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6de9cd9a | 1 | /* Declaration statement matcher |
5624e564 | 2 | Copyright (C) 2002-2015 Free Software Foundation, Inc. |
6de9cd9a DN |
3 | Contributed by Andy Vaught |
4 | ||
9fc4d79b | 5 | This file is part of GCC. |
6de9cd9a | 6 | |
9fc4d79b TS |
7 | GCC is free software; you can redistribute it and/or modify it under |
8 | the terms of the GNU General Public License as published by the Free | |
d234d788 | 9 | Software Foundation; either version 3, or (at your option) any later |
9fc4d79b | 10 | version. |
6de9cd9a | 11 | |
9fc4d79b TS |
12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
6de9cd9a DN |
16 | |
17 | You should have received a copy of the GNU General Public License | |
d234d788 NC |
18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
6de9cd9a | 20 | |
6de9cd9a | 21 | #include "config.h" |
d22e4895 | 22 | #include "system.h" |
953bee7c | 23 | #include "coretypes.h" |
2adfab87 AM |
24 | #include "options.h" |
25 | #include "tree.h" | |
6de9cd9a | 26 | #include "gfortran.h" |
2adfab87 | 27 | #include "stringpool.h" |
6de9cd9a DN |
28 | #include "match.h" |
29 | #include "parse.h" | |
b7e75771 | 30 | #include "constructor.h" |
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 TB |
393 | || (sym->attr.flavor != FL_PARAMETER |
394 | && (!dt_sym || dt_sym->attr.flavor != FL_DERIVED))) | |
294fbfc8 | 395 | { |
c4100eae | 396 | gfc_error ("Symbol %qs must be a PARAMETER in DATA statement at %C", |
294fbfc8 TS |
397 | name); |
398 | return MATCH_ERROR; | |
399 | } | |
c3f34952 TB |
400 | else if (dt_sym && dt_sym->attr.flavor == FL_DERIVED) |
401 | return gfc_match_structure_constructor (dt_sym, result); | |
294fbfc8 | 402 | |
d46e0870 JD |
403 | /* Check to see if the value is an initialization array expression. */ |
404 | if (sym->value->expr_type == EXPR_ARRAY) | |
405 | { | |
406 | gfc_current_locus = old_loc; | |
407 | ||
408 | m = gfc_match_init_expr (result); | |
409 | if (m == MATCH_ERROR) | |
410 | return m; | |
411 | ||
412 | if (m == MATCH_YES) | |
413 | { | |
524af0d6 | 414 | if (!gfc_simplify_expr (*result, 0)) |
d46e0870 JD |
415 | m = MATCH_ERROR; |
416 | ||
417 | if ((*result)->expr_type == EXPR_CONSTANT) | |
418 | return m; | |
419 | else | |
420 | { | |
421 | gfc_error ("Invalid initializer %s in Data statement at %C", name); | |
422 | return MATCH_ERROR; | |
423 | } | |
424 | } | |
425 | } | |
426 | ||
294fbfc8 TS |
427 | *result = gfc_copy_expr (sym->value); |
428 | return MATCH_YES; | |
429 | } | |
430 | ||
431 | ||
432 | /* Match a list of values in a DATA statement. The leading '/' has | |
433 | already been seen at this point. */ | |
434 | ||
435 | static match | |
636dff67 | 436 | top_val_list (gfc_data *data) |
294fbfc8 | 437 | { |
7b901ac4 | 438 | gfc_data_value *new_val, *tail; |
294fbfc8 | 439 | gfc_expr *expr; |
294fbfc8 TS |
440 | match m; |
441 | ||
442 | tail = NULL; | |
443 | ||
444 | for (;;) | |
445 | { | |
446 | m = match_data_constant (&expr); | |
447 | if (m == MATCH_NO) | |
448 | goto syntax; | |
449 | if (m == MATCH_ERROR) | |
450 | return MATCH_ERROR; | |
451 | ||
7b901ac4 KG |
452 | new_val = gfc_get_data_value (); |
453 | mpz_init (new_val->repeat); | |
294fbfc8 TS |
454 | |
455 | if (tail == NULL) | |
7b901ac4 | 456 | data->value = new_val; |
294fbfc8 | 457 | else |
7b901ac4 | 458 | tail->next = new_val; |
294fbfc8 | 459 | |
7b901ac4 | 460 | tail = new_val; |
294fbfc8 TS |
461 | |
462 | if (expr->ts.type != BT_INTEGER || gfc_match_char ('*') != MATCH_YES) | |
463 | { | |
464 | tail->expr = expr; | |
f2112868 | 465 | mpz_set_ui (tail->repeat, 1); |
294fbfc8 TS |
466 | } |
467 | else | |
468 | { | |
46f4f794 | 469 | mpz_set (tail->repeat, expr->value.integer); |
294fbfc8 | 470 | gfc_free_expr (expr); |
294fbfc8 TS |
471 | |
472 | m = match_data_constant (&tail->expr); | |
473 | if (m == MATCH_NO) | |
474 | goto syntax; | |
475 | if (m == MATCH_ERROR) | |
476 | return MATCH_ERROR; | |
477 | } | |
478 | ||
479 | if (gfc_match_char ('/') == MATCH_YES) | |
480 | break; | |
481 | if (gfc_match_char (',') == MATCH_NO) | |
482 | goto syntax; | |
483 | } | |
484 | ||
485 | return MATCH_YES; | |
486 | ||
487 | syntax: | |
488 | gfc_syntax_error (ST_DATA); | |
a9f6f1f2 | 489 | gfc_free_data_all (gfc_current_ns); |
294fbfc8 TS |
490 | return MATCH_ERROR; |
491 | } | |
492 | ||
493 | ||
494 | /* Matches an old style initialization. */ | |
495 | ||
496 | static match | |
497 | match_old_style_init (const char *name) | |
498 | { | |
499 | match m; | |
500 | gfc_symtree *st; | |
ed0e3607 | 501 | gfc_symbol *sym; |
294fbfc8 TS |
502 | gfc_data *newdata; |
503 | ||
504 | /* Set up data structure to hold initializers. */ | |
505 | gfc_find_sym_tree (name, NULL, 0, &st); | |
ed0e3607 AL |
506 | sym = st->n.sym; |
507 | ||
294fbfc8 TS |
508 | newdata = gfc_get_data (); |
509 | newdata->var = gfc_get_data_variable (); | |
510 | newdata->var->expr = gfc_get_variable_expr (st); | |
8c5c0b80 | 511 | newdata->where = gfc_current_locus; |
294fbfc8 | 512 | |
66e4ab31 | 513 | /* Match initial value list. This also eats the terminal '/'. */ |
294fbfc8 TS |
514 | m = top_val_list (newdata); |
515 | if (m != MATCH_YES) | |
516 | { | |
cede9502 | 517 | free (newdata); |
294fbfc8 TS |
518 | return m; |
519 | } | |
520 | ||
521 | if (gfc_pure (NULL)) | |
522 | { | |
523 | gfc_error ("Initialization at %C is not allowed in a PURE procedure"); | |
cede9502 | 524 | free (newdata); |
294fbfc8 TS |
525 | return MATCH_ERROR; |
526 | } | |
ccd7751b | 527 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
f1f39033 | 528 | |
ed0e3607 | 529 | /* Mark the variable as having appeared in a data statement. */ |
524af0d6 | 530 | if (!gfc_add_data (&sym->attr, sym->name, &sym->declared_at)) |
ed0e3607 | 531 | { |
cede9502 | 532 | free (newdata); |
ed0e3607 AL |
533 | return MATCH_ERROR; |
534 | } | |
535 | ||
294fbfc8 TS |
536 | /* Chain in namespace list of DATA initializers. */ |
537 | newdata->next = gfc_current_ns->data; | |
538 | gfc_current_ns->data = newdata; | |
539 | ||
540 | return m; | |
541 | } | |
542 | ||
636dff67 | 543 | |
294fbfc8 | 544 | /* Match the stuff following a DATA statement. If ERROR_FLAG is set, |
13795658 | 545 | we are matching a DATA statement and are therefore issuing an error |
d51347f9 | 546 | if we encounter something unexpected, if not, we're trying to match |
69de3b83 | 547 | an old-style initialization expression of the form INTEGER I /2/. */ |
294fbfc8 TS |
548 | |
549 | match | |
550 | gfc_match_data (void) | |
551 | { | |
7b901ac4 | 552 | gfc_data *new_data; |
294fbfc8 TS |
553 | match m; |
554 | ||
ca39e6f2 | 555 | set_in_match_data (true); |
2220652d | 556 | |
294fbfc8 TS |
557 | for (;;) |
558 | { | |
7b901ac4 KG |
559 | new_data = gfc_get_data (); |
560 | new_data->where = gfc_current_locus; | |
294fbfc8 | 561 | |
7b901ac4 | 562 | m = top_var_list (new_data); |
294fbfc8 TS |
563 | if (m != MATCH_YES) |
564 | goto cleanup; | |
565 | ||
7b901ac4 | 566 | m = top_val_list (new_data); |
294fbfc8 TS |
567 | if (m != MATCH_YES) |
568 | goto cleanup; | |
569 | ||
7b901ac4 KG |
570 | new_data->next = gfc_current_ns->data; |
571 | gfc_current_ns->data = new_data; | |
294fbfc8 TS |
572 | |
573 | if (gfc_match_eos () == MATCH_YES) | |
574 | break; | |
575 | ||
576 | gfc_match_char (','); /* Optional comma */ | |
577 | } | |
578 | ||
ca39e6f2 | 579 | set_in_match_data (false); |
2220652d | 580 | |
294fbfc8 TS |
581 | if (gfc_pure (NULL)) |
582 | { | |
583 | gfc_error ("DATA statement at %C is not allowed in a PURE procedure"); | |
584 | return MATCH_ERROR; | |
585 | } | |
ccd7751b | 586 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
f1f39033 | 587 | |
294fbfc8 TS |
588 | return MATCH_YES; |
589 | ||
590 | cleanup: | |
ca39e6f2 | 591 | set_in_match_data (false); |
7b901ac4 | 592 | gfc_free_data (new_data); |
294fbfc8 TS |
593 | return MATCH_ERROR; |
594 | } | |
595 | ||
596 | ||
597 | /************************ Declaration statements *********************/ | |
598 | ||
d3a9eea2 | 599 | |
eea58adb | 600 | /* Auxiliary function to merge DIMENSION and CODIMENSION array specs. */ |
d3a9eea2 | 601 | |
524af0d6 | 602 | static bool |
d3a9eea2 TB |
603 | merge_array_spec (gfc_array_spec *from, gfc_array_spec *to, bool copy) |
604 | { | |
605 | int i; | |
606 | ||
63fbf586 TB |
607 | if ((from->type == AS_ASSUMED_RANK && to->corank) |
608 | || (to->type == AS_ASSUMED_RANK && from->corank)) | |
609 | { | |
610 | gfc_error ("The assumed-rank array at %C shall not have a codimension"); | |
524af0d6 | 611 | return false; |
63fbf586 | 612 | } |
c62c6622 | 613 | |
d3a9eea2 TB |
614 | if (to->rank == 0 && from->rank > 0) |
615 | { | |
616 | to->rank = from->rank; | |
617 | to->type = from->type; | |
618 | to->cray_pointee = from->cray_pointee; | |
619 | to->cp_was_assumed = from->cp_was_assumed; | |
620 | ||
621 | for (i = 0; i < to->corank; i++) | |
622 | { | |
623 | to->lower[from->rank + i] = to->lower[i]; | |
624 | to->upper[from->rank + i] = to->upper[i]; | |
625 | } | |
626 | for (i = 0; i < from->rank; i++) | |
627 | { | |
628 | if (copy) | |
629 | { | |
630 | to->lower[i] = gfc_copy_expr (from->lower[i]); | |
631 | to->upper[i] = gfc_copy_expr (from->upper[i]); | |
632 | } | |
633 | else | |
634 | { | |
635 | to->lower[i] = from->lower[i]; | |
636 | to->upper[i] = from->upper[i]; | |
637 | } | |
638 | } | |
639 | } | |
640 | else if (to->corank == 0 && from->corank > 0) | |
641 | { | |
642 | to->corank = from->corank; | |
643 | to->cotype = from->cotype; | |
644 | ||
645 | for (i = 0; i < from->corank; i++) | |
646 | { | |
647 | if (copy) | |
648 | { | |
649 | to->lower[to->rank + i] = gfc_copy_expr (from->lower[i]); | |
650 | to->upper[to->rank + i] = gfc_copy_expr (from->upper[i]); | |
651 | } | |
652 | else | |
653 | { | |
654 | to->lower[to->rank + i] = from->lower[i]; | |
655 | to->upper[to->rank + i] = from->upper[i]; | |
656 | } | |
657 | } | |
658 | } | |
63fbf586 | 659 | |
524af0d6 | 660 | return true; |
d3a9eea2 TB |
661 | } |
662 | ||
663 | ||
6de9cd9a DN |
664 | /* Match an intent specification. Since this can only happen after an |
665 | INTENT word, a legal intent-spec must follow. */ | |
666 | ||
667 | static sym_intent | |
668 | match_intent_spec (void) | |
669 | { | |
670 | ||
671 | if (gfc_match (" ( in out )") == MATCH_YES) | |
672 | return INTENT_INOUT; | |
673 | if (gfc_match (" ( in )") == MATCH_YES) | |
674 | return INTENT_IN; | |
675 | if (gfc_match (" ( out )") == MATCH_YES) | |
676 | return INTENT_OUT; | |
677 | ||
678 | gfc_error ("Bad INTENT specification at %C"); | |
679 | return INTENT_UNKNOWN; | |
680 | } | |
681 | ||
682 | ||
683 | /* Matches a character length specification, which is either a | |
e69afb29 | 684 | specification expression, '*', or ':'. */ |
6de9cd9a DN |
685 | |
686 | static match | |
e69afb29 | 687 | char_len_param_value (gfc_expr **expr, bool *deferred) |
6de9cd9a | 688 | { |
cba28dad JD |
689 | match m; |
690 | ||
e69afb29 SK |
691 | *expr = NULL; |
692 | *deferred = false; | |
693 | ||
6de9cd9a | 694 | if (gfc_match_char ('*') == MATCH_YES) |
e69afb29 SK |
695 | return MATCH_YES; |
696 | ||
697 | if (gfc_match_char (':') == MATCH_YES) | |
6de9cd9a | 698 | { |
98a819ea | 699 | if (!gfc_notify_std (GFC_STD_F2003, "deferred type parameter at %C")) |
e69afb29 SK |
700 | return MATCH_ERROR; |
701 | ||
702 | *deferred = true; | |
703 | ||
6de9cd9a DN |
704 | return MATCH_YES; |
705 | } | |
706 | ||
cba28dad | 707 | m = gfc_match_expr (expr); |
f37e928c | 708 | |
98a819ea SK |
709 | if (m == MATCH_NO || m == MATCH_ERROR) |
710 | return m; | |
711 | ||
712 | if (!gfc_expr_check_typed (*expr, gfc_current_ns, false)) | |
f37e928c DK |
713 | return MATCH_ERROR; |
714 | ||
98a819ea | 715 | if ((*expr)->expr_type == EXPR_FUNCTION) |
cba28dad | 716 | { |
8d48826b SK |
717 | if ((*expr)->ts.type == BT_INTEGER |
718 | || ((*expr)->ts.type == BT_UNKNOWN | |
719 | && strcmp((*expr)->symtree->name, "null") != 0)) | |
720 | return MATCH_YES; | |
721 | ||
722 | goto syntax; | |
723 | } | |
724 | else if ((*expr)->expr_type == EXPR_CONSTANT) | |
725 | { | |
726 | /* F2008, 4.4.3.1: The length is a type parameter; its kind is | |
727 | processor dependent and its value is greater than or equal to zero. | |
728 | F2008, 4.4.3.2: If the character length parameter value evaluates | |
729 | to a negative value, the length of character entities declared | |
730 | is zero. */ | |
731 | ||
732 | if ((*expr)->ts.type == BT_INTEGER) | |
cba28dad | 733 | { |
8d48826b SK |
734 | if (mpz_cmp_si ((*expr)->value.integer, 0) < 0) |
735 | mpz_set_si ((*expr)->value.integer, 0); | |
cba28dad | 736 | } |
8d48826b SK |
737 | else |
738 | goto syntax; | |
cba28dad | 739 | } |
8d48826b SK |
740 | else if ((*expr)->expr_type == EXPR_ARRAY) |
741 | goto syntax; | |
742 | else if ((*expr)->expr_type == EXPR_VARIABLE) | |
743 | { | |
744 | gfc_expr *e; | |
745 | ||
746 | e = gfc_copy_expr (*expr); | |
747 | ||
748 | /* This catches the invalid code "[character(m(2:3)) :: 'x', 'y']", | |
749 | which causes an ICE if gfc_reduce_init_expr() is called. */ | |
54b96a2d SK |
750 | if (e->ref && e->ref->type == REF_ARRAY |
751 | && e->ref->u.ar.type == AR_UNKNOWN | |
8d48826b SK |
752 | && e->ref->u.ar.dimen_type[0] == DIMEN_RANGE) |
753 | goto syntax; | |
754 | ||
755 | gfc_reduce_init_expr (e); | |
98a819ea | 756 | |
54b96a2d SK |
757 | if ((e->ref && e->ref->type == REF_ARRAY |
758 | && e->ref->u.ar.type != AR_ELEMENT) | |
8d48826b SK |
759 | || (!e->ref && e->expr_type == EXPR_ARRAY)) |
760 | { | |
761 | gfc_free_expr (e); | |
762 | goto syntax; | |
763 | } | |
764 | ||
765 | gfc_free_expr (e); | |
766 | } | |
98a819ea | 767 | |
cba28dad JD |
768 | return m; |
769 | ||
770 | syntax: | |
8d48826b | 771 | gfc_error ("Scalar INTEGER expression expected at %L", &(*expr)->where); |
cba28dad | 772 | return MATCH_ERROR; |
6de9cd9a DN |
773 | } |
774 | ||
775 | ||
776 | /* A character length is a '*' followed by a literal integer or a | |
777 | char_len_param_value in parenthesis. */ | |
778 | ||
779 | static match | |
62732c30 | 780 | match_char_length (gfc_expr **expr, bool *deferred, bool obsolescent_check) |
6de9cd9a | 781 | { |
5cf54585 | 782 | int length; |
6de9cd9a DN |
783 | match m; |
784 | ||
f5acf0f2 | 785 | *deferred = false; |
6de9cd9a DN |
786 | m = gfc_match_char ('*'); |
787 | if (m != MATCH_YES) | |
788 | return m; | |
789 | ||
5cf54585 | 790 | m = gfc_match_small_literal_int (&length, NULL); |
6de9cd9a DN |
791 | if (m == MATCH_ERROR) |
792 | return m; | |
793 | ||
794 | if (m == MATCH_YES) | |
795 | { | |
62732c30 | 796 | if (obsolescent_check |
524af0d6 | 797 | && !gfc_notify_std (GFC_STD_F95_OBS, "Old-style character length at %C")) |
e2ab8b09 | 798 | return MATCH_ERROR; |
b7e75771 | 799 | *expr = gfc_get_int_expr (gfc_default_integer_kind, NULL, length); |
6de9cd9a DN |
800 | return m; |
801 | } | |
802 | ||
803 | if (gfc_match_char ('(') == MATCH_NO) | |
804 | goto syntax; | |
805 | ||
e69afb29 | 806 | m = char_len_param_value (expr, deferred); |
1c8bcdf7 PT |
807 | if (m != MATCH_YES && gfc_matching_function) |
808 | { | |
809 | gfc_undo_symbols (); | |
810 | m = MATCH_YES; | |
811 | } | |
812 | ||
6de9cd9a DN |
813 | if (m == MATCH_ERROR) |
814 | return m; | |
815 | if (m == MATCH_NO) | |
816 | goto syntax; | |
817 | ||
818 | if (gfc_match_char (')') == MATCH_NO) | |
819 | { | |
820 | gfc_free_expr (*expr); | |
821 | *expr = NULL; | |
822 | goto syntax; | |
823 | } | |
824 | ||
825 | return MATCH_YES; | |
826 | ||
827 | syntax: | |
828 | gfc_error ("Syntax error in character length specification at %C"); | |
829 | return MATCH_ERROR; | |
830 | } | |
831 | ||
832 | ||
9e35b386 EE |
833 | /* Special subroutine for finding a symbol. Check if the name is found |
834 | in the current name space. If not, and we're compiling a function or | |
835 | subroutine and the parent compilation unit is an interface, then check | |
836 | to see if the name we've been given is the name of the interface | |
837 | (located in another namespace). */ | |
6de9cd9a DN |
838 | |
839 | static int | |
08a6b8e0 | 840 | find_special (const char *name, gfc_symbol **result, bool allow_subroutine) |
6de9cd9a DN |
841 | { |
842 | gfc_state_data *s; | |
08a6b8e0 | 843 | gfc_symtree *st; |
9e35b386 | 844 | int i; |
6de9cd9a | 845 | |
08a6b8e0 | 846 | i = gfc_get_sym_tree (name, NULL, &st, allow_subroutine); |
d51347f9 | 847 | if (i == 0) |
08a6b8e0 TB |
848 | { |
849 | *result = st ? st->n.sym : NULL; | |
850 | goto end; | |
851 | } | |
d51347f9 | 852 | |
6de9cd9a DN |
853 | if (gfc_current_state () != COMP_SUBROUTINE |
854 | && gfc_current_state () != COMP_FUNCTION) | |
9e35b386 | 855 | goto end; |
6de9cd9a DN |
856 | |
857 | s = gfc_state_stack->previous; | |
858 | if (s == NULL) | |
9e35b386 | 859 | goto end; |
6de9cd9a DN |
860 | |
861 | if (s->state != COMP_INTERFACE) | |
9e35b386 | 862 | goto end; |
6de9cd9a | 863 | if (s->sym == NULL) |
66e4ab31 | 864 | goto end; /* Nameless interface. */ |
6de9cd9a DN |
865 | |
866 | if (strcmp (name, s->sym->name) == 0) | |
867 | { | |
868 | *result = s->sym; | |
869 | return 0; | |
870 | } | |
871 | ||
9e35b386 EE |
872 | end: |
873 | return i; | |
6de9cd9a DN |
874 | } |
875 | ||
876 | ||
877 | /* Special subroutine for getting a symbol node associated with a | |
878 | procedure name, used in SUBROUTINE and FUNCTION statements. The | |
879 | symbol is created in the parent using with symtree node in the | |
880 | child unit pointing to the symbol. If the current namespace has no | |
881 | parent, then the symbol is just created in the current unit. */ | |
882 | ||
883 | static int | |
636dff67 | 884 | get_proc_name (const char *name, gfc_symbol **result, bool module_fcn_entry) |
6de9cd9a DN |
885 | { |
886 | gfc_symtree *st; | |
887 | gfc_symbol *sym; | |
a7ca4d8d | 888 | int rc = 0; |
6de9cd9a | 889 | |
1a492601 PT |
890 | /* Module functions have to be left in their own namespace because |
891 | they have potentially (almost certainly!) already been referenced. | |
892 | In this sense, they are rather like external functions. This is | |
893 | fixed up in resolve.c(resolve_entries), where the symbol name- | |
894 | space is set to point to the master function, so that the fake | |
895 | result mechanism can work. */ | |
896 | if (module_fcn_entry) | |
6c12686b PT |
897 | { |
898 | /* Present if entry is declared to be a module procedure. */ | |
899 | rc = gfc_find_symbol (name, gfc_current_ns->parent, 0, result); | |
aa84a9a5 | 900 | |
6c12686b PT |
901 | if (*result == NULL) |
902 | rc = gfc_get_symbol (name, NULL, result); | |
2e32a71e | 903 | else if (!gfc_get_symbol (name, NULL, &sym) && sym |
aa84a9a5 PT |
904 | && (*result)->ts.type == BT_UNKNOWN |
905 | && sym->attr.flavor == FL_UNKNOWN) | |
906 | /* Pick up the typespec for the entry, if declared in the function | |
907 | body. Note that this symbol is FL_UNKNOWN because it will | |
908 | only have appeared in a type declaration. The local symtree | |
909 | is set to point to the module symbol and a unique symtree | |
910 | to the local version. This latter ensures a correct clearing | |
911 | of the symbols. */ | |
2e32a71e PT |
912 | { |
913 | /* If the ENTRY proceeds its specification, we need to ensure | |
914 | that this does not raise a "has no IMPLICIT type" error. */ | |
915 | if (sym->ts.type == BT_UNKNOWN) | |
0e5a218b | 916 | sym->attr.untyped = 1; |
2e32a71e | 917 | |
0e5a218b | 918 | (*result)->ts = sym->ts; |
2e32a71e PT |
919 | |
920 | /* Put the symbol in the procedure namespace so that, should | |
df2fba9e | 921 | the ENTRY precede its specification, the specification |
2e32a71e PT |
922 | can be applied. */ |
923 | (*result)->ns = gfc_current_ns; | |
924 | ||
925 | gfc_find_sym_tree (name, gfc_current_ns, 0, &st); | |
926 | st->n.sym = *result; | |
927 | st = gfc_get_unique_symtree (gfc_current_ns); | |
2050626a | 928 | sym->refs++; |
2e32a71e PT |
929 | st->n.sym = sym; |
930 | } | |
6c12686b | 931 | } |
68ea355b PT |
932 | else |
933 | rc = gfc_get_symbol (name, gfc_current_ns->parent, result); | |
6de9cd9a | 934 | |
a7ca4d8d PT |
935 | if (rc) |
936 | return rc; | |
937 | ||
68ea355b | 938 | sym = *result; |
79124116 PT |
939 | if (sym->attr.proc == PROC_ST_FUNCTION) |
940 | return rc; | |
6de9cd9a | 941 | |
4668d6f9 PT |
942 | if (sym->attr.module_procedure |
943 | && sym->attr.if_source == IFSRC_IFBODY) | |
944 | { | |
945 | /* Create a partially populated interface symbol to carry the | |
946 | characteristics of the procedure and the result. */ | |
947 | sym->ts.interface = gfc_new_symbol (name, sym->ns); | |
948 | gfc_add_type (sym->ts.interface, &(sym->ts), | |
949 | &gfc_current_locus); | |
950 | gfc_copy_attr (&sym->ts.interface->attr, &sym->attr, NULL); | |
951 | if (sym->attr.dimension) | |
952 | sym->ts.interface->as = gfc_copy_array_spec (sym->as); | |
953 | ||
954 | /* Ideally, at this point, a copy would be made of the formal | |
955 | arguments and their namespace. However, this does not appear | |
956 | to be necessary, albeit at the expense of not being able to | |
957 | use gfc_compare_interfaces directly. */ | |
958 | ||
959 | if (sym->result && sym->result != sym) | |
960 | { | |
961 | sym->ts.interface->result = sym->result; | |
962 | sym->result = NULL; | |
963 | } | |
964 | else if (sym->result) | |
965 | { | |
966 | sym->ts.interface->result = sym->ts.interface; | |
967 | } | |
968 | } | |
969 | else if (sym && !sym->gfc_new | |
970 | && gfc_current_state () != COMP_INTERFACE) | |
68ea355b | 971 | { |
cda7004b PT |
972 | /* Trap another encompassed procedure with the same name. All |
973 | these conditions are necessary to avoid picking up an entry | |
974 | whose name clashes with that of the encompassing procedure; | |
2050626a | 975 | this is handled using gsymbols to register unique, globally |
cda7004b | 976 | accessible names. */ |
68ea355b | 977 | if (sym->attr.flavor != 0 |
636dff67 SK |
978 | && sym->attr.proc != 0 |
979 | && (sym->attr.subroutine || sym->attr.function) | |
980 | && sym->attr.if_source != IFSRC_UNKNOWN) | |
fea70c99 MLI |
981 | gfc_error_now ("Procedure %qs at %C is already defined at %L", |
982 | name, &sym->declared_at); | |
68ea355b | 983 | |
fd3e70af JD |
984 | /* Trap a procedure with a name the same as interface in the |
985 | encompassing scope. */ | |
986 | if (sym->attr.generic != 0 | |
2305fa31 JD |
987 | && (sym->attr.subroutine || sym->attr.function) |
988 | && !sym->attr.mod_proc) | |
fea70c99 MLI |
989 | gfc_error_now ("Name %qs at %C is already defined" |
990 | " as a generic interface at %L", | |
991 | name, &sym->declared_at); | |
fd3e70af | 992 | |
68ea355b PT |
993 | /* Trap declarations of attributes in encompassing scope. The |
994 | signature for this is that ts.kind is set. Legitimate | |
995 | references only set ts.type. */ | |
996 | if (sym->ts.kind != 0 | |
636dff67 SK |
997 | && !sym->attr.implicit_type |
998 | && sym->attr.proc == 0 | |
999 | && gfc_current_ns->parent != NULL | |
1000 | && sym->attr.access == 0 | |
1001 | && !module_fcn_entry) | |
fea70c99 MLI |
1002 | gfc_error_now ("Procedure %qs at %C has an explicit interface " |
1003 | "and must not have attributes declared at %L", | |
1004 | name, &sym->declared_at); | |
68ea355b PT |
1005 | } |
1006 | ||
1007 | if (gfc_current_ns->parent == NULL || *result == NULL) | |
1008 | return rc; | |
6de9cd9a | 1009 | |
1a492601 PT |
1010 | /* Module function entries will already have a symtree in |
1011 | the current namespace but will need one at module level. */ | |
1012 | if (module_fcn_entry) | |
6c12686b PT |
1013 | { |
1014 | /* Present if entry is declared to be a module procedure. */ | |
1015 | rc = gfc_find_sym_tree (name, gfc_current_ns->parent, 0, &st); | |
1016 | if (st == NULL) | |
1017 | st = gfc_new_symtree (&gfc_current_ns->parent->sym_root, name); | |
1018 | } | |
1a492601 PT |
1019 | else |
1020 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); | |
6de9cd9a | 1021 | |
6de9cd9a DN |
1022 | st->n.sym = sym; |
1023 | sym->refs++; | |
1024 | ||
66e4ab31 | 1025 | /* See if the procedure should be a module procedure. */ |
6de9cd9a | 1026 | |
1a492601 | 1027 | if (((sym->ns->proc_name != NULL |
6c12686b PT |
1028 | && sym->ns->proc_name->attr.flavor == FL_MODULE |
1029 | && sym->attr.proc != PROC_MODULE) | |
1030 | || (module_fcn_entry && sym->attr.proc != PROC_MODULE)) | |
524af0d6 | 1031 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
6de9cd9a DN |
1032 | rc = 2; |
1033 | ||
1034 | return rc; | |
1035 | } | |
1036 | ||
1037 | ||
a8b3b0b6 CR |
1038 | /* Verify that the given symbol representing a parameter is C |
1039 | interoperable, by checking to see if it was marked as such after | |
1040 | its declaration. If the given symbol is not interoperable, a | |
1041 | warning is reported, thus removing the need to return the status to | |
1042 | the calling function. The standard does not require the user use | |
1043 | one of the iso_c_binding named constants to declare an | |
1044 | interoperable parameter, but we can't be sure if the param is C | |
1045 | interop or not if the user doesn't. For example, integer(4) may be | |
1046 | legal Fortran, but doesn't have meaning in C. It may interop with | |
1047 | a number of the C types, which causes a problem because the | |
1048 | compiler can't know which one. This code is almost certainly not | |
1049 | portable, and the user will get what they deserve if the C type | |
1050 | across platforms isn't always interoperable with integer(4). If | |
1051 | the user had used something like integer(c_int) or integer(c_long), | |
1052 | the compiler could have automatically handled the varying sizes | |
1053 | across platforms. */ | |
1054 | ||
524af0d6 | 1055 | bool |
00820a2a | 1056 | gfc_verify_c_interop_param (gfc_symbol *sym) |
a8b3b0b6 CR |
1057 | { |
1058 | int is_c_interop = 0; | |
524af0d6 | 1059 | bool retval = true; |
a8b3b0b6 CR |
1060 | |
1061 | /* We check implicitly typed variables in symbol.c:gfc_set_default_type(). | |
1062 | Don't repeat the checks here. */ | |
1063 | if (sym->attr.implicit_type) | |
524af0d6 | 1064 | return true; |
f5acf0f2 | 1065 | |
a8b3b0b6 CR |
1066 | /* For subroutines or functions that are passed to a BIND(C) procedure, |
1067 | they're interoperable if they're BIND(C) and their params are all | |
1068 | interoperable. */ | |
1069 | if (sym->attr.flavor == FL_PROCEDURE) | |
1070 | { | |
1071 | if (sym->attr.is_bind_c == 0) | |
1072 | { | |
4daa149b TB |
1073 | gfc_error_now ("Procedure %qs at %L must have the BIND(C) " |
1074 | "attribute to be C interoperable", sym->name, | |
1075 | &(sym->declared_at)); | |
524af0d6 | 1076 | return false; |
a8b3b0b6 CR |
1077 | } |
1078 | else | |
1079 | { | |
1080 | if (sym->attr.is_c_interop == 1) | |
1081 | /* We've already checked this procedure; don't check it again. */ | |
524af0d6 | 1082 | return true; |
a8b3b0b6 CR |
1083 | else |
1084 | return verify_bind_c_sym (sym, &(sym->ts), sym->attr.in_common, | |
1085 | sym->common_block); | |
1086 | } | |
1087 | } | |
f5acf0f2 | 1088 | |
a8b3b0b6 CR |
1089 | /* See if we've stored a reference to a procedure that owns sym. */ |
1090 | if (sym->ns != NULL && sym->ns->proc_name != NULL) | |
1091 | { | |
1092 | if (sym->ns->proc_name->attr.is_bind_c == 1) | |
1093 | { | |
524af0d6 | 1094 | is_c_interop = (gfc_verify_c_interop(&(sym->ts)) ? 1 : 0); |
a8b3b0b6 CR |
1095 | |
1096 | if (is_c_interop != 1) | |
1097 | { | |
1098 | /* Make personalized messages to give better feedback. */ | |
1099 | if (sym->ts.type == BT_DERIVED) | |
c4100eae MLI |
1100 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1101 | "BIND(C) procedure %qs but is not C interoperable " | |
1102 | "because derived type %qs is not C interoperable", | |
a8b3b0b6 | 1103 | sym->name, &(sym->declared_at), |
f5acf0f2 | 1104 | sym->ns->proc_name->name, |
bc21d315 | 1105 | sym->ts.u.derived->name); |
00820a2a | 1106 | else if (sym->ts.type == BT_CLASS) |
c4100eae MLI |
1107 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1108 | "BIND(C) procedure %qs but is not C interoperable " | |
00820a2a JW |
1109 | "because it is polymorphic", |
1110 | sym->name, &(sym->declared_at), | |
1111 | sym->ns->proc_name->name); | |
4daa149b | 1112 | else if (warn_c_binding_type) |
48749dbc MLI |
1113 | gfc_warning (OPT_Wc_binding_type, |
1114 | "Variable %qs at %L is a dummy argument of the " | |
1115 | "BIND(C) procedure %qs but may not be C " | |
a8b3b0b6 CR |
1116 | "interoperable", |
1117 | sym->name, &(sym->declared_at), | |
1118 | sym->ns->proc_name->name); | |
1119 | } | |
aa5e22f0 CR |
1120 | |
1121 | /* Character strings are only C interoperable if they have a | |
1122 | length of 1. */ | |
1123 | if (sym->ts.type == BT_CHARACTER) | |
1124 | { | |
bc21d315 | 1125 | gfc_charlen *cl = sym->ts.u.cl; |
aa5e22f0 CR |
1126 | if (!cl || !cl->length || cl->length->expr_type != EXPR_CONSTANT |
1127 | || mpz_cmp_si (cl->length->value.integer, 1) != 0) | |
1128 | { | |
c4100eae | 1129 | gfc_error ("Character argument %qs at %L " |
aa5e22f0 | 1130 | "must be length 1 because " |
c4100eae | 1131 | "procedure %qs is BIND(C)", |
aa5e22f0 CR |
1132 | sym->name, &sym->declared_at, |
1133 | sym->ns->proc_name->name); | |
524af0d6 | 1134 | retval = false; |
aa5e22f0 CR |
1135 | } |
1136 | } | |
1137 | ||
a8b3b0b6 CR |
1138 | /* We have to make sure that any param to a bind(c) routine does |
1139 | not have the allocatable, pointer, or optional attributes, | |
1140 | according to J3/04-007, section 5.1. */ | |
60f6ca95 | 1141 | if (sym->attr.allocatable == 1 |
a4d9b221 TB |
1142 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable %qs at %L with " |
1143 | "ALLOCATABLE attribute in procedure %qs " | |
60f6ca95 TB |
1144 | "with BIND(C)", sym->name, |
1145 | &(sym->declared_at), | |
1146 | sym->ns->proc_name->name)) | |
1147 | retval = false; | |
1148 | ||
1149 | if (sym->attr.pointer == 1 | |
a4d9b221 TB |
1150 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable %qs at %L with " |
1151 | "POINTER attribute in procedure %qs " | |
60f6ca95 TB |
1152 | "with BIND(C)", sym->name, |
1153 | &(sym->declared_at), | |
1154 | sym->ns->proc_name->name)) | |
1155 | retval = false; | |
1156 | ||
1157 | if ((sym->attr.allocatable || sym->attr.pointer) && !sym->as) | |
a8b3b0b6 | 1158 | { |
c4100eae MLI |
1159 | gfc_error ("Scalar variable %qs at %L with POINTER or " |
1160 | "ALLOCATABLE in procedure %qs with BIND(C) is not yet" | |
60f6ca95 | 1161 | " supported", sym->name, &(sym->declared_at), |
a8b3b0b6 | 1162 | sym->ns->proc_name->name); |
524af0d6 | 1163 | retval = false; |
a8b3b0b6 CR |
1164 | } |
1165 | ||
2e8d9212 | 1166 | if (sym->attr.optional == 1 && sym->attr.value) |
a8b3b0b6 | 1167 | { |
c4100eae MLI |
1168 | gfc_error ("Variable %qs at %L cannot have both the OPTIONAL " |
1169 | "and the VALUE attribute because procedure %qs " | |
2e8d9212 | 1170 | "is BIND(C)", sym->name, &(sym->declared_at), |
a8b3b0b6 | 1171 | sym->ns->proc_name->name); |
524af0d6 | 1172 | retval = false; |
a8b3b0b6 | 1173 | } |
2e8d9212 | 1174 | else if (sym->attr.optional == 1 |
a4d9b221 | 1175 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable %qs " |
524af0d6 | 1176 | "at %L with OPTIONAL attribute in " |
a4d9b221 | 1177 | "procedure %qs which is BIND(C)", |
524af0d6 JB |
1178 | sym->name, &(sym->declared_at), |
1179 | sym->ns->proc_name->name)) | |
1180 | retval = false; | |
a8b3b0b6 CR |
1181 | |
1182 | /* Make sure that if it has the dimension attribute, that it is | |
95d47b8d TB |
1183 | either assumed size or explicit shape. Deferred shape is already |
1184 | covered by the pointer/allocatable attribute. */ | |
1185 | if (sym->as != NULL && sym->as->type == AS_ASSUMED_SHAPE | |
2a2703a2 | 1186 | && !gfc_notify_std (GFC_STD_F2008_TS, "Assumed-shape array %qs " |
524af0d6 JB |
1187 | "at %L as dummy argument to the BIND(C) " |
1188 | "procedure '%s' at %L", sym->name, | |
1189 | &(sym->declared_at), | |
1190 | sym->ns->proc_name->name, | |
1191 | &(sym->ns->proc_name->declared_at))) | |
1192 | retval = false; | |
a8b3b0b6 CR |
1193 | } |
1194 | } | |
1195 | ||
1196 | return retval; | |
1197 | } | |
1198 | ||
1199 | ||
cf2b3c22 | 1200 | |
a8b3b0b6 | 1201 | /* Function called by variable_decl() that adds a name to the symbol table. */ |
6de9cd9a | 1202 | |
524af0d6 | 1203 | static bool |
e69afb29 | 1204 | build_sym (const char *name, gfc_charlen *cl, bool cl_deferred, |
636dff67 | 1205 | gfc_array_spec **as, locus *var_locus) |
6de9cd9a DN |
1206 | { |
1207 | symbol_attribute attr; | |
1208 | gfc_symbol *sym; | |
1209 | ||
9e35b386 | 1210 | if (gfc_get_symbol (name, NULL, &sym)) |
524af0d6 | 1211 | return false; |
6de9cd9a | 1212 | |
66e4ab31 | 1213 | /* Start updating the symbol table. Add basic type attribute if present. */ |
6de9cd9a | 1214 | if (current_ts.type != BT_UNKNOWN |
636dff67 SK |
1215 | && (sym->attr.implicit_type == 0 |
1216 | || !gfc_compare_types (&sym->ts, ¤t_ts)) | |
524af0d6 JB |
1217 | && !gfc_add_type (sym, ¤t_ts, var_locus)) |
1218 | return false; | |
6de9cd9a DN |
1219 | |
1220 | if (sym->ts.type == BT_CHARACTER) | |
e69afb29 SK |
1221 | { |
1222 | sym->ts.u.cl = cl; | |
1223 | sym->ts.deferred = cl_deferred; | |
1224 | } | |
6de9cd9a DN |
1225 | |
1226 | /* Add dimension attribute if present. */ | |
524af0d6 JB |
1227 | if (!gfc_set_array_spec (sym, *as, var_locus)) |
1228 | return false; | |
6de9cd9a DN |
1229 | *as = NULL; |
1230 | ||
1231 | /* Add attribute to symbol. The copy is so that we can reset the | |
1232 | dimension attribute. */ | |
1233 | attr = current_attr; | |
1234 | attr.dimension = 0; | |
be59db2d | 1235 | attr.codimension = 0; |
6de9cd9a | 1236 | |
524af0d6 JB |
1237 | if (!gfc_copy_attr (&sym->attr, &attr, var_locus)) |
1238 | return false; | |
6de9cd9a | 1239 | |
a8b3b0b6 CR |
1240 | /* Finish any work that may need to be done for the binding label, |
1241 | if it's a bind(c). The bind(c) attr is found before the symbol | |
1242 | is made, and before the symbol name (for data decls), so the | |
1243 | current_ts is holding the binding label, or nothing if the | |
1244 | name= attr wasn't given. Therefore, test here if we're dealing | |
1245 | with a bind(c) and make sure the binding label is set correctly. */ | |
1246 | if (sym->attr.is_bind_c == 1) | |
1247 | { | |
62603fae | 1248 | if (!sym->binding_label) |
a8b3b0b6 | 1249 | { |
ad4a2f64 TB |
1250 | /* Set the binding label and verify that if a NAME= was specified |
1251 | then only one identifier was in the entity-decl-list. */ | |
524af0d6 JB |
1252 | if (!set_binding_label (&sym->binding_label, sym->name, |
1253 | num_idents_on_line)) | |
1254 | return false; | |
a8b3b0b6 CR |
1255 | } |
1256 | } | |
1257 | ||
1258 | /* See if we know we're in a common block, and if it's a bind(c) | |
1259 | common then we need to make sure we're an interoperable type. */ | |
1260 | if (sym->attr.in_common == 1) | |
1261 | { | |
1262 | /* Test the common block object. */ | |
1263 | if (sym->common_block != NULL && sym->common_block->is_bind_c == 1 | |
1264 | && sym->ts.is_c_interop != 1) | |
1265 | { | |
4daa149b | 1266 | gfc_error_now ("Variable %qs in common block %qs at %C " |
a8b3b0b6 | 1267 | "must be declared with a C interoperable " |
4daa149b | 1268 | "kind since common block %qs is BIND(C)", |
a8b3b0b6 CR |
1269 | sym->name, sym->common_block->name, |
1270 | sym->common_block->name); | |
1271 | gfc_clear_error (); | |
1272 | } | |
1273 | } | |
1274 | ||
9a3db5a3 PT |
1275 | sym->attr.implied_index = 0; |
1276 | ||
528622fd | 1277 | if (sym->ts.type == BT_CLASS) |
9b6da3c7 | 1278 | return gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as); |
cf2b3c22 | 1279 | |
524af0d6 | 1280 | return true; |
6de9cd9a DN |
1281 | } |
1282 | ||
636dff67 | 1283 | |
df7cc9b5 | 1284 | /* Set character constant to the given length. The constant will be padded or |
d2848082 DK |
1285 | truncated. If we're inside an array constructor without a typespec, we |
1286 | additionally check that all elements have the same length; check_len -1 | |
1287 | means no checking. */ | |
df7cc9b5 FW |
1288 | |
1289 | void | |
d2848082 | 1290 | gfc_set_constant_character_len (int len, gfc_expr *expr, int check_len) |
df7cc9b5 | 1291 | { |
00660189 | 1292 | gfc_char_t *s; |
df7cc9b5 FW |
1293 | int slen; |
1294 | ||
1295 | gcc_assert (expr->expr_type == EXPR_CONSTANT); | |
834e9dbb SK |
1296 | |
1297 | if (expr->ts.type != BT_CHARACTER) | |
1298 | return; | |
df7cc9b5 FW |
1299 | |
1300 | slen = expr->value.character.length; | |
1301 | if (len != slen) | |
1302 | { | |
00660189 FXC |
1303 | s = gfc_get_wide_string (len + 1); |
1304 | memcpy (s, expr->value.character.string, | |
1305 | MIN (len, slen) * sizeof (gfc_char_t)); | |
df7cc9b5 | 1306 | if (len > slen) |
00660189 | 1307 | gfc_wide_memset (&s[slen], ' ', len - slen); |
2220652d | 1308 | |
a96c39ea | 1309 | if (warn_character_truncation && slen > len) |
4daa149b TB |
1310 | gfc_warning_now (OPT_Wcharacter_truncation, |
1311 | "CHARACTER expression at %L is being truncated " | |
1312 | "(%d/%d)", &expr->where, slen, len); | |
2220652d PT |
1313 | |
1314 | /* Apply the standard by 'hand' otherwise it gets cleared for | |
1315 | initializers. */ | |
d2848082 DK |
1316 | if (check_len != -1 && slen != check_len |
1317 | && !(gfc_option.allow_std & GFC_STD_GNU)) | |
2220652d PT |
1318 | gfc_error_now ("The CHARACTER elements of the array constructor " |
1319 | "at %L must have the same length (%d/%d)", | |
d2848082 | 1320 | &expr->where, slen, check_len); |
2220652d | 1321 | |
150675a8 | 1322 | s[len] = '\0'; |
cede9502 | 1323 | free (expr->value.character.string); |
df7cc9b5 FW |
1324 | expr->value.character.string = s; |
1325 | expr->value.character.length = len; | |
1326 | } | |
1327 | } | |
6de9cd9a | 1328 | |
25d8f0a2 | 1329 | |
d51347f9 | 1330 | /* Function to create and update the enumerator history |
25d8f0a2 | 1331 | using the information passed as arguments. |
d51347f9 TB |
1332 | Pointer "max_enum" is also updated, to point to |
1333 | enum history node containing largest initializer. | |
25d8f0a2 TS |
1334 | |
1335 | SYM points to the symbol node of enumerator. | |
66e4ab31 | 1336 | INIT points to its enumerator value. */ |
25d8f0a2 | 1337 | |
d51347f9 | 1338 | static void |
636dff67 | 1339 | create_enum_history (gfc_symbol *sym, gfc_expr *init) |
25d8f0a2 TS |
1340 | { |
1341 | enumerator_history *new_enum_history; | |
1342 | gcc_assert (sym != NULL && init != NULL); | |
1343 | ||
ece3f663 | 1344 | new_enum_history = XCNEW (enumerator_history); |
25d8f0a2 TS |
1345 | |
1346 | new_enum_history->sym = sym; | |
1347 | new_enum_history->initializer = init; | |
1348 | new_enum_history->next = NULL; | |
1349 | ||
1350 | if (enum_history == NULL) | |
1351 | { | |
1352 | enum_history = new_enum_history; | |
1353 | max_enum = enum_history; | |
1354 | } | |
1355 | else | |
1356 | { | |
1357 | new_enum_history->next = enum_history; | |
1358 | enum_history = new_enum_history; | |
1359 | ||
d51347f9 | 1360 | if (mpz_cmp (max_enum->initializer->value.integer, |
25d8f0a2 | 1361 | new_enum_history->initializer->value.integer) < 0) |
636dff67 | 1362 | max_enum = new_enum_history; |
25d8f0a2 TS |
1363 | } |
1364 | } | |
1365 | ||
1366 | ||
d51347f9 | 1367 | /* Function to free enum kind history. */ |
25d8f0a2 | 1368 | |
d51347f9 | 1369 | void |
636dff67 | 1370 | gfc_free_enum_history (void) |
25d8f0a2 | 1371 | { |
d51347f9 TB |
1372 | enumerator_history *current = enum_history; |
1373 | enumerator_history *next; | |
25d8f0a2 TS |
1374 | |
1375 | while (current != NULL) | |
1376 | { | |
1377 | next = current->next; | |
cede9502 | 1378 | free (current); |
25d8f0a2 TS |
1379 | current = next; |
1380 | } | |
1381 | max_enum = NULL; | |
1382 | enum_history = NULL; | |
1383 | } | |
1384 | ||
1385 | ||
6de9cd9a DN |
1386 | /* Function called by variable_decl() that adds an initialization |
1387 | expression to a symbol. */ | |
1388 | ||
524af0d6 | 1389 | static bool |
66e4ab31 | 1390 | add_init_expr_to_sym (const char *name, gfc_expr **initp, locus *var_locus) |
6de9cd9a DN |
1391 | { |
1392 | symbol_attribute attr; | |
1393 | gfc_symbol *sym; | |
1394 | gfc_expr *init; | |
1395 | ||
1396 | init = *initp; | |
08a6b8e0 | 1397 | if (find_special (name, &sym, false)) |
524af0d6 | 1398 | return false; |
6de9cd9a DN |
1399 | |
1400 | attr = sym->attr; | |
1401 | ||
1402 | /* If this symbol is confirming an implicit parameter type, | |
1403 | then an initialization expression is not allowed. */ | |
1404 | if (attr.flavor == FL_PARAMETER | |
1405 | && sym->value != NULL | |
1406 | && *initp != NULL) | |
1407 | { | |
c4100eae | 1408 | gfc_error ("Initializer not allowed for PARAMETER %qs at %C", |
6de9cd9a | 1409 | sym->name); |
524af0d6 | 1410 | return false; |
6de9cd9a DN |
1411 | } |
1412 | ||
1413 | if (init == NULL) | |
1414 | { | |
1415 | /* An initializer is required for PARAMETER declarations. */ | |
1416 | if (attr.flavor == FL_PARAMETER) | |
1417 | { | |
1418 | gfc_error ("PARAMETER at %L is missing an initializer", var_locus); | |
524af0d6 | 1419 | return false; |
6de9cd9a DN |
1420 | } |
1421 | } | |
1422 | else | |
1423 | { | |
1424 | /* If a variable appears in a DATA block, it cannot have an | |
1de8a836 | 1425 | initializer. */ |
6de9cd9a DN |
1426 | if (sym->attr.data) |
1427 | { | |
c4100eae | 1428 | gfc_error ("Variable %qs at %C with an initializer already " |
636dff67 | 1429 | "appears in a DATA statement", sym->name); |
524af0d6 | 1430 | return false; |
6de9cd9a DN |
1431 | } |
1432 | ||
75d17889 | 1433 | /* Check if the assignment can happen. This has to be put off |
80f95228 | 1434 | until later for derived type variables and procedure pointers. */ |
6de9cd9a | 1435 | if (sym->ts.type != BT_DERIVED && init->ts.type != BT_DERIVED |
cf2b3c22 | 1436 | && sym->ts.type != BT_CLASS && init->ts.type != BT_CLASS |
f5acf0f2 | 1437 | && !sym->attr.proc_pointer |
524af0d6 JB |
1438 | && !gfc_check_assign_symbol (sym, NULL, init)) |
1439 | return false; | |
6de9cd9a | 1440 | |
bc21d315 | 1441 | if (sym->ts.type == BT_CHARACTER && sym->ts.u.cl |
51b128a0 | 1442 | && init->ts.type == BT_CHARACTER) |
df7cc9b5 FW |
1443 | { |
1444 | /* Update symbol character length according initializer. */ | |
524af0d6 JB |
1445 | if (!gfc_check_assign_symbol (sym, NULL, init)) |
1446 | return false; | |
51b128a0 | 1447 | |
bc21d315 | 1448 | if (sym->ts.u.cl->length == NULL) |
df7cc9b5 | 1449 | { |
a99288e5 | 1450 | int clen; |
66e4ab31 SK |
1451 | /* If there are multiple CHARACTER variables declared on the |
1452 | same line, we don't want them to share the same length. */ | |
b76e28c6 | 1453 | sym->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
96f4873b | 1454 | |
a99288e5 PT |
1455 | if (sym->attr.flavor == FL_PARAMETER) |
1456 | { | |
1457 | if (init->expr_type == EXPR_CONSTANT) | |
1458 | { | |
1459 | clen = init->value.character.length; | |
b7e75771 JD |
1460 | sym->ts.u.cl->length |
1461 | = gfc_get_int_expr (gfc_default_integer_kind, | |
1462 | NULL, clen); | |
a99288e5 PT |
1463 | } |
1464 | else if (init->expr_type == EXPR_ARRAY) | |
1465 | { | |
dc0f176a SK |
1466 | if (init->ts.u.cl) |
1467 | clen = mpz_get_si (init->ts.u.cl->length->value.integer); | |
1468 | else if (init->value.constructor) | |
1469 | { | |
1470 | gfc_constructor *c; | |
1471 | c = gfc_constructor_first (init->value.constructor); | |
1472 | clen = c->expr->value.character.length; | |
1473 | } | |
1474 | else | |
1475 | gcc_unreachable (); | |
b7e75771 JD |
1476 | sym->ts.u.cl->length |
1477 | = gfc_get_int_expr (gfc_default_integer_kind, | |
1478 | NULL, clen); | |
a99288e5 | 1479 | } |
bc21d315 JW |
1480 | else if (init->ts.u.cl && init->ts.u.cl->length) |
1481 | sym->ts.u.cl->length = | |
1482 | gfc_copy_expr (sym->value->ts.u.cl->length); | |
a99288e5 | 1483 | } |
df7cc9b5 FW |
1484 | } |
1485 | /* Update initializer character length according symbol. */ | |
bc21d315 | 1486 | else if (sym->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
df7cc9b5 | 1487 | { |
d30ecc9c SK |
1488 | int len; |
1489 | ||
1490 | if (!gfc_specification_expr (sym->ts.u.cl->length)) | |
1491 | return false; | |
1492 | ||
1493 | len = mpz_get_si (sym->ts.u.cl->length->value.integer); | |
df7cc9b5 FW |
1494 | |
1495 | if (init->expr_type == EXPR_CONSTANT) | |
d2848082 | 1496 | gfc_set_constant_character_len (len, init, -1); |
df7cc9b5 FW |
1497 | else if (init->expr_type == EXPR_ARRAY) |
1498 | { | |
b7e75771 JD |
1499 | gfc_constructor *c; |
1500 | ||
dcdc7b6c PT |
1501 | /* Build a new charlen to prevent simplification from |
1502 | deleting the length before it is resolved. */ | |
b76e28c6 | 1503 | init->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
bc21d315 | 1504 | init->ts.u.cl->length = gfc_copy_expr (sym->ts.u.cl->length); |
dcdc7b6c | 1505 | |
b7e75771 JD |
1506 | for (c = gfc_constructor_first (init->value.constructor); |
1507 | c; c = gfc_constructor_next (c)) | |
1508 | gfc_set_constant_character_len (len, c->expr, -1); | |
df7cc9b5 FW |
1509 | } |
1510 | } | |
1511 | } | |
1512 | ||
f5ca06e6 DK |
1513 | /* If sym is implied-shape, set its upper bounds from init. */ |
1514 | if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension | |
1515 | && sym->as->type == AS_IMPLIED_SHAPE) | |
1516 | { | |
1517 | int dim; | |
1518 | ||
1519 | if (init->rank == 0) | |
1520 | { | |
1521 | gfc_error ("Can't initialize implied-shape array at %L" | |
1522 | " with scalar", &sym->declared_at); | |
524af0d6 | 1523 | return false; |
f5ca06e6 | 1524 | } |
f5ca06e6 DK |
1525 | |
1526 | /* Shape should be present, we get an initialization expression. */ | |
1527 | gcc_assert (init->shape); | |
1528 | ||
1529 | for (dim = 0; dim < sym->as->rank; ++dim) | |
1530 | { | |
1531 | int k; | |
cdffe788 | 1532 | gfc_expr *e, *lower; |
f5acf0f2 | 1533 | |
f5ca06e6 | 1534 | lower = sym->as->lower[dim]; |
cdffe788 SK |
1535 | |
1536 | /* If the lower bound is an array element from another | |
1537 | parameterized array, then it is marked with EXPR_VARIABLE and | |
1538 | is an initialization expression. Try to reduce it. */ | |
1539 | if (lower->expr_type == EXPR_VARIABLE) | |
1540 | gfc_reduce_init_expr (lower); | |
1541 | ||
1542 | if (lower->expr_type == EXPR_CONSTANT) | |
1543 | { | |
1544 | /* All dimensions must be without upper bound. */ | |
1545 | gcc_assert (!sym->as->upper[dim]); | |
1546 | ||
1547 | k = lower->ts.kind; | |
1548 | e = gfc_get_constant_expr (BT_INTEGER, k, &sym->declared_at); | |
1549 | mpz_add (e->value.integer, lower->value.integer, | |
1550 | init->shape[dim]); | |
1551 | mpz_sub_ui (e->value.integer, e->value.integer, 1); | |
1552 | sym->as->upper[dim] = e; | |
1553 | } | |
1554 | else | |
f5ca06e6 DK |
1555 | { |
1556 | gfc_error ("Non-constant lower bound in implied-shape" | |
1557 | " declaration at %L", &lower->where); | |
524af0d6 | 1558 | return false; |
f5ca06e6 | 1559 | } |
f5ca06e6 DK |
1560 | } |
1561 | ||
1562 | sym->as->type = AS_EXPLICIT; | |
1563 | } | |
1564 | ||
a8b3b0b6 CR |
1565 | /* Need to check if the expression we initialized this |
1566 | to was one of the iso_c_binding named constants. If so, | |
1567 | and we're a parameter (constant), let it be iso_c. | |
1568 | For example: | |
1569 | integer(c_int), parameter :: my_int = c_int | |
1570 | integer(my_int) :: my_int_2 | |
1571 | If we mark my_int as iso_c (since we can see it's value | |
1572 | is equal to one of the named constants), then my_int_2 | |
1573 | will be considered C interoperable. */ | |
1574 | if (sym->ts.type != BT_CHARACTER && sym->ts.type != BT_DERIVED) | |
1575 | { | |
1576 | sym->ts.is_iso_c |= init->ts.is_iso_c; | |
1577 | sym->ts.is_c_interop |= init->ts.is_c_interop; | |
1578 | /* attr bits needed for module files. */ | |
1579 | sym->attr.is_iso_c |= init->ts.is_iso_c; | |
1580 | sym->attr.is_c_interop |= init->ts.is_c_interop; | |
1581 | if (init->ts.is_iso_c) | |
1582 | sym->ts.f90_type = init->ts.f90_type; | |
1583 | } | |
b7e75771 | 1584 | |
6de9cd9a DN |
1585 | /* Add initializer. Make sure we keep the ranks sane. */ |
1586 | if (sym->attr.dimension && init->rank == 0) | |
a9b43781 PT |
1587 | { |
1588 | mpz_t size; | |
1589 | gfc_expr *array; | |
a9b43781 PT |
1590 | int n; |
1591 | if (sym->attr.flavor == FL_PARAMETER | |
1592 | && init->expr_type == EXPR_CONSTANT | |
524af0d6 | 1593 | && spec_size (sym->as, &size) |
a9b43781 PT |
1594 | && mpz_cmp_si (size, 0) > 0) |
1595 | { | |
b7e75771 JD |
1596 | array = gfc_get_array_expr (init->ts.type, init->ts.kind, |
1597 | &init->where); | |
a9b43781 | 1598 | for (n = 0; n < (int)mpz_get_si (size); n++) |
b7e75771 JD |
1599 | gfc_constructor_append_expr (&array->value.constructor, |
1600 | n == 0 | |
1601 | ? init | |
1602 | : gfc_copy_expr (init), | |
1603 | &init->where); | |
f5acf0f2 | 1604 | |
a9b43781 PT |
1605 | array->shape = gfc_get_shape (sym->as->rank); |
1606 | for (n = 0; n < sym->as->rank; n++) | |
1607 | spec_dimen_size (sym->as, n, &array->shape[n]); | |
1608 | ||
1609 | init = array; | |
1610 | mpz_clear (size); | |
1611 | } | |
1612 | init->rank = sym->as->rank; | |
1613 | } | |
6de9cd9a DN |
1614 | |
1615 | sym->value = init; | |
ef7236d2 DF |
1616 | if (sym->attr.save == SAVE_NONE) |
1617 | sym->attr.save = SAVE_IMPLICIT; | |
6de9cd9a DN |
1618 | *initp = NULL; |
1619 | } | |
1620 | ||
524af0d6 | 1621 | return true; |
6de9cd9a DN |
1622 | } |
1623 | ||
1624 | ||
1625 | /* Function called by variable_decl() that adds a name to a structure | |
1626 | being built. */ | |
1627 | ||
524af0d6 | 1628 | static bool |
636dff67 SK |
1629 | build_struct (const char *name, gfc_charlen *cl, gfc_expr **init, |
1630 | gfc_array_spec **as) | |
6de9cd9a DN |
1631 | { |
1632 | gfc_component *c; | |
524af0d6 | 1633 | bool t = true; |
6de9cd9a | 1634 | |
619dd721 | 1635 | /* F03:C438/C439. If the current symbol is of the same derived type that we're |
6de9cd9a | 1636 | constructing, it must have the pointer attribute. */ |
619dd721 | 1637 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
bc21d315 | 1638 | && current_ts.u.derived == gfc_current_block () |
6de9cd9a DN |
1639 | && current_attr.pointer == 0) |
1640 | { | |
1641 | gfc_error ("Component at %C must have the POINTER attribute"); | |
524af0d6 | 1642 | return false; |
6de9cd9a DN |
1643 | } |
1644 | ||
636dff67 | 1645 | if (gfc_current_block ()->attr.pointer && (*as)->rank != 0) |
6de9cd9a DN |
1646 | { |
1647 | if ((*as)->type != AS_DEFERRED && (*as)->type != AS_EXPLICIT) | |
1648 | { | |
1649 | gfc_error ("Array component of structure at %C must have explicit " | |
1650 | "or deferred shape"); | |
524af0d6 | 1651 | return false; |
6de9cd9a DN |
1652 | } |
1653 | } | |
1654 | ||
524af0d6 JB |
1655 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
1656 | return false; | |
6de9cd9a DN |
1657 | |
1658 | c->ts = current_ts; | |
bc21d315 JW |
1659 | if (c->ts.type == BT_CHARACTER) |
1660 | c->ts.u.cl = cl; | |
d4b7d0f0 | 1661 | c->attr = current_attr; |
6de9cd9a DN |
1662 | |
1663 | c->initializer = *init; | |
1664 | *init = NULL; | |
1665 | ||
1666 | c->as = *as; | |
1667 | if (c->as != NULL) | |
be59db2d TB |
1668 | { |
1669 | if (c->as->corank) | |
1670 | c->attr.codimension = 1; | |
1671 | if (c->as->rank) | |
1672 | c->attr.dimension = 1; | |
1673 | } | |
6de9cd9a DN |
1674 | *as = NULL; |
1675 | ||
28d08315 PT |
1676 | /* Should this ever get more complicated, combine with similar section |
1677 | in add_init_expr_to_sym into a separate function. */ | |
f4347334 ZG |
1678 | if (c->ts.type == BT_CHARACTER && !c->attr.pointer && c->initializer |
1679 | && c->ts.u.cl | |
bc21d315 | 1680 | && c->ts.u.cl->length && c->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
28d08315 | 1681 | { |
d2848082 DK |
1682 | int len; |
1683 | ||
bc21d315 JW |
1684 | gcc_assert (c->ts.u.cl && c->ts.u.cl->length); |
1685 | gcc_assert (c->ts.u.cl->length->expr_type == EXPR_CONSTANT); | |
1686 | gcc_assert (c->ts.u.cl->length->ts.type == BT_INTEGER); | |
d2848082 | 1687 | |
bc21d315 | 1688 | len = mpz_get_si (c->ts.u.cl->length->value.integer); |
28d08315 PT |
1689 | |
1690 | if (c->initializer->expr_type == EXPR_CONSTANT) | |
d2848082 | 1691 | gfc_set_constant_character_len (len, c->initializer, -1); |
bc21d315 JW |
1692 | else if (mpz_cmp (c->ts.u.cl->length->value.integer, |
1693 | c->initializer->ts.u.cl->length->value.integer)) | |
28d08315 | 1694 | { |
b7e75771 JD |
1695 | gfc_constructor *ctor; |
1696 | ctor = gfc_constructor_first (c->initializer->value.constructor); | |
d2848082 | 1697 | |
2f4d1994 | 1698 | if (ctor) |
d2848082 | 1699 | { |
2f4d1994 | 1700 | int first_len; |
b7e75771 JD |
1701 | bool has_ts = (c->initializer->ts.u.cl |
1702 | && c->initializer->ts.u.cl->length_from_typespec); | |
2f4d1994 ILT |
1703 | |
1704 | /* Remember the length of the first element for checking | |
1705 | that all elements *in the constructor* have the same | |
1706 | length. This need not be the length of the LHS! */ | |
1707 | gcc_assert (ctor->expr->expr_type == EXPR_CONSTANT); | |
1708 | gcc_assert (ctor->expr->ts.type == BT_CHARACTER); | |
1709 | first_len = ctor->expr->value.character.length; | |
1710 | ||
b7e75771 JD |
1711 | for ( ; ctor; ctor = gfc_constructor_next (ctor)) |
1712 | if (ctor->expr->expr_type == EXPR_CONSTANT) | |
d2848082 | 1713 | { |
b7e75771 JD |
1714 | gfc_set_constant_character_len (len, ctor->expr, |
1715 | has_ts ? -1 : first_len); | |
1716 | ctor->expr->ts.u.cl->length = gfc_copy_expr (c->ts.u.cl->length); | |
d2848082 | 1717 | } |
d2848082 | 1718 | } |
28d08315 PT |
1719 | } |
1720 | } | |
1721 | ||
6de9cd9a | 1722 | /* Check array components. */ |
d4b7d0f0 | 1723 | if (!c->attr.dimension) |
2e23972e | 1724 | goto scalar; |
6de9cd9a | 1725 | |
d4b7d0f0 | 1726 | if (c->attr.pointer) |
6de9cd9a DN |
1727 | { |
1728 | if (c->as->type != AS_DEFERRED) | |
1729 | { | |
5046aff5 PT |
1730 | gfc_error ("Pointer array component of structure at %C must have a " |
1731 | "deferred shape"); | |
524af0d6 | 1732 | t = false; |
5046aff5 PT |
1733 | } |
1734 | } | |
d4b7d0f0 | 1735 | else if (c->attr.allocatable) |
5046aff5 PT |
1736 | { |
1737 | if (c->as->type != AS_DEFERRED) | |
1738 | { | |
1739 | gfc_error ("Allocatable component of structure at %C must have a " | |
1740 | "deferred shape"); | |
524af0d6 | 1741 | t = false; |
6de9cd9a DN |
1742 | } |
1743 | } | |
1744 | else | |
1745 | { | |
1746 | if (c->as->type != AS_EXPLICIT) | |
1747 | { | |
636dff67 SK |
1748 | gfc_error ("Array component of structure at %C must have an " |
1749 | "explicit shape"); | |
524af0d6 | 1750 | t = false; |
6de9cd9a DN |
1751 | } |
1752 | } | |
1753 | ||
2e23972e JW |
1754 | scalar: |
1755 | if (c->ts.type == BT_CLASS) | |
17643884 | 1756 | { |
9b6da3c7 | 1757 | bool t2 = gfc_build_class_symbol (&c->ts, &c->attr, &c->as); |
ea59b186 | 1758 | |
524af0d6 | 1759 | if (t) |
ea59b186 | 1760 | t = t2; |
17643884 JW |
1761 | } |
1762 | ||
2e23972e | 1763 | return t; |
6de9cd9a DN |
1764 | } |
1765 | ||
1766 | ||
1767 | /* Match a 'NULL()', and possibly take care of some side effects. */ | |
1768 | ||
1769 | match | |
636dff67 | 1770 | gfc_match_null (gfc_expr **result) |
6de9cd9a DN |
1771 | { |
1772 | gfc_symbol *sym; | |
576f6da6 | 1773 | match m, m2 = MATCH_NO; |
6de9cd9a | 1774 | |
576f6da6 TB |
1775 | if ((m = gfc_match (" null ( )")) == MATCH_ERROR) |
1776 | return MATCH_ERROR; | |
1777 | ||
1778 | if (m == MATCH_NO) | |
1779 | { | |
1780 | locus old_loc; | |
1781 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
1782 | ||
94241120 | 1783 | if ((m2 = gfc_match (" null (")) != MATCH_YES) |
576f6da6 TB |
1784 | return m2; |
1785 | ||
1786 | old_loc = gfc_current_locus; | |
1787 | if ((m2 = gfc_match (" %n ) ", name)) == MATCH_ERROR) | |
1788 | return MATCH_ERROR; | |
1789 | if (m2 != MATCH_YES | |
1790 | && ((m2 = gfc_match (" mold = %n )", name)) == MATCH_ERROR)) | |
1791 | return MATCH_ERROR; | |
1792 | if (m2 == MATCH_NO) | |
1793 | { | |
1794 | gfc_current_locus = old_loc; | |
1795 | return MATCH_NO; | |
1796 | } | |
1797 | } | |
6de9cd9a DN |
1798 | |
1799 | /* The NULL symbol now has to be/become an intrinsic function. */ | |
1800 | if (gfc_get_symbol ("null", NULL, &sym)) | |
1801 | { | |
1802 | gfc_error ("NULL() initialization at %C is ambiguous"); | |
1803 | return MATCH_ERROR; | |
1804 | } | |
1805 | ||
1806 | gfc_intrinsic_symbol (sym); | |
1807 | ||
1808 | if (sym->attr.proc != PROC_INTRINSIC | |
07416986 | 1809 | && !(sym->attr.use_assoc && sym->attr.intrinsic) |
524af0d6 JB |
1810 | && (!gfc_add_procedure(&sym->attr, PROC_INTRINSIC, sym->name, NULL) |
1811 | || !gfc_add_function (&sym->attr, sym->name, NULL))) | |
6de9cd9a DN |
1812 | return MATCH_ERROR; |
1813 | ||
b7e75771 | 1814 | *result = gfc_get_null_expr (&gfc_current_locus); |
6de9cd9a | 1815 | |
576f6da6 TB |
1816 | /* Invalid per F2008, C512. */ |
1817 | if (m2 == MATCH_YES) | |
1818 | { | |
1819 | gfc_error ("NULL() initialization at %C may not have MOLD"); | |
1820 | return MATCH_ERROR; | |
1821 | } | |
1822 | ||
6de9cd9a DN |
1823 | return MATCH_YES; |
1824 | } | |
1825 | ||
1826 | ||
80f95228 JW |
1827 | /* Match the initialization expr for a data pointer or procedure pointer. */ |
1828 | ||
1829 | static match | |
1830 | match_pointer_init (gfc_expr **init, int procptr) | |
1831 | { | |
1832 | match m; | |
1833 | ||
1834 | if (gfc_pure (NULL) && gfc_state_stack->state != COMP_DERIVED) | |
1835 | { | |
1836 | gfc_error ("Initialization of pointer at %C is not allowed in " | |
1837 | "a PURE procedure"); | |
1838 | return MATCH_ERROR; | |
1839 | } | |
ccd7751b | 1840 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
80f95228 | 1841 | |
eea58adb | 1842 | /* Match NULL() initialization. */ |
80f95228 JW |
1843 | m = gfc_match_null (init); |
1844 | if (m != MATCH_NO) | |
1845 | return m; | |
1846 | ||
1847 | /* Match non-NULL initialization. */ | |
837c4b78 | 1848 | gfc_matching_ptr_assignment = !procptr; |
80f95228 JW |
1849 | gfc_matching_procptr_assignment = procptr; |
1850 | m = gfc_match_rvalue (init); | |
837c4b78 | 1851 | gfc_matching_ptr_assignment = 0; |
80f95228 JW |
1852 | gfc_matching_procptr_assignment = 0; |
1853 | if (m == MATCH_ERROR) | |
1854 | return MATCH_ERROR; | |
1855 | else if (m == MATCH_NO) | |
1856 | { | |
1857 | gfc_error ("Error in pointer initialization at %C"); | |
1858 | return MATCH_ERROR; | |
1859 | } | |
1860 | ||
dc9a54fa JW |
1861 | if (!procptr && !gfc_resolve_expr (*init)) |
1862 | return MATCH_ERROR; | |
f5acf0f2 | 1863 | |
524af0d6 JB |
1864 | if (!gfc_notify_std (GFC_STD_F2008, "non-NULL pointer " |
1865 | "initialization at %C")) | |
80f95228 JW |
1866 | return MATCH_ERROR; |
1867 | ||
1868 | return MATCH_YES; | |
1869 | } | |
1870 | ||
1871 | ||
524af0d6 | 1872 | static bool |
bb9de0c4 JW |
1873 | check_function_name (char *name) |
1874 | { | |
1875 | /* In functions that have a RESULT variable defined, the function name always | |
1876 | refers to function calls. Therefore, the name is not allowed to appear in | |
1877 | specification statements. When checking this, be careful about | |
1878 | 'hidden' procedure pointer results ('ppr@'). */ | |
1879 | ||
1880 | if (gfc_current_state () == COMP_FUNCTION) | |
1881 | { | |
1882 | gfc_symbol *block = gfc_current_block (); | |
1883 | if (block && block->result && block->result != block | |
1884 | && strcmp (block->result->name, "ppr@") != 0 | |
1885 | && strcmp (block->name, name) == 0) | |
1886 | { | |
c4100eae | 1887 | gfc_error ("Function name %qs not allowed at %C", name); |
524af0d6 | 1888 | return false; |
bb9de0c4 JW |
1889 | } |
1890 | } | |
1891 | ||
524af0d6 | 1892 | return true; |
bb9de0c4 JW |
1893 | } |
1894 | ||
1895 | ||
6de9cd9a DN |
1896 | /* Match a variable name with an optional initializer. When this |
1897 | subroutine is called, a variable is expected to be parsed next. | |
1898 | Depending on what is happening at the moment, updates either the | |
1899 | symbol table or the current interface. */ | |
1900 | ||
1901 | static match | |
949d5b72 | 1902 | variable_decl (int elem) |
6de9cd9a DN |
1903 | { |
1904 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
1905 | gfc_expr *initializer, *char_len; | |
1906 | gfc_array_spec *as; | |
83d890b9 | 1907 | gfc_array_spec *cp_as; /* Extra copy for Cray Pointees. */ |
6de9cd9a | 1908 | gfc_charlen *cl; |
e69afb29 | 1909 | bool cl_deferred; |
6de9cd9a DN |
1910 | locus var_locus; |
1911 | match m; | |
524af0d6 | 1912 | bool t; |
83d890b9 | 1913 | gfc_symbol *sym; |
6de9cd9a DN |
1914 | |
1915 | initializer = NULL; | |
1916 | as = NULL; | |
83d890b9 | 1917 | cp_as = NULL; |
6de9cd9a DN |
1918 | |
1919 | /* When we get here, we've just matched a list of attributes and | |
1920 | maybe a type and a double colon. The next thing we expect to see | |
1921 | is the name of the symbol. */ | |
1922 | m = gfc_match_name (name); | |
1923 | if (m != MATCH_YES) | |
1924 | goto cleanup; | |
1925 | ||
63645982 | 1926 | var_locus = gfc_current_locus; |
6de9cd9a DN |
1927 | |
1928 | /* Now we could see the optional array spec. or character length. */ | |
be59db2d | 1929 | m = gfc_match_array_spec (&as, true, true); |
11126dc0 | 1930 | if (m == MATCH_ERROR) |
6de9cd9a | 1931 | goto cleanup; |
25d8f0a2 | 1932 | |
6de9cd9a DN |
1933 | if (m == MATCH_NO) |
1934 | as = gfc_copy_array_spec (current_as); | |
63fbf586 | 1935 | else if (current_as |
524af0d6 | 1936 | && !merge_array_spec (current_as, as, true)) |
63fbf586 TB |
1937 | { |
1938 | m = MATCH_ERROR; | |
1939 | goto cleanup; | |
1940 | } | |
6de9cd9a | 1941 | |
c61819ff | 1942 | if (flag_cray_pointer) |
11126dc0 AL |
1943 | cp_as = gfc_copy_array_spec (as); |
1944 | ||
f5ca06e6 DK |
1945 | /* At this point, we know for sure if the symbol is PARAMETER and can thus |
1946 | determine (and check) whether it can be implied-shape. If it | |
1947 | was parsed as assumed-size, change it because PARAMETERs can not | |
1948 | be assumed-size. */ | |
1949 | if (as) | |
1950 | { | |
1951 | if (as->type == AS_IMPLIED_SHAPE && current_attr.flavor != FL_PARAMETER) | |
1952 | { | |
1953 | m = MATCH_ERROR; | |
c4100eae | 1954 | gfc_error ("Non-PARAMETER symbol %qs at %L can't be implied-shape", |
f5ca06e6 DK |
1955 | name, &var_locus); |
1956 | goto cleanup; | |
1957 | } | |
1958 | ||
1959 | if (as->type == AS_ASSUMED_SIZE && as->rank == 1 | |
1960 | && current_attr.flavor == FL_PARAMETER) | |
1961 | as->type = AS_IMPLIED_SHAPE; | |
1962 | ||
1963 | if (as->type == AS_IMPLIED_SHAPE | |
524af0d6 JB |
1964 | && !gfc_notify_std (GFC_STD_F2008, "Implied-shape array at %L", |
1965 | &var_locus)) | |
f5ca06e6 DK |
1966 | { |
1967 | m = MATCH_ERROR; | |
1968 | goto cleanup; | |
1969 | } | |
1970 | } | |
1971 | ||
6de9cd9a DN |
1972 | char_len = NULL; |
1973 | cl = NULL; | |
e69afb29 | 1974 | cl_deferred = false; |
6de9cd9a DN |
1975 | |
1976 | if (current_ts.type == BT_CHARACTER) | |
1977 | { | |
2767f2cc | 1978 | switch (match_char_length (&char_len, &cl_deferred, false)) |
6de9cd9a DN |
1979 | { |
1980 | case MATCH_YES: | |
b76e28c6 | 1981 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
1982 | |
1983 | cl->length = char_len; | |
1984 | break; | |
1985 | ||
949d5b72 | 1986 | /* Non-constant lengths need to be copied after the first |
9b21a380 | 1987 | element. Also copy assumed lengths. */ |
6de9cd9a | 1988 | case MATCH_NO: |
9b21a380 | 1989 | if (elem > 1 |
bc21d315 JW |
1990 | && (current_ts.u.cl->length == NULL |
1991 | || current_ts.u.cl->length->expr_type != EXPR_CONSTANT)) | |
949d5b72 | 1992 | { |
b76e28c6 | 1993 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
bc21d315 | 1994 | cl->length = gfc_copy_expr (current_ts.u.cl->length); |
949d5b72 PT |
1995 | } |
1996 | else | |
bc21d315 | 1997 | cl = current_ts.u.cl; |
949d5b72 | 1998 | |
e69afb29 SK |
1999 | cl_deferred = current_ts.deferred; |
2000 | ||
6de9cd9a DN |
2001 | break; |
2002 | ||
2003 | case MATCH_ERROR: | |
2004 | goto cleanup; | |
2005 | } | |
2006 | } | |
2007 | ||
4668d6f9 PT |
2008 | /* The dummy arguments and result of the abreviated form of MODULE |
2009 | PROCEDUREs, used in SUBMODULES should not be redefined. */ | |
2010 | if (gfc_current_ns->proc_name | |
2011 | && gfc_current_ns->proc_name->abr_modproc_decl) | |
2012 | { | |
2013 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2014 | if (sym != NULL && (sym->attr.dummy || sym->attr.result)) | |
2015 | { | |
2016 | m = MATCH_ERROR; | |
2017 | gfc_error ("'%s' at %C is a redefinition of the declaration " | |
2018 | "in the corresponding interface for MODULE " | |
2019 | "PROCEDURE '%s'", sym->name, | |
2020 | gfc_current_ns->proc_name->name); | |
2021 | goto cleanup; | |
2022 | } | |
2023 | } | |
2024 | ||
83d890b9 | 2025 | /* If this symbol has already shown up in a Cray Pointer declaration, |
88f7d6fb | 2026 | and this is not a component declaration, |
66e4ab31 | 2027 | then we want to set the type & bail out. */ |
c61819ff | 2028 | if (flag_cray_pointer && gfc_current_state () != COMP_DERIVED) |
83d890b9 AL |
2029 | { |
2030 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2031 | if (sym != NULL && sym->attr.cray_pointee) | |
2032 | { | |
2033 | sym->ts.type = current_ts.type; | |
2034 | sym->ts.kind = current_ts.kind; | |
bc21d315 JW |
2035 | sym->ts.u.cl = cl; |
2036 | sym->ts.u.derived = current_ts.u.derived; | |
a8b3b0b6 CR |
2037 | sym->ts.is_c_interop = current_ts.is_c_interop; |
2038 | sym->ts.is_iso_c = current_ts.is_iso_c; | |
83d890b9 | 2039 | m = MATCH_YES; |
f5acf0f2 | 2040 | |
83d890b9 AL |
2041 | /* Check to see if we have an array specification. */ |
2042 | if (cp_as != NULL) | |
2043 | { | |
2044 | if (sym->as != NULL) | |
2045 | { | |
e25a0da3 | 2046 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
2047 | gfc_free_array_spec (cp_as); |
2048 | m = MATCH_ERROR; | |
2049 | goto cleanup; | |
2050 | } | |
2051 | else | |
2052 | { | |
524af0d6 | 2053 | if (!gfc_set_array_spec (sym, cp_as, &var_locus)) |
83d890b9 | 2054 | gfc_internal_error ("Couldn't set pointee array spec."); |
d51347f9 | 2055 | |
83d890b9 | 2056 | /* Fix the array spec. */ |
d51347f9 | 2057 | m = gfc_mod_pointee_as (sym->as); |
83d890b9 AL |
2058 | if (m == MATCH_ERROR) |
2059 | goto cleanup; | |
2060 | } | |
d51347f9 | 2061 | } |
83d890b9 AL |
2062 | goto cleanup; |
2063 | } | |
2064 | else | |
2065 | { | |
2066 | gfc_free_array_spec (cp_as); | |
2067 | } | |
2068 | } | |
d51347f9 | 2069 | |
3070bab4 JW |
2070 | /* Procedure pointer as function result. */ |
2071 | if (gfc_current_state () == COMP_FUNCTION | |
2072 | && strcmp ("ppr@", gfc_current_block ()->name) == 0 | |
2073 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) == 0) | |
2074 | strcpy (name, "ppr@"); | |
2075 | ||
2076 | if (gfc_current_state () == COMP_FUNCTION | |
2077 | && strcmp (name, gfc_current_block ()->name) == 0 | |
2078 | && gfc_current_block ()->result | |
2079 | && strcmp ("ppr@", gfc_current_block ()->result->name) == 0) | |
2080 | strcpy (name, "ppr@"); | |
d51347f9 | 2081 | |
6de9cd9a DN |
2082 | /* OK, we've successfully matched the declaration. Now put the |
2083 | symbol in the current namespace, because it might be used in the | |
69de3b83 | 2084 | optional initialization expression for this symbol, e.g. this is |
6de9cd9a DN |
2085 | perfectly legal: |
2086 | ||
2087 | integer, parameter :: i = huge(i) | |
2088 | ||
2089 | This is only true for parameters or variables of a basic type. | |
2090 | For components of derived types, it is not true, so we don't | |
2091 | create a symbol for those yet. If we fail to create the symbol, | |
2092 | bail out. */ | |
2093 | if (gfc_current_state () != COMP_DERIVED | |
524af0d6 | 2094 | && !build_sym (name, cl, cl_deferred, &as, &var_locus)) |
6de9cd9a | 2095 | { |
72af9f0b PT |
2096 | m = MATCH_ERROR; |
2097 | goto cleanup; | |
2098 | } | |
2099 | ||
524af0d6 | 2100 | if (!check_function_name (name)) |
6de9cd9a | 2101 | { |
6de9cd9a DN |
2102 | m = MATCH_ERROR; |
2103 | goto cleanup; | |
2104 | } | |
2105 | ||
294fbfc8 TS |
2106 | /* We allow old-style initializations of the form |
2107 | integer i /2/, j(4) /3*3, 1/ | |
2108 | (if no colon has been seen). These are different from data | |
2109 | statements in that initializers are only allowed to apply to the | |
2110 | variable immediately preceding, i.e. | |
2111 | integer i, j /1, 2/ | |
2112 | is not allowed. Therefore we have to do some work manually, that | |
75d17889 | 2113 | could otherwise be left to the matchers for DATA statements. */ |
294fbfc8 TS |
2114 | |
2115 | if (!colon_seen && gfc_match (" /") == MATCH_YES) | |
2116 | { | |
524af0d6 JB |
2117 | if (!gfc_notify_std (GFC_STD_GNU, "Old-style " |
2118 | "initialization at %C")) | |
294fbfc8 | 2119 | return MATCH_ERROR; |
b18f1efc JJ |
2120 | else if (gfc_current_state () == COMP_DERIVED) |
2121 | { | |
2122 | gfc_error ("Invalid old style initialization for derived type " | |
2123 | "component at %C"); | |
2124 | m = MATCH_ERROR; | |
2125 | goto cleanup; | |
2126 | } | |
f5acf0f2 | 2127 | |
294fbfc8 TS |
2128 | return match_old_style_init (name); |
2129 | } | |
2130 | ||
6de9cd9a DN |
2131 | /* The double colon must be present in order to have initializers. |
2132 | Otherwise the statement is ambiguous with an assignment statement. */ | |
2133 | if (colon_seen) | |
2134 | { | |
2135 | if (gfc_match (" =>") == MATCH_YES) | |
2136 | { | |
6de9cd9a DN |
2137 | if (!current_attr.pointer) |
2138 | { | |
2139 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
2140 | m = MATCH_ERROR; | |
2141 | goto cleanup; | |
2142 | } | |
2143 | ||
80f95228 | 2144 | m = match_pointer_init (&initializer, 0); |
6de9cd9a DN |
2145 | if (m != MATCH_YES) |
2146 | goto cleanup; | |
6de9cd9a DN |
2147 | } |
2148 | else if (gfc_match_char ('=') == MATCH_YES) | |
2149 | { | |
2150 | if (current_attr.pointer) | |
2151 | { | |
a4d9b221 TB |
2152 | gfc_error ("Pointer initialization at %C requires %<=>%>, " |
2153 | "not %<=%>"); | |
6de9cd9a DN |
2154 | m = MATCH_ERROR; |
2155 | goto cleanup; | |
2156 | } | |
2157 | ||
2158 | m = gfc_match_init_expr (&initializer); | |
2159 | if (m == MATCH_NO) | |
2160 | { | |
2161 | gfc_error ("Expected an initialization expression at %C"); | |
2162 | m = MATCH_ERROR; | |
2163 | } | |
2164 | ||
ade20620 TB |
2165 | if (current_attr.flavor != FL_PARAMETER && gfc_pure (NULL) |
2166 | && gfc_state_stack->state != COMP_DERIVED) | |
6de9cd9a | 2167 | { |
636dff67 SK |
2168 | gfc_error ("Initialization of variable at %C is not allowed in " |
2169 | "a PURE procedure"); | |
6de9cd9a DN |
2170 | m = MATCH_ERROR; |
2171 | } | |
2172 | ||
ccd7751b TB |
2173 | if (current_attr.flavor != FL_PARAMETER |
2174 | && gfc_state_stack->state != COMP_DERIVED) | |
2175 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); | |
2176 | ||
6de9cd9a DN |
2177 | if (m != MATCH_YES) |
2178 | goto cleanup; | |
2179 | } | |
cb44ab82 VL |
2180 | } |
2181 | ||
5046aff5 PT |
2182 | if (initializer != NULL && current_attr.allocatable |
2183 | && gfc_current_state () == COMP_DERIVED) | |
2184 | { | |
636dff67 SK |
2185 | gfc_error ("Initialization of allocatable component at %C is not " |
2186 | "allowed"); | |
5046aff5 PT |
2187 | m = MATCH_ERROR; |
2188 | goto cleanup; | |
2189 | } | |
2190 | ||
54b4ba60 | 2191 | /* Add the initializer. Note that it is fine if initializer is |
6de9cd9a DN |
2192 | NULL here, because we sometimes also need to check if a |
2193 | declaration *must* have an initialization expression. */ | |
2194 | if (gfc_current_state () != COMP_DERIVED) | |
2195 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
2196 | else | |
54b4ba60 | 2197 | { |
5046aff5 | 2198 | if (current_ts.type == BT_DERIVED |
636dff67 | 2199 | && !current_attr.pointer && !initializer) |
54b4ba60 PB |
2200 | initializer = gfc_default_initializer (¤t_ts); |
2201 | t = build_struct (name, cl, &initializer, &as); | |
2202 | } | |
6de9cd9a | 2203 | |
524af0d6 | 2204 | m = (t) ? MATCH_YES : MATCH_ERROR; |
6de9cd9a DN |
2205 | |
2206 | cleanup: | |
2207 | /* Free stuff up and return. */ | |
2208 | gfc_free_expr (initializer); | |
2209 | gfc_free_array_spec (as); | |
2210 | ||
2211 | return m; | |
2212 | } | |
2213 | ||
2214 | ||
b2b81a3f BM |
2215 | /* Match an extended-f77 "TYPESPEC*bytesize"-style kind specification. |
2216 | This assumes that the byte size is equal to the kind number for | |
2217 | non-COMPLEX types, and equal to twice the kind number for COMPLEX. */ | |
6de9cd9a DN |
2218 | |
2219 | match | |
636dff67 | 2220 | gfc_match_old_kind_spec (gfc_typespec *ts) |
6de9cd9a DN |
2221 | { |
2222 | match m; | |
5cf54585 | 2223 | int original_kind; |
6de9cd9a DN |
2224 | |
2225 | if (gfc_match_char ('*') != MATCH_YES) | |
2226 | return MATCH_NO; | |
2227 | ||
5cf54585 | 2228 | m = gfc_match_small_literal_int (&ts->kind, NULL); |
6de9cd9a DN |
2229 | if (m != MATCH_YES) |
2230 | return MATCH_ERROR; | |
2231 | ||
e45b3c75 ES |
2232 | original_kind = ts->kind; |
2233 | ||
6de9cd9a | 2234 | /* Massage the kind numbers for complex types. */ |
e45b3c75 ES |
2235 | if (ts->type == BT_COMPLEX) |
2236 | { | |
2237 | if (ts->kind % 2) | |
636dff67 SK |
2238 | { |
2239 | gfc_error ("Old-style type declaration %s*%d not supported at %C", | |
2240 | gfc_basic_typename (ts->type), original_kind); | |
2241 | return MATCH_ERROR; | |
2242 | } | |
e45b3c75 | 2243 | ts->kind /= 2; |
f4347334 ZG |
2244 | |
2245 | } | |
2246 | ||
203c7ebf | 2247 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
f4347334 ZG |
2248 | ts->kind = 8; |
2249 | ||
2250 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2251 | { | |
2252 | if (ts->kind == 4) | |
2253 | { | |
203c7ebf | 2254 | if (flag_real4_kind == 8) |
f4347334 | 2255 | ts->kind = 8; |
203c7ebf | 2256 | if (flag_real4_kind == 10) |
f4347334 | 2257 | ts->kind = 10; |
203c7ebf | 2258 | if (flag_real4_kind == 16) |
f4347334 ZG |
2259 | ts->kind = 16; |
2260 | } | |
2261 | ||
2262 | if (ts->kind == 8) | |
2263 | { | |
203c7ebf | 2264 | if (flag_real8_kind == 4) |
f4347334 | 2265 | ts->kind = 4; |
203c7ebf | 2266 | if (flag_real8_kind == 10) |
f4347334 | 2267 | ts->kind = 10; |
203c7ebf | 2268 | if (flag_real8_kind == 16) |
f4347334 ZG |
2269 | ts->kind = 16; |
2270 | } | |
e45b3c75 | 2271 | } |
6de9cd9a | 2272 | |
e7a2d5fb | 2273 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a | 2274 | { |
e45b3c75 | 2275 | gfc_error ("Old-style type declaration %s*%d not supported at %C", |
636dff67 | 2276 | gfc_basic_typename (ts->type), original_kind); |
6de9cd9a DN |
2277 | return MATCH_ERROR; |
2278 | } | |
2279 | ||
524af0d6 JB |
2280 | if (!gfc_notify_std (GFC_STD_GNU, |
2281 | "Nonstandard type declaration %s*%d at %C", | |
2282 | gfc_basic_typename(ts->type), original_kind)) | |
df8652dc SK |
2283 | return MATCH_ERROR; |
2284 | ||
6de9cd9a DN |
2285 | return MATCH_YES; |
2286 | } | |
2287 | ||
2288 | ||
2289 | /* Match a kind specification. Since kinds are generally optional, we | |
2290 | usually return MATCH_NO if something goes wrong. If a "kind=" | |
2291 | string is found, then we know we have an error. */ | |
2292 | ||
2293 | match | |
e2d29968 | 2294 | gfc_match_kind_spec (gfc_typespec *ts, bool kind_expr_only) |
6de9cd9a | 2295 | { |
e2d29968 | 2296 | locus where, loc; |
6de9cd9a DN |
2297 | gfc_expr *e; |
2298 | match m, n; | |
96ee3a4a | 2299 | char c; |
6de9cd9a DN |
2300 | const char *msg; |
2301 | ||
2302 | m = MATCH_NO; | |
e2d29968 | 2303 | n = MATCH_YES; |
6de9cd9a DN |
2304 | e = NULL; |
2305 | ||
e2d29968 PT |
2306 | where = loc = gfc_current_locus; |
2307 | ||
2308 | if (kind_expr_only) | |
2309 | goto kind_expr; | |
6de9cd9a DN |
2310 | |
2311 | if (gfc_match_char ('(') == MATCH_NO) | |
2312 | return MATCH_NO; | |
2313 | ||
2314 | /* Also gobbles optional text. */ | |
2315 | if (gfc_match (" kind = ") == MATCH_YES) | |
2316 | m = MATCH_ERROR; | |
2317 | ||
e2d29968 PT |
2318 | loc = gfc_current_locus; |
2319 | ||
2320 | kind_expr: | |
6de9cd9a | 2321 | n = gfc_match_init_expr (&e); |
e2d29968 | 2322 | |
6de9cd9a | 2323 | if (n != MATCH_YES) |
e2d29968 | 2324 | { |
1c8bcdf7 | 2325 | if (gfc_matching_function) |
e2d29968 | 2326 | { |
f5acf0f2 | 2327 | /* The function kind expression might include use associated or |
1c8bcdf7 PT |
2328 | imported parameters and try again after the specification |
2329 | expressions..... */ | |
e2d29968 PT |
2330 | if (gfc_match_char (')') != MATCH_YES) |
2331 | { | |
2332 | gfc_error ("Missing right parenthesis at %C"); | |
2333 | m = MATCH_ERROR; | |
2334 | goto no_match; | |
2335 | } | |
2336 | ||
2337 | gfc_free_expr (e); | |
e2d29968 PT |
2338 | gfc_undo_symbols (); |
2339 | return MATCH_YES; | |
2340 | } | |
2341 | else | |
2342 | { | |
2343 | /* ....or else, the match is real. */ | |
2344 | if (n == MATCH_NO) | |
2345 | gfc_error ("Expected initialization expression at %C"); | |
2346 | if (n != MATCH_YES) | |
2347 | return MATCH_ERROR; | |
2348 | } | |
2349 | } | |
6de9cd9a DN |
2350 | |
2351 | if (e->rank != 0) | |
2352 | { | |
2353 | gfc_error ("Expected scalar initialization expression at %C"); | |
2354 | m = MATCH_ERROR; | |
2355 | goto no_match; | |
2356 | } | |
2357 | ||
2358 | msg = gfc_extract_int (e, &ts->kind); | |
1c8bcdf7 | 2359 | |
6de9cd9a DN |
2360 | if (msg != NULL) |
2361 | { | |
2362 | gfc_error (msg); | |
2363 | m = MATCH_ERROR; | |
2364 | goto no_match; | |
2365 | } | |
2366 | ||
a8b3b0b6 CR |
2367 | /* Before throwing away the expression, let's see if we had a |
2368 | C interoperable kind (and store the fact). */ | |
2369 | if (e->ts.is_c_interop == 1) | |
2370 | { | |
eea58adb | 2371 | /* Mark this as C interoperable if being declared with one |
a8b3b0b6 CR |
2372 | of the named constants from iso_c_binding. */ |
2373 | ts->is_c_interop = e->ts.is_iso_c; | |
2374 | ts->f90_type = e->ts.f90_type; | |
2375 | } | |
f5acf0f2 | 2376 | |
6de9cd9a DN |
2377 | gfc_free_expr (e); |
2378 | e = NULL; | |
2379 | ||
a8b3b0b6 CR |
2380 | /* Ignore errors to this point, if we've gotten here. This means |
2381 | we ignore the m=MATCH_ERROR from above. */ | |
e7a2d5fb | 2382 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a DN |
2383 | { |
2384 | gfc_error ("Kind %d not supported for type %s at %C", ts->kind, | |
2385 | gfc_basic_typename (ts->type)); | |
96ee3a4a TB |
2386 | gfc_current_locus = where; |
2387 | return MATCH_ERROR; | |
6de9cd9a | 2388 | } |
96ee3a4a | 2389 | |
2ec855f1 TB |
2390 | /* Warn if, e.g., c_int is used for a REAL variable, but not |
2391 | if, e.g., c_double is used for COMPLEX as the standard | |
2392 | explicitly says that the kind type parameter for complex and real | |
2393 | variable is the same, i.e. c_float == c_float_complex. */ | |
2394 | if (ts->f90_type != BT_UNKNOWN && ts->f90_type != ts->type | |
2395 | && !((ts->f90_type == BT_REAL && ts->type == BT_COMPLEX) | |
2396 | || (ts->f90_type == BT_COMPLEX && ts->type == BT_REAL))) | |
db30e21c | 2397 | gfc_warning_now (0, "C kind type parameter is for type %s but type at %L " |
2be51762 TB |
2398 | "is %s", gfc_basic_typename (ts->f90_type), &where, |
2399 | gfc_basic_typename (ts->type)); | |
2ec855f1 | 2400 | |
96ee3a4a | 2401 | gfc_gobble_whitespace (); |
8fc541d3 FXC |
2402 | if ((c = gfc_next_ascii_char ()) != ')' |
2403 | && (ts->type != BT_CHARACTER || c != ',')) | |
6de9cd9a | 2404 | { |
96ee3a4a TB |
2405 | if (ts->type == BT_CHARACTER) |
2406 | gfc_error ("Missing right parenthesis or comma at %C"); | |
2407 | else | |
2408 | gfc_error ("Missing right parenthesis at %C"); | |
e2d29968 | 2409 | m = MATCH_ERROR; |
6de9cd9a | 2410 | } |
a8b3b0b6 CR |
2411 | else |
2412 | /* All tests passed. */ | |
2413 | m = MATCH_YES; | |
6de9cd9a | 2414 | |
a8b3b0b6 CR |
2415 | if(m == MATCH_ERROR) |
2416 | gfc_current_locus = where; | |
f4347334 | 2417 | |
203c7ebf | 2418 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
f4347334 ZG |
2419 | ts->kind = 8; |
2420 | ||
2421 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2422 | { | |
2423 | if (ts->kind == 4) | |
2424 | { | |
203c7ebf | 2425 | if (flag_real4_kind == 8) |
f4347334 | 2426 | ts->kind = 8; |
203c7ebf | 2427 | if (flag_real4_kind == 10) |
f4347334 | 2428 | ts->kind = 10; |
203c7ebf | 2429 | if (flag_real4_kind == 16) |
f4347334 ZG |
2430 | ts->kind = 16; |
2431 | } | |
2432 | ||
2433 | if (ts->kind == 8) | |
2434 | { | |
203c7ebf | 2435 | if (flag_real8_kind == 4) |
f4347334 | 2436 | ts->kind = 4; |
203c7ebf | 2437 | if (flag_real8_kind == 10) |
f4347334 | 2438 | ts->kind = 10; |
203c7ebf | 2439 | if (flag_real8_kind == 16) |
f4347334 ZG |
2440 | ts->kind = 16; |
2441 | } | |
2442 | } | |
2443 | ||
a8b3b0b6 CR |
2444 | /* Return what we know from the test(s). */ |
2445 | return m; | |
6de9cd9a DN |
2446 | |
2447 | no_match: | |
2448 | gfc_free_expr (e); | |
63645982 | 2449 | gfc_current_locus = where; |
6de9cd9a DN |
2450 | return m; |
2451 | } | |
2452 | ||
2453 | ||
187de1ed FXC |
2454 | static match |
2455 | match_char_kind (int * kind, int * is_iso_c) | |
2456 | { | |
2457 | locus where; | |
2458 | gfc_expr *e; | |
2459 | match m, n; | |
2460 | const char *msg; | |
2461 | ||
2462 | m = MATCH_NO; | |
2463 | e = NULL; | |
2464 | where = gfc_current_locus; | |
2465 | ||
2466 | n = gfc_match_init_expr (&e); | |
96ee3a4a | 2467 | |
1c8bcdf7 | 2468 | if (n != MATCH_YES && gfc_matching_function) |
96ee3a4a | 2469 | { |
1c8bcdf7 | 2470 | /* The expression might include use-associated or imported |
f5acf0f2 | 2471 | parameters and try again after the specification |
1c8bcdf7 | 2472 | expressions. */ |
96ee3a4a | 2473 | gfc_free_expr (e); |
96ee3a4a TB |
2474 | gfc_undo_symbols (); |
2475 | return MATCH_YES; | |
2476 | } | |
2477 | ||
187de1ed FXC |
2478 | if (n == MATCH_NO) |
2479 | gfc_error ("Expected initialization expression at %C"); | |
2480 | if (n != MATCH_YES) | |
2481 | return MATCH_ERROR; | |
2482 | ||
2483 | if (e->rank != 0) | |
2484 | { | |
2485 | gfc_error ("Expected scalar initialization expression at %C"); | |
2486 | m = MATCH_ERROR; | |
2487 | goto no_match; | |
2488 | } | |
2489 | ||
2490 | msg = gfc_extract_int (e, kind); | |
2491 | *is_iso_c = e->ts.is_iso_c; | |
2492 | if (msg != NULL) | |
2493 | { | |
2494 | gfc_error (msg); | |
2495 | m = MATCH_ERROR; | |
2496 | goto no_match; | |
2497 | } | |
2498 | ||
2499 | gfc_free_expr (e); | |
2500 | ||
2501 | /* Ignore errors to this point, if we've gotten here. This means | |
2502 | we ignore the m=MATCH_ERROR from above. */ | |
2503 | if (gfc_validate_kind (BT_CHARACTER, *kind, true) < 0) | |
2504 | { | |
2505 | gfc_error ("Kind %d is not supported for CHARACTER at %C", *kind); | |
2506 | m = MATCH_ERROR; | |
2507 | } | |
2508 | else | |
2509 | /* All tests passed. */ | |
2510 | m = MATCH_YES; | |
2511 | ||
2512 | if (m == MATCH_ERROR) | |
2513 | gfc_current_locus = where; | |
f5acf0f2 | 2514 | |
187de1ed FXC |
2515 | /* Return what we know from the test(s). */ |
2516 | return m; | |
2517 | ||
2518 | no_match: | |
2519 | gfc_free_expr (e); | |
2520 | gfc_current_locus = where; | |
2521 | return m; | |
2522 | } | |
2523 | ||
8234e5e0 | 2524 | |
6de9cd9a DN |
2525 | /* Match the various kind/length specifications in a CHARACTER |
2526 | declaration. We don't return MATCH_NO. */ | |
2527 | ||
8234e5e0 SK |
2528 | match |
2529 | gfc_match_char_spec (gfc_typespec *ts) | |
6de9cd9a | 2530 | { |
187de1ed | 2531 | int kind, seen_length, is_iso_c; |
6de9cd9a DN |
2532 | gfc_charlen *cl; |
2533 | gfc_expr *len; | |
2534 | match m; | |
e69afb29 | 2535 | bool deferred; |
187de1ed | 2536 | |
6de9cd9a DN |
2537 | len = NULL; |
2538 | seen_length = 0; | |
187de1ed FXC |
2539 | kind = 0; |
2540 | is_iso_c = 0; | |
e69afb29 | 2541 | deferred = false; |
6de9cd9a DN |
2542 | |
2543 | /* Try the old-style specification first. */ | |
2544 | old_char_selector = 0; | |
2545 | ||
2767f2cc | 2546 | m = match_char_length (&len, &deferred, true); |
6de9cd9a DN |
2547 | if (m != MATCH_NO) |
2548 | { | |
2549 | if (m == MATCH_YES) | |
2550 | old_char_selector = 1; | |
2551 | seen_length = 1; | |
2552 | goto done; | |
2553 | } | |
2554 | ||
2555 | m = gfc_match_char ('('); | |
2556 | if (m != MATCH_YES) | |
2557 | { | |
a8b3b0b6 | 2558 | m = MATCH_YES; /* Character without length is a single char. */ |
6de9cd9a DN |
2559 | goto done; |
2560 | } | |
2561 | ||
a8b3b0b6 | 2562 | /* Try the weird case: ( KIND = <int> [ , LEN = <len-param> ] ). */ |
6de9cd9a DN |
2563 | if (gfc_match (" kind =") == MATCH_YES) |
2564 | { | |
187de1ed | 2565 | m = match_char_kind (&kind, &is_iso_c); |
f5acf0f2 | 2566 | |
6de9cd9a DN |
2567 | if (m == MATCH_ERROR) |
2568 | goto done; | |
2569 | if (m == MATCH_NO) | |
2570 | goto syntax; | |
2571 | ||
2572 | if (gfc_match (" , len =") == MATCH_NO) | |
2573 | goto rparen; | |
2574 | ||
e69afb29 | 2575 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
2576 | if (m == MATCH_NO) |
2577 | goto syntax; | |
2578 | if (m == MATCH_ERROR) | |
2579 | goto done; | |
2580 | seen_length = 1; | |
2581 | ||
2582 | goto rparen; | |
2583 | } | |
2584 | ||
66e4ab31 | 2585 | /* Try to match "LEN = <len-param>" or "LEN = <len-param>, KIND = <int>". */ |
6de9cd9a DN |
2586 | if (gfc_match (" len =") == MATCH_YES) |
2587 | { | |
e69afb29 | 2588 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
2589 | if (m == MATCH_NO) |
2590 | goto syntax; | |
2591 | if (m == MATCH_ERROR) | |
2592 | goto done; | |
2593 | seen_length = 1; | |
2594 | ||
2595 | if (gfc_match_char (')') == MATCH_YES) | |
2596 | goto done; | |
2597 | ||
2598 | if (gfc_match (" , kind =") != MATCH_YES) | |
2599 | goto syntax; | |
2600 | ||
187de1ed FXC |
2601 | if (match_char_kind (&kind, &is_iso_c) == MATCH_ERROR) |
2602 | goto done; | |
6de9cd9a DN |
2603 | |
2604 | goto rparen; | |
2605 | } | |
2606 | ||
66e4ab31 | 2607 | /* Try to match ( <len-param> ) or ( <len-param> , [ KIND = ] <int> ). */ |
e69afb29 | 2608 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
2609 | if (m == MATCH_NO) |
2610 | goto syntax; | |
2611 | if (m == MATCH_ERROR) | |
2612 | goto done; | |
2613 | seen_length = 1; | |
2614 | ||
2615 | m = gfc_match_char (')'); | |
2616 | if (m == MATCH_YES) | |
2617 | goto done; | |
2618 | ||
2619 | if (gfc_match_char (',') != MATCH_YES) | |
2620 | goto syntax; | |
2621 | ||
a8b3b0b6 | 2622 | gfc_match (" kind ="); /* Gobble optional text. */ |
6de9cd9a | 2623 | |
187de1ed | 2624 | m = match_char_kind (&kind, &is_iso_c); |
6de9cd9a DN |
2625 | if (m == MATCH_ERROR) |
2626 | goto done; | |
2627 | if (m == MATCH_NO) | |
2628 | goto syntax; | |
2629 | ||
2630 | rparen: | |
2631 | /* Require a right-paren at this point. */ | |
2632 | m = gfc_match_char (')'); | |
2633 | if (m == MATCH_YES) | |
2634 | goto done; | |
2635 | ||
2636 | syntax: | |
2637 | gfc_error ("Syntax error in CHARACTER declaration at %C"); | |
2638 | m = MATCH_ERROR; | |
16f8ffc8 JD |
2639 | gfc_free_expr (len); |
2640 | return m; | |
6de9cd9a DN |
2641 | |
2642 | done: | |
a99d95a2 PT |
2643 | /* Deal with character functions after USE and IMPORT statements. */ |
2644 | if (gfc_matching_function) | |
1c8bcdf7 | 2645 | { |
a99d95a2 | 2646 | gfc_free_expr (len); |
1c8bcdf7 PT |
2647 | gfc_undo_symbols (); |
2648 | return MATCH_YES; | |
2649 | } | |
2650 | ||
6de9cd9a DN |
2651 | if (m != MATCH_YES) |
2652 | { | |
2653 | gfc_free_expr (len); | |
2654 | return m; | |
2655 | } | |
2656 | ||
2657 | /* Do some final massaging of the length values. */ | |
b76e28c6 | 2658 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
2659 | |
2660 | if (seen_length == 0) | |
b7e75771 | 2661 | cl->length = gfc_get_int_expr (gfc_default_integer_kind, NULL, 1); |
6de9cd9a | 2662 | else |
5cd09fac | 2663 | cl->length = len; |
6de9cd9a | 2664 | |
bc21d315 | 2665 | ts->u.cl = cl; |
187de1ed | 2666 | ts->kind = kind == 0 ? gfc_default_character_kind : kind; |
e69afb29 | 2667 | ts->deferred = deferred; |
6de9cd9a | 2668 | |
eea58adb | 2669 | /* We have to know if it was a C interoperable kind so we can |
a8b3b0b6 | 2670 | do accurate type checking of bind(c) procs, etc. */ |
187de1ed | 2671 | if (kind != 0) |
eea58adb | 2672 | /* Mark this as C interoperable if being declared with one |
187de1ed FXC |
2673 | of the named constants from iso_c_binding. */ |
2674 | ts->is_c_interop = is_iso_c; | |
a8b3b0b6 | 2675 | else if (len != NULL) |
187de1ed FXC |
2676 | /* Here, we might have parsed something such as: character(c_char) |
2677 | In this case, the parsing code above grabs the c_char when | |
2678 | looking for the length (line 1690, roughly). it's the last | |
2679 | testcase for parsing the kind params of a character variable. | |
2680 | However, it's not actually the length. this seems like it | |
f5acf0f2 | 2681 | could be an error. |
187de1ed FXC |
2682 | To see if the user used a C interop kind, test the expr |
2683 | of the so called length, and see if it's C interoperable. */ | |
2684 | ts->is_c_interop = len->ts.is_iso_c; | |
f5acf0f2 | 2685 | |
6de9cd9a DN |
2686 | return MATCH_YES; |
2687 | } | |
2688 | ||
2689 | ||
e74f1cc8 JW |
2690 | /* Matches a declaration-type-spec (F03:R502). If successful, sets the ts |
2691 | structure to the matched specification. This is necessary for FUNCTION and | |
6de9cd9a DN |
2692 | IMPLICIT statements. |
2693 | ||
d51347f9 | 2694 | If implicit_flag is nonzero, then we don't check for the optional |
e5ddaa24 | 2695 | kind specification. Not doing so is needed for matching an IMPLICIT |
6de9cd9a DN |
2696 | statement correctly. */ |
2697 | ||
e2d29968 | 2698 | match |
e74f1cc8 | 2699 | gfc_match_decl_type_spec (gfc_typespec *ts, int implicit_flag) |
6de9cd9a DN |
2700 | { |
2701 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c3f34952 | 2702 | gfc_symbol *sym, *dt_sym; |
6de9cd9a | 2703 | match m; |
8fc541d3 | 2704 | char c; |
0fb56814 | 2705 | bool seen_deferred_kind, matched_type; |
c3f34952 | 2706 | const char *dt_name; |
6de9cd9a | 2707 | |
1c8bcdf7 PT |
2708 | /* A belt and braces check that the typespec is correctly being treated |
2709 | as a deferred characteristic association. */ | |
2710 | seen_deferred_kind = (gfc_current_state () == COMP_FUNCTION) | |
a99d95a2 PT |
2711 | && (gfc_current_block ()->result->ts.kind == -1) |
2712 | && (ts->kind == -1); | |
6de9cd9a | 2713 | gfc_clear_ts (ts); |
1c8bcdf7 PT |
2714 | if (seen_deferred_kind) |
2715 | ts->kind = -1; | |
6de9cd9a | 2716 | |
a8b3b0b6 | 2717 | /* Clear the current binding label, in case one is given. */ |
62603fae | 2718 | curr_binding_label = NULL; |
a8b3b0b6 | 2719 | |
5f700e6d AL |
2720 | if (gfc_match (" byte") == MATCH_YES) |
2721 | { | |
524af0d6 | 2722 | if (!gfc_notify_std (GFC_STD_GNU, "BYTE type at %C")) |
5f700e6d AL |
2723 | return MATCH_ERROR; |
2724 | ||
2725 | if (gfc_validate_kind (BT_INTEGER, 1, true) < 0) | |
2726 | { | |
2727 | gfc_error ("BYTE type used at %C " | |
2728 | "is not available on the target machine"); | |
2729 | return MATCH_ERROR; | |
2730 | } | |
d51347f9 | 2731 | |
5f700e6d AL |
2732 | ts->type = BT_INTEGER; |
2733 | ts->kind = 1; | |
2734 | return MATCH_YES; | |
2735 | } | |
2736 | ||
0fb56814 | 2737 | |
45a69325 | 2738 | m = gfc_match (" type ("); |
0fb56814 | 2739 | matched_type = (m == MATCH_YES); |
45a69325 TB |
2740 | if (matched_type) |
2741 | { | |
2742 | gfc_gobble_whitespace (); | |
2743 | if (gfc_peek_ascii_char () == '*') | |
2744 | { | |
2745 | if ((m = gfc_match ("*)")) != MATCH_YES) | |
2746 | return m; | |
2747 | if (gfc_current_state () == COMP_DERIVED) | |
2748 | { | |
2749 | gfc_error ("Assumed type at %C is not allowed for components"); | |
2750 | return MATCH_ERROR; | |
2751 | } | |
524af0d6 JB |
2752 | if (!gfc_notify_std (GFC_STD_F2008_TS, "Assumed type " |
2753 | "at %C")) | |
45a69325 TB |
2754 | return MATCH_ERROR; |
2755 | ts->type = BT_ASSUMED; | |
2756 | return MATCH_YES; | |
2757 | } | |
2758 | ||
2759 | m = gfc_match ("%n", name); | |
2760 | matched_type = (m == MATCH_YES); | |
2761 | } | |
2762 | ||
0fb56814 TB |
2763 | if ((matched_type && strcmp ("integer", name) == 0) |
2764 | || (!matched_type && gfc_match (" integer") == MATCH_YES)) | |
6de9cd9a DN |
2765 | { |
2766 | ts->type = BT_INTEGER; | |
9d64df18 | 2767 | ts->kind = gfc_default_integer_kind; |
6de9cd9a DN |
2768 | goto get_kind; |
2769 | } | |
2770 | ||
0fb56814 TB |
2771 | if ((matched_type && strcmp ("character", name) == 0) |
2772 | || (!matched_type && gfc_match (" character") == MATCH_YES)) | |
6de9cd9a | 2773 | { |
0fb56814 | 2774 | if (matched_type |
524af0d6 JB |
2775 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
2776 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
2777 | return MATCH_ERROR; |
2778 | ||
6de9cd9a | 2779 | ts->type = BT_CHARACTER; |
e5ddaa24 | 2780 | if (implicit_flag == 0) |
0fb56814 | 2781 | m = gfc_match_char_spec (ts); |
e5ddaa24 | 2782 | else |
0fb56814 TB |
2783 | m = MATCH_YES; |
2784 | ||
2785 | if (matched_type && m == MATCH_YES && gfc_match_char (')') != MATCH_YES) | |
2786 | m = MATCH_ERROR; | |
2787 | ||
2788 | return m; | |
6de9cd9a DN |
2789 | } |
2790 | ||
0fb56814 TB |
2791 | if ((matched_type && strcmp ("real", name) == 0) |
2792 | || (!matched_type && gfc_match (" real") == MATCH_YES)) | |
6de9cd9a DN |
2793 | { |
2794 | ts->type = BT_REAL; | |
9d64df18 | 2795 | ts->kind = gfc_default_real_kind; |
6de9cd9a DN |
2796 | goto get_kind; |
2797 | } | |
2798 | ||
0fb56814 TB |
2799 | if ((matched_type |
2800 | && (strcmp ("doubleprecision", name) == 0 | |
2801 | || (strcmp ("double", name) == 0 | |
2802 | && gfc_match (" precision") == MATCH_YES))) | |
2803 | || (!matched_type && gfc_match (" double precision") == MATCH_YES)) | |
6de9cd9a | 2804 | { |
0fb56814 | 2805 | if (matched_type |
524af0d6 JB |
2806 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
2807 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
2808 | return MATCH_ERROR; |
2809 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
2810 | return MATCH_ERROR; | |
2811 | ||
6de9cd9a | 2812 | ts->type = BT_REAL; |
9d64df18 | 2813 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
2814 | return MATCH_YES; |
2815 | } | |
2816 | ||
0fb56814 TB |
2817 | if ((matched_type && strcmp ("complex", name) == 0) |
2818 | || (!matched_type && gfc_match (" complex") == MATCH_YES)) | |
6de9cd9a DN |
2819 | { |
2820 | ts->type = BT_COMPLEX; | |
9d64df18 | 2821 | ts->kind = gfc_default_complex_kind; |
6de9cd9a DN |
2822 | goto get_kind; |
2823 | } | |
2824 | ||
0fb56814 TB |
2825 | if ((matched_type |
2826 | && (strcmp ("doublecomplex", name) == 0 | |
2827 | || (strcmp ("double", name) == 0 | |
2828 | && gfc_match (" complex") == MATCH_YES))) | |
2829 | || (!matched_type && gfc_match (" double complex") == MATCH_YES)) | |
6de9cd9a | 2830 | { |
524af0d6 | 2831 | if (!gfc_notify_std (GFC_STD_GNU, "DOUBLE COMPLEX at %C")) |
0fb56814 TB |
2832 | return MATCH_ERROR; |
2833 | ||
2834 | if (matched_type | |
524af0d6 JB |
2835 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
2836 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
2837 | return MATCH_ERROR; |
2838 | ||
2839 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
df8652dc SK |
2840 | return MATCH_ERROR; |
2841 | ||
6de9cd9a | 2842 | ts->type = BT_COMPLEX; |
9d64df18 | 2843 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
2844 | return MATCH_YES; |
2845 | } | |
2846 | ||
0fb56814 TB |
2847 | if ((matched_type && strcmp ("logical", name) == 0) |
2848 | || (!matched_type && gfc_match (" logical") == MATCH_YES)) | |
6de9cd9a DN |
2849 | { |
2850 | ts->type = BT_LOGICAL; | |
9d64df18 | 2851 | ts->kind = gfc_default_logical_kind; |
6de9cd9a DN |
2852 | goto get_kind; |
2853 | } | |
2854 | ||
0fb56814 TB |
2855 | if (matched_type) |
2856 | m = gfc_match_char (')'); | |
2857 | ||
cf2b3c22 TB |
2858 | if (m == MATCH_YES) |
2859 | ts->type = BT_DERIVED; | |
2860 | else | |
727e8544 | 2861 | { |
528622fd JW |
2862 | /* Match CLASS declarations. */ |
2863 | m = gfc_match (" class ( * )"); | |
2864 | if (m == MATCH_ERROR) | |
2865 | return MATCH_ERROR; | |
2866 | else if (m == MATCH_YES) | |
2867 | { | |
8b704316 PT |
2868 | gfc_symbol *upe; |
2869 | gfc_symtree *st; | |
2870 | ts->type = BT_CLASS; | |
f5acf0f2 | 2871 | gfc_find_symbol ("STAR", gfc_current_ns, 1, &upe); |
8b704316 PT |
2872 | if (upe == NULL) |
2873 | { | |
f5acf0f2 PT |
2874 | upe = gfc_new_symbol ("STAR", gfc_current_ns); |
2875 | st = gfc_new_symtree (&gfc_current_ns->sym_root, "STAR"); | |
8b704316 PT |
2876 | st->n.sym = upe; |
2877 | gfc_set_sym_referenced (upe); | |
2878 | upe->refs++; | |
2879 | upe->ts.type = BT_VOID; | |
2880 | upe->attr.unlimited_polymorphic = 1; | |
2881 | /* This is essential to force the construction of | |
2882 | unlimited polymorphic component class containers. */ | |
2883 | upe->attr.zero_comp = 1; | |
524af0d6 JB |
2884 | if (!gfc_add_flavor (&upe->attr, FL_DERIVED, NULL, |
2885 | &gfc_current_locus)) | |
528622fd JW |
2886 | return MATCH_ERROR; |
2887 | } | |
8b704316 PT |
2888 | else |
2889 | { | |
f5acf0f2 | 2890 | st = gfc_find_symtree (gfc_current_ns->sym_root, "STAR"); |
8b704316 | 2891 | if (st == NULL) |
f5acf0f2 | 2892 | st = gfc_new_symtree (&gfc_current_ns->sym_root, "STAR"); |
8b704316 PT |
2893 | st->n.sym = upe; |
2894 | upe->refs++; | |
2895 | } | |
2896 | ts->u.derived = upe; | |
2897 | return m; | |
2898 | } | |
528622fd | 2899 | |
727e8544 JW |
2900 | m = gfc_match (" class ( %n )", name); |
2901 | if (m != MATCH_YES) | |
2902 | return m; | |
cf2b3c22 | 2903 | ts->type = BT_CLASS; |
727e8544 | 2904 | |
524af0d6 | 2905 | if (!gfc_notify_std (GFC_STD_F2003, "CLASS statement at %C")) |
e74f1cc8 | 2906 | return MATCH_ERROR; |
727e8544 | 2907 | } |
6de9cd9a | 2908 | |
1c8bcdf7 PT |
2909 | /* Defer association of the derived type until the end of the |
2910 | specification block. However, if the derived type can be | |
f5acf0f2 | 2911 | found, add it to the typespec. */ |
1c8bcdf7 | 2912 | if (gfc_matching_function) |
e2d29968 | 2913 | { |
bc21d315 | 2914 | ts->u.derived = NULL; |
1c8bcdf7 PT |
2915 | if (gfc_current_state () != COMP_INTERFACE |
2916 | && !gfc_find_symbol (name, NULL, 1, &sym) && sym) | |
c3f34952 TB |
2917 | { |
2918 | sym = gfc_find_dt_in_generic (sym); | |
2919 | ts->u.derived = sym; | |
2920 | } | |
e2d29968 PT |
2921 | return MATCH_YES; |
2922 | } | |
2923 | ||
2924 | /* Search for the name but allow the components to be defined later. If | |
2925 | type = -1, this typespec has been seen in a function declaration but | |
c3f34952 | 2926 | the type could not be accessed at that point. The actual derived type is |
eea58adb | 2927 | stored in a symtree with the first letter of the name capitalized; the |
c3f34952 TB |
2928 | symtree with the all lower-case name contains the associated |
2929 | generic function. */ | |
2930 | dt_name = gfc_get_string ("%c%s", | |
2931 | (char) TOUPPER ((unsigned char) name[0]), | |
2932 | (const char*)&name[1]); | |
1c8bcdf7 | 2933 | sym = NULL; |
c3f34952 TB |
2934 | dt_sym = NULL; |
2935 | if (ts->kind != -1) | |
6de9cd9a | 2936 | { |
c3f34952 TB |
2937 | gfc_get_ha_symbol (name, &sym); |
2938 | if (sym->generic && gfc_find_symbol (dt_name, NULL, 0, &dt_sym)) | |
2939 | { | |
c4100eae | 2940 | gfc_error ("Type name %qs at %C is ambiguous", name); |
c3f34952 TB |
2941 | return MATCH_ERROR; |
2942 | } | |
2943 | if (sym->generic && !dt_sym) | |
2944 | dt_sym = gfc_find_dt_in_generic (sym); | |
6de9cd9a | 2945 | } |
e2d29968 PT |
2946 | else if (ts->kind == -1) |
2947 | { | |
1c8bcdf7 PT |
2948 | int iface = gfc_state_stack->previous->state != COMP_INTERFACE |
2949 | || gfc_current_ns->has_import_set; | |
c3f34952 TB |
2950 | gfc_find_symbol (name, NULL, iface, &sym); |
2951 | if (sym && sym->generic && gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
f5acf0f2 | 2952 | { |
c4100eae | 2953 | gfc_error ("Type name %qs at %C is ambiguous", name); |
e2d29968 PT |
2954 | return MATCH_ERROR; |
2955 | } | |
c3f34952 TB |
2956 | if (sym && sym->generic && !dt_sym) |
2957 | dt_sym = gfc_find_dt_in_generic (sym); | |
e2d29968 | 2958 | |
1c8bcdf7 | 2959 | ts->kind = 0; |
e2d29968 PT |
2960 | if (sym == NULL) |
2961 | return MATCH_NO; | |
2962 | } | |
6de9cd9a | 2963 | |
c3f34952 TB |
2964 | if ((sym->attr.flavor != FL_UNKNOWN |
2965 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.generic)) | |
2966 | || sym->attr.subroutine) | |
2967 | { | |
fea70c99 MLI |
2968 | gfc_error ("Type name %qs at %C conflicts with previously declared " |
2969 | "entity at %L, which has the same name", name, | |
2970 | &sym->declared_at); | |
c3f34952 TB |
2971 | return MATCH_ERROR; |
2972 | } | |
6de9cd9a | 2973 | |
44c57c2f | 2974 | gfc_save_symbol_data (sym); |
1c8bcdf7 | 2975 | gfc_set_sym_referenced (sym); |
c3f34952 | 2976 | if (!sym->attr.generic |
524af0d6 | 2977 | && !gfc_add_generic (&sym->attr, sym->name, NULL)) |
c3f34952 TB |
2978 | return MATCH_ERROR; |
2979 | ||
2980 | if (!sym->attr.function | |
524af0d6 | 2981 | && !gfc_add_function (&sym->attr, sym->name, NULL)) |
c3f34952 TB |
2982 | return MATCH_ERROR; |
2983 | ||
2984 | if (!dt_sym) | |
2985 | { | |
2986 | gfc_interface *intr, *head; | |
2987 | ||
2988 | /* Use upper case to save the actual derived-type symbol. */ | |
2989 | gfc_get_symbol (dt_name, NULL, &dt_sym); | |
2990 | dt_sym->name = gfc_get_string (sym->name); | |
2991 | head = sym->generic; | |
2992 | intr = gfc_get_interface (); | |
2993 | intr->sym = dt_sym; | |
2994 | intr->where = gfc_current_locus; | |
2995 | intr->next = head; | |
2996 | sym->generic = intr; | |
2997 | sym->attr.if_source = IFSRC_DECL; | |
2998 | } | |
44c57c2f MM |
2999 | else |
3000 | gfc_save_symbol_data (dt_sym); | |
c3f34952 TB |
3001 | |
3002 | gfc_set_sym_referenced (dt_sym); | |
3003 | ||
3004 | if (dt_sym->attr.flavor != FL_DERIVED | |
524af0d6 | 3005 | && !gfc_add_flavor (&dt_sym->attr, FL_DERIVED, sym->name, NULL)) |
c3f34952 TB |
3006 | return MATCH_ERROR; |
3007 | ||
3008 | ts->u.derived = dt_sym; | |
6de9cd9a DN |
3009 | |
3010 | return MATCH_YES; | |
3011 | ||
3012 | get_kind: | |
0fb56814 | 3013 | if (matched_type |
524af0d6 JB |
3014 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3015 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
3016 | return MATCH_ERROR; |
3017 | ||
6de9cd9a DN |
3018 | /* For all types except double, derived and character, look for an |
3019 | optional kind specifier. MATCH_NO is actually OK at this point. */ | |
e5ddaa24 | 3020 | if (implicit_flag == 1) |
0fb56814 TB |
3021 | { |
3022 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
3023 | return MATCH_ERROR; | |
3024 | ||
3025 | return MATCH_YES; | |
3026 | } | |
6de9cd9a | 3027 | |
0ff0dfbf TS |
3028 | if (gfc_current_form == FORM_FREE) |
3029 | { | |
0b3624f6 SK |
3030 | c = gfc_peek_ascii_char (); |
3031 | if (!gfc_is_whitespace (c) && c != '*' && c != '(' | |
636dff67 | 3032 | && c != ':' && c != ',') |
0fb56814 TB |
3033 | { |
3034 | if (matched_type && c == ')') | |
3035 | { | |
3036 | gfc_next_ascii_char (); | |
3037 | return MATCH_YES; | |
3038 | } | |
3039 | return MATCH_NO; | |
3040 | } | |
0ff0dfbf TS |
3041 | } |
3042 | ||
e2d29968 | 3043 | m = gfc_match_kind_spec (ts, false); |
6de9cd9a | 3044 | if (m == MATCH_NO && ts->type != BT_CHARACTER) |
4381322d SK |
3045 | { |
3046 | m = gfc_match_old_kind_spec (ts); | |
3047 | if (gfc_validate_kind (ts->type, ts->kind, true) == -1) | |
3048 | return MATCH_ERROR; | |
3049 | } | |
6de9cd9a | 3050 | |
0fb56814 TB |
3051 | if (matched_type && gfc_match_char (')') != MATCH_YES) |
3052 | return MATCH_ERROR; | |
3053 | ||
1c8bcdf7 PT |
3054 | /* Defer association of the KIND expression of function results |
3055 | until after USE and IMPORT statements. */ | |
3056 | if ((gfc_current_state () == COMP_NONE && gfc_error_flag_test ()) | |
3057 | || gfc_matching_function) | |
3058 | return MATCH_YES; | |
3059 | ||
6de9cd9a DN |
3060 | if (m == MATCH_NO) |
3061 | m = MATCH_YES; /* No kind specifier found. */ | |
3062 | ||
3063 | return m; | |
3064 | } | |
3065 | ||
3066 | ||
e5ddaa24 TS |
3067 | /* Match an IMPLICIT NONE statement. Actually, this statement is |
3068 | already matched in parse.c, or we would not end up here in the | |
3069 | first place. So the only thing we need to check, is if there is | |
3070 | trailing garbage. If not, the match is successful. */ | |
3071 | ||
3072 | match | |
3073 | gfc_match_implicit_none (void) | |
3074 | { | |
8b7a967e TB |
3075 | char c; |
3076 | match m; | |
3077 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
3078 | bool type = false; | |
3079 | bool external = false; | |
a6c63173 TB |
3080 | locus cur_loc = gfc_current_locus; |
3081 | ||
3082 | if (gfc_current_ns->seen_implicit_none | |
3083 | || gfc_current_ns->has_implicit_none_export) | |
3084 | { | |
3085 | gfc_error ("Duplicate IMPLICIT NONE statement at %C"); | |
3086 | return MATCH_ERROR; | |
3087 | } | |
8b7a967e TB |
3088 | |
3089 | gfc_gobble_whitespace (); | |
3090 | c = gfc_peek_ascii_char (); | |
3091 | if (c == '(') | |
3092 | { | |
3093 | (void) gfc_next_ascii_char (); | |
3094 | if (!gfc_notify_std (GFC_STD_F2015, "IMPORT NONE with spec list at %C")) | |
3095 | return MATCH_ERROR; | |
a6c63173 TB |
3096 | |
3097 | gfc_gobble_whitespace (); | |
3098 | if (gfc_peek_ascii_char () == ')') | |
8b7a967e | 3099 | { |
a6c63173 TB |
3100 | (void) gfc_next_ascii_char (); |
3101 | type = true; | |
3102 | } | |
3103 | else | |
3104 | for(;;) | |
3105 | { | |
3106 | m = gfc_match (" %n", name); | |
3107 | if (m != MATCH_YES) | |
3108 | return MATCH_ERROR; | |
8b7a967e | 3109 | |
a6c63173 TB |
3110 | if (strcmp (name, "type") == 0) |
3111 | type = true; | |
3112 | else if (strcmp (name, "external") == 0) | |
3113 | external = true; | |
3114 | else | |
3115 | return MATCH_ERROR; | |
8b7a967e | 3116 | |
a6c63173 TB |
3117 | gfc_gobble_whitespace (); |
3118 | c = gfc_next_ascii_char (); | |
3119 | if (c == ',') | |
3120 | continue; | |
3121 | if (c == ')') | |
3122 | break; | |
3123 | return MATCH_ERROR; | |
3124 | } | |
8b7a967e TB |
3125 | } |
3126 | else | |
3127 | type = true; | |
3128 | ||
3129 | if (gfc_match_eos () != MATCH_YES) | |
3130 | return MATCH_ERROR; | |
3131 | ||
a6c63173 | 3132 | gfc_set_implicit_none (type, external, &cur_loc); |
8b7a967e TB |
3133 | |
3134 | return MATCH_YES; | |
e5ddaa24 TS |
3135 | } |
3136 | ||
3137 | ||
3138 | /* Match the letter range(s) of an IMPLICIT statement. */ | |
3139 | ||
3140 | static match | |
1107b970 | 3141 | match_implicit_range (void) |
e5ddaa24 | 3142 | { |
8fc541d3 FXC |
3143 | char c, c1, c2; |
3144 | int inner; | |
e5ddaa24 TS |
3145 | locus cur_loc; |
3146 | ||
3147 | cur_loc = gfc_current_locus; | |
3148 | ||
3149 | gfc_gobble_whitespace (); | |
8fc541d3 | 3150 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
3151 | if (c != '(') |
3152 | { | |
3153 | gfc_error ("Missing character range in IMPLICIT at %C"); | |
3154 | goto bad; | |
3155 | } | |
3156 | ||
3157 | inner = 1; | |
3158 | while (inner) | |
3159 | { | |
3160 | gfc_gobble_whitespace (); | |
8fc541d3 | 3161 | c1 = gfc_next_ascii_char (); |
e5ddaa24 TS |
3162 | if (!ISALPHA (c1)) |
3163 | goto bad; | |
3164 | ||
3165 | gfc_gobble_whitespace (); | |
8fc541d3 | 3166 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
3167 | |
3168 | switch (c) | |
3169 | { | |
3170 | case ')': | |
66e4ab31 | 3171 | inner = 0; /* Fall through. */ |
e5ddaa24 TS |
3172 | |
3173 | case ',': | |
3174 | c2 = c1; | |
3175 | break; | |
3176 | ||
3177 | case '-': | |
3178 | gfc_gobble_whitespace (); | |
8fc541d3 | 3179 | c2 = gfc_next_ascii_char (); |
e5ddaa24 TS |
3180 | if (!ISALPHA (c2)) |
3181 | goto bad; | |
3182 | ||
3183 | gfc_gobble_whitespace (); | |
8fc541d3 | 3184 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
3185 | |
3186 | if ((c != ',') && (c != ')')) | |
3187 | goto bad; | |
3188 | if (c == ')') | |
3189 | inner = 0; | |
3190 | ||
3191 | break; | |
3192 | ||
3193 | default: | |
3194 | goto bad; | |
3195 | } | |
3196 | ||
3197 | if (c1 > c2) | |
3198 | { | |
3199 | gfc_error ("Letters must be in alphabetic order in " | |
3200 | "IMPLICIT statement at %C"); | |
3201 | goto bad; | |
3202 | } | |
3203 | ||
3204 | /* See if we can add the newly matched range to the pending | |
636dff67 SK |
3205 | implicits from this IMPLICIT statement. We do not check for |
3206 | conflicts with whatever earlier IMPLICIT statements may have | |
3207 | set. This is done when we've successfully finished matching | |
3208 | the current one. */ | |
524af0d6 | 3209 | if (!gfc_add_new_implicit_range (c1, c2)) |
e5ddaa24 TS |
3210 | goto bad; |
3211 | } | |
3212 | ||
3213 | return MATCH_YES; | |
3214 | ||
3215 | bad: | |
3216 | gfc_syntax_error (ST_IMPLICIT); | |
3217 | ||
3218 | gfc_current_locus = cur_loc; | |
3219 | return MATCH_ERROR; | |
3220 | } | |
3221 | ||
3222 | ||
3223 | /* Match an IMPLICIT statement, storing the types for | |
3224 | gfc_set_implicit() if the statement is accepted by the parser. | |
3225 | There is a strange looking, but legal syntactic construction | |
3226 | possible. It looks like: | |
3227 | ||
3228 | IMPLICIT INTEGER (a-b) (c-d) | |
3229 | ||
3230 | This is legal if "a-b" is a constant expression that happens to | |
3231 | equal one of the legal kinds for integers. The real problem | |
3232 | happens with an implicit specification that looks like: | |
3233 | ||
3234 | IMPLICIT INTEGER (a-b) | |
3235 | ||
3236 | In this case, a typespec matcher that is "greedy" (as most of the | |
3237 | matchers are) gobbles the character range as a kindspec, leaving | |
3238 | nothing left. We therefore have to go a bit more slowly in the | |
3239 | matching process by inhibiting the kindspec checking during | |
3240 | typespec matching and checking for a kind later. */ | |
3241 | ||
3242 | match | |
3243 | gfc_match_implicit (void) | |
3244 | { | |
3245 | gfc_typespec ts; | |
3246 | locus cur_loc; | |
8fc541d3 | 3247 | char c; |
e5ddaa24 TS |
3248 | match m; |
3249 | ||
8b7a967e TB |
3250 | if (gfc_current_ns->seen_implicit_none) |
3251 | { | |
3252 | gfc_error ("IMPLICIT statement at %C following an IMPLICIT NONE (type) " | |
3253 | "statement"); | |
3254 | return MATCH_ERROR; | |
3255 | } | |
3256 | ||
44000dbb JD |
3257 | gfc_clear_ts (&ts); |
3258 | ||
e5ddaa24 TS |
3259 | /* We don't allow empty implicit statements. */ |
3260 | if (gfc_match_eos () == MATCH_YES) | |
3261 | { | |
3262 | gfc_error ("Empty IMPLICIT statement at %C"); | |
3263 | return MATCH_ERROR; | |
3264 | } | |
3265 | ||
e5ddaa24 TS |
3266 | do |
3267 | { | |
1107b970 PB |
3268 | /* First cleanup. */ |
3269 | gfc_clear_new_implicit (); | |
3270 | ||
e5ddaa24 | 3271 | /* A basic type is mandatory here. */ |
e74f1cc8 | 3272 | m = gfc_match_decl_type_spec (&ts, 1); |
e5ddaa24 TS |
3273 | if (m == MATCH_ERROR) |
3274 | goto error; | |
3275 | if (m == MATCH_NO) | |
3276 | goto syntax; | |
3277 | ||
3278 | cur_loc = gfc_current_locus; | |
1107b970 | 3279 | m = match_implicit_range (); |
e5ddaa24 TS |
3280 | |
3281 | if (m == MATCH_YES) | |
3282 | { | |
1107b970 | 3283 | /* We may have <TYPE> (<RANGE>). */ |
e5ddaa24 | 3284 | gfc_gobble_whitespace (); |
a6c63173 TB |
3285 | c = gfc_peek_ascii_char (); |
3286 | if (c == ',' || c == '\n' || c == ';' || c == '!') | |
1107b970 PB |
3287 | { |
3288 | /* Check for CHARACTER with no length parameter. */ | |
bc21d315 | 3289 | if (ts.type == BT_CHARACTER && !ts.u.cl) |
1107b970 | 3290 | { |
9d64df18 | 3291 | ts.kind = gfc_default_character_kind; |
b76e28c6 | 3292 | ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
b7e75771 JD |
3293 | ts.u.cl->length = gfc_get_int_expr (gfc_default_integer_kind, |
3294 | NULL, 1); | |
1107b970 PB |
3295 | } |
3296 | ||
3297 | /* Record the Successful match. */ | |
524af0d6 | 3298 | if (!gfc_merge_new_implicit (&ts)) |
1107b970 | 3299 | return MATCH_ERROR; |
a6c63173 TB |
3300 | if (c == ',') |
3301 | c = gfc_next_ascii_char (); | |
3302 | else if (gfc_match_eos () == MATCH_ERROR) | |
3303 | goto error; | |
1107b970 PB |
3304 | continue; |
3305 | } | |
e5ddaa24 TS |
3306 | |
3307 | gfc_current_locus = cur_loc; | |
3308 | } | |
3309 | ||
1107b970 PB |
3310 | /* Discard the (incorrectly) matched range. */ |
3311 | gfc_clear_new_implicit (); | |
3312 | ||
3313 | /* Last chance -- check <TYPE> <SELECTOR> (<RANGE>). */ | |
3314 | if (ts.type == BT_CHARACTER) | |
8234e5e0 | 3315 | m = gfc_match_char_spec (&ts); |
1107b970 | 3316 | else |
e5ddaa24 | 3317 | { |
e2d29968 | 3318 | m = gfc_match_kind_spec (&ts, false); |
e5ddaa24 | 3319 | if (m == MATCH_NO) |
1107b970 PB |
3320 | { |
3321 | m = gfc_match_old_kind_spec (&ts); | |
3322 | if (m == MATCH_ERROR) | |
3323 | goto error; | |
3324 | if (m == MATCH_NO) | |
3325 | goto syntax; | |
3326 | } | |
e5ddaa24 | 3327 | } |
1107b970 PB |
3328 | if (m == MATCH_ERROR) |
3329 | goto error; | |
e5ddaa24 | 3330 | |
1107b970 | 3331 | m = match_implicit_range (); |
e5ddaa24 TS |
3332 | if (m == MATCH_ERROR) |
3333 | goto error; | |
3334 | if (m == MATCH_NO) | |
3335 | goto syntax; | |
3336 | ||
3337 | gfc_gobble_whitespace (); | |
8fc541d3 | 3338 | c = gfc_next_ascii_char (); |
a6c63173 | 3339 | if (c != ',' && gfc_match_eos () != MATCH_YES) |
e5ddaa24 TS |
3340 | goto syntax; |
3341 | ||
524af0d6 | 3342 | if (!gfc_merge_new_implicit (&ts)) |
1107b970 | 3343 | return MATCH_ERROR; |
e5ddaa24 TS |
3344 | } |
3345 | while (c == ','); | |
3346 | ||
1107b970 | 3347 | return MATCH_YES; |
e5ddaa24 TS |
3348 | |
3349 | syntax: | |
3350 | gfc_syntax_error (ST_IMPLICIT); | |
3351 | ||
3352 | error: | |
3353 | return MATCH_ERROR; | |
3354 | } | |
3355 | ||
66e4ab31 | 3356 | |
8998be20 TB |
3357 | match |
3358 | gfc_match_import (void) | |
3359 | { | |
3360 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
3361 | match m; | |
3362 | gfc_symbol *sym; | |
3363 | gfc_symtree *st; | |
3364 | ||
66e4ab31 SK |
3365 | if (gfc_current_ns->proc_name == NULL |
3366 | || gfc_current_ns->proc_name->attr.if_source != IFSRC_IFBODY) | |
8998be20 TB |
3367 | { |
3368 | gfc_error ("IMPORT statement at %C only permitted in " | |
3369 | "an INTERFACE body"); | |
3370 | return MATCH_ERROR; | |
3371 | } | |
3372 | ||
4668d6f9 PT |
3373 | if (gfc_current_ns->proc_name->attr.module_procedure) |
3374 | { | |
3375 | gfc_error ("F2008: C1210 IMPORT statement at %C is not permitted " | |
3376 | "in a module procedure interface body"); | |
3377 | return MATCH_ERROR; | |
3378 | } | |
3379 | ||
524af0d6 | 3380 | if (!gfc_notify_std (GFC_STD_F2003, "IMPORT statement at %C")) |
8998be20 TB |
3381 | return MATCH_ERROR; |
3382 | ||
3383 | if (gfc_match_eos () == MATCH_YES) | |
3384 | { | |
3385 | /* All host variables should be imported. */ | |
3386 | gfc_current_ns->has_import_set = 1; | |
3387 | return MATCH_YES; | |
3388 | } | |
3389 | ||
3390 | if (gfc_match (" ::") == MATCH_YES) | |
3391 | { | |
3392 | if (gfc_match_eos () == MATCH_YES) | |
636dff67 SK |
3393 | { |
3394 | gfc_error ("Expecting list of named entities at %C"); | |
3395 | return MATCH_ERROR; | |
3396 | } | |
8998be20 TB |
3397 | } |
3398 | ||
3399 | for(;;) | |
3400 | { | |
2e8d9212 | 3401 | sym = NULL; |
8998be20 TB |
3402 | m = gfc_match (" %n", name); |
3403 | switch (m) | |
3404 | { | |
3405 | case MATCH_YES: | |
36d3fb4c | 3406 | if (gfc_current_ns->parent != NULL |
66e4ab31 | 3407 | && gfc_find_symbol (name, gfc_current_ns->parent, 1, &sym)) |
36d3fb4c | 3408 | { |
c4100eae | 3409 | gfc_error ("Type name %qs at %C is ambiguous", name); |
36d3fb4c PT |
3410 | return MATCH_ERROR; |
3411 | } | |
4e2cf5f5 | 3412 | else if (!sym && gfc_current_ns->proc_name->ns->parent != NULL |
66e4ab31 SK |
3413 | && gfc_find_symbol (name, |
3414 | gfc_current_ns->proc_name->ns->parent, | |
3415 | 1, &sym)) | |
636dff67 | 3416 | { |
c4100eae | 3417 | gfc_error ("Type name %qs at %C is ambiguous", name); |
636dff67 SK |
3418 | return MATCH_ERROR; |
3419 | } | |
3420 | ||
3421 | if (sym == NULL) | |
3422 | { | |
c4100eae | 3423 | gfc_error ("Cannot IMPORT %qs from host scoping unit " |
636dff67 SK |
3424 | "at %C - does not exist.", name); |
3425 | return MATCH_ERROR; | |
3426 | } | |
3427 | ||
dd8b9dde | 3428 | if (gfc_find_symtree (gfc_current_ns->sym_root, name)) |
636dff67 | 3429 | { |
db30e21c | 3430 | gfc_warning (0, "%qs is already IMPORTed from host scoping unit " |
48749dbc | 3431 | "at %C", name); |
636dff67 SK |
3432 | goto next_item; |
3433 | } | |
3434 | ||
dd8b9dde | 3435 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); |
636dff67 SK |
3436 | st->n.sym = sym; |
3437 | sym->refs++; | |
5a8af0b4 | 3438 | sym->attr.imported = 1; |
8998be20 | 3439 | |
c3f34952 TB |
3440 | if (sym->attr.generic && (sym = gfc_find_dt_in_generic (sym))) |
3441 | { | |
3442 | /* The actual derived type is stored in a symtree with the first | |
eea58adb | 3443 | letter of the name capitalized; the symtree with the all |
1cc0e193 | 3444 | lower-case name contains the associated generic function. */ |
c3f34952 TB |
3445 | st = gfc_new_symtree (&gfc_current_ns->sym_root, |
3446 | gfc_get_string ("%c%s", | |
dd8b9dde TB |
3447 | (char) TOUPPER ((unsigned char) name[0]), |
3448 | &name[1])); | |
c3f34952 TB |
3449 | st->n.sym = sym; |
3450 | sym->refs++; | |
3451 | sym->attr.imported = 1; | |
3452 | } | |
3453 | ||
8998be20 TB |
3454 | goto next_item; |
3455 | ||
3456 | case MATCH_NO: | |
3457 | break; | |
3458 | ||
3459 | case MATCH_ERROR: | |
3460 | return MATCH_ERROR; | |
3461 | } | |
3462 | ||
3463 | next_item: | |
3464 | if (gfc_match_eos () == MATCH_YES) | |
3465 | break; | |
3466 | if (gfc_match_char (',') != MATCH_YES) | |
3467 | goto syntax; | |
3468 | } | |
3469 | ||
3470 | return MATCH_YES; | |
3471 | ||
3472 | syntax: | |
3473 | gfc_error ("Syntax error in IMPORT statement at %C"); | |
3474 | return MATCH_ERROR; | |
3475 | } | |
e5ddaa24 | 3476 | |
66e4ab31 | 3477 | |
f2449db4 RS |
3478 | /* A minimal implementation of gfc_match without whitespace, escape |
3479 | characters or variable arguments. Returns true if the next | |
3480 | characters match the TARGET template exactly. */ | |
3481 | ||
3482 | static bool | |
3483 | match_string_p (const char *target) | |
3484 | { | |
3485 | const char *p; | |
3486 | ||
3487 | for (p = target; *p; p++) | |
8fc541d3 | 3488 | if ((char) gfc_next_ascii_char () != *p) |
f2449db4 RS |
3489 | return false; |
3490 | return true; | |
3491 | } | |
3492 | ||
6de9cd9a DN |
3493 | /* Matches an attribute specification including array specs. If |
3494 | successful, leaves the variables current_attr and current_as | |
3495 | holding the specification. Also sets the colon_seen variable for | |
3496 | later use by matchers associated with initializations. | |
3497 | ||
3498 | This subroutine is a little tricky in the sense that we don't know | |
3499 | if we really have an attr-spec until we hit the double colon. | |
3500 | Until that time, we can only return MATCH_NO. This forces us to | |
3501 | check for duplicate specification at this level. */ | |
3502 | ||
3503 | static match | |
3504 | match_attr_spec (void) | |
3505 | { | |
6de9cd9a | 3506 | /* Modifiers that can exist in a type statement. */ |
d75d9546 | 3507 | enum |
6de9cd9a DN |
3508 | { GFC_DECL_BEGIN = 0, |
3509 | DECL_ALLOCATABLE = GFC_DECL_BEGIN, DECL_DIMENSION, DECL_EXTERNAL, | |
3510 | DECL_IN, DECL_OUT, DECL_INOUT, DECL_INTRINSIC, DECL_OPTIONAL, | |
ee7e677f TB |
3511 | DECL_PARAMETER, DECL_POINTER, DECL_PROTECTED, DECL_PRIVATE, |
3512 | DECL_PUBLIC, DECL_SAVE, DECL_TARGET, DECL_VALUE, DECL_VOLATILE, | |
fe4e525c TB |
3513 | DECL_IS_BIND_C, DECL_CODIMENSION, DECL_ASYNCHRONOUS, DECL_CONTIGUOUS, |
3514 | DECL_NONE, GFC_DECL_END /* Sentinel */ | |
d75d9546 | 3515 | }; |
6de9cd9a DN |
3516 | |
3517 | /* GFC_DECL_END is the sentinel, index starts at 0. */ | |
3518 | #define NUM_DECL GFC_DECL_END | |
3519 | ||
6de9cd9a DN |
3520 | locus start, seen_at[NUM_DECL]; |
3521 | int seen[NUM_DECL]; | |
09639a83 | 3522 | unsigned int d; |
6de9cd9a DN |
3523 | const char *attr; |
3524 | match m; | |
524af0d6 | 3525 | bool t; |
6de9cd9a DN |
3526 | |
3527 | gfc_clear_attr (¤t_attr); | |
63645982 | 3528 | start = gfc_current_locus; |
6de9cd9a DN |
3529 | |
3530 | current_as = NULL; | |
3531 | colon_seen = 0; | |
3532 | ||
3533 | /* See if we get all of the keywords up to the final double colon. */ | |
3534 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3535 | seen[d] = 0; | |
3536 | ||
3537 | for (;;) | |
3538 | { | |
8fc541d3 | 3539 | char ch; |
a8b3b0b6 | 3540 | |
f2449db4 RS |
3541 | d = DECL_NONE; |
3542 | gfc_gobble_whitespace (); | |
3543 | ||
8fc541d3 | 3544 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
3545 | if (ch == ':') |
3546 | { | |
3547 | /* This is the successful exit condition for the loop. */ | |
8fc541d3 | 3548 | if (gfc_next_ascii_char () == ':') |
f2449db4 RS |
3549 | break; |
3550 | } | |
3551 | else if (ch == ',') | |
a8b3b0b6 | 3552 | { |
a8b3b0b6 | 3553 | gfc_gobble_whitespace (); |
8fc541d3 | 3554 | switch (gfc_peek_ascii_char ()) |
a8b3b0b6 | 3555 | { |
f2449db4 | 3556 | case 'a': |
1eee5628 TB |
3557 | gfc_next_ascii_char (); |
3558 | switch (gfc_next_ascii_char ()) | |
3559 | { | |
3560 | case 'l': | |
3561 | if (match_string_p ("locatable")) | |
3562 | { | |
3563 | /* Matched "allocatable". */ | |
3564 | d = DECL_ALLOCATABLE; | |
3565 | } | |
3566 | break; | |
3567 | ||
3568 | case 's': | |
3569 | if (match_string_p ("ynchronous")) | |
3570 | { | |
3571 | /* Matched "asynchronous". */ | |
3572 | d = DECL_ASYNCHRONOUS; | |
3573 | } | |
3574 | break; | |
3575 | } | |
fe4e525c | 3576 | break; |
f2449db4 RS |
3577 | |
3578 | case 'b': | |
a8b3b0b6 | 3579 | /* Try and match the bind(c). */ |
1eabf70a | 3580 | m = gfc_match_bind_c (NULL, true); |
129d15a3 | 3581 | if (m == MATCH_YES) |
a8b3b0b6 | 3582 | d = DECL_IS_BIND_C; |
129d15a3 JW |
3583 | else if (m == MATCH_ERROR) |
3584 | goto cleanup; | |
f2449db4 RS |
3585 | break; |
3586 | ||
be59db2d | 3587 | case 'c': |
fe4e525c TB |
3588 | gfc_next_ascii_char (); |
3589 | if ('o' != gfc_next_ascii_char ()) | |
3590 | break; | |
3591 | switch (gfc_next_ascii_char ()) | |
3592 | { | |
3593 | case 'd': | |
3594 | if (match_string_p ("imension")) | |
3595 | { | |
3596 | d = DECL_CODIMENSION; | |
3597 | break; | |
3598 | } | |
3599 | case 'n': | |
3600 | if (match_string_p ("tiguous")) | |
3601 | { | |
3602 | d = DECL_CONTIGUOUS; | |
3603 | break; | |
3604 | } | |
3605 | } | |
be59db2d TB |
3606 | break; |
3607 | ||
f2449db4 RS |
3608 | case 'd': |
3609 | if (match_string_p ("dimension")) | |
3610 | d = DECL_DIMENSION; | |
3611 | break; | |
3612 | ||
3613 | case 'e': | |
3614 | if (match_string_p ("external")) | |
3615 | d = DECL_EXTERNAL; | |
3616 | break; | |
3617 | ||
3618 | case 'i': | |
3619 | if (match_string_p ("int")) | |
3620 | { | |
8fc541d3 | 3621 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
3622 | if (ch == 'e') |
3623 | { | |
3624 | if (match_string_p ("nt")) | |
3625 | { | |
3626 | /* Matched "intent". */ | |
3627 | /* TODO: Call match_intent_spec from here. */ | |
3628 | if (gfc_match (" ( in out )") == MATCH_YES) | |
3629 | d = DECL_INOUT; | |
3630 | else if (gfc_match (" ( in )") == MATCH_YES) | |
3631 | d = DECL_IN; | |
3632 | else if (gfc_match (" ( out )") == MATCH_YES) | |
3633 | d = DECL_OUT; | |
3634 | } | |
3635 | } | |
3636 | else if (ch == 'r') | |
3637 | { | |
3638 | if (match_string_p ("insic")) | |
3639 | { | |
3640 | /* Matched "intrinsic". */ | |
3641 | d = DECL_INTRINSIC; | |
3642 | } | |
3643 | } | |
3644 | } | |
3645 | break; | |
3646 | ||
3647 | case 'o': | |
3648 | if (match_string_p ("optional")) | |
3649 | d = DECL_OPTIONAL; | |
3650 | break; | |
3651 | ||
3652 | case 'p': | |
8fc541d3 FXC |
3653 | gfc_next_ascii_char (); |
3654 | switch (gfc_next_ascii_char ()) | |
f2449db4 RS |
3655 | { |
3656 | case 'a': | |
3657 | if (match_string_p ("rameter")) | |
3658 | { | |
3659 | /* Matched "parameter". */ | |
3660 | d = DECL_PARAMETER; | |
3661 | } | |
3662 | break; | |
3663 | ||
3664 | case 'o': | |
3665 | if (match_string_p ("inter")) | |
3666 | { | |
3667 | /* Matched "pointer". */ | |
3668 | d = DECL_POINTER; | |
3669 | } | |
3670 | break; | |
3671 | ||
3672 | case 'r': | |
8fc541d3 | 3673 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
3674 | if (ch == 'i') |
3675 | { | |
3676 | if (match_string_p ("vate")) | |
3677 | { | |
3678 | /* Matched "private". */ | |
3679 | d = DECL_PRIVATE; | |
3680 | } | |
3681 | } | |
3682 | else if (ch == 'o') | |
3683 | { | |
3684 | if (match_string_p ("tected")) | |
3685 | { | |
3686 | /* Matched "protected". */ | |
3687 | d = DECL_PROTECTED; | |
3688 | } | |
3689 | } | |
3690 | break; | |
3691 | ||
3692 | case 'u': | |
3693 | if (match_string_p ("blic")) | |
3694 | { | |
3695 | /* Matched "public". */ | |
3696 | d = DECL_PUBLIC; | |
3697 | } | |
3698 | break; | |
3699 | } | |
3700 | break; | |
3701 | ||
3702 | case 's': | |
3703 | if (match_string_p ("save")) | |
3704 | d = DECL_SAVE; | |
3705 | break; | |
3706 | ||
3707 | case 't': | |
3708 | if (match_string_p ("target")) | |
3709 | d = DECL_TARGET; | |
3710 | break; | |
3711 | ||
3712 | case 'v': | |
8fc541d3 FXC |
3713 | gfc_next_ascii_char (); |
3714 | ch = gfc_next_ascii_char (); | |
f2449db4 RS |
3715 | if (ch == 'a') |
3716 | { | |
3717 | if (match_string_p ("lue")) | |
3718 | { | |
3719 | /* Matched "value". */ | |
3720 | d = DECL_VALUE; | |
3721 | } | |
3722 | } | |
3723 | else if (ch == 'o') | |
3724 | { | |
3725 | if (match_string_p ("latile")) | |
3726 | { | |
3727 | /* Matched "volatile". */ | |
3728 | d = DECL_VOLATILE; | |
3729 | } | |
3730 | } | |
3731 | break; | |
a8b3b0b6 CR |
3732 | } |
3733 | } | |
d468bcdb | 3734 | |
f2449db4 RS |
3735 | /* No double colon and no recognizable decl_type, so assume that |
3736 | we've been looking at something else the whole time. */ | |
3737 | if (d == DECL_NONE) | |
3738 | { | |
3739 | m = MATCH_NO; | |
3740 | goto cleanup; | |
3741 | } | |
d51347f9 | 3742 | |
acb388a0 JD |
3743 | /* Check to make sure any parens are paired up correctly. */ |
3744 | if (gfc_match_parens () == MATCH_ERROR) | |
3745 | { | |
3746 | m = MATCH_ERROR; | |
3747 | goto cleanup; | |
3748 | } | |
3749 | ||
6de9cd9a | 3750 | seen[d]++; |
63645982 | 3751 | seen_at[d] = gfc_current_locus; |
6de9cd9a | 3752 | |
d3a9eea2 | 3753 | if (d == DECL_DIMENSION || d == DECL_CODIMENSION) |
6de9cd9a | 3754 | { |
d3a9eea2 | 3755 | gfc_array_spec *as = NULL; |
6de9cd9a | 3756 | |
d3a9eea2 TB |
3757 | m = gfc_match_array_spec (&as, d == DECL_DIMENSION, |
3758 | d == DECL_CODIMENSION); | |
3759 | ||
3760 | if (current_as == NULL) | |
3761 | current_as = as; | |
3762 | else if (m == MATCH_YES) | |
6de9cd9a | 3763 | { |
524af0d6 | 3764 | if (!merge_array_spec (as, current_as, false)) |
63fbf586 | 3765 | m = MATCH_ERROR; |
cede9502 | 3766 | free (as); |
6de9cd9a DN |
3767 | } |
3768 | ||
be59db2d TB |
3769 | if (m == MATCH_NO) |
3770 | { | |
d3a9eea2 TB |
3771 | if (d == DECL_CODIMENSION) |
3772 | gfc_error ("Missing codimension specification at %C"); | |
3773 | else | |
3774 | gfc_error ("Missing dimension specification at %C"); | |
be59db2d TB |
3775 | m = MATCH_ERROR; |
3776 | } | |
3777 | ||
3778 | if (m == MATCH_ERROR) | |
3779 | goto cleanup; | |
3780 | } | |
6de9cd9a DN |
3781 | } |
3782 | ||
6de9cd9a DN |
3783 | /* Since we've seen a double colon, we have to be looking at an |
3784 | attr-spec. This means that we can now issue errors. */ | |
3785 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3786 | if (seen[d] > 1) | |
3787 | { | |
3788 | switch (d) | |
3789 | { | |
3790 | case DECL_ALLOCATABLE: | |
3791 | attr = "ALLOCATABLE"; | |
3792 | break; | |
1eee5628 TB |
3793 | case DECL_ASYNCHRONOUS: |
3794 | attr = "ASYNCHRONOUS"; | |
3795 | break; | |
be59db2d TB |
3796 | case DECL_CODIMENSION: |
3797 | attr = "CODIMENSION"; | |
3798 | break; | |
fe4e525c TB |
3799 | case DECL_CONTIGUOUS: |
3800 | attr = "CONTIGUOUS"; | |
3801 | break; | |
6de9cd9a DN |
3802 | case DECL_DIMENSION: |
3803 | attr = "DIMENSION"; | |
3804 | break; | |
3805 | case DECL_EXTERNAL: | |
3806 | attr = "EXTERNAL"; | |
3807 | break; | |
3808 | case DECL_IN: | |
3809 | attr = "INTENT (IN)"; | |
3810 | break; | |
3811 | case DECL_OUT: | |
3812 | attr = "INTENT (OUT)"; | |
3813 | break; | |
3814 | case DECL_INOUT: | |
3815 | attr = "INTENT (IN OUT)"; | |
3816 | break; | |
3817 | case DECL_INTRINSIC: | |
3818 | attr = "INTRINSIC"; | |
3819 | break; | |
3820 | case DECL_OPTIONAL: | |
3821 | attr = "OPTIONAL"; | |
3822 | break; | |
3823 | case DECL_PARAMETER: | |
3824 | attr = "PARAMETER"; | |
3825 | break; | |
3826 | case DECL_POINTER: | |
3827 | attr = "POINTER"; | |
3828 | break; | |
ee7e677f TB |
3829 | case DECL_PROTECTED: |
3830 | attr = "PROTECTED"; | |
3831 | break; | |
6de9cd9a DN |
3832 | case DECL_PRIVATE: |
3833 | attr = "PRIVATE"; | |
3834 | break; | |
3835 | case DECL_PUBLIC: | |
3836 | attr = "PUBLIC"; | |
3837 | break; | |
3838 | case DECL_SAVE: | |
3839 | attr = "SAVE"; | |
3840 | break; | |
3841 | case DECL_TARGET: | |
3842 | attr = "TARGET"; | |
3843 | break; | |
a8b3b0b6 CR |
3844 | case DECL_IS_BIND_C: |
3845 | attr = "IS_BIND_C"; | |
3846 | break; | |
3847 | case DECL_VALUE: | |
3848 | attr = "VALUE"; | |
3849 | break; | |
775e6c3a TB |
3850 | case DECL_VOLATILE: |
3851 | attr = "VOLATILE"; | |
3852 | break; | |
6de9cd9a | 3853 | default: |
66e4ab31 | 3854 | attr = NULL; /* This shouldn't happen. */ |
6de9cd9a DN |
3855 | } |
3856 | ||
3857 | gfc_error ("Duplicate %s attribute at %L", attr, &seen_at[d]); | |
3858 | m = MATCH_ERROR; | |
3859 | goto cleanup; | |
3860 | } | |
3861 | ||
3862 | /* Now that we've dealt with duplicate attributes, add the attributes | |
3863 | to the current attribute. */ | |
3864 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3865 | { | |
3866 | if (seen[d] == 0) | |
3867 | continue; | |
3868 | ||
3869 | if (gfc_current_state () == COMP_DERIVED | |
be59db2d TB |
3870 | && d != DECL_DIMENSION && d != DECL_CODIMENSION |
3871 | && d != DECL_POINTER && d != DECL_PRIVATE | |
fe4e525c | 3872 | && d != DECL_PUBLIC && d != DECL_CONTIGUOUS && d != DECL_NONE) |
6de9cd9a | 3873 | { |
5046aff5 PT |
3874 | if (d == DECL_ALLOCATABLE) |
3875 | { | |
524af0d6 JB |
3876 | if (!gfc_notify_std (GFC_STD_F2003, "ALLOCATABLE " |
3877 | "attribute at %C in a TYPE definition")) | |
5046aff5 PT |
3878 | { |
3879 | m = MATCH_ERROR; | |
3880 | goto cleanup; | |
3881 | } | |
636dff67 SK |
3882 | } |
3883 | else | |
5046aff5 PT |
3884 | { |
3885 | gfc_error ("Attribute at %L is not allowed in a TYPE definition", | |
d51347f9 | 3886 | &seen_at[d]); |
5046aff5 PT |
3887 | m = MATCH_ERROR; |
3888 | goto cleanup; | |
3889 | } | |
6de9cd9a DN |
3890 | } |
3891 | ||
4213f93b | 3892 | if ((d == DECL_PRIVATE || d == DECL_PUBLIC) |
636dff67 | 3893 | && gfc_current_state () != COMP_MODULE) |
4213f93b PT |
3894 | { |
3895 | if (d == DECL_PRIVATE) | |
3896 | attr = "PRIVATE"; | |
3897 | else | |
3898 | attr = "PUBLIC"; | |
d51347f9 TB |
3899 | if (gfc_current_state () == COMP_DERIVED |
3900 | && gfc_state_stack->previous | |
3901 | && gfc_state_stack->previous->state == COMP_MODULE) | |
3902 | { | |
524af0d6 JB |
3903 | if (!gfc_notify_std (GFC_STD_F2003, "Attribute %s " |
3904 | "at %L in a TYPE definition", attr, | |
3905 | &seen_at[d])) | |
d51347f9 TB |
3906 | { |
3907 | m = MATCH_ERROR; | |
3908 | goto cleanup; | |
3909 | } | |
3910 | } | |
3911 | else | |
3912 | { | |
3913 | gfc_error ("%s attribute at %L is not allowed outside of the " | |
3914 | "specification part of a module", attr, &seen_at[d]); | |
3915 | m = MATCH_ERROR; | |
3916 | goto cleanup; | |
3917 | } | |
4213f93b PT |
3918 | } |
3919 | ||
6de9cd9a DN |
3920 | switch (d) |
3921 | { | |
3922 | case DECL_ALLOCATABLE: | |
3923 | t = gfc_add_allocatable (¤t_attr, &seen_at[d]); | |
3924 | break; | |
3925 | ||
1eee5628 | 3926 | case DECL_ASYNCHRONOUS: |
524af0d6 JB |
3927 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS attribute at %C")) |
3928 | t = false; | |
1eee5628 TB |
3929 | else |
3930 | t = gfc_add_asynchronous (¤t_attr, NULL, &seen_at[d]); | |
3931 | break; | |
3932 | ||
be59db2d TB |
3933 | case DECL_CODIMENSION: |
3934 | t = gfc_add_codimension (¤t_attr, NULL, &seen_at[d]); | |
3935 | break; | |
3936 | ||
fe4e525c | 3937 | case DECL_CONTIGUOUS: |
524af0d6 JB |
3938 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS attribute at %C")) |
3939 | t = false; | |
fe4e525c TB |
3940 | else |
3941 | t = gfc_add_contiguous (¤t_attr, NULL, &seen_at[d]); | |
3942 | break; | |
3943 | ||
6de9cd9a | 3944 | case DECL_DIMENSION: |
231b2fcc | 3945 | t = gfc_add_dimension (¤t_attr, NULL, &seen_at[d]); |
6de9cd9a DN |
3946 | break; |
3947 | ||
3948 | case DECL_EXTERNAL: | |
3949 | t = gfc_add_external (¤t_attr, &seen_at[d]); | |
3950 | break; | |
3951 | ||
3952 | case DECL_IN: | |
3953 | t = gfc_add_intent (¤t_attr, INTENT_IN, &seen_at[d]); | |
3954 | break; | |
3955 | ||
3956 | case DECL_OUT: | |
3957 | t = gfc_add_intent (¤t_attr, INTENT_OUT, &seen_at[d]); | |
3958 | break; | |
3959 | ||
3960 | case DECL_INOUT: | |
3961 | t = gfc_add_intent (¤t_attr, INTENT_INOUT, &seen_at[d]); | |
3962 | break; | |
3963 | ||
3964 | case DECL_INTRINSIC: | |
3965 | t = gfc_add_intrinsic (¤t_attr, &seen_at[d]); | |
3966 | break; | |
3967 | ||
3968 | case DECL_OPTIONAL: | |
3969 | t = gfc_add_optional (¤t_attr, &seen_at[d]); | |
3970 | break; | |
3971 | ||
3972 | case DECL_PARAMETER: | |
231b2fcc | 3973 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, &seen_at[d]); |
6de9cd9a DN |
3974 | break; |
3975 | ||
3976 | case DECL_POINTER: | |
3977 | t = gfc_add_pointer (¤t_attr, &seen_at[d]); | |
3978 | break; | |
3979 | ||
ee7e677f | 3980 | case DECL_PROTECTED: |
721be0f4 SK |
3981 | if (gfc_current_state () != COMP_MODULE |
3982 | || (gfc_current_ns->proc_name | |
3983 | && gfc_current_ns->proc_name->attr.flavor != FL_MODULE)) | |
ee7e677f TB |
3984 | { |
3985 | gfc_error ("PROTECTED at %C only allowed in specification " | |
3986 | "part of a module"); | |
524af0d6 | 3987 | t = false; |
ee7e677f TB |
3988 | break; |
3989 | } | |
3990 | ||
524af0d6 JB |
3991 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED attribute at %C")) |
3992 | t = false; | |
ee7e677f TB |
3993 | else |
3994 | t = gfc_add_protected (¤t_attr, NULL, &seen_at[d]); | |
3995 | break; | |
3996 | ||
6de9cd9a | 3997 | case DECL_PRIVATE: |
231b2fcc TS |
3998 | t = gfc_add_access (¤t_attr, ACCESS_PRIVATE, NULL, |
3999 | &seen_at[d]); | |
6de9cd9a DN |
4000 | break; |
4001 | ||
4002 | case DECL_PUBLIC: | |
231b2fcc TS |
4003 | t = gfc_add_access (¤t_attr, ACCESS_PUBLIC, NULL, |
4004 | &seen_at[d]); | |
6de9cd9a DN |
4005 | break; |
4006 | ||
4007 | case DECL_SAVE: | |
80f95228 | 4008 | t = gfc_add_save (¤t_attr, SAVE_EXPLICIT, NULL, &seen_at[d]); |
6de9cd9a DN |
4009 | break; |
4010 | ||
4011 | case DECL_TARGET: | |
4012 | t = gfc_add_target (¤t_attr, &seen_at[d]); | |
4013 | break; | |
4014 | ||
a8b3b0b6 CR |
4015 | case DECL_IS_BIND_C: |
4016 | t = gfc_add_is_bind_c(¤t_attr, NULL, &seen_at[d], 0); | |
4017 | break; | |
f5acf0f2 | 4018 | |
06469efd | 4019 | case DECL_VALUE: |
524af0d6 JB |
4020 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE attribute at %C")) |
4021 | t = false; | |
06469efd PT |
4022 | else |
4023 | t = gfc_add_value (¤t_attr, NULL, &seen_at[d]); | |
4024 | break; | |
4025 | ||
775e6c3a | 4026 | case DECL_VOLATILE: |
524af0d6 JB |
4027 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE attribute at %C")) |
4028 | t = false; | |
775e6c3a TB |
4029 | else |
4030 | t = gfc_add_volatile (¤t_attr, NULL, &seen_at[d]); | |
4031 | break; | |
4032 | ||
6de9cd9a DN |
4033 | default: |
4034 | gfc_internal_error ("match_attr_spec(): Bad attribute"); | |
4035 | } | |
4036 | ||
524af0d6 | 4037 | if (!t) |
6de9cd9a DN |
4038 | { |
4039 | m = MATCH_ERROR; | |
4040 | goto cleanup; | |
4041 | } | |
4042 | } | |
4043 | ||
dab2cbf8 | 4044 | /* Since Fortran 2008 module variables implicitly have the SAVE attribute. */ |
4668d6f9 PT |
4045 | if ((gfc_current_state () == COMP_MODULE |
4046 | || gfc_current_state () == COMP_SUBMODULE) | |
4047 | && !current_attr.save | |
dab2cbf8 | 4048 | && (gfc_option.allow_std & GFC_STD_F2008) != 0) |
80f95228 JW |
4049 | current_attr.save = SAVE_IMPLICIT; |
4050 | ||
6de9cd9a DN |
4051 | colon_seen = 1; |
4052 | return MATCH_YES; | |
4053 | ||
4054 | cleanup: | |
63645982 | 4055 | gfc_current_locus = start; |
6de9cd9a DN |
4056 | gfc_free_array_spec (current_as); |
4057 | current_as = NULL; | |
4058 | return m; | |
4059 | } | |
4060 | ||
4061 | ||
a8b3b0b6 CR |
4062 | /* Set the binding label, dest_label, either with the binding label |
4063 | stored in the given gfc_typespec, ts, or if none was provided, it | |
4064 | will be the symbol name in all lower case, as required by the draft | |
4065 | (J3/04-007, section 15.4.1). If a binding label was given and | |
4066 | there is more than one argument (num_idents), it is an error. */ | |
4067 | ||
524af0d6 | 4068 | static bool |
f5acf0f2 | 4069 | set_binding_label (const char **dest_label, const char *sym_name, |
9975a30b | 4070 | int num_idents) |
a8b3b0b6 | 4071 | { |
ad4a2f64 | 4072 | if (num_idents > 1 && has_name_equals) |
a8b3b0b6 | 4073 | { |
ad4a2f64 TB |
4074 | gfc_error ("Multiple identifiers provided with " |
4075 | "single NAME= specifier at %C"); | |
524af0d6 | 4076 | return false; |
ad4a2f64 | 4077 | } |
a8b3b0b6 | 4078 | |
62603fae | 4079 | if (curr_binding_label) |
eea58adb | 4080 | /* Binding label given; store in temp holder till have sym. */ |
62603fae | 4081 | *dest_label = curr_binding_label; |
a8b3b0b6 CR |
4082 | else |
4083 | { | |
4084 | /* No binding label given, and the NAME= specifier did not exist, | |
4085 | which means there was no NAME="". */ | |
4086 | if (sym_name != NULL && has_name_equals == 0) | |
62603fae | 4087 | *dest_label = IDENTIFIER_POINTER (get_identifier (sym_name)); |
a8b3b0b6 | 4088 | } |
f5acf0f2 | 4089 | |
524af0d6 | 4090 | return true; |
a8b3b0b6 CR |
4091 | } |
4092 | ||
4093 | ||
4094 | /* Set the status of the given common block as being BIND(C) or not, | |
4095 | depending on the given parameter, is_bind_c. */ | |
4096 | ||
4097 | void | |
4098 | set_com_block_bind_c (gfc_common_head *com_block, int is_bind_c) | |
4099 | { | |
4100 | com_block->is_bind_c = is_bind_c; | |
4101 | return; | |
4102 | } | |
4103 | ||
4104 | ||
4105 | /* Verify that the given gfc_typespec is for a C interoperable type. */ | |
4106 | ||
524af0d6 | 4107 | bool |
00820a2a | 4108 | gfc_verify_c_interop (gfc_typespec *ts) |
a8b3b0b6 | 4109 | { |
bc21d315 | 4110 | if (ts->type == BT_DERIVED && ts->u.derived != NULL) |
ba3721c1 | 4111 | return (ts->u.derived->ts.is_c_interop || ts->u.derived->attr.is_bind_c) |
524af0d6 | 4112 | ? true : false; |
00820a2a | 4113 | else if (ts->type == BT_CLASS) |
524af0d6 | 4114 | return false; |
45a69325 | 4115 | else if (ts->is_c_interop != 1 && ts->type != BT_ASSUMED) |
524af0d6 | 4116 | return false; |
45a69325 | 4117 | |
524af0d6 | 4118 | return true; |
a8b3b0b6 CR |
4119 | } |
4120 | ||
4121 | ||
4122 | /* Verify that the variables of a given common block, which has been | |
4123 | defined with the attribute specifier bind(c), to be of a C | |
4124 | interoperable type. Errors will be reported here, if | |
4125 | encountered. */ | |
4126 | ||
524af0d6 | 4127 | bool |
a8b3b0b6 CR |
4128 | verify_com_block_vars_c_interop (gfc_common_head *com_block) |
4129 | { | |
4130 | gfc_symbol *curr_sym = NULL; | |
524af0d6 | 4131 | bool retval = true; |
a8b3b0b6 CR |
4132 | |
4133 | curr_sym = com_block->head; | |
f5acf0f2 | 4134 | |
a8b3b0b6 CR |
4135 | /* Make sure we have at least one symbol. */ |
4136 | if (curr_sym == NULL) | |
4137 | return retval; | |
4138 | ||
4139 | /* Here we know we have a symbol, so we'll execute this loop | |
4140 | at least once. */ | |
4141 | do | |
4142 | { | |
4143 | /* The second to last param, 1, says this is in a common block. */ | |
4144 | retval = verify_bind_c_sym (curr_sym, &(curr_sym->ts), 1, com_block); | |
4145 | curr_sym = curr_sym->common_next; | |
f5acf0f2 | 4146 | } while (curr_sym != NULL); |
a8b3b0b6 CR |
4147 | |
4148 | return retval; | |
4149 | } | |
4150 | ||
4151 | ||
4152 | /* Verify that a given BIND(C) symbol is C interoperable. If it is not, | |
4153 | an appropriate error message is reported. */ | |
4154 | ||
524af0d6 | 4155 | bool |
a8b3b0b6 CR |
4156 | verify_bind_c_sym (gfc_symbol *tmp_sym, gfc_typespec *ts, |
4157 | int is_in_common, gfc_common_head *com_block) | |
4158 | { | |
8327f9c2 | 4159 | bool bind_c_function = false; |
524af0d6 | 4160 | bool retval = true; |
d8fa96e0 | 4161 | |
8327f9c2 TB |
4162 | if (tmp_sym->attr.function && tmp_sym->attr.is_bind_c) |
4163 | bind_c_function = true; | |
4164 | ||
d8fa96e0 CR |
4165 | if (tmp_sym->attr.function && tmp_sym->result != NULL) |
4166 | { | |
4167 | tmp_sym = tmp_sym->result; | |
4168 | /* Make sure it wasn't an implicitly typed result. */ | |
4daa149b | 4169 | if (tmp_sym->attr.implicit_type && warn_c_binding_type) |
d8fa96e0 | 4170 | { |
48749dbc MLI |
4171 | gfc_warning (OPT_Wc_binding_type, |
4172 | "Implicitly declared BIND(C) function %qs at " | |
d8fa96e0 CR |
4173 | "%L may not be C interoperable", tmp_sym->name, |
4174 | &tmp_sym->declared_at); | |
4175 | tmp_sym->ts.f90_type = tmp_sym->ts.type; | |
4176 | /* Mark it as C interoperable to prevent duplicate warnings. */ | |
4177 | tmp_sym->ts.is_c_interop = 1; | |
4178 | tmp_sym->attr.is_c_interop = 1; | |
4179 | } | |
4180 | } | |
8327f9c2 | 4181 | |
a8b3b0b6 CR |
4182 | /* Here, we know we have the bind(c) attribute, so if we have |
4183 | enough type info, then verify that it's a C interop kind. | |
4184 | The info could be in the symbol already, or possibly still in | |
4185 | the given ts (current_ts), so look in both. */ | |
f5acf0f2 | 4186 | if (tmp_sym->ts.type != BT_UNKNOWN || ts->type != BT_UNKNOWN) |
a8b3b0b6 | 4187 | { |
524af0d6 | 4188 | if (!gfc_verify_c_interop (&(tmp_sym->ts))) |
a8b3b0b6 CR |
4189 | { |
4190 | /* See if we're dealing with a sym in a common block or not. */ | |
4daa149b | 4191 | if (is_in_common == 1 && warn_c_binding_type) |
a8b3b0b6 | 4192 | { |
48749dbc MLI |
4193 | gfc_warning (OPT_Wc_binding_type, |
4194 | "Variable %qs in common block %qs at %L " | |
a8b3b0b6 | 4195 | "may not be a C interoperable " |
48749dbc | 4196 | "kind though common block %qs is BIND(C)", |
a8b3b0b6 CR |
4197 | tmp_sym->name, com_block->name, |
4198 | &(tmp_sym->declared_at), com_block->name); | |
4199 | } | |
4200 | else | |
4201 | { | |
4202 | if (tmp_sym->ts.type == BT_DERIVED || ts->type == BT_DERIVED) | |
c4100eae | 4203 | gfc_error ("Type declaration %qs at %L is not C " |
a8b3b0b6 CR |
4204 | "interoperable but it is BIND(C)", |
4205 | tmp_sym->name, &(tmp_sym->declared_at)); | |
4daa149b | 4206 | else if (warn_c_binding_type) |
48749dbc | 4207 | gfc_warning (OPT_Wc_binding_type, "Variable %qs at %L " |
a8b3b0b6 | 4208 | "may not be a C interoperable " |
c4100eae | 4209 | "kind but it is BIND(C)", |
a8b3b0b6 CR |
4210 | tmp_sym->name, &(tmp_sym->declared_at)); |
4211 | } | |
4212 | } | |
f5acf0f2 | 4213 | |
a8b3b0b6 CR |
4214 | /* Variables declared w/in a common block can't be bind(c) |
4215 | since there's no way for C to see these variables, so there's | |
4216 | semantically no reason for the attribute. */ | |
4217 | if (is_in_common == 1 && tmp_sym->attr.is_bind_c == 1) | |
4218 | { | |
c4100eae | 4219 | gfc_error ("Variable %qs in common block %qs at " |
a8b3b0b6 CR |
4220 | "%L cannot be declared with BIND(C) " |
4221 | "since it is not a global", | |
4222 | tmp_sym->name, com_block->name, | |
4223 | &(tmp_sym->declared_at)); | |
524af0d6 | 4224 | retval = false; |
a8b3b0b6 | 4225 | } |
f5acf0f2 | 4226 | |
a8b3b0b6 CR |
4227 | /* Scalar variables that are bind(c) can not have the pointer |
4228 | or allocatable attributes. */ | |
4229 | if (tmp_sym->attr.is_bind_c == 1) | |
4230 | { | |
4231 | if (tmp_sym->attr.pointer == 1) | |
4232 | { | |
c4100eae | 4233 | gfc_error ("Variable %qs at %L cannot have both the " |
a8b3b0b6 CR |
4234 | "POINTER and BIND(C) attributes", |
4235 | tmp_sym->name, &(tmp_sym->declared_at)); | |
524af0d6 | 4236 | retval = false; |
a8b3b0b6 CR |
4237 | } |
4238 | ||
4239 | if (tmp_sym->attr.allocatable == 1) | |
4240 | { | |
c4100eae | 4241 | gfc_error ("Variable %qs at %L cannot have both the " |
a8b3b0b6 CR |
4242 | "ALLOCATABLE and BIND(C) attributes", |
4243 | tmp_sym->name, &(tmp_sym->declared_at)); | |
524af0d6 | 4244 | retval = false; |
a8b3b0b6 CR |
4245 | } |
4246 | ||
8327f9c2 TB |
4247 | } |
4248 | ||
4249 | /* If it is a BIND(C) function, make sure the return value is a | |
4250 | scalar value. The previous tests in this function made sure | |
4251 | the type is interoperable. */ | |
4252 | if (bind_c_function && tmp_sym->as != NULL) | |
c4100eae | 4253 | gfc_error ("Return type of BIND(C) function %qs at %L cannot " |
8327f9c2 TB |
4254 | "be an array", tmp_sym->name, &(tmp_sym->declared_at)); |
4255 | ||
4256 | /* BIND(C) functions can not return a character string. */ | |
4257 | if (bind_c_function && tmp_sym->ts.type == BT_CHARACTER) | |
bc21d315 JW |
4258 | if (tmp_sym->ts.u.cl == NULL || tmp_sym->ts.u.cl->length == NULL |
4259 | || tmp_sym->ts.u.cl->length->expr_type != EXPR_CONSTANT | |
4260 | || mpz_cmp_si (tmp_sym->ts.u.cl->length->value.integer, 1) != 0) | |
c4100eae | 4261 | gfc_error ("Return type of BIND(C) function %qs at %L cannot " |
a8b3b0b6 CR |
4262 | "be a character string", tmp_sym->name, |
4263 | &(tmp_sym->declared_at)); | |
a8b3b0b6 CR |
4264 | } |
4265 | ||
4266 | /* See if the symbol has been marked as private. If it has, make sure | |
4267 | there is no binding label and warn the user if there is one. */ | |
4268 | if (tmp_sym->attr.access == ACCESS_PRIVATE | |
62603fae | 4269 | && tmp_sym->binding_label) |
a8b3b0b6 CR |
4270 | /* Use gfc_warning_now because we won't say that the symbol fails |
4271 | just because of this. */ | |
db30e21c | 4272 | gfc_warning_now (0, "Symbol %qs at %L is marked PRIVATE but has been " |
4daa149b | 4273 | "given the binding label %qs", tmp_sym->name, |
a8b3b0b6 CR |
4274 | &(tmp_sym->declared_at), tmp_sym->binding_label); |
4275 | ||
4276 | return retval; | |
4277 | } | |
4278 | ||
4279 | ||
4280 | /* Set the appropriate fields for a symbol that's been declared as | |
4281 | BIND(C) (the is_bind_c flag and the binding label), and verify that | |
4282 | the type is C interoperable. Errors are reported by the functions | |
4283 | used to set/test these fields. */ | |
4284 | ||
524af0d6 | 4285 | bool |
a8b3b0b6 CR |
4286 | set_verify_bind_c_sym (gfc_symbol *tmp_sym, int num_idents) |
4287 | { | |
524af0d6 | 4288 | bool retval = true; |
f5acf0f2 | 4289 | |
a8b3b0b6 CR |
4290 | /* TODO: Do we need to make sure the vars aren't marked private? */ |
4291 | ||
4292 | /* Set the is_bind_c bit in symbol_attribute. */ | |
4293 | gfc_add_is_bind_c (&(tmp_sym->attr), tmp_sym->name, &gfc_current_locus, 0); | |
4294 | ||
524af0d6 JB |
4295 | if (!set_binding_label (&tmp_sym->binding_label, tmp_sym->name, num_idents)) |
4296 | return false; | |
a8b3b0b6 CR |
4297 | |
4298 | return retval; | |
4299 | } | |
4300 | ||
4301 | ||
4302 | /* Set the fields marking the given common block as BIND(C), including | |
4303 | a binding label, and report any errors encountered. */ | |
4304 | ||
524af0d6 | 4305 | bool |
a8b3b0b6 CR |
4306 | set_verify_bind_c_com_block (gfc_common_head *com_block, int num_idents) |
4307 | { | |
524af0d6 | 4308 | bool retval = true; |
f5acf0f2 | 4309 | |
a8b3b0b6 | 4310 | /* destLabel, common name, typespec (which may have binding label). */ |
524af0d6 JB |
4311 | if (!set_binding_label (&com_block->binding_label, com_block->name, |
4312 | num_idents)) | |
4313 | return false; | |
a8b3b0b6 CR |
4314 | |
4315 | /* Set the given common block (com_block) to being bind(c) (1). */ | |
4316 | set_com_block_bind_c (com_block, 1); | |
4317 | ||
4318 | return retval; | |
4319 | } | |
4320 | ||
4321 | ||
4322 | /* Retrieve the list of one or more identifiers that the given bind(c) | |
4323 | attribute applies to. */ | |
4324 | ||
524af0d6 | 4325 | bool |
a8b3b0b6 CR |
4326 | get_bind_c_idents (void) |
4327 | { | |
4328 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4329 | int num_idents = 0; | |
4330 | gfc_symbol *tmp_sym = NULL; | |
4331 | match found_id; | |
4332 | gfc_common_head *com_block = NULL; | |
f5acf0f2 | 4333 | |
a8b3b0b6 CR |
4334 | if (gfc_match_name (name) == MATCH_YES) |
4335 | { | |
4336 | found_id = MATCH_YES; | |
4337 | gfc_get_ha_symbol (name, &tmp_sym); | |
4338 | } | |
4339 | else if (match_common_name (name) == MATCH_YES) | |
4340 | { | |
4341 | found_id = MATCH_YES; | |
4342 | com_block = gfc_get_common (name, 0); | |
4343 | } | |
4344 | else | |
4345 | { | |
4346 | gfc_error ("Need either entity or common block name for " | |
4347 | "attribute specification statement at %C"); | |
524af0d6 | 4348 | return false; |
a8b3b0b6 | 4349 | } |
f5acf0f2 | 4350 | |
a8b3b0b6 CR |
4351 | /* Save the current identifier and look for more. */ |
4352 | do | |
4353 | { | |
4354 | /* Increment the number of identifiers found for this spec stmt. */ | |
4355 | num_idents++; | |
4356 | ||
4357 | /* Make sure we have a sym or com block, and verify that it can | |
4358 | be bind(c). Set the appropriate field(s) and look for more | |
4359 | identifiers. */ | |
f5acf0f2 | 4360 | if (tmp_sym != NULL || com_block != NULL) |
a8b3b0b6 CR |
4361 | { |
4362 | if (tmp_sym != NULL) | |
4363 | { | |
524af0d6 JB |
4364 | if (!set_verify_bind_c_sym (tmp_sym, num_idents)) |
4365 | return false; | |
a8b3b0b6 CR |
4366 | } |
4367 | else | |
4368 | { | |
524af0d6 JB |
4369 | if (!set_verify_bind_c_com_block (com_block, num_idents)) |
4370 | return false; | |
a8b3b0b6 | 4371 | } |
f5acf0f2 | 4372 | |
a8b3b0b6 CR |
4373 | /* Look to see if we have another identifier. */ |
4374 | tmp_sym = NULL; | |
4375 | if (gfc_match_eos () == MATCH_YES) | |
4376 | found_id = MATCH_NO; | |
4377 | else if (gfc_match_char (',') != MATCH_YES) | |
4378 | found_id = MATCH_NO; | |
4379 | else if (gfc_match_name (name) == MATCH_YES) | |
4380 | { | |
4381 | found_id = MATCH_YES; | |
4382 | gfc_get_ha_symbol (name, &tmp_sym); | |
4383 | } | |
4384 | else if (match_common_name (name) == MATCH_YES) | |
4385 | { | |
4386 | found_id = MATCH_YES; | |
4387 | com_block = gfc_get_common (name, 0); | |
4388 | } | |
4389 | else | |
4390 | { | |
4391 | gfc_error ("Missing entity or common block name for " | |
4392 | "attribute specification statement at %C"); | |
524af0d6 | 4393 | return false; |
a8b3b0b6 CR |
4394 | } |
4395 | } | |
4396 | else | |
4397 | { | |
4398 | gfc_internal_error ("Missing symbol"); | |
4399 | } | |
4400 | } while (found_id == MATCH_YES); | |
4401 | ||
4402 | /* if we get here we were successful */ | |
524af0d6 | 4403 | return true; |
a8b3b0b6 CR |
4404 | } |
4405 | ||
4406 | ||
4407 | /* Try and match a BIND(C) attribute specification statement. */ | |
f5acf0f2 | 4408 | |
a8b3b0b6 CR |
4409 | match |
4410 | gfc_match_bind_c_stmt (void) | |
4411 | { | |
4412 | match found_match = MATCH_NO; | |
4413 | gfc_typespec *ts; | |
4414 | ||
4415 | ts = ¤t_ts; | |
f5acf0f2 | 4416 | |
a8b3b0b6 CR |
4417 | /* This may not be necessary. */ |
4418 | gfc_clear_ts (ts); | |
4419 | /* Clear the temporary binding label holder. */ | |
62603fae | 4420 | curr_binding_label = NULL; |
a8b3b0b6 CR |
4421 | |
4422 | /* Look for the bind(c). */ | |
1eabf70a | 4423 | found_match = gfc_match_bind_c (NULL, true); |
a8b3b0b6 CR |
4424 | |
4425 | if (found_match == MATCH_YES) | |
4426 | { | |
878cdb7b TB |
4427 | if (!gfc_notify_std (GFC_STD_F2003, "BIND(C) statement at %C")) |
4428 | return MATCH_ERROR; | |
4429 | ||
a8b3b0b6 CR |
4430 | /* Look for the :: now, but it is not required. */ |
4431 | gfc_match (" :: "); | |
4432 | ||
4433 | /* Get the identifier(s) that needs to be updated. This may need to | |
4434 | change to hand the flag(s) for the attr specified so all identifiers | |
4435 | found can have all appropriate parts updated (assuming that the same | |
4436 | spec stmt can have multiple attrs, such as both bind(c) and | |
4437 | allocatable...). */ | |
524af0d6 | 4438 | if (!get_bind_c_idents ()) |
a8b3b0b6 CR |
4439 | /* Error message should have printed already. */ |
4440 | return MATCH_ERROR; | |
4441 | } | |
4442 | ||
4443 | return found_match; | |
4444 | } | |
4445 | ||
4446 | ||
6de9cd9a DN |
4447 | /* Match a data declaration statement. */ |
4448 | ||
4449 | match | |
4450 | gfc_match_data_decl (void) | |
4451 | { | |
4452 | gfc_symbol *sym; | |
4453 | match m; | |
949d5b72 | 4454 | int elem; |
6de9cd9a | 4455 | |
a8b3b0b6 | 4456 | num_idents_on_line = 0; |
f5acf0f2 | 4457 | |
e74f1cc8 | 4458 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
6de9cd9a DN |
4459 | if (m != MATCH_YES) |
4460 | return m; | |
4461 | ||
2e23972e JW |
4462 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
4463 | && gfc_current_state () != COMP_DERIVED) | |
6de9cd9a | 4464 | { |
bc21d315 | 4465 | sym = gfc_use_derived (current_ts.u.derived); |
6de9cd9a DN |
4466 | |
4467 | if (sym == NULL) | |
4468 | { | |
4469 | m = MATCH_ERROR; | |
4470 | goto cleanup; | |
4471 | } | |
4472 | ||
bc21d315 | 4473 | current_ts.u.derived = sym; |
6de9cd9a DN |
4474 | } |
4475 | ||
4476 | m = match_attr_spec (); | |
4477 | if (m == MATCH_ERROR) | |
4478 | { | |
4479 | m = MATCH_NO; | |
4480 | goto cleanup; | |
4481 | } | |
4482 | ||
8b704316 PT |
4483 | if (current_ts.type == BT_CLASS |
4484 | && current_ts.u.derived->attr.unlimited_polymorphic) | |
4485 | goto ok; | |
4486 | ||
2e23972e JW |
4487 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
4488 | && current_ts.u.derived->components == NULL | |
bc21d315 | 4489 | && !current_ts.u.derived->attr.zero_comp) |
6de9cd9a DN |
4490 | { |
4491 | ||
4492 | if (current_attr.pointer && gfc_current_state () == COMP_DERIVED) | |
4493 | goto ok; | |
4494 | ||
bc21d315 | 4495 | gfc_find_symbol (current_ts.u.derived->name, |
dd8b9dde | 4496 | current_ts.u.derived->ns, 1, &sym); |
6de9cd9a | 4497 | |
976e21f6 | 4498 | /* Any symbol that we find had better be a type definition |
636dff67 | 4499 | which has its components defined. */ |
976e21f6 | 4500 | if (sym != NULL && sym->attr.flavor == FL_DERIVED |
bc21d315 JW |
4501 | && (current_ts.u.derived->components != NULL |
4502 | || current_ts.u.derived->attr.zero_comp)) | |
6de9cd9a DN |
4503 | goto ok; |
4504 | ||
a1b80ec7 JW |
4505 | gfc_error ("Derived type at %C has not been previously defined " |
4506 | "and so cannot appear in a derived type definition"); | |
4507 | m = MATCH_ERROR; | |
4508 | goto cleanup; | |
6de9cd9a DN |
4509 | } |
4510 | ||
4511 | ok: | |
4512 | /* If we have an old-style character declaration, and no new-style | |
4513 | attribute specifications, then there a comma is optional between | |
4514 | the type specification and the variable list. */ | |
4515 | if (m == MATCH_NO && current_ts.type == BT_CHARACTER && old_char_selector) | |
4516 | gfc_match_char (','); | |
4517 | ||
949d5b72 PT |
4518 | /* Give the types/attributes to symbols that follow. Give the element |
4519 | a number so that repeat character length expressions can be copied. */ | |
4520 | elem = 1; | |
6de9cd9a DN |
4521 | for (;;) |
4522 | { | |
a8b3b0b6 | 4523 | num_idents_on_line++; |
949d5b72 | 4524 | m = variable_decl (elem++); |
6de9cd9a DN |
4525 | if (m == MATCH_ERROR) |
4526 | goto cleanup; | |
4527 | if (m == MATCH_NO) | |
4528 | break; | |
4529 | ||
4530 | if (gfc_match_eos () == MATCH_YES) | |
4531 | goto cleanup; | |
4532 | if (gfc_match_char (',') != MATCH_YES) | |
4533 | break; | |
4534 | } | |
4535 | ||
0f447a6e | 4536 | if (!gfc_error_flag_test ()) |
8f81c3c6 | 4537 | gfc_error ("Syntax error in data declaration at %C"); |
6de9cd9a DN |
4538 | m = MATCH_ERROR; |
4539 | ||
a9f6f1f2 JD |
4540 | gfc_free_data_all (gfc_current_ns); |
4541 | ||
6de9cd9a DN |
4542 | cleanup: |
4543 | gfc_free_array_spec (current_as); | |
4544 | current_as = NULL; | |
4545 | return m; | |
4546 | } | |
4547 | ||
4548 | ||
4549 | /* Match a prefix associated with a function or subroutine | |
4550 | declaration. If the typespec pointer is nonnull, then a typespec | |
4551 | can be matched. Note that if nothing matches, MATCH_YES is | |
4552 | returned (the null string was matched). */ | |
4553 | ||
1c8bcdf7 PT |
4554 | match |
4555 | gfc_match_prefix (gfc_typespec *ts) | |
6de9cd9a | 4556 | { |
7389bce6 | 4557 | bool seen_type; |
e6c14898 DK |
4558 | bool seen_impure; |
4559 | bool found_prefix; | |
6de9cd9a DN |
4560 | |
4561 | gfc_clear_attr (¤t_attr); | |
e6c14898 DK |
4562 | seen_type = false; |
4563 | seen_impure = false; | |
6de9cd9a | 4564 | |
3df684e2 DK |
4565 | gcc_assert (!gfc_matching_prefix); |
4566 | gfc_matching_prefix = true; | |
f37e928c | 4567 | |
e6c14898 | 4568 | do |
6de9cd9a | 4569 | { |
e6c14898 | 4570 | found_prefix = false; |
6de9cd9a | 4571 | |
e6c14898 DK |
4572 | if (!seen_type && ts != NULL |
4573 | && gfc_match_decl_type_spec (ts, 0) == MATCH_YES | |
4574 | && gfc_match_space () == MATCH_YES) | |
4575 | { | |
6de9cd9a | 4576 | |
e6c14898 DK |
4577 | seen_type = true; |
4578 | found_prefix = true; | |
4579 | } | |
4580 | ||
4581 | if (gfc_match ("elemental% ") == MATCH_YES) | |
4582 | { | |
524af0d6 | 4583 | if (!gfc_add_elemental (¤t_attr, NULL)) |
e6c14898 DK |
4584 | goto error; |
4585 | ||
4586 | found_prefix = true; | |
4587 | } | |
4588 | ||
4589 | if (gfc_match ("pure% ") == MATCH_YES) | |
4590 | { | |
524af0d6 | 4591 | if (!gfc_add_pure (¤t_attr, NULL)) |
e6c14898 DK |
4592 | goto error; |
4593 | ||
4594 | found_prefix = true; | |
4595 | } | |
6de9cd9a | 4596 | |
e6c14898 DK |
4597 | if (gfc_match ("recursive% ") == MATCH_YES) |
4598 | { | |
524af0d6 | 4599 | if (!gfc_add_recursive (¤t_attr, NULL)) |
e6c14898 DK |
4600 | goto error; |
4601 | ||
4602 | found_prefix = true; | |
4603 | } | |
4604 | ||
4605 | /* IMPURE is a somewhat special case, as it needs not set an actual | |
4606 | attribute but rather only prevents ELEMENTAL routines from being | |
4607 | automatically PURE. */ | |
4608 | if (gfc_match ("impure% ") == MATCH_YES) | |
4609 | { | |
524af0d6 | 4610 | if (!gfc_notify_std (GFC_STD_F2008, "IMPURE procedure at %C")) |
e6c14898 DK |
4611 | goto error; |
4612 | ||
4613 | seen_impure = true; | |
4614 | found_prefix = true; | |
4615 | } | |
6de9cd9a | 4616 | } |
e6c14898 | 4617 | while (found_prefix); |
6de9cd9a | 4618 | |
e6c14898 DK |
4619 | /* IMPURE and PURE must not both appear, of course. */ |
4620 | if (seen_impure && current_attr.pure) | |
6de9cd9a | 4621 | { |
e6c14898 DK |
4622 | gfc_error ("PURE and IMPURE must not appear both at %C"); |
4623 | goto error; | |
6de9cd9a DN |
4624 | } |
4625 | ||
e6c14898 DK |
4626 | /* If IMPURE it not seen but the procedure is ELEMENTAL, mark it as PURE. */ |
4627 | if (!seen_impure && current_attr.elemental && !current_attr.pure) | |
6de9cd9a | 4628 | { |
524af0d6 | 4629 | if (!gfc_add_pure (¤t_attr, NULL)) |
f37e928c | 4630 | goto error; |
6de9cd9a DN |
4631 | } |
4632 | ||
4633 | /* At this point, the next item is not a prefix. */ | |
3df684e2 | 4634 | gcc_assert (gfc_matching_prefix); |
4668d6f9 PT |
4635 | |
4636 | /* MODULE should be the last prefix before FUNCTION or SUBROUTINE. | |
4637 | Since this is a prefix like PURE, ELEMENTAL, etc., having a | |
4638 | corresponding attribute seems natural and distinguishes these | |
4639 | procedures from procedure types of PROC_MODULE, which these are | |
4640 | as well. */ | |
4641 | if ((gfc_current_state () == COMP_INTERFACE | |
4642 | || gfc_current_state () == COMP_CONTAINS) | |
4643 | && gfc_match ("module% ") == MATCH_YES) | |
4644 | { | |
4645 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE prefix at %C")) | |
4646 | goto error; | |
4647 | else | |
4648 | current_attr.module_procedure = 1; | |
4649 | } | |
4650 | ||
3df684e2 | 4651 | gfc_matching_prefix = false; |
6de9cd9a | 4652 | return MATCH_YES; |
f37e928c DK |
4653 | |
4654 | error: | |
3df684e2 DK |
4655 | gcc_assert (gfc_matching_prefix); |
4656 | gfc_matching_prefix = false; | |
f37e928c | 4657 | return MATCH_ERROR; |
6de9cd9a DN |
4658 | } |
4659 | ||
4660 | ||
1c8bcdf7 | 4661 | /* Copy attributes matched by gfc_match_prefix() to attributes on a symbol. */ |
6de9cd9a | 4662 | |
524af0d6 | 4663 | static bool |
636dff67 | 4664 | copy_prefix (symbol_attribute *dest, locus *where) |
6de9cd9a | 4665 | { |
524af0d6 JB |
4666 | if (current_attr.pure && !gfc_add_pure (dest, where)) |
4667 | return false; | |
6de9cd9a | 4668 | |
524af0d6 JB |
4669 | if (current_attr.elemental && !gfc_add_elemental (dest, where)) |
4670 | return false; | |
6de9cd9a | 4671 | |
524af0d6 JB |
4672 | if (current_attr.recursive && !gfc_add_recursive (dest, where)) |
4673 | return false; | |
6de9cd9a | 4674 | |
524af0d6 | 4675 | return true; |
6de9cd9a DN |
4676 | } |
4677 | ||
4678 | ||
4679 | /* Match a formal argument list. */ | |
4680 | ||
4681 | match | |
636dff67 | 4682 | gfc_match_formal_arglist (gfc_symbol *progname, int st_flag, int null_flag) |
6de9cd9a DN |
4683 | { |
4684 | gfc_formal_arglist *head, *tail, *p, *q; | |
4685 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4686 | gfc_symbol *sym; | |
4687 | match m; | |
4668d6f9 | 4688 | gfc_formal_arglist *formal = NULL; |
6de9cd9a DN |
4689 | |
4690 | head = tail = NULL; | |
4691 | ||
4668d6f9 PT |
4692 | /* Keep the interface formal argument list and null it so that the |
4693 | matching for the new declaration can be done. The numbers and | |
4694 | names of the arguments are checked here. The interface formal | |
4695 | arguments are retained in formal_arglist and the characteristics | |
4696 | are compared in resolve.c(resolve_fl_procedure). See the remark | |
4697 | in get_proc_name about the eventual need to copy the formal_arglist | |
4698 | and populate the formal namespace of the interface symbol. */ | |
4699 | if (progname->attr.module_procedure | |
4700 | && progname->attr.host_assoc) | |
4701 | { | |
4702 | formal = progname->formal; | |
4703 | progname->formal = NULL; | |
4704 | } | |
4705 | ||
6de9cd9a DN |
4706 | if (gfc_match_char ('(') != MATCH_YES) |
4707 | { | |
4708 | if (null_flag) | |
4709 | goto ok; | |
4710 | return MATCH_NO; | |
4711 | } | |
4712 | ||
4713 | if (gfc_match_char (')') == MATCH_YES) | |
4714 | goto ok; | |
4715 | ||
4716 | for (;;) | |
4717 | { | |
4718 | if (gfc_match_char ('*') == MATCH_YES) | |
9362a03b JW |
4719 | { |
4720 | sym = NULL; | |
524af0d6 JB |
4721 | if (!gfc_notify_std (GFC_STD_F95_OBS, "Alternate-return argument " |
4722 | "at %C")) | |
9362a03b JW |
4723 | { |
4724 | m = MATCH_ERROR; | |
4725 | goto cleanup; | |
4726 | } | |
4727 | } | |
6de9cd9a DN |
4728 | else |
4729 | { | |
4730 | m = gfc_match_name (name); | |
4731 | if (m != MATCH_YES) | |
4732 | goto cleanup; | |
4733 | ||
4734 | if (gfc_get_symbol (name, NULL, &sym)) | |
4735 | goto cleanup; | |
4736 | } | |
4737 | ||
4738 | p = gfc_get_formal_arglist (); | |
4739 | ||
4740 | if (head == NULL) | |
4741 | head = tail = p; | |
4742 | else | |
4743 | { | |
4744 | tail->next = p; | |
4745 | tail = p; | |
4746 | } | |
4747 | ||
4748 | tail->sym = sym; | |
4749 | ||
4750 | /* We don't add the VARIABLE flavor because the name could be a | |
636dff67 SK |
4751 | dummy procedure. We don't apply these attributes to formal |
4752 | arguments of statement functions. */ | |
6de9cd9a | 4753 | if (sym != NULL && !st_flag |
524af0d6 JB |
4754 | && (!gfc_add_dummy(&sym->attr, sym->name, NULL) |
4755 | || !gfc_missing_attr (&sym->attr, NULL))) | |
6de9cd9a DN |
4756 | { |
4757 | m = MATCH_ERROR; | |
4758 | goto cleanup; | |
4759 | } | |
4760 | ||
4761 | /* The name of a program unit can be in a different namespace, | |
636dff67 SK |
4762 | so check for it explicitly. After the statement is accepted, |
4763 | the name is checked for especially in gfc_get_symbol(). */ | |
6de9cd9a DN |
4764 | if (gfc_new_block != NULL && sym != NULL |
4765 | && strcmp (sym->name, gfc_new_block->name) == 0) | |
4766 | { | |
c4100eae | 4767 | gfc_error ("Name %qs at %C is the name of the procedure", |
6de9cd9a DN |
4768 | sym->name); |
4769 | m = MATCH_ERROR; | |
4770 | goto cleanup; | |
4771 | } | |
4772 | ||
4773 | if (gfc_match_char (')') == MATCH_YES) | |
4774 | goto ok; | |
4775 | ||
4776 | m = gfc_match_char (','); | |
4777 | if (m != MATCH_YES) | |
4778 | { | |
4779 | gfc_error ("Unexpected junk in formal argument list at %C"); | |
4780 | goto cleanup; | |
4781 | } | |
4782 | } | |
4783 | ||
4784 | ok: | |
4785 | /* Check for duplicate symbols in the formal argument list. */ | |
4786 | if (head != NULL) | |
4787 | { | |
4788 | for (p = head; p->next; p = p->next) | |
4789 | { | |
4790 | if (p->sym == NULL) | |
4791 | continue; | |
4792 | ||
4793 | for (q = p->next; q; q = q->next) | |
4794 | if (p->sym == q->sym) | |
4795 | { | |
c4100eae | 4796 | gfc_error ("Duplicate symbol %qs in formal argument list " |
636dff67 | 4797 | "at %C", p->sym->name); |
6de9cd9a DN |
4798 | |
4799 | m = MATCH_ERROR; | |
4800 | goto cleanup; | |
4801 | } | |
4802 | } | |
4803 | } | |
4804 | ||
524af0d6 | 4805 | if (!gfc_add_explicit_interface (progname, IFSRC_DECL, head, NULL)) |
6de9cd9a DN |
4806 | { |
4807 | m = MATCH_ERROR; | |
4808 | goto cleanup; | |
4809 | } | |
4810 | ||
4668d6f9 PT |
4811 | if (formal) |
4812 | { | |
4813 | for (p = formal, q = head; p && q; p = p->next, q = q->next) | |
4814 | { | |
4815 | if ((p->next != NULL && q->next == NULL) | |
4816 | || (p->next == NULL && q->next != NULL)) | |
4817 | gfc_error_now ("Mismatch in number of MODULE PROCEDURE " | |
4818 | "formal arguments at %C"); | |
4819 | else if ((p->sym == NULL && q->sym == NULL) | |
4820 | || strcmp (p->sym->name, q->sym->name) == 0) | |
4821 | continue; | |
4822 | else | |
4823 | gfc_error_now ("Mismatch in MODULE PROCEDURE formal " | |
4824 | "argument names (%s/%s) at %C", | |
4825 | p->sym->name, q->sym->name); | |
4826 | } | |
4827 | } | |
4828 | ||
6de9cd9a DN |
4829 | return MATCH_YES; |
4830 | ||
4831 | cleanup: | |
4832 | gfc_free_formal_arglist (head); | |
4833 | return m; | |
4834 | } | |
4835 | ||
4836 | ||
4837 | /* Match a RESULT specification following a function declaration or | |
4838 | ENTRY statement. Also matches the end-of-statement. */ | |
4839 | ||
4840 | static match | |
66e4ab31 | 4841 | match_result (gfc_symbol *function, gfc_symbol **result) |
6de9cd9a DN |
4842 | { |
4843 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4844 | gfc_symbol *r; | |
4845 | match m; | |
4846 | ||
4847 | if (gfc_match (" result (") != MATCH_YES) | |
4848 | return MATCH_NO; | |
4849 | ||
4850 | m = gfc_match_name (name); | |
4851 | if (m != MATCH_YES) | |
4852 | return m; | |
4853 | ||
a8b3b0b6 CR |
4854 | /* Get the right paren, and that's it because there could be the |
4855 | bind(c) attribute after the result clause. */ | |
524af0d6 | 4856 | if (gfc_match_char (')') != MATCH_YES) |
6de9cd9a | 4857 | { |
a8b3b0b6 | 4858 | /* TODO: should report the missing right paren here. */ |
6de9cd9a DN |
4859 | return MATCH_ERROR; |
4860 | } | |
4861 | ||
4862 | if (strcmp (function->name, name) == 0) | |
4863 | { | |
636dff67 | 4864 | gfc_error ("RESULT variable at %C must be different than function name"); |
6de9cd9a DN |
4865 | return MATCH_ERROR; |
4866 | } | |
4867 | ||
4868 | if (gfc_get_symbol (name, NULL, &r)) | |
4869 | return MATCH_ERROR; | |
4870 | ||
524af0d6 | 4871 | if (!gfc_add_result (&r->attr, r->name, NULL)) |
6de9cd9a DN |
4872 | return MATCH_ERROR; |
4873 | ||
4874 | *result = r; | |
4875 | ||
4876 | return MATCH_YES; | |
4877 | } | |
4878 | ||
4879 | ||
a8b3b0b6 CR |
4880 | /* Match a function suffix, which could be a combination of a result |
4881 | clause and BIND(C), either one, or neither. The draft does not | |
4882 | require them to come in a specific order. */ | |
4883 | ||
4884 | match | |
4885 | gfc_match_suffix (gfc_symbol *sym, gfc_symbol **result) | |
4886 | { | |
4887 | match is_bind_c; /* Found bind(c). */ | |
4888 | match is_result; /* Found result clause. */ | |
4889 | match found_match; /* Status of whether we've found a good match. */ | |
8fc541d3 | 4890 | char peek_char; /* Character we're going to peek at. */ |
1eabf70a | 4891 | bool allow_binding_name; |
a8b3b0b6 CR |
4892 | |
4893 | /* Initialize to having found nothing. */ | |
4894 | found_match = MATCH_NO; | |
f5acf0f2 | 4895 | is_bind_c = MATCH_NO; |
a8b3b0b6 CR |
4896 | is_result = MATCH_NO; |
4897 | ||
4898 | /* Get the next char to narrow between result and bind(c). */ | |
4899 | gfc_gobble_whitespace (); | |
8fc541d3 | 4900 | peek_char = gfc_peek_ascii_char (); |
a8b3b0b6 | 4901 | |
1eabf70a TB |
4902 | /* C binding names are not allowed for internal procedures. */ |
4903 | if (gfc_current_state () == COMP_CONTAINS | |
4904 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
4905 | allow_binding_name = false; | |
4906 | else | |
4907 | allow_binding_name = true; | |
4908 | ||
a8b3b0b6 CR |
4909 | switch (peek_char) |
4910 | { | |
4911 | case 'r': | |
4912 | /* Look for result clause. */ | |
4913 | is_result = match_result (sym, result); | |
4914 | if (is_result == MATCH_YES) | |
4915 | { | |
4916 | /* Now see if there is a bind(c) after it. */ | |
1eabf70a | 4917 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
4918 | /* We've found the result clause and possibly bind(c). */ |
4919 | found_match = MATCH_YES; | |
4920 | } | |
4921 | else | |
4922 | /* This should only be MATCH_ERROR. */ | |
f5acf0f2 | 4923 | found_match = is_result; |
a8b3b0b6 CR |
4924 | break; |
4925 | case 'b': | |
4926 | /* Look for bind(c) first. */ | |
1eabf70a | 4927 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
4928 | if (is_bind_c == MATCH_YES) |
4929 | { | |
4930 | /* Now see if a result clause followed it. */ | |
4931 | is_result = match_result (sym, result); | |
4932 | found_match = MATCH_YES; | |
4933 | } | |
4934 | else | |
4935 | { | |
4936 | /* Should only be a MATCH_ERROR if we get here after seeing 'b'. */ | |
4937 | found_match = MATCH_ERROR; | |
4938 | } | |
4939 | break; | |
4940 | default: | |
4941 | gfc_error ("Unexpected junk after function declaration at %C"); | |
4942 | found_match = MATCH_ERROR; | |
4943 | break; | |
4944 | } | |
4945 | ||
a8b3b0b6 | 4946 | if (is_bind_c == MATCH_YES) |
01f4fff1 | 4947 | { |
1eabf70a | 4948 | /* Fortran 2008 draft allows BIND(C) for internal procedures. */ |
01f4fff1 | 4949 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 4950 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
524af0d6 JB |
4951 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
4952 | "at %L may not be specified for an internal " | |
4953 | "procedure", &gfc_current_locus)) | |
1eabf70a TB |
4954 | return MATCH_ERROR; |
4955 | ||
524af0d6 | 4956 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, &gfc_current_locus, 1)) |
01f4fff1 TB |
4957 | return MATCH_ERROR; |
4958 | } | |
f5acf0f2 | 4959 | |
a8b3b0b6 CR |
4960 | return found_match; |
4961 | } | |
4962 | ||
4963 | ||
3070bab4 JW |
4964 | /* Procedure pointer return value without RESULT statement: |
4965 | Add "hidden" result variable named "ppr@". */ | |
4966 | ||
524af0d6 | 4967 | static bool |
3070bab4 JW |
4968 | add_hidden_procptr_result (gfc_symbol *sym) |
4969 | { | |
4970 | bool case1,case2; | |
4971 | ||
4972 | if (gfc_notification_std (GFC_STD_F2003) == ERROR) | |
524af0d6 | 4973 | return false; |
3070bab4 JW |
4974 | |
4975 | /* First usage case: PROCEDURE and EXTERNAL statements. */ | |
4976 | case1 = gfc_current_state () == COMP_FUNCTION && gfc_current_block () | |
4977 | && strcmp (gfc_current_block ()->name, sym->name) == 0 | |
4978 | && sym->attr.external; | |
4979 | /* Second usage case: INTERFACE statements. */ | |
4980 | case2 = gfc_current_state () == COMP_INTERFACE && gfc_state_stack->previous | |
4981 | && gfc_state_stack->previous->state == COMP_FUNCTION | |
4982 | && strcmp (gfc_state_stack->previous->sym->name, sym->name) == 0; | |
4983 | ||
4984 | if (case1 || case2) | |
4985 | { | |
4986 | gfc_symtree *stree; | |
4987 | if (case1) | |
08a6b8e0 | 4988 | gfc_get_sym_tree ("ppr@", gfc_current_ns, &stree, false); |
3070bab4 | 4989 | else if (case2) |
c73b6478 JW |
4990 | { |
4991 | gfc_symtree *st2; | |
08a6b8e0 | 4992 | gfc_get_sym_tree ("ppr@", gfc_current_ns->parent, &stree, false); |
c73b6478 JW |
4993 | st2 = gfc_new_symtree (&gfc_current_ns->sym_root, "ppr@"); |
4994 | st2->n.sym = stree->n.sym; | |
4995 | } | |
3070bab4 JW |
4996 | sym->result = stree->n.sym; |
4997 | ||
4998 | sym->result->attr.proc_pointer = sym->attr.proc_pointer; | |
4999 | sym->result->attr.pointer = sym->attr.pointer; | |
5000 | sym->result->attr.external = sym->attr.external; | |
5001 | sym->result->attr.referenced = sym->attr.referenced; | |
fc9c6e5d | 5002 | sym->result->ts = sym->ts; |
3070bab4 JW |
5003 | sym->attr.proc_pointer = 0; |
5004 | sym->attr.pointer = 0; | |
5005 | sym->attr.external = 0; | |
5006 | if (sym->result->attr.external && sym->result->attr.pointer) | |
5007 | { | |
5008 | sym->result->attr.pointer = 0; | |
5009 | sym->result->attr.proc_pointer = 1; | |
5010 | } | |
5011 | ||
5012 | return gfc_add_result (&sym->result->attr, sym->result->name, NULL); | |
5013 | } | |
5014 | /* POINTER after PROCEDURE/EXTERNAL/INTERFACE statement. */ | |
5015 | else if (sym->attr.function && !sym->attr.external && sym->attr.pointer | |
5016 | && sym->result && sym->result != sym && sym->result->attr.external | |
5017 | && sym == gfc_current_ns->proc_name | |
5018 | && sym == sym->result->ns->proc_name | |
5019 | && strcmp ("ppr@", sym->result->name) == 0) | |
5020 | { | |
5021 | sym->result->attr.proc_pointer = 1; | |
5022 | sym->attr.pointer = 0; | |
524af0d6 | 5023 | return true; |
3070bab4 JW |
5024 | } |
5025 | else | |
524af0d6 | 5026 | return false; |
3070bab4 JW |
5027 | } |
5028 | ||
5029 | ||
713485cc JW |
5030 | /* Match the interface for a PROCEDURE declaration, |
5031 | including brackets (R1212). */ | |
69773742 JW |
5032 | |
5033 | static match | |
713485cc | 5034 | match_procedure_interface (gfc_symbol **proc_if) |
69773742 JW |
5035 | { |
5036 | match m; | |
3276e0b3 | 5037 | gfc_symtree *st; |
69773742 | 5038 | locus old_loc, entry_loc; |
3276e0b3 PT |
5039 | gfc_namespace *old_ns = gfc_current_ns; |
5040 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
69773742 | 5041 | |
3276e0b3 | 5042 | old_loc = entry_loc = gfc_current_locus; |
69773742 JW |
5043 | gfc_clear_ts (¤t_ts); |
5044 | ||
5045 | if (gfc_match (" (") != MATCH_YES) | |
5046 | { | |
5047 | gfc_current_locus = entry_loc; | |
5048 | return MATCH_NO; | |
5049 | } | |
5050 | ||
5051 | /* Get the type spec. for the procedure interface. */ | |
5052 | old_loc = gfc_current_locus; | |
e74f1cc8 | 5053 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
f4256439 | 5054 | gfc_gobble_whitespace (); |
8fc541d3 | 5055 | if (m == MATCH_YES || (m == MATCH_NO && gfc_peek_ascii_char () == ')')) |
69773742 JW |
5056 | goto got_ts; |
5057 | ||
5058 | if (m == MATCH_ERROR) | |
5059 | return m; | |
5060 | ||
3276e0b3 | 5061 | /* Procedure interface is itself a procedure. */ |
69773742 | 5062 | gfc_current_locus = old_loc; |
3276e0b3 | 5063 | m = gfc_match_name (name); |
69773742 | 5064 | |
3276e0b3 PT |
5065 | /* First look to see if it is already accessible in the current |
5066 | namespace because it is use associated or contained. */ | |
5067 | st = NULL; | |
5068 | if (gfc_find_sym_tree (name, NULL, 0, &st)) | |
5069 | return MATCH_ERROR; | |
5070 | ||
5071 | /* If it is still not found, then try the parent namespace, if it | |
5072 | exists and create the symbol there if it is still not found. */ | |
5073 | if (gfc_current_ns->parent) | |
5074 | gfc_current_ns = gfc_current_ns->parent; | |
5075 | if (st == NULL && gfc_get_ha_sym_tree (name, &st)) | |
5076 | return MATCH_ERROR; | |
5077 | ||
5078 | gfc_current_ns = old_ns; | |
5079 | *proc_if = st->n.sym; | |
69773742 | 5080 | |
713485cc | 5081 | if (*proc_if) |
69773742 | 5082 | { |
713485cc | 5083 | (*proc_if)->refs++; |
bb343a6c TB |
5084 | /* Resolve interface if possible. That way, attr.procedure is only set |
5085 | if it is declared by a later procedure-declaration-stmt, which is | |
0e8d854e | 5086 | invalid per F08:C1216 (cf. resolve_procedure_interface). */ |
713485cc JW |
5087 | while ((*proc_if)->ts.interface) |
5088 | *proc_if = (*proc_if)->ts.interface; | |
bb343a6c | 5089 | |
0e8d854e JW |
5090 | if ((*proc_if)->attr.flavor == FL_UNKNOWN |
5091 | && (*proc_if)->ts.type == BT_UNKNOWN | |
524af0d6 JB |
5092 | && !gfc_add_flavor (&(*proc_if)->attr, FL_PROCEDURE, |
5093 | (*proc_if)->name, NULL)) | |
0e8d854e | 5094 | return MATCH_ERROR; |
69773742 JW |
5095 | } |
5096 | ||
5097 | got_ts: | |
69773742 JW |
5098 | if (gfc_match (" )") != MATCH_YES) |
5099 | { | |
5100 | gfc_current_locus = entry_loc; | |
5101 | return MATCH_NO; | |
5102 | } | |
5103 | ||
713485cc JW |
5104 | return MATCH_YES; |
5105 | } | |
5106 | ||
5107 | ||
5108 | /* Match a PROCEDURE declaration (R1211). */ | |
5109 | ||
5110 | static match | |
5111 | match_procedure_decl (void) | |
5112 | { | |
5113 | match m; | |
5114 | gfc_symbol *sym, *proc_if = NULL; | |
5115 | int num; | |
5116 | gfc_expr *initializer = NULL; | |
5117 | ||
1cc0e193 | 5118 | /* Parse interface (with brackets). */ |
713485cc JW |
5119 | m = match_procedure_interface (&proc_if); |
5120 | if (m != MATCH_YES) | |
5121 | return m; | |
5122 | ||
5123 | /* Parse attributes (with colons). */ | |
69773742 JW |
5124 | m = match_attr_spec(); |
5125 | if (m == MATCH_ERROR) | |
5126 | return MATCH_ERROR; | |
5127 | ||
0859be17 TB |
5128 | if (proc_if && proc_if->attr.is_bind_c && !current_attr.is_bind_c) |
5129 | { | |
5130 | current_attr.is_bind_c = 1; | |
5131 | has_name_equals = 0; | |
5132 | curr_binding_label = NULL; | |
5133 | } | |
5134 | ||
69773742 JW |
5135 | /* Get procedure symbols. */ |
5136 | for(num=1;;num++) | |
5137 | { | |
69773742 JW |
5138 | m = gfc_match_symbol (&sym, 0); |
5139 | if (m == MATCH_NO) | |
5140 | goto syntax; | |
5141 | else if (m == MATCH_ERROR) | |
5142 | return m; | |
5143 | ||
5144 | /* Add current_attr to the symbol attributes. */ | |
524af0d6 | 5145 | if (!gfc_copy_attr (&sym->attr, ¤t_attr, NULL)) |
69773742 JW |
5146 | return MATCH_ERROR; |
5147 | ||
5148 | if (sym->attr.is_bind_c) | |
5149 | { | |
5150 | /* Check for C1218. */ | |
5151 | if (!proc_if || !proc_if->attr.is_bind_c) | |
5152 | { | |
5153 | gfc_error ("BIND(C) attribute at %C requires " | |
5154 | "an interface with BIND(C)"); | |
5155 | return MATCH_ERROR; | |
5156 | } | |
5157 | /* Check for C1217. */ | |
5158 | if (has_name_equals && sym->attr.pointer) | |
5159 | { | |
5160 | gfc_error ("BIND(C) procedure with NAME may not have " | |
5161 | "POINTER attribute at %C"); | |
5162 | return MATCH_ERROR; | |
5163 | } | |
5164 | if (has_name_equals && sym->attr.dummy) | |
5165 | { | |
5166 | gfc_error ("Dummy procedure at %C may not have " | |
5167 | "BIND(C) attribute with NAME"); | |
5168 | return MATCH_ERROR; | |
5169 | } | |
5170 | /* Set binding label for BIND(C). */ | |
524af0d6 | 5171 | if (!set_binding_label (&sym->binding_label, sym->name, num)) |
69773742 JW |
5172 | return MATCH_ERROR; |
5173 | } | |
5174 | ||
524af0d6 | 5175 | if (!gfc_add_external (&sym->attr, NULL)) |
69773742 | 5176 | return MATCH_ERROR; |
3070bab4 | 5177 | |
524af0d6 | 5178 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
5179 | sym = sym->result; |
5180 | ||
524af0d6 | 5181 | if (!gfc_add_proc (&sym->attr, sym->name, NULL)) |
69773742 JW |
5182 | return MATCH_ERROR; |
5183 | ||
5184 | /* Set interface. */ | |
5185 | if (proc_if != NULL) | |
6cc309c9 | 5186 | { |
1d146030 JW |
5187 | if (sym->ts.type != BT_UNKNOWN) |
5188 | { | |
c4100eae | 5189 | gfc_error ("Procedure %qs at %L already has basic type of %s", |
1d146030 JW |
5190 | sym->name, &gfc_current_locus, |
5191 | gfc_basic_typename (sym->ts.type)); | |
5192 | return MATCH_ERROR; | |
5193 | } | |
32d99e68 | 5194 | sym->ts.interface = proc_if; |
6cc309c9 | 5195 | sym->attr.untyped = 1; |
c73b6478 | 5196 | sym->attr.if_source = IFSRC_IFBODY; |
6cc309c9 | 5197 | } |
69773742 JW |
5198 | else if (current_ts.type != BT_UNKNOWN) |
5199 | { | |
524af0d6 | 5200 | if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
1d146030 | 5201 | return MATCH_ERROR; |
32d99e68 JW |
5202 | sym->ts.interface = gfc_new_symbol ("", gfc_current_ns); |
5203 | sym->ts.interface->ts = current_ts; | |
d91909c0 | 5204 | sym->ts.interface->attr.flavor = FL_PROCEDURE; |
32d99e68 | 5205 | sym->ts.interface->attr.function = 1; |
d91909c0 | 5206 | sym->attr.function = 1; |
c73b6478 | 5207 | sym->attr.if_source = IFSRC_UNKNOWN; |
69773742 JW |
5208 | } |
5209 | ||
8fb74da4 JW |
5210 | if (gfc_match (" =>") == MATCH_YES) |
5211 | { | |
5212 | if (!current_attr.pointer) | |
5213 | { | |
5214 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
5215 | m = MATCH_ERROR; | |
5216 | goto cleanup; | |
5217 | } | |
5218 | ||
80f95228 | 5219 | m = match_pointer_init (&initializer, 1); |
8fb74da4 JW |
5220 | if (m != MATCH_YES) |
5221 | goto cleanup; | |
5222 | ||
524af0d6 | 5223 | if (!add_init_expr_to_sym (sym->name, &initializer, &gfc_current_locus)) |
8fb74da4 JW |
5224 | goto cleanup; |
5225 | ||
5226 | } | |
5227 | ||
69773742 JW |
5228 | if (gfc_match_eos () == MATCH_YES) |
5229 | return MATCH_YES; | |
5230 | if (gfc_match_char (',') != MATCH_YES) | |
5231 | goto syntax; | |
5232 | } | |
5233 | ||
5234 | syntax: | |
5235 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
5236 | return MATCH_ERROR; | |
8fb74da4 JW |
5237 | |
5238 | cleanup: | |
5239 | /* Free stuff up and return. */ | |
5240 | gfc_free_expr (initializer); | |
5241 | return m; | |
69773742 JW |
5242 | } |
5243 | ||
5244 | ||
713485cc JW |
5245 | static match |
5246 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc); | |
5247 | ||
5248 | ||
5249 | /* Match a procedure pointer component declaration (R445). */ | |
5250 | ||
5251 | static match | |
5252 | match_ppc_decl (void) | |
5253 | { | |
5254 | match m; | |
5255 | gfc_symbol *proc_if = NULL; | |
5256 | gfc_typespec ts; | |
5257 | int num; | |
5258 | gfc_component *c; | |
5259 | gfc_expr *initializer = NULL; | |
5260 | gfc_typebound_proc* tb; | |
5261 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5262 | ||
5263 | /* Parse interface (with brackets). */ | |
5264 | m = match_procedure_interface (&proc_if); | |
5265 | if (m != MATCH_YES) | |
5266 | goto syntax; | |
5267 | ||
5268 | /* Parse attributes. */ | |
5269 | tb = XCNEW (gfc_typebound_proc); | |
5270 | tb->where = gfc_current_locus; | |
5271 | m = match_binding_attributes (tb, false, true); | |
5272 | if (m == MATCH_ERROR) | |
5273 | return m; | |
5274 | ||
713485cc JW |
5275 | gfc_clear_attr (¤t_attr); |
5276 | current_attr.procedure = 1; | |
5277 | current_attr.proc_pointer = 1; | |
5278 | current_attr.access = tb->access; | |
5279 | current_attr.flavor = FL_PROCEDURE; | |
5280 | ||
5281 | /* Match the colons (required). */ | |
5282 | if (gfc_match (" ::") != MATCH_YES) | |
5283 | { | |
a4d9b221 | 5284 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
713485cc JW |
5285 | return MATCH_ERROR; |
5286 | } | |
5287 | ||
5288 | /* Check for C450. */ | |
5289 | if (!tb->nopass && proc_if == NULL) | |
5290 | { | |
5291 | gfc_error("NOPASS or explicit interface required at %C"); | |
5292 | return MATCH_ERROR; | |
5293 | } | |
5294 | ||
524af0d6 | 5295 | if (!gfc_notify_std (GFC_STD_F2003, "Procedure pointer component at %C")) |
3212c187 SK |
5296 | return MATCH_ERROR; |
5297 | ||
713485cc JW |
5298 | /* Match PPC names. */ |
5299 | ts = current_ts; | |
5300 | for(num=1;;num++) | |
5301 | { | |
5302 | m = gfc_match_name (name); | |
5303 | if (m == MATCH_NO) | |
5304 | goto syntax; | |
5305 | else if (m == MATCH_ERROR) | |
5306 | return m; | |
5307 | ||
524af0d6 | 5308 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
713485cc JW |
5309 | return MATCH_ERROR; |
5310 | ||
5311 | /* Add current_attr to the symbol attributes. */ | |
524af0d6 | 5312 | if (!gfc_copy_attr (&c->attr, ¤t_attr, NULL)) |
713485cc JW |
5313 | return MATCH_ERROR; |
5314 | ||
524af0d6 | 5315 | if (!gfc_add_external (&c->attr, NULL)) |
713485cc JW |
5316 | return MATCH_ERROR; |
5317 | ||
524af0d6 | 5318 | if (!gfc_add_proc (&c->attr, name, NULL)) |
713485cc JW |
5319 | return MATCH_ERROR; |
5320 | ||
2be03814 TB |
5321 | if (num == 1) |
5322 | c->tb = tb; | |
5323 | else | |
5324 | { | |
5325 | c->tb = XCNEW (gfc_typebound_proc); | |
5326 | c->tb->where = gfc_current_locus; | |
5327 | *c->tb = *tb; | |
5328 | } | |
90661f26 | 5329 | |
713485cc JW |
5330 | /* Set interface. */ |
5331 | if (proc_if != NULL) | |
5332 | { | |
5333 | c->ts.interface = proc_if; | |
5334 | c->attr.untyped = 1; | |
5335 | c->attr.if_source = IFSRC_IFBODY; | |
5336 | } | |
5337 | else if (ts.type != BT_UNKNOWN) | |
5338 | { | |
5339 | c->ts = ts; | |
5340 | c->ts.interface = gfc_new_symbol ("", gfc_current_ns); | |
d7fee03d | 5341 | c->ts.interface->result = c->ts.interface; |
713485cc | 5342 | c->ts.interface->ts = ts; |
d91909c0 | 5343 | c->ts.interface->attr.flavor = FL_PROCEDURE; |
713485cc | 5344 | c->ts.interface->attr.function = 1; |
d91909c0 | 5345 | c->attr.function = 1; |
713485cc JW |
5346 | c->attr.if_source = IFSRC_UNKNOWN; |
5347 | } | |
5348 | ||
5349 | if (gfc_match (" =>") == MATCH_YES) | |
5350 | { | |
80f95228 | 5351 | m = match_pointer_init (&initializer, 1); |
713485cc JW |
5352 | if (m != MATCH_YES) |
5353 | { | |
5354 | gfc_free_expr (initializer); | |
5355 | return m; | |
5356 | } | |
5357 | c->initializer = initializer; | |
5358 | } | |
5359 | ||
5360 | if (gfc_match_eos () == MATCH_YES) | |
5361 | return MATCH_YES; | |
5362 | if (gfc_match_char (',') != MATCH_YES) | |
5363 | goto syntax; | |
5364 | } | |
5365 | ||
5366 | syntax: | |
5367 | gfc_error ("Syntax error in procedure pointer component at %C"); | |
5368 | return MATCH_ERROR; | |
5369 | } | |
5370 | ||
5371 | ||
69773742 JW |
5372 | /* Match a PROCEDURE declaration inside an interface (R1206). */ |
5373 | ||
5374 | static match | |
5375 | match_procedure_in_interface (void) | |
5376 | { | |
5377 | match m; | |
5378 | gfc_symbol *sym; | |
5379 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
a6fcd41a | 5380 | locus old_locus; |
69773742 JW |
5381 | |
5382 | if (current_interface.type == INTERFACE_NAMELESS | |
5383 | || current_interface.type == INTERFACE_ABSTRACT) | |
5384 | { | |
5385 | gfc_error ("PROCEDURE at %C must be in a generic interface"); | |
5386 | return MATCH_ERROR; | |
5387 | } | |
5388 | ||
a6fcd41a TB |
5389 | /* Check if the F2008 optional double colon appears. */ |
5390 | gfc_gobble_whitespace (); | |
5391 | old_locus = gfc_current_locus; | |
5392 | if (gfc_match ("::") == MATCH_YES) | |
5393 | { | |
524af0d6 JB |
5394 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
5395 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
a6fcd41a TB |
5396 | return MATCH_ERROR; |
5397 | } | |
5398 | else | |
5399 | gfc_current_locus = old_locus; | |
5400 | ||
69773742 JW |
5401 | for(;;) |
5402 | { | |
5403 | m = gfc_match_name (name); | |
5404 | if (m == MATCH_NO) | |
5405 | goto syntax; | |
5406 | else if (m == MATCH_ERROR) | |
5407 | return m; | |
5408 | if (gfc_get_symbol (name, gfc_current_ns->parent, &sym)) | |
5409 | return MATCH_ERROR; | |
5410 | ||
524af0d6 | 5411 | if (!gfc_add_interface (sym)) |
69773742 JW |
5412 | return MATCH_ERROR; |
5413 | ||
69773742 JW |
5414 | if (gfc_match_eos () == MATCH_YES) |
5415 | break; | |
5416 | if (gfc_match_char (',') != MATCH_YES) | |
5417 | goto syntax; | |
5418 | } | |
5419 | ||
5420 | return MATCH_YES; | |
5421 | ||
5422 | syntax: | |
5423 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
5424 | return MATCH_ERROR; | |
5425 | } | |
5426 | ||
5427 | ||
5428 | /* General matcher for PROCEDURE declarations. */ | |
5429 | ||
30b608eb DK |
5430 | static match match_procedure_in_type (void); |
5431 | ||
69773742 JW |
5432 | match |
5433 | gfc_match_procedure (void) | |
5434 | { | |
5435 | match m; | |
5436 | ||
5437 | switch (gfc_current_state ()) | |
5438 | { | |
5439 | case COMP_NONE: | |
5440 | case COMP_PROGRAM: | |
5441 | case COMP_MODULE: | |
4668d6f9 | 5442 | case COMP_SUBMODULE: |
69773742 JW |
5443 | case COMP_SUBROUTINE: |
5444 | case COMP_FUNCTION: | |
3547d57e | 5445 | case COMP_BLOCK: |
69773742 JW |
5446 | m = match_procedure_decl (); |
5447 | break; | |
5448 | case COMP_INTERFACE: | |
5449 | m = match_procedure_in_interface (); | |
5450 | break; | |
5451 | case COMP_DERIVED: | |
713485cc JW |
5452 | m = match_ppc_decl (); |
5453 | break; | |
30b608eb DK |
5454 | case COMP_DERIVED_CONTAINS: |
5455 | m = match_procedure_in_type (); | |
5456 | break; | |
69773742 JW |
5457 | default: |
5458 | return MATCH_NO; | |
5459 | } | |
5460 | ||
5461 | if (m != MATCH_YES) | |
5462 | return m; | |
5463 | ||
524af0d6 | 5464 | if (!gfc_notify_std (GFC_STD_F2003, "PROCEDURE statement at %C")) |
69773742 JW |
5465 | return MATCH_ERROR; |
5466 | ||
5467 | return m; | |
5468 | } | |
5469 | ||
5470 | ||
c3005b0f DK |
5471 | /* Warn if a matched procedure has the same name as an intrinsic; this is |
5472 | simply a wrapper around gfc_warn_intrinsic_shadow that interprets the current | |
5473 | parser-state-stack to find out whether we're in a module. */ | |
5474 | ||
5475 | static void | |
73e42eef | 5476 | do_warn_intrinsic_shadow (const gfc_symbol* sym, bool func) |
c3005b0f DK |
5477 | { |
5478 | bool in_module; | |
5479 | ||
5480 | in_module = (gfc_state_stack->previous | |
4668d6f9 PT |
5481 | && (gfc_state_stack->previous->state == COMP_MODULE |
5482 | || gfc_state_stack->previous->state == COMP_SUBMODULE)); | |
c3005b0f DK |
5483 | |
5484 | gfc_warn_intrinsic_shadow (sym, in_module, func); | |
5485 | } | |
5486 | ||
5487 | ||
6de9cd9a DN |
5488 | /* Match a function declaration. */ |
5489 | ||
5490 | match | |
5491 | gfc_match_function_decl (void) | |
5492 | { | |
5493 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5494 | gfc_symbol *sym, *result; | |
5495 | locus old_loc; | |
5496 | match m; | |
a8b3b0b6 | 5497 | match suffix_match; |
f5acf0f2 | 5498 | match found_match; /* Status returned by match func. */ |
6de9cd9a DN |
5499 | |
5500 | if (gfc_current_state () != COMP_NONE | |
5501 | && gfc_current_state () != COMP_INTERFACE | |
5502 | && gfc_current_state () != COMP_CONTAINS) | |
5503 | return MATCH_NO; | |
5504 | ||
5505 | gfc_clear_ts (¤t_ts); | |
5506 | ||
63645982 | 5507 | old_loc = gfc_current_locus; |
6de9cd9a | 5508 | |
1c8bcdf7 | 5509 | m = gfc_match_prefix (¤t_ts); |
6de9cd9a DN |
5510 | if (m != MATCH_YES) |
5511 | { | |
63645982 | 5512 | gfc_current_locus = old_loc; |
6de9cd9a DN |
5513 | return m; |
5514 | } | |
5515 | ||
5516 | if (gfc_match ("function% %n", name) != MATCH_YES) | |
5517 | { | |
63645982 | 5518 | gfc_current_locus = old_loc; |
6de9cd9a DN |
5519 | return MATCH_NO; |
5520 | } | |
4668d6f9 | 5521 | |
1a492601 | 5522 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 5523 | return MATCH_ERROR; |
3070bab4 | 5524 | |
524af0d6 | 5525 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
5526 | sym = sym->result; |
5527 | ||
4668d6f9 PT |
5528 | if (current_attr.module_procedure) |
5529 | sym->attr.module_procedure = 1; | |
5530 | ||
6de9cd9a DN |
5531 | gfc_new_block = sym; |
5532 | ||
5533 | m = gfc_match_formal_arglist (sym, 0, 0); | |
5534 | if (m == MATCH_NO) | |
2b9a33ae TS |
5535 | { |
5536 | gfc_error ("Expected formal argument list in function " | |
636dff67 | 5537 | "definition at %C"); |
2b9a33ae TS |
5538 | m = MATCH_ERROR; |
5539 | goto cleanup; | |
5540 | } | |
6de9cd9a DN |
5541 | else if (m == MATCH_ERROR) |
5542 | goto cleanup; | |
5543 | ||
5544 | result = NULL; | |
5545 | ||
a8b3b0b6 CR |
5546 | /* According to the draft, the bind(c) and result clause can |
5547 | come in either order after the formal_arg_list (i.e., either | |
5548 | can be first, both can exist together or by themselves or neither | |
5549 | one). Therefore, the match_result can't match the end of the | |
5550 | string, and check for the bind(c) or result clause in either order. */ | |
5551 | found_match = gfc_match_eos (); | |
5552 | ||
5553 | /* Make sure that it isn't already declared as BIND(C). If it is, it | |
5554 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5555 | not allowed for procedures. */ | |
5556 | if (sym->attr.is_bind_c == 1) | |
5557 | { | |
5558 | sym->attr.is_bind_c = 0; | |
5559 | if (sym->old_symbol != NULL) | |
5560 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5561 | "variables or common blocks", | |
5562 | &(sym->old_symbol->declared_at)); | |
5563 | else | |
5564 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5565 | "variables or common blocks", &gfc_current_locus); | |
6de9cd9a DN |
5566 | } |
5567 | ||
a8b3b0b6 | 5568 | if (found_match != MATCH_YES) |
6de9cd9a | 5569 | { |
a8b3b0b6 CR |
5570 | /* If we haven't found the end-of-statement, look for a suffix. */ |
5571 | suffix_match = gfc_match_suffix (sym, &result); | |
5572 | if (suffix_match == MATCH_YES) | |
5573 | /* Need to get the eos now. */ | |
5574 | found_match = gfc_match_eos (); | |
5575 | else | |
5576 | found_match = suffix_match; | |
6de9cd9a DN |
5577 | } |
5578 | ||
a8b3b0b6 CR |
5579 | if(found_match != MATCH_YES) |
5580 | m = MATCH_ERROR; | |
6de9cd9a DN |
5581 | else |
5582 | { | |
a8b3b0b6 CR |
5583 | /* Make changes to the symbol. */ |
5584 | m = MATCH_ERROR; | |
f5acf0f2 | 5585 | |
524af0d6 | 5586 | if (!gfc_add_function (&sym->attr, sym->name, NULL)) |
a8b3b0b6 | 5587 | goto cleanup; |
f5acf0f2 | 5588 | |
524af0d6 JB |
5589 | if (!gfc_missing_attr (&sym->attr, NULL) |
5590 | || !copy_prefix (&sym->attr, &sym->declared_at)) | |
a8b3b0b6 | 5591 | goto cleanup; |
6de9cd9a | 5592 | |
a99d95a2 | 5593 | /* Delay matching the function characteristics until after the |
1c8bcdf7 | 5594 | specification block by signalling kind=-1. */ |
a99d95a2 PT |
5595 | sym->declared_at = old_loc; |
5596 | if (current_ts.type != BT_UNKNOWN) | |
5597 | current_ts.kind = -1; | |
5598 | else | |
5599 | current_ts.kind = 0; | |
1c8bcdf7 | 5600 | |
a8b3b0b6 CR |
5601 | if (result == NULL) |
5602 | { | |
6de7294f | 5603 | if (current_ts.type != BT_UNKNOWN |
524af0d6 | 5604 | && !gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
6de7294f | 5605 | goto cleanup; |
a8b3b0b6 CR |
5606 | sym->result = sym; |
5607 | } | |
5608 | else | |
5609 | { | |
6de7294f | 5610 | if (current_ts.type != BT_UNKNOWN |
524af0d6 | 5611 | && !gfc_add_type (result, ¤t_ts, &gfc_current_locus)) |
6de7294f | 5612 | goto cleanup; |
a8b3b0b6 CR |
5613 | sym->result = result; |
5614 | } | |
5615 | ||
c3005b0f | 5616 | /* Warn if this procedure has the same name as an intrinsic. */ |
73e42eef | 5617 | do_warn_intrinsic_shadow (sym, true); |
c3005b0f | 5618 | |
a8b3b0b6 CR |
5619 | return MATCH_YES; |
5620 | } | |
6de9cd9a DN |
5621 | |
5622 | cleanup: | |
63645982 | 5623 | gfc_current_locus = old_loc; |
6de9cd9a DN |
5624 | return m; |
5625 | } | |
5626 | ||
636dff67 SK |
5627 | |
5628 | /* This is mostly a copy of parse.c(add_global_procedure) but modified to | |
5629 | pass the name of the entry, rather than the gfc_current_block name, and | |
5630 | to return false upon finding an existing global entry. */ | |
68ea355b PT |
5631 | |
5632 | static bool | |
3a43b5b3 TB |
5633 | add_global_entry (const char *name, const char *binding_label, bool sub, |
5634 | locus *where) | |
68ea355b PT |
5635 | { |
5636 | gfc_gsymbol *s; | |
32e8bb8e | 5637 | enum gfc_symbol_type type; |
68ea355b | 5638 | |
7389bce6 | 5639 | type = sub ? GSYM_SUBROUTINE : GSYM_FUNCTION; |
68ea355b | 5640 | |
f11de7c5 TB |
5641 | /* Only in Fortran 2003: For procedures with a binding label also the Fortran |
5642 | name is a global identifier. */ | |
5643 | if (!binding_label || gfc_notification_std (GFC_STD_F2008)) | |
68ea355b | 5644 | { |
f11de7c5 TB |
5645 | s = gfc_get_gsymbol (name); |
5646 | ||
5647 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
5648 | { | |
3a43b5b3 | 5649 | gfc_global_used (s, where); |
f11de7c5 TB |
5650 | return false; |
5651 | } | |
5652 | else | |
5653 | { | |
5654 | s->type = type; | |
77f8682b | 5655 | s->sym_name = name; |
3a43b5b3 | 5656 | s->where = *where; |
f11de7c5 TB |
5657 | s->defined = 1; |
5658 | s->ns = gfc_current_ns; | |
5659 | } | |
68ea355b | 5660 | } |
f11de7c5 TB |
5661 | |
5662 | /* Don't add the symbol multiple times. */ | |
5663 | if (binding_label | |
5664 | && (!gfc_notification_std (GFC_STD_F2008) | |
5665 | || strcmp (name, binding_label) != 0)) | |
5666 | { | |
5667 | s = gfc_get_gsymbol (binding_label); | |
5668 | ||
5669 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
5670 | { | |
3a43b5b3 | 5671 | gfc_global_used (s, where); |
f11de7c5 TB |
5672 | return false; |
5673 | } | |
5674 | else | |
5675 | { | |
5676 | s->type = type; | |
77f8682b | 5677 | s->sym_name = name; |
f11de7c5 | 5678 | s->binding_label = binding_label; |
3a43b5b3 | 5679 | s->where = *where; |
f11de7c5 TB |
5680 | s->defined = 1; |
5681 | s->ns = gfc_current_ns; | |
5682 | } | |
5683 | } | |
5684 | ||
5685 | return true; | |
68ea355b | 5686 | } |
6de9cd9a | 5687 | |
636dff67 | 5688 | |
6de9cd9a DN |
5689 | /* Match an ENTRY statement. */ |
5690 | ||
5691 | match | |
5692 | gfc_match_entry (void) | |
5693 | { | |
3d79abbd PB |
5694 | gfc_symbol *proc; |
5695 | gfc_symbol *result; | |
5696 | gfc_symbol *entry; | |
6de9cd9a DN |
5697 | char name[GFC_MAX_SYMBOL_LEN + 1]; |
5698 | gfc_compile_state state; | |
5699 | match m; | |
3d79abbd | 5700 | gfc_entry_list *el; |
c96cfa49 | 5701 | locus old_loc; |
1a492601 | 5702 | bool module_procedure; |
bc3e7a8c TB |
5703 | char peek_char; |
5704 | match is_bind_c; | |
6de9cd9a DN |
5705 | |
5706 | m = gfc_match_name (name); | |
5707 | if (m != MATCH_YES) | |
5708 | return m; | |
5709 | ||
524af0d6 | 5710 | if (!gfc_notify_std (GFC_STD_F2008_OBS, "ENTRY statement at %C")) |
58fc89f6 TB |
5711 | return MATCH_ERROR; |
5712 | ||
3d79abbd | 5713 | state = gfc_current_state (); |
4c93c95a | 5714 | if (state != COMP_SUBROUTINE && state != COMP_FUNCTION) |
3d79abbd | 5715 | { |
4c93c95a FXC |
5716 | switch (state) |
5717 | { | |
5718 | case COMP_PROGRAM: | |
5719 | gfc_error ("ENTRY statement at %C cannot appear within a PROGRAM"); | |
5720 | break; | |
5721 | case COMP_MODULE: | |
5722 | gfc_error ("ENTRY statement at %C cannot appear within a MODULE"); | |
5723 | break; | |
4668d6f9 PT |
5724 | case COMP_SUBMODULE: |
5725 | gfc_error ("ENTRY statement at %C cannot appear within a SUBMODULE"); | |
5726 | break; | |
4c93c95a | 5727 | case COMP_BLOCK_DATA: |
636dff67 SK |
5728 | gfc_error ("ENTRY statement at %C cannot appear within " |
5729 | "a BLOCK DATA"); | |
4c93c95a FXC |
5730 | break; |
5731 | case COMP_INTERFACE: | |
636dff67 SK |
5732 | gfc_error ("ENTRY statement at %C cannot appear within " |
5733 | "an INTERFACE"); | |
4c93c95a FXC |
5734 | break; |
5735 | case COMP_DERIVED: | |
636dff67 SK |
5736 | gfc_error ("ENTRY statement at %C cannot appear within " |
5737 | "a DERIVED TYPE block"); | |
4c93c95a FXC |
5738 | break; |
5739 | case COMP_IF: | |
636dff67 SK |
5740 | gfc_error ("ENTRY statement at %C cannot appear within " |
5741 | "an IF-THEN block"); | |
4c93c95a FXC |
5742 | break; |
5743 | case COMP_DO: | |
8c6a85e3 | 5744 | case COMP_DO_CONCURRENT: |
636dff67 SK |
5745 | gfc_error ("ENTRY statement at %C cannot appear within " |
5746 | "a DO block"); | |
4c93c95a FXC |
5747 | break; |
5748 | case COMP_SELECT: | |
636dff67 SK |
5749 | gfc_error ("ENTRY statement at %C cannot appear within " |
5750 | "a SELECT block"); | |
4c93c95a FXC |
5751 | break; |
5752 | case COMP_FORALL: | |
636dff67 SK |
5753 | gfc_error ("ENTRY statement at %C cannot appear within " |
5754 | "a FORALL block"); | |
4c93c95a FXC |
5755 | break; |
5756 | case COMP_WHERE: | |
636dff67 SK |
5757 | gfc_error ("ENTRY statement at %C cannot appear within " |
5758 | "a WHERE block"); | |
4c93c95a FXC |
5759 | break; |
5760 | case COMP_CONTAINS: | |
636dff67 SK |
5761 | gfc_error ("ENTRY statement at %C cannot appear within " |
5762 | "a contained subprogram"); | |
4c93c95a FXC |
5763 | break; |
5764 | default: | |
fce523bf | 5765 | gfc_error ("Unexpected ENTRY statement at %C"); |
4c93c95a | 5766 | } |
3d79abbd PB |
5767 | return MATCH_ERROR; |
5768 | } | |
5769 | ||
1a492601 | 5770 | module_procedure = gfc_current_ns->parent != NULL |
636dff67 SK |
5771 | && gfc_current_ns->parent->proc_name |
5772 | && gfc_current_ns->parent->proc_name->attr.flavor | |
5773 | == FL_MODULE; | |
1a492601 | 5774 | |
3d79abbd PB |
5775 | if (gfc_current_ns->parent != NULL |
5776 | && gfc_current_ns->parent->proc_name | |
1a492601 | 5777 | && !module_procedure) |
3d79abbd PB |
5778 | { |
5779 | gfc_error("ENTRY statement at %C cannot appear in a " | |
5780 | "contained procedure"); | |
5781 | return MATCH_ERROR; | |
5782 | } | |
5783 | ||
1a492601 PT |
5784 | /* Module function entries need special care in get_proc_name |
5785 | because previous references within the function will have | |
5786 | created symbols attached to the current namespace. */ | |
5787 | if (get_proc_name (name, &entry, | |
5788 | gfc_current_ns->parent != NULL | |
ecd3b73c | 5789 | && module_procedure)) |
6de9cd9a DN |
5790 | return MATCH_ERROR; |
5791 | ||
3d79abbd PB |
5792 | proc = gfc_current_block (); |
5793 | ||
bc3e7a8c TB |
5794 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
5795 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5796 | not allowed for procedures. */ | |
5797 | if (entry->attr.is_bind_c == 1) | |
5798 | { | |
5799 | entry->attr.is_bind_c = 0; | |
5800 | if (entry->old_symbol != NULL) | |
5801 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5802 | "variables or common blocks", | |
5803 | &(entry->old_symbol->declared_at)); | |
5804 | else | |
5805 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5806 | "variables or common blocks", &gfc_current_locus); | |
5807 | } | |
f5acf0f2 | 5808 | |
bc3e7a8c TB |
5809 | /* Check what next non-whitespace character is so we can tell if there |
5810 | is the required parens if we have a BIND(C). */ | |
3a43b5b3 | 5811 | old_loc = gfc_current_locus; |
bc3e7a8c | 5812 | gfc_gobble_whitespace (); |
8fc541d3 | 5813 | peek_char = gfc_peek_ascii_char (); |
bc3e7a8c | 5814 | |
3d79abbd | 5815 | if (state == COMP_SUBROUTINE) |
6de9cd9a | 5816 | { |
6de9cd9a DN |
5817 | m = gfc_match_formal_arglist (entry, 0, 1); |
5818 | if (m != MATCH_YES) | |
5819 | return MATCH_ERROR; | |
5820 | ||
1eabf70a TB |
5821 | /* Call gfc_match_bind_c with allow_binding_name = true as ENTRY can |
5822 | never be an internal procedure. */ | |
5823 | is_bind_c = gfc_match_bind_c (entry, true); | |
bc3e7a8c TB |
5824 | if (is_bind_c == MATCH_ERROR) |
5825 | return MATCH_ERROR; | |
5826 | if (is_bind_c == MATCH_YES) | |
5827 | { | |
5828 | if (peek_char != '(') | |
5829 | { | |
5830 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
5831 | return MATCH_ERROR; | |
5832 | } | |
524af0d6 JB |
5833 | if (!gfc_add_is_bind_c (&(entry->attr), entry->name, |
5834 | &(entry->declared_at), 1)) | |
bc3e7a8c TB |
5835 | return MATCH_ERROR; |
5836 | } | |
5837 | ||
f11de7c5 | 5838 | if (!gfc_current_ns->parent |
3a43b5b3 TB |
5839 | && !add_global_entry (name, entry->binding_label, true, |
5840 | &old_loc)) | |
f11de7c5 TB |
5841 | return MATCH_ERROR; |
5842 | ||
5843 | /* An entry in a subroutine. */ | |
524af0d6 JB |
5844 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
5845 | || !gfc_add_subroutine (&entry->attr, entry->name, NULL)) | |
6de9cd9a | 5846 | return MATCH_ERROR; |
3d79abbd PB |
5847 | } |
5848 | else | |
5849 | { | |
c96cfa49 | 5850 | /* An entry in a function. |
636dff67 SK |
5851 | We need to take special care because writing |
5852 | ENTRY f() | |
5853 | as | |
5854 | ENTRY f | |
5855 | is allowed, whereas | |
5856 | ENTRY f() RESULT (r) | |
5857 | can't be written as | |
5858 | ENTRY f RESULT (r). */ | |
c96cfa49 TS |
5859 | if (gfc_match_eos () == MATCH_YES) |
5860 | { | |
5861 | gfc_current_locus = old_loc; | |
5862 | /* Match the empty argument list, and add the interface to | |
5863 | the symbol. */ | |
5864 | m = gfc_match_formal_arglist (entry, 0, 1); | |
5865 | } | |
5866 | else | |
5867 | m = gfc_match_formal_arglist (entry, 0, 0); | |
5868 | ||
6de9cd9a DN |
5869 | if (m != MATCH_YES) |
5870 | return MATCH_ERROR; | |
5871 | ||
6de9cd9a DN |
5872 | result = NULL; |
5873 | ||
5874 | if (gfc_match_eos () == MATCH_YES) | |
5875 | { | |
524af0d6 JB |
5876 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
5877 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
6de9cd9a DN |
5878 | return MATCH_ERROR; |
5879 | ||
d198b59a | 5880 | entry->result = entry; |
6de9cd9a DN |
5881 | } |
5882 | else | |
5883 | { | |
bc3e7a8c | 5884 | m = gfc_match_suffix (entry, &result); |
6de9cd9a DN |
5885 | if (m == MATCH_NO) |
5886 | gfc_syntax_error (ST_ENTRY); | |
5887 | if (m != MATCH_YES) | |
5888 | return MATCH_ERROR; | |
5889 | ||
bc3e7a8c TB |
5890 | if (result) |
5891 | { | |
524af0d6 JB |
5892 | if (!gfc_add_result (&result->attr, result->name, NULL) |
5893 | || !gfc_add_entry (&entry->attr, result->name, NULL) | |
5894 | || !gfc_add_function (&entry->attr, result->name, NULL)) | |
bc3e7a8c TB |
5895 | return MATCH_ERROR; |
5896 | entry->result = result; | |
5897 | } | |
5898 | else | |
5899 | { | |
524af0d6 JB |
5900 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
5901 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
bc3e7a8c TB |
5902 | return MATCH_ERROR; |
5903 | entry->result = entry; | |
5904 | } | |
6de9cd9a | 5905 | } |
f11de7c5 TB |
5906 | |
5907 | if (!gfc_current_ns->parent | |
3a43b5b3 TB |
5908 | && !add_global_entry (name, entry->binding_label, false, |
5909 | &old_loc)) | |
f11de7c5 | 5910 | return MATCH_ERROR; |
6de9cd9a DN |
5911 | } |
5912 | ||
5913 | if (gfc_match_eos () != MATCH_YES) | |
5914 | { | |
5915 | gfc_syntax_error (ST_ENTRY); | |
5916 | return MATCH_ERROR; | |
5917 | } | |
5918 | ||
3d79abbd PB |
5919 | entry->attr.recursive = proc->attr.recursive; |
5920 | entry->attr.elemental = proc->attr.elemental; | |
5921 | entry->attr.pure = proc->attr.pure; | |
6de9cd9a | 5922 | |
3d79abbd PB |
5923 | el = gfc_get_entry_list (); |
5924 | el->sym = entry; | |
5925 | el->next = gfc_current_ns->entries; | |
5926 | gfc_current_ns->entries = el; | |
5927 | if (el->next) | |
5928 | el->id = el->next->id + 1; | |
5929 | else | |
5930 | el->id = 1; | |
6de9cd9a | 5931 | |
3d79abbd PB |
5932 | new_st.op = EXEC_ENTRY; |
5933 | new_st.ext.entry = el; | |
5934 | ||
5935 | return MATCH_YES; | |
6de9cd9a DN |
5936 | } |
5937 | ||
5938 | ||
5939 | /* Match a subroutine statement, including optional prefixes. */ | |
5940 | ||
5941 | match | |
5942 | gfc_match_subroutine (void) | |
5943 | { | |
5944 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5945 | gfc_symbol *sym; | |
5946 | match m; | |
a8b3b0b6 CR |
5947 | match is_bind_c; |
5948 | char peek_char; | |
1eabf70a | 5949 | bool allow_binding_name; |
6de9cd9a DN |
5950 | |
5951 | if (gfc_current_state () != COMP_NONE | |
5952 | && gfc_current_state () != COMP_INTERFACE | |
5953 | && gfc_current_state () != COMP_CONTAINS) | |
5954 | return MATCH_NO; | |
5955 | ||
1c8bcdf7 | 5956 | m = gfc_match_prefix (NULL); |
6de9cd9a DN |
5957 | if (m != MATCH_YES) |
5958 | return m; | |
5959 | ||
5960 | m = gfc_match ("subroutine% %n", name); | |
5961 | if (m != MATCH_YES) | |
5962 | return m; | |
5963 | ||
1a492601 | 5964 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 5965 | return MATCH_ERROR; |
3070bab4 | 5966 | |
7fcd5ad5 | 5967 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if |
1cc0e193 | 5968 | the symbol existed before. */ |
7fcd5ad5 TB |
5969 | sym->declared_at = gfc_current_locus; |
5970 | ||
4668d6f9 PT |
5971 | if (current_attr.module_procedure) |
5972 | sym->attr.module_procedure = 1; | |
5973 | ||
524af0d6 | 5974 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
5975 | sym = sym->result; |
5976 | ||
6de9cd9a DN |
5977 | gfc_new_block = sym; |
5978 | ||
a8b3b0b6 | 5979 | /* Check what next non-whitespace character is so we can tell if there |
bc3e7a8c | 5980 | is the required parens if we have a BIND(C). */ |
a8b3b0b6 | 5981 | gfc_gobble_whitespace (); |
8fc541d3 | 5982 | peek_char = gfc_peek_ascii_char (); |
f5acf0f2 | 5983 | |
524af0d6 | 5984 | if (!gfc_add_subroutine (&sym->attr, sym->name, NULL)) |
6de9cd9a DN |
5985 | return MATCH_ERROR; |
5986 | ||
5987 | if (gfc_match_formal_arglist (sym, 0, 1) != MATCH_YES) | |
5988 | return MATCH_ERROR; | |
5989 | ||
a8b3b0b6 CR |
5990 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
5991 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5992 | not allowed for procedures. */ | |
5993 | if (sym->attr.is_bind_c == 1) | |
5994 | { | |
5995 | sym->attr.is_bind_c = 0; | |
5996 | if (sym->old_symbol != NULL) | |
5997 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5998 | "variables or common blocks", | |
5999 | &(sym->old_symbol->declared_at)); | |
6000 | else | |
6001 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
6002 | "variables or common blocks", &gfc_current_locus); | |
6003 | } | |
1eabf70a TB |
6004 | |
6005 | /* C binding names are not allowed for internal procedures. */ | |
6006 | if (gfc_current_state () == COMP_CONTAINS | |
6007 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
6008 | allow_binding_name = false; | |
6009 | else | |
6010 | allow_binding_name = true; | |
6011 | ||
a8b3b0b6 CR |
6012 | /* Here, we are just checking if it has the bind(c) attribute, and if |
6013 | so, then we need to make sure it's all correct. If it doesn't, | |
6014 | we still need to continue matching the rest of the subroutine line. */ | |
1eabf70a | 6015 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
6016 | if (is_bind_c == MATCH_ERROR) |
6017 | { | |
6018 | /* There was an attempt at the bind(c), but it was wrong. An | |
6019 | error message should have been printed w/in the gfc_match_bind_c | |
6020 | so here we'll just return the MATCH_ERROR. */ | |
6021 | return MATCH_ERROR; | |
6022 | } | |
6023 | ||
6024 | if (is_bind_c == MATCH_YES) | |
6025 | { | |
1eabf70a | 6026 | /* The following is allowed in the Fortran 2008 draft. */ |
01f4fff1 | 6027 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 6028 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
524af0d6 JB |
6029 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
6030 | "at %L may not be specified for an internal " | |
6031 | "procedure", &gfc_current_locus)) | |
1eabf70a TB |
6032 | return MATCH_ERROR; |
6033 | ||
a8b3b0b6 CR |
6034 | if (peek_char != '(') |
6035 | { | |
6036 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
6037 | return MATCH_ERROR; | |
6038 | } | |
524af0d6 JB |
6039 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, |
6040 | &(sym->declared_at), 1)) | |
a8b3b0b6 CR |
6041 | return MATCH_ERROR; |
6042 | } | |
f5acf0f2 | 6043 | |
6de9cd9a DN |
6044 | if (gfc_match_eos () != MATCH_YES) |
6045 | { | |
6046 | gfc_syntax_error (ST_SUBROUTINE); | |
6047 | return MATCH_ERROR; | |
6048 | } | |
6049 | ||
524af0d6 | 6050 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
6de9cd9a DN |
6051 | return MATCH_ERROR; |
6052 | ||
c3005b0f | 6053 | /* Warn if it has the same name as an intrinsic. */ |
73e42eef | 6054 | do_warn_intrinsic_shadow (sym, false); |
c3005b0f | 6055 | |
6de9cd9a DN |
6056 | return MATCH_YES; |
6057 | } | |
6058 | ||
6059 | ||
3b37ccd4 FXC |
6060 | /* Check that the NAME identifier in a BIND attribute or statement |
6061 | is conform to C identifier rules. */ | |
6062 | ||
6063 | match | |
6064 | check_bind_name_identifier (char **name) | |
6065 | { | |
6066 | char *n = *name, *p; | |
6067 | ||
6068 | /* Remove leading spaces. */ | |
6069 | while (*n == ' ') | |
6070 | n++; | |
6071 | ||
6072 | /* On an empty string, free memory and set name to NULL. */ | |
6073 | if (*n == '\0') | |
6074 | { | |
6075 | free (*name); | |
6076 | *name = NULL; | |
6077 | return MATCH_YES; | |
6078 | } | |
6079 | ||
6080 | /* Remove trailing spaces. */ | |
6081 | p = n + strlen(n) - 1; | |
6082 | while (*p == ' ') | |
6083 | *(p--) = '\0'; | |
6084 | ||
6085 | /* Insert the identifier into the symbol table. */ | |
6086 | p = xstrdup (n); | |
6087 | free (*name); | |
6088 | *name = p; | |
6089 | ||
6090 | /* Now check that identifier is valid under C rules. */ | |
6091 | if (ISDIGIT (*p)) | |
6092 | { | |
6093 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
6094 | return MATCH_ERROR; | |
6095 | } | |
6096 | ||
6097 | for (; *p; p++) | |
6098 | if (!(ISALNUM (*p) || *p == '_' || *p == '$')) | |
6099 | { | |
6100 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
6101 | return MATCH_ERROR; | |
6102 | } | |
6103 | ||
6104 | return MATCH_YES; | |
6105 | } | |
6106 | ||
6107 | ||
a8b3b0b6 CR |
6108 | /* Match a BIND(C) specifier, with the optional 'name=' specifier if |
6109 | given, and set the binding label in either the given symbol (if not | |
86bf520d | 6110 | NULL), or in the current_ts. The symbol may be NULL because we may |
a8b3b0b6 CR |
6111 | encounter the BIND(C) before the declaration itself. Return |
6112 | MATCH_NO if what we're looking at isn't a BIND(C) specifier, | |
6113 | MATCH_ERROR if it is a BIND(C) clause but an error was encountered, | |
6114 | or MATCH_YES if the specifier was correct and the binding label and | |
6115 | bind(c) fields were set correctly for the given symbol or the | |
1eabf70a TB |
6116 | current_ts. If allow_binding_name is false, no binding name may be |
6117 | given. */ | |
a8b3b0b6 CR |
6118 | |
6119 | match | |
1eabf70a | 6120 | gfc_match_bind_c (gfc_symbol *sym, bool allow_binding_name) |
a8b3b0b6 | 6121 | { |
3b37ccd4 FXC |
6122 | char *binding_label = NULL; |
6123 | gfc_expr *e = NULL; | |
a8b3b0b6 | 6124 | |
f5acf0f2 | 6125 | /* Initialize the flag that specifies whether we encountered a NAME= |
a8b3b0b6 CR |
6126 | specifier or not. */ |
6127 | has_name_equals = 0; | |
6128 | ||
a8b3b0b6 CR |
6129 | /* This much we have to be able to match, in this order, if |
6130 | there is a bind(c) label. */ | |
6131 | if (gfc_match (" bind ( c ") != MATCH_YES) | |
6132 | return MATCH_NO; | |
6133 | ||
6134 | /* Now see if there is a binding label, or if we've reached the | |
6135 | end of the bind(c) attribute without one. */ | |
6136 | if (gfc_match_char (',') == MATCH_YES) | |
6137 | { | |
6138 | if (gfc_match (" name = ") != MATCH_YES) | |
6139 | { | |
6140 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
6141 | "at %C"); | |
6142 | /* should give an error message here */ | |
6143 | return MATCH_ERROR; | |
6144 | } | |
6145 | ||
6146 | has_name_equals = 1; | |
6147 | ||
3b37ccd4 FXC |
6148 | if (gfc_match_init_expr (&e) != MATCH_YES) |
6149 | { | |
6150 | gfc_free_expr (e); | |
6151 | return MATCH_ERROR; | |
6152 | } | |
f5acf0f2 | 6153 | |
3b37ccd4 | 6154 | if (!gfc_simplify_expr(e, 0)) |
a8b3b0b6 | 6155 | { |
3b37ccd4 FXC |
6156 | gfc_error ("NAME= specifier at %C should be a constant expression"); |
6157 | gfc_free_expr (e); | |
6158 | return MATCH_ERROR; | |
a8b3b0b6 | 6159 | } |
3b37ccd4 FXC |
6160 | |
6161 | if (e->expr_type != EXPR_CONSTANT || e->ts.type != BT_CHARACTER | |
6162 | || e->ts.kind != gfc_default_character_kind || e->rank != 0) | |
a8b3b0b6 | 6163 | { |
3b37ccd4 FXC |
6164 | gfc_error ("NAME= specifier at %C should be a scalar of " |
6165 | "default character kind"); | |
6166 | gfc_free_expr(e); | |
6167 | return MATCH_ERROR; | |
a8b3b0b6 | 6168 | } |
3b37ccd4 FXC |
6169 | |
6170 | // Get a C string from the Fortran string constant | |
6171 | binding_label = gfc_widechar_to_char (e->value.character.string, | |
6172 | e->value.character.length); | |
6173 | gfc_free_expr(e); | |
6174 | ||
6175 | // Check that it is valid (old gfc_match_name_C) | |
6176 | if (check_bind_name_identifier (&binding_label) != MATCH_YES) | |
6177 | return MATCH_ERROR; | |
6178 | } | |
a8b3b0b6 CR |
6179 | |
6180 | /* Get the required right paren. */ | |
6181 | if (gfc_match_char (')') != MATCH_YES) | |
6182 | { | |
6183 | gfc_error ("Missing closing paren for binding label at %C"); | |
6184 | return MATCH_ERROR; | |
6185 | } | |
6186 | ||
1eabf70a TB |
6187 | if (has_name_equals && !allow_binding_name) |
6188 | { | |
6189 | gfc_error ("No binding name is allowed in BIND(C) at %C"); | |
6190 | return MATCH_ERROR; | |
6191 | } | |
6192 | ||
6193 | if (has_name_equals && sym != NULL && sym->attr.dummy) | |
6194 | { | |
6195 | gfc_error ("For dummy procedure %s, no binding name is " | |
6196 | "allowed in BIND(C) at %C", sym->name); | |
6197 | return MATCH_ERROR; | |
6198 | } | |
6199 | ||
6200 | ||
a8b3b0b6 CR |
6201 | /* Save the binding label to the symbol. If sym is null, we're |
6202 | probably matching the typespec attributes of a declaration and | |
6203 | haven't gotten the name yet, and therefore, no symbol yet. */ | |
62603fae | 6204 | if (binding_label) |
a8b3b0b6 CR |
6205 | { |
6206 | if (sym != NULL) | |
62603fae | 6207 | sym->binding_label = binding_label; |
a8b3b0b6 | 6208 | else |
62603fae | 6209 | curr_binding_label = binding_label; |
a8b3b0b6 | 6210 | } |
1eabf70a | 6211 | else if (allow_binding_name) |
a8b3b0b6 CR |
6212 | { |
6213 | /* No binding label, but if symbol isn't null, we | |
1eabf70a TB |
6214 | can set the label for it here. |
6215 | If name="" or allow_binding_name is false, no C binding name is | |
1cc0e193 | 6216 | created. */ |
a8b3b0b6 | 6217 | if (sym != NULL && sym->name != NULL && has_name_equals == 0) |
62603fae | 6218 | sym->binding_label = IDENTIFIER_POINTER (get_identifier (sym->name)); |
a8b3b0b6 | 6219 | } |
9e1d712c | 6220 | |
129d15a3 JW |
6221 | if (has_name_equals && gfc_current_state () == COMP_INTERFACE |
6222 | && current_interface.type == INTERFACE_ABSTRACT) | |
9e1d712c TB |
6223 | { |
6224 | gfc_error ("NAME not allowed on BIND(C) for ABSTRACT INTERFACE at %C"); | |
6225 | return MATCH_ERROR; | |
6226 | } | |
6227 | ||
a8b3b0b6 CR |
6228 | return MATCH_YES; |
6229 | } | |
6230 | ||
6231 | ||
1f2959f0 | 6232 | /* Return nonzero if we're currently compiling a contained procedure. */ |
ddc9ce91 TS |
6233 | |
6234 | static int | |
6235 | contained_procedure (void) | |
6236 | { | |
083de129 | 6237 | gfc_state_data *s = gfc_state_stack; |
ddc9ce91 | 6238 | |
083de129 TB |
6239 | if ((s->state == COMP_SUBROUTINE || s->state == COMP_FUNCTION) |
6240 | && s->previous != NULL && s->previous->state == COMP_CONTAINS) | |
6241 | return 1; | |
ddc9ce91 TS |
6242 | |
6243 | return 0; | |
6244 | } | |
6245 | ||
d51347f9 | 6246 | /* Set the kind of each enumerator. The kind is selected such that it is |
25d8f0a2 TS |
6247 | interoperable with the corresponding C enumeration type, making |
6248 | sure that -fshort-enums is honored. */ | |
6249 | ||
6250 | static void | |
6251 | set_enum_kind(void) | |
6252 | { | |
6253 | enumerator_history *current_history = NULL; | |
6254 | int kind; | |
6255 | int i; | |
6256 | ||
6257 | if (max_enum == NULL || enum_history == NULL) | |
6258 | return; | |
6259 | ||
cab129d1 | 6260 | if (!flag_short_enums) |
d51347f9 TB |
6261 | return; |
6262 | ||
25d8f0a2 TS |
6263 | i = 0; |
6264 | do | |
6265 | { | |
6266 | kind = gfc_integer_kinds[i++].kind; | |
6267 | } | |
d51347f9 | 6268 | while (kind < gfc_c_int_kind |
25d8f0a2 TS |
6269 | && gfc_check_integer_range (max_enum->initializer->value.integer, |
6270 | kind) != ARITH_OK); | |
6271 | ||
6272 | current_history = enum_history; | |
6273 | while (current_history != NULL) | |
6274 | { | |
6275 | current_history->sym->ts.kind = kind; | |
6276 | current_history = current_history->next; | |
6277 | } | |
6278 | } | |
6279 | ||
636dff67 | 6280 | |
6de9cd9a | 6281 | /* Match any of the various end-block statements. Returns the type of |
9abe5e56 DK |
6282 | END to the caller. The END INTERFACE, END IF, END DO, END SELECT |
6283 | and END BLOCK statements cannot be replaced by a single END statement. */ | |
6de9cd9a DN |
6284 | |
6285 | match | |
636dff67 | 6286 | gfc_match_end (gfc_statement *st) |
6de9cd9a DN |
6287 | { |
6288 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6289 | gfc_compile_state state; | |
6290 | locus old_loc; | |
6291 | const char *block_name; | |
6292 | const char *target; | |
ddc9ce91 | 6293 | int eos_ok; |
6de9cd9a | 6294 | match m; |
0cab6b73 TK |
6295 | gfc_namespace *parent_ns, *ns, *prev_ns; |
6296 | gfc_namespace **nsp; | |
4668d6f9 | 6297 | bool abreviated_modproc_decl; |
6de9cd9a | 6298 | |
63645982 | 6299 | old_loc = gfc_current_locus; |
6de9cd9a DN |
6300 | if (gfc_match ("end") != MATCH_YES) |
6301 | return MATCH_NO; | |
6302 | ||
6303 | state = gfc_current_state (); | |
636dff67 SK |
6304 | block_name = gfc_current_block () == NULL |
6305 | ? NULL : gfc_current_block ()->name; | |
6de9cd9a | 6306 | |
03af1e4c | 6307 | switch (state) |
6de9cd9a | 6308 | { |
03af1e4c DK |
6309 | case COMP_ASSOCIATE: |
6310 | case COMP_BLOCK: | |
3a1fd30c | 6311 | if (!strncmp (block_name, "block@", strlen("block@"))) |
03af1e4c DK |
6312 | block_name = NULL; |
6313 | break; | |
6314 | ||
6315 | case COMP_CONTAINS: | |
6316 | case COMP_DERIVED_CONTAINS: | |
6de9cd9a | 6317 | state = gfc_state_stack->previous->state; |
636dff67 SK |
6318 | block_name = gfc_state_stack->previous->sym == NULL |
6319 | ? NULL : gfc_state_stack->previous->sym->name; | |
03af1e4c DK |
6320 | break; |
6321 | ||
6322 | default: | |
6323 | break; | |
6de9cd9a DN |
6324 | } |
6325 | ||
4668d6f9 PT |
6326 | abreviated_modproc_decl |
6327 | = gfc_current_block () | |
6328 | && gfc_current_block ()->abr_modproc_decl; | |
6329 | ||
6de9cd9a DN |
6330 | switch (state) |
6331 | { | |
6332 | case COMP_NONE: | |
6333 | case COMP_PROGRAM: | |
6334 | *st = ST_END_PROGRAM; | |
6335 | target = " program"; | |
ddc9ce91 | 6336 | eos_ok = 1; |
6de9cd9a DN |
6337 | break; |
6338 | ||
6339 | case COMP_SUBROUTINE: | |
6340 | *st = ST_END_SUBROUTINE; | |
4668d6f9 | 6341 | if (!abreviated_modproc_decl) |
6de9cd9a | 6342 | target = " subroutine"; |
4668d6f9 PT |
6343 | else |
6344 | target = " procedure"; | |
ddc9ce91 | 6345 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
6346 | break; |
6347 | ||
6348 | case COMP_FUNCTION: | |
6349 | *st = ST_END_FUNCTION; | |
4668d6f9 | 6350 | if (!abreviated_modproc_decl) |
6de9cd9a | 6351 | target = " function"; |
4668d6f9 PT |
6352 | else |
6353 | target = " procedure"; | |
ddc9ce91 | 6354 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
6355 | break; |
6356 | ||
6357 | case COMP_BLOCK_DATA: | |
6358 | *st = ST_END_BLOCK_DATA; | |
6359 | target = " block data"; | |
ddc9ce91 | 6360 | eos_ok = 1; |
6de9cd9a DN |
6361 | break; |
6362 | ||
6363 | case COMP_MODULE: | |
6364 | *st = ST_END_MODULE; | |
6365 | target = " module"; | |
ddc9ce91 | 6366 | eos_ok = 1; |
6de9cd9a DN |
6367 | break; |
6368 | ||
4668d6f9 PT |
6369 | case COMP_SUBMODULE: |
6370 | *st = ST_END_SUBMODULE; | |
6371 | target = " submodule"; | |
6372 | eos_ok = 1; | |
6373 | break; | |
6374 | ||
6de9cd9a DN |
6375 | case COMP_INTERFACE: |
6376 | *st = ST_END_INTERFACE; | |
6377 | target = " interface"; | |
ddc9ce91 | 6378 | eos_ok = 0; |
6de9cd9a DN |
6379 | break; |
6380 | ||
6381 | case COMP_DERIVED: | |
30b608eb | 6382 | case COMP_DERIVED_CONTAINS: |
6de9cd9a DN |
6383 | *st = ST_END_TYPE; |
6384 | target = " type"; | |
ddc9ce91 | 6385 | eos_ok = 0; |
6de9cd9a DN |
6386 | break; |
6387 | ||
03af1e4c DK |
6388 | case COMP_ASSOCIATE: |
6389 | *st = ST_END_ASSOCIATE; | |
6390 | target = " associate"; | |
6391 | eos_ok = 0; | |
6392 | break; | |
6393 | ||
9abe5e56 DK |
6394 | case COMP_BLOCK: |
6395 | *st = ST_END_BLOCK; | |
6396 | target = " block"; | |
6397 | eos_ok = 0; | |
6398 | break; | |
6399 | ||
6de9cd9a DN |
6400 | case COMP_IF: |
6401 | *st = ST_ENDIF; | |
6402 | target = " if"; | |
ddc9ce91 | 6403 | eos_ok = 0; |
6de9cd9a DN |
6404 | break; |
6405 | ||
6406 | case COMP_DO: | |
8c6a85e3 | 6407 | case COMP_DO_CONCURRENT: |
6de9cd9a DN |
6408 | *st = ST_ENDDO; |
6409 | target = " do"; | |
ddc9ce91 | 6410 | eos_ok = 0; |
6de9cd9a DN |
6411 | break; |
6412 | ||
d0a4a61c TB |
6413 | case COMP_CRITICAL: |
6414 | *st = ST_END_CRITICAL; | |
6415 | target = " critical"; | |
6416 | eos_ok = 0; | |
6417 | break; | |
6418 | ||
6de9cd9a | 6419 | case COMP_SELECT: |
cf2b3c22 | 6420 | case COMP_SELECT_TYPE: |
6de9cd9a DN |
6421 | *st = ST_END_SELECT; |
6422 | target = " select"; | |
ddc9ce91 | 6423 | eos_ok = 0; |
6de9cd9a DN |
6424 | break; |
6425 | ||
6426 | case COMP_FORALL: | |
6427 | *st = ST_END_FORALL; | |
6428 | target = " forall"; | |
ddc9ce91 | 6429 | eos_ok = 0; |
6de9cd9a DN |
6430 | break; |
6431 | ||
6432 | case COMP_WHERE: | |
6433 | *st = ST_END_WHERE; | |
6434 | target = " where"; | |
ddc9ce91 | 6435 | eos_ok = 0; |
6de9cd9a DN |
6436 | break; |
6437 | ||
25d8f0a2 TS |
6438 | case COMP_ENUM: |
6439 | *st = ST_END_ENUM; | |
6440 | target = " enum"; | |
6441 | eos_ok = 0; | |
6442 | last_initializer = NULL; | |
6443 | set_enum_kind (); | |
6444 | gfc_free_enum_history (); | |
6445 | break; | |
6446 | ||
6de9cd9a DN |
6447 | default: |
6448 | gfc_error ("Unexpected END statement at %C"); | |
6449 | goto cleanup; | |
6450 | } | |
6451 | ||
3a43b5b3 | 6452 | old_loc = gfc_current_locus; |
6de9cd9a DN |
6453 | if (gfc_match_eos () == MATCH_YES) |
6454 | { | |
272001a2 TB |
6455 | if (!eos_ok && (*st == ST_END_SUBROUTINE || *st == ST_END_FUNCTION)) |
6456 | { | |
524af0d6 JB |
6457 | if (!gfc_notify_std (GFC_STD_F2008, "END statement " |
6458 | "instead of %s statement at %L", | |
4668d6f9 PT |
6459 | abreviated_modproc_decl ? "END PROCEDURE" |
6460 | : gfc_ascii_statement(*st), &old_loc)) | |
272001a2 TB |
6461 | goto cleanup; |
6462 | } | |
6463 | else if (!eos_ok) | |
6de9cd9a | 6464 | { |
66e4ab31 | 6465 | /* We would have required END [something]. */ |
59ce85b5 TS |
6466 | gfc_error ("%s statement expected at %L", |
6467 | gfc_ascii_statement (*st), &old_loc); | |
6de9cd9a DN |
6468 | goto cleanup; |
6469 | } | |
6470 | ||
6471 | return MATCH_YES; | |
6472 | } | |
6473 | ||
6474 | /* Verify that we've got the sort of end-block that we're expecting. */ | |
6475 | if (gfc_match (target) != MATCH_YES) | |
6476 | { | |
4668d6f9 PT |
6477 | gfc_error ("Expecting %s statement at %L", abreviated_modproc_decl |
6478 | ? "END PROCEDURE" : gfc_ascii_statement(*st), &old_loc); | |
6de9cd9a DN |
6479 | goto cleanup; |
6480 | } | |
6481 | ||
3a43b5b3 | 6482 | old_loc = gfc_current_locus; |
6de9cd9a DN |
6483 | /* If we're at the end, make sure a block name wasn't required. */ |
6484 | if (gfc_match_eos () == MATCH_YES) | |
6485 | { | |
6486 | ||
690af379 | 6487 | if (*st != ST_ENDDO && *st != ST_ENDIF && *st != ST_END_SELECT |
d0a4a61c | 6488 | && *st != ST_END_FORALL && *st != ST_END_WHERE && *st != ST_END_BLOCK |
03af1e4c | 6489 | && *st != ST_END_ASSOCIATE && *st != ST_END_CRITICAL) |
6de9cd9a DN |
6490 | return MATCH_YES; |
6491 | ||
9abe5e56 | 6492 | if (!block_name) |
6de9cd9a DN |
6493 | return MATCH_YES; |
6494 | ||
c4100eae | 6495 | gfc_error ("Expected block name of %qs in %s statement at %L", |
3a43b5b3 | 6496 | block_name, gfc_ascii_statement (*st), &old_loc); |
6de9cd9a DN |
6497 | |
6498 | return MATCH_ERROR; | |
6499 | } | |
6500 | ||
6501 | /* END INTERFACE has a special handler for its several possible endings. */ | |
6502 | if (*st == ST_END_INTERFACE) | |
6503 | return gfc_match_end_interface (); | |
6504 | ||
66e4ab31 SK |
6505 | /* We haven't hit the end of statement, so what is left must be an |
6506 | end-name. */ | |
6de9cd9a DN |
6507 | m = gfc_match_space (); |
6508 | if (m == MATCH_YES) | |
6509 | m = gfc_match_name (name); | |
6510 | ||
6511 | if (m == MATCH_NO) | |
6512 | gfc_error ("Expected terminating name at %C"); | |
6513 | if (m != MATCH_YES) | |
6514 | goto cleanup; | |
6515 | ||
6516 | if (block_name == NULL) | |
6517 | goto syntax; | |
6518 | ||
3d5dc929 PT |
6519 | /* We have to pick out the declared submodule name from the composite |
6520 | required by F2008:11.2.3 para 2, which ends in the declared name. */ | |
6521 | if (state == COMP_SUBMODULE) | |
6522 | block_name = strchr (block_name, '.') + 1; | |
6523 | ||
3070bab4 | 6524 | if (strcmp (name, block_name) != 0 && strcmp (block_name, "ppr@") != 0) |
6de9cd9a | 6525 | { |
c4100eae | 6526 | gfc_error ("Expected label %qs for %s statement at %C", block_name, |
6de9cd9a DN |
6527 | gfc_ascii_statement (*st)); |
6528 | goto cleanup; | |
6529 | } | |
3070bab4 JW |
6530 | /* Procedure pointer as function result. */ |
6531 | else if (strcmp (block_name, "ppr@") == 0 | |
6532 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) != 0) | |
6533 | { | |
c4100eae | 6534 | gfc_error ("Expected label %qs for %s statement at %C", |
3070bab4 JW |
6535 | gfc_current_block ()->ns->proc_name->name, |
6536 | gfc_ascii_statement (*st)); | |
6537 | goto cleanup; | |
6538 | } | |
6de9cd9a DN |
6539 | |
6540 | if (gfc_match_eos () == MATCH_YES) | |
6541 | return MATCH_YES; | |
6542 | ||
6543 | syntax: | |
6544 | gfc_syntax_error (*st); | |
6545 | ||
6546 | cleanup: | |
63645982 | 6547 | gfc_current_locus = old_loc; |
0cab6b73 TK |
6548 | |
6549 | /* If we are missing an END BLOCK, we created a half-ready namespace. | |
6550 | Remove it from the parent namespace's sibling list. */ | |
6551 | ||
9f7ba208 | 6552 | while (state == COMP_BLOCK) |
0cab6b73 TK |
6553 | { |
6554 | parent_ns = gfc_current_ns->parent; | |
6555 | ||
6556 | nsp = &(gfc_state_stack->previous->tail->ext.block.ns); | |
6557 | ||
6558 | prev_ns = NULL; | |
6559 | ns = *nsp; | |
6560 | while (ns) | |
6561 | { | |
6562 | if (ns == gfc_current_ns) | |
6563 | { | |
6564 | if (prev_ns == NULL) | |
6565 | *nsp = NULL; | |
6566 | else | |
6567 | prev_ns->sibling = ns->sibling; | |
6568 | } | |
6569 | prev_ns = ns; | |
6570 | ns = ns->sibling; | |
6571 | } | |
6572 | ||
6573 | gfc_free_namespace (gfc_current_ns); | |
6574 | gfc_current_ns = parent_ns; | |
9f7ba208 LK |
6575 | gfc_state_stack = gfc_state_stack->previous; |
6576 | state = gfc_current_state (); | |
0cab6b73 TK |
6577 | } |
6578 | ||
6de9cd9a DN |
6579 | return MATCH_ERROR; |
6580 | } | |
6581 | ||
6582 | ||
6583 | ||
6584 | /***************** Attribute declaration statements ****************/ | |
6585 | ||
6586 | /* Set the attribute of a single variable. */ | |
6587 | ||
6588 | static match | |
6589 | attr_decl1 (void) | |
6590 | { | |
6591 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6592 | gfc_array_spec *as; | |
97440db5 ML |
6593 | |
6594 | /* Workaround -Wmaybe-uninitialized false positive during | |
6595 | profiledbootstrap by initializing them. */ | |
6596 | gfc_symbol *sym = NULL; | |
6de9cd9a DN |
6597 | locus var_locus; |
6598 | match m; | |
6599 | ||
6600 | as = NULL; | |
6601 | ||
6602 | m = gfc_match_name (name); | |
6603 | if (m != MATCH_YES) | |
6604 | goto cleanup; | |
6605 | ||
08a6b8e0 | 6606 | if (find_special (name, &sym, false)) |
6de9cd9a DN |
6607 | return MATCH_ERROR; |
6608 | ||
524af0d6 | 6609 | if (!check_function_name (name)) |
bb9de0c4 JW |
6610 | { |
6611 | m = MATCH_ERROR; | |
6612 | goto cleanup; | |
6613 | } | |
f5acf0f2 | 6614 | |
63645982 | 6615 | var_locus = gfc_current_locus; |
6de9cd9a DN |
6616 | |
6617 | /* Deal with possible array specification for certain attributes. */ | |
6618 | if (current_attr.dimension | |
be59db2d | 6619 | || current_attr.codimension |
6de9cd9a DN |
6620 | || current_attr.allocatable |
6621 | || current_attr.pointer | |
6622 | || current_attr.target) | |
6623 | { | |
be59db2d TB |
6624 | m = gfc_match_array_spec (&as, !current_attr.codimension, |
6625 | !current_attr.dimension | |
6626 | && !current_attr.pointer | |
6627 | && !current_attr.target); | |
6de9cd9a DN |
6628 | if (m == MATCH_ERROR) |
6629 | goto cleanup; | |
6630 | ||
6631 | if (current_attr.dimension && m == MATCH_NO) | |
6632 | { | |
636dff67 SK |
6633 | gfc_error ("Missing array specification at %L in DIMENSION " |
6634 | "statement", &var_locus); | |
6de9cd9a DN |
6635 | m = MATCH_ERROR; |
6636 | goto cleanup; | |
6637 | } | |
6638 | ||
1283ab12 TB |
6639 | if (current_attr.dimension && sym->value) |
6640 | { | |
6641 | gfc_error ("Dimensions specified for %s at %L after its " | |
6642 | "initialisation", sym->name, &var_locus); | |
6643 | m = MATCH_ERROR; | |
6644 | goto cleanup; | |
6645 | } | |
6646 | ||
be59db2d TB |
6647 | if (current_attr.codimension && m == MATCH_NO) |
6648 | { | |
6649 | gfc_error ("Missing array specification at %L in CODIMENSION " | |
6650 | "statement", &var_locus); | |
6651 | m = MATCH_ERROR; | |
6652 | goto cleanup; | |
6653 | } | |
6654 | ||
6de9cd9a DN |
6655 | if ((current_attr.allocatable || current_attr.pointer) |
6656 | && (m == MATCH_YES) && (as->type != AS_DEFERRED)) | |
6657 | { | |
636dff67 | 6658 | gfc_error ("Array specification must be deferred at %L", &var_locus); |
6de9cd9a DN |
6659 | m = MATCH_ERROR; |
6660 | goto cleanup; | |
6661 | } | |
6662 | } | |
6663 | ||
2e23972e JW |
6664 | /* Update symbol table. DIMENSION attribute is set in |
6665 | gfc_set_array_spec(). For CLASS variables, this must be applied | |
b04533af | 6666 | to the first component, or '_data' field. */ |
d40477b4 | 6667 | if (sym->ts.type == BT_CLASS && sym->ts.u.derived->attr.is_class) |
6de9cd9a | 6668 | { |
524af0d6 | 6669 | if (!gfc_copy_attr (&CLASS_DATA(sym)->attr, ¤t_attr, &var_locus)) |
2e23972e JW |
6670 | { |
6671 | m = MATCH_ERROR; | |
6672 | goto cleanup; | |
6673 | } | |
2e23972e JW |
6674 | } |
6675 | else | |
6676 | { | |
be59db2d | 6677 | if (current_attr.dimension == 0 && current_attr.codimension == 0 |
524af0d6 | 6678 | && !gfc_copy_attr (&sym->attr, ¤t_attr, &var_locus)) |
2e23972e JW |
6679 | { |
6680 | m = MATCH_ERROR; | |
6681 | goto cleanup; | |
6682 | } | |
6de9cd9a | 6683 | } |
f5acf0f2 | 6684 | |
528622fd | 6685 | if (sym->ts.type == BT_CLASS |
9b6da3c7 | 6686 | && !gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as)) |
96d9b22c JW |
6687 | { |
6688 | m = MATCH_ERROR; | |
6689 | goto cleanup; | |
6690 | } | |
6de9cd9a | 6691 | |
524af0d6 | 6692 | if (!gfc_set_array_spec (sym, as, &var_locus)) |
6de9cd9a DN |
6693 | { |
6694 | m = MATCH_ERROR; | |
6695 | goto cleanup; | |
6696 | } | |
d51347f9 | 6697 | |
83d890b9 AL |
6698 | if (sym->attr.cray_pointee && sym->as != NULL) |
6699 | { | |
6700 | /* Fix the array spec. */ | |
f5acf0f2 | 6701 | m = gfc_mod_pointee_as (sym->as); |
83d890b9 AL |
6702 | if (m == MATCH_ERROR) |
6703 | goto cleanup; | |
6704 | } | |
6de9cd9a | 6705 | |
524af0d6 | 6706 | if (!gfc_add_attribute (&sym->attr, &var_locus)) |
1902704e PT |
6707 | { |
6708 | m = MATCH_ERROR; | |
6709 | goto cleanup; | |
6710 | } | |
6711 | ||
6de9cd9a DN |
6712 | if ((current_attr.external || current_attr.intrinsic) |
6713 | && sym->attr.flavor != FL_PROCEDURE | |
524af0d6 | 6714 | && !gfc_add_flavor (&sym->attr, FL_PROCEDURE, sym->name, NULL)) |
6de9cd9a DN |
6715 | { |
6716 | m = MATCH_ERROR; | |
6717 | goto cleanup; | |
6718 | } | |
6719 | ||
3070bab4 JW |
6720 | add_hidden_procptr_result (sym); |
6721 | ||
6de9cd9a DN |
6722 | return MATCH_YES; |
6723 | ||
6724 | cleanup: | |
6725 | gfc_free_array_spec (as); | |
6726 | return m; | |
6727 | } | |
6728 | ||
6729 | ||
6730 | /* Generic attribute declaration subroutine. Used for attributes that | |
6731 | just have a list of names. */ | |
6732 | ||
6733 | static match | |
6734 | attr_decl (void) | |
6735 | { | |
6736 | match m; | |
6737 | ||
6738 | /* Gobble the optional double colon, by simply ignoring the result | |
6739 | of gfc_match(). */ | |
6740 | gfc_match (" ::"); | |
6741 | ||
6742 | for (;;) | |
6743 | { | |
6744 | m = attr_decl1 (); | |
6745 | if (m != MATCH_YES) | |
6746 | break; | |
6747 | ||
6748 | if (gfc_match_eos () == MATCH_YES) | |
6749 | { | |
6750 | m = MATCH_YES; | |
6751 | break; | |
6752 | } | |
6753 | ||
6754 | if (gfc_match_char (',') != MATCH_YES) | |
6755 | { | |
6756 | gfc_error ("Unexpected character in variable list at %C"); | |
6757 | m = MATCH_ERROR; | |
6758 | break; | |
6759 | } | |
6760 | } | |
6761 | ||
6762 | return m; | |
6763 | } | |
6764 | ||
6765 | ||
83d890b9 AL |
6766 | /* This routine matches Cray Pointer declarations of the form: |
6767 | pointer ( <pointer>, <pointee> ) | |
6768 | or | |
d51347f9 TB |
6769 | pointer ( <pointer1>, <pointee1> ), ( <pointer2>, <pointee2> ), ... |
6770 | The pointer, if already declared, should be an integer. Otherwise, we | |
83d890b9 AL |
6771 | set it as BT_INTEGER with kind gfc_index_integer_kind. The pointee may |
6772 | be either a scalar, or an array declaration. No space is allocated for | |
d51347f9 | 6773 | the pointee. For the statement |
83d890b9 AL |
6774 | pointer (ipt, ar(10)) |
6775 | any subsequent uses of ar will be translated (in C-notation) as | |
d51347f9 | 6776 | ar(i) => ((<type> *) ipt)(i) |
b122dc6a | 6777 | After gimplification, pointee variable will disappear in the code. */ |
83d890b9 AL |
6778 | |
6779 | static match | |
6780 | cray_pointer_decl (void) | |
6781 | { | |
6782 | match m; | |
be59db2d | 6783 | gfc_array_spec *as = NULL; |
83d890b9 AL |
6784 | gfc_symbol *cptr; /* Pointer symbol. */ |
6785 | gfc_symbol *cpte; /* Pointee symbol. */ | |
6786 | locus var_locus; | |
6787 | bool done = false; | |
6788 | ||
6789 | while (!done) | |
6790 | { | |
6791 | if (gfc_match_char ('(') != MATCH_YES) | |
6792 | { | |
a4d9b221 | 6793 | gfc_error ("Expected %<(%> at %C"); |
d51347f9 | 6794 | return MATCH_ERROR; |
83d890b9 | 6795 | } |
d51347f9 | 6796 | |
83d890b9 AL |
6797 | /* Match pointer. */ |
6798 | var_locus = gfc_current_locus; | |
6799 | gfc_clear_attr (¤t_attr); | |
6800 | gfc_add_cray_pointer (¤t_attr, &var_locus); | |
6801 | current_ts.type = BT_INTEGER; | |
6802 | current_ts.kind = gfc_index_integer_kind; | |
6803 | ||
d51347f9 | 6804 | m = gfc_match_symbol (&cptr, 0); |
83d890b9 AL |
6805 | if (m != MATCH_YES) |
6806 | { | |
6807 | gfc_error ("Expected variable name at %C"); | |
6808 | return m; | |
6809 | } | |
d51347f9 | 6810 | |
524af0d6 | 6811 | if (!gfc_add_cray_pointer (&cptr->attr, &var_locus)) |
83d890b9 AL |
6812 | return MATCH_ERROR; |
6813 | ||
d51347f9 | 6814 | gfc_set_sym_referenced (cptr); |
83d890b9 AL |
6815 | |
6816 | if (cptr->ts.type == BT_UNKNOWN) /* Override the type, if necessary. */ | |
6817 | { | |
6818 | cptr->ts.type = BT_INTEGER; | |
d51347f9 | 6819 | cptr->ts.kind = gfc_index_integer_kind; |
83d890b9 AL |
6820 | } |
6821 | else if (cptr->ts.type != BT_INTEGER) | |
6822 | { | |
e25a0da3 | 6823 | gfc_error ("Cray pointer at %C must be an integer"); |
83d890b9 AL |
6824 | return MATCH_ERROR; |
6825 | } | |
6826 | else if (cptr->ts.kind < gfc_index_integer_kind) | |
db30e21c | 6827 | gfc_warning (0, "Cray pointer at %C has %d bytes of precision;" |
e25a0da3 | 6828 | " memory addresses require %d bytes", |
636dff67 | 6829 | cptr->ts.kind, gfc_index_integer_kind); |
83d890b9 AL |
6830 | |
6831 | if (gfc_match_char (',') != MATCH_YES) | |
6832 | { | |
6833 | gfc_error ("Expected \",\" at %C"); | |
d51347f9 | 6834 | return MATCH_ERROR; |
83d890b9 AL |
6835 | } |
6836 | ||
d51347f9 | 6837 | /* Match Pointee. */ |
83d890b9 AL |
6838 | var_locus = gfc_current_locus; |
6839 | gfc_clear_attr (¤t_attr); | |
6840 | gfc_add_cray_pointee (¤t_attr, &var_locus); | |
6841 | current_ts.type = BT_UNKNOWN; | |
6842 | current_ts.kind = 0; | |
6843 | ||
6844 | m = gfc_match_symbol (&cpte, 0); | |
6845 | if (m != MATCH_YES) | |
6846 | { | |
6847 | gfc_error ("Expected variable name at %C"); | |
6848 | return m; | |
6849 | } | |
d51347f9 | 6850 | |
83d890b9 | 6851 | /* Check for an optional array spec. */ |
be59db2d | 6852 | m = gfc_match_array_spec (&as, true, false); |
83d890b9 AL |
6853 | if (m == MATCH_ERROR) |
6854 | { | |
6855 | gfc_free_array_spec (as); | |
6856 | return m; | |
6857 | } | |
6858 | else if (m == MATCH_NO) | |
6859 | { | |
6860 | gfc_free_array_spec (as); | |
6861 | as = NULL; | |
f5acf0f2 | 6862 | } |
83d890b9 | 6863 | |
524af0d6 | 6864 | if (!gfc_add_cray_pointee (&cpte->attr, &var_locus)) |
83d890b9 AL |
6865 | return MATCH_ERROR; |
6866 | ||
6867 | gfc_set_sym_referenced (cpte); | |
6868 | ||
6869 | if (cpte->as == NULL) | |
6870 | { | |
524af0d6 | 6871 | if (!gfc_set_array_spec (cpte, as, &var_locus)) |
83d890b9 AL |
6872 | gfc_internal_error ("Couldn't set Cray pointee array spec."); |
6873 | } | |
6874 | else if (as != NULL) | |
6875 | { | |
e25a0da3 | 6876 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
6877 | gfc_free_array_spec (as); |
6878 | return MATCH_ERROR; | |
6879 | } | |
f5acf0f2 | 6880 | |
83d890b9 | 6881 | as = NULL; |
f5acf0f2 | 6882 | |
83d890b9 AL |
6883 | if (cpte->as != NULL) |
6884 | { | |
6885 | /* Fix array spec. */ | |
6886 | m = gfc_mod_pointee_as (cpte->as); | |
6887 | if (m == MATCH_ERROR) | |
6888 | return m; | |
f5acf0f2 PT |
6889 | } |
6890 | ||
83d890b9 | 6891 | /* Point the Pointee at the Pointer. */ |
b122dc6a | 6892 | cpte->cp_pointer = cptr; |
83d890b9 AL |
6893 | |
6894 | if (gfc_match_char (')') != MATCH_YES) | |
6895 | { | |
6896 | gfc_error ("Expected \")\" at %C"); | |
f5acf0f2 | 6897 | return MATCH_ERROR; |
83d890b9 AL |
6898 | } |
6899 | m = gfc_match_char (','); | |
6900 | if (m != MATCH_YES) | |
6901 | done = true; /* Stop searching for more declarations. */ | |
6902 | ||
6903 | } | |
f5acf0f2 | 6904 | |
83d890b9 AL |
6905 | if (m == MATCH_ERROR /* Failed when trying to find ',' above. */ |
6906 | || gfc_match_eos () != MATCH_YES) | |
6907 | { | |
a4d9b221 | 6908 | gfc_error ("Expected %<,%> or end of statement at %C"); |
83d890b9 AL |
6909 | return MATCH_ERROR; |
6910 | } | |
6911 | return MATCH_YES; | |
6912 | } | |
6913 | ||
6914 | ||
6de9cd9a DN |
6915 | match |
6916 | gfc_match_external (void) | |
6917 | { | |
6918 | ||
6919 | gfc_clear_attr (¤t_attr); | |
1902704e | 6920 | current_attr.external = 1; |
6de9cd9a DN |
6921 | |
6922 | return attr_decl (); | |
6923 | } | |
6924 | ||
6925 | ||
6de9cd9a DN |
6926 | match |
6927 | gfc_match_intent (void) | |
6928 | { | |
6929 | sym_intent intent; | |
6930 | ||
9abe5e56 DK |
6931 | /* This is not allowed within a BLOCK construct! */ |
6932 | if (gfc_current_state () == COMP_BLOCK) | |
6933 | { | |
6934 | gfc_error ("INTENT is not allowed inside of BLOCK at %C"); | |
6935 | return MATCH_ERROR; | |
6936 | } | |
6937 | ||
6de9cd9a DN |
6938 | intent = match_intent_spec (); |
6939 | if (intent == INTENT_UNKNOWN) | |
6940 | return MATCH_ERROR; | |
6941 | ||
6942 | gfc_clear_attr (¤t_attr); | |
1902704e | 6943 | current_attr.intent = intent; |
6de9cd9a DN |
6944 | |
6945 | return attr_decl (); | |
6946 | } | |
6947 | ||
6948 | ||
6949 | match | |
6950 | gfc_match_intrinsic (void) | |
6951 | { | |
6952 | ||
6953 | gfc_clear_attr (¤t_attr); | |
1902704e | 6954 | current_attr.intrinsic = 1; |
6de9cd9a DN |
6955 | |
6956 | return attr_decl (); | |
6957 | } | |
6958 | ||
6959 | ||
6960 | match | |
6961 | gfc_match_optional (void) | |
6962 | { | |
9abe5e56 DK |
6963 | /* This is not allowed within a BLOCK construct! */ |
6964 | if (gfc_current_state () == COMP_BLOCK) | |
6965 | { | |
6966 | gfc_error ("OPTIONAL is not allowed inside of BLOCK at %C"); | |
6967 | return MATCH_ERROR; | |
6968 | } | |
6de9cd9a DN |
6969 | |
6970 | gfc_clear_attr (¤t_attr); | |
1902704e | 6971 | current_attr.optional = 1; |
6de9cd9a DN |
6972 | |
6973 | return attr_decl (); | |
6974 | } | |
6975 | ||
6976 | ||
6977 | match | |
6978 | gfc_match_pointer (void) | |
6979 | { | |
83d890b9 | 6980 | gfc_gobble_whitespace (); |
8fc541d3 | 6981 | if (gfc_peek_ascii_char () == '(') |
83d890b9 | 6982 | { |
c61819ff | 6983 | if (!flag_cray_pointer) |
83d890b9 | 6984 | { |
636dff67 SK |
6985 | gfc_error ("Cray pointer declaration at %C requires -fcray-pointer " |
6986 | "flag"); | |
83d890b9 AL |
6987 | return MATCH_ERROR; |
6988 | } | |
6989 | return cray_pointer_decl (); | |
6990 | } | |
6991 | else | |
6992 | { | |
6993 | gfc_clear_attr (¤t_attr); | |
1902704e | 6994 | current_attr.pointer = 1; |
f5acf0f2 | 6995 | |
83d890b9 AL |
6996 | return attr_decl (); |
6997 | } | |
6de9cd9a DN |
6998 | } |
6999 | ||
7000 | ||
7001 | match | |
7002 | gfc_match_allocatable (void) | |
7003 | { | |
6de9cd9a | 7004 | gfc_clear_attr (¤t_attr); |
1902704e | 7005 | current_attr.allocatable = 1; |
6de9cd9a DN |
7006 | |
7007 | return attr_decl (); | |
7008 | } | |
7009 | ||
7010 | ||
be59db2d TB |
7011 | match |
7012 | gfc_match_codimension (void) | |
7013 | { | |
7014 | gfc_clear_attr (¤t_attr); | |
7015 | current_attr.codimension = 1; | |
7016 | ||
7017 | return attr_decl (); | |
7018 | } | |
7019 | ||
7020 | ||
fe4e525c TB |
7021 | match |
7022 | gfc_match_contiguous (void) | |
7023 | { | |
524af0d6 | 7024 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS statement at %C")) |
fe4e525c TB |
7025 | return MATCH_ERROR; |
7026 | ||
7027 | gfc_clear_attr (¤t_attr); | |
7028 | current_attr.contiguous = 1; | |
7029 | ||
7030 | return attr_decl (); | |
7031 | } | |
7032 | ||
7033 | ||
6de9cd9a DN |
7034 | match |
7035 | gfc_match_dimension (void) | |
7036 | { | |
6de9cd9a | 7037 | gfc_clear_attr (¤t_attr); |
1902704e | 7038 | current_attr.dimension = 1; |
6de9cd9a DN |
7039 | |
7040 | return attr_decl (); | |
7041 | } | |
7042 | ||
7043 | ||
7044 | match | |
7045 | gfc_match_target (void) | |
7046 | { | |
6de9cd9a | 7047 | gfc_clear_attr (¤t_attr); |
1902704e | 7048 | current_attr.target = 1; |
6de9cd9a DN |
7049 | |
7050 | return attr_decl (); | |
7051 | } | |
7052 | ||
7053 | ||
7054 | /* Match the list of entities being specified in a PUBLIC or PRIVATE | |
7055 | statement. */ | |
7056 | ||
7057 | static match | |
7058 | access_attr_decl (gfc_statement st) | |
7059 | { | |
7060 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7061 | interface_type type; | |
7062 | gfc_user_op *uop; | |
c3f34952 | 7063 | gfc_symbol *sym, *dt_sym; |
a1ee985f | 7064 | gfc_intrinsic_op op; |
6de9cd9a DN |
7065 | match m; |
7066 | ||
7067 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7068 | goto done; | |
7069 | ||
7070 | for (;;) | |
7071 | { | |
a1ee985f | 7072 | m = gfc_match_generic_spec (&type, name, &op); |
6de9cd9a DN |
7073 | if (m == MATCH_NO) |
7074 | goto syntax; | |
7075 | if (m == MATCH_ERROR) | |
7076 | return MATCH_ERROR; | |
7077 | ||
7078 | switch (type) | |
7079 | { | |
7080 | case INTERFACE_NAMELESS: | |
9e1d712c | 7081 | case INTERFACE_ABSTRACT: |
6de9cd9a DN |
7082 | goto syntax; |
7083 | ||
7084 | case INTERFACE_GENERIC: | |
7085 | if (gfc_get_symbol (name, NULL, &sym)) | |
7086 | goto done; | |
7087 | ||
524af0d6 JB |
7088 | if (!gfc_add_access (&sym->attr, |
7089 | (st == ST_PUBLIC) | |
7090 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
7091 | sym->name, NULL)) | |
6de9cd9a DN |
7092 | return MATCH_ERROR; |
7093 | ||
c3f34952 | 7094 | if (sym->attr.generic && (dt_sym = gfc_find_dt_in_generic (sym)) |
524af0d6 JB |
7095 | && !gfc_add_access (&dt_sym->attr, |
7096 | (st == ST_PUBLIC) | |
7097 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
7098 | sym->name, NULL)) | |
c3f34952 TB |
7099 | return MATCH_ERROR; |
7100 | ||
6de9cd9a DN |
7101 | break; |
7102 | ||
7103 | case INTERFACE_INTRINSIC_OP: | |
a1ee985f | 7104 | if (gfc_current_ns->operator_access[op] == ACCESS_UNKNOWN) |
6de9cd9a | 7105 | { |
fb03a37e TK |
7106 | gfc_intrinsic_op other_op; |
7107 | ||
a1ee985f | 7108 | gfc_current_ns->operator_access[op] = |
6de9cd9a | 7109 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; |
fb03a37e TK |
7110 | |
7111 | /* Handle the case if there is another op with the same | |
7112 | function, for INTRINSIC_EQ vs. INTRINSIC_EQ_OS and so on. */ | |
7113 | other_op = gfc_equivalent_op (op); | |
7114 | ||
7115 | if (other_op != INTRINSIC_NONE) | |
7116 | gfc_current_ns->operator_access[other_op] = | |
7117 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
7118 | ||
6de9cd9a DN |
7119 | } |
7120 | else | |
7121 | { | |
7122 | gfc_error ("Access specification of the %s operator at %C has " | |
a1ee985f | 7123 | "already been specified", gfc_op2string (op)); |
6de9cd9a DN |
7124 | goto done; |
7125 | } | |
7126 | ||
7127 | break; | |
7128 | ||
7129 | case INTERFACE_USER_OP: | |
7130 | uop = gfc_get_uop (name); | |
7131 | ||
7132 | if (uop->access == ACCESS_UNKNOWN) | |
7133 | { | |
636dff67 SK |
7134 | uop->access = (st == ST_PUBLIC) |
7135 | ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
6de9cd9a DN |
7136 | } |
7137 | else | |
7138 | { | |
636dff67 SK |
7139 | gfc_error ("Access specification of the .%s. operator at %C " |
7140 | "has already been specified", sym->name); | |
6de9cd9a DN |
7141 | goto done; |
7142 | } | |
7143 | ||
7144 | break; | |
7145 | } | |
7146 | ||
7147 | if (gfc_match_char (',') == MATCH_NO) | |
7148 | break; | |
7149 | } | |
7150 | ||
7151 | if (gfc_match_eos () != MATCH_YES) | |
7152 | goto syntax; | |
7153 | return MATCH_YES; | |
7154 | ||
7155 | syntax: | |
7156 | gfc_syntax_error (st); | |
7157 | ||
7158 | done: | |
7159 | return MATCH_ERROR; | |
7160 | } | |
7161 | ||
7162 | ||
ee7e677f TB |
7163 | match |
7164 | gfc_match_protected (void) | |
7165 | { | |
7166 | gfc_symbol *sym; | |
7167 | match m; | |
7168 | ||
73641c88 SK |
7169 | if (!gfc_current_ns->proc_name |
7170 | || gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
ee7e677f TB |
7171 | { |
7172 | gfc_error ("PROTECTED at %C only allowed in specification " | |
7173 | "part of a module"); | |
7174 | return MATCH_ERROR; | |
7175 | ||
7176 | } | |
7177 | ||
524af0d6 | 7178 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED statement at %C")) |
ee7e677f TB |
7179 | return MATCH_ERROR; |
7180 | ||
7181 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7182 | { | |
7183 | return MATCH_ERROR; | |
7184 | } | |
7185 | ||
7186 | if (gfc_match_eos () == MATCH_YES) | |
7187 | goto syntax; | |
7188 | ||
7189 | for(;;) | |
7190 | { | |
7191 | m = gfc_match_symbol (&sym, 0); | |
7192 | switch (m) | |
7193 | { | |
7194 | case MATCH_YES: | |
524af0d6 | 7195 | if (!gfc_add_protected (&sym->attr, sym->name, &gfc_current_locus)) |
ee7e677f TB |
7196 | return MATCH_ERROR; |
7197 | goto next_item; | |
7198 | ||
7199 | case MATCH_NO: | |
7200 | break; | |
7201 | ||
7202 | case MATCH_ERROR: | |
7203 | return MATCH_ERROR; | |
7204 | } | |
7205 | ||
7206 | next_item: | |
7207 | if (gfc_match_eos () == MATCH_YES) | |
7208 | break; | |
7209 | if (gfc_match_char (',') != MATCH_YES) | |
7210 | goto syntax; | |
7211 | } | |
7212 | ||
7213 | return MATCH_YES; | |
7214 | ||
7215 | syntax: | |
7216 | gfc_error ("Syntax error in PROTECTED statement at %C"); | |
7217 | return MATCH_ERROR; | |
7218 | } | |
7219 | ||
7220 | ||
86bf520d | 7221 | /* The PRIVATE statement is a bit weird in that it can be an attribute |
df2fba9e | 7222 | declaration, but also works as a standalone statement inside of a |
6de9cd9a DN |
7223 | type declaration or a module. */ |
7224 | ||
7225 | match | |
636dff67 | 7226 | gfc_match_private (gfc_statement *st) |
6de9cd9a DN |
7227 | { |
7228 | ||
7229 | if (gfc_match ("private") != MATCH_YES) | |
7230 | return MATCH_NO; | |
7231 | ||
d51347f9 | 7232 | if (gfc_current_state () != COMP_MODULE |
30b608eb DK |
7233 | && !(gfc_current_state () == COMP_DERIVED |
7234 | && gfc_state_stack->previous | |
7235 | && gfc_state_stack->previous->state == COMP_MODULE) | |
7236 | && !(gfc_current_state () == COMP_DERIVED_CONTAINS | |
7237 | && gfc_state_stack->previous && gfc_state_stack->previous->previous | |
7238 | && gfc_state_stack->previous->previous->state == COMP_MODULE)) | |
d51347f9 TB |
7239 | { |
7240 | gfc_error ("PRIVATE statement at %C is only allowed in the " | |
7241 | "specification part of a module"); | |
7242 | return MATCH_ERROR; | |
7243 | } | |
7244 | ||
6de9cd9a DN |
7245 | if (gfc_current_state () == COMP_DERIVED) |
7246 | { | |
7247 | if (gfc_match_eos () == MATCH_YES) | |
7248 | { | |
7249 | *st = ST_PRIVATE; | |
7250 | return MATCH_YES; | |
7251 | } | |
7252 | ||
7253 | gfc_syntax_error (ST_PRIVATE); | |
7254 | return MATCH_ERROR; | |
7255 | } | |
7256 | ||
7257 | if (gfc_match_eos () == MATCH_YES) | |
7258 | { | |
7259 | *st = ST_PRIVATE; | |
7260 | return MATCH_YES; | |
7261 | } | |
7262 | ||
7263 | *st = ST_ATTR_DECL; | |
7264 | return access_attr_decl (ST_PRIVATE); | |
7265 | } | |
7266 | ||
7267 | ||
7268 | match | |
636dff67 | 7269 | gfc_match_public (gfc_statement *st) |
6de9cd9a DN |
7270 | { |
7271 | ||
7272 | if (gfc_match ("public") != MATCH_YES) | |
7273 | return MATCH_NO; | |
7274 | ||
d51347f9 TB |
7275 | if (gfc_current_state () != COMP_MODULE) |
7276 | { | |
7277 | gfc_error ("PUBLIC statement at %C is only allowed in the " | |
7278 | "specification part of a module"); | |
7279 | return MATCH_ERROR; | |
7280 | } | |
7281 | ||
6de9cd9a DN |
7282 | if (gfc_match_eos () == MATCH_YES) |
7283 | { | |
7284 | *st = ST_PUBLIC; | |
7285 | return MATCH_YES; | |
7286 | } | |
7287 | ||
7288 | *st = ST_ATTR_DECL; | |
7289 | return access_attr_decl (ST_PUBLIC); | |
7290 | } | |
7291 | ||
7292 | ||
7293 | /* Workhorse for gfc_match_parameter. */ | |
7294 | ||
7295 | static match | |
7296 | do_parm (void) | |
7297 | { | |
7298 | gfc_symbol *sym; | |
7299 | gfc_expr *init; | |
7300 | match m; | |
524af0d6 | 7301 | bool t; |
6de9cd9a DN |
7302 | |
7303 | m = gfc_match_symbol (&sym, 0); | |
7304 | if (m == MATCH_NO) | |
7305 | gfc_error ("Expected variable name at %C in PARAMETER statement"); | |
7306 | ||
7307 | if (m != MATCH_YES) | |
7308 | return m; | |
7309 | ||
7310 | if (gfc_match_char ('=') == MATCH_NO) | |
7311 | { | |
7312 | gfc_error ("Expected = sign in PARAMETER statement at %C"); | |
7313 | return MATCH_ERROR; | |
7314 | } | |
7315 | ||
7316 | m = gfc_match_init_expr (&init); | |
7317 | if (m == MATCH_NO) | |
7318 | gfc_error ("Expected expression at %C in PARAMETER statement"); | |
7319 | if (m != MATCH_YES) | |
7320 | return m; | |
7321 | ||
7322 | if (sym->ts.type == BT_UNKNOWN | |
524af0d6 | 7323 | && !gfc_set_default_type (sym, 1, NULL)) |
6de9cd9a DN |
7324 | { |
7325 | m = MATCH_ERROR; | |
7326 | goto cleanup; | |
7327 | } | |
7328 | ||
524af0d6 JB |
7329 | if (!gfc_check_assign_symbol (sym, NULL, init) |
7330 | || !gfc_add_flavor (&sym->attr, FL_PARAMETER, sym->name, NULL)) | |
6de9cd9a DN |
7331 | { |
7332 | m = MATCH_ERROR; | |
7333 | goto cleanup; | |
7334 | } | |
7335 | ||
1283ab12 TB |
7336 | if (sym->value) |
7337 | { | |
7338 | gfc_error ("Initializing already initialized variable at %C"); | |
7339 | m = MATCH_ERROR; | |
7340 | goto cleanup; | |
7341 | } | |
7342 | ||
7919373d | 7343 | t = add_init_expr_to_sym (sym->name, &init, &gfc_current_locus); |
524af0d6 | 7344 | return (t) ? MATCH_YES : MATCH_ERROR; |
6de9cd9a DN |
7345 | |
7346 | cleanup: | |
7347 | gfc_free_expr (init); | |
7348 | return m; | |
7349 | } | |
7350 | ||
7351 | ||
7352 | /* Match a parameter statement, with the weird syntax that these have. */ | |
7353 | ||
7354 | match | |
7355 | gfc_match_parameter (void) | |
7356 | { | |
7357 | match m; | |
7358 | ||
7359 | if (gfc_match_char ('(') == MATCH_NO) | |
7360 | return MATCH_NO; | |
7361 | ||
7362 | for (;;) | |
7363 | { | |
7364 | m = do_parm (); | |
7365 | if (m != MATCH_YES) | |
7366 | break; | |
7367 | ||
7368 | if (gfc_match (" )%t") == MATCH_YES) | |
7369 | break; | |
7370 | ||
7371 | if (gfc_match_char (',') != MATCH_YES) | |
7372 | { | |
7373 | gfc_error ("Unexpected characters in PARAMETER statement at %C"); | |
7374 | m = MATCH_ERROR; | |
7375 | break; | |
7376 | } | |
7377 | } | |
7378 | ||
7379 | return m; | |
7380 | } | |
7381 | ||
7382 | ||
7383 | /* Save statements have a special syntax. */ | |
7384 | ||
7385 | match | |
7386 | gfc_match_save (void) | |
7387 | { | |
9056bd70 TS |
7388 | char n[GFC_MAX_SYMBOL_LEN+1]; |
7389 | gfc_common_head *c; | |
6de9cd9a DN |
7390 | gfc_symbol *sym; |
7391 | match m; | |
7392 | ||
7393 | if (gfc_match_eos () == MATCH_YES) | |
7394 | { | |
7395 | if (gfc_current_ns->seen_save) | |
7396 | { | |
524af0d6 JB |
7397 | if (!gfc_notify_std (GFC_STD_LEGACY, "Blanket SAVE statement at %C " |
7398 | "follows previous SAVE statement")) | |
09e87839 | 7399 | return MATCH_ERROR; |
6de9cd9a DN |
7400 | } |
7401 | ||
7402 | gfc_current_ns->save_all = gfc_current_ns->seen_save = 1; | |
7403 | return MATCH_YES; | |
7404 | } | |
7405 | ||
7406 | if (gfc_current_ns->save_all) | |
7407 | { | |
524af0d6 JB |
7408 | if (!gfc_notify_std (GFC_STD_LEGACY, "SAVE statement at %C follows " |
7409 | "blanket SAVE statement")) | |
09e87839 | 7410 | return MATCH_ERROR; |
6de9cd9a DN |
7411 | } |
7412 | ||
7413 | gfc_match (" ::"); | |
7414 | ||
7415 | for (;;) | |
7416 | { | |
7417 | m = gfc_match_symbol (&sym, 0); | |
7418 | switch (m) | |
7419 | { | |
7420 | case MATCH_YES: | |
524af0d6 JB |
7421 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, |
7422 | &gfc_current_locus)) | |
6de9cd9a DN |
7423 | return MATCH_ERROR; |
7424 | goto next_item; | |
7425 | ||
7426 | case MATCH_NO: | |
7427 | break; | |
7428 | ||
7429 | case MATCH_ERROR: | |
7430 | return MATCH_ERROR; | |
7431 | } | |
7432 | ||
9056bd70 | 7433 | m = gfc_match (" / %n /", &n); |
6de9cd9a DN |
7434 | if (m == MATCH_ERROR) |
7435 | return MATCH_ERROR; | |
7436 | if (m == MATCH_NO) | |
7437 | goto syntax; | |
7438 | ||
53814b8f | 7439 | c = gfc_get_common (n, 0); |
9056bd70 TS |
7440 | c->saved = 1; |
7441 | ||
6de9cd9a DN |
7442 | gfc_current_ns->seen_save = 1; |
7443 | ||
7444 | next_item: | |
7445 | if (gfc_match_eos () == MATCH_YES) | |
7446 | break; | |
7447 | if (gfc_match_char (',') != MATCH_YES) | |
7448 | goto syntax; | |
7449 | } | |
7450 | ||
7451 | return MATCH_YES; | |
7452 | ||
7453 | syntax: | |
7454 | gfc_error ("Syntax error in SAVE statement at %C"); | |
7455 | return MATCH_ERROR; | |
7456 | } | |
7457 | ||
7458 | ||
06469efd PT |
7459 | match |
7460 | gfc_match_value (void) | |
7461 | { | |
7462 | gfc_symbol *sym; | |
7463 | match m; | |
7464 | ||
9abe5e56 DK |
7465 | /* This is not allowed within a BLOCK construct! */ |
7466 | if (gfc_current_state () == COMP_BLOCK) | |
7467 | { | |
7468 | gfc_error ("VALUE is not allowed inside of BLOCK at %C"); | |
7469 | return MATCH_ERROR; | |
7470 | } | |
7471 | ||
524af0d6 | 7472 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE statement at %C")) |
06469efd PT |
7473 | return MATCH_ERROR; |
7474 | ||
7475 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7476 | { | |
7477 | return MATCH_ERROR; | |
7478 | } | |
7479 | ||
7480 | if (gfc_match_eos () == MATCH_YES) | |
7481 | goto syntax; | |
7482 | ||
7483 | for(;;) | |
7484 | { | |
7485 | m = gfc_match_symbol (&sym, 0); | |
7486 | switch (m) | |
7487 | { | |
7488 | case MATCH_YES: | |
524af0d6 | 7489 | if (!gfc_add_value (&sym->attr, sym->name, &gfc_current_locus)) |
06469efd PT |
7490 | return MATCH_ERROR; |
7491 | goto next_item; | |
7492 | ||
7493 | case MATCH_NO: | |
7494 | break; | |
7495 | ||
7496 | case MATCH_ERROR: | |
7497 | return MATCH_ERROR; | |
7498 | } | |
7499 | ||
7500 | next_item: | |
7501 | if (gfc_match_eos () == MATCH_YES) | |
7502 | break; | |
7503 | if (gfc_match_char (',') != MATCH_YES) | |
7504 | goto syntax; | |
7505 | } | |
7506 | ||
7507 | return MATCH_YES; | |
7508 | ||
7509 | syntax: | |
7510 | gfc_error ("Syntax error in VALUE statement at %C"); | |
7511 | return MATCH_ERROR; | |
7512 | } | |
7513 | ||
66e4ab31 | 7514 | |
775e6c3a TB |
7515 | match |
7516 | gfc_match_volatile (void) | |
7517 | { | |
7518 | gfc_symbol *sym; | |
7519 | match m; | |
7520 | ||
524af0d6 | 7521 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE statement at %C")) |
775e6c3a TB |
7522 | return MATCH_ERROR; |
7523 | ||
7524 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7525 | { | |
7526 | return MATCH_ERROR; | |
7527 | } | |
7528 | ||
7529 | if (gfc_match_eos () == MATCH_YES) | |
7530 | goto syntax; | |
7531 | ||
7532 | for(;;) | |
7533 | { | |
f5acf0f2 | 7534 | /* VOLATILE is special because it can be added to host-associated |
1cc0e193 | 7535 | symbols locally. Except for coarrays. */ |
9bce3c1c | 7536 | m = gfc_match_symbol (&sym, 1); |
775e6c3a TB |
7537 | switch (m) |
7538 | { | |
7539 | case MATCH_YES: | |
be59db2d TB |
7540 | /* F2008, C560+C561. VOLATILE for host-/use-associated variable or |
7541 | for variable in a BLOCK which is defined outside of the BLOCK. */ | |
7542 | if (sym->ns != gfc_current_ns && sym->attr.codimension) | |
7543 | { | |
c4100eae | 7544 | gfc_error ("Specifying VOLATILE for coarray variable %qs at " |
be59db2d TB |
7545 | "%C, which is use-/host-associated", sym->name); |
7546 | return MATCH_ERROR; | |
7547 | } | |
524af0d6 | 7548 | if (!gfc_add_volatile (&sym->attr, sym->name, &gfc_current_locus)) |
775e6c3a TB |
7549 | return MATCH_ERROR; |
7550 | goto next_item; | |
7551 | ||
7552 | case MATCH_NO: | |
7553 | break; | |
7554 | ||
7555 | case MATCH_ERROR: | |
7556 | return MATCH_ERROR; | |
7557 | } | |
7558 | ||
7559 | next_item: | |
7560 | if (gfc_match_eos () == MATCH_YES) | |
7561 | break; | |
7562 | if (gfc_match_char (',') != MATCH_YES) | |
7563 | goto syntax; | |
7564 | } | |
7565 | ||
7566 | return MATCH_YES; | |
7567 | ||
7568 | syntax: | |
7569 | gfc_error ("Syntax error in VOLATILE statement at %C"); | |
7570 | return MATCH_ERROR; | |
7571 | } | |
7572 | ||
7573 | ||
1eee5628 TB |
7574 | match |
7575 | gfc_match_asynchronous (void) | |
7576 | { | |
7577 | gfc_symbol *sym; | |
7578 | match m; | |
7579 | ||
524af0d6 | 7580 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS statement at %C")) |
1eee5628 TB |
7581 | return MATCH_ERROR; |
7582 | ||
7583 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7584 | { | |
7585 | return MATCH_ERROR; | |
7586 | } | |
7587 | ||
7588 | if (gfc_match_eos () == MATCH_YES) | |
7589 | goto syntax; | |
7590 | ||
7591 | for(;;) | |
7592 | { | |
f5acf0f2 | 7593 | /* ASYNCHRONOUS is special because it can be added to host-associated |
1eee5628 TB |
7594 | symbols locally. */ |
7595 | m = gfc_match_symbol (&sym, 1); | |
7596 | switch (m) | |
7597 | { | |
7598 | case MATCH_YES: | |
524af0d6 | 7599 | if (!gfc_add_asynchronous (&sym->attr, sym->name, &gfc_current_locus)) |
1eee5628 TB |
7600 | return MATCH_ERROR; |
7601 | goto next_item; | |
7602 | ||
7603 | case MATCH_NO: | |
7604 | break; | |
7605 | ||
7606 | case MATCH_ERROR: | |
7607 | return MATCH_ERROR; | |
7608 | } | |
7609 | ||
7610 | next_item: | |
7611 | if (gfc_match_eos () == MATCH_YES) | |
7612 | break; | |
7613 | if (gfc_match_char (',') != MATCH_YES) | |
7614 | goto syntax; | |
7615 | } | |
7616 | ||
7617 | return MATCH_YES; | |
7618 | ||
7619 | syntax: | |
7620 | gfc_error ("Syntax error in ASYNCHRONOUS statement at %C"); | |
7621 | return MATCH_ERROR; | |
7622 | } | |
7623 | ||
7624 | ||
4668d6f9 PT |
7625 | /* Match a module procedure statement in a submodule. */ |
7626 | ||
7627 | match | |
7628 | gfc_match_submod_proc (void) | |
7629 | { | |
7630 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7631 | gfc_symbol *sym, *fsym; | |
7632 | match m; | |
7633 | gfc_formal_arglist *formal, *head, *tail; | |
7634 | ||
7635 | if (gfc_current_state () != COMP_CONTAINS | |
7636 | || !(gfc_state_stack->previous | |
7637 | && gfc_state_stack->previous->state == COMP_SUBMODULE)) | |
7638 | return MATCH_NO; | |
7639 | ||
7640 | m = gfc_match (" module% procedure% %n", name); | |
7641 | if (m != MATCH_YES) | |
7642 | return m; | |
7643 | ||
7644 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE PROCEDURE declaration " | |
7645 | "at %C")) | |
7646 | return MATCH_ERROR; | |
7647 | ||
7648 | if (get_proc_name (name, &sym, false)) | |
7649 | return MATCH_ERROR; | |
7650 | ||
7651 | /* Make sure that the result field is appropriately filled, even though | |
7652 | the result symbol will be replaced later on. */ | |
7653 | if (sym->ts.interface->attr.function) | |
7654 | { | |
7655 | if (sym->ts.interface->result | |
7656 | && sym->ts.interface->result != sym->ts.interface) | |
7657 | sym->result= sym->ts.interface->result; | |
7658 | else | |
7659 | sym->result = sym; | |
7660 | } | |
7661 | ||
7662 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if | |
7663 | the symbol existed before. */ | |
7664 | sym->declared_at = gfc_current_locus; | |
7665 | ||
7666 | if (!sym->attr.module_procedure) | |
7667 | return MATCH_ERROR; | |
7668 | ||
7669 | /* Signal match_end to expect "end procedure". */ | |
7670 | sym->abr_modproc_decl = 1; | |
7671 | ||
7672 | /* Change from IFSRC_IFBODY coming from the interface declaration. */ | |
7673 | sym->attr.if_source = IFSRC_DECL; | |
7674 | ||
7675 | gfc_new_block = sym; | |
7676 | ||
7677 | /* Make a new formal arglist with the symbols in the procedure | |
7678 | namespace. */ | |
7679 | head = tail = NULL; | |
7680 | for (formal = sym->formal; formal && formal->sym; formal = formal->next) | |
7681 | { | |
7682 | if (formal == sym->formal) | |
7683 | head = tail = gfc_get_formal_arglist (); | |
7684 | else | |
7685 | { | |
7686 | tail->next = gfc_get_formal_arglist (); | |
7687 | tail = tail->next; | |
7688 | } | |
7689 | ||
7690 | if (gfc_copy_dummy_sym (&fsym, formal->sym, 0)) | |
7691 | goto cleanup; | |
7692 | ||
7693 | tail->sym = fsym; | |
7694 | gfc_set_sym_referenced (fsym); | |
7695 | } | |
7696 | ||
7697 | /* The dummy symbols get cleaned up, when the formal_namespace of the | |
7698 | interface declaration is cleared. This allows us to add the | |
7699 | explicit interface as is done for other type of procedure. */ | |
7700 | if (!gfc_add_explicit_interface (sym, IFSRC_DECL, head, | |
7701 | &gfc_current_locus)) | |
7702 | return MATCH_ERROR; | |
7703 | ||
7704 | if (gfc_match_eos () != MATCH_YES) | |
7705 | { | |
7706 | gfc_syntax_error (ST_MODULE_PROC); | |
7707 | return MATCH_ERROR; | |
7708 | } | |
7709 | ||
7710 | return MATCH_YES; | |
7711 | ||
7712 | cleanup: | |
7713 | gfc_free_formal_arglist (head); | |
7714 | return MATCH_ERROR; | |
7715 | } | |
7716 | ||
7717 | ||
6de9cd9a DN |
7718 | /* Match a module procedure statement. Note that we have to modify |
7719 | symbols in the parent's namespace because the current one was there | |
49de9e73 | 7720 | to receive symbols that are in an interface's formal argument list. */ |
6de9cd9a DN |
7721 | |
7722 | match | |
7723 | gfc_match_modproc (void) | |
7724 | { | |
7725 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7726 | gfc_symbol *sym; | |
7727 | match m; | |
162b5a21 | 7728 | locus old_locus; |
060fca4a | 7729 | gfc_namespace *module_ns; |
2b77e908 | 7730 | gfc_interface *old_interface_head, *interface; |
6de9cd9a DN |
7731 | |
7732 | if (gfc_state_stack->state != COMP_INTERFACE | |
7733 | || gfc_state_stack->previous == NULL | |
129d15a3 JW |
7734 | || current_interface.type == INTERFACE_NAMELESS |
7735 | || current_interface.type == INTERFACE_ABSTRACT) | |
6de9cd9a | 7736 | { |
636dff67 SK |
7737 | gfc_error ("MODULE PROCEDURE at %C must be in a generic module " |
7738 | "interface"); | |
6de9cd9a DN |
7739 | return MATCH_ERROR; |
7740 | } | |
7741 | ||
060fca4a PT |
7742 | module_ns = gfc_current_ns->parent; |
7743 | for (; module_ns; module_ns = module_ns->parent) | |
43dfd40c SK |
7744 | if (module_ns->proc_name->attr.flavor == FL_MODULE |
7745 | || module_ns->proc_name->attr.flavor == FL_PROGRAM | |
7746 | || (module_ns->proc_name->attr.flavor == FL_PROCEDURE | |
7747 | && !module_ns->proc_name->attr.contained)) | |
060fca4a PT |
7748 | break; |
7749 | ||
7750 | if (module_ns == NULL) | |
7751 | return MATCH_ERROR; | |
7752 | ||
2b77e908 FXC |
7753 | /* Store the current state of the interface. We will need it if we |
7754 | end up with a syntax error and need to recover. */ | |
7755 | old_interface_head = gfc_current_interface_head (); | |
7756 | ||
162b5a21 SK |
7757 | /* Check if the F2008 optional double colon appears. */ |
7758 | gfc_gobble_whitespace (); | |
7759 | old_locus = gfc_current_locus; | |
7760 | if (gfc_match ("::") == MATCH_YES) | |
7761 | { | |
524af0d6 JB |
7762 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
7763 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
162b5a21 SK |
7764 | return MATCH_ERROR; |
7765 | } | |
7766 | else | |
7767 | gfc_current_locus = old_locus; | |
f5acf0f2 | 7768 | |
6de9cd9a DN |
7769 | for (;;) |
7770 | { | |
2b77e908 | 7771 | bool last = false; |
162b5a21 | 7772 | old_locus = gfc_current_locus; |
2b77e908 | 7773 | |
6de9cd9a DN |
7774 | m = gfc_match_name (name); |
7775 | if (m == MATCH_NO) | |
7776 | goto syntax; | |
7777 | if (m != MATCH_YES) | |
7778 | return MATCH_ERROR; | |
7779 | ||
2b77e908 FXC |
7780 | /* Check for syntax error before starting to add symbols to the |
7781 | current namespace. */ | |
7782 | if (gfc_match_eos () == MATCH_YES) | |
7783 | last = true; | |
162b5a21 | 7784 | |
2b77e908 FXC |
7785 | if (!last && gfc_match_char (',') != MATCH_YES) |
7786 | goto syntax; | |
7787 | ||
7788 | /* Now we're sure the syntax is valid, we process this item | |
7789 | further. */ | |
060fca4a | 7790 | if (gfc_get_symbol (name, module_ns, &sym)) |
6de9cd9a DN |
7791 | return MATCH_ERROR; |
7792 | ||
43dfd40c SK |
7793 | if (sym->attr.intrinsic) |
7794 | { | |
7795 | gfc_error ("Intrinsic procedure at %L cannot be a MODULE " | |
7796 | "PROCEDURE", &old_locus); | |
7797 | return MATCH_ERROR; | |
7798 | } | |
7799 | ||
6de9cd9a | 7800 | if (sym->attr.proc != PROC_MODULE |
524af0d6 | 7801 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
6de9cd9a DN |
7802 | return MATCH_ERROR; |
7803 | ||
524af0d6 | 7804 | if (!gfc_add_interface (sym)) |
6de9cd9a DN |
7805 | return MATCH_ERROR; |
7806 | ||
71f77fd7 | 7807 | sym->attr.mod_proc = 1; |
43dfd40c | 7808 | sym->declared_at = old_locus; |
71f77fd7 | 7809 | |
2b77e908 | 7810 | if (last) |
6de9cd9a | 7811 | break; |
6de9cd9a DN |
7812 | } |
7813 | ||
7814 | return MATCH_YES; | |
7815 | ||
7816 | syntax: | |
2b77e908 FXC |
7817 | /* Restore the previous state of the interface. */ |
7818 | interface = gfc_current_interface_head (); | |
7819 | gfc_set_current_interface_head (old_interface_head); | |
7820 | ||
7821 | /* Free the new interfaces. */ | |
7822 | while (interface != old_interface_head) | |
7823 | { | |
7824 | gfc_interface *i = interface->next; | |
cede9502 | 7825 | free (interface); |
2b77e908 FXC |
7826 | interface = i; |
7827 | } | |
7828 | ||
7829 | /* And issue a syntax error. */ | |
6de9cd9a DN |
7830 | gfc_syntax_error (ST_MODULE_PROC); |
7831 | return MATCH_ERROR; | |
7832 | } | |
7833 | ||
7834 | ||
7d1f1e61 | 7835 | /* Check a derived type that is being extended. */ |
42e3d759 | 7836 | |
7d1f1e61 PT |
7837 | static gfc_symbol* |
7838 | check_extended_derived_type (char *name) | |
7839 | { | |
7840 | gfc_symbol *extended; | |
7841 | ||
7842 | if (gfc_find_symbol (name, gfc_current_ns, 1, &extended)) | |
7843 | { | |
7844 | gfc_error ("Ambiguous symbol in TYPE definition at %C"); | |
7845 | return NULL; | |
7846 | } | |
7847 | ||
42e3d759 JW |
7848 | extended = gfc_find_dt_in_generic (extended); |
7849 | ||
7850 | /* F08:C428. */ | |
7d1f1e61 PT |
7851 | if (!extended) |
7852 | { | |
c4100eae | 7853 | gfc_error ("Symbol %qs at %C has not been previously defined", name); |
7d1f1e61 PT |
7854 | return NULL; |
7855 | } | |
7856 | ||
7857 | if (extended->attr.flavor != FL_DERIVED) | |
7858 | { | |
c4100eae | 7859 | gfc_error ("%qs in EXTENDS expression at %C is not a " |
7d1f1e61 PT |
7860 | "derived type", name); |
7861 | return NULL; | |
7862 | } | |
7863 | ||
7864 | if (extended->attr.is_bind_c) | |
7865 | { | |
c4100eae | 7866 | gfc_error ("%qs cannot be extended at %C because it " |
7d1f1e61 PT |
7867 | "is BIND(C)", extended->name); |
7868 | return NULL; | |
7869 | } | |
7870 | ||
7871 | if (extended->attr.sequence) | |
7872 | { | |
c4100eae | 7873 | gfc_error ("%qs cannot be extended at %C because it " |
7d1f1e61 PT |
7874 | "is a SEQUENCE type", extended->name); |
7875 | return NULL; | |
7876 | } | |
7877 | ||
7878 | return extended; | |
7879 | } | |
7880 | ||
7881 | ||
a8b3b0b6 CR |
7882 | /* Match the optional attribute specifiers for a type declaration. |
7883 | Return MATCH_ERROR if an error is encountered in one of the handled | |
7884 | attributes (public, private, bind(c)), MATCH_NO if what's found is | |
7885 | not a handled attribute, and MATCH_YES otherwise. TODO: More error | |
7886 | checking on attribute conflicts needs to be done. */ | |
6de9cd9a DN |
7887 | |
7888 | match | |
7d1f1e61 | 7889 | gfc_get_type_attr_spec (symbol_attribute *attr, char *name) |
6de9cd9a | 7890 | { |
a8b3b0b6 | 7891 | /* See if the derived type is marked as private. */ |
6de9cd9a DN |
7892 | if (gfc_match (" , private") == MATCH_YES) |
7893 | { | |
d51347f9 | 7894 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 7895 | { |
d51347f9 TB |
7896 | gfc_error ("Derived type at %C can only be PRIVATE in the " |
7897 | "specification part of a module"); | |
6de9cd9a DN |
7898 | return MATCH_ERROR; |
7899 | } | |
7900 | ||
524af0d6 | 7901 | if (!gfc_add_access (attr, ACCESS_PRIVATE, NULL, NULL)) |
6de9cd9a | 7902 | return MATCH_ERROR; |
6de9cd9a | 7903 | } |
a8b3b0b6 | 7904 | else if (gfc_match (" , public") == MATCH_YES) |
6de9cd9a | 7905 | { |
d51347f9 | 7906 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 7907 | { |
d51347f9 TB |
7908 | gfc_error ("Derived type at %C can only be PUBLIC in the " |
7909 | "specification part of a module"); | |
6de9cd9a DN |
7910 | return MATCH_ERROR; |
7911 | } | |
7912 | ||
524af0d6 | 7913 | if (!gfc_add_access (attr, ACCESS_PUBLIC, NULL, NULL)) |
6de9cd9a | 7914 | return MATCH_ERROR; |
6de9cd9a | 7915 | } |
52f49934 | 7916 | else if (gfc_match (" , bind ( c )") == MATCH_YES) |
a8b3b0b6 CR |
7917 | { |
7918 | /* If the type is defined to be bind(c) it then needs to make | |
7919 | sure that all fields are interoperable. This will | |
7920 | need to be a semantic check on the finished derived type. | |
7921 | See 15.2.3 (lines 9-12) of F2003 draft. */ | |
524af0d6 | 7922 | if (!gfc_add_is_bind_c (attr, NULL, &gfc_current_locus, 0)) |
a8b3b0b6 CR |
7923 | return MATCH_ERROR; |
7924 | ||
7925 | /* TODO: attr conflicts need to be checked, probably in symbol.c. */ | |
7926 | } | |
52f49934 DK |
7927 | else if (gfc_match (" , abstract") == MATCH_YES) |
7928 | { | |
524af0d6 | 7929 | if (!gfc_notify_std (GFC_STD_F2003, "ABSTRACT type at %C")) |
52f49934 DK |
7930 | return MATCH_ERROR; |
7931 | ||
524af0d6 | 7932 | if (!gfc_add_abstract (attr, &gfc_current_locus)) |
52f49934 DK |
7933 | return MATCH_ERROR; |
7934 | } | |
524af0d6 | 7935 | else if (name && gfc_match (" , extends ( %n )", name) == MATCH_YES) |
7d1f1e61 | 7936 | { |
524af0d6 | 7937 | if (!gfc_add_extension (attr, &gfc_current_locus)) |
7d1f1e61 PT |
7938 | return MATCH_ERROR; |
7939 | } | |
a8b3b0b6 CR |
7940 | else |
7941 | return MATCH_NO; | |
7942 | ||
7943 | /* If we get here, something matched. */ | |
7944 | return MATCH_YES; | |
7945 | } | |
7946 | ||
7947 | ||
7948 | /* Match the beginning of a derived type declaration. If a type name | |
7949 | was the result of a function, then it is possible to have a symbol | |
7950 | already to be known as a derived type yet have no components. */ | |
7951 | ||
7952 | match | |
7953 | gfc_match_derived_decl (void) | |
7954 | { | |
7955 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7d1f1e61 | 7956 | char parent[GFC_MAX_SYMBOL_LEN + 1]; |
a8b3b0b6 | 7957 | symbol_attribute attr; |
c3f34952 | 7958 | gfc_symbol *sym, *gensym; |
7d1f1e61 | 7959 | gfc_symbol *extended; |
a8b3b0b6 CR |
7960 | match m; |
7961 | match is_type_attr_spec = MATCH_NO; | |
e7303e85 | 7962 | bool seen_attr = false; |
c3f34952 | 7963 | gfc_interface *intr = NULL, *head; |
a8b3b0b6 CR |
7964 | |
7965 | if (gfc_current_state () == COMP_DERIVED) | |
7966 | return MATCH_NO; | |
7967 | ||
7d1f1e61 PT |
7968 | name[0] = '\0'; |
7969 | parent[0] = '\0'; | |
a8b3b0b6 | 7970 | gfc_clear_attr (&attr); |
7d1f1e61 | 7971 | extended = NULL; |
a8b3b0b6 CR |
7972 | |
7973 | do | |
7974 | { | |
7d1f1e61 | 7975 | is_type_attr_spec = gfc_get_type_attr_spec (&attr, parent); |
a8b3b0b6 CR |
7976 | if (is_type_attr_spec == MATCH_ERROR) |
7977 | return MATCH_ERROR; | |
e7303e85 FXC |
7978 | if (is_type_attr_spec == MATCH_YES) |
7979 | seen_attr = true; | |
a8b3b0b6 | 7980 | } while (is_type_attr_spec == MATCH_YES); |
6de9cd9a | 7981 | |
63a3341a PT |
7982 | /* Deal with derived type extensions. The extension attribute has |
7983 | been added to 'attr' but now the parent type must be found and | |
7984 | checked. */ | |
7d1f1e61 PT |
7985 | if (parent[0]) |
7986 | extended = check_extended_derived_type (parent); | |
7987 | ||
7988 | if (parent[0] && !extended) | |
7989 | return MATCH_ERROR; | |
7990 | ||
e7303e85 | 7991 | if (gfc_match (" ::") != MATCH_YES && seen_attr) |
6de9cd9a DN |
7992 | { |
7993 | gfc_error ("Expected :: in TYPE definition at %C"); | |
7994 | return MATCH_ERROR; | |
7995 | } | |
7996 | ||
7997 | m = gfc_match (" %n%t", name); | |
7998 | if (m != MATCH_YES) | |
7999 | return m; | |
8000 | ||
e9c06563 TB |
8001 | /* Make sure the name is not the name of an intrinsic type. */ |
8002 | if (gfc_is_intrinsic_typename (name)) | |
6de9cd9a | 8003 | { |
c4100eae | 8004 | gfc_error ("Type name %qs at %C cannot be the same as an intrinsic " |
636dff67 | 8005 | "type", name); |
6de9cd9a DN |
8006 | return MATCH_ERROR; |
8007 | } | |
8008 | ||
c3f34952 | 8009 | if (gfc_get_symbol (name, NULL, &gensym)) |
6de9cd9a DN |
8010 | return MATCH_ERROR; |
8011 | ||
c3f34952 | 8012 | if (!gensym->attr.generic && gensym->ts.type != BT_UNKNOWN) |
6de9cd9a | 8013 | { |
c4100eae | 8014 | gfc_error ("Derived type name %qs at %C already has a basic type " |
c3f34952 TB |
8015 | "of %s", gensym->name, gfc_typename (&gensym->ts)); |
8016 | return MATCH_ERROR; | |
8017 | } | |
8018 | ||
8019 | if (!gensym->attr.generic | |
524af0d6 | 8020 | && !gfc_add_generic (&gensym->attr, gensym->name, NULL)) |
c3f34952 TB |
8021 | return MATCH_ERROR; |
8022 | ||
8023 | if (!gensym->attr.function | |
524af0d6 | 8024 | && !gfc_add_function (&gensym->attr, gensym->name, NULL)) |
c3f34952 TB |
8025 | return MATCH_ERROR; |
8026 | ||
8027 | sym = gfc_find_dt_in_generic (gensym); | |
8028 | ||
8029 | if (sym && (sym->components != NULL || sym->attr.zero_comp)) | |
8030 | { | |
c4100eae | 8031 | gfc_error ("Derived type definition of %qs at %C has already been " |
c3f34952 | 8032 | "defined", sym->name); |
6de9cd9a DN |
8033 | return MATCH_ERROR; |
8034 | } | |
8035 | ||
c3f34952 TB |
8036 | if (!sym) |
8037 | { | |
8038 | /* Use upper case to save the actual derived-type symbol. */ | |
8039 | gfc_get_symbol (gfc_get_string ("%c%s", | |
8040 | (char) TOUPPER ((unsigned char) gensym->name[0]), | |
8041 | &gensym->name[1]), NULL, &sym); | |
8042 | sym->name = gfc_get_string (gensym->name); | |
8043 | head = gensym->generic; | |
8044 | intr = gfc_get_interface (); | |
8045 | intr->sym = sym; | |
8046 | intr->where = gfc_current_locus; | |
8047 | intr->sym->declared_at = gfc_current_locus; | |
8048 | intr->next = head; | |
8049 | gensym->generic = intr; | |
8050 | gensym->attr.if_source = IFSRC_DECL; | |
8051 | } | |
8052 | ||
6de9cd9a DN |
8053 | /* The symbol may already have the derived attribute without the |
8054 | components. The ways this can happen is via a function | |
8055 | definition, an INTRINSIC statement or a subtype in another | |
8056 | derived type that is a pointer. The first part of the AND clause | |
df2fba9e | 8057 | is true if the symbol is not the return value of a function. */ |
6de9cd9a | 8058 | if (sym->attr.flavor != FL_DERIVED |
524af0d6 | 8059 | && !gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL)) |
6de9cd9a DN |
8060 | return MATCH_ERROR; |
8061 | ||
6de9cd9a | 8062 | if (attr.access != ACCESS_UNKNOWN |
524af0d6 | 8063 | && !gfc_add_access (&sym->attr, attr.access, sym->name, NULL)) |
6de9cd9a | 8064 | return MATCH_ERROR; |
c3f34952 TB |
8065 | else if (sym->attr.access == ACCESS_UNKNOWN |
8066 | && gensym->attr.access != ACCESS_UNKNOWN | |
524af0d6 JB |
8067 | && !gfc_add_access (&sym->attr, gensym->attr.access, |
8068 | sym->name, NULL)) | |
c3f34952 TB |
8069 | return MATCH_ERROR; |
8070 | ||
8071 | if (sym->attr.access != ACCESS_UNKNOWN | |
8072 | && gensym->attr.access == ACCESS_UNKNOWN) | |
8073 | gensym->attr.access = sym->attr.access; | |
6de9cd9a | 8074 | |
a8b3b0b6 CR |
8075 | /* See if the derived type was labeled as bind(c). */ |
8076 | if (attr.is_bind_c != 0) | |
8077 | sym->attr.is_bind_c = attr.is_bind_c; | |
8078 | ||
34523524 DK |
8079 | /* Construct the f2k_derived namespace if it is not yet there. */ |
8080 | if (!sym->f2k_derived) | |
8081 | sym->f2k_derived = gfc_get_namespace (NULL, 0); | |
f5acf0f2 | 8082 | |
7d1f1e61 PT |
8083 | if (extended && !sym->components) |
8084 | { | |
8085 | gfc_component *p; | |
7d1f1e61 PT |
8086 | |
8087 | /* Add the extended derived type as the first component. */ | |
8088 | gfc_add_component (sym, parent, &p); | |
7d1f1e61 PT |
8089 | extended->refs++; |
8090 | gfc_set_sym_referenced (extended); | |
8091 | ||
8092 | p->ts.type = BT_DERIVED; | |
bc21d315 | 8093 | p->ts.u.derived = extended; |
7d1f1e61 | 8094 | p->initializer = gfc_default_initializer (&p->ts); |
f5acf0f2 | 8095 | |
7c1dab0d JW |
8096 | /* Set extension level. */ |
8097 | if (extended->attr.extension == 255) | |
8098 | { | |
8099 | /* Since the extension field is 8 bit wide, we can only have | |
8100 | up to 255 extension levels. */ | |
c4100eae | 8101 | gfc_error ("Maximum extension level reached with type %qs at %L", |
7c1dab0d JW |
8102 | extended->name, &extended->declared_at); |
8103 | return MATCH_ERROR; | |
8104 | } | |
8105 | sym->attr.extension = extended->attr.extension + 1; | |
7d1f1e61 PT |
8106 | |
8107 | /* Provide the links between the extended type and its extension. */ | |
8108 | if (!extended->f2k_derived) | |
8109 | extended->f2k_derived = gfc_get_namespace (NULL, 0); | |
7d1f1e61 PT |
8110 | } |
8111 | ||
7c1dab0d JW |
8112 | if (!sym->hash_value) |
8113 | /* Set the hash for the compound name for this type. */ | |
4fa02692 | 8114 | sym->hash_value = gfc_hash_value (sym); |
cf2b3c22 | 8115 | |
52f49934 DK |
8116 | /* Take over the ABSTRACT attribute. */ |
8117 | sym->attr.abstract = attr.abstract; | |
8118 | ||
6de9cd9a DN |
8119 | gfc_new_block = sym; |
8120 | ||
8121 | return MATCH_YES; | |
8122 | } | |
83d890b9 AL |
8123 | |
8124 | ||
f5acf0f2 | 8125 | /* Cray Pointees can be declared as: |
b3aefde2 | 8126 | pointer (ipt, a (n,m,...,*)) */ |
83d890b9 | 8127 | |
32e8bb8e | 8128 | match |
83d890b9 AL |
8129 | gfc_mod_pointee_as (gfc_array_spec *as) |
8130 | { | |
8131 | as->cray_pointee = true; /* This will be useful to know later. */ | |
8132 | if (as->type == AS_ASSUMED_SIZE) | |
b3aefde2 | 8133 | as->cp_was_assumed = true; |
83d890b9 AL |
8134 | else if (as->type == AS_ASSUMED_SHAPE) |
8135 | { | |
8136 | gfc_error ("Cray Pointee at %C cannot be assumed shape array"); | |
8137 | return MATCH_ERROR; | |
8138 | } | |
8139 | return MATCH_YES; | |
8140 | } | |
25d8f0a2 TS |
8141 | |
8142 | ||
f5acf0f2 PT |
8143 | /* Match the enum definition statement, here we are trying to match |
8144 | the first line of enum definition statement. | |
25d8f0a2 TS |
8145 | Returns MATCH_YES if match is found. */ |
8146 | ||
8147 | match | |
8148 | gfc_match_enum (void) | |
8149 | { | |
8150 | match m; | |
f5acf0f2 | 8151 | |
25d8f0a2 TS |
8152 | m = gfc_match_eos (); |
8153 | if (m != MATCH_YES) | |
8154 | return m; | |
8155 | ||
524af0d6 | 8156 | if (!gfc_notify_std (GFC_STD_F2003, "ENUM and ENUMERATOR at %C")) |
25d8f0a2 TS |
8157 | return MATCH_ERROR; |
8158 | ||
8159 | return MATCH_YES; | |
8160 | } | |
8161 | ||
8162 | ||
31224396 SK |
8163 | /* Returns an initializer whose value is one higher than the value of the |
8164 | LAST_INITIALIZER argument. If the argument is NULL, the | |
8165 | initializers value will be set to zero. The initializer's kind | |
8166 | will be set to gfc_c_int_kind. | |
8167 | ||
8168 | If -fshort-enums is given, the appropriate kind will be selected | |
8169 | later after all enumerators have been parsed. A warning is issued | |
8170 | here if an initializer exceeds gfc_c_int_kind. */ | |
8171 | ||
8172 | static gfc_expr * | |
8173 | enum_initializer (gfc_expr *last_initializer, locus where) | |
8174 | { | |
8175 | gfc_expr *result; | |
b7e75771 | 8176 | result = gfc_get_constant_expr (BT_INTEGER, gfc_c_int_kind, &where); |
31224396 SK |
8177 | |
8178 | mpz_init (result->value.integer); | |
8179 | ||
8180 | if (last_initializer != NULL) | |
8181 | { | |
8182 | mpz_add_ui (result->value.integer, last_initializer->value.integer, 1); | |
8183 | result->where = last_initializer->where; | |
8184 | ||
8185 | if (gfc_check_integer_range (result->value.integer, | |
8186 | gfc_c_int_kind) != ARITH_OK) | |
8187 | { | |
8188 | gfc_error ("Enumerator exceeds the C integer type at %C"); | |
8189 | return NULL; | |
8190 | } | |
8191 | } | |
8192 | else | |
8193 | { | |
8194 | /* Control comes here, if it's the very first enumerator and no | |
8195 | initializer has been given. It will be initialized to zero. */ | |
8196 | mpz_set_si (result->value.integer, 0); | |
8197 | } | |
8198 | ||
8199 | return result; | |
8200 | } | |
8201 | ||
8202 | ||
6133c68a TS |
8203 | /* Match a variable name with an optional initializer. When this |
8204 | subroutine is called, a variable is expected to be parsed next. | |
8205 | Depending on what is happening at the moment, updates either the | |
8206 | symbol table or the current interface. */ | |
8207 | ||
8208 | static match | |
8209 | enumerator_decl (void) | |
8210 | { | |
8211 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8212 | gfc_expr *initializer; | |
8213 | gfc_array_spec *as = NULL; | |
8214 | gfc_symbol *sym; | |
8215 | locus var_locus; | |
8216 | match m; | |
524af0d6 | 8217 | bool t; |
6133c68a TS |
8218 | locus old_locus; |
8219 | ||
8220 | initializer = NULL; | |
8221 | old_locus = gfc_current_locus; | |
8222 | ||
8223 | /* When we get here, we've just matched a list of attributes and | |
8224 | maybe a type and a double colon. The next thing we expect to see | |
8225 | is the name of the symbol. */ | |
8226 | m = gfc_match_name (name); | |
8227 | if (m != MATCH_YES) | |
8228 | goto cleanup; | |
8229 | ||
8230 | var_locus = gfc_current_locus; | |
8231 | ||
8232 | /* OK, we've successfully matched the declaration. Now put the | |
8233 | symbol in the current namespace. If we fail to create the symbol, | |
8234 | bail out. */ | |
524af0d6 | 8235 | if (!build_sym (name, NULL, false, &as, &var_locus)) |
6133c68a TS |
8236 | { |
8237 | m = MATCH_ERROR; | |
8238 | goto cleanup; | |
8239 | } | |
8240 | ||
8241 | /* The double colon must be present in order to have initializers. | |
8242 | Otherwise the statement is ambiguous with an assignment statement. */ | |
8243 | if (colon_seen) | |
8244 | { | |
8245 | if (gfc_match_char ('=') == MATCH_YES) | |
8246 | { | |
8247 | m = gfc_match_init_expr (&initializer); | |
8248 | if (m == MATCH_NO) | |
8249 | { | |
8250 | gfc_error ("Expected an initialization expression at %C"); | |
8251 | m = MATCH_ERROR; | |
8252 | } | |
8253 | ||
8254 | if (m != MATCH_YES) | |
8255 | goto cleanup; | |
8256 | } | |
8257 | } | |
8258 | ||
8259 | /* If we do not have an initializer, the initialization value of the | |
8260 | previous enumerator (stored in last_initializer) is incremented | |
8261 | by 1 and is used to initialize the current enumerator. */ | |
8262 | if (initializer == NULL) | |
31224396 | 8263 | initializer = enum_initializer (last_initializer, old_locus); |
d51347f9 | 8264 | |
6133c68a TS |
8265 | if (initializer == NULL || initializer->ts.type != BT_INTEGER) |
8266 | { | |
01e64c3d JJ |
8267 | gfc_error ("ENUMERATOR %L not initialized with integer expression", |
8268 | &var_locus); | |
d51347f9 | 8269 | m = MATCH_ERROR; |
6133c68a TS |
8270 | goto cleanup; |
8271 | } | |
8272 | ||
8273 | /* Store this current initializer, for the next enumerator variable | |
8274 | to be parsed. add_init_expr_to_sym() zeros initializer, so we | |
8275 | use last_initializer below. */ | |
8276 | last_initializer = initializer; | |
8277 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
8278 | ||
8279 | /* Maintain enumerator history. */ | |
8280 | gfc_find_symbol (name, NULL, 0, &sym); | |
8281 | create_enum_history (sym, last_initializer); | |
8282 | ||
524af0d6 | 8283 | return (t) ? MATCH_YES : MATCH_ERROR; |
6133c68a TS |
8284 | |
8285 | cleanup: | |
8286 | /* Free stuff up and return. */ | |
8287 | gfc_free_expr (initializer); | |
8288 | ||
8289 | return m; | |
8290 | } | |
8291 | ||
8292 | ||
66e4ab31 | 8293 | /* Match the enumerator definition statement. */ |
25d8f0a2 TS |
8294 | |
8295 | match | |
8296 | gfc_match_enumerator_def (void) | |
8297 | { | |
8298 | match m; | |
524af0d6 | 8299 | bool t; |
d51347f9 | 8300 | |
25d8f0a2 | 8301 | gfc_clear_ts (¤t_ts); |
d51347f9 | 8302 | |
25d8f0a2 TS |
8303 | m = gfc_match (" enumerator"); |
8304 | if (m != MATCH_YES) | |
8305 | return m; | |
6133c68a TS |
8306 | |
8307 | m = gfc_match (" :: "); | |
8308 | if (m == MATCH_ERROR) | |
8309 | return m; | |
8310 | ||
8311 | colon_seen = (m == MATCH_YES); | |
d51347f9 | 8312 | |
25d8f0a2 TS |
8313 | if (gfc_current_state () != COMP_ENUM) |
8314 | { | |
8315 | gfc_error ("ENUM definition statement expected before %C"); | |
8316 | gfc_free_enum_history (); | |
8317 | return MATCH_ERROR; | |
8318 | } | |
8319 | ||
8320 | (¤t_ts)->type = BT_INTEGER; | |
8321 | (¤t_ts)->kind = gfc_c_int_kind; | |
d51347f9 | 8322 | |
6133c68a TS |
8323 | gfc_clear_attr (¤t_attr); |
8324 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, NULL); | |
524af0d6 | 8325 | if (!t) |
25d8f0a2 | 8326 | { |
6133c68a | 8327 | m = MATCH_ERROR; |
25d8f0a2 TS |
8328 | goto cleanup; |
8329 | } | |
8330 | ||
25d8f0a2 TS |
8331 | for (;;) |
8332 | { | |
6133c68a | 8333 | m = enumerator_decl (); |
25d8f0a2 | 8334 | if (m == MATCH_ERROR) |
01e64c3d JJ |
8335 | { |
8336 | gfc_free_enum_history (); | |
8337 | goto cleanup; | |
8338 | } | |
25d8f0a2 TS |
8339 | if (m == MATCH_NO) |
8340 | break; | |
8341 | ||
8342 | if (gfc_match_eos () == MATCH_YES) | |
8343 | goto cleanup; | |
8344 | if (gfc_match_char (',') != MATCH_YES) | |
8345 | break; | |
8346 | } | |
8347 | ||
8348 | if (gfc_current_state () == COMP_ENUM) | |
8349 | { | |
8350 | gfc_free_enum_history (); | |
8351 | gfc_error ("Syntax error in ENUMERATOR definition at %C"); | |
8352 | m = MATCH_ERROR; | |
8353 | } | |
8354 | ||
8355 | cleanup: | |
8356 | gfc_free_array_spec (current_as); | |
8357 | current_as = NULL; | |
8358 | return m; | |
8359 | ||
8360 | } | |
8361 | ||
f6fad28e | 8362 | |
30b608eb DK |
8363 | /* Match binding attributes. */ |
8364 | ||
8365 | static match | |
713485cc | 8366 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc) |
30b608eb DK |
8367 | { |
8368 | bool found_passing = false; | |
713485cc | 8369 | bool seen_ptr = false; |
90661f26 | 8370 | match m = MATCH_YES; |
30b608eb | 8371 | |
eea58adb | 8372 | /* Initialize to defaults. Do so even before the MATCH_NO check so that in |
30b608eb DK |
8373 | this case the defaults are in there. */ |
8374 | ba->access = ACCESS_UNKNOWN; | |
8375 | ba->pass_arg = NULL; | |
8376 | ba->pass_arg_num = 0; | |
8377 | ba->nopass = 0; | |
8378 | ba->non_overridable = 0; | |
b0e5fa94 | 8379 | ba->deferred = 0; |
90661f26 | 8380 | ba->ppc = ppc; |
30b608eb DK |
8381 | |
8382 | /* If we find a comma, we believe there are binding attributes. */ | |
90661f26 JW |
8383 | m = gfc_match_char (','); |
8384 | if (m == MATCH_NO) | |
8385 | goto done; | |
30b608eb DK |
8386 | |
8387 | do | |
8388 | { | |
e157f736 DK |
8389 | /* Access specifier. */ |
8390 | ||
8391 | m = gfc_match (" public"); | |
30b608eb DK |
8392 | if (m == MATCH_ERROR) |
8393 | goto error; | |
8394 | if (m == MATCH_YES) | |
8395 | { | |
e157f736 | 8396 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 8397 | { |
e157f736 | 8398 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
8399 | goto error; |
8400 | } | |
8401 | ||
e157f736 | 8402 | ba->access = ACCESS_PUBLIC; |
30b608eb DK |
8403 | continue; |
8404 | } | |
8405 | ||
e157f736 | 8406 | m = gfc_match (" private"); |
30b608eb DK |
8407 | if (m == MATCH_ERROR) |
8408 | goto error; | |
8409 | if (m == MATCH_YES) | |
8410 | { | |
e157f736 | 8411 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 8412 | { |
e157f736 | 8413 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
8414 | goto error; |
8415 | } | |
8416 | ||
e157f736 | 8417 | ba->access = ACCESS_PRIVATE; |
30b608eb DK |
8418 | continue; |
8419 | } | |
8420 | ||
e157f736 DK |
8421 | /* If inside GENERIC, the following is not allowed. */ |
8422 | if (!generic) | |
30b608eb | 8423 | { |
30b608eb | 8424 | |
e157f736 DK |
8425 | /* NOPASS flag. */ |
8426 | m = gfc_match (" nopass"); | |
8427 | if (m == MATCH_ERROR) | |
8428 | goto error; | |
8429 | if (m == MATCH_YES) | |
30b608eb | 8430 | { |
e157f736 DK |
8431 | if (found_passing) |
8432 | { | |
8433 | gfc_error ("Binding attributes already specify passing," | |
8434 | " illegal NOPASS at %C"); | |
8435 | goto error; | |
8436 | } | |
8437 | ||
8438 | found_passing = true; | |
8439 | ba->nopass = 1; | |
8440 | continue; | |
30b608eb DK |
8441 | } |
8442 | ||
e157f736 DK |
8443 | /* PASS possibly including argument. */ |
8444 | m = gfc_match (" pass"); | |
8445 | if (m == MATCH_ERROR) | |
8446 | goto error; | |
8447 | if (m == MATCH_YES) | |
30b608eb | 8448 | { |
e157f736 DK |
8449 | char arg[GFC_MAX_SYMBOL_LEN + 1]; |
8450 | ||
8451 | if (found_passing) | |
8452 | { | |
8453 | gfc_error ("Binding attributes already specify passing," | |
8454 | " illegal PASS at %C"); | |
8455 | goto error; | |
8456 | } | |
8457 | ||
8458 | m = gfc_match (" ( %n )", arg); | |
8459 | if (m == MATCH_ERROR) | |
8460 | goto error; | |
8461 | if (m == MATCH_YES) | |
90661f26 | 8462 | ba->pass_arg = gfc_get_string (arg); |
e157f736 DK |
8463 | gcc_assert ((m == MATCH_YES) == (ba->pass_arg != NULL)); |
8464 | ||
8465 | found_passing = true; | |
8466 | ba->nopass = 0; | |
8467 | continue; | |
30b608eb DK |
8468 | } |
8469 | ||
713485cc JW |
8470 | if (ppc) |
8471 | { | |
8472 | /* POINTER flag. */ | |
8473 | m = gfc_match (" pointer"); | |
8474 | if (m == MATCH_ERROR) | |
8475 | goto error; | |
8476 | if (m == MATCH_YES) | |
8477 | { | |
8478 | if (seen_ptr) | |
8479 | { | |
8480 | gfc_error ("Duplicate POINTER attribute at %C"); | |
8481 | goto error; | |
8482 | } | |
8483 | ||
8484 | seen_ptr = true; | |
713485cc JW |
8485 | continue; |
8486 | } | |
8487 | } | |
8488 | else | |
8489 | { | |
8490 | /* NON_OVERRIDABLE flag. */ | |
8491 | m = gfc_match (" non_overridable"); | |
8492 | if (m == MATCH_ERROR) | |
8493 | goto error; | |
8494 | if (m == MATCH_YES) | |
8495 | { | |
8496 | if (ba->non_overridable) | |
8497 | { | |
8498 | gfc_error ("Duplicate NON_OVERRIDABLE at %C"); | |
8499 | goto error; | |
8500 | } | |
8501 | ||
8502 | ba->non_overridable = 1; | |
8503 | continue; | |
8504 | } | |
8505 | ||
8506 | /* DEFERRED flag. */ | |
8507 | m = gfc_match (" deferred"); | |
8508 | if (m == MATCH_ERROR) | |
8509 | goto error; | |
8510 | if (m == MATCH_YES) | |
8511 | { | |
8512 | if (ba->deferred) | |
8513 | { | |
8514 | gfc_error ("Duplicate DEFERRED at %C"); | |
8515 | goto error; | |
8516 | } | |
8517 | ||
8518 | ba->deferred = 1; | |
8519 | continue; | |
8520 | } | |
8521 | } | |
8522 | ||
30b608eb DK |
8523 | } |
8524 | ||
8525 | /* Nothing matching found. */ | |
e157f736 DK |
8526 | if (generic) |
8527 | gfc_error ("Expected access-specifier at %C"); | |
8528 | else | |
8529 | gfc_error ("Expected binding attribute at %C"); | |
30b608eb DK |
8530 | goto error; |
8531 | } | |
8532 | while (gfc_match_char (',') == MATCH_YES); | |
8533 | ||
b0e5fa94 DK |
8534 | /* NON_OVERRIDABLE and DEFERRED exclude themselves. */ |
8535 | if (ba->non_overridable && ba->deferred) | |
8536 | { | |
8537 | gfc_error ("NON_OVERRIDABLE and DEFERRED can't both appear at %C"); | |
8538 | goto error; | |
8539 | } | |
8540 | ||
90661f26 JW |
8541 | m = MATCH_YES; |
8542 | ||
8543 | done: | |
e157f736 DK |
8544 | if (ba->access == ACCESS_UNKNOWN) |
8545 | ba->access = gfc_typebound_default_access; | |
8546 | ||
713485cc JW |
8547 | if (ppc && !seen_ptr) |
8548 | { | |
8549 | gfc_error ("POINTER attribute is required for procedure pointer component" | |
8550 | " at %C"); | |
8551 | goto error; | |
8552 | } | |
8553 | ||
90661f26 | 8554 | return m; |
30b608eb DK |
8555 | |
8556 | error: | |
30b608eb DK |
8557 | return MATCH_ERROR; |
8558 | } | |
8559 | ||
8560 | ||
8561 | /* Match a PROCEDURE specific binding inside a derived type. */ | |
8562 | ||
8563 | static match | |
8564 | match_procedure_in_type (void) | |
8565 | { | |
8566 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8567 | char target_buf[GFC_MAX_SYMBOL_LEN + 1]; | |
1be17993 | 8568 | char* target = NULL, *ifc = NULL; |
3e15518b | 8569 | gfc_typebound_proc tb; |
30b608eb DK |
8570 | bool seen_colons; |
8571 | bool seen_attrs; | |
8572 | match m; | |
8573 | gfc_symtree* stree; | |
8574 | gfc_namespace* ns; | |
8575 | gfc_symbol* block; | |
1be17993 | 8576 | int num; |
30b608eb DK |
8577 | |
8578 | /* Check current state. */ | |
8579 | gcc_assert (gfc_state_stack->state == COMP_DERIVED_CONTAINS); | |
8580 | block = gfc_state_stack->previous->sym; | |
8581 | gcc_assert (block); | |
8582 | ||
b0e5fa94 | 8583 | /* Try to match PROCEDURE(interface). */ |
30b608eb DK |
8584 | if (gfc_match (" (") == MATCH_YES) |
8585 | { | |
b0e5fa94 DK |
8586 | m = gfc_match_name (target_buf); |
8587 | if (m == MATCH_ERROR) | |
8588 | return m; | |
8589 | if (m != MATCH_YES) | |
8590 | { | |
a4d9b221 | 8591 | gfc_error ("Interface-name expected after %<(%> at %C"); |
b0e5fa94 DK |
8592 | return MATCH_ERROR; |
8593 | } | |
8594 | ||
8595 | if (gfc_match (" )") != MATCH_YES) | |
8596 | { | |
a4d9b221 | 8597 | gfc_error ("%<)%> expected at %C"); |
b0e5fa94 DK |
8598 | return MATCH_ERROR; |
8599 | } | |
8600 | ||
1be17993 | 8601 | ifc = target_buf; |
30b608eb DK |
8602 | } |
8603 | ||
8604 | /* Construct the data structure. */ | |
ff5b6492 | 8605 | memset (&tb, 0, sizeof (tb)); |
3e15518b | 8606 | tb.where = gfc_current_locus; |
30b608eb DK |
8607 | |
8608 | /* Match binding attributes. */ | |
3e15518b | 8609 | m = match_binding_attributes (&tb, false, false); |
30b608eb DK |
8610 | if (m == MATCH_ERROR) |
8611 | return m; | |
8612 | seen_attrs = (m == MATCH_YES); | |
8613 | ||
1be17993 | 8614 | /* Check that attribute DEFERRED is given if an interface is specified. */ |
3e15518b | 8615 | if (tb.deferred && !ifc) |
b0e5fa94 DK |
8616 | { |
8617 | gfc_error ("Interface must be specified for DEFERRED binding at %C"); | |
8618 | return MATCH_ERROR; | |
8619 | } | |
3e15518b | 8620 | if (ifc && !tb.deferred) |
b0e5fa94 DK |
8621 | { |
8622 | gfc_error ("PROCEDURE(interface) at %C should be declared DEFERRED"); | |
8623 | return MATCH_ERROR; | |
8624 | } | |
8625 | ||
30b608eb DK |
8626 | /* Match the colons. */ |
8627 | m = gfc_match (" ::"); | |
8628 | if (m == MATCH_ERROR) | |
8629 | return m; | |
8630 | seen_colons = (m == MATCH_YES); | |
8631 | if (seen_attrs && !seen_colons) | |
8632 | { | |
a4d9b221 | 8633 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
30b608eb DK |
8634 | return MATCH_ERROR; |
8635 | } | |
8636 | ||
f5acf0f2 | 8637 | /* Match the binding names. */ |
1be17993 | 8638 | for(num=1;;num++) |
30b608eb | 8639 | { |
1be17993 JW |
8640 | m = gfc_match_name (name); |
8641 | if (m == MATCH_ERROR) | |
8642 | return m; | |
8643 | if (m == MATCH_NO) | |
b0e5fa94 | 8644 | { |
1be17993 | 8645 | gfc_error ("Expected binding name at %C"); |
b0e5fa94 DK |
8646 | return MATCH_ERROR; |
8647 | } | |
8648 | ||
524af0d6 | 8649 | if (num>1 && !gfc_notify_std (GFC_STD_F2008, "PROCEDURE list at %C")) |
1be17993 | 8650 | return MATCH_ERROR; |
30b608eb | 8651 | |
1be17993 JW |
8652 | /* Try to match the '=> target', if it's there. */ |
8653 | target = ifc; | |
8654 | m = gfc_match (" =>"); | |
30b608eb DK |
8655 | if (m == MATCH_ERROR) |
8656 | return m; | |
1be17993 | 8657 | if (m == MATCH_YES) |
30b608eb | 8658 | { |
3e15518b | 8659 | if (tb.deferred) |
1be17993 | 8660 | { |
a4d9b221 | 8661 | gfc_error ("%<=> target%> is invalid for DEFERRED binding at %C"); |
1be17993 JW |
8662 | return MATCH_ERROR; |
8663 | } | |
8664 | ||
8665 | if (!seen_colons) | |
8666 | { | |
a4d9b221 | 8667 | gfc_error ("%<::%> needed in PROCEDURE binding with explicit target" |
1be17993 JW |
8668 | " at %C"); |
8669 | return MATCH_ERROR; | |
8670 | } | |
8671 | ||
8672 | m = gfc_match_name (target_buf); | |
8673 | if (m == MATCH_ERROR) | |
8674 | return m; | |
8675 | if (m == MATCH_NO) | |
8676 | { | |
a4d9b221 | 8677 | gfc_error ("Expected binding target after %<=>%> at %C"); |
1be17993 JW |
8678 | return MATCH_ERROR; |
8679 | } | |
8680 | target = target_buf; | |
30b608eb | 8681 | } |
30b608eb | 8682 | |
1be17993 JW |
8683 | /* If no target was found, it has the same name as the binding. */ |
8684 | if (!target) | |
8685 | target = name; | |
30b608eb | 8686 | |
1be17993 JW |
8687 | /* Get the namespace to insert the symbols into. */ |
8688 | ns = block->f2k_derived; | |
8689 | gcc_assert (ns); | |
30b608eb | 8690 | |
1be17993 | 8691 | /* If the binding is DEFERRED, check that the containing type is ABSTRACT. */ |
3e15518b | 8692 | if (tb.deferred && !block->attr.abstract) |
1be17993 | 8693 | { |
c4100eae | 8694 | gfc_error ("Type %qs containing DEFERRED binding at %C " |
1be17993 JW |
8695 | "is not ABSTRACT", block->name); |
8696 | return MATCH_ERROR; | |
8697 | } | |
30b608eb | 8698 | |
1be17993 | 8699 | /* See if we already have a binding with this name in the symtree which |
6bd2c800 | 8700 | would be an error. If a GENERIC already targeted this binding, it may |
1be17993 JW |
8701 | be already there but then typebound is still NULL. */ |
8702 | stree = gfc_find_symtree (ns->tb_sym_root, name); | |
9f23af48 | 8703 | if (stree && stree->n.tb) |
1be17993 | 8704 | { |
c4100eae MLI |
8705 | gfc_error ("There is already a procedure with binding name %qs for " |
8706 | "the derived type %qs at %C", name, block->name); | |
1be17993 JW |
8707 | return MATCH_ERROR; |
8708 | } | |
b0e5fa94 | 8709 | |
1be17993 | 8710 | /* Insert it and set attributes. */ |
30b608eb | 8711 | |
9f23af48 MM |
8712 | if (!stree) |
8713 | { | |
8714 | stree = gfc_new_symtree (&ns->tb_sym_root, name); | |
8715 | gcc_assert (stree); | |
8716 | } | |
3e15518b | 8717 | stree->n.tb = gfc_get_typebound_proc (&tb); |
e34ccb4c | 8718 | |
3e15518b JW |
8719 | if (gfc_get_sym_tree (target, gfc_current_ns, &stree->n.tb->u.specific, |
8720 | false)) | |
1be17993 | 8721 | return MATCH_ERROR; |
3e15518b | 8722 | gfc_set_sym_referenced (stree->n.tb->u.specific->n.sym); |
f5acf0f2 | 8723 | |
1be17993 JW |
8724 | if (gfc_match_eos () == MATCH_YES) |
8725 | return MATCH_YES; | |
8726 | if (gfc_match_char (',') != MATCH_YES) | |
8727 | goto syntax; | |
e34ccb4c | 8728 | } |
30b608eb | 8729 | |
1be17993 JW |
8730 | syntax: |
8731 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
8732 | return MATCH_ERROR; | |
30b608eb DK |
8733 | } |
8734 | ||
8735 | ||
e157f736 DK |
8736 | /* Match a GENERIC procedure binding inside a derived type. */ |
8737 | ||
8738 | match | |
8739 | gfc_match_generic (void) | |
8740 | { | |
8741 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
94747289 | 8742 | char bind_name[GFC_MAX_SYMBOL_LEN + 16]; /* Allow space for OPERATOR(...). */ |
e157f736 DK |
8743 | gfc_symbol* block; |
8744 | gfc_typebound_proc tbattr; /* Used for match_binding_attributes. */ | |
8745 | gfc_typebound_proc* tb; | |
e157f736 | 8746 | gfc_namespace* ns; |
94747289 DK |
8747 | interface_type op_type; |
8748 | gfc_intrinsic_op op; | |
e157f736 DK |
8749 | match m; |
8750 | ||
8751 | /* Check current state. */ | |
8752 | if (gfc_current_state () == COMP_DERIVED) | |
8753 | { | |
8754 | gfc_error ("GENERIC at %C must be inside a derived-type CONTAINS"); | |
8755 | return MATCH_ERROR; | |
8756 | } | |
8757 | if (gfc_current_state () != COMP_DERIVED_CONTAINS) | |
8758 | return MATCH_NO; | |
8759 | block = gfc_state_stack->previous->sym; | |
8760 | ns = block->f2k_derived; | |
8761 | gcc_assert (block && ns); | |
8762 | ||
ff5b6492 MM |
8763 | memset (&tbattr, 0, sizeof (tbattr)); |
8764 | tbattr.where = gfc_current_locus; | |
8765 | ||
e157f736 | 8766 | /* See if we get an access-specifier. */ |
713485cc | 8767 | m = match_binding_attributes (&tbattr, true, false); |
e157f736 DK |
8768 | if (m == MATCH_ERROR) |
8769 | goto error; | |
8770 | ||
8771 | /* Now the colons, those are required. */ | |
8772 | if (gfc_match (" ::") != MATCH_YES) | |
8773 | { | |
a4d9b221 | 8774 | gfc_error ("Expected %<::%> at %C"); |
e157f736 DK |
8775 | goto error; |
8776 | } | |
8777 | ||
94747289 DK |
8778 | /* Match the binding name; depending on type (operator / generic) format |
8779 | it for future error messages into bind_name. */ | |
f5acf0f2 | 8780 | |
94747289 | 8781 | m = gfc_match_generic_spec (&op_type, name, &op); |
e157f736 DK |
8782 | if (m == MATCH_ERROR) |
8783 | return MATCH_ERROR; | |
8784 | if (m == MATCH_NO) | |
8785 | { | |
94747289 | 8786 | gfc_error ("Expected generic name or operator descriptor at %C"); |
e157f736 DK |
8787 | goto error; |
8788 | } | |
8789 | ||
94747289 | 8790 | switch (op_type) |
e157f736 | 8791 | { |
94747289 DK |
8792 | case INTERFACE_GENERIC: |
8793 | snprintf (bind_name, sizeof (bind_name), "%s", name); | |
8794 | break; | |
f5acf0f2 | 8795 | |
94747289 DK |
8796 | case INTERFACE_USER_OP: |
8797 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(.%s.)", name); | |
8798 | break; | |
f5acf0f2 | 8799 | |
94747289 DK |
8800 | case INTERFACE_INTRINSIC_OP: |
8801 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(%s)", | |
8802 | gfc_op2string (op)); | |
8803 | break; | |
8804 | ||
377e37c1 SK |
8805 | case INTERFACE_NAMELESS: |
8806 | gfc_error ("Malformed GENERIC statement at %C"); | |
8807 | goto error; | |
8808 | break; | |
8809 | ||
94747289 DK |
8810 | default: |
8811 | gcc_unreachable (); | |
8812 | } | |
e34ccb4c | 8813 | |
94747289 DK |
8814 | /* Match the required =>. */ |
8815 | if (gfc_match (" =>") != MATCH_YES) | |
8816 | { | |
a4d9b221 | 8817 | gfc_error ("Expected %<=>%> at %C"); |
94747289 DK |
8818 | goto error; |
8819 | } | |
f5acf0f2 | 8820 | |
94747289 DK |
8821 | /* Try to find existing GENERIC binding with this name / for this operator; |
8822 | if there is something, check that it is another GENERIC and then extend | |
8823 | it rather than building a new node. Otherwise, create it and put it | |
8824 | at the right position. */ | |
8825 | ||
8826 | switch (op_type) | |
8827 | { | |
8828 | case INTERFACE_USER_OP: | |
8829 | case INTERFACE_GENERIC: | |
8830 | { | |
8831 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
8832 | gfc_symtree* st; | |
8833 | ||
8834 | st = gfc_find_symtree (is_op ? ns->tb_uop_root : ns->tb_sym_root, name); | |
8835 | if (st) | |
8836 | { | |
8837 | tb = st->n.tb; | |
8838 | gcc_assert (tb); | |
8839 | } | |
8840 | else | |
8841 | tb = NULL; | |
8842 | ||
8843 | break; | |
8844 | } | |
8845 | ||
8846 | case INTERFACE_INTRINSIC_OP: | |
8847 | tb = ns->tb_op[op]; | |
8848 | break; | |
8849 | ||
8850 | default: | |
8851 | gcc_unreachable (); | |
8852 | } | |
8853 | ||
8854 | if (tb) | |
8855 | { | |
e34ccb4c | 8856 | if (!tb->is_generic) |
e157f736 | 8857 | { |
94747289 | 8858 | gcc_assert (op_type == INTERFACE_GENERIC); |
e157f736 | 8859 | gfc_error ("There's already a non-generic procedure with binding name" |
c4100eae | 8860 | " %qs for the derived type %qs at %C", |
94747289 | 8861 | bind_name, block->name); |
e157f736 DK |
8862 | goto error; |
8863 | } | |
8864 | ||
e157f736 DK |
8865 | if (tb->access != tbattr.access) |
8866 | { | |
8867 | gfc_error ("Binding at %C must have the same access as already" | |
c4100eae | 8868 | " defined binding %qs", bind_name); |
e157f736 DK |
8869 | goto error; |
8870 | } | |
8871 | } | |
8872 | else | |
8873 | { | |
3e15518b | 8874 | tb = gfc_get_typebound_proc (NULL); |
e157f736 DK |
8875 | tb->where = gfc_current_locus; |
8876 | tb->access = tbattr.access; | |
8877 | tb->is_generic = 1; | |
8878 | tb->u.generic = NULL; | |
94747289 DK |
8879 | |
8880 | switch (op_type) | |
8881 | { | |
8882 | case INTERFACE_GENERIC: | |
8883 | case INTERFACE_USER_OP: | |
8884 | { | |
8885 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
8886 | gfc_symtree* st; | |
8887 | ||
8888 | st = gfc_new_symtree (is_op ? &ns->tb_uop_root : &ns->tb_sym_root, | |
8889 | name); | |
8890 | gcc_assert (st); | |
8891 | st->n.tb = tb; | |
8892 | ||
8893 | break; | |
8894 | } | |
f5acf0f2 | 8895 | |
94747289 DK |
8896 | case INTERFACE_INTRINSIC_OP: |
8897 | ns->tb_op[op] = tb; | |
8898 | break; | |
8899 | ||
8900 | default: | |
8901 | gcc_unreachable (); | |
8902 | } | |
e157f736 DK |
8903 | } |
8904 | ||
8905 | /* Now, match all following names as specific targets. */ | |
8906 | do | |
8907 | { | |
8908 | gfc_symtree* target_st; | |
8909 | gfc_tbp_generic* target; | |
8910 | ||
8911 | m = gfc_match_name (name); | |
8912 | if (m == MATCH_ERROR) | |
8913 | goto error; | |
8914 | if (m == MATCH_NO) | |
8915 | { | |
8916 | gfc_error ("Expected specific binding name at %C"); | |
8917 | goto error; | |
8918 | } | |
8919 | ||
e34ccb4c | 8920 | target_st = gfc_get_tbp_symtree (&ns->tb_sym_root, name); |
e157f736 DK |
8921 | |
8922 | /* See if this is a duplicate specification. */ | |
8923 | for (target = tb->u.generic; target; target = target->next) | |
8924 | if (target_st == target->specific_st) | |
8925 | { | |
c4100eae MLI |
8926 | gfc_error ("%qs already defined as specific binding for the" |
8927 | " generic %qs at %C", name, bind_name); | |
e157f736 DK |
8928 | goto error; |
8929 | } | |
8930 | ||
e157f736 DK |
8931 | target = gfc_get_tbp_generic (); |
8932 | target->specific_st = target_st; | |
8933 | target->specific = NULL; | |
8934 | target->next = tb->u.generic; | |
218e1228 TB |
8935 | target->is_operator = ((op_type == INTERFACE_USER_OP) |
8936 | || (op_type == INTERFACE_INTRINSIC_OP)); | |
e157f736 DK |
8937 | tb->u.generic = target; |
8938 | } | |
8939 | while (gfc_match (" ,") == MATCH_YES); | |
8940 | ||
8941 | /* Here should be the end. */ | |
8942 | if (gfc_match_eos () != MATCH_YES) | |
8943 | { | |
8944 | gfc_error ("Junk after GENERIC binding at %C"); | |
8945 | goto error; | |
8946 | } | |
8947 | ||
8948 | return MATCH_YES; | |
8949 | ||
8950 | error: | |
8951 | return MATCH_ERROR; | |
8952 | } | |
8953 | ||
8954 | ||
34523524 DK |
8955 | /* Match a FINAL declaration inside a derived type. */ |
8956 | ||
8957 | match | |
8958 | gfc_match_final_decl (void) | |
8959 | { | |
8960 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8961 | gfc_symbol* sym; | |
8962 | match m; | |
8963 | gfc_namespace* module_ns; | |
8964 | bool first, last; | |
30b608eb | 8965 | gfc_symbol* block; |
34523524 | 8966 | |
33344e0f JW |
8967 | if (gfc_current_form == FORM_FREE) |
8968 | { | |
8969 | char c = gfc_peek_ascii_char (); | |
8970 | if (!gfc_is_whitespace (c) && c != ':') | |
8971 | return MATCH_NO; | |
8972 | } | |
f5acf0f2 | 8973 | |
30b608eb | 8974 | if (gfc_state_stack->state != COMP_DERIVED_CONTAINS) |
34523524 | 8975 | { |
33344e0f JW |
8976 | if (gfc_current_form == FORM_FIXED) |
8977 | return MATCH_NO; | |
8978 | ||
34523524 | 8979 | gfc_error ("FINAL declaration at %C must be inside a derived type " |
30b608eb | 8980 | "CONTAINS section"); |
34523524 DK |
8981 | return MATCH_ERROR; |
8982 | } | |
8983 | ||
30b608eb DK |
8984 | block = gfc_state_stack->previous->sym; |
8985 | gcc_assert (block); | |
34523524 | 8986 | |
30b608eb DK |
8987 | if (!gfc_state_stack->previous || !gfc_state_stack->previous->previous |
8988 | || gfc_state_stack->previous->previous->state != COMP_MODULE) | |
34523524 DK |
8989 | { |
8990 | gfc_error ("Derived type declaration with FINAL at %C must be in the" | |
8991 | " specification part of a MODULE"); | |
8992 | return MATCH_ERROR; | |
8993 | } | |
8994 | ||
8995 | module_ns = gfc_current_ns; | |
8996 | gcc_assert (module_ns); | |
8997 | gcc_assert (module_ns->proc_name->attr.flavor == FL_MODULE); | |
8998 | ||
8999 | /* Match optional ::, don't care about MATCH_YES or MATCH_NO. */ | |
9000 | if (gfc_match (" ::") == MATCH_ERROR) | |
9001 | return MATCH_ERROR; | |
9002 | ||
9003 | /* Match the sequence of procedure names. */ | |
9004 | first = true; | |
9005 | last = false; | |
9006 | do | |
9007 | { | |
9008 | gfc_finalizer* f; | |
9009 | ||
9010 | if (first && gfc_match_eos () == MATCH_YES) | |
9011 | { | |
9012 | gfc_error ("Empty FINAL at %C"); | |
9013 | return MATCH_ERROR; | |
9014 | } | |
9015 | ||
9016 | m = gfc_match_name (name); | |
9017 | if (m == MATCH_NO) | |
9018 | { | |
9019 | gfc_error ("Expected module procedure name at %C"); | |
9020 | return MATCH_ERROR; | |
9021 | } | |
9022 | else if (m != MATCH_YES) | |
9023 | return MATCH_ERROR; | |
9024 | ||
9025 | if (gfc_match_eos () == MATCH_YES) | |
9026 | last = true; | |
9027 | if (!last && gfc_match_char (',') != MATCH_YES) | |
9028 | { | |
a4d9b221 | 9029 | gfc_error ("Expected %<,%> at %C"); |
34523524 DK |
9030 | return MATCH_ERROR; |
9031 | } | |
9032 | ||
9033 | if (gfc_get_symbol (name, module_ns, &sym)) | |
9034 | { | |
c4100eae | 9035 | gfc_error ("Unknown procedure name %qs at %C", name); |
34523524 DK |
9036 | return MATCH_ERROR; |
9037 | } | |
9038 | ||
9039 | /* Mark the symbol as module procedure. */ | |
9040 | if (sym->attr.proc != PROC_MODULE | |
524af0d6 | 9041 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
34523524 DK |
9042 | return MATCH_ERROR; |
9043 | ||
9044 | /* Check if we already have this symbol in the list, this is an error. */ | |
30b608eb | 9045 | for (f = block->f2k_derived->finalizers; f; f = f->next) |
f6fad28e | 9046 | if (f->proc_sym == sym) |
34523524 | 9047 | { |
c4100eae | 9048 | gfc_error ("%qs at %C is already defined as FINAL procedure!", |
34523524 DK |
9049 | name); |
9050 | return MATCH_ERROR; | |
9051 | } | |
9052 | ||
9053 | /* Add this symbol to the list of finalizers. */ | |
30b608eb | 9054 | gcc_assert (block->f2k_derived); |
2050626a | 9055 | sym->refs++; |
ece3f663 | 9056 | f = XCNEW (gfc_finalizer); |
f6fad28e DK |
9057 | f->proc_sym = sym; |
9058 | f->proc_tree = NULL; | |
34523524 | 9059 | f->where = gfc_current_locus; |
30b608eb DK |
9060 | f->next = block->f2k_derived->finalizers; |
9061 | block->f2k_derived->finalizers = f; | |
34523524 DK |
9062 | |
9063 | first = false; | |
9064 | } | |
9065 | while (!last); | |
9066 | ||
9067 | return MATCH_YES; | |
9068 | } | |
08a6b8e0 TB |
9069 | |
9070 | ||
9071 | const ext_attr_t ext_attr_list[] = { | |
e7ac6a7c TB |
9072 | { "dllimport", EXT_ATTR_DLLIMPORT, "dllimport" }, |
9073 | { "dllexport", EXT_ATTR_DLLEXPORT, "dllexport" }, | |
9074 | { "cdecl", EXT_ATTR_CDECL, "cdecl" }, | |
9075 | { "stdcall", EXT_ATTR_STDCALL, "stdcall" }, | |
9076 | { "fastcall", EXT_ATTR_FASTCALL, "fastcall" }, | |
9077 | { "no_arg_check", EXT_ATTR_NO_ARG_CHECK, NULL }, | |
9078 | { NULL, EXT_ATTR_LAST, NULL } | |
08a6b8e0 TB |
9079 | }; |
9080 | ||
9081 | /* Match a !GCC$ ATTRIBUTES statement of the form: | |
9082 | !GCC$ ATTRIBUTES attribute-list :: var-name [, var-name] ... | |
9083 | When we come here, we have already matched the !GCC$ ATTRIBUTES string. | |
9084 | ||
9085 | TODO: We should support all GCC attributes using the same syntax for | |
9086 | the attribute list, i.e. the list in C | |
9087 | __attributes(( attribute-list )) | |
9088 | matches then | |
9089 | !GCC$ ATTRIBUTES attribute-list :: | |
9090 | Cf. c-parser.c's c_parser_attributes; the data can then directly be | |
9091 | saved into a TREE. | |
9092 | ||
9093 | As there is absolutely no risk of confusion, we should never return | |
9094 | MATCH_NO. */ | |
9095 | match | |
9096 | gfc_match_gcc_attributes (void) | |
f5acf0f2 | 9097 | { |
08a6b8e0 TB |
9098 | symbol_attribute attr; |
9099 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9100 | unsigned id; | |
9101 | gfc_symbol *sym; | |
9102 | match m; | |
9103 | ||
9104 | gfc_clear_attr (&attr); | |
9105 | for(;;) | |
9106 | { | |
9107 | char ch; | |
9108 | ||
9109 | if (gfc_match_name (name) != MATCH_YES) | |
9110 | return MATCH_ERROR; | |
9111 | ||
9112 | for (id = 0; id < EXT_ATTR_LAST; id++) | |
9113 | if (strcmp (name, ext_attr_list[id].name) == 0) | |
9114 | break; | |
9115 | ||
9116 | if (id == EXT_ATTR_LAST) | |
9117 | { | |
9118 | gfc_error ("Unknown attribute in !GCC$ ATTRIBUTES statement at %C"); | |
9119 | return MATCH_ERROR; | |
9120 | } | |
9121 | ||
524af0d6 | 9122 | if (!gfc_add_ext_attribute (&attr, (ext_attr_id_t)id, &gfc_current_locus)) |
08a6b8e0 TB |
9123 | return MATCH_ERROR; |
9124 | ||
9125 | gfc_gobble_whitespace (); | |
9126 | ch = gfc_next_ascii_char (); | |
9127 | if (ch == ':') | |
9128 | { | |
9129 | /* This is the successful exit condition for the loop. */ | |
9130 | if (gfc_next_ascii_char () == ':') | |
9131 | break; | |
9132 | } | |
9133 | ||
9134 | if (ch == ',') | |
9135 | continue; | |
9136 | ||
9137 | goto syntax; | |
9138 | } | |
9139 | ||
9140 | if (gfc_match_eos () == MATCH_YES) | |
9141 | goto syntax; | |
9142 | ||
9143 | for(;;) | |
9144 | { | |
9145 | m = gfc_match_name (name); | |
9146 | if (m != MATCH_YES) | |
9147 | return m; | |
9148 | ||
9149 | if (find_special (name, &sym, true)) | |
9150 | return MATCH_ERROR; | |
f5acf0f2 | 9151 | |
08a6b8e0 TB |
9152 | sym->attr.ext_attr |= attr.ext_attr; |
9153 | ||
9154 | if (gfc_match_eos () == MATCH_YES) | |
9155 | break; | |
9156 | ||
9157 | if (gfc_match_char (',') != MATCH_YES) | |
9158 | goto syntax; | |
9159 | } | |
9160 | ||
9161 | return MATCH_YES; | |
9162 | ||
9163 | syntax: | |
9164 | gfc_error ("Syntax error in !GCC$ ATTRIBUTES statement at %C"); | |
9165 | return MATCH_ERROR; | |
9166 | } |