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6de9cd9a | 1 | /* Declaration statement matcher |
cbe34bb5 | 2 | Copyright (C) 2002-2017 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" |
ca39e6f2 FXC |
31 | |
32 | /* Macros to access allocate memory for gfc_data_variable, | |
33 | gfc_data_value and gfc_data. */ | |
ece3f663 KG |
34 | #define gfc_get_data_variable() XCNEW (gfc_data_variable) |
35 | #define gfc_get_data_value() XCNEW (gfc_data_value) | |
36 | #define gfc_get_data() XCNEW (gfc_data) | |
ca39e6f2 FXC |
37 | |
38 | ||
524af0d6 | 39 | static bool set_binding_label (const char **, const char *, int); |
62603fae JB |
40 | |
41 | ||
2054fc29 | 42 | /* This flag is set if an old-style length selector is matched |
6de9cd9a DN |
43 | during a type-declaration statement. */ |
44 | ||
45 | static int old_char_selector; | |
46 | ||
46fa431d | 47 | /* When variables acquire types and attributes from a declaration |
6de9cd9a DN |
48 | statement, they get them from the following static variables. The |
49 | first part of a declaration sets these variables and the second | |
50 | part copies these into symbol structures. */ | |
51 | ||
52 | static gfc_typespec current_ts; | |
53 | ||
54 | static symbol_attribute current_attr; | |
55 | static gfc_array_spec *current_as; | |
56 | static int colon_seen; | |
57 | ||
a8b3b0b6 | 58 | /* The current binding label (if any). */ |
9975a30b | 59 | static const char* curr_binding_label; |
a8b3b0b6 CR |
60 | /* Need to know how many identifiers are on the current data declaration |
61 | line in case we're given the BIND(C) attribute with a NAME= specifier. */ | |
62 | static int num_idents_on_line; | |
63 | /* Need to know if a NAME= specifier was found during gfc_match_bind_c so we | |
64 | can supply a name if the curr_binding_label is nil and NAME= was not. */ | |
65 | static int has_name_equals = 0; | |
66 | ||
25d8f0a2 TS |
67 | /* Initializer of the previous enumerator. */ |
68 | ||
69 | static gfc_expr *last_initializer; | |
70 | ||
71 | /* History of all the enumerators is maintained, so that | |
72 | kind values of all the enumerators could be updated depending | |
73 | upon the maximum initialized value. */ | |
74 | ||
75 | typedef struct enumerator_history | |
76 | { | |
77 | gfc_symbol *sym; | |
78 | gfc_expr *initializer; | |
79 | struct enumerator_history *next; | |
80 | } | |
81 | enumerator_history; | |
82 | ||
83 | /* Header of enum history chain. */ | |
84 | ||
85 | static enumerator_history *enum_history = NULL; | |
86 | ||
87 | /* Pointer of enum history node containing largest initializer. */ | |
88 | ||
89 | static enumerator_history *max_enum = NULL; | |
90 | ||
6de9cd9a DN |
91 | /* gfc_new_block points to the symbol of a newly matched block. */ |
92 | ||
93 | gfc_symbol *gfc_new_block; | |
94 | ||
1c8bcdf7 | 95 | bool gfc_matching_function; |
e2d29968 | 96 | |
6de9cd9a | 97 | |
294fbfc8 TS |
98 | /********************* DATA statement subroutines *********************/ |
99 | ||
2220652d PT |
100 | static bool in_match_data = false; |
101 | ||
102 | bool | |
103 | gfc_in_match_data (void) | |
104 | { | |
105 | return in_match_data; | |
106 | } | |
107 | ||
ca39e6f2 FXC |
108 | static void |
109 | set_in_match_data (bool set_value) | |
2220652d PT |
110 | { |
111 | in_match_data = set_value; | |
112 | } | |
113 | ||
294fbfc8 TS |
114 | /* Free a gfc_data_variable structure and everything beneath it. */ |
115 | ||
116 | static void | |
636dff67 | 117 | free_variable (gfc_data_variable *p) |
294fbfc8 TS |
118 | { |
119 | gfc_data_variable *q; | |
120 | ||
121 | for (; p; p = q) | |
122 | { | |
123 | q = p->next; | |
124 | gfc_free_expr (p->expr); | |
125 | gfc_free_iterator (&p->iter, 0); | |
126 | free_variable (p->list); | |
cede9502 | 127 | free (p); |
294fbfc8 TS |
128 | } |
129 | } | |
130 | ||
131 | ||
132 | /* Free a gfc_data_value structure and everything beneath it. */ | |
133 | ||
134 | static void | |
636dff67 | 135 | free_value (gfc_data_value *p) |
294fbfc8 TS |
136 | { |
137 | gfc_data_value *q; | |
138 | ||
139 | for (; p; p = q) | |
140 | { | |
141 | q = p->next; | |
c9d75a48 | 142 | mpz_clear (p->repeat); |
294fbfc8 | 143 | gfc_free_expr (p->expr); |
cede9502 | 144 | free (p); |
294fbfc8 TS |
145 | } |
146 | } | |
147 | ||
148 | ||
149 | /* Free a list of gfc_data structures. */ | |
150 | ||
151 | void | |
636dff67 | 152 | gfc_free_data (gfc_data *p) |
294fbfc8 TS |
153 | { |
154 | gfc_data *q; | |
155 | ||
156 | for (; p; p = q) | |
157 | { | |
158 | q = p->next; | |
294fbfc8 TS |
159 | free_variable (p->var); |
160 | free_value (p->value); | |
cede9502 | 161 | free (p); |
294fbfc8 TS |
162 | } |
163 | } | |
164 | ||
165 | ||
a9f6f1f2 | 166 | /* Free all data in a namespace. */ |
636dff67 | 167 | |
a9f6f1f2 | 168 | static void |
66e4ab31 | 169 | gfc_free_data_all (gfc_namespace *ns) |
a9f6f1f2 JD |
170 | { |
171 | gfc_data *d; | |
172 | ||
173 | for (;ns->data;) | |
174 | { | |
175 | d = ns->data->next; | |
cede9502 | 176 | free (ns->data); |
a9f6f1f2 JD |
177 | ns->data = d; |
178 | } | |
179 | } | |
180 | ||
d5e2274d SB |
181 | /* Reject data parsed since the last restore point was marked. */ |
182 | ||
183 | void | |
184 | gfc_reject_data (gfc_namespace *ns) | |
185 | { | |
186 | gfc_data *d; | |
187 | ||
188 | while (ns->data && ns->data != ns->old_data) | |
189 | { | |
190 | d = ns->data->next; | |
191 | free (ns->data); | |
192 | ns->data = d; | |
193 | } | |
194 | } | |
a9f6f1f2 | 195 | |
294fbfc8 TS |
196 | static match var_element (gfc_data_variable *); |
197 | ||
198 | /* Match a list of variables terminated by an iterator and a right | |
199 | parenthesis. */ | |
200 | ||
201 | static match | |
636dff67 | 202 | var_list (gfc_data_variable *parent) |
294fbfc8 TS |
203 | { |
204 | gfc_data_variable *tail, var; | |
205 | match m; | |
206 | ||
207 | m = var_element (&var); | |
208 | if (m == MATCH_ERROR) | |
209 | return MATCH_ERROR; | |
210 | if (m == MATCH_NO) | |
211 | goto syntax; | |
212 | ||
213 | tail = gfc_get_data_variable (); | |
214 | *tail = var; | |
215 | ||
216 | parent->list = tail; | |
217 | ||
218 | for (;;) | |
219 | { | |
220 | if (gfc_match_char (',') != MATCH_YES) | |
221 | goto syntax; | |
222 | ||
223 | m = gfc_match_iterator (&parent->iter, 1); | |
224 | if (m == MATCH_YES) | |
225 | break; | |
226 | if (m == MATCH_ERROR) | |
227 | return MATCH_ERROR; | |
228 | ||
229 | m = var_element (&var); | |
230 | if (m == MATCH_ERROR) | |
231 | return MATCH_ERROR; | |
232 | if (m == MATCH_NO) | |
233 | goto syntax; | |
234 | ||
235 | tail->next = gfc_get_data_variable (); | |
236 | tail = tail->next; | |
237 | ||
238 | *tail = var; | |
239 | } | |
240 | ||
241 | if (gfc_match_char (')') != MATCH_YES) | |
242 | goto syntax; | |
243 | return MATCH_YES; | |
244 | ||
245 | syntax: | |
246 | gfc_syntax_error (ST_DATA); | |
247 | return MATCH_ERROR; | |
248 | } | |
249 | ||
250 | ||
251 | /* Match a single element in a data variable list, which can be a | |
252 | variable-iterator list. */ | |
253 | ||
254 | static match | |
7b901ac4 | 255 | var_element (gfc_data_variable *new_var) |
294fbfc8 TS |
256 | { |
257 | match m; | |
258 | gfc_symbol *sym; | |
259 | ||
7b901ac4 | 260 | memset (new_var, 0, sizeof (gfc_data_variable)); |
294fbfc8 TS |
261 | |
262 | if (gfc_match_char ('(') == MATCH_YES) | |
7b901ac4 | 263 | return var_list (new_var); |
294fbfc8 | 264 | |
7b901ac4 | 265 | m = gfc_match_variable (&new_var->expr, 0); |
294fbfc8 TS |
266 | if (m != MATCH_YES) |
267 | return m; | |
268 | ||
7b901ac4 | 269 | sym = new_var->expr->symtree->n.sym; |
294fbfc8 | 270 | |
f37e928c | 271 | /* Symbol should already have an associated type. */ |
524af0d6 | 272 | if (!gfc_check_symbol_typed (sym, gfc_current_ns, false, gfc_current_locus)) |
f37e928c DK |
273 | return MATCH_ERROR; |
274 | ||
636dff67 SK |
275 | if (!sym->attr.function && gfc_current_ns->parent |
276 | && gfc_current_ns->parent == sym->ns) | |
294fbfc8 | 277 | { |
c4100eae | 278 | gfc_error ("Host associated variable %qs may not be in the DATA " |
e25a0da3 | 279 | "statement at %C", sym->name); |
294fbfc8 TS |
280 | return MATCH_ERROR; |
281 | } | |
282 | ||
4075a94e | 283 | if (gfc_current_state () != COMP_BLOCK_DATA |
636dff67 | 284 | && sym->attr.in_common |
524af0d6 | 285 | && !gfc_notify_std (GFC_STD_GNU, "initialization of " |
a4d9b221 | 286 | "common block variable %qs in DATA statement at %C", |
524af0d6 | 287 | sym->name)) |
4075a94e | 288 | return MATCH_ERROR; |
294fbfc8 | 289 | |
524af0d6 | 290 | if (!gfc_add_data (&sym->attr, sym->name, &new_var->expr->where)) |
294fbfc8 TS |
291 | return MATCH_ERROR; |
292 | ||
293 | return MATCH_YES; | |
294 | } | |
295 | ||
296 | ||
297 | /* Match the top-level list of data variables. */ | |
298 | ||
299 | static match | |
636dff67 | 300 | top_var_list (gfc_data *d) |
294fbfc8 | 301 | { |
7b901ac4 | 302 | gfc_data_variable var, *tail, *new_var; |
294fbfc8 TS |
303 | match m; |
304 | ||
305 | tail = NULL; | |
306 | ||
307 | for (;;) | |
308 | { | |
309 | m = var_element (&var); | |
310 | if (m == MATCH_NO) | |
311 | goto syntax; | |
312 | if (m == MATCH_ERROR) | |
313 | return MATCH_ERROR; | |
314 | ||
7b901ac4 KG |
315 | new_var = gfc_get_data_variable (); |
316 | *new_var = var; | |
294fbfc8 TS |
317 | |
318 | if (tail == NULL) | |
7b901ac4 | 319 | d->var = new_var; |
294fbfc8 | 320 | else |
7b901ac4 | 321 | tail->next = new_var; |
294fbfc8 | 322 | |
7b901ac4 | 323 | tail = new_var; |
294fbfc8 TS |
324 | |
325 | if (gfc_match_char ('/') == MATCH_YES) | |
326 | break; | |
327 | if (gfc_match_char (',') != MATCH_YES) | |
328 | goto syntax; | |
329 | } | |
330 | ||
331 | return MATCH_YES; | |
332 | ||
333 | syntax: | |
334 | gfc_syntax_error (ST_DATA); | |
a9f6f1f2 | 335 | gfc_free_data_all (gfc_current_ns); |
294fbfc8 TS |
336 | return MATCH_ERROR; |
337 | } | |
338 | ||
339 | ||
340 | static match | |
636dff67 | 341 | match_data_constant (gfc_expr **result) |
294fbfc8 TS |
342 | { |
343 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c3f34952 | 344 | gfc_symbol *sym, *dt_sym = NULL; |
294fbfc8 TS |
345 | gfc_expr *expr; |
346 | match m; | |
36d3fb4c | 347 | locus old_loc; |
294fbfc8 TS |
348 | |
349 | m = gfc_match_literal_constant (&expr, 1); | |
350 | if (m == MATCH_YES) | |
351 | { | |
352 | *result = expr; | |
353 | return MATCH_YES; | |
354 | } | |
355 | ||
356 | if (m == MATCH_ERROR) | |
357 | return MATCH_ERROR; | |
358 | ||
359 | m = gfc_match_null (result); | |
360 | if (m != MATCH_NO) | |
361 | return m; | |
362 | ||
36d3fb4c PT |
363 | old_loc = gfc_current_locus; |
364 | ||
365 | /* Should this be a structure component, try to match it | |
366 | before matching a name. */ | |
367 | m = gfc_match_rvalue (result); | |
368 | if (m == MATCH_ERROR) | |
369 | return m; | |
370 | ||
371 | if (m == MATCH_YES && (*result)->expr_type == EXPR_STRUCTURE) | |
372 | { | |
524af0d6 | 373 | if (!gfc_simplify_expr (*result, 0)) |
36d3fb4c PT |
374 | m = MATCH_ERROR; |
375 | return m; | |
376 | } | |
46f4f794 TB |
377 | else if (m == MATCH_YES) |
378 | gfc_free_expr (*result); | |
36d3fb4c PT |
379 | |
380 | gfc_current_locus = old_loc; | |
381 | ||
294fbfc8 TS |
382 | m = gfc_match_name (name); |
383 | if (m != MATCH_YES) | |
384 | return m; | |
385 | ||
386 | if (gfc_find_symbol (name, NULL, 1, &sym)) | |
387 | return MATCH_ERROR; | |
388 | ||
c3f34952 TB |
389 | if (sym && sym->attr.generic) |
390 | dt_sym = gfc_find_dt_in_generic (sym); | |
391 | ||
294fbfc8 | 392 | if (sym == NULL |
c3f34952 | 393 | || (sym->attr.flavor != FL_PARAMETER |
f6288c24 | 394 | && (!dt_sym || !gfc_fl_struct (dt_sym->attr.flavor)))) |
294fbfc8 | 395 | { |
c4100eae | 396 | gfc_error ("Symbol %qs must be a PARAMETER in DATA statement at %C", |
294fbfc8 | 397 | name); |
89f1f37e | 398 | *result = NULL; |
294fbfc8 TS |
399 | return MATCH_ERROR; |
400 | } | |
f6288c24 | 401 | else if (dt_sym && gfc_fl_struct (dt_sym->attr.flavor)) |
c3f34952 | 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 | ||
5f0ba745 SK |
556 | /* Before parsing the rest of a DATA statement, check F2008:c1206. */ |
557 | if ((gfc_current_state () == COMP_FUNCTION | |
558 | || gfc_current_state () == COMP_SUBROUTINE) | |
559 | && gfc_state_stack->previous->state == COMP_INTERFACE) | |
560 | { | |
561 | gfc_error ("DATA statement at %C cannot appear within an INTERFACE"); | |
562 | return MATCH_ERROR; | |
563 | } | |
564 | ||
ca39e6f2 | 565 | set_in_match_data (true); |
2220652d | 566 | |
294fbfc8 TS |
567 | for (;;) |
568 | { | |
7b901ac4 KG |
569 | new_data = gfc_get_data (); |
570 | new_data->where = gfc_current_locus; | |
294fbfc8 | 571 | |
7b901ac4 | 572 | m = top_var_list (new_data); |
294fbfc8 TS |
573 | if (m != MATCH_YES) |
574 | goto cleanup; | |
575 | ||
7b901ac4 | 576 | m = top_val_list (new_data); |
294fbfc8 TS |
577 | if (m != MATCH_YES) |
578 | goto cleanup; | |
579 | ||
7b901ac4 KG |
580 | new_data->next = gfc_current_ns->data; |
581 | gfc_current_ns->data = new_data; | |
294fbfc8 TS |
582 | |
583 | if (gfc_match_eos () == MATCH_YES) | |
584 | break; | |
585 | ||
586 | gfc_match_char (','); /* Optional comma */ | |
587 | } | |
588 | ||
ca39e6f2 | 589 | set_in_match_data (false); |
2220652d | 590 | |
294fbfc8 TS |
591 | if (gfc_pure (NULL)) |
592 | { | |
593 | gfc_error ("DATA statement at %C is not allowed in a PURE procedure"); | |
594 | return MATCH_ERROR; | |
595 | } | |
ccd7751b | 596 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
f1f39033 | 597 | |
294fbfc8 TS |
598 | return MATCH_YES; |
599 | ||
600 | cleanup: | |
ca39e6f2 | 601 | set_in_match_data (false); |
7b901ac4 | 602 | gfc_free_data (new_data); |
294fbfc8 TS |
603 | return MATCH_ERROR; |
604 | } | |
605 | ||
606 | ||
607 | /************************ Declaration statements *********************/ | |
608 | ||
d3a9eea2 | 609 | |
f6288c24 FR |
610 | /* Like gfc_match_init_expr, but matches a 'clist' (old-style initialization |
611 | list). The difference here is the expression is a list of constants | |
6442a6f4 | 612 | and is surrounded by '/'. |
f6288c24 FR |
613 | The typespec ts must match the typespec of the variable which the |
614 | clist is initializing. | |
6442a6f4 | 615 | The arrayspec tells whether this should match a list of constants |
f6288c24 FR |
616 | corresponding to array elements or a scalar (as == NULL). */ |
617 | ||
618 | static match | |
619 | match_clist_expr (gfc_expr **result, gfc_typespec *ts, gfc_array_spec *as) | |
620 | { | |
621 | gfc_constructor_base array_head = NULL; | |
622 | gfc_expr *expr = NULL; | |
623 | match m; | |
624 | locus where; | |
625 | mpz_t repeat, size; | |
626 | bool scalar; | |
627 | int cmp; | |
628 | ||
629 | gcc_assert (ts); | |
630 | ||
631 | mpz_init_set_ui (repeat, 0); | |
632 | mpz_init (size); | |
633 | scalar = !as || !as->rank; | |
634 | ||
635 | /* We have already matched '/' - now look for a constant list, as with | |
636 | top_val_list from decl.c, but append the result to an array. */ | |
637 | if (gfc_match ("/") == MATCH_YES) | |
638 | { | |
639 | gfc_error ("Empty old style initializer list at %C"); | |
640 | goto cleanup; | |
641 | } | |
642 | ||
643 | where = gfc_current_locus; | |
644 | for (;;) | |
645 | { | |
646 | m = match_data_constant (&expr); | |
647 | if (m != MATCH_YES) | |
648 | expr = NULL; /* match_data_constant may set expr to garbage */ | |
649 | if (m == MATCH_NO) | |
650 | goto syntax; | |
651 | if (m == MATCH_ERROR) | |
652 | goto cleanup; | |
653 | ||
654 | /* Found r in repeat spec r*c; look for the constant to repeat. */ | |
655 | if ( gfc_match_char ('*') == MATCH_YES) | |
656 | { | |
657 | if (scalar) | |
658 | { | |
659 | gfc_error ("Repeat spec invalid in scalar initializer at %C"); | |
660 | goto cleanup; | |
661 | } | |
662 | if (expr->ts.type != BT_INTEGER) | |
663 | { | |
664 | gfc_error ("Repeat spec must be an integer at %C"); | |
665 | goto cleanup; | |
666 | } | |
667 | mpz_set (repeat, expr->value.integer); | |
668 | gfc_free_expr (expr); | |
669 | expr = NULL; | |
670 | ||
671 | m = match_data_constant (&expr); | |
672 | if (m == MATCH_NO) | |
673 | gfc_error ("Expected data constant after repeat spec at %C"); | |
674 | if (m != MATCH_YES) | |
675 | goto cleanup; | |
676 | } | |
677 | /* No repeat spec, we matched the data constant itself. */ | |
678 | else | |
679 | mpz_set_ui (repeat, 1); | |
680 | ||
681 | if (!scalar) | |
682 | { | |
683 | /* Add the constant initializer as many times as repeated. */ | |
684 | for (; mpz_cmp_ui (repeat, 0) > 0; mpz_sub_ui (repeat, repeat, 1)) | |
685 | { | |
686 | /* Make sure types of elements match */ | |
687 | if(ts && !gfc_compare_types (&expr->ts, ts) | |
688 | && !gfc_convert_type (expr, ts, 1)) | |
689 | goto cleanup; | |
690 | ||
691 | gfc_constructor_append_expr (&array_head, | |
692 | gfc_copy_expr (expr), &gfc_current_locus); | |
693 | } | |
694 | ||
695 | gfc_free_expr (expr); | |
696 | expr = NULL; | |
697 | } | |
698 | ||
699 | /* For scalar initializers quit after one element. */ | |
700 | else | |
701 | { | |
702 | if(gfc_match_char ('/') != MATCH_YES) | |
703 | { | |
704 | gfc_error ("End of scalar initializer expected at %C"); | |
705 | goto cleanup; | |
706 | } | |
707 | break; | |
708 | } | |
709 | ||
710 | if (gfc_match_char ('/') == MATCH_YES) | |
711 | break; | |
712 | if (gfc_match_char (',') == MATCH_NO) | |
713 | goto syntax; | |
714 | } | |
715 | ||
716 | /* Set up expr as an array constructor. */ | |
717 | if (!scalar) | |
718 | { | |
719 | expr = gfc_get_array_expr (ts->type, ts->kind, &where); | |
720 | expr->ts = *ts; | |
721 | expr->value.constructor = array_head; | |
722 | ||
723 | expr->rank = as->rank; | |
724 | expr->shape = gfc_get_shape (expr->rank); | |
725 | ||
726 | /* Validate sizes. */ | |
727 | gcc_assert (gfc_array_size (expr, &size)); | |
728 | gcc_assert (spec_size (as, &repeat)); | |
729 | cmp = mpz_cmp (size, repeat); | |
730 | if (cmp < 0) | |
731 | gfc_error ("Not enough elements in array initializer at %C"); | |
732 | else if (cmp > 0) | |
733 | gfc_error ("Too many elements in array initializer at %C"); | |
734 | if (cmp) | |
735 | goto cleanup; | |
736 | } | |
737 | ||
738 | /* Make sure scalar types match. */ | |
739 | else if (!gfc_compare_types (&expr->ts, ts) | |
740 | && !gfc_convert_type (expr, ts, 1)) | |
741 | goto cleanup; | |
742 | ||
743 | if (expr->ts.u.cl) | |
744 | expr->ts.u.cl->length_from_typespec = 1; | |
745 | ||
746 | *result = expr; | |
747 | mpz_clear (size); | |
748 | mpz_clear (repeat); | |
749 | return MATCH_YES; | |
750 | ||
751 | syntax: | |
752 | gfc_error ("Syntax error in old style initializer list at %C"); | |
753 | ||
754 | cleanup: | |
755 | if (expr) | |
756 | expr->value.constructor = NULL; | |
757 | gfc_free_expr (expr); | |
758 | gfc_constructor_free (array_head); | |
759 | mpz_clear (size); | |
760 | mpz_clear (repeat); | |
761 | return MATCH_ERROR; | |
762 | } | |
763 | ||
764 | ||
eea58adb | 765 | /* Auxiliary function to merge DIMENSION and CODIMENSION array specs. */ |
d3a9eea2 | 766 | |
524af0d6 | 767 | static bool |
d3a9eea2 TB |
768 | merge_array_spec (gfc_array_spec *from, gfc_array_spec *to, bool copy) |
769 | { | |
770 | int i; | |
771 | ||
63fbf586 TB |
772 | if ((from->type == AS_ASSUMED_RANK && to->corank) |
773 | || (to->type == AS_ASSUMED_RANK && from->corank)) | |
774 | { | |
775 | gfc_error ("The assumed-rank array at %C shall not have a codimension"); | |
524af0d6 | 776 | return false; |
63fbf586 | 777 | } |
c62c6622 | 778 | |
d3a9eea2 TB |
779 | if (to->rank == 0 && from->rank > 0) |
780 | { | |
781 | to->rank = from->rank; | |
782 | to->type = from->type; | |
783 | to->cray_pointee = from->cray_pointee; | |
784 | to->cp_was_assumed = from->cp_was_assumed; | |
785 | ||
786 | for (i = 0; i < to->corank; i++) | |
787 | { | |
788 | to->lower[from->rank + i] = to->lower[i]; | |
789 | to->upper[from->rank + i] = to->upper[i]; | |
790 | } | |
791 | for (i = 0; i < from->rank; i++) | |
792 | { | |
793 | if (copy) | |
794 | { | |
795 | to->lower[i] = gfc_copy_expr (from->lower[i]); | |
796 | to->upper[i] = gfc_copy_expr (from->upper[i]); | |
797 | } | |
798 | else | |
799 | { | |
800 | to->lower[i] = from->lower[i]; | |
801 | to->upper[i] = from->upper[i]; | |
802 | } | |
803 | } | |
804 | } | |
805 | else if (to->corank == 0 && from->corank > 0) | |
806 | { | |
807 | to->corank = from->corank; | |
808 | to->cotype = from->cotype; | |
809 | ||
810 | for (i = 0; i < from->corank; i++) | |
811 | { | |
812 | if (copy) | |
813 | { | |
814 | to->lower[to->rank + i] = gfc_copy_expr (from->lower[i]); | |
815 | to->upper[to->rank + i] = gfc_copy_expr (from->upper[i]); | |
816 | } | |
817 | else | |
818 | { | |
819 | to->lower[to->rank + i] = from->lower[i]; | |
820 | to->upper[to->rank + i] = from->upper[i]; | |
821 | } | |
822 | } | |
823 | } | |
63fbf586 | 824 | |
524af0d6 | 825 | return true; |
d3a9eea2 TB |
826 | } |
827 | ||
828 | ||
6de9cd9a DN |
829 | /* Match an intent specification. Since this can only happen after an |
830 | INTENT word, a legal intent-spec must follow. */ | |
831 | ||
832 | static sym_intent | |
833 | match_intent_spec (void) | |
834 | { | |
835 | ||
836 | if (gfc_match (" ( in out )") == MATCH_YES) | |
837 | return INTENT_INOUT; | |
838 | if (gfc_match (" ( in )") == MATCH_YES) | |
839 | return INTENT_IN; | |
840 | if (gfc_match (" ( out )") == MATCH_YES) | |
841 | return INTENT_OUT; | |
842 | ||
843 | gfc_error ("Bad INTENT specification at %C"); | |
844 | return INTENT_UNKNOWN; | |
845 | } | |
846 | ||
847 | ||
848 | /* Matches a character length specification, which is either a | |
e69afb29 | 849 | specification expression, '*', or ':'. */ |
6de9cd9a DN |
850 | |
851 | static match | |
e69afb29 | 852 | char_len_param_value (gfc_expr **expr, bool *deferred) |
6de9cd9a | 853 | { |
cba28dad JD |
854 | match m; |
855 | ||
e69afb29 SK |
856 | *expr = NULL; |
857 | *deferred = false; | |
858 | ||
6de9cd9a | 859 | if (gfc_match_char ('*') == MATCH_YES) |
e69afb29 SK |
860 | return MATCH_YES; |
861 | ||
862 | if (gfc_match_char (':') == MATCH_YES) | |
6de9cd9a | 863 | { |
98a819ea | 864 | if (!gfc_notify_std (GFC_STD_F2003, "deferred type parameter at %C")) |
e69afb29 SK |
865 | return MATCH_ERROR; |
866 | ||
867 | *deferred = true; | |
868 | ||
6de9cd9a DN |
869 | return MATCH_YES; |
870 | } | |
871 | ||
cba28dad | 872 | m = gfc_match_expr (expr); |
f37e928c | 873 | |
98a819ea SK |
874 | if (m == MATCH_NO || m == MATCH_ERROR) |
875 | return m; | |
876 | ||
877 | if (!gfc_expr_check_typed (*expr, gfc_current_ns, false)) | |
f37e928c DK |
878 | return MATCH_ERROR; |
879 | ||
98a819ea | 880 | if ((*expr)->expr_type == EXPR_FUNCTION) |
cba28dad | 881 | { |
8d48826b SK |
882 | if ((*expr)->ts.type == BT_INTEGER |
883 | || ((*expr)->ts.type == BT_UNKNOWN | |
884 | && strcmp((*expr)->symtree->name, "null") != 0)) | |
885 | return MATCH_YES; | |
886 | ||
887 | goto syntax; | |
888 | } | |
889 | else if ((*expr)->expr_type == EXPR_CONSTANT) | |
890 | { | |
891 | /* F2008, 4.4.3.1: The length is a type parameter; its kind is | |
892 | processor dependent and its value is greater than or equal to zero. | |
893 | F2008, 4.4.3.2: If the character length parameter value evaluates | |
894 | to a negative value, the length of character entities declared | |
895 | is zero. */ | |
896 | ||
897 | if ((*expr)->ts.type == BT_INTEGER) | |
cba28dad | 898 | { |
8d48826b SK |
899 | if (mpz_cmp_si ((*expr)->value.integer, 0) < 0) |
900 | mpz_set_si ((*expr)->value.integer, 0); | |
cba28dad | 901 | } |
8d48826b SK |
902 | else |
903 | goto syntax; | |
cba28dad | 904 | } |
8d48826b SK |
905 | else if ((*expr)->expr_type == EXPR_ARRAY) |
906 | goto syntax; | |
907 | else if ((*expr)->expr_type == EXPR_VARIABLE) | |
908 | { | |
fb42421e | 909 | bool t; |
8d48826b SK |
910 | gfc_expr *e; |
911 | ||
912 | e = gfc_copy_expr (*expr); | |
913 | ||
914 | /* This catches the invalid code "[character(m(2:3)) :: 'x', 'y']", | |
915 | which causes an ICE if gfc_reduce_init_expr() is called. */ | |
54b96a2d SK |
916 | if (e->ref && e->ref->type == REF_ARRAY |
917 | && e->ref->u.ar.type == AR_UNKNOWN | |
8d48826b SK |
918 | && e->ref->u.ar.dimen_type[0] == DIMEN_RANGE) |
919 | goto syntax; | |
920 | ||
fb42421e SK |
921 | t = gfc_reduce_init_expr (e); |
922 | ||
8d987deb SK |
923 | if (!t && e->ts.type == BT_UNKNOWN |
924 | && e->symtree->n.sym->attr.untyped == 1 | |
63ac6251 TK |
925 | && (flag_implicit_none |
926 | || e->symtree->n.sym->ns->seen_implicit_none == 1 | |
8d987deb | 927 | || e->symtree->n.sym->ns->parent->seen_implicit_none == 1)) |
fb42421e SK |
928 | { |
929 | gfc_free_expr (e); | |
930 | goto syntax; | |
931 | } | |
98a819ea | 932 | |
54b96a2d | 933 | if ((e->ref && e->ref->type == REF_ARRAY |
70112e2a | 934 | && e->ref->u.ar.type != AR_ELEMENT) |
8d48826b SK |
935 | || (!e->ref && e->expr_type == EXPR_ARRAY)) |
936 | { | |
937 | gfc_free_expr (e); | |
938 | goto syntax; | |
939 | } | |
940 | ||
941 | gfc_free_expr (e); | |
942 | } | |
98a819ea | 943 | |
cba28dad JD |
944 | return m; |
945 | ||
946 | syntax: | |
8d48826b | 947 | gfc_error ("Scalar INTEGER expression expected at %L", &(*expr)->where); |
cba28dad | 948 | return MATCH_ERROR; |
6de9cd9a DN |
949 | } |
950 | ||
951 | ||
952 | /* A character length is a '*' followed by a literal integer or a | |
953 | char_len_param_value in parenthesis. */ | |
954 | ||
955 | static match | |
62732c30 | 956 | match_char_length (gfc_expr **expr, bool *deferred, bool obsolescent_check) |
6de9cd9a | 957 | { |
5cf54585 | 958 | int length; |
6de9cd9a DN |
959 | match m; |
960 | ||
f5acf0f2 | 961 | *deferred = false; |
6de9cd9a DN |
962 | m = gfc_match_char ('*'); |
963 | if (m != MATCH_YES) | |
964 | return m; | |
965 | ||
5cf54585 | 966 | m = gfc_match_small_literal_int (&length, NULL); |
6de9cd9a DN |
967 | if (m == MATCH_ERROR) |
968 | return m; | |
969 | ||
970 | if (m == MATCH_YES) | |
971 | { | |
62732c30 | 972 | if (obsolescent_check |
524af0d6 | 973 | && !gfc_notify_std (GFC_STD_F95_OBS, "Old-style character length at %C")) |
e2ab8b09 | 974 | return MATCH_ERROR; |
b7e75771 | 975 | *expr = gfc_get_int_expr (gfc_default_integer_kind, NULL, length); |
6de9cd9a DN |
976 | return m; |
977 | } | |
978 | ||
979 | if (gfc_match_char ('(') == MATCH_NO) | |
980 | goto syntax; | |
981 | ||
e69afb29 | 982 | m = char_len_param_value (expr, deferred); |
1c8bcdf7 PT |
983 | if (m != MATCH_YES && gfc_matching_function) |
984 | { | |
985 | gfc_undo_symbols (); | |
986 | m = MATCH_YES; | |
987 | } | |
988 | ||
6de9cd9a DN |
989 | if (m == MATCH_ERROR) |
990 | return m; | |
991 | if (m == MATCH_NO) | |
992 | goto syntax; | |
993 | ||
994 | if (gfc_match_char (')') == MATCH_NO) | |
995 | { | |
996 | gfc_free_expr (*expr); | |
997 | *expr = NULL; | |
998 | goto syntax; | |
999 | } | |
1000 | ||
1001 | return MATCH_YES; | |
1002 | ||
1003 | syntax: | |
1004 | gfc_error ("Syntax error in character length specification at %C"); | |
1005 | return MATCH_ERROR; | |
1006 | } | |
1007 | ||
1008 | ||
9e35b386 EE |
1009 | /* Special subroutine for finding a symbol. Check if the name is found |
1010 | in the current name space. If not, and we're compiling a function or | |
1011 | subroutine and the parent compilation unit is an interface, then check | |
1012 | to see if the name we've been given is the name of the interface | |
1013 | (located in another namespace). */ | |
6de9cd9a DN |
1014 | |
1015 | static int | |
08a6b8e0 | 1016 | find_special (const char *name, gfc_symbol **result, bool allow_subroutine) |
6de9cd9a DN |
1017 | { |
1018 | gfc_state_data *s; | |
08a6b8e0 | 1019 | gfc_symtree *st; |
9e35b386 | 1020 | int i; |
6de9cd9a | 1021 | |
08a6b8e0 | 1022 | i = gfc_get_sym_tree (name, NULL, &st, allow_subroutine); |
d51347f9 | 1023 | if (i == 0) |
08a6b8e0 TB |
1024 | { |
1025 | *result = st ? st->n.sym : NULL; | |
1026 | goto end; | |
1027 | } | |
d51347f9 | 1028 | |
6de9cd9a DN |
1029 | if (gfc_current_state () != COMP_SUBROUTINE |
1030 | && gfc_current_state () != COMP_FUNCTION) | |
9e35b386 | 1031 | goto end; |
6de9cd9a DN |
1032 | |
1033 | s = gfc_state_stack->previous; | |
1034 | if (s == NULL) | |
9e35b386 | 1035 | goto end; |
6de9cd9a DN |
1036 | |
1037 | if (s->state != COMP_INTERFACE) | |
9e35b386 | 1038 | goto end; |
6de9cd9a | 1039 | if (s->sym == NULL) |
66e4ab31 | 1040 | goto end; /* Nameless interface. */ |
6de9cd9a DN |
1041 | |
1042 | if (strcmp (name, s->sym->name) == 0) | |
1043 | { | |
1044 | *result = s->sym; | |
1045 | return 0; | |
1046 | } | |
1047 | ||
9e35b386 EE |
1048 | end: |
1049 | return i; | |
6de9cd9a DN |
1050 | } |
1051 | ||
1052 | ||
1053 | /* Special subroutine for getting a symbol node associated with a | |
1054 | procedure name, used in SUBROUTINE and FUNCTION statements. The | |
1055 | symbol is created in the parent using with symtree node in the | |
1056 | child unit pointing to the symbol. If the current namespace has no | |
1057 | parent, then the symbol is just created in the current unit. */ | |
1058 | ||
1059 | static int | |
636dff67 | 1060 | get_proc_name (const char *name, gfc_symbol **result, bool module_fcn_entry) |
6de9cd9a DN |
1061 | { |
1062 | gfc_symtree *st; | |
1063 | gfc_symbol *sym; | |
a7ca4d8d | 1064 | int rc = 0; |
6de9cd9a | 1065 | |
1a492601 PT |
1066 | /* Module functions have to be left in their own namespace because |
1067 | they have potentially (almost certainly!) already been referenced. | |
1068 | In this sense, they are rather like external functions. This is | |
1069 | fixed up in resolve.c(resolve_entries), where the symbol name- | |
1070 | space is set to point to the master function, so that the fake | |
1071 | result mechanism can work. */ | |
1072 | if (module_fcn_entry) | |
6c12686b PT |
1073 | { |
1074 | /* Present if entry is declared to be a module procedure. */ | |
1075 | rc = gfc_find_symbol (name, gfc_current_ns->parent, 0, result); | |
aa84a9a5 | 1076 | |
6c12686b PT |
1077 | if (*result == NULL) |
1078 | rc = gfc_get_symbol (name, NULL, result); | |
2e32a71e | 1079 | else if (!gfc_get_symbol (name, NULL, &sym) && sym |
aa84a9a5 PT |
1080 | && (*result)->ts.type == BT_UNKNOWN |
1081 | && sym->attr.flavor == FL_UNKNOWN) | |
1082 | /* Pick up the typespec for the entry, if declared in the function | |
1083 | body. Note that this symbol is FL_UNKNOWN because it will | |
1084 | only have appeared in a type declaration. The local symtree | |
1085 | is set to point to the module symbol and a unique symtree | |
1086 | to the local version. This latter ensures a correct clearing | |
1087 | of the symbols. */ | |
2e32a71e PT |
1088 | { |
1089 | /* If the ENTRY proceeds its specification, we need to ensure | |
1090 | that this does not raise a "has no IMPLICIT type" error. */ | |
1091 | if (sym->ts.type == BT_UNKNOWN) | |
0e5a218b | 1092 | sym->attr.untyped = 1; |
2e32a71e | 1093 | |
0e5a218b | 1094 | (*result)->ts = sym->ts; |
2e32a71e PT |
1095 | |
1096 | /* Put the symbol in the procedure namespace so that, should | |
df2fba9e | 1097 | the ENTRY precede its specification, the specification |
2e32a71e PT |
1098 | can be applied. */ |
1099 | (*result)->ns = gfc_current_ns; | |
1100 | ||
1101 | gfc_find_sym_tree (name, gfc_current_ns, 0, &st); | |
1102 | st->n.sym = *result; | |
1103 | st = gfc_get_unique_symtree (gfc_current_ns); | |
2050626a | 1104 | sym->refs++; |
2e32a71e PT |
1105 | st->n.sym = sym; |
1106 | } | |
6c12686b | 1107 | } |
68ea355b PT |
1108 | else |
1109 | rc = gfc_get_symbol (name, gfc_current_ns->parent, result); | |
6de9cd9a | 1110 | |
a7ca4d8d PT |
1111 | if (rc) |
1112 | return rc; | |
1113 | ||
68ea355b | 1114 | sym = *result; |
79124116 PT |
1115 | if (sym->attr.proc == PROC_ST_FUNCTION) |
1116 | return rc; | |
6de9cd9a | 1117 | |
4668d6f9 PT |
1118 | if (sym->attr.module_procedure |
1119 | && sym->attr.if_source == IFSRC_IFBODY) | |
1120 | { | |
1121 | /* Create a partially populated interface symbol to carry the | |
1122 | characteristics of the procedure and the result. */ | |
c064374d PT |
1123 | sym->tlink = gfc_new_symbol (name, sym->ns); |
1124 | gfc_add_type (sym->tlink, &(sym->ts), | |
4668d6f9 | 1125 | &gfc_current_locus); |
c064374d | 1126 | gfc_copy_attr (&sym->tlink->attr, &sym->attr, NULL); |
4668d6f9 | 1127 | if (sym->attr.dimension) |
c064374d | 1128 | sym->tlink->as = gfc_copy_array_spec (sym->as); |
4668d6f9 PT |
1129 | |
1130 | /* Ideally, at this point, a copy would be made of the formal | |
1131 | arguments and their namespace. However, this does not appear | |
1132 | to be necessary, albeit at the expense of not being able to | |
1133 | use gfc_compare_interfaces directly. */ | |
1134 | ||
1135 | if (sym->result && sym->result != sym) | |
1136 | { | |
c064374d | 1137 | sym->tlink->result = sym->result; |
4668d6f9 PT |
1138 | sym->result = NULL; |
1139 | } | |
1140 | else if (sym->result) | |
1141 | { | |
c064374d | 1142 | sym->tlink->result = sym->tlink; |
4668d6f9 PT |
1143 | } |
1144 | } | |
1145 | else if (sym && !sym->gfc_new | |
1146 | && gfc_current_state () != COMP_INTERFACE) | |
68ea355b | 1147 | { |
cda7004b PT |
1148 | /* Trap another encompassed procedure with the same name. All |
1149 | these conditions are necessary to avoid picking up an entry | |
1150 | whose name clashes with that of the encompassing procedure; | |
2050626a | 1151 | this is handled using gsymbols to register unique, globally |
cda7004b | 1152 | accessible names. */ |
68ea355b | 1153 | if (sym->attr.flavor != 0 |
636dff67 SK |
1154 | && sym->attr.proc != 0 |
1155 | && (sym->attr.subroutine || sym->attr.function) | |
1156 | && sym->attr.if_source != IFSRC_UNKNOWN) | |
fea70c99 MLI |
1157 | gfc_error_now ("Procedure %qs at %C is already defined at %L", |
1158 | name, &sym->declared_at); | |
68ea355b | 1159 | |
fd3e70af JD |
1160 | /* Trap a procedure with a name the same as interface in the |
1161 | encompassing scope. */ | |
1162 | if (sym->attr.generic != 0 | |
2305fa31 JD |
1163 | && (sym->attr.subroutine || sym->attr.function) |
1164 | && !sym->attr.mod_proc) | |
fea70c99 MLI |
1165 | gfc_error_now ("Name %qs at %C is already defined" |
1166 | " as a generic interface at %L", | |
1167 | name, &sym->declared_at); | |
fd3e70af | 1168 | |
68ea355b PT |
1169 | /* Trap declarations of attributes in encompassing scope. The |
1170 | signature for this is that ts.kind is set. Legitimate | |
1171 | references only set ts.type. */ | |
1172 | if (sym->ts.kind != 0 | |
636dff67 SK |
1173 | && !sym->attr.implicit_type |
1174 | && sym->attr.proc == 0 | |
1175 | && gfc_current_ns->parent != NULL | |
1176 | && sym->attr.access == 0 | |
1177 | && !module_fcn_entry) | |
fea70c99 MLI |
1178 | gfc_error_now ("Procedure %qs at %C has an explicit interface " |
1179 | "and must not have attributes declared at %L", | |
1180 | name, &sym->declared_at); | |
68ea355b PT |
1181 | } |
1182 | ||
1183 | if (gfc_current_ns->parent == NULL || *result == NULL) | |
1184 | return rc; | |
6de9cd9a | 1185 | |
1a492601 PT |
1186 | /* Module function entries will already have a symtree in |
1187 | the current namespace but will need one at module level. */ | |
1188 | if (module_fcn_entry) | |
6c12686b PT |
1189 | { |
1190 | /* Present if entry is declared to be a module procedure. */ | |
1191 | rc = gfc_find_sym_tree (name, gfc_current_ns->parent, 0, &st); | |
1192 | if (st == NULL) | |
1193 | st = gfc_new_symtree (&gfc_current_ns->parent->sym_root, name); | |
1194 | } | |
1a492601 PT |
1195 | else |
1196 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); | |
6de9cd9a | 1197 | |
6de9cd9a DN |
1198 | st->n.sym = sym; |
1199 | sym->refs++; | |
1200 | ||
66e4ab31 | 1201 | /* See if the procedure should be a module procedure. */ |
6de9cd9a | 1202 | |
1a492601 | 1203 | if (((sym->ns->proc_name != NULL |
6c12686b PT |
1204 | && sym->ns->proc_name->attr.flavor == FL_MODULE |
1205 | && sym->attr.proc != PROC_MODULE) | |
1206 | || (module_fcn_entry && sym->attr.proc != PROC_MODULE)) | |
524af0d6 | 1207 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
6de9cd9a DN |
1208 | rc = 2; |
1209 | ||
1210 | return rc; | |
1211 | } | |
1212 | ||
1213 | ||
a8b3b0b6 CR |
1214 | /* Verify that the given symbol representing a parameter is C |
1215 | interoperable, by checking to see if it was marked as such after | |
1216 | its declaration. If the given symbol is not interoperable, a | |
1217 | warning is reported, thus removing the need to return the status to | |
1218 | the calling function. The standard does not require the user use | |
1219 | one of the iso_c_binding named constants to declare an | |
1220 | interoperable parameter, but we can't be sure if the param is C | |
1221 | interop or not if the user doesn't. For example, integer(4) may be | |
1222 | legal Fortran, but doesn't have meaning in C. It may interop with | |
1223 | a number of the C types, which causes a problem because the | |
1224 | compiler can't know which one. This code is almost certainly not | |
1225 | portable, and the user will get what they deserve if the C type | |
1226 | across platforms isn't always interoperable with integer(4). If | |
1227 | the user had used something like integer(c_int) or integer(c_long), | |
1228 | the compiler could have automatically handled the varying sizes | |
1229 | across platforms. */ | |
1230 | ||
524af0d6 | 1231 | bool |
00820a2a | 1232 | gfc_verify_c_interop_param (gfc_symbol *sym) |
a8b3b0b6 CR |
1233 | { |
1234 | int is_c_interop = 0; | |
524af0d6 | 1235 | bool retval = true; |
a8b3b0b6 CR |
1236 | |
1237 | /* We check implicitly typed variables in symbol.c:gfc_set_default_type(). | |
1238 | Don't repeat the checks here. */ | |
1239 | if (sym->attr.implicit_type) | |
524af0d6 | 1240 | return true; |
f5acf0f2 | 1241 | |
a8b3b0b6 CR |
1242 | /* For subroutines or functions that are passed to a BIND(C) procedure, |
1243 | they're interoperable if they're BIND(C) and their params are all | |
1244 | interoperable. */ | |
1245 | if (sym->attr.flavor == FL_PROCEDURE) | |
1246 | { | |
1247 | if (sym->attr.is_bind_c == 0) | |
1248 | { | |
4daa149b TB |
1249 | gfc_error_now ("Procedure %qs at %L must have the BIND(C) " |
1250 | "attribute to be C interoperable", sym->name, | |
1251 | &(sym->declared_at)); | |
524af0d6 | 1252 | return false; |
a8b3b0b6 CR |
1253 | } |
1254 | else | |
1255 | { | |
1256 | if (sym->attr.is_c_interop == 1) | |
1257 | /* We've already checked this procedure; don't check it again. */ | |
524af0d6 | 1258 | return true; |
a8b3b0b6 CR |
1259 | else |
1260 | return verify_bind_c_sym (sym, &(sym->ts), sym->attr.in_common, | |
1261 | sym->common_block); | |
1262 | } | |
1263 | } | |
f5acf0f2 | 1264 | |
a8b3b0b6 CR |
1265 | /* See if we've stored a reference to a procedure that owns sym. */ |
1266 | if (sym->ns != NULL && sym->ns->proc_name != NULL) | |
1267 | { | |
1268 | if (sym->ns->proc_name->attr.is_bind_c == 1) | |
1269 | { | |
524af0d6 | 1270 | is_c_interop = (gfc_verify_c_interop(&(sym->ts)) ? 1 : 0); |
a8b3b0b6 CR |
1271 | |
1272 | if (is_c_interop != 1) | |
1273 | { | |
1274 | /* Make personalized messages to give better feedback. */ | |
1275 | if (sym->ts.type == BT_DERIVED) | |
c4100eae MLI |
1276 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1277 | "BIND(C) procedure %qs but is not C interoperable " | |
1278 | "because derived type %qs is not C interoperable", | |
a8b3b0b6 | 1279 | sym->name, &(sym->declared_at), |
f5acf0f2 | 1280 | sym->ns->proc_name->name, |
bc21d315 | 1281 | sym->ts.u.derived->name); |
00820a2a | 1282 | else if (sym->ts.type == BT_CLASS) |
c4100eae MLI |
1283 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1284 | "BIND(C) procedure %qs but is not C interoperable " | |
00820a2a JW |
1285 | "because it is polymorphic", |
1286 | sym->name, &(sym->declared_at), | |
1287 | sym->ns->proc_name->name); | |
4daa149b | 1288 | else if (warn_c_binding_type) |
48749dbc MLI |
1289 | gfc_warning (OPT_Wc_binding_type, |
1290 | "Variable %qs at %L is a dummy argument of the " | |
1291 | "BIND(C) procedure %qs but may not be C " | |
a8b3b0b6 CR |
1292 | "interoperable", |
1293 | sym->name, &(sym->declared_at), | |
1294 | sym->ns->proc_name->name); | |
1295 | } | |
aa5e22f0 CR |
1296 | |
1297 | /* Character strings are only C interoperable if they have a | |
1298 | length of 1. */ | |
1299 | if (sym->ts.type == BT_CHARACTER) | |
1300 | { | |
bc21d315 | 1301 | gfc_charlen *cl = sym->ts.u.cl; |
aa5e22f0 CR |
1302 | if (!cl || !cl->length || cl->length->expr_type != EXPR_CONSTANT |
1303 | || mpz_cmp_si (cl->length->value.integer, 1) != 0) | |
1304 | { | |
c4100eae | 1305 | gfc_error ("Character argument %qs at %L " |
aa5e22f0 | 1306 | "must be length 1 because " |
c4100eae | 1307 | "procedure %qs is BIND(C)", |
aa5e22f0 CR |
1308 | sym->name, &sym->declared_at, |
1309 | sym->ns->proc_name->name); | |
524af0d6 | 1310 | retval = false; |
aa5e22f0 CR |
1311 | } |
1312 | } | |
1313 | ||
a8b3b0b6 CR |
1314 | /* We have to make sure that any param to a bind(c) routine does |
1315 | not have the allocatable, pointer, or optional attributes, | |
1316 | according to J3/04-007, section 5.1. */ | |
60f6ca95 | 1317 | if (sym->attr.allocatable == 1 |
a4d9b221 TB |
1318 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable %qs at %L with " |
1319 | "ALLOCATABLE attribute in procedure %qs " | |
60f6ca95 TB |
1320 | "with BIND(C)", sym->name, |
1321 | &(sym->declared_at), | |
1322 | sym->ns->proc_name->name)) | |
1323 | retval = false; | |
1324 | ||
1325 | if (sym->attr.pointer == 1 | |
a4d9b221 TB |
1326 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable %qs at %L with " |
1327 | "POINTER attribute in procedure %qs " | |
60f6ca95 TB |
1328 | "with BIND(C)", sym->name, |
1329 | &(sym->declared_at), | |
1330 | sym->ns->proc_name->name)) | |
1331 | retval = false; | |
1332 | ||
1333 | if ((sym->attr.allocatable || sym->attr.pointer) && !sym->as) | |
a8b3b0b6 | 1334 | { |
c4100eae MLI |
1335 | gfc_error ("Scalar variable %qs at %L with POINTER or " |
1336 | "ALLOCATABLE in procedure %qs with BIND(C) is not yet" | |
60f6ca95 | 1337 | " supported", sym->name, &(sym->declared_at), |
a8b3b0b6 | 1338 | sym->ns->proc_name->name); |
524af0d6 | 1339 | retval = false; |
a8b3b0b6 CR |
1340 | } |
1341 | ||
2e8d9212 | 1342 | if (sym->attr.optional == 1 && sym->attr.value) |
a8b3b0b6 | 1343 | { |
c4100eae MLI |
1344 | gfc_error ("Variable %qs at %L cannot have both the OPTIONAL " |
1345 | "and the VALUE attribute because procedure %qs " | |
2e8d9212 | 1346 | "is BIND(C)", sym->name, &(sym->declared_at), |
a8b3b0b6 | 1347 | sym->ns->proc_name->name); |
524af0d6 | 1348 | retval = false; |
a8b3b0b6 | 1349 | } |
2e8d9212 | 1350 | else if (sym->attr.optional == 1 |
a4d9b221 | 1351 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable %qs " |
524af0d6 | 1352 | "at %L with OPTIONAL attribute in " |
70112e2a PT |
1353 | "procedure %qs which is BIND(C)", |
1354 | sym->name, &(sym->declared_at), | |
524af0d6 JB |
1355 | sym->ns->proc_name->name)) |
1356 | retval = false; | |
a8b3b0b6 CR |
1357 | |
1358 | /* Make sure that if it has the dimension attribute, that it is | |
95d47b8d TB |
1359 | either assumed size or explicit shape. Deferred shape is already |
1360 | covered by the pointer/allocatable attribute. */ | |
1361 | if (sym->as != NULL && sym->as->type == AS_ASSUMED_SHAPE | |
2a2703a2 | 1362 | && !gfc_notify_std (GFC_STD_F2008_TS, "Assumed-shape array %qs " |
524af0d6 | 1363 | "at %L as dummy argument to the BIND(C) " |
811582ec | 1364 | "procedure %qs at %L", sym->name, |
70112e2a PT |
1365 | &(sym->declared_at), |
1366 | sym->ns->proc_name->name, | |
524af0d6 JB |
1367 | &(sym->ns->proc_name->declared_at))) |
1368 | retval = false; | |
a8b3b0b6 CR |
1369 | } |
1370 | } | |
1371 | ||
1372 | return retval; | |
1373 | } | |
1374 | ||
1375 | ||
cf2b3c22 | 1376 | |
a8b3b0b6 | 1377 | /* Function called by variable_decl() that adds a name to the symbol table. */ |
6de9cd9a | 1378 | |
524af0d6 | 1379 | static bool |
e69afb29 | 1380 | build_sym (const char *name, gfc_charlen *cl, bool cl_deferred, |
636dff67 | 1381 | gfc_array_spec **as, locus *var_locus) |
6de9cd9a DN |
1382 | { |
1383 | symbol_attribute attr; | |
1384 | gfc_symbol *sym; | |
1e6025b6 | 1385 | int upper; |
6de9cd9a | 1386 | |
9e35b386 | 1387 | if (gfc_get_symbol (name, NULL, &sym)) |
524af0d6 | 1388 | return false; |
6de9cd9a | 1389 | |
1e6025b6 TK |
1390 | /* Check if the name has already been defined as a type. The |
1391 | first letter of the symtree will be in upper case then. Of | |
1392 | course, this is only necessary if the upper case letter is | |
1393 | actually different. */ | |
1394 | ||
1395 | upper = TOUPPER(name[0]); | |
1396 | if (upper != name[0]) | |
1397 | { | |
1398 | char u_name[GFC_MAX_SYMBOL_LEN + 1]; | |
1399 | gfc_symtree *st; | |
1400 | int nlen; | |
1401 | ||
1402 | nlen = strlen(name); | |
1403 | gcc_assert (nlen <= GFC_MAX_SYMBOL_LEN); | |
1404 | strncpy (u_name, name, nlen + 1); | |
1405 | u_name[0] = upper; | |
1406 | ||
1407 | st = gfc_find_symtree (gfc_current_ns->sym_root, u_name); | |
1408 | ||
f6288c24 FR |
1409 | /* STRUCTURE types can alias symbol names */ |
1410 | if (st != 0 && st->n.sym->attr.flavor != FL_STRUCT) | |
1e6025b6 TK |
1411 | { |
1412 | gfc_error ("Symbol %qs at %C also declared as a type at %L", name, | |
1413 | &st->n.sym->declared_at); | |
1414 | return false; | |
1415 | } | |
1416 | } | |
1417 | ||
66e4ab31 | 1418 | /* Start updating the symbol table. Add basic type attribute if present. */ |
6de9cd9a | 1419 | if (current_ts.type != BT_UNKNOWN |
636dff67 SK |
1420 | && (sym->attr.implicit_type == 0 |
1421 | || !gfc_compare_types (&sym->ts, ¤t_ts)) | |
524af0d6 JB |
1422 | && !gfc_add_type (sym, ¤t_ts, var_locus)) |
1423 | return false; | |
6de9cd9a DN |
1424 | |
1425 | if (sym->ts.type == BT_CHARACTER) | |
e69afb29 SK |
1426 | { |
1427 | sym->ts.u.cl = cl; | |
1428 | sym->ts.deferred = cl_deferred; | |
1429 | } | |
6de9cd9a DN |
1430 | |
1431 | /* Add dimension attribute if present. */ | |
524af0d6 JB |
1432 | if (!gfc_set_array_spec (sym, *as, var_locus)) |
1433 | return false; | |
6de9cd9a DN |
1434 | *as = NULL; |
1435 | ||
1436 | /* Add attribute to symbol. The copy is so that we can reset the | |
1437 | dimension attribute. */ | |
1438 | attr = current_attr; | |
1439 | attr.dimension = 0; | |
be59db2d | 1440 | attr.codimension = 0; |
6de9cd9a | 1441 | |
524af0d6 JB |
1442 | if (!gfc_copy_attr (&sym->attr, &attr, var_locus)) |
1443 | return false; | |
6de9cd9a | 1444 | |
a8b3b0b6 CR |
1445 | /* Finish any work that may need to be done for the binding label, |
1446 | if it's a bind(c). The bind(c) attr is found before the symbol | |
1447 | is made, and before the symbol name (for data decls), so the | |
1448 | current_ts is holding the binding label, or nothing if the | |
1449 | name= attr wasn't given. Therefore, test here if we're dealing | |
1450 | with a bind(c) and make sure the binding label is set correctly. */ | |
1451 | if (sym->attr.is_bind_c == 1) | |
1452 | { | |
62603fae | 1453 | if (!sym->binding_label) |
a8b3b0b6 | 1454 | { |
ad4a2f64 TB |
1455 | /* Set the binding label and verify that if a NAME= was specified |
1456 | then only one identifier was in the entity-decl-list. */ | |
70112e2a | 1457 | if (!set_binding_label (&sym->binding_label, sym->name, |
524af0d6 JB |
1458 | num_idents_on_line)) |
1459 | return false; | |
a8b3b0b6 CR |
1460 | } |
1461 | } | |
1462 | ||
1463 | /* See if we know we're in a common block, and if it's a bind(c) | |
1464 | common then we need to make sure we're an interoperable type. */ | |
1465 | if (sym->attr.in_common == 1) | |
1466 | { | |
1467 | /* Test the common block object. */ | |
1468 | if (sym->common_block != NULL && sym->common_block->is_bind_c == 1 | |
1469 | && sym->ts.is_c_interop != 1) | |
1470 | { | |
4daa149b | 1471 | gfc_error_now ("Variable %qs in common block %qs at %C " |
a8b3b0b6 | 1472 | "must be declared with a C interoperable " |
4daa149b | 1473 | "kind since common block %qs is BIND(C)", |
a8b3b0b6 CR |
1474 | sym->name, sym->common_block->name, |
1475 | sym->common_block->name); | |
1476 | gfc_clear_error (); | |
1477 | } | |
1478 | } | |
1479 | ||
9a3db5a3 PT |
1480 | sym->attr.implied_index = 0; |
1481 | ||
528622fd | 1482 | if (sym->ts.type == BT_CLASS) |
9b6da3c7 | 1483 | return gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as); |
cf2b3c22 | 1484 | |
524af0d6 | 1485 | return true; |
6de9cd9a DN |
1486 | } |
1487 | ||
636dff67 | 1488 | |
df7cc9b5 | 1489 | /* Set character constant to the given length. The constant will be padded or |
d2848082 DK |
1490 | truncated. If we're inside an array constructor without a typespec, we |
1491 | additionally check that all elements have the same length; check_len -1 | |
1492 | means no checking. */ | |
df7cc9b5 FW |
1493 | |
1494 | void | |
d2848082 | 1495 | gfc_set_constant_character_len (int len, gfc_expr *expr, int check_len) |
df7cc9b5 | 1496 | { |
00660189 | 1497 | gfc_char_t *s; |
df7cc9b5 FW |
1498 | int slen; |
1499 | ||
834e9dbb SK |
1500 | if (expr->ts.type != BT_CHARACTER) |
1501 | return; | |
63af1586 | 1502 | |
b441ae1d SK |
1503 | if (expr->expr_type != EXPR_CONSTANT) |
1504 | { | |
1505 | gfc_error_now ("CHARACTER length must be a constant at %L", &expr->where); | |
1506 | return; | |
1507 | } | |
df7cc9b5 FW |
1508 | |
1509 | slen = expr->value.character.length; | |
1510 | if (len != slen) | |
1511 | { | |
00660189 FXC |
1512 | s = gfc_get_wide_string (len + 1); |
1513 | memcpy (s, expr->value.character.string, | |
1514 | MIN (len, slen) * sizeof (gfc_char_t)); | |
df7cc9b5 | 1515 | if (len > slen) |
00660189 | 1516 | gfc_wide_memset (&s[slen], ' ', len - slen); |
2220652d | 1517 | |
a96c39ea | 1518 | if (warn_character_truncation && slen > len) |
4daa149b TB |
1519 | gfc_warning_now (OPT_Wcharacter_truncation, |
1520 | "CHARACTER expression at %L is being truncated " | |
1521 | "(%d/%d)", &expr->where, slen, len); | |
2220652d PT |
1522 | |
1523 | /* Apply the standard by 'hand' otherwise it gets cleared for | |
1524 | initializers. */ | |
d2848082 DK |
1525 | if (check_len != -1 && slen != check_len |
1526 | && !(gfc_option.allow_std & GFC_STD_GNU)) | |
2220652d PT |
1527 | gfc_error_now ("The CHARACTER elements of the array constructor " |
1528 | "at %L must have the same length (%d/%d)", | |
d2848082 | 1529 | &expr->where, slen, check_len); |
2220652d | 1530 | |
150675a8 | 1531 | s[len] = '\0'; |
cede9502 | 1532 | free (expr->value.character.string); |
df7cc9b5 FW |
1533 | expr->value.character.string = s; |
1534 | expr->value.character.length = len; | |
1535 | } | |
1536 | } | |
6de9cd9a | 1537 | |
25d8f0a2 | 1538 | |
d51347f9 | 1539 | /* Function to create and update the enumerator history |
25d8f0a2 | 1540 | using the information passed as arguments. |
d51347f9 TB |
1541 | Pointer "max_enum" is also updated, to point to |
1542 | enum history node containing largest initializer. | |
25d8f0a2 TS |
1543 | |
1544 | SYM points to the symbol node of enumerator. | |
66e4ab31 | 1545 | INIT points to its enumerator value. */ |
25d8f0a2 | 1546 | |
d51347f9 | 1547 | static void |
636dff67 | 1548 | create_enum_history (gfc_symbol *sym, gfc_expr *init) |
25d8f0a2 TS |
1549 | { |
1550 | enumerator_history *new_enum_history; | |
1551 | gcc_assert (sym != NULL && init != NULL); | |
1552 | ||
ece3f663 | 1553 | new_enum_history = XCNEW (enumerator_history); |
25d8f0a2 TS |
1554 | |
1555 | new_enum_history->sym = sym; | |
1556 | new_enum_history->initializer = init; | |
1557 | new_enum_history->next = NULL; | |
1558 | ||
1559 | if (enum_history == NULL) | |
1560 | { | |
1561 | enum_history = new_enum_history; | |
1562 | max_enum = enum_history; | |
1563 | } | |
1564 | else | |
1565 | { | |
1566 | new_enum_history->next = enum_history; | |
1567 | enum_history = new_enum_history; | |
1568 | ||
d51347f9 | 1569 | if (mpz_cmp (max_enum->initializer->value.integer, |
25d8f0a2 | 1570 | new_enum_history->initializer->value.integer) < 0) |
636dff67 | 1571 | max_enum = new_enum_history; |
25d8f0a2 TS |
1572 | } |
1573 | } | |
1574 | ||
1575 | ||
d51347f9 | 1576 | /* Function to free enum kind history. */ |
25d8f0a2 | 1577 | |
d51347f9 | 1578 | void |
636dff67 | 1579 | gfc_free_enum_history (void) |
25d8f0a2 | 1580 | { |
d51347f9 TB |
1581 | enumerator_history *current = enum_history; |
1582 | enumerator_history *next; | |
25d8f0a2 TS |
1583 | |
1584 | while (current != NULL) | |
1585 | { | |
1586 | next = current->next; | |
cede9502 | 1587 | free (current); |
25d8f0a2 TS |
1588 | current = next; |
1589 | } | |
1590 | max_enum = NULL; | |
1591 | enum_history = NULL; | |
1592 | } | |
1593 | ||
1594 | ||
6de9cd9a DN |
1595 | /* Function called by variable_decl() that adds an initialization |
1596 | expression to a symbol. */ | |
1597 | ||
524af0d6 | 1598 | static bool |
66e4ab31 | 1599 | add_init_expr_to_sym (const char *name, gfc_expr **initp, locus *var_locus) |
6de9cd9a DN |
1600 | { |
1601 | symbol_attribute attr; | |
1602 | gfc_symbol *sym; | |
1603 | gfc_expr *init; | |
1604 | ||
1605 | init = *initp; | |
08a6b8e0 | 1606 | if (find_special (name, &sym, false)) |
524af0d6 | 1607 | return false; |
6de9cd9a DN |
1608 | |
1609 | attr = sym->attr; | |
1610 | ||
1611 | /* If this symbol is confirming an implicit parameter type, | |
1612 | then an initialization expression is not allowed. */ | |
1613 | if (attr.flavor == FL_PARAMETER | |
1614 | && sym->value != NULL | |
1615 | && *initp != NULL) | |
1616 | { | |
c4100eae | 1617 | gfc_error ("Initializer not allowed for PARAMETER %qs at %C", |
6de9cd9a | 1618 | sym->name); |
524af0d6 | 1619 | return false; |
6de9cd9a DN |
1620 | } |
1621 | ||
1622 | if (init == NULL) | |
1623 | { | |
1624 | /* An initializer is required for PARAMETER declarations. */ | |
1625 | if (attr.flavor == FL_PARAMETER) | |
1626 | { | |
1627 | gfc_error ("PARAMETER at %L is missing an initializer", var_locus); | |
524af0d6 | 1628 | return false; |
6de9cd9a DN |
1629 | } |
1630 | } | |
1631 | else | |
1632 | { | |
1633 | /* If a variable appears in a DATA block, it cannot have an | |
1de8a836 | 1634 | initializer. */ |
6de9cd9a DN |
1635 | if (sym->attr.data) |
1636 | { | |
c4100eae | 1637 | gfc_error ("Variable %qs at %C with an initializer already " |
636dff67 | 1638 | "appears in a DATA statement", sym->name); |
524af0d6 | 1639 | return false; |
6de9cd9a DN |
1640 | } |
1641 | ||
75d17889 | 1642 | /* Check if the assignment can happen. This has to be put off |
80f95228 | 1643 | until later for derived type variables and procedure pointers. */ |
f6288c24 | 1644 | if (!gfc_bt_struct (sym->ts.type) && !gfc_bt_struct (init->ts.type) |
cf2b3c22 | 1645 | && sym->ts.type != BT_CLASS && init->ts.type != BT_CLASS |
f5acf0f2 | 1646 | && !sym->attr.proc_pointer |
524af0d6 JB |
1647 | && !gfc_check_assign_symbol (sym, NULL, init)) |
1648 | return false; | |
6de9cd9a | 1649 | |
bc21d315 | 1650 | if (sym->ts.type == BT_CHARACTER && sym->ts.u.cl |
51b128a0 | 1651 | && init->ts.type == BT_CHARACTER) |
df7cc9b5 FW |
1652 | { |
1653 | /* Update symbol character length according initializer. */ | |
524af0d6 JB |
1654 | if (!gfc_check_assign_symbol (sym, NULL, init)) |
1655 | return false; | |
51b128a0 | 1656 | |
bc21d315 | 1657 | if (sym->ts.u.cl->length == NULL) |
df7cc9b5 | 1658 | { |
a99288e5 | 1659 | int clen; |
66e4ab31 SK |
1660 | /* If there are multiple CHARACTER variables declared on the |
1661 | same line, we don't want them to share the same length. */ | |
b76e28c6 | 1662 | sym->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
96f4873b | 1663 | |
a99288e5 PT |
1664 | if (sym->attr.flavor == FL_PARAMETER) |
1665 | { | |
1666 | if (init->expr_type == EXPR_CONSTANT) | |
1667 | { | |
1668 | clen = init->value.character.length; | |
b7e75771 JD |
1669 | sym->ts.u.cl->length |
1670 | = gfc_get_int_expr (gfc_default_integer_kind, | |
1671 | NULL, clen); | |
a99288e5 PT |
1672 | } |
1673 | else if (init->expr_type == EXPR_ARRAY) | |
1674 | { | |
dc0f176a | 1675 | if (init->ts.u.cl) |
39abef62 LK |
1676 | { |
1677 | const gfc_expr *length = init->ts.u.cl->length; | |
1678 | if (length->expr_type != EXPR_CONSTANT) | |
1679 | { | |
1680 | gfc_error ("Cannot initialize parameter array " | |
1681 | "at %L " | |
1682 | "with variable length elements", | |
1683 | &sym->declared_at); | |
1684 | return false; | |
1685 | } | |
1686 | clen = mpz_get_si (length->value.integer); | |
1687 | } | |
dc0f176a SK |
1688 | else if (init->value.constructor) |
1689 | { | |
1690 | gfc_constructor *c; | |
70112e2a | 1691 | c = gfc_constructor_first (init->value.constructor); |
dc0f176a SK |
1692 | clen = c->expr->value.character.length; |
1693 | } | |
1694 | else | |
1695 | gcc_unreachable (); | |
b7e75771 JD |
1696 | sym->ts.u.cl->length |
1697 | = gfc_get_int_expr (gfc_default_integer_kind, | |
1698 | NULL, clen); | |
a99288e5 | 1699 | } |
bc21d315 JW |
1700 | else if (init->ts.u.cl && init->ts.u.cl->length) |
1701 | sym->ts.u.cl->length = | |
1702 | gfc_copy_expr (sym->value->ts.u.cl->length); | |
a99288e5 | 1703 | } |
df7cc9b5 FW |
1704 | } |
1705 | /* Update initializer character length according symbol. */ | |
bc21d315 | 1706 | else if (sym->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
df7cc9b5 | 1707 | { |
d30ecc9c SK |
1708 | int len; |
1709 | ||
1710 | if (!gfc_specification_expr (sym->ts.u.cl->length)) | |
1711 | return false; | |
1712 | ||
1713 | len = mpz_get_si (sym->ts.u.cl->length->value.integer); | |
df7cc9b5 FW |
1714 | |
1715 | if (init->expr_type == EXPR_CONSTANT) | |
d2848082 | 1716 | gfc_set_constant_character_len (len, init, -1); |
df7cc9b5 FW |
1717 | else if (init->expr_type == EXPR_ARRAY) |
1718 | { | |
b7e75771 JD |
1719 | gfc_constructor *c; |
1720 | ||
dcdc7b6c PT |
1721 | /* Build a new charlen to prevent simplification from |
1722 | deleting the length before it is resolved. */ | |
b76e28c6 | 1723 | init->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
bc21d315 | 1724 | init->ts.u.cl->length = gfc_copy_expr (sym->ts.u.cl->length); |
dcdc7b6c | 1725 | |
b7e75771 JD |
1726 | for (c = gfc_constructor_first (init->value.constructor); |
1727 | c; c = gfc_constructor_next (c)) | |
1728 | gfc_set_constant_character_len (len, c->expr, -1); | |
df7cc9b5 FW |
1729 | } |
1730 | } | |
1731 | } | |
1732 | ||
f5ca06e6 DK |
1733 | /* If sym is implied-shape, set its upper bounds from init. */ |
1734 | if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension | |
1735 | && sym->as->type == AS_IMPLIED_SHAPE) | |
1736 | { | |
1737 | int dim; | |
1738 | ||
1739 | if (init->rank == 0) | |
1740 | { | |
1741 | gfc_error ("Can't initialize implied-shape array at %L" | |
1742 | " with scalar", &sym->declared_at); | |
524af0d6 | 1743 | return false; |
f5ca06e6 | 1744 | } |
f5ca06e6 DK |
1745 | |
1746 | /* Shape should be present, we get an initialization expression. */ | |
1747 | gcc_assert (init->shape); | |
1748 | ||
1749 | for (dim = 0; dim < sym->as->rank; ++dim) | |
1750 | { | |
1751 | int k; | |
cdffe788 | 1752 | gfc_expr *e, *lower; |
f5acf0f2 | 1753 | |
f5ca06e6 | 1754 | lower = sym->as->lower[dim]; |
cdffe788 | 1755 | |
70112e2a | 1756 | /* If the lower bound is an array element from another |
cdffe788 SK |
1757 | parameterized array, then it is marked with EXPR_VARIABLE and |
1758 | is an initialization expression. Try to reduce it. */ | |
1759 | if (lower->expr_type == EXPR_VARIABLE) | |
1760 | gfc_reduce_init_expr (lower); | |
1761 | ||
1762 | if (lower->expr_type == EXPR_CONSTANT) | |
1763 | { | |
1764 | /* All dimensions must be without upper bound. */ | |
1765 | gcc_assert (!sym->as->upper[dim]); | |
1766 | ||
1767 | k = lower->ts.kind; | |
1768 | e = gfc_get_constant_expr (BT_INTEGER, k, &sym->declared_at); | |
1769 | mpz_add (e->value.integer, lower->value.integer, | |
1770 | init->shape[dim]); | |
1771 | mpz_sub_ui (e->value.integer, e->value.integer, 1); | |
1772 | sym->as->upper[dim] = e; | |
1773 | } | |
1774 | else | |
f5ca06e6 DK |
1775 | { |
1776 | gfc_error ("Non-constant lower bound in implied-shape" | |
1777 | " declaration at %L", &lower->where); | |
524af0d6 | 1778 | return false; |
f5ca06e6 | 1779 | } |
f5ca06e6 DK |
1780 | } |
1781 | ||
1782 | sym->as->type = AS_EXPLICIT; | |
1783 | } | |
1784 | ||
a8b3b0b6 CR |
1785 | /* Need to check if the expression we initialized this |
1786 | to was one of the iso_c_binding named constants. If so, | |
1787 | and we're a parameter (constant), let it be iso_c. | |
1788 | For example: | |
1789 | integer(c_int), parameter :: my_int = c_int | |
1790 | integer(my_int) :: my_int_2 | |
1791 | If we mark my_int as iso_c (since we can see it's value | |
1792 | is equal to one of the named constants), then my_int_2 | |
1793 | will be considered C interoperable. */ | |
f6288c24 | 1794 | if (sym->ts.type != BT_CHARACTER && !gfc_bt_struct (sym->ts.type)) |
a8b3b0b6 CR |
1795 | { |
1796 | sym->ts.is_iso_c |= init->ts.is_iso_c; | |
1797 | sym->ts.is_c_interop |= init->ts.is_c_interop; | |
1798 | /* attr bits needed for module files. */ | |
1799 | sym->attr.is_iso_c |= init->ts.is_iso_c; | |
1800 | sym->attr.is_c_interop |= init->ts.is_c_interop; | |
1801 | if (init->ts.is_iso_c) | |
1802 | sym->ts.f90_type = init->ts.f90_type; | |
1803 | } | |
b7e75771 | 1804 | |
6de9cd9a DN |
1805 | /* Add initializer. Make sure we keep the ranks sane. */ |
1806 | if (sym->attr.dimension && init->rank == 0) | |
a9b43781 PT |
1807 | { |
1808 | mpz_t size; | |
1809 | gfc_expr *array; | |
a9b43781 PT |
1810 | int n; |
1811 | if (sym->attr.flavor == FL_PARAMETER | |
1812 | && init->expr_type == EXPR_CONSTANT | |
524af0d6 | 1813 | && spec_size (sym->as, &size) |
a9b43781 PT |
1814 | && mpz_cmp_si (size, 0) > 0) |
1815 | { | |
b7e75771 JD |
1816 | array = gfc_get_array_expr (init->ts.type, init->ts.kind, |
1817 | &init->where); | |
a9b43781 | 1818 | for (n = 0; n < (int)mpz_get_si (size); n++) |
b7e75771 JD |
1819 | gfc_constructor_append_expr (&array->value.constructor, |
1820 | n == 0 | |
1821 | ? init | |
1822 | : gfc_copy_expr (init), | |
1823 | &init->where); | |
f5acf0f2 | 1824 | |
a9b43781 PT |
1825 | array->shape = gfc_get_shape (sym->as->rank); |
1826 | for (n = 0; n < sym->as->rank; n++) | |
1827 | spec_dimen_size (sym->as, n, &array->shape[n]); | |
1828 | ||
1829 | init = array; | |
1830 | mpz_clear (size); | |
1831 | } | |
1832 | init->rank = sym->as->rank; | |
1833 | } | |
6de9cd9a DN |
1834 | |
1835 | sym->value = init; | |
ef7236d2 DF |
1836 | if (sym->attr.save == SAVE_NONE) |
1837 | sym->attr.save = SAVE_IMPLICIT; | |
6de9cd9a DN |
1838 | *initp = NULL; |
1839 | } | |
1840 | ||
524af0d6 | 1841 | return true; |
6de9cd9a DN |
1842 | } |
1843 | ||
1844 | ||
1845 | /* Function called by variable_decl() that adds a name to a structure | |
1846 | being built. */ | |
1847 | ||
524af0d6 | 1848 | static bool |
636dff67 SK |
1849 | build_struct (const char *name, gfc_charlen *cl, gfc_expr **init, |
1850 | gfc_array_spec **as) | |
6de9cd9a | 1851 | { |
f6288c24 | 1852 | gfc_state_data *s; |
6de9cd9a DN |
1853 | gfc_component *c; |
1854 | ||
619dd721 | 1855 | /* F03:C438/C439. If the current symbol is of the same derived type that we're |
6de9cd9a | 1856 | constructing, it must have the pointer attribute. */ |
619dd721 | 1857 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
bc21d315 | 1858 | && current_ts.u.derived == gfc_current_block () |
6de9cd9a DN |
1859 | && current_attr.pointer == 0) |
1860 | { | |
bf9f15ee PT |
1861 | if (current_attr.allocatable |
1862 | && !gfc_notify_std(GFC_STD_F2008, "Component at %C " | |
1863 | "must have the POINTER attribute")) | |
1864 | { | |
1865 | return false; | |
1866 | } | |
1867 | else if (current_attr.allocatable == 0) | |
1868 | { | |
9cbf8673 JW |
1869 | gfc_error ("Component at %C must have the POINTER attribute"); |
1870 | return false; | |
1871 | } | |
6de9cd9a | 1872 | } |
9cbf8673 JW |
1873 | |
1874 | /* F03:C437. */ | |
1875 | if (current_ts.type == BT_CLASS | |
1876 | && !(current_attr.pointer || current_attr.allocatable)) | |
1877 | { | |
1878 | gfc_error ("Component %qs with CLASS at %C must be allocatable " | |
1879 | "or pointer", name); | |
1880 | return false; | |
bf9f15ee | 1881 | } |
6de9cd9a | 1882 | |
636dff67 | 1883 | if (gfc_current_block ()->attr.pointer && (*as)->rank != 0) |
6de9cd9a DN |
1884 | { |
1885 | if ((*as)->type != AS_DEFERRED && (*as)->type != AS_EXPLICIT) | |
1886 | { | |
1887 | gfc_error ("Array component of structure at %C must have explicit " | |
1888 | "or deferred shape"); | |
524af0d6 | 1889 | return false; |
6de9cd9a DN |
1890 | } |
1891 | } | |
1892 | ||
f6288c24 FR |
1893 | /* If we are in a nested union/map definition, gfc_add_component will not |
1894 | properly find repeated components because: | |
6442a6f4 | 1895 | (i) gfc_add_component does a flat search, where components of unions |
f6288c24 FR |
1896 | and maps are implicity chained so nested components may conflict. |
1897 | (ii) Unions and maps are not linked as components of their parent | |
1898 | structures until after they are parsed. | |
1899 | For (i) we use gfc_find_component which searches recursively, and for (ii) | |
1900 | we search each block directly from the parse stack until we find the top | |
1901 | level structure. */ | |
1902 | ||
1903 | s = gfc_state_stack; | |
1904 | if (s->state == COMP_UNION || s->state == COMP_MAP) | |
1905 | { | |
1906 | while (s->state == COMP_UNION || gfc_comp_struct (s->state)) | |
1907 | { | |
1908 | c = gfc_find_component (s->sym, name, true, true, NULL); | |
1909 | if (c != NULL) | |
1910 | { | |
1911 | gfc_error_now ("Component '%s' at %C already declared at %L", | |
1912 | name, &c->loc); | |
1913 | return false; | |
1914 | } | |
1915 | /* Break after we've searched the entire chain. */ | |
1916 | if (s->state == COMP_DERIVED || s->state == COMP_STRUCTURE) | |
1917 | break; | |
1918 | s = s->previous; | |
1919 | } | |
1920 | } | |
1921 | ||
524af0d6 JB |
1922 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
1923 | return false; | |
6de9cd9a DN |
1924 | |
1925 | c->ts = current_ts; | |
bc21d315 JW |
1926 | if (c->ts.type == BT_CHARACTER) |
1927 | c->ts.u.cl = cl; | |
d4b7d0f0 | 1928 | c->attr = current_attr; |
6de9cd9a DN |
1929 | |
1930 | c->initializer = *init; | |
1931 | *init = NULL; | |
1932 | ||
1933 | c->as = *as; | |
1934 | if (c->as != NULL) | |
be59db2d TB |
1935 | { |
1936 | if (c->as->corank) | |
1937 | c->attr.codimension = 1; | |
1938 | if (c->as->rank) | |
1939 | c->attr.dimension = 1; | |
1940 | } | |
6de9cd9a DN |
1941 | *as = NULL; |
1942 | ||
7fc61626 | 1943 | gfc_apply_init (&c->ts, &c->attr, c->initializer); |
28d08315 | 1944 | |
6de9cd9a | 1945 | /* Check array components. */ |
d4b7d0f0 | 1946 | if (!c->attr.dimension) |
2e23972e | 1947 | goto scalar; |
6de9cd9a | 1948 | |
d4b7d0f0 | 1949 | if (c->attr.pointer) |
6de9cd9a DN |
1950 | { |
1951 | if (c->as->type != AS_DEFERRED) | |
1952 | { | |
5046aff5 PT |
1953 | gfc_error ("Pointer array component of structure at %C must have a " |
1954 | "deferred shape"); | |
a4f15a7d | 1955 | return false; |
5046aff5 PT |
1956 | } |
1957 | } | |
d4b7d0f0 | 1958 | else if (c->attr.allocatable) |
5046aff5 PT |
1959 | { |
1960 | if (c->as->type != AS_DEFERRED) | |
1961 | { | |
1962 | gfc_error ("Allocatable component of structure at %C must have a " | |
1963 | "deferred shape"); | |
a4f15a7d | 1964 | return false; |
6de9cd9a DN |
1965 | } |
1966 | } | |
1967 | else | |
1968 | { | |
1969 | if (c->as->type != AS_EXPLICIT) | |
1970 | { | |
636dff67 SK |
1971 | gfc_error ("Array component of structure at %C must have an " |
1972 | "explicit shape"); | |
a4f15a7d | 1973 | return false; |
6de9cd9a DN |
1974 | } |
1975 | } | |
1976 | ||
2e23972e JW |
1977 | scalar: |
1978 | if (c->ts.type == BT_CLASS) | |
a4f15a7d | 1979 | return gfc_build_class_symbol (&c->ts, &c->attr, &c->as); |
ea59b186 | 1980 | |
a4f15a7d | 1981 | return true; |
6de9cd9a DN |
1982 | } |
1983 | ||
1984 | ||
1985 | /* Match a 'NULL()', and possibly take care of some side effects. */ | |
1986 | ||
1987 | match | |
636dff67 | 1988 | gfc_match_null (gfc_expr **result) |
6de9cd9a DN |
1989 | { |
1990 | gfc_symbol *sym; | |
576f6da6 | 1991 | match m, m2 = MATCH_NO; |
6de9cd9a | 1992 | |
576f6da6 TB |
1993 | if ((m = gfc_match (" null ( )")) == MATCH_ERROR) |
1994 | return MATCH_ERROR; | |
1995 | ||
1996 | if (m == MATCH_NO) | |
1997 | { | |
1998 | locus old_loc; | |
1999 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
2000 | ||
94241120 | 2001 | if ((m2 = gfc_match (" null (")) != MATCH_YES) |
576f6da6 TB |
2002 | return m2; |
2003 | ||
2004 | old_loc = gfc_current_locus; | |
2005 | if ((m2 = gfc_match (" %n ) ", name)) == MATCH_ERROR) | |
2006 | return MATCH_ERROR; | |
2007 | if (m2 != MATCH_YES | |
2008 | && ((m2 = gfc_match (" mold = %n )", name)) == MATCH_ERROR)) | |
2009 | return MATCH_ERROR; | |
2010 | if (m2 == MATCH_NO) | |
2011 | { | |
2012 | gfc_current_locus = old_loc; | |
2013 | return MATCH_NO; | |
2014 | } | |
2015 | } | |
6de9cd9a DN |
2016 | |
2017 | /* The NULL symbol now has to be/become an intrinsic function. */ | |
2018 | if (gfc_get_symbol ("null", NULL, &sym)) | |
2019 | { | |
2020 | gfc_error ("NULL() initialization at %C is ambiguous"); | |
2021 | return MATCH_ERROR; | |
2022 | } | |
2023 | ||
2024 | gfc_intrinsic_symbol (sym); | |
2025 | ||
2026 | if (sym->attr.proc != PROC_INTRINSIC | |
07416986 | 2027 | && !(sym->attr.use_assoc && sym->attr.intrinsic) |
524af0d6 JB |
2028 | && (!gfc_add_procedure(&sym->attr, PROC_INTRINSIC, sym->name, NULL) |
2029 | || !gfc_add_function (&sym->attr, sym->name, NULL))) | |
6de9cd9a DN |
2030 | return MATCH_ERROR; |
2031 | ||
b7e75771 | 2032 | *result = gfc_get_null_expr (&gfc_current_locus); |
6de9cd9a | 2033 | |
576f6da6 TB |
2034 | /* Invalid per F2008, C512. */ |
2035 | if (m2 == MATCH_YES) | |
2036 | { | |
2037 | gfc_error ("NULL() initialization at %C may not have MOLD"); | |
2038 | return MATCH_ERROR; | |
2039 | } | |
2040 | ||
6de9cd9a DN |
2041 | return MATCH_YES; |
2042 | } | |
2043 | ||
2044 | ||
80f95228 JW |
2045 | /* Match the initialization expr for a data pointer or procedure pointer. */ |
2046 | ||
2047 | static match | |
2048 | match_pointer_init (gfc_expr **init, int procptr) | |
2049 | { | |
2050 | match m; | |
2051 | ||
f6288c24 | 2052 | if (gfc_pure (NULL) && !gfc_comp_struct (gfc_state_stack->state)) |
80f95228 JW |
2053 | { |
2054 | gfc_error ("Initialization of pointer at %C is not allowed in " | |
2055 | "a PURE procedure"); | |
2056 | return MATCH_ERROR; | |
2057 | } | |
ccd7751b | 2058 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
80f95228 | 2059 | |
eea58adb | 2060 | /* Match NULL() initialization. */ |
80f95228 JW |
2061 | m = gfc_match_null (init); |
2062 | if (m != MATCH_NO) | |
2063 | return m; | |
2064 | ||
2065 | /* Match non-NULL initialization. */ | |
837c4b78 | 2066 | gfc_matching_ptr_assignment = !procptr; |
80f95228 JW |
2067 | gfc_matching_procptr_assignment = procptr; |
2068 | m = gfc_match_rvalue (init); | |
837c4b78 | 2069 | gfc_matching_ptr_assignment = 0; |
80f95228 JW |
2070 | gfc_matching_procptr_assignment = 0; |
2071 | if (m == MATCH_ERROR) | |
2072 | return MATCH_ERROR; | |
2073 | else if (m == MATCH_NO) | |
2074 | { | |
2075 | gfc_error ("Error in pointer initialization at %C"); | |
2076 | return MATCH_ERROR; | |
2077 | } | |
2078 | ||
dc9a54fa JW |
2079 | if (!procptr && !gfc_resolve_expr (*init)) |
2080 | return MATCH_ERROR; | |
f5acf0f2 | 2081 | |
524af0d6 JB |
2082 | if (!gfc_notify_std (GFC_STD_F2008, "non-NULL pointer " |
2083 | "initialization at %C")) | |
80f95228 JW |
2084 | return MATCH_ERROR; |
2085 | ||
2086 | return MATCH_YES; | |
2087 | } | |
2088 | ||
2089 | ||
524af0d6 | 2090 | static bool |
bb9de0c4 JW |
2091 | check_function_name (char *name) |
2092 | { | |
2093 | /* In functions that have a RESULT variable defined, the function name always | |
2094 | refers to function calls. Therefore, the name is not allowed to appear in | |
2095 | specification statements. When checking this, be careful about | |
2096 | 'hidden' procedure pointer results ('ppr@'). */ | |
2097 | ||
2098 | if (gfc_current_state () == COMP_FUNCTION) | |
2099 | { | |
2100 | gfc_symbol *block = gfc_current_block (); | |
2101 | if (block && block->result && block->result != block | |
2102 | && strcmp (block->result->name, "ppr@") != 0 | |
2103 | && strcmp (block->name, name) == 0) | |
2104 | { | |
c4100eae | 2105 | gfc_error ("Function name %qs not allowed at %C", name); |
524af0d6 | 2106 | return false; |
bb9de0c4 JW |
2107 | } |
2108 | } | |
2109 | ||
524af0d6 | 2110 | return true; |
bb9de0c4 JW |
2111 | } |
2112 | ||
2113 | ||
6de9cd9a DN |
2114 | /* Match a variable name with an optional initializer. When this |
2115 | subroutine is called, a variable is expected to be parsed next. | |
2116 | Depending on what is happening at the moment, updates either the | |
2117 | symbol table or the current interface. */ | |
2118 | ||
2119 | static match | |
949d5b72 | 2120 | variable_decl (int elem) |
6de9cd9a DN |
2121 | { |
2122 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
2123 | gfc_expr *initializer, *char_len; | |
2124 | gfc_array_spec *as; | |
83d890b9 | 2125 | gfc_array_spec *cp_as; /* Extra copy for Cray Pointees. */ |
6de9cd9a | 2126 | gfc_charlen *cl; |
e69afb29 | 2127 | bool cl_deferred; |
6de9cd9a DN |
2128 | locus var_locus; |
2129 | match m; | |
524af0d6 | 2130 | bool t; |
83d890b9 | 2131 | gfc_symbol *sym; |
6de9cd9a DN |
2132 | |
2133 | initializer = NULL; | |
2134 | as = NULL; | |
83d890b9 | 2135 | cp_as = NULL; |
6de9cd9a DN |
2136 | |
2137 | /* When we get here, we've just matched a list of attributes and | |
2138 | maybe a type and a double colon. The next thing we expect to see | |
2139 | is the name of the symbol. */ | |
2140 | m = gfc_match_name (name); | |
2141 | if (m != MATCH_YES) | |
2142 | goto cleanup; | |
2143 | ||
63645982 | 2144 | var_locus = gfc_current_locus; |
6de9cd9a DN |
2145 | |
2146 | /* Now we could see the optional array spec. or character length. */ | |
be59db2d | 2147 | m = gfc_match_array_spec (&as, true, true); |
11126dc0 | 2148 | if (m == MATCH_ERROR) |
6de9cd9a | 2149 | goto cleanup; |
25d8f0a2 | 2150 | |
6de9cd9a DN |
2151 | if (m == MATCH_NO) |
2152 | as = gfc_copy_array_spec (current_as); | |
63fbf586 | 2153 | else if (current_as |
524af0d6 | 2154 | && !merge_array_spec (current_as, as, true)) |
63fbf586 TB |
2155 | { |
2156 | m = MATCH_ERROR; | |
2157 | goto cleanup; | |
2158 | } | |
6de9cd9a | 2159 | |
c61819ff | 2160 | if (flag_cray_pointer) |
11126dc0 AL |
2161 | cp_as = gfc_copy_array_spec (as); |
2162 | ||
f5ca06e6 DK |
2163 | /* At this point, we know for sure if the symbol is PARAMETER and can thus |
2164 | determine (and check) whether it can be implied-shape. If it | |
2165 | was parsed as assumed-size, change it because PARAMETERs can not | |
2166 | be assumed-size. */ | |
2167 | if (as) | |
2168 | { | |
2169 | if (as->type == AS_IMPLIED_SHAPE && current_attr.flavor != FL_PARAMETER) | |
2170 | { | |
2171 | m = MATCH_ERROR; | |
c4100eae | 2172 | gfc_error ("Non-PARAMETER symbol %qs at %L can't be implied-shape", |
f5ca06e6 DK |
2173 | name, &var_locus); |
2174 | goto cleanup; | |
2175 | } | |
2176 | ||
2177 | if (as->type == AS_ASSUMED_SIZE && as->rank == 1 | |
2178 | && current_attr.flavor == FL_PARAMETER) | |
2179 | as->type = AS_IMPLIED_SHAPE; | |
2180 | ||
2181 | if (as->type == AS_IMPLIED_SHAPE | |
70112e2a | 2182 | && !gfc_notify_std (GFC_STD_F2008, "Implied-shape array at %L", |
524af0d6 | 2183 | &var_locus)) |
f5ca06e6 DK |
2184 | { |
2185 | m = MATCH_ERROR; | |
2186 | goto cleanup; | |
2187 | } | |
2188 | } | |
2189 | ||
6de9cd9a DN |
2190 | char_len = NULL; |
2191 | cl = NULL; | |
e69afb29 | 2192 | cl_deferred = false; |
6de9cd9a DN |
2193 | |
2194 | if (current_ts.type == BT_CHARACTER) | |
2195 | { | |
2767f2cc | 2196 | switch (match_char_length (&char_len, &cl_deferred, false)) |
6de9cd9a DN |
2197 | { |
2198 | case MATCH_YES: | |
b76e28c6 | 2199 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
2200 | |
2201 | cl->length = char_len; | |
2202 | break; | |
2203 | ||
949d5b72 | 2204 | /* Non-constant lengths need to be copied after the first |
9b21a380 | 2205 | element. Also copy assumed lengths. */ |
6de9cd9a | 2206 | case MATCH_NO: |
9b21a380 | 2207 | if (elem > 1 |
bc21d315 JW |
2208 | && (current_ts.u.cl->length == NULL |
2209 | || current_ts.u.cl->length->expr_type != EXPR_CONSTANT)) | |
949d5b72 | 2210 | { |
b76e28c6 | 2211 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
bc21d315 | 2212 | cl->length = gfc_copy_expr (current_ts.u.cl->length); |
949d5b72 PT |
2213 | } |
2214 | else | |
bc21d315 | 2215 | cl = current_ts.u.cl; |
949d5b72 | 2216 | |
e69afb29 SK |
2217 | cl_deferred = current_ts.deferred; |
2218 | ||
6de9cd9a DN |
2219 | break; |
2220 | ||
2221 | case MATCH_ERROR: | |
2222 | goto cleanup; | |
2223 | } | |
2224 | } | |
2225 | ||
4668d6f9 PT |
2226 | /* The dummy arguments and result of the abreviated form of MODULE |
2227 | PROCEDUREs, used in SUBMODULES should not be redefined. */ | |
2228 | if (gfc_current_ns->proc_name | |
2229 | && gfc_current_ns->proc_name->abr_modproc_decl) | |
2230 | { | |
2231 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2232 | if (sym != NULL && (sym->attr.dummy || sym->attr.result)) | |
2233 | { | |
2234 | m = MATCH_ERROR; | |
811582ec | 2235 | gfc_error ("%qs at %C is a redefinition of the declaration " |
4668d6f9 | 2236 | "in the corresponding interface for MODULE " |
811582ec | 2237 | "PROCEDURE %qs", sym->name, |
4668d6f9 PT |
2238 | gfc_current_ns->proc_name->name); |
2239 | goto cleanup; | |
2240 | } | |
2241 | } | |
2242 | ||
83d890b9 | 2243 | /* If this symbol has already shown up in a Cray Pointer declaration, |
88f7d6fb | 2244 | and this is not a component declaration, |
66e4ab31 | 2245 | then we want to set the type & bail out. */ |
f6288c24 | 2246 | if (flag_cray_pointer && !gfc_comp_struct (gfc_current_state ())) |
83d890b9 AL |
2247 | { |
2248 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2249 | if (sym != NULL && sym->attr.cray_pointee) | |
2250 | { | |
2251 | sym->ts.type = current_ts.type; | |
2252 | sym->ts.kind = current_ts.kind; | |
bc21d315 JW |
2253 | sym->ts.u.cl = cl; |
2254 | sym->ts.u.derived = current_ts.u.derived; | |
a8b3b0b6 CR |
2255 | sym->ts.is_c_interop = current_ts.is_c_interop; |
2256 | sym->ts.is_iso_c = current_ts.is_iso_c; | |
83d890b9 | 2257 | m = MATCH_YES; |
f5acf0f2 | 2258 | |
83d890b9 AL |
2259 | /* Check to see if we have an array specification. */ |
2260 | if (cp_as != NULL) | |
2261 | { | |
2262 | if (sym->as != NULL) | |
2263 | { | |
e25a0da3 | 2264 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
2265 | gfc_free_array_spec (cp_as); |
2266 | m = MATCH_ERROR; | |
2267 | goto cleanup; | |
2268 | } | |
2269 | else | |
2270 | { | |
524af0d6 | 2271 | if (!gfc_set_array_spec (sym, cp_as, &var_locus)) |
83d890b9 | 2272 | gfc_internal_error ("Couldn't set pointee array spec."); |
d51347f9 | 2273 | |
83d890b9 | 2274 | /* Fix the array spec. */ |
d51347f9 | 2275 | m = gfc_mod_pointee_as (sym->as); |
83d890b9 AL |
2276 | if (m == MATCH_ERROR) |
2277 | goto cleanup; | |
2278 | } | |
d51347f9 | 2279 | } |
83d890b9 AL |
2280 | goto cleanup; |
2281 | } | |
2282 | else | |
2283 | { | |
2284 | gfc_free_array_spec (cp_as); | |
2285 | } | |
2286 | } | |
d51347f9 | 2287 | |
3070bab4 JW |
2288 | /* Procedure pointer as function result. */ |
2289 | if (gfc_current_state () == COMP_FUNCTION | |
2290 | && strcmp ("ppr@", gfc_current_block ()->name) == 0 | |
2291 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) == 0) | |
2292 | strcpy (name, "ppr@"); | |
2293 | ||
2294 | if (gfc_current_state () == COMP_FUNCTION | |
2295 | && strcmp (name, gfc_current_block ()->name) == 0 | |
2296 | && gfc_current_block ()->result | |
2297 | && strcmp ("ppr@", gfc_current_block ()->result->name) == 0) | |
2298 | strcpy (name, "ppr@"); | |
d51347f9 | 2299 | |
6de9cd9a DN |
2300 | /* OK, we've successfully matched the declaration. Now put the |
2301 | symbol in the current namespace, because it might be used in the | |
69de3b83 | 2302 | optional initialization expression for this symbol, e.g. this is |
6de9cd9a DN |
2303 | perfectly legal: |
2304 | ||
2305 | integer, parameter :: i = huge(i) | |
2306 | ||
2307 | This is only true for parameters or variables of a basic type. | |
2308 | For components of derived types, it is not true, so we don't | |
2309 | create a symbol for those yet. If we fail to create the symbol, | |
2310 | bail out. */ | |
f6288c24 | 2311 | if (!gfc_comp_struct (gfc_current_state ()) |
524af0d6 | 2312 | && !build_sym (name, cl, cl_deferred, &as, &var_locus)) |
6de9cd9a | 2313 | { |
72af9f0b PT |
2314 | m = MATCH_ERROR; |
2315 | goto cleanup; | |
2316 | } | |
2317 | ||
524af0d6 | 2318 | if (!check_function_name (name)) |
6de9cd9a | 2319 | { |
6de9cd9a DN |
2320 | m = MATCH_ERROR; |
2321 | goto cleanup; | |
2322 | } | |
2323 | ||
294fbfc8 TS |
2324 | /* We allow old-style initializations of the form |
2325 | integer i /2/, j(4) /3*3, 1/ | |
2326 | (if no colon has been seen). These are different from data | |
2327 | statements in that initializers are only allowed to apply to the | |
2328 | variable immediately preceding, i.e. | |
2329 | integer i, j /1, 2/ | |
2330 | is not allowed. Therefore we have to do some work manually, that | |
75d17889 | 2331 | could otherwise be left to the matchers for DATA statements. */ |
294fbfc8 TS |
2332 | |
2333 | if (!colon_seen && gfc_match (" /") == MATCH_YES) | |
2334 | { | |
524af0d6 JB |
2335 | if (!gfc_notify_std (GFC_STD_GNU, "Old-style " |
2336 | "initialization at %C")) | |
294fbfc8 | 2337 | return MATCH_ERROR; |
f6288c24 FR |
2338 | |
2339 | /* Allow old style initializations for components of STRUCTUREs and MAPs | |
2340 | but not components of derived types. */ | |
b18f1efc JJ |
2341 | else if (gfc_current_state () == COMP_DERIVED) |
2342 | { | |
2343 | gfc_error ("Invalid old style initialization for derived type " | |
2344 | "component at %C"); | |
2345 | m = MATCH_ERROR; | |
2346 | goto cleanup; | |
2347 | } | |
f5acf0f2 | 2348 | |
f6288c24 FR |
2349 | /* For structure components, read the initializer as a special |
2350 | expression and let the rest of this function apply the initializer | |
2351 | as usual. */ | |
2352 | else if (gfc_comp_struct (gfc_current_state ())) | |
2353 | { | |
2354 | m = match_clist_expr (&initializer, ¤t_ts, as); | |
2355 | if (m == MATCH_NO) | |
2356 | gfc_error ("Syntax error in old style initialization of %s at %C", | |
2357 | name); | |
2358 | if (m != MATCH_YES) | |
2359 | goto cleanup; | |
2360 | } | |
2361 | ||
2362 | /* Otherwise we treat the old style initialization just like a | |
2363 | DATA declaration for the current variable. */ | |
2364 | else | |
2365 | return match_old_style_init (name); | |
294fbfc8 TS |
2366 | } |
2367 | ||
6de9cd9a DN |
2368 | /* The double colon must be present in order to have initializers. |
2369 | Otherwise the statement is ambiguous with an assignment statement. */ | |
2370 | if (colon_seen) | |
2371 | { | |
2372 | if (gfc_match (" =>") == MATCH_YES) | |
2373 | { | |
6de9cd9a DN |
2374 | if (!current_attr.pointer) |
2375 | { | |
2376 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
2377 | m = MATCH_ERROR; | |
2378 | goto cleanup; | |
2379 | } | |
2380 | ||
80f95228 | 2381 | m = match_pointer_init (&initializer, 0); |
6de9cd9a DN |
2382 | if (m != MATCH_YES) |
2383 | goto cleanup; | |
6de9cd9a DN |
2384 | } |
2385 | else if (gfc_match_char ('=') == MATCH_YES) | |
2386 | { | |
2387 | if (current_attr.pointer) | |
2388 | { | |
a4d9b221 TB |
2389 | gfc_error ("Pointer initialization at %C requires %<=>%>, " |
2390 | "not %<=%>"); | |
6de9cd9a DN |
2391 | m = MATCH_ERROR; |
2392 | goto cleanup; | |
2393 | } | |
2394 | ||
2395 | m = gfc_match_init_expr (&initializer); | |
2396 | if (m == MATCH_NO) | |
2397 | { | |
2398 | gfc_error ("Expected an initialization expression at %C"); | |
2399 | m = MATCH_ERROR; | |
2400 | } | |
2401 | ||
ade20620 | 2402 | if (current_attr.flavor != FL_PARAMETER && gfc_pure (NULL) |
f6288c24 | 2403 | && !gfc_comp_struct (gfc_state_stack->state)) |
6de9cd9a | 2404 | { |
636dff67 SK |
2405 | gfc_error ("Initialization of variable at %C is not allowed in " |
2406 | "a PURE procedure"); | |
6de9cd9a DN |
2407 | m = MATCH_ERROR; |
2408 | } | |
2409 | ||
ccd7751b | 2410 | if (current_attr.flavor != FL_PARAMETER |
f6288c24 | 2411 | && !gfc_comp_struct (gfc_state_stack->state)) |
ccd7751b TB |
2412 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
2413 | ||
6de9cd9a DN |
2414 | if (m != MATCH_YES) |
2415 | goto cleanup; | |
2416 | } | |
cb44ab82 VL |
2417 | } |
2418 | ||
5046aff5 | 2419 | if (initializer != NULL && current_attr.allocatable |
f6288c24 | 2420 | && gfc_comp_struct (gfc_current_state ())) |
5046aff5 | 2421 | { |
636dff67 SK |
2422 | gfc_error ("Initialization of allocatable component at %C is not " |
2423 | "allowed"); | |
5046aff5 PT |
2424 | m = MATCH_ERROR; |
2425 | goto cleanup; | |
2426 | } | |
2427 | ||
54b4ba60 | 2428 | /* Add the initializer. Note that it is fine if initializer is |
6de9cd9a DN |
2429 | NULL here, because we sometimes also need to check if a |
2430 | declaration *must* have an initialization expression. */ | |
f6288c24 | 2431 | if (!gfc_comp_struct (gfc_current_state ())) |
6de9cd9a DN |
2432 | t = add_init_expr_to_sym (name, &initializer, &var_locus); |
2433 | else | |
54b4ba60 | 2434 | { |
5046aff5 | 2435 | if (current_ts.type == BT_DERIVED |
636dff67 | 2436 | && !current_attr.pointer && !initializer) |
54b4ba60 PB |
2437 | initializer = gfc_default_initializer (¤t_ts); |
2438 | t = build_struct (name, cl, &initializer, &as); | |
f6288c24 FR |
2439 | |
2440 | /* If we match a nested structure definition we expect to see the | |
2441 | * body even if the variable declarations blow up, so we need to keep | |
2442 | * the structure declaration around. */ | |
2443 | if (gfc_new_block && gfc_new_block->attr.flavor == FL_STRUCT) | |
2444 | gfc_commit_symbol (gfc_new_block); | |
54b4ba60 | 2445 | } |
6de9cd9a | 2446 | |
524af0d6 | 2447 | m = (t) ? MATCH_YES : MATCH_ERROR; |
6de9cd9a DN |
2448 | |
2449 | cleanup: | |
2450 | /* Free stuff up and return. */ | |
2451 | gfc_free_expr (initializer); | |
2452 | gfc_free_array_spec (as); | |
2453 | ||
2454 | return m; | |
2455 | } | |
2456 | ||
2457 | ||
b2b81a3f BM |
2458 | /* Match an extended-f77 "TYPESPEC*bytesize"-style kind specification. |
2459 | This assumes that the byte size is equal to the kind number for | |
2460 | non-COMPLEX types, and equal to twice the kind number for COMPLEX. */ | |
6de9cd9a DN |
2461 | |
2462 | match | |
636dff67 | 2463 | gfc_match_old_kind_spec (gfc_typespec *ts) |
6de9cd9a DN |
2464 | { |
2465 | match m; | |
5cf54585 | 2466 | int original_kind; |
6de9cd9a DN |
2467 | |
2468 | if (gfc_match_char ('*') != MATCH_YES) | |
2469 | return MATCH_NO; | |
2470 | ||
5cf54585 | 2471 | m = gfc_match_small_literal_int (&ts->kind, NULL); |
6de9cd9a DN |
2472 | if (m != MATCH_YES) |
2473 | return MATCH_ERROR; | |
2474 | ||
e45b3c75 ES |
2475 | original_kind = ts->kind; |
2476 | ||
6de9cd9a | 2477 | /* Massage the kind numbers for complex types. */ |
e45b3c75 ES |
2478 | if (ts->type == BT_COMPLEX) |
2479 | { | |
2480 | if (ts->kind % 2) | |
636dff67 SK |
2481 | { |
2482 | gfc_error ("Old-style type declaration %s*%d not supported at %C", | |
2483 | gfc_basic_typename (ts->type), original_kind); | |
2484 | return MATCH_ERROR; | |
2485 | } | |
e45b3c75 | 2486 | ts->kind /= 2; |
f4347334 ZG |
2487 | |
2488 | } | |
2489 | ||
203c7ebf | 2490 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
f4347334 ZG |
2491 | ts->kind = 8; |
2492 | ||
2493 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2494 | { | |
2495 | if (ts->kind == 4) | |
2496 | { | |
203c7ebf | 2497 | if (flag_real4_kind == 8) |
f4347334 | 2498 | ts->kind = 8; |
203c7ebf | 2499 | if (flag_real4_kind == 10) |
f4347334 | 2500 | ts->kind = 10; |
203c7ebf | 2501 | if (flag_real4_kind == 16) |
f4347334 ZG |
2502 | ts->kind = 16; |
2503 | } | |
2504 | ||
2505 | if (ts->kind == 8) | |
2506 | { | |
203c7ebf | 2507 | if (flag_real8_kind == 4) |
f4347334 | 2508 | ts->kind = 4; |
203c7ebf | 2509 | if (flag_real8_kind == 10) |
f4347334 | 2510 | ts->kind = 10; |
203c7ebf | 2511 | if (flag_real8_kind == 16) |
f4347334 ZG |
2512 | ts->kind = 16; |
2513 | } | |
e45b3c75 | 2514 | } |
6de9cd9a | 2515 | |
e7a2d5fb | 2516 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a | 2517 | { |
e45b3c75 | 2518 | gfc_error ("Old-style type declaration %s*%d not supported at %C", |
636dff67 | 2519 | gfc_basic_typename (ts->type), original_kind); |
6de9cd9a DN |
2520 | return MATCH_ERROR; |
2521 | } | |
2522 | ||
70112e2a PT |
2523 | if (!gfc_notify_std (GFC_STD_GNU, |
2524 | "Nonstandard type declaration %s*%d at %C", | |
524af0d6 | 2525 | gfc_basic_typename(ts->type), original_kind)) |
df8652dc SK |
2526 | return MATCH_ERROR; |
2527 | ||
6de9cd9a DN |
2528 | return MATCH_YES; |
2529 | } | |
2530 | ||
2531 | ||
2532 | /* Match a kind specification. Since kinds are generally optional, we | |
2533 | usually return MATCH_NO if something goes wrong. If a "kind=" | |
2534 | string is found, then we know we have an error. */ | |
2535 | ||
2536 | match | |
e2d29968 | 2537 | gfc_match_kind_spec (gfc_typespec *ts, bool kind_expr_only) |
6de9cd9a | 2538 | { |
e2d29968 | 2539 | locus where, loc; |
6de9cd9a DN |
2540 | gfc_expr *e; |
2541 | match m, n; | |
96ee3a4a | 2542 | char c; |
6de9cd9a DN |
2543 | |
2544 | m = MATCH_NO; | |
e2d29968 | 2545 | n = MATCH_YES; |
6de9cd9a DN |
2546 | e = NULL; |
2547 | ||
e2d29968 PT |
2548 | where = loc = gfc_current_locus; |
2549 | ||
2550 | if (kind_expr_only) | |
2551 | goto kind_expr; | |
6de9cd9a DN |
2552 | |
2553 | if (gfc_match_char ('(') == MATCH_NO) | |
2554 | return MATCH_NO; | |
2555 | ||
2556 | /* Also gobbles optional text. */ | |
2557 | if (gfc_match (" kind = ") == MATCH_YES) | |
2558 | m = MATCH_ERROR; | |
2559 | ||
e2d29968 PT |
2560 | loc = gfc_current_locus; |
2561 | ||
2562 | kind_expr: | |
6de9cd9a | 2563 | n = gfc_match_init_expr (&e); |
e2d29968 | 2564 | |
6de9cd9a | 2565 | if (n != MATCH_YES) |
e2d29968 | 2566 | { |
1c8bcdf7 | 2567 | if (gfc_matching_function) |
e2d29968 | 2568 | { |
f5acf0f2 | 2569 | /* The function kind expression might include use associated or |
1c8bcdf7 PT |
2570 | imported parameters and try again after the specification |
2571 | expressions..... */ | |
e2d29968 PT |
2572 | if (gfc_match_char (')') != MATCH_YES) |
2573 | { | |
2574 | gfc_error ("Missing right parenthesis at %C"); | |
2575 | m = MATCH_ERROR; | |
2576 | goto no_match; | |
2577 | } | |
2578 | ||
2579 | gfc_free_expr (e); | |
e2d29968 PT |
2580 | gfc_undo_symbols (); |
2581 | return MATCH_YES; | |
2582 | } | |
2583 | else | |
2584 | { | |
2585 | /* ....or else, the match is real. */ | |
2586 | if (n == MATCH_NO) | |
2587 | gfc_error ("Expected initialization expression at %C"); | |
2588 | if (n != MATCH_YES) | |
2589 | return MATCH_ERROR; | |
2590 | } | |
2591 | } | |
6de9cd9a DN |
2592 | |
2593 | if (e->rank != 0) | |
2594 | { | |
2595 | gfc_error ("Expected scalar initialization expression at %C"); | |
2596 | m = MATCH_ERROR; | |
2597 | goto no_match; | |
2598 | } | |
2599 | ||
51f03c6b | 2600 | if (gfc_extract_int (e, &ts->kind, 1)) |
6de9cd9a | 2601 | { |
6de9cd9a DN |
2602 | m = MATCH_ERROR; |
2603 | goto no_match; | |
2604 | } | |
2605 | ||
a8b3b0b6 CR |
2606 | /* Before throwing away the expression, let's see if we had a |
2607 | C interoperable kind (and store the fact). */ | |
2608 | if (e->ts.is_c_interop == 1) | |
2609 | { | |
eea58adb | 2610 | /* Mark this as C interoperable if being declared with one |
a8b3b0b6 CR |
2611 | of the named constants from iso_c_binding. */ |
2612 | ts->is_c_interop = e->ts.is_iso_c; | |
2613 | ts->f90_type = e->ts.f90_type; | |
2614 | } | |
f5acf0f2 | 2615 | |
6de9cd9a DN |
2616 | gfc_free_expr (e); |
2617 | e = NULL; | |
2618 | ||
a8b3b0b6 CR |
2619 | /* Ignore errors to this point, if we've gotten here. This means |
2620 | we ignore the m=MATCH_ERROR from above. */ | |
e7a2d5fb | 2621 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a DN |
2622 | { |
2623 | gfc_error ("Kind %d not supported for type %s at %C", ts->kind, | |
2624 | gfc_basic_typename (ts->type)); | |
96ee3a4a TB |
2625 | gfc_current_locus = where; |
2626 | return MATCH_ERROR; | |
6de9cd9a | 2627 | } |
96ee3a4a | 2628 | |
2ec855f1 TB |
2629 | /* Warn if, e.g., c_int is used for a REAL variable, but not |
2630 | if, e.g., c_double is used for COMPLEX as the standard | |
2631 | explicitly says that the kind type parameter for complex and real | |
2632 | variable is the same, i.e. c_float == c_float_complex. */ | |
2633 | if (ts->f90_type != BT_UNKNOWN && ts->f90_type != ts->type | |
2634 | && !((ts->f90_type == BT_REAL && ts->type == BT_COMPLEX) | |
2635 | || (ts->f90_type == BT_COMPLEX && ts->type == BT_REAL))) | |
db30e21c | 2636 | gfc_warning_now (0, "C kind type parameter is for type %s but type at %L " |
2be51762 TB |
2637 | "is %s", gfc_basic_typename (ts->f90_type), &where, |
2638 | gfc_basic_typename (ts->type)); | |
2ec855f1 | 2639 | |
96ee3a4a | 2640 | gfc_gobble_whitespace (); |
8fc541d3 FXC |
2641 | if ((c = gfc_next_ascii_char ()) != ')' |
2642 | && (ts->type != BT_CHARACTER || c != ',')) | |
6de9cd9a | 2643 | { |
96ee3a4a TB |
2644 | if (ts->type == BT_CHARACTER) |
2645 | gfc_error ("Missing right parenthesis or comma at %C"); | |
2646 | else | |
2647 | gfc_error ("Missing right parenthesis at %C"); | |
e2d29968 | 2648 | m = MATCH_ERROR; |
6de9cd9a | 2649 | } |
a8b3b0b6 CR |
2650 | else |
2651 | /* All tests passed. */ | |
2652 | m = MATCH_YES; | |
6de9cd9a | 2653 | |
a8b3b0b6 CR |
2654 | if(m == MATCH_ERROR) |
2655 | gfc_current_locus = where; | |
f4347334 | 2656 | |
203c7ebf | 2657 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
f4347334 ZG |
2658 | ts->kind = 8; |
2659 | ||
2660 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2661 | { | |
2662 | if (ts->kind == 4) | |
2663 | { | |
203c7ebf | 2664 | if (flag_real4_kind == 8) |
f4347334 | 2665 | ts->kind = 8; |
203c7ebf | 2666 | if (flag_real4_kind == 10) |
f4347334 | 2667 | ts->kind = 10; |
203c7ebf | 2668 | if (flag_real4_kind == 16) |
f4347334 ZG |
2669 | ts->kind = 16; |
2670 | } | |
2671 | ||
2672 | if (ts->kind == 8) | |
2673 | { | |
203c7ebf | 2674 | if (flag_real8_kind == 4) |
f4347334 | 2675 | ts->kind = 4; |
203c7ebf | 2676 | if (flag_real8_kind == 10) |
f4347334 | 2677 | ts->kind = 10; |
203c7ebf | 2678 | if (flag_real8_kind == 16) |
f4347334 ZG |
2679 | ts->kind = 16; |
2680 | } | |
2681 | } | |
2682 | ||
a8b3b0b6 CR |
2683 | /* Return what we know from the test(s). */ |
2684 | return m; | |
6de9cd9a DN |
2685 | |
2686 | no_match: | |
2687 | gfc_free_expr (e); | |
63645982 | 2688 | gfc_current_locus = where; |
6de9cd9a DN |
2689 | return m; |
2690 | } | |
2691 | ||
2692 | ||
187de1ed FXC |
2693 | static match |
2694 | match_char_kind (int * kind, int * is_iso_c) | |
2695 | { | |
2696 | locus where; | |
2697 | gfc_expr *e; | |
2698 | match m, n; | |
51f03c6b | 2699 | bool fail; |
187de1ed FXC |
2700 | |
2701 | m = MATCH_NO; | |
2702 | e = NULL; | |
2703 | where = gfc_current_locus; | |
2704 | ||
2705 | n = gfc_match_init_expr (&e); | |
96ee3a4a | 2706 | |
1c8bcdf7 | 2707 | if (n != MATCH_YES && gfc_matching_function) |
96ee3a4a | 2708 | { |
1c8bcdf7 | 2709 | /* The expression might include use-associated or imported |
f5acf0f2 | 2710 | parameters and try again after the specification |
1c8bcdf7 | 2711 | expressions. */ |
96ee3a4a | 2712 | gfc_free_expr (e); |
96ee3a4a TB |
2713 | gfc_undo_symbols (); |
2714 | return MATCH_YES; | |
2715 | } | |
2716 | ||
187de1ed FXC |
2717 | if (n == MATCH_NO) |
2718 | gfc_error ("Expected initialization expression at %C"); | |
2719 | if (n != MATCH_YES) | |
2720 | return MATCH_ERROR; | |
2721 | ||
2722 | if (e->rank != 0) | |
2723 | { | |
2724 | gfc_error ("Expected scalar initialization expression at %C"); | |
2725 | m = MATCH_ERROR; | |
2726 | goto no_match; | |
2727 | } | |
2728 | ||
51f03c6b | 2729 | fail = gfc_extract_int (e, kind, 1); |
187de1ed | 2730 | *is_iso_c = e->ts.is_iso_c; |
51f03c6b | 2731 | if (fail) |
187de1ed | 2732 | { |
187de1ed FXC |
2733 | m = MATCH_ERROR; |
2734 | goto no_match; | |
2735 | } | |
2736 | ||
2737 | gfc_free_expr (e); | |
2738 | ||
2739 | /* Ignore errors to this point, if we've gotten here. This means | |
2740 | we ignore the m=MATCH_ERROR from above. */ | |
2741 | if (gfc_validate_kind (BT_CHARACTER, *kind, true) < 0) | |
2742 | { | |
2743 | gfc_error ("Kind %d is not supported for CHARACTER at %C", *kind); | |
2744 | m = MATCH_ERROR; | |
2745 | } | |
2746 | else | |
2747 | /* All tests passed. */ | |
2748 | m = MATCH_YES; | |
2749 | ||
2750 | if (m == MATCH_ERROR) | |
2751 | gfc_current_locus = where; | |
f5acf0f2 | 2752 | |
187de1ed FXC |
2753 | /* Return what we know from the test(s). */ |
2754 | return m; | |
2755 | ||
2756 | no_match: | |
2757 | gfc_free_expr (e); | |
2758 | gfc_current_locus = where; | |
2759 | return m; | |
2760 | } | |
2761 | ||
8234e5e0 | 2762 | |
6de9cd9a DN |
2763 | /* Match the various kind/length specifications in a CHARACTER |
2764 | declaration. We don't return MATCH_NO. */ | |
2765 | ||
8234e5e0 SK |
2766 | match |
2767 | gfc_match_char_spec (gfc_typespec *ts) | |
6de9cd9a | 2768 | { |
187de1ed | 2769 | int kind, seen_length, is_iso_c; |
6de9cd9a DN |
2770 | gfc_charlen *cl; |
2771 | gfc_expr *len; | |
2772 | match m; | |
e69afb29 | 2773 | bool deferred; |
187de1ed | 2774 | |
6de9cd9a DN |
2775 | len = NULL; |
2776 | seen_length = 0; | |
187de1ed FXC |
2777 | kind = 0; |
2778 | is_iso_c = 0; | |
e69afb29 | 2779 | deferred = false; |
6de9cd9a DN |
2780 | |
2781 | /* Try the old-style specification first. */ | |
2782 | old_char_selector = 0; | |
2783 | ||
2767f2cc | 2784 | m = match_char_length (&len, &deferred, true); |
6de9cd9a DN |
2785 | if (m != MATCH_NO) |
2786 | { | |
2787 | if (m == MATCH_YES) | |
2788 | old_char_selector = 1; | |
2789 | seen_length = 1; | |
2790 | goto done; | |
2791 | } | |
2792 | ||
2793 | m = gfc_match_char ('('); | |
2794 | if (m != MATCH_YES) | |
2795 | { | |
a8b3b0b6 | 2796 | m = MATCH_YES; /* Character without length is a single char. */ |
6de9cd9a DN |
2797 | goto done; |
2798 | } | |
2799 | ||
a8b3b0b6 | 2800 | /* Try the weird case: ( KIND = <int> [ , LEN = <len-param> ] ). */ |
6de9cd9a DN |
2801 | if (gfc_match (" kind =") == MATCH_YES) |
2802 | { | |
187de1ed | 2803 | m = match_char_kind (&kind, &is_iso_c); |
f5acf0f2 | 2804 | |
6de9cd9a DN |
2805 | if (m == MATCH_ERROR) |
2806 | goto done; | |
2807 | if (m == MATCH_NO) | |
2808 | goto syntax; | |
2809 | ||
2810 | if (gfc_match (" , len =") == MATCH_NO) | |
2811 | goto rparen; | |
2812 | ||
e69afb29 | 2813 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
2814 | if (m == MATCH_NO) |
2815 | goto syntax; | |
2816 | if (m == MATCH_ERROR) | |
2817 | goto done; | |
2818 | seen_length = 1; | |
2819 | ||
2820 | goto rparen; | |
2821 | } | |
2822 | ||
66e4ab31 | 2823 | /* Try to match "LEN = <len-param>" or "LEN = <len-param>, KIND = <int>". */ |
6de9cd9a DN |
2824 | if (gfc_match (" len =") == MATCH_YES) |
2825 | { | |
e69afb29 | 2826 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
2827 | if (m == MATCH_NO) |
2828 | goto syntax; | |
2829 | if (m == MATCH_ERROR) | |
2830 | goto done; | |
2831 | seen_length = 1; | |
2832 | ||
2833 | if (gfc_match_char (')') == MATCH_YES) | |
2834 | goto done; | |
2835 | ||
2836 | if (gfc_match (" , kind =") != MATCH_YES) | |
2837 | goto syntax; | |
2838 | ||
187de1ed FXC |
2839 | if (match_char_kind (&kind, &is_iso_c) == MATCH_ERROR) |
2840 | goto done; | |
6de9cd9a DN |
2841 | |
2842 | goto rparen; | |
2843 | } | |
2844 | ||
66e4ab31 | 2845 | /* Try to match ( <len-param> ) or ( <len-param> , [ KIND = ] <int> ). */ |
e69afb29 | 2846 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
2847 | if (m == MATCH_NO) |
2848 | goto syntax; | |
2849 | if (m == MATCH_ERROR) | |
2850 | goto done; | |
2851 | seen_length = 1; | |
2852 | ||
2853 | m = gfc_match_char (')'); | |
2854 | if (m == MATCH_YES) | |
2855 | goto done; | |
2856 | ||
2857 | if (gfc_match_char (',') != MATCH_YES) | |
2858 | goto syntax; | |
2859 | ||
a8b3b0b6 | 2860 | gfc_match (" kind ="); /* Gobble optional text. */ |
6de9cd9a | 2861 | |
187de1ed | 2862 | m = match_char_kind (&kind, &is_iso_c); |
6de9cd9a DN |
2863 | if (m == MATCH_ERROR) |
2864 | goto done; | |
2865 | if (m == MATCH_NO) | |
2866 | goto syntax; | |
2867 | ||
2868 | rparen: | |
2869 | /* Require a right-paren at this point. */ | |
2870 | m = gfc_match_char (')'); | |
2871 | if (m == MATCH_YES) | |
2872 | goto done; | |
2873 | ||
2874 | syntax: | |
2875 | gfc_error ("Syntax error in CHARACTER declaration at %C"); | |
2876 | m = MATCH_ERROR; | |
16f8ffc8 JD |
2877 | gfc_free_expr (len); |
2878 | return m; | |
6de9cd9a DN |
2879 | |
2880 | done: | |
a99d95a2 PT |
2881 | /* Deal with character functions after USE and IMPORT statements. */ |
2882 | if (gfc_matching_function) | |
1c8bcdf7 | 2883 | { |
a99d95a2 | 2884 | gfc_free_expr (len); |
1c8bcdf7 PT |
2885 | gfc_undo_symbols (); |
2886 | return MATCH_YES; | |
2887 | } | |
2888 | ||
6de9cd9a DN |
2889 | if (m != MATCH_YES) |
2890 | { | |
2891 | gfc_free_expr (len); | |
2892 | return m; | |
2893 | } | |
2894 | ||
2895 | /* Do some final massaging of the length values. */ | |
b76e28c6 | 2896 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
2897 | |
2898 | if (seen_length == 0) | |
b7e75771 | 2899 | cl->length = gfc_get_int_expr (gfc_default_integer_kind, NULL, 1); |
6de9cd9a | 2900 | else |
5cd09fac | 2901 | cl->length = len; |
6de9cd9a | 2902 | |
bc21d315 | 2903 | ts->u.cl = cl; |
187de1ed | 2904 | ts->kind = kind == 0 ? gfc_default_character_kind : kind; |
e69afb29 | 2905 | ts->deferred = deferred; |
6de9cd9a | 2906 | |
eea58adb | 2907 | /* We have to know if it was a C interoperable kind so we can |
a8b3b0b6 | 2908 | do accurate type checking of bind(c) procs, etc. */ |
187de1ed | 2909 | if (kind != 0) |
eea58adb | 2910 | /* Mark this as C interoperable if being declared with one |
187de1ed FXC |
2911 | of the named constants from iso_c_binding. */ |
2912 | ts->is_c_interop = is_iso_c; | |
a8b3b0b6 | 2913 | else if (len != NULL) |
187de1ed FXC |
2914 | /* Here, we might have parsed something such as: character(c_char) |
2915 | In this case, the parsing code above grabs the c_char when | |
2916 | looking for the length (line 1690, roughly). it's the last | |
2917 | testcase for parsing the kind params of a character variable. | |
2918 | However, it's not actually the length. this seems like it | |
f5acf0f2 | 2919 | could be an error. |
187de1ed FXC |
2920 | To see if the user used a C interop kind, test the expr |
2921 | of the so called length, and see if it's C interoperable. */ | |
2922 | ts->is_c_interop = len->ts.is_iso_c; | |
f5acf0f2 | 2923 | |
6de9cd9a DN |
2924 | return MATCH_YES; |
2925 | } | |
2926 | ||
2927 | ||
f6288c24 FR |
2928 | /* Matches a RECORD declaration. */ |
2929 | ||
2930 | static match | |
e79e6763 | 2931 | match_record_decl (char *name) |
f6288c24 FR |
2932 | { |
2933 | locus old_loc; | |
2934 | old_loc = gfc_current_locus; | |
e79e6763 | 2935 | match m; |
f6288c24 | 2936 | |
e79e6763 FR |
2937 | m = gfc_match (" record /"); |
2938 | if (m == MATCH_YES) | |
f6288c24 | 2939 | { |
f6d17ecd | 2940 | if (!flag_dec_structure) |
f6288c24 FR |
2941 | { |
2942 | gfc_current_locus = old_loc; | |
2943 | gfc_error ("RECORD at %C is an extension, enable it with " | |
2944 | "-fdec-structure"); | |
2945 | return MATCH_ERROR; | |
2946 | } | |
e79e6763 FR |
2947 | m = gfc_match (" %n/", name); |
2948 | if (m == MATCH_YES) | |
2949 | return MATCH_YES; | |
f6288c24 FR |
2950 | } |
2951 | ||
e79e6763 | 2952 | gfc_current_locus = old_loc; |
f6d17ecd | 2953 | if (flag_dec_structure |
e79e6763 FR |
2954 | && (gfc_match (" record% ") == MATCH_YES |
2955 | || gfc_match (" record%t") == MATCH_YES)) | |
2956 | gfc_error ("Structure name expected after RECORD at %C"); | |
2957 | if (m == MATCH_NO) | |
f6288c24 | 2958 | return MATCH_NO; |
e79e6763 FR |
2959 | |
2960 | return MATCH_ERROR; | |
f6288c24 FR |
2961 | } |
2962 | ||
e74f1cc8 JW |
2963 | /* Matches a declaration-type-spec (F03:R502). If successful, sets the ts |
2964 | structure to the matched specification. This is necessary for FUNCTION and | |
6de9cd9a DN |
2965 | IMPLICIT statements. |
2966 | ||
d51347f9 | 2967 | If implicit_flag is nonzero, then we don't check for the optional |
e5ddaa24 | 2968 | kind specification. Not doing so is needed for matching an IMPLICIT |
6de9cd9a DN |
2969 | statement correctly. */ |
2970 | ||
e2d29968 | 2971 | match |
e74f1cc8 | 2972 | gfc_match_decl_type_spec (gfc_typespec *ts, int implicit_flag) |
6de9cd9a DN |
2973 | { |
2974 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c3f34952 | 2975 | gfc_symbol *sym, *dt_sym; |
6de9cd9a | 2976 | match m; |
8fc541d3 | 2977 | char c; |
0fb56814 | 2978 | bool seen_deferred_kind, matched_type; |
c3f34952 | 2979 | const char *dt_name; |
6de9cd9a | 2980 | |
1c8bcdf7 PT |
2981 | /* A belt and braces check that the typespec is correctly being treated |
2982 | as a deferred characteristic association. */ | |
2983 | seen_deferred_kind = (gfc_current_state () == COMP_FUNCTION) | |
a99d95a2 PT |
2984 | && (gfc_current_block ()->result->ts.kind == -1) |
2985 | && (ts->kind == -1); | |
6de9cd9a | 2986 | gfc_clear_ts (ts); |
1c8bcdf7 PT |
2987 | if (seen_deferred_kind) |
2988 | ts->kind = -1; | |
6de9cd9a | 2989 | |
a8b3b0b6 | 2990 | /* Clear the current binding label, in case one is given. */ |
62603fae | 2991 | curr_binding_label = NULL; |
a8b3b0b6 | 2992 | |
5f700e6d AL |
2993 | if (gfc_match (" byte") == MATCH_YES) |
2994 | { | |
524af0d6 | 2995 | if (!gfc_notify_std (GFC_STD_GNU, "BYTE type at %C")) |
5f700e6d AL |
2996 | return MATCH_ERROR; |
2997 | ||
2998 | if (gfc_validate_kind (BT_INTEGER, 1, true) < 0) | |
2999 | { | |
3000 | gfc_error ("BYTE type used at %C " | |
3001 | "is not available on the target machine"); | |
3002 | return MATCH_ERROR; | |
3003 | } | |
d51347f9 | 3004 | |
5f700e6d AL |
3005 | ts->type = BT_INTEGER; |
3006 | ts->kind = 1; | |
3007 | return MATCH_YES; | |
3008 | } | |
3009 | ||
0fb56814 | 3010 | |
45a69325 | 3011 | m = gfc_match (" type ("); |
0fb56814 | 3012 | matched_type = (m == MATCH_YES); |
45a69325 TB |
3013 | if (matched_type) |
3014 | { | |
3015 | gfc_gobble_whitespace (); | |
3016 | if (gfc_peek_ascii_char () == '*') | |
3017 | { | |
3018 | if ((m = gfc_match ("*)")) != MATCH_YES) | |
3019 | return m; | |
f6288c24 | 3020 | if (gfc_comp_struct (gfc_current_state ())) |
45a69325 TB |
3021 | { |
3022 | gfc_error ("Assumed type at %C is not allowed for components"); | |
3023 | return MATCH_ERROR; | |
3024 | } | |
524af0d6 JB |
3025 | if (!gfc_notify_std (GFC_STD_F2008_TS, "Assumed type " |
3026 | "at %C")) | |
45a69325 TB |
3027 | return MATCH_ERROR; |
3028 | ts->type = BT_ASSUMED; | |
3029 | return MATCH_YES; | |
3030 | } | |
3031 | ||
3032 | m = gfc_match ("%n", name); | |
3033 | matched_type = (m == MATCH_YES); | |
3034 | } | |
3035 | ||
0fb56814 TB |
3036 | if ((matched_type && strcmp ("integer", name) == 0) |
3037 | || (!matched_type && gfc_match (" integer") == MATCH_YES)) | |
6de9cd9a DN |
3038 | { |
3039 | ts->type = BT_INTEGER; | |
9d64df18 | 3040 | ts->kind = gfc_default_integer_kind; |
6de9cd9a DN |
3041 | goto get_kind; |
3042 | } | |
3043 | ||
0fb56814 TB |
3044 | if ((matched_type && strcmp ("character", name) == 0) |
3045 | || (!matched_type && gfc_match (" character") == MATCH_YES)) | |
6de9cd9a | 3046 | { |
0fb56814 | 3047 | if (matched_type |
524af0d6 JB |
3048 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3049 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
3050 | return MATCH_ERROR; |
3051 | ||
6de9cd9a | 3052 | ts->type = BT_CHARACTER; |
e5ddaa24 | 3053 | if (implicit_flag == 0) |
0fb56814 | 3054 | m = gfc_match_char_spec (ts); |
e5ddaa24 | 3055 | else |
0fb56814 TB |
3056 | m = MATCH_YES; |
3057 | ||
3058 | if (matched_type && m == MATCH_YES && gfc_match_char (')') != MATCH_YES) | |
3059 | m = MATCH_ERROR; | |
3060 | ||
3061 | return m; | |
6de9cd9a DN |
3062 | } |
3063 | ||
0fb56814 TB |
3064 | if ((matched_type && strcmp ("real", name) == 0) |
3065 | || (!matched_type && gfc_match (" real") == MATCH_YES)) | |
6de9cd9a DN |
3066 | { |
3067 | ts->type = BT_REAL; | |
9d64df18 | 3068 | ts->kind = gfc_default_real_kind; |
6de9cd9a DN |
3069 | goto get_kind; |
3070 | } | |
3071 | ||
0fb56814 TB |
3072 | if ((matched_type |
3073 | && (strcmp ("doubleprecision", name) == 0 | |
3074 | || (strcmp ("double", name) == 0 | |
3075 | && gfc_match (" precision") == MATCH_YES))) | |
3076 | || (!matched_type && gfc_match (" double precision") == MATCH_YES)) | |
6de9cd9a | 3077 | { |
0fb56814 | 3078 | if (matched_type |
524af0d6 JB |
3079 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3080 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
3081 | return MATCH_ERROR; |
3082 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
3083 | return MATCH_ERROR; | |
3084 | ||
6de9cd9a | 3085 | ts->type = BT_REAL; |
9d64df18 | 3086 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
3087 | return MATCH_YES; |
3088 | } | |
3089 | ||
0fb56814 TB |
3090 | if ((matched_type && strcmp ("complex", name) == 0) |
3091 | || (!matched_type && gfc_match (" complex") == MATCH_YES)) | |
6de9cd9a DN |
3092 | { |
3093 | ts->type = BT_COMPLEX; | |
9d64df18 | 3094 | ts->kind = gfc_default_complex_kind; |
6de9cd9a DN |
3095 | goto get_kind; |
3096 | } | |
3097 | ||
0fb56814 TB |
3098 | if ((matched_type |
3099 | && (strcmp ("doublecomplex", name) == 0 | |
3100 | || (strcmp ("double", name) == 0 | |
3101 | && gfc_match (" complex") == MATCH_YES))) | |
3102 | || (!matched_type && gfc_match (" double complex") == MATCH_YES)) | |
6de9cd9a | 3103 | { |
524af0d6 | 3104 | if (!gfc_notify_std (GFC_STD_GNU, "DOUBLE COMPLEX at %C")) |
0fb56814 TB |
3105 | return MATCH_ERROR; |
3106 | ||
3107 | if (matched_type | |
524af0d6 JB |
3108 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3109 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
3110 | return MATCH_ERROR; |
3111 | ||
3112 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
df8652dc SK |
3113 | return MATCH_ERROR; |
3114 | ||
6de9cd9a | 3115 | ts->type = BT_COMPLEX; |
9d64df18 | 3116 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
3117 | return MATCH_YES; |
3118 | } | |
3119 | ||
0fb56814 TB |
3120 | if ((matched_type && strcmp ("logical", name) == 0) |
3121 | || (!matched_type && gfc_match (" logical") == MATCH_YES)) | |
6de9cd9a DN |
3122 | { |
3123 | ts->type = BT_LOGICAL; | |
9d64df18 | 3124 | ts->kind = gfc_default_logical_kind; |
6de9cd9a DN |
3125 | goto get_kind; |
3126 | } | |
3127 | ||
0fb56814 TB |
3128 | if (matched_type) |
3129 | m = gfc_match_char (')'); | |
3130 | ||
f6288c24 FR |
3131 | if (m != MATCH_YES) |
3132 | m = match_record_decl (name); | |
3133 | ||
3134 | if (matched_type || m == MATCH_YES) | |
3135 | { | |
3136 | ts->type = BT_DERIVED; | |
3137 | /* We accept record/s/ or type(s) where s is a structure, but we | |
3138 | * don't need all the extra derived-type stuff for structures. */ | |
3139 | if (gfc_find_symbol (gfc_dt_upper_string (name), NULL, 1, &sym)) | |
3140 | { | |
3141 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
3142 | return MATCH_ERROR; | |
3143 | } | |
3144 | if (sym && sym->attr.flavor == FL_STRUCT) | |
3145 | { | |
3146 | ts->u.derived = sym; | |
3147 | return MATCH_YES; | |
3148 | } | |
3149 | /* Actually a derived type. */ | |
3150 | } | |
3151 | ||
cf2b3c22 | 3152 | else |
727e8544 | 3153 | { |
f6288c24 | 3154 | /* Match nested STRUCTURE declarations; only valid within another |
e79e6763 | 3155 | structure declaration. */ |
f6d17ecd | 3156 | if (flag_dec_structure |
e79e6763 FR |
3157 | && (gfc_current_state () == COMP_STRUCTURE |
3158 | || gfc_current_state () == COMP_MAP)) | |
3159 | { | |
3160 | m = gfc_match (" structure"); | |
3161 | if (m == MATCH_YES) | |
3162 | { | |
3163 | m = gfc_match_structure_decl (); | |
3164 | if (m == MATCH_YES) | |
3165 | { | |
3166 | /* gfc_new_block is updated by match_structure_decl. */ | |
3167 | ts->type = BT_DERIVED; | |
3168 | ts->u.derived = gfc_new_block; | |
3169 | return MATCH_YES; | |
3170 | } | |
3171 | } | |
3172 | if (m == MATCH_ERROR) | |
3173 | return MATCH_ERROR; | |
3174 | } | |
f6288c24 | 3175 | |
528622fd JW |
3176 | /* Match CLASS declarations. */ |
3177 | m = gfc_match (" class ( * )"); | |
3178 | if (m == MATCH_ERROR) | |
3179 | return MATCH_ERROR; | |
3180 | else if (m == MATCH_YES) | |
3181 | { | |
8b704316 PT |
3182 | gfc_symbol *upe; |
3183 | gfc_symtree *st; | |
3184 | ts->type = BT_CLASS; | |
f5acf0f2 | 3185 | gfc_find_symbol ("STAR", gfc_current_ns, 1, &upe); |
8b704316 PT |
3186 | if (upe == NULL) |
3187 | { | |
f5acf0f2 PT |
3188 | upe = gfc_new_symbol ("STAR", gfc_current_ns); |
3189 | st = gfc_new_symtree (&gfc_current_ns->sym_root, "STAR"); | |
8b704316 PT |
3190 | st->n.sym = upe; |
3191 | gfc_set_sym_referenced (upe); | |
3192 | upe->refs++; | |
3193 | upe->ts.type = BT_VOID; | |
3194 | upe->attr.unlimited_polymorphic = 1; | |
3195 | /* This is essential to force the construction of | |
3196 | unlimited polymorphic component class containers. */ | |
3197 | upe->attr.zero_comp = 1; | |
70112e2a | 3198 | if (!gfc_add_flavor (&upe->attr, FL_DERIVED, NULL, |
524af0d6 | 3199 | &gfc_current_locus)) |
b93d8a3f JW |
3200 | return MATCH_ERROR; |
3201 | } | |
8b704316 PT |
3202 | else |
3203 | { | |
b93d8a3f | 3204 | st = gfc_get_tbp_symtree (&gfc_current_ns->sym_root, "STAR"); |
8b704316 PT |
3205 | st->n.sym = upe; |
3206 | upe->refs++; | |
3207 | } | |
3208 | ts->u.derived = upe; | |
3209 | return m; | |
3210 | } | |
528622fd | 3211 | |
727e8544 JW |
3212 | m = gfc_match (" class ( %n )", name); |
3213 | if (m != MATCH_YES) | |
3214 | return m; | |
cf2b3c22 | 3215 | ts->type = BT_CLASS; |
727e8544 | 3216 | |
524af0d6 | 3217 | if (!gfc_notify_std (GFC_STD_F2003, "CLASS statement at %C")) |
e74f1cc8 | 3218 | return MATCH_ERROR; |
727e8544 | 3219 | } |
6de9cd9a | 3220 | |
1c8bcdf7 PT |
3221 | /* Defer association of the derived type until the end of the |
3222 | specification block. However, if the derived type can be | |
f5acf0f2 | 3223 | found, add it to the typespec. */ |
1c8bcdf7 | 3224 | if (gfc_matching_function) |
e2d29968 | 3225 | { |
bc21d315 | 3226 | ts->u.derived = NULL; |
1c8bcdf7 PT |
3227 | if (gfc_current_state () != COMP_INTERFACE |
3228 | && !gfc_find_symbol (name, NULL, 1, &sym) && sym) | |
c3f34952 TB |
3229 | { |
3230 | sym = gfc_find_dt_in_generic (sym); | |
3231 | ts->u.derived = sym; | |
3232 | } | |
e2d29968 PT |
3233 | return MATCH_YES; |
3234 | } | |
3235 | ||
3236 | /* Search for the name but allow the components to be defined later. If | |
3237 | type = -1, this typespec has been seen in a function declaration but | |
c3f34952 | 3238 | the type could not be accessed at that point. The actual derived type is |
eea58adb | 3239 | stored in a symtree with the first letter of the name capitalized; the |
c3f34952 TB |
3240 | symtree with the all lower-case name contains the associated |
3241 | generic function. */ | |
f6288c24 | 3242 | dt_name = gfc_dt_upper_string (name); |
1c8bcdf7 | 3243 | sym = NULL; |
c3f34952 TB |
3244 | dt_sym = NULL; |
3245 | if (ts->kind != -1) | |
6de9cd9a | 3246 | { |
c3f34952 TB |
3247 | gfc_get_ha_symbol (name, &sym); |
3248 | if (sym->generic && gfc_find_symbol (dt_name, NULL, 0, &dt_sym)) | |
3249 | { | |
c4100eae | 3250 | gfc_error ("Type name %qs at %C is ambiguous", name); |
c3f34952 TB |
3251 | return MATCH_ERROR; |
3252 | } | |
3253 | if (sym->generic && !dt_sym) | |
3254 | dt_sym = gfc_find_dt_in_generic (sym); | |
6de9cd9a | 3255 | } |
e2d29968 PT |
3256 | else if (ts->kind == -1) |
3257 | { | |
1c8bcdf7 PT |
3258 | int iface = gfc_state_stack->previous->state != COMP_INTERFACE |
3259 | || gfc_current_ns->has_import_set; | |
c3f34952 TB |
3260 | gfc_find_symbol (name, NULL, iface, &sym); |
3261 | if (sym && sym->generic && gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
f5acf0f2 | 3262 | { |
c4100eae | 3263 | gfc_error ("Type name %qs at %C is ambiguous", name); |
e2d29968 PT |
3264 | return MATCH_ERROR; |
3265 | } | |
c3f34952 TB |
3266 | if (sym && sym->generic && !dt_sym) |
3267 | dt_sym = gfc_find_dt_in_generic (sym); | |
e2d29968 | 3268 | |
1c8bcdf7 | 3269 | ts->kind = 0; |
e2d29968 PT |
3270 | if (sym == NULL) |
3271 | return MATCH_NO; | |
3272 | } | |
6de9cd9a | 3273 | |
f6288c24 | 3274 | if ((sym->attr.flavor != FL_UNKNOWN && sym->attr.flavor != FL_STRUCT |
c3f34952 TB |
3275 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.generic)) |
3276 | || sym->attr.subroutine) | |
3277 | { | |
fea70c99 MLI |
3278 | gfc_error ("Type name %qs at %C conflicts with previously declared " |
3279 | "entity at %L, which has the same name", name, | |
3280 | &sym->declared_at); | |
c3f34952 TB |
3281 | return MATCH_ERROR; |
3282 | } | |
6de9cd9a | 3283 | |
44c57c2f | 3284 | gfc_save_symbol_data (sym); |
1c8bcdf7 | 3285 | gfc_set_sym_referenced (sym); |
c3f34952 | 3286 | if (!sym->attr.generic |
524af0d6 | 3287 | && !gfc_add_generic (&sym->attr, sym->name, NULL)) |
c3f34952 TB |
3288 | return MATCH_ERROR; |
3289 | ||
3290 | if (!sym->attr.function | |
524af0d6 | 3291 | && !gfc_add_function (&sym->attr, sym->name, NULL)) |
c3f34952 TB |
3292 | return MATCH_ERROR; |
3293 | ||
3294 | if (!dt_sym) | |
3295 | { | |
3296 | gfc_interface *intr, *head; | |
3297 | ||
3298 | /* Use upper case to save the actual derived-type symbol. */ | |
3299 | gfc_get_symbol (dt_name, NULL, &dt_sym); | |
51f03c6b | 3300 | dt_sym->name = gfc_get_string ("%s", sym->name); |
c3f34952 TB |
3301 | head = sym->generic; |
3302 | intr = gfc_get_interface (); | |
3303 | intr->sym = dt_sym; | |
3304 | intr->where = gfc_current_locus; | |
3305 | intr->next = head; | |
3306 | sym->generic = intr; | |
3307 | sym->attr.if_source = IFSRC_DECL; | |
3308 | } | |
44c57c2f MM |
3309 | else |
3310 | gfc_save_symbol_data (dt_sym); | |
c3f34952 TB |
3311 | |
3312 | gfc_set_sym_referenced (dt_sym); | |
3313 | ||
f6288c24 | 3314 | if (dt_sym->attr.flavor != FL_DERIVED && dt_sym->attr.flavor != FL_STRUCT |
524af0d6 | 3315 | && !gfc_add_flavor (&dt_sym->attr, FL_DERIVED, sym->name, NULL)) |
c3f34952 TB |
3316 | return MATCH_ERROR; |
3317 | ||
3318 | ts->u.derived = dt_sym; | |
6de9cd9a DN |
3319 | |
3320 | return MATCH_YES; | |
3321 | ||
3322 | get_kind: | |
0fb56814 | 3323 | if (matched_type |
524af0d6 JB |
3324 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3325 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
3326 | return MATCH_ERROR; |
3327 | ||
6de9cd9a DN |
3328 | /* For all types except double, derived and character, look for an |
3329 | optional kind specifier. MATCH_NO is actually OK at this point. */ | |
e5ddaa24 | 3330 | if (implicit_flag == 1) |
0fb56814 TB |
3331 | { |
3332 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
3333 | return MATCH_ERROR; | |
3334 | ||
3335 | return MATCH_YES; | |
3336 | } | |
6de9cd9a | 3337 | |
0ff0dfbf TS |
3338 | if (gfc_current_form == FORM_FREE) |
3339 | { | |
0b3624f6 SK |
3340 | c = gfc_peek_ascii_char (); |
3341 | if (!gfc_is_whitespace (c) && c != '*' && c != '(' | |
636dff67 | 3342 | && c != ':' && c != ',') |
0fb56814 TB |
3343 | { |
3344 | if (matched_type && c == ')') | |
3345 | { | |
3346 | gfc_next_ascii_char (); | |
3347 | return MATCH_YES; | |
3348 | } | |
3349 | return MATCH_NO; | |
3350 | } | |
0ff0dfbf TS |
3351 | } |
3352 | ||
e2d29968 | 3353 | m = gfc_match_kind_spec (ts, false); |
6de9cd9a | 3354 | if (m == MATCH_NO && ts->type != BT_CHARACTER) |
4381322d SK |
3355 | { |
3356 | m = gfc_match_old_kind_spec (ts); | |
3357 | if (gfc_validate_kind (ts->type, ts->kind, true) == -1) | |
3358 | return MATCH_ERROR; | |
3359 | } | |
6de9cd9a | 3360 | |
0fb56814 TB |
3361 | if (matched_type && gfc_match_char (')') != MATCH_YES) |
3362 | return MATCH_ERROR; | |
3363 | ||
1c8bcdf7 PT |
3364 | /* Defer association of the KIND expression of function results |
3365 | until after USE and IMPORT statements. */ | |
3366 | if ((gfc_current_state () == COMP_NONE && gfc_error_flag_test ()) | |
3367 | || gfc_matching_function) | |
3368 | return MATCH_YES; | |
3369 | ||
6de9cd9a DN |
3370 | if (m == MATCH_NO) |
3371 | m = MATCH_YES; /* No kind specifier found. */ | |
3372 | ||
3373 | return m; | |
3374 | } | |
3375 | ||
3376 | ||
e5ddaa24 TS |
3377 | /* Match an IMPLICIT NONE statement. Actually, this statement is |
3378 | already matched in parse.c, or we would not end up here in the | |
3379 | first place. So the only thing we need to check, is if there is | |
3380 | trailing garbage. If not, the match is successful. */ | |
3381 | ||
3382 | match | |
3383 | gfc_match_implicit_none (void) | |
3384 | { | |
8b7a967e TB |
3385 | char c; |
3386 | match m; | |
3387 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
3388 | bool type = false; | |
3389 | bool external = false; | |
a6c63173 TB |
3390 | locus cur_loc = gfc_current_locus; |
3391 | ||
3392 | if (gfc_current_ns->seen_implicit_none | |
3393 | || gfc_current_ns->has_implicit_none_export) | |
3394 | { | |
3395 | gfc_error ("Duplicate IMPLICIT NONE statement at %C"); | |
3396 | return MATCH_ERROR; | |
3397 | } | |
8b7a967e TB |
3398 | |
3399 | gfc_gobble_whitespace (); | |
3400 | c = gfc_peek_ascii_char (); | |
3401 | if (c == '(') | |
3402 | { | |
3403 | (void) gfc_next_ascii_char (); | |
3404 | if (!gfc_notify_std (GFC_STD_F2015, "IMPORT NONE with spec list at %C")) | |
3405 | return MATCH_ERROR; | |
a6c63173 TB |
3406 | |
3407 | gfc_gobble_whitespace (); | |
3408 | if (gfc_peek_ascii_char () == ')') | |
8b7a967e | 3409 | { |
a6c63173 TB |
3410 | (void) gfc_next_ascii_char (); |
3411 | type = true; | |
3412 | } | |
3413 | else | |
3414 | for(;;) | |
3415 | { | |
3416 | m = gfc_match (" %n", name); | |
3417 | if (m != MATCH_YES) | |
3418 | return MATCH_ERROR; | |
8b7a967e | 3419 | |
a6c63173 TB |
3420 | if (strcmp (name, "type") == 0) |
3421 | type = true; | |
3422 | else if (strcmp (name, "external") == 0) | |
3423 | external = true; | |
3424 | else | |
3425 | return MATCH_ERROR; | |
8b7a967e | 3426 | |
a6c63173 TB |
3427 | gfc_gobble_whitespace (); |
3428 | c = gfc_next_ascii_char (); | |
3429 | if (c == ',') | |
3430 | continue; | |
3431 | if (c == ')') | |
3432 | break; | |
3433 | return MATCH_ERROR; | |
3434 | } | |
8b7a967e TB |
3435 | } |
3436 | else | |
3437 | type = true; | |
3438 | ||
3439 | if (gfc_match_eos () != MATCH_YES) | |
3440 | return MATCH_ERROR; | |
3441 | ||
a6c63173 | 3442 | gfc_set_implicit_none (type, external, &cur_loc); |
8b7a967e TB |
3443 | |
3444 | return MATCH_YES; | |
e5ddaa24 TS |
3445 | } |
3446 | ||
3447 | ||
3448 | /* Match the letter range(s) of an IMPLICIT statement. */ | |
3449 | ||
3450 | static match | |
1107b970 | 3451 | match_implicit_range (void) |
e5ddaa24 | 3452 | { |
8fc541d3 FXC |
3453 | char c, c1, c2; |
3454 | int inner; | |
e5ddaa24 TS |
3455 | locus cur_loc; |
3456 | ||
3457 | cur_loc = gfc_current_locus; | |
3458 | ||
3459 | gfc_gobble_whitespace (); | |
8fc541d3 | 3460 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
3461 | if (c != '(') |
3462 | { | |
3463 | gfc_error ("Missing character range in IMPLICIT at %C"); | |
3464 | goto bad; | |
3465 | } | |
3466 | ||
3467 | inner = 1; | |
3468 | while (inner) | |
3469 | { | |
3470 | gfc_gobble_whitespace (); | |
8fc541d3 | 3471 | c1 = gfc_next_ascii_char (); |
e5ddaa24 TS |
3472 | if (!ISALPHA (c1)) |
3473 | goto bad; | |
3474 | ||
3475 | gfc_gobble_whitespace (); | |
8fc541d3 | 3476 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
3477 | |
3478 | switch (c) | |
3479 | { | |
3480 | case ')': | |
66e4ab31 | 3481 | inner = 0; /* Fall through. */ |
e5ddaa24 TS |
3482 | |
3483 | case ',': | |
3484 | c2 = c1; | |
3485 | break; | |
3486 | ||
3487 | case '-': | |
3488 | gfc_gobble_whitespace (); | |
8fc541d3 | 3489 | c2 = gfc_next_ascii_char (); |
e5ddaa24 TS |
3490 | if (!ISALPHA (c2)) |
3491 | goto bad; | |
3492 | ||
3493 | gfc_gobble_whitespace (); | |
8fc541d3 | 3494 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
3495 | |
3496 | if ((c != ',') && (c != ')')) | |
3497 | goto bad; | |
3498 | if (c == ')') | |
3499 | inner = 0; | |
3500 | ||
3501 | break; | |
3502 | ||
3503 | default: | |
3504 | goto bad; | |
3505 | } | |
3506 | ||
3507 | if (c1 > c2) | |
3508 | { | |
3509 | gfc_error ("Letters must be in alphabetic order in " | |
3510 | "IMPLICIT statement at %C"); | |
3511 | goto bad; | |
3512 | } | |
3513 | ||
3514 | /* See if we can add the newly matched range to the pending | |
636dff67 SK |
3515 | implicits from this IMPLICIT statement. We do not check for |
3516 | conflicts with whatever earlier IMPLICIT statements may have | |
3517 | set. This is done when we've successfully finished matching | |
3518 | the current one. */ | |
524af0d6 | 3519 | if (!gfc_add_new_implicit_range (c1, c2)) |
e5ddaa24 TS |
3520 | goto bad; |
3521 | } | |
3522 | ||
3523 | return MATCH_YES; | |
3524 | ||
3525 | bad: | |
3526 | gfc_syntax_error (ST_IMPLICIT); | |
3527 | ||
3528 | gfc_current_locus = cur_loc; | |
3529 | return MATCH_ERROR; | |
3530 | } | |
3531 | ||
3532 | ||
3533 | /* Match an IMPLICIT statement, storing the types for | |
3534 | gfc_set_implicit() if the statement is accepted by the parser. | |
3535 | There is a strange looking, but legal syntactic construction | |
3536 | possible. It looks like: | |
3537 | ||
3538 | IMPLICIT INTEGER (a-b) (c-d) | |
3539 | ||
3540 | This is legal if "a-b" is a constant expression that happens to | |
3541 | equal one of the legal kinds for integers. The real problem | |
3542 | happens with an implicit specification that looks like: | |
3543 | ||
3544 | IMPLICIT INTEGER (a-b) | |
3545 | ||
3546 | In this case, a typespec matcher that is "greedy" (as most of the | |
3547 | matchers are) gobbles the character range as a kindspec, leaving | |
3548 | nothing left. We therefore have to go a bit more slowly in the | |
3549 | matching process by inhibiting the kindspec checking during | |
3550 | typespec matching and checking for a kind later. */ | |
3551 | ||
3552 | match | |
3553 | gfc_match_implicit (void) | |
3554 | { | |
3555 | gfc_typespec ts; | |
3556 | locus cur_loc; | |
8fc541d3 | 3557 | char c; |
e5ddaa24 TS |
3558 | match m; |
3559 | ||
8b7a967e TB |
3560 | if (gfc_current_ns->seen_implicit_none) |
3561 | { | |
3562 | gfc_error ("IMPLICIT statement at %C following an IMPLICIT NONE (type) " | |
3563 | "statement"); | |
3564 | return MATCH_ERROR; | |
3565 | } | |
3566 | ||
44000dbb JD |
3567 | gfc_clear_ts (&ts); |
3568 | ||
e5ddaa24 TS |
3569 | /* We don't allow empty implicit statements. */ |
3570 | if (gfc_match_eos () == MATCH_YES) | |
3571 | { | |
3572 | gfc_error ("Empty IMPLICIT statement at %C"); | |
3573 | return MATCH_ERROR; | |
3574 | } | |
3575 | ||
e5ddaa24 TS |
3576 | do |
3577 | { | |
1107b970 PB |
3578 | /* First cleanup. */ |
3579 | gfc_clear_new_implicit (); | |
3580 | ||
e5ddaa24 | 3581 | /* A basic type is mandatory here. */ |
e74f1cc8 | 3582 | m = gfc_match_decl_type_spec (&ts, 1); |
e5ddaa24 TS |
3583 | if (m == MATCH_ERROR) |
3584 | goto error; | |
3585 | if (m == MATCH_NO) | |
3586 | goto syntax; | |
3587 | ||
3588 | cur_loc = gfc_current_locus; | |
1107b970 | 3589 | m = match_implicit_range (); |
e5ddaa24 TS |
3590 | |
3591 | if (m == MATCH_YES) | |
3592 | { | |
1107b970 | 3593 | /* We may have <TYPE> (<RANGE>). */ |
e5ddaa24 | 3594 | gfc_gobble_whitespace (); |
a6c63173 TB |
3595 | c = gfc_peek_ascii_char (); |
3596 | if (c == ',' || c == '\n' || c == ';' || c == '!') | |
1107b970 PB |
3597 | { |
3598 | /* Check for CHARACTER with no length parameter. */ | |
bc21d315 | 3599 | if (ts.type == BT_CHARACTER && !ts.u.cl) |
1107b970 | 3600 | { |
9d64df18 | 3601 | ts.kind = gfc_default_character_kind; |
b76e28c6 | 3602 | ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
b7e75771 JD |
3603 | ts.u.cl->length = gfc_get_int_expr (gfc_default_integer_kind, |
3604 | NULL, 1); | |
1107b970 PB |
3605 | } |
3606 | ||
3607 | /* Record the Successful match. */ | |
524af0d6 | 3608 | if (!gfc_merge_new_implicit (&ts)) |
1107b970 | 3609 | return MATCH_ERROR; |
a6c63173 TB |
3610 | if (c == ',') |
3611 | c = gfc_next_ascii_char (); | |
3612 | else if (gfc_match_eos () == MATCH_ERROR) | |
3613 | goto error; | |
1107b970 PB |
3614 | continue; |
3615 | } | |
e5ddaa24 TS |
3616 | |
3617 | gfc_current_locus = cur_loc; | |
3618 | } | |
3619 | ||
1107b970 PB |
3620 | /* Discard the (incorrectly) matched range. */ |
3621 | gfc_clear_new_implicit (); | |
3622 | ||
3623 | /* Last chance -- check <TYPE> <SELECTOR> (<RANGE>). */ | |
3624 | if (ts.type == BT_CHARACTER) | |
8234e5e0 | 3625 | m = gfc_match_char_spec (&ts); |
1107b970 | 3626 | else |
e5ddaa24 | 3627 | { |
e2d29968 | 3628 | m = gfc_match_kind_spec (&ts, false); |
e5ddaa24 | 3629 | if (m == MATCH_NO) |
1107b970 PB |
3630 | { |
3631 | m = gfc_match_old_kind_spec (&ts); | |
3632 | if (m == MATCH_ERROR) | |
3633 | goto error; | |
3634 | if (m == MATCH_NO) | |
3635 | goto syntax; | |
3636 | } | |
e5ddaa24 | 3637 | } |
1107b970 PB |
3638 | if (m == MATCH_ERROR) |
3639 | goto error; | |
e5ddaa24 | 3640 | |
1107b970 | 3641 | m = match_implicit_range (); |
e5ddaa24 TS |
3642 | if (m == MATCH_ERROR) |
3643 | goto error; | |
3644 | if (m == MATCH_NO) | |
3645 | goto syntax; | |
3646 | ||
3647 | gfc_gobble_whitespace (); | |
8fc541d3 | 3648 | c = gfc_next_ascii_char (); |
a6c63173 | 3649 | if (c != ',' && gfc_match_eos () != MATCH_YES) |
e5ddaa24 TS |
3650 | goto syntax; |
3651 | ||
524af0d6 | 3652 | if (!gfc_merge_new_implicit (&ts)) |
1107b970 | 3653 | return MATCH_ERROR; |
e5ddaa24 TS |
3654 | } |
3655 | while (c == ','); | |
3656 | ||
1107b970 | 3657 | return MATCH_YES; |
e5ddaa24 TS |
3658 | |
3659 | syntax: | |
3660 | gfc_syntax_error (ST_IMPLICIT); | |
3661 | ||
3662 | error: | |
3663 | return MATCH_ERROR; | |
3664 | } | |
3665 | ||
66e4ab31 | 3666 | |
8998be20 TB |
3667 | match |
3668 | gfc_match_import (void) | |
3669 | { | |
3670 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
3671 | match m; | |
3672 | gfc_symbol *sym; | |
3673 | gfc_symtree *st; | |
3674 | ||
66e4ab31 SK |
3675 | if (gfc_current_ns->proc_name == NULL |
3676 | || gfc_current_ns->proc_name->attr.if_source != IFSRC_IFBODY) | |
8998be20 TB |
3677 | { |
3678 | gfc_error ("IMPORT statement at %C only permitted in " | |
3679 | "an INTERFACE body"); | |
3680 | return MATCH_ERROR; | |
3681 | } | |
3682 | ||
4668d6f9 PT |
3683 | if (gfc_current_ns->proc_name->attr.module_procedure) |
3684 | { | |
3685 | gfc_error ("F2008: C1210 IMPORT statement at %C is not permitted " | |
3686 | "in a module procedure interface body"); | |
3687 | return MATCH_ERROR; | |
3688 | } | |
3689 | ||
524af0d6 | 3690 | if (!gfc_notify_std (GFC_STD_F2003, "IMPORT statement at %C")) |
8998be20 TB |
3691 | return MATCH_ERROR; |
3692 | ||
3693 | if (gfc_match_eos () == MATCH_YES) | |
3694 | { | |
3695 | /* All host variables should be imported. */ | |
3696 | gfc_current_ns->has_import_set = 1; | |
3697 | return MATCH_YES; | |
3698 | } | |
3699 | ||
3700 | if (gfc_match (" ::") == MATCH_YES) | |
3701 | { | |
3702 | if (gfc_match_eos () == MATCH_YES) | |
636dff67 SK |
3703 | { |
3704 | gfc_error ("Expecting list of named entities at %C"); | |
3705 | return MATCH_ERROR; | |
3706 | } | |
8998be20 TB |
3707 | } |
3708 | ||
3709 | for(;;) | |
3710 | { | |
2e8d9212 | 3711 | sym = NULL; |
8998be20 TB |
3712 | m = gfc_match (" %n", name); |
3713 | switch (m) | |
3714 | { | |
3715 | case MATCH_YES: | |
36d3fb4c | 3716 | if (gfc_current_ns->parent != NULL |
66e4ab31 | 3717 | && gfc_find_symbol (name, gfc_current_ns->parent, 1, &sym)) |
36d3fb4c | 3718 | { |
c4100eae | 3719 | gfc_error ("Type name %qs at %C is ambiguous", name); |
36d3fb4c PT |
3720 | return MATCH_ERROR; |
3721 | } | |
4e2cf5f5 | 3722 | else if (!sym && gfc_current_ns->proc_name->ns->parent != NULL |
66e4ab31 SK |
3723 | && gfc_find_symbol (name, |
3724 | gfc_current_ns->proc_name->ns->parent, | |
3725 | 1, &sym)) | |
636dff67 | 3726 | { |
c4100eae | 3727 | gfc_error ("Type name %qs at %C is ambiguous", name); |
636dff67 SK |
3728 | return MATCH_ERROR; |
3729 | } | |
3730 | ||
3731 | if (sym == NULL) | |
3732 | { | |
c4100eae | 3733 | gfc_error ("Cannot IMPORT %qs from host scoping unit " |
636dff67 SK |
3734 | "at %C - does not exist.", name); |
3735 | return MATCH_ERROR; | |
3736 | } | |
3737 | ||
dd8b9dde | 3738 | if (gfc_find_symtree (gfc_current_ns->sym_root, name)) |
636dff67 | 3739 | { |
db30e21c | 3740 | gfc_warning (0, "%qs is already IMPORTed from host scoping unit " |
48749dbc | 3741 | "at %C", name); |
636dff67 SK |
3742 | goto next_item; |
3743 | } | |
3744 | ||
dd8b9dde | 3745 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); |
636dff67 SK |
3746 | st->n.sym = sym; |
3747 | sym->refs++; | |
5a8af0b4 | 3748 | sym->attr.imported = 1; |
8998be20 | 3749 | |
c3f34952 TB |
3750 | if (sym->attr.generic && (sym = gfc_find_dt_in_generic (sym))) |
3751 | { | |
3752 | /* The actual derived type is stored in a symtree with the first | |
eea58adb | 3753 | letter of the name capitalized; the symtree with the all |
1cc0e193 | 3754 | lower-case name contains the associated generic function. */ |
c3f34952 | 3755 | st = gfc_new_symtree (&gfc_current_ns->sym_root, |
f6288c24 | 3756 | gfc_dt_upper_string (name)); |
c3f34952 TB |
3757 | st->n.sym = sym; |
3758 | sym->refs++; | |
3759 | sym->attr.imported = 1; | |
3760 | } | |
3761 | ||
8998be20 TB |
3762 | goto next_item; |
3763 | ||
3764 | case MATCH_NO: | |
3765 | break; | |
3766 | ||
3767 | case MATCH_ERROR: | |
3768 | return MATCH_ERROR; | |
3769 | } | |
3770 | ||
3771 | next_item: | |
3772 | if (gfc_match_eos () == MATCH_YES) | |
3773 | break; | |
3774 | if (gfc_match_char (',') != MATCH_YES) | |
3775 | goto syntax; | |
3776 | } | |
3777 | ||
3778 | return MATCH_YES; | |
3779 | ||
3780 | syntax: | |
3781 | gfc_error ("Syntax error in IMPORT statement at %C"); | |
3782 | return MATCH_ERROR; | |
3783 | } | |
e5ddaa24 | 3784 | |
66e4ab31 | 3785 | |
f2449db4 RS |
3786 | /* A minimal implementation of gfc_match without whitespace, escape |
3787 | characters or variable arguments. Returns true if the next | |
3788 | characters match the TARGET template exactly. */ | |
3789 | ||
3790 | static bool | |
3791 | match_string_p (const char *target) | |
3792 | { | |
3793 | const char *p; | |
3794 | ||
3795 | for (p = target; *p; p++) | |
8fc541d3 | 3796 | if ((char) gfc_next_ascii_char () != *p) |
f2449db4 RS |
3797 | return false; |
3798 | return true; | |
3799 | } | |
3800 | ||
6de9cd9a DN |
3801 | /* Matches an attribute specification including array specs. If |
3802 | successful, leaves the variables current_attr and current_as | |
3803 | holding the specification. Also sets the colon_seen variable for | |
3804 | later use by matchers associated with initializations. | |
3805 | ||
3806 | This subroutine is a little tricky in the sense that we don't know | |
3807 | if we really have an attr-spec until we hit the double colon. | |
3808 | Until that time, we can only return MATCH_NO. This forces us to | |
3809 | check for duplicate specification at this level. */ | |
3810 | ||
3811 | static match | |
3812 | match_attr_spec (void) | |
3813 | { | |
6de9cd9a | 3814 | /* Modifiers that can exist in a type statement. */ |
d75d9546 | 3815 | enum |
6de9cd9a DN |
3816 | { GFC_DECL_BEGIN = 0, |
3817 | DECL_ALLOCATABLE = GFC_DECL_BEGIN, DECL_DIMENSION, DECL_EXTERNAL, | |
3818 | DECL_IN, DECL_OUT, DECL_INOUT, DECL_INTRINSIC, DECL_OPTIONAL, | |
ee7e677f | 3819 | DECL_PARAMETER, DECL_POINTER, DECL_PROTECTED, DECL_PRIVATE, |
34d567d1 | 3820 | DECL_STATIC, DECL_AUTOMATIC, |
ee7e677f | 3821 | DECL_PUBLIC, DECL_SAVE, DECL_TARGET, DECL_VALUE, DECL_VOLATILE, |
fe4e525c TB |
3822 | DECL_IS_BIND_C, DECL_CODIMENSION, DECL_ASYNCHRONOUS, DECL_CONTIGUOUS, |
3823 | DECL_NONE, GFC_DECL_END /* Sentinel */ | |
d75d9546 | 3824 | }; |
6de9cd9a DN |
3825 | |
3826 | /* GFC_DECL_END is the sentinel, index starts at 0. */ | |
3827 | #define NUM_DECL GFC_DECL_END | |
3828 | ||
6de9cd9a DN |
3829 | locus start, seen_at[NUM_DECL]; |
3830 | int seen[NUM_DECL]; | |
09639a83 | 3831 | unsigned int d; |
6de9cd9a DN |
3832 | const char *attr; |
3833 | match m; | |
524af0d6 | 3834 | bool t; |
6de9cd9a DN |
3835 | |
3836 | gfc_clear_attr (¤t_attr); | |
63645982 | 3837 | start = gfc_current_locus; |
6de9cd9a DN |
3838 | |
3839 | current_as = NULL; | |
3840 | colon_seen = 0; | |
3841 | ||
3842 | /* See if we get all of the keywords up to the final double colon. */ | |
3843 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3844 | seen[d] = 0; | |
3845 | ||
3846 | for (;;) | |
3847 | { | |
8fc541d3 | 3848 | char ch; |
a8b3b0b6 | 3849 | |
f2449db4 RS |
3850 | d = DECL_NONE; |
3851 | gfc_gobble_whitespace (); | |
3852 | ||
8fc541d3 | 3853 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
3854 | if (ch == ':') |
3855 | { | |
3856 | /* This is the successful exit condition for the loop. */ | |
8fc541d3 | 3857 | if (gfc_next_ascii_char () == ':') |
f2449db4 RS |
3858 | break; |
3859 | } | |
3860 | else if (ch == ',') | |
a8b3b0b6 | 3861 | { |
a8b3b0b6 | 3862 | gfc_gobble_whitespace (); |
8fc541d3 | 3863 | switch (gfc_peek_ascii_char ()) |
a8b3b0b6 | 3864 | { |
f2449db4 | 3865 | case 'a': |
1eee5628 TB |
3866 | gfc_next_ascii_char (); |
3867 | switch (gfc_next_ascii_char ()) | |
3868 | { | |
3869 | case 'l': | |
3870 | if (match_string_p ("locatable")) | |
3871 | { | |
3872 | /* Matched "allocatable". */ | |
3873 | d = DECL_ALLOCATABLE; | |
3874 | } | |
3875 | break; | |
3876 | ||
3877 | case 's': | |
3878 | if (match_string_p ("ynchronous")) | |
3879 | { | |
3880 | /* Matched "asynchronous". */ | |
3881 | d = DECL_ASYNCHRONOUS; | |
3882 | } | |
3883 | break; | |
34d567d1 FR |
3884 | |
3885 | case 'u': | |
3886 | if (match_string_p ("tomatic")) | |
3887 | { | |
3888 | /* Matched "automatic". */ | |
3889 | d = DECL_AUTOMATIC; | |
3890 | } | |
3891 | break; | |
1eee5628 | 3892 | } |
fe4e525c | 3893 | break; |
f2449db4 RS |
3894 | |
3895 | case 'b': | |
a8b3b0b6 | 3896 | /* Try and match the bind(c). */ |
1eabf70a | 3897 | m = gfc_match_bind_c (NULL, true); |
129d15a3 | 3898 | if (m == MATCH_YES) |
a8b3b0b6 | 3899 | d = DECL_IS_BIND_C; |
129d15a3 JW |
3900 | else if (m == MATCH_ERROR) |
3901 | goto cleanup; | |
f2449db4 RS |
3902 | break; |
3903 | ||
be59db2d | 3904 | case 'c': |
fe4e525c TB |
3905 | gfc_next_ascii_char (); |
3906 | if ('o' != gfc_next_ascii_char ()) | |
3907 | break; | |
3908 | switch (gfc_next_ascii_char ()) | |
3909 | { | |
3910 | case 'd': | |
3911 | if (match_string_p ("imension")) | |
3912 | { | |
3913 | d = DECL_CODIMENSION; | |
3914 | break; | |
3915 | } | |
191816a3 | 3916 | /* FALLTHRU */ |
fe4e525c TB |
3917 | case 'n': |
3918 | if (match_string_p ("tiguous")) | |
3919 | { | |
3920 | d = DECL_CONTIGUOUS; | |
3921 | break; | |
3922 | } | |
3923 | } | |
be59db2d TB |
3924 | break; |
3925 | ||
f2449db4 RS |
3926 | case 'd': |
3927 | if (match_string_p ("dimension")) | |
3928 | d = DECL_DIMENSION; | |
3929 | break; | |
3930 | ||
3931 | case 'e': | |
3932 | if (match_string_p ("external")) | |
3933 | d = DECL_EXTERNAL; | |
3934 | break; | |
3935 | ||
3936 | case 'i': | |
3937 | if (match_string_p ("int")) | |
3938 | { | |
8fc541d3 | 3939 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
3940 | if (ch == 'e') |
3941 | { | |
3942 | if (match_string_p ("nt")) | |
3943 | { | |
3944 | /* Matched "intent". */ | |
3945 | /* TODO: Call match_intent_spec from here. */ | |
3946 | if (gfc_match (" ( in out )") == MATCH_YES) | |
3947 | d = DECL_INOUT; | |
3948 | else if (gfc_match (" ( in )") == MATCH_YES) | |
3949 | d = DECL_IN; | |
3950 | else if (gfc_match (" ( out )") == MATCH_YES) | |
3951 | d = DECL_OUT; | |
3952 | } | |
3953 | } | |
3954 | else if (ch == 'r') | |
3955 | { | |
3956 | if (match_string_p ("insic")) | |
3957 | { | |
3958 | /* Matched "intrinsic". */ | |
3959 | d = DECL_INTRINSIC; | |
3960 | } | |
3961 | } | |
3962 | } | |
3963 | break; | |
3964 | ||
3965 | case 'o': | |
3966 | if (match_string_p ("optional")) | |
3967 | d = DECL_OPTIONAL; | |
3968 | break; | |
3969 | ||
3970 | case 'p': | |
8fc541d3 FXC |
3971 | gfc_next_ascii_char (); |
3972 | switch (gfc_next_ascii_char ()) | |
f2449db4 RS |
3973 | { |
3974 | case 'a': | |
3975 | if (match_string_p ("rameter")) | |
3976 | { | |
3977 | /* Matched "parameter". */ | |
3978 | d = DECL_PARAMETER; | |
3979 | } | |
3980 | break; | |
3981 | ||
3982 | case 'o': | |
3983 | if (match_string_p ("inter")) | |
3984 | { | |
3985 | /* Matched "pointer". */ | |
3986 | d = DECL_POINTER; | |
3987 | } | |
3988 | break; | |
3989 | ||
3990 | case 'r': | |
8fc541d3 | 3991 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
3992 | if (ch == 'i') |
3993 | { | |
3994 | if (match_string_p ("vate")) | |
3995 | { | |
3996 | /* Matched "private". */ | |
3997 | d = DECL_PRIVATE; | |
3998 | } | |
3999 | } | |
4000 | else if (ch == 'o') | |
4001 | { | |
4002 | if (match_string_p ("tected")) | |
4003 | { | |
4004 | /* Matched "protected". */ | |
4005 | d = DECL_PROTECTED; | |
4006 | } | |
4007 | } | |
4008 | break; | |
4009 | ||
4010 | case 'u': | |
4011 | if (match_string_p ("blic")) | |
4012 | { | |
4013 | /* Matched "public". */ | |
4014 | d = DECL_PUBLIC; | |
4015 | } | |
4016 | break; | |
4017 | } | |
4018 | break; | |
4019 | ||
4020 | case 's': | |
34d567d1 FR |
4021 | gfc_next_ascii_char (); |
4022 | switch (gfc_next_ascii_char ()) | |
4023 | { | |
4024 | case 'a': | |
4025 | if (match_string_p ("ve")) | |
4026 | { | |
4027 | /* Matched "save". */ | |
4028 | d = DECL_SAVE; | |
4029 | } | |
4030 | break; | |
4031 | ||
4032 | case 't': | |
4033 | if (match_string_p ("atic")) | |
4034 | { | |
4035 | /* Matched "static". */ | |
4036 | d = DECL_STATIC; | |
4037 | } | |
4038 | break; | |
4039 | } | |
f2449db4 RS |
4040 | break; |
4041 | ||
4042 | case 't': | |
4043 | if (match_string_p ("target")) | |
4044 | d = DECL_TARGET; | |
4045 | break; | |
4046 | ||
4047 | case 'v': | |
8fc541d3 FXC |
4048 | gfc_next_ascii_char (); |
4049 | ch = gfc_next_ascii_char (); | |
f2449db4 RS |
4050 | if (ch == 'a') |
4051 | { | |
4052 | if (match_string_p ("lue")) | |
4053 | { | |
4054 | /* Matched "value". */ | |
4055 | d = DECL_VALUE; | |
4056 | } | |
4057 | } | |
4058 | else if (ch == 'o') | |
4059 | { | |
4060 | if (match_string_p ("latile")) | |
4061 | { | |
4062 | /* Matched "volatile". */ | |
4063 | d = DECL_VOLATILE; | |
4064 | } | |
4065 | } | |
4066 | break; | |
a8b3b0b6 CR |
4067 | } |
4068 | } | |
d468bcdb | 4069 | |
f2449db4 RS |
4070 | /* No double colon and no recognizable decl_type, so assume that |
4071 | we've been looking at something else the whole time. */ | |
4072 | if (d == DECL_NONE) | |
4073 | { | |
4074 | m = MATCH_NO; | |
4075 | goto cleanup; | |
4076 | } | |
d51347f9 | 4077 | |
acb388a0 JD |
4078 | /* Check to make sure any parens are paired up correctly. */ |
4079 | if (gfc_match_parens () == MATCH_ERROR) | |
4080 | { | |
4081 | m = MATCH_ERROR; | |
4082 | goto cleanup; | |
4083 | } | |
4084 | ||
6de9cd9a | 4085 | seen[d]++; |
63645982 | 4086 | seen_at[d] = gfc_current_locus; |
6de9cd9a | 4087 | |
d3a9eea2 | 4088 | if (d == DECL_DIMENSION || d == DECL_CODIMENSION) |
6de9cd9a | 4089 | { |
d3a9eea2 | 4090 | gfc_array_spec *as = NULL; |
6de9cd9a | 4091 | |
d3a9eea2 TB |
4092 | m = gfc_match_array_spec (&as, d == DECL_DIMENSION, |
4093 | d == DECL_CODIMENSION); | |
4094 | ||
4095 | if (current_as == NULL) | |
4096 | current_as = as; | |
4097 | else if (m == MATCH_YES) | |
6de9cd9a | 4098 | { |
524af0d6 | 4099 | if (!merge_array_spec (as, current_as, false)) |
63fbf586 | 4100 | m = MATCH_ERROR; |
cede9502 | 4101 | free (as); |
6de9cd9a DN |
4102 | } |
4103 | ||
be59db2d TB |
4104 | if (m == MATCH_NO) |
4105 | { | |
d3a9eea2 TB |
4106 | if (d == DECL_CODIMENSION) |
4107 | gfc_error ("Missing codimension specification at %C"); | |
4108 | else | |
4109 | gfc_error ("Missing dimension specification at %C"); | |
be59db2d TB |
4110 | m = MATCH_ERROR; |
4111 | } | |
4112 | ||
4113 | if (m == MATCH_ERROR) | |
4114 | goto cleanup; | |
4115 | } | |
6de9cd9a DN |
4116 | } |
4117 | ||
6de9cd9a DN |
4118 | /* Since we've seen a double colon, we have to be looking at an |
4119 | attr-spec. This means that we can now issue errors. */ | |
4120 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
4121 | if (seen[d] > 1) | |
4122 | { | |
4123 | switch (d) | |
4124 | { | |
4125 | case DECL_ALLOCATABLE: | |
4126 | attr = "ALLOCATABLE"; | |
4127 | break; | |
1eee5628 TB |
4128 | case DECL_ASYNCHRONOUS: |
4129 | attr = "ASYNCHRONOUS"; | |
4130 | break; | |
be59db2d TB |
4131 | case DECL_CODIMENSION: |
4132 | attr = "CODIMENSION"; | |
4133 | break; | |
fe4e525c TB |
4134 | case DECL_CONTIGUOUS: |
4135 | attr = "CONTIGUOUS"; | |
4136 | break; | |
6de9cd9a DN |
4137 | case DECL_DIMENSION: |
4138 | attr = "DIMENSION"; | |
4139 | break; | |
4140 | case DECL_EXTERNAL: | |
4141 | attr = "EXTERNAL"; | |
4142 | break; | |
4143 | case DECL_IN: | |
4144 | attr = "INTENT (IN)"; | |
4145 | break; | |
4146 | case DECL_OUT: | |
4147 | attr = "INTENT (OUT)"; | |
4148 | break; | |
4149 | case DECL_INOUT: | |
4150 | attr = "INTENT (IN OUT)"; | |
4151 | break; | |
4152 | case DECL_INTRINSIC: | |
4153 | attr = "INTRINSIC"; | |
4154 | break; | |
4155 | case DECL_OPTIONAL: | |
4156 | attr = "OPTIONAL"; | |
4157 | break; | |
4158 | case DECL_PARAMETER: | |
4159 | attr = "PARAMETER"; | |
4160 | break; | |
4161 | case DECL_POINTER: | |
4162 | attr = "POINTER"; | |
4163 | break; | |
ee7e677f TB |
4164 | case DECL_PROTECTED: |
4165 | attr = "PROTECTED"; | |
4166 | break; | |
6de9cd9a DN |
4167 | case DECL_PRIVATE: |
4168 | attr = "PRIVATE"; | |
4169 | break; | |
4170 | case DECL_PUBLIC: | |
4171 | attr = "PUBLIC"; | |
4172 | break; | |
4173 | case DECL_SAVE: | |
4174 | attr = "SAVE"; | |
4175 | break; | |
34d567d1 FR |
4176 | case DECL_STATIC: |
4177 | attr = "STATIC"; | |
4178 | break; | |
4179 | case DECL_AUTOMATIC: | |
4180 | attr = "AUTOMATIC"; | |
4181 | break; | |
6de9cd9a DN |
4182 | case DECL_TARGET: |
4183 | attr = "TARGET"; | |
4184 | break; | |
a8b3b0b6 CR |
4185 | case DECL_IS_BIND_C: |
4186 | attr = "IS_BIND_C"; | |
4187 | break; | |
4188 | case DECL_VALUE: | |
4189 | attr = "VALUE"; | |
4190 | break; | |
775e6c3a TB |
4191 | case DECL_VOLATILE: |
4192 | attr = "VOLATILE"; | |
4193 | break; | |
6de9cd9a | 4194 | default: |
66e4ab31 | 4195 | attr = NULL; /* This shouldn't happen. */ |
6de9cd9a DN |
4196 | } |
4197 | ||
4198 | gfc_error ("Duplicate %s attribute at %L", attr, &seen_at[d]); | |
4199 | m = MATCH_ERROR; | |
4200 | goto cleanup; | |
4201 | } | |
4202 | ||
4203 | /* Now that we've dealt with duplicate attributes, add the attributes | |
4204 | to the current attribute. */ | |
4205 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
4206 | { | |
4207 | if (seen[d] == 0) | |
4208 | continue; | |
4209 | ||
34d567d1 FR |
4210 | if ((d == DECL_STATIC || d == DECL_AUTOMATIC) |
4211 | && !flag_dec_static) | |
4212 | { | |
4213 | gfc_error ("%s at %L is a DEC extension, enable with -fdec-static", | |
4214 | d == DECL_STATIC ? "STATIC" : "AUTOMATIC", &seen_at[d]); | |
4215 | m = MATCH_ERROR; | |
4216 | goto cleanup; | |
4217 | } | |
4218 | /* Allow SAVE with STATIC, but don't complain. */ | |
4219 | if (d == DECL_STATIC && seen[DECL_SAVE]) | |
4220 | continue; | |
4221 | ||
6de9cd9a | 4222 | if (gfc_current_state () == COMP_DERIVED |
be59db2d TB |
4223 | && d != DECL_DIMENSION && d != DECL_CODIMENSION |
4224 | && d != DECL_POINTER && d != DECL_PRIVATE | |
fe4e525c | 4225 | && d != DECL_PUBLIC && d != DECL_CONTIGUOUS && d != DECL_NONE) |
6de9cd9a | 4226 | { |
5046aff5 PT |
4227 | if (d == DECL_ALLOCATABLE) |
4228 | { | |
524af0d6 JB |
4229 | if (!gfc_notify_std (GFC_STD_F2003, "ALLOCATABLE " |
4230 | "attribute at %C in a TYPE definition")) | |
5046aff5 PT |
4231 | { |
4232 | m = MATCH_ERROR; | |
4233 | goto cleanup; | |
4234 | } | |
636dff67 SK |
4235 | } |
4236 | else | |
5046aff5 PT |
4237 | { |
4238 | gfc_error ("Attribute at %L is not allowed in a TYPE definition", | |
d51347f9 | 4239 | &seen_at[d]); |
5046aff5 PT |
4240 | m = MATCH_ERROR; |
4241 | goto cleanup; | |
4242 | } | |
6de9cd9a DN |
4243 | } |
4244 | ||
4213f93b | 4245 | if ((d == DECL_PRIVATE || d == DECL_PUBLIC) |
636dff67 | 4246 | && gfc_current_state () != COMP_MODULE) |
4213f93b PT |
4247 | { |
4248 | if (d == DECL_PRIVATE) | |
4249 | attr = "PRIVATE"; | |
4250 | else | |
4251 | attr = "PUBLIC"; | |
d51347f9 TB |
4252 | if (gfc_current_state () == COMP_DERIVED |
4253 | && gfc_state_stack->previous | |
4254 | && gfc_state_stack->previous->state == COMP_MODULE) | |
4255 | { | |
524af0d6 | 4256 | if (!gfc_notify_std (GFC_STD_F2003, "Attribute %s " |
70112e2a | 4257 | "at %L in a TYPE definition", attr, |
524af0d6 | 4258 | &seen_at[d])) |
d51347f9 TB |
4259 | { |
4260 | m = MATCH_ERROR; | |
4261 | goto cleanup; | |
4262 | } | |
4263 | } | |
4264 | else | |
4265 | { | |
4266 | gfc_error ("%s attribute at %L is not allowed outside of the " | |
4267 | "specification part of a module", attr, &seen_at[d]); | |
4268 | m = MATCH_ERROR; | |
4269 | goto cleanup; | |
4270 | } | |
4213f93b PT |
4271 | } |
4272 | ||
6de9cd9a DN |
4273 | switch (d) |
4274 | { | |
4275 | case DECL_ALLOCATABLE: | |
4276 | t = gfc_add_allocatable (¤t_attr, &seen_at[d]); | |
4277 | break; | |
4278 | ||
1eee5628 | 4279 | case DECL_ASYNCHRONOUS: |
524af0d6 JB |
4280 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS attribute at %C")) |
4281 | t = false; | |
1eee5628 TB |
4282 | else |
4283 | t = gfc_add_asynchronous (¤t_attr, NULL, &seen_at[d]); | |
4284 | break; | |
4285 | ||
be59db2d TB |
4286 | case DECL_CODIMENSION: |
4287 | t = gfc_add_codimension (¤t_attr, NULL, &seen_at[d]); | |
4288 | break; | |
4289 | ||
fe4e525c | 4290 | case DECL_CONTIGUOUS: |
524af0d6 JB |
4291 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS attribute at %C")) |
4292 | t = false; | |
fe4e525c TB |
4293 | else |
4294 | t = gfc_add_contiguous (¤t_attr, NULL, &seen_at[d]); | |
4295 | break; | |
4296 | ||
6de9cd9a | 4297 | case DECL_DIMENSION: |
231b2fcc | 4298 | t = gfc_add_dimension (¤t_attr, NULL, &seen_at[d]); |
6de9cd9a DN |
4299 | break; |
4300 | ||
4301 | case DECL_EXTERNAL: | |
4302 | t = gfc_add_external (¤t_attr, &seen_at[d]); | |
4303 | break; | |
4304 | ||
4305 | case DECL_IN: | |
4306 | t = gfc_add_intent (¤t_attr, INTENT_IN, &seen_at[d]); | |
4307 | break; | |
4308 | ||
4309 | case DECL_OUT: | |
4310 | t = gfc_add_intent (¤t_attr, INTENT_OUT, &seen_at[d]); | |
4311 | break; | |
4312 | ||
4313 | case DECL_INOUT: | |
4314 | t = gfc_add_intent (¤t_attr, INTENT_INOUT, &seen_at[d]); | |
4315 | break; | |
4316 | ||
4317 | case DECL_INTRINSIC: | |
4318 | t = gfc_add_intrinsic (¤t_attr, &seen_at[d]); | |
4319 | break; | |
4320 | ||
4321 | case DECL_OPTIONAL: | |
4322 | t = gfc_add_optional (¤t_attr, &seen_at[d]); | |
4323 | break; | |
4324 | ||
4325 | case DECL_PARAMETER: | |
231b2fcc | 4326 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, &seen_at[d]); |
6de9cd9a DN |
4327 | break; |
4328 | ||
4329 | case DECL_POINTER: | |
4330 | t = gfc_add_pointer (¤t_attr, &seen_at[d]); | |
4331 | break; | |
4332 | ||
ee7e677f | 4333 | case DECL_PROTECTED: |
721be0f4 SK |
4334 | if (gfc_current_state () != COMP_MODULE |
4335 | || (gfc_current_ns->proc_name | |
4336 | && gfc_current_ns->proc_name->attr.flavor != FL_MODULE)) | |
ee7e677f TB |
4337 | { |
4338 | gfc_error ("PROTECTED at %C only allowed in specification " | |
4339 | "part of a module"); | |
524af0d6 | 4340 | t = false; |
ee7e677f TB |
4341 | break; |
4342 | } | |
4343 | ||
524af0d6 JB |
4344 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED attribute at %C")) |
4345 | t = false; | |
ee7e677f TB |
4346 | else |
4347 | t = gfc_add_protected (¤t_attr, NULL, &seen_at[d]); | |
4348 | break; | |
4349 | ||
6de9cd9a | 4350 | case DECL_PRIVATE: |
231b2fcc TS |
4351 | t = gfc_add_access (¤t_attr, ACCESS_PRIVATE, NULL, |
4352 | &seen_at[d]); | |
6de9cd9a DN |
4353 | break; |
4354 | ||
4355 | case DECL_PUBLIC: | |
231b2fcc TS |
4356 | t = gfc_add_access (¤t_attr, ACCESS_PUBLIC, NULL, |
4357 | &seen_at[d]); | |
6de9cd9a DN |
4358 | break; |
4359 | ||
34d567d1 | 4360 | case DECL_STATIC: |
6de9cd9a | 4361 | case DECL_SAVE: |
80f95228 | 4362 | t = gfc_add_save (¤t_attr, SAVE_EXPLICIT, NULL, &seen_at[d]); |
6de9cd9a DN |
4363 | break; |
4364 | ||
34d567d1 FR |
4365 | case DECL_AUTOMATIC: |
4366 | t = gfc_add_automatic (¤t_attr, NULL, &seen_at[d]); | |
4367 | break; | |
4368 | ||
6de9cd9a DN |
4369 | case DECL_TARGET: |
4370 | t = gfc_add_target (¤t_attr, &seen_at[d]); | |
4371 | break; | |
4372 | ||
a8b3b0b6 CR |
4373 | case DECL_IS_BIND_C: |
4374 | t = gfc_add_is_bind_c(¤t_attr, NULL, &seen_at[d], 0); | |
4375 | break; | |
f5acf0f2 | 4376 | |
06469efd | 4377 | case DECL_VALUE: |
524af0d6 JB |
4378 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE attribute at %C")) |
4379 | t = false; | |
06469efd PT |
4380 | else |
4381 | t = gfc_add_value (¤t_attr, NULL, &seen_at[d]); | |
4382 | break; | |
4383 | ||
775e6c3a | 4384 | case DECL_VOLATILE: |
524af0d6 JB |
4385 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE attribute at %C")) |
4386 | t = false; | |
775e6c3a TB |
4387 | else |
4388 | t = gfc_add_volatile (¤t_attr, NULL, &seen_at[d]); | |
4389 | break; | |
4390 | ||
6de9cd9a DN |
4391 | default: |
4392 | gfc_internal_error ("match_attr_spec(): Bad attribute"); | |
4393 | } | |
4394 | ||
524af0d6 | 4395 | if (!t) |
6de9cd9a DN |
4396 | { |
4397 | m = MATCH_ERROR; | |
4398 | goto cleanup; | |
4399 | } | |
4400 | } | |
4401 | ||
dab2cbf8 | 4402 | /* Since Fortran 2008 module variables implicitly have the SAVE attribute. */ |
4668d6f9 PT |
4403 | if ((gfc_current_state () == COMP_MODULE |
4404 | || gfc_current_state () == COMP_SUBMODULE) | |
4405 | && !current_attr.save | |
dab2cbf8 | 4406 | && (gfc_option.allow_std & GFC_STD_F2008) != 0) |
80f95228 JW |
4407 | current_attr.save = SAVE_IMPLICIT; |
4408 | ||
6de9cd9a DN |
4409 | colon_seen = 1; |
4410 | return MATCH_YES; | |
4411 | ||
4412 | cleanup: | |
63645982 | 4413 | gfc_current_locus = start; |
6de9cd9a DN |
4414 | gfc_free_array_spec (current_as); |
4415 | current_as = NULL; | |
4416 | return m; | |
4417 | } | |
4418 | ||
4419 | ||
a8b3b0b6 CR |
4420 | /* Set the binding label, dest_label, either with the binding label |
4421 | stored in the given gfc_typespec, ts, or if none was provided, it | |
4422 | will be the symbol name in all lower case, as required by the draft | |
4423 | (J3/04-007, section 15.4.1). If a binding label was given and | |
4424 | there is more than one argument (num_idents), it is an error. */ | |
4425 | ||
524af0d6 | 4426 | static bool |
f5acf0f2 | 4427 | set_binding_label (const char **dest_label, const char *sym_name, |
9975a30b | 4428 | int num_idents) |
a8b3b0b6 | 4429 | { |
ad4a2f64 | 4430 | if (num_idents > 1 && has_name_equals) |
a8b3b0b6 | 4431 | { |
ad4a2f64 TB |
4432 | gfc_error ("Multiple identifiers provided with " |
4433 | "single NAME= specifier at %C"); | |
524af0d6 | 4434 | return false; |
ad4a2f64 | 4435 | } |
a8b3b0b6 | 4436 | |
62603fae | 4437 | if (curr_binding_label) |
eea58adb | 4438 | /* Binding label given; store in temp holder till have sym. */ |
62603fae | 4439 | *dest_label = curr_binding_label; |
a8b3b0b6 CR |
4440 | else |
4441 | { | |
4442 | /* No binding label given, and the NAME= specifier did not exist, | |
4443 | which means there was no NAME="". */ | |
4444 | if (sym_name != NULL && has_name_equals == 0) | |
62603fae | 4445 | *dest_label = IDENTIFIER_POINTER (get_identifier (sym_name)); |
a8b3b0b6 | 4446 | } |
f5acf0f2 | 4447 | |
524af0d6 | 4448 | return true; |
a8b3b0b6 CR |
4449 | } |
4450 | ||
4451 | ||
4452 | /* Set the status of the given common block as being BIND(C) or not, | |
4453 | depending on the given parameter, is_bind_c. */ | |
4454 | ||
4455 | void | |
4456 | set_com_block_bind_c (gfc_common_head *com_block, int is_bind_c) | |
4457 | { | |
4458 | com_block->is_bind_c = is_bind_c; | |
4459 | return; | |
4460 | } | |
4461 | ||
4462 | ||
4463 | /* Verify that the given gfc_typespec is for a C interoperable type. */ | |
4464 | ||
524af0d6 | 4465 | bool |
00820a2a | 4466 | gfc_verify_c_interop (gfc_typespec *ts) |
a8b3b0b6 | 4467 | { |
bc21d315 | 4468 | if (ts->type == BT_DERIVED && ts->u.derived != NULL) |
ba3721c1 | 4469 | return (ts->u.derived->ts.is_c_interop || ts->u.derived->attr.is_bind_c) |
524af0d6 | 4470 | ? true : false; |
00820a2a | 4471 | else if (ts->type == BT_CLASS) |
524af0d6 | 4472 | return false; |
45a69325 | 4473 | else if (ts->is_c_interop != 1 && ts->type != BT_ASSUMED) |
524af0d6 | 4474 | return false; |
45a69325 | 4475 | |
524af0d6 | 4476 | return true; |
a8b3b0b6 CR |
4477 | } |
4478 | ||
4479 | ||
4480 | /* Verify that the variables of a given common block, which has been | |
4481 | defined with the attribute specifier bind(c), to be of a C | |
4482 | interoperable type. Errors will be reported here, if | |
4483 | encountered. */ | |
4484 | ||
524af0d6 | 4485 | bool |
a8b3b0b6 CR |
4486 | verify_com_block_vars_c_interop (gfc_common_head *com_block) |
4487 | { | |
4488 | gfc_symbol *curr_sym = NULL; | |
524af0d6 | 4489 | bool retval = true; |
a8b3b0b6 CR |
4490 | |
4491 | curr_sym = com_block->head; | |
f5acf0f2 | 4492 | |
a8b3b0b6 CR |
4493 | /* Make sure we have at least one symbol. */ |
4494 | if (curr_sym == NULL) | |
4495 | return retval; | |
4496 | ||
4497 | /* Here we know we have a symbol, so we'll execute this loop | |
4498 | at least once. */ | |
4499 | do | |
4500 | { | |
4501 | /* The second to last param, 1, says this is in a common block. */ | |
4502 | retval = verify_bind_c_sym (curr_sym, &(curr_sym->ts), 1, com_block); | |
4503 | curr_sym = curr_sym->common_next; | |
f5acf0f2 | 4504 | } while (curr_sym != NULL); |
a8b3b0b6 CR |
4505 | |
4506 | return retval; | |
4507 | } | |
4508 | ||
4509 | ||
4510 | /* Verify that a given BIND(C) symbol is C interoperable. If it is not, | |
4511 | an appropriate error message is reported. */ | |
4512 | ||
524af0d6 | 4513 | bool |
a8b3b0b6 CR |
4514 | verify_bind_c_sym (gfc_symbol *tmp_sym, gfc_typespec *ts, |
4515 | int is_in_common, gfc_common_head *com_block) | |
4516 | { | |
8327f9c2 | 4517 | bool bind_c_function = false; |
524af0d6 | 4518 | bool retval = true; |
d8fa96e0 | 4519 | |
8327f9c2 TB |
4520 | if (tmp_sym->attr.function && tmp_sym->attr.is_bind_c) |
4521 | bind_c_function = true; | |
4522 | ||
d8fa96e0 CR |
4523 | if (tmp_sym->attr.function && tmp_sym->result != NULL) |
4524 | { | |
4525 | tmp_sym = tmp_sym->result; | |
4526 | /* Make sure it wasn't an implicitly typed result. */ | |
4daa149b | 4527 | if (tmp_sym->attr.implicit_type && warn_c_binding_type) |
d8fa96e0 | 4528 | { |
48749dbc MLI |
4529 | gfc_warning (OPT_Wc_binding_type, |
4530 | "Implicitly declared BIND(C) function %qs at " | |
d8fa96e0 CR |
4531 | "%L may not be C interoperable", tmp_sym->name, |
4532 | &tmp_sym->declared_at); | |
4533 | tmp_sym->ts.f90_type = tmp_sym->ts.type; | |
4534 | /* Mark it as C interoperable to prevent duplicate warnings. */ | |
4535 | tmp_sym->ts.is_c_interop = 1; | |
4536 | tmp_sym->attr.is_c_interop = 1; | |
4537 | } | |
4538 | } | |
8327f9c2 | 4539 | |
a8b3b0b6 CR |
4540 | /* Here, we know we have the bind(c) attribute, so if we have |
4541 | enough type info, then verify that it's a C interop kind. | |
4542 | The info could be in the symbol already, or possibly still in | |
4543 | the given ts (current_ts), so look in both. */ | |
f5acf0f2 | 4544 | if (tmp_sym->ts.type != BT_UNKNOWN || ts->type != BT_UNKNOWN) |
a8b3b0b6 | 4545 | { |
524af0d6 | 4546 | if (!gfc_verify_c_interop (&(tmp_sym->ts))) |
a8b3b0b6 CR |
4547 | { |
4548 | /* See if we're dealing with a sym in a common block or not. */ | |
4daa149b | 4549 | if (is_in_common == 1 && warn_c_binding_type) |
a8b3b0b6 | 4550 | { |
48749dbc MLI |
4551 | gfc_warning (OPT_Wc_binding_type, |
4552 | "Variable %qs in common block %qs at %L " | |
a8b3b0b6 | 4553 | "may not be a C interoperable " |
48749dbc | 4554 | "kind though common block %qs is BIND(C)", |
a8b3b0b6 CR |
4555 | tmp_sym->name, com_block->name, |
4556 | &(tmp_sym->declared_at), com_block->name); | |
4557 | } | |
4558 | else | |
4559 | { | |
4560 | if (tmp_sym->ts.type == BT_DERIVED || ts->type == BT_DERIVED) | |
c4100eae | 4561 | gfc_error ("Type declaration %qs at %L is not C " |
a8b3b0b6 CR |
4562 | "interoperable but it is BIND(C)", |
4563 | tmp_sym->name, &(tmp_sym->declared_at)); | |
4daa149b | 4564 | else if (warn_c_binding_type) |
48749dbc | 4565 | gfc_warning (OPT_Wc_binding_type, "Variable %qs at %L " |
a8b3b0b6 | 4566 | "may not be a C interoperable " |
c4100eae | 4567 | "kind but it is BIND(C)", |
a8b3b0b6 CR |
4568 | tmp_sym->name, &(tmp_sym->declared_at)); |
4569 | } | |
4570 | } | |
f5acf0f2 | 4571 | |
a8b3b0b6 CR |
4572 | /* Variables declared w/in a common block can't be bind(c) |
4573 | since there's no way for C to see these variables, so there's | |
4574 | semantically no reason for the attribute. */ | |
4575 | if (is_in_common == 1 && tmp_sym->attr.is_bind_c == 1) | |
4576 | { | |
c4100eae | 4577 | gfc_error ("Variable %qs in common block %qs at " |
a8b3b0b6 CR |
4578 | "%L cannot be declared with BIND(C) " |
4579 | "since it is not a global", | |
4580 | tmp_sym->name, com_block->name, | |
4581 | &(tmp_sym->declared_at)); | |
524af0d6 | 4582 | retval = false; |
a8b3b0b6 | 4583 | } |
f5acf0f2 | 4584 | |
a8b3b0b6 CR |
4585 | /* Scalar variables that are bind(c) can not have the pointer |
4586 | or allocatable attributes. */ | |
4587 | if (tmp_sym->attr.is_bind_c == 1) | |
4588 | { | |
4589 | if (tmp_sym->attr.pointer == 1) | |
4590 | { | |
c4100eae | 4591 | gfc_error ("Variable %qs at %L cannot have both the " |
a8b3b0b6 CR |
4592 | "POINTER and BIND(C) attributes", |
4593 | tmp_sym->name, &(tmp_sym->declared_at)); | |
524af0d6 | 4594 | retval = false; |
a8b3b0b6 CR |
4595 | } |
4596 | ||
4597 | if (tmp_sym->attr.allocatable == 1) | |
4598 | { | |
c4100eae | 4599 | gfc_error ("Variable %qs at %L cannot have both the " |
a8b3b0b6 CR |
4600 | "ALLOCATABLE and BIND(C) attributes", |
4601 | tmp_sym->name, &(tmp_sym->declared_at)); | |
524af0d6 | 4602 | retval = false; |
a8b3b0b6 CR |
4603 | } |
4604 | ||
8327f9c2 TB |
4605 | } |
4606 | ||
4607 | /* If it is a BIND(C) function, make sure the return value is a | |
4608 | scalar value. The previous tests in this function made sure | |
4609 | the type is interoperable. */ | |
4610 | if (bind_c_function && tmp_sym->as != NULL) | |
c4100eae | 4611 | gfc_error ("Return type of BIND(C) function %qs at %L cannot " |
8327f9c2 TB |
4612 | "be an array", tmp_sym->name, &(tmp_sym->declared_at)); |
4613 | ||
4614 | /* BIND(C) functions can not return a character string. */ | |
4615 | if (bind_c_function && tmp_sym->ts.type == BT_CHARACTER) | |
bc21d315 JW |
4616 | if (tmp_sym->ts.u.cl == NULL || tmp_sym->ts.u.cl->length == NULL |
4617 | || tmp_sym->ts.u.cl->length->expr_type != EXPR_CONSTANT | |
4618 | || mpz_cmp_si (tmp_sym->ts.u.cl->length->value.integer, 1) != 0) | |
c4100eae | 4619 | gfc_error ("Return type of BIND(C) function %qs at %L cannot " |
a8b3b0b6 CR |
4620 | "be a character string", tmp_sym->name, |
4621 | &(tmp_sym->declared_at)); | |
a8b3b0b6 CR |
4622 | } |
4623 | ||
4624 | /* See if the symbol has been marked as private. If it has, make sure | |
4625 | there is no binding label and warn the user if there is one. */ | |
4626 | if (tmp_sym->attr.access == ACCESS_PRIVATE | |
62603fae | 4627 | && tmp_sym->binding_label) |
a8b3b0b6 CR |
4628 | /* Use gfc_warning_now because we won't say that the symbol fails |
4629 | just because of this. */ | |
db30e21c | 4630 | gfc_warning_now (0, "Symbol %qs at %L is marked PRIVATE but has been " |
4daa149b | 4631 | "given the binding label %qs", tmp_sym->name, |
a8b3b0b6 CR |
4632 | &(tmp_sym->declared_at), tmp_sym->binding_label); |
4633 | ||
4634 | return retval; | |
4635 | } | |
4636 | ||
4637 | ||
4638 | /* Set the appropriate fields for a symbol that's been declared as | |
4639 | BIND(C) (the is_bind_c flag and the binding label), and verify that | |
4640 | the type is C interoperable. Errors are reported by the functions | |
4641 | used to set/test these fields. */ | |
4642 | ||
524af0d6 | 4643 | bool |
a8b3b0b6 CR |
4644 | set_verify_bind_c_sym (gfc_symbol *tmp_sym, int num_idents) |
4645 | { | |
524af0d6 | 4646 | bool retval = true; |
f5acf0f2 | 4647 | |
a8b3b0b6 CR |
4648 | /* TODO: Do we need to make sure the vars aren't marked private? */ |
4649 | ||
4650 | /* Set the is_bind_c bit in symbol_attribute. */ | |
4651 | gfc_add_is_bind_c (&(tmp_sym->attr), tmp_sym->name, &gfc_current_locus, 0); | |
4652 | ||
524af0d6 JB |
4653 | if (!set_binding_label (&tmp_sym->binding_label, tmp_sym->name, num_idents)) |
4654 | return false; | |
a8b3b0b6 CR |
4655 | |
4656 | return retval; | |
4657 | } | |
4658 | ||
4659 | ||
4660 | /* Set the fields marking the given common block as BIND(C), including | |
4661 | a binding label, and report any errors encountered. */ | |
4662 | ||
524af0d6 | 4663 | bool |
a8b3b0b6 CR |
4664 | set_verify_bind_c_com_block (gfc_common_head *com_block, int num_idents) |
4665 | { | |
524af0d6 | 4666 | bool retval = true; |
f5acf0f2 | 4667 | |
a8b3b0b6 | 4668 | /* destLabel, common name, typespec (which may have binding label). */ |
70112e2a | 4669 | if (!set_binding_label (&com_block->binding_label, com_block->name, |
524af0d6 JB |
4670 | num_idents)) |
4671 | return false; | |
a8b3b0b6 CR |
4672 | |
4673 | /* Set the given common block (com_block) to being bind(c) (1). */ | |
4674 | set_com_block_bind_c (com_block, 1); | |
4675 | ||
4676 | return retval; | |
4677 | } | |
4678 | ||
4679 | ||
4680 | /* Retrieve the list of one or more identifiers that the given bind(c) | |
4681 | attribute applies to. */ | |
4682 | ||
524af0d6 | 4683 | bool |
a8b3b0b6 CR |
4684 | get_bind_c_idents (void) |
4685 | { | |
4686 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4687 | int num_idents = 0; | |
4688 | gfc_symbol *tmp_sym = NULL; | |
4689 | match found_id; | |
4690 | gfc_common_head *com_block = NULL; | |
f5acf0f2 | 4691 | |
a8b3b0b6 CR |
4692 | if (gfc_match_name (name) == MATCH_YES) |
4693 | { | |
4694 | found_id = MATCH_YES; | |
4695 | gfc_get_ha_symbol (name, &tmp_sym); | |
4696 | } | |
4697 | else if (match_common_name (name) == MATCH_YES) | |
4698 | { | |
4699 | found_id = MATCH_YES; | |
4700 | com_block = gfc_get_common (name, 0); | |
4701 | } | |
4702 | else | |
4703 | { | |
4704 | gfc_error ("Need either entity or common block name for " | |
4705 | "attribute specification statement at %C"); | |
524af0d6 | 4706 | return false; |
a8b3b0b6 | 4707 | } |
f5acf0f2 | 4708 | |
a8b3b0b6 CR |
4709 | /* Save the current identifier and look for more. */ |
4710 | do | |
4711 | { | |
4712 | /* Increment the number of identifiers found for this spec stmt. */ | |
4713 | num_idents++; | |
4714 | ||
4715 | /* Make sure we have a sym or com block, and verify that it can | |
4716 | be bind(c). Set the appropriate field(s) and look for more | |
4717 | identifiers. */ | |
f5acf0f2 | 4718 | if (tmp_sym != NULL || com_block != NULL) |
a8b3b0b6 CR |
4719 | { |
4720 | if (tmp_sym != NULL) | |
4721 | { | |
524af0d6 JB |
4722 | if (!set_verify_bind_c_sym (tmp_sym, num_idents)) |
4723 | return false; | |
a8b3b0b6 CR |
4724 | } |
4725 | else | |
4726 | { | |
524af0d6 JB |
4727 | if (!set_verify_bind_c_com_block (com_block, num_idents)) |
4728 | return false; | |
a8b3b0b6 | 4729 | } |
f5acf0f2 | 4730 | |
a8b3b0b6 CR |
4731 | /* Look to see if we have another identifier. */ |
4732 | tmp_sym = NULL; | |
4733 | if (gfc_match_eos () == MATCH_YES) | |
4734 | found_id = MATCH_NO; | |
4735 | else if (gfc_match_char (',') != MATCH_YES) | |
4736 | found_id = MATCH_NO; | |
4737 | else if (gfc_match_name (name) == MATCH_YES) | |
4738 | { | |
4739 | found_id = MATCH_YES; | |
4740 | gfc_get_ha_symbol (name, &tmp_sym); | |
4741 | } | |
4742 | else if (match_common_name (name) == MATCH_YES) | |
4743 | { | |
4744 | found_id = MATCH_YES; | |
4745 | com_block = gfc_get_common (name, 0); | |
4746 | } | |
4747 | else | |
4748 | { | |
4749 | gfc_error ("Missing entity or common block name for " | |
4750 | "attribute specification statement at %C"); | |
524af0d6 | 4751 | return false; |
a8b3b0b6 CR |
4752 | } |
4753 | } | |
4754 | else | |
4755 | { | |
4756 | gfc_internal_error ("Missing symbol"); | |
4757 | } | |
4758 | } while (found_id == MATCH_YES); | |
4759 | ||
4760 | /* if we get here we were successful */ | |
524af0d6 | 4761 | return true; |
a8b3b0b6 CR |
4762 | } |
4763 | ||
4764 | ||
4765 | /* Try and match a BIND(C) attribute specification statement. */ | |
f5acf0f2 | 4766 | |
a8b3b0b6 CR |
4767 | match |
4768 | gfc_match_bind_c_stmt (void) | |
4769 | { | |
4770 | match found_match = MATCH_NO; | |
4771 | gfc_typespec *ts; | |
4772 | ||
4773 | ts = ¤t_ts; | |
f5acf0f2 | 4774 | |
a8b3b0b6 CR |
4775 | /* This may not be necessary. */ |
4776 | gfc_clear_ts (ts); | |
4777 | /* Clear the temporary binding label holder. */ | |
62603fae | 4778 | curr_binding_label = NULL; |
a8b3b0b6 CR |
4779 | |
4780 | /* Look for the bind(c). */ | |
1eabf70a | 4781 | found_match = gfc_match_bind_c (NULL, true); |
a8b3b0b6 CR |
4782 | |
4783 | if (found_match == MATCH_YES) | |
4784 | { | |
878cdb7b TB |
4785 | if (!gfc_notify_std (GFC_STD_F2003, "BIND(C) statement at %C")) |
4786 | return MATCH_ERROR; | |
4787 | ||
a8b3b0b6 CR |
4788 | /* Look for the :: now, but it is not required. */ |
4789 | gfc_match (" :: "); | |
4790 | ||
4791 | /* Get the identifier(s) that needs to be updated. This may need to | |
4792 | change to hand the flag(s) for the attr specified so all identifiers | |
4793 | found can have all appropriate parts updated (assuming that the same | |
4794 | spec stmt can have multiple attrs, such as both bind(c) and | |
4795 | allocatable...). */ | |
524af0d6 | 4796 | if (!get_bind_c_idents ()) |
a8b3b0b6 CR |
4797 | /* Error message should have printed already. */ |
4798 | return MATCH_ERROR; | |
4799 | } | |
4800 | ||
4801 | return found_match; | |
4802 | } | |
4803 | ||
4804 | ||
6de9cd9a DN |
4805 | /* Match a data declaration statement. */ |
4806 | ||
4807 | match | |
4808 | gfc_match_data_decl (void) | |
4809 | { | |
4810 | gfc_symbol *sym; | |
4811 | match m; | |
949d5b72 | 4812 | int elem; |
6de9cd9a | 4813 | |
a8b3b0b6 | 4814 | num_idents_on_line = 0; |
f5acf0f2 | 4815 | |
e74f1cc8 | 4816 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
6de9cd9a DN |
4817 | if (m != MATCH_YES) |
4818 | return m; | |
4819 | ||
2e23972e | 4820 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
f6288c24 | 4821 | && !gfc_comp_struct (gfc_current_state ())) |
6de9cd9a | 4822 | { |
bc21d315 | 4823 | sym = gfc_use_derived (current_ts.u.derived); |
6de9cd9a DN |
4824 | |
4825 | if (sym == NULL) | |
4826 | { | |
4827 | m = MATCH_ERROR; | |
4828 | goto cleanup; | |
4829 | } | |
4830 | ||
bc21d315 | 4831 | current_ts.u.derived = sym; |
6de9cd9a DN |
4832 | } |
4833 | ||
4834 | m = match_attr_spec (); | |
4835 | if (m == MATCH_ERROR) | |
4836 | { | |
4837 | m = MATCH_NO; | |
4838 | goto cleanup; | |
4839 | } | |
4840 | ||
8b704316 PT |
4841 | if (current_ts.type == BT_CLASS |
4842 | && current_ts.u.derived->attr.unlimited_polymorphic) | |
4843 | goto ok; | |
4844 | ||
2e23972e JW |
4845 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
4846 | && current_ts.u.derived->components == NULL | |
bc21d315 | 4847 | && !current_ts.u.derived->attr.zero_comp) |
6de9cd9a DN |
4848 | { |
4849 | ||
f6288c24 | 4850 | if (current_attr.pointer && gfc_comp_struct (gfc_current_state ())) |
6de9cd9a DN |
4851 | goto ok; |
4852 | ||
bf9f15ee PT |
4853 | if (current_attr.allocatable && gfc_current_state () == COMP_DERIVED |
4854 | && current_ts.u.derived == gfc_current_block ()) | |
4855 | goto ok; | |
4856 | ||
bc21d315 | 4857 | gfc_find_symbol (current_ts.u.derived->name, |
dd8b9dde | 4858 | current_ts.u.derived->ns, 1, &sym); |
6de9cd9a | 4859 | |
976e21f6 | 4860 | /* Any symbol that we find had better be a type definition |
f6288c24 FR |
4861 | which has its components defined, or be a structure definition |
4862 | actively being parsed. */ | |
4863 | if (sym != NULL && gfc_fl_struct (sym->attr.flavor) | |
bc21d315 | 4864 | && (current_ts.u.derived->components != NULL |
f6288c24 FR |
4865 | || current_ts.u.derived->attr.zero_comp |
4866 | || current_ts.u.derived == gfc_new_block)) | |
6de9cd9a DN |
4867 | goto ok; |
4868 | ||
a1b80ec7 JW |
4869 | gfc_error ("Derived type at %C has not been previously defined " |
4870 | "and so cannot appear in a derived type definition"); | |
4871 | m = MATCH_ERROR; | |
4872 | goto cleanup; | |
6de9cd9a DN |
4873 | } |
4874 | ||
4875 | ok: | |
4876 | /* If we have an old-style character declaration, and no new-style | |
4877 | attribute specifications, then there a comma is optional between | |
4878 | the type specification and the variable list. */ | |
4879 | if (m == MATCH_NO && current_ts.type == BT_CHARACTER && old_char_selector) | |
4880 | gfc_match_char (','); | |
4881 | ||
949d5b72 PT |
4882 | /* Give the types/attributes to symbols that follow. Give the element |
4883 | a number so that repeat character length expressions can be copied. */ | |
4884 | elem = 1; | |
6de9cd9a DN |
4885 | for (;;) |
4886 | { | |
a8b3b0b6 | 4887 | num_idents_on_line++; |
949d5b72 | 4888 | m = variable_decl (elem++); |
6de9cd9a DN |
4889 | if (m == MATCH_ERROR) |
4890 | goto cleanup; | |
4891 | if (m == MATCH_NO) | |
4892 | break; | |
4893 | ||
4894 | if (gfc_match_eos () == MATCH_YES) | |
4895 | goto cleanup; | |
4896 | if (gfc_match_char (',') != MATCH_YES) | |
4897 | break; | |
4898 | } | |
4899 | ||
0f447a6e | 4900 | if (!gfc_error_flag_test ()) |
94903212 FR |
4901 | { |
4902 | /* An anonymous structure declaration is unambiguous; if we matched one | |
4903 | according to gfc_match_structure_decl, we need to return MATCH_YES | |
4904 | here to avoid confusing the remaining matchers, even if there was an | |
4905 | error during variable_decl. We must flush any such errors. Note this | |
4906 | causes the parser to gracefully continue parsing the remaining input | |
4907 | as a structure body, which likely follows. */ | |
4908 | if (current_ts.type == BT_DERIVED && current_ts.u.derived | |
4909 | && gfc_fl_struct (current_ts.u.derived->attr.flavor)) | |
4910 | { | |
4911 | gfc_error_now ("Syntax error in anonymous structure declaration" | |
4912 | " at %C"); | |
4913 | /* Skip the bad variable_decl and line up for the start of the | |
4914 | structure body. */ | |
4915 | gfc_error_recovery (); | |
4916 | m = MATCH_YES; | |
4917 | goto cleanup; | |
4918 | } | |
4919 | ||
4920 | gfc_error ("Syntax error in data declaration at %C"); | |
4921 | } | |
4922 | ||
6de9cd9a DN |
4923 | m = MATCH_ERROR; |
4924 | ||
a9f6f1f2 JD |
4925 | gfc_free_data_all (gfc_current_ns); |
4926 | ||
6de9cd9a DN |
4927 | cleanup: |
4928 | gfc_free_array_spec (current_as); | |
4929 | current_as = NULL; | |
4930 | return m; | |
4931 | } | |
4932 | ||
4933 | ||
4934 | /* Match a prefix associated with a function or subroutine | |
4935 | declaration. If the typespec pointer is nonnull, then a typespec | |
4936 | can be matched. Note that if nothing matches, MATCH_YES is | |
4937 | returned (the null string was matched). */ | |
4938 | ||
1c8bcdf7 PT |
4939 | match |
4940 | gfc_match_prefix (gfc_typespec *ts) | |
6de9cd9a | 4941 | { |
7389bce6 | 4942 | bool seen_type; |
e6c14898 DK |
4943 | bool seen_impure; |
4944 | bool found_prefix; | |
6de9cd9a DN |
4945 | |
4946 | gfc_clear_attr (¤t_attr); | |
e6c14898 DK |
4947 | seen_type = false; |
4948 | seen_impure = false; | |
6de9cd9a | 4949 | |
3df684e2 DK |
4950 | gcc_assert (!gfc_matching_prefix); |
4951 | gfc_matching_prefix = true; | |
f37e928c | 4952 | |
e6c14898 | 4953 | do |
6de9cd9a | 4954 | { |
e6c14898 | 4955 | found_prefix = false; |
6de9cd9a | 4956 | |
70112e2a PT |
4957 | /* MODULE is a prefix like PURE, ELEMENTAL, etc., having a |
4958 | corresponding attribute seems natural and distinguishes these | |
4959 | procedures from procedure types of PROC_MODULE, which these are | |
4960 | as well. */ | |
4961 | if (gfc_match ("module% ") == MATCH_YES) | |
4962 | { | |
4963 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE prefix at %C")) | |
4964 | goto error; | |
4965 | ||
4966 | current_attr.module_procedure = 1; | |
4967 | found_prefix = true; | |
4968 | } | |
4969 | ||
e6c14898 DK |
4970 | if (!seen_type && ts != NULL |
4971 | && gfc_match_decl_type_spec (ts, 0) == MATCH_YES | |
4972 | && gfc_match_space () == MATCH_YES) | |
4973 | { | |
6de9cd9a | 4974 | |
e6c14898 DK |
4975 | seen_type = true; |
4976 | found_prefix = true; | |
4977 | } | |
4978 | ||
4979 | if (gfc_match ("elemental% ") == MATCH_YES) | |
4980 | { | |
524af0d6 | 4981 | if (!gfc_add_elemental (¤t_attr, NULL)) |
e6c14898 DK |
4982 | goto error; |
4983 | ||
4984 | found_prefix = true; | |
4985 | } | |
4986 | ||
4987 | if (gfc_match ("pure% ") == MATCH_YES) | |
4988 | { | |
524af0d6 | 4989 | if (!gfc_add_pure (¤t_attr, NULL)) |
e6c14898 DK |
4990 | goto error; |
4991 | ||
4992 | found_prefix = true; | |
4993 | } | |
6de9cd9a | 4994 | |
e6c14898 DK |
4995 | if (gfc_match ("recursive% ") == MATCH_YES) |
4996 | { | |
524af0d6 | 4997 | if (!gfc_add_recursive (¤t_attr, NULL)) |
e6c14898 DK |
4998 | goto error; |
4999 | ||
5000 | found_prefix = true; | |
5001 | } | |
5002 | ||
5003 | /* IMPURE is a somewhat special case, as it needs not set an actual | |
5004 | attribute but rather only prevents ELEMENTAL routines from being | |
5005 | automatically PURE. */ | |
5006 | if (gfc_match ("impure% ") == MATCH_YES) | |
5007 | { | |
524af0d6 | 5008 | if (!gfc_notify_std (GFC_STD_F2008, "IMPURE procedure at %C")) |
e6c14898 DK |
5009 | goto error; |
5010 | ||
5011 | seen_impure = true; | |
5012 | found_prefix = true; | |
5013 | } | |
6de9cd9a | 5014 | } |
e6c14898 | 5015 | while (found_prefix); |
6de9cd9a | 5016 | |
e6c14898 DK |
5017 | /* IMPURE and PURE must not both appear, of course. */ |
5018 | if (seen_impure && current_attr.pure) | |
6de9cd9a | 5019 | { |
e6c14898 DK |
5020 | gfc_error ("PURE and IMPURE must not appear both at %C"); |
5021 | goto error; | |
6de9cd9a DN |
5022 | } |
5023 | ||
e6c14898 DK |
5024 | /* If IMPURE it not seen but the procedure is ELEMENTAL, mark it as PURE. */ |
5025 | if (!seen_impure && current_attr.elemental && !current_attr.pure) | |
6de9cd9a | 5026 | { |
524af0d6 | 5027 | if (!gfc_add_pure (¤t_attr, NULL)) |
f37e928c | 5028 | goto error; |
6de9cd9a DN |
5029 | } |
5030 | ||
5031 | /* At this point, the next item is not a prefix. */ | |
3df684e2 | 5032 | gcc_assert (gfc_matching_prefix); |
4668d6f9 | 5033 | |
3df684e2 | 5034 | gfc_matching_prefix = false; |
6de9cd9a | 5035 | return MATCH_YES; |
f37e928c DK |
5036 | |
5037 | error: | |
3df684e2 DK |
5038 | gcc_assert (gfc_matching_prefix); |
5039 | gfc_matching_prefix = false; | |
f37e928c | 5040 | return MATCH_ERROR; |
6de9cd9a DN |
5041 | } |
5042 | ||
5043 | ||
1c8bcdf7 | 5044 | /* Copy attributes matched by gfc_match_prefix() to attributes on a symbol. */ |
6de9cd9a | 5045 | |
524af0d6 | 5046 | static bool |
636dff67 | 5047 | copy_prefix (symbol_attribute *dest, locus *where) |
6de9cd9a | 5048 | { |
6442a6f4 PT |
5049 | if (dest->module_procedure) |
5050 | { | |
5051 | if (current_attr.elemental) | |
5052 | dest->elemental = 1; | |
5053 | ||
5054 | if (current_attr.pure) | |
5055 | dest->pure = 1; | |
5056 | ||
5057 | if (current_attr.recursive) | |
5058 | dest->recursive = 1; | |
5059 | ||
5060 | /* Module procedures are unusual in that the 'dest' is copied from | |
5061 | the interface declaration. However, this is an oportunity to | |
5062 | check that the submodule declaration is compliant with the | |
5063 | interface. */ | |
5064 | if (dest->elemental && !current_attr.elemental) | |
5065 | { | |
5066 | gfc_error ("ELEMENTAL prefix in MODULE PROCEDURE interface is " | |
5067 | "missing at %L", where); | |
5068 | return false; | |
5069 | } | |
5070 | ||
5071 | if (dest->pure && !current_attr.pure) | |
5072 | { | |
5073 | gfc_error ("PURE prefix in MODULE PROCEDURE interface is " | |
5074 | "missing at %L", where); | |
5075 | return false; | |
5076 | } | |
5077 | ||
5078 | if (dest->recursive && !current_attr.recursive) | |
5079 | { | |
5080 | gfc_error ("RECURSIVE prefix in MODULE PROCEDURE interface is " | |
5081 | "missing at %L", where); | |
5082 | return false; | |
5083 | } | |
5084 | ||
5085 | return true; | |
5086 | } | |
6de9cd9a | 5087 | |
524af0d6 JB |
5088 | if (current_attr.elemental && !gfc_add_elemental (dest, where)) |
5089 | return false; | |
6de9cd9a | 5090 | |
6442a6f4 PT |
5091 | if (current_attr.pure && !gfc_add_pure (dest, where)) |
5092 | return false; | |
5093 | ||
524af0d6 JB |
5094 | if (current_attr.recursive && !gfc_add_recursive (dest, where)) |
5095 | return false; | |
6de9cd9a | 5096 | |
524af0d6 | 5097 | return true; |
6de9cd9a DN |
5098 | } |
5099 | ||
5100 | ||
5101 | /* Match a formal argument list. */ | |
5102 | ||
5103 | match | |
636dff67 | 5104 | gfc_match_formal_arglist (gfc_symbol *progname, int st_flag, int null_flag) |
6de9cd9a DN |
5105 | { |
5106 | gfc_formal_arglist *head, *tail, *p, *q; | |
5107 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5108 | gfc_symbol *sym; | |
5109 | match m; | |
4668d6f9 | 5110 | gfc_formal_arglist *formal = NULL; |
6de9cd9a DN |
5111 | |
5112 | head = tail = NULL; | |
5113 | ||
4668d6f9 PT |
5114 | /* Keep the interface formal argument list and null it so that the |
5115 | matching for the new declaration can be done. The numbers and | |
5116 | names of the arguments are checked here. The interface formal | |
5117 | arguments are retained in formal_arglist and the characteristics | |
5118 | are compared in resolve.c(resolve_fl_procedure). See the remark | |
5119 | in get_proc_name about the eventual need to copy the formal_arglist | |
5120 | and populate the formal namespace of the interface symbol. */ | |
5121 | if (progname->attr.module_procedure | |
5122 | && progname->attr.host_assoc) | |
5123 | { | |
5124 | formal = progname->formal; | |
5125 | progname->formal = NULL; | |
5126 | } | |
5127 | ||
6de9cd9a DN |
5128 | if (gfc_match_char ('(') != MATCH_YES) |
5129 | { | |
5130 | if (null_flag) | |
5131 | goto ok; | |
5132 | return MATCH_NO; | |
5133 | } | |
5134 | ||
5135 | if (gfc_match_char (')') == MATCH_YES) | |
5136 | goto ok; | |
5137 | ||
5138 | for (;;) | |
5139 | { | |
5140 | if (gfc_match_char ('*') == MATCH_YES) | |
9362a03b JW |
5141 | { |
5142 | sym = NULL; | |
524af0d6 JB |
5143 | if (!gfc_notify_std (GFC_STD_F95_OBS, "Alternate-return argument " |
5144 | "at %C")) | |
9362a03b JW |
5145 | { |
5146 | m = MATCH_ERROR; | |
5147 | goto cleanup; | |
5148 | } | |
5149 | } | |
6de9cd9a DN |
5150 | else |
5151 | { | |
5152 | m = gfc_match_name (name); | |
5153 | if (m != MATCH_YES) | |
5154 | goto cleanup; | |
5155 | ||
5156 | if (gfc_get_symbol (name, NULL, &sym)) | |
5157 | goto cleanup; | |
5158 | } | |
5159 | ||
5160 | p = gfc_get_formal_arglist (); | |
5161 | ||
5162 | if (head == NULL) | |
5163 | head = tail = p; | |
5164 | else | |
5165 | { | |
5166 | tail->next = p; | |
5167 | tail = p; | |
5168 | } | |
5169 | ||
5170 | tail->sym = sym; | |
5171 | ||
5172 | /* We don't add the VARIABLE flavor because the name could be a | |
636dff67 SK |
5173 | dummy procedure. We don't apply these attributes to formal |
5174 | arguments of statement functions. */ | |
6de9cd9a | 5175 | if (sym != NULL && !st_flag |
524af0d6 JB |
5176 | && (!gfc_add_dummy(&sym->attr, sym->name, NULL) |
5177 | || !gfc_missing_attr (&sym->attr, NULL))) | |
6de9cd9a DN |
5178 | { |
5179 | m = MATCH_ERROR; | |
5180 | goto cleanup; | |
5181 | } | |
5182 | ||
5183 | /* The name of a program unit can be in a different namespace, | |
636dff67 SK |
5184 | so check for it explicitly. After the statement is accepted, |
5185 | the name is checked for especially in gfc_get_symbol(). */ | |
6de9cd9a DN |
5186 | if (gfc_new_block != NULL && sym != NULL |
5187 | && strcmp (sym->name, gfc_new_block->name) == 0) | |
5188 | { | |
c4100eae | 5189 | gfc_error ("Name %qs at %C is the name of the procedure", |
6de9cd9a DN |
5190 | sym->name); |
5191 | m = MATCH_ERROR; | |
5192 | goto cleanup; | |
5193 | } | |
5194 | ||
5195 | if (gfc_match_char (')') == MATCH_YES) | |
5196 | goto ok; | |
5197 | ||
5198 | m = gfc_match_char (','); | |
5199 | if (m != MATCH_YES) | |
5200 | { | |
5201 | gfc_error ("Unexpected junk in formal argument list at %C"); | |
5202 | goto cleanup; | |
5203 | } | |
5204 | } | |
5205 | ||
5206 | ok: | |
5207 | /* Check for duplicate symbols in the formal argument list. */ | |
5208 | if (head != NULL) | |
5209 | { | |
5210 | for (p = head; p->next; p = p->next) | |
5211 | { | |
5212 | if (p->sym == NULL) | |
5213 | continue; | |
5214 | ||
5215 | for (q = p->next; q; q = q->next) | |
5216 | if (p->sym == q->sym) | |
5217 | { | |
c4100eae | 5218 | gfc_error ("Duplicate symbol %qs in formal argument list " |
636dff67 | 5219 | "at %C", p->sym->name); |
6de9cd9a DN |
5220 | |
5221 | m = MATCH_ERROR; | |
5222 | goto cleanup; | |
5223 | } | |
5224 | } | |
5225 | } | |
5226 | ||
524af0d6 | 5227 | if (!gfc_add_explicit_interface (progname, IFSRC_DECL, head, NULL)) |
6de9cd9a DN |
5228 | { |
5229 | m = MATCH_ERROR; | |
5230 | goto cleanup; | |
5231 | } | |
5232 | ||
e9d9b48d PT |
5233 | /* gfc_error_now used in following and return with MATCH_YES because |
5234 | doing otherwise results in a cascade of extraneous errors and in | |
5235 | some cases an ICE in symbol.c(gfc_release_symbol). */ | |
0ef5fbc1 | 5236 | if (progname->attr.module_procedure && progname->attr.host_assoc) |
4668d6f9 | 5237 | { |
0ef5fbc1 PT |
5238 | bool arg_count_mismatch = false; |
5239 | ||
5240 | if (!formal && head) | |
5241 | arg_count_mismatch = true; | |
5242 | ||
5243 | /* Abbreviated module procedure declaration is not meant to have any | |
5244 | formal arguments! */ | |
e9d9b48d | 5245 | if (!progname->abr_modproc_decl && formal && !head) |
0ef5fbc1 PT |
5246 | arg_count_mismatch = true; |
5247 | ||
4668d6f9 PT |
5248 | for (p = formal, q = head; p && q; p = p->next, q = q->next) |
5249 | { | |
5250 | if ((p->next != NULL && q->next == NULL) | |
5251 | || (p->next == NULL && q->next != NULL)) | |
0ef5fbc1 | 5252 | arg_count_mismatch = true; |
4668d6f9 PT |
5253 | else if ((p->sym == NULL && q->sym == NULL) |
5254 | || strcmp (p->sym->name, q->sym->name) == 0) | |
5255 | continue; | |
5256 | else | |
5257 | gfc_error_now ("Mismatch in MODULE PROCEDURE formal " | |
5258 | "argument names (%s/%s) at %C", | |
5259 | p->sym->name, q->sym->name); | |
5260 | } | |
0ef5fbc1 PT |
5261 | |
5262 | if (arg_count_mismatch) | |
5263 | gfc_error_now ("Mismatch in number of MODULE PROCEDURE " | |
5264 | "formal arguments at %C"); | |
4668d6f9 PT |
5265 | } |
5266 | ||
6de9cd9a DN |
5267 | return MATCH_YES; |
5268 | ||
5269 | cleanup: | |
5270 | gfc_free_formal_arglist (head); | |
5271 | return m; | |
5272 | } | |
5273 | ||
5274 | ||
5275 | /* Match a RESULT specification following a function declaration or | |
5276 | ENTRY statement. Also matches the end-of-statement. */ | |
5277 | ||
5278 | static match | |
66e4ab31 | 5279 | match_result (gfc_symbol *function, gfc_symbol **result) |
6de9cd9a DN |
5280 | { |
5281 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5282 | gfc_symbol *r; | |
5283 | match m; | |
5284 | ||
5285 | if (gfc_match (" result (") != MATCH_YES) | |
5286 | return MATCH_NO; | |
5287 | ||
5288 | m = gfc_match_name (name); | |
5289 | if (m != MATCH_YES) | |
5290 | return m; | |
5291 | ||
a8b3b0b6 CR |
5292 | /* Get the right paren, and that's it because there could be the |
5293 | bind(c) attribute after the result clause. */ | |
524af0d6 | 5294 | if (gfc_match_char (')') != MATCH_YES) |
6de9cd9a | 5295 | { |
a8b3b0b6 | 5296 | /* TODO: should report the missing right paren here. */ |
6de9cd9a DN |
5297 | return MATCH_ERROR; |
5298 | } | |
5299 | ||
5300 | if (strcmp (function->name, name) == 0) | |
5301 | { | |
636dff67 | 5302 | gfc_error ("RESULT variable at %C must be different than function name"); |
6de9cd9a DN |
5303 | return MATCH_ERROR; |
5304 | } | |
5305 | ||
5306 | if (gfc_get_symbol (name, NULL, &r)) | |
5307 | return MATCH_ERROR; | |
5308 | ||
524af0d6 | 5309 | if (!gfc_add_result (&r->attr, r->name, NULL)) |
6de9cd9a DN |
5310 | return MATCH_ERROR; |
5311 | ||
5312 | *result = r; | |
5313 | ||
5314 | return MATCH_YES; | |
5315 | } | |
5316 | ||
5317 | ||
a8b3b0b6 CR |
5318 | /* Match a function suffix, which could be a combination of a result |
5319 | clause and BIND(C), either one, or neither. The draft does not | |
5320 | require them to come in a specific order. */ | |
5321 | ||
5322 | match | |
5323 | gfc_match_suffix (gfc_symbol *sym, gfc_symbol **result) | |
5324 | { | |
5325 | match is_bind_c; /* Found bind(c). */ | |
5326 | match is_result; /* Found result clause. */ | |
5327 | match found_match; /* Status of whether we've found a good match. */ | |
8fc541d3 | 5328 | char peek_char; /* Character we're going to peek at. */ |
1eabf70a | 5329 | bool allow_binding_name; |
a8b3b0b6 CR |
5330 | |
5331 | /* Initialize to having found nothing. */ | |
5332 | found_match = MATCH_NO; | |
f5acf0f2 | 5333 | is_bind_c = MATCH_NO; |
a8b3b0b6 CR |
5334 | is_result = MATCH_NO; |
5335 | ||
5336 | /* Get the next char to narrow between result and bind(c). */ | |
5337 | gfc_gobble_whitespace (); | |
8fc541d3 | 5338 | peek_char = gfc_peek_ascii_char (); |
a8b3b0b6 | 5339 | |
1eabf70a TB |
5340 | /* C binding names are not allowed for internal procedures. */ |
5341 | if (gfc_current_state () == COMP_CONTAINS | |
5342 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
5343 | allow_binding_name = false; | |
5344 | else | |
5345 | allow_binding_name = true; | |
5346 | ||
a8b3b0b6 CR |
5347 | switch (peek_char) |
5348 | { | |
5349 | case 'r': | |
5350 | /* Look for result clause. */ | |
5351 | is_result = match_result (sym, result); | |
5352 | if (is_result == MATCH_YES) | |
5353 | { | |
5354 | /* Now see if there is a bind(c) after it. */ | |
1eabf70a | 5355 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
5356 | /* We've found the result clause and possibly bind(c). */ |
5357 | found_match = MATCH_YES; | |
5358 | } | |
5359 | else | |
5360 | /* This should only be MATCH_ERROR. */ | |
f5acf0f2 | 5361 | found_match = is_result; |
a8b3b0b6 CR |
5362 | break; |
5363 | case 'b': | |
5364 | /* Look for bind(c) first. */ | |
1eabf70a | 5365 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
5366 | if (is_bind_c == MATCH_YES) |
5367 | { | |
5368 | /* Now see if a result clause followed it. */ | |
5369 | is_result = match_result (sym, result); | |
5370 | found_match = MATCH_YES; | |
5371 | } | |
5372 | else | |
5373 | { | |
5374 | /* Should only be a MATCH_ERROR if we get here after seeing 'b'. */ | |
5375 | found_match = MATCH_ERROR; | |
5376 | } | |
5377 | break; | |
5378 | default: | |
5379 | gfc_error ("Unexpected junk after function declaration at %C"); | |
5380 | found_match = MATCH_ERROR; | |
5381 | break; | |
5382 | } | |
5383 | ||
a8b3b0b6 | 5384 | if (is_bind_c == MATCH_YES) |
01f4fff1 | 5385 | { |
1eabf70a | 5386 | /* Fortran 2008 draft allows BIND(C) for internal procedures. */ |
01f4fff1 | 5387 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 5388 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
524af0d6 JB |
5389 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
5390 | "at %L may not be specified for an internal " | |
5391 | "procedure", &gfc_current_locus)) | |
1eabf70a TB |
5392 | return MATCH_ERROR; |
5393 | ||
524af0d6 | 5394 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, &gfc_current_locus, 1)) |
01f4fff1 TB |
5395 | return MATCH_ERROR; |
5396 | } | |
f5acf0f2 | 5397 | |
a8b3b0b6 CR |
5398 | return found_match; |
5399 | } | |
5400 | ||
5401 | ||
3070bab4 JW |
5402 | /* Procedure pointer return value without RESULT statement: |
5403 | Add "hidden" result variable named "ppr@". */ | |
5404 | ||
524af0d6 | 5405 | static bool |
3070bab4 JW |
5406 | add_hidden_procptr_result (gfc_symbol *sym) |
5407 | { | |
5408 | bool case1,case2; | |
5409 | ||
5410 | if (gfc_notification_std (GFC_STD_F2003) == ERROR) | |
524af0d6 | 5411 | return false; |
3070bab4 JW |
5412 | |
5413 | /* First usage case: PROCEDURE and EXTERNAL statements. */ | |
5414 | case1 = gfc_current_state () == COMP_FUNCTION && gfc_current_block () | |
5415 | && strcmp (gfc_current_block ()->name, sym->name) == 0 | |
5416 | && sym->attr.external; | |
5417 | /* Second usage case: INTERFACE statements. */ | |
5418 | case2 = gfc_current_state () == COMP_INTERFACE && gfc_state_stack->previous | |
5419 | && gfc_state_stack->previous->state == COMP_FUNCTION | |
5420 | && strcmp (gfc_state_stack->previous->sym->name, sym->name) == 0; | |
5421 | ||
5422 | if (case1 || case2) | |
5423 | { | |
5424 | gfc_symtree *stree; | |
5425 | if (case1) | |
08a6b8e0 | 5426 | gfc_get_sym_tree ("ppr@", gfc_current_ns, &stree, false); |
3070bab4 | 5427 | else if (case2) |
c73b6478 JW |
5428 | { |
5429 | gfc_symtree *st2; | |
08a6b8e0 | 5430 | gfc_get_sym_tree ("ppr@", gfc_current_ns->parent, &stree, false); |
c73b6478 JW |
5431 | st2 = gfc_new_symtree (&gfc_current_ns->sym_root, "ppr@"); |
5432 | st2->n.sym = stree->n.sym; | |
5433 | } | |
3070bab4 JW |
5434 | sym->result = stree->n.sym; |
5435 | ||
5436 | sym->result->attr.proc_pointer = sym->attr.proc_pointer; | |
5437 | sym->result->attr.pointer = sym->attr.pointer; | |
5438 | sym->result->attr.external = sym->attr.external; | |
5439 | sym->result->attr.referenced = sym->attr.referenced; | |
fc9c6e5d | 5440 | sym->result->ts = sym->ts; |
3070bab4 JW |
5441 | sym->attr.proc_pointer = 0; |
5442 | sym->attr.pointer = 0; | |
5443 | sym->attr.external = 0; | |
5444 | if (sym->result->attr.external && sym->result->attr.pointer) | |
5445 | { | |
5446 | sym->result->attr.pointer = 0; | |
5447 | sym->result->attr.proc_pointer = 1; | |
5448 | } | |
5449 | ||
5450 | return gfc_add_result (&sym->result->attr, sym->result->name, NULL); | |
5451 | } | |
5452 | /* POINTER after PROCEDURE/EXTERNAL/INTERFACE statement. */ | |
5453 | else if (sym->attr.function && !sym->attr.external && sym->attr.pointer | |
5454 | && sym->result && sym->result != sym && sym->result->attr.external | |
5455 | && sym == gfc_current_ns->proc_name | |
5456 | && sym == sym->result->ns->proc_name | |
5457 | && strcmp ("ppr@", sym->result->name) == 0) | |
5458 | { | |
5459 | sym->result->attr.proc_pointer = 1; | |
5460 | sym->attr.pointer = 0; | |
524af0d6 | 5461 | return true; |
3070bab4 JW |
5462 | } |
5463 | else | |
524af0d6 | 5464 | return false; |
3070bab4 JW |
5465 | } |
5466 | ||
5467 | ||
713485cc JW |
5468 | /* Match the interface for a PROCEDURE declaration, |
5469 | including brackets (R1212). */ | |
69773742 JW |
5470 | |
5471 | static match | |
713485cc | 5472 | match_procedure_interface (gfc_symbol **proc_if) |
69773742 JW |
5473 | { |
5474 | match m; | |
3276e0b3 | 5475 | gfc_symtree *st; |
69773742 | 5476 | locus old_loc, entry_loc; |
3276e0b3 PT |
5477 | gfc_namespace *old_ns = gfc_current_ns; |
5478 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
69773742 | 5479 | |
3276e0b3 | 5480 | old_loc = entry_loc = gfc_current_locus; |
69773742 JW |
5481 | gfc_clear_ts (¤t_ts); |
5482 | ||
5483 | if (gfc_match (" (") != MATCH_YES) | |
5484 | { | |
5485 | gfc_current_locus = entry_loc; | |
5486 | return MATCH_NO; | |
5487 | } | |
5488 | ||
5489 | /* Get the type spec. for the procedure interface. */ | |
5490 | old_loc = gfc_current_locus; | |
e74f1cc8 | 5491 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
f4256439 | 5492 | gfc_gobble_whitespace (); |
8fc541d3 | 5493 | if (m == MATCH_YES || (m == MATCH_NO && gfc_peek_ascii_char () == ')')) |
69773742 JW |
5494 | goto got_ts; |
5495 | ||
5496 | if (m == MATCH_ERROR) | |
5497 | return m; | |
5498 | ||
3276e0b3 | 5499 | /* Procedure interface is itself a procedure. */ |
69773742 | 5500 | gfc_current_locus = old_loc; |
3276e0b3 | 5501 | m = gfc_match_name (name); |
69773742 | 5502 | |
3276e0b3 PT |
5503 | /* First look to see if it is already accessible in the current |
5504 | namespace because it is use associated or contained. */ | |
5505 | st = NULL; | |
5506 | if (gfc_find_sym_tree (name, NULL, 0, &st)) | |
5507 | return MATCH_ERROR; | |
5508 | ||
5509 | /* If it is still not found, then try the parent namespace, if it | |
5510 | exists and create the symbol there if it is still not found. */ | |
5511 | if (gfc_current_ns->parent) | |
5512 | gfc_current_ns = gfc_current_ns->parent; | |
5513 | if (st == NULL && gfc_get_ha_sym_tree (name, &st)) | |
5514 | return MATCH_ERROR; | |
5515 | ||
5516 | gfc_current_ns = old_ns; | |
5517 | *proc_if = st->n.sym; | |
69773742 | 5518 | |
713485cc | 5519 | if (*proc_if) |
69773742 | 5520 | { |
713485cc | 5521 | (*proc_if)->refs++; |
bb343a6c TB |
5522 | /* Resolve interface if possible. That way, attr.procedure is only set |
5523 | if it is declared by a later procedure-declaration-stmt, which is | |
0e8d854e | 5524 | invalid per F08:C1216 (cf. resolve_procedure_interface). */ |
d73e0ccf JD |
5525 | while ((*proc_if)->ts.interface |
5526 | && *proc_if != (*proc_if)->ts.interface) | |
713485cc | 5527 | *proc_if = (*proc_if)->ts.interface; |
bb343a6c | 5528 | |
0e8d854e JW |
5529 | if ((*proc_if)->attr.flavor == FL_UNKNOWN |
5530 | && (*proc_if)->ts.type == BT_UNKNOWN | |
70112e2a | 5531 | && !gfc_add_flavor (&(*proc_if)->attr, FL_PROCEDURE, |
524af0d6 | 5532 | (*proc_if)->name, NULL)) |
0e8d854e | 5533 | return MATCH_ERROR; |
69773742 JW |
5534 | } |
5535 | ||
5536 | got_ts: | |
69773742 JW |
5537 | if (gfc_match (" )") != MATCH_YES) |
5538 | { | |
5539 | gfc_current_locus = entry_loc; | |
5540 | return MATCH_NO; | |
5541 | } | |
5542 | ||
713485cc JW |
5543 | return MATCH_YES; |
5544 | } | |
5545 | ||
5546 | ||
5547 | /* Match a PROCEDURE declaration (R1211). */ | |
5548 | ||
5549 | static match | |
5550 | match_procedure_decl (void) | |
5551 | { | |
5552 | match m; | |
5553 | gfc_symbol *sym, *proc_if = NULL; | |
5554 | int num; | |
5555 | gfc_expr *initializer = NULL; | |
5556 | ||
1cc0e193 | 5557 | /* Parse interface (with brackets). */ |
713485cc JW |
5558 | m = match_procedure_interface (&proc_if); |
5559 | if (m != MATCH_YES) | |
5560 | return m; | |
5561 | ||
5562 | /* Parse attributes (with colons). */ | |
69773742 JW |
5563 | m = match_attr_spec(); |
5564 | if (m == MATCH_ERROR) | |
5565 | return MATCH_ERROR; | |
5566 | ||
0859be17 TB |
5567 | if (proc_if && proc_if->attr.is_bind_c && !current_attr.is_bind_c) |
5568 | { | |
5569 | current_attr.is_bind_c = 1; | |
5570 | has_name_equals = 0; | |
5571 | curr_binding_label = NULL; | |
5572 | } | |
5573 | ||
69773742 JW |
5574 | /* Get procedure symbols. */ |
5575 | for(num=1;;num++) | |
5576 | { | |
69773742 JW |
5577 | m = gfc_match_symbol (&sym, 0); |
5578 | if (m == MATCH_NO) | |
5579 | goto syntax; | |
5580 | else if (m == MATCH_ERROR) | |
5581 | return m; | |
5582 | ||
5583 | /* Add current_attr to the symbol attributes. */ | |
524af0d6 | 5584 | if (!gfc_copy_attr (&sym->attr, ¤t_attr, NULL)) |
69773742 JW |
5585 | return MATCH_ERROR; |
5586 | ||
5587 | if (sym->attr.is_bind_c) | |
5588 | { | |
5589 | /* Check for C1218. */ | |
5590 | if (!proc_if || !proc_if->attr.is_bind_c) | |
5591 | { | |
5592 | gfc_error ("BIND(C) attribute at %C requires " | |
5593 | "an interface with BIND(C)"); | |
5594 | return MATCH_ERROR; | |
5595 | } | |
5596 | /* Check for C1217. */ | |
5597 | if (has_name_equals && sym->attr.pointer) | |
5598 | { | |
5599 | gfc_error ("BIND(C) procedure with NAME may not have " | |
5600 | "POINTER attribute at %C"); | |
5601 | return MATCH_ERROR; | |
5602 | } | |
5603 | if (has_name_equals && sym->attr.dummy) | |
5604 | { | |
5605 | gfc_error ("Dummy procedure at %C may not have " | |
5606 | "BIND(C) attribute with NAME"); | |
5607 | return MATCH_ERROR; | |
5608 | } | |
5609 | /* Set binding label for BIND(C). */ | |
524af0d6 | 5610 | if (!set_binding_label (&sym->binding_label, sym->name, num)) |
69773742 JW |
5611 | return MATCH_ERROR; |
5612 | } | |
5613 | ||
524af0d6 | 5614 | if (!gfc_add_external (&sym->attr, NULL)) |
69773742 | 5615 | return MATCH_ERROR; |
3070bab4 | 5616 | |
524af0d6 | 5617 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
5618 | sym = sym->result; |
5619 | ||
524af0d6 | 5620 | if (!gfc_add_proc (&sym->attr, sym->name, NULL)) |
69773742 JW |
5621 | return MATCH_ERROR; |
5622 | ||
5623 | /* Set interface. */ | |
5624 | if (proc_if != NULL) | |
6cc309c9 | 5625 | { |
1d146030 JW |
5626 | if (sym->ts.type != BT_UNKNOWN) |
5627 | { | |
c4100eae | 5628 | gfc_error ("Procedure %qs at %L already has basic type of %s", |
1d146030 JW |
5629 | sym->name, &gfc_current_locus, |
5630 | gfc_basic_typename (sym->ts.type)); | |
5631 | return MATCH_ERROR; | |
5632 | } | |
32d99e68 | 5633 | sym->ts.interface = proc_if; |
6cc309c9 | 5634 | sym->attr.untyped = 1; |
c73b6478 | 5635 | sym->attr.if_source = IFSRC_IFBODY; |
6cc309c9 | 5636 | } |
69773742 JW |
5637 | else if (current_ts.type != BT_UNKNOWN) |
5638 | { | |
524af0d6 | 5639 | if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
1d146030 | 5640 | return MATCH_ERROR; |
32d99e68 JW |
5641 | sym->ts.interface = gfc_new_symbol ("", gfc_current_ns); |
5642 | sym->ts.interface->ts = current_ts; | |
d91909c0 | 5643 | sym->ts.interface->attr.flavor = FL_PROCEDURE; |
32d99e68 | 5644 | sym->ts.interface->attr.function = 1; |
d91909c0 | 5645 | sym->attr.function = 1; |
c73b6478 | 5646 | sym->attr.if_source = IFSRC_UNKNOWN; |
69773742 JW |
5647 | } |
5648 | ||
8fb74da4 JW |
5649 | if (gfc_match (" =>") == MATCH_YES) |
5650 | { | |
5651 | if (!current_attr.pointer) | |
5652 | { | |
5653 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
5654 | m = MATCH_ERROR; | |
5655 | goto cleanup; | |
5656 | } | |
5657 | ||
80f95228 | 5658 | m = match_pointer_init (&initializer, 1); |
8fb74da4 JW |
5659 | if (m != MATCH_YES) |
5660 | goto cleanup; | |
5661 | ||
524af0d6 | 5662 | if (!add_init_expr_to_sym (sym->name, &initializer, &gfc_current_locus)) |
8fb74da4 JW |
5663 | goto cleanup; |
5664 | ||
5665 | } | |
5666 | ||
69773742 JW |
5667 | if (gfc_match_eos () == MATCH_YES) |
5668 | return MATCH_YES; | |
5669 | if (gfc_match_char (',') != MATCH_YES) | |
5670 | goto syntax; | |
5671 | } | |
5672 | ||
5673 | syntax: | |
5674 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
5675 | return MATCH_ERROR; | |
8fb74da4 JW |
5676 | |
5677 | cleanup: | |
5678 | /* Free stuff up and return. */ | |
5679 | gfc_free_expr (initializer); | |
5680 | return m; | |
69773742 JW |
5681 | } |
5682 | ||
5683 | ||
713485cc JW |
5684 | static match |
5685 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc); | |
5686 | ||
5687 | ||
5688 | /* Match a procedure pointer component declaration (R445). */ | |
5689 | ||
5690 | static match | |
5691 | match_ppc_decl (void) | |
5692 | { | |
5693 | match m; | |
5694 | gfc_symbol *proc_if = NULL; | |
5695 | gfc_typespec ts; | |
5696 | int num; | |
5697 | gfc_component *c; | |
5698 | gfc_expr *initializer = NULL; | |
5699 | gfc_typebound_proc* tb; | |
5700 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5701 | ||
5702 | /* Parse interface (with brackets). */ | |
5703 | m = match_procedure_interface (&proc_if); | |
5704 | if (m != MATCH_YES) | |
5705 | goto syntax; | |
5706 | ||
5707 | /* Parse attributes. */ | |
5708 | tb = XCNEW (gfc_typebound_proc); | |
5709 | tb->where = gfc_current_locus; | |
5710 | m = match_binding_attributes (tb, false, true); | |
5711 | if (m == MATCH_ERROR) | |
5712 | return m; | |
5713 | ||
713485cc JW |
5714 | gfc_clear_attr (¤t_attr); |
5715 | current_attr.procedure = 1; | |
5716 | current_attr.proc_pointer = 1; | |
5717 | current_attr.access = tb->access; | |
5718 | current_attr.flavor = FL_PROCEDURE; | |
5719 | ||
5720 | /* Match the colons (required). */ | |
5721 | if (gfc_match (" ::") != MATCH_YES) | |
5722 | { | |
a4d9b221 | 5723 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
713485cc JW |
5724 | return MATCH_ERROR; |
5725 | } | |
5726 | ||
5727 | /* Check for C450. */ | |
5728 | if (!tb->nopass && proc_if == NULL) | |
5729 | { | |
5730 | gfc_error("NOPASS or explicit interface required at %C"); | |
5731 | return MATCH_ERROR; | |
5732 | } | |
5733 | ||
524af0d6 | 5734 | if (!gfc_notify_std (GFC_STD_F2003, "Procedure pointer component at %C")) |
3212c187 SK |
5735 | return MATCH_ERROR; |
5736 | ||
713485cc JW |
5737 | /* Match PPC names. */ |
5738 | ts = current_ts; | |
5739 | for(num=1;;num++) | |
5740 | { | |
5741 | m = gfc_match_name (name); | |
5742 | if (m == MATCH_NO) | |
5743 | goto syntax; | |
5744 | else if (m == MATCH_ERROR) | |
5745 | return m; | |
5746 | ||
524af0d6 | 5747 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
713485cc JW |
5748 | return MATCH_ERROR; |
5749 | ||
5750 | /* Add current_attr to the symbol attributes. */ | |
524af0d6 | 5751 | if (!gfc_copy_attr (&c->attr, ¤t_attr, NULL)) |
713485cc JW |
5752 | return MATCH_ERROR; |
5753 | ||
524af0d6 | 5754 | if (!gfc_add_external (&c->attr, NULL)) |
713485cc JW |
5755 | return MATCH_ERROR; |
5756 | ||
524af0d6 | 5757 | if (!gfc_add_proc (&c->attr, name, NULL)) |
713485cc JW |
5758 | return MATCH_ERROR; |
5759 | ||
2be03814 TB |
5760 | if (num == 1) |
5761 | c->tb = tb; | |
5762 | else | |
5763 | { | |
5764 | c->tb = XCNEW (gfc_typebound_proc); | |
5765 | c->tb->where = gfc_current_locus; | |
5766 | *c->tb = *tb; | |
5767 | } | |
90661f26 | 5768 | |
713485cc JW |
5769 | /* Set interface. */ |
5770 | if (proc_if != NULL) | |
5771 | { | |
5772 | c->ts.interface = proc_if; | |
5773 | c->attr.untyped = 1; | |
5774 | c->attr.if_source = IFSRC_IFBODY; | |
5775 | } | |
5776 | else if (ts.type != BT_UNKNOWN) | |
5777 | { | |
5778 | c->ts = ts; | |
5779 | c->ts.interface = gfc_new_symbol ("", gfc_current_ns); | |
d7fee03d | 5780 | c->ts.interface->result = c->ts.interface; |
713485cc | 5781 | c->ts.interface->ts = ts; |
d91909c0 | 5782 | c->ts.interface->attr.flavor = FL_PROCEDURE; |
713485cc | 5783 | c->ts.interface->attr.function = 1; |
d91909c0 | 5784 | c->attr.function = 1; |
713485cc JW |
5785 | c->attr.if_source = IFSRC_UNKNOWN; |
5786 | } | |
5787 | ||
5788 | if (gfc_match (" =>") == MATCH_YES) | |
5789 | { | |
80f95228 | 5790 | m = match_pointer_init (&initializer, 1); |
713485cc JW |
5791 | if (m != MATCH_YES) |
5792 | { | |
5793 | gfc_free_expr (initializer); | |
5794 | return m; | |
5795 | } | |
5796 | c->initializer = initializer; | |
5797 | } | |
5798 | ||
5799 | if (gfc_match_eos () == MATCH_YES) | |
5800 | return MATCH_YES; | |
5801 | if (gfc_match_char (',') != MATCH_YES) | |
5802 | goto syntax; | |
5803 | } | |
5804 | ||
5805 | syntax: | |
5806 | gfc_error ("Syntax error in procedure pointer component at %C"); | |
5807 | return MATCH_ERROR; | |
5808 | } | |
5809 | ||
5810 | ||
69773742 JW |
5811 | /* Match a PROCEDURE declaration inside an interface (R1206). */ |
5812 | ||
5813 | static match | |
5814 | match_procedure_in_interface (void) | |
5815 | { | |
5816 | match m; | |
5817 | gfc_symbol *sym; | |
5818 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
a6fcd41a | 5819 | locus old_locus; |
69773742 JW |
5820 | |
5821 | if (current_interface.type == INTERFACE_NAMELESS | |
5822 | || current_interface.type == INTERFACE_ABSTRACT) | |
5823 | { | |
5824 | gfc_error ("PROCEDURE at %C must be in a generic interface"); | |
5825 | return MATCH_ERROR; | |
5826 | } | |
5827 | ||
a6fcd41a TB |
5828 | /* Check if the F2008 optional double colon appears. */ |
5829 | gfc_gobble_whitespace (); | |
5830 | old_locus = gfc_current_locus; | |
5831 | if (gfc_match ("::") == MATCH_YES) | |
5832 | { | |
524af0d6 JB |
5833 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
5834 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
a6fcd41a TB |
5835 | return MATCH_ERROR; |
5836 | } | |
5837 | else | |
5838 | gfc_current_locus = old_locus; | |
5839 | ||
69773742 JW |
5840 | for(;;) |
5841 | { | |
5842 | m = gfc_match_name (name); | |
5843 | if (m == MATCH_NO) | |
5844 | goto syntax; | |
5845 | else if (m == MATCH_ERROR) | |
5846 | return m; | |
5847 | if (gfc_get_symbol (name, gfc_current_ns->parent, &sym)) | |
5848 | return MATCH_ERROR; | |
5849 | ||
524af0d6 | 5850 | if (!gfc_add_interface (sym)) |
69773742 JW |
5851 | return MATCH_ERROR; |
5852 | ||
69773742 JW |
5853 | if (gfc_match_eos () == MATCH_YES) |
5854 | break; | |
5855 | if (gfc_match_char (',') != MATCH_YES) | |
5856 | goto syntax; | |
5857 | } | |
5858 | ||
5859 | return MATCH_YES; | |
5860 | ||
5861 | syntax: | |
5862 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
5863 | return MATCH_ERROR; | |
5864 | } | |
5865 | ||
5866 | ||
5867 | /* General matcher for PROCEDURE declarations. */ | |
5868 | ||
30b608eb DK |
5869 | static match match_procedure_in_type (void); |
5870 | ||
69773742 JW |
5871 | match |
5872 | gfc_match_procedure (void) | |
5873 | { | |
5874 | match m; | |
5875 | ||
5876 | switch (gfc_current_state ()) | |
5877 | { | |
5878 | case COMP_NONE: | |
5879 | case COMP_PROGRAM: | |
5880 | case COMP_MODULE: | |
4668d6f9 | 5881 | case COMP_SUBMODULE: |
69773742 JW |
5882 | case COMP_SUBROUTINE: |
5883 | case COMP_FUNCTION: | |
3547d57e | 5884 | case COMP_BLOCK: |
69773742 JW |
5885 | m = match_procedure_decl (); |
5886 | break; | |
5887 | case COMP_INTERFACE: | |
5888 | m = match_procedure_in_interface (); | |
5889 | break; | |
5890 | case COMP_DERIVED: | |
713485cc JW |
5891 | m = match_ppc_decl (); |
5892 | break; | |
30b608eb DK |
5893 | case COMP_DERIVED_CONTAINS: |
5894 | m = match_procedure_in_type (); | |
5895 | break; | |
69773742 JW |
5896 | default: |
5897 | return MATCH_NO; | |
5898 | } | |
5899 | ||
5900 | if (m != MATCH_YES) | |
5901 | return m; | |
5902 | ||
524af0d6 | 5903 | if (!gfc_notify_std (GFC_STD_F2003, "PROCEDURE statement at %C")) |
69773742 JW |
5904 | return MATCH_ERROR; |
5905 | ||
5906 | return m; | |
5907 | } | |
5908 | ||
5909 | ||
c3005b0f DK |
5910 | /* Warn if a matched procedure has the same name as an intrinsic; this is |
5911 | simply a wrapper around gfc_warn_intrinsic_shadow that interprets the current | |
5912 | parser-state-stack to find out whether we're in a module. */ | |
5913 | ||
5914 | static void | |
73e42eef | 5915 | do_warn_intrinsic_shadow (const gfc_symbol* sym, bool func) |
c3005b0f DK |
5916 | { |
5917 | bool in_module; | |
5918 | ||
5919 | in_module = (gfc_state_stack->previous | |
4668d6f9 PT |
5920 | && (gfc_state_stack->previous->state == COMP_MODULE |
5921 | || gfc_state_stack->previous->state == COMP_SUBMODULE)); | |
c3005b0f DK |
5922 | |
5923 | gfc_warn_intrinsic_shadow (sym, in_module, func); | |
5924 | } | |
5925 | ||
5926 | ||
6de9cd9a DN |
5927 | /* Match a function declaration. */ |
5928 | ||
5929 | match | |
5930 | gfc_match_function_decl (void) | |
5931 | { | |
5932 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5933 | gfc_symbol *sym, *result; | |
5934 | locus old_loc; | |
5935 | match m; | |
a8b3b0b6 | 5936 | match suffix_match; |
f5acf0f2 | 5937 | match found_match; /* Status returned by match func. */ |
6de9cd9a DN |
5938 | |
5939 | if (gfc_current_state () != COMP_NONE | |
5940 | && gfc_current_state () != COMP_INTERFACE | |
5941 | && gfc_current_state () != COMP_CONTAINS) | |
5942 | return MATCH_NO; | |
5943 | ||
5944 | gfc_clear_ts (¤t_ts); | |
5945 | ||
63645982 | 5946 | old_loc = gfc_current_locus; |
6de9cd9a | 5947 | |
1c8bcdf7 | 5948 | m = gfc_match_prefix (¤t_ts); |
6de9cd9a DN |
5949 | if (m != MATCH_YES) |
5950 | { | |
63645982 | 5951 | gfc_current_locus = old_loc; |
6de9cd9a DN |
5952 | return m; |
5953 | } | |
5954 | ||
5955 | if (gfc_match ("function% %n", name) != MATCH_YES) | |
5956 | { | |
63645982 | 5957 | gfc_current_locus = old_loc; |
6de9cd9a DN |
5958 | return MATCH_NO; |
5959 | } | |
4668d6f9 | 5960 | |
1a492601 | 5961 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 5962 | return MATCH_ERROR; |
3070bab4 | 5963 | |
524af0d6 | 5964 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
5965 | sym = sym->result; |
5966 | ||
4668d6f9 PT |
5967 | if (current_attr.module_procedure) |
5968 | sym->attr.module_procedure = 1; | |
5969 | ||
6de9cd9a DN |
5970 | gfc_new_block = sym; |
5971 | ||
5972 | m = gfc_match_formal_arglist (sym, 0, 0); | |
5973 | if (m == MATCH_NO) | |
2b9a33ae TS |
5974 | { |
5975 | gfc_error ("Expected formal argument list in function " | |
636dff67 | 5976 | "definition at %C"); |
2b9a33ae TS |
5977 | m = MATCH_ERROR; |
5978 | goto cleanup; | |
5979 | } | |
6de9cd9a DN |
5980 | else if (m == MATCH_ERROR) |
5981 | goto cleanup; | |
5982 | ||
5983 | result = NULL; | |
5984 | ||
a8b3b0b6 CR |
5985 | /* According to the draft, the bind(c) and result clause can |
5986 | come in either order after the formal_arg_list (i.e., either | |
5987 | can be first, both can exist together or by themselves or neither | |
5988 | one). Therefore, the match_result can't match the end of the | |
5989 | string, and check for the bind(c) or result clause in either order. */ | |
5990 | found_match = gfc_match_eos (); | |
5991 | ||
5992 | /* Make sure that it isn't already declared as BIND(C). If it is, it | |
5993 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5994 | not allowed for procedures. */ | |
5995 | if (sym->attr.is_bind_c == 1) | |
5996 | { | |
5997 | sym->attr.is_bind_c = 0; | |
5998 | if (sym->old_symbol != NULL) | |
5999 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
6000 | "variables or common blocks", | |
6001 | &(sym->old_symbol->declared_at)); | |
6002 | else | |
6003 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
6004 | "variables or common blocks", &gfc_current_locus); | |
6de9cd9a DN |
6005 | } |
6006 | ||
a8b3b0b6 | 6007 | if (found_match != MATCH_YES) |
6de9cd9a | 6008 | { |
a8b3b0b6 CR |
6009 | /* If we haven't found the end-of-statement, look for a suffix. */ |
6010 | suffix_match = gfc_match_suffix (sym, &result); | |
6011 | if (suffix_match == MATCH_YES) | |
6012 | /* Need to get the eos now. */ | |
6013 | found_match = gfc_match_eos (); | |
6014 | else | |
6015 | found_match = suffix_match; | |
6de9cd9a DN |
6016 | } |
6017 | ||
a8b3b0b6 CR |
6018 | if(found_match != MATCH_YES) |
6019 | m = MATCH_ERROR; | |
6de9cd9a DN |
6020 | else |
6021 | { | |
a8b3b0b6 CR |
6022 | /* Make changes to the symbol. */ |
6023 | m = MATCH_ERROR; | |
f5acf0f2 | 6024 | |
524af0d6 | 6025 | if (!gfc_add_function (&sym->attr, sym->name, NULL)) |
a8b3b0b6 | 6026 | goto cleanup; |
f5acf0f2 | 6027 | |
70112e2a | 6028 | if (!gfc_missing_attr (&sym->attr, NULL)) |
a8b3b0b6 | 6029 | goto cleanup; |
6de9cd9a | 6030 | |
70112e2a PT |
6031 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
6032 | { | |
6033 | if(!sym->attr.module_procedure) | |
6034 | goto cleanup; | |
6035 | else | |
6036 | gfc_error_check (); | |
6037 | } | |
6038 | ||
a99d95a2 | 6039 | /* Delay matching the function characteristics until after the |
1c8bcdf7 | 6040 | specification block by signalling kind=-1. */ |
a99d95a2 PT |
6041 | sym->declared_at = old_loc; |
6042 | if (current_ts.type != BT_UNKNOWN) | |
6043 | current_ts.kind = -1; | |
6044 | else | |
6045 | current_ts.kind = 0; | |
1c8bcdf7 | 6046 | |
a8b3b0b6 CR |
6047 | if (result == NULL) |
6048 | { | |
6de7294f | 6049 | if (current_ts.type != BT_UNKNOWN |
524af0d6 | 6050 | && !gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
6de7294f | 6051 | goto cleanup; |
a8b3b0b6 CR |
6052 | sym->result = sym; |
6053 | } | |
6054 | else | |
6055 | { | |
6de7294f | 6056 | if (current_ts.type != BT_UNKNOWN |
524af0d6 | 6057 | && !gfc_add_type (result, ¤t_ts, &gfc_current_locus)) |
6de7294f | 6058 | goto cleanup; |
a8b3b0b6 CR |
6059 | sym->result = result; |
6060 | } | |
6061 | ||
c3005b0f | 6062 | /* Warn if this procedure has the same name as an intrinsic. */ |
73e42eef | 6063 | do_warn_intrinsic_shadow (sym, true); |
c3005b0f | 6064 | |
a8b3b0b6 CR |
6065 | return MATCH_YES; |
6066 | } | |
6de9cd9a DN |
6067 | |
6068 | cleanup: | |
63645982 | 6069 | gfc_current_locus = old_loc; |
6de9cd9a DN |
6070 | return m; |
6071 | } | |
6072 | ||
636dff67 SK |
6073 | |
6074 | /* This is mostly a copy of parse.c(add_global_procedure) but modified to | |
6075 | pass the name of the entry, rather than the gfc_current_block name, and | |
6076 | to return false upon finding an existing global entry. */ | |
68ea355b PT |
6077 | |
6078 | static bool | |
3a43b5b3 TB |
6079 | add_global_entry (const char *name, const char *binding_label, bool sub, |
6080 | locus *where) | |
68ea355b PT |
6081 | { |
6082 | gfc_gsymbol *s; | |
32e8bb8e | 6083 | enum gfc_symbol_type type; |
68ea355b | 6084 | |
7389bce6 | 6085 | type = sub ? GSYM_SUBROUTINE : GSYM_FUNCTION; |
68ea355b | 6086 | |
f11de7c5 TB |
6087 | /* Only in Fortran 2003: For procedures with a binding label also the Fortran |
6088 | name is a global identifier. */ | |
6089 | if (!binding_label || gfc_notification_std (GFC_STD_F2008)) | |
68ea355b | 6090 | { |
f11de7c5 TB |
6091 | s = gfc_get_gsymbol (name); |
6092 | ||
6093 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
6094 | { | |
3a43b5b3 | 6095 | gfc_global_used (s, where); |
f11de7c5 TB |
6096 | return false; |
6097 | } | |
6098 | else | |
6099 | { | |
6100 | s->type = type; | |
77f8682b | 6101 | s->sym_name = name; |
3a43b5b3 | 6102 | s->where = *where; |
f11de7c5 TB |
6103 | s->defined = 1; |
6104 | s->ns = gfc_current_ns; | |
6105 | } | |
68ea355b | 6106 | } |
f11de7c5 TB |
6107 | |
6108 | /* Don't add the symbol multiple times. */ | |
6109 | if (binding_label | |
6110 | && (!gfc_notification_std (GFC_STD_F2008) | |
6111 | || strcmp (name, binding_label) != 0)) | |
6112 | { | |
6113 | s = gfc_get_gsymbol (binding_label); | |
6114 | ||
6115 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
6116 | { | |
3a43b5b3 | 6117 | gfc_global_used (s, where); |
f11de7c5 TB |
6118 | return false; |
6119 | } | |
6120 | else | |
6121 | { | |
6122 | s->type = type; | |
77f8682b | 6123 | s->sym_name = name; |
f11de7c5 | 6124 | s->binding_label = binding_label; |
3a43b5b3 | 6125 | s->where = *where; |
f11de7c5 TB |
6126 | s->defined = 1; |
6127 | s->ns = gfc_current_ns; | |
6128 | } | |
6129 | } | |
6130 | ||
6131 | return true; | |
68ea355b | 6132 | } |
6de9cd9a | 6133 | |
636dff67 | 6134 | |
6de9cd9a DN |
6135 | /* Match an ENTRY statement. */ |
6136 | ||
6137 | match | |
6138 | gfc_match_entry (void) | |
6139 | { | |
3d79abbd PB |
6140 | gfc_symbol *proc; |
6141 | gfc_symbol *result; | |
6142 | gfc_symbol *entry; | |
6de9cd9a DN |
6143 | char name[GFC_MAX_SYMBOL_LEN + 1]; |
6144 | gfc_compile_state state; | |
6145 | match m; | |
3d79abbd | 6146 | gfc_entry_list *el; |
c96cfa49 | 6147 | locus old_loc; |
1a492601 | 6148 | bool module_procedure; |
bc3e7a8c TB |
6149 | char peek_char; |
6150 | match is_bind_c; | |
6de9cd9a DN |
6151 | |
6152 | m = gfc_match_name (name); | |
6153 | if (m != MATCH_YES) | |
6154 | return m; | |
6155 | ||
524af0d6 | 6156 | if (!gfc_notify_std (GFC_STD_F2008_OBS, "ENTRY statement at %C")) |
58fc89f6 TB |
6157 | return MATCH_ERROR; |
6158 | ||
3d79abbd | 6159 | state = gfc_current_state (); |
4c93c95a | 6160 | if (state != COMP_SUBROUTINE && state != COMP_FUNCTION) |
3d79abbd | 6161 | { |
4c93c95a FXC |
6162 | switch (state) |
6163 | { | |
6164 | case COMP_PROGRAM: | |
6165 | gfc_error ("ENTRY statement at %C cannot appear within a PROGRAM"); | |
6166 | break; | |
6167 | case COMP_MODULE: | |
6168 | gfc_error ("ENTRY statement at %C cannot appear within a MODULE"); | |
6169 | break; | |
4668d6f9 PT |
6170 | case COMP_SUBMODULE: |
6171 | gfc_error ("ENTRY statement at %C cannot appear within a SUBMODULE"); | |
6172 | break; | |
4c93c95a | 6173 | case COMP_BLOCK_DATA: |
636dff67 SK |
6174 | gfc_error ("ENTRY statement at %C cannot appear within " |
6175 | "a BLOCK DATA"); | |
4c93c95a FXC |
6176 | break; |
6177 | case COMP_INTERFACE: | |
636dff67 SK |
6178 | gfc_error ("ENTRY statement at %C cannot appear within " |
6179 | "an INTERFACE"); | |
4c93c95a | 6180 | break; |
f6288c24 FR |
6181 | case COMP_STRUCTURE: |
6182 | gfc_error ("ENTRY statement at %C cannot appear within " | |
6183 | "a STRUCTURE block"); | |
6184 | break; | |
4c93c95a | 6185 | case COMP_DERIVED: |
636dff67 SK |
6186 | gfc_error ("ENTRY statement at %C cannot appear within " |
6187 | "a DERIVED TYPE block"); | |
4c93c95a FXC |
6188 | break; |
6189 | case COMP_IF: | |
636dff67 SK |
6190 | gfc_error ("ENTRY statement at %C cannot appear within " |
6191 | "an IF-THEN block"); | |
4c93c95a FXC |
6192 | break; |
6193 | case COMP_DO: | |
8c6a85e3 | 6194 | case COMP_DO_CONCURRENT: |
636dff67 SK |
6195 | gfc_error ("ENTRY statement at %C cannot appear within " |
6196 | "a DO block"); | |
4c93c95a FXC |
6197 | break; |
6198 | case COMP_SELECT: | |
636dff67 SK |
6199 | gfc_error ("ENTRY statement at %C cannot appear within " |
6200 | "a SELECT block"); | |
4c93c95a FXC |
6201 | break; |
6202 | case COMP_FORALL: | |
636dff67 SK |
6203 | gfc_error ("ENTRY statement at %C cannot appear within " |
6204 | "a FORALL block"); | |
4c93c95a FXC |
6205 | break; |
6206 | case COMP_WHERE: | |
636dff67 SK |
6207 | gfc_error ("ENTRY statement at %C cannot appear within " |
6208 | "a WHERE block"); | |
4c93c95a FXC |
6209 | break; |
6210 | case COMP_CONTAINS: | |
636dff67 SK |
6211 | gfc_error ("ENTRY statement at %C cannot appear within " |
6212 | "a contained subprogram"); | |
4c93c95a FXC |
6213 | break; |
6214 | default: | |
fce523bf | 6215 | gfc_error ("Unexpected ENTRY statement at %C"); |
4c93c95a | 6216 | } |
3d79abbd PB |
6217 | return MATCH_ERROR; |
6218 | } | |
6219 | ||
5f0ba745 SK |
6220 | if ((state == COMP_SUBROUTINE || state == COMP_FUNCTION) |
6221 | && gfc_state_stack->previous->state == COMP_INTERFACE) | |
6222 | { | |
6223 | gfc_error ("ENTRY statement at %C cannot appear within an INTERFACE"); | |
6224 | return MATCH_ERROR; | |
6225 | } | |
6226 | ||
1a492601 | 6227 | module_procedure = gfc_current_ns->parent != NULL |
636dff67 SK |
6228 | && gfc_current_ns->parent->proc_name |
6229 | && gfc_current_ns->parent->proc_name->attr.flavor | |
6230 | == FL_MODULE; | |
1a492601 | 6231 | |
3d79abbd PB |
6232 | if (gfc_current_ns->parent != NULL |
6233 | && gfc_current_ns->parent->proc_name | |
1a492601 | 6234 | && !module_procedure) |
3d79abbd PB |
6235 | { |
6236 | gfc_error("ENTRY statement at %C cannot appear in a " | |
6237 | "contained procedure"); | |
6238 | return MATCH_ERROR; | |
6239 | } | |
6240 | ||
1a492601 PT |
6241 | /* Module function entries need special care in get_proc_name |
6242 | because previous references within the function will have | |
6243 | created symbols attached to the current namespace. */ | |
6244 | if (get_proc_name (name, &entry, | |
6245 | gfc_current_ns->parent != NULL | |
ecd3b73c | 6246 | && module_procedure)) |
6de9cd9a DN |
6247 | return MATCH_ERROR; |
6248 | ||
3d79abbd PB |
6249 | proc = gfc_current_block (); |
6250 | ||
bc3e7a8c TB |
6251 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
6252 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
6253 | not allowed for procedures. */ | |
6254 | if (entry->attr.is_bind_c == 1) | |
6255 | { | |
6256 | entry->attr.is_bind_c = 0; | |
6257 | if (entry->old_symbol != NULL) | |
6258 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
6259 | "variables or common blocks", | |
6260 | &(entry->old_symbol->declared_at)); | |
6261 | else | |
6262 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
6263 | "variables or common blocks", &gfc_current_locus); | |
6264 | } | |
f5acf0f2 | 6265 | |
bc3e7a8c TB |
6266 | /* Check what next non-whitespace character is so we can tell if there |
6267 | is the required parens if we have a BIND(C). */ | |
3a43b5b3 | 6268 | old_loc = gfc_current_locus; |
bc3e7a8c | 6269 | gfc_gobble_whitespace (); |
8fc541d3 | 6270 | peek_char = gfc_peek_ascii_char (); |
bc3e7a8c | 6271 | |
3d79abbd | 6272 | if (state == COMP_SUBROUTINE) |
6de9cd9a | 6273 | { |
6de9cd9a DN |
6274 | m = gfc_match_formal_arglist (entry, 0, 1); |
6275 | if (m != MATCH_YES) | |
6276 | return MATCH_ERROR; | |
6277 | ||
1eabf70a TB |
6278 | /* Call gfc_match_bind_c with allow_binding_name = true as ENTRY can |
6279 | never be an internal procedure. */ | |
6280 | is_bind_c = gfc_match_bind_c (entry, true); | |
bc3e7a8c TB |
6281 | if (is_bind_c == MATCH_ERROR) |
6282 | return MATCH_ERROR; | |
6283 | if (is_bind_c == MATCH_YES) | |
6284 | { | |
6285 | if (peek_char != '(') | |
6286 | { | |
6287 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
6288 | return MATCH_ERROR; | |
6289 | } | |
70112e2a | 6290 | if (!gfc_add_is_bind_c (&(entry->attr), entry->name, |
524af0d6 | 6291 | &(entry->declared_at), 1)) |
bc3e7a8c TB |
6292 | return MATCH_ERROR; |
6293 | } | |
6294 | ||
f11de7c5 | 6295 | if (!gfc_current_ns->parent |
3a43b5b3 TB |
6296 | && !add_global_entry (name, entry->binding_label, true, |
6297 | &old_loc)) | |
f11de7c5 TB |
6298 | return MATCH_ERROR; |
6299 | ||
6300 | /* An entry in a subroutine. */ | |
524af0d6 JB |
6301 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
6302 | || !gfc_add_subroutine (&entry->attr, entry->name, NULL)) | |
6de9cd9a | 6303 | return MATCH_ERROR; |
3d79abbd PB |
6304 | } |
6305 | else | |
6306 | { | |
c96cfa49 | 6307 | /* An entry in a function. |
636dff67 SK |
6308 | We need to take special care because writing |
6309 | ENTRY f() | |
6310 | as | |
6311 | ENTRY f | |
6312 | is allowed, whereas | |
6313 | ENTRY f() RESULT (r) | |
6314 | can't be written as | |
6315 | ENTRY f RESULT (r). */ | |
c96cfa49 TS |
6316 | if (gfc_match_eos () == MATCH_YES) |
6317 | { | |
6318 | gfc_current_locus = old_loc; | |
6319 | /* Match the empty argument list, and add the interface to | |
6320 | the symbol. */ | |
6321 | m = gfc_match_formal_arglist (entry, 0, 1); | |
6322 | } | |
6323 | else | |
6324 | m = gfc_match_formal_arglist (entry, 0, 0); | |
6325 | ||
6de9cd9a DN |
6326 | if (m != MATCH_YES) |
6327 | return MATCH_ERROR; | |
6328 | ||
6de9cd9a DN |
6329 | result = NULL; |
6330 | ||
6331 | if (gfc_match_eos () == MATCH_YES) | |
6332 | { | |
524af0d6 JB |
6333 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
6334 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
6de9cd9a DN |
6335 | return MATCH_ERROR; |
6336 | ||
d198b59a | 6337 | entry->result = entry; |
6de9cd9a DN |
6338 | } |
6339 | else | |
6340 | { | |
bc3e7a8c | 6341 | m = gfc_match_suffix (entry, &result); |
6de9cd9a DN |
6342 | if (m == MATCH_NO) |
6343 | gfc_syntax_error (ST_ENTRY); | |
6344 | if (m != MATCH_YES) | |
6345 | return MATCH_ERROR; | |
6346 | ||
bc3e7a8c TB |
6347 | if (result) |
6348 | { | |
524af0d6 JB |
6349 | if (!gfc_add_result (&result->attr, result->name, NULL) |
6350 | || !gfc_add_entry (&entry->attr, result->name, NULL) | |
6351 | || !gfc_add_function (&entry->attr, result->name, NULL)) | |
bc3e7a8c TB |
6352 | return MATCH_ERROR; |
6353 | entry->result = result; | |
6354 | } | |
6355 | else | |
6356 | { | |
524af0d6 JB |
6357 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
6358 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
bc3e7a8c TB |
6359 | return MATCH_ERROR; |
6360 | entry->result = entry; | |
6361 | } | |
6de9cd9a | 6362 | } |
f11de7c5 TB |
6363 | |
6364 | if (!gfc_current_ns->parent | |
3a43b5b3 TB |
6365 | && !add_global_entry (name, entry->binding_label, false, |
6366 | &old_loc)) | |
f11de7c5 | 6367 | return MATCH_ERROR; |
6de9cd9a DN |
6368 | } |
6369 | ||
6370 | if (gfc_match_eos () != MATCH_YES) | |
6371 | { | |
6372 | gfc_syntax_error (ST_ENTRY); | |
6373 | return MATCH_ERROR; | |
6374 | } | |
6375 | ||
3d79abbd PB |
6376 | entry->attr.recursive = proc->attr.recursive; |
6377 | entry->attr.elemental = proc->attr.elemental; | |
6378 | entry->attr.pure = proc->attr.pure; | |
6de9cd9a | 6379 | |
3d79abbd PB |
6380 | el = gfc_get_entry_list (); |
6381 | el->sym = entry; | |
6382 | el->next = gfc_current_ns->entries; | |
6383 | gfc_current_ns->entries = el; | |
6384 | if (el->next) | |
6385 | el->id = el->next->id + 1; | |
6386 | else | |
6387 | el->id = 1; | |
6de9cd9a | 6388 | |
3d79abbd PB |
6389 | new_st.op = EXEC_ENTRY; |
6390 | new_st.ext.entry = el; | |
6391 | ||
6392 | return MATCH_YES; | |
6de9cd9a DN |
6393 | } |
6394 | ||
6395 | ||
6396 | /* Match a subroutine statement, including optional prefixes. */ | |
6397 | ||
6398 | match | |
6399 | gfc_match_subroutine (void) | |
6400 | { | |
6401 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6402 | gfc_symbol *sym; | |
6403 | match m; | |
a8b3b0b6 CR |
6404 | match is_bind_c; |
6405 | char peek_char; | |
1eabf70a | 6406 | bool allow_binding_name; |
6de9cd9a DN |
6407 | |
6408 | if (gfc_current_state () != COMP_NONE | |
6409 | && gfc_current_state () != COMP_INTERFACE | |
6410 | && gfc_current_state () != COMP_CONTAINS) | |
6411 | return MATCH_NO; | |
6412 | ||
1c8bcdf7 | 6413 | m = gfc_match_prefix (NULL); |
6de9cd9a DN |
6414 | if (m != MATCH_YES) |
6415 | return m; | |
6416 | ||
6417 | m = gfc_match ("subroutine% %n", name); | |
6418 | if (m != MATCH_YES) | |
6419 | return m; | |
6420 | ||
1a492601 | 6421 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 6422 | return MATCH_ERROR; |
3070bab4 | 6423 | |
7fcd5ad5 | 6424 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if |
1cc0e193 | 6425 | the symbol existed before. */ |
7fcd5ad5 TB |
6426 | sym->declared_at = gfc_current_locus; |
6427 | ||
4668d6f9 PT |
6428 | if (current_attr.module_procedure) |
6429 | sym->attr.module_procedure = 1; | |
6430 | ||
524af0d6 | 6431 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
6432 | sym = sym->result; |
6433 | ||
6de9cd9a DN |
6434 | gfc_new_block = sym; |
6435 | ||
a8b3b0b6 | 6436 | /* Check what next non-whitespace character is so we can tell if there |
bc3e7a8c | 6437 | is the required parens if we have a BIND(C). */ |
a8b3b0b6 | 6438 | gfc_gobble_whitespace (); |
8fc541d3 | 6439 | peek_char = gfc_peek_ascii_char (); |
f5acf0f2 | 6440 | |
524af0d6 | 6441 | if (!gfc_add_subroutine (&sym->attr, sym->name, NULL)) |
6de9cd9a DN |
6442 | return MATCH_ERROR; |
6443 | ||
6444 | if (gfc_match_formal_arglist (sym, 0, 1) != MATCH_YES) | |
6445 | return MATCH_ERROR; | |
6446 | ||
a8b3b0b6 CR |
6447 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
6448 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
6449 | not allowed for procedures. */ | |
6450 | if (sym->attr.is_bind_c == 1) | |
6451 | { | |
6452 | sym->attr.is_bind_c = 0; | |
6453 | if (sym->old_symbol != NULL) | |
6454 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
6455 | "variables or common blocks", | |
6456 | &(sym->old_symbol->declared_at)); | |
6457 | else | |
6458 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
6459 | "variables or common blocks", &gfc_current_locus); | |
6460 | } | |
1eabf70a TB |
6461 | |
6462 | /* C binding names are not allowed for internal procedures. */ | |
6463 | if (gfc_current_state () == COMP_CONTAINS | |
6464 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
6465 | allow_binding_name = false; | |
6466 | else | |
6467 | allow_binding_name = true; | |
6468 | ||
a8b3b0b6 CR |
6469 | /* Here, we are just checking if it has the bind(c) attribute, and if |
6470 | so, then we need to make sure it's all correct. If it doesn't, | |
6471 | we still need to continue matching the rest of the subroutine line. */ | |
1eabf70a | 6472 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
6473 | if (is_bind_c == MATCH_ERROR) |
6474 | { | |
6475 | /* There was an attempt at the bind(c), but it was wrong. An | |
6476 | error message should have been printed w/in the gfc_match_bind_c | |
6477 | so here we'll just return the MATCH_ERROR. */ | |
6478 | return MATCH_ERROR; | |
6479 | } | |
6480 | ||
6481 | if (is_bind_c == MATCH_YES) | |
6482 | { | |
1eabf70a | 6483 | /* The following is allowed in the Fortran 2008 draft. */ |
01f4fff1 | 6484 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 6485 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
524af0d6 JB |
6486 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
6487 | "at %L may not be specified for an internal " | |
6488 | "procedure", &gfc_current_locus)) | |
1eabf70a TB |
6489 | return MATCH_ERROR; |
6490 | ||
a8b3b0b6 CR |
6491 | if (peek_char != '(') |
6492 | { | |
6493 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
6494 | return MATCH_ERROR; | |
6495 | } | |
70112e2a | 6496 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, |
524af0d6 | 6497 | &(sym->declared_at), 1)) |
a8b3b0b6 CR |
6498 | return MATCH_ERROR; |
6499 | } | |
f5acf0f2 | 6500 | |
6de9cd9a DN |
6501 | if (gfc_match_eos () != MATCH_YES) |
6502 | { | |
6503 | gfc_syntax_error (ST_SUBROUTINE); | |
6504 | return MATCH_ERROR; | |
6505 | } | |
6506 | ||
524af0d6 | 6507 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
70112e2a PT |
6508 | { |
6509 | if(!sym->attr.module_procedure) | |
6510 | return MATCH_ERROR; | |
6511 | else | |
6512 | gfc_error_check (); | |
6513 | } | |
6de9cd9a | 6514 | |
c3005b0f | 6515 | /* Warn if it has the same name as an intrinsic. */ |
73e42eef | 6516 | do_warn_intrinsic_shadow (sym, false); |
c3005b0f | 6517 | |
6de9cd9a DN |
6518 | return MATCH_YES; |
6519 | } | |
6520 | ||
6521 | ||
3b37ccd4 FXC |
6522 | /* Check that the NAME identifier in a BIND attribute or statement |
6523 | is conform to C identifier rules. */ | |
6524 | ||
6525 | match | |
6526 | check_bind_name_identifier (char **name) | |
6527 | { | |
6528 | char *n = *name, *p; | |
6529 | ||
6530 | /* Remove leading spaces. */ | |
6531 | while (*n == ' ') | |
6532 | n++; | |
6533 | ||
6534 | /* On an empty string, free memory and set name to NULL. */ | |
6535 | if (*n == '\0') | |
6536 | { | |
6537 | free (*name); | |
6538 | *name = NULL; | |
6539 | return MATCH_YES; | |
6540 | } | |
6541 | ||
6542 | /* Remove trailing spaces. */ | |
6543 | p = n + strlen(n) - 1; | |
6544 | while (*p == ' ') | |
6545 | *(p--) = '\0'; | |
6546 | ||
6547 | /* Insert the identifier into the symbol table. */ | |
6548 | p = xstrdup (n); | |
6549 | free (*name); | |
6550 | *name = p; | |
6551 | ||
6552 | /* Now check that identifier is valid under C rules. */ | |
6553 | if (ISDIGIT (*p)) | |
6554 | { | |
6555 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
6556 | return MATCH_ERROR; | |
6557 | } | |
6558 | ||
6559 | for (; *p; p++) | |
6560 | if (!(ISALNUM (*p) || *p == '_' || *p == '$')) | |
6561 | { | |
6562 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
6563 | return MATCH_ERROR; | |
6564 | } | |
6565 | ||
6566 | return MATCH_YES; | |
6567 | } | |
6568 | ||
6569 | ||
a8b3b0b6 CR |
6570 | /* Match a BIND(C) specifier, with the optional 'name=' specifier if |
6571 | given, and set the binding label in either the given symbol (if not | |
86bf520d | 6572 | NULL), or in the current_ts. The symbol may be NULL because we may |
a8b3b0b6 CR |
6573 | encounter the BIND(C) before the declaration itself. Return |
6574 | MATCH_NO if what we're looking at isn't a BIND(C) specifier, | |
6575 | MATCH_ERROR if it is a BIND(C) clause but an error was encountered, | |
6576 | or MATCH_YES if the specifier was correct and the binding label and | |
6577 | bind(c) fields were set correctly for the given symbol or the | |
1eabf70a TB |
6578 | current_ts. If allow_binding_name is false, no binding name may be |
6579 | given. */ | |
a8b3b0b6 CR |
6580 | |
6581 | match | |
1eabf70a | 6582 | gfc_match_bind_c (gfc_symbol *sym, bool allow_binding_name) |
a8b3b0b6 | 6583 | { |
3b37ccd4 FXC |
6584 | char *binding_label = NULL; |
6585 | gfc_expr *e = NULL; | |
a8b3b0b6 | 6586 | |
f5acf0f2 | 6587 | /* Initialize the flag that specifies whether we encountered a NAME= |
a8b3b0b6 CR |
6588 | specifier or not. */ |
6589 | has_name_equals = 0; | |
6590 | ||
a8b3b0b6 CR |
6591 | /* This much we have to be able to match, in this order, if |
6592 | there is a bind(c) label. */ | |
6593 | if (gfc_match (" bind ( c ") != MATCH_YES) | |
6594 | return MATCH_NO; | |
6595 | ||
6596 | /* Now see if there is a binding label, or if we've reached the | |
6597 | end of the bind(c) attribute without one. */ | |
6598 | if (gfc_match_char (',') == MATCH_YES) | |
6599 | { | |
6600 | if (gfc_match (" name = ") != MATCH_YES) | |
6601 | { | |
6602 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
6603 | "at %C"); | |
6604 | /* should give an error message here */ | |
6605 | return MATCH_ERROR; | |
6606 | } | |
6607 | ||
6608 | has_name_equals = 1; | |
6609 | ||
3b37ccd4 FXC |
6610 | if (gfc_match_init_expr (&e) != MATCH_YES) |
6611 | { | |
6612 | gfc_free_expr (e); | |
6613 | return MATCH_ERROR; | |
6614 | } | |
f5acf0f2 | 6615 | |
3b37ccd4 | 6616 | if (!gfc_simplify_expr(e, 0)) |
a8b3b0b6 | 6617 | { |
3b37ccd4 FXC |
6618 | gfc_error ("NAME= specifier at %C should be a constant expression"); |
6619 | gfc_free_expr (e); | |
6620 | return MATCH_ERROR; | |
a8b3b0b6 | 6621 | } |
3b37ccd4 FXC |
6622 | |
6623 | if (e->expr_type != EXPR_CONSTANT || e->ts.type != BT_CHARACTER | |
6624 | || e->ts.kind != gfc_default_character_kind || e->rank != 0) | |
a8b3b0b6 | 6625 | { |
3b37ccd4 FXC |
6626 | gfc_error ("NAME= specifier at %C should be a scalar of " |
6627 | "default character kind"); | |
6628 | gfc_free_expr(e); | |
6629 | return MATCH_ERROR; | |
a8b3b0b6 | 6630 | } |
3b37ccd4 FXC |
6631 | |
6632 | // Get a C string from the Fortran string constant | |
6633 | binding_label = gfc_widechar_to_char (e->value.character.string, | |
6634 | e->value.character.length); | |
6635 | gfc_free_expr(e); | |
6636 | ||
6637 | // Check that it is valid (old gfc_match_name_C) | |
6638 | if (check_bind_name_identifier (&binding_label) != MATCH_YES) | |
6639 | return MATCH_ERROR; | |
6640 | } | |
a8b3b0b6 CR |
6641 | |
6642 | /* Get the required right paren. */ | |
6643 | if (gfc_match_char (')') != MATCH_YES) | |
6644 | { | |
6645 | gfc_error ("Missing closing paren for binding label at %C"); | |
6646 | return MATCH_ERROR; | |
6647 | } | |
6648 | ||
1eabf70a TB |
6649 | if (has_name_equals && !allow_binding_name) |
6650 | { | |
6651 | gfc_error ("No binding name is allowed in BIND(C) at %C"); | |
6652 | return MATCH_ERROR; | |
6653 | } | |
6654 | ||
6655 | if (has_name_equals && sym != NULL && sym->attr.dummy) | |
6656 | { | |
6657 | gfc_error ("For dummy procedure %s, no binding name is " | |
6658 | "allowed in BIND(C) at %C", sym->name); | |
6659 | return MATCH_ERROR; | |
6660 | } | |
6661 | ||
6662 | ||
a8b3b0b6 CR |
6663 | /* Save the binding label to the symbol. If sym is null, we're |
6664 | probably matching the typespec attributes of a declaration and | |
6665 | haven't gotten the name yet, and therefore, no symbol yet. */ | |
62603fae | 6666 | if (binding_label) |
a8b3b0b6 CR |
6667 | { |
6668 | if (sym != NULL) | |
62603fae | 6669 | sym->binding_label = binding_label; |
a8b3b0b6 | 6670 | else |
62603fae | 6671 | curr_binding_label = binding_label; |
a8b3b0b6 | 6672 | } |
1eabf70a | 6673 | else if (allow_binding_name) |
a8b3b0b6 CR |
6674 | { |
6675 | /* No binding label, but if symbol isn't null, we | |
1eabf70a TB |
6676 | can set the label for it here. |
6677 | If name="" or allow_binding_name is false, no C binding name is | |
1cc0e193 | 6678 | created. */ |
a8b3b0b6 | 6679 | if (sym != NULL && sym->name != NULL && has_name_equals == 0) |
62603fae | 6680 | sym->binding_label = IDENTIFIER_POINTER (get_identifier (sym->name)); |
a8b3b0b6 | 6681 | } |
9e1d712c | 6682 | |
129d15a3 JW |
6683 | if (has_name_equals && gfc_current_state () == COMP_INTERFACE |
6684 | && current_interface.type == INTERFACE_ABSTRACT) | |
9e1d712c TB |
6685 | { |
6686 | gfc_error ("NAME not allowed on BIND(C) for ABSTRACT INTERFACE at %C"); | |
6687 | return MATCH_ERROR; | |
6688 | } | |
6689 | ||
a8b3b0b6 CR |
6690 | return MATCH_YES; |
6691 | } | |
6692 | ||
6693 | ||
1f2959f0 | 6694 | /* Return nonzero if we're currently compiling a contained procedure. */ |
ddc9ce91 TS |
6695 | |
6696 | static int | |
6697 | contained_procedure (void) | |
6698 | { | |
083de129 | 6699 | gfc_state_data *s = gfc_state_stack; |
ddc9ce91 | 6700 | |
083de129 TB |
6701 | if ((s->state == COMP_SUBROUTINE || s->state == COMP_FUNCTION) |
6702 | && s->previous != NULL && s->previous->state == COMP_CONTAINS) | |
6703 | return 1; | |
ddc9ce91 TS |
6704 | |
6705 | return 0; | |
6706 | } | |
6707 | ||
d51347f9 | 6708 | /* Set the kind of each enumerator. The kind is selected such that it is |
25d8f0a2 TS |
6709 | interoperable with the corresponding C enumeration type, making |
6710 | sure that -fshort-enums is honored. */ | |
6711 | ||
6712 | static void | |
6713 | set_enum_kind(void) | |
6714 | { | |
6715 | enumerator_history *current_history = NULL; | |
6716 | int kind; | |
6717 | int i; | |
6718 | ||
6719 | if (max_enum == NULL || enum_history == NULL) | |
6720 | return; | |
6721 | ||
cab129d1 | 6722 | if (!flag_short_enums) |
d51347f9 TB |
6723 | return; |
6724 | ||
25d8f0a2 TS |
6725 | i = 0; |
6726 | do | |
6727 | { | |
6728 | kind = gfc_integer_kinds[i++].kind; | |
6729 | } | |
d51347f9 | 6730 | while (kind < gfc_c_int_kind |
25d8f0a2 TS |
6731 | && gfc_check_integer_range (max_enum->initializer->value.integer, |
6732 | kind) != ARITH_OK); | |
6733 | ||
6734 | current_history = enum_history; | |
6735 | while (current_history != NULL) | |
6736 | { | |
6737 | current_history->sym->ts.kind = kind; | |
6738 | current_history = current_history->next; | |
6739 | } | |
6740 | } | |
6741 | ||
636dff67 | 6742 | |
6de9cd9a | 6743 | /* Match any of the various end-block statements. Returns the type of |
9abe5e56 DK |
6744 | END to the caller. The END INTERFACE, END IF, END DO, END SELECT |
6745 | and END BLOCK statements cannot be replaced by a single END statement. */ | |
6de9cd9a DN |
6746 | |
6747 | match | |
636dff67 | 6748 | gfc_match_end (gfc_statement *st) |
6de9cd9a DN |
6749 | { |
6750 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6751 | gfc_compile_state state; | |
6752 | locus old_loc; | |
6753 | const char *block_name; | |
6754 | const char *target; | |
ddc9ce91 | 6755 | int eos_ok; |
6de9cd9a | 6756 | match m; |
0cab6b73 TK |
6757 | gfc_namespace *parent_ns, *ns, *prev_ns; |
6758 | gfc_namespace **nsp; | |
63af1586 | 6759 | bool abreviated_modproc_decl = false; |
874108a9 | 6760 | bool got_matching_end = false; |
6de9cd9a | 6761 | |
63645982 | 6762 | old_loc = gfc_current_locus; |
6de9cd9a DN |
6763 | if (gfc_match ("end") != MATCH_YES) |
6764 | return MATCH_NO; | |
6765 | ||
6766 | state = gfc_current_state (); | |
636dff67 SK |
6767 | block_name = gfc_current_block () == NULL |
6768 | ? NULL : gfc_current_block ()->name; | |
6de9cd9a | 6769 | |
03af1e4c | 6770 | switch (state) |
6de9cd9a | 6771 | { |
03af1e4c DK |
6772 | case COMP_ASSOCIATE: |
6773 | case COMP_BLOCK: | |
3a1fd30c | 6774 | if (!strncmp (block_name, "block@", strlen("block@"))) |
03af1e4c DK |
6775 | block_name = NULL; |
6776 | break; | |
6777 | ||
6778 | case COMP_CONTAINS: | |
6779 | case COMP_DERIVED_CONTAINS: | |
6de9cd9a | 6780 | state = gfc_state_stack->previous->state; |
636dff67 SK |
6781 | block_name = gfc_state_stack->previous->sym == NULL |
6782 | ? NULL : gfc_state_stack->previous->sym->name; | |
63af1586 PT |
6783 | abreviated_modproc_decl = gfc_state_stack->previous->sym |
6784 | && gfc_state_stack->previous->sym->abr_modproc_decl; | |
03af1e4c DK |
6785 | break; |
6786 | ||
6787 | default: | |
6788 | break; | |
6de9cd9a DN |
6789 | } |
6790 | ||
63af1586 PT |
6791 | if (!abreviated_modproc_decl) |
6792 | abreviated_modproc_decl = gfc_current_block () | |
6793 | && gfc_current_block ()->abr_modproc_decl; | |
4668d6f9 | 6794 | |
6de9cd9a DN |
6795 | switch (state) |
6796 | { | |
6797 | case COMP_NONE: | |
6798 | case COMP_PROGRAM: | |
6799 | *st = ST_END_PROGRAM; | |
6800 | target = " program"; | |
ddc9ce91 | 6801 | eos_ok = 1; |
6de9cd9a DN |
6802 | break; |
6803 | ||
6804 | case COMP_SUBROUTINE: | |
6805 | *st = ST_END_SUBROUTINE; | |
4668d6f9 | 6806 | if (!abreviated_modproc_decl) |
6de9cd9a | 6807 | target = " subroutine"; |
4668d6f9 PT |
6808 | else |
6809 | target = " procedure"; | |
ddc9ce91 | 6810 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
6811 | break; |
6812 | ||
6813 | case COMP_FUNCTION: | |
6814 | *st = ST_END_FUNCTION; | |
4668d6f9 | 6815 | if (!abreviated_modproc_decl) |
6de9cd9a | 6816 | target = " function"; |
4668d6f9 PT |
6817 | else |
6818 | target = " procedure"; | |
ddc9ce91 | 6819 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
6820 | break; |
6821 | ||
6822 | case COMP_BLOCK_DATA: | |
6823 | *st = ST_END_BLOCK_DATA; | |
6824 | target = " block data"; | |
ddc9ce91 | 6825 | eos_ok = 1; |
6de9cd9a DN |
6826 | break; |
6827 | ||
6828 | case COMP_MODULE: | |
6829 | *st = ST_END_MODULE; | |
6830 | target = " module"; | |
ddc9ce91 | 6831 | eos_ok = 1; |
6de9cd9a DN |
6832 | break; |
6833 | ||
4668d6f9 PT |
6834 | case COMP_SUBMODULE: |
6835 | *st = ST_END_SUBMODULE; | |
6836 | target = " submodule"; | |
6837 | eos_ok = 1; | |
6838 | break; | |
6839 | ||
6de9cd9a DN |
6840 | case COMP_INTERFACE: |
6841 | *st = ST_END_INTERFACE; | |
6842 | target = " interface"; | |
ddc9ce91 | 6843 | eos_ok = 0; |
6de9cd9a DN |
6844 | break; |
6845 | ||
f6288c24 FR |
6846 | case COMP_MAP: |
6847 | *st = ST_END_MAP; | |
6848 | target = " map"; | |
6849 | eos_ok = 0; | |
6850 | break; | |
6851 | ||
6852 | case COMP_UNION: | |
6853 | *st = ST_END_UNION; | |
6854 | target = " union"; | |
6855 | eos_ok = 0; | |
6856 | break; | |
6857 | ||
6858 | case COMP_STRUCTURE: | |
6859 | *st = ST_END_STRUCTURE; | |
6860 | target = " structure"; | |
6861 | eos_ok = 0; | |
6862 | break; | |
6863 | ||
6de9cd9a | 6864 | case COMP_DERIVED: |
30b608eb | 6865 | case COMP_DERIVED_CONTAINS: |
6de9cd9a DN |
6866 | *st = ST_END_TYPE; |
6867 | target = " type"; | |
ddc9ce91 | 6868 | eos_ok = 0; |
6de9cd9a DN |
6869 | break; |
6870 | ||
03af1e4c DK |
6871 | case COMP_ASSOCIATE: |
6872 | *st = ST_END_ASSOCIATE; | |
6873 | target = " associate"; | |
6874 | eos_ok = 0; | |
6875 | break; | |
6876 | ||
9abe5e56 DK |
6877 | case COMP_BLOCK: |
6878 | *st = ST_END_BLOCK; | |
6879 | target = " block"; | |
6880 | eos_ok = 0; | |
6881 | break; | |
6882 | ||
6de9cd9a DN |
6883 | case COMP_IF: |
6884 | *st = ST_ENDIF; | |
6885 | target = " if"; | |
ddc9ce91 | 6886 | eos_ok = 0; |
6de9cd9a DN |
6887 | break; |
6888 | ||
6889 | case COMP_DO: | |
8c6a85e3 | 6890 | case COMP_DO_CONCURRENT: |
6de9cd9a DN |
6891 | *st = ST_ENDDO; |
6892 | target = " do"; | |
ddc9ce91 | 6893 | eos_ok = 0; |
6de9cd9a DN |
6894 | break; |
6895 | ||
d0a4a61c TB |
6896 | case COMP_CRITICAL: |
6897 | *st = ST_END_CRITICAL; | |
6898 | target = " critical"; | |
6899 | eos_ok = 0; | |
6900 | break; | |
6901 | ||
6de9cd9a | 6902 | case COMP_SELECT: |
cf2b3c22 | 6903 | case COMP_SELECT_TYPE: |
6de9cd9a DN |
6904 | *st = ST_END_SELECT; |
6905 | target = " select"; | |
ddc9ce91 | 6906 | eos_ok = 0; |
6de9cd9a DN |
6907 | break; |
6908 | ||
6909 | case COMP_FORALL: | |
6910 | *st = ST_END_FORALL; | |
6911 | target = " forall"; | |
ddc9ce91 | 6912 | eos_ok = 0; |
6de9cd9a DN |
6913 | break; |
6914 | ||
6915 | case COMP_WHERE: | |
6916 | *st = ST_END_WHERE; | |
6917 | target = " where"; | |
ddc9ce91 | 6918 | eos_ok = 0; |
6de9cd9a DN |
6919 | break; |
6920 | ||
25d8f0a2 TS |
6921 | case COMP_ENUM: |
6922 | *st = ST_END_ENUM; | |
6923 | target = " enum"; | |
6924 | eos_ok = 0; | |
6925 | last_initializer = NULL; | |
6926 | set_enum_kind (); | |
6927 | gfc_free_enum_history (); | |
6928 | break; | |
6929 | ||
6de9cd9a DN |
6930 | default: |
6931 | gfc_error ("Unexpected END statement at %C"); | |
6932 | goto cleanup; | |
6933 | } | |
6934 | ||
3a43b5b3 | 6935 | old_loc = gfc_current_locus; |
6de9cd9a DN |
6936 | if (gfc_match_eos () == MATCH_YES) |
6937 | { | |
272001a2 TB |
6938 | if (!eos_ok && (*st == ST_END_SUBROUTINE || *st == ST_END_FUNCTION)) |
6939 | { | |
524af0d6 | 6940 | if (!gfc_notify_std (GFC_STD_F2008, "END statement " |
70112e2a | 6941 | "instead of %s statement at %L", |
4668d6f9 PT |
6942 | abreviated_modproc_decl ? "END PROCEDURE" |
6943 | : gfc_ascii_statement(*st), &old_loc)) | |
272001a2 TB |
6944 | goto cleanup; |
6945 | } | |
6946 | else if (!eos_ok) | |
6de9cd9a | 6947 | { |
66e4ab31 | 6948 | /* We would have required END [something]. */ |
59ce85b5 TS |
6949 | gfc_error ("%s statement expected at %L", |
6950 | gfc_ascii_statement (*st), &old_loc); | |
6de9cd9a DN |
6951 | goto cleanup; |
6952 | } | |
6953 | ||
6954 | return MATCH_YES; | |
6955 | } | |
6956 | ||
6957 | /* Verify that we've got the sort of end-block that we're expecting. */ | |
6958 | if (gfc_match (target) != MATCH_YES) | |
6959 | { | |
4668d6f9 PT |
6960 | gfc_error ("Expecting %s statement at %L", abreviated_modproc_decl |
6961 | ? "END PROCEDURE" : gfc_ascii_statement(*st), &old_loc); | |
6de9cd9a DN |
6962 | goto cleanup; |
6963 | } | |
874108a9 AV |
6964 | else |
6965 | got_matching_end = true; | |
6de9cd9a | 6966 | |
3a43b5b3 | 6967 | old_loc = gfc_current_locus; |
6de9cd9a DN |
6968 | /* If we're at the end, make sure a block name wasn't required. */ |
6969 | if (gfc_match_eos () == MATCH_YES) | |
6970 | { | |
6971 | ||
690af379 | 6972 | if (*st != ST_ENDDO && *st != ST_ENDIF && *st != ST_END_SELECT |
d0a4a61c | 6973 | && *st != ST_END_FORALL && *st != ST_END_WHERE && *st != ST_END_BLOCK |
03af1e4c | 6974 | && *st != ST_END_ASSOCIATE && *st != ST_END_CRITICAL) |
6de9cd9a DN |
6975 | return MATCH_YES; |
6976 | ||
9abe5e56 | 6977 | if (!block_name) |
6de9cd9a DN |
6978 | return MATCH_YES; |
6979 | ||
c4100eae | 6980 | gfc_error ("Expected block name of %qs in %s statement at %L", |
3a43b5b3 | 6981 | block_name, gfc_ascii_statement (*st), &old_loc); |
6de9cd9a DN |
6982 | |
6983 | return MATCH_ERROR; | |
6984 | } | |
6985 | ||
6986 | /* END INTERFACE has a special handler for its several possible endings. */ | |
6987 | if (*st == ST_END_INTERFACE) | |
6988 | return gfc_match_end_interface (); | |
6989 | ||
66e4ab31 SK |
6990 | /* We haven't hit the end of statement, so what is left must be an |
6991 | end-name. */ | |
6de9cd9a DN |
6992 | m = gfc_match_space (); |
6993 | if (m == MATCH_YES) | |
6994 | m = gfc_match_name (name); | |
6995 | ||
6996 | if (m == MATCH_NO) | |
6997 | gfc_error ("Expected terminating name at %C"); | |
6998 | if (m != MATCH_YES) | |
6999 | goto cleanup; | |
7000 | ||
7001 | if (block_name == NULL) | |
7002 | goto syntax; | |
7003 | ||
3d5dc929 PT |
7004 | /* We have to pick out the declared submodule name from the composite |
7005 | required by F2008:11.2.3 para 2, which ends in the declared name. */ | |
7006 | if (state == COMP_SUBMODULE) | |
7007 | block_name = strchr (block_name, '.') + 1; | |
7008 | ||
3070bab4 | 7009 | if (strcmp (name, block_name) != 0 && strcmp (block_name, "ppr@") != 0) |
6de9cd9a | 7010 | { |
c4100eae | 7011 | gfc_error ("Expected label %qs for %s statement at %C", block_name, |
6de9cd9a DN |
7012 | gfc_ascii_statement (*st)); |
7013 | goto cleanup; | |
7014 | } | |
3070bab4 JW |
7015 | /* Procedure pointer as function result. */ |
7016 | else if (strcmp (block_name, "ppr@") == 0 | |
7017 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) != 0) | |
7018 | { | |
c4100eae | 7019 | gfc_error ("Expected label %qs for %s statement at %C", |
3070bab4 JW |
7020 | gfc_current_block ()->ns->proc_name->name, |
7021 | gfc_ascii_statement (*st)); | |
7022 | goto cleanup; | |
7023 | } | |
6de9cd9a DN |
7024 | |
7025 | if (gfc_match_eos () == MATCH_YES) | |
7026 | return MATCH_YES; | |
7027 | ||
7028 | syntax: | |
7029 | gfc_syntax_error (*st); | |
7030 | ||
7031 | cleanup: | |
63645982 | 7032 | gfc_current_locus = old_loc; |
0cab6b73 TK |
7033 | |
7034 | /* If we are missing an END BLOCK, we created a half-ready namespace. | |
7035 | Remove it from the parent namespace's sibling list. */ | |
7036 | ||
874108a9 | 7037 | while (state == COMP_BLOCK && !got_matching_end) |
0cab6b73 TK |
7038 | { |
7039 | parent_ns = gfc_current_ns->parent; | |
7040 | ||
7041 | nsp = &(gfc_state_stack->previous->tail->ext.block.ns); | |
7042 | ||
7043 | prev_ns = NULL; | |
7044 | ns = *nsp; | |
7045 | while (ns) | |
7046 | { | |
7047 | if (ns == gfc_current_ns) | |
7048 | { | |
7049 | if (prev_ns == NULL) | |
7050 | *nsp = NULL; | |
7051 | else | |
7052 | prev_ns->sibling = ns->sibling; | |
7053 | } | |
7054 | prev_ns = ns; | |
7055 | ns = ns->sibling; | |
7056 | } | |
874108a9 | 7057 | |
0cab6b73 TK |
7058 | gfc_free_namespace (gfc_current_ns); |
7059 | gfc_current_ns = parent_ns; | |
9f7ba208 LK |
7060 | gfc_state_stack = gfc_state_stack->previous; |
7061 | state = gfc_current_state (); | |
0cab6b73 TK |
7062 | } |
7063 | ||
6de9cd9a DN |
7064 | return MATCH_ERROR; |
7065 | } | |
7066 | ||
7067 | ||
7068 | ||
7069 | /***************** Attribute declaration statements ****************/ | |
7070 | ||
7071 | /* Set the attribute of a single variable. */ | |
7072 | ||
7073 | static match | |
7074 | attr_decl1 (void) | |
7075 | { | |
7076 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7077 | gfc_array_spec *as; | |
97440db5 ML |
7078 | |
7079 | /* Workaround -Wmaybe-uninitialized false positive during | |
7080 | profiledbootstrap by initializing them. */ | |
7081 | gfc_symbol *sym = NULL; | |
6de9cd9a DN |
7082 | locus var_locus; |
7083 | match m; | |
7084 | ||
7085 | as = NULL; | |
7086 | ||
7087 | m = gfc_match_name (name); | |
7088 | if (m != MATCH_YES) | |
7089 | goto cleanup; | |
7090 | ||
08a6b8e0 | 7091 | if (find_special (name, &sym, false)) |
6de9cd9a DN |
7092 | return MATCH_ERROR; |
7093 | ||
524af0d6 | 7094 | if (!check_function_name (name)) |
bb9de0c4 JW |
7095 | { |
7096 | m = MATCH_ERROR; | |
7097 | goto cleanup; | |
7098 | } | |
f5acf0f2 | 7099 | |
63645982 | 7100 | var_locus = gfc_current_locus; |
6de9cd9a DN |
7101 | |
7102 | /* Deal with possible array specification for certain attributes. */ | |
7103 | if (current_attr.dimension | |
be59db2d | 7104 | || current_attr.codimension |
6de9cd9a DN |
7105 | || current_attr.allocatable |
7106 | || current_attr.pointer | |
7107 | || current_attr.target) | |
7108 | { | |
be59db2d TB |
7109 | m = gfc_match_array_spec (&as, !current_attr.codimension, |
7110 | !current_attr.dimension | |
7111 | && !current_attr.pointer | |
7112 | && !current_attr.target); | |
6de9cd9a DN |
7113 | if (m == MATCH_ERROR) |
7114 | goto cleanup; | |
7115 | ||
7116 | if (current_attr.dimension && m == MATCH_NO) | |
7117 | { | |
636dff67 SK |
7118 | gfc_error ("Missing array specification at %L in DIMENSION " |
7119 | "statement", &var_locus); | |
6de9cd9a DN |
7120 | m = MATCH_ERROR; |
7121 | goto cleanup; | |
7122 | } | |
7123 | ||
1283ab12 TB |
7124 | if (current_attr.dimension && sym->value) |
7125 | { | |
7126 | gfc_error ("Dimensions specified for %s at %L after its " | |
bd2c6270 | 7127 | "initialization", sym->name, &var_locus); |
1283ab12 TB |
7128 | m = MATCH_ERROR; |
7129 | goto cleanup; | |
7130 | } | |
7131 | ||
be59db2d TB |
7132 | if (current_attr.codimension && m == MATCH_NO) |
7133 | { | |
7134 | gfc_error ("Missing array specification at %L in CODIMENSION " | |
7135 | "statement", &var_locus); | |
7136 | m = MATCH_ERROR; | |
7137 | goto cleanup; | |
7138 | } | |
7139 | ||
6de9cd9a DN |
7140 | if ((current_attr.allocatable || current_attr.pointer) |
7141 | && (m == MATCH_YES) && (as->type != AS_DEFERRED)) | |
7142 | { | |
636dff67 | 7143 | gfc_error ("Array specification must be deferred at %L", &var_locus); |
6de9cd9a DN |
7144 | m = MATCH_ERROR; |
7145 | goto cleanup; | |
7146 | } | |
7147 | } | |
7148 | ||
2e23972e JW |
7149 | /* Update symbol table. DIMENSION attribute is set in |
7150 | gfc_set_array_spec(). For CLASS variables, this must be applied | |
b04533af | 7151 | to the first component, or '_data' field. */ |
d40477b4 | 7152 | if (sym->ts.type == BT_CLASS && sym->ts.u.derived->attr.is_class) |
6de9cd9a | 7153 | { |
524af0d6 | 7154 | if (!gfc_copy_attr (&CLASS_DATA(sym)->attr, ¤t_attr, &var_locus)) |
2e23972e JW |
7155 | { |
7156 | m = MATCH_ERROR; | |
7157 | goto cleanup; | |
7158 | } | |
2e23972e JW |
7159 | } |
7160 | else | |
7161 | { | |
be59db2d | 7162 | if (current_attr.dimension == 0 && current_attr.codimension == 0 |
524af0d6 | 7163 | && !gfc_copy_attr (&sym->attr, ¤t_attr, &var_locus)) |
2e23972e JW |
7164 | { |
7165 | m = MATCH_ERROR; | |
7166 | goto cleanup; | |
7167 | } | |
6de9cd9a | 7168 | } |
f5acf0f2 | 7169 | |
528622fd | 7170 | if (sym->ts.type == BT_CLASS |
9b6da3c7 | 7171 | && !gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as)) |
96d9b22c JW |
7172 | { |
7173 | m = MATCH_ERROR; | |
7174 | goto cleanup; | |
7175 | } | |
6de9cd9a | 7176 | |
524af0d6 | 7177 | if (!gfc_set_array_spec (sym, as, &var_locus)) |
6de9cd9a DN |
7178 | { |
7179 | m = MATCH_ERROR; | |
7180 | goto cleanup; | |
7181 | } | |
d51347f9 | 7182 | |
83d890b9 AL |
7183 | if (sym->attr.cray_pointee && sym->as != NULL) |
7184 | { | |
7185 | /* Fix the array spec. */ | |
f5acf0f2 | 7186 | m = gfc_mod_pointee_as (sym->as); |
83d890b9 AL |
7187 | if (m == MATCH_ERROR) |
7188 | goto cleanup; | |
7189 | } | |
6de9cd9a | 7190 | |
524af0d6 | 7191 | if (!gfc_add_attribute (&sym->attr, &var_locus)) |
1902704e PT |
7192 | { |
7193 | m = MATCH_ERROR; | |
7194 | goto cleanup; | |
7195 | } | |
7196 | ||
6de9cd9a DN |
7197 | if ((current_attr.external || current_attr.intrinsic) |
7198 | && sym->attr.flavor != FL_PROCEDURE | |
524af0d6 | 7199 | && !gfc_add_flavor (&sym->attr, FL_PROCEDURE, sym->name, NULL)) |
6de9cd9a DN |
7200 | { |
7201 | m = MATCH_ERROR; | |
7202 | goto cleanup; | |
7203 | } | |
7204 | ||
3070bab4 JW |
7205 | add_hidden_procptr_result (sym); |
7206 | ||
6de9cd9a DN |
7207 | return MATCH_YES; |
7208 | ||
7209 | cleanup: | |
7210 | gfc_free_array_spec (as); | |
7211 | return m; | |
7212 | } | |
7213 | ||
7214 | ||
7215 | /* Generic attribute declaration subroutine. Used for attributes that | |
7216 | just have a list of names. */ | |
7217 | ||
7218 | static match | |
7219 | attr_decl (void) | |
7220 | { | |
7221 | match m; | |
7222 | ||
7223 | /* Gobble the optional double colon, by simply ignoring the result | |
7224 | of gfc_match(). */ | |
7225 | gfc_match (" ::"); | |
7226 | ||
7227 | for (;;) | |
7228 | { | |
7229 | m = attr_decl1 (); | |
7230 | if (m != MATCH_YES) | |
7231 | break; | |
7232 | ||
7233 | if (gfc_match_eos () == MATCH_YES) | |
7234 | { | |
7235 | m = MATCH_YES; | |
7236 | break; | |
7237 | } | |
7238 | ||
7239 | if (gfc_match_char (',') != MATCH_YES) | |
7240 | { | |
7241 | gfc_error ("Unexpected character in variable list at %C"); | |
7242 | m = MATCH_ERROR; | |
7243 | break; | |
7244 | } | |
7245 | } | |
7246 | ||
7247 | return m; | |
7248 | } | |
7249 | ||
7250 | ||
83d890b9 AL |
7251 | /* This routine matches Cray Pointer declarations of the form: |
7252 | pointer ( <pointer>, <pointee> ) | |
7253 | or | |
d51347f9 TB |
7254 | pointer ( <pointer1>, <pointee1> ), ( <pointer2>, <pointee2> ), ... |
7255 | The pointer, if already declared, should be an integer. Otherwise, we | |
83d890b9 AL |
7256 | set it as BT_INTEGER with kind gfc_index_integer_kind. The pointee may |
7257 | be either a scalar, or an array declaration. No space is allocated for | |
d51347f9 | 7258 | the pointee. For the statement |
83d890b9 AL |
7259 | pointer (ipt, ar(10)) |
7260 | any subsequent uses of ar will be translated (in C-notation) as | |
d51347f9 | 7261 | ar(i) => ((<type> *) ipt)(i) |
b122dc6a | 7262 | After gimplification, pointee variable will disappear in the code. */ |
83d890b9 AL |
7263 | |
7264 | static match | |
7265 | cray_pointer_decl (void) | |
7266 | { | |
7267 | match m; | |
be59db2d | 7268 | gfc_array_spec *as = NULL; |
83d890b9 AL |
7269 | gfc_symbol *cptr; /* Pointer symbol. */ |
7270 | gfc_symbol *cpte; /* Pointee symbol. */ | |
7271 | locus var_locus; | |
7272 | bool done = false; | |
7273 | ||
7274 | while (!done) | |
7275 | { | |
7276 | if (gfc_match_char ('(') != MATCH_YES) | |
7277 | { | |
a4d9b221 | 7278 | gfc_error ("Expected %<(%> at %C"); |
d51347f9 | 7279 | return MATCH_ERROR; |
83d890b9 | 7280 | } |
d51347f9 | 7281 | |
83d890b9 AL |
7282 | /* Match pointer. */ |
7283 | var_locus = gfc_current_locus; | |
7284 | gfc_clear_attr (¤t_attr); | |
7285 | gfc_add_cray_pointer (¤t_attr, &var_locus); | |
7286 | current_ts.type = BT_INTEGER; | |
7287 | current_ts.kind = gfc_index_integer_kind; | |
7288 | ||
d51347f9 | 7289 | m = gfc_match_symbol (&cptr, 0); |
83d890b9 AL |
7290 | if (m != MATCH_YES) |
7291 | { | |
7292 | gfc_error ("Expected variable name at %C"); | |
7293 | return m; | |
7294 | } | |
d51347f9 | 7295 | |
524af0d6 | 7296 | if (!gfc_add_cray_pointer (&cptr->attr, &var_locus)) |
83d890b9 AL |
7297 | return MATCH_ERROR; |
7298 | ||
d51347f9 | 7299 | gfc_set_sym_referenced (cptr); |
83d890b9 AL |
7300 | |
7301 | if (cptr->ts.type == BT_UNKNOWN) /* Override the type, if necessary. */ | |
7302 | { | |
7303 | cptr->ts.type = BT_INTEGER; | |
d51347f9 | 7304 | cptr->ts.kind = gfc_index_integer_kind; |
83d890b9 AL |
7305 | } |
7306 | else if (cptr->ts.type != BT_INTEGER) | |
7307 | { | |
e25a0da3 | 7308 | gfc_error ("Cray pointer at %C must be an integer"); |
83d890b9 AL |
7309 | return MATCH_ERROR; |
7310 | } | |
7311 | else if (cptr->ts.kind < gfc_index_integer_kind) | |
db30e21c | 7312 | gfc_warning (0, "Cray pointer at %C has %d bytes of precision;" |
e25a0da3 | 7313 | " memory addresses require %d bytes", |
636dff67 | 7314 | cptr->ts.kind, gfc_index_integer_kind); |
83d890b9 AL |
7315 | |
7316 | if (gfc_match_char (',') != MATCH_YES) | |
7317 | { | |
7318 | gfc_error ("Expected \",\" at %C"); | |
d51347f9 | 7319 | return MATCH_ERROR; |
83d890b9 AL |
7320 | } |
7321 | ||
d51347f9 | 7322 | /* Match Pointee. */ |
83d890b9 AL |
7323 | var_locus = gfc_current_locus; |
7324 | gfc_clear_attr (¤t_attr); | |
7325 | gfc_add_cray_pointee (¤t_attr, &var_locus); | |
7326 | current_ts.type = BT_UNKNOWN; | |
7327 | current_ts.kind = 0; | |
7328 | ||
7329 | m = gfc_match_symbol (&cpte, 0); | |
7330 | if (m != MATCH_YES) | |
7331 | { | |
7332 | gfc_error ("Expected variable name at %C"); | |
7333 | return m; | |
7334 | } | |
d51347f9 | 7335 | |
83d890b9 | 7336 | /* Check for an optional array spec. */ |
be59db2d | 7337 | m = gfc_match_array_spec (&as, true, false); |
83d890b9 AL |
7338 | if (m == MATCH_ERROR) |
7339 | { | |
7340 | gfc_free_array_spec (as); | |
7341 | return m; | |
7342 | } | |
7343 | else if (m == MATCH_NO) | |
7344 | { | |
7345 | gfc_free_array_spec (as); | |
7346 | as = NULL; | |
f5acf0f2 | 7347 | } |
83d890b9 | 7348 | |
524af0d6 | 7349 | if (!gfc_add_cray_pointee (&cpte->attr, &var_locus)) |
83d890b9 AL |
7350 | return MATCH_ERROR; |
7351 | ||
7352 | gfc_set_sym_referenced (cpte); | |
7353 | ||
7354 | if (cpte->as == NULL) | |
7355 | { | |
524af0d6 | 7356 | if (!gfc_set_array_spec (cpte, as, &var_locus)) |
83d890b9 AL |
7357 | gfc_internal_error ("Couldn't set Cray pointee array spec."); |
7358 | } | |
7359 | else if (as != NULL) | |
7360 | { | |
e25a0da3 | 7361 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
7362 | gfc_free_array_spec (as); |
7363 | return MATCH_ERROR; | |
7364 | } | |
f5acf0f2 | 7365 | |
83d890b9 | 7366 | as = NULL; |
f5acf0f2 | 7367 | |
83d890b9 AL |
7368 | if (cpte->as != NULL) |
7369 | { | |
7370 | /* Fix array spec. */ | |
7371 | m = gfc_mod_pointee_as (cpte->as); | |
7372 | if (m == MATCH_ERROR) | |
7373 | return m; | |
f5acf0f2 PT |
7374 | } |
7375 | ||
83d890b9 | 7376 | /* Point the Pointee at the Pointer. */ |
b122dc6a | 7377 | cpte->cp_pointer = cptr; |
83d890b9 AL |
7378 | |
7379 | if (gfc_match_char (')') != MATCH_YES) | |
7380 | { | |
7381 | gfc_error ("Expected \")\" at %C"); | |
f5acf0f2 | 7382 | return MATCH_ERROR; |
83d890b9 AL |
7383 | } |
7384 | m = gfc_match_char (','); | |
7385 | if (m != MATCH_YES) | |
7386 | done = true; /* Stop searching for more declarations. */ | |
7387 | ||
7388 | } | |
f5acf0f2 | 7389 | |
83d890b9 AL |
7390 | if (m == MATCH_ERROR /* Failed when trying to find ',' above. */ |
7391 | || gfc_match_eos () != MATCH_YES) | |
7392 | { | |
a4d9b221 | 7393 | gfc_error ("Expected %<,%> or end of statement at %C"); |
83d890b9 AL |
7394 | return MATCH_ERROR; |
7395 | } | |
7396 | return MATCH_YES; | |
7397 | } | |
7398 | ||
7399 | ||
6de9cd9a DN |
7400 | match |
7401 | gfc_match_external (void) | |
7402 | { | |
7403 | ||
7404 | gfc_clear_attr (¤t_attr); | |
1902704e | 7405 | current_attr.external = 1; |
6de9cd9a DN |
7406 | |
7407 | return attr_decl (); | |
7408 | } | |
7409 | ||
7410 | ||
6de9cd9a DN |
7411 | match |
7412 | gfc_match_intent (void) | |
7413 | { | |
7414 | sym_intent intent; | |
7415 | ||
9abe5e56 DK |
7416 | /* This is not allowed within a BLOCK construct! */ |
7417 | if (gfc_current_state () == COMP_BLOCK) | |
7418 | { | |
7419 | gfc_error ("INTENT is not allowed inside of BLOCK at %C"); | |
7420 | return MATCH_ERROR; | |
7421 | } | |
7422 | ||
6de9cd9a DN |
7423 | intent = match_intent_spec (); |
7424 | if (intent == INTENT_UNKNOWN) | |
7425 | return MATCH_ERROR; | |
7426 | ||
7427 | gfc_clear_attr (¤t_attr); | |
1902704e | 7428 | current_attr.intent = intent; |
6de9cd9a DN |
7429 | |
7430 | return attr_decl (); | |
7431 | } | |
7432 | ||
7433 | ||
7434 | match | |
7435 | gfc_match_intrinsic (void) | |
7436 | { | |
7437 | ||
7438 | gfc_clear_attr (¤t_attr); | |
1902704e | 7439 | current_attr.intrinsic = 1; |
6de9cd9a DN |
7440 | |
7441 | return attr_decl (); | |
7442 | } | |
7443 | ||
7444 | ||
7445 | match | |
7446 | gfc_match_optional (void) | |
7447 | { | |
9abe5e56 DK |
7448 | /* This is not allowed within a BLOCK construct! */ |
7449 | if (gfc_current_state () == COMP_BLOCK) | |
7450 | { | |
7451 | gfc_error ("OPTIONAL is not allowed inside of BLOCK at %C"); | |
7452 | return MATCH_ERROR; | |
7453 | } | |
6de9cd9a DN |
7454 | |
7455 | gfc_clear_attr (¤t_attr); | |
1902704e | 7456 | current_attr.optional = 1; |
6de9cd9a DN |
7457 | |
7458 | return attr_decl (); | |
7459 | } | |
7460 | ||
7461 | ||
7462 | match | |
7463 | gfc_match_pointer (void) | |
7464 | { | |
83d890b9 | 7465 | gfc_gobble_whitespace (); |
8fc541d3 | 7466 | if (gfc_peek_ascii_char () == '(') |
83d890b9 | 7467 | { |
c61819ff | 7468 | if (!flag_cray_pointer) |
83d890b9 | 7469 | { |
636dff67 SK |
7470 | gfc_error ("Cray pointer declaration at %C requires -fcray-pointer " |
7471 | "flag"); | |
83d890b9 AL |
7472 | return MATCH_ERROR; |
7473 | } | |
7474 | return cray_pointer_decl (); | |
7475 | } | |
7476 | else | |
7477 | { | |
7478 | gfc_clear_attr (¤t_attr); | |
1902704e | 7479 | current_attr.pointer = 1; |
f5acf0f2 | 7480 | |
83d890b9 AL |
7481 | return attr_decl (); |
7482 | } | |
6de9cd9a DN |
7483 | } |
7484 | ||
7485 | ||
7486 | match | |
7487 | gfc_match_allocatable (void) | |
7488 | { | |
6de9cd9a | 7489 | gfc_clear_attr (¤t_attr); |
1902704e | 7490 | current_attr.allocatable = 1; |
6de9cd9a DN |
7491 | |
7492 | return attr_decl (); | |
7493 | } | |
7494 | ||
7495 | ||
be59db2d TB |
7496 | match |
7497 | gfc_match_codimension (void) | |
7498 | { | |
7499 | gfc_clear_attr (¤t_attr); | |
7500 | current_attr.codimension = 1; | |
7501 | ||
7502 | return attr_decl (); | |
7503 | } | |
7504 | ||
7505 | ||
fe4e525c TB |
7506 | match |
7507 | gfc_match_contiguous (void) | |
7508 | { | |
524af0d6 | 7509 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS statement at %C")) |
fe4e525c TB |
7510 | return MATCH_ERROR; |
7511 | ||
7512 | gfc_clear_attr (¤t_attr); | |
7513 | current_attr.contiguous = 1; | |
7514 | ||
7515 | return attr_decl (); | |
7516 | } | |
7517 | ||
7518 | ||
6de9cd9a DN |
7519 | match |
7520 | gfc_match_dimension (void) | |
7521 | { | |
6de9cd9a | 7522 | gfc_clear_attr (¤t_attr); |
1902704e | 7523 | current_attr.dimension = 1; |
6de9cd9a DN |
7524 | |
7525 | return attr_decl (); | |
7526 | } | |
7527 | ||
7528 | ||
7529 | match | |
7530 | gfc_match_target (void) | |
7531 | { | |
6de9cd9a | 7532 | gfc_clear_attr (¤t_attr); |
1902704e | 7533 | current_attr.target = 1; |
6de9cd9a DN |
7534 | |
7535 | return attr_decl (); | |
7536 | } | |
7537 | ||
7538 | ||
7539 | /* Match the list of entities being specified in a PUBLIC or PRIVATE | |
7540 | statement. */ | |
7541 | ||
7542 | static match | |
7543 | access_attr_decl (gfc_statement st) | |
7544 | { | |
7545 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7546 | interface_type type; | |
7547 | gfc_user_op *uop; | |
c3f34952 | 7548 | gfc_symbol *sym, *dt_sym; |
a1ee985f | 7549 | gfc_intrinsic_op op; |
6de9cd9a DN |
7550 | match m; |
7551 | ||
7552 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7553 | goto done; | |
7554 | ||
7555 | for (;;) | |
7556 | { | |
a1ee985f | 7557 | m = gfc_match_generic_spec (&type, name, &op); |
6de9cd9a DN |
7558 | if (m == MATCH_NO) |
7559 | goto syntax; | |
7560 | if (m == MATCH_ERROR) | |
7561 | return MATCH_ERROR; | |
7562 | ||
7563 | switch (type) | |
7564 | { | |
7565 | case INTERFACE_NAMELESS: | |
9e1d712c | 7566 | case INTERFACE_ABSTRACT: |
6de9cd9a DN |
7567 | goto syntax; |
7568 | ||
7569 | case INTERFACE_GENERIC: | |
e73d3ca6 | 7570 | case INTERFACE_DTIO: |
6de9cd9a DN |
7571 | if (gfc_get_symbol (name, NULL, &sym)) |
7572 | goto done; | |
7573 | ||
70112e2a PT |
7574 | if (!gfc_add_access (&sym->attr, |
7575 | (st == ST_PUBLIC) | |
7576 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
524af0d6 | 7577 | sym->name, NULL)) |
6de9cd9a DN |
7578 | return MATCH_ERROR; |
7579 | ||
c3f34952 | 7580 | if (sym->attr.generic && (dt_sym = gfc_find_dt_in_generic (sym)) |
70112e2a PT |
7581 | && !gfc_add_access (&dt_sym->attr, |
7582 | (st == ST_PUBLIC) | |
7583 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
524af0d6 | 7584 | sym->name, NULL)) |
c3f34952 TB |
7585 | return MATCH_ERROR; |
7586 | ||
6de9cd9a DN |
7587 | break; |
7588 | ||
7589 | case INTERFACE_INTRINSIC_OP: | |
a1ee985f | 7590 | if (gfc_current_ns->operator_access[op] == ACCESS_UNKNOWN) |
6de9cd9a | 7591 | { |
fb03a37e TK |
7592 | gfc_intrinsic_op other_op; |
7593 | ||
a1ee985f | 7594 | gfc_current_ns->operator_access[op] = |
6de9cd9a | 7595 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; |
fb03a37e TK |
7596 | |
7597 | /* Handle the case if there is another op with the same | |
7598 | function, for INTRINSIC_EQ vs. INTRINSIC_EQ_OS and so on. */ | |
7599 | other_op = gfc_equivalent_op (op); | |
7600 | ||
7601 | if (other_op != INTRINSIC_NONE) | |
7602 | gfc_current_ns->operator_access[other_op] = | |
7603 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
7604 | ||
6de9cd9a DN |
7605 | } |
7606 | else | |
7607 | { | |
7608 | gfc_error ("Access specification of the %s operator at %C has " | |
a1ee985f | 7609 | "already been specified", gfc_op2string (op)); |
6de9cd9a DN |
7610 | goto done; |
7611 | } | |
7612 | ||
7613 | break; | |
7614 | ||
7615 | case INTERFACE_USER_OP: | |
7616 | uop = gfc_get_uop (name); | |
7617 | ||
7618 | if (uop->access == ACCESS_UNKNOWN) | |
7619 | { | |
636dff67 SK |
7620 | uop->access = (st == ST_PUBLIC) |
7621 | ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
6de9cd9a DN |
7622 | } |
7623 | else | |
7624 | { | |
636dff67 SK |
7625 | gfc_error ("Access specification of the .%s. operator at %C " |
7626 | "has already been specified", sym->name); | |
6de9cd9a DN |
7627 | goto done; |
7628 | } | |
7629 | ||
7630 | break; | |
7631 | } | |
7632 | ||
7633 | if (gfc_match_char (',') == MATCH_NO) | |
7634 | break; | |
7635 | } | |
7636 | ||
7637 | if (gfc_match_eos () != MATCH_YES) | |
7638 | goto syntax; | |
7639 | return MATCH_YES; | |
7640 | ||
7641 | syntax: | |
7642 | gfc_syntax_error (st); | |
7643 | ||
7644 | done: | |
7645 | return MATCH_ERROR; | |
7646 | } | |
7647 | ||
7648 | ||
ee7e677f TB |
7649 | match |
7650 | gfc_match_protected (void) | |
7651 | { | |
7652 | gfc_symbol *sym; | |
7653 | match m; | |
7654 | ||
73641c88 SK |
7655 | if (!gfc_current_ns->proc_name |
7656 | || gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
ee7e677f TB |
7657 | { |
7658 | gfc_error ("PROTECTED at %C only allowed in specification " | |
7659 | "part of a module"); | |
7660 | return MATCH_ERROR; | |
7661 | ||
7662 | } | |
7663 | ||
524af0d6 | 7664 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED statement at %C")) |
ee7e677f TB |
7665 | return MATCH_ERROR; |
7666 | ||
7667 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7668 | { | |
7669 | return MATCH_ERROR; | |
7670 | } | |
7671 | ||
7672 | if (gfc_match_eos () == MATCH_YES) | |
7673 | goto syntax; | |
7674 | ||
7675 | for(;;) | |
7676 | { | |
7677 | m = gfc_match_symbol (&sym, 0); | |
7678 | switch (m) | |
7679 | { | |
7680 | case MATCH_YES: | |
524af0d6 | 7681 | if (!gfc_add_protected (&sym->attr, sym->name, &gfc_current_locus)) |
ee7e677f TB |
7682 | return MATCH_ERROR; |
7683 | goto next_item; | |
7684 | ||
7685 | case MATCH_NO: | |
7686 | break; | |
7687 | ||
7688 | case MATCH_ERROR: | |
7689 | return MATCH_ERROR; | |
7690 | } | |
7691 | ||
7692 | next_item: | |
7693 | if (gfc_match_eos () == MATCH_YES) | |
7694 | break; | |
7695 | if (gfc_match_char (',') != MATCH_YES) | |
7696 | goto syntax; | |
7697 | } | |
7698 | ||
7699 | return MATCH_YES; | |
7700 | ||
7701 | syntax: | |
7702 | gfc_error ("Syntax error in PROTECTED statement at %C"); | |
7703 | return MATCH_ERROR; | |
7704 | } | |
7705 | ||
7706 | ||
86bf520d | 7707 | /* The PRIVATE statement is a bit weird in that it can be an attribute |
df2fba9e | 7708 | declaration, but also works as a standalone statement inside of a |
6de9cd9a DN |
7709 | type declaration or a module. */ |
7710 | ||
7711 | match | |
636dff67 | 7712 | gfc_match_private (gfc_statement *st) |
6de9cd9a DN |
7713 | { |
7714 | ||
7715 | if (gfc_match ("private") != MATCH_YES) | |
7716 | return MATCH_NO; | |
7717 | ||
d51347f9 | 7718 | if (gfc_current_state () != COMP_MODULE |
30b608eb DK |
7719 | && !(gfc_current_state () == COMP_DERIVED |
7720 | && gfc_state_stack->previous | |
7721 | && gfc_state_stack->previous->state == COMP_MODULE) | |
7722 | && !(gfc_current_state () == COMP_DERIVED_CONTAINS | |
7723 | && gfc_state_stack->previous && gfc_state_stack->previous->previous | |
7724 | && gfc_state_stack->previous->previous->state == COMP_MODULE)) | |
d51347f9 TB |
7725 | { |
7726 | gfc_error ("PRIVATE statement at %C is only allowed in the " | |
7727 | "specification part of a module"); | |
7728 | return MATCH_ERROR; | |
7729 | } | |
7730 | ||
6de9cd9a DN |
7731 | if (gfc_current_state () == COMP_DERIVED) |
7732 | { | |
7733 | if (gfc_match_eos () == MATCH_YES) | |
7734 | { | |
7735 | *st = ST_PRIVATE; | |
7736 | return MATCH_YES; | |
7737 | } | |
7738 | ||
7739 | gfc_syntax_error (ST_PRIVATE); | |
7740 | return MATCH_ERROR; | |
7741 | } | |
7742 | ||
7743 | if (gfc_match_eos () == MATCH_YES) | |
7744 | { | |
7745 | *st = ST_PRIVATE; | |
7746 | return MATCH_YES; | |
7747 | } | |
7748 | ||
7749 | *st = ST_ATTR_DECL; | |
7750 | return access_attr_decl (ST_PRIVATE); | |
7751 | } | |
7752 | ||
7753 | ||
7754 | match | |
636dff67 | 7755 | gfc_match_public (gfc_statement *st) |
6de9cd9a DN |
7756 | { |
7757 | ||
7758 | if (gfc_match ("public") != MATCH_YES) | |
7759 | return MATCH_NO; | |
7760 | ||
d51347f9 TB |
7761 | if (gfc_current_state () != COMP_MODULE) |
7762 | { | |
7763 | gfc_error ("PUBLIC statement at %C is only allowed in the " | |
7764 | "specification part of a module"); | |
7765 | return MATCH_ERROR; | |
7766 | } | |
7767 | ||
6de9cd9a DN |
7768 | if (gfc_match_eos () == MATCH_YES) |
7769 | { | |
7770 | *st = ST_PUBLIC; | |
7771 | return MATCH_YES; | |
7772 | } | |
7773 | ||
7774 | *st = ST_ATTR_DECL; | |
7775 | return access_attr_decl (ST_PUBLIC); | |
7776 | } | |
7777 | ||
7778 | ||
7779 | /* Workhorse for gfc_match_parameter. */ | |
7780 | ||
7781 | static match | |
7782 | do_parm (void) | |
7783 | { | |
7784 | gfc_symbol *sym; | |
7785 | gfc_expr *init; | |
7786 | match m; | |
524af0d6 | 7787 | bool t; |
6de9cd9a DN |
7788 | |
7789 | m = gfc_match_symbol (&sym, 0); | |
7790 | if (m == MATCH_NO) | |
7791 | gfc_error ("Expected variable name at %C in PARAMETER statement"); | |
7792 | ||
7793 | if (m != MATCH_YES) | |
7794 | return m; | |
7795 | ||
7796 | if (gfc_match_char ('=') == MATCH_NO) | |
7797 | { | |
7798 | gfc_error ("Expected = sign in PARAMETER statement at %C"); | |
7799 | return MATCH_ERROR; | |
7800 | } | |
7801 | ||
7802 | m = gfc_match_init_expr (&init); | |
7803 | if (m == MATCH_NO) | |
7804 | gfc_error ("Expected expression at %C in PARAMETER statement"); | |
7805 | if (m != MATCH_YES) | |
7806 | return m; | |
7807 | ||
7808 | if (sym->ts.type == BT_UNKNOWN | |
524af0d6 | 7809 | && !gfc_set_default_type (sym, 1, NULL)) |
6de9cd9a DN |
7810 | { |
7811 | m = MATCH_ERROR; | |
7812 | goto cleanup; | |
7813 | } | |
7814 | ||
524af0d6 JB |
7815 | if (!gfc_check_assign_symbol (sym, NULL, init) |
7816 | || !gfc_add_flavor (&sym->attr, FL_PARAMETER, sym->name, NULL)) | |
6de9cd9a DN |
7817 | { |
7818 | m = MATCH_ERROR; | |
7819 | goto cleanup; | |
7820 | } | |
7821 | ||
1283ab12 TB |
7822 | if (sym->value) |
7823 | { | |
7824 | gfc_error ("Initializing already initialized variable at %C"); | |
7825 | m = MATCH_ERROR; | |
7826 | goto cleanup; | |
7827 | } | |
7828 | ||
7919373d | 7829 | t = add_init_expr_to_sym (sym->name, &init, &gfc_current_locus); |
524af0d6 | 7830 | return (t) ? MATCH_YES : MATCH_ERROR; |
6de9cd9a DN |
7831 | |
7832 | cleanup: | |
7833 | gfc_free_expr (init); | |
7834 | return m; | |
7835 | } | |
7836 | ||
7837 | ||
7838 | /* Match a parameter statement, with the weird syntax that these have. */ | |
7839 | ||
7840 | match | |
7841 | gfc_match_parameter (void) | |
7842 | { | |
35ea947f | 7843 | const char *term = " )%t"; |
6de9cd9a DN |
7844 | match m; |
7845 | ||
7846 | if (gfc_match_char ('(') == MATCH_NO) | |
35ea947f FR |
7847 | { |
7848 | /* With legacy PARAMETER statements, don't expect a terminating ')'. */ | |
7849 | if (!gfc_notify_std (GFC_STD_LEGACY, "PARAMETER without '()' at %C")) | |
7850 | return MATCH_NO; | |
7851 | term = " %t"; | |
7852 | } | |
6de9cd9a DN |
7853 | |
7854 | for (;;) | |
7855 | { | |
7856 | m = do_parm (); | |
7857 | if (m != MATCH_YES) | |
7858 | break; | |
7859 | ||
35ea947f | 7860 | if (gfc_match (term) == MATCH_YES) |
6de9cd9a DN |
7861 | break; |
7862 | ||
7863 | if (gfc_match_char (',') != MATCH_YES) | |
7864 | { | |
7865 | gfc_error ("Unexpected characters in PARAMETER statement at %C"); | |
7866 | m = MATCH_ERROR; | |
7867 | break; | |
7868 | } | |
7869 | } | |
7870 | ||
7871 | return m; | |
7872 | } | |
7873 | ||
7874 | ||
34d567d1 FR |
7875 | match |
7876 | gfc_match_automatic (void) | |
7877 | { | |
7878 | gfc_symbol *sym; | |
7879 | match m; | |
7880 | bool seen_symbol = false; | |
7881 | ||
7882 | if (!flag_dec_static) | |
7883 | { | |
7884 | gfc_error ("AUTOMATIC at %C is a DEC extension, enable with " | |
7885 | "-fdec-static"); | |
7886 | return MATCH_ERROR; | |
7887 | } | |
7888 | ||
7889 | gfc_match (" ::"); | |
7890 | ||
7891 | for (;;) | |
7892 | { | |
7893 | m = gfc_match_symbol (&sym, 0); | |
7894 | switch (m) | |
7895 | { | |
7896 | case MATCH_NO: | |
7897 | break; | |
7898 | ||
7899 | case MATCH_ERROR: | |
7900 | return MATCH_ERROR; | |
7901 | ||
7902 | case MATCH_YES: | |
7903 | if (!gfc_add_automatic (&sym->attr, sym->name, &gfc_current_locus)) | |
7904 | return MATCH_ERROR; | |
7905 | seen_symbol = true; | |
7906 | break; | |
7907 | } | |
7908 | ||
7909 | if (gfc_match_eos () == MATCH_YES) | |
7910 | break; | |
7911 | if (gfc_match_char (',') != MATCH_YES) | |
7912 | goto syntax; | |
7913 | } | |
7914 | ||
7915 | if (!seen_symbol) | |
7916 | { | |
7917 | gfc_error ("Expected entity-list in AUTOMATIC statement at %C"); | |
7918 | return MATCH_ERROR; | |
7919 | } | |
7920 | ||
7921 | return MATCH_YES; | |
7922 | ||
7923 | syntax: | |
7924 | gfc_error ("Syntax error in AUTOMATIC statement at %C"); | |
7925 | return MATCH_ERROR; | |
7926 | } | |
7927 | ||
7928 | ||
7929 | match | |
7930 | gfc_match_static (void) | |
7931 | { | |
7932 | gfc_symbol *sym; | |
7933 | match m; | |
7934 | bool seen_symbol = false; | |
7935 | ||
7936 | if (!flag_dec_static) | |
7937 | { | |
7938 | gfc_error ("STATIC at %C is a DEC extension, enable with -fdec-static"); | |
7939 | return MATCH_ERROR; | |
7940 | } | |
7941 | ||
7942 | gfc_match (" ::"); | |
7943 | ||
7944 | for (;;) | |
7945 | { | |
7946 | m = gfc_match_symbol (&sym, 0); | |
7947 | switch (m) | |
7948 | { | |
7949 | case MATCH_NO: | |
7950 | break; | |
7951 | ||
7952 | case MATCH_ERROR: | |
7953 | return MATCH_ERROR; | |
7954 | ||
7955 | case MATCH_YES: | |
7956 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, | |
7957 | &gfc_current_locus)) | |
7958 | return MATCH_ERROR; | |
7959 | seen_symbol = true; | |
7960 | break; | |
7961 | } | |
7962 | ||
7963 | if (gfc_match_eos () == MATCH_YES) | |
7964 | break; | |
7965 | if (gfc_match_char (',') != MATCH_YES) | |
7966 | goto syntax; | |
7967 | } | |
7968 | ||
7969 | if (!seen_symbol) | |
7970 | { | |
7971 | gfc_error ("Expected entity-list in STATIC statement at %C"); | |
7972 | return MATCH_ERROR; | |
7973 | } | |
7974 | ||
7975 | return MATCH_YES; | |
7976 | ||
7977 | syntax: | |
7978 | gfc_error ("Syntax error in STATIC statement at %C"); | |
7979 | return MATCH_ERROR; | |
7980 | } | |
7981 | ||
7982 | ||
6de9cd9a DN |
7983 | /* Save statements have a special syntax. */ |
7984 | ||
7985 | match | |
7986 | gfc_match_save (void) | |
7987 | { | |
9056bd70 TS |
7988 | char n[GFC_MAX_SYMBOL_LEN+1]; |
7989 | gfc_common_head *c; | |
6de9cd9a DN |
7990 | gfc_symbol *sym; |
7991 | match m; | |
7992 | ||
7993 | if (gfc_match_eos () == MATCH_YES) | |
7994 | { | |
7995 | if (gfc_current_ns->seen_save) | |
7996 | { | |
524af0d6 JB |
7997 | if (!gfc_notify_std (GFC_STD_LEGACY, "Blanket SAVE statement at %C " |
7998 | "follows previous SAVE statement")) | |
09e87839 | 7999 | return MATCH_ERROR; |
6de9cd9a DN |
8000 | } |
8001 | ||
8002 | gfc_current_ns->save_all = gfc_current_ns->seen_save = 1; | |
8003 | return MATCH_YES; | |
8004 | } | |
8005 | ||
8006 | if (gfc_current_ns->save_all) | |
8007 | { | |
524af0d6 JB |
8008 | if (!gfc_notify_std (GFC_STD_LEGACY, "SAVE statement at %C follows " |
8009 | "blanket SAVE statement")) | |
09e87839 | 8010 | return MATCH_ERROR; |
6de9cd9a DN |
8011 | } |
8012 | ||
8013 | gfc_match (" ::"); | |
8014 | ||
8015 | for (;;) | |
8016 | { | |
8017 | m = gfc_match_symbol (&sym, 0); | |
8018 | switch (m) | |
8019 | { | |
8020 | case MATCH_YES: | |
70112e2a | 8021 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, |
524af0d6 | 8022 | &gfc_current_locus)) |
6de9cd9a DN |
8023 | return MATCH_ERROR; |
8024 | goto next_item; | |
8025 | ||
8026 | case MATCH_NO: | |
8027 | break; | |
8028 | ||
8029 | case MATCH_ERROR: | |
8030 | return MATCH_ERROR; | |
8031 | } | |
8032 | ||
9056bd70 | 8033 | m = gfc_match (" / %n /", &n); |
6de9cd9a DN |
8034 | if (m == MATCH_ERROR) |
8035 | return MATCH_ERROR; | |
8036 | if (m == MATCH_NO) | |
8037 | goto syntax; | |
8038 | ||
53814b8f | 8039 | c = gfc_get_common (n, 0); |
9056bd70 TS |
8040 | c->saved = 1; |
8041 | ||
6de9cd9a DN |
8042 | gfc_current_ns->seen_save = 1; |
8043 | ||
8044 | next_item: | |
8045 | if (gfc_match_eos () == MATCH_YES) | |
8046 | break; | |
8047 | if (gfc_match_char (',') != MATCH_YES) | |
8048 | goto syntax; | |
8049 | } | |
8050 | ||
8051 | return MATCH_YES; | |
8052 | ||
8053 | syntax: | |
8054 | gfc_error ("Syntax error in SAVE statement at %C"); | |
8055 | return MATCH_ERROR; | |
8056 | } | |
8057 | ||
8058 | ||
06469efd PT |
8059 | match |
8060 | gfc_match_value (void) | |
8061 | { | |
8062 | gfc_symbol *sym; | |
8063 | match m; | |
8064 | ||
9abe5e56 DK |
8065 | /* This is not allowed within a BLOCK construct! */ |
8066 | if (gfc_current_state () == COMP_BLOCK) | |
8067 | { | |
8068 | gfc_error ("VALUE is not allowed inside of BLOCK at %C"); | |
8069 | return MATCH_ERROR; | |
8070 | } | |
8071 | ||
524af0d6 | 8072 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE statement at %C")) |
06469efd PT |
8073 | return MATCH_ERROR; |
8074 | ||
8075 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8076 | { | |
8077 | return MATCH_ERROR; | |
8078 | } | |
8079 | ||
8080 | if (gfc_match_eos () == MATCH_YES) | |
8081 | goto syntax; | |
8082 | ||
8083 | for(;;) | |
8084 | { | |
8085 | m = gfc_match_symbol (&sym, 0); | |
8086 | switch (m) | |
8087 | { | |
8088 | case MATCH_YES: | |
524af0d6 | 8089 | if (!gfc_add_value (&sym->attr, sym->name, &gfc_current_locus)) |
06469efd PT |
8090 | return MATCH_ERROR; |
8091 | goto next_item; | |
8092 | ||
8093 | case MATCH_NO: | |
8094 | break; | |
8095 | ||
8096 | case MATCH_ERROR: | |
8097 | return MATCH_ERROR; | |
8098 | } | |
8099 | ||
8100 | next_item: | |
8101 | if (gfc_match_eos () == MATCH_YES) | |
8102 | break; | |
8103 | if (gfc_match_char (',') != MATCH_YES) | |
8104 | goto syntax; | |
8105 | } | |
8106 | ||
8107 | return MATCH_YES; | |
8108 | ||
8109 | syntax: | |
8110 | gfc_error ("Syntax error in VALUE statement at %C"); | |
8111 | return MATCH_ERROR; | |
8112 | } | |
8113 | ||
66e4ab31 | 8114 | |
775e6c3a TB |
8115 | match |
8116 | gfc_match_volatile (void) | |
8117 | { | |
8118 | gfc_symbol *sym; | |
8119 | match m; | |
8120 | ||
524af0d6 | 8121 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE statement at %C")) |
775e6c3a TB |
8122 | return MATCH_ERROR; |
8123 | ||
8124 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8125 | { | |
8126 | return MATCH_ERROR; | |
8127 | } | |
8128 | ||
8129 | if (gfc_match_eos () == MATCH_YES) | |
8130 | goto syntax; | |
8131 | ||
8132 | for(;;) | |
8133 | { | |
f5acf0f2 | 8134 | /* VOLATILE is special because it can be added to host-associated |
1cc0e193 | 8135 | symbols locally. Except for coarrays. */ |
9bce3c1c | 8136 | m = gfc_match_symbol (&sym, 1); |
775e6c3a TB |
8137 | switch (m) |
8138 | { | |
8139 | case MATCH_YES: | |
be59db2d TB |
8140 | /* F2008, C560+C561. VOLATILE for host-/use-associated variable or |
8141 | for variable in a BLOCK which is defined outside of the BLOCK. */ | |
8142 | if (sym->ns != gfc_current_ns && sym->attr.codimension) | |
8143 | { | |
c4100eae | 8144 | gfc_error ("Specifying VOLATILE for coarray variable %qs at " |
be59db2d TB |
8145 | "%C, which is use-/host-associated", sym->name); |
8146 | return MATCH_ERROR; | |
8147 | } | |
524af0d6 | 8148 | if (!gfc_add_volatile (&sym->attr, sym->name, &gfc_current_locus)) |
775e6c3a TB |
8149 | return MATCH_ERROR; |
8150 | goto next_item; | |
8151 | ||
8152 | case MATCH_NO: | |
8153 | break; | |
8154 | ||
8155 | case MATCH_ERROR: | |
8156 | return MATCH_ERROR; | |
8157 | } | |
8158 | ||
8159 | next_item: | |
8160 | if (gfc_match_eos () == MATCH_YES) | |
8161 | break; | |
8162 | if (gfc_match_char (',') != MATCH_YES) | |
8163 | goto syntax; | |
8164 | } | |
8165 | ||
8166 | return MATCH_YES; | |
8167 | ||
8168 | syntax: | |
8169 | gfc_error ("Syntax error in VOLATILE statement at %C"); | |
8170 | return MATCH_ERROR; | |
8171 | } | |
8172 | ||
8173 | ||
1eee5628 TB |
8174 | match |
8175 | gfc_match_asynchronous (void) | |
8176 | { | |
8177 | gfc_symbol *sym; | |
8178 | match m; | |
8179 | ||
524af0d6 | 8180 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS statement at %C")) |
1eee5628 TB |
8181 | return MATCH_ERROR; |
8182 | ||
8183 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8184 | { | |
8185 | return MATCH_ERROR; | |
8186 | } | |
8187 | ||
8188 | if (gfc_match_eos () == MATCH_YES) | |
8189 | goto syntax; | |
8190 | ||
8191 | for(;;) | |
8192 | { | |
f5acf0f2 | 8193 | /* ASYNCHRONOUS is special because it can be added to host-associated |
1eee5628 TB |
8194 | symbols locally. */ |
8195 | m = gfc_match_symbol (&sym, 1); | |
8196 | switch (m) | |
8197 | { | |
8198 | case MATCH_YES: | |
524af0d6 | 8199 | if (!gfc_add_asynchronous (&sym->attr, sym->name, &gfc_current_locus)) |
1eee5628 TB |
8200 | return MATCH_ERROR; |
8201 | goto next_item; | |
8202 | ||
8203 | case MATCH_NO: | |
8204 | break; | |
8205 | ||
8206 | case MATCH_ERROR: | |
8207 | return MATCH_ERROR; | |
8208 | } | |
8209 | ||
8210 | next_item: | |
8211 | if (gfc_match_eos () == MATCH_YES) | |
8212 | break; | |
8213 | if (gfc_match_char (',') != MATCH_YES) | |
8214 | goto syntax; | |
8215 | } | |
8216 | ||
8217 | return MATCH_YES; | |
8218 | ||
8219 | syntax: | |
8220 | gfc_error ("Syntax error in ASYNCHRONOUS statement at %C"); | |
8221 | return MATCH_ERROR; | |
8222 | } | |
8223 | ||
8224 | ||
4668d6f9 PT |
8225 | /* Match a module procedure statement in a submodule. */ |
8226 | ||
8227 | match | |
8228 | gfc_match_submod_proc (void) | |
8229 | { | |
8230 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8231 | gfc_symbol *sym, *fsym; | |
8232 | match m; | |
8233 | gfc_formal_arglist *formal, *head, *tail; | |
8234 | ||
8235 | if (gfc_current_state () != COMP_CONTAINS | |
8236 | || !(gfc_state_stack->previous | |
70112e2a PT |
8237 | && (gfc_state_stack->previous->state == COMP_SUBMODULE |
8238 | || gfc_state_stack->previous->state == COMP_MODULE))) | |
4668d6f9 PT |
8239 | return MATCH_NO; |
8240 | ||
8241 | m = gfc_match (" module% procedure% %n", name); | |
8242 | if (m != MATCH_YES) | |
8243 | return m; | |
8244 | ||
8245 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE PROCEDURE declaration " | |
8246 | "at %C")) | |
8247 | return MATCH_ERROR; | |
8248 | ||
8249 | if (get_proc_name (name, &sym, false)) | |
8250 | return MATCH_ERROR; | |
8251 | ||
8252 | /* Make sure that the result field is appropriately filled, even though | |
8253 | the result symbol will be replaced later on. */ | |
c064374d | 8254 | if (sym->tlink && sym->tlink->attr.function) |
4668d6f9 | 8255 | { |
c064374d PT |
8256 | if (sym->tlink->result |
8257 | && sym->tlink->result != sym->tlink) | |
8258 | sym->result= sym->tlink->result; | |
4668d6f9 PT |
8259 | else |
8260 | sym->result = sym; | |
8261 | } | |
8262 | ||
8263 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if | |
8264 | the symbol existed before. */ | |
8265 | sym->declared_at = gfc_current_locus; | |
8266 | ||
8267 | if (!sym->attr.module_procedure) | |
8268 | return MATCH_ERROR; | |
8269 | ||
8270 | /* Signal match_end to expect "end procedure". */ | |
8271 | sym->abr_modproc_decl = 1; | |
8272 | ||
8273 | /* Change from IFSRC_IFBODY coming from the interface declaration. */ | |
8274 | sym->attr.if_source = IFSRC_DECL; | |
8275 | ||
8276 | gfc_new_block = sym; | |
8277 | ||
8278 | /* Make a new formal arglist with the symbols in the procedure | |
8279 | namespace. */ | |
8280 | head = tail = NULL; | |
8281 | for (formal = sym->formal; formal && formal->sym; formal = formal->next) | |
8282 | { | |
8283 | if (formal == sym->formal) | |
8284 | head = tail = gfc_get_formal_arglist (); | |
8285 | else | |
8286 | { | |
8287 | tail->next = gfc_get_formal_arglist (); | |
8288 | tail = tail->next; | |
8289 | } | |
8290 | ||
8291 | if (gfc_copy_dummy_sym (&fsym, formal->sym, 0)) | |
8292 | goto cleanup; | |
8293 | ||
8294 | tail->sym = fsym; | |
8295 | gfc_set_sym_referenced (fsym); | |
8296 | } | |
8297 | ||
8298 | /* The dummy symbols get cleaned up, when the formal_namespace of the | |
8299 | interface declaration is cleared. This allows us to add the | |
8300 | explicit interface as is done for other type of procedure. */ | |
8301 | if (!gfc_add_explicit_interface (sym, IFSRC_DECL, head, | |
8302 | &gfc_current_locus)) | |
8303 | return MATCH_ERROR; | |
8304 | ||
8305 | if (gfc_match_eos () != MATCH_YES) | |
8306 | { | |
8307 | gfc_syntax_error (ST_MODULE_PROC); | |
8308 | return MATCH_ERROR; | |
8309 | } | |
8310 | ||
8311 | return MATCH_YES; | |
8312 | ||
8313 | cleanup: | |
8314 | gfc_free_formal_arglist (head); | |
8315 | return MATCH_ERROR; | |
8316 | } | |
8317 | ||
8318 | ||
6de9cd9a DN |
8319 | /* Match a module procedure statement. Note that we have to modify |
8320 | symbols in the parent's namespace because the current one was there | |
49de9e73 | 8321 | to receive symbols that are in an interface's formal argument list. */ |
6de9cd9a DN |
8322 | |
8323 | match | |
8324 | gfc_match_modproc (void) | |
8325 | { | |
8326 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8327 | gfc_symbol *sym; | |
8328 | match m; | |
162b5a21 | 8329 | locus old_locus; |
060fca4a | 8330 | gfc_namespace *module_ns; |
2b77e908 | 8331 | gfc_interface *old_interface_head, *interface; |
6de9cd9a DN |
8332 | |
8333 | if (gfc_state_stack->state != COMP_INTERFACE | |
8334 | || gfc_state_stack->previous == NULL | |
129d15a3 JW |
8335 | || current_interface.type == INTERFACE_NAMELESS |
8336 | || current_interface.type == INTERFACE_ABSTRACT) | |
6de9cd9a | 8337 | { |
636dff67 SK |
8338 | gfc_error ("MODULE PROCEDURE at %C must be in a generic module " |
8339 | "interface"); | |
6de9cd9a DN |
8340 | return MATCH_ERROR; |
8341 | } | |
8342 | ||
060fca4a PT |
8343 | module_ns = gfc_current_ns->parent; |
8344 | for (; module_ns; module_ns = module_ns->parent) | |
43dfd40c SK |
8345 | if (module_ns->proc_name->attr.flavor == FL_MODULE |
8346 | || module_ns->proc_name->attr.flavor == FL_PROGRAM | |
8347 | || (module_ns->proc_name->attr.flavor == FL_PROCEDURE | |
8348 | && !module_ns->proc_name->attr.contained)) | |
060fca4a PT |
8349 | break; |
8350 | ||
8351 | if (module_ns == NULL) | |
8352 | return MATCH_ERROR; | |
8353 | ||
2b77e908 FXC |
8354 | /* Store the current state of the interface. We will need it if we |
8355 | end up with a syntax error and need to recover. */ | |
8356 | old_interface_head = gfc_current_interface_head (); | |
8357 | ||
162b5a21 SK |
8358 | /* Check if the F2008 optional double colon appears. */ |
8359 | gfc_gobble_whitespace (); | |
8360 | old_locus = gfc_current_locus; | |
8361 | if (gfc_match ("::") == MATCH_YES) | |
8362 | { | |
524af0d6 JB |
8363 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
8364 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
162b5a21 SK |
8365 | return MATCH_ERROR; |
8366 | } | |
8367 | else | |
8368 | gfc_current_locus = old_locus; | |
f5acf0f2 | 8369 | |
6de9cd9a DN |
8370 | for (;;) |
8371 | { | |
2b77e908 | 8372 | bool last = false; |
162b5a21 | 8373 | old_locus = gfc_current_locus; |
2b77e908 | 8374 | |
6de9cd9a DN |
8375 | m = gfc_match_name (name); |
8376 | if (m == MATCH_NO) | |
8377 | goto syntax; | |
8378 | if (m != MATCH_YES) | |
8379 | return MATCH_ERROR; | |
8380 | ||
2b77e908 FXC |
8381 | /* Check for syntax error before starting to add symbols to the |
8382 | current namespace. */ | |
8383 | if (gfc_match_eos () == MATCH_YES) | |
8384 | last = true; | |
162b5a21 | 8385 | |
2b77e908 FXC |
8386 | if (!last && gfc_match_char (',') != MATCH_YES) |
8387 | goto syntax; | |
8388 | ||
8389 | /* Now we're sure the syntax is valid, we process this item | |
8390 | further. */ | |
060fca4a | 8391 | if (gfc_get_symbol (name, module_ns, &sym)) |
6de9cd9a DN |
8392 | return MATCH_ERROR; |
8393 | ||
43dfd40c SK |
8394 | if (sym->attr.intrinsic) |
8395 | { | |
8396 | gfc_error ("Intrinsic procedure at %L cannot be a MODULE " | |
8397 | "PROCEDURE", &old_locus); | |
8398 | return MATCH_ERROR; | |
8399 | } | |
8400 | ||
6de9cd9a | 8401 | if (sym->attr.proc != PROC_MODULE |
524af0d6 | 8402 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
6de9cd9a DN |
8403 | return MATCH_ERROR; |
8404 | ||
524af0d6 | 8405 | if (!gfc_add_interface (sym)) |
6de9cd9a DN |
8406 | return MATCH_ERROR; |
8407 | ||
71f77fd7 | 8408 | sym->attr.mod_proc = 1; |
43dfd40c | 8409 | sym->declared_at = old_locus; |
71f77fd7 | 8410 | |
2b77e908 | 8411 | if (last) |
6de9cd9a | 8412 | break; |
6de9cd9a DN |
8413 | } |
8414 | ||
8415 | return MATCH_YES; | |
8416 | ||
8417 | syntax: | |
2b77e908 FXC |
8418 | /* Restore the previous state of the interface. */ |
8419 | interface = gfc_current_interface_head (); | |
8420 | gfc_set_current_interface_head (old_interface_head); | |
8421 | ||
8422 | /* Free the new interfaces. */ | |
8423 | while (interface != old_interface_head) | |
8424 | { | |
8425 | gfc_interface *i = interface->next; | |
cede9502 | 8426 | free (interface); |
2b77e908 FXC |
8427 | interface = i; |
8428 | } | |
8429 | ||
8430 | /* And issue a syntax error. */ | |
6de9cd9a DN |
8431 | gfc_syntax_error (ST_MODULE_PROC); |
8432 | return MATCH_ERROR; | |
8433 | } | |
8434 | ||
8435 | ||
7d1f1e61 | 8436 | /* Check a derived type that is being extended. */ |
42e3d759 | 8437 | |
7d1f1e61 PT |
8438 | static gfc_symbol* |
8439 | check_extended_derived_type (char *name) | |
8440 | { | |
8441 | gfc_symbol *extended; | |
8442 | ||
8443 | if (gfc_find_symbol (name, gfc_current_ns, 1, &extended)) | |
8444 | { | |
8445 | gfc_error ("Ambiguous symbol in TYPE definition at %C"); | |
8446 | return NULL; | |
8447 | } | |
8448 | ||
42e3d759 JW |
8449 | extended = gfc_find_dt_in_generic (extended); |
8450 | ||
8451 | /* F08:C428. */ | |
7d1f1e61 PT |
8452 | if (!extended) |
8453 | { | |
c4100eae | 8454 | gfc_error ("Symbol %qs at %C has not been previously defined", name); |
7d1f1e61 PT |
8455 | return NULL; |
8456 | } | |
8457 | ||
8458 | if (extended->attr.flavor != FL_DERIVED) | |
8459 | { | |
c4100eae | 8460 | gfc_error ("%qs in EXTENDS expression at %C is not a " |
7d1f1e61 PT |
8461 | "derived type", name); |
8462 | return NULL; | |
8463 | } | |
8464 | ||
8465 | if (extended->attr.is_bind_c) | |
8466 | { | |
c4100eae | 8467 | gfc_error ("%qs cannot be extended at %C because it " |
7d1f1e61 PT |
8468 | "is BIND(C)", extended->name); |
8469 | return NULL; | |
8470 | } | |
8471 | ||
8472 | if (extended->attr.sequence) | |
8473 | { | |
c4100eae | 8474 | gfc_error ("%qs cannot be extended at %C because it " |
7d1f1e61 PT |
8475 | "is a SEQUENCE type", extended->name); |
8476 | return NULL; | |
8477 | } | |
8478 | ||
8479 | return extended; | |
8480 | } | |
8481 | ||
8482 | ||
a8b3b0b6 CR |
8483 | /* Match the optional attribute specifiers for a type declaration. |
8484 | Return MATCH_ERROR if an error is encountered in one of the handled | |
8485 | attributes (public, private, bind(c)), MATCH_NO if what's found is | |
8486 | not a handled attribute, and MATCH_YES otherwise. TODO: More error | |
8487 | checking on attribute conflicts needs to be done. */ | |
6de9cd9a DN |
8488 | |
8489 | match | |
7d1f1e61 | 8490 | gfc_get_type_attr_spec (symbol_attribute *attr, char *name) |
6de9cd9a | 8491 | { |
a8b3b0b6 | 8492 | /* See if the derived type is marked as private. */ |
6de9cd9a DN |
8493 | if (gfc_match (" , private") == MATCH_YES) |
8494 | { | |
d51347f9 | 8495 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 8496 | { |
d51347f9 TB |
8497 | gfc_error ("Derived type at %C can only be PRIVATE in the " |
8498 | "specification part of a module"); | |
6de9cd9a DN |
8499 | return MATCH_ERROR; |
8500 | } | |
8501 | ||
524af0d6 | 8502 | if (!gfc_add_access (attr, ACCESS_PRIVATE, NULL, NULL)) |
6de9cd9a | 8503 | return MATCH_ERROR; |
6de9cd9a | 8504 | } |
a8b3b0b6 | 8505 | else if (gfc_match (" , public") == MATCH_YES) |
6de9cd9a | 8506 | { |
d51347f9 | 8507 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 8508 | { |
d51347f9 TB |
8509 | gfc_error ("Derived type at %C can only be PUBLIC in the " |
8510 | "specification part of a module"); | |
6de9cd9a DN |
8511 | return MATCH_ERROR; |
8512 | } | |
8513 | ||
524af0d6 | 8514 | if (!gfc_add_access (attr, ACCESS_PUBLIC, NULL, NULL)) |
6de9cd9a | 8515 | return MATCH_ERROR; |
6de9cd9a | 8516 | } |
52f49934 | 8517 | else if (gfc_match (" , bind ( c )") == MATCH_YES) |
a8b3b0b6 CR |
8518 | { |
8519 | /* If the type is defined to be bind(c) it then needs to make | |
8520 | sure that all fields are interoperable. This will | |
8521 | need to be a semantic check on the finished derived type. | |
8522 | See 15.2.3 (lines 9-12) of F2003 draft. */ | |
524af0d6 | 8523 | if (!gfc_add_is_bind_c (attr, NULL, &gfc_current_locus, 0)) |
a8b3b0b6 CR |
8524 | return MATCH_ERROR; |
8525 | ||
8526 | /* TODO: attr conflicts need to be checked, probably in symbol.c. */ | |
8527 | } | |
52f49934 DK |
8528 | else if (gfc_match (" , abstract") == MATCH_YES) |
8529 | { | |
524af0d6 | 8530 | if (!gfc_notify_std (GFC_STD_F2003, "ABSTRACT type at %C")) |
52f49934 DK |
8531 | return MATCH_ERROR; |
8532 | ||
524af0d6 | 8533 | if (!gfc_add_abstract (attr, &gfc_current_locus)) |
52f49934 DK |
8534 | return MATCH_ERROR; |
8535 | } | |
524af0d6 | 8536 | else if (name && gfc_match (" , extends ( %n )", name) == MATCH_YES) |
7d1f1e61 | 8537 | { |
524af0d6 | 8538 | if (!gfc_add_extension (attr, &gfc_current_locus)) |
7d1f1e61 PT |
8539 | return MATCH_ERROR; |
8540 | } | |
a8b3b0b6 CR |
8541 | else |
8542 | return MATCH_NO; | |
8543 | ||
8544 | /* If we get here, something matched. */ | |
8545 | return MATCH_YES; | |
8546 | } | |
8547 | ||
8548 | ||
f6288c24 FR |
8549 | /* Common function for type declaration blocks similar to derived types, such |
8550 | as STRUCTURES and MAPs. Unlike derived types, a structure type | |
8551 | does NOT have a generic symbol matching the name given by the user. | |
8552 | STRUCTUREs can share names with variables and PARAMETERs so we must allow | |
8553 | for the creation of an independent symbol. | |
6442a6f4 | 8554 | Other parameters are a message to prefix errors with, the name of the new |
f6288c24 FR |
8555 | type to be created, and the flavor to add to the resulting symbol. */ |
8556 | ||
8557 | static bool | |
8558 | get_struct_decl (const char *name, sym_flavor fl, locus *decl, | |
8559 | gfc_symbol **result) | |
8560 | { | |
8561 | gfc_symbol *sym; | |
8562 | locus where; | |
8563 | ||
8564 | gcc_assert (name[0] == (char) TOUPPER (name[0])); | |
8565 | ||
8566 | if (decl) | |
8567 | where = *decl; | |
8568 | else | |
8569 | where = gfc_current_locus; | |
8570 | ||
8571 | if (gfc_get_symbol (name, NULL, &sym)) | |
8572 | return false; | |
8573 | ||
8574 | if (!sym) | |
8575 | { | |
8576 | gfc_internal_error ("Failed to create structure type '%s' at %C", name); | |
8577 | return false; | |
8578 | } | |
8579 | ||
8580 | if (sym->components != NULL || sym->attr.zero_comp) | |
8581 | { | |
6442a6f4 | 8582 | gfc_error ("Type definition of '%s' at %C was already defined at %L", |
f6288c24 FR |
8583 | sym->name, &sym->declared_at); |
8584 | return false; | |
8585 | } | |
8586 | ||
8587 | sym->declared_at = where; | |
8588 | ||
8589 | if (sym->attr.flavor != fl | |
8590 | && !gfc_add_flavor (&sym->attr, fl, sym->name, NULL)) | |
8591 | return false; | |
8592 | ||
8593 | if (!sym->hash_value) | |
8594 | /* Set the hash for the compound name for this type. */ | |
8595 | sym->hash_value = gfc_hash_value (sym); | |
8596 | ||
8597 | /* Normally the type is expected to have been completely parsed by the time | |
8598 | a field declaration with this type is seen. For unions, maps, and nested | |
8599 | structure declarations, we need to indicate that it is okay that we | |
8600 | haven't seen any components yet. This will be updated after the structure | |
8601 | is fully parsed. */ | |
8602 | sym->attr.zero_comp = 0; | |
8603 | ||
8604 | /* Structures always act like derived-types with the SEQUENCE attribute */ | |
8605 | gfc_add_sequence (&sym->attr, sym->name, NULL); | |
8606 | ||
8607 | if (result) *result = sym; | |
8608 | ||
8609 | return true; | |
8610 | } | |
8611 | ||
8612 | ||
8613 | /* Match the opening of a MAP block. Like a struct within a union in C; | |
8614 | behaves identical to STRUCTURE blocks. */ | |
8615 | ||
8616 | match | |
8617 | gfc_match_map (void) | |
8618 | { | |
05b8fcb4 FR |
8619 | /* Counter used to give unique internal names to map structures. */ |
8620 | static unsigned int gfc_map_id = 0; | |
8621 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8622 | gfc_symbol *sym; | |
8623 | locus old_loc; | |
f6288c24 | 8624 | |
05b8fcb4 | 8625 | old_loc = gfc_current_locus; |
f6288c24 | 8626 | |
05b8fcb4 FR |
8627 | if (gfc_match_eos () != MATCH_YES) |
8628 | { | |
8629 | gfc_error ("Junk after MAP statement at %C"); | |
8630 | gfc_current_locus = old_loc; | |
8631 | return MATCH_ERROR; | |
8632 | } | |
f6288c24 | 8633 | |
05b8fcb4 FR |
8634 | /* Map blocks are anonymous so we make up unique names for the symbol table |
8635 | which are invalid Fortran identifiers. */ | |
8636 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "MM$%u", gfc_map_id++); | |
f6288c24 | 8637 | |
05b8fcb4 FR |
8638 | if (!get_struct_decl (name, FL_STRUCT, &old_loc, &sym)) |
8639 | return MATCH_ERROR; | |
f6288c24 | 8640 | |
05b8fcb4 | 8641 | gfc_new_block = sym; |
f6288c24 | 8642 | |
05b8fcb4 | 8643 | return MATCH_YES; |
f6288c24 FR |
8644 | } |
8645 | ||
8646 | ||
8647 | /* Match the opening of a UNION block. */ | |
8648 | ||
8649 | match | |
8650 | gfc_match_union (void) | |
8651 | { | |
05b8fcb4 FR |
8652 | /* Counter used to give unique internal names to union types. */ |
8653 | static unsigned int gfc_union_id = 0; | |
8654 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8655 | gfc_symbol *sym; | |
8656 | locus old_loc; | |
f6288c24 | 8657 | |
05b8fcb4 | 8658 | old_loc = gfc_current_locus; |
f6288c24 | 8659 | |
05b8fcb4 FR |
8660 | if (gfc_match_eos () != MATCH_YES) |
8661 | { | |
8662 | gfc_error ("Junk after UNION statement at %C"); | |
8663 | gfc_current_locus = old_loc; | |
8664 | return MATCH_ERROR; | |
8665 | } | |
f6288c24 | 8666 | |
05b8fcb4 FR |
8667 | /* Unions are anonymous so we make up unique names for the symbol table |
8668 | which are invalid Fortran identifiers. */ | |
8669 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "UU$%u", gfc_union_id++); | |
f6288c24 | 8670 | |
05b8fcb4 FR |
8671 | if (!get_struct_decl (name, FL_UNION, &old_loc, &sym)) |
8672 | return MATCH_ERROR; | |
f6288c24 | 8673 | |
05b8fcb4 | 8674 | gfc_new_block = sym; |
f6288c24 | 8675 | |
05b8fcb4 | 8676 | return MATCH_YES; |
f6288c24 FR |
8677 | } |
8678 | ||
8679 | ||
8680 | /* Match the beginning of a STRUCTURE declaration. This is similar to | |
8681 | matching the beginning of a derived type declaration with a few | |
8682 | twists. The resulting type symbol has no access control or other | |
8683 | interesting attributes. */ | |
8684 | ||
8685 | match | |
8686 | gfc_match_structure_decl (void) | |
8687 | { | |
05b8fcb4 FR |
8688 | /* Counter used to give unique internal names to anonymous structures. */ |
8689 | static unsigned int gfc_structure_id = 0; | |
8690 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8691 | gfc_symbol *sym; | |
8692 | match m; | |
8693 | locus where; | |
f6288c24 | 8694 | |
05b8fcb4 FR |
8695 | if (!flag_dec_structure) |
8696 | { | |
8697 | gfc_error ("STRUCTURE at %C is a DEC extension, enable with " | |
8698 | "-fdec-structure"); | |
8699 | return MATCH_ERROR; | |
8700 | } | |
f6288c24 | 8701 | |
05b8fcb4 | 8702 | name[0] = '\0'; |
f6288c24 | 8703 | |
05b8fcb4 FR |
8704 | m = gfc_match (" /%n/", name); |
8705 | if (m != MATCH_YES) | |
8706 | { | |
8707 | /* Non-nested structure declarations require a structure name. */ | |
8708 | if (!gfc_comp_struct (gfc_current_state ())) | |
8709 | { | |
8710 | gfc_error ("Structure name expected in non-nested structure " | |
8711 | "declaration at %C"); | |
8712 | return MATCH_ERROR; | |
8713 | } | |
8714 | /* This is an anonymous structure; make up a unique name for it | |
8715 | (upper-case letters never make it to symbol names from the source). | |
8716 | The important thing is initializing the type variable | |
8717 | and setting gfc_new_symbol, which is immediately used by | |
8718 | parse_structure () and variable_decl () to add components of | |
8719 | this type. */ | |
8720 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "SS$%u", gfc_structure_id++); | |
8721 | } | |
f6288c24 | 8722 | |
05b8fcb4 FR |
8723 | where = gfc_current_locus; |
8724 | /* No field list allowed after non-nested structure declaration. */ | |
8725 | if (!gfc_comp_struct (gfc_current_state ()) | |
8726 | && gfc_match_eos () != MATCH_YES) | |
8727 | { | |
8728 | gfc_error ("Junk after non-nested STRUCTURE statement at %C"); | |
8729 | return MATCH_ERROR; | |
8730 | } | |
f6288c24 | 8731 | |
05b8fcb4 FR |
8732 | /* Make sure the name is not the name of an intrinsic type. */ |
8733 | if (gfc_is_intrinsic_typename (name)) | |
8734 | { | |
8735 | gfc_error ("Structure name '%s' at %C cannot be the same as an" | |
8736 | " intrinsic type", name); | |
8737 | return MATCH_ERROR; | |
8738 | } | |
f6288c24 | 8739 | |
05b8fcb4 FR |
8740 | /* Store the actual type symbol for the structure with an upper-case first |
8741 | letter (an invalid Fortran identifier). */ | |
f6288c24 | 8742 | |
51f03c6b | 8743 | if (!get_struct_decl (gfc_dt_upper_string (name), FL_STRUCT, &where, &sym)) |
05b8fcb4 | 8744 | return MATCH_ERROR; |
f6288c24 | 8745 | |
05b8fcb4 FR |
8746 | gfc_new_block = sym; |
8747 | return MATCH_YES; | |
f6288c24 FR |
8748 | } |
8749 | ||
90051c26 FR |
8750 | |
8751 | /* This function does some work to determine which matcher should be used to | |
8752 | * match a statement beginning with "TYPE". This is used to disambiguate TYPE | |
8753 | * as an alias for PRINT from derived type declarations, TYPE IS statements, | |
8754 | * and derived type data declarations. */ | |
8755 | ||
8756 | match | |
8757 | gfc_match_type (gfc_statement *st) | |
8758 | { | |
8759 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8760 | match m; | |
8761 | locus old_loc; | |
8762 | ||
8763 | /* Requires -fdec. */ | |
8764 | if (!flag_dec) | |
8765 | return MATCH_NO; | |
8766 | ||
8767 | m = gfc_match ("type"); | |
8768 | if (m != MATCH_YES) | |
8769 | return m; | |
8770 | /* If we already have an error in the buffer, it is probably from failing to | |
8771 | * match a derived type data declaration. Let it happen. */ | |
8772 | else if (gfc_error_flag_test ()) | |
8773 | return MATCH_NO; | |
8774 | ||
8775 | old_loc = gfc_current_locus; | |
8776 | *st = ST_NONE; | |
8777 | ||
8778 | /* If we see an attribute list before anything else it's definitely a derived | |
8779 | * type declaration. */ | |
8780 | if (gfc_match (" ,") == MATCH_YES || gfc_match (" ::") == MATCH_YES) | |
8781 | { | |
8782 | gfc_current_locus = old_loc; | |
8783 | *st = ST_DERIVED_DECL; | |
8784 | return gfc_match_derived_decl (); | |
8785 | } | |
8786 | ||
8787 | /* By now "TYPE" has already been matched. If we do not see a name, this may | |
8788 | * be something like "TYPE *" or "TYPE <fmt>". */ | |
8789 | m = gfc_match_name (name); | |
8790 | if (m != MATCH_YES) | |
8791 | { | |
8792 | /* Let print match if it can, otherwise throw an error from | |
8793 | * gfc_match_derived_decl. */ | |
8794 | gfc_current_locus = old_loc; | |
8795 | if (gfc_match_print () == MATCH_YES) | |
8796 | { | |
8797 | *st = ST_WRITE; | |
8798 | return MATCH_YES; | |
8799 | } | |
8800 | gfc_current_locus = old_loc; | |
8801 | *st = ST_DERIVED_DECL; | |
8802 | return gfc_match_derived_decl (); | |
8803 | } | |
8804 | ||
8805 | /* A derived type declaration requires an EOS. Without it, assume print. */ | |
8806 | m = gfc_match_eos (); | |
8807 | if (m == MATCH_NO) | |
8808 | { | |
8809 | /* Check manually for TYPE IS (... - this is invalid print syntax. */ | |
8810 | if (strncmp ("is", name, 3) == 0 | |
8811 | && gfc_match (" (", name) == MATCH_YES) | |
8812 | { | |
8813 | gfc_current_locus = old_loc; | |
8814 | gcc_assert (gfc_match (" is") == MATCH_YES); | |
8815 | *st = ST_TYPE_IS; | |
8816 | return gfc_match_type_is (); | |
8817 | } | |
8818 | gfc_current_locus = old_loc; | |
8819 | *st = ST_WRITE; | |
8820 | return gfc_match_print (); | |
8821 | } | |
8822 | else | |
8823 | { | |
8824 | /* By now we have "TYPE <name> <EOS>". Check first if the name is an | |
8825 | * intrinsic typename - if so let gfc_match_derived_decl dump an error. | |
8826 | * Otherwise if gfc_match_derived_decl fails it's probably an existing | |
8827 | * symbol which can be printed. */ | |
8828 | gfc_current_locus = old_loc; | |
8829 | m = gfc_match_derived_decl (); | |
8830 | if (gfc_is_intrinsic_typename (name) || m == MATCH_YES) | |
8831 | { | |
8832 | *st = ST_DERIVED_DECL; | |
8833 | return m; | |
8834 | } | |
8835 | gfc_current_locus = old_loc; | |
8836 | *st = ST_WRITE; | |
8837 | return gfc_match_print (); | |
8838 | } | |
8839 | ||
8840 | return MATCH_NO; | |
8841 | } | |
8842 | ||
8843 | ||
a8b3b0b6 CR |
8844 | /* Match the beginning of a derived type declaration. If a type name |
8845 | was the result of a function, then it is possible to have a symbol | |
8846 | already to be known as a derived type yet have no components. */ | |
8847 | ||
8848 | match | |
8849 | gfc_match_derived_decl (void) | |
8850 | { | |
8851 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7d1f1e61 | 8852 | char parent[GFC_MAX_SYMBOL_LEN + 1]; |
a8b3b0b6 | 8853 | symbol_attribute attr; |
c3f34952 | 8854 | gfc_symbol *sym, *gensym; |
7d1f1e61 | 8855 | gfc_symbol *extended; |
a8b3b0b6 CR |
8856 | match m; |
8857 | match is_type_attr_spec = MATCH_NO; | |
e7303e85 | 8858 | bool seen_attr = false; |
c3f34952 | 8859 | gfc_interface *intr = NULL, *head; |
a8b3b0b6 | 8860 | |
f6288c24 | 8861 | if (gfc_comp_struct (gfc_current_state ())) |
a8b3b0b6 CR |
8862 | return MATCH_NO; |
8863 | ||
7d1f1e61 PT |
8864 | name[0] = '\0'; |
8865 | parent[0] = '\0'; | |
a8b3b0b6 | 8866 | gfc_clear_attr (&attr); |
7d1f1e61 | 8867 | extended = NULL; |
a8b3b0b6 CR |
8868 | |
8869 | do | |
8870 | { | |
7d1f1e61 | 8871 | is_type_attr_spec = gfc_get_type_attr_spec (&attr, parent); |
a8b3b0b6 CR |
8872 | if (is_type_attr_spec == MATCH_ERROR) |
8873 | return MATCH_ERROR; | |
e7303e85 FXC |
8874 | if (is_type_attr_spec == MATCH_YES) |
8875 | seen_attr = true; | |
a8b3b0b6 | 8876 | } while (is_type_attr_spec == MATCH_YES); |
6de9cd9a | 8877 | |
63a3341a PT |
8878 | /* Deal with derived type extensions. The extension attribute has |
8879 | been added to 'attr' but now the parent type must be found and | |
8880 | checked. */ | |
7d1f1e61 PT |
8881 | if (parent[0]) |
8882 | extended = check_extended_derived_type (parent); | |
8883 | ||
8884 | if (parent[0] && !extended) | |
8885 | return MATCH_ERROR; | |
8886 | ||
e7303e85 | 8887 | if (gfc_match (" ::") != MATCH_YES && seen_attr) |
6de9cd9a DN |
8888 | { |
8889 | gfc_error ("Expected :: in TYPE definition at %C"); | |
8890 | return MATCH_ERROR; | |
8891 | } | |
8892 | ||
8893 | m = gfc_match (" %n%t", name); | |
8894 | if (m != MATCH_YES) | |
8895 | return m; | |
8896 | ||
e9c06563 TB |
8897 | /* Make sure the name is not the name of an intrinsic type. */ |
8898 | if (gfc_is_intrinsic_typename (name)) | |
6de9cd9a | 8899 | { |
c4100eae | 8900 | gfc_error ("Type name %qs at %C cannot be the same as an intrinsic " |
636dff67 | 8901 | "type", name); |
6de9cd9a DN |
8902 | return MATCH_ERROR; |
8903 | } | |
8904 | ||
c3f34952 | 8905 | if (gfc_get_symbol (name, NULL, &gensym)) |
6de9cd9a DN |
8906 | return MATCH_ERROR; |
8907 | ||
c3f34952 | 8908 | if (!gensym->attr.generic && gensym->ts.type != BT_UNKNOWN) |
6de9cd9a | 8909 | { |
c4100eae | 8910 | gfc_error ("Derived type name %qs at %C already has a basic type " |
c3f34952 TB |
8911 | "of %s", gensym->name, gfc_typename (&gensym->ts)); |
8912 | return MATCH_ERROR; | |
8913 | } | |
8914 | ||
8915 | if (!gensym->attr.generic | |
524af0d6 | 8916 | && !gfc_add_generic (&gensym->attr, gensym->name, NULL)) |
c3f34952 TB |
8917 | return MATCH_ERROR; |
8918 | ||
8919 | if (!gensym->attr.function | |
524af0d6 | 8920 | && !gfc_add_function (&gensym->attr, gensym->name, NULL)) |
c3f34952 TB |
8921 | return MATCH_ERROR; |
8922 | ||
8923 | sym = gfc_find_dt_in_generic (gensym); | |
8924 | ||
8925 | if (sym && (sym->components != NULL || sym->attr.zero_comp)) | |
8926 | { | |
c4100eae | 8927 | gfc_error ("Derived type definition of %qs at %C has already been " |
c3f34952 | 8928 | "defined", sym->name); |
6de9cd9a DN |
8929 | return MATCH_ERROR; |
8930 | } | |
8931 | ||
c3f34952 TB |
8932 | if (!sym) |
8933 | { | |
8934 | /* Use upper case to save the actual derived-type symbol. */ | |
f6288c24 | 8935 | gfc_get_symbol (gfc_dt_upper_string (gensym->name), NULL, &sym); |
51f03c6b | 8936 | sym->name = gfc_get_string ("%s", gensym->name); |
c3f34952 TB |
8937 | head = gensym->generic; |
8938 | intr = gfc_get_interface (); | |
8939 | intr->sym = sym; | |
8940 | intr->where = gfc_current_locus; | |
8941 | intr->sym->declared_at = gfc_current_locus; | |
8942 | intr->next = head; | |
8943 | gensym->generic = intr; | |
8944 | gensym->attr.if_source = IFSRC_DECL; | |
8945 | } | |
8946 | ||
6de9cd9a DN |
8947 | /* The symbol may already have the derived attribute without the |
8948 | components. The ways this can happen is via a function | |
8949 | definition, an INTRINSIC statement or a subtype in another | |
8950 | derived type that is a pointer. The first part of the AND clause | |
df2fba9e | 8951 | is true if the symbol is not the return value of a function. */ |
6de9cd9a | 8952 | if (sym->attr.flavor != FL_DERIVED |
524af0d6 | 8953 | && !gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL)) |
6de9cd9a DN |
8954 | return MATCH_ERROR; |
8955 | ||
6de9cd9a | 8956 | if (attr.access != ACCESS_UNKNOWN |
524af0d6 | 8957 | && !gfc_add_access (&sym->attr, attr.access, sym->name, NULL)) |
6de9cd9a | 8958 | return MATCH_ERROR; |
c3f34952 TB |
8959 | else if (sym->attr.access == ACCESS_UNKNOWN |
8960 | && gensym->attr.access != ACCESS_UNKNOWN | |
70112e2a | 8961 | && !gfc_add_access (&sym->attr, gensym->attr.access, |
524af0d6 | 8962 | sym->name, NULL)) |
c3f34952 TB |
8963 | return MATCH_ERROR; |
8964 | ||
8965 | if (sym->attr.access != ACCESS_UNKNOWN | |
8966 | && gensym->attr.access == ACCESS_UNKNOWN) | |
8967 | gensym->attr.access = sym->attr.access; | |
6de9cd9a | 8968 | |
a8b3b0b6 CR |
8969 | /* See if the derived type was labeled as bind(c). */ |
8970 | if (attr.is_bind_c != 0) | |
8971 | sym->attr.is_bind_c = attr.is_bind_c; | |
8972 | ||
34523524 DK |
8973 | /* Construct the f2k_derived namespace if it is not yet there. */ |
8974 | if (!sym->f2k_derived) | |
8975 | sym->f2k_derived = gfc_get_namespace (NULL, 0); | |
f5acf0f2 | 8976 | |
7d1f1e61 PT |
8977 | if (extended && !sym->components) |
8978 | { | |
8979 | gfc_component *p; | |
7d1f1e61 PT |
8980 | |
8981 | /* Add the extended derived type as the first component. */ | |
8982 | gfc_add_component (sym, parent, &p); | |
7d1f1e61 PT |
8983 | extended->refs++; |
8984 | gfc_set_sym_referenced (extended); | |
8985 | ||
8986 | p->ts.type = BT_DERIVED; | |
bc21d315 | 8987 | p->ts.u.derived = extended; |
7d1f1e61 | 8988 | p->initializer = gfc_default_initializer (&p->ts); |
f5acf0f2 | 8989 | |
7c1dab0d JW |
8990 | /* Set extension level. */ |
8991 | if (extended->attr.extension == 255) | |
8992 | { | |
8993 | /* Since the extension field is 8 bit wide, we can only have | |
8994 | up to 255 extension levels. */ | |
c4100eae | 8995 | gfc_error ("Maximum extension level reached with type %qs at %L", |
7c1dab0d JW |
8996 | extended->name, &extended->declared_at); |
8997 | return MATCH_ERROR; | |
8998 | } | |
8999 | sym->attr.extension = extended->attr.extension + 1; | |
7d1f1e61 PT |
9000 | |
9001 | /* Provide the links between the extended type and its extension. */ | |
9002 | if (!extended->f2k_derived) | |
9003 | extended->f2k_derived = gfc_get_namespace (NULL, 0); | |
7d1f1e61 PT |
9004 | } |
9005 | ||
7c1dab0d JW |
9006 | if (!sym->hash_value) |
9007 | /* Set the hash for the compound name for this type. */ | |
4fa02692 | 9008 | sym->hash_value = gfc_hash_value (sym); |
cf2b3c22 | 9009 | |
52f49934 DK |
9010 | /* Take over the ABSTRACT attribute. */ |
9011 | sym->attr.abstract = attr.abstract; | |
9012 | ||
6de9cd9a DN |
9013 | gfc_new_block = sym; |
9014 | ||
9015 | return MATCH_YES; | |
9016 | } | |
83d890b9 AL |
9017 | |
9018 | ||
f5acf0f2 | 9019 | /* Cray Pointees can be declared as: |
b3aefde2 | 9020 | pointer (ipt, a (n,m,...,*)) */ |
83d890b9 | 9021 | |
32e8bb8e | 9022 | match |
83d890b9 AL |
9023 | gfc_mod_pointee_as (gfc_array_spec *as) |
9024 | { | |
9025 | as->cray_pointee = true; /* This will be useful to know later. */ | |
9026 | if (as->type == AS_ASSUMED_SIZE) | |
b3aefde2 | 9027 | as->cp_was_assumed = true; |
83d890b9 AL |
9028 | else if (as->type == AS_ASSUMED_SHAPE) |
9029 | { | |
9030 | gfc_error ("Cray Pointee at %C cannot be assumed shape array"); | |
9031 | return MATCH_ERROR; | |
9032 | } | |
9033 | return MATCH_YES; | |
9034 | } | |
25d8f0a2 TS |
9035 | |
9036 | ||
f5acf0f2 PT |
9037 | /* Match the enum definition statement, here we are trying to match |
9038 | the first line of enum definition statement. | |
25d8f0a2 TS |
9039 | Returns MATCH_YES if match is found. */ |
9040 | ||
9041 | match | |
9042 | gfc_match_enum (void) | |
9043 | { | |
9044 | match m; | |
f5acf0f2 | 9045 | |
25d8f0a2 TS |
9046 | m = gfc_match_eos (); |
9047 | if (m != MATCH_YES) | |
9048 | return m; | |
9049 | ||
524af0d6 | 9050 | if (!gfc_notify_std (GFC_STD_F2003, "ENUM and ENUMERATOR at %C")) |
25d8f0a2 TS |
9051 | return MATCH_ERROR; |
9052 | ||
9053 | return MATCH_YES; | |
9054 | } | |
9055 | ||
9056 | ||
31224396 SK |
9057 | /* Returns an initializer whose value is one higher than the value of the |
9058 | LAST_INITIALIZER argument. If the argument is NULL, the | |
9059 | initializers value will be set to zero. The initializer's kind | |
9060 | will be set to gfc_c_int_kind. | |
9061 | ||
9062 | If -fshort-enums is given, the appropriate kind will be selected | |
9063 | later after all enumerators have been parsed. A warning is issued | |
9064 | here if an initializer exceeds gfc_c_int_kind. */ | |
9065 | ||
9066 | static gfc_expr * | |
9067 | enum_initializer (gfc_expr *last_initializer, locus where) | |
9068 | { | |
9069 | gfc_expr *result; | |
b7e75771 | 9070 | result = gfc_get_constant_expr (BT_INTEGER, gfc_c_int_kind, &where); |
31224396 SK |
9071 | |
9072 | mpz_init (result->value.integer); | |
9073 | ||
9074 | if (last_initializer != NULL) | |
9075 | { | |
9076 | mpz_add_ui (result->value.integer, last_initializer->value.integer, 1); | |
9077 | result->where = last_initializer->where; | |
9078 | ||
9079 | if (gfc_check_integer_range (result->value.integer, | |
9080 | gfc_c_int_kind) != ARITH_OK) | |
9081 | { | |
9082 | gfc_error ("Enumerator exceeds the C integer type at %C"); | |
9083 | return NULL; | |
9084 | } | |
9085 | } | |
9086 | else | |
9087 | { | |
9088 | /* Control comes here, if it's the very first enumerator and no | |
9089 | initializer has been given. It will be initialized to zero. */ | |
9090 | mpz_set_si (result->value.integer, 0); | |
9091 | } | |
9092 | ||
9093 | return result; | |
9094 | } | |
9095 | ||
9096 | ||
6133c68a TS |
9097 | /* Match a variable name with an optional initializer. When this |
9098 | subroutine is called, a variable is expected to be parsed next. | |
9099 | Depending on what is happening at the moment, updates either the | |
9100 | symbol table or the current interface. */ | |
9101 | ||
9102 | static match | |
9103 | enumerator_decl (void) | |
9104 | { | |
9105 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9106 | gfc_expr *initializer; | |
9107 | gfc_array_spec *as = NULL; | |
9108 | gfc_symbol *sym; | |
9109 | locus var_locus; | |
9110 | match m; | |
524af0d6 | 9111 | bool t; |
6133c68a TS |
9112 | locus old_locus; |
9113 | ||
9114 | initializer = NULL; | |
9115 | old_locus = gfc_current_locus; | |
9116 | ||
9117 | /* When we get here, we've just matched a list of attributes and | |
9118 | maybe a type and a double colon. The next thing we expect to see | |
9119 | is the name of the symbol. */ | |
9120 | m = gfc_match_name (name); | |
9121 | if (m != MATCH_YES) | |
9122 | goto cleanup; | |
9123 | ||
9124 | var_locus = gfc_current_locus; | |
9125 | ||
9126 | /* OK, we've successfully matched the declaration. Now put the | |
9127 | symbol in the current namespace. If we fail to create the symbol, | |
9128 | bail out. */ | |
524af0d6 | 9129 | if (!build_sym (name, NULL, false, &as, &var_locus)) |
6133c68a TS |
9130 | { |
9131 | m = MATCH_ERROR; | |
9132 | goto cleanup; | |
9133 | } | |
9134 | ||
9135 | /* The double colon must be present in order to have initializers. | |
9136 | Otherwise the statement is ambiguous with an assignment statement. */ | |
9137 | if (colon_seen) | |
9138 | { | |
9139 | if (gfc_match_char ('=') == MATCH_YES) | |
9140 | { | |
9141 | m = gfc_match_init_expr (&initializer); | |
9142 | if (m == MATCH_NO) | |
9143 | { | |
9144 | gfc_error ("Expected an initialization expression at %C"); | |
9145 | m = MATCH_ERROR; | |
9146 | } | |
9147 | ||
9148 | if (m != MATCH_YES) | |
9149 | goto cleanup; | |
9150 | } | |
9151 | } | |
9152 | ||
9153 | /* If we do not have an initializer, the initialization value of the | |
9154 | previous enumerator (stored in last_initializer) is incremented | |
9155 | by 1 and is used to initialize the current enumerator. */ | |
9156 | if (initializer == NULL) | |
31224396 | 9157 | initializer = enum_initializer (last_initializer, old_locus); |
d51347f9 | 9158 | |
6133c68a TS |
9159 | if (initializer == NULL || initializer->ts.type != BT_INTEGER) |
9160 | { | |
01e64c3d JJ |
9161 | gfc_error ("ENUMERATOR %L not initialized with integer expression", |
9162 | &var_locus); | |
d51347f9 | 9163 | m = MATCH_ERROR; |
6133c68a TS |
9164 | goto cleanup; |
9165 | } | |
9166 | ||
9167 | /* Store this current initializer, for the next enumerator variable | |
9168 | to be parsed. add_init_expr_to_sym() zeros initializer, so we | |
9169 | use last_initializer below. */ | |
9170 | last_initializer = initializer; | |
9171 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
9172 | ||
9173 | /* Maintain enumerator history. */ | |
9174 | gfc_find_symbol (name, NULL, 0, &sym); | |
9175 | create_enum_history (sym, last_initializer); | |
9176 | ||
524af0d6 | 9177 | return (t) ? MATCH_YES : MATCH_ERROR; |
6133c68a TS |
9178 | |
9179 | cleanup: | |
9180 | /* Free stuff up and return. */ | |
9181 | gfc_free_expr (initializer); | |
9182 | ||
9183 | return m; | |
9184 | } | |
9185 | ||
9186 | ||
66e4ab31 | 9187 | /* Match the enumerator definition statement. */ |
25d8f0a2 TS |
9188 | |
9189 | match | |
9190 | gfc_match_enumerator_def (void) | |
9191 | { | |
9192 | match m; | |
524af0d6 | 9193 | bool t; |
d51347f9 | 9194 | |
25d8f0a2 | 9195 | gfc_clear_ts (¤t_ts); |
d51347f9 | 9196 | |
25d8f0a2 TS |
9197 | m = gfc_match (" enumerator"); |
9198 | if (m != MATCH_YES) | |
9199 | return m; | |
6133c68a TS |
9200 | |
9201 | m = gfc_match (" :: "); | |
9202 | if (m == MATCH_ERROR) | |
9203 | return m; | |
9204 | ||
9205 | colon_seen = (m == MATCH_YES); | |
d51347f9 | 9206 | |
25d8f0a2 TS |
9207 | if (gfc_current_state () != COMP_ENUM) |
9208 | { | |
9209 | gfc_error ("ENUM definition statement expected before %C"); | |
9210 | gfc_free_enum_history (); | |
9211 | return MATCH_ERROR; | |
9212 | } | |
9213 | ||
9214 | (¤t_ts)->type = BT_INTEGER; | |
9215 | (¤t_ts)->kind = gfc_c_int_kind; | |
d51347f9 | 9216 | |
6133c68a TS |
9217 | gfc_clear_attr (¤t_attr); |
9218 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, NULL); | |
524af0d6 | 9219 | if (!t) |
25d8f0a2 | 9220 | { |
6133c68a | 9221 | m = MATCH_ERROR; |
25d8f0a2 TS |
9222 | goto cleanup; |
9223 | } | |
9224 | ||
25d8f0a2 TS |
9225 | for (;;) |
9226 | { | |
6133c68a | 9227 | m = enumerator_decl (); |
25d8f0a2 | 9228 | if (m == MATCH_ERROR) |
01e64c3d JJ |
9229 | { |
9230 | gfc_free_enum_history (); | |
9231 | goto cleanup; | |
9232 | } | |
25d8f0a2 TS |
9233 | if (m == MATCH_NO) |
9234 | break; | |
9235 | ||
9236 | if (gfc_match_eos () == MATCH_YES) | |
9237 | goto cleanup; | |
9238 | if (gfc_match_char (',') != MATCH_YES) | |
9239 | break; | |
9240 | } | |
9241 | ||
9242 | if (gfc_current_state () == COMP_ENUM) | |
9243 | { | |
9244 | gfc_free_enum_history (); | |
9245 | gfc_error ("Syntax error in ENUMERATOR definition at %C"); | |
9246 | m = MATCH_ERROR; | |
9247 | } | |
9248 | ||
9249 | cleanup: | |
9250 | gfc_free_array_spec (current_as); | |
9251 | current_as = NULL; | |
9252 | return m; | |
9253 | ||
9254 | } | |
9255 | ||
f6fad28e | 9256 | |
30b608eb DK |
9257 | /* Match binding attributes. */ |
9258 | ||
9259 | static match | |
713485cc | 9260 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc) |
30b608eb DK |
9261 | { |
9262 | bool found_passing = false; | |
713485cc | 9263 | bool seen_ptr = false; |
90661f26 | 9264 | match m = MATCH_YES; |
30b608eb | 9265 | |
eea58adb | 9266 | /* Initialize to defaults. Do so even before the MATCH_NO check so that in |
30b608eb DK |
9267 | this case the defaults are in there. */ |
9268 | ba->access = ACCESS_UNKNOWN; | |
9269 | ba->pass_arg = NULL; | |
9270 | ba->pass_arg_num = 0; | |
9271 | ba->nopass = 0; | |
9272 | ba->non_overridable = 0; | |
b0e5fa94 | 9273 | ba->deferred = 0; |
90661f26 | 9274 | ba->ppc = ppc; |
30b608eb DK |
9275 | |
9276 | /* If we find a comma, we believe there are binding attributes. */ | |
90661f26 JW |
9277 | m = gfc_match_char (','); |
9278 | if (m == MATCH_NO) | |
9279 | goto done; | |
30b608eb DK |
9280 | |
9281 | do | |
9282 | { | |
e157f736 DK |
9283 | /* Access specifier. */ |
9284 | ||
9285 | m = gfc_match (" public"); | |
30b608eb DK |
9286 | if (m == MATCH_ERROR) |
9287 | goto error; | |
9288 | if (m == MATCH_YES) | |
9289 | { | |
e157f736 | 9290 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 9291 | { |
e157f736 | 9292 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
9293 | goto error; |
9294 | } | |
9295 | ||
e157f736 | 9296 | ba->access = ACCESS_PUBLIC; |
30b608eb DK |
9297 | continue; |
9298 | } | |
9299 | ||
e157f736 | 9300 | m = gfc_match (" private"); |
30b608eb DK |
9301 | if (m == MATCH_ERROR) |
9302 | goto error; | |
9303 | if (m == MATCH_YES) | |
9304 | { | |
e157f736 | 9305 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 9306 | { |
e157f736 | 9307 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
9308 | goto error; |
9309 | } | |
9310 | ||
e157f736 | 9311 | ba->access = ACCESS_PRIVATE; |
30b608eb DK |
9312 | continue; |
9313 | } | |
9314 | ||
e157f736 DK |
9315 | /* If inside GENERIC, the following is not allowed. */ |
9316 | if (!generic) | |
30b608eb | 9317 | { |
30b608eb | 9318 | |
e157f736 DK |
9319 | /* NOPASS flag. */ |
9320 | m = gfc_match (" nopass"); | |
9321 | if (m == MATCH_ERROR) | |
9322 | goto error; | |
9323 | if (m == MATCH_YES) | |
30b608eb | 9324 | { |
e157f736 DK |
9325 | if (found_passing) |
9326 | { | |
9327 | gfc_error ("Binding attributes already specify passing," | |
9328 | " illegal NOPASS at %C"); | |
9329 | goto error; | |
9330 | } | |
9331 | ||
9332 | found_passing = true; | |
9333 | ba->nopass = 1; | |
9334 | continue; | |
30b608eb DK |
9335 | } |
9336 | ||
e157f736 DK |
9337 | /* PASS possibly including argument. */ |
9338 | m = gfc_match (" pass"); | |
9339 | if (m == MATCH_ERROR) | |
9340 | goto error; | |
9341 | if (m == MATCH_YES) | |
30b608eb | 9342 | { |
e157f736 DK |
9343 | char arg[GFC_MAX_SYMBOL_LEN + 1]; |
9344 | ||
9345 | if (found_passing) | |
9346 | { | |
9347 | gfc_error ("Binding attributes already specify passing," | |
9348 | " illegal PASS at %C"); | |
9349 | goto error; | |
9350 | } | |
9351 | ||
9352 | m = gfc_match (" ( %n )", arg); | |
9353 | if (m == MATCH_ERROR) | |
9354 | goto error; | |
9355 | if (m == MATCH_YES) | |
51f03c6b | 9356 | ba->pass_arg = gfc_get_string ("%s", arg); |
e157f736 DK |
9357 | gcc_assert ((m == MATCH_YES) == (ba->pass_arg != NULL)); |
9358 | ||
9359 | found_passing = true; | |
9360 | ba->nopass = 0; | |
9361 | continue; | |
30b608eb DK |
9362 | } |
9363 | ||
713485cc JW |
9364 | if (ppc) |
9365 | { | |
9366 | /* POINTER flag. */ | |
9367 | m = gfc_match (" pointer"); | |
9368 | if (m == MATCH_ERROR) | |
9369 | goto error; | |
9370 | if (m == MATCH_YES) | |
9371 | { | |
9372 | if (seen_ptr) | |
9373 | { | |
9374 | gfc_error ("Duplicate POINTER attribute at %C"); | |
9375 | goto error; | |
9376 | } | |
9377 | ||
9378 | seen_ptr = true; | |
713485cc JW |
9379 | continue; |
9380 | } | |
9381 | } | |
9382 | else | |
9383 | { | |
9384 | /* NON_OVERRIDABLE flag. */ | |
9385 | m = gfc_match (" non_overridable"); | |
9386 | if (m == MATCH_ERROR) | |
9387 | goto error; | |
9388 | if (m == MATCH_YES) | |
9389 | { | |
9390 | if (ba->non_overridable) | |
9391 | { | |
9392 | gfc_error ("Duplicate NON_OVERRIDABLE at %C"); | |
9393 | goto error; | |
9394 | } | |
9395 | ||
9396 | ba->non_overridable = 1; | |
9397 | continue; | |
9398 | } | |
9399 | ||
9400 | /* DEFERRED flag. */ | |
9401 | m = gfc_match (" deferred"); | |
9402 | if (m == MATCH_ERROR) | |
9403 | goto error; | |
9404 | if (m == MATCH_YES) | |
9405 | { | |
9406 | if (ba->deferred) | |
9407 | { | |
9408 | gfc_error ("Duplicate DEFERRED at %C"); | |
9409 | goto error; | |
9410 | } | |
9411 | ||
9412 | ba->deferred = 1; | |
9413 | continue; | |
9414 | } | |
9415 | } | |
9416 | ||
30b608eb DK |
9417 | } |
9418 | ||
9419 | /* Nothing matching found. */ | |
e157f736 DK |
9420 | if (generic) |
9421 | gfc_error ("Expected access-specifier at %C"); | |
9422 | else | |
9423 | gfc_error ("Expected binding attribute at %C"); | |
30b608eb DK |
9424 | goto error; |
9425 | } | |
9426 | while (gfc_match_char (',') == MATCH_YES); | |
9427 | ||
b0e5fa94 DK |
9428 | /* NON_OVERRIDABLE and DEFERRED exclude themselves. */ |
9429 | if (ba->non_overridable && ba->deferred) | |
9430 | { | |
9431 | gfc_error ("NON_OVERRIDABLE and DEFERRED can't both appear at %C"); | |
9432 | goto error; | |
9433 | } | |
9434 | ||
90661f26 JW |
9435 | m = MATCH_YES; |
9436 | ||
9437 | done: | |
e157f736 DK |
9438 | if (ba->access == ACCESS_UNKNOWN) |
9439 | ba->access = gfc_typebound_default_access; | |
9440 | ||
713485cc JW |
9441 | if (ppc && !seen_ptr) |
9442 | { | |
9443 | gfc_error ("POINTER attribute is required for procedure pointer component" | |
9444 | " at %C"); | |
9445 | goto error; | |
9446 | } | |
9447 | ||
90661f26 | 9448 | return m; |
30b608eb DK |
9449 | |
9450 | error: | |
30b608eb DK |
9451 | return MATCH_ERROR; |
9452 | } | |
9453 | ||
9454 | ||
9455 | /* Match a PROCEDURE specific binding inside a derived type. */ | |
9456 | ||
9457 | static match | |
9458 | match_procedure_in_type (void) | |
9459 | { | |
9460 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9461 | char target_buf[GFC_MAX_SYMBOL_LEN + 1]; | |
1be17993 | 9462 | char* target = NULL, *ifc = NULL; |
3e15518b | 9463 | gfc_typebound_proc tb; |
30b608eb DK |
9464 | bool seen_colons; |
9465 | bool seen_attrs; | |
9466 | match m; | |
9467 | gfc_symtree* stree; | |
9468 | gfc_namespace* ns; | |
9469 | gfc_symbol* block; | |
1be17993 | 9470 | int num; |
30b608eb DK |
9471 | |
9472 | /* Check current state. */ | |
9473 | gcc_assert (gfc_state_stack->state == COMP_DERIVED_CONTAINS); | |
9474 | block = gfc_state_stack->previous->sym; | |
9475 | gcc_assert (block); | |
9476 | ||
b0e5fa94 | 9477 | /* Try to match PROCEDURE(interface). */ |
30b608eb DK |
9478 | if (gfc_match (" (") == MATCH_YES) |
9479 | { | |
b0e5fa94 DK |
9480 | m = gfc_match_name (target_buf); |
9481 | if (m == MATCH_ERROR) | |
9482 | return m; | |
9483 | if (m != MATCH_YES) | |
9484 | { | |
a4d9b221 | 9485 | gfc_error ("Interface-name expected after %<(%> at %C"); |
b0e5fa94 DK |
9486 | return MATCH_ERROR; |
9487 | } | |
9488 | ||
9489 | if (gfc_match (" )") != MATCH_YES) | |
9490 | { | |
a4d9b221 | 9491 | gfc_error ("%<)%> expected at %C"); |
b0e5fa94 DK |
9492 | return MATCH_ERROR; |
9493 | } | |
9494 | ||
1be17993 | 9495 | ifc = target_buf; |
30b608eb DK |
9496 | } |
9497 | ||
9498 | /* Construct the data structure. */ | |
ff5b6492 | 9499 | memset (&tb, 0, sizeof (tb)); |
3e15518b | 9500 | tb.where = gfc_current_locus; |
30b608eb DK |
9501 | |
9502 | /* Match binding attributes. */ | |
3e15518b | 9503 | m = match_binding_attributes (&tb, false, false); |
30b608eb DK |
9504 | if (m == MATCH_ERROR) |
9505 | return m; | |
9506 | seen_attrs = (m == MATCH_YES); | |
9507 | ||
1be17993 | 9508 | /* Check that attribute DEFERRED is given if an interface is specified. */ |
3e15518b | 9509 | if (tb.deferred && !ifc) |
b0e5fa94 DK |
9510 | { |
9511 | gfc_error ("Interface must be specified for DEFERRED binding at %C"); | |
9512 | return MATCH_ERROR; | |
9513 | } | |
3e15518b | 9514 | if (ifc && !tb.deferred) |
b0e5fa94 DK |
9515 | { |
9516 | gfc_error ("PROCEDURE(interface) at %C should be declared DEFERRED"); | |
9517 | return MATCH_ERROR; | |
9518 | } | |
9519 | ||
30b608eb DK |
9520 | /* Match the colons. */ |
9521 | m = gfc_match (" ::"); | |
9522 | if (m == MATCH_ERROR) | |
9523 | return m; | |
9524 | seen_colons = (m == MATCH_YES); | |
9525 | if (seen_attrs && !seen_colons) | |
9526 | { | |
a4d9b221 | 9527 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
30b608eb DK |
9528 | return MATCH_ERROR; |
9529 | } | |
9530 | ||
f5acf0f2 | 9531 | /* Match the binding names. */ |
1be17993 | 9532 | for(num=1;;num++) |
30b608eb | 9533 | { |
1be17993 JW |
9534 | m = gfc_match_name (name); |
9535 | if (m == MATCH_ERROR) | |
9536 | return m; | |
9537 | if (m == MATCH_NO) | |
b0e5fa94 | 9538 | { |
1be17993 | 9539 | gfc_error ("Expected binding name at %C"); |
b0e5fa94 DK |
9540 | return MATCH_ERROR; |
9541 | } | |
9542 | ||
524af0d6 | 9543 | if (num>1 && !gfc_notify_std (GFC_STD_F2008, "PROCEDURE list at %C")) |
1be17993 | 9544 | return MATCH_ERROR; |
30b608eb | 9545 | |
1be17993 JW |
9546 | /* Try to match the '=> target', if it's there. */ |
9547 | target = ifc; | |
9548 | m = gfc_match (" =>"); | |
30b608eb DK |
9549 | if (m == MATCH_ERROR) |
9550 | return m; | |
1be17993 | 9551 | if (m == MATCH_YES) |
30b608eb | 9552 | { |
3e15518b | 9553 | if (tb.deferred) |
1be17993 | 9554 | { |
a4d9b221 | 9555 | gfc_error ("%<=> target%> is invalid for DEFERRED binding at %C"); |
1be17993 JW |
9556 | return MATCH_ERROR; |
9557 | } | |
9558 | ||
9559 | if (!seen_colons) | |
9560 | { | |
a4d9b221 | 9561 | gfc_error ("%<::%> needed in PROCEDURE binding with explicit target" |
1be17993 JW |
9562 | " at %C"); |
9563 | return MATCH_ERROR; | |
9564 | } | |
9565 | ||
9566 | m = gfc_match_name (target_buf); | |
9567 | if (m == MATCH_ERROR) | |
9568 | return m; | |
9569 | if (m == MATCH_NO) | |
9570 | { | |
a4d9b221 | 9571 | gfc_error ("Expected binding target after %<=>%> at %C"); |
1be17993 JW |
9572 | return MATCH_ERROR; |
9573 | } | |
9574 | target = target_buf; | |
30b608eb | 9575 | } |
30b608eb | 9576 | |
1be17993 JW |
9577 | /* If no target was found, it has the same name as the binding. */ |
9578 | if (!target) | |
9579 | target = name; | |
30b608eb | 9580 | |
1be17993 JW |
9581 | /* Get the namespace to insert the symbols into. */ |
9582 | ns = block->f2k_derived; | |
9583 | gcc_assert (ns); | |
30b608eb | 9584 | |
1be17993 | 9585 | /* If the binding is DEFERRED, check that the containing type is ABSTRACT. */ |
3e15518b | 9586 | if (tb.deferred && !block->attr.abstract) |
1be17993 | 9587 | { |
c4100eae | 9588 | gfc_error ("Type %qs containing DEFERRED binding at %C " |
1be17993 JW |
9589 | "is not ABSTRACT", block->name); |
9590 | return MATCH_ERROR; | |
9591 | } | |
30b608eb | 9592 | |
1be17993 | 9593 | /* See if we already have a binding with this name in the symtree which |
6bd2c800 | 9594 | would be an error. If a GENERIC already targeted this binding, it may |
1be17993 JW |
9595 | be already there but then typebound is still NULL. */ |
9596 | stree = gfc_find_symtree (ns->tb_sym_root, name); | |
9f23af48 | 9597 | if (stree && stree->n.tb) |
1be17993 | 9598 | { |
c4100eae MLI |
9599 | gfc_error ("There is already a procedure with binding name %qs for " |
9600 | "the derived type %qs at %C", name, block->name); | |
1be17993 JW |
9601 | return MATCH_ERROR; |
9602 | } | |
b0e5fa94 | 9603 | |
1be17993 | 9604 | /* Insert it and set attributes. */ |
30b608eb | 9605 | |
9f23af48 MM |
9606 | if (!stree) |
9607 | { | |
9608 | stree = gfc_new_symtree (&ns->tb_sym_root, name); | |
9609 | gcc_assert (stree); | |
9610 | } | |
3e15518b | 9611 | stree->n.tb = gfc_get_typebound_proc (&tb); |
e34ccb4c | 9612 | |
3e15518b JW |
9613 | if (gfc_get_sym_tree (target, gfc_current_ns, &stree->n.tb->u.specific, |
9614 | false)) | |
1be17993 | 9615 | return MATCH_ERROR; |
3e15518b | 9616 | gfc_set_sym_referenced (stree->n.tb->u.specific->n.sym); |
f9d49cd1 JW |
9617 | gfc_add_flavor(&stree->n.tb->u.specific->n.sym->attr, FL_PROCEDURE, |
9618 | target, &stree->n.tb->u.specific->n.sym->declared_at); | |
f5acf0f2 | 9619 | |
1be17993 JW |
9620 | if (gfc_match_eos () == MATCH_YES) |
9621 | return MATCH_YES; | |
9622 | if (gfc_match_char (',') != MATCH_YES) | |
9623 | goto syntax; | |
e34ccb4c | 9624 | } |
30b608eb | 9625 | |
1be17993 JW |
9626 | syntax: |
9627 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
9628 | return MATCH_ERROR; | |
30b608eb DK |
9629 | } |
9630 | ||
9631 | ||
e157f736 DK |
9632 | /* Match a GENERIC procedure binding inside a derived type. */ |
9633 | ||
9634 | match | |
9635 | gfc_match_generic (void) | |
9636 | { | |
9637 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
94747289 | 9638 | char bind_name[GFC_MAX_SYMBOL_LEN + 16]; /* Allow space for OPERATOR(...). */ |
e157f736 DK |
9639 | gfc_symbol* block; |
9640 | gfc_typebound_proc tbattr; /* Used for match_binding_attributes. */ | |
9641 | gfc_typebound_proc* tb; | |
e157f736 | 9642 | gfc_namespace* ns; |
94747289 DK |
9643 | interface_type op_type; |
9644 | gfc_intrinsic_op op; | |
e157f736 DK |
9645 | match m; |
9646 | ||
9647 | /* Check current state. */ | |
9648 | if (gfc_current_state () == COMP_DERIVED) | |
9649 | { | |
9650 | gfc_error ("GENERIC at %C must be inside a derived-type CONTAINS"); | |
9651 | return MATCH_ERROR; | |
9652 | } | |
9653 | if (gfc_current_state () != COMP_DERIVED_CONTAINS) | |
9654 | return MATCH_NO; | |
9655 | block = gfc_state_stack->previous->sym; | |
9656 | ns = block->f2k_derived; | |
9657 | gcc_assert (block && ns); | |
9658 | ||
ff5b6492 MM |
9659 | memset (&tbattr, 0, sizeof (tbattr)); |
9660 | tbattr.where = gfc_current_locus; | |
9661 | ||
e157f736 | 9662 | /* See if we get an access-specifier. */ |
713485cc | 9663 | m = match_binding_attributes (&tbattr, true, false); |
e157f736 DK |
9664 | if (m == MATCH_ERROR) |
9665 | goto error; | |
9666 | ||
9667 | /* Now the colons, those are required. */ | |
9668 | if (gfc_match (" ::") != MATCH_YES) | |
9669 | { | |
a4d9b221 | 9670 | gfc_error ("Expected %<::%> at %C"); |
e157f736 DK |
9671 | goto error; |
9672 | } | |
9673 | ||
94747289 DK |
9674 | /* Match the binding name; depending on type (operator / generic) format |
9675 | it for future error messages into bind_name. */ | |
f5acf0f2 | 9676 | |
94747289 | 9677 | m = gfc_match_generic_spec (&op_type, name, &op); |
e157f736 DK |
9678 | if (m == MATCH_ERROR) |
9679 | return MATCH_ERROR; | |
9680 | if (m == MATCH_NO) | |
9681 | { | |
94747289 | 9682 | gfc_error ("Expected generic name or operator descriptor at %C"); |
e157f736 DK |
9683 | goto error; |
9684 | } | |
9685 | ||
94747289 | 9686 | switch (op_type) |
e157f736 | 9687 | { |
94747289 | 9688 | case INTERFACE_GENERIC: |
e73d3ca6 | 9689 | case INTERFACE_DTIO: |
94747289 DK |
9690 | snprintf (bind_name, sizeof (bind_name), "%s", name); |
9691 | break; | |
f5acf0f2 | 9692 | |
94747289 DK |
9693 | case INTERFACE_USER_OP: |
9694 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(.%s.)", name); | |
9695 | break; | |
f5acf0f2 | 9696 | |
94747289 DK |
9697 | case INTERFACE_INTRINSIC_OP: |
9698 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(%s)", | |
9699 | gfc_op2string (op)); | |
9700 | break; | |
9701 | ||
377e37c1 SK |
9702 | case INTERFACE_NAMELESS: |
9703 | gfc_error ("Malformed GENERIC statement at %C"); | |
9704 | goto error; | |
9705 | break; | |
9706 | ||
94747289 DK |
9707 | default: |
9708 | gcc_unreachable (); | |
9709 | } | |
e34ccb4c | 9710 | |
94747289 DK |
9711 | /* Match the required =>. */ |
9712 | if (gfc_match (" =>") != MATCH_YES) | |
9713 | { | |
a4d9b221 | 9714 | gfc_error ("Expected %<=>%> at %C"); |
94747289 DK |
9715 | goto error; |
9716 | } | |
f5acf0f2 | 9717 | |
94747289 DK |
9718 | /* Try to find existing GENERIC binding with this name / for this operator; |
9719 | if there is something, check that it is another GENERIC and then extend | |
9720 | it rather than building a new node. Otherwise, create it and put it | |
9721 | at the right position. */ | |
9722 | ||
9723 | switch (op_type) | |
9724 | { | |
e73d3ca6 | 9725 | case INTERFACE_DTIO: |
94747289 DK |
9726 | case INTERFACE_USER_OP: |
9727 | case INTERFACE_GENERIC: | |
9728 | { | |
9729 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
9730 | gfc_symtree* st; | |
9731 | ||
9732 | st = gfc_find_symtree (is_op ? ns->tb_uop_root : ns->tb_sym_root, name); | |
b93d8a3f | 9733 | tb = st ? st->n.tb : NULL; |
94747289 DK |
9734 | break; |
9735 | } | |
9736 | ||
9737 | case INTERFACE_INTRINSIC_OP: | |
9738 | tb = ns->tb_op[op]; | |
9739 | break; | |
9740 | ||
9741 | default: | |
9742 | gcc_unreachable (); | |
9743 | } | |
9744 | ||
9745 | if (tb) | |
9746 | { | |
e34ccb4c | 9747 | if (!tb->is_generic) |
e157f736 | 9748 | { |
94747289 | 9749 | gcc_assert (op_type == INTERFACE_GENERIC); |
e157f736 | 9750 | gfc_error ("There's already a non-generic procedure with binding name" |
c4100eae | 9751 | " %qs for the derived type %qs at %C", |
94747289 | 9752 | bind_name, block->name); |
e157f736 DK |
9753 | goto error; |
9754 | } | |
9755 | ||
e157f736 DK |
9756 | if (tb->access != tbattr.access) |
9757 | { | |
9758 | gfc_error ("Binding at %C must have the same access as already" | |
c4100eae | 9759 | " defined binding %qs", bind_name); |
e157f736 DK |
9760 | goto error; |
9761 | } | |
9762 | } | |
9763 | else | |
9764 | { | |
3e15518b | 9765 | tb = gfc_get_typebound_proc (NULL); |
e157f736 DK |
9766 | tb->where = gfc_current_locus; |
9767 | tb->access = tbattr.access; | |
9768 | tb->is_generic = 1; | |
9769 | tb->u.generic = NULL; | |
94747289 DK |
9770 | |
9771 | switch (op_type) | |
9772 | { | |
e73d3ca6 | 9773 | case INTERFACE_DTIO: |
94747289 DK |
9774 | case INTERFACE_GENERIC: |
9775 | case INTERFACE_USER_OP: | |
9776 | { | |
9777 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
b93d8a3f JW |
9778 | gfc_symtree* st = gfc_get_tbp_symtree (is_op ? &ns->tb_uop_root : |
9779 | &ns->tb_sym_root, name); | |
94747289 DK |
9780 | gcc_assert (st); |
9781 | st->n.tb = tb; | |
9782 | ||
9783 | break; | |
9784 | } | |
f5acf0f2 | 9785 | |
94747289 DK |
9786 | case INTERFACE_INTRINSIC_OP: |
9787 | ns->tb_op[op] = tb; | |
9788 | break; | |
9789 | ||
9790 | default: | |
9791 | gcc_unreachable (); | |
9792 | } | |
e157f736 DK |
9793 | } |
9794 | ||
9795 | /* Now, match all following names as specific targets. */ | |
9796 | do | |
9797 | { | |
9798 | gfc_symtree* target_st; | |
9799 | gfc_tbp_generic* target; | |
9800 | ||
9801 | m = gfc_match_name (name); | |
9802 | if (m == MATCH_ERROR) | |
9803 | goto error; | |
9804 | if (m == MATCH_NO) | |
9805 | { | |
9806 | gfc_error ("Expected specific binding name at %C"); | |
9807 | goto error; | |
9808 | } | |
9809 | ||
e34ccb4c | 9810 | target_st = gfc_get_tbp_symtree (&ns->tb_sym_root, name); |
e157f736 DK |
9811 | |
9812 | /* See if this is a duplicate specification. */ | |
9813 | for (target = tb->u.generic; target; target = target->next) | |
9814 | if (target_st == target->specific_st) | |
9815 | { | |
c4100eae MLI |
9816 | gfc_error ("%qs already defined as specific binding for the" |
9817 | " generic %qs at %C", name, bind_name); | |
e157f736 DK |
9818 | goto error; |
9819 | } | |
9820 | ||
e157f736 DK |
9821 | target = gfc_get_tbp_generic (); |
9822 | target->specific_st = target_st; | |
9823 | target->specific = NULL; | |
9824 | target->next = tb->u.generic; | |
218e1228 TB |
9825 | target->is_operator = ((op_type == INTERFACE_USER_OP) |
9826 | || (op_type == INTERFACE_INTRINSIC_OP)); | |
e157f736 DK |
9827 | tb->u.generic = target; |
9828 | } | |
9829 | while (gfc_match (" ,") == MATCH_YES); | |
9830 | ||
9831 | /* Here should be the end. */ | |
9832 | if (gfc_match_eos () != MATCH_YES) | |
9833 | { | |
9834 | gfc_error ("Junk after GENERIC binding at %C"); | |
9835 | goto error; | |
9836 | } | |
9837 | ||
9838 | return MATCH_YES; | |
9839 | ||
9840 | error: | |
9841 | return MATCH_ERROR; | |
9842 | } | |
9843 | ||
9844 | ||
34523524 DK |
9845 | /* Match a FINAL declaration inside a derived type. */ |
9846 | ||
9847 | match | |
9848 | gfc_match_final_decl (void) | |
9849 | { | |
9850 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9851 | gfc_symbol* sym; | |
9852 | match m; | |
9853 | gfc_namespace* module_ns; | |
9854 | bool first, last; | |
30b608eb | 9855 | gfc_symbol* block; |
34523524 | 9856 | |
33344e0f JW |
9857 | if (gfc_current_form == FORM_FREE) |
9858 | { | |
9859 | char c = gfc_peek_ascii_char (); | |
9860 | if (!gfc_is_whitespace (c) && c != ':') | |
9861 | return MATCH_NO; | |
9862 | } | |
f5acf0f2 | 9863 | |
30b608eb | 9864 | if (gfc_state_stack->state != COMP_DERIVED_CONTAINS) |
34523524 | 9865 | { |
33344e0f JW |
9866 | if (gfc_current_form == FORM_FIXED) |
9867 | return MATCH_NO; | |
9868 | ||
34523524 | 9869 | gfc_error ("FINAL declaration at %C must be inside a derived type " |
30b608eb | 9870 | "CONTAINS section"); |
34523524 DK |
9871 | return MATCH_ERROR; |
9872 | } | |
9873 | ||
30b608eb DK |
9874 | block = gfc_state_stack->previous->sym; |
9875 | gcc_assert (block); | |
34523524 | 9876 | |
30b608eb DK |
9877 | if (!gfc_state_stack->previous || !gfc_state_stack->previous->previous |
9878 | || gfc_state_stack->previous->previous->state != COMP_MODULE) | |
34523524 DK |
9879 | { |
9880 | gfc_error ("Derived type declaration with FINAL at %C must be in the" | |
9881 | " specification part of a MODULE"); | |
9882 | return MATCH_ERROR; | |
9883 | } | |
9884 | ||
9885 | module_ns = gfc_current_ns; | |
9886 | gcc_assert (module_ns); | |
9887 | gcc_assert (module_ns->proc_name->attr.flavor == FL_MODULE); | |
9888 | ||
9889 | /* Match optional ::, don't care about MATCH_YES or MATCH_NO. */ | |
9890 | if (gfc_match (" ::") == MATCH_ERROR) | |
9891 | return MATCH_ERROR; | |
9892 | ||
9893 | /* Match the sequence of procedure names. */ | |
9894 | first = true; | |
9895 | last = false; | |
9896 | do | |
9897 | { | |
9898 | gfc_finalizer* f; | |
9899 | ||
9900 | if (first && gfc_match_eos () == MATCH_YES) | |
9901 | { | |
9902 | gfc_error ("Empty FINAL at %C"); | |
9903 | return MATCH_ERROR; | |
9904 | } | |
9905 | ||
9906 | m = gfc_match_name (name); | |
9907 | if (m == MATCH_NO) | |
9908 | { | |
9909 | gfc_error ("Expected module procedure name at %C"); | |
9910 | return MATCH_ERROR; | |
9911 | } | |
9912 | else if (m != MATCH_YES) | |
9913 | return MATCH_ERROR; | |
9914 | ||
9915 | if (gfc_match_eos () == MATCH_YES) | |
9916 | last = true; | |
9917 | if (!last && gfc_match_char (',') != MATCH_YES) | |
9918 | { | |
a4d9b221 | 9919 | gfc_error ("Expected %<,%> at %C"); |
34523524 DK |
9920 | return MATCH_ERROR; |
9921 | } | |
9922 | ||
9923 | if (gfc_get_symbol (name, module_ns, &sym)) | |
9924 | { | |
c4100eae | 9925 | gfc_error ("Unknown procedure name %qs at %C", name); |
34523524 DK |
9926 | return MATCH_ERROR; |
9927 | } | |
9928 | ||
9929 | /* Mark the symbol as module procedure. */ | |
9930 | if (sym->attr.proc != PROC_MODULE | |
524af0d6 | 9931 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
34523524 DK |
9932 | return MATCH_ERROR; |
9933 | ||
9934 | /* Check if we already have this symbol in the list, this is an error. */ | |
30b608eb | 9935 | for (f = block->f2k_derived->finalizers; f; f = f->next) |
f6fad28e | 9936 | if (f->proc_sym == sym) |
34523524 | 9937 | { |
c4100eae | 9938 | gfc_error ("%qs at %C is already defined as FINAL procedure!", |
34523524 DK |
9939 | name); |
9940 | return MATCH_ERROR; | |
9941 | } | |
9942 | ||
9943 | /* Add this symbol to the list of finalizers. */ | |
30b608eb | 9944 | gcc_assert (block->f2k_derived); |
2050626a | 9945 | sym->refs++; |
ece3f663 | 9946 | f = XCNEW (gfc_finalizer); |
f6fad28e DK |
9947 | f->proc_sym = sym; |
9948 | f->proc_tree = NULL; | |
34523524 | 9949 | f->where = gfc_current_locus; |
30b608eb DK |
9950 | f->next = block->f2k_derived->finalizers; |
9951 | block->f2k_derived->finalizers = f; | |
34523524 DK |
9952 | |
9953 | first = false; | |
9954 | } | |
9955 | while (!last); | |
9956 | ||
9957 | return MATCH_YES; | |
9958 | } | |
08a6b8e0 TB |
9959 | |
9960 | ||
9961 | const ext_attr_t ext_attr_list[] = { | |
e7ac6a7c TB |
9962 | { "dllimport", EXT_ATTR_DLLIMPORT, "dllimport" }, |
9963 | { "dllexport", EXT_ATTR_DLLEXPORT, "dllexport" }, | |
9964 | { "cdecl", EXT_ATTR_CDECL, "cdecl" }, | |
9965 | { "stdcall", EXT_ATTR_STDCALL, "stdcall" }, | |
9966 | { "fastcall", EXT_ATTR_FASTCALL, "fastcall" }, | |
9967 | { "no_arg_check", EXT_ATTR_NO_ARG_CHECK, NULL }, | |
9968 | { NULL, EXT_ATTR_LAST, NULL } | |
08a6b8e0 TB |
9969 | }; |
9970 | ||
9971 | /* Match a !GCC$ ATTRIBUTES statement of the form: | |
9972 | !GCC$ ATTRIBUTES attribute-list :: var-name [, var-name] ... | |
9973 | When we come here, we have already matched the !GCC$ ATTRIBUTES string. | |
9974 | ||
9975 | TODO: We should support all GCC attributes using the same syntax for | |
9976 | the attribute list, i.e. the list in C | |
9977 | __attributes(( attribute-list )) | |
9978 | matches then | |
9979 | !GCC$ ATTRIBUTES attribute-list :: | |
9980 | Cf. c-parser.c's c_parser_attributes; the data can then directly be | |
9981 | saved into a TREE. | |
9982 | ||
9983 | As there is absolutely no risk of confusion, we should never return | |
9984 | MATCH_NO. */ | |
9985 | match | |
9986 | gfc_match_gcc_attributes (void) | |
f5acf0f2 | 9987 | { |
08a6b8e0 TB |
9988 | symbol_attribute attr; |
9989 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9990 | unsigned id; | |
9991 | gfc_symbol *sym; | |
9992 | match m; | |
9993 | ||
9994 | gfc_clear_attr (&attr); | |
9995 | for(;;) | |
9996 | { | |
9997 | char ch; | |
9998 | ||
9999 | if (gfc_match_name (name) != MATCH_YES) | |
10000 | return MATCH_ERROR; | |
10001 | ||
10002 | for (id = 0; id < EXT_ATTR_LAST; id++) | |
10003 | if (strcmp (name, ext_attr_list[id].name) == 0) | |
10004 | break; | |
10005 | ||
10006 | if (id == EXT_ATTR_LAST) | |
10007 | { | |
10008 | gfc_error ("Unknown attribute in !GCC$ ATTRIBUTES statement at %C"); | |
10009 | return MATCH_ERROR; | |
10010 | } | |
10011 | ||
524af0d6 | 10012 | if (!gfc_add_ext_attribute (&attr, (ext_attr_id_t)id, &gfc_current_locus)) |
08a6b8e0 TB |
10013 | return MATCH_ERROR; |
10014 | ||
10015 | gfc_gobble_whitespace (); | |
10016 | ch = gfc_next_ascii_char (); | |
10017 | if (ch == ':') | |
10018 | { | |
10019 | /* This is the successful exit condition for the loop. */ | |
10020 | if (gfc_next_ascii_char () == ':') | |
10021 | break; | |
10022 | } | |
10023 | ||
10024 | if (ch == ',') | |
10025 | continue; | |
10026 | ||
10027 | goto syntax; | |
10028 | } | |
10029 | ||
10030 | if (gfc_match_eos () == MATCH_YES) | |
10031 | goto syntax; | |
10032 | ||
10033 | for(;;) | |
10034 | { | |
10035 | m = gfc_match_name (name); | |
10036 | if (m != MATCH_YES) | |
10037 | return m; | |
10038 | ||
10039 | if (find_special (name, &sym, true)) | |
10040 | return MATCH_ERROR; | |
f5acf0f2 | 10041 | |
08a6b8e0 TB |
10042 | sym->attr.ext_attr |= attr.ext_attr; |
10043 | ||
10044 | if (gfc_match_eos () == MATCH_YES) | |
10045 | break; | |
10046 | ||
10047 | if (gfc_match_char (',') != MATCH_YES) | |
10048 | goto syntax; | |
10049 | } | |
10050 | ||
10051 | return MATCH_YES; | |
10052 | ||
10053 | syntax: | |
10054 | gfc_error ("Syntax error in !GCC$ ATTRIBUTES statement at %C"); | |
10055 | return MATCH_ERROR; | |
10056 | } |