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4ee9c684 | 1 | /* Declaration statement matcher |
fbd26352 | 2 | Copyright (C) 2002-2019 Free Software Foundation, Inc. |
4ee9c684 | 3 | Contributed by Andy Vaught |
4 | ||
c84b470d | 5 | This file is part of GCC. |
4ee9c684 | 6 | |
c84b470d | 7 | GCC is free software; you can redistribute it and/or modify it under |
8 | the terms of the GNU General Public License as published by the Free | |
bdabe786 | 9 | Software Foundation; either version 3, or (at your option) any later |
c84b470d | 10 | version. |
4ee9c684 | 11 | |
c84b470d | 12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
4ee9c684 | 16 | |
17 | You should have received a copy of the GNU General Public License | |
bdabe786 | 18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
4ee9c684 | 20 | |
4ee9c684 | 21 | #include "config.h" |
7436502b | 22 | #include "system.h" |
e4d6c7fc | 23 | #include "coretypes.h" |
4cba6f60 | 24 | #include "options.h" |
25 | #include "tree.h" | |
4ee9c684 | 26 | #include "gfortran.h" |
4cba6f60 | 27 | #include "stringpool.h" |
4ee9c684 | 28 | #include "match.h" |
29 | #include "parse.h" | |
126387b5 | 30 | #include "constructor.h" |
dd2e9d21 | 31 | #include "target.h" |
cbbac028 | 32 | |
33 | /* Macros to access allocate memory for gfc_data_variable, | |
34 | gfc_data_value and gfc_data. */ | |
48d8ad5a | 35 | #define gfc_get_data_variable() XCNEW (gfc_data_variable) |
36 | #define gfc_get_data_value() XCNEW (gfc_data_value) | |
37 | #define gfc_get_data() XCNEW (gfc_data) | |
cbbac028 | 38 | |
39 | ||
60e19868 | 40 | static bool set_binding_label (const char **, const char *, int); |
7b2060ba | 41 | |
42 | ||
36ae04f2 | 43 | /* This flag is set if an old-style length selector is matched |
4ee9c684 | 44 | during a type-declaration statement. */ |
45 | ||
46 | static int old_char_selector; | |
47 | ||
5739e54e | 48 | /* When variables acquire types and attributes from a declaration |
4ee9c684 | 49 | statement, they get them from the following static variables. The |
50 | first part of a declaration sets these variables and the second | |
51 | part copies these into symbol structures. */ | |
52 | ||
53 | static gfc_typespec current_ts; | |
54 | ||
55 | static symbol_attribute current_attr; | |
56 | static gfc_array_spec *current_as; | |
57 | static int colon_seen; | |
8ef2cf76 | 58 | static int attr_seen; |
4ee9c684 | 59 | |
c5d33754 | 60 | /* The current binding label (if any). */ |
1d8a57d8 | 61 | static const char* curr_binding_label; |
c5d33754 | 62 | /* Need to know how many identifiers are on the current data declaration |
63 | line in case we're given the BIND(C) attribute with a NAME= specifier. */ | |
64 | static int num_idents_on_line; | |
65 | /* Need to know if a NAME= specifier was found during gfc_match_bind_c so we | |
66 | can supply a name if the curr_binding_label is nil and NAME= was not. */ | |
67 | static int has_name_equals = 0; | |
68 | ||
3b6a4b41 | 69 | /* Initializer of the previous enumerator. */ |
70 | ||
71 | static gfc_expr *last_initializer; | |
72 | ||
73 | /* History of all the enumerators is maintained, so that | |
74 | kind values of all the enumerators could be updated depending | |
75 | upon the maximum initialized value. */ | |
76 | ||
77 | typedef struct enumerator_history | |
78 | { | |
79 | gfc_symbol *sym; | |
80 | gfc_expr *initializer; | |
81 | struct enumerator_history *next; | |
82 | } | |
83 | enumerator_history; | |
84 | ||
85 | /* Header of enum history chain. */ | |
86 | ||
87 | static enumerator_history *enum_history = NULL; | |
88 | ||
89 | /* Pointer of enum history node containing largest initializer. */ | |
90 | ||
91 | static enumerator_history *max_enum = NULL; | |
92 | ||
4ee9c684 | 93 | /* gfc_new_block points to the symbol of a newly matched block. */ |
94 | ||
95 | gfc_symbol *gfc_new_block; | |
96 | ||
077932f9 | 97 | bool gfc_matching_function; |
67a51c8e | 98 | |
82841c8f | 99 | /* Set upon parsing a !GCC$ unroll n directive for use in the next loop. */ |
100 | int directive_unroll = -1; | |
101 | ||
f052211c | 102 | /* Map of middle-end built-ins that should be vectorized. */ |
103 | hash_map<nofree_string_hash, int> *gfc_vectorized_builtins; | |
104 | ||
9d958d5b | 105 | /* If a kind expression of a component of a parameterized derived type is |
106 | parameterized, temporarily store the expression here. */ | |
107 | static gfc_expr *saved_kind_expr = NULL; | |
108 | ||
109 | /* Used to store the parameter list arising in a PDT declaration and | |
110 | in the typespec of a PDT variable or component. */ | |
111 | static gfc_actual_arglist *decl_type_param_list; | |
112 | static gfc_actual_arglist *type_param_spec_list; | |
113 | ||
b4f45d02 | 114 | /********************* DATA statement subroutines *********************/ |
115 | ||
1bfea7e8 | 116 | static bool in_match_data = false; |
117 | ||
118 | bool | |
119 | gfc_in_match_data (void) | |
120 | { | |
121 | return in_match_data; | |
122 | } | |
123 | ||
cbbac028 | 124 | static void |
125 | set_in_match_data (bool set_value) | |
1bfea7e8 | 126 | { |
127 | in_match_data = set_value; | |
128 | } | |
129 | ||
b4f45d02 | 130 | /* Free a gfc_data_variable structure and everything beneath it. */ |
131 | ||
132 | static void | |
1a9745d2 | 133 | free_variable (gfc_data_variable *p) |
b4f45d02 | 134 | { |
135 | gfc_data_variable *q; | |
136 | ||
137 | for (; p; p = q) | |
138 | { | |
139 | q = p->next; | |
140 | gfc_free_expr (p->expr); | |
141 | gfc_free_iterator (&p->iter, 0); | |
142 | free_variable (p->list); | |
434f0922 | 143 | free (p); |
b4f45d02 | 144 | } |
145 | } | |
146 | ||
147 | ||
148 | /* Free a gfc_data_value structure and everything beneath it. */ | |
149 | ||
150 | static void | |
1a9745d2 | 151 | free_value (gfc_data_value *p) |
b4f45d02 | 152 | { |
153 | gfc_data_value *q; | |
154 | ||
155 | for (; p; p = q) | |
156 | { | |
157 | q = p->next; | |
2d4466dd | 158 | mpz_clear (p->repeat); |
b4f45d02 | 159 | gfc_free_expr (p->expr); |
434f0922 | 160 | free (p); |
b4f45d02 | 161 | } |
162 | } | |
163 | ||
164 | ||
165 | /* Free a list of gfc_data structures. */ | |
166 | ||
167 | void | |
1a9745d2 | 168 | gfc_free_data (gfc_data *p) |
b4f45d02 | 169 | { |
170 | gfc_data *q; | |
171 | ||
172 | for (; p; p = q) | |
173 | { | |
174 | q = p->next; | |
b4f45d02 | 175 | free_variable (p->var); |
176 | free_value (p->value); | |
434f0922 | 177 | free (p); |
b4f45d02 | 178 | } |
179 | } | |
180 | ||
181 | ||
af29c1f0 | 182 | /* Free all data in a namespace. */ |
1a9745d2 | 183 | |
af29c1f0 | 184 | static void |
f6d0e37a | 185 | gfc_free_data_all (gfc_namespace *ns) |
af29c1f0 | 186 | { |
187 | gfc_data *d; | |
188 | ||
189 | for (;ns->data;) | |
190 | { | |
191 | d = ns->data->next; | |
434f0922 | 192 | free (ns->data); |
af29c1f0 | 193 | ns->data = d; |
194 | } | |
195 | } | |
196 | ||
388ce1b2 | 197 | /* Reject data parsed since the last restore point was marked. */ |
198 | ||
199 | void | |
200 | gfc_reject_data (gfc_namespace *ns) | |
201 | { | |
202 | gfc_data *d; | |
203 | ||
204 | while (ns->data && ns->data != ns->old_data) | |
205 | { | |
206 | d = ns->data->next; | |
207 | free (ns->data); | |
208 | ns->data = d; | |
209 | } | |
210 | } | |
af29c1f0 | 211 | |
b4f45d02 | 212 | static match var_element (gfc_data_variable *); |
213 | ||
214 | /* Match a list of variables terminated by an iterator and a right | |
215 | parenthesis. */ | |
216 | ||
217 | static match | |
1a9745d2 | 218 | var_list (gfc_data_variable *parent) |
b4f45d02 | 219 | { |
220 | gfc_data_variable *tail, var; | |
221 | match m; | |
222 | ||
223 | m = var_element (&var); | |
224 | if (m == MATCH_ERROR) | |
225 | return MATCH_ERROR; | |
226 | if (m == MATCH_NO) | |
227 | goto syntax; | |
228 | ||
229 | tail = gfc_get_data_variable (); | |
230 | *tail = var; | |
231 | ||
232 | parent->list = tail; | |
233 | ||
234 | for (;;) | |
235 | { | |
236 | if (gfc_match_char (',') != MATCH_YES) | |
237 | goto syntax; | |
238 | ||
239 | m = gfc_match_iterator (&parent->iter, 1); | |
240 | if (m == MATCH_YES) | |
241 | break; | |
242 | if (m == MATCH_ERROR) | |
243 | return MATCH_ERROR; | |
244 | ||
245 | m = var_element (&var); | |
246 | if (m == MATCH_ERROR) | |
247 | return MATCH_ERROR; | |
248 | if (m == MATCH_NO) | |
249 | goto syntax; | |
250 | ||
251 | tail->next = gfc_get_data_variable (); | |
252 | tail = tail->next; | |
253 | ||
254 | *tail = var; | |
255 | } | |
256 | ||
257 | if (gfc_match_char (')') != MATCH_YES) | |
258 | goto syntax; | |
259 | return MATCH_YES; | |
260 | ||
261 | syntax: | |
262 | gfc_syntax_error (ST_DATA); | |
263 | return MATCH_ERROR; | |
264 | } | |
265 | ||
266 | ||
267 | /* Match a single element in a data variable list, which can be a | |
268 | variable-iterator list. */ | |
269 | ||
270 | static match | |
c1977dbe | 271 | var_element (gfc_data_variable *new_var) |
b4f45d02 | 272 | { |
273 | match m; | |
274 | gfc_symbol *sym; | |
275 | ||
c1977dbe | 276 | memset (new_var, 0, sizeof (gfc_data_variable)); |
b4f45d02 | 277 | |
278 | if (gfc_match_char ('(') == MATCH_YES) | |
c1977dbe | 279 | return var_list (new_var); |
b4f45d02 | 280 | |
c1977dbe | 281 | m = gfc_match_variable (&new_var->expr, 0); |
b4f45d02 | 282 | if (m != MATCH_YES) |
283 | return m; | |
284 | ||
3e6f2100 | 285 | if (new_var->expr->expr_type == EXPR_CONSTANT |
286 | && new_var->expr->symtree == NULL) | |
287 | { | |
288 | gfc_error ("Inquiry parameter cannot appear in a " | |
289 | "data-stmt-object-list at %C"); | |
290 | return MATCH_ERROR; | |
291 | } | |
292 | ||
c1977dbe | 293 | sym = new_var->expr->symtree->n.sym; |
b4f45d02 | 294 | |
40de255b | 295 | /* Symbol should already have an associated type. */ |
60e19868 | 296 | if (!gfc_check_symbol_typed (sym, gfc_current_ns, false, gfc_current_locus)) |
40de255b | 297 | return MATCH_ERROR; |
298 | ||
1a9745d2 | 299 | if (!sym->attr.function && gfc_current_ns->parent |
300 | && gfc_current_ns->parent == sym->ns) | |
b4f45d02 | 301 | { |
716da296 | 302 | gfc_error ("Host associated variable %qs may not be in the DATA " |
7698a624 | 303 | "statement at %C", sym->name); |
b4f45d02 | 304 | return MATCH_ERROR; |
305 | } | |
306 | ||
c8df3e9c | 307 | if (gfc_current_state () != COMP_BLOCK_DATA |
1a9745d2 | 308 | && sym->attr.in_common |
60e19868 | 309 | && !gfc_notify_std (GFC_STD_GNU, "initialization of " |
0d2b3c9c | 310 | "common block variable %qs in DATA statement at %C", |
60e19868 | 311 | sym->name)) |
c8df3e9c | 312 | return MATCH_ERROR; |
b4f45d02 | 313 | |
60e19868 | 314 | if (!gfc_add_data (&sym->attr, sym->name, &new_var->expr->where)) |
b4f45d02 | 315 | return MATCH_ERROR; |
316 | ||
317 | return MATCH_YES; | |
318 | } | |
319 | ||
320 | ||
321 | /* Match the top-level list of data variables. */ | |
322 | ||
323 | static match | |
1a9745d2 | 324 | top_var_list (gfc_data *d) |
b4f45d02 | 325 | { |
c1977dbe | 326 | gfc_data_variable var, *tail, *new_var; |
b4f45d02 | 327 | match m; |
328 | ||
329 | tail = NULL; | |
330 | ||
331 | for (;;) | |
332 | { | |
333 | m = var_element (&var); | |
334 | if (m == MATCH_NO) | |
335 | goto syntax; | |
336 | if (m == MATCH_ERROR) | |
337 | return MATCH_ERROR; | |
338 | ||
c1977dbe | 339 | new_var = gfc_get_data_variable (); |
340 | *new_var = var; | |
15cbe83d | 341 | if (new_var->expr) |
342 | new_var->expr->where = gfc_current_locus; | |
b4f45d02 | 343 | |
344 | if (tail == NULL) | |
c1977dbe | 345 | d->var = new_var; |
b4f45d02 | 346 | else |
c1977dbe | 347 | tail->next = new_var; |
b4f45d02 | 348 | |
c1977dbe | 349 | tail = new_var; |
b4f45d02 | 350 | |
351 | if (gfc_match_char ('/') == MATCH_YES) | |
352 | break; | |
353 | if (gfc_match_char (',') != MATCH_YES) | |
354 | goto syntax; | |
355 | } | |
356 | ||
357 | return MATCH_YES; | |
358 | ||
359 | syntax: | |
360 | gfc_syntax_error (ST_DATA); | |
af29c1f0 | 361 | gfc_free_data_all (gfc_current_ns); |
b4f45d02 | 362 | return MATCH_ERROR; |
363 | } | |
364 | ||
365 | ||
366 | static match | |
1a9745d2 | 367 | match_data_constant (gfc_expr **result) |
b4f45d02 | 368 | { |
369 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c2958b6b | 370 | gfc_symbol *sym, *dt_sym = NULL; |
b4f45d02 | 371 | gfc_expr *expr; |
372 | match m; | |
096d4ad9 | 373 | locus old_loc; |
b4f45d02 | 374 | |
375 | m = gfc_match_literal_constant (&expr, 1); | |
376 | if (m == MATCH_YES) | |
377 | { | |
378 | *result = expr; | |
379 | return MATCH_YES; | |
380 | } | |
381 | ||
382 | if (m == MATCH_ERROR) | |
383 | return MATCH_ERROR; | |
384 | ||
385 | m = gfc_match_null (result); | |
386 | if (m != MATCH_NO) | |
387 | return m; | |
388 | ||
096d4ad9 | 389 | old_loc = gfc_current_locus; |
390 | ||
391 | /* Should this be a structure component, try to match it | |
392 | before matching a name. */ | |
393 | m = gfc_match_rvalue (result); | |
394 | if (m == MATCH_ERROR) | |
395 | return m; | |
396 | ||
397 | if (m == MATCH_YES && (*result)->expr_type == EXPR_STRUCTURE) | |
398 | { | |
60e19868 | 399 | if (!gfc_simplify_expr (*result, 0)) |
096d4ad9 | 400 | m = MATCH_ERROR; |
401 | return m; | |
402 | } | |
021ff494 | 403 | else if (m == MATCH_YES) |
a8289010 | 404 | { |
bf96f320 | 405 | /* If a parameter inquiry ends up here, symtree is NULL but **result |
406 | contains the right constant expression. Check here. */ | |
407 | if ((*result)->symtree == NULL | |
408 | && (*result)->expr_type == EXPR_CONSTANT | |
409 | && ((*result)->ts.type == BT_INTEGER | |
410 | || (*result)->ts.type == BT_REAL)) | |
411 | return m; | |
412 | ||
a8289010 | 413 | /* F2018:R845 data-stmt-constant is initial-data-target. |
414 | A data-stmt-constant shall be ... initial-data-target if and | |
415 | only if the corresponding data-stmt-object has the POINTER | |
416 | attribute. ... If data-stmt-constant is initial-data-target | |
417 | the corresponding data statement object shall be | |
418 | data-pointer-initialization compatible (7.5.4.6) with the initial | |
419 | data target; the data statement object is initially associated | |
420 | with the target. */ | |
421 | if ((*result)->symtree->n.sym->attr.save | |
422 | && (*result)->symtree->n.sym->attr.target) | |
423 | return m; | |
424 | gfc_free_expr (*result); | |
425 | } | |
096d4ad9 | 426 | |
427 | gfc_current_locus = old_loc; | |
428 | ||
b4f45d02 | 429 | m = gfc_match_name (name); |
430 | if (m != MATCH_YES) | |
431 | return m; | |
432 | ||
433 | if (gfc_find_symbol (name, NULL, 1, &sym)) | |
434 | return MATCH_ERROR; | |
435 | ||
c2958b6b | 436 | if (sym && sym->attr.generic) |
437 | dt_sym = gfc_find_dt_in_generic (sym); | |
438 | ||
b4f45d02 | 439 | if (sym == NULL |
c2958b6b | 440 | || (sym->attr.flavor != FL_PARAMETER |
d7cd448a | 441 | && (!dt_sym || !gfc_fl_struct (dt_sym->attr.flavor)))) |
b4f45d02 | 442 | { |
716da296 | 443 | gfc_error ("Symbol %qs must be a PARAMETER in DATA statement at %C", |
b4f45d02 | 444 | name); |
fb5574d7 | 445 | *result = NULL; |
b4f45d02 | 446 | return MATCH_ERROR; |
447 | } | |
d7cd448a | 448 | else if (dt_sym && gfc_fl_struct (dt_sym->attr.flavor)) |
c2958b6b | 449 | return gfc_match_structure_constructor (dt_sym, result); |
b4f45d02 | 450 | |
f0a51891 | 451 | /* Check to see if the value is an initialization array expression. */ |
452 | if (sym->value->expr_type == EXPR_ARRAY) | |
453 | { | |
454 | gfc_current_locus = old_loc; | |
455 | ||
456 | m = gfc_match_init_expr (result); | |
457 | if (m == MATCH_ERROR) | |
458 | return m; | |
459 | ||
460 | if (m == MATCH_YES) | |
461 | { | |
60e19868 | 462 | if (!gfc_simplify_expr (*result, 0)) |
f0a51891 | 463 | m = MATCH_ERROR; |
464 | ||
465 | if ((*result)->expr_type == EXPR_CONSTANT) | |
466 | return m; | |
467 | else | |
468 | { | |
469 | gfc_error ("Invalid initializer %s in Data statement at %C", name); | |
470 | return MATCH_ERROR; | |
471 | } | |
472 | } | |
473 | } | |
474 | ||
b4f45d02 | 475 | *result = gfc_copy_expr (sym->value); |
476 | return MATCH_YES; | |
477 | } | |
478 | ||
479 | ||
480 | /* Match a list of values in a DATA statement. The leading '/' has | |
481 | already been seen at this point. */ | |
482 | ||
483 | static match | |
1a9745d2 | 484 | top_val_list (gfc_data *data) |
b4f45d02 | 485 | { |
c1977dbe | 486 | gfc_data_value *new_val, *tail; |
b4f45d02 | 487 | gfc_expr *expr; |
b4f45d02 | 488 | match m; |
489 | ||
490 | tail = NULL; | |
491 | ||
492 | for (;;) | |
493 | { | |
494 | m = match_data_constant (&expr); | |
495 | if (m == MATCH_NO) | |
496 | goto syntax; | |
497 | if (m == MATCH_ERROR) | |
498 | return MATCH_ERROR; | |
499 | ||
c1977dbe | 500 | new_val = gfc_get_data_value (); |
501 | mpz_init (new_val->repeat); | |
b4f45d02 | 502 | |
503 | if (tail == NULL) | |
c1977dbe | 504 | data->value = new_val; |
b4f45d02 | 505 | else |
c1977dbe | 506 | tail->next = new_val; |
b4f45d02 | 507 | |
c1977dbe | 508 | tail = new_val; |
b4f45d02 | 509 | |
510 | if (expr->ts.type != BT_INTEGER || gfc_match_char ('*') != MATCH_YES) | |
511 | { | |
512 | tail->expr = expr; | |
7d74abfd | 513 | mpz_set_ui (tail->repeat, 1); |
b4f45d02 | 514 | } |
515 | else | |
516 | { | |
021ff494 | 517 | mpz_set (tail->repeat, expr->value.integer); |
b4f45d02 | 518 | gfc_free_expr (expr); |
b4f45d02 | 519 | |
520 | m = match_data_constant (&tail->expr); | |
521 | if (m == MATCH_NO) | |
522 | goto syntax; | |
523 | if (m == MATCH_ERROR) | |
524 | return MATCH_ERROR; | |
525 | } | |
526 | ||
527 | if (gfc_match_char ('/') == MATCH_YES) | |
528 | break; | |
529 | if (gfc_match_char (',') == MATCH_NO) | |
530 | goto syntax; | |
531 | } | |
532 | ||
533 | return MATCH_YES; | |
534 | ||
535 | syntax: | |
536 | gfc_syntax_error (ST_DATA); | |
af29c1f0 | 537 | gfc_free_data_all (gfc_current_ns); |
b4f45d02 | 538 | return MATCH_ERROR; |
539 | } | |
540 | ||
541 | ||
542 | /* Matches an old style initialization. */ | |
543 | ||
544 | static match | |
545 | match_old_style_init (const char *name) | |
546 | { | |
547 | match m; | |
548 | gfc_symtree *st; | |
344b937e | 549 | gfc_symbol *sym; |
b4f45d02 | 550 | gfc_data *newdata; |
551 | ||
552 | /* Set up data structure to hold initializers. */ | |
553 | gfc_find_sym_tree (name, NULL, 0, &st); | |
344b937e | 554 | sym = st->n.sym; |
555 | ||
b4f45d02 | 556 | newdata = gfc_get_data (); |
557 | newdata->var = gfc_get_data_variable (); | |
558 | newdata->var->expr = gfc_get_variable_expr (st); | |
d9c759d9 | 559 | newdata->var->expr->where = sym->declared_at; |
5aed5db3 | 560 | newdata->where = gfc_current_locus; |
b4f45d02 | 561 | |
f6d0e37a | 562 | /* Match initial value list. This also eats the terminal '/'. */ |
b4f45d02 | 563 | m = top_val_list (newdata); |
564 | if (m != MATCH_YES) | |
565 | { | |
434f0922 | 566 | free (newdata); |
b4f45d02 | 567 | return m; |
568 | } | |
569 | ||
570 | if (gfc_pure (NULL)) | |
571 | { | |
572 | gfc_error ("Initialization at %C is not allowed in a PURE procedure"); | |
434f0922 | 573 | free (newdata); |
b4f45d02 | 574 | return MATCH_ERROR; |
575 | } | |
c77badf3 | 576 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
8b0a2e85 | 577 | |
344b937e | 578 | /* Mark the variable as having appeared in a data statement. */ |
60e19868 | 579 | if (!gfc_add_data (&sym->attr, sym->name, &sym->declared_at)) |
344b937e | 580 | { |
434f0922 | 581 | free (newdata); |
344b937e | 582 | return MATCH_ERROR; |
583 | } | |
584 | ||
b4f45d02 | 585 | /* Chain in namespace list of DATA initializers. */ |
586 | newdata->next = gfc_current_ns->data; | |
587 | gfc_current_ns->data = newdata; | |
588 | ||
589 | return m; | |
590 | } | |
591 | ||
1a9745d2 | 592 | |
b4f45d02 | 593 | /* Match the stuff following a DATA statement. If ERROR_FLAG is set, |
39fca56b | 594 | we are matching a DATA statement and are therefore issuing an error |
e14bee04 | 595 | if we encounter something unexpected, if not, we're trying to match |
fe06c0d5 | 596 | an old-style initialization expression of the form INTEGER I /2/. */ |
b4f45d02 | 597 | |
598 | match | |
599 | gfc_match_data (void) | |
600 | { | |
c1977dbe | 601 | gfc_data *new_data; |
1d782298 | 602 | gfc_expr *e; |
15cbe83d | 603 | gfc_ref *ref; |
b4f45d02 | 604 | match m; |
605 | ||
c286c294 | 606 | /* Before parsing the rest of a DATA statement, check F2008:c1206. */ |
607 | if ((gfc_current_state () == COMP_FUNCTION | |
608 | || gfc_current_state () == COMP_SUBROUTINE) | |
609 | && gfc_state_stack->previous->state == COMP_INTERFACE) | |
610 | { | |
611 | gfc_error ("DATA statement at %C cannot appear within an INTERFACE"); | |
612 | return MATCH_ERROR; | |
613 | } | |
614 | ||
cbbac028 | 615 | set_in_match_data (true); |
1bfea7e8 | 616 | |
b4f45d02 | 617 | for (;;) |
618 | { | |
c1977dbe | 619 | new_data = gfc_get_data (); |
620 | new_data->where = gfc_current_locus; | |
b4f45d02 | 621 | |
c1977dbe | 622 | m = top_var_list (new_data); |
b4f45d02 | 623 | if (m != MATCH_YES) |
624 | goto cleanup; | |
625 | ||
10e78772 | 626 | if (new_data->var->iter.var |
627 | && new_data->var->iter.var->ts.type == BT_INTEGER | |
628 | && new_data->var->iter.var->symtree->n.sym->attr.implied_index == 1 | |
629 | && new_data->var->list | |
630 | && new_data->var->list->expr | |
631 | && new_data->var->list->expr->ts.type == BT_CHARACTER | |
632 | && new_data->var->list->expr->ref | |
633 | && new_data->var->list->expr->ref->type == REF_SUBSTRING) | |
634 | { | |
635 | gfc_error ("Invalid substring in data-implied-do at %L in DATA " | |
636 | "statement", &new_data->var->list->expr->where); | |
637 | goto cleanup; | |
638 | } | |
639 | ||
1d782298 | 640 | /* Check for an entity with an allocatable component, which is not |
641 | allowed. */ | |
642 | e = new_data->var->expr; | |
643 | if (e) | |
644 | { | |
645 | bool invalid; | |
646 | ||
647 | invalid = false; | |
15cbe83d | 648 | for (ref = e->ref; ref; ref = ref->next) |
1d782298 | 649 | if ((ref->type == REF_COMPONENT |
650 | && ref->u.c.component->attr.allocatable) | |
651 | || (ref->type == REF_ARRAY | |
652 | && e->symtree->n.sym->attr.pointer != 1 | |
653 | && ref->u.ar.as && ref->u.ar.as->type == AS_DEFERRED)) | |
654 | invalid = true; | |
655 | ||
656 | if (invalid) | |
657 | { | |
658 | gfc_error ("Allocatable component or deferred-shaped array " | |
659 | "near %C in DATA statement"); | |
660 | goto cleanup; | |
661 | } | |
15cbe83d | 662 | |
663 | /* F2008:C567 (R536) A data-i-do-object or a variable that appears | |
664 | as a data-stmt-object shall not be an object designator in which | |
665 | a pointer appears other than as the entire rightmost part-ref. */ | |
666 | ref = e->ref; | |
667 | if (e->symtree->n.sym->ts.type == BT_DERIVED | |
668 | && e->symtree->n.sym->attr.pointer | |
669 | && ref->type == REF_COMPONENT) | |
670 | goto partref; | |
671 | ||
672 | for (; ref; ref = ref->next) | |
673 | if (ref->type == REF_COMPONENT | |
674 | && ref->u.c.component->attr.pointer | |
675 | && ref->next) | |
676 | goto partref; | |
1d782298 | 677 | } |
678 | ||
c1977dbe | 679 | m = top_val_list (new_data); |
b4f45d02 | 680 | if (m != MATCH_YES) |
681 | goto cleanup; | |
682 | ||
c1977dbe | 683 | new_data->next = gfc_current_ns->data; |
684 | gfc_current_ns->data = new_data; | |
b4f45d02 | 685 | |
686 | if (gfc_match_eos () == MATCH_YES) | |
687 | break; | |
688 | ||
689 | gfc_match_char (','); /* Optional comma */ | |
690 | } | |
691 | ||
cbbac028 | 692 | set_in_match_data (false); |
1bfea7e8 | 693 | |
b4f45d02 | 694 | if (gfc_pure (NULL)) |
695 | { | |
696 | gfc_error ("DATA statement at %C is not allowed in a PURE procedure"); | |
697 | return MATCH_ERROR; | |
698 | } | |
c77badf3 | 699 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
8b0a2e85 | 700 | |
b4f45d02 | 701 | return MATCH_YES; |
702 | ||
15cbe83d | 703 | partref: |
704 | ||
705 | gfc_error ("part-ref with pointer attribute near %L is not " | |
706 | "rightmost part-ref of data-stmt-object", | |
707 | &e->where); | |
708 | ||
b4f45d02 | 709 | cleanup: |
cbbac028 | 710 | set_in_match_data (false); |
c1977dbe | 711 | gfc_free_data (new_data); |
b4f45d02 | 712 | return MATCH_ERROR; |
713 | } | |
714 | ||
715 | ||
716 | /************************ Declaration statements *********************/ | |
717 | ||
e97ac7c0 | 718 | |
d7cd448a | 719 | /* Like gfc_match_init_expr, but matches a 'clist' (old-style initialization |
720 | list). The difference here is the expression is a list of constants | |
7d7125df | 721 | and is surrounded by '/'. |
d7cd448a | 722 | The typespec ts must match the typespec of the variable which the |
723 | clist is initializing. | |
7d7125df | 724 | The arrayspec tells whether this should match a list of constants |
d7cd448a | 725 | corresponding to array elements or a scalar (as == NULL). */ |
726 | ||
727 | static match | |
728 | match_clist_expr (gfc_expr **result, gfc_typespec *ts, gfc_array_spec *as) | |
729 | { | |
730 | gfc_constructor_base array_head = NULL; | |
731 | gfc_expr *expr = NULL; | |
d9c759d9 | 732 | match m = MATCH_ERROR; |
d7cd448a | 733 | locus where; |
f1e4e020 | 734 | mpz_t repeat, cons_size, as_size; |
d7cd448a | 735 | bool scalar; |
736 | int cmp; | |
737 | ||
738 | gcc_assert (ts); | |
739 | ||
d7cd448a | 740 | /* We have already matched '/' - now look for a constant list, as with |
741 | top_val_list from decl.c, but append the result to an array. */ | |
742 | if (gfc_match ("/") == MATCH_YES) | |
743 | { | |
744 | gfc_error ("Empty old style initializer list at %C"); | |
d9c759d9 | 745 | return MATCH_ERROR; |
d7cd448a | 746 | } |
747 | ||
748 | where = gfc_current_locus; | |
d9c759d9 | 749 | scalar = !as || !as->rank; |
750 | ||
751 | if (!scalar && !spec_size (as, &as_size)) | |
752 | { | |
753 | gfc_error ("Array in initializer list at %L must have an explicit shape", | |
754 | as->type == AS_EXPLICIT ? &as->upper[0]->where : &where); | |
755 | /* Nothing to cleanup yet. */ | |
756 | return MATCH_ERROR; | |
757 | } | |
758 | ||
759 | mpz_init_set_ui (repeat, 0); | |
760 | ||
d7cd448a | 761 | for (;;) |
762 | { | |
763 | m = match_data_constant (&expr); | |
764 | if (m != MATCH_YES) | |
765 | expr = NULL; /* match_data_constant may set expr to garbage */ | |
766 | if (m == MATCH_NO) | |
767 | goto syntax; | |
768 | if (m == MATCH_ERROR) | |
769 | goto cleanup; | |
770 | ||
771 | /* Found r in repeat spec r*c; look for the constant to repeat. */ | |
772 | if ( gfc_match_char ('*') == MATCH_YES) | |
773 | { | |
774 | if (scalar) | |
775 | { | |
776 | gfc_error ("Repeat spec invalid in scalar initializer at %C"); | |
777 | goto cleanup; | |
778 | } | |
779 | if (expr->ts.type != BT_INTEGER) | |
780 | { | |
781 | gfc_error ("Repeat spec must be an integer at %C"); | |
782 | goto cleanup; | |
783 | } | |
784 | mpz_set (repeat, expr->value.integer); | |
785 | gfc_free_expr (expr); | |
786 | expr = NULL; | |
787 | ||
788 | m = match_data_constant (&expr); | |
789 | if (m == MATCH_NO) | |
d9c759d9 | 790 | { |
791 | m = MATCH_ERROR; | |
792 | gfc_error ("Expected data constant after repeat spec at %C"); | |
793 | } | |
d7cd448a | 794 | if (m != MATCH_YES) |
795 | goto cleanup; | |
796 | } | |
797 | /* No repeat spec, we matched the data constant itself. */ | |
798 | else | |
799 | mpz_set_ui (repeat, 1); | |
800 | ||
801 | if (!scalar) | |
802 | { | |
803 | /* Add the constant initializer as many times as repeated. */ | |
804 | for (; mpz_cmp_ui (repeat, 0) > 0; mpz_sub_ui (repeat, repeat, 1)) | |
805 | { | |
806 | /* Make sure types of elements match */ | |
807 | if(ts && !gfc_compare_types (&expr->ts, ts) | |
808 | && !gfc_convert_type (expr, ts, 1)) | |
809 | goto cleanup; | |
810 | ||
811 | gfc_constructor_append_expr (&array_head, | |
812 | gfc_copy_expr (expr), &gfc_current_locus); | |
813 | } | |
814 | ||
815 | gfc_free_expr (expr); | |
816 | expr = NULL; | |
817 | } | |
818 | ||
819 | /* For scalar initializers quit after one element. */ | |
820 | else | |
821 | { | |
822 | if(gfc_match_char ('/') != MATCH_YES) | |
823 | { | |
824 | gfc_error ("End of scalar initializer expected at %C"); | |
825 | goto cleanup; | |
826 | } | |
827 | break; | |
828 | } | |
829 | ||
830 | if (gfc_match_char ('/') == MATCH_YES) | |
831 | break; | |
832 | if (gfc_match_char (',') == MATCH_NO) | |
833 | goto syntax; | |
834 | } | |
835 | ||
d9c759d9 | 836 | /* If we break early from here out, we encountered an error. */ |
837 | m = MATCH_ERROR; | |
838 | ||
d7cd448a | 839 | /* Set up expr as an array constructor. */ |
840 | if (!scalar) | |
841 | { | |
842 | expr = gfc_get_array_expr (ts->type, ts->kind, &where); | |
843 | expr->ts = *ts; | |
844 | expr->value.constructor = array_head; | |
845 | ||
846 | expr->rank = as->rank; | |
847 | expr->shape = gfc_get_shape (expr->rank); | |
848 | ||
f1e4e020 | 849 | /* Validate sizes. We built expr ourselves, so cons_size will be |
850 | constant (we fail above for non-constant expressions). | |
d9c759d9 | 851 | We still need to verify that the sizes match. */ |
f1e4e020 | 852 | gcc_assert (gfc_array_size (expr, &cons_size)); |
d9c759d9 | 853 | cmp = mpz_cmp (cons_size, as_size); |
854 | if (cmp < 0) | |
855 | gfc_error ("Not enough elements in array initializer at %C"); | |
856 | else if (cmp > 0) | |
857 | gfc_error ("Too many elements in array initializer at %C"); | |
f1e4e020 | 858 | mpz_clear (cons_size); |
d7cd448a | 859 | if (cmp) |
f1e4e020 | 860 | goto cleanup; |
d7cd448a | 861 | } |
862 | ||
863 | /* Make sure scalar types match. */ | |
864 | else if (!gfc_compare_types (&expr->ts, ts) | |
865 | && !gfc_convert_type (expr, ts, 1)) | |
866 | goto cleanup; | |
867 | ||
868 | if (expr->ts.u.cl) | |
869 | expr->ts.u.cl->length_from_typespec = 1; | |
870 | ||
871 | *result = expr; | |
d9c759d9 | 872 | m = MATCH_YES; |
873 | goto done; | |
d7cd448a | 874 | |
875 | syntax: | |
d9c759d9 | 876 | m = MATCH_ERROR; |
d7cd448a | 877 | gfc_error ("Syntax error in old style initializer list at %C"); |
878 | ||
879 | cleanup: | |
880 | if (expr) | |
881 | expr->value.constructor = NULL; | |
882 | gfc_free_expr (expr); | |
883 | gfc_constructor_free (array_head); | |
d9c759d9 | 884 | |
885 | done: | |
d7cd448a | 886 | mpz_clear (repeat); |
d9c759d9 | 887 | if (!scalar) |
888 | mpz_clear (as_size); | |
889 | return m; | |
d7cd448a | 890 | } |
891 | ||
892 | ||
df084314 | 893 | /* Auxiliary function to merge DIMENSION and CODIMENSION array specs. */ |
e97ac7c0 | 894 | |
60e19868 | 895 | static bool |
e97ac7c0 | 896 | merge_array_spec (gfc_array_spec *from, gfc_array_spec *to, bool copy) |
897 | { | |
a83e9b8b | 898 | int i, j; |
e97ac7c0 | 899 | |
9b58b4c7 | 900 | if ((from->type == AS_ASSUMED_RANK && to->corank) |
901 | || (to->type == AS_ASSUMED_RANK && from->corank)) | |
902 | { | |
903 | gfc_error ("The assumed-rank array at %C shall not have a codimension"); | |
60e19868 | 904 | return false; |
9b58b4c7 | 905 | } |
f00f6dd6 | 906 | |
e97ac7c0 | 907 | if (to->rank == 0 && from->rank > 0) |
908 | { | |
909 | to->rank = from->rank; | |
910 | to->type = from->type; | |
911 | to->cray_pointee = from->cray_pointee; | |
912 | to->cp_was_assumed = from->cp_was_assumed; | |
913 | ||
914 | for (i = 0; i < to->corank; i++) | |
915 | { | |
a83e9b8b | 916 | /* Do not exceed the limits on lower[] and upper[]. gfortran |
917 | cleans up elsewhere. */ | |
918 | j = from->rank + i; | |
919 | if (j >= GFC_MAX_DIMENSIONS) | |
920 | break; | |
921 | ||
922 | to->lower[j] = to->lower[i]; | |
923 | to->upper[j] = to->upper[i]; | |
e97ac7c0 | 924 | } |
925 | for (i = 0; i < from->rank; i++) | |
926 | { | |
927 | if (copy) | |
928 | { | |
929 | to->lower[i] = gfc_copy_expr (from->lower[i]); | |
930 | to->upper[i] = gfc_copy_expr (from->upper[i]); | |
931 | } | |
932 | else | |
933 | { | |
934 | to->lower[i] = from->lower[i]; | |
935 | to->upper[i] = from->upper[i]; | |
936 | } | |
937 | } | |
938 | } | |
939 | else if (to->corank == 0 && from->corank > 0) | |
940 | { | |
941 | to->corank = from->corank; | |
942 | to->cotype = from->cotype; | |
943 | ||
944 | for (i = 0; i < from->corank; i++) | |
945 | { | |
a83e9b8b | 946 | /* Do not exceed the limits on lower[] and upper[]. gfortran |
947 | cleans up elsewhere. */ | |
948 | j = to->rank + i; | |
949 | if (j >= GFC_MAX_DIMENSIONS) | |
950 | break; | |
951 | ||
e97ac7c0 | 952 | if (copy) |
953 | { | |
a83e9b8b | 954 | to->lower[j] = gfc_copy_expr (from->lower[i]); |
955 | to->upper[j] = gfc_copy_expr (from->upper[i]); | |
e97ac7c0 | 956 | } |
957 | else | |
958 | { | |
a83e9b8b | 959 | to->lower[j] = from->lower[i]; |
960 | to->upper[j] = from->upper[i]; | |
e97ac7c0 | 961 | } |
962 | } | |
963 | } | |
9b58b4c7 | 964 | |
ca5fc2b6 | 965 | if (to->rank + to->corank > GFC_MAX_DIMENSIONS) |
a83e9b8b | 966 | { |
967 | gfc_error ("Sum of array rank %d and corank %d at %C exceeds maximum " | |
968 | "allowed dimensions of %d", | |
969 | to->rank, to->corank, GFC_MAX_DIMENSIONS); | |
970 | to->corank = GFC_MAX_DIMENSIONS - to->rank; | |
971 | return false; | |
972 | } | |
60e19868 | 973 | return true; |
e97ac7c0 | 974 | } |
975 | ||
976 | ||
4ee9c684 | 977 | /* Match an intent specification. Since this can only happen after an |
978 | INTENT word, a legal intent-spec must follow. */ | |
979 | ||
980 | static sym_intent | |
981 | match_intent_spec (void) | |
982 | { | |
983 | ||
984 | if (gfc_match (" ( in out )") == MATCH_YES) | |
985 | return INTENT_INOUT; | |
986 | if (gfc_match (" ( in )") == MATCH_YES) | |
987 | return INTENT_IN; | |
988 | if (gfc_match (" ( out )") == MATCH_YES) | |
989 | return INTENT_OUT; | |
990 | ||
991 | gfc_error ("Bad INTENT specification at %C"); | |
992 | return INTENT_UNKNOWN; | |
993 | } | |
994 | ||
995 | ||
996 | /* Matches a character length specification, which is either a | |
3e715c81 | 997 | specification expression, '*', or ':'. */ |
4ee9c684 | 998 | |
999 | static match | |
3e715c81 | 1000 | char_len_param_value (gfc_expr **expr, bool *deferred) |
4ee9c684 | 1001 | { |
294d58d3 | 1002 | match m; |
1003 | ||
3e715c81 | 1004 | *expr = NULL; |
1005 | *deferred = false; | |
1006 | ||
4ee9c684 | 1007 | if (gfc_match_char ('*') == MATCH_YES) |
3e715c81 | 1008 | return MATCH_YES; |
1009 | ||
1010 | if (gfc_match_char (':') == MATCH_YES) | |
4ee9c684 | 1011 | { |
34bf7ba5 | 1012 | if (!gfc_notify_std (GFC_STD_F2003, "deferred type parameter at %C")) |
3e715c81 | 1013 | return MATCH_ERROR; |
1014 | ||
1015 | *deferred = true; | |
1016 | ||
4ee9c684 | 1017 | return MATCH_YES; |
1018 | } | |
1019 | ||
294d58d3 | 1020 | m = gfc_match_expr (expr); |
40de255b | 1021 | |
34bf7ba5 | 1022 | if (m == MATCH_NO || m == MATCH_ERROR) |
1023 | return m; | |
1024 | ||
1025 | if (!gfc_expr_check_typed (*expr, gfc_current_ns, false)) | |
40de255b | 1026 | return MATCH_ERROR; |
1027 | ||
34bf7ba5 | 1028 | if ((*expr)->expr_type == EXPR_FUNCTION) |
294d58d3 | 1029 | { |
9c5a8acc | 1030 | if ((*expr)->ts.type == BT_INTEGER |
1031 | || ((*expr)->ts.type == BT_UNKNOWN | |
1032 | && strcmp((*expr)->symtree->name, "null") != 0)) | |
1033 | return MATCH_YES; | |
1034 | ||
1035 | goto syntax; | |
1036 | } | |
1037 | else if ((*expr)->expr_type == EXPR_CONSTANT) | |
1038 | { | |
1039 | /* F2008, 4.4.3.1: The length is a type parameter; its kind is | |
1040 | processor dependent and its value is greater than or equal to zero. | |
1041 | F2008, 4.4.3.2: If the character length parameter value evaluates | |
1042 | to a negative value, the length of character entities declared | |
1043 | is zero. */ | |
1044 | ||
1045 | if ((*expr)->ts.type == BT_INTEGER) | |
294d58d3 | 1046 | { |
9c5a8acc | 1047 | if (mpz_cmp_si ((*expr)->value.integer, 0) < 0) |
1048 | mpz_set_si ((*expr)->value.integer, 0); | |
294d58d3 | 1049 | } |
9c5a8acc | 1050 | else |
1051 | goto syntax; | |
294d58d3 | 1052 | } |
9c5a8acc | 1053 | else if ((*expr)->expr_type == EXPR_ARRAY) |
1054 | goto syntax; | |
1055 | else if ((*expr)->expr_type == EXPR_VARIABLE) | |
1056 | { | |
165b422e | 1057 | bool t; |
9c5a8acc | 1058 | gfc_expr *e; |
1059 | ||
1060 | e = gfc_copy_expr (*expr); | |
1061 | ||
1062 | /* This catches the invalid code "[character(m(2:3)) :: 'x', 'y']", | |
1063 | which causes an ICE if gfc_reduce_init_expr() is called. */ | |
47977082 | 1064 | if (e->ref && e->ref->type == REF_ARRAY |
1065 | && e->ref->u.ar.type == AR_UNKNOWN | |
9c5a8acc | 1066 | && e->ref->u.ar.dimen_type[0] == DIMEN_RANGE) |
1067 | goto syntax; | |
1068 | ||
165b422e | 1069 | t = gfc_reduce_init_expr (e); |
1070 | ||
42f172d0 | 1071 | if (!t && e->ts.type == BT_UNKNOWN |
1072 | && e->symtree->n.sym->attr.untyped == 1 | |
a246a22d | 1073 | && (flag_implicit_none |
1074 | || e->symtree->n.sym->ns->seen_implicit_none == 1 | |
42f172d0 | 1075 | || e->symtree->n.sym->ns->parent->seen_implicit_none == 1)) |
165b422e | 1076 | { |
1077 | gfc_free_expr (e); | |
1078 | goto syntax; | |
1079 | } | |
34bf7ba5 | 1080 | |
47977082 | 1081 | if ((e->ref && e->ref->type == REF_ARRAY |
76e207a9 | 1082 | && e->ref->u.ar.type != AR_ELEMENT) |
9c5a8acc | 1083 | || (!e->ref && e->expr_type == EXPR_ARRAY)) |
1084 | { | |
1085 | gfc_free_expr (e); | |
1086 | goto syntax; | |
1087 | } | |
1088 | ||
1089 | gfc_free_expr (e); | |
1090 | } | |
34bf7ba5 | 1091 | |
294d58d3 | 1092 | return m; |
1093 | ||
1094 | syntax: | |
9c5a8acc | 1095 | gfc_error ("Scalar INTEGER expression expected at %L", &(*expr)->where); |
294d58d3 | 1096 | return MATCH_ERROR; |
4ee9c684 | 1097 | } |
1098 | ||
1099 | ||
1100 | /* A character length is a '*' followed by a literal integer or a | |
1101 | char_len_param_value in parenthesis. */ | |
1102 | ||
1103 | static match | |
ae0426ce | 1104 | match_char_length (gfc_expr **expr, bool *deferred, bool obsolescent_check) |
4ee9c684 | 1105 | { |
3bd3b616 | 1106 | int length; |
4ee9c684 | 1107 | match m; |
1108 | ||
8db94b3b | 1109 | *deferred = false; |
4ee9c684 | 1110 | m = gfc_match_char ('*'); |
1111 | if (m != MATCH_YES) | |
1112 | return m; | |
1113 | ||
3bd3b616 | 1114 | m = gfc_match_small_literal_int (&length, NULL); |
4ee9c684 | 1115 | if (m == MATCH_ERROR) |
1116 | return m; | |
1117 | ||
1118 | if (m == MATCH_YES) | |
1119 | { | |
ae0426ce | 1120 | if (obsolescent_check |
60e19868 | 1121 | && !gfc_notify_std (GFC_STD_F95_OBS, "Old-style character length at %C")) |
8e9b41f0 | 1122 | return MATCH_ERROR; |
9f4d9f83 | 1123 | *expr = gfc_get_int_expr (gfc_charlen_int_kind, NULL, length); |
4ee9c684 | 1124 | return m; |
1125 | } | |
1126 | ||
1127 | if (gfc_match_char ('(') == MATCH_NO) | |
1128 | goto syntax; | |
1129 | ||
3e715c81 | 1130 | m = char_len_param_value (expr, deferred); |
077932f9 | 1131 | if (m != MATCH_YES && gfc_matching_function) |
1132 | { | |
1133 | gfc_undo_symbols (); | |
1134 | m = MATCH_YES; | |
1135 | } | |
1136 | ||
4ee9c684 | 1137 | if (m == MATCH_ERROR) |
1138 | return m; | |
1139 | if (m == MATCH_NO) | |
1140 | goto syntax; | |
1141 | ||
1142 | if (gfc_match_char (')') == MATCH_NO) | |
1143 | { | |
1144 | gfc_free_expr (*expr); | |
1145 | *expr = NULL; | |
1146 | goto syntax; | |
1147 | } | |
1148 | ||
1149 | return MATCH_YES; | |
1150 | ||
1151 | syntax: | |
1152 | gfc_error ("Syntax error in character length specification at %C"); | |
1153 | return MATCH_ERROR; | |
1154 | } | |
1155 | ||
1156 | ||
ee893be6 | 1157 | /* Special subroutine for finding a symbol. Check if the name is found |
1158 | in the current name space. If not, and we're compiling a function or | |
1159 | subroutine and the parent compilation unit is an interface, then check | |
1160 | to see if the name we've been given is the name of the interface | |
1161 | (located in another namespace). */ | |
4ee9c684 | 1162 | |
1163 | static int | |
36b0a1b0 | 1164 | find_special (const char *name, gfc_symbol **result, bool allow_subroutine) |
4ee9c684 | 1165 | { |
1166 | gfc_state_data *s; | |
36b0a1b0 | 1167 | gfc_symtree *st; |
ee893be6 | 1168 | int i; |
4ee9c684 | 1169 | |
36b0a1b0 | 1170 | i = gfc_get_sym_tree (name, NULL, &st, allow_subroutine); |
e14bee04 | 1171 | if (i == 0) |
36b0a1b0 | 1172 | { |
1173 | *result = st ? st->n.sym : NULL; | |
1174 | goto end; | |
1175 | } | |
e14bee04 | 1176 | |
4ee9c684 | 1177 | if (gfc_current_state () != COMP_SUBROUTINE |
1178 | && gfc_current_state () != COMP_FUNCTION) | |
ee893be6 | 1179 | goto end; |
4ee9c684 | 1180 | |
1181 | s = gfc_state_stack->previous; | |
1182 | if (s == NULL) | |
ee893be6 | 1183 | goto end; |
4ee9c684 | 1184 | |
1185 | if (s->state != COMP_INTERFACE) | |
ee893be6 | 1186 | goto end; |
4ee9c684 | 1187 | if (s->sym == NULL) |
f6d0e37a | 1188 | goto end; /* Nameless interface. */ |
4ee9c684 | 1189 | |
1190 | if (strcmp (name, s->sym->name) == 0) | |
1191 | { | |
1192 | *result = s->sym; | |
1193 | return 0; | |
1194 | } | |
1195 | ||
ee893be6 | 1196 | end: |
1197 | return i; | |
4ee9c684 | 1198 | } |
1199 | ||
1200 | ||
1201 | /* Special subroutine for getting a symbol node associated with a | |
1202 | procedure name, used in SUBROUTINE and FUNCTION statements. The | |
1203 | symbol is created in the parent using with symtree node in the | |
1204 | child unit pointing to the symbol. If the current namespace has no | |
1205 | parent, then the symbol is just created in the current unit. */ | |
1206 | ||
1207 | static int | |
1a9745d2 | 1208 | get_proc_name (const char *name, gfc_symbol **result, bool module_fcn_entry) |
4ee9c684 | 1209 | { |
1210 | gfc_symtree *st; | |
1211 | gfc_symbol *sym; | |
2ddb8ed9 | 1212 | int rc = 0; |
4ee9c684 | 1213 | |
d77f260f | 1214 | /* Module functions have to be left in their own namespace because |
1215 | they have potentially (almost certainly!) already been referenced. | |
1216 | In this sense, they are rather like external functions. This is | |
1217 | fixed up in resolve.c(resolve_entries), where the symbol name- | |
1218 | space is set to point to the master function, so that the fake | |
1219 | result mechanism can work. */ | |
1220 | if (module_fcn_entry) | |
861d824f | 1221 | { |
1222 | /* Present if entry is declared to be a module procedure. */ | |
1223 | rc = gfc_find_symbol (name, gfc_current_ns->parent, 0, result); | |
c6a05992 | 1224 | |
861d824f | 1225 | if (*result == NULL) |
1226 | rc = gfc_get_symbol (name, NULL, result); | |
a78f714d | 1227 | else if (!gfc_get_symbol (name, NULL, &sym) && sym |
c6a05992 | 1228 | && (*result)->ts.type == BT_UNKNOWN |
1229 | && sym->attr.flavor == FL_UNKNOWN) | |
1230 | /* Pick up the typespec for the entry, if declared in the function | |
1231 | body. Note that this symbol is FL_UNKNOWN because it will | |
1232 | only have appeared in a type declaration. The local symtree | |
1233 | is set to point to the module symbol and a unique symtree | |
1234 | to the local version. This latter ensures a correct clearing | |
1235 | of the symbols. */ | |
a78f714d | 1236 | { |
1237 | /* If the ENTRY proceeds its specification, we need to ensure | |
1238 | that this does not raise a "has no IMPLICIT type" error. */ | |
1239 | if (sym->ts.type == BT_UNKNOWN) | |
2168078b | 1240 | sym->attr.untyped = 1; |
a78f714d | 1241 | |
2168078b | 1242 | (*result)->ts = sym->ts; |
a78f714d | 1243 | |
1244 | /* Put the symbol in the procedure namespace so that, should | |
69b1505f | 1245 | the ENTRY precede its specification, the specification |
a78f714d | 1246 | can be applied. */ |
1247 | (*result)->ns = gfc_current_ns; | |
1248 | ||
1249 | gfc_find_sym_tree (name, gfc_current_ns, 0, &st); | |
1250 | st->n.sym = *result; | |
1251 | st = gfc_get_unique_symtree (gfc_current_ns); | |
c77c84dd | 1252 | sym->refs++; |
a78f714d | 1253 | st->n.sym = sym; |
1254 | } | |
861d824f | 1255 | } |
858f9894 | 1256 | else |
1257 | rc = gfc_get_symbol (name, gfc_current_ns->parent, result); | |
4ee9c684 | 1258 | |
2ddb8ed9 | 1259 | if (rc) |
1260 | return rc; | |
1261 | ||
858f9894 | 1262 | sym = *result; |
97323566 | 1263 | if (sym->attr.proc == PROC_ST_FUNCTION) |
1264 | return rc; | |
4ee9c684 | 1265 | |
b229bdf2 | 1266 | if (sym->attr.module_procedure && sym->attr.if_source == IFSRC_IFBODY) |
4b8eb6ca | 1267 | { |
1268 | /* Create a partially populated interface symbol to carry the | |
1269 | characteristics of the procedure and the result. */ | |
dee7f6d1 | 1270 | sym->tlink = gfc_new_symbol (name, sym->ns); |
b229bdf2 | 1271 | gfc_add_type (sym->tlink, &(sym->ts), &gfc_current_locus); |
dee7f6d1 | 1272 | gfc_copy_attr (&sym->tlink->attr, &sym->attr, NULL); |
4b8eb6ca | 1273 | if (sym->attr.dimension) |
dee7f6d1 | 1274 | sym->tlink->as = gfc_copy_array_spec (sym->as); |
4b8eb6ca | 1275 | |
1276 | /* Ideally, at this point, a copy would be made of the formal | |
1277 | arguments and their namespace. However, this does not appear | |
1278 | to be necessary, albeit at the expense of not being able to | |
1279 | use gfc_compare_interfaces directly. */ | |
1280 | ||
1281 | if (sym->result && sym->result != sym) | |
1282 | { | |
dee7f6d1 | 1283 | sym->tlink->result = sym->result; |
4b8eb6ca | 1284 | sym->result = NULL; |
1285 | } | |
1286 | else if (sym->result) | |
1287 | { | |
dee7f6d1 | 1288 | sym->tlink->result = sym->tlink; |
4b8eb6ca | 1289 | } |
1290 | } | |
1291 | else if (sym && !sym->gfc_new | |
1292 | && gfc_current_state () != COMP_INTERFACE) | |
858f9894 | 1293 | { |
16f49153 | 1294 | /* Trap another encompassed procedure with the same name. All |
1295 | these conditions are necessary to avoid picking up an entry | |
1296 | whose name clashes with that of the encompassing procedure; | |
c77c84dd | 1297 | this is handled using gsymbols to register unique, globally |
16f49153 | 1298 | accessible names. */ |
858f9894 | 1299 | if (sym->attr.flavor != 0 |
1a9745d2 | 1300 | && sym->attr.proc != 0 |
05b3eb93 | 1301 | && (sym->attr.subroutine || sym->attr.function || sym->attr.entry) |
1a9745d2 | 1302 | && sym->attr.if_source != IFSRC_UNKNOWN) |
33994aeb | 1303 | { |
1304 | gfc_error_now ("Procedure %qs at %C is already defined at %L", | |
1305 | name, &sym->declared_at); | |
1306 | return true; | |
1307 | } | |
05b3eb93 | 1308 | if (sym->attr.flavor != 0 |
1309 | && sym->attr.entry && sym->attr.if_source != IFSRC_UNKNOWN) | |
33994aeb | 1310 | { |
1311 | gfc_error_now ("Procedure %qs at %C is already defined at %L", | |
1312 | name, &sym->declared_at); | |
1313 | return true; | |
1314 | } | |
05b3eb93 | 1315 | |
3eb3b784 | 1316 | if (sym->attr.external && sym->attr.procedure |
1317 | && gfc_current_state () == COMP_CONTAINS) | |
33994aeb | 1318 | { |
1319 | gfc_error_now ("Contained procedure %qs at %C clashes with " | |
1320 | "procedure defined at %L", | |
1321 | name, &sym->declared_at); | |
1322 | return true; | |
1323 | } | |
3eb3b784 | 1324 | |
5720fd2f | 1325 | /* Trap a procedure with a name the same as interface in the |
1326 | encompassing scope. */ | |
1327 | if (sym->attr.generic != 0 | |
db697236 | 1328 | && (sym->attr.subroutine || sym->attr.function) |
1329 | && !sym->attr.mod_proc) | |
33994aeb | 1330 | { |
1331 | gfc_error_now ("Name %qs at %C is already defined" | |
1332 | " as a generic interface at %L", | |
1333 | name, &sym->declared_at); | |
1334 | return true; | |
1335 | } | |
5720fd2f | 1336 | |
858f9894 | 1337 | /* Trap declarations of attributes in encompassing scope. The |
1338 | signature for this is that ts.kind is set. Legitimate | |
1339 | references only set ts.type. */ | |
1340 | if (sym->ts.kind != 0 | |
1a9745d2 | 1341 | && !sym->attr.implicit_type |
1342 | && sym->attr.proc == 0 | |
1343 | && gfc_current_ns->parent != NULL | |
1344 | && sym->attr.access == 0 | |
1345 | && !module_fcn_entry) | |
33994aeb | 1346 | { |
1347 | gfc_error_now ("Procedure %qs at %C has an explicit interface " | |
b229bdf2 | 1348 | "from a previous declaration", name); |
33994aeb | 1349 | return true; |
1350 | } | |
b229bdf2 | 1351 | } |
1352 | ||
dc38f1d9 | 1353 | /* C1246 (R1225) MODULE shall appear only in the function-stmt or |
1354 | subroutine-stmt of a module subprogram or of a nonabstract interface | |
1355 | body that is declared in the scoping unit of a module or submodule. */ | |
1356 | if (sym->attr.external | |
1357 | && (sym->attr.subroutine || sym->attr.function) | |
1358 | && sym->attr.if_source == IFSRC_IFBODY | |
1359 | && !current_attr.module_procedure | |
1360 | && sym->attr.proc == PROC_MODULE | |
1361 | && gfc_state_stack->state == COMP_CONTAINS) | |
33994aeb | 1362 | { |
1363 | gfc_error_now ("Procedure %qs defined in interface body at %L " | |
1364 | "clashes with internal procedure defined at %C", | |
1365 | name, &sym->declared_at); | |
1366 | return true; | |
1367 | } | |
dc38f1d9 | 1368 | |
1369 | if (sym && !sym->gfc_new | |
1370 | && sym->attr.flavor != FL_UNKNOWN | |
1371 | && sym->attr.referenced == 0 && sym->attr.subroutine == 1 | |
1372 | && gfc_state_stack->state == COMP_CONTAINS | |
1373 | && gfc_state_stack->previous->state == COMP_SUBROUTINE) | |
33994aeb | 1374 | { |
1375 | gfc_error_now ("Procedure %qs at %C is already defined at %L", | |
1376 | name, &sym->declared_at); | |
1377 | return true; | |
1378 | } | |
858f9894 | 1379 | |
1380 | if (gfc_current_ns->parent == NULL || *result == NULL) | |
1381 | return rc; | |
4ee9c684 | 1382 | |
d77f260f | 1383 | /* Module function entries will already have a symtree in |
1384 | the current namespace but will need one at module level. */ | |
1385 | if (module_fcn_entry) | |
861d824f | 1386 | { |
1387 | /* Present if entry is declared to be a module procedure. */ | |
1388 | rc = gfc_find_sym_tree (name, gfc_current_ns->parent, 0, &st); | |
1389 | if (st == NULL) | |
1390 | st = gfc_new_symtree (&gfc_current_ns->parent->sym_root, name); | |
1391 | } | |
d77f260f | 1392 | else |
1393 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); | |
4ee9c684 | 1394 | |
4ee9c684 | 1395 | st->n.sym = sym; |
1396 | sym->refs++; | |
1397 | ||
f6d0e37a | 1398 | /* See if the procedure should be a module procedure. */ |
4ee9c684 | 1399 | |
d77f260f | 1400 | if (((sym->ns->proc_name != NULL |
b229bdf2 | 1401 | && sym->ns->proc_name->attr.flavor == FL_MODULE |
1402 | && sym->attr.proc != PROC_MODULE) | |
1403 | || (module_fcn_entry && sym->attr.proc != PROC_MODULE)) | |
1404 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) | |
4ee9c684 | 1405 | rc = 2; |
1406 | ||
1407 | return rc; | |
1408 | } | |
1409 | ||
1410 | ||
c5d33754 | 1411 | /* Verify that the given symbol representing a parameter is C |
1412 | interoperable, by checking to see if it was marked as such after | |
1413 | its declaration. If the given symbol is not interoperable, a | |
1414 | warning is reported, thus removing the need to return the status to | |
1415 | the calling function. The standard does not require the user use | |
1416 | one of the iso_c_binding named constants to declare an | |
1417 | interoperable parameter, but we can't be sure if the param is C | |
1418 | interop or not if the user doesn't. For example, integer(4) may be | |
1419 | legal Fortran, but doesn't have meaning in C. It may interop with | |
1420 | a number of the C types, which causes a problem because the | |
1421 | compiler can't know which one. This code is almost certainly not | |
1422 | portable, and the user will get what they deserve if the C type | |
1423 | across platforms isn't always interoperable with integer(4). If | |
1424 | the user had used something like integer(c_int) or integer(c_long), | |
1425 | the compiler could have automatically handled the varying sizes | |
1426 | across platforms. */ | |
1427 | ||
60e19868 | 1428 | bool |
2564c57a | 1429 | gfc_verify_c_interop_param (gfc_symbol *sym) |
c5d33754 | 1430 | { |
1431 | int is_c_interop = 0; | |
60e19868 | 1432 | bool retval = true; |
c5d33754 | 1433 | |
1434 | /* We check implicitly typed variables in symbol.c:gfc_set_default_type(). | |
1435 | Don't repeat the checks here. */ | |
1436 | if (sym->attr.implicit_type) | |
60e19868 | 1437 | return true; |
8db94b3b | 1438 | |
c5d33754 | 1439 | /* For subroutines or functions that are passed to a BIND(C) procedure, |
1440 | they're interoperable if they're BIND(C) and their params are all | |
1441 | interoperable. */ | |
1442 | if (sym->attr.flavor == FL_PROCEDURE) | |
1443 | { | |
1444 | if (sym->attr.is_bind_c == 0) | |
1445 | { | |
bf79c656 | 1446 | gfc_error_now ("Procedure %qs at %L must have the BIND(C) " |
1447 | "attribute to be C interoperable", sym->name, | |
1448 | &(sym->declared_at)); | |
60e19868 | 1449 | return false; |
c5d33754 | 1450 | } |
1451 | else | |
1452 | { | |
1453 | if (sym->attr.is_c_interop == 1) | |
1454 | /* We've already checked this procedure; don't check it again. */ | |
60e19868 | 1455 | return true; |
c5d33754 | 1456 | else |
1457 | return verify_bind_c_sym (sym, &(sym->ts), sym->attr.in_common, | |
1458 | sym->common_block); | |
1459 | } | |
1460 | } | |
8db94b3b | 1461 | |
c5d33754 | 1462 | /* See if we've stored a reference to a procedure that owns sym. */ |
1463 | if (sym->ns != NULL && sym->ns->proc_name != NULL) | |
1464 | { | |
1465 | if (sym->ns->proc_name->attr.is_bind_c == 1) | |
1466 | { | |
60e19868 | 1467 | is_c_interop = (gfc_verify_c_interop(&(sym->ts)) ? 1 : 0); |
c5d33754 | 1468 | |
1469 | if (is_c_interop != 1) | |
1470 | { | |
1471 | /* Make personalized messages to give better feedback. */ | |
1472 | if (sym->ts.type == BT_DERIVED) | |
716da296 | 1473 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1474 | "BIND(C) procedure %qs but is not C interoperable " | |
1475 | "because derived type %qs is not C interoperable", | |
c5d33754 | 1476 | sym->name, &(sym->declared_at), |
8db94b3b | 1477 | sym->ns->proc_name->name, |
eeebe20b | 1478 | sym->ts.u.derived->name); |
2564c57a | 1479 | else if (sym->ts.type == BT_CLASS) |
716da296 | 1480 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1481 | "BIND(C) procedure %qs but is not C interoperable " | |
2564c57a | 1482 | "because it is polymorphic", |
1483 | sym->name, &(sym->declared_at), | |
1484 | sym->ns->proc_name->name); | |
bf79c656 | 1485 | else if (warn_c_binding_type) |
4166acc7 | 1486 | gfc_warning (OPT_Wc_binding_type, |
1487 | "Variable %qs at %L is a dummy argument of the " | |
1488 | "BIND(C) procedure %qs but may not be C " | |
c5d33754 | 1489 | "interoperable", |
1490 | sym->name, &(sym->declared_at), | |
1491 | sym->ns->proc_name->name); | |
1492 | } | |
e4eda3ec | 1493 | |
1494 | /* Character strings are only C interoperable if they have a | |
1495 | length of 1. */ | |
1496 | if (sym->ts.type == BT_CHARACTER) | |
1497 | { | |
eeebe20b | 1498 | gfc_charlen *cl = sym->ts.u.cl; |
e4eda3ec | 1499 | if (!cl || !cl->length || cl->length->expr_type != EXPR_CONSTANT |
1500 | || mpz_cmp_si (cl->length->value.integer, 1) != 0) | |
1501 | { | |
716da296 | 1502 | gfc_error ("Character argument %qs at %L " |
e4eda3ec | 1503 | "must be length 1 because " |
716da296 | 1504 | "procedure %qs is BIND(C)", |
e4eda3ec | 1505 | sym->name, &sym->declared_at, |
1506 | sym->ns->proc_name->name); | |
60e19868 | 1507 | retval = false; |
e4eda3ec | 1508 | } |
1509 | } | |
1510 | ||
c5d33754 | 1511 | /* We have to make sure that any param to a bind(c) routine does |
1512 | not have the allocatable, pointer, or optional attributes, | |
1513 | according to J3/04-007, section 5.1. */ | |
a435dc3a | 1514 | if (sym->attr.allocatable == 1 |
2e2156cf | 1515 | && !gfc_notify_std (GFC_STD_F2018, "Variable %qs at %L with " |
0d2b3c9c | 1516 | "ALLOCATABLE attribute in procedure %qs " |
a435dc3a | 1517 | "with BIND(C)", sym->name, |
1518 | &(sym->declared_at), | |
1519 | sym->ns->proc_name->name)) | |
1520 | retval = false; | |
1521 | ||
1522 | if (sym->attr.pointer == 1 | |
2e2156cf | 1523 | && !gfc_notify_std (GFC_STD_F2018, "Variable %qs at %L with " |
0d2b3c9c | 1524 | "POINTER attribute in procedure %qs " |
a435dc3a | 1525 | "with BIND(C)", sym->name, |
1526 | &(sym->declared_at), | |
1527 | sym->ns->proc_name->name)) | |
1528 | retval = false; | |
1529 | ||
1530 | if ((sym->attr.allocatable || sym->attr.pointer) && !sym->as) | |
c5d33754 | 1531 | { |
716da296 | 1532 | gfc_error ("Scalar variable %qs at %L with POINTER or " |
1533 | "ALLOCATABLE in procedure %qs with BIND(C) is not yet" | |
a435dc3a | 1534 | " supported", sym->name, &(sym->declared_at), |
c5d33754 | 1535 | sym->ns->proc_name->name); |
60e19868 | 1536 | retval = false; |
c5d33754 | 1537 | } |
1538 | ||
495e197c | 1539 | if (sym->attr.optional == 1 && sym->attr.value) |
c5d33754 | 1540 | { |
716da296 | 1541 | gfc_error ("Variable %qs at %L cannot have both the OPTIONAL " |
1542 | "and the VALUE attribute because procedure %qs " | |
495e197c | 1543 | "is BIND(C)", sym->name, &(sym->declared_at), |
c5d33754 | 1544 | sym->ns->proc_name->name); |
60e19868 | 1545 | retval = false; |
c5d33754 | 1546 | } |
495e197c | 1547 | else if (sym->attr.optional == 1 |
2e2156cf | 1548 | && !gfc_notify_std (GFC_STD_F2018, "Variable %qs " |
60e19868 | 1549 | "at %L with OPTIONAL attribute in " |
76e207a9 | 1550 | "procedure %qs which is BIND(C)", |
1551 | sym->name, &(sym->declared_at), | |
60e19868 | 1552 | sym->ns->proc_name->name)) |
1553 | retval = false; | |
c5d33754 | 1554 | |
1555 | /* Make sure that if it has the dimension attribute, that it is | |
9350ae4e | 1556 | either assumed size or explicit shape. Deferred shape is already |
1557 | covered by the pointer/allocatable attribute. */ | |
1558 | if (sym->as != NULL && sym->as->type == AS_ASSUMED_SHAPE | |
2e2156cf | 1559 | && !gfc_notify_std (GFC_STD_F2018, "Assumed-shape array %qs " |
60e19868 | 1560 | "at %L as dummy argument to the BIND(C) " |
2f7de6c1 | 1561 | "procedure %qs at %L", sym->name, |
76e207a9 | 1562 | &(sym->declared_at), |
1563 | sym->ns->proc_name->name, | |
60e19868 | 1564 | &(sym->ns->proc_name->declared_at))) |
1565 | retval = false; | |
c5d33754 | 1566 | } |
1567 | } | |
1568 | ||
1569 | return retval; | |
1570 | } | |
1571 | ||
1572 | ||
1de1b1a9 | 1573 | |
c5d33754 | 1574 | /* Function called by variable_decl() that adds a name to the symbol table. */ |
4ee9c684 | 1575 | |
60e19868 | 1576 | static bool |
3e715c81 | 1577 | build_sym (const char *name, gfc_charlen *cl, bool cl_deferred, |
1a9745d2 | 1578 | gfc_array_spec **as, locus *var_locus) |
4ee9c684 | 1579 | { |
1580 | symbol_attribute attr; | |
1581 | gfc_symbol *sym; | |
9b49c3cb | 1582 | int upper; |
7200bfee | 1583 | gfc_symtree *st; |
1584 | ||
1585 | /* Symbols in a submodule are host associated from the parent module or | |
1586 | submodules. Therefore, they can be overridden by declarations in the | |
1587 | submodule scope. Deal with this by attaching the existing symbol to | |
1588 | a new symtree and recycling the old symtree with a new symbol... */ | |
1589 | st = gfc_find_symtree (gfc_current_ns->sym_root, name); | |
1590 | if (st != NULL && gfc_state_stack->state == COMP_SUBMODULE | |
1591 | && st->n.sym != NULL | |
1592 | && st->n.sym->attr.host_assoc && st->n.sym->attr.used_in_submodule) | |
1593 | { | |
1594 | gfc_symtree *s = gfc_get_unique_symtree (gfc_current_ns); | |
1595 | s->n.sym = st->n.sym; | |
1596 | sym = gfc_new_symbol (name, gfc_current_ns); | |
4ee9c684 | 1597 | |
7200bfee | 1598 | |
1599 | st->n.sym = sym; | |
1600 | sym->refs++; | |
1601 | gfc_set_sym_referenced (sym); | |
1602 | } | |
1603 | /* ...Otherwise generate a new symtree and new symbol. */ | |
1604 | else if (gfc_get_symbol (name, NULL, &sym)) | |
60e19868 | 1605 | return false; |
4ee9c684 | 1606 | |
9b49c3cb | 1607 | /* Check if the name has already been defined as a type. The |
1608 | first letter of the symtree will be in upper case then. Of | |
1609 | course, this is only necessary if the upper case letter is | |
1610 | actually different. */ | |
1611 | ||
1612 | upper = TOUPPER(name[0]); | |
1613 | if (upper != name[0]) | |
1614 | { | |
1615 | char u_name[GFC_MAX_SYMBOL_LEN + 1]; | |
1616 | gfc_symtree *st; | |
9b49c3cb | 1617 | |
d8aad786 | 1618 | gcc_assert (strlen(name) <= GFC_MAX_SYMBOL_LEN); |
1619 | strcpy (u_name, name); | |
9b49c3cb | 1620 | u_name[0] = upper; |
1621 | ||
1622 | st = gfc_find_symtree (gfc_current_ns->sym_root, u_name); | |
1623 | ||
d7cd448a | 1624 | /* STRUCTURE types can alias symbol names */ |
1625 | if (st != 0 && st->n.sym->attr.flavor != FL_STRUCT) | |
9b49c3cb | 1626 | { |
1627 | gfc_error ("Symbol %qs at %C also declared as a type at %L", name, | |
1628 | &st->n.sym->declared_at); | |
1629 | return false; | |
1630 | } | |
1631 | } | |
1632 | ||
f6d0e37a | 1633 | /* Start updating the symbol table. Add basic type attribute if present. */ |
4ee9c684 | 1634 | if (current_ts.type != BT_UNKNOWN |
1a9745d2 | 1635 | && (sym->attr.implicit_type == 0 |
1636 | || !gfc_compare_types (&sym->ts, ¤t_ts)) | |
60e19868 | 1637 | && !gfc_add_type (sym, ¤t_ts, var_locus)) |
1638 | return false; | |
4ee9c684 | 1639 | |
1640 | if (sym->ts.type == BT_CHARACTER) | |
3e715c81 | 1641 | { |
1642 | sym->ts.u.cl = cl; | |
1643 | sym->ts.deferred = cl_deferred; | |
1644 | } | |
4ee9c684 | 1645 | |
1646 | /* Add dimension attribute if present. */ | |
60e19868 | 1647 | if (!gfc_set_array_spec (sym, *as, var_locus)) |
1648 | return false; | |
4ee9c684 | 1649 | *as = NULL; |
1650 | ||
1651 | /* Add attribute to symbol. The copy is so that we can reset the | |
1652 | dimension attribute. */ | |
1653 | attr = current_attr; | |
1654 | attr.dimension = 0; | |
aff518b0 | 1655 | attr.codimension = 0; |
4ee9c684 | 1656 | |
60e19868 | 1657 | if (!gfc_copy_attr (&sym->attr, &attr, var_locus)) |
1658 | return false; | |
4ee9c684 | 1659 | |
c5d33754 | 1660 | /* Finish any work that may need to be done for the binding label, |
1661 | if it's a bind(c). The bind(c) attr is found before the symbol | |
1662 | is made, and before the symbol name (for data decls), so the | |
1663 | current_ts is holding the binding label, or nothing if the | |
1664 | name= attr wasn't given. Therefore, test here if we're dealing | |
1665 | with a bind(c) and make sure the binding label is set correctly. */ | |
1666 | if (sym->attr.is_bind_c == 1) | |
1667 | { | |
7b2060ba | 1668 | if (!sym->binding_label) |
c5d33754 | 1669 | { |
825718f9 | 1670 | /* Set the binding label and verify that if a NAME= was specified |
1671 | then only one identifier was in the entity-decl-list. */ | |
76e207a9 | 1672 | if (!set_binding_label (&sym->binding_label, sym->name, |
60e19868 | 1673 | num_idents_on_line)) |
1674 | return false; | |
c5d33754 | 1675 | } |
1676 | } | |
1677 | ||
1678 | /* See if we know we're in a common block, and if it's a bind(c) | |
1679 | common then we need to make sure we're an interoperable type. */ | |
1680 | if (sym->attr.in_common == 1) | |
1681 | { | |
1682 | /* Test the common block object. */ | |
1683 | if (sym->common_block != NULL && sym->common_block->is_bind_c == 1 | |
1684 | && sym->ts.is_c_interop != 1) | |
1685 | { | |
bf79c656 | 1686 | gfc_error_now ("Variable %qs in common block %qs at %C " |
c5d33754 | 1687 | "must be declared with a C interoperable " |
bf79c656 | 1688 | "kind since common block %qs is BIND(C)", |
c5d33754 | 1689 | sym->name, sym->common_block->name, |
1690 | sym->common_block->name); | |
1691 | gfc_clear_error (); | |
1692 | } | |
1693 | } | |
1694 | ||
2457a77e | 1695 | sym->attr.implied_index = 0; |
1696 | ||
9d958d5b | 1697 | /* Use the parameter expressions for a parameterized derived type. */ |
1698 | if ((sym->ts.type == BT_DERIVED || sym->ts.type == BT_CLASS) | |
1699 | && sym->ts.u.derived->attr.pdt_type && type_param_spec_list) | |
1700 | sym->param_list = gfc_copy_actual_arglist (type_param_spec_list); | |
1701 | ||
fa102e56 | 1702 | if (sym->ts.type == BT_CLASS) |
e8393d49 | 1703 | return gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as); |
1de1b1a9 | 1704 | |
60e19868 | 1705 | return true; |
4ee9c684 | 1706 | } |
1707 | ||
1a9745d2 | 1708 | |
a270dc8e | 1709 | /* Set character constant to the given length. The constant will be padded or |
d1a39099 | 1710 | truncated. If we're inside an array constructor without a typespec, we |
1711 | additionally check that all elements have the same length; check_len -1 | |
1712 | means no checking. */ | |
a270dc8e | 1713 | |
1714 | void | |
bdfec5bf | 1715 | gfc_set_constant_character_len (gfc_charlen_t len, gfc_expr *expr, |
1716 | gfc_charlen_t check_len) | |
a270dc8e | 1717 | { |
c32f863c | 1718 | gfc_char_t *s; |
bdfec5bf | 1719 | gfc_charlen_t slen; |
a270dc8e | 1720 | |
00fff882 | 1721 | if (expr->ts.type != BT_CHARACTER) |
1722 | return; | |
6ade726e | 1723 | |
3badc59b | 1724 | if (expr->expr_type != EXPR_CONSTANT) |
1725 | { | |
1726 | gfc_error_now ("CHARACTER length must be a constant at %L", &expr->where); | |
1727 | return; | |
1728 | } | |
a270dc8e | 1729 | |
1730 | slen = expr->value.character.length; | |
1731 | if (len != slen) | |
1732 | { | |
c32f863c | 1733 | s = gfc_get_wide_string (len + 1); |
1734 | memcpy (s, expr->value.character.string, | |
1735 | MIN (len, slen) * sizeof (gfc_char_t)); | |
a270dc8e | 1736 | if (len > slen) |
c32f863c | 1737 | gfc_wide_memset (&s[slen], ' ', len - slen); |
1bfea7e8 | 1738 | |
fed21cc2 | 1739 | if (warn_character_truncation && slen > len) |
bf79c656 | 1740 | gfc_warning_now (OPT_Wcharacter_truncation, |
1741 | "CHARACTER expression at %L is being truncated " | |
bdfec5bf | 1742 | "(%ld/%ld)", &expr->where, |
1743 | (long) slen, (long) len); | |
1bfea7e8 | 1744 | |
1745 | /* Apply the standard by 'hand' otherwise it gets cleared for | |
1746 | initializers. */ | |
d1a39099 | 1747 | if (check_len != -1 && slen != check_len |
1748 | && !(gfc_option.allow_std & GFC_STD_GNU)) | |
1bfea7e8 | 1749 | gfc_error_now ("The CHARACTER elements of the array constructor " |
bdfec5bf | 1750 | "at %L must have the same length (%ld/%ld)", |
1751 | &expr->where, (long) slen, | |
1752 | (long) check_len); | |
1bfea7e8 | 1753 | |
89f528df | 1754 | s[len] = '\0'; |
434f0922 | 1755 | free (expr->value.character.string); |
a270dc8e | 1756 | expr->value.character.string = s; |
1757 | expr->value.character.length = len; | |
b6c59db3 | 1758 | /* If explicit representation was given, clear it |
1759 | as it is no longer needed after padding. */ | |
1760 | if (expr->representation.length) | |
1761 | { | |
1762 | expr->representation.length = 0; | |
1763 | free (expr->representation.string); | |
1764 | expr->representation.string = NULL; | |
1765 | } | |
a270dc8e | 1766 | } |
1767 | } | |
4ee9c684 | 1768 | |
3b6a4b41 | 1769 | |
e14bee04 | 1770 | /* Function to create and update the enumerator history |
3b6a4b41 | 1771 | using the information passed as arguments. |
e14bee04 | 1772 | Pointer "max_enum" is also updated, to point to |
1773 | enum history node containing largest initializer. | |
3b6a4b41 | 1774 | |
1775 | SYM points to the symbol node of enumerator. | |
f6d0e37a | 1776 | INIT points to its enumerator value. */ |
3b6a4b41 | 1777 | |
e14bee04 | 1778 | static void |
1a9745d2 | 1779 | create_enum_history (gfc_symbol *sym, gfc_expr *init) |
3b6a4b41 | 1780 | { |
1781 | enumerator_history *new_enum_history; | |
1782 | gcc_assert (sym != NULL && init != NULL); | |
1783 | ||
48d8ad5a | 1784 | new_enum_history = XCNEW (enumerator_history); |
3b6a4b41 | 1785 | |
1786 | new_enum_history->sym = sym; | |
1787 | new_enum_history->initializer = init; | |
1788 | new_enum_history->next = NULL; | |
1789 | ||
1790 | if (enum_history == NULL) | |
1791 | { | |
1792 | enum_history = new_enum_history; | |
1793 | max_enum = enum_history; | |
1794 | } | |
1795 | else | |
1796 | { | |
1797 | new_enum_history->next = enum_history; | |
1798 | enum_history = new_enum_history; | |
1799 | ||
e14bee04 | 1800 | if (mpz_cmp (max_enum->initializer->value.integer, |
3b6a4b41 | 1801 | new_enum_history->initializer->value.integer) < 0) |
1a9745d2 | 1802 | max_enum = new_enum_history; |
3b6a4b41 | 1803 | } |
1804 | } | |
1805 | ||
1806 | ||
e14bee04 | 1807 | /* Function to free enum kind history. */ |
3b6a4b41 | 1808 | |
e14bee04 | 1809 | void |
1a9745d2 | 1810 | gfc_free_enum_history (void) |
3b6a4b41 | 1811 | { |
e14bee04 | 1812 | enumerator_history *current = enum_history; |
1813 | enumerator_history *next; | |
3b6a4b41 | 1814 | |
1815 | while (current != NULL) | |
1816 | { | |
1817 | next = current->next; | |
434f0922 | 1818 | free (current); |
3b6a4b41 | 1819 | current = next; |
1820 | } | |
1821 | max_enum = NULL; | |
1822 | enum_history = NULL; | |
1823 | } | |
1824 | ||
1825 | ||
4ee9c684 | 1826 | /* Function called by variable_decl() that adds an initialization |
1827 | expression to a symbol. */ | |
1828 | ||
60e19868 | 1829 | static bool |
f6d0e37a | 1830 | add_init_expr_to_sym (const char *name, gfc_expr **initp, locus *var_locus) |
4ee9c684 | 1831 | { |
1832 | symbol_attribute attr; | |
1833 | gfc_symbol *sym; | |
1834 | gfc_expr *init; | |
1835 | ||
1836 | init = *initp; | |
36b0a1b0 | 1837 | if (find_special (name, &sym, false)) |
60e19868 | 1838 | return false; |
4ee9c684 | 1839 | |
1840 | attr = sym->attr; | |
1841 | ||
1842 | /* If this symbol is confirming an implicit parameter type, | |
1843 | then an initialization expression is not allowed. */ | |
1844 | if (attr.flavor == FL_PARAMETER | |
1845 | && sym->value != NULL | |
1846 | && *initp != NULL) | |
1847 | { | |
716da296 | 1848 | gfc_error ("Initializer not allowed for PARAMETER %qs at %C", |
4ee9c684 | 1849 | sym->name); |
60e19868 | 1850 | return false; |
4ee9c684 | 1851 | } |
1852 | ||
1853 | if (init == NULL) | |
1854 | { | |
1855 | /* An initializer is required for PARAMETER declarations. */ | |
1856 | if (attr.flavor == FL_PARAMETER) | |
1857 | { | |
1858 | gfc_error ("PARAMETER at %L is missing an initializer", var_locus); | |
60e19868 | 1859 | return false; |
4ee9c684 | 1860 | } |
1861 | } | |
1862 | else | |
1863 | { | |
1864 | /* If a variable appears in a DATA block, it cannot have an | |
b97f1a18 | 1865 | initializer. */ |
4ee9c684 | 1866 | if (sym->attr.data) |
1867 | { | |
716da296 | 1868 | gfc_error ("Variable %qs at %C with an initializer already " |
1a9745d2 | 1869 | "appears in a DATA statement", sym->name); |
60e19868 | 1870 | return false; |
4ee9c684 | 1871 | } |
1872 | ||
cca3db55 | 1873 | /* Check if the assignment can happen. This has to be put off |
23d075f4 | 1874 | until later for derived type variables and procedure pointers. */ |
d7cd448a | 1875 | if (!gfc_bt_struct (sym->ts.type) && !gfc_bt_struct (init->ts.type) |
1de1b1a9 | 1876 | && sym->ts.type != BT_CLASS && init->ts.type != BT_CLASS |
8db94b3b | 1877 | && !sym->attr.proc_pointer |
60e19868 | 1878 | && !gfc_check_assign_symbol (sym, NULL, init)) |
1879 | return false; | |
4ee9c684 | 1880 | |
eeebe20b | 1881 | if (sym->ts.type == BT_CHARACTER && sym->ts.u.cl |
da540712 | 1882 | && init->ts.type == BT_CHARACTER) |
a270dc8e | 1883 | { |
1884 | /* Update symbol character length according initializer. */ | |
60e19868 | 1885 | if (!gfc_check_assign_symbol (sym, NULL, init)) |
1886 | return false; | |
da540712 | 1887 | |
eeebe20b | 1888 | if (sym->ts.u.cl->length == NULL) |
a270dc8e | 1889 | { |
9f4d9f83 | 1890 | gfc_charlen_t clen; |
f6d0e37a | 1891 | /* If there are multiple CHARACTER variables declared on the |
1892 | same line, we don't want them to share the same length. */ | |
d270ce52 | 1893 | sym->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
e9c873a4 | 1894 | |
03c2a028 | 1895 | if (sym->attr.flavor == FL_PARAMETER) |
1896 | { | |
1897 | if (init->expr_type == EXPR_CONSTANT) | |
1898 | { | |
1899 | clen = init->value.character.length; | |
126387b5 | 1900 | sym->ts.u.cl->length |
9f4d9f83 | 1901 | = gfc_get_int_expr (gfc_charlen_int_kind, |
126387b5 | 1902 | NULL, clen); |
03c2a028 | 1903 | } |
1904 | else if (init->expr_type == EXPR_ARRAY) | |
1905 | { | |
fc9b0d53 | 1906 | if (init->ts.u.cl && init->ts.u.cl->length) |
cde225a2 | 1907 | { |
1908 | const gfc_expr *length = init->ts.u.cl->length; | |
1909 | if (length->expr_type != EXPR_CONSTANT) | |
1910 | { | |
1911 | gfc_error ("Cannot initialize parameter array " | |
1912 | "at %L " | |
1913 | "with variable length elements", | |
1914 | &sym->declared_at); | |
1915 | return false; | |
1916 | } | |
1917 | clen = mpz_get_si (length->value.integer); | |
1918 | } | |
9123b22a | 1919 | else if (init->value.constructor) |
1920 | { | |
1921 | gfc_constructor *c; | |
76e207a9 | 1922 | c = gfc_constructor_first (init->value.constructor); |
9123b22a | 1923 | clen = c->expr->value.character.length; |
1924 | } | |
1925 | else | |
1926 | gcc_unreachable (); | |
126387b5 | 1927 | sym->ts.u.cl->length |
9f4d9f83 | 1928 | = gfc_get_int_expr (gfc_charlen_int_kind, |
126387b5 | 1929 | NULL, clen); |
03c2a028 | 1930 | } |
eeebe20b | 1931 | else if (init->ts.u.cl && init->ts.u.cl->length) |
1932 | sym->ts.u.cl->length = | |
df378257 | 1933 | gfc_copy_expr (init->ts.u.cl->length); |
03c2a028 | 1934 | } |
a270dc8e | 1935 | } |
1936 | /* Update initializer character length according symbol. */ | |
eeebe20b | 1937 | else if (sym->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
a270dc8e | 1938 | { |
f8e2139b | 1939 | if (!gfc_specification_expr (sym->ts.u.cl->length)) |
1940 | return false; | |
1941 | ||
90ace78f | 1942 | int k = gfc_validate_kind (BT_INTEGER, gfc_charlen_int_kind, |
1943 | false); | |
1944 | /* resolve_charlen will complain later on if the length | |
1945 | is too large. Just skeep the initialization in that case. */ | |
1946 | if (mpz_cmp (sym->ts.u.cl->length->value.integer, | |
1947 | gfc_integer_kinds[k].huge) <= 0) | |
a270dc8e | 1948 | { |
90ace78f | 1949 | HOST_WIDE_INT len |
1950 | = gfc_mpz_get_hwi (sym->ts.u.cl->length->value.integer); | |
1951 | ||
1952 | if (init->expr_type == EXPR_CONSTANT) | |
1953 | gfc_set_constant_character_len (len, init, -1); | |
1954 | else if (init->expr_type == EXPR_ARRAY) | |
1955 | { | |
1956 | gfc_constructor *c; | |
126387b5 | 1957 | |
90ace78f | 1958 | /* Build a new charlen to prevent simplification from |
1959 | deleting the length before it is resolved. */ | |
1960 | init->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); | |
1961 | init->ts.u.cl->length | |
1962 | = gfc_copy_expr (sym->ts.u.cl->length); | |
39908fd9 | 1963 | |
90ace78f | 1964 | for (c = gfc_constructor_first (init->value.constructor); |
1965 | c; c = gfc_constructor_next (c)) | |
1966 | gfc_set_constant_character_len (len, c->expr, -1); | |
1967 | } | |
a270dc8e | 1968 | } |
1969 | } | |
1970 | } | |
1971 | ||
ae2864a8 | 1972 | /* If sym is implied-shape, set its upper bounds from init. */ |
1973 | if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension | |
1974 | && sym->as->type == AS_IMPLIED_SHAPE) | |
1975 | { | |
1976 | int dim; | |
1977 | ||
1978 | if (init->rank == 0) | |
1979 | { | |
1980 | gfc_error ("Can't initialize implied-shape array at %L" | |
1981 | " with scalar", &sym->declared_at); | |
60e19868 | 1982 | return false; |
ae2864a8 | 1983 | } |
ae2864a8 | 1984 | |
1985 | /* Shape should be present, we get an initialization expression. */ | |
1986 | gcc_assert (init->shape); | |
1987 | ||
1988 | for (dim = 0; dim < sym->as->rank; ++dim) | |
1989 | { | |
1990 | int k; | |
0c0c5469 | 1991 | gfc_expr *e, *lower; |
8db94b3b | 1992 | |
ae2864a8 | 1993 | lower = sym->as->lower[dim]; |
0c0c5469 | 1994 | |
76e207a9 | 1995 | /* If the lower bound is an array element from another |
0c0c5469 | 1996 | parameterized array, then it is marked with EXPR_VARIABLE and |
1997 | is an initialization expression. Try to reduce it. */ | |
1998 | if (lower->expr_type == EXPR_VARIABLE) | |
1999 | gfc_reduce_init_expr (lower); | |
2000 | ||
2001 | if (lower->expr_type == EXPR_CONSTANT) | |
2002 | { | |
2003 | /* All dimensions must be without upper bound. */ | |
2004 | gcc_assert (!sym->as->upper[dim]); | |
2005 | ||
2006 | k = lower->ts.kind; | |
2007 | e = gfc_get_constant_expr (BT_INTEGER, k, &sym->declared_at); | |
2008 | mpz_add (e->value.integer, lower->value.integer, | |
2009 | init->shape[dim]); | |
2010 | mpz_sub_ui (e->value.integer, e->value.integer, 1); | |
2011 | sym->as->upper[dim] = e; | |
2012 | } | |
2013 | else | |
ae2864a8 | 2014 | { |
2015 | gfc_error ("Non-constant lower bound in implied-shape" | |
2016 | " declaration at %L", &lower->where); | |
60e19868 | 2017 | return false; |
ae2864a8 | 2018 | } |
ae2864a8 | 2019 | } |
2020 | ||
2021 | sym->as->type = AS_EXPLICIT; | |
2022 | } | |
2023 | ||
c5d33754 | 2024 | /* Need to check if the expression we initialized this |
2025 | to was one of the iso_c_binding named constants. If so, | |
2026 | and we're a parameter (constant), let it be iso_c. | |
2027 | For example: | |
2028 | integer(c_int), parameter :: my_int = c_int | |
2029 | integer(my_int) :: my_int_2 | |
2030 | If we mark my_int as iso_c (since we can see it's value | |
2031 | is equal to one of the named constants), then my_int_2 | |
2032 | will be considered C interoperable. */ | |
d7cd448a | 2033 | if (sym->ts.type != BT_CHARACTER && !gfc_bt_struct (sym->ts.type)) |
c5d33754 | 2034 | { |
2035 | sym->ts.is_iso_c |= init->ts.is_iso_c; | |
2036 | sym->ts.is_c_interop |= init->ts.is_c_interop; | |
2037 | /* attr bits needed for module files. */ | |
2038 | sym->attr.is_iso_c |= init->ts.is_iso_c; | |
2039 | sym->attr.is_c_interop |= init->ts.is_c_interop; | |
2040 | if (init->ts.is_iso_c) | |
2041 | sym->ts.f90_type = init->ts.f90_type; | |
2042 | } | |
126387b5 | 2043 | |
4ee9c684 | 2044 | /* Add initializer. Make sure we keep the ranks sane. */ |
2045 | if (sym->attr.dimension && init->rank == 0) | |
7baa3fb4 | 2046 | { |
2047 | mpz_t size; | |
2048 | gfc_expr *array; | |
7baa3fb4 | 2049 | int n; |
2050 | if (sym->attr.flavor == FL_PARAMETER | |
2051 | && init->expr_type == EXPR_CONSTANT | |
60e19868 | 2052 | && spec_size (sym->as, &size) |
7baa3fb4 | 2053 | && mpz_cmp_si (size, 0) > 0) |
2054 | { | |
126387b5 | 2055 | array = gfc_get_array_expr (init->ts.type, init->ts.kind, |
2056 | &init->where); | |
7baa3fb4 | 2057 | for (n = 0; n < (int)mpz_get_si (size); n++) |
126387b5 | 2058 | gfc_constructor_append_expr (&array->value.constructor, |
2059 | n == 0 | |
2060 | ? init | |
2061 | : gfc_copy_expr (init), | |
2062 | &init->where); | |
8db94b3b | 2063 | |
7baa3fb4 | 2064 | array->shape = gfc_get_shape (sym->as->rank); |
2065 | for (n = 0; n < sym->as->rank; n++) | |
2066 | spec_dimen_size (sym->as, n, &array->shape[n]); | |
2067 | ||
2068 | init = array; | |
2069 | mpz_clear (size); | |
2070 | } | |
2071 | init->rank = sym->as->rank; | |
2072 | } | |
4ee9c684 | 2073 | |
2074 | sym->value = init; | |
3cd3c667 | 2075 | if (sym->attr.save == SAVE_NONE) |
2076 | sym->attr.save = SAVE_IMPLICIT; | |
4ee9c684 | 2077 | *initp = NULL; |
2078 | } | |
2079 | ||
60e19868 | 2080 | return true; |
4ee9c684 | 2081 | } |
2082 | ||
2083 | ||
2084 | /* Function called by variable_decl() that adds a name to a structure | |
2085 | being built. */ | |
2086 | ||
60e19868 | 2087 | static bool |
1a9745d2 | 2088 | build_struct (const char *name, gfc_charlen *cl, gfc_expr **init, |
2089 | gfc_array_spec **as) | |
4ee9c684 | 2090 | { |
d7cd448a | 2091 | gfc_state_data *s; |
4ee9c684 | 2092 | gfc_component *c; |
2093 | ||
53d2e124 | 2094 | /* F03:C438/C439. If the current symbol is of the same derived type that we're |
4ee9c684 | 2095 | constructing, it must have the pointer attribute. */ |
53d2e124 | 2096 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
eeebe20b | 2097 | && current_ts.u.derived == gfc_current_block () |
4ee9c684 | 2098 | && current_attr.pointer == 0) |
2099 | { | |
dd7553fe | 2100 | if (current_attr.allocatable |
2101 | && !gfc_notify_std(GFC_STD_F2008, "Component at %C " | |
2102 | "must have the POINTER attribute")) | |
2103 | { | |
2104 | return false; | |
2105 | } | |
2106 | else if (current_attr.allocatable == 0) | |
2107 | { | |
abfb4be5 | 2108 | gfc_error ("Component at %C must have the POINTER attribute"); |
2109 | return false; | |
2110 | } | |
4ee9c684 | 2111 | } |
abfb4be5 | 2112 | |
2113 | /* F03:C437. */ | |
2114 | if (current_ts.type == BT_CLASS | |
2115 | && !(current_attr.pointer || current_attr.allocatable)) | |
2116 | { | |
2117 | gfc_error ("Component %qs with CLASS at %C must be allocatable " | |
2118 | "or pointer", name); | |
2119 | return false; | |
dd7553fe | 2120 | } |
4ee9c684 | 2121 | |
1a9745d2 | 2122 | if (gfc_current_block ()->attr.pointer && (*as)->rank != 0) |
4ee9c684 | 2123 | { |
2124 | if ((*as)->type != AS_DEFERRED && (*as)->type != AS_EXPLICIT) | |
2125 | { | |
2126 | gfc_error ("Array component of structure at %C must have explicit " | |
2127 | "or deferred shape"); | |
60e19868 | 2128 | return false; |
4ee9c684 | 2129 | } |
2130 | } | |
2131 | ||
d7cd448a | 2132 | /* If we are in a nested union/map definition, gfc_add_component will not |
2133 | properly find repeated components because: | |
7d7125df | 2134 | (i) gfc_add_component does a flat search, where components of unions |
d7cd448a | 2135 | and maps are implicity chained so nested components may conflict. |
2136 | (ii) Unions and maps are not linked as components of their parent | |
2137 | structures until after they are parsed. | |
2138 | For (i) we use gfc_find_component which searches recursively, and for (ii) | |
2139 | we search each block directly from the parse stack until we find the top | |
2140 | level structure. */ | |
2141 | ||
2142 | s = gfc_state_stack; | |
2143 | if (s->state == COMP_UNION || s->state == COMP_MAP) | |
2144 | { | |
2145 | while (s->state == COMP_UNION || gfc_comp_struct (s->state)) | |
2146 | { | |
2147 | c = gfc_find_component (s->sym, name, true, true, NULL); | |
2148 | if (c != NULL) | |
2149 | { | |
1b7008c4 | 2150 | gfc_error_now ("Component %qs at %C already declared at %L", |
d7cd448a | 2151 | name, &c->loc); |
2152 | return false; | |
2153 | } | |
2154 | /* Break after we've searched the entire chain. */ | |
2155 | if (s->state == COMP_DERIVED || s->state == COMP_STRUCTURE) | |
2156 | break; | |
2157 | s = s->previous; | |
2158 | } | |
2159 | } | |
2160 | ||
60e19868 | 2161 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
2162 | return false; | |
4ee9c684 | 2163 | |
2164 | c->ts = current_ts; | |
eeebe20b | 2165 | if (c->ts.type == BT_CHARACTER) |
2166 | c->ts.u.cl = cl; | |
9d958d5b | 2167 | |
2168 | if (c->ts.type != BT_CLASS && c->ts.type != BT_DERIVED | |
f0efd2e8 | 2169 | && (c->ts.kind == 0 || c->ts.type == BT_CHARACTER) |
2170 | && saved_kind_expr != NULL) | |
9d958d5b | 2171 | c->kind_expr = gfc_copy_expr (saved_kind_expr); |
2172 | ||
3be2b8d5 | 2173 | c->attr = current_attr; |
4ee9c684 | 2174 | |
2175 | c->initializer = *init; | |
2176 | *init = NULL; | |
2177 | ||
2178 | c->as = *as; | |
2179 | if (c->as != NULL) | |
aff518b0 | 2180 | { |
2181 | if (c->as->corank) | |
2182 | c->attr.codimension = 1; | |
2183 | if (c->as->rank) | |
2184 | c->attr.dimension = 1; | |
2185 | } | |
4ee9c684 | 2186 | *as = NULL; |
2187 | ||
36d310d0 | 2188 | gfc_apply_init (&c->ts, &c->attr, c->initializer); |
a2f51d5f | 2189 | |
4ee9c684 | 2190 | /* Check array components. */ |
3be2b8d5 | 2191 | if (!c->attr.dimension) |
b3704193 | 2192 | goto scalar; |
4ee9c684 | 2193 | |
3be2b8d5 | 2194 | if (c->attr.pointer) |
4ee9c684 | 2195 | { |
2196 | if (c->as->type != AS_DEFERRED) | |
2197 | { | |
2294b616 | 2198 | gfc_error ("Pointer array component of structure at %C must have a " |
2199 | "deferred shape"); | |
2fa20713 | 2200 | return false; |
2294b616 | 2201 | } |
2202 | } | |
3be2b8d5 | 2203 | else if (c->attr.allocatable) |
2294b616 | 2204 | { |
2205 | if (c->as->type != AS_DEFERRED) | |
2206 | { | |
2207 | gfc_error ("Allocatable component of structure at %C must have a " | |
2208 | "deferred shape"); | |
2fa20713 | 2209 | return false; |
4ee9c684 | 2210 | } |
2211 | } | |
2212 | else | |
2213 | { | |
2214 | if (c->as->type != AS_EXPLICIT) | |
2215 | { | |
1a9745d2 | 2216 | gfc_error ("Array component of structure at %C must have an " |
2217 | "explicit shape"); | |
2fa20713 | 2218 | return false; |
4ee9c684 | 2219 | } |
2220 | } | |
2221 | ||
b3704193 | 2222 | scalar: |
2223 | if (c->ts.type == BT_CLASS) | |
2fa20713 | 2224 | return gfc_build_class_symbol (&c->ts, &c->attr, &c->as); |
431a19be | 2225 | |
9d958d5b | 2226 | if (c->attr.pdt_kind || c->attr.pdt_len) |
2227 | { | |
2228 | gfc_symbol *sym; | |
2229 | gfc_find_symbol (c->name, gfc_current_block ()->f2k_derived, | |
2230 | 0, &sym); | |
2231 | if (sym == NULL) | |
2232 | { | |
2233 | gfc_error ("Type parameter %qs at %C has no corresponding entry " | |
2234 | "in the type parameter name list at %L", | |
2235 | c->name, &gfc_current_block ()->declared_at); | |
2236 | return false; | |
2237 | } | |
2238 | sym->ts = c->ts; | |
2239 | sym->attr.pdt_kind = c->attr.pdt_kind; | |
2240 | sym->attr.pdt_len = c->attr.pdt_len; | |
2241 | if (c->initializer) | |
2242 | sym->value = gfc_copy_expr (c->initializer); | |
2243 | sym->attr.flavor = FL_VARIABLE; | |
2244 | } | |
2245 | ||
2246 | if ((c->ts.type == BT_DERIVED || c->ts.type == BT_CLASS) | |
2247 | && c->ts.u.derived && c->ts.u.derived->attr.pdt_template | |
2248 | && decl_type_param_list) | |
2249 | c->param_list = gfc_copy_actual_arglist (decl_type_param_list); | |
2250 | ||
2fa20713 | 2251 | return true; |
4ee9c684 | 2252 | } |
2253 | ||
2254 | ||
2255 | /* Match a 'NULL()', and possibly take care of some side effects. */ | |
2256 | ||
2257 | match | |
1a9745d2 | 2258 | gfc_match_null (gfc_expr **result) |
4ee9c684 | 2259 | { |
2260 | gfc_symbol *sym; | |
f9d34e9a | 2261 | match m, m2 = MATCH_NO; |
4ee9c684 | 2262 | |
f9d34e9a | 2263 | if ((m = gfc_match (" null ( )")) == MATCH_ERROR) |
2264 | return MATCH_ERROR; | |
2265 | ||
2266 | if (m == MATCH_NO) | |
2267 | { | |
2268 | locus old_loc; | |
2269 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
2270 | ||
d780a64b | 2271 | if ((m2 = gfc_match (" null (")) != MATCH_YES) |
f9d34e9a | 2272 | return m2; |
2273 | ||
2274 | old_loc = gfc_current_locus; | |
2275 | if ((m2 = gfc_match (" %n ) ", name)) == MATCH_ERROR) | |
2276 | return MATCH_ERROR; | |
2277 | if (m2 != MATCH_YES | |
2278 | && ((m2 = gfc_match (" mold = %n )", name)) == MATCH_ERROR)) | |
2279 | return MATCH_ERROR; | |
2280 | if (m2 == MATCH_NO) | |
2281 | { | |
2282 | gfc_current_locus = old_loc; | |
2283 | return MATCH_NO; | |
2284 | } | |
2285 | } | |
4ee9c684 | 2286 | |
2287 | /* The NULL symbol now has to be/become an intrinsic function. */ | |
2288 | if (gfc_get_symbol ("null", NULL, &sym)) | |
2289 | { | |
2290 | gfc_error ("NULL() initialization at %C is ambiguous"); | |
2291 | return MATCH_ERROR; | |
2292 | } | |
2293 | ||
2294 | gfc_intrinsic_symbol (sym); | |
2295 | ||
2296 | if (sym->attr.proc != PROC_INTRINSIC | |
ddf8ce2d | 2297 | && !(sym->attr.use_assoc && sym->attr.intrinsic) |
60e19868 | 2298 | && (!gfc_add_procedure(&sym->attr, PROC_INTRINSIC, sym->name, NULL) |
2299 | || !gfc_add_function (&sym->attr, sym->name, NULL))) | |
4ee9c684 | 2300 | return MATCH_ERROR; |
2301 | ||
126387b5 | 2302 | *result = gfc_get_null_expr (&gfc_current_locus); |
4ee9c684 | 2303 | |
f9d34e9a | 2304 | /* Invalid per F2008, C512. */ |
2305 | if (m2 == MATCH_YES) | |
2306 | { | |
2307 | gfc_error ("NULL() initialization at %C may not have MOLD"); | |
2308 | return MATCH_ERROR; | |
2309 | } | |
2310 | ||
4ee9c684 | 2311 | return MATCH_YES; |
2312 | } | |
2313 | ||
2314 | ||
23d075f4 | 2315 | /* Match the initialization expr for a data pointer or procedure pointer. */ |
2316 | ||
2317 | static match | |
2318 | match_pointer_init (gfc_expr **init, int procptr) | |
2319 | { | |
2320 | match m; | |
2321 | ||
d7cd448a | 2322 | if (gfc_pure (NULL) && !gfc_comp_struct (gfc_state_stack->state)) |
23d075f4 | 2323 | { |
2324 | gfc_error ("Initialization of pointer at %C is not allowed in " | |
2325 | "a PURE procedure"); | |
2326 | return MATCH_ERROR; | |
2327 | } | |
c77badf3 | 2328 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
23d075f4 | 2329 | |
df084314 | 2330 | /* Match NULL() initialization. */ |
23d075f4 | 2331 | m = gfc_match_null (init); |
2332 | if (m != MATCH_NO) | |
2333 | return m; | |
2334 | ||
2335 | /* Match non-NULL initialization. */ | |
f3efaada | 2336 | gfc_matching_ptr_assignment = !procptr; |
23d075f4 | 2337 | gfc_matching_procptr_assignment = procptr; |
2338 | m = gfc_match_rvalue (init); | |
f3efaada | 2339 | gfc_matching_ptr_assignment = 0; |
23d075f4 | 2340 | gfc_matching_procptr_assignment = 0; |
2341 | if (m == MATCH_ERROR) | |
2342 | return MATCH_ERROR; | |
2343 | else if (m == MATCH_NO) | |
2344 | { | |
2345 | gfc_error ("Error in pointer initialization at %C"); | |
2346 | return MATCH_ERROR; | |
2347 | } | |
2348 | ||
7c94d8e5 | 2349 | if (!procptr && !gfc_resolve_expr (*init)) |
2350 | return MATCH_ERROR; | |
8db94b3b | 2351 | |
60e19868 | 2352 | if (!gfc_notify_std (GFC_STD_F2008, "non-NULL pointer " |
2353 | "initialization at %C")) | |
23d075f4 | 2354 | return MATCH_ERROR; |
2355 | ||
2356 | return MATCH_YES; | |
2357 | } | |
2358 | ||
2359 | ||
60e19868 | 2360 | static bool |
f3e89339 | 2361 | check_function_name (char *name) |
2362 | { | |
2363 | /* In functions that have a RESULT variable defined, the function name always | |
2364 | refers to function calls. Therefore, the name is not allowed to appear in | |
2365 | specification statements. When checking this, be careful about | |
2366 | 'hidden' procedure pointer results ('ppr@'). */ | |
2367 | ||
2368 | if (gfc_current_state () == COMP_FUNCTION) | |
2369 | { | |
2370 | gfc_symbol *block = gfc_current_block (); | |
2371 | if (block && block->result && block->result != block | |
2372 | && strcmp (block->result->name, "ppr@") != 0 | |
2373 | && strcmp (block->name, name) == 0) | |
2374 | { | |
2c6ca8fc | 2375 | gfc_error ("RESULT variable %qs at %L prohibits FUNCTION name %qs at %C " |
2376 | "from appearing in a specification statement", | |
2377 | block->result->name, &block->result->declared_at, name); | |
60e19868 | 2378 | return false; |
f3e89339 | 2379 | } |
2380 | } | |
2381 | ||
60e19868 | 2382 | return true; |
f3e89339 | 2383 | } |
2384 | ||
2385 | ||
4ee9c684 | 2386 | /* Match a variable name with an optional initializer. When this |
2387 | subroutine is called, a variable is expected to be parsed next. | |
2388 | Depending on what is happening at the moment, updates either the | |
2389 | symbol table or the current interface. */ | |
2390 | ||
2391 | static match | |
3923b69f | 2392 | variable_decl (int elem) |
4ee9c684 | 2393 | { |
2394 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8ef2cf76 | 2395 | static unsigned int fill_id = 0; |
4ee9c684 | 2396 | gfc_expr *initializer, *char_len; |
2397 | gfc_array_spec *as; | |
b549d2a5 | 2398 | gfc_array_spec *cp_as; /* Extra copy for Cray Pointees. */ |
4ee9c684 | 2399 | gfc_charlen *cl; |
3e715c81 | 2400 | bool cl_deferred; |
4ee9c684 | 2401 | locus var_locus; |
2402 | match m; | |
60e19868 | 2403 | bool t; |
b549d2a5 | 2404 | gfc_symbol *sym; |
4ee9c684 | 2405 | |
2406 | initializer = NULL; | |
2407 | as = NULL; | |
b549d2a5 | 2408 | cp_as = NULL; |
4ee9c684 | 2409 | |
2410 | /* When we get here, we've just matched a list of attributes and | |
2411 | maybe a type and a double colon. The next thing we expect to see | |
2412 | is the name of the symbol. */ | |
8ef2cf76 | 2413 | |
2414 | /* If we are parsing a structure with legacy support, we allow the symbol | |
2415 | name to be '%FILL' which gives it an anonymous (inaccessible) name. */ | |
2416 | m = MATCH_NO; | |
2417 | gfc_gobble_whitespace (); | |
2418 | if (gfc_peek_ascii_char () == '%') | |
2419 | { | |
2420 | gfc_next_ascii_char (); | |
2421 | m = gfc_match ("fill"); | |
2422 | } | |
2423 | ||
4ee9c684 | 2424 | if (m != MATCH_YES) |
8ef2cf76 | 2425 | { |
2426 | m = gfc_match_name (name); | |
2427 | if (m != MATCH_YES) | |
2428 | goto cleanup; | |
2429 | } | |
2430 | ||
2431 | else | |
2432 | { | |
2433 | m = MATCH_ERROR; | |
2434 | if (gfc_current_state () != COMP_STRUCTURE) | |
2435 | { | |
2436 | if (flag_dec_structure) | |
2437 | gfc_error ("%qs not allowed outside STRUCTURE at %C", "%FILL"); | |
2438 | else | |
2439 | gfc_error ("%qs at %C is a DEC extension, enable with " | |
2440 | "%<-fdec-structure%>", "%FILL"); | |
2441 | goto cleanup; | |
2442 | } | |
2443 | ||
2444 | if (attr_seen) | |
2445 | { | |
2446 | gfc_error ("%qs entity cannot have attributes at %C", "%FILL"); | |
2447 | goto cleanup; | |
2448 | } | |
2449 | ||
2450 | /* %FILL components are given invalid fortran names. */ | |
2451 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "%%FILL%u", fill_id++); | |
2452 | m = MATCH_YES; | |
2453 | } | |
4ee9c684 | 2454 | |
cbb9e6aa | 2455 | var_locus = gfc_current_locus; |
4ee9c684 | 2456 | |
2457 | /* Now we could see the optional array spec. or character length. */ | |
aff518b0 | 2458 | m = gfc_match_array_spec (&as, true, true); |
eae6c6c1 | 2459 | if (m == MATCH_ERROR) |
4ee9c684 | 2460 | goto cleanup; |
3b6a4b41 | 2461 | |
4ee9c684 | 2462 | if (m == MATCH_NO) |
2463 | as = gfc_copy_array_spec (current_as); | |
9b58b4c7 | 2464 | else if (current_as |
60e19868 | 2465 | && !merge_array_spec (current_as, as, true)) |
9b58b4c7 | 2466 | { |
2467 | m = MATCH_ERROR; | |
2468 | goto cleanup; | |
2469 | } | |
4ee9c684 | 2470 | |
829d7a08 | 2471 | if (flag_cray_pointer) |
eae6c6c1 | 2472 | cp_as = gfc_copy_array_spec (as); |
2473 | ||
ae2864a8 | 2474 | /* At this point, we know for sure if the symbol is PARAMETER and can thus |
2475 | determine (and check) whether it can be implied-shape. If it | |
f4d3c071 | 2476 | was parsed as assumed-size, change it because PARAMETERs cannot |
fc386590 | 2477 | be assumed-size. |
2478 | ||
2479 | An explicit-shape-array cannot appear under several conditions. | |
2480 | That check is done here as well. */ | |
ae2864a8 | 2481 | if (as) |
2482 | { | |
2483 | if (as->type == AS_IMPLIED_SHAPE && current_attr.flavor != FL_PARAMETER) | |
2484 | { | |
2485 | m = MATCH_ERROR; | |
716da296 | 2486 | gfc_error ("Non-PARAMETER symbol %qs at %L can't be implied-shape", |
ae2864a8 | 2487 | name, &var_locus); |
2488 | goto cleanup; | |
2489 | } | |
2490 | ||
2491 | if (as->type == AS_ASSUMED_SIZE && as->rank == 1 | |
2492 | && current_attr.flavor == FL_PARAMETER) | |
2493 | as->type = AS_IMPLIED_SHAPE; | |
2494 | ||
2495 | if (as->type == AS_IMPLIED_SHAPE | |
76e207a9 | 2496 | && !gfc_notify_std (GFC_STD_F2008, "Implied-shape array at %L", |
60e19868 | 2497 | &var_locus)) |
ae2864a8 | 2498 | { |
2499 | m = MATCH_ERROR; | |
2500 | goto cleanup; | |
2501 | } | |
fc386590 | 2502 | |
2503 | /* F2018:C830 (R816) An explicit-shape-spec whose bounds are not | |
2504 | constant expressions shall appear only in a subprogram, derived | |
2505 | type definition, BLOCK construct, or interface body. */ | |
2506 | if (as->type == AS_EXPLICIT | |
2507 | && gfc_current_state () != COMP_BLOCK | |
2508 | && gfc_current_state () != COMP_DERIVED | |
2509 | && gfc_current_state () != COMP_FUNCTION | |
2510 | && gfc_current_state () != COMP_INTERFACE | |
2511 | && gfc_current_state () != COMP_SUBROUTINE) | |
2512 | { | |
2513 | gfc_expr *e; | |
2514 | bool not_constant = false; | |
2515 | ||
2516 | for (int i = 0; i < as->rank; i++) | |
2517 | { | |
2518 | e = gfc_copy_expr (as->lower[i]); | |
2519 | gfc_resolve_expr (e); | |
2520 | gfc_simplify_expr (e, 0); | |
2521 | if (e && (e->expr_type != EXPR_CONSTANT)) | |
2522 | { | |
2523 | not_constant = true; | |
2524 | break; | |
2525 | } | |
2526 | gfc_free_expr (e); | |
2527 | ||
2528 | e = gfc_copy_expr (as->upper[i]); | |
2529 | gfc_resolve_expr (e); | |
2530 | gfc_simplify_expr (e, 0); | |
2531 | if (e && (e->expr_type != EXPR_CONSTANT)) | |
2532 | { | |
2533 | not_constant = true; | |
2534 | break; | |
2535 | } | |
2536 | gfc_free_expr (e); | |
2537 | } | |
2538 | ||
2539 | if (not_constant) | |
4bd908ff | 2540 | { |
fc386590 | 2541 | gfc_error ("Explicit shaped array with nonconstant bounds at %C"); |
2542 | m = MATCH_ERROR; | |
2543 | goto cleanup; | |
2544 | } | |
2545 | } | |
09ebadea | 2546 | if (as->type == AS_EXPLICIT) |
2547 | { | |
2548 | for (int i = 0; i < as->rank; i++) | |
2549 | { | |
2550 | gfc_expr *e, *n; | |
2551 | e = as->lower[i]; | |
2552 | if (e->expr_type != EXPR_CONSTANT) | |
2553 | { | |
2554 | n = gfc_copy_expr (e); | |
2555 | gfc_simplify_expr (n, 1); | |
2556 | if (n->expr_type == EXPR_CONSTANT) | |
2557 | gfc_replace_expr (e, n); | |
2558 | else | |
2559 | gfc_free_expr (n); | |
2560 | } | |
2561 | e = as->upper[i]; | |
2562 | if (e->expr_type != EXPR_CONSTANT) | |
2563 | { | |
2564 | n = gfc_copy_expr (e); | |
2565 | gfc_simplify_expr (n, 1); | |
2566 | if (n->expr_type == EXPR_CONSTANT) | |
2567 | gfc_replace_expr (e, n); | |
2568 | else | |
2569 | gfc_free_expr (n); | |
2570 | } | |
2571 | } | |
2572 | } | |
ae2864a8 | 2573 | } |
2574 | ||
4ee9c684 | 2575 | char_len = NULL; |
2576 | cl = NULL; | |
3e715c81 | 2577 | cl_deferred = false; |
4ee9c684 | 2578 | |
2579 | if (current_ts.type == BT_CHARACTER) | |
2580 | { | |
926b8757 | 2581 | switch (match_char_length (&char_len, &cl_deferred, false)) |
4ee9c684 | 2582 | { |
2583 | case MATCH_YES: | |
d270ce52 | 2584 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
4ee9c684 | 2585 | |
2586 | cl->length = char_len; | |
2587 | break; | |
2588 | ||
3923b69f | 2589 | /* Non-constant lengths need to be copied after the first |
04b61f60 | 2590 | element. Also copy assumed lengths. */ |
4ee9c684 | 2591 | case MATCH_NO: |
04b61f60 | 2592 | if (elem > 1 |
eeebe20b | 2593 | && (current_ts.u.cl->length == NULL |
2594 | || current_ts.u.cl->length->expr_type != EXPR_CONSTANT)) | |
3923b69f | 2595 | { |
d270ce52 | 2596 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
eeebe20b | 2597 | cl->length = gfc_copy_expr (current_ts.u.cl->length); |
3923b69f | 2598 | } |
2599 | else | |
eeebe20b | 2600 | cl = current_ts.u.cl; |
3923b69f | 2601 | |
3e715c81 | 2602 | cl_deferred = current_ts.deferred; |
2603 | ||
4ee9c684 | 2604 | break; |
2605 | ||
2606 | case MATCH_ERROR: | |
2607 | goto cleanup; | |
2608 | } | |
2609 | } | |
2610 | ||
4b8eb6ca | 2611 | /* The dummy arguments and result of the abreviated form of MODULE |
2612 | PROCEDUREs, used in SUBMODULES should not be redefined. */ | |
2613 | if (gfc_current_ns->proc_name | |
2614 | && gfc_current_ns->proc_name->abr_modproc_decl) | |
2615 | { | |
2616 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2617 | if (sym != NULL && (sym->attr.dummy || sym->attr.result)) | |
2618 | { | |
2619 | m = MATCH_ERROR; | |
2f7de6c1 | 2620 | gfc_error ("%qs at %C is a redefinition of the declaration " |
4b8eb6ca | 2621 | "in the corresponding interface for MODULE " |
2f7de6c1 | 2622 | "PROCEDURE %qs", sym->name, |
4b8eb6ca | 2623 | gfc_current_ns->proc_name->name); |
2624 | goto cleanup; | |
2625 | } | |
2626 | } | |
2627 | ||
8ef2cf76 | 2628 | /* %FILL components may not have initializers. */ |
ea9e8242 | 2629 | if (gfc_str_startswith (name, "%FILL") && gfc_match_eos () != MATCH_YES) |
8ef2cf76 | 2630 | { |
2631 | gfc_error ("%qs entity cannot have an initializer at %C", "%FILL"); | |
2632 | m = MATCH_ERROR; | |
2633 | goto cleanup; | |
2634 | } | |
2635 | ||
b549d2a5 | 2636 | /* If this symbol has already shown up in a Cray Pointer declaration, |
322680b5 | 2637 | and this is not a component declaration, |
f6d0e37a | 2638 | then we want to set the type & bail out. */ |
d7cd448a | 2639 | if (flag_cray_pointer && !gfc_comp_struct (gfc_current_state ())) |
b549d2a5 | 2640 | { |
2641 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2642 | if (sym != NULL && sym->attr.cray_pointee) | |
2643 | { | |
b549d2a5 | 2644 | m = MATCH_YES; |
4bd908ff | 2645 | if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
2646 | { | |
2647 | m = MATCH_ERROR; | |
2648 | goto cleanup; | |
2649 | } | |
8db94b3b | 2650 | |
b549d2a5 | 2651 | /* Check to see if we have an array specification. */ |
2652 | if (cp_as != NULL) | |
2653 | { | |
2654 | if (sym->as != NULL) | |
2655 | { | |
7698a624 | 2656 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
b549d2a5 | 2657 | gfc_free_array_spec (cp_as); |
2658 | m = MATCH_ERROR; | |
2659 | goto cleanup; | |
2660 | } | |
2661 | else | |
2662 | { | |
60e19868 | 2663 | if (!gfc_set_array_spec (sym, cp_as, &var_locus)) |
b549d2a5 | 2664 | gfc_internal_error ("Couldn't set pointee array spec."); |
e14bee04 | 2665 | |
b549d2a5 | 2666 | /* Fix the array spec. */ |
e14bee04 | 2667 | m = gfc_mod_pointee_as (sym->as); |
b549d2a5 | 2668 | if (m == MATCH_ERROR) |
2669 | goto cleanup; | |
2670 | } | |
e14bee04 | 2671 | } |
b549d2a5 | 2672 | goto cleanup; |
2673 | } | |
2674 | else | |
2675 | { | |
2676 | gfc_free_array_spec (cp_as); | |
2677 | } | |
2678 | } | |
e14bee04 | 2679 | |
1e057e9b | 2680 | /* Procedure pointer as function result. */ |
2681 | if (gfc_current_state () == COMP_FUNCTION | |
2682 | && strcmp ("ppr@", gfc_current_block ()->name) == 0 | |
2683 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) == 0) | |
2684 | strcpy (name, "ppr@"); | |
2685 | ||
2686 | if (gfc_current_state () == COMP_FUNCTION | |
2687 | && strcmp (name, gfc_current_block ()->name) == 0 | |
2688 | && gfc_current_block ()->result | |
2689 | && strcmp ("ppr@", gfc_current_block ()->result->name) == 0) | |
2690 | strcpy (name, "ppr@"); | |
e14bee04 | 2691 | |
4ee9c684 | 2692 | /* OK, we've successfully matched the declaration. Now put the |
2693 | symbol in the current namespace, because it might be used in the | |
fe06c0d5 | 2694 | optional initialization expression for this symbol, e.g. this is |
4ee9c684 | 2695 | perfectly legal: |
2696 | ||
2697 | integer, parameter :: i = huge(i) | |
2698 | ||
2699 | This is only true for parameters or variables of a basic type. | |
2700 | For components of derived types, it is not true, so we don't | |
2701 | create a symbol for those yet. If we fail to create the symbol, | |
2702 | bail out. */ | |
d7cd448a | 2703 | if (!gfc_comp_struct (gfc_current_state ()) |
60e19868 | 2704 | && !build_sym (name, cl, cl_deferred, &as, &var_locus)) |
4ee9c684 | 2705 | { |
b8a51d79 | 2706 | m = MATCH_ERROR; |
2707 | goto cleanup; | |
2708 | } | |
2709 | ||
60e19868 | 2710 | if (!check_function_name (name)) |
4ee9c684 | 2711 | { |
4ee9c684 | 2712 | m = MATCH_ERROR; |
2713 | goto cleanup; | |
2714 | } | |
2715 | ||
b4f45d02 | 2716 | /* We allow old-style initializations of the form |
2717 | integer i /2/, j(4) /3*3, 1/ | |
2718 | (if no colon has been seen). These are different from data | |
2719 | statements in that initializers are only allowed to apply to the | |
2720 | variable immediately preceding, i.e. | |
2721 | integer i, j /1, 2/ | |
2722 | is not allowed. Therefore we have to do some work manually, that | |
cca3db55 | 2723 | could otherwise be left to the matchers for DATA statements. */ |
b4f45d02 | 2724 | |
2725 | if (!colon_seen && gfc_match (" /") == MATCH_YES) | |
2726 | { | |
60e19868 | 2727 | if (!gfc_notify_std (GFC_STD_GNU, "Old-style " |
2728 | "initialization at %C")) | |
b4f45d02 | 2729 | return MATCH_ERROR; |
d7cd448a | 2730 | |
2731 | /* Allow old style initializations for components of STRUCTUREs and MAPs | |
2732 | but not components of derived types. */ | |
d57a1422 | 2733 | else if (gfc_current_state () == COMP_DERIVED) |
2734 | { | |
2735 | gfc_error ("Invalid old style initialization for derived type " | |
2736 | "component at %C"); | |
2737 | m = MATCH_ERROR; | |
2738 | goto cleanup; | |
2739 | } | |
8db94b3b | 2740 | |
d7cd448a | 2741 | /* For structure components, read the initializer as a special |
2742 | expression and let the rest of this function apply the initializer | |
2743 | as usual. */ | |
2744 | else if (gfc_comp_struct (gfc_current_state ())) | |
2745 | { | |
2746 | m = match_clist_expr (&initializer, ¤t_ts, as); | |
2747 | if (m == MATCH_NO) | |
2748 | gfc_error ("Syntax error in old style initialization of %s at %C", | |
2749 | name); | |
2750 | if (m != MATCH_YES) | |
2751 | goto cleanup; | |
2752 | } | |
2753 | ||
2754 | /* Otherwise we treat the old style initialization just like a | |
2755 | DATA declaration for the current variable. */ | |
2756 | else | |
2757 | return match_old_style_init (name); | |
b4f45d02 | 2758 | } |
2759 | ||
4ee9c684 | 2760 | /* The double colon must be present in order to have initializers. |
2761 | Otherwise the statement is ambiguous with an assignment statement. */ | |
2762 | if (colon_seen) | |
2763 | { | |
2764 | if (gfc_match (" =>") == MATCH_YES) | |
2765 | { | |
4ee9c684 | 2766 | if (!current_attr.pointer) |
2767 | { | |
2768 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
2769 | m = MATCH_ERROR; | |
2770 | goto cleanup; | |
2771 | } | |
2772 | ||
23d075f4 | 2773 | m = match_pointer_init (&initializer, 0); |
4ee9c684 | 2774 | if (m != MATCH_YES) |
2775 | goto cleanup; | |
4ee9c684 | 2776 | } |
2777 | else if (gfc_match_char ('=') == MATCH_YES) | |
2778 | { | |
2779 | if (current_attr.pointer) | |
2780 | { | |
0d2b3c9c | 2781 | gfc_error ("Pointer initialization at %C requires %<=>%>, " |
2782 | "not %<=%>"); | |
4ee9c684 | 2783 | m = MATCH_ERROR; |
2784 | goto cleanup; | |
2785 | } | |
2786 | ||
2787 | m = gfc_match_init_expr (&initializer); | |
2788 | if (m == MATCH_NO) | |
2789 | { | |
2790 | gfc_error ("Expected an initialization expression at %C"); | |
2791 | m = MATCH_ERROR; | |
2792 | } | |
2793 | ||
b3a420c5 | 2794 | if (current_attr.flavor != FL_PARAMETER && gfc_pure (NULL) |
d7cd448a | 2795 | && !gfc_comp_struct (gfc_state_stack->state)) |
4ee9c684 | 2796 | { |
1a9745d2 | 2797 | gfc_error ("Initialization of variable at %C is not allowed in " |
2798 | "a PURE procedure"); | |
4ee9c684 | 2799 | m = MATCH_ERROR; |
2800 | } | |
2801 | ||
c77badf3 | 2802 | if (current_attr.flavor != FL_PARAMETER |
d7cd448a | 2803 | && !gfc_comp_struct (gfc_state_stack->state)) |
c77badf3 | 2804 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
2805 | ||
4ee9c684 | 2806 | if (m != MATCH_YES) |
2807 | goto cleanup; | |
2808 | } | |
8ffad0f9 | 2809 | } |
2810 | ||
2294b616 | 2811 | if (initializer != NULL && current_attr.allocatable |
d7cd448a | 2812 | && gfc_comp_struct (gfc_current_state ())) |
2294b616 | 2813 | { |
1a9745d2 | 2814 | gfc_error ("Initialization of allocatable component at %C is not " |
2815 | "allowed"); | |
2294b616 | 2816 | m = MATCH_ERROR; |
2817 | goto cleanup; | |
2818 | } | |
2819 | ||
87a0366f | 2820 | if (gfc_current_state () == COMP_DERIVED |
2821 | && gfc_current_block ()->attr.pdt_template) | |
2822 | { | |
2823 | gfc_symbol *param; | |
2824 | gfc_find_symbol (name, gfc_current_block ()->f2k_derived, | |
2825 | 0, ¶m); | |
2826 | if (!param && (current_attr.pdt_kind || current_attr.pdt_len)) | |
2827 | { | |
2828 | gfc_error ("The component with KIND or LEN attribute at %C does not " | |
2829 | "not appear in the type parameter list at %L", | |
2830 | &gfc_current_block ()->declared_at); | |
2831 | m = MATCH_ERROR; | |
2832 | goto cleanup; | |
2833 | } | |
2834 | else if (param && !(current_attr.pdt_kind || current_attr.pdt_len)) | |
2835 | { | |
2836 | gfc_error ("The component at %C that appears in the type parameter " | |
2837 | "list at %L has neither the KIND nor LEN attribute", | |
2838 | &gfc_current_block ()->declared_at); | |
2839 | m = MATCH_ERROR; | |
2840 | goto cleanup; | |
2841 | } | |
2842 | else if (as && (current_attr.pdt_kind || current_attr.pdt_len)) | |
2843 | { | |
2844 | gfc_error ("The component at %C which is a type parameter must be " | |
2845 | "a scalar"); | |
2846 | m = MATCH_ERROR; | |
2847 | goto cleanup; | |
2848 | } | |
2849 | else if (param && initializer) | |
2850 | param->value = gfc_copy_expr (initializer); | |
2851 | } | |
2852 | ||
2c4e6da2 | 2853 | /* Before adding a possible initilizer, do a simple check for compatibility |
9737f088 | 2854 | of lhs and rhs types. Assigning a REAL value to a derived type is not a |
2c4e6da2 | 2855 | good thing. */ |
2856 | if (current_ts.type == BT_DERIVED && initializer | |
2857 | && (gfc_numeric_ts (&initializer->ts) | |
2858 | || initializer->ts.type == BT_LOGICAL | |
2859 | || initializer->ts.type == BT_CHARACTER)) | |
2860 | { | |
9737f088 | 2861 | gfc_error ("Incompatible initialization between a derived type " |
2c4e6da2 | 2862 | "entity and an entity with %qs type at %C", |
2863 | gfc_typename (&initializer->ts)); | |
2864 | m = MATCH_ERROR; | |
2865 | goto cleanup; | |
2866 | } | |
2867 | ||
2868 | ||
d9b3f26b | 2869 | /* Add the initializer. Note that it is fine if initializer is |
4ee9c684 | 2870 | NULL here, because we sometimes also need to check if a |
2871 | declaration *must* have an initialization expression. */ | |
d7cd448a | 2872 | if (!gfc_comp_struct (gfc_current_state ())) |
4ee9c684 | 2873 | t = add_init_expr_to_sym (name, &initializer, &var_locus); |
2874 | else | |
d9b3f26b | 2875 | { |
2294b616 | 2876 | if (current_ts.type == BT_DERIVED |
1a9745d2 | 2877 | && !current_attr.pointer && !initializer) |
d9b3f26b | 2878 | initializer = gfc_default_initializer (¤t_ts); |
2879 | t = build_struct (name, cl, &initializer, &as); | |
d7cd448a | 2880 | |
2881 | /* If we match a nested structure definition we expect to see the | |
2882 | * body even if the variable declarations blow up, so we need to keep | |
2883 | * the structure declaration around. */ | |
2884 | if (gfc_new_block && gfc_new_block->attr.flavor == FL_STRUCT) | |
2885 | gfc_commit_symbol (gfc_new_block); | |
d9b3f26b | 2886 | } |
4ee9c684 | 2887 | |
60e19868 | 2888 | m = (t) ? MATCH_YES : MATCH_ERROR; |
4ee9c684 | 2889 | |
2890 | cleanup: | |
2891 | /* Free stuff up and return. */ | |
2892 | gfc_free_expr (initializer); | |
2893 | gfc_free_array_spec (as); | |
2894 | ||
2895 | return m; | |
2896 | } | |
2897 | ||
2898 | ||
d10f89ee | 2899 | /* Match an extended-f77 "TYPESPEC*bytesize"-style kind specification. |
2900 | This assumes that the byte size is equal to the kind number for | |
2901 | non-COMPLEX types, and equal to twice the kind number for COMPLEX. */ | |
4ee9c684 | 2902 | |
2903 | match | |
1a9745d2 | 2904 | gfc_match_old_kind_spec (gfc_typespec *ts) |
4ee9c684 | 2905 | { |
2906 | match m; | |
3bd3b616 | 2907 | int original_kind; |
4ee9c684 | 2908 | |
2909 | if (gfc_match_char ('*') != MATCH_YES) | |
2910 | return MATCH_NO; | |
2911 | ||
3bd3b616 | 2912 | m = gfc_match_small_literal_int (&ts->kind, NULL); |
4ee9c684 | 2913 | if (m != MATCH_YES) |
2914 | return MATCH_ERROR; | |
2915 | ||
b118a35b | 2916 | original_kind = ts->kind; |
2917 | ||
4ee9c684 | 2918 | /* Massage the kind numbers for complex types. */ |
b118a35b | 2919 | if (ts->type == BT_COMPLEX) |
2920 | { | |
2921 | if (ts->kind % 2) | |
1a9745d2 | 2922 | { |
2923 | gfc_error ("Old-style type declaration %s*%d not supported at %C", | |
2924 | gfc_basic_typename (ts->type), original_kind); | |
2925 | return MATCH_ERROR; | |
2926 | } | |
b118a35b | 2927 | ts->kind /= 2; |
2d76519f | 2928 | |
2929 | } | |
2930 | ||
eb106faf | 2931 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
2d76519f | 2932 | ts->kind = 8; |
2933 | ||
2934 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2935 | { | |
2936 | if (ts->kind == 4) | |
2937 | { | |
eb106faf | 2938 | if (flag_real4_kind == 8) |
2d76519f | 2939 | ts->kind = 8; |
eb106faf | 2940 | if (flag_real4_kind == 10) |
2d76519f | 2941 | ts->kind = 10; |
eb106faf | 2942 | if (flag_real4_kind == 16) |
2d76519f | 2943 | ts->kind = 16; |
2944 | } | |
2945 | ||
2946 | if (ts->kind == 8) | |
2947 | { | |
eb106faf | 2948 | if (flag_real8_kind == 4) |
2d76519f | 2949 | ts->kind = 4; |
eb106faf | 2950 | if (flag_real8_kind == 10) |
2d76519f | 2951 | ts->kind = 10; |
eb106faf | 2952 | if (flag_real8_kind == 16) |
2d76519f | 2953 | ts->kind = 16; |
2954 | } | |
b118a35b | 2955 | } |
4ee9c684 | 2956 | |
f2d4ef3b | 2957 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
4ee9c684 | 2958 | { |
b118a35b | 2959 | gfc_error ("Old-style type declaration %s*%d not supported at %C", |
1a9745d2 | 2960 | gfc_basic_typename (ts->type), original_kind); |
4ee9c684 | 2961 | return MATCH_ERROR; |
2962 | } | |
2963 | ||
76e207a9 | 2964 | if (!gfc_notify_std (GFC_STD_GNU, |
2965 | "Nonstandard type declaration %s*%d at %C", | |
60e19868 | 2966 | gfc_basic_typename(ts->type), original_kind)) |
be7f01a1 | 2967 | return MATCH_ERROR; |
2968 | ||
4ee9c684 | 2969 | return MATCH_YES; |
2970 | } | |
2971 | ||
2972 | ||
2973 | /* Match a kind specification. Since kinds are generally optional, we | |
2974 | usually return MATCH_NO if something goes wrong. If a "kind=" | |
2975 | string is found, then we know we have an error. */ | |
2976 | ||
2977 | match | |
67a51c8e | 2978 | gfc_match_kind_spec (gfc_typespec *ts, bool kind_expr_only) |
4ee9c684 | 2979 | { |
67a51c8e | 2980 | locus where, loc; |
4ee9c684 | 2981 | gfc_expr *e; |
2982 | match m, n; | |
c632ff3d | 2983 | char c; |
4ee9c684 | 2984 | |
2985 | m = MATCH_NO; | |
67a51c8e | 2986 | n = MATCH_YES; |
4ee9c684 | 2987 | e = NULL; |
9d958d5b | 2988 | saved_kind_expr = NULL; |
4ee9c684 | 2989 | |
67a51c8e | 2990 | where = loc = gfc_current_locus; |
2991 | ||
2992 | if (kind_expr_only) | |
2993 | goto kind_expr; | |
4ee9c684 | 2994 | |
2995 | if (gfc_match_char ('(') == MATCH_NO) | |
2996 | return MATCH_NO; | |
2997 | ||
2998 | /* Also gobbles optional text. */ | |
2999 | if (gfc_match (" kind = ") == MATCH_YES) | |
3000 | m = MATCH_ERROR; | |
3001 | ||
67a51c8e | 3002 | loc = gfc_current_locus; |
3003 | ||
3004 | kind_expr: | |
9d958d5b | 3005 | |
4ee9c684 | 3006 | n = gfc_match_init_expr (&e); |
67a51c8e | 3007 | |
9d958d5b | 3008 | if (gfc_derived_parameter_expr (e)) |
3009 | { | |
3010 | ts->kind = 0; | |
3011 | saved_kind_expr = gfc_copy_expr (e); | |
3012 | goto close_brackets; | |
3013 | } | |
3014 | ||
4ee9c684 | 3015 | if (n != MATCH_YES) |
67a51c8e | 3016 | { |
077932f9 | 3017 | if (gfc_matching_function) |
67a51c8e | 3018 | { |
8db94b3b | 3019 | /* The function kind expression might include use associated or |
077932f9 | 3020 | imported parameters and try again after the specification |
3021 | expressions..... */ | |
67a51c8e | 3022 | if (gfc_match_char (')') != MATCH_YES) |
3023 | { | |
3024 | gfc_error ("Missing right parenthesis at %C"); | |
3025 | m = MATCH_ERROR; | |
3026 | goto no_match; | |
3027 | } | |
3028 | ||
3029 | gfc_free_expr (e); | |
67a51c8e | 3030 | gfc_undo_symbols (); |
3031 | return MATCH_YES; | |
3032 | } | |
3033 | else | |
3034 | { | |
3035 | /* ....or else, the match is real. */ | |
3036 | if (n == MATCH_NO) | |
3037 | gfc_error ("Expected initialization expression at %C"); | |
3038 | if (n != MATCH_YES) | |
3039 | return MATCH_ERROR; | |
3040 | } | |
3041 | } | |
4ee9c684 | 3042 | |
3043 | if (e->rank != 0) | |
3044 | { | |
3045 | gfc_error ("Expected scalar initialization expression at %C"); | |
3046 | m = MATCH_ERROR; | |
3047 | goto no_match; | |
3048 | } | |
3049 | ||
dc326dc0 | 3050 | if (gfc_extract_int (e, &ts->kind, 1)) |
4ee9c684 | 3051 | { |
4ee9c684 | 3052 | m = MATCH_ERROR; |
3053 | goto no_match; | |
3054 | } | |
3055 | ||
c5d33754 | 3056 | /* Before throwing away the expression, let's see if we had a |
3057 | C interoperable kind (and store the fact). */ | |
3058 | if (e->ts.is_c_interop == 1) | |
3059 | { | |
df084314 | 3060 | /* Mark this as C interoperable if being declared with one |
c5d33754 | 3061 | of the named constants from iso_c_binding. */ |
3062 | ts->is_c_interop = e->ts.is_iso_c; | |
3063 | ts->f90_type = e->ts.f90_type; | |
41084313 | 3064 | if (e->symtree) |
3065 | ts->interop_kind = e->symtree->n.sym; | |
c5d33754 | 3066 | } |
8db94b3b | 3067 | |
4ee9c684 | 3068 | gfc_free_expr (e); |
3069 | e = NULL; | |
3070 | ||
c5d33754 | 3071 | /* Ignore errors to this point, if we've gotten here. This means |
3072 | we ignore the m=MATCH_ERROR from above. */ | |
f2d4ef3b | 3073 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
4ee9c684 | 3074 | { |
3075 | gfc_error ("Kind %d not supported for type %s at %C", ts->kind, | |
3076 | gfc_basic_typename (ts->type)); | |
c632ff3d | 3077 | gfc_current_locus = where; |
3078 | return MATCH_ERROR; | |
4ee9c684 | 3079 | } |
c632ff3d | 3080 | |
209d3778 | 3081 | /* Warn if, e.g., c_int is used for a REAL variable, but not |
3082 | if, e.g., c_double is used for COMPLEX as the standard | |
3083 | explicitly says that the kind type parameter for complex and real | |
3084 | variable is the same, i.e. c_float == c_float_complex. */ | |
3085 | if (ts->f90_type != BT_UNKNOWN && ts->f90_type != ts->type | |
3086 | && !((ts->f90_type == BT_REAL && ts->type == BT_COMPLEX) | |
3087 | || (ts->f90_type == BT_COMPLEX && ts->type == BT_REAL))) | |
6f521718 | 3088 | gfc_warning_now (0, "C kind type parameter is for type %s but type at %L " |
ded233a6 | 3089 | "is %s", gfc_basic_typename (ts->f90_type), &where, |
3090 | gfc_basic_typename (ts->type)); | |
209d3778 | 3091 | |
9d958d5b | 3092 | close_brackets: |
3093 | ||
c632ff3d | 3094 | gfc_gobble_whitespace (); |
e0be6f02 | 3095 | if ((c = gfc_next_ascii_char ()) != ')' |
3096 | && (ts->type != BT_CHARACTER || c != ',')) | |
4ee9c684 | 3097 | { |
c632ff3d | 3098 | if (ts->type == BT_CHARACTER) |
3099 | gfc_error ("Missing right parenthesis or comma at %C"); | |
3100 | else | |
3101 | gfc_error ("Missing right parenthesis at %C"); | |
67a51c8e | 3102 | m = MATCH_ERROR; |
4ee9c684 | 3103 | } |
c5d33754 | 3104 | else |
3105 | /* All tests passed. */ | |
3106 | m = MATCH_YES; | |
4ee9c684 | 3107 | |
c5d33754 | 3108 | if(m == MATCH_ERROR) |
3109 | gfc_current_locus = where; | |
2d76519f | 3110 | |
eb106faf | 3111 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
2d76519f | 3112 | ts->kind = 8; |
3113 | ||
3114 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
3115 | { | |
3116 | if (ts->kind == 4) | |
3117 | { | |
eb106faf | 3118 | if (flag_real4_kind == 8) |
2d76519f | 3119 | ts->kind = 8; |
eb106faf | 3120 | if (flag_real4_kind == 10) |
2d76519f | 3121 | ts->kind = 10; |
eb106faf | 3122 | if (flag_real4_kind == 16) |
2d76519f | 3123 | ts->kind = 16; |
3124 | } | |
3125 | ||
3126 | if (ts->kind == 8) | |
3127 | { | |
eb106faf | 3128 | if (flag_real8_kind == 4) |
2d76519f | 3129 | ts->kind = 4; |
eb106faf | 3130 | if (flag_real8_kind == 10) |
2d76519f | 3131 | ts->kind = 10; |
eb106faf | 3132 | if (flag_real8_kind == 16) |
2d76519f | 3133 | ts->kind = 16; |
3134 | } | |
3135 | } | |
3136 | ||
c5d33754 | 3137 | /* Return what we know from the test(s). */ |
3138 | return m; | |
4ee9c684 | 3139 | |
3140 | no_match: | |
3141 | gfc_free_expr (e); | |
cbb9e6aa | 3142 | gfc_current_locus = where; |
4ee9c684 | 3143 | return m; |
3144 | } | |
3145 | ||
3146 | ||
33399208 | 3147 | static match |
3148 | match_char_kind (int * kind, int * is_iso_c) | |
3149 | { | |
3150 | locus where; | |
3151 | gfc_expr *e; | |
3152 | match m, n; | |
dc326dc0 | 3153 | bool fail; |
33399208 | 3154 | |
3155 | m = MATCH_NO; | |
3156 | e = NULL; | |
3157 | where = gfc_current_locus; | |
3158 | ||
3159 | n = gfc_match_init_expr (&e); | |
c632ff3d | 3160 | |
077932f9 | 3161 | if (n != MATCH_YES && gfc_matching_function) |
c632ff3d | 3162 | { |
077932f9 | 3163 | /* The expression might include use-associated or imported |
8db94b3b | 3164 | parameters and try again after the specification |
077932f9 | 3165 | expressions. */ |
c632ff3d | 3166 | gfc_free_expr (e); |
c632ff3d | 3167 | gfc_undo_symbols (); |
3168 | return MATCH_YES; | |
3169 | } | |
3170 | ||
33399208 | 3171 | if (n == MATCH_NO) |
3172 | gfc_error ("Expected initialization expression at %C"); | |
3173 | if (n != MATCH_YES) | |
3174 | return MATCH_ERROR; | |
3175 | ||
3176 | if (e->rank != 0) | |
3177 | { | |
3178 | gfc_error ("Expected scalar initialization expression at %C"); | |
3179 | m = MATCH_ERROR; | |
3180 | goto no_match; | |
3181 | } | |
3182 | ||
9f96fdfe | 3183 | if (gfc_derived_parameter_expr (e)) |
3184 | { | |
3185 | saved_kind_expr = e; | |
3186 | *kind = 0; | |
3187 | return MATCH_YES; | |
3188 | } | |
3189 | ||
dc326dc0 | 3190 | fail = gfc_extract_int (e, kind, 1); |
33399208 | 3191 | *is_iso_c = e->ts.is_iso_c; |
dc326dc0 | 3192 | if (fail) |
33399208 | 3193 | { |
33399208 | 3194 | m = MATCH_ERROR; |
3195 | goto no_match; | |
3196 | } | |
3197 | ||
3198 | gfc_free_expr (e); | |
3199 | ||
3200 | /* Ignore errors to this point, if we've gotten here. This means | |
3201 | we ignore the m=MATCH_ERROR from above. */ | |
3202 | if (gfc_validate_kind (BT_CHARACTER, *kind, true) < 0) | |
3203 | { | |
3204 | gfc_error ("Kind %d is not supported for CHARACTER at %C", *kind); | |
3205 | m = MATCH_ERROR; | |
3206 | } | |
3207 | else | |
3208 | /* All tests passed. */ | |
3209 | m = MATCH_YES; | |
3210 | ||
3211 | if (m == MATCH_ERROR) | |
3212 | gfc_current_locus = where; | |
8db94b3b | 3213 | |
33399208 | 3214 | /* Return what we know from the test(s). */ |
3215 | return m; | |
3216 | ||
3217 | no_match: | |
3218 | gfc_free_expr (e); | |
3219 | gfc_current_locus = where; | |
3220 | return m; | |
3221 | } | |
3222 | ||
10f5dcc0 | 3223 | |
4ee9c684 | 3224 | /* Match the various kind/length specifications in a CHARACTER |
3225 | declaration. We don't return MATCH_NO. */ | |
3226 | ||
10f5dcc0 | 3227 | match |
3228 | gfc_match_char_spec (gfc_typespec *ts) | |
4ee9c684 | 3229 | { |
33399208 | 3230 | int kind, seen_length, is_iso_c; |
4ee9c684 | 3231 | gfc_charlen *cl; |
3232 | gfc_expr *len; | |
3233 | match m; | |
3e715c81 | 3234 | bool deferred; |
33399208 | 3235 | |
4ee9c684 | 3236 | len = NULL; |
3237 | seen_length = 0; | |
33399208 | 3238 | kind = 0; |
3239 | is_iso_c = 0; | |
3e715c81 | 3240 | deferred = false; |
4ee9c684 | 3241 | |
3242 | /* Try the old-style specification first. */ | |
3243 | old_char_selector = 0; | |
3244 | ||
926b8757 | 3245 | m = match_char_length (&len, &deferred, true); |
4ee9c684 | 3246 | if (m != MATCH_NO) |
3247 | { | |
3248 | if (m == MATCH_YES) | |
3249 | old_char_selector = 1; | |
3250 | seen_length = 1; | |
3251 | goto done; | |
3252 | } | |
3253 | ||
3254 | m = gfc_match_char ('('); | |
3255 | if (m != MATCH_YES) | |
3256 | { | |
c5d33754 | 3257 | m = MATCH_YES; /* Character without length is a single char. */ |
4ee9c684 | 3258 | goto done; |
3259 | } | |
3260 | ||
c5d33754 | 3261 | /* Try the weird case: ( KIND = <int> [ , LEN = <len-param> ] ). */ |
4ee9c684 | 3262 | if (gfc_match (" kind =") == MATCH_YES) |
3263 | { | |
33399208 | 3264 | m = match_char_kind (&kind, &is_iso_c); |
8db94b3b | 3265 | |
4ee9c684 | 3266 | if (m == MATCH_ERROR) |
3267 | goto done; | |
3268 | if (m == MATCH_NO) | |
3269 | goto syntax; | |
3270 | ||
3271 | if (gfc_match (" , len =") == MATCH_NO) | |
3272 | goto rparen; | |
3273 | ||
3e715c81 | 3274 | m = char_len_param_value (&len, &deferred); |
4ee9c684 | 3275 | if (m == MATCH_NO) |
3276 | goto syntax; | |
3277 | if (m == MATCH_ERROR) | |
3278 | goto done; | |
3279 | seen_length = 1; | |
3280 | ||
3281 | goto rparen; | |
3282 | } | |
3283 | ||
f6d0e37a | 3284 | /* Try to match "LEN = <len-param>" or "LEN = <len-param>, KIND = <int>". */ |
4ee9c684 | 3285 | if (gfc_match (" len =") == MATCH_YES) |
3286 | { | |
3e715c81 | 3287 | m = char_len_param_value (&len, &deferred); |
4ee9c684 | 3288 | if (m == MATCH_NO) |
3289 | goto syntax; | |
3290 | if (m == MATCH_ERROR) | |
3291 | goto done; | |
3292 | seen_length = 1; | |
3293 | ||
3294 | if (gfc_match_char (')') == MATCH_YES) | |
3295 | goto done; | |
3296 | ||
3297 | if (gfc_match (" , kind =") != MATCH_YES) | |
3298 | goto syntax; | |
3299 | ||
33399208 | 3300 | if (match_char_kind (&kind, &is_iso_c) == MATCH_ERROR) |
3301 | goto done; | |
4ee9c684 | 3302 | |
3303 | goto rparen; | |
3304 | } | |
3305 | ||
f6d0e37a | 3306 | /* Try to match ( <len-param> ) or ( <len-param> , [ KIND = ] <int> ). */ |
3e715c81 | 3307 | m = char_len_param_value (&len, &deferred); |
4ee9c684 | 3308 | if (m == MATCH_NO) |
3309 | goto syntax; | |
3310 | if (m == MATCH_ERROR) | |
3311 | goto done; | |
3312 | seen_length = 1; | |
3313 | ||
3314 | m = gfc_match_char (')'); | |
3315 | if (m == MATCH_YES) | |
3316 | goto done; | |
3317 | ||
3318 | if (gfc_match_char (',') != MATCH_YES) | |
3319 | goto syntax; | |
3320 | ||
c5d33754 | 3321 | gfc_match (" kind ="); /* Gobble optional text. */ |
4ee9c684 | 3322 | |
33399208 | 3323 | m = match_char_kind (&kind, &is_iso_c); |
4ee9c684 | 3324 | if (m == MATCH_ERROR) |
3325 | goto done; | |
3326 | if (m == MATCH_NO) | |
3327 | goto syntax; | |
3328 | ||
3329 | rparen: | |
3330 | /* Require a right-paren at this point. */ | |
3331 | m = gfc_match_char (')'); | |
3332 | if (m == MATCH_YES) | |
3333 | goto done; | |
3334 | ||
3335 | syntax: | |
3336 | gfc_error ("Syntax error in CHARACTER declaration at %C"); | |
3337 | m = MATCH_ERROR; | |
a3cbe8cc | 3338 | gfc_free_expr (len); |
3339 | return m; | |
4ee9c684 | 3340 | |
3341 | done: | |
8d39570e | 3342 | /* Deal with character functions after USE and IMPORT statements. */ |
3343 | if (gfc_matching_function) | |
077932f9 | 3344 | { |
8d39570e | 3345 | gfc_free_expr (len); |
077932f9 | 3346 | gfc_undo_symbols (); |
3347 | return MATCH_YES; | |
3348 | } | |
3349 | ||
4ee9c684 | 3350 | if (m != MATCH_YES) |
3351 | { | |
3352 | gfc_free_expr (len); | |
3353 | return m; | |
3354 | } | |
3355 | ||
3356 | /* Do some final massaging of the length values. */ | |
d270ce52 | 3357 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
4ee9c684 | 3358 | |
3359 | if (seen_length == 0) | |
9f4d9f83 | 3360 | cl->length = gfc_get_int_expr (gfc_charlen_int_kind, NULL, 1); |
4ee9c684 | 3361 | else |
91f09922 | 3362 | { |
5efb256e | 3363 | /* If gfortran ends up here, then len may be reducible to a constant. |
3364 | Try to do that here. If it does not reduce, simply assign len to | |
3365 | charlen. A complication occurs with user-defined generic functions, | |
3366 | which are not resolved. Use a private namespace to deal with | |
3367 | generic functions. */ | |
3368 | ||
91f09922 | 3369 | if (len && len->expr_type != EXPR_CONSTANT) |
3370 | { | |
5efb256e | 3371 | gfc_namespace *old_ns; |
91f09922 | 3372 | gfc_expr *e; |
5efb256e | 3373 | |
3374 | old_ns = gfc_current_ns; | |
3375 | gfc_current_ns = gfc_get_namespace (NULL, 0); | |
3376 | ||
91f09922 | 3377 | e = gfc_copy_expr (len); |
3378 | gfc_reduce_init_expr (e); | |
3379 | if (e->expr_type == EXPR_CONSTANT) | |
a3903232 | 3380 | { |
3381 | gfc_replace_expr (len, e); | |
3382 | if (mpz_cmp_si (len->value.integer, 0) < 0) | |
3383 | mpz_set_ui (len->value.integer, 0); | |
3384 | } | |
91f09922 | 3385 | else |
3386 | gfc_free_expr (e); | |
5efb256e | 3387 | |
3388 | gfc_free_namespace (gfc_current_ns); | |
3389 | gfc_current_ns = old_ns; | |
91f09922 | 3390 | } |
5efb256e | 3391 | |
3392 | cl->length = len; | |
91f09922 | 3393 | } |
4ee9c684 | 3394 | |
eeebe20b | 3395 | ts->u.cl = cl; |
33399208 | 3396 | ts->kind = kind == 0 ? gfc_default_character_kind : kind; |
3e715c81 | 3397 | ts->deferred = deferred; |
4ee9c684 | 3398 | |
df084314 | 3399 | /* We have to know if it was a C interoperable kind so we can |
c5d33754 | 3400 | do accurate type checking of bind(c) procs, etc. */ |
33399208 | 3401 | if (kind != 0) |
df084314 | 3402 | /* Mark this as C interoperable if being declared with one |
33399208 | 3403 | of the named constants from iso_c_binding. */ |
3404 | ts->is_c_interop = is_iso_c; | |
c5d33754 | 3405 | else if (len != NULL) |
33399208 | 3406 | /* Here, we might have parsed something such as: character(c_char) |
3407 | In this case, the parsing code above grabs the c_char when | |
3408 | looking for the length (line 1690, roughly). it's the last | |
3409 | testcase for parsing the kind params of a character variable. | |
3410 | However, it's not actually the length. this seems like it | |
8db94b3b | 3411 | could be an error. |
33399208 | 3412 | To see if the user used a C interop kind, test the expr |
3413 | of the so called length, and see if it's C interoperable. */ | |
3414 | ts->is_c_interop = len->ts.is_iso_c; | |
8db94b3b | 3415 | |
4ee9c684 | 3416 | return MATCH_YES; |
3417 | } | |
3418 | ||
3419 | ||
d7cd448a | 3420 | /* Matches a RECORD declaration. */ |
3421 | ||
3422 | static match | |
891196d7 | 3423 | match_record_decl (char *name) |
d7cd448a | 3424 | { |
3425 | locus old_loc; | |
3426 | old_loc = gfc_current_locus; | |
891196d7 | 3427 | match m; |
d7cd448a | 3428 | |
891196d7 | 3429 | m = gfc_match (" record /"); |
3430 | if (m == MATCH_YES) | |
d7cd448a | 3431 | { |
cf078427 | 3432 | if (!flag_dec_structure) |
d7cd448a | 3433 | { |
3434 | gfc_current_locus = old_loc; | |
3435 | gfc_error ("RECORD at %C is an extension, enable it with " | |
3436 | "-fdec-structure"); | |
3437 | return MATCH_ERROR; | |
3438 | } | |
891196d7 | 3439 | m = gfc_match (" %n/", name); |
3440 | if (m == MATCH_YES) | |
3441 | return MATCH_YES; | |
d7cd448a | 3442 | } |
3443 | ||
891196d7 | 3444 | gfc_current_locus = old_loc; |
cf078427 | 3445 | if (flag_dec_structure |
891196d7 | 3446 | && (gfc_match (" record% ") == MATCH_YES |
3447 | || gfc_match (" record%t") == MATCH_YES)) | |
3448 | gfc_error ("Structure name expected after RECORD at %C"); | |
3449 | if (m == MATCH_NO) | |
d7cd448a | 3450 | return MATCH_NO; |
891196d7 | 3451 | |
3452 | return MATCH_ERROR; | |
d7cd448a | 3453 | } |
3454 | ||
9d958d5b | 3455 | |
3456 | /* This function uses the gfc_actual_arglist 'type_param_spec_list' as a source | |
3457 | of expressions to substitute into the possibly parameterized expression | |
3458 | 'e'. Using a list is inefficient but should not be too bad since the | |
3459 | number of type parameters is not likely to be large. */ | |
3460 | static bool | |
3461 | insert_parameter_exprs (gfc_expr* e, gfc_symbol* sym ATTRIBUTE_UNUSED, | |
3462 | int* f) | |
3463 | { | |
3464 | gfc_actual_arglist *param; | |
3465 | gfc_expr *copy; | |
3466 | ||
3467 | if (e->expr_type != EXPR_VARIABLE) | |
3468 | return false; | |
3469 | ||
3470 | gcc_assert (e->symtree); | |
3471 | if (e->symtree->n.sym->attr.pdt_kind | |
3472 | || (*f != 0 && e->symtree->n.sym->attr.pdt_len)) | |
3473 | { | |
3474 | for (param = type_param_spec_list; param; param = param->next) | |
3475 | if (strcmp (e->symtree->n.sym->name, param->name) == 0) | |
3476 | break; | |
3477 | ||
3478 | if (param) | |
3479 | { | |
3480 | copy = gfc_copy_expr (param->expr); | |
3481 | *e = *copy; | |
3482 | free (copy); | |
3483 | } | |
3484 | } | |
3485 | ||
3486 | return false; | |
3487 | } | |
3488 | ||
3489 | ||
3490 | bool | |
3491 | gfc_insert_kind_parameter_exprs (gfc_expr *e) | |
3492 | { | |
3493 | return gfc_traverse_expr (e, NULL, &insert_parameter_exprs, 0); | |
3494 | } | |
3495 | ||
3496 | ||
3497 | bool | |
3498 | gfc_insert_parameter_exprs (gfc_expr *e, gfc_actual_arglist *param_list) | |
3499 | { | |
3500 | gfc_actual_arglist *old_param_spec_list = type_param_spec_list; | |
3501 | type_param_spec_list = param_list; | |
3502 | return gfc_traverse_expr (e, NULL, &insert_parameter_exprs, 1); | |
3503 | type_param_spec_list = NULL; | |
3504 | type_param_spec_list = old_param_spec_list; | |
3505 | } | |
3506 | ||
3507 | /* Determines the instance of a parameterized derived type to be used by | |
3508 | matching determining the values of the kind parameters and using them | |
3509 | in the name of the instance. If the instance exists, it is used, otherwise | |
3510 | a new derived type is created. */ | |
3511 | match | |
3512 | gfc_get_pdt_instance (gfc_actual_arglist *param_list, gfc_symbol **sym, | |
3513 | gfc_actual_arglist **ext_param_list) | |
3514 | { | |
3515 | /* The PDT template symbol. */ | |
3516 | gfc_symbol *pdt = *sym; | |
3517 | /* The symbol for the parameter in the template f2k_namespace. */ | |
3518 | gfc_symbol *param; | |
3519 | /* The hoped for instance of the PDT. */ | |
3520 | gfc_symbol *instance; | |
3521 | /* The list of parameters appearing in the PDT declaration. */ | |
3522 | gfc_formal_arglist *type_param_name_list; | |
3523 | /* Used to store the parameter specification list during recursive calls. */ | |
3524 | gfc_actual_arglist *old_param_spec_list; | |
3525 | /* Pointers to the parameter specification being used. */ | |
3526 | gfc_actual_arglist *actual_param; | |
3527 | gfc_actual_arglist *tail = NULL; | |
3528 | /* Used to build up the name of the PDT instance. The prefix uses 4 | |
3529 | characters and each KIND parameter 2 more. Allow 8 of the latter. */ | |
3530 | char name[GFC_MAX_SYMBOL_LEN + 21]; | |
3531 | ||
3532 | bool name_seen = (param_list == NULL); | |
3533 | bool assumed_seen = false; | |
3534 | bool deferred_seen = false; | |
3535 | bool spec_error = false; | |
3536 | int kind_value, i; | |
3537 | gfc_expr *kind_expr; | |
3538 | gfc_component *c1, *c2; | |
3539 | match m; | |
3540 | ||
3541 | type_param_spec_list = NULL; | |
3542 | ||
3543 | type_param_name_list = pdt->formal; | |
3544 | actual_param = param_list; | |
3545 | sprintf (name, "Pdt%s", pdt->name); | |
3546 | ||
3547 | /* Run through the parameter name list and pick up the actual | |
3548 | parameter values or use the default values in the PDT declaration. */ | |
3549 | for (; type_param_name_list; | |
3550 | type_param_name_list = type_param_name_list->next) | |
3551 | { | |
3552 | if (actual_param && actual_param->spec_type != SPEC_EXPLICIT) | |
3553 | { | |
3554 | if (actual_param->spec_type == SPEC_ASSUMED) | |
3555 | spec_error = deferred_seen; | |
3556 | else | |
3557 | spec_error = assumed_seen; | |
3558 | ||
3559 | if (spec_error) | |
3560 | { | |
3561 | gfc_error ("The type parameter spec list at %C cannot contain " | |
3562 | "both ASSUMED and DEFERRED parameters"); | |
87a0366f | 3563 | goto error_return; |
9d958d5b | 3564 | } |
3565 | } | |
3566 | ||
3567 | if (actual_param && actual_param->name) | |
3568 | name_seen = true; | |
3569 | param = type_param_name_list->sym; | |
3570 | ||
f0efd2e8 | 3571 | if (!param || !param->name) |
3572 | continue; | |
3573 | ||
87a0366f | 3574 | c1 = gfc_find_component (pdt, param->name, false, true, NULL); |
1148eb54 | 3575 | /* An error should already have been thrown in resolve.c |
3576 | (resolve_fl_derived0). */ | |
87a0366f | 3577 | if (!pdt->attr.use_assoc && !c1) |
1148eb54 | 3578 | goto error_return; |
87a0366f | 3579 | |
9d958d5b | 3580 | kind_expr = NULL; |
3581 | if (!name_seen) | |
3582 | { | |
87a0366f | 3583 | if (!actual_param && !(c1 && c1->initializer)) |
3584 | { | |
3585 | gfc_error ("The type parameter spec list at %C does not contain " | |
3586 | "enough parameter expressions"); | |
3587 | goto error_return; | |
3588 | } | |
3589 | else if (!actual_param && c1 && c1->initializer) | |
3590 | kind_expr = gfc_copy_expr (c1->initializer); | |
3591 | else if (actual_param && actual_param->spec_type == SPEC_EXPLICIT) | |
9d958d5b | 3592 | kind_expr = gfc_copy_expr (actual_param->expr); |
3593 | } | |
3594 | else | |
3595 | { | |
3596 | actual_param = param_list; | |
3597 | for (;actual_param; actual_param = actual_param->next) | |
3598 | if (actual_param->name | |
3599 | && strcmp (actual_param->name, param->name) == 0) | |
3600 | break; | |
3601 | if (actual_param && actual_param->spec_type == SPEC_EXPLICIT) | |
3602 | kind_expr = gfc_copy_expr (actual_param->expr); | |
3603 | else | |
3604 | { | |
dba5ed0d | 3605 | if (c1->initializer) |
3606 | kind_expr = gfc_copy_expr (c1->initializer); | |
9d958d5b | 3607 | else if (!(actual_param && param->attr.pdt_len)) |
3608 | { | |
4b8290f8 | 3609 | gfc_error ("The derived parameter %qs at %C does not " |
9d958d5b | 3610 | "have a default value", param->name); |
87a0366f | 3611 | goto error_return; |
9d958d5b | 3612 | } |
3613 | } | |
3614 | } | |
3615 | ||
3616 | /* Store the current parameter expressions in a temporary actual | |
3617 | arglist 'list' so that they can be substituted in the corresponding | |
3618 | expressions in the PDT instance. */ | |
3619 | if (type_param_spec_list == NULL) | |
3620 | { | |
3621 | type_param_spec_list = gfc_get_actual_arglist (); | |
3622 | tail = type_param_spec_list; | |
3623 | } | |
3624 | else | |
3625 | { | |
3626 | tail->next = gfc_get_actual_arglist (); | |
3627 | tail = tail->next; | |
3628 | } | |
3629 | tail->name = param->name; | |
3630 | ||
3631 | if (kind_expr) | |
3632 | { | |
9f96fdfe | 3633 | /* Try simplification even for LEN expressions. */ |
3634 | gfc_resolve_expr (kind_expr); | |
3635 | gfc_simplify_expr (kind_expr, 1); | |
87a0366f | 3636 | /* Variable expressions seem to default to BT_PROCEDURE. |
3637 | TODO find out why this is and fix it. */ | |
3638 | if (kind_expr->ts.type != BT_INTEGER | |
3639 | && kind_expr->ts.type != BT_PROCEDURE) | |
3640 | { | |
3641 | gfc_error ("The parameter expression at %C must be of " | |
3642 | "INTEGER type and not %s type", | |
3643 | gfc_basic_typename (kind_expr->ts.type)); | |
3644 | goto error_return; | |
3645 | } | |
3646 | ||
9d958d5b | 3647 | tail->expr = gfc_copy_expr (kind_expr); |
9d958d5b | 3648 | } |
3649 | ||
3650 | if (actual_param) | |
3651 | tail->spec_type = actual_param->spec_type; | |
3652 | ||
3653 | if (!param->attr.pdt_kind) | |
3654 | { | |
87a0366f | 3655 | if (!name_seen && actual_param) |
9d958d5b | 3656 | actual_param = actual_param->next; |
3657 | if (kind_expr) | |
3658 | { | |
3659 | gfc_free_expr (kind_expr); | |
3660 | kind_expr = NULL; | |
3661 | } | |
3662 | continue; | |
3663 | } | |
3664 | ||
3665 | if (actual_param | |
3666 | && (actual_param->spec_type == SPEC_ASSUMED | |
3667 | || actual_param->spec_type == SPEC_DEFERRED)) | |
3668 | { | |
4b8290f8 | 3669 | gfc_error ("The KIND parameter %qs at %C cannot either be " |
9d958d5b | 3670 | "ASSUMED or DEFERRED", param->name); |
87a0366f | 3671 | goto error_return; |
9d958d5b | 3672 | } |
3673 | ||
3674 | if (!kind_expr || !gfc_is_constant_expr (kind_expr)) | |
3675 | { | |
4b8290f8 | 3676 | gfc_error ("The value for the KIND parameter %qs at %C does not " |
9d958d5b | 3677 | "reduce to a constant expression", param->name); |
87a0366f | 3678 | goto error_return; |
9d958d5b | 3679 | } |
3680 | ||
3681 | gfc_extract_int (kind_expr, &kind_value); | |
e9366ef9 | 3682 | sprintf (name + strlen (name), "_%d", kind_value); |
9d958d5b | 3683 | |
3684 | if (!name_seen && actual_param) | |
3685 | actual_param = actual_param->next; | |
3686 | gfc_free_expr (kind_expr); | |
3687 | } | |
3688 | ||
87a0366f | 3689 | if (!name_seen && actual_param) |
3690 | { | |
3691 | gfc_error ("The type parameter spec list at %C contains too many " | |
3692 | "parameter expressions"); | |
3693 | goto error_return; | |
3694 | } | |
3695 | ||
9d958d5b | 3696 | /* Now we search for the PDT instance 'name'. If it doesn't exist, we |
3697 | build it, using 'pdt' as a template. */ | |
3698 | if (gfc_get_symbol (name, pdt->ns, &instance)) | |
3699 | { | |
3700 | gfc_error ("Parameterized derived type at %C is ambiguous"); | |
87a0366f | 3701 | goto error_return; |
9d958d5b | 3702 | } |
3703 | ||
3704 | m = MATCH_YES; | |
3705 | ||
3706 | if (instance->attr.flavor == FL_DERIVED | |
3707 | && instance->attr.pdt_type) | |
3708 | { | |
3709 | instance->refs++; | |
3710 | if (ext_param_list) | |
3711 | *ext_param_list = type_param_spec_list; | |
3712 | *sym = instance; | |
3713 | gfc_commit_symbols (); | |
3714 | return m; | |
3715 | } | |
3716 | ||
3717 | /* Start building the new instance of the parameterized type. */ | |
3718 | gfc_copy_attr (&instance->attr, &pdt->attr, &pdt->declared_at); | |
3719 | instance->attr.pdt_template = 0; | |
3720 | instance->attr.pdt_type = 1; | |
3721 | instance->declared_at = gfc_current_locus; | |
3722 | ||
3723 | /* Add the components, replacing the parameters in all expressions | |
3724 | with the expressions for their values in 'type_param_spec_list'. */ | |
3725 | c1 = pdt->components; | |
3726 | tail = type_param_spec_list; | |
3727 | for (; c1; c1 = c1->next) | |
3728 | { | |
3729 | gfc_add_component (instance, c1->name, &c2); | |
f0efd2e8 | 3730 | |
9d958d5b | 3731 | c2->ts = c1->ts; |
3732 | c2->attr = c1->attr; | |
3733 | ||
f0efd2e8 | 3734 | /* The order of declaration of the type_specs might not be the |
3735 | same as that of the components. */ | |
3736 | if (c1->attr.pdt_kind || c1->attr.pdt_len) | |
3737 | { | |
3738 | for (tail = type_param_spec_list; tail; tail = tail->next) | |
3739 | if (strcmp (c1->name, tail->name) == 0) | |
3740 | break; | |
3741 | } | |
3742 | ||
9d958d5b | 3743 | /* Deal with type extension by recursively calling this function |
3744 | to obtain the instance of the extended type. */ | |
3745 | if (gfc_current_state () != COMP_DERIVED | |
3746 | && c1 == pdt->components | |
3747 | && (c1->ts.type == BT_DERIVED || c1->ts.type == BT_CLASS) | |
3748 | && c1->ts.u.derived && c1->ts.u.derived->attr.pdt_template | |
3749 | && gfc_get_derived_super_type (*sym) == c2->ts.u.derived) | |
3750 | { | |
3751 | gfc_formal_arglist *f; | |
3752 | ||
3753 | old_param_spec_list = type_param_spec_list; | |
3754 | ||
3755 | /* Obtain a spec list appropriate to the extended type..*/ | |
3756 | actual_param = gfc_copy_actual_arglist (type_param_spec_list); | |
3757 | type_param_spec_list = actual_param; | |
3758 | for (f = c1->ts.u.derived->formal; f && f->next; f = f->next) | |
3759 | actual_param = actual_param->next; | |
3760 | if (actual_param) | |
3761 | { | |
3762 | gfc_free_actual_arglist (actual_param->next); | |
3763 | actual_param->next = NULL; | |
3764 | } | |
3765 | ||
3766 | /* Now obtain the PDT instance for the extended type. */ | |
3767 | c2->param_list = type_param_spec_list; | |
3768 | m = gfc_get_pdt_instance (type_param_spec_list, &c2->ts.u.derived, | |
3769 | NULL); | |
3770 | type_param_spec_list = old_param_spec_list; | |
3771 | ||
3772 | c2->ts.u.derived->refs++; | |
3773 | gfc_set_sym_referenced (c2->ts.u.derived); | |
3774 | ||
3775 | /* Set extension level. */ | |
3776 | if (c2->ts.u.derived->attr.extension == 255) | |
3777 | { | |
3778 | /* Since the extension field is 8 bit wide, we can only have | |
3779 | up to 255 extension levels. */ | |
3780 | gfc_error ("Maximum extension level reached with type %qs at %L", | |
3781 | c2->ts.u.derived->name, | |
3782 | &c2->ts.u.derived->declared_at); | |
87a0366f | 3783 | goto error_return; |
9d958d5b | 3784 | } |
3785 | instance->attr.extension = c2->ts.u.derived->attr.extension + 1; | |
3786 | ||
9d958d5b | 3787 | continue; |
3788 | } | |
3789 | ||
3790 | /* Set the component kind using the parameterized expression. */ | |
f0efd2e8 | 3791 | if ((c1->ts.kind == 0 || c1->ts.type == BT_CHARACTER) |
3792 | && c1->kind_expr != NULL) | |
9d958d5b | 3793 | { |
3794 | gfc_expr *e = gfc_copy_expr (c1->kind_expr); | |
3795 | gfc_insert_kind_parameter_exprs (e); | |
9f96fdfe | 3796 | gfc_simplify_expr (e, 1); |
9d958d5b | 3797 | gfc_extract_int (e, &c2->ts.kind); |
3798 | gfc_free_expr (e); | |
87a0366f | 3799 | if (gfc_validate_kind (c2->ts.type, c2->ts.kind, true) < 0) |
3800 | { | |
3801 | gfc_error ("Kind %d not supported for type %s at %C", | |
3802 | c2->ts.kind, gfc_basic_typename (c2->ts.type)); | |
3803 | goto error_return; | |
3804 | } | |
9d958d5b | 3805 | } |
3806 | ||
3807 | /* Similarly, set the string length if parameterized. */ | |
3808 | if (c1->ts.type == BT_CHARACTER | |
3809 | && c1->ts.u.cl->length | |
3810 | && gfc_derived_parameter_expr (c1->ts.u.cl->length)) | |
3811 | { | |
3812 | gfc_expr *e; | |
3813 | e = gfc_copy_expr (c1->ts.u.cl->length); | |
3814 | gfc_insert_kind_parameter_exprs (e); | |
3815 | gfc_simplify_expr (e, 1); | |
3816 | c2->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); | |
3817 | c2->ts.u.cl->length = e; | |
3818 | c2->attr.pdt_string = 1; | |
3819 | } | |
3820 | ||
3821 | /* Set up either the KIND/LEN initializer, if constant, | |
3822 | or the parameterized expression. Use the template | |
3823 | initializer if one is not already set in this instance. */ | |
3824 | if (c2->attr.pdt_kind || c2->attr.pdt_len) | |
3825 | { | |
3826 | if (tail && tail->expr && gfc_is_constant_expr (tail->expr)) | |
3827 | c2->initializer = gfc_copy_expr (tail->expr); | |
3828 | else if (tail && tail->expr) | |
3829 | { | |
3830 | c2->param_list = gfc_get_actual_arglist (); | |
3831 | c2->param_list->name = tail->name; | |
3832 | c2->param_list->expr = gfc_copy_expr (tail->expr); | |
3833 | c2->param_list->next = NULL; | |
3834 | } | |
3835 | ||
3836 | if (!c2->initializer && c1->initializer) | |
3837 | c2->initializer = gfc_copy_expr (c1->initializer); | |
9d958d5b | 3838 | } |
3839 | ||
3840 | /* Copy the array spec. */ | |
3841 | c2->as = gfc_copy_array_spec (c1->as); | |
3842 | if (c1->ts.type == BT_CLASS) | |
3843 | CLASS_DATA (c2)->as = gfc_copy_array_spec (CLASS_DATA (c1)->as); | |
3844 | ||
3845 | /* Determine if an array spec is parameterized. If so, substitute | |
3846 | in the parameter expressions for the bounds and set the pdt_array | |
3847 | attribute. Notice that this attribute must be unconditionally set | |
3848 | if this is an array of parameterized character length. */ | |
3849 | if (c1->as && c1->as->type == AS_EXPLICIT) | |
3850 | { | |
3851 | bool pdt_array = false; | |
3852 | ||
3853 | /* Are the bounds of the array parameterized? */ | |
3854 | for (i = 0; i < c1->as->rank; i++) | |
3855 | { | |
3856 | if (gfc_derived_parameter_expr (c1->as->lower[i])) | |
3857 | pdt_array = true; | |
3858 | if (gfc_derived_parameter_expr (c1->as->upper[i])) | |
3859 | pdt_array = true; | |
3860 | } | |
3861 | ||
3862 | /* If they are, free the expressions for the bounds and | |
3863 | replace them with the template expressions with substitute | |
3864 | values. */ | |
3865 | for (i = 0; pdt_array && i < c1->as->rank; i++) | |
3866 | { | |
3867 | gfc_expr *e; | |
3868 | e = gfc_copy_expr (c1->as->lower[i]); | |
3869 | gfc_insert_kind_parameter_exprs (e); | |
3870 | gfc_simplify_expr (e, 1); | |
3871 | gfc_free_expr (c2->as->lower[i]); | |
3872 | c2->as->lower[i] = e; | |
3873 | e = gfc_copy_expr (c1->as->upper[i]); | |
3874 | gfc_insert_kind_parameter_exprs (e); | |
3875 | gfc_simplify_expr (e, 1); | |
3876 | gfc_free_expr (c2->as->upper[i]); | |
3877 | c2->as->upper[i] = e; | |
3878 | } | |
3879 | c2->attr.pdt_array = pdt_array ? 1 : c2->attr.pdt_string; | |
8534bf8a | 3880 | if (c1->initializer) |
3881 | { | |
3882 | c2->initializer = gfc_copy_expr (c1->initializer); | |
3883 | gfc_insert_kind_parameter_exprs (c2->initializer); | |
3884 | gfc_simplify_expr (c2->initializer, 1); | |
3885 | } | |
9d958d5b | 3886 | } |
3887 | ||
3888 | /* Recurse into this function for PDT components. */ | |
3889 | if ((c1->ts.type == BT_DERIVED || c1->ts.type == BT_CLASS) | |
3890 | && c1->ts.u.derived && c1->ts.u.derived->attr.pdt_template) | |
3891 | { | |
3892 | gfc_actual_arglist *params; | |
3893 | /* The component in the template has a list of specification | |
3894 | expressions derived from its declaration. */ | |
3895 | params = gfc_copy_actual_arglist (c1->param_list); | |
3896 | actual_param = params; | |
3897 | /* Substitute the template parameters with the expressions | |
3898 | from the specification list. */ | |
3899 | for (;actual_param; actual_param = actual_param->next) | |
3900 | gfc_insert_parameter_exprs (actual_param->expr, | |
3901 | type_param_spec_list); | |
3902 | ||
3903 | /* Now obtain the PDT instance for the component. */ | |
3904 | old_param_spec_list = type_param_spec_list; | |
3905 | m = gfc_get_pdt_instance (params, &c2->ts.u.derived, NULL); | |
3906 | type_param_spec_list = old_param_spec_list; | |
3907 | ||
3908 | c2->param_list = params; | |
d11013dc | 3909 | if (!(c2->attr.pointer || c2->attr.allocatable)) |
3910 | c2->initializer = gfc_default_initializer (&c2->ts); | |
3911 | ||
3912 | if (c2->attr.allocatable) | |
3913 | instance->attr.alloc_comp = 1; | |
9d958d5b | 3914 | } |
3915 | } | |
3916 | ||
3917 | gfc_commit_symbol (instance); | |
3918 | if (ext_param_list) | |
3919 | *ext_param_list = type_param_spec_list; | |
3920 | *sym = instance; | |
3921 | return m; | |
87a0366f | 3922 | |
3923 | error_return: | |
3924 | gfc_free_actual_arglist (type_param_spec_list); | |
3925 | return MATCH_ERROR; | |
9d958d5b | 3926 | } |
3927 | ||
3928 | ||
e8152f13 | 3929 | /* Matches a declaration-type-spec (F03:R502). If successful, sets the ts |
3930 | structure to the matched specification. This is necessary for FUNCTION and | |
4ee9c684 | 3931 | IMPLICIT statements. |
3932 | ||
e14bee04 | 3933 | If implicit_flag is nonzero, then we don't check for the optional |
39351103 | 3934 | kind specification. Not doing so is needed for matching an IMPLICIT |
4ee9c684 | 3935 | statement correctly. */ |
3936 | ||
67a51c8e | 3937 | match |
e8152f13 | 3938 | gfc_match_decl_type_spec (gfc_typespec *ts, int implicit_flag) |
4ee9c684 | 3939 | { |
3940 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c2958b6b | 3941 | gfc_symbol *sym, *dt_sym; |
4ee9c684 | 3942 | match m; |
e0be6f02 | 3943 | char c; |
f446fb22 | 3944 | bool seen_deferred_kind, matched_type; |
c2958b6b | 3945 | const char *dt_name; |
4ee9c684 | 3946 | |
9d958d5b | 3947 | decl_type_param_list = NULL; |
3948 | ||
077932f9 | 3949 | /* A belt and braces check that the typespec is correctly being treated |
3950 | as a deferred characteristic association. */ | |
3951 | seen_deferred_kind = (gfc_current_state () == COMP_FUNCTION) | |
8d39570e | 3952 | && (gfc_current_block ()->result->ts.kind == -1) |
3953 | && (ts->kind == -1); | |
4ee9c684 | 3954 | gfc_clear_ts (ts); |
077932f9 | 3955 | if (seen_deferred_kind) |
3956 | ts->kind = -1; | |
4ee9c684 | 3957 | |
c5d33754 | 3958 | /* Clear the current binding label, in case one is given. */ |
7b2060ba | 3959 | curr_binding_label = NULL; |
c5d33754 | 3960 | |
25b29122 | 3961 | if (gfc_match (" byte") == MATCH_YES) |
3962 | { | |
60e19868 | 3963 | if (!gfc_notify_std (GFC_STD_GNU, "BYTE type at %C")) |
25b29122 | 3964 | return MATCH_ERROR; |
3965 | ||
3966 | if (gfc_validate_kind (BT_INTEGER, 1, true) < 0) | |
3967 | { | |
3968 | gfc_error ("BYTE type used at %C " | |
3969 | "is not available on the target machine"); | |
3970 | return MATCH_ERROR; | |
3971 | } | |
e14bee04 | 3972 | |
25b29122 | 3973 | ts->type = BT_INTEGER; |
3974 | ts->kind = 1; | |
3975 | return MATCH_YES; | |
3976 | } | |
3977 | ||
f446fb22 | 3978 | |
8c2d8d6d | 3979 | m = gfc_match (" type ("); |
f446fb22 | 3980 | matched_type = (m == MATCH_YES); |
8c2d8d6d | 3981 | if (matched_type) |
3982 | { | |
3983 | gfc_gobble_whitespace (); | |
3984 | if (gfc_peek_ascii_char () == '*') | |
3985 | { | |
3986 | if ((m = gfc_match ("*)")) != MATCH_YES) | |
3987 | return m; | |
d7cd448a | 3988 | if (gfc_comp_struct (gfc_current_state ())) |
8c2d8d6d | 3989 | { |
3990 | gfc_error ("Assumed type at %C is not allowed for components"); | |
3991 | return MATCH_ERROR; | |
3992 | } | |
2e2156cf | 3993 | if (!gfc_notify_std (GFC_STD_F2018, "Assumed type at %C")) |
8c2d8d6d | 3994 | return MATCH_ERROR; |
3995 | ts->type = BT_ASSUMED; | |
3996 | return MATCH_YES; | |
3997 | } | |
3998 | ||
3999 | m = gfc_match ("%n", name); | |
4000 | matched_type = (m == MATCH_YES); | |
4001 | } | |
4002 | ||
f446fb22 | 4003 | if ((matched_type && strcmp ("integer", name) == 0) |
4004 | || (!matched_type && gfc_match (" integer") == MATCH_YES)) | |
4ee9c684 | 4005 | { |
4006 | ts->type = BT_INTEGER; | |
b8a891cb | 4007 | ts->kind = gfc_default_integer_kind; |
4ee9c684 | 4008 | goto get_kind; |
4009 | } | |
4010 | ||
f446fb22 | 4011 | if ((matched_type && strcmp ("character", name) == 0) |
4012 | || (!matched_type && gfc_match (" character") == MATCH_YES)) | |
4ee9c684 | 4013 | { |
f446fb22 | 4014 | if (matched_type |
60e19868 | 4015 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
4016 | "intrinsic-type-spec at %C")) | |
f446fb22 | 4017 | return MATCH_ERROR; |
4018 | ||
4ee9c684 | 4019 | ts->type = BT_CHARACTER; |
39351103 | 4020 | if (implicit_flag == 0) |
f446fb22 | 4021 | m = gfc_match_char_spec (ts); |
39351103 | 4022 | else |
f446fb22 | 4023 | m = MATCH_YES; |
4024 | ||
4025 | if (matched_type && m == MATCH_YES && gfc_match_char (')') != MATCH_YES) | |
4026 | m = MATCH_ERROR; | |
4027 | ||
4028 | return m; | |
4ee9c684 | 4029 | } |
4030 | ||
f446fb22 | 4031 | if ((matched_type && strcmp ("real", name) == 0) |
4032 | || (!matched_type && gfc_match (" real") == MATCH_YES)) | |
4ee9c684 | 4033 | { |
4034 | ts->type = BT_REAL; | |
b8a891cb | 4035 | ts->kind = gfc_default_real_kind; |
4ee9c684 | 4036 | goto get_kind; |
4037 | } | |
4038 | ||
f446fb22 | 4039 | if ((matched_type |
4040 | && (strcmp ("doubleprecision", name) == 0 | |
4041 | || (strcmp ("double", name) == 0 | |
4042 | && gfc_match (" precision") == MATCH_YES))) | |
4043 | || (!matched_type && gfc_match (" double precision") == MATCH_YES)) | |
4ee9c684 | 4044 | { |
f446fb22 | 4045 | if (matched_type |
60e19868 | 4046 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
4047 | "intrinsic-type-spec at %C")) | |
f446fb22 | 4048 | return MATCH_ERROR; |
4049 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
4050 | return MATCH_ERROR; | |
4051 | ||
4ee9c684 | 4052 | ts->type = BT_REAL; |
b8a891cb | 4053 | ts->kind = gfc_default_double_kind; |
4ee9c684 | 4054 | return MATCH_YES; |
4055 | } | |
4056 | ||
f446fb22 | 4057 | if ((matched_type && strcmp ("complex", name) == 0) |
4058 | || (!matched_type && gfc_match (" complex") == MATCH_YES)) | |
4ee9c684 | 4059 | { |
4060 | ts->type = BT_COMPLEX; | |
b8a891cb | 4061 | ts->kind = gfc_default_complex_kind; |
4ee9c684 | 4062 | goto get_kind; |
4063 | } | |
4064 | ||
f446fb22 | 4065 | if ((matched_type |
4066 | && (strcmp ("doublecomplex", name) == 0 | |
4067 | || (strcmp ("double", name) == 0 | |
4068 | && gfc_match (" complex") == MATCH_YES))) | |
4069 | || (!matched_type && gfc_match (" double complex") == MATCH_YES)) | |
4ee9c684 | 4070 | { |
60e19868 | 4071 | if (!gfc_notify_std (GFC_STD_GNU, "DOUBLE COMPLEX at %C")) |
f446fb22 | 4072 | return MATCH_ERROR; |
4073 | ||
4074 | if (matched_type | |
60e19868 | 4075 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
4076 | "intrinsic-type-spec at %C")) | |
f446fb22 | 4077 | return MATCH_ERROR; |
4078 | ||
4079 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
be7f01a1 | 4080 | return MATCH_ERROR; |
4081 | ||
4ee9c684 | 4082 | ts->type = BT_COMPLEX; |
b8a891cb | 4083 | ts->kind = gfc_default_double_kind; |
4ee9c684 | 4084 | return MATCH_YES; |
4085 | } | |
4086 | ||
f446fb22 | 4087 | if ((matched_type && strcmp ("logical", name) == 0) |
4088 | || (!matched_type && gfc_match (" logical") == MATCH_YES)) | |
4ee9c684 | 4089 | { |
4090 | ts->type = BT_LOGICAL; | |
b8a891cb | 4091 | ts->kind = gfc_default_logical_kind; |
4ee9c684 | 4092 | goto get_kind; |
4093 | } | |
4094 | ||
f446fb22 | 4095 | if (matched_type) |
9d958d5b | 4096 | { |
4097 | m = gfc_match_actual_arglist (1, &decl_type_param_list, true); | |
4098 | if (m == MATCH_ERROR) | |
4099 | return m; | |
4100 | ||
f446fb22 | 4101 | m = gfc_match_char (')'); |
9d958d5b | 4102 | } |
f446fb22 | 4103 | |
d7cd448a | 4104 | if (m != MATCH_YES) |
4105 | m = match_record_decl (name); | |
4106 | ||
4107 | if (matched_type || m == MATCH_YES) | |
4108 | { | |
4109 | ts->type = BT_DERIVED; | |
4110 | /* We accept record/s/ or type(s) where s is a structure, but we | |
4111 | * don't need all the extra derived-type stuff for structures. */ | |
4112 | if (gfc_find_symbol (gfc_dt_upper_string (name), NULL, 1, &sym)) | |
4113 | { | |
1b7008c4 | 4114 | gfc_error ("Type name %qs at %C is ambiguous", name); |
d7cd448a | 4115 | return MATCH_ERROR; |
4116 | } | |
9d958d5b | 4117 | |
4118 | if (sym && sym->attr.flavor == FL_DERIVED | |
4119 | && sym->attr.pdt_template | |
4120 | && gfc_current_state () != COMP_DERIVED) | |
4121 | { | |
4122 | m = gfc_get_pdt_instance (decl_type_param_list, &sym, NULL); | |
4123 | if (m != MATCH_YES) | |
4124 | return m; | |
4125 | gcc_assert (!sym->attr.pdt_template && sym->attr.pdt_type); | |
4126 | ts->u.derived = sym; | |
4127 | strcpy (name, gfc_dt_lower_string (sym->name)); | |
4128 | } | |
4129 | ||
d7cd448a | 4130 | if (sym && sym->attr.flavor == FL_STRUCT) |
4131 | { | |
4132 | ts->u.derived = sym; | |
4133 | return MATCH_YES; | |
4134 | } | |
4135 | /* Actually a derived type. */ | |
4136 | } | |
4137 | ||
1de1b1a9 | 4138 | else |
8ca7f89c | 4139 | { |
d7cd448a | 4140 | /* Match nested STRUCTURE declarations; only valid within another |
891196d7 | 4141 | structure declaration. */ |
cf078427 | 4142 | if (flag_dec_structure |
891196d7 | 4143 | && (gfc_current_state () == COMP_STRUCTURE |
4144 | || gfc_current_state () == COMP_MAP)) | |
4145 | { | |
4146 | m = gfc_match (" structure"); | |
4147 | if (m == MATCH_YES) | |
4148 | { | |
4149 | m = gfc_match_structure_decl (); | |
4150 | if (m == MATCH_YES) | |
4151 | { | |
4152 | /* gfc_new_block is updated by match_structure_decl. */ | |
4153 | ts->type = BT_DERIVED; | |
4154 | ts->u.derived = gfc_new_block; | |
4155 | return MATCH_YES; | |
4156 | } | |
4157 | } | |
4158 | if (m == MATCH_ERROR) | |
4159 | return MATCH_ERROR; | |
4160 | } | |
d7cd448a | 4161 | |
fa102e56 | 4162 | /* Match CLASS declarations. */ |
4163 | m = gfc_match (" class ( * )"); | |
4164 | if (m == MATCH_ERROR) | |
4165 | return MATCH_ERROR; | |
4166 | else if (m == MATCH_YES) | |
4167 | { | |
a90fe829 | 4168 | gfc_symbol *upe; |
4169 | gfc_symtree *st; | |
4170 | ts->type = BT_CLASS; | |
8db94b3b | 4171 | gfc_find_symbol ("STAR", gfc_current_ns, 1, &upe); |
a90fe829 | 4172 | if (upe == NULL) |
4173 | { | |
8db94b3b | 4174 | upe = gfc_new_symbol ("STAR", gfc_current_ns); |
4175 | st = gfc_new_symtree (&gfc_current_ns->sym_root, "STAR"); | |
a90fe829 | 4176 | st->n.sym = upe; |
4177 | gfc_set_sym_referenced (upe); | |
4178 | upe->refs++; | |
4179 | upe->ts.type = BT_VOID; | |
4180 | upe->attr.unlimited_polymorphic = 1; | |
4181 | /* This is essential to force the construction of | |
4182 | unlimited polymorphic component class containers. */ | |
4183 | upe->attr.zero_comp = 1; | |
76e207a9 | 4184 | if (!gfc_add_flavor (&upe->attr, FL_DERIVED, NULL, |
60e19868 | 4185 | &gfc_current_locus)) |
f7b2c82b | 4186 | return MATCH_ERROR; |
4187 | } | |
a90fe829 | 4188 | else |
4189 | { | |
f7b2c82b | 4190 | st = gfc_get_tbp_symtree (&gfc_current_ns->sym_root, "STAR"); |
a90fe829 | 4191 | st->n.sym = upe; |
4192 | upe->refs++; | |
4193 | } | |
4194 | ts->u.derived = upe; | |
4195 | return m; | |
4196 | } | |
fa102e56 | 4197 | |
9d958d5b | 4198 | m = gfc_match (" class ("); |
4199 | ||
4200 | if (m == MATCH_YES) | |
4201 | m = gfc_match ("%n", name); | |
4202 | else | |
4203 | return m; | |
4204 | ||
8ca7f89c | 4205 | if (m != MATCH_YES) |
4206 | return m; | |
1de1b1a9 | 4207 | ts->type = BT_CLASS; |
8ca7f89c | 4208 | |
60e19868 | 4209 | if (!gfc_notify_std (GFC_STD_F2003, "CLASS statement at %C")) |
e8152f13 | 4210 | return MATCH_ERROR; |
9d958d5b | 4211 | |
4212 | m = gfc_match_actual_arglist (1, &decl_type_param_list, true); | |
4213 | if (m == MATCH_ERROR) | |
4214 | return m; | |
4215 | ||
4216 | m = gfc_match_char (')'); | |
4217 | if (m != MATCH_YES) | |
4218 | return m; | |
8ca7f89c | 4219 | } |
4ee9c684 | 4220 | |
077932f9 | 4221 | /* Defer association of the derived type until the end of the |
4222 | specification block. However, if the derived type can be | |
8db94b3b | 4223 | found, add it to the typespec. */ |
077932f9 | 4224 | if (gfc_matching_function) |
67a51c8e | 4225 | { |
eeebe20b | 4226 | ts->u.derived = NULL; |
077932f9 | 4227 | if (gfc_current_state () != COMP_INTERFACE |
4228 | && !gfc_find_symbol (name, NULL, 1, &sym) && sym) | |
c2958b6b | 4229 | { |
4230 | sym = gfc_find_dt_in_generic (sym); | |
4231 | ts->u.derived = sym; | |
4232 | } | |
67a51c8e | 4233 | return MATCH_YES; |
4234 | } | |
4235 | ||
4236 | /* Search for the name but allow the components to be defined later. If | |
4237 | type = -1, this typespec has been seen in a function declaration but | |
c2958b6b | 4238 | the type could not be accessed at that point. The actual derived type is |
df084314 | 4239 | stored in a symtree with the first letter of the name capitalized; the |
c2958b6b | 4240 | symtree with the all lower-case name contains the associated |
4241 | generic function. */ | |
d7cd448a | 4242 | dt_name = gfc_dt_upper_string (name); |
077932f9 | 4243 | sym = NULL; |
c2958b6b | 4244 | dt_sym = NULL; |
4245 | if (ts->kind != -1) | |
4ee9c684 | 4246 | { |
c2958b6b | 4247 | gfc_get_ha_symbol (name, &sym); |
4248 | if (sym->generic && gfc_find_symbol (dt_name, NULL, 0, &dt_sym)) | |
4249 | { | |
716da296 | 4250 | gfc_error ("Type name %qs at %C is ambiguous", name); |
c2958b6b | 4251 | return MATCH_ERROR; |
4252 | } | |
4253 | if (sym->generic && !dt_sym) | |
4254 | dt_sym = gfc_find_dt_in_generic (sym); | |
87a0366f | 4255 | |
4256 | /* Host associated PDTs can get confused with their constructors | |
4257 | because they ar instantiated in the template's namespace. */ | |
4258 | if (!dt_sym) | |
4259 | { | |
4260 | if (gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
4261 | { | |
4262 | gfc_error ("Type name %qs at %C is ambiguous", name); | |
4263 | return MATCH_ERROR; | |
4264 | } | |
4265 | if (dt_sym && !dt_sym->attr.pdt_type) | |
4266 | dt_sym = NULL; | |
4267 | } | |
4ee9c684 | 4268 | } |
67a51c8e | 4269 | else if (ts->kind == -1) |
4270 | { | |
077932f9 | 4271 | int iface = gfc_state_stack->previous->state != COMP_INTERFACE |
4272 | || gfc_current_ns->has_import_set; | |
c2958b6b | 4273 | gfc_find_symbol (name, NULL, iface, &sym); |
4274 | if (sym && sym->generic && gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
8db94b3b | 4275 | { |
716da296 | 4276 | gfc_error ("Type name %qs at %C is ambiguous", name); |
67a51c8e | 4277 | return MATCH_ERROR; |
4278 | } | |
c2958b6b | 4279 | if (sym && sym->generic && !dt_sym) |
4280 | dt_sym = gfc_find_dt_in_generic (sym); | |
67a51c8e | 4281 | |
077932f9 | 4282 | ts->kind = 0; |
67a51c8e | 4283 | if (sym == NULL) |
4284 | return MATCH_NO; | |
4285 | } | |
4ee9c684 | 4286 | |
d7cd448a | 4287 | if ((sym->attr.flavor != FL_UNKNOWN && sym->attr.flavor != FL_STRUCT |
c2958b6b | 4288 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.generic)) |
4289 | || sym->attr.subroutine) | |
4290 | { | |
e87256b0 | 4291 | gfc_error ("Type name %qs at %C conflicts with previously declared " |
4292 | "entity at %L, which has the same name", name, | |
4293 | &sym->declared_at); | |
c2958b6b | 4294 | return MATCH_ERROR; |
4295 | } | |
4ee9c684 | 4296 | |
9d958d5b | 4297 | if (sym && sym->attr.flavor == FL_DERIVED |
4298 | && sym->attr.pdt_template | |
4299 | && gfc_current_state () != COMP_DERIVED) | |
87a0366f | 4300 | { |
4301 | m = gfc_get_pdt_instance (decl_type_param_list, &sym, NULL); | |
4302 | if (m != MATCH_YES) | |
4303 | return m; | |
4304 | gcc_assert (!sym->attr.pdt_template && sym->attr.pdt_type); | |
4305 | ts->u.derived = sym; | |
4306 | strcpy (name, gfc_dt_lower_string (sym->name)); | |
4307 | } | |
9d958d5b | 4308 | |
72bec0a3 | 4309 | gfc_save_symbol_data (sym); |
077932f9 | 4310 | gfc_set_sym_referenced (sym); |
c2958b6b | 4311 | if (!sym->attr.generic |
60e19868 | 4312 | && !gfc_add_generic (&sym->attr, sym->name, NULL)) |
c2958b6b | 4313 | return MATCH_ERROR; |
4314 | ||
4315 | if (!sym->attr.function | |
60e19868 | 4316 | && !gfc_add_function (&sym->attr, sym->name, NULL)) |
c2958b6b | 4317 | return MATCH_ERROR; |
4318 | ||
9d958d5b | 4319 | if (dt_sym && dt_sym->attr.flavor == FL_DERIVED |
4320 | && dt_sym->attr.pdt_template | |
4321 | && gfc_current_state () != COMP_DERIVED) | |
4322 | { | |
4323 | m = gfc_get_pdt_instance (decl_type_param_list, &dt_sym, NULL); | |
4324 | if (m != MATCH_YES) | |
4325 | return m; | |
4326 | gcc_assert (!dt_sym->attr.pdt_template && dt_sym->attr.pdt_type); | |
4327 | } | |
4328 | ||
c2958b6b | 4329 | if (!dt_sym) |
4330 | { | |
4331 | gfc_interface *intr, *head; | |
4332 | ||
4333 | /* Use upper case to save the actual derived-type symbol. */ | |
4334 | gfc_get_symbol (dt_name, NULL, &dt_sym); | |
dc326dc0 | 4335 | dt_sym->name = gfc_get_string ("%s", sym->name); |
c2958b6b | 4336 | head = sym->generic; |
4337 | intr = gfc_get_interface (); | |
4338 | intr->sym = dt_sym; | |
4339 | intr->where = gfc_current_locus; | |
4340 | intr->next = head; | |
4341 | sym->generic = intr; | |
4342 | sym->attr.if_source = IFSRC_DECL; | |
4343 | } | |
72bec0a3 | 4344 | else |
4345 | gfc_save_symbol_data (dt_sym); | |
c2958b6b | 4346 | |
4347 | gfc_set_sym_referenced (dt_sym); | |
4348 | ||
d7cd448a | 4349 | if (dt_sym->attr.flavor != FL_DERIVED && dt_sym->attr.flavor != FL_STRUCT |
60e19868 | 4350 | && !gfc_add_flavor (&dt_sym->attr, FL_DERIVED, sym->name, NULL)) |
c2958b6b | 4351 | return MATCH_ERROR; |
4352 | ||
4353 | ts->u.derived = dt_sym; | |
4ee9c684 | 4354 | |
4355 | return MATCH_YES; | |
4356 | ||
4357 | get_kind: | |
f446fb22 | 4358 | if (matched_type |
60e19868 | 4359 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
4360 | "intrinsic-type-spec at %C")) | |
f446fb22 | 4361 | return MATCH_ERROR; |
4362 | ||
4ee9c684 | 4363 | /* For all types except double, derived and character, look for an |
4364 | optional kind specifier. MATCH_NO is actually OK at this point. */ | |
39351103 | 4365 | if (implicit_flag == 1) |
f446fb22 | 4366 | { |
4367 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
4368 | return MATCH_ERROR; | |
4369 | ||
4370 | return MATCH_YES; | |
4371 | } | |
4ee9c684 | 4372 | |
18f3698a | 4373 | if (gfc_current_form == FORM_FREE) |
4374 | { | |
2c89e2a0 | 4375 | c = gfc_peek_ascii_char (); |
4376 | if (!gfc_is_whitespace (c) && c != '*' && c != '(' | |
1a9745d2 | 4377 | && c != ':' && c != ',') |
f446fb22 | 4378 | { |
4379 | if (matched_type && c == ')') | |
4380 | { | |
4381 | gfc_next_ascii_char (); | |
4382 | return MATCH_YES; | |
4383 | } | |
4384 | return MATCH_NO; | |
4385 | } | |
18f3698a | 4386 | } |
4387 | ||
67a51c8e | 4388 | m = gfc_match_kind_spec (ts, false); |
4ee9c684 | 4389 | if (m == MATCH_NO && ts->type != BT_CHARACTER) |
9627a89d | 4390 | { |
4391 | m = gfc_match_old_kind_spec (ts); | |
4392 | if (gfc_validate_kind (ts->type, ts->kind, true) == -1) | |
4393 | return MATCH_ERROR; | |
4394 | } | |
4ee9c684 | 4395 | |
f446fb22 | 4396 | if (matched_type && gfc_match_char (')') != MATCH_YES) |
4397 | return MATCH_ERROR; | |
4398 | ||
077932f9 | 4399 | /* Defer association of the KIND expression of function results |
4400 | until after USE and IMPORT statements. */ | |
4401 | if ((gfc_current_state () == COMP_NONE && gfc_error_flag_test ()) | |
4402 | || gfc_matching_function) | |
4403 | return MATCH_YES; | |
4404 | ||
4ee9c684 | 4405 | if (m == MATCH_NO) |
4406 | m = MATCH_YES; /* No kind specifier found. */ | |
4407 | ||
4408 | return m; | |
4409 | } | |
4410 | ||
4411 | ||
39351103 | 4412 | /* Match an IMPLICIT NONE statement. Actually, this statement is |
4413 | already matched in parse.c, or we would not end up here in the | |
4414 | first place. So the only thing we need to check, is if there is | |
4415 | trailing garbage. If not, the match is successful. */ | |
4416 | ||
4417 | match | |
4418 | gfc_match_implicit_none (void) | |
4419 | { | |
0daab503 | 4420 | char c; |
4421 | match m; | |
4422 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4423 | bool type = false; | |
4424 | bool external = false; | |
94fea777 | 4425 | locus cur_loc = gfc_current_locus; |
4426 | ||
4427 | if (gfc_current_ns->seen_implicit_none | |
4428 | || gfc_current_ns->has_implicit_none_export) | |
4429 | { | |
4430 | gfc_error ("Duplicate IMPLICIT NONE statement at %C"); | |
4431 | return MATCH_ERROR; | |
4432 | } | |
0daab503 | 4433 | |
4434 | gfc_gobble_whitespace (); | |
4435 | c = gfc_peek_ascii_char (); | |
4436 | if (c == '(') | |
4437 | { | |
4438 | (void) gfc_next_ascii_char (); | |
003e134b | 4439 | if (!gfc_notify_std (GFC_STD_F2018, "IMPORT NONE with spec list at %C")) |
0daab503 | 4440 | return MATCH_ERROR; |
94fea777 | 4441 | |
4442 | gfc_gobble_whitespace (); | |
4443 | if (gfc_peek_ascii_char () == ')') | |
0daab503 | 4444 | { |
94fea777 | 4445 | (void) gfc_next_ascii_char (); |
4446 | type = true; | |
4447 | } | |
4448 | else | |
4449 | for(;;) | |
4450 | { | |
4451 | m = gfc_match (" %n", name); | |
4452 | if (m != MATCH_YES) | |
4453 | return MATCH_ERROR; | |
0daab503 | 4454 | |
94fea777 | 4455 | if (strcmp (name, "type") == 0) |
4456 | type = true; | |
4457 | else if (strcmp (name, "external") == 0) | |
4458 | external = true; | |
4459 | else | |
4460 | return MATCH_ERROR; | |
0daab503 | 4461 | |
94fea777 | 4462 | gfc_gobble_whitespace (); |
4463 | c = gfc_next_ascii_char (); | |
4464 | if (c == ',') | |
4465 | continue; | |
4466 | if (c == ')') | |
4467 | break; | |
4468 | return MATCH_ERROR; | |
4469 | } | |
0daab503 | 4470 | } |
4471 | else | |
4472 | type = true; | |
4473 | ||
4474 | if (gfc_match_eos () != MATCH_YES) | |
4475 | return MATCH_ERROR; | |
4476 | ||
94fea777 | 4477 | gfc_set_implicit_none (type, external, &cur_loc); |
0daab503 | 4478 | |
4479 | return MATCH_YES; | |
39351103 | 4480 | } |
4481 | ||
4482 | ||
4483 | /* Match the letter range(s) of an IMPLICIT statement. */ | |
4484 | ||
4485 | static match | |
b70528c7 | 4486 | match_implicit_range (void) |
39351103 | 4487 | { |
e0be6f02 | 4488 | char c, c1, c2; |
4489 | int inner; | |
39351103 | 4490 | locus cur_loc; |
4491 | ||
4492 | cur_loc = gfc_current_locus; | |
4493 | ||
4494 | gfc_gobble_whitespace (); | |
e0be6f02 | 4495 | c = gfc_next_ascii_char (); |
39351103 | 4496 | if (c != '(') |
4497 | { | |
4498 | gfc_error ("Missing character range in IMPLICIT at %C"); | |
4499 | goto bad; | |
4500 | } | |
4501 | ||
4502 | inner = 1; | |
4503 | while (inner) | |
4504 | { | |
4505 | gfc_gobble_whitespace (); | |
e0be6f02 | 4506 | c1 = gfc_next_ascii_char (); |
39351103 | 4507 | if (!ISALPHA (c1)) |
4508 | goto bad; | |
4509 | ||
4510 | gfc_gobble_whitespace (); | |
e0be6f02 | 4511 | c = gfc_next_ascii_char (); |
39351103 | 4512 | |
4513 | switch (c) | |
4514 | { | |
4515 | case ')': | |
f6d0e37a | 4516 | inner = 0; /* Fall through. */ |
39351103 | 4517 | |
4518 | case ',': | |
4519 | c2 = c1; | |
4520 | break; | |
4521 | ||
4522 | case '-': | |
4523 | gfc_gobble_whitespace (); | |
e0be6f02 | 4524 | c2 = gfc_next_ascii_char (); |
39351103 | 4525 | if (!ISALPHA (c2)) |
4526 | goto bad; | |
4527 | ||
4528 | gfc_gobble_whitespace (); | |
e0be6f02 | 4529 | c = gfc_next_ascii_char (); |
39351103 | 4530 | |
4531 | if ((c != ',') && (c != ')')) | |
4532 | goto bad; | |
4533 | if (c == ')') | |
4534 | inner = 0; | |
4535 | ||
4536 | break; | |
4537 | ||
4538 | default: | |
4539 | goto bad; | |
4540 | } | |
4541 | ||
4542 | if (c1 > c2) | |
4543 | { | |
4544 | gfc_error ("Letters must be in alphabetic order in " | |
4545 | "IMPLICIT statement at %C"); | |
4546 | goto bad; | |
4547 | } | |
4548 | ||
4549 | /* See if we can add the newly matched range to the pending | |
1a9745d2 | 4550 | implicits from this IMPLICIT statement. We do not check for |
4551 | conflicts with whatever earlier IMPLICIT statements may have | |
4552 | set. This is done when we've successfully finished matching | |
4553 | the current one. */ | |
60e19868 | 4554 | if (!gfc_add_new_implicit_range (c1, c2)) |
39351103 | 4555 | goto bad; |
4556 | } | |
4557 | ||
4558 | return MATCH_YES; | |
4559 | ||
4560 | bad: | |
4561 | gfc_syntax_error (ST_IMPLICIT); | |
4562 | ||
4563 | gfc_current_locus = cur_loc; | |
4564 | return MATCH_ERROR; | |
4565 | } | |
4566 | ||
4567 | ||
4568 | /* Match an IMPLICIT statement, storing the types for | |
4569 | gfc_set_implicit() if the statement is accepted by the parser. | |
4570 | There is a strange looking, but legal syntactic construction | |
4571 | possible. It looks like: | |
4572 | ||
4573 | IMPLICIT INTEGER (a-b) (c-d) | |
4574 | ||
4575 | This is legal if "a-b" is a constant expression that happens to | |
4576 | equal one of the legal kinds for integers. The real problem | |
4577 | happens with an implicit specification that looks like: | |
4578 | ||
4579 | IMPLICIT INTEGER (a-b) | |
4580 | ||
4581 | In this case, a typespec matcher that is "greedy" (as most of the | |
4582 | matchers are) gobbles the character range as a kindspec, leaving | |
4583 | nothing left. We therefore have to go a bit more slowly in the | |
4584 | matching process by inhibiting the kindspec checking during | |
4585 | typespec matching and checking for a kind later. */ | |
4586 | ||
4587 | match | |
4588 | gfc_match_implicit (void) | |
4589 | { | |
4590 | gfc_typespec ts; | |
4591 | locus cur_loc; | |
e0be6f02 | 4592 | char c; |
39351103 | 4593 | match m; |
4594 | ||
0daab503 | 4595 | if (gfc_current_ns->seen_implicit_none) |
4596 | { | |
4597 | gfc_error ("IMPLICIT statement at %C following an IMPLICIT NONE (type) " | |
4598 | "statement"); | |
4599 | return MATCH_ERROR; | |
4600 | } | |
4601 | ||
52179f31 | 4602 | gfc_clear_ts (&ts); |
4603 | ||
39351103 | 4604 | /* We don't allow empty implicit statements. */ |
4605 | if (gfc_match_eos () == MATCH_YES) | |
4606 | { | |
4607 | gfc_error ("Empty IMPLICIT statement at %C"); | |
4608 | return MATCH_ERROR; | |
4609 | } | |
4610 | ||
39351103 | 4611 | do |
4612 | { | |
b70528c7 | 4613 | /* First cleanup. */ |
4614 | gfc_clear_new_implicit (); | |
4615 | ||
39351103 | 4616 | /* A basic type is mandatory here. */ |
e8152f13 | 4617 | m = gfc_match_decl_type_spec (&ts, 1); |
39351103 | 4618 | if (m == MATCH_ERROR) |
4619 | goto error; | |
4620 | if (m == MATCH_NO) | |
4621 | goto syntax; | |
4622 | ||
4623 | cur_loc = gfc_current_locus; | |
b70528c7 | 4624 | m = match_implicit_range (); |
39351103 | 4625 | |
4626 | if (m == MATCH_YES) | |
4627 | { | |
b70528c7 | 4628 | /* We may have <TYPE> (<RANGE>). */ |
39351103 | 4629 | gfc_gobble_whitespace (); |
94fea777 | 4630 | c = gfc_peek_ascii_char (); |
4631 | if (c == ',' || c == '\n' || c == ';' || c == '!') | |
b70528c7 | 4632 | { |
4633 | /* Check for CHARACTER with no length parameter. */ | |
eeebe20b | 4634 | if (ts.type == BT_CHARACTER && !ts.u.cl) |
b70528c7 | 4635 | { |
b8a891cb | 4636 | ts.kind = gfc_default_character_kind; |
d270ce52 | 4637 | ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
9f4d9f83 | 4638 | ts.u.cl->length = gfc_get_int_expr (gfc_charlen_int_kind, |
126387b5 | 4639 | NULL, 1); |
b70528c7 | 4640 | } |
4641 | ||
4642 | /* Record the Successful match. */ | |
60e19868 | 4643 | if (!gfc_merge_new_implicit (&ts)) |
b70528c7 | 4644 | return MATCH_ERROR; |
94fea777 | 4645 | if (c == ',') |
4646 | c = gfc_next_ascii_char (); | |
4647 | else if (gfc_match_eos () == MATCH_ERROR) | |
4648 | goto error; | |
b70528c7 | 4649 | continue; |
4650 | } | |
39351103 | 4651 | |
4652 | gfc_current_locus = cur_loc; | |
4653 | } | |
4654 | ||
b70528c7 | 4655 | /* Discard the (incorrectly) matched range. */ |
4656 | gfc_clear_new_implicit (); | |
4657 | ||
4658 | /* Last chance -- check <TYPE> <SELECTOR> (<RANGE>). */ | |
4659 | if (ts.type == BT_CHARACTER) | |
10f5dcc0 | 4660 | m = gfc_match_char_spec (&ts); |
b70528c7 | 4661 | else |
39351103 | 4662 | { |
67a51c8e | 4663 | m = gfc_match_kind_spec (&ts, false); |
39351103 | 4664 | if (m == MATCH_NO) |
b70528c7 | 4665 | { |
4666 | m = gfc_match_old_kind_spec (&ts); | |
4667 | if (m == MATCH_ERROR) | |
4668 | goto error; | |
4669 | if (m == MATCH_NO) | |
4670 | goto syntax; | |
4671 | } | |
39351103 | 4672 | } |
b70528c7 | 4673 | if (m == MATCH_ERROR) |
4674 | goto error; | |
39351103 | 4675 | |
b70528c7 | 4676 | m = match_implicit_range (); |
39351103 | 4677 | if (m == MATCH_ERROR) |
4678 | goto error; | |
4679 | if (m == MATCH_NO) | |
4680 | goto syntax; | |
4681 | ||
4682 | gfc_gobble_whitespace (); | |
e0be6f02 | 4683 | c = gfc_next_ascii_char (); |
94fea777 | 4684 | if (c != ',' && gfc_match_eos () != MATCH_YES) |
39351103 | 4685 | goto syntax; |
4686 | ||
60e19868 | 4687 | if (!gfc_merge_new_implicit (&ts)) |
b70528c7 | 4688 | return MATCH_ERROR; |
39351103 | 4689 | } |
4690 | while (c == ','); | |
4691 | ||
b70528c7 | 4692 | return MATCH_YES; |
39351103 | 4693 | |
4694 | syntax: | |
4695 | gfc_syntax_error (ST_IMPLICIT); | |
4696 | ||
4697 | error: | |
4698 | return MATCH_ERROR; | |
4699 | } | |
4700 | ||
f6d0e37a | 4701 | |
d67fc9ae | 4702 | match |
4703 | gfc_match_import (void) | |
4704 | { | |
4705 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4706 | match m; | |
4707 | gfc_symbol *sym; | |
4708 | gfc_symtree *st; | |
4709 | ||
f6d0e37a | 4710 | if (gfc_current_ns->proc_name == NULL |
4711 | || gfc_current_ns->proc_name->attr.if_source != IFSRC_IFBODY) | |
d67fc9ae | 4712 | { |
4713 | gfc_error ("IMPORT statement at %C only permitted in " | |
4714 | "an INTERFACE body"); | |
4715 | return MATCH_ERROR; | |
4716 | } | |
4717 | ||
4b8eb6ca | 4718 | if (gfc_current_ns->proc_name->attr.module_procedure) |
4719 | { | |
4720 | gfc_error ("F2008: C1210 IMPORT statement at %C is not permitted " | |
4721 | "in a module procedure interface body"); | |
4722 | return MATCH_ERROR; | |
4723 | } | |
4724 | ||
60e19868 | 4725 | if (!gfc_notify_std (GFC_STD_F2003, "IMPORT statement at %C")) |
d67fc9ae | 4726 | return MATCH_ERROR; |
4727 | ||
4728 | if (gfc_match_eos () == MATCH_YES) | |
4729 | { | |
4730 | /* All host variables should be imported. */ | |
4731 | gfc_current_ns->has_import_set = 1; | |
4732 | return MATCH_YES; | |
4733 | } | |
4734 | ||
4735 | if (gfc_match (" ::") == MATCH_YES) | |
4736 | { | |
4737 | if (gfc_match_eos () == MATCH_YES) | |
1a9745d2 | 4738 | { |
4739 | gfc_error ("Expecting list of named entities at %C"); | |
4740 | return MATCH_ERROR; | |
4741 | } | |
d67fc9ae | 4742 | } |
4743 | ||
4744 | for(;;) | |
4745 | { | |
495e197c | 4746 | sym = NULL; |
d67fc9ae | 4747 | m = gfc_match (" %n", name); |
4748 | switch (m) | |
4749 | { | |
4750 | case MATCH_YES: | |
096d4ad9 | 4751 | if (gfc_current_ns->parent != NULL |
f6d0e37a | 4752 | && gfc_find_symbol (name, gfc_current_ns->parent, 1, &sym)) |
096d4ad9 | 4753 | { |
716da296 | 4754 | gfc_error ("Type name %qs at %C is ambiguous", name); |
096d4ad9 | 4755 | return MATCH_ERROR; |
4756 | } | |
6b010511 | 4757 | else if (!sym && gfc_current_ns->proc_name->ns->parent != NULL |
f6d0e37a | 4758 | && gfc_find_symbol (name, |
4759 | gfc_current_ns->proc_name->ns->parent, | |
4760 | 1, &sym)) | |
1a9745d2 | 4761 | { |
716da296 | 4762 | gfc_error ("Type name %qs at %C is ambiguous", name); |
1a9745d2 | 4763 | return MATCH_ERROR; |
4764 | } | |
4765 | ||
4766 | if (sym == NULL) | |
4767 | { | |
716da296 | 4768 | gfc_error ("Cannot IMPORT %qs from host scoping unit " |
1a9745d2 | 4769 | "at %C - does not exist.", name); |
4770 | return MATCH_ERROR; | |
4771 | } | |
4772 | ||
d67dd34f | 4773 | if (gfc_find_symtree (gfc_current_ns->sym_root, name)) |
1a9745d2 | 4774 | { |
6f521718 | 4775 | gfc_warning (0, "%qs is already IMPORTed from host scoping unit " |
4166acc7 | 4776 | "at %C", name); |
1a9745d2 | 4777 | goto next_item; |
4778 | } | |
4779 | ||
d67dd34f | 4780 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); |
1a9745d2 | 4781 | st->n.sym = sym; |
4782 | sym->refs++; | |
c723595c | 4783 | sym->attr.imported = 1; |
d67fc9ae | 4784 | |
c2958b6b | 4785 | if (sym->attr.generic && (sym = gfc_find_dt_in_generic (sym))) |
4786 | { | |
4787 | /* The actual derived type is stored in a symtree with the first | |
df084314 | 4788 | letter of the name capitalized; the symtree with the all |
293d72e0 | 4789 | lower-case name contains the associated generic function. */ |
c2958b6b | 4790 | st = gfc_new_symtree (&gfc_current_ns->sym_root, |
d7cd448a | 4791 | gfc_dt_upper_string (name)); |
c2958b6b | 4792 | st->n.sym = sym; |
4793 | sym->refs++; | |
4794 | sym->attr.imported = 1; | |
4795 | } | |
4796 | ||
d67fc9ae | 4797 | goto next_item; |
4798 | ||
4799 | case MATCH_NO: | |
4800 | break; | |
4801 | ||
4802 | case MATCH_ERROR: | |
4803 | return MATCH_ERROR; | |
4804 | } | |
4805 | ||
4806 | next_item: | |
4807 | if (gfc_match_eos () == MATCH_YES) | |
4808 | break; | |
4809 | if (gfc_match_char (',') != MATCH_YES) | |
4810 | goto syntax; | |
4811 | } | |
4812 | ||
4813 | return MATCH_YES; | |
4814 | ||
4815 | syntax: | |
4816 | gfc_error ("Syntax error in IMPORT statement at %C"); | |
4817 | return MATCH_ERROR; | |
4818 | } | |
39351103 | 4819 | |
f6d0e37a | 4820 | |
c72e5f7e | 4821 | /* A minimal implementation of gfc_match without whitespace, escape |
4822 | characters or variable arguments. Returns true if the next | |
4823 | characters match the TARGET template exactly. */ | |
4824 | ||
4825 | static bool | |
4826 | match_string_p (const char *target) | |
4827 | { | |
4828 | const char *p; | |
4829 | ||
4830 | for (p = target; *p; p++) | |
e0be6f02 | 4831 | if ((char) gfc_next_ascii_char () != *p) |
c72e5f7e | 4832 | return false; |
4833 | return true; | |
4834 | } | |
4835 | ||
4ee9c684 | 4836 | /* Matches an attribute specification including array specs. If |
4837 | successful, leaves the variables current_attr and current_as | |
4838 | holding the specification. Also sets the colon_seen variable for | |
4839 | later use by matchers associated with initializations. | |
4840 | ||
4841 | This subroutine is a little tricky in the sense that we don't know | |
4842 | if we really have an attr-spec until we hit the double colon. | |
4843 | Until that time, we can only return MATCH_NO. This forces us to | |
4844 | check for duplicate specification at this level. */ | |
4845 | ||
4846 | static match | |
4847 | match_attr_spec (void) | |
4848 | { | |
4ee9c684 | 4849 | /* Modifiers that can exist in a type statement. */ |
d55c3689 | 4850 | enum |
55be378c | 4851 | { GFC_DECL_BEGIN = 0, DECL_ALLOCATABLE = GFC_DECL_BEGIN, |
4852 | DECL_IN = INTENT_IN, DECL_OUT = INTENT_OUT, DECL_INOUT = INTENT_INOUT, | |
4853 | DECL_DIMENSION, DECL_EXTERNAL, | |
4854 | DECL_INTRINSIC, DECL_OPTIONAL, | |
3ea52af3 | 4855 | DECL_PARAMETER, DECL_POINTER, DECL_PROTECTED, DECL_PRIVATE, |
8e652fcf | 4856 | DECL_STATIC, DECL_AUTOMATIC, |
3ea52af3 | 4857 | DECL_PUBLIC, DECL_SAVE, DECL_TARGET, DECL_VALUE, DECL_VOLATILE, |
b3c3927c | 4858 | DECL_IS_BIND_C, DECL_CODIMENSION, DECL_ASYNCHRONOUS, DECL_CONTIGUOUS, |
9d958d5b | 4859 | DECL_LEN, DECL_KIND, DECL_NONE, GFC_DECL_END /* Sentinel */ |
d55c3689 | 4860 | }; |
4ee9c684 | 4861 | |
4862 | /* GFC_DECL_END is the sentinel, index starts at 0. */ | |
4863 | #define NUM_DECL GFC_DECL_END | |
4864 | ||
55be378c | 4865 | /* Make sure that values from sym_intent are safe to be used here. */ |
4866 | gcc_assert (INTENT_IN > 0); | |
4867 | ||
4ee9c684 | 4868 | locus start, seen_at[NUM_DECL]; |
4869 | int seen[NUM_DECL]; | |
9f1b7d17 | 4870 | unsigned int d; |
4ee9c684 | 4871 | const char *attr; |
4872 | match m; | |
60e19868 | 4873 | bool t; |
4ee9c684 | 4874 | |
4875 | gfc_clear_attr (¤t_attr); | |
cbb9e6aa | 4876 | start = gfc_current_locus; |
4ee9c684 | 4877 | |
4878 | current_as = NULL; | |
4879 | colon_seen = 0; | |
8ef2cf76 | 4880 | attr_seen = 0; |
4ee9c684 | 4881 | |
4882 | /* See if we get all of the keywords up to the final double colon. */ | |
4883 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
4884 | seen[d] = 0; | |
4885 | ||
4886 | for (;;) | |
4887 | { | |
e0be6f02 | 4888 | char ch; |
c5d33754 | 4889 | |
c72e5f7e | 4890 | d = DECL_NONE; |
4891 | gfc_gobble_whitespace (); | |
4892 | ||
e0be6f02 | 4893 | ch = gfc_next_ascii_char (); |
c72e5f7e | 4894 | if (ch == ':') |
4895 | { | |
4896 | /* This is the successful exit condition for the loop. */ | |
e0be6f02 | 4897 | if (gfc_next_ascii_char () == ':') |
c72e5f7e | 4898 | break; |
4899 | } | |
4900 | else if (ch == ',') | |
c5d33754 | 4901 | { |
c5d33754 | 4902 | gfc_gobble_whitespace (); |
e0be6f02 | 4903 | switch (gfc_peek_ascii_char ()) |
c5d33754 | 4904 | { |
c72e5f7e | 4905 | case 'a': |
738928be | 4906 | gfc_next_ascii_char (); |
4907 | switch (gfc_next_ascii_char ()) | |
4908 | { | |
4909 | case 'l': | |
4910 | if (match_string_p ("locatable")) | |
4911 | { | |
4912 | /* Matched "allocatable". */ | |
4913 | d = DECL_ALLOCATABLE; | |
4914 | } | |
4915 | break; | |
4916 | ||
4917 | case 's': | |
4918 | if (match_string_p ("ynchronous")) | |
4919 | { | |
4920 | /* Matched "asynchronous". */ | |
4921 | d = DECL_ASYNCHRONOUS; | |
4922 | } | |
4923 | break; | |
8e652fcf | 4924 | |
4925 | case 'u': | |
4926 | if (match_string_p ("tomatic")) | |
4927 | { | |
4928 | /* Matched "automatic". */ | |
4929 | d = DECL_AUTOMATIC; | |
4930 | } | |
4931 | break; | |
738928be | 4932 | } |
b3c3927c | 4933 | break; |
c72e5f7e | 4934 | |
4935 | case 'b': | |
c5d33754 | 4936 | /* Try and match the bind(c). */ |
75ae7f6c | 4937 | m = gfc_match_bind_c (NULL, true); |
5cf92482 | 4938 | if (m == MATCH_YES) |
c5d33754 | 4939 | d = DECL_IS_BIND_C; |
5cf92482 | 4940 | else if (m == MATCH_ERROR) |
4941 | goto cleanup; | |
c72e5f7e | 4942 | break; |
4943 | ||
aff518b0 | 4944 | case 'c': |
b3c3927c | 4945 | gfc_next_ascii_char (); |
4946 | if ('o' != gfc_next_ascii_char ()) | |
4947 | break; | |
4948 | switch (gfc_next_ascii_char ()) | |
4949 | { | |
4950 | case 'd': | |
4951 | if (match_string_p ("imension")) | |
4952 | { | |
4953 | d = DECL_CODIMENSION; | |
4954 | break; | |
4955 | } | |
e3533433 | 4956 | /* FALLTHRU */ |
b3c3927c | 4957 | case 'n': |
4958 | if (match_string_p ("tiguous")) | |
4959 | { | |
4960 | d = DECL_CONTIGUOUS; | |
4961 | break; | |
4962 | } | |
4963 | } | |
aff518b0 | 4964 | break; |
4965 | ||
c72e5f7e | 4966 | case 'd': |
4967 | if (match_string_p ("dimension")) | |
4968 | d = DECL_DIMENSION; | |
4969 | break; | |
4970 | ||
4971 | case 'e': | |
4972 | if (match_string_p ("external")) | |
4973 | d = DECL_EXTERNAL; | |
4974 | break; | |
4975 | ||
4976 | case 'i': | |
4977 | if (match_string_p ("int")) | |
4978 | { | |
e0be6f02 | 4979 | ch = gfc_next_ascii_char (); |
c72e5f7e | 4980 | if (ch == 'e') |
4981 | { | |
4982 | if (match_string_p ("nt")) | |
4983 | { | |
4984 | /* Matched "intent". */ | |
55be378c | 4985 | d = match_intent_spec (); |
4986 | if (d == INTENT_UNKNOWN) | |
4987 | { | |
4988 | m = MATCH_ERROR; | |
4989 | goto cleanup; | |
4990 | } | |
c72e5f7e | 4991 | } |
4992 | } | |
4993 | else if (ch == 'r') | |
4994 | { | |
4995 | if (match_string_p ("insic")) | |
4996 | { | |
4997 | /* Matched "intrinsic". */ | |
4998 | d = DECL_INTRINSIC; | |
4999 | } | |
5000 | } | |
5001 | } | |
5002 | break; | |
5003 | ||
9d958d5b | 5004 | case 'k': |
5005 | if (match_string_p ("kind")) | |
5006 | d = DECL_KIND; | |
5007 | break; | |
5008 | ||
5009 | case 'l': | |
5010 | if (match_string_p ("len")) | |
5011 | d = DECL_LEN; | |
5012 | break; | |
5013 | ||
c72e5f7e | 5014 | case 'o': |
5015 | if (match_string_p ("optional")) | |
5016 | d = DECL_OPTIONAL; | |
5017 | break; | |
5018 | ||
5019 | case 'p': | |
e0be6f02 | 5020 | gfc_next_ascii_char (); |
5021 | switch (gfc_next_ascii_char ()) | |
c72e5f7e | 5022 | { |
5023 | case 'a': | |
5024 | if (match_string_p ("rameter")) | |
5025 | { | |
5026 | /* Matched "parameter". */ | |
5027 | d = DECL_PARAMETER; | |
5028 | } | |
5029 | break; | |
5030 | ||
5031 | case 'o': | |
5032 | if (match_string_p ("inter")) | |
5033 | { | |
5034 | /* Matched "pointer". */ | |
5035 | d = DECL_POINTER; | |
5036 | } | |
5037 | break; | |
5038 | ||
5039 | case 'r': | |
e0be6f02 | 5040 | ch = gfc_next_ascii_char (); |
c72e5f7e | 5041 | if (ch == 'i') |
5042 | { | |
5043 | if (match_string_p ("vate")) | |
5044 | { | |
5045 | /* Matched "private". */ | |
5046 | d = DECL_PRIVATE; | |
5047 | } | |
5048 | } | |
5049 | else if (ch == 'o') | |
5050 | { | |
5051 | if (match_string_p ("tected")) | |
5052 | { | |
5053 | /* Matched "protected". */ | |
5054 | d = DECL_PROTECTED; | |
5055 | } | |
5056 | } | |
5057 | break; | |
5058 | ||
5059 | case 'u': | |
5060 | if (match_string_p ("blic")) | |
5061 | { | |
5062 | /* Matched "public". */ | |
5063 | d = DECL_PUBLIC; | |
5064 | } | |
5065 | break; | |
5066 | } | |
5067 | break; | |
5068 | ||
5069 | case 's': | |
8e652fcf | 5070 | gfc_next_ascii_char (); |
5071 | switch (gfc_next_ascii_char ()) | |
5072 | { | |
5073 | case 'a': | |
5074 | if (match_string_p ("ve")) | |
5075 | { | |
5076 | /* Matched "save". */ | |
5077 | d = DECL_SAVE; | |
5078 | } | |
5079 | break; | |
5080 | ||
5081 | case 't': | |
5082 | if (match_string_p ("atic")) | |
5083 | { | |
5084 | /* Matched "static". */ | |
5085 | d = DECL_STATIC; | |
5086 | } | |
5087 | break; | |
5088 | } | |
c72e5f7e | 5089 | break; |
5090 | ||
5091 | case 't': | |
5092 | if (match_string_p ("target")) | |
5093 | d = DECL_TARGET; | |
5094 | break; | |
5095 | ||
5096 | case 'v': | |
e0be6f02 | 5097 | gfc_next_ascii_char (); |
5098 | ch = gfc_next_ascii_char (); | |
c72e5f7e | 5099 | if (ch == 'a') |
5100 | { | |
5101 | if (match_string_p ("lue")) | |
5102 | { | |
5103 | /* Matched "value". */ | |
5104 | d = DECL_VALUE; | |
5105 | } | |
5106 | } | |
5107 | else if (ch == 'o') | |
5108 | { | |
5109 | if (match_string_p ("latile")) | |
5110 | { | |
5111 | /* Matched "volatile". */ | |
5112 | d = DECL_VOLATILE; | |
5113 | } | |
5114 | } | |
5115 | break; | |
c5d33754 | 5116 | } |
5117 | } | |
f3f9b222 | 5118 | |
c72e5f7e | 5119 | /* No double colon and no recognizable decl_type, so assume that |
5120 | we've been looking at something else the whole time. */ | |
5121 | if (d == DECL_NONE) | |
5122 | { | |
5123 | m = MATCH_NO; | |
5124 | goto cleanup; | |
5125 | } | |
e14bee04 | 5126 | |
7e221851 | 5127 | /* Check to make sure any parens are paired up correctly. */ |
5128 | if (gfc_match_parens () == MATCH_ERROR) | |
5129 | { | |
5130 | m = MATCH_ERROR; | |
5131 | goto cleanup; | |
5132 | } | |
5133 | ||
4ee9c684 | 5134 | seen[d]++; |
cbb9e6aa | 5135 | seen_at[d] = gfc_current_locus; |
4ee9c684 | 5136 | |
e97ac7c0 | 5137 | if (d == DECL_DIMENSION || d == DECL_CODIMENSION) |
4ee9c684 | 5138 | { |
e97ac7c0 | 5139 | gfc_array_spec *as = NULL; |
4ee9c684 | 5140 | |
e97ac7c0 | 5141 | m = gfc_match_array_spec (&as, d == DECL_DIMENSION, |
5142 | d == DECL_CODIMENSION); | |
5143 | ||
5144 | if (current_as == NULL) | |
5145 | current_as = as; | |
5146 | else if (m == MATCH_YES) | |
4ee9c684 | 5147 | { |
60e19868 | 5148 | if (!merge_array_spec (as, current_as, false)) |
9b58b4c7 | 5149 | m = MATCH_ERROR; |
434f0922 | 5150 | free (as); |
4ee9c684 | 5151 | } |
5152 | ||
aff518b0 | 5153 | if (m == MATCH_NO) |
5154 | { | |
e97ac7c0 | 5155 | if (d == DECL_CODIMENSION) |
5156 | gfc_error ("Missing codimension specification at %C"); | |
5157 | else | |
5158 | gfc_error ("Missing dimension specification at %C"); | |
aff518b0 | 5159 | m = MATCH_ERROR; |
5160 | } | |
5161 | ||
5162 | if (m == MATCH_ERROR) | |
5163 | goto cleanup; | |
5164 | } | |
4ee9c684 | 5165 | } |
5166 | ||
4ee9c684 | 5167 | /* Since we've seen a double colon, we have to be looking at an |
5168 | attr-spec. This means that we can now issue errors. */ | |
5169 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
5170 | if (seen[d] > 1) | |
5171 | { | |
5172 | switch (d) | |
5173 | { | |
5174 | case DECL_ALLOCATABLE: | |
5175 | attr = "ALLOCATABLE"; | |
5176 | break; | |
738928be | 5177 | case DECL_ASYNCHRONOUS: |
5178 | attr = "ASYNCHRONOUS"; | |
5179 | break; | |
aff518b0 | 5180 | case DECL_CODIMENSION: |
5181 | attr = "CODIMENSION"; | |
5182 | break; | |
b3c3927c | 5183 | case DECL_CONTIGUOUS: |
5184 | attr = "CONTIGUOUS"; | |
5185 | break; | |
4ee9c684 | 5186 | case DECL_DIMENSION: |
5187 | attr = "DIMENSION"; | |
5188 | break; | |
5189 | case DECL_EXTERNAL: | |
5190 | attr = "EXTERNAL"; | |
5191 | break; | |
5192 | case DECL_IN: | |
5193 | attr = "INTENT (IN)"; | |
5194 | break; | |
5195 | case DECL_OUT: | |
5196 | attr = "INTENT (OUT)"; | |
5197 | break; | |
5198 | case DECL_INOUT: | |
5199 | attr = "INTENT (IN OUT)"; | |
5200 | break; | |
5201 | case DECL_INTRINSIC: | |
5202 | attr = "INTRINSIC"; | |
5203 | break; | |
5204 | case DECL_OPTIONAL: | |
5205 | attr = "OPTIONAL"; | |
5206 | break; | |
9d958d5b | 5207 | case DECL_KIND: |
5208 | attr = "KIND"; | |
5209 | break; | |
5210 | case DECL_LEN: | |
5211 | attr = "LEN"; | |
5212 | break; | |
4ee9c684 | 5213 | case DECL_PARAMETER: |
5214 | attr = "PARAMETER"; | |
5215 | break; | |
5216 | case DECL_POINTER: | |
5217 | attr = "POINTER"; | |
5218 | break; | |
3ea52af3 | 5219 | case DECL_PROTECTED: |
5220 | attr = "PROTECTED"; | |
5221 | break; | |
4ee9c684 | 5222 | case DECL_PRIVATE: |
5223 | attr = "PRIVATE"; | |
5224 | break; | |
5225 | case DECL_PUBLIC: | |
5226 | attr = "PUBLIC"; | |
5227 | break; | |
5228 | case DECL_SAVE: | |
5229 | attr = "SAVE"; | |
5230 | break; | |
8e652fcf | 5231 | case DECL_STATIC: |
5232 | attr = "STATIC"; | |
5233 | break; | |
5234 | case DECL_AUTOMATIC: | |
5235 | attr = "AUTOMATIC"; | |
5236 | break; | |
4ee9c684 | 5237 | case DECL_TARGET: |
5238 | attr = "TARGET"; | |
5239 | break; | |
c5d33754 | 5240 | case DECL_IS_BIND_C: |
5241 | attr = "IS_BIND_C"; | |
5242 | break; | |
5243 | case DECL_VALUE: | |
5244 | attr = "VALUE"; | |
5245 | break; | |
ef814c81 | 5246 | case DECL_VOLATILE: |
5247 | attr = "VOLATILE"; | |
5248 | break; | |
4ee9c684 | 5249 | default: |
f6d0e37a | 5250 | attr = NULL; /* This shouldn't happen. */ |
4ee9c684 | 5251 | } |
5252 | ||
5253 | gfc_error ("Duplicate %s attribute at %L", attr, &seen_at[d]); | |
5254 | m = MATCH_ERROR; | |
5255 | goto cleanup; | |
5256 | } | |
5257 | ||
5258 | /* Now that we've dealt with duplicate attributes, add the attributes | |
5259 | to the current attribute. */ | |
5260 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
5261 | { | |
5262 | if (seen[d] == 0) | |
5263 | continue; | |
8ef2cf76 | 5264 | else |
5265 | attr_seen = 1; | |
4ee9c684 | 5266 | |
8e652fcf | 5267 | if ((d == DECL_STATIC || d == DECL_AUTOMATIC) |
5268 | && !flag_dec_static) | |
5269 | { | |
841da9cf | 5270 | gfc_error ("%s at %L is a DEC extension, enable with " |
5271 | "%<-fdec-static%>", | |
8e652fcf | 5272 | d == DECL_STATIC ? "STATIC" : "AUTOMATIC", &seen_at[d]); |
5273 | m = MATCH_ERROR; | |
5274 | goto cleanup; | |
5275 | } | |
5276 | /* Allow SAVE with STATIC, but don't complain. */ | |
5277 | if (d == DECL_STATIC && seen[DECL_SAVE]) | |
5278 | continue; | |
5279 | ||
4ee9c684 | 5280 | if (gfc_current_state () == COMP_DERIVED |
aff518b0 | 5281 | && d != DECL_DIMENSION && d != DECL_CODIMENSION |
5282 | && d != DECL_POINTER && d != DECL_PRIVATE | |
b3c3927c | 5283 | && d != DECL_PUBLIC && d != DECL_CONTIGUOUS && d != DECL_NONE) |
4ee9c684 | 5284 | { |
2294b616 | 5285 | if (d == DECL_ALLOCATABLE) |
5286 | { | |
60e19868 | 5287 | if (!gfc_notify_std (GFC_STD_F2003, "ALLOCATABLE " |
5288 | "attribute at %C in a TYPE definition")) | |
2294b616 | 5289 | { |
5290 | m = MATCH_ERROR; | |
5291 | goto cleanup; | |
5292 | } | |
1a9745d2 | 5293 | } |
9d958d5b | 5294 | else if (d == DECL_KIND) |
5295 | { | |
5296 | if (!gfc_notify_std (GFC_STD_F2003, "KIND " | |
5297 | "attribute at %C in a TYPE definition")) | |
5298 | { | |
5299 | m = MATCH_ERROR; | |
5300 | goto cleanup; | |
5301 | } | |
5302 | if (current_ts.type != BT_INTEGER) | |
5303 | { | |
5304 | gfc_error ("Component with KIND attribute at %C must be " | |
5305 | "INTEGER"); | |
5306 | m = MATCH_ERROR; | |
5307 | goto cleanup; | |
5308 | } | |
5309 | if (current_ts.kind != gfc_default_integer_kind) | |
5310 | { | |
5311 | gfc_error ("Component with KIND attribute at %C must be " | |
5312 | "default integer kind (%d)", | |
5313 | gfc_default_integer_kind); | |
5314 | m = MATCH_ERROR; | |
5315 | goto cleanup; | |
5316 | } | |
5317 | } | |
5318 | else if (d == DECL_LEN) | |
5319 | { | |
5320 | if (!gfc_notify_std (GFC_STD_F2003, "LEN " | |
5321 | "attribute at %C in a TYPE definition")) | |
5322 | { | |
5323 | m = MATCH_ERROR; | |
5324 | goto cleanup; | |
5325 | } | |
5326 | if (current_ts.type != BT_INTEGER) | |
5327 | { | |
5328 | gfc_error ("Component with LEN attribute at %C must be " | |
5329 | "INTEGER"); | |
5330 | m = MATCH_ERROR; | |
5331 | goto cleanup; | |
5332 | } | |
5333 | if (current_ts.kind != gfc_default_integer_kind) | |
5334 | { | |
5335 | gfc_error ("Component with LEN attribute at %C must be " | |
5336 | "default integer kind (%d)", | |
5337 | gfc_default_integer_kind); | |
5338 | m = MATCH_ERROR; | |
5339 | goto cleanup; | |
5340 | } | |
5341 | } | |
1a9745d2 | 5342 | else |
2294b616 | 5343 | { |
5344 | gfc_error ("Attribute at %L is not allowed in a TYPE definition", | |
e14bee04 | 5345 | &seen_at[d]); |
2294b616 | 5346 | m = MATCH_ERROR; |
5347 | goto cleanup; | |
5348 | } | |
4ee9c684 | 5349 | } |
5350 | ||
ea13b9b7 | 5351 | if ((d == DECL_PRIVATE || d == DECL_PUBLIC) |
1a9745d2 | 5352 | && gfc_current_state () != COMP_MODULE) |
ea13b9b7 | 5353 | { |
5354 | if (d == DECL_PRIVATE) | |
5355 | attr = "PRIVATE"; | |
5356 | else | |
5357 | attr = "PUBLIC"; | |
e14bee04 | 5358 | if (gfc_current_state () == COMP_DERIVED |
5359 | && gfc_state_stack->previous | |
5360 | && gfc_state_stack->previous->state == COMP_MODULE) | |
5361 | { | |
60e19868 | 5362 | if (!gfc_notify_std (GFC_STD_F2003, "Attribute %s " |
76e207a9 | 5363 | "at %L in a TYPE definition", attr, |
60e19868 | 5364 | &seen_at[d])) |
e14bee04 | 5365 | { |
5366 | m = MATCH_ERROR; | |
5367 | goto cleanup; | |
5368 | } | |
5369 | } | |
5370 | else | |
5371 | { | |
5372 | gfc_error ("%s attribute at %L is not allowed outside of the " | |
5373 | "specification part of a module", attr, &seen_at[d]); | |
5374 | m = MATCH_ERROR; | |
5375 | goto cleanup; | |
5376 | } | |
ea13b9b7 | 5377 | } |
5378 | ||
9d958d5b | 5379 | if (gfc_current_state () != COMP_DERIVED |
5380 | && (d == DECL_KIND || d == DECL_LEN)) | |
5381 | { | |
5382 | gfc_error ("Attribute at %L is not allowed outside a TYPE " | |
5383 | "definition", &seen_at[d]); | |
5384 | m = MATCH_ERROR; | |
5385 | goto cleanup; | |
5386 | } | |
5387 | ||
4ee9c684 | 5388 | switch (d) |
5389 | { | |
5390 | case DECL_ALLOCATABLE: | |
5391 | t = gfc_add_allocatable (¤t_attr, &seen_at[d]); | |
5392 | break; | |
5393 | ||
738928be | 5394 | case DECL_ASYNCHRONOUS: |
60e19868 | 5395 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS attribute at %C")) |
5396 | t = false; | |
738928be | 5397 | else |
5398 | t = gfc_add_asynchronous (¤t_attr, NULL, &seen_at[d]); | |
5399 | break; | |
5400 | ||
aff518b0 | 5401 | case DECL_CODIMENSION: |
5402 | t = gfc_add_codimension (¤t_attr, NULL, &seen_at[d]); | |
5403 | break; | |
5404 | ||
b3c3927c | 5405 | case DECL_CONTIGUOUS: |
60e19868 | 5406 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS attribute at %C")) |
5407 | t = false; | |
b3c3927c | 5408 | else |
5409 | t = gfc_add_contiguous (¤t_attr, NULL, &seen_at[d]); | |
5410 | break; | |
5411 | ||
4ee9c684 | 5412 | case DECL_DIMENSION: |
950683ed | 5413 | t = gfc_add_dimension (¤t_attr, NULL, &seen_at[d]); |
4ee9c684 | 5414 | break; |
5415 | ||
5416 | case DECL_EXTERNAL: | |
5417 | t = gfc_add_external (¤t_attr, &seen_at[d]); | |
5418 | break; | |
5419 | ||
5420 | case DECL_IN: | |
5421 | t = gfc_add_intent (¤t_attr, INTENT_IN, &seen_at[d]); | |
5422 | break; | |
5423 | ||
5424 | case DECL_OUT: | |
5425 | t = gfc_add_intent (¤t_attr, INTENT_OUT, &seen_at[d]); | |
5426 | break; | |
5427 | ||
5428 | case DECL_INOUT: | |
5429 | t = gfc_add_intent (¤t_attr, INTENT_INOUT, &seen_at[d]); | |
5430 | break; | |
5431 | ||
5432 | case DECL_INTRINSIC: | |
5433 | t = gfc_add_intrinsic (¤t_attr, &seen_at[d]); | |
5434 | break; | |
5435 | ||
5436 | case DECL_OPTIONAL: | |
5437 | t = gfc_add_optional (¤t_attr, &seen_at[d]); | |
5438 | break; | |
5439 | ||
9d958d5b | 5440 | case DECL_KIND: |
5441 | t = gfc_add_kind (¤t_attr, &seen_at[d]); | |
5442 | break; | |
5443 | ||
5444 | case DECL_LEN: | |
5445 | t = gfc_add_len (¤t_attr, &seen_at[d]); | |
5446 | break; | |
5447 | ||
4ee9c684 | 5448 | case DECL_PARAMETER: |
950683ed | 5449 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, &seen_at[d]); |
4ee9c684 | 5450 | break; |
5451 | ||
5452 | case DECL_POINTER: | |
5453 | t = gfc_add_pointer (¤t_attr, &seen_at[d]); | |
5454 | break; | |
5455 | ||
3ea52af3 | 5456 | case DECL_PROTECTED: |
8371b2e9 | 5457 | if (gfc_current_state () != COMP_MODULE |
5458 | || (gfc_current_ns->proc_name | |
5459 | && gfc_current_ns->proc_name->attr.flavor != FL_MODULE)) | |
3ea52af3 | 5460 | { |
5461 | gfc_error ("PROTECTED at %C only allowed in specification " | |
5462 | "part of a module"); | |
60e19868 | 5463 | t = false; |
3ea52af3 | 5464 | break; |
5465 | } | |
5466 | ||
60e19868 | 5467 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED attribute at %C")) |
5468 | t = false; | |
3ea52af3 | 5469 | else |
5470 | t = gfc_add_protected (¤t_attr, NULL, &seen_at[d]); | |
5471 | break; | |
5472 | ||
4ee9c684 | 5473 | case DECL_PRIVATE: |
950683ed | 5474 | t = gfc_add_access (¤t_attr, ACCESS_PRIVATE, NULL, |
5475 | &seen_at[d]); | |
4ee9c684 | 5476 | break; |
5477 | ||
5478 | case DECL_PUBLIC: | |
950683ed | 5479 | t = gfc_add_access (¤t_attr, ACCESS_PUBLIC, NULL, |
5480 | &seen_at[d]); | |
4ee9c684 | 5481 | break; |
5482 | ||
8e652fcf | 5483 | case DECL_STATIC: |
4ee9c684 | 5484 | case DECL_SAVE: |
23d075f4 | 5485 | t = gfc_add_save (¤t_attr, SAVE_EXPLICIT, NULL, &seen_at[d]); |
4ee9c684 | 5486 | break; |
5487 | ||
8e652fcf | 5488 | case DECL_AUTOMATIC: |
5489 | t = gfc_add_automatic (¤t_attr, NULL, &seen_at[d]); | |
5490 | break; | |
5491 | ||
4ee9c684 | 5492 | case DECL_TARGET: |
5493 | t = gfc_add_target (¤t_attr, &seen_at[d]); | |
5494 | break; | |
5495 | ||
c5d33754 | 5496 | case DECL_IS_BIND_C: |
5497 | t = gfc_add_is_bind_c(¤t_attr, NULL, &seen_at[d], 0); | |
5498 | break; | |
8db94b3b | 5499 | |
8f6339b6 | 5500 | case DECL_VALUE: |
60e19868 | 5501 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE attribute at %C")) |
5502 | t = false; | |
8f6339b6 | 5503 | else |
5504 | t = gfc_add_value (¤t_attr, NULL, &seen_at[d]); | |
5505 | break; | |
5506 | ||
ef814c81 | 5507 | case DECL_VOLATILE: |
60e19868 | 5508 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE attribute at %C")) |
5509 | t = false; | |
ef814c81 | 5510 | else |
5511 | t = gfc_add_volatile (¤t_attr, NULL, &seen_at[d]); | |
5512 | break; | |
5513 | ||
4ee9c684 | 5514 | default: |
5515 | gfc_internal_error ("match_attr_spec(): Bad attribute"); | |
5516 | } | |
5517 | ||
60e19868 | 5518 | if (!t) |
4ee9c684 | 5519 | { |
5520 | m = MATCH_ERROR; | |
5521 | goto cleanup; | |
5522 | } | |
5523 | } | |
5524 | ||
c25834c9 | 5525 | /* Since Fortran 2008 module variables implicitly have the SAVE attribute. */ |
4b8eb6ca | 5526 | if ((gfc_current_state () == COMP_MODULE |
5527 | || gfc_current_state () == COMP_SUBMODULE) | |
5528 | && !current_attr.save | |
c25834c9 | 5529 | && (gfc_option.allow_std & GFC_STD_F2008) != 0) |
23d075f4 | 5530 | current_attr.save = SAVE_IMPLICIT; |
5531 | ||
4ee9c684 | 5532 | colon_seen = 1; |
5533 | return MATCH_YES; | |
5534 | ||
5535 | cleanup: | |
cbb9e6aa | 5536 | gfc_current_locus = start; |
4ee9c684 | 5537 | gfc_free_array_spec (current_as); |
5538 | current_as = NULL; | |
8ef2cf76 | 5539 | attr_seen = 0; |
4ee9c684 | 5540 | return m; |
5541 | } | |
5542 | ||
5543 | ||
c5d33754 | 5544 | /* Set the binding label, dest_label, either with the binding label |
5545 | stored in the given gfc_typespec, ts, or if none was provided, it | |
5546 | will be the symbol name in all lower case, as required by the draft | |
5547 | (J3/04-007, section 15.4.1). If a binding label was given and | |
5548 | there is more than one argument (num_idents), it is an error. */ | |
5549 | ||
60e19868 | 5550 | static bool |
8db94b3b | 5551 | set_binding_label (const char **dest_label, const char *sym_name, |
1d8a57d8 | 5552 | int num_idents) |
c5d33754 | 5553 | { |
825718f9 | 5554 | if (num_idents > 1 && has_name_equals) |
c5d33754 | 5555 | { |
825718f9 | 5556 | gfc_error ("Multiple identifiers provided with " |
5557 | "single NAME= specifier at %C"); | |
60e19868 | 5558 | return false; |
825718f9 | 5559 | } |
c5d33754 | 5560 | |
7b2060ba | 5561 | if (curr_binding_label) |
df084314 | 5562 | /* Binding label given; store in temp holder till have sym. */ |
7b2060ba | 5563 | *dest_label = curr_binding_label; |
c5d33754 | 5564 | else |
5565 | { | |
5566 | /* No binding label given, and the NAME= specifier did not exist, | |
5567 | which means there was no NAME="". */ | |
5568 | if (sym_name != NULL && has_name_equals == 0) | |
7b2060ba | 5569 | *dest_label = IDENTIFIER_POINTER (get_identifier (sym_name)); |
c5d33754 | 5570 | } |
8db94b3b | 5571 | |
60e19868 | 5572 | return true; |
c5d33754 | 5573 | } |
5574 | ||
5575 | ||
5576 | /* Set the status of the given common block as being BIND(C) or not, | |
5577 | depending on the given parameter, is_bind_c. */ | |
5578 | ||
5579 | void | |
5580 | set_com_block_bind_c (gfc_common_head *com_block, int is_bind_c) | |
5581 | { | |
5582 | com_block->is_bind_c = is_bind_c; | |
5583 | return; | |
5584 | } | |
5585 | ||
5586 | ||
5587 | /* Verify that the given gfc_typespec is for a C interoperable type. */ | |
5588 | ||
60e19868 | 5589 | bool |
2564c57a | 5590 | gfc_verify_c_interop (gfc_typespec *ts) |
c5d33754 | 5591 | { |
eeebe20b | 5592 | if (ts->type == BT_DERIVED && ts->u.derived != NULL) |
5f9b1308 | 5593 | return (ts->u.derived->ts.is_c_interop || ts->u.derived->attr.is_bind_c) |
60e19868 | 5594 | ? true : false; |
2564c57a | 5595 | else if (ts->type == BT_CLASS) |
60e19868 | 5596 | return false; |
8c2d8d6d | 5597 | else if (ts->is_c_interop != 1 && ts->type != BT_ASSUMED) |
60e19868 | 5598 | return false; |
8c2d8d6d | 5599 | |
60e19868 | 5600 | return true; |
c5d33754 | 5601 | } |
5602 | ||
5603 | ||
5604 | /* Verify that the variables of a given common block, which has been | |
5605 | defined with the attribute specifier bind(c), to be of a C | |
5606 | interoperable type. Errors will be reported here, if | |
5607 | encountered. */ | |
5608 | ||
60e19868 | 5609 | bool |
c5d33754 | 5610 | verify_com_block_vars_c_interop (gfc_common_head *com_block) |
5611 | { | |
5612 | gfc_symbol *curr_sym = NULL; | |
60e19868 | 5613 | bool retval = true; |
c5d33754 | 5614 | |
5615 | curr_sym = com_block->head; | |
8db94b3b | 5616 | |
c5d33754 | 5617 | /* Make sure we have at least one symbol. */ |
5618 | if (curr_sym == NULL) | |
5619 | return retval; | |
5620 | ||
5621 | /* Here we know we have a symbol, so we'll execute this loop | |
5622 | at least once. */ | |
5623 | do | |
5624 | { | |
5625 | /* The second to last param, 1, says this is in a common block. */ | |
5626 | retval = verify_bind_c_sym (curr_sym, &(curr_sym->ts), 1, com_block); | |
5627 | curr_sym = curr_sym->common_next; | |
8db94b3b | 5628 | } while (curr_sym != NULL); |
c5d33754 | 5629 | |
5630 | return retval; | |
5631 | } | |
5632 | ||
5633 | ||
5634 | /* Verify that a given BIND(C) symbol is C interoperable. If it is not, | |
5635 | an appropriate error message is reported. */ | |
5636 | ||
60e19868 | 5637 | bool |
c5d33754 | 5638 | verify_bind_c_sym (gfc_symbol *tmp_sym, gfc_typespec *ts, |
5639 | int is_in_common, gfc_common_head *com_block) | |
5640 | { | |
1f2ab120 | 5641 | bool bind_c_function = false; |
60e19868 | 5642 | bool retval = true; |
4f7bb9ec | 5643 | |
1f2ab120 | 5644 | if (tmp_sym->attr.function && tmp_sym->attr.is_bind_c) |
5645 | bind_c_function = true; | |
5646 | ||
4f7bb9ec | 5647 | if (tmp_sym->attr.function && tmp_sym->result != NULL) |
5648 | { | |
5649 | tmp_sym = tmp_sym->result; | |
5650 | /* Make sure it wasn't an implicitly typed result. */ | |
bf79c656 | 5651 | if (tmp_sym->attr.implicit_type && warn_c_binding_type) |
4f7bb9ec | 5652 | { |
4166acc7 | 5653 | gfc_warning (OPT_Wc_binding_type, |
5654 | "Implicitly declared BIND(C) function %qs at " | |
4f7bb9ec | 5655 | "%L may not be C interoperable", tmp_sym->name, |
5656 | &tmp_sym->declared_at); | |
5657 | tmp_sym->ts.f90_type = tmp_sym->ts.type; | |
5658 | /* Mark it as C interoperable to prevent duplicate warnings. */ | |
5659 | tmp_sym->ts.is_c_interop = 1; | |
5660 | tmp_sym->attr.is_c_interop = 1; | |
5661 | } | |
5662 | } | |
1f2ab120 | 5663 | |
c5d33754 | 5664 | /* Here, we know we have the bind(c) attribute, so if we have |
5665 | enough type info, then verify that it's a C interop kind. | |
5666 | The info could be in the symbol already, or possibly still in | |
5667 | the given ts (current_ts), so look in both. */ | |
8db94b3b | 5668 | if (tmp_sym->ts.type != BT_UNKNOWN || ts->type != BT_UNKNOWN) |
c5d33754 | 5669 | { |
60e19868 | 5670 | if (!gfc_verify_c_interop (&(tmp_sym->ts))) |
c5d33754 | 5671 | { |
5672 | /* See if we're dealing with a sym in a common block or not. */ | |
bf79c656 | 5673 | if (is_in_common == 1 && warn_c_binding_type) |
c5d33754 | 5674 | { |
4166acc7 | 5675 | gfc_warning (OPT_Wc_binding_type, |
5676 | "Variable %qs in common block %qs at %L " | |
c5d33754 | 5677 | "may not be a C interoperable " |
4166acc7 | 5678 | "kind though common block %qs is BIND(C)", |
c5d33754 | 5679 | tmp_sym->name, com_block->name, |
5680 | &(tmp_sym->declared_at), com_block->name); | |
5681 | } | |
5682 | else | |
5683 | { | |
5684 | if (tmp_sym->ts.type == BT_DERIVED || ts->type == BT_DERIVED) | |
716da296 | 5685 | gfc_error ("Type declaration %qs at %L is not C " |
c5d33754 | 5686 | "interoperable but it is BIND(C)", |
5687 | tmp_sym->name, &(tmp_sym->declared_at)); | |
bf79c656 | 5688 | else if (warn_c_binding_type) |
4166acc7 | 5689 | gfc_warning (OPT_Wc_binding_type, "Variable %qs at %L " |
c5d33754 | 5690 | "may not be a C interoperable " |
716da296 | 5691 | "kind but it is BIND(C)", |
c5d33754 | 5692 | tmp_sym->name, &(tmp_sym->declared_at)); |
5693 | } | |
5694 | } | |
8db94b3b | 5695 | |
c5d33754 | 5696 | /* Variables declared w/in a common block can't be bind(c) |
5697 | since there's no way for C to see these variables, so there's | |
5698 | semantically no reason for the attribute. */ | |
5699 | if (is_in_common == 1 && tmp_sym->attr.is_bind_c == 1) | |
5700 | { | |
716da296 | 5701 | gfc_error ("Variable %qs in common block %qs at " |
c5d33754 | 5702 | "%L cannot be declared with BIND(C) " |
5703 | "since it is not a global", | |
5704 | tmp_sym->name, com_block->name, | |
5705 | &(tmp_sym->declared_at)); | |
60e19868 | 5706 | retval = false; |
c5d33754 | 5707 | } |
8db94b3b | 5708 | |
f4d3c071 | 5709 | /* Scalar variables that are bind(c) cannot have the pointer |
c5d33754 | 5710 | or allocatable attributes. */ |
5711 | if (tmp_sym->attr.is_bind_c == 1) | |
5712 | { | |
5713 | if (tmp_sym->attr.pointer == 1) | |
5714 | { | |
716da296 | 5715 | gfc_error ("Variable %qs at %L cannot have both the " |
c5d33754 | 5716 | "POINTER and BIND(C) attributes", |
5717 | tmp_sym->name, &(tmp_sym->declared_at)); | |
60e19868 | 5718 | retval = false; |
c5d33754 | 5719 | } |
5720 | ||
5721 | if (tmp_sym->attr.allocatable == 1) | |
5722 | { | |
716da296 | 5723 | gfc_error ("Variable %qs at %L cannot have both the " |
c5d33754 | 5724 | "ALLOCATABLE and BIND(C) attributes", |
5725 | tmp_sym->name, &(tmp_sym->declared_at)); | |
60e19868 | 5726 | retval = false; |
c5d33754 | 5727 | } |
5728 | ||
1f2ab120 | 5729 | } |
5730 | ||
5731 | /* If it is a BIND(C) function, make sure the return value is a | |
5732 | scalar value. The previous tests in this function made sure | |
5733 | the type is interoperable. */ | |
5734 | if (bind_c_function && tmp_sym->as != NULL) | |
716da296 | 5735 | gfc_error ("Return type of BIND(C) function %qs at %L cannot " |
1f2ab120 | 5736 | "be an array", tmp_sym->name, &(tmp_sym->declared_at)); |
5737 | ||
f4d3c071 | 5738 | /* BIND(C) functions cannot return a character string. */ |
1f2ab120 | 5739 | if (bind_c_function && tmp_sym->ts.type == BT_CHARACTER) |
eeebe20b | 5740 | if (tmp_sym->ts.u.cl == NULL || tmp_sym->ts.u.cl->length == NULL |
5741 | || tmp_sym->ts.u.cl->length->expr_type != EXPR_CONSTANT | |
5742 | || mpz_cmp_si (tmp_sym->ts.u.cl->length->value.integer, 1) != 0) | |
f6c28593 | 5743 | gfc_error ("Return type of BIND(C) function %qs of character " |
c014d57d | 5744 | "type at %L must have length 1", tmp_sym->name, |
c5d33754 | 5745 | &(tmp_sym->declared_at)); |
c5d33754 | 5746 | } |
5747 | ||
5748 | /* See if the symbol has been marked as private. If it has, make sure | |
5749 | there is no binding label and warn the user if there is one. */ | |
5750 | if (tmp_sym->attr.access == ACCESS_PRIVATE | |
7b2060ba | 5751 | && tmp_sym->binding_label) |
c5d33754 | 5752 | /* Use gfc_warning_now because we won't say that the symbol fails |
5753 | just because of this. */ | |
6f521718 | 5754 | gfc_warning_now (0, "Symbol %qs at %L is marked PRIVATE but has been " |
bf79c656 | 5755 | "given the binding label %qs", tmp_sym->name, |
c5d33754 | 5756 | &(tmp_sym->declared_at), tmp_sym->binding_label); |
5757 | ||
5758 | return retval; | |
5759 | } | |
5760 | ||
5761 | ||
5762 | /* Set the appropriate fields for a symbol that's been declared as | |
5763 | BIND(C) (the is_bind_c flag and the binding label), and verify that | |
5764 | the type is C interoperable. Errors are reported by the functions | |
5765 | used to set/test these fields. */ | |
5766 | ||
60e19868 | 5767 | bool |
c5d33754 | 5768 | set_verify_bind_c_sym (gfc_symbol *tmp_sym, int num_idents) |
5769 | { | |
60e19868 | 5770 | bool retval = true; |
8db94b3b | 5771 | |
c5d33754 | 5772 | /* TODO: Do we need to make sure the vars aren't marked private? */ |
5773 | ||
5774 | /* Set the is_bind_c bit in symbol_attribute. */ | |
5775 | gfc_add_is_bind_c (&(tmp_sym->attr), tmp_sym->name, &gfc_current_locus, 0); | |
5776 | ||
60e19868 | 5777 | if (!set_binding_label (&tmp_sym->binding_label, tmp_sym->name, num_idents)) |
5778 | return false; | |
c5d33754 | 5779 | |
5780 | return retval; | |
5781 | } | |
5782 | ||
5783 | ||
5784 | /* Set the fields marking the given common block as BIND(C), including | |
5785 | a binding label, and report any errors encountered. */ | |
5786 | ||
60e19868 | 5787 | bool |
c5d33754 | 5788 | set_verify_bind_c_com_block (gfc_common_head *com_block, int num_idents) |
5789 | { | |
60e19868 | 5790 | bool retval = true; |
8db94b3b | 5791 | |
c5d33754 | 5792 | /* destLabel, common name, typespec (which may have binding label). */ |
76e207a9 | 5793 | if (!set_binding_label (&com_block->binding_label, com_block->name, |
60e19868 | 5794 | num_idents)) |
5795 | return false; | |
c5d33754 | 5796 | |
5797 | /* Set the given common block (com_block) to being bind(c) (1). */ | |
5798 | set_com_block_bind_c (com_block, 1); | |
5799 | ||
5800 | return retval; | |
5801 | } | |
5802 | ||
5803 | ||
5804 | /* Retrieve the list of one or more identifiers that the given bind(c) | |
5805 | attribute applies to. */ | |
5806 | ||
60e19868 | 5807 | bool |
c5d33754 | 5808 | get_bind_c_idents (void) |
5809 | { | |
5810 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5811 | int num_idents = 0; | |
5812 | gfc_symbol *tmp_sym = NULL; | |
5813 | match found_id; | |
5814 | gfc_common_head *com_block = NULL; | |
8db94b3b | 5815 | |
c5d33754 | 5816 | if (gfc_match_name (name) == MATCH_YES) |
5817 | { | |
5818 | found_id = MATCH_YES; | |
5819 | gfc_get_ha_symbol (name, &tmp_sym); | |
5820 | } | |
5821 | else if (match_common_name (name) == MATCH_YES) | |
5822 | { | |
5823 | found_id = MATCH_YES; | |
5824 | com_block = gfc_get_common (name, 0); | |
5825 | } | |
5826 | else | |
5827 | { | |
5828 | gfc_error ("Need either entity or common block name for " | |
5829 | "attribute specification statement at %C"); | |
60e19868 | 5830 | return false; |
c5d33754 | 5831 | } |
8db94b3b | 5832 | |
c5d33754 | 5833 | /* Save the current identifier and look for more. */ |
5834 | do | |
5835 | { | |
5836 | /* Increment the number of identifiers found for this spec stmt. */ | |
5837 | num_idents++; | |
5838 | ||
5839 | /* Make sure we have a sym or com block, and verify that it can | |
5840 | be bind(c). Set the appropriate field(s) and look for more | |
5841 | identifiers. */ | |
8db94b3b | 5842 | if (tmp_sym != NULL || com_block != NULL) |
c5d33754 | 5843 | { |
5844 | if (tmp_sym != NULL) | |
5845 | { | |
60e19868 | 5846 | if (!set_verify_bind_c_sym (tmp_sym, num_idents)) |
5847 | return false; | |
c5d33754 | 5848 | } |
5849 | else | |
5850 | { | |
60e19868 | 5851 | if (!set_verify_bind_c_com_block (com_block, num_idents)) |
5852 | return false; | |
c5d33754 | 5853 | } |
8db94b3b | 5854 | |
c5d33754 | 5855 | /* Look to see if we have another identifier. */ |
5856 | tmp_sym = NULL; | |
5857 | if (gfc_match_eos () == MATCH_YES) | |
5858 | found_id = MATCH_NO; | |
5859 | else if (gfc_match_char (',') != MATCH_YES) | |
5860 | found_id = MATCH_NO; | |
5861 | else if (gfc_match_name (name) == MATCH_YES) | |
5862 | { | |
5863 | found_id = MATCH_YES; | |
5864 | gfc_get_ha_symbol (name, &tmp_sym); | |
5865 | } | |
5866 | else if (match_common_name (name) == MATCH_YES) | |
5867 | { | |
5868 | found_id = MATCH_YES; | |
5869 | com_block = gfc_get_common (name, 0); | |
5870 | } | |
5871 | else | |
5872 | { | |
5873 | gfc_error ("Missing entity or common block name for " | |
5874 | "attribute specification statement at %C"); | |
60e19868 | 5875 | return false; |
c5d33754 | 5876 | } |
5877 | } | |
5878 | else | |
5879 | { | |
5880 | gfc_internal_error ("Missing symbol"); | |
5881 | } | |
5882 | } while (found_id == MATCH_YES); | |
5883 | ||
5884 | /* if we get here we were successful */ | |
60e19868 | 5885 | return true; |
c5d33754 | 5886 | } |
5887 | ||
5888 | ||
5889 | /* Try and match a BIND(C) attribute specification statement. */ | |
8db94b3b | 5890 | |
c5d33754 | 5891 | match |
5892 | gfc_match_bind_c_stmt (void) | |
5893 | { | |
5894 | match found_match = MATCH_NO; | |
5895 | gfc_typespec *ts; | |
5896 | ||
5897 | ts = ¤t_ts; | |
8db94b3b | 5898 | |
c5d33754 | 5899 | /* This may not be necessary. */ |
5900 | gfc_clear_ts (ts); | |
5901 | /* Clear the temporary binding label holder. */ | |
7b2060ba | 5902 | curr_binding_label = NULL; |
c5d33754 | 5903 | |
5904 | /* Look for the bind(c). */ | |
75ae7f6c | 5905 | found_match = gfc_match_bind_c (NULL, true); |
c5d33754 | 5906 | |
5907 | if (found_match == MATCH_YES) | |
5908 | { | |
7a914593 | 5909 | if (!gfc_notify_std (GFC_STD_F2003, "BIND(C) statement at %C")) |
5910 | return MATCH_ERROR; | |
5911 | ||
c5d33754 | 5912 | /* Look for the :: now, but it is not required. */ |
5913 | gfc_match (" :: "); | |
5914 | ||
5915 | /* Get the identifier(s) that needs to be updated. This may need to | |
5916 | change to hand the flag(s) for the attr specified so all identifiers | |
5917 | found can have all appropriate parts updated (assuming that the same | |
5918 | spec stmt can have multiple attrs, such as both bind(c) and | |
5919 | allocatable...). */ | |
60e19868 | 5920 | if (!get_bind_c_idents ()) |
c5d33754 | 5921 | /* Error message should have printed already. */ |
5922 | return MATCH_ERROR; | |
5923 | } | |
5924 | ||
5925 | return found_match; | |
5926 | } | |
5927 | ||
5928 | ||
4ee9c684 | 5929 | /* Match a data declaration statement. */ |
5930 | ||
5931 | match | |
5932 | gfc_match_data_decl (void) | |
5933 | { | |
5934 | gfc_symbol *sym; | |
5935 | match m; | |
3923b69f | 5936 | int elem; |
4ee9c684 | 5937 | |
9d958d5b | 5938 | type_param_spec_list = NULL; |
5939 | decl_type_param_list = NULL; | |
5940 | ||
c5d33754 | 5941 | num_idents_on_line = 0; |
8db94b3b | 5942 | |
e8152f13 | 5943 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
4ee9c684 | 5944 | if (m != MATCH_YES) |
5945 | return m; | |
5946 | ||
b3704193 | 5947 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
d7cd448a | 5948 | && !gfc_comp_struct (gfc_current_state ())) |
4ee9c684 | 5949 | { |
eeebe20b | 5950 | sym = gfc_use_derived (current_ts.u.derived); |
4ee9c684 | 5951 | |
5952 | if (sym == NULL) | |
5953 | { | |
5954 | m = MATCH_ERROR; | |
5955 | goto cleanup; | |
5956 | } | |
5957 | ||
eeebe20b | 5958 | current_ts.u.derived = sym; |
4ee9c684 | 5959 | } |
5960 | ||
5961 | m = match_attr_spec (); | |
5962 | if (m == MATCH_ERROR) | |
5963 | { | |
5964 | m = MATCH_NO; | |
5965 | goto cleanup; | |
5966 | } | |
5967 | ||
a90fe829 | 5968 | if (current_ts.type == BT_CLASS |
5969 | && current_ts.u.derived->attr.unlimited_polymorphic) | |
5970 | goto ok; | |
5971 | ||
b3704193 | 5972 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
5973 | && current_ts.u.derived->components == NULL | |
eeebe20b | 5974 | && !current_ts.u.derived->attr.zero_comp) |
4ee9c684 | 5975 | { |
5976 | ||
d7cd448a | 5977 | if (current_attr.pointer && gfc_comp_struct (gfc_current_state ())) |
4ee9c684 | 5978 | goto ok; |
5979 | ||
2fbfb5cf | 5980 | if (current_attr.allocatable && gfc_current_state () == COMP_DERIVED) |
dd7553fe | 5981 | goto ok; |
5982 | ||
eeebe20b | 5983 | gfc_find_symbol (current_ts.u.derived->name, |
d67dd34f | 5984 | current_ts.u.derived->ns, 1, &sym); |
4ee9c684 | 5985 | |
40cf8078 | 5986 | /* Any symbol that we find had better be a type definition |
d7cd448a | 5987 | which has its components defined, or be a structure definition |
5988 | actively being parsed. */ | |
5989 | if (sym != NULL && gfc_fl_struct (sym->attr.flavor) | |
eeebe20b | 5990 | && (current_ts.u.derived->components != NULL |
d7cd448a | 5991 | || current_ts.u.derived->attr.zero_comp |
5992 | || current_ts.u.derived == gfc_new_block)) | |
4ee9c684 | 5993 | goto ok; |
5994 | ||
a1e76cd9 | 5995 | gfc_error ("Derived type at %C has not been previously defined " |
5996 | "and so cannot appear in a derived type definition"); | |
5997 | m = MATCH_ERROR; | |
5998 | goto cleanup; | |
4ee9c684 | 5999 | } |
6000 | ||
6001 | ok: | |
6002 | /* If we have an old-style character declaration, and no new-style | |
6003 | attribute specifications, then there a comma is optional between | |
6004 | the type specification and the variable list. */ | |
6005 | if (m == MATCH_NO && current_ts.type == BT_CHARACTER && old_char_selector) | |
6006 | gfc_match_char (','); | |
6007 | ||
3923b69f | 6008 | /* Give the types/attributes to symbols that follow. Give the element |
6009 | a number so that repeat character length expressions can be copied. */ | |
6010 | elem = 1; | |
4ee9c684 | 6011 | for (;;) |
6012 | { | |
c5d33754 | 6013 | num_idents_on_line++; |
3923b69f | 6014 | m = variable_decl (elem++); |
4ee9c684 | 6015 | if (m == MATCH_ERROR) |
6016 | goto cleanup; | |
6017 | if (m == MATCH_NO) | |
6018 | break; | |
6019 | ||
6020 | if (gfc_match_eos () == MATCH_YES) | |
6021 | goto cleanup; | |
6022 | if (gfc_match_char (',') != MATCH_YES) | |
6023 | break; | |
6024 | } | |
6025 | ||
389e3a5e | 6026 | if (!gfc_error_flag_test ()) |
c717a688 | 6027 | { |
6028 | /* An anonymous structure declaration is unambiguous; if we matched one | |
6029 | according to gfc_match_structure_decl, we need to return MATCH_YES | |
6030 | here to avoid confusing the remaining matchers, even if there was an | |
6031 | error during variable_decl. We must flush any such errors. Note this | |
6032 | causes the parser to gracefully continue parsing the remaining input | |
6033 | as a structure body, which likely follows. */ | |
6034 | if (current_ts.type == BT_DERIVED && current_ts.u.derived | |
6035 | && gfc_fl_struct (current_ts.u.derived->attr.flavor)) | |
6036 | { | |
6037 | gfc_error_now ("Syntax error in anonymous structure declaration" | |
6038 | " at %C"); | |
6039 | /* Skip the bad variable_decl and line up for the start of the | |
6040 | structure body. */ | |
6041 | gfc_error_recovery (); | |
6042 | m = MATCH_YES; | |
6043 | goto cleanup; | |
6044 | } | |
6045 | ||
6046 | gfc_error ("Syntax error in data declaration at %C"); | |
6047 | } | |
6048 | ||
4ee9c684 | 6049 | m = MATCH_ERROR; |
6050 | ||
af29c1f0 | 6051 | gfc_free_data_all (gfc_current_ns); |
6052 | ||
4ee9c684 | 6053 | cleanup: |
9d958d5b | 6054 | if (saved_kind_expr) |
6055 | gfc_free_expr (saved_kind_expr); | |
6056 | if (type_param_spec_list) | |
6057 | gfc_free_actual_arglist (type_param_spec_list); | |
6058 | if (decl_type_param_list) | |
6059 | gfc_free_actual_arglist (decl_type_param_list); | |
6060 | saved_kind_expr = NULL; | |
4ee9c684 | 6061 | gfc_free_array_spec (current_as); |
6062 | current_as = NULL; | |
6063 | return m; | |
6064 | } | |
6065 | ||
6066 | ||
6067 | /* Match a prefix associated with a function or subroutine | |
6068 | declaration. If the typespec pointer is nonnull, then a typespec | |
6069 | can be matched. Note that if nothing matches, MATCH_YES is | |
6070 | returned (the null string was matched). */ | |
6071 | ||
077932f9 | 6072 | match |
6073 | gfc_match_prefix (gfc_typespec *ts) | |
4ee9c684 | 6074 | { |
5b11d932 | 6075 | bool seen_type; |
4e4ea00b | 6076 | bool seen_impure; |
6077 | bool found_prefix; | |
4ee9c684 | 6078 | |
6079 | gfc_clear_attr (¤t_attr); | |
4e4ea00b | 6080 | seen_type = false; |
6081 | seen_impure = false; | |
4ee9c684 | 6082 | |
d1645c7b | 6083 | gcc_assert (!gfc_matching_prefix); |
6084 | gfc_matching_prefix = true; | |
40de255b | 6085 | |
4e4ea00b | 6086 | do |
4ee9c684 | 6087 | { |
4e4ea00b | 6088 | found_prefix = false; |
4ee9c684 | 6089 | |
76e207a9 | 6090 | /* MODULE is a prefix like PURE, ELEMENTAL, etc., having a |
6091 | corresponding attribute seems natural and distinguishes these | |
6092 | procedures from procedure types of PROC_MODULE, which these are | |
6093 | as well. */ | |
6094 | if (gfc_match ("module% ") == MATCH_YES) | |
6095 | { | |
6096 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE prefix at %C")) | |
6097 | goto error; | |
6098 | ||
6099 | current_attr.module_procedure = 1; | |
6100 | found_prefix = true; | |
6101 | } | |
6102 | ||
4e4ea00b | 6103 | if (!seen_type && ts != NULL |
6104 | && gfc_match_decl_type_spec (ts, 0) == MATCH_YES | |
6105 | && gfc_match_space () == MATCH_YES) | |
6106 | { | |
4ee9c684 | 6107 | |
4e4ea00b | 6108 | seen_type = true; |
6109 | found_prefix = true; | |
6110 | } | |
6111 | ||
6112 | if (gfc_match ("elemental% ") == MATCH_YES) | |
6113 | { | |
60e19868 | 6114 | if (!gfc_add_elemental (¤t_attr, NULL)) |
4e4ea00b | 6115 | goto error; |
6116 | ||
6117 | found_prefix = true; | |
6118 | } | |
6119 | ||
6120 | if (gfc_match ("pure% ") == MATCH_YES) | |
6121 | { | |
60e19868 | 6122 | if (!gfc_add_pure (¤t_attr, NULL)) |
4e4ea00b | 6123 | goto error; |
6124 | ||
6125 | found_prefix = true; | |
6126 | } | |
4ee9c684 | 6127 | |
4e4ea00b | 6128 | if (gfc_match ("recursive% ") == MATCH_YES) |
6129 | { | |
60e19868 | 6130 | if (!gfc_add_recursive (¤t_attr, NULL)) |
4e4ea00b | 6131 | goto error; |
6132 | ||
6133 | found_prefix = true; | |
6134 | } | |
6135 | ||
6136 | /* IMPURE is a somewhat special case, as it needs not set an actual | |
6137 | attribute but rather only prevents ELEMENTAL routines from being | |
6138 | automatically PURE. */ | |
6139 | if (gfc_match ("impure% ") == MATCH_YES) | |
6140 | { | |
60e19868 | 6141 | if (!gfc_notify_std (GFC_STD_F2008, "IMPURE procedure at %C")) |
4e4ea00b | 6142 | goto error; |
6143 | ||
6144 | seen_impure = true; | |
6145 | found_prefix = true; | |
6146 | } | |
4ee9c684 | 6147 | } |
4e4ea00b | 6148 | while (found_prefix); |
4ee9c684 | 6149 | |
4e4ea00b | 6150 | /* IMPURE and PURE must not both appear, of course. */ |
6151 | if (seen_impure && current_attr.pure) | |
4ee9c684 | 6152 | { |
4e4ea00b | 6153 | gfc_error ("PURE and IMPURE must not appear both at %C"); |
6154 | goto error; | |
4ee9c684 | 6155 | } |
6156 | ||
4e4ea00b | 6157 | /* If IMPURE it not seen but the procedure is ELEMENTAL, mark it as PURE. */ |
6158 | if (!seen_impure && current_attr.elemental && !current_attr.pure) | |
4ee9c684 | 6159 | { |
60e19868 | 6160 | if (!gfc_add_pure (¤t_attr, NULL)) |
40de255b | 6161 | goto error; |
4ee9c684 | 6162 | } |
6163 | ||
6164 | /* At this point, the next item is not a prefix. */ | |
d1645c7b | 6165 | gcc_assert (gfc_matching_prefix); |
4b8eb6ca | 6166 | |
d1645c7b | 6167 | gfc_matching_prefix = false; |
4ee9c684 | 6168 | return MATCH_YES; |
40de255b | 6169 | |
6170 | error: | |
d1645c7b | 6171 | gcc_assert (gfc_matching_prefix); |
6172 | gfc_matching_prefix = false; | |
40de255b | 6173 | return MATCH_ERROR; |
4ee9c684 | 6174 | } |
6175 | ||
6176 | ||
077932f9 | 6177 | /* Copy attributes matched by gfc_match_prefix() to attributes on a symbol. */ |
4ee9c684 | 6178 | |
60e19868 | 6179 | static bool |
1a9745d2 | 6180 | copy_prefix (symbol_attribute *dest, locus *where) |
4ee9c684 | 6181 | { |
7d7125df | 6182 | if (dest->module_procedure) |
6183 | { | |
6184 | if (current_attr.elemental) | |
6185 | dest->elemental = 1; | |
6186 | ||
6187 | if (current_attr.pure) | |
6188 | dest->pure = 1; | |
6189 | ||
6190 | if (current_attr.recursive) | |
6191 | dest->recursive = 1; | |
6192 | ||
6193 | /* Module procedures are unusual in that the 'dest' is copied from | |
6194 | the interface declaration. However, this is an oportunity to | |
6195 | check that the submodule declaration is compliant with the | |
6196 | interface. */ | |
6197 | if (dest->elemental && !current_attr.elemental) | |
6198 | { | |
6199 | gfc_error ("ELEMENTAL prefix in MODULE PROCEDURE interface is " | |
6200 | "missing at %L", where); | |
6201 | return false; | |
6202 | } | |
6203 | ||
6204 | if (dest->pure && !current_attr.pure) | |
6205 | { | |
6206 | gfc_error ("PURE prefix in MODULE PROCEDURE interface is " | |
6207 | "missing at %L", where); | |
6208 | return false; | |
6209 | } | |
6210 | ||
6211 | if (dest->recursive && !current_attr.recursive) | |
6212 | { | |
6213 | gfc_error ("RECURSIVE prefix in MODULE PROCEDURE interface is " | |
6214 | "missing at %L", where); | |
6215 | return false; | |
6216 | } | |
6217 | ||
6218 | return true; | |
6219 | } | |
4ee9c684 | 6220 | |
60e19868 | 6221 | if (current_attr.elemental && !gfc_add_elemental (dest, where)) |
6222 | return false; | |
4ee9c684 | 6223 | |
7d7125df | 6224 | if (current_attr.pure && !gfc_add_pure (dest, where)) |
6225 | return false; | |
6226 | ||
60e19868 | 6227 | if (current_attr.recursive && !gfc_add_recursive (dest, where)) |
6228 | return false; | |
4ee9c684 | 6229 | |
60e19868 | 6230 | return true; |
4ee9c684 | 6231 | } |
6232 | ||
6233 | ||
9d958d5b | 6234 | /* Match a formal argument list or, if typeparam is true, a |
6235 | type_param_name_list. */ | |
4ee9c684 | 6236 | |
6237 | match | |
9d958d5b | 6238 | gfc_match_formal_arglist (gfc_symbol *progname, int st_flag, |
6239 | int null_flag, bool typeparam) | |
4ee9c684 | 6240 | { |
6241 | gfc_formal_arglist *head, *tail, *p, *q; | |
6242 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6243 | gfc_symbol *sym; | |
6244 | match m; | |
4b8eb6ca | 6245 | gfc_formal_arglist *formal = NULL; |
4ee9c684 | 6246 | |
6247 | head = tail = NULL; | |
6248 | ||
4b8eb6ca | 6249 | /* Keep the interface formal argument list and null it so that the |
6250 | matching for the new declaration can be done. The numbers and | |
6251 | names of the arguments are checked here. The interface formal | |
6252 | arguments are retained in formal_arglist and the characteristics | |
6253 | are compared in resolve.c(resolve_fl_procedure). See the remark | |
6254 | in get_proc_name about the eventual need to copy the formal_arglist | |
6255 | and populate the formal namespace of the interface symbol. */ | |
6256 | if (progname->attr.module_procedure | |
6257 | && progname->attr.host_assoc) | |
6258 | { | |
6259 | formal = progname->formal; | |
6260 | progname->formal = NULL; | |
6261 | } | |
6262 | ||
4ee9c684 | 6263 | if (gfc_match_char ('(') != MATCH_YES) |
6264 | { | |
6265 | if (null_flag) | |
6266 | goto ok; | |
6267 | return MATCH_NO; | |
6268 | } | |
6269 | ||
6270 | if (gfc_match_char (')') == MATCH_YES) | |
6271 | goto ok; | |
6272 | ||
6273 | for (;;) | |
6274 | { | |
6275 | if (gfc_match_char ('*') == MATCH_YES) | |
a5d831e5 | 6276 | { |
6277 | sym = NULL; | |
f0efd2e8 | 6278 | if (!typeparam && !gfc_notify_std (GFC_STD_F95_OBS, |
6279 | "Alternate-return argument at %C")) | |
a5d831e5 | 6280 | { |
6281 | m = MATCH_ERROR; | |
6282 | goto cleanup; | |
6283 | } | |
f0efd2e8 | 6284 | else if (typeparam) |
6285 | gfc_error_now ("A parameter name is required at %C"); | |
a5d831e5 | 6286 | } |
4ee9c684 | 6287 | else |
6288 | { | |
6289 | m = gfc_match_name (name); | |
6290 | if (m != MATCH_YES) | |
f0efd2e8 | 6291 | { |
6292 | if(typeparam) | |
6293 | gfc_error_now ("A parameter name is required at %C"); | |
6294 | goto cleanup; | |
6295 | } | |
4ee9c684 | 6296 | |
9d958d5b | 6297 | if (!typeparam && gfc_get_symbol (name, NULL, &sym)) |
6298 | goto cleanup; | |
6299 | else if (typeparam | |
6300 | && gfc_get_symbol (name, progname->f2k_derived, &sym)) | |
4ee9c684 | 6301 | goto cleanup; |
6302 | } | |
6303 | ||
6304 | p = gfc_get_formal_arglist (); | |
6305 | ||
6306 | if (head == NULL) | |
6307 | head = tail = p; | |
6308 | else | |
6309 | { | |
6310 | tail->next = p; | |
6311 | tail = p; | |
6312 | } | |
6313 | ||
6314 | tail->sym = sym; | |
6315 | ||
6316 | /* We don't add the VARIABLE flavor because the name could be a | |
1a9745d2 | 6317 | dummy procedure. We don't apply these attributes to formal |
6318 | arguments of statement functions. */ | |
4ee9c684 | 6319 | if (sym != NULL && !st_flag |
60e19868 | 6320 | && (!gfc_add_dummy(&sym->attr, sym->name, NULL) |
6321 | || !gfc_missing_attr (&sym->attr, NULL))) | |
4ee9c684 | 6322 | { |
6323 | m = MATCH_ERROR; | |
6324 | goto cleanup; | |
6325 | } | |
6326 | ||
6327 | /* The name of a program unit can be in a different namespace, | |
1a9745d2 | 6328 | so check for it explicitly. After the statement is accepted, |
6329 | the name is checked for especially in gfc_get_symbol(). */ | |
1148eb54 | 6330 | if (gfc_new_block != NULL && sym != NULL && !typeparam |
4ee9c684 | 6331 | && strcmp (sym->name, gfc_new_block->name) == 0) |
6332 | { | |
716da296 | 6333 | gfc_error ("Name %qs at %C is the name of the procedure", |
4ee9c684 | 6334 | sym->name); |
6335 | m = MATCH_ERROR; | |
6336 | goto cleanup; | |
6337 | } | |
6338 | ||
6339 | if (gfc_match_char (')') == MATCH_YES) | |
6340 | goto ok; | |
6341 | ||
6342 | m = gfc_match_char (','); | |
6343 | if (m != MATCH_YES) | |
6344 | { | |
1148eb54 | 6345 | if (typeparam) |
6346 | gfc_error_now ("Expected parameter list in type declaration " | |
6347 | "at %C"); | |
6348 | else | |
6349 | gfc_error ("Unexpected junk in formal argument list at %C"); | |
4ee9c684 | 6350 | goto cleanup; |
6351 | } | |
6352 | } | |
6353 | ||
6354 | ok: | |
6355 | /* Check for duplicate symbols in the formal argument list. */ | |
6356 | if (head != NULL) | |
6357 | { | |
6358 | for (p = head; p->next; p = p->next) | |
6359 | { | |
6360 | if (p->sym == NULL) | |
6361 | continue; | |
6362 | ||
6363 | for (q = p->next; q; q = q->next) | |
6364 | if (p->sym == q->sym) | |
6365 | { | |
1148eb54 | 6366 | if (typeparam) |
6367 | gfc_error_now ("Duplicate name %qs in parameter " | |
6368 | "list at %C", p->sym->name); | |
6369 | else | |
6370 | gfc_error ("Duplicate symbol %qs in formal argument " | |
6371 | "list at %C", p->sym->name); | |
4ee9c684 | 6372 | |
6373 | m = MATCH_ERROR; | |
6374 | goto cleanup; | |
6375 | } | |
6376 | } | |
6377 | } | |
6378 | ||
60e19868 | 6379 | if (!gfc_add_explicit_interface (progname, IFSRC_DECL, head, NULL)) |
4ee9c684 | 6380 | { |
6381 | m = MATCH_ERROR; | |
6382 | goto cleanup; | |
6383 | } | |
6384 | ||
cc78610f | 6385 | /* gfc_error_now used in following and return with MATCH_YES because |
6386 | doing otherwise results in a cascade of extraneous errors and in | |
6387 | some cases an ICE in symbol.c(gfc_release_symbol). */ | |
a23f57e2 | 6388 | if (progname->attr.module_procedure && progname->attr.host_assoc) |
4b8eb6ca | 6389 | { |
a23f57e2 | 6390 | bool arg_count_mismatch = false; |
6391 | ||
6392 | if (!formal && head) | |
6393 | arg_count_mismatch = true; | |
6394 | ||
6395 | /* Abbreviated module procedure declaration is not meant to have any | |
6396 | formal arguments! */ | |
cc78610f | 6397 | if (!progname->abr_modproc_decl && formal && !head) |
a23f57e2 | 6398 | arg_count_mismatch = true; |
6399 | ||
4b8eb6ca | 6400 | for (p = formal, q = head; p && q; p = p->next, q = q->next) |
6401 | { | |
6402 | if ((p->next != NULL && q->next == NULL) | |
6403 | || (p->next == NULL && q->next != NULL)) | |
a23f57e2 | 6404 | arg_count_mismatch = true; |
4b8eb6ca | 6405 | else if ((p->sym == NULL && q->sym == NULL) |
6406 | || strcmp (p->sym->name, q->sym->name) == 0) | |
6407 | continue; | |
6408 | else | |
6409 | gfc_error_now ("Mismatch in MODULE PROCEDURE formal " | |
6410 | "argument names (%s/%s) at %C", | |
6411 | p->sym->name, q->sym->name); | |
6412 | } | |
a23f57e2 | 6413 | |
6414 | if (arg_count_mismatch) | |
6415 | gfc_error_now ("Mismatch in number of MODULE PROCEDURE " | |
6416 | "formal arguments at %C"); | |
4b8eb6ca | 6417 | } |
6418 | ||
4ee9c684 | 6419 | return MATCH_YES; |
6420 | ||
6421 | cleanup: | |
6422 | gfc_free_formal_arglist (head); | |
6423 | return m; | |
6424 | } | |
6425 | ||
6426 | ||
6427 | /* Match a RESULT specification following a function declaration or | |
6428 | ENTRY statement. Also matches the end-of-statement. */ | |
6429 | ||
6430 | static match | |
f6d0e37a | 6431 | match_result (gfc_symbol *function, gfc_symbol **result) |
4ee9c684 | 6432 | { |
6433 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6434 | gfc_symbol *r; | |
6435 | match m; | |
6436 | ||
6437 | if (gfc_match (" result (") != MATCH_YES) | |
6438 | return MATCH_NO; | |
6439 | ||
6440 | m = gfc_match_name (name); | |
6441 | if (m != MATCH_YES) | |
6442 | return m; | |
6443 | ||
c5d33754 | 6444 | /* Get the right paren, and that's it because there could be the |
6445 | bind(c) attribute after the result clause. */ | |
60e19868 | 6446 | if (gfc_match_char (')') != MATCH_YES) |
4ee9c684 | 6447 | { |
c5d33754 | 6448 | /* TODO: should report the missing right paren here. */ |
4ee9c684 | 6449 | return MATCH_ERROR; |
6450 | } | |
6451 | ||
6452 | if (strcmp (function->name, name) == 0) | |
6453 | { | |
1a9745d2 | 6454 | gfc_error ("RESULT variable at %C must be different than function name"); |
4ee9c684 | 6455 | return MATCH_ERROR; |
6456 | } | |
6457 | ||
6458 | if (gfc_get_symbol (name, NULL, &r)) | |
6459 | return MATCH_ERROR; | |
6460 | ||
60e19868 | 6461 | if (!gfc_add_result (&r->attr, r->name, NULL)) |
4ee9c684 | 6462 | return MATCH_ERROR; |
6463 | ||
6464 | *result = r; | |
6465 | ||
6466 | return MATCH_YES; | |
6467 | } | |
6468 | ||
6469 | ||
c5d33754 | 6470 | /* Match a function suffix, which could be a combination of a result |
6471 | clause and BIND(C), either one, or neither. The draft does not | |
6472 | require them to come in a specific order. */ | |
6473 | ||
6474 | match | |
6475 | gfc_match_suffix (gfc_symbol *sym, gfc_symbol **result) | |
6476 | { | |
6477 | match is_bind_c; /* Found bind(c). */ | |
6478 | match is_result; /* Found result clause. */ | |
6479 | match found_match; /* Status of whether we've found a good match. */ | |
e0be6f02 | 6480 | char peek_char; /* Character we're going to peek at. */ |
75ae7f6c | 6481 | bool allow_binding_name; |
c5d33754 | 6482 | |
6483 | /* Initialize to having found nothing. */ | |
6484 | found_match = MATCH_NO; | |
8db94b3b | 6485 | is_bind_c = MATCH_NO; |
c5d33754 | 6486 | is_result = MATCH_NO; |
6487 | ||
6488 | /* Get the next char to narrow between result and bind(c). */ | |
6489 | gfc_gobble_whitespace (); | |
e0be6f02 | 6490 | peek_char = gfc_peek_ascii_char (); |
c5d33754 | 6491 | |
75ae7f6c | 6492 | /* C binding names are not allowed for internal procedures. */ |
6493 | if (gfc_current_state () == COMP_CONTAINS | |
6494 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
6495 | allow_binding_name = false; | |
6496 | else | |
6497 | allow_binding_name = true; | |
6498 | ||
c5d33754 | 6499 | switch (peek_char) |
6500 | { | |
6501 | case 'r': | |
6502 | /* Look for result clause. */ | |
6503 | is_result = match_result (sym, result); | |
6504 | if (is_result == MATCH_YES) | |
6505 | { | |
6506 | /* Now see if there is a bind(c) after it. */ | |
75ae7f6c | 6507 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
c5d33754 | 6508 | /* We've found the result clause and possibly bind(c). */ |
6509 | found_match = MATCH_YES; | |
6510 | } | |
6511 | else | |
6512 | /* This should only be MATCH_ERROR. */ | |
8db94b3b | 6513 | found_match = is_result; |
c5d33754 | 6514 | break; |
6515 | case 'b': | |
6516 | /* Look for bind(c) first. */ | |
75ae7f6c | 6517 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
c5d33754 | 6518 | if (is_bind_c == MATCH_YES) |
6519 | { | |
6520 | /* Now see if a result clause followed it. */ | |
6521 | is_result = match_result (sym, result); | |
6522 | found_match = MATCH_YES; | |
6523 | } | |
6524 | else | |
6525 | { | |
6526 | /* Should only be a MATCH_ERROR if we get here after seeing 'b'. */ | |
6527 | found_match = MATCH_ERROR; | |
6528 | } | |
6529 | break; | |
6530 | default: | |
6531 | gfc_error ("Unexpected junk after function declaration at %C"); | |
6532 | found_match = MATCH_ERROR; | |
6533 | break; | |
6534 | } | |
6535 | ||
c5d33754 | 6536 | if (is_bind_c == MATCH_YES) |
4518e961 | 6537 | { |
75ae7f6c | 6538 | /* Fortran 2008 draft allows BIND(C) for internal procedures. */ |
4518e961 | 6539 | if (gfc_current_state () == COMP_CONTAINS |
75ae7f6c | 6540 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
60e19868 | 6541 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
6542 | "at %L may not be specified for an internal " | |
6543 | "procedure", &gfc_current_locus)) | |
75ae7f6c | 6544 | return MATCH_ERROR; |
6545 | ||
60e19868 | 6546 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, &gfc_current_locus, 1)) |
4518e961 | 6547 | return MATCH_ERROR; |
6548 | } | |
8db94b3b | 6549 | |
c5d33754 | 6550 | return found_match; |
6551 | } | |
6552 | ||
6553 | ||
1e057e9b | 6554 | /* Procedure pointer return value without RESULT statement: |
6555 | Add "hidden" result variable named "ppr@". */ | |
6556 | ||
60e19868 | 6557 | static bool |
1e057e9b | 6558 | add_hidden_procptr_result (gfc_symbol *sym) |
6559 | { | |
6560 | bool case1,case2; | |
6561 | ||
6562 | if (gfc_notification_std (GFC_STD_F2003) == ERROR) | |
60e19868 | 6563 | return false; |
1e057e9b | 6564 | |
6565 | /* First usage case: PROCEDURE and EXTERNAL statements. */ | |
6566 | case1 = gfc_current_state () == COMP_FUNCTION && gfc_current_block () | |
6567 | && strcmp (gfc_current_block ()->name, sym->name) == 0 | |
6568 | && sym->attr.external; | |
6569 | /* Second usage case: INTERFACE statements. */ | |
6570 | case2 = gfc_current_state () == COMP_INTERFACE && gfc_state_stack->previous | |
6571 | && gfc_state_stack->previous->state == COMP_FUNCTION | |
6572 | && strcmp (gfc_state_stack->previous->sym->name, sym->name) == 0; | |
6573 | ||
6574 | if (case1 || case2) | |
6575 | { | |
6576 | gfc_symtree *stree; | |
6577 | if (case1) | |
36b0a1b0 | 6578 | gfc_get_sym_tree ("ppr@", gfc_current_ns, &stree, false); |
f8e5c21b | 6579 | else |
180a5dc0 | 6580 | { |
6581 | gfc_symtree *st2; | |
36b0a1b0 | 6582 | gfc_get_sym_tree ("ppr@", gfc_current_ns->parent, &stree, false); |
180a5dc0 | 6583 | st2 = gfc_new_symtree (&gfc_current_ns->sym_root, "ppr@"); |
6584 | st2->n.sym = stree->n.sym; | |
35ae89b7 | 6585 | stree->n.sym->refs++; |
180a5dc0 | 6586 | } |
1e057e9b | 6587 | sym->result = stree->n.sym; |
6588 | ||
6589 | sym->result->attr.proc_pointer = sym->attr.proc_pointer; | |
6590 | sym->result->attr.pointer = sym->attr.pointer; | |
6591 | sym->result->attr.external = sym->attr.external; | |
6592 | sym->result->attr.referenced = sym->attr.referenced; | |
e40ac2fe | 6593 | sym->result->ts = sym->ts; |
1e057e9b | 6594 | sym->attr.proc_pointer = 0; |
6595 | sym->attr.pointer = 0; | |
6596 | sym->attr.external = 0; | |
6597 | if (sym->result->attr.external && sym->result->attr.pointer) | |
6598 | { | |
6599 | sym->result->attr.pointer = 0; | |
6600 | sym->result->attr.proc_pointer = 1; | |
6601 | } | |
6602 | ||
6603 | return gfc_add_result (&sym->result->attr, sym->result->name, NULL); | |
6604 | } | |
6605 | /* POINTER after PROCEDURE/EXTERNAL/INTERFACE statement. */ | |
6606 | else if (sym->attr.function && !sym->attr.external && sym->attr.pointer | |
6607 | && sym->result && sym->result != sym && sym->result->attr.external | |
6608 | && sym == gfc_current_ns->proc_name | |
6609 | && sym == sym->result->ns->proc_name | |
6610 | && strcmp ("ppr@", sym->result->name) == 0) | |
6611 | { | |
6612 | sym->result->attr.proc_pointer = 1; | |
6613 | sym->attr.pointer = 0; | |
60e19868 | 6614 | return true; |
1e057e9b | 6615 | } |
6616 | else | |
60e19868 | 6617 | return false; |
1e057e9b | 6618 | } |
6619 | ||
6620 | ||
64e93293 | 6621 | /* Match the interface for a PROCEDURE declaration, |
6622 | including brackets (R1212). */ | |
af1a34ee | 6623 | |
6624 | static match | |
64e93293 | 6625 | match_procedure_interface (gfc_symbol **proc_if) |
af1a34ee | 6626 | { |
6627 | match m; | |
1eb2b542 | 6628 | gfc_symtree *st; |
af1a34ee | 6629 | locus old_loc, entry_loc; |
1eb2b542 | 6630 | gfc_namespace *old_ns = gfc_current_ns; |
6631 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
af1a34ee | 6632 | |
1eb2b542 | 6633 | old_loc = entry_loc = gfc_current_locus; |
af1a34ee | 6634 | gfc_clear_ts (¤t_ts); |
6635 | ||
6636 | if (gfc_match (" (") != MATCH_YES) | |
6637 | { | |
6638 | gfc_current_locus = entry_loc; | |
6639 | return MATCH_NO; | |
6640 | } | |
6641 | ||
6642 | /* Get the type spec. for the procedure interface. */ | |
6643 | old_loc = gfc_current_locus; | |
e8152f13 | 6644 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
fd1277c3 | 6645 | gfc_gobble_whitespace (); |
e0be6f02 | 6646 | if (m == MATCH_YES || (m == MATCH_NO && gfc_peek_ascii_char () == ')')) |
af1a34ee | 6647 | goto got_ts; |
6648 | ||
6649 | if (m == MATCH_ERROR) | |
6650 | return m; | |
6651 | ||
1eb2b542 | 6652 | /* Procedure interface is itself a procedure. */ |
af1a34ee | 6653 | gfc_current_locus = old_loc; |
1eb2b542 | 6654 | m = gfc_match_name (name); |
af1a34ee | 6655 | |
1eb2b542 | 6656 | /* First look to see if it is already accessible in the current |
6657 | namespace because it is use associated or contained. */ | |
6658 | st = NULL; | |
6659 | if (gfc_find_sym_tree (name, NULL, 0, &st)) | |
6660 | return MATCH_ERROR; | |
6661 | ||
6662 | /* If it is still not found, then try the parent namespace, if it | |
6663 | exists and create the symbol there if it is still not found. */ | |
6664 | if (gfc_current_ns->parent) | |
6665 | gfc_current_ns = gfc_current_ns->parent; | |
6666 | if (st == NULL && gfc_get_ha_sym_tree (name, &st)) | |
6667 | return MATCH_ERROR; | |
6668 | ||
6669 | gfc_current_ns = old_ns; | |
6670 | *proc_if = st->n.sym; | |
af1a34ee | 6671 | |
64e93293 | 6672 | if (*proc_if) |
af1a34ee | 6673 | { |
64e93293 | 6674 | (*proc_if)->refs++; |
74113644 | 6675 | /* Resolve interface if possible. That way, attr.procedure is only set |
6676 | if it is declared by a later procedure-declaration-stmt, which is | |
87863b31 | 6677 | invalid per F08:C1216 (cf. resolve_procedure_interface). */ |
7e9136f1 | 6678 | while ((*proc_if)->ts.interface |
6679 | && *proc_if != (*proc_if)->ts.interface) | |
64e93293 | 6680 | *proc_if = (*proc_if)->ts.interface; |
74113644 | 6681 | |
87863b31 | 6682 | if ((*proc_if)->attr.flavor == FL_UNKNOWN |
6683 | && (*proc_if)->ts.type == BT_UNKNOWN | |
76e207a9 | 6684 | && !gfc_add_flavor (&(*proc_if)->attr, FL_PROCEDURE, |
60e19868 | 6685 | (*proc_if)->name, NULL)) |
87863b31 | 6686 | return MATCH_ERROR; |
af1a34ee | 6687 | } |
6688 | ||
6689 | got_ts: | |
af1a34ee | 6690 | if (gfc_match (" )") != MATCH_YES) |
6691 | { | |
6692 | gfc_current_locus = entry_loc; | |
6693 | return MATCH_NO; | |
6694 | } | |
6695 | ||
64e93293 | 6696 | return MATCH_YES; |
6697 | } | |
6698 | ||
6699 | ||
6700 | /* Match a PROCEDURE declaration (R1211). */ | |
6701 | ||
6702 | static match | |
6703 | match_procedure_decl (void) | |
6704 | { | |
6705 | match m; | |
6706 | gfc_symbol *sym, *proc_if = NULL; | |
6707 | int num; | |
6708 | gfc_expr *initializer = NULL; | |
6709 | ||
293d72e0 | 6710 | /* Parse interface (with brackets). */ |
64e93293 | 6711 | m = match_procedure_interface (&proc_if); |
6712 | if (m != MATCH_YES) | |
6713 | return m; | |
6714 | ||
6715 | /* Parse attributes (with colons). */ | |
af1a34ee | 6716 | m = match_attr_spec(); |
6717 | if (m == MATCH_ERROR) | |
6718 | return MATCH_ERROR; | |
6719 | ||
caa3ea40 | 6720 | if (proc_if && proc_if->attr.is_bind_c && !current_attr.is_bind_c) |
6721 | { | |
6722 | current_attr.is_bind_c = 1; | |
6723 | has_name_equals = 0; | |
6724 | curr_binding_label = NULL; | |
6725 | } | |
6726 | ||
af1a34ee | 6727 | /* Get procedure symbols. */ |
6728 | for(num=1;;num++) | |
6729 | { | |
af1a34ee | 6730 | m = gfc_match_symbol (&sym, 0); |
6731 | if (m == MATCH_NO) | |
6732 | goto syntax; | |
6733 | else if (m == MATCH_ERROR) | |
6734 | return m; | |
6735 | ||
6736 | /* Add current_attr to the symbol attributes. */ | |
60e19868 | 6737 | if (!gfc_copy_attr (&sym->attr, ¤t_attr, NULL)) |
af1a34ee | 6738 | return MATCH_ERROR; |
6739 | ||
6740 | if (sym->attr.is_bind_c) | |
6741 | { | |
6742 | /* Check for C1218. */ | |
6743 | if (!proc_if || !proc_if->attr.is_bind_c) | |
6744 | { | |
6745 | gfc_error ("BIND(C) attribute at %C requires " | |
6746 | "an interface with BIND(C)"); | |
6747 | return MATCH_ERROR; | |
6748 | } | |
6749 | /* Check for C1217. */ | |
6750 | if (has_name_equals && sym->attr.pointer) | |
6751 | { | |
6752 | gfc_error ("BIND(C) procedure with NAME may not have " | |
6753 | "POINTER attribute at %C"); | |
6754 | return MATCH_ERROR; | |
6755 | } | |
6756 | if (has_name_equals && sym->attr.dummy) | |
6757 | { | |
6758 | gfc_error ("Dummy procedure at %C may not have " | |
6759 | "BIND(C) attribute with NAME"); | |
6760 | return MATCH_ERROR; | |
6761 | } | |
6762 | /* Set binding label for BIND(C). */ | |
60e19868 | 6763 | if (!set_binding_label (&sym->binding_label, sym->name, num)) |
af1a34ee | 6764 | return MATCH_ERROR; |
6765 | } | |
6766 | ||
60e19868 | 6767 | if (!gfc_add_external (&sym->attr, NULL)) |
af1a34ee | 6768 | return MATCH_ERROR; |
1e057e9b | 6769 | |
60e19868 | 6770 | if (add_hidden_procptr_result (sym)) |
1e057e9b | 6771 | sym = sym->result; |
6772 | ||
60e19868 | 6773 | if (!gfc_add_proc (&sym->attr, sym->name, NULL)) |
af1a34ee | 6774 | return MATCH_ERROR; |
6775 | ||
6776 | /* Set interface. */ | |
6777 | if (proc_if != NULL) | |
f7d7a083 | 6778 | { |
13a834aa | 6779 | if (sym->ts.type != BT_UNKNOWN) |
6780 | { | |
716da296 | 6781 | gfc_error ("Procedure %qs at %L already has basic type of %s", |
13a834aa | 6782 | sym->name, &gfc_current_locus, |
6783 | gfc_basic_typename (sym->ts.type)); | |
6784 | return MATCH_ERROR; | |
6785 | } | |
2cd2bb5c | 6786 | sym->ts.interface = proc_if; |
f7d7a083 | 6787 | sym->attr.untyped = 1; |
180a5dc0 | 6788 | sym->attr.if_source = IFSRC_IFBODY; |
f7d7a083 | 6789 | } |
af1a34ee | 6790 | else if (current_ts.type != BT_UNKNOWN) |
6791 | { | |
60e19868 | 6792 | if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
13a834aa | 6793 | return MATCH_ERROR; |
2cd2bb5c | 6794 | sym->ts.interface = gfc_new_symbol ("", gfc_current_ns); |
6795 | sym->ts.interface->ts = current_ts; | |
ce80bc5b | 6796 | sym->ts.interface->attr.flavor = FL_PROCEDURE; |
2cd2bb5c | 6797 | sym->ts.interface->attr.function = 1; |
ce80bc5b | 6798 | sym->attr.function = 1; |
180a5dc0 | 6799 | sym->attr.if_source = IFSRC_UNKNOWN; |
af1a34ee | 6800 | } |
6801 | ||
cad0ddcf | 6802 | if (gfc_match (" =>") == MATCH_YES) |
6803 | { | |
6804 | if (!current_attr.pointer) | |
6805 | { | |
6806 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
6807 | m = MATCH_ERROR; | |
6808 | goto cleanup; | |
6809 | } | |
6810 | ||
23d075f4 | 6811 | m = match_pointer_init (&initializer, 1); |
cad0ddcf | 6812 | if (m != MATCH_YES) |
6813 | goto cleanup; | |
6814 | ||
60e19868 | 6815 | if (!add_init_expr_to_sym (sym->name, &initializer, &gfc_current_locus)) |
cad0ddcf | 6816 | goto cleanup; |
6817 | ||
6818 | } | |
6819 | ||
af1a34ee | 6820 | if (gfc_match_eos () == MATCH_YES) |
6821 | return MATCH_YES; | |
6822 | if (gfc_match_char (',') != MATCH_YES) | |
6823 | goto syntax; | |
6824 | } | |
6825 | ||
6826 | syntax: | |
6827 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
6828 | return MATCH_ERROR; | |
cad0ddcf | 6829 | |
6830 | cleanup: | |
6831 | /* Free stuff up and return. */ | |
6832 | gfc_free_expr (initializer); | |
6833 | return m; | |
af1a34ee | 6834 | } |
6835 | ||
6836 | ||
64e93293 | 6837 | static match |
6838 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc); | |
6839 | ||
6840 | ||
6841 | /* Match a procedure pointer component declaration (R445). */ | |
6842 | ||
6843 | static match | |
6844 | match_ppc_decl (void) | |
6845 | { | |
6846 | match m; | |
6847 | gfc_symbol *proc_if = NULL; | |
6848 | gfc_typespec ts; | |
6849 | int num; | |
6850 | gfc_component *c; | |
6851 | gfc_expr *initializer = NULL; | |
6852 | gfc_typebound_proc* tb; | |
6853 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6854 | ||
6855 | /* Parse interface (with brackets). */ | |
6856 | m = match_procedure_interface (&proc_if); | |
6857 | if (m != MATCH_YES) | |
6858 | goto syntax; | |
6859 | ||
6860 | /* Parse attributes. */ | |
6861 | tb = XCNEW (gfc_typebound_proc); | |
6862 | tb->where = gfc_current_locus; | |
6863 | m = match_binding_attributes (tb, false, true); | |
6864 | if (m == MATCH_ERROR) | |
6865 | return m; | |
6866 | ||
64e93293 | 6867 | gfc_clear_attr (¤t_attr); |
6868 | current_attr.procedure = 1; | |
6869 | current_attr.proc_pointer = 1; | |
6870 | current_attr.access = tb->access; | |
6871 | current_attr.flavor = FL_PROCEDURE; | |
6872 | ||
6873 | /* Match the colons (required). */ | |
6874 | if (gfc_match (" ::") != MATCH_YES) | |
6875 | { | |
0d2b3c9c | 6876 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
64e93293 | 6877 | return MATCH_ERROR; |
6878 | } | |
6879 | ||
6880 | /* Check for C450. */ | |
6881 | if (!tb->nopass && proc_if == NULL) | |
6882 | { | |
6883 | gfc_error("NOPASS or explicit interface required at %C"); | |
6884 | return MATCH_ERROR; | |
6885 | } | |
6886 | ||
60e19868 | 6887 | if (!gfc_notify_std (GFC_STD_F2003, "Procedure pointer component at %C")) |
8a026279 | 6888 | return MATCH_ERROR; |
6889 | ||
64e93293 | 6890 | /* Match PPC names. */ |
6891 | ts = current_ts; | |
6892 | for(num=1;;num++) | |
6893 | { | |
6894 | m = gfc_match_name (name); | |
6895 | if (m == MATCH_NO) | |
6896 | goto syntax; | |
6897 | else if (m == MATCH_ERROR) | |
6898 | return m; | |
6899 | ||
60e19868 | 6900 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
64e93293 | 6901 | return MATCH_ERROR; |
6902 | ||
6903 | /* Add current_attr to the symbol attributes. */ | |
60e19868 | 6904 | if (!gfc_copy_attr (&c->attr, ¤t_attr, NULL)) |
64e93293 | 6905 | return MATCH_ERROR; |
6906 | ||
60e19868 | 6907 | if (!gfc_add_external (&c->attr, NULL)) |
64e93293 | 6908 | return MATCH_ERROR; |
6909 | ||
60e19868 | 6910 | if (!gfc_add_proc (&c->attr, name, NULL)) |
64e93293 | 6911 | return MATCH_ERROR; |
6912 | ||
99014f81 | 6913 | if (num == 1) |
6914 | c->tb = tb; | |
6915 | else | |
6916 | { | |
6917 | c->tb = XCNEW (gfc_typebound_proc); | |
6918 | c->tb->where = gfc_current_locus; | |
6919 | *c->tb = *tb; | |
6920 | } | |
fe9b08a2 | 6921 | |
64e93293 | 6922 | /* Set interface. */ |
6923 | if (proc_if != NULL) | |
6924 | { | |
6925 | c->ts.interface = proc_if; | |
6926 | c->attr.untyped = 1; | |
6927 | c->attr.if_source = IFSRC_IFBODY; | |
6928 | } | |
6929 | else if (ts.type != BT_UNKNOWN) | |
6930 | { | |
6931 | c->ts = ts; | |
6932 | c->ts.interface = gfc_new_symbol ("", gfc_current_ns); | |
a63bcd97 | 6933 | c->ts.interface->result = c->ts.interface; |
64e93293 | 6934 | c->ts.interface->ts = ts; |
ce80bc5b | 6935 | c->ts.interface->attr.flavor = FL_PROCEDURE; |
64e93293 | 6936 | c->ts.interface->attr.function = 1; |
ce80bc5b | 6937 | c->attr.function = 1; |
64e93293 | 6938 | c->attr.if_source = IFSRC_UNKNOWN; |
6939 | } | |
6940 | ||
6941 | if (gfc_match (" =>") == MATCH_YES) | |
6942 | { | |
23d075f4 | 6943 | m = match_pointer_init (&initializer, 1); |
64e93293 | 6944 | if (m != MATCH_YES) |
6945 | { | |
6946 | gfc_free_expr (initializer); | |
6947 | return m; | |
6948 | } | |
6949 | c->initializer = initializer; | |
6950 | } | |
6951 | ||
6952 | if (gfc_match_eos () == MATCH_YES) | |
6953 | return MATCH_YES; | |
6954 | if (gfc_match_char (',') != MATCH_YES) | |
6955 | goto syntax; | |
6956 | } | |
6957 | ||
6958 | syntax: | |
6959 | gfc_error ("Syntax error in procedure pointer component at %C"); | |
6960 | return MATCH_ERROR; | |
6961 | } | |
6962 | ||
6963 | ||
af1a34ee | 6964 | /* Match a PROCEDURE declaration inside an interface (R1206). */ |
6965 | ||
6966 | static match | |
6967 | match_procedure_in_interface (void) | |
6968 | { | |
6969 | match m; | |
6970 | gfc_symbol *sym; | |
6971 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
2b0f5dc8 | 6972 | locus old_locus; |
af1a34ee | 6973 | |
6974 | if (current_interface.type == INTERFACE_NAMELESS | |
6975 | || current_interface.type == INTERFACE_ABSTRACT) | |
6976 | { | |
6977 | gfc_error ("PROCEDURE at %C must be in a generic interface"); | |
6978 | return MATCH_ERROR; | |
6979 | } | |
6980 | ||
2b0f5dc8 | 6981 | /* Check if the F2008 optional double colon appears. */ |
6982 | gfc_gobble_whitespace (); | |
6983 | old_locus = gfc_current_locus; | |
6984 | if (gfc_match ("::") == MATCH_YES) | |
6985 | { | |
60e19868 | 6986 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
6987 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
2b0f5dc8 | 6988 | return MATCH_ERROR; |
6989 | } | |
6990 | else | |
6991 | gfc_current_locus = old_locus; | |
6992 | ||
af1a34ee | 6993 | for(;;) |
6994 | { | |
6995 | m = gfc_match_name (name); | |
6996 | if (m == MATCH_NO) | |
6997 | goto syntax; | |
6998 | else if (m == MATCH_ERROR) | |
6999 | return m; | |
7000 | if (gfc_get_symbol (name, gfc_current_ns->parent, &sym)) | |
7001 | return MATCH_ERROR; | |
7002 | ||
60e19868 | 7003 | if (!gfc_add_interface (sym)) |
af1a34ee | 7004 | return MATCH_ERROR; |
7005 | ||
af1a34ee | 7006 | if (gfc_match_eos () == MATCH_YES) |
7007 | break; | |
7008 | if (gfc_match_char (',') != MATCH_YES) | |
7009 | goto syntax; | |
7010 | } | |
7011 | ||
7012 | return MATCH_YES; | |
7013 | ||
7014 | syntax: | |
7015 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
7016 | return MATCH_ERROR; | |
7017 | } | |
7018 | ||
7019 | ||
7020 | /* General matcher for PROCEDURE declarations. */ | |
7021 | ||
7fd88f6e | 7022 | static match match_procedure_in_type (void); |
7023 | ||
af1a34ee | 7024 | match |
7025 | gfc_match_procedure (void) | |
7026 | { | |
7027 | match m; | |
7028 | ||
7029 | switch (gfc_current_state ()) | |
7030 | { | |
7031 | case COMP_NONE: | |
7032 | case COMP_PROGRAM: | |
7033 | case COMP_MODULE: | |
4b8eb6ca | 7034 | case COMP_SUBMODULE: |
af1a34ee | 7035 | case COMP_SUBROUTINE: |
7036 | case COMP_FUNCTION: | |
0b342e60 | 7037 | case COMP_BLOCK: |
af1a34ee | 7038 | m = match_procedure_decl (); |
7039 | break; | |
7040 | case COMP_INTERFACE: | |
7041 | m = match_procedure_in_interface (); | |
7042 | break; | |
7043 | case COMP_DERIVED: | |
64e93293 | 7044 | m = match_ppc_decl (); |
7045 | break; | |
7fd88f6e | 7046 | case COMP_DERIVED_CONTAINS: |
7047 | m = match_procedure_in_type (); | |
7048 | break; | |
af1a34ee | 7049 | default: |
7050 | return MATCH_NO; | |
7051 | } | |
7052 | ||
7053 | if (m != MATCH_YES) | |
7054 | return m; | |
7055 | ||
60e19868 | 7056 | if (!gfc_notify_std (GFC_STD_F2003, "PROCEDURE statement at %C")) |
af1a34ee | 7057 | return MATCH_ERROR; |
7058 | ||
7059 | return m; | |
7060 | } | |
7061 | ||
7062 | ||
a34926ba | 7063 | /* Warn if a matched procedure has the same name as an intrinsic; this is |
7064 | simply a wrapper around gfc_warn_intrinsic_shadow that interprets the current | |
7065 | parser-state-stack to find out whether we're in a module. */ | |
7066 | ||
7067 | static void | |
8290d53f | 7068 | do_warn_intrinsic_shadow (const gfc_symbol* sym, bool func) |
a34926ba | 7069 | { |
7070 | bool in_module; | |
7071 | ||
7072 | in_module = (gfc_state_stack->previous | |
4b8eb6ca | 7073 | && (gfc_state_stack->previous->state == COMP_MODULE |
7074 | || gfc_state_stack->previous->state == COMP_SUBMODULE)); | |
a34926ba | 7075 | |
7076 | gfc_warn_intrinsic_shadow (sym, in_module, func); | |
7077 | } | |
7078 | ||
7079 | ||
4ee9c684 | 7080 | /* Match a function declaration. */ |
7081 | ||
7082 | match | |
7083 | gfc_match_function_decl (void) | |
7084 | { | |
7085 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7086 | gfc_symbol *sym, *result; | |
7087 | locus old_loc; | |
7088 | match m; | |
c5d33754 | 7089 | match suffix_match; |
8db94b3b | 7090 | match found_match; /* Status returned by match func. */ |
4ee9c684 | 7091 | |
7092 | if (gfc_current_state () != COMP_NONE | |
7093 | && gfc_current_state () != COMP_INTERFACE | |
7094 | && gfc_current_state () != COMP_CONTAINS) | |
7095 | return MATCH_NO; | |
7096 | ||
7097 | gfc_clear_ts (¤t_ts); | |
7098 | ||
cbb9e6aa | 7099 | old_loc = gfc_current_locus; |
4ee9c684 | 7100 | |
077932f9 | 7101 | m = gfc_match_prefix (¤t_ts); |
4ee9c684 | 7102 | if (m != MATCH_YES) |
7103 | { | |
cbb9e6aa | 7104 | gfc_current_locus = old_loc; |
4ee9c684 | 7105 | return m; |
7106 | } | |
7107 | ||
7108 | if (gfc_match ("function% %n", name) != MATCH_YES) | |
7109 | { | |
cbb9e6aa | 7110 | gfc_current_locus = old_loc; |
4ee9c684 | 7111 | return MATCH_NO; |
7112 | } | |
4b8eb6ca | 7113 | |
d77f260f | 7114 | if (get_proc_name (name, &sym, false)) |
4ee9c684 | 7115 | return MATCH_ERROR; |
1e057e9b | 7116 | |
60e19868 | 7117 | if (add_hidden_procptr_result (sym)) |
1e057e9b | 7118 | sym = sym->result; |
7119 | ||
4b8eb6ca | 7120 | if (current_attr.module_procedure) |
7121 | sym->attr.module_procedure = 1; | |
7122 | ||
4ee9c684 | 7123 | gfc_new_block = sym; |
7124 | ||
7125 | m = gfc_match_formal_arglist (sym, 0, 0); | |
7126 | if (m == MATCH_NO) | |
9b435b6d | 7127 | { |
7128 | gfc_error ("Expected formal argument list in function " | |
1a9745d2 | 7129 | "definition at %C"); |
9b435b6d | 7130 | m = MATCH_ERROR; |
7131 | goto cleanup; | |
7132 | } | |
4ee9c684 | 7133 | else if (m == MATCH_ERROR) |
7134 | goto cleanup; | |
7135 | ||
7136 | result = NULL; | |
7137 | ||
c5d33754 | 7138 | /* According to the draft, the bind(c) and result clause can |
7139 | come in either order after the formal_arg_list (i.e., either | |
7140 | can be first, both can exist together or by themselves or neither | |
7141 | one). Therefore, the match_result can't match the end of the | |
7142 | string, and check for the bind(c) or result clause in either order. */ | |
7143 | found_match = gfc_match_eos (); | |
7144 | ||
7145 | /* Make sure that it isn't already declared as BIND(C). If it is, it | |
7146 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7147 | not allowed for procedures. */ | |
7148 | if (sym->attr.is_bind_c == 1) | |
7149 | { | |
7150 | sym->attr.is_bind_c = 0; | |
7151 | if (sym->old_symbol != NULL) | |
7152 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7153 | "variables or common blocks", | |
7154 | &(sym->old_symbol->declared_at)); | |
7155 | else | |
7156 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7157 | "variables or common blocks", &gfc_current_locus); | |
4ee9c684 | 7158 | } |
7159 | ||
c5d33754 | 7160 | if (found_match != MATCH_YES) |
4ee9c684 | 7161 | { |
c5d33754 | 7162 | /* If we haven't found the end-of-statement, look for a suffix. */ |
7163 | suffix_match = gfc_match_suffix (sym, &result); | |
7164 | if (suffix_match == MATCH_YES) | |
7165 | /* Need to get the eos now. */ | |
7166 | found_match = gfc_match_eos (); | |
7167 | else | |
7168 | found_match = suffix_match; | |
4ee9c684 | 7169 | } |
7170 | ||
c5d33754 | 7171 | if(found_match != MATCH_YES) |
7172 | m = MATCH_ERROR; | |
4ee9c684 | 7173 | else |
7174 | { | |
c5d33754 | 7175 | /* Make changes to the symbol. */ |
7176 | m = MATCH_ERROR; | |
8db94b3b | 7177 | |
60e19868 | 7178 | if (!gfc_add_function (&sym->attr, sym->name, NULL)) |
c5d33754 | 7179 | goto cleanup; |
8db94b3b | 7180 | |
76e207a9 | 7181 | if (!gfc_missing_attr (&sym->attr, NULL)) |
c5d33754 | 7182 | goto cleanup; |
4ee9c684 | 7183 | |
76e207a9 | 7184 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
7185 | { | |
7186 | if(!sym->attr.module_procedure) | |
7187 | goto cleanup; | |
7188 | else | |
7189 | gfc_error_check (); | |
7190 | } | |
7191 | ||
8d39570e | 7192 | /* Delay matching the function characteristics until after the |
077932f9 | 7193 | specification block by signalling kind=-1. */ |
8d39570e | 7194 | sym->declared_at = old_loc; |
7195 | if (current_ts.type != BT_UNKNOWN) | |
7196 | current_ts.kind = -1; | |
7197 | else | |
7198 | current_ts.kind = 0; | |
077932f9 | 7199 | |
c5d33754 | 7200 | if (result == NULL) |
7201 | { | |
0477d42d | 7202 | if (current_ts.type != BT_UNKNOWN |
60e19868 | 7203 | && !gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
0477d42d | 7204 | goto cleanup; |
c5d33754 | 7205 | sym->result = sym; |
7206 | } | |
7207 | else | |
7208 | { | |
0477d42d | 7209 | if (current_ts.type != BT_UNKNOWN |
60e19868 | 7210 | && !gfc_add_type (result, ¤t_ts, &gfc_current_locus)) |
0477d42d | 7211 | goto cleanup; |
c5d33754 | 7212 | sym->result = result; |
7213 | } | |
7214 | ||
a34926ba | 7215 | /* Warn if this procedure has the same name as an intrinsic. */ |
8290d53f | 7216 | do_warn_intrinsic_shadow (sym, true); |
a34926ba | 7217 | |
c5d33754 | 7218 | return MATCH_YES; |
7219 | } | |
4ee9c684 | 7220 | |
7221 | cleanup: | |
cbb9e6aa | 7222 | gfc_current_locus = old_loc; |
4ee9c684 | 7223 | return m; |
7224 | } | |
7225 | ||
1a9745d2 | 7226 | |
7227 | /* This is mostly a copy of parse.c(add_global_procedure) but modified to | |
7228 | pass the name of the entry, rather than the gfc_current_block name, and | |
7229 | to return false upon finding an existing global entry. */ | |
858f9894 | 7230 | |
7231 | static bool | |
8d779aef | 7232 | add_global_entry (const char *name, const char *binding_label, bool sub, |
7233 | locus *where) | |
858f9894 | 7234 | { |
7235 | gfc_gsymbol *s; | |
8458f4ca | 7236 | enum gfc_symbol_type type; |
858f9894 | 7237 | |
5b11d932 | 7238 | type = sub ? GSYM_SUBROUTINE : GSYM_FUNCTION; |
858f9894 | 7239 | |
da5c730d | 7240 | /* Only in Fortran 2003: For procedures with a binding label also the Fortran |
7241 | name is a global identifier. */ | |
7242 | if (!binding_label || gfc_notification_std (GFC_STD_F2008)) | |
858f9894 | 7243 | { |
da5c730d | 7244 | s = gfc_get_gsymbol (name); |
7245 | ||
7246 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
7247 | { | |
8d779aef | 7248 | gfc_global_used (s, where); |
da5c730d | 7249 | return false; |
7250 | } | |
7251 | else | |
7252 | { | |
7253 | s->type = type; | |
c8b913ab | 7254 | s->sym_name = name; |
8d779aef | 7255 | s->where = *where; |
da5c730d | 7256 | s->defined = 1; |
7257 | s->ns = gfc_current_ns; | |
7258 | } | |
858f9894 | 7259 | } |
da5c730d | 7260 | |
7261 | /* Don't add the symbol multiple times. */ | |
7262 | if (binding_label | |
7263 | && (!gfc_notification_std (GFC_STD_F2008) | |
7264 | || strcmp (name, binding_label) != 0)) | |
7265 | { | |
7266 | s = gfc_get_gsymbol (binding_label); | |
7267 | ||
7268 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
7269 | { | |
8d779aef | 7270 | gfc_global_used (s, where); |
da5c730d | 7271 | return false; |
7272 | } | |
7273 | else | |
7274 | { | |
7275 | s->type = type; | |
c8b913ab | 7276 | s->sym_name = name; |
da5c730d | 7277 | s->binding_label = binding_label; |
8d779aef | 7278 | s->where = *where; |
da5c730d | 7279 | s->defined = 1; |
7280 | s->ns = gfc_current_ns; | |
7281 | } | |
7282 | } | |
7283 | ||
7284 | return true; | |
858f9894 | 7285 | } |
4ee9c684 | 7286 | |
1a9745d2 | 7287 | |
4ee9c684 | 7288 | /* Match an ENTRY statement. */ |
7289 | ||
7290 | match | |
7291 | gfc_match_entry (void) | |
7292 | { | |
1b716045 | 7293 | gfc_symbol *proc; |
7294 | gfc_symbol *result; | |
7295 | gfc_symbol *entry; | |
4ee9c684 | 7296 | char name[GFC_MAX_SYMBOL_LEN + 1]; |
7297 | gfc_compile_state state; | |
7298 | match m; | |
1b716045 | 7299 | gfc_entry_list *el; |
7b5e1acc | 7300 | locus old_loc; |
d77f260f | 7301 | bool module_procedure; |
86f0974b | 7302 | char peek_char; |
7303 | match is_bind_c; | |
4ee9c684 | 7304 | |
7305 | m = gfc_match_name (name); | |
7306 | if (m != MATCH_YES) | |
7307 | return m; | |
7308 | ||
60e19868 | 7309 | if (!gfc_notify_std (GFC_STD_F2008_OBS, "ENTRY statement at %C")) |
a3b81b0f | 7310 | return MATCH_ERROR; |
7311 | ||
1b716045 | 7312 | state = gfc_current_state (); |
ea37f786 | 7313 | if (state != COMP_SUBROUTINE && state != COMP_FUNCTION) |
1b716045 | 7314 | { |
ea37f786 | 7315 | switch (state) |
7316 | { | |
7317 | case COMP_PROGRAM: | |
7318 | gfc_error ("ENTRY statement at %C cannot appear within a PROGRAM"); | |
7319 | break; | |
7320 | case COMP_MODULE: | |
7321 | gfc_error ("ENTRY statement at %C cannot appear within a MODULE"); | |
7322 | break; | |
4b8eb6ca | 7323 | case COMP_SUBMODULE: |
7324 | gfc_error ("ENTRY statement at %C cannot appear within a SUBMODULE"); | |
7325 | break; | |
ea37f786 | 7326 | case COMP_BLOCK_DATA: |
1a9745d2 | 7327 | gfc_error ("ENTRY statement at %C cannot appear within " |
7328 | "a BLOCK DATA"); | |
ea37f786 | 7329 | break; |
7330 | case COMP_INTERFACE: | |
1a9745d2 | 7331 | gfc_error ("ENTRY statement at %C cannot appear within " |
7332 | "an INTERFACE"); | |
ea37f786 | 7333 | break; |
d7cd448a | 7334 | case COMP_STRUCTURE: |
7335 | gfc_error ("ENTRY statement at %C cannot appear within " | |
7336 | "a STRUCTURE block"); | |
7337 | break; | |
ea37f786 | 7338 | case COMP_DERIVED: |
1a9745d2 | 7339 | gfc_error ("ENTRY statement at %C cannot appear within " |
7340 | "a DERIVED TYPE block"); | |
ea37f786 | 7341 | break; |
7342 | case COMP_IF: | |
1a9745d2 | 7343 | gfc_error ("ENTRY statement at %C cannot appear within " |
7344 | "an IF-THEN block"); | |
ea37f786 | 7345 | break; |
7346 | case COMP_DO: | |
55ea8666 | 7347 | case COMP_DO_CONCURRENT: |
1a9745d2 | 7348 | gfc_error ("ENTRY statement at %C cannot appear within " |
7349 | "a DO block"); | |
ea37f786 | 7350 | break; |
7351 | case COMP_SELECT: | |
1a9745d2 | 7352 | gfc_error ("ENTRY statement at %C cannot appear within " |
7353 | "a SELECT block"); | |
ea37f786 | 7354 | break; |
7355 | case COMP_FORALL: | |
1a9745d2 | 7356 | gfc_error ("ENTRY statement at %C cannot appear within " |
7357 | "a FORALL block"); | |
ea37f786 | 7358 | break; |
7359 | case COMP_WHERE: | |
1a9745d2 | 7360 | gfc_error ("ENTRY statement at %C cannot appear within " |
7361 | "a WHERE block"); | |
ea37f786 | 7362 | break; |
7363 | case COMP_CONTAINS: | |
1a9745d2 | 7364 | gfc_error ("ENTRY statement at %C cannot appear within " |
7365 | "a contained subprogram"); | |
ea37f786 | 7366 | break; |
7367 | default: | |
3132dbae | 7368 | gfc_error ("Unexpected ENTRY statement at %C"); |
ea37f786 | 7369 | } |
1b716045 | 7370 | return MATCH_ERROR; |
7371 | } | |
7372 | ||
c286c294 | 7373 | if ((state == COMP_SUBROUTINE || state == COMP_FUNCTION) |
7374 | && gfc_state_stack->previous->state == COMP_INTERFACE) | |
7375 | { | |
7376 | gfc_error ("ENTRY statement at %C cannot appear within an INTERFACE"); | |
7377 | return MATCH_ERROR; | |
7378 | } | |
7379 | ||
d77f260f | 7380 | module_procedure = gfc_current_ns->parent != NULL |
1a9745d2 | 7381 | && gfc_current_ns->parent->proc_name |
7382 | && gfc_current_ns->parent->proc_name->attr.flavor | |
7383 | == FL_MODULE; | |
d77f260f | 7384 | |
1b716045 | 7385 | if (gfc_current_ns->parent != NULL |
7386 | && gfc_current_ns->parent->proc_name | |
d77f260f | 7387 | && !module_procedure) |
1b716045 | 7388 | { |
7389 | gfc_error("ENTRY statement at %C cannot appear in a " | |
7390 | "contained procedure"); | |
7391 | return MATCH_ERROR; | |
7392 | } | |
7393 | ||
d77f260f | 7394 | /* Module function entries need special care in get_proc_name |
7395 | because previous references within the function will have | |
7396 | created symbols attached to the current namespace. */ | |
7397 | if (get_proc_name (name, &entry, | |
7398 | gfc_current_ns->parent != NULL | |
c1e4695a | 7399 | && module_procedure)) |
4ee9c684 | 7400 | return MATCH_ERROR; |
7401 | ||
1b716045 | 7402 | proc = gfc_current_block (); |
7403 | ||
86f0974b | 7404 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
7405 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7406 | not allowed for procedures. */ | |
7407 | if (entry->attr.is_bind_c == 1) | |
7408 | { | |
7409 | entry->attr.is_bind_c = 0; | |
7410 | if (entry->old_symbol != NULL) | |
7411 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7412 | "variables or common blocks", | |
7413 | &(entry->old_symbol->declared_at)); | |
7414 | else | |
7415 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7416 | "variables or common blocks", &gfc_current_locus); | |
7417 | } | |
8db94b3b | 7418 | |
86f0974b | 7419 | /* Check what next non-whitespace character is so we can tell if there |
7420 | is the required parens if we have a BIND(C). */ | |
8d779aef | 7421 | old_loc = gfc_current_locus; |
86f0974b | 7422 | gfc_gobble_whitespace (); |
e0be6f02 | 7423 | peek_char = gfc_peek_ascii_char (); |
86f0974b | 7424 | |
1b716045 | 7425 | if (state == COMP_SUBROUTINE) |
4ee9c684 | 7426 | { |
4ee9c684 | 7427 | m = gfc_match_formal_arglist (entry, 0, 1); |
7428 | if (m != MATCH_YES) | |
7429 | return MATCH_ERROR; | |
7430 | ||
75ae7f6c | 7431 | /* Call gfc_match_bind_c with allow_binding_name = true as ENTRY can |
7432 | never be an internal procedure. */ | |
7433 | is_bind_c = gfc_match_bind_c (entry, true); | |
86f0974b | 7434 | if (is_bind_c == MATCH_ERROR) |
7435 | return MATCH_ERROR; | |
7436 | if (is_bind_c == MATCH_YES) | |
7437 | { | |
7438 | if (peek_char != '(') | |
7439 | { | |
7440 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
7441 | return MATCH_ERROR; | |
7442 | } | |
0e8475b7 | 7443 | |
7444 | if (!gfc_add_is_bind_c (&(entry->attr), entry->name, | |
7445 | &(entry->declared_at), 1)) | |
7446 | return MATCH_ERROR; | |
7447 | ||
86f0974b | 7448 | } |
7449 | ||
da5c730d | 7450 | if (!gfc_current_ns->parent |
8d779aef | 7451 | && !add_global_entry (name, entry->binding_label, true, |
7452 | &old_loc)) | |
da5c730d | 7453 | return MATCH_ERROR; |
7454 | ||
7455 | /* An entry in a subroutine. */ | |
60e19868 | 7456 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7457 | || !gfc_add_subroutine (&entry->attr, entry->name, NULL)) | |
4ee9c684 | 7458 | return MATCH_ERROR; |
1b716045 | 7459 | } |
7460 | else | |
7461 | { | |
7b5e1acc | 7462 | /* An entry in a function. |
1a9745d2 | 7463 | We need to take special care because writing |
7464 | ENTRY f() | |
7465 | as | |
7466 | ENTRY f | |
7467 | is allowed, whereas | |
7468 | ENTRY f() RESULT (r) | |
7469 | can't be written as | |
7470 | ENTRY f RESULT (r). */ | |
7b5e1acc | 7471 | if (gfc_match_eos () == MATCH_YES) |
7472 | { | |
7473 | gfc_current_locus = old_loc; | |
7474 | /* Match the empty argument list, and add the interface to | |
7475 | the symbol. */ | |
7476 | m = gfc_match_formal_arglist (entry, 0, 1); | |
7477 | } | |
7478 | else | |
7479 | m = gfc_match_formal_arglist (entry, 0, 0); | |
7480 | ||
4ee9c684 | 7481 | if (m != MATCH_YES) |
7482 | return MATCH_ERROR; | |
7483 | ||
4ee9c684 | 7484 | result = NULL; |
7485 | ||
7486 | if (gfc_match_eos () == MATCH_YES) | |
7487 | { | |
60e19868 | 7488 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7489 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
4ee9c684 | 7490 | return MATCH_ERROR; |
7491 | ||
c6871095 | 7492 | entry->result = entry; |
4ee9c684 | 7493 | } |
7494 | else | |
7495 | { | |
86f0974b | 7496 | m = gfc_match_suffix (entry, &result); |
4ee9c684 | 7497 | if (m == MATCH_NO) |
7498 | gfc_syntax_error (ST_ENTRY); | |
7499 | if (m != MATCH_YES) | |
7500 | return MATCH_ERROR; | |
7501 | ||
86f0974b | 7502 | if (result) |
7503 | { | |
60e19868 | 7504 | if (!gfc_add_result (&result->attr, result->name, NULL) |
7505 | || !gfc_add_entry (&entry->attr, result->name, NULL) | |
7506 | || !gfc_add_function (&entry->attr, result->name, NULL)) | |
86f0974b | 7507 | return MATCH_ERROR; |
7508 | entry->result = result; | |
7509 | } | |
7510 | else | |
7511 | { | |
60e19868 | 7512 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7513 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
86f0974b | 7514 | return MATCH_ERROR; |
7515 | entry->result = entry; | |
7516 | } | |
4ee9c684 | 7517 | } |
da5c730d | 7518 | |
7519 | if (!gfc_current_ns->parent | |
8d779aef | 7520 | && !add_global_entry (name, entry->binding_label, false, |
7521 | &old_loc)) | |
da5c730d | 7522 | return MATCH_ERROR; |
4ee9c684 | 7523 | } |
7524 | ||
7525 | if (gfc_match_eos () != MATCH_YES) | |
7526 | { | |
7527 | gfc_syntax_error (ST_ENTRY); | |
7528 | return MATCH_ERROR; | |
7529 | } | |
7530 | ||
0e8475b7 | 7531 | /* F2018:C1546 An elemental procedure shall not have the BIND attribute. */ |
7532 | if (proc->attr.elemental && entry->attr.is_bind_c) | |
7533 | { | |
7534 | gfc_error ("ENTRY statement at %L with BIND(C) prohibited in an " | |
7535 | "elemental procedure", &entry->declared_at); | |
7536 | return MATCH_ERROR; | |
7537 | } | |
7538 | ||
1b716045 | 7539 | entry->attr.recursive = proc->attr.recursive; |
7540 | entry->attr.elemental = proc->attr.elemental; | |
7541 | entry->attr.pure = proc->attr.pure; | |
4ee9c684 | 7542 | |
1b716045 | 7543 | el = gfc_get_entry_list (); |
7544 | el->sym = entry; | |
7545 | el->next = gfc_current_ns->entries; | |
7546 | gfc_current_ns->entries = el; | |
7547 | if (el->next) | |
7548 | el->id = el->next->id + 1; | |
7549 | else | |
7550 | el->id = 1; | |
4ee9c684 | 7551 | |
1b716045 | 7552 | new_st.op = EXEC_ENTRY; |
7553 | new_st.ext.entry = el; | |
7554 | ||
7555 | return MATCH_YES; | |
4ee9c684 | 7556 | } |
7557 | ||
7558 | ||
7559 | /* Match a subroutine statement, including optional prefixes. */ | |
7560 | ||
7561 | match | |
7562 | gfc_match_subroutine (void) | |
7563 | { | |
7564 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7565 | gfc_symbol *sym; | |
7566 | match m; | |
c5d33754 | 7567 | match is_bind_c; |
7568 | char peek_char; | |
75ae7f6c | 7569 | bool allow_binding_name; |
2ae44fa6 | 7570 | locus loc; |
4ee9c684 | 7571 | |
7572 | if (gfc_current_state () != COMP_NONE | |
7573 | && gfc_current_state () != COMP_INTERFACE | |
7574 | && gfc_current_state () != COMP_CONTAINS) | |
7575 | return MATCH_NO; | |
7576 | ||
077932f9 | 7577 | m = gfc_match_prefix (NULL); |
4ee9c684 | 7578 | if (m != MATCH_YES) |
7579 | return m; | |
7580 | ||
7581 | m = gfc_match ("subroutine% %n", name); | |
7582 | if (m != MATCH_YES) | |
7583 | return m; | |
7584 | ||
d77f260f | 7585 | if (get_proc_name (name, &sym, false)) |
4ee9c684 | 7586 | return MATCH_ERROR; |
1e057e9b | 7587 | |
22c1d301 | 7588 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if |
293d72e0 | 7589 | the symbol existed before. */ |
22c1d301 | 7590 | sym->declared_at = gfc_current_locus; |
7591 | ||
4b8eb6ca | 7592 | if (current_attr.module_procedure) |
7593 | sym->attr.module_procedure = 1; | |
7594 | ||
60e19868 | 7595 | if (add_hidden_procptr_result (sym)) |
1e057e9b | 7596 | sym = sym->result; |
7597 | ||
4ee9c684 | 7598 | gfc_new_block = sym; |
7599 | ||
c5d33754 | 7600 | /* Check what next non-whitespace character is so we can tell if there |
86f0974b | 7601 | is the required parens if we have a BIND(C). */ |
c5d33754 | 7602 | gfc_gobble_whitespace (); |
e0be6f02 | 7603 | peek_char = gfc_peek_ascii_char (); |
8db94b3b | 7604 | |
60e19868 | 7605 | if (!gfc_add_subroutine (&sym->attr, sym->name, NULL)) |
4ee9c684 | 7606 | return MATCH_ERROR; |
7607 | ||
7608 | if (gfc_match_formal_arglist (sym, 0, 1) != MATCH_YES) | |
7609 | return MATCH_ERROR; | |
7610 | ||
c5d33754 | 7611 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
7612 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7613 | not allowed for procedures. */ | |
7614 | if (sym->attr.is_bind_c == 1) | |
7615 | { | |
7616 | sym->attr.is_bind_c = 0; | |
7617 | if (sym->old_symbol != NULL) | |
7618 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7619 | "variables or common blocks", | |
7620 | &(sym->old_symbol->declared_at)); | |
7621 | else | |
7622 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7623 | "variables or common blocks", &gfc_current_locus); | |
7624 | } | |
75ae7f6c | 7625 | |
7626 | /* C binding names are not allowed for internal procedures. */ | |
7627 | if (gfc_current_state () == COMP_CONTAINS | |
7628 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
7629 | allow_binding_name = false; | |
7630 | else | |
7631 | allow_binding_name = true; | |
7632 | ||
c5d33754 | 7633 | /* Here, we are just checking if it has the bind(c) attribute, and if |
7634 | so, then we need to make sure it's all correct. If it doesn't, | |
7635 | we still need to continue matching the rest of the subroutine line. */ | |
2ae44fa6 | 7636 | gfc_gobble_whitespace (); |
7637 | loc = gfc_current_locus; | |
75ae7f6c | 7638 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
c5d33754 | 7639 | if (is_bind_c == MATCH_ERROR) |
7640 | { | |
7641 | /* There was an attempt at the bind(c), but it was wrong. An | |
7642 | error message should have been printed w/in the gfc_match_bind_c | |
7643 | so here we'll just return the MATCH_ERROR. */ | |
7644 | return MATCH_ERROR; | |
7645 | } | |
7646 | ||
7647 | if (is_bind_c == MATCH_YES) | |
7648 | { | |
2ae44fa6 | 7649 | gfc_formal_arglist *arg; |
7650 | ||
75ae7f6c | 7651 | /* The following is allowed in the Fortran 2008 draft. */ |
4518e961 | 7652 | if (gfc_current_state () == COMP_CONTAINS |
75ae7f6c | 7653 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
60e19868 | 7654 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
7655 | "at %L may not be specified for an internal " | |
7656 | "procedure", &gfc_current_locus)) | |
75ae7f6c | 7657 | return MATCH_ERROR; |
7658 | ||
c5d33754 | 7659 | if (peek_char != '(') |
7660 | { | |
7661 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
7662 | return MATCH_ERROR; | |
7663 | } | |
2ae44fa6 | 7664 | |
7665 | /* Scan the dummy arguments for an alternate return. */ | |
7666 | for (arg = sym->formal; arg; arg = arg->next) | |
7667 | if (!arg->sym) | |
7668 | { | |
7669 | gfc_error ("Alternate return dummy argument cannot appear in a " | |
7670 | "SUBROUTINE with the BIND(C) attribute at %L", &loc); | |
7671 | return MATCH_ERROR; | |
7672 | } | |
7673 | ||
7674 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, &(sym->declared_at), 1)) | |
c5d33754 | 7675 | return MATCH_ERROR; |
7676 | } | |
8db94b3b | 7677 | |
4ee9c684 | 7678 | if (gfc_match_eos () != MATCH_YES) |
7679 | { | |
7680 | gfc_syntax_error (ST_SUBROUTINE); | |
7681 | return MATCH_ERROR; | |
7682 | } | |
7683 | ||
60e19868 | 7684 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
76e207a9 | 7685 | { |
7686 | if(!sym->attr.module_procedure) | |
7687 | return MATCH_ERROR; | |
7688 | else | |
7689 | gfc_error_check (); | |
7690 | } | |
4ee9c684 | 7691 | |
a34926ba | 7692 | /* Warn if it has the same name as an intrinsic. */ |
8290d53f | 7693 | do_warn_intrinsic_shadow (sym, false); |
a34926ba | 7694 | |
4ee9c684 | 7695 | return MATCH_YES; |
7696 | } | |
7697 | ||
7698 | ||
7136063b | 7699 | /* Check that the NAME identifier in a BIND attribute or statement |
7700 | is conform to C identifier rules. */ | |
7701 | ||
7702 | match | |
7703 | check_bind_name_identifier (char **name) | |
7704 | { | |
7705 | char *n = *name, *p; | |
7706 | ||
7707 | /* Remove leading spaces. */ | |
7708 | while (*n == ' ') | |
7709 | n++; | |
7710 | ||
7711 | /* On an empty string, free memory and set name to NULL. */ | |
7712 | if (*n == '\0') | |
7713 | { | |
7714 | free (*name); | |
7715 | *name = NULL; | |
7716 | return MATCH_YES; | |
7717 | } | |
7718 | ||
7719 | /* Remove trailing spaces. */ | |
7720 | p = n + strlen(n) - 1; | |
7721 | while (*p == ' ') | |
7722 | *(p--) = '\0'; | |
7723 | ||
7724 | /* Insert the identifier into the symbol table. */ | |
7725 | p = xstrdup (n); | |
7726 | free (*name); | |
7727 | *name = p; | |
7728 | ||
7729 | /* Now check that identifier is valid under C rules. */ | |
7730 | if (ISDIGIT (*p)) | |
7731 | { | |
7732 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
7733 | return MATCH_ERROR; | |
7734 | } | |
7735 | ||
7736 | for (; *p; p++) | |
7737 | if (!(ISALNUM (*p) || *p == '_' || *p == '$')) | |
7738 | { | |
7739 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
7740 | return MATCH_ERROR; | |
7741 | } | |
7742 | ||
7743 | return MATCH_YES; | |
7744 | } | |
7745 | ||
7746 | ||
c5d33754 | 7747 | /* Match a BIND(C) specifier, with the optional 'name=' specifier if |
7748 | given, and set the binding label in either the given symbol (if not | |
a0527218 | 7749 | NULL), or in the current_ts. The symbol may be NULL because we may |
c5d33754 | 7750 | encounter the BIND(C) before the declaration itself. Return |
7751 | MATCH_NO if what we're looking at isn't a BIND(C) specifier, | |
7752 | MATCH_ERROR if it is a BIND(C) clause but an error was encountered, | |
7753 | or MATCH_YES if the specifier was correct and the binding label and | |
7754 | bind(c) fields were set correctly for the given symbol or the | |
75ae7f6c | 7755 | current_ts. If allow_binding_name is false, no binding name may be |
7756 | given. */ | |
c5d33754 | 7757 | |
7758 | match | |
75ae7f6c | 7759 | gfc_match_bind_c (gfc_symbol *sym, bool allow_binding_name) |
c5d33754 | 7760 | { |
7136063b | 7761 | char *binding_label = NULL; |
7762 | gfc_expr *e = NULL; | |
c5d33754 | 7763 | |
8db94b3b | 7764 | /* Initialize the flag that specifies whether we encountered a NAME= |
c5d33754 | 7765 | specifier or not. */ |
7766 | has_name_equals = 0; | |
7767 | ||
c5d33754 | 7768 | /* This much we have to be able to match, in this order, if |
7769 | there is a bind(c) label. */ | |
7770 | if (gfc_match (" bind ( c ") != MATCH_YES) | |
7771 | return MATCH_NO; | |
7772 | ||
7773 | /* Now see if there is a binding label, or if we've reached the | |
7774 | end of the bind(c) attribute without one. */ | |
7775 | if (gfc_match_char (',') == MATCH_YES) | |
7776 | { | |
7777 | if (gfc_match (" name = ") != MATCH_YES) | |
7778 | { | |
7779 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
7780 | "at %C"); | |
7781 | /* should give an error message here */ | |
7782 | return MATCH_ERROR; | |
7783 | } | |
7784 | ||
7785 | has_name_equals = 1; | |
7786 | ||
7136063b | 7787 | if (gfc_match_init_expr (&e) != MATCH_YES) |
7788 | { | |
7789 | gfc_free_expr (e); | |
7790 | return MATCH_ERROR; | |
7791 | } | |
8db94b3b | 7792 | |
7136063b | 7793 | if (!gfc_simplify_expr(e, 0)) |
c5d33754 | 7794 | { |
7136063b | 7795 | gfc_error ("NAME= specifier at %C should be a constant expression"); |
7796 | gfc_free_expr (e); | |
7797 | return MATCH_ERROR; | |
c5d33754 | 7798 | } |
7136063b | 7799 | |
7800 | if (e->expr_type != EXPR_CONSTANT || e->ts.type != BT_CHARACTER | |
7801 | || e->ts.kind != gfc_default_character_kind || e->rank != 0) | |
c5d33754 | 7802 | { |
7136063b | 7803 | gfc_error ("NAME= specifier at %C should be a scalar of " |
7804 | "default character kind"); | |
7805 | gfc_free_expr(e); | |
7806 | return MATCH_ERROR; | |
c5d33754 | 7807 | } |
7136063b | 7808 | |
7809 | // Get a C string from the Fortran string constant | |
7810 | binding_label = gfc_widechar_to_char (e->value.character.string, | |
7811 | e->value.character.length); | |
7812 | gfc_free_expr(e); | |
7813 | ||
7814 | // Check that it is valid (old gfc_match_name_C) | |
7815 | if (check_bind_name_identifier (&binding_label) != MATCH_YES) | |
7816 | return MATCH_ERROR; | |
7817 | } | |
c5d33754 | 7818 | |
7819 | /* Get the required right paren. */ | |
7820 | if (gfc_match_char (')') != MATCH_YES) | |
7821 | { | |
7822 | gfc_error ("Missing closing paren for binding label at %C"); | |
7823 | return MATCH_ERROR; | |
7824 | } | |
7825 | ||
75ae7f6c | 7826 | if (has_name_equals && !allow_binding_name) |
7827 | { | |
7828 | gfc_error ("No binding name is allowed in BIND(C) at %C"); | |
7829 | return MATCH_ERROR; | |
7830 | } | |
7831 | ||
7832 | if (has_name_equals && sym != NULL && sym->attr.dummy) | |
7833 | { | |
7834 | gfc_error ("For dummy procedure %s, no binding name is " | |
7835 | "allowed in BIND(C) at %C", sym->name); | |
7836 | return MATCH_ERROR; | |
7837 | } | |
7838 | ||
7839 | ||
c5d33754 | 7840 | /* Save the binding label to the symbol. If sym is null, we're |
7841 | probably matching the typespec attributes of a declaration and | |
7842 | haven't gotten the name yet, and therefore, no symbol yet. */ | |
7b2060ba | 7843 | if (binding_label) |
c5d33754 | 7844 | { |
7845 | if (sym != NULL) | |
7b2060ba | 7846 | sym->binding_label = binding_label; |
c5d33754 | 7847 | else |
7b2060ba | 7848 | curr_binding_label = binding_label; |
c5d33754 | 7849 | } |
75ae7f6c | 7850 | else if (allow_binding_name) |
c5d33754 | 7851 | { |
7852 | /* No binding label, but if symbol isn't null, we | |
75ae7f6c | 7853 | can set the label for it here. |
7854 | If name="" or allow_binding_name is false, no C binding name is | |
293d72e0 | 7855 | created. */ |
c5d33754 | 7856 | if (sym != NULL && sym->name != NULL && has_name_equals == 0) |
7b2060ba | 7857 | sym->binding_label = IDENTIFIER_POINTER (get_identifier (sym->name)); |
c5d33754 | 7858 | } |
94fa7146 | 7859 | |
5cf92482 | 7860 | if (has_name_equals && gfc_current_state () == COMP_INTERFACE |
7861 | && current_interface.type == INTERFACE_ABSTRACT) | |
94fa7146 | 7862 | { |
7863 | gfc_error ("NAME not allowed on BIND(C) for ABSTRACT INTERFACE at %C"); | |
7864 | return MATCH_ERROR; | |
7865 | } | |
7866 | ||
c5d33754 | 7867 | return MATCH_YES; |
7868 | } | |
7869 | ||
7870 | ||
231e961a | 7871 | /* Return nonzero if we're currently compiling a contained procedure. */ |
c0985832 | 7872 | |
7873 | static int | |
7874 | contained_procedure (void) | |
7875 | { | |
1c343287 | 7876 | gfc_state_data *s = gfc_state_stack; |
c0985832 | 7877 | |
1c343287 | 7878 | if ((s->state == COMP_SUBROUTINE || s->state == COMP_FUNCTION) |
7879 | && s->previous != NULL && s->previous->state == COMP_CONTAINS) | |
7880 | return 1; | |
c0985832 | 7881 | |
7882 | return 0; | |
7883 | } | |
7884 | ||
e14bee04 | 7885 | /* Set the kind of each enumerator. The kind is selected such that it is |
3b6a4b41 | 7886 | interoperable with the corresponding C enumeration type, making |
7887 | sure that -fshort-enums is honored. */ | |
7888 | ||
7889 | static void | |
7890 | set_enum_kind(void) | |
7891 | { | |
7892 | enumerator_history *current_history = NULL; | |
7893 | int kind; | |
7894 | int i; | |
7895 | ||
7896 | if (max_enum == NULL || enum_history == NULL) | |
7897 | return; | |
7898 | ||
6f092e31 | 7899 | if (!flag_short_enums) |
e14bee04 | 7900 | return; |
7901 | ||
3b6a4b41 | 7902 | i = 0; |
7903 | do | |
7904 | { | |
7905 | kind = gfc_integer_kinds[i++].kind; | |
7906 | } | |
e14bee04 | 7907 | while (kind < gfc_c_int_kind |
3b6a4b41 | 7908 | && gfc_check_integer_range (max_enum->initializer->value.integer, |
7909 | kind) != ARITH_OK); | |
7910 | ||
7911 | current_history = enum_history; | |
7912 | while (current_history != NULL) | |
7913 | { | |
7914 | current_history->sym->ts.kind = kind; | |
7915 | current_history = current_history->next; | |
7916 | } | |
7917 | } | |
7918 | ||
1a9745d2 | 7919 | |
4ee9c684 | 7920 | /* Match any of the various end-block statements. Returns the type of |
6a7084d7 | 7921 | END to the caller. The END INTERFACE, END IF, END DO, END SELECT |
7922 | and END BLOCK statements cannot be replaced by a single END statement. */ | |
4ee9c684 | 7923 | |
7924 | match | |
1a9745d2 | 7925 | gfc_match_end (gfc_statement *st) |
4ee9c684 | 7926 | { |
7927 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7928 | gfc_compile_state state; | |
7929 | locus old_loc; | |
7930 | const char *block_name; | |
7931 | const char *target; | |
c0985832 | 7932 | int eos_ok; |
4ee9c684 | 7933 | match m; |
9e5e87d9 | 7934 | gfc_namespace *parent_ns, *ns, *prev_ns; |
7935 | gfc_namespace **nsp; | |
6ade726e | 7936 | bool abreviated_modproc_decl = false; |
cc7124a6 | 7937 | bool got_matching_end = false; |
4ee9c684 | 7938 | |
cbb9e6aa | 7939 | old_loc = gfc_current_locus; |
4ee9c684 | 7940 | if (gfc_match ("end") != MATCH_YES) |
7941 | return MATCH_NO; | |
7942 | ||
7943 | state = gfc_current_state (); | |
1a9745d2 | 7944 | block_name = gfc_current_block () == NULL |
7945 | ? NULL : gfc_current_block ()->name; | |
4ee9c684 | 7946 | |
d18a512a | 7947 | switch (state) |
4ee9c684 | 7948 | { |
d18a512a | 7949 | case COMP_ASSOCIATE: |
7950 | case COMP_BLOCK: | |
ea9e8242 | 7951 | if (gfc_str_startswith (block_name, "block@")) |
d18a512a | 7952 | block_name = NULL; |
7953 | break; | |
7954 | ||
7955 | case COMP_CONTAINS: | |
7956 | case COMP_DERIVED_CONTAINS: | |
4ee9c684 | 7957 | state = gfc_state_stack->previous->state; |
1a9745d2 | 7958 | block_name = gfc_state_stack->previous->sym == NULL |
7959 | ? NULL : gfc_state_stack->previous->sym->name; | |
6ade726e | 7960 | abreviated_modproc_decl = gfc_state_stack->previous->sym |
7961 | && gfc_state_stack->previous->sym->abr_modproc_decl; | |
d18a512a | 7962 | break; |
7963 | ||
7964 | default: | |
7965 | break; | |
4ee9c684 | 7966 | } |
7967 | ||
6ade726e | 7968 | if (!abreviated_modproc_decl) |
7969 | abreviated_modproc_decl = gfc_current_block () | |
7970 | && gfc_current_block ()->abr_modproc_decl; | |
4b8eb6ca | 7971 | |
4ee9c684 | 7972 | switch (state) |
7973 | { | |
7974 | case COMP_NONE: | |
7975 | case COMP_PROGRAM: | |
7976 | *st = ST_END_PROGRAM; | |
7977 | target = " program"; | |
c0985832 | 7978 | eos_ok = 1; |
4ee9c684 | 7979 | break; |
7980 | ||
7981 | case COMP_SUBROUTINE: | |
7982 | *st = ST_END_SUBROUTINE; | |
4b8eb6ca | 7983 | if (!abreviated_modproc_decl) |
4ee9c684 | 7984 | target = " subroutine"; |
4b8eb6ca | 7985 | else |
7986 | target = " procedure"; | |
c0985832 | 7987 | eos_ok = !contained_procedure (); |
4ee9c684 | 7988 | break; |
7989 | ||
7990 | case COMP_FUNCTION: | |
7991 | *st = ST_END_FUNCTION; | |
4b8eb6ca | 7992 | if (!abreviated_modproc_decl) |
4ee9c684 | 7993 | target = " function"; |
4b8eb6ca | 7994 | else |
7995 | target = " procedure"; | |
c0985832 | 7996 | eos_ok = !contained_procedure (); |
4ee9c684 | 7997 | break; |
7998 | ||
7999 | case COMP_BLOCK_DATA: | |
8000 | *st = ST_END_BLOCK_DATA; | |
8001 | target = " block data"; | |
c0985832 | 8002 | eos_ok = 1; |
4ee9c684 | 8003 | break; |
8004 | ||
8005 | case COMP_MODULE: | |
8006 | *st = ST_END_MODULE; | |
8007 | target = " module"; | |
c0985832 | 8008 | eos_ok = 1; |
4ee9c684 | 8009 | break; |
8010 | ||
4b8eb6ca | 8011 | case COMP_SUBMODULE: |
8012 | *st = ST_END_SUBMODULE; | |
8013 | target = " submodule"; | |
8014 | eos_ok = 1; | |
8015 | break; | |
8016 | ||
4ee9c684 | 8017 | case COMP_INTERFACE: |
8018 | *st = ST_END_INTERFACE; | |
8019 | target = " interface"; | |
c0985832 | 8020 | eos_ok = 0; |
4ee9c684 | 8021 | break; |
8022 | ||
d7cd448a | 8023 | case COMP_MAP: |
8024 | *st = ST_END_MAP; | |
8025 | target = " map"; | |
8026 | eos_ok = 0; | |
8027 | break; | |
8028 | ||
8029 | case COMP_UNION: | |
8030 | *st = ST_END_UNION; | |
8031 | target = " union"; | |
8032 | eos_ok = 0; | |
8033 | break; | |
8034 | ||
8035 | case COMP_STRUCTURE: | |
8036 | *st = ST_END_STRUCTURE; | |
8037 | target = " structure"; | |
8038 | eos_ok = 0; | |
8039 | break; | |
8040 | ||
4ee9c684 | 8041 | case COMP_DERIVED: |
7fd88f6e | 8042 | case COMP_DERIVED_CONTAINS: |
4ee9c684 | 8043 | *st = ST_END_TYPE; |
8044 | target = " type"; | |
c0985832 | 8045 | eos_ok = 0; |
4ee9c684 | 8046 | break; |
8047 | ||
d18a512a | 8048 | case COMP_ASSOCIATE: |
8049 | *st = ST_END_ASSOCIATE; | |
8050 | target = " associate"; | |
8051 | eos_ok = 0; | |
8052 | break; | |
8053 | ||
6a7084d7 | 8054 | case COMP_BLOCK: |
8055 | *st = ST_END_BLOCK; | |
8056 | target = " block"; | |
8057 | eos_ok = 0; | |
8058 | break; | |
8059 | ||
4ee9c684 | 8060 | case COMP_IF: |
8061 | *st = ST_ENDIF; | |
8062 | target = " if"; | |
c0985832 | 8063 | eos_ok = 0; |
4ee9c684 | 8064 | break; |
8065 | ||
8066 | case COMP_DO: | |
55ea8666 | 8067 | case COMP_DO_CONCURRENT: |
4ee9c684 | 8068 | *st = ST_ENDDO; |
8069 | target = " do"; | |
c0985832 | 8070 | eos_ok = 0; |
4ee9c684 | 8071 | break; |
8072 | ||
c6cd3066 | 8073 | case COMP_CRITICAL: |
8074 | *st = ST_END_CRITICAL; | |
8075 | target = " critical"; | |
8076 | eos_ok = 0; | |
8077 | break; | |
8078 | ||
4ee9c684 | 8079 | case COMP_SELECT: |
1de1b1a9 | 8080 | case COMP_SELECT_TYPE: |
4ee9c684 | 8081 | *st = ST_END_SELECT; |
8082 | target = " select"; | |
c0985832 | 8083 | eos_ok = 0; |
4ee9c684 | 8084 | break; |
8085 | ||
8086 | case COMP_FORALL: | |
8087 | *st = ST_END_FORALL; | |
8088 | target = " forall"; | |
c0985832 | 8089 | eos_ok = 0; |
4ee9c684 | 8090 | break; |
8091 | ||
8092 | case COMP_WHERE: | |
8093 | *st = ST_END_WHERE; | |
8094 | target = " where"; | |
c0985832 | 8095 | eos_ok = 0; |
4ee9c684 | 8096 | break; |
8097 | ||
3b6a4b41 | 8098 | case COMP_ENUM: |
8099 | *st = ST_END_ENUM; | |
8100 | target = " enum"; | |
8101 | eos_ok = 0; | |
8102 | last_initializer = NULL; | |
8103 | set_enum_kind (); | |
8104 | gfc_free_enum_history (); | |
8105 | break; | |
8106 | ||
4ee9c684 | 8107 | default: |
8108 | gfc_error ("Unexpected END statement at %C"); | |
8109 | goto cleanup; | |
8110 | } | |
8111 | ||
8d779aef | 8112 | old_loc = gfc_current_locus; |
4ee9c684 | 8113 | if (gfc_match_eos () == MATCH_YES) |
8114 | { | |
4b20e9cf | 8115 | if (!eos_ok && (*st == ST_END_SUBROUTINE || *st == ST_END_FUNCTION)) |
8116 | { | |
60e19868 | 8117 | if (!gfc_notify_std (GFC_STD_F2008, "END statement " |
76e207a9 | 8118 | "instead of %s statement at %L", |
4b8eb6ca | 8119 | abreviated_modproc_decl ? "END PROCEDURE" |
8120 | : gfc_ascii_statement(*st), &old_loc)) | |
4b20e9cf | 8121 | goto cleanup; |
8122 | } | |
8123 | else if (!eos_ok) | |
4ee9c684 | 8124 | { |
f6d0e37a | 8125 | /* We would have required END [something]. */ |
d197c9ee | 8126 | gfc_error ("%s statement expected at %L", |
8127 | gfc_ascii_statement (*st), &old_loc); | |
4ee9c684 | 8128 | goto cleanup; |
8129 | } | |
8130 | ||
8131 | return MATCH_YES; | |
8132 | } | |
8133 | ||
8134 | /* Verify that we've got the sort of end-block that we're expecting. */ | |
8135 | if (gfc_match (target) != MATCH_YES) | |
8136 | { | |
4b8eb6ca | 8137 | gfc_error ("Expecting %s statement at %L", abreviated_modproc_decl |
8138 | ? "END PROCEDURE" : gfc_ascii_statement(*st), &old_loc); | |
4ee9c684 | 8139 | goto cleanup; |
8140 | } | |
cc7124a6 | 8141 | else |
8142 | got_matching_end = true; | |
4ee9c684 | 8143 | |
8d779aef | 8144 | old_loc = gfc_current_locus; |
4ee9c684 | 8145 | /* If we're at the end, make sure a block name wasn't required. */ |
8146 | if (gfc_match_eos () == MATCH_YES) | |
8147 | { | |
8148 | ||
0d0ce415 | 8149 | if (*st != ST_ENDDO && *st != ST_ENDIF && *st != ST_END_SELECT |
c6cd3066 | 8150 | && *st != ST_END_FORALL && *st != ST_END_WHERE && *st != ST_END_BLOCK |
d18a512a | 8151 | && *st != ST_END_ASSOCIATE && *st != ST_END_CRITICAL) |
4ee9c684 | 8152 | return MATCH_YES; |
8153 | ||
6a7084d7 | 8154 | if (!block_name) |
4ee9c684 | 8155 | return MATCH_YES; |
8156 | ||
716da296 | 8157 | gfc_error ("Expected block name of %qs in %s statement at %L", |
8d779aef | 8158 | block_name, gfc_ascii_statement (*st), &old_loc); |
4ee9c684 | 8159 | |
8160 | return MATCH_ERROR; | |
8161 | } | |
8162 | ||
8163 | /* END INTERFACE has a special handler for its several possible endings. */ | |
8164 | if (*st == ST_END_INTERFACE) | |
8165 | return gfc_match_end_interface (); | |
8166 | ||
f6d0e37a | 8167 | /* We haven't hit the end of statement, so what is left must be an |
8168 | end-name. */ | |
4ee9c684 | 8169 | m = gfc_match_space (); |
8170 | if (m == MATCH_YES) | |
8171 | m = gfc_match_name (name); | |
8172 | ||
8173 | if (m == MATCH_NO) | |
8174 | gfc_error ("Expected terminating name at %C"); | |
8175 | if (m != MATCH_YES) | |
8176 | goto cleanup; | |
8177 | ||
8178 | if (block_name == NULL) | |
8179 | goto syntax; | |
8180 | ||
df8f279f | 8181 | /* We have to pick out the declared submodule name from the composite |
8182 | required by F2008:11.2.3 para 2, which ends in the declared name. */ | |
8183 | if (state == COMP_SUBMODULE) | |
8184 | block_name = strchr (block_name, '.') + 1; | |
8185 | ||
1e057e9b | 8186 | if (strcmp (name, block_name) != 0 && strcmp (block_name, "ppr@") != 0) |
4ee9c684 | 8187 | { |
716da296 | 8188 | gfc_error ("Expected label %qs for %s statement at %C", block_name, |
4ee9c684 | 8189 | gfc_ascii_statement (*st)); |
8190 | goto cleanup; | |
8191 | } | |
1e057e9b | 8192 | /* Procedure pointer as function result. */ |
8193 | else if (strcmp (block_name, "ppr@") == 0 | |
8194 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) != 0) | |
8195 | { | |
716da296 | 8196 | gfc_error ("Expected label %qs for %s statement at %C", |
1e057e9b | 8197 | gfc_current_block ()->ns->proc_name->name, |
8198 | gfc_ascii_statement (*st)); | |
8199 | goto cleanup; | |
8200 | } | |
4ee9c684 | 8201 | |
8202 | if (gfc_match_eos () == MATCH_YES) | |
8203 | return MATCH_YES; | |
8204 | ||
8205 | syntax: | |
8206 | gfc_syntax_error (*st); | |
8207 | ||
8208 | cleanup: | |
cbb9e6aa | 8209 | gfc_current_locus = old_loc; |
9e5e87d9 | 8210 | |
8211 | /* If we are missing an END BLOCK, we created a half-ready namespace. | |
8212 | Remove it from the parent namespace's sibling list. */ | |
8213 | ||
cc7124a6 | 8214 | while (state == COMP_BLOCK && !got_matching_end) |
9e5e87d9 | 8215 | { |
8216 | parent_ns = gfc_current_ns->parent; | |
8217 | ||
8218 | nsp = &(gfc_state_stack->previous->tail->ext.block.ns); | |
8219 | ||
8220 | prev_ns = NULL; | |
8221 | ns = *nsp; | |
8222 | while (ns) | |
8223 | { | |
8224 | if (ns == gfc_current_ns) | |
8225 | { | |
8226 | if (prev_ns == NULL) | |
8227 | *nsp = NULL; | |
8228 | else | |
8229 | prev_ns->sibling = ns->sibling; | |
8230 | } | |
8231 | prev_ns = ns; | |
8232 | ns = ns->sibling; | |
8233 | } | |
cc7124a6 | 8234 | |
9e5e87d9 | 8235 | gfc_free_namespace (gfc_current_ns); |
8236 | gfc_current_ns = parent_ns; | |
8097c1a6 | 8237 | gfc_state_stack = gfc_state_stack->previous; |
8238 | state = gfc_current_state (); | |
9e5e87d9 | 8239 | } |
8240 | ||
4ee9c684 | 8241 | return MATCH_ERROR; |
8242 | } | |
8243 | ||
8244 | ||
8245 | ||
8246 | /***************** Attribute declaration statements ****************/ | |
8247 | ||
8248 | /* Set the attribute of a single variable. */ | |
8249 | ||
8250 | static match | |
8251 | attr_decl1 (void) | |
8252 | { | |
8253 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8254 | gfc_array_spec *as; | |
75e5ecf3 | 8255 | |
8256 | /* Workaround -Wmaybe-uninitialized false positive during | |
8257 | profiledbootstrap by initializing them. */ | |
8258 | gfc_symbol *sym = NULL; | |
4ee9c684 | 8259 | locus var_locus; |
8260 | match m; | |
8261 | ||
8262 | as = NULL; | |
8263 | ||
8264 | m = gfc_match_name (name); | |
8265 | if (m != MATCH_YES) | |
8266 | goto cleanup; | |
8267 | ||
36b0a1b0 | 8268 | if (find_special (name, &sym, false)) |
4ee9c684 | 8269 | return MATCH_ERROR; |
8270 | ||
60e19868 | 8271 | if (!check_function_name (name)) |
f3e89339 | 8272 | { |
8273 | m = MATCH_ERROR; | |
8274 | goto cleanup; | |
8275 | } | |
8db94b3b | 8276 | |
cbb9e6aa | 8277 | var_locus = gfc_current_locus; |
4ee9c684 | 8278 | |
8279 | /* Deal with possible array specification for certain attributes. */ | |
8280 | if (current_attr.dimension | |
aff518b0 | 8281 | || current_attr.codimension |
4ee9c684 | 8282 | || current_attr.allocatable |
8283 | || current_attr.pointer | |
8284 | || current_attr.target) | |
8285 | { | |
aff518b0 | 8286 | m = gfc_match_array_spec (&as, !current_attr.codimension, |
8287 | !current_attr.dimension | |
8288 | && !current_attr.pointer | |
8289 | && !current_attr.target); | |
4ee9c684 | 8290 | if (m == MATCH_ERROR) |
8291 | goto cleanup; | |
8292 | ||
8293 | if (current_attr.dimension && m == MATCH_NO) | |
8294 | { | |
1a9745d2 | 8295 | gfc_error ("Missing array specification at %L in DIMENSION " |
8296 | "statement", &var_locus); | |
4ee9c684 | 8297 | m = MATCH_ERROR; |
8298 | goto cleanup; | |
8299 | } | |
8300 | ||
13aebeb0 | 8301 | if (current_attr.dimension && sym->value) |
8302 | { | |
8303 | gfc_error ("Dimensions specified for %s at %L after its " | |
d0abd9e0 | 8304 | "initialization", sym->name, &var_locus); |
13aebeb0 | 8305 | m = MATCH_ERROR; |
8306 | goto cleanup; | |
8307 | } | |
8308 | ||
aff518b0 | 8309 | if (current_attr.codimension && m == MATCH_NO) |
8310 | { | |
8311 | gfc_error ("Missing array specification at %L in CODIMENSION " | |
8312 | "statement", &var_locus); | |
8313 | m = MATCH_ERROR; | |
8314 | goto cleanup; | |
8315 | } | |
8316 | ||
4ee9c684 | 8317 | if ((current_attr.allocatable || current_attr.pointer) |
8318 | && (m == MATCH_YES) && (as->type != AS_DEFERRED)) | |
8319 | { | |
1a9745d2 | 8320 | gfc_error ("Array specification must be deferred at %L", &var_locus); |
4ee9c684 | 8321 | m = MATCH_ERROR; |
8322 | goto cleanup; | |
8323 | } | |
8324 | } | |
8325 | ||
b3704193 | 8326 | /* Update symbol table. DIMENSION attribute is set in |
8327 | gfc_set_array_spec(). For CLASS variables, this must be applied | |
607ae689 | 8328 | to the first component, or '_data' field. */ |
a33fbb6f | 8329 | if (sym->ts.type == BT_CLASS && sym->ts.u.derived->attr.is_class) |
4ee9c684 | 8330 | { |
60e19868 | 8331 | if (!gfc_copy_attr (&CLASS_DATA(sym)->attr, ¤t_attr, &var_locus)) |
b3704193 | 8332 | { |
8333 | m = MATCH_ERROR; | |
8334 | goto cleanup; | |
8335 | } | |
b3704193 | 8336 | } |
8337 | else | |
8338 | { | |
aff518b0 | 8339 | if (current_attr.dimension == 0 && current_attr.codimension == 0 |
60e19868 | 8340 | && !gfc_copy_attr (&sym->attr, ¤t_attr, &var_locus)) |
b3704193 | 8341 | { |
8342 | m = MATCH_ERROR; | |
8343 | goto cleanup; | |
8344 | } | |
4ee9c684 | 8345 | } |
8db94b3b | 8346 | |
fa102e56 | 8347 | if (sym->ts.type == BT_CLASS |
e8393d49 | 8348 | && !gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as)) |
29dae2bf | 8349 | { |
8350 | m = MATCH_ERROR; | |
8351 | goto cleanup; | |
8352 | } | |
4ee9c684 | 8353 | |
60e19868 | 8354 | if (!gfc_set_array_spec (sym, as, &var_locus)) |
4ee9c684 | 8355 | { |
8356 | m = MATCH_ERROR; | |
8357 | goto cleanup; | |
8358 | } | |
e14bee04 | 8359 | |
b549d2a5 | 8360 | if (sym->attr.cray_pointee && sym->as != NULL) |
8361 | { | |
8362 | /* Fix the array spec. */ | |
8db94b3b | 8363 | m = gfc_mod_pointee_as (sym->as); |
b549d2a5 | 8364 | if (m == MATCH_ERROR) |
8365 | goto cleanup; | |
8366 | } | |
4ee9c684 | 8367 | |
60e19868 | 8368 | if (!gfc_add_attribute (&sym->attr, &var_locus)) |
14efb9b7 | 8369 | { |
8370 | m = MATCH_ERROR; | |
8371 | goto cleanup; | |
8372 | } | |
8373 | ||
4ee9c684 | 8374 | if ((current_attr.external || current_attr.intrinsic) |
8375 | && sym->attr.flavor != FL_PROCEDURE | |
60e19868 | 8376 | && !gfc_add_flavor (&sym->attr, FL_PROCEDURE, sym->name, NULL)) |
4ee9c684 | 8377 | { |
8378 | m = MATCH_ERROR; | |
8379 | goto cleanup; | |
8380 | } | |
8381 | ||
1e057e9b | 8382 | add_hidden_procptr_result (sym); |
8383 | ||
4ee9c684 | 8384 | return MATCH_YES; |
8385 | ||
8386 | cleanup: | |
8387 | gfc_free_array_spec (as); | |
8388 | return m; | |
8389 | } | |
8390 | ||
8391 | ||
8392 | /* Generic attribute declaration subroutine. Used for attributes that | |
8393 | just have a list of names. */ | |
8394 | ||
8395 | static match | |
8396 | attr_decl (void) | |
8397 | { | |
8398 | match m; | |
8399 | ||
8400 | /* Gobble the optional double colon, by simply ignoring the result | |
8401 | of gfc_match(). */ | |
8402 | gfc_match (" ::"); | |
8403 | ||
8404 | for (;;) | |
8405 | { | |
8406 | m = attr_decl1 (); | |
8407 | if (m != MATCH_YES) | |
8408 | break; | |
8409 | ||
8410 | if (gfc_match_eos () == MATCH_YES) | |
8411 | { | |
8412 | m = MATCH_YES; | |
8413 | break; | |
8414 | } | |
8415 | ||
8416 | if (gfc_match_char (',') != MATCH_YES) | |
8417 | { | |
8418 | gfc_error ("Unexpected character in variable list at %C"); | |
8419 | m = MATCH_ERROR; | |
8420 | break; | |
8421 | } | |
8422 | } | |
8423 | ||
8424 | return m; | |
8425 | } | |
8426 | ||
8427 | ||
b549d2a5 | 8428 | /* This routine matches Cray Pointer declarations of the form: |
8429 | pointer ( <pointer>, <pointee> ) | |
8430 | or | |
e14bee04 | 8431 | pointer ( <pointer1>, <pointee1> ), ( <pointer2>, <pointee2> ), ... |
8432 | The pointer, if already declared, should be an integer. Otherwise, we | |
b549d2a5 | 8433 | set it as BT_INTEGER with kind gfc_index_integer_kind. The pointee may |
8434 | be either a scalar, or an array declaration. No space is allocated for | |
e14bee04 | 8435 | the pointee. For the statement |
b549d2a5 | 8436 | pointer (ipt, ar(10)) |
8437 | any subsequent uses of ar will be translated (in C-notation) as | |
e14bee04 | 8438 | ar(i) => ((<type> *) ipt)(i) |
b7bf3f81 | 8439 | After gimplification, pointee variable will disappear in the code. */ |
b549d2a5 | 8440 | |
8441 | static match | |
8442 | cray_pointer_decl (void) | |
8443 | { | |
8444 | match m; | |
aff518b0 | 8445 | gfc_array_spec *as = NULL; |
b549d2a5 | 8446 | gfc_symbol *cptr; /* Pointer symbol. */ |
8447 | gfc_symbol *cpte; /* Pointee symbol. */ | |
8448 | locus var_locus; | |
8449 | bool done = false; | |
8450 | ||
8451 | while (!done) | |
8452 | { | |
8453 | if (gfc_match_char ('(') != MATCH_YES) | |
8454 | { | |
0d2b3c9c | 8455 | gfc_error ("Expected %<(%> at %C"); |
e14bee04 | 8456 | return MATCH_ERROR; |
b549d2a5 | 8457 | } |
e14bee04 | 8458 | |
b549d2a5 | 8459 | /* Match pointer. */ |
8460 | var_locus = gfc_current_locus; | |
8461 | gfc_clear_attr (¤t_attr); | |
8462 | gfc_add_cray_pointer (¤t_attr, &var_locus); | |
8463 | current_ts.type = BT_INTEGER; | |
8464 | current_ts.kind = gfc_index_integer_kind; | |
8465 | ||
e14bee04 | 8466 | m = gfc_match_symbol (&cptr, 0); |
b549d2a5 | 8467 | if (m != MATCH_YES) |
8468 | { | |
8469 | gfc_error ("Expected variable name at %C"); | |
8470 | return m; | |
8471 | } | |
e14bee04 | 8472 | |
60e19868 | 8473 | if (!gfc_add_cray_pointer (&cptr->attr, &var_locus)) |
b549d2a5 | 8474 | return MATCH_ERROR; |
8475 | ||
e14bee04 | 8476 | gfc_set_sym_referenced (cptr); |
b549d2a5 | 8477 | |
8478 | if (cptr->ts.type == BT_UNKNOWN) /* Override the type, if necessary. */ | |
8479 | { | |
8480 | cptr->ts.type = BT_INTEGER; | |
e14bee04 | 8481 | cptr->ts.kind = gfc_index_integer_kind; |
b549d2a5 | 8482 | } |
8483 | else if (cptr->ts.type != BT_INTEGER) | |
8484 | { | |
7698a624 | 8485 | gfc_error ("Cray pointer at %C must be an integer"); |
b549d2a5 | 8486 | return MATCH_ERROR; |
8487 | } | |
8488 | else if (cptr->ts.kind < gfc_index_integer_kind) | |
6f521718 | 8489 | gfc_warning (0, "Cray pointer at %C has %d bytes of precision;" |
7698a624 | 8490 | " memory addresses require %d bytes", |
1a9745d2 | 8491 | cptr->ts.kind, gfc_index_integer_kind); |
b549d2a5 | 8492 | |
8493 | if (gfc_match_char (',') != MATCH_YES) | |
8494 | { | |
8495 | gfc_error ("Expected \",\" at %C"); | |
e14bee04 | 8496 | return MATCH_ERROR; |
b549d2a5 | 8497 | } |
8498 | ||
e14bee04 | 8499 | /* Match Pointee. */ |
b549d2a5 | 8500 | var_locus = gfc_current_locus; |
8501 | gfc_clear_attr (¤t_attr); | |
8502 | gfc_add_cray_pointee (¤t_attr, &var_locus); | |
8503 | current_ts.type = BT_UNKNOWN; | |
8504 | current_ts.kind = 0; | |
8505 | ||
8506 | m = gfc_match_symbol (&cpte, 0); | |
8507 | if (m != MATCH_YES) | |
8508 | { | |
8509 | gfc_error ("Expected variable name at %C"); | |
8510 | return m; | |
8511 | } | |
e14bee04 | 8512 | |
b549d2a5 | 8513 | /* Check for an optional array spec. */ |
aff518b0 | 8514 | m = gfc_match_array_spec (&as, true, false); |
b549d2a5 | 8515 | if (m == MATCH_ERROR) |
8516 | { | |
8517 | gfc_free_array_spec (as); | |
8518 | return m; | |
8519 | } | |
8520 | else if (m == MATCH_NO) | |
8521 | { | |
8522 | gfc_free_array_spec (as); | |
8523 | as = NULL; | |
8db94b3b | 8524 | } |
b549d2a5 | 8525 | |
60e19868 | 8526 | if (!gfc_add_cray_pointee (&cpte->attr, &var_locus)) |
b549d2a5 | 8527 | return MATCH_ERROR; |
8528 | ||
8529 | gfc_set_sym_referenced (cpte); | |
8530 | ||
8531 | if (cpte->as == NULL) | |
8532 | { | |
60e19868 | 8533 | if (!gfc_set_array_spec (cpte, as, &var_locus)) |
b549d2a5 | 8534 | gfc_internal_error ("Couldn't set Cray pointee array spec."); |
8535 | } | |
8536 | else if (as != NULL) | |
8537 | { | |
7698a624 | 8538 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
b549d2a5 | 8539 | gfc_free_array_spec (as); |
8540 | return MATCH_ERROR; | |
8541 | } | |
8db94b3b | 8542 | |
b549d2a5 | 8543 | as = NULL; |
8db94b3b | 8544 | |
b549d2a5 | 8545 | if (cpte->as != NULL) |
8546 | { | |
8547 | /* Fix array spec. */ | |
8548 | m = gfc_mod_pointee_as (cpte->as); | |
8549 | if (m == MATCH_ERROR) | |
8550 | return m; | |
8db94b3b | 8551 | } |
8552 | ||
b549d2a5 | 8553 | /* Point the Pointee at the Pointer. */ |
b7bf3f81 | 8554 | cpte->cp_pointer = cptr; |
b549d2a5 | 8555 | |
8556 | if (gfc_match_char (')') != MATCH_YES) | |
8557 | { | |
8558 | gfc_error ("Expected \")\" at %C"); | |
8db94b3b | 8559 | return MATCH_ERROR; |
b549d2a5 | 8560 | } |
8561 | m = gfc_match_char (','); | |
8562 | if (m != MATCH_YES) | |
8563 | done = true; /* Stop searching for more declarations. */ | |
8564 | ||
8565 | } | |
8db94b3b | 8566 | |
b549d2a5 | 8567 | if (m == MATCH_ERROR /* Failed when trying to find ',' above. */ |
8568 | || gfc_match_eos () != MATCH_YES) | |
8569 | { | |
0d2b3c9c | 8570 | gfc_error ("Expected %<,%> or end of statement at %C"); |
b549d2a5 | 8571 | return MATCH_ERROR; |
8572 | } | |
8573 | return MATCH_YES; | |
8574 | } | |
8575 | ||
8576 | ||
4ee9c684 | 8577 | match |
8578 | gfc_match_external (void) | |
8579 | { | |
8580 | ||
8581 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 8582 | current_attr.external = 1; |
4ee9c684 | 8583 | |
8584 | return attr_decl (); | |
8585 | } | |
8586 | ||
8587 | ||
4ee9c684 | 8588 | match |
8589 | gfc_match_intent (void) | |
8590 | { | |
8591 | sym_intent intent; | |
8592 | ||
6a7084d7 | 8593 | /* This is not allowed within a BLOCK construct! */ |
8594 | if (gfc_current_state () == COMP_BLOCK) | |
8595 | { | |
8596 | gfc_error ("INTENT is not allowed inside of BLOCK at %C"); | |
8597 | return MATCH_ERROR; | |
8598 | } | |
8599 | ||
4ee9c684 | 8600 | intent = match_intent_spec (); |
8601 | if (intent == INTENT_UNKNOWN) | |
8602 | return MATCH_ERROR; | |
8603 | ||
8604 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 8605 | current_attr.intent = intent; |
4ee9c684 | 8606 | |
8607 | return attr_decl (); | |
8608 | } | |
8609 | ||
8610 | ||
8611 | match | |
8612 | gfc_match_intrinsic (void) | |
8613 | { | |
8614 | ||
8615 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 8616 | current_attr.intrinsic = 1; |
4ee9c684 | 8617 | |
8618 | return attr_decl (); | |
8619 | } | |
8620 | ||
8621 | ||
8622 | match | |
8623 | gfc_match_optional (void) | |
8624 | { | |
6a7084d7 | 8625 | /* This is not allowed within a BLOCK construct! */ |
8626 | if (gfc_current_state () == COMP_BLOCK) | |
8627 | { | |
8628 | gfc_error ("OPTIONAL is not allowed inside of BLOCK at %C"); | |
8629 | return MATCH_ERROR; | |
8630 | } | |
4ee9c684 | 8631 | |
8632 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 8633 | current_attr.optional = 1; |
4ee9c684 | 8634 | |
8635 | return attr_decl (); | |
8636 | } | |
8637 | ||
8638 | ||
8639 | match | |
8640 | gfc_match_pointer (void) | |
8641 | { | |
b549d2a5 | 8642 | gfc_gobble_whitespace (); |
e0be6f02 | 8643 | if (gfc_peek_ascii_char () == '(') |
b549d2a5 | 8644 | { |
829d7a08 | 8645 | if (!flag_cray_pointer) |
b549d2a5 | 8646 | { |
1a9745d2 | 8647 | gfc_error ("Cray pointer declaration at %C requires -fcray-pointer " |
8648 | "flag"); | |
b549d2a5 | 8649 | return MATCH_ERROR; |
8650 | } | |
8651 | return cray_pointer_decl (); | |
8652 | } | |
8653 | else | |
8654 | { | |
8655 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 8656 | current_attr.pointer = 1; |
8db94b3b | 8657 | |
b549d2a5 | 8658 | return attr_decl (); |
8659 | } | |
4ee9c684 | 8660 | } |
8661 | ||
8662 | ||
8663 | match | |
8664 | gfc_match_allocatable (void) | |
8665 | { | |
4ee9c684 | 8666 | gfc_clear_attr (¤t_attr); |
14efb9b7 | 8667 | current_attr.allocatable = 1; |
4ee9c684 | 8668 | |
8669 | return attr_decl (); | |
8670 | } | |
8671 | ||
8672 | ||
aff518b0 | 8673 | match |
8674 | gfc_match_codimension (void) | |
8675 | { | |
8676 | gfc_clear_attr (¤t_attr); | |
8677 | current_attr.codimension = 1; | |
8678 | ||
8679 | return attr_decl (); | |
8680 | } | |
8681 | ||
8682 | ||
b3c3927c | 8683 | match |
8684 | gfc_match_contiguous (void) | |
8685 | { | |
60e19868 | 8686 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS statement at %C")) |
b3c3927c | 8687 | return MATCH_ERROR; |
8688 | ||
8689 | gfc_clear_attr (¤t_attr); | |
8690 | current_attr.contiguous = 1; | |
8691 | ||
8692 | return attr_decl (); | |
8693 | } | |
8694 | ||
8695 | ||
4ee9c684 | 8696 | match |
8697 | gfc_match_dimension (void) | |
8698 | { | |
4ee9c684 | 8699 | gfc_clear_attr (¤t_attr); |
14efb9b7 | 8700 | current_attr.dimension = 1; |
4ee9c684 | 8701 | |
8702 | return attr_decl (); | |
8703 | } | |
8704 | ||
8705 | ||
8706 | match | |
8707 | gfc_match_target (void) | |
8708 | { | |
4ee9c684 | 8709 | gfc_clear_attr (¤t_attr); |
14efb9b7 | 8710 | current_attr.target = 1; |
4ee9c684 | 8711 | |
8712 | return attr_decl (); | |
8713 | } | |
8714 | ||
8715 | ||
8716 | /* Match the list of entities being specified in a PUBLIC or PRIVATE | |
8717 | statement. */ | |
8718 | ||
8719 | static match | |
8720 | access_attr_decl (gfc_statement st) | |
8721 | { | |
8722 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8723 | interface_type type; | |
8724 | gfc_user_op *uop; | |
c2958b6b | 8725 | gfc_symbol *sym, *dt_sym; |
dcb1b019 | 8726 | gfc_intrinsic_op op; |
4ee9c684 | 8727 | match m; |
8728 | ||
8729 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8730 | goto done; | |
8731 | ||
8732 | for (;;) | |
8733 | { | |
dcb1b019 | 8734 | m = gfc_match_generic_spec (&type, name, &op); |
4ee9c684 | 8735 | if (m == MATCH_NO) |
8736 | goto syntax; | |
8737 | if (m == MATCH_ERROR) | |
8738 | return MATCH_ERROR; | |
8739 | ||
8740 | switch (type) | |
8741 | { | |
8742 | case INTERFACE_NAMELESS: | |
94fa7146 | 8743 | case INTERFACE_ABSTRACT: |
4ee9c684 | 8744 | goto syntax; |
8745 | ||
8746 | case INTERFACE_GENERIC: | |
9f732c4e | 8747 | case INTERFACE_DTIO: |
2f78ea2e | 8748 | |
4ee9c684 | 8749 | if (gfc_get_symbol (name, NULL, &sym)) |
8750 | goto done; | |
8751 | ||
7966c683 | 8752 | if (type == INTERFACE_DTIO |
8753 | && gfc_current_ns->proc_name | |
8754 | && gfc_current_ns->proc_name->attr.flavor == FL_MODULE | |
8755 | && sym->attr.flavor == FL_UNKNOWN) | |
8756 | sym->attr.flavor = FL_PROCEDURE; | |
8757 | ||
76e207a9 | 8758 | if (!gfc_add_access (&sym->attr, |
8759 | (st == ST_PUBLIC) | |
8760 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
60e19868 | 8761 | sym->name, NULL)) |
4ee9c684 | 8762 | return MATCH_ERROR; |
8763 | ||
c2958b6b | 8764 | if (sym->attr.generic && (dt_sym = gfc_find_dt_in_generic (sym)) |
76e207a9 | 8765 | && !gfc_add_access (&dt_sym->attr, |
8766 | (st == ST_PUBLIC) | |
8767 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
60e19868 | 8768 | sym->name, NULL)) |
c2958b6b | 8769 | return MATCH_ERROR; |
8770 | ||
4ee9c684 | 8771 | break; |
8772 | ||
8773 | case INTERFACE_INTRINSIC_OP: | |
dcb1b019 | 8774 | if (gfc_current_ns->operator_access[op] == ACCESS_UNKNOWN) |
4ee9c684 | 8775 | { |
0c482c1d | 8776 | gfc_intrinsic_op other_op; |
8777 | ||
dcb1b019 | 8778 | gfc_current_ns->operator_access[op] = |
4ee9c684 | 8779 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; |
0c482c1d | 8780 | |
8781 | /* Handle the case if there is another op with the same | |
8782 | function, for INTRINSIC_EQ vs. INTRINSIC_EQ_OS and so on. */ | |
8783 | other_op = gfc_equivalent_op (op); | |
8784 | ||
8785 | if (other_op != INTRINSIC_NONE) | |
8786 | gfc_current_ns->operator_access[other_op] = | |
8787 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
8788 | ||
4ee9c684 | 8789 | } |
8790 | else | |
8791 | { | |
8792 | gfc_error ("Access specification of the %s operator at %C has " | |
dcb1b019 | 8793 | "already been specified", gfc_op2string (op)); |
4ee9c684 | 8794 | goto done; |
8795 | } | |
8796 | ||
8797 | break; | |
8798 | ||
8799 | case INTERFACE_USER_OP: | |
8800 | uop = gfc_get_uop (name); | |
8801 | ||
8802 | if (uop->access == ACCESS_UNKNOWN) | |
8803 | { | |
1a9745d2 | 8804 | uop->access = (st == ST_PUBLIC) |
8805 | ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
4ee9c684 | 8806 | } |
8807 | else | |
8808 | { | |
1a9745d2 | 8809 | gfc_error ("Access specification of the .%s. operator at %C " |
8810 | "has already been specified", sym->name); | |
4ee9c684 | 8811 | goto done; |
8812 | } | |
8813 | ||
8814 | break; | |
8815 | } | |
8816 | ||
8817 | if (gfc_match_char (',') == MATCH_NO) | |
8818 | break; | |
8819 | } | |
8820 | ||
8821 | if (gfc_match_eos () != MATCH_YES) | |
8822 | goto syntax; | |
8823 | return MATCH_YES; | |
8824 | ||
8825 | syntax: | |
8826 | gfc_syntax_error (st); | |
8827 | ||
8828 | done: | |
8829 | return MATCH_ERROR; | |
8830 | } | |
8831 | ||
8832 | ||
3ea52af3 | 8833 | match |
8834 | gfc_match_protected (void) | |
8835 | { | |
8836 | gfc_symbol *sym; | |
8837 | match m; | |
8838 | ||
54c0257b | 8839 | if (!gfc_current_ns->proc_name |
8840 | || gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
3ea52af3 | 8841 | { |
8842 | gfc_error ("PROTECTED at %C only allowed in specification " | |
8843 | "part of a module"); | |
8844 | return MATCH_ERROR; | |
8845 | ||
8846 | } | |
8847 | ||
60e19868 | 8848 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED statement at %C")) |
3ea52af3 | 8849 | return MATCH_ERROR; |
8850 | ||
8851 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8852 | { | |
8853 | return MATCH_ERROR; | |
8854 | } | |
8855 | ||
8856 | if (gfc_match_eos () == MATCH_YES) | |
8857 | goto syntax; | |
8858 | ||
8859 | for(;;) | |
8860 | { | |
8861 | m = gfc_match_symbol (&sym, 0); | |
8862 | switch (m) | |
8863 | { | |
8864 | case MATCH_YES: | |
60e19868 | 8865 | if (!gfc_add_protected (&sym->attr, sym->name, &gfc_current_locus)) |
3ea52af3 | 8866 | return MATCH_ERROR; |
8867 | goto next_item; | |
8868 | ||
8869 | case MATCH_NO: | |
8870 | break; | |
8871 | ||
8872 | case MATCH_ERROR: | |
8873 | return MATCH_ERROR; | |
8874 | } | |
8875 | ||
8876 | next_item: | |
8877 | if (gfc_match_eos () == MATCH_YES) | |
8878 | break; | |
8879 | if (gfc_match_char (',') != MATCH_YES) | |
8880 | goto syntax; | |
8881 | } | |
8882 | ||
8883 | return MATCH_YES; | |
8884 | ||
8885 | syntax: | |
8886 | gfc_error ("Syntax error in PROTECTED statement at %C"); | |
8887 | return MATCH_ERROR; | |
8888 | } | |
8889 | ||
8890 | ||
a0527218 | 8891 | /* The PRIVATE statement is a bit weird in that it can be an attribute |
69b1505f | 8892 | declaration, but also works as a standalone statement inside of a |
4ee9c684 | 8893 | type declaration or a module. */ |
8894 | ||
8895 | match | |
1a9745d2 | 8896 | gfc_match_private (gfc_statement *st) |
4ee9c684 | 8897 | { |
8898 | ||
8899 | if (gfc_match ("private") != MATCH_YES) | |
8900 | return MATCH_NO; | |
8901 | ||
e14bee04 | 8902 | if (gfc_current_state () != COMP_MODULE |
7fd88f6e | 8903 | && !(gfc_current_state () == COMP_DERIVED |
8904 | && gfc_state_stack->previous | |
8905 | && gfc_state_stack->previous->state == COMP_MODULE) | |
8906 | && !(gfc_current_state () == COMP_DERIVED_CONTAINS | |
8907 | && gfc_state_stack->previous && gfc_state_stack->previous->previous | |
8908 | && gfc_state_stack->previous->previous->state == COMP_MODULE)) | |
e14bee04 | 8909 | { |
8910 | gfc_error ("PRIVATE statement at %C is only allowed in the " | |
8911 | "specification part of a module"); | |
8912 | return MATCH_ERROR; | |
8913 | } | |
8914 | ||
4ee9c684 | 8915 | if (gfc_current_state () == COMP_DERIVED) |
8916 | { | |
8917 | if (gfc_match_eos () == MATCH_YES) | |
8918 | { | |
8919 | *st = ST_PRIVATE; | |
8920 | return MATCH_YES; | |
8921 | } | |
8922 | ||
8923 | gfc_syntax_error (ST_PRIVATE); | |
8924 | return MATCH_ERROR; | |
8925 | } | |
8926 | ||
8927 | if (gfc_match_eos () == MATCH_YES) | |
8928 | { | |
8929 | *st = ST_PRIVATE; | |
8930 | return MATCH_YES; | |
8931 | } | |
8932 | ||
8933 | *st = ST_ATTR_DECL; | |
8934 | return access_attr_decl (ST_PRIVATE); | |
8935 | } | |
8936 | ||
8937 | ||
8938 | match | |
1a9745d2 | 8939 | gfc_match_public (gfc_statement *st) |
4ee9c684 | 8940 | { |
8941 | ||
8942 | if (gfc_match ("public") != MATCH_YES) | |
8943 | return MATCH_NO; | |
8944 | ||
e14bee04 | 8945 | if (gfc_current_state () != COMP_MODULE) |
8946 | { | |
8947 | gfc_error ("PUBLIC statement at %C is only allowed in the " | |
8948 | "specification part of a module"); | |
8949 | return MATCH_ERROR; | |
8950 | } | |
8951 | ||
4ee9c684 | 8952 | if (gfc_match_eos () == MATCH_YES) |
8953 | { | |
8954 | *st = ST_PUBLIC; | |
8955 | return MATCH_YES; | |
8956 | } | |
8957 | ||
8958 | *st = ST_ATTR_DECL; | |
8959 | return access_attr_decl (ST_PUBLIC); | |
8960 | } | |
8961 | ||
8962 | ||
8963 | /* Workhorse for gfc_match_parameter. */ | |
8964 | ||
8965 | static match | |
8966 | do_parm (void) | |
8967 | { | |
8968 | gfc_symbol *sym; | |
8969 | gfc_expr *init; | |
8970 | match m; | |
60e19868 | 8971 | bool t; |
4ee9c684 | 8972 | |
8973 | m = gfc_match_symbol (&sym, 0); | |
8974 | if (m == MATCH_NO) | |
8975 | gfc_error ("Expected variable name at %C in PARAMETER statement"); | |
8976 | ||
8977 | if (m != MATCH_YES) | |
8978 | return m; | |
8979 | ||
8980 | if (gfc_match_char ('=') == MATCH_NO) | |
8981 | { | |
8982 | gfc_error ("Expected = sign in PARAMETER statement at %C"); | |
8983 | return MATCH_ERROR; | |
8984 | } | |
8985 | ||
8986 | m = gfc_match_init_expr (&init); | |
8987 | if (m == MATCH_NO) | |
8988 | gfc_error ("Expected expression at %C in PARAMETER statement"); | |
8989 | if (m != MATCH_YES) | |
8990 | return m; | |
8991 | ||
8992 | if (sym->ts.type == BT_UNKNOWN | |
60e19868 | 8993 | && !gfc_set_default_type (sym, 1, NULL)) |
4ee9c684 | 8994 | { |
8995 | m = MATCH_ERROR; | |
8996 | goto cleanup; | |
8997 | } | |
8998 | ||
60e19868 | 8999 | if (!gfc_check_assign_symbol (sym, NULL, init) |
9000 | || !gfc_add_flavor (&sym->attr, FL_PARAMETER, sym->name, NULL)) | |
4ee9c684 | 9001 | { |
9002 | m = MATCH_ERROR; | |
9003 | goto cleanup; | |
9004 | } | |
9005 | ||
13aebeb0 | 9006 | if (sym->value) |
9007 | { | |
9008 | gfc_error ("Initializing already initialized variable at %C"); | |
9009 | m = MATCH_ERROR; | |
9010 | goto cleanup; | |
9011 | } | |
9012 | ||
f16404e3 | 9013 | t = add_init_expr_to_sym (sym->name, &init, &gfc_current_locus); |
60e19868 | 9014 | return (t) ? MATCH_YES : MATCH_ERROR; |
4ee9c684 | 9015 | |
9016 | cleanup: | |
9017 | gfc_free_expr (init); | |
9018 | return m; | |
9019 | } | |
9020 | ||
9021 | ||
9022 | /* Match a parameter statement, with the weird syntax that these have. */ | |
9023 | ||
9024 | match | |
9025 | gfc_match_parameter (void) | |
9026 | { | |
2c628787 | 9027 | const char *term = " )%t"; |
4ee9c684 | 9028 | match m; |
9029 | ||
9030 | if (gfc_match_char ('(') == MATCH_NO) | |
2c628787 | 9031 | { |
9032 | /* With legacy PARAMETER statements, don't expect a terminating ')'. */ | |
9033 | if (!gfc_notify_std (GFC_STD_LEGACY, "PARAMETER without '()' at %C")) | |
9034 | return MATCH_NO; | |
9035 | term = " %t"; | |
9036 | } | |
4ee9c684 | 9037 | |
9038 | for (;;) | |
9039 | { | |
9040 | m = do_parm (); | |
9041 | if (m != MATCH_YES) | |
9042 | break; | |
9043 | ||
2c628787 | 9044 | if (gfc_match (term) == MATCH_YES) |
4ee9c684 | 9045 | break; |
9046 | ||
9047 | if (gfc_match_char (',') != MATCH_YES) | |
9048 | { | |
9049 | gfc_error ("Unexpected characters in PARAMETER statement at %C"); | |
9050 | m = MATCH_ERROR; | |
9051 | break; | |
9052 | } | |
9053 | } | |
9054 | ||
9055 | return m; | |
9056 | } | |
9057 | ||
9058 | ||
8e652fcf | 9059 | match |
9060 | gfc_match_automatic (void) | |
9061 | { | |
9062 | gfc_symbol *sym; | |
9063 | match m; | |
9064 | bool seen_symbol = false; | |
9065 | ||
9066 | if (!flag_dec_static) | |
9067 | { | |
841da9cf | 9068 | gfc_error ("%s at %C is a DEC extension, enable with " |
9069 | "%<-fdec-static%>", | |
9070 | "AUTOMATIC" | |
9071 | ); | |
8e652fcf | 9072 | return MATCH_ERROR; |
9073 | } | |
9074 | ||
9075 | gfc_match (" ::"); | |
9076 | ||
9077 | for (;;) | |
9078 | { | |
9079 | m = gfc_match_symbol (&sym, 0); | |
9080 | switch (m) | |
9081 | { | |
9082 | case MATCH_NO: | |
9083 | break; | |
9084 | ||
9085 | case MATCH_ERROR: | |
9086 | return MATCH_ERROR; | |
9087 | ||
9088 | case MATCH_YES: | |
9089 | if (!gfc_add_automatic (&sym->attr, sym->name, &gfc_current_locus)) | |
9090 | return MATCH_ERROR; | |
9091 | seen_symbol = true; | |
9092 | break; | |
9093 | } | |
9094 | ||
9095 | if (gfc_match_eos () == MATCH_YES) | |
9096 | break; | |
9097 | if (gfc_match_char (',') != MATCH_YES) | |
9098 | goto syntax; | |
9099 | } | |
9100 | ||
9101 | if (!seen_symbol) | |
9102 | { | |
9103 | gfc_error ("Expected entity-list in AUTOMATIC statement at %C"); | |
9104 | return MATCH_ERROR; | |
9105 | } | |
9106 | ||
9107 | return MATCH_YES; | |
9108 | ||
9109 | syntax: | |
9110 | gfc_error ("Syntax error in AUTOMATIC statement at %C"); | |
9111 | return MATCH_ERROR; | |
9112 | } | |
9113 | ||
9114 | ||
9115 | match | |
9116 | gfc_match_static (void) | |
9117 | { | |
9118 | gfc_symbol *sym; | |
9119 | match m; | |
9120 | bool seen_symbol = false; | |
9121 | ||
9122 | if (!flag_dec_static) | |
9123 | { | |
841da9cf | 9124 | gfc_error ("%s at %C is a DEC extension, enable with " |
9125 | "%<-fdec-static%>", | |
9126 | "STATIC"); | |
8e652fcf | 9127 | return MATCH_ERROR; |
9128 | } | |
9129 | ||
9130 | gfc_match (" ::"); | |
9131 | ||
9132 | for (;;) | |
9133 | { | |
9134 | m = gfc_match_symbol (&sym, 0); | |
9135 | switch (m) | |
9136 | { | |
9137 | case MATCH_NO: | |
9138 | break; | |
9139 | ||
9140 | case MATCH_ERROR: | |
9141 | return MATCH_ERROR; | |
9142 | ||
9143 | case MATCH_YES: | |
9144 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, | |
9145 | &gfc_current_locus)) | |
9146 | return MATCH_ERROR; | |
9147 | seen_symbol = true; | |
9148 | break; | |
9149 | } | |
9150 | ||
9151 | if (gfc_match_eos () == MATCH_YES) | |
9152 | break; | |
9153 | if (gfc_match_char (',') != MATCH_YES) | |
9154 | goto syntax; | |
9155 | } | |
9156 | ||
9157 | if (!seen_symbol) | |
9158 | { | |
9159 | gfc_error ("Expected entity-list in STATIC statement at %C"); | |
9160 | return MATCH_ERROR; | |
9161 | } | |
9162 | ||
9163 | return MATCH_YES; | |
9164 | ||
9165 | syntax: | |
9166 | gfc_error ("Syntax error in STATIC statement at %C"); | |
9167 | return MATCH_ERROR; | |
9168 | } | |
9169 | ||
9170 | ||
4ee9c684 | 9171 | /* Save statements have a special syntax. */ |
9172 | ||
9173 | match | |
9174 | gfc_match_save (void) | |
9175 | { | |
82f5ee13 | 9176 | char n[GFC_MAX_SYMBOL_LEN+1]; |
9177 | gfc_common_head *c; | |
4ee9c684 | 9178 | gfc_symbol *sym; |
9179 | match m; | |
9180 | ||
9181 | if (gfc_match_eos () == MATCH_YES) | |
9182 | { | |
9183 | if (gfc_current_ns->seen_save) | |
9184 | { | |
60e19868 | 9185 | if (!gfc_notify_std (GFC_STD_LEGACY, "Blanket SAVE statement at %C " |
9186 | "follows previous SAVE statement")) | |
76e82f95 | 9187 | return MATCH_ERROR; |
4ee9c684 | 9188 | } |
9189 | ||
9190 | gfc_current_ns->save_all = gfc_current_ns->seen_save = 1; | |
9191 | return MATCH_YES; | |
9192 | } | |
9193 | ||
9194 | if (gfc_current_ns->save_all) | |
9195 | { | |
60e19868 | 9196 | if (!gfc_notify_std (GFC_STD_LEGACY, "SAVE statement at %C follows " |
9197 | "blanket SAVE statement")) | |
76e82f95 | 9198 | return MATCH_ERROR; |
4ee9c684 | 9199 | } |
9200 | ||
9201 | gfc_match (" ::"); | |
9202 | ||
9203 | for (;;) | |
9204 | { | |
9205 | m = gfc_match_symbol (&sym, 0); | |
9206 | switch (m) | |
9207 | { | |
9208 | case MATCH_YES: | |
76e207a9 | 9209 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, |
60e19868 | 9210 | &gfc_current_locus)) |
4ee9c684 | 9211 | return MATCH_ERROR; |
9212 | goto next_item; | |
9213 | ||
9214 | case MATCH_NO: | |
9215 | break; | |
9216 | ||
9217 | case MATCH_ERROR: | |
9218 | return MATCH_ERROR; | |
9219 | } | |
9220 | ||
82f5ee13 | 9221 | m = gfc_match (" / %n /", &n); |
4ee9c684 | 9222 | if (m == MATCH_ERROR) |
9223 | return MATCH_ERROR; | |
9224 | if (m == MATCH_NO) | |
9225 | goto syntax; | |
9226 | ||
403ddc45 | 9227 | c = gfc_get_common (n, 0); |
82f5ee13 | 9228 | c->saved = 1; |
9229 | ||
4ee9c684 | 9230 | gfc_current_ns->seen_save = 1; |
9231 | ||
9232 | next_item: | |
9233 | if (gfc_match_eos () == MATCH_YES) | |
9234 | break; | |
9235 | if (gfc_match_char (',') != MATCH_YES) | |
9236 | goto syntax; | |
9237 | } | |
9238 | ||
9239 | return MATCH_YES; | |
9240 | ||
9241 | syntax: | |
9242 | gfc_error ("Syntax error in SAVE statement at %C"); | |
9243 | return MATCH_ERROR; | |
9244 | } | |
9245 | ||
9246 | ||
8f6339b6 | 9247 | match |
9248 | gfc_match_value (void) | |
9249 | { | |
9250 | gfc_symbol *sym; | |
9251 | match m; | |
9252 | ||
6a7084d7 | 9253 | /* This is not allowed within a BLOCK construct! */ |
9254 | if (gfc_current_state () == COMP_BLOCK) | |
9255 | { | |
9256 | gfc_error ("VALUE is not allowed inside of BLOCK at %C"); | |
9257 | return MATCH_ERROR; | |
9258 | } | |
9259 | ||
60e19868 | 9260 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE statement at %C")) |
8f6339b6 | 9261 | return MATCH_ERROR; |
9262 | ||
9263 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9264 | { | |
9265 | return MATCH_ERROR; | |
9266 | } | |
9267 | ||
9268 | if (gfc_match_eos () == MATCH_YES) | |
9269 | goto syntax; | |
9270 | ||
9271 | for(;;) | |
9272 | { | |
9273 | m = gfc_match_symbol (&sym, 0); | |
9274 | switch (m) | |
9275 | { | |
9276 | case MATCH_YES: | |
60e19868 | 9277 | if (!gfc_add_value (&sym->attr, sym->name, &gfc_current_locus)) |
8f6339b6 | 9278 | return MATCH_ERROR; |
9279 | goto next_item; | |
9280 | ||
9281 | case MATCH_NO: | |
9282 | break; | |
9283 | ||
9284 | case MATCH_ERROR: | |
9285 | return MATCH_ERROR; | |
9286 | } | |
9287 | ||
9288 | next_item: | |
9289 | if (gfc_match_eos () == MATCH_YES) | |
9290 | break; | |
9291 | if (gfc_match_char (',') != MATCH_YES) | |
9292 | goto syntax; | |
9293 | } | |
9294 | ||
9295 | return MATCH_YES; | |
9296 | ||
9297 | syntax: | |
9298 | gfc_error ("Syntax error in VALUE statement at %C"); | |
9299 | return MATCH_ERROR; | |
9300 | } | |
9301 | ||
f6d0e37a | 9302 | |
ef814c81 | 9303 | match |
9304 | gfc_match_volatile (void) | |
9305 | { | |
9306 | gfc_symbol *sym; | |
2c6ca8fc | 9307 | char *name; |
ef814c81 | 9308 | match m; |
9309 | ||
60e19868 | 9310 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE statement at %C")) |
ef814c81 | 9311 | return MATCH_ERROR; |
9312 | ||
9313 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9314 | { | |
9315 | return MATCH_ERROR; | |
9316 | } | |
9317 | ||
9318 | if (gfc_match_eos () == MATCH_YES) | |
9319 | goto syntax; | |
9320 | ||
9321 | for(;;) | |
9322 | { | |
8db94b3b | 9323 | /* VOLATILE is special because it can be added to host-associated |
293d72e0 | 9324 | symbols locally. Except for coarrays. */ |
2f241857 | 9325 | m = gfc_match_symbol (&sym, 1); |
ef814c81 | 9326 | switch (m) |
9327 | { | |
9328 | case MATCH_YES: | |
2c6ca8fc | 9329 | name = XCNEWVAR (char, strlen (sym->name) + 1); |
9330 | strcpy (name, sym->name); | |
9331 | if (!check_function_name (name)) | |
9332 | return MATCH_ERROR; | |
aff518b0 | 9333 | /* F2008, C560+C561. VOLATILE for host-/use-associated variable or |
9334 | for variable in a BLOCK which is defined outside of the BLOCK. */ | |
9335 | if (sym->ns != gfc_current_ns && sym->attr.codimension) | |
9336 | { | |
716da296 | 9337 | gfc_error ("Specifying VOLATILE for coarray variable %qs at " |
aff518b0 | 9338 | "%C, which is use-/host-associated", sym->name); |
9339 | return MATCH_ERROR; | |
9340 | } | |
60e19868 | 9341 | if (!gfc_add_volatile (&sym->attr, sym->name, &gfc_current_locus)) |
ef814c81 | 9342 | return MATCH_ERROR; |
9343 | goto next_item; | |
9344 | ||
9345 | case MATCH_NO: | |
9346 | break; | |
9347 | ||
9348 | case MATCH_ERROR: | |
9349 | return MATCH_ERROR; | |
9350 | } | |
9351 | ||
9352 | next_item: | |
9353 | if (gfc_match_eos () == MATCH_YES) | |
9354 | break; | |
9355 | if (gfc_match_char (',') != MATCH_YES) | |
9356 | goto syntax; | |
9357 | } | |
9358 | ||
9359 | return MATCH_YES; | |
9360 | ||
9361 | syntax: | |
9362 | gfc_error ("Syntax error in VOLATILE statement at %C"); | |
9363 | return MATCH_ERROR; | |
9364 | } | |
9365 | ||
9366 | ||
738928be | 9367 | match |
9368 | gfc_match_asynchronous (void) | |
9369 | { | |
9370 | gfc_symbol *sym; | |
2c6ca8fc | 9371 | char *name; |
738928be | 9372 | match m; |
9373 | ||
60e19868 | 9374 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS statement at %C")) |
738928be | 9375 | return MATCH_ERROR; |
9376 | ||
9377 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9378 | { | |
9379 | return MATCH_ERROR; | |
9380 | } | |
9381 | ||
9382 | if (gfc_match_eos () == MATCH_YES) | |
9383 | goto syntax; | |
9384 | ||
9385 | for(;;) | |
9386 | { | |
8db94b3b | 9387 | /* ASYNCHRONOUS is special because it can be added to host-associated |
738928be | 9388 | symbols locally. */ |
9389 | m = gfc_match_symbol (&sym, 1); | |
9390 | switch (m) | |
9391 | { | |
9392 | case MATCH_YES: | |
2c6ca8fc | 9393 | name = XCNEWVAR (char, strlen (sym->name) + 1); |
9394 | strcpy (name, sym->name); | |
9395 | if (!check_function_name (name)) | |
9396 | return MATCH_ERROR; | |
60e19868 | 9397 | if (!gfc_add_asynchronous (&sym->attr, sym->name, &gfc_current_locus)) |
738928be | 9398 | return MATCH_ERROR; |
9399 | goto next_item; | |
9400 | ||
9401 | case MATCH_NO: | |
9402 | break; | |
9403 | ||
9404 | case MATCH_ERROR: | |
9405 | return MATCH_ERROR; | |
9406 | } | |
9407 | ||
9408 | next_item: | |
9409 | if (gfc_match_eos () == MATCH_YES) | |
9410 | break; | |
9411 | if (gfc_match_char (',') != MATCH_YES) | |
9412 | goto syntax; | |
9413 | } | |
9414 | ||
9415 | return MATCH_YES; | |
9416 | ||
9417 | syntax: | |
9418 | gfc_error ("Syntax error in ASYNCHRONOUS statement at %C"); | |
9419 | return MATCH_ERROR; | |
9420 | } | |
9421 | ||
9422 | ||
4b8eb6ca | 9423 | /* Match a module procedure statement in a submodule. */ |
9424 | ||
9425 | match | |
9426 | gfc_match_submod_proc (void) | |
9427 | { | |
9428 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9429 | gfc_symbol *sym, *fsym; | |
9430 | match m; | |
9431 | gfc_formal_arglist *formal, *head, *tail; | |
9432 | ||
9433 | if (gfc_current_state () != COMP_CONTAINS | |
9434 | || !(gfc_state_stack->previous | |
76e207a9 | 9435 | && (gfc_state_stack->previous->state == COMP_SUBMODULE |
9436 | || gfc_state_stack->previous->state == COMP_MODULE))) | |
4b8eb6ca | 9437 | return MATCH_NO; |
9438 | ||
9439 | m = gfc_match (" module% procedure% %n", name); | |
9440 | if (m != MATCH_YES) | |
9441 | return m; | |
9442 | ||
9443 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE PROCEDURE declaration " | |
9444 | "at %C")) | |
9445 | return MATCH_ERROR; | |
9446 | ||
9447 | if (get_proc_name (name, &sym, false)) | |
9448 | return MATCH_ERROR; | |
9449 | ||
9450 | /* Make sure that the result field is appropriately filled, even though | |
9451 | the result symbol will be replaced later on. */ | |
dee7f6d1 | 9452 | if (sym->tlink && sym->tlink->attr.function) |
4b8eb6ca | 9453 | { |
dee7f6d1 | 9454 | if (sym->tlink->result |
9455 | && sym->tlink->result != sym->tlink) | |
9456 | sym->result= sym->tlink->result; | |
4b8eb6ca | 9457 | else |
9458 | sym->result = sym; | |
9459 | } | |
9460 | ||
9461 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if | |
9462 | the symbol existed before. */ | |
9463 | sym->declared_at = gfc_current_locus; | |
9464 | ||
9465 | if (!sym->attr.module_procedure) | |
9466 | return MATCH_ERROR; | |
9467 | ||
9468 | /* Signal match_end to expect "end procedure". */ | |
9469 | sym->abr_modproc_decl = 1; | |
9470 | ||
9471 | /* Change from IFSRC_IFBODY coming from the interface declaration. */ | |
9472 | sym->attr.if_source = IFSRC_DECL; | |
9473 | ||
9474 | gfc_new_block = sym; | |
9475 | ||
9476 | /* Make a new formal arglist with the symbols in the procedure | |
9477 | namespace. */ | |
9478 | head = tail = NULL; | |
9479 | for (formal = sym->formal; formal && formal->sym; formal = formal->next) | |
9480 | { | |
9481 | if (formal == sym->formal) | |
9482 | head = tail = gfc_get_formal_arglist (); | |
9483 | else | |
9484 | { | |
9485 | tail->next = gfc_get_formal_arglist (); | |
9486 | tail = tail->next; | |
9487 | } | |
9488 | ||
9489 | if (gfc_copy_dummy_sym (&fsym, formal->sym, 0)) | |
9490 | goto cleanup; | |
9491 | ||
9492 | tail->sym = fsym; | |
9493 | gfc_set_sym_referenced (fsym); | |
9494 | } | |
9495 | ||
9496 | /* The dummy symbols get cleaned up, when the formal_namespace of the | |
9497 | interface declaration is cleared. This allows us to add the | |
9498 | explicit interface as is done for other type of procedure. */ | |
9499 | if (!gfc_add_explicit_interface (sym, IFSRC_DECL, head, | |
9500 | &gfc_current_locus)) | |
9501 | return MATCH_ERROR; | |
9502 | ||
9503 | if (gfc_match_eos () != MATCH_YES) | |
9504 | { | |
9505 | gfc_syntax_error (ST_MODULE_PROC); | |
9506 | return MATCH_ERROR; | |
9507 | } | |
9508 | ||
9509 | return MATCH_YES; | |
9510 | ||
9511 | cleanup: | |
9512 | gfc_free_formal_arglist (head); | |
9513 | return MATCH_ERROR; | |
9514 | } | |
9515 | ||
9516 | ||
4ee9c684 | 9517 | /* Match a module procedure statement. Note that we have to modify |
9518 | symbols in the parent's namespace because the current one was there | |
89d91d02 | 9519 | to receive symbols that are in an interface's formal argument list. */ |
4ee9c684 | 9520 | |
9521 | match | |
9522 | gfc_match_modproc (void) | |
9523 | { | |
9524 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9525 | gfc_symbol *sym; | |
9526 | match m; | |
d920fb76 | 9527 | locus old_locus; |
63d42079 | 9528 | gfc_namespace *module_ns; |
94ce9f74 | 9529 | gfc_interface *old_interface_head, *interface; |
4ee9c684 | 9530 | |
9531 | if (gfc_state_stack->state != COMP_INTERFACE | |
9532 | || gfc_state_stack->previous == NULL | |
5cf92482 | 9533 | || current_interface.type == INTERFACE_NAMELESS |
9534 | || current_interface.type == INTERFACE_ABSTRACT) | |
4ee9c684 | 9535 | { |
1a9745d2 | 9536 | gfc_error ("MODULE PROCEDURE at %C must be in a generic module " |
9537 | "interface"); | |
4ee9c684 | 9538 | return MATCH_ERROR; |
9539 | } | |
9540 | ||
63d42079 | 9541 | module_ns = gfc_current_ns->parent; |
9542 | for (; module_ns; module_ns = module_ns->parent) | |
15ca3865 | 9543 | if (module_ns->proc_name->attr.flavor == FL_MODULE |
9544 | || module_ns->proc_name->attr.flavor == FL_PROGRAM | |
9545 | || (module_ns->proc_name->attr.flavor == FL_PROCEDURE | |
9546 | && !module_ns->proc_name->attr.contained)) | |
63d42079 | 9547 | break; |
9548 | ||
9549 | if (module_ns == NULL) | |
9550 | return MATCH_ERROR; | |
9551 | ||
94ce9f74 | 9552 | /* Store the current state of the interface. We will need it if we |
9553 | end up with a syntax error and need to recover. */ | |
9554 | old_interface_head = gfc_current_interface_head (); | |
9555 | ||
d920fb76 | 9556 | /* Check if the F2008 optional double colon appears. */ |
9557 | gfc_gobble_whitespace (); | |
9558 | old_locus = gfc_current_locus; | |
9559 | if (gfc_match ("::") == MATCH_YES) | |
9560 | { | |
60e19868 | 9561 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
9562 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
d920fb76 | 9563 | return MATCH_ERROR; |
9564 | } | |
9565 | else | |
9566 | gfc_current_locus = old_locus; | |
8db94b3b | 9567 | |
4ee9c684 | 9568 | for (;;) |
9569 | { | |
94ce9f74 | 9570 | bool last = false; |
d920fb76 | 9571 | old_locus = gfc_current_locus; |
94ce9f74 | 9572 | |
4ee9c684 | 9573 | m = gfc_match_name (name); |
9574 | if (m == MATCH_NO) | |
9575 | goto syntax; | |
9576 | if (m != MATCH_YES) | |
9577 | return MATCH_ERROR; | |
9578 | ||
94ce9f74 | 9579 | /* Check for syntax error before starting to add symbols to the |
9580 | current namespace. */ | |
9581 | if (gfc_match_eos () == MATCH_YES) | |
9582 | last = true; | |
d920fb76 | 9583 | |
94ce9f74 | 9584 | if (!last && gfc_match_char (',') != MATCH_YES) |
9585 | goto syntax; | |
9586 | ||
9587 | /* Now we're sure the syntax is valid, we process this item | |
9588 | further. */ | |
63d42079 | 9589 | if (gfc_get_symbol (name, module_ns, &sym)) |
4ee9c684 | 9590 | return MATCH_ERROR; |
9591 | ||
15ca3865 | 9592 | if (sym->attr.intrinsic) |
9593 | { | |
9594 | gfc_error ("Intrinsic procedure at %L cannot be a MODULE " | |
9595 | "PROCEDURE", &old_locus); | |
9596 | return MATCH_ERROR; | |
9597 | } | |
9598 | ||
4ee9c684 | 9599 | if (sym->attr.proc != PROC_MODULE |
60e19868 | 9600 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
4ee9c684 | 9601 | return MATCH_ERROR; |
9602 | ||
60e19868 | 9603 | if (!gfc_add_interface (sym)) |
4ee9c684 | 9604 | return MATCH_ERROR; |
9605 | ||
3186f695 | 9606 | sym->attr.mod_proc = 1; |
15ca3865 | 9607 | sym->declared_at = old_locus; |
3186f695 | 9608 | |
94ce9f74 | 9609 | if (last) |
4ee9c684 | 9610 | break; |
4ee9c684 | 9611 | } |
9612 | ||
9613 | return MATCH_YES; | |
9614 | ||
9615 | syntax: | |
94ce9f74 | 9616 | /* Restore the previous state of the interface. */ |
9617 | interface = gfc_current_interface_head (); | |
9618 | gfc_set_current_interface_head (old_interface_head); | |
9619 | ||
9620 | /* Free the new interfaces. */ | |
9621 | while (interface != old_interface_head) | |
9622 | { | |
9623 | gfc_interface *i = interface->next; | |
434f0922 | 9624 | free (interface); |
94ce9f74 | 9625 | interface = i; |
9626 | } | |
9627 | ||
9628 | /* And issue a syntax error. */ | |
4ee9c684 | 9629 | gfc_syntax_error (ST_MODULE_PROC); |
9630 | return MATCH_ERROR; | |
9631 | } | |
9632 | ||
9633 | ||
ea94d76d | 9634 | /* Check a derived type that is being extended. */ |
7a99bc9b | 9635 | |
ea94d76d | 9636 | static gfc_symbol* |
9637 | check_extended_derived_type (char *name) | |
9638 | { | |
9639 | gfc_symbol *extended; | |
9640 | ||
9641 | if (gfc_find_symbol (name, gfc_current_ns, 1, &extended)) | |
9642 | { | |
9643 | gfc_error ("Ambiguous symbol in TYPE definition at %C"); | |
9644 | return NULL; | |
9645 | } | |
9646 | ||
7a99bc9b | 9647 | extended = gfc_find_dt_in_generic (extended); |
9648 | ||
9649 | /* F08:C428. */ | |
ea94d76d | 9650 | if (!extended) |
9651 | { | |
716da296 | 9652 | gfc_error ("Symbol %qs at %C has not been previously defined", name); |
ea94d76d | 9653 | return NULL; |
9654 | } | |
9655 | ||
9656 | if (extended->attr.flavor != FL_DERIVED) | |
9657 | { | |
716da296 | 9658 | gfc_error ("%qs in EXTENDS expression at %C is not a " |
ea94d76d | 9659 | "derived type", name); |
9660 | return NULL; | |
9661 | } | |
9662 | ||
9663 | if (extended->attr.is_bind_c) | |
9664 | { | |
716da296 | 9665 | gfc_error ("%qs cannot be extended at %C because it " |
ea94d76d | 9666 | "is BIND(C)", extended->name); |
9667 | return NULL; | |
9668 | } | |
9669 | ||
9670 | if (extended->attr.sequence) | |
9671 | { | |
716da296 | 9672 | gfc_error ("%qs cannot be extended at %C because it " |
ea94d76d | 9673 | "is a SEQUENCE type", extended->name); |
9674 | return NULL; | |
9675 | } | |
9676 | ||
9677 | return extended; | |
9678 | } | |
9679 | ||
9680 | ||
c5d33754 | 9681 | /* Match the optional attribute specifiers for a type declaration. |
9682 | Return MATCH_ERROR if an error is encountered in one of the handled | |
9683 | attributes (public, private, bind(c)), MATCH_NO if what's found is | |
9684 | not a handled attribute, and MATCH_YES otherwise. TODO: More error | |
9685 | checking on attribute conflicts needs to be done. */ | |
4ee9c684 | 9686 | |
9687 | match | |
ea94d76d | 9688 | gfc_get_type_attr_spec (symbol_attribute *attr, char *name) |
4ee9c684 | 9689 | { |
c5d33754 | 9690 | /* See if the derived type is marked as private. */ |
4ee9c684 | 9691 | if (gfc_match (" , private") == MATCH_YES) |
9692 | { | |
e14bee04 | 9693 | if (gfc_current_state () != COMP_MODULE) |
4ee9c684 | 9694 | { |
e14bee04 | 9695 | gfc_error ("Derived type at %C can only be PRIVATE in the " |
9696 | "specification part of a module"); | |
4ee9c684 | 9697 | return MATCH_ERROR; |
9698 | } | |
9699 | ||
60e19868 | 9700 | if (!gfc_add_access (attr, ACCESS_PRIVATE, NULL, NULL)) |
4ee9c684 | 9701 | return MATCH_ERROR; |
4ee9c684 | 9702 | } |
c5d33754 | 9703 | else if (gfc_match (" , public") == MATCH_YES) |
4ee9c684 | 9704 | { |
e14bee04 | 9705 | if (gfc_current_state () != COMP_MODULE) |
4ee9c684 | 9706 | { |
e14bee04 | 9707 | gfc_error ("Derived type at %C can only be PUBLIC in the " |
9708 | "specification part of a module"); | |
4ee9c684 | 9709 | return MATCH_ERROR; |
9710 | } | |
9711 | ||
60e19868 | 9712 | if (!gfc_add_access (attr, ACCESS_PUBLIC, NULL, NULL)) |
4ee9c684 | 9713 | return MATCH_ERROR; |
4ee9c684 | 9714 | } |
ac5f2650 | 9715 | else if (gfc_match (" , bind ( c )") == MATCH_YES) |
c5d33754 | 9716 | { |
9717 | /* If the type is defined to be bind(c) it then needs to make | |
9718 | sure that all fields are interoperable. This will | |
9719 | need to be a semantic check on the finished derived type. | |
9720 | See 15.2.3 (lines 9-12) of F2003 draft. */ | |
60e19868 | 9721 | if (!gfc_add_is_bind_c (attr, NULL, &gfc_current_locus, 0)) |
c5d33754 | 9722 | return MATCH_ERROR; |
9723 | ||
9724 | /* TODO: attr conflicts need to be checked, probably in symbol.c. */ | |
9725 | } | |
ac5f2650 | 9726 | else if (gfc_match (" , abstract") == MATCH_YES) |
9727 | { | |
60e19868 | 9728 | if (!gfc_notify_std (GFC_STD_F2003, "ABSTRACT type at %C")) |
ac5f2650 | 9729 | return MATCH_ERROR; |
9730 | ||
60e19868 | 9731 | if (!gfc_add_abstract (attr, &gfc_current_locus)) |
ac5f2650 | 9732 | return MATCH_ERROR; |
9733 | } | |
60e19868 | 9734 | else if (name && gfc_match (" , extends ( %n )", name) == MATCH_YES) |
ea94d76d | 9735 | { |
60e19868 | 9736 | if (!gfc_add_extension (attr, &gfc_current_locus)) |
ea94d76d | 9737 | return MATCH_ERROR; |
9738 | } | |
c5d33754 | 9739 | else |
9740 | return MATCH_NO; | |
9741 | ||
9742 | /* If we get here, something matched. */ | |
9743 | return MATCH_YES; | |
9744 | } | |
9745 | ||
9746 | ||
d7cd448a | 9747 | /* Common function for type declaration blocks similar to derived types, such |
9748 | as STRUCTURES and MAPs. Unlike derived types, a structure type | |
9749 | does NOT have a generic symbol matching the name given by the user. | |
9750 | STRUCTUREs can share names with variables and PARAMETERs so we must allow | |
9751 | for the creation of an independent symbol. | |
7d7125df | 9752 | Other parameters are a message to prefix errors with, the name of the new |
d7cd448a | 9753 | type to be created, and the flavor to add to the resulting symbol. */ |
9754 | ||
9755 | static bool | |
9756 | get_struct_decl (const char *name, sym_flavor fl, locus *decl, | |
9757 | gfc_symbol **result) | |
9758 | { | |
9759 | gfc_symbol *sym; | |
9760 | locus where; | |
9761 | ||
9762 | gcc_assert (name[0] == (char) TOUPPER (name[0])); | |
9763 | ||
9764 | if (decl) | |
9765 | where = *decl; | |
9766 | else | |
9767 | where = gfc_current_locus; | |
9768 | ||
9769 | if (gfc_get_symbol (name, NULL, &sym)) | |
9770 | return false; | |
9771 | ||
9772 | if (!sym) | |
9773 | { | |
9774 | gfc_internal_error ("Failed to create structure type '%s' at %C", name); | |
9775 | return false; | |
9776 | } | |
9777 | ||
9778 | if (sym->components != NULL || sym->attr.zero_comp) | |
9779 | { | |
1b7008c4 | 9780 | gfc_error ("Type definition of %qs at %C was already defined at %L", |
d7cd448a | 9781 | sym->name, &sym->declared_at); |
9782 | return false; | |
9783 | } | |
9784 | ||
9785 | sym->declared_at = where; | |
9786 | ||
9787 | if (sym->attr.flavor != fl | |
9788 | && !gfc_add_flavor (&sym->attr, fl, sym->name, NULL)) | |
9789 | return false; | |
9790 | ||
9791 | if (!sym->hash_value) | |
9792 | /* Set the hash for the compound name for this type. */ | |
9793 | sym->hash_value = gfc_hash_value (sym); | |
9794 | ||
9795 | /* Normally the type is expected to have been completely parsed by the time | |
9796 | a field declaration with this type is seen. For unions, maps, and nested | |
9797 | structure declarations, we need to indicate that it is okay that we | |
9798 | haven't seen any components yet. This will be updated after the structure | |
9799 | is fully parsed. */ | |
9800 | sym->attr.zero_comp = 0; | |
9801 | ||
9802 | /* Structures always act like derived-types with the SEQUENCE attribute */ | |
9803 | gfc_add_sequence (&sym->attr, sym->name, NULL); | |
9804 | ||
9805 | if (result) *result = sym; | |
9806 | ||
9807 | return true; | |
9808 | } | |
9809 | ||
9810 | ||
9811 | /* Match the opening of a MAP block. Like a struct within a union in C; | |
9812 | behaves identical to STRUCTURE blocks. */ | |
9813 | ||
9814 | match | |
9815 | gfc_match_map (void) | |
9816 | { | |
ac1739da | 9817 | /* Counter used to give unique internal names to map structures. */ |
9818 | static unsigned int gfc_map_id = 0; | |
9819 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9820 | gfc_symbol *sym; | |
9821 | locus old_loc; | |
d7cd448a | 9822 | |
ac1739da | 9823 | old_loc = gfc_current_locus; |
d7cd448a | 9824 | |
ac1739da | 9825 | if (gfc_match_eos () != MATCH_YES) |
9826 | { | |
9827 | gfc_error ("Junk after MAP statement at %C"); | |
9828 | gfc_current_locus = old_loc; | |
9829 | return MATCH_ERROR; | |
9830 | } | |
d7cd448a | 9831 | |
ac1739da | 9832 | /* Map blocks are anonymous so we make up unique names for the symbol table |
9833 | which are invalid Fortran identifiers. */ | |
9834 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "MM$%u", gfc_map_id++); | |
d7cd448a | 9835 | |
ac1739da | 9836 | if (!get_struct_decl (name, FL_STRUCT, &old_loc, &sym)) |
9837 | return MATCH_ERROR; | |
d7cd448a | 9838 | |
ac1739da | 9839 | gfc_new_block = sym; |
d7cd448a | 9840 | |
ac1739da | 9841 | return MATCH_YES; |
d7cd448a | 9842 | } |
9843 | ||
9844 | ||
9845 | /* Match the opening of a UNION block. */ | |
9846 | ||
9847 | match | |
9848 | gfc_match_union (void) | |
9849 | { | |
ac1739da | 9850 | /* Counter used to give unique internal names to union types. */ |
9851 | static unsigned int gfc_union_id = 0; | |
9852 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9853 | gfc_symbol *sym; | |
9854 | locus old_loc; | |
d7cd448a | 9855 | |
ac1739da | 9856 | old_loc = gfc_current_locus; |
d7cd448a | 9857 | |
ac1739da | 9858 | if (gfc_match_eos () != MATCH_YES) |
9859 | { | |
9860 | gfc_error ("Junk after UNION statement at %C"); | |
9861 | gfc_current_locus = old_loc; | |
9862 | return MATCH_ERROR; | |
9863 | } | |
d7cd448a | 9864 | |
ac1739da | 9865 | /* Unions are anonymous so we make up unique names for the symbol table |
9866 | which are invalid Fortran identifiers. */ | |
9867 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "UU$%u", gfc_union_id++); | |
d7cd448a | 9868 | |
ac1739da | 9869 | if (!get_struct_decl (name, FL_UNION, &old_loc, &sym)) |
9870 | return MATCH_ERROR; | |
d7cd448a | 9871 | |
ac1739da | 9872 | gfc_new_block = sym; |
d7cd448a | 9873 | |
ac1739da | 9874 | return MATCH_YES; |
d7cd448a | 9875 | } |
9876 | ||
9877 | ||
9878 | /* Match the beginning of a STRUCTURE declaration. This is similar to | |
9879 | matching the beginning of a derived type declaration with a few | |
9880 | twists. The resulting type symbol has no access control or other | |
9881 | interesting attributes. */ | |
9882 | ||
9883 | match | |
9884 | gfc_match_structure_decl (void) | |
9885 | { | |
ac1739da | 9886 | /* Counter used to give unique internal names to anonymous structures. */ |
9887 | static unsigned int gfc_structure_id = 0; | |
9888 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9889 | gfc_symbol *sym; | |
9890 | match m; | |
9891 | locus where; | |
d7cd448a | 9892 | |
ac1739da | 9893 | if (!flag_dec_structure) |
9894 | { | |
841da9cf | 9895 | gfc_error ("%s at %C is a DEC extension, enable with " |
9896 | "%<-fdec-structure%>", | |
9897 | "STRUCTURE"); | |
ac1739da | 9898 | return MATCH_ERROR; |
9899 | } | |
d7cd448a | 9900 | |
ac1739da | 9901 | name[0] = '\0'; |
d7cd448a | 9902 | |
ac1739da | 9903 | m = gfc_match (" /%n/", name); |
9904 | if (m != MATCH_YES) | |
9905 | { | |
9906 | /* Non-nested structure declarations require a structure name. */ | |
9907 | if (!gfc_comp_struct (gfc_current_state ())) | |
9908 | { | |
9909 | gfc_error ("Structure name expected in non-nested structure " | |
9910 | "declaration at %C"); | |
9911 | return MATCH_ERROR; | |
9912 | } | |
9913 | /* This is an anonymous structure; make up a unique name for it | |
9914 | (upper-case letters never make it to symbol names from the source). | |
9915 | The important thing is initializing the type variable | |
9916 | and setting gfc_new_symbol, which is immediately used by | |
9917 | parse_structure () and variable_decl () to add components of | |
9918 | this type. */ | |
9919 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "SS$%u", gfc_structure_id++); | |
9920 | } | |
d7cd448a | 9921 | |
ac1739da | 9922 | where = gfc_current_locus; |
9923 | /* No field list allowed after non-nested structure declaration. */ | |
9924 | if (!gfc_comp_struct (gfc_current_state ()) | |
9925 | && gfc_match_eos () != MATCH_YES) | |
9926 | { | |
9927 | gfc_error ("Junk after non-nested STRUCTURE statement at %C"); | |
9928 | return MATCH_ERROR; | |
9929 | } | |
d7cd448a | 9930 | |
ac1739da | 9931 | /* Make sure the name is not the name of an intrinsic type. */ |
9932 | if (gfc_is_intrinsic_typename (name)) | |
9933 | { | |
1b7008c4 | 9934 | gfc_error ("Structure name %qs at %C cannot be the same as an" |
ac1739da | 9935 | " intrinsic type", name); |
9936 | return MATCH_ERROR; | |
9937 | } | |
d7cd448a | 9938 | |
ac1739da | 9939 | /* Store the actual type symbol for the structure with an upper-case first |
9940 | letter (an invalid Fortran identifier). */ | |
d7cd448a | 9941 | |
dc326dc0 | 9942 | if (!get_struct_decl (gfc_dt_upper_string (name), FL_STRUCT, &where, &sym)) |
ac1739da | 9943 | return MATCH_ERROR; |
d7cd448a | 9944 | |
ac1739da | 9945 | gfc_new_block = sym; |
9946 | return MATCH_YES; | |
d7cd448a | 9947 | } |
9948 | ||
006943e8 | 9949 | |
9950 | /* This function does some work to determine which matcher should be used to | |
80ed743c | 9951 | * match a statement beginning with "TYPE". This is used to disambiguate TYPE |
006943e8 | 9952 | * as an alias for PRINT from derived type declarations, TYPE IS statements, |
80ed743c | 9953 | * and [parameterized] derived type declarations. */ |
006943e8 | 9954 | |
9955 | match | |
9956 | gfc_match_type (gfc_statement *st) | |
9957 | { | |
9958 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9959 | match m; | |
9960 | locus old_loc; | |
9961 | ||
9962 | /* Requires -fdec. */ | |
9963 | if (!flag_dec) | |
9964 | return MATCH_NO; | |
9965 | ||
9966 | m = gfc_match ("type"); | |
9967 | if (m != MATCH_YES) | |
9968 | return m; | |
9969 | /* If we already have an error in the buffer, it is probably from failing to | |
9970 | * match a derived type data declaration. Let it happen. */ | |
9971 | else if (gfc_error_flag_test ()) | |
9972 | return MATCH_NO; | |
9973 | ||
9974 | old_loc = gfc_current_locus; | |
9975 | *st = ST_NONE; | |
9976 | ||
9977 | /* If we see an attribute list before anything else it's definitely a derived | |
9978 | * type declaration. */ | |
9979 | if (gfc_match (" ,") == MATCH_YES || gfc_match (" ::") == MATCH_YES) | |
80ed743c | 9980 | goto derived; |
006943e8 | 9981 | |
9982 | /* By now "TYPE" has already been matched. If we do not see a name, this may | |
9983 | * be something like "TYPE *" or "TYPE <fmt>". */ | |
9984 | m = gfc_match_name (name); | |
9985 | if (m != MATCH_YES) | |
9986 | { | |
9987 | /* Let print match if it can, otherwise throw an error from | |
9988 | * gfc_match_derived_decl. */ | |
9989 | gfc_current_locus = old_loc; | |
9990 | if (gfc_match_print () == MATCH_YES) | |
9991 | { | |
9992 | *st = ST_WRITE; | |
9993 | return MATCH_YES; | |
9994 | } | |
80ed743c | 9995 | goto derived; |
006943e8 | 9996 | } |
9997 | ||
80ed743c | 9998 | /* Check for EOS. */ |
9999 | if (gfc_match_eos () == MATCH_YES) | |
006943e8 | 10000 | { |
10001 | /* By now we have "TYPE <name> <EOS>". Check first if the name is an | |
10002 | * intrinsic typename - if so let gfc_match_derived_decl dump an error. | |
10003 | * Otherwise if gfc_match_derived_decl fails it's probably an existing | |
10004 | * symbol which can be printed. */ | |
10005 | gfc_current_locus = old_loc; | |
10006 | m = gfc_match_derived_decl (); | |
10007 | if (gfc_is_intrinsic_typename (name) || m == MATCH_YES) | |
10008 | { | |
10009 | *st = ST_DERIVED_DECL; | |
10010 | return m; | |
10011 | } | |
006943e8 | 10012 | } |
80ed743c | 10013 | else |
10014 | { | |
10015 | /* Here we have "TYPE <name>". Check for <TYPE IS (> or a PDT declaration | |
10016 | like <type name(parameter)>. */ | |
10017 | gfc_gobble_whitespace (); | |
10018 | bool paren = gfc_peek_ascii_char () == '('; | |
10019 | if (paren) | |
10020 | { | |
10021 | if (strcmp ("is", name) == 0) | |
10022 | goto typeis; | |
10023 | else | |
10024 | goto derived; | |
10025 | } | |
10026 | } | |
10027 | ||
10028 | /* Treat TYPE... like PRINT... */ | |
10029 | gfc_current_locus = old_loc; | |
10030 | *st = ST_WRITE; | |
10031 | return gfc_match_print (); | |
006943e8 | 10032 | |
80ed743c | 10033 | derived: |
10034 | gfc_current_locus = old_loc; | |
10035 | *st = ST_DERIVED_DECL; | |
10036 | return gfc_match_derived_decl (); | |
10037 | ||
10038 | typeis: | |
10039 | gfc_current_locus = old_loc; | |
10040 | *st = ST_TYPE_IS; | |
10041 | return gfc_match_type_is (); | |
006943e8 | 10042 | } |
10043 | ||
10044 | ||
c5d33754 | 10045 | /* Match the beginning of a derived type declaration. If a type name |
10046 | was the result of a function, then it is possible to have a symbol | |
10047 | already to be known as a derived type yet have no components. */ | |
10048 | ||
10049 | match | |
10050 | gfc_match_derived_decl (void) | |
10051 | { | |
10052 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
ea94d76d | 10053 | char parent[GFC_MAX_SYMBOL_LEN + 1]; |
c5d33754 | 10054 | symbol_attribute attr; |
c2958b6b | 10055 | gfc_symbol *sym, *gensym; |
ea94d76d | 10056 | gfc_symbol *extended; |
c5d33754 | 10057 | match m; |
10058 | match is_type_attr_spec = MATCH_NO; | |
33e86520 | 10059 | bool seen_attr = false; |
c2958b6b | 10060 | gfc_interface *intr = NULL, *head; |
9d958d5b | 10061 | bool parameterized_type = false; |
10062 | bool seen_colons = false; | |
c5d33754 | 10063 | |
d7cd448a | 10064 | if (gfc_comp_struct (gfc_current_state ())) |
c5d33754 | 10065 | return MATCH_NO; |
10066 | ||
ea94d76d | 10067 | name[0] = '\0'; |
10068 | parent[0] = '\0'; | |
c5d33754 | 10069 | gfc_clear_attr (&attr); |
ea94d76d | 10070 | extended = NULL; |
c5d33754 | 10071 | |
10072 | do | |
10073 | { | |
ea94d76d | 10074 | is_type_attr_spec = gfc_get_type_attr_spec (&attr, parent); |
c5d33754 | 10075 | if (is_type_attr_spec == MATCH_ERROR) |
10076 | return MATCH_ERROR; | |
33e86520 | 10077 | if (is_type_attr_spec == MATCH_YES) |
10078 | seen_attr = true; | |
c5d33754 | 10079 | } while (is_type_attr_spec == MATCH_YES); |
4ee9c684 | 10080 | |
e485ad6b | 10081 | /* Deal with derived type extensions. The extension attribute has |
10082 | been added to 'attr' but now the parent type must be found and | |
10083 | checked. */ | |
ea94d76d | 10084 | if (parent[0]) |
10085 | extended = check_extended_derived_type (parent); | |
10086 | ||
10087 | if (parent[0] && !extended) | |
10088 | return MATCH_ERROR; | |
10089 | ||
9d958d5b | 10090 | m = gfc_match (" ::"); |
10091 | if (m == MATCH_YES) | |
10092 | { | |
10093 | seen_colons = true; | |
10094 | } | |
10095 | else if (seen_attr) | |
4ee9c684 | 10096 | { |
10097 | gfc_error ("Expected :: in TYPE definition at %C"); | |
10098 | return MATCH_ERROR; | |
10099 | } | |
10100 | ||
9d958d5b | 10101 | m = gfc_match (" %n ", name); |
4ee9c684 | 10102 | if (m != MATCH_YES) |
10103 | return m; | |
10104 | ||
9d958d5b | 10105 | /* Make sure that we don't identify TYPE IS (...) as a parameterized |
10106 | derived type named 'is'. | |
10107 | TODO Expand the check, when 'name' = "is" by matching " (tname) " | |
10108 | and checking if this is a(n intrinsic) typename. his picks up | |
10109 | misplaced TYPE IS statements such as in select_type_1.f03. */ | |
10110 | if (gfc_peek_ascii_char () == '(') | |
10111 | { | |
10112 | if (gfc_current_state () == COMP_SELECT_TYPE | |
10113 | || (!seen_colons && !strcmp (name, "is"))) | |
10114 | return MATCH_NO; | |
10115 | parameterized_type = true; | |
10116 | } | |
10117 | ||
10118 | m = gfc_match_eos (); | |
10119 | if (m != MATCH_YES && !parameterized_type) | |
10120 | return m; | |
10121 | ||
a3055431 | 10122 | /* Make sure the name is not the name of an intrinsic type. */ |
10123 | if (gfc_is_intrinsic_typename (name)) | |
4ee9c684 | 10124 | { |
716da296 | 10125 | gfc_error ("Type name %qs at %C cannot be the same as an intrinsic " |
1a9745d2 | 10126 | "type", name); |
4ee9c684 | 10127 | return MATCH_ERROR; |
10128 | } | |
10129 | ||
c2958b6b | 10130 | if (gfc_get_symbol (name, NULL, &gensym)) |
4ee9c684 | 10131 | return MATCH_ERROR; |
10132 | ||
c2958b6b | 10133 | if (!gensym->attr.generic && gensym->ts.type != BT_UNKNOWN) |
4ee9c684 | 10134 | { |
7dea3ef8 | 10135 | if (gensym->ts.u.derived) |
10136 | gfc_error ("Derived type name %qs at %C already has a basic type " | |
10137 | "of %s", gensym->name, gfc_typename (&gensym->ts)); | |
10138 | else | |
10139 | gfc_error ("Derived type name %qs at %C already has a basic type", | |
10140 | gensym->name); | |
c2958b6b | 10141 | return MATCH_ERROR; |
10142 | } | |
10143 | ||
10144 | if (!gensym->attr.generic | |
60e19868 | 10145 | && !gfc_add_generic (&gensym->attr, gensym->name, NULL)) |
c2958b6b | 10146 | return MATCH_ERROR; |
10147 | ||
10148 | if (!gensym->attr.function | |
60e19868 | 10149 | && !gfc_add_function (&gensym->attr, gensym->name, NULL)) |
c2958b6b | 10150 | return MATCH_ERROR; |
10151 | ||
10152 | sym = gfc_find_dt_in_generic (gensym); | |
10153 | ||
10154 | if (sym && (sym->components != NULL || sym->attr.zero_comp)) | |
10155 | { | |
716da296 | 10156 | gfc_error ("Derived type definition of %qs at %C has already been " |
c2958b6b | 10157 | "defined", sym->name); |
4ee9c684 | 10158 | return MATCH_ERROR; |
10159 | } | |
10160 | ||
c2958b6b | 10161 | if (!sym) |
10162 | { | |
10163 | /* Use upper case to save the actual derived-type symbol. */ | |
d7cd448a | 10164 | gfc_get_symbol (gfc_dt_upper_string (gensym->name), NULL, &sym); |
dc326dc0 | 10165 | sym->name = gfc_get_string ("%s", gensym->name); |
c2958b6b | 10166 | head = gensym->generic; |
10167 | intr = gfc_get_interface (); | |
10168 | intr->sym = sym; | |
10169 | intr->where = gfc_current_locus; | |
10170 | intr->sym->declared_at = gfc_current_locus; | |
10171 | intr->next = head; | |
10172 | gensym->generic = intr; | |
10173 | gensym->attr.if_source = IFSRC_DECL; | |
10174 | } | |
10175 | ||
4ee9c684 | 10176 | /* The symbol may already have the derived attribute without the |
10177 | components. The ways this can happen is via a function | |
10178 | definition, an INTRINSIC statement or a subtype in another | |
10179 | derived type that is a pointer. The first part of the AND clause | |
69b1505f | 10180 | is true if the symbol is not the return value of a function. */ |
4ee9c684 | 10181 | if (sym->attr.flavor != FL_DERIVED |
60e19868 | 10182 | && !gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL)) |
4ee9c684 | 10183 | return MATCH_ERROR; |
10184 | ||
4ee9c684 | 10185 | if (attr.access != ACCESS_UNKNOWN |
60e19868 | 10186 | && !gfc_add_access (&sym->attr, attr.access, sym->name, NULL)) |
4ee9c684 | 10187 | return MATCH_ERROR; |
c2958b6b | 10188 | else if (sym->attr.access == ACCESS_UNKNOWN |
10189 | && gensym->attr.access != ACCESS_UNKNOWN | |
76e207a9 | 10190 | && !gfc_add_access (&sym->attr, gensym->attr.access, |
60e19868 | 10191 | sym->name, NULL)) |
c2958b6b | 10192 | return MATCH_ERROR; |
10193 | ||
10194 | if (sym->attr.access != ACCESS_UNKNOWN | |
10195 | && gensym->attr.access == ACCESS_UNKNOWN) | |
10196 | gensym->attr.access = sym->attr.access; | |
4ee9c684 | 10197 | |
c5d33754 | 10198 | /* See if the derived type was labeled as bind(c). */ |
10199 | if (attr.is_bind_c != 0) | |
10200 | sym->attr.is_bind_c = attr.is_bind_c; | |
10201 | ||
223f0f57 | 10202 | /* Construct the f2k_derived namespace if it is not yet there. */ |
10203 | if (!sym->f2k_derived) | |
10204 | sym->f2k_derived = gfc_get_namespace (NULL, 0); | |
8db94b3b | 10205 | |
9d958d5b | 10206 | if (parameterized_type) |
10207 | { | |
f0efd2e8 | 10208 | /* Ignore error or mismatches by going to the end of the statement |
10209 | in order to avoid the component declarations causing problems. */ | |
10210 | m = gfc_match_formal_arglist (sym, 0, 0, true); | |
10211 | if (m != MATCH_YES) | |
10212 | gfc_error_recovery (); | |
9d958d5b | 10213 | m = gfc_match_eos (); |
10214 | if (m != MATCH_YES) | |
8df28d5e | 10215 | { |
10216 | gfc_error_recovery (); | |
10217 | gfc_error_now ("Garbage after PARAMETERIZED TYPE declaration at %C"); | |
10218 | } | |
9d958d5b | 10219 | sym->attr.pdt_template = 1; |
10220 | } | |
10221 | ||
ea94d76d | 10222 | if (extended && !sym->components) |
10223 | { | |
10224 | gfc_component *p; | |
9d958d5b | 10225 | gfc_formal_arglist *f, *g, *h; |
ea94d76d | 10226 | |
10227 | /* Add the extended derived type as the first component. */ | |
10228 | gfc_add_component (sym, parent, &p); | |
ea94d76d | 10229 | extended->refs++; |
10230 | gfc_set_sym_referenced (extended); | |
10231 | ||
10232 | p->ts.type = BT_DERIVED; | |
eeebe20b | 10233 | p->ts.u.derived = extended; |
ea94d76d | 10234 | p->initializer = gfc_default_initializer (&p->ts); |
8db94b3b | 10235 | |
bdfbc762 | 10236 | /* Set extension level. */ |
10237 | if (extended->attr.extension == 255) | |
10238 | { | |
10239 | /* Since the extension field is 8 bit wide, we can only have | |
10240 | up to 255 extension levels. */ | |
716da296 | 10241 | gfc_error ("Maximum extension level reached with type %qs at %L", |
bdfbc762 | 10242 | extended->name, &extended->declared_at); |
10243 | return MATCH_ERROR; | |
10244 | } | |
10245 | sym->attr.extension = extended->attr.extension + 1; | |
ea94d76d | 10246 | |
10247 | /* Provide the links between the extended type and its extension. */ | |
10248 | if (!extended->f2k_derived) | |
10249 | extended->f2k_derived = gfc_get_namespace (NULL, 0); | |
9d958d5b | 10250 | |
10251 | /* Copy the extended type-param-name-list from the extended type, | |
10252 | append those of the extension and add the whole lot to the | |
10253 | extension. */ | |
10254 | if (extended->attr.pdt_template) | |
10255 | { | |
10256 | g = h = NULL; | |
10257 | sym->attr.pdt_template = 1; | |
10258 | for (f = extended->formal; f; f = f->next) | |
10259 | { | |
10260 | if (f == extended->formal) | |
10261 | { | |
10262 | g = gfc_get_formal_arglist (); | |
10263 | h = g; | |
10264 | } | |
10265 | else | |
10266 | { | |
10267 | g->next = gfc_get_formal_arglist (); | |
10268 | g = g->next; | |
10269 | } | |
10270 | g->sym = f->sym; | |
10271 | } | |
10272 | g->next = sym->formal; | |
10273 | sym->formal = h; | |
10274 | } | |
ea94d76d | 10275 | } |
10276 | ||
bdfbc762 | 10277 | if (!sym->hash_value) |
10278 | /* Set the hash for the compound name for this type. */ | |
a656e7c2 | 10279 | sym->hash_value = gfc_hash_value (sym); |
1de1b1a9 | 10280 | |
ac5f2650 | 10281 | /* Take over the ABSTRACT attribute. */ |
10282 | sym->attr.abstract = attr.abstract; | |
10283 | ||
4ee9c684 | 10284 | gfc_new_block = sym; |
10285 | ||
10286 | return MATCH_YES; | |
10287 | } | |
b549d2a5 | 10288 | |
10289 | ||
8db94b3b | 10290 | /* Cray Pointees can be declared as: |
452695a8 | 10291 | pointer (ipt, a (n,m,...,*)) */ |
b549d2a5 | 10292 | |
8458f4ca | 10293 | match |
b549d2a5 | 10294 | gfc_mod_pointee_as (gfc_array_spec *as) |
10295 | { | |
10296 | as->cray_pointee = true; /* This will be useful to know later. */ | |
10297 | if (as->type == AS_ASSUMED_SIZE) | |
452695a8 | 10298 | as->cp_was_assumed = true; |
b549d2a5 | 10299 | else if (as->type == AS_ASSUMED_SHAPE) |
10300 | { | |
10301 | gfc_error ("Cray Pointee at %C cannot be assumed shape array"); | |
10302 | return MATCH_ERROR; | |
10303 | } | |
10304 | return MATCH_YES; | |
10305 | } | |
3b6a4b41 | 10306 | |
10307 | ||
8db94b3b | 10308 | /* Match the enum definition statement, here we are trying to match |
10309 | the first line of enum definition statement. | |
3b6a4b41 | 10310 | Returns MATCH_YES if match is found. */ |
10311 | ||
10312 | match | |
10313 | gfc_match_enum (void) | |
10314 | { | |
10315 | match m; | |
8db94b3b | 10316 | |
3b6a4b41 | 10317 | m = gfc_match_eos (); |
10318 | if (m != MATCH_YES) | |
10319 | return m; | |
10320 | ||
60e19868 | 10321 | if (!gfc_notify_std (GFC_STD_F2003, "ENUM and ENUMERATOR at %C")) |
3b6a4b41 | 10322 | return MATCH_ERROR; |
10323 | ||
10324 | return MATCH_YES; | |
10325 | } | |
10326 | ||
10327 | ||
fe1328da | 10328 | /* Returns an initializer whose value is one higher than the value of the |
10329 | LAST_INITIALIZER argument. If the argument is NULL, the | |
10330 | initializers value will be set to zero. The initializer's kind | |
10331 | will be set to gfc_c_int_kind. | |
10332 | ||
10333 | If -fshort-enums is given, the appropriate kind will be selected | |
10334 | later after all enumerators have been parsed. A warning is issued | |
10335 | here if an initializer exceeds gfc_c_int_kind. */ | |
10336 | ||
10337 | static gfc_expr * | |
10338 | enum_initializer (gfc_expr *last_initializer, locus where) | |
10339 | { | |
10340 | gfc_expr *result; | |
126387b5 | 10341 | result = gfc_get_constant_expr (BT_INTEGER, gfc_c_int_kind, &where); |
fe1328da | 10342 | |
10343 | mpz_init (result->value.integer); | |
10344 | ||
10345 | if (last_initializer != NULL) | |
10346 | { | |
10347 | mpz_add_ui (result->value.integer, last_initializer->value.integer, 1); | |
10348 | result->where = last_initializer->where; | |
10349 | ||
10350 | if (gfc_check_integer_range (result->value.integer, | |
10351 | gfc_c_int_kind) != ARITH_OK) | |
10352 | { | |
10353 | gfc_error ("Enumerator exceeds the C integer type at %C"); | |
10354 | return NULL; | |
10355 | } | |
10356 | } | |
10357 | else | |
10358 | { | |
10359 | /* Control comes here, if it's the very first enumerator and no | |
10360 | initializer has been given. It will be initialized to zero. */ | |
10361 | mpz_set_si (result->value.integer, 0); | |
10362 | } | |
10363 | ||
10364 | return result; | |
10365 | } | |
10366 | ||
10367 | ||
60fbbf9e | 10368 | /* Match a variable name with an optional initializer. When this |
10369 | subroutine is called, a variable is expected to be parsed next. | |
10370 | Depending on what is happening at the moment, updates either the | |
10371 | symbol table or the current interface. */ | |
10372 | ||
10373 | static match | |
10374 | enumerator_decl (void) | |
10375 | { | |
10376 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10377 | gfc_expr *initializer; | |
10378 | gfc_array_spec *as = NULL; | |
10379 | gfc_symbol *sym; | |
10380 | locus var_locus; | |
10381 | match m; | |
60e19868 | 10382 | bool t; |
60fbbf9e | 10383 | locus old_locus; |
10384 | ||
10385 | initializer = NULL; | |
10386 | old_locus = gfc_current_locus; | |
10387 | ||
10388 | /* When we get here, we've just matched a list of attributes and | |
10389 | maybe a type and a double colon. The next thing we expect to see | |
10390 | is the name of the symbol. */ | |
10391 | m = gfc_match_name (name); | |
10392 | if (m != MATCH_YES) | |
10393 | goto cleanup; | |
10394 | ||
10395 | var_locus = gfc_current_locus; | |
10396 | ||
10397 | /* OK, we've successfully matched the declaration. Now put the | |
10398 | symbol in the current namespace. If we fail to create the symbol, | |
10399 | bail out. */ | |
60e19868 | 10400 | if (!build_sym (name, NULL, false, &as, &var_locus)) |
60fbbf9e | 10401 | { |
10402 | m = MATCH_ERROR; | |
10403 | goto cleanup; | |
10404 | } | |
10405 | ||
10406 | /* The double colon must be present in order to have initializers. | |
10407 | Otherwise the statement is ambiguous with an assignment statement. */ | |
10408 | if (colon_seen) | |
10409 | { | |
10410 | if (gfc_match_char ('=') == MATCH_YES) | |
10411 | { | |
10412 | m = gfc_match_init_expr (&initializer); | |
10413 | if (m == MATCH_NO) | |
10414 | { | |
10415 | gfc_error ("Expected an initialization expression at %C"); | |
10416 | m = MATCH_ERROR; | |
10417 | } | |
10418 | ||
10419 | if (m != MATCH_YES) | |
10420 | goto cleanup; | |
10421 | } | |
10422 | } | |
10423 | ||
10424 | /* If we do not have an initializer, the initialization value of the | |
10425 | previous enumerator (stored in last_initializer) is incremented | |
10426 | by 1 and is used to initialize the current enumerator. */ | |
10427 | if (initializer == NULL) | |
fe1328da | 10428 | initializer = enum_initializer (last_initializer, old_locus); |
e14bee04 | 10429 | |
60fbbf9e | 10430 | if (initializer == NULL || initializer->ts.type != BT_INTEGER) |
10431 | { | |
a8beb4f8 | 10432 | gfc_error ("ENUMERATOR %L not initialized with integer expression", |
10433 | &var_locus); | |
e14bee04 | 10434 | m = MATCH_ERROR; |
60fbbf9e | 10435 | goto cleanup; |
10436 | } | |
10437 | ||
10438 | /* Store this current initializer, for the next enumerator variable | |
10439 | to be parsed. add_init_expr_to_sym() zeros initializer, so we | |
10440 | use last_initializer below. */ | |
10441 | last_initializer = initializer; | |
10442 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
10443 | ||
10444 | /* Maintain enumerator history. */ | |
10445 | gfc_find_symbol (name, NULL, 0, &sym); | |
10446 | create_enum_history (sym, last_initializer); | |
10447 | ||
60e19868 | 10448 | return (t) ? MATCH_YES : MATCH_ERROR; |
60fbbf9e | 10449 | |
10450 | cleanup: | |
10451 | /* Free stuff up and return. */ | |
10452 | gfc_free_expr (initializer); | |
10453 | ||
10454 | return m; | |
10455 | } | |
10456 | ||
10457 | ||
f6d0e37a | 10458 | /* Match the enumerator definition statement. */ |
3b6a4b41 | 10459 | |
10460 | match | |
10461 | gfc_match_enumerator_def (void) | |
10462 | { | |
10463 | match m; | |
60e19868 | 10464 | bool t; |
e14bee04 | 10465 | |
3b6a4b41 | 10466 | gfc_clear_ts (¤t_ts); |
e14bee04 | 10467 | |
3b6a4b41 | 10468 | m = gfc_match (" enumerator"); |
10469 | if (m != MATCH_YES) | |
10470 | return m; | |
60fbbf9e | 10471 | |
10472 | m = gfc_match (" :: "); | |
10473 | if (m == MATCH_ERROR) | |
10474 | return m; | |
10475 | ||
10476 | colon_seen = (m == MATCH_YES); | |
e14bee04 | 10477 | |
3b6a4b41 | 10478 | if (gfc_current_state () != COMP_ENUM) |
10479 | { | |
10480 | gfc_error ("ENUM definition statement expected before %C"); | |
10481 | gfc_free_enum_history (); | |
10482 | return MATCH_ERROR; | |
10483 | } | |
10484 | ||
10485 | (¤t_ts)->type = BT_INTEGER; | |
10486 | (¤t_ts)->kind = gfc_c_int_kind; | |
e14bee04 | 10487 | |
60fbbf9e | 10488 | gfc_clear_attr (¤t_attr); |
10489 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, NULL); | |
60e19868 | 10490 | if (!t) |
3b6a4b41 | 10491 | { |
60fbbf9e | 10492 | m = MATCH_ERROR; |
3b6a4b41 | 10493 | goto cleanup; |
10494 | } | |
10495 | ||
3b6a4b41 | 10496 | for (;;) |
10497 | { | |
60fbbf9e | 10498 | m = enumerator_decl (); |
3b6a4b41 | 10499 | if (m == MATCH_ERROR) |
a8beb4f8 | 10500 | { |
10501 | gfc_free_enum_history (); | |
10502 | goto cleanup; | |
10503 | } | |
3b6a4b41 | 10504 | if (m == MATCH_NO) |
10505 | break; | |
10506 | ||
10507 | if (gfc_match_eos () == MATCH_YES) | |
10508 | goto cleanup; | |
10509 | if (gfc_match_char (',') != MATCH_YES) | |
10510 | break; | |
10511 | } | |
10512 | ||
10513 | if (gfc_current_state () == COMP_ENUM) | |
10514 | { | |
10515 | gfc_free_enum_history (); | |
10516 | gfc_error ("Syntax error in ENUMERATOR definition at %C"); | |
10517 | m = MATCH_ERROR; | |
10518 | } | |
10519 | ||
10520 | cleanup: | |
10521 | gfc_free_array_spec (current_as); | |
10522 | current_as = NULL; | |
10523 | return m; | |
10524 | ||
10525 | } | |
10526 | ||
e449e4dd | 10527 | |
7fd88f6e | 10528 | /* Match binding attributes. */ |
10529 | ||
10530 | static match | |
64e93293 | 10531 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc) |
7fd88f6e | 10532 | { |
10533 | bool found_passing = false; | |
64e93293 | 10534 | bool seen_ptr = false; |
fe9b08a2 | 10535 | match m = MATCH_YES; |
7fd88f6e | 10536 | |
df084314 | 10537 | /* Initialize to defaults. Do so even before the MATCH_NO check so that in |
7fd88f6e | 10538 | this case the defaults are in there. */ |
10539 | ba->access = ACCESS_UNKNOWN; | |
10540 | ba->pass_arg = NULL; | |
10541 | ba->pass_arg_num = 0; | |
10542 | ba->nopass = 0; | |
10543 | ba->non_overridable = 0; | |
61c3b81d | 10544 | ba->deferred = 0; |
fe9b08a2 | 10545 | ba->ppc = ppc; |
7fd88f6e | 10546 | |
10547 | /* If we find a comma, we believe there are binding attributes. */ | |
fe9b08a2 | 10548 | m = gfc_match_char (','); |
10549 | if (m == MATCH_NO) | |
10550 | goto done; | |
7fd88f6e | 10551 | |
10552 | do | |
10553 | { | |
e2f06a48 | 10554 | /* Access specifier. */ |
10555 | ||
10556 | m = gfc_match (" public"); | |
7fd88f6e | 10557 | if (m == MATCH_ERROR) |
10558 | goto error; | |
10559 | if (m == MATCH_YES) | |
10560 | { | |
e2f06a48 | 10561 | if (ba->access != ACCESS_UNKNOWN) |
7fd88f6e | 10562 | { |
e2f06a48 | 10563 | gfc_error ("Duplicate access-specifier at %C"); |
7fd88f6e | 10564 | goto error; |
10565 | } | |
10566 | ||
e2f06a48 | 10567 | ba->access = ACCESS_PUBLIC; |
7fd88f6e | 10568 | continue; |
10569 | } | |
10570 | ||
e2f06a48 | 10571 | m = gfc_match (" private"); |
7fd88f6e | 10572 | if (m == MATCH_ERROR) |
10573 | goto error; | |
10574 | if (m == MATCH_YES) | |
10575 | { | |
e2f06a48 | 10576 | if (ba->access != ACCESS_UNKNOWN) |
7fd88f6e | 10577 | { |
e2f06a48 | 10578 | gfc_error ("Duplicate access-specifier at %C"); |
7fd88f6e | 10579 | goto error; |
10580 | } | |
10581 | ||
e2f06a48 | 10582 | ba->access = ACCESS_PRIVATE; |
7fd88f6e | 10583 | continue; |
10584 | } | |
10585 | ||
e2f06a48 | 10586 | /* If inside GENERIC, the following is not allowed. */ |
10587 | if (!generic) | |
7fd88f6e | 10588 | { |
7fd88f6e | 10589 | |
e2f06a48 | 10590 | /* NOPASS flag. */ |
10591 | m = gfc_match (" nopass"); | |
10592 | if (m == MATCH_ERROR) | |
10593 | goto error; | |
10594 | if (m == MATCH_YES) | |
7fd88f6e | 10595 | { |
e2f06a48 | 10596 | if (found_passing) |
10597 | { | |
10598 | gfc_error ("Binding attributes already specify passing," | |
10599 | " illegal NOPASS at %C"); | |
10600 | goto error; | |
10601 | } | |
10602 | ||
10603 | found_passing = true; | |
10604 | ba->nopass = 1; | |
10605 | continue; | |
7fd88f6e | 10606 | } |
10607 | ||
e2f06a48 | 10608 | /* PASS possibly including argument. */ |
10609 | m = gfc_match (" pass"); | |
10610 | if (m == MATCH_ERROR) | |
10611 | goto error; | |
10612 | if (m == MATCH_YES) | |
7fd88f6e | 10613 | { |
e2f06a48 | 10614 | char arg[GFC_MAX_SYMBOL_LEN + 1]; |
10615 | ||
10616 | if (found_passing) | |
10617 | { | |
10618 | gfc_error ("Binding attributes already specify passing," | |
10619 | " illegal PASS at %C"); | |
10620 | goto error; | |
10621 | } | |
10622 | ||
10623 | m = gfc_match (" ( %n )", arg); | |
10624 | if (m == MATCH_ERROR) | |
10625 | goto error; | |
10626 | if (m == MATCH_YES) | |
dc326dc0 | 10627 | ba->pass_arg = gfc_get_string ("%s", arg); |
e2f06a48 | 10628 | gcc_assert ((m == MATCH_YES) == (ba->pass_arg != NULL)); |
10629 | ||
10630 | found_passing = true; | |
10631 | ba->nopass = 0; | |
10632 | continue; | |
7fd88f6e | 10633 | } |
10634 | ||
64e93293 | 10635 | if (ppc) |
10636 | { | |
10637 | /* POINTER flag. */ | |
10638 | m = gfc_match (" pointer"); | |
10639 | if (m == MATCH_ERROR) | |
10640 | goto error; | |
10641 | if (m == MATCH_YES) | |
10642 | { | |
10643 | if (seen_ptr) | |
10644 | { | |
10645 | gfc_error ("Duplicate POINTER attribute at %C"); | |
10646 | goto error; | |
10647 | } | |
10648 | ||
10649 | seen_ptr = true; | |
64e93293 | 10650 | continue; |
10651 | } | |
10652 | } | |
10653 | else | |
10654 | { | |
10655 | /* NON_OVERRIDABLE flag. */ | |
10656 | m = gfc_match (" non_overridable"); | |
10657 | if (m == MATCH_ERROR) | |
10658 | goto error; | |
10659 | if (m == MATCH_YES) | |
10660 | { | |
10661 | if (ba->non_overridable) | |
10662 | { | |
10663 | gfc_error ("Duplicate NON_OVERRIDABLE at %C"); | |
10664 | goto error; | |
10665 | } | |
10666 | ||
10667 | ba->non_overridable = 1; | |
10668 | continue; | |
10669 | } | |
10670 | ||
10671 | /* DEFERRED flag. */ | |
10672 | m = gfc_match (" deferred"); | |
10673 | if (m == MATCH_ERROR) | |
10674 | goto error; | |
10675 | if (m == MATCH_YES) | |
10676 | { | |
10677 | if (ba->deferred) | |
10678 | { | |
10679 | gfc_error ("Duplicate DEFERRED at %C"); | |
10680 | goto error; | |
10681 | } | |
10682 | ||
10683 | ba->deferred = 1; | |
10684 | continue; | |
10685 | } | |
10686 | } | |
10687 | ||
7fd88f6e | 10688 | } |
10689 | ||
10690 | /* Nothing matching found. */ | |
e2f06a48 | 10691 | if (generic) |
10692 | gfc_error ("Expected access-specifier at %C"); | |
10693 | else | |
10694 | gfc_error ("Expected binding attribute at %C"); | |
7fd88f6e | 10695 | goto error; |
10696 | } | |
10697 | while (gfc_match_char (',') == MATCH_YES); | |
10698 | ||
61c3b81d | 10699 | /* NON_OVERRIDABLE and DEFERRED exclude themselves. */ |
10700 | if (ba->non_overridable && ba->deferred) | |
10701 | { | |
10702 | gfc_error ("NON_OVERRIDABLE and DEFERRED can't both appear at %C"); | |
10703 | goto error; | |
10704 | } | |
10705 | ||
fe9b08a2 | 10706 | m = MATCH_YES; |
10707 | ||
10708 | done: | |
e2f06a48 | 10709 | if (ba->access == ACCESS_UNKNOWN) |
c41ff969 | 10710 | ba->access = ppc ? gfc_current_block()->component_access |
10711 | : gfc_typebound_default_access; | |
e2f06a48 | 10712 | |
64e93293 | 10713 | if (ppc && !seen_ptr) |
10714 | { | |
10715 | gfc_error ("POINTER attribute is required for procedure pointer component" | |
10716 | " at %C"); | |
10717 | goto error; | |
10718 | } | |
10719 | ||
fe9b08a2 | 10720 | return m; |
7fd88f6e | 10721 | |
10722 | error: | |
7fd88f6e | 10723 | return MATCH_ERROR; |
10724 | } | |
10725 | ||
10726 | ||
10727 | /* Match a PROCEDURE specific binding inside a derived type. */ | |
10728 | ||
10729 | static match | |
10730 | match_procedure_in_type (void) | |
10731 | { | |
10732 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10733 | char target_buf[GFC_MAX_SYMBOL_LEN + 1]; | |
7a3aaef8 | 10734 | char* target = NULL, *ifc = NULL; |
4a12b9ba | 10735 | gfc_typebound_proc tb; |
7fd88f6e | 10736 | bool seen_colons; |
10737 | bool seen_attrs; | |
10738 | match m; | |
10739 | gfc_symtree* stree; | |
10740 | gfc_namespace* ns; | |
10741 | gfc_symbol* block; | |
7a3aaef8 | 10742 | int num; |
7fd88f6e | 10743 | |
10744 | /* Check current state. */ | |
10745 | gcc_assert (gfc_state_stack->state == COMP_DERIVED_CONTAINS); | |
10746 | block = gfc_state_stack->previous->sym; | |
10747 | gcc_assert (block); | |
10748 | ||
61c3b81d | 10749 | /* Try to match PROCEDURE(interface). */ |
7fd88f6e | 10750 | if (gfc_match (" (") == MATCH_YES) |
10751 | { | |
61c3b81d | 10752 | m = gfc_match_name (target_buf); |
10753 | if (m == MATCH_ERROR) | |
10754 | return m; | |
10755 | if (m != MATCH_YES) | |
10756 | { | |
0d2b3c9c | 10757 | gfc_error ("Interface-name expected after %<(%> at %C"); |
61c3b81d | 10758 | return MATCH_ERROR; |
10759 | } | |
10760 | ||
10761 | if (gfc_match (" )") != MATCH_YES) | |
10762 | { | |
0d2b3c9c | 10763 | gfc_error ("%<)%> expected at %C"); |
61c3b81d | 10764 | return MATCH_ERROR; |
10765 | } | |
10766 | ||
7a3aaef8 | 10767 | ifc = target_buf; |
7fd88f6e | 10768 | } |
10769 | ||
10770 | /* Construct the data structure. */ | |
b3d1387f | 10771 | memset (&tb, 0, sizeof (tb)); |
4a12b9ba | 10772 | tb.where = gfc_current_locus; |
7fd88f6e | 10773 | |
10774 | /* Match binding attributes. */ | |
4a12b9ba | 10775 | m = match_binding_attributes (&tb, false, false); |
7fd88f6e | 10776 | if (m == MATCH_ERROR) |
10777 | return m; | |
10778 | seen_attrs = (m == MATCH_YES); | |
10779 | ||
7a3aaef8 | 10780 | /* Check that attribute DEFERRED is given if an interface is specified. */ |
4a12b9ba | 10781 | if (tb.deferred && !ifc) |
61c3b81d | 10782 | { |
10783 | gfc_error ("Interface must be specified for DEFERRED binding at %C"); | |
10784 | return MATCH_ERROR; | |
10785 | } | |
4a12b9ba | 10786 | if (ifc && !tb.deferred) |
61c3b81d | 10787 | { |
10788 | gfc_error ("PROCEDURE(interface) at %C should be declared DEFERRED"); | |
10789 | return MATCH_ERROR; | |
10790 | } | |
10791 | ||
7fd88f6e | 10792 | /* Match the colons. */ |
10793 | m = gfc_match (" ::"); | |
10794 | if (m == MATCH_ERROR) | |
10795 | return m; | |
10796 | seen_colons = (m == MATCH_YES); | |
10797 | if (seen_attrs && !seen_colons) | |
10798 | { | |
0d2b3c9c | 10799 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
7fd88f6e | 10800 | return MATCH_ERROR; |
10801 | } | |
10802 | ||
8db94b3b | 10803 | /* Match the binding names. */ |
7a3aaef8 | 10804 | for(num=1;;num++) |
7fd88f6e | 10805 | { |
7a3aaef8 | 10806 | m = gfc_match_name (name); |
10807 | if (m == MATCH_ERROR) | |
10808 | return m; | |
10809 | if (m == MATCH_NO) | |
61c3b81d | 10810 | { |
7a3aaef8 | 10811 | gfc_error ("Expected binding name at %C"); |
61c3b81d | 10812 | return MATCH_ERROR; |
10813 | } | |
10814 | ||
60e19868 | 10815 | if (num>1 && !gfc_notify_std (GFC_STD_F2008, "PROCEDURE list at %C")) |
7a3aaef8 | 10816 | return MATCH_ERROR; |
7fd88f6e | 10817 | |
7a3aaef8 | 10818 | /* Try to match the '=> target', if it's there. */ |
10819 | target = ifc; | |
10820 | m = gfc_match (" =>"); | |
7fd88f6e | 10821 | if (m == MATCH_ERROR) |
10822 | return m; | |
7a3aaef8 | 10823 | if (m == MATCH_YES) |
7fd88f6e | 10824 | { |
4a12b9ba | 10825 | if (tb.deferred) |
7a3aaef8 | 10826 | { |
0d2b3c9c | 10827 | gfc_error ("%<=> target%> is invalid for DEFERRED binding at %C"); |
7a3aaef8 | 10828 | return MATCH_ERROR; |
10829 | } | |
10830 | ||
10831 | if (!seen_colons) | |
10832 | { | |
0d2b3c9c | 10833 | gfc_error ("%<::%> needed in PROCEDURE binding with explicit target" |
7a3aaef8 | 10834 | " at %C"); |
10835 | return MATCH_ERROR; | |
10836 | } | |
10837 | ||
10838 | m = gfc_match_name (target_buf); | |
10839 | if (m == MATCH_ERROR) | |
10840 | return m; | |
10841 | if (m == MATCH_NO) | |
10842 | { | |
0d2b3c9c | 10843 | gfc_error ("Expected binding target after %<=>%> at %C"); |
7a3aaef8 | 10844 | return MATCH_ERROR; |
10845 | } | |
10846 | target = target_buf; | |
7fd88f6e | 10847 | } |
7fd88f6e | 10848 | |
7a3aaef8 | 10849 | /* If no target was found, it has the same name as the binding. */ |
10850 | if (!target) | |
10851 | target = name; | |
7fd88f6e | 10852 | |
7a3aaef8 | 10853 | /* Get the namespace to insert the symbols into. */ |
10854 | ns = block->f2k_derived; | |
10855 | gcc_assert (ns); | |
7fd88f6e | 10856 | |
7a3aaef8 | 10857 | /* If the binding is DEFERRED, check that the containing type is ABSTRACT. */ |
4a12b9ba | 10858 | if (tb.deferred && !block->attr.abstract) |
7a3aaef8 | 10859 | { |
716da296 | 10860 | gfc_error ("Type %qs containing DEFERRED binding at %C " |
7a3aaef8 | 10861 | "is not ABSTRACT", block->name); |
10862 | return MATCH_ERROR; | |
10863 | } | |
7fd88f6e | 10864 | |
7a3aaef8 | 10865 | /* See if we already have a binding with this name in the symtree which |
9834e1b6 | 10866 | would be an error. If a GENERIC already targeted this binding, it may |
7a3aaef8 | 10867 | be already there but then typebound is still NULL. */ |
10868 | stree = gfc_find_symtree (ns->tb_sym_root, name); | |
e204cb62 | 10869 | if (stree && stree->n.tb) |
7a3aaef8 | 10870 | { |
716da296 | 10871 | gfc_error ("There is already a procedure with binding name %qs for " |
10872 | "the derived type %qs at %C", name, block->name); | |
7a3aaef8 | 10873 | return MATCH_ERROR; |
10874 | } | |
61c3b81d | 10875 | |
7a3aaef8 | 10876 | /* Insert it and set attributes. */ |
7fd88f6e | 10877 | |
e204cb62 | 10878 | if (!stree) |
10879 | { | |
10880 | stree = gfc_new_symtree (&ns->tb_sym_root, name); | |
10881 | gcc_assert (stree); | |
10882 | } | |
4a12b9ba | 10883 | stree->n.tb = gfc_get_typebound_proc (&tb); |
3323e9b1 | 10884 | |
4a12b9ba | 10885 | if (gfc_get_sym_tree (target, gfc_current_ns, &stree->n.tb->u.specific, |
10886 | false)) | |
7a3aaef8 | 10887 | return MATCH_ERROR; |
4a12b9ba | 10888 | gfc_set_sym_referenced (stree->n.tb->u.specific->n.sym); |
1f302f2e | 10889 | gfc_add_flavor(&stree->n.tb->u.specific->n.sym->attr, FL_PROCEDURE, |
10890 | target, &stree->n.tb->u.specific->n.sym->declared_at); | |
8db94b3b | 10891 | |
7a3aaef8 | 10892 | if (gfc_match_eos () == MATCH_YES) |
10893 | return MATCH_YES; | |
10894 | if (gfc_match_char (',') != MATCH_YES) | |
10895 | goto syntax; | |
3323e9b1 | 10896 | } |
7fd88f6e | 10897 | |
7a3aaef8 | 10898 | syntax: |
10899 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
10900 | return MATCH_ERROR; | |
7fd88f6e | 10901 | } |
10902 | ||
10903 | ||
e2f06a48 | 10904 | /* Match a GENERIC procedure binding inside a derived type. */ |
10905 | ||
10906 | match | |
10907 | gfc_match_generic (void) | |
10908 | { | |
10909 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
a36eb9ee | 10910 | char bind_name[GFC_MAX_SYMBOL_LEN + 16]; /* Allow space for OPERATOR(...). */ |
e2f06a48 | 10911 | gfc_symbol* block; |
10912 | gfc_typebound_proc tbattr; /* Used for match_binding_attributes. */ | |
10913 | gfc_typebound_proc* tb; | |
e2f06a48 | 10914 | gfc_namespace* ns; |
a36eb9ee | 10915 | interface_type op_type; |
10916 | gfc_intrinsic_op op; | |
e2f06a48 | 10917 | match m; |
10918 | ||
10919 | /* Check current state. */ | |
10920 | if (gfc_current_state () == COMP_DERIVED) | |
10921 | { | |
10922 | gfc_error ("GENERIC at %C must be inside a derived-type CONTAINS"); | |
10923 | return MATCH_ERROR; | |
10924 | } | |
10925 | if (gfc_current_state () != COMP_DERIVED_CONTAINS) | |
10926 | return MATCH_NO; | |
10927 | block = gfc_state_stack->previous->sym; | |
10928 | ns = block->f2k_derived; | |
10929 | gcc_assert (block && ns); | |
10930 | ||
b3d1387f | 10931 | memset (&tbattr, 0, sizeof (tbattr)); |
10932 | tbattr.where = gfc_current_locus; | |
10933 | ||
e2f06a48 | 10934 | /* See if we get an access-specifier. */ |
64e93293 | 10935 | m = match_binding_attributes (&tbattr, true, false); |
e2f06a48 | 10936 | if (m == MATCH_ERROR) |
10937 | goto error; | |
10938 | ||
10939 | /* Now the colons, those are required. */ | |
10940 | if (gfc_match (" ::") != MATCH_YES) | |
10941 | { | |
0d2b3c9c | 10942 | gfc_error ("Expected %<::%> at %C"); |
e2f06a48 | 10943 | goto error; |
10944 | } | |
10945 | ||
a36eb9ee | 10946 | /* Match the binding name; depending on type (operator / generic) format |
10947 | it for future error messages into bind_name. */ | |
8db94b3b | 10948 | |
a36eb9ee | 10949 | m = gfc_match_generic_spec (&op_type, name, &op); |
e2f06a48 | 10950 | if (m == MATCH_ERROR) |
10951 | return MATCH_ERROR; | |
10952 | if (m == MATCH_NO) | |
10953 | { | |
a36eb9ee | 10954 | gfc_error ("Expected generic name or operator descriptor at %C"); |
e2f06a48 | 10955 | goto error; |
10956 | } | |
10957 | ||
a36eb9ee | 10958 | switch (op_type) |
e2f06a48 | 10959 | { |
a36eb9ee | 10960 | case INTERFACE_GENERIC: |
9f732c4e | 10961 | case INTERFACE_DTIO: |
a36eb9ee | 10962 | snprintf (bind_name, sizeof (bind_name), "%s", name); |
10963 | break; | |
8db94b3b | 10964 | |
a36eb9ee | 10965 | case INTERFACE_USER_OP: |
10966 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(.%s.)", name); | |
10967 | break; | |
8db94b3b | 10968 | |
a36eb9ee | 10969 | case INTERFACE_INTRINSIC_OP: |
10970 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(%s)", | |
10971 | gfc_op2string (op)); | |
10972 | break; | |
10973 | ||
7e8f55c1 | 10974 | case INTERFACE_NAMELESS: |
10975 | gfc_error ("Malformed GENERIC statement at %C"); | |
10976 | goto error; | |
10977 | break; | |
10978 | ||
a36eb9ee | 10979 | default: |
10980 | gcc_unreachable (); | |
10981 | } | |
3323e9b1 | 10982 | |
a36eb9ee | 10983 | /* Match the required =>. */ |
10984 | if (gfc_match (" =>") != MATCH_YES) | |
10985 | { | |
0d2b3c9c | 10986 | gfc_error ("Expected %<=>%> at %C"); |
a36eb9ee | 10987 | goto error; |
10988 | } | |
8db94b3b | 10989 | |
a36eb9ee | 10990 | /* Try to find existing GENERIC binding with this name / for this operator; |
10991 | if there is something, check that it is another GENERIC and then extend | |
10992 | it rather than building a new node. Otherwise, create it and put it | |
10993 | at the right position. */ | |
10994 | ||
10995 | switch (op_type) | |
10996 | { | |
9f732c4e | 10997 | case INTERFACE_DTIO: |
a36eb9ee | 10998 | case INTERFACE_USER_OP: |
10999 | case INTERFACE_GENERIC: | |
11000 | { | |
11001 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
11002 | gfc_symtree* st; | |
11003 | ||
11004 | st = gfc_find_symtree (is_op ? ns->tb_uop_root : ns->tb_sym_root, name); | |
f7b2c82b | 11005 | tb = st ? st->n.tb : NULL; |
a36eb9ee | 11006 | break; |
11007 | } | |
11008 | ||
11009 | case INTERFACE_INTRINSIC_OP: | |
11010 | tb = ns->tb_op[op]; | |
11011 | break; | |
11012 | ||
11013 | default: | |
11014 | gcc_unreachable (); | |
11015 | } | |
11016 | ||
11017 | if (tb) | |
11018 | { | |
3323e9b1 | 11019 | if (!tb->is_generic) |
e2f06a48 | 11020 | { |
a36eb9ee | 11021 | gcc_assert (op_type == INTERFACE_GENERIC); |
e2f06a48 | 11022 | gfc_error ("There's already a non-generic procedure with binding name" |
716da296 | 11023 | " %qs for the derived type %qs at %C", |
a36eb9ee | 11024 | bind_name, block->name); |
e2f06a48 | 11025 | goto error; |
11026 | } | |
11027 | ||
e2f06a48 | 11028 | if (tb->access != tbattr.access) |
11029 | { | |
11030 | gfc_error ("Binding at %C must have the same access as already" | |
716da296 | 11031 | " defined binding %qs", bind_name); |
e2f06a48 | 11032 | goto error; |
11033 | } | |
11034 | } | |
11035 | else | |
11036 | { | |
4a12b9ba | 11037 | tb = gfc_get_typebound_proc (NULL); |
e2f06a48 | 11038 | tb->where = gfc_current_locus; |
11039 | tb->access = tbattr.access; | |
11040 | tb->is_generic = 1; | |
11041 | tb->u.generic = NULL; | |
a36eb9ee | 11042 | |
11043 | switch (op_type) | |
11044 | { | |
9f732c4e | 11045 | case INTERFACE_DTIO: |
a36eb9ee | 11046 | case INTERFACE_GENERIC: |
11047 | case INTERFACE_USER_OP: | |
11048 | { | |
11049 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
f7b2c82b | 11050 | gfc_symtree* st = gfc_get_tbp_symtree (is_op ? &ns->tb_uop_root : |
11051 | &ns->tb_sym_root, name); | |
a36eb9ee | 11052 | gcc_assert (st); |
11053 | st->n.tb = tb; | |
11054 | ||
11055 | break; | |
11056 | } | |
8db94b3b | 11057 | |
a36eb9ee | 11058 | case INTERFACE_INTRINSIC_OP: |
11059 | ns->tb_op[op] = tb; | |
11060 | break; | |
11061 | ||
11062 | default: | |
11063 | gcc_unreachable (); | |
11064 | } | |
e2f06a48 | 11065 | } |
11066 | ||
11067 | /* Now, match all following names as specific targets. */ | |
11068 | do | |
11069 | { | |
11070 | gfc_symtree* target_st; | |
11071 | gfc_tbp_generic* target; | |
11072 | ||
11073 | m = gfc_match_name (name); | |
11074 | if (m == MATCH_ERROR) | |
11075 | goto error; | |
11076 | if (m == MATCH_NO) | |
11077 | { | |
11078 | gfc_error ("Expected specific binding name at %C"); | |
11079 | goto error; | |
11080 | } | |
11081 | ||
3323e9b1 | 11082 | target_st = gfc_get_tbp_symtree (&ns->tb_sym_root, name); |
e2f06a48 | 11083 | |
11084 | /* See if this is a duplicate specification. */ | |
11085 | for (target = tb->u.generic; target; target = target->next) | |
11086 | if (target_st == target->specific_st) | |
11087 | { | |
716da296 | 11088 | gfc_error ("%qs already defined as specific binding for the" |
11089 | " generic %qs at %C", name, bind_name); | |
e2f06a48 | 11090 | goto error; |
11091 | } | |
11092 | ||
e2f06a48 | 11093 | target = gfc_get_tbp_generic (); |
11094 | target->specific_st = target_st; | |
11095 | target->specific = NULL; | |
11096 | target->next = tb->u.generic; | |
5c0f7d99 | 11097 | target->is_operator = ((op_type == INTERFACE_USER_OP) |
11098 | || (op_type == INTERFACE_INTRINSIC_OP)); | |
e2f06a48 | 11099 | tb->u.generic = target; |
11100 | } | |
11101 | while (gfc_match (" ,") == MATCH_YES); | |
11102 | ||
11103 | /* Here should be the end. */ | |
11104 | if (gfc_match_eos () != MATCH_YES) | |
11105 | { | |
11106 | gfc_error ("Junk after GENERIC binding at %C"); | |
11107 | goto error; | |
11108 | } | |
11109 | ||
11110 | return MATCH_YES; | |
11111 | ||
11112 | error: | |
11113 | return MATCH_ERROR; | |
11114 | } | |
11115 | ||
11116 | ||
223f0f57 | 11117 | /* Match a FINAL declaration inside a derived type. */ |
11118 | ||
11119 | match | |
11120 | gfc_match_final_decl (void) | |
11121 | { | |
11122 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
11123 | gfc_symbol* sym; | |
11124 | match m; | |
11125 | gfc_namespace* module_ns; | |
11126 | bool first, last; | |
7fd88f6e | 11127 | gfc_symbol* block; |
223f0f57 | 11128 | |
519651c1 | 11129 | if (gfc_current_form == FORM_FREE) |
11130 | { | |
11131 | char c = gfc_peek_ascii_char (); | |
11132 | if (!gfc_is_whitespace (c) && c != ':') | |
11133 | return MATCH_NO; | |
11134 | } | |
8db94b3b | 11135 | |
7fd88f6e | 11136 | if (gfc_state_stack->state != COMP_DERIVED_CONTAINS) |
223f0f57 | 11137 | { |
519651c1 | 11138 | if (gfc_current_form == FORM_FIXED) |
11139 | return MATCH_NO; | |
11140 | ||
223f0f57 | 11141 | gfc_error ("FINAL declaration at %C must be inside a derived type " |
7fd88f6e | 11142 | "CONTAINS section"); |
223f0f57 | 11143 | return MATCH_ERROR; |
11144 | } | |
11145 | ||
7fd88f6e | 11146 | block = gfc_state_stack->previous->sym; |
11147 | gcc_assert (block); | |
223f0f57 | 11148 | |
7fd88f6e | 11149 | if (!gfc_state_stack->previous || !gfc_state_stack->previous->previous |
11150 | || gfc_state_stack->previous->previous->state != COMP_MODULE) | |
223f0f57 | 11151 | { |
11152 | gfc_error ("Derived type declaration with FINAL at %C must be in the" | |
11153 | " specification part of a MODULE"); | |
11154 | return MATCH_ERROR; | |
11155 | } | |
11156 | ||
11157 | module_ns = gfc_current_ns; | |
11158 | gcc_assert (module_ns); | |
11159 | gcc_assert (module_ns->proc_name->attr.flavor == FL_MODULE); | |
11160 | ||
11161 | /* Match optional ::, don't care about MATCH_YES or MATCH_NO. */ | |
11162 | if (gfc_match (" ::") == MATCH_ERROR) | |
11163 | return MATCH_ERROR; | |
11164 | ||
11165 | /* Match the sequence of procedure names. */ | |
11166 | first = true; | |
11167 | last = false; | |
11168 | do | |
11169 | { | |
11170 | gfc_finalizer* f; | |
11171 | ||
11172 | if (first && gfc_match_eos () == MATCH_YES) | |
11173 | { | |
11174 | gfc_error ("Empty FINAL at %C"); | |
11175 | return MATCH_ERROR; | |
11176 | } | |
11177 | ||
11178 | m = gfc_match_name (name); | |
11179 | if (m == MATCH_NO) | |
11180 | { | |
11181 | gfc_error ("Expected module procedure name at %C"); | |
11182 | return MATCH_ERROR; | |
11183 | } | |
11184 | else if (m != MATCH_YES) | |
11185 | return MATCH_ERROR; | |
11186 | ||
11187 | if (gfc_match_eos () == MATCH_YES) | |
11188 | last = true; | |
11189 | if (!last && gfc_match_char (',') != MATCH_YES) | |
11190 | { | |
0d2b3c9c | 11191 | gfc_error ("Expected %<,%> at %C"); |
223f0f57 | 11192 | return MATCH_ERROR; |
11193 | } | |
11194 | ||
11195 | if (gfc_get_symbol (name, module_ns, &sym)) | |
11196 | { | |
716da296 | 11197 | gfc_error ("Unknown procedure name %qs at %C", name); |
223f0f57 | 11198 | return MATCH_ERROR; |
11199 | } | |
11200 | ||
11201 | /* Mark the symbol as module procedure. */ | |
11202 | if (sym->attr.proc != PROC_MODULE | |
60e19868 | 11203 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
223f0f57 | 11204 | return MATCH_ERROR; |
11205 | ||
11206 | /* Check if we already have this symbol in the list, this is an error. */ | |
7fd88f6e | 11207 | for (f = block->f2k_derived->finalizers; f; f = f->next) |
e449e4dd | 11208 | if (f->proc_sym == sym) |
223f0f57 | 11209 | { |
c2a4993a | 11210 | gfc_error ("%qs at %C is already defined as FINAL procedure", |
223f0f57 | 11211 | name); |
11212 | return MATCH_ERROR; | |
11213 | } | |
11214 | ||
11215 | /* Add this symbol to the list of finalizers. */ | |
7fd88f6e | 11216 | gcc_assert (block->f2k_derived); |
c77c84dd | 11217 | sym->refs++; |
48d8ad5a | 11218 | f = XCNEW (gfc_finalizer); |
e449e4dd | 11219 | f->proc_sym = sym; |
11220 | f->proc_tree = NULL; | |
223f0f57 | 11221 | f->where = gfc_current_locus; |
7fd88f6e | 11222 | f->next = block->f2k_derived->finalizers; |
11223 | block->f2k_derived->finalizers = f; | |
223f0f57 | 11224 | |
11225 | first = false; | |
11226 | } | |
11227 | while (!last); | |
11228 | ||
11229 | return MATCH_YES; | |
11230 | } | |
36b0a1b0 | 11231 | |
11232 | ||
11233 | const ext_attr_t ext_attr_list[] = { | |
fa76a552 | 11234 | { "dllimport", EXT_ATTR_DLLIMPORT, "dllimport" }, |
11235 | { "dllexport", EXT_ATTR_DLLEXPORT, "dllexport" }, | |
11236 | { "cdecl", EXT_ATTR_CDECL, "cdecl" }, | |
11237 | { "stdcall", EXT_ATTR_STDCALL, "stdcall" }, | |
11238 | { "fastcall", EXT_ATTR_FASTCALL, "fastcall" }, | |
11239 | { "no_arg_check", EXT_ATTR_NO_ARG_CHECK, NULL }, | |
11240 | { NULL, EXT_ATTR_LAST, NULL } | |
36b0a1b0 | 11241 | }; |
11242 | ||
11243 | /* Match a !GCC$ ATTRIBUTES statement of the form: | |
11244 | !GCC$ ATTRIBUTES attribute-list :: var-name [, var-name] ... | |
11245 | When we come here, we have already matched the !GCC$ ATTRIBUTES string. | |
11246 | ||
11247 | TODO: We should support all GCC attributes using the same syntax for | |
11248 | the attribute list, i.e. the list in C | |
11249 | __attributes(( attribute-list )) | |
11250 | matches then | |
11251 | !GCC$ ATTRIBUTES attribute-list :: | |
11252 | Cf. c-parser.c's c_parser_attributes; the data can then directly be | |
11253 | saved into a TREE. | |
11254 | ||
11255 | As there is absolutely no risk of confusion, we should never return | |
11256 | MATCH_NO. */ | |
11257 | match | |
11258 | gfc_match_gcc_attributes (void) | |
8db94b3b | 11259 | { |
36b0a1b0 | 11260 | symbol_attribute attr; |
11261 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
11262 | unsigned id; | |
11263 | gfc_symbol *sym; | |
11264 | match m; | |
11265 | ||
11266 | gfc_clear_attr (&attr); | |
11267 | for(;;) | |
11268 | { | |
11269 | char ch; | |
11270 | ||
11271 | if (gfc_match_name (name) != MATCH_YES) | |
11272 | return MATCH_ERROR; | |
11273 | ||
11274 | for (id = 0; id < EXT_ATTR_LAST; id++) | |
11275 | if (strcmp (name, ext_attr_list[id].name) == 0) | |
11276 | break; | |
11277 | ||
11278 | if (id == EXT_ATTR_LAST) | |
11279 | { | |
11280 | gfc_error ("Unknown attribute in !GCC$ ATTRIBUTES statement at %C"); | |
11281 | return MATCH_ERROR; | |
11282 | } | |
11283 | ||
60e19868 | 11284 | if (!gfc_add_ext_attribute (&attr, (ext_attr_id_t)id, &gfc_current_locus)) |
36b0a1b0 | 11285 | return MATCH_ERROR; |
11286 | ||
11287 | gfc_gobble_whitespace (); | |
11288 | ch = gfc_next_ascii_char (); | |
11289 | if (ch == ':') | |
11290 | { | |
11291 | /* This is the successful exit condition for the loop. */ | |
11292 | if (gfc_next_ascii_char () == ':') | |
11293 | break; | |
11294 | } | |
11295 | ||
11296 | if (ch == ',') | |
11297 | continue; | |
11298 | ||
11299 | goto syntax; | |
11300 | } | |
11301 | ||
11302 | if (gfc_match_eos () == MATCH_YES) | |
11303 | goto syntax; | |
11304 | ||
11305 | for(;;) | |
11306 | { | |
11307 | m = gfc_match_name (name); | |
11308 | if (m != MATCH_YES) | |
11309 | return m; | |
11310 | ||
11311 | if (find_special (name, &sym, true)) | |
11312 | return MATCH_ERROR; | |
8db94b3b | 11313 | |
36b0a1b0 | 11314 | sym->attr.ext_attr |= attr.ext_attr; |
11315 | ||
11316 | if (gfc_match_eos () == MATCH_YES) | |
11317 | break; | |
11318 | ||
11319 | if (gfc_match_char (',') != MATCH_YES) | |
11320 | goto syntax; | |
11321 | } | |
11322 | ||
11323 | return MATCH_YES; | |
11324 | ||
11325 | syntax: | |
11326 | gfc_error ("Syntax error in !GCC$ ATTRIBUTES statement at %C"); | |
11327 | return MATCH_ERROR; | |
11328 | } | |
82841c8f | 11329 | |
11330 | ||
11331 | /* Match a !GCC$ UNROLL statement of the form: | |
11332 | !GCC$ UNROLL n | |
11333 | ||
11334 | The parameter n is the number of times we are supposed to unroll. | |
11335 | ||
11336 | When we come here, we have already matched the !GCC$ UNROLL string. */ | |
11337 | match | |
11338 | gfc_match_gcc_unroll (void) | |
11339 | { | |
11340 | int value; | |
11341 | ||
11342 | if (gfc_match_small_int (&value) == MATCH_YES) | |
11343 | { | |
11344 | if (value < 0 || value > USHRT_MAX) | |
11345 | { | |
11346 | gfc_error ("%<GCC unroll%> directive requires a" | |
11347 | " non-negative integral constant" | |
11348 | " less than or equal to %u at %C", | |
11349 | USHRT_MAX | |
11350 | ); | |
11351 | return MATCH_ERROR; | |
11352 | } | |
11353 | if (gfc_match_eos () == MATCH_YES) | |
11354 | { | |
11355 | directive_unroll = value == 0 ? 1 : value; | |
11356 | return MATCH_YES; | |
11357 | } | |
11358 | } | |
11359 | ||
11360 | gfc_error ("Syntax error in !GCC$ UNROLL directive at %C"); | |
11361 | return MATCH_ERROR; | |
11362 | } | |
f052211c | 11363 | |
dd2e9d21 | 11364 | /* Match a !GCC$ builtin (b) attributes simd flags if('target') form: |
f052211c | 11365 | |
11366 | The parameter b is name of a middle-end built-in. | |
dd2e9d21 | 11367 | FLAGS is optional and must be one of: |
11368 | - (inbranch) | |
11369 | - (notinbranch) | |
11370 | ||
11371 | IF('target') is optional and TARGET is a name of a multilib ABI. | |
f052211c | 11372 | |
11373 | When we come here, we have already matched the !GCC$ builtin string. */ | |
dd2e9d21 | 11374 | |
f052211c | 11375 | match |
11376 | gfc_match_gcc_builtin (void) | |
11377 | { | |
11378 | char builtin[GFC_MAX_SYMBOL_LEN + 1]; | |
dd2e9d21 | 11379 | char target[GFC_MAX_SYMBOL_LEN + 1]; |
f052211c | 11380 | |
11381 | if (gfc_match (" ( %n ) attributes simd", builtin) != MATCH_YES) | |
11382 | return MATCH_ERROR; | |
11383 | ||
11384 | gfc_simd_clause clause = SIMD_NONE; | |
11385 | if (gfc_match (" ( notinbranch ) ") == MATCH_YES) | |
11386 | clause = SIMD_NOTINBRANCH; | |
11387 | else if (gfc_match (" ( inbranch ) ") == MATCH_YES) | |
11388 | clause = SIMD_INBRANCH; | |
11389 | ||
dd2e9d21 | 11390 | if (gfc_match (" if ( '%n' ) ", target) == MATCH_YES) |
11391 | { | |
11392 | const char *abi = targetm.get_multilib_abi_name (); | |
11393 | if (abi == NULL || strcmp (abi, target) != 0) | |
11394 | return MATCH_YES; | |
11395 | } | |
11396 | ||
f052211c | 11397 | if (gfc_vectorized_builtins == NULL) |
11398 | gfc_vectorized_builtins = new hash_map<nofree_string_hash, int> (); | |
11399 | ||
11400 | char *r = XNEWVEC (char, strlen (builtin) + 32); | |
11401 | sprintf (r, "__builtin_%s", builtin); | |
11402 | ||
11403 | bool existed; | |
11404 | int &value = gfc_vectorized_builtins->get_or_insert (r, &existed); | |
11405 | value |= clause; | |
11406 | if (existed) | |
11407 | free (r); | |
11408 | ||
11409 | return MATCH_YES; | |
11410 | } |