */ |
76e207a9 | 4670 | if (!set_binding_label (&com_block->binding_label, com_block->name, |
60e19868 | 4671 | num_idents)) |
4672 | return false; | |
c5d33754 | 4673 | |
4674 | /* Set the given common block (com_block) to being bind(c) (1). */ | |
4675 | set_com_block_bind_c (com_block, 1); | |
4676 | ||
4677 | return retval; | |
4678 | } | |
4679 | ||
4680 | ||
4681 | /* Retrieve the list of one or more identifiers that the given bind(c) | |
4682 | attribute applies to. */ | |
4683 | ||
60e19868 | 4684 | bool |
c5d33754 | 4685 | get_bind_c_idents (void) |
4686 | { | |
4687 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4688 | int num_idents = 0; | |
4689 | gfc_symbol *tmp_sym = NULL; | |
4690 | match found_id; | |
4691 | gfc_common_head *com_block = NULL; | |
8db94b3b | 4692 | |
c5d33754 | 4693 | if (gfc_match_name (name) == MATCH_YES) |
4694 | { | |
4695 | found_id = MATCH_YES; | |
4696 | gfc_get_ha_symbol (name, &tmp_sym); | |
4697 | } | |
4698 | else if (match_common_name (name) == MATCH_YES) | |
4699 | { | |
4700 | found_id = MATCH_YES; | |
4701 | com_block = gfc_get_common (name, 0); | |
4702 | } | |
4703 | else | |
4704 | { | |
4705 | gfc_error ("Need either entity or common block name for " | |
4706 | "attribute specification statement at %C"); | |
60e19868 | 4707 | return false; |
c5d33754 | 4708 | } |
8db94b3b | 4709 | |
c5d33754 | 4710 | /* Save the current identifier and look for more. */ |
4711 | do | |
4712 | { | |
4713 | /* Increment the number of identifiers found for this spec stmt. */ | |
4714 | num_idents++; | |
4715 | ||
4716 | /* Make sure we have a sym or com block, and verify that it can | |
4717 | be bind(c). Set the appropriate field(s) and look for more | |
4718 | identifiers. */ | |
8db94b3b | 4719 | if (tmp_sym != NULL || com_block != NULL) |
c5d33754 | 4720 | { |
4721 | if (tmp_sym != NULL) | |
4722 | { | |
60e19868 | 4723 | if (!set_verify_bind_c_sym (tmp_sym, num_idents)) |
4724 | return false; | |
c5d33754 | 4725 | } |
4726 | else | |
4727 | { | |
60e19868 | 4728 | if (!set_verify_bind_c_com_block (com_block, num_idents)) |
4729 | return false; | |
c5d33754 | 4730 | } |
8db94b3b | 4731 | |
c5d33754 | 4732 | /* Look to see if we have another identifier. */ |
4733 | tmp_sym = NULL; | |
4734 | if (gfc_match_eos () == MATCH_YES) | |
4735 | found_id = MATCH_NO; | |
4736 | else if (gfc_match_char (',') != MATCH_YES) | |
4737 | found_id = MATCH_NO; | |
4738 | else if (gfc_match_name (name) == MATCH_YES) | |
4739 | { | |
4740 | found_id = MATCH_YES; | |
4741 | gfc_get_ha_symbol (name, &tmp_sym); | |
4742 | } | |
4743 | else if (match_common_name (name) == MATCH_YES) | |
4744 | { | |
4745 | found_id = MATCH_YES; | |
4746 | com_block = gfc_get_common (name, 0); | |
4747 | } | |
4748 | else | |
4749 | { | |
4750 | gfc_error ("Missing entity or common block name for " | |
4751 | "attribute specification statement at %C"); | |
60e19868 | 4752 | return false; |
c5d33754 | 4753 | } |
4754 | } | |
4755 | else | |
4756 | { | |
4757 | gfc_internal_error ("Missing symbol"); | |
4758 | } | |
4759 | } while (found_id == MATCH_YES); | |
4760 | ||
4761 | /* if we get here we were successful */ | |
60e19868 | 4762 | return true; |
c5d33754 | 4763 | } |
4764 | ||
4765 | ||
4766 | /* Try and match a BIND(C) attribute specification statement. */ | |
8db94b3b | 4767 | |
c5d33754 | 4768 | match |
4769 | gfc_match_bind_c_stmt (void) | |
4770 | { | |
4771 | match found_match = MATCH_NO; | |
4772 | gfc_typespec *ts; | |
4773 | ||
4774 | ts = ¤t_ts; | |
8db94b3b | 4775 | |
c5d33754 | 4776 | /* This may not be necessary. */ |
4777 | gfc_clear_ts (ts); | |
4778 | /* Clear the temporary binding label holder. */ | |
7b2060ba | 4779 | curr_binding_label = NULL; |
c5d33754 | 4780 | |
4781 | /* Look for the bind(c). */ | |
75ae7f6c | 4782 | found_match = gfc_match_bind_c (NULL, true); |
c5d33754 | 4783 | |
4784 | if (found_match == MATCH_YES) | |
4785 | { | |
7a914593 | 4786 | if (!gfc_notify_std (GFC_STD_F2003, "BIND(C) statement at %C")) |
4787 | return MATCH_ERROR; | |
4788 | ||
c5d33754 | 4789 | /* Look for the :: now, but it is not required. */ |
4790 | gfc_match (" :: "); | |
4791 | ||
4792 | /* Get the identifier(s) that needs to be updated. This may need to | |
4793 | change to hand the flag(s) for the attr specified so all identifiers | |
4794 | found can have all appropriate parts updated (assuming that the same | |
4795 | spec stmt can have multiple attrs, such as both bind(c) and | |
4796 | allocatable...). */ | |
60e19868 | 4797 | if (!get_bind_c_idents ()) |
c5d33754 | 4798 | /* Error message should have printed already. */ |
4799 | return MATCH_ERROR; | |
4800 | } | |
4801 | ||
4802 | return found_match; | |
4803 | } | |
4804 | ||
4805 | ||
4ee9c684 | 4806 | /* Match a data declaration statement. */ |
4807 | ||
4808 | match | |
4809 | gfc_match_data_decl (void) | |
4810 | { | |
4811 | gfc_symbol *sym; | |
4812 | match m; | |
3923b69f | 4813 | int elem; |
4ee9c684 | 4814 | |
c5d33754 | 4815 | num_idents_on_line = 0; |
8db94b3b | 4816 | |
e8152f13 | 4817 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
4ee9c684 | 4818 | if (m != MATCH_YES) |
4819 | return m; | |
4820 | ||
b3704193 | 4821 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
d7cd448a | 4822 | && !gfc_comp_struct (gfc_current_state ())) |
4ee9c684 | 4823 | { |
eeebe20b | 4824 | sym = gfc_use_derived (current_ts.u.derived); |
4ee9c684 | 4825 | |
4826 | if (sym == NULL) | |
4827 | { | |
4828 | m = MATCH_ERROR; | |
4829 | goto cleanup; | |
4830 | } | |
4831 | ||
eeebe20b | 4832 | current_ts.u.derived = sym; |
4ee9c684 | 4833 | } |
4834 | ||
4835 | m = match_attr_spec (); | |
4836 | if (m == MATCH_ERROR) | |
4837 | { | |
4838 | m = MATCH_NO; | |
4839 | goto cleanup; | |
4840 | } | |
4841 | ||
a90fe829 | 4842 | if (current_ts.type == BT_CLASS |
4843 | && current_ts.u.derived->attr.unlimited_polymorphic) | |
4844 | goto ok; | |
4845 | ||
b3704193 | 4846 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
4847 | && current_ts.u.derived->components == NULL | |
eeebe20b | 4848 | && !current_ts.u.derived->attr.zero_comp) |
4ee9c684 | 4849 | { |
4850 | ||
d7cd448a | 4851 | if (current_attr.pointer && gfc_comp_struct (gfc_current_state ())) |
4ee9c684 | 4852 | goto ok; |
4853 | ||
dd7553fe | 4854 | if (current_attr.allocatable && gfc_current_state () == COMP_DERIVED |
4855 | && current_ts.u.derived == gfc_current_block ()) | |
4856 | goto ok; | |
4857 | ||
eeebe20b | 4858 | gfc_find_symbol (current_ts.u.derived->name, |
d67dd34f | 4859 | current_ts.u.derived->ns, 1, &sym); |
4ee9c684 | 4860 | |
40cf8078 | 4861 | /* Any symbol that we find had better be a type definition |
d7cd448a | 4862 | which has its components defined, or be a structure definition |
4863 | actively being parsed. */ | |
4864 | if (sym != NULL && gfc_fl_struct (sym->attr.flavor) | |
eeebe20b | 4865 | && (current_ts.u.derived->components != NULL |
d7cd448a | 4866 | || current_ts.u.derived->attr.zero_comp |
4867 | || current_ts.u.derived == gfc_new_block)) | |
4ee9c684 | 4868 | goto ok; |
4869 | ||
a1e76cd9 | 4870 | gfc_error ("Derived type at %C has not been previously defined " |
4871 | "and so cannot appear in a derived type definition"); | |
4872 | m = MATCH_ERROR; | |
4873 | goto cleanup; | |
4ee9c684 | 4874 | } |
4875 | ||
4876 | ok: | |
4877 | /* If we have an old-style character declaration, and no new-style | |
4878 | attribute specifications, then there a comma is optional between | |
4879 | the type specification and the variable list. */ | |
4880 | if (m == MATCH_NO && current_ts.type == BT_CHARACTER && old_char_selector) | |
4881 | gfc_match_char (','); | |
4882 | ||
3923b69f | 4883 | /* Give the types/attributes to symbols that follow. Give the element |
4884 | a number so that repeat character length expressions can be copied. */ | |
4885 | elem = 1; | |
4ee9c684 | 4886 | for (;;) |
4887 | { | |
c5d33754 | 4888 | num_idents_on_line++; |
3923b69f | 4889 | m = variable_decl (elem++); |
4ee9c684 | 4890 | if (m == MATCH_ERROR) |
4891 | goto cleanup; | |
4892 | if (m == MATCH_NO) | |
4893 | break; | |
4894 | ||
4895 | if (gfc_match_eos () == MATCH_YES) | |
4896 | goto cleanup; | |
4897 | if (gfc_match_char (',') != MATCH_YES) | |
4898 | break; | |
4899 | } | |
4900 | ||
389e3a5e | 4901 | if (!gfc_error_flag_test ()) |
c717a688 | 4902 | { |
4903 | /* An anonymous structure declaration is unambiguous; if we matched one | |
4904 | according to gfc_match_structure_decl, we need to return MATCH_YES | |
4905 | here to avoid confusing the remaining matchers, even if there was an | |
4906 | error during variable_decl. We must flush any such errors. Note this | |
4907 | causes the parser to gracefully continue parsing the remaining input | |
4908 | as a structure body, which likely follows. */ | |
4909 | if (current_ts.type == BT_DERIVED && current_ts.u.derived | |
4910 | && gfc_fl_struct (current_ts.u.derived->attr.flavor)) | |
4911 | { | |
4912 | gfc_error_now ("Syntax error in anonymous structure declaration" | |
4913 | " at %C"); | |
4914 | /* Skip the bad variable_decl and line up for the start of the | |
4915 | structure body. */ | |
4916 | gfc_error_recovery (); | |
4917 | m = MATCH_YES; | |
4918 | goto cleanup; | |
4919 | } | |
4920 | ||
4921 | gfc_error ("Syntax error in data declaration at %C"); | |
4922 | } | |
4923 | ||
4ee9c684 | 4924 | m = MATCH_ERROR; |
4925 | ||
af29c1f0 | 4926 | gfc_free_data_all (gfc_current_ns); |
4927 | ||
4ee9c684 | 4928 | cleanup: |
4929 | gfc_free_array_spec (current_as); | |
4930 | current_as = NULL; | |
4931 | return m; | |
4932 | } | |
4933 | ||
4934 | ||
4935 | /* Match a prefix associated with a function or subroutine | |
4936 | declaration. If the typespec pointer is nonnull, then a typespec | |
4937 | can be matched. Note that if nothing matches, MATCH_YES is | |
4938 | returned (the null string was matched). */ | |
4939 | ||
077932f9 | 4940 | match |
4941 | gfc_match_prefix (gfc_typespec *ts) | |
4ee9c684 | 4942 | { |
5b11d932 | 4943 | bool seen_type; |
4e4ea00b | 4944 | bool seen_impure; |
4945 | bool found_prefix; | |
4ee9c684 | 4946 | |
4947 | gfc_clear_attr (¤t_attr); | |
4e4ea00b | 4948 | seen_type = false; |
4949 | seen_impure = false; | |
4ee9c684 | 4950 | |
d1645c7b | 4951 | gcc_assert (!gfc_matching_prefix); |
4952 | gfc_matching_prefix = true; | |
40de255b | 4953 | |
4e4ea00b | 4954 | do |
4ee9c684 | 4955 | { |
4e4ea00b | 4956 | found_prefix = false; |
4ee9c684 | 4957 | |
76e207a9 | 4958 | /* MODULE is a prefix like PURE, ELEMENTAL, etc., having a |
4959 | corresponding attribute seems natural and distinguishes these | |
4960 | procedures from procedure types of PROC_MODULE, which these are | |
4961 | as well. */ | |
4962 | if (gfc_match ("module% ") == MATCH_YES) | |
4963 | { | |
4964 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE prefix at %C")) | |
4965 | goto error; | |
4966 | ||
4967 | current_attr.module_procedure = 1; | |
4968 | found_prefix = true; | |
4969 | } | |
4970 | ||
4e4ea00b | 4971 | if (!seen_type && ts != NULL |
4972 | && gfc_match_decl_type_spec (ts, 0) == MATCH_YES | |
4973 | && gfc_match_space () == MATCH_YES) | |
4974 | { | |
4ee9c684 | 4975 | |
4e4ea00b | 4976 | seen_type = true; |
4977 | found_prefix = true; | |
4978 | } | |
4979 | ||
4980 | if (gfc_match ("elemental% ") == MATCH_YES) | |
4981 | { | |
60e19868 | 4982 | if (!gfc_add_elemental (¤t_attr, NULL)) |
4e4ea00b | 4983 | goto error; |
4984 | ||
4985 | found_prefix = true; | |
4986 | } | |
4987 | ||
4988 | if (gfc_match ("pure% ") == MATCH_YES) | |
4989 | { | |
60e19868 | 4990 | if (!gfc_add_pure (¤t_attr, NULL)) |
4e4ea00b | 4991 | goto error; |
4992 | ||
4993 | found_prefix = true; | |
4994 | } | |
4ee9c684 | 4995 | |
4e4ea00b | 4996 | if (gfc_match ("recursive% ") == MATCH_YES) |
4997 | { | |
60e19868 | 4998 | if (!gfc_add_recursive (¤t_attr, NULL)) |
4e4ea00b | 4999 | goto error; |
5000 | ||
5001 | found_prefix = true; | |
5002 | } | |
5003 | ||
5004 | /* IMPURE is a somewhat special case, as it needs not set an actual | |
5005 | attribute but rather only prevents ELEMENTAL routines from being | |
5006 | automatically PURE. */ | |
5007 | if (gfc_match ("impure% ") == MATCH_YES) | |
5008 | { | |
60e19868 | 5009 | if (!gfc_notify_std (GFC_STD_F2008, "IMPURE procedure at %C")) |
4e4ea00b | 5010 | goto error; |
5011 | ||
5012 | seen_impure = true; | |
5013 | found_prefix = true; | |
5014 | } | |
4ee9c684 | 5015 | } |
4e4ea00b | 5016 | while (found_prefix); |
4ee9c684 | 5017 | |
4e4ea00b | 5018 | /* IMPURE and PURE must not both appear, of course. */ |
5019 | if (seen_impure && current_attr.pure) | |
4ee9c684 | 5020 | { |
4e4ea00b | 5021 | gfc_error ("PURE and IMPURE must not appear both at %C"); |
5022 | goto error; | |
4ee9c684 | 5023 | } |
5024 | ||
4e4ea00b | 5025 | /* If IMPURE it not seen but the procedure is ELEMENTAL, mark it as PURE. */ |
5026 | if (!seen_impure && current_attr.elemental && !current_attr.pure) | |
4ee9c684 | 5027 | { |
60e19868 | 5028 | if (!gfc_add_pure (¤t_attr, NULL)) |
40de255b | 5029 | goto error; |
4ee9c684 | 5030 | } |
5031 | ||
5032 | /* At this point, the next item is not a prefix. */ | |
d1645c7b | 5033 | gcc_assert (gfc_matching_prefix); |
4b8eb6ca | 5034 | |
d1645c7b | 5035 | gfc_matching_prefix = false; |
4ee9c684 | 5036 | return MATCH_YES; |
40de255b | 5037 | |
5038 | error: | |
d1645c7b | 5039 | gcc_assert (gfc_matching_prefix); |
5040 | gfc_matching_prefix = false; | |
40de255b | 5041 | return MATCH_ERROR; |
4ee9c684 | 5042 | } |
5043 | ||
5044 | ||
077932f9 | 5045 | /* Copy attributes matched by gfc_match_prefix() to attributes on a symbol. */ |
4ee9c684 | 5046 | |
60e19868 | 5047 | static bool |
1a9745d2 | 5048 | copy_prefix (symbol_attribute *dest, locus *where) |
4ee9c684 | 5049 | { |
7d7125df | 5050 | if (dest->module_procedure) |
5051 | { | |
5052 | if (current_attr.elemental) | |
5053 | dest->elemental = 1; | |
5054 | ||
5055 | if (current_attr.pure) | |
5056 | dest->pure = 1; | |
5057 | ||
5058 | if (current_attr.recursive) | |
5059 | dest->recursive = 1; | |
5060 | ||
5061 | /* Module procedures are unusual in that the 'dest' is copied from | |
5062 | the interface declaration. However, this is an oportunity to | |
5063 | check that the submodule declaration is compliant with the | |
5064 | interface. */ | |
5065 | if (dest->elemental && !current_attr.elemental) | |
5066 | { | |
5067 | gfc_error ("ELEMENTAL prefix in MODULE PROCEDURE interface is " | |
5068 | "missing at %L", where); | |
5069 | return false; | |
5070 | } | |
5071 | ||
5072 | if (dest->pure && !current_attr.pure) | |
5073 | { | |
5074 | gfc_error ("PURE prefix in MODULE PROCEDURE interface is " | |
5075 | "missing at %L", where); | |
5076 | return false; | |
5077 | } | |
5078 | ||
5079 | if (dest->recursive && !current_attr.recursive) | |
5080 | { | |
5081 | gfc_error ("RECURSIVE prefix in MODULE PROCEDURE interface is " | |
5082 | "missing at %L", where); | |
5083 | return false; | |
5084 | } | |
5085 | ||
5086 | return true; | |
5087 | } | |
4ee9c684 | 5088 | |
60e19868 | 5089 | if (current_attr.elemental && !gfc_add_elemental (dest, where)) |
5090 | return false; | |
4ee9c684 | 5091 | |
7d7125df | 5092 | if (current_attr.pure && !gfc_add_pure (dest, where)) |
5093 | return false; | |
5094 | ||
60e19868 | 5095 | if (current_attr.recursive && !gfc_add_recursive (dest, where)) |
5096 | return false; | |
4ee9c684 | 5097 | |
60e19868 | 5098 | return true; |
4ee9c684 | 5099 | } |
5100 | ||
5101 | ||
5102 | /* Match a formal argument list. */ | |
5103 | ||
5104 | match | |
1a9745d2 | 5105 | gfc_match_formal_arglist (gfc_symbol *progname, int st_flag, int null_flag) |
4ee9c684 | 5106 | { |
5107 | gfc_formal_arglist *head, *tail, *p, *q; | |
5108 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5109 | gfc_symbol *sym; | |
5110 | match m; | |
4b8eb6ca | 5111 | gfc_formal_arglist *formal = NULL; |
4ee9c684 | 5112 | |
5113 | head = tail = NULL; | |
5114 | ||
4b8eb6ca | 5115 | /* Keep the interface formal argument list and null it so that the |
5116 | matching for the new declaration can be done. The numbers and | |
5117 | names of the arguments are checked here. The interface formal | |
5118 | arguments are retained in formal_arglist and the characteristics | |
5119 | are compared in resolve.c(resolve_fl_procedure). See the remark | |
5120 | in get_proc_name about the eventual need to copy the formal_arglist | |
5121 | and populate the formal namespace of the interface symbol. */ | |
5122 | if (progname->attr.module_procedure | |
5123 | && progname->attr.host_assoc) | |
5124 | { | |
5125 | formal = progname->formal; | |
5126 | progname->formal = NULL; | |
5127 | } | |
5128 | ||
4ee9c684 | 5129 | if (gfc_match_char ('(') != MATCH_YES) |
5130 | { | |
5131 | if (null_flag) | |
5132 | goto ok; | |
5133 | return MATCH_NO; | |
5134 | } | |
5135 | ||
5136 | if (gfc_match_char (')') == MATCH_YES) | |
5137 | goto ok; | |
5138 | ||
5139 | for (;;) | |
5140 | { | |
5141 | if (gfc_match_char ('*') == MATCH_YES) | |
a5d831e5 | 5142 | { |
5143 | sym = NULL; | |
60e19868 | 5144 | if (!gfc_notify_std (GFC_STD_F95_OBS, "Alternate-return argument " |
5145 | "at %C")) | |
a5d831e5 | 5146 | { |
5147 | m = MATCH_ERROR; | |
5148 | goto cleanup; | |
5149 | } | |
5150 | } | |
4ee9c684 | 5151 | else |
5152 | { | |
5153 | m = gfc_match_name (name); | |
5154 | if (m != MATCH_YES) | |
5155 | goto cleanup; | |
5156 | ||
5157 | if (gfc_get_symbol (name, NULL, &sym)) | |
5158 | goto cleanup; | |
5159 | } | |
5160 | ||
5161 | p = gfc_get_formal_arglist (); | |
5162 | ||
5163 | if (head == NULL) | |
5164 | head = tail = p; | |
5165 | else | |
5166 | { | |
5167 | tail->next = p; | |
5168 | tail = p; | |
5169 | } | |
5170 | ||
5171 | tail->sym = sym; | |
5172 | ||
5173 | /* We don't add the VARIABLE flavor because the name could be a | |
1a9745d2 | 5174 | dummy procedure. We don't apply these attributes to formal |
5175 | arguments of statement functions. */ | |
4ee9c684 | 5176 | if (sym != NULL && !st_flag |
60e19868 | 5177 | && (!gfc_add_dummy(&sym->attr, sym->name, NULL) |
5178 | || !gfc_missing_attr (&sym->attr, NULL))) | |
4ee9c684 | 5179 | { |
5180 | m = MATCH_ERROR; | |
5181 | goto cleanup; | |
5182 | } | |
5183 | ||
5184 | /* The name of a program unit can be in a different namespace, | |
1a9745d2 | 5185 | so check for it explicitly. After the statement is accepted, |
5186 | the name is checked for especially in gfc_get_symbol(). */ | |
4ee9c684 | 5187 | if (gfc_new_block != NULL && sym != NULL |
5188 | && strcmp (sym->name, gfc_new_block->name) == 0) | |
5189 | { | |
716da296 | 5190 | gfc_error ("Name %qs at %C is the name of the procedure", |
4ee9c684 | 5191 | sym->name); |
5192 | m = MATCH_ERROR; | |
5193 | goto cleanup; | |
5194 | } | |
5195 | ||
5196 | if (gfc_match_char (')') == MATCH_YES) | |
5197 | goto ok; | |
5198 | ||
5199 | m = gfc_match_char (','); | |
5200 | if (m != MATCH_YES) | |
5201 | { | |
5202 | gfc_error ("Unexpected junk in formal argument list at %C"); | |
5203 | goto cleanup; | |
5204 | } | |
5205 | } | |
5206 | ||
5207 | ok: | |
5208 | /* Check for duplicate symbols in the formal argument list. */ | |
5209 | if (head != NULL) | |
5210 | { | |
5211 | for (p = head; p->next; p = p->next) | |
5212 | { | |
5213 | if (p->sym == NULL) | |
5214 | continue; | |
5215 | ||
5216 | for (q = p->next; q; q = q->next) | |
5217 | if (p->sym == q->sym) | |
5218 | { | |
716da296 | 5219 | gfc_error ("Duplicate symbol %qs in formal argument list " |
1a9745d2 | 5220 | "at %C", p->sym->name); |
4ee9c684 | 5221 | |
5222 | m = MATCH_ERROR; | |
5223 | goto cleanup; | |
5224 | } | |
5225 | } | |
5226 | } | |
5227 | ||
60e19868 | 5228 | if (!gfc_add_explicit_interface (progname, IFSRC_DECL, head, NULL)) |
4ee9c684 | 5229 | { |
5230 | m = MATCH_ERROR; | |
5231 | goto cleanup; | |
5232 | } | |
5233 | ||
cc78610f | 5234 | /* gfc_error_now used in following and return with MATCH_YES because |
5235 | doing otherwise results in a cascade of extraneous errors and in | |
5236 | some cases an ICE in symbol.c(gfc_release_symbol). */ | |
a23f57e2 | 5237 | if (progname->attr.module_procedure && progname->attr.host_assoc) |
4b8eb6ca | 5238 | { |
a23f57e2 | 5239 | bool arg_count_mismatch = false; |
5240 | ||
5241 | if (!formal && head) | |
5242 | arg_count_mismatch = true; | |
5243 | ||
5244 | /* Abbreviated module procedure declaration is not meant to have any | |
5245 | formal arguments! */ | |
cc78610f | 5246 | if (!progname->abr_modproc_decl && formal && !head) |
a23f57e2 | 5247 | arg_count_mismatch = true; |
5248 | ||
4b8eb6ca | 5249 | for (p = formal, q = head; p && q; p = p->next, q = q->next) |
5250 | { | |
5251 | if ((p->next != NULL && q->next == NULL) | |
5252 | || (p->next == NULL && q->next != NULL)) | |
a23f57e2 | 5253 | arg_count_mismatch = true; |
4b8eb6ca | 5254 | else if ((p->sym == NULL && q->sym == NULL) |
5255 | || strcmp (p->sym->name, q->sym->name) == 0) | |
5256 | continue; | |
5257 | else | |
5258 | gfc_error_now ("Mismatch in MODULE PROCEDURE formal " | |
5259 | "argument names (%s/%s) at %C", | |
5260 | p->sym->name, q->sym->name); | |
5261 | } | |
a23f57e2 | 5262 | |
5263 | if (arg_count_mismatch) | |
5264 | gfc_error_now ("Mismatch in number of MODULE PROCEDURE " | |
5265 | "formal arguments at %C"); | |
4b8eb6ca | 5266 | } |
5267 | ||
4ee9c684 | 5268 | return MATCH_YES; |
5269 | ||
5270 | cleanup: | |
5271 | gfc_free_formal_arglist (head); | |
5272 | return m; | |
5273 | } | |
5274 | ||
5275 | ||
5276 | /* Match a RESULT specification following a function declaration or | |
5277 | ENTRY statement. Also matches the end-of-statement. */ | |
5278 | ||
5279 | static match | |
f6d0e37a | 5280 | match_result (gfc_symbol *function, gfc_symbol **result) |
4ee9c684 | 5281 | { |
5282 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5283 | gfc_symbol *r; | |
5284 | match m; | |
5285 | ||
5286 | if (gfc_match (" result (") != MATCH_YES) | |
5287 | return MATCH_NO; | |
5288 | ||
5289 | m = gfc_match_name (name); | |
5290 | if (m != MATCH_YES) | |
5291 | return m; | |
5292 | ||
c5d33754 | 5293 | /* Get the right paren, and that's it because there could be the |
5294 | bind(c) attribute after the result clause. */ | |
60e19868 | 5295 | if (gfc_match_char (')') != MATCH_YES) |
4ee9c684 | 5296 | { |
c5d33754 | 5297 | /* TODO: should report the missing right paren here. */ |
4ee9c684 | 5298 | return MATCH_ERROR; |
5299 | } | |
5300 | ||
5301 | if (strcmp (function->name, name) == 0) | |
5302 | { | |
1a9745d2 | 5303 | gfc_error ("RESULT variable at %C must be different than function name"); |
4ee9c684 | 5304 | return MATCH_ERROR; |
5305 | } | |
5306 | ||
5307 | if (gfc_get_symbol (name, NULL, &r)) | |
5308 | return MATCH_ERROR; | |
5309 | ||
60e19868 | 5310 | if (!gfc_add_result (&r->attr, r->name, NULL)) |
4ee9c684 | 5311 | return MATCH_ERROR; |
5312 | ||
5313 | *result = r; | |
5314 | ||
5315 | return MATCH_YES; | |
5316 | } | |
5317 | ||
5318 | ||
c5d33754 | 5319 | /* Match a function suffix, which could be a combination of a result |
5320 | clause and BIND(C), either one, or neither. The draft does not | |
5321 | require them to come in a specific order. */ | |
5322 | ||
5323 | match | |
5324 | gfc_match_suffix (gfc_symbol *sym, gfc_symbol **result) | |
5325 | { | |
5326 | match is_bind_c; /* Found bind(c). */ | |
5327 | match is_result; /* Found result clause. */ | |
5328 | match found_match; /* Status of whether we've found a good match. */ | |
e0be6f02 | 5329 | char peek_char; /* Character we're going to peek at. */ |
75ae7f6c | 5330 | bool allow_binding_name; |
c5d33754 | 5331 | |
5332 | /* Initialize to having found nothing. */ | |
5333 | found_match = MATCH_NO; | |
8db94b3b | 5334 | is_bind_c = MATCH_NO; |
c5d33754 | 5335 | is_result = MATCH_NO; |
5336 | ||
5337 | /* Get the next char to narrow between result and bind(c). */ | |
5338 | gfc_gobble_whitespace (); | |
e0be6f02 | 5339 | peek_char = gfc_peek_ascii_char (); |
c5d33754 | 5340 | |
75ae7f6c | 5341 | /* C binding names are not allowed for internal procedures. */ |
5342 | if (gfc_current_state () == COMP_CONTAINS | |
5343 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
5344 | allow_binding_name = false; | |
5345 | else | |
5346 | allow_binding_name = true; | |
5347 | ||
c5d33754 | 5348 | switch (peek_char) |
5349 | { | |
5350 | case 'r': | |
5351 | /* Look for result clause. */ | |
5352 | is_result = match_result (sym, result); | |
5353 | if (is_result == MATCH_YES) | |
5354 | { | |
5355 | /* Now see if there is a bind(c) after it. */ | |
75ae7f6c | 5356 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
c5d33754 | 5357 | /* We've found the result clause and possibly bind(c). */ |
5358 | found_match = MATCH_YES; | |
5359 | } | |
5360 | else | |
5361 | /* This should only be MATCH_ERROR. */ | |
8db94b3b | 5362 | found_match = is_result; |
c5d33754 | 5363 | break; |
5364 | case 'b': | |
5365 | /* Look for bind(c) first. */ | |
75ae7f6c | 5366 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
c5d33754 | 5367 | if (is_bind_c == MATCH_YES) |
5368 | { | |
5369 | /* Now see if a result clause followed it. */ | |
5370 | is_result = match_result (sym, result); | |
5371 | found_match = MATCH_YES; | |
5372 | } | |
5373 | else | |
5374 | { | |
5375 | /* Should only be a MATCH_ERROR if we get here after seeing 'b'. */ | |
5376 | found_match = MATCH_ERROR; | |
5377 | } | |
5378 | break; | |
5379 | default: | |
5380 | gfc_error ("Unexpected junk after function declaration at %C"); | |
5381 | found_match = MATCH_ERROR; | |
5382 | break; | |
5383 | } | |
5384 | ||
c5d33754 | 5385 | if (is_bind_c == MATCH_YES) |
4518e961 | 5386 | { |
75ae7f6c | 5387 | /* Fortran 2008 draft allows BIND(C) for internal procedures. */ |
4518e961 | 5388 | if (gfc_current_state () == COMP_CONTAINS |
75ae7f6c | 5389 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
60e19868 | 5390 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
5391 | "at %L may not be specified for an internal " | |
5392 | "procedure", &gfc_current_locus)) | |
75ae7f6c | 5393 | return MATCH_ERROR; |
5394 | ||
60e19868 | 5395 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, &gfc_current_locus, 1)) |
4518e961 | 5396 | return MATCH_ERROR; |
5397 | } | |
8db94b3b | 5398 | |
c5d33754 | 5399 | return found_match; |
5400 | } | |
5401 | ||
5402 | ||
1e057e9b | 5403 | /* Procedure pointer return value without RESULT statement: |
5404 | Add "hidden" result variable named "ppr@". */ | |
5405 | ||
60e19868 | 5406 | static bool |
1e057e9b | 5407 | add_hidden_procptr_result (gfc_symbol *sym) |
5408 | { | |
5409 | bool case1,case2; | |
5410 | ||
5411 | if (gfc_notification_std (GFC_STD_F2003) == ERROR) | |
60e19868 | 5412 | return false; |
1e057e9b | 5413 | |
5414 | /* First usage case: PROCEDURE and EXTERNAL statements. */ | |
5415 | case1 = gfc_current_state () == COMP_FUNCTION && gfc_current_block () | |
5416 | && strcmp (gfc_current_block ()->name, sym->name) == 0 | |
5417 | && sym->attr.external; | |
5418 | /* Second usage case: INTERFACE statements. */ | |
5419 | case2 = gfc_current_state () == COMP_INTERFACE && gfc_state_stack->previous | |
5420 | && gfc_state_stack->previous->state == COMP_FUNCTION | |
5421 | && strcmp (gfc_state_stack->previous->sym->name, sym->name) == 0; | |
5422 | ||
5423 | if (case1 || case2) | |
5424 | { | |
5425 | gfc_symtree *stree; | |
5426 | if (case1) | |
36b0a1b0 | 5427 | gfc_get_sym_tree ("ppr@", gfc_current_ns, &stree, false); |
1e057e9b | 5428 | else if (case2) |
180a5dc0 | 5429 | { |
5430 | gfc_symtree *st2; | |
36b0a1b0 | 5431 | gfc_get_sym_tree ("ppr@", gfc_current_ns->parent, &stree, false); |
180a5dc0 | 5432 | st2 = gfc_new_symtree (&gfc_current_ns->sym_root, "ppr@"); |
5433 | st2->n.sym = stree->n.sym; | |
5434 | } | |
1e057e9b | 5435 | sym->result = stree->n.sym; |
5436 | ||
5437 | sym->result->attr.proc_pointer = sym->attr.proc_pointer; | |
5438 | sym->result->attr.pointer = sym->attr.pointer; | |
5439 | sym->result->attr.external = sym->attr.external; | |
5440 | sym->result->attr.referenced = sym->attr.referenced; | |
e40ac2fe | 5441 | sym->result->ts = sym->ts; |
1e057e9b | 5442 | sym->attr.proc_pointer = 0; |
5443 | sym->attr.pointer = 0; | |
5444 | sym->attr.external = 0; | |
5445 | if (sym->result->attr.external && sym->result->attr.pointer) | |
5446 | { | |
5447 | sym->result->attr.pointer = 0; | |
5448 | sym->result->attr.proc_pointer = 1; | |
5449 | } | |
5450 | ||
5451 | return gfc_add_result (&sym->result->attr, sym->result->name, NULL); | |
5452 | } | |
5453 | /* POINTER after PROCEDURE/EXTERNAL/INTERFACE statement. */ | |
5454 | else if (sym->attr.function && !sym->attr.external && sym->attr.pointer | |
5455 | && sym->result && sym->result != sym && sym->result->attr.external | |
5456 | && sym == gfc_current_ns->proc_name | |
5457 | && sym == sym->result->ns->proc_name | |
5458 | && strcmp ("ppr@", sym->result->name) == 0) | |
5459 | { | |
5460 | sym->result->attr.proc_pointer = 1; | |
5461 | sym->attr.pointer = 0; | |
60e19868 | 5462 | return true; |
1e057e9b | 5463 | } |
5464 | else | |
60e19868 | 5465 | return false; |
1e057e9b | 5466 | } |
5467 | ||
5468 | ||
64e93293 | 5469 | /* Match the interface for a PROCEDURE declaration, |
5470 | including brackets (R1212). */ | |
af1a34ee | 5471 | |
5472 | static match | |
64e93293 | 5473 | match_procedure_interface (gfc_symbol **proc_if) |
af1a34ee | 5474 | { |
5475 | match m; | |
1eb2b542 | 5476 | gfc_symtree *st; |
af1a34ee | 5477 | locus old_loc, entry_loc; |
1eb2b542 | 5478 | gfc_namespace *old_ns = gfc_current_ns; |
5479 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
af1a34ee | 5480 | |
1eb2b542 | 5481 | old_loc = entry_loc = gfc_current_locus; |
af1a34ee | 5482 | gfc_clear_ts (¤t_ts); |
5483 | ||
5484 | if (gfc_match (" (") != MATCH_YES) | |
5485 | { | |
5486 | gfc_current_locus = entry_loc; | |
5487 | return MATCH_NO; | |
5488 | } | |
5489 | ||
5490 | /* Get the type spec. for the procedure interface. */ | |
5491 | old_loc = gfc_current_locus; | |
e8152f13 | 5492 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
fd1277c3 | 5493 | gfc_gobble_whitespace (); |
e0be6f02 | 5494 | if (m == MATCH_YES || (m == MATCH_NO && gfc_peek_ascii_char () == ')')) |
af1a34ee | 5495 | goto got_ts; |
5496 | ||
5497 | if (m == MATCH_ERROR) | |
5498 | return m; | |
5499 | ||
1eb2b542 | 5500 | /* Procedure interface is itself a procedure. */ |
af1a34ee | 5501 | gfc_current_locus = old_loc; |
1eb2b542 | 5502 | m = gfc_match_name (name); |
af1a34ee | 5503 | |
1eb2b542 | 5504 | /* First look to see if it is already accessible in the current |
5505 | namespace because it is use associated or contained. */ | |
5506 | st = NULL; | |
5507 | if (gfc_find_sym_tree (name, NULL, 0, &st)) | |
5508 | return MATCH_ERROR; | |
5509 | ||
5510 | /* If it is still not found, then try the parent namespace, if it | |
5511 | exists and create the symbol there if it is still not found. */ | |
5512 | if (gfc_current_ns->parent) | |
5513 | gfc_current_ns = gfc_current_ns->parent; | |
5514 | if (st == NULL && gfc_get_ha_sym_tree (name, &st)) | |
5515 | return MATCH_ERROR; | |
5516 | ||
5517 | gfc_current_ns = old_ns; | |
5518 | *proc_if = st->n.sym; | |
af1a34ee | 5519 | |
64e93293 | 5520 | if (*proc_if) |
af1a34ee | 5521 | { |
64e93293 | 5522 | (*proc_if)->refs++; |
74113644 | 5523 | /* Resolve interface if possible. That way, attr.procedure is only set |
5524 | if it is declared by a later procedure-declaration-stmt, which is | |
87863b31 | 5525 | invalid per F08:C1216 (cf. resolve_procedure_interface). */ |
7e9136f1 | 5526 | while ((*proc_if)->ts.interface |
5527 | && *proc_if != (*proc_if)->ts.interface) | |
64e93293 | 5528 | *proc_if = (*proc_if)->ts.interface; |
74113644 | 5529 | |
87863b31 | 5530 | if ((*proc_if)->attr.flavor == FL_UNKNOWN |
5531 | && (*proc_if)->ts.type == BT_UNKNOWN | |
76e207a9 | 5532 | && !gfc_add_flavor (&(*proc_if)->attr, FL_PROCEDURE, |
60e19868 | 5533 | (*proc_if)->name, NULL)) |
87863b31 | 5534 | return MATCH_ERROR; |
af1a34ee | 5535 | } |
5536 | ||
5537 | got_ts: | |
af1a34ee | 5538 | if (gfc_match (" )") != MATCH_YES) |
5539 | { | |
5540 | gfc_current_locus = entry_loc; | |
5541 | return MATCH_NO; | |
5542 | } | |
5543 | ||
64e93293 | 5544 | return MATCH_YES; |
5545 | } | |
5546 | ||
5547 | ||
5548 | /* Match a PROCEDURE declaration (R1211). */ | |
5549 | ||
5550 | static match | |
5551 | match_procedure_decl (void) | |
5552 | { | |
5553 | match m; | |
5554 | gfc_symbol *sym, *proc_if = NULL; | |
5555 | int num; | |
5556 | gfc_expr *initializer = NULL; | |
5557 | ||
293d72e0 | 5558 | /* Parse interface (with brackets). */ |
64e93293 | 5559 | m = match_procedure_interface (&proc_if); |
5560 | if (m != MATCH_YES) | |
5561 | return m; | |
5562 | ||
5563 | /* Parse attributes (with colons). */ | |
af1a34ee | 5564 | m = match_attr_spec(); |
5565 | if (m == MATCH_ERROR) | |
5566 | return MATCH_ERROR; | |
5567 | ||
caa3ea40 | 5568 | if (proc_if && proc_if->attr.is_bind_c && !current_attr.is_bind_c) |
5569 | { | |
5570 | current_attr.is_bind_c = 1; | |
5571 | has_name_equals = 0; | |
5572 | curr_binding_label = NULL; | |
5573 | } | |
5574 | ||
af1a34ee | 5575 | /* Get procedure symbols. */ |
5576 | for(num=1;;num++) | |
5577 | { | |
af1a34ee | 5578 | m = gfc_match_symbol (&sym, 0); |
5579 | if (m == MATCH_NO) | |
5580 | goto syntax; | |
5581 | else if (m == MATCH_ERROR) | |
5582 | return m; | |
5583 | ||
5584 | /* Add current_attr to the symbol attributes. */ | |
60e19868 | 5585 | if (!gfc_copy_attr (&sym->attr, ¤t_attr, NULL)) |
af1a34ee | 5586 | return MATCH_ERROR; |
5587 | ||
5588 | if (sym->attr.is_bind_c) | |
5589 | { | |
5590 | /* Check for C1218. */ | |
5591 | if (!proc_if || !proc_if->attr.is_bind_c) | |
5592 | { | |
5593 | gfc_error ("BIND(C) attribute at %C requires " | |
5594 | "an interface with BIND(C)"); | |
5595 | return MATCH_ERROR; | |
5596 | } | |
5597 | /* Check for C1217. */ | |
5598 | if (has_name_equals && sym->attr.pointer) | |
5599 | { | |
5600 | gfc_error ("BIND(C) procedure with NAME may not have " | |
5601 | "POINTER attribute at %C"); | |
5602 | return MATCH_ERROR; | |
5603 | } | |
5604 | if (has_name_equals && sym->attr.dummy) | |
5605 | { | |
5606 | gfc_error ("Dummy procedure at %C may not have " | |
5607 | "BIND(C) attribute with NAME"); | |
5608 | return MATCH_ERROR; | |
5609 | } | |
5610 | /* Set binding label for BIND(C). */ | |
60e19868 | 5611 | if (!set_binding_label (&sym->binding_label, sym->name, num)) |
af1a34ee | 5612 | return MATCH_ERROR; |
5613 | } | |
5614 | ||
60e19868 | 5615 | if (!gfc_add_external (&sym->attr, NULL)) |
af1a34ee | 5616 | return MATCH_ERROR; |
1e057e9b | 5617 | |
60e19868 | 5618 | if (add_hidden_procptr_result (sym)) |
1e057e9b | 5619 | sym = sym->result; |
5620 | ||
60e19868 | 5621 | if (!gfc_add_proc (&sym->attr, sym->name, NULL)) |
af1a34ee | 5622 | return MATCH_ERROR; |
5623 | ||
5624 | /* Set interface. */ | |
5625 | if (proc_if != NULL) | |
f7d7a083 | 5626 | { |
13a834aa | 5627 | if (sym->ts.type != BT_UNKNOWN) |
5628 | { | |
716da296 | 5629 | gfc_error ("Procedure %qs at %L already has basic type of %s", |
13a834aa | 5630 | sym->name, &gfc_current_locus, |
5631 | gfc_basic_typename (sym->ts.type)); | |
5632 | return MATCH_ERROR; | |
5633 | } | |
2cd2bb5c | 5634 | sym->ts.interface = proc_if; |
f7d7a083 | 5635 | sym->attr.untyped = 1; |
180a5dc0 | 5636 | sym->attr.if_source = IFSRC_IFBODY; |
f7d7a083 | 5637 | } |
af1a34ee | 5638 | else if (current_ts.type != BT_UNKNOWN) |
5639 | { | |
60e19868 | 5640 | if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
13a834aa | 5641 | return MATCH_ERROR; |
2cd2bb5c | 5642 | sym->ts.interface = gfc_new_symbol ("", gfc_current_ns); |
5643 | sym->ts.interface->ts = current_ts; | |
ce80bc5b | 5644 | sym->ts.interface->attr.flavor = FL_PROCEDURE; |
2cd2bb5c | 5645 | sym->ts.interface->attr.function = 1; |
ce80bc5b | 5646 | sym->attr.function = 1; |
180a5dc0 | 5647 | sym->attr.if_source = IFSRC_UNKNOWN; |
af1a34ee | 5648 | } |
5649 | ||
cad0ddcf | 5650 | if (gfc_match (" =>") == MATCH_YES) |
5651 | { | |
5652 | if (!current_attr.pointer) | |
5653 | { | |
5654 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
5655 | m = MATCH_ERROR; | |
5656 | goto cleanup; | |
5657 | } | |
5658 | ||
23d075f4 | 5659 | m = match_pointer_init (&initializer, 1); |
cad0ddcf | 5660 | if (m != MATCH_YES) |
5661 | goto cleanup; | |
5662 | ||
60e19868 | 5663 | if (!add_init_expr_to_sym (sym->name, &initializer, &gfc_current_locus)) |
cad0ddcf | 5664 | goto cleanup; |
5665 | ||
5666 | } | |
5667 | ||
af1a34ee | 5668 | if (gfc_match_eos () == MATCH_YES) |
5669 | return MATCH_YES; | |
5670 | if (gfc_match_char (',') != MATCH_YES) | |
5671 | goto syntax; | |
5672 | } | |
5673 | ||
5674 | syntax: | |
5675 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
5676 | return MATCH_ERROR; | |
cad0ddcf | 5677 | |
5678 | cleanup: | |
5679 | /* Free stuff up and return. */ | |
5680 | gfc_free_expr (initializer); | |
5681 | return m; | |
af1a34ee | 5682 | } |
5683 | ||
5684 | ||
64e93293 | 5685 | static match |
5686 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc); | |
5687 | ||
5688 | ||
5689 | /* Match a procedure pointer component declaration (R445). */ | |
5690 | ||
5691 | static match | |
5692 | match_ppc_decl (void) | |
5693 | { | |
5694 | match m; | |
5695 | gfc_symbol *proc_if = NULL; | |
5696 | gfc_typespec ts; | |
5697 | int num; | |
5698 | gfc_component *c; | |
5699 | gfc_expr *initializer = NULL; | |
5700 | gfc_typebound_proc* tb; | |
5701 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5702 | ||
5703 | /* Parse interface (with brackets). */ | |
5704 | m = match_procedure_interface (&proc_if); | |
5705 | if (m != MATCH_YES) | |
5706 | goto syntax; | |
5707 | ||
5708 | /* Parse attributes. */ | |
5709 | tb = XCNEW (gfc_typebound_proc); | |
5710 | tb->where = gfc_current_locus; | |
5711 | m = match_binding_attributes (tb, false, true); | |
5712 | if (m == MATCH_ERROR) | |
5713 | return m; | |
5714 | ||
64e93293 | 5715 | gfc_clear_attr (¤t_attr); |
5716 | current_attr.procedure = 1; | |
5717 | current_attr.proc_pointer = 1; | |
5718 | current_attr.access = tb->access; | |
5719 | current_attr.flavor = FL_PROCEDURE; | |
5720 | ||
5721 | /* Match the colons (required). */ | |
5722 | if (gfc_match (" ::") != MATCH_YES) | |
5723 | { | |
0d2b3c9c | 5724 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
64e93293 | 5725 | return MATCH_ERROR; |
5726 | } | |
5727 | ||
5728 | /* Check for C450. */ | |
5729 | if (!tb->nopass && proc_if == NULL) | |
5730 | { | |
5731 | gfc_error("NOPASS or explicit interface required at %C"); | |
5732 | return MATCH_ERROR; | |
5733 | } | |
5734 | ||
60e19868 | 5735 | if (!gfc_notify_std (GFC_STD_F2003, "Procedure pointer component at %C")) |
8a026279 | 5736 | return MATCH_ERROR; |
5737 | ||
64e93293 | 5738 | /* Match PPC names. */ |
5739 | ts = current_ts; | |
5740 | for(num=1;;num++) | |
5741 | { | |
5742 | m = gfc_match_name (name); | |
5743 | if (m == MATCH_NO) | |
5744 | goto syntax; | |
5745 | else if (m == MATCH_ERROR) | |
5746 | return m; | |
5747 | ||
60e19868 | 5748 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
64e93293 | 5749 | return MATCH_ERROR; |
5750 | ||
5751 | /* Add current_attr to the symbol attributes. */ | |
60e19868 | 5752 | if (!gfc_copy_attr (&c->attr, ¤t_attr, NULL)) |
64e93293 | 5753 | return MATCH_ERROR; |
5754 | ||
60e19868 | 5755 | if (!gfc_add_external (&c->attr, NULL)) |
64e93293 | 5756 | return MATCH_ERROR; |
5757 | ||
60e19868 | 5758 | if (!gfc_add_proc (&c->attr, name, NULL)) |
64e93293 | 5759 | return MATCH_ERROR; |
5760 | ||
99014f81 | 5761 | if (num == 1) |
5762 | c->tb = tb; | |
5763 | else | |
5764 | { | |
5765 | c->tb = XCNEW (gfc_typebound_proc); | |
5766 | c->tb->where = gfc_current_locus; | |
5767 | *c->tb = *tb; | |
5768 | } | |
fe9b08a2 | 5769 | |
64e93293 | 5770 | /* Set interface. */ |
5771 | if (proc_if != NULL) | |
5772 | { | |
5773 | c->ts.interface = proc_if; | |
5774 | c->attr.untyped = 1; | |
5775 | c->attr.if_source = IFSRC_IFBODY; | |
5776 | } | |
5777 | else if (ts.type != BT_UNKNOWN) | |
5778 | { | |
5779 | c->ts = ts; | |
5780 | c->ts.interface = gfc_new_symbol ("", gfc_current_ns); | |
a63bcd97 | 5781 | c->ts.interface->result = c->ts.interface; |
64e93293 | 5782 | c->ts.interface->ts = ts; |
ce80bc5b | 5783 | c->ts.interface->attr.flavor = FL_PROCEDURE; |
64e93293 | 5784 | c->ts.interface->attr.function = 1; |
ce80bc5b | 5785 | c->attr.function = 1; |
64e93293 | 5786 | c->attr.if_source = IFSRC_UNKNOWN; |
5787 | } | |
5788 | ||
5789 | if (gfc_match (" =>") == MATCH_YES) | |
5790 | { | |
23d075f4 | 5791 | m = match_pointer_init (&initializer, 1); |
64e93293 | 5792 | if (m != MATCH_YES) |
5793 | { | |
5794 | gfc_free_expr (initializer); | |
5795 | return m; | |
5796 | } | |
5797 | c->initializer = initializer; | |
5798 | } | |
5799 | ||
5800 | if (gfc_match_eos () == MATCH_YES) | |
5801 | return MATCH_YES; | |
5802 | if (gfc_match_char (',') != MATCH_YES) | |
5803 | goto syntax; | |
5804 | } | |
5805 | ||
5806 | syntax: | |
5807 | gfc_error ("Syntax error in procedure pointer component at %C"); | |
5808 | return MATCH_ERROR; | |
5809 | } | |
5810 | ||
5811 | ||
af1a34ee | 5812 | /* Match a PROCEDURE declaration inside an interface (R1206). */ |
5813 | ||
5814 | static match | |
5815 | match_procedure_in_interface (void) | |
5816 | { | |
5817 | match m; | |
5818 | gfc_symbol *sym; | |
5819 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
2b0f5dc8 | 5820 | locus old_locus; |
af1a34ee | 5821 | |
5822 | if (current_interface.type == INTERFACE_NAMELESS | |
5823 | || current_interface.type == INTERFACE_ABSTRACT) | |
5824 | { | |
5825 | gfc_error ("PROCEDURE at %C must be in a generic interface"); | |
5826 | return MATCH_ERROR; | |
5827 | } | |
5828 | ||
2b0f5dc8 | 5829 | /* Check if the F2008 optional double colon appears. */ |
5830 | gfc_gobble_whitespace (); | |
5831 | old_locus = gfc_current_locus; | |
5832 | if (gfc_match ("::") == MATCH_YES) | |
5833 | { | |
60e19868 | 5834 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
5835 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
2b0f5dc8 | 5836 | return MATCH_ERROR; |
5837 | } | |
5838 | else | |
5839 | gfc_current_locus = old_locus; | |
5840 | ||
af1a34ee | 5841 | for(;;) |
5842 | { | |
5843 | m = gfc_match_name (name); | |
5844 | if (m == MATCH_NO) | |
5845 | goto syntax; | |
5846 | else if (m == MATCH_ERROR) | |
5847 | return m; | |
5848 | if (gfc_get_symbol (name, gfc_current_ns->parent, &sym)) | |
5849 | return MATCH_ERROR; | |
5850 | ||
60e19868 | 5851 | if (!gfc_add_interface (sym)) |
af1a34ee | 5852 | return MATCH_ERROR; |
5853 | ||
af1a34ee | 5854 | if (gfc_match_eos () == MATCH_YES) |
5855 | break; | |
5856 | if (gfc_match_char (',') != MATCH_YES) | |
5857 | goto syntax; | |
5858 | } | |
5859 | ||
5860 | return MATCH_YES; | |
5861 | ||
5862 | syntax: | |
5863 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
5864 | return MATCH_ERROR; | |
5865 | } | |
5866 | ||
5867 | ||
5868 | /* General matcher for PROCEDURE declarations. */ | |
5869 | ||
7fd88f6e | 5870 | static match match_procedure_in_type (void); |
5871 | ||
af1a34ee | 5872 | match |
5873 | gfc_match_procedure (void) | |
5874 | { | |
5875 | match m; | |
5876 | ||
5877 | switch (gfc_current_state ()) | |
5878 | { | |
5879 | case COMP_NONE: | |
5880 | case COMP_PROGRAM: | |
5881 | case COMP_MODULE: | |
4b8eb6ca | 5882 | case COMP_SUBMODULE: |
af1a34ee | 5883 | case COMP_SUBROUTINE: |
5884 | case COMP_FUNCTION: | |
0b342e60 | 5885 | case COMP_BLOCK: |
af1a34ee | 5886 | m = match_procedure_decl (); |
5887 | break; | |
5888 | case COMP_INTERFACE: | |
5889 | m = match_procedure_in_interface (); | |
5890 | break; | |
5891 | case COMP_DERIVED: | |
64e93293 | 5892 | m = match_ppc_decl (); |
5893 | break; | |
7fd88f6e | 5894 | case COMP_DERIVED_CONTAINS: |
5895 | m = match_procedure_in_type (); | |
5896 | break; | |
af1a34ee | 5897 | default: |
5898 | return MATCH_NO; | |
5899 | } | |
5900 | ||
5901 | if (m != MATCH_YES) | |
5902 | return m; | |
5903 | ||
60e19868 | 5904 | if (!gfc_notify_std (GFC_STD_F2003, "PROCEDURE statement at %C")) |
af1a34ee | 5905 | return MATCH_ERROR; |
5906 | ||
5907 | return m; | |
5908 | } | |
5909 | ||
5910 | ||
a34926ba | 5911 | /* Warn if a matched procedure has the same name as an intrinsic; this is |
5912 | simply a wrapper around gfc_warn_intrinsic_shadow that interprets the current | |
5913 | parser-state-stack to find out whether we're in a module. */ | |
5914 | ||
5915 | static void | |
8290d53f | 5916 | do_warn_intrinsic_shadow (const gfc_symbol* sym, bool func) |
a34926ba | 5917 | { |
5918 | bool in_module; | |
5919 | ||
5920 | in_module = (gfc_state_stack->previous | |
4b8eb6ca | 5921 | && (gfc_state_stack->previous->state == COMP_MODULE |
5922 | || gfc_state_stack->previous->state == COMP_SUBMODULE)); | |
a34926ba | 5923 | |
5924 | gfc_warn_intrinsic_shadow (sym, in_module, func); | |
5925 | } | |
5926 | ||
5927 | ||
4ee9c684 | 5928 | /* Match a function declaration. */ |
5929 | ||
5930 | match | |
5931 | gfc_match_function_decl (void) | |
5932 | { | |
5933 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5934 | gfc_symbol *sym, *result; | |
5935 | locus old_loc; | |
5936 | match m; | |
c5d33754 | 5937 | match suffix_match; |
8db94b3b | 5938 | match found_match; /* Status returned by match func. */ |
4ee9c684 | 5939 | |
5940 | if (gfc_current_state () != COMP_NONE | |
5941 | && gfc_current_state () != COMP_INTERFACE | |
5942 | && gfc_current_state () != COMP_CONTAINS) | |
5943 | return MATCH_NO; | |
5944 | ||
5945 | gfc_clear_ts (¤t_ts); | |
5946 | ||
cbb9e6aa | 5947 | old_loc = gfc_current_locus; |
4ee9c684 | 5948 | |
077932f9 | 5949 | m = gfc_match_prefix (¤t_ts); |
4ee9c684 | 5950 | if (m != MATCH_YES) |
5951 | { | |
cbb9e6aa | 5952 | gfc_current_locus = old_loc; |
4ee9c684 | 5953 | return m; |
5954 | } | |
5955 | ||
5956 | if (gfc_match ("function% %n", name) != MATCH_YES) | |
5957 | { | |
cbb9e6aa | 5958 | gfc_current_locus = old_loc; |
4ee9c684 | 5959 | return MATCH_NO; |
5960 | } | |
4b8eb6ca | 5961 | |
d77f260f | 5962 | if (get_proc_name (name, &sym, false)) |
4ee9c684 | 5963 | return MATCH_ERROR; |
1e057e9b | 5964 | |
60e19868 | 5965 | if (add_hidden_procptr_result (sym)) |
1e057e9b | 5966 | sym = sym->result; |
5967 | ||
4b8eb6ca | 5968 | if (current_attr.module_procedure) |
5969 | sym->attr.module_procedure = 1; | |
5970 | ||
4ee9c684 | 5971 | gfc_new_block = sym; |
5972 | ||
5973 | m = gfc_match_formal_arglist (sym, 0, 0); | |
5974 | if (m == MATCH_NO) | |
9b435b6d | 5975 | { |
5976 | gfc_error ("Expected formal argument list in function " | |
1a9745d2 | 5977 | "definition at %C"); |
9b435b6d | 5978 | m = MATCH_ERROR; |
5979 | goto cleanup; | |
5980 | } | |
4ee9c684 | 5981 | else if (m == MATCH_ERROR) |
5982 | goto cleanup; | |
5983 | ||
5984 | result = NULL; | |
5985 | ||
c5d33754 | 5986 | /* According to the draft, the bind(c) and result clause can |
5987 | come in either order after the formal_arg_list (i.e., either | |
5988 | can be first, both can exist together or by themselves or neither | |
5989 | one). Therefore, the match_result can't match the end of the | |
5990 | string, and check for the bind(c) or result clause in either order. */ | |
5991 | found_match = gfc_match_eos (); | |
5992 | ||
5993 | /* Make sure that it isn't already declared as BIND(C). If it is, it | |
5994 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5995 | not allowed for procedures. */ | |
5996 | if (sym->attr.is_bind_c == 1) | |
5997 | { | |
5998 | sym->attr.is_bind_c = 0; | |
5999 | if (sym->old_symbol != NULL) | |
6000 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
6001 | "variables or common blocks", | |
6002 | &(sym->old_symbol->declared_at)); | |
6003 | else | |
6004 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
6005 | "variables or common blocks", &gfc_current_locus); | |
4ee9c684 | 6006 | } |
6007 | ||
c5d33754 | 6008 | if (found_match != MATCH_YES) |
4ee9c684 | 6009 | { |
c5d33754 | 6010 | /* If we haven't found the end-of-statement, look for a suffix. */ |
6011 | suffix_match = gfc_match_suffix (sym, &result); | |
6012 | if (suffix_match == MATCH_YES) | |
6013 | /* Need to get the eos now. */ | |
6014 | found_match = gfc_match_eos (); | |
6015 | else | |
6016 | found_match = suffix_match; | |
4ee9c684 | 6017 | } |
6018 | ||
c5d33754 | 6019 | if(found_match != MATCH_YES) |
6020 | m = MATCH_ERROR; | |
4ee9c684 | 6021 | else |
6022 | { | |
c5d33754 | 6023 | /* Make changes to the symbol. */ |
6024 | m = MATCH_ERROR; | |
8db94b3b | 6025 | |
60e19868 | 6026 | if (!gfc_add_function (&sym->attr, sym->name, NULL)) |
c5d33754 | 6027 | goto cleanup; |
8db94b3b | 6028 | |
76e207a9 | 6029 | if (!gfc_missing_attr (&sym->attr, NULL)) |
c5d33754 | 6030 | goto cleanup; |
4ee9c684 | 6031 | |
76e207a9 | 6032 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
6033 | { | |
6034 | if(!sym->attr.module_procedure) | |
6035 | goto cleanup; | |
6036 | else | |
6037 | gfc_error_check (); | |
6038 | } | |
6039 | ||
8d39570e | 6040 | /* Delay matching the function characteristics until after the |
077932f9 | 6041 | specification block by signalling kind=-1. */ |
8d39570e | 6042 | sym->declared_at = old_loc; |
6043 | if (current_ts.type != BT_UNKNOWN) | |
6044 | current_ts.kind = -1; | |
6045 | else | |
6046 | current_ts.kind = 0; | |
077932f9 | 6047 | |
c5d33754 | 6048 | if (result == NULL) |
6049 | { | |
0477d42d | 6050 | if (current_ts.type != BT_UNKNOWN |
60e19868 | 6051 | && !gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
0477d42d | 6052 | goto cleanup; |
c5d33754 | 6053 | sym->result = sym; |
6054 | } | |
6055 | else | |
6056 | { | |
0477d42d | 6057 | if (current_ts.type != BT_UNKNOWN |
60e19868 | 6058 | && !gfc_add_type (result, ¤t_ts, &gfc_current_locus)) |
0477d42d | 6059 | goto cleanup; |
c5d33754 | 6060 | sym->result = result; |
6061 | } | |
6062 | ||
76e207a9 | 6063 | |
a34926ba | 6064 | /* Warn if this procedure has the same name as an intrinsic. */ |
8290d53f | 6065 | do_warn_intrinsic_shadow (sym, true); |
a34926ba | 6066 | |
c5d33754 | 6067 | return MATCH_YES; |
6068 | } | |
4ee9c684 | 6069 | |
6070 | cleanup: | |
cbb9e6aa | 6071 | gfc_current_locus = old_loc; |
4ee9c684 | 6072 | return m; |
6073 | } | |
6074 | ||
1a9745d2 | 6075 | |
6076 | /* This is mostly a copy of parse.c(add_global_procedure) but modified to | |
6077 | pass the name of the entry, rather than the gfc_current_block name, and | |
6078 | to return false upon finding an existing global entry. */ | |
858f9894 | 6079 | |
6080 | static bool | |
8d779aef | 6081 | add_global_entry (const char *name, const char *binding_label, bool sub, |
6082 | locus *where) | |
858f9894 | 6083 | { |
6084 | gfc_gsymbol *s; | |
8458f4ca | 6085 | enum gfc_symbol_type type; |
858f9894 | 6086 | |
5b11d932 | 6087 | type = sub ? GSYM_SUBROUTINE : GSYM_FUNCTION; |
858f9894 | 6088 | |
da5c730d | 6089 | /* Only in Fortran 2003: For procedures with a binding label also the Fortran |
6090 | name is a global identifier. */ | |
6091 | if (!binding_label || gfc_notification_std (GFC_STD_F2008)) | |
858f9894 | 6092 | { |
da5c730d | 6093 | s = gfc_get_gsymbol (name); |
6094 | ||
6095 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
6096 | { | |
8d779aef | 6097 | gfc_global_used (s, where); |
da5c730d | 6098 | return false; |
6099 | } | |
6100 | else | |
6101 | { | |
6102 | s->type = type; | |
c8b913ab | 6103 | s->sym_name = name; |
8d779aef | 6104 | s->where = *where; |
da5c730d | 6105 | s->defined = 1; |
6106 | s->ns = gfc_current_ns; | |
6107 | } | |
858f9894 | 6108 | } |
da5c730d | 6109 | |
6110 | /* Don't add the symbol multiple times. */ | |
6111 | if (binding_label | |
6112 | && (!gfc_notification_std (GFC_STD_F2008) | |
6113 | || strcmp (name, binding_label) != 0)) | |
6114 | { | |
6115 | s = gfc_get_gsymbol (binding_label); | |
6116 | ||
6117 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
6118 | { | |
8d779aef | 6119 | gfc_global_used (s, where); |
da5c730d | 6120 | return false; |
6121 | } | |
6122 | else | |
6123 | { | |
6124 | s->type = type; | |
c8b913ab | 6125 | s->sym_name = name; |
da5c730d | 6126 | s->binding_label = binding_label; |
8d779aef | 6127 | s->where = *where; |
da5c730d | 6128 | s->defined = 1; |
6129 | s->ns = gfc_current_ns; | |
6130 | } | |
6131 | } | |
6132 | ||
6133 | return true; | |
858f9894 | 6134 | } |
4ee9c684 | 6135 | |
1a9745d2 | 6136 | |
4ee9c684 | 6137 | /* Match an ENTRY statement. */ |
6138 | ||
6139 | match | |
6140 | gfc_match_entry (void) | |
6141 | { | |
1b716045 | 6142 | gfc_symbol *proc; |
6143 | gfc_symbol *result; | |
6144 | gfc_symbol *entry; | |
4ee9c684 | 6145 | char name[GFC_MAX_SYMBOL_LEN + 1]; |
6146 | gfc_compile_state state; | |
6147 | match m; | |
1b716045 | 6148 | gfc_entry_list *el; |
7b5e1acc | 6149 | locus old_loc; |
d77f260f | 6150 | bool module_procedure; |
86f0974b | 6151 | char peek_char; |
6152 | match is_bind_c; | |
4ee9c684 | 6153 | |
6154 | m = gfc_match_name (name); | |
6155 | if (m != MATCH_YES) | |
6156 | return m; | |
6157 | ||
60e19868 | 6158 | if (!gfc_notify_std (GFC_STD_F2008_OBS, "ENTRY statement at %C")) |
a3b81b0f | 6159 | return MATCH_ERROR; |
6160 | ||
1b716045 | 6161 | state = gfc_current_state (); |
ea37f786 | 6162 | if (state != COMP_SUBROUTINE && state != COMP_FUNCTION) |
1b716045 | 6163 | { |
ea37f786 | 6164 | switch (state) |
6165 | { | |
6166 | case COMP_PROGRAM: | |
6167 | gfc_error ("ENTRY statement at %C cannot appear within a PROGRAM"); | |
6168 | break; | |
6169 | case COMP_MODULE: | |
6170 | gfc_error ("ENTRY statement at %C cannot appear within a MODULE"); | |
6171 | break; | |
4b8eb6ca | 6172 | case COMP_SUBMODULE: |
6173 | gfc_error ("ENTRY statement at %C cannot appear within a SUBMODULE"); | |
6174 | break; | |
ea37f786 | 6175 | case COMP_BLOCK_DATA: |
1a9745d2 | 6176 | gfc_error ("ENTRY statement at %C cannot appear within " |
6177 | "a BLOCK DATA"); | |
ea37f786 | 6178 | break; |
6179 | case COMP_INTERFACE: | |
1a9745d2 | 6180 | gfc_error ("ENTRY statement at %C cannot appear within " |
6181 | "an INTERFACE"); | |
ea37f786 | 6182 | break; |
d7cd448a | 6183 | case COMP_STRUCTURE: |
6184 | gfc_error ("ENTRY statement at %C cannot appear within " | |
6185 | "a STRUCTURE block"); | |
6186 | break; | |
ea37f786 | 6187 | case COMP_DERIVED: |
1a9745d2 | 6188 | gfc_error ("ENTRY statement at %C cannot appear within " |
6189 | "a DERIVED TYPE block"); | |
ea37f786 | 6190 | break; |
6191 | case COMP_IF: | |
1a9745d2 | 6192 | gfc_error ("ENTRY statement at %C cannot appear within " |
6193 | "an IF-THEN block"); | |
ea37f786 | 6194 | break; |
6195 | case COMP_DO: | |
55ea8666 | 6196 | case COMP_DO_CONCURRENT: |
1a9745d2 | 6197 | gfc_error ("ENTRY statement at %C cannot appear within " |
6198 | "a DO block"); | |
ea37f786 | 6199 | break; |
6200 | case COMP_SELECT: | |
1a9745d2 | 6201 | gfc_error ("ENTRY statement at %C cannot appear within " |
6202 | "a SELECT block"); | |
ea37f786 | 6203 | break; |
6204 | case COMP_FORALL: | |
1a9745d2 | 6205 | gfc_error ("ENTRY statement at %C cannot appear within " |
6206 | "a FORALL block"); | |
ea37f786 | 6207 | break; |
6208 | case COMP_WHERE: | |
1a9745d2 | 6209 | gfc_error ("ENTRY statement at %C cannot appear within " |
6210 | "a WHERE block"); | |
ea37f786 | 6211 | break; |
6212 | case COMP_CONTAINS: | |
1a9745d2 | 6213 | gfc_error ("ENTRY statement at %C cannot appear within " |
6214 | "a contained subprogram"); | |
ea37f786 | 6215 | break; |
6216 | default: | |
3132dbae | 6217 | gfc_error ("Unexpected ENTRY statement at %C"); |
ea37f786 | 6218 | } |
1b716045 | 6219 | return MATCH_ERROR; |
6220 | } | |
6221 | ||
c286c294 | 6222 | if ((state == COMP_SUBROUTINE || state == COMP_FUNCTION) |
6223 | && gfc_state_stack->previous->state == COMP_INTERFACE) | |
6224 | { | |
6225 | gfc_error ("ENTRY statement at %C cannot appear within an INTERFACE"); | |
6226 | return MATCH_ERROR; | |
6227 | } | |
6228 | ||
d77f260f | 6229 | module_procedure = gfc_current_ns->parent != NULL |
1a9745d2 | 6230 | && gfc_current_ns->parent->proc_name |
6231 | && gfc_current_ns->parent->proc_name->attr.flavor | |
6232 | == FL_MODULE; | |
d77f260f | 6233 | |
1b716045 | 6234 | if (gfc_current_ns->parent != NULL |
6235 | && gfc_current_ns->parent->proc_name | |
d77f260f | 6236 | && !module_procedure) |
1b716045 | 6237 | { |
6238 | gfc_error("ENTRY statement at %C cannot appear in a " | |
6239 | "contained procedure"); | |
6240 | return MATCH_ERROR; | |
6241 | } | |
6242 | ||
d77f260f | 6243 | /* Module function entries need special care in get_proc_name |
6244 | because previous references within the function will have | |
6245 | created symbols attached to the current namespace. */ | |
6246 | if (get_proc_name (name, &entry, | |
6247 | gfc_current_ns->parent != NULL | |
c1e4695a | 6248 | && module_procedure)) |
4ee9c684 | 6249 | return MATCH_ERROR; |
6250 | ||
1b716045 | 6251 | proc = gfc_current_block (); |
6252 | ||
86f0974b | 6253 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
6254 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
6255 | not allowed for procedures. */ | |
6256 | if (entry->attr.is_bind_c == 1) | |
6257 | { | |
6258 | entry->attr.is_bind_c = 0; | |
6259 | if (entry->old_symbol != NULL) | |
6260 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
6261 | "variables or common blocks", | |
6262 | &(entry->old_symbol->declared_at)); | |
6263 | else | |
6264 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
6265 | "variables or common blocks", &gfc_current_locus); | |
6266 | } | |
8db94b3b | 6267 | |
86f0974b | 6268 | /* Check what next non-whitespace character is so we can tell if there |
6269 | is the required parens if we have a BIND(C). */ | |
8d779aef | 6270 | old_loc = gfc_current_locus; |
86f0974b | 6271 | gfc_gobble_whitespace (); |
e0be6f02 | 6272 | peek_char = gfc_peek_ascii_char (); |
86f0974b | 6273 | |
1b716045 | 6274 | if (state == COMP_SUBROUTINE) |
4ee9c684 | 6275 | { |
4ee9c684 | 6276 | m = gfc_match_formal_arglist (entry, 0, 1); |
6277 | if (m != MATCH_YES) | |
6278 | return MATCH_ERROR; | |
6279 | ||
75ae7f6c | 6280 | /* Call gfc_match_bind_c with allow_binding_name = true as ENTRY can |
6281 | never be an internal procedure. */ | |
6282 | is_bind_c = gfc_match_bind_c (entry, true); | |
86f0974b | 6283 | if (is_bind_c == MATCH_ERROR) |
6284 | return MATCH_ERROR; | |
6285 | if (is_bind_c == MATCH_YES) | |
6286 | { | |
6287 | if (peek_char != '(') | |
6288 | { | |
6289 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
6290 | return MATCH_ERROR; | |
6291 | } | |
76e207a9 | 6292 | if (!gfc_add_is_bind_c (&(entry->attr), entry->name, |
60e19868 | 6293 | &(entry->declared_at), 1)) |
86f0974b | 6294 | return MATCH_ERROR; |
6295 | } | |
6296 | ||
da5c730d | 6297 | if (!gfc_current_ns->parent |
8d779aef | 6298 | && !add_global_entry (name, entry->binding_label, true, |
6299 | &old_loc)) | |
da5c730d | 6300 | return MATCH_ERROR; |
6301 | ||
6302 | /* An entry in a subroutine. */ | |
60e19868 | 6303 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
6304 | || !gfc_add_subroutine (&entry->attr, entry->name, NULL)) | |
4ee9c684 | 6305 | return MATCH_ERROR; |
1b716045 | 6306 | } |
6307 | else | |
6308 | { | |
7b5e1acc | 6309 | /* An entry in a function. |
1a9745d2 | 6310 | We need to take special care because writing |
6311 | ENTRY f() | |
6312 | as | |
6313 | ENTRY f | |
6314 | is allowed, whereas | |
6315 | ENTRY f() RESULT (r) | |
6316 | can't be written as | |
6317 | ENTRY f RESULT (r). */ | |
7b5e1acc | 6318 | if (gfc_match_eos () == MATCH_YES) |
6319 | { | |
6320 | gfc_current_locus = old_loc; | |
6321 | /* Match the empty argument list, and add the interface to | |
6322 | the symbol. */ | |
6323 | m = gfc_match_formal_arglist (entry, 0, 1); | |
6324 | } | |
6325 | else | |
6326 | m = gfc_match_formal_arglist (entry, 0, 0); | |
6327 | ||
4ee9c684 | 6328 | if (m != MATCH_YES) |
6329 | return MATCH_ERROR; | |
6330 | ||
4ee9c684 | 6331 | result = NULL; |
6332 | ||
6333 | if (gfc_match_eos () == MATCH_YES) | |
6334 | { | |
60e19868 | 6335 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
6336 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
4ee9c684 | 6337 | return MATCH_ERROR; |
6338 | ||
c6871095 | 6339 | entry->result = entry; |
4ee9c684 | 6340 | } |
6341 | else | |
6342 | { | |
86f0974b | 6343 | m = gfc_match_suffix (entry, &result); |
4ee9c684 | 6344 | if (m == MATCH_NO) |
6345 | gfc_syntax_error (ST_ENTRY); | |
6346 | if (m != MATCH_YES) | |
6347 | return MATCH_ERROR; | |
6348 | ||
86f0974b | 6349 | if (result) |
6350 | { | |
60e19868 | 6351 | if (!gfc_add_result (&result->attr, result->name, NULL) |
6352 | || !gfc_add_entry (&entry->attr, result->name, NULL) | |
6353 | || !gfc_add_function (&entry->attr, result->name, NULL)) | |
86f0974b | 6354 | return MATCH_ERROR; |
6355 | entry->result = result; | |
6356 | } | |
6357 | else | |
6358 | { | |
60e19868 | 6359 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
6360 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
86f0974b | 6361 | return MATCH_ERROR; |
6362 | entry->result = entry; | |
6363 | } | |
4ee9c684 | 6364 | } |
da5c730d | 6365 | |
6366 | if (!gfc_current_ns->parent | |
8d779aef | 6367 | && !add_global_entry (name, entry->binding_label, false, |
6368 | &old_loc)) | |
da5c730d | 6369 | return MATCH_ERROR; |
4ee9c684 | 6370 | } |
6371 | ||
6372 | if (gfc_match_eos () != MATCH_YES) | |
6373 | { | |
6374 | gfc_syntax_error (ST_ENTRY); | |
6375 | return MATCH_ERROR; | |
6376 | } | |
6377 | ||
1b716045 | 6378 | entry->attr.recursive = proc->attr.recursive; |
6379 | entry->attr.elemental = proc->attr.elemental; | |
6380 | entry->attr.pure = proc->attr.pure; | |
4ee9c684 | 6381 | |
1b716045 | 6382 | el = gfc_get_entry_list (); |
6383 | el->sym = entry; | |
6384 | el->next = gfc_current_ns->entries; | |
6385 | gfc_current_ns->entries = el; | |
6386 | if (el->next) | |
6387 | el->id = el->next->id + 1; | |
6388 | else | |
6389 | el->id = 1; | |
4ee9c684 | 6390 | |
1b716045 | 6391 | new_st.op = EXEC_ENTRY; |
6392 | new_st.ext.entry = el; | |
6393 | ||
6394 | return MATCH_YES; | |
4ee9c684 | 6395 | } |
6396 | ||
6397 | ||
6398 | /* Match a subroutine statement, including optional prefixes. */ | |
6399 | ||
6400 | match | |
6401 | gfc_match_subroutine (void) | |
6402 | { | |
6403 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6404 | gfc_symbol *sym; | |
6405 | match m; | |
c5d33754 | 6406 | match is_bind_c; |
6407 | char peek_char; | |
75ae7f6c | 6408 | bool allow_binding_name; |
4ee9c684 | 6409 | |
6410 | if (gfc_current_state () != COMP_NONE | |
6411 | && gfc_current_state () != COMP_INTERFACE | |
6412 | && gfc_current_state () != COMP_CONTAINS) | |
6413 | return MATCH_NO; | |
6414 | ||
077932f9 | 6415 | m = gfc_match_prefix (NULL); |
4ee9c684 | 6416 | if (m != MATCH_YES) |
6417 | return m; | |
6418 | ||
6419 | m = gfc_match ("subroutine% %n", name); | |
6420 | if (m != MATCH_YES) | |
6421 | return m; | |
6422 | ||
d77f260f | 6423 | if (get_proc_name (name, &sym, false)) |
4ee9c684 | 6424 | return MATCH_ERROR; |
1e057e9b | 6425 | |
22c1d301 | 6426 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if |
293d72e0 | 6427 | the symbol existed before. */ |
22c1d301 | 6428 | sym->declared_at = gfc_current_locus; |
6429 | ||
4b8eb6ca | 6430 | if (current_attr.module_procedure) |
6431 | sym->attr.module_procedure = 1; | |
6432 | ||
60e19868 | 6433 | if (add_hidden_procptr_result (sym)) |
1e057e9b | 6434 | sym = sym->result; |
6435 | ||
4ee9c684 | 6436 | gfc_new_block = sym; |
6437 | ||
c5d33754 | 6438 | /* Check what next non-whitespace character is so we can tell if there |
86f0974b | 6439 | is the required parens if we have a BIND(C). */ |
c5d33754 | 6440 | gfc_gobble_whitespace (); |
e0be6f02 | 6441 | peek_char = gfc_peek_ascii_char (); |
8db94b3b | 6442 | |
60e19868 | 6443 | if (!gfc_add_subroutine (&sym->attr, sym->name, NULL)) |
4ee9c684 | 6444 | return MATCH_ERROR; |
6445 | ||
6446 | if (gfc_match_formal_arglist (sym, 0, 1) != MATCH_YES) | |
6447 | return MATCH_ERROR; | |
6448 | ||
c5d33754 | 6449 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
6450 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
6451 | not allowed for procedures. */ | |
6452 | if (sym->attr.is_bind_c == 1) | |
6453 | { | |
6454 | sym->attr.is_bind_c = 0; | |
6455 | if (sym->old_symbol != NULL) | |
6456 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
6457 | "variables or common blocks", | |
6458 | &(sym->old_symbol->declared_at)); | |
6459 | else | |
6460 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
6461 | "variables or common blocks", &gfc_current_locus); | |
6462 | } | |
75ae7f6c | 6463 | |
6464 | /* C binding names are not allowed for internal procedures. */ | |
6465 | if (gfc_current_state () == COMP_CONTAINS | |
6466 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
6467 | allow_binding_name = false; | |
6468 | else | |
6469 | allow_binding_name = true; | |
6470 | ||
c5d33754 | 6471 | /* Here, we are just checking if it has the bind(c) attribute, and if |
6472 | so, then we need to make sure it's all correct. If it doesn't, | |
6473 | we still need to continue matching the rest of the subroutine line. */ | |
75ae7f6c | 6474 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
c5d33754 | 6475 | if (is_bind_c == MATCH_ERROR) |
6476 | { | |
6477 | /* There was an attempt at the bind(c), but it was wrong. An | |
6478 | error message should have been printed w/in the gfc_match_bind_c | |
6479 | so here we'll just return the MATCH_ERROR. */ | |
6480 | return MATCH_ERROR; | |
6481 | } | |
6482 | ||
6483 | if (is_bind_c == MATCH_YES) | |
6484 | { | |
75ae7f6c | 6485 | /* The following is allowed in the Fortran 2008 draft. */ |
4518e961 | 6486 | if (gfc_current_state () == COMP_CONTAINS |
75ae7f6c | 6487 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
60e19868 | 6488 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
6489 | "at %L may not be specified for an internal " | |
6490 | "procedure", &gfc_current_locus)) | |
75ae7f6c | 6491 | return MATCH_ERROR; |
6492 | ||
c5d33754 | 6493 | if (peek_char != '(') |
6494 | { | |
6495 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
6496 | return MATCH_ERROR; | |
6497 | } | |
76e207a9 | 6498 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, |
60e19868 | 6499 | &(sym->declared_at), 1)) |
c5d33754 | 6500 | return MATCH_ERROR; |
6501 | } | |
8db94b3b | 6502 | |
4ee9c684 | 6503 | if (gfc_match_eos () != MATCH_YES) |
6504 | { | |
6505 | gfc_syntax_error (ST_SUBROUTINE); | |
6506 | return MATCH_ERROR; | |
6507 | } | |
6508 | ||
60e19868 | 6509 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
76e207a9 | 6510 | { |
6511 | if(!sym->attr.module_procedure) | |
6512 | return MATCH_ERROR; | |
6513 | else | |
6514 | gfc_error_check (); | |
6515 | } | |
4ee9c684 | 6516 | |
a34926ba | 6517 | /* Warn if it has the same name as an intrinsic. */ |
8290d53f | 6518 | do_warn_intrinsic_shadow (sym, false); |
a34926ba | 6519 | |
4ee9c684 | 6520 | return MATCH_YES; |
6521 | } | |
6522 | ||
6523 | ||
7136063b | 6524 | /* Check that the NAME identifier in a BIND attribute or statement |
6525 | is conform to C identifier rules. */ | |
6526 | ||
6527 | match | |
6528 | check_bind_name_identifier (char **name) | |
6529 | { | |
6530 | char *n = *name, *p; | |
6531 | ||
6532 | /* Remove leading spaces. */ | |
6533 | while (*n == ' ') | |
6534 | n++; | |
6535 | ||
6536 | /* On an empty string, free memory and set name to NULL. */ | |
6537 | if (*n == '\0') | |
6538 | { | |
6539 | free (*name); | |
6540 | *name = NULL; | |
6541 | return MATCH_YES; | |
6542 | } | |
6543 | ||
6544 | /* Remove trailing spaces. */ | |
6545 | p = n + strlen(n) - 1; | |
6546 | while (*p == ' ') | |
6547 | *(p--) = '\0'; | |
6548 | ||
6549 | /* Insert the identifier into the symbol table. */ | |
6550 | p = xstrdup (n); | |
6551 | free (*name); | |
6552 | *name = p; | |
6553 | ||
6554 | /* Now check that identifier is valid under C rules. */ | |
6555 | if (ISDIGIT (*p)) | |
6556 | { | |
6557 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
6558 | return MATCH_ERROR; | |
6559 | } | |
6560 | ||
6561 | for (; *p; p++) | |
6562 | if (!(ISALNUM (*p) || *p == '_' || *p == '$')) | |
6563 | { | |
6564 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
6565 | return MATCH_ERROR; | |
6566 | } | |
6567 | ||
6568 | return MATCH_YES; | |
6569 | } | |
6570 | ||
6571 | ||
c5d33754 | 6572 | /* Match a BIND(C) specifier, with the optional 'name=' specifier if |
6573 | given, and set the binding label in either the given symbol (if not | |
a0527218 | 6574 | NULL), or in the current_ts. The symbol may be NULL because we may |
c5d33754 | 6575 | encounter the BIND(C) before the declaration itself. Return |
6576 | MATCH_NO if what we're looking at isn't a BIND(C) specifier, | |
6577 | MATCH_ERROR if it is a BIND(C) clause but an error was encountered, | |
6578 | or MATCH_YES if the specifier was correct and the binding label and | |
6579 | bind(c) fields were set correctly for the given symbol or the | |
75ae7f6c | 6580 | current_ts. If allow_binding_name is false, no binding name may be |
6581 | given. */ | |
c5d33754 | 6582 | |
6583 | match | |
75ae7f6c | 6584 | gfc_match_bind_c (gfc_symbol *sym, bool allow_binding_name) |
c5d33754 | 6585 | { |
7136063b | 6586 | char *binding_label = NULL; |
6587 | gfc_expr *e = NULL; | |
c5d33754 | 6588 | |
8db94b3b | 6589 | /* Initialize the flag that specifies whether we encountered a NAME= |
c5d33754 | 6590 | specifier or not. */ |
6591 | has_name_equals = 0; | |
6592 | ||
c5d33754 | 6593 | /* This much we have to be able to match, in this order, if |
6594 | there is a bind(c) label. */ | |
6595 | if (gfc_match (" bind ( c ") != MATCH_YES) | |
6596 | return MATCH_NO; | |
6597 | ||
6598 | /* Now see if there is a binding label, or if we've reached the | |
6599 | end of the bind(c) attribute without one. */ | |
6600 | if (gfc_match_char (',') == MATCH_YES) | |
6601 | { | |
6602 | if (gfc_match (" name = ") != MATCH_YES) | |
6603 | { | |
6604 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
6605 | "at %C"); | |
6606 | /* should give an error message here */ | |
6607 | return MATCH_ERROR; | |
6608 | } | |
6609 | ||
6610 | has_name_equals = 1; | |
6611 | ||
7136063b | 6612 | if (gfc_match_init_expr (&e) != MATCH_YES) |
6613 | { | |
6614 | gfc_free_expr (e); | |
6615 | return MATCH_ERROR; | |
6616 | } | |
8db94b3b | 6617 | |
7136063b | 6618 | if (!gfc_simplify_expr(e, 0)) |
c5d33754 | 6619 | { |
7136063b | 6620 | gfc_error ("NAME= specifier at %C should be a constant expression"); |
6621 | gfc_free_expr (e); | |
6622 | return MATCH_ERROR; | |
c5d33754 | 6623 | } |
7136063b | 6624 | |
6625 | if (e->expr_type != EXPR_CONSTANT || e->ts.type != BT_CHARACTER | |
6626 | || e->ts.kind != gfc_default_character_kind || e->rank != 0) | |
c5d33754 | 6627 | { |
7136063b | 6628 | gfc_error ("NAME= specifier at %C should be a scalar of " |
6629 | "default character kind"); | |
6630 | gfc_free_expr(e); | |
6631 | return MATCH_ERROR; | |
c5d33754 | 6632 | } |
7136063b | 6633 | |
6634 | // Get a C string from the Fortran string constant | |
6635 | binding_label = gfc_widechar_to_char (e->value.character.string, | |
6636 | e->value.character.length); | |
6637 | gfc_free_expr(e); | |
6638 | ||
6639 | // Check that it is valid (old gfc_match_name_C) | |
6640 | if (check_bind_name_identifier (&binding_label) != MATCH_YES) | |
6641 | return MATCH_ERROR; | |
6642 | } | |
c5d33754 | 6643 | |
6644 | /* Get the required right paren. */ | |
6645 | if (gfc_match_char (')') != MATCH_YES) | |
6646 | { | |
6647 | gfc_error ("Missing closing paren for binding label at %C"); | |
6648 | return MATCH_ERROR; | |
6649 | } | |
6650 | ||
75ae7f6c | 6651 | if (has_name_equals && !allow_binding_name) |
6652 | { | |
6653 | gfc_error ("No binding name is allowed in BIND(C) at %C"); | |
6654 | return MATCH_ERROR; | |
6655 | } | |
6656 | ||
6657 | if (has_name_equals && sym != NULL && sym->attr.dummy) | |
6658 | { | |
6659 | gfc_error ("For dummy procedure %s, no binding name is " | |
6660 | "allowed in BIND(C) at %C", sym->name); | |
6661 | return MATCH_ERROR; | |
6662 | } | |
6663 | ||
6664 | ||
c5d33754 | 6665 | /* Save the binding label to the symbol. If sym is null, we're |
6666 | probably matching the typespec attributes of a declaration and | |
6667 | haven't gotten the name yet, and therefore, no symbol yet. */ | |
7b2060ba | 6668 | if (binding_label) |
c5d33754 | 6669 | { |
6670 | if (sym != NULL) | |
7b2060ba | 6671 | sym->binding_label = binding_label; |
c5d33754 | 6672 | else |
7b2060ba | 6673 | curr_binding_label = binding_label; |
c5d33754 | 6674 | } |
75ae7f6c | 6675 | else if (allow_binding_name) |
c5d33754 | 6676 | { |
6677 | /* No binding label, but if symbol isn't null, we | |
75ae7f6c | 6678 | can set the label for it here. |
6679 | If name="" or allow_binding_name is false, no C binding name is | |
293d72e0 | 6680 | created. */ |
c5d33754 | 6681 | if (sym != NULL && sym->name != NULL && has_name_equals == 0) |
7b2060ba | 6682 | sym->binding_label = IDENTIFIER_POINTER (get_identifier (sym->name)); |
c5d33754 | 6683 | } |
94fa7146 | 6684 | |
5cf92482 | 6685 | if (has_name_equals && gfc_current_state () == COMP_INTERFACE |
6686 | && current_interface.type == INTERFACE_ABSTRACT) | |
94fa7146 | 6687 | { |
6688 | gfc_error ("NAME not allowed on BIND(C) for ABSTRACT INTERFACE at %C"); | |
6689 | return MATCH_ERROR; | |
6690 | } | |
6691 | ||
c5d33754 | 6692 | return MATCH_YES; |
6693 | } | |
6694 | ||
6695 | ||
231e961a | 6696 | /* Return nonzero if we're currently compiling a contained procedure. */ |
c0985832 | 6697 | |
6698 | static int | |
6699 | contained_procedure (void) | |
6700 | { | |
1c343287 | 6701 | gfc_state_data *s = gfc_state_stack; |
c0985832 | 6702 | |
1c343287 | 6703 | if ((s->state == COMP_SUBROUTINE || s->state == COMP_FUNCTION) |
6704 | && s->previous != NULL && s->previous->state == COMP_CONTAINS) | |
6705 | return 1; | |
c0985832 | 6706 | |
6707 | return 0; | |
6708 | } | |
6709 | ||
e14bee04 | 6710 | /* Set the kind of each enumerator. The kind is selected such that it is |
3b6a4b41 | 6711 | interoperable with the corresponding C enumeration type, making |
6712 | sure that -fshort-enums is honored. */ | |
6713 | ||
6714 | static void | |
6715 | set_enum_kind(void) | |
6716 | { | |
6717 | enumerator_history *current_history = NULL; | |
6718 | int kind; | |
6719 | int i; | |
6720 | ||
6721 | if (max_enum == NULL || enum_history == NULL) | |
6722 | return; | |
6723 | ||
6f092e31 | 6724 | if (!flag_short_enums) |
e14bee04 | 6725 | return; |
6726 | ||
3b6a4b41 | 6727 | i = 0; |
6728 | do | |
6729 | { | |
6730 | kind = gfc_integer_kinds[i++].kind; | |
6731 | } | |
e14bee04 | 6732 | while (kind < gfc_c_int_kind |
3b6a4b41 | 6733 | && gfc_check_integer_range (max_enum->initializer->value.integer, |
6734 | kind) != ARITH_OK); | |
6735 | ||
6736 | current_history = enum_history; | |
6737 | while (current_history != NULL) | |
6738 | { | |
6739 | current_history->sym->ts.kind = kind; | |
6740 | current_history = current_history->next; | |
6741 | } | |
6742 | } | |
6743 | ||
1a9745d2 | 6744 | |
4ee9c684 | 6745 | /* Match any of the various end-block statements. Returns the type of |
6a7084d7 | 6746 | END to the caller. The END INTERFACE, END IF, END DO, END SELECT |
6747 | and END BLOCK statements cannot be replaced by a single END statement. */ | |
4ee9c684 | 6748 | |
6749 | match | |
1a9745d2 | 6750 | gfc_match_end (gfc_statement *st) |
4ee9c684 | 6751 | { |
6752 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6753 | gfc_compile_state state; | |
6754 | locus old_loc; | |
6755 | const char *block_name; | |
6756 | const char *target; | |
c0985832 | 6757 | int eos_ok; |
4ee9c684 | 6758 | match m; |
9e5e87d9 | 6759 | gfc_namespace *parent_ns, *ns, *prev_ns; |
6760 | gfc_namespace **nsp; | |
4b8eb6ca | 6761 | bool abreviated_modproc_decl; |
cc7124a6 | 6762 | bool got_matching_end = false; |
4ee9c684 | 6763 | |
cbb9e6aa | 6764 | old_loc = gfc_current_locus; |
4ee9c684 | 6765 | if (gfc_match ("end") != MATCH_YES) |
6766 | return MATCH_NO; | |
6767 | ||
6768 | state = gfc_current_state (); | |
1a9745d2 | 6769 | block_name = gfc_current_block () == NULL |
6770 | ? NULL : gfc_current_block ()->name; | |
4ee9c684 | 6771 | |
d18a512a | 6772 | switch (state) |
4ee9c684 | 6773 | { |
d18a512a | 6774 | case COMP_ASSOCIATE: |
6775 | case COMP_BLOCK: | |
5ebb0bc6 | 6776 | if (!strncmp (block_name, "block@", strlen("block@"))) |
d18a512a | 6777 | block_name = NULL; |
6778 | break; | |
6779 | ||
6780 | case COMP_CONTAINS: | |
6781 | case COMP_DERIVED_CONTAINS: | |
4ee9c684 | 6782 | state = gfc_state_stack->previous->state; |
1a9745d2 | 6783 | block_name = gfc_state_stack->previous->sym == NULL |
6784 | ? NULL : gfc_state_stack->previous->sym->name; | |
d18a512a | 6785 | break; |
6786 | ||
6787 | default: | |
6788 | break; | |
4ee9c684 | 6789 | } |
6790 | ||
4b8eb6ca | 6791 | abreviated_modproc_decl |
6792 | = gfc_current_block () | |
6793 | && gfc_current_block ()->abr_modproc_decl; | |
6794 | ||
4ee9c684 | 6795 | switch (state) |
6796 | { | |
6797 | case COMP_NONE: | |
6798 | case COMP_PROGRAM: | |
6799 | *st = ST_END_PROGRAM; | |
6800 | target = " program"; | |
c0985832 | 6801 | eos_ok = 1; |
4ee9c684 | 6802 | break; |
6803 | ||
6804 | case COMP_SUBROUTINE: | |
6805 | *st = ST_END_SUBROUTINE; | |
4b8eb6ca | 6806 | if (!abreviated_modproc_decl) |
4ee9c684 | 6807 | target = " subroutine"; |
4b8eb6ca | 6808 | else |
6809 | target = " procedure"; | |
c0985832 | 6810 | eos_ok = !contained_procedure (); |
4ee9c684 | 6811 | break; |
6812 | ||
6813 | case COMP_FUNCTION: | |
6814 | *st = ST_END_FUNCTION; | |
4b8eb6ca | 6815 | if (!abreviated_modproc_decl) |
4ee9c684 | 6816 | target = " function"; |
4b8eb6ca | 6817 | else |
6818 | target = " procedure"; | |
c0985832 | 6819 | eos_ok = !contained_procedure (); |
4ee9c684 | 6820 | break; |
6821 | ||
6822 | case COMP_BLOCK_DATA: | |
6823 | *st = ST_END_BLOCK_DATA; | |
6824 | target = " block data"; | |
c0985832 | 6825 | eos_ok = 1; |
4ee9c684 | 6826 | break; |
6827 | ||
6828 | case COMP_MODULE: | |
6829 | *st = ST_END_MODULE; | |
6830 | target = " module"; | |
c0985832 | 6831 | eos_ok = 1; |
4ee9c684 | 6832 | break; |
6833 | ||
4b8eb6ca | 6834 | case COMP_SUBMODULE: |
6835 | *st = ST_END_SUBMODULE; | |
6836 | target = " submodule"; | |
6837 | eos_ok = 1; | |
6838 | break; | |
6839 | ||
4ee9c684 | 6840 | case COMP_INTERFACE: |
6841 | *st = ST_END_INTERFACE; | |
6842 | target = " interface"; | |
c0985832 | 6843 | eos_ok = 0; |
4ee9c684 | 6844 | break; |
6845 | ||
d7cd448a | 6846 | case COMP_MAP: |
6847 | *st = ST_END_MAP; | |
6848 | target = " map"; | |
6849 | eos_ok = 0; | |
6850 | break; | |
6851 | ||
6852 | case COMP_UNION: | |
6853 | *st = ST_END_UNION; | |
6854 | target = " union"; | |
6855 | eos_ok = 0; | |
6856 | break; | |
6857 | ||
6858 | case COMP_STRUCTURE: | |
6859 | *st = ST_END_STRUCTURE; | |
6860 | target = " structure"; | |
6861 | eos_ok = 0; | |
6862 | break; | |
6863 | ||
4ee9c684 | 6864 | case COMP_DERIVED: |
7fd88f6e | 6865 | case COMP_DERIVED_CONTAINS: |
4ee9c684 | 6866 | *st = ST_END_TYPE; |
6867 | target = " type"; | |
c0985832 | 6868 | eos_ok = 0; |
4ee9c684 | 6869 | break; |
6870 | ||
d18a512a | 6871 | case COMP_ASSOCIATE: |
6872 | *st = ST_END_ASSOCIATE; | |
6873 | target = " associate"; | |
6874 | eos_ok = 0; | |
6875 | break; | |
6876 | ||
6a7084d7 | 6877 | case COMP_BLOCK: |
6878 | *st = ST_END_BLOCK; | |
6879 | target = " block"; | |
6880 | eos_ok = 0; | |
6881 | break; | |
6882 | ||
4ee9c684 | 6883 | case COMP_IF: |
6884 | *st = ST_ENDIF; | |
6885 | target = " if"; | |
c0985832 | 6886 | eos_ok = 0; |
4ee9c684 | 6887 | break; |
6888 | ||
6889 | case COMP_DO: | |
55ea8666 | 6890 | case COMP_DO_CONCURRENT: |
4ee9c684 | 6891 | *st = ST_ENDDO; |
6892 | target = " do"; | |
c0985832 | 6893 | eos_ok = 0; |
4ee9c684 | 6894 | break; |
6895 | ||
c6cd3066 | 6896 | case COMP_CRITICAL: |
6897 | *st = ST_END_CRITICAL; | |
6898 | target = " critical"; | |
6899 | eos_ok = 0; | |
6900 | break; | |
6901 | ||
4ee9c684 | 6902 | case COMP_SELECT: |
1de1b1a9 | 6903 | case COMP_SELECT_TYPE: |
4ee9c684 | 6904 | *st = ST_END_SELECT; |
6905 | target = " select"; | |
c0985832 | 6906 | eos_ok = 0; |
4ee9c684 | 6907 | break; |
6908 | ||
6909 | case COMP_FORALL: | |
6910 | *st = ST_END_FORALL; | |
6911 | target = " forall"; | |
c0985832 | 6912 | eos_ok = 0; |
4ee9c684 | 6913 | break; |
6914 | ||
6915 | case COMP_WHERE: | |
6916 | *st = ST_END_WHERE; | |
6917 | target = " where"; | |
c0985832 | 6918 | eos_ok = 0; |
4ee9c684 | 6919 | break; |
6920 | ||
3b6a4b41 | 6921 | case COMP_ENUM: |
6922 | *st = ST_END_ENUM; | |
6923 | target = " enum"; | |
6924 | eos_ok = 0; | |
6925 | last_initializer = NULL; | |
6926 | set_enum_kind (); | |
6927 | gfc_free_enum_history (); | |
6928 | break; | |
6929 | ||
4ee9c684 | 6930 | default: |
6931 | gfc_error ("Unexpected END statement at %C"); | |
6932 | goto cleanup; | |
6933 | } | |
6934 | ||
8d779aef | 6935 | old_loc = gfc_current_locus; |
4ee9c684 | 6936 | if (gfc_match_eos () == MATCH_YES) |
6937 | { | |
4b20e9cf | 6938 | if (!eos_ok && (*st == ST_END_SUBROUTINE || *st == ST_END_FUNCTION)) |
6939 | { | |
60e19868 | 6940 | if (!gfc_notify_std (GFC_STD_F2008, "END statement " |
76e207a9 | 6941 | "instead of %s statement at %L", |
4b8eb6ca | 6942 | abreviated_modproc_decl ? "END PROCEDURE" |
6943 | : gfc_ascii_statement(*st), &old_loc)) | |
4b20e9cf | 6944 | goto cleanup; |
6945 | } | |
6946 | else if (!eos_ok) | |
4ee9c684 | 6947 | { |
f6d0e37a | 6948 | /* We would have required END [something]. */ |
d197c9ee | 6949 | gfc_error ("%s statement expected at %L", |
6950 | gfc_ascii_statement (*st), &old_loc); | |
4ee9c684 | 6951 | goto cleanup; |
6952 | } | |
6953 | ||
6954 | return MATCH_YES; | |
6955 | } | |
6956 | ||
6957 | /* Verify that we've got the sort of end-block that we're expecting. */ | |
6958 | if (gfc_match (target) != MATCH_YES) | |
6959 | { | |
4b8eb6ca | 6960 | gfc_error ("Expecting %s statement at %L", abreviated_modproc_decl |
6961 | ? "END PROCEDURE" : gfc_ascii_statement(*st), &old_loc); | |
4ee9c684 | 6962 | goto cleanup; |
6963 | } | |
cc7124a6 | 6964 | else |
6965 | got_matching_end = true; | |
4ee9c684 | 6966 | |
8d779aef | 6967 | old_loc = gfc_current_locus; |
4ee9c684 | 6968 | /* If we're at the end, make sure a block name wasn't required. */ |
6969 | if (gfc_match_eos () == MATCH_YES) | |
6970 | { | |
6971 | ||
0d0ce415 | 6972 | if (*st != ST_ENDDO && *st != ST_ENDIF && *st != ST_END_SELECT |
c6cd3066 | 6973 | && *st != ST_END_FORALL && *st != ST_END_WHERE && *st != ST_END_BLOCK |
d18a512a | 6974 | && *st != ST_END_ASSOCIATE && *st != ST_END_CRITICAL) |
4ee9c684 | 6975 | return MATCH_YES; |
6976 | ||
6a7084d7 | 6977 | if (!block_name) |
4ee9c684 | 6978 | return MATCH_YES; |
6979 | ||
716da296 | 6980 | gfc_error ("Expected block name of %qs in %s statement at %L", |
8d779aef | 6981 | block_name, gfc_ascii_statement (*st), &old_loc); |
4ee9c684 | 6982 | |
6983 | return MATCH_ERROR; | |
6984 | } | |
6985 | ||
6986 | /* END INTERFACE has a special handler for its several possible endings. */ | |
6987 | if (*st == ST_END_INTERFACE) | |
6988 | return gfc_match_end_interface (); | |
6989 | ||
f6d0e37a | 6990 | /* We haven't hit the end of statement, so what is left must be an |
6991 | end-name. */ | |
4ee9c684 | 6992 | m = gfc_match_space (); |
6993 | if (m == MATCH_YES) | |
6994 | m = gfc_match_name (name); | |
6995 | ||
6996 | if (m == MATCH_NO) | |
6997 | gfc_error ("Expected terminating name at %C"); | |
6998 | if (m != MATCH_YES) | |
6999 | goto cleanup; | |
7000 | ||
7001 | if (block_name == NULL) | |
7002 | goto syntax; | |
7003 | ||
df8f279f | 7004 | /* We have to pick out the declared submodule name from the composite |
7005 | required by F2008:11.2.3 para 2, which ends in the declared name. */ | |
7006 | if (state == COMP_SUBMODULE) | |
7007 | block_name = strchr (block_name, '.') + 1; | |
7008 | ||
1e057e9b | 7009 | if (strcmp (name, block_name) != 0 && strcmp (block_name, "ppr@") != 0) |
4ee9c684 | 7010 | { |
716da296 | 7011 | gfc_error ("Expected label %qs for %s statement at %C", block_name, |
4ee9c684 | 7012 | gfc_ascii_statement (*st)); |
7013 | goto cleanup; | |
7014 | } | |
1e057e9b | 7015 | /* Procedure pointer as function result. */ |
7016 | else if (strcmp (block_name, "ppr@") == 0 | |
7017 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) != 0) | |
7018 | { | |
716da296 | 7019 | gfc_error ("Expected label %qs for %s statement at %C", |
1e057e9b | 7020 | gfc_current_block ()->ns->proc_name->name, |
7021 | gfc_ascii_statement (*st)); | |
7022 | goto cleanup; | |
7023 | } | |
4ee9c684 | 7024 | |
7025 | if (gfc_match_eos () == MATCH_YES) | |
7026 | return MATCH_YES; | |
7027 | ||
7028 | syntax: | |
7029 | gfc_syntax_error (*st); | |
7030 | ||
7031 | cleanup: | |
cbb9e6aa | 7032 | gfc_current_locus = old_loc; |
9e5e87d9 | 7033 | |
7034 | /* If we are missing an END BLOCK, we created a half-ready namespace. | |
7035 | Remove it from the parent namespace's sibling list. */ | |
7036 | ||
cc7124a6 | 7037 | while (state == COMP_BLOCK && !got_matching_end) |
9e5e87d9 | 7038 | { |
7039 | parent_ns = gfc_current_ns->parent; | |
7040 | ||
7041 | nsp = &(gfc_state_stack->previous->tail->ext.block.ns); | |
7042 | ||
7043 | prev_ns = NULL; | |
7044 | ns = *nsp; | |
7045 | while (ns) | |
7046 | { | |
7047 | if (ns == gfc_current_ns) | |
7048 | { | |
7049 | if (prev_ns == NULL) | |
7050 | *nsp = NULL; | |
7051 | else | |
7052 | prev_ns->sibling = ns->sibling; | |
7053 | } | |
7054 | prev_ns = ns; | |
7055 | ns = ns->sibling; | |
7056 | } | |
cc7124a6 | 7057 | |
9e5e87d9 | 7058 | gfc_free_namespace (gfc_current_ns); |
7059 | gfc_current_ns = parent_ns; | |
8097c1a6 | 7060 | gfc_state_stack = gfc_state_stack->previous; |
7061 | state = gfc_current_state (); | |
9e5e87d9 | 7062 | } |
7063 | ||
4ee9c684 | 7064 | return MATCH_ERROR; |
7065 | } | |
7066 | ||
7067 | ||
7068 | ||
7069 | /***************** Attribute declaration statements ****************/ | |
7070 | ||
7071 | /* Set the attribute of a single variable. */ | |
7072 | ||
7073 | static match | |
7074 | attr_decl1 (void) | |
7075 | { | |
7076 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7077 | gfc_array_spec *as; | |
75e5ecf3 | 7078 | |
7079 | /* Workaround -Wmaybe-uninitialized false positive during | |
7080 | profiledbootstrap by initializing them. */ | |
7081 | gfc_symbol *sym = NULL; | |
4ee9c684 | 7082 | locus var_locus; |
7083 | match m; | |
7084 | ||
7085 | as = NULL; | |
7086 | ||
7087 | m = gfc_match_name (name); | |
7088 | if (m != MATCH_YES) | |
7089 | goto cleanup; | |
7090 | ||
36b0a1b0 | 7091 | if (find_special (name, &sym, false)) |
4ee9c684 | 7092 | return MATCH_ERROR; |
7093 | ||
60e19868 | 7094 | if (!check_function_name (name)) |
f3e89339 | 7095 | { |
7096 | m = MATCH_ERROR; | |
7097 | goto cleanup; | |
7098 | } | |
8db94b3b | 7099 | |
cbb9e6aa | 7100 | var_locus = gfc_current_locus; |
4ee9c684 | 7101 | |
7102 | /* Deal with possible array specification for certain attributes. */ | |
7103 | if (current_attr.dimension | |
aff518b0 | 7104 | || current_attr.codimension |
4ee9c684 | 7105 | || current_attr.allocatable |
7106 | || current_attr.pointer | |
7107 | || current_attr.target) | |
7108 | { | |
aff518b0 | 7109 | m = gfc_match_array_spec (&as, !current_attr.codimension, |
7110 | !current_attr.dimension | |
7111 | && !current_attr.pointer | |
7112 | && !current_attr.target); | |
4ee9c684 | 7113 | if (m == MATCH_ERROR) |
7114 | goto cleanup; | |
7115 | ||
7116 | if (current_attr.dimension && m == MATCH_NO) | |
7117 | { | |
1a9745d2 | 7118 | gfc_error ("Missing array specification at %L in DIMENSION " |
7119 | "statement", &var_locus); | |
4ee9c684 | 7120 | m = MATCH_ERROR; |
7121 | goto cleanup; | |
7122 | } | |
7123 | ||
13aebeb0 | 7124 | if (current_attr.dimension && sym->value) |
7125 | { | |
7126 | gfc_error ("Dimensions specified for %s at %L after its " | |
7127 | "initialisation", sym->name, &var_locus); | |
7128 | m = MATCH_ERROR; | |
7129 | goto cleanup; | |
7130 | } | |
7131 | ||
aff518b0 | 7132 | if (current_attr.codimension && m == MATCH_NO) |
7133 | { | |
7134 | gfc_error ("Missing array specification at %L in CODIMENSION " | |
7135 | "statement", &var_locus); | |
7136 | m = MATCH_ERROR; | |
7137 | goto cleanup; | |
7138 | } | |
7139 | ||
4ee9c684 | 7140 | if ((current_attr.allocatable || current_attr.pointer) |
7141 | && (m == MATCH_YES) && (as->type != AS_DEFERRED)) | |
7142 | { | |
1a9745d2 | 7143 | gfc_error ("Array specification must be deferred at %L", &var_locus); |
4ee9c684 | 7144 | m = MATCH_ERROR; |
7145 | goto cleanup; | |
7146 | } | |
7147 | } | |
7148 | ||
b3704193 | 7149 | /* Update symbol table. DIMENSION attribute is set in |
7150 | gfc_set_array_spec(). For CLASS variables, this must be applied | |
607ae689 | 7151 | to the first component, or '_data' field. */ |
a33fbb6f | 7152 | if (sym->ts.type == BT_CLASS && sym->ts.u.derived->attr.is_class) |
4ee9c684 | 7153 | { |
60e19868 | 7154 | if (!gfc_copy_attr (&CLASS_DATA(sym)->attr, ¤t_attr, &var_locus)) |
b3704193 | 7155 | { |
7156 | m = MATCH_ERROR; | |
7157 | goto cleanup; | |
7158 | } | |
b3704193 | 7159 | } |
7160 | else | |
7161 | { | |
aff518b0 | 7162 | if (current_attr.dimension == 0 && current_attr.codimension == 0 |
60e19868 | 7163 | && !gfc_copy_attr (&sym->attr, ¤t_attr, &var_locus)) |
b3704193 | 7164 | { |
7165 | m = MATCH_ERROR; | |
7166 | goto cleanup; | |
7167 | } | |
4ee9c684 | 7168 | } |
8db94b3b | 7169 | |
fa102e56 | 7170 | if (sym->ts.type == BT_CLASS |
e8393d49 | 7171 | && !gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as)) |
29dae2bf | 7172 | { |
7173 | m = MATCH_ERROR; | |
7174 | goto cleanup; | |
7175 | } | |
4ee9c684 | 7176 | |
60e19868 | 7177 | if (!gfc_set_array_spec (sym, as, &var_locus)) |
4ee9c684 | 7178 | { |
7179 | m = MATCH_ERROR; | |
7180 | goto cleanup; | |
7181 | } | |
e14bee04 | 7182 | |
b549d2a5 | 7183 | if (sym->attr.cray_pointee && sym->as != NULL) |
7184 | { | |
7185 | /* Fix the array spec. */ | |
8db94b3b | 7186 | m = gfc_mod_pointee_as (sym->as); |
b549d2a5 | 7187 | if (m == MATCH_ERROR) |
7188 | goto cleanup; | |
7189 | } | |
4ee9c684 | 7190 | |
60e19868 | 7191 | if (!gfc_add_attribute (&sym->attr, &var_locus)) |
14efb9b7 | 7192 | { |
7193 | m = MATCH_ERROR; | |
7194 | goto cleanup; | |
7195 | } | |
7196 | ||
4ee9c684 | 7197 | if ((current_attr.external || current_attr.intrinsic) |
7198 | && sym->attr.flavor != FL_PROCEDURE | |
60e19868 | 7199 | && !gfc_add_flavor (&sym->attr, FL_PROCEDURE, sym->name, NULL)) |
4ee9c684 | 7200 | { |
7201 | m = MATCH_ERROR; | |
7202 | goto cleanup; | |
7203 | } | |
7204 | ||
1e057e9b | 7205 | add_hidden_procptr_result (sym); |
7206 | ||
4ee9c684 | 7207 | return MATCH_YES; |
7208 | ||
7209 | cleanup: | |
7210 | gfc_free_array_spec (as); | |
7211 | return m; | |
7212 | } | |
7213 | ||
7214 | ||
7215 | /* Generic attribute declaration subroutine. Used for attributes that | |
7216 | just have a list of names. */ | |
7217 | ||
7218 | static match | |
7219 | attr_decl (void) | |
7220 | { | |
7221 | match m; | |
7222 | ||
7223 | /* Gobble the optional double colon, by simply ignoring the result | |
7224 | of gfc_match(). */ | |
7225 | gfc_match (" ::"); | |
7226 | ||
7227 | for (;;) | |
7228 | { | |
7229 | m = attr_decl1 (); | |
7230 | if (m != MATCH_YES) | |
7231 | break; | |
7232 | ||
7233 | if (gfc_match_eos () == MATCH_YES) | |
7234 | { | |
7235 | m = MATCH_YES; | |
7236 | break; | |
7237 | } | |
7238 | ||
7239 | if (gfc_match_char (',') != MATCH_YES) | |
7240 | { | |
7241 | gfc_error ("Unexpected character in variable list at %C"); | |
7242 | m = MATCH_ERROR; | |
7243 | break; | |
7244 | } | |
7245 | } | |
7246 | ||
7247 | return m; | |
7248 | } | |
7249 | ||
7250 | ||
b549d2a5 | 7251 | /* This routine matches Cray Pointer declarations of the form: |
7252 | pointer ( <pointer>, <pointee> ) | |
7253 | or | |
e14bee04 | 7254 | pointer ( <pointer1>, <pointee1> ), ( <pointer2>, <pointee2> ), ... |
7255 | The pointer, if already declared, should be an integer. Otherwise, we | |
b549d2a5 | 7256 | set it as BT_INTEGER with kind gfc_index_integer_kind. The pointee may |
7257 | be either a scalar, or an array declaration. No space is allocated for | |
e14bee04 | 7258 | the pointee. For the statement |
b549d2a5 | 7259 | pointer (ipt, ar(10)) |
7260 | any subsequent uses of ar will be translated (in C-notation) as | |
e14bee04 | 7261 | ar(i) => ((<type> *) ipt)(i) |
b7bf3f81 | 7262 | After gimplification, pointee variable will disappear in the code. */ |
b549d2a5 | 7263 | |
7264 | static match | |
7265 | cray_pointer_decl (void) | |
7266 | { | |
7267 | match m; | |
aff518b0 | 7268 | gfc_array_spec *as = NULL; |
b549d2a5 | 7269 | gfc_symbol *cptr; /* Pointer symbol. */ |
7270 | gfc_symbol *cpte; /* Pointee symbol. */ | |
7271 | locus var_locus; | |
7272 | bool done = false; | |
7273 | ||
7274 | while (!done) | |
7275 | { | |
7276 | if (gfc_match_char ('(') != MATCH_YES) | |
7277 | { | |
0d2b3c9c | 7278 | gfc_error ("Expected %<(%> at %C"); |
e14bee04 | 7279 | return MATCH_ERROR; |
b549d2a5 | 7280 | } |
e14bee04 | 7281 | |
b549d2a5 | 7282 | /* Match pointer. */ |
7283 | var_locus = gfc_current_locus; | |
7284 | gfc_clear_attr (¤t_attr); | |
7285 | gfc_add_cray_pointer (¤t_attr, &var_locus); | |
7286 | current_ts.type = BT_INTEGER; | |
7287 | current_ts.kind = gfc_index_integer_kind; | |
7288 | ||
e14bee04 | 7289 | m = gfc_match_symbol (&cptr, 0); |
b549d2a5 | 7290 | if (m != MATCH_YES) |
7291 | { | |
7292 | gfc_error ("Expected variable name at %C"); | |
7293 | return m; | |
7294 | } | |
e14bee04 | 7295 | |
60e19868 | 7296 | if (!gfc_add_cray_pointer (&cptr->attr, &var_locus)) |
b549d2a5 | 7297 | return MATCH_ERROR; |
7298 | ||
e14bee04 | 7299 | gfc_set_sym_referenced (cptr); |
b549d2a5 | 7300 | |
7301 | if (cptr->ts.type == BT_UNKNOWN) /* Override the type, if necessary. */ | |
7302 | { | |
7303 | cptr->ts.type = BT_INTEGER; | |
e14bee04 | 7304 | cptr->ts.kind = gfc_index_integer_kind; |
b549d2a5 | 7305 | } |
7306 | else if (cptr->ts.type != BT_INTEGER) | |
7307 | { | |
7698a624 | 7308 | gfc_error ("Cray pointer at %C must be an integer"); |
b549d2a5 | 7309 | return MATCH_ERROR; |
7310 | } | |
7311 | else if (cptr->ts.kind < gfc_index_integer_kind) | |
6f521718 | 7312 | gfc_warning (0, "Cray pointer at %C has %d bytes of precision;" |
7698a624 | 7313 | " memory addresses require %d bytes", |
1a9745d2 | 7314 | cptr->ts.kind, gfc_index_integer_kind); |
b549d2a5 | 7315 | |
7316 | if (gfc_match_char (',') != MATCH_YES) | |
7317 | { | |
7318 | gfc_error ("Expected \",\" at %C"); | |
e14bee04 | 7319 | return MATCH_ERROR; |
b549d2a5 | 7320 | } |
7321 | ||
e14bee04 | 7322 | /* Match Pointee. */ |
b549d2a5 | 7323 | var_locus = gfc_current_locus; |
7324 | gfc_clear_attr (¤t_attr); | |
7325 | gfc_add_cray_pointee (¤t_attr, &var_locus); | |
7326 | current_ts.type = BT_UNKNOWN; | |
7327 | current_ts.kind = 0; | |
7328 | ||
7329 | m = gfc_match_symbol (&cpte, 0); | |
7330 | if (m != MATCH_YES) | |
7331 | { | |
7332 | gfc_error ("Expected variable name at %C"); | |
7333 | return m; | |
7334 | } | |
e14bee04 | 7335 | |
b549d2a5 | 7336 | /* Check for an optional array spec. */ |
aff518b0 | 7337 | m = gfc_match_array_spec (&as, true, false); |
b549d2a5 | 7338 | if (m == MATCH_ERROR) |
7339 | { | |
7340 | gfc_free_array_spec (as); | |
7341 | return m; | |
7342 | } | |
7343 | else if (m == MATCH_NO) | |
7344 | { | |
7345 | gfc_free_array_spec (as); | |
7346 | as = NULL; | |
8db94b3b | 7347 | } |
b549d2a5 | 7348 | |
60e19868 | 7349 | if (!gfc_add_cray_pointee (&cpte->attr, &var_locus)) |
b549d2a5 | 7350 | return MATCH_ERROR; |
7351 | ||
7352 | gfc_set_sym_referenced (cpte); | |
7353 | ||
7354 | if (cpte->as == NULL) | |
7355 | { | |
60e19868 | 7356 | if (!gfc_set_array_spec (cpte, as, &var_locus)) |
b549d2a5 | 7357 | gfc_internal_error ("Couldn't set Cray pointee array spec."); |
7358 | } | |
7359 | else if (as != NULL) | |
7360 | { | |
7698a624 | 7361 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
b549d2a5 | 7362 | gfc_free_array_spec (as); |
7363 | return MATCH_ERROR; | |
7364 | } | |
8db94b3b | 7365 | |
b549d2a5 | 7366 | as = NULL; |
8db94b3b | 7367 | |
b549d2a5 | 7368 | if (cpte->as != NULL) |
7369 | { | |
7370 | /* Fix array spec. */ | |
7371 | m = gfc_mod_pointee_as (cpte->as); | |
7372 | if (m == MATCH_ERROR) | |
7373 | return m; | |
8db94b3b | 7374 | } |
7375 | ||
b549d2a5 | 7376 | /* Point the Pointee at the Pointer. */ |
b7bf3f81 | 7377 | cpte->cp_pointer = cptr; |
b549d2a5 | 7378 | |
7379 | if (gfc_match_char (')') != MATCH_YES) | |
7380 | { | |
7381 | gfc_error ("Expected \")\" at %C"); | |
8db94b3b | 7382 | return MATCH_ERROR; |
b549d2a5 | 7383 | } |
7384 | m = gfc_match_char (','); | |
7385 | if (m != MATCH_YES) | |
7386 | done = true; /* Stop searching for more declarations. */ | |
7387 | ||
7388 | } | |
8db94b3b | 7389 | |
b549d2a5 | 7390 | if (m == MATCH_ERROR /* Failed when trying to find ',' above. */ |
7391 | || gfc_match_eos () != MATCH_YES) | |
7392 | { | |
0d2b3c9c | 7393 | gfc_error ("Expected %<,%> or end of statement at %C"); |
b549d2a5 | 7394 | return MATCH_ERROR; |
7395 | } | |
7396 | return MATCH_YES; | |
7397 | } | |
7398 | ||
7399 | ||
4ee9c684 | 7400 | match |
7401 | gfc_match_external (void) | |
7402 | { | |
7403 | ||
7404 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 7405 | current_attr.external = 1; |
4ee9c684 | 7406 | |
7407 | return attr_decl (); | |
7408 | } | |
7409 | ||
7410 | ||
4ee9c684 | 7411 | match |
7412 | gfc_match_intent (void) | |
7413 | { | |
7414 | sym_intent intent; | |
7415 | ||
6a7084d7 | 7416 | /* This is not allowed within a BLOCK construct! */ |
7417 | if (gfc_current_state () == COMP_BLOCK) | |
7418 | { | |
7419 | gfc_error ("INTENT is not allowed inside of BLOCK at %C"); | |
7420 | return MATCH_ERROR; | |
7421 | } | |
7422 | ||
4ee9c684 | 7423 | intent = match_intent_spec (); |
7424 | if (intent == INTENT_UNKNOWN) | |
7425 | return MATCH_ERROR; | |
7426 | ||
7427 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 7428 | current_attr.intent = intent; |
4ee9c684 | 7429 | |
7430 | return attr_decl (); | |
7431 | } | |
7432 | ||
7433 | ||
7434 | match | |
7435 | gfc_match_intrinsic (void) | |
7436 | { | |
7437 | ||
7438 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 7439 | current_attr.intrinsic = 1; |
4ee9c684 | 7440 | |
7441 | return attr_decl (); | |
7442 | } | |
7443 | ||
7444 | ||
7445 | match | |
7446 | gfc_match_optional (void) | |
7447 | { | |
6a7084d7 | 7448 | /* This is not allowed within a BLOCK construct! */ |
7449 | if (gfc_current_state () == COMP_BLOCK) | |
7450 | { | |
7451 | gfc_error ("OPTIONAL is not allowed inside of BLOCK at %C"); | |
7452 | return MATCH_ERROR; | |
7453 | } | |
4ee9c684 | 7454 | |
7455 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 7456 | current_attr.optional = 1; |
4ee9c684 | 7457 | |
7458 | return attr_decl (); | |
7459 | } | |
7460 | ||
7461 | ||
7462 | match | |
7463 | gfc_match_pointer (void) | |
7464 | { | |
b549d2a5 | 7465 | gfc_gobble_whitespace (); |
e0be6f02 | 7466 | if (gfc_peek_ascii_char () == '(') |
b549d2a5 | 7467 | { |
829d7a08 | 7468 | if (!flag_cray_pointer) |
b549d2a5 | 7469 | { |
1a9745d2 | 7470 | gfc_error ("Cray pointer declaration at %C requires -fcray-pointer " |
7471 | "flag"); | |
b549d2a5 | 7472 | return MATCH_ERROR; |
7473 | } | |
7474 | return cray_pointer_decl (); | |
7475 | } | |
7476 | else | |
7477 | { | |
7478 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 7479 | current_attr.pointer = 1; |
8db94b3b | 7480 | |
b549d2a5 | 7481 | return attr_decl (); |
7482 | } | |
4ee9c684 | 7483 | } |
7484 | ||
7485 | ||
7486 | match | |
7487 | gfc_match_allocatable (void) | |
7488 | { | |
4ee9c684 | 7489 | gfc_clear_attr (¤t_attr); |
14efb9b7 | 7490 | current_attr.allocatable = 1; |
4ee9c684 | 7491 | |
7492 | return attr_decl (); | |
7493 | } | |
7494 | ||
7495 | ||
aff518b0 | 7496 | match |
7497 | gfc_match_codimension (void) | |
7498 | { | |
7499 | gfc_clear_attr (¤t_attr); | |
7500 | current_attr.codimension = 1; | |
7501 | ||
7502 | return attr_decl (); | |
7503 | } | |
7504 | ||
7505 | ||
b3c3927c | 7506 | match |
7507 | gfc_match_contiguous (void) | |
7508 | { | |
60e19868 | 7509 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS statement at %C")) |
b3c3927c | 7510 | return MATCH_ERROR; |
7511 | ||
7512 | gfc_clear_attr (¤t_attr); | |
7513 | current_attr.contiguous = 1; | |
7514 | ||
7515 | return attr_decl (); | |
7516 | } | |
7517 | ||
7518 | ||
4ee9c684 | 7519 | match |
7520 | gfc_match_dimension (void) | |
7521 | { | |
4ee9c684 | 7522 | gfc_clear_attr (¤t_attr); |
14efb9b7 | 7523 | current_attr.dimension = 1; |
4ee9c684 | 7524 | |
7525 | return attr_decl (); | |
7526 | } | |
7527 | ||
7528 | ||
7529 | match | |
7530 | gfc_match_target (void) | |
7531 | { | |
4ee9c684 | 7532 | gfc_clear_attr (¤t_attr); |
14efb9b7 | 7533 | current_attr.target = 1; |
4ee9c684 | 7534 | |
7535 | return attr_decl (); | |
7536 | } | |
7537 | ||
7538 | ||
7539 | /* Match the list of entities being specified in a PUBLIC or PRIVATE | |
7540 | statement. */ | |
7541 | ||
7542 | static match | |
7543 | access_attr_decl (gfc_statement st) | |
7544 | { | |
7545 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7546 | interface_type type; | |
7547 | gfc_user_op *uop; | |
c2958b6b | 7548 | gfc_symbol *sym, *dt_sym; |
dcb1b019 | 7549 | gfc_intrinsic_op op; |
4ee9c684 | 7550 | match m; |
7551 | ||
7552 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7553 | goto done; | |
7554 | ||
7555 | for (;;) | |
7556 | { | |
dcb1b019 | 7557 | m = gfc_match_generic_spec (&type, name, &op); |
4ee9c684 | 7558 | if (m == MATCH_NO) |
7559 | goto syntax; | |
7560 | if (m == MATCH_ERROR) | |
7561 | return MATCH_ERROR; | |
7562 | ||
7563 | switch (type) | |
7564 | { | |
7565 | case INTERFACE_NAMELESS: | |
94fa7146 | 7566 | case INTERFACE_ABSTRACT: |
4ee9c684 | 7567 | goto syntax; |
7568 | ||
7569 | case INTERFACE_GENERIC: | |
9f732c4e | 7570 | case INTERFACE_DTIO: |
4ee9c684 | 7571 | if (gfc_get_symbol (name, NULL, &sym)) |
7572 | goto done; | |
7573 | ||
76e207a9 | 7574 | if (!gfc_add_access (&sym->attr, |
7575 | (st == ST_PUBLIC) | |
7576 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
60e19868 | 7577 | sym->name, NULL)) |
4ee9c684 | 7578 | return MATCH_ERROR; |
7579 | ||
c2958b6b | 7580 | if (sym->attr.generic && (dt_sym = gfc_find_dt_in_generic (sym)) |
76e207a9 | 7581 | && !gfc_add_access (&dt_sym->attr, |
7582 | (st == ST_PUBLIC) | |
7583 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
60e19868 | 7584 | sym->name, NULL)) |
c2958b6b | 7585 | return MATCH_ERROR; |
7586 | ||
4ee9c684 | 7587 | break; |
7588 | ||
7589 | case INTERFACE_INTRINSIC_OP: | |
dcb1b019 | 7590 | if (gfc_current_ns->operator_access[op] == ACCESS_UNKNOWN) |
4ee9c684 | 7591 | { |
0c482c1d | 7592 | gfc_intrinsic_op other_op; |
7593 | ||
dcb1b019 | 7594 | gfc_current_ns->operator_access[op] = |
4ee9c684 | 7595 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; |
0c482c1d | 7596 | |
7597 | /* Handle the case if there is another op with the same | |
7598 | function, for INTRINSIC_EQ vs. INTRINSIC_EQ_OS and so on. */ | |
7599 | other_op = gfc_equivalent_op (op); | |
7600 | ||
7601 | if (other_op != INTRINSIC_NONE) | |
7602 | gfc_current_ns->operator_access[other_op] = | |
7603 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
7604 | ||
4ee9c684 | 7605 | } |
7606 | else | |
7607 | { | |
7608 | gfc_error ("Access specification of the %s operator at %C has " | |
dcb1b019 | 7609 | "already been specified", gfc_op2string (op)); |
4ee9c684 | 7610 | goto done; |
7611 | } | |
7612 | ||
7613 | break; | |
7614 | ||
7615 | case INTERFACE_USER_OP: | |
7616 | uop = gfc_get_uop (name); | |
7617 | ||
7618 | if (uop->access == ACCESS_UNKNOWN) | |
7619 | { | |
1a9745d2 | 7620 | uop->access = (st == ST_PUBLIC) |
7621 | ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
4ee9c684 | 7622 | } |
7623 | else | |
7624 | { | |
1a9745d2 | 7625 | gfc_error ("Access specification of the .%s. operator at %C " |
7626 | "has already been specified", sym->name); | |
4ee9c684 | 7627 | goto done; |
7628 | } | |
7629 | ||
7630 | break; | |
7631 | } | |
7632 | ||
7633 | if (gfc_match_char (',') == MATCH_NO) | |
7634 | break; | |
7635 | } | |
7636 | ||
7637 | if (gfc_match_eos () != MATCH_YES) | |
7638 | goto syntax; | |
7639 | return MATCH_YES; | |
7640 | ||
7641 | syntax: | |
7642 | gfc_syntax_error (st); | |
7643 | ||
7644 | done: | |
7645 | return MATCH_ERROR; | |
7646 | } | |
7647 | ||
7648 | ||
3ea52af3 | 7649 | match |
7650 | gfc_match_protected (void) | |
7651 | { | |
7652 | gfc_symbol *sym; | |
7653 | match m; | |
7654 | ||
54c0257b | 7655 | if (!gfc_current_ns->proc_name |
7656 | || gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
3ea52af3 | 7657 | { |
7658 | gfc_error ("PROTECTED at %C only allowed in specification " | |
7659 | "part of a module"); | |
7660 | return MATCH_ERROR; | |
7661 | ||
7662 | } | |
7663 | ||
60e19868 | 7664 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED statement at %C")) |
3ea52af3 | 7665 | return MATCH_ERROR; |
7666 | ||
7667 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7668 | { | |
7669 | return MATCH_ERROR; | |
7670 | } | |
7671 | ||
7672 | if (gfc_match_eos () == MATCH_YES) | |
7673 | goto syntax; | |
7674 | ||
7675 | for(;;) | |
7676 | { | |
7677 | m = gfc_match_symbol (&sym, 0); | |
7678 | switch (m) | |
7679 | { | |
7680 | case MATCH_YES: | |
60e19868 | 7681 | if (!gfc_add_protected (&sym->attr, sym->name, &gfc_current_locus)) |
3ea52af3 | 7682 | return MATCH_ERROR; |
7683 | goto next_item; | |
7684 | ||
7685 | case MATCH_NO: | |
7686 | break; | |
7687 | ||
7688 | case MATCH_ERROR: | |
7689 | return MATCH_ERROR; | |
7690 | } | |
7691 | ||
7692 | next_item: | |
7693 | if (gfc_match_eos () == MATCH_YES) | |
7694 | break; | |
7695 | if (gfc_match_char (',') != MATCH_YES) | |
7696 | goto syntax; | |
7697 | } | |
7698 | ||
7699 | return MATCH_YES; | |
7700 | ||
7701 | syntax: | |
7702 | gfc_error ("Syntax error in PROTECTED statement at %C"); | |
7703 | return MATCH_ERROR; | |
7704 | } | |
7705 | ||
7706 | ||
a0527218 | 7707 | /* The PRIVATE statement is a bit weird in that it can be an attribute |
69b1505f | 7708 | declaration, but also works as a standalone statement inside of a |
4ee9c684 | 7709 | type declaration or a module. */ |
7710 | ||
7711 | match | |
1a9745d2 | 7712 | gfc_match_private (gfc_statement *st) |
4ee9c684 | 7713 | { |
7714 | ||
7715 | if (gfc_match ("private") != MATCH_YES) | |
7716 | return MATCH_NO; | |
7717 | ||
e14bee04 | 7718 | if (gfc_current_state () != COMP_MODULE |
7fd88f6e | 7719 | && !(gfc_current_state () == COMP_DERIVED |
7720 | && gfc_state_stack->previous | |
7721 | && gfc_state_stack->previous->state == COMP_MODULE) | |
7722 | && !(gfc_current_state () == COMP_DERIVED_CONTAINS | |
7723 | && gfc_state_stack->previous && gfc_state_stack->previous->previous | |
7724 | && gfc_state_stack->previous->previous->state == COMP_MODULE)) | |
e14bee04 | 7725 | { |
7726 | gfc_error ("PRIVATE statement at %C is only allowed in the " | |
7727 | "specification part of a module"); | |
7728 | return MATCH_ERROR; | |
7729 | } | |
7730 | ||
4ee9c684 | 7731 | if (gfc_current_state () == COMP_DERIVED) |
7732 | { | |
7733 | if (gfc_match_eos () == MATCH_YES) | |
7734 | { | |
7735 | *st = ST_PRIVATE; | |
7736 | return MATCH_YES; | |
7737 | } | |
7738 | ||
7739 | gfc_syntax_error (ST_PRIVATE); | |
7740 | return MATCH_ERROR; | |
7741 | } | |
7742 | ||
7743 | if (gfc_match_eos () == MATCH_YES) | |
7744 | { | |
7745 | *st = ST_PRIVATE; | |
7746 | return MATCH_YES; | |
7747 | } | |
7748 | ||
7749 | *st = ST_ATTR_DECL; | |
7750 | return access_attr_decl (ST_PRIVATE); | |
7751 | } | |
7752 | ||
7753 | ||
7754 | match | |
1a9745d2 | 7755 | gfc_match_public (gfc_statement *st) |
4ee9c684 | 7756 | { |
7757 | ||
7758 | if (gfc_match ("public") != MATCH_YES) | |
7759 | return MATCH_NO; | |
7760 | ||
e14bee04 | 7761 | if (gfc_current_state () != COMP_MODULE) |
7762 | { | |
7763 | gfc_error ("PUBLIC statement at %C is only allowed in the " | |
7764 | "specification part of a module"); | |
7765 | return MATCH_ERROR; | |
7766 | } | |
7767 | ||
4ee9c684 | 7768 | if (gfc_match_eos () == MATCH_YES) |
7769 | { | |
7770 | *st = ST_PUBLIC; | |
7771 | return MATCH_YES; | |
7772 | } | |
7773 | ||
7774 | *st = ST_ATTR_DECL; | |
7775 | return access_attr_decl (ST_PUBLIC); | |
7776 | } | |
7777 | ||
7778 | ||
7779 | /* Workhorse for gfc_match_parameter. */ | |
7780 | ||
7781 | static match | |
7782 | do_parm (void) | |
7783 | { | |
7784 | gfc_symbol *sym; | |
7785 | gfc_expr *init; | |
7786 | match m; | |
60e19868 | 7787 | bool t; |
4ee9c684 | 7788 | |
7789 | m = gfc_match_symbol (&sym, 0); | |
7790 | if (m == MATCH_NO) | |
7791 | gfc_error ("Expected variable name at %C in PARAMETER statement"); | |
7792 | ||
7793 | if (m != MATCH_YES) | |
7794 | return m; | |
7795 | ||
7796 | if (gfc_match_char ('=') == MATCH_NO) | |
7797 | { | |
7798 | gfc_error ("Expected = sign in PARAMETER statement at %C"); | |
7799 | return MATCH_ERROR; | |
7800 | } | |
7801 | ||
7802 | m = gfc_match_init_expr (&init); | |
7803 | if (m == MATCH_NO) | |
7804 | gfc_error ("Expected expression at %C in PARAMETER statement"); | |
7805 | if (m != MATCH_YES) | |
7806 | return m; | |
7807 | ||
7808 | if (sym->ts.type == BT_UNKNOWN | |
60e19868 | 7809 | && !gfc_set_default_type (sym, 1, NULL)) |
4ee9c684 | 7810 | { |
7811 | m = MATCH_ERROR; | |
7812 | goto cleanup; | |
7813 | } | |
7814 | ||
60e19868 | 7815 | if (!gfc_check_assign_symbol (sym, NULL, init) |
7816 | || !gfc_add_flavor (&sym->attr, FL_PARAMETER, sym->name, NULL)) | |
4ee9c684 | 7817 | { |
7818 | m = MATCH_ERROR; | |
7819 | goto cleanup; | |
7820 | } | |
7821 | ||
13aebeb0 | 7822 | if (sym->value) |
7823 | { | |
7824 | gfc_error ("Initializing already initialized variable at %C"); | |
7825 | m = MATCH_ERROR; | |
7826 | goto cleanup; | |
7827 | } | |
7828 | ||
f16404e3 | 7829 | t = add_init_expr_to_sym (sym->name, &init, &gfc_current_locus); |
60e19868 | 7830 | return (t) ? MATCH_YES : MATCH_ERROR; |
4ee9c684 | 7831 | |
7832 | cleanup: | |
7833 | gfc_free_expr (init); | |
7834 | return m; | |
7835 | } | |
7836 | ||
7837 | ||
7838 | /* Match a parameter statement, with the weird syntax that these have. */ | |
7839 | ||
7840 | match | |
7841 | gfc_match_parameter (void) | |
7842 | { | |
2c628787 | 7843 | const char *term = " )%t"; |
4ee9c684 | 7844 | match m; |
7845 | ||
7846 | if (gfc_match_char ('(') == MATCH_NO) | |
2c628787 | 7847 | { |
7848 | /* With legacy PARAMETER statements, don't expect a terminating ')'. */ | |
7849 | if (!gfc_notify_std (GFC_STD_LEGACY, "PARAMETER without '()' at %C")) | |
7850 | return MATCH_NO; | |
7851 | term = " %t"; | |
7852 | } | |
4ee9c684 | 7853 | |
7854 | for (;;) | |
7855 | { | |
7856 | m = do_parm (); | |
7857 | if (m != MATCH_YES) | |
7858 | break; | |
7859 | ||
2c628787 | 7860 | if (gfc_match (term) == MATCH_YES) |
4ee9c684 | 7861 | break; |
7862 | ||
7863 | if (gfc_match_char (',') != MATCH_YES) | |
7864 | { | |
7865 | gfc_error ("Unexpected characters in PARAMETER statement at %C"); | |
7866 | m = MATCH_ERROR; | |
7867 | break; | |
7868 | } | |
7869 | } | |
7870 | ||
7871 | return m; | |
7872 | } | |
7873 | ||
7874 | ||
8e652fcf | 7875 | match |
7876 | gfc_match_automatic (void) | |
7877 | { | |
7878 | gfc_symbol *sym; | |
7879 | match m; | |
7880 | bool seen_symbol = false; | |
7881 | ||
7882 | if (!flag_dec_static) | |
7883 | { | |
7884 | gfc_error ("AUTOMATIC at %C is a DEC extension, enable with " | |
7885 | "-fdec-static"); | |
7886 | return MATCH_ERROR; | |
7887 | } | |
7888 | ||
7889 | gfc_match (" ::"); | |
7890 | ||
7891 | for (;;) | |
7892 | { | |
7893 | m = gfc_match_symbol (&sym, 0); | |
7894 | switch (m) | |
7895 | { | |
7896 | case MATCH_NO: | |
7897 | break; | |
7898 | ||
7899 | case MATCH_ERROR: | |
7900 | return MATCH_ERROR; | |
7901 | ||
7902 | case MATCH_YES: | |
7903 | if (!gfc_add_automatic (&sym->attr, sym->name, &gfc_current_locus)) | |
7904 | return MATCH_ERROR; | |
7905 | seen_symbol = true; | |
7906 | break; | |
7907 | } | |
7908 | ||
7909 | if (gfc_match_eos () == MATCH_YES) | |
7910 | break; | |
7911 | if (gfc_match_char (',') != MATCH_YES) | |
7912 | goto syntax; | |
7913 | } | |
7914 | ||
7915 | if (!seen_symbol) | |
7916 | { | |
7917 | gfc_error ("Expected entity-list in AUTOMATIC statement at %C"); | |
7918 | return MATCH_ERROR; | |
7919 | } | |
7920 | ||
7921 | return MATCH_YES; | |
7922 | ||
7923 | syntax: | |
7924 | gfc_error ("Syntax error in AUTOMATIC statement at %C"); | |
7925 | return MATCH_ERROR; | |
7926 | } | |
7927 | ||
7928 | ||
7929 | match | |
7930 | gfc_match_static (void) | |
7931 | { | |
7932 | gfc_symbol *sym; | |
7933 | match m; | |
7934 | bool seen_symbol = false; | |
7935 | ||
7936 | if (!flag_dec_static) | |
7937 | { | |
7938 | gfc_error ("STATIC at %C is a DEC extension, enable with -fdec-static"); | |
7939 | return MATCH_ERROR; | |
7940 | } | |
7941 | ||
7942 | gfc_match (" ::"); | |
7943 | ||
7944 | for (;;) | |
7945 | { | |
7946 | m = gfc_match_symbol (&sym, 0); | |
7947 | switch (m) | |
7948 | { | |
7949 | case MATCH_NO: | |
7950 | break; | |
7951 | ||
7952 | case MATCH_ERROR: | |
7953 | return MATCH_ERROR; | |
7954 | ||
7955 | case MATCH_YES: | |
7956 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, | |
7957 | &gfc_current_locus)) | |
7958 | return MATCH_ERROR; | |
7959 | seen_symbol = true; | |
7960 | break; | |
7961 | } | |
7962 | ||
7963 | if (gfc_match_eos () == MATCH_YES) | |
7964 | break; | |
7965 | if (gfc_match_char (',') != MATCH_YES) | |
7966 | goto syntax; | |
7967 | } | |
7968 | ||
7969 | if (!seen_symbol) | |
7970 | { | |
7971 | gfc_error ("Expected entity-list in STATIC statement at %C"); | |
7972 | return MATCH_ERROR; | |
7973 | } | |
7974 | ||
7975 | return MATCH_YES; | |
7976 | ||
7977 | syntax: | |
7978 | gfc_error ("Syntax error in STATIC statement at %C"); | |
7979 | return MATCH_ERROR; | |
7980 | } | |
7981 | ||
7982 | ||
4ee9c684 | 7983 | /* Save statements have a special syntax. */ |
7984 | ||
7985 | match | |
7986 | gfc_match_save (void) | |
7987 | { | |
82f5ee13 | 7988 | char n[GFC_MAX_SYMBOL_LEN+1]; |
7989 | gfc_common_head *c; | |
4ee9c684 | 7990 | gfc_symbol *sym; |
7991 | match m; | |
7992 | ||
7993 | if (gfc_match_eos () == MATCH_YES) | |
7994 | { | |
7995 | if (gfc_current_ns->seen_save) | |
7996 | { | |
60e19868 | 7997 | if (!gfc_notify_std (GFC_STD_LEGACY, "Blanket SAVE statement at %C " |
7998 | "follows previous SAVE statement")) | |
76e82f95 | 7999 | return MATCH_ERROR; |
4ee9c684 | 8000 | } |
8001 | ||
8002 | gfc_current_ns->save_all = gfc_current_ns->seen_save = 1; | |
8003 | return MATCH_YES; | |
8004 | } | |
8005 | ||
8006 | if (gfc_current_ns->save_all) | |
8007 | { | |
60e19868 | 8008 | if (!gfc_notify_std (GFC_STD_LEGACY, "SAVE statement at %C follows " |
8009 | "blanket SAVE statement")) | |
76e82f95 | 8010 | return MATCH_ERROR; |
4ee9c684 | 8011 | } |
8012 | ||
8013 | gfc_match (" ::"); | |
8014 | ||
8015 | for (;;) | |
8016 | { | |
8017 | m = gfc_match_symbol (&sym, 0); | |
8018 | switch (m) | |
8019 | { | |
8020 | case MATCH_YES: | |
76e207a9 | 8021 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, |
60e19868 | 8022 | &gfc_current_locus)) |
4ee9c684 | 8023 | return MATCH_ERROR; |
8024 | goto next_item; | |
8025 | ||
8026 | case MATCH_NO: | |
8027 | break; | |
8028 | ||
8029 | case MATCH_ERROR: | |
8030 | return MATCH_ERROR; | |
8031 | } | |
8032 | ||
82f5ee13 | 8033 | m = gfc_match (" / %n /", &n); |
4ee9c684 | 8034 | if (m == MATCH_ERROR) |
8035 | return MATCH_ERROR; | |
8036 | if (m == MATCH_NO) | |
8037 | goto syntax; | |
8038 | ||
403ddc45 | 8039 | c = gfc_get_common (n, 0); |
82f5ee13 | 8040 | c->saved = 1; |
8041 | ||
4ee9c684 | 8042 | gfc_current_ns->seen_save = 1; |
8043 | ||
8044 | next_item: | |
8045 | if (gfc_match_eos () == MATCH_YES) | |
8046 | break; | |
8047 | if (gfc_match_char (',') != MATCH_YES) | |
8048 | goto syntax; | |
8049 | } | |
8050 | ||
8051 | return MATCH_YES; | |
8052 | ||
8053 | syntax: | |
8054 | gfc_error ("Syntax error in SAVE statement at %C"); | |
8055 | return MATCH_ERROR; | |
8056 | } | |
8057 | ||
8058 | ||
8f6339b6 | 8059 | match |
8060 | gfc_match_value (void) | |
8061 | { | |
8062 | gfc_symbol *sym; | |
8063 | match m; | |
8064 | ||
6a7084d7 | 8065 | /* This is not allowed within a BLOCK construct! */ |
8066 | if (gfc_current_state () == COMP_BLOCK) | |
8067 | { | |
8068 | gfc_error ("VALUE is not allowed inside of BLOCK at %C"); | |
8069 | return MATCH_ERROR; | |
8070 | } | |
8071 | ||
60e19868 | 8072 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE statement at %C")) |
8f6339b6 | 8073 | return MATCH_ERROR; |
8074 | ||
8075 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8076 | { | |
8077 | return MATCH_ERROR; | |
8078 | } | |
8079 | ||
8080 | if (gfc_match_eos () == MATCH_YES) | |
8081 | goto syntax; | |
8082 | ||
8083 | for(;;) | |
8084 | { | |
8085 | m = gfc_match_symbol (&sym, 0); | |
8086 | switch (m) | |
8087 | { | |
8088 | case MATCH_YES: | |
60e19868 | 8089 | if (!gfc_add_value (&sym->attr, sym->name, &gfc_current_locus)) |
8f6339b6 | 8090 | return MATCH_ERROR; |
8091 | goto next_item; | |
8092 | ||
8093 | case MATCH_NO: | |
8094 | break; | |
8095 | ||
8096 | case MATCH_ERROR: | |
8097 | return MATCH_ERROR; | |
8098 | } | |
8099 | ||
8100 | next_item: | |
8101 | if (gfc_match_eos () == MATCH_YES) | |
8102 | break; | |
8103 | if (gfc_match_char (',') != MATCH_YES) | |
8104 | goto syntax; | |
8105 | } | |
8106 | ||
8107 | return MATCH_YES; | |
8108 | ||
8109 | syntax: | |
8110 | gfc_error ("Syntax error in VALUE statement at %C"); | |
8111 | return MATCH_ERROR; | |
8112 | } | |
8113 | ||
f6d0e37a | 8114 | |
ef814c81 | 8115 | match |
8116 | gfc_match_volatile (void) | |
8117 | { | |
8118 | gfc_symbol *sym; | |
8119 | match m; | |
8120 | ||
60e19868 | 8121 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE statement at %C")) |
ef814c81 | 8122 | return MATCH_ERROR; |
8123 | ||
8124 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8125 | { | |
8126 | return MATCH_ERROR; | |
8127 | } | |
8128 | ||
8129 | if (gfc_match_eos () == MATCH_YES) | |
8130 | goto syntax; | |
8131 | ||
8132 | for(;;) | |
8133 | { | |
8db94b3b | 8134 | /* VOLATILE is special because it can be added to host-associated |
293d72e0 | 8135 | symbols locally. Except for coarrays. */ |
2f241857 | 8136 | m = gfc_match_symbol (&sym, 1); |
ef814c81 | 8137 | switch (m) |
8138 | { | |
8139 | case MATCH_YES: | |
aff518b0 | 8140 | /* F2008, C560+C561. VOLATILE for host-/use-associated variable or |
8141 | for variable in a BLOCK which is defined outside of the BLOCK. */ | |
8142 | if (sym->ns != gfc_current_ns && sym->attr.codimension) | |
8143 | { | |
716da296 | 8144 | gfc_error ("Specifying VOLATILE for coarray variable %qs at " |
aff518b0 | 8145 | "%C, which is use-/host-associated", sym->name); |
8146 | return MATCH_ERROR; | |
8147 | } | |
60e19868 | 8148 | if (!gfc_add_volatile (&sym->attr, sym->name, &gfc_current_locus)) |
ef814c81 | 8149 | return MATCH_ERROR; |
8150 | goto next_item; | |
8151 | ||
8152 | case MATCH_NO: | |
8153 | break; | |
8154 | ||
8155 | case MATCH_ERROR: | |
8156 | return MATCH_ERROR; | |
8157 | } | |
8158 | ||
8159 | next_item: | |
8160 | if (gfc_match_eos () == MATCH_YES) | |
8161 | break; | |
8162 | if (gfc_match_char (',') != MATCH_YES) | |
8163 | goto syntax; | |
8164 | } | |
8165 | ||
8166 | return MATCH_YES; | |
8167 | ||
8168 | syntax: | |
8169 | gfc_error ("Syntax error in VOLATILE statement at %C"); | |
8170 | return MATCH_ERROR; | |
8171 | } | |
8172 | ||
8173 | ||
738928be | 8174 | match |
8175 | gfc_match_asynchronous (void) | |
8176 | { | |
8177 | gfc_symbol *sym; | |
8178 | match m; | |
8179 | ||
60e19868 | 8180 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS statement at %C")) |
738928be | 8181 | return MATCH_ERROR; |
8182 | ||
8183 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8184 | { | |
8185 | return MATCH_ERROR; | |
8186 | } | |
8187 | ||
8188 | if (gfc_match_eos () == MATCH_YES) | |
8189 | goto syntax; | |
8190 | ||
8191 | for(;;) | |
8192 | { | |
8db94b3b | 8193 | /* ASYNCHRONOUS is special because it can be added to host-associated |
738928be | 8194 | symbols locally. */ |
8195 | m = gfc_match_symbol (&sym, 1); | |
8196 | switch (m) | |
8197 | { | |
8198 | case MATCH_YES: | |
60e19868 | 8199 | if (!gfc_add_asynchronous (&sym->attr, sym->name, &gfc_current_locus)) |
738928be | 8200 | return MATCH_ERROR; |
8201 | goto next_item; | |
8202 | ||
8203 | case MATCH_NO: | |
8204 | break; | |
8205 | ||
8206 | case MATCH_ERROR: | |
8207 | return MATCH_ERROR; | |
8208 | } | |
8209 | ||
8210 | next_item: | |
8211 | if (gfc_match_eos () == MATCH_YES) | |
8212 | break; | |
8213 | if (gfc_match_char (',') != MATCH_YES) | |
8214 | goto syntax; | |
8215 | } | |
8216 | ||
8217 | return MATCH_YES; | |
8218 | ||
8219 | syntax: | |
8220 | gfc_error ("Syntax error in ASYNCHRONOUS statement at %C"); | |
8221 | return MATCH_ERROR; | |
8222 | } | |
8223 | ||
8224 | ||
4b8eb6ca | 8225 | /* Match a module procedure statement in a submodule. */ |
8226 | ||
8227 | match | |
8228 | gfc_match_submod_proc (void) | |
8229 | { | |
8230 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8231 | gfc_symbol *sym, *fsym; | |
8232 | match m; | |
8233 | gfc_formal_arglist *formal, *head, *tail; | |
8234 | ||
8235 | if (gfc_current_state () != COMP_CONTAINS | |
8236 | || !(gfc_state_stack->previous | |
76e207a9 | 8237 | && (gfc_state_stack->previous->state == COMP_SUBMODULE |
8238 | || gfc_state_stack->previous->state == COMP_MODULE))) | |
4b8eb6ca | 8239 | return MATCH_NO; |
8240 | ||
8241 | m = gfc_match (" module% procedure% %n", name); | |
8242 | if (m != MATCH_YES) | |
8243 | return m; | |
8244 | ||
8245 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE PROCEDURE declaration " | |
8246 | "at %C")) | |
8247 | return MATCH_ERROR; | |
8248 | ||
8249 | if (get_proc_name (name, &sym, false)) | |
8250 | return MATCH_ERROR; | |
8251 | ||
8252 | /* Make sure that the result field is appropriately filled, even though | |
8253 | the result symbol will be replaced later on. */ | |
fe9d2f5a | 8254 | if (sym->ts.interface && sym->ts.interface->attr.function) |
4b8eb6ca | 8255 | { |
8256 | if (sym->ts.interface->result | |
8257 | && sym->ts.interface->result != sym->ts.interface) | |
8258 | sym->result= sym->ts.interface->result; | |
8259 | else | |
8260 | sym->result = sym; | |
8261 | } | |
8262 | ||
8263 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if | |
8264 | the symbol existed before. */ | |
8265 | sym->declared_at = gfc_current_locus; | |
8266 | ||
8267 | if (!sym->attr.module_procedure) | |
8268 | return MATCH_ERROR; | |
8269 | ||
8270 | /* Signal match_end to expect "end procedure". */ | |
8271 | sym->abr_modproc_decl = 1; | |
8272 | ||
8273 | /* Change from IFSRC_IFBODY coming from the interface declaration. */ | |
8274 | sym->attr.if_source = IFSRC_DECL; | |
8275 | ||
8276 | gfc_new_block = sym; | |
8277 | ||
8278 | /* Make a new formal arglist with the symbols in the procedure | |
8279 | namespace. */ | |
8280 | head = tail = NULL; | |
8281 | for (formal = sym->formal; formal && formal->sym; formal = formal->next) | |
8282 | { | |
8283 | if (formal == sym->formal) | |
8284 | head = tail = gfc_get_formal_arglist (); | |
8285 | else | |
8286 | { | |
8287 | tail->next = gfc_get_formal_arglist (); | |
8288 | tail = tail->next; | |
8289 | } | |
8290 | ||
8291 | if (gfc_copy_dummy_sym (&fsym, formal->sym, 0)) | |
8292 | goto cleanup; | |
8293 | ||
8294 | tail->sym = fsym; | |
8295 | gfc_set_sym_referenced (fsym); | |
8296 | } | |
8297 | ||
8298 | /* The dummy symbols get cleaned up, when the formal_namespace of the | |
8299 | interface declaration is cleared. This allows us to add the | |
8300 | explicit interface as is done for other type of procedure. */ | |
8301 | if (!gfc_add_explicit_interface (sym, IFSRC_DECL, head, | |
8302 | &gfc_current_locus)) | |
8303 | return MATCH_ERROR; | |
8304 | ||
8305 | if (gfc_match_eos () != MATCH_YES) | |
8306 | { | |
8307 | gfc_syntax_error (ST_MODULE_PROC); | |
8308 | return MATCH_ERROR; | |
8309 | } | |
8310 | ||
8311 | return MATCH_YES; | |
8312 | ||
8313 | cleanup: | |
8314 | gfc_free_formal_arglist (head); | |
8315 | return MATCH_ERROR; | |
8316 | } | |
8317 | ||
8318 | ||
4ee9c684 | 8319 | /* Match a module procedure statement. Note that we have to modify |
8320 | symbols in the parent's namespace because the current one was there | |
89d91d02 | 8321 | to receive symbols that are in an interface's formal argument list. */ |
4ee9c684 | 8322 | |
8323 | match | |
8324 | gfc_match_modproc (void) | |
8325 | { | |
8326 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8327 | gfc_symbol *sym; | |
8328 | match m; | |
d920fb76 | 8329 | locus old_locus; |
63d42079 | 8330 | gfc_namespace *module_ns; |
94ce9f74 | 8331 | gfc_interface *old_interface_head, *interface; |
4ee9c684 | 8332 | |
8333 | if (gfc_state_stack->state != COMP_INTERFACE | |
8334 | || gfc_state_stack->previous == NULL | |
5cf92482 | 8335 | || current_interface.type == INTERFACE_NAMELESS |
8336 | || current_interface.type == INTERFACE_ABSTRACT) | |
4ee9c684 | 8337 | { |
1a9745d2 | 8338 | gfc_error ("MODULE PROCEDURE at %C must be in a generic module " |
8339 | "interface"); | |
4ee9c684 | 8340 | return MATCH_ERROR; |
8341 | } | |
8342 | ||
63d42079 | 8343 | module_ns = gfc_current_ns->parent; |
8344 | for (; module_ns; module_ns = module_ns->parent) | |
15ca3865 | 8345 | if (module_ns->proc_name->attr.flavor == FL_MODULE |
8346 | || module_ns->proc_name->attr.flavor == FL_PROGRAM | |
8347 | || (module_ns->proc_name->attr.flavor == FL_PROCEDURE | |
8348 | && !module_ns->proc_name->attr.contained)) | |
63d42079 | 8349 | break; |
8350 | ||
8351 | if (module_ns == NULL) | |
8352 | return MATCH_ERROR; | |
8353 | ||
94ce9f74 | 8354 | /* Store the current state of the interface. We will need it if we |
8355 | end up with a syntax error and need to recover. */ | |
8356 | old_interface_head = gfc_current_interface_head (); | |
8357 | ||
d920fb76 | 8358 | /* Check if the F2008 optional double colon appears. */ |
8359 | gfc_gobble_whitespace (); | |
8360 | old_locus = gfc_current_locus; | |
8361 | if (gfc_match ("::") == MATCH_YES) | |
8362 | { | |
60e19868 | 8363 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
8364 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
d920fb76 | 8365 | return MATCH_ERROR; |
8366 | } | |
8367 | else | |
8368 | gfc_current_locus = old_locus; | |
8db94b3b | 8369 | |
4ee9c684 | 8370 | for (;;) |
8371 | { | |
94ce9f74 | 8372 | bool last = false; |
d920fb76 | 8373 | old_locus = gfc_current_locus; |
94ce9f74 | 8374 | |
4ee9c684 | 8375 | m = gfc_match_name (name); |
8376 | if (m == MATCH_NO) | |
8377 | goto syntax; | |
8378 | if (m != MATCH_YES) | |
8379 | return MATCH_ERROR; | |
8380 | ||
94ce9f74 | 8381 | /* Check for syntax error before starting to add symbols to the |
8382 | current namespace. */ | |
8383 | if (gfc_match_eos () == MATCH_YES) | |
8384 | last = true; | |
d920fb76 | 8385 | |
94ce9f74 | 8386 | if (!last && gfc_match_char (',') != MATCH_YES) |
8387 | goto syntax; | |
8388 | ||
8389 | /* Now we're sure the syntax is valid, we process this item | |
8390 | further. */ | |
63d42079 | 8391 | if (gfc_get_symbol (name, module_ns, &sym)) |
4ee9c684 | 8392 | return MATCH_ERROR; |
8393 | ||
15ca3865 | 8394 | if (sym->attr.intrinsic) |
8395 | { | |
8396 | gfc_error ("Intrinsic procedure at %L cannot be a MODULE " | |
8397 | "PROCEDURE", &old_locus); | |
8398 | return MATCH_ERROR; | |
8399 | } | |
8400 | ||
4ee9c684 | 8401 | if (sym->attr.proc != PROC_MODULE |
60e19868 | 8402 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
4ee9c684 | 8403 | return MATCH_ERROR; |
8404 | ||
60e19868 | 8405 | if (!gfc_add_interface (sym)) |
4ee9c684 | 8406 | return MATCH_ERROR; |
8407 | ||
3186f695 | 8408 | sym->attr.mod_proc = 1; |
15ca3865 | 8409 | sym->declared_at = old_locus; |
3186f695 | 8410 | |
94ce9f74 | 8411 | if (last) |
4ee9c684 | 8412 | break; |
4ee9c684 | 8413 | } |
8414 | ||
8415 | return MATCH_YES; | |
8416 | ||
8417 | syntax: | |
94ce9f74 | 8418 | /* Restore the previous state of the interface. */ |
8419 | interface = gfc_current_interface_head (); | |
8420 | gfc_set_current_interface_head (old_interface_head); | |
8421 | ||
8422 | /* Free the new interfaces. */ | |
8423 | while (interface != old_interface_head) | |
8424 | { | |
8425 | gfc_interface *i = interface->next; | |
434f0922 | 8426 | free (interface); |
94ce9f74 | 8427 | interface = i; |
8428 | } | |
8429 | ||
8430 | /* And issue a syntax error. */ | |
4ee9c684 | 8431 | gfc_syntax_error (ST_MODULE_PROC); |
8432 | return MATCH_ERROR; | |
8433 | } | |
8434 | ||
8435 | ||
ea94d76d | 8436 | /* Check a derived type that is being extended. */ |
7a99bc9b | 8437 | |
ea94d76d | 8438 | static gfc_symbol* |
8439 | check_extended_derived_type (char *name) | |
8440 | { | |
8441 | gfc_symbol *extended; | |
8442 | ||
8443 | if (gfc_find_symbol (name, gfc_current_ns, 1, &extended)) | |
8444 | { | |
8445 | gfc_error ("Ambiguous symbol in TYPE definition at %C"); | |
8446 | return NULL; | |
8447 | } | |
8448 | ||
7a99bc9b | 8449 | extended = gfc_find_dt_in_generic (extended); |
8450 | ||
8451 | /* F08:C428. */ | |
ea94d76d | 8452 | if (!extended) |
8453 | { | |
716da296 | 8454 | gfc_error ("Symbol %qs at %C has not been previously defined", name); |
ea94d76d | 8455 | return NULL; |
8456 | } | |
8457 | ||
8458 | if (extended->attr.flavor != FL_DERIVED) | |
8459 | { | |
716da296 | 8460 | gfc_error ("%qs in EXTENDS expression at %C is not a " |
ea94d76d | 8461 | "derived type", name); |
8462 | return NULL; | |
8463 | } | |
8464 | ||
8465 | if (extended->attr.is_bind_c) | |
8466 | { | |
716da296 | 8467 | gfc_error ("%qs cannot be extended at %C because it " |
ea94d76d | 8468 | "is BIND(C)", extended->name); |
8469 | return NULL; | |
8470 | } | |
8471 | ||
8472 | if (extended->attr.sequence) | |
8473 | { | |
716da296 | 8474 | gfc_error ("%qs cannot be extended at %C because it " |
ea94d76d | 8475 | "is a SEQUENCE type", extended->name); |
8476 | return NULL; | |
8477 | } | |
8478 | ||
8479 | return extended; | |
8480 | } | |
8481 | ||
8482 | ||
c5d33754 | 8483 | /* Match the optional attribute specifiers for a type declaration. |
8484 | Return MATCH_ERROR if an error is encountered in one of the handled | |
8485 | attributes (public, private, bind(c)), MATCH_NO if what's found is | |
8486 | not a handled attribute, and MATCH_YES otherwise. TODO: More error | |
8487 | checking on attribute conflicts needs to be done. */ | |
4ee9c684 | 8488 | |
8489 | match | |
ea94d76d | 8490 | gfc_get_type_attr_spec (symbol_attribute *attr, char *name) |
4ee9c684 | 8491 | { |
c5d33754 | 8492 | /* See if the derived type is marked as private. */ |
4ee9c684 | 8493 | if (gfc_match (" , private") == MATCH_YES) |
8494 | { | |
e14bee04 | 8495 | if (gfc_current_state () != COMP_MODULE) |
4ee9c684 | 8496 | { |
e14bee04 | 8497 | gfc_error ("Derived type at %C can only be PRIVATE in the " |
8498 | "specification part of a module"); | |
4ee9c684 | 8499 | return MATCH_ERROR; |
8500 | } | |
8501 | ||
60e19868 | 8502 | if (!gfc_add_access (attr, ACCESS_PRIVATE, NULL, NULL)) |
4ee9c684 | 8503 | return MATCH_ERROR; |
4ee9c684 | 8504 | } |
c5d33754 | 8505 | else if (gfc_match (" , public") == MATCH_YES) |
4ee9c684 | 8506 | { |
e14bee04 | 8507 | if (gfc_current_state () != COMP_MODULE) |
4ee9c684 | 8508 | { |
e14bee04 | 8509 | gfc_error ("Derived type at %C can only be PUBLIC in the " |
8510 | "specification part of a module"); | |
4ee9c684 | 8511 | return MATCH_ERROR; |
8512 | } | |
8513 | ||
60e19868 | 8514 | if (!gfc_add_access (attr, ACCESS_PUBLIC, NULL, NULL)) |
4ee9c684 | 8515 | return MATCH_ERROR; |
4ee9c684 | 8516 | } |
ac5f2650 | 8517 | else if (gfc_match (" , bind ( c )") == MATCH_YES) |
c5d33754 | 8518 | { |
8519 | /* If the type is defined to be bind(c) it then needs to make | |
8520 | sure that all fields are interoperable. This will | |
8521 | need to be a semantic check on the finished derived type. | |
8522 | See 15.2.3 (lines 9-12) of F2003 draft. */ | |
60e19868 | 8523 | if (!gfc_add_is_bind_c (attr, NULL, &gfc_current_locus, 0)) |
c5d33754 | 8524 | return MATCH_ERROR; |
8525 | ||
8526 | /* TODO: attr conflicts need to be checked, probably in symbol.c. */ | |
8527 | } | |
ac5f2650 | 8528 | else if (gfc_match (" , abstract") == MATCH_YES) |
8529 | { | |
60e19868 | 8530 | if (!gfc_notify_std (GFC_STD_F2003, "ABSTRACT type at %C")) |
ac5f2650 | 8531 | return MATCH_ERROR; |
8532 | ||
60e19868 | 8533 | if (!gfc_add_abstract (attr, &gfc_current_locus)) |
ac5f2650 | 8534 | return MATCH_ERROR; |
8535 | } | |
60e19868 | 8536 | else if (name && gfc_match (" , extends ( %n )", name) == MATCH_YES) |
ea94d76d | 8537 | { |
60e19868 | 8538 | if (!gfc_add_extension (attr, &gfc_current_locus)) |
ea94d76d | 8539 | return MATCH_ERROR; |
8540 | } | |
c5d33754 | 8541 | else |
8542 | return MATCH_NO; | |
8543 | ||
8544 | /* If we get here, something matched. */ | |
8545 | return MATCH_YES; | |
8546 | } | |
8547 | ||
8548 | ||
d7cd448a | 8549 | /* Common function for type declaration blocks similar to derived types, such |
8550 | as STRUCTURES and MAPs. Unlike derived types, a structure type | |
8551 | does NOT have a generic symbol matching the name given by the user. | |
8552 | STRUCTUREs can share names with variables and PARAMETERs so we must allow | |
8553 | for the creation of an independent symbol. | |
7d7125df | 8554 | Other parameters are a message to prefix errors with, the name of the new |
d7cd448a | 8555 | type to be created, and the flavor to add to the resulting symbol. */ |
8556 | ||
8557 | static bool | |
8558 | get_struct_decl (const char *name, sym_flavor fl, locus *decl, | |
8559 | gfc_symbol **result) | |
8560 | { | |
8561 | gfc_symbol *sym; | |
8562 | locus where; | |
8563 | ||
8564 | gcc_assert (name[0] == (char) TOUPPER (name[0])); | |
8565 | ||
8566 | if (decl) | |
8567 | where = *decl; | |
8568 | else | |
8569 | where = gfc_current_locus; | |
8570 | ||
8571 | if (gfc_get_symbol (name, NULL, &sym)) | |
8572 | return false; | |
8573 | ||
8574 | if (!sym) | |
8575 | { | |
8576 | gfc_internal_error ("Failed to create structure type '%s' at %C", name); | |
8577 | return false; | |
8578 | } | |
8579 | ||
8580 | if (sym->components != NULL || sym->attr.zero_comp) | |
8581 | { | |
7d7125df | 8582 | gfc_error ("Type definition of '%s' at %C was already defined at %L", |
d7cd448a | 8583 | sym->name, &sym->declared_at); |
8584 | return false; | |
8585 | } | |
8586 | ||
8587 | sym->declared_at = where; | |
8588 | ||
8589 | if (sym->attr.flavor != fl | |
8590 | && !gfc_add_flavor (&sym->attr, fl, sym->name, NULL)) | |
8591 | return false; | |
8592 | ||
8593 | if (!sym->hash_value) | |
8594 | /* Set the hash for the compound name for this type. */ | |
8595 | sym->hash_value = gfc_hash_value (sym); | |
8596 | ||
8597 | /* Normally the type is expected to have been completely parsed by the time | |
8598 | a field declaration with this type is seen. For unions, maps, and nested | |
8599 | structure declarations, we need to indicate that it is okay that we | |
8600 | haven't seen any components yet. This will be updated after the structure | |
8601 | is fully parsed. */ | |
8602 | sym->attr.zero_comp = 0; | |
8603 | ||
8604 | /* Structures always act like derived-types with the SEQUENCE attribute */ | |
8605 | gfc_add_sequence (&sym->attr, sym->name, NULL); | |
8606 | ||
8607 | if (result) *result = sym; | |
8608 | ||
8609 | return true; | |
8610 | } | |
8611 | ||
8612 | ||
8613 | /* Match the opening of a MAP block. Like a struct within a union in C; | |
8614 | behaves identical to STRUCTURE blocks. */ | |
8615 | ||
8616 | match | |
8617 | gfc_match_map (void) | |
8618 | { | |
ac1739da | 8619 | /* Counter used to give unique internal names to map structures. */ |
8620 | static unsigned int gfc_map_id = 0; | |
8621 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8622 | gfc_symbol *sym; | |
8623 | locus old_loc; | |
d7cd448a | 8624 | |
ac1739da | 8625 | old_loc = gfc_current_locus; |
d7cd448a | 8626 | |
ac1739da | 8627 | if (gfc_match_eos () != MATCH_YES) |
8628 | { | |
8629 | gfc_error ("Junk after MAP statement at %C"); | |
8630 | gfc_current_locus = old_loc; | |
8631 | return MATCH_ERROR; | |
8632 | } | |
d7cd448a | 8633 | |
ac1739da | 8634 | /* Map blocks are anonymous so we make up unique names for the symbol table |
8635 | which are invalid Fortran identifiers. */ | |
8636 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "MM$%u", gfc_map_id++); | |
d7cd448a | 8637 | |
ac1739da | 8638 | if (!get_struct_decl (name, FL_STRUCT, &old_loc, &sym)) |
8639 | return MATCH_ERROR; | |
d7cd448a | 8640 | |
ac1739da | 8641 | gfc_new_block = sym; |
d7cd448a | 8642 | |
ac1739da | 8643 | return MATCH_YES; |
d7cd448a | 8644 | } |
8645 | ||
8646 | ||
8647 | /* Match the opening of a UNION block. */ | |
8648 | ||
8649 | match | |
8650 | gfc_match_union (void) | |
8651 | { | |
ac1739da | 8652 | /* Counter used to give unique internal names to union types. */ |
8653 | static unsigned int gfc_union_id = 0; | |
8654 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8655 | gfc_symbol *sym; | |
8656 | locus old_loc; | |
d7cd448a | 8657 | |
ac1739da | 8658 | old_loc = gfc_current_locus; |
d7cd448a | 8659 | |
ac1739da | 8660 | if (gfc_match_eos () != MATCH_YES) |
8661 | { | |
8662 | gfc_error ("Junk after UNION statement at %C"); | |
8663 | gfc_current_locus = old_loc; | |
8664 | return MATCH_ERROR; | |
8665 | } | |
d7cd448a | 8666 | |
ac1739da | 8667 | /* Unions are anonymous so we make up unique names for the symbol table |
8668 | which are invalid Fortran identifiers. */ | |
8669 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "UU$%u", gfc_union_id++); | |
d7cd448a | 8670 | |
ac1739da | 8671 | if (!get_struct_decl (name, FL_UNION, &old_loc, &sym)) |
8672 | return MATCH_ERROR; | |
d7cd448a | 8673 | |
ac1739da | 8674 | gfc_new_block = sym; |
d7cd448a | 8675 | |
ac1739da | 8676 | return MATCH_YES; |
d7cd448a | 8677 | } |
8678 | ||
8679 | ||
8680 | /* Match the beginning of a STRUCTURE declaration. This is similar to | |
8681 | matching the beginning of a derived type declaration with a few | |
8682 | twists. The resulting type symbol has no access control or other | |
8683 | interesting attributes. */ | |
8684 | ||
8685 | match | |
8686 | gfc_match_structure_decl (void) | |
8687 | { | |
ac1739da | 8688 | /* Counter used to give unique internal names to anonymous structures. */ |
8689 | static unsigned int gfc_structure_id = 0; | |
8690 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8691 | gfc_symbol *sym; | |
8692 | match m; | |
8693 | locus where; | |
d7cd448a | 8694 | |
ac1739da | 8695 | if (!flag_dec_structure) |
8696 | { | |
8697 | gfc_error ("STRUCTURE at %C is a DEC extension, enable with " | |
8698 | "-fdec-structure"); | |
8699 | return MATCH_ERROR; | |
8700 | } | |
d7cd448a | 8701 | |
ac1739da | 8702 | name[0] = '\0'; |
d7cd448a | 8703 | |
ac1739da | 8704 | m = gfc_match (" /%n/", name); |
8705 | if (m != MATCH_YES) | |
8706 | { | |
8707 | /* Non-nested structure declarations require a structure name. */ | |
8708 | if (!gfc_comp_struct (gfc_current_state ())) | |
8709 | { | |
8710 | gfc_error ("Structure name expected in non-nested structure " | |
8711 | "declaration at %C"); | |
8712 | return MATCH_ERROR; | |
8713 | } | |
8714 | /* This is an anonymous structure; make up a unique name for it | |
8715 | (upper-case letters never make it to symbol names from the source). | |
8716 | The important thing is initializing the type variable | |
8717 | and setting gfc_new_symbol, which is immediately used by | |
8718 | parse_structure () and variable_decl () to add components of | |
8719 | this type. */ | |
8720 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "SS$%u", gfc_structure_id++); | |
8721 | } | |
d7cd448a | 8722 | |
ac1739da | 8723 | where = gfc_current_locus; |
8724 | /* No field list allowed after non-nested structure declaration. */ | |
8725 | if (!gfc_comp_struct (gfc_current_state ()) | |
8726 | && gfc_match_eos () != MATCH_YES) | |
8727 | { | |
8728 | gfc_error ("Junk after non-nested STRUCTURE statement at %C"); | |
8729 | return MATCH_ERROR; | |
8730 | } | |
d7cd448a | 8731 | |
ac1739da | 8732 | /* Make sure the name is not the name of an intrinsic type. */ |
8733 | if (gfc_is_intrinsic_typename (name)) | |
8734 | { | |
8735 | gfc_error ("Structure name '%s' at %C cannot be the same as an" | |
8736 | " intrinsic type", name); | |
8737 | return MATCH_ERROR; | |
8738 | } | |
d7cd448a | 8739 | |
ac1739da | 8740 | /* Store the actual type symbol for the structure with an upper-case first |
8741 | letter (an invalid Fortran identifier). */ | |
d7cd448a | 8742 | |
ac1739da | 8743 | sprintf (name, gfc_dt_upper_string (name)); |
8744 | if (!get_struct_decl (name, FL_STRUCT, &where, &sym)) | |
8745 | return MATCH_ERROR; | |
d7cd448a | 8746 | |
ac1739da | 8747 | gfc_new_block = sym; |
8748 | return MATCH_YES; | |
d7cd448a | 8749 | } |
8750 | ||
006943e8 | 8751 | |
8752 | /* This function does some work to determine which matcher should be used to | |
8753 | * match a statement beginning with "TYPE". This is used to disambiguate TYPE | |
8754 | * as an alias for PRINT from derived type declarations, TYPE IS statements, | |
8755 | * and derived type data declarations. */ | |
8756 | ||
8757 | match | |
8758 | gfc_match_type (gfc_statement *st) | |
8759 | { | |
8760 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8761 | match m; | |
8762 | locus old_loc; | |
8763 | ||
8764 | /* Requires -fdec. */ | |
8765 | if (!flag_dec) | |
8766 | return MATCH_NO; | |
8767 | ||
8768 | m = gfc_match ("type"); | |
8769 | if (m != MATCH_YES) | |
8770 | return m; | |
8771 | /* If we already have an error in the buffer, it is probably from failing to | |
8772 | * match a derived type data declaration. Let it happen. */ | |
8773 | else if (gfc_error_flag_test ()) | |
8774 | return MATCH_NO; | |
8775 | ||
8776 | old_loc = gfc_current_locus; | |
8777 | *st = ST_NONE; | |
8778 | ||
8779 | /* If we see an attribute list before anything else it's definitely a derived | |
8780 | * type declaration. */ | |
8781 | if (gfc_match (" ,") == MATCH_YES || gfc_match (" ::") == MATCH_YES) | |
8782 | { | |
8783 | gfc_current_locus = old_loc; | |
8784 | *st = ST_DERIVED_DECL; | |
8785 | return gfc_match_derived_decl (); | |
8786 | } | |
8787 | ||
8788 | /* By now "TYPE" has already been matched. If we do not see a name, this may | |
8789 | * be something like "TYPE *" or "TYPE <fmt>". */ | |
8790 | m = gfc_match_name (name); | |
8791 | if (m != MATCH_YES) | |
8792 | { | |
8793 | /* Let print match if it can, otherwise throw an error from | |
8794 | * gfc_match_derived_decl. */ | |
8795 | gfc_current_locus = old_loc; | |
8796 | if (gfc_match_print () == MATCH_YES) | |
8797 | { | |
8798 | *st = ST_WRITE; | |
8799 | return MATCH_YES; | |
8800 | } | |
8801 | gfc_current_locus = old_loc; | |
8802 | *st = ST_DERIVED_DECL; | |
8803 | return gfc_match_derived_decl (); | |
8804 | } | |
8805 | ||
8806 | /* A derived type declaration requires an EOS. Without it, assume print. */ | |
8807 | m = gfc_match_eos (); | |
8808 | if (m == MATCH_NO) | |
8809 | { | |
8810 | /* Check manually for TYPE IS (... - this is invalid print syntax. */ | |
8811 | if (strncmp ("is", name, 3) == 0 | |
8812 | && gfc_match (" (", name) == MATCH_YES) | |
8813 | { | |
8814 | gfc_current_locus = old_loc; | |
8815 | gcc_assert (gfc_match (" is") == MATCH_YES); | |
8816 | *st = ST_TYPE_IS; | |
8817 | return gfc_match_type_is (); | |
8818 | } | |
8819 | gfc_current_locus = old_loc; | |
8820 | *st = ST_WRITE; | |
8821 | return gfc_match_print (); | |
8822 | } | |
8823 | else | |
8824 | { | |
8825 | /* By now we have "TYPE <name> <EOS>". Check first if the name is an | |
8826 | * intrinsic typename - if so let gfc_match_derived_decl dump an error. | |
8827 | * Otherwise if gfc_match_derived_decl fails it's probably an existing | |
8828 | * symbol which can be printed. */ | |
8829 | gfc_current_locus = old_loc; | |
8830 | m = gfc_match_derived_decl (); | |
8831 | if (gfc_is_intrinsic_typename (name) || m == MATCH_YES) | |
8832 | { | |
8833 | *st = ST_DERIVED_DECL; | |
8834 | return m; | |
8835 | } | |
8836 | gfc_current_locus = old_loc; | |
8837 | *st = ST_WRITE; | |
8838 | return gfc_match_print (); | |
8839 | } | |
8840 | ||
8841 | return MATCH_NO; | |
8842 | } | |
8843 | ||
8844 | ||
c5d33754 | 8845 | /* Match the beginning of a derived type declaration. If a type name |
8846 | was the result of a function, then it is possible to have a symbol | |
8847 | already to be known as a derived type yet have no components. */ | |
8848 | ||
8849 | match | |
8850 | gfc_match_derived_decl (void) | |
8851 | { | |
8852 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
ea94d76d | 8853 | char parent[GFC_MAX_SYMBOL_LEN + 1]; |
c5d33754 | 8854 | symbol_attribute attr; |
c2958b6b | 8855 | gfc_symbol *sym, *gensym; |
ea94d76d | 8856 | gfc_symbol *extended; |
c5d33754 | 8857 | match m; |
8858 | match is_type_attr_spec = MATCH_NO; | |
33e86520 | 8859 | bool seen_attr = false; |
c2958b6b | 8860 | gfc_interface *intr = NULL, *head; |
c5d33754 | 8861 | |
d7cd448a | 8862 | if (gfc_comp_struct (gfc_current_state ())) |
c5d33754 | 8863 | return MATCH_NO; |
8864 | ||
ea94d76d | 8865 | name[0] = '\0'; |
8866 | parent[0] = '\0'; | |
c5d33754 | 8867 | gfc_clear_attr (&attr); |
ea94d76d | 8868 | extended = NULL; |
c5d33754 | 8869 | |
8870 | do | |
8871 | { | |
ea94d76d | 8872 | is_type_attr_spec = gfc_get_type_attr_spec (&attr, parent); |
c5d33754 | 8873 | if (is_type_attr_spec == MATCH_ERROR) |
8874 | return MATCH_ERROR; | |
33e86520 | 8875 | if (is_type_attr_spec == MATCH_YES) |
8876 | seen_attr = true; | |
c5d33754 | 8877 | } while (is_type_attr_spec == MATCH_YES); |
4ee9c684 | 8878 | |
e485ad6b | 8879 | /* Deal with derived type extensions. The extension attribute has |
8880 | been added to 'attr' but now the parent type must be found and | |
8881 | checked. */ | |
ea94d76d | 8882 | if (parent[0]) |
8883 | extended = check_extended_derived_type (parent); | |
8884 | ||
8885 | if (parent[0] && !extended) | |
8886 | return MATCH_ERROR; | |
8887 | ||
33e86520 | 8888 | if (gfc_match (" ::") != MATCH_YES && seen_attr) |
4ee9c684 | 8889 | { |
8890 | gfc_error ("Expected :: in TYPE definition at %C"); | |
8891 | return MATCH_ERROR; | |
8892 | } | |
8893 | ||
8894 | m = gfc_match (" %n%t", name); | |
8895 | if (m != MATCH_YES) | |
8896 | return m; | |
8897 | ||
a3055431 | 8898 | /* Make sure the name is not the name of an intrinsic type. */ |
8899 | if (gfc_is_intrinsic_typename (name)) | |
4ee9c684 | 8900 | { |
716da296 | 8901 | gfc_error ("Type name %qs at %C cannot be the same as an intrinsic " |
1a9745d2 | 8902 | "type", name); |
4ee9c684 | 8903 | return MATCH_ERROR; |
8904 | } | |
8905 | ||
c2958b6b | 8906 | if (gfc_get_symbol (name, NULL, &gensym)) |
4ee9c684 | 8907 | return MATCH_ERROR; |
8908 | ||
c2958b6b | 8909 | if (!gensym->attr.generic && gensym->ts.type != BT_UNKNOWN) |
4ee9c684 | 8910 | { |
716da296 | 8911 | gfc_error ("Derived type name %qs at %C already has a basic type " |
c2958b6b | 8912 | "of %s", gensym->name, gfc_typename (&gensym->ts)); |
8913 | return MATCH_ERROR; | |
8914 | } | |
8915 | ||
8916 | if (!gensym->attr.generic | |
60e19868 | 8917 | && !gfc_add_generic (&gensym->attr, gensym->name, NULL)) |
c2958b6b | 8918 | return MATCH_ERROR; |
8919 | ||
8920 | if (!gensym->attr.function | |
60e19868 | 8921 | && !gfc_add_function (&gensym->attr, gensym->name, NULL)) |
c2958b6b | 8922 | return MATCH_ERROR; |
8923 | ||
8924 | sym = gfc_find_dt_in_generic (gensym); | |
8925 | ||
8926 | if (sym && (sym->components != NULL || sym->attr.zero_comp)) | |
8927 | { | |
716da296 | 8928 | gfc_error ("Derived type definition of %qs at %C has already been " |
c2958b6b | 8929 | "defined", sym->name); |
4ee9c684 | 8930 | return MATCH_ERROR; |
8931 | } | |
8932 | ||
c2958b6b | 8933 | if (!sym) |
8934 | { | |
8935 | /* Use upper case to save the actual derived-type symbol. */ | |
d7cd448a | 8936 | gfc_get_symbol (gfc_dt_upper_string (gensym->name), NULL, &sym); |
c2958b6b | 8937 | sym->name = gfc_get_string (gensym->name); |
8938 | head = gensym->generic; | |
8939 | intr = gfc_get_interface (); | |
8940 | intr->sym = sym; | |
8941 | intr->where = gfc_current_locus; | |
8942 | intr->sym->declared_at = gfc_current_locus; | |
8943 | intr->next = head; | |
8944 | gensym->generic = intr; | |
8945 | gensym->attr.if_source = IFSRC_DECL; | |
8946 | } | |
8947 | ||
4ee9c684 | 8948 | /* The symbol may already have the derived attribute without the |
8949 | components. The ways this can happen is via a function | |
8950 | definition, an INTRINSIC statement or a subtype in another | |
8951 | derived type that is a pointer. The first part of the AND clause | |
69b1505f | 8952 | is true if the symbol is not the return value of a function. */ |
4ee9c684 | 8953 | if (sym->attr.flavor != FL_DERIVED |
60e19868 | 8954 | && !gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL)) |
4ee9c684 | 8955 | return MATCH_ERROR; |
8956 | ||
4ee9c684 | 8957 | if (attr.access != ACCESS_UNKNOWN |
60e19868 | 8958 | && !gfc_add_access (&sym->attr, attr.access, sym->name, NULL)) |
4ee9c684 | 8959 | return MATCH_ERROR; |
c2958b6b | 8960 | else if (sym->attr.access == ACCESS_UNKNOWN |
8961 | && gensym->attr.access != ACCESS_UNKNOWN | |
76e207a9 | 8962 | && !gfc_add_access (&sym->attr, gensym->attr.access, |
60e19868 | 8963 | sym->name, NULL)) |
c2958b6b | 8964 | return MATCH_ERROR; |
8965 | ||
8966 | if (sym->attr.access != ACCESS_UNKNOWN | |
8967 | && gensym->attr.access == ACCESS_UNKNOWN) | |
8968 | gensym->attr.access = sym->attr.access; | |
4ee9c684 | 8969 | |
c5d33754 | 8970 | /* See if the derived type was labeled as bind(c). */ |
8971 | if (attr.is_bind_c != 0) | |
8972 | sym->attr.is_bind_c = attr.is_bind_c; | |
8973 | ||
223f0f57 | 8974 | /* Construct the f2k_derived namespace if it is not yet there. */ |
8975 | if (!sym->f2k_derived) | |
8976 | sym->f2k_derived = gfc_get_namespace (NULL, 0); | |
8db94b3b | 8977 | |
ea94d76d | 8978 | if (extended && !sym->components) |
8979 | { | |
8980 | gfc_component *p; | |
ea94d76d | 8981 | |
8982 | /* Add the extended derived type as the first component. */ | |
8983 | gfc_add_component (sym, parent, &p); | |
ea94d76d | 8984 | extended->refs++; |
8985 | gfc_set_sym_referenced (extended); | |
8986 | ||
8987 | p->ts.type = BT_DERIVED; | |
eeebe20b | 8988 | p->ts.u.derived = extended; |
ea94d76d | 8989 | p->initializer = gfc_default_initializer (&p->ts); |
8db94b3b | 8990 | |
bdfbc762 | 8991 | /* Set extension level. */ |
8992 | if (extended->attr.extension == 255) | |
8993 | { | |
8994 | /* Since the extension field is 8 bit wide, we can only have | |
8995 | up to 255 extension levels. */ | |
716da296 | 8996 | gfc_error ("Maximum extension level reached with type %qs at %L", |
bdfbc762 | 8997 | extended->name, &extended->declared_at); |
8998 | return MATCH_ERROR; | |
8999 | } | |
9000 | sym->attr.extension = extended->attr.extension + 1; | |
ea94d76d | 9001 | |
9002 | /* Provide the links between the extended type and its extension. */ | |
9003 | if (!extended->f2k_derived) | |
9004 | extended->f2k_derived = gfc_get_namespace (NULL, 0); | |
ea94d76d | 9005 | } |
9006 | ||
bdfbc762 | 9007 | if (!sym->hash_value) |
9008 | /* Set the hash for the compound name for this type. */ | |
a656e7c2 | 9009 | sym->hash_value = gfc_hash_value (sym); |
1de1b1a9 | 9010 | |
ac5f2650 | 9011 | /* Take over the ABSTRACT attribute. */ |
9012 | sym->attr.abstract = attr.abstract; | |
9013 | ||
4ee9c684 | 9014 | gfc_new_block = sym; |
9015 | ||
9016 | return MATCH_YES; | |
9017 | } | |
b549d2a5 | 9018 | |
9019 | ||
8db94b3b | 9020 | /* Cray Pointees can be declared as: |
452695a8 | 9021 | pointer (ipt, a (n,m,...,*)) */ |
b549d2a5 | 9022 | |
8458f4ca | 9023 | match |
b549d2a5 | 9024 | gfc_mod_pointee_as (gfc_array_spec *as) |
9025 | { | |
9026 | as->cray_pointee = true; /* This will be useful to know later. */ | |
9027 | if (as->type == AS_ASSUMED_SIZE) | |
452695a8 | 9028 | as->cp_was_assumed = true; |
b549d2a5 | 9029 | else if (as->type == AS_ASSUMED_SHAPE) |
9030 | { | |
9031 | gfc_error ("Cray Pointee at %C cannot be assumed shape array"); | |
9032 | return MATCH_ERROR; | |
9033 | } | |
9034 | return MATCH_YES; | |
9035 | } | |
3b6a4b41 | 9036 | |
9037 | ||
8db94b3b | 9038 | /* Match the enum definition statement, here we are trying to match |
9039 | the first line of enum definition statement. | |
3b6a4b41 | 9040 | Returns MATCH_YES if match is found. */ |
9041 | ||
9042 | match | |
9043 | gfc_match_enum (void) | |
9044 | { | |
9045 | match m; | |
8db94b3b | 9046 | |
3b6a4b41 | 9047 | m = gfc_match_eos (); |
9048 | if (m != MATCH_YES) | |
9049 | return m; | |
9050 | ||
60e19868 | 9051 | if (!gfc_notify_std (GFC_STD_F2003, "ENUM and ENUMERATOR at %C")) |
3b6a4b41 | 9052 | return MATCH_ERROR; |
9053 | ||
9054 | return MATCH_YES; | |
9055 | } | |
9056 | ||
9057 | ||
fe1328da | 9058 | /* Returns an initializer whose value is one higher than the value of the |
9059 | LAST_INITIALIZER argument. If the argument is NULL, the | |
9060 | initializers value will be set to zero. The initializer's kind | |
9061 | will be set to gfc_c_int_kind. | |
9062 | ||
9063 | If -fshort-enums is given, the appropriate kind will be selected | |
9064 | later after all enumerators have been parsed. A warning is issued | |
9065 | here if an initializer exceeds gfc_c_int_kind. */ | |
9066 | ||
9067 | static gfc_expr * | |
9068 | enum_initializer (gfc_expr *last_initializer, locus where) | |
9069 | { | |
9070 | gfc_expr *result; | |
126387b5 | 9071 | result = gfc_get_constant_expr (BT_INTEGER, gfc_c_int_kind, &where); |
fe1328da | 9072 | |
9073 | mpz_init (result->value.integer); | |
9074 | ||
9075 | if (last_initializer != NULL) | |
9076 | { | |
9077 | mpz_add_ui (result->value.integer, last_initializer->value.integer, 1); | |
9078 | result->where = last_initializer->where; | |
9079 | ||
9080 | if (gfc_check_integer_range (result->value.integer, | |
9081 | gfc_c_int_kind) != ARITH_OK) | |
9082 | { | |
9083 | gfc_error ("Enumerator exceeds the C integer type at %C"); | |
9084 | return NULL; | |
9085 | } | |
9086 | } | |
9087 | else | |
9088 | { | |
9089 | /* Control comes here, if it's the very first enumerator and no | |
9090 | initializer has been given. It will be initialized to zero. */ | |
9091 | mpz_set_si (result->value.integer, 0); | |
9092 | } | |
9093 | ||
9094 | return result; | |
9095 | } | |
9096 | ||
9097 | ||
60fbbf9e | 9098 | /* Match a variable name with an optional initializer. When this |
9099 | subroutine is called, a variable is expected to be parsed next. | |
9100 | Depending on what is happening at the moment, updates either the | |
9101 | symbol table or the current interface. */ | |
9102 | ||
9103 | static match | |
9104 | enumerator_decl (void) | |
9105 | { | |
9106 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9107 | gfc_expr *initializer; | |
9108 | gfc_array_spec *as = NULL; | |
9109 | gfc_symbol *sym; | |
9110 | locus var_locus; | |
9111 | match m; | |
60e19868 | 9112 | bool t; |
60fbbf9e | 9113 | locus old_locus; |
9114 | ||
9115 | initializer = NULL; | |
9116 | old_locus = gfc_current_locus; | |
9117 | ||
9118 | /* When we get here, we've just matched a list of attributes and | |
9119 | maybe a type and a double colon. The next thing we expect to see | |
9120 | is the name of the symbol. */ | |
9121 | m = gfc_match_name (name); | |
9122 | if (m != MATCH_YES) | |
9123 | goto cleanup; | |
9124 | ||
9125 | var_locus = gfc_current_locus; | |
9126 | ||
9127 | /* OK, we've successfully matched the declaration. Now put the | |
9128 | symbol in the current namespace. If we fail to create the symbol, | |
9129 | bail out. */ | |
60e19868 | 9130 | if (!build_sym (name, NULL, false, &as, &var_locus)) |
60fbbf9e | 9131 | { |
9132 | m = MATCH_ERROR; | |
9133 | goto cleanup; | |
9134 | } | |
9135 | ||
9136 | /* The double colon must be present in order to have initializers. | |
9137 | Otherwise the statement is ambiguous with an assignment statement. */ | |
9138 | if (colon_seen) | |
9139 | { | |
9140 | if (gfc_match_char ('=') == MATCH_YES) | |
9141 | { | |
9142 | m = gfc_match_init_expr (&initializer); | |
9143 | if (m == MATCH_NO) | |
9144 | { | |
9145 | gfc_error ("Expected an initialization expression at %C"); | |
9146 | m = MATCH_ERROR; | |
9147 | } | |
9148 | ||
9149 | if (m != MATCH_YES) | |
9150 | goto cleanup; | |
9151 | } | |
9152 | } | |
9153 | ||
9154 | /* If we do not have an initializer, the initialization value of the | |
9155 | previous enumerator (stored in last_initializer) is incremented | |
9156 | by 1 and is used to initialize the current enumerator. */ | |
9157 | if (initializer == NULL) | |
fe1328da | 9158 | initializer = enum_initializer (last_initializer, old_locus); |
e14bee04 | 9159 | |
60fbbf9e | 9160 | if (initializer == NULL || initializer->ts.type != BT_INTEGER) |
9161 | { | |
a8beb4f8 | 9162 | gfc_error ("ENUMERATOR %L not initialized with integer expression", |
9163 | &var_locus); | |
e14bee04 | 9164 | m = MATCH_ERROR; |
60fbbf9e | 9165 | goto cleanup; |
9166 | } | |
9167 | ||
9168 | /* Store this current initializer, for the next enumerator variable | |
9169 | to be parsed. add_init_expr_to_sym() zeros initializer, so we | |
9170 | use last_initializer below. */ | |
9171 | last_initializer = initializer; | |
9172 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
9173 | ||
9174 | /* Maintain enumerator history. */ | |
9175 | gfc_find_symbol (name, NULL, 0, &sym); | |
9176 | create_enum_history (sym, last_initializer); | |
9177 | ||
60e19868 | 9178 | return (t) ? MATCH_YES : MATCH_ERROR; |
60fbbf9e | 9179 | |
9180 | cleanup: | |
9181 | /* Free stuff up and return. */ | |
9182 | gfc_free_expr (initializer); | |
9183 | ||
9184 | return m; | |
9185 | } | |
9186 | ||
9187 | ||
f6d0e37a | 9188 | /* Match the enumerator definition statement. */ |
3b6a4b41 | 9189 | |
9190 | match | |
9191 | gfc_match_enumerator_def (void) | |
9192 | { | |
9193 | match m; | |
60e19868 | 9194 | bool t; |
e14bee04 | 9195 | |
3b6a4b41 | 9196 | gfc_clear_ts (¤t_ts); |
e14bee04 | 9197 | |
3b6a4b41 | 9198 | m = gfc_match (" enumerator"); |
9199 | if (m != MATCH_YES) | |
9200 | return m; | |
60fbbf9e | 9201 | |
9202 | m = gfc_match (" :: "); | |
9203 | if (m == MATCH_ERROR) | |
9204 | return m; | |
9205 | ||
9206 | colon_seen = (m == MATCH_YES); | |
e14bee04 | 9207 | |
3b6a4b41 | 9208 | if (gfc_current_state () != COMP_ENUM) |
9209 | { | |
9210 | gfc_error ("ENUM definition statement expected before %C"); | |
9211 | gfc_free_enum_history (); | |
9212 | return MATCH_ERROR; | |
9213 | } | |
9214 | ||
9215 | (¤t_ts)->type = BT_INTEGER; | |
9216 | (¤t_ts)->kind = gfc_c_int_kind; | |
e14bee04 | 9217 | |
60fbbf9e | 9218 | gfc_clear_attr (¤t_attr); |
9219 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, NULL); | |
60e19868 | 9220 | if (!t) |
3b6a4b41 | 9221 | { |
60fbbf9e | 9222 | m = MATCH_ERROR; |
3b6a4b41 | 9223 | goto cleanup; |
9224 | } | |
9225 | ||
3b6a4b41 | 9226 | for (;;) |
9227 | { | |
60fbbf9e | 9228 | m = enumerator_decl (); |
3b6a4b41 | 9229 | if (m == MATCH_ERROR) |
a8beb4f8 | 9230 | { |
9231 | gfc_free_enum_history (); | |
9232 | goto cleanup; | |
9233 | } | |
3b6a4b41 | 9234 | if (m == MATCH_NO) |
9235 | break; | |
9236 | ||
9237 | if (gfc_match_eos () == MATCH_YES) | |
9238 | goto cleanup; | |
9239 | if (gfc_match_char (',') != MATCH_YES) | |
9240 | break; | |
9241 | } | |
9242 | ||
9243 | if (gfc_current_state () == COMP_ENUM) | |
9244 | { | |
9245 | gfc_free_enum_history (); | |
9246 | gfc_error ("Syntax error in ENUMERATOR definition at %C"); | |
9247 | m = MATCH_ERROR; | |
9248 | } | |
9249 | ||
9250 | cleanup: | |
9251 | gfc_free_array_spec (current_as); | |
9252 | current_as = NULL; | |
9253 | return m; | |
9254 | ||
9255 | } | |
9256 | ||
e449e4dd | 9257 | |
7fd88f6e | 9258 | /* Match binding attributes. */ |
9259 | ||
9260 | static match | |
64e93293 | 9261 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc) |
7fd88f6e | 9262 | { |
9263 | bool found_passing = false; | |
64e93293 | 9264 | bool seen_ptr = false; |
fe9b08a2 | 9265 | match m = MATCH_YES; |
7fd88f6e | 9266 | |
df084314 | 9267 | /* Initialize to defaults. Do so even before the MATCH_NO check so that in |
7fd88f6e | 9268 | this case the defaults are in there. */ |
9269 | ba->access = ACCESS_UNKNOWN; | |
9270 | ba->pass_arg = NULL; | |
9271 | ba->pass_arg_num = 0; | |
9272 | ba->nopass = 0; | |
9273 | ba->non_overridable = 0; | |
61c3b81d | 9274 | ba->deferred = 0; |
fe9b08a2 | 9275 | ba->ppc = ppc; |
7fd88f6e | 9276 | |
9277 | /* If we find a comma, we believe there are binding attributes. */ | |
fe9b08a2 | 9278 | m = gfc_match_char (','); |
9279 | if (m == MATCH_NO) | |
9280 | goto done; | |
7fd88f6e | 9281 | |
9282 | do | |
9283 | { | |
e2f06a48 | 9284 | /* Access specifier. */ |
9285 | ||
9286 | m = gfc_match (" public"); | |
7fd88f6e | 9287 | if (m == MATCH_ERROR) |
9288 | goto error; | |
9289 | if (m == MATCH_YES) | |
9290 | { | |
e2f06a48 | 9291 | if (ba->access != ACCESS_UNKNOWN) |
7fd88f6e | 9292 | { |
e2f06a48 | 9293 | gfc_error ("Duplicate access-specifier at %C"); |
7fd88f6e | 9294 | goto error; |
9295 | } | |
9296 | ||
e2f06a48 | 9297 | ba->access = ACCESS_PUBLIC; |
7fd88f6e | 9298 | continue; |
9299 | } | |
9300 | ||
e2f06a48 | 9301 | m = gfc_match (" private"); |
7fd88f6e | 9302 | if (m == MATCH_ERROR) |
9303 | goto error; | |
9304 | if (m == MATCH_YES) | |
9305 | { | |
e2f06a48 | 9306 | if (ba->access != ACCESS_UNKNOWN) |
7fd88f6e | 9307 | { |
e2f06a48 | 9308 | gfc_error ("Duplicate access-specifier at %C"); |
7fd88f6e | 9309 | goto error; |
9310 | } | |
9311 | ||
e2f06a48 | 9312 | ba->access = ACCESS_PRIVATE; |
7fd88f6e | 9313 | continue; |
9314 | } | |
9315 | ||
e2f06a48 | 9316 | /* If inside GENERIC, the following is not allowed. */ |
9317 | if (!generic) | |
7fd88f6e | 9318 | { |
7fd88f6e | 9319 | |
e2f06a48 | 9320 | /* NOPASS flag. */ |
9321 | m = gfc_match (" nopass"); | |
9322 | if (m == MATCH_ERROR) | |
9323 | goto error; | |
9324 | if (m == MATCH_YES) | |
7fd88f6e | 9325 | { |
e2f06a48 | 9326 | if (found_passing) |
9327 | { | |
9328 | gfc_error ("Binding attributes already specify passing," | |
9329 | " illegal NOPASS at %C"); | |
9330 | goto error; | |
9331 | } | |
9332 | ||
9333 | found_passing = true; | |
9334 | ba->nopass = 1; | |
9335 | continue; | |
7fd88f6e | 9336 | } |
9337 | ||
e2f06a48 | 9338 | /* PASS possibly including argument. */ |
9339 | m = gfc_match (" pass"); | |
9340 | if (m == MATCH_ERROR) | |
9341 | goto error; | |
9342 | if (m == MATCH_YES) | |
7fd88f6e | 9343 | { |
e2f06a48 | 9344 | char arg[GFC_MAX_SYMBOL_LEN + 1]; |
9345 | ||
9346 | if (found_passing) | |
9347 | { | |
9348 | gfc_error ("Binding attributes already specify passing," | |
9349 | " illegal PASS at %C"); | |
9350 | goto error; | |
9351 | } | |
9352 | ||
9353 | m = gfc_match (" ( %n )", arg); | |
9354 | if (m == MATCH_ERROR) | |
9355 | goto error; | |
9356 | if (m == MATCH_YES) | |
fe9b08a2 | 9357 | ba->pass_arg = gfc_get_string (arg); |
e2f06a48 | 9358 | gcc_assert ((m == MATCH_YES) == (ba->pass_arg != NULL)); |
9359 | ||
9360 | found_passing = true; | |
9361 | ba->nopass = 0; | |
9362 | continue; | |
7fd88f6e | 9363 | } |
9364 | ||
64e93293 | 9365 | if (ppc) |
9366 | { | |
9367 | /* POINTER flag. */ | |
9368 | m = gfc_match (" pointer"); | |
9369 | if (m == MATCH_ERROR) | |
9370 | goto error; | |
9371 | if (m == MATCH_YES) | |
9372 | { | |
9373 | if (seen_ptr) | |
9374 | { | |
9375 | gfc_error ("Duplicate POINTER attribute at %C"); | |
9376 | goto error; | |
9377 | } | |
9378 | ||
9379 | seen_ptr = true; | |
64e93293 | 9380 | continue; |
9381 | } | |
9382 | } | |
9383 | else | |
9384 | { | |
9385 | /* NON_OVERRIDABLE flag. */ | |
9386 | m = gfc_match (" non_overridable"); | |
9387 | if (m == MATCH_ERROR) | |
9388 | goto error; | |
9389 | if (m == MATCH_YES) | |
9390 | { | |
9391 | if (ba->non_overridable) | |
9392 | { | |
9393 | gfc_error ("Duplicate NON_OVERRIDABLE at %C"); | |
9394 | goto error; | |
9395 | } | |
9396 | ||
9397 | ba->non_overridable = 1; | |
9398 | continue; | |
9399 | } | |
9400 | ||
9401 | /* DEFERRED flag. */ | |
9402 | m = gfc_match (" deferred"); | |
9403 | if (m == MATCH_ERROR) | |
9404 | goto error; | |
9405 | if (m == MATCH_YES) | |
9406 | { | |
9407 | if (ba->deferred) | |
9408 | { | |
9409 | gfc_error ("Duplicate DEFERRED at %C"); | |
9410 | goto error; | |
9411 | } | |
9412 | ||
9413 | ba->deferred = 1; | |
9414 | continue; | |
9415 | } | |
9416 | } | |
9417 | ||
7fd88f6e | 9418 | } |
9419 | ||
9420 | /* Nothing matching found. */ | |
e2f06a48 | 9421 | if (generic) |
9422 | gfc_error ("Expected access-specifier at %C"); | |
9423 | else | |
9424 | gfc_error ("Expected binding attribute at %C"); | |
7fd88f6e | 9425 | goto error; |
9426 | } | |
9427 | while (gfc_match_char (',') == MATCH_YES); | |
9428 | ||
61c3b81d | 9429 | /* NON_OVERRIDABLE and DEFERRED exclude themselves. */ |
9430 | if (ba->non_overridable && ba->deferred) | |
9431 | { | |
9432 | gfc_error ("NON_OVERRIDABLE and DEFERRED can't both appear at %C"); | |
9433 | goto error; | |
9434 | } | |
9435 | ||
fe9b08a2 | 9436 | m = MATCH_YES; |
9437 | ||
9438 | done: | |
e2f06a48 | 9439 | if (ba->access == ACCESS_UNKNOWN) |
9440 | ba->access = gfc_typebound_default_access; | |
9441 | ||
64e93293 | 9442 | if (ppc && !seen_ptr) |
9443 | { | |
9444 | gfc_error ("POINTER attribute is required for procedure pointer component" | |
9445 | " at %C"); | |
9446 | goto error; | |
9447 | } | |
9448 | ||
fe9b08a2 | 9449 | return m; |
7fd88f6e | 9450 | |
9451 | error: | |
7fd88f6e | 9452 | return MATCH_ERROR; |
9453 | } | |
9454 | ||
9455 | ||
9456 | /* Match a PROCEDURE specific binding inside a derived type. */ | |
9457 | ||
9458 | static match | |
9459 | match_procedure_in_type (void) | |
9460 | { | |
9461 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9462 | char target_buf[GFC_MAX_SYMBOL_LEN + 1]; | |
7a3aaef8 | 9463 | char* target = NULL, *ifc = NULL; |
4a12b9ba | 9464 | gfc_typebound_proc tb; |
7fd88f6e | 9465 | bool seen_colons; |
9466 | bool seen_attrs; | |
9467 | match m; | |
9468 | gfc_symtree* stree; | |
9469 | gfc_namespace* ns; | |
9470 | gfc_symbol* block; | |
7a3aaef8 | 9471 | int num; |
7fd88f6e | 9472 | |
9473 | /* Check current state. */ | |
9474 | gcc_assert (gfc_state_stack->state == COMP_DERIVED_CONTAINS); | |
9475 | block = gfc_state_stack->previous->sym; | |
9476 | gcc_assert (block); | |
9477 | ||
61c3b81d | 9478 | /* Try to match PROCEDURE(interface). */ |
7fd88f6e | 9479 | if (gfc_match (" (") == MATCH_YES) |
9480 | { | |
61c3b81d | 9481 | m = gfc_match_name (target_buf); |
9482 | if (m == MATCH_ERROR) | |
9483 | return m; | |
9484 | if (m != MATCH_YES) | |
9485 | { | |
0d2b3c9c | 9486 | gfc_error ("Interface-name expected after %<(%> at %C"); |
61c3b81d | 9487 | return MATCH_ERROR; |
9488 | } | |
9489 | ||
9490 | if (gfc_match (" )") != MATCH_YES) | |
9491 | { | |
0d2b3c9c | 9492 | gfc_error ("%<)%> expected at %C"); |
61c3b81d | 9493 | return MATCH_ERROR; |
9494 | } | |
9495 | ||
7a3aaef8 | 9496 | ifc = target_buf; |
7fd88f6e | 9497 | } |
9498 | ||
9499 | /* Construct the data structure. */ | |
b3d1387f | 9500 | memset (&tb, 0, sizeof (tb)); |
4a12b9ba | 9501 | tb.where = gfc_current_locus; |
7fd88f6e | 9502 | |
9503 | /* Match binding attributes. */ | |
4a12b9ba | 9504 | m = match_binding_attributes (&tb, false, false); |
7fd88f6e | 9505 | if (m == MATCH_ERROR) |
9506 | return m; | |
9507 | seen_attrs = (m == MATCH_YES); | |
9508 | ||
7a3aaef8 | 9509 | /* Check that attribute DEFERRED is given if an interface is specified. */ |
4a12b9ba | 9510 | if (tb.deferred && !ifc) |
61c3b81d | 9511 | { |
9512 | gfc_error ("Interface must be specified for DEFERRED binding at %C"); | |
9513 | return MATCH_ERROR; | |
9514 | } | |
4a12b9ba | 9515 | if (ifc && !tb.deferred) |
61c3b81d | 9516 | { |
9517 | gfc_error ("PROCEDURE(interface) at %C should be declared DEFERRED"); | |
9518 | return MATCH_ERROR; | |
9519 | } | |
9520 | ||
7fd88f6e | 9521 | /* Match the colons. */ |
9522 | m = gfc_match (" ::"); | |
9523 | if (m == MATCH_ERROR) | |
9524 | return m; | |
9525 | seen_colons = (m == MATCH_YES); | |
9526 | if (seen_attrs && !seen_colons) | |
9527 | { | |
0d2b3c9c | 9528 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
7fd88f6e | 9529 | return MATCH_ERROR; |
9530 | } | |
9531 | ||
8db94b3b | 9532 | /* Match the binding names. */ |
7a3aaef8 | 9533 | for(num=1;;num++) |
7fd88f6e | 9534 | { |
7a3aaef8 | 9535 | m = gfc_match_name (name); |
9536 | if (m == MATCH_ERROR) | |
9537 | return m; | |
9538 | if (m == MATCH_NO) | |
61c3b81d | 9539 | { |
7a3aaef8 | 9540 | gfc_error ("Expected binding name at %C"); |
61c3b81d | 9541 | return MATCH_ERROR; |
9542 | } | |
9543 | ||
60e19868 | 9544 | if (num>1 && !gfc_notify_std (GFC_STD_F2008, "PROCEDURE list at %C")) |
7a3aaef8 | 9545 | return MATCH_ERROR; |
7fd88f6e | 9546 | |
7a3aaef8 | 9547 | /* Try to match the '=> target', if it's there. */ |
9548 | target = ifc; | |
9549 | m = gfc_match (" =>"); | |
7fd88f6e | 9550 | if (m == MATCH_ERROR) |
9551 | return m; | |
7a3aaef8 | 9552 | if (m == MATCH_YES) |
7fd88f6e | 9553 | { |
4a12b9ba | 9554 | if (tb.deferred) |
7a3aaef8 | 9555 | { |
0d2b3c9c | 9556 | gfc_error ("%<=> target%> is invalid for DEFERRED binding at %C"); |
7a3aaef8 | 9557 | return MATCH_ERROR; |
9558 | } | |
9559 | ||
9560 | if (!seen_colons) | |
9561 | { | |
0d2b3c9c | 9562 | gfc_error ("%<::%> needed in PROCEDURE binding with explicit target" |
7a3aaef8 | 9563 | " at %C"); |
9564 | return MATCH_ERROR; | |
9565 | } | |
9566 | ||
9567 | m = gfc_match_name (target_buf); | |
9568 | if (m == MATCH_ERROR) | |
9569 | return m; | |
9570 | if (m == MATCH_NO) | |
9571 | { | |
0d2b3c9c | 9572 | gfc_error ("Expected binding target after %<=>%> at %C"); |
7a3aaef8 | 9573 | return MATCH_ERROR; |
9574 | } | |
9575 | target = target_buf; | |
7fd88f6e | 9576 | } |
7fd88f6e | 9577 | |
7a3aaef8 | 9578 | /* If no target was found, it has the same name as the binding. */ |
9579 | if (!target) | |
9580 | target = name; | |
7fd88f6e | 9581 | |
7a3aaef8 | 9582 | /* Get the namespace to insert the symbols into. */ |
9583 | ns = block->f2k_derived; | |
9584 | gcc_assert (ns); | |
7fd88f6e | 9585 | |
7a3aaef8 | 9586 | /* If the binding is DEFERRED, check that the containing type is ABSTRACT. */ |
4a12b9ba | 9587 | if (tb.deferred && !block->attr.abstract) |
7a3aaef8 | 9588 | { |
716da296 | 9589 | gfc_error ("Type %qs containing DEFERRED binding at %C " |
7a3aaef8 | 9590 | "is not ABSTRACT", block->name); |
9591 | return MATCH_ERROR; | |
9592 | } | |
7fd88f6e | 9593 | |
7a3aaef8 | 9594 | /* See if we already have a binding with this name in the symtree which |
9834e1b6 | 9595 | would be an error. If a GENERIC already targeted this binding, it may |
7a3aaef8 | 9596 | be already there but then typebound is still NULL. */ |
9597 | stree = gfc_find_symtree (ns->tb_sym_root, name); | |
e204cb62 | 9598 | if (stree && stree->n.tb) |
7a3aaef8 | 9599 | { |
716da296 | 9600 | gfc_error ("There is already a procedure with binding name %qs for " |
9601 | "the derived type %qs at %C", name, block->name); | |
7a3aaef8 | 9602 | return MATCH_ERROR; |
9603 | } | |
61c3b81d | 9604 | |
7a3aaef8 | 9605 | /* Insert it and set attributes. */ |
7fd88f6e | 9606 | |
e204cb62 | 9607 | if (!stree) |
9608 | { | |
9609 | stree = gfc_new_symtree (&ns->tb_sym_root, name); | |
9610 | gcc_assert (stree); | |
9611 | } | |
4a12b9ba | 9612 | stree->n.tb = gfc_get_typebound_proc (&tb); |
3323e9b1 | 9613 | |
4a12b9ba | 9614 | if (gfc_get_sym_tree (target, gfc_current_ns, &stree->n.tb->u.specific, |
9615 | false)) | |
7a3aaef8 | 9616 | return MATCH_ERROR; |
4a12b9ba | 9617 | gfc_set_sym_referenced (stree->n.tb->u.specific->n.sym); |
8db94b3b | 9618 | |
7a3aaef8 | 9619 | if (gfc_match_eos () == MATCH_YES) |
9620 | return MATCH_YES; | |
9621 | if (gfc_match_char (',') != MATCH_YES) | |
9622 | goto syntax; | |
3323e9b1 | 9623 | } |
7fd88f6e | 9624 | |
7a3aaef8 | 9625 | syntax: |
9626 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
9627 | return MATCH_ERROR; | |
7fd88f6e | 9628 | } |
9629 | ||
9630 | ||
e2f06a48 | 9631 | /* Match a GENERIC procedure binding inside a derived type. */ |
9632 | ||
9633 | match | |
9634 | gfc_match_generic (void) | |
9635 | { | |
9636 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
a36eb9ee | 9637 | char bind_name[GFC_MAX_SYMBOL_LEN + 16]; /* Allow space for OPERATOR(...). */ |
e2f06a48 | 9638 | gfc_symbol* block; |
9639 | gfc_typebound_proc tbattr; /* Used for match_binding_attributes. */ | |
9640 | gfc_typebound_proc* tb; | |
e2f06a48 | 9641 | gfc_namespace* ns; |
a36eb9ee | 9642 | interface_type op_type; |
9643 | gfc_intrinsic_op op; | |
e2f06a48 | 9644 | match m; |
9645 | ||
9646 | /* Check current state. */ | |
9647 | if (gfc_current_state () == COMP_DERIVED) | |
9648 | { | |
9649 | gfc_error ("GENERIC at %C must be inside a derived-type CONTAINS"); | |
9650 | return MATCH_ERROR; | |
9651 | } | |
9652 | if (gfc_current_state () != COMP_DERIVED_CONTAINS) | |
9653 | return MATCH_NO; | |
9654 | block = gfc_state_stack->previous->sym; | |
9655 | ns = block->f2k_derived; | |
9656 | gcc_assert (block && ns); | |
9657 | ||
b3d1387f | 9658 | memset (&tbattr, 0, sizeof (tbattr)); |
9659 | tbattr.where = gfc_current_locus; | |
9660 | ||
e2f06a48 | 9661 | /* See if we get an access-specifier. */ |
64e93293 | 9662 | m = match_binding_attributes (&tbattr, true, false); |
e2f06a48 | 9663 | if (m == MATCH_ERROR) |
9664 | goto error; | |
9665 | ||
9666 | /* Now the colons, those are required. */ | |
9667 | if (gfc_match (" ::") != MATCH_YES) | |
9668 | { | |
0d2b3c9c | 9669 | gfc_error ("Expected %<::%> at %C"); |
e2f06a48 | 9670 | goto error; |
9671 | } | |
9672 | ||
a36eb9ee | 9673 | /* Match the binding name; depending on type (operator / generic) format |
9674 | it for future error messages into bind_name. */ | |
8db94b3b | 9675 | |
a36eb9ee | 9676 | m = gfc_match_generic_spec (&op_type, name, &op); |
e2f06a48 | 9677 | if (m == MATCH_ERROR) |
9678 | return MATCH_ERROR; | |
9679 | if (m == MATCH_NO) | |
9680 | { | |
a36eb9ee | 9681 | gfc_error ("Expected generic name or operator descriptor at %C"); |
e2f06a48 | 9682 | goto error; |
9683 | } | |
9684 | ||
a36eb9ee | 9685 | switch (op_type) |
e2f06a48 | 9686 | { |
a36eb9ee | 9687 | case INTERFACE_GENERIC: |
9f732c4e | 9688 | case INTERFACE_DTIO: |
a36eb9ee | 9689 | snprintf (bind_name, sizeof (bind_name), "%s", name); |
9690 | break; | |
8db94b3b | 9691 | |
a36eb9ee | 9692 | case INTERFACE_USER_OP: |
9693 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(.%s.)", name); | |
9694 | break; | |
8db94b3b | 9695 | |
a36eb9ee | 9696 | case INTERFACE_INTRINSIC_OP: |
9697 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(%s)", | |
9698 | gfc_op2string (op)); | |
9699 | break; | |
9700 | ||
7e8f55c1 | 9701 | case INTERFACE_NAMELESS: |
9702 | gfc_error ("Malformed GENERIC statement at %C"); | |
9703 | goto error; | |
9704 | break; | |
9705 | ||
a36eb9ee | 9706 | default: |
9707 | gcc_unreachable (); | |
9708 | } | |
3323e9b1 | 9709 | |
a36eb9ee | 9710 | /* Match the required =>. */ |
9711 | if (gfc_match (" =>") != MATCH_YES) | |
9712 | { | |
0d2b3c9c | 9713 | gfc_error ("Expected %<=>%> at %C"); |
a36eb9ee | 9714 | goto error; |
9715 | } | |
8db94b3b | 9716 | |
a36eb9ee | 9717 | /* Try to find existing GENERIC binding with this name / for this operator; |
9718 | if there is something, check that it is another GENERIC and then extend | |
9719 | it rather than building a new node. Otherwise, create it and put it | |
9720 | at the right position. */ | |
9721 | ||
9722 | switch (op_type) | |
9723 | { | |
9f732c4e | 9724 | case INTERFACE_DTIO: |
a36eb9ee | 9725 | case INTERFACE_USER_OP: |
9726 | case INTERFACE_GENERIC: | |
9727 | { | |
9728 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
9729 | gfc_symtree* st; | |
9730 | ||
9731 | st = gfc_find_symtree (is_op ? ns->tb_uop_root : ns->tb_sym_root, name); | |
f7b2c82b | 9732 | tb = st ? st->n.tb : NULL; |
a36eb9ee | 9733 | break; |
9734 | } | |
9735 | ||
9736 | case INTERFACE_INTRINSIC_OP: | |
9737 | tb = ns->tb_op[op]; | |
9738 | break; | |
9739 | ||
9740 | default: | |
9741 | gcc_unreachable (); | |
9742 | } | |
9743 | ||
9744 | if (tb) | |
9745 | { | |
3323e9b1 | 9746 | if (!tb->is_generic) |
e2f06a48 | 9747 | { |
a36eb9ee | 9748 | gcc_assert (op_type == INTERFACE_GENERIC); |
e2f06a48 | 9749 | gfc_error ("There's already a non-generic procedure with binding name" |
716da296 | 9750 | " %qs for the derived type %qs at %C", |
a36eb9ee | 9751 | bind_name, block->name); |
e2f06a48 | 9752 | goto error; |
9753 | } | |
9754 | ||
e2f06a48 | 9755 | if (tb->access != tbattr.access) |
9756 | { | |
9757 | gfc_error ("Binding at %C must have the same access as already" | |
716da296 | 9758 | " defined binding %qs", bind_name); |
e2f06a48 | 9759 | goto error; |
9760 | } | |
9761 | } | |
9762 | else | |
9763 | { | |
4a12b9ba | 9764 | tb = gfc_get_typebound_proc (NULL); |
e2f06a48 | 9765 | tb->where = gfc_current_locus; |
9766 | tb->access = tbattr.access; | |
9767 | tb->is_generic = 1; | |
9768 | tb->u.generic = NULL; | |
a36eb9ee | 9769 | |
9770 | switch (op_type) | |
9771 | { | |
9f732c4e | 9772 | case INTERFACE_DTIO: |
a36eb9ee | 9773 | case INTERFACE_GENERIC: |
9774 | case INTERFACE_USER_OP: | |
9775 | { | |
9776 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
f7b2c82b | 9777 | gfc_symtree* st = gfc_get_tbp_symtree (is_op ? &ns->tb_uop_root : |
9778 | &ns->tb_sym_root, name); | |
a36eb9ee | 9779 | gcc_assert (st); |
9780 | st->n.tb = tb; | |
9781 | ||
9782 | break; | |
9783 | } | |
8db94b3b | 9784 | |
a36eb9ee | 9785 | case INTERFACE_INTRINSIC_OP: |
9786 | ns->tb_op[op] = tb; | |
9787 | break; | |
9788 | ||
9789 | default: | |
9790 | gcc_unreachable (); | |
9791 | } | |
e2f06a48 | 9792 | } |
9793 | ||
9794 | /* Now, match all following names as specific targets. */ | |
9795 | do | |
9796 | { | |
9797 | gfc_symtree* target_st; | |
9798 | gfc_tbp_generic* target; | |
9799 | ||
9800 | m = gfc_match_name (name); | |
9801 | if (m == MATCH_ERROR) | |
9802 | goto error; | |
9803 | if (m == MATCH_NO) | |
9804 | { | |
9805 | gfc_error ("Expected specific binding name at %C"); | |
9806 | goto error; | |
9807 | } | |
9808 | ||
3323e9b1 | 9809 | target_st = gfc_get_tbp_symtree (&ns->tb_sym_root, name); |
e2f06a48 | 9810 | |
9811 | /* See if this is a duplicate specification. */ | |
9812 | for (target = tb->u.generic; target; target = target->next) | |
9813 | if (target_st == target->specific_st) | |
9814 | { | |
716da296 | 9815 | gfc_error ("%qs already defined as specific binding for the" |
9816 | " generic %qs at %C", name, bind_name); | |
e2f06a48 | 9817 | goto error; |
9818 | } | |
9819 | ||
e2f06a48 | 9820 | target = gfc_get_tbp_generic (); |
9821 | target->specific_st = target_st; | |
9822 | target->specific = NULL; | |
9823 | target->next = tb->u.generic; | |
5c0f7d99 | 9824 | target->is_operator = ((op_type == INTERFACE_USER_OP) |
9825 | || (op_type == INTERFACE_INTRINSIC_OP)); | |
e2f06a48 | 9826 | tb->u.generic = target; |
9827 | } | |
9828 | while (gfc_match (" ,") == MATCH_YES); | |
9829 | ||
9830 | /* Here should be the end. */ | |
9831 | if (gfc_match_eos () != MATCH_YES) | |
9832 | { | |
9833 | gfc_error ("Junk after GENERIC binding at %C"); | |
9834 | goto error; | |
9835 | } | |
9836 | ||
9837 | return MATCH_YES; | |
9838 | ||
9839 | error: | |
9840 | return MATCH_ERROR; | |
9841 | } | |
9842 | ||
9843 | ||
223f0f57 | 9844 | /* Match a FINAL declaration inside a derived type. */ |
9845 | ||
9846 | match | |
9847 | gfc_match_final_decl (void) | |
9848 | { | |
9849 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9850 | gfc_symbol* sym; | |
9851 | match m; | |
9852 | gfc_namespace* module_ns; | |
9853 | bool first, last; | |
7fd88f6e | 9854 | gfc_symbol* block; |
223f0f57 | 9855 | |
519651c1 | 9856 | if (gfc_current_form == FORM_FREE) |
9857 | { | |
9858 | char c = gfc_peek_ascii_char (); | |
9859 | if (!gfc_is_whitespace (c) && c != ':') | |
9860 | return MATCH_NO; | |
9861 | } | |
8db94b3b | 9862 | |
7fd88f6e | 9863 | if (gfc_state_stack->state != COMP_DERIVED_CONTAINS) |
223f0f57 | 9864 | { |
519651c1 | 9865 | if (gfc_current_form == FORM_FIXED) |
9866 | return MATCH_NO; | |
9867 | ||
223f0f57 | 9868 | gfc_error ("FINAL declaration at %C must be inside a derived type " |
7fd88f6e | 9869 | "CONTAINS section"); |
223f0f57 | 9870 | return MATCH_ERROR; |
9871 | } | |
9872 | ||
7fd88f6e | 9873 | block = gfc_state_stack->previous->sym; |
9874 | gcc_assert (block); | |
223f0f57 | 9875 | |
7fd88f6e | 9876 | if (!gfc_state_stack->previous || !gfc_state_stack->previous->previous |
9877 | || gfc_state_stack->previous->previous->state != COMP_MODULE) | |
223f0f57 | 9878 | { |
9879 | gfc_error ("Derived type declaration with FINAL at %C must be in the" | |
9880 | " specification part of a MODULE"); | |
9881 | return MATCH_ERROR; | |
9882 | } | |
9883 | ||
9884 | module_ns = gfc_current_ns; | |
9885 | gcc_assert (module_ns); | |
9886 | gcc_assert (module_ns->proc_name->attr.flavor == FL_MODULE); | |
9887 | ||
9888 | /* Match optional ::, don't care about MATCH_YES or MATCH_NO. */ | |
9889 | if (gfc_match (" ::") == MATCH_ERROR) | |
9890 | return MATCH_ERROR; | |
9891 | ||
9892 | /* Match the sequence of procedure names. */ | |
9893 | first = true; | |
9894 | last = false; | |
9895 | do | |
9896 | { | |
9897 | gfc_finalizer* f; | |
9898 | ||
9899 | if (first && gfc_match_eos () == MATCH_YES) | |
9900 | { | |
9901 | gfc_error ("Empty FINAL at %C"); | |
9902 | return MATCH_ERROR; | |
9903 | } | |
9904 | ||
9905 | m = gfc_match_name (name); | |
9906 | if (m == MATCH_NO) | |
9907 | { | |
9908 | gfc_error ("Expected module procedure name at %C"); | |
9909 | return MATCH_ERROR; | |
9910 | } | |
9911 | else if (m != MATCH_YES) | |
9912 | return MATCH_ERROR; | |
9913 | ||
9914 | if (gfc_match_eos () == MATCH_YES) | |
9915 | last = true; | |
9916 | if (!last && gfc_match_char (',') != MATCH_YES) | |
9917 | { | |
0d2b3c9c | 9918 | gfc_error ("Expected %<,%> at %C"); |
223f0f57 | 9919 | return MATCH_ERROR; |
9920 | } | |
9921 | ||
9922 | if (gfc_get_symbol (name, module_ns, &sym)) | |
9923 | { | |
716da296 | 9924 | gfc_error ("Unknown procedure name %qs at %C", name); |
223f0f57 | 9925 | return MATCH_ERROR; |
9926 | } | |
9927 | ||
9928 | /* Mark the symbol as module procedure. */ | |
9929 | if (sym->attr.proc != PROC_MODULE | |
60e19868 | 9930 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
223f0f57 | 9931 | return MATCH_ERROR; |
9932 | ||
9933 | /* Check if we already have this symbol in the list, this is an error. */ | |
7fd88f6e | 9934 | for (f = block->f2k_derived->finalizers; f; f = f->next) |
e449e4dd | 9935 | if (f->proc_sym == sym) |
223f0f57 | 9936 | { |
716da296 | 9937 | gfc_error ("%qs at %C is already defined as FINAL procedure!", |
223f0f57 | 9938 | name); |
9939 | return MATCH_ERROR; | |
9940 | } | |
9941 | ||
9942 | /* Add this symbol to the list of finalizers. */ | |
7fd88f6e | 9943 | gcc_assert (block->f2k_derived); |
c77c84dd | 9944 | sym->refs++; |
48d8ad5a | 9945 | f = XCNEW (gfc_finalizer); |
e449e4dd | 9946 | f->proc_sym = sym; |
9947 | f->proc_tree = NULL; | |
223f0f57 | 9948 | f->where = gfc_current_locus; |
7fd88f6e | 9949 | f->next = block->f2k_derived->finalizers; |
9950 | block->f2k_derived->finalizers = f; | |
223f0f57 | 9951 | |
9952 | first = false; | |
9953 | } | |
9954 | while (!last); | |
9955 | ||
9956 | return MATCH_YES; | |
9957 | } | |
36b0a1b0 | 9958 | |
9959 | ||
9960 | const ext_attr_t ext_attr_list[] = { | |
fa76a552 | 9961 | { "dllimport", EXT_ATTR_DLLIMPORT, "dllimport" }, |
9962 | { "dllexport", EXT_ATTR_DLLEXPORT, "dllexport" }, | |
9963 | { "cdecl", EXT_ATTR_CDECL, "cdecl" }, | |
9964 | { "stdcall", EXT_ATTR_STDCALL, "stdcall" }, | |
9965 | { "fastcall", EXT_ATTR_FASTCALL, "fastcall" }, | |
9966 | { "no_arg_check", EXT_ATTR_NO_ARG_CHECK, NULL }, | |
9967 | { NULL, EXT_ATTR_LAST, NULL } | |
36b0a1b0 | 9968 | }; |
9969 | ||
9970 | /* Match a !GCC$ ATTRIBUTES statement of the form: | |
9971 | !GCC$ ATTRIBUTES attribute-list :: var-name [, var-name] ... | |
9972 | When we come here, we have already matched the !GCC$ ATTRIBUTES string. | |
9973 | ||
9974 | TODO: We should support all GCC attributes using the same syntax for | |
9975 | the attribute list, i.e. the list in C | |
9976 | __attributes(( attribute-list )) | |
9977 | matches then | |
9978 | !GCC$ ATTRIBUTES attribute-list :: | |
9979 | Cf. c-parser.c's c_parser_attributes; the data can then directly be | |
9980 | saved into a TREE. | |
9981 | ||
9982 | As there is absolutely no risk of confusion, we should never return | |
9983 | MATCH_NO. */ | |
9984 | match | |
9985 | gfc_match_gcc_attributes (void) | |
8db94b3b | 9986 | { |
36b0a1b0 | 9987 | symbol_attribute attr; |
9988 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9989 | unsigned id; | |
9990 | gfc_symbol *sym; | |
9991 | match m; | |
9992 | ||
9993 | gfc_clear_attr (&attr); | |
9994 | for(;;) | |
9995 | { | |
9996 | char ch; | |
9997 | ||
9998 | if (gfc_match_name (name) != MATCH_YES) | |
9999 | return MATCH_ERROR; | |
10000 | ||
10001 | for (id = 0; id < EXT_ATTR_LAST; id++) | |
10002 | if (strcmp (name, ext_attr_list[id].name) == 0) | |
10003 | break; | |
10004 | ||
10005 | if (id == EXT_ATTR_LAST) | |
10006 | { | |
10007 | gfc_error ("Unknown attribute in !GCC$ ATTRIBUTES statement at %C"); | |
10008 | return MATCH_ERROR; | |
10009 | } | |
10010 | ||
60e19868 | 10011 | if (!gfc_add_ext_attribute (&attr, (ext_attr_id_t)id, &gfc_current_locus)) |
36b0a1b0 | 10012 | return MATCH_ERROR; |
10013 | ||
10014 | gfc_gobble_whitespace (); | |
10015 | ch = gfc_next_ascii_char (); | |
10016 | if (ch == ':') | |
10017 | { | |
10018 | /* This is the successful exit condition for the loop. */ | |
10019 | if (gfc_next_ascii_char () == ':') | |
10020 | break; | |
10021 | } | |
10022 | ||
10023 | if (ch == ',') | |
10024 | continue; | |
10025 | ||
10026 | goto syntax; | |
10027 | } | |
10028 | ||
10029 | if (gfc_match_eos () == MATCH_YES) | |
10030 | goto syntax; | |
10031 | ||
10032 | for(;;) | |
10033 | { | |
10034 | m = gfc_match_name (name); | |
10035 | if (m != MATCH_YES) | |
10036 | return m; | |
10037 | ||
10038 | if (find_special (name, &sym, true)) | |
10039 | return MATCH_ERROR; | |
8db94b3b | 10040 | |
36b0a1b0 | 10041 | sym->attr.ext_attr |= attr.ext_attr; |
10042 | ||
10043 | if (gfc_match_eos () == MATCH_YES) | |
10044 | break; | |
10045 | ||
10046 | if (gfc_match_char (',') != MATCH_YES) | |
10047 | goto syntax; | |
10048 | } | |
10049 | ||
10050 | return MATCH_YES; | |
10051 | ||
10052 | syntax: | |
10053 | gfc_error ("Syntax error in !GCC$ ATTRIBUTES statement at %C"); | |
10054 | return MATCH_ERROR; | |
10055 | } |