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6de9cd9a | 1 | /* Declaration statement matcher |
818ab71a | 2 | Copyright (C) 2002-2016 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 | |
925 | && (e->symtree->n.sym->ns->seen_implicit_none == 1 | |
926 | || e->symtree->n.sym->ns->parent->seen_implicit_none == 1)) | |
fb42421e SK |
927 | { |
928 | gfc_free_expr (e); | |
929 | goto syntax; | |
930 | } | |
98a819ea | 931 | |
54b96a2d | 932 | if ((e->ref && e->ref->type == REF_ARRAY |
70112e2a | 933 | && e->ref->u.ar.type != AR_ELEMENT) |
8d48826b SK |
934 | || (!e->ref && e->expr_type == EXPR_ARRAY)) |
935 | { | |
936 | gfc_free_expr (e); | |
937 | goto syntax; | |
938 | } | |
939 | ||
940 | gfc_free_expr (e); | |
941 | } | |
98a819ea | 942 | |
cba28dad JD |
943 | return m; |
944 | ||
945 | syntax: | |
8d48826b | 946 | gfc_error ("Scalar INTEGER expression expected at %L", &(*expr)->where); |
cba28dad | 947 | return MATCH_ERROR; |
6de9cd9a DN |
948 | } |
949 | ||
950 | ||
951 | /* A character length is a '*' followed by a literal integer or a | |
952 | char_len_param_value in parenthesis. */ | |
953 | ||
954 | static match | |
62732c30 | 955 | match_char_length (gfc_expr **expr, bool *deferred, bool obsolescent_check) |
6de9cd9a | 956 | { |
5cf54585 | 957 | int length; |
6de9cd9a DN |
958 | match m; |
959 | ||
f5acf0f2 | 960 | *deferred = false; |
6de9cd9a DN |
961 | m = gfc_match_char ('*'); |
962 | if (m != MATCH_YES) | |
963 | return m; | |
964 | ||
5cf54585 | 965 | m = gfc_match_small_literal_int (&length, NULL); |
6de9cd9a DN |
966 | if (m == MATCH_ERROR) |
967 | return m; | |
968 | ||
969 | if (m == MATCH_YES) | |
970 | { | |
62732c30 | 971 | if (obsolescent_check |
524af0d6 | 972 | && !gfc_notify_std (GFC_STD_F95_OBS, "Old-style character length at %C")) |
e2ab8b09 | 973 | return MATCH_ERROR; |
b7e75771 | 974 | *expr = gfc_get_int_expr (gfc_default_integer_kind, NULL, length); |
6de9cd9a DN |
975 | return m; |
976 | } | |
977 | ||
978 | if (gfc_match_char ('(') == MATCH_NO) | |
979 | goto syntax; | |
980 | ||
e69afb29 | 981 | m = char_len_param_value (expr, deferred); |
1c8bcdf7 PT |
982 | if (m != MATCH_YES && gfc_matching_function) |
983 | { | |
984 | gfc_undo_symbols (); | |
985 | m = MATCH_YES; | |
986 | } | |
987 | ||
6de9cd9a DN |
988 | if (m == MATCH_ERROR) |
989 | return m; | |
990 | if (m == MATCH_NO) | |
991 | goto syntax; | |
992 | ||
993 | if (gfc_match_char (')') == MATCH_NO) | |
994 | { | |
995 | gfc_free_expr (*expr); | |
996 | *expr = NULL; | |
997 | goto syntax; | |
998 | } | |
999 | ||
1000 | return MATCH_YES; | |
1001 | ||
1002 | syntax: | |
1003 | gfc_error ("Syntax error in character length specification at %C"); | |
1004 | return MATCH_ERROR; | |
1005 | } | |
1006 | ||
1007 | ||
9e35b386 EE |
1008 | /* Special subroutine for finding a symbol. Check if the name is found |
1009 | in the current name space. If not, and we're compiling a function or | |
1010 | subroutine and the parent compilation unit is an interface, then check | |
1011 | to see if the name we've been given is the name of the interface | |
1012 | (located in another namespace). */ | |
6de9cd9a DN |
1013 | |
1014 | static int | |
08a6b8e0 | 1015 | find_special (const char *name, gfc_symbol **result, bool allow_subroutine) |
6de9cd9a DN |
1016 | { |
1017 | gfc_state_data *s; | |
08a6b8e0 | 1018 | gfc_symtree *st; |
9e35b386 | 1019 | int i; |
6de9cd9a | 1020 | |
08a6b8e0 | 1021 | i = gfc_get_sym_tree (name, NULL, &st, allow_subroutine); |
d51347f9 | 1022 | if (i == 0) |
08a6b8e0 TB |
1023 | { |
1024 | *result = st ? st->n.sym : NULL; | |
1025 | goto end; | |
1026 | } | |
d51347f9 | 1027 | |
6de9cd9a DN |
1028 | if (gfc_current_state () != COMP_SUBROUTINE |
1029 | && gfc_current_state () != COMP_FUNCTION) | |
9e35b386 | 1030 | goto end; |
6de9cd9a DN |
1031 | |
1032 | s = gfc_state_stack->previous; | |
1033 | if (s == NULL) | |
9e35b386 | 1034 | goto end; |
6de9cd9a DN |
1035 | |
1036 | if (s->state != COMP_INTERFACE) | |
9e35b386 | 1037 | goto end; |
6de9cd9a | 1038 | if (s->sym == NULL) |
66e4ab31 | 1039 | goto end; /* Nameless interface. */ |
6de9cd9a DN |
1040 | |
1041 | if (strcmp (name, s->sym->name) == 0) | |
1042 | { | |
1043 | *result = s->sym; | |
1044 | return 0; | |
1045 | } | |
1046 | ||
9e35b386 EE |
1047 | end: |
1048 | return i; | |
6de9cd9a DN |
1049 | } |
1050 | ||
1051 | ||
1052 | /* Special subroutine for getting a symbol node associated with a | |
1053 | procedure name, used in SUBROUTINE and FUNCTION statements. The | |
1054 | symbol is created in the parent using with symtree node in the | |
1055 | child unit pointing to the symbol. If the current namespace has no | |
1056 | parent, then the symbol is just created in the current unit. */ | |
1057 | ||
1058 | static int | |
636dff67 | 1059 | get_proc_name (const char *name, gfc_symbol **result, bool module_fcn_entry) |
6de9cd9a DN |
1060 | { |
1061 | gfc_symtree *st; | |
1062 | gfc_symbol *sym; | |
a7ca4d8d | 1063 | int rc = 0; |
6de9cd9a | 1064 | |
1a492601 PT |
1065 | /* Module functions have to be left in their own namespace because |
1066 | they have potentially (almost certainly!) already been referenced. | |
1067 | In this sense, they are rather like external functions. This is | |
1068 | fixed up in resolve.c(resolve_entries), where the symbol name- | |
1069 | space is set to point to the master function, so that the fake | |
1070 | result mechanism can work. */ | |
1071 | if (module_fcn_entry) | |
6c12686b PT |
1072 | { |
1073 | /* Present if entry is declared to be a module procedure. */ | |
1074 | rc = gfc_find_symbol (name, gfc_current_ns->parent, 0, result); | |
aa84a9a5 | 1075 | |
6c12686b PT |
1076 | if (*result == NULL) |
1077 | rc = gfc_get_symbol (name, NULL, result); | |
2e32a71e | 1078 | else if (!gfc_get_symbol (name, NULL, &sym) && sym |
aa84a9a5 PT |
1079 | && (*result)->ts.type == BT_UNKNOWN |
1080 | && sym->attr.flavor == FL_UNKNOWN) | |
1081 | /* Pick up the typespec for the entry, if declared in the function | |
1082 | body. Note that this symbol is FL_UNKNOWN because it will | |
1083 | only have appeared in a type declaration. The local symtree | |
1084 | is set to point to the module symbol and a unique symtree | |
1085 | to the local version. This latter ensures a correct clearing | |
1086 | of the symbols. */ | |
2e32a71e PT |
1087 | { |
1088 | /* If the ENTRY proceeds its specification, we need to ensure | |
1089 | that this does not raise a "has no IMPLICIT type" error. */ | |
1090 | if (sym->ts.type == BT_UNKNOWN) | |
0e5a218b | 1091 | sym->attr.untyped = 1; |
2e32a71e | 1092 | |
0e5a218b | 1093 | (*result)->ts = sym->ts; |
2e32a71e PT |
1094 | |
1095 | /* Put the symbol in the procedure namespace so that, should | |
df2fba9e | 1096 | the ENTRY precede its specification, the specification |
2e32a71e PT |
1097 | can be applied. */ |
1098 | (*result)->ns = gfc_current_ns; | |
1099 | ||
1100 | gfc_find_sym_tree (name, gfc_current_ns, 0, &st); | |
1101 | st->n.sym = *result; | |
1102 | st = gfc_get_unique_symtree (gfc_current_ns); | |
2050626a | 1103 | sym->refs++; |
2e32a71e PT |
1104 | st->n.sym = sym; |
1105 | } | |
6c12686b | 1106 | } |
68ea355b PT |
1107 | else |
1108 | rc = gfc_get_symbol (name, gfc_current_ns->parent, result); | |
6de9cd9a | 1109 | |
a7ca4d8d PT |
1110 | if (rc) |
1111 | return rc; | |
1112 | ||
68ea355b | 1113 | sym = *result; |
79124116 PT |
1114 | if (sym->attr.proc == PROC_ST_FUNCTION) |
1115 | return rc; | |
6de9cd9a | 1116 | |
4668d6f9 PT |
1117 | if (sym->attr.module_procedure |
1118 | && sym->attr.if_source == IFSRC_IFBODY) | |
1119 | { | |
1120 | /* Create a partially populated interface symbol to carry the | |
1121 | characteristics of the procedure and the result. */ | |
1122 | sym->ts.interface = gfc_new_symbol (name, sym->ns); | |
1123 | gfc_add_type (sym->ts.interface, &(sym->ts), | |
1124 | &gfc_current_locus); | |
1125 | gfc_copy_attr (&sym->ts.interface->attr, &sym->attr, NULL); | |
1126 | if (sym->attr.dimension) | |
1127 | sym->ts.interface->as = gfc_copy_array_spec (sym->as); | |
1128 | ||
1129 | /* Ideally, at this point, a copy would be made of the formal | |
1130 | arguments and their namespace. However, this does not appear | |
1131 | to be necessary, albeit at the expense of not being able to | |
1132 | use gfc_compare_interfaces directly. */ | |
1133 | ||
1134 | if (sym->result && sym->result != sym) | |
1135 | { | |
1136 | sym->ts.interface->result = sym->result; | |
1137 | sym->result = NULL; | |
1138 | } | |
1139 | else if (sym->result) | |
1140 | { | |
1141 | sym->ts.interface->result = sym->ts.interface; | |
1142 | } | |
1143 | } | |
1144 | else if (sym && !sym->gfc_new | |
1145 | && gfc_current_state () != COMP_INTERFACE) | |
68ea355b | 1146 | { |
cda7004b PT |
1147 | /* Trap another encompassed procedure with the same name. All |
1148 | these conditions are necessary to avoid picking up an entry | |
1149 | whose name clashes with that of the encompassing procedure; | |
2050626a | 1150 | this is handled using gsymbols to register unique, globally |
cda7004b | 1151 | accessible names. */ |
68ea355b | 1152 | if (sym->attr.flavor != 0 |
636dff67 SK |
1153 | && sym->attr.proc != 0 |
1154 | && (sym->attr.subroutine || sym->attr.function) | |
1155 | && sym->attr.if_source != IFSRC_UNKNOWN) | |
fea70c99 MLI |
1156 | gfc_error_now ("Procedure %qs at %C is already defined at %L", |
1157 | name, &sym->declared_at); | |
68ea355b | 1158 | |
fd3e70af JD |
1159 | /* Trap a procedure with a name the same as interface in the |
1160 | encompassing scope. */ | |
1161 | if (sym->attr.generic != 0 | |
2305fa31 JD |
1162 | && (sym->attr.subroutine || sym->attr.function) |
1163 | && !sym->attr.mod_proc) | |
fea70c99 MLI |
1164 | gfc_error_now ("Name %qs at %C is already defined" |
1165 | " as a generic interface at %L", | |
1166 | name, &sym->declared_at); | |
fd3e70af | 1167 | |
68ea355b PT |
1168 | /* Trap declarations of attributes in encompassing scope. The |
1169 | signature for this is that ts.kind is set. Legitimate | |
1170 | references only set ts.type. */ | |
1171 | if (sym->ts.kind != 0 | |
636dff67 SK |
1172 | && !sym->attr.implicit_type |
1173 | && sym->attr.proc == 0 | |
1174 | && gfc_current_ns->parent != NULL | |
1175 | && sym->attr.access == 0 | |
1176 | && !module_fcn_entry) | |
fea70c99 MLI |
1177 | gfc_error_now ("Procedure %qs at %C has an explicit interface " |
1178 | "and must not have attributes declared at %L", | |
1179 | name, &sym->declared_at); | |
68ea355b PT |
1180 | } |
1181 | ||
1182 | if (gfc_current_ns->parent == NULL || *result == NULL) | |
1183 | return rc; | |
6de9cd9a | 1184 | |
1a492601 PT |
1185 | /* Module function entries will already have a symtree in |
1186 | the current namespace but will need one at module level. */ | |
1187 | if (module_fcn_entry) | |
6c12686b PT |
1188 | { |
1189 | /* Present if entry is declared to be a module procedure. */ | |
1190 | rc = gfc_find_sym_tree (name, gfc_current_ns->parent, 0, &st); | |
1191 | if (st == NULL) | |
1192 | st = gfc_new_symtree (&gfc_current_ns->parent->sym_root, name); | |
1193 | } | |
1a492601 PT |
1194 | else |
1195 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); | |
6de9cd9a | 1196 | |
6de9cd9a DN |
1197 | st->n.sym = sym; |
1198 | sym->refs++; | |
1199 | ||
66e4ab31 | 1200 | /* See if the procedure should be a module procedure. */ |
6de9cd9a | 1201 | |
1a492601 | 1202 | if (((sym->ns->proc_name != NULL |
6c12686b PT |
1203 | && sym->ns->proc_name->attr.flavor == FL_MODULE |
1204 | && sym->attr.proc != PROC_MODULE) | |
1205 | || (module_fcn_entry && sym->attr.proc != PROC_MODULE)) | |
524af0d6 | 1206 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
6de9cd9a DN |
1207 | rc = 2; |
1208 | ||
1209 | return rc; | |
1210 | } | |
1211 | ||
1212 | ||
a8b3b0b6 CR |
1213 | /* Verify that the given symbol representing a parameter is C |
1214 | interoperable, by checking to see if it was marked as such after | |
1215 | its declaration. If the given symbol is not interoperable, a | |
1216 | warning is reported, thus removing the need to return the status to | |
1217 | the calling function. The standard does not require the user use | |
1218 | one of the iso_c_binding named constants to declare an | |
1219 | interoperable parameter, but we can't be sure if the param is C | |
1220 | interop or not if the user doesn't. For example, integer(4) may be | |
1221 | legal Fortran, but doesn't have meaning in C. It may interop with | |
1222 | a number of the C types, which causes a problem because the | |
1223 | compiler can't know which one. This code is almost certainly not | |
1224 | portable, and the user will get what they deserve if the C type | |
1225 | across platforms isn't always interoperable with integer(4). If | |
1226 | the user had used something like integer(c_int) or integer(c_long), | |
1227 | the compiler could have automatically handled the varying sizes | |
1228 | across platforms. */ | |
1229 | ||
524af0d6 | 1230 | bool |
00820a2a | 1231 | gfc_verify_c_interop_param (gfc_symbol *sym) |
a8b3b0b6 CR |
1232 | { |
1233 | int is_c_interop = 0; | |
524af0d6 | 1234 | bool retval = true; |
a8b3b0b6 CR |
1235 | |
1236 | /* We check implicitly typed variables in symbol.c:gfc_set_default_type(). | |
1237 | Don't repeat the checks here. */ | |
1238 | if (sym->attr.implicit_type) | |
524af0d6 | 1239 | return true; |
f5acf0f2 | 1240 | |
a8b3b0b6 CR |
1241 | /* For subroutines or functions that are passed to a BIND(C) procedure, |
1242 | they're interoperable if they're BIND(C) and their params are all | |
1243 | interoperable. */ | |
1244 | if (sym->attr.flavor == FL_PROCEDURE) | |
1245 | { | |
1246 | if (sym->attr.is_bind_c == 0) | |
1247 | { | |
4daa149b TB |
1248 | gfc_error_now ("Procedure %qs at %L must have the BIND(C) " |
1249 | "attribute to be C interoperable", sym->name, | |
1250 | &(sym->declared_at)); | |
524af0d6 | 1251 | return false; |
a8b3b0b6 CR |
1252 | } |
1253 | else | |
1254 | { | |
1255 | if (sym->attr.is_c_interop == 1) | |
1256 | /* We've already checked this procedure; don't check it again. */ | |
524af0d6 | 1257 | return true; |
a8b3b0b6 CR |
1258 | else |
1259 | return verify_bind_c_sym (sym, &(sym->ts), sym->attr.in_common, | |
1260 | sym->common_block); | |
1261 | } | |
1262 | } | |
f5acf0f2 | 1263 | |
a8b3b0b6 CR |
1264 | /* See if we've stored a reference to a procedure that owns sym. */ |
1265 | if (sym->ns != NULL && sym->ns->proc_name != NULL) | |
1266 | { | |
1267 | if (sym->ns->proc_name->attr.is_bind_c == 1) | |
1268 | { | |
524af0d6 | 1269 | is_c_interop = (gfc_verify_c_interop(&(sym->ts)) ? 1 : 0); |
a8b3b0b6 CR |
1270 | |
1271 | if (is_c_interop != 1) | |
1272 | { | |
1273 | /* Make personalized messages to give better feedback. */ | |
1274 | if (sym->ts.type == BT_DERIVED) | |
c4100eae MLI |
1275 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1276 | "BIND(C) procedure %qs but is not C interoperable " | |
1277 | "because derived type %qs is not C interoperable", | |
a8b3b0b6 | 1278 | sym->name, &(sym->declared_at), |
f5acf0f2 | 1279 | sym->ns->proc_name->name, |
bc21d315 | 1280 | sym->ts.u.derived->name); |
00820a2a | 1281 | else if (sym->ts.type == BT_CLASS) |
c4100eae MLI |
1282 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1283 | "BIND(C) procedure %qs but is not C interoperable " | |
00820a2a JW |
1284 | "because it is polymorphic", |
1285 | sym->name, &(sym->declared_at), | |
1286 | sym->ns->proc_name->name); | |
4daa149b | 1287 | else if (warn_c_binding_type) |
48749dbc MLI |
1288 | gfc_warning (OPT_Wc_binding_type, |
1289 | "Variable %qs at %L is a dummy argument of the " | |
1290 | "BIND(C) procedure %qs but may not be C " | |
a8b3b0b6 CR |
1291 | "interoperable", |
1292 | sym->name, &(sym->declared_at), | |
1293 | sym->ns->proc_name->name); | |
1294 | } | |
aa5e22f0 CR |
1295 | |
1296 | /* Character strings are only C interoperable if they have a | |
1297 | length of 1. */ | |
1298 | if (sym->ts.type == BT_CHARACTER) | |
1299 | { | |
bc21d315 | 1300 | gfc_charlen *cl = sym->ts.u.cl; |
aa5e22f0 CR |
1301 | if (!cl || !cl->length || cl->length->expr_type != EXPR_CONSTANT |
1302 | || mpz_cmp_si (cl->length->value.integer, 1) != 0) | |
1303 | { | |
c4100eae | 1304 | gfc_error ("Character argument %qs at %L " |
aa5e22f0 | 1305 | "must be length 1 because " |
c4100eae | 1306 | "procedure %qs is BIND(C)", |
aa5e22f0 CR |
1307 | sym->name, &sym->declared_at, |
1308 | sym->ns->proc_name->name); | |
524af0d6 | 1309 | retval = false; |
aa5e22f0 CR |
1310 | } |
1311 | } | |
1312 | ||
a8b3b0b6 CR |
1313 | /* We have to make sure that any param to a bind(c) routine does |
1314 | not have the allocatable, pointer, or optional attributes, | |
1315 | according to J3/04-007, section 5.1. */ | |
60f6ca95 | 1316 | if (sym->attr.allocatable == 1 |
a4d9b221 TB |
1317 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable %qs at %L with " |
1318 | "ALLOCATABLE attribute in procedure %qs " | |
60f6ca95 TB |
1319 | "with BIND(C)", sym->name, |
1320 | &(sym->declared_at), | |
1321 | sym->ns->proc_name->name)) | |
1322 | retval = false; | |
1323 | ||
1324 | if (sym->attr.pointer == 1 | |
a4d9b221 TB |
1325 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable %qs at %L with " |
1326 | "POINTER attribute in procedure %qs " | |
60f6ca95 TB |
1327 | "with BIND(C)", sym->name, |
1328 | &(sym->declared_at), | |
1329 | sym->ns->proc_name->name)) | |
1330 | retval = false; | |
1331 | ||
1332 | if ((sym->attr.allocatable || sym->attr.pointer) && !sym->as) | |
a8b3b0b6 | 1333 | { |
c4100eae MLI |
1334 | gfc_error ("Scalar variable %qs at %L with POINTER or " |
1335 | "ALLOCATABLE in procedure %qs with BIND(C) is not yet" | |
60f6ca95 | 1336 | " supported", sym->name, &(sym->declared_at), |
a8b3b0b6 | 1337 | sym->ns->proc_name->name); |
524af0d6 | 1338 | retval = false; |
a8b3b0b6 CR |
1339 | } |
1340 | ||
2e8d9212 | 1341 | if (sym->attr.optional == 1 && sym->attr.value) |
a8b3b0b6 | 1342 | { |
c4100eae MLI |
1343 | gfc_error ("Variable %qs at %L cannot have both the OPTIONAL " |
1344 | "and the VALUE attribute because procedure %qs " | |
2e8d9212 | 1345 | "is BIND(C)", sym->name, &(sym->declared_at), |
a8b3b0b6 | 1346 | sym->ns->proc_name->name); |
524af0d6 | 1347 | retval = false; |
a8b3b0b6 | 1348 | } |
2e8d9212 | 1349 | else if (sym->attr.optional == 1 |
a4d9b221 | 1350 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable %qs " |
524af0d6 | 1351 | "at %L with OPTIONAL attribute in " |
70112e2a PT |
1352 | "procedure %qs which is BIND(C)", |
1353 | sym->name, &(sym->declared_at), | |
524af0d6 JB |
1354 | sym->ns->proc_name->name)) |
1355 | retval = false; | |
a8b3b0b6 CR |
1356 | |
1357 | /* Make sure that if it has the dimension attribute, that it is | |
95d47b8d TB |
1358 | either assumed size or explicit shape. Deferred shape is already |
1359 | covered by the pointer/allocatable attribute. */ | |
1360 | if (sym->as != NULL && sym->as->type == AS_ASSUMED_SHAPE | |
2a2703a2 | 1361 | && !gfc_notify_std (GFC_STD_F2008_TS, "Assumed-shape array %qs " |
524af0d6 | 1362 | "at %L as dummy argument to the BIND(C) " |
811582ec | 1363 | "procedure %qs at %L", sym->name, |
70112e2a PT |
1364 | &(sym->declared_at), |
1365 | sym->ns->proc_name->name, | |
524af0d6 JB |
1366 | &(sym->ns->proc_name->declared_at))) |
1367 | retval = false; | |
a8b3b0b6 CR |
1368 | } |
1369 | } | |
1370 | ||
1371 | return retval; | |
1372 | } | |
1373 | ||
1374 | ||
cf2b3c22 | 1375 | |
a8b3b0b6 | 1376 | /* Function called by variable_decl() that adds a name to the symbol table. */ |
6de9cd9a | 1377 | |
524af0d6 | 1378 | static bool |
e69afb29 | 1379 | build_sym (const char *name, gfc_charlen *cl, bool cl_deferred, |
636dff67 | 1380 | gfc_array_spec **as, locus *var_locus) |
6de9cd9a DN |
1381 | { |
1382 | symbol_attribute attr; | |
1383 | gfc_symbol *sym; | |
1e6025b6 | 1384 | int upper; |
6de9cd9a | 1385 | |
9e35b386 | 1386 | if (gfc_get_symbol (name, NULL, &sym)) |
524af0d6 | 1387 | return false; |
6de9cd9a | 1388 | |
1e6025b6 TK |
1389 | /* Check if the name has already been defined as a type. The |
1390 | first letter of the symtree will be in upper case then. Of | |
1391 | course, this is only necessary if the upper case letter is | |
1392 | actually different. */ | |
1393 | ||
1394 | upper = TOUPPER(name[0]); | |
1395 | if (upper != name[0]) | |
1396 | { | |
1397 | char u_name[GFC_MAX_SYMBOL_LEN + 1]; | |
1398 | gfc_symtree *st; | |
1399 | int nlen; | |
1400 | ||
1401 | nlen = strlen(name); | |
1402 | gcc_assert (nlen <= GFC_MAX_SYMBOL_LEN); | |
1403 | strncpy (u_name, name, nlen + 1); | |
1404 | u_name[0] = upper; | |
1405 | ||
1406 | st = gfc_find_symtree (gfc_current_ns->sym_root, u_name); | |
1407 | ||
f6288c24 FR |
1408 | /* STRUCTURE types can alias symbol names */ |
1409 | if (st != 0 && st->n.sym->attr.flavor != FL_STRUCT) | |
1e6025b6 TK |
1410 | { |
1411 | gfc_error ("Symbol %qs at %C also declared as a type at %L", name, | |
1412 | &st->n.sym->declared_at); | |
1413 | return false; | |
1414 | } | |
1415 | } | |
1416 | ||
66e4ab31 | 1417 | /* Start updating the symbol table. Add basic type attribute if present. */ |
6de9cd9a | 1418 | if (current_ts.type != BT_UNKNOWN |
636dff67 SK |
1419 | && (sym->attr.implicit_type == 0 |
1420 | || !gfc_compare_types (&sym->ts, ¤t_ts)) | |
524af0d6 JB |
1421 | && !gfc_add_type (sym, ¤t_ts, var_locus)) |
1422 | return false; | |
6de9cd9a DN |
1423 | |
1424 | if (sym->ts.type == BT_CHARACTER) | |
e69afb29 SK |
1425 | { |
1426 | sym->ts.u.cl = cl; | |
1427 | sym->ts.deferred = cl_deferred; | |
1428 | } | |
6de9cd9a DN |
1429 | |
1430 | /* Add dimension attribute if present. */ | |
524af0d6 JB |
1431 | if (!gfc_set_array_spec (sym, *as, var_locus)) |
1432 | return false; | |
6de9cd9a DN |
1433 | *as = NULL; |
1434 | ||
1435 | /* Add attribute to symbol. The copy is so that we can reset the | |
1436 | dimension attribute. */ | |
1437 | attr = current_attr; | |
1438 | attr.dimension = 0; | |
be59db2d | 1439 | attr.codimension = 0; |
6de9cd9a | 1440 | |
524af0d6 JB |
1441 | if (!gfc_copy_attr (&sym->attr, &attr, var_locus)) |
1442 | return false; | |
6de9cd9a | 1443 | |
a8b3b0b6 CR |
1444 | /* Finish any work that may need to be done for the binding label, |
1445 | if it's a bind(c). The bind(c) attr is found before the symbol | |
1446 | is made, and before the symbol name (for data decls), so the | |
1447 | current_ts is holding the binding label, or nothing if the | |
1448 | name= attr wasn't given. Therefore, test here if we're dealing | |
1449 | with a bind(c) and make sure the binding label is set correctly. */ | |
1450 | if (sym->attr.is_bind_c == 1) | |
1451 | { | |
62603fae | 1452 | if (!sym->binding_label) |
a8b3b0b6 | 1453 | { |
ad4a2f64 TB |
1454 | /* Set the binding label and verify that if a NAME= was specified |
1455 | then only one identifier was in the entity-decl-list. */ | |
70112e2a | 1456 | if (!set_binding_label (&sym->binding_label, sym->name, |
524af0d6 JB |
1457 | num_idents_on_line)) |
1458 | return false; | |
a8b3b0b6 CR |
1459 | } |
1460 | } | |
1461 | ||
1462 | /* See if we know we're in a common block, and if it's a bind(c) | |
1463 | common then we need to make sure we're an interoperable type. */ | |
1464 | if (sym->attr.in_common == 1) | |
1465 | { | |
1466 | /* Test the common block object. */ | |
1467 | if (sym->common_block != NULL && sym->common_block->is_bind_c == 1 | |
1468 | && sym->ts.is_c_interop != 1) | |
1469 | { | |
4daa149b | 1470 | gfc_error_now ("Variable %qs in common block %qs at %C " |
a8b3b0b6 | 1471 | "must be declared with a C interoperable " |
4daa149b | 1472 | "kind since common block %qs is BIND(C)", |
a8b3b0b6 CR |
1473 | sym->name, sym->common_block->name, |
1474 | sym->common_block->name); | |
1475 | gfc_clear_error (); | |
1476 | } | |
1477 | } | |
1478 | ||
9a3db5a3 PT |
1479 | sym->attr.implied_index = 0; |
1480 | ||
528622fd | 1481 | if (sym->ts.type == BT_CLASS) |
9b6da3c7 | 1482 | return gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as); |
cf2b3c22 | 1483 | |
524af0d6 | 1484 | return true; |
6de9cd9a DN |
1485 | } |
1486 | ||
636dff67 | 1487 | |
df7cc9b5 | 1488 | /* Set character constant to the given length. The constant will be padded or |
d2848082 DK |
1489 | truncated. If we're inside an array constructor without a typespec, we |
1490 | additionally check that all elements have the same length; check_len -1 | |
1491 | means no checking. */ | |
df7cc9b5 FW |
1492 | |
1493 | void | |
d2848082 | 1494 | gfc_set_constant_character_len (int len, gfc_expr *expr, int check_len) |
df7cc9b5 | 1495 | { |
00660189 | 1496 | gfc_char_t *s; |
df7cc9b5 FW |
1497 | int slen; |
1498 | ||
834e9dbb SK |
1499 | if (expr->ts.type != BT_CHARACTER) |
1500 | return; | |
b441ae1d SK |
1501 | |
1502 | if (expr->expr_type != EXPR_CONSTANT) | |
1503 | { | |
1504 | gfc_error_now ("CHARACTER length must be a constant at %L", &expr->where); | |
1505 | return; | |
1506 | } | |
df7cc9b5 FW |
1507 | |
1508 | slen = expr->value.character.length; | |
1509 | if (len != slen) | |
1510 | { | |
00660189 FXC |
1511 | s = gfc_get_wide_string (len + 1); |
1512 | memcpy (s, expr->value.character.string, | |
1513 | MIN (len, slen) * sizeof (gfc_char_t)); | |
df7cc9b5 | 1514 | if (len > slen) |
00660189 | 1515 | gfc_wide_memset (&s[slen], ' ', len - slen); |
2220652d | 1516 | |
a96c39ea | 1517 | if (warn_character_truncation && slen > len) |
4daa149b TB |
1518 | gfc_warning_now (OPT_Wcharacter_truncation, |
1519 | "CHARACTER expression at %L is being truncated " | |
1520 | "(%d/%d)", &expr->where, slen, len); | |
2220652d PT |
1521 | |
1522 | /* Apply the standard by 'hand' otherwise it gets cleared for | |
1523 | initializers. */ | |
d2848082 DK |
1524 | if (check_len != -1 && slen != check_len |
1525 | && !(gfc_option.allow_std & GFC_STD_GNU)) | |
2220652d PT |
1526 | gfc_error_now ("The CHARACTER elements of the array constructor " |
1527 | "at %L must have the same length (%d/%d)", | |
d2848082 | 1528 | &expr->where, slen, check_len); |
2220652d | 1529 | |
150675a8 | 1530 | s[len] = '\0'; |
cede9502 | 1531 | free (expr->value.character.string); |
df7cc9b5 FW |
1532 | expr->value.character.string = s; |
1533 | expr->value.character.length = len; | |
1534 | } | |
1535 | } | |
6de9cd9a | 1536 | |
25d8f0a2 | 1537 | |
d51347f9 | 1538 | /* Function to create and update the enumerator history |
25d8f0a2 | 1539 | using the information passed as arguments. |
d51347f9 TB |
1540 | Pointer "max_enum" is also updated, to point to |
1541 | enum history node containing largest initializer. | |
25d8f0a2 TS |
1542 | |
1543 | SYM points to the symbol node of enumerator. | |
66e4ab31 | 1544 | INIT points to its enumerator value. */ |
25d8f0a2 | 1545 | |
d51347f9 | 1546 | static void |
636dff67 | 1547 | create_enum_history (gfc_symbol *sym, gfc_expr *init) |
25d8f0a2 TS |
1548 | { |
1549 | enumerator_history *new_enum_history; | |
1550 | gcc_assert (sym != NULL && init != NULL); | |
1551 | ||
ece3f663 | 1552 | new_enum_history = XCNEW (enumerator_history); |
25d8f0a2 TS |
1553 | |
1554 | new_enum_history->sym = sym; | |
1555 | new_enum_history->initializer = init; | |
1556 | new_enum_history->next = NULL; | |
1557 | ||
1558 | if (enum_history == NULL) | |
1559 | { | |
1560 | enum_history = new_enum_history; | |
1561 | max_enum = enum_history; | |
1562 | } | |
1563 | else | |
1564 | { | |
1565 | new_enum_history->next = enum_history; | |
1566 | enum_history = new_enum_history; | |
1567 | ||
d51347f9 | 1568 | if (mpz_cmp (max_enum->initializer->value.integer, |
25d8f0a2 | 1569 | new_enum_history->initializer->value.integer) < 0) |
636dff67 | 1570 | max_enum = new_enum_history; |
25d8f0a2 TS |
1571 | } |
1572 | } | |
1573 | ||
1574 | ||
d51347f9 | 1575 | /* Function to free enum kind history. */ |
25d8f0a2 | 1576 | |
d51347f9 | 1577 | void |
636dff67 | 1578 | gfc_free_enum_history (void) |
25d8f0a2 | 1579 | { |
d51347f9 TB |
1580 | enumerator_history *current = enum_history; |
1581 | enumerator_history *next; | |
25d8f0a2 TS |
1582 | |
1583 | while (current != NULL) | |
1584 | { | |
1585 | next = current->next; | |
cede9502 | 1586 | free (current); |
25d8f0a2 TS |
1587 | current = next; |
1588 | } | |
1589 | max_enum = NULL; | |
1590 | enum_history = NULL; | |
1591 | } | |
1592 | ||
1593 | ||
6de9cd9a DN |
1594 | /* Function called by variable_decl() that adds an initialization |
1595 | expression to a symbol. */ | |
1596 | ||
524af0d6 | 1597 | static bool |
66e4ab31 | 1598 | add_init_expr_to_sym (const char *name, gfc_expr **initp, locus *var_locus) |
6de9cd9a DN |
1599 | { |
1600 | symbol_attribute attr; | |
1601 | gfc_symbol *sym; | |
1602 | gfc_expr *init; | |
1603 | ||
1604 | init = *initp; | |
08a6b8e0 | 1605 | if (find_special (name, &sym, false)) |
524af0d6 | 1606 | return false; |
6de9cd9a DN |
1607 | |
1608 | attr = sym->attr; | |
1609 | ||
1610 | /* If this symbol is confirming an implicit parameter type, | |
1611 | then an initialization expression is not allowed. */ | |
1612 | if (attr.flavor == FL_PARAMETER | |
1613 | && sym->value != NULL | |
1614 | && *initp != NULL) | |
1615 | { | |
c4100eae | 1616 | gfc_error ("Initializer not allowed for PARAMETER %qs at %C", |
6de9cd9a | 1617 | sym->name); |
524af0d6 | 1618 | return false; |
6de9cd9a DN |
1619 | } |
1620 | ||
1621 | if (init == NULL) | |
1622 | { | |
1623 | /* An initializer is required for PARAMETER declarations. */ | |
1624 | if (attr.flavor == FL_PARAMETER) | |
1625 | { | |
1626 | gfc_error ("PARAMETER at %L is missing an initializer", var_locus); | |
524af0d6 | 1627 | return false; |
6de9cd9a DN |
1628 | } |
1629 | } | |
1630 | else | |
1631 | { | |
1632 | /* If a variable appears in a DATA block, it cannot have an | |
1de8a836 | 1633 | initializer. */ |
6de9cd9a DN |
1634 | if (sym->attr.data) |
1635 | { | |
c4100eae | 1636 | gfc_error ("Variable %qs at %C with an initializer already " |
636dff67 | 1637 | "appears in a DATA statement", sym->name); |
524af0d6 | 1638 | return false; |
6de9cd9a DN |
1639 | } |
1640 | ||
75d17889 | 1641 | /* Check if the assignment can happen. This has to be put off |
80f95228 | 1642 | until later for derived type variables and procedure pointers. */ |
f6288c24 | 1643 | if (!gfc_bt_struct (sym->ts.type) && !gfc_bt_struct (init->ts.type) |
cf2b3c22 | 1644 | && sym->ts.type != BT_CLASS && init->ts.type != BT_CLASS |
f5acf0f2 | 1645 | && !sym->attr.proc_pointer |
524af0d6 JB |
1646 | && !gfc_check_assign_symbol (sym, NULL, init)) |
1647 | return false; | |
6de9cd9a | 1648 | |
bc21d315 | 1649 | if (sym->ts.type == BT_CHARACTER && sym->ts.u.cl |
51b128a0 | 1650 | && init->ts.type == BT_CHARACTER) |
df7cc9b5 FW |
1651 | { |
1652 | /* Update symbol character length according initializer. */ | |
524af0d6 JB |
1653 | if (!gfc_check_assign_symbol (sym, NULL, init)) |
1654 | return false; | |
51b128a0 | 1655 | |
bc21d315 | 1656 | if (sym->ts.u.cl->length == NULL) |
df7cc9b5 | 1657 | { |
a99288e5 | 1658 | int clen; |
66e4ab31 SK |
1659 | /* If there are multiple CHARACTER variables declared on the |
1660 | same line, we don't want them to share the same length. */ | |
b76e28c6 | 1661 | sym->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
96f4873b | 1662 | |
a99288e5 PT |
1663 | if (sym->attr.flavor == FL_PARAMETER) |
1664 | { | |
1665 | if (init->expr_type == EXPR_CONSTANT) | |
1666 | { | |
1667 | clen = init->value.character.length; | |
b7e75771 JD |
1668 | sym->ts.u.cl->length |
1669 | = gfc_get_int_expr (gfc_default_integer_kind, | |
1670 | NULL, clen); | |
a99288e5 PT |
1671 | } |
1672 | else if (init->expr_type == EXPR_ARRAY) | |
1673 | { | |
dc0f176a | 1674 | if (init->ts.u.cl) |
39abef62 LK |
1675 | { |
1676 | const gfc_expr *length = init->ts.u.cl->length; | |
1677 | if (length->expr_type != EXPR_CONSTANT) | |
1678 | { | |
1679 | gfc_error ("Cannot initialize parameter array " | |
1680 | "at %L " | |
1681 | "with variable length elements", | |
1682 | &sym->declared_at); | |
1683 | return false; | |
1684 | } | |
1685 | clen = mpz_get_si (length->value.integer); | |
1686 | } | |
dc0f176a SK |
1687 | else if (init->value.constructor) |
1688 | { | |
1689 | gfc_constructor *c; | |
70112e2a | 1690 | c = gfc_constructor_first (init->value.constructor); |
dc0f176a SK |
1691 | clen = c->expr->value.character.length; |
1692 | } | |
1693 | else | |
1694 | gcc_unreachable (); | |
b7e75771 JD |
1695 | sym->ts.u.cl->length |
1696 | = gfc_get_int_expr (gfc_default_integer_kind, | |
1697 | NULL, clen); | |
a99288e5 | 1698 | } |
bc21d315 JW |
1699 | else if (init->ts.u.cl && init->ts.u.cl->length) |
1700 | sym->ts.u.cl->length = | |
1701 | gfc_copy_expr (sym->value->ts.u.cl->length); | |
a99288e5 | 1702 | } |
df7cc9b5 FW |
1703 | } |
1704 | /* Update initializer character length according symbol. */ | |
bc21d315 | 1705 | else if (sym->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
df7cc9b5 | 1706 | { |
d30ecc9c SK |
1707 | int len; |
1708 | ||
1709 | if (!gfc_specification_expr (sym->ts.u.cl->length)) | |
1710 | return false; | |
1711 | ||
1712 | len = mpz_get_si (sym->ts.u.cl->length->value.integer); | |
df7cc9b5 FW |
1713 | |
1714 | if (init->expr_type == EXPR_CONSTANT) | |
d2848082 | 1715 | gfc_set_constant_character_len (len, init, -1); |
df7cc9b5 FW |
1716 | else if (init->expr_type == EXPR_ARRAY) |
1717 | { | |
b7e75771 JD |
1718 | gfc_constructor *c; |
1719 | ||
dcdc7b6c PT |
1720 | /* Build a new charlen to prevent simplification from |
1721 | deleting the length before it is resolved. */ | |
b76e28c6 | 1722 | init->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
bc21d315 | 1723 | init->ts.u.cl->length = gfc_copy_expr (sym->ts.u.cl->length); |
dcdc7b6c | 1724 | |
b7e75771 JD |
1725 | for (c = gfc_constructor_first (init->value.constructor); |
1726 | c; c = gfc_constructor_next (c)) | |
1727 | gfc_set_constant_character_len (len, c->expr, -1); | |
df7cc9b5 FW |
1728 | } |
1729 | } | |
1730 | } | |
1731 | ||
f5ca06e6 DK |
1732 | /* If sym is implied-shape, set its upper bounds from init. */ |
1733 | if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension | |
1734 | && sym->as->type == AS_IMPLIED_SHAPE) | |
1735 | { | |
1736 | int dim; | |
1737 | ||
1738 | if (init->rank == 0) | |
1739 | { | |
1740 | gfc_error ("Can't initialize implied-shape array at %L" | |
1741 | " with scalar", &sym->declared_at); | |
524af0d6 | 1742 | return false; |
f5ca06e6 | 1743 | } |
f5ca06e6 DK |
1744 | |
1745 | /* Shape should be present, we get an initialization expression. */ | |
1746 | gcc_assert (init->shape); | |
1747 | ||
1748 | for (dim = 0; dim < sym->as->rank; ++dim) | |
1749 | { | |
1750 | int k; | |
cdffe788 | 1751 | gfc_expr *e, *lower; |
f5acf0f2 | 1752 | |
f5ca06e6 | 1753 | lower = sym->as->lower[dim]; |
cdffe788 | 1754 | |
70112e2a | 1755 | /* If the lower bound is an array element from another |
cdffe788 SK |
1756 | parameterized array, then it is marked with EXPR_VARIABLE and |
1757 | is an initialization expression. Try to reduce it. */ | |
1758 | if (lower->expr_type == EXPR_VARIABLE) | |
1759 | gfc_reduce_init_expr (lower); | |
1760 | ||
1761 | if (lower->expr_type == EXPR_CONSTANT) | |
1762 | { | |
1763 | /* All dimensions must be without upper bound. */ | |
1764 | gcc_assert (!sym->as->upper[dim]); | |
1765 | ||
1766 | k = lower->ts.kind; | |
1767 | e = gfc_get_constant_expr (BT_INTEGER, k, &sym->declared_at); | |
1768 | mpz_add (e->value.integer, lower->value.integer, | |
1769 | init->shape[dim]); | |
1770 | mpz_sub_ui (e->value.integer, e->value.integer, 1); | |
1771 | sym->as->upper[dim] = e; | |
1772 | } | |
1773 | else | |
f5ca06e6 DK |
1774 | { |
1775 | gfc_error ("Non-constant lower bound in implied-shape" | |
1776 | " declaration at %L", &lower->where); | |
524af0d6 | 1777 | return false; |
f5ca06e6 | 1778 | } |
f5ca06e6 DK |
1779 | } |
1780 | ||
1781 | sym->as->type = AS_EXPLICIT; | |
1782 | } | |
1783 | ||
a8b3b0b6 CR |
1784 | /* Need to check if the expression we initialized this |
1785 | to was one of the iso_c_binding named constants. If so, | |
1786 | and we're a parameter (constant), let it be iso_c. | |
1787 | For example: | |
1788 | integer(c_int), parameter :: my_int = c_int | |
1789 | integer(my_int) :: my_int_2 | |
1790 | If we mark my_int as iso_c (since we can see it's value | |
1791 | is equal to one of the named constants), then my_int_2 | |
1792 | will be considered C interoperable. */ | |
f6288c24 | 1793 | if (sym->ts.type != BT_CHARACTER && !gfc_bt_struct (sym->ts.type)) |
a8b3b0b6 CR |
1794 | { |
1795 | sym->ts.is_iso_c |= init->ts.is_iso_c; | |
1796 | sym->ts.is_c_interop |= init->ts.is_c_interop; | |
1797 | /* attr bits needed for module files. */ | |
1798 | sym->attr.is_iso_c |= init->ts.is_iso_c; | |
1799 | sym->attr.is_c_interop |= init->ts.is_c_interop; | |
1800 | if (init->ts.is_iso_c) | |
1801 | sym->ts.f90_type = init->ts.f90_type; | |
1802 | } | |
b7e75771 | 1803 | |
6de9cd9a DN |
1804 | /* Add initializer. Make sure we keep the ranks sane. */ |
1805 | if (sym->attr.dimension && init->rank == 0) | |
a9b43781 PT |
1806 | { |
1807 | mpz_t size; | |
1808 | gfc_expr *array; | |
a9b43781 PT |
1809 | int n; |
1810 | if (sym->attr.flavor == FL_PARAMETER | |
1811 | && init->expr_type == EXPR_CONSTANT | |
524af0d6 | 1812 | && spec_size (sym->as, &size) |
a9b43781 PT |
1813 | && mpz_cmp_si (size, 0) > 0) |
1814 | { | |
b7e75771 JD |
1815 | array = gfc_get_array_expr (init->ts.type, init->ts.kind, |
1816 | &init->where); | |
a9b43781 | 1817 | for (n = 0; n < (int)mpz_get_si (size); n++) |
b7e75771 JD |
1818 | gfc_constructor_append_expr (&array->value.constructor, |
1819 | n == 0 | |
1820 | ? init | |
1821 | : gfc_copy_expr (init), | |
1822 | &init->where); | |
f5acf0f2 | 1823 | |
a9b43781 PT |
1824 | array->shape = gfc_get_shape (sym->as->rank); |
1825 | for (n = 0; n < sym->as->rank; n++) | |
1826 | spec_dimen_size (sym->as, n, &array->shape[n]); | |
1827 | ||
1828 | init = array; | |
1829 | mpz_clear (size); | |
1830 | } | |
1831 | init->rank = sym->as->rank; | |
1832 | } | |
6de9cd9a DN |
1833 | |
1834 | sym->value = init; | |
ef7236d2 DF |
1835 | if (sym->attr.save == SAVE_NONE) |
1836 | sym->attr.save = SAVE_IMPLICIT; | |
6de9cd9a DN |
1837 | *initp = NULL; |
1838 | } | |
1839 | ||
524af0d6 | 1840 | return true; |
6de9cd9a DN |
1841 | } |
1842 | ||
1843 | ||
1844 | /* Function called by variable_decl() that adds a name to a structure | |
1845 | being built. */ | |
1846 | ||
524af0d6 | 1847 | static bool |
636dff67 SK |
1848 | build_struct (const char *name, gfc_charlen *cl, gfc_expr **init, |
1849 | gfc_array_spec **as) | |
6de9cd9a | 1850 | { |
f6288c24 | 1851 | gfc_state_data *s; |
6de9cd9a | 1852 | gfc_component *c; |
524af0d6 | 1853 | bool t = true; |
6de9cd9a | 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 | { | |
1861 | gfc_error ("Component at %C must have the POINTER attribute"); | |
524af0d6 | 1862 | return false; |
6de9cd9a DN |
1863 | } |
1864 | ||
636dff67 | 1865 | if (gfc_current_block ()->attr.pointer && (*as)->rank != 0) |
6de9cd9a DN |
1866 | { |
1867 | if ((*as)->type != AS_DEFERRED && (*as)->type != AS_EXPLICIT) | |
1868 | { | |
1869 | gfc_error ("Array component of structure at %C must have explicit " | |
1870 | "or deferred shape"); | |
524af0d6 | 1871 | return false; |
6de9cd9a DN |
1872 | } |
1873 | } | |
1874 | ||
f6288c24 FR |
1875 | /* If we are in a nested union/map definition, gfc_add_component will not |
1876 | properly find repeated components because: | |
6442a6f4 | 1877 | (i) gfc_add_component does a flat search, where components of unions |
f6288c24 FR |
1878 | and maps are implicity chained so nested components may conflict. |
1879 | (ii) Unions and maps are not linked as components of their parent | |
1880 | structures until after they are parsed. | |
1881 | For (i) we use gfc_find_component which searches recursively, and for (ii) | |
1882 | we search each block directly from the parse stack until we find the top | |
1883 | level structure. */ | |
1884 | ||
1885 | s = gfc_state_stack; | |
1886 | if (s->state == COMP_UNION || s->state == COMP_MAP) | |
1887 | { | |
1888 | while (s->state == COMP_UNION || gfc_comp_struct (s->state)) | |
1889 | { | |
1890 | c = gfc_find_component (s->sym, name, true, true, NULL); | |
1891 | if (c != NULL) | |
1892 | { | |
1893 | gfc_error_now ("Component '%s' at %C already declared at %L", | |
1894 | name, &c->loc); | |
1895 | return false; | |
1896 | } | |
1897 | /* Break after we've searched the entire chain. */ | |
1898 | if (s->state == COMP_DERIVED || s->state == COMP_STRUCTURE) | |
1899 | break; | |
1900 | s = s->previous; | |
1901 | } | |
1902 | } | |
1903 | ||
524af0d6 JB |
1904 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
1905 | return false; | |
6de9cd9a DN |
1906 | |
1907 | c->ts = current_ts; | |
bc21d315 JW |
1908 | if (c->ts.type == BT_CHARACTER) |
1909 | c->ts.u.cl = cl; | |
d4b7d0f0 | 1910 | c->attr = current_attr; |
6de9cd9a DN |
1911 | |
1912 | c->initializer = *init; | |
1913 | *init = NULL; | |
1914 | ||
1915 | c->as = *as; | |
1916 | if (c->as != NULL) | |
be59db2d TB |
1917 | { |
1918 | if (c->as->corank) | |
1919 | c->attr.codimension = 1; | |
1920 | if (c->as->rank) | |
1921 | c->attr.dimension = 1; | |
1922 | } | |
6de9cd9a DN |
1923 | *as = NULL; |
1924 | ||
7fc61626 | 1925 | gfc_apply_init (&c->ts, &c->attr, c->initializer); |
28d08315 | 1926 | |
6de9cd9a | 1927 | /* Check array components. */ |
d4b7d0f0 | 1928 | if (!c->attr.dimension) |
2e23972e | 1929 | goto scalar; |
6de9cd9a | 1930 | |
d4b7d0f0 | 1931 | if (c->attr.pointer) |
6de9cd9a DN |
1932 | { |
1933 | if (c->as->type != AS_DEFERRED) | |
1934 | { | |
5046aff5 PT |
1935 | gfc_error ("Pointer array component of structure at %C must have a " |
1936 | "deferred shape"); | |
524af0d6 | 1937 | t = false; |
5046aff5 PT |
1938 | } |
1939 | } | |
d4b7d0f0 | 1940 | else if (c->attr.allocatable) |
5046aff5 PT |
1941 | { |
1942 | if (c->as->type != AS_DEFERRED) | |
1943 | { | |
1944 | gfc_error ("Allocatable component of structure at %C must have a " | |
1945 | "deferred shape"); | |
524af0d6 | 1946 | t = false; |
6de9cd9a DN |
1947 | } |
1948 | } | |
1949 | else | |
1950 | { | |
1951 | if (c->as->type != AS_EXPLICIT) | |
1952 | { | |
636dff67 SK |
1953 | gfc_error ("Array component of structure at %C must have an " |
1954 | "explicit shape"); | |
524af0d6 | 1955 | t = false; |
6de9cd9a DN |
1956 | } |
1957 | } | |
1958 | ||
2e23972e JW |
1959 | scalar: |
1960 | if (c->ts.type == BT_CLASS) | |
17643884 | 1961 | { |
9b6da3c7 | 1962 | bool t2 = gfc_build_class_symbol (&c->ts, &c->attr, &c->as); |
ea59b186 | 1963 | |
524af0d6 | 1964 | if (t) |
ea59b186 | 1965 | t = t2; |
17643884 JW |
1966 | } |
1967 | ||
2e23972e | 1968 | return t; |
6de9cd9a DN |
1969 | } |
1970 | ||
1971 | ||
1972 | /* Match a 'NULL()', and possibly take care of some side effects. */ | |
1973 | ||
1974 | match | |
636dff67 | 1975 | gfc_match_null (gfc_expr **result) |
6de9cd9a DN |
1976 | { |
1977 | gfc_symbol *sym; | |
576f6da6 | 1978 | match m, m2 = MATCH_NO; |
6de9cd9a | 1979 | |
576f6da6 TB |
1980 | if ((m = gfc_match (" null ( )")) == MATCH_ERROR) |
1981 | return MATCH_ERROR; | |
1982 | ||
1983 | if (m == MATCH_NO) | |
1984 | { | |
1985 | locus old_loc; | |
1986 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
1987 | ||
94241120 | 1988 | if ((m2 = gfc_match (" null (")) != MATCH_YES) |
576f6da6 TB |
1989 | return m2; |
1990 | ||
1991 | old_loc = gfc_current_locus; | |
1992 | if ((m2 = gfc_match (" %n ) ", name)) == MATCH_ERROR) | |
1993 | return MATCH_ERROR; | |
1994 | if (m2 != MATCH_YES | |
1995 | && ((m2 = gfc_match (" mold = %n )", name)) == MATCH_ERROR)) | |
1996 | return MATCH_ERROR; | |
1997 | if (m2 == MATCH_NO) | |
1998 | { | |
1999 | gfc_current_locus = old_loc; | |
2000 | return MATCH_NO; | |
2001 | } | |
2002 | } | |
6de9cd9a DN |
2003 | |
2004 | /* The NULL symbol now has to be/become an intrinsic function. */ | |
2005 | if (gfc_get_symbol ("null", NULL, &sym)) | |
2006 | { | |
2007 | gfc_error ("NULL() initialization at %C is ambiguous"); | |
2008 | return MATCH_ERROR; | |
2009 | } | |
2010 | ||
2011 | gfc_intrinsic_symbol (sym); | |
2012 | ||
2013 | if (sym->attr.proc != PROC_INTRINSIC | |
07416986 | 2014 | && !(sym->attr.use_assoc && sym->attr.intrinsic) |
524af0d6 JB |
2015 | && (!gfc_add_procedure(&sym->attr, PROC_INTRINSIC, sym->name, NULL) |
2016 | || !gfc_add_function (&sym->attr, sym->name, NULL))) | |
6de9cd9a DN |
2017 | return MATCH_ERROR; |
2018 | ||
b7e75771 | 2019 | *result = gfc_get_null_expr (&gfc_current_locus); |
6de9cd9a | 2020 | |
576f6da6 TB |
2021 | /* Invalid per F2008, C512. */ |
2022 | if (m2 == MATCH_YES) | |
2023 | { | |
2024 | gfc_error ("NULL() initialization at %C may not have MOLD"); | |
2025 | return MATCH_ERROR; | |
2026 | } | |
2027 | ||
6de9cd9a DN |
2028 | return MATCH_YES; |
2029 | } | |
2030 | ||
2031 | ||
80f95228 JW |
2032 | /* Match the initialization expr for a data pointer or procedure pointer. */ |
2033 | ||
2034 | static match | |
2035 | match_pointer_init (gfc_expr **init, int procptr) | |
2036 | { | |
2037 | match m; | |
2038 | ||
f6288c24 | 2039 | if (gfc_pure (NULL) && !gfc_comp_struct (gfc_state_stack->state)) |
80f95228 JW |
2040 | { |
2041 | gfc_error ("Initialization of pointer at %C is not allowed in " | |
2042 | "a PURE procedure"); | |
2043 | return MATCH_ERROR; | |
2044 | } | |
ccd7751b | 2045 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
80f95228 | 2046 | |
eea58adb | 2047 | /* Match NULL() initialization. */ |
80f95228 JW |
2048 | m = gfc_match_null (init); |
2049 | if (m != MATCH_NO) | |
2050 | return m; | |
2051 | ||
2052 | /* Match non-NULL initialization. */ | |
837c4b78 | 2053 | gfc_matching_ptr_assignment = !procptr; |
80f95228 JW |
2054 | gfc_matching_procptr_assignment = procptr; |
2055 | m = gfc_match_rvalue (init); | |
837c4b78 | 2056 | gfc_matching_ptr_assignment = 0; |
80f95228 JW |
2057 | gfc_matching_procptr_assignment = 0; |
2058 | if (m == MATCH_ERROR) | |
2059 | return MATCH_ERROR; | |
2060 | else if (m == MATCH_NO) | |
2061 | { | |
2062 | gfc_error ("Error in pointer initialization at %C"); | |
2063 | return MATCH_ERROR; | |
2064 | } | |
2065 | ||
dc9a54fa JW |
2066 | if (!procptr && !gfc_resolve_expr (*init)) |
2067 | return MATCH_ERROR; | |
f5acf0f2 | 2068 | |
524af0d6 JB |
2069 | if (!gfc_notify_std (GFC_STD_F2008, "non-NULL pointer " |
2070 | "initialization at %C")) | |
80f95228 JW |
2071 | return MATCH_ERROR; |
2072 | ||
2073 | return MATCH_YES; | |
2074 | } | |
2075 | ||
2076 | ||
524af0d6 | 2077 | static bool |
bb9de0c4 JW |
2078 | check_function_name (char *name) |
2079 | { | |
2080 | /* In functions that have a RESULT variable defined, the function name always | |
2081 | refers to function calls. Therefore, the name is not allowed to appear in | |
2082 | specification statements. When checking this, be careful about | |
2083 | 'hidden' procedure pointer results ('ppr@'). */ | |
2084 | ||
2085 | if (gfc_current_state () == COMP_FUNCTION) | |
2086 | { | |
2087 | gfc_symbol *block = gfc_current_block (); | |
2088 | if (block && block->result && block->result != block | |
2089 | && strcmp (block->result->name, "ppr@") != 0 | |
2090 | && strcmp (block->name, name) == 0) | |
2091 | { | |
c4100eae | 2092 | gfc_error ("Function name %qs not allowed at %C", name); |
524af0d6 | 2093 | return false; |
bb9de0c4 JW |
2094 | } |
2095 | } | |
2096 | ||
524af0d6 | 2097 | return true; |
bb9de0c4 JW |
2098 | } |
2099 | ||
2100 | ||
6de9cd9a DN |
2101 | /* Match a variable name with an optional initializer. When this |
2102 | subroutine is called, a variable is expected to be parsed next. | |
2103 | Depending on what is happening at the moment, updates either the | |
2104 | symbol table or the current interface. */ | |
2105 | ||
2106 | static match | |
949d5b72 | 2107 | variable_decl (int elem) |
6de9cd9a DN |
2108 | { |
2109 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
2110 | gfc_expr *initializer, *char_len; | |
2111 | gfc_array_spec *as; | |
83d890b9 | 2112 | gfc_array_spec *cp_as; /* Extra copy for Cray Pointees. */ |
6de9cd9a | 2113 | gfc_charlen *cl; |
e69afb29 | 2114 | bool cl_deferred; |
6de9cd9a DN |
2115 | locus var_locus; |
2116 | match m; | |
524af0d6 | 2117 | bool t; |
83d890b9 | 2118 | gfc_symbol *sym; |
6de9cd9a DN |
2119 | |
2120 | initializer = NULL; | |
2121 | as = NULL; | |
83d890b9 | 2122 | cp_as = NULL; |
6de9cd9a DN |
2123 | |
2124 | /* When we get here, we've just matched a list of attributes and | |
2125 | maybe a type and a double colon. The next thing we expect to see | |
2126 | is the name of the symbol. */ | |
2127 | m = gfc_match_name (name); | |
2128 | if (m != MATCH_YES) | |
2129 | goto cleanup; | |
2130 | ||
63645982 | 2131 | var_locus = gfc_current_locus; |
6de9cd9a DN |
2132 | |
2133 | /* Now we could see the optional array spec. or character length. */ | |
be59db2d | 2134 | m = gfc_match_array_spec (&as, true, true); |
11126dc0 | 2135 | if (m == MATCH_ERROR) |
6de9cd9a | 2136 | goto cleanup; |
25d8f0a2 | 2137 | |
6de9cd9a DN |
2138 | if (m == MATCH_NO) |
2139 | as = gfc_copy_array_spec (current_as); | |
63fbf586 | 2140 | else if (current_as |
524af0d6 | 2141 | && !merge_array_spec (current_as, as, true)) |
63fbf586 TB |
2142 | { |
2143 | m = MATCH_ERROR; | |
2144 | goto cleanup; | |
2145 | } | |
6de9cd9a | 2146 | |
c61819ff | 2147 | if (flag_cray_pointer) |
11126dc0 AL |
2148 | cp_as = gfc_copy_array_spec (as); |
2149 | ||
f5ca06e6 DK |
2150 | /* At this point, we know for sure if the symbol is PARAMETER and can thus |
2151 | determine (and check) whether it can be implied-shape. If it | |
2152 | was parsed as assumed-size, change it because PARAMETERs can not | |
2153 | be assumed-size. */ | |
2154 | if (as) | |
2155 | { | |
2156 | if (as->type == AS_IMPLIED_SHAPE && current_attr.flavor != FL_PARAMETER) | |
2157 | { | |
2158 | m = MATCH_ERROR; | |
c4100eae | 2159 | gfc_error ("Non-PARAMETER symbol %qs at %L can't be implied-shape", |
f5ca06e6 DK |
2160 | name, &var_locus); |
2161 | goto cleanup; | |
2162 | } | |
2163 | ||
2164 | if (as->type == AS_ASSUMED_SIZE && as->rank == 1 | |
2165 | && current_attr.flavor == FL_PARAMETER) | |
2166 | as->type = AS_IMPLIED_SHAPE; | |
2167 | ||
2168 | if (as->type == AS_IMPLIED_SHAPE | |
70112e2a | 2169 | && !gfc_notify_std (GFC_STD_F2008, "Implied-shape array at %L", |
524af0d6 | 2170 | &var_locus)) |
f5ca06e6 DK |
2171 | { |
2172 | m = MATCH_ERROR; | |
2173 | goto cleanup; | |
2174 | } | |
2175 | } | |
2176 | ||
6de9cd9a DN |
2177 | char_len = NULL; |
2178 | cl = NULL; | |
e69afb29 | 2179 | cl_deferred = false; |
6de9cd9a DN |
2180 | |
2181 | if (current_ts.type == BT_CHARACTER) | |
2182 | { | |
2767f2cc | 2183 | switch (match_char_length (&char_len, &cl_deferred, false)) |
6de9cd9a DN |
2184 | { |
2185 | case MATCH_YES: | |
b76e28c6 | 2186 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
2187 | |
2188 | cl->length = char_len; | |
2189 | break; | |
2190 | ||
949d5b72 | 2191 | /* Non-constant lengths need to be copied after the first |
9b21a380 | 2192 | element. Also copy assumed lengths. */ |
6de9cd9a | 2193 | case MATCH_NO: |
9b21a380 | 2194 | if (elem > 1 |
bc21d315 JW |
2195 | && (current_ts.u.cl->length == NULL |
2196 | || current_ts.u.cl->length->expr_type != EXPR_CONSTANT)) | |
949d5b72 | 2197 | { |
b76e28c6 | 2198 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
bc21d315 | 2199 | cl->length = gfc_copy_expr (current_ts.u.cl->length); |
949d5b72 PT |
2200 | } |
2201 | else | |
bc21d315 | 2202 | cl = current_ts.u.cl; |
949d5b72 | 2203 | |
e69afb29 SK |
2204 | cl_deferred = current_ts.deferred; |
2205 | ||
6de9cd9a DN |
2206 | break; |
2207 | ||
2208 | case MATCH_ERROR: | |
2209 | goto cleanup; | |
2210 | } | |
2211 | } | |
2212 | ||
4668d6f9 PT |
2213 | /* The dummy arguments and result of the abreviated form of MODULE |
2214 | PROCEDUREs, used in SUBMODULES should not be redefined. */ | |
2215 | if (gfc_current_ns->proc_name | |
2216 | && gfc_current_ns->proc_name->abr_modproc_decl) | |
2217 | { | |
2218 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2219 | if (sym != NULL && (sym->attr.dummy || sym->attr.result)) | |
2220 | { | |
2221 | m = MATCH_ERROR; | |
811582ec | 2222 | gfc_error ("%qs at %C is a redefinition of the declaration " |
4668d6f9 | 2223 | "in the corresponding interface for MODULE " |
811582ec | 2224 | "PROCEDURE %qs", sym->name, |
4668d6f9 PT |
2225 | gfc_current_ns->proc_name->name); |
2226 | goto cleanup; | |
2227 | } | |
2228 | } | |
2229 | ||
83d890b9 | 2230 | /* If this symbol has already shown up in a Cray Pointer declaration, |
88f7d6fb | 2231 | and this is not a component declaration, |
66e4ab31 | 2232 | then we want to set the type & bail out. */ |
f6288c24 | 2233 | if (flag_cray_pointer && !gfc_comp_struct (gfc_current_state ())) |
83d890b9 AL |
2234 | { |
2235 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2236 | if (sym != NULL && sym->attr.cray_pointee) | |
2237 | { | |
2238 | sym->ts.type = current_ts.type; | |
2239 | sym->ts.kind = current_ts.kind; | |
bc21d315 JW |
2240 | sym->ts.u.cl = cl; |
2241 | sym->ts.u.derived = current_ts.u.derived; | |
a8b3b0b6 CR |
2242 | sym->ts.is_c_interop = current_ts.is_c_interop; |
2243 | sym->ts.is_iso_c = current_ts.is_iso_c; | |
83d890b9 | 2244 | m = MATCH_YES; |
f5acf0f2 | 2245 | |
83d890b9 AL |
2246 | /* Check to see if we have an array specification. */ |
2247 | if (cp_as != NULL) | |
2248 | { | |
2249 | if (sym->as != NULL) | |
2250 | { | |
e25a0da3 | 2251 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
2252 | gfc_free_array_spec (cp_as); |
2253 | m = MATCH_ERROR; | |
2254 | goto cleanup; | |
2255 | } | |
2256 | else | |
2257 | { | |
524af0d6 | 2258 | if (!gfc_set_array_spec (sym, cp_as, &var_locus)) |
83d890b9 | 2259 | gfc_internal_error ("Couldn't set pointee array spec."); |
d51347f9 | 2260 | |
83d890b9 | 2261 | /* Fix the array spec. */ |
d51347f9 | 2262 | m = gfc_mod_pointee_as (sym->as); |
83d890b9 AL |
2263 | if (m == MATCH_ERROR) |
2264 | goto cleanup; | |
2265 | } | |
d51347f9 | 2266 | } |
83d890b9 AL |
2267 | goto cleanup; |
2268 | } | |
2269 | else | |
2270 | { | |
2271 | gfc_free_array_spec (cp_as); | |
2272 | } | |
2273 | } | |
d51347f9 | 2274 | |
3070bab4 JW |
2275 | /* Procedure pointer as function result. */ |
2276 | if (gfc_current_state () == COMP_FUNCTION | |
2277 | && strcmp ("ppr@", gfc_current_block ()->name) == 0 | |
2278 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) == 0) | |
2279 | strcpy (name, "ppr@"); | |
2280 | ||
2281 | if (gfc_current_state () == COMP_FUNCTION | |
2282 | && strcmp (name, gfc_current_block ()->name) == 0 | |
2283 | && gfc_current_block ()->result | |
2284 | && strcmp ("ppr@", gfc_current_block ()->result->name) == 0) | |
2285 | strcpy (name, "ppr@"); | |
d51347f9 | 2286 | |
6de9cd9a DN |
2287 | /* OK, we've successfully matched the declaration. Now put the |
2288 | symbol in the current namespace, because it might be used in the | |
69de3b83 | 2289 | optional initialization expression for this symbol, e.g. this is |
6de9cd9a DN |
2290 | perfectly legal: |
2291 | ||
2292 | integer, parameter :: i = huge(i) | |
2293 | ||
2294 | This is only true for parameters or variables of a basic type. | |
2295 | For components of derived types, it is not true, so we don't | |
2296 | create a symbol for those yet. If we fail to create the symbol, | |
2297 | bail out. */ | |
f6288c24 | 2298 | if (!gfc_comp_struct (gfc_current_state ()) |
524af0d6 | 2299 | && !build_sym (name, cl, cl_deferred, &as, &var_locus)) |
6de9cd9a | 2300 | { |
72af9f0b PT |
2301 | m = MATCH_ERROR; |
2302 | goto cleanup; | |
2303 | } | |
2304 | ||
524af0d6 | 2305 | if (!check_function_name (name)) |
6de9cd9a | 2306 | { |
6de9cd9a DN |
2307 | m = MATCH_ERROR; |
2308 | goto cleanup; | |
2309 | } | |
2310 | ||
294fbfc8 TS |
2311 | /* We allow old-style initializations of the form |
2312 | integer i /2/, j(4) /3*3, 1/ | |
2313 | (if no colon has been seen). These are different from data | |
2314 | statements in that initializers are only allowed to apply to the | |
2315 | variable immediately preceding, i.e. | |
2316 | integer i, j /1, 2/ | |
2317 | is not allowed. Therefore we have to do some work manually, that | |
75d17889 | 2318 | could otherwise be left to the matchers for DATA statements. */ |
294fbfc8 TS |
2319 | |
2320 | if (!colon_seen && gfc_match (" /") == MATCH_YES) | |
2321 | { | |
524af0d6 JB |
2322 | if (!gfc_notify_std (GFC_STD_GNU, "Old-style " |
2323 | "initialization at %C")) | |
294fbfc8 | 2324 | return MATCH_ERROR; |
f6288c24 FR |
2325 | |
2326 | /* Allow old style initializations for components of STRUCTUREs and MAPs | |
2327 | but not components of derived types. */ | |
b18f1efc JJ |
2328 | else if (gfc_current_state () == COMP_DERIVED) |
2329 | { | |
2330 | gfc_error ("Invalid old style initialization for derived type " | |
2331 | "component at %C"); | |
2332 | m = MATCH_ERROR; | |
2333 | goto cleanup; | |
2334 | } | |
f5acf0f2 | 2335 | |
f6288c24 FR |
2336 | /* For structure components, read the initializer as a special |
2337 | expression and let the rest of this function apply the initializer | |
2338 | as usual. */ | |
2339 | else if (gfc_comp_struct (gfc_current_state ())) | |
2340 | { | |
2341 | m = match_clist_expr (&initializer, ¤t_ts, as); | |
2342 | if (m == MATCH_NO) | |
2343 | gfc_error ("Syntax error in old style initialization of %s at %C", | |
2344 | name); | |
2345 | if (m != MATCH_YES) | |
2346 | goto cleanup; | |
2347 | } | |
2348 | ||
2349 | /* Otherwise we treat the old style initialization just like a | |
2350 | DATA declaration for the current variable. */ | |
2351 | else | |
2352 | return match_old_style_init (name); | |
294fbfc8 TS |
2353 | } |
2354 | ||
6de9cd9a DN |
2355 | /* The double colon must be present in order to have initializers. |
2356 | Otherwise the statement is ambiguous with an assignment statement. */ | |
2357 | if (colon_seen) | |
2358 | { | |
2359 | if (gfc_match (" =>") == MATCH_YES) | |
2360 | { | |
6de9cd9a DN |
2361 | if (!current_attr.pointer) |
2362 | { | |
2363 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
2364 | m = MATCH_ERROR; | |
2365 | goto cleanup; | |
2366 | } | |
2367 | ||
80f95228 | 2368 | m = match_pointer_init (&initializer, 0); |
6de9cd9a DN |
2369 | if (m != MATCH_YES) |
2370 | goto cleanup; | |
6de9cd9a DN |
2371 | } |
2372 | else if (gfc_match_char ('=') == MATCH_YES) | |
2373 | { | |
2374 | if (current_attr.pointer) | |
2375 | { | |
a4d9b221 TB |
2376 | gfc_error ("Pointer initialization at %C requires %<=>%>, " |
2377 | "not %<=%>"); | |
6de9cd9a DN |
2378 | m = MATCH_ERROR; |
2379 | goto cleanup; | |
2380 | } | |
2381 | ||
2382 | m = gfc_match_init_expr (&initializer); | |
2383 | if (m == MATCH_NO) | |
2384 | { | |
2385 | gfc_error ("Expected an initialization expression at %C"); | |
2386 | m = MATCH_ERROR; | |
2387 | } | |
2388 | ||
ade20620 | 2389 | if (current_attr.flavor != FL_PARAMETER && gfc_pure (NULL) |
f6288c24 | 2390 | && !gfc_comp_struct (gfc_state_stack->state)) |
6de9cd9a | 2391 | { |
636dff67 SK |
2392 | gfc_error ("Initialization of variable at %C is not allowed in " |
2393 | "a PURE procedure"); | |
6de9cd9a DN |
2394 | m = MATCH_ERROR; |
2395 | } | |
2396 | ||
ccd7751b | 2397 | if (current_attr.flavor != FL_PARAMETER |
f6288c24 | 2398 | && !gfc_comp_struct (gfc_state_stack->state)) |
ccd7751b TB |
2399 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
2400 | ||
6de9cd9a DN |
2401 | if (m != MATCH_YES) |
2402 | goto cleanup; | |
2403 | } | |
cb44ab82 VL |
2404 | } |
2405 | ||
5046aff5 | 2406 | if (initializer != NULL && current_attr.allocatable |
f6288c24 | 2407 | && gfc_comp_struct (gfc_current_state ())) |
5046aff5 | 2408 | { |
636dff67 SK |
2409 | gfc_error ("Initialization of allocatable component at %C is not " |
2410 | "allowed"); | |
5046aff5 PT |
2411 | m = MATCH_ERROR; |
2412 | goto cleanup; | |
2413 | } | |
2414 | ||
54b4ba60 | 2415 | /* Add the initializer. Note that it is fine if initializer is |
6de9cd9a DN |
2416 | NULL here, because we sometimes also need to check if a |
2417 | declaration *must* have an initialization expression. */ | |
f6288c24 | 2418 | if (!gfc_comp_struct (gfc_current_state ())) |
6de9cd9a DN |
2419 | t = add_init_expr_to_sym (name, &initializer, &var_locus); |
2420 | else | |
54b4ba60 | 2421 | { |
5046aff5 | 2422 | if (current_ts.type == BT_DERIVED |
636dff67 | 2423 | && !current_attr.pointer && !initializer) |
54b4ba60 PB |
2424 | initializer = gfc_default_initializer (¤t_ts); |
2425 | t = build_struct (name, cl, &initializer, &as); | |
f6288c24 FR |
2426 | |
2427 | /* If we match a nested structure definition we expect to see the | |
2428 | * body even if the variable declarations blow up, so we need to keep | |
2429 | * the structure declaration around. */ | |
2430 | if (gfc_new_block && gfc_new_block->attr.flavor == FL_STRUCT) | |
2431 | gfc_commit_symbol (gfc_new_block); | |
54b4ba60 | 2432 | } |
6de9cd9a | 2433 | |
524af0d6 | 2434 | m = (t) ? MATCH_YES : MATCH_ERROR; |
6de9cd9a DN |
2435 | |
2436 | cleanup: | |
2437 | /* Free stuff up and return. */ | |
2438 | gfc_free_expr (initializer); | |
2439 | gfc_free_array_spec (as); | |
2440 | ||
2441 | return m; | |
2442 | } | |
2443 | ||
2444 | ||
b2b81a3f BM |
2445 | /* Match an extended-f77 "TYPESPEC*bytesize"-style kind specification. |
2446 | This assumes that the byte size is equal to the kind number for | |
2447 | non-COMPLEX types, and equal to twice the kind number for COMPLEX. */ | |
6de9cd9a DN |
2448 | |
2449 | match | |
636dff67 | 2450 | gfc_match_old_kind_spec (gfc_typespec *ts) |
6de9cd9a DN |
2451 | { |
2452 | match m; | |
5cf54585 | 2453 | int original_kind; |
6de9cd9a DN |
2454 | |
2455 | if (gfc_match_char ('*') != MATCH_YES) | |
2456 | return MATCH_NO; | |
2457 | ||
5cf54585 | 2458 | m = gfc_match_small_literal_int (&ts->kind, NULL); |
6de9cd9a DN |
2459 | if (m != MATCH_YES) |
2460 | return MATCH_ERROR; | |
2461 | ||
e45b3c75 ES |
2462 | original_kind = ts->kind; |
2463 | ||
6de9cd9a | 2464 | /* Massage the kind numbers for complex types. */ |
e45b3c75 ES |
2465 | if (ts->type == BT_COMPLEX) |
2466 | { | |
2467 | if (ts->kind % 2) | |
636dff67 SK |
2468 | { |
2469 | gfc_error ("Old-style type declaration %s*%d not supported at %C", | |
2470 | gfc_basic_typename (ts->type), original_kind); | |
2471 | return MATCH_ERROR; | |
2472 | } | |
e45b3c75 | 2473 | ts->kind /= 2; |
f4347334 ZG |
2474 | |
2475 | } | |
2476 | ||
203c7ebf | 2477 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
f4347334 ZG |
2478 | ts->kind = 8; |
2479 | ||
2480 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2481 | { | |
2482 | if (ts->kind == 4) | |
2483 | { | |
203c7ebf | 2484 | if (flag_real4_kind == 8) |
f4347334 | 2485 | ts->kind = 8; |
203c7ebf | 2486 | if (flag_real4_kind == 10) |
f4347334 | 2487 | ts->kind = 10; |
203c7ebf | 2488 | if (flag_real4_kind == 16) |
f4347334 ZG |
2489 | ts->kind = 16; |
2490 | } | |
2491 | ||
2492 | if (ts->kind == 8) | |
2493 | { | |
203c7ebf | 2494 | if (flag_real8_kind == 4) |
f4347334 | 2495 | ts->kind = 4; |
203c7ebf | 2496 | if (flag_real8_kind == 10) |
f4347334 | 2497 | ts->kind = 10; |
203c7ebf | 2498 | if (flag_real8_kind == 16) |
f4347334 ZG |
2499 | ts->kind = 16; |
2500 | } | |
e45b3c75 | 2501 | } |
6de9cd9a | 2502 | |
e7a2d5fb | 2503 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a | 2504 | { |
e45b3c75 | 2505 | gfc_error ("Old-style type declaration %s*%d not supported at %C", |
636dff67 | 2506 | gfc_basic_typename (ts->type), original_kind); |
6de9cd9a DN |
2507 | return MATCH_ERROR; |
2508 | } | |
2509 | ||
70112e2a PT |
2510 | if (!gfc_notify_std (GFC_STD_GNU, |
2511 | "Nonstandard type declaration %s*%d at %C", | |
524af0d6 | 2512 | gfc_basic_typename(ts->type), original_kind)) |
df8652dc SK |
2513 | return MATCH_ERROR; |
2514 | ||
6de9cd9a DN |
2515 | return MATCH_YES; |
2516 | } | |
2517 | ||
2518 | ||
2519 | /* Match a kind specification. Since kinds are generally optional, we | |
2520 | usually return MATCH_NO if something goes wrong. If a "kind=" | |
2521 | string is found, then we know we have an error. */ | |
2522 | ||
2523 | match | |
e2d29968 | 2524 | gfc_match_kind_spec (gfc_typespec *ts, bool kind_expr_only) |
6de9cd9a | 2525 | { |
e2d29968 | 2526 | locus where, loc; |
6de9cd9a DN |
2527 | gfc_expr *e; |
2528 | match m, n; | |
96ee3a4a | 2529 | char c; |
6de9cd9a DN |
2530 | const char *msg; |
2531 | ||
2532 | m = MATCH_NO; | |
e2d29968 | 2533 | n = MATCH_YES; |
6de9cd9a DN |
2534 | e = NULL; |
2535 | ||
e2d29968 PT |
2536 | where = loc = gfc_current_locus; |
2537 | ||
2538 | if (kind_expr_only) | |
2539 | goto kind_expr; | |
6de9cd9a DN |
2540 | |
2541 | if (gfc_match_char ('(') == MATCH_NO) | |
2542 | return MATCH_NO; | |
2543 | ||
2544 | /* Also gobbles optional text. */ | |
2545 | if (gfc_match (" kind = ") == MATCH_YES) | |
2546 | m = MATCH_ERROR; | |
2547 | ||
e2d29968 PT |
2548 | loc = gfc_current_locus; |
2549 | ||
2550 | kind_expr: | |
6de9cd9a | 2551 | n = gfc_match_init_expr (&e); |
e2d29968 | 2552 | |
6de9cd9a | 2553 | if (n != MATCH_YES) |
e2d29968 | 2554 | { |
1c8bcdf7 | 2555 | if (gfc_matching_function) |
e2d29968 | 2556 | { |
f5acf0f2 | 2557 | /* The function kind expression might include use associated or |
1c8bcdf7 PT |
2558 | imported parameters and try again after the specification |
2559 | expressions..... */ | |
e2d29968 PT |
2560 | if (gfc_match_char (')') != MATCH_YES) |
2561 | { | |
2562 | gfc_error ("Missing right parenthesis at %C"); | |
2563 | m = MATCH_ERROR; | |
2564 | goto no_match; | |
2565 | } | |
2566 | ||
2567 | gfc_free_expr (e); | |
e2d29968 PT |
2568 | gfc_undo_symbols (); |
2569 | return MATCH_YES; | |
2570 | } | |
2571 | else | |
2572 | { | |
2573 | /* ....or else, the match is real. */ | |
2574 | if (n == MATCH_NO) | |
2575 | gfc_error ("Expected initialization expression at %C"); | |
2576 | if (n != MATCH_YES) | |
2577 | return MATCH_ERROR; | |
2578 | } | |
2579 | } | |
6de9cd9a DN |
2580 | |
2581 | if (e->rank != 0) | |
2582 | { | |
2583 | gfc_error ("Expected scalar initialization expression at %C"); | |
2584 | m = MATCH_ERROR; | |
2585 | goto no_match; | |
2586 | } | |
2587 | ||
2588 | msg = gfc_extract_int (e, &ts->kind); | |
1c8bcdf7 | 2589 | |
6de9cd9a DN |
2590 | if (msg != NULL) |
2591 | { | |
2592 | gfc_error (msg); | |
2593 | m = MATCH_ERROR; | |
2594 | goto no_match; | |
2595 | } | |
2596 | ||
a8b3b0b6 CR |
2597 | /* Before throwing away the expression, let's see if we had a |
2598 | C interoperable kind (and store the fact). */ | |
2599 | if (e->ts.is_c_interop == 1) | |
2600 | { | |
eea58adb | 2601 | /* Mark this as C interoperable if being declared with one |
a8b3b0b6 CR |
2602 | of the named constants from iso_c_binding. */ |
2603 | ts->is_c_interop = e->ts.is_iso_c; | |
2604 | ts->f90_type = e->ts.f90_type; | |
2605 | } | |
f5acf0f2 | 2606 | |
6de9cd9a DN |
2607 | gfc_free_expr (e); |
2608 | e = NULL; | |
2609 | ||
a8b3b0b6 CR |
2610 | /* Ignore errors to this point, if we've gotten here. This means |
2611 | we ignore the m=MATCH_ERROR from above. */ | |
e7a2d5fb | 2612 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a DN |
2613 | { |
2614 | gfc_error ("Kind %d not supported for type %s at %C", ts->kind, | |
2615 | gfc_basic_typename (ts->type)); | |
96ee3a4a TB |
2616 | gfc_current_locus = where; |
2617 | return MATCH_ERROR; | |
6de9cd9a | 2618 | } |
96ee3a4a | 2619 | |
2ec855f1 TB |
2620 | /* Warn if, e.g., c_int is used for a REAL variable, but not |
2621 | if, e.g., c_double is used for COMPLEX as the standard | |
2622 | explicitly says that the kind type parameter for complex and real | |
2623 | variable is the same, i.e. c_float == c_float_complex. */ | |
2624 | if (ts->f90_type != BT_UNKNOWN && ts->f90_type != ts->type | |
2625 | && !((ts->f90_type == BT_REAL && ts->type == BT_COMPLEX) | |
2626 | || (ts->f90_type == BT_COMPLEX && ts->type == BT_REAL))) | |
db30e21c | 2627 | gfc_warning_now (0, "C kind type parameter is for type %s but type at %L " |
2be51762 TB |
2628 | "is %s", gfc_basic_typename (ts->f90_type), &where, |
2629 | gfc_basic_typename (ts->type)); | |
2ec855f1 | 2630 | |
96ee3a4a | 2631 | gfc_gobble_whitespace (); |
8fc541d3 FXC |
2632 | if ((c = gfc_next_ascii_char ()) != ')' |
2633 | && (ts->type != BT_CHARACTER || c != ',')) | |
6de9cd9a | 2634 | { |
96ee3a4a TB |
2635 | if (ts->type == BT_CHARACTER) |
2636 | gfc_error ("Missing right parenthesis or comma at %C"); | |
2637 | else | |
2638 | gfc_error ("Missing right parenthesis at %C"); | |
e2d29968 | 2639 | m = MATCH_ERROR; |
6de9cd9a | 2640 | } |
a8b3b0b6 CR |
2641 | else |
2642 | /* All tests passed. */ | |
2643 | m = MATCH_YES; | |
6de9cd9a | 2644 | |
a8b3b0b6 CR |
2645 | if(m == MATCH_ERROR) |
2646 | gfc_current_locus = where; | |
f4347334 | 2647 | |
203c7ebf | 2648 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
f4347334 ZG |
2649 | ts->kind = 8; |
2650 | ||
2651 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2652 | { | |
2653 | if (ts->kind == 4) | |
2654 | { | |
203c7ebf | 2655 | if (flag_real4_kind == 8) |
f4347334 | 2656 | ts->kind = 8; |
203c7ebf | 2657 | if (flag_real4_kind == 10) |
f4347334 | 2658 | ts->kind = 10; |
203c7ebf | 2659 | if (flag_real4_kind == 16) |
f4347334 ZG |
2660 | ts->kind = 16; |
2661 | } | |
2662 | ||
2663 | if (ts->kind == 8) | |
2664 | { | |
203c7ebf | 2665 | if (flag_real8_kind == 4) |
f4347334 | 2666 | ts->kind = 4; |
203c7ebf | 2667 | if (flag_real8_kind == 10) |
f4347334 | 2668 | ts->kind = 10; |
203c7ebf | 2669 | if (flag_real8_kind == 16) |
f4347334 ZG |
2670 | ts->kind = 16; |
2671 | } | |
2672 | } | |
2673 | ||
a8b3b0b6 CR |
2674 | /* Return what we know from the test(s). */ |
2675 | return m; | |
6de9cd9a DN |
2676 | |
2677 | no_match: | |
2678 | gfc_free_expr (e); | |
63645982 | 2679 | gfc_current_locus = where; |
6de9cd9a DN |
2680 | return m; |
2681 | } | |
2682 | ||
2683 | ||
187de1ed FXC |
2684 | static match |
2685 | match_char_kind (int * kind, int * is_iso_c) | |
2686 | { | |
2687 | locus where; | |
2688 | gfc_expr *e; | |
2689 | match m, n; | |
2690 | const char *msg; | |
2691 | ||
2692 | m = MATCH_NO; | |
2693 | e = NULL; | |
2694 | where = gfc_current_locus; | |
2695 | ||
2696 | n = gfc_match_init_expr (&e); | |
96ee3a4a | 2697 | |
1c8bcdf7 | 2698 | if (n != MATCH_YES && gfc_matching_function) |
96ee3a4a | 2699 | { |
1c8bcdf7 | 2700 | /* The expression might include use-associated or imported |
f5acf0f2 | 2701 | parameters and try again after the specification |
1c8bcdf7 | 2702 | expressions. */ |
96ee3a4a | 2703 | gfc_free_expr (e); |
96ee3a4a TB |
2704 | gfc_undo_symbols (); |
2705 | return MATCH_YES; | |
2706 | } | |
2707 | ||
187de1ed FXC |
2708 | if (n == MATCH_NO) |
2709 | gfc_error ("Expected initialization expression at %C"); | |
2710 | if (n != MATCH_YES) | |
2711 | return MATCH_ERROR; | |
2712 | ||
2713 | if (e->rank != 0) | |
2714 | { | |
2715 | gfc_error ("Expected scalar initialization expression at %C"); | |
2716 | m = MATCH_ERROR; | |
2717 | goto no_match; | |
2718 | } | |
2719 | ||
2720 | msg = gfc_extract_int (e, kind); | |
2721 | *is_iso_c = e->ts.is_iso_c; | |
2722 | if (msg != NULL) | |
2723 | { | |
2724 | gfc_error (msg); | |
2725 | m = MATCH_ERROR; | |
2726 | goto no_match; | |
2727 | } | |
2728 | ||
2729 | gfc_free_expr (e); | |
2730 | ||
2731 | /* Ignore errors to this point, if we've gotten here. This means | |
2732 | we ignore the m=MATCH_ERROR from above. */ | |
2733 | if (gfc_validate_kind (BT_CHARACTER, *kind, true) < 0) | |
2734 | { | |
2735 | gfc_error ("Kind %d is not supported for CHARACTER at %C", *kind); | |
2736 | m = MATCH_ERROR; | |
2737 | } | |
2738 | else | |
2739 | /* All tests passed. */ | |
2740 | m = MATCH_YES; | |
2741 | ||
2742 | if (m == MATCH_ERROR) | |
2743 | gfc_current_locus = where; | |
f5acf0f2 | 2744 | |
187de1ed FXC |
2745 | /* Return what we know from the test(s). */ |
2746 | return m; | |
2747 | ||
2748 | no_match: | |
2749 | gfc_free_expr (e); | |
2750 | gfc_current_locus = where; | |
2751 | return m; | |
2752 | } | |
2753 | ||
8234e5e0 | 2754 | |
6de9cd9a DN |
2755 | /* Match the various kind/length specifications in a CHARACTER |
2756 | declaration. We don't return MATCH_NO. */ | |
2757 | ||
8234e5e0 SK |
2758 | match |
2759 | gfc_match_char_spec (gfc_typespec *ts) | |
6de9cd9a | 2760 | { |
187de1ed | 2761 | int kind, seen_length, is_iso_c; |
6de9cd9a DN |
2762 | gfc_charlen *cl; |
2763 | gfc_expr *len; | |
2764 | match m; | |
e69afb29 | 2765 | bool deferred; |
187de1ed | 2766 | |
6de9cd9a DN |
2767 | len = NULL; |
2768 | seen_length = 0; | |
187de1ed FXC |
2769 | kind = 0; |
2770 | is_iso_c = 0; | |
e69afb29 | 2771 | deferred = false; |
6de9cd9a DN |
2772 | |
2773 | /* Try the old-style specification first. */ | |
2774 | old_char_selector = 0; | |
2775 | ||
2767f2cc | 2776 | m = match_char_length (&len, &deferred, true); |
6de9cd9a DN |
2777 | if (m != MATCH_NO) |
2778 | { | |
2779 | if (m == MATCH_YES) | |
2780 | old_char_selector = 1; | |
2781 | seen_length = 1; | |
2782 | goto done; | |
2783 | } | |
2784 | ||
2785 | m = gfc_match_char ('('); | |
2786 | if (m != MATCH_YES) | |
2787 | { | |
a8b3b0b6 | 2788 | m = MATCH_YES; /* Character without length is a single char. */ |
6de9cd9a DN |
2789 | goto done; |
2790 | } | |
2791 | ||
a8b3b0b6 | 2792 | /* Try the weird case: ( KIND = <int> [ , LEN = <len-param> ] ). */ |
6de9cd9a DN |
2793 | if (gfc_match (" kind =") == MATCH_YES) |
2794 | { | |
187de1ed | 2795 | m = match_char_kind (&kind, &is_iso_c); |
f5acf0f2 | 2796 | |
6de9cd9a DN |
2797 | if (m == MATCH_ERROR) |
2798 | goto done; | |
2799 | if (m == MATCH_NO) | |
2800 | goto syntax; | |
2801 | ||
2802 | if (gfc_match (" , len =") == MATCH_NO) | |
2803 | goto rparen; | |
2804 | ||
e69afb29 | 2805 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
2806 | if (m == MATCH_NO) |
2807 | goto syntax; | |
2808 | if (m == MATCH_ERROR) | |
2809 | goto done; | |
2810 | seen_length = 1; | |
2811 | ||
2812 | goto rparen; | |
2813 | } | |
2814 | ||
66e4ab31 | 2815 | /* Try to match "LEN = <len-param>" or "LEN = <len-param>, KIND = <int>". */ |
6de9cd9a DN |
2816 | if (gfc_match (" len =") == MATCH_YES) |
2817 | { | |
e69afb29 | 2818 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
2819 | if (m == MATCH_NO) |
2820 | goto syntax; | |
2821 | if (m == MATCH_ERROR) | |
2822 | goto done; | |
2823 | seen_length = 1; | |
2824 | ||
2825 | if (gfc_match_char (')') == MATCH_YES) | |
2826 | goto done; | |
2827 | ||
2828 | if (gfc_match (" , kind =") != MATCH_YES) | |
2829 | goto syntax; | |
2830 | ||
187de1ed FXC |
2831 | if (match_char_kind (&kind, &is_iso_c) == MATCH_ERROR) |
2832 | goto done; | |
6de9cd9a DN |
2833 | |
2834 | goto rparen; | |
2835 | } | |
2836 | ||
66e4ab31 | 2837 | /* Try to match ( <len-param> ) or ( <len-param> , [ KIND = ] <int> ). */ |
e69afb29 | 2838 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
2839 | if (m == MATCH_NO) |
2840 | goto syntax; | |
2841 | if (m == MATCH_ERROR) | |
2842 | goto done; | |
2843 | seen_length = 1; | |
2844 | ||
2845 | m = gfc_match_char (')'); | |
2846 | if (m == MATCH_YES) | |
2847 | goto done; | |
2848 | ||
2849 | if (gfc_match_char (',') != MATCH_YES) | |
2850 | goto syntax; | |
2851 | ||
a8b3b0b6 | 2852 | gfc_match (" kind ="); /* Gobble optional text. */ |
6de9cd9a | 2853 | |
187de1ed | 2854 | m = match_char_kind (&kind, &is_iso_c); |
6de9cd9a DN |
2855 | if (m == MATCH_ERROR) |
2856 | goto done; | |
2857 | if (m == MATCH_NO) | |
2858 | goto syntax; | |
2859 | ||
2860 | rparen: | |
2861 | /* Require a right-paren at this point. */ | |
2862 | m = gfc_match_char (')'); | |
2863 | if (m == MATCH_YES) | |
2864 | goto done; | |
2865 | ||
2866 | syntax: | |
2867 | gfc_error ("Syntax error in CHARACTER declaration at %C"); | |
2868 | m = MATCH_ERROR; | |
16f8ffc8 JD |
2869 | gfc_free_expr (len); |
2870 | return m; | |
6de9cd9a DN |
2871 | |
2872 | done: | |
a99d95a2 PT |
2873 | /* Deal with character functions after USE and IMPORT statements. */ |
2874 | if (gfc_matching_function) | |
1c8bcdf7 | 2875 | { |
a99d95a2 | 2876 | gfc_free_expr (len); |
1c8bcdf7 PT |
2877 | gfc_undo_symbols (); |
2878 | return MATCH_YES; | |
2879 | } | |
2880 | ||
6de9cd9a DN |
2881 | if (m != MATCH_YES) |
2882 | { | |
2883 | gfc_free_expr (len); | |
2884 | return m; | |
2885 | } | |
2886 | ||
2887 | /* Do some final massaging of the length values. */ | |
b76e28c6 | 2888 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
2889 | |
2890 | if (seen_length == 0) | |
b7e75771 | 2891 | cl->length = gfc_get_int_expr (gfc_default_integer_kind, NULL, 1); |
6de9cd9a | 2892 | else |
5cd09fac | 2893 | cl->length = len; |
6de9cd9a | 2894 | |
bc21d315 | 2895 | ts->u.cl = cl; |
187de1ed | 2896 | ts->kind = kind == 0 ? gfc_default_character_kind : kind; |
e69afb29 | 2897 | ts->deferred = deferred; |
6de9cd9a | 2898 | |
eea58adb | 2899 | /* We have to know if it was a C interoperable kind so we can |
a8b3b0b6 | 2900 | do accurate type checking of bind(c) procs, etc. */ |
187de1ed | 2901 | if (kind != 0) |
eea58adb | 2902 | /* Mark this as C interoperable if being declared with one |
187de1ed FXC |
2903 | of the named constants from iso_c_binding. */ |
2904 | ts->is_c_interop = is_iso_c; | |
a8b3b0b6 | 2905 | else if (len != NULL) |
187de1ed FXC |
2906 | /* Here, we might have parsed something such as: character(c_char) |
2907 | In this case, the parsing code above grabs the c_char when | |
2908 | looking for the length (line 1690, roughly). it's the last | |
2909 | testcase for parsing the kind params of a character variable. | |
2910 | However, it's not actually the length. this seems like it | |
f5acf0f2 | 2911 | could be an error. |
187de1ed FXC |
2912 | To see if the user used a C interop kind, test the expr |
2913 | of the so called length, and see if it's C interoperable. */ | |
2914 | ts->is_c_interop = len->ts.is_iso_c; | |
f5acf0f2 | 2915 | |
6de9cd9a DN |
2916 | return MATCH_YES; |
2917 | } | |
2918 | ||
2919 | ||
f6288c24 FR |
2920 | /* Matches a RECORD declaration. */ |
2921 | ||
2922 | static match | |
e79e6763 | 2923 | match_record_decl (char *name) |
f6288c24 FR |
2924 | { |
2925 | locus old_loc; | |
2926 | old_loc = gfc_current_locus; | |
e79e6763 | 2927 | match m; |
f6288c24 | 2928 | |
e79e6763 FR |
2929 | m = gfc_match (" record /"); |
2930 | if (m == MATCH_YES) | |
f6288c24 FR |
2931 | { |
2932 | if (!gfc_option.flag_dec_structure) | |
2933 | { | |
2934 | gfc_current_locus = old_loc; | |
2935 | gfc_error ("RECORD at %C is an extension, enable it with " | |
2936 | "-fdec-structure"); | |
2937 | return MATCH_ERROR; | |
2938 | } | |
e79e6763 FR |
2939 | m = gfc_match (" %n/", name); |
2940 | if (m == MATCH_YES) | |
2941 | return MATCH_YES; | |
f6288c24 FR |
2942 | } |
2943 | ||
e79e6763 FR |
2944 | gfc_current_locus = old_loc; |
2945 | if (gfc_option.flag_dec_structure | |
2946 | && (gfc_match (" record% ") == MATCH_YES | |
2947 | || gfc_match (" record%t") == MATCH_YES)) | |
2948 | gfc_error ("Structure name expected after RECORD at %C"); | |
2949 | if (m == MATCH_NO) | |
f6288c24 | 2950 | return MATCH_NO; |
e79e6763 FR |
2951 | |
2952 | return MATCH_ERROR; | |
f6288c24 FR |
2953 | } |
2954 | ||
e74f1cc8 JW |
2955 | /* Matches a declaration-type-spec (F03:R502). If successful, sets the ts |
2956 | structure to the matched specification. This is necessary for FUNCTION and | |
6de9cd9a DN |
2957 | IMPLICIT statements. |
2958 | ||
d51347f9 | 2959 | If implicit_flag is nonzero, then we don't check for the optional |
e5ddaa24 | 2960 | kind specification. Not doing so is needed for matching an IMPLICIT |
6de9cd9a DN |
2961 | statement correctly. */ |
2962 | ||
e2d29968 | 2963 | match |
e74f1cc8 | 2964 | gfc_match_decl_type_spec (gfc_typespec *ts, int implicit_flag) |
6de9cd9a DN |
2965 | { |
2966 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c3f34952 | 2967 | gfc_symbol *sym, *dt_sym; |
6de9cd9a | 2968 | match m; |
8fc541d3 | 2969 | char c; |
0fb56814 | 2970 | bool seen_deferred_kind, matched_type; |
c3f34952 | 2971 | const char *dt_name; |
6de9cd9a | 2972 | |
1c8bcdf7 PT |
2973 | /* A belt and braces check that the typespec is correctly being treated |
2974 | as a deferred characteristic association. */ | |
2975 | seen_deferred_kind = (gfc_current_state () == COMP_FUNCTION) | |
a99d95a2 PT |
2976 | && (gfc_current_block ()->result->ts.kind == -1) |
2977 | && (ts->kind == -1); | |
6de9cd9a | 2978 | gfc_clear_ts (ts); |
1c8bcdf7 PT |
2979 | if (seen_deferred_kind) |
2980 | ts->kind = -1; | |
6de9cd9a | 2981 | |
a8b3b0b6 | 2982 | /* Clear the current binding label, in case one is given. */ |
62603fae | 2983 | curr_binding_label = NULL; |
a8b3b0b6 | 2984 | |
5f700e6d AL |
2985 | if (gfc_match (" byte") == MATCH_YES) |
2986 | { | |
524af0d6 | 2987 | if (!gfc_notify_std (GFC_STD_GNU, "BYTE type at %C")) |
5f700e6d AL |
2988 | return MATCH_ERROR; |
2989 | ||
2990 | if (gfc_validate_kind (BT_INTEGER, 1, true) < 0) | |
2991 | { | |
2992 | gfc_error ("BYTE type used at %C " | |
2993 | "is not available on the target machine"); | |
2994 | return MATCH_ERROR; | |
2995 | } | |
d51347f9 | 2996 | |
5f700e6d AL |
2997 | ts->type = BT_INTEGER; |
2998 | ts->kind = 1; | |
2999 | return MATCH_YES; | |
3000 | } | |
3001 | ||
0fb56814 | 3002 | |
45a69325 | 3003 | m = gfc_match (" type ("); |
0fb56814 | 3004 | matched_type = (m == MATCH_YES); |
45a69325 TB |
3005 | if (matched_type) |
3006 | { | |
3007 | gfc_gobble_whitespace (); | |
3008 | if (gfc_peek_ascii_char () == '*') | |
3009 | { | |
3010 | if ((m = gfc_match ("*)")) != MATCH_YES) | |
3011 | return m; | |
f6288c24 | 3012 | if (gfc_comp_struct (gfc_current_state ())) |
45a69325 TB |
3013 | { |
3014 | gfc_error ("Assumed type at %C is not allowed for components"); | |
3015 | return MATCH_ERROR; | |
3016 | } | |
524af0d6 JB |
3017 | if (!gfc_notify_std (GFC_STD_F2008_TS, "Assumed type " |
3018 | "at %C")) | |
45a69325 TB |
3019 | return MATCH_ERROR; |
3020 | ts->type = BT_ASSUMED; | |
3021 | return MATCH_YES; | |
3022 | } | |
3023 | ||
3024 | m = gfc_match ("%n", name); | |
3025 | matched_type = (m == MATCH_YES); | |
3026 | } | |
3027 | ||
0fb56814 TB |
3028 | if ((matched_type && strcmp ("integer", name) == 0) |
3029 | || (!matched_type && gfc_match (" integer") == MATCH_YES)) | |
6de9cd9a DN |
3030 | { |
3031 | ts->type = BT_INTEGER; | |
9d64df18 | 3032 | ts->kind = gfc_default_integer_kind; |
6de9cd9a DN |
3033 | goto get_kind; |
3034 | } | |
3035 | ||
0fb56814 TB |
3036 | if ((matched_type && strcmp ("character", name) == 0) |
3037 | || (!matched_type && gfc_match (" character") == MATCH_YES)) | |
6de9cd9a | 3038 | { |
0fb56814 | 3039 | if (matched_type |
524af0d6 JB |
3040 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3041 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
3042 | return MATCH_ERROR; |
3043 | ||
6de9cd9a | 3044 | ts->type = BT_CHARACTER; |
e5ddaa24 | 3045 | if (implicit_flag == 0) |
0fb56814 | 3046 | m = gfc_match_char_spec (ts); |
e5ddaa24 | 3047 | else |
0fb56814 TB |
3048 | m = MATCH_YES; |
3049 | ||
3050 | if (matched_type && m == MATCH_YES && gfc_match_char (')') != MATCH_YES) | |
3051 | m = MATCH_ERROR; | |
3052 | ||
3053 | return m; | |
6de9cd9a DN |
3054 | } |
3055 | ||
0fb56814 TB |
3056 | if ((matched_type && strcmp ("real", name) == 0) |
3057 | || (!matched_type && gfc_match (" real") == MATCH_YES)) | |
6de9cd9a DN |
3058 | { |
3059 | ts->type = BT_REAL; | |
9d64df18 | 3060 | ts->kind = gfc_default_real_kind; |
6de9cd9a DN |
3061 | goto get_kind; |
3062 | } | |
3063 | ||
0fb56814 TB |
3064 | if ((matched_type |
3065 | && (strcmp ("doubleprecision", name) == 0 | |
3066 | || (strcmp ("double", name) == 0 | |
3067 | && gfc_match (" precision") == MATCH_YES))) | |
3068 | || (!matched_type && gfc_match (" double precision") == MATCH_YES)) | |
6de9cd9a | 3069 | { |
0fb56814 | 3070 | if (matched_type |
524af0d6 JB |
3071 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3072 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
3073 | return MATCH_ERROR; |
3074 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
3075 | return MATCH_ERROR; | |
3076 | ||
6de9cd9a | 3077 | ts->type = BT_REAL; |
9d64df18 | 3078 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
3079 | return MATCH_YES; |
3080 | } | |
3081 | ||
0fb56814 TB |
3082 | if ((matched_type && strcmp ("complex", name) == 0) |
3083 | || (!matched_type && gfc_match (" complex") == MATCH_YES)) | |
6de9cd9a DN |
3084 | { |
3085 | ts->type = BT_COMPLEX; | |
9d64df18 | 3086 | ts->kind = gfc_default_complex_kind; |
6de9cd9a DN |
3087 | goto get_kind; |
3088 | } | |
3089 | ||
0fb56814 TB |
3090 | if ((matched_type |
3091 | && (strcmp ("doublecomplex", name) == 0 | |
3092 | || (strcmp ("double", name) == 0 | |
3093 | && gfc_match (" complex") == MATCH_YES))) | |
3094 | || (!matched_type && gfc_match (" double complex") == MATCH_YES)) | |
6de9cd9a | 3095 | { |
524af0d6 | 3096 | if (!gfc_notify_std (GFC_STD_GNU, "DOUBLE COMPLEX at %C")) |
0fb56814 TB |
3097 | return MATCH_ERROR; |
3098 | ||
3099 | if (matched_type | |
524af0d6 JB |
3100 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3101 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
3102 | return MATCH_ERROR; |
3103 | ||
3104 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
df8652dc SK |
3105 | return MATCH_ERROR; |
3106 | ||
6de9cd9a | 3107 | ts->type = BT_COMPLEX; |
9d64df18 | 3108 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
3109 | return MATCH_YES; |
3110 | } | |
3111 | ||
0fb56814 TB |
3112 | if ((matched_type && strcmp ("logical", name) == 0) |
3113 | || (!matched_type && gfc_match (" logical") == MATCH_YES)) | |
6de9cd9a DN |
3114 | { |
3115 | ts->type = BT_LOGICAL; | |
9d64df18 | 3116 | ts->kind = gfc_default_logical_kind; |
6de9cd9a DN |
3117 | goto get_kind; |
3118 | } | |
3119 | ||
0fb56814 TB |
3120 | if (matched_type) |
3121 | m = gfc_match_char (')'); | |
3122 | ||
f6288c24 FR |
3123 | if (m != MATCH_YES) |
3124 | m = match_record_decl (name); | |
3125 | ||
3126 | if (matched_type || m == MATCH_YES) | |
3127 | { | |
3128 | ts->type = BT_DERIVED; | |
3129 | /* We accept record/s/ or type(s) where s is a structure, but we | |
3130 | * don't need all the extra derived-type stuff for structures. */ | |
3131 | if (gfc_find_symbol (gfc_dt_upper_string (name), NULL, 1, &sym)) | |
3132 | { | |
3133 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
3134 | return MATCH_ERROR; | |
3135 | } | |
3136 | if (sym && sym->attr.flavor == FL_STRUCT) | |
3137 | { | |
3138 | ts->u.derived = sym; | |
3139 | return MATCH_YES; | |
3140 | } | |
3141 | /* Actually a derived type. */ | |
3142 | } | |
3143 | ||
cf2b3c22 | 3144 | else |
727e8544 | 3145 | { |
f6288c24 | 3146 | /* Match nested STRUCTURE declarations; only valid within another |
e79e6763 FR |
3147 | structure declaration. */ |
3148 | if (gfc_option.flag_dec_structure | |
3149 | && (gfc_current_state () == COMP_STRUCTURE | |
3150 | || gfc_current_state () == COMP_MAP)) | |
3151 | { | |
3152 | m = gfc_match (" structure"); | |
3153 | if (m == MATCH_YES) | |
3154 | { | |
3155 | m = gfc_match_structure_decl (); | |
3156 | if (m == MATCH_YES) | |
3157 | { | |
3158 | /* gfc_new_block is updated by match_structure_decl. */ | |
3159 | ts->type = BT_DERIVED; | |
3160 | ts->u.derived = gfc_new_block; | |
3161 | return MATCH_YES; | |
3162 | } | |
3163 | } | |
3164 | if (m == MATCH_ERROR) | |
3165 | return MATCH_ERROR; | |
3166 | } | |
f6288c24 | 3167 | |
528622fd JW |
3168 | /* Match CLASS declarations. */ |
3169 | m = gfc_match (" class ( * )"); | |
3170 | if (m == MATCH_ERROR) | |
3171 | return MATCH_ERROR; | |
3172 | else if (m == MATCH_YES) | |
3173 | { | |
8b704316 PT |
3174 | gfc_symbol *upe; |
3175 | gfc_symtree *st; | |
3176 | ts->type = BT_CLASS; | |
f5acf0f2 | 3177 | gfc_find_symbol ("STAR", gfc_current_ns, 1, &upe); |
8b704316 PT |
3178 | if (upe == NULL) |
3179 | { | |
f5acf0f2 PT |
3180 | upe = gfc_new_symbol ("STAR", gfc_current_ns); |
3181 | st = gfc_new_symtree (&gfc_current_ns->sym_root, "STAR"); | |
8b704316 PT |
3182 | st->n.sym = upe; |
3183 | gfc_set_sym_referenced (upe); | |
3184 | upe->refs++; | |
3185 | upe->ts.type = BT_VOID; | |
3186 | upe->attr.unlimited_polymorphic = 1; | |
3187 | /* This is essential to force the construction of | |
3188 | unlimited polymorphic component class containers. */ | |
3189 | upe->attr.zero_comp = 1; | |
70112e2a | 3190 | if (!gfc_add_flavor (&upe->attr, FL_DERIVED, NULL, |
524af0d6 | 3191 | &gfc_current_locus)) |
528622fd JW |
3192 | return MATCH_ERROR; |
3193 | } | |
8b704316 PT |
3194 | else |
3195 | { | |
f5acf0f2 | 3196 | st = gfc_find_symtree (gfc_current_ns->sym_root, "STAR"); |
8b704316 | 3197 | if (st == NULL) |
f5acf0f2 | 3198 | st = gfc_new_symtree (&gfc_current_ns->sym_root, "STAR"); |
8b704316 PT |
3199 | st->n.sym = upe; |
3200 | upe->refs++; | |
3201 | } | |
3202 | ts->u.derived = upe; | |
3203 | return m; | |
3204 | } | |
528622fd | 3205 | |
727e8544 JW |
3206 | m = gfc_match (" class ( %n )", name); |
3207 | if (m != MATCH_YES) | |
3208 | return m; | |
cf2b3c22 | 3209 | ts->type = BT_CLASS; |
727e8544 | 3210 | |
524af0d6 | 3211 | if (!gfc_notify_std (GFC_STD_F2003, "CLASS statement at %C")) |
e74f1cc8 | 3212 | return MATCH_ERROR; |
727e8544 | 3213 | } |
6de9cd9a | 3214 | |
1c8bcdf7 PT |
3215 | /* Defer association of the derived type until the end of the |
3216 | specification block. However, if the derived type can be | |
f5acf0f2 | 3217 | found, add it to the typespec. */ |
1c8bcdf7 | 3218 | if (gfc_matching_function) |
e2d29968 | 3219 | { |
bc21d315 | 3220 | ts->u.derived = NULL; |
1c8bcdf7 PT |
3221 | if (gfc_current_state () != COMP_INTERFACE |
3222 | && !gfc_find_symbol (name, NULL, 1, &sym) && sym) | |
c3f34952 TB |
3223 | { |
3224 | sym = gfc_find_dt_in_generic (sym); | |
3225 | ts->u.derived = sym; | |
3226 | } | |
e2d29968 PT |
3227 | return MATCH_YES; |
3228 | } | |
3229 | ||
3230 | /* Search for the name but allow the components to be defined later. If | |
3231 | type = -1, this typespec has been seen in a function declaration but | |
c3f34952 | 3232 | the type could not be accessed at that point. The actual derived type is |
eea58adb | 3233 | stored in a symtree with the first letter of the name capitalized; the |
c3f34952 TB |
3234 | symtree with the all lower-case name contains the associated |
3235 | generic function. */ | |
f6288c24 | 3236 | dt_name = gfc_dt_upper_string (name); |
1c8bcdf7 | 3237 | sym = NULL; |
c3f34952 TB |
3238 | dt_sym = NULL; |
3239 | if (ts->kind != -1) | |
6de9cd9a | 3240 | { |
c3f34952 TB |
3241 | gfc_get_ha_symbol (name, &sym); |
3242 | if (sym->generic && gfc_find_symbol (dt_name, NULL, 0, &dt_sym)) | |
3243 | { | |
c4100eae | 3244 | gfc_error ("Type name %qs at %C is ambiguous", name); |
c3f34952 TB |
3245 | return MATCH_ERROR; |
3246 | } | |
3247 | if (sym->generic && !dt_sym) | |
3248 | dt_sym = gfc_find_dt_in_generic (sym); | |
6de9cd9a | 3249 | } |
e2d29968 PT |
3250 | else if (ts->kind == -1) |
3251 | { | |
1c8bcdf7 PT |
3252 | int iface = gfc_state_stack->previous->state != COMP_INTERFACE |
3253 | || gfc_current_ns->has_import_set; | |
c3f34952 TB |
3254 | gfc_find_symbol (name, NULL, iface, &sym); |
3255 | if (sym && sym->generic && gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
f5acf0f2 | 3256 | { |
c4100eae | 3257 | gfc_error ("Type name %qs at %C is ambiguous", name); |
e2d29968 PT |
3258 | return MATCH_ERROR; |
3259 | } | |
c3f34952 TB |
3260 | if (sym && sym->generic && !dt_sym) |
3261 | dt_sym = gfc_find_dt_in_generic (sym); | |
e2d29968 | 3262 | |
1c8bcdf7 | 3263 | ts->kind = 0; |
e2d29968 PT |
3264 | if (sym == NULL) |
3265 | return MATCH_NO; | |
3266 | } | |
6de9cd9a | 3267 | |
f6288c24 | 3268 | if ((sym->attr.flavor != FL_UNKNOWN && sym->attr.flavor != FL_STRUCT |
c3f34952 TB |
3269 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.generic)) |
3270 | || sym->attr.subroutine) | |
3271 | { | |
fea70c99 MLI |
3272 | gfc_error ("Type name %qs at %C conflicts with previously declared " |
3273 | "entity at %L, which has the same name", name, | |
3274 | &sym->declared_at); | |
c3f34952 TB |
3275 | return MATCH_ERROR; |
3276 | } | |
6de9cd9a | 3277 | |
44c57c2f | 3278 | gfc_save_symbol_data (sym); |
1c8bcdf7 | 3279 | gfc_set_sym_referenced (sym); |
c3f34952 | 3280 | if (!sym->attr.generic |
524af0d6 | 3281 | && !gfc_add_generic (&sym->attr, sym->name, NULL)) |
c3f34952 TB |
3282 | return MATCH_ERROR; |
3283 | ||
3284 | if (!sym->attr.function | |
524af0d6 | 3285 | && !gfc_add_function (&sym->attr, sym->name, NULL)) |
c3f34952 TB |
3286 | return MATCH_ERROR; |
3287 | ||
3288 | if (!dt_sym) | |
3289 | { | |
3290 | gfc_interface *intr, *head; | |
3291 | ||
3292 | /* Use upper case to save the actual derived-type symbol. */ | |
3293 | gfc_get_symbol (dt_name, NULL, &dt_sym); | |
3294 | dt_sym->name = gfc_get_string (sym->name); | |
3295 | head = sym->generic; | |
3296 | intr = gfc_get_interface (); | |
3297 | intr->sym = dt_sym; | |
3298 | intr->where = gfc_current_locus; | |
3299 | intr->next = head; | |
3300 | sym->generic = intr; | |
3301 | sym->attr.if_source = IFSRC_DECL; | |
3302 | } | |
44c57c2f MM |
3303 | else |
3304 | gfc_save_symbol_data (dt_sym); | |
c3f34952 TB |
3305 | |
3306 | gfc_set_sym_referenced (dt_sym); | |
3307 | ||
f6288c24 | 3308 | if (dt_sym->attr.flavor != FL_DERIVED && dt_sym->attr.flavor != FL_STRUCT |
524af0d6 | 3309 | && !gfc_add_flavor (&dt_sym->attr, FL_DERIVED, sym->name, NULL)) |
c3f34952 TB |
3310 | return MATCH_ERROR; |
3311 | ||
3312 | ts->u.derived = dt_sym; | |
6de9cd9a DN |
3313 | |
3314 | return MATCH_YES; | |
3315 | ||
3316 | get_kind: | |
0fb56814 | 3317 | if (matched_type |
524af0d6 JB |
3318 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3319 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
3320 | return MATCH_ERROR; |
3321 | ||
6de9cd9a DN |
3322 | /* For all types except double, derived and character, look for an |
3323 | optional kind specifier. MATCH_NO is actually OK at this point. */ | |
e5ddaa24 | 3324 | if (implicit_flag == 1) |
0fb56814 TB |
3325 | { |
3326 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
3327 | return MATCH_ERROR; | |
3328 | ||
3329 | return MATCH_YES; | |
3330 | } | |
6de9cd9a | 3331 | |
0ff0dfbf TS |
3332 | if (gfc_current_form == FORM_FREE) |
3333 | { | |
0b3624f6 SK |
3334 | c = gfc_peek_ascii_char (); |
3335 | if (!gfc_is_whitespace (c) && c != '*' && c != '(' | |
636dff67 | 3336 | && c != ':' && c != ',') |
0fb56814 TB |
3337 | { |
3338 | if (matched_type && c == ')') | |
3339 | { | |
3340 | gfc_next_ascii_char (); | |
3341 | return MATCH_YES; | |
3342 | } | |
3343 | return MATCH_NO; | |
3344 | } | |
0ff0dfbf TS |
3345 | } |
3346 | ||
e2d29968 | 3347 | m = gfc_match_kind_spec (ts, false); |
6de9cd9a | 3348 | if (m == MATCH_NO && ts->type != BT_CHARACTER) |
4381322d SK |
3349 | { |
3350 | m = gfc_match_old_kind_spec (ts); | |
3351 | if (gfc_validate_kind (ts->type, ts->kind, true) == -1) | |
3352 | return MATCH_ERROR; | |
3353 | } | |
6de9cd9a | 3354 | |
0fb56814 TB |
3355 | if (matched_type && gfc_match_char (')') != MATCH_YES) |
3356 | return MATCH_ERROR; | |
3357 | ||
1c8bcdf7 PT |
3358 | /* Defer association of the KIND expression of function results |
3359 | until after USE and IMPORT statements. */ | |
3360 | if ((gfc_current_state () == COMP_NONE && gfc_error_flag_test ()) | |
3361 | || gfc_matching_function) | |
3362 | return MATCH_YES; | |
3363 | ||
6de9cd9a DN |
3364 | if (m == MATCH_NO) |
3365 | m = MATCH_YES; /* No kind specifier found. */ | |
3366 | ||
3367 | return m; | |
3368 | } | |
3369 | ||
3370 | ||
e5ddaa24 TS |
3371 | /* Match an IMPLICIT NONE statement. Actually, this statement is |
3372 | already matched in parse.c, or we would not end up here in the | |
3373 | first place. So the only thing we need to check, is if there is | |
3374 | trailing garbage. If not, the match is successful. */ | |
3375 | ||
3376 | match | |
3377 | gfc_match_implicit_none (void) | |
3378 | { | |
8b7a967e TB |
3379 | char c; |
3380 | match m; | |
3381 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
3382 | bool type = false; | |
3383 | bool external = false; | |
a6c63173 TB |
3384 | locus cur_loc = gfc_current_locus; |
3385 | ||
3386 | if (gfc_current_ns->seen_implicit_none | |
3387 | || gfc_current_ns->has_implicit_none_export) | |
3388 | { | |
3389 | gfc_error ("Duplicate IMPLICIT NONE statement at %C"); | |
3390 | return MATCH_ERROR; | |
3391 | } | |
8b7a967e TB |
3392 | |
3393 | gfc_gobble_whitespace (); | |
3394 | c = gfc_peek_ascii_char (); | |
3395 | if (c == '(') | |
3396 | { | |
3397 | (void) gfc_next_ascii_char (); | |
3398 | if (!gfc_notify_std (GFC_STD_F2015, "IMPORT NONE with spec list at %C")) | |
3399 | return MATCH_ERROR; | |
a6c63173 TB |
3400 | |
3401 | gfc_gobble_whitespace (); | |
3402 | if (gfc_peek_ascii_char () == ')') | |
8b7a967e | 3403 | { |
a6c63173 TB |
3404 | (void) gfc_next_ascii_char (); |
3405 | type = true; | |
3406 | } | |
3407 | else | |
3408 | for(;;) | |
3409 | { | |
3410 | m = gfc_match (" %n", name); | |
3411 | if (m != MATCH_YES) | |
3412 | return MATCH_ERROR; | |
8b7a967e | 3413 | |
a6c63173 TB |
3414 | if (strcmp (name, "type") == 0) |
3415 | type = true; | |
3416 | else if (strcmp (name, "external") == 0) | |
3417 | external = true; | |
3418 | else | |
3419 | return MATCH_ERROR; | |
8b7a967e | 3420 | |
a6c63173 TB |
3421 | gfc_gobble_whitespace (); |
3422 | c = gfc_next_ascii_char (); | |
3423 | if (c == ',') | |
3424 | continue; | |
3425 | if (c == ')') | |
3426 | break; | |
3427 | return MATCH_ERROR; | |
3428 | } | |
8b7a967e TB |
3429 | } |
3430 | else | |
3431 | type = true; | |
3432 | ||
3433 | if (gfc_match_eos () != MATCH_YES) | |
3434 | return MATCH_ERROR; | |
3435 | ||
a6c63173 | 3436 | gfc_set_implicit_none (type, external, &cur_loc); |
8b7a967e TB |
3437 | |
3438 | return MATCH_YES; | |
e5ddaa24 TS |
3439 | } |
3440 | ||
3441 | ||
3442 | /* Match the letter range(s) of an IMPLICIT statement. */ | |
3443 | ||
3444 | static match | |
1107b970 | 3445 | match_implicit_range (void) |
e5ddaa24 | 3446 | { |
8fc541d3 FXC |
3447 | char c, c1, c2; |
3448 | int inner; | |
e5ddaa24 TS |
3449 | locus cur_loc; |
3450 | ||
3451 | cur_loc = gfc_current_locus; | |
3452 | ||
3453 | gfc_gobble_whitespace (); | |
8fc541d3 | 3454 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
3455 | if (c != '(') |
3456 | { | |
3457 | gfc_error ("Missing character range in IMPLICIT at %C"); | |
3458 | goto bad; | |
3459 | } | |
3460 | ||
3461 | inner = 1; | |
3462 | while (inner) | |
3463 | { | |
3464 | gfc_gobble_whitespace (); | |
8fc541d3 | 3465 | c1 = gfc_next_ascii_char (); |
e5ddaa24 TS |
3466 | if (!ISALPHA (c1)) |
3467 | goto bad; | |
3468 | ||
3469 | gfc_gobble_whitespace (); | |
8fc541d3 | 3470 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
3471 | |
3472 | switch (c) | |
3473 | { | |
3474 | case ')': | |
66e4ab31 | 3475 | inner = 0; /* Fall through. */ |
e5ddaa24 TS |
3476 | |
3477 | case ',': | |
3478 | c2 = c1; | |
3479 | break; | |
3480 | ||
3481 | case '-': | |
3482 | gfc_gobble_whitespace (); | |
8fc541d3 | 3483 | c2 = gfc_next_ascii_char (); |
e5ddaa24 TS |
3484 | if (!ISALPHA (c2)) |
3485 | goto bad; | |
3486 | ||
3487 | gfc_gobble_whitespace (); | |
8fc541d3 | 3488 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
3489 | |
3490 | if ((c != ',') && (c != ')')) | |
3491 | goto bad; | |
3492 | if (c == ')') | |
3493 | inner = 0; | |
3494 | ||
3495 | break; | |
3496 | ||
3497 | default: | |
3498 | goto bad; | |
3499 | } | |
3500 | ||
3501 | if (c1 > c2) | |
3502 | { | |
3503 | gfc_error ("Letters must be in alphabetic order in " | |
3504 | "IMPLICIT statement at %C"); | |
3505 | goto bad; | |
3506 | } | |
3507 | ||
3508 | /* See if we can add the newly matched range to the pending | |
636dff67 SK |
3509 | implicits from this IMPLICIT statement. We do not check for |
3510 | conflicts with whatever earlier IMPLICIT statements may have | |
3511 | set. This is done when we've successfully finished matching | |
3512 | the current one. */ | |
524af0d6 | 3513 | if (!gfc_add_new_implicit_range (c1, c2)) |
e5ddaa24 TS |
3514 | goto bad; |
3515 | } | |
3516 | ||
3517 | return MATCH_YES; | |
3518 | ||
3519 | bad: | |
3520 | gfc_syntax_error (ST_IMPLICIT); | |
3521 | ||
3522 | gfc_current_locus = cur_loc; | |
3523 | return MATCH_ERROR; | |
3524 | } | |
3525 | ||
3526 | ||
3527 | /* Match an IMPLICIT statement, storing the types for | |
3528 | gfc_set_implicit() if the statement is accepted by the parser. | |
3529 | There is a strange looking, but legal syntactic construction | |
3530 | possible. It looks like: | |
3531 | ||
3532 | IMPLICIT INTEGER (a-b) (c-d) | |
3533 | ||
3534 | This is legal if "a-b" is a constant expression that happens to | |
3535 | equal one of the legal kinds for integers. The real problem | |
3536 | happens with an implicit specification that looks like: | |
3537 | ||
3538 | IMPLICIT INTEGER (a-b) | |
3539 | ||
3540 | In this case, a typespec matcher that is "greedy" (as most of the | |
3541 | matchers are) gobbles the character range as a kindspec, leaving | |
3542 | nothing left. We therefore have to go a bit more slowly in the | |
3543 | matching process by inhibiting the kindspec checking during | |
3544 | typespec matching and checking for a kind later. */ | |
3545 | ||
3546 | match | |
3547 | gfc_match_implicit (void) | |
3548 | { | |
3549 | gfc_typespec ts; | |
3550 | locus cur_loc; | |
8fc541d3 | 3551 | char c; |
e5ddaa24 TS |
3552 | match m; |
3553 | ||
8b7a967e TB |
3554 | if (gfc_current_ns->seen_implicit_none) |
3555 | { | |
3556 | gfc_error ("IMPLICIT statement at %C following an IMPLICIT NONE (type) " | |
3557 | "statement"); | |
3558 | return MATCH_ERROR; | |
3559 | } | |
3560 | ||
44000dbb JD |
3561 | gfc_clear_ts (&ts); |
3562 | ||
e5ddaa24 TS |
3563 | /* We don't allow empty implicit statements. */ |
3564 | if (gfc_match_eos () == MATCH_YES) | |
3565 | { | |
3566 | gfc_error ("Empty IMPLICIT statement at %C"); | |
3567 | return MATCH_ERROR; | |
3568 | } | |
3569 | ||
e5ddaa24 TS |
3570 | do |
3571 | { | |
1107b970 PB |
3572 | /* First cleanup. */ |
3573 | gfc_clear_new_implicit (); | |
3574 | ||
e5ddaa24 | 3575 | /* A basic type is mandatory here. */ |
e74f1cc8 | 3576 | m = gfc_match_decl_type_spec (&ts, 1); |
e5ddaa24 TS |
3577 | if (m == MATCH_ERROR) |
3578 | goto error; | |
3579 | if (m == MATCH_NO) | |
3580 | goto syntax; | |
3581 | ||
3582 | cur_loc = gfc_current_locus; | |
1107b970 | 3583 | m = match_implicit_range (); |
e5ddaa24 TS |
3584 | |
3585 | if (m == MATCH_YES) | |
3586 | { | |
1107b970 | 3587 | /* We may have <TYPE> (<RANGE>). */ |
e5ddaa24 | 3588 | gfc_gobble_whitespace (); |
a6c63173 TB |
3589 | c = gfc_peek_ascii_char (); |
3590 | if (c == ',' || c == '\n' || c == ';' || c == '!') | |
1107b970 PB |
3591 | { |
3592 | /* Check for CHARACTER with no length parameter. */ | |
bc21d315 | 3593 | if (ts.type == BT_CHARACTER && !ts.u.cl) |
1107b970 | 3594 | { |
9d64df18 | 3595 | ts.kind = gfc_default_character_kind; |
b76e28c6 | 3596 | ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
b7e75771 JD |
3597 | ts.u.cl->length = gfc_get_int_expr (gfc_default_integer_kind, |
3598 | NULL, 1); | |
1107b970 PB |
3599 | } |
3600 | ||
3601 | /* Record the Successful match. */ | |
524af0d6 | 3602 | if (!gfc_merge_new_implicit (&ts)) |
1107b970 | 3603 | return MATCH_ERROR; |
a6c63173 TB |
3604 | if (c == ',') |
3605 | c = gfc_next_ascii_char (); | |
3606 | else if (gfc_match_eos () == MATCH_ERROR) | |
3607 | goto error; | |
1107b970 PB |
3608 | continue; |
3609 | } | |
e5ddaa24 TS |
3610 | |
3611 | gfc_current_locus = cur_loc; | |
3612 | } | |
3613 | ||
1107b970 PB |
3614 | /* Discard the (incorrectly) matched range. */ |
3615 | gfc_clear_new_implicit (); | |
3616 | ||
3617 | /* Last chance -- check <TYPE> <SELECTOR> (<RANGE>). */ | |
3618 | if (ts.type == BT_CHARACTER) | |
8234e5e0 | 3619 | m = gfc_match_char_spec (&ts); |
1107b970 | 3620 | else |
e5ddaa24 | 3621 | { |
e2d29968 | 3622 | m = gfc_match_kind_spec (&ts, false); |
e5ddaa24 | 3623 | if (m == MATCH_NO) |
1107b970 PB |
3624 | { |
3625 | m = gfc_match_old_kind_spec (&ts); | |
3626 | if (m == MATCH_ERROR) | |
3627 | goto error; | |
3628 | if (m == MATCH_NO) | |
3629 | goto syntax; | |
3630 | } | |
e5ddaa24 | 3631 | } |
1107b970 PB |
3632 | if (m == MATCH_ERROR) |
3633 | goto error; | |
e5ddaa24 | 3634 | |
1107b970 | 3635 | m = match_implicit_range (); |
e5ddaa24 TS |
3636 | if (m == MATCH_ERROR) |
3637 | goto error; | |
3638 | if (m == MATCH_NO) | |
3639 | goto syntax; | |
3640 | ||
3641 | gfc_gobble_whitespace (); | |
8fc541d3 | 3642 | c = gfc_next_ascii_char (); |
a6c63173 | 3643 | if (c != ',' && gfc_match_eos () != MATCH_YES) |
e5ddaa24 TS |
3644 | goto syntax; |
3645 | ||
524af0d6 | 3646 | if (!gfc_merge_new_implicit (&ts)) |
1107b970 | 3647 | return MATCH_ERROR; |
e5ddaa24 TS |
3648 | } |
3649 | while (c == ','); | |
3650 | ||
1107b970 | 3651 | return MATCH_YES; |
e5ddaa24 TS |
3652 | |
3653 | syntax: | |
3654 | gfc_syntax_error (ST_IMPLICIT); | |
3655 | ||
3656 | error: | |
3657 | return MATCH_ERROR; | |
3658 | } | |
3659 | ||
66e4ab31 | 3660 | |
8998be20 TB |
3661 | match |
3662 | gfc_match_import (void) | |
3663 | { | |
3664 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
3665 | match m; | |
3666 | gfc_symbol *sym; | |
3667 | gfc_symtree *st; | |
3668 | ||
66e4ab31 SK |
3669 | if (gfc_current_ns->proc_name == NULL |
3670 | || gfc_current_ns->proc_name->attr.if_source != IFSRC_IFBODY) | |
8998be20 TB |
3671 | { |
3672 | gfc_error ("IMPORT statement at %C only permitted in " | |
3673 | "an INTERFACE body"); | |
3674 | return MATCH_ERROR; | |
3675 | } | |
3676 | ||
4668d6f9 PT |
3677 | if (gfc_current_ns->proc_name->attr.module_procedure) |
3678 | { | |
3679 | gfc_error ("F2008: C1210 IMPORT statement at %C is not permitted " | |
3680 | "in a module procedure interface body"); | |
3681 | return MATCH_ERROR; | |
3682 | } | |
3683 | ||
524af0d6 | 3684 | if (!gfc_notify_std (GFC_STD_F2003, "IMPORT statement at %C")) |
8998be20 TB |
3685 | return MATCH_ERROR; |
3686 | ||
3687 | if (gfc_match_eos () == MATCH_YES) | |
3688 | { | |
3689 | /* All host variables should be imported. */ | |
3690 | gfc_current_ns->has_import_set = 1; | |
3691 | return MATCH_YES; | |
3692 | } | |
3693 | ||
3694 | if (gfc_match (" ::") == MATCH_YES) | |
3695 | { | |
3696 | if (gfc_match_eos () == MATCH_YES) | |
636dff67 SK |
3697 | { |
3698 | gfc_error ("Expecting list of named entities at %C"); | |
3699 | return MATCH_ERROR; | |
3700 | } | |
8998be20 TB |
3701 | } |
3702 | ||
3703 | for(;;) | |
3704 | { | |
2e8d9212 | 3705 | sym = NULL; |
8998be20 TB |
3706 | m = gfc_match (" %n", name); |
3707 | switch (m) | |
3708 | { | |
3709 | case MATCH_YES: | |
36d3fb4c | 3710 | if (gfc_current_ns->parent != NULL |
66e4ab31 | 3711 | && gfc_find_symbol (name, gfc_current_ns->parent, 1, &sym)) |
36d3fb4c | 3712 | { |
c4100eae | 3713 | gfc_error ("Type name %qs at %C is ambiguous", name); |
36d3fb4c PT |
3714 | return MATCH_ERROR; |
3715 | } | |
4e2cf5f5 | 3716 | else if (!sym && gfc_current_ns->proc_name->ns->parent != NULL |
66e4ab31 SK |
3717 | && gfc_find_symbol (name, |
3718 | gfc_current_ns->proc_name->ns->parent, | |
3719 | 1, &sym)) | |
636dff67 | 3720 | { |
c4100eae | 3721 | gfc_error ("Type name %qs at %C is ambiguous", name); |
636dff67 SK |
3722 | return MATCH_ERROR; |
3723 | } | |
3724 | ||
3725 | if (sym == NULL) | |
3726 | { | |
c4100eae | 3727 | gfc_error ("Cannot IMPORT %qs from host scoping unit " |
636dff67 SK |
3728 | "at %C - does not exist.", name); |
3729 | return MATCH_ERROR; | |
3730 | } | |
3731 | ||
dd8b9dde | 3732 | if (gfc_find_symtree (gfc_current_ns->sym_root, name)) |
636dff67 | 3733 | { |
db30e21c | 3734 | gfc_warning (0, "%qs is already IMPORTed from host scoping unit " |
48749dbc | 3735 | "at %C", name); |
636dff67 SK |
3736 | goto next_item; |
3737 | } | |
3738 | ||
dd8b9dde | 3739 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); |
636dff67 SK |
3740 | st->n.sym = sym; |
3741 | sym->refs++; | |
5a8af0b4 | 3742 | sym->attr.imported = 1; |
8998be20 | 3743 | |
c3f34952 TB |
3744 | if (sym->attr.generic && (sym = gfc_find_dt_in_generic (sym))) |
3745 | { | |
3746 | /* The actual derived type is stored in a symtree with the first | |
eea58adb | 3747 | letter of the name capitalized; the symtree with the all |
1cc0e193 | 3748 | lower-case name contains the associated generic function. */ |
c3f34952 | 3749 | st = gfc_new_symtree (&gfc_current_ns->sym_root, |
f6288c24 | 3750 | gfc_dt_upper_string (name)); |
c3f34952 TB |
3751 | st->n.sym = sym; |
3752 | sym->refs++; | |
3753 | sym->attr.imported = 1; | |
3754 | } | |
3755 | ||
8998be20 TB |
3756 | goto next_item; |
3757 | ||
3758 | case MATCH_NO: | |
3759 | break; | |
3760 | ||
3761 | case MATCH_ERROR: | |
3762 | return MATCH_ERROR; | |
3763 | } | |
3764 | ||
3765 | next_item: | |
3766 | if (gfc_match_eos () == MATCH_YES) | |
3767 | break; | |
3768 | if (gfc_match_char (',') != MATCH_YES) | |
3769 | goto syntax; | |
3770 | } | |
3771 | ||
3772 | return MATCH_YES; | |
3773 | ||
3774 | syntax: | |
3775 | gfc_error ("Syntax error in IMPORT statement at %C"); | |
3776 | return MATCH_ERROR; | |
3777 | } | |
e5ddaa24 | 3778 | |
66e4ab31 | 3779 | |
f2449db4 RS |
3780 | /* A minimal implementation of gfc_match without whitespace, escape |
3781 | characters or variable arguments. Returns true if the next | |
3782 | characters match the TARGET template exactly. */ | |
3783 | ||
3784 | static bool | |
3785 | match_string_p (const char *target) | |
3786 | { | |
3787 | const char *p; | |
3788 | ||
3789 | for (p = target; *p; p++) | |
8fc541d3 | 3790 | if ((char) gfc_next_ascii_char () != *p) |
f2449db4 RS |
3791 | return false; |
3792 | return true; | |
3793 | } | |
3794 | ||
6de9cd9a DN |
3795 | /* Matches an attribute specification including array specs. If |
3796 | successful, leaves the variables current_attr and current_as | |
3797 | holding the specification. Also sets the colon_seen variable for | |
3798 | later use by matchers associated with initializations. | |
3799 | ||
3800 | This subroutine is a little tricky in the sense that we don't know | |
3801 | if we really have an attr-spec until we hit the double colon. | |
3802 | Until that time, we can only return MATCH_NO. This forces us to | |
3803 | check for duplicate specification at this level. */ | |
3804 | ||
3805 | static match | |
3806 | match_attr_spec (void) | |
3807 | { | |
6de9cd9a | 3808 | /* Modifiers that can exist in a type statement. */ |
d75d9546 | 3809 | enum |
6de9cd9a DN |
3810 | { GFC_DECL_BEGIN = 0, |
3811 | DECL_ALLOCATABLE = GFC_DECL_BEGIN, DECL_DIMENSION, DECL_EXTERNAL, | |
3812 | DECL_IN, DECL_OUT, DECL_INOUT, DECL_INTRINSIC, DECL_OPTIONAL, | |
ee7e677f | 3813 | DECL_PARAMETER, DECL_POINTER, DECL_PROTECTED, DECL_PRIVATE, |
34d567d1 | 3814 | DECL_STATIC, DECL_AUTOMATIC, |
ee7e677f | 3815 | DECL_PUBLIC, DECL_SAVE, DECL_TARGET, DECL_VALUE, DECL_VOLATILE, |
fe4e525c TB |
3816 | DECL_IS_BIND_C, DECL_CODIMENSION, DECL_ASYNCHRONOUS, DECL_CONTIGUOUS, |
3817 | DECL_NONE, GFC_DECL_END /* Sentinel */ | |
d75d9546 | 3818 | }; |
6de9cd9a DN |
3819 | |
3820 | /* GFC_DECL_END is the sentinel, index starts at 0. */ | |
3821 | #define NUM_DECL GFC_DECL_END | |
3822 | ||
6de9cd9a DN |
3823 | locus start, seen_at[NUM_DECL]; |
3824 | int seen[NUM_DECL]; | |
09639a83 | 3825 | unsigned int d; |
6de9cd9a DN |
3826 | const char *attr; |
3827 | match m; | |
524af0d6 | 3828 | bool t; |
6de9cd9a DN |
3829 | |
3830 | gfc_clear_attr (¤t_attr); | |
63645982 | 3831 | start = gfc_current_locus; |
6de9cd9a DN |
3832 | |
3833 | current_as = NULL; | |
3834 | colon_seen = 0; | |
3835 | ||
3836 | /* See if we get all of the keywords up to the final double colon. */ | |
3837 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3838 | seen[d] = 0; | |
3839 | ||
3840 | for (;;) | |
3841 | { | |
8fc541d3 | 3842 | char ch; |
a8b3b0b6 | 3843 | |
f2449db4 RS |
3844 | d = DECL_NONE; |
3845 | gfc_gobble_whitespace (); | |
3846 | ||
8fc541d3 | 3847 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
3848 | if (ch == ':') |
3849 | { | |
3850 | /* This is the successful exit condition for the loop. */ | |
8fc541d3 | 3851 | if (gfc_next_ascii_char () == ':') |
f2449db4 RS |
3852 | break; |
3853 | } | |
3854 | else if (ch == ',') | |
a8b3b0b6 | 3855 | { |
a8b3b0b6 | 3856 | gfc_gobble_whitespace (); |
8fc541d3 | 3857 | switch (gfc_peek_ascii_char ()) |
a8b3b0b6 | 3858 | { |
f2449db4 | 3859 | case 'a': |
1eee5628 TB |
3860 | gfc_next_ascii_char (); |
3861 | switch (gfc_next_ascii_char ()) | |
3862 | { | |
3863 | case 'l': | |
3864 | if (match_string_p ("locatable")) | |
3865 | { | |
3866 | /* Matched "allocatable". */ | |
3867 | d = DECL_ALLOCATABLE; | |
3868 | } | |
3869 | break; | |
3870 | ||
3871 | case 's': | |
3872 | if (match_string_p ("ynchronous")) | |
3873 | { | |
3874 | /* Matched "asynchronous". */ | |
3875 | d = DECL_ASYNCHRONOUS; | |
3876 | } | |
3877 | break; | |
34d567d1 FR |
3878 | |
3879 | case 'u': | |
3880 | if (match_string_p ("tomatic")) | |
3881 | { | |
3882 | /* Matched "automatic". */ | |
3883 | d = DECL_AUTOMATIC; | |
3884 | } | |
3885 | break; | |
1eee5628 | 3886 | } |
fe4e525c | 3887 | break; |
f2449db4 RS |
3888 | |
3889 | case 'b': | |
a8b3b0b6 | 3890 | /* Try and match the bind(c). */ |
1eabf70a | 3891 | m = gfc_match_bind_c (NULL, true); |
129d15a3 | 3892 | if (m == MATCH_YES) |
a8b3b0b6 | 3893 | d = DECL_IS_BIND_C; |
129d15a3 JW |
3894 | else if (m == MATCH_ERROR) |
3895 | goto cleanup; | |
f2449db4 RS |
3896 | break; |
3897 | ||
be59db2d | 3898 | case 'c': |
fe4e525c TB |
3899 | gfc_next_ascii_char (); |
3900 | if ('o' != gfc_next_ascii_char ()) | |
3901 | break; | |
3902 | switch (gfc_next_ascii_char ()) | |
3903 | { | |
3904 | case 'd': | |
3905 | if (match_string_p ("imension")) | |
3906 | { | |
3907 | d = DECL_CODIMENSION; | |
3908 | break; | |
3909 | } | |
191816a3 | 3910 | /* FALLTHRU */ |
fe4e525c TB |
3911 | case 'n': |
3912 | if (match_string_p ("tiguous")) | |
3913 | { | |
3914 | d = DECL_CONTIGUOUS; | |
3915 | break; | |
3916 | } | |
3917 | } | |
be59db2d TB |
3918 | break; |
3919 | ||
f2449db4 RS |
3920 | case 'd': |
3921 | if (match_string_p ("dimension")) | |
3922 | d = DECL_DIMENSION; | |
3923 | break; | |
3924 | ||
3925 | case 'e': | |
3926 | if (match_string_p ("external")) | |
3927 | d = DECL_EXTERNAL; | |
3928 | break; | |
3929 | ||
3930 | case 'i': | |
3931 | if (match_string_p ("int")) | |
3932 | { | |
8fc541d3 | 3933 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
3934 | if (ch == 'e') |
3935 | { | |
3936 | if (match_string_p ("nt")) | |
3937 | { | |
3938 | /* Matched "intent". */ | |
3939 | /* TODO: Call match_intent_spec from here. */ | |
3940 | if (gfc_match (" ( in out )") == MATCH_YES) | |
3941 | d = DECL_INOUT; | |
3942 | else if (gfc_match (" ( in )") == MATCH_YES) | |
3943 | d = DECL_IN; | |
3944 | else if (gfc_match (" ( out )") == MATCH_YES) | |
3945 | d = DECL_OUT; | |
3946 | } | |
3947 | } | |
3948 | else if (ch == 'r') | |
3949 | { | |
3950 | if (match_string_p ("insic")) | |
3951 | { | |
3952 | /* Matched "intrinsic". */ | |
3953 | d = DECL_INTRINSIC; | |
3954 | } | |
3955 | } | |
3956 | } | |
3957 | break; | |
3958 | ||
3959 | case 'o': | |
3960 | if (match_string_p ("optional")) | |
3961 | d = DECL_OPTIONAL; | |
3962 | break; | |
3963 | ||
3964 | case 'p': | |
8fc541d3 FXC |
3965 | gfc_next_ascii_char (); |
3966 | switch (gfc_next_ascii_char ()) | |
f2449db4 RS |
3967 | { |
3968 | case 'a': | |
3969 | if (match_string_p ("rameter")) | |
3970 | { | |
3971 | /* Matched "parameter". */ | |
3972 | d = DECL_PARAMETER; | |
3973 | } | |
3974 | break; | |
3975 | ||
3976 | case 'o': | |
3977 | if (match_string_p ("inter")) | |
3978 | { | |
3979 | /* Matched "pointer". */ | |
3980 | d = DECL_POINTER; | |
3981 | } | |
3982 | break; | |
3983 | ||
3984 | case 'r': | |
8fc541d3 | 3985 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
3986 | if (ch == 'i') |
3987 | { | |
3988 | if (match_string_p ("vate")) | |
3989 | { | |
3990 | /* Matched "private". */ | |
3991 | d = DECL_PRIVATE; | |
3992 | } | |
3993 | } | |
3994 | else if (ch == 'o') | |
3995 | { | |
3996 | if (match_string_p ("tected")) | |
3997 | { | |
3998 | /* Matched "protected". */ | |
3999 | d = DECL_PROTECTED; | |
4000 | } | |
4001 | } | |
4002 | break; | |
4003 | ||
4004 | case 'u': | |
4005 | if (match_string_p ("blic")) | |
4006 | { | |
4007 | /* Matched "public". */ | |
4008 | d = DECL_PUBLIC; | |
4009 | } | |
4010 | break; | |
4011 | } | |
4012 | break; | |
4013 | ||
4014 | case 's': | |
34d567d1 FR |
4015 | gfc_next_ascii_char (); |
4016 | switch (gfc_next_ascii_char ()) | |
4017 | { | |
4018 | case 'a': | |
4019 | if (match_string_p ("ve")) | |
4020 | { | |
4021 | /* Matched "save". */ | |
4022 | d = DECL_SAVE; | |
4023 | } | |
4024 | break; | |
4025 | ||
4026 | case 't': | |
4027 | if (match_string_p ("atic")) | |
4028 | { | |
4029 | /* Matched "static". */ | |
4030 | d = DECL_STATIC; | |
4031 | } | |
4032 | break; | |
4033 | } | |
f2449db4 RS |
4034 | break; |
4035 | ||
4036 | case 't': | |
4037 | if (match_string_p ("target")) | |
4038 | d = DECL_TARGET; | |
4039 | break; | |
4040 | ||
4041 | case 'v': | |
8fc541d3 FXC |
4042 | gfc_next_ascii_char (); |
4043 | ch = gfc_next_ascii_char (); | |
f2449db4 RS |
4044 | if (ch == 'a') |
4045 | { | |
4046 | if (match_string_p ("lue")) | |
4047 | { | |
4048 | /* Matched "value". */ | |
4049 | d = DECL_VALUE; | |
4050 | } | |
4051 | } | |
4052 | else if (ch == 'o') | |
4053 | { | |
4054 | if (match_string_p ("latile")) | |
4055 | { | |
4056 | /* Matched "volatile". */ | |
4057 | d = DECL_VOLATILE; | |
4058 | } | |
4059 | } | |
4060 | break; | |
a8b3b0b6 CR |
4061 | } |
4062 | } | |
d468bcdb | 4063 | |
f2449db4 RS |
4064 | /* No double colon and no recognizable decl_type, so assume that |
4065 | we've been looking at something else the whole time. */ | |
4066 | if (d == DECL_NONE) | |
4067 | { | |
4068 | m = MATCH_NO; | |
4069 | goto cleanup; | |
4070 | } | |
d51347f9 | 4071 | |
acb388a0 JD |
4072 | /* Check to make sure any parens are paired up correctly. */ |
4073 | if (gfc_match_parens () == MATCH_ERROR) | |
4074 | { | |
4075 | m = MATCH_ERROR; | |
4076 | goto cleanup; | |
4077 | } | |
4078 | ||
6de9cd9a | 4079 | seen[d]++; |
63645982 | 4080 | seen_at[d] = gfc_current_locus; |
6de9cd9a | 4081 | |
d3a9eea2 | 4082 | if (d == DECL_DIMENSION || d == DECL_CODIMENSION) |
6de9cd9a | 4083 | { |
d3a9eea2 | 4084 | gfc_array_spec *as = NULL; |
6de9cd9a | 4085 | |
d3a9eea2 TB |
4086 | m = gfc_match_array_spec (&as, d == DECL_DIMENSION, |
4087 | d == DECL_CODIMENSION); | |
4088 | ||
4089 | if (current_as == NULL) | |
4090 | current_as = as; | |
4091 | else if (m == MATCH_YES) | |
6de9cd9a | 4092 | { |
524af0d6 | 4093 | if (!merge_array_spec (as, current_as, false)) |
63fbf586 | 4094 | m = MATCH_ERROR; |
cede9502 | 4095 | free (as); |
6de9cd9a DN |
4096 | } |
4097 | ||
be59db2d TB |
4098 | if (m == MATCH_NO) |
4099 | { | |
d3a9eea2 TB |
4100 | if (d == DECL_CODIMENSION) |
4101 | gfc_error ("Missing codimension specification at %C"); | |
4102 | else | |
4103 | gfc_error ("Missing dimension specification at %C"); | |
be59db2d TB |
4104 | m = MATCH_ERROR; |
4105 | } | |
4106 | ||
4107 | if (m == MATCH_ERROR) | |
4108 | goto cleanup; | |
4109 | } | |
6de9cd9a DN |
4110 | } |
4111 | ||
6de9cd9a DN |
4112 | /* Since we've seen a double colon, we have to be looking at an |
4113 | attr-spec. This means that we can now issue errors. */ | |
4114 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
4115 | if (seen[d] > 1) | |
4116 | { | |
4117 | switch (d) | |
4118 | { | |
4119 | case DECL_ALLOCATABLE: | |
4120 | attr = "ALLOCATABLE"; | |
4121 | break; | |
1eee5628 TB |
4122 | case DECL_ASYNCHRONOUS: |
4123 | attr = "ASYNCHRONOUS"; | |
4124 | break; | |
be59db2d TB |
4125 | case DECL_CODIMENSION: |
4126 | attr = "CODIMENSION"; | |
4127 | break; | |
fe4e525c TB |
4128 | case DECL_CONTIGUOUS: |
4129 | attr = "CONTIGUOUS"; | |
4130 | break; | |
6de9cd9a DN |
4131 | case DECL_DIMENSION: |
4132 | attr = "DIMENSION"; | |
4133 | break; | |
4134 | case DECL_EXTERNAL: | |
4135 | attr = "EXTERNAL"; | |
4136 | break; | |
4137 | case DECL_IN: | |
4138 | attr = "INTENT (IN)"; | |
4139 | break; | |
4140 | case DECL_OUT: | |
4141 | attr = "INTENT (OUT)"; | |
4142 | break; | |
4143 | case DECL_INOUT: | |
4144 | attr = "INTENT (IN OUT)"; | |
4145 | break; | |
4146 | case DECL_INTRINSIC: | |
4147 | attr = "INTRINSIC"; | |
4148 | break; | |
4149 | case DECL_OPTIONAL: | |
4150 | attr = "OPTIONAL"; | |
4151 | break; | |
4152 | case DECL_PARAMETER: | |
4153 | attr = "PARAMETER"; | |
4154 | break; | |
4155 | case DECL_POINTER: | |
4156 | attr = "POINTER"; | |
4157 | break; | |
ee7e677f TB |
4158 | case DECL_PROTECTED: |
4159 | attr = "PROTECTED"; | |
4160 | break; | |
6de9cd9a DN |
4161 | case DECL_PRIVATE: |
4162 | attr = "PRIVATE"; | |
4163 | break; | |
4164 | case DECL_PUBLIC: | |
4165 | attr = "PUBLIC"; | |
4166 | break; | |
4167 | case DECL_SAVE: | |
4168 | attr = "SAVE"; | |
4169 | break; | |
34d567d1 FR |
4170 | case DECL_STATIC: |
4171 | attr = "STATIC"; | |
4172 | break; | |
4173 | case DECL_AUTOMATIC: | |
4174 | attr = "AUTOMATIC"; | |
4175 | break; | |
6de9cd9a DN |
4176 | case DECL_TARGET: |
4177 | attr = "TARGET"; | |
4178 | break; | |
a8b3b0b6 CR |
4179 | case DECL_IS_BIND_C: |
4180 | attr = "IS_BIND_C"; | |
4181 | break; | |
4182 | case DECL_VALUE: | |
4183 | attr = "VALUE"; | |
4184 | break; | |
775e6c3a TB |
4185 | case DECL_VOLATILE: |
4186 | attr = "VOLATILE"; | |
4187 | break; | |
6de9cd9a | 4188 | default: |
66e4ab31 | 4189 | attr = NULL; /* This shouldn't happen. */ |
6de9cd9a DN |
4190 | } |
4191 | ||
4192 | gfc_error ("Duplicate %s attribute at %L", attr, &seen_at[d]); | |
4193 | m = MATCH_ERROR; | |
4194 | goto cleanup; | |
4195 | } | |
4196 | ||
4197 | /* Now that we've dealt with duplicate attributes, add the attributes | |
4198 | to the current attribute. */ | |
4199 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
4200 | { | |
4201 | if (seen[d] == 0) | |
4202 | continue; | |
4203 | ||
34d567d1 FR |
4204 | if ((d == DECL_STATIC || d == DECL_AUTOMATIC) |
4205 | && !flag_dec_static) | |
4206 | { | |
4207 | gfc_error ("%s at %L is a DEC extension, enable with -fdec-static", | |
4208 | d == DECL_STATIC ? "STATIC" : "AUTOMATIC", &seen_at[d]); | |
4209 | m = MATCH_ERROR; | |
4210 | goto cleanup; | |
4211 | } | |
4212 | /* Allow SAVE with STATIC, but don't complain. */ | |
4213 | if (d == DECL_STATIC && seen[DECL_SAVE]) | |
4214 | continue; | |
4215 | ||
6de9cd9a | 4216 | if (gfc_current_state () == COMP_DERIVED |
be59db2d TB |
4217 | && d != DECL_DIMENSION && d != DECL_CODIMENSION |
4218 | && d != DECL_POINTER && d != DECL_PRIVATE | |
fe4e525c | 4219 | && d != DECL_PUBLIC && d != DECL_CONTIGUOUS && d != DECL_NONE) |
6de9cd9a | 4220 | { |
5046aff5 PT |
4221 | if (d == DECL_ALLOCATABLE) |
4222 | { | |
524af0d6 JB |
4223 | if (!gfc_notify_std (GFC_STD_F2003, "ALLOCATABLE " |
4224 | "attribute at %C in a TYPE definition")) | |
5046aff5 PT |
4225 | { |
4226 | m = MATCH_ERROR; | |
4227 | goto cleanup; | |
4228 | } | |
636dff67 SK |
4229 | } |
4230 | else | |
5046aff5 PT |
4231 | { |
4232 | gfc_error ("Attribute at %L is not allowed in a TYPE definition", | |
d51347f9 | 4233 | &seen_at[d]); |
5046aff5 PT |
4234 | m = MATCH_ERROR; |
4235 | goto cleanup; | |
4236 | } | |
6de9cd9a DN |
4237 | } |
4238 | ||
4213f93b | 4239 | if ((d == DECL_PRIVATE || d == DECL_PUBLIC) |
636dff67 | 4240 | && gfc_current_state () != COMP_MODULE) |
4213f93b PT |
4241 | { |
4242 | if (d == DECL_PRIVATE) | |
4243 | attr = "PRIVATE"; | |
4244 | else | |
4245 | attr = "PUBLIC"; | |
d51347f9 TB |
4246 | if (gfc_current_state () == COMP_DERIVED |
4247 | && gfc_state_stack->previous | |
4248 | && gfc_state_stack->previous->state == COMP_MODULE) | |
4249 | { | |
524af0d6 | 4250 | if (!gfc_notify_std (GFC_STD_F2003, "Attribute %s " |
70112e2a | 4251 | "at %L in a TYPE definition", attr, |
524af0d6 | 4252 | &seen_at[d])) |
d51347f9 TB |
4253 | { |
4254 | m = MATCH_ERROR; | |
4255 | goto cleanup; | |
4256 | } | |
4257 | } | |
4258 | else | |
4259 | { | |
4260 | gfc_error ("%s attribute at %L is not allowed outside of the " | |
4261 | "specification part of a module", attr, &seen_at[d]); | |
4262 | m = MATCH_ERROR; | |
4263 | goto cleanup; | |
4264 | } | |
4213f93b PT |
4265 | } |
4266 | ||
6de9cd9a DN |
4267 | switch (d) |
4268 | { | |
4269 | case DECL_ALLOCATABLE: | |
4270 | t = gfc_add_allocatable (¤t_attr, &seen_at[d]); | |
4271 | break; | |
4272 | ||
1eee5628 | 4273 | case DECL_ASYNCHRONOUS: |
524af0d6 JB |
4274 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS attribute at %C")) |
4275 | t = false; | |
1eee5628 TB |
4276 | else |
4277 | t = gfc_add_asynchronous (¤t_attr, NULL, &seen_at[d]); | |
4278 | break; | |
4279 | ||
be59db2d TB |
4280 | case DECL_CODIMENSION: |
4281 | t = gfc_add_codimension (¤t_attr, NULL, &seen_at[d]); | |
4282 | break; | |
4283 | ||
fe4e525c | 4284 | case DECL_CONTIGUOUS: |
524af0d6 JB |
4285 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS attribute at %C")) |
4286 | t = false; | |
fe4e525c TB |
4287 | else |
4288 | t = gfc_add_contiguous (¤t_attr, NULL, &seen_at[d]); | |
4289 | break; | |
4290 | ||
6de9cd9a | 4291 | case DECL_DIMENSION: |
231b2fcc | 4292 | t = gfc_add_dimension (¤t_attr, NULL, &seen_at[d]); |
6de9cd9a DN |
4293 | break; |
4294 | ||
4295 | case DECL_EXTERNAL: | |
4296 | t = gfc_add_external (¤t_attr, &seen_at[d]); | |
4297 | break; | |
4298 | ||
4299 | case DECL_IN: | |
4300 | t = gfc_add_intent (¤t_attr, INTENT_IN, &seen_at[d]); | |
4301 | break; | |
4302 | ||
4303 | case DECL_OUT: | |
4304 | t = gfc_add_intent (¤t_attr, INTENT_OUT, &seen_at[d]); | |
4305 | break; | |
4306 | ||
4307 | case DECL_INOUT: | |
4308 | t = gfc_add_intent (¤t_attr, INTENT_INOUT, &seen_at[d]); | |
4309 | break; | |
4310 | ||
4311 | case DECL_INTRINSIC: | |
4312 | t = gfc_add_intrinsic (¤t_attr, &seen_at[d]); | |
4313 | break; | |
4314 | ||
4315 | case DECL_OPTIONAL: | |
4316 | t = gfc_add_optional (¤t_attr, &seen_at[d]); | |
4317 | break; | |
4318 | ||
4319 | case DECL_PARAMETER: | |
231b2fcc | 4320 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, &seen_at[d]); |
6de9cd9a DN |
4321 | break; |
4322 | ||
4323 | case DECL_POINTER: | |
4324 | t = gfc_add_pointer (¤t_attr, &seen_at[d]); | |
4325 | break; | |
4326 | ||
ee7e677f | 4327 | case DECL_PROTECTED: |
721be0f4 SK |
4328 | if (gfc_current_state () != COMP_MODULE |
4329 | || (gfc_current_ns->proc_name | |
4330 | && gfc_current_ns->proc_name->attr.flavor != FL_MODULE)) | |
ee7e677f TB |
4331 | { |
4332 | gfc_error ("PROTECTED at %C only allowed in specification " | |
4333 | "part of a module"); | |
524af0d6 | 4334 | t = false; |
ee7e677f TB |
4335 | break; |
4336 | } | |
4337 | ||
524af0d6 JB |
4338 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED attribute at %C")) |
4339 | t = false; | |
ee7e677f TB |
4340 | else |
4341 | t = gfc_add_protected (¤t_attr, NULL, &seen_at[d]); | |
4342 | break; | |
4343 | ||
6de9cd9a | 4344 | case DECL_PRIVATE: |
231b2fcc TS |
4345 | t = gfc_add_access (¤t_attr, ACCESS_PRIVATE, NULL, |
4346 | &seen_at[d]); | |
6de9cd9a DN |
4347 | break; |
4348 | ||
4349 | case DECL_PUBLIC: | |
231b2fcc TS |
4350 | t = gfc_add_access (¤t_attr, ACCESS_PUBLIC, NULL, |
4351 | &seen_at[d]); | |
6de9cd9a DN |
4352 | break; |
4353 | ||
34d567d1 | 4354 | case DECL_STATIC: |
6de9cd9a | 4355 | case DECL_SAVE: |
80f95228 | 4356 | t = gfc_add_save (¤t_attr, SAVE_EXPLICIT, NULL, &seen_at[d]); |
6de9cd9a DN |
4357 | break; |
4358 | ||
34d567d1 FR |
4359 | case DECL_AUTOMATIC: |
4360 | t = gfc_add_automatic (¤t_attr, NULL, &seen_at[d]); | |
4361 | break; | |
4362 | ||
6de9cd9a DN |
4363 | case DECL_TARGET: |
4364 | t = gfc_add_target (¤t_attr, &seen_at[d]); | |
4365 | break; | |
4366 | ||
a8b3b0b6 CR |
4367 | case DECL_IS_BIND_C: |
4368 | t = gfc_add_is_bind_c(¤t_attr, NULL, &seen_at[d], 0); | |
4369 | break; | |
f5acf0f2 | 4370 | |
06469efd | 4371 | case DECL_VALUE: |
524af0d6 JB |
4372 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE attribute at %C")) |
4373 | t = false; | |
06469efd PT |
4374 | else |
4375 | t = gfc_add_value (¤t_attr, NULL, &seen_at[d]); | |
4376 | break; | |
4377 | ||
775e6c3a | 4378 | case DECL_VOLATILE: |
524af0d6 JB |
4379 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE attribute at %C")) |
4380 | t = false; | |
775e6c3a TB |
4381 | else |
4382 | t = gfc_add_volatile (¤t_attr, NULL, &seen_at[d]); | |
4383 | break; | |
4384 | ||
6de9cd9a DN |
4385 | default: |
4386 | gfc_internal_error ("match_attr_spec(): Bad attribute"); | |
4387 | } | |
4388 | ||
524af0d6 | 4389 | if (!t) |
6de9cd9a DN |
4390 | { |
4391 | m = MATCH_ERROR; | |
4392 | goto cleanup; | |
4393 | } | |
4394 | } | |
4395 | ||
dab2cbf8 | 4396 | /* Since Fortran 2008 module variables implicitly have the SAVE attribute. */ |
4668d6f9 PT |
4397 | if ((gfc_current_state () == COMP_MODULE |
4398 | || gfc_current_state () == COMP_SUBMODULE) | |
4399 | && !current_attr.save | |
dab2cbf8 | 4400 | && (gfc_option.allow_std & GFC_STD_F2008) != 0) |
80f95228 JW |
4401 | current_attr.save = SAVE_IMPLICIT; |
4402 | ||
6de9cd9a DN |
4403 | colon_seen = 1; |
4404 | return MATCH_YES; | |
4405 | ||
4406 | cleanup: | |
63645982 | 4407 | gfc_current_locus = start; |
6de9cd9a DN |
4408 | gfc_free_array_spec (current_as); |
4409 | current_as = NULL; | |
4410 | return m; | |
4411 | } | |
4412 | ||
4413 | ||
a8b3b0b6 CR |
4414 | /* Set the binding label, dest_label, either with the binding label |
4415 | stored in the given gfc_typespec, ts, or if none was provided, it | |
4416 | will be the symbol name in all lower case, as required by the draft | |
4417 | (J3/04-007, section 15.4.1). If a binding label was given and | |
4418 | there is more than one argument (num_idents), it is an error. */ | |
4419 | ||
524af0d6 | 4420 | static bool |
f5acf0f2 | 4421 | set_binding_label (const char **dest_label, const char *sym_name, |
9975a30b | 4422 | int num_idents) |
a8b3b0b6 | 4423 | { |
ad4a2f64 | 4424 | if (num_idents > 1 && has_name_equals) |
a8b3b0b6 | 4425 | { |
ad4a2f64 TB |
4426 | gfc_error ("Multiple identifiers provided with " |
4427 | "single NAME= specifier at %C"); | |
524af0d6 | 4428 | return false; |
ad4a2f64 | 4429 | } |
a8b3b0b6 | 4430 | |
62603fae | 4431 | if (curr_binding_label) |
eea58adb | 4432 | /* Binding label given; store in temp holder till have sym. */ |
62603fae | 4433 | *dest_label = curr_binding_label; |
a8b3b0b6 CR |
4434 | else |
4435 | { | |
4436 | /* No binding label given, and the NAME= specifier did not exist, | |
4437 | which means there was no NAME="". */ | |
4438 | if (sym_name != NULL && has_name_equals == 0) | |
62603fae | 4439 | *dest_label = IDENTIFIER_POINTER (get_identifier (sym_name)); |
a8b3b0b6 | 4440 | } |
f5acf0f2 | 4441 | |
524af0d6 | 4442 | return true; |
a8b3b0b6 CR |
4443 | } |
4444 | ||
4445 | ||
4446 | /* Set the status of the given common block as being BIND(C) or not, | |
4447 | depending on the given parameter, is_bind_c. */ | |
4448 | ||
4449 | void | |
4450 | set_com_block_bind_c (gfc_common_head *com_block, int is_bind_c) | |
4451 | { | |
4452 | com_block->is_bind_c = is_bind_c; | |
4453 | return; | |
4454 | } | |
4455 | ||
4456 | ||
4457 | /* Verify that the given gfc_typespec is for a C interoperable type. */ | |
4458 | ||
524af0d6 | 4459 | bool |
00820a2a | 4460 | gfc_verify_c_interop (gfc_typespec *ts) |
a8b3b0b6 | 4461 | { |
bc21d315 | 4462 | if (ts->type == BT_DERIVED && ts->u.derived != NULL) |
ba3721c1 | 4463 | return (ts->u.derived->ts.is_c_interop || ts->u.derived->attr.is_bind_c) |
524af0d6 | 4464 | ? true : false; |
00820a2a | 4465 | else if (ts->type == BT_CLASS) |
524af0d6 | 4466 | return false; |
45a69325 | 4467 | else if (ts->is_c_interop != 1 && ts->type != BT_ASSUMED) |
524af0d6 | 4468 | return false; |
45a69325 | 4469 | |
524af0d6 | 4470 | return true; |
a8b3b0b6 CR |
4471 | } |
4472 | ||
4473 | ||
4474 | /* Verify that the variables of a given common block, which has been | |
4475 | defined with the attribute specifier bind(c), to be of a C | |
4476 | interoperable type. Errors will be reported here, if | |
4477 | encountered. */ | |
4478 | ||
524af0d6 | 4479 | bool |
a8b3b0b6 CR |
4480 | verify_com_block_vars_c_interop (gfc_common_head *com_block) |
4481 | { | |
4482 | gfc_symbol *curr_sym = NULL; | |
524af0d6 | 4483 | bool retval = true; |
a8b3b0b6 CR |
4484 | |
4485 | curr_sym = com_block->head; | |
f5acf0f2 | 4486 | |
a8b3b0b6 CR |
4487 | /* Make sure we have at least one symbol. */ |
4488 | if (curr_sym == NULL) | |
4489 | return retval; | |
4490 | ||
4491 | /* Here we know we have a symbol, so we'll execute this loop | |
4492 | at least once. */ | |
4493 | do | |
4494 | { | |
4495 | /* The second to last param, 1, says this is in a common block. */ | |
4496 | retval = verify_bind_c_sym (curr_sym, &(curr_sym->ts), 1, com_block); | |
4497 | curr_sym = curr_sym->common_next; | |
f5acf0f2 | 4498 | } while (curr_sym != NULL); |
a8b3b0b6 CR |
4499 | |
4500 | return retval; | |
4501 | } | |
4502 | ||
4503 | ||
4504 | /* Verify that a given BIND(C) symbol is C interoperable. If it is not, | |
4505 | an appropriate error message is reported. */ | |
4506 | ||
524af0d6 | 4507 | bool |
a8b3b0b6 CR |
4508 | verify_bind_c_sym (gfc_symbol *tmp_sym, gfc_typespec *ts, |
4509 | int is_in_common, gfc_common_head *com_block) | |
4510 | { | |
8327f9c2 | 4511 | bool bind_c_function = false; |
524af0d6 | 4512 | bool retval = true; |
d8fa96e0 | 4513 | |
8327f9c2 TB |
4514 | if (tmp_sym->attr.function && tmp_sym->attr.is_bind_c) |
4515 | bind_c_function = true; | |
4516 | ||
d8fa96e0 CR |
4517 | if (tmp_sym->attr.function && tmp_sym->result != NULL) |
4518 | { | |
4519 | tmp_sym = tmp_sym->result; | |
4520 | /* Make sure it wasn't an implicitly typed result. */ | |
4daa149b | 4521 | if (tmp_sym->attr.implicit_type && warn_c_binding_type) |
d8fa96e0 | 4522 | { |
48749dbc MLI |
4523 | gfc_warning (OPT_Wc_binding_type, |
4524 | "Implicitly declared BIND(C) function %qs at " | |
d8fa96e0 CR |
4525 | "%L may not be C interoperable", tmp_sym->name, |
4526 | &tmp_sym->declared_at); | |
4527 | tmp_sym->ts.f90_type = tmp_sym->ts.type; | |
4528 | /* Mark it as C interoperable to prevent duplicate warnings. */ | |
4529 | tmp_sym->ts.is_c_interop = 1; | |
4530 | tmp_sym->attr.is_c_interop = 1; | |
4531 | } | |
4532 | } | |
8327f9c2 | 4533 | |
a8b3b0b6 CR |
4534 | /* Here, we know we have the bind(c) attribute, so if we have |
4535 | enough type info, then verify that it's a C interop kind. | |
4536 | The info could be in the symbol already, or possibly still in | |
4537 | the given ts (current_ts), so look in both. */ | |
f5acf0f2 | 4538 | if (tmp_sym->ts.type != BT_UNKNOWN || ts->type != BT_UNKNOWN) |
a8b3b0b6 | 4539 | { |
524af0d6 | 4540 | if (!gfc_verify_c_interop (&(tmp_sym->ts))) |
a8b3b0b6 CR |
4541 | { |
4542 | /* See if we're dealing with a sym in a common block or not. */ | |
4daa149b | 4543 | if (is_in_common == 1 && warn_c_binding_type) |
a8b3b0b6 | 4544 | { |
48749dbc MLI |
4545 | gfc_warning (OPT_Wc_binding_type, |
4546 | "Variable %qs in common block %qs at %L " | |
a8b3b0b6 | 4547 | "may not be a C interoperable " |
48749dbc | 4548 | "kind though common block %qs is BIND(C)", |
a8b3b0b6 CR |
4549 | tmp_sym->name, com_block->name, |
4550 | &(tmp_sym->declared_at), com_block->name); | |
4551 | } | |
4552 | else | |
4553 | { | |
4554 | if (tmp_sym->ts.type == BT_DERIVED || ts->type == BT_DERIVED) | |
c4100eae | 4555 | gfc_error ("Type declaration %qs at %L is not C " |
a8b3b0b6 CR |
4556 | "interoperable but it is BIND(C)", |
4557 | tmp_sym->name, &(tmp_sym->declared_at)); | |
4daa149b | 4558 | else if (warn_c_binding_type) |
48749dbc | 4559 | gfc_warning (OPT_Wc_binding_type, "Variable %qs at %L " |
a8b3b0b6 | 4560 | "may not be a C interoperable " |
c4100eae | 4561 | "kind but it is BIND(C)", |
a8b3b0b6 CR |
4562 | tmp_sym->name, &(tmp_sym->declared_at)); |
4563 | } | |
4564 | } | |
f5acf0f2 | 4565 | |
a8b3b0b6 CR |
4566 | /* Variables declared w/in a common block can't be bind(c) |
4567 | since there's no way for C to see these variables, so there's | |
4568 | semantically no reason for the attribute. */ | |
4569 | if (is_in_common == 1 && tmp_sym->attr.is_bind_c == 1) | |
4570 | { | |
c4100eae | 4571 | gfc_error ("Variable %qs in common block %qs at " |
a8b3b0b6 CR |
4572 | "%L cannot be declared with BIND(C) " |
4573 | "since it is not a global", | |
4574 | tmp_sym->name, com_block->name, | |
4575 | &(tmp_sym->declared_at)); | |
524af0d6 | 4576 | retval = false; |
a8b3b0b6 | 4577 | } |
f5acf0f2 | 4578 | |
a8b3b0b6 CR |
4579 | /* Scalar variables that are bind(c) can not have the pointer |
4580 | or allocatable attributes. */ | |
4581 | if (tmp_sym->attr.is_bind_c == 1) | |
4582 | { | |
4583 | if (tmp_sym->attr.pointer == 1) | |
4584 | { | |
c4100eae | 4585 | gfc_error ("Variable %qs at %L cannot have both the " |
a8b3b0b6 CR |
4586 | "POINTER and BIND(C) attributes", |
4587 | tmp_sym->name, &(tmp_sym->declared_at)); | |
524af0d6 | 4588 | retval = false; |
a8b3b0b6 CR |
4589 | } |
4590 | ||
4591 | if (tmp_sym->attr.allocatable == 1) | |
4592 | { | |
c4100eae | 4593 | gfc_error ("Variable %qs at %L cannot have both the " |
a8b3b0b6 CR |
4594 | "ALLOCATABLE and BIND(C) attributes", |
4595 | tmp_sym->name, &(tmp_sym->declared_at)); | |
524af0d6 | 4596 | retval = false; |
a8b3b0b6 CR |
4597 | } |
4598 | ||
8327f9c2 TB |
4599 | } |
4600 | ||
4601 | /* If it is a BIND(C) function, make sure the return value is a | |
4602 | scalar value. The previous tests in this function made sure | |
4603 | the type is interoperable. */ | |
4604 | if (bind_c_function && tmp_sym->as != NULL) | |
c4100eae | 4605 | gfc_error ("Return type of BIND(C) function %qs at %L cannot " |
8327f9c2 TB |
4606 | "be an array", tmp_sym->name, &(tmp_sym->declared_at)); |
4607 | ||
4608 | /* BIND(C) functions can not return a character string. */ | |
4609 | if (bind_c_function && tmp_sym->ts.type == BT_CHARACTER) | |
bc21d315 JW |
4610 | if (tmp_sym->ts.u.cl == NULL || tmp_sym->ts.u.cl->length == NULL |
4611 | || tmp_sym->ts.u.cl->length->expr_type != EXPR_CONSTANT | |
4612 | || mpz_cmp_si (tmp_sym->ts.u.cl->length->value.integer, 1) != 0) | |
c4100eae | 4613 | gfc_error ("Return type of BIND(C) function %qs at %L cannot " |
a8b3b0b6 CR |
4614 | "be a character string", tmp_sym->name, |
4615 | &(tmp_sym->declared_at)); | |
a8b3b0b6 CR |
4616 | } |
4617 | ||
4618 | /* See if the symbol has been marked as private. If it has, make sure | |
4619 | there is no binding label and warn the user if there is one. */ | |
4620 | if (tmp_sym->attr.access == ACCESS_PRIVATE | |
62603fae | 4621 | && tmp_sym->binding_label) |
a8b3b0b6 CR |
4622 | /* Use gfc_warning_now because we won't say that the symbol fails |
4623 | just because of this. */ | |
db30e21c | 4624 | gfc_warning_now (0, "Symbol %qs at %L is marked PRIVATE but has been " |
4daa149b | 4625 | "given the binding label %qs", tmp_sym->name, |
a8b3b0b6 CR |
4626 | &(tmp_sym->declared_at), tmp_sym->binding_label); |
4627 | ||
4628 | return retval; | |
4629 | } | |
4630 | ||
4631 | ||
4632 | /* Set the appropriate fields for a symbol that's been declared as | |
4633 | BIND(C) (the is_bind_c flag and the binding label), and verify that | |
4634 | the type is C interoperable. Errors are reported by the functions | |
4635 | used to set/test these fields. */ | |
4636 | ||
524af0d6 | 4637 | bool |
a8b3b0b6 CR |
4638 | set_verify_bind_c_sym (gfc_symbol *tmp_sym, int num_idents) |
4639 | { | |
524af0d6 | 4640 | bool retval = true; |
f5acf0f2 | 4641 | |
a8b3b0b6 CR |
4642 | /* TODO: Do we need to make sure the vars aren't marked private? */ |
4643 | ||
4644 | /* Set the is_bind_c bit in symbol_attribute. */ | |
4645 | gfc_add_is_bind_c (&(tmp_sym->attr), tmp_sym->name, &gfc_current_locus, 0); | |
4646 | ||
524af0d6 JB |
4647 | if (!set_binding_label (&tmp_sym->binding_label, tmp_sym->name, num_idents)) |
4648 | return false; | |
a8b3b0b6 CR |
4649 | |
4650 | return retval; | |
4651 | } | |
4652 | ||
4653 | ||
4654 | /* Set the fields marking the given common block as BIND(C), including | |
4655 | a binding label, and report any errors encountered. */ | |
4656 | ||
524af0d6 | 4657 | bool |
a8b3b0b6 CR |
4658 | set_verify_bind_c_com_block (gfc_common_head *com_block, int num_idents) |
4659 | { | |
524af0d6 | 4660 | bool retval = true; |
f5acf0f2 | 4661 | |
a8b3b0b6 | 4662 | /* destLabel, common name, typespec (which may have binding label). */ |
70112e2a | 4663 | if (!set_binding_label (&com_block->binding_label, com_block->name, |
524af0d6 JB |
4664 | num_idents)) |
4665 | return false; | |
a8b3b0b6 CR |
4666 | |
4667 | /* Set the given common block (com_block) to being bind(c) (1). */ | |
4668 | set_com_block_bind_c (com_block, 1); | |
4669 | ||
4670 | return retval; | |
4671 | } | |
4672 | ||
4673 | ||
4674 | /* Retrieve the list of one or more identifiers that the given bind(c) | |
4675 | attribute applies to. */ | |
4676 | ||
524af0d6 | 4677 | bool |
a8b3b0b6 CR |
4678 | get_bind_c_idents (void) |
4679 | { | |
4680 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4681 | int num_idents = 0; | |
4682 | gfc_symbol *tmp_sym = NULL; | |
4683 | match found_id; | |
4684 | gfc_common_head *com_block = NULL; | |
f5acf0f2 | 4685 | |
a8b3b0b6 CR |
4686 | if (gfc_match_name (name) == MATCH_YES) |
4687 | { | |
4688 | found_id = MATCH_YES; | |
4689 | gfc_get_ha_symbol (name, &tmp_sym); | |
4690 | } | |
4691 | else if (match_common_name (name) == MATCH_YES) | |
4692 | { | |
4693 | found_id = MATCH_YES; | |
4694 | com_block = gfc_get_common (name, 0); | |
4695 | } | |
4696 | else | |
4697 | { | |
4698 | gfc_error ("Need either entity or common block name for " | |
4699 | "attribute specification statement at %C"); | |
524af0d6 | 4700 | return false; |
a8b3b0b6 | 4701 | } |
f5acf0f2 | 4702 | |
a8b3b0b6 CR |
4703 | /* Save the current identifier and look for more. */ |
4704 | do | |
4705 | { | |
4706 | /* Increment the number of identifiers found for this spec stmt. */ | |
4707 | num_idents++; | |
4708 | ||
4709 | /* Make sure we have a sym or com block, and verify that it can | |
4710 | be bind(c). Set the appropriate field(s) and look for more | |
4711 | identifiers. */ | |
f5acf0f2 | 4712 | if (tmp_sym != NULL || com_block != NULL) |
a8b3b0b6 CR |
4713 | { |
4714 | if (tmp_sym != NULL) | |
4715 | { | |
524af0d6 JB |
4716 | if (!set_verify_bind_c_sym (tmp_sym, num_idents)) |
4717 | return false; | |
a8b3b0b6 CR |
4718 | } |
4719 | else | |
4720 | { | |
524af0d6 JB |
4721 | if (!set_verify_bind_c_com_block (com_block, num_idents)) |
4722 | return false; | |
a8b3b0b6 | 4723 | } |
f5acf0f2 | 4724 | |
a8b3b0b6 CR |
4725 | /* Look to see if we have another identifier. */ |
4726 | tmp_sym = NULL; | |
4727 | if (gfc_match_eos () == MATCH_YES) | |
4728 | found_id = MATCH_NO; | |
4729 | else if (gfc_match_char (',') != MATCH_YES) | |
4730 | found_id = MATCH_NO; | |
4731 | else if (gfc_match_name (name) == MATCH_YES) | |
4732 | { | |
4733 | found_id = MATCH_YES; | |
4734 | gfc_get_ha_symbol (name, &tmp_sym); | |
4735 | } | |
4736 | else if (match_common_name (name) == MATCH_YES) | |
4737 | { | |
4738 | found_id = MATCH_YES; | |
4739 | com_block = gfc_get_common (name, 0); | |
4740 | } | |
4741 | else | |
4742 | { | |
4743 | gfc_error ("Missing entity or common block name for " | |
4744 | "attribute specification statement at %C"); | |
524af0d6 | 4745 | return false; |
a8b3b0b6 CR |
4746 | } |
4747 | } | |
4748 | else | |
4749 | { | |
4750 | gfc_internal_error ("Missing symbol"); | |
4751 | } | |
4752 | } while (found_id == MATCH_YES); | |
4753 | ||
4754 | /* if we get here we were successful */ | |
524af0d6 | 4755 | return true; |
a8b3b0b6 CR |
4756 | } |
4757 | ||
4758 | ||
4759 | /* Try and match a BIND(C) attribute specification statement. */ | |
f5acf0f2 | 4760 | |
a8b3b0b6 CR |
4761 | match |
4762 | gfc_match_bind_c_stmt (void) | |
4763 | { | |
4764 | match found_match = MATCH_NO; | |
4765 | gfc_typespec *ts; | |
4766 | ||
4767 | ts = ¤t_ts; | |
f5acf0f2 | 4768 | |
a8b3b0b6 CR |
4769 | /* This may not be necessary. */ |
4770 | gfc_clear_ts (ts); | |
4771 | /* Clear the temporary binding label holder. */ | |
62603fae | 4772 | curr_binding_label = NULL; |
a8b3b0b6 CR |
4773 | |
4774 | /* Look for the bind(c). */ | |
1eabf70a | 4775 | found_match = gfc_match_bind_c (NULL, true); |
a8b3b0b6 CR |
4776 | |
4777 | if (found_match == MATCH_YES) | |
4778 | { | |
878cdb7b TB |
4779 | if (!gfc_notify_std (GFC_STD_F2003, "BIND(C) statement at %C")) |
4780 | return MATCH_ERROR; | |
4781 | ||
a8b3b0b6 CR |
4782 | /* Look for the :: now, but it is not required. */ |
4783 | gfc_match (" :: "); | |
4784 | ||
4785 | /* Get the identifier(s) that needs to be updated. This may need to | |
4786 | change to hand the flag(s) for the attr specified so all identifiers | |
4787 | found can have all appropriate parts updated (assuming that the same | |
4788 | spec stmt can have multiple attrs, such as both bind(c) and | |
4789 | allocatable...). */ | |
524af0d6 | 4790 | if (!get_bind_c_idents ()) |
a8b3b0b6 CR |
4791 | /* Error message should have printed already. */ |
4792 | return MATCH_ERROR; | |
4793 | } | |
4794 | ||
4795 | return found_match; | |
4796 | } | |
4797 | ||
4798 | ||
6de9cd9a DN |
4799 | /* Match a data declaration statement. */ |
4800 | ||
4801 | match | |
4802 | gfc_match_data_decl (void) | |
4803 | { | |
4804 | gfc_symbol *sym; | |
4805 | match m; | |
949d5b72 | 4806 | int elem; |
6de9cd9a | 4807 | |
a8b3b0b6 | 4808 | num_idents_on_line = 0; |
f5acf0f2 | 4809 | |
e74f1cc8 | 4810 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
6de9cd9a DN |
4811 | if (m != MATCH_YES) |
4812 | return m; | |
4813 | ||
2e23972e | 4814 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
f6288c24 | 4815 | && !gfc_comp_struct (gfc_current_state ())) |
6de9cd9a | 4816 | { |
bc21d315 | 4817 | sym = gfc_use_derived (current_ts.u.derived); |
6de9cd9a DN |
4818 | |
4819 | if (sym == NULL) | |
4820 | { | |
4821 | m = MATCH_ERROR; | |
4822 | goto cleanup; | |
4823 | } | |
4824 | ||
bc21d315 | 4825 | current_ts.u.derived = sym; |
6de9cd9a DN |
4826 | } |
4827 | ||
4828 | m = match_attr_spec (); | |
4829 | if (m == MATCH_ERROR) | |
4830 | { | |
4831 | m = MATCH_NO; | |
4832 | goto cleanup; | |
4833 | } | |
4834 | ||
8b704316 PT |
4835 | if (current_ts.type == BT_CLASS |
4836 | && current_ts.u.derived->attr.unlimited_polymorphic) | |
4837 | goto ok; | |
4838 | ||
2e23972e JW |
4839 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
4840 | && current_ts.u.derived->components == NULL | |
bc21d315 | 4841 | && !current_ts.u.derived->attr.zero_comp) |
6de9cd9a DN |
4842 | { |
4843 | ||
f6288c24 | 4844 | if (current_attr.pointer && gfc_comp_struct (gfc_current_state ())) |
6de9cd9a DN |
4845 | goto ok; |
4846 | ||
bc21d315 | 4847 | gfc_find_symbol (current_ts.u.derived->name, |
dd8b9dde | 4848 | current_ts.u.derived->ns, 1, &sym); |
6de9cd9a | 4849 | |
976e21f6 | 4850 | /* Any symbol that we find had better be a type definition |
f6288c24 FR |
4851 | which has its components defined, or be a structure definition |
4852 | actively being parsed. */ | |
4853 | if (sym != NULL && gfc_fl_struct (sym->attr.flavor) | |
bc21d315 | 4854 | && (current_ts.u.derived->components != NULL |
f6288c24 FR |
4855 | || current_ts.u.derived->attr.zero_comp |
4856 | || current_ts.u.derived == gfc_new_block)) | |
6de9cd9a DN |
4857 | goto ok; |
4858 | ||
a1b80ec7 JW |
4859 | gfc_error ("Derived type at %C has not been previously defined " |
4860 | "and so cannot appear in a derived type definition"); | |
4861 | m = MATCH_ERROR; | |
4862 | goto cleanup; | |
6de9cd9a DN |
4863 | } |
4864 | ||
4865 | ok: | |
4866 | /* If we have an old-style character declaration, and no new-style | |
4867 | attribute specifications, then there a comma is optional between | |
4868 | the type specification and the variable list. */ | |
4869 | if (m == MATCH_NO && current_ts.type == BT_CHARACTER && old_char_selector) | |
4870 | gfc_match_char (','); | |
4871 | ||
949d5b72 PT |
4872 | /* Give the types/attributes to symbols that follow. Give the element |
4873 | a number so that repeat character length expressions can be copied. */ | |
4874 | elem = 1; | |
6de9cd9a DN |
4875 | for (;;) |
4876 | { | |
a8b3b0b6 | 4877 | num_idents_on_line++; |
949d5b72 | 4878 | m = variable_decl (elem++); |
6de9cd9a DN |
4879 | if (m == MATCH_ERROR) |
4880 | goto cleanup; | |
4881 | if (m == MATCH_NO) | |
4882 | break; | |
4883 | ||
4884 | if (gfc_match_eos () == MATCH_YES) | |
4885 | goto cleanup; | |
4886 | if (gfc_match_char (',') != MATCH_YES) | |
4887 | break; | |
4888 | } | |
4889 | ||
0f447a6e | 4890 | if (!gfc_error_flag_test ()) |
8f81c3c6 | 4891 | gfc_error ("Syntax error in data declaration at %C"); |
6de9cd9a DN |
4892 | m = MATCH_ERROR; |
4893 | ||
a9f6f1f2 JD |
4894 | gfc_free_data_all (gfc_current_ns); |
4895 | ||
6de9cd9a DN |
4896 | cleanup: |
4897 | gfc_free_array_spec (current_as); | |
4898 | current_as = NULL; | |
4899 | return m; | |
4900 | } | |
4901 | ||
4902 | ||
4903 | /* Match a prefix associated with a function or subroutine | |
4904 | declaration. If the typespec pointer is nonnull, then a typespec | |
4905 | can be matched. Note that if nothing matches, MATCH_YES is | |
4906 | returned (the null string was matched). */ | |
4907 | ||
1c8bcdf7 PT |
4908 | match |
4909 | gfc_match_prefix (gfc_typespec *ts) | |
6de9cd9a | 4910 | { |
7389bce6 | 4911 | bool seen_type; |
e6c14898 DK |
4912 | bool seen_impure; |
4913 | bool found_prefix; | |
6de9cd9a DN |
4914 | |
4915 | gfc_clear_attr (¤t_attr); | |
e6c14898 DK |
4916 | seen_type = false; |
4917 | seen_impure = false; | |
6de9cd9a | 4918 | |
3df684e2 DK |
4919 | gcc_assert (!gfc_matching_prefix); |
4920 | gfc_matching_prefix = true; | |
f37e928c | 4921 | |
e6c14898 | 4922 | do |
6de9cd9a | 4923 | { |
e6c14898 | 4924 | found_prefix = false; |
6de9cd9a | 4925 | |
70112e2a PT |
4926 | /* MODULE is a prefix like PURE, ELEMENTAL, etc., having a |
4927 | corresponding attribute seems natural and distinguishes these | |
4928 | procedures from procedure types of PROC_MODULE, which these are | |
4929 | as well. */ | |
4930 | if (gfc_match ("module% ") == MATCH_YES) | |
4931 | { | |
4932 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE prefix at %C")) | |
4933 | goto error; | |
4934 | ||
4935 | current_attr.module_procedure = 1; | |
4936 | found_prefix = true; | |
4937 | } | |
4938 | ||
e6c14898 DK |
4939 | if (!seen_type && ts != NULL |
4940 | && gfc_match_decl_type_spec (ts, 0) == MATCH_YES | |
4941 | && gfc_match_space () == MATCH_YES) | |
4942 | { | |
6de9cd9a | 4943 | |
e6c14898 DK |
4944 | seen_type = true; |
4945 | found_prefix = true; | |
4946 | } | |
4947 | ||
4948 | if (gfc_match ("elemental% ") == MATCH_YES) | |
4949 | { | |
524af0d6 | 4950 | if (!gfc_add_elemental (¤t_attr, NULL)) |
e6c14898 DK |
4951 | goto error; |
4952 | ||
4953 | found_prefix = true; | |
4954 | } | |
4955 | ||
4956 | if (gfc_match ("pure% ") == MATCH_YES) | |
4957 | { | |
524af0d6 | 4958 | if (!gfc_add_pure (¤t_attr, NULL)) |
e6c14898 DK |
4959 | goto error; |
4960 | ||
4961 | found_prefix = true; | |
4962 | } | |
6de9cd9a | 4963 | |
e6c14898 DK |
4964 | if (gfc_match ("recursive% ") == MATCH_YES) |
4965 | { | |
524af0d6 | 4966 | if (!gfc_add_recursive (¤t_attr, NULL)) |
e6c14898 DK |
4967 | goto error; |
4968 | ||
4969 | found_prefix = true; | |
4970 | } | |
4971 | ||
4972 | /* IMPURE is a somewhat special case, as it needs not set an actual | |
4973 | attribute but rather only prevents ELEMENTAL routines from being | |
4974 | automatically PURE. */ | |
4975 | if (gfc_match ("impure% ") == MATCH_YES) | |
4976 | { | |
524af0d6 | 4977 | if (!gfc_notify_std (GFC_STD_F2008, "IMPURE procedure at %C")) |
e6c14898 DK |
4978 | goto error; |
4979 | ||
4980 | seen_impure = true; | |
4981 | found_prefix = true; | |
4982 | } | |
6de9cd9a | 4983 | } |
e6c14898 | 4984 | while (found_prefix); |
6de9cd9a | 4985 | |
e6c14898 DK |
4986 | /* IMPURE and PURE must not both appear, of course. */ |
4987 | if (seen_impure && current_attr.pure) | |
6de9cd9a | 4988 | { |
e6c14898 DK |
4989 | gfc_error ("PURE and IMPURE must not appear both at %C"); |
4990 | goto error; | |
6de9cd9a DN |
4991 | } |
4992 | ||
e6c14898 DK |
4993 | /* If IMPURE it not seen but the procedure is ELEMENTAL, mark it as PURE. */ |
4994 | if (!seen_impure && current_attr.elemental && !current_attr.pure) | |
6de9cd9a | 4995 | { |
524af0d6 | 4996 | if (!gfc_add_pure (¤t_attr, NULL)) |
f37e928c | 4997 | goto error; |
6de9cd9a DN |
4998 | } |
4999 | ||
5000 | /* At this point, the next item is not a prefix. */ | |
3df684e2 | 5001 | gcc_assert (gfc_matching_prefix); |
4668d6f9 | 5002 | |
3df684e2 | 5003 | gfc_matching_prefix = false; |
6de9cd9a | 5004 | return MATCH_YES; |
f37e928c DK |
5005 | |
5006 | error: | |
3df684e2 DK |
5007 | gcc_assert (gfc_matching_prefix); |
5008 | gfc_matching_prefix = false; | |
f37e928c | 5009 | return MATCH_ERROR; |
6de9cd9a DN |
5010 | } |
5011 | ||
5012 | ||
1c8bcdf7 | 5013 | /* Copy attributes matched by gfc_match_prefix() to attributes on a symbol. */ |
6de9cd9a | 5014 | |
524af0d6 | 5015 | static bool |
636dff67 | 5016 | copy_prefix (symbol_attribute *dest, locus *where) |
6de9cd9a | 5017 | { |
6442a6f4 PT |
5018 | if (dest->module_procedure) |
5019 | { | |
5020 | if (current_attr.elemental) | |
5021 | dest->elemental = 1; | |
5022 | ||
5023 | if (current_attr.pure) | |
5024 | dest->pure = 1; | |
5025 | ||
5026 | if (current_attr.recursive) | |
5027 | dest->recursive = 1; | |
5028 | ||
5029 | /* Module procedures are unusual in that the 'dest' is copied from | |
5030 | the interface declaration. However, this is an oportunity to | |
5031 | check that the submodule declaration is compliant with the | |
5032 | interface. */ | |
5033 | if (dest->elemental && !current_attr.elemental) | |
5034 | { | |
5035 | gfc_error ("ELEMENTAL prefix in MODULE PROCEDURE interface is " | |
5036 | "missing at %L", where); | |
5037 | return false; | |
5038 | } | |
5039 | ||
5040 | if (dest->pure && !current_attr.pure) | |
5041 | { | |
5042 | gfc_error ("PURE prefix in MODULE PROCEDURE interface is " | |
5043 | "missing at %L", where); | |
5044 | return false; | |
5045 | } | |
5046 | ||
5047 | if (dest->recursive && !current_attr.recursive) | |
5048 | { | |
5049 | gfc_error ("RECURSIVE prefix in MODULE PROCEDURE interface is " | |
5050 | "missing at %L", where); | |
5051 | return false; | |
5052 | } | |
5053 | ||
5054 | return true; | |
5055 | } | |
6de9cd9a | 5056 | |
524af0d6 JB |
5057 | if (current_attr.elemental && !gfc_add_elemental (dest, where)) |
5058 | return false; | |
6de9cd9a | 5059 | |
6442a6f4 PT |
5060 | if (current_attr.pure && !gfc_add_pure (dest, where)) |
5061 | return false; | |
5062 | ||
524af0d6 JB |
5063 | if (current_attr.recursive && !gfc_add_recursive (dest, where)) |
5064 | return false; | |
6de9cd9a | 5065 | |
524af0d6 | 5066 | return true; |
6de9cd9a DN |
5067 | } |
5068 | ||
5069 | ||
5070 | /* Match a formal argument list. */ | |
5071 | ||
5072 | match | |
636dff67 | 5073 | gfc_match_formal_arglist (gfc_symbol *progname, int st_flag, int null_flag) |
6de9cd9a DN |
5074 | { |
5075 | gfc_formal_arglist *head, *tail, *p, *q; | |
5076 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5077 | gfc_symbol *sym; | |
5078 | match m; | |
4668d6f9 | 5079 | gfc_formal_arglist *formal = NULL; |
6de9cd9a DN |
5080 | |
5081 | head = tail = NULL; | |
5082 | ||
4668d6f9 PT |
5083 | /* Keep the interface formal argument list and null it so that the |
5084 | matching for the new declaration can be done. The numbers and | |
5085 | names of the arguments are checked here. The interface formal | |
5086 | arguments are retained in formal_arglist and the characteristics | |
5087 | are compared in resolve.c(resolve_fl_procedure). See the remark | |
5088 | in get_proc_name about the eventual need to copy the formal_arglist | |
5089 | and populate the formal namespace of the interface symbol. */ | |
5090 | if (progname->attr.module_procedure | |
5091 | && progname->attr.host_assoc) | |
5092 | { | |
5093 | formal = progname->formal; | |
5094 | progname->formal = NULL; | |
5095 | } | |
5096 | ||
6de9cd9a DN |
5097 | if (gfc_match_char ('(') != MATCH_YES) |
5098 | { | |
5099 | if (null_flag) | |
5100 | goto ok; | |
5101 | return MATCH_NO; | |
5102 | } | |
5103 | ||
5104 | if (gfc_match_char (')') == MATCH_YES) | |
5105 | goto ok; | |
5106 | ||
5107 | for (;;) | |
5108 | { | |
5109 | if (gfc_match_char ('*') == MATCH_YES) | |
9362a03b JW |
5110 | { |
5111 | sym = NULL; | |
524af0d6 JB |
5112 | if (!gfc_notify_std (GFC_STD_F95_OBS, "Alternate-return argument " |
5113 | "at %C")) | |
9362a03b JW |
5114 | { |
5115 | m = MATCH_ERROR; | |
5116 | goto cleanup; | |
5117 | } | |
5118 | } | |
6de9cd9a DN |
5119 | else |
5120 | { | |
5121 | m = gfc_match_name (name); | |
5122 | if (m != MATCH_YES) | |
5123 | goto cleanup; | |
5124 | ||
5125 | if (gfc_get_symbol (name, NULL, &sym)) | |
5126 | goto cleanup; | |
5127 | } | |
5128 | ||
5129 | p = gfc_get_formal_arglist (); | |
5130 | ||
5131 | if (head == NULL) | |
5132 | head = tail = p; | |
5133 | else | |
5134 | { | |
5135 | tail->next = p; | |
5136 | tail = p; | |
5137 | } | |
5138 | ||
5139 | tail->sym = sym; | |
5140 | ||
5141 | /* We don't add the VARIABLE flavor because the name could be a | |
636dff67 SK |
5142 | dummy procedure. We don't apply these attributes to formal |
5143 | arguments of statement functions. */ | |
6de9cd9a | 5144 | if (sym != NULL && !st_flag |
524af0d6 JB |
5145 | && (!gfc_add_dummy(&sym->attr, sym->name, NULL) |
5146 | || !gfc_missing_attr (&sym->attr, NULL))) | |
6de9cd9a DN |
5147 | { |
5148 | m = MATCH_ERROR; | |
5149 | goto cleanup; | |
5150 | } | |
5151 | ||
5152 | /* The name of a program unit can be in a different namespace, | |
636dff67 SK |
5153 | so check for it explicitly. After the statement is accepted, |
5154 | the name is checked for especially in gfc_get_symbol(). */ | |
6de9cd9a DN |
5155 | if (gfc_new_block != NULL && sym != NULL |
5156 | && strcmp (sym->name, gfc_new_block->name) == 0) | |
5157 | { | |
c4100eae | 5158 | gfc_error ("Name %qs at %C is the name of the procedure", |
6de9cd9a DN |
5159 | sym->name); |
5160 | m = MATCH_ERROR; | |
5161 | goto cleanup; | |
5162 | } | |
5163 | ||
5164 | if (gfc_match_char (')') == MATCH_YES) | |
5165 | goto ok; | |
5166 | ||
5167 | m = gfc_match_char (','); | |
5168 | if (m != MATCH_YES) | |
5169 | { | |
5170 | gfc_error ("Unexpected junk in formal argument list at %C"); | |
5171 | goto cleanup; | |
5172 | } | |
5173 | } | |
5174 | ||
5175 | ok: | |
5176 | /* Check for duplicate symbols in the formal argument list. */ | |
5177 | if (head != NULL) | |
5178 | { | |
5179 | for (p = head; p->next; p = p->next) | |
5180 | { | |
5181 | if (p->sym == NULL) | |
5182 | continue; | |
5183 | ||
5184 | for (q = p->next; q; q = q->next) | |
5185 | if (p->sym == q->sym) | |
5186 | { | |
c4100eae | 5187 | gfc_error ("Duplicate symbol %qs in formal argument list " |
636dff67 | 5188 | "at %C", p->sym->name); |
6de9cd9a DN |
5189 | |
5190 | m = MATCH_ERROR; | |
5191 | goto cleanup; | |
5192 | } | |
5193 | } | |
5194 | } | |
5195 | ||
524af0d6 | 5196 | if (!gfc_add_explicit_interface (progname, IFSRC_DECL, head, NULL)) |
6de9cd9a DN |
5197 | { |
5198 | m = MATCH_ERROR; | |
5199 | goto cleanup; | |
5200 | } | |
5201 | ||
e9d9b48d PT |
5202 | /* gfc_error_now used in following and return with MATCH_YES because |
5203 | doing otherwise results in a cascade of extraneous errors and in | |
5204 | some cases an ICE in symbol.c(gfc_release_symbol). */ | |
0ef5fbc1 | 5205 | if (progname->attr.module_procedure && progname->attr.host_assoc) |
4668d6f9 | 5206 | { |
0ef5fbc1 PT |
5207 | bool arg_count_mismatch = false; |
5208 | ||
5209 | if (!formal && head) | |
5210 | arg_count_mismatch = true; | |
5211 | ||
5212 | /* Abbreviated module procedure declaration is not meant to have any | |
5213 | formal arguments! */ | |
e9d9b48d | 5214 | if (!progname->abr_modproc_decl && formal && !head) |
0ef5fbc1 PT |
5215 | arg_count_mismatch = true; |
5216 | ||
4668d6f9 PT |
5217 | for (p = formal, q = head; p && q; p = p->next, q = q->next) |
5218 | { | |
5219 | if ((p->next != NULL && q->next == NULL) | |
5220 | || (p->next == NULL && q->next != NULL)) | |
0ef5fbc1 | 5221 | arg_count_mismatch = true; |
4668d6f9 PT |
5222 | else if ((p->sym == NULL && q->sym == NULL) |
5223 | || strcmp (p->sym->name, q->sym->name) == 0) | |
5224 | continue; | |
5225 | else | |
5226 | gfc_error_now ("Mismatch in MODULE PROCEDURE formal " | |
5227 | "argument names (%s/%s) at %C", | |
5228 | p->sym->name, q->sym->name); | |
5229 | } | |
0ef5fbc1 PT |
5230 | |
5231 | if (arg_count_mismatch) | |
5232 | gfc_error_now ("Mismatch in number of MODULE PROCEDURE " | |
5233 | "formal arguments at %C"); | |
4668d6f9 PT |
5234 | } |
5235 | ||
6de9cd9a DN |
5236 | return MATCH_YES; |
5237 | ||
5238 | cleanup: | |
5239 | gfc_free_formal_arglist (head); | |
5240 | return m; | |
5241 | } | |
5242 | ||
5243 | ||
5244 | /* Match a RESULT specification following a function declaration or | |
5245 | ENTRY statement. Also matches the end-of-statement. */ | |
5246 | ||
5247 | static match | |
66e4ab31 | 5248 | match_result (gfc_symbol *function, gfc_symbol **result) |
6de9cd9a DN |
5249 | { |
5250 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5251 | gfc_symbol *r; | |
5252 | match m; | |
5253 | ||
5254 | if (gfc_match (" result (") != MATCH_YES) | |
5255 | return MATCH_NO; | |
5256 | ||
5257 | m = gfc_match_name (name); | |
5258 | if (m != MATCH_YES) | |
5259 | return m; | |
5260 | ||
a8b3b0b6 CR |
5261 | /* Get the right paren, and that's it because there could be the |
5262 | bind(c) attribute after the result clause. */ | |
524af0d6 | 5263 | if (gfc_match_char (')') != MATCH_YES) |
6de9cd9a | 5264 | { |
a8b3b0b6 | 5265 | /* TODO: should report the missing right paren here. */ |
6de9cd9a DN |
5266 | return MATCH_ERROR; |
5267 | } | |
5268 | ||
5269 | if (strcmp (function->name, name) == 0) | |
5270 | { | |
636dff67 | 5271 | gfc_error ("RESULT variable at %C must be different than function name"); |
6de9cd9a DN |
5272 | return MATCH_ERROR; |
5273 | } | |
5274 | ||
5275 | if (gfc_get_symbol (name, NULL, &r)) | |
5276 | return MATCH_ERROR; | |
5277 | ||
524af0d6 | 5278 | if (!gfc_add_result (&r->attr, r->name, NULL)) |
6de9cd9a DN |
5279 | return MATCH_ERROR; |
5280 | ||
5281 | *result = r; | |
5282 | ||
5283 | return MATCH_YES; | |
5284 | } | |
5285 | ||
5286 | ||
a8b3b0b6 CR |
5287 | /* Match a function suffix, which could be a combination of a result |
5288 | clause and BIND(C), either one, or neither. The draft does not | |
5289 | require them to come in a specific order. */ | |
5290 | ||
5291 | match | |
5292 | gfc_match_suffix (gfc_symbol *sym, gfc_symbol **result) | |
5293 | { | |
5294 | match is_bind_c; /* Found bind(c). */ | |
5295 | match is_result; /* Found result clause. */ | |
5296 | match found_match; /* Status of whether we've found a good match. */ | |
8fc541d3 | 5297 | char peek_char; /* Character we're going to peek at. */ |
1eabf70a | 5298 | bool allow_binding_name; |
a8b3b0b6 CR |
5299 | |
5300 | /* Initialize to having found nothing. */ | |
5301 | found_match = MATCH_NO; | |
f5acf0f2 | 5302 | is_bind_c = MATCH_NO; |
a8b3b0b6 CR |
5303 | is_result = MATCH_NO; |
5304 | ||
5305 | /* Get the next char to narrow between result and bind(c). */ | |
5306 | gfc_gobble_whitespace (); | |
8fc541d3 | 5307 | peek_char = gfc_peek_ascii_char (); |
a8b3b0b6 | 5308 | |
1eabf70a TB |
5309 | /* C binding names are not allowed for internal procedures. */ |
5310 | if (gfc_current_state () == COMP_CONTAINS | |
5311 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
5312 | allow_binding_name = false; | |
5313 | else | |
5314 | allow_binding_name = true; | |
5315 | ||
a8b3b0b6 CR |
5316 | switch (peek_char) |
5317 | { | |
5318 | case 'r': | |
5319 | /* Look for result clause. */ | |
5320 | is_result = match_result (sym, result); | |
5321 | if (is_result == MATCH_YES) | |
5322 | { | |
5323 | /* Now see if there is a bind(c) after it. */ | |
1eabf70a | 5324 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
5325 | /* We've found the result clause and possibly bind(c). */ |
5326 | found_match = MATCH_YES; | |
5327 | } | |
5328 | else | |
5329 | /* This should only be MATCH_ERROR. */ | |
f5acf0f2 | 5330 | found_match = is_result; |
a8b3b0b6 CR |
5331 | break; |
5332 | case 'b': | |
5333 | /* Look for bind(c) first. */ | |
1eabf70a | 5334 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
5335 | if (is_bind_c == MATCH_YES) |
5336 | { | |
5337 | /* Now see if a result clause followed it. */ | |
5338 | is_result = match_result (sym, result); | |
5339 | found_match = MATCH_YES; | |
5340 | } | |
5341 | else | |
5342 | { | |
5343 | /* Should only be a MATCH_ERROR if we get here after seeing 'b'. */ | |
5344 | found_match = MATCH_ERROR; | |
5345 | } | |
5346 | break; | |
5347 | default: | |
5348 | gfc_error ("Unexpected junk after function declaration at %C"); | |
5349 | found_match = MATCH_ERROR; | |
5350 | break; | |
5351 | } | |
5352 | ||
a8b3b0b6 | 5353 | if (is_bind_c == MATCH_YES) |
01f4fff1 | 5354 | { |
1eabf70a | 5355 | /* Fortran 2008 draft allows BIND(C) for internal procedures. */ |
01f4fff1 | 5356 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 5357 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
524af0d6 JB |
5358 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
5359 | "at %L may not be specified for an internal " | |
5360 | "procedure", &gfc_current_locus)) | |
1eabf70a TB |
5361 | return MATCH_ERROR; |
5362 | ||
524af0d6 | 5363 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, &gfc_current_locus, 1)) |
01f4fff1 TB |
5364 | return MATCH_ERROR; |
5365 | } | |
f5acf0f2 | 5366 | |
a8b3b0b6 CR |
5367 | return found_match; |
5368 | } | |
5369 | ||
5370 | ||
3070bab4 JW |
5371 | /* Procedure pointer return value without RESULT statement: |
5372 | Add "hidden" result variable named "ppr@". */ | |
5373 | ||
524af0d6 | 5374 | static bool |
3070bab4 JW |
5375 | add_hidden_procptr_result (gfc_symbol *sym) |
5376 | { | |
5377 | bool case1,case2; | |
5378 | ||
5379 | if (gfc_notification_std (GFC_STD_F2003) == ERROR) | |
524af0d6 | 5380 | return false; |
3070bab4 JW |
5381 | |
5382 | /* First usage case: PROCEDURE and EXTERNAL statements. */ | |
5383 | case1 = gfc_current_state () == COMP_FUNCTION && gfc_current_block () | |
5384 | && strcmp (gfc_current_block ()->name, sym->name) == 0 | |
5385 | && sym->attr.external; | |
5386 | /* Second usage case: INTERFACE statements. */ | |
5387 | case2 = gfc_current_state () == COMP_INTERFACE && gfc_state_stack->previous | |
5388 | && gfc_state_stack->previous->state == COMP_FUNCTION | |
5389 | && strcmp (gfc_state_stack->previous->sym->name, sym->name) == 0; | |
5390 | ||
5391 | if (case1 || case2) | |
5392 | { | |
5393 | gfc_symtree *stree; | |
5394 | if (case1) | |
08a6b8e0 | 5395 | gfc_get_sym_tree ("ppr@", gfc_current_ns, &stree, false); |
3070bab4 | 5396 | else if (case2) |
c73b6478 JW |
5397 | { |
5398 | gfc_symtree *st2; | |
08a6b8e0 | 5399 | gfc_get_sym_tree ("ppr@", gfc_current_ns->parent, &stree, false); |
c73b6478 JW |
5400 | st2 = gfc_new_symtree (&gfc_current_ns->sym_root, "ppr@"); |
5401 | st2->n.sym = stree->n.sym; | |
5402 | } | |
3070bab4 JW |
5403 | sym->result = stree->n.sym; |
5404 | ||
5405 | sym->result->attr.proc_pointer = sym->attr.proc_pointer; | |
5406 | sym->result->attr.pointer = sym->attr.pointer; | |
5407 | sym->result->attr.external = sym->attr.external; | |
5408 | sym->result->attr.referenced = sym->attr.referenced; | |
fc9c6e5d | 5409 | sym->result->ts = sym->ts; |
3070bab4 JW |
5410 | sym->attr.proc_pointer = 0; |
5411 | sym->attr.pointer = 0; | |
5412 | sym->attr.external = 0; | |
5413 | if (sym->result->attr.external && sym->result->attr.pointer) | |
5414 | { | |
5415 | sym->result->attr.pointer = 0; | |
5416 | sym->result->attr.proc_pointer = 1; | |
5417 | } | |
5418 | ||
5419 | return gfc_add_result (&sym->result->attr, sym->result->name, NULL); | |
5420 | } | |
5421 | /* POINTER after PROCEDURE/EXTERNAL/INTERFACE statement. */ | |
5422 | else if (sym->attr.function && !sym->attr.external && sym->attr.pointer | |
5423 | && sym->result && sym->result != sym && sym->result->attr.external | |
5424 | && sym == gfc_current_ns->proc_name | |
5425 | && sym == sym->result->ns->proc_name | |
5426 | && strcmp ("ppr@", sym->result->name) == 0) | |
5427 | { | |
5428 | sym->result->attr.proc_pointer = 1; | |
5429 | sym->attr.pointer = 0; | |
524af0d6 | 5430 | return true; |
3070bab4 JW |
5431 | } |
5432 | else | |
524af0d6 | 5433 | return false; |
3070bab4 JW |
5434 | } |
5435 | ||
5436 | ||
713485cc JW |
5437 | /* Match the interface for a PROCEDURE declaration, |
5438 | including brackets (R1212). */ | |
69773742 JW |
5439 | |
5440 | static match | |
713485cc | 5441 | match_procedure_interface (gfc_symbol **proc_if) |
69773742 JW |
5442 | { |
5443 | match m; | |
3276e0b3 | 5444 | gfc_symtree *st; |
69773742 | 5445 | locus old_loc, entry_loc; |
3276e0b3 PT |
5446 | gfc_namespace *old_ns = gfc_current_ns; |
5447 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
69773742 | 5448 | |
3276e0b3 | 5449 | old_loc = entry_loc = gfc_current_locus; |
69773742 JW |
5450 | gfc_clear_ts (¤t_ts); |
5451 | ||
5452 | if (gfc_match (" (") != MATCH_YES) | |
5453 | { | |
5454 | gfc_current_locus = entry_loc; | |
5455 | return MATCH_NO; | |
5456 | } | |
5457 | ||
5458 | /* Get the type spec. for the procedure interface. */ | |
5459 | old_loc = gfc_current_locus; | |
e74f1cc8 | 5460 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
f4256439 | 5461 | gfc_gobble_whitespace (); |
8fc541d3 | 5462 | if (m == MATCH_YES || (m == MATCH_NO && gfc_peek_ascii_char () == ')')) |
69773742 JW |
5463 | goto got_ts; |
5464 | ||
5465 | if (m == MATCH_ERROR) | |
5466 | return m; | |
5467 | ||
3276e0b3 | 5468 | /* Procedure interface is itself a procedure. */ |
69773742 | 5469 | gfc_current_locus = old_loc; |
3276e0b3 | 5470 | m = gfc_match_name (name); |
69773742 | 5471 | |
3276e0b3 PT |
5472 | /* First look to see if it is already accessible in the current |
5473 | namespace because it is use associated or contained. */ | |
5474 | st = NULL; | |
5475 | if (gfc_find_sym_tree (name, NULL, 0, &st)) | |
5476 | return MATCH_ERROR; | |
5477 | ||
5478 | /* If it is still not found, then try the parent namespace, if it | |
5479 | exists and create the symbol there if it is still not found. */ | |
5480 | if (gfc_current_ns->parent) | |
5481 | gfc_current_ns = gfc_current_ns->parent; | |
5482 | if (st == NULL && gfc_get_ha_sym_tree (name, &st)) | |
5483 | return MATCH_ERROR; | |
5484 | ||
5485 | gfc_current_ns = old_ns; | |
5486 | *proc_if = st->n.sym; | |
69773742 | 5487 | |
713485cc | 5488 | if (*proc_if) |
69773742 | 5489 | { |
713485cc | 5490 | (*proc_if)->refs++; |
bb343a6c TB |
5491 | /* Resolve interface if possible. That way, attr.procedure is only set |
5492 | if it is declared by a later procedure-declaration-stmt, which is | |
0e8d854e | 5493 | invalid per F08:C1216 (cf. resolve_procedure_interface). */ |
d73e0ccf JD |
5494 | while ((*proc_if)->ts.interface |
5495 | && *proc_if != (*proc_if)->ts.interface) | |
713485cc | 5496 | *proc_if = (*proc_if)->ts.interface; |
bb343a6c | 5497 | |
0e8d854e JW |
5498 | if ((*proc_if)->attr.flavor == FL_UNKNOWN |
5499 | && (*proc_if)->ts.type == BT_UNKNOWN | |
70112e2a | 5500 | && !gfc_add_flavor (&(*proc_if)->attr, FL_PROCEDURE, |
524af0d6 | 5501 | (*proc_if)->name, NULL)) |
0e8d854e | 5502 | return MATCH_ERROR; |
69773742 JW |
5503 | } |
5504 | ||
5505 | got_ts: | |
69773742 JW |
5506 | if (gfc_match (" )") != MATCH_YES) |
5507 | { | |
5508 | gfc_current_locus = entry_loc; | |
5509 | return MATCH_NO; | |
5510 | } | |
5511 | ||
713485cc JW |
5512 | return MATCH_YES; |
5513 | } | |
5514 | ||
5515 | ||
5516 | /* Match a PROCEDURE declaration (R1211). */ | |
5517 | ||
5518 | static match | |
5519 | match_procedure_decl (void) | |
5520 | { | |
5521 | match m; | |
5522 | gfc_symbol *sym, *proc_if = NULL; | |
5523 | int num; | |
5524 | gfc_expr *initializer = NULL; | |
5525 | ||
1cc0e193 | 5526 | /* Parse interface (with brackets). */ |
713485cc JW |
5527 | m = match_procedure_interface (&proc_if); |
5528 | if (m != MATCH_YES) | |
5529 | return m; | |
5530 | ||
5531 | /* Parse attributes (with colons). */ | |
69773742 JW |
5532 | m = match_attr_spec(); |
5533 | if (m == MATCH_ERROR) | |
5534 | return MATCH_ERROR; | |
5535 | ||
0859be17 TB |
5536 | if (proc_if && proc_if->attr.is_bind_c && !current_attr.is_bind_c) |
5537 | { | |
5538 | current_attr.is_bind_c = 1; | |
5539 | has_name_equals = 0; | |
5540 | curr_binding_label = NULL; | |
5541 | } | |
5542 | ||
69773742 JW |
5543 | /* Get procedure symbols. */ |
5544 | for(num=1;;num++) | |
5545 | { | |
69773742 JW |
5546 | m = gfc_match_symbol (&sym, 0); |
5547 | if (m == MATCH_NO) | |
5548 | goto syntax; | |
5549 | else if (m == MATCH_ERROR) | |
5550 | return m; | |
5551 | ||
5552 | /* Add current_attr to the symbol attributes. */ | |
524af0d6 | 5553 | if (!gfc_copy_attr (&sym->attr, ¤t_attr, NULL)) |
69773742 JW |
5554 | return MATCH_ERROR; |
5555 | ||
5556 | if (sym->attr.is_bind_c) | |
5557 | { | |
5558 | /* Check for C1218. */ | |
5559 | if (!proc_if || !proc_if->attr.is_bind_c) | |
5560 | { | |
5561 | gfc_error ("BIND(C) attribute at %C requires " | |
5562 | "an interface with BIND(C)"); | |
5563 | return MATCH_ERROR; | |
5564 | } | |
5565 | /* Check for C1217. */ | |
5566 | if (has_name_equals && sym->attr.pointer) | |
5567 | { | |
5568 | gfc_error ("BIND(C) procedure with NAME may not have " | |
5569 | "POINTER attribute at %C"); | |
5570 | return MATCH_ERROR; | |
5571 | } | |
5572 | if (has_name_equals && sym->attr.dummy) | |
5573 | { | |
5574 | gfc_error ("Dummy procedure at %C may not have " | |
5575 | "BIND(C) attribute with NAME"); | |
5576 | return MATCH_ERROR; | |
5577 | } | |
5578 | /* Set binding label for BIND(C). */ | |
524af0d6 | 5579 | if (!set_binding_label (&sym->binding_label, sym->name, num)) |
69773742 JW |
5580 | return MATCH_ERROR; |
5581 | } | |
5582 | ||
524af0d6 | 5583 | if (!gfc_add_external (&sym->attr, NULL)) |
69773742 | 5584 | return MATCH_ERROR; |
3070bab4 | 5585 | |
524af0d6 | 5586 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
5587 | sym = sym->result; |
5588 | ||
524af0d6 | 5589 | if (!gfc_add_proc (&sym->attr, sym->name, NULL)) |
69773742 JW |
5590 | return MATCH_ERROR; |
5591 | ||
5592 | /* Set interface. */ | |
5593 | if (proc_if != NULL) | |
6cc309c9 | 5594 | { |
1d146030 JW |
5595 | if (sym->ts.type != BT_UNKNOWN) |
5596 | { | |
c4100eae | 5597 | gfc_error ("Procedure %qs at %L already has basic type of %s", |
1d146030 JW |
5598 | sym->name, &gfc_current_locus, |
5599 | gfc_basic_typename (sym->ts.type)); | |
5600 | return MATCH_ERROR; | |
5601 | } | |
32d99e68 | 5602 | sym->ts.interface = proc_if; |
6cc309c9 | 5603 | sym->attr.untyped = 1; |
c73b6478 | 5604 | sym->attr.if_source = IFSRC_IFBODY; |
6cc309c9 | 5605 | } |
69773742 JW |
5606 | else if (current_ts.type != BT_UNKNOWN) |
5607 | { | |
524af0d6 | 5608 | if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
1d146030 | 5609 | return MATCH_ERROR; |
32d99e68 JW |
5610 | sym->ts.interface = gfc_new_symbol ("", gfc_current_ns); |
5611 | sym->ts.interface->ts = current_ts; | |
d91909c0 | 5612 | sym->ts.interface->attr.flavor = FL_PROCEDURE; |
32d99e68 | 5613 | sym->ts.interface->attr.function = 1; |
d91909c0 | 5614 | sym->attr.function = 1; |
c73b6478 | 5615 | sym->attr.if_source = IFSRC_UNKNOWN; |
69773742 JW |
5616 | } |
5617 | ||
8fb74da4 JW |
5618 | if (gfc_match (" =>") == MATCH_YES) |
5619 | { | |
5620 | if (!current_attr.pointer) | |
5621 | { | |
5622 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
5623 | m = MATCH_ERROR; | |
5624 | goto cleanup; | |
5625 | } | |
5626 | ||
80f95228 | 5627 | m = match_pointer_init (&initializer, 1); |
8fb74da4 JW |
5628 | if (m != MATCH_YES) |
5629 | goto cleanup; | |
5630 | ||
524af0d6 | 5631 | if (!add_init_expr_to_sym (sym->name, &initializer, &gfc_current_locus)) |
8fb74da4 JW |
5632 | goto cleanup; |
5633 | ||
5634 | } | |
5635 | ||
69773742 JW |
5636 | if (gfc_match_eos () == MATCH_YES) |
5637 | return MATCH_YES; | |
5638 | if (gfc_match_char (',') != MATCH_YES) | |
5639 | goto syntax; | |
5640 | } | |
5641 | ||
5642 | syntax: | |
5643 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
5644 | return MATCH_ERROR; | |
8fb74da4 JW |
5645 | |
5646 | cleanup: | |
5647 | /* Free stuff up and return. */ | |
5648 | gfc_free_expr (initializer); | |
5649 | return m; | |
69773742 JW |
5650 | } |
5651 | ||
5652 | ||
713485cc JW |
5653 | static match |
5654 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc); | |
5655 | ||
5656 | ||
5657 | /* Match a procedure pointer component declaration (R445). */ | |
5658 | ||
5659 | static match | |
5660 | match_ppc_decl (void) | |
5661 | { | |
5662 | match m; | |
5663 | gfc_symbol *proc_if = NULL; | |
5664 | gfc_typespec ts; | |
5665 | int num; | |
5666 | gfc_component *c; | |
5667 | gfc_expr *initializer = NULL; | |
5668 | gfc_typebound_proc* tb; | |
5669 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5670 | ||
5671 | /* Parse interface (with brackets). */ | |
5672 | m = match_procedure_interface (&proc_if); | |
5673 | if (m != MATCH_YES) | |
5674 | goto syntax; | |
5675 | ||
5676 | /* Parse attributes. */ | |
5677 | tb = XCNEW (gfc_typebound_proc); | |
5678 | tb->where = gfc_current_locus; | |
5679 | m = match_binding_attributes (tb, false, true); | |
5680 | if (m == MATCH_ERROR) | |
5681 | return m; | |
5682 | ||
713485cc JW |
5683 | gfc_clear_attr (¤t_attr); |
5684 | current_attr.procedure = 1; | |
5685 | current_attr.proc_pointer = 1; | |
5686 | current_attr.access = tb->access; | |
5687 | current_attr.flavor = FL_PROCEDURE; | |
5688 | ||
5689 | /* Match the colons (required). */ | |
5690 | if (gfc_match (" ::") != MATCH_YES) | |
5691 | { | |
a4d9b221 | 5692 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
713485cc JW |
5693 | return MATCH_ERROR; |
5694 | } | |
5695 | ||
5696 | /* Check for C450. */ | |
5697 | if (!tb->nopass && proc_if == NULL) | |
5698 | { | |
5699 | gfc_error("NOPASS or explicit interface required at %C"); | |
5700 | return MATCH_ERROR; | |
5701 | } | |
5702 | ||
524af0d6 | 5703 | if (!gfc_notify_std (GFC_STD_F2003, "Procedure pointer component at %C")) |
3212c187 SK |
5704 | return MATCH_ERROR; |
5705 | ||
713485cc JW |
5706 | /* Match PPC names. */ |
5707 | ts = current_ts; | |
5708 | for(num=1;;num++) | |
5709 | { | |
5710 | m = gfc_match_name (name); | |
5711 | if (m == MATCH_NO) | |
5712 | goto syntax; | |
5713 | else if (m == MATCH_ERROR) | |
5714 | return m; | |
5715 | ||
524af0d6 | 5716 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
713485cc JW |
5717 | return MATCH_ERROR; |
5718 | ||
5719 | /* Add current_attr to the symbol attributes. */ | |
524af0d6 | 5720 | if (!gfc_copy_attr (&c->attr, ¤t_attr, NULL)) |
713485cc JW |
5721 | return MATCH_ERROR; |
5722 | ||
524af0d6 | 5723 | if (!gfc_add_external (&c->attr, NULL)) |
713485cc JW |
5724 | return MATCH_ERROR; |
5725 | ||
524af0d6 | 5726 | if (!gfc_add_proc (&c->attr, name, NULL)) |
713485cc JW |
5727 | return MATCH_ERROR; |
5728 | ||
2be03814 TB |
5729 | if (num == 1) |
5730 | c->tb = tb; | |
5731 | else | |
5732 | { | |
5733 | c->tb = XCNEW (gfc_typebound_proc); | |
5734 | c->tb->where = gfc_current_locus; | |
5735 | *c->tb = *tb; | |
5736 | } | |
90661f26 | 5737 | |
713485cc JW |
5738 | /* Set interface. */ |
5739 | if (proc_if != NULL) | |
5740 | { | |
5741 | c->ts.interface = proc_if; | |
5742 | c->attr.untyped = 1; | |
5743 | c->attr.if_source = IFSRC_IFBODY; | |
5744 | } | |
5745 | else if (ts.type != BT_UNKNOWN) | |
5746 | { | |
5747 | c->ts = ts; | |
5748 | c->ts.interface = gfc_new_symbol ("", gfc_current_ns); | |
d7fee03d | 5749 | c->ts.interface->result = c->ts.interface; |
713485cc | 5750 | c->ts.interface->ts = ts; |
d91909c0 | 5751 | c->ts.interface->attr.flavor = FL_PROCEDURE; |
713485cc | 5752 | c->ts.interface->attr.function = 1; |
d91909c0 | 5753 | c->attr.function = 1; |
713485cc JW |
5754 | c->attr.if_source = IFSRC_UNKNOWN; |
5755 | } | |
5756 | ||
5757 | if (gfc_match (" =>") == MATCH_YES) | |
5758 | { | |
80f95228 | 5759 | m = match_pointer_init (&initializer, 1); |
713485cc JW |
5760 | if (m != MATCH_YES) |
5761 | { | |
5762 | gfc_free_expr (initializer); | |
5763 | return m; | |
5764 | } | |
5765 | c->initializer = initializer; | |
5766 | } | |
5767 | ||
5768 | if (gfc_match_eos () == MATCH_YES) | |
5769 | return MATCH_YES; | |
5770 | if (gfc_match_char (',') != MATCH_YES) | |
5771 | goto syntax; | |
5772 | } | |
5773 | ||
5774 | syntax: | |
5775 | gfc_error ("Syntax error in procedure pointer component at %C"); | |
5776 | return MATCH_ERROR; | |
5777 | } | |
5778 | ||
5779 | ||
69773742 JW |
5780 | /* Match a PROCEDURE declaration inside an interface (R1206). */ |
5781 | ||
5782 | static match | |
5783 | match_procedure_in_interface (void) | |
5784 | { | |
5785 | match m; | |
5786 | gfc_symbol *sym; | |
5787 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
a6fcd41a | 5788 | locus old_locus; |
69773742 JW |
5789 | |
5790 | if (current_interface.type == INTERFACE_NAMELESS | |
5791 | || current_interface.type == INTERFACE_ABSTRACT) | |
5792 | { | |
5793 | gfc_error ("PROCEDURE at %C must be in a generic interface"); | |
5794 | return MATCH_ERROR; | |
5795 | } | |
5796 | ||
a6fcd41a TB |
5797 | /* Check if the F2008 optional double colon appears. */ |
5798 | gfc_gobble_whitespace (); | |
5799 | old_locus = gfc_current_locus; | |
5800 | if (gfc_match ("::") == MATCH_YES) | |
5801 | { | |
524af0d6 JB |
5802 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
5803 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
a6fcd41a TB |
5804 | return MATCH_ERROR; |
5805 | } | |
5806 | else | |
5807 | gfc_current_locus = old_locus; | |
5808 | ||
69773742 JW |
5809 | for(;;) |
5810 | { | |
5811 | m = gfc_match_name (name); | |
5812 | if (m == MATCH_NO) | |
5813 | goto syntax; | |
5814 | else if (m == MATCH_ERROR) | |
5815 | return m; | |
5816 | if (gfc_get_symbol (name, gfc_current_ns->parent, &sym)) | |
5817 | return MATCH_ERROR; | |
5818 | ||
524af0d6 | 5819 | if (!gfc_add_interface (sym)) |
69773742 JW |
5820 | return MATCH_ERROR; |
5821 | ||
69773742 JW |
5822 | if (gfc_match_eos () == MATCH_YES) |
5823 | break; | |
5824 | if (gfc_match_char (',') != MATCH_YES) | |
5825 | goto syntax; | |
5826 | } | |
5827 | ||
5828 | return MATCH_YES; | |
5829 | ||
5830 | syntax: | |
5831 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
5832 | return MATCH_ERROR; | |
5833 | } | |
5834 | ||
5835 | ||
5836 | /* General matcher for PROCEDURE declarations. */ | |
5837 | ||
30b608eb DK |
5838 | static match match_procedure_in_type (void); |
5839 | ||
69773742 JW |
5840 | match |
5841 | gfc_match_procedure (void) | |
5842 | { | |
5843 | match m; | |
5844 | ||
5845 | switch (gfc_current_state ()) | |
5846 | { | |
5847 | case COMP_NONE: | |
5848 | case COMP_PROGRAM: | |
5849 | case COMP_MODULE: | |
4668d6f9 | 5850 | case COMP_SUBMODULE: |
69773742 JW |
5851 | case COMP_SUBROUTINE: |
5852 | case COMP_FUNCTION: | |
3547d57e | 5853 | case COMP_BLOCK: |
69773742 JW |
5854 | m = match_procedure_decl (); |
5855 | break; | |
5856 | case COMP_INTERFACE: | |
5857 | m = match_procedure_in_interface (); | |
5858 | break; | |
5859 | case COMP_DERIVED: | |
713485cc JW |
5860 | m = match_ppc_decl (); |
5861 | break; | |
30b608eb DK |
5862 | case COMP_DERIVED_CONTAINS: |
5863 | m = match_procedure_in_type (); | |
5864 | break; | |
69773742 JW |
5865 | default: |
5866 | return MATCH_NO; | |
5867 | } | |
5868 | ||
5869 | if (m != MATCH_YES) | |
5870 | return m; | |
5871 | ||
524af0d6 | 5872 | if (!gfc_notify_std (GFC_STD_F2003, "PROCEDURE statement at %C")) |
69773742 JW |
5873 | return MATCH_ERROR; |
5874 | ||
5875 | return m; | |
5876 | } | |
5877 | ||
5878 | ||
c3005b0f DK |
5879 | /* Warn if a matched procedure has the same name as an intrinsic; this is |
5880 | simply a wrapper around gfc_warn_intrinsic_shadow that interprets the current | |
5881 | parser-state-stack to find out whether we're in a module. */ | |
5882 | ||
5883 | static void | |
73e42eef | 5884 | do_warn_intrinsic_shadow (const gfc_symbol* sym, bool func) |
c3005b0f DK |
5885 | { |
5886 | bool in_module; | |
5887 | ||
5888 | in_module = (gfc_state_stack->previous | |
4668d6f9 PT |
5889 | && (gfc_state_stack->previous->state == COMP_MODULE |
5890 | || gfc_state_stack->previous->state == COMP_SUBMODULE)); | |
c3005b0f DK |
5891 | |
5892 | gfc_warn_intrinsic_shadow (sym, in_module, func); | |
5893 | } | |
5894 | ||
5895 | ||
6de9cd9a DN |
5896 | /* Match a function declaration. */ |
5897 | ||
5898 | match | |
5899 | gfc_match_function_decl (void) | |
5900 | { | |
5901 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5902 | gfc_symbol *sym, *result; | |
5903 | locus old_loc; | |
5904 | match m; | |
a8b3b0b6 | 5905 | match suffix_match; |
f5acf0f2 | 5906 | match found_match; /* Status returned by match func. */ |
6de9cd9a DN |
5907 | |
5908 | if (gfc_current_state () != COMP_NONE | |
5909 | && gfc_current_state () != COMP_INTERFACE | |
5910 | && gfc_current_state () != COMP_CONTAINS) | |
5911 | return MATCH_NO; | |
5912 | ||
5913 | gfc_clear_ts (¤t_ts); | |
5914 | ||
63645982 | 5915 | old_loc = gfc_current_locus; |
6de9cd9a | 5916 | |
1c8bcdf7 | 5917 | m = gfc_match_prefix (¤t_ts); |
6de9cd9a DN |
5918 | if (m != MATCH_YES) |
5919 | { | |
63645982 | 5920 | gfc_current_locus = old_loc; |
6de9cd9a DN |
5921 | return m; |
5922 | } | |
5923 | ||
5924 | if (gfc_match ("function% %n", name) != MATCH_YES) | |
5925 | { | |
63645982 | 5926 | gfc_current_locus = old_loc; |
6de9cd9a DN |
5927 | return MATCH_NO; |
5928 | } | |
4668d6f9 | 5929 | |
1a492601 | 5930 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 5931 | return MATCH_ERROR; |
3070bab4 | 5932 | |
524af0d6 | 5933 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
5934 | sym = sym->result; |
5935 | ||
4668d6f9 PT |
5936 | if (current_attr.module_procedure) |
5937 | sym->attr.module_procedure = 1; | |
5938 | ||
6de9cd9a DN |
5939 | gfc_new_block = sym; |
5940 | ||
5941 | m = gfc_match_formal_arglist (sym, 0, 0); | |
5942 | if (m == MATCH_NO) | |
2b9a33ae TS |
5943 | { |
5944 | gfc_error ("Expected formal argument list in function " | |
636dff67 | 5945 | "definition at %C"); |
2b9a33ae TS |
5946 | m = MATCH_ERROR; |
5947 | goto cleanup; | |
5948 | } | |
6de9cd9a DN |
5949 | else if (m == MATCH_ERROR) |
5950 | goto cleanup; | |
5951 | ||
5952 | result = NULL; | |
5953 | ||
a8b3b0b6 CR |
5954 | /* According to the draft, the bind(c) and result clause can |
5955 | come in either order after the formal_arg_list (i.e., either | |
5956 | can be first, both can exist together or by themselves or neither | |
5957 | one). Therefore, the match_result can't match the end of the | |
5958 | string, and check for the bind(c) or result clause in either order. */ | |
5959 | found_match = gfc_match_eos (); | |
5960 | ||
5961 | /* Make sure that it isn't already declared as BIND(C). If it is, it | |
5962 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5963 | not allowed for procedures. */ | |
5964 | if (sym->attr.is_bind_c == 1) | |
5965 | { | |
5966 | sym->attr.is_bind_c = 0; | |
5967 | if (sym->old_symbol != NULL) | |
5968 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5969 | "variables or common blocks", | |
5970 | &(sym->old_symbol->declared_at)); | |
5971 | else | |
5972 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5973 | "variables or common blocks", &gfc_current_locus); | |
6de9cd9a DN |
5974 | } |
5975 | ||
a8b3b0b6 | 5976 | if (found_match != MATCH_YES) |
6de9cd9a | 5977 | { |
a8b3b0b6 CR |
5978 | /* If we haven't found the end-of-statement, look for a suffix. */ |
5979 | suffix_match = gfc_match_suffix (sym, &result); | |
5980 | if (suffix_match == MATCH_YES) | |
5981 | /* Need to get the eos now. */ | |
5982 | found_match = gfc_match_eos (); | |
5983 | else | |
5984 | found_match = suffix_match; | |
6de9cd9a DN |
5985 | } |
5986 | ||
a8b3b0b6 CR |
5987 | if(found_match != MATCH_YES) |
5988 | m = MATCH_ERROR; | |
6de9cd9a DN |
5989 | else |
5990 | { | |
a8b3b0b6 CR |
5991 | /* Make changes to the symbol. */ |
5992 | m = MATCH_ERROR; | |
f5acf0f2 | 5993 | |
524af0d6 | 5994 | if (!gfc_add_function (&sym->attr, sym->name, NULL)) |
a8b3b0b6 | 5995 | goto cleanup; |
f5acf0f2 | 5996 | |
70112e2a | 5997 | if (!gfc_missing_attr (&sym->attr, NULL)) |
a8b3b0b6 | 5998 | goto cleanup; |
6de9cd9a | 5999 | |
70112e2a PT |
6000 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
6001 | { | |
6002 | if(!sym->attr.module_procedure) | |
6003 | goto cleanup; | |
6004 | else | |
6005 | gfc_error_check (); | |
6006 | } | |
6007 | ||
a99d95a2 | 6008 | /* Delay matching the function characteristics until after the |
1c8bcdf7 | 6009 | specification block by signalling kind=-1. */ |
a99d95a2 PT |
6010 | sym->declared_at = old_loc; |
6011 | if (current_ts.type != BT_UNKNOWN) | |
6012 | current_ts.kind = -1; | |
6013 | else | |
6014 | current_ts.kind = 0; | |
1c8bcdf7 | 6015 | |
a8b3b0b6 CR |
6016 | if (result == NULL) |
6017 | { | |
6de7294f | 6018 | if (current_ts.type != BT_UNKNOWN |
524af0d6 | 6019 | && !gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
6de7294f | 6020 | goto cleanup; |
a8b3b0b6 CR |
6021 | sym->result = sym; |
6022 | } | |
6023 | else | |
6024 | { | |
6de7294f | 6025 | if (current_ts.type != BT_UNKNOWN |
524af0d6 | 6026 | && !gfc_add_type (result, ¤t_ts, &gfc_current_locus)) |
6de7294f | 6027 | goto cleanup; |
a8b3b0b6 CR |
6028 | sym->result = result; |
6029 | } | |
6030 | ||
70112e2a | 6031 | |
c3005b0f | 6032 | /* Warn if this procedure has the same name as an intrinsic. */ |
73e42eef | 6033 | do_warn_intrinsic_shadow (sym, true); |
c3005b0f | 6034 | |
a8b3b0b6 CR |
6035 | return MATCH_YES; |
6036 | } | |
6de9cd9a DN |
6037 | |
6038 | cleanup: | |
63645982 | 6039 | gfc_current_locus = old_loc; |
6de9cd9a DN |
6040 | return m; |
6041 | } | |
6042 | ||
636dff67 SK |
6043 | |
6044 | /* This is mostly a copy of parse.c(add_global_procedure) but modified to | |
6045 | pass the name of the entry, rather than the gfc_current_block name, and | |
6046 | to return false upon finding an existing global entry. */ | |
68ea355b PT |
6047 | |
6048 | static bool | |
3a43b5b3 TB |
6049 | add_global_entry (const char *name, const char *binding_label, bool sub, |
6050 | locus *where) | |
68ea355b PT |
6051 | { |
6052 | gfc_gsymbol *s; | |
32e8bb8e | 6053 | enum gfc_symbol_type type; |
68ea355b | 6054 | |
7389bce6 | 6055 | type = sub ? GSYM_SUBROUTINE : GSYM_FUNCTION; |
68ea355b | 6056 | |
f11de7c5 TB |
6057 | /* Only in Fortran 2003: For procedures with a binding label also the Fortran |
6058 | name is a global identifier. */ | |
6059 | if (!binding_label || gfc_notification_std (GFC_STD_F2008)) | |
68ea355b | 6060 | { |
f11de7c5 TB |
6061 | s = gfc_get_gsymbol (name); |
6062 | ||
6063 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
6064 | { | |
3a43b5b3 | 6065 | gfc_global_used (s, where); |
f11de7c5 TB |
6066 | return false; |
6067 | } | |
6068 | else | |
6069 | { | |
6070 | s->type = type; | |
77f8682b | 6071 | s->sym_name = name; |
3a43b5b3 | 6072 | s->where = *where; |
f11de7c5 TB |
6073 | s->defined = 1; |
6074 | s->ns = gfc_current_ns; | |
6075 | } | |
68ea355b | 6076 | } |
f11de7c5 TB |
6077 | |
6078 | /* Don't add the symbol multiple times. */ | |
6079 | if (binding_label | |
6080 | && (!gfc_notification_std (GFC_STD_F2008) | |
6081 | || strcmp (name, binding_label) != 0)) | |
6082 | { | |
6083 | s = gfc_get_gsymbol (binding_label); | |
6084 | ||
6085 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
6086 | { | |
3a43b5b3 | 6087 | gfc_global_used (s, where); |
f11de7c5 TB |
6088 | return false; |
6089 | } | |
6090 | else | |
6091 | { | |
6092 | s->type = type; | |
77f8682b | 6093 | s->sym_name = name; |
f11de7c5 | 6094 | s->binding_label = binding_label; |
3a43b5b3 | 6095 | s->where = *where; |
f11de7c5 TB |
6096 | s->defined = 1; |
6097 | s->ns = gfc_current_ns; | |
6098 | } | |
6099 | } | |
6100 | ||
6101 | return true; | |
68ea355b | 6102 | } |
6de9cd9a | 6103 | |
636dff67 | 6104 | |
6de9cd9a DN |
6105 | /* Match an ENTRY statement. */ |
6106 | ||
6107 | match | |
6108 | gfc_match_entry (void) | |
6109 | { | |
3d79abbd PB |
6110 | gfc_symbol *proc; |
6111 | gfc_symbol *result; | |
6112 | gfc_symbol *entry; | |
6de9cd9a DN |
6113 | char name[GFC_MAX_SYMBOL_LEN + 1]; |
6114 | gfc_compile_state state; | |
6115 | match m; | |
3d79abbd | 6116 | gfc_entry_list *el; |
c96cfa49 | 6117 | locus old_loc; |
1a492601 | 6118 | bool module_procedure; |
bc3e7a8c TB |
6119 | char peek_char; |
6120 | match is_bind_c; | |
6de9cd9a DN |
6121 | |
6122 | m = gfc_match_name (name); | |
6123 | if (m != MATCH_YES) | |
6124 | return m; | |
6125 | ||
524af0d6 | 6126 | if (!gfc_notify_std (GFC_STD_F2008_OBS, "ENTRY statement at %C")) |
58fc89f6 TB |
6127 | return MATCH_ERROR; |
6128 | ||
3d79abbd | 6129 | state = gfc_current_state (); |
4c93c95a | 6130 | if (state != COMP_SUBROUTINE && state != COMP_FUNCTION) |
3d79abbd | 6131 | { |
4c93c95a FXC |
6132 | switch (state) |
6133 | { | |
6134 | case COMP_PROGRAM: | |
6135 | gfc_error ("ENTRY statement at %C cannot appear within a PROGRAM"); | |
6136 | break; | |
6137 | case COMP_MODULE: | |
6138 | gfc_error ("ENTRY statement at %C cannot appear within a MODULE"); | |
6139 | break; | |
4668d6f9 PT |
6140 | case COMP_SUBMODULE: |
6141 | gfc_error ("ENTRY statement at %C cannot appear within a SUBMODULE"); | |
6142 | break; | |
4c93c95a | 6143 | case COMP_BLOCK_DATA: |
636dff67 SK |
6144 | gfc_error ("ENTRY statement at %C cannot appear within " |
6145 | "a BLOCK DATA"); | |
4c93c95a FXC |
6146 | break; |
6147 | case COMP_INTERFACE: | |
636dff67 SK |
6148 | gfc_error ("ENTRY statement at %C cannot appear within " |
6149 | "an INTERFACE"); | |
4c93c95a | 6150 | break; |
f6288c24 FR |
6151 | case COMP_STRUCTURE: |
6152 | gfc_error ("ENTRY statement at %C cannot appear within " | |
6153 | "a STRUCTURE block"); | |
6154 | break; | |
4c93c95a | 6155 | case COMP_DERIVED: |
636dff67 SK |
6156 | gfc_error ("ENTRY statement at %C cannot appear within " |
6157 | "a DERIVED TYPE block"); | |
4c93c95a FXC |
6158 | break; |
6159 | case COMP_IF: | |
636dff67 SK |
6160 | gfc_error ("ENTRY statement at %C cannot appear within " |
6161 | "an IF-THEN block"); | |
4c93c95a FXC |
6162 | break; |
6163 | case COMP_DO: | |
8c6a85e3 | 6164 | case COMP_DO_CONCURRENT: |
636dff67 SK |
6165 | gfc_error ("ENTRY statement at %C cannot appear within " |
6166 | "a DO block"); | |
4c93c95a FXC |
6167 | break; |
6168 | case COMP_SELECT: | |
636dff67 SK |
6169 | gfc_error ("ENTRY statement at %C cannot appear within " |
6170 | "a SELECT block"); | |
4c93c95a FXC |
6171 | break; |
6172 | case COMP_FORALL: | |
636dff67 SK |
6173 | gfc_error ("ENTRY statement at %C cannot appear within " |
6174 | "a FORALL block"); | |
4c93c95a FXC |
6175 | break; |
6176 | case COMP_WHERE: | |
636dff67 SK |
6177 | gfc_error ("ENTRY statement at %C cannot appear within " |
6178 | "a WHERE block"); | |
4c93c95a FXC |
6179 | break; |
6180 | case COMP_CONTAINS: | |
636dff67 SK |
6181 | gfc_error ("ENTRY statement at %C cannot appear within " |
6182 | "a contained subprogram"); | |
4c93c95a FXC |
6183 | break; |
6184 | default: | |
fce523bf | 6185 | gfc_error ("Unexpected ENTRY statement at %C"); |
4c93c95a | 6186 | } |
3d79abbd PB |
6187 | return MATCH_ERROR; |
6188 | } | |
6189 | ||
5f0ba745 SK |
6190 | if ((state == COMP_SUBROUTINE || state == COMP_FUNCTION) |
6191 | && gfc_state_stack->previous->state == COMP_INTERFACE) | |
6192 | { | |
6193 | gfc_error ("ENTRY statement at %C cannot appear within an INTERFACE"); | |
6194 | return MATCH_ERROR; | |
6195 | } | |
6196 | ||
1a492601 | 6197 | module_procedure = gfc_current_ns->parent != NULL |
636dff67 SK |
6198 | && gfc_current_ns->parent->proc_name |
6199 | && gfc_current_ns->parent->proc_name->attr.flavor | |
6200 | == FL_MODULE; | |
1a492601 | 6201 | |
3d79abbd PB |
6202 | if (gfc_current_ns->parent != NULL |
6203 | && gfc_current_ns->parent->proc_name | |
1a492601 | 6204 | && !module_procedure) |
3d79abbd PB |
6205 | { |
6206 | gfc_error("ENTRY statement at %C cannot appear in a " | |
6207 | "contained procedure"); | |
6208 | return MATCH_ERROR; | |
6209 | } | |
6210 | ||
1a492601 PT |
6211 | /* Module function entries need special care in get_proc_name |
6212 | because previous references within the function will have | |
6213 | created symbols attached to the current namespace. */ | |
6214 | if (get_proc_name (name, &entry, | |
6215 | gfc_current_ns->parent != NULL | |
ecd3b73c | 6216 | && module_procedure)) |
6de9cd9a DN |
6217 | return MATCH_ERROR; |
6218 | ||
3d79abbd PB |
6219 | proc = gfc_current_block (); |
6220 | ||
bc3e7a8c TB |
6221 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
6222 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
6223 | not allowed for procedures. */ | |
6224 | if (entry->attr.is_bind_c == 1) | |
6225 | { | |
6226 | entry->attr.is_bind_c = 0; | |
6227 | if (entry->old_symbol != NULL) | |
6228 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
6229 | "variables or common blocks", | |
6230 | &(entry->old_symbol->declared_at)); | |
6231 | else | |
6232 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
6233 | "variables or common blocks", &gfc_current_locus); | |
6234 | } | |
f5acf0f2 | 6235 | |
bc3e7a8c TB |
6236 | /* Check what next non-whitespace character is so we can tell if there |
6237 | is the required parens if we have a BIND(C). */ | |
3a43b5b3 | 6238 | old_loc = gfc_current_locus; |
bc3e7a8c | 6239 | gfc_gobble_whitespace (); |
8fc541d3 | 6240 | peek_char = gfc_peek_ascii_char (); |
bc3e7a8c | 6241 | |
3d79abbd | 6242 | if (state == COMP_SUBROUTINE) |
6de9cd9a | 6243 | { |
6de9cd9a DN |
6244 | m = gfc_match_formal_arglist (entry, 0, 1); |
6245 | if (m != MATCH_YES) | |
6246 | return MATCH_ERROR; | |
6247 | ||
1eabf70a TB |
6248 | /* Call gfc_match_bind_c with allow_binding_name = true as ENTRY can |
6249 | never be an internal procedure. */ | |
6250 | is_bind_c = gfc_match_bind_c (entry, true); | |
bc3e7a8c TB |
6251 | if (is_bind_c == MATCH_ERROR) |
6252 | return MATCH_ERROR; | |
6253 | if (is_bind_c == MATCH_YES) | |
6254 | { | |
6255 | if (peek_char != '(') | |
6256 | { | |
6257 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
6258 | return MATCH_ERROR; | |
6259 | } | |
70112e2a | 6260 | if (!gfc_add_is_bind_c (&(entry->attr), entry->name, |
524af0d6 | 6261 | &(entry->declared_at), 1)) |
bc3e7a8c TB |
6262 | return MATCH_ERROR; |
6263 | } | |
6264 | ||
f11de7c5 | 6265 | if (!gfc_current_ns->parent |
3a43b5b3 TB |
6266 | && !add_global_entry (name, entry->binding_label, true, |
6267 | &old_loc)) | |
f11de7c5 TB |
6268 | return MATCH_ERROR; |
6269 | ||
6270 | /* An entry in a subroutine. */ | |
524af0d6 JB |
6271 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
6272 | || !gfc_add_subroutine (&entry->attr, entry->name, NULL)) | |
6de9cd9a | 6273 | return MATCH_ERROR; |
3d79abbd PB |
6274 | } |
6275 | else | |
6276 | { | |
c96cfa49 | 6277 | /* An entry in a function. |
636dff67 SK |
6278 | We need to take special care because writing |
6279 | ENTRY f() | |
6280 | as | |
6281 | ENTRY f | |
6282 | is allowed, whereas | |
6283 | ENTRY f() RESULT (r) | |
6284 | can't be written as | |
6285 | ENTRY f RESULT (r). */ | |
c96cfa49 TS |
6286 | if (gfc_match_eos () == MATCH_YES) |
6287 | { | |
6288 | gfc_current_locus = old_loc; | |
6289 | /* Match the empty argument list, and add the interface to | |
6290 | the symbol. */ | |
6291 | m = gfc_match_formal_arglist (entry, 0, 1); | |
6292 | } | |
6293 | else | |
6294 | m = gfc_match_formal_arglist (entry, 0, 0); | |
6295 | ||
6de9cd9a DN |
6296 | if (m != MATCH_YES) |
6297 | return MATCH_ERROR; | |
6298 | ||
6de9cd9a DN |
6299 | result = NULL; |
6300 | ||
6301 | if (gfc_match_eos () == MATCH_YES) | |
6302 | { | |
524af0d6 JB |
6303 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
6304 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
6de9cd9a DN |
6305 | return MATCH_ERROR; |
6306 | ||
d198b59a | 6307 | entry->result = entry; |
6de9cd9a DN |
6308 | } |
6309 | else | |
6310 | { | |
bc3e7a8c | 6311 | m = gfc_match_suffix (entry, &result); |
6de9cd9a DN |
6312 | if (m == MATCH_NO) |
6313 | gfc_syntax_error (ST_ENTRY); | |
6314 | if (m != MATCH_YES) | |
6315 | return MATCH_ERROR; | |
6316 | ||
bc3e7a8c TB |
6317 | if (result) |
6318 | { | |
524af0d6 JB |
6319 | if (!gfc_add_result (&result->attr, result->name, NULL) |
6320 | || !gfc_add_entry (&entry->attr, result->name, NULL) | |
6321 | || !gfc_add_function (&entry->attr, result->name, NULL)) | |
bc3e7a8c TB |
6322 | return MATCH_ERROR; |
6323 | entry->result = result; | |
6324 | } | |
6325 | else | |
6326 | { | |
524af0d6 JB |
6327 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
6328 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
bc3e7a8c TB |
6329 | return MATCH_ERROR; |
6330 | entry->result = entry; | |
6331 | } | |
6de9cd9a | 6332 | } |
f11de7c5 TB |
6333 | |
6334 | if (!gfc_current_ns->parent | |
3a43b5b3 TB |
6335 | && !add_global_entry (name, entry->binding_label, false, |
6336 | &old_loc)) | |
f11de7c5 | 6337 | return MATCH_ERROR; |
6de9cd9a DN |
6338 | } |
6339 | ||
6340 | if (gfc_match_eos () != MATCH_YES) | |
6341 | { | |
6342 | gfc_syntax_error (ST_ENTRY); | |
6343 | return MATCH_ERROR; | |
6344 | } | |
6345 | ||
3d79abbd PB |
6346 | entry->attr.recursive = proc->attr.recursive; |
6347 | entry->attr.elemental = proc->attr.elemental; | |
6348 | entry->attr.pure = proc->attr.pure; | |
6de9cd9a | 6349 | |
3d79abbd PB |
6350 | el = gfc_get_entry_list (); |
6351 | el->sym = entry; | |
6352 | el->next = gfc_current_ns->entries; | |
6353 | gfc_current_ns->entries = el; | |
6354 | if (el->next) | |
6355 | el->id = el->next->id + 1; | |
6356 | else | |
6357 | el->id = 1; | |
6de9cd9a | 6358 | |
3d79abbd PB |
6359 | new_st.op = EXEC_ENTRY; |
6360 | new_st.ext.entry = el; | |
6361 | ||
6362 | return MATCH_YES; | |
6de9cd9a DN |
6363 | } |
6364 | ||
6365 | ||
6366 | /* Match a subroutine statement, including optional prefixes. */ | |
6367 | ||
6368 | match | |
6369 | gfc_match_subroutine (void) | |
6370 | { | |
6371 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6372 | gfc_symbol *sym; | |
6373 | match m; | |
a8b3b0b6 CR |
6374 | match is_bind_c; |
6375 | char peek_char; | |
1eabf70a | 6376 | bool allow_binding_name; |
6de9cd9a DN |
6377 | |
6378 | if (gfc_current_state () != COMP_NONE | |
6379 | && gfc_current_state () != COMP_INTERFACE | |
6380 | && gfc_current_state () != COMP_CONTAINS) | |
6381 | return MATCH_NO; | |
6382 | ||
1c8bcdf7 | 6383 | m = gfc_match_prefix (NULL); |
6de9cd9a DN |
6384 | if (m != MATCH_YES) |
6385 | return m; | |
6386 | ||
6387 | m = gfc_match ("subroutine% %n", name); | |
6388 | if (m != MATCH_YES) | |
6389 | return m; | |
6390 | ||
1a492601 | 6391 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 6392 | return MATCH_ERROR; |
3070bab4 | 6393 | |
7fcd5ad5 | 6394 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if |
1cc0e193 | 6395 | the symbol existed before. */ |
7fcd5ad5 TB |
6396 | sym->declared_at = gfc_current_locus; |
6397 | ||
4668d6f9 PT |
6398 | if (current_attr.module_procedure) |
6399 | sym->attr.module_procedure = 1; | |
6400 | ||
524af0d6 | 6401 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
6402 | sym = sym->result; |
6403 | ||
6de9cd9a DN |
6404 | gfc_new_block = sym; |
6405 | ||
a8b3b0b6 | 6406 | /* Check what next non-whitespace character is so we can tell if there |
bc3e7a8c | 6407 | is the required parens if we have a BIND(C). */ |
a8b3b0b6 | 6408 | gfc_gobble_whitespace (); |
8fc541d3 | 6409 | peek_char = gfc_peek_ascii_char (); |
f5acf0f2 | 6410 | |
524af0d6 | 6411 | if (!gfc_add_subroutine (&sym->attr, sym->name, NULL)) |
6de9cd9a DN |
6412 | return MATCH_ERROR; |
6413 | ||
6414 | if (gfc_match_formal_arglist (sym, 0, 1) != MATCH_YES) | |
6415 | return MATCH_ERROR; | |
6416 | ||
a8b3b0b6 CR |
6417 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
6418 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
6419 | not allowed for procedures. */ | |
6420 | if (sym->attr.is_bind_c == 1) | |
6421 | { | |
6422 | sym->attr.is_bind_c = 0; | |
6423 | if (sym->old_symbol != NULL) | |
6424 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
6425 | "variables or common blocks", | |
6426 | &(sym->old_symbol->declared_at)); | |
6427 | else | |
6428 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
6429 | "variables or common blocks", &gfc_current_locus); | |
6430 | } | |
1eabf70a TB |
6431 | |
6432 | /* C binding names are not allowed for internal procedures. */ | |
6433 | if (gfc_current_state () == COMP_CONTAINS | |
6434 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
6435 | allow_binding_name = false; | |
6436 | else | |
6437 | allow_binding_name = true; | |
6438 | ||
a8b3b0b6 CR |
6439 | /* Here, we are just checking if it has the bind(c) attribute, and if |
6440 | so, then we need to make sure it's all correct. If it doesn't, | |
6441 | we still need to continue matching the rest of the subroutine line. */ | |
1eabf70a | 6442 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
6443 | if (is_bind_c == MATCH_ERROR) |
6444 | { | |
6445 | /* There was an attempt at the bind(c), but it was wrong. An | |
6446 | error message should have been printed w/in the gfc_match_bind_c | |
6447 | so here we'll just return the MATCH_ERROR. */ | |
6448 | return MATCH_ERROR; | |
6449 | } | |
6450 | ||
6451 | if (is_bind_c == MATCH_YES) | |
6452 | { | |
1eabf70a | 6453 | /* The following is allowed in the Fortran 2008 draft. */ |
01f4fff1 | 6454 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 6455 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
524af0d6 JB |
6456 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
6457 | "at %L may not be specified for an internal " | |
6458 | "procedure", &gfc_current_locus)) | |
1eabf70a TB |
6459 | return MATCH_ERROR; |
6460 | ||
a8b3b0b6 CR |
6461 | if (peek_char != '(') |
6462 | { | |
6463 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
6464 | return MATCH_ERROR; | |
6465 | } | |
70112e2a | 6466 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, |
524af0d6 | 6467 | &(sym->declared_at), 1)) |
a8b3b0b6 CR |
6468 | return MATCH_ERROR; |
6469 | } | |
f5acf0f2 | 6470 | |
6de9cd9a DN |
6471 | if (gfc_match_eos () != MATCH_YES) |
6472 | { | |
6473 | gfc_syntax_error (ST_SUBROUTINE); | |
6474 | return MATCH_ERROR; | |
6475 | } | |
6476 | ||
524af0d6 | 6477 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
70112e2a PT |
6478 | { |
6479 | if(!sym->attr.module_procedure) | |
6480 | return MATCH_ERROR; | |
6481 | else | |
6482 | gfc_error_check (); | |
6483 | } | |
6de9cd9a | 6484 | |
c3005b0f | 6485 | /* Warn if it has the same name as an intrinsic. */ |
73e42eef | 6486 | do_warn_intrinsic_shadow (sym, false); |
c3005b0f | 6487 | |
6de9cd9a DN |
6488 | return MATCH_YES; |
6489 | } | |
6490 | ||
6491 | ||
3b37ccd4 FXC |
6492 | /* Check that the NAME identifier in a BIND attribute or statement |
6493 | is conform to C identifier rules. */ | |
6494 | ||
6495 | match | |
6496 | check_bind_name_identifier (char **name) | |
6497 | { | |
6498 | char *n = *name, *p; | |
6499 | ||
6500 | /* Remove leading spaces. */ | |
6501 | while (*n == ' ') | |
6502 | n++; | |
6503 | ||
6504 | /* On an empty string, free memory and set name to NULL. */ | |
6505 | if (*n == '\0') | |
6506 | { | |
6507 | free (*name); | |
6508 | *name = NULL; | |
6509 | return MATCH_YES; | |
6510 | } | |
6511 | ||
6512 | /* Remove trailing spaces. */ | |
6513 | p = n + strlen(n) - 1; | |
6514 | while (*p == ' ') | |
6515 | *(p--) = '\0'; | |
6516 | ||
6517 | /* Insert the identifier into the symbol table. */ | |
6518 | p = xstrdup (n); | |
6519 | free (*name); | |
6520 | *name = p; | |
6521 | ||
6522 | /* Now check that identifier is valid under C rules. */ | |
6523 | if (ISDIGIT (*p)) | |
6524 | { | |
6525 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
6526 | return MATCH_ERROR; | |
6527 | } | |
6528 | ||
6529 | for (; *p; p++) | |
6530 | if (!(ISALNUM (*p) || *p == '_' || *p == '$')) | |
6531 | { | |
6532 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
6533 | return MATCH_ERROR; | |
6534 | } | |
6535 | ||
6536 | return MATCH_YES; | |
6537 | } | |
6538 | ||
6539 | ||
a8b3b0b6 CR |
6540 | /* Match a BIND(C) specifier, with the optional 'name=' specifier if |
6541 | given, and set the binding label in either the given symbol (if not | |
86bf520d | 6542 | NULL), or in the current_ts. The symbol may be NULL because we may |
a8b3b0b6 CR |
6543 | encounter the BIND(C) before the declaration itself. Return |
6544 | MATCH_NO if what we're looking at isn't a BIND(C) specifier, | |
6545 | MATCH_ERROR if it is a BIND(C) clause but an error was encountered, | |
6546 | or MATCH_YES if the specifier was correct and the binding label and | |
6547 | bind(c) fields were set correctly for the given symbol or the | |
1eabf70a TB |
6548 | current_ts. If allow_binding_name is false, no binding name may be |
6549 | given. */ | |
a8b3b0b6 CR |
6550 | |
6551 | match | |
1eabf70a | 6552 | gfc_match_bind_c (gfc_symbol *sym, bool allow_binding_name) |
a8b3b0b6 | 6553 | { |
3b37ccd4 FXC |
6554 | char *binding_label = NULL; |
6555 | gfc_expr *e = NULL; | |
a8b3b0b6 | 6556 | |
f5acf0f2 | 6557 | /* Initialize the flag that specifies whether we encountered a NAME= |
a8b3b0b6 CR |
6558 | specifier or not. */ |
6559 | has_name_equals = 0; | |
6560 | ||
a8b3b0b6 CR |
6561 | /* This much we have to be able to match, in this order, if |
6562 | there is a bind(c) label. */ | |
6563 | if (gfc_match (" bind ( c ") != MATCH_YES) | |
6564 | return MATCH_NO; | |
6565 | ||
6566 | /* Now see if there is a binding label, or if we've reached the | |
6567 | end of the bind(c) attribute without one. */ | |
6568 | if (gfc_match_char (',') == MATCH_YES) | |
6569 | { | |
6570 | if (gfc_match (" name = ") != MATCH_YES) | |
6571 | { | |
6572 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
6573 | "at %C"); | |
6574 | /* should give an error message here */ | |
6575 | return MATCH_ERROR; | |
6576 | } | |
6577 | ||
6578 | has_name_equals = 1; | |
6579 | ||
3b37ccd4 FXC |
6580 | if (gfc_match_init_expr (&e) != MATCH_YES) |
6581 | { | |
6582 | gfc_free_expr (e); | |
6583 | return MATCH_ERROR; | |
6584 | } | |
f5acf0f2 | 6585 | |
3b37ccd4 | 6586 | if (!gfc_simplify_expr(e, 0)) |
a8b3b0b6 | 6587 | { |
3b37ccd4 FXC |
6588 | gfc_error ("NAME= specifier at %C should be a constant expression"); |
6589 | gfc_free_expr (e); | |
6590 | return MATCH_ERROR; | |
a8b3b0b6 | 6591 | } |
3b37ccd4 FXC |
6592 | |
6593 | if (e->expr_type != EXPR_CONSTANT || e->ts.type != BT_CHARACTER | |
6594 | || e->ts.kind != gfc_default_character_kind || e->rank != 0) | |
a8b3b0b6 | 6595 | { |
3b37ccd4 FXC |
6596 | gfc_error ("NAME= specifier at %C should be a scalar of " |
6597 | "default character kind"); | |
6598 | gfc_free_expr(e); | |
6599 | return MATCH_ERROR; | |
a8b3b0b6 | 6600 | } |
3b37ccd4 FXC |
6601 | |
6602 | // Get a C string from the Fortran string constant | |
6603 | binding_label = gfc_widechar_to_char (e->value.character.string, | |
6604 | e->value.character.length); | |
6605 | gfc_free_expr(e); | |
6606 | ||
6607 | // Check that it is valid (old gfc_match_name_C) | |
6608 | if (check_bind_name_identifier (&binding_label) != MATCH_YES) | |
6609 | return MATCH_ERROR; | |
6610 | } | |
a8b3b0b6 CR |
6611 | |
6612 | /* Get the required right paren. */ | |
6613 | if (gfc_match_char (')') != MATCH_YES) | |
6614 | { | |
6615 | gfc_error ("Missing closing paren for binding label at %C"); | |
6616 | return MATCH_ERROR; | |
6617 | } | |
6618 | ||
1eabf70a TB |
6619 | if (has_name_equals && !allow_binding_name) |
6620 | { | |
6621 | gfc_error ("No binding name is allowed in BIND(C) at %C"); | |
6622 | return MATCH_ERROR; | |
6623 | } | |
6624 | ||
6625 | if (has_name_equals && sym != NULL && sym->attr.dummy) | |
6626 | { | |
6627 | gfc_error ("For dummy procedure %s, no binding name is " | |
6628 | "allowed in BIND(C) at %C", sym->name); | |
6629 | return MATCH_ERROR; | |
6630 | } | |
6631 | ||
6632 | ||
a8b3b0b6 CR |
6633 | /* Save the binding label to the symbol. If sym is null, we're |
6634 | probably matching the typespec attributes of a declaration and | |
6635 | haven't gotten the name yet, and therefore, no symbol yet. */ | |
62603fae | 6636 | if (binding_label) |
a8b3b0b6 CR |
6637 | { |
6638 | if (sym != NULL) | |
62603fae | 6639 | sym->binding_label = binding_label; |
a8b3b0b6 | 6640 | else |
62603fae | 6641 | curr_binding_label = binding_label; |
a8b3b0b6 | 6642 | } |
1eabf70a | 6643 | else if (allow_binding_name) |
a8b3b0b6 CR |
6644 | { |
6645 | /* No binding label, but if symbol isn't null, we | |
1eabf70a TB |
6646 | can set the label for it here. |
6647 | If name="" or allow_binding_name is false, no C binding name is | |
1cc0e193 | 6648 | created. */ |
a8b3b0b6 | 6649 | if (sym != NULL && sym->name != NULL && has_name_equals == 0) |
62603fae | 6650 | sym->binding_label = IDENTIFIER_POINTER (get_identifier (sym->name)); |
a8b3b0b6 | 6651 | } |
9e1d712c | 6652 | |
129d15a3 JW |
6653 | if (has_name_equals && gfc_current_state () == COMP_INTERFACE |
6654 | && current_interface.type == INTERFACE_ABSTRACT) | |
9e1d712c TB |
6655 | { |
6656 | gfc_error ("NAME not allowed on BIND(C) for ABSTRACT INTERFACE at %C"); | |
6657 | return MATCH_ERROR; | |
6658 | } | |
6659 | ||
a8b3b0b6 CR |
6660 | return MATCH_YES; |
6661 | } | |
6662 | ||
6663 | ||
1f2959f0 | 6664 | /* Return nonzero if we're currently compiling a contained procedure. */ |
ddc9ce91 TS |
6665 | |
6666 | static int | |
6667 | contained_procedure (void) | |
6668 | { | |
083de129 | 6669 | gfc_state_data *s = gfc_state_stack; |
ddc9ce91 | 6670 | |
083de129 TB |
6671 | if ((s->state == COMP_SUBROUTINE || s->state == COMP_FUNCTION) |
6672 | && s->previous != NULL && s->previous->state == COMP_CONTAINS) | |
6673 | return 1; | |
ddc9ce91 TS |
6674 | |
6675 | return 0; | |
6676 | } | |
6677 | ||
d51347f9 | 6678 | /* Set the kind of each enumerator. The kind is selected such that it is |
25d8f0a2 TS |
6679 | interoperable with the corresponding C enumeration type, making |
6680 | sure that -fshort-enums is honored. */ | |
6681 | ||
6682 | static void | |
6683 | set_enum_kind(void) | |
6684 | { | |
6685 | enumerator_history *current_history = NULL; | |
6686 | int kind; | |
6687 | int i; | |
6688 | ||
6689 | if (max_enum == NULL || enum_history == NULL) | |
6690 | return; | |
6691 | ||
cab129d1 | 6692 | if (!flag_short_enums) |
d51347f9 TB |
6693 | return; |
6694 | ||
25d8f0a2 TS |
6695 | i = 0; |
6696 | do | |
6697 | { | |
6698 | kind = gfc_integer_kinds[i++].kind; | |
6699 | } | |
d51347f9 | 6700 | while (kind < gfc_c_int_kind |
25d8f0a2 TS |
6701 | && gfc_check_integer_range (max_enum->initializer->value.integer, |
6702 | kind) != ARITH_OK); | |
6703 | ||
6704 | current_history = enum_history; | |
6705 | while (current_history != NULL) | |
6706 | { | |
6707 | current_history->sym->ts.kind = kind; | |
6708 | current_history = current_history->next; | |
6709 | } | |
6710 | } | |
6711 | ||
636dff67 | 6712 | |
6de9cd9a | 6713 | /* Match any of the various end-block statements. Returns the type of |
9abe5e56 DK |
6714 | END to the caller. The END INTERFACE, END IF, END DO, END SELECT |
6715 | and END BLOCK statements cannot be replaced by a single END statement. */ | |
6de9cd9a DN |
6716 | |
6717 | match | |
636dff67 | 6718 | gfc_match_end (gfc_statement *st) |
6de9cd9a DN |
6719 | { |
6720 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6721 | gfc_compile_state state; | |
6722 | locus old_loc; | |
6723 | const char *block_name; | |
6724 | const char *target; | |
ddc9ce91 | 6725 | int eos_ok; |
6de9cd9a | 6726 | match m; |
0cab6b73 TK |
6727 | gfc_namespace *parent_ns, *ns, *prev_ns; |
6728 | gfc_namespace **nsp; | |
4668d6f9 | 6729 | bool abreviated_modproc_decl; |
874108a9 | 6730 | bool got_matching_end = false; |
6de9cd9a | 6731 | |
63645982 | 6732 | old_loc = gfc_current_locus; |
6de9cd9a DN |
6733 | if (gfc_match ("end") != MATCH_YES) |
6734 | return MATCH_NO; | |
6735 | ||
6736 | state = gfc_current_state (); | |
636dff67 SK |
6737 | block_name = gfc_current_block () == NULL |
6738 | ? NULL : gfc_current_block ()->name; | |
6de9cd9a | 6739 | |
03af1e4c | 6740 | switch (state) |
6de9cd9a | 6741 | { |
03af1e4c DK |
6742 | case COMP_ASSOCIATE: |
6743 | case COMP_BLOCK: | |
3a1fd30c | 6744 | if (!strncmp (block_name, "block@", strlen("block@"))) |
03af1e4c DK |
6745 | block_name = NULL; |
6746 | break; | |
6747 | ||
6748 | case COMP_CONTAINS: | |
6749 | case COMP_DERIVED_CONTAINS: | |
6de9cd9a | 6750 | state = gfc_state_stack->previous->state; |
636dff67 SK |
6751 | block_name = gfc_state_stack->previous->sym == NULL |
6752 | ? NULL : gfc_state_stack->previous->sym->name; | |
03af1e4c DK |
6753 | break; |
6754 | ||
6755 | default: | |
6756 | break; | |
6de9cd9a DN |
6757 | } |
6758 | ||
4668d6f9 PT |
6759 | abreviated_modproc_decl |
6760 | = gfc_current_block () | |
6761 | && gfc_current_block ()->abr_modproc_decl; | |
6762 | ||
6de9cd9a DN |
6763 | switch (state) |
6764 | { | |
6765 | case COMP_NONE: | |
6766 | case COMP_PROGRAM: | |
6767 | *st = ST_END_PROGRAM; | |
6768 | target = " program"; | |
ddc9ce91 | 6769 | eos_ok = 1; |
6de9cd9a DN |
6770 | break; |
6771 | ||
6772 | case COMP_SUBROUTINE: | |
6773 | *st = ST_END_SUBROUTINE; | |
4668d6f9 | 6774 | if (!abreviated_modproc_decl) |
6de9cd9a | 6775 | target = " subroutine"; |
4668d6f9 PT |
6776 | else |
6777 | target = " procedure"; | |
ddc9ce91 | 6778 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
6779 | break; |
6780 | ||
6781 | case COMP_FUNCTION: | |
6782 | *st = ST_END_FUNCTION; | |
4668d6f9 | 6783 | if (!abreviated_modproc_decl) |
6de9cd9a | 6784 | target = " function"; |
4668d6f9 PT |
6785 | else |
6786 | target = " procedure"; | |
ddc9ce91 | 6787 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
6788 | break; |
6789 | ||
6790 | case COMP_BLOCK_DATA: | |
6791 | *st = ST_END_BLOCK_DATA; | |
6792 | target = " block data"; | |
ddc9ce91 | 6793 | eos_ok = 1; |
6de9cd9a DN |
6794 | break; |
6795 | ||
6796 | case COMP_MODULE: | |
6797 | *st = ST_END_MODULE; | |
6798 | target = " module"; | |
ddc9ce91 | 6799 | eos_ok = 1; |
6de9cd9a DN |
6800 | break; |
6801 | ||
4668d6f9 PT |
6802 | case COMP_SUBMODULE: |
6803 | *st = ST_END_SUBMODULE; | |
6804 | target = " submodule"; | |
6805 | eos_ok = 1; | |
6806 | break; | |
6807 | ||
6de9cd9a DN |
6808 | case COMP_INTERFACE: |
6809 | *st = ST_END_INTERFACE; | |
6810 | target = " interface"; | |
ddc9ce91 | 6811 | eos_ok = 0; |
6de9cd9a DN |
6812 | break; |
6813 | ||
f6288c24 FR |
6814 | case COMP_MAP: |
6815 | *st = ST_END_MAP; | |
6816 | target = " map"; | |
6817 | eos_ok = 0; | |
6818 | break; | |
6819 | ||
6820 | case COMP_UNION: | |
6821 | *st = ST_END_UNION; | |
6822 | target = " union"; | |
6823 | eos_ok = 0; | |
6824 | break; | |
6825 | ||
6826 | case COMP_STRUCTURE: | |
6827 | *st = ST_END_STRUCTURE; | |
6828 | target = " structure"; | |
6829 | eos_ok = 0; | |
6830 | break; | |
6831 | ||
6de9cd9a | 6832 | case COMP_DERIVED: |
30b608eb | 6833 | case COMP_DERIVED_CONTAINS: |
6de9cd9a DN |
6834 | *st = ST_END_TYPE; |
6835 | target = " type"; | |
ddc9ce91 | 6836 | eos_ok = 0; |
6de9cd9a DN |
6837 | break; |
6838 | ||
03af1e4c DK |
6839 | case COMP_ASSOCIATE: |
6840 | *st = ST_END_ASSOCIATE; | |
6841 | target = " associate"; | |
6842 | eos_ok = 0; | |
6843 | break; | |
6844 | ||
9abe5e56 DK |
6845 | case COMP_BLOCK: |
6846 | *st = ST_END_BLOCK; | |
6847 | target = " block"; | |
6848 | eos_ok = 0; | |
6849 | break; | |
6850 | ||
6de9cd9a DN |
6851 | case COMP_IF: |
6852 | *st = ST_ENDIF; | |
6853 | target = " if"; | |
ddc9ce91 | 6854 | eos_ok = 0; |
6de9cd9a DN |
6855 | break; |
6856 | ||
6857 | case COMP_DO: | |
8c6a85e3 | 6858 | case COMP_DO_CONCURRENT: |
6de9cd9a DN |
6859 | *st = ST_ENDDO; |
6860 | target = " do"; | |
ddc9ce91 | 6861 | eos_ok = 0; |
6de9cd9a DN |
6862 | break; |
6863 | ||
d0a4a61c TB |
6864 | case COMP_CRITICAL: |
6865 | *st = ST_END_CRITICAL; | |
6866 | target = " critical"; | |
6867 | eos_ok = 0; | |
6868 | break; | |
6869 | ||
6de9cd9a | 6870 | case COMP_SELECT: |
cf2b3c22 | 6871 | case COMP_SELECT_TYPE: |
6de9cd9a DN |
6872 | *st = ST_END_SELECT; |
6873 | target = " select"; | |
ddc9ce91 | 6874 | eos_ok = 0; |
6de9cd9a DN |
6875 | break; |
6876 | ||
6877 | case COMP_FORALL: | |
6878 | *st = ST_END_FORALL; | |
6879 | target = " forall"; | |
ddc9ce91 | 6880 | eos_ok = 0; |
6de9cd9a DN |
6881 | break; |
6882 | ||
6883 | case COMP_WHERE: | |
6884 | *st = ST_END_WHERE; | |
6885 | target = " where"; | |
ddc9ce91 | 6886 | eos_ok = 0; |
6de9cd9a DN |
6887 | break; |
6888 | ||
25d8f0a2 TS |
6889 | case COMP_ENUM: |
6890 | *st = ST_END_ENUM; | |
6891 | target = " enum"; | |
6892 | eos_ok = 0; | |
6893 | last_initializer = NULL; | |
6894 | set_enum_kind (); | |
6895 | gfc_free_enum_history (); | |
6896 | break; | |
6897 | ||
6de9cd9a DN |
6898 | default: |
6899 | gfc_error ("Unexpected END statement at %C"); | |
6900 | goto cleanup; | |
6901 | } | |
6902 | ||
3a43b5b3 | 6903 | old_loc = gfc_current_locus; |
6de9cd9a DN |
6904 | if (gfc_match_eos () == MATCH_YES) |
6905 | { | |
272001a2 TB |
6906 | if (!eos_ok && (*st == ST_END_SUBROUTINE || *st == ST_END_FUNCTION)) |
6907 | { | |
524af0d6 | 6908 | if (!gfc_notify_std (GFC_STD_F2008, "END statement " |
70112e2a | 6909 | "instead of %s statement at %L", |
4668d6f9 PT |
6910 | abreviated_modproc_decl ? "END PROCEDURE" |
6911 | : gfc_ascii_statement(*st), &old_loc)) | |
272001a2 TB |
6912 | goto cleanup; |
6913 | } | |
6914 | else if (!eos_ok) | |
6de9cd9a | 6915 | { |
66e4ab31 | 6916 | /* We would have required END [something]. */ |
59ce85b5 TS |
6917 | gfc_error ("%s statement expected at %L", |
6918 | gfc_ascii_statement (*st), &old_loc); | |
6de9cd9a DN |
6919 | goto cleanup; |
6920 | } | |
6921 | ||
6922 | return MATCH_YES; | |
6923 | } | |
6924 | ||
6925 | /* Verify that we've got the sort of end-block that we're expecting. */ | |
6926 | if (gfc_match (target) != MATCH_YES) | |
6927 | { | |
4668d6f9 PT |
6928 | gfc_error ("Expecting %s statement at %L", abreviated_modproc_decl |
6929 | ? "END PROCEDURE" : gfc_ascii_statement(*st), &old_loc); | |
6de9cd9a DN |
6930 | goto cleanup; |
6931 | } | |
874108a9 AV |
6932 | else |
6933 | got_matching_end = true; | |
6de9cd9a | 6934 | |
3a43b5b3 | 6935 | old_loc = gfc_current_locus; |
6de9cd9a DN |
6936 | /* If we're at the end, make sure a block name wasn't required. */ |
6937 | if (gfc_match_eos () == MATCH_YES) | |
6938 | { | |
6939 | ||
690af379 | 6940 | if (*st != ST_ENDDO && *st != ST_ENDIF && *st != ST_END_SELECT |
d0a4a61c | 6941 | && *st != ST_END_FORALL && *st != ST_END_WHERE && *st != ST_END_BLOCK |
03af1e4c | 6942 | && *st != ST_END_ASSOCIATE && *st != ST_END_CRITICAL) |
6de9cd9a DN |
6943 | return MATCH_YES; |
6944 | ||
9abe5e56 | 6945 | if (!block_name) |
6de9cd9a DN |
6946 | return MATCH_YES; |
6947 | ||
c4100eae | 6948 | gfc_error ("Expected block name of %qs in %s statement at %L", |
3a43b5b3 | 6949 | block_name, gfc_ascii_statement (*st), &old_loc); |
6de9cd9a DN |
6950 | |
6951 | return MATCH_ERROR; | |
6952 | } | |
6953 | ||
6954 | /* END INTERFACE has a special handler for its several possible endings. */ | |
6955 | if (*st == ST_END_INTERFACE) | |
6956 | return gfc_match_end_interface (); | |
6957 | ||
66e4ab31 SK |
6958 | /* We haven't hit the end of statement, so what is left must be an |
6959 | end-name. */ | |
6de9cd9a DN |
6960 | m = gfc_match_space (); |
6961 | if (m == MATCH_YES) | |
6962 | m = gfc_match_name (name); | |
6963 | ||
6964 | if (m == MATCH_NO) | |
6965 | gfc_error ("Expected terminating name at %C"); | |
6966 | if (m != MATCH_YES) | |
6967 | goto cleanup; | |
6968 | ||
6969 | if (block_name == NULL) | |
6970 | goto syntax; | |
6971 | ||
3d5dc929 PT |
6972 | /* We have to pick out the declared submodule name from the composite |
6973 | required by F2008:11.2.3 para 2, which ends in the declared name. */ | |
6974 | if (state == COMP_SUBMODULE) | |
6975 | block_name = strchr (block_name, '.') + 1; | |
6976 | ||
3070bab4 | 6977 | if (strcmp (name, block_name) != 0 && strcmp (block_name, "ppr@") != 0) |
6de9cd9a | 6978 | { |
c4100eae | 6979 | gfc_error ("Expected label %qs for %s statement at %C", block_name, |
6de9cd9a DN |
6980 | gfc_ascii_statement (*st)); |
6981 | goto cleanup; | |
6982 | } | |
3070bab4 JW |
6983 | /* Procedure pointer as function result. */ |
6984 | else if (strcmp (block_name, "ppr@") == 0 | |
6985 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) != 0) | |
6986 | { | |
c4100eae | 6987 | gfc_error ("Expected label %qs for %s statement at %C", |
3070bab4 JW |
6988 | gfc_current_block ()->ns->proc_name->name, |
6989 | gfc_ascii_statement (*st)); | |
6990 | goto cleanup; | |
6991 | } | |
6de9cd9a DN |
6992 | |
6993 | if (gfc_match_eos () == MATCH_YES) | |
6994 | return MATCH_YES; | |
6995 | ||
6996 | syntax: | |
6997 | gfc_syntax_error (*st); | |
6998 | ||
6999 | cleanup: | |
63645982 | 7000 | gfc_current_locus = old_loc; |
0cab6b73 TK |
7001 | |
7002 | /* If we are missing an END BLOCK, we created a half-ready namespace. | |
7003 | Remove it from the parent namespace's sibling list. */ | |
7004 | ||
874108a9 | 7005 | while (state == COMP_BLOCK && !got_matching_end) |
0cab6b73 TK |
7006 | { |
7007 | parent_ns = gfc_current_ns->parent; | |
7008 | ||
7009 | nsp = &(gfc_state_stack->previous->tail->ext.block.ns); | |
7010 | ||
7011 | prev_ns = NULL; | |
7012 | ns = *nsp; | |
7013 | while (ns) | |
7014 | { | |
7015 | if (ns == gfc_current_ns) | |
7016 | { | |
7017 | if (prev_ns == NULL) | |
7018 | *nsp = NULL; | |
7019 | else | |
7020 | prev_ns->sibling = ns->sibling; | |
7021 | } | |
7022 | prev_ns = ns; | |
7023 | ns = ns->sibling; | |
7024 | } | |
874108a9 | 7025 | |
0cab6b73 TK |
7026 | gfc_free_namespace (gfc_current_ns); |
7027 | gfc_current_ns = parent_ns; | |
9f7ba208 LK |
7028 | gfc_state_stack = gfc_state_stack->previous; |
7029 | state = gfc_current_state (); | |
0cab6b73 TK |
7030 | } |
7031 | ||
6de9cd9a DN |
7032 | return MATCH_ERROR; |
7033 | } | |
7034 | ||
7035 | ||
7036 | ||
7037 | /***************** Attribute declaration statements ****************/ | |
7038 | ||
7039 | /* Set the attribute of a single variable. */ | |
7040 | ||
7041 | static match | |
7042 | attr_decl1 (void) | |
7043 | { | |
7044 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7045 | gfc_array_spec *as; | |
97440db5 ML |
7046 | |
7047 | /* Workaround -Wmaybe-uninitialized false positive during | |
7048 | profiledbootstrap by initializing them. */ | |
7049 | gfc_symbol *sym = NULL; | |
6de9cd9a DN |
7050 | locus var_locus; |
7051 | match m; | |
7052 | ||
7053 | as = NULL; | |
7054 | ||
7055 | m = gfc_match_name (name); | |
7056 | if (m != MATCH_YES) | |
7057 | goto cleanup; | |
7058 | ||
08a6b8e0 | 7059 | if (find_special (name, &sym, false)) |
6de9cd9a DN |
7060 | return MATCH_ERROR; |
7061 | ||
524af0d6 | 7062 | if (!check_function_name (name)) |
bb9de0c4 JW |
7063 | { |
7064 | m = MATCH_ERROR; | |
7065 | goto cleanup; | |
7066 | } | |
f5acf0f2 | 7067 | |
63645982 | 7068 | var_locus = gfc_current_locus; |
6de9cd9a DN |
7069 | |
7070 | /* Deal with possible array specification for certain attributes. */ | |
7071 | if (current_attr.dimension | |
be59db2d | 7072 | || current_attr.codimension |
6de9cd9a DN |
7073 | || current_attr.allocatable |
7074 | || current_attr.pointer | |
7075 | || current_attr.target) | |
7076 | { | |
be59db2d TB |
7077 | m = gfc_match_array_spec (&as, !current_attr.codimension, |
7078 | !current_attr.dimension | |
7079 | && !current_attr.pointer | |
7080 | && !current_attr.target); | |
6de9cd9a DN |
7081 | if (m == MATCH_ERROR) |
7082 | goto cleanup; | |
7083 | ||
7084 | if (current_attr.dimension && m == MATCH_NO) | |
7085 | { | |
636dff67 SK |
7086 | gfc_error ("Missing array specification at %L in DIMENSION " |
7087 | "statement", &var_locus); | |
6de9cd9a DN |
7088 | m = MATCH_ERROR; |
7089 | goto cleanup; | |
7090 | } | |
7091 | ||
1283ab12 TB |
7092 | if (current_attr.dimension && sym->value) |
7093 | { | |
7094 | gfc_error ("Dimensions specified for %s at %L after its " | |
7095 | "initialisation", sym->name, &var_locus); | |
7096 | m = MATCH_ERROR; | |
7097 | goto cleanup; | |
7098 | } | |
7099 | ||
be59db2d TB |
7100 | if (current_attr.codimension && m == MATCH_NO) |
7101 | { | |
7102 | gfc_error ("Missing array specification at %L in CODIMENSION " | |
7103 | "statement", &var_locus); | |
7104 | m = MATCH_ERROR; | |
7105 | goto cleanup; | |
7106 | } | |
7107 | ||
6de9cd9a DN |
7108 | if ((current_attr.allocatable || current_attr.pointer) |
7109 | && (m == MATCH_YES) && (as->type != AS_DEFERRED)) | |
7110 | { | |
636dff67 | 7111 | gfc_error ("Array specification must be deferred at %L", &var_locus); |
6de9cd9a DN |
7112 | m = MATCH_ERROR; |
7113 | goto cleanup; | |
7114 | } | |
7115 | } | |
7116 | ||
2e23972e JW |
7117 | /* Update symbol table. DIMENSION attribute is set in |
7118 | gfc_set_array_spec(). For CLASS variables, this must be applied | |
b04533af | 7119 | to the first component, or '_data' field. */ |
d40477b4 | 7120 | if (sym->ts.type == BT_CLASS && sym->ts.u.derived->attr.is_class) |
6de9cd9a | 7121 | { |
524af0d6 | 7122 | if (!gfc_copy_attr (&CLASS_DATA(sym)->attr, ¤t_attr, &var_locus)) |
2e23972e JW |
7123 | { |
7124 | m = MATCH_ERROR; | |
7125 | goto cleanup; | |
7126 | } | |
2e23972e JW |
7127 | } |
7128 | else | |
7129 | { | |
be59db2d | 7130 | if (current_attr.dimension == 0 && current_attr.codimension == 0 |
524af0d6 | 7131 | && !gfc_copy_attr (&sym->attr, ¤t_attr, &var_locus)) |
2e23972e JW |
7132 | { |
7133 | m = MATCH_ERROR; | |
7134 | goto cleanup; | |
7135 | } | |
6de9cd9a | 7136 | } |
f5acf0f2 | 7137 | |
528622fd | 7138 | if (sym->ts.type == BT_CLASS |
9b6da3c7 | 7139 | && !gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as)) |
96d9b22c JW |
7140 | { |
7141 | m = MATCH_ERROR; | |
7142 | goto cleanup; | |
7143 | } | |
6de9cd9a | 7144 | |
524af0d6 | 7145 | if (!gfc_set_array_spec (sym, as, &var_locus)) |
6de9cd9a DN |
7146 | { |
7147 | m = MATCH_ERROR; | |
7148 | goto cleanup; | |
7149 | } | |
d51347f9 | 7150 | |
83d890b9 AL |
7151 | if (sym->attr.cray_pointee && sym->as != NULL) |
7152 | { | |
7153 | /* Fix the array spec. */ | |
f5acf0f2 | 7154 | m = gfc_mod_pointee_as (sym->as); |
83d890b9 AL |
7155 | if (m == MATCH_ERROR) |
7156 | goto cleanup; | |
7157 | } | |
6de9cd9a | 7158 | |
524af0d6 | 7159 | if (!gfc_add_attribute (&sym->attr, &var_locus)) |
1902704e PT |
7160 | { |
7161 | m = MATCH_ERROR; | |
7162 | goto cleanup; | |
7163 | } | |
7164 | ||
6de9cd9a DN |
7165 | if ((current_attr.external || current_attr.intrinsic) |
7166 | && sym->attr.flavor != FL_PROCEDURE | |
524af0d6 | 7167 | && !gfc_add_flavor (&sym->attr, FL_PROCEDURE, sym->name, NULL)) |
6de9cd9a DN |
7168 | { |
7169 | m = MATCH_ERROR; | |
7170 | goto cleanup; | |
7171 | } | |
7172 | ||
3070bab4 JW |
7173 | add_hidden_procptr_result (sym); |
7174 | ||
6de9cd9a DN |
7175 | return MATCH_YES; |
7176 | ||
7177 | cleanup: | |
7178 | gfc_free_array_spec (as); | |
7179 | return m; | |
7180 | } | |
7181 | ||
7182 | ||
7183 | /* Generic attribute declaration subroutine. Used for attributes that | |
7184 | just have a list of names. */ | |
7185 | ||
7186 | static match | |
7187 | attr_decl (void) | |
7188 | { | |
7189 | match m; | |
7190 | ||
7191 | /* Gobble the optional double colon, by simply ignoring the result | |
7192 | of gfc_match(). */ | |
7193 | gfc_match (" ::"); | |
7194 | ||
7195 | for (;;) | |
7196 | { | |
7197 | m = attr_decl1 (); | |
7198 | if (m != MATCH_YES) | |
7199 | break; | |
7200 | ||
7201 | if (gfc_match_eos () == MATCH_YES) | |
7202 | { | |
7203 | m = MATCH_YES; | |
7204 | break; | |
7205 | } | |
7206 | ||
7207 | if (gfc_match_char (',') != MATCH_YES) | |
7208 | { | |
7209 | gfc_error ("Unexpected character in variable list at %C"); | |
7210 | m = MATCH_ERROR; | |
7211 | break; | |
7212 | } | |
7213 | } | |
7214 | ||
7215 | return m; | |
7216 | } | |
7217 | ||
7218 | ||
83d890b9 AL |
7219 | /* This routine matches Cray Pointer declarations of the form: |
7220 | pointer ( <pointer>, <pointee> ) | |
7221 | or | |
d51347f9 TB |
7222 | pointer ( <pointer1>, <pointee1> ), ( <pointer2>, <pointee2> ), ... |
7223 | The pointer, if already declared, should be an integer. Otherwise, we | |
83d890b9 AL |
7224 | set it as BT_INTEGER with kind gfc_index_integer_kind. The pointee may |
7225 | be either a scalar, or an array declaration. No space is allocated for | |
d51347f9 | 7226 | the pointee. For the statement |
83d890b9 AL |
7227 | pointer (ipt, ar(10)) |
7228 | any subsequent uses of ar will be translated (in C-notation) as | |
d51347f9 | 7229 | ar(i) => ((<type> *) ipt)(i) |
b122dc6a | 7230 | After gimplification, pointee variable will disappear in the code. */ |
83d890b9 AL |
7231 | |
7232 | static match | |
7233 | cray_pointer_decl (void) | |
7234 | { | |
7235 | match m; | |
be59db2d | 7236 | gfc_array_spec *as = NULL; |
83d890b9 AL |
7237 | gfc_symbol *cptr; /* Pointer symbol. */ |
7238 | gfc_symbol *cpte; /* Pointee symbol. */ | |
7239 | locus var_locus; | |
7240 | bool done = false; | |
7241 | ||
7242 | while (!done) | |
7243 | { | |
7244 | if (gfc_match_char ('(') != MATCH_YES) | |
7245 | { | |
a4d9b221 | 7246 | gfc_error ("Expected %<(%> at %C"); |
d51347f9 | 7247 | return MATCH_ERROR; |
83d890b9 | 7248 | } |
d51347f9 | 7249 | |
83d890b9 AL |
7250 | /* Match pointer. */ |
7251 | var_locus = gfc_current_locus; | |
7252 | gfc_clear_attr (¤t_attr); | |
7253 | gfc_add_cray_pointer (¤t_attr, &var_locus); | |
7254 | current_ts.type = BT_INTEGER; | |
7255 | current_ts.kind = gfc_index_integer_kind; | |
7256 | ||
d51347f9 | 7257 | m = gfc_match_symbol (&cptr, 0); |
83d890b9 AL |
7258 | if (m != MATCH_YES) |
7259 | { | |
7260 | gfc_error ("Expected variable name at %C"); | |
7261 | return m; | |
7262 | } | |
d51347f9 | 7263 | |
524af0d6 | 7264 | if (!gfc_add_cray_pointer (&cptr->attr, &var_locus)) |
83d890b9 AL |
7265 | return MATCH_ERROR; |
7266 | ||
d51347f9 | 7267 | gfc_set_sym_referenced (cptr); |
83d890b9 AL |
7268 | |
7269 | if (cptr->ts.type == BT_UNKNOWN) /* Override the type, if necessary. */ | |
7270 | { | |
7271 | cptr->ts.type = BT_INTEGER; | |
d51347f9 | 7272 | cptr->ts.kind = gfc_index_integer_kind; |
83d890b9 AL |
7273 | } |
7274 | else if (cptr->ts.type != BT_INTEGER) | |
7275 | { | |
e25a0da3 | 7276 | gfc_error ("Cray pointer at %C must be an integer"); |
83d890b9 AL |
7277 | return MATCH_ERROR; |
7278 | } | |
7279 | else if (cptr->ts.kind < gfc_index_integer_kind) | |
db30e21c | 7280 | gfc_warning (0, "Cray pointer at %C has %d bytes of precision;" |
e25a0da3 | 7281 | " memory addresses require %d bytes", |
636dff67 | 7282 | cptr->ts.kind, gfc_index_integer_kind); |
83d890b9 AL |
7283 | |
7284 | if (gfc_match_char (',') != MATCH_YES) | |
7285 | { | |
7286 | gfc_error ("Expected \",\" at %C"); | |
d51347f9 | 7287 | return MATCH_ERROR; |
83d890b9 AL |
7288 | } |
7289 | ||
d51347f9 | 7290 | /* Match Pointee. */ |
83d890b9 AL |
7291 | var_locus = gfc_current_locus; |
7292 | gfc_clear_attr (¤t_attr); | |
7293 | gfc_add_cray_pointee (¤t_attr, &var_locus); | |
7294 | current_ts.type = BT_UNKNOWN; | |
7295 | current_ts.kind = 0; | |
7296 | ||
7297 | m = gfc_match_symbol (&cpte, 0); | |
7298 | if (m != MATCH_YES) | |
7299 | { | |
7300 | gfc_error ("Expected variable name at %C"); | |
7301 | return m; | |
7302 | } | |
d51347f9 | 7303 | |
83d890b9 | 7304 | /* Check for an optional array spec. */ |
be59db2d | 7305 | m = gfc_match_array_spec (&as, true, false); |
83d890b9 AL |
7306 | if (m == MATCH_ERROR) |
7307 | { | |
7308 | gfc_free_array_spec (as); | |
7309 | return m; | |
7310 | } | |
7311 | else if (m == MATCH_NO) | |
7312 | { | |
7313 | gfc_free_array_spec (as); | |
7314 | as = NULL; | |
f5acf0f2 | 7315 | } |
83d890b9 | 7316 | |
524af0d6 | 7317 | if (!gfc_add_cray_pointee (&cpte->attr, &var_locus)) |
83d890b9 AL |
7318 | return MATCH_ERROR; |
7319 | ||
7320 | gfc_set_sym_referenced (cpte); | |
7321 | ||
7322 | if (cpte->as == NULL) | |
7323 | { | |
524af0d6 | 7324 | if (!gfc_set_array_spec (cpte, as, &var_locus)) |
83d890b9 AL |
7325 | gfc_internal_error ("Couldn't set Cray pointee array spec."); |
7326 | } | |
7327 | else if (as != NULL) | |
7328 | { | |
e25a0da3 | 7329 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
7330 | gfc_free_array_spec (as); |
7331 | return MATCH_ERROR; | |
7332 | } | |
f5acf0f2 | 7333 | |
83d890b9 | 7334 | as = NULL; |
f5acf0f2 | 7335 | |
83d890b9 AL |
7336 | if (cpte->as != NULL) |
7337 | { | |
7338 | /* Fix array spec. */ | |
7339 | m = gfc_mod_pointee_as (cpte->as); | |
7340 | if (m == MATCH_ERROR) | |
7341 | return m; | |
f5acf0f2 PT |
7342 | } |
7343 | ||
83d890b9 | 7344 | /* Point the Pointee at the Pointer. */ |
b122dc6a | 7345 | cpte->cp_pointer = cptr; |
83d890b9 AL |
7346 | |
7347 | if (gfc_match_char (')') != MATCH_YES) | |
7348 | { | |
7349 | gfc_error ("Expected \")\" at %C"); | |
f5acf0f2 | 7350 | return MATCH_ERROR; |
83d890b9 AL |
7351 | } |
7352 | m = gfc_match_char (','); | |
7353 | if (m != MATCH_YES) | |
7354 | done = true; /* Stop searching for more declarations. */ | |
7355 | ||
7356 | } | |
f5acf0f2 | 7357 | |
83d890b9 AL |
7358 | if (m == MATCH_ERROR /* Failed when trying to find ',' above. */ |
7359 | || gfc_match_eos () != MATCH_YES) | |
7360 | { | |
a4d9b221 | 7361 | gfc_error ("Expected %<,%> or end of statement at %C"); |
83d890b9 AL |
7362 | return MATCH_ERROR; |
7363 | } | |
7364 | return MATCH_YES; | |
7365 | } | |
7366 | ||
7367 | ||
6de9cd9a DN |
7368 | match |
7369 | gfc_match_external (void) | |
7370 | { | |
7371 | ||
7372 | gfc_clear_attr (¤t_attr); | |
1902704e | 7373 | current_attr.external = 1; |
6de9cd9a DN |
7374 | |
7375 | return attr_decl (); | |
7376 | } | |
7377 | ||
7378 | ||
6de9cd9a DN |
7379 | match |
7380 | gfc_match_intent (void) | |
7381 | { | |
7382 | sym_intent intent; | |
7383 | ||
9abe5e56 DK |
7384 | /* This is not allowed within a BLOCK construct! */ |
7385 | if (gfc_current_state () == COMP_BLOCK) | |
7386 | { | |
7387 | gfc_error ("INTENT is not allowed inside of BLOCK at %C"); | |
7388 | return MATCH_ERROR; | |
7389 | } | |
7390 | ||
6de9cd9a DN |
7391 | intent = match_intent_spec (); |
7392 | if (intent == INTENT_UNKNOWN) | |
7393 | return MATCH_ERROR; | |
7394 | ||
7395 | gfc_clear_attr (¤t_attr); | |
1902704e | 7396 | current_attr.intent = intent; |
6de9cd9a DN |
7397 | |
7398 | return attr_decl (); | |
7399 | } | |
7400 | ||
7401 | ||
7402 | match | |
7403 | gfc_match_intrinsic (void) | |
7404 | { | |
7405 | ||
7406 | gfc_clear_attr (¤t_attr); | |
1902704e | 7407 | current_attr.intrinsic = 1; |
6de9cd9a DN |
7408 | |
7409 | return attr_decl (); | |
7410 | } | |
7411 | ||
7412 | ||
7413 | match | |
7414 | gfc_match_optional (void) | |
7415 | { | |
9abe5e56 DK |
7416 | /* This is not allowed within a BLOCK construct! */ |
7417 | if (gfc_current_state () == COMP_BLOCK) | |
7418 | { | |
7419 | gfc_error ("OPTIONAL is not allowed inside of BLOCK at %C"); | |
7420 | return MATCH_ERROR; | |
7421 | } | |
6de9cd9a DN |
7422 | |
7423 | gfc_clear_attr (¤t_attr); | |
1902704e | 7424 | current_attr.optional = 1; |
6de9cd9a DN |
7425 | |
7426 | return attr_decl (); | |
7427 | } | |
7428 | ||
7429 | ||
7430 | match | |
7431 | gfc_match_pointer (void) | |
7432 | { | |
83d890b9 | 7433 | gfc_gobble_whitespace (); |
8fc541d3 | 7434 | if (gfc_peek_ascii_char () == '(') |
83d890b9 | 7435 | { |
c61819ff | 7436 | if (!flag_cray_pointer) |
83d890b9 | 7437 | { |
636dff67 SK |
7438 | gfc_error ("Cray pointer declaration at %C requires -fcray-pointer " |
7439 | "flag"); | |
83d890b9 AL |
7440 | return MATCH_ERROR; |
7441 | } | |
7442 | return cray_pointer_decl (); | |
7443 | } | |
7444 | else | |
7445 | { | |
7446 | gfc_clear_attr (¤t_attr); | |
1902704e | 7447 | current_attr.pointer = 1; |
f5acf0f2 | 7448 | |
83d890b9 AL |
7449 | return attr_decl (); |
7450 | } | |
6de9cd9a DN |
7451 | } |
7452 | ||
7453 | ||
7454 | match | |
7455 | gfc_match_allocatable (void) | |
7456 | { | |
6de9cd9a | 7457 | gfc_clear_attr (¤t_attr); |
1902704e | 7458 | current_attr.allocatable = 1; |
6de9cd9a DN |
7459 | |
7460 | return attr_decl (); | |
7461 | } | |
7462 | ||
7463 | ||
be59db2d TB |
7464 | match |
7465 | gfc_match_codimension (void) | |
7466 | { | |
7467 | gfc_clear_attr (¤t_attr); | |
7468 | current_attr.codimension = 1; | |
7469 | ||
7470 | return attr_decl (); | |
7471 | } | |
7472 | ||
7473 | ||
fe4e525c TB |
7474 | match |
7475 | gfc_match_contiguous (void) | |
7476 | { | |
524af0d6 | 7477 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS statement at %C")) |
fe4e525c TB |
7478 | return MATCH_ERROR; |
7479 | ||
7480 | gfc_clear_attr (¤t_attr); | |
7481 | current_attr.contiguous = 1; | |
7482 | ||
7483 | return attr_decl (); | |
7484 | } | |
7485 | ||
7486 | ||
6de9cd9a DN |
7487 | match |
7488 | gfc_match_dimension (void) | |
7489 | { | |
6de9cd9a | 7490 | gfc_clear_attr (¤t_attr); |
1902704e | 7491 | current_attr.dimension = 1; |
6de9cd9a DN |
7492 | |
7493 | return attr_decl (); | |
7494 | } | |
7495 | ||
7496 | ||
7497 | match | |
7498 | gfc_match_target (void) | |
7499 | { | |
6de9cd9a | 7500 | gfc_clear_attr (¤t_attr); |
1902704e | 7501 | current_attr.target = 1; |
6de9cd9a DN |
7502 | |
7503 | return attr_decl (); | |
7504 | } | |
7505 | ||
7506 | ||
7507 | /* Match the list of entities being specified in a PUBLIC or PRIVATE | |
7508 | statement. */ | |
7509 | ||
7510 | static match | |
7511 | access_attr_decl (gfc_statement st) | |
7512 | { | |
7513 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7514 | interface_type type; | |
7515 | gfc_user_op *uop; | |
c3f34952 | 7516 | gfc_symbol *sym, *dt_sym; |
a1ee985f | 7517 | gfc_intrinsic_op op; |
6de9cd9a DN |
7518 | match m; |
7519 | ||
7520 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7521 | goto done; | |
7522 | ||
7523 | for (;;) | |
7524 | { | |
a1ee985f | 7525 | m = gfc_match_generic_spec (&type, name, &op); |
6de9cd9a DN |
7526 | if (m == MATCH_NO) |
7527 | goto syntax; | |
7528 | if (m == MATCH_ERROR) | |
7529 | return MATCH_ERROR; | |
7530 | ||
7531 | switch (type) | |
7532 | { | |
7533 | case INTERFACE_NAMELESS: | |
9e1d712c | 7534 | case INTERFACE_ABSTRACT: |
6de9cd9a DN |
7535 | goto syntax; |
7536 | ||
7537 | case INTERFACE_GENERIC: | |
e73d3ca6 | 7538 | case INTERFACE_DTIO: |
6de9cd9a DN |
7539 | if (gfc_get_symbol (name, NULL, &sym)) |
7540 | goto done; | |
7541 | ||
70112e2a PT |
7542 | if (!gfc_add_access (&sym->attr, |
7543 | (st == ST_PUBLIC) | |
7544 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
524af0d6 | 7545 | sym->name, NULL)) |
6de9cd9a DN |
7546 | return MATCH_ERROR; |
7547 | ||
c3f34952 | 7548 | if (sym->attr.generic && (dt_sym = gfc_find_dt_in_generic (sym)) |
70112e2a PT |
7549 | && !gfc_add_access (&dt_sym->attr, |
7550 | (st == ST_PUBLIC) | |
7551 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
524af0d6 | 7552 | sym->name, NULL)) |
c3f34952 TB |
7553 | return MATCH_ERROR; |
7554 | ||
6de9cd9a DN |
7555 | break; |
7556 | ||
7557 | case INTERFACE_INTRINSIC_OP: | |
a1ee985f | 7558 | if (gfc_current_ns->operator_access[op] == ACCESS_UNKNOWN) |
6de9cd9a | 7559 | { |
fb03a37e TK |
7560 | gfc_intrinsic_op other_op; |
7561 | ||
a1ee985f | 7562 | gfc_current_ns->operator_access[op] = |
6de9cd9a | 7563 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; |
fb03a37e TK |
7564 | |
7565 | /* Handle the case if there is another op with the same | |
7566 | function, for INTRINSIC_EQ vs. INTRINSIC_EQ_OS and so on. */ | |
7567 | other_op = gfc_equivalent_op (op); | |
7568 | ||
7569 | if (other_op != INTRINSIC_NONE) | |
7570 | gfc_current_ns->operator_access[other_op] = | |
7571 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
7572 | ||
6de9cd9a DN |
7573 | } |
7574 | else | |
7575 | { | |
7576 | gfc_error ("Access specification of the %s operator at %C has " | |
a1ee985f | 7577 | "already been specified", gfc_op2string (op)); |
6de9cd9a DN |
7578 | goto done; |
7579 | } | |
7580 | ||
7581 | break; | |
7582 | ||
7583 | case INTERFACE_USER_OP: | |
7584 | uop = gfc_get_uop (name); | |
7585 | ||
7586 | if (uop->access == ACCESS_UNKNOWN) | |
7587 | { | |
636dff67 SK |
7588 | uop->access = (st == ST_PUBLIC) |
7589 | ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
6de9cd9a DN |
7590 | } |
7591 | else | |
7592 | { | |
636dff67 SK |
7593 | gfc_error ("Access specification of the .%s. operator at %C " |
7594 | "has already been specified", sym->name); | |
6de9cd9a DN |
7595 | goto done; |
7596 | } | |
7597 | ||
7598 | break; | |
7599 | } | |
7600 | ||
7601 | if (gfc_match_char (',') == MATCH_NO) | |
7602 | break; | |
7603 | } | |
7604 | ||
7605 | if (gfc_match_eos () != MATCH_YES) | |
7606 | goto syntax; | |
7607 | return MATCH_YES; | |
7608 | ||
7609 | syntax: | |
7610 | gfc_syntax_error (st); | |
7611 | ||
7612 | done: | |
7613 | return MATCH_ERROR; | |
7614 | } | |
7615 | ||
7616 | ||
ee7e677f TB |
7617 | match |
7618 | gfc_match_protected (void) | |
7619 | { | |
7620 | gfc_symbol *sym; | |
7621 | match m; | |
7622 | ||
73641c88 SK |
7623 | if (!gfc_current_ns->proc_name |
7624 | || gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
ee7e677f TB |
7625 | { |
7626 | gfc_error ("PROTECTED at %C only allowed in specification " | |
7627 | "part of a module"); | |
7628 | return MATCH_ERROR; | |
7629 | ||
7630 | } | |
7631 | ||
524af0d6 | 7632 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED statement at %C")) |
ee7e677f TB |
7633 | return MATCH_ERROR; |
7634 | ||
7635 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7636 | { | |
7637 | return MATCH_ERROR; | |
7638 | } | |
7639 | ||
7640 | if (gfc_match_eos () == MATCH_YES) | |
7641 | goto syntax; | |
7642 | ||
7643 | for(;;) | |
7644 | { | |
7645 | m = gfc_match_symbol (&sym, 0); | |
7646 | switch (m) | |
7647 | { | |
7648 | case MATCH_YES: | |
524af0d6 | 7649 | if (!gfc_add_protected (&sym->attr, sym->name, &gfc_current_locus)) |
ee7e677f TB |
7650 | return MATCH_ERROR; |
7651 | goto next_item; | |
7652 | ||
7653 | case MATCH_NO: | |
7654 | break; | |
7655 | ||
7656 | case MATCH_ERROR: | |
7657 | return MATCH_ERROR; | |
7658 | } | |
7659 | ||
7660 | next_item: | |
7661 | if (gfc_match_eos () == MATCH_YES) | |
7662 | break; | |
7663 | if (gfc_match_char (',') != MATCH_YES) | |
7664 | goto syntax; | |
7665 | } | |
7666 | ||
7667 | return MATCH_YES; | |
7668 | ||
7669 | syntax: | |
7670 | gfc_error ("Syntax error in PROTECTED statement at %C"); | |
7671 | return MATCH_ERROR; | |
7672 | } | |
7673 | ||
7674 | ||
86bf520d | 7675 | /* The PRIVATE statement is a bit weird in that it can be an attribute |
df2fba9e | 7676 | declaration, but also works as a standalone statement inside of a |
6de9cd9a DN |
7677 | type declaration or a module. */ |
7678 | ||
7679 | match | |
636dff67 | 7680 | gfc_match_private (gfc_statement *st) |
6de9cd9a DN |
7681 | { |
7682 | ||
7683 | if (gfc_match ("private") != MATCH_YES) | |
7684 | return MATCH_NO; | |
7685 | ||
d51347f9 | 7686 | if (gfc_current_state () != COMP_MODULE |
30b608eb DK |
7687 | && !(gfc_current_state () == COMP_DERIVED |
7688 | && gfc_state_stack->previous | |
7689 | && gfc_state_stack->previous->state == COMP_MODULE) | |
7690 | && !(gfc_current_state () == COMP_DERIVED_CONTAINS | |
7691 | && gfc_state_stack->previous && gfc_state_stack->previous->previous | |
7692 | && gfc_state_stack->previous->previous->state == COMP_MODULE)) | |
d51347f9 TB |
7693 | { |
7694 | gfc_error ("PRIVATE statement at %C is only allowed in the " | |
7695 | "specification part of a module"); | |
7696 | return MATCH_ERROR; | |
7697 | } | |
7698 | ||
6de9cd9a DN |
7699 | if (gfc_current_state () == COMP_DERIVED) |
7700 | { | |
7701 | if (gfc_match_eos () == MATCH_YES) | |
7702 | { | |
7703 | *st = ST_PRIVATE; | |
7704 | return MATCH_YES; | |
7705 | } | |
7706 | ||
7707 | gfc_syntax_error (ST_PRIVATE); | |
7708 | return MATCH_ERROR; | |
7709 | } | |
7710 | ||
7711 | if (gfc_match_eos () == MATCH_YES) | |
7712 | { | |
7713 | *st = ST_PRIVATE; | |
7714 | return MATCH_YES; | |
7715 | } | |
7716 | ||
7717 | *st = ST_ATTR_DECL; | |
7718 | return access_attr_decl (ST_PRIVATE); | |
7719 | } | |
7720 | ||
7721 | ||
7722 | match | |
636dff67 | 7723 | gfc_match_public (gfc_statement *st) |
6de9cd9a DN |
7724 | { |
7725 | ||
7726 | if (gfc_match ("public") != MATCH_YES) | |
7727 | return MATCH_NO; | |
7728 | ||
d51347f9 TB |
7729 | if (gfc_current_state () != COMP_MODULE) |
7730 | { | |
7731 | gfc_error ("PUBLIC statement at %C is only allowed in the " | |
7732 | "specification part of a module"); | |
7733 | return MATCH_ERROR; | |
7734 | } | |
7735 | ||
6de9cd9a DN |
7736 | if (gfc_match_eos () == MATCH_YES) |
7737 | { | |
7738 | *st = ST_PUBLIC; | |
7739 | return MATCH_YES; | |
7740 | } | |
7741 | ||
7742 | *st = ST_ATTR_DECL; | |
7743 | return access_attr_decl (ST_PUBLIC); | |
7744 | } | |
7745 | ||
7746 | ||
7747 | /* Workhorse for gfc_match_parameter. */ | |
7748 | ||
7749 | static match | |
7750 | do_parm (void) | |
7751 | { | |
7752 | gfc_symbol *sym; | |
7753 | gfc_expr *init; | |
7754 | match m; | |
524af0d6 | 7755 | bool t; |
6de9cd9a DN |
7756 | |
7757 | m = gfc_match_symbol (&sym, 0); | |
7758 | if (m == MATCH_NO) | |
7759 | gfc_error ("Expected variable name at %C in PARAMETER statement"); | |
7760 | ||
7761 | if (m != MATCH_YES) | |
7762 | return m; | |
7763 | ||
7764 | if (gfc_match_char ('=') == MATCH_NO) | |
7765 | { | |
7766 | gfc_error ("Expected = sign in PARAMETER statement at %C"); | |
7767 | return MATCH_ERROR; | |
7768 | } | |
7769 | ||
7770 | m = gfc_match_init_expr (&init); | |
7771 | if (m == MATCH_NO) | |
7772 | gfc_error ("Expected expression at %C in PARAMETER statement"); | |
7773 | if (m != MATCH_YES) | |
7774 | return m; | |
7775 | ||
7776 | if (sym->ts.type == BT_UNKNOWN | |
524af0d6 | 7777 | && !gfc_set_default_type (sym, 1, NULL)) |
6de9cd9a DN |
7778 | { |
7779 | m = MATCH_ERROR; | |
7780 | goto cleanup; | |
7781 | } | |
7782 | ||
524af0d6 JB |
7783 | if (!gfc_check_assign_symbol (sym, NULL, init) |
7784 | || !gfc_add_flavor (&sym->attr, FL_PARAMETER, sym->name, NULL)) | |
6de9cd9a DN |
7785 | { |
7786 | m = MATCH_ERROR; | |
7787 | goto cleanup; | |
7788 | } | |
7789 | ||
1283ab12 TB |
7790 | if (sym->value) |
7791 | { | |
7792 | gfc_error ("Initializing already initialized variable at %C"); | |
7793 | m = MATCH_ERROR; | |
7794 | goto cleanup; | |
7795 | } | |
7796 | ||
7919373d | 7797 | t = add_init_expr_to_sym (sym->name, &init, &gfc_current_locus); |
524af0d6 | 7798 | return (t) ? MATCH_YES : MATCH_ERROR; |
6de9cd9a DN |
7799 | |
7800 | cleanup: | |
7801 | gfc_free_expr (init); | |
7802 | return m; | |
7803 | } | |
7804 | ||
7805 | ||
7806 | /* Match a parameter statement, with the weird syntax that these have. */ | |
7807 | ||
7808 | match | |
7809 | gfc_match_parameter (void) | |
7810 | { | |
7811 | match m; | |
7812 | ||
7813 | if (gfc_match_char ('(') == MATCH_NO) | |
7814 | return MATCH_NO; | |
7815 | ||
7816 | for (;;) | |
7817 | { | |
7818 | m = do_parm (); | |
7819 | if (m != MATCH_YES) | |
7820 | break; | |
7821 | ||
7822 | if (gfc_match (" )%t") == MATCH_YES) | |
7823 | break; | |
7824 | ||
7825 | if (gfc_match_char (',') != MATCH_YES) | |
7826 | { | |
7827 | gfc_error ("Unexpected characters in PARAMETER statement at %C"); | |
7828 | m = MATCH_ERROR; | |
7829 | break; | |
7830 | } | |
7831 | } | |
7832 | ||
7833 | return m; | |
7834 | } | |
7835 | ||
7836 | ||
34d567d1 FR |
7837 | match |
7838 | gfc_match_automatic (void) | |
7839 | { | |
7840 | gfc_symbol *sym; | |
7841 | match m; | |
7842 | bool seen_symbol = false; | |
7843 | ||
7844 | if (!flag_dec_static) | |
7845 | { | |
7846 | gfc_error ("AUTOMATIC at %C is a DEC extension, enable with " | |
7847 | "-fdec-static"); | |
7848 | return MATCH_ERROR; | |
7849 | } | |
7850 | ||
7851 | gfc_match (" ::"); | |
7852 | ||
7853 | for (;;) | |
7854 | { | |
7855 | m = gfc_match_symbol (&sym, 0); | |
7856 | switch (m) | |
7857 | { | |
7858 | case MATCH_NO: | |
7859 | break; | |
7860 | ||
7861 | case MATCH_ERROR: | |
7862 | return MATCH_ERROR; | |
7863 | ||
7864 | case MATCH_YES: | |
7865 | if (!gfc_add_automatic (&sym->attr, sym->name, &gfc_current_locus)) | |
7866 | return MATCH_ERROR; | |
7867 | seen_symbol = true; | |
7868 | break; | |
7869 | } | |
7870 | ||
7871 | if (gfc_match_eos () == MATCH_YES) | |
7872 | break; | |
7873 | if (gfc_match_char (',') != MATCH_YES) | |
7874 | goto syntax; | |
7875 | } | |
7876 | ||
7877 | if (!seen_symbol) | |
7878 | { | |
7879 | gfc_error ("Expected entity-list in AUTOMATIC statement at %C"); | |
7880 | return MATCH_ERROR; | |
7881 | } | |
7882 | ||
7883 | return MATCH_YES; | |
7884 | ||
7885 | syntax: | |
7886 | gfc_error ("Syntax error in AUTOMATIC statement at %C"); | |
7887 | return MATCH_ERROR; | |
7888 | } | |
7889 | ||
7890 | ||
7891 | match | |
7892 | gfc_match_static (void) | |
7893 | { | |
7894 | gfc_symbol *sym; | |
7895 | match m; | |
7896 | bool seen_symbol = false; | |
7897 | ||
7898 | if (!flag_dec_static) | |
7899 | { | |
7900 | gfc_error ("STATIC at %C is a DEC extension, enable with -fdec-static"); | |
7901 | return MATCH_ERROR; | |
7902 | } | |
7903 | ||
7904 | gfc_match (" ::"); | |
7905 | ||
7906 | for (;;) | |
7907 | { | |
7908 | m = gfc_match_symbol (&sym, 0); | |
7909 | switch (m) | |
7910 | { | |
7911 | case MATCH_NO: | |
7912 | break; | |
7913 | ||
7914 | case MATCH_ERROR: | |
7915 | return MATCH_ERROR; | |
7916 | ||
7917 | case MATCH_YES: | |
7918 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, | |
7919 | &gfc_current_locus)) | |
7920 | return MATCH_ERROR; | |
7921 | seen_symbol = true; | |
7922 | break; | |
7923 | } | |
7924 | ||
7925 | if (gfc_match_eos () == MATCH_YES) | |
7926 | break; | |
7927 | if (gfc_match_char (',') != MATCH_YES) | |
7928 | goto syntax; | |
7929 | } | |
7930 | ||
7931 | if (!seen_symbol) | |
7932 | { | |
7933 | gfc_error ("Expected entity-list in STATIC statement at %C"); | |
7934 | return MATCH_ERROR; | |
7935 | } | |
7936 | ||
7937 | return MATCH_YES; | |
7938 | ||
7939 | syntax: | |
7940 | gfc_error ("Syntax error in STATIC statement at %C"); | |
7941 | return MATCH_ERROR; | |
7942 | } | |
7943 | ||
7944 | ||
6de9cd9a DN |
7945 | /* Save statements have a special syntax. */ |
7946 | ||
7947 | match | |
7948 | gfc_match_save (void) | |
7949 | { | |
9056bd70 TS |
7950 | char n[GFC_MAX_SYMBOL_LEN+1]; |
7951 | gfc_common_head *c; | |
6de9cd9a DN |
7952 | gfc_symbol *sym; |
7953 | match m; | |
7954 | ||
7955 | if (gfc_match_eos () == MATCH_YES) | |
7956 | { | |
7957 | if (gfc_current_ns->seen_save) | |
7958 | { | |
524af0d6 JB |
7959 | if (!gfc_notify_std (GFC_STD_LEGACY, "Blanket SAVE statement at %C " |
7960 | "follows previous SAVE statement")) | |
09e87839 | 7961 | return MATCH_ERROR; |
6de9cd9a DN |
7962 | } |
7963 | ||
7964 | gfc_current_ns->save_all = gfc_current_ns->seen_save = 1; | |
7965 | return MATCH_YES; | |
7966 | } | |
7967 | ||
7968 | if (gfc_current_ns->save_all) | |
7969 | { | |
524af0d6 JB |
7970 | if (!gfc_notify_std (GFC_STD_LEGACY, "SAVE statement at %C follows " |
7971 | "blanket SAVE statement")) | |
09e87839 | 7972 | return MATCH_ERROR; |
6de9cd9a DN |
7973 | } |
7974 | ||
7975 | gfc_match (" ::"); | |
7976 | ||
7977 | for (;;) | |
7978 | { | |
7979 | m = gfc_match_symbol (&sym, 0); | |
7980 | switch (m) | |
7981 | { | |
7982 | case MATCH_YES: | |
70112e2a | 7983 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, |
524af0d6 | 7984 | &gfc_current_locus)) |
6de9cd9a DN |
7985 | return MATCH_ERROR; |
7986 | goto next_item; | |
7987 | ||
7988 | case MATCH_NO: | |
7989 | break; | |
7990 | ||
7991 | case MATCH_ERROR: | |
7992 | return MATCH_ERROR; | |
7993 | } | |
7994 | ||
9056bd70 | 7995 | m = gfc_match (" / %n /", &n); |
6de9cd9a DN |
7996 | if (m == MATCH_ERROR) |
7997 | return MATCH_ERROR; | |
7998 | if (m == MATCH_NO) | |
7999 | goto syntax; | |
8000 | ||
53814b8f | 8001 | c = gfc_get_common (n, 0); |
9056bd70 TS |
8002 | c->saved = 1; |
8003 | ||
6de9cd9a DN |
8004 | gfc_current_ns->seen_save = 1; |
8005 | ||
8006 | next_item: | |
8007 | if (gfc_match_eos () == MATCH_YES) | |
8008 | break; | |
8009 | if (gfc_match_char (',') != MATCH_YES) | |
8010 | goto syntax; | |
8011 | } | |
8012 | ||
8013 | return MATCH_YES; | |
8014 | ||
8015 | syntax: | |
8016 | gfc_error ("Syntax error in SAVE statement at %C"); | |
8017 | return MATCH_ERROR; | |
8018 | } | |
8019 | ||
8020 | ||
06469efd PT |
8021 | match |
8022 | gfc_match_value (void) | |
8023 | { | |
8024 | gfc_symbol *sym; | |
8025 | match m; | |
8026 | ||
9abe5e56 DK |
8027 | /* This is not allowed within a BLOCK construct! */ |
8028 | if (gfc_current_state () == COMP_BLOCK) | |
8029 | { | |
8030 | gfc_error ("VALUE is not allowed inside of BLOCK at %C"); | |
8031 | return MATCH_ERROR; | |
8032 | } | |
8033 | ||
524af0d6 | 8034 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE statement at %C")) |
06469efd PT |
8035 | return MATCH_ERROR; |
8036 | ||
8037 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8038 | { | |
8039 | return MATCH_ERROR; | |
8040 | } | |
8041 | ||
8042 | if (gfc_match_eos () == MATCH_YES) | |
8043 | goto syntax; | |
8044 | ||
8045 | for(;;) | |
8046 | { | |
8047 | m = gfc_match_symbol (&sym, 0); | |
8048 | switch (m) | |
8049 | { | |
8050 | case MATCH_YES: | |
524af0d6 | 8051 | if (!gfc_add_value (&sym->attr, sym->name, &gfc_current_locus)) |
06469efd PT |
8052 | return MATCH_ERROR; |
8053 | goto next_item; | |
8054 | ||
8055 | case MATCH_NO: | |
8056 | break; | |
8057 | ||
8058 | case MATCH_ERROR: | |
8059 | return MATCH_ERROR; | |
8060 | } | |
8061 | ||
8062 | next_item: | |
8063 | if (gfc_match_eos () == MATCH_YES) | |
8064 | break; | |
8065 | if (gfc_match_char (',') != MATCH_YES) | |
8066 | goto syntax; | |
8067 | } | |
8068 | ||
8069 | return MATCH_YES; | |
8070 | ||
8071 | syntax: | |
8072 | gfc_error ("Syntax error in VALUE statement at %C"); | |
8073 | return MATCH_ERROR; | |
8074 | } | |
8075 | ||
66e4ab31 | 8076 | |
775e6c3a TB |
8077 | match |
8078 | gfc_match_volatile (void) | |
8079 | { | |
8080 | gfc_symbol *sym; | |
8081 | match m; | |
8082 | ||
524af0d6 | 8083 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE statement at %C")) |
775e6c3a TB |
8084 | return MATCH_ERROR; |
8085 | ||
8086 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8087 | { | |
8088 | return MATCH_ERROR; | |
8089 | } | |
8090 | ||
8091 | if (gfc_match_eos () == MATCH_YES) | |
8092 | goto syntax; | |
8093 | ||
8094 | for(;;) | |
8095 | { | |
f5acf0f2 | 8096 | /* VOLATILE is special because it can be added to host-associated |
1cc0e193 | 8097 | symbols locally. Except for coarrays. */ |
9bce3c1c | 8098 | m = gfc_match_symbol (&sym, 1); |
775e6c3a TB |
8099 | switch (m) |
8100 | { | |
8101 | case MATCH_YES: | |
be59db2d TB |
8102 | /* F2008, C560+C561. VOLATILE for host-/use-associated variable or |
8103 | for variable in a BLOCK which is defined outside of the BLOCK. */ | |
8104 | if (sym->ns != gfc_current_ns && sym->attr.codimension) | |
8105 | { | |
c4100eae | 8106 | gfc_error ("Specifying VOLATILE for coarray variable %qs at " |
be59db2d TB |
8107 | "%C, which is use-/host-associated", sym->name); |
8108 | return MATCH_ERROR; | |
8109 | } | |
524af0d6 | 8110 | if (!gfc_add_volatile (&sym->attr, sym->name, &gfc_current_locus)) |
775e6c3a TB |
8111 | return MATCH_ERROR; |
8112 | goto next_item; | |
8113 | ||
8114 | case MATCH_NO: | |
8115 | break; | |
8116 | ||
8117 | case MATCH_ERROR: | |
8118 | return MATCH_ERROR; | |
8119 | } | |
8120 | ||
8121 | next_item: | |
8122 | if (gfc_match_eos () == MATCH_YES) | |
8123 | break; | |
8124 | if (gfc_match_char (',') != MATCH_YES) | |
8125 | goto syntax; | |
8126 | } | |
8127 | ||
8128 | return MATCH_YES; | |
8129 | ||
8130 | syntax: | |
8131 | gfc_error ("Syntax error in VOLATILE statement at %C"); | |
8132 | return MATCH_ERROR; | |
8133 | } | |
8134 | ||
8135 | ||
1eee5628 TB |
8136 | match |
8137 | gfc_match_asynchronous (void) | |
8138 | { | |
8139 | gfc_symbol *sym; | |
8140 | match m; | |
8141 | ||
524af0d6 | 8142 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS statement at %C")) |
1eee5628 TB |
8143 | return MATCH_ERROR; |
8144 | ||
8145 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8146 | { | |
8147 | return MATCH_ERROR; | |
8148 | } | |
8149 | ||
8150 | if (gfc_match_eos () == MATCH_YES) | |
8151 | goto syntax; | |
8152 | ||
8153 | for(;;) | |
8154 | { | |
f5acf0f2 | 8155 | /* ASYNCHRONOUS is special because it can be added to host-associated |
1eee5628 TB |
8156 | symbols locally. */ |
8157 | m = gfc_match_symbol (&sym, 1); | |
8158 | switch (m) | |
8159 | { | |
8160 | case MATCH_YES: | |
524af0d6 | 8161 | if (!gfc_add_asynchronous (&sym->attr, sym->name, &gfc_current_locus)) |
1eee5628 TB |
8162 | return MATCH_ERROR; |
8163 | goto next_item; | |
8164 | ||
8165 | case MATCH_NO: | |
8166 | break; | |
8167 | ||
8168 | case MATCH_ERROR: | |
8169 | return MATCH_ERROR; | |
8170 | } | |
8171 | ||
8172 | next_item: | |
8173 | if (gfc_match_eos () == MATCH_YES) | |
8174 | break; | |
8175 | if (gfc_match_char (',') != MATCH_YES) | |
8176 | goto syntax; | |
8177 | } | |
8178 | ||
8179 | return MATCH_YES; | |
8180 | ||
8181 | syntax: | |
8182 | gfc_error ("Syntax error in ASYNCHRONOUS statement at %C"); | |
8183 | return MATCH_ERROR; | |
8184 | } | |
8185 | ||
8186 | ||
4668d6f9 PT |
8187 | /* Match a module procedure statement in a submodule. */ |
8188 | ||
8189 | match | |
8190 | gfc_match_submod_proc (void) | |
8191 | { | |
8192 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8193 | gfc_symbol *sym, *fsym; | |
8194 | match m; | |
8195 | gfc_formal_arglist *formal, *head, *tail; | |
8196 | ||
8197 | if (gfc_current_state () != COMP_CONTAINS | |
8198 | || !(gfc_state_stack->previous | |
70112e2a PT |
8199 | && (gfc_state_stack->previous->state == COMP_SUBMODULE |
8200 | || gfc_state_stack->previous->state == COMP_MODULE))) | |
4668d6f9 PT |
8201 | return MATCH_NO; |
8202 | ||
8203 | m = gfc_match (" module% procedure% %n", name); | |
8204 | if (m != MATCH_YES) | |
8205 | return m; | |
8206 | ||
8207 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE PROCEDURE declaration " | |
8208 | "at %C")) | |
8209 | return MATCH_ERROR; | |
8210 | ||
8211 | if (get_proc_name (name, &sym, false)) | |
8212 | return MATCH_ERROR; | |
8213 | ||
8214 | /* Make sure that the result field is appropriately filled, even though | |
8215 | the result symbol will be replaced later on. */ | |
cded7919 | 8216 | if (sym->ts.interface && sym->ts.interface->attr.function) |
4668d6f9 PT |
8217 | { |
8218 | if (sym->ts.interface->result | |
8219 | && sym->ts.interface->result != sym->ts.interface) | |
8220 | sym->result= sym->ts.interface->result; | |
8221 | else | |
8222 | sym->result = sym; | |
8223 | } | |
8224 | ||
8225 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if | |
8226 | the symbol existed before. */ | |
8227 | sym->declared_at = gfc_current_locus; | |
8228 | ||
8229 | if (!sym->attr.module_procedure) | |
8230 | return MATCH_ERROR; | |
8231 | ||
8232 | /* Signal match_end to expect "end procedure". */ | |
8233 | sym->abr_modproc_decl = 1; | |
8234 | ||
8235 | /* Change from IFSRC_IFBODY coming from the interface declaration. */ | |
8236 | sym->attr.if_source = IFSRC_DECL; | |
8237 | ||
8238 | gfc_new_block = sym; | |
8239 | ||
8240 | /* Make a new formal arglist with the symbols in the procedure | |
8241 | namespace. */ | |
8242 | head = tail = NULL; | |
8243 | for (formal = sym->formal; formal && formal->sym; formal = formal->next) | |
8244 | { | |
8245 | if (formal == sym->formal) | |
8246 | head = tail = gfc_get_formal_arglist (); | |
8247 | else | |
8248 | { | |
8249 | tail->next = gfc_get_formal_arglist (); | |
8250 | tail = tail->next; | |
8251 | } | |
8252 | ||
8253 | if (gfc_copy_dummy_sym (&fsym, formal->sym, 0)) | |
8254 | goto cleanup; | |
8255 | ||
8256 | tail->sym = fsym; | |
8257 | gfc_set_sym_referenced (fsym); | |
8258 | } | |
8259 | ||
8260 | /* The dummy symbols get cleaned up, when the formal_namespace of the | |
8261 | interface declaration is cleared. This allows us to add the | |
8262 | explicit interface as is done for other type of procedure. */ | |
8263 | if (!gfc_add_explicit_interface (sym, IFSRC_DECL, head, | |
8264 | &gfc_current_locus)) | |
8265 | return MATCH_ERROR; | |
8266 | ||
8267 | if (gfc_match_eos () != MATCH_YES) | |
8268 | { | |
8269 | gfc_syntax_error (ST_MODULE_PROC); | |
8270 | return MATCH_ERROR; | |
8271 | } | |
8272 | ||
8273 | return MATCH_YES; | |
8274 | ||
8275 | cleanup: | |
8276 | gfc_free_formal_arglist (head); | |
8277 | return MATCH_ERROR; | |
8278 | } | |
8279 | ||
8280 | ||
6de9cd9a DN |
8281 | /* Match a module procedure statement. Note that we have to modify |
8282 | symbols in the parent's namespace because the current one was there | |
49de9e73 | 8283 | to receive symbols that are in an interface's formal argument list. */ |
6de9cd9a DN |
8284 | |
8285 | match | |
8286 | gfc_match_modproc (void) | |
8287 | { | |
8288 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8289 | gfc_symbol *sym; | |
8290 | match m; | |
162b5a21 | 8291 | locus old_locus; |
060fca4a | 8292 | gfc_namespace *module_ns; |
2b77e908 | 8293 | gfc_interface *old_interface_head, *interface; |
6de9cd9a DN |
8294 | |
8295 | if (gfc_state_stack->state != COMP_INTERFACE | |
8296 | || gfc_state_stack->previous == NULL | |
129d15a3 JW |
8297 | || current_interface.type == INTERFACE_NAMELESS |
8298 | || current_interface.type == INTERFACE_ABSTRACT) | |
6de9cd9a | 8299 | { |
636dff67 SK |
8300 | gfc_error ("MODULE PROCEDURE at %C must be in a generic module " |
8301 | "interface"); | |
6de9cd9a DN |
8302 | return MATCH_ERROR; |
8303 | } | |
8304 | ||
060fca4a PT |
8305 | module_ns = gfc_current_ns->parent; |
8306 | for (; module_ns; module_ns = module_ns->parent) | |
43dfd40c SK |
8307 | if (module_ns->proc_name->attr.flavor == FL_MODULE |
8308 | || module_ns->proc_name->attr.flavor == FL_PROGRAM | |
8309 | || (module_ns->proc_name->attr.flavor == FL_PROCEDURE | |
8310 | && !module_ns->proc_name->attr.contained)) | |
060fca4a PT |
8311 | break; |
8312 | ||
8313 | if (module_ns == NULL) | |
8314 | return MATCH_ERROR; | |
8315 | ||
2b77e908 FXC |
8316 | /* Store the current state of the interface. We will need it if we |
8317 | end up with a syntax error and need to recover. */ | |
8318 | old_interface_head = gfc_current_interface_head (); | |
8319 | ||
162b5a21 SK |
8320 | /* Check if the F2008 optional double colon appears. */ |
8321 | gfc_gobble_whitespace (); | |
8322 | old_locus = gfc_current_locus; | |
8323 | if (gfc_match ("::") == MATCH_YES) | |
8324 | { | |
524af0d6 JB |
8325 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
8326 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
162b5a21 SK |
8327 | return MATCH_ERROR; |
8328 | } | |
8329 | else | |
8330 | gfc_current_locus = old_locus; | |
f5acf0f2 | 8331 | |
6de9cd9a DN |
8332 | for (;;) |
8333 | { | |
2b77e908 | 8334 | bool last = false; |
162b5a21 | 8335 | old_locus = gfc_current_locus; |
2b77e908 | 8336 | |
6de9cd9a DN |
8337 | m = gfc_match_name (name); |
8338 | if (m == MATCH_NO) | |
8339 | goto syntax; | |
8340 | if (m != MATCH_YES) | |
8341 | return MATCH_ERROR; | |
8342 | ||
2b77e908 FXC |
8343 | /* Check for syntax error before starting to add symbols to the |
8344 | current namespace. */ | |
8345 | if (gfc_match_eos () == MATCH_YES) | |
8346 | last = true; | |
162b5a21 | 8347 | |
2b77e908 FXC |
8348 | if (!last && gfc_match_char (',') != MATCH_YES) |
8349 | goto syntax; | |
8350 | ||
8351 | /* Now we're sure the syntax is valid, we process this item | |
8352 | further. */ | |
060fca4a | 8353 | if (gfc_get_symbol (name, module_ns, &sym)) |
6de9cd9a DN |
8354 | return MATCH_ERROR; |
8355 | ||
43dfd40c SK |
8356 | if (sym->attr.intrinsic) |
8357 | { | |
8358 | gfc_error ("Intrinsic procedure at %L cannot be a MODULE " | |
8359 | "PROCEDURE", &old_locus); | |
8360 | return MATCH_ERROR; | |
8361 | } | |
8362 | ||
6de9cd9a | 8363 | if (sym->attr.proc != PROC_MODULE |
524af0d6 | 8364 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
6de9cd9a DN |
8365 | return MATCH_ERROR; |
8366 | ||
524af0d6 | 8367 | if (!gfc_add_interface (sym)) |
6de9cd9a DN |
8368 | return MATCH_ERROR; |
8369 | ||
71f77fd7 | 8370 | sym->attr.mod_proc = 1; |
43dfd40c | 8371 | sym->declared_at = old_locus; |
71f77fd7 | 8372 | |
2b77e908 | 8373 | if (last) |
6de9cd9a | 8374 | break; |
6de9cd9a DN |
8375 | } |
8376 | ||
8377 | return MATCH_YES; | |
8378 | ||
8379 | syntax: | |
2b77e908 FXC |
8380 | /* Restore the previous state of the interface. */ |
8381 | interface = gfc_current_interface_head (); | |
8382 | gfc_set_current_interface_head (old_interface_head); | |
8383 | ||
8384 | /* Free the new interfaces. */ | |
8385 | while (interface != old_interface_head) | |
8386 | { | |
8387 | gfc_interface *i = interface->next; | |
cede9502 | 8388 | free (interface); |
2b77e908 FXC |
8389 | interface = i; |
8390 | } | |
8391 | ||
8392 | /* And issue a syntax error. */ | |
6de9cd9a DN |
8393 | gfc_syntax_error (ST_MODULE_PROC); |
8394 | return MATCH_ERROR; | |
8395 | } | |
8396 | ||
8397 | ||
7d1f1e61 | 8398 | /* Check a derived type that is being extended. */ |
42e3d759 | 8399 | |
7d1f1e61 PT |
8400 | static gfc_symbol* |
8401 | check_extended_derived_type (char *name) | |
8402 | { | |
8403 | gfc_symbol *extended; | |
8404 | ||
8405 | if (gfc_find_symbol (name, gfc_current_ns, 1, &extended)) | |
8406 | { | |
8407 | gfc_error ("Ambiguous symbol in TYPE definition at %C"); | |
8408 | return NULL; | |
8409 | } | |
8410 | ||
42e3d759 JW |
8411 | extended = gfc_find_dt_in_generic (extended); |
8412 | ||
8413 | /* F08:C428. */ | |
7d1f1e61 PT |
8414 | if (!extended) |
8415 | { | |
c4100eae | 8416 | gfc_error ("Symbol %qs at %C has not been previously defined", name); |
7d1f1e61 PT |
8417 | return NULL; |
8418 | } | |
8419 | ||
8420 | if (extended->attr.flavor != FL_DERIVED) | |
8421 | { | |
c4100eae | 8422 | gfc_error ("%qs in EXTENDS expression at %C is not a " |
7d1f1e61 PT |
8423 | "derived type", name); |
8424 | return NULL; | |
8425 | } | |
8426 | ||
8427 | if (extended->attr.is_bind_c) | |
8428 | { | |
c4100eae | 8429 | gfc_error ("%qs cannot be extended at %C because it " |
7d1f1e61 PT |
8430 | "is BIND(C)", extended->name); |
8431 | return NULL; | |
8432 | } | |
8433 | ||
8434 | if (extended->attr.sequence) | |
8435 | { | |
c4100eae | 8436 | gfc_error ("%qs cannot be extended at %C because it " |
7d1f1e61 PT |
8437 | "is a SEQUENCE type", extended->name); |
8438 | return NULL; | |
8439 | } | |
8440 | ||
8441 | return extended; | |
8442 | } | |
8443 | ||
8444 | ||
a8b3b0b6 CR |
8445 | /* Match the optional attribute specifiers for a type declaration. |
8446 | Return MATCH_ERROR if an error is encountered in one of the handled | |
8447 | attributes (public, private, bind(c)), MATCH_NO if what's found is | |
8448 | not a handled attribute, and MATCH_YES otherwise. TODO: More error | |
8449 | checking on attribute conflicts needs to be done. */ | |
6de9cd9a DN |
8450 | |
8451 | match | |
7d1f1e61 | 8452 | gfc_get_type_attr_spec (symbol_attribute *attr, char *name) |
6de9cd9a | 8453 | { |
a8b3b0b6 | 8454 | /* See if the derived type is marked as private. */ |
6de9cd9a DN |
8455 | if (gfc_match (" , private") == MATCH_YES) |
8456 | { | |
d51347f9 | 8457 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 8458 | { |
d51347f9 TB |
8459 | gfc_error ("Derived type at %C can only be PRIVATE in the " |
8460 | "specification part of a module"); | |
6de9cd9a DN |
8461 | return MATCH_ERROR; |
8462 | } | |
8463 | ||
524af0d6 | 8464 | if (!gfc_add_access (attr, ACCESS_PRIVATE, NULL, NULL)) |
6de9cd9a | 8465 | return MATCH_ERROR; |
6de9cd9a | 8466 | } |
a8b3b0b6 | 8467 | else if (gfc_match (" , public") == MATCH_YES) |
6de9cd9a | 8468 | { |
d51347f9 | 8469 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 8470 | { |
d51347f9 TB |
8471 | gfc_error ("Derived type at %C can only be PUBLIC in the " |
8472 | "specification part of a module"); | |
6de9cd9a DN |
8473 | return MATCH_ERROR; |
8474 | } | |
8475 | ||
524af0d6 | 8476 | if (!gfc_add_access (attr, ACCESS_PUBLIC, NULL, NULL)) |
6de9cd9a | 8477 | return MATCH_ERROR; |
6de9cd9a | 8478 | } |
52f49934 | 8479 | else if (gfc_match (" , bind ( c )") == MATCH_YES) |
a8b3b0b6 CR |
8480 | { |
8481 | /* If the type is defined to be bind(c) it then needs to make | |
8482 | sure that all fields are interoperable. This will | |
8483 | need to be a semantic check on the finished derived type. | |
8484 | See 15.2.3 (lines 9-12) of F2003 draft. */ | |
524af0d6 | 8485 | if (!gfc_add_is_bind_c (attr, NULL, &gfc_current_locus, 0)) |
a8b3b0b6 CR |
8486 | return MATCH_ERROR; |
8487 | ||
8488 | /* TODO: attr conflicts need to be checked, probably in symbol.c. */ | |
8489 | } | |
52f49934 DK |
8490 | else if (gfc_match (" , abstract") == MATCH_YES) |
8491 | { | |
524af0d6 | 8492 | if (!gfc_notify_std (GFC_STD_F2003, "ABSTRACT type at %C")) |
52f49934 DK |
8493 | return MATCH_ERROR; |
8494 | ||
524af0d6 | 8495 | if (!gfc_add_abstract (attr, &gfc_current_locus)) |
52f49934 DK |
8496 | return MATCH_ERROR; |
8497 | } | |
524af0d6 | 8498 | else if (name && gfc_match (" , extends ( %n )", name) == MATCH_YES) |
7d1f1e61 | 8499 | { |
524af0d6 | 8500 | if (!gfc_add_extension (attr, &gfc_current_locus)) |
7d1f1e61 PT |
8501 | return MATCH_ERROR; |
8502 | } | |
a8b3b0b6 CR |
8503 | else |
8504 | return MATCH_NO; | |
8505 | ||
8506 | /* If we get here, something matched. */ | |
8507 | return MATCH_YES; | |
8508 | } | |
8509 | ||
8510 | ||
f6288c24 FR |
8511 | /* Common function for type declaration blocks similar to derived types, such |
8512 | as STRUCTURES and MAPs. Unlike derived types, a structure type | |
8513 | does NOT have a generic symbol matching the name given by the user. | |
8514 | STRUCTUREs can share names with variables and PARAMETERs so we must allow | |
8515 | for the creation of an independent symbol. | |
6442a6f4 | 8516 | Other parameters are a message to prefix errors with, the name of the new |
f6288c24 FR |
8517 | type to be created, and the flavor to add to the resulting symbol. */ |
8518 | ||
8519 | static bool | |
8520 | get_struct_decl (const char *name, sym_flavor fl, locus *decl, | |
8521 | gfc_symbol **result) | |
8522 | { | |
8523 | gfc_symbol *sym; | |
8524 | locus where; | |
8525 | ||
8526 | gcc_assert (name[0] == (char) TOUPPER (name[0])); | |
8527 | ||
8528 | if (decl) | |
8529 | where = *decl; | |
8530 | else | |
8531 | where = gfc_current_locus; | |
8532 | ||
8533 | if (gfc_get_symbol (name, NULL, &sym)) | |
8534 | return false; | |
8535 | ||
8536 | if (!sym) | |
8537 | { | |
8538 | gfc_internal_error ("Failed to create structure type '%s' at %C", name); | |
8539 | return false; | |
8540 | } | |
8541 | ||
8542 | if (sym->components != NULL || sym->attr.zero_comp) | |
8543 | { | |
6442a6f4 | 8544 | gfc_error ("Type definition of '%s' at %C was already defined at %L", |
f6288c24 FR |
8545 | sym->name, &sym->declared_at); |
8546 | return false; | |
8547 | } | |
8548 | ||
8549 | sym->declared_at = where; | |
8550 | ||
8551 | if (sym->attr.flavor != fl | |
8552 | && !gfc_add_flavor (&sym->attr, fl, sym->name, NULL)) | |
8553 | return false; | |
8554 | ||
8555 | if (!sym->hash_value) | |
8556 | /* Set the hash for the compound name for this type. */ | |
8557 | sym->hash_value = gfc_hash_value (sym); | |
8558 | ||
8559 | /* Normally the type is expected to have been completely parsed by the time | |
8560 | a field declaration with this type is seen. For unions, maps, and nested | |
8561 | structure declarations, we need to indicate that it is okay that we | |
8562 | haven't seen any components yet. This will be updated after the structure | |
8563 | is fully parsed. */ | |
8564 | sym->attr.zero_comp = 0; | |
8565 | ||
8566 | /* Structures always act like derived-types with the SEQUENCE attribute */ | |
8567 | gfc_add_sequence (&sym->attr, sym->name, NULL); | |
8568 | ||
8569 | if (result) *result = sym; | |
8570 | ||
8571 | return true; | |
8572 | } | |
8573 | ||
8574 | ||
8575 | /* Match the opening of a MAP block. Like a struct within a union in C; | |
8576 | behaves identical to STRUCTURE blocks. */ | |
8577 | ||
8578 | match | |
8579 | gfc_match_map (void) | |
8580 | { | |
8581 | /* Counter used to give unique internal names to map structures. */ | |
8582 | static unsigned int gfc_map_id = 0; | |
8583 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8584 | gfc_symbol *sym; | |
8585 | locus old_loc; | |
8586 | ||
8587 | old_loc = gfc_current_locus; | |
8588 | ||
8589 | if (gfc_match_eos () != MATCH_YES) | |
8590 | { | |
8591 | gfc_error ("Junk after MAP statement at %C"); | |
8592 | gfc_current_locus = old_loc; | |
8593 | return MATCH_ERROR; | |
8594 | } | |
8595 | ||
8596 | /* Map blocks are anonymous so we make up unique names for the symbol table | |
8597 | which are invalid Fortran identifiers. */ | |
8598 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "MM$%u", gfc_map_id++); | |
8599 | ||
8600 | if (!get_struct_decl (name, FL_STRUCT, &old_loc, &sym)) | |
8601 | return MATCH_ERROR; | |
8602 | ||
8603 | gfc_new_block = sym; | |
8604 | ||
8605 | return MATCH_YES; | |
8606 | } | |
8607 | ||
8608 | ||
8609 | /* Match the opening of a UNION block. */ | |
8610 | ||
8611 | match | |
8612 | gfc_match_union (void) | |
8613 | { | |
8614 | /* Counter used to give unique internal names to union types. */ | |
8615 | static unsigned int gfc_union_id = 0; | |
8616 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8617 | gfc_symbol *sym; | |
8618 | locus old_loc; | |
8619 | ||
8620 | old_loc = gfc_current_locus; | |
8621 | ||
8622 | if (gfc_match_eos () != MATCH_YES) | |
8623 | { | |
8624 | gfc_error ("Junk after UNION statement at %C"); | |
8625 | gfc_current_locus = old_loc; | |
8626 | return MATCH_ERROR; | |
8627 | } | |
8628 | ||
8629 | /* Unions are anonymous so we make up unique names for the symbol table | |
8630 | which are invalid Fortran identifiers. */ | |
8631 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "UU$%u", gfc_union_id++); | |
8632 | ||
8633 | if (!get_struct_decl (name, FL_UNION, &old_loc, &sym)) | |
8634 | return MATCH_ERROR; | |
8635 | ||
8636 | gfc_new_block = sym; | |
8637 | ||
8638 | return MATCH_YES; | |
8639 | } | |
8640 | ||
8641 | ||
8642 | /* Match the beginning of a STRUCTURE declaration. This is similar to | |
8643 | matching the beginning of a derived type declaration with a few | |
8644 | twists. The resulting type symbol has no access control or other | |
8645 | interesting attributes. */ | |
8646 | ||
8647 | match | |
8648 | gfc_match_structure_decl (void) | |
8649 | { | |
8650 | /* Counter used to give unique internal names to anonymous structures. */ | |
cfe37db4 | 8651 | static unsigned int gfc_structure_id = 0; |
f6288c24 FR |
8652 | char name[GFC_MAX_SYMBOL_LEN + 1]; |
8653 | gfc_symbol *sym; | |
8654 | match m; | |
8655 | locus where; | |
8656 | ||
8657 | if(!gfc_option.flag_dec_structure) | |
8658 | { | |
8659 | gfc_error ("STRUCTURE at %C is a DEC extension, enable with " | |
8660 | "-fdec-structure"); | |
8661 | return MATCH_ERROR; | |
8662 | } | |
8663 | ||
8664 | name[0] = '\0'; | |
8665 | ||
8666 | m = gfc_match (" /%n/", name); | |
8667 | if (m != MATCH_YES) | |
8668 | { | |
8669 | /* Non-nested structure declarations require a structure name. */ | |
8670 | if (!gfc_comp_struct (gfc_current_state ())) | |
8671 | { | |
8672 | gfc_error ("Structure name expected in non-nested structure " | |
8673 | "declaration at %C"); | |
8674 | return MATCH_ERROR; | |
8675 | } | |
8676 | /* This is an anonymous structure; make up a unique name for it | |
8677 | (upper-case letters never make it to symbol names from the source). | |
8678 | The important thing is initializing the type variable | |
8679 | and setting gfc_new_symbol, which is immediately used by | |
8680 | parse_structure () and variable_decl () to add components of | |
8681 | this type. */ | |
8682 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "SS$%u", gfc_structure_id++); | |
8683 | } | |
8684 | ||
8685 | where = gfc_current_locus; | |
8686 | /* No field list allowed after non-nested structure declaration. */ | |
8687 | if (!gfc_comp_struct (gfc_current_state ()) | |
8688 | && gfc_match_eos () != MATCH_YES) | |
8689 | { | |
8690 | gfc_error ("Junk after non-nested STRUCTURE statement at %C"); | |
8691 | return MATCH_ERROR; | |
8692 | } | |
8693 | ||
8694 | /* Make sure the name is not the name of an intrinsic type. */ | |
8695 | if (gfc_is_intrinsic_typename (name)) | |
8696 | { | |
8697 | gfc_error ("Structure name '%s' at %C cannot be the same as an" | |
8698 | " intrinsic type", name); | |
8699 | return MATCH_ERROR; | |
8700 | } | |
8701 | ||
8702 | /* Store the actual type symbol for the structure with an upper-case first | |
8703 | letter (an invalid Fortran identifier). */ | |
8704 | ||
8705 | sprintf (name, gfc_dt_upper_string (name)); | |
8706 | if (!get_struct_decl (name, FL_STRUCT, &where, &sym)) | |
8707 | return MATCH_ERROR; | |
8708 | ||
8709 | gfc_new_block = sym; | |
8710 | return MATCH_YES; | |
8711 | } | |
8712 | ||
a8b3b0b6 CR |
8713 | /* Match the beginning of a derived type declaration. If a type name |
8714 | was the result of a function, then it is possible to have a symbol | |
8715 | already to be known as a derived type yet have no components. */ | |
8716 | ||
8717 | match | |
8718 | gfc_match_derived_decl (void) | |
8719 | { | |
8720 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7d1f1e61 | 8721 | char parent[GFC_MAX_SYMBOL_LEN + 1]; |
a8b3b0b6 | 8722 | symbol_attribute attr; |
c3f34952 | 8723 | gfc_symbol *sym, *gensym; |
7d1f1e61 | 8724 | gfc_symbol *extended; |
a8b3b0b6 CR |
8725 | match m; |
8726 | match is_type_attr_spec = MATCH_NO; | |
e7303e85 | 8727 | bool seen_attr = false; |
c3f34952 | 8728 | gfc_interface *intr = NULL, *head; |
a8b3b0b6 | 8729 | |
f6288c24 | 8730 | if (gfc_comp_struct (gfc_current_state ())) |
a8b3b0b6 CR |
8731 | return MATCH_NO; |
8732 | ||
7d1f1e61 PT |
8733 | name[0] = '\0'; |
8734 | parent[0] = '\0'; | |
a8b3b0b6 | 8735 | gfc_clear_attr (&attr); |
7d1f1e61 | 8736 | extended = NULL; |
a8b3b0b6 CR |
8737 | |
8738 | do | |
8739 | { | |
7d1f1e61 | 8740 | is_type_attr_spec = gfc_get_type_attr_spec (&attr, parent); |
a8b3b0b6 CR |
8741 | if (is_type_attr_spec == MATCH_ERROR) |
8742 | return MATCH_ERROR; | |
e7303e85 FXC |
8743 | if (is_type_attr_spec == MATCH_YES) |
8744 | seen_attr = true; | |
a8b3b0b6 | 8745 | } while (is_type_attr_spec == MATCH_YES); |
6de9cd9a | 8746 | |
63a3341a PT |
8747 | /* Deal with derived type extensions. The extension attribute has |
8748 | been added to 'attr' but now the parent type must be found and | |
8749 | checked. */ | |
7d1f1e61 PT |
8750 | if (parent[0]) |
8751 | extended = check_extended_derived_type (parent); | |
8752 | ||
8753 | if (parent[0] && !extended) | |
8754 | return MATCH_ERROR; | |
8755 | ||
e7303e85 | 8756 | if (gfc_match (" ::") != MATCH_YES && seen_attr) |
6de9cd9a DN |
8757 | { |
8758 | gfc_error ("Expected :: in TYPE definition at %C"); | |
8759 | return MATCH_ERROR; | |
8760 | } | |
8761 | ||
8762 | m = gfc_match (" %n%t", name); | |
8763 | if (m != MATCH_YES) | |
8764 | return m; | |
8765 | ||
e9c06563 TB |
8766 | /* Make sure the name is not the name of an intrinsic type. */ |
8767 | if (gfc_is_intrinsic_typename (name)) | |
6de9cd9a | 8768 | { |
c4100eae | 8769 | gfc_error ("Type name %qs at %C cannot be the same as an intrinsic " |
636dff67 | 8770 | "type", name); |
6de9cd9a DN |
8771 | return MATCH_ERROR; |
8772 | } | |
8773 | ||
c3f34952 | 8774 | if (gfc_get_symbol (name, NULL, &gensym)) |
6de9cd9a DN |
8775 | return MATCH_ERROR; |
8776 | ||
c3f34952 | 8777 | if (!gensym->attr.generic && gensym->ts.type != BT_UNKNOWN) |
6de9cd9a | 8778 | { |
c4100eae | 8779 | gfc_error ("Derived type name %qs at %C already has a basic type " |
c3f34952 TB |
8780 | "of %s", gensym->name, gfc_typename (&gensym->ts)); |
8781 | return MATCH_ERROR; | |
8782 | } | |
8783 | ||
8784 | if (!gensym->attr.generic | |
524af0d6 | 8785 | && !gfc_add_generic (&gensym->attr, gensym->name, NULL)) |
c3f34952 TB |
8786 | return MATCH_ERROR; |
8787 | ||
8788 | if (!gensym->attr.function | |
524af0d6 | 8789 | && !gfc_add_function (&gensym->attr, gensym->name, NULL)) |
c3f34952 TB |
8790 | return MATCH_ERROR; |
8791 | ||
8792 | sym = gfc_find_dt_in_generic (gensym); | |
8793 | ||
8794 | if (sym && (sym->components != NULL || sym->attr.zero_comp)) | |
8795 | { | |
c4100eae | 8796 | gfc_error ("Derived type definition of %qs at %C has already been " |
c3f34952 | 8797 | "defined", sym->name); |
6de9cd9a DN |
8798 | return MATCH_ERROR; |
8799 | } | |
8800 | ||
c3f34952 TB |
8801 | if (!sym) |
8802 | { | |
8803 | /* Use upper case to save the actual derived-type symbol. */ | |
f6288c24 | 8804 | gfc_get_symbol (gfc_dt_upper_string (gensym->name), NULL, &sym); |
c3f34952 TB |
8805 | sym->name = gfc_get_string (gensym->name); |
8806 | head = gensym->generic; | |
8807 | intr = gfc_get_interface (); | |
8808 | intr->sym = sym; | |
8809 | intr->where = gfc_current_locus; | |
8810 | intr->sym->declared_at = gfc_current_locus; | |
8811 | intr->next = head; | |
8812 | gensym->generic = intr; | |
8813 | gensym->attr.if_source = IFSRC_DECL; | |
8814 | } | |
8815 | ||
6de9cd9a DN |
8816 | /* The symbol may already have the derived attribute without the |
8817 | components. The ways this can happen is via a function | |
8818 | definition, an INTRINSIC statement or a subtype in another | |
8819 | derived type that is a pointer. The first part of the AND clause | |
df2fba9e | 8820 | is true if the symbol is not the return value of a function. */ |
6de9cd9a | 8821 | if (sym->attr.flavor != FL_DERIVED |
524af0d6 | 8822 | && !gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL)) |
6de9cd9a DN |
8823 | return MATCH_ERROR; |
8824 | ||
6de9cd9a | 8825 | if (attr.access != ACCESS_UNKNOWN |
524af0d6 | 8826 | && !gfc_add_access (&sym->attr, attr.access, sym->name, NULL)) |
6de9cd9a | 8827 | return MATCH_ERROR; |
c3f34952 TB |
8828 | else if (sym->attr.access == ACCESS_UNKNOWN |
8829 | && gensym->attr.access != ACCESS_UNKNOWN | |
70112e2a | 8830 | && !gfc_add_access (&sym->attr, gensym->attr.access, |
524af0d6 | 8831 | sym->name, NULL)) |
c3f34952 TB |
8832 | return MATCH_ERROR; |
8833 | ||
8834 | if (sym->attr.access != ACCESS_UNKNOWN | |
8835 | && gensym->attr.access == ACCESS_UNKNOWN) | |
8836 | gensym->attr.access = sym->attr.access; | |
6de9cd9a | 8837 | |
a8b3b0b6 CR |
8838 | /* See if the derived type was labeled as bind(c). */ |
8839 | if (attr.is_bind_c != 0) | |
8840 | sym->attr.is_bind_c = attr.is_bind_c; | |
8841 | ||
34523524 DK |
8842 | /* Construct the f2k_derived namespace if it is not yet there. */ |
8843 | if (!sym->f2k_derived) | |
8844 | sym->f2k_derived = gfc_get_namespace (NULL, 0); | |
f5acf0f2 | 8845 | |
7d1f1e61 PT |
8846 | if (extended && !sym->components) |
8847 | { | |
8848 | gfc_component *p; | |
7d1f1e61 PT |
8849 | |
8850 | /* Add the extended derived type as the first component. */ | |
8851 | gfc_add_component (sym, parent, &p); | |
7d1f1e61 PT |
8852 | extended->refs++; |
8853 | gfc_set_sym_referenced (extended); | |
8854 | ||
8855 | p->ts.type = BT_DERIVED; | |
bc21d315 | 8856 | p->ts.u.derived = extended; |
7d1f1e61 | 8857 | p->initializer = gfc_default_initializer (&p->ts); |
f5acf0f2 | 8858 | |
7c1dab0d JW |
8859 | /* Set extension level. */ |
8860 | if (extended->attr.extension == 255) | |
8861 | { | |
8862 | /* Since the extension field is 8 bit wide, we can only have | |
8863 | up to 255 extension levels. */ | |
c4100eae | 8864 | gfc_error ("Maximum extension level reached with type %qs at %L", |
7c1dab0d JW |
8865 | extended->name, &extended->declared_at); |
8866 | return MATCH_ERROR; | |
8867 | } | |
8868 | sym->attr.extension = extended->attr.extension + 1; | |
7d1f1e61 PT |
8869 | |
8870 | /* Provide the links between the extended type and its extension. */ | |
8871 | if (!extended->f2k_derived) | |
8872 | extended->f2k_derived = gfc_get_namespace (NULL, 0); | |
7d1f1e61 PT |
8873 | } |
8874 | ||
7c1dab0d JW |
8875 | if (!sym->hash_value) |
8876 | /* Set the hash for the compound name for this type. */ | |
4fa02692 | 8877 | sym->hash_value = gfc_hash_value (sym); |
cf2b3c22 | 8878 | |
52f49934 DK |
8879 | /* Take over the ABSTRACT attribute. */ |
8880 | sym->attr.abstract = attr.abstract; | |
8881 | ||
6de9cd9a DN |
8882 | gfc_new_block = sym; |
8883 | ||
8884 | return MATCH_YES; | |
8885 | } | |
83d890b9 AL |
8886 | |
8887 | ||
f5acf0f2 | 8888 | /* Cray Pointees can be declared as: |
b3aefde2 | 8889 | pointer (ipt, a (n,m,...,*)) */ |
83d890b9 | 8890 | |
32e8bb8e | 8891 | match |
83d890b9 AL |
8892 | gfc_mod_pointee_as (gfc_array_spec *as) |
8893 | { | |
8894 | as->cray_pointee = true; /* This will be useful to know later. */ | |
8895 | if (as->type == AS_ASSUMED_SIZE) | |
b3aefde2 | 8896 | as->cp_was_assumed = true; |
83d890b9 AL |
8897 | else if (as->type == AS_ASSUMED_SHAPE) |
8898 | { | |
8899 | gfc_error ("Cray Pointee at %C cannot be assumed shape array"); | |
8900 | return MATCH_ERROR; | |
8901 | } | |
8902 | return MATCH_YES; | |
8903 | } | |
25d8f0a2 TS |
8904 | |
8905 | ||
f5acf0f2 PT |
8906 | /* Match the enum definition statement, here we are trying to match |
8907 | the first line of enum definition statement. | |
25d8f0a2 TS |
8908 | Returns MATCH_YES if match is found. */ |
8909 | ||
8910 | match | |
8911 | gfc_match_enum (void) | |
8912 | { | |
8913 | match m; | |
f5acf0f2 | 8914 | |
25d8f0a2 TS |
8915 | m = gfc_match_eos (); |
8916 | if (m != MATCH_YES) | |
8917 | return m; | |
8918 | ||
524af0d6 | 8919 | if (!gfc_notify_std (GFC_STD_F2003, "ENUM and ENUMERATOR at %C")) |
25d8f0a2 TS |
8920 | return MATCH_ERROR; |
8921 | ||
8922 | return MATCH_YES; | |
8923 | } | |
8924 | ||
8925 | ||
31224396 SK |
8926 | /* Returns an initializer whose value is one higher than the value of the |
8927 | LAST_INITIALIZER argument. If the argument is NULL, the | |
8928 | initializers value will be set to zero. The initializer's kind | |
8929 | will be set to gfc_c_int_kind. | |
8930 | ||
8931 | If -fshort-enums is given, the appropriate kind will be selected | |
8932 | later after all enumerators have been parsed. A warning is issued | |
8933 | here if an initializer exceeds gfc_c_int_kind. */ | |
8934 | ||
8935 | static gfc_expr * | |
8936 | enum_initializer (gfc_expr *last_initializer, locus where) | |
8937 | { | |
8938 | gfc_expr *result; | |
b7e75771 | 8939 | result = gfc_get_constant_expr (BT_INTEGER, gfc_c_int_kind, &where); |
31224396 SK |
8940 | |
8941 | mpz_init (result->value.integer); | |
8942 | ||
8943 | if (last_initializer != NULL) | |
8944 | { | |
8945 | mpz_add_ui (result->value.integer, last_initializer->value.integer, 1); | |
8946 | result->where = last_initializer->where; | |
8947 | ||
8948 | if (gfc_check_integer_range (result->value.integer, | |
8949 | gfc_c_int_kind) != ARITH_OK) | |
8950 | { | |
8951 | gfc_error ("Enumerator exceeds the C integer type at %C"); | |
8952 | return NULL; | |
8953 | } | |
8954 | } | |
8955 | else | |
8956 | { | |
8957 | /* Control comes here, if it's the very first enumerator and no | |
8958 | initializer has been given. It will be initialized to zero. */ | |
8959 | mpz_set_si (result->value.integer, 0); | |
8960 | } | |
8961 | ||
8962 | return result; | |
8963 | } | |
8964 | ||
8965 | ||
6133c68a TS |
8966 | /* Match a variable name with an optional initializer. When this |
8967 | subroutine is called, a variable is expected to be parsed next. | |
8968 | Depending on what is happening at the moment, updates either the | |
8969 | symbol table or the current interface. */ | |
8970 | ||
8971 | static match | |
8972 | enumerator_decl (void) | |
8973 | { | |
8974 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8975 | gfc_expr *initializer; | |
8976 | gfc_array_spec *as = NULL; | |
8977 | gfc_symbol *sym; | |
8978 | locus var_locus; | |
8979 | match m; | |
524af0d6 | 8980 | bool t; |
6133c68a TS |
8981 | locus old_locus; |
8982 | ||
8983 | initializer = NULL; | |
8984 | old_locus = gfc_current_locus; | |
8985 | ||
8986 | /* When we get here, we've just matched a list of attributes and | |
8987 | maybe a type and a double colon. The next thing we expect to see | |
8988 | is the name of the symbol. */ | |
8989 | m = gfc_match_name (name); | |
8990 | if (m != MATCH_YES) | |
8991 | goto cleanup; | |
8992 | ||
8993 | var_locus = gfc_current_locus; | |
8994 | ||
8995 | /* OK, we've successfully matched the declaration. Now put the | |
8996 | symbol in the current namespace. If we fail to create the symbol, | |
8997 | bail out. */ | |
524af0d6 | 8998 | if (!build_sym (name, NULL, false, &as, &var_locus)) |
6133c68a TS |
8999 | { |
9000 | m = MATCH_ERROR; | |
9001 | goto cleanup; | |
9002 | } | |
9003 | ||
9004 | /* The double colon must be present in order to have initializers. | |
9005 | Otherwise the statement is ambiguous with an assignment statement. */ | |
9006 | if (colon_seen) | |
9007 | { | |
9008 | if (gfc_match_char ('=') == MATCH_YES) | |
9009 | { | |
9010 | m = gfc_match_init_expr (&initializer); | |
9011 | if (m == MATCH_NO) | |
9012 | { | |
9013 | gfc_error ("Expected an initialization expression at %C"); | |
9014 | m = MATCH_ERROR; | |
9015 | } | |
9016 | ||
9017 | if (m != MATCH_YES) | |
9018 | goto cleanup; | |
9019 | } | |
9020 | } | |
9021 | ||
9022 | /* If we do not have an initializer, the initialization value of the | |
9023 | previous enumerator (stored in last_initializer) is incremented | |
9024 | by 1 and is used to initialize the current enumerator. */ | |
9025 | if (initializer == NULL) | |
31224396 | 9026 | initializer = enum_initializer (last_initializer, old_locus); |
d51347f9 | 9027 | |
6133c68a TS |
9028 | if (initializer == NULL || initializer->ts.type != BT_INTEGER) |
9029 | { | |
01e64c3d JJ |
9030 | gfc_error ("ENUMERATOR %L not initialized with integer expression", |
9031 | &var_locus); | |
d51347f9 | 9032 | m = MATCH_ERROR; |
6133c68a TS |
9033 | goto cleanup; |
9034 | } | |
9035 | ||
9036 | /* Store this current initializer, for the next enumerator variable | |
9037 | to be parsed. add_init_expr_to_sym() zeros initializer, so we | |
9038 | use last_initializer below. */ | |
9039 | last_initializer = initializer; | |
9040 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
9041 | ||
9042 | /* Maintain enumerator history. */ | |
9043 | gfc_find_symbol (name, NULL, 0, &sym); | |
9044 | create_enum_history (sym, last_initializer); | |
9045 | ||
524af0d6 | 9046 | return (t) ? MATCH_YES : MATCH_ERROR; |
6133c68a TS |
9047 | |
9048 | cleanup: | |
9049 | /* Free stuff up and return. */ | |
9050 | gfc_free_expr (initializer); | |
9051 | ||
9052 | return m; | |
9053 | } | |
9054 | ||
9055 | ||
66e4ab31 | 9056 | /* Match the enumerator definition statement. */ |
25d8f0a2 TS |
9057 | |
9058 | match | |
9059 | gfc_match_enumerator_def (void) | |
9060 | { | |
9061 | match m; | |
524af0d6 | 9062 | bool t; |
d51347f9 | 9063 | |
25d8f0a2 | 9064 | gfc_clear_ts (¤t_ts); |
d51347f9 | 9065 | |
25d8f0a2 TS |
9066 | m = gfc_match (" enumerator"); |
9067 | if (m != MATCH_YES) | |
9068 | return m; | |
6133c68a TS |
9069 | |
9070 | m = gfc_match (" :: "); | |
9071 | if (m == MATCH_ERROR) | |
9072 | return m; | |
9073 | ||
9074 | colon_seen = (m == MATCH_YES); | |
d51347f9 | 9075 | |
25d8f0a2 TS |
9076 | if (gfc_current_state () != COMP_ENUM) |
9077 | { | |
9078 | gfc_error ("ENUM definition statement expected before %C"); | |
9079 | gfc_free_enum_history (); | |
9080 | return MATCH_ERROR; | |
9081 | } | |
9082 | ||
9083 | (¤t_ts)->type = BT_INTEGER; | |
9084 | (¤t_ts)->kind = gfc_c_int_kind; | |
d51347f9 | 9085 | |
6133c68a TS |
9086 | gfc_clear_attr (¤t_attr); |
9087 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, NULL); | |
524af0d6 | 9088 | if (!t) |
25d8f0a2 | 9089 | { |
6133c68a | 9090 | m = MATCH_ERROR; |
25d8f0a2 TS |
9091 | goto cleanup; |
9092 | } | |
9093 | ||
25d8f0a2 TS |
9094 | for (;;) |
9095 | { | |
6133c68a | 9096 | m = enumerator_decl (); |
25d8f0a2 | 9097 | if (m == MATCH_ERROR) |
01e64c3d JJ |
9098 | { |
9099 | gfc_free_enum_history (); | |
9100 | goto cleanup; | |
9101 | } | |
25d8f0a2 TS |
9102 | if (m == MATCH_NO) |
9103 | break; | |
9104 | ||
9105 | if (gfc_match_eos () == MATCH_YES) | |
9106 | goto cleanup; | |
9107 | if (gfc_match_char (',') != MATCH_YES) | |
9108 | break; | |
9109 | } | |
9110 | ||
9111 | if (gfc_current_state () == COMP_ENUM) | |
9112 | { | |
9113 | gfc_free_enum_history (); | |
9114 | gfc_error ("Syntax error in ENUMERATOR definition at %C"); | |
9115 | m = MATCH_ERROR; | |
9116 | } | |
9117 | ||
9118 | cleanup: | |
9119 | gfc_free_array_spec (current_as); | |
9120 | current_as = NULL; | |
9121 | return m; | |
9122 | ||
9123 | } | |
9124 | ||
f6fad28e | 9125 | |
30b608eb DK |
9126 | /* Match binding attributes. */ |
9127 | ||
9128 | static match | |
713485cc | 9129 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc) |
30b608eb DK |
9130 | { |
9131 | bool found_passing = false; | |
713485cc | 9132 | bool seen_ptr = false; |
90661f26 | 9133 | match m = MATCH_YES; |
30b608eb | 9134 | |
eea58adb | 9135 | /* Initialize to defaults. Do so even before the MATCH_NO check so that in |
30b608eb DK |
9136 | this case the defaults are in there. */ |
9137 | ba->access = ACCESS_UNKNOWN; | |
9138 | ba->pass_arg = NULL; | |
9139 | ba->pass_arg_num = 0; | |
9140 | ba->nopass = 0; | |
9141 | ba->non_overridable = 0; | |
b0e5fa94 | 9142 | ba->deferred = 0; |
90661f26 | 9143 | ba->ppc = ppc; |
30b608eb DK |
9144 | |
9145 | /* If we find a comma, we believe there are binding attributes. */ | |
90661f26 JW |
9146 | m = gfc_match_char (','); |
9147 | if (m == MATCH_NO) | |
9148 | goto done; | |
30b608eb DK |
9149 | |
9150 | do | |
9151 | { | |
e157f736 DK |
9152 | /* Access specifier. */ |
9153 | ||
9154 | m = gfc_match (" public"); | |
30b608eb DK |
9155 | if (m == MATCH_ERROR) |
9156 | goto error; | |
9157 | if (m == MATCH_YES) | |
9158 | { | |
e157f736 | 9159 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 9160 | { |
e157f736 | 9161 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
9162 | goto error; |
9163 | } | |
9164 | ||
e157f736 | 9165 | ba->access = ACCESS_PUBLIC; |
30b608eb DK |
9166 | continue; |
9167 | } | |
9168 | ||
e157f736 | 9169 | m = gfc_match (" private"); |
30b608eb DK |
9170 | if (m == MATCH_ERROR) |
9171 | goto error; | |
9172 | if (m == MATCH_YES) | |
9173 | { | |
e157f736 | 9174 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 9175 | { |
e157f736 | 9176 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
9177 | goto error; |
9178 | } | |
9179 | ||
e157f736 | 9180 | ba->access = ACCESS_PRIVATE; |
30b608eb DK |
9181 | continue; |
9182 | } | |
9183 | ||
e157f736 DK |
9184 | /* If inside GENERIC, the following is not allowed. */ |
9185 | if (!generic) | |
30b608eb | 9186 | { |
30b608eb | 9187 | |
e157f736 DK |
9188 | /* NOPASS flag. */ |
9189 | m = gfc_match (" nopass"); | |
9190 | if (m == MATCH_ERROR) | |
9191 | goto error; | |
9192 | if (m == MATCH_YES) | |
30b608eb | 9193 | { |
e157f736 DK |
9194 | if (found_passing) |
9195 | { | |
9196 | gfc_error ("Binding attributes already specify passing," | |
9197 | " illegal NOPASS at %C"); | |
9198 | goto error; | |
9199 | } | |
9200 | ||
9201 | found_passing = true; | |
9202 | ba->nopass = 1; | |
9203 | continue; | |
30b608eb DK |
9204 | } |
9205 | ||
e157f736 DK |
9206 | /* PASS possibly including argument. */ |
9207 | m = gfc_match (" pass"); | |
9208 | if (m == MATCH_ERROR) | |
9209 | goto error; | |
9210 | if (m == MATCH_YES) | |
30b608eb | 9211 | { |
e157f736 DK |
9212 | char arg[GFC_MAX_SYMBOL_LEN + 1]; |
9213 | ||
9214 | if (found_passing) | |
9215 | { | |
9216 | gfc_error ("Binding attributes already specify passing," | |
9217 | " illegal PASS at %C"); | |
9218 | goto error; | |
9219 | } | |
9220 | ||
9221 | m = gfc_match (" ( %n )", arg); | |
9222 | if (m == MATCH_ERROR) | |
9223 | goto error; | |
9224 | if (m == MATCH_YES) | |
90661f26 | 9225 | ba->pass_arg = gfc_get_string (arg); |
e157f736 DK |
9226 | gcc_assert ((m == MATCH_YES) == (ba->pass_arg != NULL)); |
9227 | ||
9228 | found_passing = true; | |
9229 | ba->nopass = 0; | |
9230 | continue; | |
30b608eb DK |
9231 | } |
9232 | ||
713485cc JW |
9233 | if (ppc) |
9234 | { | |
9235 | /* POINTER flag. */ | |
9236 | m = gfc_match (" pointer"); | |
9237 | if (m == MATCH_ERROR) | |
9238 | goto error; | |
9239 | if (m == MATCH_YES) | |
9240 | { | |
9241 | if (seen_ptr) | |
9242 | { | |
9243 | gfc_error ("Duplicate POINTER attribute at %C"); | |
9244 | goto error; | |
9245 | } | |
9246 | ||
9247 | seen_ptr = true; | |
713485cc JW |
9248 | continue; |
9249 | } | |
9250 | } | |
9251 | else | |
9252 | { | |
9253 | /* NON_OVERRIDABLE flag. */ | |
9254 | m = gfc_match (" non_overridable"); | |
9255 | if (m == MATCH_ERROR) | |
9256 | goto error; | |
9257 | if (m == MATCH_YES) | |
9258 | { | |
9259 | if (ba->non_overridable) | |
9260 | { | |
9261 | gfc_error ("Duplicate NON_OVERRIDABLE at %C"); | |
9262 | goto error; | |
9263 | } | |
9264 | ||
9265 | ba->non_overridable = 1; | |
9266 | continue; | |
9267 | } | |
9268 | ||
9269 | /* DEFERRED flag. */ | |
9270 | m = gfc_match (" deferred"); | |
9271 | if (m == MATCH_ERROR) | |
9272 | goto error; | |
9273 | if (m == MATCH_YES) | |
9274 | { | |
9275 | if (ba->deferred) | |
9276 | { | |
9277 | gfc_error ("Duplicate DEFERRED at %C"); | |
9278 | goto error; | |
9279 | } | |
9280 | ||
9281 | ba->deferred = 1; | |
9282 | continue; | |
9283 | } | |
9284 | } | |
9285 | ||
30b608eb DK |
9286 | } |
9287 | ||
9288 | /* Nothing matching found. */ | |
e157f736 DK |
9289 | if (generic) |
9290 | gfc_error ("Expected access-specifier at %C"); | |
9291 | else | |
9292 | gfc_error ("Expected binding attribute at %C"); | |
30b608eb DK |
9293 | goto error; |
9294 | } | |
9295 | while (gfc_match_char (',') == MATCH_YES); | |
9296 | ||
b0e5fa94 DK |
9297 | /* NON_OVERRIDABLE and DEFERRED exclude themselves. */ |
9298 | if (ba->non_overridable && ba->deferred) | |
9299 | { | |
9300 | gfc_error ("NON_OVERRIDABLE and DEFERRED can't both appear at %C"); | |
9301 | goto error; | |
9302 | } | |
9303 | ||
90661f26 JW |
9304 | m = MATCH_YES; |
9305 | ||
9306 | done: | |
e157f736 DK |
9307 | if (ba->access == ACCESS_UNKNOWN) |
9308 | ba->access = gfc_typebound_default_access; | |
9309 | ||
713485cc JW |
9310 | if (ppc && !seen_ptr) |
9311 | { | |
9312 | gfc_error ("POINTER attribute is required for procedure pointer component" | |
9313 | " at %C"); | |
9314 | goto error; | |
9315 | } | |
9316 | ||
90661f26 | 9317 | return m; |
30b608eb DK |
9318 | |
9319 | error: | |
30b608eb DK |
9320 | return MATCH_ERROR; |
9321 | } | |
9322 | ||
9323 | ||
9324 | /* Match a PROCEDURE specific binding inside a derived type. */ | |
9325 | ||
9326 | static match | |
9327 | match_procedure_in_type (void) | |
9328 | { | |
9329 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9330 | char target_buf[GFC_MAX_SYMBOL_LEN + 1]; | |
1be17993 | 9331 | char* target = NULL, *ifc = NULL; |
3e15518b | 9332 | gfc_typebound_proc tb; |
30b608eb DK |
9333 | bool seen_colons; |
9334 | bool seen_attrs; | |
9335 | match m; | |
9336 | gfc_symtree* stree; | |
9337 | gfc_namespace* ns; | |
9338 | gfc_symbol* block; | |
1be17993 | 9339 | int num; |
30b608eb DK |
9340 | |
9341 | /* Check current state. */ | |
9342 | gcc_assert (gfc_state_stack->state == COMP_DERIVED_CONTAINS); | |
9343 | block = gfc_state_stack->previous->sym; | |
9344 | gcc_assert (block); | |
9345 | ||
b0e5fa94 | 9346 | /* Try to match PROCEDURE(interface). */ |
30b608eb DK |
9347 | if (gfc_match (" (") == MATCH_YES) |
9348 | { | |
b0e5fa94 DK |
9349 | m = gfc_match_name (target_buf); |
9350 | if (m == MATCH_ERROR) | |
9351 | return m; | |
9352 | if (m != MATCH_YES) | |
9353 | { | |
a4d9b221 | 9354 | gfc_error ("Interface-name expected after %<(%> at %C"); |
b0e5fa94 DK |
9355 | return MATCH_ERROR; |
9356 | } | |
9357 | ||
9358 | if (gfc_match (" )") != MATCH_YES) | |
9359 | { | |
a4d9b221 | 9360 | gfc_error ("%<)%> expected at %C"); |
b0e5fa94 DK |
9361 | return MATCH_ERROR; |
9362 | } | |
9363 | ||
1be17993 | 9364 | ifc = target_buf; |
30b608eb DK |
9365 | } |
9366 | ||
9367 | /* Construct the data structure. */ | |
ff5b6492 | 9368 | memset (&tb, 0, sizeof (tb)); |
3e15518b | 9369 | tb.where = gfc_current_locus; |
30b608eb DK |
9370 | |
9371 | /* Match binding attributes. */ | |
3e15518b | 9372 | m = match_binding_attributes (&tb, false, false); |
30b608eb DK |
9373 | if (m == MATCH_ERROR) |
9374 | return m; | |
9375 | seen_attrs = (m == MATCH_YES); | |
9376 | ||
1be17993 | 9377 | /* Check that attribute DEFERRED is given if an interface is specified. */ |
3e15518b | 9378 | if (tb.deferred && !ifc) |
b0e5fa94 DK |
9379 | { |
9380 | gfc_error ("Interface must be specified for DEFERRED binding at %C"); | |
9381 | return MATCH_ERROR; | |
9382 | } | |
3e15518b | 9383 | if (ifc && !tb.deferred) |
b0e5fa94 DK |
9384 | { |
9385 | gfc_error ("PROCEDURE(interface) at %C should be declared DEFERRED"); | |
9386 | return MATCH_ERROR; | |
9387 | } | |
9388 | ||
30b608eb DK |
9389 | /* Match the colons. */ |
9390 | m = gfc_match (" ::"); | |
9391 | if (m == MATCH_ERROR) | |
9392 | return m; | |
9393 | seen_colons = (m == MATCH_YES); | |
9394 | if (seen_attrs && !seen_colons) | |
9395 | { | |
a4d9b221 | 9396 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
30b608eb DK |
9397 | return MATCH_ERROR; |
9398 | } | |
9399 | ||
f5acf0f2 | 9400 | /* Match the binding names. */ |
1be17993 | 9401 | for(num=1;;num++) |
30b608eb | 9402 | { |
1be17993 JW |
9403 | m = gfc_match_name (name); |
9404 | if (m == MATCH_ERROR) | |
9405 | return m; | |
9406 | if (m == MATCH_NO) | |
b0e5fa94 | 9407 | { |
1be17993 | 9408 | gfc_error ("Expected binding name at %C"); |
b0e5fa94 DK |
9409 | return MATCH_ERROR; |
9410 | } | |
9411 | ||
524af0d6 | 9412 | if (num>1 && !gfc_notify_std (GFC_STD_F2008, "PROCEDURE list at %C")) |
1be17993 | 9413 | return MATCH_ERROR; |
30b608eb | 9414 | |
1be17993 JW |
9415 | /* Try to match the '=> target', if it's there. */ |
9416 | target = ifc; | |
9417 | m = gfc_match (" =>"); | |
30b608eb DK |
9418 | if (m == MATCH_ERROR) |
9419 | return m; | |
1be17993 | 9420 | if (m == MATCH_YES) |
30b608eb | 9421 | { |
3e15518b | 9422 | if (tb.deferred) |
1be17993 | 9423 | { |
a4d9b221 | 9424 | gfc_error ("%<=> target%> is invalid for DEFERRED binding at %C"); |
1be17993 JW |
9425 | return MATCH_ERROR; |
9426 | } | |
9427 | ||
9428 | if (!seen_colons) | |
9429 | { | |
a4d9b221 | 9430 | gfc_error ("%<::%> needed in PROCEDURE binding with explicit target" |
1be17993 JW |
9431 | " at %C"); |
9432 | return MATCH_ERROR; | |
9433 | } | |
9434 | ||
9435 | m = gfc_match_name (target_buf); | |
9436 | if (m == MATCH_ERROR) | |
9437 | return m; | |
9438 | if (m == MATCH_NO) | |
9439 | { | |
a4d9b221 | 9440 | gfc_error ("Expected binding target after %<=>%> at %C"); |
1be17993 JW |
9441 | return MATCH_ERROR; |
9442 | } | |
9443 | target = target_buf; | |
30b608eb | 9444 | } |
30b608eb | 9445 | |
1be17993 JW |
9446 | /* If no target was found, it has the same name as the binding. */ |
9447 | if (!target) | |
9448 | target = name; | |
30b608eb | 9449 | |
1be17993 JW |
9450 | /* Get the namespace to insert the symbols into. */ |
9451 | ns = block->f2k_derived; | |
9452 | gcc_assert (ns); | |
30b608eb | 9453 | |
1be17993 | 9454 | /* If the binding is DEFERRED, check that the containing type is ABSTRACT. */ |
3e15518b | 9455 | if (tb.deferred && !block->attr.abstract) |
1be17993 | 9456 | { |
c4100eae | 9457 | gfc_error ("Type %qs containing DEFERRED binding at %C " |
1be17993 JW |
9458 | "is not ABSTRACT", block->name); |
9459 | return MATCH_ERROR; | |
9460 | } | |
30b608eb | 9461 | |
1be17993 | 9462 | /* See if we already have a binding with this name in the symtree which |
6bd2c800 | 9463 | would be an error. If a GENERIC already targeted this binding, it may |
1be17993 JW |
9464 | be already there but then typebound is still NULL. */ |
9465 | stree = gfc_find_symtree (ns->tb_sym_root, name); | |
9f23af48 | 9466 | if (stree && stree->n.tb) |
1be17993 | 9467 | { |
c4100eae MLI |
9468 | gfc_error ("There is already a procedure with binding name %qs for " |
9469 | "the derived type %qs at %C", name, block->name); | |
1be17993 JW |
9470 | return MATCH_ERROR; |
9471 | } | |
b0e5fa94 | 9472 | |
1be17993 | 9473 | /* Insert it and set attributes. */ |
30b608eb | 9474 | |
9f23af48 MM |
9475 | if (!stree) |
9476 | { | |
9477 | stree = gfc_new_symtree (&ns->tb_sym_root, name); | |
9478 | gcc_assert (stree); | |
9479 | } | |
3e15518b | 9480 | stree->n.tb = gfc_get_typebound_proc (&tb); |
e34ccb4c | 9481 | |
3e15518b JW |
9482 | if (gfc_get_sym_tree (target, gfc_current_ns, &stree->n.tb->u.specific, |
9483 | false)) | |
1be17993 | 9484 | return MATCH_ERROR; |
3e15518b | 9485 | gfc_set_sym_referenced (stree->n.tb->u.specific->n.sym); |
f5acf0f2 | 9486 | |
1be17993 JW |
9487 | if (gfc_match_eos () == MATCH_YES) |
9488 | return MATCH_YES; | |
9489 | if (gfc_match_char (',') != MATCH_YES) | |
9490 | goto syntax; | |
e34ccb4c | 9491 | } |
30b608eb | 9492 | |
1be17993 JW |
9493 | syntax: |
9494 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
9495 | return MATCH_ERROR; | |
30b608eb DK |
9496 | } |
9497 | ||
9498 | ||
e157f736 DK |
9499 | /* Match a GENERIC procedure binding inside a derived type. */ |
9500 | ||
9501 | match | |
9502 | gfc_match_generic (void) | |
9503 | { | |
9504 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
94747289 | 9505 | char bind_name[GFC_MAX_SYMBOL_LEN + 16]; /* Allow space for OPERATOR(...). */ |
e157f736 DK |
9506 | gfc_symbol* block; |
9507 | gfc_typebound_proc tbattr; /* Used for match_binding_attributes. */ | |
9508 | gfc_typebound_proc* tb; | |
e157f736 | 9509 | gfc_namespace* ns; |
94747289 DK |
9510 | interface_type op_type; |
9511 | gfc_intrinsic_op op; | |
e157f736 DK |
9512 | match m; |
9513 | ||
9514 | /* Check current state. */ | |
9515 | if (gfc_current_state () == COMP_DERIVED) | |
9516 | { | |
9517 | gfc_error ("GENERIC at %C must be inside a derived-type CONTAINS"); | |
9518 | return MATCH_ERROR; | |
9519 | } | |
9520 | if (gfc_current_state () != COMP_DERIVED_CONTAINS) | |
9521 | return MATCH_NO; | |
9522 | block = gfc_state_stack->previous->sym; | |
9523 | ns = block->f2k_derived; | |
9524 | gcc_assert (block && ns); | |
9525 | ||
ff5b6492 MM |
9526 | memset (&tbattr, 0, sizeof (tbattr)); |
9527 | tbattr.where = gfc_current_locus; | |
9528 | ||
e157f736 | 9529 | /* See if we get an access-specifier. */ |
713485cc | 9530 | m = match_binding_attributes (&tbattr, true, false); |
e157f736 DK |
9531 | if (m == MATCH_ERROR) |
9532 | goto error; | |
9533 | ||
9534 | /* Now the colons, those are required. */ | |
9535 | if (gfc_match (" ::") != MATCH_YES) | |
9536 | { | |
a4d9b221 | 9537 | gfc_error ("Expected %<::%> at %C"); |
e157f736 DK |
9538 | goto error; |
9539 | } | |
9540 | ||
94747289 DK |
9541 | /* Match the binding name; depending on type (operator / generic) format |
9542 | it for future error messages into bind_name. */ | |
f5acf0f2 | 9543 | |
94747289 | 9544 | m = gfc_match_generic_spec (&op_type, name, &op); |
e157f736 DK |
9545 | if (m == MATCH_ERROR) |
9546 | return MATCH_ERROR; | |
9547 | if (m == MATCH_NO) | |
9548 | { | |
94747289 | 9549 | gfc_error ("Expected generic name or operator descriptor at %C"); |
e157f736 DK |
9550 | goto error; |
9551 | } | |
9552 | ||
94747289 | 9553 | switch (op_type) |
e157f736 | 9554 | { |
94747289 | 9555 | case INTERFACE_GENERIC: |
e73d3ca6 | 9556 | case INTERFACE_DTIO: |
94747289 DK |
9557 | snprintf (bind_name, sizeof (bind_name), "%s", name); |
9558 | break; | |
f5acf0f2 | 9559 | |
94747289 DK |
9560 | case INTERFACE_USER_OP: |
9561 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(.%s.)", name); | |
9562 | break; | |
f5acf0f2 | 9563 | |
94747289 DK |
9564 | case INTERFACE_INTRINSIC_OP: |
9565 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(%s)", | |
9566 | gfc_op2string (op)); | |
9567 | break; | |
9568 | ||
377e37c1 SK |
9569 | case INTERFACE_NAMELESS: |
9570 | gfc_error ("Malformed GENERIC statement at %C"); | |
9571 | goto error; | |
9572 | break; | |
9573 | ||
94747289 DK |
9574 | default: |
9575 | gcc_unreachable (); | |
9576 | } | |
e34ccb4c | 9577 | |
94747289 DK |
9578 | /* Match the required =>. */ |
9579 | if (gfc_match (" =>") != MATCH_YES) | |
9580 | { | |
a4d9b221 | 9581 | gfc_error ("Expected %<=>%> at %C"); |
94747289 DK |
9582 | goto error; |
9583 | } | |
f5acf0f2 | 9584 | |
94747289 DK |
9585 | /* Try to find existing GENERIC binding with this name / for this operator; |
9586 | if there is something, check that it is another GENERIC and then extend | |
9587 | it rather than building a new node. Otherwise, create it and put it | |
9588 | at the right position. */ | |
9589 | ||
9590 | switch (op_type) | |
9591 | { | |
e73d3ca6 | 9592 | case INTERFACE_DTIO: |
94747289 DK |
9593 | case INTERFACE_USER_OP: |
9594 | case INTERFACE_GENERIC: | |
9595 | { | |
9596 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
9597 | gfc_symtree* st; | |
9598 | ||
9599 | st = gfc_find_symtree (is_op ? ns->tb_uop_root : ns->tb_sym_root, name); | |
9600 | if (st) | |
9601 | { | |
9602 | tb = st->n.tb; | |
9603 | gcc_assert (tb); | |
9604 | } | |
9605 | else | |
9606 | tb = NULL; | |
9607 | ||
9608 | break; | |
9609 | } | |
9610 | ||
9611 | case INTERFACE_INTRINSIC_OP: | |
9612 | tb = ns->tb_op[op]; | |
9613 | break; | |
9614 | ||
9615 | default: | |
9616 | gcc_unreachable (); | |
9617 | } | |
9618 | ||
9619 | if (tb) | |
9620 | { | |
e34ccb4c | 9621 | if (!tb->is_generic) |
e157f736 | 9622 | { |
94747289 | 9623 | gcc_assert (op_type == INTERFACE_GENERIC); |
e157f736 | 9624 | gfc_error ("There's already a non-generic procedure with binding name" |
c4100eae | 9625 | " %qs for the derived type %qs at %C", |
94747289 | 9626 | bind_name, block->name); |
e157f736 DK |
9627 | goto error; |
9628 | } | |
9629 | ||
e157f736 DK |
9630 | if (tb->access != tbattr.access) |
9631 | { | |
9632 | gfc_error ("Binding at %C must have the same access as already" | |
c4100eae | 9633 | " defined binding %qs", bind_name); |
e157f736 DK |
9634 | goto error; |
9635 | } | |
9636 | } | |
9637 | else | |
9638 | { | |
3e15518b | 9639 | tb = gfc_get_typebound_proc (NULL); |
e157f736 DK |
9640 | tb->where = gfc_current_locus; |
9641 | tb->access = tbattr.access; | |
9642 | tb->is_generic = 1; | |
9643 | tb->u.generic = NULL; | |
94747289 DK |
9644 | |
9645 | switch (op_type) | |
9646 | { | |
e73d3ca6 | 9647 | case INTERFACE_DTIO: |
94747289 DK |
9648 | case INTERFACE_GENERIC: |
9649 | case INTERFACE_USER_OP: | |
9650 | { | |
9651 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
9652 | gfc_symtree* st; | |
9653 | ||
9654 | st = gfc_new_symtree (is_op ? &ns->tb_uop_root : &ns->tb_sym_root, | |
9655 | name); | |
9656 | gcc_assert (st); | |
9657 | st->n.tb = tb; | |
9658 | ||
9659 | break; | |
9660 | } | |
f5acf0f2 | 9661 | |
94747289 DK |
9662 | case INTERFACE_INTRINSIC_OP: |
9663 | ns->tb_op[op] = tb; | |
9664 | break; | |
9665 | ||
9666 | default: | |
9667 | gcc_unreachable (); | |
9668 | } | |
e157f736 DK |
9669 | } |
9670 | ||
9671 | /* Now, match all following names as specific targets. */ | |
9672 | do | |
9673 | { | |
9674 | gfc_symtree* target_st; | |
9675 | gfc_tbp_generic* target; | |
9676 | ||
9677 | m = gfc_match_name (name); | |
9678 | if (m == MATCH_ERROR) | |
9679 | goto error; | |
9680 | if (m == MATCH_NO) | |
9681 | { | |
9682 | gfc_error ("Expected specific binding name at %C"); | |
9683 | goto error; | |
9684 | } | |
9685 | ||
e34ccb4c | 9686 | target_st = gfc_get_tbp_symtree (&ns->tb_sym_root, name); |
e157f736 DK |
9687 | |
9688 | /* See if this is a duplicate specification. */ | |
9689 | for (target = tb->u.generic; target; target = target->next) | |
9690 | if (target_st == target->specific_st) | |
9691 | { | |
c4100eae MLI |
9692 | gfc_error ("%qs already defined as specific binding for the" |
9693 | " generic %qs at %C", name, bind_name); | |
e157f736 DK |
9694 | goto error; |
9695 | } | |
9696 | ||
e157f736 DK |
9697 | target = gfc_get_tbp_generic (); |
9698 | target->specific_st = target_st; | |
9699 | target->specific = NULL; | |
9700 | target->next = tb->u.generic; | |
218e1228 TB |
9701 | target->is_operator = ((op_type == INTERFACE_USER_OP) |
9702 | || (op_type == INTERFACE_INTRINSIC_OP)); | |
e157f736 DK |
9703 | tb->u.generic = target; |
9704 | } | |
9705 | while (gfc_match (" ,") == MATCH_YES); | |
9706 | ||
9707 | /* Here should be the end. */ | |
9708 | if (gfc_match_eos () != MATCH_YES) | |
9709 | { | |
9710 | gfc_error ("Junk after GENERIC binding at %C"); | |
9711 | goto error; | |
9712 | } | |
9713 | ||
9714 | return MATCH_YES; | |
9715 | ||
9716 | error: | |
9717 | return MATCH_ERROR; | |
9718 | } | |
9719 | ||
9720 | ||
34523524 DK |
9721 | /* Match a FINAL declaration inside a derived type. */ |
9722 | ||
9723 | match | |
9724 | gfc_match_final_decl (void) | |
9725 | { | |
9726 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9727 | gfc_symbol* sym; | |
9728 | match m; | |
9729 | gfc_namespace* module_ns; | |
9730 | bool first, last; | |
30b608eb | 9731 | gfc_symbol* block; |
34523524 | 9732 | |
33344e0f JW |
9733 | if (gfc_current_form == FORM_FREE) |
9734 | { | |
9735 | char c = gfc_peek_ascii_char (); | |
9736 | if (!gfc_is_whitespace (c) && c != ':') | |
9737 | return MATCH_NO; | |
9738 | } | |
f5acf0f2 | 9739 | |
30b608eb | 9740 | if (gfc_state_stack->state != COMP_DERIVED_CONTAINS) |
34523524 | 9741 | { |
33344e0f JW |
9742 | if (gfc_current_form == FORM_FIXED) |
9743 | return MATCH_NO; | |
9744 | ||
34523524 | 9745 | gfc_error ("FINAL declaration at %C must be inside a derived type " |
30b608eb | 9746 | "CONTAINS section"); |
34523524 DK |
9747 | return MATCH_ERROR; |
9748 | } | |
9749 | ||
30b608eb DK |
9750 | block = gfc_state_stack->previous->sym; |
9751 | gcc_assert (block); | |
34523524 | 9752 | |
30b608eb DK |
9753 | if (!gfc_state_stack->previous || !gfc_state_stack->previous->previous |
9754 | || gfc_state_stack->previous->previous->state != COMP_MODULE) | |
34523524 DK |
9755 | { |
9756 | gfc_error ("Derived type declaration with FINAL at %C must be in the" | |
9757 | " specification part of a MODULE"); | |
9758 | return MATCH_ERROR; | |
9759 | } | |
9760 | ||
9761 | module_ns = gfc_current_ns; | |
9762 | gcc_assert (module_ns); | |
9763 | gcc_assert (module_ns->proc_name->attr.flavor == FL_MODULE); | |
9764 | ||
9765 | /* Match optional ::, don't care about MATCH_YES or MATCH_NO. */ | |
9766 | if (gfc_match (" ::") == MATCH_ERROR) | |
9767 | return MATCH_ERROR; | |
9768 | ||
9769 | /* Match the sequence of procedure names. */ | |
9770 | first = true; | |
9771 | last = false; | |
9772 | do | |
9773 | { | |
9774 | gfc_finalizer* f; | |
9775 | ||
9776 | if (first && gfc_match_eos () == MATCH_YES) | |
9777 | { | |
9778 | gfc_error ("Empty FINAL at %C"); | |
9779 | return MATCH_ERROR; | |
9780 | } | |
9781 | ||
9782 | m = gfc_match_name (name); | |
9783 | if (m == MATCH_NO) | |
9784 | { | |
9785 | gfc_error ("Expected module procedure name at %C"); | |
9786 | return MATCH_ERROR; | |
9787 | } | |
9788 | else if (m != MATCH_YES) | |
9789 | return MATCH_ERROR; | |
9790 | ||
9791 | if (gfc_match_eos () == MATCH_YES) | |
9792 | last = true; | |
9793 | if (!last && gfc_match_char (',') != MATCH_YES) | |
9794 | { | |
a4d9b221 | 9795 | gfc_error ("Expected %<,%> at %C"); |
34523524 DK |
9796 | return MATCH_ERROR; |
9797 | } | |
9798 | ||
9799 | if (gfc_get_symbol (name, module_ns, &sym)) | |
9800 | { | |
c4100eae | 9801 | gfc_error ("Unknown procedure name %qs at %C", name); |
34523524 DK |
9802 | return MATCH_ERROR; |
9803 | } | |
9804 | ||
9805 | /* Mark the symbol as module procedure. */ | |
9806 | if (sym->attr.proc != PROC_MODULE | |
524af0d6 | 9807 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
34523524 DK |
9808 | return MATCH_ERROR; |
9809 | ||
9810 | /* Check if we already have this symbol in the list, this is an error. */ | |
30b608eb | 9811 | for (f = block->f2k_derived->finalizers; f; f = f->next) |
f6fad28e | 9812 | if (f->proc_sym == sym) |
34523524 | 9813 | { |
c4100eae | 9814 | gfc_error ("%qs at %C is already defined as FINAL procedure!", |
34523524 DK |
9815 | name); |
9816 | return MATCH_ERROR; | |
9817 | } | |
9818 | ||
9819 | /* Add this symbol to the list of finalizers. */ | |
30b608eb | 9820 | gcc_assert (block->f2k_derived); |
2050626a | 9821 | sym->refs++; |
ece3f663 | 9822 | f = XCNEW (gfc_finalizer); |
f6fad28e DK |
9823 | f->proc_sym = sym; |
9824 | f->proc_tree = NULL; | |
34523524 | 9825 | f->where = gfc_current_locus; |
30b608eb DK |
9826 | f->next = block->f2k_derived->finalizers; |
9827 | block->f2k_derived->finalizers = f; | |
34523524 DK |
9828 | |
9829 | first = false; | |
9830 | } | |
9831 | while (!last); | |
9832 | ||
9833 | return MATCH_YES; | |
9834 | } | |
08a6b8e0 TB |
9835 | |
9836 | ||
9837 | const ext_attr_t ext_attr_list[] = { | |
e7ac6a7c TB |
9838 | { "dllimport", EXT_ATTR_DLLIMPORT, "dllimport" }, |
9839 | { "dllexport", EXT_ATTR_DLLEXPORT, "dllexport" }, | |
9840 | { "cdecl", EXT_ATTR_CDECL, "cdecl" }, | |
9841 | { "stdcall", EXT_ATTR_STDCALL, "stdcall" }, | |
9842 | { "fastcall", EXT_ATTR_FASTCALL, "fastcall" }, | |
9843 | { "no_arg_check", EXT_ATTR_NO_ARG_CHECK, NULL }, | |
9844 | { NULL, EXT_ATTR_LAST, NULL } | |
08a6b8e0 TB |
9845 | }; |
9846 | ||
9847 | /* Match a !GCC$ ATTRIBUTES statement of the form: | |
9848 | !GCC$ ATTRIBUTES attribute-list :: var-name [, var-name] ... | |
9849 | When we come here, we have already matched the !GCC$ ATTRIBUTES string. | |
9850 | ||
9851 | TODO: We should support all GCC attributes using the same syntax for | |
9852 | the attribute list, i.e. the list in C | |
9853 | __attributes(( attribute-list )) | |
9854 | matches then | |
9855 | !GCC$ ATTRIBUTES attribute-list :: | |
9856 | Cf. c-parser.c's c_parser_attributes; the data can then directly be | |
9857 | saved into a TREE. | |
9858 | ||
9859 | As there is absolutely no risk of confusion, we should never return | |
9860 | MATCH_NO. */ | |
9861 | match | |
9862 | gfc_match_gcc_attributes (void) | |
f5acf0f2 | 9863 | { |
08a6b8e0 TB |
9864 | symbol_attribute attr; |
9865 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9866 | unsigned id; | |
9867 | gfc_symbol *sym; | |
9868 | match m; | |
9869 | ||
9870 | gfc_clear_attr (&attr); | |
9871 | for(;;) | |
9872 | { | |
9873 | char ch; | |
9874 | ||
9875 | if (gfc_match_name (name) != MATCH_YES) | |
9876 | return MATCH_ERROR; | |
9877 | ||
9878 | for (id = 0; id < EXT_ATTR_LAST; id++) | |
9879 | if (strcmp (name, ext_attr_list[id].name) == 0) | |
9880 | break; | |
9881 | ||
9882 | if (id == EXT_ATTR_LAST) | |
9883 | { | |
9884 | gfc_error ("Unknown attribute in !GCC$ ATTRIBUTES statement at %C"); | |
9885 | return MATCH_ERROR; | |
9886 | } | |
9887 | ||
524af0d6 | 9888 | if (!gfc_add_ext_attribute (&attr, (ext_attr_id_t)id, &gfc_current_locus)) |
08a6b8e0 TB |
9889 | return MATCH_ERROR; |
9890 | ||
9891 | gfc_gobble_whitespace (); | |
9892 | ch = gfc_next_ascii_char (); | |
9893 | if (ch == ':') | |
9894 | { | |
9895 | /* This is the successful exit condition for the loop. */ | |
9896 | if (gfc_next_ascii_char () == ':') | |
9897 | break; | |
9898 | } | |
9899 | ||
9900 | if (ch == ',') | |
9901 | continue; | |
9902 | ||
9903 | goto syntax; | |
9904 | } | |
9905 | ||
9906 | if (gfc_match_eos () == MATCH_YES) | |
9907 | goto syntax; | |
9908 | ||
9909 | for(;;) | |
9910 | { | |
9911 | m = gfc_match_name (name); | |
9912 | if (m != MATCH_YES) | |
9913 | return m; | |
9914 | ||
9915 | if (find_special (name, &sym, true)) | |
9916 | return MATCH_ERROR; | |
f5acf0f2 | 9917 | |
08a6b8e0 TB |
9918 | sym->attr.ext_attr |= attr.ext_attr; |
9919 | ||
9920 | if (gfc_match_eos () == MATCH_YES) | |
9921 | break; | |
9922 | ||
9923 | if (gfc_match_char (',') != MATCH_YES) | |
9924 | goto syntax; | |
9925 | } | |
9926 | ||
9927 | return MATCH_YES; | |
9928 | ||
9929 | syntax: | |
9930 | gfc_error ("Syntax error in !GCC$ ATTRIBUTES statement at %C"); | |
9931 | return MATCH_ERROR; | |
9932 | } |