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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 | { | |
889b0295 | 1502 | if (!gfc_notify_std (GFC_STD_F2018, |
1503 | "Character argument %qs at %L " | |
1504 | "must be length 1 because " | |
1505 | "procedure %qs is BIND(C)", | |
1506 | sym->name, &sym->declared_at, | |
1507 | sym->ns->proc_name->name)) | |
1508 | retval = false; | |
e4eda3ec | 1509 | } |
1510 | } | |
1511 | ||
c5d33754 | 1512 | /* We have to make sure that any param to a bind(c) routine does |
1513 | not have the allocatable, pointer, or optional attributes, | |
1514 | according to J3/04-007, section 5.1. */ | |
a435dc3a | 1515 | if (sym->attr.allocatable == 1 |
2e2156cf | 1516 | && !gfc_notify_std (GFC_STD_F2018, "Variable %qs at %L with " |
0d2b3c9c | 1517 | "ALLOCATABLE attribute in procedure %qs " |
a435dc3a | 1518 | "with BIND(C)", sym->name, |
1519 | &(sym->declared_at), | |
1520 | sym->ns->proc_name->name)) | |
1521 | retval = false; | |
1522 | ||
1523 | if (sym->attr.pointer == 1 | |
2e2156cf | 1524 | && !gfc_notify_std (GFC_STD_F2018, "Variable %qs at %L with " |
0d2b3c9c | 1525 | "POINTER attribute in procedure %qs " |
a435dc3a | 1526 | "with BIND(C)", sym->name, |
1527 | &(sym->declared_at), | |
1528 | sym->ns->proc_name->name)) | |
1529 | retval = false; | |
1530 | ||
1531 | if ((sym->attr.allocatable || sym->attr.pointer) && !sym->as) | |
c5d33754 | 1532 | { |
716da296 | 1533 | gfc_error ("Scalar variable %qs at %L with POINTER or " |
1534 | "ALLOCATABLE in procedure %qs with BIND(C) is not yet" | |
a435dc3a | 1535 | " supported", sym->name, &(sym->declared_at), |
c5d33754 | 1536 | sym->ns->proc_name->name); |
60e19868 | 1537 | retval = false; |
c5d33754 | 1538 | } |
1539 | ||
495e197c | 1540 | if (sym->attr.optional == 1 && sym->attr.value) |
c5d33754 | 1541 | { |
716da296 | 1542 | gfc_error ("Variable %qs at %L cannot have both the OPTIONAL " |
1543 | "and the VALUE attribute because procedure %qs " | |
495e197c | 1544 | "is BIND(C)", sym->name, &(sym->declared_at), |
c5d33754 | 1545 | sym->ns->proc_name->name); |
60e19868 | 1546 | retval = false; |
c5d33754 | 1547 | } |
495e197c | 1548 | else if (sym->attr.optional == 1 |
2e2156cf | 1549 | && !gfc_notify_std (GFC_STD_F2018, "Variable %qs " |
60e19868 | 1550 | "at %L with OPTIONAL attribute in " |
76e207a9 | 1551 | "procedure %qs which is BIND(C)", |
1552 | sym->name, &(sym->declared_at), | |
60e19868 | 1553 | sym->ns->proc_name->name)) |
1554 | retval = false; | |
c5d33754 | 1555 | |
1556 | /* Make sure that if it has the dimension attribute, that it is | |
9350ae4e | 1557 | either assumed size or explicit shape. Deferred shape is already |
1558 | covered by the pointer/allocatable attribute. */ | |
1559 | if (sym->as != NULL && sym->as->type == AS_ASSUMED_SHAPE | |
2e2156cf | 1560 | && !gfc_notify_std (GFC_STD_F2018, "Assumed-shape array %qs " |
60e19868 | 1561 | "at %L as dummy argument to the BIND(C) " |
2f7de6c1 | 1562 | "procedure %qs at %L", sym->name, |
76e207a9 | 1563 | &(sym->declared_at), |
1564 | sym->ns->proc_name->name, | |
60e19868 | 1565 | &(sym->ns->proc_name->declared_at))) |
1566 | retval = false; | |
c5d33754 | 1567 | } |
1568 | } | |
1569 | ||
1570 | return retval; | |
1571 | } | |
1572 | ||
1573 | ||
1de1b1a9 | 1574 | |
c5d33754 | 1575 | /* Function called by variable_decl() that adds a name to the symbol table. */ |
4ee9c684 | 1576 | |
60e19868 | 1577 | static bool |
3e715c81 | 1578 | build_sym (const char *name, gfc_charlen *cl, bool cl_deferred, |
1a9745d2 | 1579 | gfc_array_spec **as, locus *var_locus) |
4ee9c684 | 1580 | { |
1581 | symbol_attribute attr; | |
1582 | gfc_symbol *sym; | |
9b49c3cb | 1583 | int upper; |
7200bfee | 1584 | gfc_symtree *st; |
1585 | ||
1586 | /* Symbols in a submodule are host associated from the parent module or | |
1587 | submodules. Therefore, they can be overridden by declarations in the | |
1588 | submodule scope. Deal with this by attaching the existing symbol to | |
1589 | a new symtree and recycling the old symtree with a new symbol... */ | |
1590 | st = gfc_find_symtree (gfc_current_ns->sym_root, name); | |
1591 | if (st != NULL && gfc_state_stack->state == COMP_SUBMODULE | |
1592 | && st->n.sym != NULL | |
1593 | && st->n.sym->attr.host_assoc && st->n.sym->attr.used_in_submodule) | |
1594 | { | |
1595 | gfc_symtree *s = gfc_get_unique_symtree (gfc_current_ns); | |
1596 | s->n.sym = st->n.sym; | |
1597 | sym = gfc_new_symbol (name, gfc_current_ns); | |
4ee9c684 | 1598 | |
7200bfee | 1599 | |
1600 | st->n.sym = sym; | |
1601 | sym->refs++; | |
1602 | gfc_set_sym_referenced (sym); | |
1603 | } | |
1604 | /* ...Otherwise generate a new symtree and new symbol. */ | |
1605 | else if (gfc_get_symbol (name, NULL, &sym)) | |
60e19868 | 1606 | return false; |
4ee9c684 | 1607 | |
9b49c3cb | 1608 | /* Check if the name has already been defined as a type. The |
1609 | first letter of the symtree will be in upper case then. Of | |
1610 | course, this is only necessary if the upper case letter is | |
1611 | actually different. */ | |
1612 | ||
1613 | upper = TOUPPER(name[0]); | |
1614 | if (upper != name[0]) | |
1615 | { | |
1616 | char u_name[GFC_MAX_SYMBOL_LEN + 1]; | |
1617 | gfc_symtree *st; | |
9b49c3cb | 1618 | |
d8aad786 | 1619 | gcc_assert (strlen(name) <= GFC_MAX_SYMBOL_LEN); |
1620 | strcpy (u_name, name); | |
9b49c3cb | 1621 | u_name[0] = upper; |
1622 | ||
1623 | st = gfc_find_symtree (gfc_current_ns->sym_root, u_name); | |
1624 | ||
d7cd448a | 1625 | /* STRUCTURE types can alias symbol names */ |
1626 | if (st != 0 && st->n.sym->attr.flavor != FL_STRUCT) | |
9b49c3cb | 1627 | { |
1628 | gfc_error ("Symbol %qs at %C also declared as a type at %L", name, | |
1629 | &st->n.sym->declared_at); | |
1630 | return false; | |
1631 | } | |
1632 | } | |
1633 | ||
f6d0e37a | 1634 | /* Start updating the symbol table. Add basic type attribute if present. */ |
4ee9c684 | 1635 | if (current_ts.type != BT_UNKNOWN |
1a9745d2 | 1636 | && (sym->attr.implicit_type == 0 |
1637 | || !gfc_compare_types (&sym->ts, ¤t_ts)) | |
60e19868 | 1638 | && !gfc_add_type (sym, ¤t_ts, var_locus)) |
1639 | return false; | |
4ee9c684 | 1640 | |
1641 | if (sym->ts.type == BT_CHARACTER) | |
3e715c81 | 1642 | { |
1643 | sym->ts.u.cl = cl; | |
1644 | sym->ts.deferred = cl_deferred; | |
1645 | } | |
4ee9c684 | 1646 | |
1647 | /* Add dimension attribute if present. */ | |
60e19868 | 1648 | if (!gfc_set_array_spec (sym, *as, var_locus)) |
1649 | return false; | |
4ee9c684 | 1650 | *as = NULL; |
1651 | ||
1652 | /* Add attribute to symbol. The copy is so that we can reset the | |
1653 | dimension attribute. */ | |
1654 | attr = current_attr; | |
1655 | attr.dimension = 0; | |
aff518b0 | 1656 | attr.codimension = 0; |
4ee9c684 | 1657 | |
60e19868 | 1658 | if (!gfc_copy_attr (&sym->attr, &attr, var_locus)) |
1659 | return false; | |
4ee9c684 | 1660 | |
c5d33754 | 1661 | /* Finish any work that may need to be done for the binding label, |
1662 | if it's a bind(c). The bind(c) attr is found before the symbol | |
1663 | is made, and before the symbol name (for data decls), so the | |
1664 | current_ts is holding the binding label, or nothing if the | |
1665 | name= attr wasn't given. Therefore, test here if we're dealing | |
1666 | with a bind(c) and make sure the binding label is set correctly. */ | |
1667 | if (sym->attr.is_bind_c == 1) | |
1668 | { | |
7b2060ba | 1669 | if (!sym->binding_label) |
c5d33754 | 1670 | { |
825718f9 | 1671 | /* Set the binding label and verify that if a NAME= was specified |
1672 | then only one identifier was in the entity-decl-list. */ | |
76e207a9 | 1673 | if (!set_binding_label (&sym->binding_label, sym->name, |
60e19868 | 1674 | num_idents_on_line)) |
1675 | return false; | |
c5d33754 | 1676 | } |
1677 | } | |
1678 | ||
1679 | /* See if we know we're in a common block, and if it's a bind(c) | |
1680 | common then we need to make sure we're an interoperable type. */ | |
1681 | if (sym->attr.in_common == 1) | |
1682 | { | |
1683 | /* Test the common block object. */ | |
1684 | if (sym->common_block != NULL && sym->common_block->is_bind_c == 1 | |
1685 | && sym->ts.is_c_interop != 1) | |
1686 | { | |
bf79c656 | 1687 | gfc_error_now ("Variable %qs in common block %qs at %C " |
c5d33754 | 1688 | "must be declared with a C interoperable " |
bf79c656 | 1689 | "kind since common block %qs is BIND(C)", |
c5d33754 | 1690 | sym->name, sym->common_block->name, |
1691 | sym->common_block->name); | |
1692 | gfc_clear_error (); | |
1693 | } | |
1694 | } | |
1695 | ||
2457a77e | 1696 | sym->attr.implied_index = 0; |
1697 | ||
9d958d5b | 1698 | /* Use the parameter expressions for a parameterized derived type. */ |
1699 | if ((sym->ts.type == BT_DERIVED || sym->ts.type == BT_CLASS) | |
1700 | && sym->ts.u.derived->attr.pdt_type && type_param_spec_list) | |
1701 | sym->param_list = gfc_copy_actual_arglist (type_param_spec_list); | |
1702 | ||
fa102e56 | 1703 | if (sym->ts.type == BT_CLASS) |
e8393d49 | 1704 | return gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as); |
1de1b1a9 | 1705 | |
60e19868 | 1706 | return true; |
4ee9c684 | 1707 | } |
1708 | ||
1a9745d2 | 1709 | |
a270dc8e | 1710 | /* Set character constant to the given length. The constant will be padded or |
d1a39099 | 1711 | truncated. If we're inside an array constructor without a typespec, we |
1712 | additionally check that all elements have the same length; check_len -1 | |
1713 | means no checking. */ | |
a270dc8e | 1714 | |
1715 | void | |
bdfec5bf | 1716 | gfc_set_constant_character_len (gfc_charlen_t len, gfc_expr *expr, |
1717 | gfc_charlen_t check_len) | |
a270dc8e | 1718 | { |
c32f863c | 1719 | gfc_char_t *s; |
bdfec5bf | 1720 | gfc_charlen_t slen; |
a270dc8e | 1721 | |
00fff882 | 1722 | if (expr->ts.type != BT_CHARACTER) |
1723 | return; | |
6ade726e | 1724 | |
3badc59b | 1725 | if (expr->expr_type != EXPR_CONSTANT) |
1726 | { | |
1727 | gfc_error_now ("CHARACTER length must be a constant at %L", &expr->where); | |
1728 | return; | |
1729 | } | |
a270dc8e | 1730 | |
1731 | slen = expr->value.character.length; | |
1732 | if (len != slen) | |
1733 | { | |
c32f863c | 1734 | s = gfc_get_wide_string (len + 1); |
1735 | memcpy (s, expr->value.character.string, | |
1736 | MIN (len, slen) * sizeof (gfc_char_t)); | |
a270dc8e | 1737 | if (len > slen) |
c32f863c | 1738 | gfc_wide_memset (&s[slen], ' ', len - slen); |
1bfea7e8 | 1739 | |
fed21cc2 | 1740 | if (warn_character_truncation && slen > len) |
bf79c656 | 1741 | gfc_warning_now (OPT_Wcharacter_truncation, |
1742 | "CHARACTER expression at %L is being truncated " | |
bdfec5bf | 1743 | "(%ld/%ld)", &expr->where, |
1744 | (long) slen, (long) len); | |
1bfea7e8 | 1745 | |
1746 | /* Apply the standard by 'hand' otherwise it gets cleared for | |
1747 | initializers. */ | |
d1a39099 | 1748 | if (check_len != -1 && slen != check_len |
1749 | && !(gfc_option.allow_std & GFC_STD_GNU)) | |
1bfea7e8 | 1750 | gfc_error_now ("The CHARACTER elements of the array constructor " |
bdfec5bf | 1751 | "at %L must have the same length (%ld/%ld)", |
1752 | &expr->where, (long) slen, | |
1753 | (long) check_len); | |
1bfea7e8 | 1754 | |
89f528df | 1755 | s[len] = '\0'; |
434f0922 | 1756 | free (expr->value.character.string); |
a270dc8e | 1757 | expr->value.character.string = s; |
1758 | expr->value.character.length = len; | |
b6c59db3 | 1759 | /* If explicit representation was given, clear it |
1760 | as it is no longer needed after padding. */ | |
1761 | if (expr->representation.length) | |
1762 | { | |
1763 | expr->representation.length = 0; | |
1764 | free (expr->representation.string); | |
1765 | expr->representation.string = NULL; | |
1766 | } | |
a270dc8e | 1767 | } |
1768 | } | |
4ee9c684 | 1769 | |
3b6a4b41 | 1770 | |
e14bee04 | 1771 | /* Function to create and update the enumerator history |
3b6a4b41 | 1772 | using the information passed as arguments. |
e14bee04 | 1773 | Pointer "max_enum" is also updated, to point to |
1774 | enum history node containing largest initializer. | |
3b6a4b41 | 1775 | |
1776 | SYM points to the symbol node of enumerator. | |
f6d0e37a | 1777 | INIT points to its enumerator value. */ |
3b6a4b41 | 1778 | |
e14bee04 | 1779 | static void |
1a9745d2 | 1780 | create_enum_history (gfc_symbol *sym, gfc_expr *init) |
3b6a4b41 | 1781 | { |
1782 | enumerator_history *new_enum_history; | |
1783 | gcc_assert (sym != NULL && init != NULL); | |
1784 | ||
48d8ad5a | 1785 | new_enum_history = XCNEW (enumerator_history); |
3b6a4b41 | 1786 | |
1787 | new_enum_history->sym = sym; | |
1788 | new_enum_history->initializer = init; | |
1789 | new_enum_history->next = NULL; | |
1790 | ||
1791 | if (enum_history == NULL) | |
1792 | { | |
1793 | enum_history = new_enum_history; | |
1794 | max_enum = enum_history; | |
1795 | } | |
1796 | else | |
1797 | { | |
1798 | new_enum_history->next = enum_history; | |
1799 | enum_history = new_enum_history; | |
1800 | ||
e14bee04 | 1801 | if (mpz_cmp (max_enum->initializer->value.integer, |
3b6a4b41 | 1802 | new_enum_history->initializer->value.integer) < 0) |
1a9745d2 | 1803 | max_enum = new_enum_history; |
3b6a4b41 | 1804 | } |
1805 | } | |
1806 | ||
1807 | ||
e14bee04 | 1808 | /* Function to free enum kind history. */ |
3b6a4b41 | 1809 | |
e14bee04 | 1810 | void |
1a9745d2 | 1811 | gfc_free_enum_history (void) |
3b6a4b41 | 1812 | { |
e14bee04 | 1813 | enumerator_history *current = enum_history; |
1814 | enumerator_history *next; | |
3b6a4b41 | 1815 | |
1816 | while (current != NULL) | |
1817 | { | |
1818 | next = current->next; | |
434f0922 | 1819 | free (current); |
3b6a4b41 | 1820 | current = next; |
1821 | } | |
1822 | max_enum = NULL; | |
1823 | enum_history = NULL; | |
1824 | } | |
1825 | ||
1826 | ||
4ee9c684 | 1827 | /* Function called by variable_decl() that adds an initialization |
1828 | expression to a symbol. */ | |
1829 | ||
60e19868 | 1830 | static bool |
f6d0e37a | 1831 | add_init_expr_to_sym (const char *name, gfc_expr **initp, locus *var_locus) |
4ee9c684 | 1832 | { |
1833 | symbol_attribute attr; | |
1834 | gfc_symbol *sym; | |
1835 | gfc_expr *init; | |
1836 | ||
1837 | init = *initp; | |
36b0a1b0 | 1838 | if (find_special (name, &sym, false)) |
60e19868 | 1839 | return false; |
4ee9c684 | 1840 | |
1841 | attr = sym->attr; | |
1842 | ||
1843 | /* If this symbol is confirming an implicit parameter type, | |
1844 | then an initialization expression is not allowed. */ | |
1845 | if (attr.flavor == FL_PARAMETER | |
1846 | && sym->value != NULL | |
1847 | && *initp != NULL) | |
1848 | { | |
716da296 | 1849 | gfc_error ("Initializer not allowed for PARAMETER %qs at %C", |
4ee9c684 | 1850 | sym->name); |
60e19868 | 1851 | return false; |
4ee9c684 | 1852 | } |
1853 | ||
1854 | if (init == NULL) | |
1855 | { | |
1856 | /* An initializer is required for PARAMETER declarations. */ | |
1857 | if (attr.flavor == FL_PARAMETER) | |
1858 | { | |
1859 | gfc_error ("PARAMETER at %L is missing an initializer", var_locus); | |
60e19868 | 1860 | return false; |
4ee9c684 | 1861 | } |
1862 | } | |
1863 | else | |
1864 | { | |
1865 | /* If a variable appears in a DATA block, it cannot have an | |
b97f1a18 | 1866 | initializer. */ |
4ee9c684 | 1867 | if (sym->attr.data) |
1868 | { | |
716da296 | 1869 | gfc_error ("Variable %qs at %C with an initializer already " |
1a9745d2 | 1870 | "appears in a DATA statement", sym->name); |
60e19868 | 1871 | return false; |
4ee9c684 | 1872 | } |
1873 | ||
cca3db55 | 1874 | /* Check if the assignment can happen. This has to be put off |
23d075f4 | 1875 | until later for derived type variables and procedure pointers. */ |
d7cd448a | 1876 | if (!gfc_bt_struct (sym->ts.type) && !gfc_bt_struct (init->ts.type) |
1de1b1a9 | 1877 | && sym->ts.type != BT_CLASS && init->ts.type != BT_CLASS |
8db94b3b | 1878 | && !sym->attr.proc_pointer |
60e19868 | 1879 | && !gfc_check_assign_symbol (sym, NULL, init)) |
1880 | return false; | |
4ee9c684 | 1881 | |
eeebe20b | 1882 | if (sym->ts.type == BT_CHARACTER && sym->ts.u.cl |
da540712 | 1883 | && init->ts.type == BT_CHARACTER) |
a270dc8e | 1884 | { |
1885 | /* Update symbol character length according initializer. */ | |
60e19868 | 1886 | if (!gfc_check_assign_symbol (sym, NULL, init)) |
1887 | return false; | |
da540712 | 1888 | |
eeebe20b | 1889 | if (sym->ts.u.cl->length == NULL) |
a270dc8e | 1890 | { |
9f4d9f83 | 1891 | gfc_charlen_t clen; |
f6d0e37a | 1892 | /* If there are multiple CHARACTER variables declared on the |
1893 | same line, we don't want them to share the same length. */ | |
d270ce52 | 1894 | sym->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
e9c873a4 | 1895 | |
03c2a028 | 1896 | if (sym->attr.flavor == FL_PARAMETER) |
1897 | { | |
1898 | if (init->expr_type == EXPR_CONSTANT) | |
1899 | { | |
1900 | clen = init->value.character.length; | |
126387b5 | 1901 | sym->ts.u.cl->length |
9f4d9f83 | 1902 | = gfc_get_int_expr (gfc_charlen_int_kind, |
126387b5 | 1903 | NULL, clen); |
03c2a028 | 1904 | } |
1905 | else if (init->expr_type == EXPR_ARRAY) | |
1906 | { | |
fc9b0d53 | 1907 | if (init->ts.u.cl && init->ts.u.cl->length) |
cde225a2 | 1908 | { |
1909 | const gfc_expr *length = init->ts.u.cl->length; | |
1910 | if (length->expr_type != EXPR_CONSTANT) | |
1911 | { | |
1912 | gfc_error ("Cannot initialize parameter array " | |
1913 | "at %L " | |
1914 | "with variable length elements", | |
1915 | &sym->declared_at); | |
1916 | return false; | |
1917 | } | |
1918 | clen = mpz_get_si (length->value.integer); | |
1919 | } | |
9123b22a | 1920 | else if (init->value.constructor) |
1921 | { | |
1922 | gfc_constructor *c; | |
76e207a9 | 1923 | c = gfc_constructor_first (init->value.constructor); |
9123b22a | 1924 | clen = c->expr->value.character.length; |
1925 | } | |
1926 | else | |
1927 | gcc_unreachable (); | |
126387b5 | 1928 | sym->ts.u.cl->length |
9f4d9f83 | 1929 | = gfc_get_int_expr (gfc_charlen_int_kind, |
126387b5 | 1930 | NULL, clen); |
03c2a028 | 1931 | } |
eeebe20b | 1932 | else if (init->ts.u.cl && init->ts.u.cl->length) |
1933 | sym->ts.u.cl->length = | |
df378257 | 1934 | gfc_copy_expr (init->ts.u.cl->length); |
03c2a028 | 1935 | } |
a270dc8e | 1936 | } |
1937 | /* Update initializer character length according symbol. */ | |
eeebe20b | 1938 | else if (sym->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
a270dc8e | 1939 | { |
f8e2139b | 1940 | if (!gfc_specification_expr (sym->ts.u.cl->length)) |
1941 | return false; | |
1942 | ||
90ace78f | 1943 | int k = gfc_validate_kind (BT_INTEGER, gfc_charlen_int_kind, |
1944 | false); | |
1945 | /* resolve_charlen will complain later on if the length | |
1946 | is too large. Just skeep the initialization in that case. */ | |
1947 | if (mpz_cmp (sym->ts.u.cl->length->value.integer, | |
1948 | gfc_integer_kinds[k].huge) <= 0) | |
a270dc8e | 1949 | { |
90ace78f | 1950 | HOST_WIDE_INT len |
1951 | = gfc_mpz_get_hwi (sym->ts.u.cl->length->value.integer); | |
1952 | ||
1953 | if (init->expr_type == EXPR_CONSTANT) | |
1954 | gfc_set_constant_character_len (len, init, -1); | |
1955 | else if (init->expr_type == EXPR_ARRAY) | |
1956 | { | |
1957 | gfc_constructor *c; | |
126387b5 | 1958 | |
90ace78f | 1959 | /* Build a new charlen to prevent simplification from |
1960 | deleting the length before it is resolved. */ | |
1961 | init->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); | |
1962 | init->ts.u.cl->length | |
1963 | = gfc_copy_expr (sym->ts.u.cl->length); | |
39908fd9 | 1964 | |
90ace78f | 1965 | for (c = gfc_constructor_first (init->value.constructor); |
1966 | c; c = gfc_constructor_next (c)) | |
1967 | gfc_set_constant_character_len (len, c->expr, -1); | |
1968 | } | |
a270dc8e | 1969 | } |
1970 | } | |
1971 | } | |
1972 | ||
ae2864a8 | 1973 | /* If sym is implied-shape, set its upper bounds from init. */ |
1974 | if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension | |
1975 | && sym->as->type == AS_IMPLIED_SHAPE) | |
1976 | { | |
1977 | int dim; | |
1978 | ||
1979 | if (init->rank == 0) | |
1980 | { | |
1981 | gfc_error ("Can't initialize implied-shape array at %L" | |
1982 | " with scalar", &sym->declared_at); | |
60e19868 | 1983 | return false; |
ae2864a8 | 1984 | } |
ae2864a8 | 1985 | |
1986 | /* Shape should be present, we get an initialization expression. */ | |
1987 | gcc_assert (init->shape); | |
1988 | ||
1989 | for (dim = 0; dim < sym->as->rank; ++dim) | |
1990 | { | |
1991 | int k; | |
0c0c5469 | 1992 | gfc_expr *e, *lower; |
8db94b3b | 1993 | |
ae2864a8 | 1994 | lower = sym->as->lower[dim]; |
0c0c5469 | 1995 | |
76e207a9 | 1996 | /* If the lower bound is an array element from another |
0c0c5469 | 1997 | parameterized array, then it is marked with EXPR_VARIABLE and |
1998 | is an initialization expression. Try to reduce it. */ | |
1999 | if (lower->expr_type == EXPR_VARIABLE) | |
2000 | gfc_reduce_init_expr (lower); | |
2001 | ||
2002 | if (lower->expr_type == EXPR_CONSTANT) | |
2003 | { | |
2004 | /* All dimensions must be without upper bound. */ | |
2005 | gcc_assert (!sym->as->upper[dim]); | |
2006 | ||
2007 | k = lower->ts.kind; | |
2008 | e = gfc_get_constant_expr (BT_INTEGER, k, &sym->declared_at); | |
2009 | mpz_add (e->value.integer, lower->value.integer, | |
2010 | init->shape[dim]); | |
2011 | mpz_sub_ui (e->value.integer, e->value.integer, 1); | |
2012 | sym->as->upper[dim] = e; | |
2013 | } | |
2014 | else | |
ae2864a8 | 2015 | { |
2016 | gfc_error ("Non-constant lower bound in implied-shape" | |
2017 | " declaration at %L", &lower->where); | |
60e19868 | 2018 | return false; |
ae2864a8 | 2019 | } |
ae2864a8 | 2020 | } |
2021 | ||
2022 | sym->as->type = AS_EXPLICIT; | |
2023 | } | |
2024 | ||
c5d33754 | 2025 | /* Need to check if the expression we initialized this |
2026 | to was one of the iso_c_binding named constants. If so, | |
2027 | and we're a parameter (constant), let it be iso_c. | |
2028 | For example: | |
2029 | integer(c_int), parameter :: my_int = c_int | |
2030 | integer(my_int) :: my_int_2 | |
2031 | If we mark my_int as iso_c (since we can see it's value | |
2032 | is equal to one of the named constants), then my_int_2 | |
2033 | will be considered C interoperable. */ | |
d7cd448a | 2034 | if (sym->ts.type != BT_CHARACTER && !gfc_bt_struct (sym->ts.type)) |
c5d33754 | 2035 | { |
2036 | sym->ts.is_iso_c |= init->ts.is_iso_c; | |
2037 | sym->ts.is_c_interop |= init->ts.is_c_interop; | |
2038 | /* attr bits needed for module files. */ | |
2039 | sym->attr.is_iso_c |= init->ts.is_iso_c; | |
2040 | sym->attr.is_c_interop |= init->ts.is_c_interop; | |
2041 | if (init->ts.is_iso_c) | |
2042 | sym->ts.f90_type = init->ts.f90_type; | |
2043 | } | |
126387b5 | 2044 | |
4ee9c684 | 2045 | /* Add initializer. Make sure we keep the ranks sane. */ |
2046 | if (sym->attr.dimension && init->rank == 0) | |
7baa3fb4 | 2047 | { |
2048 | mpz_t size; | |
2049 | gfc_expr *array; | |
7baa3fb4 | 2050 | int n; |
2051 | if (sym->attr.flavor == FL_PARAMETER | |
2052 | && init->expr_type == EXPR_CONSTANT | |
60e19868 | 2053 | && spec_size (sym->as, &size) |
7baa3fb4 | 2054 | && mpz_cmp_si (size, 0) > 0) |
2055 | { | |
126387b5 | 2056 | array = gfc_get_array_expr (init->ts.type, init->ts.kind, |
2057 | &init->where); | |
7baa3fb4 | 2058 | for (n = 0; n < (int)mpz_get_si (size); n++) |
126387b5 | 2059 | gfc_constructor_append_expr (&array->value.constructor, |
2060 | n == 0 | |
2061 | ? init | |
2062 | : gfc_copy_expr (init), | |
2063 | &init->where); | |
8db94b3b | 2064 | |
7baa3fb4 | 2065 | array->shape = gfc_get_shape (sym->as->rank); |
2066 | for (n = 0; n < sym->as->rank; n++) | |
2067 | spec_dimen_size (sym->as, n, &array->shape[n]); | |
2068 | ||
2069 | init = array; | |
2070 | mpz_clear (size); | |
2071 | } | |
2072 | init->rank = sym->as->rank; | |
2073 | } | |
4ee9c684 | 2074 | |
2075 | sym->value = init; | |
3cd3c667 | 2076 | if (sym->attr.save == SAVE_NONE) |
2077 | sym->attr.save = SAVE_IMPLICIT; | |
4ee9c684 | 2078 | *initp = NULL; |
2079 | } | |
2080 | ||
60e19868 | 2081 | return true; |
4ee9c684 | 2082 | } |
2083 | ||
2084 | ||
2085 | /* Function called by variable_decl() that adds a name to a structure | |
2086 | being built. */ | |
2087 | ||
60e19868 | 2088 | static bool |
1a9745d2 | 2089 | build_struct (const char *name, gfc_charlen *cl, gfc_expr **init, |
2090 | gfc_array_spec **as) | |
4ee9c684 | 2091 | { |
d7cd448a | 2092 | gfc_state_data *s; |
4ee9c684 | 2093 | gfc_component *c; |
2094 | ||
53d2e124 | 2095 | /* F03:C438/C439. If the current symbol is of the same derived type that we're |
4ee9c684 | 2096 | constructing, it must have the pointer attribute. */ |
53d2e124 | 2097 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
eeebe20b | 2098 | && current_ts.u.derived == gfc_current_block () |
4ee9c684 | 2099 | && current_attr.pointer == 0) |
2100 | { | |
dd7553fe | 2101 | if (current_attr.allocatable |
2102 | && !gfc_notify_std(GFC_STD_F2008, "Component at %C " | |
2103 | "must have the POINTER attribute")) | |
2104 | { | |
2105 | return false; | |
2106 | } | |
2107 | else if (current_attr.allocatable == 0) | |
2108 | { | |
abfb4be5 | 2109 | gfc_error ("Component at %C must have the POINTER attribute"); |
2110 | return false; | |
2111 | } | |
4ee9c684 | 2112 | } |
abfb4be5 | 2113 | |
2114 | /* F03:C437. */ | |
2115 | if (current_ts.type == BT_CLASS | |
2116 | && !(current_attr.pointer || current_attr.allocatable)) | |
2117 | { | |
2118 | gfc_error ("Component %qs with CLASS at %C must be allocatable " | |
2119 | "or pointer", name); | |
2120 | return false; | |
dd7553fe | 2121 | } |
4ee9c684 | 2122 | |
1a9745d2 | 2123 | if (gfc_current_block ()->attr.pointer && (*as)->rank != 0) |
4ee9c684 | 2124 | { |
2125 | if ((*as)->type != AS_DEFERRED && (*as)->type != AS_EXPLICIT) | |
2126 | { | |
2127 | gfc_error ("Array component of structure at %C must have explicit " | |
2128 | "or deferred shape"); | |
60e19868 | 2129 | return false; |
4ee9c684 | 2130 | } |
2131 | } | |
2132 | ||
d7cd448a | 2133 | /* If we are in a nested union/map definition, gfc_add_component will not |
2134 | properly find repeated components because: | |
7d7125df | 2135 | (i) gfc_add_component does a flat search, where components of unions |
d7cd448a | 2136 | and maps are implicity chained so nested components may conflict. |
2137 | (ii) Unions and maps are not linked as components of their parent | |
2138 | structures until after they are parsed. | |
2139 | For (i) we use gfc_find_component which searches recursively, and for (ii) | |
2140 | we search each block directly from the parse stack until we find the top | |
2141 | level structure. */ | |
2142 | ||
2143 | s = gfc_state_stack; | |
2144 | if (s->state == COMP_UNION || s->state == COMP_MAP) | |
2145 | { | |
2146 | while (s->state == COMP_UNION || gfc_comp_struct (s->state)) | |
2147 | { | |
2148 | c = gfc_find_component (s->sym, name, true, true, NULL); | |
2149 | if (c != NULL) | |
2150 | { | |
1b7008c4 | 2151 | gfc_error_now ("Component %qs at %C already declared at %L", |
d7cd448a | 2152 | name, &c->loc); |
2153 | return false; | |
2154 | } | |
2155 | /* Break after we've searched the entire chain. */ | |
2156 | if (s->state == COMP_DERIVED || s->state == COMP_STRUCTURE) | |
2157 | break; | |
2158 | s = s->previous; | |
2159 | } | |
2160 | } | |
2161 | ||
60e19868 | 2162 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
2163 | return false; | |
4ee9c684 | 2164 | |
2165 | c->ts = current_ts; | |
eeebe20b | 2166 | if (c->ts.type == BT_CHARACTER) |
2167 | c->ts.u.cl = cl; | |
9d958d5b | 2168 | |
2169 | if (c->ts.type != BT_CLASS && c->ts.type != BT_DERIVED | |
f0efd2e8 | 2170 | && (c->ts.kind == 0 || c->ts.type == BT_CHARACTER) |
2171 | && saved_kind_expr != NULL) | |
9d958d5b | 2172 | c->kind_expr = gfc_copy_expr (saved_kind_expr); |
2173 | ||
3be2b8d5 | 2174 | c->attr = current_attr; |
4ee9c684 | 2175 | |
2176 | c->initializer = *init; | |
2177 | *init = NULL; | |
2178 | ||
2179 | c->as = *as; | |
2180 | if (c->as != NULL) | |
aff518b0 | 2181 | { |
2182 | if (c->as->corank) | |
2183 | c->attr.codimension = 1; | |
2184 | if (c->as->rank) | |
2185 | c->attr.dimension = 1; | |
2186 | } | |
4ee9c684 | 2187 | *as = NULL; |
2188 | ||
36d310d0 | 2189 | gfc_apply_init (&c->ts, &c->attr, c->initializer); |
a2f51d5f | 2190 | |
4ee9c684 | 2191 | /* Check array components. */ |
3be2b8d5 | 2192 | if (!c->attr.dimension) |
b3704193 | 2193 | goto scalar; |
4ee9c684 | 2194 | |
3be2b8d5 | 2195 | if (c->attr.pointer) |
4ee9c684 | 2196 | { |
2197 | if (c->as->type != AS_DEFERRED) | |
2198 | { | |
2294b616 | 2199 | gfc_error ("Pointer array component of structure at %C must have a " |
2200 | "deferred shape"); | |
2fa20713 | 2201 | return false; |
2294b616 | 2202 | } |
2203 | } | |
3be2b8d5 | 2204 | else if (c->attr.allocatable) |
2294b616 | 2205 | { |
2206 | if (c->as->type != AS_DEFERRED) | |
2207 | { | |
2208 | gfc_error ("Allocatable component of structure at %C must have a " | |
2209 | "deferred shape"); | |
2fa20713 | 2210 | return false; |
4ee9c684 | 2211 | } |
2212 | } | |
2213 | else | |
2214 | { | |
2215 | if (c->as->type != AS_EXPLICIT) | |
2216 | { | |
1a9745d2 | 2217 | gfc_error ("Array component of structure at %C must have an " |
2218 | "explicit shape"); | |
2fa20713 | 2219 | return false; |
4ee9c684 | 2220 | } |
2221 | } | |
2222 | ||
b3704193 | 2223 | scalar: |
2224 | if (c->ts.type == BT_CLASS) | |
2fa20713 | 2225 | return gfc_build_class_symbol (&c->ts, &c->attr, &c->as); |
431a19be | 2226 | |
9d958d5b | 2227 | if (c->attr.pdt_kind || c->attr.pdt_len) |
2228 | { | |
2229 | gfc_symbol *sym; | |
2230 | gfc_find_symbol (c->name, gfc_current_block ()->f2k_derived, | |
2231 | 0, &sym); | |
2232 | if (sym == NULL) | |
2233 | { | |
2234 | gfc_error ("Type parameter %qs at %C has no corresponding entry " | |
2235 | "in the type parameter name list at %L", | |
2236 | c->name, &gfc_current_block ()->declared_at); | |
2237 | return false; | |
2238 | } | |
2239 | sym->ts = c->ts; | |
2240 | sym->attr.pdt_kind = c->attr.pdt_kind; | |
2241 | sym->attr.pdt_len = c->attr.pdt_len; | |
2242 | if (c->initializer) | |
2243 | sym->value = gfc_copy_expr (c->initializer); | |
2244 | sym->attr.flavor = FL_VARIABLE; | |
2245 | } | |
2246 | ||
2247 | if ((c->ts.type == BT_DERIVED || c->ts.type == BT_CLASS) | |
2248 | && c->ts.u.derived && c->ts.u.derived->attr.pdt_template | |
2249 | && decl_type_param_list) | |
2250 | c->param_list = gfc_copy_actual_arglist (decl_type_param_list); | |
2251 | ||
2fa20713 | 2252 | return true; |
4ee9c684 | 2253 | } |
2254 | ||
2255 | ||
2256 | /* Match a 'NULL()', and possibly take care of some side effects. */ | |
2257 | ||
2258 | match | |
1a9745d2 | 2259 | gfc_match_null (gfc_expr **result) |
4ee9c684 | 2260 | { |
2261 | gfc_symbol *sym; | |
f9d34e9a | 2262 | match m, m2 = MATCH_NO; |
4ee9c684 | 2263 | |
f9d34e9a | 2264 | if ((m = gfc_match (" null ( )")) == MATCH_ERROR) |
2265 | return MATCH_ERROR; | |
2266 | ||
2267 | if (m == MATCH_NO) | |
2268 | { | |
2269 | locus old_loc; | |
2270 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
2271 | ||
d780a64b | 2272 | if ((m2 = gfc_match (" null (")) != MATCH_YES) |
f9d34e9a | 2273 | return m2; |
2274 | ||
2275 | old_loc = gfc_current_locus; | |
2276 | if ((m2 = gfc_match (" %n ) ", name)) == MATCH_ERROR) | |
2277 | return MATCH_ERROR; | |
2278 | if (m2 != MATCH_YES | |
2279 | && ((m2 = gfc_match (" mold = %n )", name)) == MATCH_ERROR)) | |
2280 | return MATCH_ERROR; | |
2281 | if (m2 == MATCH_NO) | |
2282 | { | |
2283 | gfc_current_locus = old_loc; | |
2284 | return MATCH_NO; | |
2285 | } | |
2286 | } | |
4ee9c684 | 2287 | |
2288 | /* The NULL symbol now has to be/become an intrinsic function. */ | |
2289 | if (gfc_get_symbol ("null", NULL, &sym)) | |
2290 | { | |
2291 | gfc_error ("NULL() initialization at %C is ambiguous"); | |
2292 | return MATCH_ERROR; | |
2293 | } | |
2294 | ||
2295 | gfc_intrinsic_symbol (sym); | |
2296 | ||
2297 | if (sym->attr.proc != PROC_INTRINSIC | |
ddf8ce2d | 2298 | && !(sym->attr.use_assoc && sym->attr.intrinsic) |
60e19868 | 2299 | && (!gfc_add_procedure(&sym->attr, PROC_INTRINSIC, sym->name, NULL) |
2300 | || !gfc_add_function (&sym->attr, sym->name, NULL))) | |
4ee9c684 | 2301 | return MATCH_ERROR; |
2302 | ||
126387b5 | 2303 | *result = gfc_get_null_expr (&gfc_current_locus); |
4ee9c684 | 2304 | |
f9d34e9a | 2305 | /* Invalid per F2008, C512. */ |
2306 | if (m2 == MATCH_YES) | |
2307 | { | |
2308 | gfc_error ("NULL() initialization at %C may not have MOLD"); | |
2309 | return MATCH_ERROR; | |
2310 | } | |
2311 | ||
4ee9c684 | 2312 | return MATCH_YES; |
2313 | } | |
2314 | ||
2315 | ||
23d075f4 | 2316 | /* Match the initialization expr for a data pointer or procedure pointer. */ |
2317 | ||
2318 | static match | |
2319 | match_pointer_init (gfc_expr **init, int procptr) | |
2320 | { | |
2321 | match m; | |
2322 | ||
d7cd448a | 2323 | if (gfc_pure (NULL) && !gfc_comp_struct (gfc_state_stack->state)) |
23d075f4 | 2324 | { |
2325 | gfc_error ("Initialization of pointer at %C is not allowed in " | |
2326 | "a PURE procedure"); | |
2327 | return MATCH_ERROR; | |
2328 | } | |
c77badf3 | 2329 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
23d075f4 | 2330 | |
df084314 | 2331 | /* Match NULL() initialization. */ |
23d075f4 | 2332 | m = gfc_match_null (init); |
2333 | if (m != MATCH_NO) | |
2334 | return m; | |
2335 | ||
2336 | /* Match non-NULL initialization. */ | |
f3efaada | 2337 | gfc_matching_ptr_assignment = !procptr; |
23d075f4 | 2338 | gfc_matching_procptr_assignment = procptr; |
2339 | m = gfc_match_rvalue (init); | |
f3efaada | 2340 | gfc_matching_ptr_assignment = 0; |
23d075f4 | 2341 | gfc_matching_procptr_assignment = 0; |
2342 | if (m == MATCH_ERROR) | |
2343 | return MATCH_ERROR; | |
2344 | else if (m == MATCH_NO) | |
2345 | { | |
2346 | gfc_error ("Error in pointer initialization at %C"); | |
2347 | return MATCH_ERROR; | |
2348 | } | |
2349 | ||
7c94d8e5 | 2350 | if (!procptr && !gfc_resolve_expr (*init)) |
2351 | return MATCH_ERROR; | |
8db94b3b | 2352 | |
60e19868 | 2353 | if (!gfc_notify_std (GFC_STD_F2008, "non-NULL pointer " |
2354 | "initialization at %C")) | |
23d075f4 | 2355 | return MATCH_ERROR; |
2356 | ||
2357 | return MATCH_YES; | |
2358 | } | |
2359 | ||
2360 | ||
60e19868 | 2361 | static bool |
f3e89339 | 2362 | check_function_name (char *name) |
2363 | { | |
2364 | /* In functions that have a RESULT variable defined, the function name always | |
2365 | refers to function calls. Therefore, the name is not allowed to appear in | |
2366 | specification statements. When checking this, be careful about | |
2367 | 'hidden' procedure pointer results ('ppr@'). */ | |
2368 | ||
2369 | if (gfc_current_state () == COMP_FUNCTION) | |
2370 | { | |
2371 | gfc_symbol *block = gfc_current_block (); | |
2372 | if (block && block->result && block->result != block | |
2373 | && strcmp (block->result->name, "ppr@") != 0 | |
2374 | && strcmp (block->name, name) == 0) | |
2375 | { | |
2c6ca8fc | 2376 | gfc_error ("RESULT variable %qs at %L prohibits FUNCTION name %qs at %C " |
2377 | "from appearing in a specification statement", | |
2378 | block->result->name, &block->result->declared_at, name); | |
60e19868 | 2379 | return false; |
f3e89339 | 2380 | } |
2381 | } | |
2382 | ||
60e19868 | 2383 | return true; |
f3e89339 | 2384 | } |
2385 | ||
2386 | ||
4ee9c684 | 2387 | /* Match a variable name with an optional initializer. When this |
2388 | subroutine is called, a variable is expected to be parsed next. | |
2389 | Depending on what is happening at the moment, updates either the | |
2390 | symbol table or the current interface. */ | |
2391 | ||
2392 | static match | |
3923b69f | 2393 | variable_decl (int elem) |
4ee9c684 | 2394 | { |
2395 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8ef2cf76 | 2396 | static unsigned int fill_id = 0; |
4ee9c684 | 2397 | gfc_expr *initializer, *char_len; |
2398 | gfc_array_spec *as; | |
b549d2a5 | 2399 | gfc_array_spec *cp_as; /* Extra copy for Cray Pointees. */ |
4ee9c684 | 2400 | gfc_charlen *cl; |
3e715c81 | 2401 | bool cl_deferred; |
4ee9c684 | 2402 | locus var_locus; |
2403 | match m; | |
60e19868 | 2404 | bool t; |
b549d2a5 | 2405 | gfc_symbol *sym; |
4ee9c684 | 2406 | |
2407 | initializer = NULL; | |
2408 | as = NULL; | |
b549d2a5 | 2409 | cp_as = NULL; |
4ee9c684 | 2410 | |
2411 | /* When we get here, we've just matched a list of attributes and | |
2412 | maybe a type and a double colon. The next thing we expect to see | |
2413 | is the name of the symbol. */ | |
8ef2cf76 | 2414 | |
2415 | /* If we are parsing a structure with legacy support, we allow the symbol | |
2416 | name to be '%FILL' which gives it an anonymous (inaccessible) name. */ | |
2417 | m = MATCH_NO; | |
2418 | gfc_gobble_whitespace (); | |
2419 | if (gfc_peek_ascii_char () == '%') | |
2420 | { | |
2421 | gfc_next_ascii_char (); | |
2422 | m = gfc_match ("fill"); | |
2423 | } | |
2424 | ||
4ee9c684 | 2425 | if (m != MATCH_YES) |
8ef2cf76 | 2426 | { |
2427 | m = gfc_match_name (name); | |
2428 | if (m != MATCH_YES) | |
2429 | goto cleanup; | |
2430 | } | |
2431 | ||
2432 | else | |
2433 | { | |
2434 | m = MATCH_ERROR; | |
2435 | if (gfc_current_state () != COMP_STRUCTURE) | |
2436 | { | |
2437 | if (flag_dec_structure) | |
2438 | gfc_error ("%qs not allowed outside STRUCTURE at %C", "%FILL"); | |
2439 | else | |
2440 | gfc_error ("%qs at %C is a DEC extension, enable with " | |
2441 | "%<-fdec-structure%>", "%FILL"); | |
2442 | goto cleanup; | |
2443 | } | |
2444 | ||
2445 | if (attr_seen) | |
2446 | { | |
2447 | gfc_error ("%qs entity cannot have attributes at %C", "%FILL"); | |
2448 | goto cleanup; | |
2449 | } | |
2450 | ||
2451 | /* %FILL components are given invalid fortran names. */ | |
2452 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "%%FILL%u", fill_id++); | |
2453 | m = MATCH_YES; | |
2454 | } | |
4ee9c684 | 2455 | |
cbb9e6aa | 2456 | var_locus = gfc_current_locus; |
4ee9c684 | 2457 | |
2458 | /* Now we could see the optional array spec. or character length. */ | |
aff518b0 | 2459 | m = gfc_match_array_spec (&as, true, true); |
eae6c6c1 | 2460 | if (m == MATCH_ERROR) |
4ee9c684 | 2461 | goto cleanup; |
3b6a4b41 | 2462 | |
4ee9c684 | 2463 | if (m == MATCH_NO) |
2464 | as = gfc_copy_array_spec (current_as); | |
9b58b4c7 | 2465 | else if (current_as |
60e19868 | 2466 | && !merge_array_spec (current_as, as, true)) |
9b58b4c7 | 2467 | { |
2468 | m = MATCH_ERROR; | |
2469 | goto cleanup; | |
2470 | } | |
4ee9c684 | 2471 | |
829d7a08 | 2472 | if (flag_cray_pointer) |
eae6c6c1 | 2473 | cp_as = gfc_copy_array_spec (as); |
2474 | ||
ae2864a8 | 2475 | /* At this point, we know for sure if the symbol is PARAMETER and can thus |
2476 | determine (and check) whether it can be implied-shape. If it | |
f4d3c071 | 2477 | was parsed as assumed-size, change it because PARAMETERs cannot |
fc386590 | 2478 | be assumed-size. |
2479 | ||
2480 | An explicit-shape-array cannot appear under several conditions. | |
2481 | That check is done here as well. */ | |
ae2864a8 | 2482 | if (as) |
2483 | { | |
2484 | if (as->type == AS_IMPLIED_SHAPE && current_attr.flavor != FL_PARAMETER) | |
2485 | { | |
2486 | m = MATCH_ERROR; | |
716da296 | 2487 | gfc_error ("Non-PARAMETER symbol %qs at %L can't be implied-shape", |
ae2864a8 | 2488 | name, &var_locus); |
2489 | goto cleanup; | |
2490 | } | |
2491 | ||
2492 | if (as->type == AS_ASSUMED_SIZE && as->rank == 1 | |
2493 | && current_attr.flavor == FL_PARAMETER) | |
2494 | as->type = AS_IMPLIED_SHAPE; | |
2495 | ||
2496 | if (as->type == AS_IMPLIED_SHAPE | |
76e207a9 | 2497 | && !gfc_notify_std (GFC_STD_F2008, "Implied-shape array at %L", |
60e19868 | 2498 | &var_locus)) |
ae2864a8 | 2499 | { |
2500 | m = MATCH_ERROR; | |
2501 | goto cleanup; | |
2502 | } | |
fc386590 | 2503 | |
2504 | /* F2018:C830 (R816) An explicit-shape-spec whose bounds are not | |
2505 | constant expressions shall appear only in a subprogram, derived | |
2506 | type definition, BLOCK construct, or interface body. */ | |
2507 | if (as->type == AS_EXPLICIT | |
2508 | && gfc_current_state () != COMP_BLOCK | |
2509 | && gfc_current_state () != COMP_DERIVED | |
2510 | && gfc_current_state () != COMP_FUNCTION | |
2511 | && gfc_current_state () != COMP_INTERFACE | |
2512 | && gfc_current_state () != COMP_SUBROUTINE) | |
2513 | { | |
2514 | gfc_expr *e; | |
2515 | bool not_constant = false; | |
2516 | ||
2517 | for (int i = 0; i < as->rank; i++) | |
2518 | { | |
2519 | e = gfc_copy_expr (as->lower[i]); | |
2520 | gfc_resolve_expr (e); | |
2521 | gfc_simplify_expr (e, 0); | |
2522 | if (e && (e->expr_type != EXPR_CONSTANT)) | |
2523 | { | |
2524 | not_constant = true; | |
2525 | break; | |
2526 | } | |
2527 | gfc_free_expr (e); | |
2528 | ||
2529 | e = gfc_copy_expr (as->upper[i]); | |
2530 | gfc_resolve_expr (e); | |
2531 | gfc_simplify_expr (e, 0); | |
2532 | if (e && (e->expr_type != EXPR_CONSTANT)) | |
2533 | { | |
2534 | not_constant = true; | |
2535 | break; | |
2536 | } | |
2537 | gfc_free_expr (e); | |
2538 | } | |
2539 | ||
2540 | if (not_constant) | |
4bd908ff | 2541 | { |
fc386590 | 2542 | gfc_error ("Explicit shaped array with nonconstant bounds at %C"); |
2543 | m = MATCH_ERROR; | |
2544 | goto cleanup; | |
2545 | } | |
2546 | } | |
09ebadea | 2547 | if (as->type == AS_EXPLICIT) |
2548 | { | |
2549 | for (int i = 0; i < as->rank; i++) | |
2550 | { | |
2551 | gfc_expr *e, *n; | |
2552 | e = as->lower[i]; | |
2553 | if (e->expr_type != EXPR_CONSTANT) | |
2554 | { | |
2555 | n = gfc_copy_expr (e); | |
2556 | gfc_simplify_expr (n, 1); | |
2557 | if (n->expr_type == EXPR_CONSTANT) | |
2558 | gfc_replace_expr (e, n); | |
2559 | else | |
2560 | gfc_free_expr (n); | |
2561 | } | |
2562 | e = as->upper[i]; | |
2563 | if (e->expr_type != EXPR_CONSTANT) | |
2564 | { | |
2565 | n = gfc_copy_expr (e); | |
2566 | gfc_simplify_expr (n, 1); | |
2567 | if (n->expr_type == EXPR_CONSTANT) | |
2568 | gfc_replace_expr (e, n); | |
2569 | else | |
2570 | gfc_free_expr (n); | |
2571 | } | |
2572 | } | |
2573 | } | |
ae2864a8 | 2574 | } |
2575 | ||
4ee9c684 | 2576 | char_len = NULL; |
2577 | cl = NULL; | |
3e715c81 | 2578 | cl_deferred = false; |
4ee9c684 | 2579 | |
2580 | if (current_ts.type == BT_CHARACTER) | |
2581 | { | |
926b8757 | 2582 | switch (match_char_length (&char_len, &cl_deferred, false)) |
4ee9c684 | 2583 | { |
2584 | case MATCH_YES: | |
d270ce52 | 2585 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
4ee9c684 | 2586 | |
2587 | cl->length = char_len; | |
2588 | break; | |
2589 | ||
3923b69f | 2590 | /* Non-constant lengths need to be copied after the first |
04b61f60 | 2591 | element. Also copy assumed lengths. */ |
4ee9c684 | 2592 | case MATCH_NO: |
04b61f60 | 2593 | if (elem > 1 |
eeebe20b | 2594 | && (current_ts.u.cl->length == NULL |
2595 | || current_ts.u.cl->length->expr_type != EXPR_CONSTANT)) | |
3923b69f | 2596 | { |
d270ce52 | 2597 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
eeebe20b | 2598 | cl->length = gfc_copy_expr (current_ts.u.cl->length); |
3923b69f | 2599 | } |
2600 | else | |
eeebe20b | 2601 | cl = current_ts.u.cl; |
3923b69f | 2602 | |
3e715c81 | 2603 | cl_deferred = current_ts.deferred; |
2604 | ||
4ee9c684 | 2605 | break; |
2606 | ||
2607 | case MATCH_ERROR: | |
2608 | goto cleanup; | |
2609 | } | |
2610 | } | |
2611 | ||
4b8eb6ca | 2612 | /* The dummy arguments and result of the abreviated form of MODULE |
2613 | PROCEDUREs, used in SUBMODULES should not be redefined. */ | |
2614 | if (gfc_current_ns->proc_name | |
2615 | && gfc_current_ns->proc_name->abr_modproc_decl) | |
2616 | { | |
2617 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2618 | if (sym != NULL && (sym->attr.dummy || sym->attr.result)) | |
2619 | { | |
2620 | m = MATCH_ERROR; | |
2f7de6c1 | 2621 | gfc_error ("%qs at %C is a redefinition of the declaration " |
4b8eb6ca | 2622 | "in the corresponding interface for MODULE " |
2f7de6c1 | 2623 | "PROCEDURE %qs", sym->name, |
4b8eb6ca | 2624 | gfc_current_ns->proc_name->name); |
2625 | goto cleanup; | |
2626 | } | |
2627 | } | |
2628 | ||
8ef2cf76 | 2629 | /* %FILL components may not have initializers. */ |
ea9e8242 | 2630 | if (gfc_str_startswith (name, "%FILL") && gfc_match_eos () != MATCH_YES) |
8ef2cf76 | 2631 | { |
2632 | gfc_error ("%qs entity cannot have an initializer at %C", "%FILL"); | |
2633 | m = MATCH_ERROR; | |
2634 | goto cleanup; | |
2635 | } | |
2636 | ||
b549d2a5 | 2637 | /* If this symbol has already shown up in a Cray Pointer declaration, |
322680b5 | 2638 | and this is not a component declaration, |
f6d0e37a | 2639 | then we want to set the type & bail out. */ |
d7cd448a | 2640 | if (flag_cray_pointer && !gfc_comp_struct (gfc_current_state ())) |
b549d2a5 | 2641 | { |
2642 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2643 | if (sym != NULL && sym->attr.cray_pointee) | |
2644 | { | |
b549d2a5 | 2645 | m = MATCH_YES; |
4bd908ff | 2646 | if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
2647 | { | |
2648 | m = MATCH_ERROR; | |
2649 | goto cleanup; | |
2650 | } | |
8db94b3b | 2651 | |
b549d2a5 | 2652 | /* Check to see if we have an array specification. */ |
2653 | if (cp_as != NULL) | |
2654 | { | |
2655 | if (sym->as != NULL) | |
2656 | { | |
7698a624 | 2657 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
b549d2a5 | 2658 | gfc_free_array_spec (cp_as); |
2659 | m = MATCH_ERROR; | |
2660 | goto cleanup; | |
2661 | } | |
2662 | else | |
2663 | { | |
60e19868 | 2664 | if (!gfc_set_array_spec (sym, cp_as, &var_locus)) |
b549d2a5 | 2665 | gfc_internal_error ("Couldn't set pointee array spec."); |
e14bee04 | 2666 | |
b549d2a5 | 2667 | /* Fix the array spec. */ |
e14bee04 | 2668 | m = gfc_mod_pointee_as (sym->as); |
b549d2a5 | 2669 | if (m == MATCH_ERROR) |
2670 | goto cleanup; | |
2671 | } | |
e14bee04 | 2672 | } |
b549d2a5 | 2673 | goto cleanup; |
2674 | } | |
2675 | else | |
2676 | { | |
2677 | gfc_free_array_spec (cp_as); | |
2678 | } | |
2679 | } | |
e14bee04 | 2680 | |
1e057e9b | 2681 | /* Procedure pointer as function result. */ |
2682 | if (gfc_current_state () == COMP_FUNCTION | |
2683 | && strcmp ("ppr@", gfc_current_block ()->name) == 0 | |
2684 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) == 0) | |
2685 | strcpy (name, "ppr@"); | |
2686 | ||
2687 | if (gfc_current_state () == COMP_FUNCTION | |
2688 | && strcmp (name, gfc_current_block ()->name) == 0 | |
2689 | && gfc_current_block ()->result | |
2690 | && strcmp ("ppr@", gfc_current_block ()->result->name) == 0) | |
2691 | strcpy (name, "ppr@"); | |
e14bee04 | 2692 | |
4ee9c684 | 2693 | /* OK, we've successfully matched the declaration. Now put the |
2694 | symbol in the current namespace, because it might be used in the | |
fe06c0d5 | 2695 | optional initialization expression for this symbol, e.g. this is |
4ee9c684 | 2696 | perfectly legal: |
2697 | ||
2698 | integer, parameter :: i = huge(i) | |
2699 | ||
2700 | This is only true for parameters or variables of a basic type. | |
2701 | For components of derived types, it is not true, so we don't | |
2702 | create a symbol for those yet. If we fail to create the symbol, | |
2703 | bail out. */ | |
d7cd448a | 2704 | if (!gfc_comp_struct (gfc_current_state ()) |
60e19868 | 2705 | && !build_sym (name, cl, cl_deferred, &as, &var_locus)) |
4ee9c684 | 2706 | { |
b8a51d79 | 2707 | m = MATCH_ERROR; |
2708 | goto cleanup; | |
2709 | } | |
2710 | ||
60e19868 | 2711 | if (!check_function_name (name)) |
4ee9c684 | 2712 | { |
4ee9c684 | 2713 | m = MATCH_ERROR; |
2714 | goto cleanup; | |
2715 | } | |
2716 | ||
b4f45d02 | 2717 | /* We allow old-style initializations of the form |
2718 | integer i /2/, j(4) /3*3, 1/ | |
2719 | (if no colon has been seen). These are different from data | |
2720 | statements in that initializers are only allowed to apply to the | |
2721 | variable immediately preceding, i.e. | |
2722 | integer i, j /1, 2/ | |
2723 | is not allowed. Therefore we have to do some work manually, that | |
cca3db55 | 2724 | could otherwise be left to the matchers for DATA statements. */ |
b4f45d02 | 2725 | |
2726 | if (!colon_seen && gfc_match (" /") == MATCH_YES) | |
2727 | { | |
60e19868 | 2728 | if (!gfc_notify_std (GFC_STD_GNU, "Old-style " |
2729 | "initialization at %C")) | |
b4f45d02 | 2730 | return MATCH_ERROR; |
d7cd448a | 2731 | |
2732 | /* Allow old style initializations for components of STRUCTUREs and MAPs | |
2733 | but not components of derived types. */ | |
d57a1422 | 2734 | else if (gfc_current_state () == COMP_DERIVED) |
2735 | { | |
2736 | gfc_error ("Invalid old style initialization for derived type " | |
2737 | "component at %C"); | |
2738 | m = MATCH_ERROR; | |
2739 | goto cleanup; | |
2740 | } | |
8db94b3b | 2741 | |
d7cd448a | 2742 | /* For structure components, read the initializer as a special |
2743 | expression and let the rest of this function apply the initializer | |
2744 | as usual. */ | |
2745 | else if (gfc_comp_struct (gfc_current_state ())) | |
2746 | { | |
2747 | m = match_clist_expr (&initializer, ¤t_ts, as); | |
2748 | if (m == MATCH_NO) | |
2749 | gfc_error ("Syntax error in old style initialization of %s at %C", | |
2750 | name); | |
2751 | if (m != MATCH_YES) | |
2752 | goto cleanup; | |
2753 | } | |
2754 | ||
2755 | /* Otherwise we treat the old style initialization just like a | |
2756 | DATA declaration for the current variable. */ | |
2757 | else | |
2758 | return match_old_style_init (name); | |
b4f45d02 | 2759 | } |
2760 | ||
4ee9c684 | 2761 | /* The double colon must be present in order to have initializers. |
2762 | Otherwise the statement is ambiguous with an assignment statement. */ | |
2763 | if (colon_seen) | |
2764 | { | |
2765 | if (gfc_match (" =>") == MATCH_YES) | |
2766 | { | |
4ee9c684 | 2767 | if (!current_attr.pointer) |
2768 | { | |
2769 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
2770 | m = MATCH_ERROR; | |
2771 | goto cleanup; | |
2772 | } | |
2773 | ||
23d075f4 | 2774 | m = match_pointer_init (&initializer, 0); |
4ee9c684 | 2775 | if (m != MATCH_YES) |
2776 | goto cleanup; | |
4ee9c684 | 2777 | } |
2778 | else if (gfc_match_char ('=') == MATCH_YES) | |
2779 | { | |
2780 | if (current_attr.pointer) | |
2781 | { | |
0d2b3c9c | 2782 | gfc_error ("Pointer initialization at %C requires %<=>%>, " |
2783 | "not %<=%>"); | |
4ee9c684 | 2784 | m = MATCH_ERROR; |
2785 | goto cleanup; | |
2786 | } | |
2787 | ||
2788 | m = gfc_match_init_expr (&initializer); | |
2789 | if (m == MATCH_NO) | |
2790 | { | |
2791 | gfc_error ("Expected an initialization expression at %C"); | |
2792 | m = MATCH_ERROR; | |
2793 | } | |
2794 | ||
b3a420c5 | 2795 | if (current_attr.flavor != FL_PARAMETER && gfc_pure (NULL) |
d7cd448a | 2796 | && !gfc_comp_struct (gfc_state_stack->state)) |
4ee9c684 | 2797 | { |
1a9745d2 | 2798 | gfc_error ("Initialization of variable at %C is not allowed in " |
2799 | "a PURE procedure"); | |
4ee9c684 | 2800 | m = MATCH_ERROR; |
2801 | } | |
2802 | ||
c77badf3 | 2803 | if (current_attr.flavor != FL_PARAMETER |
d7cd448a | 2804 | && !gfc_comp_struct (gfc_state_stack->state)) |
c77badf3 | 2805 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
2806 | ||
4ee9c684 | 2807 | if (m != MATCH_YES) |
2808 | goto cleanup; | |
2809 | } | |
8ffad0f9 | 2810 | } |
2811 | ||
2294b616 | 2812 | if (initializer != NULL && current_attr.allocatable |
d7cd448a | 2813 | && gfc_comp_struct (gfc_current_state ())) |
2294b616 | 2814 | { |
1a9745d2 | 2815 | gfc_error ("Initialization of allocatable component at %C is not " |
2816 | "allowed"); | |
2294b616 | 2817 | m = MATCH_ERROR; |
2818 | goto cleanup; | |
2819 | } | |
2820 | ||
87a0366f | 2821 | if (gfc_current_state () == COMP_DERIVED |
2822 | && gfc_current_block ()->attr.pdt_template) | |
2823 | { | |
2824 | gfc_symbol *param; | |
2825 | gfc_find_symbol (name, gfc_current_block ()->f2k_derived, | |
2826 | 0, ¶m); | |
2827 | if (!param && (current_attr.pdt_kind || current_attr.pdt_len)) | |
2828 | { | |
2829 | gfc_error ("The component with KIND or LEN attribute at %C does not " | |
2830 | "not appear in the type parameter list at %L", | |
2831 | &gfc_current_block ()->declared_at); | |
2832 | m = MATCH_ERROR; | |
2833 | goto cleanup; | |
2834 | } | |
2835 | else if (param && !(current_attr.pdt_kind || current_attr.pdt_len)) | |
2836 | { | |
2837 | gfc_error ("The component at %C that appears in the type parameter " | |
2838 | "list at %L has neither the KIND nor LEN attribute", | |
2839 | &gfc_current_block ()->declared_at); | |
2840 | m = MATCH_ERROR; | |
2841 | goto cleanup; | |
2842 | } | |
2843 | else if (as && (current_attr.pdt_kind || current_attr.pdt_len)) | |
2844 | { | |
2845 | gfc_error ("The component at %C which is a type parameter must be " | |
2846 | "a scalar"); | |
2847 | m = MATCH_ERROR; | |
2848 | goto cleanup; | |
2849 | } | |
2850 | else if (param && initializer) | |
2851 | param->value = gfc_copy_expr (initializer); | |
2852 | } | |
2853 | ||
2c4e6da2 | 2854 | /* Before adding a possible initilizer, do a simple check for compatibility |
9737f088 | 2855 | of lhs and rhs types. Assigning a REAL value to a derived type is not a |
2c4e6da2 | 2856 | good thing. */ |
2857 | if (current_ts.type == BT_DERIVED && initializer | |
2858 | && (gfc_numeric_ts (&initializer->ts) | |
2859 | || initializer->ts.type == BT_LOGICAL | |
2860 | || initializer->ts.type == BT_CHARACTER)) | |
2861 | { | |
9737f088 | 2862 | gfc_error ("Incompatible initialization between a derived type " |
2c4e6da2 | 2863 | "entity and an entity with %qs type at %C", |
2864 | gfc_typename (&initializer->ts)); | |
2865 | m = MATCH_ERROR; | |
2866 | goto cleanup; | |
2867 | } | |
2868 | ||
2869 | ||
d9b3f26b | 2870 | /* Add the initializer. Note that it is fine if initializer is |
4ee9c684 | 2871 | NULL here, because we sometimes also need to check if a |
2872 | declaration *must* have an initialization expression. */ | |
d7cd448a | 2873 | if (!gfc_comp_struct (gfc_current_state ())) |
4ee9c684 | 2874 | t = add_init_expr_to_sym (name, &initializer, &var_locus); |
2875 | else | |
d9b3f26b | 2876 | { |
2294b616 | 2877 | if (current_ts.type == BT_DERIVED |
1a9745d2 | 2878 | && !current_attr.pointer && !initializer) |
d9b3f26b | 2879 | initializer = gfc_default_initializer (¤t_ts); |
2880 | t = build_struct (name, cl, &initializer, &as); | |
d7cd448a | 2881 | |
2882 | /* If we match a nested structure definition we expect to see the | |
2883 | * body even if the variable declarations blow up, so we need to keep | |
2884 | * the structure declaration around. */ | |
2885 | if (gfc_new_block && gfc_new_block->attr.flavor == FL_STRUCT) | |
2886 | gfc_commit_symbol (gfc_new_block); | |
d9b3f26b | 2887 | } |
4ee9c684 | 2888 | |
60e19868 | 2889 | m = (t) ? MATCH_YES : MATCH_ERROR; |
4ee9c684 | 2890 | |
2891 | cleanup: | |
2892 | /* Free stuff up and return. */ | |
2893 | gfc_free_expr (initializer); | |
2894 | gfc_free_array_spec (as); | |
2895 | ||
2896 | return m; | |
2897 | } | |
2898 | ||
2899 | ||
d10f89ee | 2900 | /* Match an extended-f77 "TYPESPEC*bytesize"-style kind specification. |
2901 | This assumes that the byte size is equal to the kind number for | |
2902 | non-COMPLEX types, and equal to twice the kind number for COMPLEX. */ | |
4ee9c684 | 2903 | |
2904 | match | |
1a9745d2 | 2905 | gfc_match_old_kind_spec (gfc_typespec *ts) |
4ee9c684 | 2906 | { |
2907 | match m; | |
3bd3b616 | 2908 | int original_kind; |
4ee9c684 | 2909 | |
2910 | if (gfc_match_char ('*') != MATCH_YES) | |
2911 | return MATCH_NO; | |
2912 | ||
3bd3b616 | 2913 | m = gfc_match_small_literal_int (&ts->kind, NULL); |
4ee9c684 | 2914 | if (m != MATCH_YES) |
2915 | return MATCH_ERROR; | |
2916 | ||
b118a35b | 2917 | original_kind = ts->kind; |
2918 | ||
4ee9c684 | 2919 | /* Massage the kind numbers for complex types. */ |
b118a35b | 2920 | if (ts->type == BT_COMPLEX) |
2921 | { | |
2922 | if (ts->kind % 2) | |
1a9745d2 | 2923 | { |
2924 | gfc_error ("Old-style type declaration %s*%d not supported at %C", | |
2925 | gfc_basic_typename (ts->type), original_kind); | |
2926 | return MATCH_ERROR; | |
2927 | } | |
b118a35b | 2928 | ts->kind /= 2; |
2d76519f | 2929 | |
2930 | } | |
2931 | ||
eb106faf | 2932 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
2d76519f | 2933 | ts->kind = 8; |
2934 | ||
2935 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2936 | { | |
2937 | if (ts->kind == 4) | |
2938 | { | |
eb106faf | 2939 | if (flag_real4_kind == 8) |
2d76519f | 2940 | ts->kind = 8; |
eb106faf | 2941 | if (flag_real4_kind == 10) |
2d76519f | 2942 | ts->kind = 10; |
eb106faf | 2943 | if (flag_real4_kind == 16) |
2d76519f | 2944 | ts->kind = 16; |
2945 | } | |
2946 | ||
2947 | if (ts->kind == 8) | |
2948 | { | |
eb106faf | 2949 | if (flag_real8_kind == 4) |
2d76519f | 2950 | ts->kind = 4; |
eb106faf | 2951 | if (flag_real8_kind == 10) |
2d76519f | 2952 | ts->kind = 10; |
eb106faf | 2953 | if (flag_real8_kind == 16) |
2d76519f | 2954 | ts->kind = 16; |
2955 | } | |
b118a35b | 2956 | } |
4ee9c684 | 2957 | |
f2d4ef3b | 2958 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
4ee9c684 | 2959 | { |
b118a35b | 2960 | gfc_error ("Old-style type declaration %s*%d not supported at %C", |
1a9745d2 | 2961 | gfc_basic_typename (ts->type), original_kind); |
4ee9c684 | 2962 | return MATCH_ERROR; |
2963 | } | |
2964 | ||
76e207a9 | 2965 | if (!gfc_notify_std (GFC_STD_GNU, |
2966 | "Nonstandard type declaration %s*%d at %C", | |
60e19868 | 2967 | gfc_basic_typename(ts->type), original_kind)) |
be7f01a1 | 2968 | return MATCH_ERROR; |
2969 | ||
4ee9c684 | 2970 | return MATCH_YES; |
2971 | } | |
2972 | ||
2973 | ||
2974 | /* Match a kind specification. Since kinds are generally optional, we | |
2975 | usually return MATCH_NO if something goes wrong. If a "kind=" | |
2976 | string is found, then we know we have an error. */ | |
2977 | ||
2978 | match | |
67a51c8e | 2979 | gfc_match_kind_spec (gfc_typespec *ts, bool kind_expr_only) |
4ee9c684 | 2980 | { |
67a51c8e | 2981 | locus where, loc; |
4ee9c684 | 2982 | gfc_expr *e; |
2983 | match m, n; | |
c632ff3d | 2984 | char c; |
4ee9c684 | 2985 | |
2986 | m = MATCH_NO; | |
67a51c8e | 2987 | n = MATCH_YES; |
4ee9c684 | 2988 | e = NULL; |
9d958d5b | 2989 | saved_kind_expr = NULL; |
4ee9c684 | 2990 | |
67a51c8e | 2991 | where = loc = gfc_current_locus; |
2992 | ||
2993 | if (kind_expr_only) | |
2994 | goto kind_expr; | |
4ee9c684 | 2995 | |
2996 | if (gfc_match_char ('(') == MATCH_NO) | |
2997 | return MATCH_NO; | |
2998 | ||
2999 | /* Also gobbles optional text. */ | |
3000 | if (gfc_match (" kind = ") == MATCH_YES) | |
3001 | m = MATCH_ERROR; | |
3002 | ||
67a51c8e | 3003 | loc = gfc_current_locus; |
3004 | ||
3005 | kind_expr: | |
9d958d5b | 3006 | |
4ee9c684 | 3007 | n = gfc_match_init_expr (&e); |
67a51c8e | 3008 | |
9d958d5b | 3009 | if (gfc_derived_parameter_expr (e)) |
3010 | { | |
3011 | ts->kind = 0; | |
3012 | saved_kind_expr = gfc_copy_expr (e); | |
3013 | goto close_brackets; | |
3014 | } | |
3015 | ||
4ee9c684 | 3016 | if (n != MATCH_YES) |
67a51c8e | 3017 | { |
077932f9 | 3018 | if (gfc_matching_function) |
67a51c8e | 3019 | { |
8db94b3b | 3020 | /* The function kind expression might include use associated or |
077932f9 | 3021 | imported parameters and try again after the specification |
3022 | expressions..... */ | |
67a51c8e | 3023 | if (gfc_match_char (')') != MATCH_YES) |
3024 | { | |
3025 | gfc_error ("Missing right parenthesis at %C"); | |
3026 | m = MATCH_ERROR; | |
3027 | goto no_match; | |
3028 | } | |
3029 | ||
3030 | gfc_free_expr (e); | |
67a51c8e | 3031 | gfc_undo_symbols (); |
3032 | return MATCH_YES; | |
3033 | } | |
3034 | else | |
3035 | { | |
3036 | /* ....or else, the match is real. */ | |
3037 | if (n == MATCH_NO) | |
3038 | gfc_error ("Expected initialization expression at %C"); | |
3039 | if (n != MATCH_YES) | |
3040 | return MATCH_ERROR; | |
3041 | } | |
3042 | } | |
4ee9c684 | 3043 | |
3044 | if (e->rank != 0) | |
3045 | { | |
3046 | gfc_error ("Expected scalar initialization expression at %C"); | |
3047 | m = MATCH_ERROR; | |
3048 | goto no_match; | |
3049 | } | |
3050 | ||
dc326dc0 | 3051 | if (gfc_extract_int (e, &ts->kind, 1)) |
4ee9c684 | 3052 | { |
4ee9c684 | 3053 | m = MATCH_ERROR; |
3054 | goto no_match; | |
3055 | } | |
3056 | ||
c5d33754 | 3057 | /* Before throwing away the expression, let's see if we had a |
3058 | C interoperable kind (and store the fact). */ | |
3059 | if (e->ts.is_c_interop == 1) | |
3060 | { | |
df084314 | 3061 | /* Mark this as C interoperable if being declared with one |
c5d33754 | 3062 | of the named constants from iso_c_binding. */ |
3063 | ts->is_c_interop = e->ts.is_iso_c; | |
3064 | ts->f90_type = e->ts.f90_type; | |
41084313 | 3065 | if (e->symtree) |
3066 | ts->interop_kind = e->symtree->n.sym; | |
c5d33754 | 3067 | } |
8db94b3b | 3068 | |
4ee9c684 | 3069 | gfc_free_expr (e); |
3070 | e = NULL; | |
3071 | ||
c5d33754 | 3072 | /* Ignore errors to this point, if we've gotten here. This means |
3073 | we ignore the m=MATCH_ERROR from above. */ | |
f2d4ef3b | 3074 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
4ee9c684 | 3075 | { |
3076 | gfc_error ("Kind %d not supported for type %s at %C", ts->kind, | |
3077 | gfc_basic_typename (ts->type)); | |
c632ff3d | 3078 | gfc_current_locus = where; |
3079 | return MATCH_ERROR; | |
4ee9c684 | 3080 | } |
c632ff3d | 3081 | |
209d3778 | 3082 | /* Warn if, e.g., c_int is used for a REAL variable, but not |
3083 | if, e.g., c_double is used for COMPLEX as the standard | |
3084 | explicitly says that the kind type parameter for complex and real | |
3085 | variable is the same, i.e. c_float == c_float_complex. */ | |
3086 | if (ts->f90_type != BT_UNKNOWN && ts->f90_type != ts->type | |
3087 | && !((ts->f90_type == BT_REAL && ts->type == BT_COMPLEX) | |
3088 | || (ts->f90_type == BT_COMPLEX && ts->type == BT_REAL))) | |
6f521718 | 3089 | gfc_warning_now (0, "C kind type parameter is for type %s but type at %L " |
ded233a6 | 3090 | "is %s", gfc_basic_typename (ts->f90_type), &where, |
3091 | gfc_basic_typename (ts->type)); | |
209d3778 | 3092 | |
9d958d5b | 3093 | close_brackets: |
3094 | ||
c632ff3d | 3095 | gfc_gobble_whitespace (); |
e0be6f02 | 3096 | if ((c = gfc_next_ascii_char ()) != ')' |
3097 | && (ts->type != BT_CHARACTER || c != ',')) | |
4ee9c684 | 3098 | { |
c632ff3d | 3099 | if (ts->type == BT_CHARACTER) |
3100 | gfc_error ("Missing right parenthesis or comma at %C"); | |
3101 | else | |
3102 | gfc_error ("Missing right parenthesis at %C"); | |
67a51c8e | 3103 | m = MATCH_ERROR; |
4ee9c684 | 3104 | } |
c5d33754 | 3105 | else |
3106 | /* All tests passed. */ | |
3107 | m = MATCH_YES; | |
4ee9c684 | 3108 | |
c5d33754 | 3109 | if(m == MATCH_ERROR) |
3110 | gfc_current_locus = where; | |
2d76519f | 3111 | |
eb106faf | 3112 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
2d76519f | 3113 | ts->kind = 8; |
3114 | ||
3115 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
3116 | { | |
3117 | if (ts->kind == 4) | |
3118 | { | |
eb106faf | 3119 | if (flag_real4_kind == 8) |
2d76519f | 3120 | ts->kind = 8; |
eb106faf | 3121 | if (flag_real4_kind == 10) |
2d76519f | 3122 | ts->kind = 10; |
eb106faf | 3123 | if (flag_real4_kind == 16) |
2d76519f | 3124 | ts->kind = 16; |
3125 | } | |
3126 | ||
3127 | if (ts->kind == 8) | |
3128 | { | |
eb106faf | 3129 | if (flag_real8_kind == 4) |
2d76519f | 3130 | ts->kind = 4; |
eb106faf | 3131 | if (flag_real8_kind == 10) |
2d76519f | 3132 | ts->kind = 10; |
eb106faf | 3133 | if (flag_real8_kind == 16) |
2d76519f | 3134 | ts->kind = 16; |
3135 | } | |
3136 | } | |
3137 | ||
c5d33754 | 3138 | /* Return what we know from the test(s). */ |
3139 | return m; | |
4ee9c684 | 3140 | |
3141 | no_match: | |
3142 | gfc_free_expr (e); | |
cbb9e6aa | 3143 | gfc_current_locus = where; |
4ee9c684 | 3144 | return m; |
3145 | } | |
3146 | ||
3147 | ||
33399208 | 3148 | static match |
3149 | match_char_kind (int * kind, int * is_iso_c) | |
3150 | { | |
3151 | locus where; | |
3152 | gfc_expr *e; | |
3153 | match m, n; | |
dc326dc0 | 3154 | bool fail; |
33399208 | 3155 | |
3156 | m = MATCH_NO; | |
3157 | e = NULL; | |
3158 | where = gfc_current_locus; | |
3159 | ||
3160 | n = gfc_match_init_expr (&e); | |
c632ff3d | 3161 | |
077932f9 | 3162 | if (n != MATCH_YES && gfc_matching_function) |
c632ff3d | 3163 | { |
077932f9 | 3164 | /* The expression might include use-associated or imported |
8db94b3b | 3165 | parameters and try again after the specification |
077932f9 | 3166 | expressions. */ |
c632ff3d | 3167 | gfc_free_expr (e); |
c632ff3d | 3168 | gfc_undo_symbols (); |
3169 | return MATCH_YES; | |
3170 | } | |
3171 | ||
33399208 | 3172 | if (n == MATCH_NO) |
3173 | gfc_error ("Expected initialization expression at %C"); | |
3174 | if (n != MATCH_YES) | |
3175 | return MATCH_ERROR; | |
3176 | ||
3177 | if (e->rank != 0) | |
3178 | { | |
3179 | gfc_error ("Expected scalar initialization expression at %C"); | |
3180 | m = MATCH_ERROR; | |
3181 | goto no_match; | |
3182 | } | |
3183 | ||
9f96fdfe | 3184 | if (gfc_derived_parameter_expr (e)) |
3185 | { | |
3186 | saved_kind_expr = e; | |
3187 | *kind = 0; | |
3188 | return MATCH_YES; | |
3189 | } | |
3190 | ||
dc326dc0 | 3191 | fail = gfc_extract_int (e, kind, 1); |
33399208 | 3192 | *is_iso_c = e->ts.is_iso_c; |
dc326dc0 | 3193 | if (fail) |
33399208 | 3194 | { |
33399208 | 3195 | m = MATCH_ERROR; |
3196 | goto no_match; | |
3197 | } | |
3198 | ||
3199 | gfc_free_expr (e); | |
3200 | ||
3201 | /* Ignore errors to this point, if we've gotten here. This means | |
3202 | we ignore the m=MATCH_ERROR from above. */ | |
3203 | if (gfc_validate_kind (BT_CHARACTER, *kind, true) < 0) | |
3204 | { | |
3205 | gfc_error ("Kind %d is not supported for CHARACTER at %C", *kind); | |
3206 | m = MATCH_ERROR; | |
3207 | } | |
3208 | else | |
3209 | /* All tests passed. */ | |
3210 | m = MATCH_YES; | |
3211 | ||
3212 | if (m == MATCH_ERROR) | |
3213 | gfc_current_locus = where; | |
8db94b3b | 3214 | |
33399208 | 3215 | /* Return what we know from the test(s). */ |
3216 | return m; | |
3217 | ||
3218 | no_match: | |
3219 | gfc_free_expr (e); | |
3220 | gfc_current_locus = where; | |
3221 | return m; | |
3222 | } | |
3223 | ||
10f5dcc0 | 3224 | |
4ee9c684 | 3225 | /* Match the various kind/length specifications in a CHARACTER |
3226 | declaration. We don't return MATCH_NO. */ | |
3227 | ||
10f5dcc0 | 3228 | match |
3229 | gfc_match_char_spec (gfc_typespec *ts) | |
4ee9c684 | 3230 | { |
33399208 | 3231 | int kind, seen_length, is_iso_c; |
4ee9c684 | 3232 | gfc_charlen *cl; |
3233 | gfc_expr *len; | |
3234 | match m; | |
3e715c81 | 3235 | bool deferred; |
33399208 | 3236 | |
4ee9c684 | 3237 | len = NULL; |
3238 | seen_length = 0; | |
33399208 | 3239 | kind = 0; |
3240 | is_iso_c = 0; | |
3e715c81 | 3241 | deferred = false; |
4ee9c684 | 3242 | |
3243 | /* Try the old-style specification first. */ | |
3244 | old_char_selector = 0; | |
3245 | ||
926b8757 | 3246 | m = match_char_length (&len, &deferred, true); |
4ee9c684 | 3247 | if (m != MATCH_NO) |
3248 | { | |
3249 | if (m == MATCH_YES) | |
3250 | old_char_selector = 1; | |
3251 | seen_length = 1; | |
3252 | goto done; | |
3253 | } | |
3254 | ||
3255 | m = gfc_match_char ('('); | |
3256 | if (m != MATCH_YES) | |
3257 | { | |
c5d33754 | 3258 | m = MATCH_YES; /* Character without length is a single char. */ |
4ee9c684 | 3259 | goto done; |
3260 | } | |
3261 | ||
c5d33754 | 3262 | /* Try the weird case: ( KIND = <int> [ , LEN = <len-param> ] ). */ |
4ee9c684 | 3263 | if (gfc_match (" kind =") == MATCH_YES) |
3264 | { | |
33399208 | 3265 | m = match_char_kind (&kind, &is_iso_c); |
8db94b3b | 3266 | |
4ee9c684 | 3267 | if (m == MATCH_ERROR) |
3268 | goto done; | |
3269 | if (m == MATCH_NO) | |
3270 | goto syntax; | |
3271 | ||
3272 | if (gfc_match (" , len =") == MATCH_NO) | |
3273 | goto rparen; | |
3274 | ||
3e715c81 | 3275 | m = char_len_param_value (&len, &deferred); |
4ee9c684 | 3276 | if (m == MATCH_NO) |
3277 | goto syntax; | |
3278 | if (m == MATCH_ERROR) | |
3279 | goto done; | |
3280 | seen_length = 1; | |
3281 | ||
3282 | goto rparen; | |
3283 | } | |
3284 | ||
f6d0e37a | 3285 | /* Try to match "LEN = <len-param>" or "LEN = <len-param>, KIND = <int>". */ |
4ee9c684 | 3286 | if (gfc_match (" len =") == MATCH_YES) |
3287 | { | |
3e715c81 | 3288 | m = char_len_param_value (&len, &deferred); |
4ee9c684 | 3289 | if (m == MATCH_NO) |
3290 | goto syntax; | |
3291 | if (m == MATCH_ERROR) | |
3292 | goto done; | |
3293 | seen_length = 1; | |
3294 | ||
3295 | if (gfc_match_char (')') == MATCH_YES) | |
3296 | goto done; | |
3297 | ||
3298 | if (gfc_match (" , kind =") != MATCH_YES) | |
3299 | goto syntax; | |
3300 | ||
33399208 | 3301 | if (match_char_kind (&kind, &is_iso_c) == MATCH_ERROR) |
3302 | goto done; | |
4ee9c684 | 3303 | |
3304 | goto rparen; | |
3305 | } | |
3306 | ||
f6d0e37a | 3307 | /* Try to match ( <len-param> ) or ( <len-param> , [ KIND = ] <int> ). */ |
3e715c81 | 3308 | m = char_len_param_value (&len, &deferred); |
4ee9c684 | 3309 | if (m == MATCH_NO) |
3310 | goto syntax; | |
3311 | if (m == MATCH_ERROR) | |
3312 | goto done; | |
3313 | seen_length = 1; | |
3314 | ||
3315 | m = gfc_match_char (')'); | |
3316 | if (m == MATCH_YES) | |
3317 | goto done; | |
3318 | ||
3319 | if (gfc_match_char (',') != MATCH_YES) | |
3320 | goto syntax; | |
3321 | ||
c5d33754 | 3322 | gfc_match (" kind ="); /* Gobble optional text. */ |
4ee9c684 | 3323 | |
33399208 | 3324 | m = match_char_kind (&kind, &is_iso_c); |
4ee9c684 | 3325 | if (m == MATCH_ERROR) |
3326 | goto done; | |
3327 | if (m == MATCH_NO) | |
3328 | goto syntax; | |
3329 | ||
3330 | rparen: | |
3331 | /* Require a right-paren at this point. */ | |
3332 | m = gfc_match_char (')'); | |
3333 | if (m == MATCH_YES) | |
3334 | goto done; | |
3335 | ||
3336 | syntax: | |
3337 | gfc_error ("Syntax error in CHARACTER declaration at %C"); | |
3338 | m = MATCH_ERROR; | |
a3cbe8cc | 3339 | gfc_free_expr (len); |
3340 | return m; | |
4ee9c684 | 3341 | |
3342 | done: | |
8d39570e | 3343 | /* Deal with character functions after USE and IMPORT statements. */ |
3344 | if (gfc_matching_function) | |
077932f9 | 3345 | { |
8d39570e | 3346 | gfc_free_expr (len); |
077932f9 | 3347 | gfc_undo_symbols (); |
3348 | return MATCH_YES; | |
3349 | } | |
3350 | ||
4ee9c684 | 3351 | if (m != MATCH_YES) |
3352 | { | |
3353 | gfc_free_expr (len); | |
3354 | return m; | |
3355 | } | |
3356 | ||
3357 | /* Do some final massaging of the length values. */ | |
d270ce52 | 3358 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
4ee9c684 | 3359 | |
3360 | if (seen_length == 0) | |
9f4d9f83 | 3361 | cl->length = gfc_get_int_expr (gfc_charlen_int_kind, NULL, 1); |
4ee9c684 | 3362 | else |
91f09922 | 3363 | { |
5efb256e | 3364 | /* If gfortran ends up here, then len may be reducible to a constant. |
3365 | Try to do that here. If it does not reduce, simply assign len to | |
3366 | charlen. A complication occurs with user-defined generic functions, | |
3367 | which are not resolved. Use a private namespace to deal with | |
3368 | generic functions. */ | |
3369 | ||
91f09922 | 3370 | if (len && len->expr_type != EXPR_CONSTANT) |
3371 | { | |
5efb256e | 3372 | gfc_namespace *old_ns; |
91f09922 | 3373 | gfc_expr *e; |
5efb256e | 3374 | |
3375 | old_ns = gfc_current_ns; | |
3376 | gfc_current_ns = gfc_get_namespace (NULL, 0); | |
3377 | ||
91f09922 | 3378 | e = gfc_copy_expr (len); |
3379 | gfc_reduce_init_expr (e); | |
3380 | if (e->expr_type == EXPR_CONSTANT) | |
a3903232 | 3381 | { |
3382 | gfc_replace_expr (len, e); | |
3383 | if (mpz_cmp_si (len->value.integer, 0) < 0) | |
3384 | mpz_set_ui (len->value.integer, 0); | |
3385 | } | |
91f09922 | 3386 | else |
3387 | gfc_free_expr (e); | |
5efb256e | 3388 | |
3389 | gfc_free_namespace (gfc_current_ns); | |
3390 | gfc_current_ns = old_ns; | |
91f09922 | 3391 | } |
5efb256e | 3392 | |
3393 | cl->length = len; | |
91f09922 | 3394 | } |
4ee9c684 | 3395 | |
eeebe20b | 3396 | ts->u.cl = cl; |
33399208 | 3397 | ts->kind = kind == 0 ? gfc_default_character_kind : kind; |
3e715c81 | 3398 | ts->deferred = deferred; |
4ee9c684 | 3399 | |
df084314 | 3400 | /* We have to know if it was a C interoperable kind so we can |
c5d33754 | 3401 | do accurate type checking of bind(c) procs, etc. */ |
33399208 | 3402 | if (kind != 0) |
df084314 | 3403 | /* Mark this as C interoperable if being declared with one |
33399208 | 3404 | of the named constants from iso_c_binding. */ |
3405 | ts->is_c_interop = is_iso_c; | |
c5d33754 | 3406 | else if (len != NULL) |
33399208 | 3407 | /* Here, we might have parsed something such as: character(c_char) |
3408 | In this case, the parsing code above grabs the c_char when | |
3409 | looking for the length (line 1690, roughly). it's the last | |
3410 | testcase for parsing the kind params of a character variable. | |
3411 | However, it's not actually the length. this seems like it | |
8db94b3b | 3412 | could be an error. |
33399208 | 3413 | To see if the user used a C interop kind, test the expr |
3414 | of the so called length, and see if it's C interoperable. */ | |
3415 | ts->is_c_interop = len->ts.is_iso_c; | |
8db94b3b | 3416 | |
4ee9c684 | 3417 | return MATCH_YES; |
3418 | } | |
3419 | ||
3420 | ||
d7cd448a | 3421 | /* Matches a RECORD declaration. */ |
3422 | ||
3423 | static match | |
891196d7 | 3424 | match_record_decl (char *name) |
d7cd448a | 3425 | { |
3426 | locus old_loc; | |
3427 | old_loc = gfc_current_locus; | |
891196d7 | 3428 | match m; |
d7cd448a | 3429 | |
891196d7 | 3430 | m = gfc_match (" record /"); |
3431 | if (m == MATCH_YES) | |
d7cd448a | 3432 | { |
cf078427 | 3433 | if (!flag_dec_structure) |
d7cd448a | 3434 | { |
3435 | gfc_current_locus = old_loc; | |
3436 | gfc_error ("RECORD at %C is an extension, enable it with " | |
3437 | "-fdec-structure"); | |
3438 | return MATCH_ERROR; | |
3439 | } | |
891196d7 | 3440 | m = gfc_match (" %n/", name); |
3441 | if (m == MATCH_YES) | |
3442 | return MATCH_YES; | |
d7cd448a | 3443 | } |
3444 | ||
891196d7 | 3445 | gfc_current_locus = old_loc; |
cf078427 | 3446 | if (flag_dec_structure |
891196d7 | 3447 | && (gfc_match (" record% ") == MATCH_YES |
3448 | || gfc_match (" record%t") == MATCH_YES)) | |
3449 | gfc_error ("Structure name expected after RECORD at %C"); | |
3450 | if (m == MATCH_NO) | |
d7cd448a | 3451 | return MATCH_NO; |
891196d7 | 3452 | |
3453 | return MATCH_ERROR; | |
d7cd448a | 3454 | } |
3455 | ||
9d958d5b | 3456 | |
3457 | /* This function uses the gfc_actual_arglist 'type_param_spec_list' as a source | |
3458 | of expressions to substitute into the possibly parameterized expression | |
3459 | 'e'. Using a list is inefficient but should not be too bad since the | |
3460 | number of type parameters is not likely to be large. */ | |
3461 | static bool | |
3462 | insert_parameter_exprs (gfc_expr* e, gfc_symbol* sym ATTRIBUTE_UNUSED, | |
3463 | int* f) | |
3464 | { | |
3465 | gfc_actual_arglist *param; | |
3466 | gfc_expr *copy; | |
3467 | ||
3468 | if (e->expr_type != EXPR_VARIABLE) | |
3469 | return false; | |
3470 | ||
3471 | gcc_assert (e->symtree); | |
3472 | if (e->symtree->n.sym->attr.pdt_kind | |
3473 | || (*f != 0 && e->symtree->n.sym->attr.pdt_len)) | |
3474 | { | |
3475 | for (param = type_param_spec_list; param; param = param->next) | |
3476 | if (strcmp (e->symtree->n.sym->name, param->name) == 0) | |
3477 | break; | |
3478 | ||
3479 | if (param) | |
3480 | { | |
3481 | copy = gfc_copy_expr (param->expr); | |
3482 | *e = *copy; | |
3483 | free (copy); | |
3484 | } | |
3485 | } | |
3486 | ||
3487 | return false; | |
3488 | } | |
3489 | ||
3490 | ||
3491 | bool | |
3492 | gfc_insert_kind_parameter_exprs (gfc_expr *e) | |
3493 | { | |
3494 | return gfc_traverse_expr (e, NULL, &insert_parameter_exprs, 0); | |
3495 | } | |
3496 | ||
3497 | ||
3498 | bool | |
3499 | gfc_insert_parameter_exprs (gfc_expr *e, gfc_actual_arglist *param_list) | |
3500 | { | |
3501 | gfc_actual_arglist *old_param_spec_list = type_param_spec_list; | |
3502 | type_param_spec_list = param_list; | |
3503 | return gfc_traverse_expr (e, NULL, &insert_parameter_exprs, 1); | |
3504 | type_param_spec_list = NULL; | |
3505 | type_param_spec_list = old_param_spec_list; | |
3506 | } | |
3507 | ||
3508 | /* Determines the instance of a parameterized derived type to be used by | |
3509 | matching determining the values of the kind parameters and using them | |
3510 | in the name of the instance. If the instance exists, it is used, otherwise | |
3511 | a new derived type is created. */ | |
3512 | match | |
3513 | gfc_get_pdt_instance (gfc_actual_arglist *param_list, gfc_symbol **sym, | |
3514 | gfc_actual_arglist **ext_param_list) | |
3515 | { | |
3516 | /* The PDT template symbol. */ | |
3517 | gfc_symbol *pdt = *sym; | |
3518 | /* The symbol for the parameter in the template f2k_namespace. */ | |
3519 | gfc_symbol *param; | |
3520 | /* The hoped for instance of the PDT. */ | |
3521 | gfc_symbol *instance; | |
3522 | /* The list of parameters appearing in the PDT declaration. */ | |
3523 | gfc_formal_arglist *type_param_name_list; | |
3524 | /* Used to store the parameter specification list during recursive calls. */ | |
3525 | gfc_actual_arglist *old_param_spec_list; | |
3526 | /* Pointers to the parameter specification being used. */ | |
3527 | gfc_actual_arglist *actual_param; | |
3528 | gfc_actual_arglist *tail = NULL; | |
3529 | /* Used to build up the name of the PDT instance. The prefix uses 4 | |
3530 | characters and each KIND parameter 2 more. Allow 8 of the latter. */ | |
3531 | char name[GFC_MAX_SYMBOL_LEN + 21]; | |
3532 | ||
3533 | bool name_seen = (param_list == NULL); | |
3534 | bool assumed_seen = false; | |
3535 | bool deferred_seen = false; | |
3536 | bool spec_error = false; | |
3537 | int kind_value, i; | |
3538 | gfc_expr *kind_expr; | |
3539 | gfc_component *c1, *c2; | |
3540 | match m; | |
3541 | ||
3542 | type_param_spec_list = NULL; | |
3543 | ||
3544 | type_param_name_list = pdt->formal; | |
3545 | actual_param = param_list; | |
3546 | sprintf (name, "Pdt%s", pdt->name); | |
3547 | ||
3548 | /* Run through the parameter name list and pick up the actual | |
3549 | parameter values or use the default values in the PDT declaration. */ | |
3550 | for (; type_param_name_list; | |
3551 | type_param_name_list = type_param_name_list->next) | |
3552 | { | |
3553 | if (actual_param && actual_param->spec_type != SPEC_EXPLICIT) | |
3554 | { | |
3555 | if (actual_param->spec_type == SPEC_ASSUMED) | |
3556 | spec_error = deferred_seen; | |
3557 | else | |
3558 | spec_error = assumed_seen; | |
3559 | ||
3560 | if (spec_error) | |
3561 | { | |
3562 | gfc_error ("The type parameter spec list at %C cannot contain " | |
3563 | "both ASSUMED and DEFERRED parameters"); | |
87a0366f | 3564 | goto error_return; |
9d958d5b | 3565 | } |
3566 | } | |
3567 | ||
3568 | if (actual_param && actual_param->name) | |
3569 | name_seen = true; | |
3570 | param = type_param_name_list->sym; | |
3571 | ||
f0efd2e8 | 3572 | if (!param || !param->name) |
3573 | continue; | |
3574 | ||
87a0366f | 3575 | c1 = gfc_find_component (pdt, param->name, false, true, NULL); |
1148eb54 | 3576 | /* An error should already have been thrown in resolve.c |
3577 | (resolve_fl_derived0). */ | |
87a0366f | 3578 | if (!pdt->attr.use_assoc && !c1) |
1148eb54 | 3579 | goto error_return; |
87a0366f | 3580 | |
9d958d5b | 3581 | kind_expr = NULL; |
3582 | if (!name_seen) | |
3583 | { | |
87a0366f | 3584 | if (!actual_param && !(c1 && c1->initializer)) |
3585 | { | |
3586 | gfc_error ("The type parameter spec list at %C does not contain " | |
3587 | "enough parameter expressions"); | |
3588 | goto error_return; | |
3589 | } | |
3590 | else if (!actual_param && c1 && c1->initializer) | |
3591 | kind_expr = gfc_copy_expr (c1->initializer); | |
3592 | else if (actual_param && actual_param->spec_type == SPEC_EXPLICIT) | |
9d958d5b | 3593 | kind_expr = gfc_copy_expr (actual_param->expr); |
3594 | } | |
3595 | else | |
3596 | { | |
3597 | actual_param = param_list; | |
3598 | for (;actual_param; actual_param = actual_param->next) | |
3599 | if (actual_param->name | |
3600 | && strcmp (actual_param->name, param->name) == 0) | |
3601 | break; | |
3602 | if (actual_param && actual_param->spec_type == SPEC_EXPLICIT) | |
3603 | kind_expr = gfc_copy_expr (actual_param->expr); | |
3604 | else | |
3605 | { | |
dba5ed0d | 3606 | if (c1->initializer) |
3607 | kind_expr = gfc_copy_expr (c1->initializer); | |
9d958d5b | 3608 | else if (!(actual_param && param->attr.pdt_len)) |
3609 | { | |
4b8290f8 | 3610 | gfc_error ("The derived parameter %qs at %C does not " |
9d958d5b | 3611 | "have a default value", param->name); |
87a0366f | 3612 | goto error_return; |
9d958d5b | 3613 | } |
3614 | } | |
3615 | } | |
3616 | ||
3617 | /* Store the current parameter expressions in a temporary actual | |
3618 | arglist 'list' so that they can be substituted in the corresponding | |
3619 | expressions in the PDT instance. */ | |
3620 | if (type_param_spec_list == NULL) | |
3621 | { | |
3622 | type_param_spec_list = gfc_get_actual_arglist (); | |
3623 | tail = type_param_spec_list; | |
3624 | } | |
3625 | else | |
3626 | { | |
3627 | tail->next = gfc_get_actual_arglist (); | |
3628 | tail = tail->next; | |
3629 | } | |
3630 | tail->name = param->name; | |
3631 | ||
3632 | if (kind_expr) | |
3633 | { | |
9f96fdfe | 3634 | /* Try simplification even for LEN expressions. */ |
3635 | gfc_resolve_expr (kind_expr); | |
3636 | gfc_simplify_expr (kind_expr, 1); | |
87a0366f | 3637 | /* Variable expressions seem to default to BT_PROCEDURE. |
3638 | TODO find out why this is and fix it. */ | |
3639 | if (kind_expr->ts.type != BT_INTEGER | |
3640 | && kind_expr->ts.type != BT_PROCEDURE) | |
3641 | { | |
3642 | gfc_error ("The parameter expression at %C must be of " | |
3643 | "INTEGER type and not %s type", | |
3644 | gfc_basic_typename (kind_expr->ts.type)); | |
3645 | goto error_return; | |
3646 | } | |
3647 | ||
9d958d5b | 3648 | tail->expr = gfc_copy_expr (kind_expr); |
9d958d5b | 3649 | } |
3650 | ||
3651 | if (actual_param) | |
3652 | tail->spec_type = actual_param->spec_type; | |
3653 | ||
3654 | if (!param->attr.pdt_kind) | |
3655 | { | |
87a0366f | 3656 | if (!name_seen && actual_param) |
9d958d5b | 3657 | actual_param = actual_param->next; |
3658 | if (kind_expr) | |
3659 | { | |
3660 | gfc_free_expr (kind_expr); | |
3661 | kind_expr = NULL; | |
3662 | } | |
3663 | continue; | |
3664 | } | |
3665 | ||
3666 | if (actual_param | |
3667 | && (actual_param->spec_type == SPEC_ASSUMED | |
3668 | || actual_param->spec_type == SPEC_DEFERRED)) | |
3669 | { | |
4b8290f8 | 3670 | gfc_error ("The KIND parameter %qs at %C cannot either be " |
9d958d5b | 3671 | "ASSUMED or DEFERRED", param->name); |
87a0366f | 3672 | goto error_return; |
9d958d5b | 3673 | } |
3674 | ||
3675 | if (!kind_expr || !gfc_is_constant_expr (kind_expr)) | |
3676 | { | |
4b8290f8 | 3677 | gfc_error ("The value for the KIND parameter %qs at %C does not " |
9d958d5b | 3678 | "reduce to a constant expression", param->name); |
87a0366f | 3679 | goto error_return; |
9d958d5b | 3680 | } |
3681 | ||
3682 | gfc_extract_int (kind_expr, &kind_value); | |
e9366ef9 | 3683 | sprintf (name + strlen (name), "_%d", kind_value); |
9d958d5b | 3684 | |
3685 | if (!name_seen && actual_param) | |
3686 | actual_param = actual_param->next; | |
3687 | gfc_free_expr (kind_expr); | |
3688 | } | |
3689 | ||
87a0366f | 3690 | if (!name_seen && actual_param) |
3691 | { | |
3692 | gfc_error ("The type parameter spec list at %C contains too many " | |
3693 | "parameter expressions"); | |
3694 | goto error_return; | |
3695 | } | |
3696 | ||
9d958d5b | 3697 | /* Now we search for the PDT instance 'name'. If it doesn't exist, we |
3698 | build it, using 'pdt' as a template. */ | |
3699 | if (gfc_get_symbol (name, pdt->ns, &instance)) | |
3700 | { | |
3701 | gfc_error ("Parameterized derived type at %C is ambiguous"); | |
87a0366f | 3702 | goto error_return; |
9d958d5b | 3703 | } |
3704 | ||
3705 | m = MATCH_YES; | |
3706 | ||
3707 | if (instance->attr.flavor == FL_DERIVED | |
3708 | && instance->attr.pdt_type) | |
3709 | { | |
3710 | instance->refs++; | |
3711 | if (ext_param_list) | |
3712 | *ext_param_list = type_param_spec_list; | |
3713 | *sym = instance; | |
3714 | gfc_commit_symbols (); | |
3715 | return m; | |
3716 | } | |
3717 | ||
3718 | /* Start building the new instance of the parameterized type. */ | |
3719 | gfc_copy_attr (&instance->attr, &pdt->attr, &pdt->declared_at); | |
3720 | instance->attr.pdt_template = 0; | |
3721 | instance->attr.pdt_type = 1; | |
3722 | instance->declared_at = gfc_current_locus; | |
3723 | ||
3724 | /* Add the components, replacing the parameters in all expressions | |
3725 | with the expressions for their values in 'type_param_spec_list'. */ | |
3726 | c1 = pdt->components; | |
3727 | tail = type_param_spec_list; | |
3728 | for (; c1; c1 = c1->next) | |
3729 | { | |
3730 | gfc_add_component (instance, c1->name, &c2); | |
f0efd2e8 | 3731 | |
9d958d5b | 3732 | c2->ts = c1->ts; |
3733 | c2->attr = c1->attr; | |
3734 | ||
f0efd2e8 | 3735 | /* The order of declaration of the type_specs might not be the |
3736 | same as that of the components. */ | |
3737 | if (c1->attr.pdt_kind || c1->attr.pdt_len) | |
3738 | { | |
3739 | for (tail = type_param_spec_list; tail; tail = tail->next) | |
3740 | if (strcmp (c1->name, tail->name) == 0) | |
3741 | break; | |
3742 | } | |
3743 | ||
9d958d5b | 3744 | /* Deal with type extension by recursively calling this function |
3745 | to obtain the instance of the extended type. */ | |
3746 | if (gfc_current_state () != COMP_DERIVED | |
3747 | && c1 == pdt->components | |
3748 | && (c1->ts.type == BT_DERIVED || c1->ts.type == BT_CLASS) | |
3749 | && c1->ts.u.derived && c1->ts.u.derived->attr.pdt_template | |
3750 | && gfc_get_derived_super_type (*sym) == c2->ts.u.derived) | |
3751 | { | |
3752 | gfc_formal_arglist *f; | |
3753 | ||
3754 | old_param_spec_list = type_param_spec_list; | |
3755 | ||
3756 | /* Obtain a spec list appropriate to the extended type..*/ | |
3757 | actual_param = gfc_copy_actual_arglist (type_param_spec_list); | |
3758 | type_param_spec_list = actual_param; | |
3759 | for (f = c1->ts.u.derived->formal; f && f->next; f = f->next) | |
3760 | actual_param = actual_param->next; | |
3761 | if (actual_param) | |
3762 | { | |
3763 | gfc_free_actual_arglist (actual_param->next); | |
3764 | actual_param->next = NULL; | |
3765 | } | |
3766 | ||
3767 | /* Now obtain the PDT instance for the extended type. */ | |
3768 | c2->param_list = type_param_spec_list; | |
3769 | m = gfc_get_pdt_instance (type_param_spec_list, &c2->ts.u.derived, | |
3770 | NULL); | |
3771 | type_param_spec_list = old_param_spec_list; | |
3772 | ||
3773 | c2->ts.u.derived->refs++; | |
3774 | gfc_set_sym_referenced (c2->ts.u.derived); | |
3775 | ||
3776 | /* Set extension level. */ | |
3777 | if (c2->ts.u.derived->attr.extension == 255) | |
3778 | { | |
3779 | /* Since the extension field is 8 bit wide, we can only have | |
3780 | up to 255 extension levels. */ | |
3781 | gfc_error ("Maximum extension level reached with type %qs at %L", | |
3782 | c2->ts.u.derived->name, | |
3783 | &c2->ts.u.derived->declared_at); | |
87a0366f | 3784 | goto error_return; |
9d958d5b | 3785 | } |
3786 | instance->attr.extension = c2->ts.u.derived->attr.extension + 1; | |
3787 | ||
9d958d5b | 3788 | continue; |
3789 | } | |
3790 | ||
3791 | /* Set the component kind using the parameterized expression. */ | |
f0efd2e8 | 3792 | if ((c1->ts.kind == 0 || c1->ts.type == BT_CHARACTER) |
3793 | && c1->kind_expr != NULL) | |
9d958d5b | 3794 | { |
3795 | gfc_expr *e = gfc_copy_expr (c1->kind_expr); | |
3796 | gfc_insert_kind_parameter_exprs (e); | |
9f96fdfe | 3797 | gfc_simplify_expr (e, 1); |
9d958d5b | 3798 | gfc_extract_int (e, &c2->ts.kind); |
3799 | gfc_free_expr (e); | |
87a0366f | 3800 | if (gfc_validate_kind (c2->ts.type, c2->ts.kind, true) < 0) |
3801 | { | |
3802 | gfc_error ("Kind %d not supported for type %s at %C", | |
3803 | c2->ts.kind, gfc_basic_typename (c2->ts.type)); | |
3804 | goto error_return; | |
3805 | } | |
9d958d5b | 3806 | } |
3807 | ||
3808 | /* Similarly, set the string length if parameterized. */ | |
3809 | if (c1->ts.type == BT_CHARACTER | |
3810 | && c1->ts.u.cl->length | |
3811 | && gfc_derived_parameter_expr (c1->ts.u.cl->length)) | |
3812 | { | |
3813 | gfc_expr *e; | |
3814 | e = gfc_copy_expr (c1->ts.u.cl->length); | |
3815 | gfc_insert_kind_parameter_exprs (e); | |
3816 | gfc_simplify_expr (e, 1); | |
3817 | c2->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); | |
3818 | c2->ts.u.cl->length = e; | |
3819 | c2->attr.pdt_string = 1; | |
3820 | } | |
3821 | ||
3822 | /* Set up either the KIND/LEN initializer, if constant, | |
3823 | or the parameterized expression. Use the template | |
3824 | initializer if one is not already set in this instance. */ | |
3825 | if (c2->attr.pdt_kind || c2->attr.pdt_len) | |
3826 | { | |
3827 | if (tail && tail->expr && gfc_is_constant_expr (tail->expr)) | |
3828 | c2->initializer = gfc_copy_expr (tail->expr); | |
3829 | else if (tail && tail->expr) | |
3830 | { | |
3831 | c2->param_list = gfc_get_actual_arglist (); | |
3832 | c2->param_list->name = tail->name; | |
3833 | c2->param_list->expr = gfc_copy_expr (tail->expr); | |
3834 | c2->param_list->next = NULL; | |
3835 | } | |
3836 | ||
3837 | if (!c2->initializer && c1->initializer) | |
3838 | c2->initializer = gfc_copy_expr (c1->initializer); | |
9d958d5b | 3839 | } |
3840 | ||
3841 | /* Copy the array spec. */ | |
3842 | c2->as = gfc_copy_array_spec (c1->as); | |
3843 | if (c1->ts.type == BT_CLASS) | |
3844 | CLASS_DATA (c2)->as = gfc_copy_array_spec (CLASS_DATA (c1)->as); | |
3845 | ||
3846 | /* Determine if an array spec is parameterized. If so, substitute | |
3847 | in the parameter expressions for the bounds and set the pdt_array | |
3848 | attribute. Notice that this attribute must be unconditionally set | |
3849 | if this is an array of parameterized character length. */ | |
3850 | if (c1->as && c1->as->type == AS_EXPLICIT) | |
3851 | { | |
3852 | bool pdt_array = false; | |
3853 | ||
3854 | /* Are the bounds of the array parameterized? */ | |
3855 | for (i = 0; i < c1->as->rank; i++) | |
3856 | { | |
3857 | if (gfc_derived_parameter_expr (c1->as->lower[i])) | |
3858 | pdt_array = true; | |
3859 | if (gfc_derived_parameter_expr (c1->as->upper[i])) | |
3860 | pdt_array = true; | |
3861 | } | |
3862 | ||
3863 | /* If they are, free the expressions for the bounds and | |
3864 | replace them with the template expressions with substitute | |
3865 | values. */ | |
3866 | for (i = 0; pdt_array && i < c1->as->rank; i++) | |
3867 | { | |
3868 | gfc_expr *e; | |
3869 | e = gfc_copy_expr (c1->as->lower[i]); | |
3870 | gfc_insert_kind_parameter_exprs (e); | |
3871 | gfc_simplify_expr (e, 1); | |
3872 | gfc_free_expr (c2->as->lower[i]); | |
3873 | c2->as->lower[i] = e; | |
3874 | e = gfc_copy_expr (c1->as->upper[i]); | |
3875 | gfc_insert_kind_parameter_exprs (e); | |
3876 | gfc_simplify_expr (e, 1); | |
3877 | gfc_free_expr (c2->as->upper[i]); | |
3878 | c2->as->upper[i] = e; | |
3879 | } | |
3880 | c2->attr.pdt_array = pdt_array ? 1 : c2->attr.pdt_string; | |
8534bf8a | 3881 | if (c1->initializer) |
3882 | { | |
3883 | c2->initializer = gfc_copy_expr (c1->initializer); | |
3884 | gfc_insert_kind_parameter_exprs (c2->initializer); | |
3885 | gfc_simplify_expr (c2->initializer, 1); | |
3886 | } | |
9d958d5b | 3887 | } |
3888 | ||
3889 | /* Recurse into this function for PDT components. */ | |
3890 | if ((c1->ts.type == BT_DERIVED || c1->ts.type == BT_CLASS) | |
3891 | && c1->ts.u.derived && c1->ts.u.derived->attr.pdt_template) | |
3892 | { | |
3893 | gfc_actual_arglist *params; | |
3894 | /* The component in the template has a list of specification | |
3895 | expressions derived from its declaration. */ | |
3896 | params = gfc_copy_actual_arglist (c1->param_list); | |
3897 | actual_param = params; | |
3898 | /* Substitute the template parameters with the expressions | |
3899 | from the specification list. */ | |
3900 | for (;actual_param; actual_param = actual_param->next) | |
3901 | gfc_insert_parameter_exprs (actual_param->expr, | |
3902 | type_param_spec_list); | |
3903 | ||
3904 | /* Now obtain the PDT instance for the component. */ | |
3905 | old_param_spec_list = type_param_spec_list; | |
3906 | m = gfc_get_pdt_instance (params, &c2->ts.u.derived, NULL); | |
3907 | type_param_spec_list = old_param_spec_list; | |
3908 | ||
3909 | c2->param_list = params; | |
d11013dc | 3910 | if (!(c2->attr.pointer || c2->attr.allocatable)) |
3911 | c2->initializer = gfc_default_initializer (&c2->ts); | |
3912 | ||
3913 | if (c2->attr.allocatable) | |
3914 | instance->attr.alloc_comp = 1; | |
9d958d5b | 3915 | } |
3916 | } | |
3917 | ||
3918 | gfc_commit_symbol (instance); | |
3919 | if (ext_param_list) | |
3920 | *ext_param_list = type_param_spec_list; | |
3921 | *sym = instance; | |
3922 | return m; | |
87a0366f | 3923 | |
3924 | error_return: | |
3925 | gfc_free_actual_arglist (type_param_spec_list); | |
3926 | return MATCH_ERROR; | |
9d958d5b | 3927 | } |
3928 | ||
3929 | ||
e8152f13 | 3930 | /* Matches a declaration-type-spec (F03:R502). If successful, sets the ts |
3931 | structure to the matched specification. This is necessary for FUNCTION and | |
4ee9c684 | 3932 | IMPLICIT statements. |
3933 | ||
e14bee04 | 3934 | If implicit_flag is nonzero, then we don't check for the optional |
39351103 | 3935 | kind specification. Not doing so is needed for matching an IMPLICIT |
4ee9c684 | 3936 | statement correctly. */ |
3937 | ||
67a51c8e | 3938 | match |
e8152f13 | 3939 | gfc_match_decl_type_spec (gfc_typespec *ts, int implicit_flag) |
4ee9c684 | 3940 | { |
3941 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c2958b6b | 3942 | gfc_symbol *sym, *dt_sym; |
4ee9c684 | 3943 | match m; |
e0be6f02 | 3944 | char c; |
f446fb22 | 3945 | bool seen_deferred_kind, matched_type; |
c2958b6b | 3946 | const char *dt_name; |
4ee9c684 | 3947 | |
9d958d5b | 3948 | decl_type_param_list = NULL; |
3949 | ||
077932f9 | 3950 | /* A belt and braces check that the typespec is correctly being treated |
3951 | as a deferred characteristic association. */ | |
3952 | seen_deferred_kind = (gfc_current_state () == COMP_FUNCTION) | |
8d39570e | 3953 | && (gfc_current_block ()->result->ts.kind == -1) |
3954 | && (ts->kind == -1); | |
4ee9c684 | 3955 | gfc_clear_ts (ts); |
077932f9 | 3956 | if (seen_deferred_kind) |
3957 | ts->kind = -1; | |
4ee9c684 | 3958 | |
c5d33754 | 3959 | /* Clear the current binding label, in case one is given. */ |
7b2060ba | 3960 | curr_binding_label = NULL; |
c5d33754 | 3961 | |
25b29122 | 3962 | if (gfc_match (" byte") == MATCH_YES) |
3963 | { | |
60e19868 | 3964 | if (!gfc_notify_std (GFC_STD_GNU, "BYTE type at %C")) |
25b29122 | 3965 | return MATCH_ERROR; |
3966 | ||
3967 | if (gfc_validate_kind (BT_INTEGER, 1, true) < 0) | |
3968 | { | |
3969 | gfc_error ("BYTE type used at %C " | |
3970 | "is not available on the target machine"); | |
3971 | return MATCH_ERROR; | |
3972 | } | |
e14bee04 | 3973 | |
25b29122 | 3974 | ts->type = BT_INTEGER; |
3975 | ts->kind = 1; | |
3976 | return MATCH_YES; | |
3977 | } | |
3978 | ||
f446fb22 | 3979 | |
8c2d8d6d | 3980 | m = gfc_match (" type ("); |
f446fb22 | 3981 | matched_type = (m == MATCH_YES); |
8c2d8d6d | 3982 | if (matched_type) |
3983 | { | |
3984 | gfc_gobble_whitespace (); | |
3985 | if (gfc_peek_ascii_char () == '*') | |
3986 | { | |
3987 | if ((m = gfc_match ("*)")) != MATCH_YES) | |
3988 | return m; | |
d7cd448a | 3989 | if (gfc_comp_struct (gfc_current_state ())) |
8c2d8d6d | 3990 | { |
3991 | gfc_error ("Assumed type at %C is not allowed for components"); | |
3992 | return MATCH_ERROR; | |
3993 | } | |
2e2156cf | 3994 | if (!gfc_notify_std (GFC_STD_F2018, "Assumed type at %C")) |
8c2d8d6d | 3995 | return MATCH_ERROR; |
3996 | ts->type = BT_ASSUMED; | |
3997 | return MATCH_YES; | |
3998 | } | |
3999 | ||
4000 | m = gfc_match ("%n", name); | |
4001 | matched_type = (m == MATCH_YES); | |
4002 | } | |
4003 | ||
f446fb22 | 4004 | if ((matched_type && strcmp ("integer", name) == 0) |
4005 | || (!matched_type && gfc_match (" integer") == MATCH_YES)) | |
4ee9c684 | 4006 | { |
4007 | ts->type = BT_INTEGER; | |
b8a891cb | 4008 | ts->kind = gfc_default_integer_kind; |
4ee9c684 | 4009 | goto get_kind; |
4010 | } | |
4011 | ||
f446fb22 | 4012 | if ((matched_type && strcmp ("character", name) == 0) |
4013 | || (!matched_type && gfc_match (" character") == MATCH_YES)) | |
4ee9c684 | 4014 | { |
f446fb22 | 4015 | if (matched_type |
60e19868 | 4016 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
4017 | "intrinsic-type-spec at %C")) | |
f446fb22 | 4018 | return MATCH_ERROR; |
4019 | ||
4ee9c684 | 4020 | ts->type = BT_CHARACTER; |
39351103 | 4021 | if (implicit_flag == 0) |
f446fb22 | 4022 | m = gfc_match_char_spec (ts); |
39351103 | 4023 | else |
f446fb22 | 4024 | m = MATCH_YES; |
4025 | ||
4026 | if (matched_type && m == MATCH_YES && gfc_match_char (')') != MATCH_YES) | |
4027 | m = MATCH_ERROR; | |
4028 | ||
4029 | return m; | |
4ee9c684 | 4030 | } |
4031 | ||
f446fb22 | 4032 | if ((matched_type && strcmp ("real", name) == 0) |
4033 | || (!matched_type && gfc_match (" real") == MATCH_YES)) | |
4ee9c684 | 4034 | { |
4035 | ts->type = BT_REAL; | |
b8a891cb | 4036 | ts->kind = gfc_default_real_kind; |
4ee9c684 | 4037 | goto get_kind; |
4038 | } | |
4039 | ||
f446fb22 | 4040 | if ((matched_type |
4041 | && (strcmp ("doubleprecision", name) == 0 | |
4042 | || (strcmp ("double", name) == 0 | |
4043 | && gfc_match (" precision") == MATCH_YES))) | |
4044 | || (!matched_type && gfc_match (" double precision") == MATCH_YES)) | |
4ee9c684 | 4045 | { |
f446fb22 | 4046 | if (matched_type |
60e19868 | 4047 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
4048 | "intrinsic-type-spec at %C")) | |
f446fb22 | 4049 | return MATCH_ERROR; |
4050 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
4051 | return MATCH_ERROR; | |
4052 | ||
4ee9c684 | 4053 | ts->type = BT_REAL; |
b8a891cb | 4054 | ts->kind = gfc_default_double_kind; |
4ee9c684 | 4055 | return MATCH_YES; |
4056 | } | |
4057 | ||
f446fb22 | 4058 | if ((matched_type && strcmp ("complex", name) == 0) |
4059 | || (!matched_type && gfc_match (" complex") == MATCH_YES)) | |
4ee9c684 | 4060 | { |
4061 | ts->type = BT_COMPLEX; | |
b8a891cb | 4062 | ts->kind = gfc_default_complex_kind; |
4ee9c684 | 4063 | goto get_kind; |
4064 | } | |
4065 | ||
f446fb22 | 4066 | if ((matched_type |
4067 | && (strcmp ("doublecomplex", name) == 0 | |
4068 | || (strcmp ("double", name) == 0 | |
4069 | && gfc_match (" complex") == MATCH_YES))) | |
4070 | || (!matched_type && gfc_match (" double complex") == MATCH_YES)) | |
4ee9c684 | 4071 | { |
60e19868 | 4072 | if (!gfc_notify_std (GFC_STD_GNU, "DOUBLE COMPLEX at %C")) |
f446fb22 | 4073 | return MATCH_ERROR; |
4074 | ||
4075 | if (matched_type | |
60e19868 | 4076 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
4077 | "intrinsic-type-spec at %C")) | |
f446fb22 | 4078 | return MATCH_ERROR; |
4079 | ||
4080 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
be7f01a1 | 4081 | return MATCH_ERROR; |
4082 | ||
4ee9c684 | 4083 | ts->type = BT_COMPLEX; |
b8a891cb | 4084 | ts->kind = gfc_default_double_kind; |
4ee9c684 | 4085 | return MATCH_YES; |
4086 | } | |
4087 | ||
f446fb22 | 4088 | if ((matched_type && strcmp ("logical", name) == 0) |
4089 | || (!matched_type && gfc_match (" logical") == MATCH_YES)) | |
4ee9c684 | 4090 | { |
4091 | ts->type = BT_LOGICAL; | |
b8a891cb | 4092 | ts->kind = gfc_default_logical_kind; |
4ee9c684 | 4093 | goto get_kind; |
4094 | } | |
4095 | ||
f446fb22 | 4096 | if (matched_type) |
9d958d5b | 4097 | { |
4098 | m = gfc_match_actual_arglist (1, &decl_type_param_list, true); | |
4099 | if (m == MATCH_ERROR) | |
4100 | return m; | |
4101 | ||
f446fb22 | 4102 | m = gfc_match_char (')'); |
9d958d5b | 4103 | } |
f446fb22 | 4104 | |
d7cd448a | 4105 | if (m != MATCH_YES) |
4106 | m = match_record_decl (name); | |
4107 | ||
4108 | if (matched_type || m == MATCH_YES) | |
4109 | { | |
4110 | ts->type = BT_DERIVED; | |
4111 | /* We accept record/s/ or type(s) where s is a structure, but we | |
4112 | * don't need all the extra derived-type stuff for structures. */ | |
4113 | if (gfc_find_symbol (gfc_dt_upper_string (name), NULL, 1, &sym)) | |
4114 | { | |
1b7008c4 | 4115 | gfc_error ("Type name %qs at %C is ambiguous", name); |
d7cd448a | 4116 | return MATCH_ERROR; |
4117 | } | |
9d958d5b | 4118 | |
4119 | if (sym && sym->attr.flavor == FL_DERIVED | |
4120 | && sym->attr.pdt_template | |
4121 | && gfc_current_state () != COMP_DERIVED) | |
4122 | { | |
4123 | m = gfc_get_pdt_instance (decl_type_param_list, &sym, NULL); | |
4124 | if (m != MATCH_YES) | |
4125 | return m; | |
4126 | gcc_assert (!sym->attr.pdt_template && sym->attr.pdt_type); | |
4127 | ts->u.derived = sym; | |
4128 | strcpy (name, gfc_dt_lower_string (sym->name)); | |
4129 | } | |
4130 | ||
d7cd448a | 4131 | if (sym && sym->attr.flavor == FL_STRUCT) |
4132 | { | |
4133 | ts->u.derived = sym; | |
4134 | return MATCH_YES; | |
4135 | } | |
4136 | /* Actually a derived type. */ | |
4137 | } | |
4138 | ||
1de1b1a9 | 4139 | else |
8ca7f89c | 4140 | { |
d7cd448a | 4141 | /* Match nested STRUCTURE declarations; only valid within another |
891196d7 | 4142 | structure declaration. */ |
cf078427 | 4143 | if (flag_dec_structure |
891196d7 | 4144 | && (gfc_current_state () == COMP_STRUCTURE |
4145 | || gfc_current_state () == COMP_MAP)) | |
4146 | { | |
4147 | m = gfc_match (" structure"); | |
4148 | if (m == MATCH_YES) | |
4149 | { | |
4150 | m = gfc_match_structure_decl (); | |
4151 | if (m == MATCH_YES) | |
4152 | { | |
4153 | /* gfc_new_block is updated by match_structure_decl. */ | |
4154 | ts->type = BT_DERIVED; | |
4155 | ts->u.derived = gfc_new_block; | |
4156 | return MATCH_YES; | |
4157 | } | |
4158 | } | |
4159 | if (m == MATCH_ERROR) | |
4160 | return MATCH_ERROR; | |
4161 | } | |
d7cd448a | 4162 | |
fa102e56 | 4163 | /* Match CLASS declarations. */ |
4164 | m = gfc_match (" class ( * )"); | |
4165 | if (m == MATCH_ERROR) | |
4166 | return MATCH_ERROR; | |
4167 | else if (m == MATCH_YES) | |
4168 | { | |
a90fe829 | 4169 | gfc_symbol *upe; |
4170 | gfc_symtree *st; | |
4171 | ts->type = BT_CLASS; | |
8db94b3b | 4172 | gfc_find_symbol ("STAR", gfc_current_ns, 1, &upe); |
a90fe829 | 4173 | if (upe == NULL) |
4174 | { | |
8db94b3b | 4175 | upe = gfc_new_symbol ("STAR", gfc_current_ns); |
4176 | st = gfc_new_symtree (&gfc_current_ns->sym_root, "STAR"); | |
a90fe829 | 4177 | st->n.sym = upe; |
4178 | gfc_set_sym_referenced (upe); | |
4179 | upe->refs++; | |
4180 | upe->ts.type = BT_VOID; | |
4181 | upe->attr.unlimited_polymorphic = 1; | |
4182 | /* This is essential to force the construction of | |
4183 | unlimited polymorphic component class containers. */ | |
4184 | upe->attr.zero_comp = 1; | |
76e207a9 | 4185 | if (!gfc_add_flavor (&upe->attr, FL_DERIVED, NULL, |
60e19868 | 4186 | &gfc_current_locus)) |
f7b2c82b | 4187 | return MATCH_ERROR; |
4188 | } | |
a90fe829 | 4189 | else |
4190 | { | |
f7b2c82b | 4191 | st = gfc_get_tbp_symtree (&gfc_current_ns->sym_root, "STAR"); |
a90fe829 | 4192 | st->n.sym = upe; |
4193 | upe->refs++; | |
4194 | } | |
4195 | ts->u.derived = upe; | |
4196 | return m; | |
4197 | } | |
fa102e56 | 4198 | |
9d958d5b | 4199 | m = gfc_match (" class ("); |
4200 | ||
4201 | if (m == MATCH_YES) | |
4202 | m = gfc_match ("%n", name); | |
4203 | else | |
4204 | return m; | |
4205 | ||
8ca7f89c | 4206 | if (m != MATCH_YES) |
4207 | return m; | |
1de1b1a9 | 4208 | ts->type = BT_CLASS; |
8ca7f89c | 4209 | |
60e19868 | 4210 | if (!gfc_notify_std (GFC_STD_F2003, "CLASS statement at %C")) |
e8152f13 | 4211 | return MATCH_ERROR; |
9d958d5b | 4212 | |
4213 | m = gfc_match_actual_arglist (1, &decl_type_param_list, true); | |
4214 | if (m == MATCH_ERROR) | |
4215 | return m; | |
4216 | ||
4217 | m = gfc_match_char (')'); | |
4218 | if (m != MATCH_YES) | |
4219 | return m; | |
8ca7f89c | 4220 | } |
4ee9c684 | 4221 | |
077932f9 | 4222 | /* Defer association of the derived type until the end of the |
4223 | specification block. However, if the derived type can be | |
8db94b3b | 4224 | found, add it to the typespec. */ |
077932f9 | 4225 | if (gfc_matching_function) |
67a51c8e | 4226 | { |
eeebe20b | 4227 | ts->u.derived = NULL; |
077932f9 | 4228 | if (gfc_current_state () != COMP_INTERFACE |
4229 | && !gfc_find_symbol (name, NULL, 1, &sym) && sym) | |
c2958b6b | 4230 | { |
4231 | sym = gfc_find_dt_in_generic (sym); | |
4232 | ts->u.derived = sym; | |
4233 | } | |
67a51c8e | 4234 | return MATCH_YES; |
4235 | } | |
4236 | ||
4237 | /* Search for the name but allow the components to be defined later. If | |
4238 | type = -1, this typespec has been seen in a function declaration but | |
c2958b6b | 4239 | the type could not be accessed at that point. The actual derived type is |
df084314 | 4240 | stored in a symtree with the first letter of the name capitalized; the |
c2958b6b | 4241 | symtree with the all lower-case name contains the associated |
4242 | generic function. */ | |
d7cd448a | 4243 | dt_name = gfc_dt_upper_string (name); |
077932f9 | 4244 | sym = NULL; |
c2958b6b | 4245 | dt_sym = NULL; |
4246 | if (ts->kind != -1) | |
4ee9c684 | 4247 | { |
c2958b6b | 4248 | gfc_get_ha_symbol (name, &sym); |
4249 | if (sym->generic && gfc_find_symbol (dt_name, NULL, 0, &dt_sym)) | |
4250 | { | |
716da296 | 4251 | gfc_error ("Type name %qs at %C is ambiguous", name); |
c2958b6b | 4252 | return MATCH_ERROR; |
4253 | } | |
4254 | if (sym->generic && !dt_sym) | |
4255 | dt_sym = gfc_find_dt_in_generic (sym); | |
87a0366f | 4256 | |
4257 | /* Host associated PDTs can get confused with their constructors | |
4258 | because they ar instantiated in the template's namespace. */ | |
4259 | if (!dt_sym) | |
4260 | { | |
4261 | if (gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
4262 | { | |
4263 | gfc_error ("Type name %qs at %C is ambiguous", name); | |
4264 | return MATCH_ERROR; | |
4265 | } | |
4266 | if (dt_sym && !dt_sym->attr.pdt_type) | |
4267 | dt_sym = NULL; | |
4268 | } | |
4ee9c684 | 4269 | } |
67a51c8e | 4270 | else if (ts->kind == -1) |
4271 | { | |
077932f9 | 4272 | int iface = gfc_state_stack->previous->state != COMP_INTERFACE |
4273 | || gfc_current_ns->has_import_set; | |
c2958b6b | 4274 | gfc_find_symbol (name, NULL, iface, &sym); |
4275 | if (sym && sym->generic && gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
8db94b3b | 4276 | { |
716da296 | 4277 | gfc_error ("Type name %qs at %C is ambiguous", name); |
67a51c8e | 4278 | return MATCH_ERROR; |
4279 | } | |
c2958b6b | 4280 | if (sym && sym->generic && !dt_sym) |
4281 | dt_sym = gfc_find_dt_in_generic (sym); | |
67a51c8e | 4282 | |
077932f9 | 4283 | ts->kind = 0; |
67a51c8e | 4284 | if (sym == NULL) |
4285 | return MATCH_NO; | |
4286 | } | |
4ee9c684 | 4287 | |
d7cd448a | 4288 | if ((sym->attr.flavor != FL_UNKNOWN && sym->attr.flavor != FL_STRUCT |
c2958b6b | 4289 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.generic)) |
4290 | || sym->attr.subroutine) | |
4291 | { | |
e87256b0 | 4292 | gfc_error ("Type name %qs at %C conflicts with previously declared " |
4293 | "entity at %L, which has the same name", name, | |
4294 | &sym->declared_at); | |
c2958b6b | 4295 | return MATCH_ERROR; |
4296 | } | |
4ee9c684 | 4297 | |
9d958d5b | 4298 | if (sym && sym->attr.flavor == FL_DERIVED |
4299 | && sym->attr.pdt_template | |
4300 | && gfc_current_state () != COMP_DERIVED) | |
87a0366f | 4301 | { |
4302 | m = gfc_get_pdt_instance (decl_type_param_list, &sym, NULL); | |
4303 | if (m != MATCH_YES) | |
4304 | return m; | |
4305 | gcc_assert (!sym->attr.pdt_template && sym->attr.pdt_type); | |
4306 | ts->u.derived = sym; | |
4307 | strcpy (name, gfc_dt_lower_string (sym->name)); | |
4308 | } | |
9d958d5b | 4309 | |
72bec0a3 | 4310 | gfc_save_symbol_data (sym); |
077932f9 | 4311 | gfc_set_sym_referenced (sym); |
c2958b6b | 4312 | if (!sym->attr.generic |
60e19868 | 4313 | && !gfc_add_generic (&sym->attr, sym->name, NULL)) |
c2958b6b | 4314 | return MATCH_ERROR; |
4315 | ||
4316 | if (!sym->attr.function | |
60e19868 | 4317 | && !gfc_add_function (&sym->attr, sym->name, NULL)) |
c2958b6b | 4318 | return MATCH_ERROR; |
4319 | ||
9d958d5b | 4320 | if (dt_sym && dt_sym->attr.flavor == FL_DERIVED |
4321 | && dt_sym->attr.pdt_template | |
4322 | && gfc_current_state () != COMP_DERIVED) | |
4323 | { | |
4324 | m = gfc_get_pdt_instance (decl_type_param_list, &dt_sym, NULL); | |
4325 | if (m != MATCH_YES) | |
4326 | return m; | |
4327 | gcc_assert (!dt_sym->attr.pdt_template && dt_sym->attr.pdt_type); | |
4328 | } | |
4329 | ||
c2958b6b | 4330 | if (!dt_sym) |
4331 | { | |
4332 | gfc_interface *intr, *head; | |
4333 | ||
4334 | /* Use upper case to save the actual derived-type symbol. */ | |
4335 | gfc_get_symbol (dt_name, NULL, &dt_sym); | |
dc326dc0 | 4336 | dt_sym->name = gfc_get_string ("%s", sym->name); |
c2958b6b | 4337 | head = sym->generic; |
4338 | intr = gfc_get_interface (); | |
4339 | intr->sym = dt_sym; | |
4340 | intr->where = gfc_current_locus; | |
4341 | intr->next = head; | |
4342 | sym->generic = intr; | |
4343 | sym->attr.if_source = IFSRC_DECL; | |
4344 | } | |
72bec0a3 | 4345 | else |
4346 | gfc_save_symbol_data (dt_sym); | |
c2958b6b | 4347 | |
4348 | gfc_set_sym_referenced (dt_sym); | |
4349 | ||
d7cd448a | 4350 | if (dt_sym->attr.flavor != FL_DERIVED && dt_sym->attr.flavor != FL_STRUCT |
60e19868 | 4351 | && !gfc_add_flavor (&dt_sym->attr, FL_DERIVED, sym->name, NULL)) |
c2958b6b | 4352 | return MATCH_ERROR; |
4353 | ||
4354 | ts->u.derived = dt_sym; | |
4ee9c684 | 4355 | |
4356 | return MATCH_YES; | |
4357 | ||
4358 | get_kind: | |
f446fb22 | 4359 | if (matched_type |
60e19868 | 4360 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
4361 | "intrinsic-type-spec at %C")) | |
f446fb22 | 4362 | return MATCH_ERROR; |
4363 | ||
4ee9c684 | 4364 | /* For all types except double, derived and character, look for an |
4365 | optional kind specifier. MATCH_NO is actually OK at this point. */ | |
39351103 | 4366 | if (implicit_flag == 1) |
f446fb22 | 4367 | { |
4368 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
4369 | return MATCH_ERROR; | |
4370 | ||
4371 | return MATCH_YES; | |
4372 | } | |
4ee9c684 | 4373 | |
18f3698a | 4374 | if (gfc_current_form == FORM_FREE) |
4375 | { | |
2c89e2a0 | 4376 | c = gfc_peek_ascii_char (); |
4377 | if (!gfc_is_whitespace (c) && c != '*' && c != '(' | |
1a9745d2 | 4378 | && c != ':' && c != ',') |
f446fb22 | 4379 | { |
4380 | if (matched_type && c == ')') | |
4381 | { | |
4382 | gfc_next_ascii_char (); | |
4383 | return MATCH_YES; | |
4384 | } | |
4385 | return MATCH_NO; | |
4386 | } | |
18f3698a | 4387 | } |
4388 | ||
67a51c8e | 4389 | m = gfc_match_kind_spec (ts, false); |
4ee9c684 | 4390 | if (m == MATCH_NO && ts->type != BT_CHARACTER) |
9627a89d | 4391 | { |
4392 | m = gfc_match_old_kind_spec (ts); | |
4393 | if (gfc_validate_kind (ts->type, ts->kind, true) == -1) | |
4394 | return MATCH_ERROR; | |
4395 | } | |
4ee9c684 | 4396 | |
f446fb22 | 4397 | if (matched_type && gfc_match_char (')') != MATCH_YES) |
4398 | return MATCH_ERROR; | |
4399 | ||
077932f9 | 4400 | /* Defer association of the KIND expression of function results |
4401 | until after USE and IMPORT statements. */ | |
4402 | if ((gfc_current_state () == COMP_NONE && gfc_error_flag_test ()) | |
4403 | || gfc_matching_function) | |
4404 | return MATCH_YES; | |
4405 | ||
4ee9c684 | 4406 | if (m == MATCH_NO) |
4407 | m = MATCH_YES; /* No kind specifier found. */ | |
4408 | ||
4409 | return m; | |
4410 | } | |
4411 | ||
4412 | ||
39351103 | 4413 | /* Match an IMPLICIT NONE statement. Actually, this statement is |
4414 | already matched in parse.c, or we would not end up here in the | |
4415 | first place. So the only thing we need to check, is if there is | |
4416 | trailing garbage. If not, the match is successful. */ | |
4417 | ||
4418 | match | |
4419 | gfc_match_implicit_none (void) | |
4420 | { | |
0daab503 | 4421 | char c; |
4422 | match m; | |
4423 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4424 | bool type = false; | |
4425 | bool external = false; | |
94fea777 | 4426 | locus cur_loc = gfc_current_locus; |
4427 | ||
4428 | if (gfc_current_ns->seen_implicit_none | |
4429 | || gfc_current_ns->has_implicit_none_export) | |
4430 | { | |
4431 | gfc_error ("Duplicate IMPLICIT NONE statement at %C"); | |
4432 | return MATCH_ERROR; | |
4433 | } | |
0daab503 | 4434 | |
4435 | gfc_gobble_whitespace (); | |
4436 | c = gfc_peek_ascii_char (); | |
4437 | if (c == '(') | |
4438 | { | |
4439 | (void) gfc_next_ascii_char (); | |
003e134b | 4440 | if (!gfc_notify_std (GFC_STD_F2018, "IMPORT NONE with spec list at %C")) |
0daab503 | 4441 | return MATCH_ERROR; |
94fea777 | 4442 | |
4443 | gfc_gobble_whitespace (); | |
4444 | if (gfc_peek_ascii_char () == ')') | |
0daab503 | 4445 | { |
94fea777 | 4446 | (void) gfc_next_ascii_char (); |
4447 | type = true; | |
4448 | } | |
4449 | else | |
4450 | for(;;) | |
4451 | { | |
4452 | m = gfc_match (" %n", name); | |
4453 | if (m != MATCH_YES) | |
4454 | return MATCH_ERROR; | |
0daab503 | 4455 | |
94fea777 | 4456 | if (strcmp (name, "type") == 0) |
4457 | type = true; | |
4458 | else if (strcmp (name, "external") == 0) | |
4459 | external = true; | |
4460 | else | |
4461 | return MATCH_ERROR; | |
0daab503 | 4462 | |
94fea777 | 4463 | gfc_gobble_whitespace (); |
4464 | c = gfc_next_ascii_char (); | |
4465 | if (c == ',') | |
4466 | continue; | |
4467 | if (c == ')') | |
4468 | break; | |
4469 | return MATCH_ERROR; | |
4470 | } | |
0daab503 | 4471 | } |
4472 | else | |
4473 | type = true; | |
4474 | ||
4475 | if (gfc_match_eos () != MATCH_YES) | |
4476 | return MATCH_ERROR; | |
4477 | ||
94fea777 | 4478 | gfc_set_implicit_none (type, external, &cur_loc); |
0daab503 | 4479 | |
4480 | return MATCH_YES; | |
39351103 | 4481 | } |
4482 | ||
4483 | ||
4484 | /* Match the letter range(s) of an IMPLICIT statement. */ | |
4485 | ||
4486 | static match | |
b70528c7 | 4487 | match_implicit_range (void) |
39351103 | 4488 | { |
e0be6f02 | 4489 | char c, c1, c2; |
4490 | int inner; | |
39351103 | 4491 | locus cur_loc; |
4492 | ||
4493 | cur_loc = gfc_current_locus; | |
4494 | ||
4495 | gfc_gobble_whitespace (); | |
e0be6f02 | 4496 | c = gfc_next_ascii_char (); |
39351103 | 4497 | if (c != '(') |
4498 | { | |
4499 | gfc_error ("Missing character range in IMPLICIT at %C"); | |
4500 | goto bad; | |
4501 | } | |
4502 | ||
4503 | inner = 1; | |
4504 | while (inner) | |
4505 | { | |
4506 | gfc_gobble_whitespace (); | |
e0be6f02 | 4507 | c1 = gfc_next_ascii_char (); |
39351103 | 4508 | if (!ISALPHA (c1)) |
4509 | goto bad; | |
4510 | ||
4511 | gfc_gobble_whitespace (); | |
e0be6f02 | 4512 | c = gfc_next_ascii_char (); |
39351103 | 4513 | |
4514 | switch (c) | |
4515 | { | |
4516 | case ')': | |
f6d0e37a | 4517 | inner = 0; /* Fall through. */ |
39351103 | 4518 | |
4519 | case ',': | |
4520 | c2 = c1; | |
4521 | break; | |
4522 | ||
4523 | case '-': | |
4524 | gfc_gobble_whitespace (); | |
e0be6f02 | 4525 | c2 = gfc_next_ascii_char (); |
39351103 | 4526 | if (!ISALPHA (c2)) |
4527 | goto bad; | |
4528 | ||
4529 | gfc_gobble_whitespace (); | |
e0be6f02 | 4530 | c = gfc_next_ascii_char (); |
39351103 | 4531 | |
4532 | if ((c != ',') && (c != ')')) | |
4533 | goto bad; | |
4534 | if (c == ')') | |
4535 | inner = 0; | |
4536 | ||
4537 | break; | |
4538 | ||
4539 | default: | |
4540 | goto bad; | |
4541 | } | |
4542 | ||
4543 | if (c1 > c2) | |
4544 | { | |
4545 | gfc_error ("Letters must be in alphabetic order in " | |
4546 | "IMPLICIT statement at %C"); | |
4547 | goto bad; | |
4548 | } | |
4549 | ||
4550 | /* See if we can add the newly matched range to the pending | |
1a9745d2 | 4551 | implicits from this IMPLICIT statement. We do not check for |
4552 | conflicts with whatever earlier IMPLICIT statements may have | |
4553 | set. This is done when we've successfully finished matching | |
4554 | the current one. */ | |
60e19868 | 4555 | if (!gfc_add_new_implicit_range (c1, c2)) |
39351103 | 4556 | goto bad; |
4557 | } | |
4558 | ||
4559 | return MATCH_YES; | |
4560 | ||
4561 | bad: | |
4562 | gfc_syntax_error (ST_IMPLICIT); | |
4563 | ||
4564 | gfc_current_locus = cur_loc; | |
4565 | return MATCH_ERROR; | |
4566 | } | |
4567 | ||
4568 | ||
4569 | /* Match an IMPLICIT statement, storing the types for | |
4570 | gfc_set_implicit() if the statement is accepted by the parser. | |
4571 | There is a strange looking, but legal syntactic construction | |
4572 | possible. It looks like: | |
4573 | ||
4574 | IMPLICIT INTEGER (a-b) (c-d) | |
4575 | ||
4576 | This is legal if "a-b" is a constant expression that happens to | |
4577 | equal one of the legal kinds for integers. The real problem | |
4578 | happens with an implicit specification that looks like: | |
4579 | ||
4580 | IMPLICIT INTEGER (a-b) | |
4581 | ||
4582 | In this case, a typespec matcher that is "greedy" (as most of the | |
4583 | matchers are) gobbles the character range as a kindspec, leaving | |
4584 | nothing left. We therefore have to go a bit more slowly in the | |
4585 | matching process by inhibiting the kindspec checking during | |
4586 | typespec matching and checking for a kind later. */ | |
4587 | ||
4588 | match | |
4589 | gfc_match_implicit (void) | |
4590 | { | |
4591 | gfc_typespec ts; | |
4592 | locus cur_loc; | |
e0be6f02 | 4593 | char c; |
39351103 | 4594 | match m; |
4595 | ||
0daab503 | 4596 | if (gfc_current_ns->seen_implicit_none) |
4597 | { | |
4598 | gfc_error ("IMPLICIT statement at %C following an IMPLICIT NONE (type) " | |
4599 | "statement"); | |
4600 | return MATCH_ERROR; | |
4601 | } | |
4602 | ||
52179f31 | 4603 | gfc_clear_ts (&ts); |
4604 | ||
39351103 | 4605 | /* We don't allow empty implicit statements. */ |
4606 | if (gfc_match_eos () == MATCH_YES) | |
4607 | { | |
4608 | gfc_error ("Empty IMPLICIT statement at %C"); | |
4609 | return MATCH_ERROR; | |
4610 | } | |
4611 | ||
39351103 | 4612 | do |
4613 | { | |
b70528c7 | 4614 | /* First cleanup. */ |
4615 | gfc_clear_new_implicit (); | |
4616 | ||
39351103 | 4617 | /* A basic type is mandatory here. */ |
e8152f13 | 4618 | m = gfc_match_decl_type_spec (&ts, 1); |
39351103 | 4619 | if (m == MATCH_ERROR) |
4620 | goto error; | |
4621 | if (m == MATCH_NO) | |
4622 | goto syntax; | |
4623 | ||
4624 | cur_loc = gfc_current_locus; | |
b70528c7 | 4625 | m = match_implicit_range (); |
39351103 | 4626 | |
4627 | if (m == MATCH_YES) | |
4628 | { | |
b70528c7 | 4629 | /* We may have <TYPE> (<RANGE>). */ |
39351103 | 4630 | gfc_gobble_whitespace (); |
94fea777 | 4631 | c = gfc_peek_ascii_char (); |
4632 | if (c == ',' || c == '\n' || c == ';' || c == '!') | |
b70528c7 | 4633 | { |
4634 | /* Check for CHARACTER with no length parameter. */ | |
eeebe20b | 4635 | if (ts.type == BT_CHARACTER && !ts.u.cl) |
b70528c7 | 4636 | { |
b8a891cb | 4637 | ts.kind = gfc_default_character_kind; |
d270ce52 | 4638 | ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
9f4d9f83 | 4639 | ts.u.cl->length = gfc_get_int_expr (gfc_charlen_int_kind, |
126387b5 | 4640 | NULL, 1); |
b70528c7 | 4641 | } |
4642 | ||
4643 | /* Record the Successful match. */ | |
60e19868 | 4644 | if (!gfc_merge_new_implicit (&ts)) |
b70528c7 | 4645 | return MATCH_ERROR; |
94fea777 | 4646 | if (c == ',') |
4647 | c = gfc_next_ascii_char (); | |
4648 | else if (gfc_match_eos () == MATCH_ERROR) | |
4649 | goto error; | |
b70528c7 | 4650 | continue; |
4651 | } | |
39351103 | 4652 | |
4653 | gfc_current_locus = cur_loc; | |
4654 | } | |
4655 | ||
b70528c7 | 4656 | /* Discard the (incorrectly) matched range. */ |
4657 | gfc_clear_new_implicit (); | |
4658 | ||
4659 | /* Last chance -- check <TYPE> <SELECTOR> (<RANGE>). */ | |
4660 | if (ts.type == BT_CHARACTER) | |
10f5dcc0 | 4661 | m = gfc_match_char_spec (&ts); |
b70528c7 | 4662 | else |
39351103 | 4663 | { |
67a51c8e | 4664 | m = gfc_match_kind_spec (&ts, false); |
39351103 | 4665 | if (m == MATCH_NO) |
b70528c7 | 4666 | { |
4667 | m = gfc_match_old_kind_spec (&ts); | |
4668 | if (m == MATCH_ERROR) | |
4669 | goto error; | |
4670 | if (m == MATCH_NO) | |
4671 | goto syntax; | |
4672 | } | |
39351103 | 4673 | } |
b70528c7 | 4674 | if (m == MATCH_ERROR) |
4675 | goto error; | |
39351103 | 4676 | |
b70528c7 | 4677 | m = match_implicit_range (); |
39351103 | 4678 | if (m == MATCH_ERROR) |
4679 | goto error; | |
4680 | if (m == MATCH_NO) | |
4681 | goto syntax; | |
4682 | ||
4683 | gfc_gobble_whitespace (); | |
e0be6f02 | 4684 | c = gfc_next_ascii_char (); |
94fea777 | 4685 | if (c != ',' && gfc_match_eos () != MATCH_YES) |
39351103 | 4686 | goto syntax; |
4687 | ||
60e19868 | 4688 | if (!gfc_merge_new_implicit (&ts)) |
b70528c7 | 4689 | return MATCH_ERROR; |
39351103 | 4690 | } |
4691 | while (c == ','); | |
4692 | ||
b70528c7 | 4693 | return MATCH_YES; |
39351103 | 4694 | |
4695 | syntax: | |
4696 | gfc_syntax_error (ST_IMPLICIT); | |
4697 | ||
4698 | error: | |
4699 | return MATCH_ERROR; | |
4700 | } | |
4701 | ||
f6d0e37a | 4702 | |
d67fc9ae | 4703 | match |
4704 | gfc_match_import (void) | |
4705 | { | |
4706 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4707 | match m; | |
4708 | gfc_symbol *sym; | |
4709 | gfc_symtree *st; | |
4710 | ||
f6d0e37a | 4711 | if (gfc_current_ns->proc_name == NULL |
4712 | || gfc_current_ns->proc_name->attr.if_source != IFSRC_IFBODY) | |
d67fc9ae | 4713 | { |
4714 | gfc_error ("IMPORT statement at %C only permitted in " | |
4715 | "an INTERFACE body"); | |
4716 | return MATCH_ERROR; | |
4717 | } | |
4718 | ||
4b8eb6ca | 4719 | if (gfc_current_ns->proc_name->attr.module_procedure) |
4720 | { | |
4721 | gfc_error ("F2008: C1210 IMPORT statement at %C is not permitted " | |
4722 | "in a module procedure interface body"); | |
4723 | return MATCH_ERROR; | |
4724 | } | |
4725 | ||
60e19868 | 4726 | if (!gfc_notify_std (GFC_STD_F2003, "IMPORT statement at %C")) |
d67fc9ae | 4727 | return MATCH_ERROR; |
4728 | ||
4729 | if (gfc_match_eos () == MATCH_YES) | |
4730 | { | |
4731 | /* All host variables should be imported. */ | |
4732 | gfc_current_ns->has_import_set = 1; | |
4733 | return MATCH_YES; | |
4734 | } | |
4735 | ||
4736 | if (gfc_match (" ::") == MATCH_YES) | |
4737 | { | |
4738 | if (gfc_match_eos () == MATCH_YES) | |
1a9745d2 | 4739 | { |
4740 | gfc_error ("Expecting list of named entities at %C"); | |
4741 | return MATCH_ERROR; | |
4742 | } | |
d67fc9ae | 4743 | } |
4744 | ||
4745 | for(;;) | |
4746 | { | |
495e197c | 4747 | sym = NULL; |
d67fc9ae | 4748 | m = gfc_match (" %n", name); |
4749 | switch (m) | |
4750 | { | |
4751 | case MATCH_YES: | |
096d4ad9 | 4752 | if (gfc_current_ns->parent != NULL |
f6d0e37a | 4753 | && gfc_find_symbol (name, gfc_current_ns->parent, 1, &sym)) |
096d4ad9 | 4754 | { |
716da296 | 4755 | gfc_error ("Type name %qs at %C is ambiguous", name); |
096d4ad9 | 4756 | return MATCH_ERROR; |
4757 | } | |
6b010511 | 4758 | else if (!sym && gfc_current_ns->proc_name->ns->parent != NULL |
f6d0e37a | 4759 | && gfc_find_symbol (name, |
4760 | gfc_current_ns->proc_name->ns->parent, | |
4761 | 1, &sym)) | |
1a9745d2 | 4762 | { |
716da296 | 4763 | gfc_error ("Type name %qs at %C is ambiguous", name); |
1a9745d2 | 4764 | return MATCH_ERROR; |
4765 | } | |
4766 | ||
4767 | if (sym == NULL) | |
4768 | { | |
716da296 | 4769 | gfc_error ("Cannot IMPORT %qs from host scoping unit " |
1a9745d2 | 4770 | "at %C - does not exist.", name); |
4771 | return MATCH_ERROR; | |
4772 | } | |
4773 | ||
d67dd34f | 4774 | if (gfc_find_symtree (gfc_current_ns->sym_root, name)) |
1a9745d2 | 4775 | { |
6f521718 | 4776 | gfc_warning (0, "%qs is already IMPORTed from host scoping unit " |
4166acc7 | 4777 | "at %C", name); |
1a9745d2 | 4778 | goto next_item; |
4779 | } | |
4780 | ||
d67dd34f | 4781 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); |
1a9745d2 | 4782 | st->n.sym = sym; |
4783 | sym->refs++; | |
c723595c | 4784 | sym->attr.imported = 1; |
d67fc9ae | 4785 | |
c2958b6b | 4786 | if (sym->attr.generic && (sym = gfc_find_dt_in_generic (sym))) |
4787 | { | |
4788 | /* The actual derived type is stored in a symtree with the first | |
df084314 | 4789 | letter of the name capitalized; the symtree with the all |
293d72e0 | 4790 | lower-case name contains the associated generic function. */ |
c2958b6b | 4791 | st = gfc_new_symtree (&gfc_current_ns->sym_root, |
d7cd448a | 4792 | gfc_dt_upper_string (name)); |
c2958b6b | 4793 | st->n.sym = sym; |
4794 | sym->refs++; | |
4795 | sym->attr.imported = 1; | |
4796 | } | |
4797 | ||
d67fc9ae | 4798 | goto next_item; |
4799 | ||
4800 | case MATCH_NO: | |
4801 | break; | |
4802 | ||
4803 | case MATCH_ERROR: | |
4804 | return MATCH_ERROR; | |
4805 | } | |
4806 | ||
4807 | next_item: | |
4808 | if (gfc_match_eos () == MATCH_YES) | |
4809 | break; | |
4810 | if (gfc_match_char (',') != MATCH_YES) | |
4811 | goto syntax; | |
4812 | } | |
4813 | ||
4814 | return MATCH_YES; | |
4815 | ||
4816 | syntax: | |
4817 | gfc_error ("Syntax error in IMPORT statement at %C"); | |
4818 | return MATCH_ERROR; | |
4819 | } | |
39351103 | 4820 | |
f6d0e37a | 4821 | |
c72e5f7e | 4822 | /* A minimal implementation of gfc_match without whitespace, escape |
4823 | characters or variable arguments. Returns true if the next | |
4824 | characters match the TARGET template exactly. */ | |
4825 | ||
4826 | static bool | |
4827 | match_string_p (const char *target) | |
4828 | { | |
4829 | const char *p; | |
4830 | ||
4831 | for (p = target; *p; p++) | |
e0be6f02 | 4832 | if ((char) gfc_next_ascii_char () != *p) |
c72e5f7e | 4833 | return false; |
4834 | return true; | |
4835 | } | |
4836 | ||
4ee9c684 | 4837 | /* Matches an attribute specification including array specs. If |
4838 | successful, leaves the variables current_attr and current_as | |
4839 | holding the specification. Also sets the colon_seen variable for | |
4840 | later use by matchers associated with initializations. | |
4841 | ||
4842 | This subroutine is a little tricky in the sense that we don't know | |
4843 | if we really have an attr-spec until we hit the double colon. | |
4844 | Until that time, we can only return MATCH_NO. This forces us to | |
4845 | check for duplicate specification at this level. */ | |
4846 | ||
4847 | static match | |
4848 | match_attr_spec (void) | |
4849 | { | |
4ee9c684 | 4850 | /* Modifiers that can exist in a type statement. */ |
d55c3689 | 4851 | enum |
55be378c | 4852 | { GFC_DECL_BEGIN = 0, DECL_ALLOCATABLE = GFC_DECL_BEGIN, |
4853 | DECL_IN = INTENT_IN, DECL_OUT = INTENT_OUT, DECL_INOUT = INTENT_INOUT, | |
4854 | DECL_DIMENSION, DECL_EXTERNAL, | |
4855 | DECL_INTRINSIC, DECL_OPTIONAL, | |
3ea52af3 | 4856 | DECL_PARAMETER, DECL_POINTER, DECL_PROTECTED, DECL_PRIVATE, |
8e652fcf | 4857 | DECL_STATIC, DECL_AUTOMATIC, |
3ea52af3 | 4858 | DECL_PUBLIC, DECL_SAVE, DECL_TARGET, DECL_VALUE, DECL_VOLATILE, |
b3c3927c | 4859 | DECL_IS_BIND_C, DECL_CODIMENSION, DECL_ASYNCHRONOUS, DECL_CONTIGUOUS, |
9d958d5b | 4860 | DECL_LEN, DECL_KIND, DECL_NONE, GFC_DECL_END /* Sentinel */ |
d55c3689 | 4861 | }; |
4ee9c684 | 4862 | |
4863 | /* GFC_DECL_END is the sentinel, index starts at 0. */ | |
4864 | #define NUM_DECL GFC_DECL_END | |
4865 | ||
55be378c | 4866 | /* Make sure that values from sym_intent are safe to be used here. */ |
4867 | gcc_assert (INTENT_IN > 0); | |
4868 | ||
4ee9c684 | 4869 | locus start, seen_at[NUM_DECL]; |
4870 | int seen[NUM_DECL]; | |
9f1b7d17 | 4871 | unsigned int d; |
4ee9c684 | 4872 | const char *attr; |
4873 | match m; | |
60e19868 | 4874 | bool t; |
4ee9c684 | 4875 | |
4876 | gfc_clear_attr (¤t_attr); | |
cbb9e6aa | 4877 | start = gfc_current_locus; |
4ee9c684 | 4878 | |
4879 | current_as = NULL; | |
4880 | colon_seen = 0; | |
8ef2cf76 | 4881 | attr_seen = 0; |
4ee9c684 | 4882 | |
4883 | /* See if we get all of the keywords up to the final double colon. */ | |
4884 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
4885 | seen[d] = 0; | |
4886 | ||
4887 | for (;;) | |
4888 | { | |
e0be6f02 | 4889 | char ch; |
c5d33754 | 4890 | |
c72e5f7e | 4891 | d = DECL_NONE; |
4892 | gfc_gobble_whitespace (); | |
4893 | ||
e0be6f02 | 4894 | ch = gfc_next_ascii_char (); |
c72e5f7e | 4895 | if (ch == ':') |
4896 | { | |
4897 | /* This is the successful exit condition for the loop. */ | |
e0be6f02 | 4898 | if (gfc_next_ascii_char () == ':') |
c72e5f7e | 4899 | break; |
4900 | } | |
4901 | else if (ch == ',') | |
c5d33754 | 4902 | { |
c5d33754 | 4903 | gfc_gobble_whitespace (); |
e0be6f02 | 4904 | switch (gfc_peek_ascii_char ()) |
c5d33754 | 4905 | { |
c72e5f7e | 4906 | case 'a': |
738928be | 4907 | gfc_next_ascii_char (); |
4908 | switch (gfc_next_ascii_char ()) | |
4909 | { | |
4910 | case 'l': | |
4911 | if (match_string_p ("locatable")) | |
4912 | { | |
4913 | /* Matched "allocatable". */ | |
4914 | d = DECL_ALLOCATABLE; | |
4915 | } | |
4916 | break; | |
4917 | ||
4918 | case 's': | |
4919 | if (match_string_p ("ynchronous")) | |
4920 | { | |
4921 | /* Matched "asynchronous". */ | |
4922 | d = DECL_ASYNCHRONOUS; | |
4923 | } | |
4924 | break; | |
8e652fcf | 4925 | |
4926 | case 'u': | |
4927 | if (match_string_p ("tomatic")) | |
4928 | { | |
4929 | /* Matched "automatic". */ | |
4930 | d = DECL_AUTOMATIC; | |
4931 | } | |
4932 | break; | |
738928be | 4933 | } |
b3c3927c | 4934 | break; |
c72e5f7e | 4935 | |
4936 | case 'b': | |
c5d33754 | 4937 | /* Try and match the bind(c). */ |
75ae7f6c | 4938 | m = gfc_match_bind_c (NULL, true); |
5cf92482 | 4939 | if (m == MATCH_YES) |
c5d33754 | 4940 | d = DECL_IS_BIND_C; |
5cf92482 | 4941 | else if (m == MATCH_ERROR) |
4942 | goto cleanup; | |
c72e5f7e | 4943 | break; |
4944 | ||
aff518b0 | 4945 | case 'c': |
b3c3927c | 4946 | gfc_next_ascii_char (); |
4947 | if ('o' != gfc_next_ascii_char ()) | |
4948 | break; | |
4949 | switch (gfc_next_ascii_char ()) | |
4950 | { | |
4951 | case 'd': | |
4952 | if (match_string_p ("imension")) | |
4953 | { | |
4954 | d = DECL_CODIMENSION; | |
4955 | break; | |
4956 | } | |
e3533433 | 4957 | /* FALLTHRU */ |
b3c3927c | 4958 | case 'n': |
4959 | if (match_string_p ("tiguous")) | |
4960 | { | |
4961 | d = DECL_CONTIGUOUS; | |
4962 | break; | |
4963 | } | |
4964 | } | |
aff518b0 | 4965 | break; |
4966 | ||
c72e5f7e | 4967 | case 'd': |
4968 | if (match_string_p ("dimension")) | |
4969 | d = DECL_DIMENSION; | |
4970 | break; | |
4971 | ||
4972 | case 'e': | |
4973 | if (match_string_p ("external")) | |
4974 | d = DECL_EXTERNAL; | |
4975 | break; | |
4976 | ||
4977 | case 'i': | |
4978 | if (match_string_p ("int")) | |
4979 | { | |
e0be6f02 | 4980 | ch = gfc_next_ascii_char (); |
c72e5f7e | 4981 | if (ch == 'e') |
4982 | { | |
4983 | if (match_string_p ("nt")) | |
4984 | { | |
4985 | /* Matched "intent". */ | |
55be378c | 4986 | d = match_intent_spec (); |
4987 | if (d == INTENT_UNKNOWN) | |
4988 | { | |
4989 | m = MATCH_ERROR; | |
4990 | goto cleanup; | |
4991 | } | |
c72e5f7e | 4992 | } |
4993 | } | |
4994 | else if (ch == 'r') | |
4995 | { | |
4996 | if (match_string_p ("insic")) | |
4997 | { | |
4998 | /* Matched "intrinsic". */ | |
4999 | d = DECL_INTRINSIC; | |
5000 | } | |
5001 | } | |
5002 | } | |
5003 | break; | |
5004 | ||
9d958d5b | 5005 | case 'k': |
5006 | if (match_string_p ("kind")) | |
5007 | d = DECL_KIND; | |
5008 | break; | |
5009 | ||
5010 | case 'l': | |
5011 | if (match_string_p ("len")) | |
5012 | d = DECL_LEN; | |
5013 | break; | |
5014 | ||
c72e5f7e | 5015 | case 'o': |
5016 | if (match_string_p ("optional")) | |
5017 | d = DECL_OPTIONAL; | |
5018 | break; | |
5019 | ||
5020 | case 'p': | |
e0be6f02 | 5021 | gfc_next_ascii_char (); |
5022 | switch (gfc_next_ascii_char ()) | |
c72e5f7e | 5023 | { |
5024 | case 'a': | |
5025 | if (match_string_p ("rameter")) | |
5026 | { | |
5027 | /* Matched "parameter". */ | |
5028 | d = DECL_PARAMETER; | |
5029 | } | |
5030 | break; | |
5031 | ||
5032 | case 'o': | |
5033 | if (match_string_p ("inter")) | |
5034 | { | |
5035 | /* Matched "pointer". */ | |
5036 | d = DECL_POINTER; | |
5037 | } | |
5038 | break; | |
5039 | ||
5040 | case 'r': | |
e0be6f02 | 5041 | ch = gfc_next_ascii_char (); |
c72e5f7e | 5042 | if (ch == 'i') |
5043 | { | |
5044 | if (match_string_p ("vate")) | |
5045 | { | |
5046 | /* Matched "private". */ | |
5047 | d = DECL_PRIVATE; | |
5048 | } | |
5049 | } | |
5050 | else if (ch == 'o') | |
5051 | { | |
5052 | if (match_string_p ("tected")) | |
5053 | { | |
5054 | /* Matched "protected". */ | |
5055 | d = DECL_PROTECTED; | |
5056 | } | |
5057 | } | |
5058 | break; | |
5059 | ||
5060 | case 'u': | |
5061 | if (match_string_p ("blic")) | |
5062 | { | |
5063 | /* Matched "public". */ | |
5064 | d = DECL_PUBLIC; | |
5065 | } | |
5066 | break; | |
5067 | } | |
5068 | break; | |
5069 | ||
5070 | case 's': | |
8e652fcf | 5071 | gfc_next_ascii_char (); |
5072 | switch (gfc_next_ascii_char ()) | |
5073 | { | |
5074 | case 'a': | |
5075 | if (match_string_p ("ve")) | |
5076 | { | |
5077 | /* Matched "save". */ | |
5078 | d = DECL_SAVE; | |
5079 | } | |
5080 | break; | |
5081 | ||
5082 | case 't': | |
5083 | if (match_string_p ("atic")) | |
5084 | { | |
5085 | /* Matched "static". */ | |
5086 | d = DECL_STATIC; | |
5087 | } | |
5088 | break; | |
5089 | } | |
c72e5f7e | 5090 | break; |
5091 | ||
5092 | case 't': | |
5093 | if (match_string_p ("target")) | |
5094 | d = DECL_TARGET; | |
5095 | break; | |
5096 | ||
5097 | case 'v': | |
e0be6f02 | 5098 | gfc_next_ascii_char (); |
5099 | ch = gfc_next_ascii_char (); | |
c72e5f7e | 5100 | if (ch == 'a') |
5101 | { | |
5102 | if (match_string_p ("lue")) | |
5103 | { | |
5104 | /* Matched "value". */ | |
5105 | d = DECL_VALUE; | |
5106 | } | |
5107 | } | |
5108 | else if (ch == 'o') | |
5109 | { | |
5110 | if (match_string_p ("latile")) | |
5111 | { | |
5112 | /* Matched "volatile". */ | |
5113 | d = DECL_VOLATILE; | |
5114 | } | |
5115 | } | |
5116 | break; | |
c5d33754 | 5117 | } |
5118 | } | |
f3f9b222 | 5119 | |
c72e5f7e | 5120 | /* No double colon and no recognizable decl_type, so assume that |
5121 | we've been looking at something else the whole time. */ | |
5122 | if (d == DECL_NONE) | |
5123 | { | |
5124 | m = MATCH_NO; | |
5125 | goto cleanup; | |
5126 | } | |
e14bee04 | 5127 | |
7e221851 | 5128 | /* Check to make sure any parens are paired up correctly. */ |
5129 | if (gfc_match_parens () == MATCH_ERROR) | |
5130 | { | |
5131 | m = MATCH_ERROR; | |
5132 | goto cleanup; | |
5133 | } | |
5134 | ||
4ee9c684 | 5135 | seen[d]++; |
cbb9e6aa | 5136 | seen_at[d] = gfc_current_locus; |
4ee9c684 | 5137 | |
e97ac7c0 | 5138 | if (d == DECL_DIMENSION || d == DECL_CODIMENSION) |
4ee9c684 | 5139 | { |
e97ac7c0 | 5140 | gfc_array_spec *as = NULL; |
4ee9c684 | 5141 | |
e97ac7c0 | 5142 | m = gfc_match_array_spec (&as, d == DECL_DIMENSION, |
5143 | d == DECL_CODIMENSION); | |
5144 | ||
5145 | if (current_as == NULL) | |
5146 | current_as = as; | |
5147 | else if (m == MATCH_YES) | |
4ee9c684 | 5148 | { |
60e19868 | 5149 | if (!merge_array_spec (as, current_as, false)) |
9b58b4c7 | 5150 | m = MATCH_ERROR; |
434f0922 | 5151 | free (as); |
4ee9c684 | 5152 | } |
5153 | ||
aff518b0 | 5154 | if (m == MATCH_NO) |
5155 | { | |
e97ac7c0 | 5156 | if (d == DECL_CODIMENSION) |
5157 | gfc_error ("Missing codimension specification at %C"); | |
5158 | else | |
5159 | gfc_error ("Missing dimension specification at %C"); | |
aff518b0 | 5160 | m = MATCH_ERROR; |
5161 | } | |
5162 | ||
5163 | if (m == MATCH_ERROR) | |
5164 | goto cleanup; | |
5165 | } | |
4ee9c684 | 5166 | } |
5167 | ||
4ee9c684 | 5168 | /* Since we've seen a double colon, we have to be looking at an |
5169 | attr-spec. This means that we can now issue errors. */ | |
5170 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
5171 | if (seen[d] > 1) | |
5172 | { | |
5173 | switch (d) | |
5174 | { | |
5175 | case DECL_ALLOCATABLE: | |
5176 | attr = "ALLOCATABLE"; | |
5177 | break; | |
738928be | 5178 | case DECL_ASYNCHRONOUS: |
5179 | attr = "ASYNCHRONOUS"; | |
5180 | break; | |
aff518b0 | 5181 | case DECL_CODIMENSION: |
5182 | attr = "CODIMENSION"; | |
5183 | break; | |
b3c3927c | 5184 | case DECL_CONTIGUOUS: |
5185 | attr = "CONTIGUOUS"; | |
5186 | break; | |
4ee9c684 | 5187 | case DECL_DIMENSION: |
5188 | attr = "DIMENSION"; | |
5189 | break; | |
5190 | case DECL_EXTERNAL: | |
5191 | attr = "EXTERNAL"; | |
5192 | break; | |
5193 | case DECL_IN: | |
5194 | attr = "INTENT (IN)"; | |
5195 | break; | |
5196 | case DECL_OUT: | |
5197 | attr = "INTENT (OUT)"; | |
5198 | break; | |
5199 | case DECL_INOUT: | |
5200 | attr = "INTENT (IN OUT)"; | |
5201 | break; | |
5202 | case DECL_INTRINSIC: | |
5203 | attr = "INTRINSIC"; | |
5204 | break; | |
5205 | case DECL_OPTIONAL: | |
5206 | attr = "OPTIONAL"; | |
5207 | break; | |
9d958d5b | 5208 | case DECL_KIND: |
5209 | attr = "KIND"; | |
5210 | break; | |
5211 | case DECL_LEN: | |
5212 | attr = "LEN"; | |
5213 | break; | |
4ee9c684 | 5214 | case DECL_PARAMETER: |
5215 | attr = "PARAMETER"; | |
5216 | break; | |
5217 | case DECL_POINTER: | |
5218 | attr = "POINTER"; | |
5219 | break; | |
3ea52af3 | 5220 | case DECL_PROTECTED: |
5221 | attr = "PROTECTED"; | |
5222 | break; | |
4ee9c684 | 5223 | case DECL_PRIVATE: |
5224 | attr = "PRIVATE"; | |
5225 | break; | |
5226 | case DECL_PUBLIC: | |
5227 | attr = "PUBLIC"; | |
5228 | break; | |
5229 | case DECL_SAVE: | |
5230 | attr = "SAVE"; | |
5231 | break; | |
8e652fcf | 5232 | case DECL_STATIC: |
5233 | attr = "STATIC"; | |
5234 | break; | |
5235 | case DECL_AUTOMATIC: | |
5236 | attr = "AUTOMATIC"; | |
5237 | break; | |
4ee9c684 | 5238 | case DECL_TARGET: |
5239 | attr = "TARGET"; | |
5240 | break; | |
c5d33754 | 5241 | case DECL_IS_BIND_C: |
5242 | attr = "IS_BIND_C"; | |
5243 | break; | |
5244 | case DECL_VALUE: | |
5245 | attr = "VALUE"; | |
5246 | break; | |
ef814c81 | 5247 | case DECL_VOLATILE: |
5248 | attr = "VOLATILE"; | |
5249 | break; | |
4ee9c684 | 5250 | default: |
f6d0e37a | 5251 | attr = NULL; /* This shouldn't happen. */ |
4ee9c684 | 5252 | } |
5253 | ||
5254 | gfc_error ("Duplicate %s attribute at %L", attr, &seen_at[d]); | |
5255 | m = MATCH_ERROR; | |
5256 | goto cleanup; | |
5257 | } | |
5258 | ||
5259 | /* Now that we've dealt with duplicate attributes, add the attributes | |
5260 | to the current attribute. */ | |
5261 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
5262 | { | |
5263 | if (seen[d] == 0) | |
5264 | continue; | |
8ef2cf76 | 5265 | else |
5266 | attr_seen = 1; | |
4ee9c684 | 5267 | |
8e652fcf | 5268 | if ((d == DECL_STATIC || d == DECL_AUTOMATIC) |
5269 | && !flag_dec_static) | |
5270 | { | |
841da9cf | 5271 | gfc_error ("%s at %L is a DEC extension, enable with " |
5272 | "%<-fdec-static%>", | |
8e652fcf | 5273 | d == DECL_STATIC ? "STATIC" : "AUTOMATIC", &seen_at[d]); |
5274 | m = MATCH_ERROR; | |
5275 | goto cleanup; | |
5276 | } | |
5277 | /* Allow SAVE with STATIC, but don't complain. */ | |
5278 | if (d == DECL_STATIC && seen[DECL_SAVE]) | |
5279 | continue; | |
5280 | ||
4ee9c684 | 5281 | if (gfc_current_state () == COMP_DERIVED |
aff518b0 | 5282 | && d != DECL_DIMENSION && d != DECL_CODIMENSION |
5283 | && d != DECL_POINTER && d != DECL_PRIVATE | |
b3c3927c | 5284 | && d != DECL_PUBLIC && d != DECL_CONTIGUOUS && d != DECL_NONE) |
4ee9c684 | 5285 | { |
2294b616 | 5286 | if (d == DECL_ALLOCATABLE) |
5287 | { | |
60e19868 | 5288 | if (!gfc_notify_std (GFC_STD_F2003, "ALLOCATABLE " |
5289 | "attribute at %C in a TYPE definition")) | |
2294b616 | 5290 | { |
5291 | m = MATCH_ERROR; | |
5292 | goto cleanup; | |
5293 | } | |
1a9745d2 | 5294 | } |
9d958d5b | 5295 | else if (d == DECL_KIND) |
5296 | { | |
5297 | if (!gfc_notify_std (GFC_STD_F2003, "KIND " | |
5298 | "attribute at %C in a TYPE definition")) | |
5299 | { | |
5300 | m = MATCH_ERROR; | |
5301 | goto cleanup; | |
5302 | } | |
5303 | if (current_ts.type != BT_INTEGER) | |
5304 | { | |
5305 | gfc_error ("Component with KIND attribute at %C must be " | |
5306 | "INTEGER"); | |
5307 | m = MATCH_ERROR; | |
5308 | goto cleanup; | |
5309 | } | |
5310 | if (current_ts.kind != gfc_default_integer_kind) | |
5311 | { | |
5312 | gfc_error ("Component with KIND attribute at %C must be " | |
5313 | "default integer kind (%d)", | |
5314 | gfc_default_integer_kind); | |
5315 | m = MATCH_ERROR; | |
5316 | goto cleanup; | |
5317 | } | |
5318 | } | |
5319 | else if (d == DECL_LEN) | |
5320 | { | |
5321 | if (!gfc_notify_std (GFC_STD_F2003, "LEN " | |
5322 | "attribute at %C in a TYPE definition")) | |
5323 | { | |
5324 | m = MATCH_ERROR; | |
5325 | goto cleanup; | |
5326 | } | |
5327 | if (current_ts.type != BT_INTEGER) | |
5328 | { | |
5329 | gfc_error ("Component with LEN attribute at %C must be " | |
5330 | "INTEGER"); | |
5331 | m = MATCH_ERROR; | |
5332 | goto cleanup; | |
5333 | } | |
5334 | if (current_ts.kind != gfc_default_integer_kind) | |
5335 | { | |
5336 | gfc_error ("Component with LEN attribute at %C must be " | |
5337 | "default integer kind (%d)", | |
5338 | gfc_default_integer_kind); | |
5339 | m = MATCH_ERROR; | |
5340 | goto cleanup; | |
5341 | } | |
5342 | } | |
1a9745d2 | 5343 | else |
2294b616 | 5344 | { |
5345 | gfc_error ("Attribute at %L is not allowed in a TYPE definition", | |
e14bee04 | 5346 | &seen_at[d]); |
2294b616 | 5347 | m = MATCH_ERROR; |
5348 | goto cleanup; | |
5349 | } | |
4ee9c684 | 5350 | } |
5351 | ||
ea13b9b7 | 5352 | if ((d == DECL_PRIVATE || d == DECL_PUBLIC) |
1a9745d2 | 5353 | && gfc_current_state () != COMP_MODULE) |
ea13b9b7 | 5354 | { |
5355 | if (d == DECL_PRIVATE) | |
5356 | attr = "PRIVATE"; | |
5357 | else | |
5358 | attr = "PUBLIC"; | |
e14bee04 | 5359 | if (gfc_current_state () == COMP_DERIVED |
5360 | && gfc_state_stack->previous | |
5361 | && gfc_state_stack->previous->state == COMP_MODULE) | |
5362 | { | |
60e19868 | 5363 | if (!gfc_notify_std (GFC_STD_F2003, "Attribute %s " |
76e207a9 | 5364 | "at %L in a TYPE definition", attr, |
60e19868 | 5365 | &seen_at[d])) |
e14bee04 | 5366 | { |
5367 | m = MATCH_ERROR; | |
5368 | goto cleanup; | |
5369 | } | |
5370 | } | |
5371 | else | |
5372 | { | |
5373 | gfc_error ("%s attribute at %L is not allowed outside of the " | |
5374 | "specification part of a module", attr, &seen_at[d]); | |
5375 | m = MATCH_ERROR; | |
5376 | goto cleanup; | |
5377 | } | |
ea13b9b7 | 5378 | } |
5379 | ||
9d958d5b | 5380 | if (gfc_current_state () != COMP_DERIVED |
5381 | && (d == DECL_KIND || d == DECL_LEN)) | |
5382 | { | |
5383 | gfc_error ("Attribute at %L is not allowed outside a TYPE " | |
5384 | "definition", &seen_at[d]); | |
5385 | m = MATCH_ERROR; | |
5386 | goto cleanup; | |
5387 | } | |
5388 | ||
4ee9c684 | 5389 | switch (d) |
5390 | { | |
5391 | case DECL_ALLOCATABLE: | |
5392 | t = gfc_add_allocatable (¤t_attr, &seen_at[d]); | |
5393 | break; | |
5394 | ||
738928be | 5395 | case DECL_ASYNCHRONOUS: |
60e19868 | 5396 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS attribute at %C")) |
5397 | t = false; | |
738928be | 5398 | else |
5399 | t = gfc_add_asynchronous (¤t_attr, NULL, &seen_at[d]); | |
5400 | break; | |
5401 | ||
aff518b0 | 5402 | case DECL_CODIMENSION: |
5403 | t = gfc_add_codimension (¤t_attr, NULL, &seen_at[d]); | |
5404 | break; | |
5405 | ||
b3c3927c | 5406 | case DECL_CONTIGUOUS: |
60e19868 | 5407 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS attribute at %C")) |
5408 | t = false; | |
b3c3927c | 5409 | else |
5410 | t = gfc_add_contiguous (¤t_attr, NULL, &seen_at[d]); | |
5411 | break; | |
5412 | ||
4ee9c684 | 5413 | case DECL_DIMENSION: |
950683ed | 5414 | t = gfc_add_dimension (¤t_attr, NULL, &seen_at[d]); |
4ee9c684 | 5415 | break; |
5416 | ||
5417 | case DECL_EXTERNAL: | |
5418 | t = gfc_add_external (¤t_attr, &seen_at[d]); | |
5419 | break; | |
5420 | ||
5421 | case DECL_IN: | |
5422 | t = gfc_add_intent (¤t_attr, INTENT_IN, &seen_at[d]); | |
5423 | break; | |
5424 | ||
5425 | case DECL_OUT: | |
5426 | t = gfc_add_intent (¤t_attr, INTENT_OUT, &seen_at[d]); | |
5427 | break; | |
5428 | ||
5429 | case DECL_INOUT: | |
5430 | t = gfc_add_intent (¤t_attr, INTENT_INOUT, &seen_at[d]); | |
5431 | break; | |
5432 | ||
5433 | case DECL_INTRINSIC: | |
5434 | t = gfc_add_intrinsic (¤t_attr, &seen_at[d]); | |
5435 | break; | |
5436 | ||
5437 | case DECL_OPTIONAL: | |
5438 | t = gfc_add_optional (¤t_attr, &seen_at[d]); | |
5439 | break; | |
5440 | ||
9d958d5b | 5441 | case DECL_KIND: |
5442 | t = gfc_add_kind (¤t_attr, &seen_at[d]); | |
5443 | break; | |
5444 | ||
5445 | case DECL_LEN: | |
5446 | t = gfc_add_len (¤t_attr, &seen_at[d]); | |
5447 | break; | |
5448 | ||
4ee9c684 | 5449 | case DECL_PARAMETER: |
950683ed | 5450 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, &seen_at[d]); |
4ee9c684 | 5451 | break; |
5452 | ||
5453 | case DECL_POINTER: | |
5454 | t = gfc_add_pointer (¤t_attr, &seen_at[d]); | |
5455 | break; | |
5456 | ||
3ea52af3 | 5457 | case DECL_PROTECTED: |
8371b2e9 | 5458 | if (gfc_current_state () != COMP_MODULE |
5459 | || (gfc_current_ns->proc_name | |
5460 | && gfc_current_ns->proc_name->attr.flavor != FL_MODULE)) | |
3ea52af3 | 5461 | { |
5462 | gfc_error ("PROTECTED at %C only allowed in specification " | |
5463 | "part of a module"); | |
60e19868 | 5464 | t = false; |
3ea52af3 | 5465 | break; |
5466 | } | |
5467 | ||
60e19868 | 5468 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED attribute at %C")) |
5469 | t = false; | |
3ea52af3 | 5470 | else |
5471 | t = gfc_add_protected (¤t_attr, NULL, &seen_at[d]); | |
5472 | break; | |
5473 | ||
4ee9c684 | 5474 | case DECL_PRIVATE: |
950683ed | 5475 | t = gfc_add_access (¤t_attr, ACCESS_PRIVATE, NULL, |
5476 | &seen_at[d]); | |
4ee9c684 | 5477 | break; |
5478 | ||
5479 | case DECL_PUBLIC: | |
950683ed | 5480 | t = gfc_add_access (¤t_attr, ACCESS_PUBLIC, NULL, |
5481 | &seen_at[d]); | |
4ee9c684 | 5482 | break; |
5483 | ||
8e652fcf | 5484 | case DECL_STATIC: |
4ee9c684 | 5485 | case DECL_SAVE: |
23d075f4 | 5486 | t = gfc_add_save (¤t_attr, SAVE_EXPLICIT, NULL, &seen_at[d]); |
4ee9c684 | 5487 | break; |
5488 | ||
8e652fcf | 5489 | case DECL_AUTOMATIC: |
5490 | t = gfc_add_automatic (¤t_attr, NULL, &seen_at[d]); | |
5491 | break; | |
5492 | ||
4ee9c684 | 5493 | case DECL_TARGET: |
5494 | t = gfc_add_target (¤t_attr, &seen_at[d]); | |
5495 | break; | |
5496 | ||
c5d33754 | 5497 | case DECL_IS_BIND_C: |
5498 | t = gfc_add_is_bind_c(¤t_attr, NULL, &seen_at[d], 0); | |
5499 | break; | |
8db94b3b | 5500 | |
8f6339b6 | 5501 | case DECL_VALUE: |
60e19868 | 5502 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE attribute at %C")) |
5503 | t = false; | |
8f6339b6 | 5504 | else |
5505 | t = gfc_add_value (¤t_attr, NULL, &seen_at[d]); | |
5506 | break; | |
5507 | ||
ef814c81 | 5508 | case DECL_VOLATILE: |
60e19868 | 5509 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE attribute at %C")) |
5510 | t = false; | |
ef814c81 | 5511 | else |
5512 | t = gfc_add_volatile (¤t_attr, NULL, &seen_at[d]); | |
5513 | break; | |
5514 | ||
4ee9c684 | 5515 | default: |
5516 | gfc_internal_error ("match_attr_spec(): Bad attribute"); | |
5517 | } | |
5518 | ||
60e19868 | 5519 | if (!t) |
4ee9c684 | 5520 | { |
5521 | m = MATCH_ERROR; | |
5522 | goto cleanup; | |
5523 | } | |
5524 | } | |
5525 | ||
c25834c9 | 5526 | /* Since Fortran 2008 module variables implicitly have the SAVE attribute. */ |
4b8eb6ca | 5527 | if ((gfc_current_state () == COMP_MODULE |
5528 | || gfc_current_state () == COMP_SUBMODULE) | |
5529 | && !current_attr.save | |
c25834c9 | 5530 | && (gfc_option.allow_std & GFC_STD_F2008) != 0) |
23d075f4 | 5531 | current_attr.save = SAVE_IMPLICIT; |
5532 | ||
4ee9c684 | 5533 | colon_seen = 1; |
5534 | return MATCH_YES; | |
5535 | ||
5536 | cleanup: | |
cbb9e6aa | 5537 | gfc_current_locus = start; |
4ee9c684 | 5538 | gfc_free_array_spec (current_as); |
5539 | current_as = NULL; | |
8ef2cf76 | 5540 | attr_seen = 0; |
4ee9c684 | 5541 | return m; |
5542 | } | |
5543 | ||
5544 | ||
c5d33754 | 5545 | /* Set the binding label, dest_label, either with the binding label |
5546 | stored in the given gfc_typespec, ts, or if none was provided, it | |
5547 | will be the symbol name in all lower case, as required by the draft | |
5548 | (J3/04-007, section 15.4.1). If a binding label was given and | |
5549 | there is more than one argument (num_idents), it is an error. */ | |
5550 | ||
60e19868 | 5551 | static bool |
8db94b3b | 5552 | set_binding_label (const char **dest_label, const char *sym_name, |
1d8a57d8 | 5553 | int num_idents) |
c5d33754 | 5554 | { |
825718f9 | 5555 | if (num_idents > 1 && has_name_equals) |
c5d33754 | 5556 | { |
825718f9 | 5557 | gfc_error ("Multiple identifiers provided with " |
5558 | "single NAME= specifier at %C"); | |
60e19868 | 5559 | return false; |
825718f9 | 5560 | } |
c5d33754 | 5561 | |
7b2060ba | 5562 | if (curr_binding_label) |
df084314 | 5563 | /* Binding label given; store in temp holder till have sym. */ |
7b2060ba | 5564 | *dest_label = curr_binding_label; |
c5d33754 | 5565 | else |
5566 | { | |
5567 | /* No binding label given, and the NAME= specifier did not exist, | |
5568 | which means there was no NAME="". */ | |
5569 | if (sym_name != NULL && has_name_equals == 0) | |
7b2060ba | 5570 | *dest_label = IDENTIFIER_POINTER (get_identifier (sym_name)); |
c5d33754 | 5571 | } |
8db94b3b | 5572 | |
60e19868 | 5573 | return true; |
c5d33754 | 5574 | } |
5575 | ||
5576 | ||
5577 | /* Set the status of the given common block as being BIND(C) or not, | |
5578 | depending on the given parameter, is_bind_c. */ | |
5579 | ||
5580 | void | |
5581 | set_com_block_bind_c (gfc_common_head *com_block, int is_bind_c) | |
5582 | { | |
5583 | com_block->is_bind_c = is_bind_c; | |
5584 | return; | |
5585 | } | |
5586 | ||
5587 | ||
5588 | /* Verify that the given gfc_typespec is for a C interoperable type. */ | |
5589 | ||
60e19868 | 5590 | bool |
2564c57a | 5591 | gfc_verify_c_interop (gfc_typespec *ts) |
c5d33754 | 5592 | { |
eeebe20b | 5593 | if (ts->type == BT_DERIVED && ts->u.derived != NULL) |
5f9b1308 | 5594 | return (ts->u.derived->ts.is_c_interop || ts->u.derived->attr.is_bind_c) |
60e19868 | 5595 | ? true : false; |
2564c57a | 5596 | else if (ts->type == BT_CLASS) |
60e19868 | 5597 | return false; |
8c2d8d6d | 5598 | else if (ts->is_c_interop != 1 && ts->type != BT_ASSUMED) |
60e19868 | 5599 | return false; |
8c2d8d6d | 5600 | |
60e19868 | 5601 | return true; |
c5d33754 | 5602 | } |
5603 | ||
5604 | ||
5605 | /* Verify that the variables of a given common block, which has been | |
5606 | defined with the attribute specifier bind(c), to be of a C | |
5607 | interoperable type. Errors will be reported here, if | |
5608 | encountered. */ | |
5609 | ||
60e19868 | 5610 | bool |
c5d33754 | 5611 | verify_com_block_vars_c_interop (gfc_common_head *com_block) |
5612 | { | |
5613 | gfc_symbol *curr_sym = NULL; | |
60e19868 | 5614 | bool retval = true; |
c5d33754 | 5615 | |
5616 | curr_sym = com_block->head; | |
8db94b3b | 5617 | |
c5d33754 | 5618 | /* Make sure we have at least one symbol. */ |
5619 | if (curr_sym == NULL) | |
5620 | return retval; | |
5621 | ||
5622 | /* Here we know we have a symbol, so we'll execute this loop | |
5623 | at least once. */ | |
5624 | do | |
5625 | { | |
5626 | /* The second to last param, 1, says this is in a common block. */ | |
5627 | retval = verify_bind_c_sym (curr_sym, &(curr_sym->ts), 1, com_block); | |
5628 | curr_sym = curr_sym->common_next; | |
8db94b3b | 5629 | } while (curr_sym != NULL); |
c5d33754 | 5630 | |
5631 | return retval; | |
5632 | } | |
5633 | ||
5634 | ||
5635 | /* Verify that a given BIND(C) symbol is C interoperable. If it is not, | |
5636 | an appropriate error message is reported. */ | |
5637 | ||
60e19868 | 5638 | bool |
c5d33754 | 5639 | verify_bind_c_sym (gfc_symbol *tmp_sym, gfc_typespec *ts, |
5640 | int is_in_common, gfc_common_head *com_block) | |
5641 | { | |
1f2ab120 | 5642 | bool bind_c_function = false; |
60e19868 | 5643 | bool retval = true; |
4f7bb9ec | 5644 | |
1f2ab120 | 5645 | if (tmp_sym->attr.function && tmp_sym->attr.is_bind_c) |
5646 | bind_c_function = true; | |
5647 | ||
4f7bb9ec | 5648 | if (tmp_sym->attr.function && tmp_sym->result != NULL) |
5649 | { | |
5650 | tmp_sym = tmp_sym->result; | |
5651 | /* Make sure it wasn't an implicitly typed result. */ | |
bf79c656 | 5652 | if (tmp_sym->attr.implicit_type && warn_c_binding_type) |
4f7bb9ec | 5653 | { |
4166acc7 | 5654 | gfc_warning (OPT_Wc_binding_type, |
5655 | "Implicitly declared BIND(C) function %qs at " | |
4f7bb9ec | 5656 | "%L may not be C interoperable", tmp_sym->name, |
5657 | &tmp_sym->declared_at); | |
5658 | tmp_sym->ts.f90_type = tmp_sym->ts.type; | |
5659 | /* Mark it as C interoperable to prevent duplicate warnings. */ | |
5660 | tmp_sym->ts.is_c_interop = 1; | |
5661 | tmp_sym->attr.is_c_interop = 1; | |
5662 | } | |
5663 | } | |
1f2ab120 | 5664 | |
c5d33754 | 5665 | /* Here, we know we have the bind(c) attribute, so if we have |
5666 | enough type info, then verify that it's a C interop kind. | |
5667 | The info could be in the symbol already, or possibly still in | |
5668 | the given ts (current_ts), so look in both. */ | |
8db94b3b | 5669 | if (tmp_sym->ts.type != BT_UNKNOWN || ts->type != BT_UNKNOWN) |
c5d33754 | 5670 | { |
60e19868 | 5671 | if (!gfc_verify_c_interop (&(tmp_sym->ts))) |
c5d33754 | 5672 | { |
5673 | /* See if we're dealing with a sym in a common block or not. */ | |
bf79c656 | 5674 | if (is_in_common == 1 && warn_c_binding_type) |
c5d33754 | 5675 | { |
4166acc7 | 5676 | gfc_warning (OPT_Wc_binding_type, |
5677 | "Variable %qs in common block %qs at %L " | |
c5d33754 | 5678 | "may not be a C interoperable " |
4166acc7 | 5679 | "kind though common block %qs is BIND(C)", |
c5d33754 | 5680 | tmp_sym->name, com_block->name, |
5681 | &(tmp_sym->declared_at), com_block->name); | |
5682 | } | |
5683 | else | |
5684 | { | |
5685 | if (tmp_sym->ts.type == BT_DERIVED || ts->type == BT_DERIVED) | |
716da296 | 5686 | gfc_error ("Type declaration %qs at %L is not C " |
c5d33754 | 5687 | "interoperable but it is BIND(C)", |
5688 | tmp_sym->name, &(tmp_sym->declared_at)); | |
bf79c656 | 5689 | else if (warn_c_binding_type) |
4166acc7 | 5690 | gfc_warning (OPT_Wc_binding_type, "Variable %qs at %L " |
c5d33754 | 5691 | "may not be a C interoperable " |
716da296 | 5692 | "kind but it is BIND(C)", |
c5d33754 | 5693 | tmp_sym->name, &(tmp_sym->declared_at)); |
5694 | } | |
5695 | } | |
8db94b3b | 5696 | |
c5d33754 | 5697 | /* Variables declared w/in a common block can't be bind(c) |
5698 | since there's no way for C to see these variables, so there's | |
5699 | semantically no reason for the attribute. */ | |
5700 | if (is_in_common == 1 && tmp_sym->attr.is_bind_c == 1) | |
5701 | { | |
716da296 | 5702 | gfc_error ("Variable %qs in common block %qs at " |
c5d33754 | 5703 | "%L cannot be declared with BIND(C) " |
5704 | "since it is not a global", | |
5705 | tmp_sym->name, com_block->name, | |
5706 | &(tmp_sym->declared_at)); | |
60e19868 | 5707 | retval = false; |
c5d33754 | 5708 | } |
8db94b3b | 5709 | |
f4d3c071 | 5710 | /* Scalar variables that are bind(c) cannot have the pointer |
c5d33754 | 5711 | or allocatable attributes. */ |
5712 | if (tmp_sym->attr.is_bind_c == 1) | |
5713 | { | |
5714 | if (tmp_sym->attr.pointer == 1) | |
5715 | { | |
716da296 | 5716 | gfc_error ("Variable %qs at %L cannot have both the " |
c5d33754 | 5717 | "POINTER and BIND(C) attributes", |
5718 | tmp_sym->name, &(tmp_sym->declared_at)); | |
60e19868 | 5719 | retval = false; |
c5d33754 | 5720 | } |
5721 | ||
5722 | if (tmp_sym->attr.allocatable == 1) | |
5723 | { | |
716da296 | 5724 | gfc_error ("Variable %qs at %L cannot have both the " |
c5d33754 | 5725 | "ALLOCATABLE and BIND(C) attributes", |
5726 | tmp_sym->name, &(tmp_sym->declared_at)); | |
60e19868 | 5727 | retval = false; |
c5d33754 | 5728 | } |
5729 | ||
1f2ab120 | 5730 | } |
5731 | ||
5732 | /* If it is a BIND(C) function, make sure the return value is a | |
5733 | scalar value. The previous tests in this function made sure | |
5734 | the type is interoperable. */ | |
5735 | if (bind_c_function && tmp_sym->as != NULL) | |
716da296 | 5736 | gfc_error ("Return type of BIND(C) function %qs at %L cannot " |
1f2ab120 | 5737 | "be an array", tmp_sym->name, &(tmp_sym->declared_at)); |
5738 | ||
f4d3c071 | 5739 | /* BIND(C) functions cannot return a character string. */ |
1f2ab120 | 5740 | if (bind_c_function && tmp_sym->ts.type == BT_CHARACTER) |
eeebe20b | 5741 | if (tmp_sym->ts.u.cl == NULL || tmp_sym->ts.u.cl->length == NULL |
5742 | || tmp_sym->ts.u.cl->length->expr_type != EXPR_CONSTANT | |
5743 | || mpz_cmp_si (tmp_sym->ts.u.cl->length->value.integer, 1) != 0) | |
f6c28593 | 5744 | gfc_error ("Return type of BIND(C) function %qs of character " |
c014d57d | 5745 | "type at %L must have length 1", tmp_sym->name, |
c5d33754 | 5746 | &(tmp_sym->declared_at)); |
c5d33754 | 5747 | } |
5748 | ||
5749 | /* See if the symbol has been marked as private. If it has, make sure | |
5750 | there is no binding label and warn the user if there is one. */ | |
5751 | if (tmp_sym->attr.access == ACCESS_PRIVATE | |
7b2060ba | 5752 | && tmp_sym->binding_label) |
c5d33754 | 5753 | /* Use gfc_warning_now because we won't say that the symbol fails |
5754 | just because of this. */ | |
6f521718 | 5755 | gfc_warning_now (0, "Symbol %qs at %L is marked PRIVATE but has been " |
bf79c656 | 5756 | "given the binding label %qs", tmp_sym->name, |
c5d33754 | 5757 | &(tmp_sym->declared_at), tmp_sym->binding_label); |
5758 | ||
5759 | return retval; | |
5760 | } | |
5761 | ||
5762 | ||
5763 | /* Set the appropriate fields for a symbol that's been declared as | |
5764 | BIND(C) (the is_bind_c flag and the binding label), and verify that | |
5765 | the type is C interoperable. Errors are reported by the functions | |
5766 | used to set/test these fields. */ | |
5767 | ||
60e19868 | 5768 | bool |
c5d33754 | 5769 | set_verify_bind_c_sym (gfc_symbol *tmp_sym, int num_idents) |
5770 | { | |
60e19868 | 5771 | bool retval = true; |
8db94b3b | 5772 | |
c5d33754 | 5773 | /* TODO: Do we need to make sure the vars aren't marked private? */ |
5774 | ||
5775 | /* Set the is_bind_c bit in symbol_attribute. */ | |
5776 | gfc_add_is_bind_c (&(tmp_sym->attr), tmp_sym->name, &gfc_current_locus, 0); | |
5777 | ||
60e19868 | 5778 | if (!set_binding_label (&tmp_sym->binding_label, tmp_sym->name, num_idents)) |
5779 | return false; | |
c5d33754 | 5780 | |
5781 | return retval; | |
5782 | } | |
5783 | ||
5784 | ||
5785 | /* Set the fields marking the given common block as BIND(C), including | |
5786 | a binding label, and report any errors encountered. */ | |
5787 | ||
60e19868 | 5788 | bool |
c5d33754 | 5789 | set_verify_bind_c_com_block (gfc_common_head *com_block, int num_idents) |
5790 | { | |
60e19868 | 5791 | bool retval = true; |
8db94b3b | 5792 | |
c5d33754 | 5793 | /* destLabel, common name, typespec (which may have binding label). */ |
76e207a9 | 5794 | if (!set_binding_label (&com_block->binding_label, com_block->name, |
60e19868 | 5795 | num_idents)) |
5796 | return false; | |
c5d33754 | 5797 | |
5798 | /* Set the given common block (com_block) to being bind(c) (1). */ | |
5799 | set_com_block_bind_c (com_block, 1); | |
5800 | ||
5801 | return retval; | |
5802 | } | |
5803 | ||
5804 | ||
5805 | /* Retrieve the list of one or more identifiers that the given bind(c) | |
5806 | attribute applies to. */ | |
5807 | ||
60e19868 | 5808 | bool |
c5d33754 | 5809 | get_bind_c_idents (void) |
5810 | { | |
5811 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5812 | int num_idents = 0; | |
5813 | gfc_symbol *tmp_sym = NULL; | |
5814 | match found_id; | |
5815 | gfc_common_head *com_block = NULL; | |
8db94b3b | 5816 | |
c5d33754 | 5817 | if (gfc_match_name (name) == MATCH_YES) |
5818 | { | |
5819 | found_id = MATCH_YES; | |
5820 | gfc_get_ha_symbol (name, &tmp_sym); | |
5821 | } | |
5822 | else if (match_common_name (name) == MATCH_YES) | |
5823 | { | |
5824 | found_id = MATCH_YES; | |
5825 | com_block = gfc_get_common (name, 0); | |
5826 | } | |
5827 | else | |
5828 | { | |
5829 | gfc_error ("Need either entity or common block name for " | |
5830 | "attribute specification statement at %C"); | |
60e19868 | 5831 | return false; |
c5d33754 | 5832 | } |
8db94b3b | 5833 | |
c5d33754 | 5834 | /* Save the current identifier and look for more. */ |
5835 | do | |
5836 | { | |
5837 | /* Increment the number of identifiers found for this spec stmt. */ | |
5838 | num_idents++; | |
5839 | ||
5840 | /* Make sure we have a sym or com block, and verify that it can | |
5841 | be bind(c). Set the appropriate field(s) and look for more | |
5842 | identifiers. */ | |
8db94b3b | 5843 | if (tmp_sym != NULL || com_block != NULL) |
c5d33754 | 5844 | { |
5845 | if (tmp_sym != NULL) | |
5846 | { | |
60e19868 | 5847 | if (!set_verify_bind_c_sym (tmp_sym, num_idents)) |
5848 | return false; | |
c5d33754 | 5849 | } |
5850 | else | |
5851 | { | |
60e19868 | 5852 | if (!set_verify_bind_c_com_block (com_block, num_idents)) |
5853 | return false; | |
c5d33754 | 5854 | } |
8db94b3b | 5855 | |
c5d33754 | 5856 | /* Look to see if we have another identifier. */ |
5857 | tmp_sym = NULL; | |
5858 | if (gfc_match_eos () == MATCH_YES) | |
5859 | found_id = MATCH_NO; | |
5860 | else if (gfc_match_char (',') != MATCH_YES) | |
5861 | found_id = MATCH_NO; | |
5862 | else if (gfc_match_name (name) == MATCH_YES) | |
5863 | { | |
5864 | found_id = MATCH_YES; | |
5865 | gfc_get_ha_symbol (name, &tmp_sym); | |
5866 | } | |
5867 | else if (match_common_name (name) == MATCH_YES) | |
5868 | { | |
5869 | found_id = MATCH_YES; | |
5870 | com_block = gfc_get_common (name, 0); | |
5871 | } | |
5872 | else | |
5873 | { | |
5874 | gfc_error ("Missing entity or common block name for " | |
5875 | "attribute specification statement at %C"); | |
60e19868 | 5876 | return false; |
c5d33754 | 5877 | } |
5878 | } | |
5879 | else | |
5880 | { | |
5881 | gfc_internal_error ("Missing symbol"); | |
5882 | } | |
5883 | } while (found_id == MATCH_YES); | |
5884 | ||
5885 | /* if we get here we were successful */ | |
60e19868 | 5886 | return true; |
c5d33754 | 5887 | } |
5888 | ||
5889 | ||
5890 | /* Try and match a BIND(C) attribute specification statement. */ | |
8db94b3b | 5891 | |
c5d33754 | 5892 | match |
5893 | gfc_match_bind_c_stmt (void) | |
5894 | { | |
5895 | match found_match = MATCH_NO; | |
5896 | gfc_typespec *ts; | |
5897 | ||
5898 | ts = ¤t_ts; | |
8db94b3b | 5899 | |
c5d33754 | 5900 | /* This may not be necessary. */ |
5901 | gfc_clear_ts (ts); | |
5902 | /* Clear the temporary binding label holder. */ | |
7b2060ba | 5903 | curr_binding_label = NULL; |
c5d33754 | 5904 | |
5905 | /* Look for the bind(c). */ | |
75ae7f6c | 5906 | found_match = gfc_match_bind_c (NULL, true); |
c5d33754 | 5907 | |
5908 | if (found_match == MATCH_YES) | |
5909 | { | |
7a914593 | 5910 | if (!gfc_notify_std (GFC_STD_F2003, "BIND(C) statement at %C")) |
5911 | return MATCH_ERROR; | |
5912 | ||
c5d33754 | 5913 | /* Look for the :: now, but it is not required. */ |
5914 | gfc_match (" :: "); | |
5915 | ||
5916 | /* Get the identifier(s) that needs to be updated. This may need to | |
5917 | change to hand the flag(s) for the attr specified so all identifiers | |
5918 | found can have all appropriate parts updated (assuming that the same | |
5919 | spec stmt can have multiple attrs, such as both bind(c) and | |
5920 | allocatable...). */ | |
60e19868 | 5921 | if (!get_bind_c_idents ()) |
c5d33754 | 5922 | /* Error message should have printed already. */ |
5923 | return MATCH_ERROR; | |
5924 | } | |
5925 | ||
5926 | return found_match; | |
5927 | } | |
5928 | ||
5929 | ||
4ee9c684 | 5930 | /* Match a data declaration statement. */ |
5931 | ||
5932 | match | |
5933 | gfc_match_data_decl (void) | |
5934 | { | |
5935 | gfc_symbol *sym; | |
5936 | match m; | |
3923b69f | 5937 | int elem; |
4ee9c684 | 5938 | |
9d958d5b | 5939 | type_param_spec_list = NULL; |
5940 | decl_type_param_list = NULL; | |
5941 | ||
c5d33754 | 5942 | num_idents_on_line = 0; |
8db94b3b | 5943 | |
e8152f13 | 5944 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
4ee9c684 | 5945 | if (m != MATCH_YES) |
5946 | return m; | |
5947 | ||
b3704193 | 5948 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
d7cd448a | 5949 | && !gfc_comp_struct (gfc_current_state ())) |
4ee9c684 | 5950 | { |
eeebe20b | 5951 | sym = gfc_use_derived (current_ts.u.derived); |
4ee9c684 | 5952 | |
5953 | if (sym == NULL) | |
5954 | { | |
5955 | m = MATCH_ERROR; | |
5956 | goto cleanup; | |
5957 | } | |
5958 | ||
eeebe20b | 5959 | current_ts.u.derived = sym; |
4ee9c684 | 5960 | } |
5961 | ||
5962 | m = match_attr_spec (); | |
5963 | if (m == MATCH_ERROR) | |
5964 | { | |
5965 | m = MATCH_NO; | |
5966 | goto cleanup; | |
5967 | } | |
5968 | ||
a90fe829 | 5969 | if (current_ts.type == BT_CLASS |
5970 | && current_ts.u.derived->attr.unlimited_polymorphic) | |
5971 | goto ok; | |
5972 | ||
b3704193 | 5973 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
5974 | && current_ts.u.derived->components == NULL | |
eeebe20b | 5975 | && !current_ts.u.derived->attr.zero_comp) |
4ee9c684 | 5976 | { |
5977 | ||
d7cd448a | 5978 | if (current_attr.pointer && gfc_comp_struct (gfc_current_state ())) |
4ee9c684 | 5979 | goto ok; |
5980 | ||
2fbfb5cf | 5981 | if (current_attr.allocatable && gfc_current_state () == COMP_DERIVED) |
dd7553fe | 5982 | goto ok; |
5983 | ||
eeebe20b | 5984 | gfc_find_symbol (current_ts.u.derived->name, |
d67dd34f | 5985 | current_ts.u.derived->ns, 1, &sym); |
4ee9c684 | 5986 | |
40cf8078 | 5987 | /* Any symbol that we find had better be a type definition |
d7cd448a | 5988 | which has its components defined, or be a structure definition |
5989 | actively being parsed. */ | |
5990 | if (sym != NULL && gfc_fl_struct (sym->attr.flavor) | |
eeebe20b | 5991 | && (current_ts.u.derived->components != NULL |
d7cd448a | 5992 | || current_ts.u.derived->attr.zero_comp |
5993 | || current_ts.u.derived == gfc_new_block)) | |
4ee9c684 | 5994 | goto ok; |
5995 | ||
a1e76cd9 | 5996 | gfc_error ("Derived type at %C has not been previously defined " |
5997 | "and so cannot appear in a derived type definition"); | |
5998 | m = MATCH_ERROR; | |
5999 | goto cleanup; | |
4ee9c684 | 6000 | } |
6001 | ||
6002 | ok: | |
6003 | /* If we have an old-style character declaration, and no new-style | |
6004 | attribute specifications, then there a comma is optional between | |
6005 | the type specification and the variable list. */ | |
6006 | if (m == MATCH_NO && current_ts.type == BT_CHARACTER && old_char_selector) | |
6007 | gfc_match_char (','); | |
6008 | ||
3923b69f | 6009 | /* Give the types/attributes to symbols that follow. Give the element |
6010 | a number so that repeat character length expressions can be copied. */ | |
6011 | elem = 1; | |
4ee9c684 | 6012 | for (;;) |
6013 | { | |
c5d33754 | 6014 | num_idents_on_line++; |
3923b69f | 6015 | m = variable_decl (elem++); |
4ee9c684 | 6016 | if (m == MATCH_ERROR) |
6017 | goto cleanup; | |
6018 | if (m == MATCH_NO) | |
6019 | break; | |
6020 | ||
6021 | if (gfc_match_eos () == MATCH_YES) | |
6022 | goto cleanup; | |
6023 | if (gfc_match_char (',') != MATCH_YES) | |
6024 | break; | |
6025 | } | |
6026 | ||
389e3a5e | 6027 | if (!gfc_error_flag_test ()) |
c717a688 | 6028 | { |
6029 | /* An anonymous structure declaration is unambiguous; if we matched one | |
6030 | according to gfc_match_structure_decl, we need to return MATCH_YES | |
6031 | here to avoid confusing the remaining matchers, even if there was an | |
6032 | error during variable_decl. We must flush any such errors. Note this | |
6033 | causes the parser to gracefully continue parsing the remaining input | |
6034 | as a structure body, which likely follows. */ | |
6035 | if (current_ts.type == BT_DERIVED && current_ts.u.derived | |
6036 | && gfc_fl_struct (current_ts.u.derived->attr.flavor)) | |
6037 | { | |
6038 | gfc_error_now ("Syntax error in anonymous structure declaration" | |
6039 | " at %C"); | |
6040 | /* Skip the bad variable_decl and line up for the start of the | |
6041 | structure body. */ | |
6042 | gfc_error_recovery (); | |
6043 | m = MATCH_YES; | |
6044 | goto cleanup; | |
6045 | } | |
6046 | ||
6047 | gfc_error ("Syntax error in data declaration at %C"); | |
6048 | } | |
6049 | ||
4ee9c684 | 6050 | m = MATCH_ERROR; |
6051 | ||
af29c1f0 | 6052 | gfc_free_data_all (gfc_current_ns); |
6053 | ||
4ee9c684 | 6054 | cleanup: |
9d958d5b | 6055 | if (saved_kind_expr) |
6056 | gfc_free_expr (saved_kind_expr); | |
6057 | if (type_param_spec_list) | |
6058 | gfc_free_actual_arglist (type_param_spec_list); | |
6059 | if (decl_type_param_list) | |
6060 | gfc_free_actual_arglist (decl_type_param_list); | |
6061 | saved_kind_expr = NULL; | |
4ee9c684 | 6062 | gfc_free_array_spec (current_as); |
6063 | current_as = NULL; | |
6064 | return m; | |
6065 | } | |
6066 | ||
6067 | ||
6068 | /* Match a prefix associated with a function or subroutine | |
6069 | declaration. If the typespec pointer is nonnull, then a typespec | |
6070 | can be matched. Note that if nothing matches, MATCH_YES is | |
6071 | returned (the null string was matched). */ | |
6072 | ||
077932f9 | 6073 | match |
6074 | gfc_match_prefix (gfc_typespec *ts) | |
4ee9c684 | 6075 | { |
5b11d932 | 6076 | bool seen_type; |
4e4ea00b | 6077 | bool seen_impure; |
6078 | bool found_prefix; | |
4ee9c684 | 6079 | |
6080 | gfc_clear_attr (¤t_attr); | |
4e4ea00b | 6081 | seen_type = false; |
6082 | seen_impure = false; | |
4ee9c684 | 6083 | |
d1645c7b | 6084 | gcc_assert (!gfc_matching_prefix); |
6085 | gfc_matching_prefix = true; | |
40de255b | 6086 | |
4e4ea00b | 6087 | do |
4ee9c684 | 6088 | { |
4e4ea00b | 6089 | found_prefix = false; |
4ee9c684 | 6090 | |
76e207a9 | 6091 | /* MODULE is a prefix like PURE, ELEMENTAL, etc., having a |
6092 | corresponding attribute seems natural and distinguishes these | |
6093 | procedures from procedure types of PROC_MODULE, which these are | |
6094 | as well. */ | |
6095 | if (gfc_match ("module% ") == MATCH_YES) | |
6096 | { | |
6097 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE prefix at %C")) | |
6098 | goto error; | |
6099 | ||
6100 | current_attr.module_procedure = 1; | |
6101 | found_prefix = true; | |
6102 | } | |
6103 | ||
4e4ea00b | 6104 | if (!seen_type && ts != NULL |
6105 | && gfc_match_decl_type_spec (ts, 0) == MATCH_YES | |
6106 | && gfc_match_space () == MATCH_YES) | |
6107 | { | |
4ee9c684 | 6108 | |
4e4ea00b | 6109 | seen_type = true; |
6110 | found_prefix = true; | |
6111 | } | |
6112 | ||
6113 | if (gfc_match ("elemental% ") == MATCH_YES) | |
6114 | { | |
60e19868 | 6115 | if (!gfc_add_elemental (¤t_attr, NULL)) |
4e4ea00b | 6116 | goto error; |
6117 | ||
6118 | found_prefix = true; | |
6119 | } | |
6120 | ||
6121 | if (gfc_match ("pure% ") == MATCH_YES) | |
6122 | { | |
60e19868 | 6123 | if (!gfc_add_pure (¤t_attr, NULL)) |
4e4ea00b | 6124 | goto error; |
6125 | ||
6126 | found_prefix = true; | |
6127 | } | |
4ee9c684 | 6128 | |
4e4ea00b | 6129 | if (gfc_match ("recursive% ") == MATCH_YES) |
6130 | { | |
60e19868 | 6131 | if (!gfc_add_recursive (¤t_attr, NULL)) |
4e4ea00b | 6132 | goto error; |
6133 | ||
6134 | found_prefix = true; | |
6135 | } | |
6136 | ||
6137 | /* IMPURE is a somewhat special case, as it needs not set an actual | |
6138 | attribute but rather only prevents ELEMENTAL routines from being | |
6139 | automatically PURE. */ | |
6140 | if (gfc_match ("impure% ") == MATCH_YES) | |
6141 | { | |
60e19868 | 6142 | if (!gfc_notify_std (GFC_STD_F2008, "IMPURE procedure at %C")) |
4e4ea00b | 6143 | goto error; |
6144 | ||
6145 | seen_impure = true; | |
6146 | found_prefix = true; | |
6147 | } | |
4ee9c684 | 6148 | } |
4e4ea00b | 6149 | while (found_prefix); |
4ee9c684 | 6150 | |
4e4ea00b | 6151 | /* IMPURE and PURE must not both appear, of course. */ |
6152 | if (seen_impure && current_attr.pure) | |
4ee9c684 | 6153 | { |
4e4ea00b | 6154 | gfc_error ("PURE and IMPURE must not appear both at %C"); |
6155 | goto error; | |
4ee9c684 | 6156 | } |
6157 | ||
4e4ea00b | 6158 | /* If IMPURE it not seen but the procedure is ELEMENTAL, mark it as PURE. */ |
6159 | if (!seen_impure && current_attr.elemental && !current_attr.pure) | |
4ee9c684 | 6160 | { |
60e19868 | 6161 | if (!gfc_add_pure (¤t_attr, NULL)) |
40de255b | 6162 | goto error; |
4ee9c684 | 6163 | } |
6164 | ||
6165 | /* At this point, the next item is not a prefix. */ | |
d1645c7b | 6166 | gcc_assert (gfc_matching_prefix); |
4b8eb6ca | 6167 | |
d1645c7b | 6168 | gfc_matching_prefix = false; |
4ee9c684 | 6169 | return MATCH_YES; |
40de255b | 6170 | |
6171 | error: | |
d1645c7b | 6172 | gcc_assert (gfc_matching_prefix); |
6173 | gfc_matching_prefix = false; | |
40de255b | 6174 | return MATCH_ERROR; |
4ee9c684 | 6175 | } |
6176 | ||
6177 | ||
077932f9 | 6178 | /* Copy attributes matched by gfc_match_prefix() to attributes on a symbol. */ |
4ee9c684 | 6179 | |
60e19868 | 6180 | static bool |
1a9745d2 | 6181 | copy_prefix (symbol_attribute *dest, locus *where) |
4ee9c684 | 6182 | { |
7d7125df | 6183 | if (dest->module_procedure) |
6184 | { | |
6185 | if (current_attr.elemental) | |
6186 | dest->elemental = 1; | |
6187 | ||
6188 | if (current_attr.pure) | |
6189 | dest->pure = 1; | |
6190 | ||
6191 | if (current_attr.recursive) | |
6192 | dest->recursive = 1; | |
6193 | ||
6194 | /* Module procedures are unusual in that the 'dest' is copied from | |
6195 | the interface declaration. However, this is an oportunity to | |
6196 | check that the submodule declaration is compliant with the | |
6197 | interface. */ | |
6198 | if (dest->elemental && !current_attr.elemental) | |
6199 | { | |
6200 | gfc_error ("ELEMENTAL prefix in MODULE PROCEDURE interface is " | |
6201 | "missing at %L", where); | |
6202 | return false; | |
6203 | } | |
6204 | ||
6205 | if (dest->pure && !current_attr.pure) | |
6206 | { | |
6207 | gfc_error ("PURE prefix in MODULE PROCEDURE interface is " | |
6208 | "missing at %L", where); | |
6209 | return false; | |
6210 | } | |
6211 | ||
6212 | if (dest->recursive && !current_attr.recursive) | |
6213 | { | |
6214 | gfc_error ("RECURSIVE prefix in MODULE PROCEDURE interface is " | |
6215 | "missing at %L", where); | |
6216 | return false; | |
6217 | } | |
6218 | ||
6219 | return true; | |
6220 | } | |
4ee9c684 | 6221 | |
60e19868 | 6222 | if (current_attr.elemental && !gfc_add_elemental (dest, where)) |
6223 | return false; | |
4ee9c684 | 6224 | |
7d7125df | 6225 | if (current_attr.pure && !gfc_add_pure (dest, where)) |
6226 | return false; | |
6227 | ||
60e19868 | 6228 | if (current_attr.recursive && !gfc_add_recursive (dest, where)) |
6229 | return false; | |
4ee9c684 | 6230 | |
60e19868 | 6231 | return true; |
4ee9c684 | 6232 | } |
6233 | ||
6234 | ||
9d958d5b | 6235 | /* Match a formal argument list or, if typeparam is true, a |
6236 | type_param_name_list. */ | |
4ee9c684 | 6237 | |
6238 | match | |
9d958d5b | 6239 | gfc_match_formal_arglist (gfc_symbol *progname, int st_flag, |
6240 | int null_flag, bool typeparam) | |
4ee9c684 | 6241 | { |
6242 | gfc_formal_arglist *head, *tail, *p, *q; | |
6243 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6244 | gfc_symbol *sym; | |
6245 | match m; | |
4b8eb6ca | 6246 | gfc_formal_arglist *formal = NULL; |
4ee9c684 | 6247 | |
6248 | head = tail = NULL; | |
6249 | ||
4b8eb6ca | 6250 | /* Keep the interface formal argument list and null it so that the |
6251 | matching for the new declaration can be done. The numbers and | |
6252 | names of the arguments are checked here. The interface formal | |
6253 | arguments are retained in formal_arglist and the characteristics | |
6254 | are compared in resolve.c(resolve_fl_procedure). See the remark | |
6255 | in get_proc_name about the eventual need to copy the formal_arglist | |
6256 | and populate the formal namespace of the interface symbol. */ | |
6257 | if (progname->attr.module_procedure | |
6258 | && progname->attr.host_assoc) | |
6259 | { | |
6260 | formal = progname->formal; | |
6261 | progname->formal = NULL; | |
6262 | } | |
6263 | ||
4ee9c684 | 6264 | if (gfc_match_char ('(') != MATCH_YES) |
6265 | { | |
6266 | if (null_flag) | |
6267 | goto ok; | |
6268 | return MATCH_NO; | |
6269 | } | |
6270 | ||
6271 | if (gfc_match_char (')') == MATCH_YES) | |
6272 | goto ok; | |
6273 | ||
6274 | for (;;) | |
6275 | { | |
6276 | if (gfc_match_char ('*') == MATCH_YES) | |
a5d831e5 | 6277 | { |
6278 | sym = NULL; | |
f0efd2e8 | 6279 | if (!typeparam && !gfc_notify_std (GFC_STD_F95_OBS, |
6280 | "Alternate-return argument at %C")) | |
a5d831e5 | 6281 | { |
6282 | m = MATCH_ERROR; | |
6283 | goto cleanup; | |
6284 | } | |
f0efd2e8 | 6285 | else if (typeparam) |
6286 | gfc_error_now ("A parameter name is required at %C"); | |
a5d831e5 | 6287 | } |
4ee9c684 | 6288 | else |
6289 | { | |
6290 | m = gfc_match_name (name); | |
6291 | if (m != MATCH_YES) | |
f0efd2e8 | 6292 | { |
6293 | if(typeparam) | |
6294 | gfc_error_now ("A parameter name is required at %C"); | |
6295 | goto cleanup; | |
6296 | } | |
4ee9c684 | 6297 | |
9d958d5b | 6298 | if (!typeparam && gfc_get_symbol (name, NULL, &sym)) |
6299 | goto cleanup; | |
6300 | else if (typeparam | |
6301 | && gfc_get_symbol (name, progname->f2k_derived, &sym)) | |
4ee9c684 | 6302 | goto cleanup; |
6303 | } | |
6304 | ||
6305 | p = gfc_get_formal_arglist (); | |
6306 | ||
6307 | if (head == NULL) | |
6308 | head = tail = p; | |
6309 | else | |
6310 | { | |
6311 | tail->next = p; | |
6312 | tail = p; | |
6313 | } | |
6314 | ||
6315 | tail->sym = sym; | |
6316 | ||
6317 | /* We don't add the VARIABLE flavor because the name could be a | |
1a9745d2 | 6318 | dummy procedure. We don't apply these attributes to formal |
6319 | arguments of statement functions. */ | |
4ee9c684 | 6320 | if (sym != NULL && !st_flag |
60e19868 | 6321 | && (!gfc_add_dummy(&sym->attr, sym->name, NULL) |
6322 | || !gfc_missing_attr (&sym->attr, NULL))) | |
4ee9c684 | 6323 | { |
6324 | m = MATCH_ERROR; | |
6325 | goto cleanup; | |
6326 | } | |
6327 | ||
6328 | /* The name of a program unit can be in a different namespace, | |
1a9745d2 | 6329 | so check for it explicitly. After the statement is accepted, |
6330 | the name is checked for especially in gfc_get_symbol(). */ | |
1148eb54 | 6331 | if (gfc_new_block != NULL && sym != NULL && !typeparam |
4ee9c684 | 6332 | && strcmp (sym->name, gfc_new_block->name) == 0) |
6333 | { | |
716da296 | 6334 | gfc_error ("Name %qs at %C is the name of the procedure", |
4ee9c684 | 6335 | sym->name); |
6336 | m = MATCH_ERROR; | |
6337 | goto cleanup; | |
6338 | } | |
6339 | ||
6340 | if (gfc_match_char (')') == MATCH_YES) | |
6341 | goto ok; | |
6342 | ||
6343 | m = gfc_match_char (','); | |
6344 | if (m != MATCH_YES) | |
6345 | { | |
1148eb54 | 6346 | if (typeparam) |
6347 | gfc_error_now ("Expected parameter list in type declaration " | |
6348 | "at %C"); | |
6349 | else | |
6350 | gfc_error ("Unexpected junk in formal argument list at %C"); | |
4ee9c684 | 6351 | goto cleanup; |
6352 | } | |
6353 | } | |
6354 | ||
6355 | ok: | |
6356 | /* Check for duplicate symbols in the formal argument list. */ | |
6357 | if (head != NULL) | |
6358 | { | |
6359 | for (p = head; p->next; p = p->next) | |
6360 | { | |
6361 | if (p->sym == NULL) | |
6362 | continue; | |
6363 | ||
6364 | for (q = p->next; q; q = q->next) | |
6365 | if (p->sym == q->sym) | |
6366 | { | |
1148eb54 | 6367 | if (typeparam) |
6368 | gfc_error_now ("Duplicate name %qs in parameter " | |
6369 | "list at %C", p->sym->name); | |
6370 | else | |
6371 | gfc_error ("Duplicate symbol %qs in formal argument " | |
6372 | "list at %C", p->sym->name); | |
4ee9c684 | 6373 | |
6374 | m = MATCH_ERROR; | |
6375 | goto cleanup; | |
6376 | } | |
6377 | } | |
6378 | } | |
6379 | ||
60e19868 | 6380 | if (!gfc_add_explicit_interface (progname, IFSRC_DECL, head, NULL)) |
4ee9c684 | 6381 | { |
6382 | m = MATCH_ERROR; | |
6383 | goto cleanup; | |
6384 | } | |
6385 | ||
cc78610f | 6386 | /* gfc_error_now used in following and return with MATCH_YES because |
6387 | doing otherwise results in a cascade of extraneous errors and in | |
6388 | some cases an ICE in symbol.c(gfc_release_symbol). */ | |
a23f57e2 | 6389 | if (progname->attr.module_procedure && progname->attr.host_assoc) |
4b8eb6ca | 6390 | { |
a23f57e2 | 6391 | bool arg_count_mismatch = false; |
6392 | ||
6393 | if (!formal && head) | |
6394 | arg_count_mismatch = true; | |
6395 | ||
6396 | /* Abbreviated module procedure declaration is not meant to have any | |
6397 | formal arguments! */ | |
cc78610f | 6398 | if (!progname->abr_modproc_decl && formal && !head) |
a23f57e2 | 6399 | arg_count_mismatch = true; |
6400 | ||
4b8eb6ca | 6401 | for (p = formal, q = head; p && q; p = p->next, q = q->next) |
6402 | { | |
6403 | if ((p->next != NULL && q->next == NULL) | |
6404 | || (p->next == NULL && q->next != NULL)) | |
a23f57e2 | 6405 | arg_count_mismatch = true; |
4b8eb6ca | 6406 | else if ((p->sym == NULL && q->sym == NULL) |
6407 | || strcmp (p->sym->name, q->sym->name) == 0) | |
6408 | continue; | |
6409 | else | |
6410 | gfc_error_now ("Mismatch in MODULE PROCEDURE formal " | |
6411 | "argument names (%s/%s) at %C", | |
6412 | p->sym->name, q->sym->name); | |
6413 | } | |
a23f57e2 | 6414 | |
6415 | if (arg_count_mismatch) | |
6416 | gfc_error_now ("Mismatch in number of MODULE PROCEDURE " | |
6417 | "formal arguments at %C"); | |
4b8eb6ca | 6418 | } |
6419 | ||
4ee9c684 | 6420 | return MATCH_YES; |
6421 | ||
6422 | cleanup: | |
6423 | gfc_free_formal_arglist (head); | |
6424 | return m; | |
6425 | } | |
6426 | ||
6427 | ||
6428 | /* Match a RESULT specification following a function declaration or | |
6429 | ENTRY statement. Also matches the end-of-statement. */ | |
6430 | ||
6431 | static match | |
f6d0e37a | 6432 | match_result (gfc_symbol *function, gfc_symbol **result) |
4ee9c684 | 6433 | { |
6434 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6435 | gfc_symbol *r; | |
6436 | match m; | |
6437 | ||
6438 | if (gfc_match (" result (") != MATCH_YES) | |
6439 | return MATCH_NO; | |
6440 | ||
6441 | m = gfc_match_name (name); | |
6442 | if (m != MATCH_YES) | |
6443 | return m; | |
6444 | ||
c5d33754 | 6445 | /* Get the right paren, and that's it because there could be the |
6446 | bind(c) attribute after the result clause. */ | |
60e19868 | 6447 | if (gfc_match_char (')') != MATCH_YES) |
4ee9c684 | 6448 | { |
c5d33754 | 6449 | /* TODO: should report the missing right paren here. */ |
4ee9c684 | 6450 | return MATCH_ERROR; |
6451 | } | |
6452 | ||
6453 | if (strcmp (function->name, name) == 0) | |
6454 | { | |
1a9745d2 | 6455 | gfc_error ("RESULT variable at %C must be different than function name"); |
4ee9c684 | 6456 | return MATCH_ERROR; |
6457 | } | |
6458 | ||
6459 | if (gfc_get_symbol (name, NULL, &r)) | |
6460 | return MATCH_ERROR; | |
6461 | ||
60e19868 | 6462 | if (!gfc_add_result (&r->attr, r->name, NULL)) |
4ee9c684 | 6463 | return MATCH_ERROR; |
6464 | ||
6465 | *result = r; | |
6466 | ||
6467 | return MATCH_YES; | |
6468 | } | |
6469 | ||
6470 | ||
c5d33754 | 6471 | /* Match a function suffix, which could be a combination of a result |
6472 | clause and BIND(C), either one, or neither. The draft does not | |
6473 | require them to come in a specific order. */ | |
6474 | ||
6475 | match | |
6476 | gfc_match_suffix (gfc_symbol *sym, gfc_symbol **result) | |
6477 | { | |
6478 | match is_bind_c; /* Found bind(c). */ | |
6479 | match is_result; /* Found result clause. */ | |
6480 | match found_match; /* Status of whether we've found a good match. */ | |
e0be6f02 | 6481 | char peek_char; /* Character we're going to peek at. */ |
75ae7f6c | 6482 | bool allow_binding_name; |
c5d33754 | 6483 | |
6484 | /* Initialize to having found nothing. */ | |
6485 | found_match = MATCH_NO; | |
8db94b3b | 6486 | is_bind_c = MATCH_NO; |
c5d33754 | 6487 | is_result = MATCH_NO; |
6488 | ||
6489 | /* Get the next char to narrow between result and bind(c). */ | |
6490 | gfc_gobble_whitespace (); | |
e0be6f02 | 6491 | peek_char = gfc_peek_ascii_char (); |
c5d33754 | 6492 | |
75ae7f6c | 6493 | /* C binding names are not allowed for internal procedures. */ |
6494 | if (gfc_current_state () == COMP_CONTAINS | |
6495 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
6496 | allow_binding_name = false; | |
6497 | else | |
6498 | allow_binding_name = true; | |
6499 | ||
c5d33754 | 6500 | switch (peek_char) |
6501 | { | |
6502 | case 'r': | |
6503 | /* Look for result clause. */ | |
6504 | is_result = match_result (sym, result); | |
6505 | if (is_result == MATCH_YES) | |
6506 | { | |
6507 | /* Now see if there is a bind(c) after it. */ | |
75ae7f6c | 6508 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
c5d33754 | 6509 | /* We've found the result clause and possibly bind(c). */ |
6510 | found_match = MATCH_YES; | |
6511 | } | |
6512 | else | |
6513 | /* This should only be MATCH_ERROR. */ | |
8db94b3b | 6514 | found_match = is_result; |
c5d33754 | 6515 | break; |
6516 | case 'b': | |
6517 | /* Look for bind(c) first. */ | |
75ae7f6c | 6518 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
c5d33754 | 6519 | if (is_bind_c == MATCH_YES) |
6520 | { | |
6521 | /* Now see if a result clause followed it. */ | |
6522 | is_result = match_result (sym, result); | |
6523 | found_match = MATCH_YES; | |
6524 | } | |
6525 | else | |
6526 | { | |
6527 | /* Should only be a MATCH_ERROR if we get here after seeing 'b'. */ | |
6528 | found_match = MATCH_ERROR; | |
6529 | } | |
6530 | break; | |
6531 | default: | |
6532 | gfc_error ("Unexpected junk after function declaration at %C"); | |
6533 | found_match = MATCH_ERROR; | |
6534 | break; | |
6535 | } | |
6536 | ||
c5d33754 | 6537 | if (is_bind_c == MATCH_YES) |
4518e961 | 6538 | { |
75ae7f6c | 6539 | /* Fortran 2008 draft allows BIND(C) for internal procedures. */ |
4518e961 | 6540 | if (gfc_current_state () == COMP_CONTAINS |
75ae7f6c | 6541 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
60e19868 | 6542 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
6543 | "at %L may not be specified for an internal " | |
6544 | "procedure", &gfc_current_locus)) | |
75ae7f6c | 6545 | return MATCH_ERROR; |
6546 | ||
60e19868 | 6547 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, &gfc_current_locus, 1)) |
4518e961 | 6548 | return MATCH_ERROR; |
6549 | } | |
8db94b3b | 6550 | |
c5d33754 | 6551 | return found_match; |
6552 | } | |
6553 | ||
6554 | ||
1e057e9b | 6555 | /* Procedure pointer return value without RESULT statement: |
6556 | Add "hidden" result variable named "ppr@". */ | |
6557 | ||
60e19868 | 6558 | static bool |
1e057e9b | 6559 | add_hidden_procptr_result (gfc_symbol *sym) |
6560 | { | |
6561 | bool case1,case2; | |
6562 | ||
6563 | if (gfc_notification_std (GFC_STD_F2003) == ERROR) | |
60e19868 | 6564 | return false; |
1e057e9b | 6565 | |
6566 | /* First usage case: PROCEDURE and EXTERNAL statements. */ | |
6567 | case1 = gfc_current_state () == COMP_FUNCTION && gfc_current_block () | |
6568 | && strcmp (gfc_current_block ()->name, sym->name) == 0 | |
6569 | && sym->attr.external; | |
6570 | /* Second usage case: INTERFACE statements. */ | |
6571 | case2 = gfc_current_state () == COMP_INTERFACE && gfc_state_stack->previous | |
6572 | && gfc_state_stack->previous->state == COMP_FUNCTION | |
6573 | && strcmp (gfc_state_stack->previous->sym->name, sym->name) == 0; | |
6574 | ||
6575 | if (case1 || case2) | |
6576 | { | |
6577 | gfc_symtree *stree; | |
6578 | if (case1) | |
36b0a1b0 | 6579 | gfc_get_sym_tree ("ppr@", gfc_current_ns, &stree, false); |
f8e5c21b | 6580 | else |
180a5dc0 | 6581 | { |
6582 | gfc_symtree *st2; | |
36b0a1b0 | 6583 | gfc_get_sym_tree ("ppr@", gfc_current_ns->parent, &stree, false); |
180a5dc0 | 6584 | st2 = gfc_new_symtree (&gfc_current_ns->sym_root, "ppr@"); |
6585 | st2->n.sym = stree->n.sym; | |
35ae89b7 | 6586 | stree->n.sym->refs++; |
180a5dc0 | 6587 | } |
1e057e9b | 6588 | sym->result = stree->n.sym; |
6589 | ||
6590 | sym->result->attr.proc_pointer = sym->attr.proc_pointer; | |
6591 | sym->result->attr.pointer = sym->attr.pointer; | |
6592 | sym->result->attr.external = sym->attr.external; | |
6593 | sym->result->attr.referenced = sym->attr.referenced; | |
e40ac2fe | 6594 | sym->result->ts = sym->ts; |
1e057e9b | 6595 | sym->attr.proc_pointer = 0; |
6596 | sym->attr.pointer = 0; | |
6597 | sym->attr.external = 0; | |
6598 | if (sym->result->attr.external && sym->result->attr.pointer) | |
6599 | { | |
6600 | sym->result->attr.pointer = 0; | |
6601 | sym->result->attr.proc_pointer = 1; | |
6602 | } | |
6603 | ||
6604 | return gfc_add_result (&sym->result->attr, sym->result->name, NULL); | |
6605 | } | |
6606 | /* POINTER after PROCEDURE/EXTERNAL/INTERFACE statement. */ | |
6607 | else if (sym->attr.function && !sym->attr.external && sym->attr.pointer | |
6608 | && sym->result && sym->result != sym && sym->result->attr.external | |
6609 | && sym == gfc_current_ns->proc_name | |
6610 | && sym == sym->result->ns->proc_name | |
6611 | && strcmp ("ppr@", sym->result->name) == 0) | |
6612 | { | |
6613 | sym->result->attr.proc_pointer = 1; | |
6614 | sym->attr.pointer = 0; | |
60e19868 | 6615 | return true; |
1e057e9b | 6616 | } |
6617 | else | |
60e19868 | 6618 | return false; |
1e057e9b | 6619 | } |
6620 | ||
6621 | ||
64e93293 | 6622 | /* Match the interface for a PROCEDURE declaration, |
6623 | including brackets (R1212). */ | |
af1a34ee | 6624 | |
6625 | static match | |
64e93293 | 6626 | match_procedure_interface (gfc_symbol **proc_if) |
af1a34ee | 6627 | { |
6628 | match m; | |
1eb2b542 | 6629 | gfc_symtree *st; |
af1a34ee | 6630 | locus old_loc, entry_loc; |
1eb2b542 | 6631 | gfc_namespace *old_ns = gfc_current_ns; |
6632 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
af1a34ee | 6633 | |
1eb2b542 | 6634 | old_loc = entry_loc = gfc_current_locus; |
af1a34ee | 6635 | gfc_clear_ts (¤t_ts); |
6636 | ||
6637 | if (gfc_match (" (") != MATCH_YES) | |
6638 | { | |
6639 | gfc_current_locus = entry_loc; | |
6640 | return MATCH_NO; | |
6641 | } | |
6642 | ||
6643 | /* Get the type spec. for the procedure interface. */ | |
6644 | old_loc = gfc_current_locus; | |
e8152f13 | 6645 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
fd1277c3 | 6646 | gfc_gobble_whitespace (); |
e0be6f02 | 6647 | if (m == MATCH_YES || (m == MATCH_NO && gfc_peek_ascii_char () == ')')) |
af1a34ee | 6648 | goto got_ts; |
6649 | ||
6650 | if (m == MATCH_ERROR) | |
6651 | return m; | |
6652 | ||
1eb2b542 | 6653 | /* Procedure interface is itself a procedure. */ |
af1a34ee | 6654 | gfc_current_locus = old_loc; |
1eb2b542 | 6655 | m = gfc_match_name (name); |
af1a34ee | 6656 | |
1eb2b542 | 6657 | /* First look to see if it is already accessible in the current |
6658 | namespace because it is use associated or contained. */ | |
6659 | st = NULL; | |
6660 | if (gfc_find_sym_tree (name, NULL, 0, &st)) | |
6661 | return MATCH_ERROR; | |
6662 | ||
6663 | /* If it is still not found, then try the parent namespace, if it | |
6664 | exists and create the symbol there if it is still not found. */ | |
6665 | if (gfc_current_ns->parent) | |
6666 | gfc_current_ns = gfc_current_ns->parent; | |
6667 | if (st == NULL && gfc_get_ha_sym_tree (name, &st)) | |
6668 | return MATCH_ERROR; | |
6669 | ||
6670 | gfc_current_ns = old_ns; | |
6671 | *proc_if = st->n.sym; | |
af1a34ee | 6672 | |
64e93293 | 6673 | if (*proc_if) |
af1a34ee | 6674 | { |
64e93293 | 6675 | (*proc_if)->refs++; |
74113644 | 6676 | /* Resolve interface if possible. That way, attr.procedure is only set |
6677 | if it is declared by a later procedure-declaration-stmt, which is | |
87863b31 | 6678 | invalid per F08:C1216 (cf. resolve_procedure_interface). */ |
7e9136f1 | 6679 | while ((*proc_if)->ts.interface |
6680 | && *proc_if != (*proc_if)->ts.interface) | |
64e93293 | 6681 | *proc_if = (*proc_if)->ts.interface; |
74113644 | 6682 | |
87863b31 | 6683 | if ((*proc_if)->attr.flavor == FL_UNKNOWN |
6684 | && (*proc_if)->ts.type == BT_UNKNOWN | |
76e207a9 | 6685 | && !gfc_add_flavor (&(*proc_if)->attr, FL_PROCEDURE, |
60e19868 | 6686 | (*proc_if)->name, NULL)) |
87863b31 | 6687 | return MATCH_ERROR; |
af1a34ee | 6688 | } |
6689 | ||
6690 | got_ts: | |
af1a34ee | 6691 | if (gfc_match (" )") != MATCH_YES) |
6692 | { | |
6693 | gfc_current_locus = entry_loc; | |
6694 | return MATCH_NO; | |
6695 | } | |
6696 | ||
64e93293 | 6697 | return MATCH_YES; |
6698 | } | |
6699 | ||
6700 | ||
6701 | /* Match a PROCEDURE declaration (R1211). */ | |
6702 | ||
6703 | static match | |
6704 | match_procedure_decl (void) | |
6705 | { | |
6706 | match m; | |
6707 | gfc_symbol *sym, *proc_if = NULL; | |
6708 | int num; | |
6709 | gfc_expr *initializer = NULL; | |
6710 | ||
293d72e0 | 6711 | /* Parse interface (with brackets). */ |
64e93293 | 6712 | m = match_procedure_interface (&proc_if); |
6713 | if (m != MATCH_YES) | |
6714 | return m; | |
6715 | ||
6716 | /* Parse attributes (with colons). */ | |
af1a34ee | 6717 | m = match_attr_spec(); |
6718 | if (m == MATCH_ERROR) | |
6719 | return MATCH_ERROR; | |
6720 | ||
caa3ea40 | 6721 | if (proc_if && proc_if->attr.is_bind_c && !current_attr.is_bind_c) |
6722 | { | |
6723 | current_attr.is_bind_c = 1; | |
6724 | has_name_equals = 0; | |
6725 | curr_binding_label = NULL; | |
6726 | } | |
6727 | ||
af1a34ee | 6728 | /* Get procedure symbols. */ |
6729 | for(num=1;;num++) | |
6730 | { | |
af1a34ee | 6731 | m = gfc_match_symbol (&sym, 0); |
6732 | if (m == MATCH_NO) | |
6733 | goto syntax; | |
6734 | else if (m == MATCH_ERROR) | |
6735 | return m; | |
6736 | ||
6737 | /* Add current_attr to the symbol attributes. */ | |
60e19868 | 6738 | if (!gfc_copy_attr (&sym->attr, ¤t_attr, NULL)) |
af1a34ee | 6739 | return MATCH_ERROR; |
6740 | ||
6741 | if (sym->attr.is_bind_c) | |
6742 | { | |
6743 | /* Check for C1218. */ | |
6744 | if (!proc_if || !proc_if->attr.is_bind_c) | |
6745 | { | |
6746 | gfc_error ("BIND(C) attribute at %C requires " | |
6747 | "an interface with BIND(C)"); | |
6748 | return MATCH_ERROR; | |
6749 | } | |
6750 | /* Check for C1217. */ | |
6751 | if (has_name_equals && sym->attr.pointer) | |
6752 | { | |
6753 | gfc_error ("BIND(C) procedure with NAME may not have " | |
6754 | "POINTER attribute at %C"); | |
6755 | return MATCH_ERROR; | |
6756 | } | |
6757 | if (has_name_equals && sym->attr.dummy) | |
6758 | { | |
6759 | gfc_error ("Dummy procedure at %C may not have " | |
6760 | "BIND(C) attribute with NAME"); | |
6761 | return MATCH_ERROR; | |
6762 | } | |
6763 | /* Set binding label for BIND(C). */ | |
60e19868 | 6764 | if (!set_binding_label (&sym->binding_label, sym->name, num)) |
af1a34ee | 6765 | return MATCH_ERROR; |
6766 | } | |
6767 | ||
60e19868 | 6768 | if (!gfc_add_external (&sym->attr, NULL)) |
af1a34ee | 6769 | return MATCH_ERROR; |
1e057e9b | 6770 | |
60e19868 | 6771 | if (add_hidden_procptr_result (sym)) |
1e057e9b | 6772 | sym = sym->result; |
6773 | ||
60e19868 | 6774 | if (!gfc_add_proc (&sym->attr, sym->name, NULL)) |
af1a34ee | 6775 | return MATCH_ERROR; |
6776 | ||
6777 | /* Set interface. */ | |
6778 | if (proc_if != NULL) | |
f7d7a083 | 6779 | { |
13a834aa | 6780 | if (sym->ts.type != BT_UNKNOWN) |
6781 | { | |
716da296 | 6782 | gfc_error ("Procedure %qs at %L already has basic type of %s", |
13a834aa | 6783 | sym->name, &gfc_current_locus, |
6784 | gfc_basic_typename (sym->ts.type)); | |
6785 | return MATCH_ERROR; | |
6786 | } | |
2cd2bb5c | 6787 | sym->ts.interface = proc_if; |
f7d7a083 | 6788 | sym->attr.untyped = 1; |
180a5dc0 | 6789 | sym->attr.if_source = IFSRC_IFBODY; |
f7d7a083 | 6790 | } |
af1a34ee | 6791 | else if (current_ts.type != BT_UNKNOWN) |
6792 | { | |
60e19868 | 6793 | if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
13a834aa | 6794 | return MATCH_ERROR; |
2cd2bb5c | 6795 | sym->ts.interface = gfc_new_symbol ("", gfc_current_ns); |
6796 | sym->ts.interface->ts = current_ts; | |
ce80bc5b | 6797 | sym->ts.interface->attr.flavor = FL_PROCEDURE; |
2cd2bb5c | 6798 | sym->ts.interface->attr.function = 1; |
ce80bc5b | 6799 | sym->attr.function = 1; |
180a5dc0 | 6800 | sym->attr.if_source = IFSRC_UNKNOWN; |
af1a34ee | 6801 | } |
6802 | ||
cad0ddcf | 6803 | if (gfc_match (" =>") == MATCH_YES) |
6804 | { | |
6805 | if (!current_attr.pointer) | |
6806 | { | |
6807 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
6808 | m = MATCH_ERROR; | |
6809 | goto cleanup; | |
6810 | } | |
6811 | ||
23d075f4 | 6812 | m = match_pointer_init (&initializer, 1); |
cad0ddcf | 6813 | if (m != MATCH_YES) |
6814 | goto cleanup; | |
6815 | ||
60e19868 | 6816 | if (!add_init_expr_to_sym (sym->name, &initializer, &gfc_current_locus)) |
cad0ddcf | 6817 | goto cleanup; |
6818 | ||
6819 | } | |
6820 | ||
af1a34ee | 6821 | if (gfc_match_eos () == MATCH_YES) |
6822 | return MATCH_YES; | |
6823 | if (gfc_match_char (',') != MATCH_YES) | |
6824 | goto syntax; | |
6825 | } | |
6826 | ||
6827 | syntax: | |
6828 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
6829 | return MATCH_ERROR; | |
cad0ddcf | 6830 | |
6831 | cleanup: | |
6832 | /* Free stuff up and return. */ | |
6833 | gfc_free_expr (initializer); | |
6834 | return m; | |
af1a34ee | 6835 | } |
6836 | ||
6837 | ||
64e93293 | 6838 | static match |
6839 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc); | |
6840 | ||
6841 | ||
6842 | /* Match a procedure pointer component declaration (R445). */ | |
6843 | ||
6844 | static match | |
6845 | match_ppc_decl (void) | |
6846 | { | |
6847 | match m; | |
6848 | gfc_symbol *proc_if = NULL; | |
6849 | gfc_typespec ts; | |
6850 | int num; | |
6851 | gfc_component *c; | |
6852 | gfc_expr *initializer = NULL; | |
6853 | gfc_typebound_proc* tb; | |
6854 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6855 | ||
6856 | /* Parse interface (with brackets). */ | |
6857 | m = match_procedure_interface (&proc_if); | |
6858 | if (m != MATCH_YES) | |
6859 | goto syntax; | |
6860 | ||
6861 | /* Parse attributes. */ | |
6862 | tb = XCNEW (gfc_typebound_proc); | |
6863 | tb->where = gfc_current_locus; | |
6864 | m = match_binding_attributes (tb, false, true); | |
6865 | if (m == MATCH_ERROR) | |
6866 | return m; | |
6867 | ||
64e93293 | 6868 | gfc_clear_attr (¤t_attr); |
6869 | current_attr.procedure = 1; | |
6870 | current_attr.proc_pointer = 1; | |
6871 | current_attr.access = tb->access; | |
6872 | current_attr.flavor = FL_PROCEDURE; | |
6873 | ||
6874 | /* Match the colons (required). */ | |
6875 | if (gfc_match (" ::") != MATCH_YES) | |
6876 | { | |
0d2b3c9c | 6877 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
64e93293 | 6878 | return MATCH_ERROR; |
6879 | } | |
6880 | ||
6881 | /* Check for C450. */ | |
6882 | if (!tb->nopass && proc_if == NULL) | |
6883 | { | |
6884 | gfc_error("NOPASS or explicit interface required at %C"); | |
6885 | return MATCH_ERROR; | |
6886 | } | |
6887 | ||
60e19868 | 6888 | if (!gfc_notify_std (GFC_STD_F2003, "Procedure pointer component at %C")) |
8a026279 | 6889 | return MATCH_ERROR; |
6890 | ||
64e93293 | 6891 | /* Match PPC names. */ |
6892 | ts = current_ts; | |
6893 | for(num=1;;num++) | |
6894 | { | |
6895 | m = gfc_match_name (name); | |
6896 | if (m == MATCH_NO) | |
6897 | goto syntax; | |
6898 | else if (m == MATCH_ERROR) | |
6899 | return m; | |
6900 | ||
60e19868 | 6901 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
64e93293 | 6902 | return MATCH_ERROR; |
6903 | ||
6904 | /* Add current_attr to the symbol attributes. */ | |
60e19868 | 6905 | if (!gfc_copy_attr (&c->attr, ¤t_attr, NULL)) |
64e93293 | 6906 | return MATCH_ERROR; |
6907 | ||
60e19868 | 6908 | if (!gfc_add_external (&c->attr, NULL)) |
64e93293 | 6909 | return MATCH_ERROR; |
6910 | ||
60e19868 | 6911 | if (!gfc_add_proc (&c->attr, name, NULL)) |
64e93293 | 6912 | return MATCH_ERROR; |
6913 | ||
99014f81 | 6914 | if (num == 1) |
6915 | c->tb = tb; | |
6916 | else | |
6917 | { | |
6918 | c->tb = XCNEW (gfc_typebound_proc); | |
6919 | c->tb->where = gfc_current_locus; | |
6920 | *c->tb = *tb; | |
6921 | } | |
fe9b08a2 | 6922 | |
64e93293 | 6923 | /* Set interface. */ |
6924 | if (proc_if != NULL) | |
6925 | { | |
6926 | c->ts.interface = proc_if; | |
6927 | c->attr.untyped = 1; | |
6928 | c->attr.if_source = IFSRC_IFBODY; | |
6929 | } | |
6930 | else if (ts.type != BT_UNKNOWN) | |
6931 | { | |
6932 | c->ts = ts; | |
6933 | c->ts.interface = gfc_new_symbol ("", gfc_current_ns); | |
a63bcd97 | 6934 | c->ts.interface->result = c->ts.interface; |
64e93293 | 6935 | c->ts.interface->ts = ts; |
ce80bc5b | 6936 | c->ts.interface->attr.flavor = FL_PROCEDURE; |
64e93293 | 6937 | c->ts.interface->attr.function = 1; |
ce80bc5b | 6938 | c->attr.function = 1; |
64e93293 | 6939 | c->attr.if_source = IFSRC_UNKNOWN; |
6940 | } | |
6941 | ||
6942 | if (gfc_match (" =>") == MATCH_YES) | |
6943 | { | |
23d075f4 | 6944 | m = match_pointer_init (&initializer, 1); |
64e93293 | 6945 | if (m != MATCH_YES) |
6946 | { | |
6947 | gfc_free_expr (initializer); | |
6948 | return m; | |
6949 | } | |
6950 | c->initializer = initializer; | |
6951 | } | |
6952 | ||
6953 | if (gfc_match_eos () == MATCH_YES) | |
6954 | return MATCH_YES; | |
6955 | if (gfc_match_char (',') != MATCH_YES) | |
6956 | goto syntax; | |
6957 | } | |
6958 | ||
6959 | syntax: | |
6960 | gfc_error ("Syntax error in procedure pointer component at %C"); | |
6961 | return MATCH_ERROR; | |
6962 | } | |
6963 | ||
6964 | ||
af1a34ee | 6965 | /* Match a PROCEDURE declaration inside an interface (R1206). */ |
6966 | ||
6967 | static match | |
6968 | match_procedure_in_interface (void) | |
6969 | { | |
6970 | match m; | |
6971 | gfc_symbol *sym; | |
6972 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
2b0f5dc8 | 6973 | locus old_locus; |
af1a34ee | 6974 | |
6975 | if (current_interface.type == INTERFACE_NAMELESS | |
6976 | || current_interface.type == INTERFACE_ABSTRACT) | |
6977 | { | |
6978 | gfc_error ("PROCEDURE at %C must be in a generic interface"); | |
6979 | return MATCH_ERROR; | |
6980 | } | |
6981 | ||
2b0f5dc8 | 6982 | /* Check if the F2008 optional double colon appears. */ |
6983 | gfc_gobble_whitespace (); | |
6984 | old_locus = gfc_current_locus; | |
6985 | if (gfc_match ("::") == MATCH_YES) | |
6986 | { | |
60e19868 | 6987 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
6988 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
2b0f5dc8 | 6989 | return MATCH_ERROR; |
6990 | } | |
6991 | else | |
6992 | gfc_current_locus = old_locus; | |
6993 | ||
af1a34ee | 6994 | for(;;) |
6995 | { | |
6996 | m = gfc_match_name (name); | |
6997 | if (m == MATCH_NO) | |
6998 | goto syntax; | |
6999 | else if (m == MATCH_ERROR) | |
7000 | return m; | |
7001 | if (gfc_get_symbol (name, gfc_current_ns->parent, &sym)) | |
7002 | return MATCH_ERROR; | |
7003 | ||
60e19868 | 7004 | if (!gfc_add_interface (sym)) |
af1a34ee | 7005 | return MATCH_ERROR; |
7006 | ||
af1a34ee | 7007 | if (gfc_match_eos () == MATCH_YES) |
7008 | break; | |
7009 | if (gfc_match_char (',') != MATCH_YES) | |
7010 | goto syntax; | |
7011 | } | |
7012 | ||
7013 | return MATCH_YES; | |
7014 | ||
7015 | syntax: | |
7016 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
7017 | return MATCH_ERROR; | |
7018 | } | |
7019 | ||
7020 | ||
7021 | /* General matcher for PROCEDURE declarations. */ | |
7022 | ||
7fd88f6e | 7023 | static match match_procedure_in_type (void); |
7024 | ||
af1a34ee | 7025 | match |
7026 | gfc_match_procedure (void) | |
7027 | { | |
7028 | match m; | |
7029 | ||
7030 | switch (gfc_current_state ()) | |
7031 | { | |
7032 | case COMP_NONE: | |
7033 | case COMP_PROGRAM: | |
7034 | case COMP_MODULE: | |
4b8eb6ca | 7035 | case COMP_SUBMODULE: |
af1a34ee | 7036 | case COMP_SUBROUTINE: |
7037 | case COMP_FUNCTION: | |
0b342e60 | 7038 | case COMP_BLOCK: |
af1a34ee | 7039 | m = match_procedure_decl (); |
7040 | break; | |
7041 | case COMP_INTERFACE: | |
7042 | m = match_procedure_in_interface (); | |
7043 | break; | |
7044 | case COMP_DERIVED: | |
64e93293 | 7045 | m = match_ppc_decl (); |
7046 | break; | |
7fd88f6e | 7047 | case COMP_DERIVED_CONTAINS: |
7048 | m = match_procedure_in_type (); | |
7049 | break; | |
af1a34ee | 7050 | default: |
7051 | return MATCH_NO; | |
7052 | } | |
7053 | ||
7054 | if (m != MATCH_YES) | |
7055 | return m; | |
7056 | ||
60e19868 | 7057 | if (!gfc_notify_std (GFC_STD_F2003, "PROCEDURE statement at %C")) |
af1a34ee | 7058 | return MATCH_ERROR; |
7059 | ||
7060 | return m; | |
7061 | } | |
7062 | ||
7063 | ||
a34926ba | 7064 | /* Warn if a matched procedure has the same name as an intrinsic; this is |
7065 | simply a wrapper around gfc_warn_intrinsic_shadow that interprets the current | |
7066 | parser-state-stack to find out whether we're in a module. */ | |
7067 | ||
7068 | static void | |
8290d53f | 7069 | do_warn_intrinsic_shadow (const gfc_symbol* sym, bool func) |
a34926ba | 7070 | { |
7071 | bool in_module; | |
7072 | ||
7073 | in_module = (gfc_state_stack->previous | |
4b8eb6ca | 7074 | && (gfc_state_stack->previous->state == COMP_MODULE |
7075 | || gfc_state_stack->previous->state == COMP_SUBMODULE)); | |
a34926ba | 7076 | |
7077 | gfc_warn_intrinsic_shadow (sym, in_module, func); | |
7078 | } | |
7079 | ||
7080 | ||
4ee9c684 | 7081 | /* Match a function declaration. */ |
7082 | ||
7083 | match | |
7084 | gfc_match_function_decl (void) | |
7085 | { | |
7086 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7087 | gfc_symbol *sym, *result; | |
7088 | locus old_loc; | |
7089 | match m; | |
c5d33754 | 7090 | match suffix_match; |
8db94b3b | 7091 | match found_match; /* Status returned by match func. */ |
4ee9c684 | 7092 | |
7093 | if (gfc_current_state () != COMP_NONE | |
7094 | && gfc_current_state () != COMP_INTERFACE | |
7095 | && gfc_current_state () != COMP_CONTAINS) | |
7096 | return MATCH_NO; | |
7097 | ||
7098 | gfc_clear_ts (¤t_ts); | |
7099 | ||
cbb9e6aa | 7100 | old_loc = gfc_current_locus; |
4ee9c684 | 7101 | |
077932f9 | 7102 | m = gfc_match_prefix (¤t_ts); |
4ee9c684 | 7103 | if (m != MATCH_YES) |
7104 | { | |
cbb9e6aa | 7105 | gfc_current_locus = old_loc; |
4ee9c684 | 7106 | return m; |
7107 | } | |
7108 | ||
7109 | if (gfc_match ("function% %n", name) != MATCH_YES) | |
7110 | { | |
cbb9e6aa | 7111 | gfc_current_locus = old_loc; |
4ee9c684 | 7112 | return MATCH_NO; |
7113 | } | |
4b8eb6ca | 7114 | |
d77f260f | 7115 | if (get_proc_name (name, &sym, false)) |
4ee9c684 | 7116 | return MATCH_ERROR; |
1e057e9b | 7117 | |
60e19868 | 7118 | if (add_hidden_procptr_result (sym)) |
1e057e9b | 7119 | sym = sym->result; |
7120 | ||
4b8eb6ca | 7121 | if (current_attr.module_procedure) |
7122 | sym->attr.module_procedure = 1; | |
7123 | ||
4ee9c684 | 7124 | gfc_new_block = sym; |
7125 | ||
7126 | m = gfc_match_formal_arglist (sym, 0, 0); | |
7127 | if (m == MATCH_NO) | |
9b435b6d | 7128 | { |
7129 | gfc_error ("Expected formal argument list in function " | |
1a9745d2 | 7130 | "definition at %C"); |
9b435b6d | 7131 | m = MATCH_ERROR; |
7132 | goto cleanup; | |
7133 | } | |
4ee9c684 | 7134 | else if (m == MATCH_ERROR) |
7135 | goto cleanup; | |
7136 | ||
7137 | result = NULL; | |
7138 | ||
c5d33754 | 7139 | /* According to the draft, the bind(c) and result clause can |
7140 | come in either order after the formal_arg_list (i.e., either | |
7141 | can be first, both can exist together or by themselves or neither | |
7142 | one). Therefore, the match_result can't match the end of the | |
7143 | string, and check for the bind(c) or result clause in either order. */ | |
7144 | found_match = gfc_match_eos (); | |
7145 | ||
7146 | /* Make sure that it isn't already declared as BIND(C). If it is, it | |
7147 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7148 | not allowed for procedures. */ | |
7149 | if (sym->attr.is_bind_c == 1) | |
7150 | { | |
7151 | sym->attr.is_bind_c = 0; | |
7152 | if (sym->old_symbol != NULL) | |
7153 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7154 | "variables or common blocks", | |
7155 | &(sym->old_symbol->declared_at)); | |
7156 | else | |
7157 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7158 | "variables or common blocks", &gfc_current_locus); | |
4ee9c684 | 7159 | } |
7160 | ||
c5d33754 | 7161 | if (found_match != MATCH_YES) |
4ee9c684 | 7162 | { |
c5d33754 | 7163 | /* If we haven't found the end-of-statement, look for a suffix. */ |
7164 | suffix_match = gfc_match_suffix (sym, &result); | |
7165 | if (suffix_match == MATCH_YES) | |
7166 | /* Need to get the eos now. */ | |
7167 | found_match = gfc_match_eos (); | |
7168 | else | |
7169 | found_match = suffix_match; | |
4ee9c684 | 7170 | } |
7171 | ||
c5d33754 | 7172 | if(found_match != MATCH_YES) |
7173 | m = MATCH_ERROR; | |
4ee9c684 | 7174 | else |
7175 | { | |
c5d33754 | 7176 | /* Make changes to the symbol. */ |
7177 | m = MATCH_ERROR; | |
8db94b3b | 7178 | |
60e19868 | 7179 | if (!gfc_add_function (&sym->attr, sym->name, NULL)) |
c5d33754 | 7180 | goto cleanup; |
8db94b3b | 7181 | |
76e207a9 | 7182 | if (!gfc_missing_attr (&sym->attr, NULL)) |
c5d33754 | 7183 | goto cleanup; |
4ee9c684 | 7184 | |
76e207a9 | 7185 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
7186 | { | |
7187 | if(!sym->attr.module_procedure) | |
7188 | goto cleanup; | |
7189 | else | |
7190 | gfc_error_check (); | |
7191 | } | |
7192 | ||
8d39570e | 7193 | /* Delay matching the function characteristics until after the |
077932f9 | 7194 | specification block by signalling kind=-1. */ |
8d39570e | 7195 | sym->declared_at = old_loc; |
7196 | if (current_ts.type != BT_UNKNOWN) | |
7197 | current_ts.kind = -1; | |
7198 | else | |
7199 | current_ts.kind = 0; | |
077932f9 | 7200 | |
c5d33754 | 7201 | if (result == NULL) |
7202 | { | |
0477d42d | 7203 | if (current_ts.type != BT_UNKNOWN |
60e19868 | 7204 | && !gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
0477d42d | 7205 | goto cleanup; |
c5d33754 | 7206 | sym->result = sym; |
7207 | } | |
7208 | else | |
7209 | { | |
0477d42d | 7210 | if (current_ts.type != BT_UNKNOWN |
60e19868 | 7211 | && !gfc_add_type (result, ¤t_ts, &gfc_current_locus)) |
0477d42d | 7212 | goto cleanup; |
c5d33754 | 7213 | sym->result = result; |
7214 | } | |
7215 | ||
a34926ba | 7216 | /* Warn if this procedure has the same name as an intrinsic. */ |
8290d53f | 7217 | do_warn_intrinsic_shadow (sym, true); |
a34926ba | 7218 | |
c5d33754 | 7219 | return MATCH_YES; |
7220 | } | |
4ee9c684 | 7221 | |
7222 | cleanup: | |
cbb9e6aa | 7223 | gfc_current_locus = old_loc; |
4ee9c684 | 7224 | return m; |
7225 | } | |
7226 | ||
1a9745d2 | 7227 | |
7228 | /* This is mostly a copy of parse.c(add_global_procedure) but modified to | |
7229 | pass the name of the entry, rather than the gfc_current_block name, and | |
7230 | to return false upon finding an existing global entry. */ | |
858f9894 | 7231 | |
7232 | static bool | |
8d779aef | 7233 | add_global_entry (const char *name, const char *binding_label, bool sub, |
7234 | locus *where) | |
858f9894 | 7235 | { |
7236 | gfc_gsymbol *s; | |
8458f4ca | 7237 | enum gfc_symbol_type type; |
858f9894 | 7238 | |
5b11d932 | 7239 | type = sub ? GSYM_SUBROUTINE : GSYM_FUNCTION; |
858f9894 | 7240 | |
da5c730d | 7241 | /* Only in Fortran 2003: For procedures with a binding label also the Fortran |
7242 | name is a global identifier. */ | |
7243 | if (!binding_label || gfc_notification_std (GFC_STD_F2008)) | |
858f9894 | 7244 | { |
da5c730d | 7245 | s = gfc_get_gsymbol (name); |
7246 | ||
7247 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
7248 | { | |
8d779aef | 7249 | gfc_global_used (s, where); |
da5c730d | 7250 | return false; |
7251 | } | |
7252 | else | |
7253 | { | |
7254 | s->type = type; | |
c8b913ab | 7255 | s->sym_name = name; |
8d779aef | 7256 | s->where = *where; |
da5c730d | 7257 | s->defined = 1; |
7258 | s->ns = gfc_current_ns; | |
7259 | } | |
858f9894 | 7260 | } |
da5c730d | 7261 | |
7262 | /* Don't add the symbol multiple times. */ | |
7263 | if (binding_label | |
7264 | && (!gfc_notification_std (GFC_STD_F2008) | |
7265 | || strcmp (name, binding_label) != 0)) | |
7266 | { | |
7267 | s = gfc_get_gsymbol (binding_label); | |
7268 | ||
7269 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
7270 | { | |
8d779aef | 7271 | gfc_global_used (s, where); |
da5c730d | 7272 | return false; |
7273 | } | |
7274 | else | |
7275 | { | |
7276 | s->type = type; | |
c8b913ab | 7277 | s->sym_name = name; |
da5c730d | 7278 | s->binding_label = binding_label; |
8d779aef | 7279 | s->where = *where; |
da5c730d | 7280 | s->defined = 1; |
7281 | s->ns = gfc_current_ns; | |
7282 | } | |
7283 | } | |
7284 | ||
7285 | return true; | |
858f9894 | 7286 | } |
4ee9c684 | 7287 | |
1a9745d2 | 7288 | |
4ee9c684 | 7289 | /* Match an ENTRY statement. */ |
7290 | ||
7291 | match | |
7292 | gfc_match_entry (void) | |
7293 | { | |
1b716045 | 7294 | gfc_symbol *proc; |
7295 | gfc_symbol *result; | |
7296 | gfc_symbol *entry; | |
4ee9c684 | 7297 | char name[GFC_MAX_SYMBOL_LEN + 1]; |
7298 | gfc_compile_state state; | |
7299 | match m; | |
1b716045 | 7300 | gfc_entry_list *el; |
7b5e1acc | 7301 | locus old_loc; |
d77f260f | 7302 | bool module_procedure; |
86f0974b | 7303 | char peek_char; |
7304 | match is_bind_c; | |
4ee9c684 | 7305 | |
7306 | m = gfc_match_name (name); | |
7307 | if (m != MATCH_YES) | |
7308 | return m; | |
7309 | ||
60e19868 | 7310 | if (!gfc_notify_std (GFC_STD_F2008_OBS, "ENTRY statement at %C")) |
a3b81b0f | 7311 | return MATCH_ERROR; |
7312 | ||
1b716045 | 7313 | state = gfc_current_state (); |
ea37f786 | 7314 | if (state != COMP_SUBROUTINE && state != COMP_FUNCTION) |
1b716045 | 7315 | { |
ea37f786 | 7316 | switch (state) |
7317 | { | |
7318 | case COMP_PROGRAM: | |
7319 | gfc_error ("ENTRY statement at %C cannot appear within a PROGRAM"); | |
7320 | break; | |
7321 | case COMP_MODULE: | |
7322 | gfc_error ("ENTRY statement at %C cannot appear within a MODULE"); | |
7323 | break; | |
4b8eb6ca | 7324 | case COMP_SUBMODULE: |
7325 | gfc_error ("ENTRY statement at %C cannot appear within a SUBMODULE"); | |
7326 | break; | |
ea37f786 | 7327 | case COMP_BLOCK_DATA: |
1a9745d2 | 7328 | gfc_error ("ENTRY statement at %C cannot appear within " |
7329 | "a BLOCK DATA"); | |
ea37f786 | 7330 | break; |
7331 | case COMP_INTERFACE: | |
1a9745d2 | 7332 | gfc_error ("ENTRY statement at %C cannot appear within " |
7333 | "an INTERFACE"); | |
ea37f786 | 7334 | break; |
d7cd448a | 7335 | case COMP_STRUCTURE: |
7336 | gfc_error ("ENTRY statement at %C cannot appear within " | |
7337 | "a STRUCTURE block"); | |
7338 | break; | |
ea37f786 | 7339 | case COMP_DERIVED: |
1a9745d2 | 7340 | gfc_error ("ENTRY statement at %C cannot appear within " |
7341 | "a DERIVED TYPE block"); | |
ea37f786 | 7342 | break; |
7343 | case COMP_IF: | |
1a9745d2 | 7344 | gfc_error ("ENTRY statement at %C cannot appear within " |
7345 | "an IF-THEN block"); | |
ea37f786 | 7346 | break; |
7347 | case COMP_DO: | |
55ea8666 | 7348 | case COMP_DO_CONCURRENT: |
1a9745d2 | 7349 | gfc_error ("ENTRY statement at %C cannot appear within " |
7350 | "a DO block"); | |
ea37f786 | 7351 | break; |
7352 | case COMP_SELECT: | |
1a9745d2 | 7353 | gfc_error ("ENTRY statement at %C cannot appear within " |
7354 | "a SELECT block"); | |
ea37f786 | 7355 | break; |
7356 | case COMP_FORALL: | |
1a9745d2 | 7357 | gfc_error ("ENTRY statement at %C cannot appear within " |
7358 | "a FORALL block"); | |
ea37f786 | 7359 | break; |
7360 | case COMP_WHERE: | |
1a9745d2 | 7361 | gfc_error ("ENTRY statement at %C cannot appear within " |
7362 | "a WHERE block"); | |
ea37f786 | 7363 | break; |
7364 | case COMP_CONTAINS: | |
1a9745d2 | 7365 | gfc_error ("ENTRY statement at %C cannot appear within " |
7366 | "a contained subprogram"); | |
ea37f786 | 7367 | break; |
7368 | default: | |
3132dbae | 7369 | gfc_error ("Unexpected ENTRY statement at %C"); |
ea37f786 | 7370 | } |
1b716045 | 7371 | return MATCH_ERROR; |
7372 | } | |
7373 | ||
c286c294 | 7374 | if ((state == COMP_SUBROUTINE || state == COMP_FUNCTION) |
7375 | && gfc_state_stack->previous->state == COMP_INTERFACE) | |
7376 | { | |
7377 | gfc_error ("ENTRY statement at %C cannot appear within an INTERFACE"); | |
7378 | return MATCH_ERROR; | |
7379 | } | |
7380 | ||
d77f260f | 7381 | module_procedure = gfc_current_ns->parent != NULL |
1a9745d2 | 7382 | && gfc_current_ns->parent->proc_name |
7383 | && gfc_current_ns->parent->proc_name->attr.flavor | |
7384 | == FL_MODULE; | |
d77f260f | 7385 | |
1b716045 | 7386 | if (gfc_current_ns->parent != NULL |
7387 | && gfc_current_ns->parent->proc_name | |
d77f260f | 7388 | && !module_procedure) |
1b716045 | 7389 | { |
7390 | gfc_error("ENTRY statement at %C cannot appear in a " | |
7391 | "contained procedure"); | |
7392 | return MATCH_ERROR; | |
7393 | } | |
7394 | ||
d77f260f | 7395 | /* Module function entries need special care in get_proc_name |
7396 | because previous references within the function will have | |
7397 | created symbols attached to the current namespace. */ | |
7398 | if (get_proc_name (name, &entry, | |
7399 | gfc_current_ns->parent != NULL | |
c1e4695a | 7400 | && module_procedure)) |
4ee9c684 | 7401 | return MATCH_ERROR; |
7402 | ||
1b716045 | 7403 | proc = gfc_current_block (); |
7404 | ||
86f0974b | 7405 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
7406 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7407 | not allowed for procedures. */ | |
7408 | if (entry->attr.is_bind_c == 1) | |
7409 | { | |
7410 | entry->attr.is_bind_c = 0; | |
7411 | if (entry->old_symbol != NULL) | |
7412 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7413 | "variables or common blocks", | |
7414 | &(entry->old_symbol->declared_at)); | |
7415 | else | |
7416 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7417 | "variables or common blocks", &gfc_current_locus); | |
7418 | } | |
8db94b3b | 7419 | |
86f0974b | 7420 | /* Check what next non-whitespace character is so we can tell if there |
7421 | is the required parens if we have a BIND(C). */ | |
8d779aef | 7422 | old_loc = gfc_current_locus; |
86f0974b | 7423 | gfc_gobble_whitespace (); |
e0be6f02 | 7424 | peek_char = gfc_peek_ascii_char (); |
86f0974b | 7425 | |
1b716045 | 7426 | if (state == COMP_SUBROUTINE) |
4ee9c684 | 7427 | { |
4ee9c684 | 7428 | m = gfc_match_formal_arglist (entry, 0, 1); |
7429 | if (m != MATCH_YES) | |
7430 | return MATCH_ERROR; | |
7431 | ||
75ae7f6c | 7432 | /* Call gfc_match_bind_c with allow_binding_name = true as ENTRY can |
7433 | never be an internal procedure. */ | |
7434 | is_bind_c = gfc_match_bind_c (entry, true); | |
86f0974b | 7435 | if (is_bind_c == MATCH_ERROR) |
7436 | return MATCH_ERROR; | |
7437 | if (is_bind_c == MATCH_YES) | |
7438 | { | |
7439 | if (peek_char != '(') | |
7440 | { | |
7441 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
7442 | return MATCH_ERROR; | |
7443 | } | |
0e8475b7 | 7444 | |
7445 | if (!gfc_add_is_bind_c (&(entry->attr), entry->name, | |
7446 | &(entry->declared_at), 1)) | |
7447 | return MATCH_ERROR; | |
7448 | ||
86f0974b | 7449 | } |
7450 | ||
da5c730d | 7451 | if (!gfc_current_ns->parent |
8d779aef | 7452 | && !add_global_entry (name, entry->binding_label, true, |
7453 | &old_loc)) | |
da5c730d | 7454 | return MATCH_ERROR; |
7455 | ||
7456 | /* An entry in a subroutine. */ | |
60e19868 | 7457 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7458 | || !gfc_add_subroutine (&entry->attr, entry->name, NULL)) | |
4ee9c684 | 7459 | return MATCH_ERROR; |
1b716045 | 7460 | } |
7461 | else | |
7462 | { | |
7b5e1acc | 7463 | /* An entry in a function. |
1a9745d2 | 7464 | We need to take special care because writing |
7465 | ENTRY f() | |
7466 | as | |
7467 | ENTRY f | |
7468 | is allowed, whereas | |
7469 | ENTRY f() RESULT (r) | |
7470 | can't be written as | |
7471 | ENTRY f RESULT (r). */ | |
7b5e1acc | 7472 | if (gfc_match_eos () == MATCH_YES) |
7473 | { | |
7474 | gfc_current_locus = old_loc; | |
7475 | /* Match the empty argument list, and add the interface to | |
7476 | the symbol. */ | |
7477 | m = gfc_match_formal_arglist (entry, 0, 1); | |
7478 | } | |
7479 | else | |
7480 | m = gfc_match_formal_arglist (entry, 0, 0); | |
7481 | ||
4ee9c684 | 7482 | if (m != MATCH_YES) |
7483 | return MATCH_ERROR; | |
7484 | ||
4ee9c684 | 7485 | result = NULL; |
7486 | ||
7487 | if (gfc_match_eos () == MATCH_YES) | |
7488 | { | |
60e19868 | 7489 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7490 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
4ee9c684 | 7491 | return MATCH_ERROR; |
7492 | ||
c6871095 | 7493 | entry->result = entry; |
4ee9c684 | 7494 | } |
7495 | else | |
7496 | { | |
86f0974b | 7497 | m = gfc_match_suffix (entry, &result); |
4ee9c684 | 7498 | if (m == MATCH_NO) |
7499 | gfc_syntax_error (ST_ENTRY); | |
7500 | if (m != MATCH_YES) | |
7501 | return MATCH_ERROR; | |
7502 | ||
86f0974b | 7503 | if (result) |
7504 | { | |
60e19868 | 7505 | if (!gfc_add_result (&result->attr, result->name, NULL) |
7506 | || !gfc_add_entry (&entry->attr, result->name, NULL) | |
7507 | || !gfc_add_function (&entry->attr, result->name, NULL)) | |
86f0974b | 7508 | return MATCH_ERROR; |
7509 | entry->result = result; | |
7510 | } | |
7511 | else | |
7512 | { | |
60e19868 | 7513 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7514 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
86f0974b | 7515 | return MATCH_ERROR; |
7516 | entry->result = entry; | |
7517 | } | |
4ee9c684 | 7518 | } |
da5c730d | 7519 | |
7520 | if (!gfc_current_ns->parent | |
8d779aef | 7521 | && !add_global_entry (name, entry->binding_label, false, |
7522 | &old_loc)) | |
da5c730d | 7523 | return MATCH_ERROR; |
4ee9c684 | 7524 | } |
7525 | ||
7526 | if (gfc_match_eos () != MATCH_YES) | |
7527 | { | |
7528 | gfc_syntax_error (ST_ENTRY); | |
7529 | return MATCH_ERROR; | |
7530 | } | |
7531 | ||
0e8475b7 | 7532 | /* F2018:C1546 An elemental procedure shall not have the BIND attribute. */ |
7533 | if (proc->attr.elemental && entry->attr.is_bind_c) | |
7534 | { | |
7535 | gfc_error ("ENTRY statement at %L with BIND(C) prohibited in an " | |
7536 | "elemental procedure", &entry->declared_at); | |
7537 | return MATCH_ERROR; | |
7538 | } | |
7539 | ||
1b716045 | 7540 | entry->attr.recursive = proc->attr.recursive; |
7541 | entry->attr.elemental = proc->attr.elemental; | |
7542 | entry->attr.pure = proc->attr.pure; | |
4ee9c684 | 7543 | |
1b716045 | 7544 | el = gfc_get_entry_list (); |
7545 | el->sym = entry; | |
7546 | el->next = gfc_current_ns->entries; | |
7547 | gfc_current_ns->entries = el; | |
7548 | if (el->next) | |
7549 | el->id = el->next->id + 1; | |
7550 | else | |
7551 | el->id = 1; | |
4ee9c684 | 7552 | |
1b716045 | 7553 | new_st.op = EXEC_ENTRY; |
7554 | new_st.ext.entry = el; | |
7555 | ||
7556 | return MATCH_YES; | |
4ee9c684 | 7557 | } |
7558 | ||
7559 | ||
7560 | /* Match a subroutine statement, including optional prefixes. */ | |
7561 | ||
7562 | match | |
7563 | gfc_match_subroutine (void) | |
7564 | { | |
7565 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7566 | gfc_symbol *sym; | |
7567 | match m; | |
c5d33754 | 7568 | match is_bind_c; |
7569 | char peek_char; | |
75ae7f6c | 7570 | bool allow_binding_name; |
2ae44fa6 | 7571 | locus loc; |
4ee9c684 | 7572 | |
7573 | if (gfc_current_state () != COMP_NONE | |
7574 | && gfc_current_state () != COMP_INTERFACE | |
7575 | && gfc_current_state () != COMP_CONTAINS) | |
7576 | return MATCH_NO; | |
7577 | ||
077932f9 | 7578 | m = gfc_match_prefix (NULL); |
4ee9c684 | 7579 | if (m != MATCH_YES) |
7580 | return m; | |
7581 | ||
7582 | m = gfc_match ("subroutine% %n", name); | |
7583 | if (m != MATCH_YES) | |
7584 | return m; | |
7585 | ||
d77f260f | 7586 | if (get_proc_name (name, &sym, false)) |
4ee9c684 | 7587 | return MATCH_ERROR; |
1e057e9b | 7588 | |
22c1d301 | 7589 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if |
293d72e0 | 7590 | the symbol existed before. */ |
22c1d301 | 7591 | sym->declared_at = gfc_current_locus; |
7592 | ||
4b8eb6ca | 7593 | if (current_attr.module_procedure) |
7594 | sym->attr.module_procedure = 1; | |
7595 | ||
60e19868 | 7596 | if (add_hidden_procptr_result (sym)) |
1e057e9b | 7597 | sym = sym->result; |
7598 | ||
4ee9c684 | 7599 | gfc_new_block = sym; |
7600 | ||
c5d33754 | 7601 | /* Check what next non-whitespace character is so we can tell if there |
86f0974b | 7602 | is the required parens if we have a BIND(C). */ |
c5d33754 | 7603 | gfc_gobble_whitespace (); |
e0be6f02 | 7604 | peek_char = gfc_peek_ascii_char (); |
8db94b3b | 7605 | |
60e19868 | 7606 | if (!gfc_add_subroutine (&sym->attr, sym->name, NULL)) |
4ee9c684 | 7607 | return MATCH_ERROR; |
7608 | ||
7609 | if (gfc_match_formal_arglist (sym, 0, 1) != MATCH_YES) | |
7610 | return MATCH_ERROR; | |
7611 | ||
c5d33754 | 7612 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
7613 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7614 | not allowed for procedures. */ | |
7615 | if (sym->attr.is_bind_c == 1) | |
7616 | { | |
7617 | sym->attr.is_bind_c = 0; | |
7618 | if (sym->old_symbol != NULL) | |
7619 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7620 | "variables or common blocks", | |
7621 | &(sym->old_symbol->declared_at)); | |
7622 | else | |
7623 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7624 | "variables or common blocks", &gfc_current_locus); | |
7625 | } | |
75ae7f6c | 7626 | |
7627 | /* C binding names are not allowed for internal procedures. */ | |
7628 | if (gfc_current_state () == COMP_CONTAINS | |
7629 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
7630 | allow_binding_name = false; | |
7631 | else | |
7632 | allow_binding_name = true; | |
7633 | ||
c5d33754 | 7634 | /* Here, we are just checking if it has the bind(c) attribute, and if |
7635 | so, then we need to make sure it's all correct. If it doesn't, | |
7636 | we still need to continue matching the rest of the subroutine line. */ | |
2ae44fa6 | 7637 | gfc_gobble_whitespace (); |
7638 | loc = gfc_current_locus; | |
75ae7f6c | 7639 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
c5d33754 | 7640 | if (is_bind_c == MATCH_ERROR) |
7641 | { | |
7642 | /* There was an attempt at the bind(c), but it was wrong. An | |
7643 | error message should have been printed w/in the gfc_match_bind_c | |
7644 | so here we'll just return the MATCH_ERROR. */ | |
7645 | return MATCH_ERROR; | |
7646 | } | |
7647 | ||
7648 | if (is_bind_c == MATCH_YES) | |
7649 | { | |
2ae44fa6 | 7650 | gfc_formal_arglist *arg; |
7651 | ||
75ae7f6c | 7652 | /* The following is allowed in the Fortran 2008 draft. */ |
4518e961 | 7653 | if (gfc_current_state () == COMP_CONTAINS |
75ae7f6c | 7654 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
60e19868 | 7655 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
7656 | "at %L may not be specified for an internal " | |
7657 | "procedure", &gfc_current_locus)) | |
75ae7f6c | 7658 | return MATCH_ERROR; |
7659 | ||
c5d33754 | 7660 | if (peek_char != '(') |
7661 | { | |
7662 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
7663 | return MATCH_ERROR; | |
7664 | } | |
2ae44fa6 | 7665 | |
7666 | /* Scan the dummy arguments for an alternate return. */ | |
7667 | for (arg = sym->formal; arg; arg = arg->next) | |
7668 | if (!arg->sym) | |
7669 | { | |
7670 | gfc_error ("Alternate return dummy argument cannot appear in a " | |
7671 | "SUBROUTINE with the BIND(C) attribute at %L", &loc); | |
7672 | return MATCH_ERROR; | |
7673 | } | |
7674 | ||
7675 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, &(sym->declared_at), 1)) | |
c5d33754 | 7676 | return MATCH_ERROR; |
7677 | } | |
8db94b3b | 7678 | |
4ee9c684 | 7679 | if (gfc_match_eos () != MATCH_YES) |
7680 | { | |
7681 | gfc_syntax_error (ST_SUBROUTINE); | |
7682 | return MATCH_ERROR; | |
7683 | } | |
7684 | ||
60e19868 | 7685 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
76e207a9 | 7686 | { |
7687 | if(!sym->attr.module_procedure) | |
7688 | return MATCH_ERROR; | |
7689 | else | |
7690 | gfc_error_check (); | |
7691 | } | |
4ee9c684 | 7692 | |
a34926ba | 7693 | /* Warn if it has the same name as an intrinsic. */ |
8290d53f | 7694 | do_warn_intrinsic_shadow (sym, false); |
a34926ba | 7695 | |
4ee9c684 | 7696 | return MATCH_YES; |
7697 | } | |
7698 | ||
7699 | ||
7136063b | 7700 | /* Check that the NAME identifier in a BIND attribute or statement |
7701 | is conform to C identifier rules. */ | |
7702 | ||
7703 | match | |
7704 | check_bind_name_identifier (char **name) | |
7705 | { | |
7706 | char *n = *name, *p; | |
7707 | ||
7708 | /* Remove leading spaces. */ | |
7709 | while (*n == ' ') | |
7710 | n++; | |
7711 | ||
7712 | /* On an empty string, free memory and set name to NULL. */ | |
7713 | if (*n == '\0') | |
7714 | { | |
7715 | free (*name); | |
7716 | *name = NULL; | |
7717 | return MATCH_YES; | |
7718 | } | |
7719 | ||
7720 | /* Remove trailing spaces. */ | |
7721 | p = n + strlen(n) - 1; | |
7722 | while (*p == ' ') | |
7723 | *(p--) = '\0'; | |
7724 | ||
7725 | /* Insert the identifier into the symbol table. */ | |
7726 | p = xstrdup (n); | |
7727 | free (*name); | |
7728 | *name = p; | |
7729 | ||
7730 | /* Now check that identifier is valid under C rules. */ | |
7731 | if (ISDIGIT (*p)) | |
7732 | { | |
7733 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
7734 | return MATCH_ERROR; | |
7735 | } | |
7736 | ||
7737 | for (; *p; p++) | |
7738 | if (!(ISALNUM (*p) || *p == '_' || *p == '$')) | |
7739 | { | |
7740 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
7741 | return MATCH_ERROR; | |
7742 | } | |
7743 | ||
7744 | return MATCH_YES; | |
7745 | } | |
7746 | ||
7747 | ||
c5d33754 | 7748 | /* Match a BIND(C) specifier, with the optional 'name=' specifier if |
7749 | given, and set the binding label in either the given symbol (if not | |
a0527218 | 7750 | NULL), or in the current_ts. The symbol may be NULL because we may |
c5d33754 | 7751 | encounter the BIND(C) before the declaration itself. Return |
7752 | MATCH_NO if what we're looking at isn't a BIND(C) specifier, | |
7753 | MATCH_ERROR if it is a BIND(C) clause but an error was encountered, | |
7754 | or MATCH_YES if the specifier was correct and the binding label and | |
7755 | bind(c) fields were set correctly for the given symbol or the | |
75ae7f6c | 7756 | current_ts. If allow_binding_name is false, no binding name may be |
7757 | given. */ | |
c5d33754 | 7758 | |
7759 | match | |
75ae7f6c | 7760 | gfc_match_bind_c (gfc_symbol *sym, bool allow_binding_name) |
c5d33754 | 7761 | { |
7136063b | 7762 | char *binding_label = NULL; |
7763 | gfc_expr *e = NULL; | |
c5d33754 | 7764 | |
8db94b3b | 7765 | /* Initialize the flag that specifies whether we encountered a NAME= |
c5d33754 | 7766 | specifier or not. */ |
7767 | has_name_equals = 0; | |
7768 | ||
c5d33754 | 7769 | /* This much we have to be able to match, in this order, if |
7770 | there is a bind(c) label. */ | |
7771 | if (gfc_match (" bind ( c ") != MATCH_YES) | |
7772 | return MATCH_NO; | |
7773 | ||
7774 | /* Now see if there is a binding label, or if we've reached the | |
7775 | end of the bind(c) attribute without one. */ | |
7776 | if (gfc_match_char (',') == MATCH_YES) | |
7777 | { | |
7778 | if (gfc_match (" name = ") != MATCH_YES) | |
7779 | { | |
7780 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
7781 | "at %C"); | |
7782 | /* should give an error message here */ | |
7783 | return MATCH_ERROR; | |
7784 | } | |
7785 | ||
7786 | has_name_equals = 1; | |
7787 | ||
7136063b | 7788 | if (gfc_match_init_expr (&e) != MATCH_YES) |
7789 | { | |
7790 | gfc_free_expr (e); | |
7791 | return MATCH_ERROR; | |
7792 | } | |
8db94b3b | 7793 | |
7136063b | 7794 | if (!gfc_simplify_expr(e, 0)) |
c5d33754 | 7795 | { |
7136063b | 7796 | gfc_error ("NAME= specifier at %C should be a constant expression"); |
7797 | gfc_free_expr (e); | |
7798 | return MATCH_ERROR; | |
c5d33754 | 7799 | } |
7136063b | 7800 | |
7801 | if (e->expr_type != EXPR_CONSTANT || e->ts.type != BT_CHARACTER | |
7802 | || e->ts.kind != gfc_default_character_kind || e->rank != 0) | |
c5d33754 | 7803 | { |
7136063b | 7804 | gfc_error ("NAME= specifier at %C should be a scalar of " |
7805 | "default character kind"); | |
7806 | gfc_free_expr(e); | |
7807 | return MATCH_ERROR; | |
c5d33754 | 7808 | } |
7136063b | 7809 | |
7810 | // Get a C string from the Fortran string constant | |
7811 | binding_label = gfc_widechar_to_char (e->value.character.string, | |
7812 | e->value.character.length); | |
7813 | gfc_free_expr(e); | |
7814 | ||
7815 | // Check that it is valid (old gfc_match_name_C) | |
7816 | if (check_bind_name_identifier (&binding_label) != MATCH_YES) | |
7817 | return MATCH_ERROR; | |
7818 | } | |
c5d33754 | 7819 | |
7820 | /* Get the required right paren. */ | |
7821 | if (gfc_match_char (')') != MATCH_YES) | |
7822 | { | |
7823 | gfc_error ("Missing closing paren for binding label at %C"); | |
7824 | return MATCH_ERROR; | |
7825 | } | |
7826 | ||
75ae7f6c | 7827 | if (has_name_equals && !allow_binding_name) |
7828 | { | |
7829 | gfc_error ("No binding name is allowed in BIND(C) at %C"); | |
7830 | return MATCH_ERROR; | |
7831 | } | |
7832 | ||
7833 | if (has_name_equals && sym != NULL && sym->attr.dummy) | |
7834 | { | |
7835 | gfc_error ("For dummy procedure %s, no binding name is " | |
7836 | "allowed in BIND(C) at %C", sym->name); | |
7837 | return MATCH_ERROR; | |
7838 | } | |
7839 | ||
7840 | ||
c5d33754 | 7841 | /* Save the binding label to the symbol. If sym is null, we're |
7842 | probably matching the typespec attributes of a declaration and | |
7843 | haven't gotten the name yet, and therefore, no symbol yet. */ | |
7b2060ba | 7844 | if (binding_label) |
c5d33754 | 7845 | { |
7846 | if (sym != NULL) | |
7b2060ba | 7847 | sym->binding_label = binding_label; |
c5d33754 | 7848 | else |
7b2060ba | 7849 | curr_binding_label = binding_label; |
c5d33754 | 7850 | } |
75ae7f6c | 7851 | else if (allow_binding_name) |
c5d33754 | 7852 | { |
7853 | /* No binding label, but if symbol isn't null, we | |
75ae7f6c | 7854 | can set the label for it here. |
7855 | If name="" or allow_binding_name is false, no C binding name is | |
293d72e0 | 7856 | created. */ |
c5d33754 | 7857 | if (sym != NULL && sym->name != NULL && has_name_equals == 0) |
7b2060ba | 7858 | sym->binding_label = IDENTIFIER_POINTER (get_identifier (sym->name)); |
c5d33754 | 7859 | } |
94fa7146 | 7860 | |
5cf92482 | 7861 | if (has_name_equals && gfc_current_state () == COMP_INTERFACE |
7862 | && current_interface.type == INTERFACE_ABSTRACT) | |
94fa7146 | 7863 | { |
7864 | gfc_error ("NAME not allowed on BIND(C) for ABSTRACT INTERFACE at %C"); | |
7865 | return MATCH_ERROR; | |
7866 | } | |
7867 | ||
c5d33754 | 7868 | return MATCH_YES; |
7869 | } | |
7870 | ||
7871 | ||
231e961a | 7872 | /* Return nonzero if we're currently compiling a contained procedure. */ |
c0985832 | 7873 | |
7874 | static int | |
7875 | contained_procedure (void) | |
7876 | { | |
1c343287 | 7877 | gfc_state_data *s = gfc_state_stack; |
c0985832 | 7878 | |
1c343287 | 7879 | if ((s->state == COMP_SUBROUTINE || s->state == COMP_FUNCTION) |
7880 | && s->previous != NULL && s->previous->state == COMP_CONTAINS) | |
7881 | return 1; | |
c0985832 | 7882 | |
7883 | return 0; | |
7884 | } | |
7885 | ||
e14bee04 | 7886 | /* Set the kind of each enumerator. The kind is selected such that it is |
3b6a4b41 | 7887 | interoperable with the corresponding C enumeration type, making |
7888 | sure that -fshort-enums is honored. */ | |
7889 | ||
7890 | static void | |
7891 | set_enum_kind(void) | |
7892 | { | |
7893 | enumerator_history *current_history = NULL; | |
7894 | int kind; | |
7895 | int i; | |
7896 | ||
7897 | if (max_enum == NULL || enum_history == NULL) | |
7898 | return; | |
7899 | ||
6f092e31 | 7900 | if (!flag_short_enums) |
e14bee04 | 7901 | return; |
7902 | ||
3b6a4b41 | 7903 | i = 0; |
7904 | do | |
7905 | { | |
7906 | kind = gfc_integer_kinds[i++].kind; | |
7907 | } | |
e14bee04 | 7908 | while (kind < gfc_c_int_kind |
3b6a4b41 | 7909 | && gfc_check_integer_range (max_enum->initializer->value.integer, |
7910 | kind) != ARITH_OK); | |
7911 | ||
7912 | current_history = enum_history; | |
7913 | while (current_history != NULL) | |
7914 | { | |
7915 | current_history->sym->ts.kind = kind; | |
7916 | current_history = current_history->next; | |
7917 | } | |
7918 | } | |
7919 | ||
1a9745d2 | 7920 | |
4ee9c684 | 7921 | /* Match any of the various end-block statements. Returns the type of |
6a7084d7 | 7922 | END to the caller. The END INTERFACE, END IF, END DO, END SELECT |
7923 | and END BLOCK statements cannot be replaced by a single END statement. */ | |
4ee9c684 | 7924 | |
7925 | match | |
1a9745d2 | 7926 | gfc_match_end (gfc_statement *st) |
4ee9c684 | 7927 | { |
7928 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7929 | gfc_compile_state state; | |
7930 | locus old_loc; | |
7931 | const char *block_name; | |
7932 | const char *target; | |
c0985832 | 7933 | int eos_ok; |
4ee9c684 | 7934 | match m; |
9e5e87d9 | 7935 | gfc_namespace *parent_ns, *ns, *prev_ns; |
7936 | gfc_namespace **nsp; | |
6ade726e | 7937 | bool abreviated_modproc_decl = false; |
cc7124a6 | 7938 | bool got_matching_end = false; |
4ee9c684 | 7939 | |
cbb9e6aa | 7940 | old_loc = gfc_current_locus; |
4ee9c684 | 7941 | if (gfc_match ("end") != MATCH_YES) |
7942 | return MATCH_NO; | |
7943 | ||
7944 | state = gfc_current_state (); | |
1a9745d2 | 7945 | block_name = gfc_current_block () == NULL |
7946 | ? NULL : gfc_current_block ()->name; | |
4ee9c684 | 7947 | |
d18a512a | 7948 | switch (state) |
4ee9c684 | 7949 | { |
d18a512a | 7950 | case COMP_ASSOCIATE: |
7951 | case COMP_BLOCK: | |
ea9e8242 | 7952 | if (gfc_str_startswith (block_name, "block@")) |
d18a512a | 7953 | block_name = NULL; |
7954 | break; | |
7955 | ||
7956 | case COMP_CONTAINS: | |
7957 | case COMP_DERIVED_CONTAINS: | |
4ee9c684 | 7958 | state = gfc_state_stack->previous->state; |
1a9745d2 | 7959 | block_name = gfc_state_stack->previous->sym == NULL |
7960 | ? NULL : gfc_state_stack->previous->sym->name; | |
6ade726e | 7961 | abreviated_modproc_decl = gfc_state_stack->previous->sym |
7962 | && gfc_state_stack->previous->sym->abr_modproc_decl; | |
d18a512a | 7963 | break; |
7964 | ||
7965 | default: | |
7966 | break; | |
4ee9c684 | 7967 | } |
7968 | ||
6ade726e | 7969 | if (!abreviated_modproc_decl) |
7970 | abreviated_modproc_decl = gfc_current_block () | |
7971 | && gfc_current_block ()->abr_modproc_decl; | |
4b8eb6ca | 7972 | |
4ee9c684 | 7973 | switch (state) |
7974 | { | |
7975 | case COMP_NONE: | |
7976 | case COMP_PROGRAM: | |
7977 | *st = ST_END_PROGRAM; | |
7978 | target = " program"; | |
c0985832 | 7979 | eos_ok = 1; |
4ee9c684 | 7980 | break; |
7981 | ||
7982 | case COMP_SUBROUTINE: | |
7983 | *st = ST_END_SUBROUTINE; | |
4b8eb6ca | 7984 | if (!abreviated_modproc_decl) |
4ee9c684 | 7985 | target = " subroutine"; |
4b8eb6ca | 7986 | else |
7987 | target = " procedure"; | |
c0985832 | 7988 | eos_ok = !contained_procedure (); |
4ee9c684 | 7989 | break; |
7990 | ||
7991 | case COMP_FUNCTION: | |
7992 | *st = ST_END_FUNCTION; | |
4b8eb6ca | 7993 | if (!abreviated_modproc_decl) |
4ee9c684 | 7994 | target = " function"; |
4b8eb6ca | 7995 | else |
7996 | target = " procedure"; | |
c0985832 | 7997 | eos_ok = !contained_procedure (); |
4ee9c684 | 7998 | break; |
7999 | ||
8000 | case COMP_BLOCK_DATA: | |
8001 | *st = ST_END_BLOCK_DATA; | |
8002 | target = " block data"; | |
c0985832 | 8003 | eos_ok = 1; |
4ee9c684 | 8004 | break; |
8005 | ||
8006 | case COMP_MODULE: | |
8007 | *st = ST_END_MODULE; | |
8008 | target = " module"; | |
c0985832 | 8009 | eos_ok = 1; |
4ee9c684 | 8010 | break; |
8011 | ||
4b8eb6ca | 8012 | case COMP_SUBMODULE: |
8013 | *st = ST_END_SUBMODULE; | |
8014 | target = " submodule"; | |
8015 | eos_ok = 1; | |
8016 | break; | |
8017 | ||
4ee9c684 | 8018 | case COMP_INTERFACE: |
8019 | *st = ST_END_INTERFACE; | |
8020 | target = " interface"; | |
c0985832 | 8021 | eos_ok = 0; |
4ee9c684 | 8022 | break; |
8023 | ||
d7cd448a | 8024 | case COMP_MAP: |
8025 | *st = ST_END_MAP; | |
8026 | target = " map"; | |
8027 | eos_ok = 0; | |
8028 | break; | |
8029 | ||
8030 | case COMP_UNION: | |
8031 | *st = ST_END_UNION; | |
8032 | target = " union"; | |
8033 | eos_ok = 0; | |
8034 | break; | |
8035 | ||
8036 | case COMP_STRUCTURE: | |
8037 | *st = ST_END_STRUCTURE; | |
8038 | target = " structure"; | |
8039 | eos_ok = 0; | |
8040 | break; | |
8041 | ||
4ee9c684 | 8042 | case COMP_DERIVED: |
7fd88f6e | 8043 | case COMP_DERIVED_CONTAINS: |
4ee9c684 | 8044 | *st = ST_END_TYPE; |
8045 | target = " type"; | |
c0985832 | 8046 | eos_ok = 0; |
4ee9c684 | 8047 | break; |
8048 | ||
d18a512a | 8049 | case COMP_ASSOCIATE: |
8050 | *st = ST_END_ASSOCIATE; | |
8051 | target = " associate"; | |
8052 | eos_ok = 0; | |
8053 | break; | |
8054 | ||
6a7084d7 | 8055 | case COMP_BLOCK: |
8056 | *st = ST_END_BLOCK; | |
8057 | target = " block"; | |
8058 | eos_ok = 0; | |
8059 | break; | |
8060 | ||
4ee9c684 | 8061 | case COMP_IF: |
8062 | *st = ST_ENDIF; | |
8063 | target = " if"; | |
c0985832 | 8064 | eos_ok = 0; |
4ee9c684 | 8065 | break; |
8066 | ||
8067 | case COMP_DO: | |
55ea8666 | 8068 | case COMP_DO_CONCURRENT: |
4ee9c684 | 8069 | *st = ST_ENDDO; |
8070 | target = " do"; | |
c0985832 | 8071 | eos_ok = 0; |
4ee9c684 | 8072 | break; |
8073 | ||
c6cd3066 | 8074 | case COMP_CRITICAL: |
8075 | *st = ST_END_CRITICAL; | |
8076 | target = " critical"; | |
8077 | eos_ok = 0; | |
8078 | break; | |
8079 | ||
4ee9c684 | 8080 | case COMP_SELECT: |
1de1b1a9 | 8081 | case COMP_SELECT_TYPE: |
4ee9c684 | 8082 | *st = ST_END_SELECT; |
8083 | target = " select"; | |
c0985832 | 8084 | eos_ok = 0; |
4ee9c684 | 8085 | break; |
8086 | ||
8087 | case COMP_FORALL: | |
8088 | *st = ST_END_FORALL; | |
8089 | target = " forall"; | |
c0985832 | 8090 | eos_ok = 0; |
4ee9c684 | 8091 | break; |
8092 | ||
8093 | case COMP_WHERE: | |
8094 | *st = ST_END_WHERE; | |
8095 | target = " where"; | |
c0985832 | 8096 | eos_ok = 0; |
4ee9c684 | 8097 | break; |
8098 | ||
3b6a4b41 | 8099 | case COMP_ENUM: |
8100 | *st = ST_END_ENUM; | |
8101 | target = " enum"; | |
8102 | eos_ok = 0; | |
8103 | last_initializer = NULL; | |
8104 | set_enum_kind (); | |
8105 | gfc_free_enum_history (); | |
8106 | break; | |
8107 | ||
4ee9c684 | 8108 | default: |
8109 | gfc_error ("Unexpected END statement at %C"); | |
8110 | goto cleanup; | |
8111 | } | |
8112 | ||
8d779aef | 8113 | old_loc = gfc_current_locus; |
4ee9c684 | 8114 | if (gfc_match_eos () == MATCH_YES) |
8115 | { | |
4b20e9cf | 8116 | if (!eos_ok && (*st == ST_END_SUBROUTINE || *st == ST_END_FUNCTION)) |
8117 | { | |
60e19868 | 8118 | if (!gfc_notify_std (GFC_STD_F2008, "END statement " |
76e207a9 | 8119 | "instead of %s statement at %L", |
4b8eb6ca | 8120 | abreviated_modproc_decl ? "END PROCEDURE" |
8121 | : gfc_ascii_statement(*st), &old_loc)) | |
4b20e9cf | 8122 | goto cleanup; |
8123 | } | |
8124 | else if (!eos_ok) | |
4ee9c684 | 8125 | { |
f6d0e37a | 8126 | /* We would have required END [something]. */ |
d197c9ee | 8127 | gfc_error ("%s statement expected at %L", |
8128 | gfc_ascii_statement (*st), &old_loc); | |
4ee9c684 | 8129 | goto cleanup; |
8130 | } | |
8131 | ||
8132 | return MATCH_YES; | |
8133 | } | |
8134 | ||
8135 | /* Verify that we've got the sort of end-block that we're expecting. */ | |
8136 | if (gfc_match (target) != MATCH_YES) | |
8137 | { | |
4b8eb6ca | 8138 | gfc_error ("Expecting %s statement at %L", abreviated_modproc_decl |
8139 | ? "END PROCEDURE" : gfc_ascii_statement(*st), &old_loc); | |
4ee9c684 | 8140 | goto cleanup; |
8141 | } | |
cc7124a6 | 8142 | else |
8143 | got_matching_end = true; | |
4ee9c684 | 8144 | |
8d779aef | 8145 | old_loc = gfc_current_locus; |
4ee9c684 | 8146 | /* If we're at the end, make sure a block name wasn't required. */ |
8147 | if (gfc_match_eos () == MATCH_YES) | |
8148 | { | |
8149 | ||
0d0ce415 | 8150 | if (*st != ST_ENDDO && *st != ST_ENDIF && *st != ST_END_SELECT |
c6cd3066 | 8151 | && *st != ST_END_FORALL && *st != ST_END_WHERE && *st != ST_END_BLOCK |
d18a512a | 8152 | && *st != ST_END_ASSOCIATE && *st != ST_END_CRITICAL) |
4ee9c684 | 8153 | return MATCH_YES; |
8154 | ||
6a7084d7 | 8155 | if (!block_name) |
4ee9c684 | 8156 | return MATCH_YES; |
8157 | ||
716da296 | 8158 | gfc_error ("Expected block name of %qs in %s statement at %L", |
8d779aef | 8159 | block_name, gfc_ascii_statement (*st), &old_loc); |
4ee9c684 | 8160 | |
8161 | return MATCH_ERROR; | |
8162 | } | |
8163 | ||
8164 | /* END INTERFACE has a special handler for its several possible endings. */ | |
8165 | if (*st == ST_END_INTERFACE) | |
8166 | return gfc_match_end_interface (); | |
8167 | ||
f6d0e37a | 8168 | /* We haven't hit the end of statement, so what is left must be an |
8169 | end-name. */ | |
4ee9c684 | 8170 | m = gfc_match_space (); |
8171 | if (m == MATCH_YES) | |
8172 | m = gfc_match_name (name); | |
8173 | ||
8174 | if (m == MATCH_NO) | |
8175 | gfc_error ("Expected terminating name at %C"); | |
8176 | if (m != MATCH_YES) | |
8177 | goto cleanup; | |
8178 | ||
8179 | if (block_name == NULL) | |
8180 | goto syntax; | |
8181 | ||
df8f279f | 8182 | /* We have to pick out the declared submodule name from the composite |
8183 | required by F2008:11.2.3 para 2, which ends in the declared name. */ | |
8184 | if (state == COMP_SUBMODULE) | |
8185 | block_name = strchr (block_name, '.') + 1; | |
8186 | ||
1e057e9b | 8187 | if (strcmp (name, block_name) != 0 && strcmp (block_name, "ppr@") != 0) |
4ee9c684 | 8188 | { |
716da296 | 8189 | gfc_error ("Expected label %qs for %s statement at %C", block_name, |
4ee9c684 | 8190 | gfc_ascii_statement (*st)); |
8191 | goto cleanup; | |
8192 | } | |
1e057e9b | 8193 | /* Procedure pointer as function result. */ |
8194 | else if (strcmp (block_name, "ppr@") == 0 | |
8195 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) != 0) | |
8196 | { | |
716da296 | 8197 | gfc_error ("Expected label %qs for %s statement at %C", |
1e057e9b | 8198 | gfc_current_block ()->ns->proc_name->name, |
8199 | gfc_ascii_statement (*st)); | |
8200 | goto cleanup; | |
8201 | } | |
4ee9c684 | 8202 | |
8203 | if (gfc_match_eos () == MATCH_YES) | |
8204 | return MATCH_YES; | |
8205 | ||
8206 | syntax: | |
8207 | gfc_syntax_error (*st); | |
8208 | ||
8209 | cleanup: | |
cbb9e6aa | 8210 | gfc_current_locus = old_loc; |
9e5e87d9 | 8211 | |
8212 | /* If we are missing an END BLOCK, we created a half-ready namespace. | |
8213 | Remove it from the parent namespace's sibling list. */ | |
8214 | ||
cc7124a6 | 8215 | while (state == COMP_BLOCK && !got_matching_end) |
9e5e87d9 | 8216 | { |
8217 | parent_ns = gfc_current_ns->parent; | |
8218 | ||
8219 | nsp = &(gfc_state_stack->previous->tail->ext.block.ns); | |
8220 | ||
8221 | prev_ns = NULL; | |
8222 | ns = *nsp; | |
8223 | while (ns) | |
8224 | { | |
8225 | if (ns == gfc_current_ns) | |
8226 | { | |
8227 | if (prev_ns == NULL) | |
8228 | *nsp = NULL; | |
8229 | else | |
8230 | prev_ns->sibling = ns->sibling; | |
8231 | } | |
8232 | prev_ns = ns; | |
8233 | ns = ns->sibling; | |
8234 | } | |
cc7124a6 | 8235 | |
9e5e87d9 | 8236 | gfc_free_namespace (gfc_current_ns); |
8237 | gfc_current_ns = parent_ns; | |
8097c1a6 | 8238 | gfc_state_stack = gfc_state_stack->previous; |
8239 | state = gfc_current_state (); | |
9e5e87d9 | 8240 | } |
8241 | ||
4ee9c684 | 8242 | return MATCH_ERROR; |
8243 | } | |
8244 | ||
8245 | ||
8246 | ||
8247 | /***************** Attribute declaration statements ****************/ | |
8248 | ||
8249 | /* Set the attribute of a single variable. */ | |
8250 | ||
8251 | static match | |
8252 | attr_decl1 (void) | |
8253 | { | |
8254 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8255 | gfc_array_spec *as; | |
75e5ecf3 | 8256 | |
8257 | /* Workaround -Wmaybe-uninitialized false positive during | |
8258 | profiledbootstrap by initializing them. */ | |
8259 | gfc_symbol *sym = NULL; | |
4ee9c684 | 8260 | locus var_locus; |
8261 | match m; | |
8262 | ||
8263 | as = NULL; | |
8264 | ||
8265 | m = gfc_match_name (name); | |
8266 | if (m != MATCH_YES) | |
8267 | goto cleanup; | |
8268 | ||
36b0a1b0 | 8269 | if (find_special (name, &sym, false)) |
4ee9c684 | 8270 | return MATCH_ERROR; |
8271 | ||
60e19868 | 8272 | if (!check_function_name (name)) |
f3e89339 | 8273 | { |
8274 | m = MATCH_ERROR; | |
8275 | goto cleanup; | |
8276 | } | |
8db94b3b | 8277 | |
cbb9e6aa | 8278 | var_locus = gfc_current_locus; |
4ee9c684 | 8279 | |
8280 | /* Deal with possible array specification for certain attributes. */ | |
8281 | if (current_attr.dimension | |
aff518b0 | 8282 | || current_attr.codimension |
4ee9c684 | 8283 | || current_attr.allocatable |
8284 | || current_attr.pointer | |
8285 | || current_attr.target) | |
8286 | { | |
aff518b0 | 8287 | m = gfc_match_array_spec (&as, !current_attr.codimension, |
8288 | !current_attr.dimension | |
8289 | && !current_attr.pointer | |
8290 | && !current_attr.target); | |
4ee9c684 | 8291 | if (m == MATCH_ERROR) |
8292 | goto cleanup; | |
8293 | ||
8294 | if (current_attr.dimension && m == MATCH_NO) | |
8295 | { | |
1a9745d2 | 8296 | gfc_error ("Missing array specification at %L in DIMENSION " |
8297 | "statement", &var_locus); | |
4ee9c684 | 8298 | m = MATCH_ERROR; |
8299 | goto cleanup; | |
8300 | } | |
8301 | ||
13aebeb0 | 8302 | if (current_attr.dimension && sym->value) |
8303 | { | |
8304 | gfc_error ("Dimensions specified for %s at %L after its " | |
d0abd9e0 | 8305 | "initialization", sym->name, &var_locus); |
13aebeb0 | 8306 | m = MATCH_ERROR; |
8307 | goto cleanup; | |
8308 | } | |
8309 | ||
aff518b0 | 8310 | if (current_attr.codimension && m == MATCH_NO) |
8311 | { | |
8312 | gfc_error ("Missing array specification at %L in CODIMENSION " | |
8313 | "statement", &var_locus); | |
8314 | m = MATCH_ERROR; | |
8315 | goto cleanup; | |
8316 | } | |
8317 | ||
4ee9c684 | 8318 | if ((current_attr.allocatable || current_attr.pointer) |
8319 | && (m == MATCH_YES) && (as->type != AS_DEFERRED)) | |
8320 | { | |
1a9745d2 | 8321 | gfc_error ("Array specification must be deferred at %L", &var_locus); |
4ee9c684 | 8322 | m = MATCH_ERROR; |
8323 | goto cleanup; | |
8324 | } | |
8325 | } | |
8326 | ||
b3704193 | 8327 | /* Update symbol table. DIMENSION attribute is set in |
8328 | gfc_set_array_spec(). For CLASS variables, this must be applied | |
607ae689 | 8329 | to the first component, or '_data' field. */ |
a33fbb6f | 8330 | if (sym->ts.type == BT_CLASS && sym->ts.u.derived->attr.is_class) |
4ee9c684 | 8331 | { |
60e19868 | 8332 | if (!gfc_copy_attr (&CLASS_DATA(sym)->attr, ¤t_attr, &var_locus)) |
b3704193 | 8333 | { |
8334 | m = MATCH_ERROR; | |
8335 | goto cleanup; | |
8336 | } | |
b3704193 | 8337 | } |
8338 | else | |
8339 | { | |
aff518b0 | 8340 | if (current_attr.dimension == 0 && current_attr.codimension == 0 |
60e19868 | 8341 | && !gfc_copy_attr (&sym->attr, ¤t_attr, &var_locus)) |
b3704193 | 8342 | { |
8343 | m = MATCH_ERROR; | |
8344 | goto cleanup; | |
8345 | } | |
4ee9c684 | 8346 | } |
8db94b3b | 8347 | |
fa102e56 | 8348 | if (sym->ts.type == BT_CLASS |
e8393d49 | 8349 | && !gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as)) |
29dae2bf | 8350 | { |
8351 | m = MATCH_ERROR; | |
8352 | goto cleanup; | |
8353 | } | |
4ee9c684 | 8354 | |
60e19868 | 8355 | if (!gfc_set_array_spec (sym, as, &var_locus)) |
4ee9c684 | 8356 | { |
8357 | m = MATCH_ERROR; | |
8358 | goto cleanup; | |
8359 | } | |
e14bee04 | 8360 | |
b549d2a5 | 8361 | if (sym->attr.cray_pointee && sym->as != NULL) |
8362 | { | |
8363 | /* Fix the array spec. */ | |
8db94b3b | 8364 | m = gfc_mod_pointee_as (sym->as); |
b549d2a5 | 8365 | if (m == MATCH_ERROR) |
8366 | goto cleanup; | |
8367 | } | |
4ee9c684 | 8368 | |
60e19868 | 8369 | if (!gfc_add_attribute (&sym->attr, &var_locus)) |
14efb9b7 | 8370 | { |
8371 | m = MATCH_ERROR; | |
8372 | goto cleanup; | |
8373 | } | |
8374 | ||
4ee9c684 | 8375 | if ((current_attr.external || current_attr.intrinsic) |
8376 | && sym->attr.flavor != FL_PROCEDURE | |
60e19868 | 8377 | && !gfc_add_flavor (&sym->attr, FL_PROCEDURE, sym->name, NULL)) |
4ee9c684 | 8378 | { |
8379 | m = MATCH_ERROR; | |
8380 | goto cleanup; | |
8381 | } | |
8382 | ||
1e057e9b | 8383 | add_hidden_procptr_result (sym); |
8384 | ||
4ee9c684 | 8385 | return MATCH_YES; |
8386 | ||
8387 | cleanup: | |
8388 | gfc_free_array_spec (as); | |
8389 | return m; | |
8390 | } | |
8391 | ||
8392 | ||
8393 | /* Generic attribute declaration subroutine. Used for attributes that | |
8394 | just have a list of names. */ | |
8395 | ||
8396 | static match | |
8397 | attr_decl (void) | |
8398 | { | |
8399 | match m; | |
8400 | ||
8401 | /* Gobble the optional double colon, by simply ignoring the result | |
8402 | of gfc_match(). */ | |
8403 | gfc_match (" ::"); | |
8404 | ||
8405 | for (;;) | |
8406 | { | |
8407 | m = attr_decl1 (); | |
8408 | if (m != MATCH_YES) | |
8409 | break; | |
8410 | ||
8411 | if (gfc_match_eos () == MATCH_YES) | |
8412 | { | |
8413 | m = MATCH_YES; | |
8414 | break; | |
8415 | } | |
8416 | ||
8417 | if (gfc_match_char (',') != MATCH_YES) | |
8418 | { | |
8419 | gfc_error ("Unexpected character in variable list at %C"); | |
8420 | m = MATCH_ERROR; | |
8421 | break; | |
8422 | } | |
8423 | } | |
8424 | ||
8425 | return m; | |
8426 | } | |
8427 | ||
8428 | ||
b549d2a5 | 8429 | /* This routine matches Cray Pointer declarations of the form: |
8430 | pointer ( <pointer>, <pointee> ) | |
8431 | or | |
e14bee04 | 8432 | pointer ( <pointer1>, <pointee1> ), ( <pointer2>, <pointee2> ), ... |
8433 | The pointer, if already declared, should be an integer. Otherwise, we | |
b549d2a5 | 8434 | set it as BT_INTEGER with kind gfc_index_integer_kind. The pointee may |
8435 | be either a scalar, or an array declaration. No space is allocated for | |
e14bee04 | 8436 | the pointee. For the statement |
b549d2a5 | 8437 | pointer (ipt, ar(10)) |
8438 | any subsequent uses of ar will be translated (in C-notation) as | |
e14bee04 | 8439 | ar(i) => ((<type> *) ipt)(i) |
b7bf3f81 | 8440 | After gimplification, pointee variable will disappear in the code. */ |
b549d2a5 | 8441 | |
8442 | static match | |
8443 | cray_pointer_decl (void) | |
8444 | { | |
8445 | match m; | |
aff518b0 | 8446 | gfc_array_spec *as = NULL; |
b549d2a5 | 8447 | gfc_symbol *cptr; /* Pointer symbol. */ |
8448 | gfc_symbol *cpte; /* Pointee symbol. */ | |
8449 | locus var_locus; | |
8450 | bool done = false; | |
8451 | ||
8452 | while (!done) | |
8453 | { | |
8454 | if (gfc_match_char ('(') != MATCH_YES) | |
8455 | { | |
0d2b3c9c | 8456 | gfc_error ("Expected %<(%> at %C"); |
e14bee04 | 8457 | return MATCH_ERROR; |
b549d2a5 | 8458 | } |
e14bee04 | 8459 | |
b549d2a5 | 8460 | /* Match pointer. */ |
8461 | var_locus = gfc_current_locus; | |
8462 | gfc_clear_attr (¤t_attr); | |
8463 | gfc_add_cray_pointer (¤t_attr, &var_locus); | |
8464 | current_ts.type = BT_INTEGER; | |
8465 | current_ts.kind = gfc_index_integer_kind; | |
8466 | ||
e14bee04 | 8467 | m = gfc_match_symbol (&cptr, 0); |
b549d2a5 | 8468 | if (m != MATCH_YES) |
8469 | { | |
8470 | gfc_error ("Expected variable name at %C"); | |
8471 | return m; | |
8472 | } | |
e14bee04 | 8473 | |
60e19868 | 8474 | if (!gfc_add_cray_pointer (&cptr->attr, &var_locus)) |
b549d2a5 | 8475 | return MATCH_ERROR; |
8476 | ||
e14bee04 | 8477 | gfc_set_sym_referenced (cptr); |
b549d2a5 | 8478 | |
8479 | if (cptr->ts.type == BT_UNKNOWN) /* Override the type, if necessary. */ | |
8480 | { | |
8481 | cptr->ts.type = BT_INTEGER; | |
e14bee04 | 8482 | cptr->ts.kind = gfc_index_integer_kind; |
b549d2a5 | 8483 | } |
8484 | else if (cptr->ts.type != BT_INTEGER) | |
8485 | { | |
7698a624 | 8486 | gfc_error ("Cray pointer at %C must be an integer"); |
b549d2a5 | 8487 | return MATCH_ERROR; |
8488 | } | |
8489 | else if (cptr->ts.kind < gfc_index_integer_kind) | |
6f521718 | 8490 | gfc_warning (0, "Cray pointer at %C has %d bytes of precision;" |
7698a624 | 8491 | " memory addresses require %d bytes", |
1a9745d2 | 8492 | cptr->ts.kind, gfc_index_integer_kind); |
b549d2a5 | 8493 | |
8494 | if (gfc_match_char (',') != MATCH_YES) | |
8495 | { | |
8496 | gfc_error ("Expected \",\" at %C"); | |
e14bee04 | 8497 | return MATCH_ERROR; |
b549d2a5 | 8498 | } |
8499 | ||
e14bee04 | 8500 | /* Match Pointee. */ |
b549d2a5 | 8501 | var_locus = gfc_current_locus; |
8502 | gfc_clear_attr (¤t_attr); | |
8503 | gfc_add_cray_pointee (¤t_attr, &var_locus); | |
8504 | current_ts.type = BT_UNKNOWN; | |
8505 | current_ts.kind = 0; | |
8506 | ||
8507 | m = gfc_match_symbol (&cpte, 0); | |
8508 | if (m != MATCH_YES) | |
8509 | { | |
8510 | gfc_error ("Expected variable name at %C"); | |
8511 | return m; | |
8512 | } | |
e14bee04 | 8513 | |
b549d2a5 | 8514 | /* Check for an optional array spec. */ |
aff518b0 | 8515 | m = gfc_match_array_spec (&as, true, false); |
b549d2a5 | 8516 | if (m == MATCH_ERROR) |
8517 | { | |
8518 | gfc_free_array_spec (as); | |
8519 | return m; | |
8520 | } | |
8521 | else if (m == MATCH_NO) | |
8522 | { | |
8523 | gfc_free_array_spec (as); | |
8524 | as = NULL; | |
8db94b3b | 8525 | } |
b549d2a5 | 8526 | |
60e19868 | 8527 | if (!gfc_add_cray_pointee (&cpte->attr, &var_locus)) |
b549d2a5 | 8528 | return MATCH_ERROR; |
8529 | ||
8530 | gfc_set_sym_referenced (cpte); | |
8531 | ||
8532 | if (cpte->as == NULL) | |
8533 | { | |
60e19868 | 8534 | if (!gfc_set_array_spec (cpte, as, &var_locus)) |
b549d2a5 | 8535 | gfc_internal_error ("Couldn't set Cray pointee array spec."); |
8536 | } | |
8537 | else if (as != NULL) | |
8538 | { | |
7698a624 | 8539 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
b549d2a5 | 8540 | gfc_free_array_spec (as); |
8541 | return MATCH_ERROR; | |
8542 | } | |
8db94b3b | 8543 | |
b549d2a5 | 8544 | as = NULL; |
8db94b3b | 8545 | |
b549d2a5 | 8546 | if (cpte->as != NULL) |
8547 | { | |
8548 | /* Fix array spec. */ | |
8549 | m = gfc_mod_pointee_as (cpte->as); | |
8550 | if (m == MATCH_ERROR) | |
8551 | return m; | |
8db94b3b | 8552 | } |
8553 | ||
b549d2a5 | 8554 | /* Point the Pointee at the Pointer. */ |
b7bf3f81 | 8555 | cpte->cp_pointer = cptr; |
b549d2a5 | 8556 | |
8557 | if (gfc_match_char (')') != MATCH_YES) | |
8558 | { | |
8559 | gfc_error ("Expected \")\" at %C"); | |
8db94b3b | 8560 | return MATCH_ERROR; |
b549d2a5 | 8561 | } |
8562 | m = gfc_match_char (','); | |
8563 | if (m != MATCH_YES) | |
8564 | done = true; /* Stop searching for more declarations. */ | |
8565 | ||
8566 | } | |
8db94b3b | 8567 | |
b549d2a5 | 8568 | if (m == MATCH_ERROR /* Failed when trying to find ',' above. */ |
8569 | || gfc_match_eos () != MATCH_YES) | |
8570 | { | |
0d2b3c9c | 8571 | gfc_error ("Expected %<,%> or end of statement at %C"); |
b549d2a5 | 8572 | return MATCH_ERROR; |
8573 | } | |
8574 | return MATCH_YES; | |
8575 | } | |
8576 | ||
8577 | ||
4ee9c684 | 8578 | match |
8579 | gfc_match_external (void) | |
8580 | { | |
8581 | ||
8582 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 8583 | current_attr.external = 1; |
4ee9c684 | 8584 | |
8585 | return attr_decl (); | |
8586 | } | |
8587 | ||
8588 | ||
4ee9c684 | 8589 | match |
8590 | gfc_match_intent (void) | |
8591 | { | |
8592 | sym_intent intent; | |
8593 | ||
6a7084d7 | 8594 | /* This is not allowed within a BLOCK construct! */ |
8595 | if (gfc_current_state () == COMP_BLOCK) | |
8596 | { | |
8597 | gfc_error ("INTENT is not allowed inside of BLOCK at %C"); | |
8598 | return MATCH_ERROR; | |
8599 | } | |
8600 | ||
4ee9c684 | 8601 | intent = match_intent_spec (); |
8602 | if (intent == INTENT_UNKNOWN) | |
8603 | return MATCH_ERROR; | |
8604 | ||
8605 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 8606 | current_attr.intent = intent; |
4ee9c684 | 8607 | |
8608 | return attr_decl (); | |
8609 | } | |
8610 | ||
8611 | ||
8612 | match | |
8613 | gfc_match_intrinsic (void) | |
8614 | { | |
8615 | ||
8616 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 8617 | current_attr.intrinsic = 1; |
4ee9c684 | 8618 | |
8619 | return attr_decl (); | |
8620 | } | |
8621 | ||
8622 | ||
8623 | match | |
8624 | gfc_match_optional (void) | |
8625 | { | |
6a7084d7 | 8626 | /* This is not allowed within a BLOCK construct! */ |
8627 | if (gfc_current_state () == COMP_BLOCK) | |
8628 | { | |
8629 | gfc_error ("OPTIONAL is not allowed inside of BLOCK at %C"); | |
8630 | return MATCH_ERROR; | |
8631 | } | |
4ee9c684 | 8632 | |
8633 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 8634 | current_attr.optional = 1; |
4ee9c684 | 8635 | |
8636 | return attr_decl (); | |
8637 | } | |
8638 | ||
8639 | ||
8640 | match | |
8641 | gfc_match_pointer (void) | |
8642 | { | |
b549d2a5 | 8643 | gfc_gobble_whitespace (); |
e0be6f02 | 8644 | if (gfc_peek_ascii_char () == '(') |
b549d2a5 | 8645 | { |
829d7a08 | 8646 | if (!flag_cray_pointer) |
b549d2a5 | 8647 | { |
1a9745d2 | 8648 | gfc_error ("Cray pointer declaration at %C requires -fcray-pointer " |
8649 | "flag"); | |
b549d2a5 | 8650 | return MATCH_ERROR; |
8651 | } | |
8652 | return cray_pointer_decl (); | |
8653 | } | |
8654 | else | |
8655 | { | |
8656 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 8657 | current_attr.pointer = 1; |
8db94b3b | 8658 | |
b549d2a5 | 8659 | return attr_decl (); |
8660 | } | |
4ee9c684 | 8661 | } |
8662 | ||
8663 | ||
8664 | match | |
8665 | gfc_match_allocatable (void) | |
8666 | { | |
4ee9c684 | 8667 | gfc_clear_attr (¤t_attr); |
14efb9b7 | 8668 | current_attr.allocatable = 1; |
4ee9c684 | 8669 | |
8670 | return attr_decl (); | |
8671 | } | |
8672 | ||
8673 | ||
aff518b0 | 8674 | match |
8675 | gfc_match_codimension (void) | |
8676 | { | |
8677 | gfc_clear_attr (¤t_attr); | |
8678 | current_attr.codimension = 1; | |
8679 | ||
8680 | return attr_decl (); | |
8681 | } | |
8682 | ||
8683 | ||
b3c3927c | 8684 | match |
8685 | gfc_match_contiguous (void) | |
8686 | { | |
60e19868 | 8687 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS statement at %C")) |
b3c3927c | 8688 | return MATCH_ERROR; |
8689 | ||
8690 | gfc_clear_attr (¤t_attr); | |
8691 | current_attr.contiguous = 1; | |
8692 | ||
8693 | return attr_decl (); | |
8694 | } | |
8695 | ||
8696 | ||
4ee9c684 | 8697 | match |
8698 | gfc_match_dimension (void) | |
8699 | { | |
4ee9c684 | 8700 | gfc_clear_attr (¤t_attr); |
14efb9b7 | 8701 | current_attr.dimension = 1; |
4ee9c684 | 8702 | |
8703 | return attr_decl (); | |
8704 | } | |
8705 | ||
8706 | ||
8707 | match | |
8708 | gfc_match_target (void) | |
8709 | { | |
4ee9c684 | 8710 | gfc_clear_attr (¤t_attr); |
14efb9b7 | 8711 | current_attr.target = 1; |
4ee9c684 | 8712 | |
8713 | return attr_decl (); | |
8714 | } | |
8715 | ||
8716 | ||
8717 | /* Match the list of entities being specified in a PUBLIC or PRIVATE | |
8718 | statement. */ | |
8719 | ||
8720 | static match | |
8721 | access_attr_decl (gfc_statement st) | |
8722 | { | |
8723 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8724 | interface_type type; | |
8725 | gfc_user_op *uop; | |
c2958b6b | 8726 | gfc_symbol *sym, *dt_sym; |
dcb1b019 | 8727 | gfc_intrinsic_op op; |
4ee9c684 | 8728 | match m; |
8729 | ||
8730 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8731 | goto done; | |
8732 | ||
8733 | for (;;) | |
8734 | { | |
dcb1b019 | 8735 | m = gfc_match_generic_spec (&type, name, &op); |
4ee9c684 | 8736 | if (m == MATCH_NO) |
8737 | goto syntax; | |
8738 | if (m == MATCH_ERROR) | |
8739 | return MATCH_ERROR; | |
8740 | ||
8741 | switch (type) | |
8742 | { | |
8743 | case INTERFACE_NAMELESS: | |
94fa7146 | 8744 | case INTERFACE_ABSTRACT: |
4ee9c684 | 8745 | goto syntax; |
8746 | ||
8747 | case INTERFACE_GENERIC: | |
9f732c4e | 8748 | case INTERFACE_DTIO: |
2f78ea2e | 8749 | |
4ee9c684 | 8750 | if (gfc_get_symbol (name, NULL, &sym)) |
8751 | goto done; | |
8752 | ||
7966c683 | 8753 | if (type == INTERFACE_DTIO |
8754 | && gfc_current_ns->proc_name | |
8755 | && gfc_current_ns->proc_name->attr.flavor == FL_MODULE | |
8756 | && sym->attr.flavor == FL_UNKNOWN) | |
8757 | sym->attr.flavor = FL_PROCEDURE; | |
8758 | ||
76e207a9 | 8759 | if (!gfc_add_access (&sym->attr, |
8760 | (st == ST_PUBLIC) | |
8761 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
60e19868 | 8762 | sym->name, NULL)) |
4ee9c684 | 8763 | return MATCH_ERROR; |
8764 | ||
c2958b6b | 8765 | if (sym->attr.generic && (dt_sym = gfc_find_dt_in_generic (sym)) |
76e207a9 | 8766 | && !gfc_add_access (&dt_sym->attr, |
8767 | (st == ST_PUBLIC) | |
8768 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
60e19868 | 8769 | sym->name, NULL)) |
c2958b6b | 8770 | return MATCH_ERROR; |
8771 | ||
4ee9c684 | 8772 | break; |
8773 | ||
8774 | case INTERFACE_INTRINSIC_OP: | |
dcb1b019 | 8775 | if (gfc_current_ns->operator_access[op] == ACCESS_UNKNOWN) |
4ee9c684 | 8776 | { |
0c482c1d | 8777 | gfc_intrinsic_op other_op; |
8778 | ||
dcb1b019 | 8779 | gfc_current_ns->operator_access[op] = |
4ee9c684 | 8780 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; |
0c482c1d | 8781 | |
8782 | /* Handle the case if there is another op with the same | |
8783 | function, for INTRINSIC_EQ vs. INTRINSIC_EQ_OS and so on. */ | |
8784 | other_op = gfc_equivalent_op (op); | |
8785 | ||
8786 | if (other_op != INTRINSIC_NONE) | |
8787 | gfc_current_ns->operator_access[other_op] = | |
8788 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
8789 | ||
4ee9c684 | 8790 | } |
8791 | else | |
8792 | { | |
8793 | gfc_error ("Access specification of the %s operator at %C has " | |
dcb1b019 | 8794 | "already been specified", gfc_op2string (op)); |
4ee9c684 | 8795 | goto done; |
8796 | } | |
8797 | ||
8798 | break; | |
8799 | ||
8800 | case INTERFACE_USER_OP: | |
8801 | uop = gfc_get_uop (name); | |
8802 | ||
8803 | if (uop->access == ACCESS_UNKNOWN) | |
8804 | { | |
1a9745d2 | 8805 | uop->access = (st == ST_PUBLIC) |
8806 | ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
4ee9c684 | 8807 | } |
8808 | else | |
8809 | { | |
1a9745d2 | 8810 | gfc_error ("Access specification of the .%s. operator at %C " |
8811 | "has already been specified", sym->name); | |
4ee9c684 | 8812 | goto done; |
8813 | } | |
8814 | ||
8815 | break; | |
8816 | } | |
8817 | ||
8818 | if (gfc_match_char (',') == MATCH_NO) | |
8819 | break; | |
8820 | } | |
8821 | ||
8822 | if (gfc_match_eos () != MATCH_YES) | |
8823 | goto syntax; | |
8824 | return MATCH_YES; | |
8825 | ||
8826 | syntax: | |
8827 | gfc_syntax_error (st); | |
8828 | ||
8829 | done: | |
8830 | return MATCH_ERROR; | |
8831 | } | |
8832 | ||
8833 | ||
3ea52af3 | 8834 | match |
8835 | gfc_match_protected (void) | |
8836 | { | |
8837 | gfc_symbol *sym; | |
8838 | match m; | |
8839 | ||
54c0257b | 8840 | if (!gfc_current_ns->proc_name |
8841 | || gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
3ea52af3 | 8842 | { |
8843 | gfc_error ("PROTECTED at %C only allowed in specification " | |
8844 | "part of a module"); | |
8845 | return MATCH_ERROR; | |
8846 | ||
8847 | } | |
8848 | ||
60e19868 | 8849 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED statement at %C")) |
3ea52af3 | 8850 | return MATCH_ERROR; |
8851 | ||
8852 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8853 | { | |
8854 | return MATCH_ERROR; | |
8855 | } | |
8856 | ||
8857 | if (gfc_match_eos () == MATCH_YES) | |
8858 | goto syntax; | |
8859 | ||
8860 | for(;;) | |
8861 | { | |
8862 | m = gfc_match_symbol (&sym, 0); | |
8863 | switch (m) | |
8864 | { | |
8865 | case MATCH_YES: | |
60e19868 | 8866 | if (!gfc_add_protected (&sym->attr, sym->name, &gfc_current_locus)) |
3ea52af3 | 8867 | return MATCH_ERROR; |
8868 | goto next_item; | |
8869 | ||
8870 | case MATCH_NO: | |
8871 | break; | |
8872 | ||
8873 | case MATCH_ERROR: | |
8874 | return MATCH_ERROR; | |
8875 | } | |
8876 | ||
8877 | next_item: | |
8878 | if (gfc_match_eos () == MATCH_YES) | |
8879 | break; | |
8880 | if (gfc_match_char (',') != MATCH_YES) | |
8881 | goto syntax; | |
8882 | } | |
8883 | ||
8884 | return MATCH_YES; | |
8885 | ||
8886 | syntax: | |
8887 | gfc_error ("Syntax error in PROTECTED statement at %C"); | |
8888 | return MATCH_ERROR; | |
8889 | } | |
8890 | ||
8891 | ||
a0527218 | 8892 | /* The PRIVATE statement is a bit weird in that it can be an attribute |
69b1505f | 8893 | declaration, but also works as a standalone statement inside of a |
4ee9c684 | 8894 | type declaration or a module. */ |
8895 | ||
8896 | match | |
1a9745d2 | 8897 | gfc_match_private (gfc_statement *st) |
4ee9c684 | 8898 | { |
8899 | ||
8900 | if (gfc_match ("private") != MATCH_YES) | |
8901 | return MATCH_NO; | |
8902 | ||
e14bee04 | 8903 | if (gfc_current_state () != COMP_MODULE |
7fd88f6e | 8904 | && !(gfc_current_state () == COMP_DERIVED |
8905 | && gfc_state_stack->previous | |
8906 | && gfc_state_stack->previous->state == COMP_MODULE) | |
8907 | && !(gfc_current_state () == COMP_DERIVED_CONTAINS | |
8908 | && gfc_state_stack->previous && gfc_state_stack->previous->previous | |
8909 | && gfc_state_stack->previous->previous->state == COMP_MODULE)) | |
e14bee04 | 8910 | { |
8911 | gfc_error ("PRIVATE statement at %C is only allowed in the " | |
8912 | "specification part of a module"); | |
8913 | return MATCH_ERROR; | |
8914 | } | |
8915 | ||
4ee9c684 | 8916 | if (gfc_current_state () == COMP_DERIVED) |
8917 | { | |
8918 | if (gfc_match_eos () == MATCH_YES) | |
8919 | { | |
8920 | *st = ST_PRIVATE; | |
8921 | return MATCH_YES; | |
8922 | } | |
8923 | ||
8924 | gfc_syntax_error (ST_PRIVATE); | |
8925 | return MATCH_ERROR; | |
8926 | } | |
8927 | ||
8928 | if (gfc_match_eos () == MATCH_YES) | |
8929 | { | |
8930 | *st = ST_PRIVATE; | |
8931 | return MATCH_YES; | |
8932 | } | |
8933 | ||
8934 | *st = ST_ATTR_DECL; | |
8935 | return access_attr_decl (ST_PRIVATE); | |
8936 | } | |
8937 | ||
8938 | ||
8939 | match | |
1a9745d2 | 8940 | gfc_match_public (gfc_statement *st) |
4ee9c684 | 8941 | { |
8942 | ||
8943 | if (gfc_match ("public") != MATCH_YES) | |
8944 | return MATCH_NO; | |
8945 | ||
e14bee04 | 8946 | if (gfc_current_state () != COMP_MODULE) |
8947 | { | |
8948 | gfc_error ("PUBLIC statement at %C is only allowed in the " | |
8949 | "specification part of a module"); | |
8950 | return MATCH_ERROR; | |
8951 | } | |
8952 | ||
4ee9c684 | 8953 | if (gfc_match_eos () == MATCH_YES) |
8954 | { | |
8955 | *st = ST_PUBLIC; | |
8956 | return MATCH_YES; | |
8957 | } | |
8958 | ||
8959 | *st = ST_ATTR_DECL; | |
8960 | return access_attr_decl (ST_PUBLIC); | |
8961 | } | |
8962 | ||
8963 | ||
8964 | /* Workhorse for gfc_match_parameter. */ | |
8965 | ||
8966 | static match | |
8967 | do_parm (void) | |
8968 | { | |
8969 | gfc_symbol *sym; | |
8970 | gfc_expr *init; | |
8971 | match m; | |
60e19868 | 8972 | bool t; |
4ee9c684 | 8973 | |
8974 | m = gfc_match_symbol (&sym, 0); | |
8975 | if (m == MATCH_NO) | |
8976 | gfc_error ("Expected variable name at %C in PARAMETER statement"); | |
8977 | ||
8978 | if (m != MATCH_YES) | |
8979 | return m; | |
8980 | ||
8981 | if (gfc_match_char ('=') == MATCH_NO) | |
8982 | { | |
8983 | gfc_error ("Expected = sign in PARAMETER statement at %C"); | |
8984 | return MATCH_ERROR; | |
8985 | } | |
8986 | ||
8987 | m = gfc_match_init_expr (&init); | |
8988 | if (m == MATCH_NO) | |
8989 | gfc_error ("Expected expression at %C in PARAMETER statement"); | |
8990 | if (m != MATCH_YES) | |
8991 | return m; | |
8992 | ||
8993 | if (sym->ts.type == BT_UNKNOWN | |
60e19868 | 8994 | && !gfc_set_default_type (sym, 1, NULL)) |
4ee9c684 | 8995 | { |
8996 | m = MATCH_ERROR; | |
8997 | goto cleanup; | |
8998 | } | |
8999 | ||
60e19868 | 9000 | if (!gfc_check_assign_symbol (sym, NULL, init) |
9001 | || !gfc_add_flavor (&sym->attr, FL_PARAMETER, sym->name, NULL)) | |
4ee9c684 | 9002 | { |
9003 | m = MATCH_ERROR; | |
9004 | goto cleanup; | |
9005 | } | |
9006 | ||
13aebeb0 | 9007 | if (sym->value) |
9008 | { | |
9009 | gfc_error ("Initializing already initialized variable at %C"); | |
9010 | m = MATCH_ERROR; | |
9011 | goto cleanup; | |
9012 | } | |
9013 | ||
f16404e3 | 9014 | t = add_init_expr_to_sym (sym->name, &init, &gfc_current_locus); |
60e19868 | 9015 | return (t) ? MATCH_YES : MATCH_ERROR; |
4ee9c684 | 9016 | |
9017 | cleanup: | |
9018 | gfc_free_expr (init); | |
9019 | return m; | |
9020 | } | |
9021 | ||
9022 | ||
9023 | /* Match a parameter statement, with the weird syntax that these have. */ | |
9024 | ||
9025 | match | |
9026 | gfc_match_parameter (void) | |
9027 | { | |
2c628787 | 9028 | const char *term = " )%t"; |
4ee9c684 | 9029 | match m; |
9030 | ||
9031 | if (gfc_match_char ('(') == MATCH_NO) | |
2c628787 | 9032 | { |
9033 | /* With legacy PARAMETER statements, don't expect a terminating ')'. */ | |
9034 | if (!gfc_notify_std (GFC_STD_LEGACY, "PARAMETER without '()' at %C")) | |
9035 | return MATCH_NO; | |
9036 | term = " %t"; | |
9037 | } | |
4ee9c684 | 9038 | |
9039 | for (;;) | |
9040 | { | |
9041 | m = do_parm (); | |
9042 | if (m != MATCH_YES) | |
9043 | break; | |
9044 | ||
2c628787 | 9045 | if (gfc_match (term) == MATCH_YES) |
4ee9c684 | 9046 | break; |
9047 | ||
9048 | if (gfc_match_char (',') != MATCH_YES) | |
9049 | { | |
9050 | gfc_error ("Unexpected characters in PARAMETER statement at %C"); | |
9051 | m = MATCH_ERROR; | |
9052 | break; | |
9053 | } | |
9054 | } | |
9055 | ||
9056 | return m; | |
9057 | } | |
9058 | ||
9059 | ||
8e652fcf | 9060 | match |
9061 | gfc_match_automatic (void) | |
9062 | { | |
9063 | gfc_symbol *sym; | |
9064 | match m; | |
9065 | bool seen_symbol = false; | |
9066 | ||
9067 | if (!flag_dec_static) | |
9068 | { | |
841da9cf | 9069 | gfc_error ("%s at %C is a DEC extension, enable with " |
9070 | "%<-fdec-static%>", | |
9071 | "AUTOMATIC" | |
9072 | ); | |
8e652fcf | 9073 | return MATCH_ERROR; |
9074 | } | |
9075 | ||
9076 | gfc_match (" ::"); | |
9077 | ||
9078 | for (;;) | |
9079 | { | |
9080 | m = gfc_match_symbol (&sym, 0); | |
9081 | switch (m) | |
9082 | { | |
9083 | case MATCH_NO: | |
9084 | break; | |
9085 | ||
9086 | case MATCH_ERROR: | |
9087 | return MATCH_ERROR; | |
9088 | ||
9089 | case MATCH_YES: | |
9090 | if (!gfc_add_automatic (&sym->attr, sym->name, &gfc_current_locus)) | |
9091 | return MATCH_ERROR; | |
9092 | seen_symbol = true; | |
9093 | break; | |
9094 | } | |
9095 | ||
9096 | if (gfc_match_eos () == MATCH_YES) | |
9097 | break; | |
9098 | if (gfc_match_char (',') != MATCH_YES) | |
9099 | goto syntax; | |
9100 | } | |
9101 | ||
9102 | if (!seen_symbol) | |
9103 | { | |
9104 | gfc_error ("Expected entity-list in AUTOMATIC statement at %C"); | |
9105 | return MATCH_ERROR; | |
9106 | } | |
9107 | ||
9108 | return MATCH_YES; | |
9109 | ||
9110 | syntax: | |
9111 | gfc_error ("Syntax error in AUTOMATIC statement at %C"); | |
9112 | return MATCH_ERROR; | |
9113 | } | |
9114 | ||
9115 | ||
9116 | match | |
9117 | gfc_match_static (void) | |
9118 | { | |
9119 | gfc_symbol *sym; | |
9120 | match m; | |
9121 | bool seen_symbol = false; | |
9122 | ||
9123 | if (!flag_dec_static) | |
9124 | { | |
841da9cf | 9125 | gfc_error ("%s at %C is a DEC extension, enable with " |
9126 | "%<-fdec-static%>", | |
9127 | "STATIC"); | |
8e652fcf | 9128 | return MATCH_ERROR; |
9129 | } | |
9130 | ||
9131 | gfc_match (" ::"); | |
9132 | ||
9133 | for (;;) | |
9134 | { | |
9135 | m = gfc_match_symbol (&sym, 0); | |
9136 | switch (m) | |
9137 | { | |
9138 | case MATCH_NO: | |
9139 | break; | |
9140 | ||
9141 | case MATCH_ERROR: | |
9142 | return MATCH_ERROR; | |
9143 | ||
9144 | case MATCH_YES: | |
9145 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, | |
9146 | &gfc_current_locus)) | |
9147 | return MATCH_ERROR; | |
9148 | seen_symbol = true; | |
9149 | break; | |
9150 | } | |
9151 | ||
9152 | if (gfc_match_eos () == MATCH_YES) | |
9153 | break; | |
9154 | if (gfc_match_char (',') != MATCH_YES) | |
9155 | goto syntax; | |
9156 | } | |
9157 | ||
9158 | if (!seen_symbol) | |
9159 | { | |
9160 | gfc_error ("Expected entity-list in STATIC statement at %C"); | |
9161 | return MATCH_ERROR; | |
9162 | } | |
9163 | ||
9164 | return MATCH_YES; | |
9165 | ||
9166 | syntax: | |
9167 | gfc_error ("Syntax error in STATIC statement at %C"); | |
9168 | return MATCH_ERROR; | |
9169 | } | |
9170 | ||
9171 | ||
4ee9c684 | 9172 | /* Save statements have a special syntax. */ |
9173 | ||
9174 | match | |
9175 | gfc_match_save (void) | |
9176 | { | |
82f5ee13 | 9177 | char n[GFC_MAX_SYMBOL_LEN+1]; |
9178 | gfc_common_head *c; | |
4ee9c684 | 9179 | gfc_symbol *sym; |
9180 | match m; | |
9181 | ||
9182 | if (gfc_match_eos () == MATCH_YES) | |
9183 | { | |
9184 | if (gfc_current_ns->seen_save) | |
9185 | { | |
60e19868 | 9186 | if (!gfc_notify_std (GFC_STD_LEGACY, "Blanket SAVE statement at %C " |
9187 | "follows previous SAVE statement")) | |
76e82f95 | 9188 | return MATCH_ERROR; |
4ee9c684 | 9189 | } |
9190 | ||
9191 | gfc_current_ns->save_all = gfc_current_ns->seen_save = 1; | |
9192 | return MATCH_YES; | |
9193 | } | |
9194 | ||
9195 | if (gfc_current_ns->save_all) | |
9196 | { | |
60e19868 | 9197 | if (!gfc_notify_std (GFC_STD_LEGACY, "SAVE statement at %C follows " |
9198 | "blanket SAVE statement")) | |
76e82f95 | 9199 | return MATCH_ERROR; |
4ee9c684 | 9200 | } |
9201 | ||
9202 | gfc_match (" ::"); | |
9203 | ||
9204 | for (;;) | |
9205 | { | |
9206 | m = gfc_match_symbol (&sym, 0); | |
9207 | switch (m) | |
9208 | { | |
9209 | case MATCH_YES: | |
76e207a9 | 9210 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, |
60e19868 | 9211 | &gfc_current_locus)) |
4ee9c684 | 9212 | return MATCH_ERROR; |
9213 | goto next_item; | |
9214 | ||
9215 | case MATCH_NO: | |
9216 | break; | |
9217 | ||
9218 | case MATCH_ERROR: | |
9219 | return MATCH_ERROR; | |
9220 | } | |
9221 | ||
82f5ee13 | 9222 | m = gfc_match (" / %n /", &n); |
4ee9c684 | 9223 | if (m == MATCH_ERROR) |
9224 | return MATCH_ERROR; | |
9225 | if (m == MATCH_NO) | |
9226 | goto syntax; | |
9227 | ||
403ddc45 | 9228 | c = gfc_get_common (n, 0); |
82f5ee13 | 9229 | c->saved = 1; |
9230 | ||
4ee9c684 | 9231 | gfc_current_ns->seen_save = 1; |
9232 | ||
9233 | next_item: | |
9234 | if (gfc_match_eos () == MATCH_YES) | |
9235 | break; | |
9236 | if (gfc_match_char (',') != MATCH_YES) | |
9237 | goto syntax; | |
9238 | } | |
9239 | ||
9240 | return MATCH_YES; | |
9241 | ||
9242 | syntax: | |
9243 | gfc_error ("Syntax error in SAVE statement at %C"); | |
9244 | return MATCH_ERROR; | |
9245 | } | |
9246 | ||
9247 | ||
8f6339b6 | 9248 | match |
9249 | gfc_match_value (void) | |
9250 | { | |
9251 | gfc_symbol *sym; | |
9252 | match m; | |
9253 | ||
6a7084d7 | 9254 | /* This is not allowed within a BLOCK construct! */ |
9255 | if (gfc_current_state () == COMP_BLOCK) | |
9256 | { | |
9257 | gfc_error ("VALUE is not allowed inside of BLOCK at %C"); | |
9258 | return MATCH_ERROR; | |
9259 | } | |
9260 | ||
60e19868 | 9261 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE statement at %C")) |
8f6339b6 | 9262 | return MATCH_ERROR; |
9263 | ||
9264 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9265 | { | |
9266 | return MATCH_ERROR; | |
9267 | } | |
9268 | ||
9269 | if (gfc_match_eos () == MATCH_YES) | |
9270 | goto syntax; | |
9271 | ||
9272 | for(;;) | |
9273 | { | |
9274 | m = gfc_match_symbol (&sym, 0); | |
9275 | switch (m) | |
9276 | { | |
9277 | case MATCH_YES: | |
60e19868 | 9278 | if (!gfc_add_value (&sym->attr, sym->name, &gfc_current_locus)) |
8f6339b6 | 9279 | return MATCH_ERROR; |
9280 | goto next_item; | |
9281 | ||
9282 | case MATCH_NO: | |
9283 | break; | |
9284 | ||
9285 | case MATCH_ERROR: | |
9286 | return MATCH_ERROR; | |
9287 | } | |
9288 | ||
9289 | next_item: | |
9290 | if (gfc_match_eos () == MATCH_YES) | |
9291 | break; | |
9292 | if (gfc_match_char (',') != MATCH_YES) | |
9293 | goto syntax; | |
9294 | } | |
9295 | ||
9296 | return MATCH_YES; | |
9297 | ||
9298 | syntax: | |
9299 | gfc_error ("Syntax error in VALUE statement at %C"); | |
9300 | return MATCH_ERROR; | |
9301 | } | |
9302 | ||
f6d0e37a | 9303 | |
ef814c81 | 9304 | match |
9305 | gfc_match_volatile (void) | |
9306 | { | |
9307 | gfc_symbol *sym; | |
2c6ca8fc | 9308 | char *name; |
ef814c81 | 9309 | match m; |
9310 | ||
60e19868 | 9311 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE statement at %C")) |
ef814c81 | 9312 | return MATCH_ERROR; |
9313 | ||
9314 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9315 | { | |
9316 | return MATCH_ERROR; | |
9317 | } | |
9318 | ||
9319 | if (gfc_match_eos () == MATCH_YES) | |
9320 | goto syntax; | |
9321 | ||
9322 | for(;;) | |
9323 | { | |
8db94b3b | 9324 | /* VOLATILE is special because it can be added to host-associated |
293d72e0 | 9325 | symbols locally. Except for coarrays. */ |
2f241857 | 9326 | m = gfc_match_symbol (&sym, 1); |
ef814c81 | 9327 | switch (m) |
9328 | { | |
9329 | case MATCH_YES: | |
2c6ca8fc | 9330 | name = XCNEWVAR (char, strlen (sym->name) + 1); |
9331 | strcpy (name, sym->name); | |
9332 | if (!check_function_name (name)) | |
9333 | return MATCH_ERROR; | |
aff518b0 | 9334 | /* F2008, C560+C561. VOLATILE for host-/use-associated variable or |
9335 | for variable in a BLOCK which is defined outside of the BLOCK. */ | |
9336 | if (sym->ns != gfc_current_ns && sym->attr.codimension) | |
9337 | { | |
716da296 | 9338 | gfc_error ("Specifying VOLATILE for coarray variable %qs at " |
aff518b0 | 9339 | "%C, which is use-/host-associated", sym->name); |
9340 | return MATCH_ERROR; | |
9341 | } | |
60e19868 | 9342 | if (!gfc_add_volatile (&sym->attr, sym->name, &gfc_current_locus)) |
ef814c81 | 9343 | return MATCH_ERROR; |
9344 | goto next_item; | |
9345 | ||
9346 | case MATCH_NO: | |
9347 | break; | |
9348 | ||
9349 | case MATCH_ERROR: | |
9350 | return MATCH_ERROR; | |
9351 | } | |
9352 | ||
9353 | next_item: | |
9354 | if (gfc_match_eos () == MATCH_YES) | |
9355 | break; | |
9356 | if (gfc_match_char (',') != MATCH_YES) | |
9357 | goto syntax; | |
9358 | } | |
9359 | ||
9360 | return MATCH_YES; | |
9361 | ||
9362 | syntax: | |
9363 | gfc_error ("Syntax error in VOLATILE statement at %C"); | |
9364 | return MATCH_ERROR; | |
9365 | } | |
9366 | ||
9367 | ||
738928be | 9368 | match |
9369 | gfc_match_asynchronous (void) | |
9370 | { | |
9371 | gfc_symbol *sym; | |
2c6ca8fc | 9372 | char *name; |
738928be | 9373 | match m; |
9374 | ||
60e19868 | 9375 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS statement at %C")) |
738928be | 9376 | return MATCH_ERROR; |
9377 | ||
9378 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9379 | { | |
9380 | return MATCH_ERROR; | |
9381 | } | |
9382 | ||
9383 | if (gfc_match_eos () == MATCH_YES) | |
9384 | goto syntax; | |
9385 | ||
9386 | for(;;) | |
9387 | { | |
8db94b3b | 9388 | /* ASYNCHRONOUS is special because it can be added to host-associated |
738928be | 9389 | symbols locally. */ |
9390 | m = gfc_match_symbol (&sym, 1); | |
9391 | switch (m) | |
9392 | { | |
9393 | case MATCH_YES: | |
2c6ca8fc | 9394 | name = XCNEWVAR (char, strlen (sym->name) + 1); |
9395 | strcpy (name, sym->name); | |
9396 | if (!check_function_name (name)) | |
9397 | return MATCH_ERROR; | |
60e19868 | 9398 | if (!gfc_add_asynchronous (&sym->attr, sym->name, &gfc_current_locus)) |
738928be | 9399 | return MATCH_ERROR; |
9400 | goto next_item; | |
9401 | ||
9402 | case MATCH_NO: | |
9403 | break; | |
9404 | ||
9405 | case MATCH_ERROR: | |
9406 | return MATCH_ERROR; | |
9407 | } | |
9408 | ||
9409 | next_item: | |
9410 | if (gfc_match_eos () == MATCH_YES) | |
9411 | break; | |
9412 | if (gfc_match_char (',') != MATCH_YES) | |
9413 | goto syntax; | |
9414 | } | |
9415 | ||
9416 | return MATCH_YES; | |
9417 | ||
9418 | syntax: | |
9419 | gfc_error ("Syntax error in ASYNCHRONOUS statement at %C"); | |
9420 | return MATCH_ERROR; | |
9421 | } | |
9422 | ||
9423 | ||
4b8eb6ca | 9424 | /* Match a module procedure statement in a submodule. */ |
9425 | ||
9426 | match | |
9427 | gfc_match_submod_proc (void) | |
9428 | { | |
9429 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9430 | gfc_symbol *sym, *fsym; | |
9431 | match m; | |
9432 | gfc_formal_arglist *formal, *head, *tail; | |
9433 | ||
9434 | if (gfc_current_state () != COMP_CONTAINS | |
9435 | || !(gfc_state_stack->previous | |
76e207a9 | 9436 | && (gfc_state_stack->previous->state == COMP_SUBMODULE |
9437 | || gfc_state_stack->previous->state == COMP_MODULE))) | |
4b8eb6ca | 9438 | return MATCH_NO; |
9439 | ||
9440 | m = gfc_match (" module% procedure% %n", name); | |
9441 | if (m != MATCH_YES) | |
9442 | return m; | |
9443 | ||
9444 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE PROCEDURE declaration " | |
9445 | "at %C")) | |
9446 | return MATCH_ERROR; | |
9447 | ||
9448 | if (get_proc_name (name, &sym, false)) | |
9449 | return MATCH_ERROR; | |
9450 | ||
9451 | /* Make sure that the result field is appropriately filled, even though | |
9452 | the result symbol will be replaced later on. */ | |
dee7f6d1 | 9453 | if (sym->tlink && sym->tlink->attr.function) |
4b8eb6ca | 9454 | { |
dee7f6d1 | 9455 | if (sym->tlink->result |
9456 | && sym->tlink->result != sym->tlink) | |
9457 | sym->result= sym->tlink->result; | |
4b8eb6ca | 9458 | else |
9459 | sym->result = sym; | |
9460 | } | |
9461 | ||
9462 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if | |
9463 | the symbol existed before. */ | |
9464 | sym->declared_at = gfc_current_locus; | |
9465 | ||
9466 | if (!sym->attr.module_procedure) | |
9467 | return MATCH_ERROR; | |
9468 | ||
9469 | /* Signal match_end to expect "end procedure". */ | |
9470 | sym->abr_modproc_decl = 1; | |
9471 | ||
9472 | /* Change from IFSRC_IFBODY coming from the interface declaration. */ | |
9473 | sym->attr.if_source = IFSRC_DECL; | |
9474 | ||
9475 | gfc_new_block = sym; | |
9476 | ||
9477 | /* Make a new formal arglist with the symbols in the procedure | |
9478 | namespace. */ | |
9479 | head = tail = NULL; | |
9480 | for (formal = sym->formal; formal && formal->sym; formal = formal->next) | |
9481 | { | |
9482 | if (formal == sym->formal) | |
9483 | head = tail = gfc_get_formal_arglist (); | |
9484 | else | |
9485 | { | |
9486 | tail->next = gfc_get_formal_arglist (); | |
9487 | tail = tail->next; | |
9488 | } | |
9489 | ||
9490 | if (gfc_copy_dummy_sym (&fsym, formal->sym, 0)) | |
9491 | goto cleanup; | |
9492 | ||
9493 | tail->sym = fsym; | |
9494 | gfc_set_sym_referenced (fsym); | |
9495 | } | |
9496 | ||
9497 | /* The dummy symbols get cleaned up, when the formal_namespace of the | |
9498 | interface declaration is cleared. This allows us to add the | |
9499 | explicit interface as is done for other type of procedure. */ | |
9500 | if (!gfc_add_explicit_interface (sym, IFSRC_DECL, head, | |
9501 | &gfc_current_locus)) | |
9502 | return MATCH_ERROR; | |
9503 | ||
9504 | if (gfc_match_eos () != MATCH_YES) | |
9505 | { | |
9506 | gfc_syntax_error (ST_MODULE_PROC); | |
9507 | return MATCH_ERROR; | |
9508 | } | |
9509 | ||
9510 | return MATCH_YES; | |
9511 | ||
9512 | cleanup: | |
9513 | gfc_free_formal_arglist (head); | |
9514 | return MATCH_ERROR; | |
9515 | } | |
9516 | ||
9517 | ||
4ee9c684 | 9518 | /* Match a module procedure statement. Note that we have to modify |
9519 | symbols in the parent's namespace because the current one was there | |
89d91d02 | 9520 | to receive symbols that are in an interface's formal argument list. */ |
4ee9c684 | 9521 | |
9522 | match | |
9523 | gfc_match_modproc (void) | |
9524 | { | |
9525 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9526 | gfc_symbol *sym; | |
9527 | match m; | |
d920fb76 | 9528 | locus old_locus; |
63d42079 | 9529 | gfc_namespace *module_ns; |
94ce9f74 | 9530 | gfc_interface *old_interface_head, *interface; |
4ee9c684 | 9531 | |
9532 | if (gfc_state_stack->state != COMP_INTERFACE | |
9533 | || gfc_state_stack->previous == NULL | |
5cf92482 | 9534 | || current_interface.type == INTERFACE_NAMELESS |
9535 | || current_interface.type == INTERFACE_ABSTRACT) | |
4ee9c684 | 9536 | { |
1a9745d2 | 9537 | gfc_error ("MODULE PROCEDURE at %C must be in a generic module " |
9538 | "interface"); | |
4ee9c684 | 9539 | return MATCH_ERROR; |
9540 | } | |
9541 | ||
63d42079 | 9542 | module_ns = gfc_current_ns->parent; |
9543 | for (; module_ns; module_ns = module_ns->parent) | |
15ca3865 | 9544 | if (module_ns->proc_name->attr.flavor == FL_MODULE |
9545 | || module_ns->proc_name->attr.flavor == FL_PROGRAM | |
9546 | || (module_ns->proc_name->attr.flavor == FL_PROCEDURE | |
9547 | && !module_ns->proc_name->attr.contained)) | |
63d42079 | 9548 | break; |
9549 | ||
9550 | if (module_ns == NULL) | |
9551 | return MATCH_ERROR; | |
9552 | ||
94ce9f74 | 9553 | /* Store the current state of the interface. We will need it if we |
9554 | end up with a syntax error and need to recover. */ | |
9555 | old_interface_head = gfc_current_interface_head (); | |
9556 | ||
d920fb76 | 9557 | /* Check if the F2008 optional double colon appears. */ |
9558 | gfc_gobble_whitespace (); | |
9559 | old_locus = gfc_current_locus; | |
9560 | if (gfc_match ("::") == MATCH_YES) | |
9561 | { | |
60e19868 | 9562 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
9563 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
d920fb76 | 9564 | return MATCH_ERROR; |
9565 | } | |
9566 | else | |
9567 | gfc_current_locus = old_locus; | |
8db94b3b | 9568 | |
4ee9c684 | 9569 | for (;;) |
9570 | { | |
94ce9f74 | 9571 | bool last = false; |
d920fb76 | 9572 | old_locus = gfc_current_locus; |
94ce9f74 | 9573 | |
4ee9c684 | 9574 | m = gfc_match_name (name); |
9575 | if (m == MATCH_NO) | |
9576 | goto syntax; | |
9577 | if (m != MATCH_YES) | |
9578 | return MATCH_ERROR; | |
9579 | ||
94ce9f74 | 9580 | /* Check for syntax error before starting to add symbols to the |
9581 | current namespace. */ | |
9582 | if (gfc_match_eos () == MATCH_YES) | |
9583 | last = true; | |
d920fb76 | 9584 | |
94ce9f74 | 9585 | if (!last && gfc_match_char (',') != MATCH_YES) |
9586 | goto syntax; | |
9587 | ||
9588 | /* Now we're sure the syntax is valid, we process this item | |
9589 | further. */ | |
63d42079 | 9590 | if (gfc_get_symbol (name, module_ns, &sym)) |
4ee9c684 | 9591 | return MATCH_ERROR; |
9592 | ||
15ca3865 | 9593 | if (sym->attr.intrinsic) |
9594 | { | |
9595 | gfc_error ("Intrinsic procedure at %L cannot be a MODULE " | |
9596 | "PROCEDURE", &old_locus); | |
9597 | return MATCH_ERROR; | |
9598 | } | |
9599 | ||
4ee9c684 | 9600 | if (sym->attr.proc != PROC_MODULE |
60e19868 | 9601 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
4ee9c684 | 9602 | return MATCH_ERROR; |
9603 | ||
60e19868 | 9604 | if (!gfc_add_interface (sym)) |
4ee9c684 | 9605 | return MATCH_ERROR; |
9606 | ||
3186f695 | 9607 | sym->attr.mod_proc = 1; |
15ca3865 | 9608 | sym->declared_at = old_locus; |
3186f695 | 9609 | |
94ce9f74 | 9610 | if (last) |
4ee9c684 | 9611 | break; |
4ee9c684 | 9612 | } |
9613 | ||
9614 | return MATCH_YES; | |
9615 | ||
9616 | syntax: | |
94ce9f74 | 9617 | /* Restore the previous state of the interface. */ |
9618 | interface = gfc_current_interface_head (); | |
9619 | gfc_set_current_interface_head (old_interface_head); | |
9620 | ||
9621 | /* Free the new interfaces. */ | |
9622 | while (interface != old_interface_head) | |
9623 | { | |
9624 | gfc_interface *i = interface->next; | |
434f0922 | 9625 | free (interface); |
94ce9f74 | 9626 | interface = i; |
9627 | } | |
9628 | ||
9629 | /* And issue a syntax error. */ | |
4ee9c684 | 9630 | gfc_syntax_error (ST_MODULE_PROC); |
9631 | return MATCH_ERROR; | |
9632 | } | |
9633 | ||
9634 | ||
ea94d76d | 9635 | /* Check a derived type that is being extended. */ |
7a99bc9b | 9636 | |
ea94d76d | 9637 | static gfc_symbol* |
9638 | check_extended_derived_type (char *name) | |
9639 | { | |
9640 | gfc_symbol *extended; | |
9641 | ||
9642 | if (gfc_find_symbol (name, gfc_current_ns, 1, &extended)) | |
9643 | { | |
9644 | gfc_error ("Ambiguous symbol in TYPE definition at %C"); | |
9645 | return NULL; | |
9646 | } | |
9647 | ||
7a99bc9b | 9648 | extended = gfc_find_dt_in_generic (extended); |
9649 | ||
9650 | /* F08:C428. */ | |
ea94d76d | 9651 | if (!extended) |
9652 | { | |
716da296 | 9653 | gfc_error ("Symbol %qs at %C has not been previously defined", name); |
ea94d76d | 9654 | return NULL; |
9655 | } | |
9656 | ||
9657 | if (extended->attr.flavor != FL_DERIVED) | |
9658 | { | |
716da296 | 9659 | gfc_error ("%qs in EXTENDS expression at %C is not a " |
ea94d76d | 9660 | "derived type", name); |
9661 | return NULL; | |
9662 | } | |
9663 | ||
9664 | if (extended->attr.is_bind_c) | |
9665 | { | |
716da296 | 9666 | gfc_error ("%qs cannot be extended at %C because it " |
ea94d76d | 9667 | "is BIND(C)", extended->name); |
9668 | return NULL; | |
9669 | } | |
9670 | ||
9671 | if (extended->attr.sequence) | |
9672 | { | |
716da296 | 9673 | gfc_error ("%qs cannot be extended at %C because it " |
ea94d76d | 9674 | "is a SEQUENCE type", extended->name); |
9675 | return NULL; | |
9676 | } | |
9677 | ||
9678 | return extended; | |
9679 | } | |
9680 | ||
9681 | ||
c5d33754 | 9682 | /* Match the optional attribute specifiers for a type declaration. |
9683 | Return MATCH_ERROR if an error is encountered in one of the handled | |
9684 | attributes (public, private, bind(c)), MATCH_NO if what's found is | |
9685 | not a handled attribute, and MATCH_YES otherwise. TODO: More error | |
9686 | checking on attribute conflicts needs to be done. */ | |
4ee9c684 | 9687 | |
9688 | match | |
ea94d76d | 9689 | gfc_get_type_attr_spec (symbol_attribute *attr, char *name) |
4ee9c684 | 9690 | { |
c5d33754 | 9691 | /* See if the derived type is marked as private. */ |
4ee9c684 | 9692 | if (gfc_match (" , private") == MATCH_YES) |
9693 | { | |
e14bee04 | 9694 | if (gfc_current_state () != COMP_MODULE) |
4ee9c684 | 9695 | { |
e14bee04 | 9696 | gfc_error ("Derived type at %C can only be PRIVATE in the " |
9697 | "specification part of a module"); | |
4ee9c684 | 9698 | return MATCH_ERROR; |
9699 | } | |
9700 | ||
60e19868 | 9701 | if (!gfc_add_access (attr, ACCESS_PRIVATE, NULL, NULL)) |
4ee9c684 | 9702 | return MATCH_ERROR; |
4ee9c684 | 9703 | } |
c5d33754 | 9704 | else if (gfc_match (" , public") == MATCH_YES) |
4ee9c684 | 9705 | { |
e14bee04 | 9706 | if (gfc_current_state () != COMP_MODULE) |
4ee9c684 | 9707 | { |
e14bee04 | 9708 | gfc_error ("Derived type at %C can only be PUBLIC in the " |
9709 | "specification part of a module"); | |
4ee9c684 | 9710 | return MATCH_ERROR; |
9711 | } | |
9712 | ||
60e19868 | 9713 | if (!gfc_add_access (attr, ACCESS_PUBLIC, NULL, NULL)) |
4ee9c684 | 9714 | return MATCH_ERROR; |
4ee9c684 | 9715 | } |
ac5f2650 | 9716 | else if (gfc_match (" , bind ( c )") == MATCH_YES) |
c5d33754 | 9717 | { |
9718 | /* If the type is defined to be bind(c) it then needs to make | |
9719 | sure that all fields are interoperable. This will | |
9720 | need to be a semantic check on the finished derived type. | |
9721 | See 15.2.3 (lines 9-12) of F2003 draft. */ | |
60e19868 | 9722 | if (!gfc_add_is_bind_c (attr, NULL, &gfc_current_locus, 0)) |
c5d33754 | 9723 | return MATCH_ERROR; |
9724 | ||
9725 | /* TODO: attr conflicts need to be checked, probably in symbol.c. */ | |
9726 | } | |
ac5f2650 | 9727 | else if (gfc_match (" , abstract") == MATCH_YES) |
9728 | { | |
60e19868 | 9729 | if (!gfc_notify_std (GFC_STD_F2003, "ABSTRACT type at %C")) |
ac5f2650 | 9730 | return MATCH_ERROR; |
9731 | ||
60e19868 | 9732 | if (!gfc_add_abstract (attr, &gfc_current_locus)) |
ac5f2650 | 9733 | return MATCH_ERROR; |
9734 | } | |
60e19868 | 9735 | else if (name && gfc_match (" , extends ( %n )", name) == MATCH_YES) |
ea94d76d | 9736 | { |
60e19868 | 9737 | if (!gfc_add_extension (attr, &gfc_current_locus)) |
ea94d76d | 9738 | return MATCH_ERROR; |
9739 | } | |
c5d33754 | 9740 | else |
9741 | return MATCH_NO; | |
9742 | ||
9743 | /* If we get here, something matched. */ | |
9744 | return MATCH_YES; | |
9745 | } | |
9746 | ||
9747 | ||
d7cd448a | 9748 | /* Common function for type declaration blocks similar to derived types, such |
9749 | as STRUCTURES and MAPs. Unlike derived types, a structure type | |
9750 | does NOT have a generic symbol matching the name given by the user. | |
9751 | STRUCTUREs can share names with variables and PARAMETERs so we must allow | |
9752 | for the creation of an independent symbol. | |
7d7125df | 9753 | Other parameters are a message to prefix errors with, the name of the new |
d7cd448a | 9754 | type to be created, and the flavor to add to the resulting symbol. */ |
9755 | ||
9756 | static bool | |
9757 | get_struct_decl (const char *name, sym_flavor fl, locus *decl, | |
9758 | gfc_symbol **result) | |
9759 | { | |
9760 | gfc_symbol *sym; | |
9761 | locus where; | |
9762 | ||
9763 | gcc_assert (name[0] == (char) TOUPPER (name[0])); | |
9764 | ||
9765 | if (decl) | |
9766 | where = *decl; | |
9767 | else | |
9768 | where = gfc_current_locus; | |
9769 | ||
9770 | if (gfc_get_symbol (name, NULL, &sym)) | |
9771 | return false; | |
9772 | ||
9773 | if (!sym) | |
9774 | { | |
9775 | gfc_internal_error ("Failed to create structure type '%s' at %C", name); | |
9776 | return false; | |
9777 | } | |
9778 | ||
9779 | if (sym->components != NULL || sym->attr.zero_comp) | |
9780 | { | |
1b7008c4 | 9781 | gfc_error ("Type definition of %qs at %C was already defined at %L", |
d7cd448a | 9782 | sym->name, &sym->declared_at); |
9783 | return false; | |
9784 | } | |
9785 | ||
9786 | sym->declared_at = where; | |
9787 | ||
9788 | if (sym->attr.flavor != fl | |
9789 | && !gfc_add_flavor (&sym->attr, fl, sym->name, NULL)) | |
9790 | return false; | |
9791 | ||
9792 | if (!sym->hash_value) | |
9793 | /* Set the hash for the compound name for this type. */ | |
9794 | sym->hash_value = gfc_hash_value (sym); | |
9795 | ||
9796 | /* Normally the type is expected to have been completely parsed by the time | |
9797 | a field declaration with this type is seen. For unions, maps, and nested | |
9798 | structure declarations, we need to indicate that it is okay that we | |
9799 | haven't seen any components yet. This will be updated after the structure | |
9800 | is fully parsed. */ | |
9801 | sym->attr.zero_comp = 0; | |
9802 | ||
9803 | /* Structures always act like derived-types with the SEQUENCE attribute */ | |
9804 | gfc_add_sequence (&sym->attr, sym->name, NULL); | |
9805 | ||
9806 | if (result) *result = sym; | |
9807 | ||
9808 | return true; | |
9809 | } | |
9810 | ||
9811 | ||
9812 | /* Match the opening of a MAP block. Like a struct within a union in C; | |
9813 | behaves identical to STRUCTURE blocks. */ | |
9814 | ||
9815 | match | |
9816 | gfc_match_map (void) | |
9817 | { | |
ac1739da | 9818 | /* Counter used to give unique internal names to map structures. */ |
9819 | static unsigned int gfc_map_id = 0; | |
9820 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9821 | gfc_symbol *sym; | |
9822 | locus old_loc; | |
d7cd448a | 9823 | |
ac1739da | 9824 | old_loc = gfc_current_locus; |
d7cd448a | 9825 | |
ac1739da | 9826 | if (gfc_match_eos () != MATCH_YES) |
9827 | { | |
9828 | gfc_error ("Junk after MAP statement at %C"); | |
9829 | gfc_current_locus = old_loc; | |
9830 | return MATCH_ERROR; | |
9831 | } | |
d7cd448a | 9832 | |
ac1739da | 9833 | /* Map blocks are anonymous so we make up unique names for the symbol table |
9834 | which are invalid Fortran identifiers. */ | |
9835 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "MM$%u", gfc_map_id++); | |
d7cd448a | 9836 | |
ac1739da | 9837 | if (!get_struct_decl (name, FL_STRUCT, &old_loc, &sym)) |
9838 | return MATCH_ERROR; | |
d7cd448a | 9839 | |
ac1739da | 9840 | gfc_new_block = sym; |
d7cd448a | 9841 | |
ac1739da | 9842 | return MATCH_YES; |
d7cd448a | 9843 | } |
9844 | ||
9845 | ||
9846 | /* Match the opening of a UNION block. */ | |
9847 | ||
9848 | match | |
9849 | gfc_match_union (void) | |
9850 | { | |
ac1739da | 9851 | /* Counter used to give unique internal names to union types. */ |
9852 | static unsigned int gfc_union_id = 0; | |
9853 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9854 | gfc_symbol *sym; | |
9855 | locus old_loc; | |
d7cd448a | 9856 | |
ac1739da | 9857 | old_loc = gfc_current_locus; |
d7cd448a | 9858 | |
ac1739da | 9859 | if (gfc_match_eos () != MATCH_YES) |
9860 | { | |
9861 | gfc_error ("Junk after UNION statement at %C"); | |
9862 | gfc_current_locus = old_loc; | |
9863 | return MATCH_ERROR; | |
9864 | } | |
d7cd448a | 9865 | |
ac1739da | 9866 | /* Unions are anonymous so we make up unique names for the symbol table |
9867 | which are invalid Fortran identifiers. */ | |
9868 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "UU$%u", gfc_union_id++); | |
d7cd448a | 9869 | |
ac1739da | 9870 | if (!get_struct_decl (name, FL_UNION, &old_loc, &sym)) |
9871 | return MATCH_ERROR; | |
d7cd448a | 9872 | |
ac1739da | 9873 | gfc_new_block = sym; |
d7cd448a | 9874 | |
ac1739da | 9875 | return MATCH_YES; |
d7cd448a | 9876 | } |
9877 | ||
9878 | ||
9879 | /* Match the beginning of a STRUCTURE declaration. This is similar to | |
9880 | matching the beginning of a derived type declaration with a few | |
9881 | twists. The resulting type symbol has no access control or other | |
9882 | interesting attributes. */ | |
9883 | ||
9884 | match | |
9885 | gfc_match_structure_decl (void) | |
9886 | { | |
ac1739da | 9887 | /* Counter used to give unique internal names to anonymous structures. */ |
9888 | static unsigned int gfc_structure_id = 0; | |
9889 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9890 | gfc_symbol *sym; | |
9891 | match m; | |
9892 | locus where; | |
d7cd448a | 9893 | |
ac1739da | 9894 | if (!flag_dec_structure) |
9895 | { | |
841da9cf | 9896 | gfc_error ("%s at %C is a DEC extension, enable with " |
9897 | "%<-fdec-structure%>", | |
9898 | "STRUCTURE"); | |
ac1739da | 9899 | return MATCH_ERROR; |
9900 | } | |
d7cd448a | 9901 | |
ac1739da | 9902 | name[0] = '\0'; |
d7cd448a | 9903 | |
ac1739da | 9904 | m = gfc_match (" /%n/", name); |
9905 | if (m != MATCH_YES) | |
9906 | { | |
9907 | /* Non-nested structure declarations require a structure name. */ | |
9908 | if (!gfc_comp_struct (gfc_current_state ())) | |
9909 | { | |
9910 | gfc_error ("Structure name expected in non-nested structure " | |
9911 | "declaration at %C"); | |
9912 | return MATCH_ERROR; | |
9913 | } | |
9914 | /* This is an anonymous structure; make up a unique name for it | |
9915 | (upper-case letters never make it to symbol names from the source). | |
9916 | The important thing is initializing the type variable | |
9917 | and setting gfc_new_symbol, which is immediately used by | |
9918 | parse_structure () and variable_decl () to add components of | |
9919 | this type. */ | |
9920 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "SS$%u", gfc_structure_id++); | |
9921 | } | |
d7cd448a | 9922 | |
ac1739da | 9923 | where = gfc_current_locus; |
9924 | /* No field list allowed after non-nested structure declaration. */ | |
9925 | if (!gfc_comp_struct (gfc_current_state ()) | |
9926 | && gfc_match_eos () != MATCH_YES) | |
9927 | { | |
9928 | gfc_error ("Junk after non-nested STRUCTURE statement at %C"); | |
9929 | return MATCH_ERROR; | |
9930 | } | |
d7cd448a | 9931 | |
ac1739da | 9932 | /* Make sure the name is not the name of an intrinsic type. */ |
9933 | if (gfc_is_intrinsic_typename (name)) | |
9934 | { | |
1b7008c4 | 9935 | gfc_error ("Structure name %qs at %C cannot be the same as an" |
ac1739da | 9936 | " intrinsic type", name); |
9937 | return MATCH_ERROR; | |
9938 | } | |
d7cd448a | 9939 | |
ac1739da | 9940 | /* Store the actual type symbol for the structure with an upper-case first |
9941 | letter (an invalid Fortran identifier). */ | |
d7cd448a | 9942 | |
dc326dc0 | 9943 | if (!get_struct_decl (gfc_dt_upper_string (name), FL_STRUCT, &where, &sym)) |
ac1739da | 9944 | return MATCH_ERROR; |
d7cd448a | 9945 | |
ac1739da | 9946 | gfc_new_block = sym; |
9947 | return MATCH_YES; | |
d7cd448a | 9948 | } |
9949 | ||
006943e8 | 9950 | |
9951 | /* This function does some work to determine which matcher should be used to | |
80ed743c | 9952 | * match a statement beginning with "TYPE". This is used to disambiguate TYPE |
006943e8 | 9953 | * as an alias for PRINT from derived type declarations, TYPE IS statements, |
80ed743c | 9954 | * and [parameterized] derived type declarations. */ |
006943e8 | 9955 | |
9956 | match | |
9957 | gfc_match_type (gfc_statement *st) | |
9958 | { | |
9959 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9960 | match m; | |
9961 | locus old_loc; | |
9962 | ||
9963 | /* Requires -fdec. */ | |
9964 | if (!flag_dec) | |
9965 | return MATCH_NO; | |
9966 | ||
9967 | m = gfc_match ("type"); | |
9968 | if (m != MATCH_YES) | |
9969 | return m; | |
9970 | /* If we already have an error in the buffer, it is probably from failing to | |
9971 | * match a derived type data declaration. Let it happen. */ | |
9972 | else if (gfc_error_flag_test ()) | |
9973 | return MATCH_NO; | |
9974 | ||
9975 | old_loc = gfc_current_locus; | |
9976 | *st = ST_NONE; | |
9977 | ||
9978 | /* If we see an attribute list before anything else it's definitely a derived | |
9979 | * type declaration. */ | |
9980 | if (gfc_match (" ,") == MATCH_YES || gfc_match (" ::") == MATCH_YES) | |
80ed743c | 9981 | goto derived; |
006943e8 | 9982 | |
9983 | /* By now "TYPE" has already been matched. If we do not see a name, this may | |
9984 | * be something like "TYPE *" or "TYPE <fmt>". */ | |
9985 | m = gfc_match_name (name); | |
9986 | if (m != MATCH_YES) | |
9987 | { | |
9988 | /* Let print match if it can, otherwise throw an error from | |
9989 | * gfc_match_derived_decl. */ | |
9990 | gfc_current_locus = old_loc; | |
9991 | if (gfc_match_print () == MATCH_YES) | |
9992 | { | |
9993 | *st = ST_WRITE; | |
9994 | return MATCH_YES; | |
9995 | } | |
80ed743c | 9996 | goto derived; |
006943e8 | 9997 | } |
9998 | ||
80ed743c | 9999 | /* Check for EOS. */ |
10000 | if (gfc_match_eos () == MATCH_YES) | |
006943e8 | 10001 | { |
10002 | /* By now we have "TYPE <name> <EOS>". Check first if the name is an | |
10003 | * intrinsic typename - if so let gfc_match_derived_decl dump an error. | |
10004 | * Otherwise if gfc_match_derived_decl fails it's probably an existing | |
10005 | * symbol which can be printed. */ | |
10006 | gfc_current_locus = old_loc; | |
10007 | m = gfc_match_derived_decl (); | |
10008 | if (gfc_is_intrinsic_typename (name) || m == MATCH_YES) | |
10009 | { | |
10010 | *st = ST_DERIVED_DECL; | |
10011 | return m; | |
10012 | } | |
006943e8 | 10013 | } |
80ed743c | 10014 | else |
10015 | { | |
10016 | /* Here we have "TYPE <name>". Check for <TYPE IS (> or a PDT declaration | |
10017 | like <type name(parameter)>. */ | |
10018 | gfc_gobble_whitespace (); | |
10019 | bool paren = gfc_peek_ascii_char () == '('; | |
10020 | if (paren) | |
10021 | { | |
10022 | if (strcmp ("is", name) == 0) | |
10023 | goto typeis; | |
10024 | else | |
10025 | goto derived; | |
10026 | } | |
10027 | } | |
10028 | ||
10029 | /* Treat TYPE... like PRINT... */ | |
10030 | gfc_current_locus = old_loc; | |
10031 | *st = ST_WRITE; | |
10032 | return gfc_match_print (); | |
006943e8 | 10033 | |
80ed743c | 10034 | derived: |
10035 | gfc_current_locus = old_loc; | |
10036 | *st = ST_DERIVED_DECL; | |
10037 | return gfc_match_derived_decl (); | |
10038 | ||
10039 | typeis: | |
10040 | gfc_current_locus = old_loc; | |
10041 | *st = ST_TYPE_IS; | |
10042 | return gfc_match_type_is (); | |
006943e8 | 10043 | } |
10044 | ||
10045 | ||
c5d33754 | 10046 | /* Match the beginning of a derived type declaration. If a type name |
10047 | was the result of a function, then it is possible to have a symbol | |
10048 | already to be known as a derived type yet have no components. */ | |
10049 | ||
10050 | match | |
10051 | gfc_match_derived_decl (void) | |
10052 | { | |
10053 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
ea94d76d | 10054 | char parent[GFC_MAX_SYMBOL_LEN + 1]; |
c5d33754 | 10055 | symbol_attribute attr; |
c2958b6b | 10056 | gfc_symbol *sym, *gensym; |
ea94d76d | 10057 | gfc_symbol *extended; |
c5d33754 | 10058 | match m; |
10059 | match is_type_attr_spec = MATCH_NO; | |
33e86520 | 10060 | bool seen_attr = false; |
c2958b6b | 10061 | gfc_interface *intr = NULL, *head; |
9d958d5b | 10062 | bool parameterized_type = false; |
10063 | bool seen_colons = false; | |
c5d33754 | 10064 | |
d7cd448a | 10065 | if (gfc_comp_struct (gfc_current_state ())) |
c5d33754 | 10066 | return MATCH_NO; |
10067 | ||
ea94d76d | 10068 | name[0] = '\0'; |
10069 | parent[0] = '\0'; | |
c5d33754 | 10070 | gfc_clear_attr (&attr); |
ea94d76d | 10071 | extended = NULL; |
c5d33754 | 10072 | |
10073 | do | |
10074 | { | |
ea94d76d | 10075 | is_type_attr_spec = gfc_get_type_attr_spec (&attr, parent); |
c5d33754 | 10076 | if (is_type_attr_spec == MATCH_ERROR) |
10077 | return MATCH_ERROR; | |
33e86520 | 10078 | if (is_type_attr_spec == MATCH_YES) |
10079 | seen_attr = true; | |
c5d33754 | 10080 | } while (is_type_attr_spec == MATCH_YES); |
4ee9c684 | 10081 | |
e485ad6b | 10082 | /* Deal with derived type extensions. The extension attribute has |
10083 | been added to 'attr' but now the parent type must be found and | |
10084 | checked. */ | |
ea94d76d | 10085 | if (parent[0]) |
10086 | extended = check_extended_derived_type (parent); | |
10087 | ||
10088 | if (parent[0] && !extended) | |
10089 | return MATCH_ERROR; | |
10090 | ||
9d958d5b | 10091 | m = gfc_match (" ::"); |
10092 | if (m == MATCH_YES) | |
10093 | { | |
10094 | seen_colons = true; | |
10095 | } | |
10096 | else if (seen_attr) | |
4ee9c684 | 10097 | { |
10098 | gfc_error ("Expected :: in TYPE definition at %C"); | |
10099 | return MATCH_ERROR; | |
10100 | } | |
10101 | ||
9d958d5b | 10102 | m = gfc_match (" %n ", name); |
4ee9c684 | 10103 | if (m != MATCH_YES) |
10104 | return m; | |
10105 | ||
9d958d5b | 10106 | /* Make sure that we don't identify TYPE IS (...) as a parameterized |
10107 | derived type named 'is'. | |
10108 | TODO Expand the check, when 'name' = "is" by matching " (tname) " | |
10109 | and checking if this is a(n intrinsic) typename. his picks up | |
10110 | misplaced TYPE IS statements such as in select_type_1.f03. */ | |
10111 | if (gfc_peek_ascii_char () == '(') | |
10112 | { | |
10113 | if (gfc_current_state () == COMP_SELECT_TYPE | |
10114 | || (!seen_colons && !strcmp (name, "is"))) | |
10115 | return MATCH_NO; | |
10116 | parameterized_type = true; | |
10117 | } | |
10118 | ||
10119 | m = gfc_match_eos (); | |
10120 | if (m != MATCH_YES && !parameterized_type) | |
10121 | return m; | |
10122 | ||
a3055431 | 10123 | /* Make sure the name is not the name of an intrinsic type. */ |
10124 | if (gfc_is_intrinsic_typename (name)) | |
4ee9c684 | 10125 | { |
716da296 | 10126 | gfc_error ("Type name %qs at %C cannot be the same as an intrinsic " |
1a9745d2 | 10127 | "type", name); |
4ee9c684 | 10128 | return MATCH_ERROR; |
10129 | } | |
10130 | ||
c2958b6b | 10131 | if (gfc_get_symbol (name, NULL, &gensym)) |
4ee9c684 | 10132 | return MATCH_ERROR; |
10133 | ||
c2958b6b | 10134 | if (!gensym->attr.generic && gensym->ts.type != BT_UNKNOWN) |
4ee9c684 | 10135 | { |
7dea3ef8 | 10136 | if (gensym->ts.u.derived) |
10137 | gfc_error ("Derived type name %qs at %C already has a basic type " | |
10138 | "of %s", gensym->name, gfc_typename (&gensym->ts)); | |
10139 | else | |
10140 | gfc_error ("Derived type name %qs at %C already has a basic type", | |
10141 | gensym->name); | |
c2958b6b | 10142 | return MATCH_ERROR; |
10143 | } | |
10144 | ||
10145 | if (!gensym->attr.generic | |
60e19868 | 10146 | && !gfc_add_generic (&gensym->attr, gensym->name, NULL)) |
c2958b6b | 10147 | return MATCH_ERROR; |
10148 | ||
10149 | if (!gensym->attr.function | |
60e19868 | 10150 | && !gfc_add_function (&gensym->attr, gensym->name, NULL)) |
c2958b6b | 10151 | return MATCH_ERROR; |
10152 | ||
10153 | sym = gfc_find_dt_in_generic (gensym); | |
10154 | ||
10155 | if (sym && (sym->components != NULL || sym->attr.zero_comp)) | |
10156 | { | |
716da296 | 10157 | gfc_error ("Derived type definition of %qs at %C has already been " |
c2958b6b | 10158 | "defined", sym->name); |
4ee9c684 | 10159 | return MATCH_ERROR; |
10160 | } | |
10161 | ||
c2958b6b | 10162 | if (!sym) |
10163 | { | |
10164 | /* Use upper case to save the actual derived-type symbol. */ | |
d7cd448a | 10165 | gfc_get_symbol (gfc_dt_upper_string (gensym->name), NULL, &sym); |
dc326dc0 | 10166 | sym->name = gfc_get_string ("%s", gensym->name); |
c2958b6b | 10167 | head = gensym->generic; |
10168 | intr = gfc_get_interface (); | |
10169 | intr->sym = sym; | |
10170 | intr->where = gfc_current_locus; | |
10171 | intr->sym->declared_at = gfc_current_locus; | |
10172 | intr->next = head; | |
10173 | gensym->generic = intr; | |
10174 | gensym->attr.if_source = IFSRC_DECL; | |
10175 | } | |
10176 | ||
4ee9c684 | 10177 | /* The symbol may already have the derived attribute without the |
10178 | components. The ways this can happen is via a function | |
10179 | definition, an INTRINSIC statement or a subtype in another | |
10180 | derived type that is a pointer. The first part of the AND clause | |
69b1505f | 10181 | is true if the symbol is not the return value of a function. */ |
4ee9c684 | 10182 | if (sym->attr.flavor != FL_DERIVED |
60e19868 | 10183 | && !gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL)) |
4ee9c684 | 10184 | return MATCH_ERROR; |
10185 | ||
4ee9c684 | 10186 | if (attr.access != ACCESS_UNKNOWN |
60e19868 | 10187 | && !gfc_add_access (&sym->attr, attr.access, sym->name, NULL)) |
4ee9c684 | 10188 | return MATCH_ERROR; |
c2958b6b | 10189 | else if (sym->attr.access == ACCESS_UNKNOWN |
10190 | && gensym->attr.access != ACCESS_UNKNOWN | |
76e207a9 | 10191 | && !gfc_add_access (&sym->attr, gensym->attr.access, |
60e19868 | 10192 | sym->name, NULL)) |
c2958b6b | 10193 | return MATCH_ERROR; |
10194 | ||
10195 | if (sym->attr.access != ACCESS_UNKNOWN | |
10196 | && gensym->attr.access == ACCESS_UNKNOWN) | |
10197 | gensym->attr.access = sym->attr.access; | |
4ee9c684 | 10198 | |
c5d33754 | 10199 | /* See if the derived type was labeled as bind(c). */ |
10200 | if (attr.is_bind_c != 0) | |
10201 | sym->attr.is_bind_c = attr.is_bind_c; | |
10202 | ||
223f0f57 | 10203 | /* Construct the f2k_derived namespace if it is not yet there. */ |
10204 | if (!sym->f2k_derived) | |
10205 | sym->f2k_derived = gfc_get_namespace (NULL, 0); | |
8db94b3b | 10206 | |
9d958d5b | 10207 | if (parameterized_type) |
10208 | { | |
f0efd2e8 | 10209 | /* Ignore error or mismatches by going to the end of the statement |
10210 | in order to avoid the component declarations causing problems. */ | |
10211 | m = gfc_match_formal_arglist (sym, 0, 0, true); | |
10212 | if (m != MATCH_YES) | |
10213 | gfc_error_recovery (); | |
9d958d5b | 10214 | m = gfc_match_eos (); |
10215 | if (m != MATCH_YES) | |
8df28d5e | 10216 | { |
10217 | gfc_error_recovery (); | |
10218 | gfc_error_now ("Garbage after PARAMETERIZED TYPE declaration at %C"); | |
10219 | } | |
9d958d5b | 10220 | sym->attr.pdt_template = 1; |
10221 | } | |
10222 | ||
ea94d76d | 10223 | if (extended && !sym->components) |
10224 | { | |
10225 | gfc_component *p; | |
9d958d5b | 10226 | gfc_formal_arglist *f, *g, *h; |
ea94d76d | 10227 | |
10228 | /* Add the extended derived type as the first component. */ | |
10229 | gfc_add_component (sym, parent, &p); | |
ea94d76d | 10230 | extended->refs++; |
10231 | gfc_set_sym_referenced (extended); | |
10232 | ||
10233 | p->ts.type = BT_DERIVED; | |
eeebe20b | 10234 | p->ts.u.derived = extended; |
ea94d76d | 10235 | p->initializer = gfc_default_initializer (&p->ts); |
8db94b3b | 10236 | |
bdfbc762 | 10237 | /* Set extension level. */ |
10238 | if (extended->attr.extension == 255) | |
10239 | { | |
10240 | /* Since the extension field is 8 bit wide, we can only have | |
10241 | up to 255 extension levels. */ | |
716da296 | 10242 | gfc_error ("Maximum extension level reached with type %qs at %L", |
bdfbc762 | 10243 | extended->name, &extended->declared_at); |
10244 | return MATCH_ERROR; | |
10245 | } | |
10246 | sym->attr.extension = extended->attr.extension + 1; | |
ea94d76d | 10247 | |
10248 | /* Provide the links between the extended type and its extension. */ | |
10249 | if (!extended->f2k_derived) | |
10250 | extended->f2k_derived = gfc_get_namespace (NULL, 0); | |
9d958d5b | 10251 | |
10252 | /* Copy the extended type-param-name-list from the extended type, | |
10253 | append those of the extension and add the whole lot to the | |
10254 | extension. */ | |
10255 | if (extended->attr.pdt_template) | |
10256 | { | |
10257 | g = h = NULL; | |
10258 | sym->attr.pdt_template = 1; | |
10259 | for (f = extended->formal; f; f = f->next) | |
10260 | { | |
10261 | if (f == extended->formal) | |
10262 | { | |
10263 | g = gfc_get_formal_arglist (); | |
10264 | h = g; | |
10265 | } | |
10266 | else | |
10267 | { | |
10268 | g->next = gfc_get_formal_arglist (); | |
10269 | g = g->next; | |
10270 | } | |
10271 | g->sym = f->sym; | |
10272 | } | |
10273 | g->next = sym->formal; | |
10274 | sym->formal = h; | |
10275 | } | |
ea94d76d | 10276 | } |
10277 | ||
bdfbc762 | 10278 | if (!sym->hash_value) |
10279 | /* Set the hash for the compound name for this type. */ | |
a656e7c2 | 10280 | sym->hash_value = gfc_hash_value (sym); |
1de1b1a9 | 10281 | |
ac5f2650 | 10282 | /* Take over the ABSTRACT attribute. */ |
10283 | sym->attr.abstract = attr.abstract; | |
10284 | ||
4ee9c684 | 10285 | gfc_new_block = sym; |
10286 | ||
10287 | return MATCH_YES; | |
10288 | } | |
b549d2a5 | 10289 | |
10290 | ||
8db94b3b | 10291 | /* Cray Pointees can be declared as: |
452695a8 | 10292 | pointer (ipt, a (n,m,...,*)) */ |
b549d2a5 | 10293 | |
8458f4ca | 10294 | match |
b549d2a5 | 10295 | gfc_mod_pointee_as (gfc_array_spec *as) |
10296 | { | |
10297 | as->cray_pointee = true; /* This will be useful to know later. */ | |
10298 | if (as->type == AS_ASSUMED_SIZE) | |
452695a8 | 10299 | as->cp_was_assumed = true; |
b549d2a5 | 10300 | else if (as->type == AS_ASSUMED_SHAPE) |
10301 | { | |
10302 | gfc_error ("Cray Pointee at %C cannot be assumed shape array"); | |
10303 | return MATCH_ERROR; | |
10304 | } | |
10305 | return MATCH_YES; | |
10306 | } | |
3b6a4b41 | 10307 | |
10308 | ||
8db94b3b | 10309 | /* Match the enum definition statement, here we are trying to match |
10310 | the first line of enum definition statement. | |
3b6a4b41 | 10311 | Returns MATCH_YES if match is found. */ |
10312 | ||
10313 | match | |
10314 | gfc_match_enum (void) | |
10315 | { | |
10316 | match m; | |
8db94b3b | 10317 | |
3b6a4b41 | 10318 | m = gfc_match_eos (); |
10319 | if (m != MATCH_YES) | |
10320 | return m; | |
10321 | ||
60e19868 | 10322 | if (!gfc_notify_std (GFC_STD_F2003, "ENUM and ENUMERATOR at %C")) |
3b6a4b41 | 10323 | return MATCH_ERROR; |
10324 | ||
10325 | return MATCH_YES; | |
10326 | } | |
10327 | ||
10328 | ||
fe1328da | 10329 | /* Returns an initializer whose value is one higher than the value of the |
10330 | LAST_INITIALIZER argument. If the argument is NULL, the | |
10331 | initializers value will be set to zero. The initializer's kind | |
10332 | will be set to gfc_c_int_kind. | |
10333 | ||
10334 | If -fshort-enums is given, the appropriate kind will be selected | |
10335 | later after all enumerators have been parsed. A warning is issued | |
10336 | here if an initializer exceeds gfc_c_int_kind. */ | |
10337 | ||
10338 | static gfc_expr * | |
10339 | enum_initializer (gfc_expr *last_initializer, locus where) | |
10340 | { | |
10341 | gfc_expr *result; | |
126387b5 | 10342 | result = gfc_get_constant_expr (BT_INTEGER, gfc_c_int_kind, &where); |
fe1328da | 10343 | |
10344 | mpz_init (result->value.integer); | |
10345 | ||
10346 | if (last_initializer != NULL) | |
10347 | { | |
10348 | mpz_add_ui (result->value.integer, last_initializer->value.integer, 1); | |
10349 | result->where = last_initializer->where; | |
10350 | ||
10351 | if (gfc_check_integer_range (result->value.integer, | |
10352 | gfc_c_int_kind) != ARITH_OK) | |
10353 | { | |
10354 | gfc_error ("Enumerator exceeds the C integer type at %C"); | |
10355 | return NULL; | |
10356 | } | |
10357 | } | |
10358 | else | |
10359 | { | |
10360 | /* Control comes here, if it's the very first enumerator and no | |
10361 | initializer has been given. It will be initialized to zero. */ | |
10362 | mpz_set_si (result->value.integer, 0); | |
10363 | } | |
10364 | ||
10365 | return result; | |
10366 | } | |
10367 | ||
10368 | ||
60fbbf9e | 10369 | /* Match a variable name with an optional initializer. When this |
10370 | subroutine is called, a variable is expected to be parsed next. | |
10371 | Depending on what is happening at the moment, updates either the | |
10372 | symbol table or the current interface. */ | |
10373 | ||
10374 | static match | |
10375 | enumerator_decl (void) | |
10376 | { | |
10377 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10378 | gfc_expr *initializer; | |
10379 | gfc_array_spec *as = NULL; | |
10380 | gfc_symbol *sym; | |
10381 | locus var_locus; | |
10382 | match m; | |
60e19868 | 10383 | bool t; |
60fbbf9e | 10384 | locus old_locus; |
10385 | ||
10386 | initializer = NULL; | |
10387 | old_locus = gfc_current_locus; | |
10388 | ||
10389 | /* When we get here, we've just matched a list of attributes and | |
10390 | maybe a type and a double colon. The next thing we expect to see | |
10391 | is the name of the symbol. */ | |
10392 | m = gfc_match_name (name); | |
10393 | if (m != MATCH_YES) | |
10394 | goto cleanup; | |
10395 | ||
10396 | var_locus = gfc_current_locus; | |
10397 | ||
10398 | /* OK, we've successfully matched the declaration. Now put the | |
10399 | symbol in the current namespace. If we fail to create the symbol, | |
10400 | bail out. */ | |
60e19868 | 10401 | if (!build_sym (name, NULL, false, &as, &var_locus)) |
60fbbf9e | 10402 | { |
10403 | m = MATCH_ERROR; | |
10404 | goto cleanup; | |
10405 | } | |
10406 | ||
10407 | /* The double colon must be present in order to have initializers. | |
10408 | Otherwise the statement is ambiguous with an assignment statement. */ | |
10409 | if (colon_seen) | |
10410 | { | |
10411 | if (gfc_match_char ('=') == MATCH_YES) | |
10412 | { | |
10413 | m = gfc_match_init_expr (&initializer); | |
10414 | if (m == MATCH_NO) | |
10415 | { | |
10416 | gfc_error ("Expected an initialization expression at %C"); | |
10417 | m = MATCH_ERROR; | |
10418 | } | |
10419 | ||
10420 | if (m != MATCH_YES) | |
10421 | goto cleanup; | |
10422 | } | |
10423 | } | |
10424 | ||
10425 | /* If we do not have an initializer, the initialization value of the | |
10426 | previous enumerator (stored in last_initializer) is incremented | |
10427 | by 1 and is used to initialize the current enumerator. */ | |
10428 | if (initializer == NULL) | |
fe1328da | 10429 | initializer = enum_initializer (last_initializer, old_locus); |
e14bee04 | 10430 | |
60fbbf9e | 10431 | if (initializer == NULL || initializer->ts.type != BT_INTEGER) |
10432 | { | |
a8beb4f8 | 10433 | gfc_error ("ENUMERATOR %L not initialized with integer expression", |
10434 | &var_locus); | |
e14bee04 | 10435 | m = MATCH_ERROR; |
60fbbf9e | 10436 | goto cleanup; |
10437 | } | |
10438 | ||
10439 | /* Store this current initializer, for the next enumerator variable | |
10440 | to be parsed. add_init_expr_to_sym() zeros initializer, so we | |
10441 | use last_initializer below. */ | |
10442 | last_initializer = initializer; | |
10443 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
10444 | ||
10445 | /* Maintain enumerator history. */ | |
10446 | gfc_find_symbol (name, NULL, 0, &sym); | |
10447 | create_enum_history (sym, last_initializer); | |
10448 | ||
60e19868 | 10449 | return (t) ? MATCH_YES : MATCH_ERROR; |
60fbbf9e | 10450 | |
10451 | cleanup: | |
10452 | /* Free stuff up and return. */ | |
10453 | gfc_free_expr (initializer); | |
10454 | ||
10455 | return m; | |
10456 | } | |
10457 | ||
10458 | ||
f6d0e37a | 10459 | /* Match the enumerator definition statement. */ |
3b6a4b41 | 10460 | |
10461 | match | |
10462 | gfc_match_enumerator_def (void) | |
10463 | { | |
10464 | match m; | |
60e19868 | 10465 | bool t; |
e14bee04 | 10466 | |
3b6a4b41 | 10467 | gfc_clear_ts (¤t_ts); |
e14bee04 | 10468 | |
3b6a4b41 | 10469 | m = gfc_match (" enumerator"); |
10470 | if (m != MATCH_YES) | |
10471 | return m; | |
60fbbf9e | 10472 | |
10473 | m = gfc_match (" :: "); | |
10474 | if (m == MATCH_ERROR) | |
10475 | return m; | |
10476 | ||
10477 | colon_seen = (m == MATCH_YES); | |
e14bee04 | 10478 | |
3b6a4b41 | 10479 | if (gfc_current_state () != COMP_ENUM) |
10480 | { | |
10481 | gfc_error ("ENUM definition statement expected before %C"); | |
10482 | gfc_free_enum_history (); | |
10483 | return MATCH_ERROR; | |
10484 | } | |
10485 | ||
10486 | (¤t_ts)->type = BT_INTEGER; | |
10487 | (¤t_ts)->kind = gfc_c_int_kind; | |
e14bee04 | 10488 | |
60fbbf9e | 10489 | gfc_clear_attr (¤t_attr); |
10490 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, NULL); | |
60e19868 | 10491 | if (!t) |
3b6a4b41 | 10492 | { |
60fbbf9e | 10493 | m = MATCH_ERROR; |
3b6a4b41 | 10494 | goto cleanup; |
10495 | } | |
10496 | ||
3b6a4b41 | 10497 | for (;;) |
10498 | { | |
60fbbf9e | 10499 | m = enumerator_decl (); |
3b6a4b41 | 10500 | if (m == MATCH_ERROR) |
a8beb4f8 | 10501 | { |
10502 | gfc_free_enum_history (); | |
10503 | goto cleanup; | |
10504 | } | |
3b6a4b41 | 10505 | if (m == MATCH_NO) |
10506 | break; | |
10507 | ||
10508 | if (gfc_match_eos () == MATCH_YES) | |
10509 | goto cleanup; | |
10510 | if (gfc_match_char (',') != MATCH_YES) | |
10511 | break; | |
10512 | } | |
10513 | ||
10514 | if (gfc_current_state () == COMP_ENUM) | |
10515 | { | |
10516 | gfc_free_enum_history (); | |
10517 | gfc_error ("Syntax error in ENUMERATOR definition at %C"); | |
10518 | m = MATCH_ERROR; | |
10519 | } | |
10520 | ||
10521 | cleanup: | |
10522 | gfc_free_array_spec (current_as); | |
10523 | current_as = NULL; | |
10524 | return m; | |
10525 | ||
10526 | } | |
10527 | ||
e449e4dd | 10528 | |
7fd88f6e | 10529 | /* Match binding attributes. */ |
10530 | ||
10531 | static match | |
64e93293 | 10532 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc) |
7fd88f6e | 10533 | { |
10534 | bool found_passing = false; | |
64e93293 | 10535 | bool seen_ptr = false; |
fe9b08a2 | 10536 | match m = MATCH_YES; |
7fd88f6e | 10537 | |
df084314 | 10538 | /* Initialize to defaults. Do so even before the MATCH_NO check so that in |
7fd88f6e | 10539 | this case the defaults are in there. */ |
10540 | ba->access = ACCESS_UNKNOWN; | |
10541 | ba->pass_arg = NULL; | |
10542 | ba->pass_arg_num = 0; | |
10543 | ba->nopass = 0; | |
10544 | ba->non_overridable = 0; | |
61c3b81d | 10545 | ba->deferred = 0; |
fe9b08a2 | 10546 | ba->ppc = ppc; |
7fd88f6e | 10547 | |
10548 | /* If we find a comma, we believe there are binding attributes. */ | |
fe9b08a2 | 10549 | m = gfc_match_char (','); |
10550 | if (m == MATCH_NO) | |
10551 | goto done; | |
7fd88f6e | 10552 | |
10553 | do | |
10554 | { | |
e2f06a48 | 10555 | /* Access specifier. */ |
10556 | ||
10557 | m = gfc_match (" public"); | |
7fd88f6e | 10558 | if (m == MATCH_ERROR) |
10559 | goto error; | |
10560 | if (m == MATCH_YES) | |
10561 | { | |
e2f06a48 | 10562 | if (ba->access != ACCESS_UNKNOWN) |
7fd88f6e | 10563 | { |
e2f06a48 | 10564 | gfc_error ("Duplicate access-specifier at %C"); |
7fd88f6e | 10565 | goto error; |
10566 | } | |
10567 | ||
e2f06a48 | 10568 | ba->access = ACCESS_PUBLIC; |
7fd88f6e | 10569 | continue; |
10570 | } | |
10571 | ||
e2f06a48 | 10572 | m = gfc_match (" private"); |
7fd88f6e | 10573 | if (m == MATCH_ERROR) |
10574 | goto error; | |
10575 | if (m == MATCH_YES) | |
10576 | { | |
e2f06a48 | 10577 | if (ba->access != ACCESS_UNKNOWN) |
7fd88f6e | 10578 | { |
e2f06a48 | 10579 | gfc_error ("Duplicate access-specifier at %C"); |
7fd88f6e | 10580 | goto error; |
10581 | } | |
10582 | ||
e2f06a48 | 10583 | ba->access = ACCESS_PRIVATE; |
7fd88f6e | 10584 | continue; |
10585 | } | |
10586 | ||
e2f06a48 | 10587 | /* If inside GENERIC, the following is not allowed. */ |
10588 | if (!generic) | |
7fd88f6e | 10589 | { |
7fd88f6e | 10590 | |
e2f06a48 | 10591 | /* NOPASS flag. */ |
10592 | m = gfc_match (" nopass"); | |
10593 | if (m == MATCH_ERROR) | |
10594 | goto error; | |
10595 | if (m == MATCH_YES) | |
7fd88f6e | 10596 | { |
e2f06a48 | 10597 | if (found_passing) |
10598 | { | |
10599 | gfc_error ("Binding attributes already specify passing," | |
10600 | " illegal NOPASS at %C"); | |
10601 | goto error; | |
10602 | } | |
10603 | ||
10604 | found_passing = true; | |
10605 | ba->nopass = 1; | |
10606 | continue; | |
7fd88f6e | 10607 | } |
10608 | ||
e2f06a48 | 10609 | /* PASS possibly including argument. */ |
10610 | m = gfc_match (" pass"); | |
10611 | if (m == MATCH_ERROR) | |
10612 | goto error; | |
10613 | if (m == MATCH_YES) | |
7fd88f6e | 10614 | { |
e2f06a48 | 10615 | char arg[GFC_MAX_SYMBOL_LEN + 1]; |
10616 | ||
10617 | if (found_passing) | |
10618 | { | |
10619 | gfc_error ("Binding attributes already specify passing," | |
10620 | " illegal PASS at %C"); | |
10621 | goto error; | |
10622 | } | |
10623 | ||
10624 | m = gfc_match (" ( %n )", arg); | |
10625 | if (m == MATCH_ERROR) | |
10626 | goto error; | |
10627 | if (m == MATCH_YES) | |
dc326dc0 | 10628 | ba->pass_arg = gfc_get_string ("%s", arg); |
e2f06a48 | 10629 | gcc_assert ((m == MATCH_YES) == (ba->pass_arg != NULL)); |
10630 | ||
10631 | found_passing = true; | |
10632 | ba->nopass = 0; | |
10633 | continue; | |
7fd88f6e | 10634 | } |
10635 | ||
64e93293 | 10636 | if (ppc) |
10637 | { | |
10638 | /* POINTER flag. */ | |
10639 | m = gfc_match (" pointer"); | |
10640 | if (m == MATCH_ERROR) | |
10641 | goto error; | |
10642 | if (m == MATCH_YES) | |
10643 | { | |
10644 | if (seen_ptr) | |
10645 | { | |
10646 | gfc_error ("Duplicate POINTER attribute at %C"); | |
10647 | goto error; | |
10648 | } | |
10649 | ||
10650 | seen_ptr = true; | |
64e93293 | 10651 | continue; |
10652 | } | |
10653 | } | |
10654 | else | |
10655 | { | |
10656 | /* NON_OVERRIDABLE flag. */ | |
10657 | m = gfc_match (" non_overridable"); | |
10658 | if (m == MATCH_ERROR) | |
10659 | goto error; | |
10660 | if (m == MATCH_YES) | |
10661 | { | |
10662 | if (ba->non_overridable) | |
10663 | { | |
10664 | gfc_error ("Duplicate NON_OVERRIDABLE at %C"); | |
10665 | goto error; | |
10666 | } | |
10667 | ||
10668 | ba->non_overridable = 1; | |
10669 | continue; | |
10670 | } | |
10671 | ||
10672 | /* DEFERRED flag. */ | |
10673 | m = gfc_match (" deferred"); | |
10674 | if (m == MATCH_ERROR) | |
10675 | goto error; | |
10676 | if (m == MATCH_YES) | |
10677 | { | |
10678 | if (ba->deferred) | |
10679 | { | |
10680 | gfc_error ("Duplicate DEFERRED at %C"); | |
10681 | goto error; | |
10682 | } | |
10683 | ||
10684 | ba->deferred = 1; | |
10685 | continue; | |
10686 | } | |
10687 | } | |
10688 | ||
7fd88f6e | 10689 | } |
10690 | ||
10691 | /* Nothing matching found. */ | |
e2f06a48 | 10692 | if (generic) |
10693 | gfc_error ("Expected access-specifier at %C"); | |
10694 | else | |
10695 | gfc_error ("Expected binding attribute at %C"); | |
7fd88f6e | 10696 | goto error; |
10697 | } | |
10698 | while (gfc_match_char (',') == MATCH_YES); | |
10699 | ||
61c3b81d | 10700 | /* NON_OVERRIDABLE and DEFERRED exclude themselves. */ |
10701 | if (ba->non_overridable && ba->deferred) | |
10702 | { | |
10703 | gfc_error ("NON_OVERRIDABLE and DEFERRED can't both appear at %C"); | |
10704 | goto error; | |
10705 | } | |
10706 | ||
fe9b08a2 | 10707 | m = MATCH_YES; |
10708 | ||
10709 | done: | |
e2f06a48 | 10710 | if (ba->access == ACCESS_UNKNOWN) |
c41ff969 | 10711 | ba->access = ppc ? gfc_current_block()->component_access |
10712 | : gfc_typebound_default_access; | |
e2f06a48 | 10713 | |
64e93293 | 10714 | if (ppc && !seen_ptr) |
10715 | { | |
10716 | gfc_error ("POINTER attribute is required for procedure pointer component" | |
10717 | " at %C"); | |
10718 | goto error; | |
10719 | } | |
10720 | ||
fe9b08a2 | 10721 | return m; |
7fd88f6e | 10722 | |
10723 | error: | |
7fd88f6e | 10724 | return MATCH_ERROR; |
10725 | } | |
10726 | ||
10727 | ||
10728 | /* Match a PROCEDURE specific binding inside a derived type. */ | |
10729 | ||
10730 | static match | |
10731 | match_procedure_in_type (void) | |
10732 | { | |
10733 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10734 | char target_buf[GFC_MAX_SYMBOL_LEN + 1]; | |
7a3aaef8 | 10735 | char* target = NULL, *ifc = NULL; |
4a12b9ba | 10736 | gfc_typebound_proc tb; |
7fd88f6e | 10737 | bool seen_colons; |
10738 | bool seen_attrs; | |
10739 | match m; | |
10740 | gfc_symtree* stree; | |
10741 | gfc_namespace* ns; | |
10742 | gfc_symbol* block; | |
7a3aaef8 | 10743 | int num; |
7fd88f6e | 10744 | |
10745 | /* Check current state. */ | |
10746 | gcc_assert (gfc_state_stack->state == COMP_DERIVED_CONTAINS); | |
10747 | block = gfc_state_stack->previous->sym; | |
10748 | gcc_assert (block); | |
10749 | ||
61c3b81d | 10750 | /* Try to match PROCEDURE(interface). */ |
7fd88f6e | 10751 | if (gfc_match (" (") == MATCH_YES) |
10752 | { | |
61c3b81d | 10753 | m = gfc_match_name (target_buf); |
10754 | if (m == MATCH_ERROR) | |
10755 | return m; | |
10756 | if (m != MATCH_YES) | |
10757 | { | |
0d2b3c9c | 10758 | gfc_error ("Interface-name expected after %<(%> at %C"); |
61c3b81d | 10759 | return MATCH_ERROR; |
10760 | } | |
10761 | ||
10762 | if (gfc_match (" )") != MATCH_YES) | |
10763 | { | |
0d2b3c9c | 10764 | gfc_error ("%<)%> expected at %C"); |
61c3b81d | 10765 | return MATCH_ERROR; |
10766 | } | |
10767 | ||
7a3aaef8 | 10768 | ifc = target_buf; |
7fd88f6e | 10769 | } |
10770 | ||
10771 | /* Construct the data structure. */ | |
b3d1387f | 10772 | memset (&tb, 0, sizeof (tb)); |
4a12b9ba | 10773 | tb.where = gfc_current_locus; |
7fd88f6e | 10774 | |
10775 | /* Match binding attributes. */ | |
4a12b9ba | 10776 | m = match_binding_attributes (&tb, false, false); |
7fd88f6e | 10777 | if (m == MATCH_ERROR) |
10778 | return m; | |
10779 | seen_attrs = (m == MATCH_YES); | |
10780 | ||
7a3aaef8 | 10781 | /* Check that attribute DEFERRED is given if an interface is specified. */ |
4a12b9ba | 10782 | if (tb.deferred && !ifc) |
61c3b81d | 10783 | { |
10784 | gfc_error ("Interface must be specified for DEFERRED binding at %C"); | |
10785 | return MATCH_ERROR; | |
10786 | } | |
4a12b9ba | 10787 | if (ifc && !tb.deferred) |
61c3b81d | 10788 | { |
10789 | gfc_error ("PROCEDURE(interface) at %C should be declared DEFERRED"); | |
10790 | return MATCH_ERROR; | |
10791 | } | |
10792 | ||
7fd88f6e | 10793 | /* Match the colons. */ |
10794 | m = gfc_match (" ::"); | |
10795 | if (m == MATCH_ERROR) | |
10796 | return m; | |
10797 | seen_colons = (m == MATCH_YES); | |
10798 | if (seen_attrs && !seen_colons) | |
10799 | { | |
0d2b3c9c | 10800 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
7fd88f6e | 10801 | return MATCH_ERROR; |
10802 | } | |
10803 | ||
8db94b3b | 10804 | /* Match the binding names. */ |
7a3aaef8 | 10805 | for(num=1;;num++) |
7fd88f6e | 10806 | { |
7a3aaef8 | 10807 | m = gfc_match_name (name); |
10808 | if (m == MATCH_ERROR) | |
10809 | return m; | |
10810 | if (m == MATCH_NO) | |
61c3b81d | 10811 | { |
7a3aaef8 | 10812 | gfc_error ("Expected binding name at %C"); |
61c3b81d | 10813 | return MATCH_ERROR; |
10814 | } | |
10815 | ||
60e19868 | 10816 | if (num>1 && !gfc_notify_std (GFC_STD_F2008, "PROCEDURE list at %C")) |
7a3aaef8 | 10817 | return MATCH_ERROR; |
7fd88f6e | 10818 | |
7a3aaef8 | 10819 | /* Try to match the '=> target', if it's there. */ |
10820 | target = ifc; | |
10821 | m = gfc_match (" =>"); | |
7fd88f6e | 10822 | if (m == MATCH_ERROR) |
10823 | return m; | |
7a3aaef8 | 10824 | if (m == MATCH_YES) |
7fd88f6e | 10825 | { |
4a12b9ba | 10826 | if (tb.deferred) |
7a3aaef8 | 10827 | { |
0d2b3c9c | 10828 | gfc_error ("%<=> target%> is invalid for DEFERRED binding at %C"); |
7a3aaef8 | 10829 | return MATCH_ERROR; |
10830 | } | |
10831 | ||
10832 | if (!seen_colons) | |
10833 | { | |
0d2b3c9c | 10834 | gfc_error ("%<::%> needed in PROCEDURE binding with explicit target" |
7a3aaef8 | 10835 | " at %C"); |
10836 | return MATCH_ERROR; | |
10837 | } | |
10838 | ||
10839 | m = gfc_match_name (target_buf); | |
10840 | if (m == MATCH_ERROR) | |
10841 | return m; | |
10842 | if (m == MATCH_NO) | |
10843 | { | |
0d2b3c9c | 10844 | gfc_error ("Expected binding target after %<=>%> at %C"); |
7a3aaef8 | 10845 | return MATCH_ERROR; |
10846 | } | |
10847 | target = target_buf; | |
7fd88f6e | 10848 | } |
7fd88f6e | 10849 | |
7a3aaef8 | 10850 | /* If no target was found, it has the same name as the binding. */ |
10851 | if (!target) | |
10852 | target = name; | |
7fd88f6e | 10853 | |
7a3aaef8 | 10854 | /* Get the namespace to insert the symbols into. */ |
10855 | ns = block->f2k_derived; | |
10856 | gcc_assert (ns); | |
7fd88f6e | 10857 | |
7a3aaef8 | 10858 | /* If the binding is DEFERRED, check that the containing type is ABSTRACT. */ |
4a12b9ba | 10859 | if (tb.deferred && !block->attr.abstract) |
7a3aaef8 | 10860 | { |
716da296 | 10861 | gfc_error ("Type %qs containing DEFERRED binding at %C " |
7a3aaef8 | 10862 | "is not ABSTRACT", block->name); |
10863 | return MATCH_ERROR; | |
10864 | } | |
7fd88f6e | 10865 | |
7a3aaef8 | 10866 | /* See if we already have a binding with this name in the symtree which |
9834e1b6 | 10867 | would be an error. If a GENERIC already targeted this binding, it may |
7a3aaef8 | 10868 | be already there but then typebound is still NULL. */ |
10869 | stree = gfc_find_symtree (ns->tb_sym_root, name); | |
e204cb62 | 10870 | if (stree && stree->n.tb) |
7a3aaef8 | 10871 | { |
716da296 | 10872 | gfc_error ("There is already a procedure with binding name %qs for " |
10873 | "the derived type %qs at %C", name, block->name); | |
7a3aaef8 | 10874 | return MATCH_ERROR; |
10875 | } | |
61c3b81d | 10876 | |
7a3aaef8 | 10877 | /* Insert it and set attributes. */ |
7fd88f6e | 10878 | |
e204cb62 | 10879 | if (!stree) |
10880 | { | |
10881 | stree = gfc_new_symtree (&ns->tb_sym_root, name); | |
10882 | gcc_assert (stree); | |
10883 | } | |
4a12b9ba | 10884 | stree->n.tb = gfc_get_typebound_proc (&tb); |
3323e9b1 | 10885 | |
4a12b9ba | 10886 | if (gfc_get_sym_tree (target, gfc_current_ns, &stree->n.tb->u.specific, |
10887 | false)) | |
7a3aaef8 | 10888 | return MATCH_ERROR; |
4a12b9ba | 10889 | gfc_set_sym_referenced (stree->n.tb->u.specific->n.sym); |
1f302f2e | 10890 | gfc_add_flavor(&stree->n.tb->u.specific->n.sym->attr, FL_PROCEDURE, |
10891 | target, &stree->n.tb->u.specific->n.sym->declared_at); | |
8db94b3b | 10892 | |
7a3aaef8 | 10893 | if (gfc_match_eos () == MATCH_YES) |
10894 | return MATCH_YES; | |
10895 | if (gfc_match_char (',') != MATCH_YES) | |
10896 | goto syntax; | |
3323e9b1 | 10897 | } |
7fd88f6e | 10898 | |
7a3aaef8 | 10899 | syntax: |
10900 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
10901 | return MATCH_ERROR; | |
7fd88f6e | 10902 | } |
10903 | ||
10904 | ||
e2f06a48 | 10905 | /* Match a GENERIC procedure binding inside a derived type. */ |
10906 | ||
10907 | match | |
10908 | gfc_match_generic (void) | |
10909 | { | |
10910 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
a36eb9ee | 10911 | char bind_name[GFC_MAX_SYMBOL_LEN + 16]; /* Allow space for OPERATOR(...). */ |
e2f06a48 | 10912 | gfc_symbol* block; |
10913 | gfc_typebound_proc tbattr; /* Used for match_binding_attributes. */ | |
10914 | gfc_typebound_proc* tb; | |
e2f06a48 | 10915 | gfc_namespace* ns; |
a36eb9ee | 10916 | interface_type op_type; |
10917 | gfc_intrinsic_op op; | |
e2f06a48 | 10918 | match m; |
10919 | ||
10920 | /* Check current state. */ | |
10921 | if (gfc_current_state () == COMP_DERIVED) | |
10922 | { | |
10923 | gfc_error ("GENERIC at %C must be inside a derived-type CONTAINS"); | |
10924 | return MATCH_ERROR; | |
10925 | } | |
10926 | if (gfc_current_state () != COMP_DERIVED_CONTAINS) | |
10927 | return MATCH_NO; | |
10928 | block = gfc_state_stack->previous->sym; | |
10929 | ns = block->f2k_derived; | |
10930 | gcc_assert (block && ns); | |
10931 | ||
b3d1387f | 10932 | memset (&tbattr, 0, sizeof (tbattr)); |
10933 | tbattr.where = gfc_current_locus; | |
10934 | ||
e2f06a48 | 10935 | /* See if we get an access-specifier. */ |
64e93293 | 10936 | m = match_binding_attributes (&tbattr, true, false); |
e2f06a48 | 10937 | if (m == MATCH_ERROR) |
10938 | goto error; | |
10939 | ||
10940 | /* Now the colons, those are required. */ | |
10941 | if (gfc_match (" ::") != MATCH_YES) | |
10942 | { | |
0d2b3c9c | 10943 | gfc_error ("Expected %<::%> at %C"); |
e2f06a48 | 10944 | goto error; |
10945 | } | |
10946 | ||
a36eb9ee | 10947 | /* Match the binding name; depending on type (operator / generic) format |
10948 | it for future error messages into bind_name. */ | |
8db94b3b | 10949 | |
a36eb9ee | 10950 | m = gfc_match_generic_spec (&op_type, name, &op); |
e2f06a48 | 10951 | if (m == MATCH_ERROR) |
10952 | return MATCH_ERROR; | |
10953 | if (m == MATCH_NO) | |
10954 | { | |
a36eb9ee | 10955 | gfc_error ("Expected generic name or operator descriptor at %C"); |
e2f06a48 | 10956 | goto error; |
10957 | } | |
10958 | ||
a36eb9ee | 10959 | switch (op_type) |
e2f06a48 | 10960 | { |
a36eb9ee | 10961 | case INTERFACE_GENERIC: |
9f732c4e | 10962 | case INTERFACE_DTIO: |
a36eb9ee | 10963 | snprintf (bind_name, sizeof (bind_name), "%s", name); |
10964 | break; | |
8db94b3b | 10965 | |
a36eb9ee | 10966 | case INTERFACE_USER_OP: |
10967 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(.%s.)", name); | |
10968 | break; | |
8db94b3b | 10969 | |
a36eb9ee | 10970 | case INTERFACE_INTRINSIC_OP: |
10971 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(%s)", | |
10972 | gfc_op2string (op)); | |
10973 | break; | |
10974 | ||
7e8f55c1 | 10975 | case INTERFACE_NAMELESS: |
10976 | gfc_error ("Malformed GENERIC statement at %C"); | |
10977 | goto error; | |
10978 | break; | |
10979 | ||
a36eb9ee | 10980 | default: |
10981 | gcc_unreachable (); | |
10982 | } | |
3323e9b1 | 10983 | |
a36eb9ee | 10984 | /* Match the required =>. */ |
10985 | if (gfc_match (" =>") != MATCH_YES) | |
10986 | { | |
0d2b3c9c | 10987 | gfc_error ("Expected %<=>%> at %C"); |
a36eb9ee | 10988 | goto error; |
10989 | } | |
8db94b3b | 10990 | |
a36eb9ee | 10991 | /* Try to find existing GENERIC binding with this name / for this operator; |
10992 | if there is something, check that it is another GENERIC and then extend | |
10993 | it rather than building a new node. Otherwise, create it and put it | |
10994 | at the right position. */ | |
10995 | ||
10996 | switch (op_type) | |
10997 | { | |
9f732c4e | 10998 | case INTERFACE_DTIO: |
a36eb9ee | 10999 | case INTERFACE_USER_OP: |
11000 | case INTERFACE_GENERIC: | |
11001 | { | |
11002 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
11003 | gfc_symtree* st; | |
11004 | ||
11005 | st = gfc_find_symtree (is_op ? ns->tb_uop_root : ns->tb_sym_root, name); | |
f7b2c82b | 11006 | tb = st ? st->n.tb : NULL; |
a36eb9ee | 11007 | break; |
11008 | } | |
11009 | ||
11010 | case INTERFACE_INTRINSIC_OP: | |
11011 | tb = ns->tb_op[op]; | |
11012 | break; | |
11013 | ||
11014 | default: | |
11015 | gcc_unreachable (); | |
11016 | } | |
11017 | ||
11018 | if (tb) | |
11019 | { | |
3323e9b1 | 11020 | if (!tb->is_generic) |
e2f06a48 | 11021 | { |
a36eb9ee | 11022 | gcc_assert (op_type == INTERFACE_GENERIC); |
e2f06a48 | 11023 | gfc_error ("There's already a non-generic procedure with binding name" |
716da296 | 11024 | " %qs for the derived type %qs at %C", |
a36eb9ee | 11025 | bind_name, block->name); |
e2f06a48 | 11026 | goto error; |
11027 | } | |
11028 | ||
e2f06a48 | 11029 | if (tb->access != tbattr.access) |
11030 | { | |
11031 | gfc_error ("Binding at %C must have the same access as already" | |
716da296 | 11032 | " defined binding %qs", bind_name); |
e2f06a48 | 11033 | goto error; |
11034 | } | |
11035 | } | |
11036 | else | |
11037 | { | |
4a12b9ba | 11038 | tb = gfc_get_typebound_proc (NULL); |
e2f06a48 | 11039 | tb->where = gfc_current_locus; |
11040 | tb->access = tbattr.access; | |
11041 | tb->is_generic = 1; | |
11042 | tb->u.generic = NULL; | |
a36eb9ee | 11043 | |
11044 | switch (op_type) | |
11045 | { | |
9f732c4e | 11046 | case INTERFACE_DTIO: |
a36eb9ee | 11047 | case INTERFACE_GENERIC: |
11048 | case INTERFACE_USER_OP: | |
11049 | { | |
11050 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
f7b2c82b | 11051 | gfc_symtree* st = gfc_get_tbp_symtree (is_op ? &ns->tb_uop_root : |
11052 | &ns->tb_sym_root, name); | |
a36eb9ee | 11053 | gcc_assert (st); |
11054 | st->n.tb = tb; | |
11055 | ||
11056 | break; | |
11057 | } | |
8db94b3b | 11058 | |
a36eb9ee | 11059 | case INTERFACE_INTRINSIC_OP: |
11060 | ns->tb_op[op] = tb; | |
11061 | break; | |
11062 | ||
11063 | default: | |
11064 | gcc_unreachable (); | |
11065 | } | |
e2f06a48 | 11066 | } |
11067 | ||
11068 | /* Now, match all following names as specific targets. */ | |
11069 | do | |
11070 | { | |
11071 | gfc_symtree* target_st; | |
11072 | gfc_tbp_generic* target; | |
11073 | ||
11074 | m = gfc_match_name (name); | |
11075 | if (m == MATCH_ERROR) | |
11076 | goto error; | |
11077 | if (m == MATCH_NO) | |
11078 | { | |
11079 | gfc_error ("Expected specific binding name at %C"); | |
11080 | goto error; | |
11081 | } | |
11082 | ||
3323e9b1 | 11083 | target_st = gfc_get_tbp_symtree (&ns->tb_sym_root, name); |
e2f06a48 | 11084 | |
11085 | /* See if this is a duplicate specification. */ | |
11086 | for (target = tb->u.generic; target; target = target->next) | |
11087 | if (target_st == target->specific_st) | |
11088 | { | |
716da296 | 11089 | gfc_error ("%qs already defined as specific binding for the" |
11090 | " generic %qs at %C", name, bind_name); | |
e2f06a48 | 11091 | goto error; |
11092 | } | |
11093 | ||
e2f06a48 | 11094 | target = gfc_get_tbp_generic (); |
11095 | target->specific_st = target_st; | |
11096 | target->specific = NULL; | |
11097 | target->next = tb->u.generic; | |
5c0f7d99 | 11098 | target->is_operator = ((op_type == INTERFACE_USER_OP) |
11099 | || (op_type == INTERFACE_INTRINSIC_OP)); | |
e2f06a48 | 11100 | tb->u.generic = target; |
11101 | } | |
11102 | while (gfc_match (" ,") == MATCH_YES); | |
11103 | ||
11104 | /* Here should be the end. */ | |
11105 | if (gfc_match_eos () != MATCH_YES) | |
11106 | { | |
11107 | gfc_error ("Junk after GENERIC binding at %C"); | |
11108 | goto error; | |
11109 | } | |
11110 | ||
11111 | return MATCH_YES; | |
11112 | ||
11113 | error: | |
11114 | return MATCH_ERROR; | |
11115 | } | |
11116 | ||
11117 | ||
223f0f57 | 11118 | /* Match a FINAL declaration inside a derived type. */ |
11119 | ||
11120 | match | |
11121 | gfc_match_final_decl (void) | |
11122 | { | |
11123 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
11124 | gfc_symbol* sym; | |
11125 | match m; | |
11126 | gfc_namespace* module_ns; | |
11127 | bool first, last; | |
7fd88f6e | 11128 | gfc_symbol* block; |
223f0f57 | 11129 | |
519651c1 | 11130 | if (gfc_current_form == FORM_FREE) |
11131 | { | |
11132 | char c = gfc_peek_ascii_char (); | |
11133 | if (!gfc_is_whitespace (c) && c != ':') | |
11134 | return MATCH_NO; | |
11135 | } | |
8db94b3b | 11136 | |
7fd88f6e | 11137 | if (gfc_state_stack->state != COMP_DERIVED_CONTAINS) |
223f0f57 | 11138 | { |
519651c1 | 11139 | if (gfc_current_form == FORM_FIXED) |
11140 | return MATCH_NO; | |
11141 | ||
223f0f57 | 11142 | gfc_error ("FINAL declaration at %C must be inside a derived type " |
7fd88f6e | 11143 | "CONTAINS section"); |
223f0f57 | 11144 | return MATCH_ERROR; |
11145 | } | |
11146 | ||
7fd88f6e | 11147 | block = gfc_state_stack->previous->sym; |
11148 | gcc_assert (block); | |
223f0f57 | 11149 | |
7fd88f6e | 11150 | if (!gfc_state_stack->previous || !gfc_state_stack->previous->previous |
11151 | || gfc_state_stack->previous->previous->state != COMP_MODULE) | |
223f0f57 | 11152 | { |
11153 | gfc_error ("Derived type declaration with FINAL at %C must be in the" | |
11154 | " specification part of a MODULE"); | |
11155 | return MATCH_ERROR; | |
11156 | } | |
11157 | ||
11158 | module_ns = gfc_current_ns; | |
11159 | gcc_assert (module_ns); | |
11160 | gcc_assert (module_ns->proc_name->attr.flavor == FL_MODULE); | |
11161 | ||
11162 | /* Match optional ::, don't care about MATCH_YES or MATCH_NO. */ | |
11163 | if (gfc_match (" ::") == MATCH_ERROR) | |
11164 | return MATCH_ERROR; | |
11165 | ||
11166 | /* Match the sequence of procedure names. */ | |
11167 | first = true; | |
11168 | last = false; | |
11169 | do | |
11170 | { | |
11171 | gfc_finalizer* f; | |
11172 | ||
11173 | if (first && gfc_match_eos () == MATCH_YES) | |
11174 | { | |
11175 | gfc_error ("Empty FINAL at %C"); | |
11176 | return MATCH_ERROR; | |
11177 | } | |
11178 | ||
11179 | m = gfc_match_name (name); | |
11180 | if (m == MATCH_NO) | |
11181 | { | |
11182 | gfc_error ("Expected module procedure name at %C"); | |
11183 | return MATCH_ERROR; | |
11184 | } | |
11185 | else if (m != MATCH_YES) | |
11186 | return MATCH_ERROR; | |
11187 | ||
11188 | if (gfc_match_eos () == MATCH_YES) | |
11189 | last = true; | |
11190 | if (!last && gfc_match_char (',') != MATCH_YES) | |
11191 | { | |
0d2b3c9c | 11192 | gfc_error ("Expected %<,%> at %C"); |
223f0f57 | 11193 | return MATCH_ERROR; |
11194 | } | |
11195 | ||
11196 | if (gfc_get_symbol (name, module_ns, &sym)) | |
11197 | { | |
716da296 | 11198 | gfc_error ("Unknown procedure name %qs at %C", name); |
223f0f57 | 11199 | return MATCH_ERROR; |
11200 | } | |
11201 | ||
11202 | /* Mark the symbol as module procedure. */ | |
11203 | if (sym->attr.proc != PROC_MODULE | |
60e19868 | 11204 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
223f0f57 | 11205 | return MATCH_ERROR; |
11206 | ||
11207 | /* Check if we already have this symbol in the list, this is an error. */ | |
7fd88f6e | 11208 | for (f = block->f2k_derived->finalizers; f; f = f->next) |
e449e4dd | 11209 | if (f->proc_sym == sym) |
223f0f57 | 11210 | { |
c2a4993a | 11211 | gfc_error ("%qs at %C is already defined as FINAL procedure", |
223f0f57 | 11212 | name); |
11213 | return MATCH_ERROR; | |
11214 | } | |
11215 | ||
11216 | /* Add this symbol to the list of finalizers. */ | |
7fd88f6e | 11217 | gcc_assert (block->f2k_derived); |
c77c84dd | 11218 | sym->refs++; |
48d8ad5a | 11219 | f = XCNEW (gfc_finalizer); |
e449e4dd | 11220 | f->proc_sym = sym; |
11221 | f->proc_tree = NULL; | |
223f0f57 | 11222 | f->where = gfc_current_locus; |
7fd88f6e | 11223 | f->next = block->f2k_derived->finalizers; |
11224 | block->f2k_derived->finalizers = f; | |
223f0f57 | 11225 | |
11226 | first = false; | |
11227 | } | |
11228 | while (!last); | |
11229 | ||
11230 | return MATCH_YES; | |
11231 | } | |
36b0a1b0 | 11232 | |
11233 | ||
11234 | const ext_attr_t ext_attr_list[] = { | |
fa76a552 | 11235 | { "dllimport", EXT_ATTR_DLLIMPORT, "dllimport" }, |
11236 | { "dllexport", EXT_ATTR_DLLEXPORT, "dllexport" }, | |
11237 | { "cdecl", EXT_ATTR_CDECL, "cdecl" }, | |
11238 | { "stdcall", EXT_ATTR_STDCALL, "stdcall" }, | |
11239 | { "fastcall", EXT_ATTR_FASTCALL, "fastcall" }, | |
11240 | { "no_arg_check", EXT_ATTR_NO_ARG_CHECK, NULL }, | |
11241 | { NULL, EXT_ATTR_LAST, NULL } | |
36b0a1b0 | 11242 | }; |
11243 | ||
11244 | /* Match a !GCC$ ATTRIBUTES statement of the form: | |
11245 | !GCC$ ATTRIBUTES attribute-list :: var-name [, var-name] ... | |
11246 | When we come here, we have already matched the !GCC$ ATTRIBUTES string. | |
11247 | ||
11248 | TODO: We should support all GCC attributes using the same syntax for | |
11249 | the attribute list, i.e. the list in C | |
11250 | __attributes(( attribute-list )) | |
11251 | matches then | |
11252 | !GCC$ ATTRIBUTES attribute-list :: | |
11253 | Cf. c-parser.c's c_parser_attributes; the data can then directly be | |
11254 | saved into a TREE. | |
11255 | ||
11256 | As there is absolutely no risk of confusion, we should never return | |
11257 | MATCH_NO. */ | |
11258 | match | |
11259 | gfc_match_gcc_attributes (void) | |
8db94b3b | 11260 | { |
36b0a1b0 | 11261 | symbol_attribute attr; |
11262 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
11263 | unsigned id; | |
11264 | gfc_symbol *sym; | |
11265 | match m; | |
11266 | ||
11267 | gfc_clear_attr (&attr); | |
11268 | for(;;) | |
11269 | { | |
11270 | char ch; | |
11271 | ||
11272 | if (gfc_match_name (name) != MATCH_YES) | |
11273 | return MATCH_ERROR; | |
11274 | ||
11275 | for (id = 0; id < EXT_ATTR_LAST; id++) | |
11276 | if (strcmp (name, ext_attr_list[id].name) == 0) | |
11277 | break; | |
11278 | ||
11279 | if (id == EXT_ATTR_LAST) | |
11280 | { | |
11281 | gfc_error ("Unknown attribute in !GCC$ ATTRIBUTES statement at %C"); | |
11282 | return MATCH_ERROR; | |
11283 | } | |
11284 | ||
60e19868 | 11285 | if (!gfc_add_ext_attribute (&attr, (ext_attr_id_t)id, &gfc_current_locus)) |
36b0a1b0 | 11286 | return MATCH_ERROR; |
11287 | ||
11288 | gfc_gobble_whitespace (); | |
11289 | ch = gfc_next_ascii_char (); | |
11290 | if (ch == ':') | |
11291 | { | |
11292 | /* This is the successful exit condition for the loop. */ | |
11293 | if (gfc_next_ascii_char () == ':') | |
11294 | break; | |
11295 | } | |
11296 | ||
11297 | if (ch == ',') | |
11298 | continue; | |
11299 | ||
11300 | goto syntax; | |
11301 | } | |
11302 | ||
11303 | if (gfc_match_eos () == MATCH_YES) | |
11304 | goto syntax; | |
11305 | ||
11306 | for(;;) | |
11307 | { | |
11308 | m = gfc_match_name (name); | |
11309 | if (m != MATCH_YES) | |
11310 | return m; | |
11311 | ||
11312 | if (find_special (name, &sym, true)) | |
11313 | return MATCH_ERROR; | |
8db94b3b | 11314 | |
36b0a1b0 | 11315 | sym->attr.ext_attr |= attr.ext_attr; |
11316 | ||
11317 | if (gfc_match_eos () == MATCH_YES) | |
11318 | break; | |
11319 | ||
11320 | if (gfc_match_char (',') != MATCH_YES) | |
11321 | goto syntax; | |
11322 | } | |
11323 | ||
11324 | return MATCH_YES; | |
11325 | ||
11326 | syntax: | |
11327 | gfc_error ("Syntax error in !GCC$ ATTRIBUTES statement at %C"); | |
11328 | return MATCH_ERROR; | |
11329 | } | |
82841c8f | 11330 | |
11331 | ||
11332 | /* Match a !GCC$ UNROLL statement of the form: | |
11333 | !GCC$ UNROLL n | |
11334 | ||
11335 | The parameter n is the number of times we are supposed to unroll. | |
11336 | ||
11337 | When we come here, we have already matched the !GCC$ UNROLL string. */ | |
11338 | match | |
11339 | gfc_match_gcc_unroll (void) | |
11340 | { | |
11341 | int value; | |
11342 | ||
11343 | if (gfc_match_small_int (&value) == MATCH_YES) | |
11344 | { | |
11345 | if (value < 0 || value > USHRT_MAX) | |
11346 | { | |
11347 | gfc_error ("%<GCC unroll%> directive requires a" | |
11348 | " non-negative integral constant" | |
11349 | " less than or equal to %u at %C", | |
11350 | USHRT_MAX | |
11351 | ); | |
11352 | return MATCH_ERROR; | |
11353 | } | |
11354 | if (gfc_match_eos () == MATCH_YES) | |
11355 | { | |
11356 | directive_unroll = value == 0 ? 1 : value; | |
11357 | return MATCH_YES; | |
11358 | } | |
11359 | } | |
11360 | ||
11361 | gfc_error ("Syntax error in !GCC$ UNROLL directive at %C"); | |
11362 | return MATCH_ERROR; | |
11363 | } | |
f052211c | 11364 | |
dd2e9d21 | 11365 | /* Match a !GCC$ builtin (b) attributes simd flags if('target') form: |
f052211c | 11366 | |
11367 | The parameter b is name of a middle-end built-in. | |
dd2e9d21 | 11368 | FLAGS is optional and must be one of: |
11369 | - (inbranch) | |
11370 | - (notinbranch) | |
11371 | ||
11372 | IF('target') is optional and TARGET is a name of a multilib ABI. | |
f052211c | 11373 | |
11374 | When we come here, we have already matched the !GCC$ builtin string. */ | |
dd2e9d21 | 11375 | |
f052211c | 11376 | match |
11377 | gfc_match_gcc_builtin (void) | |
11378 | { | |
11379 | char builtin[GFC_MAX_SYMBOL_LEN + 1]; | |
dd2e9d21 | 11380 | char target[GFC_MAX_SYMBOL_LEN + 1]; |
f052211c | 11381 | |
11382 | if (gfc_match (" ( %n ) attributes simd", builtin) != MATCH_YES) | |
11383 | return MATCH_ERROR; | |
11384 | ||
11385 | gfc_simd_clause clause = SIMD_NONE; | |
11386 | if (gfc_match (" ( notinbranch ) ") == MATCH_YES) | |
11387 | clause = SIMD_NOTINBRANCH; | |
11388 | else if (gfc_match (" ( inbranch ) ") == MATCH_YES) | |
11389 | clause = SIMD_INBRANCH; | |
11390 | ||
dd2e9d21 | 11391 | if (gfc_match (" if ( '%n' ) ", target) == MATCH_YES) |
11392 | { | |
11393 | const char *abi = targetm.get_multilib_abi_name (); | |
11394 | if (abi == NULL || strcmp (abi, target) != 0) | |
11395 | return MATCH_YES; | |
11396 | } | |
11397 | ||
f052211c | 11398 | if (gfc_vectorized_builtins == NULL) |
11399 | gfc_vectorized_builtins = new hash_map<nofree_string_hash, int> (); | |
11400 | ||
11401 | char *r = XNEWVEC (char, strlen (builtin) + 32); | |
11402 | sprintf (r, "__builtin_%s", builtin); | |
11403 | ||
11404 | bool existed; | |
11405 | int &value = gfc_vectorized_builtins->get_or_insert (r, &existed); | |
11406 | value |= clause; | |
11407 | if (existed) | |
11408 | free (r); | |
11409 | ||
11410 | return MATCH_YES; | |
11411 | } |