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4ee9c684 | 1 | /* Declaration statement matcher |
2d76519f | 2 | Copyright (C) 2002, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 |
1a9745d2 | 3 | Free Software Foundation, Inc. |
4ee9c684 | 4 | Contributed by Andy Vaught |
5 | ||
c84b470d | 6 | This file is part of GCC. |
4ee9c684 | 7 | |
c84b470d | 8 | GCC is free software; you can redistribute it and/or modify it under |
9 | the terms of the GNU General Public License as published by the Free | |
bdabe786 | 10 | Software Foundation; either version 3, or (at your option) any later |
c84b470d | 11 | version. |
4ee9c684 | 12 | |
c84b470d | 13 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | for more details. | |
4ee9c684 | 17 | |
18 | You should have received a copy of the GNU General Public License | |
bdabe786 | 19 | along with GCC; see the file COPYING3. If not see |
20 | <http://www.gnu.org/licenses/>. */ | |
4ee9c684 | 21 | |
4ee9c684 | 22 | #include "config.h" |
7436502b | 23 | #include "system.h" |
4ee9c684 | 24 | #include "gfortran.h" |
25 | #include "match.h" | |
26 | #include "parse.h" | |
6f092e31 | 27 | #include "flags.h" |
126387b5 | 28 | #include "constructor.h" |
7b2060ba | 29 | #include "tree.h" |
cbbac028 | 30 | |
31 | /* Macros to access allocate memory for gfc_data_variable, | |
32 | gfc_data_value and gfc_data. */ | |
48d8ad5a | 33 | #define gfc_get_data_variable() XCNEW (gfc_data_variable) |
34 | #define gfc_get_data_value() XCNEW (gfc_data_value) | |
35 | #define gfc_get_data() XCNEW (gfc_data) | |
cbbac028 | 36 | |
37 | ||
1d8a57d8 | 38 | static gfc_try set_binding_label (const char **, const char *, int); |
7b2060ba | 39 | |
40 | ||
36ae04f2 | 41 | /* This flag is set if an old-style length selector is matched |
4ee9c684 | 42 | during a type-declaration statement. */ |
43 | ||
44 | static int old_char_selector; | |
45 | ||
5739e54e | 46 | /* When variables acquire types and attributes from a declaration |
4ee9c684 | 47 | statement, they get them from the following static variables. The |
48 | first part of a declaration sets these variables and the second | |
49 | part copies these into symbol structures. */ | |
50 | ||
51 | static gfc_typespec current_ts; | |
52 | ||
53 | static symbol_attribute current_attr; | |
54 | static gfc_array_spec *current_as; | |
55 | static int colon_seen; | |
56 | ||
c5d33754 | 57 | /* The current binding label (if any). */ |
1d8a57d8 | 58 | static const char* curr_binding_label; |
c5d33754 | 59 | /* Need to know how many identifiers are on the current data declaration |
60 | line in case we're given the BIND(C) attribute with a NAME= specifier. */ | |
61 | static int num_idents_on_line; | |
62 | /* Need to know if a NAME= specifier was found during gfc_match_bind_c so we | |
63 | can supply a name if the curr_binding_label is nil and NAME= was not. */ | |
64 | static int has_name_equals = 0; | |
65 | ||
3b6a4b41 | 66 | /* Initializer of the previous enumerator. */ |
67 | ||
68 | static gfc_expr *last_initializer; | |
69 | ||
70 | /* History of all the enumerators is maintained, so that | |
71 | kind values of all the enumerators could be updated depending | |
72 | upon the maximum initialized value. */ | |
73 | ||
74 | typedef struct enumerator_history | |
75 | { | |
76 | gfc_symbol *sym; | |
77 | gfc_expr *initializer; | |
78 | struct enumerator_history *next; | |
79 | } | |
80 | enumerator_history; | |
81 | ||
82 | /* Header of enum history chain. */ | |
83 | ||
84 | static enumerator_history *enum_history = NULL; | |
85 | ||
86 | /* Pointer of enum history node containing largest initializer. */ | |
87 | ||
88 | static enumerator_history *max_enum = NULL; | |
89 | ||
4ee9c684 | 90 | /* gfc_new_block points to the symbol of a newly matched block. */ |
91 | ||
92 | gfc_symbol *gfc_new_block; | |
93 | ||
077932f9 | 94 | bool gfc_matching_function; |
67a51c8e | 95 | |
4ee9c684 | 96 | |
b4f45d02 | 97 | /********************* DATA statement subroutines *********************/ |
98 | ||
1bfea7e8 | 99 | static bool in_match_data = false; |
100 | ||
101 | bool | |
102 | gfc_in_match_data (void) | |
103 | { | |
104 | return in_match_data; | |
105 | } | |
106 | ||
cbbac028 | 107 | static void |
108 | set_in_match_data (bool set_value) | |
1bfea7e8 | 109 | { |
110 | in_match_data = set_value; | |
111 | } | |
112 | ||
b4f45d02 | 113 | /* Free a gfc_data_variable structure and everything beneath it. */ |
114 | ||
115 | static void | |
1a9745d2 | 116 | free_variable (gfc_data_variable *p) |
b4f45d02 | 117 | { |
118 | gfc_data_variable *q; | |
119 | ||
120 | for (; p; p = q) | |
121 | { | |
122 | q = p->next; | |
123 | gfc_free_expr (p->expr); | |
124 | gfc_free_iterator (&p->iter, 0); | |
125 | free_variable (p->list); | |
434f0922 | 126 | free (p); |
b4f45d02 | 127 | } |
128 | } | |
129 | ||
130 | ||
131 | /* Free a gfc_data_value structure and everything beneath it. */ | |
132 | ||
133 | static void | |
1a9745d2 | 134 | free_value (gfc_data_value *p) |
b4f45d02 | 135 | { |
136 | gfc_data_value *q; | |
137 | ||
138 | for (; p; p = q) | |
139 | { | |
140 | q = p->next; | |
2d4466dd | 141 | mpz_clear (p->repeat); |
b4f45d02 | 142 | gfc_free_expr (p->expr); |
434f0922 | 143 | free (p); |
b4f45d02 | 144 | } |
145 | } | |
146 | ||
147 | ||
148 | /* Free a list of gfc_data structures. */ | |
149 | ||
150 | void | |
1a9745d2 | 151 | gfc_free_data (gfc_data *p) |
b4f45d02 | 152 | { |
153 | gfc_data *q; | |
154 | ||
155 | for (; p; p = q) | |
156 | { | |
157 | q = p->next; | |
b4f45d02 | 158 | free_variable (p->var); |
159 | free_value (p->value); | |
434f0922 | 160 | free (p); |
b4f45d02 | 161 | } |
162 | } | |
163 | ||
164 | ||
af29c1f0 | 165 | /* Free all data in a namespace. */ |
1a9745d2 | 166 | |
af29c1f0 | 167 | static void |
f6d0e37a | 168 | gfc_free_data_all (gfc_namespace *ns) |
af29c1f0 | 169 | { |
170 | gfc_data *d; | |
171 | ||
172 | for (;ns->data;) | |
173 | { | |
174 | d = ns->data->next; | |
434f0922 | 175 | free (ns->data); |
af29c1f0 | 176 | ns->data = d; |
177 | } | |
178 | } | |
179 | ||
180 | ||
b4f45d02 | 181 | static match var_element (gfc_data_variable *); |
182 | ||
183 | /* Match a list of variables terminated by an iterator and a right | |
184 | parenthesis. */ | |
185 | ||
186 | static match | |
1a9745d2 | 187 | var_list (gfc_data_variable *parent) |
b4f45d02 | 188 | { |
189 | gfc_data_variable *tail, var; | |
190 | match m; | |
191 | ||
192 | m = var_element (&var); | |
193 | if (m == MATCH_ERROR) | |
194 | return MATCH_ERROR; | |
195 | if (m == MATCH_NO) | |
196 | goto syntax; | |
197 | ||
198 | tail = gfc_get_data_variable (); | |
199 | *tail = var; | |
200 | ||
201 | parent->list = tail; | |
202 | ||
203 | for (;;) | |
204 | { | |
205 | if (gfc_match_char (',') != MATCH_YES) | |
206 | goto syntax; | |
207 | ||
208 | m = gfc_match_iterator (&parent->iter, 1); | |
209 | if (m == MATCH_YES) | |
210 | break; | |
211 | if (m == MATCH_ERROR) | |
212 | return MATCH_ERROR; | |
213 | ||
214 | m = var_element (&var); | |
215 | if (m == MATCH_ERROR) | |
216 | return MATCH_ERROR; | |
217 | if (m == MATCH_NO) | |
218 | goto syntax; | |
219 | ||
220 | tail->next = gfc_get_data_variable (); | |
221 | tail = tail->next; | |
222 | ||
223 | *tail = var; | |
224 | } | |
225 | ||
226 | if (gfc_match_char (')') != MATCH_YES) | |
227 | goto syntax; | |
228 | return MATCH_YES; | |
229 | ||
230 | syntax: | |
231 | gfc_syntax_error (ST_DATA); | |
232 | return MATCH_ERROR; | |
233 | } | |
234 | ||
235 | ||
236 | /* Match a single element in a data variable list, which can be a | |
237 | variable-iterator list. */ | |
238 | ||
239 | static match | |
c1977dbe | 240 | var_element (gfc_data_variable *new_var) |
b4f45d02 | 241 | { |
242 | match m; | |
243 | gfc_symbol *sym; | |
244 | ||
c1977dbe | 245 | memset (new_var, 0, sizeof (gfc_data_variable)); |
b4f45d02 | 246 | |
247 | if (gfc_match_char ('(') == MATCH_YES) | |
c1977dbe | 248 | return var_list (new_var); |
b4f45d02 | 249 | |
c1977dbe | 250 | m = gfc_match_variable (&new_var->expr, 0); |
b4f45d02 | 251 | if (m != MATCH_YES) |
252 | return m; | |
253 | ||
c1977dbe | 254 | sym = new_var->expr->symtree->n.sym; |
b4f45d02 | 255 | |
40de255b | 256 | /* Symbol should already have an associated type. */ |
257 | if (gfc_check_symbol_typed (sym, gfc_current_ns, | |
258 | false, gfc_current_locus) == FAILURE) | |
259 | return MATCH_ERROR; | |
260 | ||
1a9745d2 | 261 | if (!sym->attr.function && gfc_current_ns->parent |
262 | && gfc_current_ns->parent == sym->ns) | |
b4f45d02 | 263 | { |
c8df3e9c | 264 | gfc_error ("Host associated variable '%s' may not be in the DATA " |
7698a624 | 265 | "statement at %C", sym->name); |
b4f45d02 | 266 | return MATCH_ERROR; |
267 | } | |
268 | ||
c8df3e9c | 269 | if (gfc_current_state () != COMP_BLOCK_DATA |
1a9745d2 | 270 | && sym->attr.in_common |
271 | && gfc_notify_std (GFC_STD_GNU, "Extension: initialization of " | |
272 | "common block variable '%s' in DATA statement at %C", | |
273 | sym->name) == FAILURE) | |
c8df3e9c | 274 | return MATCH_ERROR; |
b4f45d02 | 275 | |
c1977dbe | 276 | if (gfc_add_data (&sym->attr, sym->name, &new_var->expr->where) == FAILURE) |
b4f45d02 | 277 | return MATCH_ERROR; |
278 | ||
279 | return MATCH_YES; | |
280 | } | |
281 | ||
282 | ||
283 | /* Match the top-level list of data variables. */ | |
284 | ||
285 | static match | |
1a9745d2 | 286 | top_var_list (gfc_data *d) |
b4f45d02 | 287 | { |
c1977dbe | 288 | gfc_data_variable var, *tail, *new_var; |
b4f45d02 | 289 | match m; |
290 | ||
291 | tail = NULL; | |
292 | ||
293 | for (;;) | |
294 | { | |
295 | m = var_element (&var); | |
296 | if (m == MATCH_NO) | |
297 | goto syntax; | |
298 | if (m == MATCH_ERROR) | |
299 | return MATCH_ERROR; | |
300 | ||
c1977dbe | 301 | new_var = gfc_get_data_variable (); |
302 | *new_var = var; | |
b4f45d02 | 303 | |
304 | if (tail == NULL) | |
c1977dbe | 305 | d->var = new_var; |
b4f45d02 | 306 | else |
c1977dbe | 307 | tail->next = new_var; |
b4f45d02 | 308 | |
c1977dbe | 309 | tail = new_var; |
b4f45d02 | 310 | |
311 | if (gfc_match_char ('/') == MATCH_YES) | |
312 | break; | |
313 | if (gfc_match_char (',') != MATCH_YES) | |
314 | goto syntax; | |
315 | } | |
316 | ||
317 | return MATCH_YES; | |
318 | ||
319 | syntax: | |
320 | gfc_syntax_error (ST_DATA); | |
af29c1f0 | 321 | gfc_free_data_all (gfc_current_ns); |
b4f45d02 | 322 | return MATCH_ERROR; |
323 | } | |
324 | ||
325 | ||
326 | static match | |
1a9745d2 | 327 | match_data_constant (gfc_expr **result) |
b4f45d02 | 328 | { |
329 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c2958b6b | 330 | gfc_symbol *sym, *dt_sym = NULL; |
b4f45d02 | 331 | gfc_expr *expr; |
332 | match m; | |
096d4ad9 | 333 | locus old_loc; |
b4f45d02 | 334 | |
335 | m = gfc_match_literal_constant (&expr, 1); | |
336 | if (m == MATCH_YES) | |
337 | { | |
338 | *result = expr; | |
339 | return MATCH_YES; | |
340 | } | |
341 | ||
342 | if (m == MATCH_ERROR) | |
343 | return MATCH_ERROR; | |
344 | ||
345 | m = gfc_match_null (result); | |
346 | if (m != MATCH_NO) | |
347 | return m; | |
348 | ||
096d4ad9 | 349 | old_loc = gfc_current_locus; |
350 | ||
351 | /* Should this be a structure component, try to match it | |
352 | before matching a name. */ | |
353 | m = gfc_match_rvalue (result); | |
354 | if (m == MATCH_ERROR) | |
355 | return m; | |
356 | ||
357 | if (m == MATCH_YES && (*result)->expr_type == EXPR_STRUCTURE) | |
358 | { | |
359 | if (gfc_simplify_expr (*result, 0) == FAILURE) | |
360 | m = MATCH_ERROR; | |
361 | return m; | |
362 | } | |
363 | ||
364 | gfc_current_locus = old_loc; | |
365 | ||
b4f45d02 | 366 | m = gfc_match_name (name); |
367 | if (m != MATCH_YES) | |
368 | return m; | |
369 | ||
370 | if (gfc_find_symbol (name, NULL, 1, &sym)) | |
371 | return MATCH_ERROR; | |
372 | ||
c2958b6b | 373 | if (sym && sym->attr.generic) |
374 | dt_sym = gfc_find_dt_in_generic (sym); | |
375 | ||
b4f45d02 | 376 | if (sym == NULL |
c2958b6b | 377 | || (sym->attr.flavor != FL_PARAMETER |
378 | && (!dt_sym || dt_sym->attr.flavor != FL_DERIVED))) | |
b4f45d02 | 379 | { |
380 | gfc_error ("Symbol '%s' must be a PARAMETER in DATA statement at %C", | |
381 | name); | |
382 | return MATCH_ERROR; | |
383 | } | |
c2958b6b | 384 | else if (dt_sym && dt_sym->attr.flavor == FL_DERIVED) |
385 | return gfc_match_structure_constructor (dt_sym, result); | |
b4f45d02 | 386 | |
f0a51891 | 387 | /* Check to see if the value is an initialization array expression. */ |
388 | if (sym->value->expr_type == EXPR_ARRAY) | |
389 | { | |
390 | gfc_current_locus = old_loc; | |
391 | ||
392 | m = gfc_match_init_expr (result); | |
393 | if (m == MATCH_ERROR) | |
394 | return m; | |
395 | ||
396 | if (m == MATCH_YES) | |
397 | { | |
398 | if (gfc_simplify_expr (*result, 0) == FAILURE) | |
399 | m = MATCH_ERROR; | |
400 | ||
401 | if ((*result)->expr_type == EXPR_CONSTANT) | |
402 | return m; | |
403 | else | |
404 | { | |
405 | gfc_error ("Invalid initializer %s in Data statement at %C", name); | |
406 | return MATCH_ERROR; | |
407 | } | |
408 | } | |
409 | } | |
410 | ||
b4f45d02 | 411 | *result = gfc_copy_expr (sym->value); |
412 | return MATCH_YES; | |
413 | } | |
414 | ||
415 | ||
416 | /* Match a list of values in a DATA statement. The leading '/' has | |
417 | already been seen at this point. */ | |
418 | ||
419 | static match | |
1a9745d2 | 420 | top_val_list (gfc_data *data) |
b4f45d02 | 421 | { |
c1977dbe | 422 | gfc_data_value *new_val, *tail; |
b4f45d02 | 423 | gfc_expr *expr; |
b4f45d02 | 424 | match m; |
425 | ||
426 | tail = NULL; | |
427 | ||
428 | for (;;) | |
429 | { | |
430 | m = match_data_constant (&expr); | |
431 | if (m == MATCH_NO) | |
432 | goto syntax; | |
433 | if (m == MATCH_ERROR) | |
434 | return MATCH_ERROR; | |
435 | ||
c1977dbe | 436 | new_val = gfc_get_data_value (); |
437 | mpz_init (new_val->repeat); | |
b4f45d02 | 438 | |
439 | if (tail == NULL) | |
c1977dbe | 440 | data->value = new_val; |
b4f45d02 | 441 | else |
c1977dbe | 442 | tail->next = new_val; |
b4f45d02 | 443 | |
c1977dbe | 444 | tail = new_val; |
b4f45d02 | 445 | |
446 | if (expr->ts.type != BT_INTEGER || gfc_match_char ('*') != MATCH_YES) | |
447 | { | |
448 | tail->expr = expr; | |
7d74abfd | 449 | mpz_set_ui (tail->repeat, 1); |
b4f45d02 | 450 | } |
451 | else | |
452 | { | |
7d74abfd | 453 | if (expr->ts.type == BT_INTEGER) |
454 | mpz_set (tail->repeat, expr->value.integer); | |
b4f45d02 | 455 | gfc_free_expr (expr); |
b4f45d02 | 456 | |
457 | m = match_data_constant (&tail->expr); | |
458 | if (m == MATCH_NO) | |
459 | goto syntax; | |
460 | if (m == MATCH_ERROR) | |
461 | return MATCH_ERROR; | |
462 | } | |
463 | ||
464 | if (gfc_match_char ('/') == MATCH_YES) | |
465 | break; | |
466 | if (gfc_match_char (',') == MATCH_NO) | |
467 | goto syntax; | |
468 | } | |
469 | ||
470 | return MATCH_YES; | |
471 | ||
472 | syntax: | |
473 | gfc_syntax_error (ST_DATA); | |
af29c1f0 | 474 | gfc_free_data_all (gfc_current_ns); |
b4f45d02 | 475 | return MATCH_ERROR; |
476 | } | |
477 | ||
478 | ||
479 | /* Matches an old style initialization. */ | |
480 | ||
481 | static match | |
482 | match_old_style_init (const char *name) | |
483 | { | |
484 | match m; | |
485 | gfc_symtree *st; | |
344b937e | 486 | gfc_symbol *sym; |
b4f45d02 | 487 | gfc_data *newdata; |
488 | ||
489 | /* Set up data structure to hold initializers. */ | |
490 | gfc_find_sym_tree (name, NULL, 0, &st); | |
344b937e | 491 | sym = st->n.sym; |
492 | ||
b4f45d02 | 493 | newdata = gfc_get_data (); |
494 | newdata->var = gfc_get_data_variable (); | |
495 | newdata->var->expr = gfc_get_variable_expr (st); | |
5aed5db3 | 496 | newdata->where = gfc_current_locus; |
b4f45d02 | 497 | |
f6d0e37a | 498 | /* Match initial value list. This also eats the terminal '/'. */ |
b4f45d02 | 499 | m = top_val_list (newdata); |
500 | if (m != MATCH_YES) | |
501 | { | |
434f0922 | 502 | free (newdata); |
b4f45d02 | 503 | return m; |
504 | } | |
505 | ||
506 | if (gfc_pure (NULL)) | |
507 | { | |
508 | gfc_error ("Initialization at %C is not allowed in a PURE procedure"); | |
434f0922 | 509 | free (newdata); |
b4f45d02 | 510 | return MATCH_ERROR; |
511 | } | |
512 | ||
8b0a2e85 | 513 | if (gfc_implicit_pure (NULL)) |
514 | gfc_current_ns->proc_name->attr.implicit_pure = 0; | |
515 | ||
344b937e | 516 | /* Mark the variable as having appeared in a data statement. */ |
517 | if (gfc_add_data (&sym->attr, sym->name, &sym->declared_at) == FAILURE) | |
518 | { | |
434f0922 | 519 | free (newdata); |
344b937e | 520 | return MATCH_ERROR; |
521 | } | |
522 | ||
b4f45d02 | 523 | /* Chain in namespace list of DATA initializers. */ |
524 | newdata->next = gfc_current_ns->data; | |
525 | gfc_current_ns->data = newdata; | |
526 | ||
527 | return m; | |
528 | } | |
529 | ||
1a9745d2 | 530 | |
b4f45d02 | 531 | /* Match the stuff following a DATA statement. If ERROR_FLAG is set, |
39fca56b | 532 | we are matching a DATA statement and are therefore issuing an error |
e14bee04 | 533 | if we encounter something unexpected, if not, we're trying to match |
fe06c0d5 | 534 | an old-style initialization expression of the form INTEGER I /2/. */ |
b4f45d02 | 535 | |
536 | match | |
537 | gfc_match_data (void) | |
538 | { | |
c1977dbe | 539 | gfc_data *new_data; |
b4f45d02 | 540 | match m; |
541 | ||
cbbac028 | 542 | set_in_match_data (true); |
1bfea7e8 | 543 | |
b4f45d02 | 544 | for (;;) |
545 | { | |
c1977dbe | 546 | new_data = gfc_get_data (); |
547 | new_data->where = gfc_current_locus; | |
b4f45d02 | 548 | |
c1977dbe | 549 | m = top_var_list (new_data); |
b4f45d02 | 550 | if (m != MATCH_YES) |
551 | goto cleanup; | |
552 | ||
c1977dbe | 553 | m = top_val_list (new_data); |
b4f45d02 | 554 | if (m != MATCH_YES) |
555 | goto cleanup; | |
556 | ||
c1977dbe | 557 | new_data->next = gfc_current_ns->data; |
558 | gfc_current_ns->data = new_data; | |
b4f45d02 | 559 | |
560 | if (gfc_match_eos () == MATCH_YES) | |
561 | break; | |
562 | ||
563 | gfc_match_char (','); /* Optional comma */ | |
564 | } | |
565 | ||
cbbac028 | 566 | set_in_match_data (false); |
1bfea7e8 | 567 | |
b4f45d02 | 568 | if (gfc_pure (NULL)) |
569 | { | |
570 | gfc_error ("DATA statement at %C is not allowed in a PURE procedure"); | |
571 | return MATCH_ERROR; | |
572 | } | |
573 | ||
8b0a2e85 | 574 | if (gfc_implicit_pure (NULL)) |
575 | gfc_current_ns->proc_name->attr.implicit_pure = 0; | |
576 | ||
b4f45d02 | 577 | return MATCH_YES; |
578 | ||
579 | cleanup: | |
cbbac028 | 580 | set_in_match_data (false); |
c1977dbe | 581 | gfc_free_data (new_data); |
b4f45d02 | 582 | return MATCH_ERROR; |
583 | } | |
584 | ||
585 | ||
586 | /************************ Declaration statements *********************/ | |
587 | ||
e97ac7c0 | 588 | |
589 | /* Auxilliary function to merge DIMENSION and CODIMENSION array specs. */ | |
590 | ||
591 | static void | |
592 | merge_array_spec (gfc_array_spec *from, gfc_array_spec *to, bool copy) | |
593 | { | |
594 | int i; | |
595 | ||
596 | if (to->rank == 0 && from->rank > 0) | |
597 | { | |
598 | to->rank = from->rank; | |
599 | to->type = from->type; | |
600 | to->cray_pointee = from->cray_pointee; | |
601 | to->cp_was_assumed = from->cp_was_assumed; | |
602 | ||
603 | for (i = 0; i < to->corank; i++) | |
604 | { | |
605 | to->lower[from->rank + i] = to->lower[i]; | |
606 | to->upper[from->rank + i] = to->upper[i]; | |
607 | } | |
608 | for (i = 0; i < from->rank; i++) | |
609 | { | |
610 | if (copy) | |
611 | { | |
612 | to->lower[i] = gfc_copy_expr (from->lower[i]); | |
613 | to->upper[i] = gfc_copy_expr (from->upper[i]); | |
614 | } | |
615 | else | |
616 | { | |
617 | to->lower[i] = from->lower[i]; | |
618 | to->upper[i] = from->upper[i]; | |
619 | } | |
620 | } | |
621 | } | |
622 | else if (to->corank == 0 && from->corank > 0) | |
623 | { | |
624 | to->corank = from->corank; | |
625 | to->cotype = from->cotype; | |
626 | ||
627 | for (i = 0; i < from->corank; i++) | |
628 | { | |
629 | if (copy) | |
630 | { | |
631 | to->lower[to->rank + i] = gfc_copy_expr (from->lower[i]); | |
632 | to->upper[to->rank + i] = gfc_copy_expr (from->upper[i]); | |
633 | } | |
634 | else | |
635 | { | |
636 | to->lower[to->rank + i] = from->lower[i]; | |
637 | to->upper[to->rank + i] = from->upper[i]; | |
638 | } | |
639 | } | |
640 | } | |
641 | } | |
642 | ||
643 | ||
4ee9c684 | 644 | /* Match an intent specification. Since this can only happen after an |
645 | INTENT word, a legal intent-spec must follow. */ | |
646 | ||
647 | static sym_intent | |
648 | match_intent_spec (void) | |
649 | { | |
650 | ||
651 | if (gfc_match (" ( in out )") == MATCH_YES) | |
652 | return INTENT_INOUT; | |
653 | if (gfc_match (" ( in )") == MATCH_YES) | |
654 | return INTENT_IN; | |
655 | if (gfc_match (" ( out )") == MATCH_YES) | |
656 | return INTENT_OUT; | |
657 | ||
658 | gfc_error ("Bad INTENT specification at %C"); | |
659 | return INTENT_UNKNOWN; | |
660 | } | |
661 | ||
662 | ||
663 | /* Matches a character length specification, which is either a | |
3e715c81 | 664 | specification expression, '*', or ':'. */ |
4ee9c684 | 665 | |
666 | static match | |
3e715c81 | 667 | char_len_param_value (gfc_expr **expr, bool *deferred) |
4ee9c684 | 668 | { |
294d58d3 | 669 | match m; |
670 | ||
3e715c81 | 671 | *expr = NULL; |
672 | *deferred = false; | |
673 | ||
4ee9c684 | 674 | if (gfc_match_char ('*') == MATCH_YES) |
3e715c81 | 675 | return MATCH_YES; |
676 | ||
677 | if (gfc_match_char (':') == MATCH_YES) | |
4ee9c684 | 678 | { |
3e715c81 | 679 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: deferred type " |
680 | "parameter at %C") == FAILURE) | |
681 | return MATCH_ERROR; | |
682 | ||
683 | *deferred = true; | |
684 | ||
4ee9c684 | 685 | return MATCH_YES; |
686 | } | |
687 | ||
294d58d3 | 688 | m = gfc_match_expr (expr); |
40de255b | 689 | |
690 | if (m == MATCH_YES | |
691 | && gfc_expr_check_typed (*expr, gfc_current_ns, false) == FAILURE) | |
692 | return MATCH_ERROR; | |
693 | ||
294d58d3 | 694 | if (m == MATCH_YES && (*expr)->expr_type == EXPR_FUNCTION) |
695 | { | |
696 | if ((*expr)->value.function.actual | |
697 | && (*expr)->value.function.actual->expr->symtree) | |
698 | { | |
699 | gfc_expr *e; | |
700 | e = (*expr)->value.function.actual->expr; | |
701 | if (e->symtree->n.sym->attr.flavor == FL_PROCEDURE | |
702 | && e->expr_type == EXPR_VARIABLE) | |
703 | { | |
704 | if (e->symtree->n.sym->ts.type == BT_UNKNOWN) | |
705 | goto syntax; | |
706 | if (e->symtree->n.sym->ts.type == BT_CHARACTER | |
eeebe20b | 707 | && e->symtree->n.sym->ts.u.cl |
708 | && e->symtree->n.sym->ts.u.cl->length->ts.type == BT_UNKNOWN) | |
294d58d3 | 709 | goto syntax; |
710 | } | |
711 | } | |
712 | } | |
713 | return m; | |
714 | ||
715 | syntax: | |
716 | gfc_error ("Conflict in attributes of function argument at %C"); | |
717 | return MATCH_ERROR; | |
4ee9c684 | 718 | } |
719 | ||
720 | ||
721 | /* A character length is a '*' followed by a literal integer or a | |
722 | char_len_param_value in parenthesis. */ | |
723 | ||
724 | static match | |
3e715c81 | 725 | match_char_length (gfc_expr **expr, bool *deferred) |
4ee9c684 | 726 | { |
3bd3b616 | 727 | int length; |
4ee9c684 | 728 | match m; |
729 | ||
3e715c81 | 730 | *deferred = false; |
4ee9c684 | 731 | m = gfc_match_char ('*'); |
732 | if (m != MATCH_YES) | |
733 | return m; | |
734 | ||
3bd3b616 | 735 | m = gfc_match_small_literal_int (&length, NULL); |
4ee9c684 | 736 | if (m == MATCH_ERROR) |
737 | return m; | |
738 | ||
739 | if (m == MATCH_YES) | |
740 | { | |
8e9b41f0 | 741 | if (gfc_notify_std (GFC_STD_F95_OBS, "Obsolescent feature: " |
742 | "Old-style character length at %C") == FAILURE) | |
743 | return MATCH_ERROR; | |
126387b5 | 744 | *expr = gfc_get_int_expr (gfc_default_integer_kind, NULL, length); |
4ee9c684 | 745 | return m; |
746 | } | |
747 | ||
748 | if (gfc_match_char ('(') == MATCH_NO) | |
749 | goto syntax; | |
750 | ||
3e715c81 | 751 | m = char_len_param_value (expr, deferred); |
077932f9 | 752 | if (m != MATCH_YES && gfc_matching_function) |
753 | { | |
754 | gfc_undo_symbols (); | |
755 | m = MATCH_YES; | |
756 | } | |
757 | ||
4ee9c684 | 758 | if (m == MATCH_ERROR) |
759 | return m; | |
760 | if (m == MATCH_NO) | |
761 | goto syntax; | |
762 | ||
763 | if (gfc_match_char (')') == MATCH_NO) | |
764 | { | |
765 | gfc_free_expr (*expr); | |
766 | *expr = NULL; | |
767 | goto syntax; | |
768 | } | |
769 | ||
770 | return MATCH_YES; | |
771 | ||
772 | syntax: | |
773 | gfc_error ("Syntax error in character length specification at %C"); | |
774 | return MATCH_ERROR; | |
775 | } | |
776 | ||
777 | ||
ee893be6 | 778 | /* Special subroutine for finding a symbol. Check if the name is found |
779 | in the current name space. If not, and we're compiling a function or | |
780 | subroutine and the parent compilation unit is an interface, then check | |
781 | to see if the name we've been given is the name of the interface | |
782 | (located in another namespace). */ | |
4ee9c684 | 783 | |
784 | static int | |
36b0a1b0 | 785 | find_special (const char *name, gfc_symbol **result, bool allow_subroutine) |
4ee9c684 | 786 | { |
787 | gfc_state_data *s; | |
36b0a1b0 | 788 | gfc_symtree *st; |
ee893be6 | 789 | int i; |
4ee9c684 | 790 | |
36b0a1b0 | 791 | i = gfc_get_sym_tree (name, NULL, &st, allow_subroutine); |
e14bee04 | 792 | if (i == 0) |
36b0a1b0 | 793 | { |
794 | *result = st ? st->n.sym : NULL; | |
795 | goto end; | |
796 | } | |
e14bee04 | 797 | |
4ee9c684 | 798 | if (gfc_current_state () != COMP_SUBROUTINE |
799 | && gfc_current_state () != COMP_FUNCTION) | |
ee893be6 | 800 | goto end; |
4ee9c684 | 801 | |
802 | s = gfc_state_stack->previous; | |
803 | if (s == NULL) | |
ee893be6 | 804 | goto end; |
4ee9c684 | 805 | |
806 | if (s->state != COMP_INTERFACE) | |
ee893be6 | 807 | goto end; |
4ee9c684 | 808 | if (s->sym == NULL) |
f6d0e37a | 809 | goto end; /* Nameless interface. */ |
4ee9c684 | 810 | |
811 | if (strcmp (name, s->sym->name) == 0) | |
812 | { | |
813 | *result = s->sym; | |
814 | return 0; | |
815 | } | |
816 | ||
ee893be6 | 817 | end: |
818 | return i; | |
4ee9c684 | 819 | } |
820 | ||
821 | ||
822 | /* Special subroutine for getting a symbol node associated with a | |
823 | procedure name, used in SUBROUTINE and FUNCTION statements. The | |
824 | symbol is created in the parent using with symtree node in the | |
825 | child unit pointing to the symbol. If the current namespace has no | |
826 | parent, then the symbol is just created in the current unit. */ | |
827 | ||
828 | static int | |
1a9745d2 | 829 | get_proc_name (const char *name, gfc_symbol **result, bool module_fcn_entry) |
4ee9c684 | 830 | { |
831 | gfc_symtree *st; | |
832 | gfc_symbol *sym; | |
2ddb8ed9 | 833 | int rc = 0; |
4ee9c684 | 834 | |
d77f260f | 835 | /* Module functions have to be left in their own namespace because |
836 | they have potentially (almost certainly!) already been referenced. | |
837 | In this sense, they are rather like external functions. This is | |
838 | fixed up in resolve.c(resolve_entries), where the symbol name- | |
839 | space is set to point to the master function, so that the fake | |
840 | result mechanism can work. */ | |
841 | if (module_fcn_entry) | |
861d824f | 842 | { |
843 | /* Present if entry is declared to be a module procedure. */ | |
844 | rc = gfc_find_symbol (name, gfc_current_ns->parent, 0, result); | |
c6a05992 | 845 | |
861d824f | 846 | if (*result == NULL) |
847 | rc = gfc_get_symbol (name, NULL, result); | |
a78f714d | 848 | else if (!gfc_get_symbol (name, NULL, &sym) && sym |
c6a05992 | 849 | && (*result)->ts.type == BT_UNKNOWN |
850 | && sym->attr.flavor == FL_UNKNOWN) | |
851 | /* Pick up the typespec for the entry, if declared in the function | |
852 | body. Note that this symbol is FL_UNKNOWN because it will | |
853 | only have appeared in a type declaration. The local symtree | |
854 | is set to point to the module symbol and a unique symtree | |
855 | to the local version. This latter ensures a correct clearing | |
856 | of the symbols. */ | |
a78f714d | 857 | { |
858 | /* If the ENTRY proceeds its specification, we need to ensure | |
859 | that this does not raise a "has no IMPLICIT type" error. */ | |
860 | if (sym->ts.type == BT_UNKNOWN) | |
2168078b | 861 | sym->attr.untyped = 1; |
a78f714d | 862 | |
2168078b | 863 | (*result)->ts = sym->ts; |
a78f714d | 864 | |
865 | /* Put the symbol in the procedure namespace so that, should | |
69b1505f | 866 | the ENTRY precede its specification, the specification |
a78f714d | 867 | can be applied. */ |
868 | (*result)->ns = gfc_current_ns; | |
869 | ||
870 | gfc_find_sym_tree (name, gfc_current_ns, 0, &st); | |
871 | st->n.sym = *result; | |
872 | st = gfc_get_unique_symtree (gfc_current_ns); | |
873 | st->n.sym = sym; | |
874 | } | |
861d824f | 875 | } |
858f9894 | 876 | else |
877 | rc = gfc_get_symbol (name, gfc_current_ns->parent, result); | |
4ee9c684 | 878 | |
2ddb8ed9 | 879 | if (rc) |
880 | return rc; | |
881 | ||
858f9894 | 882 | sym = *result; |
c717e399 | 883 | gfc_current_ns->refs++; |
4ee9c684 | 884 | |
c1977dbe | 885 | if (sym && !sym->gfc_new && gfc_current_state () != COMP_INTERFACE) |
858f9894 | 886 | { |
16f49153 | 887 | /* Trap another encompassed procedure with the same name. All |
888 | these conditions are necessary to avoid picking up an entry | |
889 | whose name clashes with that of the encompassing procedure; | |
890 | this is handled using gsymbols to register unique,globally | |
891 | accessible names. */ | |
858f9894 | 892 | if (sym->attr.flavor != 0 |
1a9745d2 | 893 | && sym->attr.proc != 0 |
894 | && (sym->attr.subroutine || sym->attr.function) | |
895 | && sym->attr.if_source != IFSRC_UNKNOWN) | |
858f9894 | 896 | gfc_error_now ("Procedure '%s' at %C is already defined at %L", |
897 | name, &sym->declared_at); | |
898 | ||
5720fd2f | 899 | /* Trap a procedure with a name the same as interface in the |
900 | encompassing scope. */ | |
901 | if (sym->attr.generic != 0 | |
db697236 | 902 | && (sym->attr.subroutine || sym->attr.function) |
903 | && !sym->attr.mod_proc) | |
5720fd2f | 904 | gfc_error_now ("Name '%s' at %C is already defined" |
905 | " as a generic interface at %L", | |
906 | name, &sym->declared_at); | |
907 | ||
858f9894 | 908 | /* Trap declarations of attributes in encompassing scope. The |
909 | signature for this is that ts.kind is set. Legitimate | |
910 | references only set ts.type. */ | |
911 | if (sym->ts.kind != 0 | |
1a9745d2 | 912 | && !sym->attr.implicit_type |
913 | && sym->attr.proc == 0 | |
914 | && gfc_current_ns->parent != NULL | |
915 | && sym->attr.access == 0 | |
916 | && !module_fcn_entry) | |
917 | gfc_error_now ("Procedure '%s' at %C has an explicit interface " | |
918 | "and must not have attributes declared at %L", | |
858f9894 | 919 | name, &sym->declared_at); |
920 | } | |
921 | ||
922 | if (gfc_current_ns->parent == NULL || *result == NULL) | |
923 | return rc; | |
4ee9c684 | 924 | |
d77f260f | 925 | /* Module function entries will already have a symtree in |
926 | the current namespace but will need one at module level. */ | |
927 | if (module_fcn_entry) | |
861d824f | 928 | { |
929 | /* Present if entry is declared to be a module procedure. */ | |
930 | rc = gfc_find_sym_tree (name, gfc_current_ns->parent, 0, &st); | |
931 | if (st == NULL) | |
932 | st = gfc_new_symtree (&gfc_current_ns->parent->sym_root, name); | |
933 | } | |
d77f260f | 934 | else |
935 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); | |
4ee9c684 | 936 | |
4ee9c684 | 937 | st->n.sym = sym; |
938 | sym->refs++; | |
939 | ||
f6d0e37a | 940 | /* See if the procedure should be a module procedure. */ |
4ee9c684 | 941 | |
d77f260f | 942 | if (((sym->ns->proc_name != NULL |
861d824f | 943 | && sym->ns->proc_name->attr.flavor == FL_MODULE |
944 | && sym->attr.proc != PROC_MODULE) | |
945 | || (module_fcn_entry && sym->attr.proc != PROC_MODULE)) | |
946 | && gfc_add_procedure (&sym->attr, PROC_MODULE, | |
947 | sym->name, NULL) == FAILURE) | |
4ee9c684 | 948 | rc = 2; |
949 | ||
950 | return rc; | |
951 | } | |
952 | ||
953 | ||
c5d33754 | 954 | /* Verify that the given symbol representing a parameter is C |
955 | interoperable, by checking to see if it was marked as such after | |
956 | its declaration. If the given symbol is not interoperable, a | |
957 | warning is reported, thus removing the need to return the status to | |
958 | the calling function. The standard does not require the user use | |
959 | one of the iso_c_binding named constants to declare an | |
960 | interoperable parameter, but we can't be sure if the param is C | |
961 | interop or not if the user doesn't. For example, integer(4) may be | |
962 | legal Fortran, but doesn't have meaning in C. It may interop with | |
963 | a number of the C types, which causes a problem because the | |
964 | compiler can't know which one. This code is almost certainly not | |
965 | portable, and the user will get what they deserve if the C type | |
966 | across platforms isn't always interoperable with integer(4). If | |
967 | the user had used something like integer(c_int) or integer(c_long), | |
968 | the compiler could have automatically handled the varying sizes | |
969 | across platforms. */ | |
970 | ||
f6bb8f4b | 971 | gfc_try |
2564c57a | 972 | gfc_verify_c_interop_param (gfc_symbol *sym) |
c5d33754 | 973 | { |
974 | int is_c_interop = 0; | |
f6bb8f4b | 975 | gfc_try retval = SUCCESS; |
c5d33754 | 976 | |
977 | /* We check implicitly typed variables in symbol.c:gfc_set_default_type(). | |
978 | Don't repeat the checks here. */ | |
979 | if (sym->attr.implicit_type) | |
980 | return SUCCESS; | |
981 | ||
982 | /* For subroutines or functions that are passed to a BIND(C) procedure, | |
983 | they're interoperable if they're BIND(C) and their params are all | |
984 | interoperable. */ | |
985 | if (sym->attr.flavor == FL_PROCEDURE) | |
986 | { | |
987 | if (sym->attr.is_bind_c == 0) | |
988 | { | |
989 | gfc_error_now ("Procedure '%s' at %L must have the BIND(C) " | |
990 | "attribute to be C interoperable", sym->name, | |
991 | &(sym->declared_at)); | |
992 | ||
993 | return FAILURE; | |
994 | } | |
995 | else | |
996 | { | |
997 | if (sym->attr.is_c_interop == 1) | |
998 | /* We've already checked this procedure; don't check it again. */ | |
999 | return SUCCESS; | |
1000 | else | |
1001 | return verify_bind_c_sym (sym, &(sym->ts), sym->attr.in_common, | |
1002 | sym->common_block); | |
1003 | } | |
1004 | } | |
1005 | ||
1006 | /* See if we've stored a reference to a procedure that owns sym. */ | |
1007 | if (sym->ns != NULL && sym->ns->proc_name != NULL) | |
1008 | { | |
1009 | if (sym->ns->proc_name->attr.is_bind_c == 1) | |
1010 | { | |
2564c57a | 1011 | is_c_interop = (gfc_verify_c_interop (&(sym->ts)) == SUCCESS ? 1 : 0); |
c5d33754 | 1012 | |
1013 | if (is_c_interop != 1) | |
1014 | { | |
1015 | /* Make personalized messages to give better feedback. */ | |
1016 | if (sym->ts.type == BT_DERIVED) | |
2564c57a | 1017 | gfc_error ("Variable '%s' at %L is a dummy argument to the " |
1018 | "BIND(C) procedure '%s' but is not C interoperable " | |
c5d33754 | 1019 | "because derived type '%s' is not C interoperable", |
1020 | sym->name, &(sym->declared_at), | |
1021 | sym->ns->proc_name->name, | |
eeebe20b | 1022 | sym->ts.u.derived->name); |
2564c57a | 1023 | else if (sym->ts.type == BT_CLASS) |
1024 | gfc_error ("Variable '%s' at %L is a dummy argument to the " | |
1025 | "BIND(C) procedure '%s' but is not C interoperable " | |
1026 | "because it is polymorphic", | |
1027 | sym->name, &(sym->declared_at), | |
1028 | sym->ns->proc_name->name); | |
c5d33754 | 1029 | else |
1030 | gfc_warning ("Variable '%s' at %L is a parameter to the " | |
1031 | "BIND(C) procedure '%s' but may not be C " | |
1032 | "interoperable", | |
1033 | sym->name, &(sym->declared_at), | |
1034 | sym->ns->proc_name->name); | |
1035 | } | |
e4eda3ec | 1036 | |
1037 | /* Character strings are only C interoperable if they have a | |
1038 | length of 1. */ | |
1039 | if (sym->ts.type == BT_CHARACTER) | |
1040 | { | |
eeebe20b | 1041 | gfc_charlen *cl = sym->ts.u.cl; |
e4eda3ec | 1042 | if (!cl || !cl->length || cl->length->expr_type != EXPR_CONSTANT |
1043 | || mpz_cmp_si (cl->length->value.integer, 1) != 0) | |
1044 | { | |
1045 | gfc_error ("Character argument '%s' at %L " | |
1046 | "must be length 1 because " | |
1047 | "procedure '%s' is BIND(C)", | |
1048 | sym->name, &sym->declared_at, | |
1049 | sym->ns->proc_name->name); | |
1050 | retval = FAILURE; | |
1051 | } | |
1052 | } | |
1053 | ||
c5d33754 | 1054 | /* We have to make sure that any param to a bind(c) routine does |
1055 | not have the allocatable, pointer, or optional attributes, | |
1056 | according to J3/04-007, section 5.1. */ | |
1057 | if (sym->attr.allocatable == 1) | |
1058 | { | |
1059 | gfc_error ("Variable '%s' at %L cannot have the " | |
1060 | "ALLOCATABLE attribute because procedure '%s'" | |
1061 | " is BIND(C)", sym->name, &(sym->declared_at), | |
1062 | sym->ns->proc_name->name); | |
1063 | retval = FAILURE; | |
1064 | } | |
1065 | ||
1066 | if (sym->attr.pointer == 1) | |
1067 | { | |
1068 | gfc_error ("Variable '%s' at %L cannot have the " | |
1069 | "POINTER attribute because procedure '%s'" | |
1070 | " is BIND(C)", sym->name, &(sym->declared_at), | |
1071 | sym->ns->proc_name->name); | |
1072 | retval = FAILURE; | |
1073 | } | |
1074 | ||
495e197c | 1075 | if (sym->attr.optional == 1 && sym->attr.value) |
c5d33754 | 1076 | { |
495e197c | 1077 | gfc_error ("Variable '%s' at %L cannot have both the OPTIONAL " |
1078 | "and the VALUE attribute because procedure '%s' " | |
1079 | "is BIND(C)", sym->name, &(sym->declared_at), | |
c5d33754 | 1080 | sym->ns->proc_name->name); |
1081 | retval = FAILURE; | |
1082 | } | |
495e197c | 1083 | else if (sym->attr.optional == 1 |
d976af8e | 1084 | && gfc_notify_std (GFC_STD_F2008_TS, "TS29113: Variable '%s' " |
495e197c | 1085 | "at %L with OPTIONAL attribute in " |
1086 | "procedure '%s' which is BIND(C)", | |
1087 | sym->name, &(sym->declared_at), | |
1088 | sym->ns->proc_name->name) | |
1089 | == FAILURE) | |
1090 | retval = FAILURE; | |
c5d33754 | 1091 | |
1092 | /* Make sure that if it has the dimension attribute, that it is | |
1093 | either assumed size or explicit shape. */ | |
1094 | if (sym->as != NULL) | |
1095 | { | |
1096 | if (sym->as->type == AS_ASSUMED_SHAPE) | |
1097 | { | |
1098 | gfc_error ("Assumed-shape array '%s' at %L cannot be an " | |
1099 | "argument to the procedure '%s' at %L because " | |
1100 | "the procedure is BIND(C)", sym->name, | |
1101 | &(sym->declared_at), sym->ns->proc_name->name, | |
1102 | &(sym->ns->proc_name->declared_at)); | |
1103 | retval = FAILURE; | |
1104 | } | |
1105 | ||
1106 | if (sym->as->type == AS_DEFERRED) | |
1107 | { | |
1108 | gfc_error ("Deferred-shape array '%s' at %L cannot be an " | |
1109 | "argument to the procedure '%s' at %L because " | |
1110 | "the procedure is BIND(C)", sym->name, | |
1111 | &(sym->declared_at), sym->ns->proc_name->name, | |
1112 | &(sym->ns->proc_name->declared_at)); | |
1113 | retval = FAILURE; | |
1114 | } | |
1115 | } | |
1116 | } | |
1117 | } | |
1118 | ||
1119 | return retval; | |
1120 | } | |
1121 | ||
1122 | ||
1de1b1a9 | 1123 | |
c5d33754 | 1124 | /* Function called by variable_decl() that adds a name to the symbol table. */ |
4ee9c684 | 1125 | |
f6bb8f4b | 1126 | static gfc_try |
3e715c81 | 1127 | build_sym (const char *name, gfc_charlen *cl, bool cl_deferred, |
1a9745d2 | 1128 | gfc_array_spec **as, locus *var_locus) |
4ee9c684 | 1129 | { |
1130 | symbol_attribute attr; | |
1131 | gfc_symbol *sym; | |
1132 | ||
ee893be6 | 1133 | if (gfc_get_symbol (name, NULL, &sym)) |
4ee9c684 | 1134 | return FAILURE; |
1135 | ||
f6d0e37a | 1136 | /* Start updating the symbol table. Add basic type attribute if present. */ |
4ee9c684 | 1137 | if (current_ts.type != BT_UNKNOWN |
1a9745d2 | 1138 | && (sym->attr.implicit_type == 0 |
1139 | || !gfc_compare_types (&sym->ts, ¤t_ts)) | |
4ee9c684 | 1140 | && gfc_add_type (sym, ¤t_ts, var_locus) == FAILURE) |
1141 | return FAILURE; | |
1142 | ||
1143 | if (sym->ts.type == BT_CHARACTER) | |
3e715c81 | 1144 | { |
1145 | sym->ts.u.cl = cl; | |
1146 | sym->ts.deferred = cl_deferred; | |
1147 | } | |
4ee9c684 | 1148 | |
1149 | /* Add dimension attribute if present. */ | |
1150 | if (gfc_set_array_spec (sym, *as, var_locus) == FAILURE) | |
1151 | return FAILURE; | |
1152 | *as = NULL; | |
1153 | ||
1154 | /* Add attribute to symbol. The copy is so that we can reset the | |
1155 | dimension attribute. */ | |
1156 | attr = current_attr; | |
1157 | attr.dimension = 0; | |
aff518b0 | 1158 | attr.codimension = 0; |
4ee9c684 | 1159 | |
1160 | if (gfc_copy_attr (&sym->attr, &attr, var_locus) == FAILURE) | |
1161 | return FAILURE; | |
1162 | ||
c5d33754 | 1163 | /* Finish any work that may need to be done for the binding label, |
1164 | if it's a bind(c). The bind(c) attr is found before the symbol | |
1165 | is made, and before the symbol name (for data decls), so the | |
1166 | current_ts is holding the binding label, or nothing if the | |
1167 | name= attr wasn't given. Therefore, test here if we're dealing | |
1168 | with a bind(c) and make sure the binding label is set correctly. */ | |
1169 | if (sym->attr.is_bind_c == 1) | |
1170 | { | |
7b2060ba | 1171 | if (!sym->binding_label) |
c5d33754 | 1172 | { |
825718f9 | 1173 | /* Set the binding label and verify that if a NAME= was specified |
1174 | then only one identifier was in the entity-decl-list. */ | |
7b2060ba | 1175 | if (set_binding_label (&sym->binding_label, sym->name, |
825718f9 | 1176 | num_idents_on_line) == FAILURE) |
c5d33754 | 1177 | return FAILURE; |
1178 | } | |
1179 | } | |
1180 | ||
1181 | /* See if we know we're in a common block, and if it's a bind(c) | |
1182 | common then we need to make sure we're an interoperable type. */ | |
1183 | if (sym->attr.in_common == 1) | |
1184 | { | |
1185 | /* Test the common block object. */ | |
1186 | if (sym->common_block != NULL && sym->common_block->is_bind_c == 1 | |
1187 | && sym->ts.is_c_interop != 1) | |
1188 | { | |
1189 | gfc_error_now ("Variable '%s' in common block '%s' at %C " | |
1190 | "must be declared with a C interoperable " | |
1191 | "kind since common block '%s' is BIND(C)", | |
1192 | sym->name, sym->common_block->name, | |
1193 | sym->common_block->name); | |
1194 | gfc_clear_error (); | |
1195 | } | |
1196 | } | |
1197 | ||
2457a77e | 1198 | sym->attr.implied_index = 0; |
1199 | ||
fa102e56 | 1200 | if (sym->ts.type == BT_CLASS) |
29dae2bf | 1201 | return gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as, false); |
1de1b1a9 | 1202 | |
4ee9c684 | 1203 | return SUCCESS; |
1204 | } | |
1205 | ||
1a9745d2 | 1206 | |
a270dc8e | 1207 | /* Set character constant to the given length. The constant will be padded or |
d1a39099 | 1208 | truncated. If we're inside an array constructor without a typespec, we |
1209 | additionally check that all elements have the same length; check_len -1 | |
1210 | means no checking. */ | |
a270dc8e | 1211 | |
1212 | void | |
d1a39099 | 1213 | gfc_set_constant_character_len (int len, gfc_expr *expr, int check_len) |
a270dc8e | 1214 | { |
c32f863c | 1215 | gfc_char_t *s; |
a270dc8e | 1216 | int slen; |
1217 | ||
1218 | gcc_assert (expr->expr_type == EXPR_CONSTANT); | |
b44437b9 | 1219 | gcc_assert (expr->ts.type == BT_CHARACTER); |
a270dc8e | 1220 | |
1221 | slen = expr->value.character.length; | |
1222 | if (len != slen) | |
1223 | { | |
c32f863c | 1224 | s = gfc_get_wide_string (len + 1); |
1225 | memcpy (s, expr->value.character.string, | |
1226 | MIN (len, slen) * sizeof (gfc_char_t)); | |
a270dc8e | 1227 | if (len > slen) |
c32f863c | 1228 | gfc_wide_memset (&s[slen], ' ', len - slen); |
1bfea7e8 | 1229 | |
1230 | if (gfc_option.warn_character_truncation && slen > len) | |
1231 | gfc_warning_now ("CHARACTER expression at %L is being truncated " | |
1232 | "(%d/%d)", &expr->where, slen, len); | |
1233 | ||
1234 | /* Apply the standard by 'hand' otherwise it gets cleared for | |
1235 | initializers. */ | |
d1a39099 | 1236 | if (check_len != -1 && slen != check_len |
1237 | && !(gfc_option.allow_std & GFC_STD_GNU)) | |
1bfea7e8 | 1238 | gfc_error_now ("The CHARACTER elements of the array constructor " |
1239 | "at %L must have the same length (%d/%d)", | |
d1a39099 | 1240 | &expr->where, slen, check_len); |
1bfea7e8 | 1241 | |
89f528df | 1242 | s[len] = '\0'; |
434f0922 | 1243 | free (expr->value.character.string); |
a270dc8e | 1244 | expr->value.character.string = s; |
1245 | expr->value.character.length = len; | |
1246 | } | |
1247 | } | |
4ee9c684 | 1248 | |
3b6a4b41 | 1249 | |
e14bee04 | 1250 | /* Function to create and update the enumerator history |
3b6a4b41 | 1251 | using the information passed as arguments. |
e14bee04 | 1252 | Pointer "max_enum" is also updated, to point to |
1253 | enum history node containing largest initializer. | |
3b6a4b41 | 1254 | |
1255 | SYM points to the symbol node of enumerator. | |
f6d0e37a | 1256 | INIT points to its enumerator value. */ |
3b6a4b41 | 1257 | |
e14bee04 | 1258 | static void |
1a9745d2 | 1259 | create_enum_history (gfc_symbol *sym, gfc_expr *init) |
3b6a4b41 | 1260 | { |
1261 | enumerator_history *new_enum_history; | |
1262 | gcc_assert (sym != NULL && init != NULL); | |
1263 | ||
48d8ad5a | 1264 | new_enum_history = XCNEW (enumerator_history); |
3b6a4b41 | 1265 | |
1266 | new_enum_history->sym = sym; | |
1267 | new_enum_history->initializer = init; | |
1268 | new_enum_history->next = NULL; | |
1269 | ||
1270 | if (enum_history == NULL) | |
1271 | { | |
1272 | enum_history = new_enum_history; | |
1273 | max_enum = enum_history; | |
1274 | } | |
1275 | else | |
1276 | { | |
1277 | new_enum_history->next = enum_history; | |
1278 | enum_history = new_enum_history; | |
1279 | ||
e14bee04 | 1280 | if (mpz_cmp (max_enum->initializer->value.integer, |
3b6a4b41 | 1281 | new_enum_history->initializer->value.integer) < 0) |
1a9745d2 | 1282 | max_enum = new_enum_history; |
3b6a4b41 | 1283 | } |
1284 | } | |
1285 | ||
1286 | ||
e14bee04 | 1287 | /* Function to free enum kind history. */ |
3b6a4b41 | 1288 | |
e14bee04 | 1289 | void |
1a9745d2 | 1290 | gfc_free_enum_history (void) |
3b6a4b41 | 1291 | { |
e14bee04 | 1292 | enumerator_history *current = enum_history; |
1293 | enumerator_history *next; | |
3b6a4b41 | 1294 | |
1295 | while (current != NULL) | |
1296 | { | |
1297 | next = current->next; | |
434f0922 | 1298 | free (current); |
3b6a4b41 | 1299 | current = next; |
1300 | } | |
1301 | max_enum = NULL; | |
1302 | enum_history = NULL; | |
1303 | } | |
1304 | ||
1305 | ||
4ee9c684 | 1306 | /* Function called by variable_decl() that adds an initialization |
1307 | expression to a symbol. */ | |
1308 | ||
f6bb8f4b | 1309 | static gfc_try |
f6d0e37a | 1310 | add_init_expr_to_sym (const char *name, gfc_expr **initp, locus *var_locus) |
4ee9c684 | 1311 | { |
1312 | symbol_attribute attr; | |
1313 | gfc_symbol *sym; | |
1314 | gfc_expr *init; | |
1315 | ||
1316 | init = *initp; | |
36b0a1b0 | 1317 | if (find_special (name, &sym, false)) |
4ee9c684 | 1318 | return FAILURE; |
1319 | ||
1320 | attr = sym->attr; | |
1321 | ||
1322 | /* If this symbol is confirming an implicit parameter type, | |
1323 | then an initialization expression is not allowed. */ | |
1324 | if (attr.flavor == FL_PARAMETER | |
1325 | && sym->value != NULL | |
1326 | && *initp != NULL) | |
1327 | { | |
1328 | gfc_error ("Initializer not allowed for PARAMETER '%s' at %C", | |
1329 | sym->name); | |
1330 | return FAILURE; | |
1331 | } | |
1332 | ||
1333 | if (init == NULL) | |
1334 | { | |
1335 | /* An initializer is required for PARAMETER declarations. */ | |
1336 | if (attr.flavor == FL_PARAMETER) | |
1337 | { | |
1338 | gfc_error ("PARAMETER at %L is missing an initializer", var_locus); | |
1339 | return FAILURE; | |
1340 | } | |
1341 | } | |
1342 | else | |
1343 | { | |
1344 | /* If a variable appears in a DATA block, it cannot have an | |
b97f1a18 | 1345 | initializer. */ |
4ee9c684 | 1346 | if (sym->attr.data) |
1347 | { | |
1a9745d2 | 1348 | gfc_error ("Variable '%s' at %C with an initializer already " |
1349 | "appears in a DATA statement", sym->name); | |
4ee9c684 | 1350 | return FAILURE; |
1351 | } | |
1352 | ||
cca3db55 | 1353 | /* Check if the assignment can happen. This has to be put off |
23d075f4 | 1354 | until later for derived type variables and procedure pointers. */ |
4ee9c684 | 1355 | if (sym->ts.type != BT_DERIVED && init->ts.type != BT_DERIVED |
1de1b1a9 | 1356 | && sym->ts.type != BT_CLASS && init->ts.type != BT_CLASS |
23d075f4 | 1357 | && !sym->attr.proc_pointer |
4ee9c684 | 1358 | && gfc_check_assign_symbol (sym, init) == FAILURE) |
1359 | return FAILURE; | |
1360 | ||
eeebe20b | 1361 | if (sym->ts.type == BT_CHARACTER && sym->ts.u.cl |
da540712 | 1362 | && init->ts.type == BT_CHARACTER) |
a270dc8e | 1363 | { |
1364 | /* Update symbol character length according initializer. */ | |
da540712 | 1365 | if (gfc_check_assign_symbol (sym, init) == FAILURE) |
1366 | return FAILURE; | |
1367 | ||
eeebe20b | 1368 | if (sym->ts.u.cl->length == NULL) |
a270dc8e | 1369 | { |
03c2a028 | 1370 | int clen; |
f6d0e37a | 1371 | /* If there are multiple CHARACTER variables declared on the |
1372 | same line, we don't want them to share the same length. */ | |
d270ce52 | 1373 | sym->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
e9c873a4 | 1374 | |
03c2a028 | 1375 | if (sym->attr.flavor == FL_PARAMETER) |
1376 | { | |
1377 | if (init->expr_type == EXPR_CONSTANT) | |
1378 | { | |
1379 | clen = init->value.character.length; | |
126387b5 | 1380 | sym->ts.u.cl->length |
1381 | = gfc_get_int_expr (gfc_default_integer_kind, | |
1382 | NULL, clen); | |
03c2a028 | 1383 | } |
1384 | else if (init->expr_type == EXPR_ARRAY) | |
1385 | { | |
126387b5 | 1386 | gfc_constructor *c; |
1387 | c = gfc_constructor_first (init->value.constructor); | |
1388 | clen = c->expr->value.character.length; | |
1389 | sym->ts.u.cl->length | |
1390 | = gfc_get_int_expr (gfc_default_integer_kind, | |
1391 | NULL, clen); | |
03c2a028 | 1392 | } |
eeebe20b | 1393 | else if (init->ts.u.cl && init->ts.u.cl->length) |
1394 | sym->ts.u.cl->length = | |
1395 | gfc_copy_expr (sym->value->ts.u.cl->length); | |
03c2a028 | 1396 | } |
a270dc8e | 1397 | } |
1398 | /* Update initializer character length according symbol. */ | |
eeebe20b | 1399 | else if (sym->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
a270dc8e | 1400 | { |
eeebe20b | 1401 | int len = mpz_get_si (sym->ts.u.cl->length->value.integer); |
a270dc8e | 1402 | |
1403 | if (init->expr_type == EXPR_CONSTANT) | |
d1a39099 | 1404 | gfc_set_constant_character_len (len, init, -1); |
a270dc8e | 1405 | else if (init->expr_type == EXPR_ARRAY) |
1406 | { | |
126387b5 | 1407 | gfc_constructor *c; |
1408 | ||
39908fd9 | 1409 | /* Build a new charlen to prevent simplification from |
1410 | deleting the length before it is resolved. */ | |
d270ce52 | 1411 | init->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
eeebe20b | 1412 | init->ts.u.cl->length = gfc_copy_expr (sym->ts.u.cl->length); |
39908fd9 | 1413 | |
126387b5 | 1414 | for (c = gfc_constructor_first (init->value.constructor); |
1415 | c; c = gfc_constructor_next (c)) | |
1416 | gfc_set_constant_character_len (len, c->expr, -1); | |
a270dc8e | 1417 | } |
1418 | } | |
1419 | } | |
1420 | ||
ae2864a8 | 1421 | /* If sym is implied-shape, set its upper bounds from init. */ |
1422 | if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension | |
1423 | && sym->as->type == AS_IMPLIED_SHAPE) | |
1424 | { | |
1425 | int dim; | |
1426 | ||
1427 | if (init->rank == 0) | |
1428 | { | |
1429 | gfc_error ("Can't initialize implied-shape array at %L" | |
1430 | " with scalar", &sym->declared_at); | |
1431 | return FAILURE; | |
1432 | } | |
1433 | gcc_assert (sym->as->rank == init->rank); | |
1434 | ||
1435 | /* Shape should be present, we get an initialization expression. */ | |
1436 | gcc_assert (init->shape); | |
1437 | ||
1438 | for (dim = 0; dim < sym->as->rank; ++dim) | |
1439 | { | |
1440 | int k; | |
1441 | gfc_expr* lower; | |
1442 | gfc_expr* e; | |
1443 | ||
1444 | lower = sym->as->lower[dim]; | |
1445 | if (lower->expr_type != EXPR_CONSTANT) | |
1446 | { | |
1447 | gfc_error ("Non-constant lower bound in implied-shape" | |
1448 | " declaration at %L", &lower->where); | |
1449 | return FAILURE; | |
1450 | } | |
1451 | ||
1452 | /* All dimensions must be without upper bound. */ | |
1453 | gcc_assert (!sym->as->upper[dim]); | |
1454 | ||
1455 | k = lower->ts.kind; | |
1456 | e = gfc_get_constant_expr (BT_INTEGER, k, &sym->declared_at); | |
1457 | mpz_add (e->value.integer, | |
1458 | lower->value.integer, init->shape[dim]); | |
1459 | mpz_sub_ui (e->value.integer, e->value.integer, 1); | |
1460 | sym->as->upper[dim] = e; | |
1461 | } | |
1462 | ||
1463 | sym->as->type = AS_EXPLICIT; | |
1464 | } | |
1465 | ||
c5d33754 | 1466 | /* Need to check if the expression we initialized this |
1467 | to was one of the iso_c_binding named constants. If so, | |
1468 | and we're a parameter (constant), let it be iso_c. | |
1469 | For example: | |
1470 | integer(c_int), parameter :: my_int = c_int | |
1471 | integer(my_int) :: my_int_2 | |
1472 | If we mark my_int as iso_c (since we can see it's value | |
1473 | is equal to one of the named constants), then my_int_2 | |
1474 | will be considered C interoperable. */ | |
1475 | if (sym->ts.type != BT_CHARACTER && sym->ts.type != BT_DERIVED) | |
1476 | { | |
1477 | sym->ts.is_iso_c |= init->ts.is_iso_c; | |
1478 | sym->ts.is_c_interop |= init->ts.is_c_interop; | |
1479 | /* attr bits needed for module files. */ | |
1480 | sym->attr.is_iso_c |= init->ts.is_iso_c; | |
1481 | sym->attr.is_c_interop |= init->ts.is_c_interop; | |
1482 | if (init->ts.is_iso_c) | |
1483 | sym->ts.f90_type = init->ts.f90_type; | |
1484 | } | |
126387b5 | 1485 | |
4ee9c684 | 1486 | /* Add initializer. Make sure we keep the ranks sane. */ |
1487 | if (sym->attr.dimension && init->rank == 0) | |
7baa3fb4 | 1488 | { |
1489 | mpz_t size; | |
1490 | gfc_expr *array; | |
7baa3fb4 | 1491 | int n; |
1492 | if (sym->attr.flavor == FL_PARAMETER | |
1493 | && init->expr_type == EXPR_CONSTANT | |
1494 | && spec_size (sym->as, &size) == SUCCESS | |
1495 | && mpz_cmp_si (size, 0) > 0) | |
1496 | { | |
126387b5 | 1497 | array = gfc_get_array_expr (init->ts.type, init->ts.kind, |
1498 | &init->where); | |
7baa3fb4 | 1499 | for (n = 0; n < (int)mpz_get_si (size); n++) |
126387b5 | 1500 | gfc_constructor_append_expr (&array->value.constructor, |
1501 | n == 0 | |
1502 | ? init | |
1503 | : gfc_copy_expr (init), | |
1504 | &init->where); | |
1505 | ||
7baa3fb4 | 1506 | array->shape = gfc_get_shape (sym->as->rank); |
1507 | for (n = 0; n < sym->as->rank; n++) | |
1508 | spec_dimen_size (sym->as, n, &array->shape[n]); | |
1509 | ||
1510 | init = array; | |
1511 | mpz_clear (size); | |
1512 | } | |
1513 | init->rank = sym->as->rank; | |
1514 | } | |
4ee9c684 | 1515 | |
1516 | sym->value = init; | |
3cd3c667 | 1517 | if (sym->attr.save == SAVE_NONE) |
1518 | sym->attr.save = SAVE_IMPLICIT; | |
4ee9c684 | 1519 | *initp = NULL; |
1520 | } | |
1521 | ||
1522 | return SUCCESS; | |
1523 | } | |
1524 | ||
1525 | ||
1526 | /* Function called by variable_decl() that adds a name to a structure | |
1527 | being built. */ | |
1528 | ||
f6bb8f4b | 1529 | static gfc_try |
1a9745d2 | 1530 | build_struct (const char *name, gfc_charlen *cl, gfc_expr **init, |
1531 | gfc_array_spec **as) | |
4ee9c684 | 1532 | { |
1533 | gfc_component *c; | |
b3704193 | 1534 | gfc_try t = SUCCESS; |
4ee9c684 | 1535 | |
53d2e124 | 1536 | /* F03:C438/C439. If the current symbol is of the same derived type that we're |
4ee9c684 | 1537 | constructing, it must have the pointer attribute. */ |
53d2e124 | 1538 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
eeebe20b | 1539 | && current_ts.u.derived == gfc_current_block () |
4ee9c684 | 1540 | && current_attr.pointer == 0) |
1541 | { | |
1542 | gfc_error ("Component at %C must have the POINTER attribute"); | |
1543 | return FAILURE; | |
1544 | } | |
1545 | ||
1a9745d2 | 1546 | if (gfc_current_block ()->attr.pointer && (*as)->rank != 0) |
4ee9c684 | 1547 | { |
1548 | if ((*as)->type != AS_DEFERRED && (*as)->type != AS_EXPLICIT) | |
1549 | { | |
1550 | gfc_error ("Array component of structure at %C must have explicit " | |
1551 | "or deferred shape"); | |
1552 | return FAILURE; | |
1553 | } | |
1554 | } | |
1555 | ||
1556 | if (gfc_add_component (gfc_current_block (), name, &c) == FAILURE) | |
1557 | return FAILURE; | |
1558 | ||
1559 | c->ts = current_ts; | |
eeebe20b | 1560 | if (c->ts.type == BT_CHARACTER) |
1561 | c->ts.u.cl = cl; | |
3be2b8d5 | 1562 | c->attr = current_attr; |
4ee9c684 | 1563 | |
1564 | c->initializer = *init; | |
1565 | *init = NULL; | |
1566 | ||
1567 | c->as = *as; | |
1568 | if (c->as != NULL) | |
aff518b0 | 1569 | { |
1570 | if (c->as->corank) | |
1571 | c->attr.codimension = 1; | |
1572 | if (c->as->rank) | |
1573 | c->attr.dimension = 1; | |
1574 | } | |
4ee9c684 | 1575 | *as = NULL; |
1576 | ||
a2f51d5f | 1577 | /* Should this ever get more complicated, combine with similar section |
1578 | in add_init_expr_to_sym into a separate function. */ | |
2d76519f | 1579 | if (c->ts.type == BT_CHARACTER && !c->attr.pointer && c->initializer |
1580 | && c->ts.u.cl | |
eeebe20b | 1581 | && c->ts.u.cl->length && c->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
a2f51d5f | 1582 | { |
d1a39099 | 1583 | int len; |
1584 | ||
eeebe20b | 1585 | gcc_assert (c->ts.u.cl && c->ts.u.cl->length); |
1586 | gcc_assert (c->ts.u.cl->length->expr_type == EXPR_CONSTANT); | |
1587 | gcc_assert (c->ts.u.cl->length->ts.type == BT_INTEGER); | |
d1a39099 | 1588 | |
eeebe20b | 1589 | len = mpz_get_si (c->ts.u.cl->length->value.integer); |
a2f51d5f | 1590 | |
1591 | if (c->initializer->expr_type == EXPR_CONSTANT) | |
d1a39099 | 1592 | gfc_set_constant_character_len (len, c->initializer, -1); |
eeebe20b | 1593 | else if (mpz_cmp (c->ts.u.cl->length->value.integer, |
1594 | c->initializer->ts.u.cl->length->value.integer)) | |
a2f51d5f | 1595 | { |
126387b5 | 1596 | gfc_constructor *ctor; |
1597 | ctor = gfc_constructor_first (c->initializer->value.constructor); | |
d1a39099 | 1598 | |
6e4faf80 | 1599 | if (ctor) |
d1a39099 | 1600 | { |
6e4faf80 | 1601 | int first_len; |
126387b5 | 1602 | bool has_ts = (c->initializer->ts.u.cl |
1603 | && c->initializer->ts.u.cl->length_from_typespec); | |
6e4faf80 | 1604 | |
1605 | /* Remember the length of the first element for checking | |
1606 | that all elements *in the constructor* have the same | |
1607 | length. This need not be the length of the LHS! */ | |
1608 | gcc_assert (ctor->expr->expr_type == EXPR_CONSTANT); | |
1609 | gcc_assert (ctor->expr->ts.type == BT_CHARACTER); | |
1610 | first_len = ctor->expr->value.character.length; | |
1611 | ||
126387b5 | 1612 | for ( ; ctor; ctor = gfc_constructor_next (ctor)) |
1613 | if (ctor->expr->expr_type == EXPR_CONSTANT) | |
d1a39099 | 1614 | { |
126387b5 | 1615 | gfc_set_constant_character_len (len, ctor->expr, |
1616 | has_ts ? -1 : first_len); | |
1617 | ctor->expr->ts.u.cl->length = gfc_copy_expr (c->ts.u.cl->length); | |
d1a39099 | 1618 | } |
d1a39099 | 1619 | } |
a2f51d5f | 1620 | } |
1621 | } | |
1622 | ||
4ee9c684 | 1623 | /* Check array components. */ |
3be2b8d5 | 1624 | if (!c->attr.dimension) |
b3704193 | 1625 | goto scalar; |
4ee9c684 | 1626 | |
3be2b8d5 | 1627 | if (c->attr.pointer) |
4ee9c684 | 1628 | { |
1629 | if (c->as->type != AS_DEFERRED) | |
1630 | { | |
2294b616 | 1631 | gfc_error ("Pointer array component of structure at %C must have a " |
1632 | "deferred shape"); | |
b3704193 | 1633 | t = FAILURE; |
2294b616 | 1634 | } |
1635 | } | |
3be2b8d5 | 1636 | else if (c->attr.allocatable) |
2294b616 | 1637 | { |
1638 | if (c->as->type != AS_DEFERRED) | |
1639 | { | |
1640 | gfc_error ("Allocatable component of structure at %C must have a " | |
1641 | "deferred shape"); | |
b3704193 | 1642 | t = FAILURE; |
4ee9c684 | 1643 | } |
1644 | } | |
1645 | else | |
1646 | { | |
1647 | if (c->as->type != AS_EXPLICIT) | |
1648 | { | |
1a9745d2 | 1649 | gfc_error ("Array component of structure at %C must have an " |
1650 | "explicit shape"); | |
b3704193 | 1651 | t = FAILURE; |
4ee9c684 | 1652 | } |
1653 | } | |
1654 | ||
b3704193 | 1655 | scalar: |
1656 | if (c->ts.type == BT_CLASS) | |
d9c9afea | 1657 | { |
1658 | bool delayed = (gfc_state_stack->sym == c->ts.u.derived) | |
1659 | || (!c->ts.u.derived->components | |
1660 | && !c->ts.u.derived->attr.zero_comp); | |
29dae2bf | 1661 | return gfc_build_class_symbol (&c->ts, &c->attr, &c->as, delayed); |
d9c9afea | 1662 | } |
1663 | ||
b3704193 | 1664 | return t; |
4ee9c684 | 1665 | } |
1666 | ||
1667 | ||
1668 | /* Match a 'NULL()', and possibly take care of some side effects. */ | |
1669 | ||
1670 | match | |
1a9745d2 | 1671 | gfc_match_null (gfc_expr **result) |
4ee9c684 | 1672 | { |
1673 | gfc_symbol *sym; | |
4ee9c684 | 1674 | match m; |
1675 | ||
1676 | m = gfc_match (" null ( )"); | |
1677 | if (m != MATCH_YES) | |
1678 | return m; | |
1679 | ||
1680 | /* The NULL symbol now has to be/become an intrinsic function. */ | |
1681 | if (gfc_get_symbol ("null", NULL, &sym)) | |
1682 | { | |
1683 | gfc_error ("NULL() initialization at %C is ambiguous"); | |
1684 | return MATCH_ERROR; | |
1685 | } | |
1686 | ||
1687 | gfc_intrinsic_symbol (sym); | |
1688 | ||
1689 | if (sym->attr.proc != PROC_INTRINSIC | |
950683ed | 1690 | && (gfc_add_procedure (&sym->attr, PROC_INTRINSIC, |
1691 | sym->name, NULL) == FAILURE | |
1692 | || gfc_add_function (&sym->attr, sym->name, NULL) == FAILURE)) | |
4ee9c684 | 1693 | return MATCH_ERROR; |
1694 | ||
126387b5 | 1695 | *result = gfc_get_null_expr (&gfc_current_locus); |
4ee9c684 | 1696 | |
1697 | return MATCH_YES; | |
1698 | } | |
1699 | ||
1700 | ||
23d075f4 | 1701 | /* Match the initialization expr for a data pointer or procedure pointer. */ |
1702 | ||
1703 | static match | |
1704 | match_pointer_init (gfc_expr **init, int procptr) | |
1705 | { | |
1706 | match m; | |
1707 | ||
1708 | if (gfc_pure (NULL) && gfc_state_stack->state != COMP_DERIVED) | |
1709 | { | |
1710 | gfc_error ("Initialization of pointer at %C is not allowed in " | |
1711 | "a PURE procedure"); | |
1712 | return MATCH_ERROR; | |
1713 | } | |
1714 | ||
1715 | /* Match NULL() initilization. */ | |
1716 | m = gfc_match_null (init); | |
1717 | if (m != MATCH_NO) | |
1718 | return m; | |
1719 | ||
1720 | /* Match non-NULL initialization. */ | |
f3efaada | 1721 | gfc_matching_ptr_assignment = !procptr; |
23d075f4 | 1722 | gfc_matching_procptr_assignment = procptr; |
1723 | m = gfc_match_rvalue (init); | |
f3efaada | 1724 | gfc_matching_ptr_assignment = 0; |
23d075f4 | 1725 | gfc_matching_procptr_assignment = 0; |
1726 | if (m == MATCH_ERROR) | |
1727 | return MATCH_ERROR; | |
1728 | else if (m == MATCH_NO) | |
1729 | { | |
1730 | gfc_error ("Error in pointer initialization at %C"); | |
1731 | return MATCH_ERROR; | |
1732 | } | |
1733 | ||
1734 | if (!procptr) | |
1735 | gfc_resolve_expr (*init); | |
1736 | ||
1737 | if (gfc_notify_std (GFC_STD_F2008, "Fortran 2008: non-NULL pointer " | |
1738 | "initialization at %C") == FAILURE) | |
1739 | return MATCH_ERROR; | |
1740 | ||
1741 | return MATCH_YES; | |
1742 | } | |
1743 | ||
1744 | ||
f3e89339 | 1745 | static gfc_try |
1746 | check_function_name (char *name) | |
1747 | { | |
1748 | /* In functions that have a RESULT variable defined, the function name always | |
1749 | refers to function calls. Therefore, the name is not allowed to appear in | |
1750 | specification statements. When checking this, be careful about | |
1751 | 'hidden' procedure pointer results ('ppr@'). */ | |
1752 | ||
1753 | if (gfc_current_state () == COMP_FUNCTION) | |
1754 | { | |
1755 | gfc_symbol *block = gfc_current_block (); | |
1756 | if (block && block->result && block->result != block | |
1757 | && strcmp (block->result->name, "ppr@") != 0 | |
1758 | && strcmp (block->name, name) == 0) | |
1759 | { | |
1760 | gfc_error ("Function name '%s' not allowed at %C", name); | |
1761 | return FAILURE; | |
1762 | } | |
1763 | } | |
1764 | ||
1765 | return SUCCESS; | |
1766 | } | |
1767 | ||
1768 | ||
4ee9c684 | 1769 | /* Match a variable name with an optional initializer. When this |
1770 | subroutine is called, a variable is expected to be parsed next. | |
1771 | Depending on what is happening at the moment, updates either the | |
1772 | symbol table or the current interface. */ | |
1773 | ||
1774 | static match | |
3923b69f | 1775 | variable_decl (int elem) |
4ee9c684 | 1776 | { |
1777 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
1778 | gfc_expr *initializer, *char_len; | |
1779 | gfc_array_spec *as; | |
b549d2a5 | 1780 | gfc_array_spec *cp_as; /* Extra copy for Cray Pointees. */ |
4ee9c684 | 1781 | gfc_charlen *cl; |
3e715c81 | 1782 | bool cl_deferred; |
4ee9c684 | 1783 | locus var_locus; |
1784 | match m; | |
f6bb8f4b | 1785 | gfc_try t; |
b549d2a5 | 1786 | gfc_symbol *sym; |
4ee9c684 | 1787 | |
1788 | initializer = NULL; | |
1789 | as = NULL; | |
b549d2a5 | 1790 | cp_as = NULL; |
4ee9c684 | 1791 | |
1792 | /* When we get here, we've just matched a list of attributes and | |
1793 | maybe a type and a double colon. The next thing we expect to see | |
1794 | is the name of the symbol. */ | |
1795 | m = gfc_match_name (name); | |
1796 | if (m != MATCH_YES) | |
1797 | goto cleanup; | |
1798 | ||
cbb9e6aa | 1799 | var_locus = gfc_current_locus; |
4ee9c684 | 1800 | |
1801 | /* Now we could see the optional array spec. or character length. */ | |
aff518b0 | 1802 | m = gfc_match_array_spec (&as, true, true); |
eae6c6c1 | 1803 | if (m == MATCH_ERROR) |
4ee9c684 | 1804 | goto cleanup; |
3b6a4b41 | 1805 | |
4ee9c684 | 1806 | if (m == MATCH_NO) |
1807 | as = gfc_copy_array_spec (current_as); | |
e97ac7c0 | 1808 | else if (current_as) |
1809 | merge_array_spec (current_as, as, true); | |
4ee9c684 | 1810 | |
eae6c6c1 | 1811 | if (gfc_option.flag_cray_pointer) |
1812 | cp_as = gfc_copy_array_spec (as); | |
1813 | ||
ae2864a8 | 1814 | /* At this point, we know for sure if the symbol is PARAMETER and can thus |
1815 | determine (and check) whether it can be implied-shape. If it | |
1816 | was parsed as assumed-size, change it because PARAMETERs can not | |
1817 | be assumed-size. */ | |
1818 | if (as) | |
1819 | { | |
1820 | if (as->type == AS_IMPLIED_SHAPE && current_attr.flavor != FL_PARAMETER) | |
1821 | { | |
1822 | m = MATCH_ERROR; | |
1823 | gfc_error ("Non-PARAMETER symbol '%s' at %L can't be implied-shape", | |
1824 | name, &var_locus); | |
1825 | goto cleanup; | |
1826 | } | |
1827 | ||
1828 | if (as->type == AS_ASSUMED_SIZE && as->rank == 1 | |
1829 | && current_attr.flavor == FL_PARAMETER) | |
1830 | as->type = AS_IMPLIED_SHAPE; | |
1831 | ||
1832 | if (as->type == AS_IMPLIED_SHAPE | |
1833 | && gfc_notify_std (GFC_STD_F2008, | |
1834 | "Fortran 2008: Implied-shape array at %L", | |
1835 | &var_locus) == FAILURE) | |
1836 | { | |
1837 | m = MATCH_ERROR; | |
1838 | goto cleanup; | |
1839 | } | |
1840 | } | |
1841 | ||
4ee9c684 | 1842 | char_len = NULL; |
1843 | cl = NULL; | |
3e715c81 | 1844 | cl_deferred = false; |
4ee9c684 | 1845 | |
1846 | if (current_ts.type == BT_CHARACTER) | |
1847 | { | |
3e715c81 | 1848 | switch (match_char_length (&char_len, &cl_deferred)) |
4ee9c684 | 1849 | { |
1850 | case MATCH_YES: | |
d270ce52 | 1851 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
4ee9c684 | 1852 | |
1853 | cl->length = char_len; | |
1854 | break; | |
1855 | ||
3923b69f | 1856 | /* Non-constant lengths need to be copied after the first |
04b61f60 | 1857 | element. Also copy assumed lengths. */ |
4ee9c684 | 1858 | case MATCH_NO: |
04b61f60 | 1859 | if (elem > 1 |
eeebe20b | 1860 | && (current_ts.u.cl->length == NULL |
1861 | || current_ts.u.cl->length->expr_type != EXPR_CONSTANT)) | |
3923b69f | 1862 | { |
d270ce52 | 1863 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
eeebe20b | 1864 | cl->length = gfc_copy_expr (current_ts.u.cl->length); |
3923b69f | 1865 | } |
1866 | else | |
eeebe20b | 1867 | cl = current_ts.u.cl; |
3923b69f | 1868 | |
3e715c81 | 1869 | cl_deferred = current_ts.deferred; |
1870 | ||
4ee9c684 | 1871 | break; |
1872 | ||
1873 | case MATCH_ERROR: | |
1874 | goto cleanup; | |
1875 | } | |
1876 | } | |
1877 | ||
b549d2a5 | 1878 | /* If this symbol has already shown up in a Cray Pointer declaration, |
f6d0e37a | 1879 | then we want to set the type & bail out. */ |
b549d2a5 | 1880 | if (gfc_option.flag_cray_pointer) |
1881 | { | |
1882 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
1883 | if (sym != NULL && sym->attr.cray_pointee) | |
1884 | { | |
1885 | sym->ts.type = current_ts.type; | |
1886 | sym->ts.kind = current_ts.kind; | |
eeebe20b | 1887 | sym->ts.u.cl = cl; |
1888 | sym->ts.u.derived = current_ts.u.derived; | |
c5d33754 | 1889 | sym->ts.is_c_interop = current_ts.is_c_interop; |
1890 | sym->ts.is_iso_c = current_ts.is_iso_c; | |
b549d2a5 | 1891 | m = MATCH_YES; |
1892 | ||
1893 | /* Check to see if we have an array specification. */ | |
1894 | if (cp_as != NULL) | |
1895 | { | |
1896 | if (sym->as != NULL) | |
1897 | { | |
7698a624 | 1898 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
b549d2a5 | 1899 | gfc_free_array_spec (cp_as); |
1900 | m = MATCH_ERROR; | |
1901 | goto cleanup; | |
1902 | } | |
1903 | else | |
1904 | { | |
1905 | if (gfc_set_array_spec (sym, cp_as, &var_locus) == FAILURE) | |
1906 | gfc_internal_error ("Couldn't set pointee array spec."); | |
e14bee04 | 1907 | |
b549d2a5 | 1908 | /* Fix the array spec. */ |
e14bee04 | 1909 | m = gfc_mod_pointee_as (sym->as); |
b549d2a5 | 1910 | if (m == MATCH_ERROR) |
1911 | goto cleanup; | |
1912 | } | |
e14bee04 | 1913 | } |
b549d2a5 | 1914 | goto cleanup; |
1915 | } | |
1916 | else | |
1917 | { | |
1918 | gfc_free_array_spec (cp_as); | |
1919 | } | |
1920 | } | |
e14bee04 | 1921 | |
1e057e9b | 1922 | /* Procedure pointer as function result. */ |
1923 | if (gfc_current_state () == COMP_FUNCTION | |
1924 | && strcmp ("ppr@", gfc_current_block ()->name) == 0 | |
1925 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) == 0) | |
1926 | strcpy (name, "ppr@"); | |
1927 | ||
1928 | if (gfc_current_state () == COMP_FUNCTION | |
1929 | && strcmp (name, gfc_current_block ()->name) == 0 | |
1930 | && gfc_current_block ()->result | |
1931 | && strcmp ("ppr@", gfc_current_block ()->result->name) == 0) | |
1932 | strcpy (name, "ppr@"); | |
e14bee04 | 1933 | |
4ee9c684 | 1934 | /* OK, we've successfully matched the declaration. Now put the |
1935 | symbol in the current namespace, because it might be used in the | |
fe06c0d5 | 1936 | optional initialization expression for this symbol, e.g. this is |
4ee9c684 | 1937 | perfectly legal: |
1938 | ||
1939 | integer, parameter :: i = huge(i) | |
1940 | ||
1941 | This is only true for parameters or variables of a basic type. | |
1942 | For components of derived types, it is not true, so we don't | |
1943 | create a symbol for those yet. If we fail to create the symbol, | |
1944 | bail out. */ | |
1945 | if (gfc_current_state () != COMP_DERIVED | |
3e715c81 | 1946 | && build_sym (name, cl, cl_deferred, &as, &var_locus) == FAILURE) |
4ee9c684 | 1947 | { |
b8a51d79 | 1948 | m = MATCH_ERROR; |
1949 | goto cleanup; | |
1950 | } | |
1951 | ||
60fbbf9e | 1952 | /* An interface body specifies all of the procedure's |
1953 | characteristics and these shall be consistent with those | |
1954 | specified in the procedure definition, except that the interface | |
1955 | may specify a procedure that is not pure if the procedure is | |
1956 | defined to be pure(12.3.2). */ | |
71c22dfb | 1957 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
1a9745d2 | 1958 | && gfc_current_ns->proc_name |
1959 | && gfc_current_ns->proc_name->attr.if_source == IFSRC_IFBODY | |
eeebe20b | 1960 | && current_ts.u.derived->ns != gfc_current_ns) |
c723595c | 1961 | { |
1962 | gfc_symtree *st; | |
eeebe20b | 1963 | st = gfc_find_symtree (gfc_current_ns->sym_root, current_ts.u.derived->name); |
1964 | if (!(current_ts.u.derived->attr.imported | |
c723595c | 1965 | && st != NULL |
c2958b6b | 1966 | && gfc_find_dt_in_generic (st->n.sym) == current_ts.u.derived) |
c723595c | 1967 | && !gfc_current_ns->has_import_set) |
1968 | { | |
c2958b6b | 1969 | gfc_error ("The type of '%s' at %C has not been declared within the " |
c723595c | 1970 | "interface", name); |
1971 | m = MATCH_ERROR; | |
1972 | goto cleanup; | |
1973 | } | |
4ee9c684 | 1974 | } |
f3e89339 | 1975 | |
1976 | if (check_function_name (name) == FAILURE) | |
4ee9c684 | 1977 | { |
4ee9c684 | 1978 | m = MATCH_ERROR; |
1979 | goto cleanup; | |
1980 | } | |
1981 | ||
b4f45d02 | 1982 | /* We allow old-style initializations of the form |
1983 | integer i /2/, j(4) /3*3, 1/ | |
1984 | (if no colon has been seen). These are different from data | |
1985 | statements in that initializers are only allowed to apply to the | |
1986 | variable immediately preceding, i.e. | |
1987 | integer i, j /1, 2/ | |
1988 | is not allowed. Therefore we have to do some work manually, that | |
cca3db55 | 1989 | could otherwise be left to the matchers for DATA statements. */ |
b4f45d02 | 1990 | |
1991 | if (!colon_seen && gfc_match (" /") == MATCH_YES) | |
1992 | { | |
1993 | if (gfc_notify_std (GFC_STD_GNU, "Extension: Old-style " | |
1994 | "initialization at %C") == FAILURE) | |
1995 | return MATCH_ERROR; | |
e14bee04 | 1996 | |
b4f45d02 | 1997 | return match_old_style_init (name); |
1998 | } | |
1999 | ||
4ee9c684 | 2000 | /* The double colon must be present in order to have initializers. |
2001 | Otherwise the statement is ambiguous with an assignment statement. */ | |
2002 | if (colon_seen) | |
2003 | { | |
2004 | if (gfc_match (" =>") == MATCH_YES) | |
2005 | { | |
4ee9c684 | 2006 | if (!current_attr.pointer) |
2007 | { | |
2008 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
2009 | m = MATCH_ERROR; | |
2010 | goto cleanup; | |
2011 | } | |
2012 | ||
23d075f4 | 2013 | m = match_pointer_init (&initializer, 0); |
4ee9c684 | 2014 | if (m != MATCH_YES) |
2015 | goto cleanup; | |
4ee9c684 | 2016 | } |
2017 | else if (gfc_match_char ('=') == MATCH_YES) | |
2018 | { | |
2019 | if (current_attr.pointer) | |
2020 | { | |
1a9745d2 | 2021 | gfc_error ("Pointer initialization at %C requires '=>', " |
2022 | "not '='"); | |
4ee9c684 | 2023 | m = MATCH_ERROR; |
2024 | goto cleanup; | |
2025 | } | |
2026 | ||
2027 | m = gfc_match_init_expr (&initializer); | |
2028 | if (m == MATCH_NO) | |
2029 | { | |
2030 | gfc_error ("Expected an initialization expression at %C"); | |
2031 | m = MATCH_ERROR; | |
2032 | } | |
2033 | ||
b3a420c5 | 2034 | if (current_attr.flavor != FL_PARAMETER && gfc_pure (NULL) |
2035 | && gfc_state_stack->state != COMP_DERIVED) | |
4ee9c684 | 2036 | { |
1a9745d2 | 2037 | gfc_error ("Initialization of variable at %C is not allowed in " |
2038 | "a PURE procedure"); | |
4ee9c684 | 2039 | m = MATCH_ERROR; |
2040 | } | |
2041 | ||
2042 | if (m != MATCH_YES) | |
2043 | goto cleanup; | |
2044 | } | |
8ffad0f9 | 2045 | } |
2046 | ||
2294b616 | 2047 | if (initializer != NULL && current_attr.allocatable |
2048 | && gfc_current_state () == COMP_DERIVED) | |
2049 | { | |
1a9745d2 | 2050 | gfc_error ("Initialization of allocatable component at %C is not " |
2051 | "allowed"); | |
2294b616 | 2052 | m = MATCH_ERROR; |
2053 | goto cleanup; | |
2054 | } | |
2055 | ||
d9b3f26b | 2056 | /* Add the initializer. Note that it is fine if initializer is |
4ee9c684 | 2057 | NULL here, because we sometimes also need to check if a |
2058 | declaration *must* have an initialization expression. */ | |
2059 | if (gfc_current_state () != COMP_DERIVED) | |
2060 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
2061 | else | |
d9b3f26b | 2062 | { |
2294b616 | 2063 | if (current_ts.type == BT_DERIVED |
1a9745d2 | 2064 | && !current_attr.pointer && !initializer) |
d9b3f26b | 2065 | initializer = gfc_default_initializer (¤t_ts); |
2066 | t = build_struct (name, cl, &initializer, &as); | |
2067 | } | |
4ee9c684 | 2068 | |
2069 | m = (t == SUCCESS) ? MATCH_YES : MATCH_ERROR; | |
2070 | ||
2071 | cleanup: | |
2072 | /* Free stuff up and return. */ | |
2073 | gfc_free_expr (initializer); | |
2074 | gfc_free_array_spec (as); | |
2075 | ||
2076 | return m; | |
2077 | } | |
2078 | ||
2079 | ||
d10f89ee | 2080 | /* Match an extended-f77 "TYPESPEC*bytesize"-style kind specification. |
2081 | This assumes that the byte size is equal to the kind number for | |
2082 | non-COMPLEX types, and equal to twice the kind number for COMPLEX. */ | |
4ee9c684 | 2083 | |
2084 | match | |
1a9745d2 | 2085 | gfc_match_old_kind_spec (gfc_typespec *ts) |
4ee9c684 | 2086 | { |
2087 | match m; | |
3bd3b616 | 2088 | int original_kind; |
4ee9c684 | 2089 | |
2090 | if (gfc_match_char ('*') != MATCH_YES) | |
2091 | return MATCH_NO; | |
2092 | ||
3bd3b616 | 2093 | m = gfc_match_small_literal_int (&ts->kind, NULL); |
4ee9c684 | 2094 | if (m != MATCH_YES) |
2095 | return MATCH_ERROR; | |
2096 | ||
b118a35b | 2097 | original_kind = ts->kind; |
2098 | ||
4ee9c684 | 2099 | /* Massage the kind numbers for complex types. */ |
b118a35b | 2100 | if (ts->type == BT_COMPLEX) |
2101 | { | |
2102 | if (ts->kind % 2) | |
1a9745d2 | 2103 | { |
2104 | gfc_error ("Old-style type declaration %s*%d not supported at %C", | |
2105 | gfc_basic_typename (ts->type), original_kind); | |
2106 | return MATCH_ERROR; | |
2107 | } | |
b118a35b | 2108 | ts->kind /= 2; |
2d76519f | 2109 | |
2110 | } | |
2111 | ||
2112 | if (ts->type == BT_INTEGER && ts->kind == 4 && gfc_option.flag_integer4_kind == 8) | |
2113 | ts->kind = 8; | |
2114 | ||
2115 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2116 | { | |
2117 | if (ts->kind == 4) | |
2118 | { | |
2119 | if (gfc_option.flag_real4_kind == 8) | |
2120 | ts->kind = 8; | |
2121 | if (gfc_option.flag_real4_kind == 10) | |
2122 | ts->kind = 10; | |
2123 | if (gfc_option.flag_real4_kind == 16) | |
2124 | ts->kind = 16; | |
2125 | } | |
2126 | ||
2127 | if (ts->kind == 8) | |
2128 | { | |
2129 | if (gfc_option.flag_real8_kind == 4) | |
2130 | ts->kind = 4; | |
2131 | if (gfc_option.flag_real8_kind == 10) | |
2132 | ts->kind = 10; | |
2133 | if (gfc_option.flag_real8_kind == 16) | |
2134 | ts->kind = 16; | |
2135 | } | |
b118a35b | 2136 | } |
4ee9c684 | 2137 | |
f2d4ef3b | 2138 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
4ee9c684 | 2139 | { |
b118a35b | 2140 | gfc_error ("Old-style type declaration %s*%d not supported at %C", |
1a9745d2 | 2141 | gfc_basic_typename (ts->type), original_kind); |
4ee9c684 | 2142 | return MATCH_ERROR; |
2143 | } | |
2144 | ||
be7f01a1 | 2145 | if (gfc_notify_std (GFC_STD_GNU, "Nonstandard type declaration %s*%d at %C", |
2146 | gfc_basic_typename (ts->type), original_kind) == FAILURE) | |
2147 | return MATCH_ERROR; | |
2148 | ||
4ee9c684 | 2149 | return MATCH_YES; |
2150 | } | |
2151 | ||
2152 | ||
2153 | /* Match a kind specification. Since kinds are generally optional, we | |
2154 | usually return MATCH_NO if something goes wrong. If a "kind=" | |
2155 | string is found, then we know we have an error. */ | |
2156 | ||
2157 | match | |
67a51c8e | 2158 | gfc_match_kind_spec (gfc_typespec *ts, bool kind_expr_only) |
4ee9c684 | 2159 | { |
67a51c8e | 2160 | locus where, loc; |
4ee9c684 | 2161 | gfc_expr *e; |
2162 | match m, n; | |
c632ff3d | 2163 | char c; |
4ee9c684 | 2164 | const char *msg; |
2165 | ||
2166 | m = MATCH_NO; | |
67a51c8e | 2167 | n = MATCH_YES; |
4ee9c684 | 2168 | e = NULL; |
2169 | ||
67a51c8e | 2170 | where = loc = gfc_current_locus; |
2171 | ||
2172 | if (kind_expr_only) | |
2173 | goto kind_expr; | |
4ee9c684 | 2174 | |
2175 | if (gfc_match_char ('(') == MATCH_NO) | |
2176 | return MATCH_NO; | |
2177 | ||
2178 | /* Also gobbles optional text. */ | |
2179 | if (gfc_match (" kind = ") == MATCH_YES) | |
2180 | m = MATCH_ERROR; | |
2181 | ||
67a51c8e | 2182 | loc = gfc_current_locus; |
2183 | ||
2184 | kind_expr: | |
4ee9c684 | 2185 | n = gfc_match_init_expr (&e); |
67a51c8e | 2186 | |
4ee9c684 | 2187 | if (n != MATCH_YES) |
67a51c8e | 2188 | { |
077932f9 | 2189 | if (gfc_matching_function) |
67a51c8e | 2190 | { |
077932f9 | 2191 | /* The function kind expression might include use associated or |
2192 | imported parameters and try again after the specification | |
2193 | expressions..... */ | |
67a51c8e | 2194 | if (gfc_match_char (')') != MATCH_YES) |
2195 | { | |
2196 | gfc_error ("Missing right parenthesis at %C"); | |
2197 | m = MATCH_ERROR; | |
2198 | goto no_match; | |
2199 | } | |
2200 | ||
2201 | gfc_free_expr (e); | |
67a51c8e | 2202 | gfc_undo_symbols (); |
2203 | return MATCH_YES; | |
2204 | } | |
2205 | else | |
2206 | { | |
2207 | /* ....or else, the match is real. */ | |
2208 | if (n == MATCH_NO) | |
2209 | gfc_error ("Expected initialization expression at %C"); | |
2210 | if (n != MATCH_YES) | |
2211 | return MATCH_ERROR; | |
2212 | } | |
2213 | } | |
4ee9c684 | 2214 | |
2215 | if (e->rank != 0) | |
2216 | { | |
2217 | gfc_error ("Expected scalar initialization expression at %C"); | |
2218 | m = MATCH_ERROR; | |
2219 | goto no_match; | |
2220 | } | |
2221 | ||
2222 | msg = gfc_extract_int (e, &ts->kind); | |
077932f9 | 2223 | |
4ee9c684 | 2224 | if (msg != NULL) |
2225 | { | |
2226 | gfc_error (msg); | |
2227 | m = MATCH_ERROR; | |
2228 | goto no_match; | |
2229 | } | |
2230 | ||
c5d33754 | 2231 | /* Before throwing away the expression, let's see if we had a |
2232 | C interoperable kind (and store the fact). */ | |
2233 | if (e->ts.is_c_interop == 1) | |
2234 | { | |
2235 | /* Mark this as c interoperable if being declared with one | |
2236 | of the named constants from iso_c_binding. */ | |
2237 | ts->is_c_interop = e->ts.is_iso_c; | |
2238 | ts->f90_type = e->ts.f90_type; | |
2239 | } | |
2240 | ||
4ee9c684 | 2241 | gfc_free_expr (e); |
2242 | e = NULL; | |
2243 | ||
c5d33754 | 2244 | /* Ignore errors to this point, if we've gotten here. This means |
2245 | we ignore the m=MATCH_ERROR from above. */ | |
f2d4ef3b | 2246 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
4ee9c684 | 2247 | { |
2248 | gfc_error ("Kind %d not supported for type %s at %C", ts->kind, | |
2249 | gfc_basic_typename (ts->type)); | |
c632ff3d | 2250 | gfc_current_locus = where; |
2251 | return MATCH_ERROR; | |
4ee9c684 | 2252 | } |
c632ff3d | 2253 | |
209d3778 | 2254 | /* Warn if, e.g., c_int is used for a REAL variable, but not |
2255 | if, e.g., c_double is used for COMPLEX as the standard | |
2256 | explicitly says that the kind type parameter for complex and real | |
2257 | variable is the same, i.e. c_float == c_float_complex. */ | |
2258 | if (ts->f90_type != BT_UNKNOWN && ts->f90_type != ts->type | |
2259 | && !((ts->f90_type == BT_REAL && ts->type == BT_COMPLEX) | |
2260 | || (ts->f90_type == BT_COMPLEX && ts->type == BT_REAL))) | |
ded233a6 | 2261 | gfc_warning_now ("C kind type parameter is for type %s but type at %L " |
2262 | "is %s", gfc_basic_typename (ts->f90_type), &where, | |
2263 | gfc_basic_typename (ts->type)); | |
209d3778 | 2264 | |
c632ff3d | 2265 | gfc_gobble_whitespace (); |
e0be6f02 | 2266 | if ((c = gfc_next_ascii_char ()) != ')' |
2267 | && (ts->type != BT_CHARACTER || c != ',')) | |
4ee9c684 | 2268 | { |
c632ff3d | 2269 | if (ts->type == BT_CHARACTER) |
2270 | gfc_error ("Missing right parenthesis or comma at %C"); | |
2271 | else | |
2272 | gfc_error ("Missing right parenthesis at %C"); | |
67a51c8e | 2273 | m = MATCH_ERROR; |
4ee9c684 | 2274 | } |
c5d33754 | 2275 | else |
2276 | /* All tests passed. */ | |
2277 | m = MATCH_YES; | |
4ee9c684 | 2278 | |
c5d33754 | 2279 | if(m == MATCH_ERROR) |
2280 | gfc_current_locus = where; | |
2d76519f | 2281 | |
2282 | if (ts->type == BT_INTEGER && ts->kind == 4 && gfc_option.flag_integer4_kind == 8) | |
2283 | ts->kind = 8; | |
2284 | ||
2285 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2286 | { | |
2287 | if (ts->kind == 4) | |
2288 | { | |
2289 | if (gfc_option.flag_real4_kind == 8) | |
2290 | ts->kind = 8; | |
2291 | if (gfc_option.flag_real4_kind == 10) | |
2292 | ts->kind = 10; | |
2293 | if (gfc_option.flag_real4_kind == 16) | |
2294 | ts->kind = 16; | |
2295 | } | |
2296 | ||
2297 | if (ts->kind == 8) | |
2298 | { | |
2299 | if (gfc_option.flag_real8_kind == 4) | |
2300 | ts->kind = 4; | |
2301 | if (gfc_option.flag_real8_kind == 10) | |
2302 | ts->kind = 10; | |
2303 | if (gfc_option.flag_real8_kind == 16) | |
2304 | ts->kind = 16; | |
2305 | } | |
2306 | } | |
2307 | ||
c5d33754 | 2308 | /* Return what we know from the test(s). */ |
2309 | return m; | |
4ee9c684 | 2310 | |
2311 | no_match: | |
2312 | gfc_free_expr (e); | |
cbb9e6aa | 2313 | gfc_current_locus = where; |
4ee9c684 | 2314 | return m; |
2315 | } | |
2316 | ||
2317 | ||
33399208 | 2318 | static match |
2319 | match_char_kind (int * kind, int * is_iso_c) | |
2320 | { | |
2321 | locus where; | |
2322 | gfc_expr *e; | |
2323 | match m, n; | |
2324 | const char *msg; | |
2325 | ||
2326 | m = MATCH_NO; | |
2327 | e = NULL; | |
2328 | where = gfc_current_locus; | |
2329 | ||
2330 | n = gfc_match_init_expr (&e); | |
c632ff3d | 2331 | |
077932f9 | 2332 | if (n != MATCH_YES && gfc_matching_function) |
c632ff3d | 2333 | { |
077932f9 | 2334 | /* The expression might include use-associated or imported |
2335 | parameters and try again after the specification | |
2336 | expressions. */ | |
c632ff3d | 2337 | gfc_free_expr (e); |
c632ff3d | 2338 | gfc_undo_symbols (); |
2339 | return MATCH_YES; | |
2340 | } | |
2341 | ||
33399208 | 2342 | if (n == MATCH_NO) |
2343 | gfc_error ("Expected initialization expression at %C"); | |
2344 | if (n != MATCH_YES) | |
2345 | return MATCH_ERROR; | |
2346 | ||
2347 | if (e->rank != 0) | |
2348 | { | |
2349 | gfc_error ("Expected scalar initialization expression at %C"); | |
2350 | m = MATCH_ERROR; | |
2351 | goto no_match; | |
2352 | } | |
2353 | ||
2354 | msg = gfc_extract_int (e, kind); | |
2355 | *is_iso_c = e->ts.is_iso_c; | |
2356 | if (msg != NULL) | |
2357 | { | |
2358 | gfc_error (msg); | |
2359 | m = MATCH_ERROR; | |
2360 | goto no_match; | |
2361 | } | |
2362 | ||
2363 | gfc_free_expr (e); | |
2364 | ||
2365 | /* Ignore errors to this point, if we've gotten here. This means | |
2366 | we ignore the m=MATCH_ERROR from above. */ | |
2367 | if (gfc_validate_kind (BT_CHARACTER, *kind, true) < 0) | |
2368 | { | |
2369 | gfc_error ("Kind %d is not supported for CHARACTER at %C", *kind); | |
2370 | m = MATCH_ERROR; | |
2371 | } | |
2372 | else | |
2373 | /* All tests passed. */ | |
2374 | m = MATCH_YES; | |
2375 | ||
2376 | if (m == MATCH_ERROR) | |
2377 | gfc_current_locus = where; | |
2378 | ||
2379 | /* Return what we know from the test(s). */ | |
2380 | return m; | |
2381 | ||
2382 | no_match: | |
2383 | gfc_free_expr (e); | |
2384 | gfc_current_locus = where; | |
2385 | return m; | |
2386 | } | |
2387 | ||
10f5dcc0 | 2388 | |
4ee9c684 | 2389 | /* Match the various kind/length specifications in a CHARACTER |
2390 | declaration. We don't return MATCH_NO. */ | |
2391 | ||
10f5dcc0 | 2392 | match |
2393 | gfc_match_char_spec (gfc_typespec *ts) | |
4ee9c684 | 2394 | { |
33399208 | 2395 | int kind, seen_length, is_iso_c; |
4ee9c684 | 2396 | gfc_charlen *cl; |
2397 | gfc_expr *len; | |
2398 | match m; | |
3e715c81 | 2399 | bool deferred; |
33399208 | 2400 | |
4ee9c684 | 2401 | len = NULL; |
2402 | seen_length = 0; | |
33399208 | 2403 | kind = 0; |
2404 | is_iso_c = 0; | |
3e715c81 | 2405 | deferred = false; |
4ee9c684 | 2406 | |
2407 | /* Try the old-style specification first. */ | |
2408 | old_char_selector = 0; | |
2409 | ||
3e715c81 | 2410 | m = match_char_length (&len, &deferred); |
4ee9c684 | 2411 | if (m != MATCH_NO) |
2412 | { | |
2413 | if (m == MATCH_YES) | |
2414 | old_char_selector = 1; | |
2415 | seen_length = 1; | |
2416 | goto done; | |
2417 | } | |
2418 | ||
2419 | m = gfc_match_char ('('); | |
2420 | if (m != MATCH_YES) | |
2421 | { | |
c5d33754 | 2422 | m = MATCH_YES; /* Character without length is a single char. */ |
4ee9c684 | 2423 | goto done; |
2424 | } | |
2425 | ||
c5d33754 | 2426 | /* Try the weird case: ( KIND = <int> [ , LEN = <len-param> ] ). */ |
4ee9c684 | 2427 | if (gfc_match (" kind =") == MATCH_YES) |
2428 | { | |
33399208 | 2429 | m = match_char_kind (&kind, &is_iso_c); |
c5d33754 | 2430 | |
4ee9c684 | 2431 | if (m == MATCH_ERROR) |
2432 | goto done; | |
2433 | if (m == MATCH_NO) | |
2434 | goto syntax; | |
2435 | ||
2436 | if (gfc_match (" , len =") == MATCH_NO) | |
2437 | goto rparen; | |
2438 | ||
3e715c81 | 2439 | m = char_len_param_value (&len, &deferred); |
4ee9c684 | 2440 | if (m == MATCH_NO) |
2441 | goto syntax; | |
2442 | if (m == MATCH_ERROR) | |
2443 | goto done; | |
2444 | seen_length = 1; | |
2445 | ||
2446 | goto rparen; | |
2447 | } | |
2448 | ||
f6d0e37a | 2449 | /* Try to match "LEN = <len-param>" or "LEN = <len-param>, KIND = <int>". */ |
4ee9c684 | 2450 | if (gfc_match (" len =") == MATCH_YES) |
2451 | { | |
3e715c81 | 2452 | m = char_len_param_value (&len, &deferred); |
4ee9c684 | 2453 | if (m == MATCH_NO) |
2454 | goto syntax; | |
2455 | if (m == MATCH_ERROR) | |
2456 | goto done; | |
2457 | seen_length = 1; | |
2458 | ||
2459 | if (gfc_match_char (')') == MATCH_YES) | |
2460 | goto done; | |
2461 | ||
2462 | if (gfc_match (" , kind =") != MATCH_YES) | |
2463 | goto syntax; | |
2464 | ||
33399208 | 2465 | if (match_char_kind (&kind, &is_iso_c) == MATCH_ERROR) |
2466 | goto done; | |
4ee9c684 | 2467 | |
2468 | goto rparen; | |
2469 | } | |
2470 | ||
f6d0e37a | 2471 | /* Try to match ( <len-param> ) or ( <len-param> , [ KIND = ] <int> ). */ |
3e715c81 | 2472 | m = char_len_param_value (&len, &deferred); |
4ee9c684 | 2473 | if (m == MATCH_NO) |
2474 | goto syntax; | |
2475 | if (m == MATCH_ERROR) | |
2476 | goto done; | |
2477 | seen_length = 1; | |
2478 | ||
2479 | m = gfc_match_char (')'); | |
2480 | if (m == MATCH_YES) | |
2481 | goto done; | |
2482 | ||
2483 | if (gfc_match_char (',') != MATCH_YES) | |
2484 | goto syntax; | |
2485 | ||
c5d33754 | 2486 | gfc_match (" kind ="); /* Gobble optional text. */ |
4ee9c684 | 2487 | |
33399208 | 2488 | m = match_char_kind (&kind, &is_iso_c); |
4ee9c684 | 2489 | if (m == MATCH_ERROR) |
2490 | goto done; | |
2491 | if (m == MATCH_NO) | |
2492 | goto syntax; | |
2493 | ||
2494 | rparen: | |
2495 | /* Require a right-paren at this point. */ | |
2496 | m = gfc_match_char (')'); | |
2497 | if (m == MATCH_YES) | |
2498 | goto done; | |
2499 | ||
2500 | syntax: | |
2501 | gfc_error ("Syntax error in CHARACTER declaration at %C"); | |
2502 | m = MATCH_ERROR; | |
a3cbe8cc | 2503 | gfc_free_expr (len); |
2504 | return m; | |
4ee9c684 | 2505 | |
2506 | done: | |
8d39570e | 2507 | /* Deal with character functions after USE and IMPORT statements. */ |
2508 | if (gfc_matching_function) | |
077932f9 | 2509 | { |
8d39570e | 2510 | gfc_free_expr (len); |
077932f9 | 2511 | gfc_undo_symbols (); |
2512 | return MATCH_YES; | |
2513 | } | |
2514 | ||
4ee9c684 | 2515 | if (m != MATCH_YES) |
2516 | { | |
2517 | gfc_free_expr (len); | |
2518 | return m; | |
2519 | } | |
2520 | ||
2521 | /* Do some final massaging of the length values. */ | |
d270ce52 | 2522 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
4ee9c684 | 2523 | |
2524 | if (seen_length == 0) | |
126387b5 | 2525 | cl->length = gfc_get_int_expr (gfc_default_integer_kind, NULL, 1); |
4ee9c684 | 2526 | else |
2fe2caa6 | 2527 | cl->length = len; |
4ee9c684 | 2528 | |
eeebe20b | 2529 | ts->u.cl = cl; |
33399208 | 2530 | ts->kind = kind == 0 ? gfc_default_character_kind : kind; |
3e715c81 | 2531 | ts->deferred = deferred; |
4ee9c684 | 2532 | |
c5d33754 | 2533 | /* We have to know if it was a c interoperable kind so we can |
2534 | do accurate type checking of bind(c) procs, etc. */ | |
33399208 | 2535 | if (kind != 0) |
2536 | /* Mark this as c interoperable if being declared with one | |
2537 | of the named constants from iso_c_binding. */ | |
2538 | ts->is_c_interop = is_iso_c; | |
c5d33754 | 2539 | else if (len != NULL) |
33399208 | 2540 | /* Here, we might have parsed something such as: character(c_char) |
2541 | In this case, the parsing code above grabs the c_char when | |
2542 | looking for the length (line 1690, roughly). it's the last | |
2543 | testcase for parsing the kind params of a character variable. | |
2544 | However, it's not actually the length. this seems like it | |
2545 | could be an error. | |
2546 | To see if the user used a C interop kind, test the expr | |
2547 | of the so called length, and see if it's C interoperable. */ | |
2548 | ts->is_c_interop = len->ts.is_iso_c; | |
c5d33754 | 2549 | |
4ee9c684 | 2550 | return MATCH_YES; |
2551 | } | |
2552 | ||
2553 | ||
e8152f13 | 2554 | /* Matches a declaration-type-spec (F03:R502). If successful, sets the ts |
2555 | structure to the matched specification. This is necessary for FUNCTION and | |
4ee9c684 | 2556 | IMPLICIT statements. |
2557 | ||
e14bee04 | 2558 | If implicit_flag is nonzero, then we don't check for the optional |
39351103 | 2559 | kind specification. Not doing so is needed for matching an IMPLICIT |
4ee9c684 | 2560 | statement correctly. */ |
2561 | ||
67a51c8e | 2562 | match |
e8152f13 | 2563 | gfc_match_decl_type_spec (gfc_typespec *ts, int implicit_flag) |
4ee9c684 | 2564 | { |
2565 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c2958b6b | 2566 | gfc_symbol *sym, *dt_sym; |
4ee9c684 | 2567 | match m; |
e0be6f02 | 2568 | char c; |
f446fb22 | 2569 | bool seen_deferred_kind, matched_type; |
c2958b6b | 2570 | const char *dt_name; |
4ee9c684 | 2571 | |
077932f9 | 2572 | /* A belt and braces check that the typespec is correctly being treated |
2573 | as a deferred characteristic association. */ | |
2574 | seen_deferred_kind = (gfc_current_state () == COMP_FUNCTION) | |
8d39570e | 2575 | && (gfc_current_block ()->result->ts.kind == -1) |
2576 | && (ts->kind == -1); | |
4ee9c684 | 2577 | gfc_clear_ts (ts); |
077932f9 | 2578 | if (seen_deferred_kind) |
2579 | ts->kind = -1; | |
4ee9c684 | 2580 | |
c5d33754 | 2581 | /* Clear the current binding label, in case one is given. */ |
7b2060ba | 2582 | curr_binding_label = NULL; |
c5d33754 | 2583 | |
25b29122 | 2584 | if (gfc_match (" byte") == MATCH_YES) |
2585 | { | |
2c89e2a0 | 2586 | if (gfc_notify_std (GFC_STD_GNU, "Extension: BYTE type at %C") |
25b29122 | 2587 | == FAILURE) |
2588 | return MATCH_ERROR; | |
2589 | ||
2590 | if (gfc_validate_kind (BT_INTEGER, 1, true) < 0) | |
2591 | { | |
2592 | gfc_error ("BYTE type used at %C " | |
2593 | "is not available on the target machine"); | |
2594 | return MATCH_ERROR; | |
2595 | } | |
e14bee04 | 2596 | |
25b29122 | 2597 | ts->type = BT_INTEGER; |
2598 | ts->kind = 1; | |
2599 | return MATCH_YES; | |
2600 | } | |
2601 | ||
f446fb22 | 2602 | |
8c2d8d6d | 2603 | m = gfc_match (" type ("); |
f446fb22 | 2604 | matched_type = (m == MATCH_YES); |
8c2d8d6d | 2605 | if (matched_type) |
2606 | { | |
2607 | gfc_gobble_whitespace (); | |
2608 | if (gfc_peek_ascii_char () == '*') | |
2609 | { | |
2610 | if ((m = gfc_match ("*)")) != MATCH_YES) | |
2611 | return m; | |
2612 | if (gfc_current_state () == COMP_DERIVED) | |
2613 | { | |
2614 | gfc_error ("Assumed type at %C is not allowed for components"); | |
2615 | return MATCH_ERROR; | |
2616 | } | |
2617 | if (gfc_notify_std (GFC_STD_F2008_TS, "TS 29113: Assumed type " | |
2618 | "at %C") == FAILURE) | |
2619 | return MATCH_ERROR; | |
2620 | ts->type = BT_ASSUMED; | |
2621 | return MATCH_YES; | |
2622 | } | |
2623 | ||
2624 | m = gfc_match ("%n", name); | |
2625 | matched_type = (m == MATCH_YES); | |
2626 | } | |
2627 | ||
f446fb22 | 2628 | if ((matched_type && strcmp ("integer", name) == 0) |
2629 | || (!matched_type && gfc_match (" integer") == MATCH_YES)) | |
4ee9c684 | 2630 | { |
2631 | ts->type = BT_INTEGER; | |
b8a891cb | 2632 | ts->kind = gfc_default_integer_kind; |
4ee9c684 | 2633 | goto get_kind; |
2634 | } | |
2635 | ||
f446fb22 | 2636 | if ((matched_type && strcmp ("character", name) == 0) |
2637 | || (!matched_type && gfc_match (" character") == MATCH_YES)) | |
4ee9c684 | 2638 | { |
f446fb22 | 2639 | if (matched_type |
2640 | && gfc_notify_std (GFC_STD_F2008, "Fortran 2008: TYPE with " | |
2641 | "intrinsic-type-spec at %C") == FAILURE) | |
2642 | return MATCH_ERROR; | |
2643 | ||
4ee9c684 | 2644 | ts->type = BT_CHARACTER; |
39351103 | 2645 | if (implicit_flag == 0) |
f446fb22 | 2646 | m = gfc_match_char_spec (ts); |
39351103 | 2647 | else |
f446fb22 | 2648 | m = MATCH_YES; |
2649 | ||
2650 | if (matched_type && m == MATCH_YES && gfc_match_char (')') != MATCH_YES) | |
2651 | m = MATCH_ERROR; | |
2652 | ||
2653 | return m; | |
4ee9c684 | 2654 | } |
2655 | ||
f446fb22 | 2656 | if ((matched_type && strcmp ("real", name) == 0) |
2657 | || (!matched_type && gfc_match (" real") == MATCH_YES)) | |
4ee9c684 | 2658 | { |
2659 | ts->type = BT_REAL; | |
b8a891cb | 2660 | ts->kind = gfc_default_real_kind; |
4ee9c684 | 2661 | goto get_kind; |
2662 | } | |
2663 | ||
f446fb22 | 2664 | if ((matched_type |
2665 | && (strcmp ("doubleprecision", name) == 0 | |
2666 | || (strcmp ("double", name) == 0 | |
2667 | && gfc_match (" precision") == MATCH_YES))) | |
2668 | || (!matched_type && gfc_match (" double precision") == MATCH_YES)) | |
4ee9c684 | 2669 | { |
f446fb22 | 2670 | if (matched_type |
2671 | && gfc_notify_std (GFC_STD_F2008, "Fortran 2008: TYPE with " | |
2672 | "intrinsic-type-spec at %C") == FAILURE) | |
2673 | return MATCH_ERROR; | |
2674 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
2675 | return MATCH_ERROR; | |
2676 | ||
4ee9c684 | 2677 | ts->type = BT_REAL; |
b8a891cb | 2678 | ts->kind = gfc_default_double_kind; |
4ee9c684 | 2679 | return MATCH_YES; |
2680 | } | |
2681 | ||
f446fb22 | 2682 | if ((matched_type && strcmp ("complex", name) == 0) |
2683 | || (!matched_type && gfc_match (" complex") == MATCH_YES)) | |
4ee9c684 | 2684 | { |
2685 | ts->type = BT_COMPLEX; | |
b8a891cb | 2686 | ts->kind = gfc_default_complex_kind; |
4ee9c684 | 2687 | goto get_kind; |
2688 | } | |
2689 | ||
f446fb22 | 2690 | if ((matched_type |
2691 | && (strcmp ("doublecomplex", name) == 0 | |
2692 | || (strcmp ("double", name) == 0 | |
2693 | && gfc_match (" complex") == MATCH_YES))) | |
2694 | || (!matched_type && gfc_match (" double complex") == MATCH_YES)) | |
4ee9c684 | 2695 | { |
f446fb22 | 2696 | if (gfc_notify_std (GFC_STD_GNU, "Extension: DOUBLE COMPLEX at %C") |
2697 | == FAILURE) | |
2698 | return MATCH_ERROR; | |
2699 | ||
2700 | if (matched_type | |
2701 | && gfc_notify_std (GFC_STD_F2008, "Fortran 2008: TYPE with " | |
2702 | "intrinsic-type-spec at %C") == FAILURE) | |
2703 | return MATCH_ERROR; | |
2704 | ||
2705 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
be7f01a1 | 2706 | return MATCH_ERROR; |
2707 | ||
4ee9c684 | 2708 | ts->type = BT_COMPLEX; |
b8a891cb | 2709 | ts->kind = gfc_default_double_kind; |
4ee9c684 | 2710 | return MATCH_YES; |
2711 | } | |
2712 | ||
f446fb22 | 2713 | if ((matched_type && strcmp ("logical", name) == 0) |
2714 | || (!matched_type && gfc_match (" logical") == MATCH_YES)) | |
4ee9c684 | 2715 | { |
2716 | ts->type = BT_LOGICAL; | |
b8a891cb | 2717 | ts->kind = gfc_default_logical_kind; |
4ee9c684 | 2718 | goto get_kind; |
2719 | } | |
2720 | ||
f446fb22 | 2721 | if (matched_type) |
2722 | m = gfc_match_char (')'); | |
2723 | ||
1de1b1a9 | 2724 | if (m == MATCH_YES) |
2725 | ts->type = BT_DERIVED; | |
2726 | else | |
8ca7f89c | 2727 | { |
fa102e56 | 2728 | /* Match CLASS declarations. */ |
2729 | m = gfc_match (" class ( * )"); | |
2730 | if (m == MATCH_ERROR) | |
2731 | return MATCH_ERROR; | |
2732 | else if (m == MATCH_YES) | |
2733 | { | |
2734 | gfc_fatal_error ("Unlimited polymorphism at %C not yet supported"); | |
2735 | return MATCH_ERROR; | |
2736 | } | |
2737 | ||
8ca7f89c | 2738 | m = gfc_match (" class ( %n )", name); |
2739 | if (m != MATCH_YES) | |
2740 | return m; | |
1de1b1a9 | 2741 | ts->type = BT_CLASS; |
8ca7f89c | 2742 | |
e8152f13 | 2743 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: CLASS statement at %C") |
2744 | == FAILURE) | |
2745 | return MATCH_ERROR; | |
8ca7f89c | 2746 | } |
4ee9c684 | 2747 | |
077932f9 | 2748 | /* Defer association of the derived type until the end of the |
2749 | specification block. However, if the derived type can be | |
2750 | found, add it to the typespec. */ | |
2751 | if (gfc_matching_function) | |
67a51c8e | 2752 | { |
eeebe20b | 2753 | ts->u.derived = NULL; |
077932f9 | 2754 | if (gfc_current_state () != COMP_INTERFACE |
2755 | && !gfc_find_symbol (name, NULL, 1, &sym) && sym) | |
c2958b6b | 2756 | { |
2757 | sym = gfc_find_dt_in_generic (sym); | |
2758 | ts->u.derived = sym; | |
2759 | } | |
67a51c8e | 2760 | return MATCH_YES; |
2761 | } | |
2762 | ||
2763 | /* Search for the name but allow the components to be defined later. If | |
2764 | type = -1, this typespec has been seen in a function declaration but | |
c2958b6b | 2765 | the type could not be accessed at that point. The actual derived type is |
2766 | stored in a symtree with the first letter of the name captialized; the | |
2767 | symtree with the all lower-case name contains the associated | |
2768 | generic function. */ | |
2769 | dt_name = gfc_get_string ("%c%s", | |
2770 | (char) TOUPPER ((unsigned char) name[0]), | |
2771 | (const char*)&name[1]); | |
077932f9 | 2772 | sym = NULL; |
c2958b6b | 2773 | dt_sym = NULL; |
2774 | if (ts->kind != -1) | |
4ee9c684 | 2775 | { |
c2958b6b | 2776 | gfc_get_ha_symbol (name, &sym); |
2777 | if (sym->generic && gfc_find_symbol (dt_name, NULL, 0, &dt_sym)) | |
2778 | { | |
2779 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
2780 | return MATCH_ERROR; | |
2781 | } | |
2782 | if (sym->generic && !dt_sym) | |
2783 | dt_sym = gfc_find_dt_in_generic (sym); | |
4ee9c684 | 2784 | } |
67a51c8e | 2785 | else if (ts->kind == -1) |
2786 | { | |
077932f9 | 2787 | int iface = gfc_state_stack->previous->state != COMP_INTERFACE |
2788 | || gfc_current_ns->has_import_set; | |
c2958b6b | 2789 | gfc_find_symbol (name, NULL, iface, &sym); |
2790 | if (sym && sym->generic && gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
67a51c8e | 2791 | { |
2792 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
2793 | return MATCH_ERROR; | |
2794 | } | |
c2958b6b | 2795 | if (sym && sym->generic && !dt_sym) |
2796 | dt_sym = gfc_find_dt_in_generic (sym); | |
67a51c8e | 2797 | |
077932f9 | 2798 | ts->kind = 0; |
67a51c8e | 2799 | if (sym == NULL) |
2800 | return MATCH_NO; | |
2801 | } | |
4ee9c684 | 2802 | |
c2958b6b | 2803 | if ((sym->attr.flavor != FL_UNKNOWN |
2804 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.generic)) | |
2805 | || sym->attr.subroutine) | |
2806 | { | |
2807 | gfc_error ("Type name '%s' at %C conflicts with previously declared " | |
2808 | "entity at %L, which has the same name", name, | |
2809 | &sym->declared_at); | |
2810 | return MATCH_ERROR; | |
2811 | } | |
4ee9c684 | 2812 | |
077932f9 | 2813 | gfc_set_sym_referenced (sym); |
c2958b6b | 2814 | if (!sym->attr.generic |
2815 | && gfc_add_generic (&sym->attr, sym->name, NULL) == FAILURE) | |
2816 | return MATCH_ERROR; | |
2817 | ||
2818 | if (!sym->attr.function | |
2819 | && gfc_add_function (&sym->attr, sym->name, NULL) == FAILURE) | |
2820 | return MATCH_ERROR; | |
2821 | ||
2822 | if (!dt_sym) | |
2823 | { | |
2824 | gfc_interface *intr, *head; | |
2825 | ||
2826 | /* Use upper case to save the actual derived-type symbol. */ | |
2827 | gfc_get_symbol (dt_name, NULL, &dt_sym); | |
2828 | dt_sym->name = gfc_get_string (sym->name); | |
2829 | head = sym->generic; | |
2830 | intr = gfc_get_interface (); | |
2831 | intr->sym = dt_sym; | |
2832 | intr->where = gfc_current_locus; | |
2833 | intr->next = head; | |
2834 | sym->generic = intr; | |
2835 | sym->attr.if_source = IFSRC_DECL; | |
2836 | } | |
2837 | ||
2838 | gfc_set_sym_referenced (dt_sym); | |
2839 | ||
2840 | if (dt_sym->attr.flavor != FL_DERIVED | |
2841 | && gfc_add_flavor (&dt_sym->attr, FL_DERIVED, sym->name, NULL) | |
2842 | == FAILURE) | |
2843 | return MATCH_ERROR; | |
2844 | ||
2845 | ts->u.derived = dt_sym; | |
4ee9c684 | 2846 | |
2847 | return MATCH_YES; | |
2848 | ||
2849 | get_kind: | |
f446fb22 | 2850 | if (matched_type |
2851 | && gfc_notify_std (GFC_STD_F2008, "Fortran 2008: TYPE with " | |
2852 | "intrinsic-type-spec at %C") == FAILURE) | |
2853 | return MATCH_ERROR; | |
2854 | ||
4ee9c684 | 2855 | /* For all types except double, derived and character, look for an |
2856 | optional kind specifier. MATCH_NO is actually OK at this point. */ | |
39351103 | 2857 | if (implicit_flag == 1) |
f446fb22 | 2858 | { |
2859 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
2860 | return MATCH_ERROR; | |
2861 | ||
2862 | return MATCH_YES; | |
2863 | } | |
4ee9c684 | 2864 | |
18f3698a | 2865 | if (gfc_current_form == FORM_FREE) |
2866 | { | |
2c89e2a0 | 2867 | c = gfc_peek_ascii_char (); |
2868 | if (!gfc_is_whitespace (c) && c != '*' && c != '(' | |
1a9745d2 | 2869 | && c != ':' && c != ',') |
f446fb22 | 2870 | { |
2871 | if (matched_type && c == ')') | |
2872 | { | |
2873 | gfc_next_ascii_char (); | |
2874 | return MATCH_YES; | |
2875 | } | |
2876 | return MATCH_NO; | |
2877 | } | |
18f3698a | 2878 | } |
2879 | ||
67a51c8e | 2880 | m = gfc_match_kind_spec (ts, false); |
4ee9c684 | 2881 | if (m == MATCH_NO && ts->type != BT_CHARACTER) |
2882 | m = gfc_match_old_kind_spec (ts); | |
2883 | ||
f446fb22 | 2884 | if (matched_type && gfc_match_char (')') != MATCH_YES) |
2885 | return MATCH_ERROR; | |
2886 | ||
077932f9 | 2887 | /* Defer association of the KIND expression of function results |
2888 | until after USE and IMPORT statements. */ | |
2889 | if ((gfc_current_state () == COMP_NONE && gfc_error_flag_test ()) | |
2890 | || gfc_matching_function) | |
2891 | return MATCH_YES; | |
2892 | ||
4ee9c684 | 2893 | if (m == MATCH_NO) |
2894 | m = MATCH_YES; /* No kind specifier found. */ | |
2895 | ||
2896 | return m; | |
2897 | } | |
2898 | ||
2899 | ||
39351103 | 2900 | /* Match an IMPLICIT NONE statement. Actually, this statement is |
2901 | already matched in parse.c, or we would not end up here in the | |
2902 | first place. So the only thing we need to check, is if there is | |
2903 | trailing garbage. If not, the match is successful. */ | |
2904 | ||
2905 | match | |
2906 | gfc_match_implicit_none (void) | |
2907 | { | |
39351103 | 2908 | return (gfc_match_eos () == MATCH_YES) ? MATCH_YES : MATCH_NO; |
2909 | } | |
2910 | ||
2911 | ||
2912 | /* Match the letter range(s) of an IMPLICIT statement. */ | |
2913 | ||
2914 | static match | |
b70528c7 | 2915 | match_implicit_range (void) |
39351103 | 2916 | { |
e0be6f02 | 2917 | char c, c1, c2; |
2918 | int inner; | |
39351103 | 2919 | locus cur_loc; |
2920 | ||
2921 | cur_loc = gfc_current_locus; | |
2922 | ||
2923 | gfc_gobble_whitespace (); | |
e0be6f02 | 2924 | c = gfc_next_ascii_char (); |
39351103 | 2925 | if (c != '(') |
2926 | { | |
2927 | gfc_error ("Missing character range in IMPLICIT at %C"); | |
2928 | goto bad; | |
2929 | } | |
2930 | ||
2931 | inner = 1; | |
2932 | while (inner) | |
2933 | { | |
2934 | gfc_gobble_whitespace (); | |
e0be6f02 | 2935 | c1 = gfc_next_ascii_char (); |
39351103 | 2936 | if (!ISALPHA (c1)) |
2937 | goto bad; | |
2938 | ||
2939 | gfc_gobble_whitespace (); | |
e0be6f02 | 2940 | c = gfc_next_ascii_char (); |
39351103 | 2941 | |
2942 | switch (c) | |
2943 | { | |
2944 | case ')': | |
f6d0e37a | 2945 | inner = 0; /* Fall through. */ |
39351103 | 2946 | |
2947 | case ',': | |
2948 | c2 = c1; | |
2949 | break; | |
2950 | ||
2951 | case '-': | |
2952 | gfc_gobble_whitespace (); | |
e0be6f02 | 2953 | c2 = gfc_next_ascii_char (); |
39351103 | 2954 | if (!ISALPHA (c2)) |
2955 | goto bad; | |
2956 | ||
2957 | gfc_gobble_whitespace (); | |
e0be6f02 | 2958 | c = gfc_next_ascii_char (); |
39351103 | 2959 | |
2960 | if ((c != ',') && (c != ')')) | |
2961 | goto bad; | |
2962 | if (c == ')') | |
2963 | inner = 0; | |
2964 | ||
2965 | break; | |
2966 | ||
2967 | default: | |
2968 | goto bad; | |
2969 | } | |
2970 | ||
2971 | if (c1 > c2) | |
2972 | { | |
2973 | gfc_error ("Letters must be in alphabetic order in " | |
2974 | "IMPLICIT statement at %C"); | |
2975 | goto bad; | |
2976 | } | |
2977 | ||
2978 | /* See if we can add the newly matched range to the pending | |
1a9745d2 | 2979 | implicits from this IMPLICIT statement. We do not check for |
2980 | conflicts with whatever earlier IMPLICIT statements may have | |
2981 | set. This is done when we've successfully finished matching | |
2982 | the current one. */ | |
b70528c7 | 2983 | if (gfc_add_new_implicit_range (c1, c2) != SUCCESS) |
39351103 | 2984 | goto bad; |
2985 | } | |
2986 | ||
2987 | return MATCH_YES; | |
2988 | ||
2989 | bad: | |
2990 | gfc_syntax_error (ST_IMPLICIT); | |
2991 | ||
2992 | gfc_current_locus = cur_loc; | |
2993 | return MATCH_ERROR; | |
2994 | } | |
2995 | ||
2996 | ||
2997 | /* Match an IMPLICIT statement, storing the types for | |
2998 | gfc_set_implicit() if the statement is accepted by the parser. | |
2999 | There is a strange looking, but legal syntactic construction | |
3000 | possible. It looks like: | |
3001 | ||
3002 | IMPLICIT INTEGER (a-b) (c-d) | |
3003 | ||
3004 | This is legal if "a-b" is a constant expression that happens to | |
3005 | equal one of the legal kinds for integers. The real problem | |
3006 | happens with an implicit specification that looks like: | |
3007 | ||
3008 | IMPLICIT INTEGER (a-b) | |
3009 | ||
3010 | In this case, a typespec matcher that is "greedy" (as most of the | |
3011 | matchers are) gobbles the character range as a kindspec, leaving | |
3012 | nothing left. We therefore have to go a bit more slowly in the | |
3013 | matching process by inhibiting the kindspec checking during | |
3014 | typespec matching and checking for a kind later. */ | |
3015 | ||
3016 | match | |
3017 | gfc_match_implicit (void) | |
3018 | { | |
3019 | gfc_typespec ts; | |
3020 | locus cur_loc; | |
e0be6f02 | 3021 | char c; |
39351103 | 3022 | match m; |
3023 | ||
52179f31 | 3024 | gfc_clear_ts (&ts); |
3025 | ||
39351103 | 3026 | /* We don't allow empty implicit statements. */ |
3027 | if (gfc_match_eos () == MATCH_YES) | |
3028 | { | |
3029 | gfc_error ("Empty IMPLICIT statement at %C"); | |
3030 | return MATCH_ERROR; | |
3031 | } | |
3032 | ||
39351103 | 3033 | do |
3034 | { | |
b70528c7 | 3035 | /* First cleanup. */ |
3036 | gfc_clear_new_implicit (); | |
3037 | ||
39351103 | 3038 | /* A basic type is mandatory here. */ |
e8152f13 | 3039 | m = gfc_match_decl_type_spec (&ts, 1); |
39351103 | 3040 | if (m == MATCH_ERROR) |
3041 | goto error; | |
3042 | if (m == MATCH_NO) | |
3043 | goto syntax; | |
3044 | ||
3045 | cur_loc = gfc_current_locus; | |
b70528c7 | 3046 | m = match_implicit_range (); |
39351103 | 3047 | |
3048 | if (m == MATCH_YES) | |
3049 | { | |
b70528c7 | 3050 | /* We may have <TYPE> (<RANGE>). */ |
39351103 | 3051 | gfc_gobble_whitespace (); |
e0be6f02 | 3052 | c = gfc_next_ascii_char (); |
39351103 | 3053 | if ((c == '\n') || (c == ',')) |
b70528c7 | 3054 | { |
3055 | /* Check for CHARACTER with no length parameter. */ | |
eeebe20b | 3056 | if (ts.type == BT_CHARACTER && !ts.u.cl) |
b70528c7 | 3057 | { |
b8a891cb | 3058 | ts.kind = gfc_default_character_kind; |
d270ce52 | 3059 | ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
126387b5 | 3060 | ts.u.cl->length = gfc_get_int_expr (gfc_default_integer_kind, |
3061 | NULL, 1); | |
b70528c7 | 3062 | } |
3063 | ||
3064 | /* Record the Successful match. */ | |
3065 | if (gfc_merge_new_implicit (&ts) != SUCCESS) | |
3066 | return MATCH_ERROR; | |
3067 | continue; | |
3068 | } | |
39351103 | 3069 | |
3070 | gfc_current_locus = cur_loc; | |
3071 | } | |
3072 | ||
b70528c7 | 3073 | /* Discard the (incorrectly) matched range. */ |
3074 | gfc_clear_new_implicit (); | |
3075 | ||
3076 | /* Last chance -- check <TYPE> <SELECTOR> (<RANGE>). */ | |
3077 | if (ts.type == BT_CHARACTER) | |
10f5dcc0 | 3078 | m = gfc_match_char_spec (&ts); |
b70528c7 | 3079 | else |
39351103 | 3080 | { |
67a51c8e | 3081 | m = gfc_match_kind_spec (&ts, false); |
39351103 | 3082 | if (m == MATCH_NO) |
b70528c7 | 3083 | { |
3084 | m = gfc_match_old_kind_spec (&ts); | |
3085 | if (m == MATCH_ERROR) | |
3086 | goto error; | |
3087 | if (m == MATCH_NO) | |
3088 | goto syntax; | |
3089 | } | |
39351103 | 3090 | } |
b70528c7 | 3091 | if (m == MATCH_ERROR) |
3092 | goto error; | |
39351103 | 3093 | |
b70528c7 | 3094 | m = match_implicit_range (); |
39351103 | 3095 | if (m == MATCH_ERROR) |
3096 | goto error; | |
3097 | if (m == MATCH_NO) | |
3098 | goto syntax; | |
3099 | ||
3100 | gfc_gobble_whitespace (); | |
e0be6f02 | 3101 | c = gfc_next_ascii_char (); |
39351103 | 3102 | if ((c != '\n') && (c != ',')) |
3103 | goto syntax; | |
3104 | ||
b70528c7 | 3105 | if (gfc_merge_new_implicit (&ts) != SUCCESS) |
3106 | return MATCH_ERROR; | |
39351103 | 3107 | } |
3108 | while (c == ','); | |
3109 | ||
b70528c7 | 3110 | return MATCH_YES; |
39351103 | 3111 | |
3112 | syntax: | |
3113 | gfc_syntax_error (ST_IMPLICIT); | |
3114 | ||
3115 | error: | |
3116 | return MATCH_ERROR; | |
3117 | } | |
3118 | ||
f6d0e37a | 3119 | |
d67fc9ae | 3120 | match |
3121 | gfc_match_import (void) | |
3122 | { | |
3123 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
3124 | match m; | |
3125 | gfc_symbol *sym; | |
3126 | gfc_symtree *st; | |
3127 | ||
f6d0e37a | 3128 | if (gfc_current_ns->proc_name == NULL |
3129 | || gfc_current_ns->proc_name->attr.if_source != IFSRC_IFBODY) | |
d67fc9ae | 3130 | { |
3131 | gfc_error ("IMPORT statement at %C only permitted in " | |
3132 | "an INTERFACE body"); | |
3133 | return MATCH_ERROR; | |
3134 | } | |
3135 | ||
1a9745d2 | 3136 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: IMPORT statement at %C") |
d67fc9ae | 3137 | == FAILURE) |
3138 | return MATCH_ERROR; | |
3139 | ||
3140 | if (gfc_match_eos () == MATCH_YES) | |
3141 | { | |
3142 | /* All host variables should be imported. */ | |
3143 | gfc_current_ns->has_import_set = 1; | |
3144 | return MATCH_YES; | |
3145 | } | |
3146 | ||
3147 | if (gfc_match (" ::") == MATCH_YES) | |
3148 | { | |
3149 | if (gfc_match_eos () == MATCH_YES) | |
1a9745d2 | 3150 | { |
3151 | gfc_error ("Expecting list of named entities at %C"); | |
3152 | return MATCH_ERROR; | |
3153 | } | |
d67fc9ae | 3154 | } |
3155 | ||
3156 | for(;;) | |
3157 | { | |
495e197c | 3158 | sym = NULL; |
d67fc9ae | 3159 | m = gfc_match (" %n", name); |
3160 | switch (m) | |
3161 | { | |
3162 | case MATCH_YES: | |
096d4ad9 | 3163 | if (gfc_current_ns->parent != NULL |
f6d0e37a | 3164 | && gfc_find_symbol (name, gfc_current_ns->parent, 1, &sym)) |
096d4ad9 | 3165 | { |
3166 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
3167 | return MATCH_ERROR; | |
3168 | } | |
6b010511 | 3169 | else if (!sym && gfc_current_ns->proc_name->ns->parent != NULL |
f6d0e37a | 3170 | && gfc_find_symbol (name, |
3171 | gfc_current_ns->proc_name->ns->parent, | |
3172 | 1, &sym)) | |
1a9745d2 | 3173 | { |
3174 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
3175 | return MATCH_ERROR; | |
3176 | } | |
3177 | ||
3178 | if (sym == NULL) | |
3179 | { | |
3180 | gfc_error ("Cannot IMPORT '%s' from host scoping unit " | |
3181 | "at %C - does not exist.", name); | |
3182 | return MATCH_ERROR; | |
3183 | } | |
3184 | ||
e14bee04 | 3185 | if (gfc_find_symtree (gfc_current_ns->sym_root,name)) |
1a9745d2 | 3186 | { |
3187 | gfc_warning ("'%s' is already IMPORTed from host scoping unit " | |
3188 | "at %C.", name); | |
3189 | goto next_item; | |
3190 | } | |
3191 | ||
a15d1caf | 3192 | st = gfc_new_symtree (&gfc_current_ns->sym_root, sym->name); |
1a9745d2 | 3193 | st->n.sym = sym; |
3194 | sym->refs++; | |
c723595c | 3195 | sym->attr.imported = 1; |
d67fc9ae | 3196 | |
c2958b6b | 3197 | if (sym->attr.generic && (sym = gfc_find_dt_in_generic (sym))) |
3198 | { | |
3199 | /* The actual derived type is stored in a symtree with the first | |
3200 | letter of the name captialized; the symtree with the all | |
3201 | lower-case name contains the associated generic function. */ | |
3202 | st = gfc_new_symtree (&gfc_current_ns->sym_root, | |
3203 | gfc_get_string ("%c%s", | |
3204 | (char) TOUPPER ((unsigned char) sym->name[0]), | |
3205 | &sym->name[1])); | |
3206 | st->n.sym = sym; | |
3207 | sym->refs++; | |
3208 | sym->attr.imported = 1; | |
3209 | } | |
3210 | ||
d67fc9ae | 3211 | goto next_item; |
3212 | ||
3213 | case MATCH_NO: | |
3214 | break; | |
3215 | ||
3216 | case MATCH_ERROR: | |
3217 | return MATCH_ERROR; | |
3218 | } | |
3219 | ||
3220 | next_item: | |
3221 | if (gfc_match_eos () == MATCH_YES) | |
3222 | break; | |
3223 | if (gfc_match_char (',') != MATCH_YES) | |
3224 | goto syntax; | |
3225 | } | |
3226 | ||
3227 | return MATCH_YES; | |
3228 | ||
3229 | syntax: | |
3230 | gfc_error ("Syntax error in IMPORT statement at %C"); | |
3231 | return MATCH_ERROR; | |
3232 | } | |
39351103 | 3233 | |
f6d0e37a | 3234 | |
c72e5f7e | 3235 | /* A minimal implementation of gfc_match without whitespace, escape |
3236 | characters or variable arguments. Returns true if the next | |
3237 | characters match the TARGET template exactly. */ | |
3238 | ||
3239 | static bool | |
3240 | match_string_p (const char *target) | |
3241 | { | |
3242 | const char *p; | |
3243 | ||
3244 | for (p = target; *p; p++) | |
e0be6f02 | 3245 | if ((char) gfc_next_ascii_char () != *p) |
c72e5f7e | 3246 | return false; |
3247 | return true; | |
3248 | } | |
3249 | ||
4ee9c684 | 3250 | /* Matches an attribute specification including array specs. If |
3251 | successful, leaves the variables current_attr and current_as | |
3252 | holding the specification. Also sets the colon_seen variable for | |
3253 | later use by matchers associated with initializations. | |
3254 | ||
3255 | This subroutine is a little tricky in the sense that we don't know | |
3256 | if we really have an attr-spec until we hit the double colon. | |
3257 | Until that time, we can only return MATCH_NO. This forces us to | |
3258 | check for duplicate specification at this level. */ | |
3259 | ||
3260 | static match | |
3261 | match_attr_spec (void) | |
3262 | { | |
4ee9c684 | 3263 | /* Modifiers that can exist in a type statement. */ |
3264 | typedef enum | |
3265 | { GFC_DECL_BEGIN = 0, | |
3266 | DECL_ALLOCATABLE = GFC_DECL_BEGIN, DECL_DIMENSION, DECL_EXTERNAL, | |
3267 | DECL_IN, DECL_OUT, DECL_INOUT, DECL_INTRINSIC, DECL_OPTIONAL, | |
3ea52af3 | 3268 | DECL_PARAMETER, DECL_POINTER, DECL_PROTECTED, DECL_PRIVATE, |
3269 | DECL_PUBLIC, DECL_SAVE, DECL_TARGET, DECL_VALUE, DECL_VOLATILE, | |
b3c3927c | 3270 | DECL_IS_BIND_C, DECL_CODIMENSION, DECL_ASYNCHRONOUS, DECL_CONTIGUOUS, |
3271 | DECL_NONE, GFC_DECL_END /* Sentinel */ | |
4ee9c684 | 3272 | } |
3273 | decl_types; | |
3274 | ||
3275 | /* GFC_DECL_END is the sentinel, index starts at 0. */ | |
3276 | #define NUM_DECL GFC_DECL_END | |
3277 | ||
4ee9c684 | 3278 | locus start, seen_at[NUM_DECL]; |
3279 | int seen[NUM_DECL]; | |
9f1b7d17 | 3280 | unsigned int d; |
4ee9c684 | 3281 | const char *attr; |
3282 | match m; | |
f6bb8f4b | 3283 | gfc_try t; |
4ee9c684 | 3284 | |
3285 | gfc_clear_attr (¤t_attr); | |
cbb9e6aa | 3286 | start = gfc_current_locus; |
4ee9c684 | 3287 | |
3288 | current_as = NULL; | |
3289 | colon_seen = 0; | |
3290 | ||
3291 | /* See if we get all of the keywords up to the final double colon. */ | |
3292 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3293 | seen[d] = 0; | |
3294 | ||
3295 | for (;;) | |
3296 | { | |
e0be6f02 | 3297 | char ch; |
c5d33754 | 3298 | |
c72e5f7e | 3299 | d = DECL_NONE; |
3300 | gfc_gobble_whitespace (); | |
3301 | ||
e0be6f02 | 3302 | ch = gfc_next_ascii_char (); |
c72e5f7e | 3303 | if (ch == ':') |
3304 | { | |
3305 | /* This is the successful exit condition for the loop. */ | |
e0be6f02 | 3306 | if (gfc_next_ascii_char () == ':') |
c72e5f7e | 3307 | break; |
3308 | } | |
3309 | else if (ch == ',') | |
c5d33754 | 3310 | { |
c5d33754 | 3311 | gfc_gobble_whitespace (); |
e0be6f02 | 3312 | switch (gfc_peek_ascii_char ()) |
c5d33754 | 3313 | { |
c72e5f7e | 3314 | case 'a': |
738928be | 3315 | gfc_next_ascii_char (); |
3316 | switch (gfc_next_ascii_char ()) | |
3317 | { | |
3318 | case 'l': | |
3319 | if (match_string_p ("locatable")) | |
3320 | { | |
3321 | /* Matched "allocatable". */ | |
3322 | d = DECL_ALLOCATABLE; | |
3323 | } | |
3324 | break; | |
3325 | ||
3326 | case 's': | |
3327 | if (match_string_p ("ynchronous")) | |
3328 | { | |
3329 | /* Matched "asynchronous". */ | |
3330 | d = DECL_ASYNCHRONOUS; | |
3331 | } | |
3332 | break; | |
3333 | } | |
b3c3927c | 3334 | break; |
c72e5f7e | 3335 | |
3336 | case 'b': | |
c5d33754 | 3337 | /* Try and match the bind(c). */ |
75ae7f6c | 3338 | m = gfc_match_bind_c (NULL, true); |
5cf92482 | 3339 | if (m == MATCH_YES) |
c5d33754 | 3340 | d = DECL_IS_BIND_C; |
5cf92482 | 3341 | else if (m == MATCH_ERROR) |
3342 | goto cleanup; | |
c72e5f7e | 3343 | break; |
3344 | ||
aff518b0 | 3345 | case 'c': |
b3c3927c | 3346 | gfc_next_ascii_char (); |
3347 | if ('o' != gfc_next_ascii_char ()) | |
3348 | break; | |
3349 | switch (gfc_next_ascii_char ()) | |
3350 | { | |
3351 | case 'd': | |
3352 | if (match_string_p ("imension")) | |
3353 | { | |
3354 | d = DECL_CODIMENSION; | |
3355 | break; | |
3356 | } | |
3357 | case 'n': | |
3358 | if (match_string_p ("tiguous")) | |
3359 | { | |
3360 | d = DECL_CONTIGUOUS; | |
3361 | break; | |
3362 | } | |
3363 | } | |
aff518b0 | 3364 | break; |
3365 | ||
c72e5f7e | 3366 | case 'd': |
3367 | if (match_string_p ("dimension")) | |
3368 | d = DECL_DIMENSION; | |
3369 | break; | |
3370 | ||
3371 | case 'e': | |
3372 | if (match_string_p ("external")) | |
3373 | d = DECL_EXTERNAL; | |
3374 | break; | |
3375 | ||
3376 | case 'i': | |
3377 | if (match_string_p ("int")) | |
3378 | { | |
e0be6f02 | 3379 | ch = gfc_next_ascii_char (); |
c72e5f7e | 3380 | if (ch == 'e') |
3381 | { | |
3382 | if (match_string_p ("nt")) | |
3383 | { | |
3384 | /* Matched "intent". */ | |
3385 | /* TODO: Call match_intent_spec from here. */ | |
3386 | if (gfc_match (" ( in out )") == MATCH_YES) | |
3387 | d = DECL_INOUT; | |
3388 | else if (gfc_match (" ( in )") == MATCH_YES) | |
3389 | d = DECL_IN; | |
3390 | else if (gfc_match (" ( out )") == MATCH_YES) | |
3391 | d = DECL_OUT; | |
3392 | } | |
3393 | } | |
3394 | else if (ch == 'r') | |
3395 | { | |
3396 | if (match_string_p ("insic")) | |
3397 | { | |
3398 | /* Matched "intrinsic". */ | |
3399 | d = DECL_INTRINSIC; | |
3400 | } | |
3401 | } | |
3402 | } | |
3403 | break; | |
3404 | ||
3405 | case 'o': | |
3406 | if (match_string_p ("optional")) | |
3407 | d = DECL_OPTIONAL; | |
3408 | break; | |
3409 | ||
3410 | case 'p': | |
e0be6f02 | 3411 | gfc_next_ascii_char (); |
3412 | switch (gfc_next_ascii_char ()) | |
c72e5f7e | 3413 | { |
3414 | case 'a': | |
3415 | if (match_string_p ("rameter")) | |
3416 | { | |
3417 | /* Matched "parameter". */ | |
3418 | d = DECL_PARAMETER; | |
3419 | } | |
3420 | break; | |
3421 | ||
3422 | case 'o': | |
3423 | if (match_string_p ("inter")) | |
3424 | { | |
3425 | /* Matched "pointer". */ | |
3426 | d = DECL_POINTER; | |
3427 | } | |
3428 | break; | |
3429 | ||
3430 | case 'r': | |
e0be6f02 | 3431 | ch = gfc_next_ascii_char (); |
c72e5f7e | 3432 | if (ch == 'i') |
3433 | { | |
3434 | if (match_string_p ("vate")) | |
3435 | { | |
3436 | /* Matched "private". */ | |
3437 | d = DECL_PRIVATE; | |
3438 | } | |
3439 | } | |
3440 | else if (ch == 'o') | |
3441 | { | |
3442 | if (match_string_p ("tected")) | |
3443 | { | |
3444 | /* Matched "protected". */ | |
3445 | d = DECL_PROTECTED; | |
3446 | } | |
3447 | } | |
3448 | break; | |
3449 | ||
3450 | case 'u': | |
3451 | if (match_string_p ("blic")) | |
3452 | { | |
3453 | /* Matched "public". */ | |
3454 | d = DECL_PUBLIC; | |
3455 | } | |
3456 | break; | |
3457 | } | |
3458 | break; | |
3459 | ||
3460 | case 's': | |
3461 | if (match_string_p ("save")) | |
3462 | d = DECL_SAVE; | |
3463 | break; | |
3464 | ||
3465 | case 't': | |
3466 | if (match_string_p ("target")) | |
3467 | d = DECL_TARGET; | |
3468 | break; | |
3469 | ||
3470 | case 'v': | |
e0be6f02 | 3471 | gfc_next_ascii_char (); |
3472 | ch = gfc_next_ascii_char (); | |
c72e5f7e | 3473 | if (ch == 'a') |
3474 | { | |
3475 | if (match_string_p ("lue")) | |
3476 | { | |
3477 | /* Matched "value". */ | |
3478 | d = DECL_VALUE; | |
3479 | } | |
3480 | } | |
3481 | else if (ch == 'o') | |
3482 | { | |
3483 | if (match_string_p ("latile")) | |
3484 | { | |
3485 | /* Matched "volatile". */ | |
3486 | d = DECL_VOLATILE; | |
3487 | } | |
3488 | } | |
3489 | break; | |
c5d33754 | 3490 | } |
3491 | } | |
f3f9b222 | 3492 | |
c72e5f7e | 3493 | /* No double colon and no recognizable decl_type, so assume that |
3494 | we've been looking at something else the whole time. */ | |
3495 | if (d == DECL_NONE) | |
3496 | { | |
3497 | m = MATCH_NO; | |
3498 | goto cleanup; | |
3499 | } | |
e14bee04 | 3500 | |
7e221851 | 3501 | /* Check to make sure any parens are paired up correctly. */ |
3502 | if (gfc_match_parens () == MATCH_ERROR) | |
3503 | { | |
3504 | m = MATCH_ERROR; | |
3505 | goto cleanup; | |
3506 | } | |
3507 | ||
4ee9c684 | 3508 | seen[d]++; |
cbb9e6aa | 3509 | seen_at[d] = gfc_current_locus; |
4ee9c684 | 3510 | |
e97ac7c0 | 3511 | if (d == DECL_DIMENSION || d == DECL_CODIMENSION) |
4ee9c684 | 3512 | { |
e97ac7c0 | 3513 | gfc_array_spec *as = NULL; |
4ee9c684 | 3514 | |
e97ac7c0 | 3515 | m = gfc_match_array_spec (&as, d == DECL_DIMENSION, |
3516 | d == DECL_CODIMENSION); | |
3517 | ||
3518 | if (current_as == NULL) | |
3519 | current_as = as; | |
3520 | else if (m == MATCH_YES) | |
4ee9c684 | 3521 | { |
e97ac7c0 | 3522 | merge_array_spec (as, current_as, false); |
434f0922 | 3523 | free (as); |
4ee9c684 | 3524 | } |
3525 | ||
aff518b0 | 3526 | if (m == MATCH_NO) |
3527 | { | |
e97ac7c0 | 3528 | if (d == DECL_CODIMENSION) |
3529 | gfc_error ("Missing codimension specification at %C"); | |
3530 | else | |
3531 | gfc_error ("Missing dimension specification at %C"); | |
aff518b0 | 3532 | m = MATCH_ERROR; |
3533 | } | |
3534 | ||
3535 | if (m == MATCH_ERROR) | |
3536 | goto cleanup; | |
3537 | } | |
4ee9c684 | 3538 | } |
3539 | ||
4ee9c684 | 3540 | /* Since we've seen a double colon, we have to be looking at an |
3541 | attr-spec. This means that we can now issue errors. */ | |
3542 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3543 | if (seen[d] > 1) | |
3544 | { | |
3545 | switch (d) | |
3546 | { | |
3547 | case DECL_ALLOCATABLE: | |
3548 | attr = "ALLOCATABLE"; | |
3549 | break; | |
738928be | 3550 | case DECL_ASYNCHRONOUS: |
3551 | attr = "ASYNCHRONOUS"; | |
3552 | break; | |
aff518b0 | 3553 | case DECL_CODIMENSION: |
3554 | attr = "CODIMENSION"; | |
3555 | break; | |
b3c3927c | 3556 | case DECL_CONTIGUOUS: |
3557 | attr = "CONTIGUOUS"; | |
3558 | break; | |
4ee9c684 | 3559 | case DECL_DIMENSION: |
3560 | attr = "DIMENSION"; | |
3561 | break; | |
3562 | case DECL_EXTERNAL: | |
3563 | attr = "EXTERNAL"; | |
3564 | break; | |
3565 | case DECL_IN: | |
3566 | attr = "INTENT (IN)"; | |
3567 | break; | |
3568 | case DECL_OUT: | |
3569 | attr = "INTENT (OUT)"; | |
3570 | break; | |
3571 | case DECL_INOUT: | |
3572 | attr = "INTENT (IN OUT)"; | |
3573 | break; | |
3574 | case DECL_INTRINSIC: | |
3575 | attr = "INTRINSIC"; | |
3576 | break; | |
3577 | case DECL_OPTIONAL: | |
3578 | attr = "OPTIONAL"; | |
3579 | break; | |
3580 | case DECL_PARAMETER: | |
3581 | attr = "PARAMETER"; | |
3582 | break; | |
3583 | case DECL_POINTER: | |
3584 | attr = "POINTER"; | |
3585 | break; | |
3ea52af3 | 3586 | case DECL_PROTECTED: |
3587 | attr = "PROTECTED"; | |
3588 | break; | |
4ee9c684 | 3589 | case DECL_PRIVATE: |
3590 | attr = "PRIVATE"; | |
3591 | break; | |
3592 | case DECL_PUBLIC: | |
3593 | attr = "PUBLIC"; | |
3594 | break; | |
3595 | case DECL_SAVE: | |
3596 | attr = "SAVE"; | |
3597 | break; | |
3598 | case DECL_TARGET: | |
3599 | attr = "TARGET"; | |
3600 | break; | |
c5d33754 | 3601 | case DECL_IS_BIND_C: |
3602 | attr = "IS_BIND_C"; | |
3603 | break; | |
3604 | case DECL_VALUE: | |
3605 | attr = "VALUE"; | |
3606 | break; | |
ef814c81 | 3607 | case DECL_VOLATILE: |
3608 | attr = "VOLATILE"; | |
3609 | break; | |
4ee9c684 | 3610 | default: |
f6d0e37a | 3611 | attr = NULL; /* This shouldn't happen. */ |
4ee9c684 | 3612 | } |
3613 | ||
3614 | gfc_error ("Duplicate %s attribute at %L", attr, &seen_at[d]); | |
3615 | m = MATCH_ERROR; | |
3616 | goto cleanup; | |
3617 | } | |
3618 | ||
3619 | /* Now that we've dealt with duplicate attributes, add the attributes | |
3620 | to the current attribute. */ | |
3621 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3622 | { | |
3623 | if (seen[d] == 0) | |
3624 | continue; | |
3625 | ||
3626 | if (gfc_current_state () == COMP_DERIVED | |
aff518b0 | 3627 | && d != DECL_DIMENSION && d != DECL_CODIMENSION |
3628 | && d != DECL_POINTER && d != DECL_PRIVATE | |
b3c3927c | 3629 | && d != DECL_PUBLIC && d != DECL_CONTIGUOUS && d != DECL_NONE) |
4ee9c684 | 3630 | { |
2294b616 | 3631 | if (d == DECL_ALLOCATABLE) |
3632 | { | |
1a9745d2 | 3633 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: ALLOCATABLE " |
3634 | "attribute at %C in a TYPE definition") | |
e14bee04 | 3635 | == FAILURE) |
2294b616 | 3636 | { |
3637 | m = MATCH_ERROR; | |
3638 | goto cleanup; | |
3639 | } | |
1a9745d2 | 3640 | } |
3641 | else | |
2294b616 | 3642 | { |
3643 | gfc_error ("Attribute at %L is not allowed in a TYPE definition", | |
e14bee04 | 3644 | &seen_at[d]); |
2294b616 | 3645 | m = MATCH_ERROR; |
3646 | goto cleanup; | |
3647 | } | |
4ee9c684 | 3648 | } |
3649 | ||
ea13b9b7 | 3650 | if ((d == DECL_PRIVATE || d == DECL_PUBLIC) |
1a9745d2 | 3651 | && gfc_current_state () != COMP_MODULE) |
ea13b9b7 | 3652 | { |
3653 | if (d == DECL_PRIVATE) | |
3654 | attr = "PRIVATE"; | |
3655 | else | |
3656 | attr = "PUBLIC"; | |
e14bee04 | 3657 | if (gfc_current_state () == COMP_DERIVED |
3658 | && gfc_state_stack->previous | |
3659 | && gfc_state_stack->previous->state == COMP_MODULE) | |
3660 | { | |
3661 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: Attribute %s " | |
3662 | "at %L in a TYPE definition", attr, | |
3663 | &seen_at[d]) | |
3664 | == FAILURE) | |
3665 | { | |
3666 | m = MATCH_ERROR; | |
3667 | goto cleanup; | |
3668 | } | |
3669 | } | |
3670 | else | |
3671 | { | |
3672 | gfc_error ("%s attribute at %L is not allowed outside of the " | |
3673 | "specification part of a module", attr, &seen_at[d]); | |
3674 | m = MATCH_ERROR; | |
3675 | goto cleanup; | |
3676 | } | |
ea13b9b7 | 3677 | } |
3678 | ||
4ee9c684 | 3679 | switch (d) |
3680 | { | |
3681 | case DECL_ALLOCATABLE: | |
3682 | t = gfc_add_allocatable (¤t_attr, &seen_at[d]); | |
3683 | break; | |
3684 | ||
738928be | 3685 | case DECL_ASYNCHRONOUS: |
3686 | if (gfc_notify_std (GFC_STD_F2003, | |
3687 | "Fortran 2003: ASYNCHRONOUS attribute at %C") | |
3688 | == FAILURE) | |
3689 | t = FAILURE; | |
3690 | else | |
3691 | t = gfc_add_asynchronous (¤t_attr, NULL, &seen_at[d]); | |
3692 | break; | |
3693 | ||
aff518b0 | 3694 | case DECL_CODIMENSION: |
3695 | t = gfc_add_codimension (¤t_attr, NULL, &seen_at[d]); | |
3696 | break; | |
3697 | ||
b3c3927c | 3698 | case DECL_CONTIGUOUS: |
3699 | if (gfc_notify_std (GFC_STD_F2008, | |
3700 | "Fortran 2008: CONTIGUOUS attribute at %C") | |
3701 | == FAILURE) | |
3702 | t = FAILURE; | |
3703 | else | |
3704 | t = gfc_add_contiguous (¤t_attr, NULL, &seen_at[d]); | |
3705 | break; | |
3706 | ||
4ee9c684 | 3707 | case DECL_DIMENSION: |
950683ed | 3708 | t = gfc_add_dimension (¤t_attr, NULL, &seen_at[d]); |
4ee9c684 | 3709 | break; |
3710 | ||
3711 | case DECL_EXTERNAL: | |
3712 | t = gfc_add_external (¤t_attr, &seen_at[d]); | |
3713 | break; | |
3714 | ||
3715 | case DECL_IN: | |
3716 | t = gfc_add_intent (¤t_attr, INTENT_IN, &seen_at[d]); | |
3717 | break; | |
3718 | ||
3719 | case DECL_OUT: | |
3720 | t = gfc_add_intent (¤t_attr, INTENT_OUT, &seen_at[d]); | |
3721 | break; | |
3722 | ||
3723 | case DECL_INOUT: | |
3724 | t = gfc_add_intent (¤t_attr, INTENT_INOUT, &seen_at[d]); | |
3725 | break; | |
3726 | ||
3727 | case DECL_INTRINSIC: | |
3728 | t = gfc_add_intrinsic (¤t_attr, &seen_at[d]); | |
3729 | break; | |
3730 | ||
3731 | case DECL_OPTIONAL: | |
3732 | t = gfc_add_optional (¤t_attr, &seen_at[d]); | |
3733 | break; | |
3734 | ||
3735 | case DECL_PARAMETER: | |
950683ed | 3736 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, &seen_at[d]); |
4ee9c684 | 3737 | break; |
3738 | ||
3739 | case DECL_POINTER: | |
3740 | t = gfc_add_pointer (¤t_attr, &seen_at[d]); | |
3741 | break; | |
3742 | ||
3ea52af3 | 3743 | case DECL_PROTECTED: |
3744 | if (gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
3745 | { | |
3746 | gfc_error ("PROTECTED at %C only allowed in specification " | |
3747 | "part of a module"); | |
3748 | t = FAILURE; | |
3749 | break; | |
3750 | } | |
3751 | ||
1a9745d2 | 3752 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: PROTECTED " |
3753 | "attribute at %C") | |
3ea52af3 | 3754 | == FAILURE) |
3755 | t = FAILURE; | |
3756 | else | |
3757 | t = gfc_add_protected (¤t_attr, NULL, &seen_at[d]); | |
3758 | break; | |
3759 | ||
4ee9c684 | 3760 | case DECL_PRIVATE: |
950683ed | 3761 | t = gfc_add_access (¤t_attr, ACCESS_PRIVATE, NULL, |
3762 | &seen_at[d]); | |
4ee9c684 | 3763 | break; |
3764 | ||
3765 | case DECL_PUBLIC: | |
950683ed | 3766 | t = gfc_add_access (¤t_attr, ACCESS_PUBLIC, NULL, |
3767 | &seen_at[d]); | |
4ee9c684 | 3768 | break; |
3769 | ||
3770 | case DECL_SAVE: | |
23d075f4 | 3771 | t = gfc_add_save (¤t_attr, SAVE_EXPLICIT, NULL, &seen_at[d]); |
4ee9c684 | 3772 | break; |
3773 | ||
3774 | case DECL_TARGET: | |
3775 | t = gfc_add_target (¤t_attr, &seen_at[d]); | |
3776 | break; | |
3777 | ||
c5d33754 | 3778 | case DECL_IS_BIND_C: |
3779 | t = gfc_add_is_bind_c(¤t_attr, NULL, &seen_at[d], 0); | |
3780 | break; | |
3781 | ||
8f6339b6 | 3782 | case DECL_VALUE: |
1a9745d2 | 3783 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: VALUE attribute " |
3784 | "at %C") | |
8f6339b6 | 3785 | == FAILURE) |
3786 | t = FAILURE; | |
3787 | else | |
3788 | t = gfc_add_value (¤t_attr, NULL, &seen_at[d]); | |
3789 | break; | |
3790 | ||
ef814c81 | 3791 | case DECL_VOLATILE: |
3792 | if (gfc_notify_std (GFC_STD_F2003, | |
1a9745d2 | 3793 | "Fortran 2003: VOLATILE attribute at %C") |
ef814c81 | 3794 | == FAILURE) |
3795 | t = FAILURE; | |
3796 | else | |
3797 | t = gfc_add_volatile (¤t_attr, NULL, &seen_at[d]); | |
3798 | break; | |
3799 | ||
4ee9c684 | 3800 | default: |
3801 | gfc_internal_error ("match_attr_spec(): Bad attribute"); | |
3802 | } | |
3803 | ||
3804 | if (t == FAILURE) | |
3805 | { | |
3806 | m = MATCH_ERROR; | |
3807 | goto cleanup; | |
3808 | } | |
3809 | } | |
3810 | ||
23d075f4 | 3811 | /* Module variables implicitly have the SAVE attribute. */ |
3812 | if (gfc_current_state () == COMP_MODULE && !current_attr.save) | |
3813 | current_attr.save = SAVE_IMPLICIT; | |
3814 | ||
4ee9c684 | 3815 | colon_seen = 1; |
3816 | return MATCH_YES; | |
3817 | ||
3818 | cleanup: | |
cbb9e6aa | 3819 | gfc_current_locus = start; |
4ee9c684 | 3820 | gfc_free_array_spec (current_as); |
3821 | current_as = NULL; | |
3822 | return m; | |
3823 | } | |
3824 | ||
3825 | ||
c5d33754 | 3826 | /* Set the binding label, dest_label, either with the binding label |
3827 | stored in the given gfc_typespec, ts, or if none was provided, it | |
3828 | will be the symbol name in all lower case, as required by the draft | |
3829 | (J3/04-007, section 15.4.1). If a binding label was given and | |
3830 | there is more than one argument (num_idents), it is an error. */ | |
3831 | ||
7b2060ba | 3832 | static gfc_try |
1d8a57d8 | 3833 | set_binding_label (const char **dest_label, const char *sym_name, |
3834 | int num_idents) | |
c5d33754 | 3835 | { |
825718f9 | 3836 | if (num_idents > 1 && has_name_equals) |
c5d33754 | 3837 | { |
825718f9 | 3838 | gfc_error ("Multiple identifiers provided with " |
3839 | "single NAME= specifier at %C"); | |
3840 | return FAILURE; | |
3841 | } | |
c5d33754 | 3842 | |
7b2060ba | 3843 | if (curr_binding_label) |
3844 | /* Binding label given; store in temp holder til have sym. */ | |
3845 | *dest_label = curr_binding_label; | |
c5d33754 | 3846 | else |
3847 | { | |
3848 | /* No binding label given, and the NAME= specifier did not exist, | |
3849 | which means there was no NAME="". */ | |
3850 | if (sym_name != NULL && has_name_equals == 0) | |
7b2060ba | 3851 | *dest_label = IDENTIFIER_POINTER (get_identifier (sym_name)); |
c5d33754 | 3852 | } |
3853 | ||
3854 | return SUCCESS; | |
3855 | } | |
3856 | ||
3857 | ||
3858 | /* Set the status of the given common block as being BIND(C) or not, | |
3859 | depending on the given parameter, is_bind_c. */ | |
3860 | ||
3861 | void | |
3862 | set_com_block_bind_c (gfc_common_head *com_block, int is_bind_c) | |
3863 | { | |
3864 | com_block->is_bind_c = is_bind_c; | |
3865 | return; | |
3866 | } | |
3867 | ||
3868 | ||
3869 | /* Verify that the given gfc_typespec is for a C interoperable type. */ | |
3870 | ||
f6bb8f4b | 3871 | gfc_try |
2564c57a | 3872 | gfc_verify_c_interop (gfc_typespec *ts) |
c5d33754 | 3873 | { |
eeebe20b | 3874 | if (ts->type == BT_DERIVED && ts->u.derived != NULL) |
5f9b1308 | 3875 | return (ts->u.derived->ts.is_c_interop || ts->u.derived->attr.is_bind_c) |
3876 | ? SUCCESS : FAILURE; | |
2564c57a | 3877 | else if (ts->type == BT_CLASS) |
3878 | return FAILURE; | |
8c2d8d6d | 3879 | else if (ts->is_c_interop != 1 && ts->type != BT_ASSUMED) |
c5d33754 | 3880 | return FAILURE; |
8c2d8d6d | 3881 | |
c5d33754 | 3882 | return SUCCESS; |
3883 | } | |
3884 | ||
3885 | ||
3886 | /* Verify that the variables of a given common block, which has been | |
3887 | defined with the attribute specifier bind(c), to be of a C | |
3888 | interoperable type. Errors will be reported here, if | |
3889 | encountered. */ | |
3890 | ||
f6bb8f4b | 3891 | gfc_try |
c5d33754 | 3892 | verify_com_block_vars_c_interop (gfc_common_head *com_block) |
3893 | { | |
3894 | gfc_symbol *curr_sym = NULL; | |
f6bb8f4b | 3895 | gfc_try retval = SUCCESS; |
c5d33754 | 3896 | |
3897 | curr_sym = com_block->head; | |
3898 | ||
3899 | /* Make sure we have at least one symbol. */ | |
3900 | if (curr_sym == NULL) | |
3901 | return retval; | |
3902 | ||
3903 | /* Here we know we have a symbol, so we'll execute this loop | |
3904 | at least once. */ | |
3905 | do | |
3906 | { | |
3907 | /* The second to last param, 1, says this is in a common block. */ | |
3908 | retval = verify_bind_c_sym (curr_sym, &(curr_sym->ts), 1, com_block); | |
3909 | curr_sym = curr_sym->common_next; | |
3910 | } while (curr_sym != NULL); | |
3911 | ||
3912 | return retval; | |
3913 | } | |
3914 | ||
3915 | ||
3916 | /* Verify that a given BIND(C) symbol is C interoperable. If it is not, | |
3917 | an appropriate error message is reported. */ | |
3918 | ||
f6bb8f4b | 3919 | gfc_try |
c5d33754 | 3920 | verify_bind_c_sym (gfc_symbol *tmp_sym, gfc_typespec *ts, |
3921 | int is_in_common, gfc_common_head *com_block) | |
3922 | { | |
1f2ab120 | 3923 | bool bind_c_function = false; |
f6bb8f4b | 3924 | gfc_try retval = SUCCESS; |
4f7bb9ec | 3925 | |
1f2ab120 | 3926 | if (tmp_sym->attr.function && tmp_sym->attr.is_bind_c) |
3927 | bind_c_function = true; | |
3928 | ||
4f7bb9ec | 3929 | if (tmp_sym->attr.function && tmp_sym->result != NULL) |
3930 | { | |
3931 | tmp_sym = tmp_sym->result; | |
3932 | /* Make sure it wasn't an implicitly typed result. */ | |
8e618001 | 3933 | if (tmp_sym->attr.implicit_type && gfc_option.warn_c_binding_type) |
4f7bb9ec | 3934 | { |
3935 | gfc_warning ("Implicitly declared BIND(C) function '%s' at " | |
3936 | "%L may not be C interoperable", tmp_sym->name, | |
3937 | &tmp_sym->declared_at); | |
3938 | tmp_sym->ts.f90_type = tmp_sym->ts.type; | |
3939 | /* Mark it as C interoperable to prevent duplicate warnings. */ | |
3940 | tmp_sym->ts.is_c_interop = 1; | |
3941 | tmp_sym->attr.is_c_interop = 1; | |
3942 | } | |
3943 | } | |
1f2ab120 | 3944 | |
c5d33754 | 3945 | /* Here, we know we have the bind(c) attribute, so if we have |
3946 | enough type info, then verify that it's a C interop kind. | |
3947 | The info could be in the symbol already, or possibly still in | |
3948 | the given ts (current_ts), so look in both. */ | |
3949 | if (tmp_sym->ts.type != BT_UNKNOWN || ts->type != BT_UNKNOWN) | |
3950 | { | |
2564c57a | 3951 | if (gfc_verify_c_interop (&(tmp_sym->ts)) != SUCCESS) |
c5d33754 | 3952 | { |
3953 | /* See if we're dealing with a sym in a common block or not. */ | |
8e618001 | 3954 | if (is_in_common == 1 && gfc_option.warn_c_binding_type) |
c5d33754 | 3955 | { |
3956 | gfc_warning ("Variable '%s' in common block '%s' at %L " | |
3957 | "may not be a C interoperable " | |
3958 | "kind though common block '%s' is BIND(C)", | |
3959 | tmp_sym->name, com_block->name, | |
3960 | &(tmp_sym->declared_at), com_block->name); | |
3961 | } | |
3962 | else | |
3963 | { | |
3964 | if (tmp_sym->ts.type == BT_DERIVED || ts->type == BT_DERIVED) | |
3965 | gfc_error ("Type declaration '%s' at %L is not C " | |
3966 | "interoperable but it is BIND(C)", | |
3967 | tmp_sym->name, &(tmp_sym->declared_at)); | |
8e618001 | 3968 | else if (gfc_option.warn_c_binding_type) |
c5d33754 | 3969 | gfc_warning ("Variable '%s' at %L " |
3970 | "may not be a C interoperable " | |
3971 | "kind but it is bind(c)", | |
3972 | tmp_sym->name, &(tmp_sym->declared_at)); | |
3973 | } | |
3974 | } | |
3975 | ||
3976 | /* Variables declared w/in a common block can't be bind(c) | |
3977 | since there's no way for C to see these variables, so there's | |
3978 | semantically no reason for the attribute. */ | |
3979 | if (is_in_common == 1 && tmp_sym->attr.is_bind_c == 1) | |
3980 | { | |
3981 | gfc_error ("Variable '%s' in common block '%s' at " | |
3982 | "%L cannot be declared with BIND(C) " | |
3983 | "since it is not a global", | |
3984 | tmp_sym->name, com_block->name, | |
3985 | &(tmp_sym->declared_at)); | |
3986 | retval = FAILURE; | |
3987 | } | |
3988 | ||
3989 | /* Scalar variables that are bind(c) can not have the pointer | |
3990 | or allocatable attributes. */ | |
3991 | if (tmp_sym->attr.is_bind_c == 1) | |
3992 | { | |
3993 | if (tmp_sym->attr.pointer == 1) | |
3994 | { | |
3995 | gfc_error ("Variable '%s' at %L cannot have both the " | |
3996 | "POINTER and BIND(C) attributes", | |
3997 | tmp_sym->name, &(tmp_sym->declared_at)); | |
3998 | retval = FAILURE; | |
3999 | } | |
4000 | ||
4001 | if (tmp_sym->attr.allocatable == 1) | |
4002 | { | |
4003 | gfc_error ("Variable '%s' at %L cannot have both the " | |
4004 | "ALLOCATABLE and BIND(C) attributes", | |
4005 | tmp_sym->name, &(tmp_sym->declared_at)); | |
4006 | retval = FAILURE; | |
4007 | } | |
4008 | ||
1f2ab120 | 4009 | } |
4010 | ||
4011 | /* If it is a BIND(C) function, make sure the return value is a | |
4012 | scalar value. The previous tests in this function made sure | |
4013 | the type is interoperable. */ | |
4014 | if (bind_c_function && tmp_sym->as != NULL) | |
4015 | gfc_error ("Return type of BIND(C) function '%s' at %L cannot " | |
4016 | "be an array", tmp_sym->name, &(tmp_sym->declared_at)); | |
4017 | ||
4018 | /* BIND(C) functions can not return a character string. */ | |
4019 | if (bind_c_function && tmp_sym->ts.type == BT_CHARACTER) | |
eeebe20b | 4020 | if (tmp_sym->ts.u.cl == NULL || tmp_sym->ts.u.cl->length == NULL |
4021 | || tmp_sym->ts.u.cl->length->expr_type != EXPR_CONSTANT | |
4022 | || mpz_cmp_si (tmp_sym->ts.u.cl->length->value.integer, 1) != 0) | |
1f2ab120 | 4023 | gfc_error ("Return type of BIND(C) function '%s' at %L cannot " |
c5d33754 | 4024 | "be a character string", tmp_sym->name, |
4025 | &(tmp_sym->declared_at)); | |
c5d33754 | 4026 | } |
4027 | ||
4028 | /* See if the symbol has been marked as private. If it has, make sure | |
4029 | there is no binding label and warn the user if there is one. */ | |
4030 | if (tmp_sym->attr.access == ACCESS_PRIVATE | |
7b2060ba | 4031 | && tmp_sym->binding_label) |
c5d33754 | 4032 | /* Use gfc_warning_now because we won't say that the symbol fails |
4033 | just because of this. */ | |
4034 | gfc_warning_now ("Symbol '%s' at %L is marked PRIVATE but has been " | |
4035 | "given the binding label '%s'", tmp_sym->name, | |
4036 | &(tmp_sym->declared_at), tmp_sym->binding_label); | |
4037 | ||
4038 | return retval; | |
4039 | } | |
4040 | ||
4041 | ||
4042 | /* Set the appropriate fields for a symbol that's been declared as | |
4043 | BIND(C) (the is_bind_c flag and the binding label), and verify that | |
4044 | the type is C interoperable. Errors are reported by the functions | |
4045 | used to set/test these fields. */ | |
4046 | ||
f6bb8f4b | 4047 | gfc_try |
c5d33754 | 4048 | set_verify_bind_c_sym (gfc_symbol *tmp_sym, int num_idents) |
4049 | { | |
f6bb8f4b | 4050 | gfc_try retval = SUCCESS; |
c5d33754 | 4051 | |
4052 | /* TODO: Do we need to make sure the vars aren't marked private? */ | |
4053 | ||
4054 | /* Set the is_bind_c bit in symbol_attribute. */ | |
4055 | gfc_add_is_bind_c (&(tmp_sym->attr), tmp_sym->name, &gfc_current_locus, 0); | |
4056 | ||
7b2060ba | 4057 | if (set_binding_label (&tmp_sym->binding_label, tmp_sym->name, |
c5d33754 | 4058 | num_idents) != SUCCESS) |
4059 | return FAILURE; | |
4060 | ||
4061 | return retval; | |
4062 | } | |
4063 | ||
4064 | ||
4065 | /* Set the fields marking the given common block as BIND(C), including | |
4066 | a binding label, and report any errors encountered. */ | |
4067 | ||
f6bb8f4b | 4068 | gfc_try |
c5d33754 | 4069 | set_verify_bind_c_com_block (gfc_common_head *com_block, int num_idents) |
4070 | { | |
f6bb8f4b | 4071 | gfc_try retval = SUCCESS; |
c5d33754 | 4072 | |
4073 | /* destLabel, common name, typespec (which may have binding label). */ | |
7b2060ba | 4074 | if (set_binding_label (&com_block->binding_label, com_block->name, |
4075 | num_idents) | |
c5d33754 | 4076 | != SUCCESS) |
4077 | return FAILURE; | |
4078 | ||
4079 | /* Set the given common block (com_block) to being bind(c) (1). */ | |
4080 | set_com_block_bind_c (com_block, 1); | |
4081 | ||
4082 | return retval; | |
4083 | } | |
4084 | ||
4085 | ||
4086 | /* Retrieve the list of one or more identifiers that the given bind(c) | |
4087 | attribute applies to. */ | |
4088 | ||
f6bb8f4b | 4089 | gfc_try |
c5d33754 | 4090 | get_bind_c_idents (void) |
4091 | { | |
4092 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4093 | int num_idents = 0; | |
4094 | gfc_symbol *tmp_sym = NULL; | |
4095 | match found_id; | |
4096 | gfc_common_head *com_block = NULL; | |
4097 | ||
4098 | if (gfc_match_name (name) == MATCH_YES) | |
4099 | { | |
4100 | found_id = MATCH_YES; | |
4101 | gfc_get_ha_symbol (name, &tmp_sym); | |
4102 | } | |
4103 | else if (match_common_name (name) == MATCH_YES) | |
4104 | { | |
4105 | found_id = MATCH_YES; | |
4106 | com_block = gfc_get_common (name, 0); | |
4107 | } | |
4108 | else | |
4109 | { | |
4110 | gfc_error ("Need either entity or common block name for " | |
4111 | "attribute specification statement at %C"); | |
4112 | return FAILURE; | |
4113 | } | |
4114 | ||
4115 | /* Save the current identifier and look for more. */ | |
4116 | do | |
4117 | { | |
4118 | /* Increment the number of identifiers found for this spec stmt. */ | |
4119 | num_idents++; | |
4120 | ||
4121 | /* Make sure we have a sym or com block, and verify that it can | |
4122 | be bind(c). Set the appropriate field(s) and look for more | |
4123 | identifiers. */ | |
4124 | if (tmp_sym != NULL || com_block != NULL) | |
4125 | { | |
4126 | if (tmp_sym != NULL) | |
4127 | { | |
4128 | if (set_verify_bind_c_sym (tmp_sym, num_idents) | |
4129 | != SUCCESS) | |
4130 | return FAILURE; | |
4131 | } | |
4132 | else | |
4133 | { | |
4134 | if (set_verify_bind_c_com_block(com_block, num_idents) | |
4135 | != SUCCESS) | |
4136 | return FAILURE; | |
4137 | } | |
4138 | ||
4139 | /* Look to see if we have another identifier. */ | |
4140 | tmp_sym = NULL; | |
4141 | if (gfc_match_eos () == MATCH_YES) | |
4142 | found_id = MATCH_NO; | |
4143 | else if (gfc_match_char (',') != MATCH_YES) | |
4144 | found_id = MATCH_NO; | |
4145 | else if (gfc_match_name (name) == MATCH_YES) | |
4146 | { | |
4147 | found_id = MATCH_YES; | |
4148 | gfc_get_ha_symbol (name, &tmp_sym); | |
4149 | } | |
4150 | else if (match_common_name (name) == MATCH_YES) | |
4151 | { | |
4152 | found_id = MATCH_YES; | |
4153 | com_block = gfc_get_common (name, 0); | |
4154 | } | |
4155 | else | |
4156 | { | |
4157 | gfc_error ("Missing entity or common block name for " | |
4158 | "attribute specification statement at %C"); | |
4159 | return FAILURE; | |
4160 | } | |
4161 | } | |
4162 | else | |
4163 | { | |
4164 | gfc_internal_error ("Missing symbol"); | |
4165 | } | |
4166 | } while (found_id == MATCH_YES); | |
4167 | ||
4168 | /* if we get here we were successful */ | |
4169 | return SUCCESS; | |
4170 | } | |
4171 | ||
4172 | ||
4173 | /* Try and match a BIND(C) attribute specification statement. */ | |
4174 | ||
4175 | match | |
4176 | gfc_match_bind_c_stmt (void) | |
4177 | { | |
4178 | match found_match = MATCH_NO; | |
4179 | gfc_typespec *ts; | |
4180 | ||
4181 | ts = ¤t_ts; | |
4182 | ||
4183 | /* This may not be necessary. */ | |
4184 | gfc_clear_ts (ts); | |
4185 | /* Clear the temporary binding label holder. */ | |
7b2060ba | 4186 | curr_binding_label = NULL; |
c5d33754 | 4187 | |
4188 | /* Look for the bind(c). */ | |
75ae7f6c | 4189 | found_match = gfc_match_bind_c (NULL, true); |
c5d33754 | 4190 | |
4191 | if (found_match == MATCH_YES) | |
4192 | { | |
4193 | /* Look for the :: now, but it is not required. */ | |
4194 | gfc_match (" :: "); | |
4195 | ||
4196 | /* Get the identifier(s) that needs to be updated. This may need to | |
4197 | change to hand the flag(s) for the attr specified so all identifiers | |
4198 | found can have all appropriate parts updated (assuming that the same | |
4199 | spec stmt can have multiple attrs, such as both bind(c) and | |
4200 | allocatable...). */ | |
4201 | if (get_bind_c_idents () != SUCCESS) | |
4202 | /* Error message should have printed already. */ | |
4203 | return MATCH_ERROR; | |
4204 | } | |
4205 | ||
4206 | return found_match; | |
4207 | } | |
4208 | ||
4209 | ||
4ee9c684 | 4210 | /* Match a data declaration statement. */ |
4211 | ||
4212 | match | |
4213 | gfc_match_data_decl (void) | |
4214 | { | |
4215 | gfc_symbol *sym; | |
4216 | match m; | |
3923b69f | 4217 | int elem; |
4ee9c684 | 4218 | |
c5d33754 | 4219 | num_idents_on_line = 0; |
4220 | ||
e8152f13 | 4221 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
4ee9c684 | 4222 | if (m != MATCH_YES) |
4223 | return m; | |
4224 | ||
b3704193 | 4225 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
4226 | && gfc_current_state () != COMP_DERIVED) | |
4ee9c684 | 4227 | { |
eeebe20b | 4228 | sym = gfc_use_derived (current_ts.u.derived); |
4ee9c684 | 4229 | |
4230 | if (sym == NULL) | |
4231 | { | |
4232 | m = MATCH_ERROR; | |
4233 | goto cleanup; | |
4234 | } | |
4235 | ||
eeebe20b | 4236 | current_ts.u.derived = sym; |
4ee9c684 | 4237 | } |
4238 | ||
4239 | m = match_attr_spec (); | |
4240 | if (m == MATCH_ERROR) | |
4241 | { | |
4242 | m = MATCH_NO; | |
4243 | goto cleanup; | |
4244 | } | |
4245 | ||
b3704193 | 4246 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
4247 | && current_ts.u.derived->components == NULL | |
eeebe20b | 4248 | && !current_ts.u.derived->attr.zero_comp) |
4ee9c684 | 4249 | { |
4250 | ||
4251 | if (current_attr.pointer && gfc_current_state () == COMP_DERIVED) | |
4252 | goto ok; | |
4253 | ||
eeebe20b | 4254 | gfc_find_symbol (current_ts.u.derived->name, |
4255 | current_ts.u.derived->ns->parent, 1, &sym); | |
4ee9c684 | 4256 | |
40cf8078 | 4257 | /* Any symbol that we find had better be a type definition |
1a9745d2 | 4258 | which has its components defined. */ |
40cf8078 | 4259 | if (sym != NULL && sym->attr.flavor == FL_DERIVED |
eeebe20b | 4260 | && (current_ts.u.derived->components != NULL |
4261 | || current_ts.u.derived->attr.zero_comp)) | |
4ee9c684 | 4262 | goto ok; |
4263 | ||
40cf8078 | 4264 | /* Now we have an error, which we signal, and then fix up |
4265 | because the knock-on is plain and simple confusing. */ | |
4266 | gfc_error_now ("Derived type at %C has not been previously defined " | |
1a9745d2 | 4267 | "and so cannot appear in a derived type definition"); |
40cf8078 | 4268 | current_attr.pointer = 1; |
4269 | goto ok; | |
4ee9c684 | 4270 | } |
4271 | ||
4272 | ok: | |
4273 | /* If we have an old-style character declaration, and no new-style | |
4274 | attribute specifications, then there a comma is optional between | |
4275 | the type specification and the variable list. */ | |
4276 | if (m == MATCH_NO && current_ts.type == BT_CHARACTER && old_char_selector) | |
4277 | gfc_match_char (','); | |
4278 | ||
3923b69f | 4279 | /* Give the types/attributes to symbols that follow. Give the element |
4280 | a number so that repeat character length expressions can be copied. */ | |
4281 | elem = 1; | |
4ee9c684 | 4282 | for (;;) |
4283 | { | |
c5d33754 | 4284 | num_idents_on_line++; |
3923b69f | 4285 | m = variable_decl (elem++); |
4ee9c684 | 4286 | if (m == MATCH_ERROR) |
4287 | goto cleanup; | |
4288 | if (m == MATCH_NO) | |
4289 | break; | |
4290 | ||
4291 | if (gfc_match_eos () == MATCH_YES) | |
4292 | goto cleanup; | |
4293 | if (gfc_match_char (',') != MATCH_YES) | |
4294 | break; | |
4295 | } | |
4296 | ||
8f0bdb23 | 4297 | if (gfc_error_flag_test () == 0) |
4298 | gfc_error ("Syntax error in data declaration at %C"); | |
4ee9c684 | 4299 | m = MATCH_ERROR; |
4300 | ||
af29c1f0 | 4301 | gfc_free_data_all (gfc_current_ns); |
4302 | ||
4ee9c684 | 4303 | cleanup: |
4304 | gfc_free_array_spec (current_as); | |
4305 | current_as = NULL; | |
4306 | return m; | |
4307 | } | |
4308 | ||
4309 | ||
4310 | /* Match a prefix associated with a function or subroutine | |
4311 | declaration. If the typespec pointer is nonnull, then a typespec | |
4312 | can be matched. Note that if nothing matches, MATCH_YES is | |
4313 | returned (the null string was matched). */ | |
4314 | ||
077932f9 | 4315 | match |
4316 | gfc_match_prefix (gfc_typespec *ts) | |
4ee9c684 | 4317 | { |
5b11d932 | 4318 | bool seen_type; |
4e4ea00b | 4319 | bool seen_impure; |
4320 | bool found_prefix; | |
4ee9c684 | 4321 | |
4322 | gfc_clear_attr (¤t_attr); | |
4e4ea00b | 4323 | seen_type = false; |
4324 | seen_impure = false; | |
4ee9c684 | 4325 | |
d1645c7b | 4326 | gcc_assert (!gfc_matching_prefix); |
4327 | gfc_matching_prefix = true; | |
40de255b | 4328 | |
4e4ea00b | 4329 | do |
4ee9c684 | 4330 | { |
4e4ea00b | 4331 | found_prefix = false; |
4ee9c684 | 4332 | |
4e4ea00b | 4333 | if (!seen_type && ts != NULL |
4334 | && gfc_match_decl_type_spec (ts, 0) == MATCH_YES | |
4335 | && gfc_match_space () == MATCH_YES) | |
4336 | { | |
4ee9c684 | 4337 | |
4e4ea00b | 4338 | seen_type = true; |
4339 | found_prefix = true; | |
4340 | } | |
4341 | ||
4342 | if (gfc_match ("elemental% ") == MATCH_YES) | |
4343 | { | |
4344 | if (gfc_add_elemental (¤t_attr, NULL) == FAILURE) | |
4345 | goto error; | |
4346 | ||
4347 | found_prefix = true; | |
4348 | } | |
4349 | ||
4350 | if (gfc_match ("pure% ") == MATCH_YES) | |
4351 | { | |
4352 | if (gfc_add_pure (¤t_attr, NULL) == FAILURE) | |
4353 | goto error; | |
4354 | ||
4355 | found_prefix = true; | |
4356 | } | |
4ee9c684 | 4357 | |
4e4ea00b | 4358 | if (gfc_match ("recursive% ") == MATCH_YES) |
4359 | { | |
4360 | if (gfc_add_recursive (¤t_attr, NULL) == FAILURE) | |
4361 | goto error; | |
4362 | ||
4363 | found_prefix = true; | |
4364 | } | |
4365 | ||
4366 | /* IMPURE is a somewhat special case, as it needs not set an actual | |
4367 | attribute but rather only prevents ELEMENTAL routines from being | |
4368 | automatically PURE. */ | |
4369 | if (gfc_match ("impure% ") == MATCH_YES) | |
4370 | { | |
4371 | if (gfc_notify_std (GFC_STD_F2008, | |
4372 | "Fortran 2008: IMPURE procedure at %C") | |
4373 | == FAILURE) | |
4374 | goto error; | |
4375 | ||
4376 | seen_impure = true; | |
4377 | found_prefix = true; | |
4378 | } | |
4ee9c684 | 4379 | } |
4e4ea00b | 4380 | while (found_prefix); |
4ee9c684 | 4381 | |
4e4ea00b | 4382 | /* IMPURE and PURE must not both appear, of course. */ |
4383 | if (seen_impure && current_attr.pure) | |
4ee9c684 | 4384 | { |
4e4ea00b | 4385 | gfc_error ("PURE and IMPURE must not appear both at %C"); |
4386 | goto error; | |
4ee9c684 | 4387 | } |
4388 | ||
4e4ea00b | 4389 | /* If IMPURE it not seen but the procedure is ELEMENTAL, mark it as PURE. */ |
4390 | if (!seen_impure && current_attr.elemental && !current_attr.pure) | |
4ee9c684 | 4391 | { |
4e4ea00b | 4392 | if (gfc_add_pure (¤t_attr, NULL) == FAILURE) |
40de255b | 4393 | goto error; |
4ee9c684 | 4394 | } |
4395 | ||
4396 | /* At this point, the next item is not a prefix. */ | |
d1645c7b | 4397 | gcc_assert (gfc_matching_prefix); |
4398 | gfc_matching_prefix = false; | |
4ee9c684 | 4399 | return MATCH_YES; |
40de255b | 4400 | |
4401 | error: | |
d1645c7b | 4402 | gcc_assert (gfc_matching_prefix); |
4403 | gfc_matching_prefix = false; | |
40de255b | 4404 | return MATCH_ERROR; |
4ee9c684 | 4405 | } |
4406 | ||
4407 | ||
077932f9 | 4408 | /* Copy attributes matched by gfc_match_prefix() to attributes on a symbol. */ |
4ee9c684 | 4409 | |
f6bb8f4b | 4410 | static gfc_try |
1a9745d2 | 4411 | copy_prefix (symbol_attribute *dest, locus *where) |
4ee9c684 | 4412 | { |
4ee9c684 | 4413 | if (current_attr.pure && gfc_add_pure (dest, where) == FAILURE) |
4414 | return FAILURE; | |
4415 | ||
4416 | if (current_attr.elemental && gfc_add_elemental (dest, where) == FAILURE) | |
4417 | return FAILURE; | |
4418 | ||
4419 | if (current_attr.recursive && gfc_add_recursive (dest, where) == FAILURE) | |
4420 | return FAILURE; | |
4421 | ||
4422 | return SUCCESS; | |
4423 | } | |
4424 | ||
4425 | ||
4426 | /* Match a formal argument list. */ | |
4427 | ||
4428 | match | |
1a9745d2 | 4429 | gfc_match_formal_arglist (gfc_symbol *progname, int st_flag, int null_flag) |
4ee9c684 | 4430 | { |
4431 | gfc_formal_arglist *head, *tail, *p, *q; | |
4432 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4433 | gfc_symbol *sym; | |
4434 | match m; | |
4435 | ||
4436 | head = tail = NULL; | |
4437 | ||
4438 | if (gfc_match_char ('(') != MATCH_YES) | |
4439 | { | |
4440 | if (null_flag) | |
4441 | goto ok; | |
4442 | return MATCH_NO; | |
4443 | } | |
4444 | ||
4445 | if (gfc_match_char (')') == MATCH_YES) | |
4446 | goto ok; | |
4447 | ||
4448 | for (;;) | |
4449 | { | |
4450 | if (gfc_match_char ('*') == MATCH_YES) | |
4451 | sym = NULL; | |
4452 | else | |
4453 | { | |
4454 | m = gfc_match_name (name); | |
4455 | if (m != MATCH_YES) | |
4456 | goto cleanup; | |
4457 | ||
4458 | if (gfc_get_symbol (name, NULL, &sym)) | |
4459 | goto cleanup; | |
4460 | } | |
4461 | ||
4462 | p = gfc_get_formal_arglist (); | |
4463 | ||
4464 | if (head == NULL) | |
4465 | head = tail = p; | |
4466 | else | |
4467 | { | |
4468 | tail->next = p; | |
4469 | tail = p; | |
4470 | } | |
4471 | ||
4472 | tail->sym = sym; | |
4473 | ||
4474 | /* We don't add the VARIABLE flavor because the name could be a | |
1a9745d2 | 4475 | dummy procedure. We don't apply these attributes to formal |
4476 | arguments of statement functions. */ | |
4ee9c684 | 4477 | if (sym != NULL && !st_flag |
950683ed | 4478 | && (gfc_add_dummy (&sym->attr, sym->name, NULL) == FAILURE |
4ee9c684 | 4479 | || gfc_missing_attr (&sym->attr, NULL) == FAILURE)) |
4480 | { | |
4481 | m = MATCH_ERROR; | |
4482 | goto cleanup; | |
4483 | } | |
4484 | ||
4485 | /* The name of a program unit can be in a different namespace, | |
1a9745d2 | 4486 | so check for it explicitly. After the statement is accepted, |
4487 | the name is checked for especially in gfc_get_symbol(). */ | |
4ee9c684 | 4488 | if (gfc_new_block != NULL && sym != NULL |
4489 | && strcmp (sym->name, gfc_new_block->name) == 0) | |
4490 | { | |
4491 | gfc_error ("Name '%s' at %C is the name of the procedure", | |
4492 | sym->name); | |
4493 | m = MATCH_ERROR; | |
4494 | goto cleanup; | |
4495 | } | |
4496 | ||
4497 | if (gfc_match_char (')') == MATCH_YES) | |
4498 | goto ok; | |
4499 | ||
4500 | m = gfc_match_char (','); | |
4501 | if (m != MATCH_YES) | |
4502 | { | |
4503 | gfc_error ("Unexpected junk in formal argument list at %C"); | |
4504 | goto cleanup; | |
4505 | } | |
4506 | } | |
4507 | ||
4508 | ok: | |
4509 | /* Check for duplicate symbols in the formal argument list. */ | |
4510 | if (head != NULL) | |
4511 | { | |
4512 | for (p = head; p->next; p = p->next) | |
4513 | { | |
4514 | if (p->sym == NULL) | |
4515 | continue; | |
4516 | ||
4517 | for (q = p->next; q; q = q->next) | |
4518 | if (p->sym == q->sym) | |
4519 | { | |
1a9745d2 | 4520 | gfc_error ("Duplicate symbol '%s' in formal argument list " |
4521 | "at %C", p->sym->name); | |
4ee9c684 | 4522 | |
4523 | m = MATCH_ERROR; | |
4524 | goto cleanup; | |
4525 | } | |
4526 | } | |
4527 | } | |
4528 | ||
f6d0e37a | 4529 | if (gfc_add_explicit_interface (progname, IFSRC_DECL, head, NULL) |
4530 | == FAILURE) | |
4ee9c684 | 4531 | { |
4532 | m = MATCH_ERROR; | |
4533 | goto cleanup; | |
4534 | } | |
4535 | ||
4536 | return MATCH_YES; | |
4537 | ||
4538 | cleanup: | |
4539 | gfc_free_formal_arglist (head); | |
4540 | return m; | |
4541 | } | |
4542 | ||
4543 | ||
4544 | /* Match a RESULT specification following a function declaration or | |
4545 | ENTRY statement. Also matches the end-of-statement. */ | |
4546 | ||
4547 | static match | |
f6d0e37a | 4548 | match_result (gfc_symbol *function, gfc_symbol **result) |
4ee9c684 | 4549 | { |
4550 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4551 | gfc_symbol *r; | |
4552 | match m; | |
4553 | ||
4554 | if (gfc_match (" result (") != MATCH_YES) | |
4555 | return MATCH_NO; | |
4556 | ||
4557 | m = gfc_match_name (name); | |
4558 | if (m != MATCH_YES) | |
4559 | return m; | |
4560 | ||
c5d33754 | 4561 | /* Get the right paren, and that's it because there could be the |
4562 | bind(c) attribute after the result clause. */ | |
4563 | if (gfc_match_char(')') != MATCH_YES) | |
4ee9c684 | 4564 | { |
c5d33754 | 4565 | /* TODO: should report the missing right paren here. */ |
4ee9c684 | 4566 | return MATCH_ERROR; |
4567 | } | |
4568 | ||
4569 | if (strcmp (function->name, name) == 0) | |
4570 | { | |
1a9745d2 | 4571 | gfc_error ("RESULT variable at %C must be different than function name"); |
4ee9c684 | 4572 | return MATCH_ERROR; |
4573 | } | |
4574 | ||
4575 | if (gfc_get_symbol (name, NULL, &r)) | |
4576 | return MATCH_ERROR; | |
4577 | ||
f6d3042b | 4578 | if (gfc_add_result (&r->attr, r->name, NULL) == FAILURE) |
4ee9c684 | 4579 | return MATCH_ERROR; |
4580 | ||
4581 | *result = r; | |
4582 | ||
4583 | return MATCH_YES; | |
4584 | } | |
4585 | ||
4586 | ||
c5d33754 | 4587 | /* Match a function suffix, which could be a combination of a result |
4588 | clause and BIND(C), either one, or neither. The draft does not | |
4589 | require them to come in a specific order. */ | |
4590 | ||
4591 | match | |
4592 | gfc_match_suffix (gfc_symbol *sym, gfc_symbol **result) | |
4593 | { | |
4594 | match is_bind_c; /* Found bind(c). */ | |
4595 | match is_result; /* Found result clause. */ | |
4596 | match found_match; /* Status of whether we've found a good match. */ | |
e0be6f02 | 4597 | char peek_char; /* Character we're going to peek at. */ |
75ae7f6c | 4598 | bool allow_binding_name; |
c5d33754 | 4599 | |
4600 | /* Initialize to having found nothing. */ | |
4601 | found_match = MATCH_NO; | |
4602 | is_bind_c = MATCH_NO; | |
4603 | is_result = MATCH_NO; | |
4604 | ||
4605 | /* Get the next char to narrow between result and bind(c). */ | |
4606 | gfc_gobble_whitespace (); | |
e0be6f02 | 4607 | peek_char = gfc_peek_ascii_char (); |
c5d33754 | 4608 | |
75ae7f6c | 4609 | /* C binding names are not allowed for internal procedures. */ |
4610 | if (gfc_current_state () == COMP_CONTAINS | |
4611 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
4612 | allow_binding_name = false; | |
4613 | else | |
4614 | allow_binding_name = true; | |
4615 | ||
c5d33754 | 4616 | switch (peek_char) |
4617 | { | |
4618 | case 'r': | |
4619 | /* Look for result clause. */ | |
4620 | is_result = match_result (sym, result); | |
4621 | if (is_result == MATCH_YES) | |
4622 | { | |
4623 | /* Now see if there is a bind(c) after it. */ | |
75ae7f6c | 4624 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
c5d33754 | 4625 | /* We've found the result clause and possibly bind(c). */ |
4626 | found_match = MATCH_YES; | |
4627 | } | |
4628 | else | |
4629 | /* This should only be MATCH_ERROR. */ | |
4630 | found_match = is_result; | |
4631 | break; | |
4632 | case 'b': | |
4633 | /* Look for bind(c) first. */ | |
75ae7f6c | 4634 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
c5d33754 | 4635 | if (is_bind_c == MATCH_YES) |
4636 | { | |
4637 | /* Now see if a result clause followed it. */ | |
4638 | is_result = match_result (sym, result); | |
4639 | found_match = MATCH_YES; | |
4640 | } | |
4641 | else | |
4642 | { | |
4643 | /* Should only be a MATCH_ERROR if we get here after seeing 'b'. */ | |
4644 | found_match = MATCH_ERROR; | |
4645 | } | |
4646 | break; | |
4647 | default: | |
4648 | gfc_error ("Unexpected junk after function declaration at %C"); | |
4649 | found_match = MATCH_ERROR; | |
4650 | break; | |
4651 | } | |
4652 | ||
c5d33754 | 4653 | if (is_bind_c == MATCH_YES) |
4518e961 | 4654 | { |
75ae7f6c | 4655 | /* Fortran 2008 draft allows BIND(C) for internal procedures. */ |
4518e961 | 4656 | if (gfc_current_state () == COMP_CONTAINS |
75ae7f6c | 4657 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
2dcae6c7 | 4658 | && gfc_notify_std (GFC_STD_F2008, "Fortran 2008: BIND(C) attribute " |
4659 | "at %L may not be specified for an internal " | |
4660 | "procedure", &gfc_current_locus) | |
75ae7f6c | 4661 | == FAILURE) |
4662 | return MATCH_ERROR; | |
4663 | ||
4518e961 | 4664 | if (gfc_add_is_bind_c (&(sym->attr), sym->name, &gfc_current_locus, 1) |
4665 | == FAILURE) | |
4666 | return MATCH_ERROR; | |
4667 | } | |
c5d33754 | 4668 | |
4669 | return found_match; | |
4670 | } | |
4671 | ||
4672 | ||
1e057e9b | 4673 | /* Procedure pointer return value without RESULT statement: |
4674 | Add "hidden" result variable named "ppr@". */ | |
4675 | ||
4676 | static gfc_try | |
4677 | add_hidden_procptr_result (gfc_symbol *sym) | |
4678 | { | |
4679 | bool case1,case2; | |
4680 | ||
4681 | if (gfc_notification_std (GFC_STD_F2003) == ERROR) | |
4682 | return FAILURE; | |
4683 | ||
4684 | /* First usage case: PROCEDURE and EXTERNAL statements. */ | |
4685 | case1 = gfc_current_state () == COMP_FUNCTION && gfc_current_block () | |
4686 | && strcmp (gfc_current_block ()->name, sym->name) == 0 | |
4687 | && sym->attr.external; | |
4688 | /* Second usage case: INTERFACE statements. */ | |
4689 | case2 = gfc_current_state () == COMP_INTERFACE && gfc_state_stack->previous | |
4690 | && gfc_state_stack->previous->state == COMP_FUNCTION | |
4691 | && strcmp (gfc_state_stack->previous->sym->name, sym->name) == 0; | |
4692 | ||
4693 | if (case1 || case2) | |
4694 | { | |
4695 | gfc_symtree *stree; | |
4696 | if (case1) | |
36b0a1b0 | 4697 | gfc_get_sym_tree ("ppr@", gfc_current_ns, &stree, false); |
1e057e9b | 4698 | else if (case2) |
180a5dc0 | 4699 | { |
4700 | gfc_symtree *st2; | |
36b0a1b0 | 4701 | gfc_get_sym_tree ("ppr@", gfc_current_ns->parent, &stree, false); |
180a5dc0 | 4702 | st2 = gfc_new_symtree (&gfc_current_ns->sym_root, "ppr@"); |
4703 | st2->n.sym = stree->n.sym; | |
4704 | } | |
1e057e9b | 4705 | sym->result = stree->n.sym; |
4706 | ||
4707 | sym->result->attr.proc_pointer = sym->attr.proc_pointer; | |
4708 | sym->result->attr.pointer = sym->attr.pointer; | |
4709 | sym->result->attr.external = sym->attr.external; | |
4710 | sym->result->attr.referenced = sym->attr.referenced; | |
e40ac2fe | 4711 | sym->result->ts = sym->ts; |
1e057e9b | 4712 | sym->attr.proc_pointer = 0; |
4713 | sym->attr.pointer = 0; | |
4714 | sym->attr.external = 0; | |
4715 | if (sym->result->attr.external && sym->result->attr.pointer) | |
4716 | { | |
4717 | sym->result->attr.pointer = 0; | |
4718 | sym->result->attr.proc_pointer = 1; | |
4719 | } | |
4720 | ||
4721 | return gfc_add_result (&sym->result->attr, sym->result->name, NULL); | |
4722 | } | |
4723 | /* POINTER after PROCEDURE/EXTERNAL/INTERFACE statement. */ | |
4724 | else if (sym->attr.function && !sym->attr.external && sym->attr.pointer | |
4725 | && sym->result && sym->result != sym && sym->result->attr.external | |
4726 | && sym == gfc_current_ns->proc_name | |
4727 | && sym == sym->result->ns->proc_name | |
4728 | && strcmp ("ppr@", sym->result->name) == 0) | |
4729 | { | |
4730 | sym->result->attr.proc_pointer = 1; | |
4731 | sym->attr.pointer = 0; | |
4732 | return SUCCESS; | |
4733 | } | |
4734 | else | |
4735 | return FAILURE; | |
4736 | } | |
4737 | ||
4738 | ||
64e93293 | 4739 | /* Match the interface for a PROCEDURE declaration, |
4740 | including brackets (R1212). */ | |
af1a34ee | 4741 | |
4742 | static match | |
64e93293 | 4743 | match_procedure_interface (gfc_symbol **proc_if) |
af1a34ee | 4744 | { |
4745 | match m; | |
1eb2b542 | 4746 | gfc_symtree *st; |
af1a34ee | 4747 | locus old_loc, entry_loc; |
1eb2b542 | 4748 | gfc_namespace *old_ns = gfc_current_ns; |
4749 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
af1a34ee | 4750 | |
1eb2b542 | 4751 | old_loc = entry_loc = gfc_current_locus; |
af1a34ee | 4752 | gfc_clear_ts (¤t_ts); |
4753 | ||
4754 | if (gfc_match (" (") != MATCH_YES) | |
4755 | { | |
4756 | gfc_current_locus = entry_loc; | |
4757 | return MATCH_NO; | |
4758 | } | |
4759 | ||
4760 | /* Get the type spec. for the procedure interface. */ | |
4761 | old_loc = gfc_current_locus; | |
e8152f13 | 4762 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
fd1277c3 | 4763 | gfc_gobble_whitespace (); |
e0be6f02 | 4764 | if (m == MATCH_YES || (m == MATCH_NO && gfc_peek_ascii_char () == ')')) |
af1a34ee | 4765 | goto got_ts; |
4766 | ||
4767 | if (m == MATCH_ERROR) | |
4768 | return m; | |
4769 | ||
1eb2b542 | 4770 | /* Procedure interface is itself a procedure. */ |
af1a34ee | 4771 | gfc_current_locus = old_loc; |
1eb2b542 | 4772 | m = gfc_match_name (name); |
af1a34ee | 4773 | |
1eb2b542 | 4774 | /* First look to see if it is already accessible in the current |
4775 | namespace because it is use associated or contained. */ | |
4776 | st = NULL; | |
4777 | if (gfc_find_sym_tree (name, NULL, 0, &st)) | |
4778 | return MATCH_ERROR; | |
4779 | ||
4780 | /* If it is still not found, then try the parent namespace, if it | |
4781 | exists and create the symbol there if it is still not found. */ | |
4782 | if (gfc_current_ns->parent) | |
4783 | gfc_current_ns = gfc_current_ns->parent; | |
4784 | if (st == NULL && gfc_get_ha_sym_tree (name, &st)) | |
4785 | return MATCH_ERROR; | |
4786 | ||
4787 | gfc_current_ns = old_ns; | |
4788 | *proc_if = st->n.sym; | |
af1a34ee | 4789 | |
4790 | /* Various interface checks. */ | |
64e93293 | 4791 | if (*proc_if) |
af1a34ee | 4792 | { |
64e93293 | 4793 | (*proc_if)->refs++; |
74113644 | 4794 | /* Resolve interface if possible. That way, attr.procedure is only set |
4795 | if it is declared by a later procedure-declaration-stmt, which is | |
4796 | invalid per C1212. */ | |
64e93293 | 4797 | while ((*proc_if)->ts.interface) |
4798 | *proc_if = (*proc_if)->ts.interface; | |
74113644 | 4799 | |
64e93293 | 4800 | if ((*proc_if)->generic) |
af1a34ee | 4801 | { |
64e93293 | 4802 | gfc_error ("Interface '%s' at %C may not be generic", |
4803 | (*proc_if)->name); | |
af1a34ee | 4804 | return MATCH_ERROR; |
4805 | } | |
64e93293 | 4806 | if ((*proc_if)->attr.proc == PROC_ST_FUNCTION) |
af1a34ee | 4807 | { |
4808 | gfc_error ("Interface '%s' at %C may not be a statement function", | |
64e93293 | 4809 | (*proc_if)->name); |
af1a34ee | 4810 | return MATCH_ERROR; |
4811 | } | |
4812 | /* Handle intrinsic procedures. */ | |
64e93293 | 4813 | if (!((*proc_if)->attr.external || (*proc_if)->attr.use_assoc |
4814 | || (*proc_if)->attr.if_source == IFSRC_IFBODY) | |
4815 | && (gfc_is_intrinsic ((*proc_if), 0, gfc_current_locus) | |
4816 | || gfc_is_intrinsic ((*proc_if), 1, gfc_current_locus))) | |
4817 | (*proc_if)->attr.intrinsic = 1; | |
4818 | if ((*proc_if)->attr.intrinsic | |
4819 | && !gfc_intrinsic_actual_ok ((*proc_if)->name, 0)) | |
af1a34ee | 4820 | { |
4821 | gfc_error ("Intrinsic procedure '%s' not allowed " | |
64e93293 | 4822 | "in PROCEDURE statement at %C", (*proc_if)->name); |
af1a34ee | 4823 | return MATCH_ERROR; |
4824 | } | |
af1a34ee | 4825 | } |
4826 | ||
4827 | got_ts: | |
af1a34ee | 4828 | if (gfc_match (" )") != MATCH_YES) |
4829 | { | |
4830 | gfc_current_locus = entry_loc; | |
4831 | return MATCH_NO; | |
4832 | } | |
4833 | ||
64e93293 | 4834 | return MATCH_YES; |
4835 | } | |
4836 | ||
4837 | ||
4838 | /* Match a PROCEDURE declaration (R1211). */ | |
4839 | ||
4840 | static match | |
4841 | match_procedure_decl (void) | |
4842 | { | |
4843 | match m; | |
4844 | gfc_symbol *sym, *proc_if = NULL; | |
4845 | int num; | |
4846 | gfc_expr *initializer = NULL; | |
4847 | ||
4848 | /* Parse interface (with brackets). */ | |
4849 | m = match_procedure_interface (&proc_if); | |
4850 | if (m != MATCH_YES) | |
4851 | return m; | |
4852 | ||
4853 | /* Parse attributes (with colons). */ | |
af1a34ee | 4854 | m = match_attr_spec(); |
4855 | if (m == MATCH_ERROR) | |
4856 | return MATCH_ERROR; | |
4857 | ||
caa3ea40 | 4858 | if (proc_if && proc_if->attr.is_bind_c && !current_attr.is_bind_c) |
4859 | { | |
4860 | current_attr.is_bind_c = 1; | |
4861 | has_name_equals = 0; | |
4862 | curr_binding_label = NULL; | |
4863 | } | |
4864 | ||
af1a34ee | 4865 | /* Get procedure symbols. */ |
4866 | for(num=1;;num++) | |
4867 | { | |
af1a34ee | 4868 | m = gfc_match_symbol (&sym, 0); |
4869 | if (m == MATCH_NO) | |
4870 | goto syntax; | |
4871 | else if (m == MATCH_ERROR) | |
4872 | return m; | |
4873 | ||
4874 | /* Add current_attr to the symbol attributes. */ | |
4875 | if (gfc_copy_attr (&sym->attr, ¤t_attr, NULL) == FAILURE) | |
4876 | return MATCH_ERROR; | |
4877 | ||
4878 | if (sym->attr.is_bind_c) | |
4879 | { | |
4880 | /* Check for C1218. */ | |
4881 | if (!proc_if || !proc_if->attr.is_bind_c) | |
4882 | { | |
4883 | gfc_error ("BIND(C) attribute at %C requires " | |
4884 | "an interface with BIND(C)"); | |
4885 | return MATCH_ERROR; | |
4886 | } | |
4887 | /* Check for C1217. */ | |
4888 | if (has_name_equals && sym->attr.pointer) | |
4889 | { | |
4890 | gfc_error ("BIND(C) procedure with NAME may not have " | |
4891 | "POINTER attribute at %C"); | |
4892 | return MATCH_ERROR; | |
4893 | } | |
4894 | if (has_name_equals && sym->attr.dummy) | |
4895 | { | |
4896 | gfc_error ("Dummy procedure at %C may not have " | |
4897 | "BIND(C) attribute with NAME"); | |
4898 | return MATCH_ERROR; | |
4899 | } | |
4900 | /* Set binding label for BIND(C). */ | |
7b2060ba | 4901 | if (set_binding_label (&sym->binding_label, sym->name, num) |
4902 | != SUCCESS) | |
af1a34ee | 4903 | return MATCH_ERROR; |
4904 | } | |
4905 | ||
cad0ddcf | 4906 | if (gfc_add_external (&sym->attr, NULL) == FAILURE) |
af1a34ee | 4907 | return MATCH_ERROR; |
1e057e9b | 4908 | |
4909 | if (add_hidden_procptr_result (sym) == SUCCESS) | |
4910 | sym = sym->result; | |
4911 | ||
af1a34ee | 4912 | if (gfc_add_proc (&sym->attr, sym->name, NULL) == FAILURE) |
4913 | return MATCH_ERROR; | |
4914 | ||
4915 | /* Set interface. */ | |
4916 | if (proc_if != NULL) | |
f7d7a083 | 4917 | { |
13a834aa | 4918 | if (sym->ts.type != BT_UNKNOWN) |
4919 | { | |
4920 | gfc_error ("Procedure '%s' at %L already has basic type of %s", | |
4921 | sym->name, &gfc_current_locus, | |
4922 | gfc_basic_typename (sym->ts.type)); | |
4923 | return MATCH_ERROR; | |
4924 | } | |
2cd2bb5c | 4925 | sym->ts.interface = proc_if; |
f7d7a083 | 4926 | sym->attr.untyped = 1; |
180a5dc0 | 4927 | sym->attr.if_source = IFSRC_IFBODY; |
f7d7a083 | 4928 | } |
af1a34ee | 4929 | else if (current_ts.type != BT_UNKNOWN) |
4930 | { | |
13a834aa | 4931 | if (gfc_add_type (sym, ¤t_ts, &gfc_current_locus) == FAILURE) |
4932 | return MATCH_ERROR; | |
2cd2bb5c | 4933 | sym->ts.interface = gfc_new_symbol ("", gfc_current_ns); |
4934 | sym->ts.interface->ts = current_ts; | |
ce80bc5b | 4935 | sym->ts.interface->attr.flavor = FL_PROCEDURE; |
2cd2bb5c | 4936 | sym->ts.interface->attr.function = 1; |
ce80bc5b | 4937 | sym->attr.function = 1; |
180a5dc0 | 4938 | sym->attr.if_source = IFSRC_UNKNOWN; |
af1a34ee | 4939 | } |
4940 | ||
cad0ddcf | 4941 | if (gfc_match (" =>") == MATCH_YES) |
4942 | { | |
4943 | if (!current_attr.pointer) | |
4944 | { | |
4945 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
4946 | m = MATCH_ERROR; | |
4947 | goto cleanup; | |
4948 | } | |
4949 | ||
23d075f4 | 4950 | m = match_pointer_init (&initializer, 1); |
cad0ddcf | 4951 | if (m != MATCH_YES) |
4952 | goto cleanup; | |
4953 | ||
4954 | if (add_init_expr_to_sym (sym->name, &initializer, &gfc_current_locus) | |
4955 | != SUCCESS) | |
4956 | goto cleanup; | |
4957 | ||
4958 | } | |
4959 | ||
4960 | gfc_set_sym_referenced (sym); | |
4961 | ||
af1a34ee | 4962 | if (gfc_match_eos () == MATCH_YES) |
4963 | return MATCH_YES; | |
4964 | if (gfc_match_char (',') != MATCH_YES) | |
4965 | goto syntax; | |
4966 | } | |
4967 | ||
4968 | syntax: | |
4969 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
4970 | return MATCH_ERROR; | |
cad0ddcf | 4971 | |
4972 | cleanup: | |
4973 | /* Free stuff up and return. */ | |
4974 | gfc_free_expr (initializer); | |
4975 | return m; | |
af1a34ee | 4976 | } |
4977 | ||
4978 | ||
64e93293 | 4979 | static match |
4980 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc); | |
4981 | ||
4982 | ||
4983 | /* Match a procedure pointer component declaration (R445). */ | |
4984 | ||
4985 | static match | |
4986 | match_ppc_decl (void) | |
4987 | { | |
4988 | match m; | |
4989 | gfc_symbol *proc_if = NULL; | |
4990 | gfc_typespec ts; | |
4991 | int num; | |
4992 | gfc_component *c; | |
4993 | gfc_expr *initializer = NULL; | |
4994 | gfc_typebound_proc* tb; | |
4995 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4996 | ||
4997 | /* Parse interface (with brackets). */ | |
4998 | m = match_procedure_interface (&proc_if); | |
4999 | if (m != MATCH_YES) | |
5000 | goto syntax; | |
5001 | ||
5002 | /* Parse attributes. */ | |
5003 | tb = XCNEW (gfc_typebound_proc); | |
5004 | tb->where = gfc_current_locus; | |
5005 | m = match_binding_attributes (tb, false, true); | |
5006 | if (m == MATCH_ERROR) | |
5007 | return m; | |
5008 | ||
64e93293 | 5009 | gfc_clear_attr (¤t_attr); |
5010 | current_attr.procedure = 1; | |
5011 | current_attr.proc_pointer = 1; | |
5012 | current_attr.access = tb->access; | |
5013 | current_attr.flavor = FL_PROCEDURE; | |
5014 | ||
5015 | /* Match the colons (required). */ | |
5016 | if (gfc_match (" ::") != MATCH_YES) | |
5017 | { | |
5018 | gfc_error ("Expected '::' after binding-attributes at %C"); | |
5019 | return MATCH_ERROR; | |
5020 | } | |
5021 | ||
5022 | /* Check for C450. */ | |
5023 | if (!tb->nopass && proc_if == NULL) | |
5024 | { | |
5025 | gfc_error("NOPASS or explicit interface required at %C"); | |
5026 | return MATCH_ERROR; | |
5027 | } | |
5028 | ||
8a026279 | 5029 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: Procedure pointer " |
5030 | "component at %C") == FAILURE) | |
5031 | return MATCH_ERROR; | |
5032 | ||
64e93293 | 5033 | /* Match PPC names. */ |
5034 | ts = current_ts; | |
5035 | for(num=1;;num++) | |
5036 | { | |
5037 | m = gfc_match_name (name); | |
5038 | if (m == MATCH_NO) | |
5039 | goto syntax; | |
5040 | else if (m == MATCH_ERROR) | |
5041 | return m; | |
5042 | ||
5043 | if (gfc_add_component (gfc_current_block (), name, &c) == FAILURE) | |
5044 | return MATCH_ERROR; | |
5045 | ||
5046 | /* Add current_attr to the symbol attributes. */ | |
5047 | if (gfc_copy_attr (&c->attr, ¤t_attr, NULL) == FAILURE) | |
5048 | return MATCH_ERROR; | |
5049 | ||
5050 | if (gfc_add_external (&c->attr, NULL) == FAILURE) | |
5051 | return MATCH_ERROR; | |
5052 | ||
5053 | if (gfc_add_proc (&c->attr, name, NULL) == FAILURE) | |
5054 | return MATCH_ERROR; | |
5055 | ||
fe9b08a2 | 5056 | c->tb = tb; |
5057 | ||
64e93293 | 5058 | /* Set interface. */ |
5059 | if (proc_if != NULL) | |
5060 | { | |
5061 | c->ts.interface = proc_if; | |
5062 | c->attr.untyped = 1; | |
5063 | c->attr.if_source = IFSRC_IFBODY; | |
5064 | } | |
5065 | else if (ts.type != BT_UNKNOWN) | |
5066 | { | |
5067 | c->ts = ts; | |
5068 | c->ts.interface = gfc_new_symbol ("", gfc_current_ns); | |
5069 | c->ts.interface->ts = ts; | |
ce80bc5b | 5070 | c->ts.interface->attr.flavor = FL_PROCEDURE; |
64e93293 | 5071 | c->ts.interface->attr.function = 1; |
ce80bc5b | 5072 | c->attr.function = 1; |
64e93293 | 5073 | c->attr.if_source = IFSRC_UNKNOWN; |
5074 | } | |
5075 | ||
5076 | if (gfc_match (" =>") == MATCH_YES) | |
5077 | { | |
23d075f4 | 5078 | m = match_pointer_init (&initializer, 1); |
64e93293 | 5079 | if (m != MATCH_YES) |
5080 | { | |
5081 | gfc_free_expr (initializer); | |
5082 | return m; | |
5083 | } | |
5084 | c->initializer = initializer; | |
5085 | } | |
5086 | ||
5087 | if (gfc_match_eos () == MATCH_YES) | |
5088 | return MATCH_YES; | |
5089 | if (gfc_match_char (',') != MATCH_YES) | |
5090 | goto syntax; | |
5091 | } | |
5092 | ||
5093 | syntax: | |
5094 | gfc_error ("Syntax error in procedure pointer component at %C"); | |
5095 | return MATCH_ERROR; | |
5096 | } | |
5097 | ||
5098 | ||
af1a34ee | 5099 | /* Match a PROCEDURE declaration inside an interface (R1206). */ |
5100 | ||
5101 | static match | |
5102 | match_procedure_in_interface (void) | |
5103 | { | |
5104 | match m; | |
5105 | gfc_symbol *sym; | |
5106 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5107 | ||
5108 | if (current_interface.type == INTERFACE_NAMELESS | |
5109 | || current_interface.type == INTERFACE_ABSTRACT) | |
5110 | { | |
5111 | gfc_error ("PROCEDURE at %C must be in a generic interface"); | |
5112 | return MATCH_ERROR; | |
5113 | } | |
5114 | ||
5115 | for(;;) | |
5116 | { | |
5117 | m = gfc_match_name (name); | |
5118 | if (m == MATCH_NO) | |
5119 | goto syntax; | |
5120 | else if (m == MATCH_ERROR) | |
5121 | return m; | |
5122 | if (gfc_get_symbol (name, gfc_current_ns->parent, &sym)) | |
5123 | return MATCH_ERROR; | |
5124 | ||
5125 | if (gfc_add_interface (sym) == FAILURE) | |
5126 | return MATCH_ERROR; | |
5127 | ||
af1a34ee | 5128 | if (gfc_match_eos () == MATCH_YES) |
5129 | break; | |
5130 | if (gfc_match_char (',') != MATCH_YES) | |
5131 | goto syntax; | |
5132 | } | |
5133 | ||
5134 | return MATCH_YES; | |
5135 | ||
5136 | syntax: | |
5137 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
5138 | return MATCH_ERROR; | |
5139 | } | |
5140 | ||
5141 | ||
5142 | /* General matcher for PROCEDURE declarations. */ | |
5143 | ||
7fd88f6e | 5144 | static match match_procedure_in_type (void); |
5145 | ||
af1a34ee | 5146 | match |
5147 | gfc_match_procedure (void) | |
5148 | { | |
5149 | match m; | |
5150 | ||
5151 | switch (gfc_current_state ()) | |
5152 | { | |
5153 | case COMP_NONE: | |
5154 | case COMP_PROGRAM: | |
5155 | case COMP_MODULE: | |
5156 | case COMP_SUBROUTINE: | |
5157 | case COMP_FUNCTION: | |
0b342e60 | 5158 | case COMP_BLOCK: |
af1a34ee | 5159 | m = match_procedure_decl (); |
5160 | break; | |
5161 | case COMP_INTERFACE: | |
5162 | m = match_procedure_in_interface (); | |
5163 | break; | |
5164 | case COMP_DERIVED: | |
64e93293 | 5165 | m = match_ppc_decl (); |
5166 | break; | |
7fd88f6e | 5167 | case COMP_DERIVED_CONTAINS: |
5168 | m = match_procedure_in_type (); | |
5169 | break; | |
af1a34ee | 5170 | default: |
5171 | return MATCH_NO; | |
5172 | } | |
5173 | ||
5174 | if (m != MATCH_YES) | |
5175 | return m; | |
5176 | ||
5177 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: PROCEDURE statement at %C") | |
5178 | == FAILURE) | |
5179 | return MATCH_ERROR; | |
5180 | ||
5181 | return m; | |
5182 | } | |
5183 | ||
5184 | ||
a34926ba | 5185 | /* Warn if a matched procedure has the same name as an intrinsic; this is |
5186 | simply a wrapper around gfc_warn_intrinsic_shadow that interprets the current | |
5187 | parser-state-stack to find out whether we're in a module. */ | |
5188 | ||
5189 | static void | |
5190 | warn_intrinsic_shadow (const gfc_symbol* sym, bool func) | |
5191 | { | |
5192 | bool in_module; | |
5193 | ||
5194 | in_module = (gfc_state_stack->previous | |
5195 | && gfc_state_stack->previous->state == COMP_MODULE); | |
5196 | ||
5197 | gfc_warn_intrinsic_shadow (sym, in_module, func); | |
5198 | } | |
5199 | ||
5200 | ||
4ee9c684 | 5201 | /* Match a function declaration. */ |
5202 | ||
5203 | match | |
5204 | gfc_match_function_decl (void) | |
5205 | { | |
5206 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5207 | gfc_symbol *sym, *result; | |
5208 | locus old_loc; | |
5209 | match m; | |
c5d33754 | 5210 | match suffix_match; |
5211 | match found_match; /* Status returned by match func. */ | |
4ee9c684 | 5212 | |
5213 | if (gfc_current_state () != COMP_NONE | |
5214 | && gfc_current_state () != COMP_INTERFACE | |
5215 | && gfc_current_state () != COMP_CONTAINS) | |
5216 | return MATCH_NO; | |
5217 | ||
5218 | gfc_clear_ts (¤t_ts); | |
5219 | ||
cbb9e6aa | 5220 | old_loc = gfc_current_locus; |
4ee9c684 | 5221 | |
077932f9 | 5222 | m = gfc_match_prefix (¤t_ts); |
4ee9c684 | 5223 | if (m != MATCH_YES) |
5224 | { | |
cbb9e6aa | 5225 | gfc_current_locus = old_loc; |
4ee9c684 | 5226 | return m; |
5227 | } | |
5228 | ||
5229 | if (gfc_match ("function% %n", name) != MATCH_YES) | |
5230 | { | |
cbb9e6aa | 5231 | gfc_current_locus = old_loc; |
4ee9c684 | 5232 | return MATCH_NO; |
5233 | } | |
d77f260f | 5234 | if (get_proc_name (name, &sym, false)) |
4ee9c684 | 5235 | return MATCH_ERROR; |
1e057e9b | 5236 | |
5237 | if (add_hidden_procptr_result (sym) == SUCCESS) | |
5238 | sym = sym->result; | |
5239 | ||
4ee9c684 | 5240 | gfc_new_block = sym; |
5241 | ||
5242 | m = gfc_match_formal_arglist (sym, 0, 0); | |
5243 | if (m == MATCH_NO) | |
9b435b6d | 5244 | { |
5245 | gfc_error ("Expected formal argument list in function " | |
1a9745d2 | 5246 | "definition at %C"); |
9b435b6d | 5247 | m = MATCH_ERROR; |
5248 | goto cleanup; | |
5249 | } | |
4ee9c684 | 5250 | else if (m == MATCH_ERROR) |
5251 | goto cleanup; | |
5252 | ||
5253 | result = NULL; | |
5254 | ||
c5d33754 | 5255 | /* According to the draft, the bind(c) and result clause can |
5256 | come in either order after the formal_arg_list (i.e., either | |
5257 | can be first, both can exist together or by themselves or neither | |
5258 | one). Therefore, the match_result can't match the end of the | |
5259 | string, and check for the bind(c) or result clause in either order. */ | |
5260 | found_match = gfc_match_eos (); | |
5261 | ||
5262 | /* Make sure that it isn't already declared as BIND(C). If it is, it | |
5263 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5264 | not allowed for procedures. */ | |
5265 | if (sym->attr.is_bind_c == 1) | |
5266 | { | |
5267 | sym->attr.is_bind_c = 0; | |
5268 | if (sym->old_symbol != NULL) | |
5269 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5270 | "variables or common blocks", | |
5271 | &(sym->old_symbol->declared_at)); | |
5272 | else | |
5273 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5274 | "variables or common blocks", &gfc_current_locus); | |
4ee9c684 | 5275 | } |
5276 | ||
c5d33754 | 5277 | if (found_match != MATCH_YES) |
4ee9c684 | 5278 | { |
c5d33754 | 5279 | /* If we haven't found the end-of-statement, look for a suffix. */ |
5280 | suffix_match = gfc_match_suffix (sym, &result); | |
5281 | if (suffix_match == MATCH_YES) | |
5282 | /* Need to get the eos now. */ | |
5283 | found_match = gfc_match_eos (); | |
5284 | else | |
5285 | found_match = suffix_match; | |
4ee9c684 | 5286 | } |
5287 | ||
c5d33754 | 5288 | if(found_match != MATCH_YES) |
5289 | m = MATCH_ERROR; | |
4ee9c684 | 5290 | else |
5291 | { | |
c5d33754 | 5292 | /* Make changes to the symbol. */ |
5293 | m = MATCH_ERROR; | |
5294 | ||
5295 | if (gfc_add_function (&sym->attr, sym->name, NULL) == FAILURE) | |
5296 | goto cleanup; | |
5297 | ||
5298 | if (gfc_missing_attr (&sym->attr, NULL) == FAILURE | |
5299 | || copy_prefix (&sym->attr, &sym->declared_at) == FAILURE) | |
5300 | goto cleanup; | |
4ee9c684 | 5301 | |
8d39570e | 5302 | /* Delay matching the function characteristics until after the |
077932f9 | 5303 | specification block by signalling kind=-1. */ |
8d39570e | 5304 | sym->declared_at = old_loc; |
5305 | if (current_ts.type != BT_UNKNOWN) | |
5306 | current_ts.kind = -1; | |
5307 | else | |
5308 | current_ts.kind = 0; | |
077932f9 | 5309 | |
c5d33754 | 5310 | if (result == NULL) |
5311 | { | |
0477d42d | 5312 | if (current_ts.type != BT_UNKNOWN |
5313 | && gfc_add_type (sym, ¤t_ts, &gfc_current_locus) == FAILURE) | |
5314 | goto cleanup; | |
c5d33754 | 5315 | sym->result = sym; |
5316 | } | |
5317 | else | |
5318 | { | |
0477d42d | 5319 | if (current_ts.type != BT_UNKNOWN |
5320 | && gfc_add_type (result, ¤t_ts, &gfc_current_locus) | |
5321 | == FAILURE) | |
5322 | goto cleanup; | |
c5d33754 | 5323 | sym->result = result; |
5324 | } | |
5325 | ||
a34926ba | 5326 | /* Warn if this procedure has the same name as an intrinsic. */ |
5327 | warn_intrinsic_shadow (sym, true); | |
5328 | ||
c5d33754 | 5329 | return MATCH_YES; |
5330 | } | |
4ee9c684 | 5331 | |
5332 | cleanup: | |
cbb9e6aa | 5333 | gfc_current_locus = old_loc; |
4ee9c684 | 5334 | return m; |
5335 | } | |
5336 | ||
1a9745d2 | 5337 | |
5338 | /* This is mostly a copy of parse.c(add_global_procedure) but modified to | |
5339 | pass the name of the entry, rather than the gfc_current_block name, and | |
5340 | to return false upon finding an existing global entry. */ | |
858f9894 | 5341 | |
5342 | static bool | |
1a9745d2 | 5343 | add_global_entry (const char *name, int sub) |
858f9894 | 5344 | { |
5345 | gfc_gsymbol *s; | |
8458f4ca | 5346 | enum gfc_symbol_type type; |
858f9894 | 5347 | |
5348 | s = gfc_get_gsymbol(name); | |
5b11d932 | 5349 | type = sub ? GSYM_SUBROUTINE : GSYM_FUNCTION; |
858f9894 | 5350 | |
5351 | if (s->defined | |
1a9745d2 | 5352 | || (s->type != GSYM_UNKNOWN |
5b11d932 | 5353 | && s->type != type)) |
cbbac028 | 5354 | gfc_global_used(s, NULL); |
858f9894 | 5355 | else |
5356 | { | |
5b11d932 | 5357 | s->type = type; |
858f9894 | 5358 | s->where = gfc_current_locus; |
5359 | s->defined = 1; | |
83aeedb9 | 5360 | s->ns = gfc_current_ns; |
858f9894 | 5361 | return true; |
5362 | } | |
5363 | return false; | |
5364 | } | |
4ee9c684 | 5365 | |
1a9745d2 | 5366 | |
4ee9c684 | 5367 | /* Match an ENTRY statement. */ |
5368 | ||
5369 | match | |
5370 | gfc_match_entry (void) | |
5371 | { | |
1b716045 | 5372 | gfc_symbol *proc; |
5373 | gfc_symbol *result; | |
5374 | gfc_symbol *entry; | |
4ee9c684 | 5375 | char name[GFC_MAX_SYMBOL_LEN + 1]; |
5376 | gfc_compile_state state; | |
5377 | match m; | |
1b716045 | 5378 | gfc_entry_list *el; |
7b5e1acc | 5379 | locus old_loc; |
d77f260f | 5380 | bool module_procedure; |
86f0974b | 5381 | char peek_char; |
5382 | match is_bind_c; | |
4ee9c684 | 5383 | |
5384 | m = gfc_match_name (name); | |
5385 | if (m != MATCH_YES) | |
5386 | return m; | |
5387 | ||
a3b81b0f | 5388 | if (gfc_notify_std (GFC_STD_F2008_OBS, "Fortran 2008 obsolescent feature: " |
5389 | "ENTRY statement at %C") == FAILURE) | |
5390 | return MATCH_ERROR; | |
5391 | ||
1b716045 | 5392 | state = gfc_current_state (); |
ea37f786 | 5393 | if (state != COMP_SUBROUTINE && state != COMP_FUNCTION) |
1b716045 | 5394 | { |
ea37f786 | 5395 | switch (state) |
5396 | { | |
5397 | case COMP_PROGRAM: | |
5398 | gfc_error ("ENTRY statement at %C cannot appear within a PROGRAM"); | |
5399 | break; | |
5400 | case COMP_MODULE: | |
5401 | gfc_error ("ENTRY statement at %C cannot appear within a MODULE"); | |
5402 | break; | |
5403 | case COMP_BLOCK_DATA: | |
1a9745d2 | 5404 | gfc_error ("ENTRY statement at %C cannot appear within " |
5405 | "a BLOCK DATA"); | |
ea37f786 | 5406 | break; |
5407 | case COMP_INTERFACE: | |
1a9745d2 | 5408 | gfc_error ("ENTRY statement at %C cannot appear within " |
5409 | "an INTERFACE"); | |
ea37f786 | 5410 | break; |
5411 | case COMP_DERIVED: | |
1a9745d2 | 5412 | gfc_error ("ENTRY statement at %C cannot appear within " |
5413 | "a DERIVED TYPE block"); | |
ea37f786 | 5414 | break; |
5415 | case COMP_IF: | |
1a9745d2 | 5416 | gfc_error ("ENTRY statement at %C cannot appear within " |
5417 | "an IF-THEN block"); | |
ea37f786 | 5418 | break; |
5419 | case COMP_DO: | |
55ea8666 | 5420 | case COMP_DO_CONCURRENT: |
1a9745d2 | 5421 | gfc_error ("ENTRY statement at %C cannot appear within " |
5422 | "a DO block"); | |
ea37f786 | 5423 | break; |
5424 | case COMP_SELECT: | |
1a9745d2 | 5425 | gfc_error ("ENTRY statement at %C cannot appear within " |
5426 | "a SELECT block"); | |
ea37f786 | 5427 | break; |
5428 | case COMP_FORALL: | |
1a9745d2 | 5429 | gfc_error ("ENTRY statement at %C cannot appear within " |
5430 | "a FORALL block"); | |
ea37f786 | 5431 | break; |
5432 | case COMP_WHERE: | |
1a9745d2 | 5433 | gfc_error ("ENTRY statement at %C cannot appear within " |
5434 | "a WHERE block"); | |
ea37f786 | 5435 | break; |
5436 | case COMP_CONTAINS: | |
1a9745d2 | 5437 | gfc_error ("ENTRY statement at %C cannot appear within " |
5438 | "a contained subprogram"); | |
ea37f786 | 5439 | break; |
5440 | default: | |
5441 | gfc_internal_error ("gfc_match_entry(): Bad state"); | |
5442 | } | |
1b716045 | 5443 | return MATCH_ERROR; |
5444 | } | |
5445 | ||
d77f260f | 5446 | module_procedure = gfc_current_ns->parent != NULL |
1a9745d2 | 5447 | && gfc_current_ns->parent->proc_name |
5448 | && gfc_current_ns->parent->proc_name->attr.flavor | |
5449 | == FL_MODULE; | |
d77f260f | 5450 | |
1b716045 | 5451 | if (gfc_current_ns->parent != NULL |
5452 | && gfc_current_ns->parent->proc_name | |
d77f260f | 5453 | && !module_procedure) |
1b716045 | 5454 | { |
5455 | gfc_error("ENTRY statement at %C cannot appear in a " | |
5456 | "contained procedure"); | |
5457 | return MATCH_ERROR; | |
5458 | } | |
5459 | ||
d77f260f | 5460 | /* Module function entries need special care in get_proc_name |
5461 | because previous references within the function will have | |
5462 | created symbols attached to the current namespace. */ | |
5463 | if (get_proc_name (name, &entry, | |
5464 | gfc_current_ns->parent != NULL | |
c1e4695a | 5465 | && module_procedure)) |
4ee9c684 | 5466 | return MATCH_ERROR; |
5467 | ||
1b716045 | 5468 | proc = gfc_current_block (); |
5469 | ||
86f0974b | 5470 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
5471 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5472 | not allowed for procedures. */ | |
5473 | if (entry->attr.is_bind_c == 1) | |
5474 | { | |
5475 | entry->attr.is_bind_c = 0; | |
5476 | if (entry->old_symbol != NULL) | |
5477 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5478 | "variables or common blocks", | |
5479 | &(entry->old_symbol->declared_at)); | |
5480 | else | |
5481 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5482 | "variables or common blocks", &gfc_current_locus); | |
5483 | } | |
5484 | ||
5485 | /* Check what next non-whitespace character is so we can tell if there | |
5486 | is the required parens if we have a BIND(C). */ | |
5487 | gfc_gobble_whitespace (); | |
e0be6f02 | 5488 | peek_char = gfc_peek_ascii_char (); |
86f0974b | 5489 | |
1b716045 | 5490 | if (state == COMP_SUBROUTINE) |
4ee9c684 | 5491 | { |
950683ed | 5492 | /* An entry in a subroutine. */ |
8cafc742 | 5493 | if (!gfc_current_ns->parent && !add_global_entry (name, 1)) |
858f9894 | 5494 | return MATCH_ERROR; |
5495 | ||
4ee9c684 | 5496 | m = gfc_match_formal_arglist (entry, 0, 1); |
5497 | if (m != MATCH_YES) | |
5498 | return MATCH_ERROR; | |
5499 | ||
75ae7f6c | 5500 | /* Call gfc_match_bind_c with allow_binding_name = true as ENTRY can |
5501 | never be an internal procedure. */ | |
5502 | is_bind_c = gfc_match_bind_c (entry, true); | |
86f0974b | 5503 | if (is_bind_c == MATCH_ERROR) |
5504 | return MATCH_ERROR; | |
5505 | if (is_bind_c == MATCH_YES) | |
5506 | { | |
5507 | if (peek_char != '(') | |
5508 | { | |
5509 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
5510 | return MATCH_ERROR; | |
5511 | } | |
5512 | if (gfc_add_is_bind_c (&(entry->attr), entry->name, &(entry->declared_at), 1) | |
5513 | == FAILURE) | |
5514 | return MATCH_ERROR; | |
5515 | } | |
5516 | ||
950683ed | 5517 | if (gfc_add_entry (&entry->attr, entry->name, NULL) == FAILURE |
5518 | || gfc_add_subroutine (&entry->attr, entry->name, NULL) == FAILURE) | |
4ee9c684 | 5519 | return MATCH_ERROR; |
1b716045 | 5520 | } |
5521 | else | |
5522 | { | |
7b5e1acc | 5523 | /* An entry in a function. |
1a9745d2 | 5524 | We need to take special care because writing |
5525 | ENTRY f() | |
5526 | as | |
5527 | ENTRY f | |
5528 | is allowed, whereas | |
5529 | ENTRY f() RESULT (r) | |
5530 | can't be written as | |
5531 | ENTRY f RESULT (r). */ | |
8cafc742 | 5532 | if (!gfc_current_ns->parent && !add_global_entry (name, 0)) |
858f9894 | 5533 | return MATCH_ERROR; |
5534 | ||
7b5e1acc | 5535 | old_loc = gfc_current_locus; |
5536 | if (gfc_match_eos () == MATCH_YES) | |
5537 | { | |
5538 | gfc_current_locus = old_loc; | |
5539 | /* Match the empty argument list, and add the interface to | |
5540 | the symbol. */ | |
5541 | m = gfc_match_formal_arglist (entry, 0, 1); | |
5542 | } | |
5543 | else | |
5544 | m = gfc_match_formal_arglist (entry, 0, 0); | |
5545 | ||
4ee9c684 | 5546 | if (m != MATCH_YES) |
5547 | return MATCH_ERROR; | |
5548 | ||
4ee9c684 | 5549 | result = NULL; |
5550 | ||
5551 | if (gfc_match_eos () == MATCH_YES) | |
5552 | { | |
950683ed | 5553 | if (gfc_add_entry (&entry->attr, entry->name, NULL) == FAILURE |
5554 | || gfc_add_function (&entry->attr, entry->name, NULL) == FAILURE) | |
4ee9c684 | 5555 | return MATCH_ERROR; |
5556 | ||
c6871095 | 5557 | entry->result = entry; |
4ee9c684 | 5558 | } |
5559 | else | |
5560 | { | |
86f0974b | 5561 | m = gfc_match_suffix (entry, &result); |
4ee9c684 | 5562 | if (m == MATCH_NO) |
5563 | gfc_syntax_error (ST_ENTRY); | |
5564 | if (m != MATCH_YES) | |
5565 | return MATCH_ERROR; | |
5566 | ||
86f0974b | 5567 | if (result) |
5568 | { | |
5569 | if (gfc_add_result (&result->attr, result->name, NULL) == FAILURE | |
5570 | || gfc_add_entry (&entry->attr, result->name, NULL) == FAILURE | |
5571 | || gfc_add_function (&entry->attr, result->name, NULL) | |
5572 | == FAILURE) | |
5573 | return MATCH_ERROR; | |
5574 | entry->result = result; | |
5575 | } | |
5576 | else | |
5577 | { | |
5578 | if (gfc_add_entry (&entry->attr, entry->name, NULL) == FAILURE | |
5579 | || gfc_add_function (&entry->attr, entry->name, NULL) == FAILURE) | |
5580 | return MATCH_ERROR; | |
5581 | entry->result = entry; | |
5582 | } | |
4ee9c684 | 5583 | } |
4ee9c684 | 5584 | } |
5585 | ||
5586 | if (gfc_match_eos () != MATCH_YES) | |
5587 | { | |
5588 | gfc_syntax_error (ST_ENTRY); | |
5589 | return MATCH_ERROR; | |
5590 | } | |
5591 | ||
1b716045 | 5592 | entry->attr.recursive = proc->attr.recursive; |
5593 | entry->attr.elemental = proc->attr.elemental; | |
5594 | entry->attr.pure = proc->attr.pure; | |
4ee9c684 | 5595 | |
1b716045 | 5596 | el = gfc_get_entry_list (); |
5597 | el->sym = entry; | |
5598 | el->next = gfc_current_ns->entries; | |
5599 | gfc_current_ns->entries = el; | |
5600 | if (el->next) | |
5601 | el->id = el->next->id + 1; | |
5602 | else | |
5603 | el->id = 1; | |
4ee9c684 | 5604 | |
1b716045 | 5605 | new_st.op = EXEC_ENTRY; |
5606 | new_st.ext.entry = el; | |
5607 | ||
5608 | return MATCH_YES; | |
4ee9c684 | 5609 | } |
5610 | ||
5611 | ||
5612 | /* Match a subroutine statement, including optional prefixes. */ | |
5613 | ||
5614 | match | |
5615 | gfc_match_subroutine (void) | |
5616 | { | |
5617 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5618 | gfc_symbol *sym; | |
5619 | match m; | |
c5d33754 | 5620 | match is_bind_c; |
5621 | char peek_char; | |
75ae7f6c | 5622 | bool allow_binding_name; |
4ee9c684 | 5623 | |
5624 | if (gfc_current_state () != COMP_NONE | |
5625 | && gfc_current_state () != COMP_INTERFACE | |
5626 | && gfc_current_state () != COMP_CONTAINS) | |
5627 | return MATCH_NO; | |
5628 | ||
077932f9 | 5629 | m = gfc_match_prefix (NULL); |
4ee9c684 | 5630 | if (m != MATCH_YES) |
5631 | return m; | |
5632 | ||
5633 | m = gfc_match ("subroutine% %n", name); | |
5634 | if (m != MATCH_YES) | |
5635 | return m; | |
5636 | ||
d77f260f | 5637 | if (get_proc_name (name, &sym, false)) |
4ee9c684 | 5638 | return MATCH_ERROR; |
1e057e9b | 5639 | |
22c1d301 | 5640 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if |
5641 | the symbol existed before. */ | |
5642 | sym->declared_at = gfc_current_locus; | |
5643 | ||
1e057e9b | 5644 | if (add_hidden_procptr_result (sym) == SUCCESS) |
5645 | sym = sym->result; | |
5646 | ||
4ee9c684 | 5647 | gfc_new_block = sym; |
5648 | ||
c5d33754 | 5649 | /* Check what next non-whitespace character is so we can tell if there |
86f0974b | 5650 | is the required parens if we have a BIND(C). */ |
c5d33754 | 5651 | gfc_gobble_whitespace (); |
e0be6f02 | 5652 | peek_char = gfc_peek_ascii_char (); |
c5d33754 | 5653 | |
950683ed | 5654 | if (gfc_add_subroutine (&sym->attr, sym->name, NULL) == FAILURE) |
4ee9c684 | 5655 | return MATCH_ERROR; |
5656 | ||
5657 | if (gfc_match_formal_arglist (sym, 0, 1) != MATCH_YES) | |
5658 | return MATCH_ERROR; | |
5659 | ||
c5d33754 | 5660 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
5661 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5662 | not allowed for procedures. */ | |
5663 | if (sym->attr.is_bind_c == 1) | |
5664 | { | |
5665 | sym->attr.is_bind_c = 0; | |
5666 | if (sym->old_symbol != NULL) | |
5667 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5668 | "variables or common blocks", | |
5669 | &(sym->old_symbol->declared_at)); | |
5670 | else | |
5671 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5672 | "variables or common blocks", &gfc_current_locus); | |
5673 | } | |
75ae7f6c | 5674 | |
5675 | /* C binding names are not allowed for internal procedures. */ | |
5676 | if (gfc_current_state () == COMP_CONTAINS | |
5677 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
5678 | allow_binding_name = false; | |
5679 | else | |
5680 | allow_binding_name = true; | |
5681 | ||
c5d33754 | 5682 | /* Here, we are just checking if it has the bind(c) attribute, and if |
5683 | so, then we need to make sure it's all correct. If it doesn't, | |
5684 | we still need to continue matching the rest of the subroutine line. */ | |
75ae7f6c | 5685 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
c5d33754 | 5686 | if (is_bind_c == MATCH_ERROR) |
5687 | { | |
5688 | /* There was an attempt at the bind(c), but it was wrong. An | |
5689 | error message should have been printed w/in the gfc_match_bind_c | |
5690 | so here we'll just return the MATCH_ERROR. */ | |
5691 | return MATCH_ERROR; | |
5692 | } | |
5693 | ||
5694 | if (is_bind_c == MATCH_YES) | |
5695 | { | |
75ae7f6c | 5696 | /* The following is allowed in the Fortran 2008 draft. */ |
4518e961 | 5697 | if (gfc_current_state () == COMP_CONTAINS |
75ae7f6c | 5698 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
2dcae6c7 | 5699 | && gfc_notify_std (GFC_STD_F2008, "Fortran 2008: BIND(C) attribute " |
5700 | "at %L may not be specified for an internal " | |
5701 | "procedure", &gfc_current_locus) | |
75ae7f6c | 5702 | == FAILURE) |
5703 | return MATCH_ERROR; | |
5704 | ||
c5d33754 | 5705 | if (peek_char != '(') |
5706 | { | |
5707 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
5708 | return MATCH_ERROR; | |
5709 | } | |
5710 | if (gfc_add_is_bind_c (&(sym->attr), sym->name, &(sym->declared_at), 1) | |
5711 | == FAILURE) | |
5712 | return MATCH_ERROR; | |
5713 | } | |
5714 | ||
4ee9c684 | 5715 | if (gfc_match_eos () != MATCH_YES) |
5716 | { | |
5717 | gfc_syntax_error (ST_SUBROUTINE); | |
5718 | return MATCH_ERROR; | |
5719 | } | |
5720 | ||
5721 | if (copy_prefix (&sym->attr, &sym->declared_at) == FAILURE) | |
5722 | return MATCH_ERROR; | |
5723 | ||
a34926ba | 5724 | /* Warn if it has the same name as an intrinsic. */ |
5725 | warn_intrinsic_shadow (sym, false); | |
5726 | ||
4ee9c684 | 5727 | return MATCH_YES; |
5728 | } | |
5729 | ||
5730 | ||
c5d33754 | 5731 | /* Match a BIND(C) specifier, with the optional 'name=' specifier if |
5732 | given, and set the binding label in either the given symbol (if not | |
a0527218 | 5733 | NULL), or in the current_ts. The symbol may be NULL because we may |
c5d33754 | 5734 | encounter the BIND(C) before the declaration itself. Return |
5735 | MATCH_NO if what we're looking at isn't a BIND(C) specifier, | |
5736 | MATCH_ERROR if it is a BIND(C) clause but an error was encountered, | |
5737 | or MATCH_YES if the specifier was correct and the binding label and | |
5738 | bind(c) fields were set correctly for the given symbol or the | |
75ae7f6c | 5739 | current_ts. If allow_binding_name is false, no binding name may be |
5740 | given. */ | |
c5d33754 | 5741 | |
5742 | match | |
75ae7f6c | 5743 | gfc_match_bind_c (gfc_symbol *sym, bool allow_binding_name) |
c5d33754 | 5744 | { |
5745 | /* binding label, if exists */ | |
1d8a57d8 | 5746 | const char* binding_label = NULL; |
c5d33754 | 5747 | match double_quote; |
5748 | match single_quote; | |
c5d33754 | 5749 | |
5750 | /* Initialize the flag that specifies whether we encountered a NAME= | |
5751 | specifier or not. */ | |
5752 | has_name_equals = 0; | |
5753 | ||
c5d33754 | 5754 | /* This much we have to be able to match, in this order, if |
5755 | there is a bind(c) label. */ | |
5756 | if (gfc_match (" bind ( c ") != MATCH_YES) | |
5757 | return MATCH_NO; | |
5758 | ||
5759 | /* Now see if there is a binding label, or if we've reached the | |
5760 | end of the bind(c) attribute without one. */ | |
5761 | if (gfc_match_char (',') == MATCH_YES) | |
5762 | { | |
5763 | if (gfc_match (" name = ") != MATCH_YES) | |
5764 | { | |
5765 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
5766 | "at %C"); | |
5767 | /* should give an error message here */ | |
5768 | return MATCH_ERROR; | |
5769 | } | |
5770 | ||
5771 | has_name_equals = 1; | |
5772 | ||
5773 | /* Get the opening quote. */ | |
5774 | double_quote = MATCH_YES; | |
5775 | single_quote = MATCH_YES; | |
5776 | double_quote = gfc_match_char ('"'); | |
5777 | if (double_quote != MATCH_YES) | |
5778 | single_quote = gfc_match_char ('\''); | |
5779 | if (double_quote != MATCH_YES && single_quote != MATCH_YES) | |
5780 | { | |
5781 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
5782 | "at %C"); | |
5783 | return MATCH_ERROR; | |
5784 | } | |
5785 | ||
5786 | /* Grab the binding label, using functions that will not lower | |
5787 | case the names automatically. */ | |
7b2060ba | 5788 | if (gfc_match_name_C (&binding_label) != MATCH_YES) |
c5d33754 | 5789 | return MATCH_ERROR; |
5790 | ||
5791 | /* Get the closing quotation. */ | |
5792 | if (double_quote == MATCH_YES) | |
5793 | { | |
5794 | if (gfc_match_char ('"') != MATCH_YES) | |
5795 | { | |
5796 | gfc_error ("Missing closing quote '\"' for binding label at %C"); | |
5797 | /* User started string with '"' so looked to match it. */ | |
5798 | return MATCH_ERROR; | |
5799 | } | |
5800 | } | |
5801 | else | |
5802 | { | |
5803 | if (gfc_match_char ('\'') != MATCH_YES) | |
5804 | { | |
5805 | gfc_error ("Missing closing quote '\'' for binding label at %C"); | |
5806 | /* User started string with "'" char. */ | |
5807 | return MATCH_ERROR; | |
5808 | } | |
5809 | } | |
5810 | } | |
5811 | ||
5812 | /* Get the required right paren. */ | |
5813 | if (gfc_match_char (')') != MATCH_YES) | |
5814 | { | |
5815 | gfc_error ("Missing closing paren for binding label at %C"); | |
5816 | return MATCH_ERROR; | |
5817 | } | |
5818 | ||
75ae7f6c | 5819 | if (has_name_equals && !allow_binding_name) |
5820 | { | |
5821 | gfc_error ("No binding name is allowed in BIND(C) at %C"); | |
5822 | return MATCH_ERROR; | |
5823 | } | |
5824 | ||
5825 | if (has_name_equals && sym != NULL && sym->attr.dummy) | |
5826 | { | |
5827 | gfc_error ("For dummy procedure %s, no binding name is " | |
5828 | "allowed in BIND(C) at %C", sym->name); | |
5829 | return MATCH_ERROR; | |
5830 | } | |
5831 | ||
5832 | ||
c5d33754 | 5833 | /* Save the binding label to the symbol. If sym is null, we're |
5834 | probably matching the typespec attributes of a declaration and | |
5835 | haven't gotten the name yet, and therefore, no symbol yet. */ | |
7b2060ba | 5836 | if (binding_label) |
c5d33754 | 5837 | { |
5838 | if (sym != NULL) | |
7b2060ba | 5839 | sym->binding_label = binding_label; |
c5d33754 | 5840 | else |
7b2060ba | 5841 | curr_binding_label = binding_label; |
c5d33754 | 5842 | } |
75ae7f6c | 5843 | else if (allow_binding_name) |
c5d33754 | 5844 | { |
5845 | /* No binding label, but if symbol isn't null, we | |
75ae7f6c | 5846 | can set the label for it here. |
5847 | If name="" or allow_binding_name is false, no C binding name is | |
5848 | created. */ | |
c5d33754 | 5849 | if (sym != NULL && sym->name != NULL && has_name_equals == 0) |
7b2060ba | 5850 | sym->binding_label = IDENTIFIER_POINTER (get_identifier (sym->name)); |
c5d33754 | 5851 | } |
94fa7146 | 5852 | |
5cf92482 | 5853 | if (has_name_equals && gfc_current_state () == COMP_INTERFACE |
5854 | && current_interface.type == INTERFACE_ABSTRACT) | |
94fa7146 | 5855 | { |
5856 | gfc_error ("NAME not allowed on BIND(C) for ABSTRACT INTERFACE at %C"); | |
5857 | return MATCH_ERROR; | |
5858 | } | |
5859 | ||
c5d33754 | 5860 | return MATCH_YES; |
5861 | } | |
5862 | ||
5863 | ||
231e961a | 5864 | /* Return nonzero if we're currently compiling a contained procedure. */ |
c0985832 | 5865 | |
5866 | static int | |
5867 | contained_procedure (void) | |
5868 | { | |
1c343287 | 5869 | gfc_state_data *s = gfc_state_stack; |
c0985832 | 5870 | |
1c343287 | 5871 | if ((s->state == COMP_SUBROUTINE || s->state == COMP_FUNCTION) |
5872 | && s->previous != NULL && s->previous->state == COMP_CONTAINS) | |
5873 | return 1; | |
c0985832 | 5874 | |
5875 | return 0; | |
5876 | } | |
5877 | ||
e14bee04 | 5878 | /* Set the kind of each enumerator. The kind is selected such that it is |
3b6a4b41 | 5879 | interoperable with the corresponding C enumeration type, making |
5880 | sure that -fshort-enums is honored. */ | |
5881 | ||
5882 | static void | |
5883 | set_enum_kind(void) | |
5884 | { | |
5885 | enumerator_history *current_history = NULL; | |
5886 | int kind; | |
5887 | int i; | |
5888 | ||
5889 | if (max_enum == NULL || enum_history == NULL) | |
5890 | return; | |
5891 | ||
6f092e31 | 5892 | if (!flag_short_enums) |
e14bee04 | 5893 | return; |
5894 | ||
3b6a4b41 | 5895 | i = 0; |
5896 | do | |
5897 | { | |
5898 | kind = gfc_integer_kinds[i++].kind; | |
5899 | } | |
e14bee04 | 5900 | while (kind < gfc_c_int_kind |
3b6a4b41 | 5901 | && gfc_check_integer_range (max_enum->initializer->value.integer, |
5902 | kind) != ARITH_OK); | |
5903 | ||
5904 | current_history = enum_history; | |
5905 | while (current_history != NULL) | |
5906 | { | |
5907 | current_history->sym->ts.kind = kind; | |
5908 | current_history = current_history->next; | |
5909 | } | |
5910 | } | |
5911 | ||
1a9745d2 | 5912 | |
4ee9c684 | 5913 | /* Match any of the various end-block statements. Returns the type of |
6a7084d7 | 5914 | END to the caller. The END INTERFACE, END IF, END DO, END SELECT |
5915 | and END BLOCK statements cannot be replaced by a single END statement. */ | |
4ee9c684 | 5916 | |
5917 | match | |
1a9745d2 | 5918 | gfc_match_end (gfc_statement *st) |
4ee9c684 | 5919 | { |
5920 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5921 | gfc_compile_state state; | |
5922 | locus old_loc; | |
5923 | const char *block_name; | |
5924 | const char *target; | |
c0985832 | 5925 | int eos_ok; |
4ee9c684 | 5926 | match m; |
5927 | ||
cbb9e6aa | 5928 | old_loc = gfc_current_locus; |
4ee9c684 | 5929 | if (gfc_match ("end") != MATCH_YES) |
5930 | return MATCH_NO; | |
5931 | ||
5932 | state = gfc_current_state (); | |
1a9745d2 | 5933 | block_name = gfc_current_block () == NULL |
5934 | ? NULL : gfc_current_block ()->name; | |
4ee9c684 | 5935 | |
d18a512a | 5936 | switch (state) |
4ee9c684 | 5937 | { |
d18a512a | 5938 | case COMP_ASSOCIATE: |
5939 | case COMP_BLOCK: | |
5ebb0bc6 | 5940 | if (!strncmp (block_name, "block@", strlen("block@"))) |
d18a512a | 5941 | block_name = NULL; |
5942 | break; | |
5943 | ||
5944 | case COMP_CONTAINS: | |
5945 | case COMP_DERIVED_CONTAINS: | |
4ee9c684 | 5946 | state = gfc_state_stack->previous->state; |
1a9745d2 | 5947 | block_name = gfc_state_stack->previous->sym == NULL |
5948 | ? NULL : gfc_state_stack->previous->sym->name; | |
d18a512a | 5949 | break; |
5950 | ||
5951 | default: | |
5952 | break; | |
4ee9c684 | 5953 | } |
5954 | ||
5955 | switch (state) | |
5956 | { | |
5957 | case COMP_NONE: | |
5958 | case COMP_PROGRAM: | |
5959 | *st = ST_END_PROGRAM; | |
5960 | target = " program"; | |
c0985832 | 5961 | eos_ok = 1; |
4ee9c684 | 5962 | break; |
5963 | ||
5964 | case COMP_SUBROUTINE: | |
5965 | *st = ST_END_SUBROUTINE; | |
5966 | target = " subroutine"; | |
c0985832 | 5967 | eos_ok = !contained_procedure (); |
4ee9c684 | 5968 | break; |
5969 | ||
5970 | case COMP_FUNCTION: | |
5971 | *st = ST_END_FUNCTION; | |
5972 | target = " function"; | |
c0985832 | 5973 | eos_ok = !contained_procedure (); |
4ee9c684 | 5974 | break; |
5975 | ||
5976 | case COMP_BLOCK_DATA: | |
5977 | *st = ST_END_BLOCK_DATA; | |
5978 | target = " block data"; | |
c0985832 | 5979 | eos_ok = 1; |
4ee9c684 | 5980 | break; |
5981 | ||
5982 | case COMP_MODULE: | |
5983 | *st = ST_END_MODULE; | |
5984 | target = " module"; | |
c0985832 | 5985 | eos_ok = 1; |
4ee9c684 | 5986 | break; |
5987 | ||
5988 | case COMP_INTERFACE: | |
5989 | *st = ST_END_INTERFACE; | |
5990 | target = " interface"; | |
c0985832 | 5991 | eos_ok = 0; |
4ee9c684 | 5992 | break; |
5993 | ||
5994 | case COMP_DERIVED: | |
7fd88f6e | 5995 | case COMP_DERIVED_CONTAINS: |
4ee9c684 | 5996 | *st = ST_END_TYPE; |
5997 | target = " type"; | |
c0985832 | 5998 | eos_ok = 0; |
4ee9c684 | 5999 | break; |
6000 | ||
d18a512a | 6001 | case COMP_ASSOCIATE: |
6002 | *st = ST_END_ASSOCIATE; | |
6003 | target = " associate"; | |
6004 | eos_ok = 0; | |
6005 | break; | |
6006 | ||
6a7084d7 | 6007 | case COMP_BLOCK: |
6008 | *st = ST_END_BLOCK; | |
6009 | target = " block"; | |
6010 | eos_ok = 0; | |
6011 | break; | |
6012 | ||
4ee9c684 | 6013 | case COMP_IF: |
6014 | *st = ST_ENDIF; | |
6015 | target = " if"; | |
c0985832 | 6016 | eos_ok = 0; |
4ee9c684 | 6017 | break; |
6018 | ||
6019 | case COMP_DO: | |
55ea8666 | 6020 | case COMP_DO_CONCURRENT: |
4ee9c684 | 6021 | *st = ST_ENDDO; |
6022 | target = " do"; | |
c0985832 | 6023 | eos_ok = 0; |
4ee9c684 | 6024 | break; |
6025 | ||
c6cd3066 | 6026 | case COMP_CRITICAL: |
6027 | *st = ST_END_CRITICAL; | |
6028 | target = " critical"; | |
6029 | eos_ok = 0; | |
6030 | break; | |
6031 | ||
4ee9c684 | 6032 | case COMP_SELECT: |
1de1b1a9 | 6033 | case COMP_SELECT_TYPE: |
4ee9c684 | 6034 | *st = ST_END_SELECT; |
6035 | target = " select"; | |
c0985832 | 6036 | eos_ok = 0; |
4ee9c684 | 6037 | break; |
6038 | ||
6039 | case COMP_FORALL: | |
6040 | *st = ST_END_FORALL; | |
6041 | target = " forall"; | |
c0985832 | 6042 | eos_ok = 0; |
4ee9c684 | 6043 | break; |
6044 | ||
6045 | case COMP_WHERE: | |
6046 | *st = ST_END_WHERE; | |
6047 | target = " where"; | |
c0985832 | 6048 | eos_ok = 0; |
4ee9c684 | 6049 | break; |
6050 | ||
3b6a4b41 | 6051 | case COMP_ENUM: |
6052 | *st = ST_END_ENUM; | |
6053 | target = " enum"; | |
6054 | eos_ok = 0; | |
6055 | last_initializer = NULL; | |
6056 | set_enum_kind (); | |
6057 | gfc_free_enum_history (); | |
6058 | break; | |
6059 | ||
4ee9c684 | 6060 | default: |
6061 | gfc_error ("Unexpected END statement at %C"); | |
6062 | goto cleanup; | |
6063 | } | |
6064 | ||
6065 | if (gfc_match_eos () == MATCH_YES) | |
6066 | { | |
4b20e9cf | 6067 | if (!eos_ok && (*st == ST_END_SUBROUTINE || *st == ST_END_FUNCTION)) |
6068 | { | |
6069 | if (gfc_notify_std (GFC_STD_F2008, "Fortran 2008: END statement " | |
6070 | "instead of %s statement at %L", | |
6071 | gfc_ascii_statement (*st), &old_loc) == FAILURE) | |
6072 | goto cleanup; | |
6073 | } | |
6074 | else if (!eos_ok) | |
4ee9c684 | 6075 | { |
f6d0e37a | 6076 | /* We would have required END [something]. */ |
d197c9ee | 6077 | gfc_error ("%s statement expected at %L", |
6078 | gfc_ascii_statement (*st), &old_loc); | |
4ee9c684 | 6079 | goto cleanup; |
6080 | } | |
6081 | ||
6082 | return MATCH_YES; | |
6083 | } | |
6084 | ||
6085 | /* Verify that we've got the sort of end-block that we're expecting. */ | |
6086 | if (gfc_match (target) != MATCH_YES) | |
6087 | { | |
6088 | gfc_error ("Expecting %s statement at %C", gfc_ascii_statement (*st)); | |
6089 | goto cleanup; | |
6090 | } | |
6091 | ||
6092 | /* If we're at the end, make sure a block name wasn't required. */ | |
6093 | if (gfc_match_eos () == MATCH_YES) | |
6094 | { | |
6095 | ||
0d0ce415 | 6096 | if (*st != ST_ENDDO && *st != ST_ENDIF && *st != ST_END_SELECT |
c6cd3066 | 6097 | && *st != ST_END_FORALL && *st != ST_END_WHERE && *st != ST_END_BLOCK |
d18a512a | 6098 | && *st != ST_END_ASSOCIATE && *st != ST_END_CRITICAL) |
4ee9c684 | 6099 | return MATCH_YES; |
6100 | ||
6a7084d7 | 6101 | if (!block_name) |
4ee9c684 | 6102 | return MATCH_YES; |
6103 | ||
6104 | gfc_error ("Expected block name of '%s' in %s statement at %C", | |
6105 | block_name, gfc_ascii_statement (*st)); | |
6106 | ||
6107 | return MATCH_ERROR; | |
6108 | } | |
6109 | ||
6110 | /* END INTERFACE has a special handler for its several possible endings. */ | |
6111 | if (*st == ST_END_INTERFACE) | |
6112 | return gfc_match_end_interface (); | |
6113 | ||
f6d0e37a | 6114 | /* We haven't hit the end of statement, so what is left must be an |
6115 | end-name. */ | |
4ee9c684 | 6116 | m = gfc_match_space (); |
6117 | if (m == MATCH_YES) | |
6118 | m = gfc_match_name (name); | |
6119 | ||
6120 | if (m == MATCH_NO) | |
6121 | gfc_error ("Expected terminating name at %C"); | |
6122 | if (m != MATCH_YES) | |
6123 | goto cleanup; | |
6124 | ||
6125 | if (block_name == NULL) | |
6126 | goto syntax; | |
6127 | ||
1e057e9b | 6128 | if (strcmp (name, block_name) != 0 && strcmp (block_name, "ppr@") != 0) |
4ee9c684 | 6129 | { |
6130 | gfc_error ("Expected label '%s' for %s statement at %C", block_name, | |
6131 | gfc_ascii_statement (*st)); | |
6132 | goto cleanup; | |
6133 | } | |
1e057e9b | 6134 | /* Procedure pointer as function result. */ |
6135 | else if (strcmp (block_name, "ppr@") == 0 | |
6136 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) != 0) | |
6137 | { | |
6138 | gfc_error ("Expected label '%s' for %s statement at %C", | |
6139 | gfc_current_block ()->ns->proc_name->name, | |
6140 | gfc_ascii_statement (*st)); | |
6141 | goto cleanup; | |
6142 | } | |
4ee9c684 | 6143 | |
6144 | if (gfc_match_eos () == MATCH_YES) | |
6145 | return MATCH_YES; | |
6146 | ||
6147 | syntax: | |
6148 | gfc_syntax_error (*st); | |
6149 | ||
6150 | cleanup: | |
cbb9e6aa | 6151 | gfc_current_locus = old_loc; |
4ee9c684 | 6152 | return MATCH_ERROR; |
6153 | } | |
6154 | ||
6155 | ||
6156 | ||
6157 | /***************** Attribute declaration statements ****************/ | |
6158 | ||
6159 | /* Set the attribute of a single variable. */ | |
6160 | ||
6161 | static match | |
6162 | attr_decl1 (void) | |
6163 | { | |
6164 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6165 | gfc_array_spec *as; | |
6166 | gfc_symbol *sym; | |
6167 | locus var_locus; | |
6168 | match m; | |
6169 | ||
6170 | as = NULL; | |
6171 | ||
6172 | m = gfc_match_name (name); | |
6173 | if (m != MATCH_YES) | |
6174 | goto cleanup; | |
6175 | ||
36b0a1b0 | 6176 | if (find_special (name, &sym, false)) |
4ee9c684 | 6177 | return MATCH_ERROR; |
6178 | ||
f3e89339 | 6179 | if (check_function_name (name) == FAILURE) |
6180 | { | |
6181 | m = MATCH_ERROR; | |
6182 | goto cleanup; | |
6183 | } | |
6184 | ||
cbb9e6aa | 6185 | var_locus = gfc_current_locus; |
4ee9c684 | 6186 | |
6187 | /* Deal with possible array specification for certain attributes. */ | |
6188 | if (current_attr.dimension | |
aff518b0 | 6189 | || current_attr.codimension |
4ee9c684 | 6190 | || current_attr.allocatable |
6191 | || current_attr.pointer | |
6192 | || current_attr.target) | |
6193 | { | |
aff518b0 | 6194 | m = gfc_match_array_spec (&as, !current_attr.codimension, |
6195 | !current_attr.dimension | |
6196 | && !current_attr.pointer | |
6197 | && !current_attr.target); | |
4ee9c684 | 6198 | if (m == MATCH_ERROR) |
6199 | goto cleanup; | |
6200 | ||
6201 | if (current_attr.dimension && m == MATCH_NO) | |
6202 | { | |
1a9745d2 | 6203 | gfc_error ("Missing array specification at %L in DIMENSION " |
6204 | "statement", &var_locus); | |
4ee9c684 | 6205 | m = MATCH_ERROR; |
6206 | goto cleanup; | |
6207 | } | |
6208 | ||
13aebeb0 | 6209 | if (current_attr.dimension && sym->value) |
6210 | { | |
6211 | gfc_error ("Dimensions specified for %s at %L after its " | |
6212 | "initialisation", sym->name, &var_locus); | |
6213 | m = MATCH_ERROR; | |
6214 | goto cleanup; | |
6215 | } | |
6216 | ||
aff518b0 | 6217 | if (current_attr.codimension && m == MATCH_NO) |
6218 | { | |
6219 | gfc_error ("Missing array specification at %L in CODIMENSION " | |
6220 | "statement", &var_locus); | |
6221 | m = MATCH_ERROR; | |
6222 | goto cleanup; | |
6223 | } | |
6224 | ||
4ee9c684 | 6225 | if ((current_attr.allocatable || current_attr.pointer) |
6226 | && (m == MATCH_YES) && (as->type != AS_DEFERRED)) | |
6227 | { | |
1a9745d2 | 6228 | gfc_error ("Array specification must be deferred at %L", &var_locus); |
4ee9c684 | 6229 | m = MATCH_ERROR; |
6230 | goto cleanup; | |
6231 | } | |
6232 | } | |
6233 | ||
b3704193 | 6234 | /* Update symbol table. DIMENSION attribute is set in |
6235 | gfc_set_array_spec(). For CLASS variables, this must be applied | |
607ae689 | 6236 | to the first component, or '_data' field. */ |
a33fbb6f | 6237 | if (sym->ts.type == BT_CLASS && sym->ts.u.derived->attr.is_class) |
4ee9c684 | 6238 | { |
607ae689 | 6239 | if (gfc_copy_attr (&CLASS_DATA (sym)->attr, ¤t_attr, &var_locus) |
50b4b37b | 6240 | == FAILURE) |
b3704193 | 6241 | { |
6242 | m = MATCH_ERROR; | |
6243 | goto cleanup; | |
6244 | } | |
b3704193 | 6245 | } |
6246 | else | |
6247 | { | |
aff518b0 | 6248 | if (current_attr.dimension == 0 && current_attr.codimension == 0 |
6249 | && gfc_copy_attr (&sym->attr, ¤t_attr, &var_locus) == FAILURE) | |
b3704193 | 6250 | { |
6251 | m = MATCH_ERROR; | |
6252 | goto cleanup; | |
6253 | } | |
4ee9c684 | 6254 | } |
a33fbb6f | 6255 | |
fa102e56 | 6256 | if (sym->ts.type == BT_CLASS |
29dae2bf | 6257 | && gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as, false) == FAILURE) |
6258 | { | |
6259 | m = MATCH_ERROR; | |
6260 | goto cleanup; | |
6261 | } | |
4ee9c684 | 6262 | |
6263 | if (gfc_set_array_spec (sym, as, &var_locus) == FAILURE) | |
6264 | { | |
6265 | m = MATCH_ERROR; | |
6266 | goto cleanup; | |
6267 | } | |
e14bee04 | 6268 | |
b549d2a5 | 6269 | if (sym->attr.cray_pointee && sym->as != NULL) |
6270 | { | |
6271 | /* Fix the array spec. */ | |
6272 | m = gfc_mod_pointee_as (sym->as); | |
6273 | if (m == MATCH_ERROR) | |
6274 | goto cleanup; | |
6275 | } | |
4ee9c684 | 6276 | |
25dd7350 | 6277 | if (gfc_add_attribute (&sym->attr, &var_locus) == FAILURE) |
14efb9b7 | 6278 | { |
6279 | m = MATCH_ERROR; | |
6280 | goto cleanup; | |
6281 | } | |
6282 | ||
4ee9c684 | 6283 | if ((current_attr.external || current_attr.intrinsic) |
6284 | && sym->attr.flavor != FL_PROCEDURE | |
950683ed | 6285 | && gfc_add_flavor (&sym->attr, FL_PROCEDURE, sym->name, NULL) == FAILURE) |
4ee9c684 | 6286 | { |
6287 | m = MATCH_ERROR; | |
6288 | goto cleanup; | |
6289 | } | |
6290 | ||
1e057e9b | 6291 | add_hidden_procptr_result (sym); |
6292 | ||
4ee9c684 | 6293 | return MATCH_YES; |
6294 | ||
6295 | cleanup: | |
6296 | gfc_free_array_spec (as); | |
6297 | return m; | |
6298 | } | |
6299 | ||
6300 | ||
6301 | /* Generic attribute declaration subroutine. Used for attributes that | |
6302 | just have a list of names. */ | |
6303 | ||
6304 | static match | |
6305 | attr_decl (void) | |
6306 | { | |
6307 | match m; | |
6308 | ||
6309 | /* Gobble the optional double colon, by simply ignoring the result | |
6310 | of gfc_match(). */ | |
6311 | gfc_match (" ::"); | |
6312 | ||
6313 | for (;;) | |
6314 | { | |
6315 | m = attr_decl1 (); | |
6316 | if (m != MATCH_YES) | |
6317 | break; | |
6318 | ||
6319 | if (gfc_match_eos () == MATCH_YES) | |
6320 | { | |
6321 | m = MATCH_YES; | |
6322 | break; | |
6323 | } | |
6324 | ||
6325 | if (gfc_match_char (',') != MATCH_YES) | |
6326 | { | |
6327 | gfc_error ("Unexpected character in variable list at %C"); | |
6328 | m = MATCH_ERROR; | |
6329 | break; | |
6330 | } | |
6331 | } | |
6332 | ||
6333 | return m; | |
6334 | } | |
6335 | ||
6336 | ||
b549d2a5 | 6337 | /* This routine matches Cray Pointer declarations of the form: |
6338 | pointer ( <pointer>, <pointee> ) | |
6339 | or | |
e14bee04 | 6340 | pointer ( <pointer1>, <pointee1> ), ( <pointer2>, <pointee2> ), ... |
6341 | The pointer, if already declared, should be an integer. Otherwise, we | |
b549d2a5 | 6342 | set it as BT_INTEGER with kind gfc_index_integer_kind. The pointee may |
6343 | be either a scalar, or an array declaration. No space is allocated for | |
e14bee04 | 6344 | the pointee. For the statement |
b549d2a5 | 6345 | pointer (ipt, ar(10)) |
6346 | any subsequent uses of ar will be translated (in C-notation) as | |
e14bee04 | 6347 | ar(i) => ((<type> *) ipt)(i) |
b7bf3f81 | 6348 | After gimplification, pointee variable will disappear in the code. */ |
b549d2a5 | 6349 | |
6350 | static match | |
6351 | cray_pointer_decl (void) | |
6352 | { | |
6353 | match m; | |
aff518b0 | 6354 | gfc_array_spec *as = NULL; |
b549d2a5 | 6355 | gfc_symbol *cptr; /* Pointer symbol. */ |
6356 | gfc_symbol *cpte; /* Pointee symbol. */ | |
6357 | locus var_locus; | |
6358 | bool done = false; | |
6359 | ||
6360 | while (!done) | |
6361 | { | |
6362 | if (gfc_match_char ('(') != MATCH_YES) | |
6363 | { | |
6364 | gfc_error ("Expected '(' at %C"); | |
e14bee04 | 6365 | return MATCH_ERROR; |
b549d2a5 | 6366 | } |
e14bee04 | 6367 | |
b549d2a5 | 6368 | /* Match pointer. */ |
6369 | var_locus = gfc_current_locus; | |
6370 | gfc_clear_attr (¤t_attr); | |
6371 | gfc_add_cray_pointer (¤t_attr, &var_locus); | |
6372 | current_ts.type = BT_INTEGER; | |
6373 | current_ts.kind = gfc_index_integer_kind; | |
6374 | ||
e14bee04 | 6375 | m = gfc_match_symbol (&cptr, 0); |
b549d2a5 | 6376 | if (m != MATCH_YES) |
6377 | { | |
6378 | gfc_error ("Expected variable name at %C"); | |
6379 | return m; | |
6380 | } | |
e14bee04 | 6381 | |
b549d2a5 | 6382 | if (gfc_add_cray_pointer (&cptr->attr, &var_locus) == FAILURE) |
6383 | return MATCH_ERROR; | |
6384 | ||
e14bee04 | 6385 | gfc_set_sym_referenced (cptr); |
b549d2a5 | 6386 | |
6387 | if (cptr->ts.type == BT_UNKNOWN) /* Override the type, if necessary. */ | |
6388 | { | |
6389 | cptr->ts.type = BT_INTEGER; | |
e14bee04 | 6390 | cptr->ts.kind = gfc_index_integer_kind; |
b549d2a5 | 6391 | } |
6392 | else if (cptr->ts.type != BT_INTEGER) | |
6393 | { | |
7698a624 | 6394 | gfc_error ("Cray pointer at %C must be an integer"); |
b549d2a5 | 6395 | return MATCH_ERROR; |
6396 | } | |
6397 | else if (cptr->ts.kind < gfc_index_integer_kind) | |
6398 | gfc_warning ("Cray pointer at %C has %d bytes of precision;" | |
7698a624 | 6399 | " memory addresses require %d bytes", |
1a9745d2 | 6400 | cptr->ts.kind, gfc_index_integer_kind); |
b549d2a5 | 6401 | |
6402 | if (gfc_match_char (',') != MATCH_YES) | |
6403 | { | |
6404 | gfc_error ("Expected \",\" at %C"); | |
e14bee04 | 6405 | return MATCH_ERROR; |
b549d2a5 | 6406 | } |
6407 | ||
e14bee04 | 6408 | /* Match Pointee. */ |
b549d2a5 | 6409 | var_locus = gfc_current_locus; |
6410 | gfc_clear_attr (¤t_attr); | |
6411 | gfc_add_cray_pointee (¤t_attr, &var_locus); | |
6412 | current_ts.type = BT_UNKNOWN; | |
6413 | current_ts.kind = 0; | |
6414 | ||
6415 | m = gfc_match_symbol (&cpte, 0); | |
6416 | if (m != MATCH_YES) | |
6417 | { | |
6418 | gfc_error ("Expected variable name at %C"); | |
6419 | return m; | |
6420 | } | |
e14bee04 | 6421 | |
b549d2a5 | 6422 | /* Check for an optional array spec. */ |
aff518b0 | 6423 | m = gfc_match_array_spec (&as, true, false); |
b549d2a5 | 6424 | if (m == MATCH_ERROR) |
6425 | { | |
6426 | gfc_free_array_spec (as); | |
6427 | return m; | |
6428 | } | |
6429 | else if (m == MATCH_NO) | |
6430 | { | |
6431 | gfc_free_array_spec (as); | |
6432 | as = NULL; | |
6433 | } | |
6434 | ||
6435 | if (gfc_add_cray_pointee (&cpte->attr, &var_locus) == FAILURE) | |
6436 | return MATCH_ERROR; | |
6437 | ||
6438 | gfc_set_sym_referenced (cpte); | |
6439 | ||
6440 | if (cpte->as == NULL) | |
6441 | { | |
6442 | if (gfc_set_array_spec (cpte, as, &var_locus) == FAILURE) | |
6443 | gfc_internal_error ("Couldn't set Cray pointee array spec."); | |
6444 | } | |
6445 | else if (as != NULL) | |
6446 | { | |
7698a624 | 6447 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
b549d2a5 | 6448 | gfc_free_array_spec (as); |
6449 | return MATCH_ERROR; | |
6450 | } | |
6451 | ||
6452 | as = NULL; | |
6453 | ||
6454 | if (cpte->as != NULL) | |
6455 | { | |
6456 | /* Fix array spec. */ | |
6457 | m = gfc_mod_pointee_as (cpte->as); | |
6458 | if (m == MATCH_ERROR) | |
6459 | return m; | |
6460 | } | |
6461 | ||
6462 | /* Point the Pointee at the Pointer. */ | |
b7bf3f81 | 6463 | cpte->cp_pointer = cptr; |
b549d2a5 | 6464 | |
6465 | if (gfc_match_char (')') != MATCH_YES) | |
6466 | { | |
6467 | gfc_error ("Expected \")\" at %C"); | |
6468 | return MATCH_ERROR; | |
6469 | } | |
6470 | m = gfc_match_char (','); | |
6471 | if (m != MATCH_YES) | |
6472 | done = true; /* Stop searching for more declarations. */ | |
6473 | ||
6474 | } | |
6475 | ||
6476 | if (m == MATCH_ERROR /* Failed when trying to find ',' above. */ | |
6477 | || gfc_match_eos () != MATCH_YES) | |
6478 | { | |
6479 | gfc_error ("Expected \",\" or end of statement at %C"); | |
6480 | return MATCH_ERROR; | |
6481 | } | |
6482 | return MATCH_YES; | |
6483 | } | |
6484 | ||
6485 | ||
4ee9c684 | 6486 | match |
6487 | gfc_match_external (void) | |
6488 | { | |
6489 | ||
6490 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 6491 | current_attr.external = 1; |
4ee9c684 | 6492 | |
6493 | return attr_decl (); | |
6494 | } | |
6495 | ||
6496 | ||
4ee9c684 | 6497 | match |
6498 | gfc_match_intent (void) | |
6499 | { | |
6500 | sym_intent intent; | |
6501 | ||
6a7084d7 | 6502 | /* This is not allowed within a BLOCK construct! */ |
6503 | if (gfc_current_state () == COMP_BLOCK) | |
6504 | { | |
6505 | gfc_error ("INTENT is not allowed inside of BLOCK at %C"); | |
6506 | return MATCH_ERROR; | |
6507 | } | |
6508 | ||
4ee9c684 | 6509 | intent = match_intent_spec (); |
6510 | if (intent == INTENT_UNKNOWN) | |
6511 | return MATCH_ERROR; | |
6512 | ||
6513 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 6514 | current_attr.intent = intent; |
4ee9c684 | 6515 | |
6516 | return attr_decl (); | |
6517 | } | |
6518 | ||
6519 | ||
6520 | match | |
6521 | gfc_match_intrinsic (void) | |
6522 | { | |
6523 | ||
6524 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 6525 | current_attr.intrinsic = 1; |
4ee9c684 | 6526 | |
6527 | return attr_decl (); | |
6528 | } | |
6529 | ||
6530 | ||
6531 | match | |
6532 | gfc_match_optional (void) | |
6533 | { | |
6a7084d7 | 6534 | /* This is not allowed within a BLOCK construct! */ |
6535 | if (gfc_current_state () == COMP_BLOCK) | |
6536 | { | |
6537 | gfc_error ("OPTIONAL is not allowed inside of BLOCK at %C"); | |
6538 | return MATCH_ERROR; | |
6539 | } | |
4ee9c684 | 6540 | |
6541 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 6542 | current_attr.optional = 1; |
4ee9c684 | 6543 | |
6544 | return attr_decl (); | |
6545 | } | |
6546 | ||
6547 | ||
6548 | match | |
6549 | gfc_match_pointer (void) | |
6550 | { | |
b549d2a5 | 6551 | gfc_gobble_whitespace (); |
e0be6f02 | 6552 | if (gfc_peek_ascii_char () == '(') |
b549d2a5 | 6553 | { |
6554 | if (!gfc_option.flag_cray_pointer) | |
6555 | { | |
1a9745d2 | 6556 | gfc_error ("Cray pointer declaration at %C requires -fcray-pointer " |
6557 | "flag"); | |
b549d2a5 | 6558 | return MATCH_ERROR; |
6559 | } | |
6560 | return cray_pointer_decl (); | |
6561 | } | |
6562 | else | |
6563 | { | |
6564 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 6565 | current_attr.pointer = 1; |
b549d2a5 | 6566 | |
6567 | return attr_decl (); | |
6568 | } | |
4ee9c684 | 6569 | } |
6570 | ||
6571 | ||
6572 | match | |
6573 | gfc_match_allocatable (void) | |
6574 | { | |
4ee9c684 | 6575 | gfc_clear_attr (¤t_attr); |
14efb9b7 | 6576 | current_attr.allocatable = 1; |
4ee9c684 | 6577 | |
6578 | return attr_decl (); | |
6579 | } | |
6580 | ||
6581 | ||
aff518b0 | 6582 | match |
6583 | gfc_match_codimension (void) | |
6584 | { | |
6585 | gfc_clear_attr (¤t_attr); | |
6586 | current_attr.codimension = 1; | |
6587 | ||
6588 | return attr_decl (); | |
6589 | } | |
6590 | ||
6591 | ||
b3c3927c | 6592 | match |
6593 | gfc_match_contiguous (void) | |
6594 | { | |
6595 | if (gfc_notify_std (GFC_STD_F2008, "Fortran 2008: CONTIGUOUS statement at %C") | |
6596 | == FAILURE) | |
6597 | return MATCH_ERROR; | |
6598 | ||
6599 | gfc_clear_attr (¤t_attr); | |
6600 | current_attr.contiguous = 1; | |
6601 | ||
6602 | return attr_decl (); | |
6603 | } | |
6604 | ||
6605 | ||
4ee9c684 | 6606 | match |
6607 | gfc_match_dimension (void) | |
6608 | { | |
4ee9c684 | 6609 | gfc_clear_attr (¤t_attr); |
14efb9b7 | 6610 | current_attr.dimension = 1; |
4ee9c684 | 6611 | |
6612 | return attr_decl (); | |
6613 | } | |
6614 | ||
6615 | ||
6616 | match | |
6617 | gfc_match_target (void) | |
6618 | { | |
4ee9c684 | 6619 | gfc_clear_attr (¤t_attr); |
14efb9b7 | 6620 | current_attr.target = 1; |
4ee9c684 | 6621 | |
6622 | return attr_decl (); | |
6623 | } | |
6624 | ||
6625 | ||
6626 | /* Match the list of entities being specified in a PUBLIC or PRIVATE | |
6627 | statement. */ | |
6628 | ||
6629 | static match | |
6630 | access_attr_decl (gfc_statement st) | |
6631 | { | |
6632 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6633 | interface_type type; | |
6634 | gfc_user_op *uop; | |
c2958b6b | 6635 | gfc_symbol *sym, *dt_sym; |
dcb1b019 | 6636 | gfc_intrinsic_op op; |
4ee9c684 | 6637 | match m; |
6638 | ||
6639 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
6640 | goto done; | |
6641 | ||
6642 | for (;;) | |
6643 | { | |
dcb1b019 | 6644 | m = gfc_match_generic_spec (&type, name, &op); |
4ee9c684 | 6645 | if (m == MATCH_NO) |
6646 | goto syntax; | |
6647 | if (m == MATCH_ERROR) | |
6648 | return MATCH_ERROR; | |
6649 | ||
6650 | switch (type) | |
6651 | { | |
6652 | case INTERFACE_NAMELESS: | |
94fa7146 | 6653 | case INTERFACE_ABSTRACT: |
4ee9c684 | 6654 | goto syntax; |
6655 | ||
6656 | case INTERFACE_GENERIC: | |
6657 | if (gfc_get_symbol (name, NULL, &sym)) | |
6658 | goto done; | |
6659 | ||
1a9745d2 | 6660 | if (gfc_add_access (&sym->attr, (st == ST_PUBLIC) |
6661 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
950683ed | 6662 | sym->name, NULL) == FAILURE) |
4ee9c684 | 6663 | return MATCH_ERROR; |
6664 | ||
c2958b6b | 6665 | if (sym->attr.generic && (dt_sym = gfc_find_dt_in_generic (sym)) |
6666 | && gfc_add_access (&dt_sym->attr, | |
6667 | (st == ST_PUBLIC) ? ACCESS_PUBLIC | |
6668 | : ACCESS_PRIVATE, | |
6669 | sym->name, NULL) == FAILURE) | |
6670 | return MATCH_ERROR; | |
6671 | ||
4ee9c684 | 6672 | break; |
6673 | ||
6674 | case INTERFACE_INTRINSIC_OP: | |
dcb1b019 | 6675 | if (gfc_current_ns->operator_access[op] == ACCESS_UNKNOWN) |
4ee9c684 | 6676 | { |
0c482c1d | 6677 | gfc_intrinsic_op other_op; |
6678 | ||
dcb1b019 | 6679 | gfc_current_ns->operator_access[op] = |
4ee9c684 | 6680 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; |
0c482c1d | 6681 | |
6682 | /* Handle the case if there is another op with the same | |
6683 | function, for INTRINSIC_EQ vs. INTRINSIC_EQ_OS and so on. */ | |
6684 | other_op = gfc_equivalent_op (op); | |
6685 | ||
6686 | if (other_op != INTRINSIC_NONE) | |
6687 | gfc_current_ns->operator_access[other_op] = | |
6688 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
6689 | ||
4ee9c684 | 6690 | } |
6691 | else | |
6692 | { | |
6693 | gfc_error ("Access specification of the %s operator at %C has " | |
dcb1b019 | 6694 | "already been specified", gfc_op2string (op)); |
4ee9c684 | 6695 | goto done; |
6696 | } | |
6697 | ||
6698 | break; | |
6699 | ||
6700 | case INTERFACE_USER_OP: | |
6701 | uop = gfc_get_uop (name); | |
6702 | ||
6703 | if (uop->access == ACCESS_UNKNOWN) | |
6704 | { | |
1a9745d2 | 6705 | uop->access = (st == ST_PUBLIC) |
6706 | ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
4ee9c684 | 6707 | } |
6708 | else | |
6709 | { | |
1a9745d2 | 6710 | gfc_error ("Access specification of the .%s. operator at %C " |
6711 | "has already been specified", sym->name); | |
4ee9c684 | 6712 | goto done; |
6713 | } | |
6714 | ||
6715 | break; | |
6716 | } | |
6717 | ||
6718 | if (gfc_match_char (',') == MATCH_NO) | |
6719 | break; | |
6720 | } | |
6721 | ||
6722 | if (gfc_match_eos () != MATCH_YES) | |
6723 | goto syntax; | |
6724 | return MATCH_YES; | |
6725 | ||
6726 | syntax: | |
6727 | gfc_syntax_error (st); | |
6728 | ||
6729 | done: | |
6730 | return MATCH_ERROR; | |
6731 | } | |
6732 | ||
6733 | ||
3ea52af3 | 6734 | match |
6735 | gfc_match_protected (void) | |
6736 | { | |
6737 | gfc_symbol *sym; | |
6738 | match m; | |
6739 | ||
6740 | if (gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
6741 | { | |
6742 | gfc_error ("PROTECTED at %C only allowed in specification " | |
6743 | "part of a module"); | |
6744 | return MATCH_ERROR; | |
6745 | ||
6746 | } | |
6747 | ||
1a9745d2 | 6748 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: PROTECTED statement at %C") |
3ea52af3 | 6749 | == FAILURE) |
6750 | return MATCH_ERROR; | |
6751 | ||
6752 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
6753 | { | |
6754 | return MATCH_ERROR; | |
6755 | } | |
6756 | ||
6757 | if (gfc_match_eos () == MATCH_YES) | |
6758 | goto syntax; | |
6759 | ||
6760 | for(;;) | |
6761 | { | |
6762 | m = gfc_match_symbol (&sym, 0); | |
6763 | switch (m) | |
6764 | { | |
6765 | case MATCH_YES: | |
1a9745d2 | 6766 | if (gfc_add_protected (&sym->attr, sym->name, &gfc_current_locus) |
6767 | == FAILURE) | |
3ea52af3 | 6768 | return MATCH_ERROR; |
6769 | goto next_item; | |
6770 | ||
6771 | case MATCH_NO: | |
6772 | break; | |
6773 | ||
6774 | case MATCH_ERROR: | |
6775 | return MATCH_ERROR; | |
6776 | } | |
6777 | ||
6778 | next_item: | |
6779 | if (gfc_match_eos () == MATCH_YES) | |
6780 | break; | |
6781 | if (gfc_match_char (',') != MATCH_YES) | |
6782 | goto syntax; | |
6783 | } | |
6784 | ||
6785 | return MATCH_YES; | |
6786 | ||
6787 | syntax: | |
6788 | gfc_error ("Syntax error in PROTECTED statement at %C"); | |
6789 | return MATCH_ERROR; | |
6790 | } | |
6791 | ||
6792 | ||
a0527218 | 6793 | /* The PRIVATE statement is a bit weird in that it can be an attribute |
69b1505f | 6794 | declaration, but also works as a standalone statement inside of a |
4ee9c684 | 6795 | type declaration or a module. */ |
6796 | ||
6797 | match | |
1a9745d2 | 6798 | gfc_match_private (gfc_statement *st) |
4ee9c684 | 6799 | { |
6800 | ||
6801 | if (gfc_match ("private") != MATCH_YES) | |
6802 | return MATCH_NO; | |
6803 | ||
e14bee04 | 6804 | if (gfc_current_state () != COMP_MODULE |
7fd88f6e | 6805 | && !(gfc_current_state () == COMP_DERIVED |
6806 | && gfc_state_stack->previous | |
6807 | && gfc_state_stack->previous->state == COMP_MODULE) | |
6808 | && !(gfc_current_state () == COMP_DERIVED_CONTAINS | |
6809 | && gfc_state_stack->previous && gfc_state_stack->previous->previous | |
6810 | && gfc_state_stack->previous->previous->state == COMP_MODULE)) | |
e14bee04 | 6811 | { |
6812 | gfc_error ("PRIVATE statement at %C is only allowed in the " | |
6813 | "specification part of a module"); | |
6814 | return MATCH_ERROR; | |
6815 | } | |
6816 | ||
4ee9c684 | 6817 | if (gfc_current_state () == COMP_DERIVED) |
6818 | { | |
6819 | if (gfc_match_eos () == MATCH_YES) | |
6820 | { | |
6821 | *st = ST_PRIVATE; | |
6822 | return MATCH_YES; | |
6823 | } | |
6824 | ||
6825 | gfc_syntax_error (ST_PRIVATE); | |
6826 | return MATCH_ERROR; | |
6827 | } | |
6828 | ||
6829 | if (gfc_match_eos () == MATCH_YES) | |
6830 | { | |
6831 | *st = ST_PRIVATE; | |
6832 | return MATCH_YES; | |
6833 | } | |
6834 | ||
6835 | *st = ST_ATTR_DECL; | |
6836 | return access_attr_decl (ST_PRIVATE); | |
6837 | } | |
6838 | ||
6839 | ||
6840 | match | |
1a9745d2 | 6841 | gfc_match_public (gfc_statement *st) |
4ee9c684 | 6842 | { |
6843 | ||
6844 | if (gfc_match ("public") != MATCH_YES) | |
6845 | return MATCH_NO; | |
6846 | ||
e14bee04 | 6847 | if (gfc_current_state () != COMP_MODULE) |
6848 | { | |
6849 | gfc_error ("PUBLIC statement at %C is only allowed in the " | |
6850 | "specification part of a module"); | |
6851 | return MATCH_ERROR; | |
6852 | } | |
6853 | ||
4ee9c684 | 6854 | if (gfc_match_eos () == MATCH_YES) |
6855 | { | |
6856 | *st = ST_PUBLIC; | |
6857 | return MATCH_YES; | |
6858 | } | |
6859 | ||
6860 | *st = ST_ATTR_DECL; | |
6861 | return access_attr_decl (ST_PUBLIC); | |
6862 | } | |
6863 | ||
6864 | ||
6865 | /* Workhorse for gfc_match_parameter. */ | |
6866 | ||
6867 | static match | |
6868 | do_parm (void) | |
6869 | { | |
6870 | gfc_symbol *sym; | |
6871 | gfc_expr *init; | |
6872 | match m; | |
f16404e3 | 6873 | gfc_try t; |
4ee9c684 | 6874 | |
6875 | m = gfc_match_symbol (&sym, 0); | |
6876 | if (m == MATCH_NO) | |
6877 | gfc_error ("Expected variable name at %C in PARAMETER statement"); | |
6878 | ||
6879 | if (m != MATCH_YES) | |
6880 | return m; | |
6881 | ||
6882 | if (gfc_match_char ('=') == MATCH_NO) | |
6883 | { | |
6884 | gfc_error ("Expected = sign in PARAMETER statement at %C"); | |
6885 | return MATCH_ERROR; | |
6886 | } | |
6887 | ||
6888 | m = gfc_match_init_expr (&init); | |
6889 | if (m == MATCH_NO) | |
6890 | gfc_error ("Expected expression at %C in PARAMETER statement"); | |
6891 | if (m != MATCH_YES) | |
6892 | return m; | |
6893 | ||
6894 | if (sym->ts.type == BT_UNKNOWN | |
6895 | && gfc_set_default_type (sym, 1, NULL) == FAILURE) | |
6896 | { | |
6897 | m = MATCH_ERROR; | |
6898 | goto cleanup; | |
6899 | } | |
6900 | ||
6901 | if (gfc_check_assign_symbol (sym, init) == FAILURE | |
950683ed | 6902 | || gfc_add_flavor (&sym->attr, FL_PARAMETER, sym->name, NULL) == FAILURE) |
4ee9c684 | 6903 | { |
6904 | m = MATCH_ERROR; | |
6905 | goto cleanup; | |
6906 | } | |
6907 | ||
13aebeb0 | 6908 | if (sym->value) |
6909 | { | |
6910 | gfc_error ("Initializing already initialized variable at %C"); | |
6911 | m = MATCH_ERROR; | |
6912 | goto cleanup; | |
6913 | } | |
6914 | ||
f16404e3 | 6915 | t = add_init_expr_to_sym (sym->name, &init, &gfc_current_locus); |
6916 | return (t == SUCCESS) ? MATCH_YES : MATCH_ERROR; | |
4ee9c684 | 6917 | |
6918 | cleanup: | |
6919 | gfc_free_expr (init); | |
6920 | return m; | |
6921 | } | |
6922 | ||
6923 | ||
6924 | /* Match a parameter statement, with the weird syntax that these have. */ | |
6925 | ||
6926 | match | |
6927 | gfc_match_parameter (void) | |
6928 | { | |
6929 | match m; | |
6930 | ||
6931 | if (gfc_match_char ('(') == MATCH_NO) | |
6932 | return MATCH_NO; | |
6933 | ||
6934 | for (;;) | |
6935 | { | |
6936 | m = do_parm (); | |
6937 | if (m != MATCH_YES) | |
6938 | break; | |
6939 | ||
6940 | if (gfc_match (" )%t") == MATCH_YES) | |
6941 | break; | |
6942 | ||
6943 | if (gfc_match_char (',') != MATCH_YES) | |
6944 | { | |
6945 | gfc_error ("Unexpected characters in PARAMETER statement at %C"); | |
6946 | m = MATCH_ERROR; | |
6947 | break; | |
6948 | } | |
6949 | } | |
6950 | ||
6951 | return m; | |
6952 | } | |
6953 | ||
6954 | ||
6955 | /* Save statements have a special syntax. */ | |
6956 | ||
6957 | match | |
6958 | gfc_match_save (void) | |
6959 | { | |
82f5ee13 | 6960 | char n[GFC_MAX_SYMBOL_LEN+1]; |
6961 | gfc_common_head *c; | |
4ee9c684 | 6962 | gfc_symbol *sym; |
6963 | match m; | |
6964 | ||
6965 | if (gfc_match_eos () == MATCH_YES) | |
6966 | { | |
6967 | if (gfc_current_ns->seen_save) | |
6968 | { | |
1a9745d2 | 6969 | if (gfc_notify_std (GFC_STD_LEGACY, "Blanket SAVE statement at %C " |
6970 | "follows previous SAVE statement") | |
76e82f95 | 6971 | == FAILURE) |
6972 | return MATCH_ERROR; | |
4ee9c684 | 6973 | } |
6974 | ||
6975 | gfc_current_ns->save_all = gfc_current_ns->seen_save = 1; | |
6976 | return MATCH_YES; | |
6977 | } | |
6978 | ||
6979 | if (gfc_current_ns->save_all) | |
6980 | { | |
1a9745d2 | 6981 | if (gfc_notify_std (GFC_STD_LEGACY, "SAVE statement at %C follows " |
6982 | "blanket SAVE statement") | |
76e82f95 | 6983 | == FAILURE) |
6984 | return MATCH_ERROR; | |
4ee9c684 | 6985 | } |
6986 | ||
6987 | gfc_match (" ::"); | |
6988 | ||
6989 | for (;;) | |
6990 | { | |
6991 | m = gfc_match_symbol (&sym, 0); | |
6992 | switch (m) | |
6993 | { | |
6994 | case MATCH_YES: | |
23d075f4 | 6995 | if (gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, |
6996 | &gfc_current_locus) == FAILURE) | |
4ee9c684 | 6997 | return MATCH_ERROR; |
6998 | goto next_item; | |
6999 | ||
7000 | case MATCH_NO: | |
7001 | break; | |
7002 | ||
7003 | case MATCH_ERROR: | |
7004 | return MATCH_ERROR; | |
7005 | } | |
7006 | ||
82f5ee13 | 7007 | m = gfc_match (" / %n /", &n); |
4ee9c684 | 7008 | if (m == MATCH_ERROR) |
7009 | return MATCH_ERROR; | |
7010 | if (m == MATCH_NO) | |
7011 | goto syntax; | |
7012 | ||
403ddc45 | 7013 | c = gfc_get_common (n, 0); |
82f5ee13 | 7014 | c->saved = 1; |
7015 | ||
4ee9c684 | 7016 | gfc_current_ns->seen_save = 1; |
7017 | ||
7018 | next_item: | |
7019 | if (gfc_match_eos () == MATCH_YES) | |
7020 | break; | |
7021 | if (gfc_match_char (',') != MATCH_YES) | |
7022 | goto syntax; | |
7023 | } | |
7024 | ||
7025 | return MATCH_YES; | |
7026 | ||
7027 | syntax: | |
7028 | gfc_error ("Syntax error in SAVE statement at %C"); | |
7029 | return MATCH_ERROR; | |
7030 | } | |
7031 | ||
7032 | ||
8f6339b6 | 7033 | match |
7034 | gfc_match_value (void) | |
7035 | { | |
7036 | gfc_symbol *sym; | |
7037 | match m; | |
7038 | ||
6a7084d7 | 7039 | /* This is not allowed within a BLOCK construct! */ |
7040 | if (gfc_current_state () == COMP_BLOCK) | |
7041 | { | |
7042 | gfc_error ("VALUE is not allowed inside of BLOCK at %C"); | |
7043 | return MATCH_ERROR; | |
7044 | } | |
7045 | ||
1a9745d2 | 7046 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: VALUE statement at %C") |
8f6339b6 | 7047 | == FAILURE) |
7048 | return MATCH_ERROR; | |
7049 | ||
7050 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7051 | { | |
7052 | return MATCH_ERROR; | |
7053 | } | |
7054 | ||
7055 | if (gfc_match_eos () == MATCH_YES) | |
7056 | goto syntax; | |
7057 | ||
7058 | for(;;) | |
7059 | { | |
7060 | m = gfc_match_symbol (&sym, 0); | |
7061 | switch (m) | |
7062 | { | |
7063 | case MATCH_YES: | |
1a9745d2 | 7064 | if (gfc_add_value (&sym->attr, sym->name, &gfc_current_locus) |
7065 | == FAILURE) | |
8f6339b6 | 7066 | return MATCH_ERROR; |
7067 | goto next_item; | |
7068 | ||
7069 | case MATCH_NO: | |
7070 | break; | |
7071 | ||
7072 | case MATCH_ERROR: | |
7073 | return MATCH_ERROR; | |
7074 | } | |
7075 | ||
7076 | next_item: | |
7077 | if (gfc_match_eos () == MATCH_YES) | |
7078 | break; | |
7079 | if (gfc_match_char (',') != MATCH_YES) | |
7080 | goto syntax; | |
7081 | } | |
7082 | ||
7083 | return MATCH_YES; | |
7084 | ||
7085 | syntax: | |
7086 | gfc_error ("Syntax error in VALUE statement at %C"); | |
7087 | return MATCH_ERROR; | |
7088 | } | |
7089 | ||
f6d0e37a | 7090 | |
ef814c81 | 7091 | match |
7092 | gfc_match_volatile (void) | |
7093 | { | |
7094 | gfc_symbol *sym; | |
7095 | match m; | |
7096 | ||
1a9745d2 | 7097 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: VOLATILE statement at %C") |
ef814c81 | 7098 | == FAILURE) |
7099 | return MATCH_ERROR; | |
7100 | ||
7101 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7102 | { | |
7103 | return MATCH_ERROR; | |
7104 | } | |
7105 | ||
7106 | if (gfc_match_eos () == MATCH_YES) | |
7107 | goto syntax; | |
7108 | ||
7109 | for(;;) | |
7110 | { | |
2f241857 | 7111 | /* VOLATILE is special because it can be added to host-associated |
aff518b0 | 7112 | symbols locally. Except for coarrays. */ |
2f241857 | 7113 | m = gfc_match_symbol (&sym, 1); |
ef814c81 | 7114 | switch (m) |
7115 | { | |
7116 | case MATCH_YES: | |
aff518b0 | 7117 | /* F2008, C560+C561. VOLATILE for host-/use-associated variable or |
7118 | for variable in a BLOCK which is defined outside of the BLOCK. */ | |
7119 | if (sym->ns != gfc_current_ns && sym->attr.codimension) | |
7120 | { | |
7121 | gfc_error ("Specifying VOLATILE for coarray variable '%s' at " | |
7122 | "%C, which is use-/host-associated", sym->name); | |
7123 | return MATCH_ERROR; | |
7124 | } | |
1a9745d2 | 7125 | if (gfc_add_volatile (&sym->attr, sym->name, &gfc_current_locus) |
7126 | == FAILURE) | |
ef814c81 | 7127 | return MATCH_ERROR; |
7128 | goto next_item; | |
7129 | ||
7130 | case MATCH_NO: | |
7131 | break; | |
7132 | ||
7133 | case MATCH_ERROR: | |
7134 | return MATCH_ERROR; | |
7135 | } | |
7136 | ||
7137 | next_item: | |
7138 | if (gfc_match_eos () == MATCH_YES) | |
7139 | break; | |
7140 | if (gfc_match_char (',') != MATCH_YES) | |
7141 | goto syntax; | |
7142 | } | |
7143 | ||
7144 | return MATCH_YES; | |
7145 | ||
7146 | syntax: | |
7147 | gfc_error ("Syntax error in VOLATILE statement at %C"); | |
7148 | return MATCH_ERROR; | |
7149 | } | |
7150 | ||
7151 | ||
738928be | 7152 | match |
7153 | gfc_match_asynchronous (void) | |
7154 | { | |
7155 | gfc_symbol *sym; | |
7156 | match m; | |
7157 | ||
7158 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: ASYNCHRONOUS statement at %C") | |
7159 | == FAILURE) | |
7160 | return MATCH_ERROR; | |
7161 | ||
7162 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7163 | { | |
7164 | return MATCH_ERROR; | |
7165 | } | |
7166 | ||
7167 | if (gfc_match_eos () == MATCH_YES) | |
7168 | goto syntax; | |
7169 | ||
7170 | for(;;) | |
7171 | { | |
7172 | /* ASYNCHRONOUS is special because it can be added to host-associated | |
7173 | symbols locally. */ | |
7174 | m = gfc_match_symbol (&sym, 1); | |
7175 | switch (m) | |
7176 | { | |
7177 | case MATCH_YES: | |
7178 | if (gfc_add_asynchronous (&sym->attr, sym->name, &gfc_current_locus) | |
7179 | == FAILURE) | |
7180 | return MATCH_ERROR; | |
7181 | goto next_item; | |
7182 | ||
7183 | case MATCH_NO: | |
7184 | break; | |
7185 | ||
7186 | case MATCH_ERROR: | |
7187 | return MATCH_ERROR; | |
7188 | } | |
7189 | ||
7190 | next_item: | |
7191 | if (gfc_match_eos () == MATCH_YES) | |
7192 | break; | |
7193 | if (gfc_match_char (',') != MATCH_YES) | |
7194 | goto syntax; | |
7195 | } | |
7196 | ||
7197 | return MATCH_YES; | |
7198 | ||
7199 | syntax: | |
7200 | gfc_error ("Syntax error in ASYNCHRONOUS statement at %C"); | |
7201 | return MATCH_ERROR; | |
7202 | } | |
7203 | ||
7204 | ||
4ee9c684 | 7205 | /* Match a module procedure statement. Note that we have to modify |
7206 | symbols in the parent's namespace because the current one was there | |
89d91d02 | 7207 | to receive symbols that are in an interface's formal argument list. */ |
4ee9c684 | 7208 | |
7209 | match | |
7210 | gfc_match_modproc (void) | |
7211 | { | |
7212 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7213 | gfc_symbol *sym; | |
7214 | match m; | |
d920fb76 | 7215 | locus old_locus; |
63d42079 | 7216 | gfc_namespace *module_ns; |
94ce9f74 | 7217 | gfc_interface *old_interface_head, *interface; |
4ee9c684 | 7218 | |
7219 | if (gfc_state_stack->state != COMP_INTERFACE | |
7220 | || gfc_state_stack->previous == NULL | |
5cf92482 | 7221 | || current_interface.type == INTERFACE_NAMELESS |
7222 | || current_interface.type == INTERFACE_ABSTRACT) | |
4ee9c684 | 7223 | { |
1a9745d2 | 7224 | gfc_error ("MODULE PROCEDURE at %C must be in a generic module " |
7225 | "interface"); | |
4ee9c684 | 7226 | return MATCH_ERROR; |
7227 | } | |
7228 | ||
63d42079 | 7229 | module_ns = gfc_current_ns->parent; |
7230 | for (; module_ns; module_ns = module_ns->parent) | |
15ca3865 | 7231 | if (module_ns->proc_name->attr.flavor == FL_MODULE |
7232 | || module_ns->proc_name->attr.flavor == FL_PROGRAM | |
7233 | || (module_ns->proc_name->attr.flavor == FL_PROCEDURE | |
7234 | && !module_ns->proc_name->attr.contained)) | |
63d42079 | 7235 | break; |
7236 | ||
7237 | if (module_ns == NULL) | |
7238 | return MATCH_ERROR; | |
7239 | ||
94ce9f74 | 7240 | /* Store the current state of the interface. We will need it if we |
7241 | end up with a syntax error and need to recover. */ | |
7242 | old_interface_head = gfc_current_interface_head (); | |
7243 | ||
d920fb76 | 7244 | /* Check if the F2008 optional double colon appears. */ |
7245 | gfc_gobble_whitespace (); | |
7246 | old_locus = gfc_current_locus; | |
7247 | if (gfc_match ("::") == MATCH_YES) | |
7248 | { | |
7249 | if (gfc_notify_std (GFC_STD_F2008, "Fortran 2008: double colon in " | |
7250 | "MODULE PROCEDURE statement at %L", &old_locus) | |
7251 | == FAILURE) | |
7252 | return MATCH_ERROR; | |
7253 | } | |
7254 | else | |
7255 | gfc_current_locus = old_locus; | |
7256 | ||
4ee9c684 | 7257 | for (;;) |
7258 | { | |
94ce9f74 | 7259 | bool last = false; |
d920fb76 | 7260 | old_locus = gfc_current_locus; |
94ce9f74 | 7261 | |
4ee9c684 | 7262 | m = gfc_match_name (name); |
7263 | if (m == MATCH_NO) | |
7264 | goto syntax; | |
7265 | if (m != MATCH_YES) | |
7266 | return MATCH_ERROR; | |
7267 | ||
94ce9f74 | 7268 | /* Check for syntax error before starting to add symbols to the |
7269 | current namespace. */ | |
7270 | if (gfc_match_eos () == MATCH_YES) | |
7271 | last = true; | |
d920fb76 | 7272 | |
94ce9f74 | 7273 | if (!last && gfc_match_char (',') != MATCH_YES) |
7274 | goto syntax; | |
7275 | ||
7276 | /* Now we're sure the syntax is valid, we process this item | |
7277 | further. */ | |
63d42079 | 7278 | if (gfc_get_symbol (name, module_ns, &sym)) |
4ee9c684 | 7279 | return MATCH_ERROR; |
7280 | ||
15ca3865 | 7281 | if (sym->attr.intrinsic) |
7282 | { | |
7283 | gfc_error ("Intrinsic procedure at %L cannot be a MODULE " | |
7284 | "PROCEDURE", &old_locus); | |
7285 | return MATCH_ERROR; | |
7286 | } | |
7287 | ||
4ee9c684 | 7288 | if (sym->attr.proc != PROC_MODULE |
950683ed | 7289 | && gfc_add_procedure (&sym->attr, PROC_MODULE, |
7290 | sym->name, NULL) == FAILURE) | |
4ee9c684 | 7291 | return MATCH_ERROR; |
7292 | ||
7293 | if (gfc_add_interface (sym) == FAILURE) | |
7294 | return MATCH_ERROR; | |
7295 | ||
3186f695 | 7296 | sym->attr.mod_proc = 1; |
15ca3865 | 7297 | sym->declared_at = old_locus; |
3186f695 | 7298 | |
94ce9f74 | 7299 | if (last) |
4ee9c684 | 7300 | break; |
4ee9c684 | 7301 | } |
7302 | ||
7303 | return MATCH_YES; | |
7304 | ||
7305 | syntax: | |
94ce9f74 | 7306 | /* Restore the previous state of the interface. */ |
7307 | interface = gfc_current_interface_head (); | |
7308 | gfc_set_current_interface_head (old_interface_head); | |
7309 | ||
7310 | /* Free the new interfaces. */ | |
7311 | while (interface != old_interface_head) | |
7312 | { | |
7313 | gfc_interface *i = interface->next; | |
434f0922 | 7314 | free (interface); |
94ce9f74 | 7315 | interface = i; |
7316 | } | |
7317 | ||
7318 | /* And issue a syntax error. */ | |
4ee9c684 | 7319 | gfc_syntax_error (ST_MODULE_PROC); |
7320 | return MATCH_ERROR; | |
7321 | } | |
7322 | ||
7323 | ||
ea94d76d | 7324 | /* Check a derived type that is being extended. */ |
7325 | static gfc_symbol* | |
7326 | check_extended_derived_type (char *name) | |
7327 | { | |
7328 | gfc_symbol *extended; | |
7329 | ||
7330 | if (gfc_find_symbol (name, gfc_current_ns, 1, &extended)) | |
7331 | { | |
7332 | gfc_error ("Ambiguous symbol in TYPE definition at %C"); | |
7333 | return NULL; | |
7334 | } | |
7335 | ||
7336 | if (!extended) | |
7337 | { | |
7338 | gfc_error ("No such symbol in TYPE definition at %C"); | |
7339 | return NULL; | |
7340 | } | |
7341 | ||
c2958b6b | 7342 | extended = gfc_find_dt_in_generic (extended); |
7343 | ||
ea94d76d | 7344 | if (extended->attr.flavor != FL_DERIVED) |
7345 | { | |
7346 | gfc_error ("'%s' in EXTENDS expression at %C is not a " | |
7347 | "derived type", name); | |
7348 | return NULL; | |
7349 | } | |
7350 | ||
7351 | if (extended->attr.is_bind_c) | |
7352 | { | |
7353 | gfc_error ("'%s' cannot be extended at %C because it " | |
7354 | "is BIND(C)", extended->name); | |
7355 | return NULL; | |
7356 | } | |
7357 | ||
7358 | if (extended->attr.sequence) | |
7359 | { | |
7360 | gfc_error ("'%s' cannot be extended at %C because it " | |
7361 | "is a SEQUENCE type", extended->name); | |
7362 | return NULL; | |
7363 | } | |
7364 | ||
7365 | return extended; | |
7366 | } | |
7367 | ||
7368 | ||
c5d33754 | 7369 | /* Match the optional attribute specifiers for a type declaration. |
7370 | Return MATCH_ERROR if an error is encountered in one of the handled | |
7371 | attributes (public, private, bind(c)), MATCH_NO if what's found is | |
7372 | not a handled attribute, and MATCH_YES otherwise. TODO: More error | |
7373 | checking on attribute conflicts needs to be done. */ | |
4ee9c684 | 7374 | |
7375 | match | |
ea94d76d | 7376 | gfc_get_type_attr_spec (symbol_attribute *attr, char *name) |
4ee9c684 | 7377 | { |
c5d33754 | 7378 | /* See if the derived type is marked as private. */ |
4ee9c684 | 7379 | if (gfc_match (" , private") == MATCH_YES) |
7380 | { | |
e14bee04 | 7381 | if (gfc_current_state () != COMP_MODULE) |
4ee9c684 | 7382 | { |
e14bee04 | 7383 | gfc_error ("Derived type at %C can only be PRIVATE in the " |
7384 | "specification part of a module"); | |
4ee9c684 | 7385 | return MATCH_ERROR; |
7386 | } | |
7387 | ||
c5d33754 | 7388 | if (gfc_add_access (attr, ACCESS_PRIVATE, NULL, NULL) == FAILURE) |
4ee9c684 | 7389 | return MATCH_ERROR; |
4ee9c684 | 7390 | } |
c5d33754 | 7391 | else if (gfc_match (" , public") == MATCH_YES) |
4ee9c684 | 7392 | { |
e14bee04 | 7393 | if (gfc_current_state () != COMP_MODULE) |
4ee9c684 | 7394 | { |
e14bee04 | 7395 | gfc_error ("Derived type at %C can only be PUBLIC in the " |
7396 | "specification part of a module"); | |
4ee9c684 | 7397 | return MATCH_ERROR; |
7398 | } | |
7399 | ||
c5d33754 | 7400 | if (gfc_add_access (attr, ACCESS_PUBLIC, NULL, NULL) == FAILURE) |
4ee9c684 | 7401 | return MATCH_ERROR; |
4ee9c684 | 7402 | } |
ac5f2650 | 7403 | else if (gfc_match (" , bind ( c )") == MATCH_YES) |
c5d33754 | 7404 | { |
7405 | /* If the type is defined to be bind(c) it then needs to make | |
7406 | sure that all fields are interoperable. This will | |
7407 | need to be a semantic check on the finished derived type. | |
7408 | See 15.2.3 (lines 9-12) of F2003 draft. */ | |
7409 | if (gfc_add_is_bind_c (attr, NULL, &gfc_current_locus, 0) != SUCCESS) | |
7410 | return MATCH_ERROR; | |
7411 | ||
7412 | /* TODO: attr conflicts need to be checked, probably in symbol.c. */ | |
7413 | } | |
ac5f2650 | 7414 | else if (gfc_match (" , abstract") == MATCH_YES) |
7415 | { | |
7416 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: ABSTRACT type at %C") | |
7417 | == FAILURE) | |
7418 | return MATCH_ERROR; | |
7419 | ||
7420 | if (gfc_add_abstract (attr, &gfc_current_locus) == FAILURE) | |
7421 | return MATCH_ERROR; | |
7422 | } | |
ea94d76d | 7423 | else if (name && gfc_match(" , extends ( %n )", name) == MATCH_YES) |
7424 | { | |
e485ad6b | 7425 | if (gfc_add_extension (attr, &gfc_current_locus) == FAILURE) |
ea94d76d | 7426 | return MATCH_ERROR; |
7427 | } | |
c5d33754 | 7428 | else |
7429 | return MATCH_NO; | |
7430 | ||
7431 | /* If we get here, something matched. */ | |
7432 | return MATCH_YES; | |
7433 | } | |
7434 | ||
7435 | ||
7436 | /* Match the beginning of a derived type declaration. If a type name | |
7437 | was the result of a function, then it is possible to have a symbol | |
7438 | already to be known as a derived type yet have no components. */ | |
7439 | ||
7440 | match | |
7441 | gfc_match_derived_decl (void) | |
7442 | { | |
7443 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
ea94d76d | 7444 | char parent[GFC_MAX_SYMBOL_LEN + 1]; |
c5d33754 | 7445 | symbol_attribute attr; |
c2958b6b | 7446 | gfc_symbol *sym, *gensym; |
ea94d76d | 7447 | gfc_symbol *extended; |
c5d33754 | 7448 | match m; |
7449 | match is_type_attr_spec = MATCH_NO; | |
33e86520 | 7450 | bool seen_attr = false; |
c2958b6b | 7451 | gfc_interface *intr = NULL, *head; |
c5d33754 | 7452 | |
7453 | if (gfc_current_state () == COMP_DERIVED) | |
7454 | return MATCH_NO; | |
7455 | ||
ea94d76d | 7456 | name[0] = '\0'; |
7457 | parent[0] = '\0'; | |
c5d33754 | 7458 | gfc_clear_attr (&attr); |
ea94d76d | 7459 | extended = NULL; |
c5d33754 | 7460 | |
7461 | do | |
7462 | { | |
ea94d76d | 7463 | is_type_attr_spec = gfc_get_type_attr_spec (&attr, parent); |
c5d33754 | 7464 | if (is_type_attr_spec == MATCH_ERROR) |
7465 | return MATCH_ERROR; | |
33e86520 | 7466 | if (is_type_attr_spec == MATCH_YES) |
7467 | seen_attr = true; | |
c5d33754 | 7468 | } while (is_type_attr_spec == MATCH_YES); |
4ee9c684 | 7469 | |
e485ad6b | 7470 | /* Deal with derived type extensions. The extension attribute has |
7471 | been added to 'attr' but now the parent type must be found and | |
7472 | checked. */ | |
ea94d76d | 7473 | if (parent[0]) |
7474 | extended = check_extended_derived_type (parent); | |
7475 | ||
7476 | if (parent[0] && !extended) | |
7477 | return MATCH_ERROR; | |
7478 | ||
33e86520 | 7479 | if (gfc_match (" ::") != MATCH_YES && seen_attr) |
4ee9c684 | 7480 | { |
7481 | gfc_error ("Expected :: in TYPE definition at %C"); | |
7482 | return MATCH_ERROR; | |
7483 | } | |
7484 | ||
7485 | m = gfc_match (" %n%t", name); | |
7486 | if (m != MATCH_YES) | |
7487 | return m; | |
7488 | ||
a3055431 | 7489 | /* Make sure the name is not the name of an intrinsic type. */ |
7490 | if (gfc_is_intrinsic_typename (name)) | |
4ee9c684 | 7491 | { |
1a9745d2 | 7492 | gfc_error ("Type name '%s' at %C cannot be the same as an intrinsic " |
7493 | "type", name); | |
4ee9c684 | 7494 | return MATCH_ERROR; |
7495 | } | |
7496 | ||
c2958b6b | 7497 | if (gfc_get_symbol (name, NULL, &gensym)) |
4ee9c684 | 7498 | return MATCH_ERROR; |
7499 | ||
c2958b6b | 7500 | if (!gensym->attr.generic && gensym->ts.type != BT_UNKNOWN) |
4ee9c684 | 7501 | { |
7502 | gfc_error ("Derived type name '%s' at %C already has a basic type " | |
c2958b6b | 7503 | "of %s", gensym->name, gfc_typename (&gensym->ts)); |
7504 | return MATCH_ERROR; | |
7505 | } | |
7506 | ||
7507 | if (!gensym->attr.generic | |
7508 | && gfc_add_generic (&gensym->attr, gensym->name, NULL) == FAILURE) | |
7509 | return MATCH_ERROR; | |
7510 | ||
7511 | if (!gensym->attr.function | |
7512 | && gfc_add_function (&gensym->attr, gensym->name, NULL) == FAILURE) | |
7513 | return MATCH_ERROR; | |
7514 | ||
7515 | sym = gfc_find_dt_in_generic (gensym); | |
7516 | ||
7517 | if (sym && (sym->components != NULL || sym->attr.zero_comp)) | |
7518 | { | |
7519 | gfc_error ("Derived type definition of '%s' at %C has already been " | |
7520 | "defined", sym->name); | |
4ee9c684 | 7521 | return MATCH_ERROR; |
7522 | } | |
7523 | ||
c2958b6b | 7524 | if (!sym) |
7525 | { | |
7526 | /* Use upper case to save the actual derived-type symbol. */ | |
7527 | gfc_get_symbol (gfc_get_string ("%c%s", | |
7528 | (char) TOUPPER ((unsigned char) gensym->name[0]), | |
7529 | &gensym->name[1]), NULL, &sym); | |
7530 | sym->name = gfc_get_string (gensym->name); | |
7531 | head = gensym->generic; | |
7532 | intr = gfc_get_interface (); | |
7533 | intr->sym = sym; | |
7534 | intr->where = gfc_current_locus; | |
7535 | intr->sym->declared_at = gfc_current_locus; | |
7536 | intr->next = head; | |
7537 | gensym->generic = intr; | |
7538 | gensym->attr.if_source = IFSRC_DECL; | |
7539 | } | |
7540 | ||
4ee9c684 | 7541 | /* The symbol may already have the derived attribute without the |
7542 | components. The ways this can happen is via a function | |
7543 | definition, an INTRINSIC statement or a subtype in another | |
7544 | derived type that is a pointer. The first part of the AND clause | |
69b1505f | 7545 | is true if the symbol is not the return value of a function. */ |
4ee9c684 | 7546 | if (sym->attr.flavor != FL_DERIVED |
950683ed | 7547 | && gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL) == FAILURE) |
4ee9c684 | 7548 | return MATCH_ERROR; |
7549 | ||
4ee9c684 | 7550 | if (attr.access != ACCESS_UNKNOWN |
950683ed | 7551 | && gfc_add_access (&sym->attr, attr.access, sym->name, NULL) == FAILURE) |
4ee9c684 | 7552 | return MATCH_ERROR; |
c2958b6b | 7553 | else if (sym->attr.access == ACCESS_UNKNOWN |
7554 | && gensym->attr.access != ACCESS_UNKNOWN | |
7555 | && gfc_add_access (&sym->attr, gensym->attr.access, sym->name, NULL) | |
7556 | == FAILURE) | |
7557 | return MATCH_ERROR; | |
7558 | ||
7559 | if (sym->attr.access != ACCESS_UNKNOWN | |
7560 | && gensym->attr.access == ACCESS_UNKNOWN) | |
7561 | gensym->attr.access = sym->attr.access; | |
4ee9c684 | 7562 | |
c5d33754 | 7563 | /* See if the derived type was labeled as bind(c). */ |
7564 | if (attr.is_bind_c != 0) | |
7565 | sym->attr.is_bind_c = attr.is_bind_c; | |
7566 | ||
223f0f57 | 7567 | /* Construct the f2k_derived namespace if it is not yet there. */ |
7568 | if (!sym->f2k_derived) | |
7569 | sym->f2k_derived = gfc_get_namespace (NULL, 0); | |
ea94d76d | 7570 | |
7571 | if (extended && !sym->components) | |
7572 | { | |
7573 | gfc_component *p; | |
7574 | gfc_symtree *st; | |
7575 | ||
7576 | /* Add the extended derived type as the first component. */ | |
7577 | gfc_add_component (sym, parent, &p); | |
ea94d76d | 7578 | extended->refs++; |
7579 | gfc_set_sym_referenced (extended); | |
7580 | ||
7581 | p->ts.type = BT_DERIVED; | |
eeebe20b | 7582 | p->ts.u.derived = extended; |
ea94d76d | 7583 | p->initializer = gfc_default_initializer (&p->ts); |
bdfbc762 | 7584 | |
7585 | /* Set extension level. */ | |
7586 | if (extended->attr.extension == 255) | |
7587 | { | |
7588 | /* Since the extension field is 8 bit wide, we can only have | |
7589 | up to 255 extension levels. */ | |
7590 | gfc_error ("Maximum extension level reached with type '%s' at %L", | |
7591 | extended->name, &extended->declared_at); | |
7592 | return MATCH_ERROR; | |
7593 | } | |
7594 | sym->attr.extension = extended->attr.extension + 1; | |
ea94d76d | 7595 | |
7596 | /* Provide the links between the extended type and its extension. */ | |
7597 | if (!extended->f2k_derived) | |
7598 | extended->f2k_derived = gfc_get_namespace (NULL, 0); | |
7599 | st = gfc_new_symtree (&extended->f2k_derived->sym_root, sym->name); | |
7600 | st->n.sym = sym; | |
7601 | } | |
7602 | ||
bdfbc762 | 7603 | if (!sym->hash_value) |
7604 | /* Set the hash for the compound name for this type. */ | |
a656e7c2 | 7605 | sym->hash_value = gfc_hash_value (sym); |
1de1b1a9 | 7606 | |
ac5f2650 | 7607 | /* Take over the ABSTRACT attribute. */ |
7608 | sym->attr.abstract = attr.abstract; | |
7609 | ||
4ee9c684 | 7610 | gfc_new_block = sym; |
7611 | ||
7612 | return MATCH_YES; | |
7613 | } | |
b549d2a5 | 7614 | |
7615 | ||
7616 | /* Cray Pointees can be declared as: | |
452695a8 | 7617 | pointer (ipt, a (n,m,...,*)) */ |
b549d2a5 | 7618 | |
8458f4ca | 7619 | match |
b549d2a5 | 7620 | gfc_mod_pointee_as (gfc_array_spec *as) |
7621 | { | |
7622 | as->cray_pointee = true; /* This will be useful to know later. */ | |
7623 | if (as->type == AS_ASSUMED_SIZE) | |
452695a8 | 7624 | as->cp_was_assumed = true; |
b549d2a5 | 7625 | else if (as->type == AS_ASSUMED_SHAPE) |
7626 | { | |
7627 | gfc_error ("Cray Pointee at %C cannot be assumed shape array"); | |
7628 | return MATCH_ERROR; | |
7629 | } | |
7630 | return MATCH_YES; | |
7631 | } | |
3b6a4b41 | 7632 | |
7633 | ||
7634 | /* Match the enum definition statement, here we are trying to match | |
7635 | the first line of enum definition statement. | |
7636 | Returns MATCH_YES if match is found. */ | |
7637 | ||
7638 | match | |
7639 | gfc_match_enum (void) | |
7640 | { | |
7641 | match m; | |
7642 | ||
7643 | m = gfc_match_eos (); | |
7644 | if (m != MATCH_YES) | |
7645 | return m; | |
7646 | ||
60fbbf9e | 7647 | if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: ENUM and ENUMERATOR at %C") |
3b6a4b41 | 7648 | == FAILURE) |
7649 | return MATCH_ERROR; | |
7650 | ||
7651 | return MATCH_YES; | |
7652 | } | |
7653 | ||
7654 | ||
fe1328da | 7655 | /* Returns an initializer whose value is one higher than the value of the |
7656 | LAST_INITIALIZER argument. If the argument is NULL, the | |
7657 | initializers value will be set to zero. The initializer's kind | |
7658 | will be set to gfc_c_int_kind. | |
7659 | ||
7660 | If -fshort-enums is given, the appropriate kind will be selected | |
7661 | later after all enumerators have been parsed. A warning is issued | |
7662 | here if an initializer exceeds gfc_c_int_kind. */ | |
7663 | ||
7664 | static gfc_expr * | |
7665 | enum_initializer (gfc_expr *last_initializer, locus where) | |
7666 | { | |
7667 | gfc_expr *result; | |
126387b5 | 7668 | result = gfc_get_constant_expr (BT_INTEGER, gfc_c_int_kind, &where); |
fe1328da | 7669 | |
7670 | mpz_init (result->value.integer); | |
7671 | ||
7672 | if (last_initializer != NULL) | |
7673 | { | |
7674 | mpz_add_ui (result->value.integer, last_initializer->value.integer, 1); | |
7675 | result->where = last_initializer->where; | |
7676 | ||
7677 | if (gfc_check_integer_range (result->value.integer, | |
7678 | gfc_c_int_kind) != ARITH_OK) | |
7679 | { | |
7680 | gfc_error ("Enumerator exceeds the C integer type at %C"); | |
7681 | return NULL; | |
7682 | } | |
7683 | } | |
7684 | else | |
7685 | { | |
7686 | /* Control comes here, if it's the very first enumerator and no | |
7687 | initializer has been given. It will be initialized to zero. */ | |
7688 | mpz_set_si (result->value.integer, 0); | |
7689 | } | |
7690 | ||
7691 | return result; | |
7692 | } | |
7693 | ||
7694 | ||
60fbbf9e | 7695 | /* Match a variable name with an optional initializer. When this |
7696 | subroutine is called, a variable is expected to be parsed next. | |
7697 | Depending on what is happening at the moment, updates either the | |
7698 | symbol table or the current interface. */ | |
7699 | ||
7700 | static match | |
7701 | enumerator_decl (void) | |
7702 | { | |
7703 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7704 | gfc_expr *initializer; | |
7705 | gfc_array_spec *as = NULL; | |
7706 | gfc_symbol *sym; | |
7707 | locus var_locus; | |
7708 | match m; | |
f6bb8f4b | 7709 | gfc_try t; |
60fbbf9e | 7710 | locus old_locus; |
7711 | ||
7712 | initializer = NULL; | |
7713 | old_locus = gfc_current_locus; | |
7714 | ||
7715 | /* When we get here, we've just matched a list of attributes and | |
7716 | maybe a type and a double colon. The next thing we expect to see | |
7717 | is the name of the symbol. */ | |
7718 | m = gfc_match_name (name); | |
7719 | if (m != MATCH_YES) | |
7720 | goto cleanup; | |
7721 | ||
7722 | var_locus = gfc_current_locus; | |
7723 | ||
7724 | /* OK, we've successfully matched the declaration. Now put the | |
7725 | symbol in the current namespace. If we fail to create the symbol, | |
7726 | bail out. */ | |
3e715c81 | 7727 | if (build_sym (name, NULL, false, &as, &var_locus) == FAILURE) |
60fbbf9e | 7728 | { |
7729 | m = MATCH_ERROR; | |
7730 | goto cleanup; | |
7731 | } | |
7732 | ||
7733 | /* The double colon must be present in order to have initializers. | |
7734 | Otherwise the statement is ambiguous with an assignment statement. */ | |
7735 | if (colon_seen) | |
7736 | { | |
7737 | if (gfc_match_char ('=') == MATCH_YES) | |
7738 | { | |
7739 | m = gfc_match_init_expr (&initializer); | |
7740 | if (m == MATCH_NO) | |
7741 | { | |
7742 | gfc_error ("Expected an initialization expression at %C"); | |
7743 | m = MATCH_ERROR; | |
7744 | } | |
7745 | ||
7746 | if (m != MATCH_YES) | |
7747 | goto cleanup; | |
7748 | } | |
7749 | } | |
7750 | ||
7751 | /* If we do not have an initializer, the initialization value of the | |
7752 | previous enumerator (stored in last_initializer) is incremented | |
7753 | by 1 and is used to initialize the current enumerator. */ | |
7754 | if (initializer == NULL) | |
fe1328da | 7755 | initializer = enum_initializer (last_initializer, old_locus); |
e14bee04 | 7756 | |
60fbbf9e | 7757 | if (initializer == NULL || initializer->ts.type != BT_INTEGER) |
7758 | { | |
a8beb4f8 | 7759 | gfc_error ("ENUMERATOR %L not initialized with integer expression", |
7760 | &var_locus); | |
e14bee04 | 7761 | m = MATCH_ERROR; |
60fbbf9e | 7762 | goto cleanup; |
7763 | } | |
7764 | ||
7765 | /* Store this current initializer, for the next enumerator variable | |
7766 | to be parsed. add_init_expr_to_sym() zeros initializer, so we | |
7767 | use last_initializer below. */ | |
7768 | last_initializer = initializer; | |
7769 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
7770 | ||
7771 | /* Maintain enumerator history. */ | |
7772 | gfc_find_symbol (name, NULL, 0, &sym); | |
7773 | create_enum_history (sym, last_initializer); | |
7774 | ||
7775 | return (t == SUCCESS) ? MATCH_YES : MATCH_ERROR; | |
7776 | ||
7777 | cleanup: | |
7778 | /* Free stuff up and return. */ | |
7779 | gfc_free_expr (initializer); | |
7780 | ||
7781 | return m; | |
7782 | } | |
7783 | ||
7784 | ||
f6d0e37a | 7785 | /* Match the enumerator definition statement. */ |
3b6a4b41 | 7786 | |
7787 | match | |
7788 | gfc_match_enumerator_def (void) | |
7789 | { | |
7790 | match m; | |
f6bb8f4b | 7791 | gfc_try t; |
e14bee04 | 7792 | |
3b6a4b41 | 7793 | gfc_clear_ts (¤t_ts); |
e14bee04 | 7794 | |
3b6a4b41 | 7795 | m = gfc_match (" enumerator"); |
7796 | if (m != MATCH_YES) | |
7797 | return m; | |
60fbbf9e | 7798 | |
7799 | m = gfc_match (" :: "); | |
7800 | if (m == MATCH_ERROR) | |
7801 | return m; | |
7802 | ||
7803 | colon_seen = (m == MATCH_YES); | |
e14bee04 | 7804 | |
3b6a4b41 | 7805 | if (gfc_current_state () != COMP_ENUM) |
7806 | { | |
7807 | gfc_error ("ENUM definition statement expected before %C"); | |
7808 | gfc_free_enum_history (); | |
7809 | return MATCH_ERROR; | |
7810 | } | |
7811 | ||
7812 | (¤t_ts)->type = BT_INTEGER; | |
7813 | (¤t_ts)->kind = gfc_c_int_kind; | |
e14bee04 | 7814 | |
60fbbf9e | 7815 | gfc_clear_attr (¤t_attr); |
7816 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, NULL); | |
7817 | if (t == FAILURE) | |
3b6a4b41 | 7818 | { |
60fbbf9e | 7819 | m = MATCH_ERROR; |
3b6a4b41 | 7820 | goto cleanup; |
7821 | } | |
7822 | ||
3b6a4b41 | 7823 | for (;;) |
7824 | { | |
60fbbf9e | 7825 | m = enumerator_decl (); |
3b6a4b41 | 7826 | if (m == MATCH_ERROR) |
a8beb4f8 | 7827 | { |
7828 | gfc_free_enum_history (); | |
7829 | goto cleanup; | |
7830 | } | |
3b6a4b41 | 7831 | if (m == MATCH_NO) |
7832 | break; | |
7833 | ||
7834 | if (gfc_match_eos () == MATCH_YES) | |
7835 | goto cleanup; | |
7836 | if (gfc_match_char (',') != MATCH_YES) | |
7837 | break; | |
7838 | } | |
7839 | ||
7840 | if (gfc_current_state () == COMP_ENUM) | |
7841 | { | |
7842 | gfc_free_enum_history (); | |
7843 | gfc_error ("Syntax error in ENUMERATOR definition at %C"); | |
7844 | m = MATCH_ERROR; | |
7845 | } | |
7846 | ||
7847 | cleanup: | |
7848 | gfc_free_array_spec (current_as); | |
7849 | current_as = NULL; | |
7850 | return m; | |
7851 | ||
7852 | } | |
7853 | ||
e449e4dd | 7854 | |
7fd88f6e | 7855 | /* Match binding attributes. */ |
7856 | ||
7857 | static match | |
64e93293 | 7858 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc) |
7fd88f6e | 7859 | { |
7860 | bool found_passing = false; | |
64e93293 | 7861 | bool seen_ptr = false; |
fe9b08a2 | 7862 | match m = MATCH_YES; |
7fd88f6e | 7863 | |
7864 | /* Intialize to defaults. Do so even before the MATCH_NO check so that in | |
7865 | this case the defaults are in there. */ | |
7866 | ba->access = ACCESS_UNKNOWN; | |
7867 | ba->pass_arg = NULL; | |
7868 | ba->pass_arg_num = 0; | |
7869 | ba->nopass = 0; | |
7870 | ba->non_overridable = 0; | |
61c3b81d | 7871 | ba->deferred = 0; |
fe9b08a2 | 7872 | ba->ppc = ppc; |
7fd88f6e | 7873 | |
7874 | /* If we find a comma, we believe there are binding attributes. */ | |
fe9b08a2 | 7875 | m = gfc_match_char (','); |
7876 | if (m == MATCH_NO) | |
7877 | goto done; | |
7fd88f6e | 7878 | |
7879 | do | |
7880 | { | |
e2f06a48 | 7881 | /* Access specifier. */ |
7882 | ||
7883 | m = gfc_match (" public"); | |
7fd88f6e | 7884 | if (m == MATCH_ERROR) |
7885 | goto error; | |
7886 | if (m == MATCH_YES) | |
7887 | { | |
e2f06a48 | 7888 | if (ba->access != ACCESS_UNKNOWN) |
7fd88f6e | 7889 | { |
e2f06a48 | 7890 | gfc_error ("Duplicate access-specifier at %C"); |
7fd88f6e | 7891 | goto error; |
7892 | } | |
7893 | ||
e2f06a48 | 7894 | ba->access = ACCESS_PUBLIC; |
7fd88f6e | 7895 | continue; |
7896 | } | |
7897 | ||
e2f06a48 | 7898 | m = gfc_match (" private"); |
7fd88f6e | 7899 | if (m == MATCH_ERROR) |
7900 | goto error; | |
7901 | if (m == MATCH_YES) | |
7902 | { | |
e2f06a48 | 7903 | if (ba->access != ACCESS_UNKNOWN) |
7fd88f6e | 7904 | { |
e2f06a48 | 7905 | gfc_error ("Duplicate access-specifier at %C"); |
7fd88f6e | 7906 | goto error; |
7907 | } | |
7908 | ||
e2f06a48 | 7909 | ba->access = ACCESS_PRIVATE; |
7fd88f6e | 7910 | continue; |
7911 | } | |
7912 | ||
e2f06a48 | 7913 | /* If inside GENERIC, the following is not allowed. */ |
7914 | if (!generic) | |
7fd88f6e | 7915 | { |
7fd88f6e | 7916 | |
e2f06a48 | 7917 | /* NOPASS flag. */ |
7918 | m = gfc_match (" nopass"); | |
7919 | if (m == MATCH_ERROR) | |
7920 | goto error; | |
7921 | if (m == MATCH_YES) | |
7fd88f6e | 7922 | { |
e2f06a48 | 7923 | if (found_passing) |
7924 | { | |
7925 | gfc_error ("Binding attributes already specify passing," | |
7926 | " illegal NOPASS at %C"); | |
7927 | goto error; | |
7928 | } | |
7929 | ||
7930 | found_passing = true; | |
7931 | ba->nopass = 1; | |
7932 | continue; | |
7fd88f6e | 7933 | } |
7934 | ||
e2f06a48 | 7935 | /* PASS possibly including argument. */ |
7936 | m = gfc_match (" pass"); | |
7937 | if (m == MATCH_ERROR) | |
7938 | goto error; | |
7939 | if (m == MATCH_YES) | |
7fd88f6e | 7940 | { |
e2f06a48 | 7941 | char arg[GFC_MAX_SYMBOL_LEN + 1]; |
7942 | ||
7943 | if (found_passing) | |
7944 | { | |
7945 | gfc_error ("Binding attributes already specify passing," | |
7946 | " illegal PASS at %C"); | |
7947 | goto error; | |
7948 | } | |
7949 | ||
7950 | m = gfc_match (" ( %n )", arg); | |
7951 | if (m == MATCH_ERROR) | |
7952 | goto error; | |
7953 | if (m == MATCH_YES) | |
fe9b08a2 | 7954 | ba->pass_arg = gfc_get_string (arg); |
e2f06a48 | 7955 | gcc_assert ((m == MATCH_YES) == (ba->pass_arg != NULL)); |
7956 | ||
7957 | found_passing = true; | |
7958 | ba->nopass = 0; | |
7959 | continue; | |
7fd88f6e | 7960 | } |
7961 | ||
64e93293 | 7962 | if (ppc) |
7963 | { | |
7964 | /* POINTER flag. */ | |
7965 | m = gfc_match (" pointer"); | |
7966 | if (m == MATCH_ERROR) | |
7967 | goto error; | |
7968 | if (m == MATCH_YES) | |
7969 | { | |
7970 | if (seen_ptr) | |
7971 | { | |
7972 | gfc_error ("Duplicate POINTER attribute at %C"); | |
7973 | goto error; | |
7974 | } | |
7975 | ||
7976 | seen_ptr = true; | |
64e93293 | 7977 | continue; |
7978 | } | |
7979 | } | |
7980 | else | |
7981 | { | |
7982 | /* NON_OVERRIDABLE flag. */ | |
7983 | m = gfc_match (" non_overridable"); | |
7984 | if (m == MATCH_ERROR) | |
7985 | goto error; | |
7986 | if (m == MATCH_YES) | |
7987 | { | |
7988 | if (ba->non_overridable) | |
7989 | { | |
7990 | gfc_error ("Duplicate NON_OVERRIDABLE at %C"); | |
7991 | goto error; | |
7992 | } | |
7993 | ||
7994 | ba->non_overridable = 1; | |
7995 | continue; | |
7996 | } | |
7997 | ||
7998 | /* DEFERRED flag. */ | |
7999 | m = gfc_match (" deferred"); | |
8000 | if (m == MATCH_ERROR) | |
8001 | goto error; | |
8002 | if (m == MATCH_YES) | |
8003 | { | |
8004 | if (ba->deferred) | |
8005 | { | |
8006 | gfc_error ("Duplicate DEFERRED at %C"); | |
8007 | goto error; | |
8008 | } | |
8009 | ||
8010 | ba->deferred = 1; | |
8011 | continue; | |
8012 | } | |
8013 | } | |
8014 | ||
7fd88f6e | 8015 | } |
8016 | ||
8017 | /* Nothing matching found. */ | |
e2f06a48 | 8018 | if (generic) |
8019 | gfc_error ("Expected access-specifier at %C"); | |
8020 | else | |
8021 | gfc_error ("Expected binding attribute at %C"); | |
7fd88f6e | 8022 | goto error; |
8023 | } | |
8024 | while (gfc_match_char (',') == MATCH_YES); | |
8025 | ||
61c3b81d | 8026 | /* NON_OVERRIDABLE and DEFERRED exclude themselves. */ |
8027 | if (ba->non_overridable && ba->deferred) | |
8028 | { | |
8029 | gfc_error ("NON_OVERRIDABLE and DEFERRED can't both appear at %C"); | |
8030 | goto error; | |
8031 | } | |
8032 | ||
fe9b08a2 | 8033 | m = MATCH_YES; |
8034 | ||
8035 | done: | |
e2f06a48 | 8036 | if (ba->access == ACCESS_UNKNOWN) |
8037 | ba->access = gfc_typebound_default_access; | |
8038 | ||
64e93293 | 8039 | if (ppc && !seen_ptr) |
8040 | { | |
8041 | gfc_error ("POINTER attribute is required for procedure pointer component" | |
8042 | " at %C"); | |
8043 | goto error; | |
8044 | } | |
8045 | ||
fe9b08a2 | 8046 | return m; |
7fd88f6e | 8047 | |
8048 | error: | |
7fd88f6e | 8049 | return MATCH_ERROR; |
8050 | } | |
8051 | ||
8052 | ||
8053 | /* Match a PROCEDURE specific binding inside a derived type. */ | |
8054 | ||
8055 | static match | |
8056 | match_procedure_in_type (void) | |
8057 | { | |
8058 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8059 | char target_buf[GFC_MAX_SYMBOL_LEN + 1]; | |
7a3aaef8 | 8060 | char* target = NULL, *ifc = NULL; |
4a12b9ba | 8061 | gfc_typebound_proc tb; |
7fd88f6e | 8062 | bool seen_colons; |
8063 | bool seen_attrs; | |
8064 | match m; | |
8065 | gfc_symtree* stree; | |
8066 | gfc_namespace* ns; | |
8067 | gfc_symbol* block; | |
7a3aaef8 | 8068 | int num; |
7fd88f6e | 8069 | |
8070 | /* Check current state. */ | |
8071 | gcc_assert (gfc_state_stack->state == COMP_DERIVED_CONTAINS); | |
8072 | block = gfc_state_stack->previous->sym; | |
8073 | gcc_assert (block); | |
8074 | ||
61c3b81d | 8075 | /* Try to match PROCEDURE(interface). */ |
7fd88f6e | 8076 | if (gfc_match (" (") == MATCH_YES) |
8077 | { | |
61c3b81d | 8078 | m = gfc_match_name (target_buf); |
8079 | if (m == MATCH_ERROR) | |
8080 | return m; | |
8081 | if (m != MATCH_YES) | |
8082 | { | |
8083 | gfc_error ("Interface-name expected after '(' at %C"); | |
8084 | return MATCH_ERROR; | |
8085 | } | |
8086 | ||
8087 | if (gfc_match (" )") != MATCH_YES) | |
8088 | { | |
8089 | gfc_error ("')' expected at %C"); | |
8090 | return MATCH_ERROR; | |
8091 | } | |
8092 | ||
7a3aaef8 | 8093 | ifc = target_buf; |
7fd88f6e | 8094 | } |
8095 | ||
8096 | /* Construct the data structure. */ | |
b3d1387f | 8097 | memset (&tb, 0, sizeof (tb)); |
4a12b9ba | 8098 | tb.where = gfc_current_locus; |
7fd88f6e | 8099 | |
8100 | /* Match binding attributes. */ | |
4a12b9ba | 8101 | m = match_binding_attributes (&tb, false, false); |
7fd88f6e | 8102 | if (m == MATCH_ERROR) |
8103 | return m; | |
8104 | seen_attrs = (m == MATCH_YES); | |
8105 | ||
7a3aaef8 | 8106 | /* Check that attribute DEFERRED is given if an interface is specified. */ |
4a12b9ba | 8107 | if (tb.deferred && !ifc) |
61c3b81d | 8108 | { |
8109 | gfc_error ("Interface must be specified for DEFERRED binding at %C"); | |
8110 | return MATCH_ERROR; | |
8111 | } | |
4a12b9ba | 8112 | if (ifc && !tb.deferred) |
61c3b81d | 8113 | { |
8114 | gfc_error ("PROCEDURE(interface) at %C should be declared DEFERRED"); | |
8115 | return MATCH_ERROR; | |
8116 | } | |
8117 | ||
7fd88f6e | 8118 | /* Match the colons. */ |
8119 | m = gfc_match (" ::"); | |
8120 | if (m == MATCH_ERROR) | |
8121 | return m; | |
8122 | seen_colons = (m == MATCH_YES); | |
8123 | if (seen_attrs && !seen_colons) | |
8124 | { | |
8125 | gfc_error ("Expected '::' after binding-attributes at %C"); | |
8126 | return MATCH_ERROR; | |
8127 | } | |
8128 | ||
7a3aaef8 | 8129 | /* Match the binding names. */ |
8130 | for(num=1;;num++) | |
7fd88f6e | 8131 | { |
7a3aaef8 | 8132 | m = gfc_match_name (name); |
8133 | if (m == MATCH_ERROR) | |
8134 | return m; | |
8135 | if (m == MATCH_NO) | |
61c3b81d | 8136 | { |
7a3aaef8 | 8137 | gfc_error ("Expected binding name at %C"); |
61c3b81d | 8138 | return MATCH_ERROR; |
8139 | } | |
8140 | ||
7a3aaef8 | 8141 | if (num>1 && gfc_notify_std (GFC_STD_F2008, "Fortran 2008: PROCEDURE list" |
8142 | " at %C") == FAILURE) | |
8143 | return MATCH_ERROR; | |
7fd88f6e | 8144 | |
7a3aaef8 | 8145 | /* Try to match the '=> target', if it's there. */ |
8146 | target = ifc; | |
8147 | m = gfc_match (" =>"); | |
7fd88f6e | 8148 | if (m == MATCH_ERROR) |
8149 | return m; | |
7a3aaef8 | 8150 | if (m == MATCH_YES) |
7fd88f6e | 8151 | { |
4a12b9ba | 8152 | if (tb.deferred) |
7a3aaef8 | 8153 | { |
8154 | gfc_error ("'=> target' is invalid for DEFERRED binding at %C"); | |
8155 | return MATCH_ERROR; | |
8156 | } | |
8157 | ||
8158 | if (!seen_colons) | |
8159 | { | |
8160 | gfc_error ("'::' needed in PROCEDURE binding with explicit target" | |
8161 | " at %C"); | |
8162 | return MATCH_ERROR; | |
8163 | } | |
8164 | ||
8165 | m = gfc_match_name (target_buf); | |
8166 | if (m == MATCH_ERROR) | |
8167 | return m; | |
8168 | if (m == MATCH_NO) | |
8169 | { | |
8170 | gfc_error ("Expected binding target after '=>' at %C"); | |
8171 | return MATCH_ERROR; | |
8172 | } | |
8173 | target = target_buf; | |
7fd88f6e | 8174 | } |
7fd88f6e | 8175 | |
7a3aaef8 | 8176 | /* If no target was found, it has the same name as the binding. */ |
8177 | if (!target) | |
8178 | target = name; | |
7fd88f6e | 8179 | |
7a3aaef8 | 8180 | /* Get the namespace to insert the symbols into. */ |
8181 | ns = block->f2k_derived; | |
8182 | gcc_assert (ns); | |
7fd88f6e | 8183 | |
7a3aaef8 | 8184 | /* If the binding is DEFERRED, check that the containing type is ABSTRACT. */ |
4a12b9ba | 8185 | if (tb.deferred && !block->attr.abstract) |
7a3aaef8 | 8186 | { |
8187 | gfc_error ("Type '%s' containing DEFERRED binding at %C " | |
8188 | "is not ABSTRACT", block->name); | |
8189 | return MATCH_ERROR; | |
8190 | } | |
7fd88f6e | 8191 | |
7a3aaef8 | 8192 | /* See if we already have a binding with this name in the symtree which |
8193 | would be an error. If a GENERIC already targetted this binding, it may | |
8194 | be already there but then typebound is still NULL. */ | |
8195 | stree = gfc_find_symtree (ns->tb_sym_root, name); | |
e204cb62 | 8196 | if (stree && stree->n.tb) |
7a3aaef8 | 8197 | { |
8198 | gfc_error ("There is already a procedure with binding name '%s' for " | |
8199 | "the derived type '%s' at %C", name, block->name); | |
8200 | return MATCH_ERROR; | |
8201 | } | |
61c3b81d | 8202 | |
7a3aaef8 | 8203 | /* Insert it and set attributes. */ |
7fd88f6e | 8204 | |
e204cb62 | 8205 | if (!stree) |
8206 | { | |
8207 | stree = gfc_new_symtree (&ns->tb_sym_root, name); | |
8208 | gcc_assert (stree); | |
8209 | } | |
4a12b9ba | 8210 | stree->n.tb = gfc_get_typebound_proc (&tb); |
3323e9b1 | 8211 | |
4a12b9ba | 8212 | if (gfc_get_sym_tree (target, gfc_current_ns, &stree->n.tb->u.specific, |
8213 | false)) | |
7a3aaef8 | 8214 | return MATCH_ERROR; |
4a12b9ba | 8215 | gfc_set_sym_referenced (stree->n.tb->u.specific->n.sym); |
7a3aaef8 | 8216 | |
8217 | if (gfc_match_eos () == MATCH_YES) | |
8218 | return MATCH_YES; | |
8219 | if (gfc_match_char (',') != MATCH_YES) | |
8220 | goto syntax; | |
3323e9b1 | 8221 | } |
7fd88f6e | 8222 | |
7a3aaef8 | 8223 | syntax: |
8224 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
8225 | return MATCH_ERROR; | |
7fd88f6e | 8226 | } |
8227 | ||
8228 | ||
e2f06a48 | 8229 | /* Match a GENERIC procedure binding inside a derived type. */ |
8230 | ||
8231 | match | |
8232 | gfc_match_generic (void) | |
8233 | { | |
8234 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
a36eb9ee | 8235 | char bind_name[GFC_MAX_SYMBOL_LEN + 16]; /* Allow space for OPERATOR(...). */ |
e2f06a48 | 8236 | gfc_symbol* block; |
8237 | gfc_typebound_proc tbattr; /* Used for match_binding_attributes. */ | |
8238 | gfc_typebound_proc* tb; | |
e2f06a48 | 8239 | gfc_namespace* ns; |
a36eb9ee | 8240 | interface_type op_type; |
8241 | gfc_intrinsic_op op; | |
e2f06a48 | 8242 | match m; |
8243 | ||
8244 | /* Check current state. */ | |
8245 | if (gfc_current_state () == COMP_DERIVED) | |
8246 | { | |
8247 | gfc_error ("GENERIC at %C must be inside a derived-type CONTAINS"); | |
8248 | return MATCH_ERROR; | |
8249 | } | |
8250 | if (gfc_current_state () != COMP_DERIVED_CONTAINS) | |
8251 | return MATCH_NO; | |
8252 | block = gfc_state_stack->previous->sym; | |
8253 | ns = block->f2k_derived; | |
8254 | gcc_assert (block && ns); | |
8255 | ||
b3d1387f | 8256 | memset (&tbattr, 0, sizeof (tbattr)); |
8257 | tbattr.where = gfc_current_locus; | |
8258 | ||
e2f06a48 | 8259 | /* See if we get an access-specifier. */ |
64e93293 | 8260 | m = match_binding_attributes (&tbattr, true, false); |
e2f06a48 | 8261 | if (m == MATCH_ERROR) |
8262 | goto error; | |
8263 | ||
8264 | /* Now the colons, those are required. */ | |
8265 | if (gfc_match (" ::") != MATCH_YES) | |
8266 | { | |
8267 | gfc_error ("Expected '::' at %C"); | |
8268 | goto error; | |
8269 | } | |
8270 | ||
a36eb9ee | 8271 | /* Match the binding name; depending on type (operator / generic) format |
8272 | it for future error messages into bind_name. */ | |
8273 | ||
8274 | m = gfc_match_generic_spec (&op_type, name, &op); | |
e2f06a48 | 8275 | if (m == MATCH_ERROR) |
8276 | return MATCH_ERROR; | |
8277 | if (m == MATCH_NO) | |
8278 | { | |
a36eb9ee | 8279 | gfc_error ("Expected generic name or operator descriptor at %C"); |
e2f06a48 | 8280 | goto error; |
8281 | } | |
8282 | ||
a36eb9ee | 8283 | switch (op_type) |
e2f06a48 | 8284 | { |
a36eb9ee | 8285 | case INTERFACE_GENERIC: |
8286 | snprintf (bind_name, sizeof (bind_name), "%s", name); | |
8287 | break; | |
8288 | ||
8289 | case INTERFACE_USER_OP: | |
8290 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(.%s.)", name); | |
8291 | break; | |
8292 | ||
8293 | case INTERFACE_INTRINSIC_OP: | |
8294 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(%s)", | |
8295 | gfc_op2string (op)); | |
8296 | break; | |
8297 | ||
8298 | default: | |
8299 | gcc_unreachable (); | |
8300 | } | |
3323e9b1 | 8301 | |
a36eb9ee | 8302 | /* Match the required =>. */ |
8303 | if (gfc_match (" =>") != MATCH_YES) | |
8304 | { | |
8305 | gfc_error ("Expected '=>' at %C"); | |
8306 | goto error; | |
8307 | } | |
8308 | ||
8309 | /* Try to find existing GENERIC binding with this name / for this operator; | |
8310 | if there is something, check that it is another GENERIC and then extend | |
8311 | it rather than building a new node. Otherwise, create it and put it | |
8312 | at the right position. */ | |
8313 | ||
8314 | switch (op_type) | |
8315 | { | |
8316 | case INTERFACE_USER_OP: | |
8317 | case INTERFACE_GENERIC: | |
8318 | { | |
8319 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
8320 | gfc_symtree* st; | |
8321 | ||
8322 | st = gfc_find_symtree (is_op ? ns->tb_uop_root : ns->tb_sym_root, name); | |
8323 | if (st) | |
8324 | { | |
8325 | tb = st->n.tb; | |
8326 | gcc_assert (tb); | |
8327 | } | |
8328 | else | |
8329 | tb = NULL; | |
8330 | ||
8331 | break; | |
8332 | } | |
8333 | ||
8334 | case INTERFACE_INTRINSIC_OP: | |
8335 | tb = ns->tb_op[op]; | |
8336 | break; | |
8337 | ||
8338 | default: | |
8339 | gcc_unreachable (); | |
8340 | } | |
8341 | ||
8342 | if (tb) | |
8343 | { | |
3323e9b1 | 8344 | if (!tb->is_generic) |
e2f06a48 | 8345 | { |
a36eb9ee | 8346 | gcc_assert (op_type == INTERFACE_GENERIC); |
e2f06a48 | 8347 | gfc_error ("There's already a non-generic procedure with binding name" |
8348 | " '%s' for the derived type '%s' at %C", | |
a36eb9ee | 8349 | bind_name, block->name); |
e2f06a48 | 8350 | goto error; |
8351 | } | |
8352 | ||
e2f06a48 | 8353 | if (tb->access != tbattr.access) |
8354 | { | |
8355 | gfc_error ("Binding at %C must have the same access as already" | |
a36eb9ee | 8356 | " defined binding '%s'", bind_name); |
e2f06a48 | 8357 | goto error; |
8358 | } | |
8359 | } | |
8360 | else | |
8361 | { | |
4a12b9ba | 8362 | tb = gfc_get_typebound_proc (NULL); |
e2f06a48 | 8363 | tb->where = gfc_current_locus; |
8364 | tb->access = tbattr.access; | |
8365 | tb->is_generic = 1; | |
8366 | tb->u.generic = NULL; | |
a36eb9ee | 8367 | |
8368 | switch (op_type) | |
8369 | { | |
8370 | case INTERFACE_GENERIC: | |
8371 | case INTERFACE_USER_OP: | |
8372 | { | |
8373 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
8374 | gfc_symtree* st; | |
8375 | ||
8376 | st = gfc_new_symtree (is_op ? &ns->tb_uop_root : &ns->tb_sym_root, | |
8377 | name); | |
8378 | gcc_assert (st); | |
8379 | st->n.tb = tb; | |
8380 | ||
8381 | break; | |
8382 | } | |
8383 | ||
8384 | case INTERFACE_INTRINSIC_OP: | |
8385 | ns->tb_op[op] = tb; | |
8386 | break; | |
8387 | ||
8388 | default: | |
8389 | gcc_unreachable (); | |
8390 | } | |
e2f06a48 | 8391 | } |
8392 | ||
8393 | /* Now, match all following names as specific targets. */ | |
8394 | do | |
8395 | { | |
8396 | gfc_symtree* target_st; | |
8397 | gfc_tbp_generic* target; | |
8398 | ||
8399 | m = gfc_match_name (name); | |
8400 | if (m == MATCH_ERROR) | |
8401 | goto error; | |
8402 | if (m == MATCH_NO) | |
8403 | { | |
8404 | gfc_error ("Expected specific binding name at %C"); | |
8405 | goto error; | |
8406 | } | |
8407 | ||
3323e9b1 | 8408 | target_st = gfc_get_tbp_symtree (&ns->tb_sym_root, name); |
e2f06a48 | 8409 | |
8410 | /* See if this is a duplicate specification. */ | |
8411 | for (target = tb->u.generic; target; target = target->next) | |
8412 | if (target_st == target->specific_st) | |
8413 | { | |
8414 | gfc_error ("'%s' already defined as specific binding for the" | |
a36eb9ee | 8415 | " generic '%s' at %C", name, bind_name); |
e2f06a48 | 8416 | goto error; |
8417 | } | |
8418 | ||
e2f06a48 | 8419 | target = gfc_get_tbp_generic (); |
8420 | target->specific_st = target_st; | |
8421 | target->specific = NULL; | |
8422 | target->next = tb->u.generic; | |
5c0f7d99 | 8423 | target->is_operator = ((op_type == INTERFACE_USER_OP) |
8424 | || (op_type == INTERFACE_INTRINSIC_OP)); | |
e2f06a48 | 8425 | tb->u.generic = target; |
8426 | } | |
8427 | while (gfc_match (" ,") == MATCH_YES); | |
8428 | ||
8429 | /* Here should be the end. */ | |
8430 | if (gfc_match_eos () != MATCH_YES) | |
8431 | { | |
8432 | gfc_error ("Junk after GENERIC binding at %C"); | |
8433 | goto error; | |
8434 | } | |
8435 | ||
8436 | return MATCH_YES; | |
8437 | ||
8438 | error: | |
8439 | return MATCH_ERROR; | |
8440 | } | |
8441 | ||
8442 | ||
223f0f57 | 8443 | /* Match a FINAL declaration inside a derived type. */ |
8444 | ||
8445 | match | |
8446 | gfc_match_final_decl (void) | |
8447 | { | |
8448 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8449 | gfc_symbol* sym; | |
8450 | match m; | |
8451 | gfc_namespace* module_ns; | |
8452 | bool first, last; | |
7fd88f6e | 8453 | gfc_symbol* block; |
223f0f57 | 8454 | |
519651c1 | 8455 | if (gfc_current_form == FORM_FREE) |
8456 | { | |
8457 | char c = gfc_peek_ascii_char (); | |
8458 | if (!gfc_is_whitespace (c) && c != ':') | |
8459 | return MATCH_NO; | |
8460 | } | |
8461 | ||
7fd88f6e | 8462 | if (gfc_state_stack->state != COMP_DERIVED_CONTAINS) |
223f0f57 | 8463 | { |
519651c1 | 8464 | if (gfc_current_form == FORM_FIXED) |
8465 | return MATCH_NO; | |
8466 | ||
223f0f57 | 8467 | gfc_error ("FINAL declaration at %C must be inside a derived type " |
7fd88f6e | 8468 | "CONTAINS section"); |
223f0f57 | 8469 | return MATCH_ERROR; |
8470 | } | |
8471 | ||
7fd88f6e | 8472 | block = gfc_state_stack->previous->sym; |
8473 | gcc_assert (block); | |
223f0f57 | 8474 | |
7fd88f6e | 8475 | if (!gfc_state_stack->previous || !gfc_state_stack->previous->previous |
8476 | || gfc_state_stack->previous->previous->state != COMP_MODULE) | |
223f0f57 | 8477 | { |
8478 | gfc_error ("Derived type declaration with FINAL at %C must be in the" | |
8479 | " specification part of a MODULE"); | |
8480 | return MATCH_ERROR; | |
8481 | } | |
8482 | ||
8483 | module_ns = gfc_current_ns; | |
8484 | gcc_assert (module_ns); | |
8485 | gcc_assert (module_ns->proc_name->attr.flavor == FL_MODULE); | |
8486 | ||
8487 | /* Match optional ::, don't care about MATCH_YES or MATCH_NO. */ | |
8488 | if (gfc_match (" ::") == MATCH_ERROR) | |
8489 | return MATCH_ERROR; | |
8490 | ||
8491 | /* Match the sequence of procedure names. */ | |
8492 | first = true; | |
8493 | last = false; | |
8494 | do | |
8495 | { | |
8496 | gfc_finalizer* f; | |
8497 | ||
8498 | if (first && gfc_match_eos () == MATCH_YES) | |
8499 | { | |
8500 | gfc_error ("Empty FINAL at %C"); | |
8501 | return MATCH_ERROR; | |
8502 | } | |
8503 | ||
8504 | m = gfc_match_name (name); | |
8505 | if (m == MATCH_NO) | |
8506 | { | |
8507 | gfc_error ("Expected module procedure name at %C"); | |
8508 | return MATCH_ERROR; | |
8509 | } | |
8510 | else if (m != MATCH_YES) | |
8511 | return MATCH_ERROR; | |
8512 | ||
8513 | if (gfc_match_eos () == MATCH_YES) | |
8514 | last = true; | |
8515 | if (!last && gfc_match_char (',') != MATCH_YES) | |
8516 | { | |
8517 | gfc_error ("Expected ',' at %C"); | |
8518 | return MATCH_ERROR; | |
8519 | } | |
8520 | ||
8521 | if (gfc_get_symbol (name, module_ns, &sym)) | |
8522 | { | |
8523 | gfc_error ("Unknown procedure name \"%s\" at %C", name); | |
8524 | return MATCH_ERROR; | |
8525 | } | |
8526 | ||
8527 | /* Mark the symbol as module procedure. */ | |
8528 | if (sym->attr.proc != PROC_MODULE | |
8529 | && gfc_add_procedure (&sym->attr, PROC_MODULE, | |
8530 | sym->name, NULL) == FAILURE) | |
8531 | return MATCH_ERROR; | |
8532 | ||
8533 | /* Check if we already have this symbol in the list, this is an error. */ | |
7fd88f6e | 8534 | for (f = block->f2k_derived->finalizers; f; f = f->next) |
e449e4dd | 8535 | if (f->proc_sym == sym) |
223f0f57 | 8536 | { |
8537 | gfc_error ("'%s' at %C is already defined as FINAL procedure!", | |
8538 | name); | |
8539 | return MATCH_ERROR; | |
8540 | } | |
8541 | ||
8542 | /* Add this symbol to the list of finalizers. */ | |
7fd88f6e | 8543 | gcc_assert (block->f2k_derived); |
223f0f57 | 8544 | ++sym->refs; |
48d8ad5a | 8545 | f = XCNEW (gfc_finalizer); |
e449e4dd | 8546 | f->proc_sym = sym; |
8547 | f->proc_tree = NULL; | |
223f0f57 | 8548 | f->where = gfc_current_locus; |
7fd88f6e | 8549 | f->next = block->f2k_derived->finalizers; |
8550 | block->f2k_derived->finalizers = f; | |
223f0f57 | 8551 | |
8552 | first = false; | |
8553 | } | |
8554 | while (!last); | |
8555 | ||
8556 | return MATCH_YES; | |
8557 | } | |
36b0a1b0 | 8558 | |
8559 | ||
8560 | const ext_attr_t ext_attr_list[] = { | |
8561 | { "dllimport", EXT_ATTR_DLLIMPORT, "dllimport" }, | |
8562 | { "dllexport", EXT_ATTR_DLLEXPORT, "dllexport" }, | |
8563 | { "cdecl", EXT_ATTR_CDECL, "cdecl" }, | |
8564 | { "stdcall", EXT_ATTR_STDCALL, "stdcall" }, | |
8565 | { "fastcall", EXT_ATTR_FASTCALL, "fastcall" }, | |
8566 | { NULL, EXT_ATTR_LAST, NULL } | |
8567 | }; | |
8568 | ||
8569 | /* Match a !GCC$ ATTRIBUTES statement of the form: | |
8570 | !GCC$ ATTRIBUTES attribute-list :: var-name [, var-name] ... | |
8571 | When we come here, we have already matched the !GCC$ ATTRIBUTES string. | |
8572 | ||
8573 | TODO: We should support all GCC attributes using the same syntax for | |
8574 | the attribute list, i.e. the list in C | |
8575 | __attributes(( attribute-list )) | |
8576 | matches then | |
8577 | !GCC$ ATTRIBUTES attribute-list :: | |
8578 | Cf. c-parser.c's c_parser_attributes; the data can then directly be | |
8579 | saved into a TREE. | |
8580 | ||
8581 | As there is absolutely no risk of confusion, we should never return | |
8582 | MATCH_NO. */ | |
8583 | match | |
8584 | gfc_match_gcc_attributes (void) | |
8585 | { | |
8586 | symbol_attribute attr; | |
8587 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8588 | unsigned id; | |
8589 | gfc_symbol *sym; | |
8590 | match m; | |
8591 | ||
8592 | gfc_clear_attr (&attr); | |
8593 | for(;;) | |
8594 | { | |
8595 | char ch; | |
8596 | ||
8597 | if (gfc_match_name (name) != MATCH_YES) | |
8598 | return MATCH_ERROR; | |
8599 | ||
8600 | for (id = 0; id < EXT_ATTR_LAST; id++) | |
8601 | if (strcmp (name, ext_attr_list[id].name) == 0) | |
8602 | break; | |
8603 | ||
8604 | if (id == EXT_ATTR_LAST) | |
8605 | { | |
8606 | gfc_error ("Unknown attribute in !GCC$ ATTRIBUTES statement at %C"); | |
8607 | return MATCH_ERROR; | |
8608 | } | |
8609 | ||
de0c4488 | 8610 | if (gfc_add_ext_attribute (&attr, (ext_attr_id_t) id, &gfc_current_locus) |
36b0a1b0 | 8611 | == FAILURE) |
8612 | return MATCH_ERROR; | |
8613 | ||
8614 | gfc_gobble_whitespace (); | |
8615 | ch = gfc_next_ascii_char (); | |
8616 | if (ch == ':') | |
8617 | { | |
8618 | /* This is the successful exit condition for the loop. */ | |
8619 | if (gfc_next_ascii_char () == ':') | |
8620 | break; | |
8621 | } | |
8622 | ||
8623 | if (ch == ',') | |
8624 | continue; | |
8625 | ||
8626 | goto syntax; | |
8627 | } | |
8628 | ||
8629 | if (gfc_match_eos () == MATCH_YES) | |
8630 | goto syntax; | |
8631 | ||
8632 | for(;;) | |
8633 | { | |
8634 | m = gfc_match_name (name); | |
8635 | if (m != MATCH_YES) | |
8636 | return m; | |
8637 | ||
8638 | if (find_special (name, &sym, true)) | |
8639 | return MATCH_ERROR; | |
8640 | ||
8641 | sym->attr.ext_attr |= attr.ext_attr; | |
8642 | ||
8643 | if (gfc_match_eos () == MATCH_YES) | |
8644 | break; | |
8645 | ||
8646 | if (gfc_match_char (',') != MATCH_YES) | |
8647 | goto syntax; | |
8648 | } | |
8649 | ||
8650 | return MATCH_YES; | |
8651 | ||
8652 | syntax: | |
8653 | gfc_error ("Syntax error in !GCC$ ATTRIBUTES statement at %C"); | |
8654 | return MATCH_ERROR; | |
8655 | } |