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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 | ||
5f0ba745 SK |
555 | /* Before parsing the rest of a DATA statement, check F2008:c1206. */ |
556 | if ((gfc_current_state () == COMP_FUNCTION | |
557 | || gfc_current_state () == COMP_SUBROUTINE) | |
558 | && gfc_state_stack->previous->state == COMP_INTERFACE) | |
559 | { | |
560 | gfc_error ("DATA statement at %C cannot appear within an INTERFACE"); | |
561 | return MATCH_ERROR; | |
562 | } | |
563 | ||
ca39e6f2 | 564 | set_in_match_data (true); |
2220652d | 565 | |
294fbfc8 TS |
566 | for (;;) |
567 | { | |
7b901ac4 KG |
568 | new_data = gfc_get_data (); |
569 | new_data->where = gfc_current_locus; | |
294fbfc8 | 570 | |
7b901ac4 | 571 | m = top_var_list (new_data); |
294fbfc8 TS |
572 | if (m != MATCH_YES) |
573 | goto cleanup; | |
574 | ||
7b901ac4 | 575 | m = top_val_list (new_data); |
294fbfc8 TS |
576 | if (m != MATCH_YES) |
577 | goto cleanup; | |
578 | ||
7b901ac4 KG |
579 | new_data->next = gfc_current_ns->data; |
580 | gfc_current_ns->data = new_data; | |
294fbfc8 TS |
581 | |
582 | if (gfc_match_eos () == MATCH_YES) | |
583 | break; | |
584 | ||
585 | gfc_match_char (','); /* Optional comma */ | |
586 | } | |
587 | ||
ca39e6f2 | 588 | set_in_match_data (false); |
2220652d | 589 | |
294fbfc8 TS |
590 | if (gfc_pure (NULL)) |
591 | { | |
592 | gfc_error ("DATA statement at %C is not allowed in a PURE procedure"); | |
593 | return MATCH_ERROR; | |
594 | } | |
ccd7751b | 595 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
f1f39033 | 596 | |
294fbfc8 TS |
597 | return MATCH_YES; |
598 | ||
599 | cleanup: | |
ca39e6f2 | 600 | set_in_match_data (false); |
7b901ac4 | 601 | gfc_free_data (new_data); |
294fbfc8 TS |
602 | return MATCH_ERROR; |
603 | } | |
604 | ||
605 | ||
606 | /************************ Declaration statements *********************/ | |
607 | ||
d3a9eea2 | 608 | |
eea58adb | 609 | /* Auxiliary function to merge DIMENSION and CODIMENSION array specs. */ |
d3a9eea2 | 610 | |
524af0d6 | 611 | static bool |
d3a9eea2 TB |
612 | merge_array_spec (gfc_array_spec *from, gfc_array_spec *to, bool copy) |
613 | { | |
614 | int i; | |
615 | ||
63fbf586 TB |
616 | if ((from->type == AS_ASSUMED_RANK && to->corank) |
617 | || (to->type == AS_ASSUMED_RANK && from->corank)) | |
618 | { | |
619 | gfc_error ("The assumed-rank array at %C shall not have a codimension"); | |
524af0d6 | 620 | return false; |
63fbf586 | 621 | } |
c62c6622 | 622 | |
d3a9eea2 TB |
623 | if (to->rank == 0 && from->rank > 0) |
624 | { | |
625 | to->rank = from->rank; | |
626 | to->type = from->type; | |
627 | to->cray_pointee = from->cray_pointee; | |
628 | to->cp_was_assumed = from->cp_was_assumed; | |
629 | ||
630 | for (i = 0; i < to->corank; i++) | |
631 | { | |
632 | to->lower[from->rank + i] = to->lower[i]; | |
633 | to->upper[from->rank + i] = to->upper[i]; | |
634 | } | |
635 | for (i = 0; i < from->rank; i++) | |
636 | { | |
637 | if (copy) | |
638 | { | |
639 | to->lower[i] = gfc_copy_expr (from->lower[i]); | |
640 | to->upper[i] = gfc_copy_expr (from->upper[i]); | |
641 | } | |
642 | else | |
643 | { | |
644 | to->lower[i] = from->lower[i]; | |
645 | to->upper[i] = from->upper[i]; | |
646 | } | |
647 | } | |
648 | } | |
649 | else if (to->corank == 0 && from->corank > 0) | |
650 | { | |
651 | to->corank = from->corank; | |
652 | to->cotype = from->cotype; | |
653 | ||
654 | for (i = 0; i < from->corank; i++) | |
655 | { | |
656 | if (copy) | |
657 | { | |
658 | to->lower[to->rank + i] = gfc_copy_expr (from->lower[i]); | |
659 | to->upper[to->rank + i] = gfc_copy_expr (from->upper[i]); | |
660 | } | |
661 | else | |
662 | { | |
663 | to->lower[to->rank + i] = from->lower[i]; | |
664 | to->upper[to->rank + i] = from->upper[i]; | |
665 | } | |
666 | } | |
667 | } | |
63fbf586 | 668 | |
524af0d6 | 669 | return true; |
d3a9eea2 TB |
670 | } |
671 | ||
672 | ||
6de9cd9a DN |
673 | /* Match an intent specification. Since this can only happen after an |
674 | INTENT word, a legal intent-spec must follow. */ | |
675 | ||
676 | static sym_intent | |
677 | match_intent_spec (void) | |
678 | { | |
679 | ||
680 | if (gfc_match (" ( in out )") == MATCH_YES) | |
681 | return INTENT_INOUT; | |
682 | if (gfc_match (" ( in )") == MATCH_YES) | |
683 | return INTENT_IN; | |
684 | if (gfc_match (" ( out )") == MATCH_YES) | |
685 | return INTENT_OUT; | |
686 | ||
687 | gfc_error ("Bad INTENT specification at %C"); | |
688 | return INTENT_UNKNOWN; | |
689 | } | |
690 | ||
691 | ||
692 | /* Matches a character length specification, which is either a | |
e69afb29 | 693 | specification expression, '*', or ':'. */ |
6de9cd9a DN |
694 | |
695 | static match | |
e69afb29 | 696 | char_len_param_value (gfc_expr **expr, bool *deferred) |
6de9cd9a | 697 | { |
cba28dad JD |
698 | match m; |
699 | ||
e69afb29 SK |
700 | *expr = NULL; |
701 | *deferred = false; | |
702 | ||
6de9cd9a | 703 | if (gfc_match_char ('*') == MATCH_YES) |
e69afb29 SK |
704 | return MATCH_YES; |
705 | ||
706 | if (gfc_match_char (':') == MATCH_YES) | |
6de9cd9a | 707 | { |
98a819ea | 708 | if (!gfc_notify_std (GFC_STD_F2003, "deferred type parameter at %C")) |
e69afb29 SK |
709 | return MATCH_ERROR; |
710 | ||
711 | *deferred = true; | |
712 | ||
6de9cd9a DN |
713 | return MATCH_YES; |
714 | } | |
715 | ||
cba28dad | 716 | m = gfc_match_expr (expr); |
f37e928c | 717 | |
98a819ea SK |
718 | if (m == MATCH_NO || m == MATCH_ERROR) |
719 | return m; | |
720 | ||
721 | if (!gfc_expr_check_typed (*expr, gfc_current_ns, false)) | |
f37e928c DK |
722 | return MATCH_ERROR; |
723 | ||
98a819ea | 724 | if ((*expr)->expr_type == EXPR_FUNCTION) |
cba28dad | 725 | { |
8d48826b SK |
726 | if ((*expr)->ts.type == BT_INTEGER |
727 | || ((*expr)->ts.type == BT_UNKNOWN | |
728 | && strcmp((*expr)->symtree->name, "null") != 0)) | |
729 | return MATCH_YES; | |
730 | ||
731 | goto syntax; | |
732 | } | |
733 | else if ((*expr)->expr_type == EXPR_CONSTANT) | |
734 | { | |
735 | /* F2008, 4.4.3.1: The length is a type parameter; its kind is | |
736 | processor dependent and its value is greater than or equal to zero. | |
737 | F2008, 4.4.3.2: If the character length parameter value evaluates | |
738 | to a negative value, the length of character entities declared | |
739 | is zero. */ | |
740 | ||
741 | if ((*expr)->ts.type == BT_INTEGER) | |
cba28dad | 742 | { |
8d48826b SK |
743 | if (mpz_cmp_si ((*expr)->value.integer, 0) < 0) |
744 | mpz_set_si ((*expr)->value.integer, 0); | |
cba28dad | 745 | } |
8d48826b SK |
746 | else |
747 | goto syntax; | |
cba28dad | 748 | } |
8d48826b SK |
749 | else if ((*expr)->expr_type == EXPR_ARRAY) |
750 | goto syntax; | |
751 | else if ((*expr)->expr_type == EXPR_VARIABLE) | |
752 | { | |
753 | gfc_expr *e; | |
754 | ||
755 | e = gfc_copy_expr (*expr); | |
756 | ||
757 | /* This catches the invalid code "[character(m(2:3)) :: 'x', 'y']", | |
758 | which causes an ICE if gfc_reduce_init_expr() is called. */ | |
54b96a2d SK |
759 | if (e->ref && e->ref->type == REF_ARRAY |
760 | && e->ref->u.ar.type == AR_UNKNOWN | |
8d48826b SK |
761 | && e->ref->u.ar.dimen_type[0] == DIMEN_RANGE) |
762 | goto syntax; | |
763 | ||
764 | gfc_reduce_init_expr (e); | |
98a819ea | 765 | |
54b96a2d SK |
766 | if ((e->ref && e->ref->type == REF_ARRAY |
767 | && e->ref->u.ar.type != AR_ELEMENT) | |
8d48826b SK |
768 | || (!e->ref && e->expr_type == EXPR_ARRAY)) |
769 | { | |
770 | gfc_free_expr (e); | |
771 | goto syntax; | |
772 | } | |
773 | ||
774 | gfc_free_expr (e); | |
775 | } | |
98a819ea | 776 | |
cba28dad JD |
777 | return m; |
778 | ||
779 | syntax: | |
8d48826b | 780 | gfc_error ("Scalar INTEGER expression expected at %L", &(*expr)->where); |
cba28dad | 781 | return MATCH_ERROR; |
6de9cd9a DN |
782 | } |
783 | ||
784 | ||
785 | /* A character length is a '*' followed by a literal integer or a | |
786 | char_len_param_value in parenthesis. */ | |
787 | ||
788 | static match | |
62732c30 | 789 | match_char_length (gfc_expr **expr, bool *deferred, bool obsolescent_check) |
6de9cd9a | 790 | { |
5cf54585 | 791 | int length; |
6de9cd9a DN |
792 | match m; |
793 | ||
f5acf0f2 | 794 | *deferred = false; |
6de9cd9a DN |
795 | m = gfc_match_char ('*'); |
796 | if (m != MATCH_YES) | |
797 | return m; | |
798 | ||
5cf54585 | 799 | m = gfc_match_small_literal_int (&length, NULL); |
6de9cd9a DN |
800 | if (m == MATCH_ERROR) |
801 | return m; | |
802 | ||
803 | if (m == MATCH_YES) | |
804 | { | |
62732c30 | 805 | if (obsolescent_check |
524af0d6 | 806 | && !gfc_notify_std (GFC_STD_F95_OBS, "Old-style character length at %C")) |
e2ab8b09 | 807 | return MATCH_ERROR; |
b7e75771 | 808 | *expr = gfc_get_int_expr (gfc_default_integer_kind, NULL, length); |
6de9cd9a DN |
809 | return m; |
810 | } | |
811 | ||
812 | if (gfc_match_char ('(') == MATCH_NO) | |
813 | goto syntax; | |
814 | ||
e69afb29 | 815 | m = char_len_param_value (expr, deferred); |
1c8bcdf7 PT |
816 | if (m != MATCH_YES && gfc_matching_function) |
817 | { | |
818 | gfc_undo_symbols (); | |
819 | m = MATCH_YES; | |
820 | } | |
821 | ||
6de9cd9a DN |
822 | if (m == MATCH_ERROR) |
823 | return m; | |
824 | if (m == MATCH_NO) | |
825 | goto syntax; | |
826 | ||
827 | if (gfc_match_char (')') == MATCH_NO) | |
828 | { | |
829 | gfc_free_expr (*expr); | |
830 | *expr = NULL; | |
831 | goto syntax; | |
832 | } | |
833 | ||
834 | return MATCH_YES; | |
835 | ||
836 | syntax: | |
837 | gfc_error ("Syntax error in character length specification at %C"); | |
838 | return MATCH_ERROR; | |
839 | } | |
840 | ||
841 | ||
9e35b386 EE |
842 | /* Special subroutine for finding a symbol. Check if the name is found |
843 | in the current name space. If not, and we're compiling a function or | |
844 | subroutine and the parent compilation unit is an interface, then check | |
845 | to see if the name we've been given is the name of the interface | |
846 | (located in another namespace). */ | |
6de9cd9a DN |
847 | |
848 | static int | |
08a6b8e0 | 849 | find_special (const char *name, gfc_symbol **result, bool allow_subroutine) |
6de9cd9a DN |
850 | { |
851 | gfc_state_data *s; | |
08a6b8e0 | 852 | gfc_symtree *st; |
9e35b386 | 853 | int i; |
6de9cd9a | 854 | |
08a6b8e0 | 855 | i = gfc_get_sym_tree (name, NULL, &st, allow_subroutine); |
d51347f9 | 856 | if (i == 0) |
08a6b8e0 TB |
857 | { |
858 | *result = st ? st->n.sym : NULL; | |
859 | goto end; | |
860 | } | |
d51347f9 | 861 | |
6de9cd9a DN |
862 | if (gfc_current_state () != COMP_SUBROUTINE |
863 | && gfc_current_state () != COMP_FUNCTION) | |
9e35b386 | 864 | goto end; |
6de9cd9a DN |
865 | |
866 | s = gfc_state_stack->previous; | |
867 | if (s == NULL) | |
9e35b386 | 868 | goto end; |
6de9cd9a DN |
869 | |
870 | if (s->state != COMP_INTERFACE) | |
9e35b386 | 871 | goto end; |
6de9cd9a | 872 | if (s->sym == NULL) |
66e4ab31 | 873 | goto end; /* Nameless interface. */ |
6de9cd9a DN |
874 | |
875 | if (strcmp (name, s->sym->name) == 0) | |
876 | { | |
877 | *result = s->sym; | |
878 | return 0; | |
879 | } | |
880 | ||
9e35b386 EE |
881 | end: |
882 | return i; | |
6de9cd9a DN |
883 | } |
884 | ||
885 | ||
886 | /* Special subroutine for getting a symbol node associated with a | |
887 | procedure name, used in SUBROUTINE and FUNCTION statements. The | |
888 | symbol is created in the parent using with symtree node in the | |
889 | child unit pointing to the symbol. If the current namespace has no | |
890 | parent, then the symbol is just created in the current unit. */ | |
891 | ||
892 | static int | |
636dff67 | 893 | get_proc_name (const char *name, gfc_symbol **result, bool module_fcn_entry) |
6de9cd9a DN |
894 | { |
895 | gfc_symtree *st; | |
896 | gfc_symbol *sym; | |
a7ca4d8d | 897 | int rc = 0; |
6de9cd9a | 898 | |
1a492601 PT |
899 | /* Module functions have to be left in their own namespace because |
900 | they have potentially (almost certainly!) already been referenced. | |
901 | In this sense, they are rather like external functions. This is | |
902 | fixed up in resolve.c(resolve_entries), where the symbol name- | |
903 | space is set to point to the master function, so that the fake | |
904 | result mechanism can work. */ | |
905 | if (module_fcn_entry) | |
6c12686b PT |
906 | { |
907 | /* Present if entry is declared to be a module procedure. */ | |
908 | rc = gfc_find_symbol (name, gfc_current_ns->parent, 0, result); | |
aa84a9a5 | 909 | |
6c12686b PT |
910 | if (*result == NULL) |
911 | rc = gfc_get_symbol (name, NULL, result); | |
2e32a71e | 912 | else if (!gfc_get_symbol (name, NULL, &sym) && sym |
aa84a9a5 PT |
913 | && (*result)->ts.type == BT_UNKNOWN |
914 | && sym->attr.flavor == FL_UNKNOWN) | |
915 | /* Pick up the typespec for the entry, if declared in the function | |
916 | body. Note that this symbol is FL_UNKNOWN because it will | |
917 | only have appeared in a type declaration. The local symtree | |
918 | is set to point to the module symbol and a unique symtree | |
919 | to the local version. This latter ensures a correct clearing | |
920 | of the symbols. */ | |
2e32a71e PT |
921 | { |
922 | /* If the ENTRY proceeds its specification, we need to ensure | |
923 | that this does not raise a "has no IMPLICIT type" error. */ | |
924 | if (sym->ts.type == BT_UNKNOWN) | |
0e5a218b | 925 | sym->attr.untyped = 1; |
2e32a71e | 926 | |
0e5a218b | 927 | (*result)->ts = sym->ts; |
2e32a71e PT |
928 | |
929 | /* Put the symbol in the procedure namespace so that, should | |
df2fba9e | 930 | the ENTRY precede its specification, the specification |
2e32a71e PT |
931 | can be applied. */ |
932 | (*result)->ns = gfc_current_ns; | |
933 | ||
934 | gfc_find_sym_tree (name, gfc_current_ns, 0, &st); | |
935 | st->n.sym = *result; | |
936 | st = gfc_get_unique_symtree (gfc_current_ns); | |
2050626a | 937 | sym->refs++; |
2e32a71e PT |
938 | st->n.sym = sym; |
939 | } | |
6c12686b | 940 | } |
68ea355b PT |
941 | else |
942 | rc = gfc_get_symbol (name, gfc_current_ns->parent, result); | |
6de9cd9a | 943 | |
a7ca4d8d PT |
944 | if (rc) |
945 | return rc; | |
946 | ||
68ea355b | 947 | sym = *result; |
79124116 PT |
948 | if (sym->attr.proc == PROC_ST_FUNCTION) |
949 | return rc; | |
6de9cd9a | 950 | |
4668d6f9 PT |
951 | if (sym->attr.module_procedure |
952 | && sym->attr.if_source == IFSRC_IFBODY) | |
953 | { | |
954 | /* Create a partially populated interface symbol to carry the | |
955 | characteristics of the procedure and the result. */ | |
956 | sym->ts.interface = gfc_new_symbol (name, sym->ns); | |
957 | gfc_add_type (sym->ts.interface, &(sym->ts), | |
958 | &gfc_current_locus); | |
959 | gfc_copy_attr (&sym->ts.interface->attr, &sym->attr, NULL); | |
960 | if (sym->attr.dimension) | |
961 | sym->ts.interface->as = gfc_copy_array_spec (sym->as); | |
962 | ||
963 | /* Ideally, at this point, a copy would be made of the formal | |
964 | arguments and their namespace. However, this does not appear | |
965 | to be necessary, albeit at the expense of not being able to | |
966 | use gfc_compare_interfaces directly. */ | |
967 | ||
968 | if (sym->result && sym->result != sym) | |
969 | { | |
970 | sym->ts.interface->result = sym->result; | |
971 | sym->result = NULL; | |
972 | } | |
973 | else if (sym->result) | |
974 | { | |
975 | sym->ts.interface->result = sym->ts.interface; | |
976 | } | |
977 | } | |
978 | else if (sym && !sym->gfc_new | |
979 | && gfc_current_state () != COMP_INTERFACE) | |
68ea355b | 980 | { |
cda7004b PT |
981 | /* Trap another encompassed procedure with the same name. All |
982 | these conditions are necessary to avoid picking up an entry | |
983 | whose name clashes with that of the encompassing procedure; | |
2050626a | 984 | this is handled using gsymbols to register unique, globally |
cda7004b | 985 | accessible names. */ |
68ea355b | 986 | if (sym->attr.flavor != 0 |
636dff67 SK |
987 | && sym->attr.proc != 0 |
988 | && (sym->attr.subroutine || sym->attr.function) | |
989 | && sym->attr.if_source != IFSRC_UNKNOWN) | |
fea70c99 MLI |
990 | gfc_error_now ("Procedure %qs at %C is already defined at %L", |
991 | name, &sym->declared_at); | |
68ea355b | 992 | |
fd3e70af JD |
993 | /* Trap a procedure with a name the same as interface in the |
994 | encompassing scope. */ | |
995 | if (sym->attr.generic != 0 | |
2305fa31 JD |
996 | && (sym->attr.subroutine || sym->attr.function) |
997 | && !sym->attr.mod_proc) | |
fea70c99 MLI |
998 | gfc_error_now ("Name %qs at %C is already defined" |
999 | " as a generic interface at %L", | |
1000 | name, &sym->declared_at); | |
fd3e70af | 1001 | |
68ea355b PT |
1002 | /* Trap declarations of attributes in encompassing scope. The |
1003 | signature for this is that ts.kind is set. Legitimate | |
1004 | references only set ts.type. */ | |
1005 | if (sym->ts.kind != 0 | |
636dff67 SK |
1006 | && !sym->attr.implicit_type |
1007 | && sym->attr.proc == 0 | |
1008 | && gfc_current_ns->parent != NULL | |
1009 | && sym->attr.access == 0 | |
1010 | && !module_fcn_entry) | |
fea70c99 MLI |
1011 | gfc_error_now ("Procedure %qs at %C has an explicit interface " |
1012 | "and must not have attributes declared at %L", | |
1013 | name, &sym->declared_at); | |
68ea355b PT |
1014 | } |
1015 | ||
1016 | if (gfc_current_ns->parent == NULL || *result == NULL) | |
1017 | return rc; | |
6de9cd9a | 1018 | |
1a492601 PT |
1019 | /* Module function entries will already have a symtree in |
1020 | the current namespace but will need one at module level. */ | |
1021 | if (module_fcn_entry) | |
6c12686b PT |
1022 | { |
1023 | /* Present if entry is declared to be a module procedure. */ | |
1024 | rc = gfc_find_sym_tree (name, gfc_current_ns->parent, 0, &st); | |
1025 | if (st == NULL) | |
1026 | st = gfc_new_symtree (&gfc_current_ns->parent->sym_root, name); | |
1027 | } | |
1a492601 PT |
1028 | else |
1029 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); | |
6de9cd9a | 1030 | |
6de9cd9a DN |
1031 | st->n.sym = sym; |
1032 | sym->refs++; | |
1033 | ||
66e4ab31 | 1034 | /* See if the procedure should be a module procedure. */ |
6de9cd9a | 1035 | |
1a492601 | 1036 | if (((sym->ns->proc_name != NULL |
6c12686b PT |
1037 | && sym->ns->proc_name->attr.flavor == FL_MODULE |
1038 | && sym->attr.proc != PROC_MODULE) | |
1039 | || (module_fcn_entry && sym->attr.proc != PROC_MODULE)) | |
524af0d6 | 1040 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
6de9cd9a DN |
1041 | rc = 2; |
1042 | ||
1043 | return rc; | |
1044 | } | |
1045 | ||
1046 | ||
a8b3b0b6 CR |
1047 | /* Verify that the given symbol representing a parameter is C |
1048 | interoperable, by checking to see if it was marked as such after | |
1049 | its declaration. If the given symbol is not interoperable, a | |
1050 | warning is reported, thus removing the need to return the status to | |
1051 | the calling function. The standard does not require the user use | |
1052 | one of the iso_c_binding named constants to declare an | |
1053 | interoperable parameter, but we can't be sure if the param is C | |
1054 | interop or not if the user doesn't. For example, integer(4) may be | |
1055 | legal Fortran, but doesn't have meaning in C. It may interop with | |
1056 | a number of the C types, which causes a problem because the | |
1057 | compiler can't know which one. This code is almost certainly not | |
1058 | portable, and the user will get what they deserve if the C type | |
1059 | across platforms isn't always interoperable with integer(4). If | |
1060 | the user had used something like integer(c_int) or integer(c_long), | |
1061 | the compiler could have automatically handled the varying sizes | |
1062 | across platforms. */ | |
1063 | ||
524af0d6 | 1064 | bool |
00820a2a | 1065 | gfc_verify_c_interop_param (gfc_symbol *sym) |
a8b3b0b6 CR |
1066 | { |
1067 | int is_c_interop = 0; | |
524af0d6 | 1068 | bool retval = true; |
a8b3b0b6 CR |
1069 | |
1070 | /* We check implicitly typed variables in symbol.c:gfc_set_default_type(). | |
1071 | Don't repeat the checks here. */ | |
1072 | if (sym->attr.implicit_type) | |
524af0d6 | 1073 | return true; |
f5acf0f2 | 1074 | |
a8b3b0b6 CR |
1075 | /* For subroutines or functions that are passed to a BIND(C) procedure, |
1076 | they're interoperable if they're BIND(C) and their params are all | |
1077 | interoperable. */ | |
1078 | if (sym->attr.flavor == FL_PROCEDURE) | |
1079 | { | |
1080 | if (sym->attr.is_bind_c == 0) | |
1081 | { | |
4daa149b TB |
1082 | gfc_error_now ("Procedure %qs at %L must have the BIND(C) " |
1083 | "attribute to be C interoperable", sym->name, | |
1084 | &(sym->declared_at)); | |
524af0d6 | 1085 | return false; |
a8b3b0b6 CR |
1086 | } |
1087 | else | |
1088 | { | |
1089 | if (sym->attr.is_c_interop == 1) | |
1090 | /* We've already checked this procedure; don't check it again. */ | |
524af0d6 | 1091 | return true; |
a8b3b0b6 CR |
1092 | else |
1093 | return verify_bind_c_sym (sym, &(sym->ts), sym->attr.in_common, | |
1094 | sym->common_block); | |
1095 | } | |
1096 | } | |
f5acf0f2 | 1097 | |
a8b3b0b6 CR |
1098 | /* See if we've stored a reference to a procedure that owns sym. */ |
1099 | if (sym->ns != NULL && sym->ns->proc_name != NULL) | |
1100 | { | |
1101 | if (sym->ns->proc_name->attr.is_bind_c == 1) | |
1102 | { | |
524af0d6 | 1103 | is_c_interop = (gfc_verify_c_interop(&(sym->ts)) ? 1 : 0); |
a8b3b0b6 CR |
1104 | |
1105 | if (is_c_interop != 1) | |
1106 | { | |
1107 | /* Make personalized messages to give better feedback. */ | |
1108 | if (sym->ts.type == BT_DERIVED) | |
c4100eae MLI |
1109 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1110 | "BIND(C) procedure %qs but is not C interoperable " | |
1111 | "because derived type %qs is not C interoperable", | |
a8b3b0b6 | 1112 | sym->name, &(sym->declared_at), |
f5acf0f2 | 1113 | sym->ns->proc_name->name, |
bc21d315 | 1114 | sym->ts.u.derived->name); |
00820a2a | 1115 | else if (sym->ts.type == BT_CLASS) |
c4100eae MLI |
1116 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1117 | "BIND(C) procedure %qs but is not C interoperable " | |
00820a2a JW |
1118 | "because it is polymorphic", |
1119 | sym->name, &(sym->declared_at), | |
1120 | sym->ns->proc_name->name); | |
4daa149b | 1121 | else if (warn_c_binding_type) |
48749dbc MLI |
1122 | gfc_warning (OPT_Wc_binding_type, |
1123 | "Variable %qs at %L is a dummy argument of the " | |
1124 | "BIND(C) procedure %qs but may not be C " | |
a8b3b0b6 CR |
1125 | "interoperable", |
1126 | sym->name, &(sym->declared_at), | |
1127 | sym->ns->proc_name->name); | |
1128 | } | |
aa5e22f0 CR |
1129 | |
1130 | /* Character strings are only C interoperable if they have a | |
1131 | length of 1. */ | |
1132 | if (sym->ts.type == BT_CHARACTER) | |
1133 | { | |
bc21d315 | 1134 | gfc_charlen *cl = sym->ts.u.cl; |
aa5e22f0 CR |
1135 | if (!cl || !cl->length || cl->length->expr_type != EXPR_CONSTANT |
1136 | || mpz_cmp_si (cl->length->value.integer, 1) != 0) | |
1137 | { | |
c4100eae | 1138 | gfc_error ("Character argument %qs at %L " |
aa5e22f0 | 1139 | "must be length 1 because " |
c4100eae | 1140 | "procedure %qs is BIND(C)", |
aa5e22f0 CR |
1141 | sym->name, &sym->declared_at, |
1142 | sym->ns->proc_name->name); | |
524af0d6 | 1143 | retval = false; |
aa5e22f0 CR |
1144 | } |
1145 | } | |
1146 | ||
a8b3b0b6 CR |
1147 | /* We have to make sure that any param to a bind(c) routine does |
1148 | not have the allocatable, pointer, or optional attributes, | |
1149 | according to J3/04-007, section 5.1. */ | |
60f6ca95 | 1150 | if (sym->attr.allocatable == 1 |
a4d9b221 TB |
1151 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable %qs at %L with " |
1152 | "ALLOCATABLE attribute in procedure %qs " | |
60f6ca95 TB |
1153 | "with BIND(C)", sym->name, |
1154 | &(sym->declared_at), | |
1155 | sym->ns->proc_name->name)) | |
1156 | retval = false; | |
1157 | ||
1158 | if (sym->attr.pointer == 1 | |
a4d9b221 TB |
1159 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable %qs at %L with " |
1160 | "POINTER attribute in procedure %qs " | |
60f6ca95 TB |
1161 | "with BIND(C)", sym->name, |
1162 | &(sym->declared_at), | |
1163 | sym->ns->proc_name->name)) | |
1164 | retval = false; | |
1165 | ||
1166 | if ((sym->attr.allocatable || sym->attr.pointer) && !sym->as) | |
a8b3b0b6 | 1167 | { |
c4100eae MLI |
1168 | gfc_error ("Scalar variable %qs at %L with POINTER or " |
1169 | "ALLOCATABLE in procedure %qs with BIND(C) is not yet" | |
60f6ca95 | 1170 | " supported", sym->name, &(sym->declared_at), |
a8b3b0b6 | 1171 | sym->ns->proc_name->name); |
524af0d6 | 1172 | retval = false; |
a8b3b0b6 CR |
1173 | } |
1174 | ||
2e8d9212 | 1175 | if (sym->attr.optional == 1 && sym->attr.value) |
a8b3b0b6 | 1176 | { |
c4100eae MLI |
1177 | gfc_error ("Variable %qs at %L cannot have both the OPTIONAL " |
1178 | "and the VALUE attribute because procedure %qs " | |
2e8d9212 | 1179 | "is BIND(C)", sym->name, &(sym->declared_at), |
a8b3b0b6 | 1180 | sym->ns->proc_name->name); |
524af0d6 | 1181 | retval = false; |
a8b3b0b6 | 1182 | } |
2e8d9212 | 1183 | else if (sym->attr.optional == 1 |
a4d9b221 | 1184 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable %qs " |
524af0d6 | 1185 | "at %L with OPTIONAL attribute in " |
a4d9b221 | 1186 | "procedure %qs which is BIND(C)", |
524af0d6 JB |
1187 | sym->name, &(sym->declared_at), |
1188 | sym->ns->proc_name->name)) | |
1189 | retval = false; | |
a8b3b0b6 CR |
1190 | |
1191 | /* Make sure that if it has the dimension attribute, that it is | |
95d47b8d TB |
1192 | either assumed size or explicit shape. Deferred shape is already |
1193 | covered by the pointer/allocatable attribute. */ | |
1194 | if (sym->as != NULL && sym->as->type == AS_ASSUMED_SHAPE | |
2a2703a2 | 1195 | && !gfc_notify_std (GFC_STD_F2008_TS, "Assumed-shape array %qs " |
524af0d6 | 1196 | "at %L as dummy argument to the BIND(C) " |
811582ec | 1197 | "procedure %qs at %L", sym->name, |
524af0d6 JB |
1198 | &(sym->declared_at), |
1199 | sym->ns->proc_name->name, | |
1200 | &(sym->ns->proc_name->declared_at))) | |
1201 | retval = false; | |
a8b3b0b6 CR |
1202 | } |
1203 | } | |
1204 | ||
1205 | return retval; | |
1206 | } | |
1207 | ||
1208 | ||
cf2b3c22 | 1209 | |
a8b3b0b6 | 1210 | /* Function called by variable_decl() that adds a name to the symbol table. */ |
6de9cd9a | 1211 | |
524af0d6 | 1212 | static bool |
e69afb29 | 1213 | build_sym (const char *name, gfc_charlen *cl, bool cl_deferred, |
636dff67 | 1214 | gfc_array_spec **as, locus *var_locus) |
6de9cd9a DN |
1215 | { |
1216 | symbol_attribute attr; | |
1217 | gfc_symbol *sym; | |
1218 | ||
9e35b386 | 1219 | if (gfc_get_symbol (name, NULL, &sym)) |
524af0d6 | 1220 | return false; |
6de9cd9a | 1221 | |
66e4ab31 | 1222 | /* Start updating the symbol table. Add basic type attribute if present. */ |
6de9cd9a | 1223 | if (current_ts.type != BT_UNKNOWN |
636dff67 SK |
1224 | && (sym->attr.implicit_type == 0 |
1225 | || !gfc_compare_types (&sym->ts, ¤t_ts)) | |
524af0d6 JB |
1226 | && !gfc_add_type (sym, ¤t_ts, var_locus)) |
1227 | return false; | |
6de9cd9a DN |
1228 | |
1229 | if (sym->ts.type == BT_CHARACTER) | |
e69afb29 SK |
1230 | { |
1231 | sym->ts.u.cl = cl; | |
1232 | sym->ts.deferred = cl_deferred; | |
1233 | } | |
6de9cd9a DN |
1234 | |
1235 | /* Add dimension attribute if present. */ | |
524af0d6 JB |
1236 | if (!gfc_set_array_spec (sym, *as, var_locus)) |
1237 | return false; | |
6de9cd9a DN |
1238 | *as = NULL; |
1239 | ||
1240 | /* Add attribute to symbol. The copy is so that we can reset the | |
1241 | dimension attribute. */ | |
1242 | attr = current_attr; | |
1243 | attr.dimension = 0; | |
be59db2d | 1244 | attr.codimension = 0; |
6de9cd9a | 1245 | |
524af0d6 JB |
1246 | if (!gfc_copy_attr (&sym->attr, &attr, var_locus)) |
1247 | return false; | |
6de9cd9a | 1248 | |
a8b3b0b6 CR |
1249 | /* Finish any work that may need to be done for the binding label, |
1250 | if it's a bind(c). The bind(c) attr is found before the symbol | |
1251 | is made, and before the symbol name (for data decls), so the | |
1252 | current_ts is holding the binding label, or nothing if the | |
1253 | name= attr wasn't given. Therefore, test here if we're dealing | |
1254 | with a bind(c) and make sure the binding label is set correctly. */ | |
1255 | if (sym->attr.is_bind_c == 1) | |
1256 | { | |
62603fae | 1257 | if (!sym->binding_label) |
a8b3b0b6 | 1258 | { |
ad4a2f64 TB |
1259 | /* Set the binding label and verify that if a NAME= was specified |
1260 | then only one identifier was in the entity-decl-list. */ | |
524af0d6 JB |
1261 | if (!set_binding_label (&sym->binding_label, sym->name, |
1262 | num_idents_on_line)) | |
1263 | return false; | |
a8b3b0b6 CR |
1264 | } |
1265 | } | |
1266 | ||
1267 | /* See if we know we're in a common block, and if it's a bind(c) | |
1268 | common then we need to make sure we're an interoperable type. */ | |
1269 | if (sym->attr.in_common == 1) | |
1270 | { | |
1271 | /* Test the common block object. */ | |
1272 | if (sym->common_block != NULL && sym->common_block->is_bind_c == 1 | |
1273 | && sym->ts.is_c_interop != 1) | |
1274 | { | |
4daa149b | 1275 | gfc_error_now ("Variable %qs in common block %qs at %C " |
a8b3b0b6 | 1276 | "must be declared with a C interoperable " |
4daa149b | 1277 | "kind since common block %qs is BIND(C)", |
a8b3b0b6 CR |
1278 | sym->name, sym->common_block->name, |
1279 | sym->common_block->name); | |
1280 | gfc_clear_error (); | |
1281 | } | |
1282 | } | |
1283 | ||
9a3db5a3 PT |
1284 | sym->attr.implied_index = 0; |
1285 | ||
528622fd | 1286 | if (sym->ts.type == BT_CLASS) |
9b6da3c7 | 1287 | return gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as); |
cf2b3c22 | 1288 | |
524af0d6 | 1289 | return true; |
6de9cd9a DN |
1290 | } |
1291 | ||
636dff67 | 1292 | |
df7cc9b5 | 1293 | /* Set character constant to the given length. The constant will be padded or |
d2848082 DK |
1294 | truncated. If we're inside an array constructor without a typespec, we |
1295 | additionally check that all elements have the same length; check_len -1 | |
1296 | means no checking. */ | |
df7cc9b5 FW |
1297 | |
1298 | void | |
d2848082 | 1299 | gfc_set_constant_character_len (int len, gfc_expr *expr, int check_len) |
df7cc9b5 | 1300 | { |
00660189 | 1301 | gfc_char_t *s; |
df7cc9b5 FW |
1302 | int slen; |
1303 | ||
1304 | gcc_assert (expr->expr_type == EXPR_CONSTANT); | |
834e9dbb SK |
1305 | |
1306 | if (expr->ts.type != BT_CHARACTER) | |
1307 | return; | |
df7cc9b5 FW |
1308 | |
1309 | slen = expr->value.character.length; | |
1310 | if (len != slen) | |
1311 | { | |
00660189 FXC |
1312 | s = gfc_get_wide_string (len + 1); |
1313 | memcpy (s, expr->value.character.string, | |
1314 | MIN (len, slen) * sizeof (gfc_char_t)); | |
df7cc9b5 | 1315 | if (len > slen) |
00660189 | 1316 | gfc_wide_memset (&s[slen], ' ', len - slen); |
2220652d | 1317 | |
a96c39ea | 1318 | if (warn_character_truncation && slen > len) |
4daa149b TB |
1319 | gfc_warning_now (OPT_Wcharacter_truncation, |
1320 | "CHARACTER expression at %L is being truncated " | |
1321 | "(%d/%d)", &expr->where, slen, len); | |
2220652d PT |
1322 | |
1323 | /* Apply the standard by 'hand' otherwise it gets cleared for | |
1324 | initializers. */ | |
d2848082 DK |
1325 | if (check_len != -1 && slen != check_len |
1326 | && !(gfc_option.allow_std & GFC_STD_GNU)) | |
2220652d PT |
1327 | gfc_error_now ("The CHARACTER elements of the array constructor " |
1328 | "at %L must have the same length (%d/%d)", | |
d2848082 | 1329 | &expr->where, slen, check_len); |
2220652d | 1330 | |
150675a8 | 1331 | s[len] = '\0'; |
cede9502 | 1332 | free (expr->value.character.string); |
df7cc9b5 FW |
1333 | expr->value.character.string = s; |
1334 | expr->value.character.length = len; | |
1335 | } | |
1336 | } | |
6de9cd9a | 1337 | |
25d8f0a2 | 1338 | |
d51347f9 | 1339 | /* Function to create and update the enumerator history |
25d8f0a2 | 1340 | using the information passed as arguments. |
d51347f9 TB |
1341 | Pointer "max_enum" is also updated, to point to |
1342 | enum history node containing largest initializer. | |
25d8f0a2 TS |
1343 | |
1344 | SYM points to the symbol node of enumerator. | |
66e4ab31 | 1345 | INIT points to its enumerator value. */ |
25d8f0a2 | 1346 | |
d51347f9 | 1347 | static void |
636dff67 | 1348 | create_enum_history (gfc_symbol *sym, gfc_expr *init) |
25d8f0a2 TS |
1349 | { |
1350 | enumerator_history *new_enum_history; | |
1351 | gcc_assert (sym != NULL && init != NULL); | |
1352 | ||
ece3f663 | 1353 | new_enum_history = XCNEW (enumerator_history); |
25d8f0a2 TS |
1354 | |
1355 | new_enum_history->sym = sym; | |
1356 | new_enum_history->initializer = init; | |
1357 | new_enum_history->next = NULL; | |
1358 | ||
1359 | if (enum_history == NULL) | |
1360 | { | |
1361 | enum_history = new_enum_history; | |
1362 | max_enum = enum_history; | |
1363 | } | |
1364 | else | |
1365 | { | |
1366 | new_enum_history->next = enum_history; | |
1367 | enum_history = new_enum_history; | |
1368 | ||
d51347f9 | 1369 | if (mpz_cmp (max_enum->initializer->value.integer, |
25d8f0a2 | 1370 | new_enum_history->initializer->value.integer) < 0) |
636dff67 | 1371 | max_enum = new_enum_history; |
25d8f0a2 TS |
1372 | } |
1373 | } | |
1374 | ||
1375 | ||
d51347f9 | 1376 | /* Function to free enum kind history. */ |
25d8f0a2 | 1377 | |
d51347f9 | 1378 | void |
636dff67 | 1379 | gfc_free_enum_history (void) |
25d8f0a2 | 1380 | { |
d51347f9 TB |
1381 | enumerator_history *current = enum_history; |
1382 | enumerator_history *next; | |
25d8f0a2 TS |
1383 | |
1384 | while (current != NULL) | |
1385 | { | |
1386 | next = current->next; | |
cede9502 | 1387 | free (current); |
25d8f0a2 TS |
1388 | current = next; |
1389 | } | |
1390 | max_enum = NULL; | |
1391 | enum_history = NULL; | |
1392 | } | |
1393 | ||
1394 | ||
6de9cd9a DN |
1395 | /* Function called by variable_decl() that adds an initialization |
1396 | expression to a symbol. */ | |
1397 | ||
524af0d6 | 1398 | static bool |
66e4ab31 | 1399 | add_init_expr_to_sym (const char *name, gfc_expr **initp, locus *var_locus) |
6de9cd9a DN |
1400 | { |
1401 | symbol_attribute attr; | |
1402 | gfc_symbol *sym; | |
1403 | gfc_expr *init; | |
1404 | ||
1405 | init = *initp; | |
08a6b8e0 | 1406 | if (find_special (name, &sym, false)) |
524af0d6 | 1407 | return false; |
6de9cd9a DN |
1408 | |
1409 | attr = sym->attr; | |
1410 | ||
1411 | /* If this symbol is confirming an implicit parameter type, | |
1412 | then an initialization expression is not allowed. */ | |
1413 | if (attr.flavor == FL_PARAMETER | |
1414 | && sym->value != NULL | |
1415 | && *initp != NULL) | |
1416 | { | |
c4100eae | 1417 | gfc_error ("Initializer not allowed for PARAMETER %qs at %C", |
6de9cd9a | 1418 | sym->name); |
524af0d6 | 1419 | return false; |
6de9cd9a DN |
1420 | } |
1421 | ||
1422 | if (init == NULL) | |
1423 | { | |
1424 | /* An initializer is required for PARAMETER declarations. */ | |
1425 | if (attr.flavor == FL_PARAMETER) | |
1426 | { | |
1427 | gfc_error ("PARAMETER at %L is missing an initializer", var_locus); | |
524af0d6 | 1428 | return false; |
6de9cd9a DN |
1429 | } |
1430 | } | |
1431 | else | |
1432 | { | |
1433 | /* If a variable appears in a DATA block, it cannot have an | |
1de8a836 | 1434 | initializer. */ |
6de9cd9a DN |
1435 | if (sym->attr.data) |
1436 | { | |
c4100eae | 1437 | gfc_error ("Variable %qs at %C with an initializer already " |
636dff67 | 1438 | "appears in a DATA statement", sym->name); |
524af0d6 | 1439 | return false; |
6de9cd9a DN |
1440 | } |
1441 | ||
75d17889 | 1442 | /* Check if the assignment can happen. This has to be put off |
80f95228 | 1443 | until later for derived type variables and procedure pointers. */ |
6de9cd9a | 1444 | if (sym->ts.type != BT_DERIVED && init->ts.type != BT_DERIVED |
cf2b3c22 | 1445 | && sym->ts.type != BT_CLASS && init->ts.type != BT_CLASS |
f5acf0f2 | 1446 | && !sym->attr.proc_pointer |
524af0d6 JB |
1447 | && !gfc_check_assign_symbol (sym, NULL, init)) |
1448 | return false; | |
6de9cd9a | 1449 | |
bc21d315 | 1450 | if (sym->ts.type == BT_CHARACTER && sym->ts.u.cl |
51b128a0 | 1451 | && init->ts.type == BT_CHARACTER) |
df7cc9b5 FW |
1452 | { |
1453 | /* Update symbol character length according initializer. */ | |
524af0d6 JB |
1454 | if (!gfc_check_assign_symbol (sym, NULL, init)) |
1455 | return false; | |
51b128a0 | 1456 | |
bc21d315 | 1457 | if (sym->ts.u.cl->length == NULL) |
df7cc9b5 | 1458 | { |
a99288e5 | 1459 | int clen; |
66e4ab31 SK |
1460 | /* If there are multiple CHARACTER variables declared on the |
1461 | same line, we don't want them to share the same length. */ | |
b76e28c6 | 1462 | sym->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
96f4873b | 1463 | |
a99288e5 PT |
1464 | if (sym->attr.flavor == FL_PARAMETER) |
1465 | { | |
1466 | if (init->expr_type == EXPR_CONSTANT) | |
1467 | { | |
1468 | clen = init->value.character.length; | |
b7e75771 JD |
1469 | sym->ts.u.cl->length |
1470 | = gfc_get_int_expr (gfc_default_integer_kind, | |
1471 | NULL, clen); | |
a99288e5 PT |
1472 | } |
1473 | else if (init->expr_type == EXPR_ARRAY) | |
1474 | { | |
dc0f176a SK |
1475 | if (init->ts.u.cl) |
1476 | clen = mpz_get_si (init->ts.u.cl->length->value.integer); | |
1477 | else if (init->value.constructor) | |
1478 | { | |
1479 | gfc_constructor *c; | |
1480 | c = gfc_constructor_first (init->value.constructor); | |
1481 | clen = c->expr->value.character.length; | |
1482 | } | |
1483 | else | |
1484 | gcc_unreachable (); | |
b7e75771 JD |
1485 | sym->ts.u.cl->length |
1486 | = gfc_get_int_expr (gfc_default_integer_kind, | |
1487 | NULL, clen); | |
a99288e5 | 1488 | } |
bc21d315 JW |
1489 | else if (init->ts.u.cl && init->ts.u.cl->length) |
1490 | sym->ts.u.cl->length = | |
1491 | gfc_copy_expr (sym->value->ts.u.cl->length); | |
a99288e5 | 1492 | } |
df7cc9b5 FW |
1493 | } |
1494 | /* Update initializer character length according symbol. */ | |
bc21d315 | 1495 | else if (sym->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
df7cc9b5 | 1496 | { |
d30ecc9c SK |
1497 | int len; |
1498 | ||
1499 | if (!gfc_specification_expr (sym->ts.u.cl->length)) | |
1500 | return false; | |
1501 | ||
1502 | len = mpz_get_si (sym->ts.u.cl->length->value.integer); | |
df7cc9b5 FW |
1503 | |
1504 | if (init->expr_type == EXPR_CONSTANT) | |
d2848082 | 1505 | gfc_set_constant_character_len (len, init, -1); |
df7cc9b5 FW |
1506 | else if (init->expr_type == EXPR_ARRAY) |
1507 | { | |
b7e75771 JD |
1508 | gfc_constructor *c; |
1509 | ||
dcdc7b6c PT |
1510 | /* Build a new charlen to prevent simplification from |
1511 | deleting the length before it is resolved. */ | |
b76e28c6 | 1512 | init->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
bc21d315 | 1513 | init->ts.u.cl->length = gfc_copy_expr (sym->ts.u.cl->length); |
dcdc7b6c | 1514 | |
b7e75771 JD |
1515 | for (c = gfc_constructor_first (init->value.constructor); |
1516 | c; c = gfc_constructor_next (c)) | |
1517 | gfc_set_constant_character_len (len, c->expr, -1); | |
df7cc9b5 FW |
1518 | } |
1519 | } | |
1520 | } | |
1521 | ||
f5ca06e6 DK |
1522 | /* If sym is implied-shape, set its upper bounds from init. */ |
1523 | if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension | |
1524 | && sym->as->type == AS_IMPLIED_SHAPE) | |
1525 | { | |
1526 | int dim; | |
1527 | ||
1528 | if (init->rank == 0) | |
1529 | { | |
1530 | gfc_error ("Can't initialize implied-shape array at %L" | |
1531 | " with scalar", &sym->declared_at); | |
524af0d6 | 1532 | return false; |
f5ca06e6 | 1533 | } |
f5ca06e6 DK |
1534 | |
1535 | /* Shape should be present, we get an initialization expression. */ | |
1536 | gcc_assert (init->shape); | |
1537 | ||
1538 | for (dim = 0; dim < sym->as->rank; ++dim) | |
1539 | { | |
1540 | int k; | |
cdffe788 | 1541 | gfc_expr *e, *lower; |
f5acf0f2 | 1542 | |
f5ca06e6 | 1543 | lower = sym->as->lower[dim]; |
cdffe788 SK |
1544 | |
1545 | /* If the lower bound is an array element from another | |
1546 | parameterized array, then it is marked with EXPR_VARIABLE and | |
1547 | is an initialization expression. Try to reduce it. */ | |
1548 | if (lower->expr_type == EXPR_VARIABLE) | |
1549 | gfc_reduce_init_expr (lower); | |
1550 | ||
1551 | if (lower->expr_type == EXPR_CONSTANT) | |
1552 | { | |
1553 | /* All dimensions must be without upper bound. */ | |
1554 | gcc_assert (!sym->as->upper[dim]); | |
1555 | ||
1556 | k = lower->ts.kind; | |
1557 | e = gfc_get_constant_expr (BT_INTEGER, k, &sym->declared_at); | |
1558 | mpz_add (e->value.integer, lower->value.integer, | |
1559 | init->shape[dim]); | |
1560 | mpz_sub_ui (e->value.integer, e->value.integer, 1); | |
1561 | sym->as->upper[dim] = e; | |
1562 | } | |
1563 | else | |
f5ca06e6 DK |
1564 | { |
1565 | gfc_error ("Non-constant lower bound in implied-shape" | |
1566 | " declaration at %L", &lower->where); | |
524af0d6 | 1567 | return false; |
f5ca06e6 | 1568 | } |
f5ca06e6 DK |
1569 | } |
1570 | ||
1571 | sym->as->type = AS_EXPLICIT; | |
1572 | } | |
1573 | ||
a8b3b0b6 CR |
1574 | /* Need to check if the expression we initialized this |
1575 | to was one of the iso_c_binding named constants. If so, | |
1576 | and we're a parameter (constant), let it be iso_c. | |
1577 | For example: | |
1578 | integer(c_int), parameter :: my_int = c_int | |
1579 | integer(my_int) :: my_int_2 | |
1580 | If we mark my_int as iso_c (since we can see it's value | |
1581 | is equal to one of the named constants), then my_int_2 | |
1582 | will be considered C interoperable. */ | |
1583 | if (sym->ts.type != BT_CHARACTER && sym->ts.type != BT_DERIVED) | |
1584 | { | |
1585 | sym->ts.is_iso_c |= init->ts.is_iso_c; | |
1586 | sym->ts.is_c_interop |= init->ts.is_c_interop; | |
1587 | /* attr bits needed for module files. */ | |
1588 | sym->attr.is_iso_c |= init->ts.is_iso_c; | |
1589 | sym->attr.is_c_interop |= init->ts.is_c_interop; | |
1590 | if (init->ts.is_iso_c) | |
1591 | sym->ts.f90_type = init->ts.f90_type; | |
1592 | } | |
b7e75771 | 1593 | |
6de9cd9a DN |
1594 | /* Add initializer. Make sure we keep the ranks sane. */ |
1595 | if (sym->attr.dimension && init->rank == 0) | |
a9b43781 PT |
1596 | { |
1597 | mpz_t size; | |
1598 | gfc_expr *array; | |
a9b43781 PT |
1599 | int n; |
1600 | if (sym->attr.flavor == FL_PARAMETER | |
1601 | && init->expr_type == EXPR_CONSTANT | |
524af0d6 | 1602 | && spec_size (sym->as, &size) |
a9b43781 PT |
1603 | && mpz_cmp_si (size, 0) > 0) |
1604 | { | |
b7e75771 JD |
1605 | array = gfc_get_array_expr (init->ts.type, init->ts.kind, |
1606 | &init->where); | |
a9b43781 | 1607 | for (n = 0; n < (int)mpz_get_si (size); n++) |
b7e75771 JD |
1608 | gfc_constructor_append_expr (&array->value.constructor, |
1609 | n == 0 | |
1610 | ? init | |
1611 | : gfc_copy_expr (init), | |
1612 | &init->where); | |
f5acf0f2 | 1613 | |
a9b43781 PT |
1614 | array->shape = gfc_get_shape (sym->as->rank); |
1615 | for (n = 0; n < sym->as->rank; n++) | |
1616 | spec_dimen_size (sym->as, n, &array->shape[n]); | |
1617 | ||
1618 | init = array; | |
1619 | mpz_clear (size); | |
1620 | } | |
1621 | init->rank = sym->as->rank; | |
1622 | } | |
6de9cd9a DN |
1623 | |
1624 | sym->value = init; | |
ef7236d2 DF |
1625 | if (sym->attr.save == SAVE_NONE) |
1626 | sym->attr.save = SAVE_IMPLICIT; | |
6de9cd9a DN |
1627 | *initp = NULL; |
1628 | } | |
1629 | ||
524af0d6 | 1630 | return true; |
6de9cd9a DN |
1631 | } |
1632 | ||
1633 | ||
1634 | /* Function called by variable_decl() that adds a name to a structure | |
1635 | being built. */ | |
1636 | ||
524af0d6 | 1637 | static bool |
636dff67 SK |
1638 | build_struct (const char *name, gfc_charlen *cl, gfc_expr **init, |
1639 | gfc_array_spec **as) | |
6de9cd9a DN |
1640 | { |
1641 | gfc_component *c; | |
524af0d6 | 1642 | bool t = true; |
6de9cd9a | 1643 | |
619dd721 | 1644 | /* F03:C438/C439. If the current symbol is of the same derived type that we're |
6de9cd9a | 1645 | constructing, it must have the pointer attribute. */ |
619dd721 | 1646 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
bc21d315 | 1647 | && current_ts.u.derived == gfc_current_block () |
6de9cd9a DN |
1648 | && current_attr.pointer == 0) |
1649 | { | |
1650 | gfc_error ("Component at %C must have the POINTER attribute"); | |
524af0d6 | 1651 | return false; |
6de9cd9a DN |
1652 | } |
1653 | ||
636dff67 | 1654 | if (gfc_current_block ()->attr.pointer && (*as)->rank != 0) |
6de9cd9a DN |
1655 | { |
1656 | if ((*as)->type != AS_DEFERRED && (*as)->type != AS_EXPLICIT) | |
1657 | { | |
1658 | gfc_error ("Array component of structure at %C must have explicit " | |
1659 | "or deferred shape"); | |
524af0d6 | 1660 | return false; |
6de9cd9a DN |
1661 | } |
1662 | } | |
1663 | ||
524af0d6 JB |
1664 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
1665 | return false; | |
6de9cd9a DN |
1666 | |
1667 | c->ts = current_ts; | |
bc21d315 JW |
1668 | if (c->ts.type == BT_CHARACTER) |
1669 | c->ts.u.cl = cl; | |
d4b7d0f0 | 1670 | c->attr = current_attr; |
6de9cd9a DN |
1671 | |
1672 | c->initializer = *init; | |
1673 | *init = NULL; | |
1674 | ||
1675 | c->as = *as; | |
1676 | if (c->as != NULL) | |
be59db2d TB |
1677 | { |
1678 | if (c->as->corank) | |
1679 | c->attr.codimension = 1; | |
1680 | if (c->as->rank) | |
1681 | c->attr.dimension = 1; | |
1682 | } | |
6de9cd9a DN |
1683 | *as = NULL; |
1684 | ||
28d08315 PT |
1685 | /* Should this ever get more complicated, combine with similar section |
1686 | in add_init_expr_to_sym into a separate function. */ | |
f4347334 ZG |
1687 | if (c->ts.type == BT_CHARACTER && !c->attr.pointer && c->initializer |
1688 | && c->ts.u.cl | |
bc21d315 | 1689 | && c->ts.u.cl->length && c->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
28d08315 | 1690 | { |
d2848082 DK |
1691 | int len; |
1692 | ||
bc21d315 JW |
1693 | gcc_assert (c->ts.u.cl && c->ts.u.cl->length); |
1694 | gcc_assert (c->ts.u.cl->length->expr_type == EXPR_CONSTANT); | |
1695 | gcc_assert (c->ts.u.cl->length->ts.type == BT_INTEGER); | |
d2848082 | 1696 | |
bc21d315 | 1697 | len = mpz_get_si (c->ts.u.cl->length->value.integer); |
28d08315 PT |
1698 | |
1699 | if (c->initializer->expr_type == EXPR_CONSTANT) | |
d2848082 | 1700 | gfc_set_constant_character_len (len, c->initializer, -1); |
bc21d315 JW |
1701 | else if (mpz_cmp (c->ts.u.cl->length->value.integer, |
1702 | c->initializer->ts.u.cl->length->value.integer)) | |
28d08315 | 1703 | { |
b7e75771 JD |
1704 | gfc_constructor *ctor; |
1705 | ctor = gfc_constructor_first (c->initializer->value.constructor); | |
d2848082 | 1706 | |
2f4d1994 | 1707 | if (ctor) |
d2848082 | 1708 | { |
2f4d1994 | 1709 | int first_len; |
b7e75771 JD |
1710 | bool has_ts = (c->initializer->ts.u.cl |
1711 | && c->initializer->ts.u.cl->length_from_typespec); | |
2f4d1994 ILT |
1712 | |
1713 | /* Remember the length of the first element for checking | |
1714 | that all elements *in the constructor* have the same | |
1715 | length. This need not be the length of the LHS! */ | |
1716 | gcc_assert (ctor->expr->expr_type == EXPR_CONSTANT); | |
1717 | gcc_assert (ctor->expr->ts.type == BT_CHARACTER); | |
1718 | first_len = ctor->expr->value.character.length; | |
1719 | ||
b7e75771 JD |
1720 | for ( ; ctor; ctor = gfc_constructor_next (ctor)) |
1721 | if (ctor->expr->expr_type == EXPR_CONSTANT) | |
d2848082 | 1722 | { |
b7e75771 JD |
1723 | gfc_set_constant_character_len (len, ctor->expr, |
1724 | has_ts ? -1 : first_len); | |
1725 | ctor->expr->ts.u.cl->length = gfc_copy_expr (c->ts.u.cl->length); | |
d2848082 | 1726 | } |
d2848082 | 1727 | } |
28d08315 PT |
1728 | } |
1729 | } | |
1730 | ||
6de9cd9a | 1731 | /* Check array components. */ |
d4b7d0f0 | 1732 | if (!c->attr.dimension) |
2e23972e | 1733 | goto scalar; |
6de9cd9a | 1734 | |
d4b7d0f0 | 1735 | if (c->attr.pointer) |
6de9cd9a DN |
1736 | { |
1737 | if (c->as->type != AS_DEFERRED) | |
1738 | { | |
5046aff5 PT |
1739 | gfc_error ("Pointer array component of structure at %C must have a " |
1740 | "deferred shape"); | |
524af0d6 | 1741 | t = false; |
5046aff5 PT |
1742 | } |
1743 | } | |
d4b7d0f0 | 1744 | else if (c->attr.allocatable) |
5046aff5 PT |
1745 | { |
1746 | if (c->as->type != AS_DEFERRED) | |
1747 | { | |
1748 | gfc_error ("Allocatable component of structure at %C must have a " | |
1749 | "deferred shape"); | |
524af0d6 | 1750 | t = false; |
6de9cd9a DN |
1751 | } |
1752 | } | |
1753 | else | |
1754 | { | |
1755 | if (c->as->type != AS_EXPLICIT) | |
1756 | { | |
636dff67 SK |
1757 | gfc_error ("Array component of structure at %C must have an " |
1758 | "explicit shape"); | |
524af0d6 | 1759 | t = false; |
6de9cd9a DN |
1760 | } |
1761 | } | |
1762 | ||
2e23972e JW |
1763 | scalar: |
1764 | if (c->ts.type == BT_CLASS) | |
17643884 | 1765 | { |
9b6da3c7 | 1766 | bool t2 = gfc_build_class_symbol (&c->ts, &c->attr, &c->as); |
ea59b186 | 1767 | |
524af0d6 | 1768 | if (t) |
ea59b186 | 1769 | t = t2; |
17643884 JW |
1770 | } |
1771 | ||
2e23972e | 1772 | return t; |
6de9cd9a DN |
1773 | } |
1774 | ||
1775 | ||
1776 | /* Match a 'NULL()', and possibly take care of some side effects. */ | |
1777 | ||
1778 | match | |
636dff67 | 1779 | gfc_match_null (gfc_expr **result) |
6de9cd9a DN |
1780 | { |
1781 | gfc_symbol *sym; | |
576f6da6 | 1782 | match m, m2 = MATCH_NO; |
6de9cd9a | 1783 | |
576f6da6 TB |
1784 | if ((m = gfc_match (" null ( )")) == MATCH_ERROR) |
1785 | return MATCH_ERROR; | |
1786 | ||
1787 | if (m == MATCH_NO) | |
1788 | { | |
1789 | locus old_loc; | |
1790 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
1791 | ||
94241120 | 1792 | if ((m2 = gfc_match (" null (")) != MATCH_YES) |
576f6da6 TB |
1793 | return m2; |
1794 | ||
1795 | old_loc = gfc_current_locus; | |
1796 | if ((m2 = gfc_match (" %n ) ", name)) == MATCH_ERROR) | |
1797 | return MATCH_ERROR; | |
1798 | if (m2 != MATCH_YES | |
1799 | && ((m2 = gfc_match (" mold = %n )", name)) == MATCH_ERROR)) | |
1800 | return MATCH_ERROR; | |
1801 | if (m2 == MATCH_NO) | |
1802 | { | |
1803 | gfc_current_locus = old_loc; | |
1804 | return MATCH_NO; | |
1805 | } | |
1806 | } | |
6de9cd9a DN |
1807 | |
1808 | /* The NULL symbol now has to be/become an intrinsic function. */ | |
1809 | if (gfc_get_symbol ("null", NULL, &sym)) | |
1810 | { | |
1811 | gfc_error ("NULL() initialization at %C is ambiguous"); | |
1812 | return MATCH_ERROR; | |
1813 | } | |
1814 | ||
1815 | gfc_intrinsic_symbol (sym); | |
1816 | ||
1817 | if (sym->attr.proc != PROC_INTRINSIC | |
07416986 | 1818 | && !(sym->attr.use_assoc && sym->attr.intrinsic) |
524af0d6 JB |
1819 | && (!gfc_add_procedure(&sym->attr, PROC_INTRINSIC, sym->name, NULL) |
1820 | || !gfc_add_function (&sym->attr, sym->name, NULL))) | |
6de9cd9a DN |
1821 | return MATCH_ERROR; |
1822 | ||
b7e75771 | 1823 | *result = gfc_get_null_expr (&gfc_current_locus); |
6de9cd9a | 1824 | |
576f6da6 TB |
1825 | /* Invalid per F2008, C512. */ |
1826 | if (m2 == MATCH_YES) | |
1827 | { | |
1828 | gfc_error ("NULL() initialization at %C may not have MOLD"); | |
1829 | return MATCH_ERROR; | |
1830 | } | |
1831 | ||
6de9cd9a DN |
1832 | return MATCH_YES; |
1833 | } | |
1834 | ||
1835 | ||
80f95228 JW |
1836 | /* Match the initialization expr for a data pointer or procedure pointer. */ |
1837 | ||
1838 | static match | |
1839 | match_pointer_init (gfc_expr **init, int procptr) | |
1840 | { | |
1841 | match m; | |
1842 | ||
1843 | if (gfc_pure (NULL) && gfc_state_stack->state != COMP_DERIVED) | |
1844 | { | |
1845 | gfc_error ("Initialization of pointer at %C is not allowed in " | |
1846 | "a PURE procedure"); | |
1847 | return MATCH_ERROR; | |
1848 | } | |
ccd7751b | 1849 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
80f95228 | 1850 | |
eea58adb | 1851 | /* Match NULL() initialization. */ |
80f95228 JW |
1852 | m = gfc_match_null (init); |
1853 | if (m != MATCH_NO) | |
1854 | return m; | |
1855 | ||
1856 | /* Match non-NULL initialization. */ | |
837c4b78 | 1857 | gfc_matching_ptr_assignment = !procptr; |
80f95228 JW |
1858 | gfc_matching_procptr_assignment = procptr; |
1859 | m = gfc_match_rvalue (init); | |
837c4b78 | 1860 | gfc_matching_ptr_assignment = 0; |
80f95228 JW |
1861 | gfc_matching_procptr_assignment = 0; |
1862 | if (m == MATCH_ERROR) | |
1863 | return MATCH_ERROR; | |
1864 | else if (m == MATCH_NO) | |
1865 | { | |
1866 | gfc_error ("Error in pointer initialization at %C"); | |
1867 | return MATCH_ERROR; | |
1868 | } | |
1869 | ||
dc9a54fa JW |
1870 | if (!procptr && !gfc_resolve_expr (*init)) |
1871 | return MATCH_ERROR; | |
f5acf0f2 | 1872 | |
524af0d6 JB |
1873 | if (!gfc_notify_std (GFC_STD_F2008, "non-NULL pointer " |
1874 | "initialization at %C")) | |
80f95228 JW |
1875 | return MATCH_ERROR; |
1876 | ||
1877 | return MATCH_YES; | |
1878 | } | |
1879 | ||
1880 | ||
524af0d6 | 1881 | static bool |
bb9de0c4 JW |
1882 | check_function_name (char *name) |
1883 | { | |
1884 | /* In functions that have a RESULT variable defined, the function name always | |
1885 | refers to function calls. Therefore, the name is not allowed to appear in | |
1886 | specification statements. When checking this, be careful about | |
1887 | 'hidden' procedure pointer results ('ppr@'). */ | |
1888 | ||
1889 | if (gfc_current_state () == COMP_FUNCTION) | |
1890 | { | |
1891 | gfc_symbol *block = gfc_current_block (); | |
1892 | if (block && block->result && block->result != block | |
1893 | && strcmp (block->result->name, "ppr@") != 0 | |
1894 | && strcmp (block->name, name) == 0) | |
1895 | { | |
c4100eae | 1896 | gfc_error ("Function name %qs not allowed at %C", name); |
524af0d6 | 1897 | return false; |
bb9de0c4 JW |
1898 | } |
1899 | } | |
1900 | ||
524af0d6 | 1901 | return true; |
bb9de0c4 JW |
1902 | } |
1903 | ||
1904 | ||
6de9cd9a DN |
1905 | /* Match a variable name with an optional initializer. When this |
1906 | subroutine is called, a variable is expected to be parsed next. | |
1907 | Depending on what is happening at the moment, updates either the | |
1908 | symbol table or the current interface. */ | |
1909 | ||
1910 | static match | |
949d5b72 | 1911 | variable_decl (int elem) |
6de9cd9a DN |
1912 | { |
1913 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
1914 | gfc_expr *initializer, *char_len; | |
1915 | gfc_array_spec *as; | |
83d890b9 | 1916 | gfc_array_spec *cp_as; /* Extra copy for Cray Pointees. */ |
6de9cd9a | 1917 | gfc_charlen *cl; |
e69afb29 | 1918 | bool cl_deferred; |
6de9cd9a DN |
1919 | locus var_locus; |
1920 | match m; | |
524af0d6 | 1921 | bool t; |
83d890b9 | 1922 | gfc_symbol *sym; |
6de9cd9a DN |
1923 | |
1924 | initializer = NULL; | |
1925 | as = NULL; | |
83d890b9 | 1926 | cp_as = NULL; |
6de9cd9a DN |
1927 | |
1928 | /* When we get here, we've just matched a list of attributes and | |
1929 | maybe a type and a double colon. The next thing we expect to see | |
1930 | is the name of the symbol. */ | |
1931 | m = gfc_match_name (name); | |
1932 | if (m != MATCH_YES) | |
1933 | goto cleanup; | |
1934 | ||
63645982 | 1935 | var_locus = gfc_current_locus; |
6de9cd9a DN |
1936 | |
1937 | /* Now we could see the optional array spec. or character length. */ | |
be59db2d | 1938 | m = gfc_match_array_spec (&as, true, true); |
11126dc0 | 1939 | if (m == MATCH_ERROR) |
6de9cd9a | 1940 | goto cleanup; |
25d8f0a2 | 1941 | |
6de9cd9a DN |
1942 | if (m == MATCH_NO) |
1943 | as = gfc_copy_array_spec (current_as); | |
63fbf586 | 1944 | else if (current_as |
524af0d6 | 1945 | && !merge_array_spec (current_as, as, true)) |
63fbf586 TB |
1946 | { |
1947 | m = MATCH_ERROR; | |
1948 | goto cleanup; | |
1949 | } | |
6de9cd9a | 1950 | |
c61819ff | 1951 | if (flag_cray_pointer) |
11126dc0 AL |
1952 | cp_as = gfc_copy_array_spec (as); |
1953 | ||
f5ca06e6 DK |
1954 | /* At this point, we know for sure if the symbol is PARAMETER and can thus |
1955 | determine (and check) whether it can be implied-shape. If it | |
1956 | was parsed as assumed-size, change it because PARAMETERs can not | |
1957 | be assumed-size. */ | |
1958 | if (as) | |
1959 | { | |
1960 | if (as->type == AS_IMPLIED_SHAPE && current_attr.flavor != FL_PARAMETER) | |
1961 | { | |
1962 | m = MATCH_ERROR; | |
c4100eae | 1963 | gfc_error ("Non-PARAMETER symbol %qs at %L can't be implied-shape", |
f5ca06e6 DK |
1964 | name, &var_locus); |
1965 | goto cleanup; | |
1966 | } | |
1967 | ||
1968 | if (as->type == AS_ASSUMED_SIZE && as->rank == 1 | |
1969 | && current_attr.flavor == FL_PARAMETER) | |
1970 | as->type = AS_IMPLIED_SHAPE; | |
1971 | ||
1972 | if (as->type == AS_IMPLIED_SHAPE | |
524af0d6 JB |
1973 | && !gfc_notify_std (GFC_STD_F2008, "Implied-shape array at %L", |
1974 | &var_locus)) | |
f5ca06e6 DK |
1975 | { |
1976 | m = MATCH_ERROR; | |
1977 | goto cleanup; | |
1978 | } | |
1979 | } | |
1980 | ||
6de9cd9a DN |
1981 | char_len = NULL; |
1982 | cl = NULL; | |
e69afb29 | 1983 | cl_deferred = false; |
6de9cd9a DN |
1984 | |
1985 | if (current_ts.type == BT_CHARACTER) | |
1986 | { | |
2767f2cc | 1987 | switch (match_char_length (&char_len, &cl_deferred, false)) |
6de9cd9a DN |
1988 | { |
1989 | case MATCH_YES: | |
b76e28c6 | 1990 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
1991 | |
1992 | cl->length = char_len; | |
1993 | break; | |
1994 | ||
949d5b72 | 1995 | /* Non-constant lengths need to be copied after the first |
9b21a380 | 1996 | element. Also copy assumed lengths. */ |
6de9cd9a | 1997 | case MATCH_NO: |
9b21a380 | 1998 | if (elem > 1 |
bc21d315 JW |
1999 | && (current_ts.u.cl->length == NULL |
2000 | || current_ts.u.cl->length->expr_type != EXPR_CONSTANT)) | |
949d5b72 | 2001 | { |
b76e28c6 | 2002 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
bc21d315 | 2003 | cl->length = gfc_copy_expr (current_ts.u.cl->length); |
949d5b72 PT |
2004 | } |
2005 | else | |
bc21d315 | 2006 | cl = current_ts.u.cl; |
949d5b72 | 2007 | |
e69afb29 SK |
2008 | cl_deferred = current_ts.deferred; |
2009 | ||
6de9cd9a DN |
2010 | break; |
2011 | ||
2012 | case MATCH_ERROR: | |
2013 | goto cleanup; | |
2014 | } | |
2015 | } | |
2016 | ||
4668d6f9 PT |
2017 | /* The dummy arguments and result of the abreviated form of MODULE |
2018 | PROCEDUREs, used in SUBMODULES should not be redefined. */ | |
2019 | if (gfc_current_ns->proc_name | |
2020 | && gfc_current_ns->proc_name->abr_modproc_decl) | |
2021 | { | |
2022 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2023 | if (sym != NULL && (sym->attr.dummy || sym->attr.result)) | |
2024 | { | |
2025 | m = MATCH_ERROR; | |
811582ec | 2026 | gfc_error ("%qs at %C is a redefinition of the declaration " |
4668d6f9 | 2027 | "in the corresponding interface for MODULE " |
811582ec | 2028 | "PROCEDURE %qs", sym->name, |
4668d6f9 PT |
2029 | gfc_current_ns->proc_name->name); |
2030 | goto cleanup; | |
2031 | } | |
2032 | } | |
2033 | ||
83d890b9 | 2034 | /* If this symbol has already shown up in a Cray Pointer declaration, |
88f7d6fb | 2035 | and this is not a component declaration, |
66e4ab31 | 2036 | then we want to set the type & bail out. */ |
c61819ff | 2037 | if (flag_cray_pointer && gfc_current_state () != COMP_DERIVED) |
83d890b9 AL |
2038 | { |
2039 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2040 | if (sym != NULL && sym->attr.cray_pointee) | |
2041 | { | |
2042 | sym->ts.type = current_ts.type; | |
2043 | sym->ts.kind = current_ts.kind; | |
bc21d315 JW |
2044 | sym->ts.u.cl = cl; |
2045 | sym->ts.u.derived = current_ts.u.derived; | |
a8b3b0b6 CR |
2046 | sym->ts.is_c_interop = current_ts.is_c_interop; |
2047 | sym->ts.is_iso_c = current_ts.is_iso_c; | |
83d890b9 | 2048 | m = MATCH_YES; |
f5acf0f2 | 2049 | |
83d890b9 AL |
2050 | /* Check to see if we have an array specification. */ |
2051 | if (cp_as != NULL) | |
2052 | { | |
2053 | if (sym->as != NULL) | |
2054 | { | |
e25a0da3 | 2055 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
2056 | gfc_free_array_spec (cp_as); |
2057 | m = MATCH_ERROR; | |
2058 | goto cleanup; | |
2059 | } | |
2060 | else | |
2061 | { | |
524af0d6 | 2062 | if (!gfc_set_array_spec (sym, cp_as, &var_locus)) |
83d890b9 | 2063 | gfc_internal_error ("Couldn't set pointee array spec."); |
d51347f9 | 2064 | |
83d890b9 | 2065 | /* Fix the array spec. */ |
d51347f9 | 2066 | m = gfc_mod_pointee_as (sym->as); |
83d890b9 AL |
2067 | if (m == MATCH_ERROR) |
2068 | goto cleanup; | |
2069 | } | |
d51347f9 | 2070 | } |
83d890b9 AL |
2071 | goto cleanup; |
2072 | } | |
2073 | else | |
2074 | { | |
2075 | gfc_free_array_spec (cp_as); | |
2076 | } | |
2077 | } | |
d51347f9 | 2078 | |
3070bab4 JW |
2079 | /* Procedure pointer as function result. */ |
2080 | if (gfc_current_state () == COMP_FUNCTION | |
2081 | && strcmp ("ppr@", gfc_current_block ()->name) == 0 | |
2082 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) == 0) | |
2083 | strcpy (name, "ppr@"); | |
2084 | ||
2085 | if (gfc_current_state () == COMP_FUNCTION | |
2086 | && strcmp (name, gfc_current_block ()->name) == 0 | |
2087 | && gfc_current_block ()->result | |
2088 | && strcmp ("ppr@", gfc_current_block ()->result->name) == 0) | |
2089 | strcpy (name, "ppr@"); | |
d51347f9 | 2090 | |
6de9cd9a DN |
2091 | /* OK, we've successfully matched the declaration. Now put the |
2092 | symbol in the current namespace, because it might be used in the | |
69de3b83 | 2093 | optional initialization expression for this symbol, e.g. this is |
6de9cd9a DN |
2094 | perfectly legal: |
2095 | ||
2096 | integer, parameter :: i = huge(i) | |
2097 | ||
2098 | This is only true for parameters or variables of a basic type. | |
2099 | For components of derived types, it is not true, so we don't | |
2100 | create a symbol for those yet. If we fail to create the symbol, | |
2101 | bail out. */ | |
2102 | if (gfc_current_state () != COMP_DERIVED | |
524af0d6 | 2103 | && !build_sym (name, cl, cl_deferred, &as, &var_locus)) |
6de9cd9a | 2104 | { |
72af9f0b PT |
2105 | m = MATCH_ERROR; |
2106 | goto cleanup; | |
2107 | } | |
2108 | ||
524af0d6 | 2109 | if (!check_function_name (name)) |
6de9cd9a | 2110 | { |
6de9cd9a DN |
2111 | m = MATCH_ERROR; |
2112 | goto cleanup; | |
2113 | } | |
2114 | ||
294fbfc8 TS |
2115 | /* We allow old-style initializations of the form |
2116 | integer i /2/, j(4) /3*3, 1/ | |
2117 | (if no colon has been seen). These are different from data | |
2118 | statements in that initializers are only allowed to apply to the | |
2119 | variable immediately preceding, i.e. | |
2120 | integer i, j /1, 2/ | |
2121 | is not allowed. Therefore we have to do some work manually, that | |
75d17889 | 2122 | could otherwise be left to the matchers for DATA statements. */ |
294fbfc8 TS |
2123 | |
2124 | if (!colon_seen && gfc_match (" /") == MATCH_YES) | |
2125 | { | |
524af0d6 JB |
2126 | if (!gfc_notify_std (GFC_STD_GNU, "Old-style " |
2127 | "initialization at %C")) | |
294fbfc8 | 2128 | return MATCH_ERROR; |
b18f1efc JJ |
2129 | else if (gfc_current_state () == COMP_DERIVED) |
2130 | { | |
2131 | gfc_error ("Invalid old style initialization for derived type " | |
2132 | "component at %C"); | |
2133 | m = MATCH_ERROR; | |
2134 | goto cleanup; | |
2135 | } | |
f5acf0f2 | 2136 | |
294fbfc8 TS |
2137 | return match_old_style_init (name); |
2138 | } | |
2139 | ||
6de9cd9a DN |
2140 | /* The double colon must be present in order to have initializers. |
2141 | Otherwise the statement is ambiguous with an assignment statement. */ | |
2142 | if (colon_seen) | |
2143 | { | |
2144 | if (gfc_match (" =>") == MATCH_YES) | |
2145 | { | |
6de9cd9a DN |
2146 | if (!current_attr.pointer) |
2147 | { | |
2148 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
2149 | m = MATCH_ERROR; | |
2150 | goto cleanup; | |
2151 | } | |
2152 | ||
80f95228 | 2153 | m = match_pointer_init (&initializer, 0); |
6de9cd9a DN |
2154 | if (m != MATCH_YES) |
2155 | goto cleanup; | |
6de9cd9a DN |
2156 | } |
2157 | else if (gfc_match_char ('=') == MATCH_YES) | |
2158 | { | |
2159 | if (current_attr.pointer) | |
2160 | { | |
a4d9b221 TB |
2161 | gfc_error ("Pointer initialization at %C requires %<=>%>, " |
2162 | "not %<=%>"); | |
6de9cd9a DN |
2163 | m = MATCH_ERROR; |
2164 | goto cleanup; | |
2165 | } | |
2166 | ||
2167 | m = gfc_match_init_expr (&initializer); | |
2168 | if (m == MATCH_NO) | |
2169 | { | |
2170 | gfc_error ("Expected an initialization expression at %C"); | |
2171 | m = MATCH_ERROR; | |
2172 | } | |
2173 | ||
ade20620 TB |
2174 | if (current_attr.flavor != FL_PARAMETER && gfc_pure (NULL) |
2175 | && gfc_state_stack->state != COMP_DERIVED) | |
6de9cd9a | 2176 | { |
636dff67 SK |
2177 | gfc_error ("Initialization of variable at %C is not allowed in " |
2178 | "a PURE procedure"); | |
6de9cd9a DN |
2179 | m = MATCH_ERROR; |
2180 | } | |
2181 | ||
ccd7751b TB |
2182 | if (current_attr.flavor != FL_PARAMETER |
2183 | && gfc_state_stack->state != COMP_DERIVED) | |
2184 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); | |
2185 | ||
6de9cd9a DN |
2186 | if (m != MATCH_YES) |
2187 | goto cleanup; | |
2188 | } | |
cb44ab82 VL |
2189 | } |
2190 | ||
5046aff5 PT |
2191 | if (initializer != NULL && current_attr.allocatable |
2192 | && gfc_current_state () == COMP_DERIVED) | |
2193 | { | |
636dff67 SK |
2194 | gfc_error ("Initialization of allocatable component at %C is not " |
2195 | "allowed"); | |
5046aff5 PT |
2196 | m = MATCH_ERROR; |
2197 | goto cleanup; | |
2198 | } | |
2199 | ||
54b4ba60 | 2200 | /* Add the initializer. Note that it is fine if initializer is |
6de9cd9a DN |
2201 | NULL here, because we sometimes also need to check if a |
2202 | declaration *must* have an initialization expression. */ | |
2203 | if (gfc_current_state () != COMP_DERIVED) | |
2204 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
2205 | else | |
54b4ba60 | 2206 | { |
5046aff5 | 2207 | if (current_ts.type == BT_DERIVED |
636dff67 | 2208 | && !current_attr.pointer && !initializer) |
54b4ba60 PB |
2209 | initializer = gfc_default_initializer (¤t_ts); |
2210 | t = build_struct (name, cl, &initializer, &as); | |
2211 | } | |
6de9cd9a | 2212 | |
524af0d6 | 2213 | m = (t) ? MATCH_YES : MATCH_ERROR; |
6de9cd9a DN |
2214 | |
2215 | cleanup: | |
2216 | /* Free stuff up and return. */ | |
2217 | gfc_free_expr (initializer); | |
2218 | gfc_free_array_spec (as); | |
2219 | ||
2220 | return m; | |
2221 | } | |
2222 | ||
2223 | ||
b2b81a3f BM |
2224 | /* Match an extended-f77 "TYPESPEC*bytesize"-style kind specification. |
2225 | This assumes that the byte size is equal to the kind number for | |
2226 | non-COMPLEX types, and equal to twice the kind number for COMPLEX. */ | |
6de9cd9a DN |
2227 | |
2228 | match | |
636dff67 | 2229 | gfc_match_old_kind_spec (gfc_typespec *ts) |
6de9cd9a DN |
2230 | { |
2231 | match m; | |
5cf54585 | 2232 | int original_kind; |
6de9cd9a DN |
2233 | |
2234 | if (gfc_match_char ('*') != MATCH_YES) | |
2235 | return MATCH_NO; | |
2236 | ||
5cf54585 | 2237 | m = gfc_match_small_literal_int (&ts->kind, NULL); |
6de9cd9a DN |
2238 | if (m != MATCH_YES) |
2239 | return MATCH_ERROR; | |
2240 | ||
e45b3c75 ES |
2241 | original_kind = ts->kind; |
2242 | ||
6de9cd9a | 2243 | /* Massage the kind numbers for complex types. */ |
e45b3c75 ES |
2244 | if (ts->type == BT_COMPLEX) |
2245 | { | |
2246 | if (ts->kind % 2) | |
636dff67 SK |
2247 | { |
2248 | gfc_error ("Old-style type declaration %s*%d not supported at %C", | |
2249 | gfc_basic_typename (ts->type), original_kind); | |
2250 | return MATCH_ERROR; | |
2251 | } | |
e45b3c75 | 2252 | ts->kind /= 2; |
f4347334 ZG |
2253 | |
2254 | } | |
2255 | ||
203c7ebf | 2256 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
f4347334 ZG |
2257 | ts->kind = 8; |
2258 | ||
2259 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2260 | { | |
2261 | if (ts->kind == 4) | |
2262 | { | |
203c7ebf | 2263 | if (flag_real4_kind == 8) |
f4347334 | 2264 | ts->kind = 8; |
203c7ebf | 2265 | if (flag_real4_kind == 10) |
f4347334 | 2266 | ts->kind = 10; |
203c7ebf | 2267 | if (flag_real4_kind == 16) |
f4347334 ZG |
2268 | ts->kind = 16; |
2269 | } | |
2270 | ||
2271 | if (ts->kind == 8) | |
2272 | { | |
203c7ebf | 2273 | if (flag_real8_kind == 4) |
f4347334 | 2274 | ts->kind = 4; |
203c7ebf | 2275 | if (flag_real8_kind == 10) |
f4347334 | 2276 | ts->kind = 10; |
203c7ebf | 2277 | if (flag_real8_kind == 16) |
f4347334 ZG |
2278 | ts->kind = 16; |
2279 | } | |
e45b3c75 | 2280 | } |
6de9cd9a | 2281 | |
e7a2d5fb | 2282 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a | 2283 | { |
e45b3c75 | 2284 | gfc_error ("Old-style type declaration %s*%d not supported at %C", |
636dff67 | 2285 | gfc_basic_typename (ts->type), original_kind); |
6de9cd9a DN |
2286 | return MATCH_ERROR; |
2287 | } | |
2288 | ||
524af0d6 JB |
2289 | if (!gfc_notify_std (GFC_STD_GNU, |
2290 | "Nonstandard type declaration %s*%d at %C", | |
2291 | gfc_basic_typename(ts->type), original_kind)) | |
df8652dc SK |
2292 | return MATCH_ERROR; |
2293 | ||
6de9cd9a DN |
2294 | return MATCH_YES; |
2295 | } | |
2296 | ||
2297 | ||
2298 | /* Match a kind specification. Since kinds are generally optional, we | |
2299 | usually return MATCH_NO if something goes wrong. If a "kind=" | |
2300 | string is found, then we know we have an error. */ | |
2301 | ||
2302 | match | |
e2d29968 | 2303 | gfc_match_kind_spec (gfc_typespec *ts, bool kind_expr_only) |
6de9cd9a | 2304 | { |
e2d29968 | 2305 | locus where, loc; |
6de9cd9a DN |
2306 | gfc_expr *e; |
2307 | match m, n; | |
96ee3a4a | 2308 | char c; |
6de9cd9a DN |
2309 | const char *msg; |
2310 | ||
2311 | m = MATCH_NO; | |
e2d29968 | 2312 | n = MATCH_YES; |
6de9cd9a DN |
2313 | e = NULL; |
2314 | ||
e2d29968 PT |
2315 | where = loc = gfc_current_locus; |
2316 | ||
2317 | if (kind_expr_only) | |
2318 | goto kind_expr; | |
6de9cd9a DN |
2319 | |
2320 | if (gfc_match_char ('(') == MATCH_NO) | |
2321 | return MATCH_NO; | |
2322 | ||
2323 | /* Also gobbles optional text. */ | |
2324 | if (gfc_match (" kind = ") == MATCH_YES) | |
2325 | m = MATCH_ERROR; | |
2326 | ||
e2d29968 PT |
2327 | loc = gfc_current_locus; |
2328 | ||
2329 | kind_expr: | |
6de9cd9a | 2330 | n = gfc_match_init_expr (&e); |
e2d29968 | 2331 | |
6de9cd9a | 2332 | if (n != MATCH_YES) |
e2d29968 | 2333 | { |
1c8bcdf7 | 2334 | if (gfc_matching_function) |
e2d29968 | 2335 | { |
f5acf0f2 | 2336 | /* The function kind expression might include use associated or |
1c8bcdf7 PT |
2337 | imported parameters and try again after the specification |
2338 | expressions..... */ | |
e2d29968 PT |
2339 | if (gfc_match_char (')') != MATCH_YES) |
2340 | { | |
2341 | gfc_error ("Missing right parenthesis at %C"); | |
2342 | m = MATCH_ERROR; | |
2343 | goto no_match; | |
2344 | } | |
2345 | ||
2346 | gfc_free_expr (e); | |
e2d29968 PT |
2347 | gfc_undo_symbols (); |
2348 | return MATCH_YES; | |
2349 | } | |
2350 | else | |
2351 | { | |
2352 | /* ....or else, the match is real. */ | |
2353 | if (n == MATCH_NO) | |
2354 | gfc_error ("Expected initialization expression at %C"); | |
2355 | if (n != MATCH_YES) | |
2356 | return MATCH_ERROR; | |
2357 | } | |
2358 | } | |
6de9cd9a DN |
2359 | |
2360 | if (e->rank != 0) | |
2361 | { | |
2362 | gfc_error ("Expected scalar initialization expression at %C"); | |
2363 | m = MATCH_ERROR; | |
2364 | goto no_match; | |
2365 | } | |
2366 | ||
2367 | msg = gfc_extract_int (e, &ts->kind); | |
1c8bcdf7 | 2368 | |
6de9cd9a DN |
2369 | if (msg != NULL) |
2370 | { | |
2371 | gfc_error (msg); | |
2372 | m = MATCH_ERROR; | |
2373 | goto no_match; | |
2374 | } | |
2375 | ||
a8b3b0b6 CR |
2376 | /* Before throwing away the expression, let's see if we had a |
2377 | C interoperable kind (and store the fact). */ | |
2378 | if (e->ts.is_c_interop == 1) | |
2379 | { | |
eea58adb | 2380 | /* Mark this as C interoperable if being declared with one |
a8b3b0b6 CR |
2381 | of the named constants from iso_c_binding. */ |
2382 | ts->is_c_interop = e->ts.is_iso_c; | |
2383 | ts->f90_type = e->ts.f90_type; | |
2384 | } | |
f5acf0f2 | 2385 | |
6de9cd9a DN |
2386 | gfc_free_expr (e); |
2387 | e = NULL; | |
2388 | ||
a8b3b0b6 CR |
2389 | /* Ignore errors to this point, if we've gotten here. This means |
2390 | we ignore the m=MATCH_ERROR from above. */ | |
e7a2d5fb | 2391 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
6de9cd9a DN |
2392 | { |
2393 | gfc_error ("Kind %d not supported for type %s at %C", ts->kind, | |
2394 | gfc_basic_typename (ts->type)); | |
96ee3a4a TB |
2395 | gfc_current_locus = where; |
2396 | return MATCH_ERROR; | |
6de9cd9a | 2397 | } |
96ee3a4a | 2398 | |
2ec855f1 TB |
2399 | /* Warn if, e.g., c_int is used for a REAL variable, but not |
2400 | if, e.g., c_double is used for COMPLEX as the standard | |
2401 | explicitly says that the kind type parameter for complex and real | |
2402 | variable is the same, i.e. c_float == c_float_complex. */ | |
2403 | if (ts->f90_type != BT_UNKNOWN && ts->f90_type != ts->type | |
2404 | && !((ts->f90_type == BT_REAL && ts->type == BT_COMPLEX) | |
2405 | || (ts->f90_type == BT_COMPLEX && ts->type == BT_REAL))) | |
db30e21c | 2406 | gfc_warning_now (0, "C kind type parameter is for type %s but type at %L " |
2be51762 TB |
2407 | "is %s", gfc_basic_typename (ts->f90_type), &where, |
2408 | gfc_basic_typename (ts->type)); | |
2ec855f1 | 2409 | |
96ee3a4a | 2410 | gfc_gobble_whitespace (); |
8fc541d3 FXC |
2411 | if ((c = gfc_next_ascii_char ()) != ')' |
2412 | && (ts->type != BT_CHARACTER || c != ',')) | |
6de9cd9a | 2413 | { |
96ee3a4a TB |
2414 | if (ts->type == BT_CHARACTER) |
2415 | gfc_error ("Missing right parenthesis or comma at %C"); | |
2416 | else | |
2417 | gfc_error ("Missing right parenthesis at %C"); | |
e2d29968 | 2418 | m = MATCH_ERROR; |
6de9cd9a | 2419 | } |
a8b3b0b6 CR |
2420 | else |
2421 | /* All tests passed. */ | |
2422 | m = MATCH_YES; | |
6de9cd9a | 2423 | |
a8b3b0b6 CR |
2424 | if(m == MATCH_ERROR) |
2425 | gfc_current_locus = where; | |
f4347334 | 2426 | |
203c7ebf | 2427 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
f4347334 ZG |
2428 | ts->kind = 8; |
2429 | ||
2430 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2431 | { | |
2432 | if (ts->kind == 4) | |
2433 | { | |
203c7ebf | 2434 | if (flag_real4_kind == 8) |
f4347334 | 2435 | ts->kind = 8; |
203c7ebf | 2436 | if (flag_real4_kind == 10) |
f4347334 | 2437 | ts->kind = 10; |
203c7ebf | 2438 | if (flag_real4_kind == 16) |
f4347334 ZG |
2439 | ts->kind = 16; |
2440 | } | |
2441 | ||
2442 | if (ts->kind == 8) | |
2443 | { | |
203c7ebf | 2444 | if (flag_real8_kind == 4) |
f4347334 | 2445 | ts->kind = 4; |
203c7ebf | 2446 | if (flag_real8_kind == 10) |
f4347334 | 2447 | ts->kind = 10; |
203c7ebf | 2448 | if (flag_real8_kind == 16) |
f4347334 ZG |
2449 | ts->kind = 16; |
2450 | } | |
2451 | } | |
2452 | ||
a8b3b0b6 CR |
2453 | /* Return what we know from the test(s). */ |
2454 | return m; | |
6de9cd9a DN |
2455 | |
2456 | no_match: | |
2457 | gfc_free_expr (e); | |
63645982 | 2458 | gfc_current_locus = where; |
6de9cd9a DN |
2459 | return m; |
2460 | } | |
2461 | ||
2462 | ||
187de1ed FXC |
2463 | static match |
2464 | match_char_kind (int * kind, int * is_iso_c) | |
2465 | { | |
2466 | locus where; | |
2467 | gfc_expr *e; | |
2468 | match m, n; | |
2469 | const char *msg; | |
2470 | ||
2471 | m = MATCH_NO; | |
2472 | e = NULL; | |
2473 | where = gfc_current_locus; | |
2474 | ||
2475 | n = gfc_match_init_expr (&e); | |
96ee3a4a | 2476 | |
1c8bcdf7 | 2477 | if (n != MATCH_YES && gfc_matching_function) |
96ee3a4a | 2478 | { |
1c8bcdf7 | 2479 | /* The expression might include use-associated or imported |
f5acf0f2 | 2480 | parameters and try again after the specification |
1c8bcdf7 | 2481 | expressions. */ |
96ee3a4a | 2482 | gfc_free_expr (e); |
96ee3a4a TB |
2483 | gfc_undo_symbols (); |
2484 | return MATCH_YES; | |
2485 | } | |
2486 | ||
187de1ed FXC |
2487 | if (n == MATCH_NO) |
2488 | gfc_error ("Expected initialization expression at %C"); | |
2489 | if (n != MATCH_YES) | |
2490 | return MATCH_ERROR; | |
2491 | ||
2492 | if (e->rank != 0) | |
2493 | { | |
2494 | gfc_error ("Expected scalar initialization expression at %C"); | |
2495 | m = MATCH_ERROR; | |
2496 | goto no_match; | |
2497 | } | |
2498 | ||
2499 | msg = gfc_extract_int (e, kind); | |
2500 | *is_iso_c = e->ts.is_iso_c; | |
2501 | if (msg != NULL) | |
2502 | { | |
2503 | gfc_error (msg); | |
2504 | m = MATCH_ERROR; | |
2505 | goto no_match; | |
2506 | } | |
2507 | ||
2508 | gfc_free_expr (e); | |
2509 | ||
2510 | /* Ignore errors to this point, if we've gotten here. This means | |
2511 | we ignore the m=MATCH_ERROR from above. */ | |
2512 | if (gfc_validate_kind (BT_CHARACTER, *kind, true) < 0) | |
2513 | { | |
2514 | gfc_error ("Kind %d is not supported for CHARACTER at %C", *kind); | |
2515 | m = MATCH_ERROR; | |
2516 | } | |
2517 | else | |
2518 | /* All tests passed. */ | |
2519 | m = MATCH_YES; | |
2520 | ||
2521 | if (m == MATCH_ERROR) | |
2522 | gfc_current_locus = where; | |
f5acf0f2 | 2523 | |
187de1ed FXC |
2524 | /* Return what we know from the test(s). */ |
2525 | return m; | |
2526 | ||
2527 | no_match: | |
2528 | gfc_free_expr (e); | |
2529 | gfc_current_locus = where; | |
2530 | return m; | |
2531 | } | |
2532 | ||
8234e5e0 | 2533 | |
6de9cd9a DN |
2534 | /* Match the various kind/length specifications in a CHARACTER |
2535 | declaration. We don't return MATCH_NO. */ | |
2536 | ||
8234e5e0 SK |
2537 | match |
2538 | gfc_match_char_spec (gfc_typespec *ts) | |
6de9cd9a | 2539 | { |
187de1ed | 2540 | int kind, seen_length, is_iso_c; |
6de9cd9a DN |
2541 | gfc_charlen *cl; |
2542 | gfc_expr *len; | |
2543 | match m; | |
e69afb29 | 2544 | bool deferred; |
187de1ed | 2545 | |
6de9cd9a DN |
2546 | len = NULL; |
2547 | seen_length = 0; | |
187de1ed FXC |
2548 | kind = 0; |
2549 | is_iso_c = 0; | |
e69afb29 | 2550 | deferred = false; |
6de9cd9a DN |
2551 | |
2552 | /* Try the old-style specification first. */ | |
2553 | old_char_selector = 0; | |
2554 | ||
2767f2cc | 2555 | m = match_char_length (&len, &deferred, true); |
6de9cd9a DN |
2556 | if (m != MATCH_NO) |
2557 | { | |
2558 | if (m == MATCH_YES) | |
2559 | old_char_selector = 1; | |
2560 | seen_length = 1; | |
2561 | goto done; | |
2562 | } | |
2563 | ||
2564 | m = gfc_match_char ('('); | |
2565 | if (m != MATCH_YES) | |
2566 | { | |
a8b3b0b6 | 2567 | m = MATCH_YES; /* Character without length is a single char. */ |
6de9cd9a DN |
2568 | goto done; |
2569 | } | |
2570 | ||
a8b3b0b6 | 2571 | /* Try the weird case: ( KIND = <int> [ , LEN = <len-param> ] ). */ |
6de9cd9a DN |
2572 | if (gfc_match (" kind =") == MATCH_YES) |
2573 | { | |
187de1ed | 2574 | m = match_char_kind (&kind, &is_iso_c); |
f5acf0f2 | 2575 | |
6de9cd9a DN |
2576 | if (m == MATCH_ERROR) |
2577 | goto done; | |
2578 | if (m == MATCH_NO) | |
2579 | goto syntax; | |
2580 | ||
2581 | if (gfc_match (" , len =") == MATCH_NO) | |
2582 | goto rparen; | |
2583 | ||
e69afb29 | 2584 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
2585 | if (m == MATCH_NO) |
2586 | goto syntax; | |
2587 | if (m == MATCH_ERROR) | |
2588 | goto done; | |
2589 | seen_length = 1; | |
2590 | ||
2591 | goto rparen; | |
2592 | } | |
2593 | ||
66e4ab31 | 2594 | /* Try to match "LEN = <len-param>" or "LEN = <len-param>, KIND = <int>". */ |
6de9cd9a DN |
2595 | if (gfc_match (" len =") == MATCH_YES) |
2596 | { | |
e69afb29 | 2597 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
2598 | if (m == MATCH_NO) |
2599 | goto syntax; | |
2600 | if (m == MATCH_ERROR) | |
2601 | goto done; | |
2602 | seen_length = 1; | |
2603 | ||
2604 | if (gfc_match_char (')') == MATCH_YES) | |
2605 | goto done; | |
2606 | ||
2607 | if (gfc_match (" , kind =") != MATCH_YES) | |
2608 | goto syntax; | |
2609 | ||
187de1ed FXC |
2610 | if (match_char_kind (&kind, &is_iso_c) == MATCH_ERROR) |
2611 | goto done; | |
6de9cd9a DN |
2612 | |
2613 | goto rparen; | |
2614 | } | |
2615 | ||
66e4ab31 | 2616 | /* Try to match ( <len-param> ) or ( <len-param> , [ KIND = ] <int> ). */ |
e69afb29 | 2617 | m = char_len_param_value (&len, &deferred); |
6de9cd9a DN |
2618 | if (m == MATCH_NO) |
2619 | goto syntax; | |
2620 | if (m == MATCH_ERROR) | |
2621 | goto done; | |
2622 | seen_length = 1; | |
2623 | ||
2624 | m = gfc_match_char (')'); | |
2625 | if (m == MATCH_YES) | |
2626 | goto done; | |
2627 | ||
2628 | if (gfc_match_char (',') != MATCH_YES) | |
2629 | goto syntax; | |
2630 | ||
a8b3b0b6 | 2631 | gfc_match (" kind ="); /* Gobble optional text. */ |
6de9cd9a | 2632 | |
187de1ed | 2633 | m = match_char_kind (&kind, &is_iso_c); |
6de9cd9a DN |
2634 | if (m == MATCH_ERROR) |
2635 | goto done; | |
2636 | if (m == MATCH_NO) | |
2637 | goto syntax; | |
2638 | ||
2639 | rparen: | |
2640 | /* Require a right-paren at this point. */ | |
2641 | m = gfc_match_char (')'); | |
2642 | if (m == MATCH_YES) | |
2643 | goto done; | |
2644 | ||
2645 | syntax: | |
2646 | gfc_error ("Syntax error in CHARACTER declaration at %C"); | |
2647 | m = MATCH_ERROR; | |
16f8ffc8 JD |
2648 | gfc_free_expr (len); |
2649 | return m; | |
6de9cd9a DN |
2650 | |
2651 | done: | |
a99d95a2 PT |
2652 | /* Deal with character functions after USE and IMPORT statements. */ |
2653 | if (gfc_matching_function) | |
1c8bcdf7 | 2654 | { |
a99d95a2 | 2655 | gfc_free_expr (len); |
1c8bcdf7 PT |
2656 | gfc_undo_symbols (); |
2657 | return MATCH_YES; | |
2658 | } | |
2659 | ||
6de9cd9a DN |
2660 | if (m != MATCH_YES) |
2661 | { | |
2662 | gfc_free_expr (len); | |
2663 | return m; | |
2664 | } | |
2665 | ||
2666 | /* Do some final massaging of the length values. */ | |
b76e28c6 | 2667 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
6de9cd9a DN |
2668 | |
2669 | if (seen_length == 0) | |
b7e75771 | 2670 | cl->length = gfc_get_int_expr (gfc_default_integer_kind, NULL, 1); |
6de9cd9a | 2671 | else |
5cd09fac | 2672 | cl->length = len; |
6de9cd9a | 2673 | |
bc21d315 | 2674 | ts->u.cl = cl; |
187de1ed | 2675 | ts->kind = kind == 0 ? gfc_default_character_kind : kind; |
e69afb29 | 2676 | ts->deferred = deferred; |
6de9cd9a | 2677 | |
eea58adb | 2678 | /* We have to know if it was a C interoperable kind so we can |
a8b3b0b6 | 2679 | do accurate type checking of bind(c) procs, etc. */ |
187de1ed | 2680 | if (kind != 0) |
eea58adb | 2681 | /* Mark this as C interoperable if being declared with one |
187de1ed FXC |
2682 | of the named constants from iso_c_binding. */ |
2683 | ts->is_c_interop = is_iso_c; | |
a8b3b0b6 | 2684 | else if (len != NULL) |
187de1ed FXC |
2685 | /* Here, we might have parsed something such as: character(c_char) |
2686 | In this case, the parsing code above grabs the c_char when | |
2687 | looking for the length (line 1690, roughly). it's the last | |
2688 | testcase for parsing the kind params of a character variable. | |
2689 | However, it's not actually the length. this seems like it | |
f5acf0f2 | 2690 | could be an error. |
187de1ed FXC |
2691 | To see if the user used a C interop kind, test the expr |
2692 | of the so called length, and see if it's C interoperable. */ | |
2693 | ts->is_c_interop = len->ts.is_iso_c; | |
f5acf0f2 | 2694 | |
6de9cd9a DN |
2695 | return MATCH_YES; |
2696 | } | |
2697 | ||
2698 | ||
e74f1cc8 JW |
2699 | /* Matches a declaration-type-spec (F03:R502). If successful, sets the ts |
2700 | structure to the matched specification. This is necessary for FUNCTION and | |
6de9cd9a DN |
2701 | IMPLICIT statements. |
2702 | ||
d51347f9 | 2703 | If implicit_flag is nonzero, then we don't check for the optional |
e5ddaa24 | 2704 | kind specification. Not doing so is needed for matching an IMPLICIT |
6de9cd9a DN |
2705 | statement correctly. */ |
2706 | ||
e2d29968 | 2707 | match |
e74f1cc8 | 2708 | gfc_match_decl_type_spec (gfc_typespec *ts, int implicit_flag) |
6de9cd9a DN |
2709 | { |
2710 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c3f34952 | 2711 | gfc_symbol *sym, *dt_sym; |
6de9cd9a | 2712 | match m; |
8fc541d3 | 2713 | char c; |
0fb56814 | 2714 | bool seen_deferred_kind, matched_type; |
c3f34952 | 2715 | const char *dt_name; |
6de9cd9a | 2716 | |
1c8bcdf7 PT |
2717 | /* A belt and braces check that the typespec is correctly being treated |
2718 | as a deferred characteristic association. */ | |
2719 | seen_deferred_kind = (gfc_current_state () == COMP_FUNCTION) | |
a99d95a2 PT |
2720 | && (gfc_current_block ()->result->ts.kind == -1) |
2721 | && (ts->kind == -1); | |
6de9cd9a | 2722 | gfc_clear_ts (ts); |
1c8bcdf7 PT |
2723 | if (seen_deferred_kind) |
2724 | ts->kind = -1; | |
6de9cd9a | 2725 | |
a8b3b0b6 | 2726 | /* Clear the current binding label, in case one is given. */ |
62603fae | 2727 | curr_binding_label = NULL; |
a8b3b0b6 | 2728 | |
5f700e6d AL |
2729 | if (gfc_match (" byte") == MATCH_YES) |
2730 | { | |
524af0d6 | 2731 | if (!gfc_notify_std (GFC_STD_GNU, "BYTE type at %C")) |
5f700e6d AL |
2732 | return MATCH_ERROR; |
2733 | ||
2734 | if (gfc_validate_kind (BT_INTEGER, 1, true) < 0) | |
2735 | { | |
2736 | gfc_error ("BYTE type used at %C " | |
2737 | "is not available on the target machine"); | |
2738 | return MATCH_ERROR; | |
2739 | } | |
d51347f9 | 2740 | |
5f700e6d AL |
2741 | ts->type = BT_INTEGER; |
2742 | ts->kind = 1; | |
2743 | return MATCH_YES; | |
2744 | } | |
2745 | ||
0fb56814 | 2746 | |
45a69325 | 2747 | m = gfc_match (" type ("); |
0fb56814 | 2748 | matched_type = (m == MATCH_YES); |
45a69325 TB |
2749 | if (matched_type) |
2750 | { | |
2751 | gfc_gobble_whitespace (); | |
2752 | if (gfc_peek_ascii_char () == '*') | |
2753 | { | |
2754 | if ((m = gfc_match ("*)")) != MATCH_YES) | |
2755 | return m; | |
2756 | if (gfc_current_state () == COMP_DERIVED) | |
2757 | { | |
2758 | gfc_error ("Assumed type at %C is not allowed for components"); | |
2759 | return MATCH_ERROR; | |
2760 | } | |
524af0d6 JB |
2761 | if (!gfc_notify_std (GFC_STD_F2008_TS, "Assumed type " |
2762 | "at %C")) | |
45a69325 TB |
2763 | return MATCH_ERROR; |
2764 | ts->type = BT_ASSUMED; | |
2765 | return MATCH_YES; | |
2766 | } | |
2767 | ||
2768 | m = gfc_match ("%n", name); | |
2769 | matched_type = (m == MATCH_YES); | |
2770 | } | |
2771 | ||
0fb56814 TB |
2772 | if ((matched_type && strcmp ("integer", name) == 0) |
2773 | || (!matched_type && gfc_match (" integer") == MATCH_YES)) | |
6de9cd9a DN |
2774 | { |
2775 | ts->type = BT_INTEGER; | |
9d64df18 | 2776 | ts->kind = gfc_default_integer_kind; |
6de9cd9a DN |
2777 | goto get_kind; |
2778 | } | |
2779 | ||
0fb56814 TB |
2780 | if ((matched_type && strcmp ("character", name) == 0) |
2781 | || (!matched_type && gfc_match (" character") == MATCH_YES)) | |
6de9cd9a | 2782 | { |
0fb56814 | 2783 | if (matched_type |
524af0d6 JB |
2784 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
2785 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
2786 | return MATCH_ERROR; |
2787 | ||
6de9cd9a | 2788 | ts->type = BT_CHARACTER; |
e5ddaa24 | 2789 | if (implicit_flag == 0) |
0fb56814 | 2790 | m = gfc_match_char_spec (ts); |
e5ddaa24 | 2791 | else |
0fb56814 TB |
2792 | m = MATCH_YES; |
2793 | ||
2794 | if (matched_type && m == MATCH_YES && gfc_match_char (')') != MATCH_YES) | |
2795 | m = MATCH_ERROR; | |
2796 | ||
2797 | return m; | |
6de9cd9a DN |
2798 | } |
2799 | ||
0fb56814 TB |
2800 | if ((matched_type && strcmp ("real", name) == 0) |
2801 | || (!matched_type && gfc_match (" real") == MATCH_YES)) | |
6de9cd9a DN |
2802 | { |
2803 | ts->type = BT_REAL; | |
9d64df18 | 2804 | ts->kind = gfc_default_real_kind; |
6de9cd9a DN |
2805 | goto get_kind; |
2806 | } | |
2807 | ||
0fb56814 TB |
2808 | if ((matched_type |
2809 | && (strcmp ("doubleprecision", name) == 0 | |
2810 | || (strcmp ("double", name) == 0 | |
2811 | && gfc_match (" precision") == MATCH_YES))) | |
2812 | || (!matched_type && gfc_match (" double precision") == MATCH_YES)) | |
6de9cd9a | 2813 | { |
0fb56814 | 2814 | if (matched_type |
524af0d6 JB |
2815 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
2816 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
2817 | return MATCH_ERROR; |
2818 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
2819 | return MATCH_ERROR; | |
2820 | ||
6de9cd9a | 2821 | ts->type = BT_REAL; |
9d64df18 | 2822 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
2823 | return MATCH_YES; |
2824 | } | |
2825 | ||
0fb56814 TB |
2826 | if ((matched_type && strcmp ("complex", name) == 0) |
2827 | || (!matched_type && gfc_match (" complex") == MATCH_YES)) | |
6de9cd9a DN |
2828 | { |
2829 | ts->type = BT_COMPLEX; | |
9d64df18 | 2830 | ts->kind = gfc_default_complex_kind; |
6de9cd9a DN |
2831 | goto get_kind; |
2832 | } | |
2833 | ||
0fb56814 TB |
2834 | if ((matched_type |
2835 | && (strcmp ("doublecomplex", name) == 0 | |
2836 | || (strcmp ("double", name) == 0 | |
2837 | && gfc_match (" complex") == MATCH_YES))) | |
2838 | || (!matched_type && gfc_match (" double complex") == MATCH_YES)) | |
6de9cd9a | 2839 | { |
524af0d6 | 2840 | if (!gfc_notify_std (GFC_STD_GNU, "DOUBLE COMPLEX at %C")) |
0fb56814 TB |
2841 | return MATCH_ERROR; |
2842 | ||
2843 | if (matched_type | |
524af0d6 JB |
2844 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
2845 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
2846 | return MATCH_ERROR; |
2847 | ||
2848 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
df8652dc SK |
2849 | return MATCH_ERROR; |
2850 | ||
6de9cd9a | 2851 | ts->type = BT_COMPLEX; |
9d64df18 | 2852 | ts->kind = gfc_default_double_kind; |
6de9cd9a DN |
2853 | return MATCH_YES; |
2854 | } | |
2855 | ||
0fb56814 TB |
2856 | if ((matched_type && strcmp ("logical", name) == 0) |
2857 | || (!matched_type && gfc_match (" logical") == MATCH_YES)) | |
6de9cd9a DN |
2858 | { |
2859 | ts->type = BT_LOGICAL; | |
9d64df18 | 2860 | ts->kind = gfc_default_logical_kind; |
6de9cd9a DN |
2861 | goto get_kind; |
2862 | } | |
2863 | ||
0fb56814 TB |
2864 | if (matched_type) |
2865 | m = gfc_match_char (')'); | |
2866 | ||
cf2b3c22 TB |
2867 | if (m == MATCH_YES) |
2868 | ts->type = BT_DERIVED; | |
2869 | else | |
727e8544 | 2870 | { |
528622fd JW |
2871 | /* Match CLASS declarations. */ |
2872 | m = gfc_match (" class ( * )"); | |
2873 | if (m == MATCH_ERROR) | |
2874 | return MATCH_ERROR; | |
2875 | else if (m == MATCH_YES) | |
2876 | { | |
8b704316 PT |
2877 | gfc_symbol *upe; |
2878 | gfc_symtree *st; | |
2879 | ts->type = BT_CLASS; | |
f5acf0f2 | 2880 | gfc_find_symbol ("STAR", gfc_current_ns, 1, &upe); |
8b704316 PT |
2881 | if (upe == NULL) |
2882 | { | |
f5acf0f2 PT |
2883 | upe = gfc_new_symbol ("STAR", gfc_current_ns); |
2884 | st = gfc_new_symtree (&gfc_current_ns->sym_root, "STAR"); | |
8b704316 PT |
2885 | st->n.sym = upe; |
2886 | gfc_set_sym_referenced (upe); | |
2887 | upe->refs++; | |
2888 | upe->ts.type = BT_VOID; | |
2889 | upe->attr.unlimited_polymorphic = 1; | |
2890 | /* This is essential to force the construction of | |
2891 | unlimited polymorphic component class containers. */ | |
2892 | upe->attr.zero_comp = 1; | |
524af0d6 JB |
2893 | if (!gfc_add_flavor (&upe->attr, FL_DERIVED, NULL, |
2894 | &gfc_current_locus)) | |
528622fd JW |
2895 | return MATCH_ERROR; |
2896 | } | |
8b704316 PT |
2897 | else |
2898 | { | |
f5acf0f2 | 2899 | st = gfc_find_symtree (gfc_current_ns->sym_root, "STAR"); |
8b704316 | 2900 | if (st == NULL) |
f5acf0f2 | 2901 | st = gfc_new_symtree (&gfc_current_ns->sym_root, "STAR"); |
8b704316 PT |
2902 | st->n.sym = upe; |
2903 | upe->refs++; | |
2904 | } | |
2905 | ts->u.derived = upe; | |
2906 | return m; | |
2907 | } | |
528622fd | 2908 | |
727e8544 JW |
2909 | m = gfc_match (" class ( %n )", name); |
2910 | if (m != MATCH_YES) | |
2911 | return m; | |
cf2b3c22 | 2912 | ts->type = BT_CLASS; |
727e8544 | 2913 | |
524af0d6 | 2914 | if (!gfc_notify_std (GFC_STD_F2003, "CLASS statement at %C")) |
e74f1cc8 | 2915 | return MATCH_ERROR; |
727e8544 | 2916 | } |
6de9cd9a | 2917 | |
1c8bcdf7 PT |
2918 | /* Defer association of the derived type until the end of the |
2919 | specification block. However, if the derived type can be | |
f5acf0f2 | 2920 | found, add it to the typespec. */ |
1c8bcdf7 | 2921 | if (gfc_matching_function) |
e2d29968 | 2922 | { |
bc21d315 | 2923 | ts->u.derived = NULL; |
1c8bcdf7 PT |
2924 | if (gfc_current_state () != COMP_INTERFACE |
2925 | && !gfc_find_symbol (name, NULL, 1, &sym) && sym) | |
c3f34952 TB |
2926 | { |
2927 | sym = gfc_find_dt_in_generic (sym); | |
2928 | ts->u.derived = sym; | |
2929 | } | |
e2d29968 PT |
2930 | return MATCH_YES; |
2931 | } | |
2932 | ||
2933 | /* Search for the name but allow the components to be defined later. If | |
2934 | type = -1, this typespec has been seen in a function declaration but | |
c3f34952 | 2935 | the type could not be accessed at that point. The actual derived type is |
eea58adb | 2936 | stored in a symtree with the first letter of the name capitalized; the |
c3f34952 TB |
2937 | symtree with the all lower-case name contains the associated |
2938 | generic function. */ | |
2939 | dt_name = gfc_get_string ("%c%s", | |
2940 | (char) TOUPPER ((unsigned char) name[0]), | |
2941 | (const char*)&name[1]); | |
1c8bcdf7 | 2942 | sym = NULL; |
c3f34952 TB |
2943 | dt_sym = NULL; |
2944 | if (ts->kind != -1) | |
6de9cd9a | 2945 | { |
c3f34952 TB |
2946 | gfc_get_ha_symbol (name, &sym); |
2947 | if (sym->generic && gfc_find_symbol (dt_name, NULL, 0, &dt_sym)) | |
2948 | { | |
c4100eae | 2949 | gfc_error ("Type name %qs at %C is ambiguous", name); |
c3f34952 TB |
2950 | return MATCH_ERROR; |
2951 | } | |
2952 | if (sym->generic && !dt_sym) | |
2953 | dt_sym = gfc_find_dt_in_generic (sym); | |
6de9cd9a | 2954 | } |
e2d29968 PT |
2955 | else if (ts->kind == -1) |
2956 | { | |
1c8bcdf7 PT |
2957 | int iface = gfc_state_stack->previous->state != COMP_INTERFACE |
2958 | || gfc_current_ns->has_import_set; | |
c3f34952 TB |
2959 | gfc_find_symbol (name, NULL, iface, &sym); |
2960 | if (sym && sym->generic && gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
f5acf0f2 | 2961 | { |
c4100eae | 2962 | gfc_error ("Type name %qs at %C is ambiguous", name); |
e2d29968 PT |
2963 | return MATCH_ERROR; |
2964 | } | |
c3f34952 TB |
2965 | if (sym && sym->generic && !dt_sym) |
2966 | dt_sym = gfc_find_dt_in_generic (sym); | |
e2d29968 | 2967 | |
1c8bcdf7 | 2968 | ts->kind = 0; |
e2d29968 PT |
2969 | if (sym == NULL) |
2970 | return MATCH_NO; | |
2971 | } | |
6de9cd9a | 2972 | |
c3f34952 TB |
2973 | if ((sym->attr.flavor != FL_UNKNOWN |
2974 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.generic)) | |
2975 | || sym->attr.subroutine) | |
2976 | { | |
fea70c99 MLI |
2977 | gfc_error ("Type name %qs at %C conflicts with previously declared " |
2978 | "entity at %L, which has the same name", name, | |
2979 | &sym->declared_at); | |
c3f34952 TB |
2980 | return MATCH_ERROR; |
2981 | } | |
6de9cd9a | 2982 | |
44c57c2f | 2983 | gfc_save_symbol_data (sym); |
1c8bcdf7 | 2984 | gfc_set_sym_referenced (sym); |
c3f34952 | 2985 | if (!sym->attr.generic |
524af0d6 | 2986 | && !gfc_add_generic (&sym->attr, sym->name, NULL)) |
c3f34952 TB |
2987 | return MATCH_ERROR; |
2988 | ||
2989 | if (!sym->attr.function | |
524af0d6 | 2990 | && !gfc_add_function (&sym->attr, sym->name, NULL)) |
c3f34952 TB |
2991 | return MATCH_ERROR; |
2992 | ||
2993 | if (!dt_sym) | |
2994 | { | |
2995 | gfc_interface *intr, *head; | |
2996 | ||
2997 | /* Use upper case to save the actual derived-type symbol. */ | |
2998 | gfc_get_symbol (dt_name, NULL, &dt_sym); | |
2999 | dt_sym->name = gfc_get_string (sym->name); | |
3000 | head = sym->generic; | |
3001 | intr = gfc_get_interface (); | |
3002 | intr->sym = dt_sym; | |
3003 | intr->where = gfc_current_locus; | |
3004 | intr->next = head; | |
3005 | sym->generic = intr; | |
3006 | sym->attr.if_source = IFSRC_DECL; | |
3007 | } | |
44c57c2f MM |
3008 | else |
3009 | gfc_save_symbol_data (dt_sym); | |
c3f34952 TB |
3010 | |
3011 | gfc_set_sym_referenced (dt_sym); | |
3012 | ||
3013 | if (dt_sym->attr.flavor != FL_DERIVED | |
524af0d6 | 3014 | && !gfc_add_flavor (&dt_sym->attr, FL_DERIVED, sym->name, NULL)) |
c3f34952 TB |
3015 | return MATCH_ERROR; |
3016 | ||
3017 | ts->u.derived = dt_sym; | |
6de9cd9a DN |
3018 | |
3019 | return MATCH_YES; | |
3020 | ||
3021 | get_kind: | |
0fb56814 | 3022 | if (matched_type |
524af0d6 JB |
3023 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3024 | "intrinsic-type-spec at %C")) | |
0fb56814 TB |
3025 | return MATCH_ERROR; |
3026 | ||
6de9cd9a DN |
3027 | /* For all types except double, derived and character, look for an |
3028 | optional kind specifier. MATCH_NO is actually OK at this point. */ | |
e5ddaa24 | 3029 | if (implicit_flag == 1) |
0fb56814 TB |
3030 | { |
3031 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
3032 | return MATCH_ERROR; | |
3033 | ||
3034 | return MATCH_YES; | |
3035 | } | |
6de9cd9a | 3036 | |
0ff0dfbf TS |
3037 | if (gfc_current_form == FORM_FREE) |
3038 | { | |
0b3624f6 SK |
3039 | c = gfc_peek_ascii_char (); |
3040 | if (!gfc_is_whitespace (c) && c != '*' && c != '(' | |
636dff67 | 3041 | && c != ':' && c != ',') |
0fb56814 TB |
3042 | { |
3043 | if (matched_type && c == ')') | |
3044 | { | |
3045 | gfc_next_ascii_char (); | |
3046 | return MATCH_YES; | |
3047 | } | |
3048 | return MATCH_NO; | |
3049 | } | |
0ff0dfbf TS |
3050 | } |
3051 | ||
e2d29968 | 3052 | m = gfc_match_kind_spec (ts, false); |
6de9cd9a | 3053 | if (m == MATCH_NO && ts->type != BT_CHARACTER) |
4381322d SK |
3054 | { |
3055 | m = gfc_match_old_kind_spec (ts); | |
3056 | if (gfc_validate_kind (ts->type, ts->kind, true) == -1) | |
3057 | return MATCH_ERROR; | |
3058 | } | |
6de9cd9a | 3059 | |
0fb56814 TB |
3060 | if (matched_type && gfc_match_char (')') != MATCH_YES) |
3061 | return MATCH_ERROR; | |
3062 | ||
1c8bcdf7 PT |
3063 | /* Defer association of the KIND expression of function results |
3064 | until after USE and IMPORT statements. */ | |
3065 | if ((gfc_current_state () == COMP_NONE && gfc_error_flag_test ()) | |
3066 | || gfc_matching_function) | |
3067 | return MATCH_YES; | |
3068 | ||
6de9cd9a DN |
3069 | if (m == MATCH_NO) |
3070 | m = MATCH_YES; /* No kind specifier found. */ | |
3071 | ||
3072 | return m; | |
3073 | } | |
3074 | ||
3075 | ||
e5ddaa24 TS |
3076 | /* Match an IMPLICIT NONE statement. Actually, this statement is |
3077 | already matched in parse.c, or we would not end up here in the | |
3078 | first place. So the only thing we need to check, is if there is | |
3079 | trailing garbage. If not, the match is successful. */ | |
3080 | ||
3081 | match | |
3082 | gfc_match_implicit_none (void) | |
3083 | { | |
8b7a967e TB |
3084 | char c; |
3085 | match m; | |
3086 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
3087 | bool type = false; | |
3088 | bool external = false; | |
a6c63173 TB |
3089 | locus cur_loc = gfc_current_locus; |
3090 | ||
3091 | if (gfc_current_ns->seen_implicit_none | |
3092 | || gfc_current_ns->has_implicit_none_export) | |
3093 | { | |
3094 | gfc_error ("Duplicate IMPLICIT NONE statement at %C"); | |
3095 | return MATCH_ERROR; | |
3096 | } | |
8b7a967e TB |
3097 | |
3098 | gfc_gobble_whitespace (); | |
3099 | c = gfc_peek_ascii_char (); | |
3100 | if (c == '(') | |
3101 | { | |
3102 | (void) gfc_next_ascii_char (); | |
3103 | if (!gfc_notify_std (GFC_STD_F2015, "IMPORT NONE with spec list at %C")) | |
3104 | return MATCH_ERROR; | |
a6c63173 TB |
3105 | |
3106 | gfc_gobble_whitespace (); | |
3107 | if (gfc_peek_ascii_char () == ')') | |
8b7a967e | 3108 | { |
a6c63173 TB |
3109 | (void) gfc_next_ascii_char (); |
3110 | type = true; | |
3111 | } | |
3112 | else | |
3113 | for(;;) | |
3114 | { | |
3115 | m = gfc_match (" %n", name); | |
3116 | if (m != MATCH_YES) | |
3117 | return MATCH_ERROR; | |
8b7a967e | 3118 | |
a6c63173 TB |
3119 | if (strcmp (name, "type") == 0) |
3120 | type = true; | |
3121 | else if (strcmp (name, "external") == 0) | |
3122 | external = true; | |
3123 | else | |
3124 | return MATCH_ERROR; | |
8b7a967e | 3125 | |
a6c63173 TB |
3126 | gfc_gobble_whitespace (); |
3127 | c = gfc_next_ascii_char (); | |
3128 | if (c == ',') | |
3129 | continue; | |
3130 | if (c == ')') | |
3131 | break; | |
3132 | return MATCH_ERROR; | |
3133 | } | |
8b7a967e TB |
3134 | } |
3135 | else | |
3136 | type = true; | |
3137 | ||
3138 | if (gfc_match_eos () != MATCH_YES) | |
3139 | return MATCH_ERROR; | |
3140 | ||
a6c63173 | 3141 | gfc_set_implicit_none (type, external, &cur_loc); |
8b7a967e TB |
3142 | |
3143 | return MATCH_YES; | |
e5ddaa24 TS |
3144 | } |
3145 | ||
3146 | ||
3147 | /* Match the letter range(s) of an IMPLICIT statement. */ | |
3148 | ||
3149 | static match | |
1107b970 | 3150 | match_implicit_range (void) |
e5ddaa24 | 3151 | { |
8fc541d3 FXC |
3152 | char c, c1, c2; |
3153 | int inner; | |
e5ddaa24 TS |
3154 | locus cur_loc; |
3155 | ||
3156 | cur_loc = gfc_current_locus; | |
3157 | ||
3158 | gfc_gobble_whitespace (); | |
8fc541d3 | 3159 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
3160 | if (c != '(') |
3161 | { | |
3162 | gfc_error ("Missing character range in IMPLICIT at %C"); | |
3163 | goto bad; | |
3164 | } | |
3165 | ||
3166 | inner = 1; | |
3167 | while (inner) | |
3168 | { | |
3169 | gfc_gobble_whitespace (); | |
8fc541d3 | 3170 | c1 = gfc_next_ascii_char (); |
e5ddaa24 TS |
3171 | if (!ISALPHA (c1)) |
3172 | goto bad; | |
3173 | ||
3174 | gfc_gobble_whitespace (); | |
8fc541d3 | 3175 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
3176 | |
3177 | switch (c) | |
3178 | { | |
3179 | case ')': | |
66e4ab31 | 3180 | inner = 0; /* Fall through. */ |
e5ddaa24 TS |
3181 | |
3182 | case ',': | |
3183 | c2 = c1; | |
3184 | break; | |
3185 | ||
3186 | case '-': | |
3187 | gfc_gobble_whitespace (); | |
8fc541d3 | 3188 | c2 = gfc_next_ascii_char (); |
e5ddaa24 TS |
3189 | if (!ISALPHA (c2)) |
3190 | goto bad; | |
3191 | ||
3192 | gfc_gobble_whitespace (); | |
8fc541d3 | 3193 | c = gfc_next_ascii_char (); |
e5ddaa24 TS |
3194 | |
3195 | if ((c != ',') && (c != ')')) | |
3196 | goto bad; | |
3197 | if (c == ')') | |
3198 | inner = 0; | |
3199 | ||
3200 | break; | |
3201 | ||
3202 | default: | |
3203 | goto bad; | |
3204 | } | |
3205 | ||
3206 | if (c1 > c2) | |
3207 | { | |
3208 | gfc_error ("Letters must be in alphabetic order in " | |
3209 | "IMPLICIT statement at %C"); | |
3210 | goto bad; | |
3211 | } | |
3212 | ||
3213 | /* See if we can add the newly matched range to the pending | |
636dff67 SK |
3214 | implicits from this IMPLICIT statement. We do not check for |
3215 | conflicts with whatever earlier IMPLICIT statements may have | |
3216 | set. This is done when we've successfully finished matching | |
3217 | the current one. */ | |
524af0d6 | 3218 | if (!gfc_add_new_implicit_range (c1, c2)) |
e5ddaa24 TS |
3219 | goto bad; |
3220 | } | |
3221 | ||
3222 | return MATCH_YES; | |
3223 | ||
3224 | bad: | |
3225 | gfc_syntax_error (ST_IMPLICIT); | |
3226 | ||
3227 | gfc_current_locus = cur_loc; | |
3228 | return MATCH_ERROR; | |
3229 | } | |
3230 | ||
3231 | ||
3232 | /* Match an IMPLICIT statement, storing the types for | |
3233 | gfc_set_implicit() if the statement is accepted by the parser. | |
3234 | There is a strange looking, but legal syntactic construction | |
3235 | possible. It looks like: | |
3236 | ||
3237 | IMPLICIT INTEGER (a-b) (c-d) | |
3238 | ||
3239 | This is legal if "a-b" is a constant expression that happens to | |
3240 | equal one of the legal kinds for integers. The real problem | |
3241 | happens with an implicit specification that looks like: | |
3242 | ||
3243 | IMPLICIT INTEGER (a-b) | |
3244 | ||
3245 | In this case, a typespec matcher that is "greedy" (as most of the | |
3246 | matchers are) gobbles the character range as a kindspec, leaving | |
3247 | nothing left. We therefore have to go a bit more slowly in the | |
3248 | matching process by inhibiting the kindspec checking during | |
3249 | typespec matching and checking for a kind later. */ | |
3250 | ||
3251 | match | |
3252 | gfc_match_implicit (void) | |
3253 | { | |
3254 | gfc_typespec ts; | |
3255 | locus cur_loc; | |
8fc541d3 | 3256 | char c; |
e5ddaa24 TS |
3257 | match m; |
3258 | ||
8b7a967e TB |
3259 | if (gfc_current_ns->seen_implicit_none) |
3260 | { | |
3261 | gfc_error ("IMPLICIT statement at %C following an IMPLICIT NONE (type) " | |
3262 | "statement"); | |
3263 | return MATCH_ERROR; | |
3264 | } | |
3265 | ||
44000dbb JD |
3266 | gfc_clear_ts (&ts); |
3267 | ||
e5ddaa24 TS |
3268 | /* We don't allow empty implicit statements. */ |
3269 | if (gfc_match_eos () == MATCH_YES) | |
3270 | { | |
3271 | gfc_error ("Empty IMPLICIT statement at %C"); | |
3272 | return MATCH_ERROR; | |
3273 | } | |
3274 | ||
e5ddaa24 TS |
3275 | do |
3276 | { | |
1107b970 PB |
3277 | /* First cleanup. */ |
3278 | gfc_clear_new_implicit (); | |
3279 | ||
e5ddaa24 | 3280 | /* A basic type is mandatory here. */ |
e74f1cc8 | 3281 | m = gfc_match_decl_type_spec (&ts, 1); |
e5ddaa24 TS |
3282 | if (m == MATCH_ERROR) |
3283 | goto error; | |
3284 | if (m == MATCH_NO) | |
3285 | goto syntax; | |
3286 | ||
3287 | cur_loc = gfc_current_locus; | |
1107b970 | 3288 | m = match_implicit_range (); |
e5ddaa24 TS |
3289 | |
3290 | if (m == MATCH_YES) | |
3291 | { | |
1107b970 | 3292 | /* We may have <TYPE> (<RANGE>). */ |
e5ddaa24 | 3293 | gfc_gobble_whitespace (); |
a6c63173 TB |
3294 | c = gfc_peek_ascii_char (); |
3295 | if (c == ',' || c == '\n' || c == ';' || c == '!') | |
1107b970 PB |
3296 | { |
3297 | /* Check for CHARACTER with no length parameter. */ | |
bc21d315 | 3298 | if (ts.type == BT_CHARACTER && !ts.u.cl) |
1107b970 | 3299 | { |
9d64df18 | 3300 | ts.kind = gfc_default_character_kind; |
b76e28c6 | 3301 | ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
b7e75771 JD |
3302 | ts.u.cl->length = gfc_get_int_expr (gfc_default_integer_kind, |
3303 | NULL, 1); | |
1107b970 PB |
3304 | } |
3305 | ||
3306 | /* Record the Successful match. */ | |
524af0d6 | 3307 | if (!gfc_merge_new_implicit (&ts)) |
1107b970 | 3308 | return MATCH_ERROR; |
a6c63173 TB |
3309 | if (c == ',') |
3310 | c = gfc_next_ascii_char (); | |
3311 | else if (gfc_match_eos () == MATCH_ERROR) | |
3312 | goto error; | |
1107b970 PB |
3313 | continue; |
3314 | } | |
e5ddaa24 TS |
3315 | |
3316 | gfc_current_locus = cur_loc; | |
3317 | } | |
3318 | ||
1107b970 PB |
3319 | /* Discard the (incorrectly) matched range. */ |
3320 | gfc_clear_new_implicit (); | |
3321 | ||
3322 | /* Last chance -- check <TYPE> <SELECTOR> (<RANGE>). */ | |
3323 | if (ts.type == BT_CHARACTER) | |
8234e5e0 | 3324 | m = gfc_match_char_spec (&ts); |
1107b970 | 3325 | else |
e5ddaa24 | 3326 | { |
e2d29968 | 3327 | m = gfc_match_kind_spec (&ts, false); |
e5ddaa24 | 3328 | if (m == MATCH_NO) |
1107b970 PB |
3329 | { |
3330 | m = gfc_match_old_kind_spec (&ts); | |
3331 | if (m == MATCH_ERROR) | |
3332 | goto error; | |
3333 | if (m == MATCH_NO) | |
3334 | goto syntax; | |
3335 | } | |
e5ddaa24 | 3336 | } |
1107b970 PB |
3337 | if (m == MATCH_ERROR) |
3338 | goto error; | |
e5ddaa24 | 3339 | |
1107b970 | 3340 | m = match_implicit_range (); |
e5ddaa24 TS |
3341 | if (m == MATCH_ERROR) |
3342 | goto error; | |
3343 | if (m == MATCH_NO) | |
3344 | goto syntax; | |
3345 | ||
3346 | gfc_gobble_whitespace (); | |
8fc541d3 | 3347 | c = gfc_next_ascii_char (); |
a6c63173 | 3348 | if (c != ',' && gfc_match_eos () != MATCH_YES) |
e5ddaa24 TS |
3349 | goto syntax; |
3350 | ||
524af0d6 | 3351 | if (!gfc_merge_new_implicit (&ts)) |
1107b970 | 3352 | return MATCH_ERROR; |
e5ddaa24 TS |
3353 | } |
3354 | while (c == ','); | |
3355 | ||
1107b970 | 3356 | return MATCH_YES; |
e5ddaa24 TS |
3357 | |
3358 | syntax: | |
3359 | gfc_syntax_error (ST_IMPLICIT); | |
3360 | ||
3361 | error: | |
3362 | return MATCH_ERROR; | |
3363 | } | |
3364 | ||
66e4ab31 | 3365 | |
8998be20 TB |
3366 | match |
3367 | gfc_match_import (void) | |
3368 | { | |
3369 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
3370 | match m; | |
3371 | gfc_symbol *sym; | |
3372 | gfc_symtree *st; | |
3373 | ||
66e4ab31 SK |
3374 | if (gfc_current_ns->proc_name == NULL |
3375 | || gfc_current_ns->proc_name->attr.if_source != IFSRC_IFBODY) | |
8998be20 TB |
3376 | { |
3377 | gfc_error ("IMPORT statement at %C only permitted in " | |
3378 | "an INTERFACE body"); | |
3379 | return MATCH_ERROR; | |
3380 | } | |
3381 | ||
4668d6f9 PT |
3382 | if (gfc_current_ns->proc_name->attr.module_procedure) |
3383 | { | |
3384 | gfc_error ("F2008: C1210 IMPORT statement at %C is not permitted " | |
3385 | "in a module procedure interface body"); | |
3386 | return MATCH_ERROR; | |
3387 | } | |
3388 | ||
524af0d6 | 3389 | if (!gfc_notify_std (GFC_STD_F2003, "IMPORT statement at %C")) |
8998be20 TB |
3390 | return MATCH_ERROR; |
3391 | ||
3392 | if (gfc_match_eos () == MATCH_YES) | |
3393 | { | |
3394 | /* All host variables should be imported. */ | |
3395 | gfc_current_ns->has_import_set = 1; | |
3396 | return MATCH_YES; | |
3397 | } | |
3398 | ||
3399 | if (gfc_match (" ::") == MATCH_YES) | |
3400 | { | |
3401 | if (gfc_match_eos () == MATCH_YES) | |
636dff67 SK |
3402 | { |
3403 | gfc_error ("Expecting list of named entities at %C"); | |
3404 | return MATCH_ERROR; | |
3405 | } | |
8998be20 TB |
3406 | } |
3407 | ||
3408 | for(;;) | |
3409 | { | |
2e8d9212 | 3410 | sym = NULL; |
8998be20 TB |
3411 | m = gfc_match (" %n", name); |
3412 | switch (m) | |
3413 | { | |
3414 | case MATCH_YES: | |
36d3fb4c | 3415 | if (gfc_current_ns->parent != NULL |
66e4ab31 | 3416 | && gfc_find_symbol (name, gfc_current_ns->parent, 1, &sym)) |
36d3fb4c | 3417 | { |
c4100eae | 3418 | gfc_error ("Type name %qs at %C is ambiguous", name); |
36d3fb4c PT |
3419 | return MATCH_ERROR; |
3420 | } | |
4e2cf5f5 | 3421 | else if (!sym && gfc_current_ns->proc_name->ns->parent != NULL |
66e4ab31 SK |
3422 | && gfc_find_symbol (name, |
3423 | gfc_current_ns->proc_name->ns->parent, | |
3424 | 1, &sym)) | |
636dff67 | 3425 | { |
c4100eae | 3426 | gfc_error ("Type name %qs at %C is ambiguous", name); |
636dff67 SK |
3427 | return MATCH_ERROR; |
3428 | } | |
3429 | ||
3430 | if (sym == NULL) | |
3431 | { | |
c4100eae | 3432 | gfc_error ("Cannot IMPORT %qs from host scoping unit " |
636dff67 SK |
3433 | "at %C - does not exist.", name); |
3434 | return MATCH_ERROR; | |
3435 | } | |
3436 | ||
dd8b9dde | 3437 | if (gfc_find_symtree (gfc_current_ns->sym_root, name)) |
636dff67 | 3438 | { |
db30e21c | 3439 | gfc_warning (0, "%qs is already IMPORTed from host scoping unit " |
48749dbc | 3440 | "at %C", name); |
636dff67 SK |
3441 | goto next_item; |
3442 | } | |
3443 | ||
dd8b9dde | 3444 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); |
636dff67 SK |
3445 | st->n.sym = sym; |
3446 | sym->refs++; | |
5a8af0b4 | 3447 | sym->attr.imported = 1; |
8998be20 | 3448 | |
c3f34952 TB |
3449 | if (sym->attr.generic && (sym = gfc_find_dt_in_generic (sym))) |
3450 | { | |
3451 | /* The actual derived type is stored in a symtree with the first | |
eea58adb | 3452 | letter of the name capitalized; the symtree with the all |
1cc0e193 | 3453 | lower-case name contains the associated generic function. */ |
c3f34952 TB |
3454 | st = gfc_new_symtree (&gfc_current_ns->sym_root, |
3455 | gfc_get_string ("%c%s", | |
dd8b9dde TB |
3456 | (char) TOUPPER ((unsigned char) name[0]), |
3457 | &name[1])); | |
c3f34952 TB |
3458 | st->n.sym = sym; |
3459 | sym->refs++; | |
3460 | sym->attr.imported = 1; | |
3461 | } | |
3462 | ||
8998be20 TB |
3463 | goto next_item; |
3464 | ||
3465 | case MATCH_NO: | |
3466 | break; | |
3467 | ||
3468 | case MATCH_ERROR: | |
3469 | return MATCH_ERROR; | |
3470 | } | |
3471 | ||
3472 | next_item: | |
3473 | if (gfc_match_eos () == MATCH_YES) | |
3474 | break; | |
3475 | if (gfc_match_char (',') != MATCH_YES) | |
3476 | goto syntax; | |
3477 | } | |
3478 | ||
3479 | return MATCH_YES; | |
3480 | ||
3481 | syntax: | |
3482 | gfc_error ("Syntax error in IMPORT statement at %C"); | |
3483 | return MATCH_ERROR; | |
3484 | } | |
e5ddaa24 | 3485 | |
66e4ab31 | 3486 | |
f2449db4 RS |
3487 | /* A minimal implementation of gfc_match without whitespace, escape |
3488 | characters or variable arguments. Returns true if the next | |
3489 | characters match the TARGET template exactly. */ | |
3490 | ||
3491 | static bool | |
3492 | match_string_p (const char *target) | |
3493 | { | |
3494 | const char *p; | |
3495 | ||
3496 | for (p = target; *p; p++) | |
8fc541d3 | 3497 | if ((char) gfc_next_ascii_char () != *p) |
f2449db4 RS |
3498 | return false; |
3499 | return true; | |
3500 | } | |
3501 | ||
6de9cd9a DN |
3502 | /* Matches an attribute specification including array specs. If |
3503 | successful, leaves the variables current_attr and current_as | |
3504 | holding the specification. Also sets the colon_seen variable for | |
3505 | later use by matchers associated with initializations. | |
3506 | ||
3507 | This subroutine is a little tricky in the sense that we don't know | |
3508 | if we really have an attr-spec until we hit the double colon. | |
3509 | Until that time, we can only return MATCH_NO. This forces us to | |
3510 | check for duplicate specification at this level. */ | |
3511 | ||
3512 | static match | |
3513 | match_attr_spec (void) | |
3514 | { | |
6de9cd9a | 3515 | /* Modifiers that can exist in a type statement. */ |
d75d9546 | 3516 | enum |
6de9cd9a DN |
3517 | { GFC_DECL_BEGIN = 0, |
3518 | DECL_ALLOCATABLE = GFC_DECL_BEGIN, DECL_DIMENSION, DECL_EXTERNAL, | |
3519 | DECL_IN, DECL_OUT, DECL_INOUT, DECL_INTRINSIC, DECL_OPTIONAL, | |
ee7e677f TB |
3520 | DECL_PARAMETER, DECL_POINTER, DECL_PROTECTED, DECL_PRIVATE, |
3521 | DECL_PUBLIC, DECL_SAVE, DECL_TARGET, DECL_VALUE, DECL_VOLATILE, | |
fe4e525c TB |
3522 | DECL_IS_BIND_C, DECL_CODIMENSION, DECL_ASYNCHRONOUS, DECL_CONTIGUOUS, |
3523 | DECL_NONE, GFC_DECL_END /* Sentinel */ | |
d75d9546 | 3524 | }; |
6de9cd9a DN |
3525 | |
3526 | /* GFC_DECL_END is the sentinel, index starts at 0. */ | |
3527 | #define NUM_DECL GFC_DECL_END | |
3528 | ||
6de9cd9a DN |
3529 | locus start, seen_at[NUM_DECL]; |
3530 | int seen[NUM_DECL]; | |
09639a83 | 3531 | unsigned int d; |
6de9cd9a DN |
3532 | const char *attr; |
3533 | match m; | |
524af0d6 | 3534 | bool t; |
6de9cd9a DN |
3535 | |
3536 | gfc_clear_attr (¤t_attr); | |
63645982 | 3537 | start = gfc_current_locus; |
6de9cd9a DN |
3538 | |
3539 | current_as = NULL; | |
3540 | colon_seen = 0; | |
3541 | ||
3542 | /* See if we get all of the keywords up to the final double colon. */ | |
3543 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3544 | seen[d] = 0; | |
3545 | ||
3546 | for (;;) | |
3547 | { | |
8fc541d3 | 3548 | char ch; |
a8b3b0b6 | 3549 | |
f2449db4 RS |
3550 | d = DECL_NONE; |
3551 | gfc_gobble_whitespace (); | |
3552 | ||
8fc541d3 | 3553 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
3554 | if (ch == ':') |
3555 | { | |
3556 | /* This is the successful exit condition for the loop. */ | |
8fc541d3 | 3557 | if (gfc_next_ascii_char () == ':') |
f2449db4 RS |
3558 | break; |
3559 | } | |
3560 | else if (ch == ',') | |
a8b3b0b6 | 3561 | { |
a8b3b0b6 | 3562 | gfc_gobble_whitespace (); |
8fc541d3 | 3563 | switch (gfc_peek_ascii_char ()) |
a8b3b0b6 | 3564 | { |
f2449db4 | 3565 | case 'a': |
1eee5628 TB |
3566 | gfc_next_ascii_char (); |
3567 | switch (gfc_next_ascii_char ()) | |
3568 | { | |
3569 | case 'l': | |
3570 | if (match_string_p ("locatable")) | |
3571 | { | |
3572 | /* Matched "allocatable". */ | |
3573 | d = DECL_ALLOCATABLE; | |
3574 | } | |
3575 | break; | |
3576 | ||
3577 | case 's': | |
3578 | if (match_string_p ("ynchronous")) | |
3579 | { | |
3580 | /* Matched "asynchronous". */ | |
3581 | d = DECL_ASYNCHRONOUS; | |
3582 | } | |
3583 | break; | |
3584 | } | |
fe4e525c | 3585 | break; |
f2449db4 RS |
3586 | |
3587 | case 'b': | |
a8b3b0b6 | 3588 | /* Try and match the bind(c). */ |
1eabf70a | 3589 | m = gfc_match_bind_c (NULL, true); |
129d15a3 | 3590 | if (m == MATCH_YES) |
a8b3b0b6 | 3591 | d = DECL_IS_BIND_C; |
129d15a3 JW |
3592 | else if (m == MATCH_ERROR) |
3593 | goto cleanup; | |
f2449db4 RS |
3594 | break; |
3595 | ||
be59db2d | 3596 | case 'c': |
fe4e525c TB |
3597 | gfc_next_ascii_char (); |
3598 | if ('o' != gfc_next_ascii_char ()) | |
3599 | break; | |
3600 | switch (gfc_next_ascii_char ()) | |
3601 | { | |
3602 | case 'd': | |
3603 | if (match_string_p ("imension")) | |
3604 | { | |
3605 | d = DECL_CODIMENSION; | |
3606 | break; | |
3607 | } | |
3608 | case 'n': | |
3609 | if (match_string_p ("tiguous")) | |
3610 | { | |
3611 | d = DECL_CONTIGUOUS; | |
3612 | break; | |
3613 | } | |
3614 | } | |
be59db2d TB |
3615 | break; |
3616 | ||
f2449db4 RS |
3617 | case 'd': |
3618 | if (match_string_p ("dimension")) | |
3619 | d = DECL_DIMENSION; | |
3620 | break; | |
3621 | ||
3622 | case 'e': | |
3623 | if (match_string_p ("external")) | |
3624 | d = DECL_EXTERNAL; | |
3625 | break; | |
3626 | ||
3627 | case 'i': | |
3628 | if (match_string_p ("int")) | |
3629 | { | |
8fc541d3 | 3630 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
3631 | if (ch == 'e') |
3632 | { | |
3633 | if (match_string_p ("nt")) | |
3634 | { | |
3635 | /* Matched "intent". */ | |
3636 | /* TODO: Call match_intent_spec from here. */ | |
3637 | if (gfc_match (" ( in out )") == MATCH_YES) | |
3638 | d = DECL_INOUT; | |
3639 | else if (gfc_match (" ( in )") == MATCH_YES) | |
3640 | d = DECL_IN; | |
3641 | else if (gfc_match (" ( out )") == MATCH_YES) | |
3642 | d = DECL_OUT; | |
3643 | } | |
3644 | } | |
3645 | else if (ch == 'r') | |
3646 | { | |
3647 | if (match_string_p ("insic")) | |
3648 | { | |
3649 | /* Matched "intrinsic". */ | |
3650 | d = DECL_INTRINSIC; | |
3651 | } | |
3652 | } | |
3653 | } | |
3654 | break; | |
3655 | ||
3656 | case 'o': | |
3657 | if (match_string_p ("optional")) | |
3658 | d = DECL_OPTIONAL; | |
3659 | break; | |
3660 | ||
3661 | case 'p': | |
8fc541d3 FXC |
3662 | gfc_next_ascii_char (); |
3663 | switch (gfc_next_ascii_char ()) | |
f2449db4 RS |
3664 | { |
3665 | case 'a': | |
3666 | if (match_string_p ("rameter")) | |
3667 | { | |
3668 | /* Matched "parameter". */ | |
3669 | d = DECL_PARAMETER; | |
3670 | } | |
3671 | break; | |
3672 | ||
3673 | case 'o': | |
3674 | if (match_string_p ("inter")) | |
3675 | { | |
3676 | /* Matched "pointer". */ | |
3677 | d = DECL_POINTER; | |
3678 | } | |
3679 | break; | |
3680 | ||
3681 | case 'r': | |
8fc541d3 | 3682 | ch = gfc_next_ascii_char (); |
f2449db4 RS |
3683 | if (ch == 'i') |
3684 | { | |
3685 | if (match_string_p ("vate")) | |
3686 | { | |
3687 | /* Matched "private". */ | |
3688 | d = DECL_PRIVATE; | |
3689 | } | |
3690 | } | |
3691 | else if (ch == 'o') | |
3692 | { | |
3693 | if (match_string_p ("tected")) | |
3694 | { | |
3695 | /* Matched "protected". */ | |
3696 | d = DECL_PROTECTED; | |
3697 | } | |
3698 | } | |
3699 | break; | |
3700 | ||
3701 | case 'u': | |
3702 | if (match_string_p ("blic")) | |
3703 | { | |
3704 | /* Matched "public". */ | |
3705 | d = DECL_PUBLIC; | |
3706 | } | |
3707 | break; | |
3708 | } | |
3709 | break; | |
3710 | ||
3711 | case 's': | |
3712 | if (match_string_p ("save")) | |
3713 | d = DECL_SAVE; | |
3714 | break; | |
3715 | ||
3716 | case 't': | |
3717 | if (match_string_p ("target")) | |
3718 | d = DECL_TARGET; | |
3719 | break; | |
3720 | ||
3721 | case 'v': | |
8fc541d3 FXC |
3722 | gfc_next_ascii_char (); |
3723 | ch = gfc_next_ascii_char (); | |
f2449db4 RS |
3724 | if (ch == 'a') |
3725 | { | |
3726 | if (match_string_p ("lue")) | |
3727 | { | |
3728 | /* Matched "value". */ | |
3729 | d = DECL_VALUE; | |
3730 | } | |
3731 | } | |
3732 | else if (ch == 'o') | |
3733 | { | |
3734 | if (match_string_p ("latile")) | |
3735 | { | |
3736 | /* Matched "volatile". */ | |
3737 | d = DECL_VOLATILE; | |
3738 | } | |
3739 | } | |
3740 | break; | |
a8b3b0b6 CR |
3741 | } |
3742 | } | |
d468bcdb | 3743 | |
f2449db4 RS |
3744 | /* No double colon and no recognizable decl_type, so assume that |
3745 | we've been looking at something else the whole time. */ | |
3746 | if (d == DECL_NONE) | |
3747 | { | |
3748 | m = MATCH_NO; | |
3749 | goto cleanup; | |
3750 | } | |
d51347f9 | 3751 | |
acb388a0 JD |
3752 | /* Check to make sure any parens are paired up correctly. */ |
3753 | if (gfc_match_parens () == MATCH_ERROR) | |
3754 | { | |
3755 | m = MATCH_ERROR; | |
3756 | goto cleanup; | |
3757 | } | |
3758 | ||
6de9cd9a | 3759 | seen[d]++; |
63645982 | 3760 | seen_at[d] = gfc_current_locus; |
6de9cd9a | 3761 | |
d3a9eea2 | 3762 | if (d == DECL_DIMENSION || d == DECL_CODIMENSION) |
6de9cd9a | 3763 | { |
d3a9eea2 | 3764 | gfc_array_spec *as = NULL; |
6de9cd9a | 3765 | |
d3a9eea2 TB |
3766 | m = gfc_match_array_spec (&as, d == DECL_DIMENSION, |
3767 | d == DECL_CODIMENSION); | |
3768 | ||
3769 | if (current_as == NULL) | |
3770 | current_as = as; | |
3771 | else if (m == MATCH_YES) | |
6de9cd9a | 3772 | { |
524af0d6 | 3773 | if (!merge_array_spec (as, current_as, false)) |
63fbf586 | 3774 | m = MATCH_ERROR; |
cede9502 | 3775 | free (as); |
6de9cd9a DN |
3776 | } |
3777 | ||
be59db2d TB |
3778 | if (m == MATCH_NO) |
3779 | { | |
d3a9eea2 TB |
3780 | if (d == DECL_CODIMENSION) |
3781 | gfc_error ("Missing codimension specification at %C"); | |
3782 | else | |
3783 | gfc_error ("Missing dimension specification at %C"); | |
be59db2d TB |
3784 | m = MATCH_ERROR; |
3785 | } | |
3786 | ||
3787 | if (m == MATCH_ERROR) | |
3788 | goto cleanup; | |
3789 | } | |
6de9cd9a DN |
3790 | } |
3791 | ||
6de9cd9a DN |
3792 | /* Since we've seen a double colon, we have to be looking at an |
3793 | attr-spec. This means that we can now issue errors. */ | |
3794 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3795 | if (seen[d] > 1) | |
3796 | { | |
3797 | switch (d) | |
3798 | { | |
3799 | case DECL_ALLOCATABLE: | |
3800 | attr = "ALLOCATABLE"; | |
3801 | break; | |
1eee5628 TB |
3802 | case DECL_ASYNCHRONOUS: |
3803 | attr = "ASYNCHRONOUS"; | |
3804 | break; | |
be59db2d TB |
3805 | case DECL_CODIMENSION: |
3806 | attr = "CODIMENSION"; | |
3807 | break; | |
fe4e525c TB |
3808 | case DECL_CONTIGUOUS: |
3809 | attr = "CONTIGUOUS"; | |
3810 | break; | |
6de9cd9a DN |
3811 | case DECL_DIMENSION: |
3812 | attr = "DIMENSION"; | |
3813 | break; | |
3814 | case DECL_EXTERNAL: | |
3815 | attr = "EXTERNAL"; | |
3816 | break; | |
3817 | case DECL_IN: | |
3818 | attr = "INTENT (IN)"; | |
3819 | break; | |
3820 | case DECL_OUT: | |
3821 | attr = "INTENT (OUT)"; | |
3822 | break; | |
3823 | case DECL_INOUT: | |
3824 | attr = "INTENT (IN OUT)"; | |
3825 | break; | |
3826 | case DECL_INTRINSIC: | |
3827 | attr = "INTRINSIC"; | |
3828 | break; | |
3829 | case DECL_OPTIONAL: | |
3830 | attr = "OPTIONAL"; | |
3831 | break; | |
3832 | case DECL_PARAMETER: | |
3833 | attr = "PARAMETER"; | |
3834 | break; | |
3835 | case DECL_POINTER: | |
3836 | attr = "POINTER"; | |
3837 | break; | |
ee7e677f TB |
3838 | case DECL_PROTECTED: |
3839 | attr = "PROTECTED"; | |
3840 | break; | |
6de9cd9a DN |
3841 | case DECL_PRIVATE: |
3842 | attr = "PRIVATE"; | |
3843 | break; | |
3844 | case DECL_PUBLIC: | |
3845 | attr = "PUBLIC"; | |
3846 | break; | |
3847 | case DECL_SAVE: | |
3848 | attr = "SAVE"; | |
3849 | break; | |
3850 | case DECL_TARGET: | |
3851 | attr = "TARGET"; | |
3852 | break; | |
a8b3b0b6 CR |
3853 | case DECL_IS_BIND_C: |
3854 | attr = "IS_BIND_C"; | |
3855 | break; | |
3856 | case DECL_VALUE: | |
3857 | attr = "VALUE"; | |
3858 | break; | |
775e6c3a TB |
3859 | case DECL_VOLATILE: |
3860 | attr = "VOLATILE"; | |
3861 | break; | |
6de9cd9a | 3862 | default: |
66e4ab31 | 3863 | attr = NULL; /* This shouldn't happen. */ |
6de9cd9a DN |
3864 | } |
3865 | ||
3866 | gfc_error ("Duplicate %s attribute at %L", attr, &seen_at[d]); | |
3867 | m = MATCH_ERROR; | |
3868 | goto cleanup; | |
3869 | } | |
3870 | ||
3871 | /* Now that we've dealt with duplicate attributes, add the attributes | |
3872 | to the current attribute. */ | |
3873 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3874 | { | |
3875 | if (seen[d] == 0) | |
3876 | continue; | |
3877 | ||
3878 | if (gfc_current_state () == COMP_DERIVED | |
be59db2d TB |
3879 | && d != DECL_DIMENSION && d != DECL_CODIMENSION |
3880 | && d != DECL_POINTER && d != DECL_PRIVATE | |
fe4e525c | 3881 | && d != DECL_PUBLIC && d != DECL_CONTIGUOUS && d != DECL_NONE) |
6de9cd9a | 3882 | { |
5046aff5 PT |
3883 | if (d == DECL_ALLOCATABLE) |
3884 | { | |
524af0d6 JB |
3885 | if (!gfc_notify_std (GFC_STD_F2003, "ALLOCATABLE " |
3886 | "attribute at %C in a TYPE definition")) | |
5046aff5 PT |
3887 | { |
3888 | m = MATCH_ERROR; | |
3889 | goto cleanup; | |
3890 | } | |
636dff67 SK |
3891 | } |
3892 | else | |
5046aff5 PT |
3893 | { |
3894 | gfc_error ("Attribute at %L is not allowed in a TYPE definition", | |
d51347f9 | 3895 | &seen_at[d]); |
5046aff5 PT |
3896 | m = MATCH_ERROR; |
3897 | goto cleanup; | |
3898 | } | |
6de9cd9a DN |
3899 | } |
3900 | ||
4213f93b | 3901 | if ((d == DECL_PRIVATE || d == DECL_PUBLIC) |
636dff67 | 3902 | && gfc_current_state () != COMP_MODULE) |
4213f93b PT |
3903 | { |
3904 | if (d == DECL_PRIVATE) | |
3905 | attr = "PRIVATE"; | |
3906 | else | |
3907 | attr = "PUBLIC"; | |
d51347f9 TB |
3908 | if (gfc_current_state () == COMP_DERIVED |
3909 | && gfc_state_stack->previous | |
3910 | && gfc_state_stack->previous->state == COMP_MODULE) | |
3911 | { | |
524af0d6 JB |
3912 | if (!gfc_notify_std (GFC_STD_F2003, "Attribute %s " |
3913 | "at %L in a TYPE definition", attr, | |
3914 | &seen_at[d])) | |
d51347f9 TB |
3915 | { |
3916 | m = MATCH_ERROR; | |
3917 | goto cleanup; | |
3918 | } | |
3919 | } | |
3920 | else | |
3921 | { | |
3922 | gfc_error ("%s attribute at %L is not allowed outside of the " | |
3923 | "specification part of a module", attr, &seen_at[d]); | |
3924 | m = MATCH_ERROR; | |
3925 | goto cleanup; | |
3926 | } | |
4213f93b PT |
3927 | } |
3928 | ||
6de9cd9a DN |
3929 | switch (d) |
3930 | { | |
3931 | case DECL_ALLOCATABLE: | |
3932 | t = gfc_add_allocatable (¤t_attr, &seen_at[d]); | |
3933 | break; | |
3934 | ||
1eee5628 | 3935 | case DECL_ASYNCHRONOUS: |
524af0d6 JB |
3936 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS attribute at %C")) |
3937 | t = false; | |
1eee5628 TB |
3938 | else |
3939 | t = gfc_add_asynchronous (¤t_attr, NULL, &seen_at[d]); | |
3940 | break; | |
3941 | ||
be59db2d TB |
3942 | case DECL_CODIMENSION: |
3943 | t = gfc_add_codimension (¤t_attr, NULL, &seen_at[d]); | |
3944 | break; | |
3945 | ||
fe4e525c | 3946 | case DECL_CONTIGUOUS: |
524af0d6 JB |
3947 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS attribute at %C")) |
3948 | t = false; | |
fe4e525c TB |
3949 | else |
3950 | t = gfc_add_contiguous (¤t_attr, NULL, &seen_at[d]); | |
3951 | break; | |
3952 | ||
6de9cd9a | 3953 | case DECL_DIMENSION: |
231b2fcc | 3954 | t = gfc_add_dimension (¤t_attr, NULL, &seen_at[d]); |
6de9cd9a DN |
3955 | break; |
3956 | ||
3957 | case DECL_EXTERNAL: | |
3958 | t = gfc_add_external (¤t_attr, &seen_at[d]); | |
3959 | break; | |
3960 | ||
3961 | case DECL_IN: | |
3962 | t = gfc_add_intent (¤t_attr, INTENT_IN, &seen_at[d]); | |
3963 | break; | |
3964 | ||
3965 | case DECL_OUT: | |
3966 | t = gfc_add_intent (¤t_attr, INTENT_OUT, &seen_at[d]); | |
3967 | break; | |
3968 | ||
3969 | case DECL_INOUT: | |
3970 | t = gfc_add_intent (¤t_attr, INTENT_INOUT, &seen_at[d]); | |
3971 | break; | |
3972 | ||
3973 | case DECL_INTRINSIC: | |
3974 | t = gfc_add_intrinsic (¤t_attr, &seen_at[d]); | |
3975 | break; | |
3976 | ||
3977 | case DECL_OPTIONAL: | |
3978 | t = gfc_add_optional (¤t_attr, &seen_at[d]); | |
3979 | break; | |
3980 | ||
3981 | case DECL_PARAMETER: | |
231b2fcc | 3982 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, &seen_at[d]); |
6de9cd9a DN |
3983 | break; |
3984 | ||
3985 | case DECL_POINTER: | |
3986 | t = gfc_add_pointer (¤t_attr, &seen_at[d]); | |
3987 | break; | |
3988 | ||
ee7e677f | 3989 | case DECL_PROTECTED: |
721be0f4 SK |
3990 | if (gfc_current_state () != COMP_MODULE |
3991 | || (gfc_current_ns->proc_name | |
3992 | && gfc_current_ns->proc_name->attr.flavor != FL_MODULE)) | |
ee7e677f TB |
3993 | { |
3994 | gfc_error ("PROTECTED at %C only allowed in specification " | |
3995 | "part of a module"); | |
524af0d6 | 3996 | t = false; |
ee7e677f TB |
3997 | break; |
3998 | } | |
3999 | ||
524af0d6 JB |
4000 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED attribute at %C")) |
4001 | t = false; | |
ee7e677f TB |
4002 | else |
4003 | t = gfc_add_protected (¤t_attr, NULL, &seen_at[d]); | |
4004 | break; | |
4005 | ||
6de9cd9a | 4006 | case DECL_PRIVATE: |
231b2fcc TS |
4007 | t = gfc_add_access (¤t_attr, ACCESS_PRIVATE, NULL, |
4008 | &seen_at[d]); | |
6de9cd9a DN |
4009 | break; |
4010 | ||
4011 | case DECL_PUBLIC: | |
231b2fcc TS |
4012 | t = gfc_add_access (¤t_attr, ACCESS_PUBLIC, NULL, |
4013 | &seen_at[d]); | |
6de9cd9a DN |
4014 | break; |
4015 | ||
4016 | case DECL_SAVE: | |
80f95228 | 4017 | t = gfc_add_save (¤t_attr, SAVE_EXPLICIT, NULL, &seen_at[d]); |
6de9cd9a DN |
4018 | break; |
4019 | ||
4020 | case DECL_TARGET: | |
4021 | t = gfc_add_target (¤t_attr, &seen_at[d]); | |
4022 | break; | |
4023 | ||
a8b3b0b6 CR |
4024 | case DECL_IS_BIND_C: |
4025 | t = gfc_add_is_bind_c(¤t_attr, NULL, &seen_at[d], 0); | |
4026 | break; | |
f5acf0f2 | 4027 | |
06469efd | 4028 | case DECL_VALUE: |
524af0d6 JB |
4029 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE attribute at %C")) |
4030 | t = false; | |
06469efd PT |
4031 | else |
4032 | t = gfc_add_value (¤t_attr, NULL, &seen_at[d]); | |
4033 | break; | |
4034 | ||
775e6c3a | 4035 | case DECL_VOLATILE: |
524af0d6 JB |
4036 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE attribute at %C")) |
4037 | t = false; | |
775e6c3a TB |
4038 | else |
4039 | t = gfc_add_volatile (¤t_attr, NULL, &seen_at[d]); | |
4040 | break; | |
4041 | ||
6de9cd9a DN |
4042 | default: |
4043 | gfc_internal_error ("match_attr_spec(): Bad attribute"); | |
4044 | } | |
4045 | ||
524af0d6 | 4046 | if (!t) |
6de9cd9a DN |
4047 | { |
4048 | m = MATCH_ERROR; | |
4049 | goto cleanup; | |
4050 | } | |
4051 | } | |
4052 | ||
dab2cbf8 | 4053 | /* Since Fortran 2008 module variables implicitly have the SAVE attribute. */ |
4668d6f9 PT |
4054 | if ((gfc_current_state () == COMP_MODULE |
4055 | || gfc_current_state () == COMP_SUBMODULE) | |
4056 | && !current_attr.save | |
dab2cbf8 | 4057 | && (gfc_option.allow_std & GFC_STD_F2008) != 0) |
80f95228 JW |
4058 | current_attr.save = SAVE_IMPLICIT; |
4059 | ||
6de9cd9a DN |
4060 | colon_seen = 1; |
4061 | return MATCH_YES; | |
4062 | ||
4063 | cleanup: | |
63645982 | 4064 | gfc_current_locus = start; |
6de9cd9a DN |
4065 | gfc_free_array_spec (current_as); |
4066 | current_as = NULL; | |
4067 | return m; | |
4068 | } | |
4069 | ||
4070 | ||
a8b3b0b6 CR |
4071 | /* Set the binding label, dest_label, either with the binding label |
4072 | stored in the given gfc_typespec, ts, or if none was provided, it | |
4073 | will be the symbol name in all lower case, as required by the draft | |
4074 | (J3/04-007, section 15.4.1). If a binding label was given and | |
4075 | there is more than one argument (num_idents), it is an error. */ | |
4076 | ||
524af0d6 | 4077 | static bool |
f5acf0f2 | 4078 | set_binding_label (const char **dest_label, const char *sym_name, |
9975a30b | 4079 | int num_idents) |
a8b3b0b6 | 4080 | { |
ad4a2f64 | 4081 | if (num_idents > 1 && has_name_equals) |
a8b3b0b6 | 4082 | { |
ad4a2f64 TB |
4083 | gfc_error ("Multiple identifiers provided with " |
4084 | "single NAME= specifier at %C"); | |
524af0d6 | 4085 | return false; |
ad4a2f64 | 4086 | } |
a8b3b0b6 | 4087 | |
62603fae | 4088 | if (curr_binding_label) |
eea58adb | 4089 | /* Binding label given; store in temp holder till have sym. */ |
62603fae | 4090 | *dest_label = curr_binding_label; |
a8b3b0b6 CR |
4091 | else |
4092 | { | |
4093 | /* No binding label given, and the NAME= specifier did not exist, | |
4094 | which means there was no NAME="". */ | |
4095 | if (sym_name != NULL && has_name_equals == 0) | |
62603fae | 4096 | *dest_label = IDENTIFIER_POINTER (get_identifier (sym_name)); |
a8b3b0b6 | 4097 | } |
f5acf0f2 | 4098 | |
524af0d6 | 4099 | return true; |
a8b3b0b6 CR |
4100 | } |
4101 | ||
4102 | ||
4103 | /* Set the status of the given common block as being BIND(C) or not, | |
4104 | depending on the given parameter, is_bind_c. */ | |
4105 | ||
4106 | void | |
4107 | set_com_block_bind_c (gfc_common_head *com_block, int is_bind_c) | |
4108 | { | |
4109 | com_block->is_bind_c = is_bind_c; | |
4110 | return; | |
4111 | } | |
4112 | ||
4113 | ||
4114 | /* Verify that the given gfc_typespec is for a C interoperable type. */ | |
4115 | ||
524af0d6 | 4116 | bool |
00820a2a | 4117 | gfc_verify_c_interop (gfc_typespec *ts) |
a8b3b0b6 | 4118 | { |
bc21d315 | 4119 | if (ts->type == BT_DERIVED && ts->u.derived != NULL) |
ba3721c1 | 4120 | return (ts->u.derived->ts.is_c_interop || ts->u.derived->attr.is_bind_c) |
524af0d6 | 4121 | ? true : false; |
00820a2a | 4122 | else if (ts->type == BT_CLASS) |
524af0d6 | 4123 | return false; |
45a69325 | 4124 | else if (ts->is_c_interop != 1 && ts->type != BT_ASSUMED) |
524af0d6 | 4125 | return false; |
45a69325 | 4126 | |
524af0d6 | 4127 | return true; |
a8b3b0b6 CR |
4128 | } |
4129 | ||
4130 | ||
4131 | /* Verify that the variables of a given common block, which has been | |
4132 | defined with the attribute specifier bind(c), to be of a C | |
4133 | interoperable type. Errors will be reported here, if | |
4134 | encountered. */ | |
4135 | ||
524af0d6 | 4136 | bool |
a8b3b0b6 CR |
4137 | verify_com_block_vars_c_interop (gfc_common_head *com_block) |
4138 | { | |
4139 | gfc_symbol *curr_sym = NULL; | |
524af0d6 | 4140 | bool retval = true; |
a8b3b0b6 CR |
4141 | |
4142 | curr_sym = com_block->head; | |
f5acf0f2 | 4143 | |
a8b3b0b6 CR |
4144 | /* Make sure we have at least one symbol. */ |
4145 | if (curr_sym == NULL) | |
4146 | return retval; | |
4147 | ||
4148 | /* Here we know we have a symbol, so we'll execute this loop | |
4149 | at least once. */ | |
4150 | do | |
4151 | { | |
4152 | /* The second to last param, 1, says this is in a common block. */ | |
4153 | retval = verify_bind_c_sym (curr_sym, &(curr_sym->ts), 1, com_block); | |
4154 | curr_sym = curr_sym->common_next; | |
f5acf0f2 | 4155 | } while (curr_sym != NULL); |
a8b3b0b6 CR |
4156 | |
4157 | return retval; | |
4158 | } | |
4159 | ||
4160 | ||
4161 | /* Verify that a given BIND(C) symbol is C interoperable. If it is not, | |
4162 | an appropriate error message is reported. */ | |
4163 | ||
524af0d6 | 4164 | bool |
a8b3b0b6 CR |
4165 | verify_bind_c_sym (gfc_symbol *tmp_sym, gfc_typespec *ts, |
4166 | int is_in_common, gfc_common_head *com_block) | |
4167 | { | |
8327f9c2 | 4168 | bool bind_c_function = false; |
524af0d6 | 4169 | bool retval = true; |
d8fa96e0 | 4170 | |
8327f9c2 TB |
4171 | if (tmp_sym->attr.function && tmp_sym->attr.is_bind_c) |
4172 | bind_c_function = true; | |
4173 | ||
d8fa96e0 CR |
4174 | if (tmp_sym->attr.function && tmp_sym->result != NULL) |
4175 | { | |
4176 | tmp_sym = tmp_sym->result; | |
4177 | /* Make sure it wasn't an implicitly typed result. */ | |
4daa149b | 4178 | if (tmp_sym->attr.implicit_type && warn_c_binding_type) |
d8fa96e0 | 4179 | { |
48749dbc MLI |
4180 | gfc_warning (OPT_Wc_binding_type, |
4181 | "Implicitly declared BIND(C) function %qs at " | |
d8fa96e0 CR |
4182 | "%L may not be C interoperable", tmp_sym->name, |
4183 | &tmp_sym->declared_at); | |
4184 | tmp_sym->ts.f90_type = tmp_sym->ts.type; | |
4185 | /* Mark it as C interoperable to prevent duplicate warnings. */ | |
4186 | tmp_sym->ts.is_c_interop = 1; | |
4187 | tmp_sym->attr.is_c_interop = 1; | |
4188 | } | |
4189 | } | |
8327f9c2 | 4190 | |
a8b3b0b6 CR |
4191 | /* Here, we know we have the bind(c) attribute, so if we have |
4192 | enough type info, then verify that it's a C interop kind. | |
4193 | The info could be in the symbol already, or possibly still in | |
4194 | the given ts (current_ts), so look in both. */ | |
f5acf0f2 | 4195 | if (tmp_sym->ts.type != BT_UNKNOWN || ts->type != BT_UNKNOWN) |
a8b3b0b6 | 4196 | { |
524af0d6 | 4197 | if (!gfc_verify_c_interop (&(tmp_sym->ts))) |
a8b3b0b6 CR |
4198 | { |
4199 | /* See if we're dealing with a sym in a common block or not. */ | |
4daa149b | 4200 | if (is_in_common == 1 && warn_c_binding_type) |
a8b3b0b6 | 4201 | { |
48749dbc MLI |
4202 | gfc_warning (OPT_Wc_binding_type, |
4203 | "Variable %qs in common block %qs at %L " | |
a8b3b0b6 | 4204 | "may not be a C interoperable " |
48749dbc | 4205 | "kind though common block %qs is BIND(C)", |
a8b3b0b6 CR |
4206 | tmp_sym->name, com_block->name, |
4207 | &(tmp_sym->declared_at), com_block->name); | |
4208 | } | |
4209 | else | |
4210 | { | |
4211 | if (tmp_sym->ts.type == BT_DERIVED || ts->type == BT_DERIVED) | |
c4100eae | 4212 | gfc_error ("Type declaration %qs at %L is not C " |
a8b3b0b6 CR |
4213 | "interoperable but it is BIND(C)", |
4214 | tmp_sym->name, &(tmp_sym->declared_at)); | |
4daa149b | 4215 | else if (warn_c_binding_type) |
48749dbc | 4216 | gfc_warning (OPT_Wc_binding_type, "Variable %qs at %L " |
a8b3b0b6 | 4217 | "may not be a C interoperable " |
c4100eae | 4218 | "kind but it is BIND(C)", |
a8b3b0b6 CR |
4219 | tmp_sym->name, &(tmp_sym->declared_at)); |
4220 | } | |
4221 | } | |
f5acf0f2 | 4222 | |
a8b3b0b6 CR |
4223 | /* Variables declared w/in a common block can't be bind(c) |
4224 | since there's no way for C to see these variables, so there's | |
4225 | semantically no reason for the attribute. */ | |
4226 | if (is_in_common == 1 && tmp_sym->attr.is_bind_c == 1) | |
4227 | { | |
c4100eae | 4228 | gfc_error ("Variable %qs in common block %qs at " |
a8b3b0b6 CR |
4229 | "%L cannot be declared with BIND(C) " |
4230 | "since it is not a global", | |
4231 | tmp_sym->name, com_block->name, | |
4232 | &(tmp_sym->declared_at)); | |
524af0d6 | 4233 | retval = false; |
a8b3b0b6 | 4234 | } |
f5acf0f2 | 4235 | |
a8b3b0b6 CR |
4236 | /* Scalar variables that are bind(c) can not have the pointer |
4237 | or allocatable attributes. */ | |
4238 | if (tmp_sym->attr.is_bind_c == 1) | |
4239 | { | |
4240 | if (tmp_sym->attr.pointer == 1) | |
4241 | { | |
c4100eae | 4242 | gfc_error ("Variable %qs at %L cannot have both the " |
a8b3b0b6 CR |
4243 | "POINTER and BIND(C) attributes", |
4244 | tmp_sym->name, &(tmp_sym->declared_at)); | |
524af0d6 | 4245 | retval = false; |
a8b3b0b6 CR |
4246 | } |
4247 | ||
4248 | if (tmp_sym->attr.allocatable == 1) | |
4249 | { | |
c4100eae | 4250 | gfc_error ("Variable %qs at %L cannot have both the " |
a8b3b0b6 CR |
4251 | "ALLOCATABLE and BIND(C) attributes", |
4252 | tmp_sym->name, &(tmp_sym->declared_at)); | |
524af0d6 | 4253 | retval = false; |
a8b3b0b6 CR |
4254 | } |
4255 | ||
8327f9c2 TB |
4256 | } |
4257 | ||
4258 | /* If it is a BIND(C) function, make sure the return value is a | |
4259 | scalar value. The previous tests in this function made sure | |
4260 | the type is interoperable. */ | |
4261 | if (bind_c_function && tmp_sym->as != NULL) | |
c4100eae | 4262 | gfc_error ("Return type of BIND(C) function %qs at %L cannot " |
8327f9c2 TB |
4263 | "be an array", tmp_sym->name, &(tmp_sym->declared_at)); |
4264 | ||
4265 | /* BIND(C) functions can not return a character string. */ | |
4266 | if (bind_c_function && tmp_sym->ts.type == BT_CHARACTER) | |
bc21d315 JW |
4267 | if (tmp_sym->ts.u.cl == NULL || tmp_sym->ts.u.cl->length == NULL |
4268 | || tmp_sym->ts.u.cl->length->expr_type != EXPR_CONSTANT | |
4269 | || mpz_cmp_si (tmp_sym->ts.u.cl->length->value.integer, 1) != 0) | |
c4100eae | 4270 | gfc_error ("Return type of BIND(C) function %qs at %L cannot " |
a8b3b0b6 CR |
4271 | "be a character string", tmp_sym->name, |
4272 | &(tmp_sym->declared_at)); | |
a8b3b0b6 CR |
4273 | } |
4274 | ||
4275 | /* See if the symbol has been marked as private. If it has, make sure | |
4276 | there is no binding label and warn the user if there is one. */ | |
4277 | if (tmp_sym->attr.access == ACCESS_PRIVATE | |
62603fae | 4278 | && tmp_sym->binding_label) |
a8b3b0b6 CR |
4279 | /* Use gfc_warning_now because we won't say that the symbol fails |
4280 | just because of this. */ | |
db30e21c | 4281 | gfc_warning_now (0, "Symbol %qs at %L is marked PRIVATE but has been " |
4daa149b | 4282 | "given the binding label %qs", tmp_sym->name, |
a8b3b0b6 CR |
4283 | &(tmp_sym->declared_at), tmp_sym->binding_label); |
4284 | ||
4285 | return retval; | |
4286 | } | |
4287 | ||
4288 | ||
4289 | /* Set the appropriate fields for a symbol that's been declared as | |
4290 | BIND(C) (the is_bind_c flag and the binding label), and verify that | |
4291 | the type is C interoperable. Errors are reported by the functions | |
4292 | used to set/test these fields. */ | |
4293 | ||
524af0d6 | 4294 | bool |
a8b3b0b6 CR |
4295 | set_verify_bind_c_sym (gfc_symbol *tmp_sym, int num_idents) |
4296 | { | |
524af0d6 | 4297 | bool retval = true; |
f5acf0f2 | 4298 | |
a8b3b0b6 CR |
4299 | /* TODO: Do we need to make sure the vars aren't marked private? */ |
4300 | ||
4301 | /* Set the is_bind_c bit in symbol_attribute. */ | |
4302 | gfc_add_is_bind_c (&(tmp_sym->attr), tmp_sym->name, &gfc_current_locus, 0); | |
4303 | ||
524af0d6 JB |
4304 | if (!set_binding_label (&tmp_sym->binding_label, tmp_sym->name, num_idents)) |
4305 | return false; | |
a8b3b0b6 CR |
4306 | |
4307 | return retval; | |
4308 | } | |
4309 | ||
4310 | ||
4311 | /* Set the fields marking the given common block as BIND(C), including | |
4312 | a binding label, and report any errors encountered. */ | |
4313 | ||
524af0d6 | 4314 | bool |
a8b3b0b6 CR |
4315 | set_verify_bind_c_com_block (gfc_common_head *com_block, int num_idents) |
4316 | { | |
524af0d6 | 4317 | bool retval = true; |
f5acf0f2 | 4318 | |
a8b3b0b6 | 4319 | /* destLabel, common name, typespec (which may have binding label). */ |
524af0d6 JB |
4320 | if (!set_binding_label (&com_block->binding_label, com_block->name, |
4321 | num_idents)) | |
4322 | return false; | |
a8b3b0b6 CR |
4323 | |
4324 | /* Set the given common block (com_block) to being bind(c) (1). */ | |
4325 | set_com_block_bind_c (com_block, 1); | |
4326 | ||
4327 | return retval; | |
4328 | } | |
4329 | ||
4330 | ||
4331 | /* Retrieve the list of one or more identifiers that the given bind(c) | |
4332 | attribute applies to. */ | |
4333 | ||
524af0d6 | 4334 | bool |
a8b3b0b6 CR |
4335 | get_bind_c_idents (void) |
4336 | { | |
4337 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4338 | int num_idents = 0; | |
4339 | gfc_symbol *tmp_sym = NULL; | |
4340 | match found_id; | |
4341 | gfc_common_head *com_block = NULL; | |
f5acf0f2 | 4342 | |
a8b3b0b6 CR |
4343 | if (gfc_match_name (name) == MATCH_YES) |
4344 | { | |
4345 | found_id = MATCH_YES; | |
4346 | gfc_get_ha_symbol (name, &tmp_sym); | |
4347 | } | |
4348 | else if (match_common_name (name) == MATCH_YES) | |
4349 | { | |
4350 | found_id = MATCH_YES; | |
4351 | com_block = gfc_get_common (name, 0); | |
4352 | } | |
4353 | else | |
4354 | { | |
4355 | gfc_error ("Need either entity or common block name for " | |
4356 | "attribute specification statement at %C"); | |
524af0d6 | 4357 | return false; |
a8b3b0b6 | 4358 | } |
f5acf0f2 | 4359 | |
a8b3b0b6 CR |
4360 | /* Save the current identifier and look for more. */ |
4361 | do | |
4362 | { | |
4363 | /* Increment the number of identifiers found for this spec stmt. */ | |
4364 | num_idents++; | |
4365 | ||
4366 | /* Make sure we have a sym or com block, and verify that it can | |
4367 | be bind(c). Set the appropriate field(s) and look for more | |
4368 | identifiers. */ | |
f5acf0f2 | 4369 | if (tmp_sym != NULL || com_block != NULL) |
a8b3b0b6 CR |
4370 | { |
4371 | if (tmp_sym != NULL) | |
4372 | { | |
524af0d6 JB |
4373 | if (!set_verify_bind_c_sym (tmp_sym, num_idents)) |
4374 | return false; | |
a8b3b0b6 CR |
4375 | } |
4376 | else | |
4377 | { | |
524af0d6 JB |
4378 | if (!set_verify_bind_c_com_block (com_block, num_idents)) |
4379 | return false; | |
a8b3b0b6 | 4380 | } |
f5acf0f2 | 4381 | |
a8b3b0b6 CR |
4382 | /* Look to see if we have another identifier. */ |
4383 | tmp_sym = NULL; | |
4384 | if (gfc_match_eos () == MATCH_YES) | |
4385 | found_id = MATCH_NO; | |
4386 | else if (gfc_match_char (',') != MATCH_YES) | |
4387 | found_id = MATCH_NO; | |
4388 | else if (gfc_match_name (name) == MATCH_YES) | |
4389 | { | |
4390 | found_id = MATCH_YES; | |
4391 | gfc_get_ha_symbol (name, &tmp_sym); | |
4392 | } | |
4393 | else if (match_common_name (name) == MATCH_YES) | |
4394 | { | |
4395 | found_id = MATCH_YES; | |
4396 | com_block = gfc_get_common (name, 0); | |
4397 | } | |
4398 | else | |
4399 | { | |
4400 | gfc_error ("Missing entity or common block name for " | |
4401 | "attribute specification statement at %C"); | |
524af0d6 | 4402 | return false; |
a8b3b0b6 CR |
4403 | } |
4404 | } | |
4405 | else | |
4406 | { | |
4407 | gfc_internal_error ("Missing symbol"); | |
4408 | } | |
4409 | } while (found_id == MATCH_YES); | |
4410 | ||
4411 | /* if we get here we were successful */ | |
524af0d6 | 4412 | return true; |
a8b3b0b6 CR |
4413 | } |
4414 | ||
4415 | ||
4416 | /* Try and match a BIND(C) attribute specification statement. */ | |
f5acf0f2 | 4417 | |
a8b3b0b6 CR |
4418 | match |
4419 | gfc_match_bind_c_stmt (void) | |
4420 | { | |
4421 | match found_match = MATCH_NO; | |
4422 | gfc_typespec *ts; | |
4423 | ||
4424 | ts = ¤t_ts; | |
f5acf0f2 | 4425 | |
a8b3b0b6 CR |
4426 | /* This may not be necessary. */ |
4427 | gfc_clear_ts (ts); | |
4428 | /* Clear the temporary binding label holder. */ | |
62603fae | 4429 | curr_binding_label = NULL; |
a8b3b0b6 CR |
4430 | |
4431 | /* Look for the bind(c). */ | |
1eabf70a | 4432 | found_match = gfc_match_bind_c (NULL, true); |
a8b3b0b6 CR |
4433 | |
4434 | if (found_match == MATCH_YES) | |
4435 | { | |
878cdb7b TB |
4436 | if (!gfc_notify_std (GFC_STD_F2003, "BIND(C) statement at %C")) |
4437 | return MATCH_ERROR; | |
4438 | ||
a8b3b0b6 CR |
4439 | /* Look for the :: now, but it is not required. */ |
4440 | gfc_match (" :: "); | |
4441 | ||
4442 | /* Get the identifier(s) that needs to be updated. This may need to | |
4443 | change to hand the flag(s) for the attr specified so all identifiers | |
4444 | found can have all appropriate parts updated (assuming that the same | |
4445 | spec stmt can have multiple attrs, such as both bind(c) and | |
4446 | allocatable...). */ | |
524af0d6 | 4447 | if (!get_bind_c_idents ()) |
a8b3b0b6 CR |
4448 | /* Error message should have printed already. */ |
4449 | return MATCH_ERROR; | |
4450 | } | |
4451 | ||
4452 | return found_match; | |
4453 | } | |
4454 | ||
4455 | ||
6de9cd9a DN |
4456 | /* Match a data declaration statement. */ |
4457 | ||
4458 | match | |
4459 | gfc_match_data_decl (void) | |
4460 | { | |
4461 | gfc_symbol *sym; | |
4462 | match m; | |
949d5b72 | 4463 | int elem; |
6de9cd9a | 4464 | |
a8b3b0b6 | 4465 | num_idents_on_line = 0; |
f5acf0f2 | 4466 | |
e74f1cc8 | 4467 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
6de9cd9a DN |
4468 | if (m != MATCH_YES) |
4469 | return m; | |
4470 | ||
2e23972e JW |
4471 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
4472 | && gfc_current_state () != COMP_DERIVED) | |
6de9cd9a | 4473 | { |
bc21d315 | 4474 | sym = gfc_use_derived (current_ts.u.derived); |
6de9cd9a DN |
4475 | |
4476 | if (sym == NULL) | |
4477 | { | |
4478 | m = MATCH_ERROR; | |
4479 | goto cleanup; | |
4480 | } | |
4481 | ||
bc21d315 | 4482 | current_ts.u.derived = sym; |
6de9cd9a DN |
4483 | } |
4484 | ||
4485 | m = match_attr_spec (); | |
4486 | if (m == MATCH_ERROR) | |
4487 | { | |
4488 | m = MATCH_NO; | |
4489 | goto cleanup; | |
4490 | } | |
4491 | ||
8b704316 PT |
4492 | if (current_ts.type == BT_CLASS |
4493 | && current_ts.u.derived->attr.unlimited_polymorphic) | |
4494 | goto ok; | |
4495 | ||
2e23972e JW |
4496 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
4497 | && current_ts.u.derived->components == NULL | |
bc21d315 | 4498 | && !current_ts.u.derived->attr.zero_comp) |
6de9cd9a DN |
4499 | { |
4500 | ||
4501 | if (current_attr.pointer && gfc_current_state () == COMP_DERIVED) | |
4502 | goto ok; | |
4503 | ||
bc21d315 | 4504 | gfc_find_symbol (current_ts.u.derived->name, |
dd8b9dde | 4505 | current_ts.u.derived->ns, 1, &sym); |
6de9cd9a | 4506 | |
976e21f6 | 4507 | /* Any symbol that we find had better be a type definition |
636dff67 | 4508 | which has its components defined. */ |
976e21f6 | 4509 | if (sym != NULL && sym->attr.flavor == FL_DERIVED |
bc21d315 JW |
4510 | && (current_ts.u.derived->components != NULL |
4511 | || current_ts.u.derived->attr.zero_comp)) | |
6de9cd9a DN |
4512 | goto ok; |
4513 | ||
a1b80ec7 JW |
4514 | gfc_error ("Derived type at %C has not been previously defined " |
4515 | "and so cannot appear in a derived type definition"); | |
4516 | m = MATCH_ERROR; | |
4517 | goto cleanup; | |
6de9cd9a DN |
4518 | } |
4519 | ||
4520 | ok: | |
4521 | /* If we have an old-style character declaration, and no new-style | |
4522 | attribute specifications, then there a comma is optional between | |
4523 | the type specification and the variable list. */ | |
4524 | if (m == MATCH_NO && current_ts.type == BT_CHARACTER && old_char_selector) | |
4525 | gfc_match_char (','); | |
4526 | ||
949d5b72 PT |
4527 | /* Give the types/attributes to symbols that follow. Give the element |
4528 | a number so that repeat character length expressions can be copied. */ | |
4529 | elem = 1; | |
6de9cd9a DN |
4530 | for (;;) |
4531 | { | |
a8b3b0b6 | 4532 | num_idents_on_line++; |
949d5b72 | 4533 | m = variable_decl (elem++); |
6de9cd9a DN |
4534 | if (m == MATCH_ERROR) |
4535 | goto cleanup; | |
4536 | if (m == MATCH_NO) | |
4537 | break; | |
4538 | ||
4539 | if (gfc_match_eos () == MATCH_YES) | |
4540 | goto cleanup; | |
4541 | if (gfc_match_char (',') != MATCH_YES) | |
4542 | break; | |
4543 | } | |
4544 | ||
0f447a6e | 4545 | if (!gfc_error_flag_test ()) |
8f81c3c6 | 4546 | gfc_error ("Syntax error in data declaration at %C"); |
6de9cd9a DN |
4547 | m = MATCH_ERROR; |
4548 | ||
a9f6f1f2 JD |
4549 | gfc_free_data_all (gfc_current_ns); |
4550 | ||
6de9cd9a DN |
4551 | cleanup: |
4552 | gfc_free_array_spec (current_as); | |
4553 | current_as = NULL; | |
4554 | return m; | |
4555 | } | |
4556 | ||
4557 | ||
4558 | /* Match a prefix associated with a function or subroutine | |
4559 | declaration. If the typespec pointer is nonnull, then a typespec | |
4560 | can be matched. Note that if nothing matches, MATCH_YES is | |
4561 | returned (the null string was matched). */ | |
4562 | ||
1c8bcdf7 PT |
4563 | match |
4564 | gfc_match_prefix (gfc_typespec *ts) | |
6de9cd9a | 4565 | { |
7389bce6 | 4566 | bool seen_type; |
e6c14898 DK |
4567 | bool seen_impure; |
4568 | bool found_prefix; | |
6de9cd9a DN |
4569 | |
4570 | gfc_clear_attr (¤t_attr); | |
e6c14898 DK |
4571 | seen_type = false; |
4572 | seen_impure = false; | |
6de9cd9a | 4573 | |
3df684e2 DK |
4574 | gcc_assert (!gfc_matching_prefix); |
4575 | gfc_matching_prefix = true; | |
f37e928c | 4576 | |
e6c14898 | 4577 | do |
6de9cd9a | 4578 | { |
e6c14898 | 4579 | found_prefix = false; |
6de9cd9a | 4580 | |
e6c14898 DK |
4581 | if (!seen_type && ts != NULL |
4582 | && gfc_match_decl_type_spec (ts, 0) == MATCH_YES | |
4583 | && gfc_match_space () == MATCH_YES) | |
4584 | { | |
6de9cd9a | 4585 | |
e6c14898 DK |
4586 | seen_type = true; |
4587 | found_prefix = true; | |
4588 | } | |
4589 | ||
4590 | if (gfc_match ("elemental% ") == MATCH_YES) | |
4591 | { | |
524af0d6 | 4592 | if (!gfc_add_elemental (¤t_attr, NULL)) |
e6c14898 DK |
4593 | goto error; |
4594 | ||
4595 | found_prefix = true; | |
4596 | } | |
4597 | ||
4598 | if (gfc_match ("pure% ") == MATCH_YES) | |
4599 | { | |
524af0d6 | 4600 | if (!gfc_add_pure (¤t_attr, NULL)) |
e6c14898 DK |
4601 | goto error; |
4602 | ||
4603 | found_prefix = true; | |
4604 | } | |
6de9cd9a | 4605 | |
e6c14898 DK |
4606 | if (gfc_match ("recursive% ") == MATCH_YES) |
4607 | { | |
524af0d6 | 4608 | if (!gfc_add_recursive (¤t_attr, NULL)) |
e6c14898 DK |
4609 | goto error; |
4610 | ||
4611 | found_prefix = true; | |
4612 | } | |
4613 | ||
4614 | /* IMPURE is a somewhat special case, as it needs not set an actual | |
4615 | attribute but rather only prevents ELEMENTAL routines from being | |
4616 | automatically PURE. */ | |
4617 | if (gfc_match ("impure% ") == MATCH_YES) | |
4618 | { | |
524af0d6 | 4619 | if (!gfc_notify_std (GFC_STD_F2008, "IMPURE procedure at %C")) |
e6c14898 DK |
4620 | goto error; |
4621 | ||
4622 | seen_impure = true; | |
4623 | found_prefix = true; | |
4624 | } | |
6de9cd9a | 4625 | } |
e6c14898 | 4626 | while (found_prefix); |
6de9cd9a | 4627 | |
e6c14898 DK |
4628 | /* IMPURE and PURE must not both appear, of course. */ |
4629 | if (seen_impure && current_attr.pure) | |
6de9cd9a | 4630 | { |
e6c14898 DK |
4631 | gfc_error ("PURE and IMPURE must not appear both at %C"); |
4632 | goto error; | |
6de9cd9a DN |
4633 | } |
4634 | ||
e6c14898 DK |
4635 | /* If IMPURE it not seen but the procedure is ELEMENTAL, mark it as PURE. */ |
4636 | if (!seen_impure && current_attr.elemental && !current_attr.pure) | |
6de9cd9a | 4637 | { |
524af0d6 | 4638 | if (!gfc_add_pure (¤t_attr, NULL)) |
f37e928c | 4639 | goto error; |
6de9cd9a DN |
4640 | } |
4641 | ||
4642 | /* At this point, the next item is not a prefix. */ | |
3df684e2 | 4643 | gcc_assert (gfc_matching_prefix); |
4668d6f9 PT |
4644 | |
4645 | /* MODULE should be the last prefix before FUNCTION or SUBROUTINE. | |
4646 | Since this is a prefix like PURE, ELEMENTAL, etc., having a | |
4647 | corresponding attribute seems natural and distinguishes these | |
4648 | procedures from procedure types of PROC_MODULE, which these are | |
4649 | as well. */ | |
4650 | if ((gfc_current_state () == COMP_INTERFACE | |
4651 | || gfc_current_state () == COMP_CONTAINS) | |
4652 | && gfc_match ("module% ") == MATCH_YES) | |
4653 | { | |
4654 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE prefix at %C")) | |
4655 | goto error; | |
4656 | else | |
4657 | current_attr.module_procedure = 1; | |
4658 | } | |
4659 | ||
3df684e2 | 4660 | gfc_matching_prefix = false; |
6de9cd9a | 4661 | return MATCH_YES; |
f37e928c DK |
4662 | |
4663 | error: | |
3df684e2 DK |
4664 | gcc_assert (gfc_matching_prefix); |
4665 | gfc_matching_prefix = false; | |
f37e928c | 4666 | return MATCH_ERROR; |
6de9cd9a DN |
4667 | } |
4668 | ||
4669 | ||
1c8bcdf7 | 4670 | /* Copy attributes matched by gfc_match_prefix() to attributes on a symbol. */ |
6de9cd9a | 4671 | |
524af0d6 | 4672 | static bool |
636dff67 | 4673 | copy_prefix (symbol_attribute *dest, locus *where) |
6de9cd9a | 4674 | { |
524af0d6 JB |
4675 | if (current_attr.pure && !gfc_add_pure (dest, where)) |
4676 | return false; | |
6de9cd9a | 4677 | |
524af0d6 JB |
4678 | if (current_attr.elemental && !gfc_add_elemental (dest, where)) |
4679 | return false; | |
6de9cd9a | 4680 | |
524af0d6 JB |
4681 | if (current_attr.recursive && !gfc_add_recursive (dest, where)) |
4682 | return false; | |
6de9cd9a | 4683 | |
524af0d6 | 4684 | return true; |
6de9cd9a DN |
4685 | } |
4686 | ||
4687 | ||
4688 | /* Match a formal argument list. */ | |
4689 | ||
4690 | match | |
636dff67 | 4691 | gfc_match_formal_arglist (gfc_symbol *progname, int st_flag, int null_flag) |
6de9cd9a DN |
4692 | { |
4693 | gfc_formal_arglist *head, *tail, *p, *q; | |
4694 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4695 | gfc_symbol *sym; | |
4696 | match m; | |
4668d6f9 | 4697 | gfc_formal_arglist *formal = NULL; |
6de9cd9a DN |
4698 | |
4699 | head = tail = NULL; | |
4700 | ||
4668d6f9 PT |
4701 | /* Keep the interface formal argument list and null it so that the |
4702 | matching for the new declaration can be done. The numbers and | |
4703 | names of the arguments are checked here. The interface formal | |
4704 | arguments are retained in formal_arglist and the characteristics | |
4705 | are compared in resolve.c(resolve_fl_procedure). See the remark | |
4706 | in get_proc_name about the eventual need to copy the formal_arglist | |
4707 | and populate the formal namespace of the interface symbol. */ | |
4708 | if (progname->attr.module_procedure | |
4709 | && progname->attr.host_assoc) | |
4710 | { | |
4711 | formal = progname->formal; | |
4712 | progname->formal = NULL; | |
4713 | } | |
4714 | ||
6de9cd9a DN |
4715 | if (gfc_match_char ('(') != MATCH_YES) |
4716 | { | |
4717 | if (null_flag) | |
4718 | goto ok; | |
4719 | return MATCH_NO; | |
4720 | } | |
4721 | ||
4722 | if (gfc_match_char (')') == MATCH_YES) | |
4723 | goto ok; | |
4724 | ||
4725 | for (;;) | |
4726 | { | |
4727 | if (gfc_match_char ('*') == MATCH_YES) | |
9362a03b JW |
4728 | { |
4729 | sym = NULL; | |
524af0d6 JB |
4730 | if (!gfc_notify_std (GFC_STD_F95_OBS, "Alternate-return argument " |
4731 | "at %C")) | |
9362a03b JW |
4732 | { |
4733 | m = MATCH_ERROR; | |
4734 | goto cleanup; | |
4735 | } | |
4736 | } | |
6de9cd9a DN |
4737 | else |
4738 | { | |
4739 | m = gfc_match_name (name); | |
4740 | if (m != MATCH_YES) | |
4741 | goto cleanup; | |
4742 | ||
4743 | if (gfc_get_symbol (name, NULL, &sym)) | |
4744 | goto cleanup; | |
4745 | } | |
4746 | ||
4747 | p = gfc_get_formal_arglist (); | |
4748 | ||
4749 | if (head == NULL) | |
4750 | head = tail = p; | |
4751 | else | |
4752 | { | |
4753 | tail->next = p; | |
4754 | tail = p; | |
4755 | } | |
4756 | ||
4757 | tail->sym = sym; | |
4758 | ||
4759 | /* We don't add the VARIABLE flavor because the name could be a | |
636dff67 SK |
4760 | dummy procedure. We don't apply these attributes to formal |
4761 | arguments of statement functions. */ | |
6de9cd9a | 4762 | if (sym != NULL && !st_flag |
524af0d6 JB |
4763 | && (!gfc_add_dummy(&sym->attr, sym->name, NULL) |
4764 | || !gfc_missing_attr (&sym->attr, NULL))) | |
6de9cd9a DN |
4765 | { |
4766 | m = MATCH_ERROR; | |
4767 | goto cleanup; | |
4768 | } | |
4769 | ||
4770 | /* The name of a program unit can be in a different namespace, | |
636dff67 SK |
4771 | so check for it explicitly. After the statement is accepted, |
4772 | the name is checked for especially in gfc_get_symbol(). */ | |
6de9cd9a DN |
4773 | if (gfc_new_block != NULL && sym != NULL |
4774 | && strcmp (sym->name, gfc_new_block->name) == 0) | |
4775 | { | |
c4100eae | 4776 | gfc_error ("Name %qs at %C is the name of the procedure", |
6de9cd9a DN |
4777 | sym->name); |
4778 | m = MATCH_ERROR; | |
4779 | goto cleanup; | |
4780 | } | |
4781 | ||
4782 | if (gfc_match_char (')') == MATCH_YES) | |
4783 | goto ok; | |
4784 | ||
4785 | m = gfc_match_char (','); | |
4786 | if (m != MATCH_YES) | |
4787 | { | |
4788 | gfc_error ("Unexpected junk in formal argument list at %C"); | |
4789 | goto cleanup; | |
4790 | } | |
4791 | } | |
4792 | ||
4793 | ok: | |
4794 | /* Check for duplicate symbols in the formal argument list. */ | |
4795 | if (head != NULL) | |
4796 | { | |
4797 | for (p = head; p->next; p = p->next) | |
4798 | { | |
4799 | if (p->sym == NULL) | |
4800 | continue; | |
4801 | ||
4802 | for (q = p->next; q; q = q->next) | |
4803 | if (p->sym == q->sym) | |
4804 | { | |
c4100eae | 4805 | gfc_error ("Duplicate symbol %qs in formal argument list " |
636dff67 | 4806 | "at %C", p->sym->name); |
6de9cd9a DN |
4807 | |
4808 | m = MATCH_ERROR; | |
4809 | goto cleanup; | |
4810 | } | |
4811 | } | |
4812 | } | |
4813 | ||
524af0d6 | 4814 | if (!gfc_add_explicit_interface (progname, IFSRC_DECL, head, NULL)) |
6de9cd9a DN |
4815 | { |
4816 | m = MATCH_ERROR; | |
4817 | goto cleanup; | |
4818 | } | |
4819 | ||
e9d9b48d PT |
4820 | /* gfc_error_now used in following and return with MATCH_YES because |
4821 | doing otherwise results in a cascade of extraneous errors and in | |
4822 | some cases an ICE in symbol.c(gfc_release_symbol). */ | |
0ef5fbc1 | 4823 | if (progname->attr.module_procedure && progname->attr.host_assoc) |
4668d6f9 | 4824 | { |
0ef5fbc1 PT |
4825 | bool arg_count_mismatch = false; |
4826 | ||
4827 | if (!formal && head) | |
4828 | arg_count_mismatch = true; | |
4829 | ||
4830 | /* Abbreviated module procedure declaration is not meant to have any | |
4831 | formal arguments! */ | |
e9d9b48d | 4832 | if (!progname->abr_modproc_decl && formal && !head) |
0ef5fbc1 PT |
4833 | arg_count_mismatch = true; |
4834 | ||
4668d6f9 PT |
4835 | for (p = formal, q = head; p && q; p = p->next, q = q->next) |
4836 | { | |
4837 | if ((p->next != NULL && q->next == NULL) | |
4838 | || (p->next == NULL && q->next != NULL)) | |
0ef5fbc1 | 4839 | arg_count_mismatch = true; |
4668d6f9 PT |
4840 | else if ((p->sym == NULL && q->sym == NULL) |
4841 | || strcmp (p->sym->name, q->sym->name) == 0) | |
4842 | continue; | |
4843 | else | |
4844 | gfc_error_now ("Mismatch in MODULE PROCEDURE formal " | |
4845 | "argument names (%s/%s) at %C", | |
4846 | p->sym->name, q->sym->name); | |
4847 | } | |
0ef5fbc1 PT |
4848 | |
4849 | if (arg_count_mismatch) | |
4850 | gfc_error_now ("Mismatch in number of MODULE PROCEDURE " | |
4851 | "formal arguments at %C"); | |
4668d6f9 PT |
4852 | } |
4853 | ||
6de9cd9a DN |
4854 | return MATCH_YES; |
4855 | ||
4856 | cleanup: | |
4857 | gfc_free_formal_arglist (head); | |
4858 | return m; | |
4859 | } | |
4860 | ||
4861 | ||
4862 | /* Match a RESULT specification following a function declaration or | |
4863 | ENTRY statement. Also matches the end-of-statement. */ | |
4864 | ||
4865 | static match | |
66e4ab31 | 4866 | match_result (gfc_symbol *function, gfc_symbol **result) |
6de9cd9a DN |
4867 | { |
4868 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4869 | gfc_symbol *r; | |
4870 | match m; | |
4871 | ||
4872 | if (gfc_match (" result (") != MATCH_YES) | |
4873 | return MATCH_NO; | |
4874 | ||
4875 | m = gfc_match_name (name); | |
4876 | if (m != MATCH_YES) | |
4877 | return m; | |
4878 | ||
a8b3b0b6 CR |
4879 | /* Get the right paren, and that's it because there could be the |
4880 | bind(c) attribute after the result clause. */ | |
524af0d6 | 4881 | if (gfc_match_char (')') != MATCH_YES) |
6de9cd9a | 4882 | { |
a8b3b0b6 | 4883 | /* TODO: should report the missing right paren here. */ |
6de9cd9a DN |
4884 | return MATCH_ERROR; |
4885 | } | |
4886 | ||
4887 | if (strcmp (function->name, name) == 0) | |
4888 | { | |
636dff67 | 4889 | gfc_error ("RESULT variable at %C must be different than function name"); |
6de9cd9a DN |
4890 | return MATCH_ERROR; |
4891 | } | |
4892 | ||
4893 | if (gfc_get_symbol (name, NULL, &r)) | |
4894 | return MATCH_ERROR; | |
4895 | ||
524af0d6 | 4896 | if (!gfc_add_result (&r->attr, r->name, NULL)) |
6de9cd9a DN |
4897 | return MATCH_ERROR; |
4898 | ||
4899 | *result = r; | |
4900 | ||
4901 | return MATCH_YES; | |
4902 | } | |
4903 | ||
4904 | ||
a8b3b0b6 CR |
4905 | /* Match a function suffix, which could be a combination of a result |
4906 | clause and BIND(C), either one, or neither. The draft does not | |
4907 | require them to come in a specific order. */ | |
4908 | ||
4909 | match | |
4910 | gfc_match_suffix (gfc_symbol *sym, gfc_symbol **result) | |
4911 | { | |
4912 | match is_bind_c; /* Found bind(c). */ | |
4913 | match is_result; /* Found result clause. */ | |
4914 | match found_match; /* Status of whether we've found a good match. */ | |
8fc541d3 | 4915 | char peek_char; /* Character we're going to peek at. */ |
1eabf70a | 4916 | bool allow_binding_name; |
a8b3b0b6 CR |
4917 | |
4918 | /* Initialize to having found nothing. */ | |
4919 | found_match = MATCH_NO; | |
f5acf0f2 | 4920 | is_bind_c = MATCH_NO; |
a8b3b0b6 CR |
4921 | is_result = MATCH_NO; |
4922 | ||
4923 | /* Get the next char to narrow between result and bind(c). */ | |
4924 | gfc_gobble_whitespace (); | |
8fc541d3 | 4925 | peek_char = gfc_peek_ascii_char (); |
a8b3b0b6 | 4926 | |
1eabf70a TB |
4927 | /* C binding names are not allowed for internal procedures. */ |
4928 | if (gfc_current_state () == COMP_CONTAINS | |
4929 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
4930 | allow_binding_name = false; | |
4931 | else | |
4932 | allow_binding_name = true; | |
4933 | ||
a8b3b0b6 CR |
4934 | switch (peek_char) |
4935 | { | |
4936 | case 'r': | |
4937 | /* Look for result clause. */ | |
4938 | is_result = match_result (sym, result); | |
4939 | if (is_result == MATCH_YES) | |
4940 | { | |
4941 | /* Now see if there is a bind(c) after it. */ | |
1eabf70a | 4942 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
4943 | /* We've found the result clause and possibly bind(c). */ |
4944 | found_match = MATCH_YES; | |
4945 | } | |
4946 | else | |
4947 | /* This should only be MATCH_ERROR. */ | |
f5acf0f2 | 4948 | found_match = is_result; |
a8b3b0b6 CR |
4949 | break; |
4950 | case 'b': | |
4951 | /* Look for bind(c) first. */ | |
1eabf70a | 4952 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
4953 | if (is_bind_c == MATCH_YES) |
4954 | { | |
4955 | /* Now see if a result clause followed it. */ | |
4956 | is_result = match_result (sym, result); | |
4957 | found_match = MATCH_YES; | |
4958 | } | |
4959 | else | |
4960 | { | |
4961 | /* Should only be a MATCH_ERROR if we get here after seeing 'b'. */ | |
4962 | found_match = MATCH_ERROR; | |
4963 | } | |
4964 | break; | |
4965 | default: | |
4966 | gfc_error ("Unexpected junk after function declaration at %C"); | |
4967 | found_match = MATCH_ERROR; | |
4968 | break; | |
4969 | } | |
4970 | ||
a8b3b0b6 | 4971 | if (is_bind_c == MATCH_YES) |
01f4fff1 | 4972 | { |
1eabf70a | 4973 | /* Fortran 2008 draft allows BIND(C) for internal procedures. */ |
01f4fff1 | 4974 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 4975 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
524af0d6 JB |
4976 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
4977 | "at %L may not be specified for an internal " | |
4978 | "procedure", &gfc_current_locus)) | |
1eabf70a TB |
4979 | return MATCH_ERROR; |
4980 | ||
524af0d6 | 4981 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, &gfc_current_locus, 1)) |
01f4fff1 TB |
4982 | return MATCH_ERROR; |
4983 | } | |
f5acf0f2 | 4984 | |
a8b3b0b6 CR |
4985 | return found_match; |
4986 | } | |
4987 | ||
4988 | ||
3070bab4 JW |
4989 | /* Procedure pointer return value without RESULT statement: |
4990 | Add "hidden" result variable named "ppr@". */ | |
4991 | ||
524af0d6 | 4992 | static bool |
3070bab4 JW |
4993 | add_hidden_procptr_result (gfc_symbol *sym) |
4994 | { | |
4995 | bool case1,case2; | |
4996 | ||
4997 | if (gfc_notification_std (GFC_STD_F2003) == ERROR) | |
524af0d6 | 4998 | return false; |
3070bab4 JW |
4999 | |
5000 | /* First usage case: PROCEDURE and EXTERNAL statements. */ | |
5001 | case1 = gfc_current_state () == COMP_FUNCTION && gfc_current_block () | |
5002 | && strcmp (gfc_current_block ()->name, sym->name) == 0 | |
5003 | && sym->attr.external; | |
5004 | /* Second usage case: INTERFACE statements. */ | |
5005 | case2 = gfc_current_state () == COMP_INTERFACE && gfc_state_stack->previous | |
5006 | && gfc_state_stack->previous->state == COMP_FUNCTION | |
5007 | && strcmp (gfc_state_stack->previous->sym->name, sym->name) == 0; | |
5008 | ||
5009 | if (case1 || case2) | |
5010 | { | |
5011 | gfc_symtree *stree; | |
5012 | if (case1) | |
08a6b8e0 | 5013 | gfc_get_sym_tree ("ppr@", gfc_current_ns, &stree, false); |
3070bab4 | 5014 | else if (case2) |
c73b6478 JW |
5015 | { |
5016 | gfc_symtree *st2; | |
08a6b8e0 | 5017 | gfc_get_sym_tree ("ppr@", gfc_current_ns->parent, &stree, false); |
c73b6478 JW |
5018 | st2 = gfc_new_symtree (&gfc_current_ns->sym_root, "ppr@"); |
5019 | st2->n.sym = stree->n.sym; | |
5020 | } | |
3070bab4 JW |
5021 | sym->result = stree->n.sym; |
5022 | ||
5023 | sym->result->attr.proc_pointer = sym->attr.proc_pointer; | |
5024 | sym->result->attr.pointer = sym->attr.pointer; | |
5025 | sym->result->attr.external = sym->attr.external; | |
5026 | sym->result->attr.referenced = sym->attr.referenced; | |
fc9c6e5d | 5027 | sym->result->ts = sym->ts; |
3070bab4 JW |
5028 | sym->attr.proc_pointer = 0; |
5029 | sym->attr.pointer = 0; | |
5030 | sym->attr.external = 0; | |
5031 | if (sym->result->attr.external && sym->result->attr.pointer) | |
5032 | { | |
5033 | sym->result->attr.pointer = 0; | |
5034 | sym->result->attr.proc_pointer = 1; | |
5035 | } | |
5036 | ||
5037 | return gfc_add_result (&sym->result->attr, sym->result->name, NULL); | |
5038 | } | |
5039 | /* POINTER after PROCEDURE/EXTERNAL/INTERFACE statement. */ | |
5040 | else if (sym->attr.function && !sym->attr.external && sym->attr.pointer | |
5041 | && sym->result && sym->result != sym && sym->result->attr.external | |
5042 | && sym == gfc_current_ns->proc_name | |
5043 | && sym == sym->result->ns->proc_name | |
5044 | && strcmp ("ppr@", sym->result->name) == 0) | |
5045 | { | |
5046 | sym->result->attr.proc_pointer = 1; | |
5047 | sym->attr.pointer = 0; | |
524af0d6 | 5048 | return true; |
3070bab4 JW |
5049 | } |
5050 | else | |
524af0d6 | 5051 | return false; |
3070bab4 JW |
5052 | } |
5053 | ||
5054 | ||
713485cc JW |
5055 | /* Match the interface for a PROCEDURE declaration, |
5056 | including brackets (R1212). */ | |
69773742 JW |
5057 | |
5058 | static match | |
713485cc | 5059 | match_procedure_interface (gfc_symbol **proc_if) |
69773742 JW |
5060 | { |
5061 | match m; | |
3276e0b3 | 5062 | gfc_symtree *st; |
69773742 | 5063 | locus old_loc, entry_loc; |
3276e0b3 PT |
5064 | gfc_namespace *old_ns = gfc_current_ns; |
5065 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
69773742 | 5066 | |
3276e0b3 | 5067 | old_loc = entry_loc = gfc_current_locus; |
69773742 JW |
5068 | gfc_clear_ts (¤t_ts); |
5069 | ||
5070 | if (gfc_match (" (") != MATCH_YES) | |
5071 | { | |
5072 | gfc_current_locus = entry_loc; | |
5073 | return MATCH_NO; | |
5074 | } | |
5075 | ||
5076 | /* Get the type spec. for the procedure interface. */ | |
5077 | old_loc = gfc_current_locus; | |
e74f1cc8 | 5078 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
f4256439 | 5079 | gfc_gobble_whitespace (); |
8fc541d3 | 5080 | if (m == MATCH_YES || (m == MATCH_NO && gfc_peek_ascii_char () == ')')) |
69773742 JW |
5081 | goto got_ts; |
5082 | ||
5083 | if (m == MATCH_ERROR) | |
5084 | return m; | |
5085 | ||
3276e0b3 | 5086 | /* Procedure interface is itself a procedure. */ |
69773742 | 5087 | gfc_current_locus = old_loc; |
3276e0b3 | 5088 | m = gfc_match_name (name); |
69773742 | 5089 | |
3276e0b3 PT |
5090 | /* First look to see if it is already accessible in the current |
5091 | namespace because it is use associated or contained. */ | |
5092 | st = NULL; | |
5093 | if (gfc_find_sym_tree (name, NULL, 0, &st)) | |
5094 | return MATCH_ERROR; | |
5095 | ||
5096 | /* If it is still not found, then try the parent namespace, if it | |
5097 | exists and create the symbol there if it is still not found. */ | |
5098 | if (gfc_current_ns->parent) | |
5099 | gfc_current_ns = gfc_current_ns->parent; | |
5100 | if (st == NULL && gfc_get_ha_sym_tree (name, &st)) | |
5101 | return MATCH_ERROR; | |
5102 | ||
5103 | gfc_current_ns = old_ns; | |
5104 | *proc_if = st->n.sym; | |
69773742 | 5105 | |
713485cc | 5106 | if (*proc_if) |
69773742 | 5107 | { |
713485cc | 5108 | (*proc_if)->refs++; |
bb343a6c TB |
5109 | /* Resolve interface if possible. That way, attr.procedure is only set |
5110 | if it is declared by a later procedure-declaration-stmt, which is | |
0e8d854e | 5111 | invalid per F08:C1216 (cf. resolve_procedure_interface). */ |
713485cc JW |
5112 | while ((*proc_if)->ts.interface) |
5113 | *proc_if = (*proc_if)->ts.interface; | |
bb343a6c | 5114 | |
0e8d854e JW |
5115 | if ((*proc_if)->attr.flavor == FL_UNKNOWN |
5116 | && (*proc_if)->ts.type == BT_UNKNOWN | |
524af0d6 JB |
5117 | && !gfc_add_flavor (&(*proc_if)->attr, FL_PROCEDURE, |
5118 | (*proc_if)->name, NULL)) | |
0e8d854e | 5119 | return MATCH_ERROR; |
69773742 JW |
5120 | } |
5121 | ||
5122 | got_ts: | |
69773742 JW |
5123 | if (gfc_match (" )") != MATCH_YES) |
5124 | { | |
5125 | gfc_current_locus = entry_loc; | |
5126 | return MATCH_NO; | |
5127 | } | |
5128 | ||
713485cc JW |
5129 | return MATCH_YES; |
5130 | } | |
5131 | ||
5132 | ||
5133 | /* Match a PROCEDURE declaration (R1211). */ | |
5134 | ||
5135 | static match | |
5136 | match_procedure_decl (void) | |
5137 | { | |
5138 | match m; | |
5139 | gfc_symbol *sym, *proc_if = NULL; | |
5140 | int num; | |
5141 | gfc_expr *initializer = NULL; | |
5142 | ||
1cc0e193 | 5143 | /* Parse interface (with brackets). */ |
713485cc JW |
5144 | m = match_procedure_interface (&proc_if); |
5145 | if (m != MATCH_YES) | |
5146 | return m; | |
5147 | ||
5148 | /* Parse attributes (with colons). */ | |
69773742 JW |
5149 | m = match_attr_spec(); |
5150 | if (m == MATCH_ERROR) | |
5151 | return MATCH_ERROR; | |
5152 | ||
0859be17 TB |
5153 | if (proc_if && proc_if->attr.is_bind_c && !current_attr.is_bind_c) |
5154 | { | |
5155 | current_attr.is_bind_c = 1; | |
5156 | has_name_equals = 0; | |
5157 | curr_binding_label = NULL; | |
5158 | } | |
5159 | ||
69773742 JW |
5160 | /* Get procedure symbols. */ |
5161 | for(num=1;;num++) | |
5162 | { | |
69773742 JW |
5163 | m = gfc_match_symbol (&sym, 0); |
5164 | if (m == MATCH_NO) | |
5165 | goto syntax; | |
5166 | else if (m == MATCH_ERROR) | |
5167 | return m; | |
5168 | ||
5169 | /* Add current_attr to the symbol attributes. */ | |
524af0d6 | 5170 | if (!gfc_copy_attr (&sym->attr, ¤t_attr, NULL)) |
69773742 JW |
5171 | return MATCH_ERROR; |
5172 | ||
5173 | if (sym->attr.is_bind_c) | |
5174 | { | |
5175 | /* Check for C1218. */ | |
5176 | if (!proc_if || !proc_if->attr.is_bind_c) | |
5177 | { | |
5178 | gfc_error ("BIND(C) attribute at %C requires " | |
5179 | "an interface with BIND(C)"); | |
5180 | return MATCH_ERROR; | |
5181 | } | |
5182 | /* Check for C1217. */ | |
5183 | if (has_name_equals && sym->attr.pointer) | |
5184 | { | |
5185 | gfc_error ("BIND(C) procedure with NAME may not have " | |
5186 | "POINTER attribute at %C"); | |
5187 | return MATCH_ERROR; | |
5188 | } | |
5189 | if (has_name_equals && sym->attr.dummy) | |
5190 | { | |
5191 | gfc_error ("Dummy procedure at %C may not have " | |
5192 | "BIND(C) attribute with NAME"); | |
5193 | return MATCH_ERROR; | |
5194 | } | |
5195 | /* Set binding label for BIND(C). */ | |
524af0d6 | 5196 | if (!set_binding_label (&sym->binding_label, sym->name, num)) |
69773742 JW |
5197 | return MATCH_ERROR; |
5198 | } | |
5199 | ||
524af0d6 | 5200 | if (!gfc_add_external (&sym->attr, NULL)) |
69773742 | 5201 | return MATCH_ERROR; |
3070bab4 | 5202 | |
524af0d6 | 5203 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
5204 | sym = sym->result; |
5205 | ||
524af0d6 | 5206 | if (!gfc_add_proc (&sym->attr, sym->name, NULL)) |
69773742 JW |
5207 | return MATCH_ERROR; |
5208 | ||
5209 | /* Set interface. */ | |
5210 | if (proc_if != NULL) | |
6cc309c9 | 5211 | { |
1d146030 JW |
5212 | if (sym->ts.type != BT_UNKNOWN) |
5213 | { | |
c4100eae | 5214 | gfc_error ("Procedure %qs at %L already has basic type of %s", |
1d146030 JW |
5215 | sym->name, &gfc_current_locus, |
5216 | gfc_basic_typename (sym->ts.type)); | |
5217 | return MATCH_ERROR; | |
5218 | } | |
32d99e68 | 5219 | sym->ts.interface = proc_if; |
6cc309c9 | 5220 | sym->attr.untyped = 1; |
c73b6478 | 5221 | sym->attr.if_source = IFSRC_IFBODY; |
6cc309c9 | 5222 | } |
69773742 JW |
5223 | else if (current_ts.type != BT_UNKNOWN) |
5224 | { | |
524af0d6 | 5225 | if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
1d146030 | 5226 | return MATCH_ERROR; |
32d99e68 JW |
5227 | sym->ts.interface = gfc_new_symbol ("", gfc_current_ns); |
5228 | sym->ts.interface->ts = current_ts; | |
d91909c0 | 5229 | sym->ts.interface->attr.flavor = FL_PROCEDURE; |
32d99e68 | 5230 | sym->ts.interface->attr.function = 1; |
d91909c0 | 5231 | sym->attr.function = 1; |
c73b6478 | 5232 | sym->attr.if_source = IFSRC_UNKNOWN; |
69773742 JW |
5233 | } |
5234 | ||
8fb74da4 JW |
5235 | if (gfc_match (" =>") == MATCH_YES) |
5236 | { | |
5237 | if (!current_attr.pointer) | |
5238 | { | |
5239 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
5240 | m = MATCH_ERROR; | |
5241 | goto cleanup; | |
5242 | } | |
5243 | ||
80f95228 | 5244 | m = match_pointer_init (&initializer, 1); |
8fb74da4 JW |
5245 | if (m != MATCH_YES) |
5246 | goto cleanup; | |
5247 | ||
524af0d6 | 5248 | if (!add_init_expr_to_sym (sym->name, &initializer, &gfc_current_locus)) |
8fb74da4 JW |
5249 | goto cleanup; |
5250 | ||
5251 | } | |
5252 | ||
69773742 JW |
5253 | if (gfc_match_eos () == MATCH_YES) |
5254 | return MATCH_YES; | |
5255 | if (gfc_match_char (',') != MATCH_YES) | |
5256 | goto syntax; | |
5257 | } | |
5258 | ||
5259 | syntax: | |
5260 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
5261 | return MATCH_ERROR; | |
8fb74da4 JW |
5262 | |
5263 | cleanup: | |
5264 | /* Free stuff up and return. */ | |
5265 | gfc_free_expr (initializer); | |
5266 | return m; | |
69773742 JW |
5267 | } |
5268 | ||
5269 | ||
713485cc JW |
5270 | static match |
5271 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc); | |
5272 | ||
5273 | ||
5274 | /* Match a procedure pointer component declaration (R445). */ | |
5275 | ||
5276 | static match | |
5277 | match_ppc_decl (void) | |
5278 | { | |
5279 | match m; | |
5280 | gfc_symbol *proc_if = NULL; | |
5281 | gfc_typespec ts; | |
5282 | int num; | |
5283 | gfc_component *c; | |
5284 | gfc_expr *initializer = NULL; | |
5285 | gfc_typebound_proc* tb; | |
5286 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5287 | ||
5288 | /* Parse interface (with brackets). */ | |
5289 | m = match_procedure_interface (&proc_if); | |
5290 | if (m != MATCH_YES) | |
5291 | goto syntax; | |
5292 | ||
5293 | /* Parse attributes. */ | |
5294 | tb = XCNEW (gfc_typebound_proc); | |
5295 | tb->where = gfc_current_locus; | |
5296 | m = match_binding_attributes (tb, false, true); | |
5297 | if (m == MATCH_ERROR) | |
5298 | return m; | |
5299 | ||
713485cc JW |
5300 | gfc_clear_attr (¤t_attr); |
5301 | current_attr.procedure = 1; | |
5302 | current_attr.proc_pointer = 1; | |
5303 | current_attr.access = tb->access; | |
5304 | current_attr.flavor = FL_PROCEDURE; | |
5305 | ||
5306 | /* Match the colons (required). */ | |
5307 | if (gfc_match (" ::") != MATCH_YES) | |
5308 | { | |
a4d9b221 | 5309 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
713485cc JW |
5310 | return MATCH_ERROR; |
5311 | } | |
5312 | ||
5313 | /* Check for C450. */ | |
5314 | if (!tb->nopass && proc_if == NULL) | |
5315 | { | |
5316 | gfc_error("NOPASS or explicit interface required at %C"); | |
5317 | return MATCH_ERROR; | |
5318 | } | |
5319 | ||
524af0d6 | 5320 | if (!gfc_notify_std (GFC_STD_F2003, "Procedure pointer component at %C")) |
3212c187 SK |
5321 | return MATCH_ERROR; |
5322 | ||
713485cc JW |
5323 | /* Match PPC names. */ |
5324 | ts = current_ts; | |
5325 | for(num=1;;num++) | |
5326 | { | |
5327 | m = gfc_match_name (name); | |
5328 | if (m == MATCH_NO) | |
5329 | goto syntax; | |
5330 | else if (m == MATCH_ERROR) | |
5331 | return m; | |
5332 | ||
524af0d6 | 5333 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
713485cc JW |
5334 | return MATCH_ERROR; |
5335 | ||
5336 | /* Add current_attr to the symbol attributes. */ | |
524af0d6 | 5337 | if (!gfc_copy_attr (&c->attr, ¤t_attr, NULL)) |
713485cc JW |
5338 | return MATCH_ERROR; |
5339 | ||
524af0d6 | 5340 | if (!gfc_add_external (&c->attr, NULL)) |
713485cc JW |
5341 | return MATCH_ERROR; |
5342 | ||
524af0d6 | 5343 | if (!gfc_add_proc (&c->attr, name, NULL)) |
713485cc JW |
5344 | return MATCH_ERROR; |
5345 | ||
2be03814 TB |
5346 | if (num == 1) |
5347 | c->tb = tb; | |
5348 | else | |
5349 | { | |
5350 | c->tb = XCNEW (gfc_typebound_proc); | |
5351 | c->tb->where = gfc_current_locus; | |
5352 | *c->tb = *tb; | |
5353 | } | |
90661f26 | 5354 | |
713485cc JW |
5355 | /* Set interface. */ |
5356 | if (proc_if != NULL) | |
5357 | { | |
5358 | c->ts.interface = proc_if; | |
5359 | c->attr.untyped = 1; | |
5360 | c->attr.if_source = IFSRC_IFBODY; | |
5361 | } | |
5362 | else if (ts.type != BT_UNKNOWN) | |
5363 | { | |
5364 | c->ts = ts; | |
5365 | c->ts.interface = gfc_new_symbol ("", gfc_current_ns); | |
d7fee03d | 5366 | c->ts.interface->result = c->ts.interface; |
713485cc | 5367 | c->ts.interface->ts = ts; |
d91909c0 | 5368 | c->ts.interface->attr.flavor = FL_PROCEDURE; |
713485cc | 5369 | c->ts.interface->attr.function = 1; |
d91909c0 | 5370 | c->attr.function = 1; |
713485cc JW |
5371 | c->attr.if_source = IFSRC_UNKNOWN; |
5372 | } | |
5373 | ||
5374 | if (gfc_match (" =>") == MATCH_YES) | |
5375 | { | |
80f95228 | 5376 | m = match_pointer_init (&initializer, 1); |
713485cc JW |
5377 | if (m != MATCH_YES) |
5378 | { | |
5379 | gfc_free_expr (initializer); | |
5380 | return m; | |
5381 | } | |
5382 | c->initializer = initializer; | |
5383 | } | |
5384 | ||
5385 | if (gfc_match_eos () == MATCH_YES) | |
5386 | return MATCH_YES; | |
5387 | if (gfc_match_char (',') != MATCH_YES) | |
5388 | goto syntax; | |
5389 | } | |
5390 | ||
5391 | syntax: | |
5392 | gfc_error ("Syntax error in procedure pointer component at %C"); | |
5393 | return MATCH_ERROR; | |
5394 | } | |
5395 | ||
5396 | ||
69773742 JW |
5397 | /* Match a PROCEDURE declaration inside an interface (R1206). */ |
5398 | ||
5399 | static match | |
5400 | match_procedure_in_interface (void) | |
5401 | { | |
5402 | match m; | |
5403 | gfc_symbol *sym; | |
5404 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
a6fcd41a | 5405 | locus old_locus; |
69773742 JW |
5406 | |
5407 | if (current_interface.type == INTERFACE_NAMELESS | |
5408 | || current_interface.type == INTERFACE_ABSTRACT) | |
5409 | { | |
5410 | gfc_error ("PROCEDURE at %C must be in a generic interface"); | |
5411 | return MATCH_ERROR; | |
5412 | } | |
5413 | ||
a6fcd41a TB |
5414 | /* Check if the F2008 optional double colon appears. */ |
5415 | gfc_gobble_whitespace (); | |
5416 | old_locus = gfc_current_locus; | |
5417 | if (gfc_match ("::") == MATCH_YES) | |
5418 | { | |
524af0d6 JB |
5419 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
5420 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
a6fcd41a TB |
5421 | return MATCH_ERROR; |
5422 | } | |
5423 | else | |
5424 | gfc_current_locus = old_locus; | |
5425 | ||
69773742 JW |
5426 | for(;;) |
5427 | { | |
5428 | m = gfc_match_name (name); | |
5429 | if (m == MATCH_NO) | |
5430 | goto syntax; | |
5431 | else if (m == MATCH_ERROR) | |
5432 | return m; | |
5433 | if (gfc_get_symbol (name, gfc_current_ns->parent, &sym)) | |
5434 | return MATCH_ERROR; | |
5435 | ||
524af0d6 | 5436 | if (!gfc_add_interface (sym)) |
69773742 JW |
5437 | return MATCH_ERROR; |
5438 | ||
69773742 JW |
5439 | if (gfc_match_eos () == MATCH_YES) |
5440 | break; | |
5441 | if (gfc_match_char (',') != MATCH_YES) | |
5442 | goto syntax; | |
5443 | } | |
5444 | ||
5445 | return MATCH_YES; | |
5446 | ||
5447 | syntax: | |
5448 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
5449 | return MATCH_ERROR; | |
5450 | } | |
5451 | ||
5452 | ||
5453 | /* General matcher for PROCEDURE declarations. */ | |
5454 | ||
30b608eb DK |
5455 | static match match_procedure_in_type (void); |
5456 | ||
69773742 JW |
5457 | match |
5458 | gfc_match_procedure (void) | |
5459 | { | |
5460 | match m; | |
5461 | ||
5462 | switch (gfc_current_state ()) | |
5463 | { | |
5464 | case COMP_NONE: | |
5465 | case COMP_PROGRAM: | |
5466 | case COMP_MODULE: | |
4668d6f9 | 5467 | case COMP_SUBMODULE: |
69773742 JW |
5468 | case COMP_SUBROUTINE: |
5469 | case COMP_FUNCTION: | |
3547d57e | 5470 | case COMP_BLOCK: |
69773742 JW |
5471 | m = match_procedure_decl (); |
5472 | break; | |
5473 | case COMP_INTERFACE: | |
5474 | m = match_procedure_in_interface (); | |
5475 | break; | |
5476 | case COMP_DERIVED: | |
713485cc JW |
5477 | m = match_ppc_decl (); |
5478 | break; | |
30b608eb DK |
5479 | case COMP_DERIVED_CONTAINS: |
5480 | m = match_procedure_in_type (); | |
5481 | break; | |
69773742 JW |
5482 | default: |
5483 | return MATCH_NO; | |
5484 | } | |
5485 | ||
5486 | if (m != MATCH_YES) | |
5487 | return m; | |
5488 | ||
524af0d6 | 5489 | if (!gfc_notify_std (GFC_STD_F2003, "PROCEDURE statement at %C")) |
69773742 JW |
5490 | return MATCH_ERROR; |
5491 | ||
5492 | return m; | |
5493 | } | |
5494 | ||
5495 | ||
c3005b0f DK |
5496 | /* Warn if a matched procedure has the same name as an intrinsic; this is |
5497 | simply a wrapper around gfc_warn_intrinsic_shadow that interprets the current | |
5498 | parser-state-stack to find out whether we're in a module. */ | |
5499 | ||
5500 | static void | |
73e42eef | 5501 | do_warn_intrinsic_shadow (const gfc_symbol* sym, bool func) |
c3005b0f DK |
5502 | { |
5503 | bool in_module; | |
5504 | ||
5505 | in_module = (gfc_state_stack->previous | |
4668d6f9 PT |
5506 | && (gfc_state_stack->previous->state == COMP_MODULE |
5507 | || gfc_state_stack->previous->state == COMP_SUBMODULE)); | |
c3005b0f DK |
5508 | |
5509 | gfc_warn_intrinsic_shadow (sym, in_module, func); | |
5510 | } | |
5511 | ||
5512 | ||
6de9cd9a DN |
5513 | /* Match a function declaration. */ |
5514 | ||
5515 | match | |
5516 | gfc_match_function_decl (void) | |
5517 | { | |
5518 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5519 | gfc_symbol *sym, *result; | |
5520 | locus old_loc; | |
5521 | match m; | |
a8b3b0b6 | 5522 | match suffix_match; |
f5acf0f2 | 5523 | match found_match; /* Status returned by match func. */ |
6de9cd9a DN |
5524 | |
5525 | if (gfc_current_state () != COMP_NONE | |
5526 | && gfc_current_state () != COMP_INTERFACE | |
5527 | && gfc_current_state () != COMP_CONTAINS) | |
5528 | return MATCH_NO; | |
5529 | ||
5530 | gfc_clear_ts (¤t_ts); | |
5531 | ||
63645982 | 5532 | old_loc = gfc_current_locus; |
6de9cd9a | 5533 | |
1c8bcdf7 | 5534 | m = gfc_match_prefix (¤t_ts); |
6de9cd9a DN |
5535 | if (m != MATCH_YES) |
5536 | { | |
63645982 | 5537 | gfc_current_locus = old_loc; |
6de9cd9a DN |
5538 | return m; |
5539 | } | |
5540 | ||
5541 | if (gfc_match ("function% %n", name) != MATCH_YES) | |
5542 | { | |
63645982 | 5543 | gfc_current_locus = old_loc; |
6de9cd9a DN |
5544 | return MATCH_NO; |
5545 | } | |
4668d6f9 | 5546 | |
1a492601 | 5547 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 5548 | return MATCH_ERROR; |
3070bab4 | 5549 | |
524af0d6 | 5550 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
5551 | sym = sym->result; |
5552 | ||
4668d6f9 PT |
5553 | if (current_attr.module_procedure) |
5554 | sym->attr.module_procedure = 1; | |
5555 | ||
6de9cd9a DN |
5556 | gfc_new_block = sym; |
5557 | ||
5558 | m = gfc_match_formal_arglist (sym, 0, 0); | |
5559 | if (m == MATCH_NO) | |
2b9a33ae TS |
5560 | { |
5561 | gfc_error ("Expected formal argument list in function " | |
636dff67 | 5562 | "definition at %C"); |
2b9a33ae TS |
5563 | m = MATCH_ERROR; |
5564 | goto cleanup; | |
5565 | } | |
6de9cd9a DN |
5566 | else if (m == MATCH_ERROR) |
5567 | goto cleanup; | |
5568 | ||
5569 | result = NULL; | |
5570 | ||
a8b3b0b6 CR |
5571 | /* According to the draft, the bind(c) and result clause can |
5572 | come in either order after the formal_arg_list (i.e., either | |
5573 | can be first, both can exist together or by themselves or neither | |
5574 | one). Therefore, the match_result can't match the end of the | |
5575 | string, and check for the bind(c) or result clause in either order. */ | |
5576 | found_match = gfc_match_eos (); | |
5577 | ||
5578 | /* Make sure that it isn't already declared as BIND(C). If it is, it | |
5579 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5580 | not allowed for procedures. */ | |
5581 | if (sym->attr.is_bind_c == 1) | |
5582 | { | |
5583 | sym->attr.is_bind_c = 0; | |
5584 | if (sym->old_symbol != NULL) | |
5585 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5586 | "variables or common blocks", | |
5587 | &(sym->old_symbol->declared_at)); | |
5588 | else | |
5589 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5590 | "variables or common blocks", &gfc_current_locus); | |
6de9cd9a DN |
5591 | } |
5592 | ||
a8b3b0b6 | 5593 | if (found_match != MATCH_YES) |
6de9cd9a | 5594 | { |
a8b3b0b6 CR |
5595 | /* If we haven't found the end-of-statement, look for a suffix. */ |
5596 | suffix_match = gfc_match_suffix (sym, &result); | |
5597 | if (suffix_match == MATCH_YES) | |
5598 | /* Need to get the eos now. */ | |
5599 | found_match = gfc_match_eos (); | |
5600 | else | |
5601 | found_match = suffix_match; | |
6de9cd9a DN |
5602 | } |
5603 | ||
a8b3b0b6 CR |
5604 | if(found_match != MATCH_YES) |
5605 | m = MATCH_ERROR; | |
6de9cd9a DN |
5606 | else |
5607 | { | |
a8b3b0b6 CR |
5608 | /* Make changes to the symbol. */ |
5609 | m = MATCH_ERROR; | |
f5acf0f2 | 5610 | |
524af0d6 | 5611 | if (!gfc_add_function (&sym->attr, sym->name, NULL)) |
a8b3b0b6 | 5612 | goto cleanup; |
f5acf0f2 | 5613 | |
524af0d6 JB |
5614 | if (!gfc_missing_attr (&sym->attr, NULL) |
5615 | || !copy_prefix (&sym->attr, &sym->declared_at)) | |
a8b3b0b6 | 5616 | goto cleanup; |
6de9cd9a | 5617 | |
a99d95a2 | 5618 | /* Delay matching the function characteristics until after the |
1c8bcdf7 | 5619 | specification block by signalling kind=-1. */ |
a99d95a2 PT |
5620 | sym->declared_at = old_loc; |
5621 | if (current_ts.type != BT_UNKNOWN) | |
5622 | current_ts.kind = -1; | |
5623 | else | |
5624 | current_ts.kind = 0; | |
1c8bcdf7 | 5625 | |
a8b3b0b6 CR |
5626 | if (result == NULL) |
5627 | { | |
6de7294f | 5628 | if (current_ts.type != BT_UNKNOWN |
524af0d6 | 5629 | && !gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
6de7294f | 5630 | goto cleanup; |
a8b3b0b6 CR |
5631 | sym->result = sym; |
5632 | } | |
5633 | else | |
5634 | { | |
6de7294f | 5635 | if (current_ts.type != BT_UNKNOWN |
524af0d6 | 5636 | && !gfc_add_type (result, ¤t_ts, &gfc_current_locus)) |
6de7294f | 5637 | goto cleanup; |
a8b3b0b6 CR |
5638 | sym->result = result; |
5639 | } | |
5640 | ||
c3005b0f | 5641 | /* Warn if this procedure has the same name as an intrinsic. */ |
73e42eef | 5642 | do_warn_intrinsic_shadow (sym, true); |
c3005b0f | 5643 | |
a8b3b0b6 CR |
5644 | return MATCH_YES; |
5645 | } | |
6de9cd9a DN |
5646 | |
5647 | cleanup: | |
63645982 | 5648 | gfc_current_locus = old_loc; |
6de9cd9a DN |
5649 | return m; |
5650 | } | |
5651 | ||
636dff67 SK |
5652 | |
5653 | /* This is mostly a copy of parse.c(add_global_procedure) but modified to | |
5654 | pass the name of the entry, rather than the gfc_current_block name, and | |
5655 | to return false upon finding an existing global entry. */ | |
68ea355b PT |
5656 | |
5657 | static bool | |
3a43b5b3 TB |
5658 | add_global_entry (const char *name, const char *binding_label, bool sub, |
5659 | locus *where) | |
68ea355b PT |
5660 | { |
5661 | gfc_gsymbol *s; | |
32e8bb8e | 5662 | enum gfc_symbol_type type; |
68ea355b | 5663 | |
7389bce6 | 5664 | type = sub ? GSYM_SUBROUTINE : GSYM_FUNCTION; |
68ea355b | 5665 | |
f11de7c5 TB |
5666 | /* Only in Fortran 2003: For procedures with a binding label also the Fortran |
5667 | name is a global identifier. */ | |
5668 | if (!binding_label || gfc_notification_std (GFC_STD_F2008)) | |
68ea355b | 5669 | { |
f11de7c5 TB |
5670 | s = gfc_get_gsymbol (name); |
5671 | ||
5672 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
5673 | { | |
3a43b5b3 | 5674 | gfc_global_used (s, where); |
f11de7c5 TB |
5675 | return false; |
5676 | } | |
5677 | else | |
5678 | { | |
5679 | s->type = type; | |
77f8682b | 5680 | s->sym_name = name; |
3a43b5b3 | 5681 | s->where = *where; |
f11de7c5 TB |
5682 | s->defined = 1; |
5683 | s->ns = gfc_current_ns; | |
5684 | } | |
68ea355b | 5685 | } |
f11de7c5 TB |
5686 | |
5687 | /* Don't add the symbol multiple times. */ | |
5688 | if (binding_label | |
5689 | && (!gfc_notification_std (GFC_STD_F2008) | |
5690 | || strcmp (name, binding_label) != 0)) | |
5691 | { | |
5692 | s = gfc_get_gsymbol (binding_label); | |
5693 | ||
5694 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
5695 | { | |
3a43b5b3 | 5696 | gfc_global_used (s, where); |
f11de7c5 TB |
5697 | return false; |
5698 | } | |
5699 | else | |
5700 | { | |
5701 | s->type = type; | |
77f8682b | 5702 | s->sym_name = name; |
f11de7c5 | 5703 | s->binding_label = binding_label; |
3a43b5b3 | 5704 | s->where = *where; |
f11de7c5 TB |
5705 | s->defined = 1; |
5706 | s->ns = gfc_current_ns; | |
5707 | } | |
5708 | } | |
5709 | ||
5710 | return true; | |
68ea355b | 5711 | } |
6de9cd9a | 5712 | |
636dff67 | 5713 | |
6de9cd9a DN |
5714 | /* Match an ENTRY statement. */ |
5715 | ||
5716 | match | |
5717 | gfc_match_entry (void) | |
5718 | { | |
3d79abbd PB |
5719 | gfc_symbol *proc; |
5720 | gfc_symbol *result; | |
5721 | gfc_symbol *entry; | |
6de9cd9a DN |
5722 | char name[GFC_MAX_SYMBOL_LEN + 1]; |
5723 | gfc_compile_state state; | |
5724 | match m; | |
3d79abbd | 5725 | gfc_entry_list *el; |
c96cfa49 | 5726 | locus old_loc; |
1a492601 | 5727 | bool module_procedure; |
bc3e7a8c TB |
5728 | char peek_char; |
5729 | match is_bind_c; | |
6de9cd9a DN |
5730 | |
5731 | m = gfc_match_name (name); | |
5732 | if (m != MATCH_YES) | |
5733 | return m; | |
5734 | ||
524af0d6 | 5735 | if (!gfc_notify_std (GFC_STD_F2008_OBS, "ENTRY statement at %C")) |
58fc89f6 TB |
5736 | return MATCH_ERROR; |
5737 | ||
3d79abbd | 5738 | state = gfc_current_state (); |
4c93c95a | 5739 | if (state != COMP_SUBROUTINE && state != COMP_FUNCTION) |
3d79abbd | 5740 | { |
4c93c95a FXC |
5741 | switch (state) |
5742 | { | |
5743 | case COMP_PROGRAM: | |
5744 | gfc_error ("ENTRY statement at %C cannot appear within a PROGRAM"); | |
5745 | break; | |
5746 | case COMP_MODULE: | |
5747 | gfc_error ("ENTRY statement at %C cannot appear within a MODULE"); | |
5748 | break; | |
4668d6f9 PT |
5749 | case COMP_SUBMODULE: |
5750 | gfc_error ("ENTRY statement at %C cannot appear within a SUBMODULE"); | |
5751 | break; | |
4c93c95a | 5752 | case COMP_BLOCK_DATA: |
636dff67 SK |
5753 | gfc_error ("ENTRY statement at %C cannot appear within " |
5754 | "a BLOCK DATA"); | |
4c93c95a FXC |
5755 | break; |
5756 | case COMP_INTERFACE: | |
636dff67 SK |
5757 | gfc_error ("ENTRY statement at %C cannot appear within " |
5758 | "an INTERFACE"); | |
4c93c95a FXC |
5759 | break; |
5760 | case COMP_DERIVED: | |
636dff67 SK |
5761 | gfc_error ("ENTRY statement at %C cannot appear within " |
5762 | "a DERIVED TYPE block"); | |
4c93c95a FXC |
5763 | break; |
5764 | case COMP_IF: | |
636dff67 SK |
5765 | gfc_error ("ENTRY statement at %C cannot appear within " |
5766 | "an IF-THEN block"); | |
4c93c95a FXC |
5767 | break; |
5768 | case COMP_DO: | |
8c6a85e3 | 5769 | case COMP_DO_CONCURRENT: |
636dff67 SK |
5770 | gfc_error ("ENTRY statement at %C cannot appear within " |
5771 | "a DO block"); | |
4c93c95a FXC |
5772 | break; |
5773 | case COMP_SELECT: | |
636dff67 SK |
5774 | gfc_error ("ENTRY statement at %C cannot appear within " |
5775 | "a SELECT block"); | |
4c93c95a FXC |
5776 | break; |
5777 | case COMP_FORALL: | |
636dff67 SK |
5778 | gfc_error ("ENTRY statement at %C cannot appear within " |
5779 | "a FORALL block"); | |
4c93c95a FXC |
5780 | break; |
5781 | case COMP_WHERE: | |
636dff67 SK |
5782 | gfc_error ("ENTRY statement at %C cannot appear within " |
5783 | "a WHERE block"); | |
4c93c95a FXC |
5784 | break; |
5785 | case COMP_CONTAINS: | |
636dff67 SK |
5786 | gfc_error ("ENTRY statement at %C cannot appear within " |
5787 | "a contained subprogram"); | |
4c93c95a FXC |
5788 | break; |
5789 | default: | |
fce523bf | 5790 | gfc_error ("Unexpected ENTRY statement at %C"); |
4c93c95a | 5791 | } |
3d79abbd PB |
5792 | return MATCH_ERROR; |
5793 | } | |
5794 | ||
5f0ba745 SK |
5795 | if ((state == COMP_SUBROUTINE || state == COMP_FUNCTION) |
5796 | && gfc_state_stack->previous->state == COMP_INTERFACE) | |
5797 | { | |
5798 | gfc_error ("ENTRY statement at %C cannot appear within an INTERFACE"); | |
5799 | return MATCH_ERROR; | |
5800 | } | |
5801 | ||
1a492601 | 5802 | module_procedure = gfc_current_ns->parent != NULL |
636dff67 SK |
5803 | && gfc_current_ns->parent->proc_name |
5804 | && gfc_current_ns->parent->proc_name->attr.flavor | |
5805 | == FL_MODULE; | |
1a492601 | 5806 | |
3d79abbd PB |
5807 | if (gfc_current_ns->parent != NULL |
5808 | && gfc_current_ns->parent->proc_name | |
1a492601 | 5809 | && !module_procedure) |
3d79abbd PB |
5810 | { |
5811 | gfc_error("ENTRY statement at %C cannot appear in a " | |
5812 | "contained procedure"); | |
5813 | return MATCH_ERROR; | |
5814 | } | |
5815 | ||
1a492601 PT |
5816 | /* Module function entries need special care in get_proc_name |
5817 | because previous references within the function will have | |
5818 | created symbols attached to the current namespace. */ | |
5819 | if (get_proc_name (name, &entry, | |
5820 | gfc_current_ns->parent != NULL | |
ecd3b73c | 5821 | && module_procedure)) |
6de9cd9a DN |
5822 | return MATCH_ERROR; |
5823 | ||
3d79abbd PB |
5824 | proc = gfc_current_block (); |
5825 | ||
bc3e7a8c TB |
5826 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
5827 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5828 | not allowed for procedures. */ | |
5829 | if (entry->attr.is_bind_c == 1) | |
5830 | { | |
5831 | entry->attr.is_bind_c = 0; | |
5832 | if (entry->old_symbol != NULL) | |
5833 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5834 | "variables or common blocks", | |
5835 | &(entry->old_symbol->declared_at)); | |
5836 | else | |
5837 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5838 | "variables or common blocks", &gfc_current_locus); | |
5839 | } | |
f5acf0f2 | 5840 | |
bc3e7a8c TB |
5841 | /* Check what next non-whitespace character is so we can tell if there |
5842 | is the required parens if we have a BIND(C). */ | |
3a43b5b3 | 5843 | old_loc = gfc_current_locus; |
bc3e7a8c | 5844 | gfc_gobble_whitespace (); |
8fc541d3 | 5845 | peek_char = gfc_peek_ascii_char (); |
bc3e7a8c | 5846 | |
3d79abbd | 5847 | if (state == COMP_SUBROUTINE) |
6de9cd9a | 5848 | { |
6de9cd9a DN |
5849 | m = gfc_match_formal_arglist (entry, 0, 1); |
5850 | if (m != MATCH_YES) | |
5851 | return MATCH_ERROR; | |
5852 | ||
1eabf70a TB |
5853 | /* Call gfc_match_bind_c with allow_binding_name = true as ENTRY can |
5854 | never be an internal procedure. */ | |
5855 | is_bind_c = gfc_match_bind_c (entry, true); | |
bc3e7a8c TB |
5856 | if (is_bind_c == MATCH_ERROR) |
5857 | return MATCH_ERROR; | |
5858 | if (is_bind_c == MATCH_YES) | |
5859 | { | |
5860 | if (peek_char != '(') | |
5861 | { | |
5862 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
5863 | return MATCH_ERROR; | |
5864 | } | |
524af0d6 JB |
5865 | if (!gfc_add_is_bind_c (&(entry->attr), entry->name, |
5866 | &(entry->declared_at), 1)) | |
bc3e7a8c TB |
5867 | return MATCH_ERROR; |
5868 | } | |
5869 | ||
f11de7c5 | 5870 | if (!gfc_current_ns->parent |
3a43b5b3 TB |
5871 | && !add_global_entry (name, entry->binding_label, true, |
5872 | &old_loc)) | |
f11de7c5 TB |
5873 | return MATCH_ERROR; |
5874 | ||
5875 | /* An entry in a subroutine. */ | |
524af0d6 JB |
5876 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
5877 | || !gfc_add_subroutine (&entry->attr, entry->name, NULL)) | |
6de9cd9a | 5878 | return MATCH_ERROR; |
3d79abbd PB |
5879 | } |
5880 | else | |
5881 | { | |
c96cfa49 | 5882 | /* An entry in a function. |
636dff67 SK |
5883 | We need to take special care because writing |
5884 | ENTRY f() | |
5885 | as | |
5886 | ENTRY f | |
5887 | is allowed, whereas | |
5888 | ENTRY f() RESULT (r) | |
5889 | can't be written as | |
5890 | ENTRY f RESULT (r). */ | |
c96cfa49 TS |
5891 | if (gfc_match_eos () == MATCH_YES) |
5892 | { | |
5893 | gfc_current_locus = old_loc; | |
5894 | /* Match the empty argument list, and add the interface to | |
5895 | the symbol. */ | |
5896 | m = gfc_match_formal_arglist (entry, 0, 1); | |
5897 | } | |
5898 | else | |
5899 | m = gfc_match_formal_arglist (entry, 0, 0); | |
5900 | ||
6de9cd9a DN |
5901 | if (m != MATCH_YES) |
5902 | return MATCH_ERROR; | |
5903 | ||
6de9cd9a DN |
5904 | result = NULL; |
5905 | ||
5906 | if (gfc_match_eos () == MATCH_YES) | |
5907 | { | |
524af0d6 JB |
5908 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
5909 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
6de9cd9a DN |
5910 | return MATCH_ERROR; |
5911 | ||
d198b59a | 5912 | entry->result = entry; |
6de9cd9a DN |
5913 | } |
5914 | else | |
5915 | { | |
bc3e7a8c | 5916 | m = gfc_match_suffix (entry, &result); |
6de9cd9a DN |
5917 | if (m == MATCH_NO) |
5918 | gfc_syntax_error (ST_ENTRY); | |
5919 | if (m != MATCH_YES) | |
5920 | return MATCH_ERROR; | |
5921 | ||
bc3e7a8c TB |
5922 | if (result) |
5923 | { | |
524af0d6 JB |
5924 | if (!gfc_add_result (&result->attr, result->name, NULL) |
5925 | || !gfc_add_entry (&entry->attr, result->name, NULL) | |
5926 | || !gfc_add_function (&entry->attr, result->name, NULL)) | |
bc3e7a8c TB |
5927 | return MATCH_ERROR; |
5928 | entry->result = result; | |
5929 | } | |
5930 | else | |
5931 | { | |
524af0d6 JB |
5932 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
5933 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
bc3e7a8c TB |
5934 | return MATCH_ERROR; |
5935 | entry->result = entry; | |
5936 | } | |
6de9cd9a | 5937 | } |
f11de7c5 TB |
5938 | |
5939 | if (!gfc_current_ns->parent | |
3a43b5b3 TB |
5940 | && !add_global_entry (name, entry->binding_label, false, |
5941 | &old_loc)) | |
f11de7c5 | 5942 | return MATCH_ERROR; |
6de9cd9a DN |
5943 | } |
5944 | ||
5945 | if (gfc_match_eos () != MATCH_YES) | |
5946 | { | |
5947 | gfc_syntax_error (ST_ENTRY); | |
5948 | return MATCH_ERROR; | |
5949 | } | |
5950 | ||
3d79abbd PB |
5951 | entry->attr.recursive = proc->attr.recursive; |
5952 | entry->attr.elemental = proc->attr.elemental; | |
5953 | entry->attr.pure = proc->attr.pure; | |
6de9cd9a | 5954 | |
3d79abbd PB |
5955 | el = gfc_get_entry_list (); |
5956 | el->sym = entry; | |
5957 | el->next = gfc_current_ns->entries; | |
5958 | gfc_current_ns->entries = el; | |
5959 | if (el->next) | |
5960 | el->id = el->next->id + 1; | |
5961 | else | |
5962 | el->id = 1; | |
6de9cd9a | 5963 | |
3d79abbd PB |
5964 | new_st.op = EXEC_ENTRY; |
5965 | new_st.ext.entry = el; | |
5966 | ||
5967 | return MATCH_YES; | |
6de9cd9a DN |
5968 | } |
5969 | ||
5970 | ||
5971 | /* Match a subroutine statement, including optional prefixes. */ | |
5972 | ||
5973 | match | |
5974 | gfc_match_subroutine (void) | |
5975 | { | |
5976 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5977 | gfc_symbol *sym; | |
5978 | match m; | |
a8b3b0b6 CR |
5979 | match is_bind_c; |
5980 | char peek_char; | |
1eabf70a | 5981 | bool allow_binding_name; |
6de9cd9a DN |
5982 | |
5983 | if (gfc_current_state () != COMP_NONE | |
5984 | && gfc_current_state () != COMP_INTERFACE | |
5985 | && gfc_current_state () != COMP_CONTAINS) | |
5986 | return MATCH_NO; | |
5987 | ||
1c8bcdf7 | 5988 | m = gfc_match_prefix (NULL); |
6de9cd9a DN |
5989 | if (m != MATCH_YES) |
5990 | return m; | |
5991 | ||
5992 | m = gfc_match ("subroutine% %n", name); | |
5993 | if (m != MATCH_YES) | |
5994 | return m; | |
5995 | ||
1a492601 | 5996 | if (get_proc_name (name, &sym, false)) |
6de9cd9a | 5997 | return MATCH_ERROR; |
3070bab4 | 5998 | |
7fcd5ad5 | 5999 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if |
1cc0e193 | 6000 | the symbol existed before. */ |
7fcd5ad5 TB |
6001 | sym->declared_at = gfc_current_locus; |
6002 | ||
4668d6f9 PT |
6003 | if (current_attr.module_procedure) |
6004 | sym->attr.module_procedure = 1; | |
6005 | ||
524af0d6 | 6006 | if (add_hidden_procptr_result (sym)) |
3070bab4 JW |
6007 | sym = sym->result; |
6008 | ||
6de9cd9a DN |
6009 | gfc_new_block = sym; |
6010 | ||
a8b3b0b6 | 6011 | /* Check what next non-whitespace character is so we can tell if there |
bc3e7a8c | 6012 | is the required parens if we have a BIND(C). */ |
a8b3b0b6 | 6013 | gfc_gobble_whitespace (); |
8fc541d3 | 6014 | peek_char = gfc_peek_ascii_char (); |
f5acf0f2 | 6015 | |
524af0d6 | 6016 | if (!gfc_add_subroutine (&sym->attr, sym->name, NULL)) |
6de9cd9a DN |
6017 | return MATCH_ERROR; |
6018 | ||
6019 | if (gfc_match_formal_arglist (sym, 0, 1) != MATCH_YES) | |
6020 | return MATCH_ERROR; | |
6021 | ||
a8b3b0b6 CR |
6022 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
6023 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
6024 | not allowed for procedures. */ | |
6025 | if (sym->attr.is_bind_c == 1) | |
6026 | { | |
6027 | sym->attr.is_bind_c = 0; | |
6028 | if (sym->old_symbol != NULL) | |
6029 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
6030 | "variables or common blocks", | |
6031 | &(sym->old_symbol->declared_at)); | |
6032 | else | |
6033 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
6034 | "variables or common blocks", &gfc_current_locus); | |
6035 | } | |
1eabf70a TB |
6036 | |
6037 | /* C binding names are not allowed for internal procedures. */ | |
6038 | if (gfc_current_state () == COMP_CONTAINS | |
6039 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
6040 | allow_binding_name = false; | |
6041 | else | |
6042 | allow_binding_name = true; | |
6043 | ||
a8b3b0b6 CR |
6044 | /* Here, we are just checking if it has the bind(c) attribute, and if |
6045 | so, then we need to make sure it's all correct. If it doesn't, | |
6046 | we still need to continue matching the rest of the subroutine line. */ | |
1eabf70a | 6047 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
a8b3b0b6 CR |
6048 | if (is_bind_c == MATCH_ERROR) |
6049 | { | |
6050 | /* There was an attempt at the bind(c), but it was wrong. An | |
6051 | error message should have been printed w/in the gfc_match_bind_c | |
6052 | so here we'll just return the MATCH_ERROR. */ | |
6053 | return MATCH_ERROR; | |
6054 | } | |
6055 | ||
6056 | if (is_bind_c == MATCH_YES) | |
6057 | { | |
1eabf70a | 6058 | /* The following is allowed in the Fortran 2008 draft. */ |
01f4fff1 | 6059 | if (gfc_current_state () == COMP_CONTAINS |
1eabf70a | 6060 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
524af0d6 JB |
6061 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
6062 | "at %L may not be specified for an internal " | |
6063 | "procedure", &gfc_current_locus)) | |
1eabf70a TB |
6064 | return MATCH_ERROR; |
6065 | ||
a8b3b0b6 CR |
6066 | if (peek_char != '(') |
6067 | { | |
6068 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
6069 | return MATCH_ERROR; | |
6070 | } | |
524af0d6 JB |
6071 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, |
6072 | &(sym->declared_at), 1)) | |
a8b3b0b6 CR |
6073 | return MATCH_ERROR; |
6074 | } | |
f5acf0f2 | 6075 | |
6de9cd9a DN |
6076 | if (gfc_match_eos () != MATCH_YES) |
6077 | { | |
6078 | gfc_syntax_error (ST_SUBROUTINE); | |
6079 | return MATCH_ERROR; | |
6080 | } | |
6081 | ||
524af0d6 | 6082 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
6de9cd9a DN |
6083 | return MATCH_ERROR; |
6084 | ||
c3005b0f | 6085 | /* Warn if it has the same name as an intrinsic. */ |
73e42eef | 6086 | do_warn_intrinsic_shadow (sym, false); |
c3005b0f | 6087 | |
6de9cd9a DN |
6088 | return MATCH_YES; |
6089 | } | |
6090 | ||
6091 | ||
3b37ccd4 FXC |
6092 | /* Check that the NAME identifier in a BIND attribute or statement |
6093 | is conform to C identifier rules. */ | |
6094 | ||
6095 | match | |
6096 | check_bind_name_identifier (char **name) | |
6097 | { | |
6098 | char *n = *name, *p; | |
6099 | ||
6100 | /* Remove leading spaces. */ | |
6101 | while (*n == ' ') | |
6102 | n++; | |
6103 | ||
6104 | /* On an empty string, free memory and set name to NULL. */ | |
6105 | if (*n == '\0') | |
6106 | { | |
6107 | free (*name); | |
6108 | *name = NULL; | |
6109 | return MATCH_YES; | |
6110 | } | |
6111 | ||
6112 | /* Remove trailing spaces. */ | |
6113 | p = n + strlen(n) - 1; | |
6114 | while (*p == ' ') | |
6115 | *(p--) = '\0'; | |
6116 | ||
6117 | /* Insert the identifier into the symbol table. */ | |
6118 | p = xstrdup (n); | |
6119 | free (*name); | |
6120 | *name = p; | |
6121 | ||
6122 | /* Now check that identifier is valid under C rules. */ | |
6123 | if (ISDIGIT (*p)) | |
6124 | { | |
6125 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
6126 | return MATCH_ERROR; | |
6127 | } | |
6128 | ||
6129 | for (; *p; p++) | |
6130 | if (!(ISALNUM (*p) || *p == '_' || *p == '$')) | |
6131 | { | |
6132 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
6133 | return MATCH_ERROR; | |
6134 | } | |
6135 | ||
6136 | return MATCH_YES; | |
6137 | } | |
6138 | ||
6139 | ||
a8b3b0b6 CR |
6140 | /* Match a BIND(C) specifier, with the optional 'name=' specifier if |
6141 | given, and set the binding label in either the given symbol (if not | |
86bf520d | 6142 | NULL), or in the current_ts. The symbol may be NULL because we may |
a8b3b0b6 CR |
6143 | encounter the BIND(C) before the declaration itself. Return |
6144 | MATCH_NO if what we're looking at isn't a BIND(C) specifier, | |
6145 | MATCH_ERROR if it is a BIND(C) clause but an error was encountered, | |
6146 | or MATCH_YES if the specifier was correct and the binding label and | |
6147 | bind(c) fields were set correctly for the given symbol or the | |
1eabf70a TB |
6148 | current_ts. If allow_binding_name is false, no binding name may be |
6149 | given. */ | |
a8b3b0b6 CR |
6150 | |
6151 | match | |
1eabf70a | 6152 | gfc_match_bind_c (gfc_symbol *sym, bool allow_binding_name) |
a8b3b0b6 | 6153 | { |
3b37ccd4 FXC |
6154 | char *binding_label = NULL; |
6155 | gfc_expr *e = NULL; | |
a8b3b0b6 | 6156 | |
f5acf0f2 | 6157 | /* Initialize the flag that specifies whether we encountered a NAME= |
a8b3b0b6 CR |
6158 | specifier or not. */ |
6159 | has_name_equals = 0; | |
6160 | ||
a8b3b0b6 CR |
6161 | /* This much we have to be able to match, in this order, if |
6162 | there is a bind(c) label. */ | |
6163 | if (gfc_match (" bind ( c ") != MATCH_YES) | |
6164 | return MATCH_NO; | |
6165 | ||
6166 | /* Now see if there is a binding label, or if we've reached the | |
6167 | end of the bind(c) attribute without one. */ | |
6168 | if (gfc_match_char (',') == MATCH_YES) | |
6169 | { | |
6170 | if (gfc_match (" name = ") != MATCH_YES) | |
6171 | { | |
6172 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
6173 | "at %C"); | |
6174 | /* should give an error message here */ | |
6175 | return MATCH_ERROR; | |
6176 | } | |
6177 | ||
6178 | has_name_equals = 1; | |
6179 | ||
3b37ccd4 FXC |
6180 | if (gfc_match_init_expr (&e) != MATCH_YES) |
6181 | { | |
6182 | gfc_free_expr (e); | |
6183 | return MATCH_ERROR; | |
6184 | } | |
f5acf0f2 | 6185 | |
3b37ccd4 | 6186 | if (!gfc_simplify_expr(e, 0)) |
a8b3b0b6 | 6187 | { |
3b37ccd4 FXC |
6188 | gfc_error ("NAME= specifier at %C should be a constant expression"); |
6189 | gfc_free_expr (e); | |
6190 | return MATCH_ERROR; | |
a8b3b0b6 | 6191 | } |
3b37ccd4 FXC |
6192 | |
6193 | if (e->expr_type != EXPR_CONSTANT || e->ts.type != BT_CHARACTER | |
6194 | || e->ts.kind != gfc_default_character_kind || e->rank != 0) | |
a8b3b0b6 | 6195 | { |
3b37ccd4 FXC |
6196 | gfc_error ("NAME= specifier at %C should be a scalar of " |
6197 | "default character kind"); | |
6198 | gfc_free_expr(e); | |
6199 | return MATCH_ERROR; | |
a8b3b0b6 | 6200 | } |
3b37ccd4 FXC |
6201 | |
6202 | // Get a C string from the Fortran string constant | |
6203 | binding_label = gfc_widechar_to_char (e->value.character.string, | |
6204 | e->value.character.length); | |
6205 | gfc_free_expr(e); | |
6206 | ||
6207 | // Check that it is valid (old gfc_match_name_C) | |
6208 | if (check_bind_name_identifier (&binding_label) != MATCH_YES) | |
6209 | return MATCH_ERROR; | |
6210 | } | |
a8b3b0b6 CR |
6211 | |
6212 | /* Get the required right paren. */ | |
6213 | if (gfc_match_char (')') != MATCH_YES) | |
6214 | { | |
6215 | gfc_error ("Missing closing paren for binding label at %C"); | |
6216 | return MATCH_ERROR; | |
6217 | } | |
6218 | ||
1eabf70a TB |
6219 | if (has_name_equals && !allow_binding_name) |
6220 | { | |
6221 | gfc_error ("No binding name is allowed in BIND(C) at %C"); | |
6222 | return MATCH_ERROR; | |
6223 | } | |
6224 | ||
6225 | if (has_name_equals && sym != NULL && sym->attr.dummy) | |
6226 | { | |
6227 | gfc_error ("For dummy procedure %s, no binding name is " | |
6228 | "allowed in BIND(C) at %C", sym->name); | |
6229 | return MATCH_ERROR; | |
6230 | } | |
6231 | ||
6232 | ||
a8b3b0b6 CR |
6233 | /* Save the binding label to the symbol. If sym is null, we're |
6234 | probably matching the typespec attributes of a declaration and | |
6235 | haven't gotten the name yet, and therefore, no symbol yet. */ | |
62603fae | 6236 | if (binding_label) |
a8b3b0b6 CR |
6237 | { |
6238 | if (sym != NULL) | |
62603fae | 6239 | sym->binding_label = binding_label; |
a8b3b0b6 | 6240 | else |
62603fae | 6241 | curr_binding_label = binding_label; |
a8b3b0b6 | 6242 | } |
1eabf70a | 6243 | else if (allow_binding_name) |
a8b3b0b6 CR |
6244 | { |
6245 | /* No binding label, but if symbol isn't null, we | |
1eabf70a TB |
6246 | can set the label for it here. |
6247 | If name="" or allow_binding_name is false, no C binding name is | |
1cc0e193 | 6248 | created. */ |
a8b3b0b6 | 6249 | if (sym != NULL && sym->name != NULL && has_name_equals == 0) |
62603fae | 6250 | sym->binding_label = IDENTIFIER_POINTER (get_identifier (sym->name)); |
a8b3b0b6 | 6251 | } |
9e1d712c | 6252 | |
129d15a3 JW |
6253 | if (has_name_equals && gfc_current_state () == COMP_INTERFACE |
6254 | && current_interface.type == INTERFACE_ABSTRACT) | |
9e1d712c TB |
6255 | { |
6256 | gfc_error ("NAME not allowed on BIND(C) for ABSTRACT INTERFACE at %C"); | |
6257 | return MATCH_ERROR; | |
6258 | } | |
6259 | ||
a8b3b0b6 CR |
6260 | return MATCH_YES; |
6261 | } | |
6262 | ||
6263 | ||
1f2959f0 | 6264 | /* Return nonzero if we're currently compiling a contained procedure. */ |
ddc9ce91 TS |
6265 | |
6266 | static int | |
6267 | contained_procedure (void) | |
6268 | { | |
083de129 | 6269 | gfc_state_data *s = gfc_state_stack; |
ddc9ce91 | 6270 | |
083de129 TB |
6271 | if ((s->state == COMP_SUBROUTINE || s->state == COMP_FUNCTION) |
6272 | && s->previous != NULL && s->previous->state == COMP_CONTAINS) | |
6273 | return 1; | |
ddc9ce91 TS |
6274 | |
6275 | return 0; | |
6276 | } | |
6277 | ||
d51347f9 | 6278 | /* Set the kind of each enumerator. The kind is selected such that it is |
25d8f0a2 TS |
6279 | interoperable with the corresponding C enumeration type, making |
6280 | sure that -fshort-enums is honored. */ | |
6281 | ||
6282 | static void | |
6283 | set_enum_kind(void) | |
6284 | { | |
6285 | enumerator_history *current_history = NULL; | |
6286 | int kind; | |
6287 | int i; | |
6288 | ||
6289 | if (max_enum == NULL || enum_history == NULL) | |
6290 | return; | |
6291 | ||
cab129d1 | 6292 | if (!flag_short_enums) |
d51347f9 TB |
6293 | return; |
6294 | ||
25d8f0a2 TS |
6295 | i = 0; |
6296 | do | |
6297 | { | |
6298 | kind = gfc_integer_kinds[i++].kind; | |
6299 | } | |
d51347f9 | 6300 | while (kind < gfc_c_int_kind |
25d8f0a2 TS |
6301 | && gfc_check_integer_range (max_enum->initializer->value.integer, |
6302 | kind) != ARITH_OK); | |
6303 | ||
6304 | current_history = enum_history; | |
6305 | while (current_history != NULL) | |
6306 | { | |
6307 | current_history->sym->ts.kind = kind; | |
6308 | current_history = current_history->next; | |
6309 | } | |
6310 | } | |
6311 | ||
636dff67 | 6312 | |
6de9cd9a | 6313 | /* Match any of the various end-block statements. Returns the type of |
9abe5e56 DK |
6314 | END to the caller. The END INTERFACE, END IF, END DO, END SELECT |
6315 | and END BLOCK statements cannot be replaced by a single END statement. */ | |
6de9cd9a DN |
6316 | |
6317 | match | |
636dff67 | 6318 | gfc_match_end (gfc_statement *st) |
6de9cd9a DN |
6319 | { |
6320 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6321 | gfc_compile_state state; | |
6322 | locus old_loc; | |
6323 | const char *block_name; | |
6324 | const char *target; | |
ddc9ce91 | 6325 | int eos_ok; |
6de9cd9a | 6326 | match m; |
0cab6b73 TK |
6327 | gfc_namespace *parent_ns, *ns, *prev_ns; |
6328 | gfc_namespace **nsp; | |
4668d6f9 | 6329 | bool abreviated_modproc_decl; |
6de9cd9a | 6330 | |
63645982 | 6331 | old_loc = gfc_current_locus; |
6de9cd9a DN |
6332 | if (gfc_match ("end") != MATCH_YES) |
6333 | return MATCH_NO; | |
6334 | ||
6335 | state = gfc_current_state (); | |
636dff67 SK |
6336 | block_name = gfc_current_block () == NULL |
6337 | ? NULL : gfc_current_block ()->name; | |
6de9cd9a | 6338 | |
03af1e4c | 6339 | switch (state) |
6de9cd9a | 6340 | { |
03af1e4c DK |
6341 | case COMP_ASSOCIATE: |
6342 | case COMP_BLOCK: | |
3a1fd30c | 6343 | if (!strncmp (block_name, "block@", strlen("block@"))) |
03af1e4c DK |
6344 | block_name = NULL; |
6345 | break; | |
6346 | ||
6347 | case COMP_CONTAINS: | |
6348 | case COMP_DERIVED_CONTAINS: | |
6de9cd9a | 6349 | state = gfc_state_stack->previous->state; |
636dff67 SK |
6350 | block_name = gfc_state_stack->previous->sym == NULL |
6351 | ? NULL : gfc_state_stack->previous->sym->name; | |
03af1e4c DK |
6352 | break; |
6353 | ||
6354 | default: | |
6355 | break; | |
6de9cd9a DN |
6356 | } |
6357 | ||
4668d6f9 PT |
6358 | abreviated_modproc_decl |
6359 | = gfc_current_block () | |
6360 | && gfc_current_block ()->abr_modproc_decl; | |
6361 | ||
6de9cd9a DN |
6362 | switch (state) |
6363 | { | |
6364 | case COMP_NONE: | |
6365 | case COMP_PROGRAM: | |
6366 | *st = ST_END_PROGRAM; | |
6367 | target = " program"; | |
ddc9ce91 | 6368 | eos_ok = 1; |
6de9cd9a DN |
6369 | break; |
6370 | ||
6371 | case COMP_SUBROUTINE: | |
6372 | *st = ST_END_SUBROUTINE; | |
4668d6f9 | 6373 | if (!abreviated_modproc_decl) |
6de9cd9a | 6374 | target = " subroutine"; |
4668d6f9 PT |
6375 | else |
6376 | target = " procedure"; | |
ddc9ce91 | 6377 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
6378 | break; |
6379 | ||
6380 | case COMP_FUNCTION: | |
6381 | *st = ST_END_FUNCTION; | |
4668d6f9 | 6382 | if (!abreviated_modproc_decl) |
6de9cd9a | 6383 | target = " function"; |
4668d6f9 PT |
6384 | else |
6385 | target = " procedure"; | |
ddc9ce91 | 6386 | eos_ok = !contained_procedure (); |
6de9cd9a DN |
6387 | break; |
6388 | ||
6389 | case COMP_BLOCK_DATA: | |
6390 | *st = ST_END_BLOCK_DATA; | |
6391 | target = " block data"; | |
ddc9ce91 | 6392 | eos_ok = 1; |
6de9cd9a DN |
6393 | break; |
6394 | ||
6395 | case COMP_MODULE: | |
6396 | *st = ST_END_MODULE; | |
6397 | target = " module"; | |
ddc9ce91 | 6398 | eos_ok = 1; |
6de9cd9a DN |
6399 | break; |
6400 | ||
4668d6f9 PT |
6401 | case COMP_SUBMODULE: |
6402 | *st = ST_END_SUBMODULE; | |
6403 | target = " submodule"; | |
6404 | eos_ok = 1; | |
6405 | break; | |
6406 | ||
6de9cd9a DN |
6407 | case COMP_INTERFACE: |
6408 | *st = ST_END_INTERFACE; | |
6409 | target = " interface"; | |
ddc9ce91 | 6410 | eos_ok = 0; |
6de9cd9a DN |
6411 | break; |
6412 | ||
6413 | case COMP_DERIVED: | |
30b608eb | 6414 | case COMP_DERIVED_CONTAINS: |
6de9cd9a DN |
6415 | *st = ST_END_TYPE; |
6416 | target = " type"; | |
ddc9ce91 | 6417 | eos_ok = 0; |
6de9cd9a DN |
6418 | break; |
6419 | ||
03af1e4c DK |
6420 | case COMP_ASSOCIATE: |
6421 | *st = ST_END_ASSOCIATE; | |
6422 | target = " associate"; | |
6423 | eos_ok = 0; | |
6424 | break; | |
6425 | ||
9abe5e56 DK |
6426 | case COMP_BLOCK: |
6427 | *st = ST_END_BLOCK; | |
6428 | target = " block"; | |
6429 | eos_ok = 0; | |
6430 | break; | |
6431 | ||
6de9cd9a DN |
6432 | case COMP_IF: |
6433 | *st = ST_ENDIF; | |
6434 | target = " if"; | |
ddc9ce91 | 6435 | eos_ok = 0; |
6de9cd9a DN |
6436 | break; |
6437 | ||
6438 | case COMP_DO: | |
8c6a85e3 | 6439 | case COMP_DO_CONCURRENT: |
6de9cd9a DN |
6440 | *st = ST_ENDDO; |
6441 | target = " do"; | |
ddc9ce91 | 6442 | eos_ok = 0; |
6de9cd9a DN |
6443 | break; |
6444 | ||
d0a4a61c TB |
6445 | case COMP_CRITICAL: |
6446 | *st = ST_END_CRITICAL; | |
6447 | target = " critical"; | |
6448 | eos_ok = 0; | |
6449 | break; | |
6450 | ||
6de9cd9a | 6451 | case COMP_SELECT: |
cf2b3c22 | 6452 | case COMP_SELECT_TYPE: |
6de9cd9a DN |
6453 | *st = ST_END_SELECT; |
6454 | target = " select"; | |
ddc9ce91 | 6455 | eos_ok = 0; |
6de9cd9a DN |
6456 | break; |
6457 | ||
6458 | case COMP_FORALL: | |
6459 | *st = ST_END_FORALL; | |
6460 | target = " forall"; | |
ddc9ce91 | 6461 | eos_ok = 0; |
6de9cd9a DN |
6462 | break; |
6463 | ||
6464 | case COMP_WHERE: | |
6465 | *st = ST_END_WHERE; | |
6466 | target = " where"; | |
ddc9ce91 | 6467 | eos_ok = 0; |
6de9cd9a DN |
6468 | break; |
6469 | ||
25d8f0a2 TS |
6470 | case COMP_ENUM: |
6471 | *st = ST_END_ENUM; | |
6472 | target = " enum"; | |
6473 | eos_ok = 0; | |
6474 | last_initializer = NULL; | |
6475 | set_enum_kind (); | |
6476 | gfc_free_enum_history (); | |
6477 | break; | |
6478 | ||
6de9cd9a DN |
6479 | default: |
6480 | gfc_error ("Unexpected END statement at %C"); | |
6481 | goto cleanup; | |
6482 | } | |
6483 | ||
3a43b5b3 | 6484 | old_loc = gfc_current_locus; |
6de9cd9a DN |
6485 | if (gfc_match_eos () == MATCH_YES) |
6486 | { | |
272001a2 TB |
6487 | if (!eos_ok && (*st == ST_END_SUBROUTINE || *st == ST_END_FUNCTION)) |
6488 | { | |
524af0d6 JB |
6489 | if (!gfc_notify_std (GFC_STD_F2008, "END statement " |
6490 | "instead of %s statement at %L", | |
4668d6f9 PT |
6491 | abreviated_modproc_decl ? "END PROCEDURE" |
6492 | : gfc_ascii_statement(*st), &old_loc)) | |
272001a2 TB |
6493 | goto cleanup; |
6494 | } | |
6495 | else if (!eos_ok) | |
6de9cd9a | 6496 | { |
66e4ab31 | 6497 | /* We would have required END [something]. */ |
59ce85b5 TS |
6498 | gfc_error ("%s statement expected at %L", |
6499 | gfc_ascii_statement (*st), &old_loc); | |
6de9cd9a DN |
6500 | goto cleanup; |
6501 | } | |
6502 | ||
6503 | return MATCH_YES; | |
6504 | } | |
6505 | ||
6506 | /* Verify that we've got the sort of end-block that we're expecting. */ | |
6507 | if (gfc_match (target) != MATCH_YES) | |
6508 | { | |
4668d6f9 PT |
6509 | gfc_error ("Expecting %s statement at %L", abreviated_modproc_decl |
6510 | ? "END PROCEDURE" : gfc_ascii_statement(*st), &old_loc); | |
6de9cd9a DN |
6511 | goto cleanup; |
6512 | } | |
6513 | ||
3a43b5b3 | 6514 | old_loc = gfc_current_locus; |
6de9cd9a DN |
6515 | /* If we're at the end, make sure a block name wasn't required. */ |
6516 | if (gfc_match_eos () == MATCH_YES) | |
6517 | { | |
6518 | ||
690af379 | 6519 | if (*st != ST_ENDDO && *st != ST_ENDIF && *st != ST_END_SELECT |
d0a4a61c | 6520 | && *st != ST_END_FORALL && *st != ST_END_WHERE && *st != ST_END_BLOCK |
03af1e4c | 6521 | && *st != ST_END_ASSOCIATE && *st != ST_END_CRITICAL) |
6de9cd9a DN |
6522 | return MATCH_YES; |
6523 | ||
9abe5e56 | 6524 | if (!block_name) |
6de9cd9a DN |
6525 | return MATCH_YES; |
6526 | ||
c4100eae | 6527 | gfc_error ("Expected block name of %qs in %s statement at %L", |
3a43b5b3 | 6528 | block_name, gfc_ascii_statement (*st), &old_loc); |
6de9cd9a DN |
6529 | |
6530 | return MATCH_ERROR; | |
6531 | } | |
6532 | ||
6533 | /* END INTERFACE has a special handler for its several possible endings. */ | |
6534 | if (*st == ST_END_INTERFACE) | |
6535 | return gfc_match_end_interface (); | |
6536 | ||
66e4ab31 SK |
6537 | /* We haven't hit the end of statement, so what is left must be an |
6538 | end-name. */ | |
6de9cd9a DN |
6539 | m = gfc_match_space (); |
6540 | if (m == MATCH_YES) | |
6541 | m = gfc_match_name (name); | |
6542 | ||
6543 | if (m == MATCH_NO) | |
6544 | gfc_error ("Expected terminating name at %C"); | |
6545 | if (m != MATCH_YES) | |
6546 | goto cleanup; | |
6547 | ||
6548 | if (block_name == NULL) | |
6549 | goto syntax; | |
6550 | ||
3d5dc929 PT |
6551 | /* We have to pick out the declared submodule name from the composite |
6552 | required by F2008:11.2.3 para 2, which ends in the declared name. */ | |
6553 | if (state == COMP_SUBMODULE) | |
6554 | block_name = strchr (block_name, '.') + 1; | |
6555 | ||
3070bab4 | 6556 | if (strcmp (name, block_name) != 0 && strcmp (block_name, "ppr@") != 0) |
6de9cd9a | 6557 | { |
c4100eae | 6558 | gfc_error ("Expected label %qs for %s statement at %C", block_name, |
6de9cd9a DN |
6559 | gfc_ascii_statement (*st)); |
6560 | goto cleanup; | |
6561 | } | |
3070bab4 JW |
6562 | /* Procedure pointer as function result. */ |
6563 | else if (strcmp (block_name, "ppr@") == 0 | |
6564 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) != 0) | |
6565 | { | |
c4100eae | 6566 | gfc_error ("Expected label %qs for %s statement at %C", |
3070bab4 JW |
6567 | gfc_current_block ()->ns->proc_name->name, |
6568 | gfc_ascii_statement (*st)); | |
6569 | goto cleanup; | |
6570 | } | |
6de9cd9a DN |
6571 | |
6572 | if (gfc_match_eos () == MATCH_YES) | |
6573 | return MATCH_YES; | |
6574 | ||
6575 | syntax: | |
6576 | gfc_syntax_error (*st); | |
6577 | ||
6578 | cleanup: | |
63645982 | 6579 | gfc_current_locus = old_loc; |
0cab6b73 TK |
6580 | |
6581 | /* If we are missing an END BLOCK, we created a half-ready namespace. | |
6582 | Remove it from the parent namespace's sibling list. */ | |
6583 | ||
9f7ba208 | 6584 | while (state == COMP_BLOCK) |
0cab6b73 TK |
6585 | { |
6586 | parent_ns = gfc_current_ns->parent; | |
6587 | ||
6588 | nsp = &(gfc_state_stack->previous->tail->ext.block.ns); | |
6589 | ||
6590 | prev_ns = NULL; | |
6591 | ns = *nsp; | |
6592 | while (ns) | |
6593 | { | |
6594 | if (ns == gfc_current_ns) | |
6595 | { | |
6596 | if (prev_ns == NULL) | |
6597 | *nsp = NULL; | |
6598 | else | |
6599 | prev_ns->sibling = ns->sibling; | |
6600 | } | |
6601 | prev_ns = ns; | |
6602 | ns = ns->sibling; | |
6603 | } | |
6604 | ||
6605 | gfc_free_namespace (gfc_current_ns); | |
6606 | gfc_current_ns = parent_ns; | |
9f7ba208 LK |
6607 | gfc_state_stack = gfc_state_stack->previous; |
6608 | state = gfc_current_state (); | |
0cab6b73 TK |
6609 | } |
6610 | ||
6de9cd9a DN |
6611 | return MATCH_ERROR; |
6612 | } | |
6613 | ||
6614 | ||
6615 | ||
6616 | /***************** Attribute declaration statements ****************/ | |
6617 | ||
6618 | /* Set the attribute of a single variable. */ | |
6619 | ||
6620 | static match | |
6621 | attr_decl1 (void) | |
6622 | { | |
6623 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6624 | gfc_array_spec *as; | |
97440db5 ML |
6625 | |
6626 | /* Workaround -Wmaybe-uninitialized false positive during | |
6627 | profiledbootstrap by initializing them. */ | |
6628 | gfc_symbol *sym = NULL; | |
6de9cd9a DN |
6629 | locus var_locus; |
6630 | match m; | |
6631 | ||
6632 | as = NULL; | |
6633 | ||
6634 | m = gfc_match_name (name); | |
6635 | if (m != MATCH_YES) | |
6636 | goto cleanup; | |
6637 | ||
08a6b8e0 | 6638 | if (find_special (name, &sym, false)) |
6de9cd9a DN |
6639 | return MATCH_ERROR; |
6640 | ||
524af0d6 | 6641 | if (!check_function_name (name)) |
bb9de0c4 JW |
6642 | { |
6643 | m = MATCH_ERROR; | |
6644 | goto cleanup; | |
6645 | } | |
f5acf0f2 | 6646 | |
63645982 | 6647 | var_locus = gfc_current_locus; |
6de9cd9a DN |
6648 | |
6649 | /* Deal with possible array specification for certain attributes. */ | |
6650 | if (current_attr.dimension | |
be59db2d | 6651 | || current_attr.codimension |
6de9cd9a DN |
6652 | || current_attr.allocatable |
6653 | || current_attr.pointer | |
6654 | || current_attr.target) | |
6655 | { | |
be59db2d TB |
6656 | m = gfc_match_array_spec (&as, !current_attr.codimension, |
6657 | !current_attr.dimension | |
6658 | && !current_attr.pointer | |
6659 | && !current_attr.target); | |
6de9cd9a DN |
6660 | if (m == MATCH_ERROR) |
6661 | goto cleanup; | |
6662 | ||
6663 | if (current_attr.dimension && m == MATCH_NO) | |
6664 | { | |
636dff67 SK |
6665 | gfc_error ("Missing array specification at %L in DIMENSION " |
6666 | "statement", &var_locus); | |
6de9cd9a DN |
6667 | m = MATCH_ERROR; |
6668 | goto cleanup; | |
6669 | } | |
6670 | ||
1283ab12 TB |
6671 | if (current_attr.dimension && sym->value) |
6672 | { | |
6673 | gfc_error ("Dimensions specified for %s at %L after its " | |
6674 | "initialisation", sym->name, &var_locus); | |
6675 | m = MATCH_ERROR; | |
6676 | goto cleanup; | |
6677 | } | |
6678 | ||
be59db2d TB |
6679 | if (current_attr.codimension && m == MATCH_NO) |
6680 | { | |
6681 | gfc_error ("Missing array specification at %L in CODIMENSION " | |
6682 | "statement", &var_locus); | |
6683 | m = MATCH_ERROR; | |
6684 | goto cleanup; | |
6685 | } | |
6686 | ||
6de9cd9a DN |
6687 | if ((current_attr.allocatable || current_attr.pointer) |
6688 | && (m == MATCH_YES) && (as->type != AS_DEFERRED)) | |
6689 | { | |
636dff67 | 6690 | gfc_error ("Array specification must be deferred at %L", &var_locus); |
6de9cd9a DN |
6691 | m = MATCH_ERROR; |
6692 | goto cleanup; | |
6693 | } | |
6694 | } | |
6695 | ||
2e23972e JW |
6696 | /* Update symbol table. DIMENSION attribute is set in |
6697 | gfc_set_array_spec(). For CLASS variables, this must be applied | |
b04533af | 6698 | to the first component, or '_data' field. */ |
d40477b4 | 6699 | if (sym->ts.type == BT_CLASS && sym->ts.u.derived->attr.is_class) |
6de9cd9a | 6700 | { |
524af0d6 | 6701 | if (!gfc_copy_attr (&CLASS_DATA(sym)->attr, ¤t_attr, &var_locus)) |
2e23972e JW |
6702 | { |
6703 | m = MATCH_ERROR; | |
6704 | goto cleanup; | |
6705 | } | |
2e23972e JW |
6706 | } |
6707 | else | |
6708 | { | |
be59db2d | 6709 | if (current_attr.dimension == 0 && current_attr.codimension == 0 |
524af0d6 | 6710 | && !gfc_copy_attr (&sym->attr, ¤t_attr, &var_locus)) |
2e23972e JW |
6711 | { |
6712 | m = MATCH_ERROR; | |
6713 | goto cleanup; | |
6714 | } | |
6de9cd9a | 6715 | } |
f5acf0f2 | 6716 | |
528622fd | 6717 | if (sym->ts.type == BT_CLASS |
9b6da3c7 | 6718 | && !gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as)) |
96d9b22c JW |
6719 | { |
6720 | m = MATCH_ERROR; | |
6721 | goto cleanup; | |
6722 | } | |
6de9cd9a | 6723 | |
524af0d6 | 6724 | if (!gfc_set_array_spec (sym, as, &var_locus)) |
6de9cd9a DN |
6725 | { |
6726 | m = MATCH_ERROR; | |
6727 | goto cleanup; | |
6728 | } | |
d51347f9 | 6729 | |
83d890b9 AL |
6730 | if (sym->attr.cray_pointee && sym->as != NULL) |
6731 | { | |
6732 | /* Fix the array spec. */ | |
f5acf0f2 | 6733 | m = gfc_mod_pointee_as (sym->as); |
83d890b9 AL |
6734 | if (m == MATCH_ERROR) |
6735 | goto cleanup; | |
6736 | } | |
6de9cd9a | 6737 | |
524af0d6 | 6738 | if (!gfc_add_attribute (&sym->attr, &var_locus)) |
1902704e PT |
6739 | { |
6740 | m = MATCH_ERROR; | |
6741 | goto cleanup; | |
6742 | } | |
6743 | ||
6de9cd9a DN |
6744 | if ((current_attr.external || current_attr.intrinsic) |
6745 | && sym->attr.flavor != FL_PROCEDURE | |
524af0d6 | 6746 | && !gfc_add_flavor (&sym->attr, FL_PROCEDURE, sym->name, NULL)) |
6de9cd9a DN |
6747 | { |
6748 | m = MATCH_ERROR; | |
6749 | goto cleanup; | |
6750 | } | |
6751 | ||
3070bab4 JW |
6752 | add_hidden_procptr_result (sym); |
6753 | ||
6de9cd9a DN |
6754 | return MATCH_YES; |
6755 | ||
6756 | cleanup: | |
6757 | gfc_free_array_spec (as); | |
6758 | return m; | |
6759 | } | |
6760 | ||
6761 | ||
6762 | /* Generic attribute declaration subroutine. Used for attributes that | |
6763 | just have a list of names. */ | |
6764 | ||
6765 | static match | |
6766 | attr_decl (void) | |
6767 | { | |
6768 | match m; | |
6769 | ||
6770 | /* Gobble the optional double colon, by simply ignoring the result | |
6771 | of gfc_match(). */ | |
6772 | gfc_match (" ::"); | |
6773 | ||
6774 | for (;;) | |
6775 | { | |
6776 | m = attr_decl1 (); | |
6777 | if (m != MATCH_YES) | |
6778 | break; | |
6779 | ||
6780 | if (gfc_match_eos () == MATCH_YES) | |
6781 | { | |
6782 | m = MATCH_YES; | |
6783 | break; | |
6784 | } | |
6785 | ||
6786 | if (gfc_match_char (',') != MATCH_YES) | |
6787 | { | |
6788 | gfc_error ("Unexpected character in variable list at %C"); | |
6789 | m = MATCH_ERROR; | |
6790 | break; | |
6791 | } | |
6792 | } | |
6793 | ||
6794 | return m; | |
6795 | } | |
6796 | ||
6797 | ||
83d890b9 AL |
6798 | /* This routine matches Cray Pointer declarations of the form: |
6799 | pointer ( <pointer>, <pointee> ) | |
6800 | or | |
d51347f9 TB |
6801 | pointer ( <pointer1>, <pointee1> ), ( <pointer2>, <pointee2> ), ... |
6802 | The pointer, if already declared, should be an integer. Otherwise, we | |
83d890b9 AL |
6803 | set it as BT_INTEGER with kind gfc_index_integer_kind. The pointee may |
6804 | be either a scalar, or an array declaration. No space is allocated for | |
d51347f9 | 6805 | the pointee. For the statement |
83d890b9 AL |
6806 | pointer (ipt, ar(10)) |
6807 | any subsequent uses of ar will be translated (in C-notation) as | |
d51347f9 | 6808 | ar(i) => ((<type> *) ipt)(i) |
b122dc6a | 6809 | After gimplification, pointee variable will disappear in the code. */ |
83d890b9 AL |
6810 | |
6811 | static match | |
6812 | cray_pointer_decl (void) | |
6813 | { | |
6814 | match m; | |
be59db2d | 6815 | gfc_array_spec *as = NULL; |
83d890b9 AL |
6816 | gfc_symbol *cptr; /* Pointer symbol. */ |
6817 | gfc_symbol *cpte; /* Pointee symbol. */ | |
6818 | locus var_locus; | |
6819 | bool done = false; | |
6820 | ||
6821 | while (!done) | |
6822 | { | |
6823 | if (gfc_match_char ('(') != MATCH_YES) | |
6824 | { | |
a4d9b221 | 6825 | gfc_error ("Expected %<(%> at %C"); |
d51347f9 | 6826 | return MATCH_ERROR; |
83d890b9 | 6827 | } |
d51347f9 | 6828 | |
83d890b9 AL |
6829 | /* Match pointer. */ |
6830 | var_locus = gfc_current_locus; | |
6831 | gfc_clear_attr (¤t_attr); | |
6832 | gfc_add_cray_pointer (¤t_attr, &var_locus); | |
6833 | current_ts.type = BT_INTEGER; | |
6834 | current_ts.kind = gfc_index_integer_kind; | |
6835 | ||
d51347f9 | 6836 | m = gfc_match_symbol (&cptr, 0); |
83d890b9 AL |
6837 | if (m != MATCH_YES) |
6838 | { | |
6839 | gfc_error ("Expected variable name at %C"); | |
6840 | return m; | |
6841 | } | |
d51347f9 | 6842 | |
524af0d6 | 6843 | if (!gfc_add_cray_pointer (&cptr->attr, &var_locus)) |
83d890b9 AL |
6844 | return MATCH_ERROR; |
6845 | ||
d51347f9 | 6846 | gfc_set_sym_referenced (cptr); |
83d890b9 AL |
6847 | |
6848 | if (cptr->ts.type == BT_UNKNOWN) /* Override the type, if necessary. */ | |
6849 | { | |
6850 | cptr->ts.type = BT_INTEGER; | |
d51347f9 | 6851 | cptr->ts.kind = gfc_index_integer_kind; |
83d890b9 AL |
6852 | } |
6853 | else if (cptr->ts.type != BT_INTEGER) | |
6854 | { | |
e25a0da3 | 6855 | gfc_error ("Cray pointer at %C must be an integer"); |
83d890b9 AL |
6856 | return MATCH_ERROR; |
6857 | } | |
6858 | else if (cptr->ts.kind < gfc_index_integer_kind) | |
db30e21c | 6859 | gfc_warning (0, "Cray pointer at %C has %d bytes of precision;" |
e25a0da3 | 6860 | " memory addresses require %d bytes", |
636dff67 | 6861 | cptr->ts.kind, gfc_index_integer_kind); |
83d890b9 AL |
6862 | |
6863 | if (gfc_match_char (',') != MATCH_YES) | |
6864 | { | |
6865 | gfc_error ("Expected \",\" at %C"); | |
d51347f9 | 6866 | return MATCH_ERROR; |
83d890b9 AL |
6867 | } |
6868 | ||
d51347f9 | 6869 | /* Match Pointee. */ |
83d890b9 AL |
6870 | var_locus = gfc_current_locus; |
6871 | gfc_clear_attr (¤t_attr); | |
6872 | gfc_add_cray_pointee (¤t_attr, &var_locus); | |
6873 | current_ts.type = BT_UNKNOWN; | |
6874 | current_ts.kind = 0; | |
6875 | ||
6876 | m = gfc_match_symbol (&cpte, 0); | |
6877 | if (m != MATCH_YES) | |
6878 | { | |
6879 | gfc_error ("Expected variable name at %C"); | |
6880 | return m; | |
6881 | } | |
d51347f9 | 6882 | |
83d890b9 | 6883 | /* Check for an optional array spec. */ |
be59db2d | 6884 | m = gfc_match_array_spec (&as, true, false); |
83d890b9 AL |
6885 | if (m == MATCH_ERROR) |
6886 | { | |
6887 | gfc_free_array_spec (as); | |
6888 | return m; | |
6889 | } | |
6890 | else if (m == MATCH_NO) | |
6891 | { | |
6892 | gfc_free_array_spec (as); | |
6893 | as = NULL; | |
f5acf0f2 | 6894 | } |
83d890b9 | 6895 | |
524af0d6 | 6896 | if (!gfc_add_cray_pointee (&cpte->attr, &var_locus)) |
83d890b9 AL |
6897 | return MATCH_ERROR; |
6898 | ||
6899 | gfc_set_sym_referenced (cpte); | |
6900 | ||
6901 | if (cpte->as == NULL) | |
6902 | { | |
524af0d6 | 6903 | if (!gfc_set_array_spec (cpte, as, &var_locus)) |
83d890b9 AL |
6904 | gfc_internal_error ("Couldn't set Cray pointee array spec."); |
6905 | } | |
6906 | else if (as != NULL) | |
6907 | { | |
e25a0da3 | 6908 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
83d890b9 AL |
6909 | gfc_free_array_spec (as); |
6910 | return MATCH_ERROR; | |
6911 | } | |
f5acf0f2 | 6912 | |
83d890b9 | 6913 | as = NULL; |
f5acf0f2 | 6914 | |
83d890b9 AL |
6915 | if (cpte->as != NULL) |
6916 | { | |
6917 | /* Fix array spec. */ | |
6918 | m = gfc_mod_pointee_as (cpte->as); | |
6919 | if (m == MATCH_ERROR) | |
6920 | return m; | |
f5acf0f2 PT |
6921 | } |
6922 | ||
83d890b9 | 6923 | /* Point the Pointee at the Pointer. */ |
b122dc6a | 6924 | cpte->cp_pointer = cptr; |
83d890b9 AL |
6925 | |
6926 | if (gfc_match_char (')') != MATCH_YES) | |
6927 | { | |
6928 | gfc_error ("Expected \")\" at %C"); | |
f5acf0f2 | 6929 | return MATCH_ERROR; |
83d890b9 AL |
6930 | } |
6931 | m = gfc_match_char (','); | |
6932 | if (m != MATCH_YES) | |
6933 | done = true; /* Stop searching for more declarations. */ | |
6934 | ||
6935 | } | |
f5acf0f2 | 6936 | |
83d890b9 AL |
6937 | if (m == MATCH_ERROR /* Failed when trying to find ',' above. */ |
6938 | || gfc_match_eos () != MATCH_YES) | |
6939 | { | |
a4d9b221 | 6940 | gfc_error ("Expected %<,%> or end of statement at %C"); |
83d890b9 AL |
6941 | return MATCH_ERROR; |
6942 | } | |
6943 | return MATCH_YES; | |
6944 | } | |
6945 | ||
6946 | ||
6de9cd9a DN |
6947 | match |
6948 | gfc_match_external (void) | |
6949 | { | |
6950 | ||
6951 | gfc_clear_attr (¤t_attr); | |
1902704e | 6952 | current_attr.external = 1; |
6de9cd9a DN |
6953 | |
6954 | return attr_decl (); | |
6955 | } | |
6956 | ||
6957 | ||
6de9cd9a DN |
6958 | match |
6959 | gfc_match_intent (void) | |
6960 | { | |
6961 | sym_intent intent; | |
6962 | ||
9abe5e56 DK |
6963 | /* This is not allowed within a BLOCK construct! */ |
6964 | if (gfc_current_state () == COMP_BLOCK) | |
6965 | { | |
6966 | gfc_error ("INTENT is not allowed inside of BLOCK at %C"); | |
6967 | return MATCH_ERROR; | |
6968 | } | |
6969 | ||
6de9cd9a DN |
6970 | intent = match_intent_spec (); |
6971 | if (intent == INTENT_UNKNOWN) | |
6972 | return MATCH_ERROR; | |
6973 | ||
6974 | gfc_clear_attr (¤t_attr); | |
1902704e | 6975 | current_attr.intent = intent; |
6de9cd9a DN |
6976 | |
6977 | return attr_decl (); | |
6978 | } | |
6979 | ||
6980 | ||
6981 | match | |
6982 | gfc_match_intrinsic (void) | |
6983 | { | |
6984 | ||
6985 | gfc_clear_attr (¤t_attr); | |
1902704e | 6986 | current_attr.intrinsic = 1; |
6de9cd9a DN |
6987 | |
6988 | return attr_decl (); | |
6989 | } | |
6990 | ||
6991 | ||
6992 | match | |
6993 | gfc_match_optional (void) | |
6994 | { | |
9abe5e56 DK |
6995 | /* This is not allowed within a BLOCK construct! */ |
6996 | if (gfc_current_state () == COMP_BLOCK) | |
6997 | { | |
6998 | gfc_error ("OPTIONAL is not allowed inside of BLOCK at %C"); | |
6999 | return MATCH_ERROR; | |
7000 | } | |
6de9cd9a DN |
7001 | |
7002 | gfc_clear_attr (¤t_attr); | |
1902704e | 7003 | current_attr.optional = 1; |
6de9cd9a DN |
7004 | |
7005 | return attr_decl (); | |
7006 | } | |
7007 | ||
7008 | ||
7009 | match | |
7010 | gfc_match_pointer (void) | |
7011 | { | |
83d890b9 | 7012 | gfc_gobble_whitespace (); |
8fc541d3 | 7013 | if (gfc_peek_ascii_char () == '(') |
83d890b9 | 7014 | { |
c61819ff | 7015 | if (!flag_cray_pointer) |
83d890b9 | 7016 | { |
636dff67 SK |
7017 | gfc_error ("Cray pointer declaration at %C requires -fcray-pointer " |
7018 | "flag"); | |
83d890b9 AL |
7019 | return MATCH_ERROR; |
7020 | } | |
7021 | return cray_pointer_decl (); | |
7022 | } | |
7023 | else | |
7024 | { | |
7025 | gfc_clear_attr (¤t_attr); | |
1902704e | 7026 | current_attr.pointer = 1; |
f5acf0f2 | 7027 | |
83d890b9 AL |
7028 | return attr_decl (); |
7029 | } | |
6de9cd9a DN |
7030 | } |
7031 | ||
7032 | ||
7033 | match | |
7034 | gfc_match_allocatable (void) | |
7035 | { | |
6de9cd9a | 7036 | gfc_clear_attr (¤t_attr); |
1902704e | 7037 | current_attr.allocatable = 1; |
6de9cd9a DN |
7038 | |
7039 | return attr_decl (); | |
7040 | } | |
7041 | ||
7042 | ||
be59db2d TB |
7043 | match |
7044 | gfc_match_codimension (void) | |
7045 | { | |
7046 | gfc_clear_attr (¤t_attr); | |
7047 | current_attr.codimension = 1; | |
7048 | ||
7049 | return attr_decl (); | |
7050 | } | |
7051 | ||
7052 | ||
fe4e525c TB |
7053 | match |
7054 | gfc_match_contiguous (void) | |
7055 | { | |
524af0d6 | 7056 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS statement at %C")) |
fe4e525c TB |
7057 | return MATCH_ERROR; |
7058 | ||
7059 | gfc_clear_attr (¤t_attr); | |
7060 | current_attr.contiguous = 1; | |
7061 | ||
7062 | return attr_decl (); | |
7063 | } | |
7064 | ||
7065 | ||
6de9cd9a DN |
7066 | match |
7067 | gfc_match_dimension (void) | |
7068 | { | |
6de9cd9a | 7069 | gfc_clear_attr (¤t_attr); |
1902704e | 7070 | current_attr.dimension = 1; |
6de9cd9a DN |
7071 | |
7072 | return attr_decl (); | |
7073 | } | |
7074 | ||
7075 | ||
7076 | match | |
7077 | gfc_match_target (void) | |
7078 | { | |
6de9cd9a | 7079 | gfc_clear_attr (¤t_attr); |
1902704e | 7080 | current_attr.target = 1; |
6de9cd9a DN |
7081 | |
7082 | return attr_decl (); | |
7083 | } | |
7084 | ||
7085 | ||
7086 | /* Match the list of entities being specified in a PUBLIC or PRIVATE | |
7087 | statement. */ | |
7088 | ||
7089 | static match | |
7090 | access_attr_decl (gfc_statement st) | |
7091 | { | |
7092 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7093 | interface_type type; | |
7094 | gfc_user_op *uop; | |
c3f34952 | 7095 | gfc_symbol *sym, *dt_sym; |
a1ee985f | 7096 | gfc_intrinsic_op op; |
6de9cd9a DN |
7097 | match m; |
7098 | ||
7099 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7100 | goto done; | |
7101 | ||
7102 | for (;;) | |
7103 | { | |
a1ee985f | 7104 | m = gfc_match_generic_spec (&type, name, &op); |
6de9cd9a DN |
7105 | if (m == MATCH_NO) |
7106 | goto syntax; | |
7107 | if (m == MATCH_ERROR) | |
7108 | return MATCH_ERROR; | |
7109 | ||
7110 | switch (type) | |
7111 | { | |
7112 | case INTERFACE_NAMELESS: | |
9e1d712c | 7113 | case INTERFACE_ABSTRACT: |
6de9cd9a DN |
7114 | goto syntax; |
7115 | ||
7116 | case INTERFACE_GENERIC: | |
7117 | if (gfc_get_symbol (name, NULL, &sym)) | |
7118 | goto done; | |
7119 | ||
524af0d6 JB |
7120 | if (!gfc_add_access (&sym->attr, |
7121 | (st == ST_PUBLIC) | |
7122 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
7123 | sym->name, NULL)) | |
6de9cd9a DN |
7124 | return MATCH_ERROR; |
7125 | ||
c3f34952 | 7126 | if (sym->attr.generic && (dt_sym = gfc_find_dt_in_generic (sym)) |
524af0d6 JB |
7127 | && !gfc_add_access (&dt_sym->attr, |
7128 | (st == ST_PUBLIC) | |
7129 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
7130 | sym->name, NULL)) | |
c3f34952 TB |
7131 | return MATCH_ERROR; |
7132 | ||
6de9cd9a DN |
7133 | break; |
7134 | ||
7135 | case INTERFACE_INTRINSIC_OP: | |
a1ee985f | 7136 | if (gfc_current_ns->operator_access[op] == ACCESS_UNKNOWN) |
6de9cd9a | 7137 | { |
fb03a37e TK |
7138 | gfc_intrinsic_op other_op; |
7139 | ||
a1ee985f | 7140 | gfc_current_ns->operator_access[op] = |
6de9cd9a | 7141 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; |
fb03a37e TK |
7142 | |
7143 | /* Handle the case if there is another op with the same | |
7144 | function, for INTRINSIC_EQ vs. INTRINSIC_EQ_OS and so on. */ | |
7145 | other_op = gfc_equivalent_op (op); | |
7146 | ||
7147 | if (other_op != INTRINSIC_NONE) | |
7148 | gfc_current_ns->operator_access[other_op] = | |
7149 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
7150 | ||
6de9cd9a DN |
7151 | } |
7152 | else | |
7153 | { | |
7154 | gfc_error ("Access specification of the %s operator at %C has " | |
a1ee985f | 7155 | "already been specified", gfc_op2string (op)); |
6de9cd9a DN |
7156 | goto done; |
7157 | } | |
7158 | ||
7159 | break; | |
7160 | ||
7161 | case INTERFACE_USER_OP: | |
7162 | uop = gfc_get_uop (name); | |
7163 | ||
7164 | if (uop->access == ACCESS_UNKNOWN) | |
7165 | { | |
636dff67 SK |
7166 | uop->access = (st == ST_PUBLIC) |
7167 | ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
6de9cd9a DN |
7168 | } |
7169 | else | |
7170 | { | |
636dff67 SK |
7171 | gfc_error ("Access specification of the .%s. operator at %C " |
7172 | "has already been specified", sym->name); | |
6de9cd9a DN |
7173 | goto done; |
7174 | } | |
7175 | ||
7176 | break; | |
7177 | } | |
7178 | ||
7179 | if (gfc_match_char (',') == MATCH_NO) | |
7180 | break; | |
7181 | } | |
7182 | ||
7183 | if (gfc_match_eos () != MATCH_YES) | |
7184 | goto syntax; | |
7185 | return MATCH_YES; | |
7186 | ||
7187 | syntax: | |
7188 | gfc_syntax_error (st); | |
7189 | ||
7190 | done: | |
7191 | return MATCH_ERROR; | |
7192 | } | |
7193 | ||
7194 | ||
ee7e677f TB |
7195 | match |
7196 | gfc_match_protected (void) | |
7197 | { | |
7198 | gfc_symbol *sym; | |
7199 | match m; | |
7200 | ||
73641c88 SK |
7201 | if (!gfc_current_ns->proc_name |
7202 | || gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
ee7e677f TB |
7203 | { |
7204 | gfc_error ("PROTECTED at %C only allowed in specification " | |
7205 | "part of a module"); | |
7206 | return MATCH_ERROR; | |
7207 | ||
7208 | } | |
7209 | ||
524af0d6 | 7210 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED statement at %C")) |
ee7e677f TB |
7211 | return MATCH_ERROR; |
7212 | ||
7213 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7214 | { | |
7215 | return MATCH_ERROR; | |
7216 | } | |
7217 | ||
7218 | if (gfc_match_eos () == MATCH_YES) | |
7219 | goto syntax; | |
7220 | ||
7221 | for(;;) | |
7222 | { | |
7223 | m = gfc_match_symbol (&sym, 0); | |
7224 | switch (m) | |
7225 | { | |
7226 | case MATCH_YES: | |
524af0d6 | 7227 | if (!gfc_add_protected (&sym->attr, sym->name, &gfc_current_locus)) |
ee7e677f TB |
7228 | return MATCH_ERROR; |
7229 | goto next_item; | |
7230 | ||
7231 | case MATCH_NO: | |
7232 | break; | |
7233 | ||
7234 | case MATCH_ERROR: | |
7235 | return MATCH_ERROR; | |
7236 | } | |
7237 | ||
7238 | next_item: | |
7239 | if (gfc_match_eos () == MATCH_YES) | |
7240 | break; | |
7241 | if (gfc_match_char (',') != MATCH_YES) | |
7242 | goto syntax; | |
7243 | } | |
7244 | ||
7245 | return MATCH_YES; | |
7246 | ||
7247 | syntax: | |
7248 | gfc_error ("Syntax error in PROTECTED statement at %C"); | |
7249 | return MATCH_ERROR; | |
7250 | } | |
7251 | ||
7252 | ||
86bf520d | 7253 | /* The PRIVATE statement is a bit weird in that it can be an attribute |
df2fba9e | 7254 | declaration, but also works as a standalone statement inside of a |
6de9cd9a DN |
7255 | type declaration or a module. */ |
7256 | ||
7257 | match | |
636dff67 | 7258 | gfc_match_private (gfc_statement *st) |
6de9cd9a DN |
7259 | { |
7260 | ||
7261 | if (gfc_match ("private") != MATCH_YES) | |
7262 | return MATCH_NO; | |
7263 | ||
d51347f9 | 7264 | if (gfc_current_state () != COMP_MODULE |
30b608eb DK |
7265 | && !(gfc_current_state () == COMP_DERIVED |
7266 | && gfc_state_stack->previous | |
7267 | && gfc_state_stack->previous->state == COMP_MODULE) | |
7268 | && !(gfc_current_state () == COMP_DERIVED_CONTAINS | |
7269 | && gfc_state_stack->previous && gfc_state_stack->previous->previous | |
7270 | && gfc_state_stack->previous->previous->state == COMP_MODULE)) | |
d51347f9 TB |
7271 | { |
7272 | gfc_error ("PRIVATE statement at %C is only allowed in the " | |
7273 | "specification part of a module"); | |
7274 | return MATCH_ERROR; | |
7275 | } | |
7276 | ||
6de9cd9a DN |
7277 | if (gfc_current_state () == COMP_DERIVED) |
7278 | { | |
7279 | if (gfc_match_eos () == MATCH_YES) | |
7280 | { | |
7281 | *st = ST_PRIVATE; | |
7282 | return MATCH_YES; | |
7283 | } | |
7284 | ||
7285 | gfc_syntax_error (ST_PRIVATE); | |
7286 | return MATCH_ERROR; | |
7287 | } | |
7288 | ||
7289 | if (gfc_match_eos () == MATCH_YES) | |
7290 | { | |
7291 | *st = ST_PRIVATE; | |
7292 | return MATCH_YES; | |
7293 | } | |
7294 | ||
7295 | *st = ST_ATTR_DECL; | |
7296 | return access_attr_decl (ST_PRIVATE); | |
7297 | } | |
7298 | ||
7299 | ||
7300 | match | |
636dff67 | 7301 | gfc_match_public (gfc_statement *st) |
6de9cd9a DN |
7302 | { |
7303 | ||
7304 | if (gfc_match ("public") != MATCH_YES) | |
7305 | return MATCH_NO; | |
7306 | ||
d51347f9 TB |
7307 | if (gfc_current_state () != COMP_MODULE) |
7308 | { | |
7309 | gfc_error ("PUBLIC statement at %C is only allowed in the " | |
7310 | "specification part of a module"); | |
7311 | return MATCH_ERROR; | |
7312 | } | |
7313 | ||
6de9cd9a DN |
7314 | if (gfc_match_eos () == MATCH_YES) |
7315 | { | |
7316 | *st = ST_PUBLIC; | |
7317 | return MATCH_YES; | |
7318 | } | |
7319 | ||
7320 | *st = ST_ATTR_DECL; | |
7321 | return access_attr_decl (ST_PUBLIC); | |
7322 | } | |
7323 | ||
7324 | ||
7325 | /* Workhorse for gfc_match_parameter. */ | |
7326 | ||
7327 | static match | |
7328 | do_parm (void) | |
7329 | { | |
7330 | gfc_symbol *sym; | |
7331 | gfc_expr *init; | |
7332 | match m; | |
524af0d6 | 7333 | bool t; |
6de9cd9a DN |
7334 | |
7335 | m = gfc_match_symbol (&sym, 0); | |
7336 | if (m == MATCH_NO) | |
7337 | gfc_error ("Expected variable name at %C in PARAMETER statement"); | |
7338 | ||
7339 | if (m != MATCH_YES) | |
7340 | return m; | |
7341 | ||
7342 | if (gfc_match_char ('=') == MATCH_NO) | |
7343 | { | |
7344 | gfc_error ("Expected = sign in PARAMETER statement at %C"); | |
7345 | return MATCH_ERROR; | |
7346 | } | |
7347 | ||
7348 | m = gfc_match_init_expr (&init); | |
7349 | if (m == MATCH_NO) | |
7350 | gfc_error ("Expected expression at %C in PARAMETER statement"); | |
7351 | if (m != MATCH_YES) | |
7352 | return m; | |
7353 | ||
7354 | if (sym->ts.type == BT_UNKNOWN | |
524af0d6 | 7355 | && !gfc_set_default_type (sym, 1, NULL)) |
6de9cd9a DN |
7356 | { |
7357 | m = MATCH_ERROR; | |
7358 | goto cleanup; | |
7359 | } | |
7360 | ||
524af0d6 JB |
7361 | if (!gfc_check_assign_symbol (sym, NULL, init) |
7362 | || !gfc_add_flavor (&sym->attr, FL_PARAMETER, sym->name, NULL)) | |
6de9cd9a DN |
7363 | { |
7364 | m = MATCH_ERROR; | |
7365 | goto cleanup; | |
7366 | } | |
7367 | ||
1283ab12 TB |
7368 | if (sym->value) |
7369 | { | |
7370 | gfc_error ("Initializing already initialized variable at %C"); | |
7371 | m = MATCH_ERROR; | |
7372 | goto cleanup; | |
7373 | } | |
7374 | ||
7919373d | 7375 | t = add_init_expr_to_sym (sym->name, &init, &gfc_current_locus); |
524af0d6 | 7376 | return (t) ? MATCH_YES : MATCH_ERROR; |
6de9cd9a DN |
7377 | |
7378 | cleanup: | |
7379 | gfc_free_expr (init); | |
7380 | return m; | |
7381 | } | |
7382 | ||
7383 | ||
7384 | /* Match a parameter statement, with the weird syntax that these have. */ | |
7385 | ||
7386 | match | |
7387 | gfc_match_parameter (void) | |
7388 | { | |
7389 | match m; | |
7390 | ||
7391 | if (gfc_match_char ('(') == MATCH_NO) | |
7392 | return MATCH_NO; | |
7393 | ||
7394 | for (;;) | |
7395 | { | |
7396 | m = do_parm (); | |
7397 | if (m != MATCH_YES) | |
7398 | break; | |
7399 | ||
7400 | if (gfc_match (" )%t") == MATCH_YES) | |
7401 | break; | |
7402 | ||
7403 | if (gfc_match_char (',') != MATCH_YES) | |
7404 | { | |
7405 | gfc_error ("Unexpected characters in PARAMETER statement at %C"); | |
7406 | m = MATCH_ERROR; | |
7407 | break; | |
7408 | } | |
7409 | } | |
7410 | ||
7411 | return m; | |
7412 | } | |
7413 | ||
7414 | ||
7415 | /* Save statements have a special syntax. */ | |
7416 | ||
7417 | match | |
7418 | gfc_match_save (void) | |
7419 | { | |
9056bd70 TS |
7420 | char n[GFC_MAX_SYMBOL_LEN+1]; |
7421 | gfc_common_head *c; | |
6de9cd9a DN |
7422 | gfc_symbol *sym; |
7423 | match m; | |
7424 | ||
7425 | if (gfc_match_eos () == MATCH_YES) | |
7426 | { | |
7427 | if (gfc_current_ns->seen_save) | |
7428 | { | |
524af0d6 JB |
7429 | if (!gfc_notify_std (GFC_STD_LEGACY, "Blanket SAVE statement at %C " |
7430 | "follows previous SAVE statement")) | |
09e87839 | 7431 | return MATCH_ERROR; |
6de9cd9a DN |
7432 | } |
7433 | ||
7434 | gfc_current_ns->save_all = gfc_current_ns->seen_save = 1; | |
7435 | return MATCH_YES; | |
7436 | } | |
7437 | ||
7438 | if (gfc_current_ns->save_all) | |
7439 | { | |
524af0d6 JB |
7440 | if (!gfc_notify_std (GFC_STD_LEGACY, "SAVE statement at %C follows " |
7441 | "blanket SAVE statement")) | |
09e87839 | 7442 | return MATCH_ERROR; |
6de9cd9a DN |
7443 | } |
7444 | ||
7445 | gfc_match (" ::"); | |
7446 | ||
7447 | for (;;) | |
7448 | { | |
7449 | m = gfc_match_symbol (&sym, 0); | |
7450 | switch (m) | |
7451 | { | |
7452 | case MATCH_YES: | |
524af0d6 JB |
7453 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, |
7454 | &gfc_current_locus)) | |
6de9cd9a DN |
7455 | return MATCH_ERROR; |
7456 | goto next_item; | |
7457 | ||
7458 | case MATCH_NO: | |
7459 | break; | |
7460 | ||
7461 | case MATCH_ERROR: | |
7462 | return MATCH_ERROR; | |
7463 | } | |
7464 | ||
9056bd70 | 7465 | m = gfc_match (" / %n /", &n); |
6de9cd9a DN |
7466 | if (m == MATCH_ERROR) |
7467 | return MATCH_ERROR; | |
7468 | if (m == MATCH_NO) | |
7469 | goto syntax; | |
7470 | ||
53814b8f | 7471 | c = gfc_get_common (n, 0); |
9056bd70 TS |
7472 | c->saved = 1; |
7473 | ||
6de9cd9a DN |
7474 | gfc_current_ns->seen_save = 1; |
7475 | ||
7476 | next_item: | |
7477 | if (gfc_match_eos () == MATCH_YES) | |
7478 | break; | |
7479 | if (gfc_match_char (',') != MATCH_YES) | |
7480 | goto syntax; | |
7481 | } | |
7482 | ||
7483 | return MATCH_YES; | |
7484 | ||
7485 | syntax: | |
7486 | gfc_error ("Syntax error in SAVE statement at %C"); | |
7487 | return MATCH_ERROR; | |
7488 | } | |
7489 | ||
7490 | ||
06469efd PT |
7491 | match |
7492 | gfc_match_value (void) | |
7493 | { | |
7494 | gfc_symbol *sym; | |
7495 | match m; | |
7496 | ||
9abe5e56 DK |
7497 | /* This is not allowed within a BLOCK construct! */ |
7498 | if (gfc_current_state () == COMP_BLOCK) | |
7499 | { | |
7500 | gfc_error ("VALUE is not allowed inside of BLOCK at %C"); | |
7501 | return MATCH_ERROR; | |
7502 | } | |
7503 | ||
524af0d6 | 7504 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE statement at %C")) |
06469efd PT |
7505 | return MATCH_ERROR; |
7506 | ||
7507 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7508 | { | |
7509 | return MATCH_ERROR; | |
7510 | } | |
7511 | ||
7512 | if (gfc_match_eos () == MATCH_YES) | |
7513 | goto syntax; | |
7514 | ||
7515 | for(;;) | |
7516 | { | |
7517 | m = gfc_match_symbol (&sym, 0); | |
7518 | switch (m) | |
7519 | { | |
7520 | case MATCH_YES: | |
524af0d6 | 7521 | if (!gfc_add_value (&sym->attr, sym->name, &gfc_current_locus)) |
06469efd PT |
7522 | return MATCH_ERROR; |
7523 | goto next_item; | |
7524 | ||
7525 | case MATCH_NO: | |
7526 | break; | |
7527 | ||
7528 | case MATCH_ERROR: | |
7529 | return MATCH_ERROR; | |
7530 | } | |
7531 | ||
7532 | next_item: | |
7533 | if (gfc_match_eos () == MATCH_YES) | |
7534 | break; | |
7535 | if (gfc_match_char (',') != MATCH_YES) | |
7536 | goto syntax; | |
7537 | } | |
7538 | ||
7539 | return MATCH_YES; | |
7540 | ||
7541 | syntax: | |
7542 | gfc_error ("Syntax error in VALUE statement at %C"); | |
7543 | return MATCH_ERROR; | |
7544 | } | |
7545 | ||
66e4ab31 | 7546 | |
775e6c3a TB |
7547 | match |
7548 | gfc_match_volatile (void) | |
7549 | { | |
7550 | gfc_symbol *sym; | |
7551 | match m; | |
7552 | ||
524af0d6 | 7553 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE statement at %C")) |
775e6c3a TB |
7554 | return MATCH_ERROR; |
7555 | ||
7556 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7557 | { | |
7558 | return MATCH_ERROR; | |
7559 | } | |
7560 | ||
7561 | if (gfc_match_eos () == MATCH_YES) | |
7562 | goto syntax; | |
7563 | ||
7564 | for(;;) | |
7565 | { | |
f5acf0f2 | 7566 | /* VOLATILE is special because it can be added to host-associated |
1cc0e193 | 7567 | symbols locally. Except for coarrays. */ |
9bce3c1c | 7568 | m = gfc_match_symbol (&sym, 1); |
775e6c3a TB |
7569 | switch (m) |
7570 | { | |
7571 | case MATCH_YES: | |
be59db2d TB |
7572 | /* F2008, C560+C561. VOLATILE for host-/use-associated variable or |
7573 | for variable in a BLOCK which is defined outside of the BLOCK. */ | |
7574 | if (sym->ns != gfc_current_ns && sym->attr.codimension) | |
7575 | { | |
c4100eae | 7576 | gfc_error ("Specifying VOLATILE for coarray variable %qs at " |
be59db2d TB |
7577 | "%C, which is use-/host-associated", sym->name); |
7578 | return MATCH_ERROR; | |
7579 | } | |
524af0d6 | 7580 | if (!gfc_add_volatile (&sym->attr, sym->name, &gfc_current_locus)) |
775e6c3a TB |
7581 | return MATCH_ERROR; |
7582 | goto next_item; | |
7583 | ||
7584 | case MATCH_NO: | |
7585 | break; | |
7586 | ||
7587 | case MATCH_ERROR: | |
7588 | return MATCH_ERROR; | |
7589 | } | |
7590 | ||
7591 | next_item: | |
7592 | if (gfc_match_eos () == MATCH_YES) | |
7593 | break; | |
7594 | if (gfc_match_char (',') != MATCH_YES) | |
7595 | goto syntax; | |
7596 | } | |
7597 | ||
7598 | return MATCH_YES; | |
7599 | ||
7600 | syntax: | |
7601 | gfc_error ("Syntax error in VOLATILE statement at %C"); | |
7602 | return MATCH_ERROR; | |
7603 | } | |
7604 | ||
7605 | ||
1eee5628 TB |
7606 | match |
7607 | gfc_match_asynchronous (void) | |
7608 | { | |
7609 | gfc_symbol *sym; | |
7610 | match m; | |
7611 | ||
524af0d6 | 7612 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS statement at %C")) |
1eee5628 TB |
7613 | return MATCH_ERROR; |
7614 | ||
7615 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7616 | { | |
7617 | return MATCH_ERROR; | |
7618 | } | |
7619 | ||
7620 | if (gfc_match_eos () == MATCH_YES) | |
7621 | goto syntax; | |
7622 | ||
7623 | for(;;) | |
7624 | { | |
f5acf0f2 | 7625 | /* ASYNCHRONOUS is special because it can be added to host-associated |
1eee5628 TB |
7626 | symbols locally. */ |
7627 | m = gfc_match_symbol (&sym, 1); | |
7628 | switch (m) | |
7629 | { | |
7630 | case MATCH_YES: | |
524af0d6 | 7631 | if (!gfc_add_asynchronous (&sym->attr, sym->name, &gfc_current_locus)) |
1eee5628 TB |
7632 | return MATCH_ERROR; |
7633 | goto next_item; | |
7634 | ||
7635 | case MATCH_NO: | |
7636 | break; | |
7637 | ||
7638 | case MATCH_ERROR: | |
7639 | return MATCH_ERROR; | |
7640 | } | |
7641 | ||
7642 | next_item: | |
7643 | if (gfc_match_eos () == MATCH_YES) | |
7644 | break; | |
7645 | if (gfc_match_char (',') != MATCH_YES) | |
7646 | goto syntax; | |
7647 | } | |
7648 | ||
7649 | return MATCH_YES; | |
7650 | ||
7651 | syntax: | |
7652 | gfc_error ("Syntax error in ASYNCHRONOUS statement at %C"); | |
7653 | return MATCH_ERROR; | |
7654 | } | |
7655 | ||
7656 | ||
4668d6f9 PT |
7657 | /* Match a module procedure statement in a submodule. */ |
7658 | ||
7659 | match | |
7660 | gfc_match_submod_proc (void) | |
7661 | { | |
7662 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7663 | gfc_symbol *sym, *fsym; | |
7664 | match m; | |
7665 | gfc_formal_arglist *formal, *head, *tail; | |
7666 | ||
7667 | if (gfc_current_state () != COMP_CONTAINS | |
7668 | || !(gfc_state_stack->previous | |
7669 | && gfc_state_stack->previous->state == COMP_SUBMODULE)) | |
7670 | return MATCH_NO; | |
7671 | ||
7672 | m = gfc_match (" module% procedure% %n", name); | |
7673 | if (m != MATCH_YES) | |
7674 | return m; | |
7675 | ||
7676 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE PROCEDURE declaration " | |
7677 | "at %C")) | |
7678 | return MATCH_ERROR; | |
7679 | ||
7680 | if (get_proc_name (name, &sym, false)) | |
7681 | return MATCH_ERROR; | |
7682 | ||
7683 | /* Make sure that the result field is appropriately filled, even though | |
7684 | the result symbol will be replaced later on. */ | |
cded7919 | 7685 | if (sym->ts.interface && sym->ts.interface->attr.function) |
4668d6f9 PT |
7686 | { |
7687 | if (sym->ts.interface->result | |
7688 | && sym->ts.interface->result != sym->ts.interface) | |
7689 | sym->result= sym->ts.interface->result; | |
7690 | else | |
7691 | sym->result = sym; | |
7692 | } | |
7693 | ||
7694 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if | |
7695 | the symbol existed before. */ | |
7696 | sym->declared_at = gfc_current_locus; | |
7697 | ||
7698 | if (!sym->attr.module_procedure) | |
7699 | return MATCH_ERROR; | |
7700 | ||
7701 | /* Signal match_end to expect "end procedure". */ | |
7702 | sym->abr_modproc_decl = 1; | |
7703 | ||
7704 | /* Change from IFSRC_IFBODY coming from the interface declaration. */ | |
7705 | sym->attr.if_source = IFSRC_DECL; | |
7706 | ||
7707 | gfc_new_block = sym; | |
7708 | ||
7709 | /* Make a new formal arglist with the symbols in the procedure | |
7710 | namespace. */ | |
7711 | head = tail = NULL; | |
7712 | for (formal = sym->formal; formal && formal->sym; formal = formal->next) | |
7713 | { | |
7714 | if (formal == sym->formal) | |
7715 | head = tail = gfc_get_formal_arglist (); | |
7716 | else | |
7717 | { | |
7718 | tail->next = gfc_get_formal_arglist (); | |
7719 | tail = tail->next; | |
7720 | } | |
7721 | ||
7722 | if (gfc_copy_dummy_sym (&fsym, formal->sym, 0)) | |
7723 | goto cleanup; | |
7724 | ||
7725 | tail->sym = fsym; | |
7726 | gfc_set_sym_referenced (fsym); | |
7727 | } | |
7728 | ||
7729 | /* The dummy symbols get cleaned up, when the formal_namespace of the | |
7730 | interface declaration is cleared. This allows us to add the | |
7731 | explicit interface as is done for other type of procedure. */ | |
7732 | if (!gfc_add_explicit_interface (sym, IFSRC_DECL, head, | |
7733 | &gfc_current_locus)) | |
7734 | return MATCH_ERROR; | |
7735 | ||
7736 | if (gfc_match_eos () != MATCH_YES) | |
7737 | { | |
7738 | gfc_syntax_error (ST_MODULE_PROC); | |
7739 | return MATCH_ERROR; | |
7740 | } | |
7741 | ||
7742 | return MATCH_YES; | |
7743 | ||
7744 | cleanup: | |
7745 | gfc_free_formal_arglist (head); | |
7746 | return MATCH_ERROR; | |
7747 | } | |
7748 | ||
7749 | ||
6de9cd9a DN |
7750 | /* Match a module procedure statement. Note that we have to modify |
7751 | symbols in the parent's namespace because the current one was there | |
49de9e73 | 7752 | to receive symbols that are in an interface's formal argument list. */ |
6de9cd9a DN |
7753 | |
7754 | match | |
7755 | gfc_match_modproc (void) | |
7756 | { | |
7757 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7758 | gfc_symbol *sym; | |
7759 | match m; | |
162b5a21 | 7760 | locus old_locus; |
060fca4a | 7761 | gfc_namespace *module_ns; |
2b77e908 | 7762 | gfc_interface *old_interface_head, *interface; |
6de9cd9a DN |
7763 | |
7764 | if (gfc_state_stack->state != COMP_INTERFACE | |
7765 | || gfc_state_stack->previous == NULL | |
129d15a3 JW |
7766 | || current_interface.type == INTERFACE_NAMELESS |
7767 | || current_interface.type == INTERFACE_ABSTRACT) | |
6de9cd9a | 7768 | { |
636dff67 SK |
7769 | gfc_error ("MODULE PROCEDURE at %C must be in a generic module " |
7770 | "interface"); | |
6de9cd9a DN |
7771 | return MATCH_ERROR; |
7772 | } | |
7773 | ||
060fca4a PT |
7774 | module_ns = gfc_current_ns->parent; |
7775 | for (; module_ns; module_ns = module_ns->parent) | |
43dfd40c SK |
7776 | if (module_ns->proc_name->attr.flavor == FL_MODULE |
7777 | || module_ns->proc_name->attr.flavor == FL_PROGRAM | |
7778 | || (module_ns->proc_name->attr.flavor == FL_PROCEDURE | |
7779 | && !module_ns->proc_name->attr.contained)) | |
060fca4a PT |
7780 | break; |
7781 | ||
7782 | if (module_ns == NULL) | |
7783 | return MATCH_ERROR; | |
7784 | ||
2b77e908 FXC |
7785 | /* Store the current state of the interface. We will need it if we |
7786 | end up with a syntax error and need to recover. */ | |
7787 | old_interface_head = gfc_current_interface_head (); | |
7788 | ||
162b5a21 SK |
7789 | /* Check if the F2008 optional double colon appears. */ |
7790 | gfc_gobble_whitespace (); | |
7791 | old_locus = gfc_current_locus; | |
7792 | if (gfc_match ("::") == MATCH_YES) | |
7793 | { | |
524af0d6 JB |
7794 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
7795 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
162b5a21 SK |
7796 | return MATCH_ERROR; |
7797 | } | |
7798 | else | |
7799 | gfc_current_locus = old_locus; | |
f5acf0f2 | 7800 | |
6de9cd9a DN |
7801 | for (;;) |
7802 | { | |
2b77e908 | 7803 | bool last = false; |
162b5a21 | 7804 | old_locus = gfc_current_locus; |
2b77e908 | 7805 | |
6de9cd9a DN |
7806 | m = gfc_match_name (name); |
7807 | if (m == MATCH_NO) | |
7808 | goto syntax; | |
7809 | if (m != MATCH_YES) | |
7810 | return MATCH_ERROR; | |
7811 | ||
2b77e908 FXC |
7812 | /* Check for syntax error before starting to add symbols to the |
7813 | current namespace. */ | |
7814 | if (gfc_match_eos () == MATCH_YES) | |
7815 | last = true; | |
162b5a21 | 7816 | |
2b77e908 FXC |
7817 | if (!last && gfc_match_char (',') != MATCH_YES) |
7818 | goto syntax; | |
7819 | ||
7820 | /* Now we're sure the syntax is valid, we process this item | |
7821 | further. */ | |
060fca4a | 7822 | if (gfc_get_symbol (name, module_ns, &sym)) |
6de9cd9a DN |
7823 | return MATCH_ERROR; |
7824 | ||
43dfd40c SK |
7825 | if (sym->attr.intrinsic) |
7826 | { | |
7827 | gfc_error ("Intrinsic procedure at %L cannot be a MODULE " | |
7828 | "PROCEDURE", &old_locus); | |
7829 | return MATCH_ERROR; | |
7830 | } | |
7831 | ||
6de9cd9a | 7832 | if (sym->attr.proc != PROC_MODULE |
524af0d6 | 7833 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
6de9cd9a DN |
7834 | return MATCH_ERROR; |
7835 | ||
524af0d6 | 7836 | if (!gfc_add_interface (sym)) |
6de9cd9a DN |
7837 | return MATCH_ERROR; |
7838 | ||
71f77fd7 | 7839 | sym->attr.mod_proc = 1; |
43dfd40c | 7840 | sym->declared_at = old_locus; |
71f77fd7 | 7841 | |
2b77e908 | 7842 | if (last) |
6de9cd9a | 7843 | break; |
6de9cd9a DN |
7844 | } |
7845 | ||
7846 | return MATCH_YES; | |
7847 | ||
7848 | syntax: | |
2b77e908 FXC |
7849 | /* Restore the previous state of the interface. */ |
7850 | interface = gfc_current_interface_head (); | |
7851 | gfc_set_current_interface_head (old_interface_head); | |
7852 | ||
7853 | /* Free the new interfaces. */ | |
7854 | while (interface != old_interface_head) | |
7855 | { | |
7856 | gfc_interface *i = interface->next; | |
cede9502 | 7857 | free (interface); |
2b77e908 FXC |
7858 | interface = i; |
7859 | } | |
7860 | ||
7861 | /* And issue a syntax error. */ | |
6de9cd9a DN |
7862 | gfc_syntax_error (ST_MODULE_PROC); |
7863 | return MATCH_ERROR; | |
7864 | } | |
7865 | ||
7866 | ||
7d1f1e61 | 7867 | /* Check a derived type that is being extended. */ |
42e3d759 | 7868 | |
7d1f1e61 PT |
7869 | static gfc_symbol* |
7870 | check_extended_derived_type (char *name) | |
7871 | { | |
7872 | gfc_symbol *extended; | |
7873 | ||
7874 | if (gfc_find_symbol (name, gfc_current_ns, 1, &extended)) | |
7875 | { | |
7876 | gfc_error ("Ambiguous symbol in TYPE definition at %C"); | |
7877 | return NULL; | |
7878 | } | |
7879 | ||
42e3d759 JW |
7880 | extended = gfc_find_dt_in_generic (extended); |
7881 | ||
7882 | /* F08:C428. */ | |
7d1f1e61 PT |
7883 | if (!extended) |
7884 | { | |
c4100eae | 7885 | gfc_error ("Symbol %qs at %C has not been previously defined", name); |
7d1f1e61 PT |
7886 | return NULL; |
7887 | } | |
7888 | ||
7889 | if (extended->attr.flavor != FL_DERIVED) | |
7890 | { | |
c4100eae | 7891 | gfc_error ("%qs in EXTENDS expression at %C is not a " |
7d1f1e61 PT |
7892 | "derived type", name); |
7893 | return NULL; | |
7894 | } | |
7895 | ||
7896 | if (extended->attr.is_bind_c) | |
7897 | { | |
c4100eae | 7898 | gfc_error ("%qs cannot be extended at %C because it " |
7d1f1e61 PT |
7899 | "is BIND(C)", extended->name); |
7900 | return NULL; | |
7901 | } | |
7902 | ||
7903 | if (extended->attr.sequence) | |
7904 | { | |
c4100eae | 7905 | gfc_error ("%qs cannot be extended at %C because it " |
7d1f1e61 PT |
7906 | "is a SEQUENCE type", extended->name); |
7907 | return NULL; | |
7908 | } | |
7909 | ||
7910 | return extended; | |
7911 | } | |
7912 | ||
7913 | ||
a8b3b0b6 CR |
7914 | /* Match the optional attribute specifiers for a type declaration. |
7915 | Return MATCH_ERROR if an error is encountered in one of the handled | |
7916 | attributes (public, private, bind(c)), MATCH_NO if what's found is | |
7917 | not a handled attribute, and MATCH_YES otherwise. TODO: More error | |
7918 | checking on attribute conflicts needs to be done. */ | |
6de9cd9a DN |
7919 | |
7920 | match | |
7d1f1e61 | 7921 | gfc_get_type_attr_spec (symbol_attribute *attr, char *name) |
6de9cd9a | 7922 | { |
a8b3b0b6 | 7923 | /* See if the derived type is marked as private. */ |
6de9cd9a DN |
7924 | if (gfc_match (" , private") == MATCH_YES) |
7925 | { | |
d51347f9 | 7926 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 7927 | { |
d51347f9 TB |
7928 | gfc_error ("Derived type at %C can only be PRIVATE in the " |
7929 | "specification part of a module"); | |
6de9cd9a DN |
7930 | return MATCH_ERROR; |
7931 | } | |
7932 | ||
524af0d6 | 7933 | if (!gfc_add_access (attr, ACCESS_PRIVATE, NULL, NULL)) |
6de9cd9a | 7934 | return MATCH_ERROR; |
6de9cd9a | 7935 | } |
a8b3b0b6 | 7936 | else if (gfc_match (" , public") == MATCH_YES) |
6de9cd9a | 7937 | { |
d51347f9 | 7938 | if (gfc_current_state () != COMP_MODULE) |
6de9cd9a | 7939 | { |
d51347f9 TB |
7940 | gfc_error ("Derived type at %C can only be PUBLIC in the " |
7941 | "specification part of a module"); | |
6de9cd9a DN |
7942 | return MATCH_ERROR; |
7943 | } | |
7944 | ||
524af0d6 | 7945 | if (!gfc_add_access (attr, ACCESS_PUBLIC, NULL, NULL)) |
6de9cd9a | 7946 | return MATCH_ERROR; |
6de9cd9a | 7947 | } |
52f49934 | 7948 | else if (gfc_match (" , bind ( c )") == MATCH_YES) |
a8b3b0b6 CR |
7949 | { |
7950 | /* If the type is defined to be bind(c) it then needs to make | |
7951 | sure that all fields are interoperable. This will | |
7952 | need to be a semantic check on the finished derived type. | |
7953 | See 15.2.3 (lines 9-12) of F2003 draft. */ | |
524af0d6 | 7954 | if (!gfc_add_is_bind_c (attr, NULL, &gfc_current_locus, 0)) |
a8b3b0b6 CR |
7955 | return MATCH_ERROR; |
7956 | ||
7957 | /* TODO: attr conflicts need to be checked, probably in symbol.c. */ | |
7958 | } | |
52f49934 DK |
7959 | else if (gfc_match (" , abstract") == MATCH_YES) |
7960 | { | |
524af0d6 | 7961 | if (!gfc_notify_std (GFC_STD_F2003, "ABSTRACT type at %C")) |
52f49934 DK |
7962 | return MATCH_ERROR; |
7963 | ||
524af0d6 | 7964 | if (!gfc_add_abstract (attr, &gfc_current_locus)) |
52f49934 DK |
7965 | return MATCH_ERROR; |
7966 | } | |
524af0d6 | 7967 | else if (name && gfc_match (" , extends ( %n )", name) == MATCH_YES) |
7d1f1e61 | 7968 | { |
524af0d6 | 7969 | if (!gfc_add_extension (attr, &gfc_current_locus)) |
7d1f1e61 PT |
7970 | return MATCH_ERROR; |
7971 | } | |
a8b3b0b6 CR |
7972 | else |
7973 | return MATCH_NO; | |
7974 | ||
7975 | /* If we get here, something matched. */ | |
7976 | return MATCH_YES; | |
7977 | } | |
7978 | ||
7979 | ||
7980 | /* Match the beginning of a derived type declaration. If a type name | |
7981 | was the result of a function, then it is possible to have a symbol | |
7982 | already to be known as a derived type yet have no components. */ | |
7983 | ||
7984 | match | |
7985 | gfc_match_derived_decl (void) | |
7986 | { | |
7987 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7d1f1e61 | 7988 | char parent[GFC_MAX_SYMBOL_LEN + 1]; |
a8b3b0b6 | 7989 | symbol_attribute attr; |
c3f34952 | 7990 | gfc_symbol *sym, *gensym; |
7d1f1e61 | 7991 | gfc_symbol *extended; |
a8b3b0b6 CR |
7992 | match m; |
7993 | match is_type_attr_spec = MATCH_NO; | |
e7303e85 | 7994 | bool seen_attr = false; |
c3f34952 | 7995 | gfc_interface *intr = NULL, *head; |
a8b3b0b6 CR |
7996 | |
7997 | if (gfc_current_state () == COMP_DERIVED) | |
7998 | return MATCH_NO; | |
7999 | ||
7d1f1e61 PT |
8000 | name[0] = '\0'; |
8001 | parent[0] = '\0'; | |
a8b3b0b6 | 8002 | gfc_clear_attr (&attr); |
7d1f1e61 | 8003 | extended = NULL; |
a8b3b0b6 CR |
8004 | |
8005 | do | |
8006 | { | |
7d1f1e61 | 8007 | is_type_attr_spec = gfc_get_type_attr_spec (&attr, parent); |
a8b3b0b6 CR |
8008 | if (is_type_attr_spec == MATCH_ERROR) |
8009 | return MATCH_ERROR; | |
e7303e85 FXC |
8010 | if (is_type_attr_spec == MATCH_YES) |
8011 | seen_attr = true; | |
a8b3b0b6 | 8012 | } while (is_type_attr_spec == MATCH_YES); |
6de9cd9a | 8013 | |
63a3341a PT |
8014 | /* Deal with derived type extensions. The extension attribute has |
8015 | been added to 'attr' but now the parent type must be found and | |
8016 | checked. */ | |
7d1f1e61 PT |
8017 | if (parent[0]) |
8018 | extended = check_extended_derived_type (parent); | |
8019 | ||
8020 | if (parent[0] && !extended) | |
8021 | return MATCH_ERROR; | |
8022 | ||
e7303e85 | 8023 | if (gfc_match (" ::") != MATCH_YES && seen_attr) |
6de9cd9a DN |
8024 | { |
8025 | gfc_error ("Expected :: in TYPE definition at %C"); | |
8026 | return MATCH_ERROR; | |
8027 | } | |
8028 | ||
8029 | m = gfc_match (" %n%t", name); | |
8030 | if (m != MATCH_YES) | |
8031 | return m; | |
8032 | ||
e9c06563 TB |
8033 | /* Make sure the name is not the name of an intrinsic type. */ |
8034 | if (gfc_is_intrinsic_typename (name)) | |
6de9cd9a | 8035 | { |
c4100eae | 8036 | gfc_error ("Type name %qs at %C cannot be the same as an intrinsic " |
636dff67 | 8037 | "type", name); |
6de9cd9a DN |
8038 | return MATCH_ERROR; |
8039 | } | |
8040 | ||
c3f34952 | 8041 | if (gfc_get_symbol (name, NULL, &gensym)) |
6de9cd9a DN |
8042 | return MATCH_ERROR; |
8043 | ||
c3f34952 | 8044 | if (!gensym->attr.generic && gensym->ts.type != BT_UNKNOWN) |
6de9cd9a | 8045 | { |
c4100eae | 8046 | gfc_error ("Derived type name %qs at %C already has a basic type " |
c3f34952 TB |
8047 | "of %s", gensym->name, gfc_typename (&gensym->ts)); |
8048 | return MATCH_ERROR; | |
8049 | } | |
8050 | ||
8051 | if (!gensym->attr.generic | |
524af0d6 | 8052 | && !gfc_add_generic (&gensym->attr, gensym->name, NULL)) |
c3f34952 TB |
8053 | return MATCH_ERROR; |
8054 | ||
8055 | if (!gensym->attr.function | |
524af0d6 | 8056 | && !gfc_add_function (&gensym->attr, gensym->name, NULL)) |
c3f34952 TB |
8057 | return MATCH_ERROR; |
8058 | ||
8059 | sym = gfc_find_dt_in_generic (gensym); | |
8060 | ||
8061 | if (sym && (sym->components != NULL || sym->attr.zero_comp)) | |
8062 | { | |
c4100eae | 8063 | gfc_error ("Derived type definition of %qs at %C has already been " |
c3f34952 | 8064 | "defined", sym->name); |
6de9cd9a DN |
8065 | return MATCH_ERROR; |
8066 | } | |
8067 | ||
c3f34952 TB |
8068 | if (!sym) |
8069 | { | |
8070 | /* Use upper case to save the actual derived-type symbol. */ | |
8071 | gfc_get_symbol (gfc_get_string ("%c%s", | |
8072 | (char) TOUPPER ((unsigned char) gensym->name[0]), | |
8073 | &gensym->name[1]), NULL, &sym); | |
8074 | sym->name = gfc_get_string (gensym->name); | |
8075 | head = gensym->generic; | |
8076 | intr = gfc_get_interface (); | |
8077 | intr->sym = sym; | |
8078 | intr->where = gfc_current_locus; | |
8079 | intr->sym->declared_at = gfc_current_locus; | |
8080 | intr->next = head; | |
8081 | gensym->generic = intr; | |
8082 | gensym->attr.if_source = IFSRC_DECL; | |
8083 | } | |
8084 | ||
6de9cd9a DN |
8085 | /* The symbol may already have the derived attribute without the |
8086 | components. The ways this can happen is via a function | |
8087 | definition, an INTRINSIC statement or a subtype in another | |
8088 | derived type that is a pointer. The first part of the AND clause | |
df2fba9e | 8089 | is true if the symbol is not the return value of a function. */ |
6de9cd9a | 8090 | if (sym->attr.flavor != FL_DERIVED |
524af0d6 | 8091 | && !gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL)) |
6de9cd9a DN |
8092 | return MATCH_ERROR; |
8093 | ||
6de9cd9a | 8094 | if (attr.access != ACCESS_UNKNOWN |
524af0d6 | 8095 | && !gfc_add_access (&sym->attr, attr.access, sym->name, NULL)) |
6de9cd9a | 8096 | return MATCH_ERROR; |
c3f34952 TB |
8097 | else if (sym->attr.access == ACCESS_UNKNOWN |
8098 | && gensym->attr.access != ACCESS_UNKNOWN | |
524af0d6 JB |
8099 | && !gfc_add_access (&sym->attr, gensym->attr.access, |
8100 | sym->name, NULL)) | |
c3f34952 TB |
8101 | return MATCH_ERROR; |
8102 | ||
8103 | if (sym->attr.access != ACCESS_UNKNOWN | |
8104 | && gensym->attr.access == ACCESS_UNKNOWN) | |
8105 | gensym->attr.access = sym->attr.access; | |
6de9cd9a | 8106 | |
a8b3b0b6 CR |
8107 | /* See if the derived type was labeled as bind(c). */ |
8108 | if (attr.is_bind_c != 0) | |
8109 | sym->attr.is_bind_c = attr.is_bind_c; | |
8110 | ||
34523524 DK |
8111 | /* Construct the f2k_derived namespace if it is not yet there. */ |
8112 | if (!sym->f2k_derived) | |
8113 | sym->f2k_derived = gfc_get_namespace (NULL, 0); | |
f5acf0f2 | 8114 | |
7d1f1e61 PT |
8115 | if (extended && !sym->components) |
8116 | { | |
8117 | gfc_component *p; | |
7d1f1e61 PT |
8118 | |
8119 | /* Add the extended derived type as the first component. */ | |
8120 | gfc_add_component (sym, parent, &p); | |
7d1f1e61 PT |
8121 | extended->refs++; |
8122 | gfc_set_sym_referenced (extended); | |
8123 | ||
8124 | p->ts.type = BT_DERIVED; | |
bc21d315 | 8125 | p->ts.u.derived = extended; |
7d1f1e61 | 8126 | p->initializer = gfc_default_initializer (&p->ts); |
f5acf0f2 | 8127 | |
7c1dab0d JW |
8128 | /* Set extension level. */ |
8129 | if (extended->attr.extension == 255) | |
8130 | { | |
8131 | /* Since the extension field is 8 bit wide, we can only have | |
8132 | up to 255 extension levels. */ | |
c4100eae | 8133 | gfc_error ("Maximum extension level reached with type %qs at %L", |
7c1dab0d JW |
8134 | extended->name, &extended->declared_at); |
8135 | return MATCH_ERROR; | |
8136 | } | |
8137 | sym->attr.extension = extended->attr.extension + 1; | |
7d1f1e61 PT |
8138 | |
8139 | /* Provide the links between the extended type and its extension. */ | |
8140 | if (!extended->f2k_derived) | |
8141 | extended->f2k_derived = gfc_get_namespace (NULL, 0); | |
7d1f1e61 PT |
8142 | } |
8143 | ||
7c1dab0d JW |
8144 | if (!sym->hash_value) |
8145 | /* Set the hash for the compound name for this type. */ | |
4fa02692 | 8146 | sym->hash_value = gfc_hash_value (sym); |
cf2b3c22 | 8147 | |
52f49934 DK |
8148 | /* Take over the ABSTRACT attribute. */ |
8149 | sym->attr.abstract = attr.abstract; | |
8150 | ||
6de9cd9a DN |
8151 | gfc_new_block = sym; |
8152 | ||
8153 | return MATCH_YES; | |
8154 | } | |
83d890b9 AL |
8155 | |
8156 | ||
f5acf0f2 | 8157 | /* Cray Pointees can be declared as: |
b3aefde2 | 8158 | pointer (ipt, a (n,m,...,*)) */ |
83d890b9 | 8159 | |
32e8bb8e | 8160 | match |
83d890b9 AL |
8161 | gfc_mod_pointee_as (gfc_array_spec *as) |
8162 | { | |
8163 | as->cray_pointee = true; /* This will be useful to know later. */ | |
8164 | if (as->type == AS_ASSUMED_SIZE) | |
b3aefde2 | 8165 | as->cp_was_assumed = true; |
83d890b9 AL |
8166 | else if (as->type == AS_ASSUMED_SHAPE) |
8167 | { | |
8168 | gfc_error ("Cray Pointee at %C cannot be assumed shape array"); | |
8169 | return MATCH_ERROR; | |
8170 | } | |
8171 | return MATCH_YES; | |
8172 | } | |
25d8f0a2 TS |
8173 | |
8174 | ||
f5acf0f2 PT |
8175 | /* Match the enum definition statement, here we are trying to match |
8176 | the first line of enum definition statement. | |
25d8f0a2 TS |
8177 | Returns MATCH_YES if match is found. */ |
8178 | ||
8179 | match | |
8180 | gfc_match_enum (void) | |
8181 | { | |
8182 | match m; | |
f5acf0f2 | 8183 | |
25d8f0a2 TS |
8184 | m = gfc_match_eos (); |
8185 | if (m != MATCH_YES) | |
8186 | return m; | |
8187 | ||
524af0d6 | 8188 | if (!gfc_notify_std (GFC_STD_F2003, "ENUM and ENUMERATOR at %C")) |
25d8f0a2 TS |
8189 | return MATCH_ERROR; |
8190 | ||
8191 | return MATCH_YES; | |
8192 | } | |
8193 | ||
8194 | ||
31224396 SK |
8195 | /* Returns an initializer whose value is one higher than the value of the |
8196 | LAST_INITIALIZER argument. If the argument is NULL, the | |
8197 | initializers value will be set to zero. The initializer's kind | |
8198 | will be set to gfc_c_int_kind. | |
8199 | ||
8200 | If -fshort-enums is given, the appropriate kind will be selected | |
8201 | later after all enumerators have been parsed. A warning is issued | |
8202 | here if an initializer exceeds gfc_c_int_kind. */ | |
8203 | ||
8204 | static gfc_expr * | |
8205 | enum_initializer (gfc_expr *last_initializer, locus where) | |
8206 | { | |
8207 | gfc_expr *result; | |
b7e75771 | 8208 | result = gfc_get_constant_expr (BT_INTEGER, gfc_c_int_kind, &where); |
31224396 SK |
8209 | |
8210 | mpz_init (result->value.integer); | |
8211 | ||
8212 | if (last_initializer != NULL) | |
8213 | { | |
8214 | mpz_add_ui (result->value.integer, last_initializer->value.integer, 1); | |
8215 | result->where = last_initializer->where; | |
8216 | ||
8217 | if (gfc_check_integer_range (result->value.integer, | |
8218 | gfc_c_int_kind) != ARITH_OK) | |
8219 | { | |
8220 | gfc_error ("Enumerator exceeds the C integer type at %C"); | |
8221 | return NULL; | |
8222 | } | |
8223 | } | |
8224 | else | |
8225 | { | |
8226 | /* Control comes here, if it's the very first enumerator and no | |
8227 | initializer has been given. It will be initialized to zero. */ | |
8228 | mpz_set_si (result->value.integer, 0); | |
8229 | } | |
8230 | ||
8231 | return result; | |
8232 | } | |
8233 | ||
8234 | ||
6133c68a TS |
8235 | /* Match a variable name with an optional initializer. When this |
8236 | subroutine is called, a variable is expected to be parsed next. | |
8237 | Depending on what is happening at the moment, updates either the | |
8238 | symbol table or the current interface. */ | |
8239 | ||
8240 | static match | |
8241 | enumerator_decl (void) | |
8242 | { | |
8243 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8244 | gfc_expr *initializer; | |
8245 | gfc_array_spec *as = NULL; | |
8246 | gfc_symbol *sym; | |
8247 | locus var_locus; | |
8248 | match m; | |
524af0d6 | 8249 | bool t; |
6133c68a TS |
8250 | locus old_locus; |
8251 | ||
8252 | initializer = NULL; | |
8253 | old_locus = gfc_current_locus; | |
8254 | ||
8255 | /* When we get here, we've just matched a list of attributes and | |
8256 | maybe a type and a double colon. The next thing we expect to see | |
8257 | is the name of the symbol. */ | |
8258 | m = gfc_match_name (name); | |
8259 | if (m != MATCH_YES) | |
8260 | goto cleanup; | |
8261 | ||
8262 | var_locus = gfc_current_locus; | |
8263 | ||
8264 | /* OK, we've successfully matched the declaration. Now put the | |
8265 | symbol in the current namespace. If we fail to create the symbol, | |
8266 | bail out. */ | |
524af0d6 | 8267 | if (!build_sym (name, NULL, false, &as, &var_locus)) |
6133c68a TS |
8268 | { |
8269 | m = MATCH_ERROR; | |
8270 | goto cleanup; | |
8271 | } | |
8272 | ||
8273 | /* The double colon must be present in order to have initializers. | |
8274 | Otherwise the statement is ambiguous with an assignment statement. */ | |
8275 | if (colon_seen) | |
8276 | { | |
8277 | if (gfc_match_char ('=') == MATCH_YES) | |
8278 | { | |
8279 | m = gfc_match_init_expr (&initializer); | |
8280 | if (m == MATCH_NO) | |
8281 | { | |
8282 | gfc_error ("Expected an initialization expression at %C"); | |
8283 | m = MATCH_ERROR; | |
8284 | } | |
8285 | ||
8286 | if (m != MATCH_YES) | |
8287 | goto cleanup; | |
8288 | } | |
8289 | } | |
8290 | ||
8291 | /* If we do not have an initializer, the initialization value of the | |
8292 | previous enumerator (stored in last_initializer) is incremented | |
8293 | by 1 and is used to initialize the current enumerator. */ | |
8294 | if (initializer == NULL) | |
31224396 | 8295 | initializer = enum_initializer (last_initializer, old_locus); |
d51347f9 | 8296 | |
6133c68a TS |
8297 | if (initializer == NULL || initializer->ts.type != BT_INTEGER) |
8298 | { | |
01e64c3d JJ |
8299 | gfc_error ("ENUMERATOR %L not initialized with integer expression", |
8300 | &var_locus); | |
d51347f9 | 8301 | m = MATCH_ERROR; |
6133c68a TS |
8302 | goto cleanup; |
8303 | } | |
8304 | ||
8305 | /* Store this current initializer, for the next enumerator variable | |
8306 | to be parsed. add_init_expr_to_sym() zeros initializer, so we | |
8307 | use last_initializer below. */ | |
8308 | last_initializer = initializer; | |
8309 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
8310 | ||
8311 | /* Maintain enumerator history. */ | |
8312 | gfc_find_symbol (name, NULL, 0, &sym); | |
8313 | create_enum_history (sym, last_initializer); | |
8314 | ||
524af0d6 | 8315 | return (t) ? MATCH_YES : MATCH_ERROR; |
6133c68a TS |
8316 | |
8317 | cleanup: | |
8318 | /* Free stuff up and return. */ | |
8319 | gfc_free_expr (initializer); | |
8320 | ||
8321 | return m; | |
8322 | } | |
8323 | ||
8324 | ||
66e4ab31 | 8325 | /* Match the enumerator definition statement. */ |
25d8f0a2 TS |
8326 | |
8327 | match | |
8328 | gfc_match_enumerator_def (void) | |
8329 | { | |
8330 | match m; | |
524af0d6 | 8331 | bool t; |
d51347f9 | 8332 | |
25d8f0a2 | 8333 | gfc_clear_ts (¤t_ts); |
d51347f9 | 8334 | |
25d8f0a2 TS |
8335 | m = gfc_match (" enumerator"); |
8336 | if (m != MATCH_YES) | |
8337 | return m; | |
6133c68a TS |
8338 | |
8339 | m = gfc_match (" :: "); | |
8340 | if (m == MATCH_ERROR) | |
8341 | return m; | |
8342 | ||
8343 | colon_seen = (m == MATCH_YES); | |
d51347f9 | 8344 | |
25d8f0a2 TS |
8345 | if (gfc_current_state () != COMP_ENUM) |
8346 | { | |
8347 | gfc_error ("ENUM definition statement expected before %C"); | |
8348 | gfc_free_enum_history (); | |
8349 | return MATCH_ERROR; | |
8350 | } | |
8351 | ||
8352 | (¤t_ts)->type = BT_INTEGER; | |
8353 | (¤t_ts)->kind = gfc_c_int_kind; | |
d51347f9 | 8354 | |
6133c68a TS |
8355 | gfc_clear_attr (¤t_attr); |
8356 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, NULL); | |
524af0d6 | 8357 | if (!t) |
25d8f0a2 | 8358 | { |
6133c68a | 8359 | m = MATCH_ERROR; |
25d8f0a2 TS |
8360 | goto cleanup; |
8361 | } | |
8362 | ||
25d8f0a2 TS |
8363 | for (;;) |
8364 | { | |
6133c68a | 8365 | m = enumerator_decl (); |
25d8f0a2 | 8366 | if (m == MATCH_ERROR) |
01e64c3d JJ |
8367 | { |
8368 | gfc_free_enum_history (); | |
8369 | goto cleanup; | |
8370 | } | |
25d8f0a2 TS |
8371 | if (m == MATCH_NO) |
8372 | break; | |
8373 | ||
8374 | if (gfc_match_eos () == MATCH_YES) | |
8375 | goto cleanup; | |
8376 | if (gfc_match_char (',') != MATCH_YES) | |
8377 | break; | |
8378 | } | |
8379 | ||
8380 | if (gfc_current_state () == COMP_ENUM) | |
8381 | { | |
8382 | gfc_free_enum_history (); | |
8383 | gfc_error ("Syntax error in ENUMERATOR definition at %C"); | |
8384 | m = MATCH_ERROR; | |
8385 | } | |
8386 | ||
8387 | cleanup: | |
8388 | gfc_free_array_spec (current_as); | |
8389 | current_as = NULL; | |
8390 | return m; | |
8391 | ||
8392 | } | |
8393 | ||
f6fad28e | 8394 | |
30b608eb DK |
8395 | /* Match binding attributes. */ |
8396 | ||
8397 | static match | |
713485cc | 8398 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc) |
30b608eb DK |
8399 | { |
8400 | bool found_passing = false; | |
713485cc | 8401 | bool seen_ptr = false; |
90661f26 | 8402 | match m = MATCH_YES; |
30b608eb | 8403 | |
eea58adb | 8404 | /* Initialize to defaults. Do so even before the MATCH_NO check so that in |
30b608eb DK |
8405 | this case the defaults are in there. */ |
8406 | ba->access = ACCESS_UNKNOWN; | |
8407 | ba->pass_arg = NULL; | |
8408 | ba->pass_arg_num = 0; | |
8409 | ba->nopass = 0; | |
8410 | ba->non_overridable = 0; | |
b0e5fa94 | 8411 | ba->deferred = 0; |
90661f26 | 8412 | ba->ppc = ppc; |
30b608eb DK |
8413 | |
8414 | /* If we find a comma, we believe there are binding attributes. */ | |
90661f26 JW |
8415 | m = gfc_match_char (','); |
8416 | if (m == MATCH_NO) | |
8417 | goto done; | |
30b608eb DK |
8418 | |
8419 | do | |
8420 | { | |
e157f736 DK |
8421 | /* Access specifier. */ |
8422 | ||
8423 | m = gfc_match (" public"); | |
30b608eb DK |
8424 | if (m == MATCH_ERROR) |
8425 | goto error; | |
8426 | if (m == MATCH_YES) | |
8427 | { | |
e157f736 | 8428 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 8429 | { |
e157f736 | 8430 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
8431 | goto error; |
8432 | } | |
8433 | ||
e157f736 | 8434 | ba->access = ACCESS_PUBLIC; |
30b608eb DK |
8435 | continue; |
8436 | } | |
8437 | ||
e157f736 | 8438 | m = gfc_match (" private"); |
30b608eb DK |
8439 | if (m == MATCH_ERROR) |
8440 | goto error; | |
8441 | if (m == MATCH_YES) | |
8442 | { | |
e157f736 | 8443 | if (ba->access != ACCESS_UNKNOWN) |
30b608eb | 8444 | { |
e157f736 | 8445 | gfc_error ("Duplicate access-specifier at %C"); |
30b608eb DK |
8446 | goto error; |
8447 | } | |
8448 | ||
e157f736 | 8449 | ba->access = ACCESS_PRIVATE; |
30b608eb DK |
8450 | continue; |
8451 | } | |
8452 | ||
e157f736 DK |
8453 | /* If inside GENERIC, the following is not allowed. */ |
8454 | if (!generic) | |
30b608eb | 8455 | { |
30b608eb | 8456 | |
e157f736 DK |
8457 | /* NOPASS flag. */ |
8458 | m = gfc_match (" nopass"); | |
8459 | if (m == MATCH_ERROR) | |
8460 | goto error; | |
8461 | if (m == MATCH_YES) | |
30b608eb | 8462 | { |
e157f736 DK |
8463 | if (found_passing) |
8464 | { | |
8465 | gfc_error ("Binding attributes already specify passing," | |
8466 | " illegal NOPASS at %C"); | |
8467 | goto error; | |
8468 | } | |
8469 | ||
8470 | found_passing = true; | |
8471 | ba->nopass = 1; | |
8472 | continue; | |
30b608eb DK |
8473 | } |
8474 | ||
e157f736 DK |
8475 | /* PASS possibly including argument. */ |
8476 | m = gfc_match (" pass"); | |
8477 | if (m == MATCH_ERROR) | |
8478 | goto error; | |
8479 | if (m == MATCH_YES) | |
30b608eb | 8480 | { |
e157f736 DK |
8481 | char arg[GFC_MAX_SYMBOL_LEN + 1]; |
8482 | ||
8483 | if (found_passing) | |
8484 | { | |
8485 | gfc_error ("Binding attributes already specify passing," | |
8486 | " illegal PASS at %C"); | |
8487 | goto error; | |
8488 | } | |
8489 | ||
8490 | m = gfc_match (" ( %n )", arg); | |
8491 | if (m == MATCH_ERROR) | |
8492 | goto error; | |
8493 | if (m == MATCH_YES) | |
90661f26 | 8494 | ba->pass_arg = gfc_get_string (arg); |
e157f736 DK |
8495 | gcc_assert ((m == MATCH_YES) == (ba->pass_arg != NULL)); |
8496 | ||
8497 | found_passing = true; | |
8498 | ba->nopass = 0; | |
8499 | continue; | |
30b608eb DK |
8500 | } |
8501 | ||
713485cc JW |
8502 | if (ppc) |
8503 | { | |
8504 | /* POINTER flag. */ | |
8505 | m = gfc_match (" pointer"); | |
8506 | if (m == MATCH_ERROR) | |
8507 | goto error; | |
8508 | if (m == MATCH_YES) | |
8509 | { | |
8510 | if (seen_ptr) | |
8511 | { | |
8512 | gfc_error ("Duplicate POINTER attribute at %C"); | |
8513 | goto error; | |
8514 | } | |
8515 | ||
8516 | seen_ptr = true; | |
713485cc JW |
8517 | continue; |
8518 | } | |
8519 | } | |
8520 | else | |
8521 | { | |
8522 | /* NON_OVERRIDABLE flag. */ | |
8523 | m = gfc_match (" non_overridable"); | |
8524 | if (m == MATCH_ERROR) | |
8525 | goto error; | |
8526 | if (m == MATCH_YES) | |
8527 | { | |
8528 | if (ba->non_overridable) | |
8529 | { | |
8530 | gfc_error ("Duplicate NON_OVERRIDABLE at %C"); | |
8531 | goto error; | |
8532 | } | |
8533 | ||
8534 | ba->non_overridable = 1; | |
8535 | continue; | |
8536 | } | |
8537 | ||
8538 | /* DEFERRED flag. */ | |
8539 | m = gfc_match (" deferred"); | |
8540 | if (m == MATCH_ERROR) | |
8541 | goto error; | |
8542 | if (m == MATCH_YES) | |
8543 | { | |
8544 | if (ba->deferred) | |
8545 | { | |
8546 | gfc_error ("Duplicate DEFERRED at %C"); | |
8547 | goto error; | |
8548 | } | |
8549 | ||
8550 | ba->deferred = 1; | |
8551 | continue; | |
8552 | } | |
8553 | } | |
8554 | ||
30b608eb DK |
8555 | } |
8556 | ||
8557 | /* Nothing matching found. */ | |
e157f736 DK |
8558 | if (generic) |
8559 | gfc_error ("Expected access-specifier at %C"); | |
8560 | else | |
8561 | gfc_error ("Expected binding attribute at %C"); | |
30b608eb DK |
8562 | goto error; |
8563 | } | |
8564 | while (gfc_match_char (',') == MATCH_YES); | |
8565 | ||
b0e5fa94 DK |
8566 | /* NON_OVERRIDABLE and DEFERRED exclude themselves. */ |
8567 | if (ba->non_overridable && ba->deferred) | |
8568 | { | |
8569 | gfc_error ("NON_OVERRIDABLE and DEFERRED can't both appear at %C"); | |
8570 | goto error; | |
8571 | } | |
8572 | ||
90661f26 JW |
8573 | m = MATCH_YES; |
8574 | ||
8575 | done: | |
e157f736 DK |
8576 | if (ba->access == ACCESS_UNKNOWN) |
8577 | ba->access = gfc_typebound_default_access; | |
8578 | ||
713485cc JW |
8579 | if (ppc && !seen_ptr) |
8580 | { | |
8581 | gfc_error ("POINTER attribute is required for procedure pointer component" | |
8582 | " at %C"); | |
8583 | goto error; | |
8584 | } | |
8585 | ||
90661f26 | 8586 | return m; |
30b608eb DK |
8587 | |
8588 | error: | |
30b608eb DK |
8589 | return MATCH_ERROR; |
8590 | } | |
8591 | ||
8592 | ||
8593 | /* Match a PROCEDURE specific binding inside a derived type. */ | |
8594 | ||
8595 | static match | |
8596 | match_procedure_in_type (void) | |
8597 | { | |
8598 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8599 | char target_buf[GFC_MAX_SYMBOL_LEN + 1]; | |
1be17993 | 8600 | char* target = NULL, *ifc = NULL; |
3e15518b | 8601 | gfc_typebound_proc tb; |
30b608eb DK |
8602 | bool seen_colons; |
8603 | bool seen_attrs; | |
8604 | match m; | |
8605 | gfc_symtree* stree; | |
8606 | gfc_namespace* ns; | |
8607 | gfc_symbol* block; | |
1be17993 | 8608 | int num; |
30b608eb DK |
8609 | |
8610 | /* Check current state. */ | |
8611 | gcc_assert (gfc_state_stack->state == COMP_DERIVED_CONTAINS); | |
8612 | block = gfc_state_stack->previous->sym; | |
8613 | gcc_assert (block); | |
8614 | ||
b0e5fa94 | 8615 | /* Try to match PROCEDURE(interface). */ |
30b608eb DK |
8616 | if (gfc_match (" (") == MATCH_YES) |
8617 | { | |
b0e5fa94 DK |
8618 | m = gfc_match_name (target_buf); |
8619 | if (m == MATCH_ERROR) | |
8620 | return m; | |
8621 | if (m != MATCH_YES) | |
8622 | { | |
a4d9b221 | 8623 | gfc_error ("Interface-name expected after %<(%> at %C"); |
b0e5fa94 DK |
8624 | return MATCH_ERROR; |
8625 | } | |
8626 | ||
8627 | if (gfc_match (" )") != MATCH_YES) | |
8628 | { | |
a4d9b221 | 8629 | gfc_error ("%<)%> expected at %C"); |
b0e5fa94 DK |
8630 | return MATCH_ERROR; |
8631 | } | |
8632 | ||
1be17993 | 8633 | ifc = target_buf; |
30b608eb DK |
8634 | } |
8635 | ||
8636 | /* Construct the data structure. */ | |
ff5b6492 | 8637 | memset (&tb, 0, sizeof (tb)); |
3e15518b | 8638 | tb.where = gfc_current_locus; |
30b608eb DK |
8639 | |
8640 | /* Match binding attributes. */ | |
3e15518b | 8641 | m = match_binding_attributes (&tb, false, false); |
30b608eb DK |
8642 | if (m == MATCH_ERROR) |
8643 | return m; | |
8644 | seen_attrs = (m == MATCH_YES); | |
8645 | ||
1be17993 | 8646 | /* Check that attribute DEFERRED is given if an interface is specified. */ |
3e15518b | 8647 | if (tb.deferred && !ifc) |
b0e5fa94 DK |
8648 | { |
8649 | gfc_error ("Interface must be specified for DEFERRED binding at %C"); | |
8650 | return MATCH_ERROR; | |
8651 | } | |
3e15518b | 8652 | if (ifc && !tb.deferred) |
b0e5fa94 DK |
8653 | { |
8654 | gfc_error ("PROCEDURE(interface) at %C should be declared DEFERRED"); | |
8655 | return MATCH_ERROR; | |
8656 | } | |
8657 | ||
30b608eb DK |
8658 | /* Match the colons. */ |
8659 | m = gfc_match (" ::"); | |
8660 | if (m == MATCH_ERROR) | |
8661 | return m; | |
8662 | seen_colons = (m == MATCH_YES); | |
8663 | if (seen_attrs && !seen_colons) | |
8664 | { | |
a4d9b221 | 8665 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
30b608eb DK |
8666 | return MATCH_ERROR; |
8667 | } | |
8668 | ||
f5acf0f2 | 8669 | /* Match the binding names. */ |
1be17993 | 8670 | for(num=1;;num++) |
30b608eb | 8671 | { |
1be17993 JW |
8672 | m = gfc_match_name (name); |
8673 | if (m == MATCH_ERROR) | |
8674 | return m; | |
8675 | if (m == MATCH_NO) | |
b0e5fa94 | 8676 | { |
1be17993 | 8677 | gfc_error ("Expected binding name at %C"); |
b0e5fa94 DK |
8678 | return MATCH_ERROR; |
8679 | } | |
8680 | ||
524af0d6 | 8681 | if (num>1 && !gfc_notify_std (GFC_STD_F2008, "PROCEDURE list at %C")) |
1be17993 | 8682 | return MATCH_ERROR; |
30b608eb | 8683 | |
1be17993 JW |
8684 | /* Try to match the '=> target', if it's there. */ |
8685 | target = ifc; | |
8686 | m = gfc_match (" =>"); | |
30b608eb DK |
8687 | if (m == MATCH_ERROR) |
8688 | return m; | |
1be17993 | 8689 | if (m == MATCH_YES) |
30b608eb | 8690 | { |
3e15518b | 8691 | if (tb.deferred) |
1be17993 | 8692 | { |
a4d9b221 | 8693 | gfc_error ("%<=> target%> is invalid for DEFERRED binding at %C"); |
1be17993 JW |
8694 | return MATCH_ERROR; |
8695 | } | |
8696 | ||
8697 | if (!seen_colons) | |
8698 | { | |
a4d9b221 | 8699 | gfc_error ("%<::%> needed in PROCEDURE binding with explicit target" |
1be17993 JW |
8700 | " at %C"); |
8701 | return MATCH_ERROR; | |
8702 | } | |
8703 | ||
8704 | m = gfc_match_name (target_buf); | |
8705 | if (m == MATCH_ERROR) | |
8706 | return m; | |
8707 | if (m == MATCH_NO) | |
8708 | { | |
a4d9b221 | 8709 | gfc_error ("Expected binding target after %<=>%> at %C"); |
1be17993 JW |
8710 | return MATCH_ERROR; |
8711 | } | |
8712 | target = target_buf; | |
30b608eb | 8713 | } |
30b608eb | 8714 | |
1be17993 JW |
8715 | /* If no target was found, it has the same name as the binding. */ |
8716 | if (!target) | |
8717 | target = name; | |
30b608eb | 8718 | |
1be17993 JW |
8719 | /* Get the namespace to insert the symbols into. */ |
8720 | ns = block->f2k_derived; | |
8721 | gcc_assert (ns); | |
30b608eb | 8722 | |
1be17993 | 8723 | /* If the binding is DEFERRED, check that the containing type is ABSTRACT. */ |
3e15518b | 8724 | if (tb.deferred && !block->attr.abstract) |
1be17993 | 8725 | { |
c4100eae | 8726 | gfc_error ("Type %qs containing DEFERRED binding at %C " |
1be17993 JW |
8727 | "is not ABSTRACT", block->name); |
8728 | return MATCH_ERROR; | |
8729 | } | |
30b608eb | 8730 | |
1be17993 | 8731 | /* See if we already have a binding with this name in the symtree which |
6bd2c800 | 8732 | would be an error. If a GENERIC already targeted this binding, it may |
1be17993 JW |
8733 | be already there but then typebound is still NULL. */ |
8734 | stree = gfc_find_symtree (ns->tb_sym_root, name); | |
9f23af48 | 8735 | if (stree && stree->n.tb) |
1be17993 | 8736 | { |
c4100eae MLI |
8737 | gfc_error ("There is already a procedure with binding name %qs for " |
8738 | "the derived type %qs at %C", name, block->name); | |
1be17993 JW |
8739 | return MATCH_ERROR; |
8740 | } | |
b0e5fa94 | 8741 | |
1be17993 | 8742 | /* Insert it and set attributes. */ |
30b608eb | 8743 | |
9f23af48 MM |
8744 | if (!stree) |
8745 | { | |
8746 | stree = gfc_new_symtree (&ns->tb_sym_root, name); | |
8747 | gcc_assert (stree); | |
8748 | } | |
3e15518b | 8749 | stree->n.tb = gfc_get_typebound_proc (&tb); |
e34ccb4c | 8750 | |
3e15518b JW |
8751 | if (gfc_get_sym_tree (target, gfc_current_ns, &stree->n.tb->u.specific, |
8752 | false)) | |
1be17993 | 8753 | return MATCH_ERROR; |
3e15518b | 8754 | gfc_set_sym_referenced (stree->n.tb->u.specific->n.sym); |
f5acf0f2 | 8755 | |
1be17993 JW |
8756 | if (gfc_match_eos () == MATCH_YES) |
8757 | return MATCH_YES; | |
8758 | if (gfc_match_char (',') != MATCH_YES) | |
8759 | goto syntax; | |
e34ccb4c | 8760 | } |
30b608eb | 8761 | |
1be17993 JW |
8762 | syntax: |
8763 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
8764 | return MATCH_ERROR; | |
30b608eb DK |
8765 | } |
8766 | ||
8767 | ||
e157f736 DK |
8768 | /* Match a GENERIC procedure binding inside a derived type. */ |
8769 | ||
8770 | match | |
8771 | gfc_match_generic (void) | |
8772 | { | |
8773 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
94747289 | 8774 | char bind_name[GFC_MAX_SYMBOL_LEN + 16]; /* Allow space for OPERATOR(...). */ |
e157f736 DK |
8775 | gfc_symbol* block; |
8776 | gfc_typebound_proc tbattr; /* Used for match_binding_attributes. */ | |
8777 | gfc_typebound_proc* tb; | |
e157f736 | 8778 | gfc_namespace* ns; |
94747289 DK |
8779 | interface_type op_type; |
8780 | gfc_intrinsic_op op; | |
e157f736 DK |
8781 | match m; |
8782 | ||
8783 | /* Check current state. */ | |
8784 | if (gfc_current_state () == COMP_DERIVED) | |
8785 | { | |
8786 | gfc_error ("GENERIC at %C must be inside a derived-type CONTAINS"); | |
8787 | return MATCH_ERROR; | |
8788 | } | |
8789 | if (gfc_current_state () != COMP_DERIVED_CONTAINS) | |
8790 | return MATCH_NO; | |
8791 | block = gfc_state_stack->previous->sym; | |
8792 | ns = block->f2k_derived; | |
8793 | gcc_assert (block && ns); | |
8794 | ||
ff5b6492 MM |
8795 | memset (&tbattr, 0, sizeof (tbattr)); |
8796 | tbattr.where = gfc_current_locus; | |
8797 | ||
e157f736 | 8798 | /* See if we get an access-specifier. */ |
713485cc | 8799 | m = match_binding_attributes (&tbattr, true, false); |
e157f736 DK |
8800 | if (m == MATCH_ERROR) |
8801 | goto error; | |
8802 | ||
8803 | /* Now the colons, those are required. */ | |
8804 | if (gfc_match (" ::") != MATCH_YES) | |
8805 | { | |
a4d9b221 | 8806 | gfc_error ("Expected %<::%> at %C"); |
e157f736 DK |
8807 | goto error; |
8808 | } | |
8809 | ||
94747289 DK |
8810 | /* Match the binding name; depending on type (operator / generic) format |
8811 | it for future error messages into bind_name. */ | |
f5acf0f2 | 8812 | |
94747289 | 8813 | m = gfc_match_generic_spec (&op_type, name, &op); |
e157f736 DK |
8814 | if (m == MATCH_ERROR) |
8815 | return MATCH_ERROR; | |
8816 | if (m == MATCH_NO) | |
8817 | { | |
94747289 | 8818 | gfc_error ("Expected generic name or operator descriptor at %C"); |
e157f736 DK |
8819 | goto error; |
8820 | } | |
8821 | ||
94747289 | 8822 | switch (op_type) |
e157f736 | 8823 | { |
94747289 DK |
8824 | case INTERFACE_GENERIC: |
8825 | snprintf (bind_name, sizeof (bind_name), "%s", name); | |
8826 | break; | |
f5acf0f2 | 8827 | |
94747289 DK |
8828 | case INTERFACE_USER_OP: |
8829 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(.%s.)", name); | |
8830 | break; | |
f5acf0f2 | 8831 | |
94747289 DK |
8832 | case INTERFACE_INTRINSIC_OP: |
8833 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(%s)", | |
8834 | gfc_op2string (op)); | |
8835 | break; | |
8836 | ||
377e37c1 SK |
8837 | case INTERFACE_NAMELESS: |
8838 | gfc_error ("Malformed GENERIC statement at %C"); | |
8839 | goto error; | |
8840 | break; | |
8841 | ||
94747289 DK |
8842 | default: |
8843 | gcc_unreachable (); | |
8844 | } | |
e34ccb4c | 8845 | |
94747289 DK |
8846 | /* Match the required =>. */ |
8847 | if (gfc_match (" =>") != MATCH_YES) | |
8848 | { | |
a4d9b221 | 8849 | gfc_error ("Expected %<=>%> at %C"); |
94747289 DK |
8850 | goto error; |
8851 | } | |
f5acf0f2 | 8852 | |
94747289 DK |
8853 | /* Try to find existing GENERIC binding with this name / for this operator; |
8854 | if there is something, check that it is another GENERIC and then extend | |
8855 | it rather than building a new node. Otherwise, create it and put it | |
8856 | at the right position. */ | |
8857 | ||
8858 | switch (op_type) | |
8859 | { | |
8860 | case INTERFACE_USER_OP: | |
8861 | case INTERFACE_GENERIC: | |
8862 | { | |
8863 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
8864 | gfc_symtree* st; | |
8865 | ||
8866 | st = gfc_find_symtree (is_op ? ns->tb_uop_root : ns->tb_sym_root, name); | |
8867 | if (st) | |
8868 | { | |
8869 | tb = st->n.tb; | |
8870 | gcc_assert (tb); | |
8871 | } | |
8872 | else | |
8873 | tb = NULL; | |
8874 | ||
8875 | break; | |
8876 | } | |
8877 | ||
8878 | case INTERFACE_INTRINSIC_OP: | |
8879 | tb = ns->tb_op[op]; | |
8880 | break; | |
8881 | ||
8882 | default: | |
8883 | gcc_unreachable (); | |
8884 | } | |
8885 | ||
8886 | if (tb) | |
8887 | { | |
e34ccb4c | 8888 | if (!tb->is_generic) |
e157f736 | 8889 | { |
94747289 | 8890 | gcc_assert (op_type == INTERFACE_GENERIC); |
e157f736 | 8891 | gfc_error ("There's already a non-generic procedure with binding name" |
c4100eae | 8892 | " %qs for the derived type %qs at %C", |
94747289 | 8893 | bind_name, block->name); |
e157f736 DK |
8894 | goto error; |
8895 | } | |
8896 | ||
e157f736 DK |
8897 | if (tb->access != tbattr.access) |
8898 | { | |
8899 | gfc_error ("Binding at %C must have the same access as already" | |
c4100eae | 8900 | " defined binding %qs", bind_name); |
e157f736 DK |
8901 | goto error; |
8902 | } | |
8903 | } | |
8904 | else | |
8905 | { | |
3e15518b | 8906 | tb = gfc_get_typebound_proc (NULL); |
e157f736 DK |
8907 | tb->where = gfc_current_locus; |
8908 | tb->access = tbattr.access; | |
8909 | tb->is_generic = 1; | |
8910 | tb->u.generic = NULL; | |
94747289 DK |
8911 | |
8912 | switch (op_type) | |
8913 | { | |
8914 | case INTERFACE_GENERIC: | |
8915 | case INTERFACE_USER_OP: | |
8916 | { | |
8917 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
8918 | gfc_symtree* st; | |
8919 | ||
8920 | st = gfc_new_symtree (is_op ? &ns->tb_uop_root : &ns->tb_sym_root, | |
8921 | name); | |
8922 | gcc_assert (st); | |
8923 | st->n.tb = tb; | |
8924 | ||
8925 | break; | |
8926 | } | |
f5acf0f2 | 8927 | |
94747289 DK |
8928 | case INTERFACE_INTRINSIC_OP: |
8929 | ns->tb_op[op] = tb; | |
8930 | break; | |
8931 | ||
8932 | default: | |
8933 | gcc_unreachable (); | |
8934 | } | |
e157f736 DK |
8935 | } |
8936 | ||
8937 | /* Now, match all following names as specific targets. */ | |
8938 | do | |
8939 | { | |
8940 | gfc_symtree* target_st; | |
8941 | gfc_tbp_generic* target; | |
8942 | ||
8943 | m = gfc_match_name (name); | |
8944 | if (m == MATCH_ERROR) | |
8945 | goto error; | |
8946 | if (m == MATCH_NO) | |
8947 | { | |
8948 | gfc_error ("Expected specific binding name at %C"); | |
8949 | goto error; | |
8950 | } | |
8951 | ||
e34ccb4c | 8952 | target_st = gfc_get_tbp_symtree (&ns->tb_sym_root, name); |
e157f736 DK |
8953 | |
8954 | /* See if this is a duplicate specification. */ | |
8955 | for (target = tb->u.generic; target; target = target->next) | |
8956 | if (target_st == target->specific_st) | |
8957 | { | |
c4100eae MLI |
8958 | gfc_error ("%qs already defined as specific binding for the" |
8959 | " generic %qs at %C", name, bind_name); | |
e157f736 DK |
8960 | goto error; |
8961 | } | |
8962 | ||
e157f736 DK |
8963 | target = gfc_get_tbp_generic (); |
8964 | target->specific_st = target_st; | |
8965 | target->specific = NULL; | |
8966 | target->next = tb->u.generic; | |
218e1228 TB |
8967 | target->is_operator = ((op_type == INTERFACE_USER_OP) |
8968 | || (op_type == INTERFACE_INTRINSIC_OP)); | |
e157f736 DK |
8969 | tb->u.generic = target; |
8970 | } | |
8971 | while (gfc_match (" ,") == MATCH_YES); | |
8972 | ||
8973 | /* Here should be the end. */ | |
8974 | if (gfc_match_eos () != MATCH_YES) | |
8975 | { | |
8976 | gfc_error ("Junk after GENERIC binding at %C"); | |
8977 | goto error; | |
8978 | } | |
8979 | ||
8980 | return MATCH_YES; | |
8981 | ||
8982 | error: | |
8983 | return MATCH_ERROR; | |
8984 | } | |
8985 | ||
8986 | ||
34523524 DK |
8987 | /* Match a FINAL declaration inside a derived type. */ |
8988 | ||
8989 | match | |
8990 | gfc_match_final_decl (void) | |
8991 | { | |
8992 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8993 | gfc_symbol* sym; | |
8994 | match m; | |
8995 | gfc_namespace* module_ns; | |
8996 | bool first, last; | |
30b608eb | 8997 | gfc_symbol* block; |
34523524 | 8998 | |
33344e0f JW |
8999 | if (gfc_current_form == FORM_FREE) |
9000 | { | |
9001 | char c = gfc_peek_ascii_char (); | |
9002 | if (!gfc_is_whitespace (c) && c != ':') | |
9003 | return MATCH_NO; | |
9004 | } | |
f5acf0f2 | 9005 | |
30b608eb | 9006 | if (gfc_state_stack->state != COMP_DERIVED_CONTAINS) |
34523524 | 9007 | { |
33344e0f JW |
9008 | if (gfc_current_form == FORM_FIXED) |
9009 | return MATCH_NO; | |
9010 | ||
34523524 | 9011 | gfc_error ("FINAL declaration at %C must be inside a derived type " |
30b608eb | 9012 | "CONTAINS section"); |
34523524 DK |
9013 | return MATCH_ERROR; |
9014 | } | |
9015 | ||
30b608eb DK |
9016 | block = gfc_state_stack->previous->sym; |
9017 | gcc_assert (block); | |
34523524 | 9018 | |
30b608eb DK |
9019 | if (!gfc_state_stack->previous || !gfc_state_stack->previous->previous |
9020 | || gfc_state_stack->previous->previous->state != COMP_MODULE) | |
34523524 DK |
9021 | { |
9022 | gfc_error ("Derived type declaration with FINAL at %C must be in the" | |
9023 | " specification part of a MODULE"); | |
9024 | return MATCH_ERROR; | |
9025 | } | |
9026 | ||
9027 | module_ns = gfc_current_ns; | |
9028 | gcc_assert (module_ns); | |
9029 | gcc_assert (module_ns->proc_name->attr.flavor == FL_MODULE); | |
9030 | ||
9031 | /* Match optional ::, don't care about MATCH_YES or MATCH_NO. */ | |
9032 | if (gfc_match (" ::") == MATCH_ERROR) | |
9033 | return MATCH_ERROR; | |
9034 | ||
9035 | /* Match the sequence of procedure names. */ | |
9036 | first = true; | |
9037 | last = false; | |
9038 | do | |
9039 | { | |
9040 | gfc_finalizer* f; | |
9041 | ||
9042 | if (first && gfc_match_eos () == MATCH_YES) | |
9043 | { | |
9044 | gfc_error ("Empty FINAL at %C"); | |
9045 | return MATCH_ERROR; | |
9046 | } | |
9047 | ||
9048 | m = gfc_match_name (name); | |
9049 | if (m == MATCH_NO) | |
9050 | { | |
9051 | gfc_error ("Expected module procedure name at %C"); | |
9052 | return MATCH_ERROR; | |
9053 | } | |
9054 | else if (m != MATCH_YES) | |
9055 | return MATCH_ERROR; | |
9056 | ||
9057 | if (gfc_match_eos () == MATCH_YES) | |
9058 | last = true; | |
9059 | if (!last && gfc_match_char (',') != MATCH_YES) | |
9060 | { | |
a4d9b221 | 9061 | gfc_error ("Expected %<,%> at %C"); |
34523524 DK |
9062 | return MATCH_ERROR; |
9063 | } | |
9064 | ||
9065 | if (gfc_get_symbol (name, module_ns, &sym)) | |
9066 | { | |
c4100eae | 9067 | gfc_error ("Unknown procedure name %qs at %C", name); |
34523524 DK |
9068 | return MATCH_ERROR; |
9069 | } | |
9070 | ||
9071 | /* Mark the symbol as module procedure. */ | |
9072 | if (sym->attr.proc != PROC_MODULE | |
524af0d6 | 9073 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
34523524 DK |
9074 | return MATCH_ERROR; |
9075 | ||
9076 | /* Check if we already have this symbol in the list, this is an error. */ | |
30b608eb | 9077 | for (f = block->f2k_derived->finalizers; f; f = f->next) |
f6fad28e | 9078 | if (f->proc_sym == sym) |
34523524 | 9079 | { |
c4100eae | 9080 | gfc_error ("%qs at %C is already defined as FINAL procedure!", |
34523524 DK |
9081 | name); |
9082 | return MATCH_ERROR; | |
9083 | } | |
9084 | ||
9085 | /* Add this symbol to the list of finalizers. */ | |
30b608eb | 9086 | gcc_assert (block->f2k_derived); |
2050626a | 9087 | sym->refs++; |
ece3f663 | 9088 | f = XCNEW (gfc_finalizer); |
f6fad28e DK |
9089 | f->proc_sym = sym; |
9090 | f->proc_tree = NULL; | |
34523524 | 9091 | f->where = gfc_current_locus; |
30b608eb DK |
9092 | f->next = block->f2k_derived->finalizers; |
9093 | block->f2k_derived->finalizers = f; | |
34523524 DK |
9094 | |
9095 | first = false; | |
9096 | } | |
9097 | while (!last); | |
9098 | ||
9099 | return MATCH_YES; | |
9100 | } | |
08a6b8e0 TB |
9101 | |
9102 | ||
9103 | const ext_attr_t ext_attr_list[] = { | |
e7ac6a7c TB |
9104 | { "dllimport", EXT_ATTR_DLLIMPORT, "dllimport" }, |
9105 | { "dllexport", EXT_ATTR_DLLEXPORT, "dllexport" }, | |
9106 | { "cdecl", EXT_ATTR_CDECL, "cdecl" }, | |
9107 | { "stdcall", EXT_ATTR_STDCALL, "stdcall" }, | |
9108 | { "fastcall", EXT_ATTR_FASTCALL, "fastcall" }, | |
9109 | { "no_arg_check", EXT_ATTR_NO_ARG_CHECK, NULL }, | |
9110 | { NULL, EXT_ATTR_LAST, NULL } | |
08a6b8e0 TB |
9111 | }; |
9112 | ||
9113 | /* Match a !GCC$ ATTRIBUTES statement of the form: | |
9114 | !GCC$ ATTRIBUTES attribute-list :: var-name [, var-name] ... | |
9115 | When we come here, we have already matched the !GCC$ ATTRIBUTES string. | |
9116 | ||
9117 | TODO: We should support all GCC attributes using the same syntax for | |
9118 | the attribute list, i.e. the list in C | |
9119 | __attributes(( attribute-list )) | |
9120 | matches then | |
9121 | !GCC$ ATTRIBUTES attribute-list :: | |
9122 | Cf. c-parser.c's c_parser_attributes; the data can then directly be | |
9123 | saved into a TREE. | |
9124 | ||
9125 | As there is absolutely no risk of confusion, we should never return | |
9126 | MATCH_NO. */ | |
9127 | match | |
9128 | gfc_match_gcc_attributes (void) | |
f5acf0f2 | 9129 | { |
08a6b8e0 TB |
9130 | symbol_attribute attr; |
9131 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9132 | unsigned id; | |
9133 | gfc_symbol *sym; | |
9134 | match m; | |
9135 | ||
9136 | gfc_clear_attr (&attr); | |
9137 | for(;;) | |
9138 | { | |
9139 | char ch; | |
9140 | ||
9141 | if (gfc_match_name (name) != MATCH_YES) | |
9142 | return MATCH_ERROR; | |
9143 | ||
9144 | for (id = 0; id < EXT_ATTR_LAST; id++) | |
9145 | if (strcmp (name, ext_attr_list[id].name) == 0) | |
9146 | break; | |
9147 | ||
9148 | if (id == EXT_ATTR_LAST) | |
9149 | { | |
9150 | gfc_error ("Unknown attribute in !GCC$ ATTRIBUTES statement at %C"); | |
9151 | return MATCH_ERROR; | |
9152 | } | |
9153 | ||
524af0d6 | 9154 | if (!gfc_add_ext_attribute (&attr, (ext_attr_id_t)id, &gfc_current_locus)) |
08a6b8e0 TB |
9155 | return MATCH_ERROR; |
9156 | ||
9157 | gfc_gobble_whitespace (); | |
9158 | ch = gfc_next_ascii_char (); | |
9159 | if (ch == ':') | |
9160 | { | |
9161 | /* This is the successful exit condition for the loop. */ | |
9162 | if (gfc_next_ascii_char () == ':') | |
9163 | break; | |
9164 | } | |
9165 | ||
9166 | if (ch == ',') | |
9167 | continue; | |
9168 | ||
9169 | goto syntax; | |
9170 | } | |
9171 | ||
9172 | if (gfc_match_eos () == MATCH_YES) | |
9173 | goto syntax; | |
9174 | ||
9175 | for(;;) | |
9176 | { | |
9177 | m = gfc_match_name (name); | |
9178 | if (m != MATCH_YES) | |
9179 | return m; | |
9180 | ||
9181 | if (find_special (name, &sym, true)) | |
9182 | return MATCH_ERROR; | |
f5acf0f2 | 9183 | |
08a6b8e0 TB |
9184 | sym->attr.ext_attr |= attr.ext_attr; |
9185 | ||
9186 | if (gfc_match_eos () == MATCH_YES) | |
9187 | break; | |
9188 | ||
9189 | if (gfc_match_char (',') != MATCH_YES) | |
9190 | goto syntax; | |
9191 | } | |
9192 | ||
9193 | return MATCH_YES; | |
9194 | ||
9195 | syntax: | |
9196 | gfc_error ("Syntax error in !GCC$ ATTRIBUTES statement at %C"); | |
9197 | return MATCH_ERROR; | |
9198 | } |