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6de9cd9a | 1 | /* Declaration statement matcher |
5624e564 | 2 | Copyright (C) 2002-2015 Free Software Foundation, Inc. |
6de9cd9a DN |
3 | Contributed by Andy Vaught |
4 | ||
9fc4d79b | 5 | This file is part of GCC. |
6de9cd9a | 6 | |
9fc4d79b TS |
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 | |
d234d788 | 9 | Software Foundation; either version 3, or (at your option) any later |
9fc4d79b | 10 | version. |
6de9cd9a | 11 | |
9fc4d79b TS |
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. | |
6de9cd9a DN |
16 | |
17 | You should have received a copy of the GNU General Public License | |
d234d788 NC |
18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
6de9cd9a | 20 | |
6de9cd9a | 21 | #include "config.h" |
d22e4895 | 22 | #include "system.h" |
953bee7c | 23 | #include "coretypes.h" |
2adfab87 AM |
24 | #include "options.h" |
25 | #include "tree.h" | |
6de9cd9a | 26 | #include "gfortran.h" |
2adfab87 | 27 | #include "stringpool.h" |
6de9cd9a DN |
28 | #include "match.h" |
29 | #include "parse.h" | |
b7e75771 | 30 | #include "constructor.h" |
40e23961 | 31 | #include "alias.h" |
ca39e6f2 FXC |
32 | |
33 | /* Macros to access allocate memory for gfc_data_variable, | |
34 | gfc_data_value and gfc_data. */ | |
ece3f663 KG |
35 | #define gfc_get_data_variable() XCNEW (gfc_data_variable) |
36 | #define gfc_get_data_value() XCNEW (gfc_data_value) | |
37 | #define gfc_get_data() XCNEW (gfc_data) | |
ca39e6f2 FXC |
38 | |
39 | ||
524af0d6 | 40 | static bool set_binding_label (const char **, const char *, int); |
62603fae JB |
41 | |
42 | ||
2054fc29 | 43 | /* This flag is set if an old-style length selector is matched |
6de9cd9a DN |
44 | during a type-declaration statement. */ |
45 | ||
46 | static int old_char_selector; | |
47 | ||
46fa431d | 48 | /* When variables acquire types and attributes from a declaration |
6de9cd9a DN |
49 | statement, they get them from the following static variables. The |
50 | first part of a declaration sets these variables and the second | |
51 | part copies these into symbol structures. */ | |
52 | ||
53 | static gfc_typespec current_ts; | |
54 | ||
55 | static symbol_attribute current_attr; | |
56 | static gfc_array_spec *current_as; | |
57 | static int colon_seen; | |
58 | ||
a8b3b0b6 | 59 | /* The current binding label (if any). */ |
9975a30b | 60 | static const char* curr_binding_label; |
a8b3b0b6 CR |
61 | /* Need to know how many identifiers are on the current data declaration |
62 | line in case we're given the BIND(C) attribute with a NAME= specifier. */ | |
63 | static int num_idents_on_line; | |
64 | /* Need to know if a NAME= specifier was found during gfc_match_bind_c so we | |
65 | can supply a name if the curr_binding_label is nil and NAME= was not. */ | |
66 | static int has_name_equals = 0; | |
67 | ||
25d8f0a2 TS |
68 | /* Initializer of the previous enumerator. */ |
69 | ||
70 | static gfc_expr *last_initializer; | |
71 | ||
72 | /* History of all the enumerators is maintained, so that | |
73 | kind values of all the enumerators could be updated depending | |
74 | upon the maximum initialized value. */ | |
75 | ||
76 | typedef struct enumerator_history | |
77 | { | |
78 | gfc_symbol *sym; | |
79 | gfc_expr *initializer; | |
80 | struct enumerator_history *next; | |
81 | } | |
82 | enumerator_history; | |
83 | ||
84 | /* Header of enum history chain. */ | |
85 | ||
86 | static enumerator_history *enum_history = NULL; | |
87 | ||
88 | /* Pointer of enum history node containing largest initializer. */ | |
89 | ||
90 | static enumerator_history *max_enum = NULL; | |
91 | ||
6de9cd9a DN |
92 | /* gfc_new_block points to the symbol of a newly matched block. */ |
93 | ||
94 | gfc_symbol *gfc_new_block; | |
95 | ||
1c8bcdf7 | 96 | bool gfc_matching_function; |
e2d29968 | 97 | |
6de9cd9a | 98 | |
294fbfc8 TS |
99 | /********************* DATA statement subroutines *********************/ |
100 | ||
2220652d PT |
101 | static bool in_match_data = false; |
102 | ||
103 | bool | |
104 | gfc_in_match_data (void) | |
105 | { | |
106 | return in_match_data; | |
107 | } | |
108 | ||
ca39e6f2 FXC |
109 | static void |
110 | set_in_match_data (bool set_value) | |
2220652d PT |
111 | { |
112 | in_match_data = set_value; | |
113 | } | |
114 | ||
294fbfc8 TS |
115 | /* Free a gfc_data_variable structure and everything beneath it. */ |
116 | ||
117 | static void | |
636dff67 | 118 | free_variable (gfc_data_variable *p) |
294fbfc8 TS |
119 | { |
120 | gfc_data_variable *q; | |
121 | ||
122 | for (; p; p = q) | |
123 | { | |
124 | q = p->next; | |
125 | gfc_free_expr (p->expr); | |
126 | gfc_free_iterator (&p->iter, 0); | |
127 | free_variable (p->list); | |
cede9502 | 128 | free (p); |
294fbfc8 TS |
129 | } |
130 | } | |
131 | ||
132 | ||
133 | /* Free a gfc_data_value structure and everything beneath it. */ | |
134 | ||
135 | static void | |
636dff67 | 136 | free_value (gfc_data_value *p) |
294fbfc8 TS |
137 | { |
138 | gfc_data_value *q; | |
139 | ||
140 | for (; p; p = q) | |
141 | { | |
142 | q = p->next; | |
c9d75a48 | 143 | mpz_clear (p->repeat); |
294fbfc8 | 144 | gfc_free_expr (p->expr); |
cede9502 | 145 | free (p); |
294fbfc8 TS |
146 | } |
147 | } | |
148 | ||
149 | ||
150 | /* Free a list of gfc_data structures. */ | |
151 | ||
152 | void | |
636dff67 | 153 | gfc_free_data (gfc_data *p) |
294fbfc8 TS |
154 | { |
155 | gfc_data *q; | |
156 | ||
157 | for (; p; p = q) | |
158 | { | |
159 | q = p->next; | |
294fbfc8 TS |
160 | free_variable (p->var); |
161 | free_value (p->value); | |
cede9502 | 162 | free (p); |
294fbfc8 TS |
163 | } |
164 | } | |
165 | ||
166 | ||
a9f6f1f2 | 167 | /* Free all data in a namespace. */ |
636dff67 | 168 | |
a9f6f1f2 | 169 | static void |
66e4ab31 | 170 | gfc_free_data_all (gfc_namespace *ns) |
a9f6f1f2 JD |
171 | { |
172 | gfc_data *d; | |
173 | ||
174 | for (;ns->data;) | |
175 | { | |
176 | d = ns->data->next; | |
cede9502 | 177 | free (ns->data); |
a9f6f1f2 JD |
178 | ns->data = d; |
179 | } | |
180 | } | |
181 | ||
d5e2274d SB |
182 | /* Reject data parsed since the last restore point was marked. */ |
183 | ||
184 | void | |
185 | gfc_reject_data (gfc_namespace *ns) | |
186 | { | |
187 | gfc_data *d; | |
188 | ||
189 | while (ns->data && ns->data != ns->old_data) | |
190 | { | |
191 | d = ns->data->next; | |
192 | free (ns->data); | |
193 | ns->data = d; | |
194 | } | |
195 | } | |
a9f6f1f2 | 196 | |
294fbfc8 TS |
197 | static match var_element (gfc_data_variable *); |
198 | ||
199 | /* Match a list of variables terminated by an iterator and a right | |
200 | parenthesis. */ | |
201 | ||
202 | static match | |
636dff67 | 203 | var_list (gfc_data_variable *parent) |
294fbfc8 TS |
204 | { |
205 | gfc_data_variable *tail, var; | |
206 | match m; | |
207 | ||
208 | m = var_element (&var); | |
209 | if (m == MATCH_ERROR) | |
210 | return MATCH_ERROR; | |
211 | if (m == MATCH_NO) | |
212 | goto syntax; | |
213 | ||
214 | tail = gfc_get_data_variable (); | |
215 | *tail = var; | |
216 | ||
217 | parent->list = tail; | |
218 | ||
219 | for (;;) | |
220 | { | |
221 | if (gfc_match_char (',') != MATCH_YES) | |
222 | goto syntax; | |
223 | ||
224 | m = gfc_match_iterator (&parent->iter, 1); | |
225 | if (m == MATCH_YES) | |
226 | break; | |
227 | if (m == MATCH_ERROR) | |
228 | return MATCH_ERROR; | |
229 | ||
230 | m = var_element (&var); | |
231 | if (m == MATCH_ERROR) | |
232 | return MATCH_ERROR; | |
233 | if (m == MATCH_NO) | |
234 | goto syntax; | |
235 | ||
236 | tail->next = gfc_get_data_variable (); | |
237 | tail = tail->next; | |
238 | ||
239 | *tail = var; | |
240 | } | |
241 | ||
242 | if (gfc_match_char (')') != MATCH_YES) | |
243 | goto syntax; | |
244 | return MATCH_YES; | |
245 | ||
246 | syntax: | |
247 | gfc_syntax_error (ST_DATA); | |
248 | return MATCH_ERROR; | |
249 | } | |
250 | ||
251 | ||
252 | /* Match a single element in a data variable list, which can be a | |
253 | variable-iterator list. */ | |
254 | ||
255 | static match | |
7b901ac4 | 256 | var_element (gfc_data_variable *new_var) |
294fbfc8 TS |
257 | { |
258 | match m; | |
259 | gfc_symbol *sym; | |
260 | ||
7b901ac4 | 261 | memset (new_var, 0, sizeof (gfc_data_variable)); |
294fbfc8 TS |
262 | |
263 | if (gfc_match_char ('(') == MATCH_YES) | |
7b901ac4 | 264 | return var_list (new_var); |
294fbfc8 | 265 | |
7b901ac4 | 266 | m = gfc_match_variable (&new_var->expr, 0); |
294fbfc8 TS |
267 | if (m != MATCH_YES) |
268 | return m; | |
269 | ||
7b901ac4 | 270 | sym = new_var->expr->symtree->n.sym; |
294fbfc8 | 271 | |
f37e928c | 272 | /* Symbol should already have an associated type. */ |
524af0d6 | 273 | if (!gfc_check_symbol_typed (sym, gfc_current_ns, false, gfc_current_locus)) |
f37e928c DK |
274 | return MATCH_ERROR; |
275 | ||
636dff67 SK |
276 | if (!sym->attr.function && gfc_current_ns->parent |
277 | && gfc_current_ns->parent == sym->ns) | |
294fbfc8 | 278 | { |
c4100eae | 279 | gfc_error ("Host associated variable %qs may not be in the DATA " |
e25a0da3 | 280 | "statement at %C", sym->name); |
294fbfc8 TS |
281 | return MATCH_ERROR; |
282 | } | |
283 | ||
4075a94e | 284 | if (gfc_current_state () != COMP_BLOCK_DATA |
636dff67 | 285 | && sym->attr.in_common |
524af0d6 | 286 | && !gfc_notify_std (GFC_STD_GNU, "initialization of " |
a4d9b221 | 287 | "common block variable %qs in DATA statement at %C", |
524af0d6 | 288 | sym->name)) |
4075a94e | 289 | return MATCH_ERROR; |
294fbfc8 | 290 | |
524af0d6 | 291 | if (!gfc_add_data (&sym->attr, sym->name, &new_var->expr->where)) |
294fbfc8 TS |
292 | return MATCH_ERROR; |
293 | ||
294 | return MATCH_YES; | |
295 | } | |
296 | ||
297 | ||
298 | /* Match the top-level list of data variables. */ | |
299 | ||
300 | static match | |
636dff67 | 301 | top_var_list (gfc_data *d) |
294fbfc8 | 302 | { |
7b901ac4 | 303 | gfc_data_variable var, *tail, *new_var; |
294fbfc8 TS |
304 | match m; |
305 | ||
306 | tail = NULL; | |
307 | ||
308 | for (;;) | |
309 | { | |
310 | m = var_element (&var); | |
311 | if (m == MATCH_NO) | |
312 | goto syntax; | |
313 | if (m == MATCH_ERROR) | |
314 | return MATCH_ERROR; | |
315 | ||
7b901ac4 KG |
316 | new_var = gfc_get_data_variable (); |
317 | *new_var = var; | |
294fbfc8 TS |
318 | |
319 | if (tail == NULL) | |
7b901ac4 | 320 | d->var = new_var; |
294fbfc8 | 321 | else |
7b901ac4 | 322 | tail->next = new_var; |
294fbfc8 | 323 | |
7b901ac4 | 324 | tail = new_var; |
294fbfc8 TS |
325 | |
326 | if (gfc_match_char ('/') == MATCH_YES) | |
327 | break; | |
328 | if (gfc_match_char (',') != MATCH_YES) | |
329 | goto syntax; | |
330 | } | |
331 | ||
332 | return MATCH_YES; | |
333 | ||
334 | syntax: | |
335 | gfc_syntax_error (ST_DATA); | |
a9f6f1f2 | 336 | gfc_free_data_all (gfc_current_ns); |
294fbfc8 TS |
337 | return MATCH_ERROR; |
338 | } | |
339 | ||
340 | ||
341 | static match | |
636dff67 | 342 | match_data_constant (gfc_expr **result) |
294fbfc8 TS |
343 | { |
344 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c3f34952 | 345 | gfc_symbol *sym, *dt_sym = NULL; |
294fbfc8 TS |
346 | gfc_expr *expr; |
347 | match m; | |
36d3fb4c | 348 | locus old_loc; |
294fbfc8 TS |
349 | |
350 | m = gfc_match_literal_constant (&expr, 1); | |
351 | if (m == MATCH_YES) | |
352 | { | |
353 | *result = expr; | |
354 | return MATCH_YES; | |
355 | } | |
356 | ||
357 | if (m == MATCH_ERROR) | |
358 | return MATCH_ERROR; | |
359 | ||
360 | m = gfc_match_null (result); | |
361 | if (m != MATCH_NO) | |
362 | return m; | |
363 | ||
36d3fb4c PT |
364 | old_loc = gfc_current_locus; |
365 | ||
366 | /* Should this be a structure component, try to match it | |
367 | before matching a name. */ | |
368 | m = gfc_match_rvalue (result); | |
369 | if (m == MATCH_ERROR) | |
370 | return m; | |
371 | ||
372 | if (m == MATCH_YES && (*result)->expr_type == EXPR_STRUCTURE) | |
373 | { | |
524af0d6 | 374 | if (!gfc_simplify_expr (*result, 0)) |
36d3fb4c PT |
375 | m = MATCH_ERROR; |
376 | return m; | |
377 | } | |
46f4f794 TB |
378 | else if (m == MATCH_YES) |
379 | gfc_free_expr (*result); | |
36d3fb4c PT |
380 | |
381 | gfc_current_locus = old_loc; | |
382 | ||
294fbfc8 TS |
383 | m = gfc_match_name (name); |
384 | if (m != MATCH_YES) | |
385 | return m; | |
386 | ||
387 | if (gfc_find_symbol (name, NULL, 1, &sym)) | |
388 | return MATCH_ERROR; | |
389 | ||
c3f34952 TB |
390 | if (sym && sym->attr.generic) |
391 | dt_sym = gfc_find_dt_in_generic (sym); | |
392 | ||
294fbfc8 | 393 | if (sym == NULL |
c3f34952 TB |
394 | || (sym->attr.flavor != FL_PARAMETER |
395 | && (!dt_sym || dt_sym->attr.flavor != FL_DERIVED))) | |
294fbfc8 | 396 | { |
c4100eae | 397 | gfc_error ("Symbol %qs must be a PARAMETER in DATA statement at %C", |
294fbfc8 TS |
398 | name); |
399 | return MATCH_ERROR; | |
400 | } | |
c3f34952 TB |
401 | else if (dt_sym && dt_sym->attr.flavor == FL_DERIVED) |
402 | return gfc_match_structure_constructor (dt_sym, result); | |
294fbfc8 | 403 | |
d46e0870 JD |
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 | { | |
524af0d6 | 415 | if (!gfc_simplify_expr (*result, 0)) |
d46e0870 JD |
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 | ||
294fbfc8 TS |
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 | |
636dff67 | 437 | top_val_list (gfc_data *data) |
294fbfc8 | 438 | { |
7b901ac4 | 439 | gfc_data_value *new_val, *tail; |
294fbfc8 | 440 | gfc_expr *expr; |
294fbfc8 TS |
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 | ||
7b901ac4 KG |
453 | new_val = gfc_get_data_value (); |
454 | mpz_init (new_val->repeat); | |
294fbfc8 TS |
455 | |
456 | if (tail == NULL) | |
7b901ac4 | 457 | data->value = new_val; |
294fbfc8 | 458 | else |
7b901ac4 | 459 | tail->next = new_val; |
294fbfc8 | 460 | |
7b901ac4 | 461 | tail = new_val; |
294fbfc8 TS |
462 | |
463 | if (expr->ts.type != BT_INTEGER || gfc_match_char ('*') != MATCH_YES) | |
464 | { | |
465 | tail->expr = expr; | |
f2112868 | 466 | mpz_set_ui (tail->repeat, 1); |
294fbfc8 TS |
467 | } |
468 | else | |
469 | { | |
46f4f794 | 470 | mpz_set (tail->repeat, expr->value.integer); |
294fbfc8 | 471 | gfc_free_expr (expr); |
294fbfc8 TS |
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); | |
a9f6f1f2 | 490 | gfc_free_data_all (gfc_current_ns); |
294fbfc8 TS |
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; | |
ed0e3607 | 502 | gfc_symbol *sym; |
294fbfc8 TS |
503 | gfc_data *newdata; |
504 | ||
505 | /* Set up data structure to hold initializers. */ | |
506 | gfc_find_sym_tree (name, NULL, 0, &st); | |
ed0e3607 AL |
507 | sym = st->n.sym; |
508 | ||
294fbfc8 TS |
509 | newdata = gfc_get_data (); |
510 | newdata->var = gfc_get_data_variable (); | |
511 | newdata->var->expr = gfc_get_variable_expr (st); | |
8c5c0b80 | 512 | newdata->where = gfc_current_locus; |
294fbfc8 | 513 | |
66e4ab31 | 514 | /* Match initial value list. This also eats the terminal '/'. */ |
294fbfc8 TS |
515 | m = top_val_list (newdata); |
516 | if (m != MATCH_YES) | |
517 | { | |
cede9502 | 518 | free (newdata); |
294fbfc8 TS |
519 | return m; |
520 | } | |
521 | ||
522 | if (gfc_pure (NULL)) | |
523 | { | |
524 | gfc_error ("Initialization at %C is not allowed in a PURE procedure"); | |
cede9502 | 525 | free (newdata); |
294fbfc8 TS |
526 | return MATCH_ERROR; |
527 | } | |
ccd7751b | 528 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
f1f39033 | 529 | |
ed0e3607 | 530 | /* Mark the variable as having appeared in a data statement. */ |
524af0d6 | 531 | if (!gfc_add_data (&sym->attr, sym->name, &sym->declared_at)) |
ed0e3607 | 532 | { |
cede9502 | 533 | free (newdata); |
ed0e3607 AL |
534 | return MATCH_ERROR; |
535 | } | |
536 | ||
294fbfc8 TS |
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 | ||
636dff67 | 544 | |
294fbfc8 | 545 | /* Match the stuff following a DATA statement. If ERROR_FLAG is set, |
13795658 | 546 | we are matching a DATA statement and are therefore issuing an error |
d51347f9 | 547 | if we encounter something unexpected, if not, we're trying to match |
69de3b83 | 548 | an old-style initialization expression of the form INTEGER I /2/. */ |
294fbfc8 TS |
549 | |
550 | match | |
551 | gfc_match_data (void) | |
552 | { | |
7b901ac4 | 553 | gfc_data *new_data; |
294fbfc8 TS |
554 | match m; |
555 | ||
ca39e6f2 | 556 | set_in_match_data (true); |
2220652d | 557 | |
294fbfc8 TS |
558 | for (;;) |
559 | { | |
7b901ac4 KG |
560 | new_data = gfc_get_data (); |
561 | new_data->where = gfc_current_locus; | |
294fbfc8 | 562 | |
7b901ac4 | 563 | m = top_var_list (new_data); |
294fbfc8 TS |
564 | if (m != MATCH_YES) |
565 | goto cleanup; | |
566 | ||
7b901ac4 | 567 | m = top_val_list (new_data); |
294fbfc8 TS |
568 | if (m != MATCH_YES) |
569 | goto cleanup; | |
570 | ||
7b901ac4 KG |
571 | new_data->next = gfc_current_ns->data; |
572 | gfc_current_ns->data = new_data; | |
294fbfc8 TS |
573 | |
574 | if (gfc_match_eos () == MATCH_YES) | |
575 | break; | |
576 | ||
577 | gfc_match_char (','); /* Optional comma */ | |
578 | } | |
579 | ||
ca39e6f2 | 580 | set_in_match_data (false); |
2220652d | 581 | |
294fbfc8 TS |
582 | if (gfc_pure (NULL)) |
583 | { | |
584 | gfc_error ("DATA statement at %C is not allowed in a PURE procedure"); | |
585 | return MATCH_ERROR; | |
586 | } | |
ccd7751b | 587 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
f1f39033 | 588 | |
294fbfc8 TS |
589 | return MATCH_YES; |
590 | ||
591 | cleanup: | |
ca39e6f2 | 592 | set_in_match_data (false); |
7b901ac4 | 593 | gfc_free_data (new_data); |
294fbfc8 TS |
594 | return MATCH_ERROR; |
595 | } | |
596 | ||
597 | ||
598 | /************************ Declaration statements *********************/ | |
599 | ||
d3a9eea2 | 600 | |
eea58adb | 601 | /* Auxiliary function to merge DIMENSION and CODIMENSION array specs. */ |
d3a9eea2 | 602 | |
524af0d6 | 603 | static bool |
d3a9eea2 TB |
604 | merge_array_spec (gfc_array_spec *from, gfc_array_spec *to, bool copy) |
605 | { | |
606 | int i; | |
607 | ||
63fbf586 TB |
608 | if ((from->type == AS_ASSUMED_RANK && to->corank) |
609 | || (to->type == AS_ASSUMED_RANK && from->corank)) | |
610 | { | |
611 | gfc_error ("The assumed-rank array at %C shall not have a codimension"); | |
524af0d6 | 612 | return false; |
63fbf586 | 613 | } |
c62c6622 | 614 | |
d3a9eea2 TB |
615 | if (to->rank == 0 && from->rank > 0) |
616 | { | |
617 | to->rank = from->rank; | |
618 | to->type = from->type; | |
619 | to->cray_pointee = from->cray_pointee; | |
620 | to->cp_was_assumed = from->cp_was_assumed; | |
621 | ||
622 | for (i = 0; i < to->corank; i++) | |
623 | { | |
624 | to->lower[from->rank + i] = to->lower[i]; | |
625 | to->upper[from->rank + i] = to->upper[i]; | |
626 | } | |
627 | for (i = 0; i < from->rank; i++) | |
628 | { | |
629 | if (copy) | |
630 | { | |
631 | to->lower[i] = gfc_copy_expr (from->lower[i]); | |
632 | to->upper[i] = gfc_copy_expr (from->upper[i]); | |
633 | } | |
634 | else | |
635 | { | |
636 | to->lower[i] = from->lower[i]; | |
637 | to->upper[i] = from->upper[i]; | |
638 | } | |
639 | } | |
640 | } | |
641 | else if (to->corank == 0 && from->corank > 0) | |
642 | { | |
643 | to->corank = from->corank; | |
644 | to->cotype = from->cotype; | |
645 | ||
646 | for (i = 0; i < from->corank; i++) | |
647 | { | |
648 | if (copy) | |
649 | { | |
650 | to->lower[to->rank + i] = gfc_copy_expr (from->lower[i]); | |
651 | to->upper[to->rank + i] = gfc_copy_expr (from->upper[i]); | |
652 | } | |
653 | else | |
654 | { | |
655 | to->lower[to->rank + i] = from->lower[i]; | |
656 | to->upper[to->rank + i] = from->upper[i]; | |
657 | } | |
658 | } | |
659 | } | |
63fbf586 | 660 | |
524af0d6 | 661 | return true; |
d3a9eea2 TB |
662 | } |
663 | ||
664 | ||
6de9cd9a DN |
665 | /* Match an intent specification. Since this can only happen after an |
666 | INTENT word, a legal intent-spec must follow. */ | |
667 | ||
668 | static sym_intent | |
669 | match_intent_spec (void) | |
670 | { | |
671 | ||
672 | if (gfc_match (" ( in out )") == MATCH_YES) | |
673 | return INTENT_INOUT; | |
674 | if (gfc_match (" ( in )") == MATCH_YES) | |
675 | return INTENT_IN; | |
676 | if (gfc_match (" ( out )") == MATCH_YES) | |
677 | return INTENT_OUT; | |
678 | ||
679 | gfc_error ("Bad INTENT specification at %C"); | |
680 | return INTENT_UNKNOWN; | |
681 | } | |
682 | ||
683 | ||
684 | /* Matches a character length specification, which is either a | |
e69afb29 | 685 | specification expression, '*', or ':'. */ |
6de9cd9a DN |
686 | |
687 | static match | |
e69afb29 | 688 | char_len_param_value (gfc_expr **expr, bool *deferred) |
6de9cd9a | 689 | { |
cba28dad JD |
690 | match m; |
691 | ||
e69afb29 SK |
692 | *expr = NULL; |
693 | *deferred = false; | |
694 | ||
6de9cd9a | 695 | if (gfc_match_char ('*') == MATCH_YES) |
e69afb29 SK |
696 | return MATCH_YES; |
697 | ||
698 | if (gfc_match_char (':') == MATCH_YES) | |
6de9cd9a | 699 | { |
98a819ea | 700 | if (!gfc_notify_std (GFC_STD_F2003, "deferred type parameter at %C")) |
e69afb29 SK |
701 | return MATCH_ERROR; |
702 | ||
703 | *deferred = true; | |
704 | ||
6de9cd9a DN |
705 | return MATCH_YES; |
706 | } | |
707 | ||
cba28dad | 708 | m = gfc_match_expr (expr); |
f37e928c | 709 | |
98a819ea SK |
710 | if (m == MATCH_NO || m == MATCH_ERROR) |
711 | return m; | |
712 | ||
713 | if (!gfc_expr_check_typed (*expr, gfc_current_ns, false)) | |
f37e928c DK |
714 | return MATCH_ERROR; |
715 | ||
98a819ea | 716 | if ((*expr)->expr_type == EXPR_FUNCTION) |
cba28dad | 717 | { |
8d48826b SK |
718 | if ((*expr)->ts.type == BT_INTEGER |
719 | || ((*expr)->ts.type == BT_UNKNOWN | |
720 | && strcmp((*expr)->symtree->name, "null") != 0)) | |
721 | return MATCH_YES; | |
722 | ||
723 | goto syntax; | |
724 | } | |
725 | else if ((*expr)->expr_type == EXPR_CONSTANT) | |
726 | { | |
727 | /* F2008, 4.4.3.1: The length is a type parameter; its kind is | |
728 | processor dependent and its value is greater than or equal to zero. | |
729 | F2008, 4.4.3.2: If the character length parameter value evaluates | |
730 | to a negative value, the length of character entities declared | |
731 | is zero. */ | |
732 | ||
733 | if ((*expr)->ts.type == BT_INTEGER) | |
cba28dad | 734 | { |
8d48826b SK |
735 | if (mpz_cmp_si ((*expr)->value.integer, 0) < 0) |
736 | mpz_set_si ((*expr)->value.integer, 0); | |
cba28dad | 737 | } |
8d48826b SK |
738 | else |
739 | goto syntax; | |
cba28dad | 740 | } |
8d48826b SK |
741 | else if ((*expr)->expr_type == EXPR_ARRAY) |
742 | goto syntax; | |
743 | else if ((*expr)->expr_type == EXPR_VARIABLE) | |
744 | { | |
745 | gfc_expr *e; | |
746 | ||
747 | e = gfc_copy_expr (*expr); | |
748 | ||
749 | /* This catches the invalid code "[character(m(2:3)) :: 'x', 'y']", | |
750 | which causes an ICE if gfc_reduce_init_expr() is called. */ | |
54b96a2d SK |
751 | if (e->ref && e->ref->type == REF_ARRAY |
752 | && e->ref->u.ar.type == AR_UNKNOWN | |
8d48826b SK |
753 | && e->ref->u.ar.dimen_type[0] == DIMEN_RANGE) |
754 | goto syntax; | |
755 | ||
756 | gfc_reduce_init_expr (e); | |
98a819ea | 757 | |
54b96a2d SK |
758 | if ((e->ref && e->ref->type == REF_ARRAY |
759 | && e->ref->u.ar.type != AR_ELEMENT) | |
8d48826b SK |
760 | || (!e->ref && e->expr_type == EXPR_ARRAY)) |
761 | { | |
762 | gfc_free_expr (e); | |
763 | goto syntax; | |
764 | } | |
765 | ||
766 | gfc_free_expr (e); | |
767 | } | |
98a819ea | 768 | |
cba28dad JD |
769 | return m; |
770 | ||
771 | syntax: | |
8d48826b | 772 | gfc_error ("Scalar INTEGER expression expected at %L", &(*expr)->where); |
cba28dad | 773 | return MATCH_ERROR; |
6de9cd9a DN |
774 | } |
775 | ||
776 | ||
777 | /* A character length is a '*' followed by a literal integer or a | |
778 | char_len_param_value in parenthesis. */ | |
779 | ||
780 | static match | |
62732c30 | 781 | match_char_length (gfc_expr **expr, bool *deferred, bool obsolescent_check) |
6de9cd9a | 782 | { |
5cf54585 | 783 | int length; |
6de9cd9a DN |
784 | match m; |
785 | ||
f5acf0f2 | 786 | *deferred = false; |
6de9cd9a DN |
787 | m = gfc_match_char ('*'); |
788 | if (m != MATCH_YES) | |
789 | return m; | |
790 | ||
5cf54585 | 791 | m = gfc_match_small_literal_int (&length, NULL); |
6de9cd9a DN |
792 | if (m == MATCH_ERROR) |
793 | return m; | |
794 | ||
795 | if (m == MATCH_YES) | |
796 | { | |
62732c30 | 797 | if (obsolescent_check |
524af0d6 | 798 | && !gfc_notify_std (GFC_STD_F95_OBS, "Old-style character length at %C")) |
e2ab8b09 | 799 | return MATCH_ERROR; |
b7e75771 | 800 | *expr = gfc_get_int_expr (gfc_default_integer_kind, NULL, length); |
6de9cd9a DN |
801 | return m; |
802 | } | |
803 | ||
804 | if (gfc_match_char ('(') == MATCH_NO) | |
805 | goto syntax; | |
806 | ||
e69afb29 | 807 | m = char_len_param_value (expr, deferred); |
1c8bcdf7 PT |
808 | if (m != MATCH_YES && gfc_matching_function) |
809 | { | |
810 | gfc_undo_symbols (); | |
811 | m = MATCH_YES; | |
812 | } | |
813 | ||
6de9cd9a DN |
814 | if (m == MATCH_ERROR) |
815 | return m; | |
816 | if (m == MATCH_NO) | |
817 | goto syntax; | |
818 | ||
819 | if (gfc_match_char (')') == MATCH_NO) | |
820 | { | |
821 | gfc_free_expr (*expr); | |
822 | *expr = NULL; | |
823 | goto syntax; | |
824 | } | |
825 | ||
826 | return MATCH_YES; | |
827 | ||
828 | syntax: | |
829 | gfc_error ("Syntax error in character length specification at %C"); | |
830 | return MATCH_ERROR; | |
831 | } | |
832 | ||
833 | ||
9e35b386 EE |
834 | /* Special subroutine for finding a symbol. Check if the name is found |
835 | in the current name space. If not, and we're compiling a function or | |
836 | subroutine and the parent compilation unit is an interface, then check | |
837 | to see if the name we've been given is the name of the interface | |
838 | (located in another namespace). */ | |
6de9cd9a DN |
839 | |
840 | static int | |
08a6b8e0 | 841 | find_special (const char *name, gfc_symbol **result, bool allow_subroutine) |
6de9cd9a DN |
842 | { |
843 | gfc_state_data *s; | |
08a6b8e0 | 844 | gfc_symtree *st; |
9e35b386 | 845 | int i; |
6de9cd9a | 846 | |
08a6b8e0 | 847 | i = gfc_get_sym_tree (name, NULL, &st, allow_subroutine); |
d51347f9 | 848 | if (i == 0) |
08a6b8e0 TB |
849 | { |
850 | *result = st ? st->n.sym : NULL; | |
851 | goto end; | |
852 | } | |
d51347f9 | 853 | |
6de9cd9a DN |
854 | if (gfc_current_state () != COMP_SUBROUTINE |
855 | && gfc_current_state () != COMP_FUNCTION) | |
9e35b386 | 856 | goto end; |
6de9cd9a DN |
857 | |
858 | s = gfc_state_stack->previous; | |
859 | if (s == NULL) | |
9e35b386 | 860 | goto end; |
6de9cd9a DN |
861 | |
862 | if (s->state != COMP_INTERFACE) | |
9e35b386 | 863 | goto end; |
6de9cd9a | 864 | if (s->sym == NULL) |
66e4ab31 | 865 | goto end; /* Nameless interface. */ |
6de9cd9a DN |
866 | |
867 | if (strcmp (name, s->sym->name) == 0) | |
868 | { | |
869 | *result = s->sym; | |
870 | return 0; | |
871 | } | |
872 | ||
9e35b386 EE |
873 | end: |
874 | return i; | |
6de9cd9a DN |
875 | } |
876 | ||
877 | ||
878 | /* Special subroutine for getting a symbol node associated with a | |
879 | procedure name, used in SUBROUTINE and FUNCTION statements. The | |
880 | symbol is created in the parent using with symtree node in the | |
881 | child unit pointing to the symbol. If the current namespace has no | |
882 | parent, then the symbol is just created in the current unit. */ | |
883 | ||
884 | static int | |
636dff67 | 885 | get_proc_name (const char *name, gfc_symbol **result, bool module_fcn_entry) |
6de9cd9a DN |
886 | { |
887 | gfc_symtree *st; | |
888 | gfc_symbol *sym; | |
a7ca4d8d | 889 | int rc = 0; |
6de9cd9a | 890 | |
1a492601 PT |
891 | /* Module functions have to be left in their own namespace because |
892 | they have potentially (almost certainly!) already been referenced. | |
893 | In this sense, they are rather like external functions. This is | |
894 | fixed up in resolve.c(resolve_entries), where the symbol name- | |
895 | space is set to point to the master function, so that the fake | |
896 | result mechanism can work. */ | |
897 | if (module_fcn_entry) | |
6c12686b PT |
898 | { |
899 | /* Present if entry is declared to be a module procedure. */ | |
900 | rc = gfc_find_symbol (name, gfc_current_ns->parent, 0, result); | |
aa84a9a5 | 901 | |
6c12686b PT |
902 | if (*result == NULL) |
903 | rc = gfc_get_symbol (name, NULL, result); | |
2e32a71e | 904 | else if (!gfc_get_symbol (name, NULL, &sym) && sym |
aa84a9a5 PT |
905 | && (*result)->ts.type == BT_UNKNOWN |
906 | && sym->attr.flavor == FL_UNKNOWN) | |
907 | /* Pick up the typespec for the entry, if declared in the function | |
908 | body. Note that this symbol is FL_UNKNOWN because it will | |
909 | only have appeared in a type declaration. The local symtree | |
910 | is set to point to the module symbol and a unique symtree | |
911 | to the local version. This latter ensures a correct clearing | |
912 | of the symbols. */ | |
2e32a71e PT |
913 | { |
914 | /* If the ENTRY proceeds its specification, we need to ensure | |
915 | that this does not raise a "has no IMPLICIT type" error. */ | |
916 | if (sym->ts.type == BT_UNKNOWN) | |
0e5a218b | 917 | sym->attr.untyped = 1; |
2e32a71e | 918 | |
0e5a218b | 919 | (*result)->ts = sym->ts; |
2e32a71e PT |
920 | |
921 | /* Put the symbol in the procedure namespace so that, should | |
df2fba9e | 922 | the ENTRY precede its specification, the specification |
2e32a71e PT |
923 | can be applied. */ |
924 | (*result)->ns = gfc_current_ns; | |
925 | ||
926 | gfc_find_sym_tree (name, gfc_current_ns, 0, &st); | |
927 | st->n.sym = *result; | |
928 | st = gfc_get_unique_symtree (gfc_current_ns); | |
929 | st->n.sym = sym; | |
930 | } | |
6c12686b | 931 | } |
68ea355b PT |
932 | else |
933 | rc = gfc_get_symbol (name, gfc_current_ns->parent, result); | |
6de9cd9a | 934 | |
a7ca4d8d PT |
935 | if (rc) |
936 | return rc; | |
937 | ||
68ea355b | 938 | sym = *result; |
79124116 PT |
939 | if (sym->attr.proc == PROC_ST_FUNCTION) |
940 | return rc; | |
6de9cd9a | 941 | |
4668d6f9 PT |
942 | if (sym->attr.module_procedure |
943 | && sym->attr.if_source == IFSRC_IFBODY) | |
944 | { | |
945 | /* Create a partially populated interface symbol to carry the | |
946 | characteristics of the procedure and the result. */ | |
947 | sym->ts.interface = gfc_new_symbol (name, sym->ns); | |
948 | gfc_add_type (sym->ts.interface, &(sym->ts), | |
949 | &gfc_current_locus); | |
950 | gfc_copy_attr (&sym->ts.interface->attr, &sym->attr, NULL); | |
951 | if (sym->attr.dimension) | |
952 | sym->ts.interface->as = gfc_copy_array_spec (sym->as); | |
953 | ||
954 | /* Ideally, at this point, a copy would be made of the formal | |
955 | arguments and their namespace. However, this does not appear | |
956 | to be necessary, albeit at the expense of not being able to | |
957 | use gfc_compare_interfaces directly. */ | |
958 | ||
959 | if (sym->result && sym->result != sym) | |
960 | { | |
961 | sym->ts.interface->result = sym->result; | |
962 | sym->result = NULL; | |
963 | } | |
964 | else if (sym->result) | |
965 | { | |
966 | sym->ts.interface->result = sym->ts.interface; | |
967 | } | |
968 | } | |
969 | else if (sym && !sym->gfc_new | |
970 | && gfc_current_state () != COMP_INTERFACE) | |
68ea355b | 971 | { |
cda7004b PT |
972 | /* Trap another encompassed procedure with the same name. All |
973 | these conditions are necessary to avoid picking up an entry | |
974 | whose name clashes with that of the encompassing procedure; | |
975 | this is handled using gsymbols to register unique,globally | |
976 | accessible names. */ | |
68ea355b | 977 | if (sym->attr.flavor != 0 |
636dff67 SK |
978 | && sym->attr.proc != 0 |
979 | && (sym->attr.subroutine || sym->attr.function) | |
980 | && sym->attr.if_source != IFSRC_UNKNOWN) | |
fea70c99 MLI |
981 | gfc_error_now ("Procedure %qs at %C is already defined at %L", |
982 | name, &sym->declared_at); | |
68ea355b | 983 | |
fd3e70af JD |
984 | /* Trap a procedure with a name the same as interface in the |
985 | encompassing scope. */ | |
986 | if (sym->attr.generic != 0 | |
2305fa31 JD |
987 | && (sym->attr.subroutine || sym->attr.function) |
988 | && !sym->attr.mod_proc) | |
fea70c99 MLI |
989 | gfc_error_now ("Name %qs at %C is already defined" |
990 | " as a generic interface at %L", | |
991 | name, &sym->declared_at); | |
fd3e70af | 992 | |
68ea355b PT |
993 | /* Trap declarations of attributes in encompassing scope. The |
994 | signature for this is that ts.kind is set. Legitimate | |
995 | references only set ts.type. */ | |
996 | if (sym->ts.kind != 0 | |
636dff67 SK |
997 | && !sym->attr.implicit_type |
998 | && sym->attr.proc == 0 | |
999 | && gfc_current_ns->parent != NULL | |
1000 | && sym->attr.access == 0 | |
1001 | && !module_fcn_entry) | |
fea70c99 MLI |
1002 | gfc_error_now ("Procedure %qs at %C has an explicit interface " |
1003 | "and must not have attributes declared at %L", | |
1004 | name, &sym->declared_at); | |
68ea355b PT |
1005 | } |
1006 | ||
1007 | if (gfc_current_ns->parent == NULL || *result == NULL) | |
1008 | return rc; | |
6de9cd9a | 1009 | |
1a492601 PT |
1010 | /* Module function entries will already have a symtree in |
1011 | the current namespace but will need one at module level. */ | |
1012 | if (module_fcn_entry) | |
6c12686b PT |
1013 | { |
1014 | /* Present if entry is declared to be a module procedure. */ | |
1015 | rc = gfc_find_sym_tree (name, gfc_current_ns->parent, 0, &st); | |
1016 | if (st == NULL) | |
1017 | st = gfc_new_symtree (&gfc_current_ns->parent->sym_root, name); | |
1018 | } | |
1a492601 PT |
1019 | else |
1020 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); | |
6de9cd9a | 1021 | |
6de9cd9a DN |
1022 | st->n.sym = sym; |
1023 | sym->refs++; | |
1024 | ||
66e4ab31 | 1025 | /* See if the procedure should be a module procedure. */ |
6de9cd9a | 1026 | |
1a492601 | 1027 | if (((sym->ns->proc_name != NULL |
6c12686b PT |
1028 | && sym->ns->proc_name->attr.flavor == FL_MODULE |
1029 | && sym->attr.proc != PROC_MODULE) | |
1030 | || (module_fcn_entry && sym->attr.proc != PROC_MODULE)) | |
524af0d6 | 1031 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
6de9cd9a DN |
1032 | rc = 2; |
1033 | ||
1034 | return rc; | |
1035 | } | |
1036 | ||
1037 | ||
a8b3b0b6 CR |
1038 | /* Verify that the given symbol representing a parameter is C |
1039 | interoperable, by checking to see if it was marked as such after | |
1040 | its declaration. If the given symbol is not interoperable, a | |
1041 | warning is reported, thus removing the need to return the status to | |
1042 | the calling function. The standard does not require the user use | |
1043 | one of the iso_c_binding named constants to declare an | |
1044 | interoperable parameter, but we can't be sure if the param is C | |
1045 | interop or not if the user doesn't. For example, integer(4) may be | |
1046 | legal Fortran, but doesn't have meaning in C. It may interop with | |
1047 | a number of the C types, which causes a problem because the | |
1048 | compiler can't know which one. This code is almost certainly not | |
1049 | portable, and the user will get what they deserve if the C type | |
1050 | across platforms isn't always interoperable with integer(4). If | |
1051 | the user had used something like integer(c_int) or integer(c_long), | |
1052 | the compiler could have automatically handled the varying sizes | |
1053 | across platforms. */ | |
1054 | ||
524af0d6 | 1055 | bool |
00820a2a | 1056 | gfc_verify_c_interop_param (gfc_symbol *sym) |
a8b3b0b6 CR |
1057 | { |
1058 | int is_c_interop = 0; | |
524af0d6 | 1059 | bool retval = true; |
a8b3b0b6 CR |
1060 | |
1061 | /* We check implicitly typed variables in symbol.c:gfc_set_default_type(). | |
1062 | Don't repeat the checks here. */ | |
1063 | if (sym->attr.implicit_type) | |
524af0d6 | 1064 | return true; |
f5acf0f2 | 1065 | |
a8b3b0b6 CR |
1066 | /* For subroutines or functions that are passed to a BIND(C) procedure, |
1067 | they're interoperable if they're BIND(C) and their params are all | |
1068 | interoperable. */ | |
1069 | if (sym->attr.flavor == FL_PROCEDURE) | |
1070 | { | |
1071 | if (sym->attr.is_bind_c == 0) | |
1072 | { | |
4daa149b TB |
1073 | gfc_error_now ("Procedure %qs at %L must have the BIND(C) " |
1074 | "attribute to be C interoperable", sym->name, | |
1075 | &(sym->declared_at)); | |
524af0d6 | 1076 | return false; |
a8b3b0b6 CR |
1077 | } |
1078 | else | |
1079 | { | |
1080 | if (sym->attr.is_c_interop == 1) | |
1081 | /* We've already checked this procedure; don't check it again. */ | |
524af0d6 | 1082 | return true; |
a8b3b0b6 CR |
1083 | else |
1084 | return verify_bind_c_sym (sym, &(sym->ts), sym->attr.in_common, | |
1085 | sym->common_block); | |
1086 | } | |
1087 | } | |
f5acf0f2 | 1088 | |
a8b3b0b6 CR |
1089 | /* See if we've stored a reference to a procedure that owns sym. */ |
1090 | if (sym->ns != NULL && sym->ns->proc_name != NULL) | |
1091 | { | |
1092 | if (sym->ns->proc_name->attr.is_bind_c == 1) | |
1093 | { | |
524af0d6 | 1094 | is_c_interop = (gfc_verify_c_interop(&(sym->ts)) ? 1 : 0); |
a8b3b0b6 CR |
1095 | |
1096 | if (is_c_interop != 1) | |
1097 | { | |
1098 | /* Make personalized messages to give better feedback. */ | |
1099 | if (sym->ts.type == BT_DERIVED) | |
c4100eae MLI |
1100 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1101 | "BIND(C) procedure %qs but is not C interoperable " | |
1102 | "because derived type %qs is not C interoperable", | |
a8b3b0b6 | 1103 | sym->name, &(sym->declared_at), |
f5acf0f2 | 1104 | sym->ns->proc_name->name, |
bc21d315 | 1105 | sym->ts.u.derived->name); |
00820a2a | 1106 | else if (sym->ts.type == BT_CLASS) |
c4100eae MLI |
1107 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1108 | "BIND(C) procedure %qs but is not C interoperable " | |
00820a2a JW |
1109 | "because it is polymorphic", |
1110 | sym->name, &(sym->declared_at), | |
1111 | sym->ns->proc_name->name); | |
4daa149b | 1112 | else if (warn_c_binding_type) |
48749dbc MLI |
1113 | gfc_warning (OPT_Wc_binding_type, |
1114 | "Variable %qs at %L is a dummy argument of the " | |
1115 | "BIND(C) procedure %qs but may not be C " | |
a8b3b0b6 CR |
1116 | "interoperable", |
1117 | sym->name, &(sym->declared_at), | |
1118 | sym->ns->proc_name->name); | |
1119 | } | |
aa5e22f0 CR |
1120 | |
1121 | /* Character strings are only C interoperable if they have a | |
1122 | length of 1. */ | |
1123 | if (sym->ts.type == BT_CHARACTER) | |
1124 | { | |
bc21d315 | 1125 | gfc_charlen *cl = sym->ts.u.cl; |
aa5e22f0 CR |
1126 | if (!cl || !cl->length || cl->length->expr_type != EXPR_CONSTANT |
1127 | || mpz_cmp_si (cl->length->value.integer, 1) != 0) | |
1128 | { | |
c4100eae | 1129 | gfc_error ("Character argument %qs at %L " |
aa5e22f0 | 1130 | "must be length 1 because " |
c4100eae | 1131 | "procedure %qs is BIND(C)", |
aa5e22f0 CR |
1132 | sym->name, &sym->declared_at, |
1133 | sym->ns->proc_name->name); | |
524af0d6 | 1134 | retval = false; |
aa5e22f0 CR |
1135 | } |
1136 | } | |
1137 | ||
a8b3b0b6 CR |
1138 | /* We have to make sure that any param to a bind(c) routine does |
1139 | not have the allocatable, pointer, or optional attributes, | |
1140 | according to J3/04-007, section 5.1. */ | |
60f6ca95 | 1141 | if (sym->attr.allocatable == 1 |
a4d9b221 TB |
1142 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable %qs at %L with " |
1143 | "ALLOCATABLE attribute in procedure %qs " | |
60f6ca95 TB |
1144 | "with BIND(C)", sym->name, |
1145 | &(sym->declared_at), | |
1146 | sym->ns->proc_name->name)) | |
1147 | retval = false; | |
1148 | ||
1149 | if (sym->attr.pointer == 1 | |
a4d9b221 TB |
1150 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable %qs at %L with " |
1151 | "POINTER attribute in procedure %qs " | |
60f6ca95 TB |
1152 | "with BIND(C)", sym->name, |
1153 | &(sym->declared_at), | |
1154 | sym->ns->proc_name->name)) | |
1155 | retval = false; | |
1156 | ||
1157 | if ((sym->attr.allocatable || sym->attr.pointer) && !sym->as) | |
a8b3b0b6 | 1158 | { |
c4100eae MLI |
1159 | gfc_error ("Scalar variable %qs at %L with POINTER or " |
1160 | "ALLOCATABLE in procedure %qs with BIND(C) is not yet" | |
60f6ca95 | 1161 | " supported", sym->name, &(sym->declared_at), |
a8b3b0b6 | 1162 | sym->ns->proc_name->name); |
524af0d6 | 1163 | retval = false; |
a8b3b0b6 CR |
1164 | } |
1165 | ||
2e8d9212 | 1166 | if (sym->attr.optional == 1 && sym->attr.value) |
a8b3b0b6 | 1167 | { |
c4100eae MLI |
1168 | gfc_error ("Variable %qs at %L cannot have both the OPTIONAL " |
1169 | "and the VALUE attribute because procedure %qs " | |
2e8d9212 | 1170 | "is BIND(C)", sym->name, &(sym->declared_at), |
a8b3b0b6 | 1171 | sym->ns->proc_name->name); |
524af0d6 | 1172 | retval = false; |
a8b3b0b6 | 1173 | } |
2e8d9212 | 1174 | else if (sym->attr.optional == 1 |
a4d9b221 | 1175 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable %qs " |
524af0d6 | 1176 | "at %L with OPTIONAL attribute in " |
a4d9b221 | 1177 | "procedure %qs which is BIND(C)", |
524af0d6 JB |
1178 | sym->name, &(sym->declared_at), |
1179 | sym->ns->proc_name->name)) | |
1180 | retval = false; | |
a8b3b0b6 CR |
1181 | |
1182 | /* Make sure that if it has the dimension attribute, that it is | |
95d47b8d TB |
1183 | either assumed size or explicit shape. Deferred shape is already |
1184 | covered by the pointer/allocatable attribute. */ | |
1185 | if (sym->as != NULL && sym->as->type == AS_ASSUMED_SHAPE | |
2a2703a2 | 1186 | && !gfc_notify_std (GFC_STD_F2008_TS, "Assumed-shape array %qs " |
524af0d6 JB |
1187 | "at %L as dummy argument to the BIND(C) " |
1188 | "procedure '%s' at %L", sym->name, | |
1189 | &(sym->declared_at), | |
1190 | sym->ns->proc_name->name, | |
1191 | &(sym->ns->proc_name->declared_at))) | |
1192 | retval = false; | |
a8b3b0b6 CR |
1193 | } |
1194 | } | |
1195 | ||
1196 | return retval; | |
1197 | } | |
1198 | ||
1199 | ||
cf2b3c22 | 1200 | |
a8b3b0b6 | 1201 | /* Function called by variable_decl() that adds a name to the symbol table. */ |
6de9cd9a | 1202 | |
524af0d6 | 1203 | static bool |
e69afb29 | 1204 | build_sym (const char *name, gfc_charlen *cl, bool cl_deferred, |
636dff67 | 1205 | gfc_array_spec **as, locus *var_locus) |
6de9cd9a DN |
1206 | { |
1207 | symbol_attribute attr; | |
1208 | gfc_symbol *sym; | |
1209 | ||
9e35b386 | 1210 | if (gfc_get_symbol (name, NULL, &sym)) |
524af0d6 | 1211 | return false; |
6de9cd9a | 1212 | |
66e4ab31 | 1213 | /* Start updating the symbol table. Add basic type attribute if present. */ |
6de9cd9a | 1214 | if (current_ts.type != BT_UNKNOWN |
636dff67 SK |
1215 | && (sym->attr.implicit_type == 0 |
1216 | || !gfc_compare_types (&sym->ts, ¤t_ts)) | |
524af0d6 JB |
1217 | && !gfc_add_type (sym, ¤t_ts, var_locus)) |
1218 | return false; | |
6de9cd9a DN |
1219 | |
1220 | if (sym->ts.type == BT_CHARACTER) | |
e69afb29 SK |
1221 | { |
1222 | sym->ts.u.cl = cl; | |
1223 | sym->ts.deferred = cl_deferred; | |
1224 | } | |
6de9cd9a DN |
1225 | |
1226 | /* Add dimension attribute if present. */ | |
524af0d6 JB |
1227 | if (!gfc_set_array_spec (sym, *as, var_locus)) |
1228 | return false; | |
6de9cd9a DN |
1229 | *as = NULL; |
1230 | ||
1231 | /* Add attribute to symbol. The copy is so that we can reset the | |
1232 | dimension attribute. */ | |
1233 | attr = current_attr; | |
1234 | attr.dimension = 0; | |
be59db2d | 1235 | attr.codimension = 0; |
6de9cd9a | 1236 | |
524af0d6 JB |
1237 | if (!gfc_copy_attr (&sym->attr, &attr, var_locus)) |
1238 | return false; | |
6de9cd9a | 1239 | |
a8b3b0b6 CR |
1240 | /* Finish any work that may need to be done for the binding label, |
1241 | if it's a bind(c). The bind(c) attr is found before the symbol | |
1242 | is made, and before the symbol name (for data decls), so the | |
1243 | current_ts is holding the binding label, or nothing if the | |
1244 | name= attr wasn't given. Therefore, test here if we're dealing | |
1245 | with a bind(c) and make sure the binding label is set correctly. */ | |
1246 | if (sym->attr.is_bind_c == 1) | |
1247 | { | |
62603fae | 1248 | if (!sym->binding_label) |
a8b3b0b6 | 1249 | { |
ad4a2f64 TB |
1250 | /* Set the binding label and verify that if a NAME= was specified |
1251 | then only one identifier was in the entity-decl-list. */ | |
524af0d6 JB |
1252 | if (!set_binding_label (&sym->binding_label, sym->name, |
1253 | num_idents_on_line)) | |
1254 | return false; | |
a8b3b0b6 CR |
1255 | } |
1256 | } | |
1257 | ||
1258 | /* See if we know we're in a common block, and if it's a bind(c) | |
1259 | common then we need to make sure we're an interoperable type. */ | |
1260 | if (sym->attr.in_common == 1) | |
1261 | { | |
1262 | /* Test the common block object. */ | |
1263 | if (sym->common_block != NULL && sym->common_block->is_bind_c == 1 | |
1264 | && sym->ts.is_c_interop != 1) | |
1265 | { | |
4daa149b | 1266 | gfc_error_now ("Variable %qs in common block %qs at %C " |
a8b3b0b6 | 1267 | "must be declared with a C interoperable " |
4daa149b | 1268 | "kind since common block %qs is BIND(C)", |
a8b3b0b6 CR |
1269 | sym->name, sym->common_block->name, |
1270 | sym->common_block->name); | |
1271 | gfc_clear_error (); | |
1272 | } | |
1273 | } | |
1274 | ||
9a3db5a3 PT |
1275 | sym->attr.implied_index = 0; |
1276 | ||
528622fd | 1277 | if (sym->ts.type == BT_CLASS) |
9b6da3c7 | 1278 | return gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as); |
cf2b3c22 | 1279 | |
524af0d6 | 1280 | return true; |
6de9cd9a DN |
1281 | } |
1282 | ||
636dff67 | 1283 | |
df7cc9b5 | 1284 | /* Set character constant to the given length. The constant will be padded or |
d2848082 DK |
1285 | truncated. If we're inside an array constructor without a typespec, we |
1286 | additionally check that all elements have the same length; check_len -1 | |
1287 | means no checking. */ | |
df7cc9b5 FW |
1288 | |
1289 | void | |
d2848082 | 1290 | gfc_set_constant_character_len (int len, gfc_expr *expr, int check_len) |
df7cc9b5 | 1291 | { |
00660189 | 1292 | gfc_char_t *s; |
df7cc9b5 FW |
1293 | int slen; |
1294 | ||
1295 | gcc_assert (expr->expr_type == EXPR_CONSTANT); | |
d393bbd7 | 1296 | gcc_assert (expr->ts.type == BT_CHARACTER); |
df7cc9b5 FW |
1297 | |
1298 | slen = expr->value.character.length; | |
1299 | if (len != slen) | |
1300 | { | |
00660189 FXC |
1301 | s = gfc_get_wide_string (len + 1); |
1302 | memcpy (s, expr->value.character.string, | |
1303 | MIN (len, slen) * sizeof (gfc_char_t)); | |
df7cc9b5 | 1304 | if (len > slen) |
00660189 | 1305 | gfc_wide_memset (&s[slen], ' ', len - slen); |
2220652d | 1306 | |
a96c39ea | 1307 | if (warn_character_truncation && slen > len) |
4daa149b TB |
1308 | gfc_warning_now (OPT_Wcharacter_truncation, |
1309 | "CHARACTER expression at %L is being truncated " | |
1310 | "(%d/%d)", &expr->where, slen, len); | |
2220652d PT |
1311 | |
1312 | /* Apply the standard by 'hand' otherwise it gets cleared for | |
1313 | initializers. */ | |
d2848082 DK |
1314 | if (check_len != -1 && slen != check_len |
1315 | && !(gfc_option.allow_std & GFC_STD_GNU)) | |
2220652d PT |
1316 | gfc_error_now ("The CHARACTER elements of the array constructor " |
1317 | "at %L must have the same length (%d/%d)", | |
d2848082 | 1318 | &expr->where, slen, check_len); |
2220652d | 1319 | |
150675a8 | 1320 | s[len] = '\0'; |
cede9502 | 1321 | free (expr->value.character.string); |
df7cc9b5 FW |
1322 | expr->value.character.string = s; |
1323 | expr->value.character.length = len; | |
1324 | } | |
1325 | } | |
6de9cd9a | 1326 | |
25d8f0a2 | 1327 | |
d51347f9 | 1328 | /* Function to create and update the enumerator history |
25d8f0a2 | 1329 | using the information passed as arguments. |
d51347f9 TB |
1330 | Pointer "max_enum" is also updated, to point to |
1331 | enum history node containing largest initializer. | |
25d8f0a2 TS |
1332 | |
1333 | SYM points to the symbol node of enumerator. | |
66e4ab31 | 1334 | INIT points to its enumerator value. */ |
25d8f0a2 | 1335 | |
d51347f9 | 1336 | static void |
636dff67 | 1337 | create_enum_history (gfc_symbol *sym, gfc_expr *init) |
25d8f0a2 TS |
1338 | { |
1339 | enumerator_history *new_enum_history; | |
1340 | gcc_assert (sym != NULL && init != NULL); | |
1341 | ||
ece3f663 | 1342 | new_enum_history = XCNEW (enumerator_history); |
25d8f0a2 TS |
1343 | |
1344 | new_enum_history->sym = sym; | |
1345 | new_enum_history->initializer = init; | |
1346 | new_enum_history->next = NULL; | |
1347 | ||
1348 | if (enum_history == NULL) | |
1349 | { | |
1350 | enum_history = new_enum_history; | |
1351 | max_enum = enum_history; | |
1352 | } | |
1353 | else | |
1354 | { | |
1355 | new_enum_history->next = enum_history; | |
1356 | enum_history = new_enum_history; | |
1357 | ||
d51347f9 | 1358 | if (mpz_cmp (max_enum->initializer->value.integer, |
25d8f0a2 | 1359 | new_enum_history->initializer->value.integer) < 0) |
636dff67 | 1360 | max_enum = new_enum_history; |
25d8f0a2 TS |
1361 | } |
1362 | } | |
1363 | ||
1364 | ||
d51347f9 | 1365 | /* Function to free enum kind history. */ |
25d8f0a2 | 1366 | |
d51347f9 | 1367 | void |
636dff67 | 1368 | gfc_free_enum_history (void) |
25d8f0a2 | 1369 | { |
d51347f9 TB |
1370 | enumerator_history *current = enum_history; |
1371 | enumerator_history *next; | |
25d8f0a2 TS |
1372 | |
1373 | while (current != NULL) | |
1374 | { | |
1375 | next = current->next; | |
cede9502 | 1376 | free (current); |
25d8f0a2 TS |
1377 | current = next; |
1378 | } | |
1379 | max_enum = NULL; | |
1380 | enum_history = NULL; | |
1381 | } | |
1382 | ||
1383 | ||
6de9cd9a DN |
1384 | /* Function called by variable_decl() that adds an initialization |
1385 | expression to a symbol. */ | |
1386 | ||
524af0d6 | 1387 | static bool |
66e4ab31 | 1388 | add_init_expr_to_sym (const char *name, gfc_expr **initp, locus *var_locus) |
6de9cd9a DN |
1389 | { |
1390 | symbol_attribute attr; | |
1391 | gfc_symbol *sym; | |
1392 | gfc_expr *init; | |
1393 | ||
1394 | init = *initp; | |
08a6b8e0 | 1395 | if (find_special (name, &sym, false)) |
524af0d6 | 1396 | return false; |
6de9cd9a DN |
1397 | |
1398 | attr = sym->attr; | |
1399 | ||
1400 | /* If this symbol is confirming an implicit parameter type, | |
1401 | then an initialization expression is not allowed. */ | |
1402 | if (attr.flavor == FL_PARAMETER | |
1403 | && sym->value != NULL | |
1404 | && *initp != NULL) | |
1405 | { | |
c4100eae | 1406 | gfc_error ("Initializer not allowed for PARAMETER %qs at %C", |
6de9cd9a | 1407 | sym->name); |
524af0d6 | 1408 | return false; |
6de9cd9a DN |
1409 | } |
1410 | ||
1411 | if (init == NULL) | |
1412 | { | |
1413 | /* An initializer is required for PARAMETER declarations. */ | |
1414 | if (attr.flavor == FL_PARAMETER) | |
1415 | { | |
1416 | gfc_error ("PARAMETER at %L is missing an initializer", var_locus); | |
524af0d6 | 1417 | return false; |
6de9cd9a DN |
1418 | } |
1419 | } | |
1420 | else | |
1421 | { | |
1422 | /* If a variable appears in a DATA block, it cannot have an | |
1de8a836 | 1423 | initializer. */ |
6de9cd9a DN |
1424 | if (sym->attr.data) |
1425 | { | |
c4100eae | 1426 | gfc_error ("Variable %qs at %C with an initializer already " |
636dff67 | 1427 | "appears in a DATA statement", sym->name); |
524af0d6 | 1428 | return false; |
6de9cd9a DN |
1429 | } |
1430 | ||
75d17889 | 1431 | /* Check if the assignment can happen. This has to be put off |
80f95228 | 1432 | until later for derived type variables and procedure pointers. */ |
6de9cd9a | 1433 | if (sym->ts.type != BT_DERIVED && init->ts.type != BT_DERIVED |
cf2b3c22 | 1434 | && sym->ts.type != BT_CLASS && init->ts.type != BT_CLASS |
f5acf0f2 | 1435 | && !sym->attr.proc_pointer |
524af0d6 JB |
1436 | && !gfc_check_assign_symbol (sym, NULL, init)) |
1437 | return false; | |
6de9cd9a | 1438 | |
bc21d315 | 1439 | if (sym->ts.type == BT_CHARACTER && sym->ts.u.cl |
51b128a0 | 1440 | && init->ts.type == BT_CHARACTER) |
df7cc9b5 FW |
1441 | { |
1442 | /* Update symbol character length according initializer. */ | |
524af0d6 JB |
1443 | if (!gfc_check_assign_symbol (sym, NULL, init)) |
1444 | return false; | |
51b128a0 | 1445 | |
bc21d315 | 1446 | if (sym->ts.u.cl->length == NULL) |
df7cc9b5 | 1447 | { |
a99288e5 | 1448 | int clen; |
66e4ab31 SK |
1449 | /* If there are multiple CHARACTER variables declared on the |
1450 | same line, we don't want them to share the same length. */ | |
b76e28c6 | 1451 | sym->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
96f4873b | 1452 | |
a99288e5 PT |
1453 | if (sym->attr.flavor == FL_PARAMETER) |
1454 | { | |
1455 | if (init->expr_type == EXPR_CONSTANT) | |
1456 | { | |
1457 | clen = init->value.character.length; | |
b7e75771 JD |
1458 | sym->ts.u.cl->length |
1459 | = gfc_get_int_expr (gfc_default_integer_kind, | |
1460 | NULL, clen); | |
a99288e5 PT |
1461 | } |
1462 | else if (init->expr_type == EXPR_ARRAY) | |
1463 | { | |
5912da3c | 1464 | clen = mpz_get_si (init->ts.u.cl->length->value.integer); |
b7e75771 JD |
1465 | sym->ts.u.cl->length |
1466 | = gfc_get_int_expr (gfc_default_integer_kind, | |
1467 | NULL, clen); | |
a99288e5 | 1468 | } |
bc21d315 JW |
1469 | else if (init->ts.u.cl && init->ts.u.cl->length) |
1470 | sym->ts.u.cl->length = | |
1471 | gfc_copy_expr (sym->value->ts.u.cl->length); | |
a99288e5 | 1472 | } |
df7cc9b5 FW |
1473 | } |
1474 | /* Update initializer character length according symbol. */ | |
bc21d315 | 1475 | else if (sym->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
df7cc9b5 | 1476 | { |
d30ecc9c SK |
1477 | int len; |
1478 | ||
1479 | if (!gfc_specification_expr (sym->ts.u.cl->length)) | |
1480 | return false; | |
1481 | ||
1482 | len = mpz_get_si (sym->ts.u.cl->length->value.integer); | |
df7cc9b5 FW |
1483 | |
1484 | if (init->expr_type == EXPR_CONSTANT) | |
d2848082 | 1485 | gfc_set_constant_character_len (len, init, -1); |
df7cc9b5 FW |
1486 | else if (init->expr_type == EXPR_ARRAY) |
1487 | { | |
b7e75771 JD |
1488 | gfc_constructor *c; |
1489 | ||
dcdc7b6c PT |
1490 | /* Build a new charlen to prevent simplification from |
1491 | deleting the length before it is resolved. */ | |
b76e28c6 | 1492 | init->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
bc21d315 | 1493 | init->ts.u.cl->length = gfc_copy_expr (sym->ts.u.cl->length); |
dcdc7b6c | 1494 | |
b7e75771 JD |
1495 | for (c = gfc_constructor_first (init->value.constructor); |
1496 | c; c = gfc_constructor_next (c)) | |
1497 | gfc_set_constant_character_len (len, c->expr, -1); | |
df7cc9b5 FW |
1498 | } |
1499 | } | |
1500 | } | |
1501 | ||
f5ca06e6 DK |
1502 | /* If sym is implied-shape, set its upper bounds from init. */ |
1503 | if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension | |
1504 | && sym->as->type == AS_IMPLIED_SHAPE) | |
1505 | { | |
1506 | int dim; | |
1507 | ||
1508 | if (init->rank == 0) | |
1509 | { | |
1510 | gfc_error ("Can't initialize implied-shape array at %L" | |
1511 | " with scalar", &sym->declared_at); | |
524af0d6 | 1512 | return false; |
f5ca06e6 | 1513 | } |
f5ca06e6 DK |
1514 | |
1515 | /* Shape should be present, we get an initialization expression. */ | |
1516 | gcc_assert (init->shape); | |
1517 | ||
1518 | for (dim = 0; dim < sym->as->rank; ++dim) | |
1519 | { | |
1520 | int k; | |
1521 | gfc_expr* lower; | |
1522 | gfc_expr* e; | |
f5acf0f2 | 1523 | |
f5ca06e6 DK |
1524 | lower = sym->as->lower[dim]; |
1525 | if (lower->expr_type != EXPR_CONSTANT) | |
1526 | { | |
1527 | gfc_error ("Non-constant lower bound in implied-shape" | |
1528 | " declaration at %L", &lower->where); | |
524af0d6 | 1529 | return false; |
f5ca06e6 DK |
1530 | } |
1531 | ||
1532 | /* All dimensions must be without upper bound. */ | |
1533 | gcc_assert (!sym->as->upper[dim]); | |
1534 | ||
1535 | k = lower->ts.kind; | |
1536 | e = gfc_get_constant_expr (BT_INTEGER, k, &sym->declared_at); | |
1537 | mpz_add (e->value.integer, | |
1538 | lower->value.integer, init->shape[dim]); | |
1539 | mpz_sub_ui (e->value.integer, e->value.integer, 1); | |
1540 | sym->as->upper[dim] = e; | |
1541 | } | |
1542 | ||
1543 | sym->as->type = AS_EXPLICIT; | |
1544 | } | |
1545 | ||
a8b3b0b6 CR |
1546 | /* Need to check if the expression we initialized this |
1547 | to was one of the iso_c_binding named constants. If so, | |
1548 | and we're a parameter (constant), let it be iso_c. | |
1549 | For example: | |
1550 | integer(c_int), parameter :: my_int = c_int | |
1551 | integer(my_int) :: my_int_2 | |
1552 | If we mark my_int as iso_c (since we can see it's value | |
1553 | is equal to one of the named constants), then my_int_2 | |
1554 | will be considered C interoperable. */ | |
1555 | if (sym->ts.type != BT_CHARACTER && sym->ts.type != BT_DERIVED) | |
1556 | { | |
1557 | sym->ts.is_iso_c |= init->ts.is_iso_c; | |
1558 | sym->ts.is_c_interop |= init->ts.is_c_interop; | |
1559 | /* attr bits needed for module files. */ | |
1560 | sym->attr.is_iso_c |= init->ts.is_iso_c; | |
1561 | sym->attr.is_c_interop |= init->ts.is_c_interop; | |
1562 | if (init->ts.is_iso_c) | |
1563 | sym->ts.f90_type = init->ts.f90_type; | |
1564 | } | |
b7e75771 | 1565 | |
6de9cd9a DN |
1566 | /* Add initializer. Make sure we keep the ranks sane. */ |
1567 | if (sym->attr.dimension && init->rank == 0) | |
a9b43781 PT |
1568 | { |
1569 | mpz_t size; | |
1570 | gfc_expr *array; | |
a9b43781 PT |
1571 | int n; |
1572 | if (sym->attr.flavor == FL_PARAMETER | |
1573 | && init->expr_type == EXPR_CONSTANT | |
524af0d6 | 1574 | && spec_size (sym->as, &size) |
a9b43781 PT |
1575 | && mpz_cmp_si (size, 0) > 0) |
1576 | { | |
b7e75771 JD |
1577 | array = gfc_get_array_expr (init->ts.type, init->ts.kind, |
1578 | &init->where); | |
a9b43781 | 1579 | for (n = 0; n < (int)mpz_get_si (size); n++) |
b7e75771 JD |
1580 | gfc_constructor_append_expr (&array->value.constructor, |
1581 | n == 0 | |
1582 | ? init | |
1583 | : gfc_copy_expr (init), | |
1584 | &init->where); | |
f5acf0f2 | 1585 | |
a9b43781 PT |
1586 | array->shape = gfc_get_shape (sym->as->rank); |
1587 | for (n = 0; n < sym->as->rank; n++) | |
1588 | spec_dimen_size (sym->as, n, &array->shape[n]); | |
1589 | ||
1590 | init = array; | |
1591 | mpz_clear (size); | |
1592 | } | |
1593 | init->rank = sym->as->rank; | |
1594 | } | |
6de9cd9a DN |
1595 | |
1596 | sym->value = init; | |
ef7236d2 DF |
1597 | if (sym->attr.save == SAVE_NONE) |
1598 | sym->attr.save = SAVE_IMPLICIT; | |
6de9cd9a DN |
1599 | *initp = NULL; |
1600 | } | |
1601 | ||
524af0d6 | 1602 | return true; |
6de9cd9a DN |
1603 | } |
1604 | ||
1605 | ||
1606 | /* Function called by variable_decl() that adds a name to a structure | |
1607 | being built. */ | |
1608 | ||
524af0d6 | 1609 | static bool |
636dff67 SK |
1610 | build_struct (const char *name, gfc_charlen *cl, gfc_expr **init, |
1611 | gfc_array_spec **as) | |
6de9cd9a DN |
1612 | { |
1613 | gfc_component *c; | |
524af0d6 | 1614 | bool t = true; |
6de9cd9a | 1615 | |
619dd721 | 1616 | /* F03:C438/C439. If the current symbol is of the same derived type that we're |
6de9cd9a | 1617 | constructing, it must have the pointer attribute. */ |
619dd721 | 1618 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
bc21d315 | 1619 | && current_ts.u.derived == gfc_current_block () |
6de9cd9a DN |
1620 | && current_attr.pointer == 0) |
1621 | { | |
1622 | gfc_error ("Component at %C must have the POINTER attribute"); | |
524af0d6 | 1623 | return false; |
6de9cd9a DN |
1624 | } |
1625 | ||
636dff67 | 1626 | if (gfc_current_block ()->attr.pointer && (*as)->rank != 0) |
6de9cd9a DN |
1627 | { |
1628 | if ((*as)->type != AS_DEFERRED && (*as)->type != AS_EXPLICIT) | |
1629 | { | |
1630 | gfc_error ("Array component of structure at %C must have explicit " | |
1631 | "or deferred shape"); | |
524af0d6 | 1632 | return false; |
6de9cd9a DN |
1633 | } |
1634 | } | |
1635 | ||
524af0d6 JB |
1636 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
1637 | return false; | |
6de9cd9a DN |
1638 | |
1639 | c->ts = current_ts; | |
bc21d315 JW |
1640 | if (c->ts.type == BT_CHARACTER) |
1641 | c->ts.u.cl = cl; | |
d4b7d0f0 | 1642 | c->attr = current_attr; |
6de9cd9a DN |
1643 | |
1644 | c->initializer = *init; | |
1645 | *init = NULL; | |
1646 | ||
1647 | c->as = *as; | |
1648 | if (c->as != NULL) | |
be59db2d TB |
1649 | { |
1650 | if (c->as->corank) | |
1651 | c->attr.codimension = 1; | |
1652 | if (c->as->rank) | |
1653 | c->attr.dimension = 1; | |
1654 | } | |
6de9cd9a DN |
1655 | *as = NULL; |
1656 | ||
28d08315 PT |
1657 | /* Should this ever get more complicated, combine with similar section |
1658 | in add_init_expr_to_sym into a separate function. */ | |
f4347334 ZG |
1659 | if (c->ts.type == BT_CHARACTER && !c->attr.pointer && c->initializer |
1660 | && c->ts.u.cl | |
bc21d315 | 1661 | && c->ts.u.cl->length && c->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
28d08315 | 1662 | { |
d2848082 DK |
1663 | int len; |
1664 | ||
bc21d315 JW |
1665 | gcc_assert (c->ts.u.cl && c->ts.u.cl->length); |
1666 | gcc_assert (c->ts.u.cl->length->expr_type == EXPR_CONSTANT); | |
1667 | gcc_assert (c->ts.u.cl->length->ts.type == BT_INTEGER); | |
d2848082 | 1668 | |
bc21d315 | 1669 | len = mpz_get_si (c->ts.u.cl->length->value.integer); |
28d08315 PT |
1670 | |
1671 | if (c->initializer->expr_type == EXPR_CONSTANT) | |
d2848082 | 1672 | gfc_set_constant_character_len (len, c->initializer, -1); |
bc21d315 JW |
1673 | else if (mpz_cmp (c->ts.u.cl->length->value.integer, |
1674 | c->initializer->ts.u.cl->length->value.integer)) | |
28d08315 | 1675 | { |
b7e75771 JD |
1676 | gfc_constructor *ctor; |
1677 | ctor = gfc_constructor_first (c->initializer->value.constructor); | |
d2848082 | 1678 | |
2f4d1994 | 1679 | if (ctor) |
d2848082 | 1680 | { |
2f4d1994 | 1681 | int first_len; |
b7e75771 JD |
1682 | bool has_ts = (c->initializer->ts.u.cl |
1683 | && c->initializer->ts.u.cl->length_from_typespec); | |
2f4d1994 ILT |
1684 | |
1685 | /* Remember the length of the first element for checking | |
1686 | that all elements *in the constructor* have the same | |
1687 | length. This need not be the length of the LHS! */ | |
1688 | gcc_assert (ctor->expr->expr_type == EXPR_CONSTANT); | |
1689 | gcc_assert (ctor->expr->ts.type == BT_CHARACTER); | |
1690 | first_len = ctor->expr->value.character.length; | |
1691 | ||
b7e75771 JD |
1692 | for ( ; ctor; ctor = gfc_constructor_next (ctor)) |
1693 | if (ctor->expr->expr_type == EXPR_CONSTANT) | |
d2848082 | 1694 | { |
b7e75771 JD |
1695 | gfc_set_constant_character_len (len, ctor->expr, |
1696 | has_ts ? -1 : first_len); | |
1697 | ctor->expr->ts.u.cl->length = gfc_copy_expr (c->ts.u.cl->length); | |
d2848082 | 1698 | } |
d2848082 | 1699 | } |
28d08315 PT |
1700 | } |
1701 | } | |
1702 | ||
6de9cd9a | 1703 | /* Check array components. */ |
d4b7d0f0 | 1704 | if (!c->attr.dimension) |
2e23972e | 1705 | goto scalar; |
6de9cd9a | 1706 | |
d4b7d0f0 | 1707 | if (c->attr.pointer) |
6de9cd9a DN |
1708 | { |
1709 | if (c->as->type != AS_DEFERRED) | |
1710 | { | |
5046aff5 PT |
1711 | gfc_error ("Pointer array component of structure at %C must have a " |
1712 | "deferred shape"); | |
524af0d6 | 1713 | t = false; |
5046aff5 PT |
1714 | } |
1715 | } | |
d4b7d0f0 | 1716 | else if (c->attr.allocatable) |
5046aff5 PT |
1717 | { |
1718 | if (c->as->type != AS_DEFERRED) | |
1719 | { | |
1720 | gfc_error ("Allocatable component of structure at %C must have a " | |
1721 | "deferred shape"); | |
524af0d6 | 1722 | t = false; |
6de9cd9a DN |
1723 | } |
1724 | } | |
1725 | else | |
1726 | { | |
1727 | if (c->as->type != AS_EXPLICIT) | |
1728 | { | |
636dff67 SK |
1729 | gfc_error ("Array component of structure at %C must have an " |
1730 | "explicit shape"); | |
524af0d6 | 1731 | t = false; |
6de9cd9a DN |
1732 | } |
1733 | } | |
1734 | ||
2e23972e JW |
1735 | scalar: |
1736 | if (c->ts.type == BT_CLASS) | |
17643884 | 1737 | { |
9b6da3c7 | 1738 | bool t2 = gfc_build_class_symbol (&c->ts, &c->attr, &c->as); |
ea59b186 | 1739 | |
524af0d6 | 1740 | if (t) |
ea59b186 | 1741 | t = t2; |
17643884 JW |
1742 | } |
1743 | ||
2e23972e | 1744 | return t; |
6de9cd9a DN |
1745 | } |
1746 | ||
1747 | ||
1748 | /* Match a 'NULL()', and possibly take care of some side effects. */ | |
1749 | ||
1750 | match | |
636dff67 | 1751 | gfc_match_null (gfc_expr **result) |
6de9cd9a DN |
1752 | { |
1753 | gfc_symbol *sym; | |
576f6da6 | 1754 | match m, m2 = MATCH_NO; |
6de9cd9a | 1755 | |
576f6da6 TB |
1756 | if ((m = gfc_match (" null ( )")) == MATCH_ERROR) |
1757 | return MATCH_ERROR; | |
1758 | ||
1759 | if (m == MATCH_NO) | |
1760 | { | |
1761 | locus old_loc; | |
1762 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
1763 | ||
94241120 | 1764 | if ((m2 = gfc_match (" null (")) != MATCH_YES) |
576f6da6 TB |
1765 | return m2; |
1766 | ||
1767 | old_loc = gfc_current_locus; | |
1768 | if ((m2 = gfc_match (" %n ) ", name)) == MATCH_ERROR) | |
1769 | return MATCH_ERROR; | |
1770 | if (m2 != MATCH_YES | |
1771 | && ((m2 = gfc_match (" mold = %n )", name)) == MATCH_ERROR)) | |
1772 | return MATCH_ERROR; | |
1773 | if (m2 == MATCH_NO) | |
1774 | { | |
1775 | gfc_current_locus = old_loc; | |
1776 | return MATCH_NO; | |
1777 | } | |
1778 | } | |
6de9cd9a DN |
1779 | |
1780 | /* The NULL symbol now has to be/become an intrinsic function. */ | |
1781 | if (gfc_get_symbol ("null", NULL, &sym)) | |
1782 | { | |
1783 | gfc_error ("NULL() initialization at %C is ambiguous"); | |
1784 | return MATCH_ERROR; | |
1785 | } | |
1786 | ||
1787 | gfc_intrinsic_symbol (sym); | |
1788 | ||
1789 | if (sym->attr.proc != PROC_INTRINSIC | |
07416986 | 1790 | && !(sym->attr.use_assoc && sym->attr.intrinsic) |
524af0d6 JB |
1791 | && (!gfc_add_procedure(&sym->attr, PROC_INTRINSIC, sym->name, NULL) |
1792 | || !gfc_add_function (&sym->attr, sym->name, NULL))) | |
6de9cd9a DN |
1793 | return MATCH_ERROR; |
1794 | ||
b7e75771 | 1795 | *result = gfc_get_null_expr (&gfc_current_locus); |
6de9cd9a | 1796 | |
576f6da6 TB |
1797 | /* Invalid per F2008, C512. */ |
1798 | if (m2 == MATCH_YES) | |
1799 | { | |
1800 | gfc_error ("NULL() initialization at %C may not have MOLD"); | |
1801 | return MATCH_ERROR; | |
1802 | } | |
1803 | ||
6de9cd9a DN |
1804 | return MATCH_YES; |
1805 | } | |
1806 | ||
1807 | ||
80f95228 JW |
1808 | /* Match the initialization expr for a data pointer or procedure pointer. */ |
1809 | ||
1810 | static match | |
1811 | match_pointer_init (gfc_expr **init, int procptr) | |
1812 | { | |
1813 | match m; | |
1814 | ||
1815 | if (gfc_pure (NULL) && gfc_state_stack->state != COMP_DERIVED) | |
1816 | { | |
1817 | gfc_error ("Initialization of pointer at %C is not allowed in " | |
1818 | "a PURE procedure"); | |
1819 | return MATCH_ERROR; | |
1820 | } | |
ccd7751b | 1821 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
80f95228 | 1822 | |
eea58adb | 1823 | /* Match NULL() initialization. */ |
80f95228 JW |
1824 | m = gfc_match_null (init); |
1825 | if (m != MATCH_NO) | |
1826 | return m; | |
1827 | ||
1828 | /* Match non-NULL initialization. */ | |
837c4b78 | 1829 | gfc_matching_ptr_assignment = !procptr; |
80f95228 JW |
1830 | gfc_matching_procptr_assignment = procptr; |
1831 | m = gfc_match_rvalue (init); | |
837c4b78 | 1832 | gfc_matching_ptr_assignment = 0; |
80f95228 JW |
1833 | gfc_matching_procptr_assignment = 0; |
1834 | if (m == MATCH_ERROR) | |
1835 | return MATCH_ERROR; | |
1836 | else if (m == MATCH_NO) | |
1837 | { | |
1838 | gfc_error ("Error in pointer initialization at %C"); | |
1839 | return MATCH_ERROR; | |
1840 | } | |
1841 | ||
dc9a54fa JW |
1842 | if (!procptr && !gfc_resolve_expr (*init)) |
1843 | return MATCH_ERROR; | |
f5acf0f2 | 1844 | |
524af0d6 JB |
1845 | if (!gfc_notify_std (GFC_STD_F2008, "non-NULL pointer " |
1846 | "initialization at %C")) | |
80f95228 JW |
1847 | return MATCH_ERROR; |
1848 | ||
1849 | return MATCH_YES; | |
1850 | } | |
1851 | ||
1852 | ||
524af0d6 | 1853 | static bool |
bb9de0c4 JW |
1854 | check_function_name (char *name) |
1855 | { | |
1856 | /* In functions that have a RESULT variable defined, the function name always | |
1857 | refers to function calls. Therefore, the name is not allowed to appear in | |
1858 | specification statements. When checking this, be careful about | |
1859 | 'hidden' procedure pointer results ('ppr@'). */ | |
1860 | ||
1861 | if (gfc_current_state () == COMP_FUNCTION) | |
1862 | { | |
1863 | gfc_symbol *block = gfc_current_block (); | |
1864 | if (block && block->result && block->result != block | |
1865 | && strcmp (block->result->name, "ppr@") != 0 | |
1866 | && strcmp (block->name, name) == 0) | |
1867 | { | |
c4100eae | 1868 | gfc_error ("Function name %qs not allowed at %C", name); |
524af0d6 | 1869 | return false; |
bb9de0c4 JW |
1870 | } |
1871 | } | |
1872 | ||
524af0d6 | 1873 | return true; |
bb9de0c4 JW |
1874 | } |
1875 | ||
1876 | ||
6de9cd9a DN |
1877 | /* Match a variable name with an optional initializer. When this |
1878 | subroutine is called, a variable is expected to be parsed next. | |
1879 | Depending on what is happening at the moment, updates either the | |
1880 | symbol table or the current interface. */ | |
1881 | ||
1882 | static match | |
949d5b72 | 1883 | variable_decl (int elem) |
6de9cd9a DN |
1884 | { |
1885 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
1886 | gfc_expr *initializer, *char_len; | |
1887 | gfc_array_spec *as; | |
83d890b9 | 1888 | gfc_array_spec *cp_as; /* Extra copy for Cray Pointees. */ |
6de9cd9a | 1889 | gfc_charlen *cl; |
e69afb29 | 1890 | bool cl_deferred; |
6de9cd9a DN |
1891 | locus var_locus; |
1892 | match m; | |
524af0d6 | 1893 | bool t; |
83d890b9 | 1894 | gfc_symbol *sym; |
6de9cd9a DN |
1895 | |
1896 | initializer = NULL; | |
1897 | as = NULL; | |
83d890b9 | 1898 | cp_as = NULL; |
6de9cd9a DN |
1899 | |
1900 | /* When we get here, we've just matched a list of attributes and | |
1901 | maybe a type and a double colon. The next thing we expect to see | |
1902 | is the name of the symbol. */ | |
1903 | m = gfc_match_name (name); | |
1904 | if (m != MATCH_YES) | |
1905 | goto cleanup; | |
1906 | ||
63645982 | 1907 | var_locus = gfc_current_locus; |
6de9cd9a DN |
1908 | |
1909 | /* Now we could see the optional array spec. or character length. */ | |
be59db2d | 1910 | m = gfc_match_array_spec (&as, true, true); |
11126dc0 | 1911 | if (m == MATCH_ERROR) |
6de9cd9a | 1912 | goto cleanup; |
25d8f0a2 | 1913 | |
6de9cd9a DN |
1914 | if (m == MATCH_NO) |
1915 | as = gfc_copy_array_spec (current_as); | |
63fbf586 | 1916 | else if (current_as |
524af0d6 | 1917 | && !merge_array_spec (current_as, as, true)) |
63fbf586 TB |
1918 | { |
1919 | m = MATCH_ERROR; | |
1920 | goto cleanup; | |
1921 | } | |
6de9cd9a | 1922 | |
c61819ff | 1923 | if (flag_cray_pointer) |
11126dc0 AL |
1924 | cp_as = gfc_copy_array_spec (as); |
1925 | ||
f5ca06e6 DK |
1926 | /* At this point, we know for sure if the symbol is PARAMETER and can thus |
1927 | determine (and check) whether it can be implied-shape. If it | |
1928 | was parsed as assumed-size, change it because PARAMETERs can not | |
1929 | be assumed-size. */ | |
1930 | if (as) | |
1931 | { | |
1932 | if (as->type == AS_IMPLIED_SHAPE && current_attr.flavor != FL_PARAMETER) | |
1933 | { | |
1934 | m = MATCH_ERROR; | |
c4100eae | 1935 | gfc_error ("Non-PARAMETER symbol %qs at %L can't be implied-shape", |
f5ca06e6 DK |
1936 | name, &var_locus); |
1937 | goto cleanup; | |
1938 | } | |
1939 | ||
1940 | if (as->type == AS_ASSUMED_SIZE && as->rank == 1 | |
1941 | && current_attr.flavor == FL_PARAMETER) | |
1942 | as->type = AS_IMPLIED_SHAPE; | |
1943 | ||
1944 | if (as->type == AS_IMPLIED_SHAPE | |
524af0d6 JB |
1945 | && !gfc_notify_std (GFC_STD_F2008, "Implied-shape array at %L", |
1946 | &var_locus)) | |
f5ca06e6 DK |
1947 | { |
1948 | m = MATCH_ERROR; | |
1949 | goto cleanup; | |
1950 | } | |
1951 | } | |
1952 | ||
6de9cd9a DN |
1953 | char_len = NULL; |
1954 | cl = NULL; | |
e69afb29 | 1955 | cl_deferred = false; |
6de9cd9a DN |
1956 | |
1957 | if (current_ts.type == BT_CHARACTER) | |
1958 | { | |
2767f2cc | 1959 | switch (match_char_length (&char_len, &cl_deferred, false)) |
6de9cd9a DN |
1960 | { |
1961 | case MATCH_YES: | |
b76e28c6 | 1962 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
1963 | |
1964 | cl->length = char_len; | |
1965 | break; | |
1966 | ||
949d5b72 | 1967 | /* Non-constant lengths need to be copied after the first |
9b21a380 | 1968 | element. Also copy assumed lengths. */ |
6de9cd9a | 1969 | case MATCH_NO: |
9b21a380 | 1970 | if (elem > 1 |
bc21d315 JW |
1971 | && (current_ts.u.cl->length == NULL |
1972 | || current_ts.u.cl->length->expr_type != EXPR_CONSTANT)) | |
949d5b72 | 1973 | { |
b76e28c6 | 1974 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
bc21d315 | 1975 | cl->length = gfc_copy_expr (current_ts.u.cl->length); |
949d5b72 PT |
1976 | } |
1977 | else | |
bc21d315 | 1978 | cl = current_ts.u.cl; |
949d5b72 | 1979 | |
e69afb29 SK |
1980 | cl_deferred = current_ts.deferred; |
1981 | ||
6de9cd9a DN |
1982 | break; |
1983 | ||
1984 | case MATCH_ERROR: | |
1985 | goto cleanup; | |
1986 | } | |
1987 | } | |
1988 | ||
4668d6f9 PT |
1989 | /* The dummy arguments and result of the abreviated form of MODULE |
1990 | PROCEDUREs, used in SUBMODULES should not be redefined. */ | |
1991 | if (gfc_current_ns->proc_name | |
1992 | && gfc_current_ns->proc_name->abr_modproc_decl) | |
1993 | { | |
1994 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
1995 | if (sym != NULL && (sym->attr.dummy || sym->attr.result)) | |
1996 | { | |
1997 | m = MATCH_ERROR; | |
1998 | gfc_error ("'%s' at %C is a redefinition of the declaration " | |
1999 | "in the corresponding interface for MODULE " | |
2000 | "PROCEDURE '%s'", sym->name, | |
2001 | gfc_current_ns->proc_name->name); | |
2002 | goto cleanup; | |
2003 | } | |
2004 | } | |
2005 | ||
83d890b9 | 2006 | /* If this symbol has already shown up in a Cray Pointer declaration, |
88f7d6fb | 2007 | and this is not a component declaration, |
66e4ab31 | 2008 | then we want to set the type & bail out. */ |
c61819ff | 2009 | if (flag_cray_pointer && gfc_current_state () != COMP_DERIVED) |
83d890b9 AL |
2010 | { |
2011 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2012 | if (sym != NULL && sym->attr.cray_pointee) | |
2013 | { | |
2014 | sym->ts.type = current_ts.type; | |
2015 | sym->ts.kind = current_ts.kind; | |
bc21d315 JW |
2016 | sym->ts.u.cl = cl; |
2017 | sym->ts.u.derived = current_ts.u.derived; | |
a8b3b0b6 CR |
2018 | sym->ts.is_c_interop = current_ts.is_c_interop; |
2019 | sym->ts.is_iso_c = current_ts.is_iso_c; | |
83d890b9 | 2020 | m = MATCH_YES; |
f5acf0f2 | 2021 | |
83d890b9 AL |
2022 | /* Check to see if we have an array specification. */ |
2023 | if (cp_as != NULL) | |
2024 | { | |
2025 | if (sym->as != NULL) | |
2026 | { | |
e25a0da3 | 2027 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
2028 | gfc_free_array_spec (cp_as); |
2029 | m = MATCH_ERROR; | |
2030 | goto cleanup; | |
2031 | } | |
2032 | else | |
2033 | { | |
524af0d6 | 2034 | if (!gfc_set_array_spec (sym, cp_as, &var_locus)) |
83d890b9 | 2035 | gfc_internal_error ("Couldn't set pointee array spec."); |
d51347f9 | 2036 | |
83d890b9 | 2037 | /* Fix the array spec. */ |
d51347f9 | 2038 | m = gfc_mod_pointee_as (sym->as); |
83d890b9 AL |
2039 | if (m == MATCH_ERROR) |
2040 | goto cleanup; | |
2041 | } | |
d51347f9 | 2042 | } |
83d890b9 AL |
2043 | goto cleanup; |
2044 | } | |
2045 | else | |
2046 | { | |
2047 | gfc_free_array_spec (cp_as); | |
2048 | } | |
2049 | } | |
d51347f9 | 2050 | |
3070bab4 JW |
2051 | /* Procedure pointer as function result. */ |
2052 | if (gfc_current_state () == COMP_FUNCTION | |
2053 | && strcmp ("ppr@", gfc_current_block ()->name) == 0 | |
2054 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) == 0) | |
2055 | strcpy (name, "ppr@"); | |
2056 | ||
2057 | if (gfc_current_state () == COMP_FUNCTION | |
2058 | && strcmp (name, gfc_current_block ()->name) == 0 | |
2059 | && gfc_current_block ()->result | |
2060 | && strcmp ("ppr@", gfc_current_block ()->result->name) == 0) | |
2061 | strcpy (name, "ppr@"); | |
d51347f9 | 2062 | |
6de9cd9a DN |
2063 | /* OK, we've successfully matched the declaration. Now put the |
2064 | symbol in the current namespace, because it might be used in the | |
69de3b83 | 2065 | optional initialization expression for this symbol, e.g. this is |
6de9cd9a DN |
2066 | perfectly legal: |
2067 | ||
2068 | integer, parameter :: i = huge(i) | |
2069 | ||
2070 | This is only true for parameters or variables of a basic type. | |
2071 | For components of derived types, it is not true, so we don't | |
2072 | create a symbol for those yet. If we fail to create the symbol, | |
2073 | bail out. */ | |
2074 | if (gfc_current_state () != COMP_DERIVED | |
524af0d6 | 2075 | && !build_sym (name, cl, cl_deferred, &as, &var_locus)) |
6de9cd9a | 2076 | { |
72af9f0b PT |
2077 | m = MATCH_ERROR; |
2078 | goto cleanup; | |
2079 | } | |
2080 | ||
524af0d6 | 2081 | if (!check_function_name (name)) |
6de9cd9a | 2082 | { |
6de9cd9a DN |
2083 | m = MATCH_ERROR; |
2084 | goto cleanup; | |
2085 | } | |
2086 | ||
294fbfc8 TS |
2087 | /* We allow old-style initializations of the form |
2088 | integer i /2/, j(4) /3*3, 1/ | |
2089 | (if no colon has been seen). These are different from data | |
2090 | statements in that initializers are only allowed to apply to the | |
2091 | variable immediately preceding, i.e. | |
2092 | integer i, j /1, 2/ | |
2093 | is not allowed. Therefore we have to do some work manually, that | |
75d17889 | 2094 | could otherwise be left to the matchers for DATA statements. */ |
294fbfc8 TS |
2095 | |
2096 | if (!colon_seen && gfc_match (" /") == MATCH_YES) | |
2097 | { | |
524af0d6 JB |
2098 | if (!gfc_notify_std (GFC_STD_GNU, "Old-style " |
2099 | "initialization at %C")) | |
294fbfc8 | 2100 | return MATCH_ERROR; |
b18f1efc JJ |
2101 | else if (gfc_current_state () == COMP_DERIVED) |
2102 | { | |
2103 | gfc_error ("Invalid old style initialization for derived type " | |
2104 | "component at %C"); | |
2105 | m = MATCH_ERROR; | |
2106 | goto cleanup; | |
2107 | } | |
f5acf0f2 | 2108 | |
294fbfc8 TS |
2109 | return match_old_style_init (name); |
2110 | } | |
2111 | ||
6de9cd9a DN |
2112 | /* The double colon must be present in order to have initializers. |
2113 | Otherwise the statement is ambiguous with an assignment statement. */ | |
2114 | if (colon_seen) | |
2115 | { | |
2116 | if (gfc_match (" =>") == MATCH_YES) | |
2117 | { | |
6de9cd9a DN |
2118 | if (!current_attr.pointer) |
2119 | { | |
2120 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
2121 | m = MATCH_ERROR; | |
2122 | goto cleanup; | |
2123 | } | |
2124 | ||
80f95228 | 2125 | m = match_pointer_init (&initializer, 0); |
6de9cd9a DN |
2126 | if (m != MATCH_YES) |
2127 | goto cleanup; | |
6de9cd9a DN |
2128 | } |
2129 | else if (gfc_match_char ('=') == MATCH_YES) | |
2130 | { | |
2131 | if (current_attr.pointer) | |
2132 | { | |
a4d9b221 TB |
2133 | gfc_error ("Pointer initialization at %C requires %<=>%>, " |
2134 | "not %<=%>"); | |
6de9cd9a DN |
2135 | m = MATCH_ERROR; |
2136 | goto cleanup; | |
2137 | } | |
2138 | ||
2139 | m = gfc_match_init_expr (&initializer); | |
2140 | if (m == MATCH_NO) | |
2141 | { | |
2142 | gfc_error ("Expected an initialization expression at %C"); | |
2143 | m = MATCH_ERROR; | |
2144 | } | |
2145 | ||
ade20620 TB |
2146 | if (current_attr.flavor != FL_PARAMETER && gfc_pure (NULL) |
2147 | && gfc_state_stack->state != COMP_DERIVED) | |
6de9cd9a | 2148 | { |
636dff67 SK |
2149 | gfc_error ("Initialization of variable at %C is not allowed in " |
2150 | "a PURE procedure"); | |
6de9cd9a DN |
2151 | m = MATCH_ERROR; |
2152 | } | |
2153 | ||
ccd7751b TB |
2154 | if (current_attr.flavor != FL_PARAMETER |
2155 | && gfc_state_stack->state != COMP_DERIVED) | |
2156 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); | |
2157 | ||
6de9cd9a DN |
2158 | if (m != MATCH_YES) |
2159 | goto cleanup; | |
2160 | } | |
cb44ab82 VL |
2161 | } |
2162 | ||
5046aff5 PT |
2163 | if (initializer != NULL && current_attr.allocatable |
2164 | && gfc_current_state () == COMP_DERIVED) | |
2165 | { | |
636dff67 SK |
2166 | gfc_error ("Initialization of allocatable component at %C is not " |
2167 | "allowed"); | |
5046aff5 PT |
2168 | m = MATCH_ERROR; |
2169 | goto cleanup; | |
2170 | } | |
2171 | ||
54b4ba60 | 2172 | /* Add the initializer. Note that it is fine if initializer is |
6de9cd9a DN |
2173 | NULL here, because we sometimes also need to check if a |
2174 | declaration *must* have an initialization expression. */ | |
2175 | if (gfc_current_state () != COMP_DERIVED) | |
2176 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
2177 | else | |
54b4ba60 | 2178 | { |
5046aff5 | 2179 | if (current_ts.type == BT_DERIVED |
636dff67 | 2180 | && !current_attr.pointer && !initializer) |
54b4ba60 PB |
2181 | initializer = gfc_default_initializer (¤t_ts); |
2182 | t = build_struct (name, cl, &initializer, &as); | |
2183 | } | |
6de9cd9a | 2184 | |
524af0d6 | 2185 | m = (t) ? MATCH_YES : MATCH_ERROR; |
6de9cd9a DN |
2186 | |
2187 | cleanup: | |
2188 | /* Free stuff up and return. */ | |
2189 | gfc_free_expr (initializer); | |
2190 | gfc_free_array_spec (as); | |
2191 | ||
2192 | return m; | |
2193 | } | |
2194 | ||
2195 | ||
b2b81a3f BM |
2196 | /* Match an extended-f77 "TYPESPEC*bytesize"-style kind specification. |
2197 | This assumes that the byte size is equal to the kind number for | |
2198 | non-COMPLEX types, and equal to twice the kind number for COMPLEX. */ | |
6de9cd9a DN |
2199 | |
2200 | match | |
636dff67 | 2201 | gfc_match_old_kind_spec (gfc_typespec *ts) |
6de9cd9a DN |
2202 | { |
2203 | match m; | |
5cf54585 | 2204 | int original_kind; |
6de9cd9a DN |
2205 | |
2206 | if (gfc_match_char ('*') != MATCH_YES) | |
2207 | return MATCH_NO; | |
2208 | ||
5cf54585 | 2209 | m = gfc_match_small_literal_int (&ts->kind, NULL); |
6de9cd9a DN |
2210 | if (m != MATCH_YES) |
2211 | return MATCH_ERROR; | |
2212 | ||
e45b3c75 ES |
2213 | original_kind = ts->kind; |
2214 | ||
6de9cd9a | 2215 | /* Massage the kind numbers for complex types. */ |
e45b3c75 ES |
2216 | if (ts->type == BT_COMPLEX) |
2217 | { | |
2218 | if (ts->kind % 2) | |
636dff67 SK |
2219 | { |
2220 | gfc_error ("Old-style type declaration %s*%d not supported at %C", | |
2221 | gfc_basic_typename (ts->type), original_kind); | |
2222 | return MATCH_ERROR; | |
2223 | } | |
e45b3c75 | 2224 | ts->kind /= 2; |
f4347334 ZG |
2225 | |
2226 | } | |
2227 | ||
203c7ebf | 2228 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
f4347334 ZG |
2229 | ts->kind = 8; |
2230 | ||
2231 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2232 | { | |
2233 | if (ts->kind == 4) | |
2234 | { | |
203c7ebf | 2235 | if (flag_real4_kind == 8) |
f4347334 | 2236 | ts->kind = 8; |
203c7ebf | 2237 | if (flag_real4_kind == 10) |
f4347334 | 2238 | ts->kind = 10; |
203c7ebf | 2239 | if (flag_real4_kind == 16) |
f4347334 ZG |
2240 | ts->kind = 16; |
2241 | } | |
2242 | ||
2243 | if (ts->kind == 8) | |
2244 | { | |
203c7ebf | 2245 | if (flag_real8_kind == 4) |
f4347334 | 2246 | ts->kind = 4; |
203c7ebf | 2247 | if (flag_real8_kind == 10) |
f4347334 | 2248 | ts->kind = 10; |
203c7ebf | 2249 | if (flag_real8_kind == 16) |
f4347334 ZG |
2250 | ts->kind = 16; |
2251 | } | |
e45b3c75 | 2252 | } |
6de9cd9a | 2253 | |
e7a2d5fb | 2254 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a | 2255 | { |
e45b3c75 | 2256 | gfc_error ("Old-style type declaration %s*%d not supported at %C", |
636dff67 | 2257 | gfc_basic_typename (ts->type), original_kind); |
6de9cd9a DN |
2258 | return MATCH_ERROR; |
2259 | } | |
2260 | ||
524af0d6 JB |
2261 | if (!gfc_notify_std (GFC_STD_GNU, |
2262 | "Nonstandard type declaration %s*%d at %C", | |
2263 | gfc_basic_typename(ts->type), original_kind)) | |
df8652dc SK |
2264 | return MATCH_ERROR; |
2265 | ||
6de9cd9a DN |
2266 | return MATCH_YES; |
2267 | } | |
2268 | ||
2269 | ||
2270 | /* Match a kind specification. Since kinds are generally optional, we | |
2271 | usually return MATCH_NO if something goes wrong. If a "kind=" | |
2272 | string is found, then we know we have an error. */ | |
2273 | ||
2274 | match | |
e2d29968 | 2275 | gfc_match_kind_spec (gfc_typespec *ts, bool kind_expr_only) |
6de9cd9a | 2276 | { |
e2d29968 | 2277 | locus where, loc; |
6de9cd9a DN |
2278 | gfc_expr *e; |
2279 | match m, n; | |
96ee3a4a | 2280 | char c; |
6de9cd9a DN |
2281 | const char *msg; |
2282 | ||
2283 | m = MATCH_NO; | |
e2d29968 | 2284 | n = MATCH_YES; |
6de9cd9a DN |
2285 | e = NULL; |
2286 | ||
e2d29968 PT |
2287 | where = loc = gfc_current_locus; |
2288 | ||
2289 | if (kind_expr_only) | |
2290 | goto kind_expr; | |
6de9cd9a DN |
2291 | |
2292 | if (gfc_match_char ('(') == MATCH_NO) | |
2293 | return MATCH_NO; | |
2294 | ||
2295 | /* Also gobbles optional text. */ | |
2296 | if (gfc_match (" kind = ") == MATCH_YES) | |
2297 | m = MATCH_ERROR; | |
2298 | ||
e2d29968 PT |
2299 | loc = gfc_current_locus; |
2300 | ||
2301 | kind_expr: | |
6de9cd9a | 2302 | n = gfc_match_init_expr (&e); |
e2d29968 | 2303 | |
6de9cd9a | 2304 | if (n != MATCH_YES) |
e2d29968 | 2305 | { |
1c8bcdf7 | 2306 | if (gfc_matching_function) |
e2d29968 | 2307 | { |
f5acf0f2 | 2308 | /* The function kind expression might include use associated or |
1c8bcdf7 PT |
2309 | imported parameters and try again after the specification |
2310 | expressions..... */ | |
e2d29968 PT |
2311 | if (gfc_match_char (')') != MATCH_YES) |
2312 | { | |
2313 | gfc_error ("Missing right parenthesis at %C"); | |
2314 | m = MATCH_ERROR; | |
2315 | goto no_match; | |
2316 | } | |
2317 | ||
2318 | gfc_free_expr (e); | |
e2d29968 PT |
2319 | gfc_undo_symbols (); |
2320 | return MATCH_YES; | |
2321 | } | |
2322 | else | |
2323 | { | |
2324 | /* ....or else, the match is real. */ | |
2325 | if (n == MATCH_NO) | |
2326 | gfc_error ("Expected initialization expression at %C"); | |
2327 | if (n != MATCH_YES) | |
2328 | return MATCH_ERROR; | |
2329 | } | |
2330 | } | |
6de9cd9a DN |
2331 | |
2332 | if (e->rank != 0) | |
2333 | { | |
2334 | gfc_error ("Expected scalar initialization expression at %C"); | |
2335 | m = MATCH_ERROR; | |
2336 | goto no_match; | |
2337 | } | |
2338 | ||
2339 | msg = gfc_extract_int (e, &ts->kind); | |
1c8bcdf7 | 2340 | |
6de9cd9a DN |
2341 | if (msg != NULL) |
2342 | { | |
2343 | gfc_error (msg); | |
2344 | m = MATCH_ERROR; | |
2345 | goto no_match; | |
2346 | } | |
2347 | ||
a8b3b0b6 CR |
2348 | /* Before throwing away the expression, let's see if we had a |
2349 | C interoperable kind (and store the fact). */ | |
2350 | if (e->ts.is_c_interop == 1) | |
2351 | { | |
eea58adb | 2352 | /* Mark this as C interoperable if being declared with one |
a8b3b0b6 CR |
2353 | of the named constants from iso_c_binding. */ |
2354 | ts->is_c_interop = e->ts.is_iso_c; | |
2355 | ts->f90_type = e->ts.f90_type; | |
2356 | } | |
f5acf0f2 | 2357 | |
6de9cd9a DN |
2358 | gfc_free_expr (e); |
2359 | e = NULL; | |
2360 | ||
a8b3b0b6 CR |
2361 | /* Ignore errors to this point, if we've gotten here. This means |
2362 | we ignore the m=MATCH_ERROR from above. */ | |
e7a2d5fb | 2363 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a DN |
2364 | { |
2365 | gfc_error ("Kind %d not supported for type %s at %C", ts->kind, | |
2366 | gfc_basic_typename (ts->type)); | |
96ee3a4a TB |
2367 | gfc_current_locus = where; |
2368 | return MATCH_ERROR; | |
6de9cd9a | 2369 | } |
96ee3a4a | 2370 | |
2ec855f1 TB |
2371 | /* Warn if, e.g., c_int is used for a REAL variable, but not |
2372 | if, e.g., c_double is used for COMPLEX as the standard | |
2373 | explicitly says that the kind type parameter for complex and real | |
2374 | variable is the same, i.e. c_float == c_float_complex. */ | |
2375 | if (ts->f90_type != BT_UNKNOWN && ts->f90_type != ts->type | |
2376 | && !((ts->f90_type == BT_REAL && ts->type == BT_COMPLEX) | |
2377 | || (ts->f90_type == BT_COMPLEX && ts->type == BT_REAL))) | |
db30e21c | 2378 | gfc_warning_now (0, "C kind type parameter is for type %s but type at %L " |
2be51762 TB |
2379 | "is %s", gfc_basic_typename (ts->f90_type), &where, |
2380 | gfc_basic_typename (ts->type)); | |
2ec855f1 | 2381 | |
96ee3a4a | 2382 | gfc_gobble_whitespace (); |
8fc541d3 FXC |
2383 | if ((c = gfc_next_ascii_char ()) != ')' |
2384 | && (ts->type != BT_CHARACTER || c != ',')) | |
6de9cd9a | 2385 | { |
96ee3a4a TB |
2386 | if (ts->type == BT_CHARACTER) |
2387 | gfc_error ("Missing right parenthesis or comma at %C"); | |
2388 | else | |
2389 | gfc_error ("Missing right parenthesis at %C"); | |
e2d29968 | 2390 | m = MATCH_ERROR; |
6de9cd9a | 2391 | } |
a8b3b0b6 CR |
2392 | else |
2393 | /* All tests passed. */ | |
2394 | m = MATCH_YES; | |
6de9cd9a | 2395 | |
a8b3b0b6 CR |
2396 | if(m == MATCH_ERROR) |
2397 | gfc_current_locus = where; | |
f4347334 | 2398 | |
203c7ebf | 2399 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
f4347334 ZG |
2400 | ts->kind = 8; |
2401 | ||
2402 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2403 | { | |
2404 | if (ts->kind == 4) | |
2405 | { | |
203c7ebf | 2406 | if (flag_real4_kind == 8) |
f4347334 | 2407 | ts->kind = 8; |
203c7ebf | 2408 | if (flag_real4_kind == 10) |
f4347334 | 2409 | ts->kind = 10; |
203c7ebf | 2410 | if (flag_real4_kind == 16) |
f4347334 ZG |
2411 | ts->kind = 16; |
2412 | } | |
2413 | ||
2414 | if (ts->kind == 8) | |
2415 | { | |
203c7ebf | 2416 | if (flag_real8_kind == 4) |
f4347334 | 2417 | ts->kind = 4; |
203c7ebf | 2418 | if (flag_real8_kind == 10) |
f4347334 | 2419 | ts->kind = 10; |
203c7ebf | 2420 | if (flag_real8_kind == 16) |
f4347334 ZG |
2421 | ts->kind = 16; |
2422 | } | |
2423 | } | |
2424 | ||
a8b3b0b6 CR |
2425 | /* Return what we know from the test(s). */ |
2426 | return m; | |
6de9cd9a DN |
2427 | |
2428 | no_match: | |
2429 | gfc_free_expr (e); | |
63645982 | 2430 | gfc_current_locus = where; |
6de9cd9a DN |
2431 | return m; |
2432 | } | |
2433 | ||
2434 | ||
187de1ed FXC |
2435 | static match |
2436 | match_char_kind (int * kind, int * is_iso_c) | |
2437 | { | |
2438 | locus where; | |
2439 | gfc_expr *e; | |
2440 | match m, n; | |
2441 | const char *msg; | |
2442 | ||
2443 | m = MATCH_NO; | |
2444 | e = NULL; | |
2445 | where = gfc_current_locus; | |
2446 | ||
2447 | n = gfc_match_init_expr (&e); | |
96ee3a4a | 2448 | |
1c8bcdf7 | 2449 | if (n != MATCH_YES && gfc_matching_function) |
96ee3a4a | 2450 | { |
1c8bcdf7 | 2451 | /* The expression might include use-associated or imported |
f5acf0f2 | 2452 | parameters and try again after the specification |
1c8bcdf7 | 2453 | expressions. */ |
96ee3a4a | 2454 | gfc_free_expr (e); |
96ee3a4a TB |
2455 | gfc_undo_symbols (); |
2456 | return MATCH_YES; | |
2457 | } | |
2458 | ||
187de1ed FXC |
2459 | if (n == MATCH_NO) |
2460 | gfc_error ("Expected initialization expression at %C"); | |
2461 | if (n != MATCH_YES) | |
2462 | return MATCH_ERROR; | |
2463 | ||
2464 | if (e->rank != 0) | |
2465 | { | |
2466 | gfc_error ("Expected scalar initialization expression at %C"); | |
2467 | m = MATCH_ERROR; | |
2468 | goto no_match; | |
2469 | } | |
2470 | ||
2471 | msg = gfc_extract_int (e, kind); | |
2472 | *is_iso_c = e->ts.is_iso_c; | |
2473 | if (msg != NULL) | |
2474 | { | |
2475 | gfc_error (msg); | |
2476 | m = MATCH_ERROR; | |
2477 | goto no_match; | |
2478 | } | |
2479 | ||
2480 | gfc_free_expr (e); | |
2481 | ||
2482 | /* Ignore errors to this point, if we've gotten here. This means | |
2483 | we ignore the m=MATCH_ERROR from above. */ | |
2484 | if (gfc_validate_kind (BT_CHARACTER, *kind, true) < 0) | |
2485 | { | |
2486 | gfc_error ("Kind %d is not supported for CHARACTER at %C", *kind); | |
2487 | m = MATCH_ERROR; | |
2488 | } | |
2489 | else | |
2490 | /* All tests passed. */ | |
2491 | m = MATCH_YES; | |
2492 | ||
2493 | if (m == MATCH_ERROR) | |
2494 | gfc_current_locus = where; | |
f5acf0f2 | 2495 | |
187de1ed FXC |
2496 | /* Return what we know from the test(s). */ |
2497 | return m; | |
2498 | ||
2499 | no_match: | |
2500 | gfc_free_expr (e); | |
2501 | gfc_current_locus = where; | |
2502 | return m; | |
2503 | } | |
2504 | ||
8234e5e0 | 2505 | |
6de9cd9a DN |
2506 | /* Match the various kind/length specifications in a CHARACTER |
2507 | declaration. We don't return MATCH_NO. */ | |
2508 | ||
8234e5e0 SK |
2509 | match |
2510 | gfc_match_char_spec (gfc_typespec *ts) | |
6de9cd9a | 2511 | { |
187de1ed | 2512 | int kind, seen_length, is_iso_c; |
6de9cd9a DN |
2513 | gfc_charlen *cl; |
2514 | gfc_expr *len; | |
2515 | match m; | |
e69afb29 | 2516 | bool deferred; |
187de1ed | 2517 | |
6de9cd9a DN |
2518 | len = NULL; |
2519 | seen_length = 0; | |
187de1ed FXC |
2520 | kind = 0; |
2521 | is_iso_c = 0; | |
e69afb29 | 2522 | deferred = false; |
6de9cd9a DN |
2523 | |
2524 | /* Try the old-style specification first. */ | |
2525 | old_char_selector = 0; | |
2526 | ||
2767f2cc | 2527 | m = match_char_length (&len, &deferred, true); |
6de9cd9a DN |
2528 | if (m != MATCH_NO) |
2529 | { | |
2530 | if (m == MATCH_YES) | |
2531 | old_char_selector = 1; | |
2532 | seen_length = 1; | |
2533 | goto done; | |
2534 | } | |
2535 | ||
2536 | m = gfc_match_char ('('); | |
2537 | if (m != MATCH_YES) | |
2538 | { | |
a8b3b0b6 | 2539 | m = MATCH_YES; /* Character without length is a single char. */ |
6de9cd9a DN |
2540 | goto done; |
2541 | } | |
2542 | ||
a8b3b0b6 | 2543 | /* Try the weird case: ( KIND = <int> [ , LEN = <len-param> ] ). */ |
6de9cd9a DN |
2544 | if (gfc_match (" kind =") == MATCH_YES) |
2545 | { | |
187de1ed | 2546 | m = match_char_kind (&kind, &is_iso_c); |
f5acf0f2 | 2547 | |
6de9cd9a DN |
2548 | if (m == MATCH_ERROR) |
2549 | goto done; | |
2550 | if (m == MATCH_NO) | |
2551 | goto syntax; | |
2552 | ||
2553 | if (gfc_match (" , len =") == MATCH_NO) | |
2554 | goto rparen; | |
2555 | ||
e69afb29 | 2556 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
2557 | if (m == MATCH_NO) |
2558 | goto syntax; | |
2559 | if (m == MATCH_ERROR) | |
2560 | goto done; | |
2561 | seen_length = 1; | |
2562 | ||
2563 | goto rparen; | |
2564 | } | |
2565 | ||
66e4ab31 | 2566 | /* Try to match "LEN = <len-param>" or "LEN = <len-param>, KIND = <int>". */ |
6de9cd9a DN |
2567 | if (gfc_match (" len =") == MATCH_YES) |
2568 | { | |
e69afb29 | 2569 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
2570 | if (m == MATCH_NO) |
2571 | goto syntax; | |
2572 | if (m == MATCH_ERROR) | |
2573 | goto done; | |
2574 | seen_length = 1; | |
2575 | ||
2576 | if (gfc_match_char (')') == MATCH_YES) | |
2577 | goto done; | |
2578 | ||
2579 | if (gfc_match (" , kind =") != MATCH_YES) | |
2580 | goto syntax; | |
2581 | ||
187de1ed FXC |
2582 | if (match_char_kind (&kind, &is_iso_c) == MATCH_ERROR) |
2583 | goto done; | |
6de9cd9a DN |
2584 | |
2585 | goto rparen; | |
2586 | } | |
2587 | ||
66e4ab31 | 2588 | /* Try to match ( <len-param> ) or ( <len-param> , [ KIND = ] <int> ). */ |
e69afb29 | 2589 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
2590 | if (m == MATCH_NO) |
2591 | goto syntax; | |
2592 | if (m == MATCH_ERROR) | |
2593 | goto done; | |
2594 | seen_length = 1; | |
2595 | ||
2596 | m = gfc_match_char (')'); | |
2597 | if (m == MATCH_YES) | |
2598 | goto done; | |
2599 | ||
2600 | if (gfc_match_char (',') != MATCH_YES) | |
2601 | goto syntax; | |
2602 | ||
a8b3b0b6 | 2603 | gfc_match (" kind ="); /* Gobble optional text. */ |
6de9cd9a | 2604 | |
187de1ed | 2605 | m = match_char_kind (&kind, &is_iso_c); |
6de9cd9a DN |
2606 | if (m == MATCH_ERROR) |
2607 | goto done; | |
2608 | if (m == MATCH_NO) | |
2609 | goto syntax; | |
2610 | ||
2611 | rparen: | |
2612 | /* Require a right-paren at this point. */ | |
2613 | m = gfc_match_char (')'); | |
2614 | if (m == MATCH_YES) | |
2615 | goto done; | |
2616 | ||
2617 | syntax: | |
2618 | gfc_error ("Syntax error in CHARACTER declaration at %C"); | |
2619 | m = MATCH_ERROR; | |
16f8ffc8 JD |
2620 | gfc_free_expr (len); |
2621 | return m; | |
6de9cd9a DN |
2622 | |
2623 | done: | |
a99d95a2 PT |
2624 | /* Deal with character functions after USE and IMPORT statements. */ |
2625 | if (gfc_matching_function) | |
1c8bcdf7 | 2626 | { |
a99d95a2 | 2627 | gfc_free_expr (len); |
1c8bcdf7 PT |
2628 | gfc_undo_symbols (); |
2629 | return MATCH_YES; | |
2630 | } | |
2631 | ||
6de9cd9a DN |
2632 | if (m != MATCH_YES) |
2633 | { | |
2634 | gfc_free_expr (len); | |
2635 | return m; | |
2636 | } | |
2637 | ||
2638 | /* Do some final massaging of the length values. */ | |
b76e28c6 | 2639 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
2640 | |
2641 | if (seen_length == 0) | |
b7e75771 | 2642 | cl->length = gfc_get_int_expr (gfc_default_integer_kind, NULL, 1); |
6de9cd9a | 2643 | else |
5cd09fac | 2644 | cl->length = len; |
6de9cd9a | 2645 | |
bc21d315 | 2646 | ts->u.cl = cl; |
187de1ed | 2647 | ts->kind = kind == 0 ? gfc_default_character_kind : kind; |
e69afb29 | 2648 | ts->deferred = deferred; |
6de9cd9a | 2649 | |
eea58adb | 2650 | /* We have to know if it was a C interoperable kind so we can |
a8b3b0b6 | 2651 | do accurate type checking of bind(c) procs, etc. */ |
187de1ed | 2652 | if (kind != 0) |
eea58adb | 2653 | /* Mark this as C interoperable if being declared with one |
187de1ed FXC |
2654 | of the named constants from iso_c_binding. */ |
2655 | ts->is_c_interop = is_iso_c; | |
a8b3b0b6 | 2656 | else if (len != NULL) |
187de1ed FXC |
2657 | /* Here, we might have parsed something such as: character(c_char) |
2658 | In this case, the parsing code above grabs the c_char when | |
2659 | looking for the length (line 1690, roughly). it's the last | |
2660 | testcase for parsing the kind params of a character variable. | |
2661 | However, it's not actually the length. this seems like it | |
f5acf0f2 | 2662 | could be an error. |
187de1ed FXC |
2663 | To see if the user used a C interop kind, test the expr |
2664 | of the so called length, and see if it's C interoperable. */ | |
2665 | ts->is_c_interop = len->ts.is_iso_c; | |
f5acf0f2 | 2666 | |
6de9cd9a DN |
2667 | return MATCH_YES; |
2668 | } | |
2669 | ||
2670 | ||
e74f1cc8 JW |
2671 | /* Matches a declaration-type-spec (F03:R502). If successful, sets the ts |
2672 | structure to the matched specification. This is necessary for FUNCTION and | |
6de9cd9a DN |
2673 | IMPLICIT statements. |
2674 | ||
d51347f9 | 2675 | If implicit_flag is nonzero, then we don't check for the optional |
e5ddaa24 | 2676 | kind specification. Not doing so is needed for matching an IMPLICIT |
6de9cd9a DN |
2677 | statement correctly. */ |
2678 | ||
e2d29968 | 2679 | match |
e74f1cc8 | 2680 | gfc_match_decl_type_spec (gfc_typespec *ts, int implicit_flag) |
6de9cd9a DN |
2681 | { |
2682 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c3f34952 | 2683 | gfc_symbol *sym, *dt_sym; |
6de9cd9a | 2684 | match m; |
8fc541d3 | 2685 | char c; |
0fb56814 | 2686 | bool seen_deferred_kind, matched_type; |
c3f34952 | 2687 | const char *dt_name; |
6de9cd9a | 2688 | |
1c8bcdf7 PT |
2689 | /* A belt and braces check that the typespec is correctly being treated |
2690 | as a deferred characteristic association. */ | |
2691 | seen_deferred_kind = (gfc_current_state () == COMP_FUNCTION) | |
a99d95a2 PT |
2692 | && (gfc_current_block ()->result->ts.kind == -1) |
2693 | && (ts->kind == -1); | |
6de9cd9a | 2694 | gfc_clear_ts (ts); |
1c8bcdf7 PT |
2695 | if (seen_deferred_kind) |
2696 | ts->kind = -1; | |
6de9cd9a | 2697 | |
a8b3b0b6 | 2698 | /* Clear the current binding label, in case one is given. */ |
62603fae | 2699 | curr_binding_label = NULL; |
a8b3b0b6 | 2700 | |
5f700e6d AL |
2701 | if (gfc_match (" byte") == MATCH_YES) |
2702 | { | |
524af0d6 | 2703 | if (!gfc_notify_std (GFC_STD_GNU, "BYTE type at %C")) |
5f700e6d AL |
2704 | return MATCH_ERROR; |
2705 | ||
2706 | if (gfc_validate_kind (BT_INTEGER, 1, true) < 0) | |
2707 | { | |
2708 | gfc_error ("BYTE type used at %C " | |
2709 | "is not available on the target machine"); | |
2710 | return MATCH_ERROR; | |
2711 | } | |
d51347f9 | 2712 | |
5f700e6d AL |
2713 | ts->type = BT_INTEGER; |
2714 | ts->kind = 1; | |
2715 | return MATCH_YES; | |
2716 | } | |
2717 | ||
0fb56814 | 2718 | |
45a69325 | 2719 | m = gfc_match (" type ("); |
0fb56814 | 2720 | matched_type = (m == MATCH_YES); |
45a69325 TB |
2721 | if (matched_type) |
2722 | { | |
2723 | gfc_gobble_whitespace (); | |
2724 | if (gfc_peek_ascii_char () == '*') | |
2725 | { | |
2726 | if ((m = gfc_match ("*)")) != MATCH_YES) | |
2727 | return m; | |
2728 | if (gfc_current_state () == COMP_DERIVED) | |
2729 | { | |
2730 | gfc_error ("Assumed type at %C is not allowed for components"); | |
2731 | return MATCH_ERROR; | |
2732 | } | |
524af0d6 JB |
2733 | if (!gfc_notify_std (GFC_STD_F2008_TS, "Assumed type " |
2734 | "at %C")) | |
45a69325 TB |
2735 | return MATCH_ERROR; |
2736 | ts->type = BT_ASSUMED; | |
2737 | return MATCH_YES; | |
2738 | } | |
2739 | ||
2740 | m = gfc_match ("%n", name); | |
2741 | matched_type = (m == MATCH_YES); | |
2742 | } | |
2743 | ||
0fb56814 TB |
2744 | if ((matched_type && strcmp ("integer", name) == 0) |
2745 | || (!matched_type && gfc_match (" integer") == MATCH_YES)) | |
6de9cd9a DN |
2746 | { |
2747 | ts->type = BT_INTEGER; | |
9d64df18 | 2748 | ts->kind = gfc_default_integer_kind; |
6de9cd9a DN |
2749 | goto get_kind; |
2750 | } | |
2751 | ||
0fb56814 TB |
2752 | if ((matched_type && strcmp ("character", name) == 0) |
2753 | || (!matched_type && gfc_match (" character") == MATCH_YES)) | |
6de9cd9a | 2754 | { |
0fb56814 | 2755 | if (matched_type |
524af0d6 JB |
2756 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
2757 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
2758 | return MATCH_ERROR; |
2759 | ||
6de9cd9a | 2760 | ts->type = BT_CHARACTER; |
e5ddaa24 | 2761 | if (implicit_flag == 0) |
0fb56814 | 2762 | m = gfc_match_char_spec (ts); |
e5ddaa24 | 2763 | else |
0fb56814 TB |
2764 | m = MATCH_YES; |
2765 | ||
2766 | if (matched_type && m == MATCH_YES && gfc_match_char (')') != MATCH_YES) | |
2767 | m = MATCH_ERROR; | |
2768 | ||
2769 | return m; | |
6de9cd9a DN |
2770 | } |
2771 | ||
0fb56814 TB |
2772 | if ((matched_type && strcmp ("real", name) == 0) |
2773 | || (!matched_type && gfc_match (" real") == MATCH_YES)) | |
6de9cd9a DN |
2774 | { |
2775 | ts->type = BT_REAL; | |
9d64df18 | 2776 | ts->kind = gfc_default_real_kind; |
6de9cd9a DN |
2777 | goto get_kind; |
2778 | } | |
2779 | ||
0fb56814 TB |
2780 | if ((matched_type |
2781 | && (strcmp ("doubleprecision", name) == 0 | |
2782 | || (strcmp ("double", name) == 0 | |
2783 | && gfc_match (" precision") == MATCH_YES))) | |
2784 | || (!matched_type && gfc_match (" double precision") == MATCH_YES)) | |
6de9cd9a | 2785 | { |
0fb56814 | 2786 | if (matched_type |
524af0d6 JB |
2787 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
2788 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
2789 | return MATCH_ERROR; |
2790 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
2791 | return MATCH_ERROR; | |
2792 | ||
6de9cd9a | 2793 | ts->type = BT_REAL; |
9d64df18 | 2794 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
2795 | return MATCH_YES; |
2796 | } | |
2797 | ||
0fb56814 TB |
2798 | if ((matched_type && strcmp ("complex", name) == 0) |
2799 | || (!matched_type && gfc_match (" complex") == MATCH_YES)) | |
6de9cd9a DN |
2800 | { |
2801 | ts->type = BT_COMPLEX; | |
9d64df18 | 2802 | ts->kind = gfc_default_complex_kind; |
6de9cd9a DN |
2803 | goto get_kind; |
2804 | } | |
2805 | ||
0fb56814 TB |
2806 | if ((matched_type |
2807 | && (strcmp ("doublecomplex", name) == 0 | |
2808 | || (strcmp ("double", name) == 0 | |
2809 | && gfc_match (" complex") == MATCH_YES))) | |
2810 | || (!matched_type && gfc_match (" double complex") == MATCH_YES)) | |
6de9cd9a | 2811 | { |
524af0d6 | 2812 | if (!gfc_notify_std (GFC_STD_GNU, "DOUBLE COMPLEX at %C")) |
0fb56814 TB |
2813 | return MATCH_ERROR; |
2814 | ||
2815 | if (matched_type | |
524af0d6 JB |
2816 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
2817 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
2818 | return MATCH_ERROR; |
2819 | ||
2820 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
df8652dc SK |
2821 | return MATCH_ERROR; |
2822 | ||
6de9cd9a | 2823 | ts->type = BT_COMPLEX; |
9d64df18 | 2824 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
2825 | return MATCH_YES; |
2826 | } | |
2827 | ||
0fb56814 TB |
2828 | if ((matched_type && strcmp ("logical", name) == 0) |
2829 | || (!matched_type && gfc_match (" logical") == MATCH_YES)) | |
6de9cd9a DN |
2830 | { |
2831 | ts->type = BT_LOGICAL; | |
9d64df18 | 2832 | ts->kind = gfc_default_logical_kind; |
6de9cd9a DN |
2833 | goto get_kind; |
2834 | } | |
2835 | ||
0fb56814 TB |
2836 | if (matched_type) |
2837 | m = gfc_match_char (')'); | |
2838 | ||
cf2b3c22 TB |
2839 | if (m == MATCH_YES) |
2840 | ts->type = BT_DERIVED; | |
2841 | else | |
727e8544 | 2842 | { |
528622fd JW |
2843 | /* Match CLASS declarations. */ |
2844 | m = gfc_match (" class ( * )"); | |
2845 | if (m == MATCH_ERROR) | |
2846 | return MATCH_ERROR; | |
2847 | else if (m == MATCH_YES) | |
2848 | { | |
8b704316 PT |
2849 | gfc_symbol *upe; |
2850 | gfc_symtree *st; | |
2851 | ts->type = BT_CLASS; | |
f5acf0f2 | 2852 | gfc_find_symbol ("STAR", gfc_current_ns, 1, &upe); |
8b704316 PT |
2853 | if (upe == NULL) |
2854 | { | |
f5acf0f2 PT |
2855 | upe = gfc_new_symbol ("STAR", gfc_current_ns); |
2856 | st = gfc_new_symtree (&gfc_current_ns->sym_root, "STAR"); | |
8b704316 PT |
2857 | st->n.sym = upe; |
2858 | gfc_set_sym_referenced (upe); | |
2859 | upe->refs++; | |
2860 | upe->ts.type = BT_VOID; | |
2861 | upe->attr.unlimited_polymorphic = 1; | |
2862 | /* This is essential to force the construction of | |
2863 | unlimited polymorphic component class containers. */ | |
2864 | upe->attr.zero_comp = 1; | |
524af0d6 JB |
2865 | if (!gfc_add_flavor (&upe->attr, FL_DERIVED, NULL, |
2866 | &gfc_current_locus)) | |
528622fd JW |
2867 | return MATCH_ERROR; |
2868 | } | |
8b704316 PT |
2869 | else |
2870 | { | |
f5acf0f2 | 2871 | st = gfc_find_symtree (gfc_current_ns->sym_root, "STAR"); |
8b704316 | 2872 | if (st == NULL) |
f5acf0f2 | 2873 | st = gfc_new_symtree (&gfc_current_ns->sym_root, "STAR"); |
8b704316 PT |
2874 | st->n.sym = upe; |
2875 | upe->refs++; | |
2876 | } | |
2877 | ts->u.derived = upe; | |
2878 | return m; | |
2879 | } | |
528622fd | 2880 | |
727e8544 JW |
2881 | m = gfc_match (" class ( %n )", name); |
2882 | if (m != MATCH_YES) | |
2883 | return m; | |
cf2b3c22 | 2884 | ts->type = BT_CLASS; |
727e8544 | 2885 | |
524af0d6 | 2886 | if (!gfc_notify_std (GFC_STD_F2003, "CLASS statement at %C")) |
e74f1cc8 | 2887 | return MATCH_ERROR; |
727e8544 | 2888 | } |
6de9cd9a | 2889 | |
1c8bcdf7 PT |
2890 | /* Defer association of the derived type until the end of the |
2891 | specification block. However, if the derived type can be | |
f5acf0f2 | 2892 | found, add it to the typespec. */ |
1c8bcdf7 | 2893 | if (gfc_matching_function) |
e2d29968 | 2894 | { |
bc21d315 | 2895 | ts->u.derived = NULL; |
1c8bcdf7 PT |
2896 | if (gfc_current_state () != COMP_INTERFACE |
2897 | && !gfc_find_symbol (name, NULL, 1, &sym) && sym) | |
c3f34952 TB |
2898 | { |
2899 | sym = gfc_find_dt_in_generic (sym); | |
2900 | ts->u.derived = sym; | |
2901 | } | |
e2d29968 PT |
2902 | return MATCH_YES; |
2903 | } | |
2904 | ||
2905 | /* Search for the name but allow the components to be defined later. If | |
2906 | type = -1, this typespec has been seen in a function declaration but | |
c3f34952 | 2907 | the type could not be accessed at that point. The actual derived type is |
eea58adb | 2908 | stored in a symtree with the first letter of the name capitalized; the |
c3f34952 TB |
2909 | symtree with the all lower-case name contains the associated |
2910 | generic function. */ | |
2911 | dt_name = gfc_get_string ("%c%s", | |
2912 | (char) TOUPPER ((unsigned char) name[0]), | |
2913 | (const char*)&name[1]); | |
1c8bcdf7 | 2914 | sym = NULL; |
c3f34952 TB |
2915 | dt_sym = NULL; |
2916 | if (ts->kind != -1) | |
6de9cd9a | 2917 | { |
c3f34952 TB |
2918 | gfc_get_ha_symbol (name, &sym); |
2919 | if (sym->generic && gfc_find_symbol (dt_name, NULL, 0, &dt_sym)) | |
2920 | { | |
c4100eae | 2921 | gfc_error ("Type name %qs at %C is ambiguous", name); |
c3f34952 TB |
2922 | return MATCH_ERROR; |
2923 | } | |
2924 | if (sym->generic && !dt_sym) | |
2925 | dt_sym = gfc_find_dt_in_generic (sym); | |
6de9cd9a | 2926 | } |
e2d29968 PT |
2927 | else if (ts->kind == -1) |
2928 | { | |
1c8bcdf7 PT |
2929 | int iface = gfc_state_stack->previous->state != COMP_INTERFACE |
2930 | || gfc_current_ns->has_import_set; | |
c3f34952 TB |
2931 | gfc_find_symbol (name, NULL, iface, &sym); |
2932 | if (sym && sym->generic && gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
f5acf0f2 | 2933 | { |
c4100eae | 2934 | gfc_error ("Type name %qs at %C is ambiguous", name); |
e2d29968 PT |
2935 | return MATCH_ERROR; |
2936 | } | |
c3f34952 TB |
2937 | if (sym && sym->generic && !dt_sym) |
2938 | dt_sym = gfc_find_dt_in_generic (sym); | |
e2d29968 | 2939 | |
1c8bcdf7 | 2940 | ts->kind = 0; |
e2d29968 PT |
2941 | if (sym == NULL) |
2942 | return MATCH_NO; | |
2943 | } | |
6de9cd9a | 2944 | |
c3f34952 TB |
2945 | if ((sym->attr.flavor != FL_UNKNOWN |
2946 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.generic)) | |
2947 | || sym->attr.subroutine) | |
2948 | { | |
fea70c99 MLI |
2949 | gfc_error ("Type name %qs at %C conflicts with previously declared " |
2950 | "entity at %L, which has the same name", name, | |
2951 | &sym->declared_at); | |
c3f34952 TB |
2952 | return MATCH_ERROR; |
2953 | } | |
6de9cd9a | 2954 | |
44c57c2f | 2955 | gfc_save_symbol_data (sym); |
1c8bcdf7 | 2956 | gfc_set_sym_referenced (sym); |
c3f34952 | 2957 | if (!sym->attr.generic |
524af0d6 | 2958 | && !gfc_add_generic (&sym->attr, sym->name, NULL)) |
c3f34952 TB |
2959 | return MATCH_ERROR; |
2960 | ||
2961 | if (!sym->attr.function | |
524af0d6 | 2962 | && !gfc_add_function (&sym->attr, sym->name, NULL)) |
c3f34952 TB |
2963 | return MATCH_ERROR; |
2964 | ||
2965 | if (!dt_sym) | |
2966 | { | |
2967 | gfc_interface *intr, *head; | |
2968 | ||
2969 | /* Use upper case to save the actual derived-type symbol. */ | |
2970 | gfc_get_symbol (dt_name, NULL, &dt_sym); | |
2971 | dt_sym->name = gfc_get_string (sym->name); | |
2972 | head = sym->generic; | |
2973 | intr = gfc_get_interface (); | |
2974 | intr->sym = dt_sym; | |
2975 | intr->where = gfc_current_locus; | |
2976 | intr->next = head; | |
2977 | sym->generic = intr; | |
2978 | sym->attr.if_source = IFSRC_DECL; | |
2979 | } | |
44c57c2f MM |
2980 | else |
2981 | gfc_save_symbol_data (dt_sym); | |
c3f34952 TB |
2982 | |
2983 | gfc_set_sym_referenced (dt_sym); | |
2984 | ||
2985 | if (dt_sym->attr.flavor != FL_DERIVED | |
524af0d6 | 2986 | && !gfc_add_flavor (&dt_sym->attr, FL_DERIVED, sym->name, NULL)) |
c3f34952 TB |
2987 | return MATCH_ERROR; |
2988 | ||
2989 | ts->u.derived = dt_sym; | |
6de9cd9a DN |
2990 | |
2991 | return MATCH_YES; | |
2992 | ||
2993 | get_kind: | |
0fb56814 | 2994 | if (matched_type |
524af0d6 JB |
2995 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
2996 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
2997 | return MATCH_ERROR; |
2998 | ||
6de9cd9a DN |
2999 | /* For all types except double, derived and character, look for an |
3000 | optional kind specifier. MATCH_NO is actually OK at this point. */ | |
e5ddaa24 | 3001 | if (implicit_flag == 1) |
0fb56814 TB |
3002 | { |
3003 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
3004 | return MATCH_ERROR; | |
3005 | ||
3006 | return MATCH_YES; | |
3007 | } | |
6de9cd9a | 3008 | |
0ff0dfbf TS |
3009 | if (gfc_current_form == FORM_FREE) |
3010 | { | |
0b3624f6 SK |
3011 | c = gfc_peek_ascii_char (); |
3012 | if (!gfc_is_whitespace (c) && c != '*' && c != '(' | |
636dff67 | 3013 | && c != ':' && c != ',') |
0fb56814 TB |
3014 | { |
3015 | if (matched_type && c == ')') | |
3016 | { | |
3017 | gfc_next_ascii_char (); | |
3018 | return MATCH_YES; | |
3019 | } | |
3020 | return MATCH_NO; | |
3021 | } | |
0ff0dfbf TS |
3022 | } |
3023 | ||
e2d29968 | 3024 | m = gfc_match_kind_spec (ts, false); |
6de9cd9a | 3025 | if (m == MATCH_NO && ts->type != BT_CHARACTER) |
4381322d SK |
3026 | { |
3027 | m = gfc_match_old_kind_spec (ts); | |
3028 | if (gfc_validate_kind (ts->type, ts->kind, true) == -1) | |
3029 | return MATCH_ERROR; | |
3030 | } | |
6de9cd9a | 3031 | |
0fb56814 TB |
3032 | if (matched_type && gfc_match_char (')') != MATCH_YES) |
3033 | return MATCH_ERROR; | |
3034 | ||
1c8bcdf7 PT |
3035 | /* Defer association of the KIND expression of function results |
3036 | until after USE and IMPORT statements. */ | |
3037 | if ((gfc_current_state () == COMP_NONE && gfc_error_flag_test ()) | |
3038 | || gfc_matching_function) | |
3039 | return MATCH_YES; | |
3040 | ||
6de9cd9a DN |
3041 | if (m == MATCH_NO) |
3042 | m = MATCH_YES; /* No kind specifier found. */ | |
3043 | ||
3044 | return m; | |
3045 | } | |
3046 | ||
3047 | ||
e5ddaa24 TS |
3048 | /* Match an IMPLICIT NONE statement. Actually, this statement is |
3049 | already matched in parse.c, or we would not end up here in the | |
3050 | first place. So the only thing we need to check, is if there is | |
3051 | trailing garbage. If not, the match is successful. */ | |
3052 | ||
3053 | match | |
3054 | gfc_match_implicit_none (void) | |
3055 | { | |
8b7a967e TB |
3056 | char c; |
3057 | match m; | |
3058 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
3059 | bool type = false; | |
3060 | bool external = false; | |
a6c63173 TB |
3061 | locus cur_loc = gfc_current_locus; |
3062 | ||
3063 | if (gfc_current_ns->seen_implicit_none | |
3064 | || gfc_current_ns->has_implicit_none_export) | |
3065 | { | |
3066 | gfc_error ("Duplicate IMPLICIT NONE statement at %C"); | |
3067 | return MATCH_ERROR; | |
3068 | } | |
8b7a967e TB |
3069 | |
3070 | gfc_gobble_whitespace (); | |
3071 | c = gfc_peek_ascii_char (); | |
3072 | if (c == '(') | |
3073 | { | |
3074 | (void) gfc_next_ascii_char (); | |
3075 | if (!gfc_notify_std (GFC_STD_F2015, "IMPORT NONE with spec list at %C")) | |
3076 | return MATCH_ERROR; | |
a6c63173 TB |
3077 | |
3078 | gfc_gobble_whitespace (); | |
3079 | if (gfc_peek_ascii_char () == ')') | |
8b7a967e | 3080 | { |
a6c63173 TB |
3081 | (void) gfc_next_ascii_char (); |
3082 | type = true; | |
3083 | } | |
3084 | else | |
3085 | for(;;) | |
3086 | { | |
3087 | m = gfc_match (" %n", name); | |
3088 | if (m != MATCH_YES) | |
3089 | return MATCH_ERROR; | |
8b7a967e | 3090 | |
a6c63173 TB |
3091 | if (strcmp (name, "type") == 0) |
3092 | type = true; | |
3093 | else if (strcmp (name, "external") == 0) | |
3094 | external = true; | |
3095 | else | |
3096 | return MATCH_ERROR; | |
8b7a967e | 3097 | |
a6c63173 TB |
3098 | gfc_gobble_whitespace (); |
3099 | c = gfc_next_ascii_char (); | |
3100 | if (c == ',') | |
3101 | continue; | |
3102 | if (c == ')') | |
3103 | break; | |
3104 | return MATCH_ERROR; | |
3105 | } | |
8b7a967e TB |
3106 | } |
3107 | else | |
3108 | type = true; | |
3109 | ||
3110 | if (gfc_match_eos () != MATCH_YES) | |
3111 | return MATCH_ERROR; | |
3112 | ||
a6c63173 | 3113 | gfc_set_implicit_none (type, external, &cur_loc); |
8b7a967e TB |
3114 | |
3115 | return MATCH_YES; | |
e5ddaa24 TS |
3116 | } |
3117 | ||
3118 | ||
3119 | /* Match the letter range(s) of an IMPLICIT statement. */ | |
3120 | ||
3121 | static match | |
1107b970 | 3122 | match_implicit_range (void) |
e5ddaa24 | 3123 | { |
8fc541d3 FXC |
3124 | char c, c1, c2; |
3125 | int inner; | |
e5ddaa24 TS |
3126 | locus cur_loc; |
3127 | ||
3128 | cur_loc = gfc_current_locus; | |
3129 | ||
3130 | gfc_gobble_whitespace (); | |
8fc541d3 | 3131 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
3132 | if (c != '(') |
3133 | { | |
3134 | gfc_error ("Missing character range in IMPLICIT at %C"); | |
3135 | goto bad; | |
3136 | } | |
3137 | ||
3138 | inner = 1; | |
3139 | while (inner) | |
3140 | { | |
3141 | gfc_gobble_whitespace (); | |
8fc541d3 | 3142 | c1 = gfc_next_ascii_char (); |
e5ddaa24 TS |
3143 | if (!ISALPHA (c1)) |
3144 | goto bad; | |
3145 | ||
3146 | gfc_gobble_whitespace (); | |
8fc541d3 | 3147 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
3148 | |
3149 | switch (c) | |
3150 | { | |
3151 | case ')': | |
66e4ab31 | 3152 | inner = 0; /* Fall through. */ |
e5ddaa24 TS |
3153 | |
3154 | case ',': | |
3155 | c2 = c1; | |
3156 | break; | |
3157 | ||
3158 | case '-': | |
3159 | gfc_gobble_whitespace (); | |
8fc541d3 | 3160 | c2 = gfc_next_ascii_char (); |
e5ddaa24 TS |
3161 | if (!ISALPHA (c2)) |
3162 | goto bad; | |
3163 | ||
3164 | gfc_gobble_whitespace (); | |
8fc541d3 | 3165 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
3166 | |
3167 | if ((c != ',') && (c != ')')) | |
3168 | goto bad; | |
3169 | if (c == ')') | |
3170 | inner = 0; | |
3171 | ||
3172 | break; | |
3173 | ||
3174 | default: | |
3175 | goto bad; | |
3176 | } | |
3177 | ||
3178 | if (c1 > c2) | |
3179 | { | |
3180 | gfc_error ("Letters must be in alphabetic order in " | |
3181 | "IMPLICIT statement at %C"); | |
3182 | goto bad; | |
3183 | } | |
3184 | ||
3185 | /* See if we can add the newly matched range to the pending | |
636dff67 SK |
3186 | implicits from this IMPLICIT statement. We do not check for |
3187 | conflicts with whatever earlier IMPLICIT statements may have | |
3188 | set. This is done when we've successfully finished matching | |
3189 | the current one. */ | |
524af0d6 | 3190 | if (!gfc_add_new_implicit_range (c1, c2)) |
e5ddaa24 TS |
3191 | goto bad; |
3192 | } | |
3193 | ||
3194 | return MATCH_YES; | |
3195 | ||
3196 | bad: | |
3197 | gfc_syntax_error (ST_IMPLICIT); | |
3198 | ||
3199 | gfc_current_locus = cur_loc; | |
3200 | return MATCH_ERROR; | |
3201 | } | |
3202 | ||
3203 | ||
3204 | /* Match an IMPLICIT statement, storing the types for | |
3205 | gfc_set_implicit() if the statement is accepted by the parser. | |
3206 | There is a strange looking, but legal syntactic construction | |
3207 | possible. It looks like: | |
3208 | ||
3209 | IMPLICIT INTEGER (a-b) (c-d) | |
3210 | ||
3211 | This is legal if "a-b" is a constant expression that happens to | |
3212 | equal one of the legal kinds for integers. The real problem | |
3213 | happens with an implicit specification that looks like: | |
3214 | ||
3215 | IMPLICIT INTEGER (a-b) | |
3216 | ||
3217 | In this case, a typespec matcher that is "greedy" (as most of the | |
3218 | matchers are) gobbles the character range as a kindspec, leaving | |
3219 | nothing left. We therefore have to go a bit more slowly in the | |
3220 | matching process by inhibiting the kindspec checking during | |
3221 | typespec matching and checking for a kind later. */ | |
3222 | ||
3223 | match | |
3224 | gfc_match_implicit (void) | |
3225 | { | |
3226 | gfc_typespec ts; | |
3227 | locus cur_loc; | |
8fc541d3 | 3228 | char c; |
e5ddaa24 TS |
3229 | match m; |
3230 | ||
8b7a967e TB |
3231 | if (gfc_current_ns->seen_implicit_none) |
3232 | { | |
3233 | gfc_error ("IMPLICIT statement at %C following an IMPLICIT NONE (type) " | |
3234 | "statement"); | |
3235 | return MATCH_ERROR; | |
3236 | } | |
3237 | ||
44000dbb JD |
3238 | gfc_clear_ts (&ts); |
3239 | ||
e5ddaa24 TS |
3240 | /* We don't allow empty implicit statements. */ |
3241 | if (gfc_match_eos () == MATCH_YES) | |
3242 | { | |
3243 | gfc_error ("Empty IMPLICIT statement at %C"); | |
3244 | return MATCH_ERROR; | |
3245 | } | |
3246 | ||
e5ddaa24 TS |
3247 | do |
3248 | { | |
1107b970 PB |
3249 | /* First cleanup. */ |
3250 | gfc_clear_new_implicit (); | |
3251 | ||
e5ddaa24 | 3252 | /* A basic type is mandatory here. */ |
e74f1cc8 | 3253 | m = gfc_match_decl_type_spec (&ts, 1); |
e5ddaa24 TS |
3254 | if (m == MATCH_ERROR) |
3255 | goto error; | |
3256 | if (m == MATCH_NO) | |
3257 | goto syntax; | |
3258 | ||
3259 | cur_loc = gfc_current_locus; | |
1107b970 | 3260 | m = match_implicit_range (); |
e5ddaa24 TS |
3261 | |
3262 | if (m == MATCH_YES) | |
3263 | { | |
1107b970 | 3264 | /* We may have <TYPE> (<RANGE>). */ |
e5ddaa24 | 3265 | gfc_gobble_whitespace (); |
a6c63173 TB |
3266 | c = gfc_peek_ascii_char (); |
3267 | if (c == ',' || c == '\n' || c == ';' || c == '!') | |
1107b970 PB |
3268 | { |
3269 | /* Check for CHARACTER with no length parameter. */ | |
bc21d315 | 3270 | if (ts.type == BT_CHARACTER && !ts.u.cl) |
1107b970 | 3271 | { |
9d64df18 | 3272 | ts.kind = gfc_default_character_kind; |
b76e28c6 | 3273 | ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
b7e75771 JD |
3274 | ts.u.cl->length = gfc_get_int_expr (gfc_default_integer_kind, |
3275 | NULL, 1); | |
1107b970 PB |
3276 | } |
3277 | ||
3278 | /* Record the Successful match. */ | |
524af0d6 | 3279 | if (!gfc_merge_new_implicit (&ts)) |
1107b970 | 3280 | return MATCH_ERROR; |
a6c63173 TB |
3281 | if (c == ',') |
3282 | c = gfc_next_ascii_char (); | |
3283 | else if (gfc_match_eos () == MATCH_ERROR) | |
3284 | goto error; | |
1107b970 PB |
3285 | continue; |
3286 | } | |
e5ddaa24 TS |
3287 | |
3288 | gfc_current_locus = cur_loc; | |
3289 | } | |
3290 | ||
1107b970 PB |
3291 | /* Discard the (incorrectly) matched range. */ |
3292 | gfc_clear_new_implicit (); | |
3293 | ||
3294 | /* Last chance -- check <TYPE> <SELECTOR> (<RANGE>). */ | |
3295 | if (ts.type == BT_CHARACTER) | |
8234e5e0 | 3296 | m = gfc_match_char_spec (&ts); |
1107b970 | 3297 | else |
e5ddaa24 | 3298 | { |
e2d29968 | 3299 | m = gfc_match_kind_spec (&ts, false); |
e5ddaa24 | 3300 | if (m == MATCH_NO) |
1107b970 PB |
3301 | { |
3302 | m = gfc_match_old_kind_spec (&ts); | |
3303 | if (m == MATCH_ERROR) | |
3304 | goto error; | |
3305 | if (m == MATCH_NO) | |
3306 | goto syntax; | |
3307 | } | |
e5ddaa24 | 3308 | } |
1107b970 PB |
3309 | if (m == MATCH_ERROR) |
3310 | goto error; | |
e5ddaa24 | 3311 | |
1107b970 | 3312 | m = match_implicit_range (); |
e5ddaa24 TS |
3313 | if (m == MATCH_ERROR) |
3314 | goto error; | |
3315 | if (m == MATCH_NO) | |
3316 | goto syntax; | |
3317 | ||
3318 | gfc_gobble_whitespace (); | |
8fc541d3 | 3319 | c = gfc_next_ascii_char (); |
a6c63173 | 3320 | if (c != ',' && gfc_match_eos () != MATCH_YES) |
e5ddaa24 TS |
3321 | goto syntax; |
3322 | ||
524af0d6 | 3323 | if (!gfc_merge_new_implicit (&ts)) |
1107b970 | 3324 | return MATCH_ERROR; |
e5ddaa24 TS |
3325 | } |
3326 | while (c == ','); | |
3327 | ||
1107b970 | 3328 | return MATCH_YES; |
e5ddaa24 TS |
3329 | |
3330 | syntax: | |
3331 | gfc_syntax_error (ST_IMPLICIT); | |
3332 | ||
3333 | error: | |
3334 | return MATCH_ERROR; | |
3335 | } | |
3336 | ||
66e4ab31 | 3337 | |
8998be20 TB |
3338 | match |
3339 | gfc_match_import (void) | |
3340 | { | |
3341 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
3342 | match m; | |
3343 | gfc_symbol *sym; | |
3344 | gfc_symtree *st; | |
3345 | ||
66e4ab31 SK |
3346 | if (gfc_current_ns->proc_name == NULL |
3347 | || gfc_current_ns->proc_name->attr.if_source != IFSRC_IFBODY) | |
8998be20 TB |
3348 | { |
3349 | gfc_error ("IMPORT statement at %C only permitted in " | |
3350 | "an INTERFACE body"); | |
3351 | return MATCH_ERROR; | |
3352 | } | |
3353 | ||
4668d6f9 PT |
3354 | if (gfc_current_ns->proc_name->attr.module_procedure) |
3355 | { | |
3356 | gfc_error ("F2008: C1210 IMPORT statement at %C is not permitted " | |
3357 | "in a module procedure interface body"); | |
3358 | return MATCH_ERROR; | |
3359 | } | |
3360 | ||
524af0d6 | 3361 | if (!gfc_notify_std (GFC_STD_F2003, "IMPORT statement at %C")) |
8998be20 TB |
3362 | return MATCH_ERROR; |
3363 | ||
3364 | if (gfc_match_eos () == MATCH_YES) | |
3365 | { | |
3366 | /* All host variables should be imported. */ | |
3367 | gfc_current_ns->has_import_set = 1; | |
3368 | return MATCH_YES; | |
3369 | } | |
3370 | ||
3371 | if (gfc_match (" ::") == MATCH_YES) | |
3372 | { | |
3373 | if (gfc_match_eos () == MATCH_YES) | |
636dff67 SK |
3374 | { |
3375 | gfc_error ("Expecting list of named entities at %C"); | |
3376 | return MATCH_ERROR; | |
3377 | } | |
8998be20 TB |
3378 | } |
3379 | ||
3380 | for(;;) | |
3381 | { | |
2e8d9212 | 3382 | sym = NULL; |
8998be20 TB |
3383 | m = gfc_match (" %n", name); |
3384 | switch (m) | |
3385 | { | |
3386 | case MATCH_YES: | |
36d3fb4c | 3387 | if (gfc_current_ns->parent != NULL |
66e4ab31 | 3388 | && gfc_find_symbol (name, gfc_current_ns->parent, 1, &sym)) |
36d3fb4c | 3389 | { |
c4100eae | 3390 | gfc_error ("Type name %qs at %C is ambiguous", name); |
36d3fb4c PT |
3391 | return MATCH_ERROR; |
3392 | } | |
4e2cf5f5 | 3393 | else if (!sym && gfc_current_ns->proc_name->ns->parent != NULL |
66e4ab31 SK |
3394 | && gfc_find_symbol (name, |
3395 | gfc_current_ns->proc_name->ns->parent, | |
3396 | 1, &sym)) | |
636dff67 | 3397 | { |
c4100eae | 3398 | gfc_error ("Type name %qs at %C is ambiguous", name); |
636dff67 SK |
3399 | return MATCH_ERROR; |
3400 | } | |
3401 | ||
3402 | if (sym == NULL) | |
3403 | { | |
c4100eae | 3404 | gfc_error ("Cannot IMPORT %qs from host scoping unit " |
636dff67 SK |
3405 | "at %C - does not exist.", name); |
3406 | return MATCH_ERROR; | |
3407 | } | |
3408 | ||
dd8b9dde | 3409 | if (gfc_find_symtree (gfc_current_ns->sym_root, name)) |
636dff67 | 3410 | { |
db30e21c | 3411 | gfc_warning (0, "%qs is already IMPORTed from host scoping unit " |
48749dbc | 3412 | "at %C", name); |
636dff67 SK |
3413 | goto next_item; |
3414 | } | |
3415 | ||
dd8b9dde | 3416 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); |
636dff67 SK |
3417 | st->n.sym = sym; |
3418 | sym->refs++; | |
5a8af0b4 | 3419 | sym->attr.imported = 1; |
8998be20 | 3420 | |
c3f34952 TB |
3421 | if (sym->attr.generic && (sym = gfc_find_dt_in_generic (sym))) |
3422 | { | |
3423 | /* The actual derived type is stored in a symtree with the first | |
eea58adb | 3424 | letter of the name capitalized; the symtree with the all |
1cc0e193 | 3425 | lower-case name contains the associated generic function. */ |
c3f34952 TB |
3426 | st = gfc_new_symtree (&gfc_current_ns->sym_root, |
3427 | gfc_get_string ("%c%s", | |
dd8b9dde TB |
3428 | (char) TOUPPER ((unsigned char) name[0]), |
3429 | &name[1])); | |
c3f34952 TB |
3430 | st->n.sym = sym; |
3431 | sym->refs++; | |
3432 | sym->attr.imported = 1; | |
3433 | } | |
3434 | ||
8998be20 TB |
3435 | goto next_item; |
3436 | ||
3437 | case MATCH_NO: | |
3438 | break; | |
3439 | ||
3440 | case MATCH_ERROR: | |
3441 | return MATCH_ERROR; | |
3442 | } | |
3443 | ||
3444 | next_item: | |
3445 | if (gfc_match_eos () == MATCH_YES) | |
3446 | break; | |
3447 | if (gfc_match_char (',') != MATCH_YES) | |
3448 | goto syntax; | |
3449 | } | |
3450 | ||
3451 | return MATCH_YES; | |
3452 | ||
3453 | syntax: | |
3454 | gfc_error ("Syntax error in IMPORT statement at %C"); | |
3455 | return MATCH_ERROR; | |
3456 | } | |
e5ddaa24 | 3457 | |
66e4ab31 | 3458 | |
f2449db4 RS |
3459 | /* A minimal implementation of gfc_match without whitespace, escape |
3460 | characters or variable arguments. Returns true if the next | |
3461 | characters match the TARGET template exactly. */ | |
3462 | ||
3463 | static bool | |
3464 | match_string_p (const char *target) | |
3465 | { | |
3466 | const char *p; | |
3467 | ||
3468 | for (p = target; *p; p++) | |
8fc541d3 | 3469 | if ((char) gfc_next_ascii_char () != *p) |
f2449db4 RS |
3470 | return false; |
3471 | return true; | |
3472 | } | |
3473 | ||
6de9cd9a DN |
3474 | /* Matches an attribute specification including array specs. If |
3475 | successful, leaves the variables current_attr and current_as | |
3476 | holding the specification. Also sets the colon_seen variable for | |
3477 | later use by matchers associated with initializations. | |
3478 | ||
3479 | This subroutine is a little tricky in the sense that we don't know | |
3480 | if we really have an attr-spec until we hit the double colon. | |
3481 | Until that time, we can only return MATCH_NO. This forces us to | |
3482 | check for duplicate specification at this level. */ | |
3483 | ||
3484 | static match | |
3485 | match_attr_spec (void) | |
3486 | { | |
6de9cd9a | 3487 | /* Modifiers that can exist in a type statement. */ |
d75d9546 | 3488 | enum |
6de9cd9a DN |
3489 | { GFC_DECL_BEGIN = 0, |
3490 | DECL_ALLOCATABLE = GFC_DECL_BEGIN, DECL_DIMENSION, DECL_EXTERNAL, | |
3491 | DECL_IN, DECL_OUT, DECL_INOUT, DECL_INTRINSIC, DECL_OPTIONAL, | |
ee7e677f TB |
3492 | DECL_PARAMETER, DECL_POINTER, DECL_PROTECTED, DECL_PRIVATE, |
3493 | DECL_PUBLIC, DECL_SAVE, DECL_TARGET, DECL_VALUE, DECL_VOLATILE, | |
fe4e525c TB |
3494 | DECL_IS_BIND_C, DECL_CODIMENSION, DECL_ASYNCHRONOUS, DECL_CONTIGUOUS, |
3495 | DECL_NONE, GFC_DECL_END /* Sentinel */ | |
d75d9546 | 3496 | }; |
6de9cd9a DN |
3497 | |
3498 | /* GFC_DECL_END is the sentinel, index starts at 0. */ | |
3499 | #define NUM_DECL GFC_DECL_END | |
3500 | ||
6de9cd9a DN |
3501 | locus start, seen_at[NUM_DECL]; |
3502 | int seen[NUM_DECL]; | |
09639a83 | 3503 | unsigned int d; |
6de9cd9a DN |
3504 | const char *attr; |
3505 | match m; | |
524af0d6 | 3506 | bool t; |
6de9cd9a DN |
3507 | |
3508 | gfc_clear_attr (¤t_attr); | |
63645982 | 3509 | start = gfc_current_locus; |
6de9cd9a DN |
3510 | |
3511 | current_as = NULL; | |
3512 | colon_seen = 0; | |
3513 | ||
3514 | /* See if we get all of the keywords up to the final double colon. */ | |
3515 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3516 | seen[d] = 0; | |
3517 | ||
3518 | for (;;) | |
3519 | { | |
8fc541d3 | 3520 | char ch; |
a8b3b0b6 | 3521 | |
f2449db4 RS |
3522 | d = DECL_NONE; |
3523 | gfc_gobble_whitespace (); | |
3524 | ||
8fc541d3 | 3525 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
3526 | if (ch == ':') |
3527 | { | |
3528 | /* This is the successful exit condition for the loop. */ | |
8fc541d3 | 3529 | if (gfc_next_ascii_char () == ':') |
f2449db4 RS |
3530 | break; |
3531 | } | |
3532 | else if (ch == ',') | |
a8b3b0b6 | 3533 | { |
a8b3b0b6 | 3534 | gfc_gobble_whitespace (); |
8fc541d3 | 3535 | switch (gfc_peek_ascii_char ()) |
a8b3b0b6 | 3536 | { |
f2449db4 | 3537 | case 'a': |
1eee5628 TB |
3538 | gfc_next_ascii_char (); |
3539 | switch (gfc_next_ascii_char ()) | |
3540 | { | |
3541 | case 'l': | |
3542 | if (match_string_p ("locatable")) | |
3543 | { | |
3544 | /* Matched "allocatable". */ | |
3545 | d = DECL_ALLOCATABLE; | |
3546 | } | |
3547 | break; | |
3548 | ||
3549 | case 's': | |
3550 | if (match_string_p ("ynchronous")) | |
3551 | { | |
3552 | /* Matched "asynchronous". */ | |
3553 | d = DECL_ASYNCHRONOUS; | |
3554 | } | |
3555 | break; | |
3556 | } | |
fe4e525c | 3557 | break; |
f2449db4 RS |
3558 | |
3559 | case 'b': | |
a8b3b0b6 | 3560 | /* Try and match the bind(c). */ |
1eabf70a | 3561 | m = gfc_match_bind_c (NULL, true); |
129d15a3 | 3562 | if (m == MATCH_YES) |
a8b3b0b6 | 3563 | d = DECL_IS_BIND_C; |
129d15a3 JW |
3564 | else if (m == MATCH_ERROR) |
3565 | goto cleanup; | |
f2449db4 RS |
3566 | break; |
3567 | ||
be59db2d | 3568 | case 'c': |
fe4e525c TB |
3569 | gfc_next_ascii_char (); |
3570 | if ('o' != gfc_next_ascii_char ()) | |
3571 | break; | |
3572 | switch (gfc_next_ascii_char ()) | |
3573 | { | |
3574 | case 'd': | |
3575 | if (match_string_p ("imension")) | |
3576 | { | |
3577 | d = DECL_CODIMENSION; | |
3578 | break; | |
3579 | } | |
3580 | case 'n': | |
3581 | if (match_string_p ("tiguous")) | |
3582 | { | |
3583 | d = DECL_CONTIGUOUS; | |
3584 | break; | |
3585 | } | |
3586 | } | |
be59db2d TB |
3587 | break; |
3588 | ||
f2449db4 RS |
3589 | case 'd': |
3590 | if (match_string_p ("dimension")) | |
3591 | d = DECL_DIMENSION; | |
3592 | break; | |
3593 | ||
3594 | case 'e': | |
3595 | if (match_string_p ("external")) | |
3596 | d = DECL_EXTERNAL; | |
3597 | break; | |
3598 | ||
3599 | case 'i': | |
3600 | if (match_string_p ("int")) | |
3601 | { | |
8fc541d3 | 3602 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
3603 | if (ch == 'e') |
3604 | { | |
3605 | if (match_string_p ("nt")) | |
3606 | { | |
3607 | /* Matched "intent". */ | |
3608 | /* TODO: Call match_intent_spec from here. */ | |
3609 | if (gfc_match (" ( in out )") == MATCH_YES) | |
3610 | d = DECL_INOUT; | |
3611 | else if (gfc_match (" ( in )") == MATCH_YES) | |
3612 | d = DECL_IN; | |
3613 | else if (gfc_match (" ( out )") == MATCH_YES) | |
3614 | d = DECL_OUT; | |
3615 | } | |
3616 | } | |
3617 | else if (ch == 'r') | |
3618 | { | |
3619 | if (match_string_p ("insic")) | |
3620 | { | |
3621 | /* Matched "intrinsic". */ | |
3622 | d = DECL_INTRINSIC; | |
3623 | } | |
3624 | } | |
3625 | } | |
3626 | break; | |
3627 | ||
3628 | case 'o': | |
3629 | if (match_string_p ("optional")) | |
3630 | d = DECL_OPTIONAL; | |
3631 | break; | |
3632 | ||
3633 | case 'p': | |
8fc541d3 FXC |
3634 | gfc_next_ascii_char (); |
3635 | switch (gfc_next_ascii_char ()) | |
f2449db4 RS |
3636 | { |
3637 | case 'a': | |
3638 | if (match_string_p ("rameter")) | |
3639 | { | |
3640 | /* Matched "parameter". */ | |
3641 | d = DECL_PARAMETER; | |
3642 | } | |
3643 | break; | |
3644 | ||
3645 | case 'o': | |
3646 | if (match_string_p ("inter")) | |
3647 | { | |
3648 | /* Matched "pointer". */ | |
3649 | d = DECL_POINTER; | |
3650 | } | |
3651 | break; | |
3652 | ||
3653 | case 'r': | |
8fc541d3 | 3654 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
3655 | if (ch == 'i') |
3656 | { | |
3657 | if (match_string_p ("vate")) | |
3658 | { | |
3659 | /* Matched "private". */ | |
3660 | d = DECL_PRIVATE; | |
3661 | } | |
3662 | } | |
3663 | else if (ch == 'o') | |
3664 | { | |
3665 | if (match_string_p ("tected")) | |
3666 | { | |
3667 | /* Matched "protected". */ | |
3668 | d = DECL_PROTECTED; | |
3669 | } | |
3670 | } | |
3671 | break; | |
3672 | ||
3673 | case 'u': | |
3674 | if (match_string_p ("blic")) | |
3675 | { | |
3676 | /* Matched "public". */ | |
3677 | d = DECL_PUBLIC; | |
3678 | } | |
3679 | break; | |
3680 | } | |
3681 | break; | |
3682 | ||
3683 | case 's': | |
3684 | if (match_string_p ("save")) | |
3685 | d = DECL_SAVE; | |
3686 | break; | |
3687 | ||
3688 | case 't': | |
3689 | if (match_string_p ("target")) | |
3690 | d = DECL_TARGET; | |
3691 | break; | |
3692 | ||
3693 | case 'v': | |
8fc541d3 FXC |
3694 | gfc_next_ascii_char (); |
3695 | ch = gfc_next_ascii_char (); | |
f2449db4 RS |
3696 | if (ch == 'a') |
3697 | { | |
3698 | if (match_string_p ("lue")) | |
3699 | { | |
3700 | /* Matched "value". */ | |
3701 | d = DECL_VALUE; | |
3702 | } | |
3703 | } | |
3704 | else if (ch == 'o') | |
3705 | { | |
3706 | if (match_string_p ("latile")) | |
3707 | { | |
3708 | /* Matched "volatile". */ | |
3709 | d = DECL_VOLATILE; | |
3710 | } | |
3711 | } | |
3712 | break; | |
a8b3b0b6 CR |
3713 | } |
3714 | } | |
d468bcdb | 3715 | |
f2449db4 RS |
3716 | /* No double colon and no recognizable decl_type, so assume that |
3717 | we've been looking at something else the whole time. */ | |
3718 | if (d == DECL_NONE) | |
3719 | { | |
3720 | m = MATCH_NO; | |
3721 | goto cleanup; | |
3722 | } | |
d51347f9 | 3723 | |
acb388a0 JD |
3724 | /* Check to make sure any parens are paired up correctly. */ |
3725 | if (gfc_match_parens () == MATCH_ERROR) | |
3726 | { | |
3727 | m = MATCH_ERROR; | |
3728 | goto cleanup; | |
3729 | } | |
3730 | ||
6de9cd9a | 3731 | seen[d]++; |
63645982 | 3732 | seen_at[d] = gfc_current_locus; |
6de9cd9a | 3733 | |
d3a9eea2 | 3734 | if (d == DECL_DIMENSION || d == DECL_CODIMENSION) |
6de9cd9a | 3735 | { |
d3a9eea2 | 3736 | gfc_array_spec *as = NULL; |
6de9cd9a | 3737 | |
d3a9eea2 TB |
3738 | m = gfc_match_array_spec (&as, d == DECL_DIMENSION, |
3739 | d == DECL_CODIMENSION); | |
3740 | ||
3741 | if (current_as == NULL) | |
3742 | current_as = as; | |
3743 | else if (m == MATCH_YES) | |
6de9cd9a | 3744 | { |
524af0d6 | 3745 | if (!merge_array_spec (as, current_as, false)) |
63fbf586 | 3746 | m = MATCH_ERROR; |
cede9502 | 3747 | free (as); |
6de9cd9a DN |
3748 | } |
3749 | ||
be59db2d TB |
3750 | if (m == MATCH_NO) |
3751 | { | |
d3a9eea2 TB |
3752 | if (d == DECL_CODIMENSION) |
3753 | gfc_error ("Missing codimension specification at %C"); | |
3754 | else | |
3755 | gfc_error ("Missing dimension specification at %C"); | |
be59db2d TB |
3756 | m = MATCH_ERROR; |
3757 | } | |
3758 | ||
3759 | if (m == MATCH_ERROR) | |
3760 | goto cleanup; | |
3761 | } | |
6de9cd9a DN |
3762 | } |
3763 | ||
6de9cd9a DN |
3764 | /* Since we've seen a double colon, we have to be looking at an |
3765 | attr-spec. This means that we can now issue errors. */ | |
3766 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3767 | if (seen[d] > 1) | |
3768 | { | |
3769 | switch (d) | |
3770 | { | |
3771 | case DECL_ALLOCATABLE: | |
3772 | attr = "ALLOCATABLE"; | |
3773 | break; | |
1eee5628 TB |
3774 | case DECL_ASYNCHRONOUS: |
3775 | attr = "ASYNCHRONOUS"; | |
3776 | break; | |
be59db2d TB |
3777 | case DECL_CODIMENSION: |
3778 | attr = "CODIMENSION"; | |
3779 | break; | |
fe4e525c TB |
3780 | case DECL_CONTIGUOUS: |
3781 | attr = "CONTIGUOUS"; | |
3782 | break; | |
6de9cd9a DN |
3783 | case DECL_DIMENSION: |
3784 | attr = "DIMENSION"; | |
3785 | break; | |
3786 | case DECL_EXTERNAL: | |
3787 | attr = "EXTERNAL"; | |
3788 | break; | |
3789 | case DECL_IN: | |
3790 | attr = "INTENT (IN)"; | |
3791 | break; | |
3792 | case DECL_OUT: | |
3793 | attr = "INTENT (OUT)"; | |
3794 | break; | |
3795 | case DECL_INOUT: | |
3796 | attr = "INTENT (IN OUT)"; | |
3797 | break; | |
3798 | case DECL_INTRINSIC: | |
3799 | attr = "INTRINSIC"; | |
3800 | break; | |
3801 | case DECL_OPTIONAL: | |
3802 | attr = "OPTIONAL"; | |
3803 | break; | |
3804 | case DECL_PARAMETER: | |
3805 | attr = "PARAMETER"; | |
3806 | break; | |
3807 | case DECL_POINTER: | |
3808 | attr = "POINTER"; | |
3809 | break; | |
ee7e677f TB |
3810 | case DECL_PROTECTED: |
3811 | attr = "PROTECTED"; | |
3812 | break; | |
6de9cd9a DN |
3813 | case DECL_PRIVATE: |
3814 | attr = "PRIVATE"; | |
3815 | break; | |
3816 | case DECL_PUBLIC: | |
3817 | attr = "PUBLIC"; | |
3818 | break; | |
3819 | case DECL_SAVE: | |
3820 | attr = "SAVE"; | |
3821 | break; | |
3822 | case DECL_TARGET: | |
3823 | attr = "TARGET"; | |
3824 | break; | |
a8b3b0b6 CR |
3825 | case DECL_IS_BIND_C: |
3826 | attr = "IS_BIND_C"; | |
3827 | break; | |
3828 | case DECL_VALUE: | |
3829 | attr = "VALUE"; | |
3830 | break; | |
775e6c3a TB |
3831 | case DECL_VOLATILE: |
3832 | attr = "VOLATILE"; | |
3833 | break; | |
6de9cd9a | 3834 | default: |
66e4ab31 | 3835 | attr = NULL; /* This shouldn't happen. */ |
6de9cd9a DN |
3836 | } |
3837 | ||
3838 | gfc_error ("Duplicate %s attribute at %L", attr, &seen_at[d]); | |
3839 | m = MATCH_ERROR; | |
3840 | goto cleanup; | |
3841 | } | |
3842 | ||
3843 | /* Now that we've dealt with duplicate attributes, add the attributes | |
3844 | to the current attribute. */ | |
3845 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3846 | { | |
3847 | if (seen[d] == 0) | |
3848 | continue; | |
3849 | ||
3850 | if (gfc_current_state () == COMP_DERIVED | |
be59db2d TB |
3851 | && d != DECL_DIMENSION && d != DECL_CODIMENSION |
3852 | && d != DECL_POINTER && d != DECL_PRIVATE | |
fe4e525c | 3853 | && d != DECL_PUBLIC && d != DECL_CONTIGUOUS && d != DECL_NONE) |
6de9cd9a | 3854 | { |
5046aff5 PT |
3855 | if (d == DECL_ALLOCATABLE) |
3856 | { | |
524af0d6 JB |
3857 | if (!gfc_notify_std (GFC_STD_F2003, "ALLOCATABLE " |
3858 | "attribute at %C in a TYPE definition")) | |
5046aff5 PT |
3859 | { |
3860 | m = MATCH_ERROR; | |
3861 | goto cleanup; | |
3862 | } | |
636dff67 SK |
3863 | } |
3864 | else | |
5046aff5 PT |
3865 | { |
3866 | gfc_error ("Attribute at %L is not allowed in a TYPE definition", | |
d51347f9 | 3867 | &seen_at[d]); |
5046aff5 PT |
3868 | m = MATCH_ERROR; |
3869 | goto cleanup; | |
3870 | } | |
6de9cd9a DN |
3871 | } |
3872 | ||
4213f93b | 3873 | if ((d == DECL_PRIVATE || d == DECL_PUBLIC) |
636dff67 | 3874 | && gfc_current_state () != COMP_MODULE) |
4213f93b PT |
3875 | { |
3876 | if (d == DECL_PRIVATE) | |
3877 | attr = "PRIVATE"; | |
3878 | else | |
3879 | attr = "PUBLIC"; | |
d51347f9 TB |
3880 | if (gfc_current_state () == COMP_DERIVED |
3881 | && gfc_state_stack->previous | |
3882 | && gfc_state_stack->previous->state == COMP_MODULE) | |
3883 | { | |
524af0d6 JB |
3884 | if (!gfc_notify_std (GFC_STD_F2003, "Attribute %s " |
3885 | "at %L in a TYPE definition", attr, | |
3886 | &seen_at[d])) | |
d51347f9 TB |
3887 | { |
3888 | m = MATCH_ERROR; | |
3889 | goto cleanup; | |
3890 | } | |
3891 | } | |
3892 | else | |
3893 | { | |
3894 | gfc_error ("%s attribute at %L is not allowed outside of the " | |
3895 | "specification part of a module", attr, &seen_at[d]); | |
3896 | m = MATCH_ERROR; | |
3897 | goto cleanup; | |
3898 | } | |
4213f93b PT |
3899 | } |
3900 | ||
6de9cd9a DN |
3901 | switch (d) |
3902 | { | |
3903 | case DECL_ALLOCATABLE: | |
3904 | t = gfc_add_allocatable (¤t_attr, &seen_at[d]); | |
3905 | break; | |
3906 | ||
1eee5628 | 3907 | case DECL_ASYNCHRONOUS: |
524af0d6 JB |
3908 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS attribute at %C")) |
3909 | t = false; | |
1eee5628 TB |
3910 | else |
3911 | t = gfc_add_asynchronous (¤t_attr, NULL, &seen_at[d]); | |
3912 | break; | |
3913 | ||
be59db2d TB |
3914 | case DECL_CODIMENSION: |
3915 | t = gfc_add_codimension (¤t_attr, NULL, &seen_at[d]); | |
3916 | break; | |
3917 | ||
fe4e525c | 3918 | case DECL_CONTIGUOUS: |
524af0d6 JB |
3919 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS attribute at %C")) |
3920 | t = false; | |
fe4e525c TB |
3921 | else |
3922 | t = gfc_add_contiguous (¤t_attr, NULL, &seen_at[d]); | |
3923 | break; | |
3924 | ||
6de9cd9a | 3925 | case DECL_DIMENSION: |
231b2fcc | 3926 | t = gfc_add_dimension (¤t_attr, NULL, &seen_at[d]); |
6de9cd9a DN |
3927 | break; |
3928 | ||
3929 | case DECL_EXTERNAL: | |
3930 | t = gfc_add_external (¤t_attr, &seen_at[d]); | |
3931 | break; | |
3932 | ||
3933 | case DECL_IN: | |
3934 | t = gfc_add_intent (¤t_attr, INTENT_IN, &seen_at[d]); | |
3935 | break; | |
3936 | ||
3937 | case DECL_OUT: | |
3938 | t = gfc_add_intent (¤t_attr, INTENT_OUT, &seen_at[d]); | |
3939 | break; | |
3940 | ||
3941 | case DECL_INOUT: | |
3942 | t = gfc_add_intent (¤t_attr, INTENT_INOUT, &seen_at[d]); | |
3943 | break; | |
3944 | ||
3945 | case DECL_INTRINSIC: | |
3946 | t = gfc_add_intrinsic (¤t_attr, &seen_at[d]); | |
3947 | break; | |
3948 | ||
3949 | case DECL_OPTIONAL: | |
3950 | t = gfc_add_optional (¤t_attr, &seen_at[d]); | |
3951 | break; | |
3952 | ||
3953 | case DECL_PARAMETER: | |
231b2fcc | 3954 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, &seen_at[d]); |
6de9cd9a DN |
3955 | break; |
3956 | ||
3957 | case DECL_POINTER: | |
3958 | t = gfc_add_pointer (¤t_attr, &seen_at[d]); | |
3959 | break; | |
3960 | ||
ee7e677f TB |
3961 | case DECL_PROTECTED: |
3962 | if (gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
3963 | { | |
3964 | gfc_error ("PROTECTED at %C only allowed in specification " | |
3965 | "part of a module"); | |
524af0d6 | 3966 | t = false; |
ee7e677f TB |
3967 | break; |
3968 | } | |
3969 | ||
524af0d6 JB |
3970 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED attribute at %C")) |
3971 | t = false; | |
ee7e677f TB |
3972 | else |
3973 | t = gfc_add_protected (¤t_attr, NULL, &seen_at[d]); | |
3974 | break; | |
3975 | ||
6de9cd9a | 3976 | case DECL_PRIVATE: |
231b2fcc TS |
3977 | t = gfc_add_access (¤t_attr, ACCESS_PRIVATE, NULL, |
3978 | &seen_at[d]); | |
6de9cd9a DN |
3979 | break; |
3980 | ||
3981 | case DECL_PUBLIC: | |
231b2fcc TS |
3982 | t = gfc_add_access (¤t_attr, ACCESS_PUBLIC, NULL, |
3983 | &seen_at[d]); | |
6de9cd9a DN |
3984 | break; |
3985 | ||
3986 | case DECL_SAVE: | |
80f95228 | 3987 | t = gfc_add_save (¤t_attr, SAVE_EXPLICIT, NULL, &seen_at[d]); |
6de9cd9a DN |
3988 | break; |
3989 | ||
3990 | case DECL_TARGET: | |
3991 | t = gfc_add_target (¤t_attr, &seen_at[d]); | |
3992 | break; | |
3993 | ||
a8b3b0b6 CR |
3994 | case DECL_IS_BIND_C: |
3995 | t = gfc_add_is_bind_c(¤t_attr, NULL, &seen_at[d], 0); | |
3996 | break; | |
f5acf0f2 | 3997 | |
06469efd | 3998 | case DECL_VALUE: |
524af0d6 JB |
3999 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE attribute at %C")) |
4000 | t = false; | |
06469efd PT |
4001 | else |
4002 | t = gfc_add_value (¤t_attr, NULL, &seen_at[d]); | |
4003 | break; | |
4004 | ||
775e6c3a | 4005 | case DECL_VOLATILE: |
524af0d6 JB |
4006 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE attribute at %C")) |
4007 | t = false; | |
775e6c3a TB |
4008 | else |
4009 | t = gfc_add_volatile (¤t_attr, NULL, &seen_at[d]); | |
4010 | break; | |
4011 | ||
6de9cd9a DN |
4012 | default: |
4013 | gfc_internal_error ("match_attr_spec(): Bad attribute"); | |
4014 | } | |
4015 | ||
524af0d6 | 4016 | if (!t) |
6de9cd9a DN |
4017 | { |
4018 | m = MATCH_ERROR; | |
4019 | goto cleanup; | |
4020 | } | |
4021 | } | |
4022 | ||
dab2cbf8 | 4023 | /* Since Fortran 2008 module variables implicitly have the SAVE attribute. */ |
4668d6f9 PT |
4024 | if ((gfc_current_state () == COMP_MODULE |
4025 | || gfc_current_state () == COMP_SUBMODULE) | |
4026 | && !current_attr.save | |
dab2cbf8 | 4027 | && (gfc_option.allow_std & GFC_STD_F2008) != 0) |
80f95228 JW |
4028 | current_attr.save = SAVE_IMPLICIT; |
4029 | ||
6de9cd9a DN |
4030 | colon_seen = 1; |
4031 | return MATCH_YES; | |
4032 | ||
4033 | cleanup: | |
63645982 | 4034 | gfc_current_locus = start; |
6de9cd9a DN |
4035 | gfc_free_array_spec (current_as); |
4036 | current_as = NULL; | |
4037 | return m; | |
4038 | } | |
4039 | ||
4040 | ||
a8b3b0b6 CR |
4041 | /* Set the binding label, dest_label, either with the binding label |
4042 | stored in the given gfc_typespec, ts, or if none was provided, it | |
4043 | will be the symbol name in all lower case, as required by the draft | |
4044 | (J3/04-007, section 15.4.1). If a binding label was given and | |
4045 | there is more than one argument (num_idents), it is an error. */ | |
4046 | ||
524af0d6 | 4047 | static bool |
f5acf0f2 | 4048 | set_binding_label (const char **dest_label, const char *sym_name, |
9975a30b | 4049 | int num_idents) |
a8b3b0b6 | 4050 | { |
ad4a2f64 | 4051 | if (num_idents > 1 && has_name_equals) |
a8b3b0b6 | 4052 | { |
ad4a2f64 TB |
4053 | gfc_error ("Multiple identifiers provided with " |
4054 | "single NAME= specifier at %C"); | |
524af0d6 | 4055 | return false; |
ad4a2f64 | 4056 | } |
a8b3b0b6 | 4057 | |
62603fae | 4058 | if (curr_binding_label) |
eea58adb | 4059 | /* Binding label given; store in temp holder till have sym. */ |
62603fae | 4060 | *dest_label = curr_binding_label; |
a8b3b0b6 CR |
4061 | else |
4062 | { | |
4063 | /* No binding label given, and the NAME= specifier did not exist, | |
4064 | which means there was no NAME="". */ | |
4065 | if (sym_name != NULL && has_name_equals == 0) | |
62603fae | 4066 | *dest_label = IDENTIFIER_POINTER (get_identifier (sym_name)); |
a8b3b0b6 | 4067 | } |
f5acf0f2 | 4068 | |
524af0d6 | 4069 | return true; |
a8b3b0b6 CR |
4070 | } |
4071 | ||
4072 | ||
4073 | /* Set the status of the given common block as being BIND(C) or not, | |
4074 | depending on the given parameter, is_bind_c. */ | |
4075 | ||
4076 | void | |
4077 | set_com_block_bind_c (gfc_common_head *com_block, int is_bind_c) | |
4078 | { | |
4079 | com_block->is_bind_c = is_bind_c; | |
4080 | return; | |
4081 | } | |
4082 | ||
4083 | ||
4084 | /* Verify that the given gfc_typespec is for a C interoperable type. */ | |
4085 | ||
524af0d6 | 4086 | bool |
00820a2a | 4087 | gfc_verify_c_interop (gfc_typespec *ts) |
a8b3b0b6 | 4088 | { |
bc21d315 | 4089 | if (ts->type == BT_DERIVED && ts->u.derived != NULL) |
ba3721c1 | 4090 | return (ts->u.derived->ts.is_c_interop || ts->u.derived->attr.is_bind_c) |
524af0d6 | 4091 | ? true : false; |
00820a2a | 4092 | else if (ts->type == BT_CLASS) |
524af0d6 | 4093 | return false; |
45a69325 | 4094 | else if (ts->is_c_interop != 1 && ts->type != BT_ASSUMED) |
524af0d6 | 4095 | return false; |
45a69325 | 4096 | |
524af0d6 | 4097 | return true; |
a8b3b0b6 CR |
4098 | } |
4099 | ||
4100 | ||
4101 | /* Verify that the variables of a given common block, which has been | |
4102 | defined with the attribute specifier bind(c), to be of a C | |
4103 | interoperable type. Errors will be reported here, if | |
4104 | encountered. */ | |
4105 | ||
524af0d6 | 4106 | bool |
a8b3b0b6 CR |
4107 | verify_com_block_vars_c_interop (gfc_common_head *com_block) |
4108 | { | |
4109 | gfc_symbol *curr_sym = NULL; | |
524af0d6 | 4110 | bool retval = true; |
a8b3b0b6 CR |
4111 | |
4112 | curr_sym = com_block->head; | |
f5acf0f2 | 4113 | |
a8b3b0b6 CR |
4114 | /* Make sure we have at least one symbol. */ |
4115 | if (curr_sym == NULL) | |
4116 | return retval; | |
4117 | ||
4118 | /* Here we know we have a symbol, so we'll execute this loop | |
4119 | at least once. */ | |
4120 | do | |
4121 | { | |
4122 | /* The second to last param, 1, says this is in a common block. */ | |
4123 | retval = verify_bind_c_sym (curr_sym, &(curr_sym->ts), 1, com_block); | |
4124 | curr_sym = curr_sym->common_next; | |
f5acf0f2 | 4125 | } while (curr_sym != NULL); |
a8b3b0b6 CR |
4126 | |
4127 | return retval; | |
4128 | } | |
4129 | ||
4130 | ||
4131 | /* Verify that a given BIND(C) symbol is C interoperable. If it is not, | |
4132 | an appropriate error message is reported. */ | |
4133 | ||
524af0d6 | 4134 | bool |
a8b3b0b6 CR |
4135 | verify_bind_c_sym (gfc_symbol *tmp_sym, gfc_typespec *ts, |
4136 | int is_in_common, gfc_common_head *com_block) | |
4137 | { | |
8327f9c2 | 4138 | bool bind_c_function = false; |
524af0d6 | 4139 | bool retval = true; |
d8fa96e0 | 4140 | |
8327f9c2 TB |
4141 | if (tmp_sym->attr.function && tmp_sym->attr.is_bind_c) |
4142 | bind_c_function = true; | |
4143 | ||
d8fa96e0 CR |
4144 | if (tmp_sym->attr.function && tmp_sym->result != NULL) |
4145 | { | |
4146 | tmp_sym = tmp_sym->result; | |
4147 | /* Make sure it wasn't an implicitly typed result. */ | |
4daa149b | 4148 | if (tmp_sym->attr.implicit_type && warn_c_binding_type) |
d8fa96e0 | 4149 | { |
48749dbc MLI |
4150 | gfc_warning (OPT_Wc_binding_type, |
4151 | "Implicitly declared BIND(C) function %qs at " | |
d8fa96e0 CR |
4152 | "%L may not be C interoperable", tmp_sym->name, |
4153 | &tmp_sym->declared_at); | |
4154 | tmp_sym->ts.f90_type = tmp_sym->ts.type; | |
4155 | /* Mark it as C interoperable to prevent duplicate warnings. */ | |
4156 | tmp_sym->ts.is_c_interop = 1; | |
4157 | tmp_sym->attr.is_c_interop = 1; | |
4158 | } | |
4159 | } | |
8327f9c2 | 4160 | |
a8b3b0b6 CR |
4161 | /* Here, we know we have the bind(c) attribute, so if we have |
4162 | enough type info, then verify that it's a C interop kind. | |
4163 | The info could be in the symbol already, or possibly still in | |
4164 | the given ts (current_ts), so look in both. */ | |
f5acf0f2 | 4165 | if (tmp_sym->ts.type != BT_UNKNOWN || ts->type != BT_UNKNOWN) |
a8b3b0b6 | 4166 | { |
524af0d6 | 4167 | if (!gfc_verify_c_interop (&(tmp_sym->ts))) |
a8b3b0b6 CR |
4168 | { |
4169 | /* See if we're dealing with a sym in a common block or not. */ | |
4daa149b | 4170 | if (is_in_common == 1 && warn_c_binding_type) |
a8b3b0b6 | 4171 | { |
48749dbc MLI |
4172 | gfc_warning (OPT_Wc_binding_type, |
4173 | "Variable %qs in common block %qs at %L " | |
a8b3b0b6 | 4174 | "may not be a C interoperable " |
48749dbc | 4175 | "kind though common block %qs is BIND(C)", |
a8b3b0b6 CR |
4176 | tmp_sym->name, com_block->name, |
4177 | &(tmp_sym->declared_at), com_block->name); | |
4178 | } | |
4179 | else | |
4180 | { | |
4181 | if (tmp_sym->ts.type == BT_DERIVED || ts->type == BT_DERIVED) | |
c4100eae | 4182 | gfc_error ("Type declaration %qs at %L is not C " |
a8b3b0b6 CR |
4183 | "interoperable but it is BIND(C)", |
4184 | tmp_sym->name, &(tmp_sym->declared_at)); | |
4daa149b | 4185 | else if (warn_c_binding_type) |
48749dbc | 4186 | gfc_warning (OPT_Wc_binding_type, "Variable %qs at %L " |
a8b3b0b6 | 4187 | "may not be a C interoperable " |
c4100eae | 4188 | "kind but it is BIND(C)", |
a8b3b0b6 CR |
4189 | tmp_sym->name, &(tmp_sym->declared_at)); |
4190 | } | |
4191 | } | |
f5acf0f2 | 4192 | |
a8b3b0b6 CR |
4193 | /* Variables declared w/in a common block can't be bind(c) |
4194 | since there's no way for C to see these variables, so there's | |
4195 | semantically no reason for the attribute. */ | |
4196 | if (is_in_common == 1 && tmp_sym->attr.is_bind_c == 1) | |
4197 | { | |
c4100eae | 4198 | gfc_error ("Variable %qs in common block %qs at " |
a8b3b0b6 CR |
4199 | "%L cannot be declared with BIND(C) " |
4200 | "since it is not a global", | |
4201 | tmp_sym->name, com_block->name, | |
4202 | &(tmp_sym->declared_at)); | |
524af0d6 | 4203 | retval = false; |
a8b3b0b6 | 4204 | } |
f5acf0f2 | 4205 | |
a8b3b0b6 CR |
4206 | /* Scalar variables that are bind(c) can not have the pointer |
4207 | or allocatable attributes. */ | |
4208 | if (tmp_sym->attr.is_bind_c == 1) | |
4209 | { | |
4210 | if (tmp_sym->attr.pointer == 1) | |
4211 | { | |
c4100eae | 4212 | gfc_error ("Variable %qs at %L cannot have both the " |
a8b3b0b6 CR |
4213 | "POINTER and BIND(C) attributes", |
4214 | tmp_sym->name, &(tmp_sym->declared_at)); | |
524af0d6 | 4215 | retval = false; |
a8b3b0b6 CR |
4216 | } |
4217 | ||
4218 | if (tmp_sym->attr.allocatable == 1) | |
4219 | { | |
c4100eae | 4220 | gfc_error ("Variable %qs at %L cannot have both the " |
a8b3b0b6 CR |
4221 | "ALLOCATABLE and BIND(C) attributes", |
4222 | tmp_sym->name, &(tmp_sym->declared_at)); | |
524af0d6 | 4223 | retval = false; |
a8b3b0b6 CR |
4224 | } |
4225 | ||
8327f9c2 TB |
4226 | } |
4227 | ||
4228 | /* If it is a BIND(C) function, make sure the return value is a | |
4229 | scalar value. The previous tests in this function made sure | |
4230 | the type is interoperable. */ | |
4231 | if (bind_c_function && tmp_sym->as != NULL) | |
c4100eae | 4232 | gfc_error ("Return type of BIND(C) function %qs at %L cannot " |
8327f9c2 TB |
4233 | "be an array", tmp_sym->name, &(tmp_sym->declared_at)); |
4234 | ||
4235 | /* BIND(C) functions can not return a character string. */ | |
4236 | if (bind_c_function && tmp_sym->ts.type == BT_CHARACTER) | |
bc21d315 JW |
4237 | if (tmp_sym->ts.u.cl == NULL || tmp_sym->ts.u.cl->length == NULL |
4238 | || tmp_sym->ts.u.cl->length->expr_type != EXPR_CONSTANT | |
4239 | || mpz_cmp_si (tmp_sym->ts.u.cl->length->value.integer, 1) != 0) | |
c4100eae | 4240 | gfc_error ("Return type of BIND(C) function %qs at %L cannot " |
a8b3b0b6 CR |
4241 | "be a character string", tmp_sym->name, |
4242 | &(tmp_sym->declared_at)); | |
a8b3b0b6 CR |
4243 | } |
4244 | ||
4245 | /* See if the symbol has been marked as private. If it has, make sure | |
4246 | there is no binding label and warn the user if there is one. */ | |
4247 | if (tmp_sym->attr.access == ACCESS_PRIVATE | |
62603fae | 4248 | && tmp_sym->binding_label) |
a8b3b0b6 CR |
4249 | /* Use gfc_warning_now because we won't say that the symbol fails |
4250 | just because of this. */ | |
db30e21c | 4251 | gfc_warning_now (0, "Symbol %qs at %L is marked PRIVATE but has been " |
4daa149b | 4252 | "given the binding label %qs", tmp_sym->name, |
a8b3b0b6 CR |
4253 | &(tmp_sym->declared_at), tmp_sym->binding_label); |
4254 | ||
4255 | return retval; | |
4256 | } | |
4257 | ||
4258 | ||
4259 | /* Set the appropriate fields for a symbol that's been declared as | |
4260 | BIND(C) (the is_bind_c flag and the binding label), and verify that | |
4261 | the type is C interoperable. Errors are reported by the functions | |
4262 | used to set/test these fields. */ | |
4263 | ||
524af0d6 | 4264 | bool |
a8b3b0b6 CR |
4265 | set_verify_bind_c_sym (gfc_symbol *tmp_sym, int num_idents) |
4266 | { | |
524af0d6 | 4267 | bool retval = true; |
f5acf0f2 | 4268 | |
a8b3b0b6 CR |
4269 | /* TODO: Do we need to make sure the vars aren't marked private? */ |
4270 | ||
4271 | /* Set the is_bind_c bit in symbol_attribute. */ | |
4272 | gfc_add_is_bind_c (&(tmp_sym->attr), tmp_sym->name, &gfc_current_locus, 0); | |
4273 | ||
524af0d6 JB |
4274 | if (!set_binding_label (&tmp_sym->binding_label, tmp_sym->name, num_idents)) |
4275 | return false; | |
a8b3b0b6 CR |
4276 | |
4277 | return retval; | |
4278 | } | |
4279 | ||
4280 | ||
4281 | /* Set the fields marking the given common block as BIND(C), including | |
4282 | a binding label, and report any errors encountered. */ | |
4283 | ||
524af0d6 | 4284 | bool |
a8b3b0b6 CR |
4285 | set_verify_bind_c_com_block (gfc_common_head *com_block, int num_idents) |
4286 | { | |
524af0d6 | 4287 | bool retval = true; |
f5acf0f2 | 4288 | |
a8b3b0b6 | 4289 | /* destLabel, common name, typespec (which may have binding label). */ |
524af0d6 JB |
4290 | if (!set_binding_label (&com_block->binding_label, com_block->name, |
4291 | num_idents)) | |
4292 | return false; | |
a8b3b0b6 CR |
4293 | |
4294 | /* Set the given common block (com_block) to being bind(c) (1). */ | |
4295 | set_com_block_bind_c (com_block, 1); | |
4296 | ||
4297 | return retval; | |
4298 | } | |
4299 | ||
4300 | ||
4301 | /* Retrieve the list of one or more identifiers that the given bind(c) | |
4302 | attribute applies to. */ | |
4303 | ||
524af0d6 | 4304 | bool |
a8b3b0b6 CR |
4305 | get_bind_c_idents (void) |
4306 | { | |
4307 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4308 | int num_idents = 0; | |
4309 | gfc_symbol *tmp_sym = NULL; | |
4310 | match found_id; | |
4311 | gfc_common_head *com_block = NULL; | |
f5acf0f2 | 4312 | |
a8b3b0b6 CR |
4313 | if (gfc_match_name (name) == MATCH_YES) |
4314 | { | |
4315 | found_id = MATCH_YES; | |
4316 | gfc_get_ha_symbol (name, &tmp_sym); | |
4317 | } | |
4318 | else if (match_common_name (name) == MATCH_YES) | |
4319 | { | |
4320 | found_id = MATCH_YES; | |
4321 | com_block = gfc_get_common (name, 0); | |
4322 | } | |
4323 | else | |
4324 | { | |
4325 | gfc_error ("Need either entity or common block name for " | |
4326 | "attribute specification statement at %C"); | |
524af0d6 | 4327 | return false; |
a8b3b0b6 | 4328 | } |
f5acf0f2 | 4329 | |
a8b3b0b6 CR |
4330 | /* Save the current identifier and look for more. */ |
4331 | do | |
4332 | { | |
4333 | /* Increment the number of identifiers found for this spec stmt. */ | |
4334 | num_idents++; | |
4335 | ||
4336 | /* Make sure we have a sym or com block, and verify that it can | |
4337 | be bind(c). Set the appropriate field(s) and look for more | |
4338 | identifiers. */ | |
f5acf0f2 | 4339 | if (tmp_sym != NULL || com_block != NULL) |
a8b3b0b6 CR |
4340 | { |
4341 | if (tmp_sym != NULL) | |
4342 | { | |
524af0d6 JB |
4343 | if (!set_verify_bind_c_sym (tmp_sym, num_idents)) |
4344 | return false; | |
a8b3b0b6 CR |
4345 | } |
4346 | else | |
4347 | { | |
524af0d6 JB |
4348 | if (!set_verify_bind_c_com_block (com_block, num_idents)) |
4349 | return false; | |
a8b3b0b6 | 4350 | } |
f5acf0f2 | 4351 | |
a8b3b0b6 CR |
4352 | /* Look to see if we have another identifier. */ |
4353 | tmp_sym = NULL; | |
4354 | if (gfc_match_eos () == MATCH_YES) | |
4355 | found_id = MATCH_NO; | |
4356 | else if (gfc_match_char (',') != MATCH_YES) | |
4357 | found_id = MATCH_NO; | |
4358 | else if (gfc_match_name (name) == MATCH_YES) | |
4359 | { | |
4360 | found_id = MATCH_YES; | |
4361 | gfc_get_ha_symbol (name, &tmp_sym); | |
4362 | } | |
4363 | else if (match_common_name (name) == MATCH_YES) | |
4364 | { | |
4365 | found_id = MATCH_YES; | |
4366 | com_block = gfc_get_common (name, 0); | |
4367 | } | |
4368 | else | |
4369 | { | |
4370 | gfc_error ("Missing entity or common block name for " | |
4371 | "attribute specification statement at %C"); | |
524af0d6 | 4372 | return false; |
a8b3b0b6 CR |
4373 | } |
4374 | } | |
4375 | else | |
4376 | { | |
4377 | gfc_internal_error ("Missing symbol"); | |
4378 | } | |
4379 | } while (found_id == MATCH_YES); | |
4380 | ||
4381 | /* if we get here we were successful */ | |
524af0d6 | 4382 | return true; |
a8b3b0b6 CR |
4383 | } |
4384 | ||
4385 | ||
4386 | /* Try and match a BIND(C) attribute specification statement. */ | |
f5acf0f2 | 4387 | |
a8b3b0b6 CR |
4388 | match |
4389 | gfc_match_bind_c_stmt (void) | |
4390 | { | |
4391 | match found_match = MATCH_NO; | |
4392 | gfc_typespec *ts; | |
4393 | ||
4394 | ts = ¤t_ts; | |
f5acf0f2 | 4395 | |
a8b3b0b6 CR |
4396 | /* This may not be necessary. */ |
4397 | gfc_clear_ts (ts); | |
4398 | /* Clear the temporary binding label holder. */ | |
62603fae | 4399 | curr_binding_label = NULL; |
a8b3b0b6 CR |
4400 | |
4401 | /* Look for the bind(c). */ | |
1eabf70a | 4402 | found_match = gfc_match_bind_c (NULL, true); |
a8b3b0b6 CR |
4403 | |
4404 | if (found_match == MATCH_YES) | |
4405 | { | |
878cdb7b TB |
4406 | if (!gfc_notify_std (GFC_STD_F2003, "BIND(C) statement at %C")) |
4407 | return MATCH_ERROR; | |
4408 | ||
a8b3b0b6 CR |
4409 | /* Look for the :: now, but it is not required. */ |
4410 | gfc_match (" :: "); | |
4411 | ||
4412 | /* Get the identifier(s) that needs to be updated. This may need to | |
4413 | change to hand the flag(s) for the attr specified so all identifiers | |
4414 | found can have all appropriate parts updated (assuming that the same | |
4415 | spec stmt can have multiple attrs, such as both bind(c) and | |
4416 | allocatable...). */ | |
524af0d6 | 4417 | if (!get_bind_c_idents ()) |
a8b3b0b6 CR |
4418 | /* Error message should have printed already. */ |
4419 | return MATCH_ERROR; | |
4420 | } | |
4421 | ||
4422 | return found_match; | |
4423 | } | |
4424 | ||
4425 | ||
6de9cd9a DN |
4426 | /* Match a data declaration statement. */ |
4427 | ||
4428 | match | |
4429 | gfc_match_data_decl (void) | |
4430 | { | |
4431 | gfc_symbol *sym; | |
4432 | match m; | |
949d5b72 | 4433 | int elem; |
6de9cd9a | 4434 | |
a8b3b0b6 | 4435 | num_idents_on_line = 0; |
f5acf0f2 | 4436 | |
e74f1cc8 | 4437 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
6de9cd9a DN |
4438 | if (m != MATCH_YES) |
4439 | return m; | |
4440 | ||
2e23972e JW |
4441 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
4442 | && gfc_current_state () != COMP_DERIVED) | |
6de9cd9a | 4443 | { |
bc21d315 | 4444 | sym = gfc_use_derived (current_ts.u.derived); |
6de9cd9a DN |
4445 | |
4446 | if (sym == NULL) | |
4447 | { | |
4448 | m = MATCH_ERROR; | |
4449 | goto cleanup; | |
4450 | } | |
4451 | ||
bc21d315 | 4452 | current_ts.u.derived = sym; |
6de9cd9a DN |
4453 | } |
4454 | ||
4455 | m = match_attr_spec (); | |
4456 | if (m == MATCH_ERROR) | |
4457 | { | |
4458 | m = MATCH_NO; | |
4459 | goto cleanup; | |
4460 | } | |
4461 | ||
8b704316 PT |
4462 | if (current_ts.type == BT_CLASS |
4463 | && current_ts.u.derived->attr.unlimited_polymorphic) | |
4464 | goto ok; | |
4465 | ||
2e23972e JW |
4466 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
4467 | && current_ts.u.derived->components == NULL | |
bc21d315 | 4468 | && !current_ts.u.derived->attr.zero_comp) |
6de9cd9a DN |
4469 | { |
4470 | ||
4471 | if (current_attr.pointer && gfc_current_state () == COMP_DERIVED) | |
4472 | goto ok; | |
4473 | ||
bc21d315 | 4474 | gfc_find_symbol (current_ts.u.derived->name, |
dd8b9dde | 4475 | current_ts.u.derived->ns, 1, &sym); |
6de9cd9a | 4476 | |
976e21f6 | 4477 | /* Any symbol that we find had better be a type definition |
636dff67 | 4478 | which has its components defined. */ |
976e21f6 | 4479 | if (sym != NULL && sym->attr.flavor == FL_DERIVED |
bc21d315 JW |
4480 | && (current_ts.u.derived->components != NULL |
4481 | || current_ts.u.derived->attr.zero_comp)) | |
6de9cd9a DN |
4482 | goto ok; |
4483 | ||
a1b80ec7 JW |
4484 | gfc_error ("Derived type at %C has not been previously defined " |
4485 | "and so cannot appear in a derived type definition"); | |
4486 | m = MATCH_ERROR; | |
4487 | goto cleanup; | |
6de9cd9a DN |
4488 | } |
4489 | ||
4490 | ok: | |
4491 | /* If we have an old-style character declaration, and no new-style | |
4492 | attribute specifications, then there a comma is optional between | |
4493 | the type specification and the variable list. */ | |
4494 | if (m == MATCH_NO && current_ts.type == BT_CHARACTER && old_char_selector) | |
4495 | gfc_match_char (','); | |
4496 | ||
949d5b72 PT |
4497 | /* Give the types/attributes to symbols that follow. Give the element |
4498 | a number so that repeat character length expressions can be copied. */ | |
4499 | elem = 1; | |
6de9cd9a DN |
4500 | for (;;) |
4501 | { | |
a8b3b0b6 | 4502 | num_idents_on_line++; |
949d5b72 | 4503 | m = variable_decl (elem++); |
6de9cd9a DN |
4504 | if (m == MATCH_ERROR) |
4505 | goto cleanup; | |
4506 | if (m == MATCH_NO) | |
4507 | break; | |
4508 | ||
4509 | if (gfc_match_eos () == MATCH_YES) | |
4510 | goto cleanup; | |
4511 | if (gfc_match_char (',') != MATCH_YES) | |
4512 | break; | |
4513 | } | |
4514 | ||
0f447a6e | 4515 | if (!gfc_error_flag_test ()) |
8f81c3c6 | 4516 | gfc_error ("Syntax error in data declaration at %C"); |
6de9cd9a DN |
4517 | m = MATCH_ERROR; |
4518 | ||
a9f6f1f2 JD |
4519 | gfc_free_data_all (gfc_current_ns); |
4520 | ||
6de9cd9a DN |
4521 | cleanup: |
4522 | gfc_free_array_spec (current_as); | |
4523 | current_as = NULL; | |
4524 | return m; | |
4525 | } | |
4526 | ||
4527 | ||
4528 | /* Match a prefix associated with a function or subroutine | |
4529 | declaration. If the typespec pointer is nonnull, then a typespec | |
4530 | can be matched. Note that if nothing matches, MATCH_YES is | |
4531 | returned (the null string was matched). */ | |
4532 | ||
1c8bcdf7 PT |
4533 | match |
4534 | gfc_match_prefix (gfc_typespec *ts) | |
6de9cd9a | 4535 | { |
7389bce6 | 4536 | bool seen_type; |
e6c14898 DK |
4537 | bool seen_impure; |
4538 | bool found_prefix; | |
6de9cd9a DN |
4539 | |
4540 | gfc_clear_attr (¤t_attr); | |
e6c14898 DK |
4541 | seen_type = false; |
4542 | seen_impure = false; | |
6de9cd9a | 4543 | |
3df684e2 DK |
4544 | gcc_assert (!gfc_matching_prefix); |
4545 | gfc_matching_prefix = true; | |
f37e928c | 4546 | |
e6c14898 | 4547 | do |
6de9cd9a | 4548 | { |
e6c14898 | 4549 | found_prefix = false; |
6de9cd9a | 4550 | |
e6c14898 DK |
4551 | if (!seen_type && ts != NULL |
4552 | && gfc_match_decl_type_spec (ts, 0) == MATCH_YES | |
4553 | && gfc_match_space () == MATCH_YES) | |
4554 | { | |
6de9cd9a | 4555 | |
e6c14898 DK |
4556 | seen_type = true; |
4557 | found_prefix = true; | |
4558 | } | |
4559 | ||
4560 | if (gfc_match ("elemental% ") == MATCH_YES) | |
4561 | { | |
524af0d6 | 4562 | if (!gfc_add_elemental (¤t_attr, NULL)) |
e6c14898 DK |
4563 | goto error; |
4564 | ||
4565 | found_prefix = true; | |
4566 | } | |
4567 | ||
4568 | if (gfc_match ("pure% ") == MATCH_YES) | |
4569 | { | |
524af0d6 | 4570 | if (!gfc_add_pure (¤t_attr, NULL)) |
e6c14898 DK |
4571 | goto error; |
4572 | ||
4573 | found_prefix = true; | |
4574 | } | |
6de9cd9a | 4575 | |
e6c14898 DK |
4576 | if (gfc_match ("recursive% ") == MATCH_YES) |
4577 | { | |
524af0d6 | 4578 | if (!gfc_add_recursive (¤t_attr, NULL)) |
e6c14898 DK |
4579 | goto error; |
4580 | ||
4581 | found_prefix = true; | |
4582 | } | |
4583 | ||
4584 | /* IMPURE is a somewhat special case, as it needs not set an actual | |
4585 | attribute but rather only prevents ELEMENTAL routines from being | |
4586 | automatically PURE. */ | |
4587 | if (gfc_match ("impure% ") == MATCH_YES) | |
4588 | { | |
524af0d6 | 4589 | if (!gfc_notify_std (GFC_STD_F2008, "IMPURE procedure at %C")) |
e6c14898 DK |
4590 | goto error; |
4591 | ||
4592 | seen_impure = true; | |
4593 | found_prefix = true; | |
4594 | } | |
6de9cd9a | 4595 | } |
e6c14898 | 4596 | while (found_prefix); |
6de9cd9a | 4597 | |
e6c14898 DK |
4598 | /* IMPURE and PURE must not both appear, of course. */ |
4599 | if (seen_impure && current_attr.pure) | |
6de9cd9a | 4600 | { |
e6c14898 DK |
4601 | gfc_error ("PURE and IMPURE must not appear both at %C"); |
4602 | goto error; | |
6de9cd9a DN |
4603 | } |
4604 | ||
e6c14898 DK |
4605 | /* If IMPURE it not seen but the procedure is ELEMENTAL, mark it as PURE. */ |
4606 | if (!seen_impure && current_attr.elemental && !current_attr.pure) | |
6de9cd9a | 4607 | { |
524af0d6 | 4608 | if (!gfc_add_pure (¤t_attr, NULL)) |
f37e928c | 4609 | goto error; |
6de9cd9a DN |
4610 | } |
4611 | ||
4612 | /* At this point, the next item is not a prefix. */ | |
3df684e2 | 4613 | gcc_assert (gfc_matching_prefix); |
4668d6f9 PT |
4614 | |
4615 | /* MODULE should be the last prefix before FUNCTION or SUBROUTINE. | |
4616 | Since this is a prefix like PURE, ELEMENTAL, etc., having a | |
4617 | corresponding attribute seems natural and distinguishes these | |
4618 | procedures from procedure types of PROC_MODULE, which these are | |
4619 | as well. */ | |
4620 | if ((gfc_current_state () == COMP_INTERFACE | |
4621 | || gfc_current_state () == COMP_CONTAINS) | |
4622 | && gfc_match ("module% ") == MATCH_YES) | |
4623 | { | |
4624 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE prefix at %C")) | |
4625 | goto error; | |
4626 | else | |
4627 | current_attr.module_procedure = 1; | |
4628 | } | |
4629 | ||
3df684e2 | 4630 | gfc_matching_prefix = false; |
6de9cd9a | 4631 | return MATCH_YES; |
f37e928c DK |
4632 | |
4633 | error: | |
3df684e2 DK |
4634 | gcc_assert (gfc_matching_prefix); |
4635 | gfc_matching_prefix = false; | |
f37e928c | 4636 | return MATCH_ERROR; |
6de9cd9a DN |
4637 | } |
4638 | ||
4639 | ||
1c8bcdf7 | 4640 | /* Copy attributes matched by gfc_match_prefix() to attributes on a symbol. */ |
6de9cd9a | 4641 | |
524af0d6 | 4642 | static bool |
636dff67 | 4643 | copy_prefix (symbol_attribute *dest, locus *where) |
6de9cd9a | 4644 | { |
524af0d6 JB |
4645 | if (current_attr.pure && !gfc_add_pure (dest, where)) |
4646 | return false; | |
6de9cd9a | 4647 | |
524af0d6 JB |
4648 | if (current_attr.elemental && !gfc_add_elemental (dest, where)) |
4649 | return false; | |
6de9cd9a | 4650 | |
524af0d6 JB |
4651 | if (current_attr.recursive && !gfc_add_recursive (dest, where)) |
4652 | return false; | |
6de9cd9a | 4653 | |
524af0d6 | 4654 | return true; |
6de9cd9a DN |
4655 | } |
4656 | ||
4657 | ||
4658 | /* Match a formal argument list. */ | |
4659 | ||
4660 | match | |
636dff67 | 4661 | gfc_match_formal_arglist (gfc_symbol *progname, int st_flag, int null_flag) |
6de9cd9a DN |
4662 | { |
4663 | gfc_formal_arglist *head, *tail, *p, *q; | |
4664 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4665 | gfc_symbol *sym; | |
4666 | match m; | |
4668d6f9 | 4667 | gfc_formal_arglist *formal = NULL; |
6de9cd9a DN |
4668 | |
4669 | head = tail = NULL; | |
4670 | ||
4668d6f9 PT |
4671 | /* Keep the interface formal argument list and null it so that the |
4672 | matching for the new declaration can be done. The numbers and | |
4673 | names of the arguments are checked here. The interface formal | |
4674 | arguments are retained in formal_arglist and the characteristics | |
4675 | are compared in resolve.c(resolve_fl_procedure). See the remark | |
4676 | in get_proc_name about the eventual need to copy the formal_arglist | |
4677 | and populate the formal namespace of the interface symbol. */ | |
4678 | if (progname->attr.module_procedure | |
4679 | && progname->attr.host_assoc) | |
4680 | { | |
4681 | formal = progname->formal; | |
4682 | progname->formal = NULL; | |
4683 | } | |
4684 | ||
6de9cd9a DN |
4685 | if (gfc_match_char ('(') != MATCH_YES) |
4686 | { | |
4687 | if (null_flag) | |
4688 | goto ok; | |
4689 | return MATCH_NO; | |
4690 | } | |
4691 | ||
4692 | if (gfc_match_char (')') == MATCH_YES) | |
4693 | goto ok; | |
4694 | ||
4695 | for (;;) | |
4696 | { | |
4697 | if (gfc_match_char ('*') == MATCH_YES) | |
9362a03b JW |
4698 | { |
4699 | sym = NULL; | |
524af0d6 JB |
4700 | if (!gfc_notify_std (GFC_STD_F95_OBS, "Alternate-return argument " |
4701 | "at %C")) | |
9362a03b JW |
4702 | { |
4703 | m = MATCH_ERROR; | |
4704 | goto cleanup; | |
4705 | } | |
4706 | } | |
6de9cd9a DN |
4707 | else |
4708 | { | |
4709 | m = gfc_match_name (name); | |
4710 | if (m != MATCH_YES) | |
4711 | goto cleanup; | |
4712 | ||
4713 | if (gfc_get_symbol (name, NULL, &sym)) | |
4714 | goto cleanup; | |
4715 | } | |
4716 | ||
4717 | p = gfc_get_formal_arglist (); | |
4718 | ||
4719 | if (head == NULL) | |
4720 | head = tail = p; | |
4721 | else | |
4722 | { | |
4723 | tail->next = p; | |
4724 | tail = p; | |
4725 | } | |
4726 | ||
4727 | tail->sym = sym; | |
4728 | ||
4729 | /* We don't add the VARIABLE flavor because the name could be a | |
636dff67 SK |
4730 | dummy procedure. We don't apply these attributes to formal |
4731 | arguments of statement functions. */ | |
6de9cd9a | 4732 | if (sym != NULL && !st_flag |
524af0d6 JB |
4733 | && (!gfc_add_dummy(&sym->attr, sym->name, NULL) |
4734 | || !gfc_missing_attr (&sym->attr, NULL))) | |
6de9cd9a DN |
4735 | { |
4736 | m = MATCH_ERROR; | |
4737 | goto cleanup; | |
4738 | } | |
4739 | ||
4740 | /* The name of a program unit can be in a different namespace, | |
636dff67 SK |
4741 | so check for it explicitly. After the statement is accepted, |
4742 | the name is checked for especially in gfc_get_symbol(). */ | |
6de9cd9a DN |
4743 | if (gfc_new_block != NULL && sym != NULL |
4744 | && strcmp (sym->name, gfc_new_block->name) == 0) | |
4745 | { | |
c4100eae | 4746 | gfc_error ("Name %qs at %C is the name of the procedure", |
6de9cd9a DN |
4747 | sym->name); |
4748 | m = MATCH_ERROR; | |
4749 | goto cleanup; | |
4750 | } | |
4751 | ||
4752 | if (gfc_match_char (')') == MATCH_YES) | |
4753 | goto ok; | |
4754 | ||
4755 | m = gfc_match_char (','); | |
4756 | if (m != MATCH_YES) | |
4757 | { | |
4758 | gfc_error ("Unexpected junk in formal argument list at %C"); | |
4759 | goto cleanup; | |
4760 | } | |
4761 | } | |
4762 | ||
4763 | ok: | |
4764 | /* Check for duplicate symbols in the formal argument list. */ | |
4765 | if (head != NULL) | |
4766 | { | |
4767 | for (p = head; p->next; p = p->next) | |
4768 | { | |
4769 | if (p->sym == NULL) | |
4770 | continue; | |
4771 | ||
4772 | for (q = p->next; q; q = q->next) | |
4773 | if (p->sym == q->sym) | |
4774 | { | |
c4100eae | 4775 | gfc_error ("Duplicate symbol %qs in formal argument list " |
636dff67 | 4776 | "at %C", p->sym->name); |
6de9cd9a DN |
4777 | |
4778 | m = MATCH_ERROR; | |
4779 | goto cleanup; | |
4780 | } | |
4781 | } | |
4782 | } | |
4783 | ||
524af0d6 | 4784 | if (!gfc_add_explicit_interface (progname, IFSRC_DECL, head, NULL)) |
6de9cd9a DN |
4785 | { |
4786 | m = MATCH_ERROR; | |
4787 | goto cleanup; | |
4788 | } | |
4789 | ||
4668d6f9 PT |
4790 | if (formal) |
4791 | { | |
4792 | for (p = formal, q = head; p && q; p = p->next, q = q->next) | |
4793 | { | |
4794 | if ((p->next != NULL && q->next == NULL) | |
4795 | || (p->next == NULL && q->next != NULL)) | |
4796 | gfc_error_now ("Mismatch in number of MODULE PROCEDURE " | |
4797 | "formal arguments at %C"); | |
4798 | else if ((p->sym == NULL && q->sym == NULL) | |
4799 | || strcmp (p->sym->name, q->sym->name) == 0) | |
4800 | continue; | |
4801 | else | |
4802 | gfc_error_now ("Mismatch in MODULE PROCEDURE formal " | |
4803 | "argument names (%s/%s) at %C", | |
4804 | p->sym->name, q->sym->name); | |
4805 | } | |
4806 | } | |
4807 | ||
6de9cd9a DN |
4808 | return MATCH_YES; |
4809 | ||
4810 | cleanup: | |
4811 | gfc_free_formal_arglist (head); | |
4812 | return m; | |
4813 | } | |
4814 | ||
4815 | ||
4816 | /* Match a RESULT specification following a function declaration or | |
4817 | ENTRY statement. Also matches the end-of-statement. */ | |
4818 | ||
4819 | static match | |
66e4ab31 | 4820 | match_result (gfc_symbol *function, gfc_symbol **result) |
6de9cd9a DN |
4821 | { |
4822 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4823 | gfc_symbol *r; | |
4824 | match m; | |
4825 | ||
4826 | if (gfc_match (" result (") != MATCH_YES) | |
4827 | return MATCH_NO; | |
4828 | ||
4829 | m = gfc_match_name (name); | |
4830 | if (m != MATCH_YES) | |
4831 | return m; | |
4832 | ||
a8b3b0b6 CR |
4833 | /* Get the right paren, and that's it because there could be the |
4834 | bind(c) attribute after the result clause. */ | |
524af0d6 | 4835 | if (gfc_match_char (')') != MATCH_YES) |
6de9cd9a | 4836 | { |
a8b3b0b6 | 4837 | /* TODO: should report the missing right paren here. */ |
6de9cd9a DN |
4838 | return MATCH_ERROR; |
4839 | } | |
4840 | ||
4841 | if (strcmp (function->name, name) == 0) | |
4842 | { | |
636dff67 | 4843 | gfc_error ("RESULT variable at %C must be different than function name"); |
6de9cd9a DN |
4844 | return MATCH_ERROR; |
4845 | } | |
4846 | ||
4847 | if (gfc_get_symbol (name, NULL, &r)) | |
4848 | return MATCH_ERROR; | |
4849 | ||
524af0d6 | 4850 | if (!gfc_add_result (&r->attr, r->name, NULL)) |
6de9cd9a DN |
4851 | return MATCH_ERROR; |
4852 | ||
4853 | *result = r; | |
4854 | ||
4855 | return MATCH_YES; | |
4856 | } | |
4857 | ||
4858 | ||
a8b3b0b6 CR |
4859 | /* Match a function suffix, which could be a combination of a result |
4860 | clause and BIND(C), either one, or neither. The draft does not | |
4861 | require them to come in a specific order. */ | |
4862 | ||
4863 | match | |
4864 | gfc_match_suffix (gfc_symbol *sym, gfc_symbol **result) | |
4865 | { | |
4866 | match is_bind_c; /* Found bind(c). */ | |
4867 | match is_result; /* Found result clause. */ | |
4868 | match found_match; /* Status of whether we've found a good match. */ | |
8fc541d3 | 4869 | char peek_char; /* Character we're going to peek at. */ |
1eabf70a | 4870 | bool allow_binding_name; |
a8b3b0b6 CR |
4871 | |
4872 | /* Initialize to having found nothing. */ | |
4873 | found_match = MATCH_NO; | |
f5acf0f2 | 4874 | is_bind_c = MATCH_NO; |
a8b3b0b6 CR |
4875 | is_result = MATCH_NO; |
4876 | ||
4877 | /* Get the next char to narrow between result and bind(c). */ | |
4878 | gfc_gobble_whitespace (); | |
8fc541d3 | 4879 | peek_char = gfc_peek_ascii_char (); |
a8b3b0b6 | 4880 | |
1eabf70a TB |
4881 | /* C binding names are not allowed for internal procedures. */ |
4882 | if (gfc_current_state () == COMP_CONTAINS | |
4883 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
4884 | allow_binding_name = false; | |
4885 | else | |
4886 | allow_binding_name = true; | |
4887 | ||
a8b3b0b6 CR |
4888 | switch (peek_char) |
4889 | { | |
4890 | case 'r': | |
4891 | /* Look for result clause. */ | |
4892 | is_result = match_result (sym, result); | |
4893 | if (is_result == MATCH_YES) | |
4894 | { | |
4895 | /* Now see if there is a bind(c) after it. */ | |
1eabf70a | 4896 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
4897 | /* We've found the result clause and possibly bind(c). */ |
4898 | found_match = MATCH_YES; | |
4899 | } | |
4900 | else | |
4901 | /* This should only be MATCH_ERROR. */ | |
f5acf0f2 | 4902 | found_match = is_result; |
a8b3b0b6 CR |
4903 | break; |
4904 | case 'b': | |
4905 | /* Look for bind(c) first. */ | |
1eabf70a | 4906 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
4907 | if (is_bind_c == MATCH_YES) |
4908 | { | |
4909 | /* Now see if a result clause followed it. */ | |
4910 | is_result = match_result (sym, result); | |
4911 | found_match = MATCH_YES; | |
4912 | } | |
4913 | else | |
4914 | { | |
4915 | /* Should only be a MATCH_ERROR if we get here after seeing 'b'. */ | |
4916 | found_match = MATCH_ERROR; | |
4917 | } | |
4918 | break; | |
4919 | default: | |
4920 | gfc_error ("Unexpected junk after function declaration at %C"); | |
4921 | found_match = MATCH_ERROR; | |
4922 | break; | |
4923 | } | |
4924 | ||
a8b3b0b6 | 4925 | if (is_bind_c == MATCH_YES) |
01f4fff1 | 4926 | { |
1eabf70a | 4927 | /* Fortran 2008 draft allows BIND(C) for internal procedures. */ |
01f4fff1 | 4928 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 4929 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
524af0d6 JB |
4930 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
4931 | "at %L may not be specified for an internal " | |
4932 | "procedure", &gfc_current_locus)) | |
1eabf70a TB |
4933 | return MATCH_ERROR; |
4934 | ||
524af0d6 | 4935 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, &gfc_current_locus, 1)) |
01f4fff1 TB |
4936 | return MATCH_ERROR; |
4937 | } | |
f5acf0f2 | 4938 | |
a8b3b0b6 CR |
4939 | return found_match; |
4940 | } | |
4941 | ||
4942 | ||
3070bab4 JW |
4943 | /* Procedure pointer return value without RESULT statement: |
4944 | Add "hidden" result variable named "ppr@". */ | |
4945 | ||
524af0d6 | 4946 | static bool |
3070bab4 JW |
4947 | add_hidden_procptr_result (gfc_symbol *sym) |
4948 | { | |
4949 | bool case1,case2; | |
4950 | ||
4951 | if (gfc_notification_std (GFC_STD_F2003) == ERROR) | |
524af0d6 | 4952 | return false; |
3070bab4 JW |
4953 | |
4954 | /* First usage case: PROCEDURE and EXTERNAL statements. */ | |
4955 | case1 = gfc_current_state () == COMP_FUNCTION && gfc_current_block () | |
4956 | && strcmp (gfc_current_block ()->name, sym->name) == 0 | |
4957 | && sym->attr.external; | |
4958 | /* Second usage case: INTERFACE statements. */ | |
4959 | case2 = gfc_current_state () == COMP_INTERFACE && gfc_state_stack->previous | |
4960 | && gfc_state_stack->previous->state == COMP_FUNCTION | |
4961 | && strcmp (gfc_state_stack->previous->sym->name, sym->name) == 0; | |
4962 | ||
4963 | if (case1 || case2) | |
4964 | { | |
4965 | gfc_symtree *stree; | |
4966 | if (case1) | |
08a6b8e0 | 4967 | gfc_get_sym_tree ("ppr@", gfc_current_ns, &stree, false); |
3070bab4 | 4968 | else if (case2) |
c73b6478 JW |
4969 | { |
4970 | gfc_symtree *st2; | |
08a6b8e0 | 4971 | gfc_get_sym_tree ("ppr@", gfc_current_ns->parent, &stree, false); |
c73b6478 JW |
4972 | st2 = gfc_new_symtree (&gfc_current_ns->sym_root, "ppr@"); |
4973 | st2->n.sym = stree->n.sym; | |
4974 | } | |
3070bab4 JW |
4975 | sym->result = stree->n.sym; |
4976 | ||
4977 | sym->result->attr.proc_pointer = sym->attr.proc_pointer; | |
4978 | sym->result->attr.pointer = sym->attr.pointer; | |
4979 | sym->result->attr.external = sym->attr.external; | |
4980 | sym->result->attr.referenced = sym->attr.referenced; | |
fc9c6e5d | 4981 | sym->result->ts = sym->ts; |
3070bab4 JW |
4982 | sym->attr.proc_pointer = 0; |
4983 | sym->attr.pointer = 0; | |
4984 | sym->attr.external = 0; | |
4985 | if (sym->result->attr.external && sym->result->attr.pointer) | |
4986 | { | |
4987 | sym->result->attr.pointer = 0; | |
4988 | sym->result->attr.proc_pointer = 1; | |
4989 | } | |
4990 | ||
4991 | return gfc_add_result (&sym->result->attr, sym->result->name, NULL); | |
4992 | } | |
4993 | /* POINTER after PROCEDURE/EXTERNAL/INTERFACE statement. */ | |
4994 | else if (sym->attr.function && !sym->attr.external && sym->attr.pointer | |
4995 | && sym->result && sym->result != sym && sym->result->attr.external | |
4996 | && sym == gfc_current_ns->proc_name | |
4997 | && sym == sym->result->ns->proc_name | |
4998 | && strcmp ("ppr@", sym->result->name) == 0) | |
4999 | { | |
5000 | sym->result->attr.proc_pointer = 1; | |
5001 | sym->attr.pointer = 0; | |
524af0d6 | 5002 | return true; |
3070bab4 JW |
5003 | } |
5004 | else | |
524af0d6 | 5005 | return false; |
3070bab4 JW |
5006 | } |
5007 | ||
5008 | ||
713485cc JW |
5009 | /* Match the interface for a PROCEDURE declaration, |
5010 | including brackets (R1212). */ | |
69773742 JW |
5011 | |
5012 | static match | |
713485cc | 5013 | match_procedure_interface (gfc_symbol **proc_if) |
69773742 JW |
5014 | { |
5015 | match m; | |
3276e0b3 | 5016 | gfc_symtree *st; |
69773742 | 5017 | locus old_loc, entry_loc; |
3276e0b3 PT |
5018 | gfc_namespace *old_ns = gfc_current_ns; |
5019 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
69773742 | 5020 | |
3276e0b3 | 5021 | old_loc = entry_loc = gfc_current_locus; |
69773742 JW |
5022 | gfc_clear_ts (¤t_ts); |
5023 | ||
5024 | if (gfc_match (" (") != MATCH_YES) | |
5025 | { | |
5026 | gfc_current_locus = entry_loc; | |
5027 | return MATCH_NO; | |
5028 | } | |
5029 | ||
5030 | /* Get the type spec. for the procedure interface. */ | |
5031 | old_loc = gfc_current_locus; | |
e74f1cc8 | 5032 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
f4256439 | 5033 | gfc_gobble_whitespace (); |
8fc541d3 | 5034 | if (m == MATCH_YES || (m == MATCH_NO && gfc_peek_ascii_char () == ')')) |
69773742 JW |
5035 | goto got_ts; |
5036 | ||
5037 | if (m == MATCH_ERROR) | |
5038 | return m; | |
5039 | ||
3276e0b3 | 5040 | /* Procedure interface is itself a procedure. */ |
69773742 | 5041 | gfc_current_locus = old_loc; |
3276e0b3 | 5042 | m = gfc_match_name (name); |
69773742 | 5043 | |
3276e0b3 PT |
5044 | /* First look to see if it is already accessible in the current |
5045 | namespace because it is use associated or contained. */ | |
5046 | st = NULL; | |
5047 | if (gfc_find_sym_tree (name, NULL, 0, &st)) | |
5048 | return MATCH_ERROR; | |
5049 | ||
5050 | /* If it is still not found, then try the parent namespace, if it | |
5051 | exists and create the symbol there if it is still not found. */ | |
5052 | if (gfc_current_ns->parent) | |
5053 | gfc_current_ns = gfc_current_ns->parent; | |
5054 | if (st == NULL && gfc_get_ha_sym_tree (name, &st)) | |
5055 | return MATCH_ERROR; | |
5056 | ||
5057 | gfc_current_ns = old_ns; | |
5058 | *proc_if = st->n.sym; | |
69773742 | 5059 | |
713485cc | 5060 | if (*proc_if) |
69773742 | 5061 | { |
713485cc | 5062 | (*proc_if)->refs++; |
bb343a6c TB |
5063 | /* Resolve interface if possible. That way, attr.procedure is only set |
5064 | if it is declared by a later procedure-declaration-stmt, which is | |
0e8d854e | 5065 | invalid per F08:C1216 (cf. resolve_procedure_interface). */ |
713485cc JW |
5066 | while ((*proc_if)->ts.interface) |
5067 | *proc_if = (*proc_if)->ts.interface; | |
bb343a6c | 5068 | |
0e8d854e JW |
5069 | if ((*proc_if)->attr.flavor == FL_UNKNOWN |
5070 | && (*proc_if)->ts.type == BT_UNKNOWN | |
524af0d6 JB |
5071 | && !gfc_add_flavor (&(*proc_if)->attr, FL_PROCEDURE, |
5072 | (*proc_if)->name, NULL)) | |
0e8d854e | 5073 | return MATCH_ERROR; |
69773742 JW |
5074 | } |
5075 | ||
5076 | got_ts: | |
69773742 JW |
5077 | if (gfc_match (" )") != MATCH_YES) |
5078 | { | |
5079 | gfc_current_locus = entry_loc; | |
5080 | return MATCH_NO; | |
5081 | } | |
5082 | ||
713485cc JW |
5083 | return MATCH_YES; |
5084 | } | |
5085 | ||
5086 | ||
5087 | /* Match a PROCEDURE declaration (R1211). */ | |
5088 | ||
5089 | static match | |
5090 | match_procedure_decl (void) | |
5091 | { | |
5092 | match m; | |
5093 | gfc_symbol *sym, *proc_if = NULL; | |
5094 | int num; | |
5095 | gfc_expr *initializer = NULL; | |
5096 | ||
1cc0e193 | 5097 | /* Parse interface (with brackets). */ |
713485cc JW |
5098 | m = match_procedure_interface (&proc_if); |
5099 | if (m != MATCH_YES) | |
5100 | return m; | |
5101 | ||
5102 | /* Parse attributes (with colons). */ | |
69773742 JW |
5103 | m = match_attr_spec(); |
5104 | if (m == MATCH_ERROR) | |
5105 | return MATCH_ERROR; | |
5106 | ||
0859be17 TB |
5107 | if (proc_if && proc_if->attr.is_bind_c && !current_attr.is_bind_c) |
5108 | { | |
5109 | current_attr.is_bind_c = 1; | |
5110 | has_name_equals = 0; | |
5111 | curr_binding_label = NULL; | |
5112 | } | |
5113 | ||
69773742 JW |
5114 | /* Get procedure symbols. */ |
5115 | for(num=1;;num++) | |
5116 | { | |
69773742 JW |
5117 | m = gfc_match_symbol (&sym, 0); |
5118 | if (m == MATCH_NO) | |
5119 | goto syntax; | |
5120 | else if (m == MATCH_ERROR) | |
5121 | return m; | |
5122 | ||
5123 | /* Add current_attr to the symbol attributes. */ | |
524af0d6 | 5124 | if (!gfc_copy_attr (&sym->attr, ¤t_attr, NULL)) |
69773742 JW |
5125 | return MATCH_ERROR; |
5126 | ||
5127 | if (sym->attr.is_bind_c) | |
5128 | { | |
5129 | /* Check for C1218. */ | |
5130 | if (!proc_if || !proc_if->attr.is_bind_c) | |
5131 | { | |
5132 | gfc_error ("BIND(C) attribute at %C requires " | |
5133 | "an interface with BIND(C)"); | |
5134 | return MATCH_ERROR; | |
5135 | } | |
5136 | /* Check for C1217. */ | |
5137 | if (has_name_equals && sym->attr.pointer) | |
5138 | { | |
5139 | gfc_error ("BIND(C) procedure with NAME may not have " | |
5140 | "POINTER attribute at %C"); | |
5141 | return MATCH_ERROR; | |
5142 | } | |
5143 | if (has_name_equals && sym->attr.dummy) | |
5144 | { | |
5145 | gfc_error ("Dummy procedure at %C may not have " | |
5146 | "BIND(C) attribute with NAME"); | |
5147 | return MATCH_ERROR; | |
5148 | } | |
5149 | /* Set binding label for BIND(C). */ | |
524af0d6 | 5150 | if (!set_binding_label (&sym->binding_label, sym->name, num)) |
69773742 JW |
5151 | return MATCH_ERROR; |
5152 | } | |
5153 | ||
524af0d6 | 5154 | if (!gfc_add_external (&sym->attr, NULL)) |
69773742 | 5155 | return MATCH_ERROR; |
3070bab4 | 5156 | |
524af0d6 | 5157 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
5158 | sym = sym->result; |
5159 | ||
524af0d6 | 5160 | if (!gfc_add_proc (&sym->attr, sym->name, NULL)) |
69773742 JW |
5161 | return MATCH_ERROR; |
5162 | ||
5163 | /* Set interface. */ | |
5164 | if (proc_if != NULL) | |
6cc309c9 | 5165 | { |
1d146030 JW |
5166 | if (sym->ts.type != BT_UNKNOWN) |
5167 | { | |
c4100eae | 5168 | gfc_error ("Procedure %qs at %L already has basic type of %s", |
1d146030 JW |
5169 | sym->name, &gfc_current_locus, |
5170 | gfc_basic_typename (sym->ts.type)); | |
5171 | return MATCH_ERROR; | |
5172 | } | |
32d99e68 | 5173 | sym->ts.interface = proc_if; |
6cc309c9 | 5174 | sym->attr.untyped = 1; |
c73b6478 | 5175 | sym->attr.if_source = IFSRC_IFBODY; |
6cc309c9 | 5176 | } |
69773742 JW |
5177 | else if (current_ts.type != BT_UNKNOWN) |
5178 | { | |
524af0d6 | 5179 | if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
1d146030 | 5180 | return MATCH_ERROR; |
32d99e68 JW |
5181 | sym->ts.interface = gfc_new_symbol ("", gfc_current_ns); |
5182 | sym->ts.interface->ts = current_ts; | |
d91909c0 | 5183 | sym->ts.interface->attr.flavor = FL_PROCEDURE; |
32d99e68 | 5184 | sym->ts.interface->attr.function = 1; |
d91909c0 | 5185 | sym->attr.function = 1; |
c73b6478 | 5186 | sym->attr.if_source = IFSRC_UNKNOWN; |
69773742 JW |
5187 | } |
5188 | ||
8fb74da4 JW |
5189 | if (gfc_match (" =>") == MATCH_YES) |
5190 | { | |
5191 | if (!current_attr.pointer) | |
5192 | { | |
5193 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
5194 | m = MATCH_ERROR; | |
5195 | goto cleanup; | |
5196 | } | |
5197 | ||
80f95228 | 5198 | m = match_pointer_init (&initializer, 1); |
8fb74da4 JW |
5199 | if (m != MATCH_YES) |
5200 | goto cleanup; | |
5201 | ||
524af0d6 | 5202 | if (!add_init_expr_to_sym (sym->name, &initializer, &gfc_current_locus)) |
8fb74da4 JW |
5203 | goto cleanup; |
5204 | ||
5205 | } | |
5206 | ||
69773742 JW |
5207 | if (gfc_match_eos () == MATCH_YES) |
5208 | return MATCH_YES; | |
5209 | if (gfc_match_char (',') != MATCH_YES) | |
5210 | goto syntax; | |
5211 | } | |
5212 | ||
5213 | syntax: | |
5214 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
5215 | return MATCH_ERROR; | |
8fb74da4 JW |
5216 | |
5217 | cleanup: | |
5218 | /* Free stuff up and return. */ | |
5219 | gfc_free_expr (initializer); | |
5220 | return m; | |
69773742 JW |
5221 | } |
5222 | ||
5223 | ||
713485cc JW |
5224 | static match |
5225 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc); | |
5226 | ||
5227 | ||
5228 | /* Match a procedure pointer component declaration (R445). */ | |
5229 | ||
5230 | static match | |
5231 | match_ppc_decl (void) | |
5232 | { | |
5233 | match m; | |
5234 | gfc_symbol *proc_if = NULL; | |
5235 | gfc_typespec ts; | |
5236 | int num; | |
5237 | gfc_component *c; | |
5238 | gfc_expr *initializer = NULL; | |
5239 | gfc_typebound_proc* tb; | |
5240 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5241 | ||
5242 | /* Parse interface (with brackets). */ | |
5243 | m = match_procedure_interface (&proc_if); | |
5244 | if (m != MATCH_YES) | |
5245 | goto syntax; | |
5246 | ||
5247 | /* Parse attributes. */ | |
5248 | tb = XCNEW (gfc_typebound_proc); | |
5249 | tb->where = gfc_current_locus; | |
5250 | m = match_binding_attributes (tb, false, true); | |
5251 | if (m == MATCH_ERROR) | |
5252 | return m; | |
5253 | ||
713485cc JW |
5254 | gfc_clear_attr (¤t_attr); |
5255 | current_attr.procedure = 1; | |
5256 | current_attr.proc_pointer = 1; | |
5257 | current_attr.access = tb->access; | |
5258 | current_attr.flavor = FL_PROCEDURE; | |
5259 | ||
5260 | /* Match the colons (required). */ | |
5261 | if (gfc_match (" ::") != MATCH_YES) | |
5262 | { | |
a4d9b221 | 5263 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
713485cc JW |
5264 | return MATCH_ERROR; |
5265 | } | |
5266 | ||
5267 | /* Check for C450. */ | |
5268 | if (!tb->nopass && proc_if == NULL) | |
5269 | { | |
5270 | gfc_error("NOPASS or explicit interface required at %C"); | |
5271 | return MATCH_ERROR; | |
5272 | } | |
5273 | ||
524af0d6 | 5274 | if (!gfc_notify_std (GFC_STD_F2003, "Procedure pointer component at %C")) |
3212c187 SK |
5275 | return MATCH_ERROR; |
5276 | ||
713485cc JW |
5277 | /* Match PPC names. */ |
5278 | ts = current_ts; | |
5279 | for(num=1;;num++) | |
5280 | { | |
5281 | m = gfc_match_name (name); | |
5282 | if (m == MATCH_NO) | |
5283 | goto syntax; | |
5284 | else if (m == MATCH_ERROR) | |
5285 | return m; | |
5286 | ||
524af0d6 | 5287 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
713485cc JW |
5288 | return MATCH_ERROR; |
5289 | ||
5290 | /* Add current_attr to the symbol attributes. */ | |
524af0d6 | 5291 | if (!gfc_copy_attr (&c->attr, ¤t_attr, NULL)) |
713485cc JW |
5292 | return MATCH_ERROR; |
5293 | ||
524af0d6 | 5294 | if (!gfc_add_external (&c->attr, NULL)) |
713485cc JW |
5295 | return MATCH_ERROR; |
5296 | ||
524af0d6 | 5297 | if (!gfc_add_proc (&c->attr, name, NULL)) |
713485cc JW |
5298 | return MATCH_ERROR; |
5299 | ||
2be03814 TB |
5300 | if (num == 1) |
5301 | c->tb = tb; | |
5302 | else | |
5303 | { | |
5304 | c->tb = XCNEW (gfc_typebound_proc); | |
5305 | c->tb->where = gfc_current_locus; | |
5306 | *c->tb = *tb; | |
5307 | } | |
90661f26 | 5308 | |
713485cc JW |
5309 | /* Set interface. */ |
5310 | if (proc_if != NULL) | |
5311 | { | |
5312 | c->ts.interface = proc_if; | |
5313 | c->attr.untyped = 1; | |
5314 | c->attr.if_source = IFSRC_IFBODY; | |
5315 | } | |
5316 | else if (ts.type != BT_UNKNOWN) | |
5317 | { | |
5318 | c->ts = ts; | |
5319 | c->ts.interface = gfc_new_symbol ("", gfc_current_ns); | |
d7fee03d | 5320 | c->ts.interface->result = c->ts.interface; |
713485cc | 5321 | c->ts.interface->ts = ts; |
d91909c0 | 5322 | c->ts.interface->attr.flavor = FL_PROCEDURE; |
713485cc | 5323 | c->ts.interface->attr.function = 1; |
d91909c0 | 5324 | c->attr.function = 1; |
713485cc JW |
5325 | c->attr.if_source = IFSRC_UNKNOWN; |
5326 | } | |
5327 | ||
5328 | if (gfc_match (" =>") == MATCH_YES) | |
5329 | { | |
80f95228 | 5330 | m = match_pointer_init (&initializer, 1); |
713485cc JW |
5331 | if (m != MATCH_YES) |
5332 | { | |
5333 | gfc_free_expr (initializer); | |
5334 | return m; | |
5335 | } | |
5336 | c->initializer = initializer; | |
5337 | } | |
5338 | ||
5339 | if (gfc_match_eos () == MATCH_YES) | |
5340 | return MATCH_YES; | |
5341 | if (gfc_match_char (',') != MATCH_YES) | |
5342 | goto syntax; | |
5343 | } | |
5344 | ||
5345 | syntax: | |
5346 | gfc_error ("Syntax error in procedure pointer component at %C"); | |
5347 | return MATCH_ERROR; | |
5348 | } | |
5349 | ||
5350 | ||
69773742 JW |
5351 | /* Match a PROCEDURE declaration inside an interface (R1206). */ |
5352 | ||
5353 | static match | |
5354 | match_procedure_in_interface (void) | |
5355 | { | |
5356 | match m; | |
5357 | gfc_symbol *sym; | |
5358 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
a6fcd41a | 5359 | locus old_locus; |
69773742 JW |
5360 | |
5361 | if (current_interface.type == INTERFACE_NAMELESS | |
5362 | || current_interface.type == INTERFACE_ABSTRACT) | |
5363 | { | |
5364 | gfc_error ("PROCEDURE at %C must be in a generic interface"); | |
5365 | return MATCH_ERROR; | |
5366 | } | |
5367 | ||
a6fcd41a TB |
5368 | /* Check if the F2008 optional double colon appears. */ |
5369 | gfc_gobble_whitespace (); | |
5370 | old_locus = gfc_current_locus; | |
5371 | if (gfc_match ("::") == MATCH_YES) | |
5372 | { | |
524af0d6 JB |
5373 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
5374 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
a6fcd41a TB |
5375 | return MATCH_ERROR; |
5376 | } | |
5377 | else | |
5378 | gfc_current_locus = old_locus; | |
5379 | ||
69773742 JW |
5380 | for(;;) |
5381 | { | |
5382 | m = gfc_match_name (name); | |
5383 | if (m == MATCH_NO) | |
5384 | goto syntax; | |
5385 | else if (m == MATCH_ERROR) | |
5386 | return m; | |
5387 | if (gfc_get_symbol (name, gfc_current_ns->parent, &sym)) | |
5388 | return MATCH_ERROR; | |
5389 | ||
524af0d6 | 5390 | if (!gfc_add_interface (sym)) |
69773742 JW |
5391 | return MATCH_ERROR; |
5392 | ||
69773742 JW |
5393 | if (gfc_match_eos () == MATCH_YES) |
5394 | break; | |
5395 | if (gfc_match_char (',') != MATCH_YES) | |
5396 | goto syntax; | |
5397 | } | |
5398 | ||
5399 | return MATCH_YES; | |
5400 | ||
5401 | syntax: | |
5402 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
5403 | return MATCH_ERROR; | |
5404 | } | |
5405 | ||
5406 | ||
5407 | /* General matcher for PROCEDURE declarations. */ | |
5408 | ||
30b608eb DK |
5409 | static match match_procedure_in_type (void); |
5410 | ||
69773742 JW |
5411 | match |
5412 | gfc_match_procedure (void) | |
5413 | { | |
5414 | match m; | |
5415 | ||
5416 | switch (gfc_current_state ()) | |
5417 | { | |
5418 | case COMP_NONE: | |
5419 | case COMP_PROGRAM: | |
5420 | case COMP_MODULE: | |
4668d6f9 | 5421 | case COMP_SUBMODULE: |
69773742 JW |
5422 | case COMP_SUBROUTINE: |
5423 | case COMP_FUNCTION: | |
3547d57e | 5424 | case COMP_BLOCK: |
69773742 JW |
5425 | m = match_procedure_decl (); |
5426 | break; | |
5427 | case COMP_INTERFACE: | |
5428 | m = match_procedure_in_interface (); | |
5429 | break; | |
5430 | case COMP_DERIVED: | |
713485cc JW |
5431 | m = match_ppc_decl (); |
5432 | break; | |
30b608eb DK |
5433 | case COMP_DERIVED_CONTAINS: |
5434 | m = match_procedure_in_type (); | |
5435 | break; | |
69773742 JW |
5436 | default: |
5437 | return MATCH_NO; | |
5438 | } | |
5439 | ||
5440 | if (m != MATCH_YES) | |
5441 | return m; | |
5442 | ||
524af0d6 | 5443 | if (!gfc_notify_std (GFC_STD_F2003, "PROCEDURE statement at %C")) |
69773742 JW |
5444 | return MATCH_ERROR; |
5445 | ||
5446 | return m; | |
5447 | } | |
5448 | ||
5449 | ||
c3005b0f DK |
5450 | /* Warn if a matched procedure has the same name as an intrinsic; this is |
5451 | simply a wrapper around gfc_warn_intrinsic_shadow that interprets the current | |
5452 | parser-state-stack to find out whether we're in a module. */ | |
5453 | ||
5454 | static void | |
73e42eef | 5455 | do_warn_intrinsic_shadow (const gfc_symbol* sym, bool func) |
c3005b0f DK |
5456 | { |
5457 | bool in_module; | |
5458 | ||
5459 | in_module = (gfc_state_stack->previous | |
4668d6f9 PT |
5460 | && (gfc_state_stack->previous->state == COMP_MODULE |
5461 | || gfc_state_stack->previous->state == COMP_SUBMODULE)); | |
c3005b0f DK |
5462 | |
5463 | gfc_warn_intrinsic_shadow (sym, in_module, func); | |
5464 | } | |
5465 | ||
5466 | ||
6de9cd9a DN |
5467 | /* Match a function declaration. */ |
5468 | ||
5469 | match | |
5470 | gfc_match_function_decl (void) | |
5471 | { | |
5472 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5473 | gfc_symbol *sym, *result; | |
5474 | locus old_loc; | |
5475 | match m; | |
a8b3b0b6 | 5476 | match suffix_match; |
f5acf0f2 | 5477 | match found_match; /* Status returned by match func. */ |
6de9cd9a DN |
5478 | |
5479 | if (gfc_current_state () != COMP_NONE | |
5480 | && gfc_current_state () != COMP_INTERFACE | |
5481 | && gfc_current_state () != COMP_CONTAINS) | |
5482 | return MATCH_NO; | |
5483 | ||
5484 | gfc_clear_ts (¤t_ts); | |
5485 | ||
63645982 | 5486 | old_loc = gfc_current_locus; |
6de9cd9a | 5487 | |
1c8bcdf7 | 5488 | m = gfc_match_prefix (¤t_ts); |
6de9cd9a DN |
5489 | if (m != MATCH_YES) |
5490 | { | |
63645982 | 5491 | gfc_current_locus = old_loc; |
6de9cd9a DN |
5492 | return m; |
5493 | } | |
5494 | ||
5495 | if (gfc_match ("function% %n", name) != MATCH_YES) | |
5496 | { | |
63645982 | 5497 | gfc_current_locus = old_loc; |
6de9cd9a DN |
5498 | return MATCH_NO; |
5499 | } | |
4668d6f9 | 5500 | |
1a492601 | 5501 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 5502 | return MATCH_ERROR; |
3070bab4 | 5503 | |
524af0d6 | 5504 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
5505 | sym = sym->result; |
5506 | ||
4668d6f9 PT |
5507 | if (current_attr.module_procedure) |
5508 | sym->attr.module_procedure = 1; | |
5509 | ||
6de9cd9a DN |
5510 | gfc_new_block = sym; |
5511 | ||
5512 | m = gfc_match_formal_arglist (sym, 0, 0); | |
5513 | if (m == MATCH_NO) | |
2b9a33ae TS |
5514 | { |
5515 | gfc_error ("Expected formal argument list in function " | |
636dff67 | 5516 | "definition at %C"); |
2b9a33ae TS |
5517 | m = MATCH_ERROR; |
5518 | goto cleanup; | |
5519 | } | |
6de9cd9a DN |
5520 | else if (m == MATCH_ERROR) |
5521 | goto cleanup; | |
5522 | ||
5523 | result = NULL; | |
5524 | ||
a8b3b0b6 CR |
5525 | /* According to the draft, the bind(c) and result clause can |
5526 | come in either order after the formal_arg_list (i.e., either | |
5527 | can be first, both can exist together or by themselves or neither | |
5528 | one). Therefore, the match_result can't match the end of the | |
5529 | string, and check for the bind(c) or result clause in either order. */ | |
5530 | found_match = gfc_match_eos (); | |
5531 | ||
5532 | /* Make sure that it isn't already declared as BIND(C). If it is, it | |
5533 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5534 | not allowed for procedures. */ | |
5535 | if (sym->attr.is_bind_c == 1) | |
5536 | { | |
5537 | sym->attr.is_bind_c = 0; | |
5538 | if (sym->old_symbol != NULL) | |
5539 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5540 | "variables or common blocks", | |
5541 | &(sym->old_symbol->declared_at)); | |
5542 | else | |
5543 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5544 | "variables or common blocks", &gfc_current_locus); | |
6de9cd9a DN |
5545 | } |
5546 | ||
a8b3b0b6 | 5547 | if (found_match != MATCH_YES) |
6de9cd9a | 5548 | { |
a8b3b0b6 CR |
5549 | /* If we haven't found the end-of-statement, look for a suffix. */ |
5550 | suffix_match = gfc_match_suffix (sym, &result); | |
5551 | if (suffix_match == MATCH_YES) | |
5552 | /* Need to get the eos now. */ | |
5553 | found_match = gfc_match_eos (); | |
5554 | else | |
5555 | found_match = suffix_match; | |
6de9cd9a DN |
5556 | } |
5557 | ||
a8b3b0b6 CR |
5558 | if(found_match != MATCH_YES) |
5559 | m = MATCH_ERROR; | |
6de9cd9a DN |
5560 | else |
5561 | { | |
a8b3b0b6 CR |
5562 | /* Make changes to the symbol. */ |
5563 | m = MATCH_ERROR; | |
f5acf0f2 | 5564 | |
524af0d6 | 5565 | if (!gfc_add_function (&sym->attr, sym->name, NULL)) |
a8b3b0b6 | 5566 | goto cleanup; |
f5acf0f2 | 5567 | |
524af0d6 JB |
5568 | if (!gfc_missing_attr (&sym->attr, NULL) |
5569 | || !copy_prefix (&sym->attr, &sym->declared_at)) | |
a8b3b0b6 | 5570 | goto cleanup; |
6de9cd9a | 5571 | |
a99d95a2 | 5572 | /* Delay matching the function characteristics until after the |
1c8bcdf7 | 5573 | specification block by signalling kind=-1. */ |
a99d95a2 PT |
5574 | sym->declared_at = old_loc; |
5575 | if (current_ts.type != BT_UNKNOWN) | |
5576 | current_ts.kind = -1; | |
5577 | else | |
5578 | current_ts.kind = 0; | |
1c8bcdf7 | 5579 | |
a8b3b0b6 CR |
5580 | if (result == NULL) |
5581 | { | |
6de7294f | 5582 | if (current_ts.type != BT_UNKNOWN |
524af0d6 | 5583 | && !gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
6de7294f | 5584 | goto cleanup; |
a8b3b0b6 CR |
5585 | sym->result = sym; |
5586 | } | |
5587 | else | |
5588 | { | |
6de7294f | 5589 | if (current_ts.type != BT_UNKNOWN |
524af0d6 | 5590 | && !gfc_add_type (result, ¤t_ts, &gfc_current_locus)) |
6de7294f | 5591 | goto cleanup; |
a8b3b0b6 CR |
5592 | sym->result = result; |
5593 | } | |
5594 | ||
c3005b0f | 5595 | /* Warn if this procedure has the same name as an intrinsic. */ |
73e42eef | 5596 | do_warn_intrinsic_shadow (sym, true); |
c3005b0f | 5597 | |
a8b3b0b6 CR |
5598 | return MATCH_YES; |
5599 | } | |
6de9cd9a DN |
5600 | |
5601 | cleanup: | |
63645982 | 5602 | gfc_current_locus = old_loc; |
6de9cd9a DN |
5603 | return m; |
5604 | } | |
5605 | ||
636dff67 SK |
5606 | |
5607 | /* This is mostly a copy of parse.c(add_global_procedure) but modified to | |
5608 | pass the name of the entry, rather than the gfc_current_block name, and | |
5609 | to return false upon finding an existing global entry. */ | |
68ea355b PT |
5610 | |
5611 | static bool | |
3a43b5b3 TB |
5612 | add_global_entry (const char *name, const char *binding_label, bool sub, |
5613 | locus *where) | |
68ea355b PT |
5614 | { |
5615 | gfc_gsymbol *s; | |
32e8bb8e | 5616 | enum gfc_symbol_type type; |
68ea355b | 5617 | |
7389bce6 | 5618 | type = sub ? GSYM_SUBROUTINE : GSYM_FUNCTION; |
68ea355b | 5619 | |
f11de7c5 TB |
5620 | /* Only in Fortran 2003: For procedures with a binding label also the Fortran |
5621 | name is a global identifier. */ | |
5622 | if (!binding_label || gfc_notification_std (GFC_STD_F2008)) | |
68ea355b | 5623 | { |
f11de7c5 TB |
5624 | s = gfc_get_gsymbol (name); |
5625 | ||
5626 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
5627 | { | |
3a43b5b3 | 5628 | gfc_global_used (s, where); |
f11de7c5 TB |
5629 | return false; |
5630 | } | |
5631 | else | |
5632 | { | |
5633 | s->type = type; | |
77f8682b | 5634 | s->sym_name = name; |
3a43b5b3 | 5635 | s->where = *where; |
f11de7c5 TB |
5636 | s->defined = 1; |
5637 | s->ns = gfc_current_ns; | |
5638 | } | |
68ea355b | 5639 | } |
f11de7c5 TB |
5640 | |
5641 | /* Don't add the symbol multiple times. */ | |
5642 | if (binding_label | |
5643 | && (!gfc_notification_std (GFC_STD_F2008) | |
5644 | || strcmp (name, binding_label) != 0)) | |
5645 | { | |
5646 | s = gfc_get_gsymbol (binding_label); | |
5647 | ||
5648 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
5649 | { | |
3a43b5b3 | 5650 | gfc_global_used (s, where); |
f11de7c5 TB |
5651 | return false; |
5652 | } | |
5653 | else | |
5654 | { | |
5655 | s->type = type; | |
77f8682b | 5656 | s->sym_name = name; |
f11de7c5 | 5657 | s->binding_label = binding_label; |
3a43b5b3 | 5658 | s->where = *where; |
f11de7c5 TB |
5659 | s->defined = 1; |
5660 | s->ns = gfc_current_ns; | |
5661 | } | |
5662 | } | |
5663 | ||
5664 | return true; | |
68ea355b | 5665 | } |
6de9cd9a | 5666 | |
636dff67 | 5667 | |
6de9cd9a DN |
5668 | /* Match an ENTRY statement. */ |
5669 | ||
5670 | match | |
5671 | gfc_match_entry (void) | |
5672 | { | |
3d79abbd PB |
5673 | gfc_symbol *proc; |
5674 | gfc_symbol *result; | |
5675 | gfc_symbol *entry; | |
6de9cd9a DN |
5676 | char name[GFC_MAX_SYMBOL_LEN + 1]; |
5677 | gfc_compile_state state; | |
5678 | match m; | |
3d79abbd | 5679 | gfc_entry_list *el; |
c96cfa49 | 5680 | locus old_loc; |
1a492601 | 5681 | bool module_procedure; |
bc3e7a8c TB |
5682 | char peek_char; |
5683 | match is_bind_c; | |
6de9cd9a DN |
5684 | |
5685 | m = gfc_match_name (name); | |
5686 | if (m != MATCH_YES) | |
5687 | return m; | |
5688 | ||
524af0d6 | 5689 | if (!gfc_notify_std (GFC_STD_F2008_OBS, "ENTRY statement at %C")) |
58fc89f6 TB |
5690 | return MATCH_ERROR; |
5691 | ||
3d79abbd | 5692 | state = gfc_current_state (); |
4c93c95a | 5693 | if (state != COMP_SUBROUTINE && state != COMP_FUNCTION) |
3d79abbd | 5694 | { |
4c93c95a FXC |
5695 | switch (state) |
5696 | { | |
5697 | case COMP_PROGRAM: | |
5698 | gfc_error ("ENTRY statement at %C cannot appear within a PROGRAM"); | |
5699 | break; | |
5700 | case COMP_MODULE: | |
5701 | gfc_error ("ENTRY statement at %C cannot appear within a MODULE"); | |
5702 | break; | |
4668d6f9 PT |
5703 | case COMP_SUBMODULE: |
5704 | gfc_error ("ENTRY statement at %C cannot appear within a SUBMODULE"); | |
5705 | break; | |
4c93c95a | 5706 | case COMP_BLOCK_DATA: |
636dff67 SK |
5707 | gfc_error ("ENTRY statement at %C cannot appear within " |
5708 | "a BLOCK DATA"); | |
4c93c95a FXC |
5709 | break; |
5710 | case COMP_INTERFACE: | |
636dff67 SK |
5711 | gfc_error ("ENTRY statement at %C cannot appear within " |
5712 | "an INTERFACE"); | |
4c93c95a FXC |
5713 | break; |
5714 | case COMP_DERIVED: | |
636dff67 SK |
5715 | gfc_error ("ENTRY statement at %C cannot appear within " |
5716 | "a DERIVED TYPE block"); | |
4c93c95a FXC |
5717 | break; |
5718 | case COMP_IF: | |
636dff67 SK |
5719 | gfc_error ("ENTRY statement at %C cannot appear within " |
5720 | "an IF-THEN block"); | |
4c93c95a FXC |
5721 | break; |
5722 | case COMP_DO: | |
8c6a85e3 | 5723 | case COMP_DO_CONCURRENT: |
636dff67 SK |
5724 | gfc_error ("ENTRY statement at %C cannot appear within " |
5725 | "a DO block"); | |
4c93c95a FXC |
5726 | break; |
5727 | case COMP_SELECT: | |
636dff67 SK |
5728 | gfc_error ("ENTRY statement at %C cannot appear within " |
5729 | "a SELECT block"); | |
4c93c95a FXC |
5730 | break; |
5731 | case COMP_FORALL: | |
636dff67 SK |
5732 | gfc_error ("ENTRY statement at %C cannot appear within " |
5733 | "a FORALL block"); | |
4c93c95a FXC |
5734 | break; |
5735 | case COMP_WHERE: | |
636dff67 SK |
5736 | gfc_error ("ENTRY statement at %C cannot appear within " |
5737 | "a WHERE block"); | |
4c93c95a FXC |
5738 | break; |
5739 | case COMP_CONTAINS: | |
636dff67 SK |
5740 | gfc_error ("ENTRY statement at %C cannot appear within " |
5741 | "a contained subprogram"); | |
4c93c95a FXC |
5742 | break; |
5743 | default: | |
fce523bf | 5744 | gfc_error ("Unexpected ENTRY statement at %C"); |
4c93c95a | 5745 | } |
3d79abbd PB |
5746 | return MATCH_ERROR; |
5747 | } | |
5748 | ||
1a492601 | 5749 | module_procedure = gfc_current_ns->parent != NULL |
636dff67 SK |
5750 | && gfc_current_ns->parent->proc_name |
5751 | && gfc_current_ns->parent->proc_name->attr.flavor | |
5752 | == FL_MODULE; | |
1a492601 | 5753 | |
3d79abbd PB |
5754 | if (gfc_current_ns->parent != NULL |
5755 | && gfc_current_ns->parent->proc_name | |
1a492601 | 5756 | && !module_procedure) |
3d79abbd PB |
5757 | { |
5758 | gfc_error("ENTRY statement at %C cannot appear in a " | |
5759 | "contained procedure"); | |
5760 | return MATCH_ERROR; | |
5761 | } | |
5762 | ||
1a492601 PT |
5763 | /* Module function entries need special care in get_proc_name |
5764 | because previous references within the function will have | |
5765 | created symbols attached to the current namespace. */ | |
5766 | if (get_proc_name (name, &entry, | |
5767 | gfc_current_ns->parent != NULL | |
ecd3b73c | 5768 | && module_procedure)) |
6de9cd9a DN |
5769 | return MATCH_ERROR; |
5770 | ||
3d79abbd PB |
5771 | proc = gfc_current_block (); |
5772 | ||
bc3e7a8c TB |
5773 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
5774 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5775 | not allowed for procedures. */ | |
5776 | if (entry->attr.is_bind_c == 1) | |
5777 | { | |
5778 | entry->attr.is_bind_c = 0; | |
5779 | if (entry->old_symbol != NULL) | |
5780 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5781 | "variables or common blocks", | |
5782 | &(entry->old_symbol->declared_at)); | |
5783 | else | |
5784 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5785 | "variables or common blocks", &gfc_current_locus); | |
5786 | } | |
f5acf0f2 | 5787 | |
bc3e7a8c TB |
5788 | /* Check what next non-whitespace character is so we can tell if there |
5789 | is the required parens if we have a BIND(C). */ | |
3a43b5b3 | 5790 | old_loc = gfc_current_locus; |
bc3e7a8c | 5791 | gfc_gobble_whitespace (); |
8fc541d3 | 5792 | peek_char = gfc_peek_ascii_char (); |
bc3e7a8c | 5793 | |
3d79abbd | 5794 | if (state == COMP_SUBROUTINE) |
6de9cd9a | 5795 | { |
6de9cd9a DN |
5796 | m = gfc_match_formal_arglist (entry, 0, 1); |
5797 | if (m != MATCH_YES) | |
5798 | return MATCH_ERROR; | |
5799 | ||
1eabf70a TB |
5800 | /* Call gfc_match_bind_c with allow_binding_name = true as ENTRY can |
5801 | never be an internal procedure. */ | |
5802 | is_bind_c = gfc_match_bind_c (entry, true); | |
bc3e7a8c TB |
5803 | if (is_bind_c == MATCH_ERROR) |
5804 | return MATCH_ERROR; | |
5805 | if (is_bind_c == MATCH_YES) | |
5806 | { | |
5807 | if (peek_char != '(') | |
5808 | { | |
5809 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
5810 | return MATCH_ERROR; | |
5811 | } | |
524af0d6 JB |
5812 | if (!gfc_add_is_bind_c (&(entry->attr), entry->name, |
5813 | &(entry->declared_at), 1)) | |
bc3e7a8c TB |
5814 | return MATCH_ERROR; |
5815 | } | |
5816 | ||
f11de7c5 | 5817 | if (!gfc_current_ns->parent |
3a43b5b3 TB |
5818 | && !add_global_entry (name, entry->binding_label, true, |
5819 | &old_loc)) | |
f11de7c5 TB |
5820 | return MATCH_ERROR; |
5821 | ||
5822 | /* An entry in a subroutine. */ | |
524af0d6 JB |
5823 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
5824 | || !gfc_add_subroutine (&entry->attr, entry->name, NULL)) | |
6de9cd9a | 5825 | return MATCH_ERROR; |
3d79abbd PB |
5826 | } |
5827 | else | |
5828 | { | |
c96cfa49 | 5829 | /* An entry in a function. |
636dff67 SK |
5830 | We need to take special care because writing |
5831 | ENTRY f() | |
5832 | as | |
5833 | ENTRY f | |
5834 | is allowed, whereas | |
5835 | ENTRY f() RESULT (r) | |
5836 | can't be written as | |
5837 | ENTRY f RESULT (r). */ | |
c96cfa49 TS |
5838 | if (gfc_match_eos () == MATCH_YES) |
5839 | { | |
5840 | gfc_current_locus = old_loc; | |
5841 | /* Match the empty argument list, and add the interface to | |
5842 | the symbol. */ | |
5843 | m = gfc_match_formal_arglist (entry, 0, 1); | |
5844 | } | |
5845 | else | |
5846 | m = gfc_match_formal_arglist (entry, 0, 0); | |
5847 | ||
6de9cd9a DN |
5848 | if (m != MATCH_YES) |
5849 | return MATCH_ERROR; | |
5850 | ||
6de9cd9a DN |
5851 | result = NULL; |
5852 | ||
5853 | if (gfc_match_eos () == MATCH_YES) | |
5854 | { | |
524af0d6 JB |
5855 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
5856 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
6de9cd9a DN |
5857 | return MATCH_ERROR; |
5858 | ||
d198b59a | 5859 | entry->result = entry; |
6de9cd9a DN |
5860 | } |
5861 | else | |
5862 | { | |
bc3e7a8c | 5863 | m = gfc_match_suffix (entry, &result); |
6de9cd9a DN |
5864 | if (m == MATCH_NO) |
5865 | gfc_syntax_error (ST_ENTRY); | |
5866 | if (m != MATCH_YES) | |
5867 | return MATCH_ERROR; | |
5868 | ||
bc3e7a8c TB |
5869 | if (result) |
5870 | { | |
524af0d6 JB |
5871 | if (!gfc_add_result (&result->attr, result->name, NULL) |
5872 | || !gfc_add_entry (&entry->attr, result->name, NULL) | |
5873 | || !gfc_add_function (&entry->attr, result->name, NULL)) | |
bc3e7a8c TB |
5874 | return MATCH_ERROR; |
5875 | entry->result = result; | |
5876 | } | |
5877 | else | |
5878 | { | |
524af0d6 JB |
5879 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
5880 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
bc3e7a8c TB |
5881 | return MATCH_ERROR; |
5882 | entry->result = entry; | |
5883 | } | |
6de9cd9a | 5884 | } |
f11de7c5 TB |
5885 | |
5886 | if (!gfc_current_ns->parent | |
3a43b5b3 TB |
5887 | && !add_global_entry (name, entry->binding_label, false, |
5888 | &old_loc)) | |
f11de7c5 | 5889 | return MATCH_ERROR; |
6de9cd9a DN |
5890 | } |
5891 | ||
5892 | if (gfc_match_eos () != MATCH_YES) | |
5893 | { | |
5894 | gfc_syntax_error (ST_ENTRY); | |
5895 | return MATCH_ERROR; | |
5896 | } | |
5897 | ||
3d79abbd PB |
5898 | entry->attr.recursive = proc->attr.recursive; |
5899 | entry->attr.elemental = proc->attr.elemental; | |
5900 | entry->attr.pure = proc->attr.pure; | |
6de9cd9a | 5901 | |
3d79abbd PB |
5902 | el = gfc_get_entry_list (); |
5903 | el->sym = entry; | |
5904 | el->next = gfc_current_ns->entries; | |
5905 | gfc_current_ns->entries = el; | |
5906 | if (el->next) | |
5907 | el->id = el->next->id + 1; | |
5908 | else | |
5909 | el->id = 1; | |
6de9cd9a | 5910 | |
3d79abbd PB |
5911 | new_st.op = EXEC_ENTRY; |
5912 | new_st.ext.entry = el; | |
5913 | ||
5914 | return MATCH_YES; | |
6de9cd9a DN |
5915 | } |
5916 | ||
5917 | ||
5918 | /* Match a subroutine statement, including optional prefixes. */ | |
5919 | ||
5920 | match | |
5921 | gfc_match_subroutine (void) | |
5922 | { | |
5923 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5924 | gfc_symbol *sym; | |
5925 | match m; | |
a8b3b0b6 CR |
5926 | match is_bind_c; |
5927 | char peek_char; | |
1eabf70a | 5928 | bool allow_binding_name; |
6de9cd9a DN |
5929 | |
5930 | if (gfc_current_state () != COMP_NONE | |
5931 | && gfc_current_state () != COMP_INTERFACE | |
5932 | && gfc_current_state () != COMP_CONTAINS) | |
5933 | return MATCH_NO; | |
5934 | ||
1c8bcdf7 | 5935 | m = gfc_match_prefix (NULL); |
6de9cd9a DN |
5936 | if (m != MATCH_YES) |
5937 | return m; | |
5938 | ||
5939 | m = gfc_match ("subroutine% %n", name); | |
5940 | if (m != MATCH_YES) | |
5941 | return m; | |
5942 | ||
1a492601 | 5943 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 5944 | return MATCH_ERROR; |
3070bab4 | 5945 | |
7fcd5ad5 | 5946 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if |
1cc0e193 | 5947 | the symbol existed before. */ |
7fcd5ad5 TB |
5948 | sym->declared_at = gfc_current_locus; |
5949 | ||
4668d6f9 PT |
5950 | if (current_attr.module_procedure) |
5951 | sym->attr.module_procedure = 1; | |
5952 | ||
524af0d6 | 5953 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
5954 | sym = sym->result; |
5955 | ||
6de9cd9a DN |
5956 | gfc_new_block = sym; |
5957 | ||
a8b3b0b6 | 5958 | /* Check what next non-whitespace character is so we can tell if there |
bc3e7a8c | 5959 | is the required parens if we have a BIND(C). */ |
a8b3b0b6 | 5960 | gfc_gobble_whitespace (); |
8fc541d3 | 5961 | peek_char = gfc_peek_ascii_char (); |
f5acf0f2 | 5962 | |
524af0d6 | 5963 | if (!gfc_add_subroutine (&sym->attr, sym->name, NULL)) |
6de9cd9a DN |
5964 | return MATCH_ERROR; |
5965 | ||
5966 | if (gfc_match_formal_arglist (sym, 0, 1) != MATCH_YES) | |
5967 | return MATCH_ERROR; | |
5968 | ||
a8b3b0b6 CR |
5969 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
5970 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5971 | not allowed for procedures. */ | |
5972 | if (sym->attr.is_bind_c == 1) | |
5973 | { | |
5974 | sym->attr.is_bind_c = 0; | |
5975 | if (sym->old_symbol != NULL) | |
5976 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5977 | "variables or common blocks", | |
5978 | &(sym->old_symbol->declared_at)); | |
5979 | else | |
5980 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5981 | "variables or common blocks", &gfc_current_locus); | |
5982 | } | |
1eabf70a TB |
5983 | |
5984 | /* C binding names are not allowed for internal procedures. */ | |
5985 | if (gfc_current_state () == COMP_CONTAINS | |
5986 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
5987 | allow_binding_name = false; | |
5988 | else | |
5989 | allow_binding_name = true; | |
5990 | ||
a8b3b0b6 CR |
5991 | /* Here, we are just checking if it has the bind(c) attribute, and if |
5992 | so, then we need to make sure it's all correct. If it doesn't, | |
5993 | we still need to continue matching the rest of the subroutine line. */ | |
1eabf70a | 5994 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
5995 | if (is_bind_c == MATCH_ERROR) |
5996 | { | |
5997 | /* There was an attempt at the bind(c), but it was wrong. An | |
5998 | error message should have been printed w/in the gfc_match_bind_c | |
5999 | so here we'll just return the MATCH_ERROR. */ | |
6000 | return MATCH_ERROR; | |
6001 | } | |
6002 | ||
6003 | if (is_bind_c == MATCH_YES) | |
6004 | { | |
1eabf70a | 6005 | /* The following is allowed in the Fortran 2008 draft. */ |
01f4fff1 | 6006 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 6007 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
524af0d6 JB |
6008 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
6009 | "at %L may not be specified for an internal " | |
6010 | "procedure", &gfc_current_locus)) | |
1eabf70a TB |
6011 | return MATCH_ERROR; |
6012 | ||
a8b3b0b6 CR |
6013 | if (peek_char != '(') |
6014 | { | |
6015 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
6016 | return MATCH_ERROR; | |
6017 | } | |
524af0d6 JB |
6018 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, |
6019 | &(sym->declared_at), 1)) | |
a8b3b0b6 CR |
6020 | return MATCH_ERROR; |
6021 | } | |
f5acf0f2 | 6022 | |
6de9cd9a DN |
6023 | if (gfc_match_eos () != MATCH_YES) |
6024 | { | |
6025 | gfc_syntax_error (ST_SUBROUTINE); | |
6026 | return MATCH_ERROR; | |
6027 | } | |
6028 | ||
524af0d6 | 6029 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
6de9cd9a DN |
6030 | return MATCH_ERROR; |
6031 | ||
c3005b0f | 6032 | /* Warn if it has the same name as an intrinsic. */ |
73e42eef | 6033 | do_warn_intrinsic_shadow (sym, false); |
c3005b0f | 6034 | |
6de9cd9a DN |
6035 | return MATCH_YES; |
6036 | } | |
6037 | ||
6038 | ||
3b37ccd4 FXC |
6039 | /* Check that the NAME identifier in a BIND attribute or statement |
6040 | is conform to C identifier rules. */ | |
6041 | ||
6042 | match | |
6043 | check_bind_name_identifier (char **name) | |
6044 | { | |
6045 | char *n = *name, *p; | |
6046 | ||
6047 | /* Remove leading spaces. */ | |
6048 | while (*n == ' ') | |
6049 | n++; | |
6050 | ||
6051 | /* On an empty string, free memory and set name to NULL. */ | |
6052 | if (*n == '\0') | |
6053 | { | |
6054 | free (*name); | |
6055 | *name = NULL; | |
6056 | return MATCH_YES; | |
6057 | } | |
6058 | ||
6059 | /* Remove trailing spaces. */ | |
6060 | p = n + strlen(n) - 1; | |
6061 | while (*p == ' ') | |
6062 | *(p--) = '\0'; | |
6063 | ||
6064 | /* Insert the identifier into the symbol table. */ | |
6065 | p = xstrdup (n); | |
6066 | free (*name); | |
6067 | *name = p; | |
6068 | ||
6069 | /* Now check that identifier is valid under C rules. */ | |
6070 | if (ISDIGIT (*p)) | |
6071 | { | |
6072 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
6073 | return MATCH_ERROR; | |
6074 | } | |
6075 | ||
6076 | for (; *p; p++) | |
6077 | if (!(ISALNUM (*p) || *p == '_' || *p == '$')) | |
6078 | { | |
6079 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
6080 | return MATCH_ERROR; | |
6081 | } | |
6082 | ||
6083 | return MATCH_YES; | |
6084 | } | |
6085 | ||
6086 | ||
a8b3b0b6 CR |
6087 | /* Match a BIND(C) specifier, with the optional 'name=' specifier if |
6088 | given, and set the binding label in either the given symbol (if not | |
86bf520d | 6089 | NULL), or in the current_ts. The symbol may be NULL because we may |
a8b3b0b6 CR |
6090 | encounter the BIND(C) before the declaration itself. Return |
6091 | MATCH_NO if what we're looking at isn't a BIND(C) specifier, | |
6092 | MATCH_ERROR if it is a BIND(C) clause but an error was encountered, | |
6093 | or MATCH_YES if the specifier was correct and the binding label and | |
6094 | bind(c) fields were set correctly for the given symbol or the | |
1eabf70a TB |
6095 | current_ts. If allow_binding_name is false, no binding name may be |
6096 | given. */ | |
a8b3b0b6 CR |
6097 | |
6098 | match | |
1eabf70a | 6099 | gfc_match_bind_c (gfc_symbol *sym, bool allow_binding_name) |
a8b3b0b6 | 6100 | { |
3b37ccd4 FXC |
6101 | char *binding_label = NULL; |
6102 | gfc_expr *e = NULL; | |
a8b3b0b6 | 6103 | |
f5acf0f2 | 6104 | /* Initialize the flag that specifies whether we encountered a NAME= |
a8b3b0b6 CR |
6105 | specifier or not. */ |
6106 | has_name_equals = 0; | |
6107 | ||
a8b3b0b6 CR |
6108 | /* This much we have to be able to match, in this order, if |
6109 | there is a bind(c) label. */ | |
6110 | if (gfc_match (" bind ( c ") != MATCH_YES) | |
6111 | return MATCH_NO; | |
6112 | ||
6113 | /* Now see if there is a binding label, or if we've reached the | |
6114 | end of the bind(c) attribute without one. */ | |
6115 | if (gfc_match_char (',') == MATCH_YES) | |
6116 | { | |
6117 | if (gfc_match (" name = ") != MATCH_YES) | |
6118 | { | |
6119 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
6120 | "at %C"); | |
6121 | /* should give an error message here */ | |
6122 | return MATCH_ERROR; | |
6123 | } | |
6124 | ||
6125 | has_name_equals = 1; | |
6126 | ||
3b37ccd4 FXC |
6127 | if (gfc_match_init_expr (&e) != MATCH_YES) |
6128 | { | |
6129 | gfc_free_expr (e); | |
6130 | return MATCH_ERROR; | |
6131 | } | |
f5acf0f2 | 6132 | |
3b37ccd4 | 6133 | if (!gfc_simplify_expr(e, 0)) |
a8b3b0b6 | 6134 | { |
3b37ccd4 FXC |
6135 | gfc_error ("NAME= specifier at %C should be a constant expression"); |
6136 | gfc_free_expr (e); | |
6137 | return MATCH_ERROR; | |
a8b3b0b6 | 6138 | } |
3b37ccd4 FXC |
6139 | |
6140 | if (e->expr_type != EXPR_CONSTANT || e->ts.type != BT_CHARACTER | |
6141 | || e->ts.kind != gfc_default_character_kind || e->rank != 0) | |
a8b3b0b6 | 6142 | { |
3b37ccd4 FXC |
6143 | gfc_error ("NAME= specifier at %C should be a scalar of " |
6144 | "default character kind"); | |
6145 | gfc_free_expr(e); | |
6146 | return MATCH_ERROR; | |
a8b3b0b6 | 6147 | } |
3b37ccd4 FXC |
6148 | |
6149 | // Get a C string from the Fortran string constant | |
6150 | binding_label = gfc_widechar_to_char (e->value.character.string, | |
6151 | e->value.character.length); | |
6152 | gfc_free_expr(e); | |
6153 | ||
6154 | // Check that it is valid (old gfc_match_name_C) | |
6155 | if (check_bind_name_identifier (&binding_label) != MATCH_YES) | |
6156 | return MATCH_ERROR; | |
6157 | } | |
a8b3b0b6 CR |
6158 | |
6159 | /* Get the required right paren. */ | |
6160 | if (gfc_match_char (')') != MATCH_YES) | |
6161 | { | |
6162 | gfc_error ("Missing closing paren for binding label at %C"); | |
6163 | return MATCH_ERROR; | |
6164 | } | |
6165 | ||
1eabf70a TB |
6166 | if (has_name_equals && !allow_binding_name) |
6167 | { | |
6168 | gfc_error ("No binding name is allowed in BIND(C) at %C"); | |
6169 | return MATCH_ERROR; | |
6170 | } | |
6171 | ||
6172 | if (has_name_equals && sym != NULL && sym->attr.dummy) | |
6173 | { | |
6174 | gfc_error ("For dummy procedure %s, no binding name is " | |
6175 | "allowed in BIND(C) at %C", sym->name); | |
6176 | return MATCH_ERROR; | |
6177 | } | |
6178 | ||
6179 | ||
a8b3b0b6 CR |
6180 | /* Save the binding label to the symbol. If sym is null, we're |
6181 | probably matching the typespec attributes of a declaration and | |
6182 | haven't gotten the name yet, and therefore, no symbol yet. */ | |
62603fae | 6183 | if (binding_label) |
a8b3b0b6 CR |
6184 | { |
6185 | if (sym != NULL) | |
62603fae | 6186 | sym->binding_label = binding_label; |
a8b3b0b6 | 6187 | else |
62603fae | 6188 | curr_binding_label = binding_label; |
a8b3b0b6 | 6189 | } |
1eabf70a | 6190 | else if (allow_binding_name) |
a8b3b0b6 CR |
6191 | { |
6192 | /* No binding label, but if symbol isn't null, we | |
1eabf70a TB |
6193 | can set the label for it here. |
6194 | If name="" or allow_binding_name is false, no C binding name is | |
1cc0e193 | 6195 | created. */ |
a8b3b0b6 | 6196 | if (sym != NULL && sym->name != NULL && has_name_equals == 0) |
62603fae | 6197 | sym->binding_label = IDENTIFIER_POINTER (get_identifier (sym->name)); |
a8b3b0b6 | 6198 | } |
9e1d712c | 6199 | |
129d15a3 JW |
6200 | if (has_name_equals && gfc_current_state () == COMP_INTERFACE |
6201 | && current_interface.type == INTERFACE_ABSTRACT) | |
9e1d712c TB |
6202 | { |
6203 | gfc_error ("NAME not allowed on BIND(C) for ABSTRACT INTERFACE at %C"); | |
6204 | return MATCH_ERROR; | |
6205 | } | |
6206 | ||
a8b3b0b6 CR |
6207 | return MATCH_YES; |
6208 | } | |
6209 | ||
6210 | ||
1f2959f0 | 6211 | /* Return nonzero if we're currently compiling a contained procedure. */ |
ddc9ce91 TS |
6212 | |
6213 | static int | |
6214 | contained_procedure (void) | |
6215 | { | |
083de129 | 6216 | gfc_state_data *s = gfc_state_stack; |
ddc9ce91 | 6217 | |
083de129 TB |
6218 | if ((s->state == COMP_SUBROUTINE || s->state == COMP_FUNCTION) |
6219 | && s->previous != NULL && s->previous->state == COMP_CONTAINS) | |
6220 | return 1; | |
ddc9ce91 TS |
6221 | |
6222 | return 0; | |
6223 | } | |
6224 | ||
d51347f9 | 6225 | /* Set the kind of each enumerator. The kind is selected such that it is |
25d8f0a2 TS |
6226 | interoperable with the corresponding C enumeration type, making |
6227 | sure that -fshort-enums is honored. */ | |
6228 | ||
6229 | static void | |
6230 | set_enum_kind(void) | |
6231 | { | |
6232 | enumerator_history *current_history = NULL; | |
6233 | int kind; | |
6234 | int i; | |
6235 | ||
6236 | if (max_enum == NULL || enum_history == NULL) | |
6237 | return; | |
6238 | ||
cab129d1 | 6239 | if (!flag_short_enums) |
d51347f9 TB |
6240 | return; |
6241 | ||
25d8f0a2 TS |
6242 | i = 0; |
6243 | do | |
6244 | { | |
6245 | kind = gfc_integer_kinds[i++].kind; | |
6246 | } | |
d51347f9 | 6247 | while (kind < gfc_c_int_kind |
25d8f0a2 TS |
6248 | && gfc_check_integer_range (max_enum->initializer->value.integer, |
6249 | kind) != ARITH_OK); | |
6250 | ||
6251 | current_history = enum_history; | |
6252 | while (current_history != NULL) | |
6253 | { | |
6254 | current_history->sym->ts.kind = kind; | |
6255 | current_history = current_history->next; | |
6256 | } | |
6257 | } | |
6258 | ||
636dff67 | 6259 | |
6de9cd9a | 6260 | /* Match any of the various end-block statements. Returns the type of |
9abe5e56 DK |
6261 | END to the caller. The END INTERFACE, END IF, END DO, END SELECT |
6262 | and END BLOCK statements cannot be replaced by a single END statement. */ | |
6de9cd9a DN |
6263 | |
6264 | match | |
636dff67 | 6265 | gfc_match_end (gfc_statement *st) |
6de9cd9a DN |
6266 | { |
6267 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6268 | gfc_compile_state state; | |
6269 | locus old_loc; | |
6270 | const char *block_name; | |
6271 | const char *target; | |
ddc9ce91 | 6272 | int eos_ok; |
6de9cd9a | 6273 | match m; |
0cab6b73 TK |
6274 | gfc_namespace *parent_ns, *ns, *prev_ns; |
6275 | gfc_namespace **nsp; | |
4668d6f9 | 6276 | bool abreviated_modproc_decl; |
6de9cd9a | 6277 | |
63645982 | 6278 | old_loc = gfc_current_locus; |
6de9cd9a DN |
6279 | if (gfc_match ("end") != MATCH_YES) |
6280 | return MATCH_NO; | |
6281 | ||
6282 | state = gfc_current_state (); | |
636dff67 SK |
6283 | block_name = gfc_current_block () == NULL |
6284 | ? NULL : gfc_current_block ()->name; | |
6de9cd9a | 6285 | |
03af1e4c | 6286 | switch (state) |
6de9cd9a | 6287 | { |
03af1e4c DK |
6288 | case COMP_ASSOCIATE: |
6289 | case COMP_BLOCK: | |
3a1fd30c | 6290 | if (!strncmp (block_name, "block@", strlen("block@"))) |
03af1e4c DK |
6291 | block_name = NULL; |
6292 | break; | |
6293 | ||
6294 | case COMP_CONTAINS: | |
6295 | case COMP_DERIVED_CONTAINS: | |
6de9cd9a | 6296 | state = gfc_state_stack->previous->state; |
636dff67 SK |
6297 | block_name = gfc_state_stack->previous->sym == NULL |
6298 | ? NULL : gfc_state_stack->previous->sym->name; | |
03af1e4c DK |
6299 | break; |
6300 | ||
6301 | default: | |
6302 | break; | |
6de9cd9a DN |
6303 | } |
6304 | ||
4668d6f9 PT |
6305 | abreviated_modproc_decl |
6306 | = gfc_current_block () | |
6307 | && gfc_current_block ()->abr_modproc_decl; | |
6308 | ||
6de9cd9a DN |
6309 | switch (state) |
6310 | { | |
6311 | case COMP_NONE: | |
6312 | case COMP_PROGRAM: | |
6313 | *st = ST_END_PROGRAM; | |
6314 | target = " program"; | |
ddc9ce91 | 6315 | eos_ok = 1; |
6de9cd9a DN |
6316 | break; |
6317 | ||
6318 | case COMP_SUBROUTINE: | |
6319 | *st = ST_END_SUBROUTINE; | |
4668d6f9 | 6320 | if (!abreviated_modproc_decl) |
6de9cd9a | 6321 | target = " subroutine"; |
4668d6f9 PT |
6322 | else |
6323 | target = " procedure"; | |
ddc9ce91 | 6324 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
6325 | break; |
6326 | ||
6327 | case COMP_FUNCTION: | |
6328 | *st = ST_END_FUNCTION; | |
4668d6f9 | 6329 | if (!abreviated_modproc_decl) |
6de9cd9a | 6330 | target = " function"; |
4668d6f9 PT |
6331 | else |
6332 | target = " procedure"; | |
ddc9ce91 | 6333 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
6334 | break; |
6335 | ||
6336 | case COMP_BLOCK_DATA: | |
6337 | *st = ST_END_BLOCK_DATA; | |
6338 | target = " block data"; | |
ddc9ce91 | 6339 | eos_ok = 1; |
6de9cd9a DN |
6340 | break; |
6341 | ||
6342 | case COMP_MODULE: | |
6343 | *st = ST_END_MODULE; | |
6344 | target = " module"; | |
ddc9ce91 | 6345 | eos_ok = 1; |
6de9cd9a DN |
6346 | break; |
6347 | ||
4668d6f9 PT |
6348 | case COMP_SUBMODULE: |
6349 | *st = ST_END_SUBMODULE; | |
6350 | target = " submodule"; | |
6351 | eos_ok = 1; | |
6352 | break; | |
6353 | ||
6de9cd9a DN |
6354 | case COMP_INTERFACE: |
6355 | *st = ST_END_INTERFACE; | |
6356 | target = " interface"; | |
ddc9ce91 | 6357 | eos_ok = 0; |
6de9cd9a DN |
6358 | break; |
6359 | ||
6360 | case COMP_DERIVED: | |
30b608eb | 6361 | case COMP_DERIVED_CONTAINS: |
6de9cd9a DN |
6362 | *st = ST_END_TYPE; |
6363 | target = " type"; | |
ddc9ce91 | 6364 | eos_ok = 0; |
6de9cd9a DN |
6365 | break; |
6366 | ||
03af1e4c DK |
6367 | case COMP_ASSOCIATE: |
6368 | *st = ST_END_ASSOCIATE; | |
6369 | target = " associate"; | |
6370 | eos_ok = 0; | |
6371 | break; | |
6372 | ||
9abe5e56 DK |
6373 | case COMP_BLOCK: |
6374 | *st = ST_END_BLOCK; | |
6375 | target = " block"; | |
6376 | eos_ok = 0; | |
6377 | break; | |
6378 | ||
6de9cd9a DN |
6379 | case COMP_IF: |
6380 | *st = ST_ENDIF; | |
6381 | target = " if"; | |
ddc9ce91 | 6382 | eos_ok = 0; |
6de9cd9a DN |
6383 | break; |
6384 | ||
6385 | case COMP_DO: | |
8c6a85e3 | 6386 | case COMP_DO_CONCURRENT: |
6de9cd9a DN |
6387 | *st = ST_ENDDO; |
6388 | target = " do"; | |
ddc9ce91 | 6389 | eos_ok = 0; |
6de9cd9a DN |
6390 | break; |
6391 | ||
d0a4a61c TB |
6392 | case COMP_CRITICAL: |
6393 | *st = ST_END_CRITICAL; | |
6394 | target = " critical"; | |
6395 | eos_ok = 0; | |
6396 | break; | |
6397 | ||
6de9cd9a | 6398 | case COMP_SELECT: |
cf2b3c22 | 6399 | case COMP_SELECT_TYPE: |
6de9cd9a DN |
6400 | *st = ST_END_SELECT; |
6401 | target = " select"; | |
ddc9ce91 | 6402 | eos_ok = 0; |
6de9cd9a DN |
6403 | break; |
6404 | ||
6405 | case COMP_FORALL: | |
6406 | *st = ST_END_FORALL; | |
6407 | target = " forall"; | |
ddc9ce91 | 6408 | eos_ok = 0; |
6de9cd9a DN |
6409 | break; |
6410 | ||
6411 | case COMP_WHERE: | |
6412 | *st = ST_END_WHERE; | |
6413 | target = " where"; | |
ddc9ce91 | 6414 | eos_ok = 0; |
6de9cd9a DN |
6415 | break; |
6416 | ||
25d8f0a2 TS |
6417 | case COMP_ENUM: |
6418 | *st = ST_END_ENUM; | |
6419 | target = " enum"; | |
6420 | eos_ok = 0; | |
6421 | last_initializer = NULL; | |
6422 | set_enum_kind (); | |
6423 | gfc_free_enum_history (); | |
6424 | break; | |
6425 | ||
6de9cd9a DN |
6426 | default: |
6427 | gfc_error ("Unexpected END statement at %C"); | |
6428 | goto cleanup; | |
6429 | } | |
6430 | ||
3a43b5b3 | 6431 | old_loc = gfc_current_locus; |
6de9cd9a DN |
6432 | if (gfc_match_eos () == MATCH_YES) |
6433 | { | |
272001a2 TB |
6434 | if (!eos_ok && (*st == ST_END_SUBROUTINE || *st == ST_END_FUNCTION)) |
6435 | { | |
524af0d6 JB |
6436 | if (!gfc_notify_std (GFC_STD_F2008, "END statement " |
6437 | "instead of %s statement at %L", | |
4668d6f9 PT |
6438 | abreviated_modproc_decl ? "END PROCEDURE" |
6439 | : gfc_ascii_statement(*st), &old_loc)) | |
272001a2 TB |
6440 | goto cleanup; |
6441 | } | |
6442 | else if (!eos_ok) | |
6de9cd9a | 6443 | { |
66e4ab31 | 6444 | /* We would have required END [something]. */ |
59ce85b5 TS |
6445 | gfc_error ("%s statement expected at %L", |
6446 | gfc_ascii_statement (*st), &old_loc); | |
6de9cd9a DN |
6447 | goto cleanup; |
6448 | } | |
6449 | ||
6450 | return MATCH_YES; | |
6451 | } | |
6452 | ||
6453 | /* Verify that we've got the sort of end-block that we're expecting. */ | |
6454 | if (gfc_match (target) != MATCH_YES) | |
6455 | { | |
4668d6f9 PT |
6456 | gfc_error ("Expecting %s statement at %L", abreviated_modproc_decl |
6457 | ? "END PROCEDURE" : gfc_ascii_statement(*st), &old_loc); | |
6de9cd9a DN |
6458 | goto cleanup; |
6459 | } | |
6460 | ||
3a43b5b3 | 6461 | old_loc = gfc_current_locus; |
6de9cd9a DN |
6462 | /* If we're at the end, make sure a block name wasn't required. */ |
6463 | if (gfc_match_eos () == MATCH_YES) | |
6464 | { | |
6465 | ||
690af379 | 6466 | if (*st != ST_ENDDO && *st != ST_ENDIF && *st != ST_END_SELECT |
d0a4a61c | 6467 | && *st != ST_END_FORALL && *st != ST_END_WHERE && *st != ST_END_BLOCK |
03af1e4c | 6468 | && *st != ST_END_ASSOCIATE && *st != ST_END_CRITICAL) |
6de9cd9a DN |
6469 | return MATCH_YES; |
6470 | ||
9abe5e56 | 6471 | if (!block_name) |
6de9cd9a DN |
6472 | return MATCH_YES; |
6473 | ||
c4100eae | 6474 | gfc_error ("Expected block name of %qs in %s statement at %L", |
3a43b5b3 | 6475 | block_name, gfc_ascii_statement (*st), &old_loc); |
6de9cd9a DN |
6476 | |
6477 | return MATCH_ERROR; | |
6478 | } | |
6479 | ||
6480 | /* END INTERFACE has a special handler for its several possible endings. */ | |
6481 | if (*st == ST_END_INTERFACE) | |
6482 | return gfc_match_end_interface (); | |
6483 | ||
66e4ab31 SK |
6484 | /* We haven't hit the end of statement, so what is left must be an |
6485 | end-name. */ | |
6de9cd9a DN |
6486 | m = gfc_match_space (); |
6487 | if (m == MATCH_YES) | |
6488 | m = gfc_match_name (name); | |
6489 | ||
6490 | if (m == MATCH_NO) | |
6491 | gfc_error ("Expected terminating name at %C"); | |
6492 | if (m != MATCH_YES) | |
6493 | goto cleanup; | |
6494 | ||
6495 | if (block_name == NULL) | |
6496 | goto syntax; | |
6497 | ||
3d5dc929 PT |
6498 | /* We have to pick out the declared submodule name from the composite |
6499 | required by F2008:11.2.3 para 2, which ends in the declared name. */ | |
6500 | if (state == COMP_SUBMODULE) | |
6501 | block_name = strchr (block_name, '.') + 1; | |
6502 | ||
3070bab4 | 6503 | if (strcmp (name, block_name) != 0 && strcmp (block_name, "ppr@") != 0) |
6de9cd9a | 6504 | { |
c4100eae | 6505 | gfc_error ("Expected label %qs for %s statement at %C", block_name, |
6de9cd9a DN |
6506 | gfc_ascii_statement (*st)); |
6507 | goto cleanup; | |
6508 | } | |
3070bab4 JW |
6509 | /* Procedure pointer as function result. */ |
6510 | else if (strcmp (block_name, "ppr@") == 0 | |
6511 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) != 0) | |
6512 | { | |
c4100eae | 6513 | gfc_error ("Expected label %qs for %s statement at %C", |
3070bab4 JW |
6514 | gfc_current_block ()->ns->proc_name->name, |
6515 | gfc_ascii_statement (*st)); | |
6516 | goto cleanup; | |
6517 | } | |
6de9cd9a DN |
6518 | |
6519 | if (gfc_match_eos () == MATCH_YES) | |
6520 | return MATCH_YES; | |
6521 | ||
6522 | syntax: | |
6523 | gfc_syntax_error (*st); | |
6524 | ||
6525 | cleanup: | |
63645982 | 6526 | gfc_current_locus = old_loc; |
0cab6b73 TK |
6527 | |
6528 | /* If we are missing an END BLOCK, we created a half-ready namespace. | |
6529 | Remove it from the parent namespace's sibling list. */ | |
6530 | ||
9f7ba208 | 6531 | while (state == COMP_BLOCK) |
0cab6b73 TK |
6532 | { |
6533 | parent_ns = gfc_current_ns->parent; | |
6534 | ||
6535 | nsp = &(gfc_state_stack->previous->tail->ext.block.ns); | |
6536 | ||
6537 | prev_ns = NULL; | |
6538 | ns = *nsp; | |
6539 | while (ns) | |
6540 | { | |
6541 | if (ns == gfc_current_ns) | |
6542 | { | |
6543 | if (prev_ns == NULL) | |
6544 | *nsp = NULL; | |
6545 | else | |
6546 | prev_ns->sibling = ns->sibling; | |
6547 | } | |
6548 | prev_ns = ns; | |
6549 | ns = ns->sibling; | |
6550 | } | |
6551 | ||
6552 | gfc_free_namespace (gfc_current_ns); | |
6553 | gfc_current_ns = parent_ns; | |
9f7ba208 LK |
6554 | gfc_state_stack = gfc_state_stack->previous; |
6555 | state = gfc_current_state (); | |
0cab6b73 TK |
6556 | } |
6557 | ||
6de9cd9a DN |
6558 | return MATCH_ERROR; |
6559 | } | |
6560 | ||
6561 | ||
6562 | ||
6563 | /***************** Attribute declaration statements ****************/ | |
6564 | ||
6565 | /* Set the attribute of a single variable. */ | |
6566 | ||
6567 | static match | |
6568 | attr_decl1 (void) | |
6569 | { | |
6570 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6571 | gfc_array_spec *as; | |
97440db5 ML |
6572 | |
6573 | /* Workaround -Wmaybe-uninitialized false positive during | |
6574 | profiledbootstrap by initializing them. */ | |
6575 | gfc_symbol *sym = NULL; | |
6de9cd9a DN |
6576 | locus var_locus; |
6577 | match m; | |
6578 | ||
6579 | as = NULL; | |
6580 | ||
6581 | m = gfc_match_name (name); | |
6582 | if (m != MATCH_YES) | |
6583 | goto cleanup; | |
6584 | ||
08a6b8e0 | 6585 | if (find_special (name, &sym, false)) |
6de9cd9a DN |
6586 | return MATCH_ERROR; |
6587 | ||
524af0d6 | 6588 | if (!check_function_name (name)) |
bb9de0c4 JW |
6589 | { |
6590 | m = MATCH_ERROR; | |
6591 | goto cleanup; | |
6592 | } | |
f5acf0f2 | 6593 | |
63645982 | 6594 | var_locus = gfc_current_locus; |
6de9cd9a DN |
6595 | |
6596 | /* Deal with possible array specification for certain attributes. */ | |
6597 | if (current_attr.dimension | |
be59db2d | 6598 | || current_attr.codimension |
6de9cd9a DN |
6599 | || current_attr.allocatable |
6600 | || current_attr.pointer | |
6601 | || current_attr.target) | |
6602 | { | |
be59db2d TB |
6603 | m = gfc_match_array_spec (&as, !current_attr.codimension, |
6604 | !current_attr.dimension | |
6605 | && !current_attr.pointer | |
6606 | && !current_attr.target); | |
6de9cd9a DN |
6607 | if (m == MATCH_ERROR) |
6608 | goto cleanup; | |
6609 | ||
6610 | if (current_attr.dimension && m == MATCH_NO) | |
6611 | { | |
636dff67 SK |
6612 | gfc_error ("Missing array specification at %L in DIMENSION " |
6613 | "statement", &var_locus); | |
6de9cd9a DN |
6614 | m = MATCH_ERROR; |
6615 | goto cleanup; | |
6616 | } | |
6617 | ||
1283ab12 TB |
6618 | if (current_attr.dimension && sym->value) |
6619 | { | |
6620 | gfc_error ("Dimensions specified for %s at %L after its " | |
6621 | "initialisation", sym->name, &var_locus); | |
6622 | m = MATCH_ERROR; | |
6623 | goto cleanup; | |
6624 | } | |
6625 | ||
be59db2d TB |
6626 | if (current_attr.codimension && m == MATCH_NO) |
6627 | { | |
6628 | gfc_error ("Missing array specification at %L in CODIMENSION " | |
6629 | "statement", &var_locus); | |
6630 | m = MATCH_ERROR; | |
6631 | goto cleanup; | |
6632 | } | |
6633 | ||
6de9cd9a DN |
6634 | if ((current_attr.allocatable || current_attr.pointer) |
6635 | && (m == MATCH_YES) && (as->type != AS_DEFERRED)) | |
6636 | { | |
636dff67 | 6637 | gfc_error ("Array specification must be deferred at %L", &var_locus); |
6de9cd9a DN |
6638 | m = MATCH_ERROR; |
6639 | goto cleanup; | |
6640 | } | |
6641 | } | |
6642 | ||
2e23972e JW |
6643 | /* Update symbol table. DIMENSION attribute is set in |
6644 | gfc_set_array_spec(). For CLASS variables, this must be applied | |
b04533af | 6645 | to the first component, or '_data' field. */ |
d40477b4 | 6646 | if (sym->ts.type == BT_CLASS && sym->ts.u.derived->attr.is_class) |
6de9cd9a | 6647 | { |
524af0d6 | 6648 | if (!gfc_copy_attr (&CLASS_DATA(sym)->attr, ¤t_attr, &var_locus)) |
2e23972e JW |
6649 | { |
6650 | m = MATCH_ERROR; | |
6651 | goto cleanup; | |
6652 | } | |
2e23972e JW |
6653 | } |
6654 | else | |
6655 | { | |
be59db2d | 6656 | if (current_attr.dimension == 0 && current_attr.codimension == 0 |
524af0d6 | 6657 | && !gfc_copy_attr (&sym->attr, ¤t_attr, &var_locus)) |
2e23972e JW |
6658 | { |
6659 | m = MATCH_ERROR; | |
6660 | goto cleanup; | |
6661 | } | |
6de9cd9a | 6662 | } |
f5acf0f2 | 6663 | |
528622fd | 6664 | if (sym->ts.type == BT_CLASS |
9b6da3c7 | 6665 | && !gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as)) |
96d9b22c JW |
6666 | { |
6667 | m = MATCH_ERROR; | |
6668 | goto cleanup; | |
6669 | } | |
6de9cd9a | 6670 | |
524af0d6 | 6671 | if (!gfc_set_array_spec (sym, as, &var_locus)) |
6de9cd9a DN |
6672 | { |
6673 | m = MATCH_ERROR; | |
6674 | goto cleanup; | |
6675 | } | |
d51347f9 | 6676 | |
83d890b9 AL |
6677 | if (sym->attr.cray_pointee && sym->as != NULL) |
6678 | { | |
6679 | /* Fix the array spec. */ | |
f5acf0f2 | 6680 | m = gfc_mod_pointee_as (sym->as); |
83d890b9 AL |
6681 | if (m == MATCH_ERROR) |
6682 | goto cleanup; | |
6683 | } | |
6de9cd9a | 6684 | |
524af0d6 | 6685 | if (!gfc_add_attribute (&sym->attr, &var_locus)) |
1902704e PT |
6686 | { |
6687 | m = MATCH_ERROR; | |
6688 | goto cleanup; | |
6689 | } | |
6690 | ||
6de9cd9a DN |
6691 | if ((current_attr.external || current_attr.intrinsic) |
6692 | && sym->attr.flavor != FL_PROCEDURE | |
524af0d6 | 6693 | && !gfc_add_flavor (&sym->attr, FL_PROCEDURE, sym->name, NULL)) |
6de9cd9a DN |
6694 | { |
6695 | m = MATCH_ERROR; | |
6696 | goto cleanup; | |
6697 | } | |
6698 | ||
3070bab4 JW |
6699 | add_hidden_procptr_result (sym); |
6700 | ||
6de9cd9a DN |
6701 | return MATCH_YES; |
6702 | ||
6703 | cleanup: | |
6704 | gfc_free_array_spec (as); | |
6705 | return m; | |
6706 | } | |
6707 | ||
6708 | ||
6709 | /* Generic attribute declaration subroutine. Used for attributes that | |
6710 | just have a list of names. */ | |
6711 | ||
6712 | static match | |
6713 | attr_decl (void) | |
6714 | { | |
6715 | match m; | |
6716 | ||
6717 | /* Gobble the optional double colon, by simply ignoring the result | |
6718 | of gfc_match(). */ | |
6719 | gfc_match (" ::"); | |
6720 | ||
6721 | for (;;) | |
6722 | { | |
6723 | m = attr_decl1 (); | |
6724 | if (m != MATCH_YES) | |
6725 | break; | |
6726 | ||
6727 | if (gfc_match_eos () == MATCH_YES) | |
6728 | { | |
6729 | m = MATCH_YES; | |
6730 | break; | |
6731 | } | |
6732 | ||
6733 | if (gfc_match_char (',') != MATCH_YES) | |
6734 | { | |
6735 | gfc_error ("Unexpected character in variable list at %C"); | |
6736 | m = MATCH_ERROR; | |
6737 | break; | |
6738 | } | |
6739 | } | |
6740 | ||
6741 | return m; | |
6742 | } | |
6743 | ||
6744 | ||
83d890b9 AL |
6745 | /* This routine matches Cray Pointer declarations of the form: |
6746 | pointer ( <pointer>, <pointee> ) | |
6747 | or | |
d51347f9 TB |
6748 | pointer ( <pointer1>, <pointee1> ), ( <pointer2>, <pointee2> ), ... |
6749 | The pointer, if already declared, should be an integer. Otherwise, we | |
83d890b9 AL |
6750 | set it as BT_INTEGER with kind gfc_index_integer_kind. The pointee may |
6751 | be either a scalar, or an array declaration. No space is allocated for | |
d51347f9 | 6752 | the pointee. For the statement |
83d890b9 AL |
6753 | pointer (ipt, ar(10)) |
6754 | any subsequent uses of ar will be translated (in C-notation) as | |
d51347f9 | 6755 | ar(i) => ((<type> *) ipt)(i) |
b122dc6a | 6756 | After gimplification, pointee variable will disappear in the code. */ |
83d890b9 AL |
6757 | |
6758 | static match | |
6759 | cray_pointer_decl (void) | |
6760 | { | |
6761 | match m; | |
be59db2d | 6762 | gfc_array_spec *as = NULL; |
83d890b9 AL |
6763 | gfc_symbol *cptr; /* Pointer symbol. */ |
6764 | gfc_symbol *cpte; /* Pointee symbol. */ | |
6765 | locus var_locus; | |
6766 | bool done = false; | |
6767 | ||
6768 | while (!done) | |
6769 | { | |
6770 | if (gfc_match_char ('(') != MATCH_YES) | |
6771 | { | |
a4d9b221 | 6772 | gfc_error ("Expected %<(%> at %C"); |
d51347f9 | 6773 | return MATCH_ERROR; |
83d890b9 | 6774 | } |
d51347f9 | 6775 | |
83d890b9 AL |
6776 | /* Match pointer. */ |
6777 | var_locus = gfc_current_locus; | |
6778 | gfc_clear_attr (¤t_attr); | |
6779 | gfc_add_cray_pointer (¤t_attr, &var_locus); | |
6780 | current_ts.type = BT_INTEGER; | |
6781 | current_ts.kind = gfc_index_integer_kind; | |
6782 | ||
d51347f9 | 6783 | m = gfc_match_symbol (&cptr, 0); |
83d890b9 AL |
6784 | if (m != MATCH_YES) |
6785 | { | |
6786 | gfc_error ("Expected variable name at %C"); | |
6787 | return m; | |
6788 | } | |
d51347f9 | 6789 | |
524af0d6 | 6790 | if (!gfc_add_cray_pointer (&cptr->attr, &var_locus)) |
83d890b9 AL |
6791 | return MATCH_ERROR; |
6792 | ||
d51347f9 | 6793 | gfc_set_sym_referenced (cptr); |
83d890b9 AL |
6794 | |
6795 | if (cptr->ts.type == BT_UNKNOWN) /* Override the type, if necessary. */ | |
6796 | { | |
6797 | cptr->ts.type = BT_INTEGER; | |
d51347f9 | 6798 | cptr->ts.kind = gfc_index_integer_kind; |
83d890b9 AL |
6799 | } |
6800 | else if (cptr->ts.type != BT_INTEGER) | |
6801 | { | |
e25a0da3 | 6802 | gfc_error ("Cray pointer at %C must be an integer"); |
83d890b9 AL |
6803 | return MATCH_ERROR; |
6804 | } | |
6805 | else if (cptr->ts.kind < gfc_index_integer_kind) | |
db30e21c | 6806 | gfc_warning (0, "Cray pointer at %C has %d bytes of precision;" |
e25a0da3 | 6807 | " memory addresses require %d bytes", |
636dff67 | 6808 | cptr->ts.kind, gfc_index_integer_kind); |
83d890b9 AL |
6809 | |
6810 | if (gfc_match_char (',') != MATCH_YES) | |
6811 | { | |
6812 | gfc_error ("Expected \",\" at %C"); | |
d51347f9 | 6813 | return MATCH_ERROR; |
83d890b9 AL |
6814 | } |
6815 | ||
d51347f9 | 6816 | /* Match Pointee. */ |
83d890b9 AL |
6817 | var_locus = gfc_current_locus; |
6818 | gfc_clear_attr (¤t_attr); | |
6819 | gfc_add_cray_pointee (¤t_attr, &var_locus); | |
6820 | current_ts.type = BT_UNKNOWN; | |
6821 | current_ts.kind = 0; | |
6822 | ||
6823 | m = gfc_match_symbol (&cpte, 0); | |
6824 | if (m != MATCH_YES) | |
6825 | { | |
6826 | gfc_error ("Expected variable name at %C"); | |
6827 | return m; | |
6828 | } | |
d51347f9 | 6829 | |
83d890b9 | 6830 | /* Check for an optional array spec. */ |
be59db2d | 6831 | m = gfc_match_array_spec (&as, true, false); |
83d890b9 AL |
6832 | if (m == MATCH_ERROR) |
6833 | { | |
6834 | gfc_free_array_spec (as); | |
6835 | return m; | |
6836 | } | |
6837 | else if (m == MATCH_NO) | |
6838 | { | |
6839 | gfc_free_array_spec (as); | |
6840 | as = NULL; | |
f5acf0f2 | 6841 | } |
83d890b9 | 6842 | |
524af0d6 | 6843 | if (!gfc_add_cray_pointee (&cpte->attr, &var_locus)) |
83d890b9 AL |
6844 | return MATCH_ERROR; |
6845 | ||
6846 | gfc_set_sym_referenced (cpte); | |
6847 | ||
6848 | if (cpte->as == NULL) | |
6849 | { | |
524af0d6 | 6850 | if (!gfc_set_array_spec (cpte, as, &var_locus)) |
83d890b9 AL |
6851 | gfc_internal_error ("Couldn't set Cray pointee array spec."); |
6852 | } | |
6853 | else if (as != NULL) | |
6854 | { | |
e25a0da3 | 6855 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
6856 | gfc_free_array_spec (as); |
6857 | return MATCH_ERROR; | |
6858 | } | |
f5acf0f2 | 6859 | |
83d890b9 | 6860 | as = NULL; |
f5acf0f2 | 6861 | |
83d890b9 AL |
6862 | if (cpte->as != NULL) |
6863 | { | |
6864 | /* Fix array spec. */ | |
6865 | m = gfc_mod_pointee_as (cpte->as); | |
6866 | if (m == MATCH_ERROR) | |
6867 | return m; | |
f5acf0f2 PT |
6868 | } |
6869 | ||
83d890b9 | 6870 | /* Point the Pointee at the Pointer. */ |
b122dc6a | 6871 | cpte->cp_pointer = cptr; |
83d890b9 AL |
6872 | |
6873 | if (gfc_match_char (')') != MATCH_YES) | |
6874 | { | |
6875 | gfc_error ("Expected \")\" at %C"); | |
f5acf0f2 | 6876 | return MATCH_ERROR; |
83d890b9 AL |
6877 | } |
6878 | m = gfc_match_char (','); | |
6879 | if (m != MATCH_YES) | |
6880 | done = true; /* Stop searching for more declarations. */ | |
6881 | ||
6882 | } | |
f5acf0f2 | 6883 | |
83d890b9 AL |
6884 | if (m == MATCH_ERROR /* Failed when trying to find ',' above. */ |
6885 | || gfc_match_eos () != MATCH_YES) | |
6886 | { | |
a4d9b221 | 6887 | gfc_error ("Expected %<,%> or end of statement at %C"); |
83d890b9 AL |
6888 | return MATCH_ERROR; |
6889 | } | |
6890 | return MATCH_YES; | |
6891 | } | |
6892 | ||
6893 | ||
6de9cd9a DN |
6894 | match |
6895 | gfc_match_external (void) | |
6896 | { | |
6897 | ||
6898 | gfc_clear_attr (¤t_attr); | |
1902704e | 6899 | current_attr.external = 1; |
6de9cd9a DN |
6900 | |
6901 | return attr_decl (); | |
6902 | } | |
6903 | ||
6904 | ||
6de9cd9a DN |
6905 | match |
6906 | gfc_match_intent (void) | |
6907 | { | |
6908 | sym_intent intent; | |
6909 | ||
9abe5e56 DK |
6910 | /* This is not allowed within a BLOCK construct! */ |
6911 | if (gfc_current_state () == COMP_BLOCK) | |
6912 | { | |
6913 | gfc_error ("INTENT is not allowed inside of BLOCK at %C"); | |
6914 | return MATCH_ERROR; | |
6915 | } | |
6916 | ||
6de9cd9a DN |
6917 | intent = match_intent_spec (); |
6918 | if (intent == INTENT_UNKNOWN) | |
6919 | return MATCH_ERROR; | |
6920 | ||
6921 | gfc_clear_attr (¤t_attr); | |
1902704e | 6922 | current_attr.intent = intent; |
6de9cd9a DN |
6923 | |
6924 | return attr_decl (); | |
6925 | } | |
6926 | ||
6927 | ||
6928 | match | |
6929 | gfc_match_intrinsic (void) | |
6930 | { | |
6931 | ||
6932 | gfc_clear_attr (¤t_attr); | |
1902704e | 6933 | current_attr.intrinsic = 1; |
6de9cd9a DN |
6934 | |
6935 | return attr_decl (); | |
6936 | } | |
6937 | ||
6938 | ||
6939 | match | |
6940 | gfc_match_optional (void) | |
6941 | { | |
9abe5e56 DK |
6942 | /* This is not allowed within a BLOCK construct! */ |
6943 | if (gfc_current_state () == COMP_BLOCK) | |
6944 | { | |
6945 | gfc_error ("OPTIONAL is not allowed inside of BLOCK at %C"); | |
6946 | return MATCH_ERROR; | |
6947 | } | |
6de9cd9a DN |
6948 | |
6949 | gfc_clear_attr (¤t_attr); | |
1902704e | 6950 | current_attr.optional = 1; |
6de9cd9a DN |
6951 | |
6952 | return attr_decl (); | |
6953 | } | |
6954 | ||
6955 | ||
6956 | match | |
6957 | gfc_match_pointer (void) | |
6958 | { | |
83d890b9 | 6959 | gfc_gobble_whitespace (); |
8fc541d3 | 6960 | if (gfc_peek_ascii_char () == '(') |
83d890b9 | 6961 | { |
c61819ff | 6962 | if (!flag_cray_pointer) |
83d890b9 | 6963 | { |
636dff67 SK |
6964 | gfc_error ("Cray pointer declaration at %C requires -fcray-pointer " |
6965 | "flag"); | |
83d890b9 AL |
6966 | return MATCH_ERROR; |
6967 | } | |
6968 | return cray_pointer_decl (); | |
6969 | } | |
6970 | else | |
6971 | { | |
6972 | gfc_clear_attr (¤t_attr); | |
1902704e | 6973 | current_attr.pointer = 1; |
f5acf0f2 | 6974 | |
83d890b9 AL |
6975 | return attr_decl (); |
6976 | } | |
6de9cd9a DN |
6977 | } |
6978 | ||
6979 | ||
6980 | match | |
6981 | gfc_match_allocatable (void) | |
6982 | { | |
6de9cd9a | 6983 | gfc_clear_attr (¤t_attr); |
1902704e | 6984 | current_attr.allocatable = 1; |
6de9cd9a DN |
6985 | |
6986 | return attr_decl (); | |
6987 | } | |
6988 | ||
6989 | ||
be59db2d TB |
6990 | match |
6991 | gfc_match_codimension (void) | |
6992 | { | |
6993 | gfc_clear_attr (¤t_attr); | |
6994 | current_attr.codimension = 1; | |
6995 | ||
6996 | return attr_decl (); | |
6997 | } | |
6998 | ||
6999 | ||
fe4e525c TB |
7000 | match |
7001 | gfc_match_contiguous (void) | |
7002 | { | |
524af0d6 | 7003 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS statement at %C")) |
fe4e525c TB |
7004 | return MATCH_ERROR; |
7005 | ||
7006 | gfc_clear_attr (¤t_attr); | |
7007 | current_attr.contiguous = 1; | |
7008 | ||
7009 | return attr_decl (); | |
7010 | } | |
7011 | ||
7012 | ||
6de9cd9a DN |
7013 | match |
7014 | gfc_match_dimension (void) | |
7015 | { | |
6de9cd9a | 7016 | gfc_clear_attr (¤t_attr); |
1902704e | 7017 | current_attr.dimension = 1; |
6de9cd9a DN |
7018 | |
7019 | return attr_decl (); | |
7020 | } | |
7021 | ||
7022 | ||
7023 | match | |
7024 | gfc_match_target (void) | |
7025 | { | |
6de9cd9a | 7026 | gfc_clear_attr (¤t_attr); |
1902704e | 7027 | current_attr.target = 1; |
6de9cd9a DN |
7028 | |
7029 | return attr_decl (); | |
7030 | } | |
7031 | ||
7032 | ||
7033 | /* Match the list of entities being specified in a PUBLIC or PRIVATE | |
7034 | statement. */ | |
7035 | ||
7036 | static match | |
7037 | access_attr_decl (gfc_statement st) | |
7038 | { | |
7039 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7040 | interface_type type; | |
7041 | gfc_user_op *uop; | |
c3f34952 | 7042 | gfc_symbol *sym, *dt_sym; |
a1ee985f | 7043 | gfc_intrinsic_op op; |
6de9cd9a DN |
7044 | match m; |
7045 | ||
7046 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7047 | goto done; | |
7048 | ||
7049 | for (;;) | |
7050 | { | |
a1ee985f | 7051 | m = gfc_match_generic_spec (&type, name, &op); |
6de9cd9a DN |
7052 | if (m == MATCH_NO) |
7053 | goto syntax; | |
7054 | if (m == MATCH_ERROR) | |
7055 | return MATCH_ERROR; | |
7056 | ||
7057 | switch (type) | |
7058 | { | |
7059 | case INTERFACE_NAMELESS: | |
9e1d712c | 7060 | case INTERFACE_ABSTRACT: |
6de9cd9a DN |
7061 | goto syntax; |
7062 | ||
7063 | case INTERFACE_GENERIC: | |
7064 | if (gfc_get_symbol (name, NULL, &sym)) | |
7065 | goto done; | |
7066 | ||
524af0d6 JB |
7067 | if (!gfc_add_access (&sym->attr, |
7068 | (st == ST_PUBLIC) | |
7069 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
7070 | sym->name, NULL)) | |
6de9cd9a DN |
7071 | return MATCH_ERROR; |
7072 | ||
c3f34952 | 7073 | if (sym->attr.generic && (dt_sym = gfc_find_dt_in_generic (sym)) |
524af0d6 JB |
7074 | && !gfc_add_access (&dt_sym->attr, |
7075 | (st == ST_PUBLIC) | |
7076 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
7077 | sym->name, NULL)) | |
c3f34952 TB |
7078 | return MATCH_ERROR; |
7079 | ||
6de9cd9a DN |
7080 | break; |
7081 | ||
7082 | case INTERFACE_INTRINSIC_OP: | |
a1ee985f | 7083 | if (gfc_current_ns->operator_access[op] == ACCESS_UNKNOWN) |
6de9cd9a | 7084 | { |
fb03a37e TK |
7085 | gfc_intrinsic_op other_op; |
7086 | ||
a1ee985f | 7087 | gfc_current_ns->operator_access[op] = |
6de9cd9a | 7088 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; |
fb03a37e TK |
7089 | |
7090 | /* Handle the case if there is another op with the same | |
7091 | function, for INTRINSIC_EQ vs. INTRINSIC_EQ_OS and so on. */ | |
7092 | other_op = gfc_equivalent_op (op); | |
7093 | ||
7094 | if (other_op != INTRINSIC_NONE) | |
7095 | gfc_current_ns->operator_access[other_op] = | |
7096 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
7097 | ||
6de9cd9a DN |
7098 | } |
7099 | else | |
7100 | { | |
7101 | gfc_error ("Access specification of the %s operator at %C has " | |
a1ee985f | 7102 | "already been specified", gfc_op2string (op)); |
6de9cd9a DN |
7103 | goto done; |
7104 | } | |
7105 | ||
7106 | break; | |
7107 | ||
7108 | case INTERFACE_USER_OP: | |
7109 | uop = gfc_get_uop (name); | |
7110 | ||
7111 | if (uop->access == ACCESS_UNKNOWN) | |
7112 | { | |
636dff67 SK |
7113 | uop->access = (st == ST_PUBLIC) |
7114 | ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
6de9cd9a DN |
7115 | } |
7116 | else | |
7117 | { | |
636dff67 SK |
7118 | gfc_error ("Access specification of the .%s. operator at %C " |
7119 | "has already been specified", sym->name); | |
6de9cd9a DN |
7120 | goto done; |
7121 | } | |
7122 | ||
7123 | break; | |
7124 | } | |
7125 | ||
7126 | if (gfc_match_char (',') == MATCH_NO) | |
7127 | break; | |
7128 | } | |
7129 | ||
7130 | if (gfc_match_eos () != MATCH_YES) | |
7131 | goto syntax; | |
7132 | return MATCH_YES; | |
7133 | ||
7134 | syntax: | |
7135 | gfc_syntax_error (st); | |
7136 | ||
7137 | done: | |
7138 | return MATCH_ERROR; | |
7139 | } | |
7140 | ||
7141 | ||
ee7e677f TB |
7142 | match |
7143 | gfc_match_protected (void) | |
7144 | { | |
7145 | gfc_symbol *sym; | |
7146 | match m; | |
7147 | ||
73641c88 SK |
7148 | if (!gfc_current_ns->proc_name |
7149 | || gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
ee7e677f TB |
7150 | { |
7151 | gfc_error ("PROTECTED at %C only allowed in specification " | |
7152 | "part of a module"); | |
7153 | return MATCH_ERROR; | |
7154 | ||
7155 | } | |
7156 | ||
524af0d6 | 7157 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED statement at %C")) |
ee7e677f TB |
7158 | return MATCH_ERROR; |
7159 | ||
7160 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7161 | { | |
7162 | return MATCH_ERROR; | |
7163 | } | |
7164 | ||
7165 | if (gfc_match_eos () == MATCH_YES) | |
7166 | goto syntax; | |
7167 | ||
7168 | for(;;) | |
7169 | { | |
7170 | m = gfc_match_symbol (&sym, 0); | |
7171 | switch (m) | |
7172 | { | |
7173 | case MATCH_YES: | |
524af0d6 | 7174 | if (!gfc_add_protected (&sym->attr, sym->name, &gfc_current_locus)) |
ee7e677f TB |
7175 | return MATCH_ERROR; |
7176 | goto next_item; | |
7177 | ||
7178 | case MATCH_NO: | |
7179 | break; | |
7180 | ||
7181 | case MATCH_ERROR: | |
7182 | return MATCH_ERROR; | |
7183 | } | |
7184 | ||
7185 | next_item: | |
7186 | if (gfc_match_eos () == MATCH_YES) | |
7187 | break; | |
7188 | if (gfc_match_char (',') != MATCH_YES) | |
7189 | goto syntax; | |
7190 | } | |
7191 | ||
7192 | return MATCH_YES; | |
7193 | ||
7194 | syntax: | |
7195 | gfc_error ("Syntax error in PROTECTED statement at %C"); | |
7196 | return MATCH_ERROR; | |
7197 | } | |
7198 | ||
7199 | ||
86bf520d | 7200 | /* The PRIVATE statement is a bit weird in that it can be an attribute |
df2fba9e | 7201 | declaration, but also works as a standalone statement inside of a |
6de9cd9a DN |
7202 | type declaration or a module. */ |
7203 | ||
7204 | match | |
636dff67 | 7205 | gfc_match_private (gfc_statement *st) |
6de9cd9a DN |
7206 | { |
7207 | ||
7208 | if (gfc_match ("private") != MATCH_YES) | |
7209 | return MATCH_NO; | |
7210 | ||
d51347f9 | 7211 | if (gfc_current_state () != COMP_MODULE |
30b608eb DK |
7212 | && !(gfc_current_state () == COMP_DERIVED |
7213 | && gfc_state_stack->previous | |
7214 | && gfc_state_stack->previous->state == COMP_MODULE) | |
7215 | && !(gfc_current_state () == COMP_DERIVED_CONTAINS | |
7216 | && gfc_state_stack->previous && gfc_state_stack->previous->previous | |
7217 | && gfc_state_stack->previous->previous->state == COMP_MODULE)) | |
d51347f9 TB |
7218 | { |
7219 | gfc_error ("PRIVATE statement at %C is only allowed in the " | |
7220 | "specification part of a module"); | |
7221 | return MATCH_ERROR; | |
7222 | } | |
7223 | ||
6de9cd9a DN |
7224 | if (gfc_current_state () == COMP_DERIVED) |
7225 | { | |
7226 | if (gfc_match_eos () == MATCH_YES) | |
7227 | { | |
7228 | *st = ST_PRIVATE; | |
7229 | return MATCH_YES; | |
7230 | } | |
7231 | ||
7232 | gfc_syntax_error (ST_PRIVATE); | |
7233 | return MATCH_ERROR; | |
7234 | } | |
7235 | ||
7236 | if (gfc_match_eos () == MATCH_YES) | |
7237 | { | |
7238 | *st = ST_PRIVATE; | |
7239 | return MATCH_YES; | |
7240 | } | |
7241 | ||
7242 | *st = ST_ATTR_DECL; | |
7243 | return access_attr_decl (ST_PRIVATE); | |
7244 | } | |
7245 | ||
7246 | ||
7247 | match | |
636dff67 | 7248 | gfc_match_public (gfc_statement *st) |
6de9cd9a DN |
7249 | { |
7250 | ||
7251 | if (gfc_match ("public") != MATCH_YES) | |
7252 | return MATCH_NO; | |
7253 | ||
d51347f9 TB |
7254 | if (gfc_current_state () != COMP_MODULE) |
7255 | { | |
7256 | gfc_error ("PUBLIC statement at %C is only allowed in the " | |
7257 | "specification part of a module"); | |
7258 | return MATCH_ERROR; | |
7259 | } | |
7260 | ||
6de9cd9a DN |
7261 | if (gfc_match_eos () == MATCH_YES) |
7262 | { | |
7263 | *st = ST_PUBLIC; | |
7264 | return MATCH_YES; | |
7265 | } | |
7266 | ||
7267 | *st = ST_ATTR_DECL; | |
7268 | return access_attr_decl (ST_PUBLIC); | |
7269 | } | |
7270 | ||
7271 | ||
7272 | /* Workhorse for gfc_match_parameter. */ | |
7273 | ||
7274 | static match | |
7275 | do_parm (void) | |
7276 | { | |
7277 | gfc_symbol *sym; | |
7278 | gfc_expr *init; | |
7279 | match m; | |
524af0d6 | 7280 | bool t; |
6de9cd9a DN |
7281 | |
7282 | m = gfc_match_symbol (&sym, 0); | |
7283 | if (m == MATCH_NO) | |
7284 | gfc_error ("Expected variable name at %C in PARAMETER statement"); | |
7285 | ||
7286 | if (m != MATCH_YES) | |
7287 | return m; | |
7288 | ||
7289 | if (gfc_match_char ('=') == MATCH_NO) | |
7290 | { | |
7291 | gfc_error ("Expected = sign in PARAMETER statement at %C"); | |
7292 | return MATCH_ERROR; | |
7293 | } | |
7294 | ||
7295 | m = gfc_match_init_expr (&init); | |
7296 | if (m == MATCH_NO) | |
7297 | gfc_error ("Expected expression at %C in PARAMETER statement"); | |
7298 | if (m != MATCH_YES) | |
7299 | return m; | |
7300 | ||
7301 | if (sym->ts.type == BT_UNKNOWN | |
524af0d6 | 7302 | && !gfc_set_default_type (sym, 1, NULL)) |
6de9cd9a DN |
7303 | { |
7304 | m = MATCH_ERROR; | |
7305 | goto cleanup; | |
7306 | } | |
7307 | ||
524af0d6 JB |
7308 | if (!gfc_check_assign_symbol (sym, NULL, init) |
7309 | || !gfc_add_flavor (&sym->attr, FL_PARAMETER, sym->name, NULL)) | |
6de9cd9a DN |
7310 | { |
7311 | m = MATCH_ERROR; | |
7312 | goto cleanup; | |
7313 | } | |
7314 | ||
1283ab12 TB |
7315 | if (sym->value) |
7316 | { | |
7317 | gfc_error ("Initializing already initialized variable at %C"); | |
7318 | m = MATCH_ERROR; | |
7319 | goto cleanup; | |
7320 | } | |
7321 | ||
7919373d | 7322 | t = add_init_expr_to_sym (sym->name, &init, &gfc_current_locus); |
524af0d6 | 7323 | return (t) ? MATCH_YES : MATCH_ERROR; |
6de9cd9a DN |
7324 | |
7325 | cleanup: | |
7326 | gfc_free_expr (init); | |
7327 | return m; | |
7328 | } | |
7329 | ||
7330 | ||
7331 | /* Match a parameter statement, with the weird syntax that these have. */ | |
7332 | ||
7333 | match | |
7334 | gfc_match_parameter (void) | |
7335 | { | |
7336 | match m; | |
7337 | ||
7338 | if (gfc_match_char ('(') == MATCH_NO) | |
7339 | return MATCH_NO; | |
7340 | ||
7341 | for (;;) | |
7342 | { | |
7343 | m = do_parm (); | |
7344 | if (m != MATCH_YES) | |
7345 | break; | |
7346 | ||
7347 | if (gfc_match (" )%t") == MATCH_YES) | |
7348 | break; | |
7349 | ||
7350 | if (gfc_match_char (',') != MATCH_YES) | |
7351 | { | |
7352 | gfc_error ("Unexpected characters in PARAMETER statement at %C"); | |
7353 | m = MATCH_ERROR; | |
7354 | break; | |
7355 | } | |
7356 | } | |
7357 | ||
7358 | return m; | |
7359 | } | |
7360 | ||
7361 | ||
7362 | /* Save statements have a special syntax. */ | |
7363 | ||
7364 | match | |
7365 | gfc_match_save (void) | |
7366 | { | |
9056bd70 TS |
7367 | char n[GFC_MAX_SYMBOL_LEN+1]; |
7368 | gfc_common_head *c; | |
6de9cd9a DN |
7369 | gfc_symbol *sym; |
7370 | match m; | |
7371 | ||
7372 | if (gfc_match_eos () == MATCH_YES) | |
7373 | { | |
7374 | if (gfc_current_ns->seen_save) | |
7375 | { | |
524af0d6 JB |
7376 | if (!gfc_notify_std (GFC_STD_LEGACY, "Blanket SAVE statement at %C " |
7377 | "follows previous SAVE statement")) | |
09e87839 | 7378 | return MATCH_ERROR; |
6de9cd9a DN |
7379 | } |
7380 | ||
7381 | gfc_current_ns->save_all = gfc_current_ns->seen_save = 1; | |
7382 | return MATCH_YES; | |
7383 | } | |
7384 | ||
7385 | if (gfc_current_ns->save_all) | |
7386 | { | |
524af0d6 JB |
7387 | if (!gfc_notify_std (GFC_STD_LEGACY, "SAVE statement at %C follows " |
7388 | "blanket SAVE statement")) | |
09e87839 | 7389 | return MATCH_ERROR; |
6de9cd9a DN |
7390 | } |
7391 | ||
7392 | gfc_match (" ::"); | |
7393 | ||
7394 | for (;;) | |
7395 | { | |
7396 | m = gfc_match_symbol (&sym, 0); | |
7397 | switch (m) | |
7398 | { | |
7399 | case MATCH_YES: | |
524af0d6 JB |
7400 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, |
7401 | &gfc_current_locus)) | |
6de9cd9a DN |
7402 | return MATCH_ERROR; |
7403 | goto next_item; | |
7404 | ||
7405 | case MATCH_NO: | |
7406 | break; | |
7407 | ||
7408 | case MATCH_ERROR: | |
7409 | return MATCH_ERROR; | |
7410 | } | |
7411 | ||
9056bd70 | 7412 | m = gfc_match (" / %n /", &n); |
6de9cd9a DN |
7413 | if (m == MATCH_ERROR) |
7414 | return MATCH_ERROR; | |
7415 | if (m == MATCH_NO) | |
7416 | goto syntax; | |
7417 | ||
53814b8f | 7418 | c = gfc_get_common (n, 0); |
9056bd70 TS |
7419 | c->saved = 1; |
7420 | ||
6de9cd9a DN |
7421 | gfc_current_ns->seen_save = 1; |
7422 | ||
7423 | next_item: | |
7424 | if (gfc_match_eos () == MATCH_YES) | |
7425 | break; | |
7426 | if (gfc_match_char (',') != MATCH_YES) | |
7427 | goto syntax; | |
7428 | } | |
7429 | ||
7430 | return MATCH_YES; | |
7431 | ||
7432 | syntax: | |
7433 | gfc_error ("Syntax error in SAVE statement at %C"); | |
7434 | return MATCH_ERROR; | |
7435 | } | |
7436 | ||
7437 | ||
06469efd PT |
7438 | match |
7439 | gfc_match_value (void) | |
7440 | { | |
7441 | gfc_symbol *sym; | |
7442 | match m; | |
7443 | ||
9abe5e56 DK |
7444 | /* This is not allowed within a BLOCK construct! */ |
7445 | if (gfc_current_state () == COMP_BLOCK) | |
7446 | { | |
7447 | gfc_error ("VALUE is not allowed inside of BLOCK at %C"); | |
7448 | return MATCH_ERROR; | |
7449 | } | |
7450 | ||
524af0d6 | 7451 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE statement at %C")) |
06469efd PT |
7452 | return MATCH_ERROR; |
7453 | ||
7454 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7455 | { | |
7456 | return MATCH_ERROR; | |
7457 | } | |
7458 | ||
7459 | if (gfc_match_eos () == MATCH_YES) | |
7460 | goto syntax; | |
7461 | ||
7462 | for(;;) | |
7463 | { | |
7464 | m = gfc_match_symbol (&sym, 0); | |
7465 | switch (m) | |
7466 | { | |
7467 | case MATCH_YES: | |
524af0d6 | 7468 | if (!gfc_add_value (&sym->attr, sym->name, &gfc_current_locus)) |
06469efd PT |
7469 | return MATCH_ERROR; |
7470 | goto next_item; | |
7471 | ||
7472 | case MATCH_NO: | |
7473 | break; | |
7474 | ||
7475 | case MATCH_ERROR: | |
7476 | return MATCH_ERROR; | |
7477 | } | |
7478 | ||
7479 | next_item: | |
7480 | if (gfc_match_eos () == MATCH_YES) | |
7481 | break; | |
7482 | if (gfc_match_char (',') != MATCH_YES) | |
7483 | goto syntax; | |
7484 | } | |
7485 | ||
7486 | return MATCH_YES; | |
7487 | ||
7488 | syntax: | |
7489 | gfc_error ("Syntax error in VALUE statement at %C"); | |
7490 | return MATCH_ERROR; | |
7491 | } | |
7492 | ||
66e4ab31 | 7493 | |
775e6c3a TB |
7494 | match |
7495 | gfc_match_volatile (void) | |
7496 | { | |
7497 | gfc_symbol *sym; | |
7498 | match m; | |
7499 | ||
524af0d6 | 7500 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE statement at %C")) |
775e6c3a TB |
7501 | return MATCH_ERROR; |
7502 | ||
7503 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7504 | { | |
7505 | return MATCH_ERROR; | |
7506 | } | |
7507 | ||
7508 | if (gfc_match_eos () == MATCH_YES) | |
7509 | goto syntax; | |
7510 | ||
7511 | for(;;) | |
7512 | { | |
f5acf0f2 | 7513 | /* VOLATILE is special because it can be added to host-associated |
1cc0e193 | 7514 | symbols locally. Except for coarrays. */ |
9bce3c1c | 7515 | m = gfc_match_symbol (&sym, 1); |
775e6c3a TB |
7516 | switch (m) |
7517 | { | |
7518 | case MATCH_YES: | |
be59db2d TB |
7519 | /* F2008, C560+C561. VOLATILE for host-/use-associated variable or |
7520 | for variable in a BLOCK which is defined outside of the BLOCK. */ | |
7521 | if (sym->ns != gfc_current_ns && sym->attr.codimension) | |
7522 | { | |
c4100eae | 7523 | gfc_error ("Specifying VOLATILE for coarray variable %qs at " |
be59db2d TB |
7524 | "%C, which is use-/host-associated", sym->name); |
7525 | return MATCH_ERROR; | |
7526 | } | |
524af0d6 | 7527 | if (!gfc_add_volatile (&sym->attr, sym->name, &gfc_current_locus)) |
775e6c3a TB |
7528 | return MATCH_ERROR; |
7529 | goto next_item; | |
7530 | ||
7531 | case MATCH_NO: | |
7532 | break; | |
7533 | ||
7534 | case MATCH_ERROR: | |
7535 | return MATCH_ERROR; | |
7536 | } | |
7537 | ||
7538 | next_item: | |
7539 | if (gfc_match_eos () == MATCH_YES) | |
7540 | break; | |
7541 | if (gfc_match_char (',') != MATCH_YES) | |
7542 | goto syntax; | |
7543 | } | |
7544 | ||
7545 | return MATCH_YES; | |
7546 | ||
7547 | syntax: | |
7548 | gfc_error ("Syntax error in VOLATILE statement at %C"); | |
7549 | return MATCH_ERROR; | |
7550 | } | |
7551 | ||
7552 | ||
1eee5628 TB |
7553 | match |
7554 | gfc_match_asynchronous (void) | |
7555 | { | |
7556 | gfc_symbol *sym; | |
7557 | match m; | |
7558 | ||
524af0d6 | 7559 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS statement at %C")) |
1eee5628 TB |
7560 | return MATCH_ERROR; |
7561 | ||
7562 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7563 | { | |
7564 | return MATCH_ERROR; | |
7565 | } | |
7566 | ||
7567 | if (gfc_match_eos () == MATCH_YES) | |
7568 | goto syntax; | |
7569 | ||
7570 | for(;;) | |
7571 | { | |
f5acf0f2 | 7572 | /* ASYNCHRONOUS is special because it can be added to host-associated |
1eee5628 TB |
7573 | symbols locally. */ |
7574 | m = gfc_match_symbol (&sym, 1); | |
7575 | switch (m) | |
7576 | { | |
7577 | case MATCH_YES: | |
524af0d6 | 7578 | if (!gfc_add_asynchronous (&sym->attr, sym->name, &gfc_current_locus)) |
1eee5628 TB |
7579 | return MATCH_ERROR; |
7580 | goto next_item; | |
7581 | ||
7582 | case MATCH_NO: | |
7583 | break; | |
7584 | ||
7585 | case MATCH_ERROR: | |
7586 | return MATCH_ERROR; | |
7587 | } | |
7588 | ||
7589 | next_item: | |
7590 | if (gfc_match_eos () == MATCH_YES) | |
7591 | break; | |
7592 | if (gfc_match_char (',') != MATCH_YES) | |
7593 | goto syntax; | |
7594 | } | |
7595 | ||
7596 | return MATCH_YES; | |
7597 | ||
7598 | syntax: | |
7599 | gfc_error ("Syntax error in ASYNCHRONOUS statement at %C"); | |
7600 | return MATCH_ERROR; | |
7601 | } | |
7602 | ||
7603 | ||
4668d6f9 PT |
7604 | /* Match a module procedure statement in a submodule. */ |
7605 | ||
7606 | match | |
7607 | gfc_match_submod_proc (void) | |
7608 | { | |
7609 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7610 | gfc_symbol *sym, *fsym; | |
7611 | match m; | |
7612 | gfc_formal_arglist *formal, *head, *tail; | |
7613 | ||
7614 | if (gfc_current_state () != COMP_CONTAINS | |
7615 | || !(gfc_state_stack->previous | |
7616 | && gfc_state_stack->previous->state == COMP_SUBMODULE)) | |
7617 | return MATCH_NO; | |
7618 | ||
7619 | m = gfc_match (" module% procedure% %n", name); | |
7620 | if (m != MATCH_YES) | |
7621 | return m; | |
7622 | ||
7623 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE PROCEDURE declaration " | |
7624 | "at %C")) | |
7625 | return MATCH_ERROR; | |
7626 | ||
7627 | if (get_proc_name (name, &sym, false)) | |
7628 | return MATCH_ERROR; | |
7629 | ||
7630 | /* Make sure that the result field is appropriately filled, even though | |
7631 | the result symbol will be replaced later on. */ | |
7632 | if (sym->ts.interface->attr.function) | |
7633 | { | |
7634 | if (sym->ts.interface->result | |
7635 | && sym->ts.interface->result != sym->ts.interface) | |
7636 | sym->result= sym->ts.interface->result; | |
7637 | else | |
7638 | sym->result = sym; | |
7639 | } | |
7640 | ||
7641 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if | |
7642 | the symbol existed before. */ | |
7643 | sym->declared_at = gfc_current_locus; | |
7644 | ||
7645 | if (!sym->attr.module_procedure) | |
7646 | return MATCH_ERROR; | |
7647 | ||
7648 | /* Signal match_end to expect "end procedure". */ | |
7649 | sym->abr_modproc_decl = 1; | |
7650 | ||
7651 | /* Change from IFSRC_IFBODY coming from the interface declaration. */ | |
7652 | sym->attr.if_source = IFSRC_DECL; | |
7653 | ||
7654 | gfc_new_block = sym; | |
7655 | ||
7656 | /* Make a new formal arglist with the symbols in the procedure | |
7657 | namespace. */ | |
7658 | head = tail = NULL; | |
7659 | for (formal = sym->formal; formal && formal->sym; formal = formal->next) | |
7660 | { | |
7661 | if (formal == sym->formal) | |
7662 | head = tail = gfc_get_formal_arglist (); | |
7663 | else | |
7664 | { | |
7665 | tail->next = gfc_get_formal_arglist (); | |
7666 | tail = tail->next; | |
7667 | } | |
7668 | ||
7669 | if (gfc_copy_dummy_sym (&fsym, formal->sym, 0)) | |
7670 | goto cleanup; | |
7671 | ||
7672 | tail->sym = fsym; | |
7673 | gfc_set_sym_referenced (fsym); | |
7674 | } | |
7675 | ||
7676 | /* The dummy symbols get cleaned up, when the formal_namespace of the | |
7677 | interface declaration is cleared. This allows us to add the | |
7678 | explicit interface as is done for other type of procedure. */ | |
7679 | if (!gfc_add_explicit_interface (sym, IFSRC_DECL, head, | |
7680 | &gfc_current_locus)) | |
7681 | return MATCH_ERROR; | |
7682 | ||
7683 | if (gfc_match_eos () != MATCH_YES) | |
7684 | { | |
7685 | gfc_syntax_error (ST_MODULE_PROC); | |
7686 | return MATCH_ERROR; | |
7687 | } | |
7688 | ||
7689 | return MATCH_YES; | |
7690 | ||
7691 | cleanup: | |
7692 | gfc_free_formal_arglist (head); | |
7693 | return MATCH_ERROR; | |
7694 | } | |
7695 | ||
7696 | ||
6de9cd9a DN |
7697 | /* Match a module procedure statement. Note that we have to modify |
7698 | symbols in the parent's namespace because the current one was there | |
49de9e73 | 7699 | to receive symbols that are in an interface's formal argument list. */ |
6de9cd9a DN |
7700 | |
7701 | match | |
7702 | gfc_match_modproc (void) | |
7703 | { | |
7704 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7705 | gfc_symbol *sym; | |
7706 | match m; | |
162b5a21 | 7707 | locus old_locus; |
060fca4a | 7708 | gfc_namespace *module_ns; |
2b77e908 | 7709 | gfc_interface *old_interface_head, *interface; |
6de9cd9a DN |
7710 | |
7711 | if (gfc_state_stack->state != COMP_INTERFACE | |
7712 | || gfc_state_stack->previous == NULL | |
129d15a3 JW |
7713 | || current_interface.type == INTERFACE_NAMELESS |
7714 | || current_interface.type == INTERFACE_ABSTRACT) | |
6de9cd9a | 7715 | { |
636dff67 SK |
7716 | gfc_error ("MODULE PROCEDURE at %C must be in a generic module " |
7717 | "interface"); | |
6de9cd9a DN |
7718 | return MATCH_ERROR; |
7719 | } | |
7720 | ||
060fca4a PT |
7721 | module_ns = gfc_current_ns->parent; |
7722 | for (; module_ns; module_ns = module_ns->parent) | |
43dfd40c SK |
7723 | if (module_ns->proc_name->attr.flavor == FL_MODULE |
7724 | || module_ns->proc_name->attr.flavor == FL_PROGRAM | |
7725 | || (module_ns->proc_name->attr.flavor == FL_PROCEDURE | |
7726 | && !module_ns->proc_name->attr.contained)) | |
060fca4a PT |
7727 | break; |
7728 | ||
7729 | if (module_ns == NULL) | |
7730 | return MATCH_ERROR; | |
7731 | ||
2b77e908 FXC |
7732 | /* Store the current state of the interface. We will need it if we |
7733 | end up with a syntax error and need to recover. */ | |
7734 | old_interface_head = gfc_current_interface_head (); | |
7735 | ||
162b5a21 SK |
7736 | /* Check if the F2008 optional double colon appears. */ |
7737 | gfc_gobble_whitespace (); | |
7738 | old_locus = gfc_current_locus; | |
7739 | if (gfc_match ("::") == MATCH_YES) | |
7740 | { | |
524af0d6 JB |
7741 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
7742 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
162b5a21 SK |
7743 | return MATCH_ERROR; |
7744 | } | |
7745 | else | |
7746 | gfc_current_locus = old_locus; | |
f5acf0f2 | 7747 | |
6de9cd9a DN |
7748 | for (;;) |
7749 | { | |
2b77e908 | 7750 | bool last = false; |
162b5a21 | 7751 | old_locus = gfc_current_locus; |
2b77e908 | 7752 | |
6de9cd9a DN |
7753 | m = gfc_match_name (name); |
7754 | if (m == MATCH_NO) | |
7755 | goto syntax; | |
7756 | if (m != MATCH_YES) | |
7757 | return MATCH_ERROR; | |
7758 | ||
2b77e908 FXC |
7759 | /* Check for syntax error before starting to add symbols to the |
7760 | current namespace. */ | |
7761 | if (gfc_match_eos () == MATCH_YES) | |
7762 | last = true; | |
162b5a21 | 7763 | |
2b77e908 FXC |
7764 | if (!last && gfc_match_char (',') != MATCH_YES) |
7765 | goto syntax; | |
7766 | ||
7767 | /* Now we're sure the syntax is valid, we process this item | |
7768 | further. */ | |
060fca4a | 7769 | if (gfc_get_symbol (name, module_ns, &sym)) |
6de9cd9a DN |
7770 | return MATCH_ERROR; |
7771 | ||
43dfd40c SK |
7772 | if (sym->attr.intrinsic) |
7773 | { | |
7774 | gfc_error ("Intrinsic procedure at %L cannot be a MODULE " | |
7775 | "PROCEDURE", &old_locus); | |
7776 | return MATCH_ERROR; | |
7777 | } | |
7778 | ||
6de9cd9a | 7779 | if (sym->attr.proc != PROC_MODULE |
524af0d6 | 7780 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
6de9cd9a DN |
7781 | return MATCH_ERROR; |
7782 | ||
524af0d6 | 7783 | if (!gfc_add_interface (sym)) |
6de9cd9a DN |
7784 | return MATCH_ERROR; |
7785 | ||
71f77fd7 | 7786 | sym->attr.mod_proc = 1; |
43dfd40c | 7787 | sym->declared_at = old_locus; |
71f77fd7 | 7788 | |
2b77e908 | 7789 | if (last) |
6de9cd9a | 7790 | break; |
6de9cd9a DN |
7791 | } |
7792 | ||
7793 | return MATCH_YES; | |
7794 | ||
7795 | syntax: | |
2b77e908 FXC |
7796 | /* Restore the previous state of the interface. */ |
7797 | interface = gfc_current_interface_head (); | |
7798 | gfc_set_current_interface_head (old_interface_head); | |
7799 | ||
7800 | /* Free the new interfaces. */ | |
7801 | while (interface != old_interface_head) | |
7802 | { | |
7803 | gfc_interface *i = interface->next; | |
cede9502 | 7804 | free (interface); |
2b77e908 FXC |
7805 | interface = i; |
7806 | } | |
7807 | ||
7808 | /* And issue a syntax error. */ | |
6de9cd9a DN |
7809 | gfc_syntax_error (ST_MODULE_PROC); |
7810 | return MATCH_ERROR; | |
7811 | } | |
7812 | ||
7813 | ||
7d1f1e61 | 7814 | /* Check a derived type that is being extended. */ |
42e3d759 | 7815 | |
7d1f1e61 PT |
7816 | static gfc_symbol* |
7817 | check_extended_derived_type (char *name) | |
7818 | { | |
7819 | gfc_symbol *extended; | |
7820 | ||
7821 | if (gfc_find_symbol (name, gfc_current_ns, 1, &extended)) | |
7822 | { | |
7823 | gfc_error ("Ambiguous symbol in TYPE definition at %C"); | |
7824 | return NULL; | |
7825 | } | |
7826 | ||
42e3d759 JW |
7827 | extended = gfc_find_dt_in_generic (extended); |
7828 | ||
7829 | /* F08:C428. */ | |
7d1f1e61 PT |
7830 | if (!extended) |
7831 | { | |
c4100eae | 7832 | gfc_error ("Symbol %qs at %C has not been previously defined", name); |
7d1f1e61 PT |
7833 | return NULL; |
7834 | } | |
7835 | ||
7836 | if (extended->attr.flavor != FL_DERIVED) | |
7837 | { | |
c4100eae | 7838 | gfc_error ("%qs in EXTENDS expression at %C is not a " |
7d1f1e61 PT |
7839 | "derived type", name); |
7840 | return NULL; | |
7841 | } | |
7842 | ||
7843 | if (extended->attr.is_bind_c) | |
7844 | { | |
c4100eae | 7845 | gfc_error ("%qs cannot be extended at %C because it " |
7d1f1e61 PT |
7846 | "is BIND(C)", extended->name); |
7847 | return NULL; | |
7848 | } | |
7849 | ||
7850 | if (extended->attr.sequence) | |
7851 | { | |
c4100eae | 7852 | gfc_error ("%qs cannot be extended at %C because it " |
7d1f1e61 PT |
7853 | "is a SEQUENCE type", extended->name); |
7854 | return NULL; | |
7855 | } | |
7856 | ||
7857 | return extended; | |
7858 | } | |
7859 | ||
7860 | ||
a8b3b0b6 CR |
7861 | /* Match the optional attribute specifiers for a type declaration. |
7862 | Return MATCH_ERROR if an error is encountered in one of the handled | |
7863 | attributes (public, private, bind(c)), MATCH_NO if what's found is | |
7864 | not a handled attribute, and MATCH_YES otherwise. TODO: More error | |
7865 | checking on attribute conflicts needs to be done. */ | |
6de9cd9a DN |
7866 | |
7867 | match | |
7d1f1e61 | 7868 | gfc_get_type_attr_spec (symbol_attribute *attr, char *name) |
6de9cd9a | 7869 | { |
a8b3b0b6 | 7870 | /* See if the derived type is marked as private. */ |
6de9cd9a DN |
7871 | if (gfc_match (" , private") == MATCH_YES) |
7872 | { | |
d51347f9 | 7873 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 7874 | { |
d51347f9 TB |
7875 | gfc_error ("Derived type at %C can only be PRIVATE in the " |
7876 | "specification part of a module"); | |
6de9cd9a DN |
7877 | return MATCH_ERROR; |
7878 | } | |
7879 | ||
524af0d6 | 7880 | if (!gfc_add_access (attr, ACCESS_PRIVATE, NULL, NULL)) |
6de9cd9a | 7881 | return MATCH_ERROR; |
6de9cd9a | 7882 | } |
a8b3b0b6 | 7883 | else if (gfc_match (" , public") == MATCH_YES) |
6de9cd9a | 7884 | { |
d51347f9 | 7885 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 7886 | { |
d51347f9 TB |
7887 | gfc_error ("Derived type at %C can only be PUBLIC in the " |
7888 | "specification part of a module"); | |
6de9cd9a DN |
7889 | return MATCH_ERROR; |
7890 | } | |
7891 | ||
524af0d6 | 7892 | if (!gfc_add_access (attr, ACCESS_PUBLIC, NULL, NULL)) |
6de9cd9a | 7893 | return MATCH_ERROR; |
6de9cd9a | 7894 | } |
52f49934 | 7895 | else if (gfc_match (" , bind ( c )") == MATCH_YES) |
a8b3b0b6 CR |
7896 | { |
7897 | /* If the type is defined to be bind(c) it then needs to make | |
7898 | sure that all fields are interoperable. This will | |
7899 | need to be a semantic check on the finished derived type. | |
7900 | See 15.2.3 (lines 9-12) of F2003 draft. */ | |
524af0d6 | 7901 | if (!gfc_add_is_bind_c (attr, NULL, &gfc_current_locus, 0)) |
a8b3b0b6 CR |
7902 | return MATCH_ERROR; |
7903 | ||
7904 | /* TODO: attr conflicts need to be checked, probably in symbol.c. */ | |
7905 | } | |
52f49934 DK |
7906 | else if (gfc_match (" , abstract") == MATCH_YES) |
7907 | { | |
524af0d6 | 7908 | if (!gfc_notify_std (GFC_STD_F2003, "ABSTRACT type at %C")) |
52f49934 DK |
7909 | return MATCH_ERROR; |
7910 | ||
524af0d6 | 7911 | if (!gfc_add_abstract (attr, &gfc_current_locus)) |
52f49934 DK |
7912 | return MATCH_ERROR; |
7913 | } | |
524af0d6 | 7914 | else if (name && gfc_match (" , extends ( %n )", name) == MATCH_YES) |
7d1f1e61 | 7915 | { |
524af0d6 | 7916 | if (!gfc_add_extension (attr, &gfc_current_locus)) |
7d1f1e61 PT |
7917 | return MATCH_ERROR; |
7918 | } | |
a8b3b0b6 CR |
7919 | else |
7920 | return MATCH_NO; | |
7921 | ||
7922 | /* If we get here, something matched. */ | |
7923 | return MATCH_YES; | |
7924 | } | |
7925 | ||
7926 | ||
7927 | /* Match the beginning of a derived type declaration. If a type name | |
7928 | was the result of a function, then it is possible to have a symbol | |
7929 | already to be known as a derived type yet have no components. */ | |
7930 | ||
7931 | match | |
7932 | gfc_match_derived_decl (void) | |
7933 | { | |
7934 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7d1f1e61 | 7935 | char parent[GFC_MAX_SYMBOL_LEN + 1]; |
a8b3b0b6 | 7936 | symbol_attribute attr; |
c3f34952 | 7937 | gfc_symbol *sym, *gensym; |
7d1f1e61 | 7938 | gfc_symbol *extended; |
a8b3b0b6 CR |
7939 | match m; |
7940 | match is_type_attr_spec = MATCH_NO; | |
e7303e85 | 7941 | bool seen_attr = false; |
c3f34952 | 7942 | gfc_interface *intr = NULL, *head; |
a8b3b0b6 CR |
7943 | |
7944 | if (gfc_current_state () == COMP_DERIVED) | |
7945 | return MATCH_NO; | |
7946 | ||
7d1f1e61 PT |
7947 | name[0] = '\0'; |
7948 | parent[0] = '\0'; | |
a8b3b0b6 | 7949 | gfc_clear_attr (&attr); |
7d1f1e61 | 7950 | extended = NULL; |
a8b3b0b6 CR |
7951 | |
7952 | do | |
7953 | { | |
7d1f1e61 | 7954 | is_type_attr_spec = gfc_get_type_attr_spec (&attr, parent); |
a8b3b0b6 CR |
7955 | if (is_type_attr_spec == MATCH_ERROR) |
7956 | return MATCH_ERROR; | |
e7303e85 FXC |
7957 | if (is_type_attr_spec == MATCH_YES) |
7958 | seen_attr = true; | |
a8b3b0b6 | 7959 | } while (is_type_attr_spec == MATCH_YES); |
6de9cd9a | 7960 | |
63a3341a PT |
7961 | /* Deal with derived type extensions. The extension attribute has |
7962 | been added to 'attr' but now the parent type must be found and | |
7963 | checked. */ | |
7d1f1e61 PT |
7964 | if (parent[0]) |
7965 | extended = check_extended_derived_type (parent); | |
7966 | ||
7967 | if (parent[0] && !extended) | |
7968 | return MATCH_ERROR; | |
7969 | ||
e7303e85 | 7970 | if (gfc_match (" ::") != MATCH_YES && seen_attr) |
6de9cd9a DN |
7971 | { |
7972 | gfc_error ("Expected :: in TYPE definition at %C"); | |
7973 | return MATCH_ERROR; | |
7974 | } | |
7975 | ||
7976 | m = gfc_match (" %n%t", name); | |
7977 | if (m != MATCH_YES) | |
7978 | return m; | |
7979 | ||
e9c06563 TB |
7980 | /* Make sure the name is not the name of an intrinsic type. */ |
7981 | if (gfc_is_intrinsic_typename (name)) | |
6de9cd9a | 7982 | { |
c4100eae | 7983 | gfc_error ("Type name %qs at %C cannot be the same as an intrinsic " |
636dff67 | 7984 | "type", name); |
6de9cd9a DN |
7985 | return MATCH_ERROR; |
7986 | } | |
7987 | ||
c3f34952 | 7988 | if (gfc_get_symbol (name, NULL, &gensym)) |
6de9cd9a DN |
7989 | return MATCH_ERROR; |
7990 | ||
c3f34952 | 7991 | if (!gensym->attr.generic && gensym->ts.type != BT_UNKNOWN) |
6de9cd9a | 7992 | { |
c4100eae | 7993 | gfc_error ("Derived type name %qs at %C already has a basic type " |
c3f34952 TB |
7994 | "of %s", gensym->name, gfc_typename (&gensym->ts)); |
7995 | return MATCH_ERROR; | |
7996 | } | |
7997 | ||
7998 | if (!gensym->attr.generic | |
524af0d6 | 7999 | && !gfc_add_generic (&gensym->attr, gensym->name, NULL)) |
c3f34952 TB |
8000 | return MATCH_ERROR; |
8001 | ||
8002 | if (!gensym->attr.function | |
524af0d6 | 8003 | && !gfc_add_function (&gensym->attr, gensym->name, NULL)) |
c3f34952 TB |
8004 | return MATCH_ERROR; |
8005 | ||
8006 | sym = gfc_find_dt_in_generic (gensym); | |
8007 | ||
8008 | if (sym && (sym->components != NULL || sym->attr.zero_comp)) | |
8009 | { | |
c4100eae | 8010 | gfc_error ("Derived type definition of %qs at %C has already been " |
c3f34952 | 8011 | "defined", sym->name); |
6de9cd9a DN |
8012 | return MATCH_ERROR; |
8013 | } | |
8014 | ||
c3f34952 TB |
8015 | if (!sym) |
8016 | { | |
8017 | /* Use upper case to save the actual derived-type symbol. */ | |
8018 | gfc_get_symbol (gfc_get_string ("%c%s", | |
8019 | (char) TOUPPER ((unsigned char) gensym->name[0]), | |
8020 | &gensym->name[1]), NULL, &sym); | |
8021 | sym->name = gfc_get_string (gensym->name); | |
8022 | head = gensym->generic; | |
8023 | intr = gfc_get_interface (); | |
8024 | intr->sym = sym; | |
8025 | intr->where = gfc_current_locus; | |
8026 | intr->sym->declared_at = gfc_current_locus; | |
8027 | intr->next = head; | |
8028 | gensym->generic = intr; | |
8029 | gensym->attr.if_source = IFSRC_DECL; | |
8030 | } | |
8031 | ||
6de9cd9a DN |
8032 | /* The symbol may already have the derived attribute without the |
8033 | components. The ways this can happen is via a function | |
8034 | definition, an INTRINSIC statement or a subtype in another | |
8035 | derived type that is a pointer. The first part of the AND clause | |
df2fba9e | 8036 | is true if the symbol is not the return value of a function. */ |
6de9cd9a | 8037 | if (sym->attr.flavor != FL_DERIVED |
524af0d6 | 8038 | && !gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL)) |
6de9cd9a DN |
8039 | return MATCH_ERROR; |
8040 | ||
6de9cd9a | 8041 | if (attr.access != ACCESS_UNKNOWN |
524af0d6 | 8042 | && !gfc_add_access (&sym->attr, attr.access, sym->name, NULL)) |
6de9cd9a | 8043 | return MATCH_ERROR; |
c3f34952 TB |
8044 | else if (sym->attr.access == ACCESS_UNKNOWN |
8045 | && gensym->attr.access != ACCESS_UNKNOWN | |
524af0d6 JB |
8046 | && !gfc_add_access (&sym->attr, gensym->attr.access, |
8047 | sym->name, NULL)) | |
c3f34952 TB |
8048 | return MATCH_ERROR; |
8049 | ||
8050 | if (sym->attr.access != ACCESS_UNKNOWN | |
8051 | && gensym->attr.access == ACCESS_UNKNOWN) | |
8052 | gensym->attr.access = sym->attr.access; | |
6de9cd9a | 8053 | |
a8b3b0b6 CR |
8054 | /* See if the derived type was labeled as bind(c). */ |
8055 | if (attr.is_bind_c != 0) | |
8056 | sym->attr.is_bind_c = attr.is_bind_c; | |
8057 | ||
34523524 DK |
8058 | /* Construct the f2k_derived namespace if it is not yet there. */ |
8059 | if (!sym->f2k_derived) | |
8060 | sym->f2k_derived = gfc_get_namespace (NULL, 0); | |
f5acf0f2 | 8061 | |
7d1f1e61 PT |
8062 | if (extended && !sym->components) |
8063 | { | |
8064 | gfc_component *p; | |
7d1f1e61 PT |
8065 | |
8066 | /* Add the extended derived type as the first component. */ | |
8067 | gfc_add_component (sym, parent, &p); | |
7d1f1e61 PT |
8068 | extended->refs++; |
8069 | gfc_set_sym_referenced (extended); | |
8070 | ||
8071 | p->ts.type = BT_DERIVED; | |
bc21d315 | 8072 | p->ts.u.derived = extended; |
7d1f1e61 | 8073 | p->initializer = gfc_default_initializer (&p->ts); |
f5acf0f2 | 8074 | |
7c1dab0d JW |
8075 | /* Set extension level. */ |
8076 | if (extended->attr.extension == 255) | |
8077 | { | |
8078 | /* Since the extension field is 8 bit wide, we can only have | |
8079 | up to 255 extension levels. */ | |
c4100eae | 8080 | gfc_error ("Maximum extension level reached with type %qs at %L", |
7c1dab0d JW |
8081 | extended->name, &extended->declared_at); |
8082 | return MATCH_ERROR; | |
8083 | } | |
8084 | sym->attr.extension = extended->attr.extension + 1; | |
7d1f1e61 PT |
8085 | |
8086 | /* Provide the links between the extended type and its extension. */ | |
8087 | if (!extended->f2k_derived) | |
8088 | extended->f2k_derived = gfc_get_namespace (NULL, 0); | |
7d1f1e61 PT |
8089 | } |
8090 | ||
7c1dab0d JW |
8091 | if (!sym->hash_value) |
8092 | /* Set the hash for the compound name for this type. */ | |
4fa02692 | 8093 | sym->hash_value = gfc_hash_value (sym); |
cf2b3c22 | 8094 | |
52f49934 DK |
8095 | /* Take over the ABSTRACT attribute. */ |
8096 | sym->attr.abstract = attr.abstract; | |
8097 | ||
6de9cd9a DN |
8098 | gfc_new_block = sym; |
8099 | ||
8100 | return MATCH_YES; | |
8101 | } | |
83d890b9 AL |
8102 | |
8103 | ||
f5acf0f2 | 8104 | /* Cray Pointees can be declared as: |
b3aefde2 | 8105 | pointer (ipt, a (n,m,...,*)) */ |
83d890b9 | 8106 | |
32e8bb8e | 8107 | match |
83d890b9 AL |
8108 | gfc_mod_pointee_as (gfc_array_spec *as) |
8109 | { | |
8110 | as->cray_pointee = true; /* This will be useful to know later. */ | |
8111 | if (as->type == AS_ASSUMED_SIZE) | |
b3aefde2 | 8112 | as->cp_was_assumed = true; |
83d890b9 AL |
8113 | else if (as->type == AS_ASSUMED_SHAPE) |
8114 | { | |
8115 | gfc_error ("Cray Pointee at %C cannot be assumed shape array"); | |
8116 | return MATCH_ERROR; | |
8117 | } | |
8118 | return MATCH_YES; | |
8119 | } | |
25d8f0a2 TS |
8120 | |
8121 | ||
f5acf0f2 PT |
8122 | /* Match the enum definition statement, here we are trying to match |
8123 | the first line of enum definition statement. | |
25d8f0a2 TS |
8124 | Returns MATCH_YES if match is found. */ |
8125 | ||
8126 | match | |
8127 | gfc_match_enum (void) | |
8128 | { | |
8129 | match m; | |
f5acf0f2 | 8130 | |
25d8f0a2 TS |
8131 | m = gfc_match_eos (); |
8132 | if (m != MATCH_YES) | |
8133 | return m; | |
8134 | ||
524af0d6 | 8135 | if (!gfc_notify_std (GFC_STD_F2003, "ENUM and ENUMERATOR at %C")) |
25d8f0a2 TS |
8136 | return MATCH_ERROR; |
8137 | ||
8138 | return MATCH_YES; | |
8139 | } | |
8140 | ||
8141 | ||
31224396 SK |
8142 | /* Returns an initializer whose value is one higher than the value of the |
8143 | LAST_INITIALIZER argument. If the argument is NULL, the | |
8144 | initializers value will be set to zero. The initializer's kind | |
8145 | will be set to gfc_c_int_kind. | |
8146 | ||
8147 | If -fshort-enums is given, the appropriate kind will be selected | |
8148 | later after all enumerators have been parsed. A warning is issued | |
8149 | here if an initializer exceeds gfc_c_int_kind. */ | |
8150 | ||
8151 | static gfc_expr * | |
8152 | enum_initializer (gfc_expr *last_initializer, locus where) | |
8153 | { | |
8154 | gfc_expr *result; | |
b7e75771 | 8155 | result = gfc_get_constant_expr (BT_INTEGER, gfc_c_int_kind, &where); |
31224396 SK |
8156 | |
8157 | mpz_init (result->value.integer); | |
8158 | ||
8159 | if (last_initializer != NULL) | |
8160 | { | |
8161 | mpz_add_ui (result->value.integer, last_initializer->value.integer, 1); | |
8162 | result->where = last_initializer->where; | |
8163 | ||
8164 | if (gfc_check_integer_range (result->value.integer, | |
8165 | gfc_c_int_kind) != ARITH_OK) | |
8166 | { | |
8167 | gfc_error ("Enumerator exceeds the C integer type at %C"); | |
8168 | return NULL; | |
8169 | } | |
8170 | } | |
8171 | else | |
8172 | { | |
8173 | /* Control comes here, if it's the very first enumerator and no | |
8174 | initializer has been given. It will be initialized to zero. */ | |
8175 | mpz_set_si (result->value.integer, 0); | |
8176 | } | |
8177 | ||
8178 | return result; | |
8179 | } | |
8180 | ||
8181 | ||
6133c68a TS |
8182 | /* Match a variable name with an optional initializer. When this |
8183 | subroutine is called, a variable is expected to be parsed next. | |
8184 | Depending on what is happening at the moment, updates either the | |
8185 | symbol table or the current interface. */ | |
8186 | ||
8187 | static match | |
8188 | enumerator_decl (void) | |
8189 | { | |
8190 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8191 | gfc_expr *initializer; | |
8192 | gfc_array_spec *as = NULL; | |
8193 | gfc_symbol *sym; | |
8194 | locus var_locus; | |
8195 | match m; | |
524af0d6 | 8196 | bool t; |
6133c68a TS |
8197 | locus old_locus; |
8198 | ||
8199 | initializer = NULL; | |
8200 | old_locus = gfc_current_locus; | |
8201 | ||
8202 | /* When we get here, we've just matched a list of attributes and | |
8203 | maybe a type and a double colon. The next thing we expect to see | |
8204 | is the name of the symbol. */ | |
8205 | m = gfc_match_name (name); | |
8206 | if (m != MATCH_YES) | |
8207 | goto cleanup; | |
8208 | ||
8209 | var_locus = gfc_current_locus; | |
8210 | ||
8211 | /* OK, we've successfully matched the declaration. Now put the | |
8212 | symbol in the current namespace. If we fail to create the symbol, | |
8213 | bail out. */ | |
524af0d6 | 8214 | if (!build_sym (name, NULL, false, &as, &var_locus)) |
6133c68a TS |
8215 | { |
8216 | m = MATCH_ERROR; | |
8217 | goto cleanup; | |
8218 | } | |
8219 | ||
8220 | /* The double colon must be present in order to have initializers. | |
8221 | Otherwise the statement is ambiguous with an assignment statement. */ | |
8222 | if (colon_seen) | |
8223 | { | |
8224 | if (gfc_match_char ('=') == MATCH_YES) | |
8225 | { | |
8226 | m = gfc_match_init_expr (&initializer); | |
8227 | if (m == MATCH_NO) | |
8228 | { | |
8229 | gfc_error ("Expected an initialization expression at %C"); | |
8230 | m = MATCH_ERROR; | |
8231 | } | |
8232 | ||
8233 | if (m != MATCH_YES) | |
8234 | goto cleanup; | |
8235 | } | |
8236 | } | |
8237 | ||
8238 | /* If we do not have an initializer, the initialization value of the | |
8239 | previous enumerator (stored in last_initializer) is incremented | |
8240 | by 1 and is used to initialize the current enumerator. */ | |
8241 | if (initializer == NULL) | |
31224396 | 8242 | initializer = enum_initializer (last_initializer, old_locus); |
d51347f9 | 8243 | |
6133c68a TS |
8244 | if (initializer == NULL || initializer->ts.type != BT_INTEGER) |
8245 | { | |
01e64c3d JJ |
8246 | gfc_error ("ENUMERATOR %L not initialized with integer expression", |
8247 | &var_locus); | |
d51347f9 | 8248 | m = MATCH_ERROR; |
6133c68a TS |
8249 | goto cleanup; |
8250 | } | |
8251 | ||
8252 | /* Store this current initializer, for the next enumerator variable | |
8253 | to be parsed. add_init_expr_to_sym() zeros initializer, so we | |
8254 | use last_initializer below. */ | |
8255 | last_initializer = initializer; | |
8256 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
8257 | ||
8258 | /* Maintain enumerator history. */ | |
8259 | gfc_find_symbol (name, NULL, 0, &sym); | |
8260 | create_enum_history (sym, last_initializer); | |
8261 | ||
524af0d6 | 8262 | return (t) ? MATCH_YES : MATCH_ERROR; |
6133c68a TS |
8263 | |
8264 | cleanup: | |
8265 | /* Free stuff up and return. */ | |
8266 | gfc_free_expr (initializer); | |
8267 | ||
8268 | return m; | |
8269 | } | |
8270 | ||
8271 | ||
66e4ab31 | 8272 | /* Match the enumerator definition statement. */ |
25d8f0a2 TS |
8273 | |
8274 | match | |
8275 | gfc_match_enumerator_def (void) | |
8276 | { | |
8277 | match m; | |
524af0d6 | 8278 | bool t; |
d51347f9 | 8279 | |
25d8f0a2 | 8280 | gfc_clear_ts (¤t_ts); |
d51347f9 | 8281 | |
25d8f0a2 TS |
8282 | m = gfc_match (" enumerator"); |
8283 | if (m != MATCH_YES) | |
8284 | return m; | |
6133c68a TS |
8285 | |
8286 | m = gfc_match (" :: "); | |
8287 | if (m == MATCH_ERROR) | |
8288 | return m; | |
8289 | ||
8290 | colon_seen = (m == MATCH_YES); | |
d51347f9 | 8291 | |
25d8f0a2 TS |
8292 | if (gfc_current_state () != COMP_ENUM) |
8293 | { | |
8294 | gfc_error ("ENUM definition statement expected before %C"); | |
8295 | gfc_free_enum_history (); | |
8296 | return MATCH_ERROR; | |
8297 | } | |
8298 | ||
8299 | (¤t_ts)->type = BT_INTEGER; | |
8300 | (¤t_ts)->kind = gfc_c_int_kind; | |
d51347f9 | 8301 | |
6133c68a TS |
8302 | gfc_clear_attr (¤t_attr); |
8303 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, NULL); | |
524af0d6 | 8304 | if (!t) |
25d8f0a2 | 8305 | { |
6133c68a | 8306 | m = MATCH_ERROR; |
25d8f0a2 TS |
8307 | goto cleanup; |
8308 | } | |
8309 | ||
25d8f0a2 TS |
8310 | for (;;) |
8311 | { | |
6133c68a | 8312 | m = enumerator_decl (); |
25d8f0a2 | 8313 | if (m == MATCH_ERROR) |
01e64c3d JJ |
8314 | { |
8315 | gfc_free_enum_history (); | |
8316 | goto cleanup; | |
8317 | } | |
25d8f0a2 TS |
8318 | if (m == MATCH_NO) |
8319 | break; | |
8320 | ||
8321 | if (gfc_match_eos () == MATCH_YES) | |
8322 | goto cleanup; | |
8323 | if (gfc_match_char (',') != MATCH_YES) | |
8324 | break; | |
8325 | } | |
8326 | ||
8327 | if (gfc_current_state () == COMP_ENUM) | |
8328 | { | |
8329 | gfc_free_enum_history (); | |
8330 | gfc_error ("Syntax error in ENUMERATOR definition at %C"); | |
8331 | m = MATCH_ERROR; | |
8332 | } | |
8333 | ||
8334 | cleanup: | |
8335 | gfc_free_array_spec (current_as); | |
8336 | current_as = NULL; | |
8337 | return m; | |
8338 | ||
8339 | } | |
8340 | ||
f6fad28e | 8341 | |
30b608eb DK |
8342 | /* Match binding attributes. */ |
8343 | ||
8344 | static match | |
713485cc | 8345 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc) |
30b608eb DK |
8346 | { |
8347 | bool found_passing = false; | |
713485cc | 8348 | bool seen_ptr = false; |
90661f26 | 8349 | match m = MATCH_YES; |
30b608eb | 8350 | |
eea58adb | 8351 | /* Initialize to defaults. Do so even before the MATCH_NO check so that in |
30b608eb DK |
8352 | this case the defaults are in there. */ |
8353 | ba->access = ACCESS_UNKNOWN; | |
8354 | ba->pass_arg = NULL; | |
8355 | ba->pass_arg_num = 0; | |
8356 | ba->nopass = 0; | |
8357 | ba->non_overridable = 0; | |
b0e5fa94 | 8358 | ba->deferred = 0; |
90661f26 | 8359 | ba->ppc = ppc; |
30b608eb DK |
8360 | |
8361 | /* If we find a comma, we believe there are binding attributes. */ | |
90661f26 JW |
8362 | m = gfc_match_char (','); |
8363 | if (m == MATCH_NO) | |
8364 | goto done; | |
30b608eb DK |
8365 | |
8366 | do | |
8367 | { | |
e157f736 DK |
8368 | /* Access specifier. */ |
8369 | ||
8370 | m = gfc_match (" public"); | |
30b608eb DK |
8371 | if (m == MATCH_ERROR) |
8372 | goto error; | |
8373 | if (m == MATCH_YES) | |
8374 | { | |
e157f736 | 8375 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 8376 | { |
e157f736 | 8377 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
8378 | goto error; |
8379 | } | |
8380 | ||
e157f736 | 8381 | ba->access = ACCESS_PUBLIC; |
30b608eb DK |
8382 | continue; |
8383 | } | |
8384 | ||
e157f736 | 8385 | m = gfc_match (" private"); |
30b608eb DK |
8386 | if (m == MATCH_ERROR) |
8387 | goto error; | |
8388 | if (m == MATCH_YES) | |
8389 | { | |
e157f736 | 8390 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 8391 | { |
e157f736 | 8392 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
8393 | goto error; |
8394 | } | |
8395 | ||
e157f736 | 8396 | ba->access = ACCESS_PRIVATE; |
30b608eb DK |
8397 | continue; |
8398 | } | |
8399 | ||
e157f736 DK |
8400 | /* If inside GENERIC, the following is not allowed. */ |
8401 | if (!generic) | |
30b608eb | 8402 | { |
30b608eb | 8403 | |
e157f736 DK |
8404 | /* NOPASS flag. */ |
8405 | m = gfc_match (" nopass"); | |
8406 | if (m == MATCH_ERROR) | |
8407 | goto error; | |
8408 | if (m == MATCH_YES) | |
30b608eb | 8409 | { |
e157f736 DK |
8410 | if (found_passing) |
8411 | { | |
8412 | gfc_error ("Binding attributes already specify passing," | |
8413 | " illegal NOPASS at %C"); | |
8414 | goto error; | |
8415 | } | |
8416 | ||
8417 | found_passing = true; | |
8418 | ba->nopass = 1; | |
8419 | continue; | |
30b608eb DK |
8420 | } |
8421 | ||
e157f736 DK |
8422 | /* PASS possibly including argument. */ |
8423 | m = gfc_match (" pass"); | |
8424 | if (m == MATCH_ERROR) | |
8425 | goto error; | |
8426 | if (m == MATCH_YES) | |
30b608eb | 8427 | { |
e157f736 DK |
8428 | char arg[GFC_MAX_SYMBOL_LEN + 1]; |
8429 | ||
8430 | if (found_passing) | |
8431 | { | |
8432 | gfc_error ("Binding attributes already specify passing," | |
8433 | " illegal PASS at %C"); | |
8434 | goto error; | |
8435 | } | |
8436 | ||
8437 | m = gfc_match (" ( %n )", arg); | |
8438 | if (m == MATCH_ERROR) | |
8439 | goto error; | |
8440 | if (m == MATCH_YES) | |
90661f26 | 8441 | ba->pass_arg = gfc_get_string (arg); |
e157f736 DK |
8442 | gcc_assert ((m == MATCH_YES) == (ba->pass_arg != NULL)); |
8443 | ||
8444 | found_passing = true; | |
8445 | ba->nopass = 0; | |
8446 | continue; | |
30b608eb DK |
8447 | } |
8448 | ||
713485cc JW |
8449 | if (ppc) |
8450 | { | |
8451 | /* POINTER flag. */ | |
8452 | m = gfc_match (" pointer"); | |
8453 | if (m == MATCH_ERROR) | |
8454 | goto error; | |
8455 | if (m == MATCH_YES) | |
8456 | { | |
8457 | if (seen_ptr) | |
8458 | { | |
8459 | gfc_error ("Duplicate POINTER attribute at %C"); | |
8460 | goto error; | |
8461 | } | |
8462 | ||
8463 | seen_ptr = true; | |
713485cc JW |
8464 | continue; |
8465 | } | |
8466 | } | |
8467 | else | |
8468 | { | |
8469 | /* NON_OVERRIDABLE flag. */ | |
8470 | m = gfc_match (" non_overridable"); | |
8471 | if (m == MATCH_ERROR) | |
8472 | goto error; | |
8473 | if (m == MATCH_YES) | |
8474 | { | |
8475 | if (ba->non_overridable) | |
8476 | { | |
8477 | gfc_error ("Duplicate NON_OVERRIDABLE at %C"); | |
8478 | goto error; | |
8479 | } | |
8480 | ||
8481 | ba->non_overridable = 1; | |
8482 | continue; | |
8483 | } | |
8484 | ||
8485 | /* DEFERRED flag. */ | |
8486 | m = gfc_match (" deferred"); | |
8487 | if (m == MATCH_ERROR) | |
8488 | goto error; | |
8489 | if (m == MATCH_YES) | |
8490 | { | |
8491 | if (ba->deferred) | |
8492 | { | |
8493 | gfc_error ("Duplicate DEFERRED at %C"); | |
8494 | goto error; | |
8495 | } | |
8496 | ||
8497 | ba->deferred = 1; | |
8498 | continue; | |
8499 | } | |
8500 | } | |
8501 | ||
30b608eb DK |
8502 | } |
8503 | ||
8504 | /* Nothing matching found. */ | |
e157f736 DK |
8505 | if (generic) |
8506 | gfc_error ("Expected access-specifier at %C"); | |
8507 | else | |
8508 | gfc_error ("Expected binding attribute at %C"); | |
30b608eb DK |
8509 | goto error; |
8510 | } | |
8511 | while (gfc_match_char (',') == MATCH_YES); | |
8512 | ||
b0e5fa94 DK |
8513 | /* NON_OVERRIDABLE and DEFERRED exclude themselves. */ |
8514 | if (ba->non_overridable && ba->deferred) | |
8515 | { | |
8516 | gfc_error ("NON_OVERRIDABLE and DEFERRED can't both appear at %C"); | |
8517 | goto error; | |
8518 | } | |
8519 | ||
90661f26 JW |
8520 | m = MATCH_YES; |
8521 | ||
8522 | done: | |
e157f736 DK |
8523 | if (ba->access == ACCESS_UNKNOWN) |
8524 | ba->access = gfc_typebound_default_access; | |
8525 | ||
713485cc JW |
8526 | if (ppc && !seen_ptr) |
8527 | { | |
8528 | gfc_error ("POINTER attribute is required for procedure pointer component" | |
8529 | " at %C"); | |
8530 | goto error; | |
8531 | } | |
8532 | ||
90661f26 | 8533 | return m; |
30b608eb DK |
8534 | |
8535 | error: | |
30b608eb DK |
8536 | return MATCH_ERROR; |
8537 | } | |
8538 | ||
8539 | ||
8540 | /* Match a PROCEDURE specific binding inside a derived type. */ | |
8541 | ||
8542 | static match | |
8543 | match_procedure_in_type (void) | |
8544 | { | |
8545 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8546 | char target_buf[GFC_MAX_SYMBOL_LEN + 1]; | |
1be17993 | 8547 | char* target = NULL, *ifc = NULL; |
3e15518b | 8548 | gfc_typebound_proc tb; |
30b608eb DK |
8549 | bool seen_colons; |
8550 | bool seen_attrs; | |
8551 | match m; | |
8552 | gfc_symtree* stree; | |
8553 | gfc_namespace* ns; | |
8554 | gfc_symbol* block; | |
1be17993 | 8555 | int num; |
30b608eb DK |
8556 | |
8557 | /* Check current state. */ | |
8558 | gcc_assert (gfc_state_stack->state == COMP_DERIVED_CONTAINS); | |
8559 | block = gfc_state_stack->previous->sym; | |
8560 | gcc_assert (block); | |
8561 | ||
b0e5fa94 | 8562 | /* Try to match PROCEDURE(interface). */ |
30b608eb DK |
8563 | if (gfc_match (" (") == MATCH_YES) |
8564 | { | |
b0e5fa94 DK |
8565 | m = gfc_match_name (target_buf); |
8566 | if (m == MATCH_ERROR) | |
8567 | return m; | |
8568 | if (m != MATCH_YES) | |
8569 | { | |
a4d9b221 | 8570 | gfc_error ("Interface-name expected after %<(%> at %C"); |
b0e5fa94 DK |
8571 | return MATCH_ERROR; |
8572 | } | |
8573 | ||
8574 | if (gfc_match (" )") != MATCH_YES) | |
8575 | { | |
a4d9b221 | 8576 | gfc_error ("%<)%> expected at %C"); |
b0e5fa94 DK |
8577 | return MATCH_ERROR; |
8578 | } | |
8579 | ||
1be17993 | 8580 | ifc = target_buf; |
30b608eb DK |
8581 | } |
8582 | ||
8583 | /* Construct the data structure. */ | |
ff5b6492 | 8584 | memset (&tb, 0, sizeof (tb)); |
3e15518b | 8585 | tb.where = gfc_current_locus; |
30b608eb DK |
8586 | |
8587 | /* Match binding attributes. */ | |
3e15518b | 8588 | m = match_binding_attributes (&tb, false, false); |
30b608eb DK |
8589 | if (m == MATCH_ERROR) |
8590 | return m; | |
8591 | seen_attrs = (m == MATCH_YES); | |
8592 | ||
1be17993 | 8593 | /* Check that attribute DEFERRED is given if an interface is specified. */ |
3e15518b | 8594 | if (tb.deferred && !ifc) |
b0e5fa94 DK |
8595 | { |
8596 | gfc_error ("Interface must be specified for DEFERRED binding at %C"); | |
8597 | return MATCH_ERROR; | |
8598 | } | |
3e15518b | 8599 | if (ifc && !tb.deferred) |
b0e5fa94 DK |
8600 | { |
8601 | gfc_error ("PROCEDURE(interface) at %C should be declared DEFERRED"); | |
8602 | return MATCH_ERROR; | |
8603 | } | |
8604 | ||
30b608eb DK |
8605 | /* Match the colons. */ |
8606 | m = gfc_match (" ::"); | |
8607 | if (m == MATCH_ERROR) | |
8608 | return m; | |
8609 | seen_colons = (m == MATCH_YES); | |
8610 | if (seen_attrs && !seen_colons) | |
8611 | { | |
a4d9b221 | 8612 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
30b608eb DK |
8613 | return MATCH_ERROR; |
8614 | } | |
8615 | ||
f5acf0f2 | 8616 | /* Match the binding names. */ |
1be17993 | 8617 | for(num=1;;num++) |
30b608eb | 8618 | { |
1be17993 JW |
8619 | m = gfc_match_name (name); |
8620 | if (m == MATCH_ERROR) | |
8621 | return m; | |
8622 | if (m == MATCH_NO) | |
b0e5fa94 | 8623 | { |
1be17993 | 8624 | gfc_error ("Expected binding name at %C"); |
b0e5fa94 DK |
8625 | return MATCH_ERROR; |
8626 | } | |
8627 | ||
524af0d6 | 8628 | if (num>1 && !gfc_notify_std (GFC_STD_F2008, "PROCEDURE list at %C")) |
1be17993 | 8629 | return MATCH_ERROR; |
30b608eb | 8630 | |
1be17993 JW |
8631 | /* Try to match the '=> target', if it's there. */ |
8632 | target = ifc; | |
8633 | m = gfc_match (" =>"); | |
30b608eb DK |
8634 | if (m == MATCH_ERROR) |
8635 | return m; | |
1be17993 | 8636 | if (m == MATCH_YES) |
30b608eb | 8637 | { |
3e15518b | 8638 | if (tb.deferred) |
1be17993 | 8639 | { |
a4d9b221 | 8640 | gfc_error ("%<=> target%> is invalid for DEFERRED binding at %C"); |
1be17993 JW |
8641 | return MATCH_ERROR; |
8642 | } | |
8643 | ||
8644 | if (!seen_colons) | |
8645 | { | |
a4d9b221 | 8646 | gfc_error ("%<::%> needed in PROCEDURE binding with explicit target" |
1be17993 JW |
8647 | " at %C"); |
8648 | return MATCH_ERROR; | |
8649 | } | |
8650 | ||
8651 | m = gfc_match_name (target_buf); | |
8652 | if (m == MATCH_ERROR) | |
8653 | return m; | |
8654 | if (m == MATCH_NO) | |
8655 | { | |
a4d9b221 | 8656 | gfc_error ("Expected binding target after %<=>%> at %C"); |
1be17993 JW |
8657 | return MATCH_ERROR; |
8658 | } | |
8659 | target = target_buf; | |
30b608eb | 8660 | } |
30b608eb | 8661 | |
1be17993 JW |
8662 | /* If no target was found, it has the same name as the binding. */ |
8663 | if (!target) | |
8664 | target = name; | |
30b608eb | 8665 | |
1be17993 JW |
8666 | /* Get the namespace to insert the symbols into. */ |
8667 | ns = block->f2k_derived; | |
8668 | gcc_assert (ns); | |
30b608eb | 8669 | |
1be17993 | 8670 | /* If the binding is DEFERRED, check that the containing type is ABSTRACT. */ |
3e15518b | 8671 | if (tb.deferred && !block->attr.abstract) |
1be17993 | 8672 | { |
c4100eae | 8673 | gfc_error ("Type %qs containing DEFERRED binding at %C " |
1be17993 JW |
8674 | "is not ABSTRACT", block->name); |
8675 | return MATCH_ERROR; | |
8676 | } | |
30b608eb | 8677 | |
1be17993 | 8678 | /* See if we already have a binding with this name in the symtree which |
6bd2c800 | 8679 | would be an error. If a GENERIC already targeted this binding, it may |
1be17993 JW |
8680 | be already there but then typebound is still NULL. */ |
8681 | stree = gfc_find_symtree (ns->tb_sym_root, name); | |
9f23af48 | 8682 | if (stree && stree->n.tb) |
1be17993 | 8683 | { |
c4100eae MLI |
8684 | gfc_error ("There is already a procedure with binding name %qs for " |
8685 | "the derived type %qs at %C", name, block->name); | |
1be17993 JW |
8686 | return MATCH_ERROR; |
8687 | } | |
b0e5fa94 | 8688 | |
1be17993 | 8689 | /* Insert it and set attributes. */ |
30b608eb | 8690 | |
9f23af48 MM |
8691 | if (!stree) |
8692 | { | |
8693 | stree = gfc_new_symtree (&ns->tb_sym_root, name); | |
8694 | gcc_assert (stree); | |
8695 | } | |
3e15518b | 8696 | stree->n.tb = gfc_get_typebound_proc (&tb); |
e34ccb4c | 8697 | |
3e15518b JW |
8698 | if (gfc_get_sym_tree (target, gfc_current_ns, &stree->n.tb->u.specific, |
8699 | false)) | |
1be17993 | 8700 | return MATCH_ERROR; |
3e15518b | 8701 | gfc_set_sym_referenced (stree->n.tb->u.specific->n.sym); |
f5acf0f2 | 8702 | |
1be17993 JW |
8703 | if (gfc_match_eos () == MATCH_YES) |
8704 | return MATCH_YES; | |
8705 | if (gfc_match_char (',') != MATCH_YES) | |
8706 | goto syntax; | |
e34ccb4c | 8707 | } |
30b608eb | 8708 | |
1be17993 JW |
8709 | syntax: |
8710 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
8711 | return MATCH_ERROR; | |
30b608eb DK |
8712 | } |
8713 | ||
8714 | ||
e157f736 DK |
8715 | /* Match a GENERIC procedure binding inside a derived type. */ |
8716 | ||
8717 | match | |
8718 | gfc_match_generic (void) | |
8719 | { | |
8720 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
94747289 | 8721 | char bind_name[GFC_MAX_SYMBOL_LEN + 16]; /* Allow space for OPERATOR(...). */ |
e157f736 DK |
8722 | gfc_symbol* block; |
8723 | gfc_typebound_proc tbattr; /* Used for match_binding_attributes. */ | |
8724 | gfc_typebound_proc* tb; | |
e157f736 | 8725 | gfc_namespace* ns; |
94747289 DK |
8726 | interface_type op_type; |
8727 | gfc_intrinsic_op op; | |
e157f736 DK |
8728 | match m; |
8729 | ||
8730 | /* Check current state. */ | |
8731 | if (gfc_current_state () == COMP_DERIVED) | |
8732 | { | |
8733 | gfc_error ("GENERIC at %C must be inside a derived-type CONTAINS"); | |
8734 | return MATCH_ERROR; | |
8735 | } | |
8736 | if (gfc_current_state () != COMP_DERIVED_CONTAINS) | |
8737 | return MATCH_NO; | |
8738 | block = gfc_state_stack->previous->sym; | |
8739 | ns = block->f2k_derived; | |
8740 | gcc_assert (block && ns); | |
8741 | ||
ff5b6492 MM |
8742 | memset (&tbattr, 0, sizeof (tbattr)); |
8743 | tbattr.where = gfc_current_locus; | |
8744 | ||
e157f736 | 8745 | /* See if we get an access-specifier. */ |
713485cc | 8746 | m = match_binding_attributes (&tbattr, true, false); |
e157f736 DK |
8747 | if (m == MATCH_ERROR) |
8748 | goto error; | |
8749 | ||
8750 | /* Now the colons, those are required. */ | |
8751 | if (gfc_match (" ::") != MATCH_YES) | |
8752 | { | |
a4d9b221 | 8753 | gfc_error ("Expected %<::%> at %C"); |
e157f736 DK |
8754 | goto error; |
8755 | } | |
8756 | ||
94747289 DK |
8757 | /* Match the binding name; depending on type (operator / generic) format |
8758 | it for future error messages into bind_name. */ | |
f5acf0f2 | 8759 | |
94747289 | 8760 | m = gfc_match_generic_spec (&op_type, name, &op); |
e157f736 DK |
8761 | if (m == MATCH_ERROR) |
8762 | return MATCH_ERROR; | |
8763 | if (m == MATCH_NO) | |
8764 | { | |
94747289 | 8765 | gfc_error ("Expected generic name or operator descriptor at %C"); |
e157f736 DK |
8766 | goto error; |
8767 | } | |
8768 | ||
94747289 | 8769 | switch (op_type) |
e157f736 | 8770 | { |
94747289 DK |
8771 | case INTERFACE_GENERIC: |
8772 | snprintf (bind_name, sizeof (bind_name), "%s", name); | |
8773 | break; | |
f5acf0f2 | 8774 | |
94747289 DK |
8775 | case INTERFACE_USER_OP: |
8776 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(.%s.)", name); | |
8777 | break; | |
f5acf0f2 | 8778 | |
94747289 DK |
8779 | case INTERFACE_INTRINSIC_OP: |
8780 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(%s)", | |
8781 | gfc_op2string (op)); | |
8782 | break; | |
8783 | ||
377e37c1 SK |
8784 | case INTERFACE_NAMELESS: |
8785 | gfc_error ("Malformed GENERIC statement at %C"); | |
8786 | goto error; | |
8787 | break; | |
8788 | ||
94747289 DK |
8789 | default: |
8790 | gcc_unreachable (); | |
8791 | } | |
e34ccb4c | 8792 | |
94747289 DK |
8793 | /* Match the required =>. */ |
8794 | if (gfc_match (" =>") != MATCH_YES) | |
8795 | { | |
a4d9b221 | 8796 | gfc_error ("Expected %<=>%> at %C"); |
94747289 DK |
8797 | goto error; |
8798 | } | |
f5acf0f2 | 8799 | |
94747289 DK |
8800 | /* Try to find existing GENERIC binding with this name / for this operator; |
8801 | if there is something, check that it is another GENERIC and then extend | |
8802 | it rather than building a new node. Otherwise, create it and put it | |
8803 | at the right position. */ | |
8804 | ||
8805 | switch (op_type) | |
8806 | { | |
8807 | case INTERFACE_USER_OP: | |
8808 | case INTERFACE_GENERIC: | |
8809 | { | |
8810 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
8811 | gfc_symtree* st; | |
8812 | ||
8813 | st = gfc_find_symtree (is_op ? ns->tb_uop_root : ns->tb_sym_root, name); | |
8814 | if (st) | |
8815 | { | |
8816 | tb = st->n.tb; | |
8817 | gcc_assert (tb); | |
8818 | } | |
8819 | else | |
8820 | tb = NULL; | |
8821 | ||
8822 | break; | |
8823 | } | |
8824 | ||
8825 | case INTERFACE_INTRINSIC_OP: | |
8826 | tb = ns->tb_op[op]; | |
8827 | break; | |
8828 | ||
8829 | default: | |
8830 | gcc_unreachable (); | |
8831 | } | |
8832 | ||
8833 | if (tb) | |
8834 | { | |
e34ccb4c | 8835 | if (!tb->is_generic) |
e157f736 | 8836 | { |
94747289 | 8837 | gcc_assert (op_type == INTERFACE_GENERIC); |
e157f736 | 8838 | gfc_error ("There's already a non-generic procedure with binding name" |
c4100eae | 8839 | " %qs for the derived type %qs at %C", |
94747289 | 8840 | bind_name, block->name); |
e157f736 DK |
8841 | goto error; |
8842 | } | |
8843 | ||
e157f736 DK |
8844 | if (tb->access != tbattr.access) |
8845 | { | |
8846 | gfc_error ("Binding at %C must have the same access as already" | |
c4100eae | 8847 | " defined binding %qs", bind_name); |
e157f736 DK |
8848 | goto error; |
8849 | } | |
8850 | } | |
8851 | else | |
8852 | { | |
3e15518b | 8853 | tb = gfc_get_typebound_proc (NULL); |
e157f736 DK |
8854 | tb->where = gfc_current_locus; |
8855 | tb->access = tbattr.access; | |
8856 | tb->is_generic = 1; | |
8857 | tb->u.generic = NULL; | |
94747289 DK |
8858 | |
8859 | switch (op_type) | |
8860 | { | |
8861 | case INTERFACE_GENERIC: | |
8862 | case INTERFACE_USER_OP: | |
8863 | { | |
8864 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
8865 | gfc_symtree* st; | |
8866 | ||
8867 | st = gfc_new_symtree (is_op ? &ns->tb_uop_root : &ns->tb_sym_root, | |
8868 | name); | |
8869 | gcc_assert (st); | |
8870 | st->n.tb = tb; | |
8871 | ||
8872 | break; | |
8873 | } | |
f5acf0f2 | 8874 | |
94747289 DK |
8875 | case INTERFACE_INTRINSIC_OP: |
8876 | ns->tb_op[op] = tb; | |
8877 | break; | |
8878 | ||
8879 | default: | |
8880 | gcc_unreachable (); | |
8881 | } | |
e157f736 DK |
8882 | } |
8883 | ||
8884 | /* Now, match all following names as specific targets. */ | |
8885 | do | |
8886 | { | |
8887 | gfc_symtree* target_st; | |
8888 | gfc_tbp_generic* target; | |
8889 | ||
8890 | m = gfc_match_name (name); | |
8891 | if (m == MATCH_ERROR) | |
8892 | goto error; | |
8893 | if (m == MATCH_NO) | |
8894 | { | |
8895 | gfc_error ("Expected specific binding name at %C"); | |
8896 | goto error; | |
8897 | } | |
8898 | ||
e34ccb4c | 8899 | target_st = gfc_get_tbp_symtree (&ns->tb_sym_root, name); |
e157f736 DK |
8900 | |
8901 | /* See if this is a duplicate specification. */ | |
8902 | for (target = tb->u.generic; target; target = target->next) | |
8903 | if (target_st == target->specific_st) | |
8904 | { | |
c4100eae MLI |
8905 | gfc_error ("%qs already defined as specific binding for the" |
8906 | " generic %qs at %C", name, bind_name); | |
e157f736 DK |
8907 | goto error; |
8908 | } | |
8909 | ||
e157f736 DK |
8910 | target = gfc_get_tbp_generic (); |
8911 | target->specific_st = target_st; | |
8912 | target->specific = NULL; | |
8913 | target->next = tb->u.generic; | |
218e1228 TB |
8914 | target->is_operator = ((op_type == INTERFACE_USER_OP) |
8915 | || (op_type == INTERFACE_INTRINSIC_OP)); | |
e157f736 DK |
8916 | tb->u.generic = target; |
8917 | } | |
8918 | while (gfc_match (" ,") == MATCH_YES); | |
8919 | ||
8920 | /* Here should be the end. */ | |
8921 | if (gfc_match_eos () != MATCH_YES) | |
8922 | { | |
8923 | gfc_error ("Junk after GENERIC binding at %C"); | |
8924 | goto error; | |
8925 | } | |
8926 | ||
8927 | return MATCH_YES; | |
8928 | ||
8929 | error: | |
8930 | return MATCH_ERROR; | |
8931 | } | |
8932 | ||
8933 | ||
34523524 DK |
8934 | /* Match a FINAL declaration inside a derived type. */ |
8935 | ||
8936 | match | |
8937 | gfc_match_final_decl (void) | |
8938 | { | |
8939 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8940 | gfc_symbol* sym; | |
8941 | match m; | |
8942 | gfc_namespace* module_ns; | |
8943 | bool first, last; | |
30b608eb | 8944 | gfc_symbol* block; |
34523524 | 8945 | |
33344e0f JW |
8946 | if (gfc_current_form == FORM_FREE) |
8947 | { | |
8948 | char c = gfc_peek_ascii_char (); | |
8949 | if (!gfc_is_whitespace (c) && c != ':') | |
8950 | return MATCH_NO; | |
8951 | } | |
f5acf0f2 | 8952 | |
30b608eb | 8953 | if (gfc_state_stack->state != COMP_DERIVED_CONTAINS) |
34523524 | 8954 | { |
33344e0f JW |
8955 | if (gfc_current_form == FORM_FIXED) |
8956 | return MATCH_NO; | |
8957 | ||
34523524 | 8958 | gfc_error ("FINAL declaration at %C must be inside a derived type " |
30b608eb | 8959 | "CONTAINS section"); |
34523524 DK |
8960 | return MATCH_ERROR; |
8961 | } | |
8962 | ||
30b608eb DK |
8963 | block = gfc_state_stack->previous->sym; |
8964 | gcc_assert (block); | |
34523524 | 8965 | |
30b608eb DK |
8966 | if (!gfc_state_stack->previous || !gfc_state_stack->previous->previous |
8967 | || gfc_state_stack->previous->previous->state != COMP_MODULE) | |
34523524 DK |
8968 | { |
8969 | gfc_error ("Derived type declaration with FINAL at %C must be in the" | |
8970 | " specification part of a MODULE"); | |
8971 | return MATCH_ERROR; | |
8972 | } | |
8973 | ||
8974 | module_ns = gfc_current_ns; | |
8975 | gcc_assert (module_ns); | |
8976 | gcc_assert (module_ns->proc_name->attr.flavor == FL_MODULE); | |
8977 | ||
8978 | /* Match optional ::, don't care about MATCH_YES or MATCH_NO. */ | |
8979 | if (gfc_match (" ::") == MATCH_ERROR) | |
8980 | return MATCH_ERROR; | |
8981 | ||
8982 | /* Match the sequence of procedure names. */ | |
8983 | first = true; | |
8984 | last = false; | |
8985 | do | |
8986 | { | |
8987 | gfc_finalizer* f; | |
8988 | ||
8989 | if (first && gfc_match_eos () == MATCH_YES) | |
8990 | { | |
8991 | gfc_error ("Empty FINAL at %C"); | |
8992 | return MATCH_ERROR; | |
8993 | } | |
8994 | ||
8995 | m = gfc_match_name (name); | |
8996 | if (m == MATCH_NO) | |
8997 | { | |
8998 | gfc_error ("Expected module procedure name at %C"); | |
8999 | return MATCH_ERROR; | |
9000 | } | |
9001 | else if (m != MATCH_YES) | |
9002 | return MATCH_ERROR; | |
9003 | ||
9004 | if (gfc_match_eos () == MATCH_YES) | |
9005 | last = true; | |
9006 | if (!last && gfc_match_char (',') != MATCH_YES) | |
9007 | { | |
a4d9b221 | 9008 | gfc_error ("Expected %<,%> at %C"); |
34523524 DK |
9009 | return MATCH_ERROR; |
9010 | } | |
9011 | ||
9012 | if (gfc_get_symbol (name, module_ns, &sym)) | |
9013 | { | |
c4100eae | 9014 | gfc_error ("Unknown procedure name %qs at %C", name); |
34523524 DK |
9015 | return MATCH_ERROR; |
9016 | } | |
9017 | ||
9018 | /* Mark the symbol as module procedure. */ | |
9019 | if (sym->attr.proc != PROC_MODULE | |
524af0d6 | 9020 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
34523524 DK |
9021 | return MATCH_ERROR; |
9022 | ||
9023 | /* Check if we already have this symbol in the list, this is an error. */ | |
30b608eb | 9024 | for (f = block->f2k_derived->finalizers; f; f = f->next) |
f6fad28e | 9025 | if (f->proc_sym == sym) |
34523524 | 9026 | { |
c4100eae | 9027 | gfc_error ("%qs at %C is already defined as FINAL procedure!", |
34523524 DK |
9028 | name); |
9029 | return MATCH_ERROR; | |
9030 | } | |
9031 | ||
9032 | /* Add this symbol to the list of finalizers. */ | |
30b608eb | 9033 | gcc_assert (block->f2k_derived); |
34523524 | 9034 | ++sym->refs; |
ece3f663 | 9035 | f = XCNEW (gfc_finalizer); |
f6fad28e DK |
9036 | f->proc_sym = sym; |
9037 | f->proc_tree = NULL; | |
34523524 | 9038 | f->where = gfc_current_locus; |
30b608eb DK |
9039 | f->next = block->f2k_derived->finalizers; |
9040 | block->f2k_derived->finalizers = f; | |
34523524 DK |
9041 | |
9042 | first = false; | |
9043 | } | |
9044 | while (!last); | |
9045 | ||
9046 | return MATCH_YES; | |
9047 | } | |
08a6b8e0 TB |
9048 | |
9049 | ||
9050 | const ext_attr_t ext_attr_list[] = { | |
e7ac6a7c TB |
9051 | { "dllimport", EXT_ATTR_DLLIMPORT, "dllimport" }, |
9052 | { "dllexport", EXT_ATTR_DLLEXPORT, "dllexport" }, | |
9053 | { "cdecl", EXT_ATTR_CDECL, "cdecl" }, | |
9054 | { "stdcall", EXT_ATTR_STDCALL, "stdcall" }, | |
9055 | { "fastcall", EXT_ATTR_FASTCALL, "fastcall" }, | |
9056 | { "no_arg_check", EXT_ATTR_NO_ARG_CHECK, NULL }, | |
9057 | { NULL, EXT_ATTR_LAST, NULL } | |
08a6b8e0 TB |
9058 | }; |
9059 | ||
9060 | /* Match a !GCC$ ATTRIBUTES statement of the form: | |
9061 | !GCC$ ATTRIBUTES attribute-list :: var-name [, var-name] ... | |
9062 | When we come here, we have already matched the !GCC$ ATTRIBUTES string. | |
9063 | ||
9064 | TODO: We should support all GCC attributes using the same syntax for | |
9065 | the attribute list, i.e. the list in C | |
9066 | __attributes(( attribute-list )) | |
9067 | matches then | |
9068 | !GCC$ ATTRIBUTES attribute-list :: | |
9069 | Cf. c-parser.c's c_parser_attributes; the data can then directly be | |
9070 | saved into a TREE. | |
9071 | ||
9072 | As there is absolutely no risk of confusion, we should never return | |
9073 | MATCH_NO. */ | |
9074 | match | |
9075 | gfc_match_gcc_attributes (void) | |
f5acf0f2 | 9076 | { |
08a6b8e0 TB |
9077 | symbol_attribute attr; |
9078 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9079 | unsigned id; | |
9080 | gfc_symbol *sym; | |
9081 | match m; | |
9082 | ||
9083 | gfc_clear_attr (&attr); | |
9084 | for(;;) | |
9085 | { | |
9086 | char ch; | |
9087 | ||
9088 | if (gfc_match_name (name) != MATCH_YES) | |
9089 | return MATCH_ERROR; | |
9090 | ||
9091 | for (id = 0; id < EXT_ATTR_LAST; id++) | |
9092 | if (strcmp (name, ext_attr_list[id].name) == 0) | |
9093 | break; | |
9094 | ||
9095 | if (id == EXT_ATTR_LAST) | |
9096 | { | |
9097 | gfc_error ("Unknown attribute in !GCC$ ATTRIBUTES statement at %C"); | |
9098 | return MATCH_ERROR; | |
9099 | } | |
9100 | ||
524af0d6 | 9101 | if (!gfc_add_ext_attribute (&attr, (ext_attr_id_t)id, &gfc_current_locus)) |
08a6b8e0 TB |
9102 | return MATCH_ERROR; |
9103 | ||
9104 | gfc_gobble_whitespace (); | |
9105 | ch = gfc_next_ascii_char (); | |
9106 | if (ch == ':') | |
9107 | { | |
9108 | /* This is the successful exit condition for the loop. */ | |
9109 | if (gfc_next_ascii_char () == ':') | |
9110 | break; | |
9111 | } | |
9112 | ||
9113 | if (ch == ',') | |
9114 | continue; | |
9115 | ||
9116 | goto syntax; | |
9117 | } | |
9118 | ||
9119 | if (gfc_match_eos () == MATCH_YES) | |
9120 | goto syntax; | |
9121 | ||
9122 | for(;;) | |
9123 | { | |
9124 | m = gfc_match_name (name); | |
9125 | if (m != MATCH_YES) | |
9126 | return m; | |
9127 | ||
9128 | if (find_special (name, &sym, true)) | |
9129 | return MATCH_ERROR; | |
f5acf0f2 | 9130 | |
08a6b8e0 TB |
9131 | sym->attr.ext_attr |= attr.ext_attr; |
9132 | ||
9133 | if (gfc_match_eos () == MATCH_YES) | |
9134 | break; | |
9135 | ||
9136 | if (gfc_match_char (',') != MATCH_YES) | |
9137 | goto syntax; | |
9138 | } | |
9139 | ||
9140 | return MATCH_YES; | |
9141 | ||
9142 | syntax: | |
9143 | gfc_error ("Syntax error in !GCC$ ATTRIBUTES statement at %C"); | |
9144 | return MATCH_ERROR; | |
9145 | } |