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4ee9c684 | 1 | /* Declaration statement matcher |
8e8f6434 | 2 | Copyright (C) 2002-2018 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" |
cbbac028 | 31 | |
32 | /* Macros to access allocate memory for gfc_data_variable, | |
33 | gfc_data_value and gfc_data. */ | |
48d8ad5a | 34 | #define gfc_get_data_variable() XCNEW (gfc_data_variable) |
35 | #define gfc_get_data_value() XCNEW (gfc_data_value) | |
36 | #define gfc_get_data() XCNEW (gfc_data) | |
cbbac028 | 37 | |
38 | ||
60e19868 | 39 | static bool set_binding_label (const char **, const char *, int); |
7b2060ba | 40 | |
41 | ||
36ae04f2 | 42 | /* This flag is set if an old-style length selector is matched |
4ee9c684 | 43 | during a type-declaration statement. */ |
44 | ||
45 | static int old_char_selector; | |
46 | ||
5739e54e | 47 | /* When variables acquire types and attributes from a declaration |
4ee9c684 | 48 | statement, they get them from the following static variables. The |
49 | first part of a declaration sets these variables and the second | |
50 | part copies these into symbol structures. */ | |
51 | ||
52 | static gfc_typespec current_ts; | |
53 | ||
54 | static symbol_attribute current_attr; | |
55 | static gfc_array_spec *current_as; | |
56 | static int colon_seen; | |
8ef2cf76 | 57 | static int attr_seen; |
4ee9c684 | 58 | |
c5d33754 | 59 | /* The current binding label (if any). */ |
1d8a57d8 | 60 | static const char* curr_binding_label; |
c5d33754 | 61 | /* Need to know how many identifiers are on the current data declaration |
62 | line in case we're given the BIND(C) attribute with a NAME= specifier. */ | |
63 | static int num_idents_on_line; | |
64 | /* Need to know if a NAME= specifier was found during gfc_match_bind_c so we | |
65 | can supply a name if the curr_binding_label is nil and NAME= was not. */ | |
66 | static int has_name_equals = 0; | |
67 | ||
3b6a4b41 | 68 | /* Initializer of the previous enumerator. */ |
69 | ||
70 | static gfc_expr *last_initializer; | |
71 | ||
72 | /* History of all the enumerators is maintained, so that | |
73 | kind values of all the enumerators could be updated depending | |
74 | upon the maximum initialized value. */ | |
75 | ||
76 | typedef struct enumerator_history | |
77 | { | |
78 | gfc_symbol *sym; | |
79 | gfc_expr *initializer; | |
80 | struct enumerator_history *next; | |
81 | } | |
82 | enumerator_history; | |
83 | ||
84 | /* Header of enum history chain. */ | |
85 | ||
86 | static enumerator_history *enum_history = NULL; | |
87 | ||
88 | /* Pointer of enum history node containing largest initializer. */ | |
89 | ||
90 | static enumerator_history *max_enum = NULL; | |
91 | ||
4ee9c684 | 92 | /* gfc_new_block points to the symbol of a newly matched block. */ |
93 | ||
94 | gfc_symbol *gfc_new_block; | |
95 | ||
077932f9 | 96 | bool gfc_matching_function; |
67a51c8e | 97 | |
82841c8f | 98 | /* Set upon parsing a !GCC$ unroll n directive for use in the next loop. */ |
99 | int directive_unroll = -1; | |
100 | ||
f052211c | 101 | /* Map of middle-end built-ins that should be vectorized. */ |
102 | hash_map<nofree_string_hash, int> *gfc_vectorized_builtins; | |
103 | ||
9d958d5b | 104 | /* If a kind expression of a component of a parameterized derived type is |
105 | parameterized, temporarily store the expression here. */ | |
106 | static gfc_expr *saved_kind_expr = NULL; | |
107 | ||
108 | /* Used to store the parameter list arising in a PDT declaration and | |
109 | in the typespec of a PDT variable or component. */ | |
110 | static gfc_actual_arglist *decl_type_param_list; | |
111 | static gfc_actual_arglist *type_param_spec_list; | |
112 | ||
b4f45d02 | 113 | /********************* DATA statement subroutines *********************/ |
114 | ||
1bfea7e8 | 115 | static bool in_match_data = false; |
116 | ||
117 | bool | |
118 | gfc_in_match_data (void) | |
119 | { | |
120 | return in_match_data; | |
121 | } | |
122 | ||
cbbac028 | 123 | static void |
124 | set_in_match_data (bool set_value) | |
1bfea7e8 | 125 | { |
126 | in_match_data = set_value; | |
127 | } | |
128 | ||
b4f45d02 | 129 | /* Free a gfc_data_variable structure and everything beneath it. */ |
130 | ||
131 | static void | |
1a9745d2 | 132 | free_variable (gfc_data_variable *p) |
b4f45d02 | 133 | { |
134 | gfc_data_variable *q; | |
135 | ||
136 | for (; p; p = q) | |
137 | { | |
138 | q = p->next; | |
139 | gfc_free_expr (p->expr); | |
140 | gfc_free_iterator (&p->iter, 0); | |
141 | free_variable (p->list); | |
434f0922 | 142 | free (p); |
b4f45d02 | 143 | } |
144 | } | |
145 | ||
146 | ||
147 | /* Free a gfc_data_value structure and everything beneath it. */ | |
148 | ||
149 | static void | |
1a9745d2 | 150 | free_value (gfc_data_value *p) |
b4f45d02 | 151 | { |
152 | gfc_data_value *q; | |
153 | ||
154 | for (; p; p = q) | |
155 | { | |
156 | q = p->next; | |
2d4466dd | 157 | mpz_clear (p->repeat); |
b4f45d02 | 158 | gfc_free_expr (p->expr); |
434f0922 | 159 | free (p); |
b4f45d02 | 160 | } |
161 | } | |
162 | ||
163 | ||
164 | /* Free a list of gfc_data structures. */ | |
165 | ||
166 | void | |
1a9745d2 | 167 | gfc_free_data (gfc_data *p) |
b4f45d02 | 168 | { |
169 | gfc_data *q; | |
170 | ||
171 | for (; p; p = q) | |
172 | { | |
173 | q = p->next; | |
b4f45d02 | 174 | free_variable (p->var); |
175 | free_value (p->value); | |
434f0922 | 176 | free (p); |
b4f45d02 | 177 | } |
178 | } | |
179 | ||
180 | ||
af29c1f0 | 181 | /* Free all data in a namespace. */ |
1a9745d2 | 182 | |
af29c1f0 | 183 | static void |
f6d0e37a | 184 | gfc_free_data_all (gfc_namespace *ns) |
af29c1f0 | 185 | { |
186 | gfc_data *d; | |
187 | ||
188 | for (;ns->data;) | |
189 | { | |
190 | d = ns->data->next; | |
434f0922 | 191 | free (ns->data); |
af29c1f0 | 192 | ns->data = d; |
193 | } | |
194 | } | |
195 | ||
388ce1b2 | 196 | /* Reject data parsed since the last restore point was marked. */ |
197 | ||
198 | void | |
199 | gfc_reject_data (gfc_namespace *ns) | |
200 | { | |
201 | gfc_data *d; | |
202 | ||
203 | while (ns->data && ns->data != ns->old_data) | |
204 | { | |
205 | d = ns->data->next; | |
206 | free (ns->data); | |
207 | ns->data = d; | |
208 | } | |
209 | } | |
af29c1f0 | 210 | |
b4f45d02 | 211 | static match var_element (gfc_data_variable *); |
212 | ||
213 | /* Match a list of variables terminated by an iterator and a right | |
214 | parenthesis. */ | |
215 | ||
216 | static match | |
1a9745d2 | 217 | var_list (gfc_data_variable *parent) |
b4f45d02 | 218 | { |
219 | gfc_data_variable *tail, var; | |
220 | match m; | |
221 | ||
222 | m = var_element (&var); | |
223 | if (m == MATCH_ERROR) | |
224 | return MATCH_ERROR; | |
225 | if (m == MATCH_NO) | |
226 | goto syntax; | |
227 | ||
228 | tail = gfc_get_data_variable (); | |
229 | *tail = var; | |
230 | ||
231 | parent->list = tail; | |
232 | ||
233 | for (;;) | |
234 | { | |
235 | if (gfc_match_char (',') != MATCH_YES) | |
236 | goto syntax; | |
237 | ||
238 | m = gfc_match_iterator (&parent->iter, 1); | |
239 | if (m == MATCH_YES) | |
240 | break; | |
241 | if (m == MATCH_ERROR) | |
242 | return MATCH_ERROR; | |
243 | ||
244 | m = var_element (&var); | |
245 | if (m == MATCH_ERROR) | |
246 | return MATCH_ERROR; | |
247 | if (m == MATCH_NO) | |
248 | goto syntax; | |
249 | ||
250 | tail->next = gfc_get_data_variable (); | |
251 | tail = tail->next; | |
252 | ||
253 | *tail = var; | |
254 | } | |
255 | ||
256 | if (gfc_match_char (')') != MATCH_YES) | |
257 | goto syntax; | |
258 | return MATCH_YES; | |
259 | ||
260 | syntax: | |
261 | gfc_syntax_error (ST_DATA); | |
262 | return MATCH_ERROR; | |
263 | } | |
264 | ||
265 | ||
266 | /* Match a single element in a data variable list, which can be a | |
267 | variable-iterator list. */ | |
268 | ||
269 | static match | |
c1977dbe | 270 | var_element (gfc_data_variable *new_var) |
b4f45d02 | 271 | { |
272 | match m; | |
273 | gfc_symbol *sym; | |
274 | ||
c1977dbe | 275 | memset (new_var, 0, sizeof (gfc_data_variable)); |
b4f45d02 | 276 | |
277 | if (gfc_match_char ('(') == MATCH_YES) | |
c1977dbe | 278 | return var_list (new_var); |
b4f45d02 | 279 | |
c1977dbe | 280 | m = gfc_match_variable (&new_var->expr, 0); |
b4f45d02 | 281 | if (m != MATCH_YES) |
282 | return m; | |
283 | ||
3e6f2100 | 284 | if (new_var->expr->expr_type == EXPR_CONSTANT |
285 | && new_var->expr->symtree == NULL) | |
286 | { | |
287 | gfc_error ("Inquiry parameter cannot appear in a " | |
288 | "data-stmt-object-list at %C"); | |
289 | return MATCH_ERROR; | |
290 | } | |
291 | ||
c1977dbe | 292 | sym = new_var->expr->symtree->n.sym; |
b4f45d02 | 293 | |
40de255b | 294 | /* Symbol should already have an associated type. */ |
60e19868 | 295 | if (!gfc_check_symbol_typed (sym, gfc_current_ns, false, gfc_current_locus)) |
40de255b | 296 | return MATCH_ERROR; |
297 | ||
1a9745d2 | 298 | if (!sym->attr.function && gfc_current_ns->parent |
299 | && gfc_current_ns->parent == sym->ns) | |
b4f45d02 | 300 | { |
716da296 | 301 | gfc_error ("Host associated variable %qs may not be in the DATA " |
7698a624 | 302 | "statement at %C", sym->name); |
b4f45d02 | 303 | return MATCH_ERROR; |
304 | } | |
305 | ||
c8df3e9c | 306 | if (gfc_current_state () != COMP_BLOCK_DATA |
1a9745d2 | 307 | && sym->attr.in_common |
60e19868 | 308 | && !gfc_notify_std (GFC_STD_GNU, "initialization of " |
0d2b3c9c | 309 | "common block variable %qs in DATA statement at %C", |
60e19868 | 310 | sym->name)) |
c8df3e9c | 311 | return MATCH_ERROR; |
b4f45d02 | 312 | |
60e19868 | 313 | if (!gfc_add_data (&sym->attr, sym->name, &new_var->expr->where)) |
b4f45d02 | 314 | return MATCH_ERROR; |
315 | ||
316 | return MATCH_YES; | |
317 | } | |
318 | ||
319 | ||
320 | /* Match the top-level list of data variables. */ | |
321 | ||
322 | static match | |
1a9745d2 | 323 | top_var_list (gfc_data *d) |
b4f45d02 | 324 | { |
c1977dbe | 325 | gfc_data_variable var, *tail, *new_var; |
b4f45d02 | 326 | match m; |
327 | ||
328 | tail = NULL; | |
329 | ||
330 | for (;;) | |
331 | { | |
332 | m = var_element (&var); | |
333 | if (m == MATCH_NO) | |
334 | goto syntax; | |
335 | if (m == MATCH_ERROR) | |
336 | return MATCH_ERROR; | |
337 | ||
c1977dbe | 338 | new_var = gfc_get_data_variable (); |
339 | *new_var = var; | |
b4f45d02 | 340 | |
341 | if (tail == NULL) | |
c1977dbe | 342 | d->var = new_var; |
b4f45d02 | 343 | else |
c1977dbe | 344 | tail->next = new_var; |
b4f45d02 | 345 | |
c1977dbe | 346 | tail = new_var; |
b4f45d02 | 347 | |
348 | if (gfc_match_char ('/') == MATCH_YES) | |
349 | break; | |
350 | if (gfc_match_char (',') != MATCH_YES) | |
351 | goto syntax; | |
352 | } | |
353 | ||
354 | return MATCH_YES; | |
355 | ||
356 | syntax: | |
357 | gfc_syntax_error (ST_DATA); | |
af29c1f0 | 358 | gfc_free_data_all (gfc_current_ns); |
b4f45d02 | 359 | return MATCH_ERROR; |
360 | } | |
361 | ||
362 | ||
363 | static match | |
1a9745d2 | 364 | match_data_constant (gfc_expr **result) |
b4f45d02 | 365 | { |
366 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c2958b6b | 367 | gfc_symbol *sym, *dt_sym = NULL; |
b4f45d02 | 368 | gfc_expr *expr; |
369 | match m; | |
096d4ad9 | 370 | locus old_loc; |
b4f45d02 | 371 | |
372 | m = gfc_match_literal_constant (&expr, 1); | |
373 | if (m == MATCH_YES) | |
374 | { | |
375 | *result = expr; | |
376 | return MATCH_YES; | |
377 | } | |
378 | ||
379 | if (m == MATCH_ERROR) | |
380 | return MATCH_ERROR; | |
381 | ||
382 | m = gfc_match_null (result); | |
383 | if (m != MATCH_NO) | |
384 | return m; | |
385 | ||
096d4ad9 | 386 | old_loc = gfc_current_locus; |
387 | ||
388 | /* Should this be a structure component, try to match it | |
389 | before matching a name. */ | |
390 | m = gfc_match_rvalue (result); | |
391 | if (m == MATCH_ERROR) | |
392 | return m; | |
393 | ||
394 | if (m == MATCH_YES && (*result)->expr_type == EXPR_STRUCTURE) | |
395 | { | |
60e19868 | 396 | if (!gfc_simplify_expr (*result, 0)) |
096d4ad9 | 397 | m = MATCH_ERROR; |
398 | return m; | |
399 | } | |
021ff494 | 400 | else if (m == MATCH_YES) |
a8289010 | 401 | { |
bf96f320 | 402 | /* If a parameter inquiry ends up here, symtree is NULL but **result |
403 | contains the right constant expression. Check here. */ | |
404 | if ((*result)->symtree == NULL | |
405 | && (*result)->expr_type == EXPR_CONSTANT | |
406 | && ((*result)->ts.type == BT_INTEGER | |
407 | || (*result)->ts.type == BT_REAL)) | |
408 | return m; | |
409 | ||
a8289010 | 410 | /* F2018:R845 data-stmt-constant is initial-data-target. |
411 | A data-stmt-constant shall be ... initial-data-target if and | |
412 | only if the corresponding data-stmt-object has the POINTER | |
413 | attribute. ... If data-stmt-constant is initial-data-target | |
414 | the corresponding data statement object shall be | |
415 | data-pointer-initialization compatible (7.5.4.6) with the initial | |
416 | data target; the data statement object is initially associated | |
417 | with the target. */ | |
418 | if ((*result)->symtree->n.sym->attr.save | |
419 | && (*result)->symtree->n.sym->attr.target) | |
420 | return m; | |
421 | gfc_free_expr (*result); | |
422 | } | |
096d4ad9 | 423 | |
424 | gfc_current_locus = old_loc; | |
425 | ||
b4f45d02 | 426 | m = gfc_match_name (name); |
427 | if (m != MATCH_YES) | |
428 | return m; | |
429 | ||
430 | if (gfc_find_symbol (name, NULL, 1, &sym)) | |
431 | return MATCH_ERROR; | |
432 | ||
c2958b6b | 433 | if (sym && sym->attr.generic) |
434 | dt_sym = gfc_find_dt_in_generic (sym); | |
435 | ||
b4f45d02 | 436 | if (sym == NULL |
c2958b6b | 437 | || (sym->attr.flavor != FL_PARAMETER |
d7cd448a | 438 | && (!dt_sym || !gfc_fl_struct (dt_sym->attr.flavor)))) |
b4f45d02 | 439 | { |
716da296 | 440 | gfc_error ("Symbol %qs must be a PARAMETER in DATA statement at %C", |
b4f45d02 | 441 | name); |
fb5574d7 | 442 | *result = NULL; |
b4f45d02 | 443 | return MATCH_ERROR; |
444 | } | |
d7cd448a | 445 | else if (dt_sym && gfc_fl_struct (dt_sym->attr.flavor)) |
c2958b6b | 446 | return gfc_match_structure_constructor (dt_sym, result); |
b4f45d02 | 447 | |
f0a51891 | 448 | /* Check to see if the value is an initialization array expression. */ |
449 | if (sym->value->expr_type == EXPR_ARRAY) | |
450 | { | |
451 | gfc_current_locus = old_loc; | |
452 | ||
453 | m = gfc_match_init_expr (result); | |
454 | if (m == MATCH_ERROR) | |
455 | return m; | |
456 | ||
457 | if (m == MATCH_YES) | |
458 | { | |
60e19868 | 459 | if (!gfc_simplify_expr (*result, 0)) |
f0a51891 | 460 | m = MATCH_ERROR; |
461 | ||
462 | if ((*result)->expr_type == EXPR_CONSTANT) | |
463 | return m; | |
464 | else | |
465 | { | |
466 | gfc_error ("Invalid initializer %s in Data statement at %C", name); | |
467 | return MATCH_ERROR; | |
468 | } | |
469 | } | |
470 | } | |
471 | ||
b4f45d02 | 472 | *result = gfc_copy_expr (sym->value); |
473 | return MATCH_YES; | |
474 | } | |
475 | ||
476 | ||
477 | /* Match a list of values in a DATA statement. The leading '/' has | |
478 | already been seen at this point. */ | |
479 | ||
480 | static match | |
1a9745d2 | 481 | top_val_list (gfc_data *data) |
b4f45d02 | 482 | { |
c1977dbe | 483 | gfc_data_value *new_val, *tail; |
b4f45d02 | 484 | gfc_expr *expr; |
b4f45d02 | 485 | match m; |
486 | ||
487 | tail = NULL; | |
488 | ||
489 | for (;;) | |
490 | { | |
491 | m = match_data_constant (&expr); | |
492 | if (m == MATCH_NO) | |
493 | goto syntax; | |
494 | if (m == MATCH_ERROR) | |
495 | return MATCH_ERROR; | |
496 | ||
c1977dbe | 497 | new_val = gfc_get_data_value (); |
498 | mpz_init (new_val->repeat); | |
b4f45d02 | 499 | |
500 | if (tail == NULL) | |
c1977dbe | 501 | data->value = new_val; |
b4f45d02 | 502 | else |
c1977dbe | 503 | tail->next = new_val; |
b4f45d02 | 504 | |
c1977dbe | 505 | tail = new_val; |
b4f45d02 | 506 | |
507 | if (expr->ts.type != BT_INTEGER || gfc_match_char ('*') != MATCH_YES) | |
508 | { | |
509 | tail->expr = expr; | |
7d74abfd | 510 | mpz_set_ui (tail->repeat, 1); |
b4f45d02 | 511 | } |
512 | else | |
513 | { | |
021ff494 | 514 | mpz_set (tail->repeat, expr->value.integer); |
b4f45d02 | 515 | gfc_free_expr (expr); |
b4f45d02 | 516 | |
517 | m = match_data_constant (&tail->expr); | |
518 | if (m == MATCH_NO) | |
519 | goto syntax; | |
520 | if (m == MATCH_ERROR) | |
521 | return MATCH_ERROR; | |
522 | } | |
523 | ||
524 | if (gfc_match_char ('/') == MATCH_YES) | |
525 | break; | |
526 | if (gfc_match_char (',') == MATCH_NO) | |
527 | goto syntax; | |
528 | } | |
529 | ||
530 | return MATCH_YES; | |
531 | ||
532 | syntax: | |
533 | gfc_syntax_error (ST_DATA); | |
af29c1f0 | 534 | gfc_free_data_all (gfc_current_ns); |
b4f45d02 | 535 | return MATCH_ERROR; |
536 | } | |
537 | ||
538 | ||
539 | /* Matches an old style initialization. */ | |
540 | ||
541 | static match | |
542 | match_old_style_init (const char *name) | |
543 | { | |
544 | match m; | |
545 | gfc_symtree *st; | |
344b937e | 546 | gfc_symbol *sym; |
b4f45d02 | 547 | gfc_data *newdata; |
548 | ||
549 | /* Set up data structure to hold initializers. */ | |
550 | gfc_find_sym_tree (name, NULL, 0, &st); | |
344b937e | 551 | sym = st->n.sym; |
552 | ||
b4f45d02 | 553 | newdata = gfc_get_data (); |
554 | newdata->var = gfc_get_data_variable (); | |
555 | newdata->var->expr = gfc_get_variable_expr (st); | |
d9c759d9 | 556 | newdata->var->expr->where = sym->declared_at; |
5aed5db3 | 557 | newdata->where = gfc_current_locus; |
b4f45d02 | 558 | |
f6d0e37a | 559 | /* Match initial value list. This also eats the terminal '/'. */ |
b4f45d02 | 560 | m = top_val_list (newdata); |
561 | if (m != MATCH_YES) | |
562 | { | |
434f0922 | 563 | free (newdata); |
b4f45d02 | 564 | return m; |
565 | } | |
566 | ||
567 | if (gfc_pure (NULL)) | |
568 | { | |
569 | gfc_error ("Initialization at %C is not allowed in a PURE procedure"); | |
434f0922 | 570 | free (newdata); |
b4f45d02 | 571 | return MATCH_ERROR; |
572 | } | |
c77badf3 | 573 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
8b0a2e85 | 574 | |
344b937e | 575 | /* Mark the variable as having appeared in a data statement. */ |
60e19868 | 576 | if (!gfc_add_data (&sym->attr, sym->name, &sym->declared_at)) |
344b937e | 577 | { |
434f0922 | 578 | free (newdata); |
344b937e | 579 | return MATCH_ERROR; |
580 | } | |
581 | ||
b4f45d02 | 582 | /* Chain in namespace list of DATA initializers. */ |
583 | newdata->next = gfc_current_ns->data; | |
584 | gfc_current_ns->data = newdata; | |
585 | ||
586 | return m; | |
587 | } | |
588 | ||
1a9745d2 | 589 | |
b4f45d02 | 590 | /* Match the stuff following a DATA statement. If ERROR_FLAG is set, |
39fca56b | 591 | we are matching a DATA statement and are therefore issuing an error |
e14bee04 | 592 | if we encounter something unexpected, if not, we're trying to match |
fe06c0d5 | 593 | an old-style initialization expression of the form INTEGER I /2/. */ |
b4f45d02 | 594 | |
595 | match | |
596 | gfc_match_data (void) | |
597 | { | |
c1977dbe | 598 | gfc_data *new_data; |
b4f45d02 | 599 | match m; |
600 | ||
c286c294 | 601 | /* Before parsing the rest of a DATA statement, check F2008:c1206. */ |
602 | if ((gfc_current_state () == COMP_FUNCTION | |
603 | || gfc_current_state () == COMP_SUBROUTINE) | |
604 | && gfc_state_stack->previous->state == COMP_INTERFACE) | |
605 | { | |
606 | gfc_error ("DATA statement at %C cannot appear within an INTERFACE"); | |
607 | return MATCH_ERROR; | |
608 | } | |
609 | ||
cbbac028 | 610 | set_in_match_data (true); |
1bfea7e8 | 611 | |
b4f45d02 | 612 | for (;;) |
613 | { | |
c1977dbe | 614 | new_data = gfc_get_data (); |
615 | new_data->where = gfc_current_locus; | |
b4f45d02 | 616 | |
c1977dbe | 617 | m = top_var_list (new_data); |
b4f45d02 | 618 | if (m != MATCH_YES) |
619 | goto cleanup; | |
620 | ||
10e78772 | 621 | if (new_data->var->iter.var |
622 | && new_data->var->iter.var->ts.type == BT_INTEGER | |
623 | && new_data->var->iter.var->symtree->n.sym->attr.implied_index == 1 | |
624 | && new_data->var->list | |
625 | && new_data->var->list->expr | |
626 | && new_data->var->list->expr->ts.type == BT_CHARACTER | |
627 | && new_data->var->list->expr->ref | |
628 | && new_data->var->list->expr->ref->type == REF_SUBSTRING) | |
629 | { | |
630 | gfc_error ("Invalid substring in data-implied-do at %L in DATA " | |
631 | "statement", &new_data->var->list->expr->where); | |
632 | goto cleanup; | |
633 | } | |
634 | ||
c1977dbe | 635 | m = top_val_list (new_data); |
b4f45d02 | 636 | if (m != MATCH_YES) |
637 | goto cleanup; | |
638 | ||
c1977dbe | 639 | new_data->next = gfc_current_ns->data; |
640 | gfc_current_ns->data = new_data; | |
b4f45d02 | 641 | |
642 | if (gfc_match_eos () == MATCH_YES) | |
643 | break; | |
644 | ||
645 | gfc_match_char (','); /* Optional comma */ | |
646 | } | |
647 | ||
cbbac028 | 648 | set_in_match_data (false); |
1bfea7e8 | 649 | |
b4f45d02 | 650 | if (gfc_pure (NULL)) |
651 | { | |
652 | gfc_error ("DATA statement at %C is not allowed in a PURE procedure"); | |
653 | return MATCH_ERROR; | |
654 | } | |
c77badf3 | 655 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
8b0a2e85 | 656 | |
b4f45d02 | 657 | return MATCH_YES; |
658 | ||
659 | cleanup: | |
cbbac028 | 660 | set_in_match_data (false); |
c1977dbe | 661 | gfc_free_data (new_data); |
b4f45d02 | 662 | return MATCH_ERROR; |
663 | } | |
664 | ||
665 | ||
666 | /************************ Declaration statements *********************/ | |
667 | ||
e97ac7c0 | 668 | |
d7cd448a | 669 | /* Like gfc_match_init_expr, but matches a 'clist' (old-style initialization |
670 | list). The difference here is the expression is a list of constants | |
7d7125df | 671 | and is surrounded by '/'. |
d7cd448a | 672 | The typespec ts must match the typespec of the variable which the |
673 | clist is initializing. | |
7d7125df | 674 | The arrayspec tells whether this should match a list of constants |
d7cd448a | 675 | corresponding to array elements or a scalar (as == NULL). */ |
676 | ||
677 | static match | |
678 | match_clist_expr (gfc_expr **result, gfc_typespec *ts, gfc_array_spec *as) | |
679 | { | |
680 | gfc_constructor_base array_head = NULL; | |
681 | gfc_expr *expr = NULL; | |
d9c759d9 | 682 | match m = MATCH_ERROR; |
d7cd448a | 683 | locus where; |
f1e4e020 | 684 | mpz_t repeat, cons_size, as_size; |
d7cd448a | 685 | bool scalar; |
686 | int cmp; | |
687 | ||
688 | gcc_assert (ts); | |
689 | ||
d7cd448a | 690 | /* We have already matched '/' - now look for a constant list, as with |
691 | top_val_list from decl.c, but append the result to an array. */ | |
692 | if (gfc_match ("/") == MATCH_YES) | |
693 | { | |
694 | gfc_error ("Empty old style initializer list at %C"); | |
d9c759d9 | 695 | return MATCH_ERROR; |
d7cd448a | 696 | } |
697 | ||
698 | where = gfc_current_locus; | |
d9c759d9 | 699 | scalar = !as || !as->rank; |
700 | ||
701 | if (!scalar && !spec_size (as, &as_size)) | |
702 | { | |
703 | gfc_error ("Array in initializer list at %L must have an explicit shape", | |
704 | as->type == AS_EXPLICIT ? &as->upper[0]->where : &where); | |
705 | /* Nothing to cleanup yet. */ | |
706 | return MATCH_ERROR; | |
707 | } | |
708 | ||
709 | mpz_init_set_ui (repeat, 0); | |
710 | ||
d7cd448a | 711 | for (;;) |
712 | { | |
713 | m = match_data_constant (&expr); | |
714 | if (m != MATCH_YES) | |
715 | expr = NULL; /* match_data_constant may set expr to garbage */ | |
716 | if (m == MATCH_NO) | |
717 | goto syntax; | |
718 | if (m == MATCH_ERROR) | |
719 | goto cleanup; | |
720 | ||
721 | /* Found r in repeat spec r*c; look for the constant to repeat. */ | |
722 | if ( gfc_match_char ('*') == MATCH_YES) | |
723 | { | |
724 | if (scalar) | |
725 | { | |
726 | gfc_error ("Repeat spec invalid in scalar initializer at %C"); | |
727 | goto cleanup; | |
728 | } | |
729 | if (expr->ts.type != BT_INTEGER) | |
730 | { | |
731 | gfc_error ("Repeat spec must be an integer at %C"); | |
732 | goto cleanup; | |
733 | } | |
734 | mpz_set (repeat, expr->value.integer); | |
735 | gfc_free_expr (expr); | |
736 | expr = NULL; | |
737 | ||
738 | m = match_data_constant (&expr); | |
739 | if (m == MATCH_NO) | |
d9c759d9 | 740 | { |
741 | m = MATCH_ERROR; | |
742 | gfc_error ("Expected data constant after repeat spec at %C"); | |
743 | } | |
d7cd448a | 744 | if (m != MATCH_YES) |
745 | goto cleanup; | |
746 | } | |
747 | /* No repeat spec, we matched the data constant itself. */ | |
748 | else | |
749 | mpz_set_ui (repeat, 1); | |
750 | ||
751 | if (!scalar) | |
752 | { | |
753 | /* Add the constant initializer as many times as repeated. */ | |
754 | for (; mpz_cmp_ui (repeat, 0) > 0; mpz_sub_ui (repeat, repeat, 1)) | |
755 | { | |
756 | /* Make sure types of elements match */ | |
757 | if(ts && !gfc_compare_types (&expr->ts, ts) | |
758 | && !gfc_convert_type (expr, ts, 1)) | |
759 | goto cleanup; | |
760 | ||
761 | gfc_constructor_append_expr (&array_head, | |
762 | gfc_copy_expr (expr), &gfc_current_locus); | |
763 | } | |
764 | ||
765 | gfc_free_expr (expr); | |
766 | expr = NULL; | |
767 | } | |
768 | ||
769 | /* For scalar initializers quit after one element. */ | |
770 | else | |
771 | { | |
772 | if(gfc_match_char ('/') != MATCH_YES) | |
773 | { | |
774 | gfc_error ("End of scalar initializer expected at %C"); | |
775 | goto cleanup; | |
776 | } | |
777 | break; | |
778 | } | |
779 | ||
780 | if (gfc_match_char ('/') == MATCH_YES) | |
781 | break; | |
782 | if (gfc_match_char (',') == MATCH_NO) | |
783 | goto syntax; | |
784 | } | |
785 | ||
d9c759d9 | 786 | /* If we break early from here out, we encountered an error. */ |
787 | m = MATCH_ERROR; | |
788 | ||
d7cd448a | 789 | /* Set up expr as an array constructor. */ |
790 | if (!scalar) | |
791 | { | |
792 | expr = gfc_get_array_expr (ts->type, ts->kind, &where); | |
793 | expr->ts = *ts; | |
794 | expr->value.constructor = array_head; | |
795 | ||
796 | expr->rank = as->rank; | |
797 | expr->shape = gfc_get_shape (expr->rank); | |
798 | ||
f1e4e020 | 799 | /* Validate sizes. We built expr ourselves, so cons_size will be |
800 | constant (we fail above for non-constant expressions). | |
d9c759d9 | 801 | We still need to verify that the sizes match. */ |
f1e4e020 | 802 | gcc_assert (gfc_array_size (expr, &cons_size)); |
d9c759d9 | 803 | cmp = mpz_cmp (cons_size, as_size); |
804 | if (cmp < 0) | |
805 | gfc_error ("Not enough elements in array initializer at %C"); | |
806 | else if (cmp > 0) | |
807 | gfc_error ("Too many elements in array initializer at %C"); | |
f1e4e020 | 808 | mpz_clear (cons_size); |
d7cd448a | 809 | if (cmp) |
f1e4e020 | 810 | goto cleanup; |
d7cd448a | 811 | } |
812 | ||
813 | /* Make sure scalar types match. */ | |
814 | else if (!gfc_compare_types (&expr->ts, ts) | |
815 | && !gfc_convert_type (expr, ts, 1)) | |
816 | goto cleanup; | |
817 | ||
818 | if (expr->ts.u.cl) | |
819 | expr->ts.u.cl->length_from_typespec = 1; | |
820 | ||
821 | *result = expr; | |
d9c759d9 | 822 | m = MATCH_YES; |
823 | goto done; | |
d7cd448a | 824 | |
825 | syntax: | |
d9c759d9 | 826 | m = MATCH_ERROR; |
d7cd448a | 827 | gfc_error ("Syntax error in old style initializer list at %C"); |
828 | ||
829 | cleanup: | |
830 | if (expr) | |
831 | expr->value.constructor = NULL; | |
832 | gfc_free_expr (expr); | |
833 | gfc_constructor_free (array_head); | |
d9c759d9 | 834 | |
835 | done: | |
d7cd448a | 836 | mpz_clear (repeat); |
d9c759d9 | 837 | if (!scalar) |
838 | mpz_clear (as_size); | |
839 | return m; | |
d7cd448a | 840 | } |
841 | ||
842 | ||
df084314 | 843 | /* Auxiliary function to merge DIMENSION and CODIMENSION array specs. */ |
e97ac7c0 | 844 | |
60e19868 | 845 | static bool |
e97ac7c0 | 846 | merge_array_spec (gfc_array_spec *from, gfc_array_spec *to, bool copy) |
847 | { | |
a83e9b8b | 848 | int i, j; |
e97ac7c0 | 849 | |
9b58b4c7 | 850 | if ((from->type == AS_ASSUMED_RANK && to->corank) |
851 | || (to->type == AS_ASSUMED_RANK && from->corank)) | |
852 | { | |
853 | gfc_error ("The assumed-rank array at %C shall not have a codimension"); | |
60e19868 | 854 | return false; |
9b58b4c7 | 855 | } |
f00f6dd6 | 856 | |
e97ac7c0 | 857 | if (to->rank == 0 && from->rank > 0) |
858 | { | |
859 | to->rank = from->rank; | |
860 | to->type = from->type; | |
861 | to->cray_pointee = from->cray_pointee; | |
862 | to->cp_was_assumed = from->cp_was_assumed; | |
863 | ||
864 | for (i = 0; i < to->corank; i++) | |
865 | { | |
a83e9b8b | 866 | /* Do not exceed the limits on lower[] and upper[]. gfortran |
867 | cleans up elsewhere. */ | |
868 | j = from->rank + i; | |
869 | if (j >= GFC_MAX_DIMENSIONS) | |
870 | break; | |
871 | ||
872 | to->lower[j] = to->lower[i]; | |
873 | to->upper[j] = to->upper[i]; | |
e97ac7c0 | 874 | } |
875 | for (i = 0; i < from->rank; i++) | |
876 | { | |
877 | if (copy) | |
878 | { | |
879 | to->lower[i] = gfc_copy_expr (from->lower[i]); | |
880 | to->upper[i] = gfc_copy_expr (from->upper[i]); | |
881 | } | |
882 | else | |
883 | { | |
884 | to->lower[i] = from->lower[i]; | |
885 | to->upper[i] = from->upper[i]; | |
886 | } | |
887 | } | |
888 | } | |
889 | else if (to->corank == 0 && from->corank > 0) | |
890 | { | |
891 | to->corank = from->corank; | |
892 | to->cotype = from->cotype; | |
893 | ||
894 | for (i = 0; i < from->corank; i++) | |
895 | { | |
a83e9b8b | 896 | /* Do not exceed the limits on lower[] and upper[]. gfortran |
897 | cleans up elsewhere. */ | |
898 | j = to->rank + i; | |
899 | if (j >= GFC_MAX_DIMENSIONS) | |
900 | break; | |
901 | ||
e97ac7c0 | 902 | if (copy) |
903 | { | |
a83e9b8b | 904 | to->lower[j] = gfc_copy_expr (from->lower[i]); |
905 | to->upper[j] = gfc_copy_expr (from->upper[i]); | |
e97ac7c0 | 906 | } |
907 | else | |
908 | { | |
a83e9b8b | 909 | to->lower[j] = from->lower[i]; |
910 | to->upper[j] = from->upper[i]; | |
e97ac7c0 | 911 | } |
912 | } | |
913 | } | |
9b58b4c7 | 914 | |
ca5fc2b6 | 915 | if (to->rank + to->corank > GFC_MAX_DIMENSIONS) |
a83e9b8b | 916 | { |
917 | gfc_error ("Sum of array rank %d and corank %d at %C exceeds maximum " | |
918 | "allowed dimensions of %d", | |
919 | to->rank, to->corank, GFC_MAX_DIMENSIONS); | |
920 | to->corank = GFC_MAX_DIMENSIONS - to->rank; | |
921 | return false; | |
922 | } | |
60e19868 | 923 | return true; |
e97ac7c0 | 924 | } |
925 | ||
926 | ||
4ee9c684 | 927 | /* Match an intent specification. Since this can only happen after an |
928 | INTENT word, a legal intent-spec must follow. */ | |
929 | ||
930 | static sym_intent | |
931 | match_intent_spec (void) | |
932 | { | |
933 | ||
934 | if (gfc_match (" ( in out )") == MATCH_YES) | |
935 | return INTENT_INOUT; | |
936 | if (gfc_match (" ( in )") == MATCH_YES) | |
937 | return INTENT_IN; | |
938 | if (gfc_match (" ( out )") == MATCH_YES) | |
939 | return INTENT_OUT; | |
940 | ||
941 | gfc_error ("Bad INTENT specification at %C"); | |
942 | return INTENT_UNKNOWN; | |
943 | } | |
944 | ||
945 | ||
946 | /* Matches a character length specification, which is either a | |
3e715c81 | 947 | specification expression, '*', or ':'. */ |
4ee9c684 | 948 | |
949 | static match | |
3e715c81 | 950 | char_len_param_value (gfc_expr **expr, bool *deferred) |
4ee9c684 | 951 | { |
294d58d3 | 952 | match m; |
953 | ||
3e715c81 | 954 | *expr = NULL; |
955 | *deferred = false; | |
956 | ||
4ee9c684 | 957 | if (gfc_match_char ('*') == MATCH_YES) |
3e715c81 | 958 | return MATCH_YES; |
959 | ||
960 | if (gfc_match_char (':') == MATCH_YES) | |
4ee9c684 | 961 | { |
34bf7ba5 | 962 | if (!gfc_notify_std (GFC_STD_F2003, "deferred type parameter at %C")) |
3e715c81 | 963 | return MATCH_ERROR; |
964 | ||
965 | *deferred = true; | |
966 | ||
4ee9c684 | 967 | return MATCH_YES; |
968 | } | |
969 | ||
294d58d3 | 970 | m = gfc_match_expr (expr); |
40de255b | 971 | |
34bf7ba5 | 972 | if (m == MATCH_NO || m == MATCH_ERROR) |
973 | return m; | |
974 | ||
975 | if (!gfc_expr_check_typed (*expr, gfc_current_ns, false)) | |
40de255b | 976 | return MATCH_ERROR; |
977 | ||
34bf7ba5 | 978 | if ((*expr)->expr_type == EXPR_FUNCTION) |
294d58d3 | 979 | { |
9c5a8acc | 980 | if ((*expr)->ts.type == BT_INTEGER |
981 | || ((*expr)->ts.type == BT_UNKNOWN | |
982 | && strcmp((*expr)->symtree->name, "null") != 0)) | |
983 | return MATCH_YES; | |
984 | ||
985 | goto syntax; | |
986 | } | |
987 | else if ((*expr)->expr_type == EXPR_CONSTANT) | |
988 | { | |
989 | /* F2008, 4.4.3.1: The length is a type parameter; its kind is | |
990 | processor dependent and its value is greater than or equal to zero. | |
991 | F2008, 4.4.3.2: If the character length parameter value evaluates | |
992 | to a negative value, the length of character entities declared | |
993 | is zero. */ | |
994 | ||
995 | if ((*expr)->ts.type == BT_INTEGER) | |
294d58d3 | 996 | { |
9c5a8acc | 997 | if (mpz_cmp_si ((*expr)->value.integer, 0) < 0) |
998 | mpz_set_si ((*expr)->value.integer, 0); | |
294d58d3 | 999 | } |
9c5a8acc | 1000 | else |
1001 | goto syntax; | |
294d58d3 | 1002 | } |
9c5a8acc | 1003 | else if ((*expr)->expr_type == EXPR_ARRAY) |
1004 | goto syntax; | |
1005 | else if ((*expr)->expr_type == EXPR_VARIABLE) | |
1006 | { | |
165b422e | 1007 | bool t; |
9c5a8acc | 1008 | gfc_expr *e; |
1009 | ||
1010 | e = gfc_copy_expr (*expr); | |
1011 | ||
1012 | /* This catches the invalid code "[character(m(2:3)) :: 'x', 'y']", | |
1013 | which causes an ICE if gfc_reduce_init_expr() is called. */ | |
47977082 | 1014 | if (e->ref && e->ref->type == REF_ARRAY |
1015 | && e->ref->u.ar.type == AR_UNKNOWN | |
9c5a8acc | 1016 | && e->ref->u.ar.dimen_type[0] == DIMEN_RANGE) |
1017 | goto syntax; | |
1018 | ||
165b422e | 1019 | t = gfc_reduce_init_expr (e); |
1020 | ||
42f172d0 | 1021 | if (!t && e->ts.type == BT_UNKNOWN |
1022 | && e->symtree->n.sym->attr.untyped == 1 | |
a246a22d | 1023 | && (flag_implicit_none |
1024 | || e->symtree->n.sym->ns->seen_implicit_none == 1 | |
42f172d0 | 1025 | || e->symtree->n.sym->ns->parent->seen_implicit_none == 1)) |
165b422e | 1026 | { |
1027 | gfc_free_expr (e); | |
1028 | goto syntax; | |
1029 | } | |
34bf7ba5 | 1030 | |
47977082 | 1031 | if ((e->ref && e->ref->type == REF_ARRAY |
76e207a9 | 1032 | && e->ref->u.ar.type != AR_ELEMENT) |
9c5a8acc | 1033 | || (!e->ref && e->expr_type == EXPR_ARRAY)) |
1034 | { | |
1035 | gfc_free_expr (e); | |
1036 | goto syntax; | |
1037 | } | |
1038 | ||
1039 | gfc_free_expr (e); | |
1040 | } | |
34bf7ba5 | 1041 | |
294d58d3 | 1042 | return m; |
1043 | ||
1044 | syntax: | |
9c5a8acc | 1045 | gfc_error ("Scalar INTEGER expression expected at %L", &(*expr)->where); |
294d58d3 | 1046 | return MATCH_ERROR; |
4ee9c684 | 1047 | } |
1048 | ||
1049 | ||
1050 | /* A character length is a '*' followed by a literal integer or a | |
1051 | char_len_param_value in parenthesis. */ | |
1052 | ||
1053 | static match | |
ae0426ce | 1054 | match_char_length (gfc_expr **expr, bool *deferred, bool obsolescent_check) |
4ee9c684 | 1055 | { |
3bd3b616 | 1056 | int length; |
4ee9c684 | 1057 | match m; |
1058 | ||
8db94b3b | 1059 | *deferred = false; |
4ee9c684 | 1060 | m = gfc_match_char ('*'); |
1061 | if (m != MATCH_YES) | |
1062 | return m; | |
1063 | ||
3bd3b616 | 1064 | m = gfc_match_small_literal_int (&length, NULL); |
4ee9c684 | 1065 | if (m == MATCH_ERROR) |
1066 | return m; | |
1067 | ||
1068 | if (m == MATCH_YES) | |
1069 | { | |
ae0426ce | 1070 | if (obsolescent_check |
60e19868 | 1071 | && !gfc_notify_std (GFC_STD_F95_OBS, "Old-style character length at %C")) |
8e9b41f0 | 1072 | return MATCH_ERROR; |
9f4d9f83 | 1073 | *expr = gfc_get_int_expr (gfc_charlen_int_kind, NULL, length); |
4ee9c684 | 1074 | return m; |
1075 | } | |
1076 | ||
1077 | if (gfc_match_char ('(') == MATCH_NO) | |
1078 | goto syntax; | |
1079 | ||
3e715c81 | 1080 | m = char_len_param_value (expr, deferred); |
077932f9 | 1081 | if (m != MATCH_YES && gfc_matching_function) |
1082 | { | |
1083 | gfc_undo_symbols (); | |
1084 | m = MATCH_YES; | |
1085 | } | |
1086 | ||
4ee9c684 | 1087 | if (m == MATCH_ERROR) |
1088 | return m; | |
1089 | if (m == MATCH_NO) | |
1090 | goto syntax; | |
1091 | ||
1092 | if (gfc_match_char (')') == MATCH_NO) | |
1093 | { | |
1094 | gfc_free_expr (*expr); | |
1095 | *expr = NULL; | |
1096 | goto syntax; | |
1097 | } | |
1098 | ||
1099 | return MATCH_YES; | |
1100 | ||
1101 | syntax: | |
1102 | gfc_error ("Syntax error in character length specification at %C"); | |
1103 | return MATCH_ERROR; | |
1104 | } | |
1105 | ||
1106 | ||
ee893be6 | 1107 | /* Special subroutine for finding a symbol. Check if the name is found |
1108 | in the current name space. If not, and we're compiling a function or | |
1109 | subroutine and the parent compilation unit is an interface, then check | |
1110 | to see if the name we've been given is the name of the interface | |
1111 | (located in another namespace). */ | |
4ee9c684 | 1112 | |
1113 | static int | |
36b0a1b0 | 1114 | find_special (const char *name, gfc_symbol **result, bool allow_subroutine) |
4ee9c684 | 1115 | { |
1116 | gfc_state_data *s; | |
36b0a1b0 | 1117 | gfc_symtree *st; |
ee893be6 | 1118 | int i; |
4ee9c684 | 1119 | |
36b0a1b0 | 1120 | i = gfc_get_sym_tree (name, NULL, &st, allow_subroutine); |
e14bee04 | 1121 | if (i == 0) |
36b0a1b0 | 1122 | { |
1123 | *result = st ? st->n.sym : NULL; | |
1124 | goto end; | |
1125 | } | |
e14bee04 | 1126 | |
4ee9c684 | 1127 | if (gfc_current_state () != COMP_SUBROUTINE |
1128 | && gfc_current_state () != COMP_FUNCTION) | |
ee893be6 | 1129 | goto end; |
4ee9c684 | 1130 | |
1131 | s = gfc_state_stack->previous; | |
1132 | if (s == NULL) | |
ee893be6 | 1133 | goto end; |
4ee9c684 | 1134 | |
1135 | if (s->state != COMP_INTERFACE) | |
ee893be6 | 1136 | goto end; |
4ee9c684 | 1137 | if (s->sym == NULL) |
f6d0e37a | 1138 | goto end; /* Nameless interface. */ |
4ee9c684 | 1139 | |
1140 | if (strcmp (name, s->sym->name) == 0) | |
1141 | { | |
1142 | *result = s->sym; | |
1143 | return 0; | |
1144 | } | |
1145 | ||
ee893be6 | 1146 | end: |
1147 | return i; | |
4ee9c684 | 1148 | } |
1149 | ||
1150 | ||
1151 | /* Special subroutine for getting a symbol node associated with a | |
1152 | procedure name, used in SUBROUTINE and FUNCTION statements. The | |
1153 | symbol is created in the parent using with symtree node in the | |
1154 | child unit pointing to the symbol. If the current namespace has no | |
1155 | parent, then the symbol is just created in the current unit. */ | |
1156 | ||
1157 | static int | |
1a9745d2 | 1158 | get_proc_name (const char *name, gfc_symbol **result, bool module_fcn_entry) |
4ee9c684 | 1159 | { |
1160 | gfc_symtree *st; | |
1161 | gfc_symbol *sym; | |
2ddb8ed9 | 1162 | int rc = 0; |
4ee9c684 | 1163 | |
d77f260f | 1164 | /* Module functions have to be left in their own namespace because |
1165 | they have potentially (almost certainly!) already been referenced. | |
1166 | In this sense, they are rather like external functions. This is | |
1167 | fixed up in resolve.c(resolve_entries), where the symbol name- | |
1168 | space is set to point to the master function, so that the fake | |
1169 | result mechanism can work. */ | |
1170 | if (module_fcn_entry) | |
861d824f | 1171 | { |
1172 | /* Present if entry is declared to be a module procedure. */ | |
1173 | rc = gfc_find_symbol (name, gfc_current_ns->parent, 0, result); | |
c6a05992 | 1174 | |
861d824f | 1175 | if (*result == NULL) |
1176 | rc = gfc_get_symbol (name, NULL, result); | |
a78f714d | 1177 | else if (!gfc_get_symbol (name, NULL, &sym) && sym |
c6a05992 | 1178 | && (*result)->ts.type == BT_UNKNOWN |
1179 | && sym->attr.flavor == FL_UNKNOWN) | |
1180 | /* Pick up the typespec for the entry, if declared in the function | |
1181 | body. Note that this symbol is FL_UNKNOWN because it will | |
1182 | only have appeared in a type declaration. The local symtree | |
1183 | is set to point to the module symbol and a unique symtree | |
1184 | to the local version. This latter ensures a correct clearing | |
1185 | of the symbols. */ | |
a78f714d | 1186 | { |
1187 | /* If the ENTRY proceeds its specification, we need to ensure | |
1188 | that this does not raise a "has no IMPLICIT type" error. */ | |
1189 | if (sym->ts.type == BT_UNKNOWN) | |
2168078b | 1190 | sym->attr.untyped = 1; |
a78f714d | 1191 | |
2168078b | 1192 | (*result)->ts = sym->ts; |
a78f714d | 1193 | |
1194 | /* Put the symbol in the procedure namespace so that, should | |
69b1505f | 1195 | the ENTRY precede its specification, the specification |
a78f714d | 1196 | can be applied. */ |
1197 | (*result)->ns = gfc_current_ns; | |
1198 | ||
1199 | gfc_find_sym_tree (name, gfc_current_ns, 0, &st); | |
1200 | st->n.sym = *result; | |
1201 | st = gfc_get_unique_symtree (gfc_current_ns); | |
c77c84dd | 1202 | sym->refs++; |
a78f714d | 1203 | st->n.sym = sym; |
1204 | } | |
861d824f | 1205 | } |
858f9894 | 1206 | else |
1207 | rc = gfc_get_symbol (name, gfc_current_ns->parent, result); | |
4ee9c684 | 1208 | |
2ddb8ed9 | 1209 | if (rc) |
1210 | return rc; | |
1211 | ||
858f9894 | 1212 | sym = *result; |
97323566 | 1213 | if (sym->attr.proc == PROC_ST_FUNCTION) |
1214 | return rc; | |
4ee9c684 | 1215 | |
b229bdf2 | 1216 | if (sym->attr.module_procedure && sym->attr.if_source == IFSRC_IFBODY) |
4b8eb6ca | 1217 | { |
1218 | /* Create a partially populated interface symbol to carry the | |
1219 | characteristics of the procedure and the result. */ | |
dee7f6d1 | 1220 | sym->tlink = gfc_new_symbol (name, sym->ns); |
b229bdf2 | 1221 | gfc_add_type (sym->tlink, &(sym->ts), &gfc_current_locus); |
dee7f6d1 | 1222 | gfc_copy_attr (&sym->tlink->attr, &sym->attr, NULL); |
4b8eb6ca | 1223 | if (sym->attr.dimension) |
dee7f6d1 | 1224 | sym->tlink->as = gfc_copy_array_spec (sym->as); |
4b8eb6ca | 1225 | |
1226 | /* Ideally, at this point, a copy would be made of the formal | |
1227 | arguments and their namespace. However, this does not appear | |
1228 | to be necessary, albeit at the expense of not being able to | |
1229 | use gfc_compare_interfaces directly. */ | |
1230 | ||
1231 | if (sym->result && sym->result != sym) | |
1232 | { | |
dee7f6d1 | 1233 | sym->tlink->result = sym->result; |
4b8eb6ca | 1234 | sym->result = NULL; |
1235 | } | |
1236 | else if (sym->result) | |
1237 | { | |
dee7f6d1 | 1238 | sym->tlink->result = sym->tlink; |
4b8eb6ca | 1239 | } |
1240 | } | |
1241 | else if (sym && !sym->gfc_new | |
1242 | && gfc_current_state () != COMP_INTERFACE) | |
858f9894 | 1243 | { |
16f49153 | 1244 | /* Trap another encompassed procedure with the same name. All |
1245 | these conditions are necessary to avoid picking up an entry | |
1246 | whose name clashes with that of the encompassing procedure; | |
c77c84dd | 1247 | this is handled using gsymbols to register unique, globally |
16f49153 | 1248 | accessible names. */ |
858f9894 | 1249 | if (sym->attr.flavor != 0 |
1a9745d2 | 1250 | && sym->attr.proc != 0 |
05b3eb93 | 1251 | && (sym->attr.subroutine || sym->attr.function || sym->attr.entry) |
1a9745d2 | 1252 | && sym->attr.if_source != IFSRC_UNKNOWN) |
33994aeb | 1253 | { |
1254 | gfc_error_now ("Procedure %qs at %C is already defined at %L", | |
1255 | name, &sym->declared_at); | |
1256 | return true; | |
1257 | } | |
05b3eb93 | 1258 | if (sym->attr.flavor != 0 |
1259 | && sym->attr.entry && sym->attr.if_source != IFSRC_UNKNOWN) | |
33994aeb | 1260 | { |
1261 | gfc_error_now ("Procedure %qs at %C is already defined at %L", | |
1262 | name, &sym->declared_at); | |
1263 | return true; | |
1264 | } | |
05b3eb93 | 1265 | |
3eb3b784 | 1266 | if (sym->attr.external && sym->attr.procedure |
1267 | && gfc_current_state () == COMP_CONTAINS) | |
33994aeb | 1268 | { |
1269 | gfc_error_now ("Contained procedure %qs at %C clashes with " | |
1270 | "procedure defined at %L", | |
1271 | name, &sym->declared_at); | |
1272 | return true; | |
1273 | } | |
3eb3b784 | 1274 | |
5720fd2f | 1275 | /* Trap a procedure with a name the same as interface in the |
1276 | encompassing scope. */ | |
1277 | if (sym->attr.generic != 0 | |
db697236 | 1278 | && (sym->attr.subroutine || sym->attr.function) |
1279 | && !sym->attr.mod_proc) | |
33994aeb | 1280 | { |
1281 | gfc_error_now ("Name %qs at %C is already defined" | |
1282 | " as a generic interface at %L", | |
1283 | name, &sym->declared_at); | |
1284 | return true; | |
1285 | } | |
5720fd2f | 1286 | |
858f9894 | 1287 | /* Trap declarations of attributes in encompassing scope. The |
1288 | signature for this is that ts.kind is set. Legitimate | |
1289 | references only set ts.type. */ | |
1290 | if (sym->ts.kind != 0 | |
1a9745d2 | 1291 | && !sym->attr.implicit_type |
1292 | && sym->attr.proc == 0 | |
1293 | && gfc_current_ns->parent != NULL | |
1294 | && sym->attr.access == 0 | |
1295 | && !module_fcn_entry) | |
33994aeb | 1296 | { |
1297 | gfc_error_now ("Procedure %qs at %C has an explicit interface " | |
b229bdf2 | 1298 | "from a previous declaration", name); |
33994aeb | 1299 | return true; |
1300 | } | |
b229bdf2 | 1301 | } |
1302 | ||
dc38f1d9 | 1303 | /* C1246 (R1225) MODULE shall appear only in the function-stmt or |
1304 | subroutine-stmt of a module subprogram or of a nonabstract interface | |
1305 | body that is declared in the scoping unit of a module or submodule. */ | |
1306 | if (sym->attr.external | |
1307 | && (sym->attr.subroutine || sym->attr.function) | |
1308 | && sym->attr.if_source == IFSRC_IFBODY | |
1309 | && !current_attr.module_procedure | |
1310 | && sym->attr.proc == PROC_MODULE | |
1311 | && gfc_state_stack->state == COMP_CONTAINS) | |
33994aeb | 1312 | { |
1313 | gfc_error_now ("Procedure %qs defined in interface body at %L " | |
1314 | "clashes with internal procedure defined at %C", | |
1315 | name, &sym->declared_at); | |
1316 | return true; | |
1317 | } | |
dc38f1d9 | 1318 | |
1319 | if (sym && !sym->gfc_new | |
1320 | && sym->attr.flavor != FL_UNKNOWN | |
1321 | && sym->attr.referenced == 0 && sym->attr.subroutine == 1 | |
1322 | && gfc_state_stack->state == COMP_CONTAINS | |
1323 | && gfc_state_stack->previous->state == COMP_SUBROUTINE) | |
33994aeb | 1324 | { |
1325 | gfc_error_now ("Procedure %qs at %C is already defined at %L", | |
1326 | name, &sym->declared_at); | |
1327 | return true; | |
1328 | } | |
858f9894 | 1329 | |
1330 | if (gfc_current_ns->parent == NULL || *result == NULL) | |
1331 | return rc; | |
4ee9c684 | 1332 | |
d77f260f | 1333 | /* Module function entries will already have a symtree in |
1334 | the current namespace but will need one at module level. */ | |
1335 | if (module_fcn_entry) | |
861d824f | 1336 | { |
1337 | /* Present if entry is declared to be a module procedure. */ | |
1338 | rc = gfc_find_sym_tree (name, gfc_current_ns->parent, 0, &st); | |
1339 | if (st == NULL) | |
1340 | st = gfc_new_symtree (&gfc_current_ns->parent->sym_root, name); | |
1341 | } | |
d77f260f | 1342 | else |
1343 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); | |
4ee9c684 | 1344 | |
4ee9c684 | 1345 | st->n.sym = sym; |
1346 | sym->refs++; | |
1347 | ||
f6d0e37a | 1348 | /* See if the procedure should be a module procedure. */ |
4ee9c684 | 1349 | |
d77f260f | 1350 | if (((sym->ns->proc_name != NULL |
b229bdf2 | 1351 | && sym->ns->proc_name->attr.flavor == FL_MODULE |
1352 | && sym->attr.proc != PROC_MODULE) | |
1353 | || (module_fcn_entry && sym->attr.proc != PROC_MODULE)) | |
1354 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) | |
4ee9c684 | 1355 | rc = 2; |
1356 | ||
1357 | return rc; | |
1358 | } | |
1359 | ||
1360 | ||
c5d33754 | 1361 | /* Verify that the given symbol representing a parameter is C |
1362 | interoperable, by checking to see if it was marked as such after | |
1363 | its declaration. If the given symbol is not interoperable, a | |
1364 | warning is reported, thus removing the need to return the status to | |
1365 | the calling function. The standard does not require the user use | |
1366 | one of the iso_c_binding named constants to declare an | |
1367 | interoperable parameter, but we can't be sure if the param is C | |
1368 | interop or not if the user doesn't. For example, integer(4) may be | |
1369 | legal Fortran, but doesn't have meaning in C. It may interop with | |
1370 | a number of the C types, which causes a problem because the | |
1371 | compiler can't know which one. This code is almost certainly not | |
1372 | portable, and the user will get what they deserve if the C type | |
1373 | across platforms isn't always interoperable with integer(4). If | |
1374 | the user had used something like integer(c_int) or integer(c_long), | |
1375 | the compiler could have automatically handled the varying sizes | |
1376 | across platforms. */ | |
1377 | ||
60e19868 | 1378 | bool |
2564c57a | 1379 | gfc_verify_c_interop_param (gfc_symbol *sym) |
c5d33754 | 1380 | { |
1381 | int is_c_interop = 0; | |
60e19868 | 1382 | bool retval = true; |
c5d33754 | 1383 | |
1384 | /* We check implicitly typed variables in symbol.c:gfc_set_default_type(). | |
1385 | Don't repeat the checks here. */ | |
1386 | if (sym->attr.implicit_type) | |
60e19868 | 1387 | return true; |
8db94b3b | 1388 | |
c5d33754 | 1389 | /* For subroutines or functions that are passed to a BIND(C) procedure, |
1390 | they're interoperable if they're BIND(C) and their params are all | |
1391 | interoperable. */ | |
1392 | if (sym->attr.flavor == FL_PROCEDURE) | |
1393 | { | |
1394 | if (sym->attr.is_bind_c == 0) | |
1395 | { | |
bf79c656 | 1396 | gfc_error_now ("Procedure %qs at %L must have the BIND(C) " |
1397 | "attribute to be C interoperable", sym->name, | |
1398 | &(sym->declared_at)); | |
60e19868 | 1399 | return false; |
c5d33754 | 1400 | } |
1401 | else | |
1402 | { | |
1403 | if (sym->attr.is_c_interop == 1) | |
1404 | /* We've already checked this procedure; don't check it again. */ | |
60e19868 | 1405 | return true; |
c5d33754 | 1406 | else |
1407 | return verify_bind_c_sym (sym, &(sym->ts), sym->attr.in_common, | |
1408 | sym->common_block); | |
1409 | } | |
1410 | } | |
8db94b3b | 1411 | |
c5d33754 | 1412 | /* See if we've stored a reference to a procedure that owns sym. */ |
1413 | if (sym->ns != NULL && sym->ns->proc_name != NULL) | |
1414 | { | |
1415 | if (sym->ns->proc_name->attr.is_bind_c == 1) | |
1416 | { | |
60e19868 | 1417 | is_c_interop = (gfc_verify_c_interop(&(sym->ts)) ? 1 : 0); |
c5d33754 | 1418 | |
1419 | if (is_c_interop != 1) | |
1420 | { | |
1421 | /* Make personalized messages to give better feedback. */ | |
1422 | if (sym->ts.type == BT_DERIVED) | |
716da296 | 1423 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1424 | "BIND(C) procedure %qs but is not C interoperable " | |
1425 | "because derived type %qs is not C interoperable", | |
c5d33754 | 1426 | sym->name, &(sym->declared_at), |
8db94b3b | 1427 | sym->ns->proc_name->name, |
eeebe20b | 1428 | sym->ts.u.derived->name); |
2564c57a | 1429 | else if (sym->ts.type == BT_CLASS) |
716da296 | 1430 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1431 | "BIND(C) procedure %qs but is not C interoperable " | |
2564c57a | 1432 | "because it is polymorphic", |
1433 | sym->name, &(sym->declared_at), | |
1434 | sym->ns->proc_name->name); | |
bf79c656 | 1435 | else if (warn_c_binding_type) |
4166acc7 | 1436 | gfc_warning (OPT_Wc_binding_type, |
1437 | "Variable %qs at %L is a dummy argument of the " | |
1438 | "BIND(C) procedure %qs but may not be C " | |
c5d33754 | 1439 | "interoperable", |
1440 | sym->name, &(sym->declared_at), | |
1441 | sym->ns->proc_name->name); | |
1442 | } | |
e4eda3ec | 1443 | |
1444 | /* Character strings are only C interoperable if they have a | |
1445 | length of 1. */ | |
1446 | if (sym->ts.type == BT_CHARACTER) | |
1447 | { | |
eeebe20b | 1448 | gfc_charlen *cl = sym->ts.u.cl; |
e4eda3ec | 1449 | if (!cl || !cl->length || cl->length->expr_type != EXPR_CONSTANT |
1450 | || mpz_cmp_si (cl->length->value.integer, 1) != 0) | |
1451 | { | |
716da296 | 1452 | gfc_error ("Character argument %qs at %L " |
e4eda3ec | 1453 | "must be length 1 because " |
716da296 | 1454 | "procedure %qs is BIND(C)", |
e4eda3ec | 1455 | sym->name, &sym->declared_at, |
1456 | sym->ns->proc_name->name); | |
60e19868 | 1457 | retval = false; |
e4eda3ec | 1458 | } |
1459 | } | |
1460 | ||
c5d33754 | 1461 | /* We have to make sure that any param to a bind(c) routine does |
1462 | not have the allocatable, pointer, or optional attributes, | |
1463 | according to J3/04-007, section 5.1. */ | |
a435dc3a | 1464 | if (sym->attr.allocatable == 1 |
2e2156cf | 1465 | && !gfc_notify_std (GFC_STD_F2018, "Variable %qs at %L with " |
0d2b3c9c | 1466 | "ALLOCATABLE attribute in procedure %qs " |
a435dc3a | 1467 | "with BIND(C)", sym->name, |
1468 | &(sym->declared_at), | |
1469 | sym->ns->proc_name->name)) | |
1470 | retval = false; | |
1471 | ||
1472 | if (sym->attr.pointer == 1 | |
2e2156cf | 1473 | && !gfc_notify_std (GFC_STD_F2018, "Variable %qs at %L with " |
0d2b3c9c | 1474 | "POINTER attribute in procedure %qs " |
a435dc3a | 1475 | "with BIND(C)", sym->name, |
1476 | &(sym->declared_at), | |
1477 | sym->ns->proc_name->name)) | |
1478 | retval = false; | |
1479 | ||
1480 | if ((sym->attr.allocatable || sym->attr.pointer) && !sym->as) | |
c5d33754 | 1481 | { |
716da296 | 1482 | gfc_error ("Scalar variable %qs at %L with POINTER or " |
1483 | "ALLOCATABLE in procedure %qs with BIND(C) is not yet" | |
a435dc3a | 1484 | " supported", sym->name, &(sym->declared_at), |
c5d33754 | 1485 | sym->ns->proc_name->name); |
60e19868 | 1486 | retval = false; |
c5d33754 | 1487 | } |
1488 | ||
495e197c | 1489 | if (sym->attr.optional == 1 && sym->attr.value) |
c5d33754 | 1490 | { |
716da296 | 1491 | gfc_error ("Variable %qs at %L cannot have both the OPTIONAL " |
1492 | "and the VALUE attribute because procedure %qs " | |
495e197c | 1493 | "is BIND(C)", sym->name, &(sym->declared_at), |
c5d33754 | 1494 | sym->ns->proc_name->name); |
60e19868 | 1495 | retval = false; |
c5d33754 | 1496 | } |
495e197c | 1497 | else if (sym->attr.optional == 1 |
2e2156cf | 1498 | && !gfc_notify_std (GFC_STD_F2018, "Variable %qs " |
60e19868 | 1499 | "at %L with OPTIONAL attribute in " |
76e207a9 | 1500 | "procedure %qs which is BIND(C)", |
1501 | sym->name, &(sym->declared_at), | |
60e19868 | 1502 | sym->ns->proc_name->name)) |
1503 | retval = false; | |
c5d33754 | 1504 | |
1505 | /* Make sure that if it has the dimension attribute, that it is | |
9350ae4e | 1506 | either assumed size or explicit shape. Deferred shape is already |
1507 | covered by the pointer/allocatable attribute. */ | |
1508 | if (sym->as != NULL && sym->as->type == AS_ASSUMED_SHAPE | |
2e2156cf | 1509 | && !gfc_notify_std (GFC_STD_F2018, "Assumed-shape array %qs " |
60e19868 | 1510 | "at %L as dummy argument to the BIND(C) " |
2f7de6c1 | 1511 | "procedure %qs at %L", sym->name, |
76e207a9 | 1512 | &(sym->declared_at), |
1513 | sym->ns->proc_name->name, | |
60e19868 | 1514 | &(sym->ns->proc_name->declared_at))) |
1515 | retval = false; | |
c5d33754 | 1516 | } |
1517 | } | |
1518 | ||
1519 | return retval; | |
1520 | } | |
1521 | ||
1522 | ||
1de1b1a9 | 1523 | |
c5d33754 | 1524 | /* Function called by variable_decl() that adds a name to the symbol table. */ |
4ee9c684 | 1525 | |
60e19868 | 1526 | static bool |
3e715c81 | 1527 | build_sym (const char *name, gfc_charlen *cl, bool cl_deferred, |
1a9745d2 | 1528 | gfc_array_spec **as, locus *var_locus) |
4ee9c684 | 1529 | { |
1530 | symbol_attribute attr; | |
1531 | gfc_symbol *sym; | |
9b49c3cb | 1532 | int upper; |
7200bfee | 1533 | gfc_symtree *st; |
1534 | ||
1535 | /* Symbols in a submodule are host associated from the parent module or | |
1536 | submodules. Therefore, they can be overridden by declarations in the | |
1537 | submodule scope. Deal with this by attaching the existing symbol to | |
1538 | a new symtree and recycling the old symtree with a new symbol... */ | |
1539 | st = gfc_find_symtree (gfc_current_ns->sym_root, name); | |
1540 | if (st != NULL && gfc_state_stack->state == COMP_SUBMODULE | |
1541 | && st->n.sym != NULL | |
1542 | && st->n.sym->attr.host_assoc && st->n.sym->attr.used_in_submodule) | |
1543 | { | |
1544 | gfc_symtree *s = gfc_get_unique_symtree (gfc_current_ns); | |
1545 | s->n.sym = st->n.sym; | |
1546 | sym = gfc_new_symbol (name, gfc_current_ns); | |
4ee9c684 | 1547 | |
7200bfee | 1548 | |
1549 | st->n.sym = sym; | |
1550 | sym->refs++; | |
1551 | gfc_set_sym_referenced (sym); | |
1552 | } | |
1553 | /* ...Otherwise generate a new symtree and new symbol. */ | |
1554 | else if (gfc_get_symbol (name, NULL, &sym)) | |
60e19868 | 1555 | return false; |
4ee9c684 | 1556 | |
9b49c3cb | 1557 | /* Check if the name has already been defined as a type. The |
1558 | first letter of the symtree will be in upper case then. Of | |
1559 | course, this is only necessary if the upper case letter is | |
1560 | actually different. */ | |
1561 | ||
1562 | upper = TOUPPER(name[0]); | |
1563 | if (upper != name[0]) | |
1564 | { | |
1565 | char u_name[GFC_MAX_SYMBOL_LEN + 1]; | |
1566 | gfc_symtree *st; | |
9b49c3cb | 1567 | |
d8aad786 | 1568 | gcc_assert (strlen(name) <= GFC_MAX_SYMBOL_LEN); |
1569 | strcpy (u_name, name); | |
9b49c3cb | 1570 | u_name[0] = upper; |
1571 | ||
1572 | st = gfc_find_symtree (gfc_current_ns->sym_root, u_name); | |
1573 | ||
d7cd448a | 1574 | /* STRUCTURE types can alias symbol names */ |
1575 | if (st != 0 && st->n.sym->attr.flavor != FL_STRUCT) | |
9b49c3cb | 1576 | { |
1577 | gfc_error ("Symbol %qs at %C also declared as a type at %L", name, | |
1578 | &st->n.sym->declared_at); | |
1579 | return false; | |
1580 | } | |
1581 | } | |
1582 | ||
f6d0e37a | 1583 | /* Start updating the symbol table. Add basic type attribute if present. */ |
4ee9c684 | 1584 | if (current_ts.type != BT_UNKNOWN |
1a9745d2 | 1585 | && (sym->attr.implicit_type == 0 |
1586 | || !gfc_compare_types (&sym->ts, ¤t_ts)) | |
60e19868 | 1587 | && !gfc_add_type (sym, ¤t_ts, var_locus)) |
1588 | return false; | |
4ee9c684 | 1589 | |
1590 | if (sym->ts.type == BT_CHARACTER) | |
3e715c81 | 1591 | { |
1592 | sym->ts.u.cl = cl; | |
1593 | sym->ts.deferred = cl_deferred; | |
1594 | } | |
4ee9c684 | 1595 | |
1596 | /* Add dimension attribute if present. */ | |
60e19868 | 1597 | if (!gfc_set_array_spec (sym, *as, var_locus)) |
1598 | return false; | |
4ee9c684 | 1599 | *as = NULL; |
1600 | ||
1601 | /* Add attribute to symbol. The copy is so that we can reset the | |
1602 | dimension attribute. */ | |
1603 | attr = current_attr; | |
1604 | attr.dimension = 0; | |
aff518b0 | 1605 | attr.codimension = 0; |
4ee9c684 | 1606 | |
60e19868 | 1607 | if (!gfc_copy_attr (&sym->attr, &attr, var_locus)) |
1608 | return false; | |
4ee9c684 | 1609 | |
c5d33754 | 1610 | /* Finish any work that may need to be done for the binding label, |
1611 | if it's a bind(c). The bind(c) attr is found before the symbol | |
1612 | is made, and before the symbol name (for data decls), so the | |
1613 | current_ts is holding the binding label, or nothing if the | |
1614 | name= attr wasn't given. Therefore, test here if we're dealing | |
1615 | with a bind(c) and make sure the binding label is set correctly. */ | |
1616 | if (sym->attr.is_bind_c == 1) | |
1617 | { | |
7b2060ba | 1618 | if (!sym->binding_label) |
c5d33754 | 1619 | { |
825718f9 | 1620 | /* Set the binding label and verify that if a NAME= was specified |
1621 | then only one identifier was in the entity-decl-list. */ | |
76e207a9 | 1622 | if (!set_binding_label (&sym->binding_label, sym->name, |
60e19868 | 1623 | num_idents_on_line)) |
1624 | return false; | |
c5d33754 | 1625 | } |
1626 | } | |
1627 | ||
1628 | /* See if we know we're in a common block, and if it's a bind(c) | |
1629 | common then we need to make sure we're an interoperable type. */ | |
1630 | if (sym->attr.in_common == 1) | |
1631 | { | |
1632 | /* Test the common block object. */ | |
1633 | if (sym->common_block != NULL && sym->common_block->is_bind_c == 1 | |
1634 | && sym->ts.is_c_interop != 1) | |
1635 | { | |
bf79c656 | 1636 | gfc_error_now ("Variable %qs in common block %qs at %C " |
c5d33754 | 1637 | "must be declared with a C interoperable " |
bf79c656 | 1638 | "kind since common block %qs is BIND(C)", |
c5d33754 | 1639 | sym->name, sym->common_block->name, |
1640 | sym->common_block->name); | |
1641 | gfc_clear_error (); | |
1642 | } | |
1643 | } | |
1644 | ||
2457a77e | 1645 | sym->attr.implied_index = 0; |
1646 | ||
9d958d5b | 1647 | /* Use the parameter expressions for a parameterized derived type. */ |
1648 | if ((sym->ts.type == BT_DERIVED || sym->ts.type == BT_CLASS) | |
1649 | && sym->ts.u.derived->attr.pdt_type && type_param_spec_list) | |
1650 | sym->param_list = gfc_copy_actual_arglist (type_param_spec_list); | |
1651 | ||
fa102e56 | 1652 | if (sym->ts.type == BT_CLASS) |
e8393d49 | 1653 | return gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as); |
1de1b1a9 | 1654 | |
60e19868 | 1655 | return true; |
4ee9c684 | 1656 | } |
1657 | ||
1a9745d2 | 1658 | |
a270dc8e | 1659 | /* Set character constant to the given length. The constant will be padded or |
d1a39099 | 1660 | truncated. If we're inside an array constructor without a typespec, we |
1661 | additionally check that all elements have the same length; check_len -1 | |
1662 | means no checking. */ | |
a270dc8e | 1663 | |
1664 | void | |
bdfec5bf | 1665 | gfc_set_constant_character_len (gfc_charlen_t len, gfc_expr *expr, |
1666 | gfc_charlen_t check_len) | |
a270dc8e | 1667 | { |
c32f863c | 1668 | gfc_char_t *s; |
bdfec5bf | 1669 | gfc_charlen_t slen; |
a270dc8e | 1670 | |
00fff882 | 1671 | if (expr->ts.type != BT_CHARACTER) |
1672 | return; | |
6ade726e | 1673 | |
3badc59b | 1674 | if (expr->expr_type != EXPR_CONSTANT) |
1675 | { | |
1676 | gfc_error_now ("CHARACTER length must be a constant at %L", &expr->where); | |
1677 | return; | |
1678 | } | |
a270dc8e | 1679 | |
1680 | slen = expr->value.character.length; | |
1681 | if (len != slen) | |
1682 | { | |
c32f863c | 1683 | s = gfc_get_wide_string (len + 1); |
1684 | memcpy (s, expr->value.character.string, | |
1685 | MIN (len, slen) * sizeof (gfc_char_t)); | |
a270dc8e | 1686 | if (len > slen) |
c32f863c | 1687 | gfc_wide_memset (&s[slen], ' ', len - slen); |
1bfea7e8 | 1688 | |
fed21cc2 | 1689 | if (warn_character_truncation && slen > len) |
bf79c656 | 1690 | gfc_warning_now (OPT_Wcharacter_truncation, |
1691 | "CHARACTER expression at %L is being truncated " | |
bdfec5bf | 1692 | "(%ld/%ld)", &expr->where, |
1693 | (long) slen, (long) len); | |
1bfea7e8 | 1694 | |
1695 | /* Apply the standard by 'hand' otherwise it gets cleared for | |
1696 | initializers. */ | |
d1a39099 | 1697 | if (check_len != -1 && slen != check_len |
1698 | && !(gfc_option.allow_std & GFC_STD_GNU)) | |
1bfea7e8 | 1699 | gfc_error_now ("The CHARACTER elements of the array constructor " |
bdfec5bf | 1700 | "at %L must have the same length (%ld/%ld)", |
1701 | &expr->where, (long) slen, | |
1702 | (long) check_len); | |
1bfea7e8 | 1703 | |
89f528df | 1704 | s[len] = '\0'; |
434f0922 | 1705 | free (expr->value.character.string); |
a270dc8e | 1706 | expr->value.character.string = s; |
1707 | expr->value.character.length = len; | |
1708 | } | |
1709 | } | |
4ee9c684 | 1710 | |
3b6a4b41 | 1711 | |
e14bee04 | 1712 | /* Function to create and update the enumerator history |
3b6a4b41 | 1713 | using the information passed as arguments. |
e14bee04 | 1714 | Pointer "max_enum" is also updated, to point to |
1715 | enum history node containing largest initializer. | |
3b6a4b41 | 1716 | |
1717 | SYM points to the symbol node of enumerator. | |
f6d0e37a | 1718 | INIT points to its enumerator value. */ |
3b6a4b41 | 1719 | |
e14bee04 | 1720 | static void |
1a9745d2 | 1721 | create_enum_history (gfc_symbol *sym, gfc_expr *init) |
3b6a4b41 | 1722 | { |
1723 | enumerator_history *new_enum_history; | |
1724 | gcc_assert (sym != NULL && init != NULL); | |
1725 | ||
48d8ad5a | 1726 | new_enum_history = XCNEW (enumerator_history); |
3b6a4b41 | 1727 | |
1728 | new_enum_history->sym = sym; | |
1729 | new_enum_history->initializer = init; | |
1730 | new_enum_history->next = NULL; | |
1731 | ||
1732 | if (enum_history == NULL) | |
1733 | { | |
1734 | enum_history = new_enum_history; | |
1735 | max_enum = enum_history; | |
1736 | } | |
1737 | else | |
1738 | { | |
1739 | new_enum_history->next = enum_history; | |
1740 | enum_history = new_enum_history; | |
1741 | ||
e14bee04 | 1742 | if (mpz_cmp (max_enum->initializer->value.integer, |
3b6a4b41 | 1743 | new_enum_history->initializer->value.integer) < 0) |
1a9745d2 | 1744 | max_enum = new_enum_history; |
3b6a4b41 | 1745 | } |
1746 | } | |
1747 | ||
1748 | ||
e14bee04 | 1749 | /* Function to free enum kind history. */ |
3b6a4b41 | 1750 | |
e14bee04 | 1751 | void |
1a9745d2 | 1752 | gfc_free_enum_history (void) |
3b6a4b41 | 1753 | { |
e14bee04 | 1754 | enumerator_history *current = enum_history; |
1755 | enumerator_history *next; | |
3b6a4b41 | 1756 | |
1757 | while (current != NULL) | |
1758 | { | |
1759 | next = current->next; | |
434f0922 | 1760 | free (current); |
3b6a4b41 | 1761 | current = next; |
1762 | } | |
1763 | max_enum = NULL; | |
1764 | enum_history = NULL; | |
1765 | } | |
1766 | ||
1767 | ||
4ee9c684 | 1768 | /* Function called by variable_decl() that adds an initialization |
1769 | expression to a symbol. */ | |
1770 | ||
60e19868 | 1771 | static bool |
f6d0e37a | 1772 | add_init_expr_to_sym (const char *name, gfc_expr **initp, locus *var_locus) |
4ee9c684 | 1773 | { |
1774 | symbol_attribute attr; | |
1775 | gfc_symbol *sym; | |
1776 | gfc_expr *init; | |
1777 | ||
1778 | init = *initp; | |
36b0a1b0 | 1779 | if (find_special (name, &sym, false)) |
60e19868 | 1780 | return false; |
4ee9c684 | 1781 | |
1782 | attr = sym->attr; | |
1783 | ||
1784 | /* If this symbol is confirming an implicit parameter type, | |
1785 | then an initialization expression is not allowed. */ | |
1786 | if (attr.flavor == FL_PARAMETER | |
1787 | && sym->value != NULL | |
1788 | && *initp != NULL) | |
1789 | { | |
716da296 | 1790 | gfc_error ("Initializer not allowed for PARAMETER %qs at %C", |
4ee9c684 | 1791 | sym->name); |
60e19868 | 1792 | return false; |
4ee9c684 | 1793 | } |
1794 | ||
1795 | if (init == NULL) | |
1796 | { | |
1797 | /* An initializer is required for PARAMETER declarations. */ | |
1798 | if (attr.flavor == FL_PARAMETER) | |
1799 | { | |
1800 | gfc_error ("PARAMETER at %L is missing an initializer", var_locus); | |
60e19868 | 1801 | return false; |
4ee9c684 | 1802 | } |
1803 | } | |
1804 | else | |
1805 | { | |
1806 | /* If a variable appears in a DATA block, it cannot have an | |
b97f1a18 | 1807 | initializer. */ |
4ee9c684 | 1808 | if (sym->attr.data) |
1809 | { | |
716da296 | 1810 | gfc_error ("Variable %qs at %C with an initializer already " |
1a9745d2 | 1811 | "appears in a DATA statement", sym->name); |
60e19868 | 1812 | return false; |
4ee9c684 | 1813 | } |
1814 | ||
cca3db55 | 1815 | /* Check if the assignment can happen. This has to be put off |
23d075f4 | 1816 | until later for derived type variables and procedure pointers. */ |
d7cd448a | 1817 | if (!gfc_bt_struct (sym->ts.type) && !gfc_bt_struct (init->ts.type) |
1de1b1a9 | 1818 | && sym->ts.type != BT_CLASS && init->ts.type != BT_CLASS |
8db94b3b | 1819 | && !sym->attr.proc_pointer |
60e19868 | 1820 | && !gfc_check_assign_symbol (sym, NULL, init)) |
1821 | return false; | |
4ee9c684 | 1822 | |
eeebe20b | 1823 | if (sym->ts.type == BT_CHARACTER && sym->ts.u.cl |
da540712 | 1824 | && init->ts.type == BT_CHARACTER) |
a270dc8e | 1825 | { |
1826 | /* Update symbol character length according initializer. */ | |
60e19868 | 1827 | if (!gfc_check_assign_symbol (sym, NULL, init)) |
1828 | return false; | |
da540712 | 1829 | |
eeebe20b | 1830 | if (sym->ts.u.cl->length == NULL) |
a270dc8e | 1831 | { |
9f4d9f83 | 1832 | gfc_charlen_t clen; |
f6d0e37a | 1833 | /* If there are multiple CHARACTER variables declared on the |
1834 | same line, we don't want them to share the same length. */ | |
d270ce52 | 1835 | sym->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
e9c873a4 | 1836 | |
03c2a028 | 1837 | if (sym->attr.flavor == FL_PARAMETER) |
1838 | { | |
1839 | if (init->expr_type == EXPR_CONSTANT) | |
1840 | { | |
1841 | clen = init->value.character.length; | |
126387b5 | 1842 | sym->ts.u.cl->length |
9f4d9f83 | 1843 | = gfc_get_int_expr (gfc_charlen_int_kind, |
126387b5 | 1844 | NULL, clen); |
03c2a028 | 1845 | } |
1846 | else if (init->expr_type == EXPR_ARRAY) | |
1847 | { | |
fc9b0d53 | 1848 | if (init->ts.u.cl && init->ts.u.cl->length) |
cde225a2 | 1849 | { |
1850 | const gfc_expr *length = init->ts.u.cl->length; | |
1851 | if (length->expr_type != EXPR_CONSTANT) | |
1852 | { | |
1853 | gfc_error ("Cannot initialize parameter array " | |
1854 | "at %L " | |
1855 | "with variable length elements", | |
1856 | &sym->declared_at); | |
1857 | return false; | |
1858 | } | |
1859 | clen = mpz_get_si (length->value.integer); | |
1860 | } | |
9123b22a | 1861 | else if (init->value.constructor) |
1862 | { | |
1863 | gfc_constructor *c; | |
76e207a9 | 1864 | c = gfc_constructor_first (init->value.constructor); |
9123b22a | 1865 | clen = c->expr->value.character.length; |
1866 | } | |
1867 | else | |
1868 | gcc_unreachable (); | |
126387b5 | 1869 | sym->ts.u.cl->length |
9f4d9f83 | 1870 | = gfc_get_int_expr (gfc_charlen_int_kind, |
126387b5 | 1871 | NULL, clen); |
03c2a028 | 1872 | } |
eeebe20b | 1873 | else if (init->ts.u.cl && init->ts.u.cl->length) |
1874 | sym->ts.u.cl->length = | |
1875 | gfc_copy_expr (sym->value->ts.u.cl->length); | |
03c2a028 | 1876 | } |
a270dc8e | 1877 | } |
1878 | /* Update initializer character length according symbol. */ | |
eeebe20b | 1879 | else if (sym->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
a270dc8e | 1880 | { |
f8e2139b | 1881 | if (!gfc_specification_expr (sym->ts.u.cl->length)) |
1882 | return false; | |
1883 | ||
90ace78f | 1884 | int k = gfc_validate_kind (BT_INTEGER, gfc_charlen_int_kind, |
1885 | false); | |
1886 | /* resolve_charlen will complain later on if the length | |
1887 | is too large. Just skeep the initialization in that case. */ | |
1888 | if (mpz_cmp (sym->ts.u.cl->length->value.integer, | |
1889 | gfc_integer_kinds[k].huge) <= 0) | |
a270dc8e | 1890 | { |
90ace78f | 1891 | HOST_WIDE_INT len |
1892 | = gfc_mpz_get_hwi (sym->ts.u.cl->length->value.integer); | |
1893 | ||
1894 | if (init->expr_type == EXPR_CONSTANT) | |
1895 | gfc_set_constant_character_len (len, init, -1); | |
1896 | else if (init->expr_type == EXPR_ARRAY) | |
1897 | { | |
1898 | gfc_constructor *c; | |
126387b5 | 1899 | |
90ace78f | 1900 | /* Build a new charlen to prevent simplification from |
1901 | deleting the length before it is resolved. */ | |
1902 | init->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); | |
1903 | init->ts.u.cl->length | |
1904 | = gfc_copy_expr (sym->ts.u.cl->length); | |
39908fd9 | 1905 | |
90ace78f | 1906 | for (c = gfc_constructor_first (init->value.constructor); |
1907 | c; c = gfc_constructor_next (c)) | |
1908 | gfc_set_constant_character_len (len, c->expr, -1); | |
1909 | } | |
a270dc8e | 1910 | } |
1911 | } | |
1912 | } | |
1913 | ||
ae2864a8 | 1914 | /* If sym is implied-shape, set its upper bounds from init. */ |
1915 | if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension | |
1916 | && sym->as->type == AS_IMPLIED_SHAPE) | |
1917 | { | |
1918 | int dim; | |
1919 | ||
1920 | if (init->rank == 0) | |
1921 | { | |
1922 | gfc_error ("Can't initialize implied-shape array at %L" | |
1923 | " with scalar", &sym->declared_at); | |
60e19868 | 1924 | return false; |
ae2864a8 | 1925 | } |
ae2864a8 | 1926 | |
1927 | /* Shape should be present, we get an initialization expression. */ | |
1928 | gcc_assert (init->shape); | |
1929 | ||
1930 | for (dim = 0; dim < sym->as->rank; ++dim) | |
1931 | { | |
1932 | int k; | |
0c0c5469 | 1933 | gfc_expr *e, *lower; |
8db94b3b | 1934 | |
ae2864a8 | 1935 | lower = sym->as->lower[dim]; |
0c0c5469 | 1936 | |
76e207a9 | 1937 | /* If the lower bound is an array element from another |
0c0c5469 | 1938 | parameterized array, then it is marked with EXPR_VARIABLE and |
1939 | is an initialization expression. Try to reduce it. */ | |
1940 | if (lower->expr_type == EXPR_VARIABLE) | |
1941 | gfc_reduce_init_expr (lower); | |
1942 | ||
1943 | if (lower->expr_type == EXPR_CONSTANT) | |
1944 | { | |
1945 | /* All dimensions must be without upper bound. */ | |
1946 | gcc_assert (!sym->as->upper[dim]); | |
1947 | ||
1948 | k = lower->ts.kind; | |
1949 | e = gfc_get_constant_expr (BT_INTEGER, k, &sym->declared_at); | |
1950 | mpz_add (e->value.integer, lower->value.integer, | |
1951 | init->shape[dim]); | |
1952 | mpz_sub_ui (e->value.integer, e->value.integer, 1); | |
1953 | sym->as->upper[dim] = e; | |
1954 | } | |
1955 | else | |
ae2864a8 | 1956 | { |
1957 | gfc_error ("Non-constant lower bound in implied-shape" | |
1958 | " declaration at %L", &lower->where); | |
60e19868 | 1959 | return false; |
ae2864a8 | 1960 | } |
ae2864a8 | 1961 | } |
1962 | ||
1963 | sym->as->type = AS_EXPLICIT; | |
1964 | } | |
1965 | ||
c5d33754 | 1966 | /* Need to check if the expression we initialized this |
1967 | to was one of the iso_c_binding named constants. If so, | |
1968 | and we're a parameter (constant), let it be iso_c. | |
1969 | For example: | |
1970 | integer(c_int), parameter :: my_int = c_int | |
1971 | integer(my_int) :: my_int_2 | |
1972 | If we mark my_int as iso_c (since we can see it's value | |
1973 | is equal to one of the named constants), then my_int_2 | |
1974 | will be considered C interoperable. */ | |
d7cd448a | 1975 | if (sym->ts.type != BT_CHARACTER && !gfc_bt_struct (sym->ts.type)) |
c5d33754 | 1976 | { |
1977 | sym->ts.is_iso_c |= init->ts.is_iso_c; | |
1978 | sym->ts.is_c_interop |= init->ts.is_c_interop; | |
1979 | /* attr bits needed for module files. */ | |
1980 | sym->attr.is_iso_c |= init->ts.is_iso_c; | |
1981 | sym->attr.is_c_interop |= init->ts.is_c_interop; | |
1982 | if (init->ts.is_iso_c) | |
1983 | sym->ts.f90_type = init->ts.f90_type; | |
1984 | } | |
126387b5 | 1985 | |
4ee9c684 | 1986 | /* Add initializer. Make sure we keep the ranks sane. */ |
1987 | if (sym->attr.dimension && init->rank == 0) | |
7baa3fb4 | 1988 | { |
1989 | mpz_t size; | |
1990 | gfc_expr *array; | |
7baa3fb4 | 1991 | int n; |
1992 | if (sym->attr.flavor == FL_PARAMETER | |
1993 | && init->expr_type == EXPR_CONSTANT | |
60e19868 | 1994 | && spec_size (sym->as, &size) |
7baa3fb4 | 1995 | && mpz_cmp_si (size, 0) > 0) |
1996 | { | |
126387b5 | 1997 | array = gfc_get_array_expr (init->ts.type, init->ts.kind, |
1998 | &init->where); | |
7baa3fb4 | 1999 | for (n = 0; n < (int)mpz_get_si (size); n++) |
126387b5 | 2000 | gfc_constructor_append_expr (&array->value.constructor, |
2001 | n == 0 | |
2002 | ? init | |
2003 | : gfc_copy_expr (init), | |
2004 | &init->where); | |
8db94b3b | 2005 | |
7baa3fb4 | 2006 | array->shape = gfc_get_shape (sym->as->rank); |
2007 | for (n = 0; n < sym->as->rank; n++) | |
2008 | spec_dimen_size (sym->as, n, &array->shape[n]); | |
2009 | ||
2010 | init = array; | |
2011 | mpz_clear (size); | |
2012 | } | |
2013 | init->rank = sym->as->rank; | |
2014 | } | |
4ee9c684 | 2015 | |
2016 | sym->value = init; | |
3cd3c667 | 2017 | if (sym->attr.save == SAVE_NONE) |
2018 | sym->attr.save = SAVE_IMPLICIT; | |
4ee9c684 | 2019 | *initp = NULL; |
2020 | } | |
2021 | ||
60e19868 | 2022 | return true; |
4ee9c684 | 2023 | } |
2024 | ||
2025 | ||
2026 | /* Function called by variable_decl() that adds a name to a structure | |
2027 | being built. */ | |
2028 | ||
60e19868 | 2029 | static bool |
1a9745d2 | 2030 | build_struct (const char *name, gfc_charlen *cl, gfc_expr **init, |
2031 | gfc_array_spec **as) | |
4ee9c684 | 2032 | { |
d7cd448a | 2033 | gfc_state_data *s; |
4ee9c684 | 2034 | gfc_component *c; |
2035 | ||
53d2e124 | 2036 | /* F03:C438/C439. If the current symbol is of the same derived type that we're |
4ee9c684 | 2037 | constructing, it must have the pointer attribute. */ |
53d2e124 | 2038 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
eeebe20b | 2039 | && current_ts.u.derived == gfc_current_block () |
4ee9c684 | 2040 | && current_attr.pointer == 0) |
2041 | { | |
dd7553fe | 2042 | if (current_attr.allocatable |
2043 | && !gfc_notify_std(GFC_STD_F2008, "Component at %C " | |
2044 | "must have the POINTER attribute")) | |
2045 | { | |
2046 | return false; | |
2047 | } | |
2048 | else if (current_attr.allocatable == 0) | |
2049 | { | |
abfb4be5 | 2050 | gfc_error ("Component at %C must have the POINTER attribute"); |
2051 | return false; | |
2052 | } | |
4ee9c684 | 2053 | } |
abfb4be5 | 2054 | |
2055 | /* F03:C437. */ | |
2056 | if (current_ts.type == BT_CLASS | |
2057 | && !(current_attr.pointer || current_attr.allocatable)) | |
2058 | { | |
2059 | gfc_error ("Component %qs with CLASS at %C must be allocatable " | |
2060 | "or pointer", name); | |
2061 | return false; | |
dd7553fe | 2062 | } |
4ee9c684 | 2063 | |
1a9745d2 | 2064 | if (gfc_current_block ()->attr.pointer && (*as)->rank != 0) |
4ee9c684 | 2065 | { |
2066 | if ((*as)->type != AS_DEFERRED && (*as)->type != AS_EXPLICIT) | |
2067 | { | |
2068 | gfc_error ("Array component of structure at %C must have explicit " | |
2069 | "or deferred shape"); | |
60e19868 | 2070 | return false; |
4ee9c684 | 2071 | } |
2072 | } | |
2073 | ||
d7cd448a | 2074 | /* If we are in a nested union/map definition, gfc_add_component will not |
2075 | properly find repeated components because: | |
7d7125df | 2076 | (i) gfc_add_component does a flat search, where components of unions |
d7cd448a | 2077 | and maps are implicity chained so nested components may conflict. |
2078 | (ii) Unions and maps are not linked as components of their parent | |
2079 | structures until after they are parsed. | |
2080 | For (i) we use gfc_find_component which searches recursively, and for (ii) | |
2081 | we search each block directly from the parse stack until we find the top | |
2082 | level structure. */ | |
2083 | ||
2084 | s = gfc_state_stack; | |
2085 | if (s->state == COMP_UNION || s->state == COMP_MAP) | |
2086 | { | |
2087 | while (s->state == COMP_UNION || gfc_comp_struct (s->state)) | |
2088 | { | |
2089 | c = gfc_find_component (s->sym, name, true, true, NULL); | |
2090 | if (c != NULL) | |
2091 | { | |
1b7008c4 | 2092 | gfc_error_now ("Component %qs at %C already declared at %L", |
d7cd448a | 2093 | name, &c->loc); |
2094 | return false; | |
2095 | } | |
2096 | /* Break after we've searched the entire chain. */ | |
2097 | if (s->state == COMP_DERIVED || s->state == COMP_STRUCTURE) | |
2098 | break; | |
2099 | s = s->previous; | |
2100 | } | |
2101 | } | |
2102 | ||
60e19868 | 2103 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
2104 | return false; | |
4ee9c684 | 2105 | |
2106 | c->ts = current_ts; | |
eeebe20b | 2107 | if (c->ts.type == BT_CHARACTER) |
2108 | c->ts.u.cl = cl; | |
9d958d5b | 2109 | |
2110 | if (c->ts.type != BT_CLASS && c->ts.type != BT_DERIVED | |
f0efd2e8 | 2111 | && (c->ts.kind == 0 || c->ts.type == BT_CHARACTER) |
2112 | && saved_kind_expr != NULL) | |
9d958d5b | 2113 | c->kind_expr = gfc_copy_expr (saved_kind_expr); |
2114 | ||
3be2b8d5 | 2115 | c->attr = current_attr; |
4ee9c684 | 2116 | |
2117 | c->initializer = *init; | |
2118 | *init = NULL; | |
2119 | ||
2120 | c->as = *as; | |
2121 | if (c->as != NULL) | |
aff518b0 | 2122 | { |
2123 | if (c->as->corank) | |
2124 | c->attr.codimension = 1; | |
2125 | if (c->as->rank) | |
2126 | c->attr.dimension = 1; | |
2127 | } | |
4ee9c684 | 2128 | *as = NULL; |
2129 | ||
36d310d0 | 2130 | gfc_apply_init (&c->ts, &c->attr, c->initializer); |
a2f51d5f | 2131 | |
4ee9c684 | 2132 | /* Check array components. */ |
3be2b8d5 | 2133 | if (!c->attr.dimension) |
b3704193 | 2134 | goto scalar; |
4ee9c684 | 2135 | |
3be2b8d5 | 2136 | if (c->attr.pointer) |
4ee9c684 | 2137 | { |
2138 | if (c->as->type != AS_DEFERRED) | |
2139 | { | |
2294b616 | 2140 | gfc_error ("Pointer array component of structure at %C must have a " |
2141 | "deferred shape"); | |
2fa20713 | 2142 | return false; |
2294b616 | 2143 | } |
2144 | } | |
3be2b8d5 | 2145 | else if (c->attr.allocatable) |
2294b616 | 2146 | { |
2147 | if (c->as->type != AS_DEFERRED) | |
2148 | { | |
2149 | gfc_error ("Allocatable component of structure at %C must have a " | |
2150 | "deferred shape"); | |
2fa20713 | 2151 | return false; |
4ee9c684 | 2152 | } |
2153 | } | |
2154 | else | |
2155 | { | |
2156 | if (c->as->type != AS_EXPLICIT) | |
2157 | { | |
1a9745d2 | 2158 | gfc_error ("Array component of structure at %C must have an " |
2159 | "explicit shape"); | |
2fa20713 | 2160 | return false; |
4ee9c684 | 2161 | } |
2162 | } | |
2163 | ||
b3704193 | 2164 | scalar: |
2165 | if (c->ts.type == BT_CLASS) | |
2fa20713 | 2166 | return gfc_build_class_symbol (&c->ts, &c->attr, &c->as); |
431a19be | 2167 | |
9d958d5b | 2168 | if (c->attr.pdt_kind || c->attr.pdt_len) |
2169 | { | |
2170 | gfc_symbol *sym; | |
2171 | gfc_find_symbol (c->name, gfc_current_block ()->f2k_derived, | |
2172 | 0, &sym); | |
2173 | if (sym == NULL) | |
2174 | { | |
2175 | gfc_error ("Type parameter %qs at %C has no corresponding entry " | |
2176 | "in the type parameter name list at %L", | |
2177 | c->name, &gfc_current_block ()->declared_at); | |
2178 | return false; | |
2179 | } | |
2180 | sym->ts = c->ts; | |
2181 | sym->attr.pdt_kind = c->attr.pdt_kind; | |
2182 | sym->attr.pdt_len = c->attr.pdt_len; | |
2183 | if (c->initializer) | |
2184 | sym->value = gfc_copy_expr (c->initializer); | |
2185 | sym->attr.flavor = FL_VARIABLE; | |
2186 | } | |
2187 | ||
2188 | if ((c->ts.type == BT_DERIVED || c->ts.type == BT_CLASS) | |
2189 | && c->ts.u.derived && c->ts.u.derived->attr.pdt_template | |
2190 | && decl_type_param_list) | |
2191 | c->param_list = gfc_copy_actual_arglist (decl_type_param_list); | |
2192 | ||
2fa20713 | 2193 | return true; |
4ee9c684 | 2194 | } |
2195 | ||
2196 | ||
2197 | /* Match a 'NULL()', and possibly take care of some side effects. */ | |
2198 | ||
2199 | match | |
1a9745d2 | 2200 | gfc_match_null (gfc_expr **result) |
4ee9c684 | 2201 | { |
2202 | gfc_symbol *sym; | |
f9d34e9a | 2203 | match m, m2 = MATCH_NO; |
4ee9c684 | 2204 | |
f9d34e9a | 2205 | if ((m = gfc_match (" null ( )")) == MATCH_ERROR) |
2206 | return MATCH_ERROR; | |
2207 | ||
2208 | if (m == MATCH_NO) | |
2209 | { | |
2210 | locus old_loc; | |
2211 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
2212 | ||
d780a64b | 2213 | if ((m2 = gfc_match (" null (")) != MATCH_YES) |
f9d34e9a | 2214 | return m2; |
2215 | ||
2216 | old_loc = gfc_current_locus; | |
2217 | if ((m2 = gfc_match (" %n ) ", name)) == MATCH_ERROR) | |
2218 | return MATCH_ERROR; | |
2219 | if (m2 != MATCH_YES | |
2220 | && ((m2 = gfc_match (" mold = %n )", name)) == MATCH_ERROR)) | |
2221 | return MATCH_ERROR; | |
2222 | if (m2 == MATCH_NO) | |
2223 | { | |
2224 | gfc_current_locus = old_loc; | |
2225 | return MATCH_NO; | |
2226 | } | |
2227 | } | |
4ee9c684 | 2228 | |
2229 | /* The NULL symbol now has to be/become an intrinsic function. */ | |
2230 | if (gfc_get_symbol ("null", NULL, &sym)) | |
2231 | { | |
2232 | gfc_error ("NULL() initialization at %C is ambiguous"); | |
2233 | return MATCH_ERROR; | |
2234 | } | |
2235 | ||
2236 | gfc_intrinsic_symbol (sym); | |
2237 | ||
2238 | if (sym->attr.proc != PROC_INTRINSIC | |
ddf8ce2d | 2239 | && !(sym->attr.use_assoc && sym->attr.intrinsic) |
60e19868 | 2240 | && (!gfc_add_procedure(&sym->attr, PROC_INTRINSIC, sym->name, NULL) |
2241 | || !gfc_add_function (&sym->attr, sym->name, NULL))) | |
4ee9c684 | 2242 | return MATCH_ERROR; |
2243 | ||
126387b5 | 2244 | *result = gfc_get_null_expr (&gfc_current_locus); |
4ee9c684 | 2245 | |
f9d34e9a | 2246 | /* Invalid per F2008, C512. */ |
2247 | if (m2 == MATCH_YES) | |
2248 | { | |
2249 | gfc_error ("NULL() initialization at %C may not have MOLD"); | |
2250 | return MATCH_ERROR; | |
2251 | } | |
2252 | ||
4ee9c684 | 2253 | return MATCH_YES; |
2254 | } | |
2255 | ||
2256 | ||
23d075f4 | 2257 | /* Match the initialization expr for a data pointer or procedure pointer. */ |
2258 | ||
2259 | static match | |
2260 | match_pointer_init (gfc_expr **init, int procptr) | |
2261 | { | |
2262 | match m; | |
2263 | ||
d7cd448a | 2264 | if (gfc_pure (NULL) && !gfc_comp_struct (gfc_state_stack->state)) |
23d075f4 | 2265 | { |
2266 | gfc_error ("Initialization of pointer at %C is not allowed in " | |
2267 | "a PURE procedure"); | |
2268 | return MATCH_ERROR; | |
2269 | } | |
c77badf3 | 2270 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
23d075f4 | 2271 | |
df084314 | 2272 | /* Match NULL() initialization. */ |
23d075f4 | 2273 | m = gfc_match_null (init); |
2274 | if (m != MATCH_NO) | |
2275 | return m; | |
2276 | ||
2277 | /* Match non-NULL initialization. */ | |
f3efaada | 2278 | gfc_matching_ptr_assignment = !procptr; |
23d075f4 | 2279 | gfc_matching_procptr_assignment = procptr; |
2280 | m = gfc_match_rvalue (init); | |
f3efaada | 2281 | gfc_matching_ptr_assignment = 0; |
23d075f4 | 2282 | gfc_matching_procptr_assignment = 0; |
2283 | if (m == MATCH_ERROR) | |
2284 | return MATCH_ERROR; | |
2285 | else if (m == MATCH_NO) | |
2286 | { | |
2287 | gfc_error ("Error in pointer initialization at %C"); | |
2288 | return MATCH_ERROR; | |
2289 | } | |
2290 | ||
7c94d8e5 | 2291 | if (!procptr && !gfc_resolve_expr (*init)) |
2292 | return MATCH_ERROR; | |
8db94b3b | 2293 | |
60e19868 | 2294 | if (!gfc_notify_std (GFC_STD_F2008, "non-NULL pointer " |
2295 | "initialization at %C")) | |
23d075f4 | 2296 | return MATCH_ERROR; |
2297 | ||
2298 | return MATCH_YES; | |
2299 | } | |
2300 | ||
2301 | ||
60e19868 | 2302 | static bool |
f3e89339 | 2303 | check_function_name (char *name) |
2304 | { | |
2305 | /* In functions that have a RESULT variable defined, the function name always | |
2306 | refers to function calls. Therefore, the name is not allowed to appear in | |
2307 | specification statements. When checking this, be careful about | |
2308 | 'hidden' procedure pointer results ('ppr@'). */ | |
2309 | ||
2310 | if (gfc_current_state () == COMP_FUNCTION) | |
2311 | { | |
2312 | gfc_symbol *block = gfc_current_block (); | |
2313 | if (block && block->result && block->result != block | |
2314 | && strcmp (block->result->name, "ppr@") != 0 | |
2315 | && strcmp (block->name, name) == 0) | |
2316 | { | |
2c6ca8fc | 2317 | gfc_error ("RESULT variable %qs at %L prohibits FUNCTION name %qs at %C " |
2318 | "from appearing in a specification statement", | |
2319 | block->result->name, &block->result->declared_at, name); | |
60e19868 | 2320 | return false; |
f3e89339 | 2321 | } |
2322 | } | |
2323 | ||
60e19868 | 2324 | return true; |
f3e89339 | 2325 | } |
2326 | ||
2327 | ||
4ee9c684 | 2328 | /* Match a variable name with an optional initializer. When this |
2329 | subroutine is called, a variable is expected to be parsed next. | |
2330 | Depending on what is happening at the moment, updates either the | |
2331 | symbol table or the current interface. */ | |
2332 | ||
2333 | static match | |
3923b69f | 2334 | variable_decl (int elem) |
4ee9c684 | 2335 | { |
2336 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8ef2cf76 | 2337 | static unsigned int fill_id = 0; |
4ee9c684 | 2338 | gfc_expr *initializer, *char_len; |
2339 | gfc_array_spec *as; | |
b549d2a5 | 2340 | gfc_array_spec *cp_as; /* Extra copy for Cray Pointees. */ |
4ee9c684 | 2341 | gfc_charlen *cl; |
3e715c81 | 2342 | bool cl_deferred; |
4ee9c684 | 2343 | locus var_locus; |
2344 | match m; | |
60e19868 | 2345 | bool t; |
b549d2a5 | 2346 | gfc_symbol *sym; |
4ee9c684 | 2347 | |
2348 | initializer = NULL; | |
2349 | as = NULL; | |
b549d2a5 | 2350 | cp_as = NULL; |
4ee9c684 | 2351 | |
2352 | /* When we get here, we've just matched a list of attributes and | |
2353 | maybe a type and a double colon. The next thing we expect to see | |
2354 | is the name of the symbol. */ | |
8ef2cf76 | 2355 | |
2356 | /* If we are parsing a structure with legacy support, we allow the symbol | |
2357 | name to be '%FILL' which gives it an anonymous (inaccessible) name. */ | |
2358 | m = MATCH_NO; | |
2359 | gfc_gobble_whitespace (); | |
2360 | if (gfc_peek_ascii_char () == '%') | |
2361 | { | |
2362 | gfc_next_ascii_char (); | |
2363 | m = gfc_match ("fill"); | |
2364 | } | |
2365 | ||
4ee9c684 | 2366 | if (m != MATCH_YES) |
8ef2cf76 | 2367 | { |
2368 | m = gfc_match_name (name); | |
2369 | if (m != MATCH_YES) | |
2370 | goto cleanup; | |
2371 | } | |
2372 | ||
2373 | else | |
2374 | { | |
2375 | m = MATCH_ERROR; | |
2376 | if (gfc_current_state () != COMP_STRUCTURE) | |
2377 | { | |
2378 | if (flag_dec_structure) | |
2379 | gfc_error ("%qs not allowed outside STRUCTURE at %C", "%FILL"); | |
2380 | else | |
2381 | gfc_error ("%qs at %C is a DEC extension, enable with " | |
2382 | "%<-fdec-structure%>", "%FILL"); | |
2383 | goto cleanup; | |
2384 | } | |
2385 | ||
2386 | if (attr_seen) | |
2387 | { | |
2388 | gfc_error ("%qs entity cannot have attributes at %C", "%FILL"); | |
2389 | goto cleanup; | |
2390 | } | |
2391 | ||
2392 | /* %FILL components are given invalid fortran names. */ | |
2393 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "%%FILL%u", fill_id++); | |
2394 | m = MATCH_YES; | |
2395 | } | |
4ee9c684 | 2396 | |
cbb9e6aa | 2397 | var_locus = gfc_current_locus; |
4ee9c684 | 2398 | |
2399 | /* Now we could see the optional array spec. or character length. */ | |
aff518b0 | 2400 | m = gfc_match_array_spec (&as, true, true); |
eae6c6c1 | 2401 | if (m == MATCH_ERROR) |
4ee9c684 | 2402 | goto cleanup; |
3b6a4b41 | 2403 | |
4ee9c684 | 2404 | if (m == MATCH_NO) |
2405 | as = gfc_copy_array_spec (current_as); | |
9b58b4c7 | 2406 | else if (current_as |
60e19868 | 2407 | && !merge_array_spec (current_as, as, true)) |
9b58b4c7 | 2408 | { |
2409 | m = MATCH_ERROR; | |
2410 | goto cleanup; | |
2411 | } | |
4ee9c684 | 2412 | |
829d7a08 | 2413 | if (flag_cray_pointer) |
eae6c6c1 | 2414 | cp_as = gfc_copy_array_spec (as); |
2415 | ||
ae2864a8 | 2416 | /* At this point, we know for sure if the symbol is PARAMETER and can thus |
2417 | determine (and check) whether it can be implied-shape. If it | |
2418 | was parsed as assumed-size, change it because PARAMETERs can not | |
fc386590 | 2419 | be assumed-size. |
2420 | ||
2421 | An explicit-shape-array cannot appear under several conditions. | |
2422 | That check is done here as well. */ | |
ae2864a8 | 2423 | if (as) |
2424 | { | |
2425 | if (as->type == AS_IMPLIED_SHAPE && current_attr.flavor != FL_PARAMETER) | |
2426 | { | |
2427 | m = MATCH_ERROR; | |
716da296 | 2428 | gfc_error ("Non-PARAMETER symbol %qs at %L can't be implied-shape", |
ae2864a8 | 2429 | name, &var_locus); |
2430 | goto cleanup; | |
2431 | } | |
2432 | ||
2433 | if (as->type == AS_ASSUMED_SIZE && as->rank == 1 | |
2434 | && current_attr.flavor == FL_PARAMETER) | |
2435 | as->type = AS_IMPLIED_SHAPE; | |
2436 | ||
2437 | if (as->type == AS_IMPLIED_SHAPE | |
76e207a9 | 2438 | && !gfc_notify_std (GFC_STD_F2008, "Implied-shape array at %L", |
60e19868 | 2439 | &var_locus)) |
ae2864a8 | 2440 | { |
2441 | m = MATCH_ERROR; | |
2442 | goto cleanup; | |
2443 | } | |
fc386590 | 2444 | |
2445 | /* F2018:C830 (R816) An explicit-shape-spec whose bounds are not | |
2446 | constant expressions shall appear only in a subprogram, derived | |
2447 | type definition, BLOCK construct, or interface body. */ | |
2448 | if (as->type == AS_EXPLICIT | |
2449 | && gfc_current_state () != COMP_BLOCK | |
2450 | && gfc_current_state () != COMP_DERIVED | |
2451 | && gfc_current_state () != COMP_FUNCTION | |
2452 | && gfc_current_state () != COMP_INTERFACE | |
2453 | && gfc_current_state () != COMP_SUBROUTINE) | |
2454 | { | |
2455 | gfc_expr *e; | |
2456 | bool not_constant = false; | |
2457 | ||
2458 | for (int i = 0; i < as->rank; i++) | |
2459 | { | |
2460 | e = gfc_copy_expr (as->lower[i]); | |
2461 | gfc_resolve_expr (e); | |
2462 | gfc_simplify_expr (e, 0); | |
2463 | if (e && (e->expr_type != EXPR_CONSTANT)) | |
2464 | { | |
2465 | not_constant = true; | |
2466 | break; | |
2467 | } | |
2468 | gfc_free_expr (e); | |
2469 | ||
2470 | e = gfc_copy_expr (as->upper[i]); | |
2471 | gfc_resolve_expr (e); | |
2472 | gfc_simplify_expr (e, 0); | |
2473 | if (e && (e->expr_type != EXPR_CONSTANT)) | |
2474 | { | |
2475 | not_constant = true; | |
2476 | break; | |
2477 | } | |
2478 | gfc_free_expr (e); | |
2479 | } | |
2480 | ||
2481 | if (not_constant) | |
4bd908ff | 2482 | { |
fc386590 | 2483 | gfc_error ("Explicit shaped array with nonconstant bounds at %C"); |
2484 | m = MATCH_ERROR; | |
2485 | goto cleanup; | |
2486 | } | |
2487 | } | |
09ebadea | 2488 | if (as->type == AS_EXPLICIT) |
2489 | { | |
2490 | for (int i = 0; i < as->rank; i++) | |
2491 | { | |
2492 | gfc_expr *e, *n; | |
2493 | e = as->lower[i]; | |
2494 | if (e->expr_type != EXPR_CONSTANT) | |
2495 | { | |
2496 | n = gfc_copy_expr (e); | |
2497 | gfc_simplify_expr (n, 1); | |
2498 | if (n->expr_type == EXPR_CONSTANT) | |
2499 | gfc_replace_expr (e, n); | |
2500 | else | |
2501 | gfc_free_expr (n); | |
2502 | } | |
2503 | e = as->upper[i]; | |
2504 | if (e->expr_type != EXPR_CONSTANT) | |
2505 | { | |
2506 | n = gfc_copy_expr (e); | |
2507 | gfc_simplify_expr (n, 1); | |
2508 | if (n->expr_type == EXPR_CONSTANT) | |
2509 | gfc_replace_expr (e, n); | |
2510 | else | |
2511 | gfc_free_expr (n); | |
2512 | } | |
2513 | } | |
2514 | } | |
ae2864a8 | 2515 | } |
2516 | ||
4ee9c684 | 2517 | char_len = NULL; |
2518 | cl = NULL; | |
3e715c81 | 2519 | cl_deferred = false; |
4ee9c684 | 2520 | |
2521 | if (current_ts.type == BT_CHARACTER) | |
2522 | { | |
926b8757 | 2523 | switch (match_char_length (&char_len, &cl_deferred, false)) |
4ee9c684 | 2524 | { |
2525 | case MATCH_YES: | |
d270ce52 | 2526 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
4ee9c684 | 2527 | |
2528 | cl->length = char_len; | |
2529 | break; | |
2530 | ||
3923b69f | 2531 | /* Non-constant lengths need to be copied after the first |
04b61f60 | 2532 | element. Also copy assumed lengths. */ |
4ee9c684 | 2533 | case MATCH_NO: |
04b61f60 | 2534 | if (elem > 1 |
eeebe20b | 2535 | && (current_ts.u.cl->length == NULL |
2536 | || current_ts.u.cl->length->expr_type != EXPR_CONSTANT)) | |
3923b69f | 2537 | { |
d270ce52 | 2538 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
eeebe20b | 2539 | cl->length = gfc_copy_expr (current_ts.u.cl->length); |
3923b69f | 2540 | } |
2541 | else | |
eeebe20b | 2542 | cl = current_ts.u.cl; |
3923b69f | 2543 | |
3e715c81 | 2544 | cl_deferred = current_ts.deferred; |
2545 | ||
4ee9c684 | 2546 | break; |
2547 | ||
2548 | case MATCH_ERROR: | |
2549 | goto cleanup; | |
2550 | } | |
2551 | } | |
2552 | ||
4b8eb6ca | 2553 | /* The dummy arguments and result of the abreviated form of MODULE |
2554 | PROCEDUREs, used in SUBMODULES should not be redefined. */ | |
2555 | if (gfc_current_ns->proc_name | |
2556 | && gfc_current_ns->proc_name->abr_modproc_decl) | |
2557 | { | |
2558 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2559 | if (sym != NULL && (sym->attr.dummy || sym->attr.result)) | |
2560 | { | |
2561 | m = MATCH_ERROR; | |
2f7de6c1 | 2562 | gfc_error ("%qs at %C is a redefinition of the declaration " |
4b8eb6ca | 2563 | "in the corresponding interface for MODULE " |
2f7de6c1 | 2564 | "PROCEDURE %qs", sym->name, |
4b8eb6ca | 2565 | gfc_current_ns->proc_name->name); |
2566 | goto cleanup; | |
2567 | } | |
2568 | } | |
2569 | ||
8ef2cf76 | 2570 | /* %FILL components may not have initializers. */ |
ea9e8242 | 2571 | if (gfc_str_startswith (name, "%FILL") && gfc_match_eos () != MATCH_YES) |
8ef2cf76 | 2572 | { |
2573 | gfc_error ("%qs entity cannot have an initializer at %C", "%FILL"); | |
2574 | m = MATCH_ERROR; | |
2575 | goto cleanup; | |
2576 | } | |
2577 | ||
b549d2a5 | 2578 | /* If this symbol has already shown up in a Cray Pointer declaration, |
322680b5 | 2579 | and this is not a component declaration, |
f6d0e37a | 2580 | then we want to set the type & bail out. */ |
d7cd448a | 2581 | if (flag_cray_pointer && !gfc_comp_struct (gfc_current_state ())) |
b549d2a5 | 2582 | { |
2583 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2584 | if (sym != NULL && sym->attr.cray_pointee) | |
2585 | { | |
b549d2a5 | 2586 | m = MATCH_YES; |
4bd908ff | 2587 | if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
2588 | { | |
2589 | m = MATCH_ERROR; | |
2590 | goto cleanup; | |
2591 | } | |
8db94b3b | 2592 | |
b549d2a5 | 2593 | /* Check to see if we have an array specification. */ |
2594 | if (cp_as != NULL) | |
2595 | { | |
2596 | if (sym->as != NULL) | |
2597 | { | |
7698a624 | 2598 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
b549d2a5 | 2599 | gfc_free_array_spec (cp_as); |
2600 | m = MATCH_ERROR; | |
2601 | goto cleanup; | |
2602 | } | |
2603 | else | |
2604 | { | |
60e19868 | 2605 | if (!gfc_set_array_spec (sym, cp_as, &var_locus)) |
b549d2a5 | 2606 | gfc_internal_error ("Couldn't set pointee array spec."); |
e14bee04 | 2607 | |
b549d2a5 | 2608 | /* Fix the array spec. */ |
e14bee04 | 2609 | m = gfc_mod_pointee_as (sym->as); |
b549d2a5 | 2610 | if (m == MATCH_ERROR) |
2611 | goto cleanup; | |
2612 | } | |
e14bee04 | 2613 | } |
b549d2a5 | 2614 | goto cleanup; |
2615 | } | |
2616 | else | |
2617 | { | |
2618 | gfc_free_array_spec (cp_as); | |
2619 | } | |
2620 | } | |
e14bee04 | 2621 | |
1e057e9b | 2622 | /* Procedure pointer as function result. */ |
2623 | if (gfc_current_state () == COMP_FUNCTION | |
2624 | && strcmp ("ppr@", gfc_current_block ()->name) == 0 | |
2625 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) == 0) | |
2626 | strcpy (name, "ppr@"); | |
2627 | ||
2628 | if (gfc_current_state () == COMP_FUNCTION | |
2629 | && strcmp (name, gfc_current_block ()->name) == 0 | |
2630 | && gfc_current_block ()->result | |
2631 | && strcmp ("ppr@", gfc_current_block ()->result->name) == 0) | |
2632 | strcpy (name, "ppr@"); | |
e14bee04 | 2633 | |
4ee9c684 | 2634 | /* OK, we've successfully matched the declaration. Now put the |
2635 | symbol in the current namespace, because it might be used in the | |
fe06c0d5 | 2636 | optional initialization expression for this symbol, e.g. this is |
4ee9c684 | 2637 | perfectly legal: |
2638 | ||
2639 | integer, parameter :: i = huge(i) | |
2640 | ||
2641 | This is only true for parameters or variables of a basic type. | |
2642 | For components of derived types, it is not true, so we don't | |
2643 | create a symbol for those yet. If we fail to create the symbol, | |
2644 | bail out. */ | |
d7cd448a | 2645 | if (!gfc_comp_struct (gfc_current_state ()) |
60e19868 | 2646 | && !build_sym (name, cl, cl_deferred, &as, &var_locus)) |
4ee9c684 | 2647 | { |
b8a51d79 | 2648 | m = MATCH_ERROR; |
2649 | goto cleanup; | |
2650 | } | |
2651 | ||
60e19868 | 2652 | if (!check_function_name (name)) |
4ee9c684 | 2653 | { |
4ee9c684 | 2654 | m = MATCH_ERROR; |
2655 | goto cleanup; | |
2656 | } | |
2657 | ||
b4f45d02 | 2658 | /* We allow old-style initializations of the form |
2659 | integer i /2/, j(4) /3*3, 1/ | |
2660 | (if no colon has been seen). These are different from data | |
2661 | statements in that initializers are only allowed to apply to the | |
2662 | variable immediately preceding, i.e. | |
2663 | integer i, j /1, 2/ | |
2664 | is not allowed. Therefore we have to do some work manually, that | |
cca3db55 | 2665 | could otherwise be left to the matchers for DATA statements. */ |
b4f45d02 | 2666 | |
2667 | if (!colon_seen && gfc_match (" /") == MATCH_YES) | |
2668 | { | |
60e19868 | 2669 | if (!gfc_notify_std (GFC_STD_GNU, "Old-style " |
2670 | "initialization at %C")) | |
b4f45d02 | 2671 | return MATCH_ERROR; |
d7cd448a | 2672 | |
2673 | /* Allow old style initializations for components of STRUCTUREs and MAPs | |
2674 | but not components of derived types. */ | |
d57a1422 | 2675 | else if (gfc_current_state () == COMP_DERIVED) |
2676 | { | |
2677 | gfc_error ("Invalid old style initialization for derived type " | |
2678 | "component at %C"); | |
2679 | m = MATCH_ERROR; | |
2680 | goto cleanup; | |
2681 | } | |
8db94b3b | 2682 | |
d7cd448a | 2683 | /* For structure components, read the initializer as a special |
2684 | expression and let the rest of this function apply the initializer | |
2685 | as usual. */ | |
2686 | else if (gfc_comp_struct (gfc_current_state ())) | |
2687 | { | |
2688 | m = match_clist_expr (&initializer, ¤t_ts, as); | |
2689 | if (m == MATCH_NO) | |
2690 | gfc_error ("Syntax error in old style initialization of %s at %C", | |
2691 | name); | |
2692 | if (m != MATCH_YES) | |
2693 | goto cleanup; | |
2694 | } | |
2695 | ||
2696 | /* Otherwise we treat the old style initialization just like a | |
2697 | DATA declaration for the current variable. */ | |
2698 | else | |
2699 | return match_old_style_init (name); | |
b4f45d02 | 2700 | } |
2701 | ||
4ee9c684 | 2702 | /* The double colon must be present in order to have initializers. |
2703 | Otherwise the statement is ambiguous with an assignment statement. */ | |
2704 | if (colon_seen) | |
2705 | { | |
2706 | if (gfc_match (" =>") == MATCH_YES) | |
2707 | { | |
4ee9c684 | 2708 | if (!current_attr.pointer) |
2709 | { | |
2710 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
2711 | m = MATCH_ERROR; | |
2712 | goto cleanup; | |
2713 | } | |
2714 | ||
23d075f4 | 2715 | m = match_pointer_init (&initializer, 0); |
4ee9c684 | 2716 | if (m != MATCH_YES) |
2717 | goto cleanup; | |
4ee9c684 | 2718 | } |
2719 | else if (gfc_match_char ('=') == MATCH_YES) | |
2720 | { | |
2721 | if (current_attr.pointer) | |
2722 | { | |
0d2b3c9c | 2723 | gfc_error ("Pointer initialization at %C requires %<=>%>, " |
2724 | "not %<=%>"); | |
4ee9c684 | 2725 | m = MATCH_ERROR; |
2726 | goto cleanup; | |
2727 | } | |
2728 | ||
2729 | m = gfc_match_init_expr (&initializer); | |
2730 | if (m == MATCH_NO) | |
2731 | { | |
2732 | gfc_error ("Expected an initialization expression at %C"); | |
2733 | m = MATCH_ERROR; | |
2734 | } | |
2735 | ||
b3a420c5 | 2736 | if (current_attr.flavor != FL_PARAMETER && gfc_pure (NULL) |
d7cd448a | 2737 | && !gfc_comp_struct (gfc_state_stack->state)) |
4ee9c684 | 2738 | { |
1a9745d2 | 2739 | gfc_error ("Initialization of variable at %C is not allowed in " |
2740 | "a PURE procedure"); | |
4ee9c684 | 2741 | m = MATCH_ERROR; |
2742 | } | |
2743 | ||
c77badf3 | 2744 | if (current_attr.flavor != FL_PARAMETER |
d7cd448a | 2745 | && !gfc_comp_struct (gfc_state_stack->state)) |
c77badf3 | 2746 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
2747 | ||
4ee9c684 | 2748 | if (m != MATCH_YES) |
2749 | goto cleanup; | |
2750 | } | |
8ffad0f9 | 2751 | } |
2752 | ||
2294b616 | 2753 | if (initializer != NULL && current_attr.allocatable |
d7cd448a | 2754 | && gfc_comp_struct (gfc_current_state ())) |
2294b616 | 2755 | { |
1a9745d2 | 2756 | gfc_error ("Initialization of allocatable component at %C is not " |
2757 | "allowed"); | |
2294b616 | 2758 | m = MATCH_ERROR; |
2759 | goto cleanup; | |
2760 | } | |
2761 | ||
87a0366f | 2762 | if (gfc_current_state () == COMP_DERIVED |
2763 | && gfc_current_block ()->attr.pdt_template) | |
2764 | { | |
2765 | gfc_symbol *param; | |
2766 | gfc_find_symbol (name, gfc_current_block ()->f2k_derived, | |
2767 | 0, ¶m); | |
2768 | if (!param && (current_attr.pdt_kind || current_attr.pdt_len)) | |
2769 | { | |
2770 | gfc_error ("The component with KIND or LEN attribute at %C does not " | |
2771 | "not appear in the type parameter list at %L", | |
2772 | &gfc_current_block ()->declared_at); | |
2773 | m = MATCH_ERROR; | |
2774 | goto cleanup; | |
2775 | } | |
2776 | else if (param && !(current_attr.pdt_kind || current_attr.pdt_len)) | |
2777 | { | |
2778 | gfc_error ("The component at %C that appears in the type parameter " | |
2779 | "list at %L has neither the KIND nor LEN attribute", | |
2780 | &gfc_current_block ()->declared_at); | |
2781 | m = MATCH_ERROR; | |
2782 | goto cleanup; | |
2783 | } | |
2784 | else if (as && (current_attr.pdt_kind || current_attr.pdt_len)) | |
2785 | { | |
2786 | gfc_error ("The component at %C which is a type parameter must be " | |
2787 | "a scalar"); | |
2788 | m = MATCH_ERROR; | |
2789 | goto cleanup; | |
2790 | } | |
2791 | else if (param && initializer) | |
2792 | param->value = gfc_copy_expr (initializer); | |
2793 | } | |
2794 | ||
2c4e6da2 | 2795 | /* Before adding a possible initilizer, do a simple check for compatibility |
9737f088 | 2796 | of lhs and rhs types. Assigning a REAL value to a derived type is not a |
2c4e6da2 | 2797 | good thing. */ |
2798 | if (current_ts.type == BT_DERIVED && initializer | |
2799 | && (gfc_numeric_ts (&initializer->ts) | |
2800 | || initializer->ts.type == BT_LOGICAL | |
2801 | || initializer->ts.type == BT_CHARACTER)) | |
2802 | { | |
9737f088 | 2803 | gfc_error ("Incompatible initialization between a derived type " |
2c4e6da2 | 2804 | "entity and an entity with %qs type at %C", |
2805 | gfc_typename (&initializer->ts)); | |
2806 | m = MATCH_ERROR; | |
2807 | goto cleanup; | |
2808 | } | |
2809 | ||
2810 | ||
d9b3f26b | 2811 | /* Add the initializer. Note that it is fine if initializer is |
4ee9c684 | 2812 | NULL here, because we sometimes also need to check if a |
2813 | declaration *must* have an initialization expression. */ | |
d7cd448a | 2814 | if (!gfc_comp_struct (gfc_current_state ())) |
4ee9c684 | 2815 | t = add_init_expr_to_sym (name, &initializer, &var_locus); |
2816 | else | |
d9b3f26b | 2817 | { |
2294b616 | 2818 | if (current_ts.type == BT_DERIVED |
1a9745d2 | 2819 | && !current_attr.pointer && !initializer) |
d9b3f26b | 2820 | initializer = gfc_default_initializer (¤t_ts); |
2821 | t = build_struct (name, cl, &initializer, &as); | |
d7cd448a | 2822 | |
2823 | /* If we match a nested structure definition we expect to see the | |
2824 | * body even if the variable declarations blow up, so we need to keep | |
2825 | * the structure declaration around. */ | |
2826 | if (gfc_new_block && gfc_new_block->attr.flavor == FL_STRUCT) | |
2827 | gfc_commit_symbol (gfc_new_block); | |
d9b3f26b | 2828 | } |
4ee9c684 | 2829 | |
60e19868 | 2830 | m = (t) ? MATCH_YES : MATCH_ERROR; |
4ee9c684 | 2831 | |
2832 | cleanup: | |
2833 | /* Free stuff up and return. */ | |
2834 | gfc_free_expr (initializer); | |
2835 | gfc_free_array_spec (as); | |
2836 | ||
2837 | return m; | |
2838 | } | |
2839 | ||
2840 | ||
d10f89ee | 2841 | /* Match an extended-f77 "TYPESPEC*bytesize"-style kind specification. |
2842 | This assumes that the byte size is equal to the kind number for | |
2843 | non-COMPLEX types, and equal to twice the kind number for COMPLEX. */ | |
4ee9c684 | 2844 | |
2845 | match | |
1a9745d2 | 2846 | gfc_match_old_kind_spec (gfc_typespec *ts) |
4ee9c684 | 2847 | { |
2848 | match m; | |
3bd3b616 | 2849 | int original_kind; |
4ee9c684 | 2850 | |
2851 | if (gfc_match_char ('*') != MATCH_YES) | |
2852 | return MATCH_NO; | |
2853 | ||
3bd3b616 | 2854 | m = gfc_match_small_literal_int (&ts->kind, NULL); |
4ee9c684 | 2855 | if (m != MATCH_YES) |
2856 | return MATCH_ERROR; | |
2857 | ||
b118a35b | 2858 | original_kind = ts->kind; |
2859 | ||
4ee9c684 | 2860 | /* Massage the kind numbers for complex types. */ |
b118a35b | 2861 | if (ts->type == BT_COMPLEX) |
2862 | { | |
2863 | if (ts->kind % 2) | |
1a9745d2 | 2864 | { |
2865 | gfc_error ("Old-style type declaration %s*%d not supported at %C", | |
2866 | gfc_basic_typename (ts->type), original_kind); | |
2867 | return MATCH_ERROR; | |
2868 | } | |
b118a35b | 2869 | ts->kind /= 2; |
2d76519f | 2870 | |
2871 | } | |
2872 | ||
eb106faf | 2873 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
2d76519f | 2874 | ts->kind = 8; |
2875 | ||
2876 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2877 | { | |
2878 | if (ts->kind == 4) | |
2879 | { | |
eb106faf | 2880 | if (flag_real4_kind == 8) |
2d76519f | 2881 | ts->kind = 8; |
eb106faf | 2882 | if (flag_real4_kind == 10) |
2d76519f | 2883 | ts->kind = 10; |
eb106faf | 2884 | if (flag_real4_kind == 16) |
2d76519f | 2885 | ts->kind = 16; |
2886 | } | |
2887 | ||
2888 | if (ts->kind == 8) | |
2889 | { | |
eb106faf | 2890 | if (flag_real8_kind == 4) |
2d76519f | 2891 | ts->kind = 4; |
eb106faf | 2892 | if (flag_real8_kind == 10) |
2d76519f | 2893 | ts->kind = 10; |
eb106faf | 2894 | if (flag_real8_kind == 16) |
2d76519f | 2895 | ts->kind = 16; |
2896 | } | |
b118a35b | 2897 | } |
4ee9c684 | 2898 | |
f2d4ef3b | 2899 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
4ee9c684 | 2900 | { |
b118a35b | 2901 | gfc_error ("Old-style type declaration %s*%d not supported at %C", |
1a9745d2 | 2902 | gfc_basic_typename (ts->type), original_kind); |
4ee9c684 | 2903 | return MATCH_ERROR; |
2904 | } | |
2905 | ||
76e207a9 | 2906 | if (!gfc_notify_std (GFC_STD_GNU, |
2907 | "Nonstandard type declaration %s*%d at %C", | |
60e19868 | 2908 | gfc_basic_typename(ts->type), original_kind)) |
be7f01a1 | 2909 | return MATCH_ERROR; |
2910 | ||
4ee9c684 | 2911 | return MATCH_YES; |
2912 | } | |
2913 | ||
2914 | ||
2915 | /* Match a kind specification. Since kinds are generally optional, we | |
2916 | usually return MATCH_NO if something goes wrong. If a "kind=" | |
2917 | string is found, then we know we have an error. */ | |
2918 | ||
2919 | match | |
67a51c8e | 2920 | gfc_match_kind_spec (gfc_typespec *ts, bool kind_expr_only) |
4ee9c684 | 2921 | { |
67a51c8e | 2922 | locus where, loc; |
4ee9c684 | 2923 | gfc_expr *e; |
2924 | match m, n; | |
c632ff3d | 2925 | char c; |
4ee9c684 | 2926 | |
2927 | m = MATCH_NO; | |
67a51c8e | 2928 | n = MATCH_YES; |
4ee9c684 | 2929 | e = NULL; |
9d958d5b | 2930 | saved_kind_expr = NULL; |
4ee9c684 | 2931 | |
67a51c8e | 2932 | where = loc = gfc_current_locus; |
2933 | ||
2934 | if (kind_expr_only) | |
2935 | goto kind_expr; | |
4ee9c684 | 2936 | |
2937 | if (gfc_match_char ('(') == MATCH_NO) | |
2938 | return MATCH_NO; | |
2939 | ||
2940 | /* Also gobbles optional text. */ | |
2941 | if (gfc_match (" kind = ") == MATCH_YES) | |
2942 | m = MATCH_ERROR; | |
2943 | ||
67a51c8e | 2944 | loc = gfc_current_locus; |
2945 | ||
2946 | kind_expr: | |
9d958d5b | 2947 | |
4ee9c684 | 2948 | n = gfc_match_init_expr (&e); |
67a51c8e | 2949 | |
9d958d5b | 2950 | if (gfc_derived_parameter_expr (e)) |
2951 | { | |
2952 | ts->kind = 0; | |
2953 | saved_kind_expr = gfc_copy_expr (e); | |
2954 | goto close_brackets; | |
2955 | } | |
2956 | ||
4ee9c684 | 2957 | if (n != MATCH_YES) |
67a51c8e | 2958 | { |
077932f9 | 2959 | if (gfc_matching_function) |
67a51c8e | 2960 | { |
8db94b3b | 2961 | /* The function kind expression might include use associated or |
077932f9 | 2962 | imported parameters and try again after the specification |
2963 | expressions..... */ | |
67a51c8e | 2964 | if (gfc_match_char (')') != MATCH_YES) |
2965 | { | |
2966 | gfc_error ("Missing right parenthesis at %C"); | |
2967 | m = MATCH_ERROR; | |
2968 | goto no_match; | |
2969 | } | |
2970 | ||
2971 | gfc_free_expr (e); | |
67a51c8e | 2972 | gfc_undo_symbols (); |
2973 | return MATCH_YES; | |
2974 | } | |
2975 | else | |
2976 | { | |
2977 | /* ....or else, the match is real. */ | |
2978 | if (n == MATCH_NO) | |
2979 | gfc_error ("Expected initialization expression at %C"); | |
2980 | if (n != MATCH_YES) | |
2981 | return MATCH_ERROR; | |
2982 | } | |
2983 | } | |
4ee9c684 | 2984 | |
2985 | if (e->rank != 0) | |
2986 | { | |
2987 | gfc_error ("Expected scalar initialization expression at %C"); | |
2988 | m = MATCH_ERROR; | |
2989 | goto no_match; | |
2990 | } | |
2991 | ||
dc326dc0 | 2992 | if (gfc_extract_int (e, &ts->kind, 1)) |
4ee9c684 | 2993 | { |
4ee9c684 | 2994 | m = MATCH_ERROR; |
2995 | goto no_match; | |
2996 | } | |
2997 | ||
c5d33754 | 2998 | /* Before throwing away the expression, let's see if we had a |
2999 | C interoperable kind (and store the fact). */ | |
3000 | if (e->ts.is_c_interop == 1) | |
3001 | { | |
df084314 | 3002 | /* Mark this as C interoperable if being declared with one |
c5d33754 | 3003 | of the named constants from iso_c_binding. */ |
3004 | ts->is_c_interop = e->ts.is_iso_c; | |
3005 | ts->f90_type = e->ts.f90_type; | |
41084313 | 3006 | if (e->symtree) |
3007 | ts->interop_kind = e->symtree->n.sym; | |
c5d33754 | 3008 | } |
8db94b3b | 3009 | |
4ee9c684 | 3010 | gfc_free_expr (e); |
3011 | e = NULL; | |
3012 | ||
c5d33754 | 3013 | /* Ignore errors to this point, if we've gotten here. This means |
3014 | we ignore the m=MATCH_ERROR from above. */ | |
f2d4ef3b | 3015 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
4ee9c684 | 3016 | { |
3017 | gfc_error ("Kind %d not supported for type %s at %C", ts->kind, | |
3018 | gfc_basic_typename (ts->type)); | |
c632ff3d | 3019 | gfc_current_locus = where; |
3020 | return MATCH_ERROR; | |
4ee9c684 | 3021 | } |
c632ff3d | 3022 | |
209d3778 | 3023 | /* Warn if, e.g., c_int is used for a REAL variable, but not |
3024 | if, e.g., c_double is used for COMPLEX as the standard | |
3025 | explicitly says that the kind type parameter for complex and real | |
3026 | variable is the same, i.e. c_float == c_float_complex. */ | |
3027 | if (ts->f90_type != BT_UNKNOWN && ts->f90_type != ts->type | |
3028 | && !((ts->f90_type == BT_REAL && ts->type == BT_COMPLEX) | |
3029 | || (ts->f90_type == BT_COMPLEX && ts->type == BT_REAL))) | |
6f521718 | 3030 | gfc_warning_now (0, "C kind type parameter is for type %s but type at %L " |
ded233a6 | 3031 | "is %s", gfc_basic_typename (ts->f90_type), &where, |
3032 | gfc_basic_typename (ts->type)); | |
209d3778 | 3033 | |
9d958d5b | 3034 | close_brackets: |
3035 | ||
c632ff3d | 3036 | gfc_gobble_whitespace (); |
e0be6f02 | 3037 | if ((c = gfc_next_ascii_char ()) != ')' |
3038 | && (ts->type != BT_CHARACTER || c != ',')) | |
4ee9c684 | 3039 | { |
c632ff3d | 3040 | if (ts->type == BT_CHARACTER) |
3041 | gfc_error ("Missing right parenthesis or comma at %C"); | |
3042 | else | |
3043 | gfc_error ("Missing right parenthesis at %C"); | |
67a51c8e | 3044 | m = MATCH_ERROR; |
4ee9c684 | 3045 | } |
c5d33754 | 3046 | else |
3047 | /* All tests passed. */ | |
3048 | m = MATCH_YES; | |
4ee9c684 | 3049 | |
c5d33754 | 3050 | if(m == MATCH_ERROR) |
3051 | gfc_current_locus = where; | |
2d76519f | 3052 | |
eb106faf | 3053 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
2d76519f | 3054 | ts->kind = 8; |
3055 | ||
3056 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
3057 | { | |
3058 | if (ts->kind == 4) | |
3059 | { | |
eb106faf | 3060 | if (flag_real4_kind == 8) |
2d76519f | 3061 | ts->kind = 8; |
eb106faf | 3062 | if (flag_real4_kind == 10) |
2d76519f | 3063 | ts->kind = 10; |
eb106faf | 3064 | if (flag_real4_kind == 16) |
2d76519f | 3065 | ts->kind = 16; |
3066 | } | |
3067 | ||
3068 | if (ts->kind == 8) | |
3069 | { | |
eb106faf | 3070 | if (flag_real8_kind == 4) |
2d76519f | 3071 | ts->kind = 4; |
eb106faf | 3072 | if (flag_real8_kind == 10) |
2d76519f | 3073 | ts->kind = 10; |
eb106faf | 3074 | if (flag_real8_kind == 16) |
2d76519f | 3075 | ts->kind = 16; |
3076 | } | |
3077 | } | |
3078 | ||
c5d33754 | 3079 | /* Return what we know from the test(s). */ |
3080 | return m; | |
4ee9c684 | 3081 | |
3082 | no_match: | |
3083 | gfc_free_expr (e); | |
cbb9e6aa | 3084 | gfc_current_locus = where; |
4ee9c684 | 3085 | return m; |
3086 | } | |
3087 | ||
3088 | ||
33399208 | 3089 | static match |
3090 | match_char_kind (int * kind, int * is_iso_c) | |
3091 | { | |
3092 | locus where; | |
3093 | gfc_expr *e; | |
3094 | match m, n; | |
dc326dc0 | 3095 | bool fail; |
33399208 | 3096 | |
3097 | m = MATCH_NO; | |
3098 | e = NULL; | |
3099 | where = gfc_current_locus; | |
3100 | ||
3101 | n = gfc_match_init_expr (&e); | |
c632ff3d | 3102 | |
077932f9 | 3103 | if (n != MATCH_YES && gfc_matching_function) |
c632ff3d | 3104 | { |
077932f9 | 3105 | /* The expression might include use-associated or imported |
8db94b3b | 3106 | parameters and try again after the specification |
077932f9 | 3107 | expressions. */ |
c632ff3d | 3108 | gfc_free_expr (e); |
c632ff3d | 3109 | gfc_undo_symbols (); |
3110 | return MATCH_YES; | |
3111 | } | |
3112 | ||
33399208 | 3113 | if (n == MATCH_NO) |
3114 | gfc_error ("Expected initialization expression at %C"); | |
3115 | if (n != MATCH_YES) | |
3116 | return MATCH_ERROR; | |
3117 | ||
3118 | if (e->rank != 0) | |
3119 | { | |
3120 | gfc_error ("Expected scalar initialization expression at %C"); | |
3121 | m = MATCH_ERROR; | |
3122 | goto no_match; | |
3123 | } | |
3124 | ||
9f96fdfe | 3125 | if (gfc_derived_parameter_expr (e)) |
3126 | { | |
3127 | saved_kind_expr = e; | |
3128 | *kind = 0; | |
3129 | return MATCH_YES; | |
3130 | } | |
3131 | ||
dc326dc0 | 3132 | fail = gfc_extract_int (e, kind, 1); |
33399208 | 3133 | *is_iso_c = e->ts.is_iso_c; |
dc326dc0 | 3134 | if (fail) |
33399208 | 3135 | { |
33399208 | 3136 | m = MATCH_ERROR; |
3137 | goto no_match; | |
3138 | } | |
3139 | ||
3140 | gfc_free_expr (e); | |
3141 | ||
3142 | /* Ignore errors to this point, if we've gotten here. This means | |
3143 | we ignore the m=MATCH_ERROR from above. */ | |
3144 | if (gfc_validate_kind (BT_CHARACTER, *kind, true) < 0) | |
3145 | { | |
3146 | gfc_error ("Kind %d is not supported for CHARACTER at %C", *kind); | |
3147 | m = MATCH_ERROR; | |
3148 | } | |
3149 | else | |
3150 | /* All tests passed. */ | |
3151 | m = MATCH_YES; | |
3152 | ||
3153 | if (m == MATCH_ERROR) | |
3154 | gfc_current_locus = where; | |
8db94b3b | 3155 | |
33399208 | 3156 | /* Return what we know from the test(s). */ |
3157 | return m; | |
3158 | ||
3159 | no_match: | |
3160 | gfc_free_expr (e); | |
3161 | gfc_current_locus = where; | |
3162 | return m; | |
3163 | } | |
3164 | ||
10f5dcc0 | 3165 | |
4ee9c684 | 3166 | /* Match the various kind/length specifications in a CHARACTER |
3167 | declaration. We don't return MATCH_NO. */ | |
3168 | ||
10f5dcc0 | 3169 | match |
3170 | gfc_match_char_spec (gfc_typespec *ts) | |
4ee9c684 | 3171 | { |
33399208 | 3172 | int kind, seen_length, is_iso_c; |
4ee9c684 | 3173 | gfc_charlen *cl; |
3174 | gfc_expr *len; | |
3175 | match m; | |
3e715c81 | 3176 | bool deferred; |
33399208 | 3177 | |
4ee9c684 | 3178 | len = NULL; |
3179 | seen_length = 0; | |
33399208 | 3180 | kind = 0; |
3181 | is_iso_c = 0; | |
3e715c81 | 3182 | deferred = false; |
4ee9c684 | 3183 | |
3184 | /* Try the old-style specification first. */ | |
3185 | old_char_selector = 0; | |
3186 | ||
926b8757 | 3187 | m = match_char_length (&len, &deferred, true); |
4ee9c684 | 3188 | if (m != MATCH_NO) |
3189 | { | |
3190 | if (m == MATCH_YES) | |
3191 | old_char_selector = 1; | |
3192 | seen_length = 1; | |
3193 | goto done; | |
3194 | } | |
3195 | ||
3196 | m = gfc_match_char ('('); | |
3197 | if (m != MATCH_YES) | |
3198 | { | |
c5d33754 | 3199 | m = MATCH_YES; /* Character without length is a single char. */ |
4ee9c684 | 3200 | goto done; |
3201 | } | |
3202 | ||
c5d33754 | 3203 | /* Try the weird case: ( KIND = <int> [ , LEN = <len-param> ] ). */ |
4ee9c684 | 3204 | if (gfc_match (" kind =") == MATCH_YES) |
3205 | { | |
33399208 | 3206 | m = match_char_kind (&kind, &is_iso_c); |
8db94b3b | 3207 | |
4ee9c684 | 3208 | if (m == MATCH_ERROR) |
3209 | goto done; | |
3210 | if (m == MATCH_NO) | |
3211 | goto syntax; | |
3212 | ||
3213 | if (gfc_match (" , len =") == MATCH_NO) | |
3214 | goto rparen; | |
3215 | ||
3e715c81 | 3216 | m = char_len_param_value (&len, &deferred); |
4ee9c684 | 3217 | if (m == MATCH_NO) |
3218 | goto syntax; | |
3219 | if (m == MATCH_ERROR) | |
3220 | goto done; | |
3221 | seen_length = 1; | |
3222 | ||
3223 | goto rparen; | |
3224 | } | |
3225 | ||
f6d0e37a | 3226 | /* Try to match "LEN = <len-param>" or "LEN = <len-param>, KIND = <int>". */ |
4ee9c684 | 3227 | if (gfc_match (" len =") == MATCH_YES) |
3228 | { | |
3e715c81 | 3229 | m = char_len_param_value (&len, &deferred); |
4ee9c684 | 3230 | if (m == MATCH_NO) |
3231 | goto syntax; | |
3232 | if (m == MATCH_ERROR) | |
3233 | goto done; | |
3234 | seen_length = 1; | |
3235 | ||
3236 | if (gfc_match_char (')') == MATCH_YES) | |
3237 | goto done; | |
3238 | ||
3239 | if (gfc_match (" , kind =") != MATCH_YES) | |
3240 | goto syntax; | |
3241 | ||
33399208 | 3242 | if (match_char_kind (&kind, &is_iso_c) == MATCH_ERROR) |
3243 | goto done; | |
4ee9c684 | 3244 | |
3245 | goto rparen; | |
3246 | } | |
3247 | ||
f6d0e37a | 3248 | /* Try to match ( <len-param> ) or ( <len-param> , [ KIND = ] <int> ). */ |
3e715c81 | 3249 | m = char_len_param_value (&len, &deferred); |
4ee9c684 | 3250 | if (m == MATCH_NO) |
3251 | goto syntax; | |
3252 | if (m == MATCH_ERROR) | |
3253 | goto done; | |
3254 | seen_length = 1; | |
3255 | ||
3256 | m = gfc_match_char (')'); | |
3257 | if (m == MATCH_YES) | |
3258 | goto done; | |
3259 | ||
3260 | if (gfc_match_char (',') != MATCH_YES) | |
3261 | goto syntax; | |
3262 | ||
c5d33754 | 3263 | gfc_match (" kind ="); /* Gobble optional text. */ |
4ee9c684 | 3264 | |
33399208 | 3265 | m = match_char_kind (&kind, &is_iso_c); |
4ee9c684 | 3266 | if (m == MATCH_ERROR) |
3267 | goto done; | |
3268 | if (m == MATCH_NO) | |
3269 | goto syntax; | |
3270 | ||
3271 | rparen: | |
3272 | /* Require a right-paren at this point. */ | |
3273 | m = gfc_match_char (')'); | |
3274 | if (m == MATCH_YES) | |
3275 | goto done; | |
3276 | ||
3277 | syntax: | |
3278 | gfc_error ("Syntax error in CHARACTER declaration at %C"); | |
3279 | m = MATCH_ERROR; | |
a3cbe8cc | 3280 | gfc_free_expr (len); |
3281 | return m; | |
4ee9c684 | 3282 | |
3283 | done: | |
8d39570e | 3284 | /* Deal with character functions after USE and IMPORT statements. */ |
3285 | if (gfc_matching_function) | |
077932f9 | 3286 | { |
8d39570e | 3287 | gfc_free_expr (len); |
077932f9 | 3288 | gfc_undo_symbols (); |
3289 | return MATCH_YES; | |
3290 | } | |
3291 | ||
4ee9c684 | 3292 | if (m != MATCH_YES) |
3293 | { | |
3294 | gfc_free_expr (len); | |
3295 | return m; | |
3296 | } | |
3297 | ||
3298 | /* Do some final massaging of the length values. */ | |
d270ce52 | 3299 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
4ee9c684 | 3300 | |
3301 | if (seen_length == 0) | |
9f4d9f83 | 3302 | cl->length = gfc_get_int_expr (gfc_charlen_int_kind, NULL, 1); |
4ee9c684 | 3303 | else |
91f09922 | 3304 | { |
5efb256e | 3305 | /* If gfortran ends up here, then len may be reducible to a constant. |
3306 | Try to do that here. If it does not reduce, simply assign len to | |
3307 | charlen. A complication occurs with user-defined generic functions, | |
3308 | which are not resolved. Use a private namespace to deal with | |
3309 | generic functions. */ | |
3310 | ||
91f09922 | 3311 | if (len && len->expr_type != EXPR_CONSTANT) |
3312 | { | |
5efb256e | 3313 | gfc_namespace *old_ns; |
91f09922 | 3314 | gfc_expr *e; |
5efb256e | 3315 | |
3316 | old_ns = gfc_current_ns; | |
3317 | gfc_current_ns = gfc_get_namespace (NULL, 0); | |
3318 | ||
91f09922 | 3319 | e = gfc_copy_expr (len); |
3320 | gfc_reduce_init_expr (e); | |
3321 | if (e->expr_type == EXPR_CONSTANT) | |
a3903232 | 3322 | { |
3323 | gfc_replace_expr (len, e); | |
3324 | if (mpz_cmp_si (len->value.integer, 0) < 0) | |
3325 | mpz_set_ui (len->value.integer, 0); | |
3326 | } | |
91f09922 | 3327 | else |
3328 | gfc_free_expr (e); | |
5efb256e | 3329 | |
3330 | gfc_free_namespace (gfc_current_ns); | |
3331 | gfc_current_ns = old_ns; | |
91f09922 | 3332 | } |
5efb256e | 3333 | |
3334 | cl->length = len; | |
91f09922 | 3335 | } |
4ee9c684 | 3336 | |
eeebe20b | 3337 | ts->u.cl = cl; |
33399208 | 3338 | ts->kind = kind == 0 ? gfc_default_character_kind : kind; |
3e715c81 | 3339 | ts->deferred = deferred; |
4ee9c684 | 3340 | |
df084314 | 3341 | /* We have to know if it was a C interoperable kind so we can |
c5d33754 | 3342 | do accurate type checking of bind(c) procs, etc. */ |
33399208 | 3343 | if (kind != 0) |
df084314 | 3344 | /* Mark this as C interoperable if being declared with one |
33399208 | 3345 | of the named constants from iso_c_binding. */ |
3346 | ts->is_c_interop = is_iso_c; | |
c5d33754 | 3347 | else if (len != NULL) |
33399208 | 3348 | /* Here, we might have parsed something such as: character(c_char) |
3349 | In this case, the parsing code above grabs the c_char when | |
3350 | looking for the length (line 1690, roughly). it's the last | |
3351 | testcase for parsing the kind params of a character variable. | |
3352 | However, it's not actually the length. this seems like it | |
8db94b3b | 3353 | could be an error. |
33399208 | 3354 | To see if the user used a C interop kind, test the expr |
3355 | of the so called length, and see if it's C interoperable. */ | |
3356 | ts->is_c_interop = len->ts.is_iso_c; | |
8db94b3b | 3357 | |
4ee9c684 | 3358 | return MATCH_YES; |
3359 | } | |
3360 | ||
3361 | ||
d7cd448a | 3362 | /* Matches a RECORD declaration. */ |
3363 | ||
3364 | static match | |
891196d7 | 3365 | match_record_decl (char *name) |
d7cd448a | 3366 | { |
3367 | locus old_loc; | |
3368 | old_loc = gfc_current_locus; | |
891196d7 | 3369 | match m; |
d7cd448a | 3370 | |
891196d7 | 3371 | m = gfc_match (" record /"); |
3372 | if (m == MATCH_YES) | |
d7cd448a | 3373 | { |
cf078427 | 3374 | if (!flag_dec_structure) |
d7cd448a | 3375 | { |
3376 | gfc_current_locus = old_loc; | |
3377 | gfc_error ("RECORD at %C is an extension, enable it with " | |
3378 | "-fdec-structure"); | |
3379 | return MATCH_ERROR; | |
3380 | } | |
891196d7 | 3381 | m = gfc_match (" %n/", name); |
3382 | if (m == MATCH_YES) | |
3383 | return MATCH_YES; | |
d7cd448a | 3384 | } |
3385 | ||
891196d7 | 3386 | gfc_current_locus = old_loc; |
cf078427 | 3387 | if (flag_dec_structure |
891196d7 | 3388 | && (gfc_match (" record% ") == MATCH_YES |
3389 | || gfc_match (" record%t") == MATCH_YES)) | |
3390 | gfc_error ("Structure name expected after RECORD at %C"); | |
3391 | if (m == MATCH_NO) | |
d7cd448a | 3392 | return MATCH_NO; |
891196d7 | 3393 | |
3394 | return MATCH_ERROR; | |
d7cd448a | 3395 | } |
3396 | ||
9d958d5b | 3397 | |
3398 | /* This function uses the gfc_actual_arglist 'type_param_spec_list' as a source | |
3399 | of expressions to substitute into the possibly parameterized expression | |
3400 | 'e'. Using a list is inefficient but should not be too bad since the | |
3401 | number of type parameters is not likely to be large. */ | |
3402 | static bool | |
3403 | insert_parameter_exprs (gfc_expr* e, gfc_symbol* sym ATTRIBUTE_UNUSED, | |
3404 | int* f) | |
3405 | { | |
3406 | gfc_actual_arglist *param; | |
3407 | gfc_expr *copy; | |
3408 | ||
3409 | if (e->expr_type != EXPR_VARIABLE) | |
3410 | return false; | |
3411 | ||
3412 | gcc_assert (e->symtree); | |
3413 | if (e->symtree->n.sym->attr.pdt_kind | |
3414 | || (*f != 0 && e->symtree->n.sym->attr.pdt_len)) | |
3415 | { | |
3416 | for (param = type_param_spec_list; param; param = param->next) | |
3417 | if (strcmp (e->symtree->n.sym->name, param->name) == 0) | |
3418 | break; | |
3419 | ||
3420 | if (param) | |
3421 | { | |
3422 | copy = gfc_copy_expr (param->expr); | |
3423 | *e = *copy; | |
3424 | free (copy); | |
3425 | } | |
3426 | } | |
3427 | ||
3428 | return false; | |
3429 | } | |
3430 | ||
3431 | ||
3432 | bool | |
3433 | gfc_insert_kind_parameter_exprs (gfc_expr *e) | |
3434 | { | |
3435 | return gfc_traverse_expr (e, NULL, &insert_parameter_exprs, 0); | |
3436 | } | |
3437 | ||
3438 | ||
3439 | bool | |
3440 | gfc_insert_parameter_exprs (gfc_expr *e, gfc_actual_arglist *param_list) | |
3441 | { | |
3442 | gfc_actual_arglist *old_param_spec_list = type_param_spec_list; | |
3443 | type_param_spec_list = param_list; | |
3444 | return gfc_traverse_expr (e, NULL, &insert_parameter_exprs, 1); | |
3445 | type_param_spec_list = NULL; | |
3446 | type_param_spec_list = old_param_spec_list; | |
3447 | } | |
3448 | ||
3449 | /* Determines the instance of a parameterized derived type to be used by | |
3450 | matching determining the values of the kind parameters and using them | |
3451 | in the name of the instance. If the instance exists, it is used, otherwise | |
3452 | a new derived type is created. */ | |
3453 | match | |
3454 | gfc_get_pdt_instance (gfc_actual_arglist *param_list, gfc_symbol **sym, | |
3455 | gfc_actual_arglist **ext_param_list) | |
3456 | { | |
3457 | /* The PDT template symbol. */ | |
3458 | gfc_symbol *pdt = *sym; | |
3459 | /* The symbol for the parameter in the template f2k_namespace. */ | |
3460 | gfc_symbol *param; | |
3461 | /* The hoped for instance of the PDT. */ | |
3462 | gfc_symbol *instance; | |
3463 | /* The list of parameters appearing in the PDT declaration. */ | |
3464 | gfc_formal_arglist *type_param_name_list; | |
3465 | /* Used to store the parameter specification list during recursive calls. */ | |
3466 | gfc_actual_arglist *old_param_spec_list; | |
3467 | /* Pointers to the parameter specification being used. */ | |
3468 | gfc_actual_arglist *actual_param; | |
3469 | gfc_actual_arglist *tail = NULL; | |
3470 | /* Used to build up the name of the PDT instance. The prefix uses 4 | |
3471 | characters and each KIND parameter 2 more. Allow 8 of the latter. */ | |
3472 | char name[GFC_MAX_SYMBOL_LEN + 21]; | |
3473 | ||
3474 | bool name_seen = (param_list == NULL); | |
3475 | bool assumed_seen = false; | |
3476 | bool deferred_seen = false; | |
3477 | bool spec_error = false; | |
3478 | int kind_value, i; | |
3479 | gfc_expr *kind_expr; | |
3480 | gfc_component *c1, *c2; | |
3481 | match m; | |
3482 | ||
3483 | type_param_spec_list = NULL; | |
3484 | ||
3485 | type_param_name_list = pdt->formal; | |
3486 | actual_param = param_list; | |
3487 | sprintf (name, "Pdt%s", pdt->name); | |
3488 | ||
3489 | /* Run through the parameter name list and pick up the actual | |
3490 | parameter values or use the default values in the PDT declaration. */ | |
3491 | for (; type_param_name_list; | |
3492 | type_param_name_list = type_param_name_list->next) | |
3493 | { | |
3494 | if (actual_param && actual_param->spec_type != SPEC_EXPLICIT) | |
3495 | { | |
3496 | if (actual_param->spec_type == SPEC_ASSUMED) | |
3497 | spec_error = deferred_seen; | |
3498 | else | |
3499 | spec_error = assumed_seen; | |
3500 | ||
3501 | if (spec_error) | |
3502 | { | |
3503 | gfc_error ("The type parameter spec list at %C cannot contain " | |
3504 | "both ASSUMED and DEFERRED parameters"); | |
87a0366f | 3505 | goto error_return; |
9d958d5b | 3506 | } |
3507 | } | |
3508 | ||
3509 | if (actual_param && actual_param->name) | |
3510 | name_seen = true; | |
3511 | param = type_param_name_list->sym; | |
3512 | ||
f0efd2e8 | 3513 | if (!param || !param->name) |
3514 | continue; | |
3515 | ||
87a0366f | 3516 | c1 = gfc_find_component (pdt, param->name, false, true, NULL); |
1148eb54 | 3517 | /* An error should already have been thrown in resolve.c |
3518 | (resolve_fl_derived0). */ | |
87a0366f | 3519 | if (!pdt->attr.use_assoc && !c1) |
1148eb54 | 3520 | goto error_return; |
87a0366f | 3521 | |
9d958d5b | 3522 | kind_expr = NULL; |
3523 | if (!name_seen) | |
3524 | { | |
87a0366f | 3525 | if (!actual_param && !(c1 && c1->initializer)) |
3526 | { | |
3527 | gfc_error ("The type parameter spec list at %C does not contain " | |
3528 | "enough parameter expressions"); | |
3529 | goto error_return; | |
3530 | } | |
3531 | else if (!actual_param && c1 && c1->initializer) | |
3532 | kind_expr = gfc_copy_expr (c1->initializer); | |
3533 | else if (actual_param && actual_param->spec_type == SPEC_EXPLICIT) | |
9d958d5b | 3534 | kind_expr = gfc_copy_expr (actual_param->expr); |
3535 | } | |
3536 | else | |
3537 | { | |
3538 | actual_param = param_list; | |
3539 | for (;actual_param; actual_param = actual_param->next) | |
3540 | if (actual_param->name | |
3541 | && strcmp (actual_param->name, param->name) == 0) | |
3542 | break; | |
3543 | if (actual_param && actual_param->spec_type == SPEC_EXPLICIT) | |
3544 | kind_expr = gfc_copy_expr (actual_param->expr); | |
3545 | else | |
3546 | { | |
dba5ed0d | 3547 | if (c1->initializer) |
3548 | kind_expr = gfc_copy_expr (c1->initializer); | |
9d958d5b | 3549 | else if (!(actual_param && param->attr.pdt_len)) |
3550 | { | |
4b8290f8 | 3551 | gfc_error ("The derived parameter %qs at %C does not " |
9d958d5b | 3552 | "have a default value", param->name); |
87a0366f | 3553 | goto error_return; |
9d958d5b | 3554 | } |
3555 | } | |
3556 | } | |
3557 | ||
3558 | /* Store the current parameter expressions in a temporary actual | |
3559 | arglist 'list' so that they can be substituted in the corresponding | |
3560 | expressions in the PDT instance. */ | |
3561 | if (type_param_spec_list == NULL) | |
3562 | { | |
3563 | type_param_spec_list = gfc_get_actual_arglist (); | |
3564 | tail = type_param_spec_list; | |
3565 | } | |
3566 | else | |
3567 | { | |
3568 | tail->next = gfc_get_actual_arglist (); | |
3569 | tail = tail->next; | |
3570 | } | |
3571 | tail->name = param->name; | |
3572 | ||
3573 | if (kind_expr) | |
3574 | { | |
9f96fdfe | 3575 | /* Try simplification even for LEN expressions. */ |
3576 | gfc_resolve_expr (kind_expr); | |
3577 | gfc_simplify_expr (kind_expr, 1); | |
87a0366f | 3578 | /* Variable expressions seem to default to BT_PROCEDURE. |
3579 | TODO find out why this is and fix it. */ | |
3580 | if (kind_expr->ts.type != BT_INTEGER | |
3581 | && kind_expr->ts.type != BT_PROCEDURE) | |
3582 | { | |
3583 | gfc_error ("The parameter expression at %C must be of " | |
3584 | "INTEGER type and not %s type", | |
3585 | gfc_basic_typename (kind_expr->ts.type)); | |
3586 | goto error_return; | |
3587 | } | |
3588 | ||
9d958d5b | 3589 | tail->expr = gfc_copy_expr (kind_expr); |
9d958d5b | 3590 | } |
3591 | ||
3592 | if (actual_param) | |
3593 | tail->spec_type = actual_param->spec_type; | |
3594 | ||
3595 | if (!param->attr.pdt_kind) | |
3596 | { | |
87a0366f | 3597 | if (!name_seen && actual_param) |
9d958d5b | 3598 | actual_param = actual_param->next; |
3599 | if (kind_expr) | |
3600 | { | |
3601 | gfc_free_expr (kind_expr); | |
3602 | kind_expr = NULL; | |
3603 | } | |
3604 | continue; | |
3605 | } | |
3606 | ||
3607 | if (actual_param | |
3608 | && (actual_param->spec_type == SPEC_ASSUMED | |
3609 | || actual_param->spec_type == SPEC_DEFERRED)) | |
3610 | { | |
4b8290f8 | 3611 | gfc_error ("The KIND parameter %qs at %C cannot either be " |
9d958d5b | 3612 | "ASSUMED or DEFERRED", param->name); |
87a0366f | 3613 | goto error_return; |
9d958d5b | 3614 | } |
3615 | ||
3616 | if (!kind_expr || !gfc_is_constant_expr (kind_expr)) | |
3617 | { | |
4b8290f8 | 3618 | gfc_error ("The value for the KIND parameter %qs at %C does not " |
9d958d5b | 3619 | "reduce to a constant expression", param->name); |
87a0366f | 3620 | goto error_return; |
9d958d5b | 3621 | } |
3622 | ||
3623 | gfc_extract_int (kind_expr, &kind_value); | |
e9366ef9 | 3624 | sprintf (name + strlen (name), "_%d", kind_value); |
9d958d5b | 3625 | |
3626 | if (!name_seen && actual_param) | |
3627 | actual_param = actual_param->next; | |
3628 | gfc_free_expr (kind_expr); | |
3629 | } | |
3630 | ||
87a0366f | 3631 | if (!name_seen && actual_param) |
3632 | { | |
3633 | gfc_error ("The type parameter spec list at %C contains too many " | |
3634 | "parameter expressions"); | |
3635 | goto error_return; | |
3636 | } | |
3637 | ||
9d958d5b | 3638 | /* Now we search for the PDT instance 'name'. If it doesn't exist, we |
3639 | build it, using 'pdt' as a template. */ | |
3640 | if (gfc_get_symbol (name, pdt->ns, &instance)) | |
3641 | { | |
3642 | gfc_error ("Parameterized derived type at %C is ambiguous"); | |
87a0366f | 3643 | goto error_return; |
9d958d5b | 3644 | } |
3645 | ||
3646 | m = MATCH_YES; | |
3647 | ||
3648 | if (instance->attr.flavor == FL_DERIVED | |
3649 | && instance->attr.pdt_type) | |
3650 | { | |
3651 | instance->refs++; | |
3652 | if (ext_param_list) | |
3653 | *ext_param_list = type_param_spec_list; | |
3654 | *sym = instance; | |
3655 | gfc_commit_symbols (); | |
3656 | return m; | |
3657 | } | |
3658 | ||
3659 | /* Start building the new instance of the parameterized type. */ | |
3660 | gfc_copy_attr (&instance->attr, &pdt->attr, &pdt->declared_at); | |
3661 | instance->attr.pdt_template = 0; | |
3662 | instance->attr.pdt_type = 1; | |
3663 | instance->declared_at = gfc_current_locus; | |
3664 | ||
3665 | /* Add the components, replacing the parameters in all expressions | |
3666 | with the expressions for their values in 'type_param_spec_list'. */ | |
3667 | c1 = pdt->components; | |
3668 | tail = type_param_spec_list; | |
3669 | for (; c1; c1 = c1->next) | |
3670 | { | |
3671 | gfc_add_component (instance, c1->name, &c2); | |
f0efd2e8 | 3672 | |
9d958d5b | 3673 | c2->ts = c1->ts; |
3674 | c2->attr = c1->attr; | |
3675 | ||
f0efd2e8 | 3676 | /* The order of declaration of the type_specs might not be the |
3677 | same as that of the components. */ | |
3678 | if (c1->attr.pdt_kind || c1->attr.pdt_len) | |
3679 | { | |
3680 | for (tail = type_param_spec_list; tail; tail = tail->next) | |
3681 | if (strcmp (c1->name, tail->name) == 0) | |
3682 | break; | |
3683 | } | |
3684 | ||
9d958d5b | 3685 | /* Deal with type extension by recursively calling this function |
3686 | to obtain the instance of the extended type. */ | |
3687 | if (gfc_current_state () != COMP_DERIVED | |
3688 | && c1 == pdt->components | |
3689 | && (c1->ts.type == BT_DERIVED || c1->ts.type == BT_CLASS) | |
3690 | && c1->ts.u.derived && c1->ts.u.derived->attr.pdt_template | |
3691 | && gfc_get_derived_super_type (*sym) == c2->ts.u.derived) | |
3692 | { | |
3693 | gfc_formal_arglist *f; | |
3694 | ||
3695 | old_param_spec_list = type_param_spec_list; | |
3696 | ||
3697 | /* Obtain a spec list appropriate to the extended type..*/ | |
3698 | actual_param = gfc_copy_actual_arglist (type_param_spec_list); | |
3699 | type_param_spec_list = actual_param; | |
3700 | for (f = c1->ts.u.derived->formal; f && f->next; f = f->next) | |
3701 | actual_param = actual_param->next; | |
3702 | if (actual_param) | |
3703 | { | |
3704 | gfc_free_actual_arglist (actual_param->next); | |
3705 | actual_param->next = NULL; | |
3706 | } | |
3707 | ||
3708 | /* Now obtain the PDT instance for the extended type. */ | |
3709 | c2->param_list = type_param_spec_list; | |
3710 | m = gfc_get_pdt_instance (type_param_spec_list, &c2->ts.u.derived, | |
3711 | NULL); | |
3712 | type_param_spec_list = old_param_spec_list; | |
3713 | ||
3714 | c2->ts.u.derived->refs++; | |
3715 | gfc_set_sym_referenced (c2->ts.u.derived); | |
3716 | ||
3717 | /* Set extension level. */ | |
3718 | if (c2->ts.u.derived->attr.extension == 255) | |
3719 | { | |
3720 | /* Since the extension field is 8 bit wide, we can only have | |
3721 | up to 255 extension levels. */ | |
3722 | gfc_error ("Maximum extension level reached with type %qs at %L", | |
3723 | c2->ts.u.derived->name, | |
3724 | &c2->ts.u.derived->declared_at); | |
87a0366f | 3725 | goto error_return; |
9d958d5b | 3726 | } |
3727 | instance->attr.extension = c2->ts.u.derived->attr.extension + 1; | |
3728 | ||
9d958d5b | 3729 | continue; |
3730 | } | |
3731 | ||
3732 | /* Set the component kind using the parameterized expression. */ | |
f0efd2e8 | 3733 | if ((c1->ts.kind == 0 || c1->ts.type == BT_CHARACTER) |
3734 | && c1->kind_expr != NULL) | |
9d958d5b | 3735 | { |
3736 | gfc_expr *e = gfc_copy_expr (c1->kind_expr); | |
3737 | gfc_insert_kind_parameter_exprs (e); | |
9f96fdfe | 3738 | gfc_simplify_expr (e, 1); |
9d958d5b | 3739 | gfc_extract_int (e, &c2->ts.kind); |
3740 | gfc_free_expr (e); | |
87a0366f | 3741 | if (gfc_validate_kind (c2->ts.type, c2->ts.kind, true) < 0) |
3742 | { | |
3743 | gfc_error ("Kind %d not supported for type %s at %C", | |
3744 | c2->ts.kind, gfc_basic_typename (c2->ts.type)); | |
3745 | goto error_return; | |
3746 | } | |
9d958d5b | 3747 | } |
3748 | ||
3749 | /* Similarly, set the string length if parameterized. */ | |
3750 | if (c1->ts.type == BT_CHARACTER | |
3751 | && c1->ts.u.cl->length | |
3752 | && gfc_derived_parameter_expr (c1->ts.u.cl->length)) | |
3753 | { | |
3754 | gfc_expr *e; | |
3755 | e = gfc_copy_expr (c1->ts.u.cl->length); | |
3756 | gfc_insert_kind_parameter_exprs (e); | |
3757 | gfc_simplify_expr (e, 1); | |
3758 | c2->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); | |
3759 | c2->ts.u.cl->length = e; | |
3760 | c2->attr.pdt_string = 1; | |
3761 | } | |
3762 | ||
3763 | /* Set up either the KIND/LEN initializer, if constant, | |
3764 | or the parameterized expression. Use the template | |
3765 | initializer if one is not already set in this instance. */ | |
3766 | if (c2->attr.pdt_kind || c2->attr.pdt_len) | |
3767 | { | |
3768 | if (tail && tail->expr && gfc_is_constant_expr (tail->expr)) | |
3769 | c2->initializer = gfc_copy_expr (tail->expr); | |
3770 | else if (tail && tail->expr) | |
3771 | { | |
3772 | c2->param_list = gfc_get_actual_arglist (); | |
3773 | c2->param_list->name = tail->name; | |
3774 | c2->param_list->expr = gfc_copy_expr (tail->expr); | |
3775 | c2->param_list->next = NULL; | |
3776 | } | |
3777 | ||
3778 | if (!c2->initializer && c1->initializer) | |
3779 | c2->initializer = gfc_copy_expr (c1->initializer); | |
9d958d5b | 3780 | } |
3781 | ||
3782 | /* Copy the array spec. */ | |
3783 | c2->as = gfc_copy_array_spec (c1->as); | |
3784 | if (c1->ts.type == BT_CLASS) | |
3785 | CLASS_DATA (c2)->as = gfc_copy_array_spec (CLASS_DATA (c1)->as); | |
3786 | ||
3787 | /* Determine if an array spec is parameterized. If so, substitute | |
3788 | in the parameter expressions for the bounds and set the pdt_array | |
3789 | attribute. Notice that this attribute must be unconditionally set | |
3790 | if this is an array of parameterized character length. */ | |
3791 | if (c1->as && c1->as->type == AS_EXPLICIT) | |
3792 | { | |
3793 | bool pdt_array = false; | |
3794 | ||
3795 | /* Are the bounds of the array parameterized? */ | |
3796 | for (i = 0; i < c1->as->rank; i++) | |
3797 | { | |
3798 | if (gfc_derived_parameter_expr (c1->as->lower[i])) | |
3799 | pdt_array = true; | |
3800 | if (gfc_derived_parameter_expr (c1->as->upper[i])) | |
3801 | pdt_array = true; | |
3802 | } | |
3803 | ||
3804 | /* If they are, free the expressions for the bounds and | |
3805 | replace them with the template expressions with substitute | |
3806 | values. */ | |
3807 | for (i = 0; pdt_array && i < c1->as->rank; i++) | |
3808 | { | |
3809 | gfc_expr *e; | |
3810 | e = gfc_copy_expr (c1->as->lower[i]); | |
3811 | gfc_insert_kind_parameter_exprs (e); | |
3812 | gfc_simplify_expr (e, 1); | |
3813 | gfc_free_expr (c2->as->lower[i]); | |
3814 | c2->as->lower[i] = e; | |
3815 | e = gfc_copy_expr (c1->as->upper[i]); | |
3816 | gfc_insert_kind_parameter_exprs (e); | |
3817 | gfc_simplify_expr (e, 1); | |
3818 | gfc_free_expr (c2->as->upper[i]); | |
3819 | c2->as->upper[i] = e; | |
3820 | } | |
3821 | c2->attr.pdt_array = pdt_array ? 1 : c2->attr.pdt_string; | |
8534bf8a | 3822 | if (c1->initializer) |
3823 | { | |
3824 | c2->initializer = gfc_copy_expr (c1->initializer); | |
3825 | gfc_insert_kind_parameter_exprs (c2->initializer); | |
3826 | gfc_simplify_expr (c2->initializer, 1); | |
3827 | } | |
9d958d5b | 3828 | } |
3829 | ||
3830 | /* Recurse into this function for PDT components. */ | |
3831 | if ((c1->ts.type == BT_DERIVED || c1->ts.type == BT_CLASS) | |
3832 | && c1->ts.u.derived && c1->ts.u.derived->attr.pdt_template) | |
3833 | { | |
3834 | gfc_actual_arglist *params; | |
3835 | /* The component in the template has a list of specification | |
3836 | expressions derived from its declaration. */ | |
3837 | params = gfc_copy_actual_arglist (c1->param_list); | |
3838 | actual_param = params; | |
3839 | /* Substitute the template parameters with the expressions | |
3840 | from the specification list. */ | |
3841 | for (;actual_param; actual_param = actual_param->next) | |
3842 | gfc_insert_parameter_exprs (actual_param->expr, | |
3843 | type_param_spec_list); | |
3844 | ||
3845 | /* Now obtain the PDT instance for the component. */ | |
3846 | old_param_spec_list = type_param_spec_list; | |
3847 | m = gfc_get_pdt_instance (params, &c2->ts.u.derived, NULL); | |
3848 | type_param_spec_list = old_param_spec_list; | |
3849 | ||
3850 | c2->param_list = params; | |
d11013dc | 3851 | if (!(c2->attr.pointer || c2->attr.allocatable)) |
3852 | c2->initializer = gfc_default_initializer (&c2->ts); | |
3853 | ||
3854 | if (c2->attr.allocatable) | |
3855 | instance->attr.alloc_comp = 1; | |
9d958d5b | 3856 | } |
3857 | } | |
3858 | ||
3859 | gfc_commit_symbol (instance); | |
3860 | if (ext_param_list) | |
3861 | *ext_param_list = type_param_spec_list; | |
3862 | *sym = instance; | |
3863 | return m; | |
87a0366f | 3864 | |
3865 | error_return: | |
3866 | gfc_free_actual_arglist (type_param_spec_list); | |
3867 | return MATCH_ERROR; | |
9d958d5b | 3868 | } |
3869 | ||
3870 | ||
e8152f13 | 3871 | /* Matches a declaration-type-spec (F03:R502). If successful, sets the ts |
3872 | structure to the matched specification. This is necessary for FUNCTION and | |
4ee9c684 | 3873 | IMPLICIT statements. |
3874 | ||
e14bee04 | 3875 | If implicit_flag is nonzero, then we don't check for the optional |
39351103 | 3876 | kind specification. Not doing so is needed for matching an IMPLICIT |
4ee9c684 | 3877 | statement correctly. */ |
3878 | ||
67a51c8e | 3879 | match |
e8152f13 | 3880 | gfc_match_decl_type_spec (gfc_typespec *ts, int implicit_flag) |
4ee9c684 | 3881 | { |
3882 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c2958b6b | 3883 | gfc_symbol *sym, *dt_sym; |
4ee9c684 | 3884 | match m; |
e0be6f02 | 3885 | char c; |
f446fb22 | 3886 | bool seen_deferred_kind, matched_type; |
c2958b6b | 3887 | const char *dt_name; |
4ee9c684 | 3888 | |
9d958d5b | 3889 | decl_type_param_list = NULL; |
3890 | ||
077932f9 | 3891 | /* A belt and braces check that the typespec is correctly being treated |
3892 | as a deferred characteristic association. */ | |
3893 | seen_deferred_kind = (gfc_current_state () == COMP_FUNCTION) | |
8d39570e | 3894 | && (gfc_current_block ()->result->ts.kind == -1) |
3895 | && (ts->kind == -1); | |
4ee9c684 | 3896 | gfc_clear_ts (ts); |
077932f9 | 3897 | if (seen_deferred_kind) |
3898 | ts->kind = -1; | |
4ee9c684 | 3899 | |
c5d33754 | 3900 | /* Clear the current binding label, in case one is given. */ |
7b2060ba | 3901 | curr_binding_label = NULL; |
c5d33754 | 3902 | |
25b29122 | 3903 | if (gfc_match (" byte") == MATCH_YES) |
3904 | { | |
60e19868 | 3905 | if (!gfc_notify_std (GFC_STD_GNU, "BYTE type at %C")) |
25b29122 | 3906 | return MATCH_ERROR; |
3907 | ||
3908 | if (gfc_validate_kind (BT_INTEGER, 1, true) < 0) | |
3909 | { | |
3910 | gfc_error ("BYTE type used at %C " | |
3911 | "is not available on the target machine"); | |
3912 | return MATCH_ERROR; | |
3913 | } | |
e14bee04 | 3914 | |
25b29122 | 3915 | ts->type = BT_INTEGER; |
3916 | ts->kind = 1; | |
3917 | return MATCH_YES; | |
3918 | } | |
3919 | ||
f446fb22 | 3920 | |
8c2d8d6d | 3921 | m = gfc_match (" type ("); |
f446fb22 | 3922 | matched_type = (m == MATCH_YES); |
8c2d8d6d | 3923 | if (matched_type) |
3924 | { | |
3925 | gfc_gobble_whitespace (); | |
3926 | if (gfc_peek_ascii_char () == '*') | |
3927 | { | |
3928 | if ((m = gfc_match ("*)")) != MATCH_YES) | |
3929 | return m; | |
d7cd448a | 3930 | if (gfc_comp_struct (gfc_current_state ())) |
8c2d8d6d | 3931 | { |
3932 | gfc_error ("Assumed type at %C is not allowed for components"); | |
3933 | return MATCH_ERROR; | |
3934 | } | |
2e2156cf | 3935 | if (!gfc_notify_std (GFC_STD_F2018, "Assumed type at %C")) |
8c2d8d6d | 3936 | return MATCH_ERROR; |
3937 | ts->type = BT_ASSUMED; | |
3938 | return MATCH_YES; | |
3939 | } | |
3940 | ||
3941 | m = gfc_match ("%n", name); | |
3942 | matched_type = (m == MATCH_YES); | |
3943 | } | |
3944 | ||
f446fb22 | 3945 | if ((matched_type && strcmp ("integer", name) == 0) |
3946 | || (!matched_type && gfc_match (" integer") == MATCH_YES)) | |
4ee9c684 | 3947 | { |
3948 | ts->type = BT_INTEGER; | |
b8a891cb | 3949 | ts->kind = gfc_default_integer_kind; |
4ee9c684 | 3950 | goto get_kind; |
3951 | } | |
3952 | ||
f446fb22 | 3953 | if ((matched_type && strcmp ("character", name) == 0) |
3954 | || (!matched_type && gfc_match (" character") == MATCH_YES)) | |
4ee9c684 | 3955 | { |
f446fb22 | 3956 | if (matched_type |
60e19868 | 3957 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3958 | "intrinsic-type-spec at %C")) | |
f446fb22 | 3959 | return MATCH_ERROR; |
3960 | ||
4ee9c684 | 3961 | ts->type = BT_CHARACTER; |
39351103 | 3962 | if (implicit_flag == 0) |
f446fb22 | 3963 | m = gfc_match_char_spec (ts); |
39351103 | 3964 | else |
f446fb22 | 3965 | m = MATCH_YES; |
3966 | ||
3967 | if (matched_type && m == MATCH_YES && gfc_match_char (')') != MATCH_YES) | |
3968 | m = MATCH_ERROR; | |
3969 | ||
3970 | return m; | |
4ee9c684 | 3971 | } |
3972 | ||
f446fb22 | 3973 | if ((matched_type && strcmp ("real", name) == 0) |
3974 | || (!matched_type && gfc_match (" real") == MATCH_YES)) | |
4ee9c684 | 3975 | { |
3976 | ts->type = BT_REAL; | |
b8a891cb | 3977 | ts->kind = gfc_default_real_kind; |
4ee9c684 | 3978 | goto get_kind; |
3979 | } | |
3980 | ||
f446fb22 | 3981 | if ((matched_type |
3982 | && (strcmp ("doubleprecision", name) == 0 | |
3983 | || (strcmp ("double", name) == 0 | |
3984 | && gfc_match (" precision") == MATCH_YES))) | |
3985 | || (!matched_type && gfc_match (" double precision") == MATCH_YES)) | |
4ee9c684 | 3986 | { |
f446fb22 | 3987 | if (matched_type |
60e19868 | 3988 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3989 | "intrinsic-type-spec at %C")) | |
f446fb22 | 3990 | return MATCH_ERROR; |
3991 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
3992 | return MATCH_ERROR; | |
3993 | ||
4ee9c684 | 3994 | ts->type = BT_REAL; |
b8a891cb | 3995 | ts->kind = gfc_default_double_kind; |
4ee9c684 | 3996 | return MATCH_YES; |
3997 | } | |
3998 | ||
f446fb22 | 3999 | if ((matched_type && strcmp ("complex", name) == 0) |
4000 | || (!matched_type && gfc_match (" complex") == MATCH_YES)) | |
4ee9c684 | 4001 | { |
4002 | ts->type = BT_COMPLEX; | |
b8a891cb | 4003 | ts->kind = gfc_default_complex_kind; |
4ee9c684 | 4004 | goto get_kind; |
4005 | } | |
4006 | ||
f446fb22 | 4007 | if ((matched_type |
4008 | && (strcmp ("doublecomplex", name) == 0 | |
4009 | || (strcmp ("double", name) == 0 | |
4010 | && gfc_match (" complex") == MATCH_YES))) | |
4011 | || (!matched_type && gfc_match (" double complex") == MATCH_YES)) | |
4ee9c684 | 4012 | { |
60e19868 | 4013 | if (!gfc_notify_std (GFC_STD_GNU, "DOUBLE COMPLEX at %C")) |
f446fb22 | 4014 | return MATCH_ERROR; |
4015 | ||
4016 | if (matched_type | |
60e19868 | 4017 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
4018 | "intrinsic-type-spec at %C")) | |
f446fb22 | 4019 | return MATCH_ERROR; |
4020 | ||
4021 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
be7f01a1 | 4022 | return MATCH_ERROR; |
4023 | ||
4ee9c684 | 4024 | ts->type = BT_COMPLEX; |
b8a891cb | 4025 | ts->kind = gfc_default_double_kind; |
4ee9c684 | 4026 | return MATCH_YES; |
4027 | } | |
4028 | ||
f446fb22 | 4029 | if ((matched_type && strcmp ("logical", name) == 0) |
4030 | || (!matched_type && gfc_match (" logical") == MATCH_YES)) | |
4ee9c684 | 4031 | { |
4032 | ts->type = BT_LOGICAL; | |
b8a891cb | 4033 | ts->kind = gfc_default_logical_kind; |
4ee9c684 | 4034 | goto get_kind; |
4035 | } | |
4036 | ||
f446fb22 | 4037 | if (matched_type) |
9d958d5b | 4038 | { |
4039 | m = gfc_match_actual_arglist (1, &decl_type_param_list, true); | |
4040 | if (m == MATCH_ERROR) | |
4041 | return m; | |
4042 | ||
f446fb22 | 4043 | m = gfc_match_char (')'); |
9d958d5b | 4044 | } |
f446fb22 | 4045 | |
d7cd448a | 4046 | if (m != MATCH_YES) |
4047 | m = match_record_decl (name); | |
4048 | ||
4049 | if (matched_type || m == MATCH_YES) | |
4050 | { | |
4051 | ts->type = BT_DERIVED; | |
4052 | /* We accept record/s/ or type(s) where s is a structure, but we | |
4053 | * don't need all the extra derived-type stuff for structures. */ | |
4054 | if (gfc_find_symbol (gfc_dt_upper_string (name), NULL, 1, &sym)) | |
4055 | { | |
1b7008c4 | 4056 | gfc_error ("Type name %qs at %C is ambiguous", name); |
d7cd448a | 4057 | return MATCH_ERROR; |
4058 | } | |
9d958d5b | 4059 | |
4060 | if (sym && sym->attr.flavor == FL_DERIVED | |
4061 | && sym->attr.pdt_template | |
4062 | && gfc_current_state () != COMP_DERIVED) | |
4063 | { | |
4064 | m = gfc_get_pdt_instance (decl_type_param_list, &sym, NULL); | |
4065 | if (m != MATCH_YES) | |
4066 | return m; | |
4067 | gcc_assert (!sym->attr.pdt_template && sym->attr.pdt_type); | |
4068 | ts->u.derived = sym; | |
4069 | strcpy (name, gfc_dt_lower_string (sym->name)); | |
4070 | } | |
4071 | ||
d7cd448a | 4072 | if (sym && sym->attr.flavor == FL_STRUCT) |
4073 | { | |
4074 | ts->u.derived = sym; | |
4075 | return MATCH_YES; | |
4076 | } | |
4077 | /* Actually a derived type. */ | |
4078 | } | |
4079 | ||
1de1b1a9 | 4080 | else |
8ca7f89c | 4081 | { |
d7cd448a | 4082 | /* Match nested STRUCTURE declarations; only valid within another |
891196d7 | 4083 | structure declaration. */ |
cf078427 | 4084 | if (flag_dec_structure |
891196d7 | 4085 | && (gfc_current_state () == COMP_STRUCTURE |
4086 | || gfc_current_state () == COMP_MAP)) | |
4087 | { | |
4088 | m = gfc_match (" structure"); | |
4089 | if (m == MATCH_YES) | |
4090 | { | |
4091 | m = gfc_match_structure_decl (); | |
4092 | if (m == MATCH_YES) | |
4093 | { | |
4094 | /* gfc_new_block is updated by match_structure_decl. */ | |
4095 | ts->type = BT_DERIVED; | |
4096 | ts->u.derived = gfc_new_block; | |
4097 | return MATCH_YES; | |
4098 | } | |
4099 | } | |
4100 | if (m == MATCH_ERROR) | |
4101 | return MATCH_ERROR; | |
4102 | } | |
d7cd448a | 4103 | |
fa102e56 | 4104 | /* Match CLASS declarations. */ |
4105 | m = gfc_match (" class ( * )"); | |
4106 | if (m == MATCH_ERROR) | |
4107 | return MATCH_ERROR; | |
4108 | else if (m == MATCH_YES) | |
4109 | { | |
a90fe829 | 4110 | gfc_symbol *upe; |
4111 | gfc_symtree *st; | |
4112 | ts->type = BT_CLASS; | |
8db94b3b | 4113 | gfc_find_symbol ("STAR", gfc_current_ns, 1, &upe); |
a90fe829 | 4114 | if (upe == NULL) |
4115 | { | |
8db94b3b | 4116 | upe = gfc_new_symbol ("STAR", gfc_current_ns); |
4117 | st = gfc_new_symtree (&gfc_current_ns->sym_root, "STAR"); | |
a90fe829 | 4118 | st->n.sym = upe; |
4119 | gfc_set_sym_referenced (upe); | |
4120 | upe->refs++; | |
4121 | upe->ts.type = BT_VOID; | |
4122 | upe->attr.unlimited_polymorphic = 1; | |
4123 | /* This is essential to force the construction of | |
4124 | unlimited polymorphic component class containers. */ | |
4125 | upe->attr.zero_comp = 1; | |
76e207a9 | 4126 | if (!gfc_add_flavor (&upe->attr, FL_DERIVED, NULL, |
60e19868 | 4127 | &gfc_current_locus)) |
f7b2c82b | 4128 | return MATCH_ERROR; |
4129 | } | |
a90fe829 | 4130 | else |
4131 | { | |
f7b2c82b | 4132 | st = gfc_get_tbp_symtree (&gfc_current_ns->sym_root, "STAR"); |
a90fe829 | 4133 | st->n.sym = upe; |
4134 | upe->refs++; | |
4135 | } | |
4136 | ts->u.derived = upe; | |
4137 | return m; | |
4138 | } | |
fa102e56 | 4139 | |
9d958d5b | 4140 | m = gfc_match (" class ("); |
4141 | ||
4142 | if (m == MATCH_YES) | |
4143 | m = gfc_match ("%n", name); | |
4144 | else | |
4145 | return m; | |
4146 | ||
8ca7f89c | 4147 | if (m != MATCH_YES) |
4148 | return m; | |
1de1b1a9 | 4149 | ts->type = BT_CLASS; |
8ca7f89c | 4150 | |
60e19868 | 4151 | if (!gfc_notify_std (GFC_STD_F2003, "CLASS statement at %C")) |
e8152f13 | 4152 | return MATCH_ERROR; |
9d958d5b | 4153 | |
4154 | m = gfc_match_actual_arglist (1, &decl_type_param_list, true); | |
4155 | if (m == MATCH_ERROR) | |
4156 | return m; | |
4157 | ||
4158 | m = gfc_match_char (')'); | |
4159 | if (m != MATCH_YES) | |
4160 | return m; | |
8ca7f89c | 4161 | } |
4ee9c684 | 4162 | |
077932f9 | 4163 | /* Defer association of the derived type until the end of the |
4164 | specification block. However, if the derived type can be | |
8db94b3b | 4165 | found, add it to the typespec. */ |
077932f9 | 4166 | if (gfc_matching_function) |
67a51c8e | 4167 | { |
eeebe20b | 4168 | ts->u.derived = NULL; |
077932f9 | 4169 | if (gfc_current_state () != COMP_INTERFACE |
4170 | && !gfc_find_symbol (name, NULL, 1, &sym) && sym) | |
c2958b6b | 4171 | { |
4172 | sym = gfc_find_dt_in_generic (sym); | |
4173 | ts->u.derived = sym; | |
4174 | } | |
67a51c8e | 4175 | return MATCH_YES; |
4176 | } | |
4177 | ||
4178 | /* Search for the name but allow the components to be defined later. If | |
4179 | type = -1, this typespec has been seen in a function declaration but | |
c2958b6b | 4180 | the type could not be accessed at that point. The actual derived type is |
df084314 | 4181 | stored in a symtree with the first letter of the name capitalized; the |
c2958b6b | 4182 | symtree with the all lower-case name contains the associated |
4183 | generic function. */ | |
d7cd448a | 4184 | dt_name = gfc_dt_upper_string (name); |
077932f9 | 4185 | sym = NULL; |
c2958b6b | 4186 | dt_sym = NULL; |
4187 | if (ts->kind != -1) | |
4ee9c684 | 4188 | { |
c2958b6b | 4189 | gfc_get_ha_symbol (name, &sym); |
4190 | if (sym->generic && gfc_find_symbol (dt_name, NULL, 0, &dt_sym)) | |
4191 | { | |
716da296 | 4192 | gfc_error ("Type name %qs at %C is ambiguous", name); |
c2958b6b | 4193 | return MATCH_ERROR; |
4194 | } | |
4195 | if (sym->generic && !dt_sym) | |
4196 | dt_sym = gfc_find_dt_in_generic (sym); | |
87a0366f | 4197 | |
4198 | /* Host associated PDTs can get confused with their constructors | |
4199 | because they ar instantiated in the template's namespace. */ | |
4200 | if (!dt_sym) | |
4201 | { | |
4202 | if (gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
4203 | { | |
4204 | gfc_error ("Type name %qs at %C is ambiguous", name); | |
4205 | return MATCH_ERROR; | |
4206 | } | |
4207 | if (dt_sym && !dt_sym->attr.pdt_type) | |
4208 | dt_sym = NULL; | |
4209 | } | |
4ee9c684 | 4210 | } |
67a51c8e | 4211 | else if (ts->kind == -1) |
4212 | { | |
077932f9 | 4213 | int iface = gfc_state_stack->previous->state != COMP_INTERFACE |
4214 | || gfc_current_ns->has_import_set; | |
c2958b6b | 4215 | gfc_find_symbol (name, NULL, iface, &sym); |
4216 | if (sym && sym->generic && gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
8db94b3b | 4217 | { |
716da296 | 4218 | gfc_error ("Type name %qs at %C is ambiguous", name); |
67a51c8e | 4219 | return MATCH_ERROR; |
4220 | } | |
c2958b6b | 4221 | if (sym && sym->generic && !dt_sym) |
4222 | dt_sym = gfc_find_dt_in_generic (sym); | |
67a51c8e | 4223 | |
077932f9 | 4224 | ts->kind = 0; |
67a51c8e | 4225 | if (sym == NULL) |
4226 | return MATCH_NO; | |
4227 | } | |
4ee9c684 | 4228 | |
d7cd448a | 4229 | if ((sym->attr.flavor != FL_UNKNOWN && sym->attr.flavor != FL_STRUCT |
c2958b6b | 4230 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.generic)) |
4231 | || sym->attr.subroutine) | |
4232 | { | |
e87256b0 | 4233 | gfc_error ("Type name %qs at %C conflicts with previously declared " |
4234 | "entity at %L, which has the same name", name, | |
4235 | &sym->declared_at); | |
c2958b6b | 4236 | return MATCH_ERROR; |
4237 | } | |
4ee9c684 | 4238 | |
9d958d5b | 4239 | if (sym && sym->attr.flavor == FL_DERIVED |
4240 | && sym->attr.pdt_template | |
4241 | && gfc_current_state () != COMP_DERIVED) | |
87a0366f | 4242 | { |
4243 | m = gfc_get_pdt_instance (decl_type_param_list, &sym, NULL); | |
4244 | if (m != MATCH_YES) | |
4245 | return m; | |
4246 | gcc_assert (!sym->attr.pdt_template && sym->attr.pdt_type); | |
4247 | ts->u.derived = sym; | |
4248 | strcpy (name, gfc_dt_lower_string (sym->name)); | |
4249 | } | |
9d958d5b | 4250 | |
72bec0a3 | 4251 | gfc_save_symbol_data (sym); |
077932f9 | 4252 | gfc_set_sym_referenced (sym); |
c2958b6b | 4253 | if (!sym->attr.generic |
60e19868 | 4254 | && !gfc_add_generic (&sym->attr, sym->name, NULL)) |
c2958b6b | 4255 | return MATCH_ERROR; |
4256 | ||
4257 | if (!sym->attr.function | |
60e19868 | 4258 | && !gfc_add_function (&sym->attr, sym->name, NULL)) |
c2958b6b | 4259 | return MATCH_ERROR; |
4260 | ||
9d958d5b | 4261 | if (dt_sym && dt_sym->attr.flavor == FL_DERIVED |
4262 | && dt_sym->attr.pdt_template | |
4263 | && gfc_current_state () != COMP_DERIVED) | |
4264 | { | |
4265 | m = gfc_get_pdt_instance (decl_type_param_list, &dt_sym, NULL); | |
4266 | if (m != MATCH_YES) | |
4267 | return m; | |
4268 | gcc_assert (!dt_sym->attr.pdt_template && dt_sym->attr.pdt_type); | |
4269 | } | |
4270 | ||
c2958b6b | 4271 | if (!dt_sym) |
4272 | { | |
4273 | gfc_interface *intr, *head; | |
4274 | ||
4275 | /* Use upper case to save the actual derived-type symbol. */ | |
4276 | gfc_get_symbol (dt_name, NULL, &dt_sym); | |
dc326dc0 | 4277 | dt_sym->name = gfc_get_string ("%s", sym->name); |
c2958b6b | 4278 | head = sym->generic; |
4279 | intr = gfc_get_interface (); | |
4280 | intr->sym = dt_sym; | |
4281 | intr->where = gfc_current_locus; | |
4282 | intr->next = head; | |
4283 | sym->generic = intr; | |
4284 | sym->attr.if_source = IFSRC_DECL; | |
4285 | } | |
72bec0a3 | 4286 | else |
4287 | gfc_save_symbol_data (dt_sym); | |
c2958b6b | 4288 | |
4289 | gfc_set_sym_referenced (dt_sym); | |
4290 | ||
d7cd448a | 4291 | if (dt_sym->attr.flavor != FL_DERIVED && dt_sym->attr.flavor != FL_STRUCT |
60e19868 | 4292 | && !gfc_add_flavor (&dt_sym->attr, FL_DERIVED, sym->name, NULL)) |
c2958b6b | 4293 | return MATCH_ERROR; |
4294 | ||
4295 | ts->u.derived = dt_sym; | |
4ee9c684 | 4296 | |
4297 | return MATCH_YES; | |
4298 | ||
4299 | get_kind: | |
f446fb22 | 4300 | if (matched_type |
60e19868 | 4301 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
4302 | "intrinsic-type-spec at %C")) | |
f446fb22 | 4303 | return MATCH_ERROR; |
4304 | ||
4ee9c684 | 4305 | /* For all types except double, derived and character, look for an |
4306 | optional kind specifier. MATCH_NO is actually OK at this point. */ | |
39351103 | 4307 | if (implicit_flag == 1) |
f446fb22 | 4308 | { |
4309 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
4310 | return MATCH_ERROR; | |
4311 | ||
4312 | return MATCH_YES; | |
4313 | } | |
4ee9c684 | 4314 | |
18f3698a | 4315 | if (gfc_current_form == FORM_FREE) |
4316 | { | |
2c89e2a0 | 4317 | c = gfc_peek_ascii_char (); |
4318 | if (!gfc_is_whitespace (c) && c != '*' && c != '(' | |
1a9745d2 | 4319 | && c != ':' && c != ',') |
f446fb22 | 4320 | { |
4321 | if (matched_type && c == ')') | |
4322 | { | |
4323 | gfc_next_ascii_char (); | |
4324 | return MATCH_YES; | |
4325 | } | |
4326 | return MATCH_NO; | |
4327 | } | |
18f3698a | 4328 | } |
4329 | ||
67a51c8e | 4330 | m = gfc_match_kind_spec (ts, false); |
4ee9c684 | 4331 | if (m == MATCH_NO && ts->type != BT_CHARACTER) |
9627a89d | 4332 | { |
4333 | m = gfc_match_old_kind_spec (ts); | |
4334 | if (gfc_validate_kind (ts->type, ts->kind, true) == -1) | |
4335 | return MATCH_ERROR; | |
4336 | } | |
4ee9c684 | 4337 | |
f446fb22 | 4338 | if (matched_type && gfc_match_char (')') != MATCH_YES) |
4339 | return MATCH_ERROR; | |
4340 | ||
077932f9 | 4341 | /* Defer association of the KIND expression of function results |
4342 | until after USE and IMPORT statements. */ | |
4343 | if ((gfc_current_state () == COMP_NONE && gfc_error_flag_test ()) | |
4344 | || gfc_matching_function) | |
4345 | return MATCH_YES; | |
4346 | ||
4ee9c684 | 4347 | if (m == MATCH_NO) |
4348 | m = MATCH_YES; /* No kind specifier found. */ | |
4349 | ||
4350 | return m; | |
4351 | } | |
4352 | ||
4353 | ||
39351103 | 4354 | /* Match an IMPLICIT NONE statement. Actually, this statement is |
4355 | already matched in parse.c, or we would not end up here in the | |
4356 | first place. So the only thing we need to check, is if there is | |
4357 | trailing garbage. If not, the match is successful. */ | |
4358 | ||
4359 | match | |
4360 | gfc_match_implicit_none (void) | |
4361 | { | |
0daab503 | 4362 | char c; |
4363 | match m; | |
4364 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4365 | bool type = false; | |
4366 | bool external = false; | |
94fea777 | 4367 | locus cur_loc = gfc_current_locus; |
4368 | ||
4369 | if (gfc_current_ns->seen_implicit_none | |
4370 | || gfc_current_ns->has_implicit_none_export) | |
4371 | { | |
4372 | gfc_error ("Duplicate IMPLICIT NONE statement at %C"); | |
4373 | return MATCH_ERROR; | |
4374 | } | |
0daab503 | 4375 | |
4376 | gfc_gobble_whitespace (); | |
4377 | c = gfc_peek_ascii_char (); | |
4378 | if (c == '(') | |
4379 | { | |
4380 | (void) gfc_next_ascii_char (); | |
003e134b | 4381 | if (!gfc_notify_std (GFC_STD_F2018, "IMPORT NONE with spec list at %C")) |
0daab503 | 4382 | return MATCH_ERROR; |
94fea777 | 4383 | |
4384 | gfc_gobble_whitespace (); | |
4385 | if (gfc_peek_ascii_char () == ')') | |
0daab503 | 4386 | { |
94fea777 | 4387 | (void) gfc_next_ascii_char (); |
4388 | type = true; | |
4389 | } | |
4390 | else | |
4391 | for(;;) | |
4392 | { | |
4393 | m = gfc_match (" %n", name); | |
4394 | if (m != MATCH_YES) | |
4395 | return MATCH_ERROR; | |
0daab503 | 4396 | |
94fea777 | 4397 | if (strcmp (name, "type") == 0) |
4398 | type = true; | |
4399 | else if (strcmp (name, "external") == 0) | |
4400 | external = true; | |
4401 | else | |
4402 | return MATCH_ERROR; | |
0daab503 | 4403 | |
94fea777 | 4404 | gfc_gobble_whitespace (); |
4405 | c = gfc_next_ascii_char (); | |
4406 | if (c == ',') | |
4407 | continue; | |
4408 | if (c == ')') | |
4409 | break; | |
4410 | return MATCH_ERROR; | |
4411 | } | |
0daab503 | 4412 | } |
4413 | else | |
4414 | type = true; | |
4415 | ||
4416 | if (gfc_match_eos () != MATCH_YES) | |
4417 | return MATCH_ERROR; | |
4418 | ||
94fea777 | 4419 | gfc_set_implicit_none (type, external, &cur_loc); |
0daab503 | 4420 | |
4421 | return MATCH_YES; | |
39351103 | 4422 | } |
4423 | ||
4424 | ||
4425 | /* Match the letter range(s) of an IMPLICIT statement. */ | |
4426 | ||
4427 | static match | |
b70528c7 | 4428 | match_implicit_range (void) |
39351103 | 4429 | { |
e0be6f02 | 4430 | char c, c1, c2; |
4431 | int inner; | |
39351103 | 4432 | locus cur_loc; |
4433 | ||
4434 | cur_loc = gfc_current_locus; | |
4435 | ||
4436 | gfc_gobble_whitespace (); | |
e0be6f02 | 4437 | c = gfc_next_ascii_char (); |
39351103 | 4438 | if (c != '(') |
4439 | { | |
4440 | gfc_error ("Missing character range in IMPLICIT at %C"); | |
4441 | goto bad; | |
4442 | } | |
4443 | ||
4444 | inner = 1; | |
4445 | while (inner) | |
4446 | { | |
4447 | gfc_gobble_whitespace (); | |
e0be6f02 | 4448 | c1 = gfc_next_ascii_char (); |
39351103 | 4449 | if (!ISALPHA (c1)) |
4450 | goto bad; | |
4451 | ||
4452 | gfc_gobble_whitespace (); | |
e0be6f02 | 4453 | c = gfc_next_ascii_char (); |
39351103 | 4454 | |
4455 | switch (c) | |
4456 | { | |
4457 | case ')': | |
f6d0e37a | 4458 | inner = 0; /* Fall through. */ |
39351103 | 4459 | |
4460 | case ',': | |
4461 | c2 = c1; | |
4462 | break; | |
4463 | ||
4464 | case '-': | |
4465 | gfc_gobble_whitespace (); | |
e0be6f02 | 4466 | c2 = gfc_next_ascii_char (); |
39351103 | 4467 | if (!ISALPHA (c2)) |
4468 | goto bad; | |
4469 | ||
4470 | gfc_gobble_whitespace (); | |
e0be6f02 | 4471 | c = gfc_next_ascii_char (); |
39351103 | 4472 | |
4473 | if ((c != ',') && (c != ')')) | |
4474 | goto bad; | |
4475 | if (c == ')') | |
4476 | inner = 0; | |
4477 | ||
4478 | break; | |
4479 | ||
4480 | default: | |
4481 | goto bad; | |
4482 | } | |
4483 | ||
4484 | if (c1 > c2) | |
4485 | { | |
4486 | gfc_error ("Letters must be in alphabetic order in " | |
4487 | "IMPLICIT statement at %C"); | |
4488 | goto bad; | |
4489 | } | |
4490 | ||
4491 | /* See if we can add the newly matched range to the pending | |
1a9745d2 | 4492 | implicits from this IMPLICIT statement. We do not check for |
4493 | conflicts with whatever earlier IMPLICIT statements may have | |
4494 | set. This is done when we've successfully finished matching | |
4495 | the current one. */ | |
60e19868 | 4496 | if (!gfc_add_new_implicit_range (c1, c2)) |
39351103 | 4497 | goto bad; |
4498 | } | |
4499 | ||
4500 | return MATCH_YES; | |
4501 | ||
4502 | bad: | |
4503 | gfc_syntax_error (ST_IMPLICIT); | |
4504 | ||
4505 | gfc_current_locus = cur_loc; | |
4506 | return MATCH_ERROR; | |
4507 | } | |
4508 | ||
4509 | ||
4510 | /* Match an IMPLICIT statement, storing the types for | |
4511 | gfc_set_implicit() if the statement is accepted by the parser. | |
4512 | There is a strange looking, but legal syntactic construction | |
4513 | possible. It looks like: | |
4514 | ||
4515 | IMPLICIT INTEGER (a-b) (c-d) | |
4516 | ||
4517 | This is legal if "a-b" is a constant expression that happens to | |
4518 | equal one of the legal kinds for integers. The real problem | |
4519 | happens with an implicit specification that looks like: | |
4520 | ||
4521 | IMPLICIT INTEGER (a-b) | |
4522 | ||
4523 | In this case, a typespec matcher that is "greedy" (as most of the | |
4524 | matchers are) gobbles the character range as a kindspec, leaving | |
4525 | nothing left. We therefore have to go a bit more slowly in the | |
4526 | matching process by inhibiting the kindspec checking during | |
4527 | typespec matching and checking for a kind later. */ | |
4528 | ||
4529 | match | |
4530 | gfc_match_implicit (void) | |
4531 | { | |
4532 | gfc_typespec ts; | |
4533 | locus cur_loc; | |
e0be6f02 | 4534 | char c; |
39351103 | 4535 | match m; |
4536 | ||
0daab503 | 4537 | if (gfc_current_ns->seen_implicit_none) |
4538 | { | |
4539 | gfc_error ("IMPLICIT statement at %C following an IMPLICIT NONE (type) " | |
4540 | "statement"); | |
4541 | return MATCH_ERROR; | |
4542 | } | |
4543 | ||
52179f31 | 4544 | gfc_clear_ts (&ts); |
4545 | ||
39351103 | 4546 | /* We don't allow empty implicit statements. */ |
4547 | if (gfc_match_eos () == MATCH_YES) | |
4548 | { | |
4549 | gfc_error ("Empty IMPLICIT statement at %C"); | |
4550 | return MATCH_ERROR; | |
4551 | } | |
4552 | ||
39351103 | 4553 | do |
4554 | { | |
b70528c7 | 4555 | /* First cleanup. */ |
4556 | gfc_clear_new_implicit (); | |
4557 | ||
39351103 | 4558 | /* A basic type is mandatory here. */ |
e8152f13 | 4559 | m = gfc_match_decl_type_spec (&ts, 1); |
39351103 | 4560 | if (m == MATCH_ERROR) |
4561 | goto error; | |
4562 | if (m == MATCH_NO) | |
4563 | goto syntax; | |
4564 | ||
4565 | cur_loc = gfc_current_locus; | |
b70528c7 | 4566 | m = match_implicit_range (); |
39351103 | 4567 | |
4568 | if (m == MATCH_YES) | |
4569 | { | |
b70528c7 | 4570 | /* We may have <TYPE> (<RANGE>). */ |
39351103 | 4571 | gfc_gobble_whitespace (); |
94fea777 | 4572 | c = gfc_peek_ascii_char (); |
4573 | if (c == ',' || c == '\n' || c == ';' || c == '!') | |
b70528c7 | 4574 | { |
4575 | /* Check for CHARACTER with no length parameter. */ | |
eeebe20b | 4576 | if (ts.type == BT_CHARACTER && !ts.u.cl) |
b70528c7 | 4577 | { |
b8a891cb | 4578 | ts.kind = gfc_default_character_kind; |
d270ce52 | 4579 | ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
9f4d9f83 | 4580 | ts.u.cl->length = gfc_get_int_expr (gfc_charlen_int_kind, |
126387b5 | 4581 | NULL, 1); |
b70528c7 | 4582 | } |
4583 | ||
4584 | /* Record the Successful match. */ | |
60e19868 | 4585 | if (!gfc_merge_new_implicit (&ts)) |
b70528c7 | 4586 | return MATCH_ERROR; |
94fea777 | 4587 | if (c == ',') |
4588 | c = gfc_next_ascii_char (); | |
4589 | else if (gfc_match_eos () == MATCH_ERROR) | |
4590 | goto error; | |
b70528c7 | 4591 | continue; |
4592 | } | |
39351103 | 4593 | |
4594 | gfc_current_locus = cur_loc; | |
4595 | } | |
4596 | ||
b70528c7 | 4597 | /* Discard the (incorrectly) matched range. */ |
4598 | gfc_clear_new_implicit (); | |
4599 | ||
4600 | /* Last chance -- check <TYPE> <SELECTOR> (<RANGE>). */ | |
4601 | if (ts.type == BT_CHARACTER) | |
10f5dcc0 | 4602 | m = gfc_match_char_spec (&ts); |
b70528c7 | 4603 | else |
39351103 | 4604 | { |
67a51c8e | 4605 | m = gfc_match_kind_spec (&ts, false); |
39351103 | 4606 | if (m == MATCH_NO) |
b70528c7 | 4607 | { |
4608 | m = gfc_match_old_kind_spec (&ts); | |
4609 | if (m == MATCH_ERROR) | |
4610 | goto error; | |
4611 | if (m == MATCH_NO) | |
4612 | goto syntax; | |
4613 | } | |
39351103 | 4614 | } |
b70528c7 | 4615 | if (m == MATCH_ERROR) |
4616 | goto error; | |
39351103 | 4617 | |
b70528c7 | 4618 | m = match_implicit_range (); |
39351103 | 4619 | if (m == MATCH_ERROR) |
4620 | goto error; | |
4621 | if (m == MATCH_NO) | |
4622 | goto syntax; | |
4623 | ||
4624 | gfc_gobble_whitespace (); | |
e0be6f02 | 4625 | c = gfc_next_ascii_char (); |
94fea777 | 4626 | if (c != ',' && gfc_match_eos () != MATCH_YES) |
39351103 | 4627 | goto syntax; |
4628 | ||
60e19868 | 4629 | if (!gfc_merge_new_implicit (&ts)) |
b70528c7 | 4630 | return MATCH_ERROR; |
39351103 | 4631 | } |
4632 | while (c == ','); | |
4633 | ||
b70528c7 | 4634 | return MATCH_YES; |
39351103 | 4635 | |
4636 | syntax: | |
4637 | gfc_syntax_error (ST_IMPLICIT); | |
4638 | ||
4639 | error: | |
4640 | return MATCH_ERROR; | |
4641 | } | |
4642 | ||
f6d0e37a | 4643 | |
d67fc9ae | 4644 | match |
4645 | gfc_match_import (void) | |
4646 | { | |
4647 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4648 | match m; | |
4649 | gfc_symbol *sym; | |
4650 | gfc_symtree *st; | |
4651 | ||
f6d0e37a | 4652 | if (gfc_current_ns->proc_name == NULL |
4653 | || gfc_current_ns->proc_name->attr.if_source != IFSRC_IFBODY) | |
d67fc9ae | 4654 | { |
4655 | gfc_error ("IMPORT statement at %C only permitted in " | |
4656 | "an INTERFACE body"); | |
4657 | return MATCH_ERROR; | |
4658 | } | |
4659 | ||
4b8eb6ca | 4660 | if (gfc_current_ns->proc_name->attr.module_procedure) |
4661 | { | |
4662 | gfc_error ("F2008: C1210 IMPORT statement at %C is not permitted " | |
4663 | "in a module procedure interface body"); | |
4664 | return MATCH_ERROR; | |
4665 | } | |
4666 | ||
60e19868 | 4667 | if (!gfc_notify_std (GFC_STD_F2003, "IMPORT statement at %C")) |
d67fc9ae | 4668 | return MATCH_ERROR; |
4669 | ||
4670 | if (gfc_match_eos () == MATCH_YES) | |
4671 | { | |
4672 | /* All host variables should be imported. */ | |
4673 | gfc_current_ns->has_import_set = 1; | |
4674 | return MATCH_YES; | |
4675 | } | |
4676 | ||
4677 | if (gfc_match (" ::") == MATCH_YES) | |
4678 | { | |
4679 | if (gfc_match_eos () == MATCH_YES) | |
1a9745d2 | 4680 | { |
4681 | gfc_error ("Expecting list of named entities at %C"); | |
4682 | return MATCH_ERROR; | |
4683 | } | |
d67fc9ae | 4684 | } |
4685 | ||
4686 | for(;;) | |
4687 | { | |
495e197c | 4688 | sym = NULL; |
d67fc9ae | 4689 | m = gfc_match (" %n", name); |
4690 | switch (m) | |
4691 | { | |
4692 | case MATCH_YES: | |
096d4ad9 | 4693 | if (gfc_current_ns->parent != NULL |
f6d0e37a | 4694 | && gfc_find_symbol (name, gfc_current_ns->parent, 1, &sym)) |
096d4ad9 | 4695 | { |
716da296 | 4696 | gfc_error ("Type name %qs at %C is ambiguous", name); |
096d4ad9 | 4697 | return MATCH_ERROR; |
4698 | } | |
6b010511 | 4699 | else if (!sym && gfc_current_ns->proc_name->ns->parent != NULL |
f6d0e37a | 4700 | && gfc_find_symbol (name, |
4701 | gfc_current_ns->proc_name->ns->parent, | |
4702 | 1, &sym)) | |
1a9745d2 | 4703 | { |
716da296 | 4704 | gfc_error ("Type name %qs at %C is ambiguous", name); |
1a9745d2 | 4705 | return MATCH_ERROR; |
4706 | } | |
4707 | ||
4708 | if (sym == NULL) | |
4709 | { | |
716da296 | 4710 | gfc_error ("Cannot IMPORT %qs from host scoping unit " |
1a9745d2 | 4711 | "at %C - does not exist.", name); |
4712 | return MATCH_ERROR; | |
4713 | } | |
4714 | ||
d67dd34f | 4715 | if (gfc_find_symtree (gfc_current_ns->sym_root, name)) |
1a9745d2 | 4716 | { |
6f521718 | 4717 | gfc_warning (0, "%qs is already IMPORTed from host scoping unit " |
4166acc7 | 4718 | "at %C", name); |
1a9745d2 | 4719 | goto next_item; |
4720 | } | |
4721 | ||
d67dd34f | 4722 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); |
1a9745d2 | 4723 | st->n.sym = sym; |
4724 | sym->refs++; | |
c723595c | 4725 | sym->attr.imported = 1; |
d67fc9ae | 4726 | |
c2958b6b | 4727 | if (sym->attr.generic && (sym = gfc_find_dt_in_generic (sym))) |
4728 | { | |
4729 | /* The actual derived type is stored in a symtree with the first | |
df084314 | 4730 | letter of the name capitalized; the symtree with the all |
293d72e0 | 4731 | lower-case name contains the associated generic function. */ |
c2958b6b | 4732 | st = gfc_new_symtree (&gfc_current_ns->sym_root, |
d7cd448a | 4733 | gfc_dt_upper_string (name)); |
c2958b6b | 4734 | st->n.sym = sym; |
4735 | sym->refs++; | |
4736 | sym->attr.imported = 1; | |
4737 | } | |
4738 | ||
d67fc9ae | 4739 | goto next_item; |
4740 | ||
4741 | case MATCH_NO: | |
4742 | break; | |
4743 | ||
4744 | case MATCH_ERROR: | |
4745 | return MATCH_ERROR; | |
4746 | } | |
4747 | ||
4748 | next_item: | |
4749 | if (gfc_match_eos () == MATCH_YES) | |
4750 | break; | |
4751 | if (gfc_match_char (',') != MATCH_YES) | |
4752 | goto syntax; | |
4753 | } | |
4754 | ||
4755 | return MATCH_YES; | |
4756 | ||
4757 | syntax: | |
4758 | gfc_error ("Syntax error in IMPORT statement at %C"); | |
4759 | return MATCH_ERROR; | |
4760 | } | |
39351103 | 4761 | |
f6d0e37a | 4762 | |
c72e5f7e | 4763 | /* A minimal implementation of gfc_match without whitespace, escape |
4764 | characters or variable arguments. Returns true if the next | |
4765 | characters match the TARGET template exactly. */ | |
4766 | ||
4767 | static bool | |
4768 | match_string_p (const char *target) | |
4769 | { | |
4770 | const char *p; | |
4771 | ||
4772 | for (p = target; *p; p++) | |
e0be6f02 | 4773 | if ((char) gfc_next_ascii_char () != *p) |
c72e5f7e | 4774 | return false; |
4775 | return true; | |
4776 | } | |
4777 | ||
4ee9c684 | 4778 | /* Matches an attribute specification including array specs. If |
4779 | successful, leaves the variables current_attr and current_as | |
4780 | holding the specification. Also sets the colon_seen variable for | |
4781 | later use by matchers associated with initializations. | |
4782 | ||
4783 | This subroutine is a little tricky in the sense that we don't know | |
4784 | if we really have an attr-spec until we hit the double colon. | |
4785 | Until that time, we can only return MATCH_NO. This forces us to | |
4786 | check for duplicate specification at this level. */ | |
4787 | ||
4788 | static match | |
4789 | match_attr_spec (void) | |
4790 | { | |
4ee9c684 | 4791 | /* Modifiers that can exist in a type statement. */ |
d55c3689 | 4792 | enum |
55be378c | 4793 | { GFC_DECL_BEGIN = 0, DECL_ALLOCATABLE = GFC_DECL_BEGIN, |
4794 | DECL_IN = INTENT_IN, DECL_OUT = INTENT_OUT, DECL_INOUT = INTENT_INOUT, | |
4795 | DECL_DIMENSION, DECL_EXTERNAL, | |
4796 | DECL_INTRINSIC, DECL_OPTIONAL, | |
3ea52af3 | 4797 | DECL_PARAMETER, DECL_POINTER, DECL_PROTECTED, DECL_PRIVATE, |
8e652fcf | 4798 | DECL_STATIC, DECL_AUTOMATIC, |
3ea52af3 | 4799 | DECL_PUBLIC, DECL_SAVE, DECL_TARGET, DECL_VALUE, DECL_VOLATILE, |
b3c3927c | 4800 | DECL_IS_BIND_C, DECL_CODIMENSION, DECL_ASYNCHRONOUS, DECL_CONTIGUOUS, |
9d958d5b | 4801 | DECL_LEN, DECL_KIND, DECL_NONE, GFC_DECL_END /* Sentinel */ |
d55c3689 | 4802 | }; |
4ee9c684 | 4803 | |
4804 | /* GFC_DECL_END is the sentinel, index starts at 0. */ | |
4805 | #define NUM_DECL GFC_DECL_END | |
4806 | ||
55be378c | 4807 | /* Make sure that values from sym_intent are safe to be used here. */ |
4808 | gcc_assert (INTENT_IN > 0); | |
4809 | ||
4ee9c684 | 4810 | locus start, seen_at[NUM_DECL]; |
4811 | int seen[NUM_DECL]; | |
9f1b7d17 | 4812 | unsigned int d; |
4ee9c684 | 4813 | const char *attr; |
4814 | match m; | |
60e19868 | 4815 | bool t; |
4ee9c684 | 4816 | |
4817 | gfc_clear_attr (¤t_attr); | |
cbb9e6aa | 4818 | start = gfc_current_locus; |
4ee9c684 | 4819 | |
4820 | current_as = NULL; | |
4821 | colon_seen = 0; | |
8ef2cf76 | 4822 | attr_seen = 0; |
4ee9c684 | 4823 | |
4824 | /* See if we get all of the keywords up to the final double colon. */ | |
4825 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
4826 | seen[d] = 0; | |
4827 | ||
4828 | for (;;) | |
4829 | { | |
e0be6f02 | 4830 | char ch; |
c5d33754 | 4831 | |
c72e5f7e | 4832 | d = DECL_NONE; |
4833 | gfc_gobble_whitespace (); | |
4834 | ||
e0be6f02 | 4835 | ch = gfc_next_ascii_char (); |
c72e5f7e | 4836 | if (ch == ':') |
4837 | { | |
4838 | /* This is the successful exit condition for the loop. */ | |
e0be6f02 | 4839 | if (gfc_next_ascii_char () == ':') |
c72e5f7e | 4840 | break; |
4841 | } | |
4842 | else if (ch == ',') | |
c5d33754 | 4843 | { |
c5d33754 | 4844 | gfc_gobble_whitespace (); |
e0be6f02 | 4845 | switch (gfc_peek_ascii_char ()) |
c5d33754 | 4846 | { |
c72e5f7e | 4847 | case 'a': |
738928be | 4848 | gfc_next_ascii_char (); |
4849 | switch (gfc_next_ascii_char ()) | |
4850 | { | |
4851 | case 'l': | |
4852 | if (match_string_p ("locatable")) | |
4853 | { | |
4854 | /* Matched "allocatable". */ | |
4855 | d = DECL_ALLOCATABLE; | |
4856 | } | |
4857 | break; | |
4858 | ||
4859 | case 's': | |
4860 | if (match_string_p ("ynchronous")) | |
4861 | { | |
4862 | /* Matched "asynchronous". */ | |
4863 | d = DECL_ASYNCHRONOUS; | |
4864 | } | |
4865 | break; | |
8e652fcf | 4866 | |
4867 | case 'u': | |
4868 | if (match_string_p ("tomatic")) | |
4869 | { | |
4870 | /* Matched "automatic". */ | |
4871 | d = DECL_AUTOMATIC; | |
4872 | } | |
4873 | break; | |
738928be | 4874 | } |
b3c3927c | 4875 | break; |
c72e5f7e | 4876 | |
4877 | case 'b': | |
c5d33754 | 4878 | /* Try and match the bind(c). */ |
75ae7f6c | 4879 | m = gfc_match_bind_c (NULL, true); |
5cf92482 | 4880 | if (m == MATCH_YES) |
c5d33754 | 4881 | d = DECL_IS_BIND_C; |
5cf92482 | 4882 | else if (m == MATCH_ERROR) |
4883 | goto cleanup; | |
c72e5f7e | 4884 | break; |
4885 | ||
aff518b0 | 4886 | case 'c': |
b3c3927c | 4887 | gfc_next_ascii_char (); |
4888 | if ('o' != gfc_next_ascii_char ()) | |
4889 | break; | |
4890 | switch (gfc_next_ascii_char ()) | |
4891 | { | |
4892 | case 'd': | |
4893 | if (match_string_p ("imension")) | |
4894 | { | |
4895 | d = DECL_CODIMENSION; | |
4896 | break; | |
4897 | } | |
e3533433 | 4898 | /* FALLTHRU */ |
b3c3927c | 4899 | case 'n': |
4900 | if (match_string_p ("tiguous")) | |
4901 | { | |
4902 | d = DECL_CONTIGUOUS; | |
4903 | break; | |
4904 | } | |
4905 | } | |
aff518b0 | 4906 | break; |
4907 | ||
c72e5f7e | 4908 | case 'd': |
4909 | if (match_string_p ("dimension")) | |
4910 | d = DECL_DIMENSION; | |
4911 | break; | |
4912 | ||
4913 | case 'e': | |
4914 | if (match_string_p ("external")) | |
4915 | d = DECL_EXTERNAL; | |
4916 | break; | |
4917 | ||
4918 | case 'i': | |
4919 | if (match_string_p ("int")) | |
4920 | { | |
e0be6f02 | 4921 | ch = gfc_next_ascii_char (); |
c72e5f7e | 4922 | if (ch == 'e') |
4923 | { | |
4924 | if (match_string_p ("nt")) | |
4925 | { | |
4926 | /* Matched "intent". */ | |
55be378c | 4927 | d = match_intent_spec (); |
4928 | if (d == INTENT_UNKNOWN) | |
4929 | { | |
4930 | m = MATCH_ERROR; | |
4931 | goto cleanup; | |
4932 | } | |
c72e5f7e | 4933 | } |
4934 | } | |
4935 | else if (ch == 'r') | |
4936 | { | |
4937 | if (match_string_p ("insic")) | |
4938 | { | |
4939 | /* Matched "intrinsic". */ | |
4940 | d = DECL_INTRINSIC; | |
4941 | } | |
4942 | } | |
4943 | } | |
4944 | break; | |
4945 | ||
9d958d5b | 4946 | case 'k': |
4947 | if (match_string_p ("kind")) | |
4948 | d = DECL_KIND; | |
4949 | break; | |
4950 | ||
4951 | case 'l': | |
4952 | if (match_string_p ("len")) | |
4953 | d = DECL_LEN; | |
4954 | break; | |
4955 | ||
c72e5f7e | 4956 | case 'o': |
4957 | if (match_string_p ("optional")) | |
4958 | d = DECL_OPTIONAL; | |
4959 | break; | |
4960 | ||
4961 | case 'p': | |
e0be6f02 | 4962 | gfc_next_ascii_char (); |
4963 | switch (gfc_next_ascii_char ()) | |
c72e5f7e | 4964 | { |
4965 | case 'a': | |
4966 | if (match_string_p ("rameter")) | |
4967 | { | |
4968 | /* Matched "parameter". */ | |
4969 | d = DECL_PARAMETER; | |
4970 | } | |
4971 | break; | |
4972 | ||
4973 | case 'o': | |
4974 | if (match_string_p ("inter")) | |
4975 | { | |
4976 | /* Matched "pointer". */ | |
4977 | d = DECL_POINTER; | |
4978 | } | |
4979 | break; | |
4980 | ||
4981 | case 'r': | |
e0be6f02 | 4982 | ch = gfc_next_ascii_char (); |
c72e5f7e | 4983 | if (ch == 'i') |
4984 | { | |
4985 | if (match_string_p ("vate")) | |
4986 | { | |
4987 | /* Matched "private". */ | |
4988 | d = DECL_PRIVATE; | |
4989 | } | |
4990 | } | |
4991 | else if (ch == 'o') | |
4992 | { | |
4993 | if (match_string_p ("tected")) | |
4994 | { | |
4995 | /* Matched "protected". */ | |
4996 | d = DECL_PROTECTED; | |
4997 | } | |
4998 | } | |
4999 | break; | |
5000 | ||
5001 | case 'u': | |
5002 | if (match_string_p ("blic")) | |
5003 | { | |
5004 | /* Matched "public". */ | |
5005 | d = DECL_PUBLIC; | |
5006 | } | |
5007 | break; | |
5008 | } | |
5009 | break; | |
5010 | ||
5011 | case 's': | |
8e652fcf | 5012 | gfc_next_ascii_char (); |
5013 | switch (gfc_next_ascii_char ()) | |
5014 | { | |
5015 | case 'a': | |
5016 | if (match_string_p ("ve")) | |
5017 | { | |
5018 | /* Matched "save". */ | |
5019 | d = DECL_SAVE; | |
5020 | } | |
5021 | break; | |
5022 | ||
5023 | case 't': | |
5024 | if (match_string_p ("atic")) | |
5025 | { | |
5026 | /* Matched "static". */ | |
5027 | d = DECL_STATIC; | |
5028 | } | |
5029 | break; | |
5030 | } | |
c72e5f7e | 5031 | break; |
5032 | ||
5033 | case 't': | |
5034 | if (match_string_p ("target")) | |
5035 | d = DECL_TARGET; | |
5036 | break; | |
5037 | ||
5038 | case 'v': | |
e0be6f02 | 5039 | gfc_next_ascii_char (); |
5040 | ch = gfc_next_ascii_char (); | |
c72e5f7e | 5041 | if (ch == 'a') |
5042 | { | |
5043 | if (match_string_p ("lue")) | |
5044 | { | |
5045 | /* Matched "value". */ | |
5046 | d = DECL_VALUE; | |
5047 | } | |
5048 | } | |
5049 | else if (ch == 'o') | |
5050 | { | |
5051 | if (match_string_p ("latile")) | |
5052 | { | |
5053 | /* Matched "volatile". */ | |
5054 | d = DECL_VOLATILE; | |
5055 | } | |
5056 | } | |
5057 | break; | |
c5d33754 | 5058 | } |
5059 | } | |
f3f9b222 | 5060 | |
c72e5f7e | 5061 | /* No double colon and no recognizable decl_type, so assume that |
5062 | we've been looking at something else the whole time. */ | |
5063 | if (d == DECL_NONE) | |
5064 | { | |
5065 | m = MATCH_NO; | |
5066 | goto cleanup; | |
5067 | } | |
e14bee04 | 5068 | |
7e221851 | 5069 | /* Check to make sure any parens are paired up correctly. */ |
5070 | if (gfc_match_parens () == MATCH_ERROR) | |
5071 | { | |
5072 | m = MATCH_ERROR; | |
5073 | goto cleanup; | |
5074 | } | |
5075 | ||
4ee9c684 | 5076 | seen[d]++; |
cbb9e6aa | 5077 | seen_at[d] = gfc_current_locus; |
4ee9c684 | 5078 | |
e97ac7c0 | 5079 | if (d == DECL_DIMENSION || d == DECL_CODIMENSION) |
4ee9c684 | 5080 | { |
e97ac7c0 | 5081 | gfc_array_spec *as = NULL; |
4ee9c684 | 5082 | |
e97ac7c0 | 5083 | m = gfc_match_array_spec (&as, d == DECL_DIMENSION, |
5084 | d == DECL_CODIMENSION); | |
5085 | ||
5086 | if (current_as == NULL) | |
5087 | current_as = as; | |
5088 | else if (m == MATCH_YES) | |
4ee9c684 | 5089 | { |
60e19868 | 5090 | if (!merge_array_spec (as, current_as, false)) |
9b58b4c7 | 5091 | m = MATCH_ERROR; |
434f0922 | 5092 | free (as); |
4ee9c684 | 5093 | } |
5094 | ||
aff518b0 | 5095 | if (m == MATCH_NO) |
5096 | { | |
e97ac7c0 | 5097 | if (d == DECL_CODIMENSION) |
5098 | gfc_error ("Missing codimension specification at %C"); | |
5099 | else | |
5100 | gfc_error ("Missing dimension specification at %C"); | |
aff518b0 | 5101 | m = MATCH_ERROR; |
5102 | } | |
5103 | ||
5104 | if (m == MATCH_ERROR) | |
5105 | goto cleanup; | |
5106 | } | |
4ee9c684 | 5107 | } |
5108 | ||
4ee9c684 | 5109 | /* Since we've seen a double colon, we have to be looking at an |
5110 | attr-spec. This means that we can now issue errors. */ | |
5111 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
5112 | if (seen[d] > 1) | |
5113 | { | |
5114 | switch (d) | |
5115 | { | |
5116 | case DECL_ALLOCATABLE: | |
5117 | attr = "ALLOCATABLE"; | |
5118 | break; | |
738928be | 5119 | case DECL_ASYNCHRONOUS: |
5120 | attr = "ASYNCHRONOUS"; | |
5121 | break; | |
aff518b0 | 5122 | case DECL_CODIMENSION: |
5123 | attr = "CODIMENSION"; | |
5124 | break; | |
b3c3927c | 5125 | case DECL_CONTIGUOUS: |
5126 | attr = "CONTIGUOUS"; | |
5127 | break; | |
4ee9c684 | 5128 | case DECL_DIMENSION: |
5129 | attr = "DIMENSION"; | |
5130 | break; | |
5131 | case DECL_EXTERNAL: | |
5132 | attr = "EXTERNAL"; | |
5133 | break; | |
5134 | case DECL_IN: | |
5135 | attr = "INTENT (IN)"; | |
5136 | break; | |
5137 | case DECL_OUT: | |
5138 | attr = "INTENT (OUT)"; | |
5139 | break; | |
5140 | case DECL_INOUT: | |
5141 | attr = "INTENT (IN OUT)"; | |
5142 | break; | |
5143 | case DECL_INTRINSIC: | |
5144 | attr = "INTRINSIC"; | |
5145 | break; | |
5146 | case DECL_OPTIONAL: | |
5147 | attr = "OPTIONAL"; | |
5148 | break; | |
9d958d5b | 5149 | case DECL_KIND: |
5150 | attr = "KIND"; | |
5151 | break; | |
5152 | case DECL_LEN: | |
5153 | attr = "LEN"; | |
5154 | break; | |
4ee9c684 | 5155 | case DECL_PARAMETER: |
5156 | attr = "PARAMETER"; | |
5157 | break; | |
5158 | case DECL_POINTER: | |
5159 | attr = "POINTER"; | |
5160 | break; | |
3ea52af3 | 5161 | case DECL_PROTECTED: |
5162 | attr = "PROTECTED"; | |
5163 | break; | |
4ee9c684 | 5164 | case DECL_PRIVATE: |
5165 | attr = "PRIVATE"; | |
5166 | break; | |
5167 | case DECL_PUBLIC: | |
5168 | attr = "PUBLIC"; | |
5169 | break; | |
5170 | case DECL_SAVE: | |
5171 | attr = "SAVE"; | |
5172 | break; | |
8e652fcf | 5173 | case DECL_STATIC: |
5174 | attr = "STATIC"; | |
5175 | break; | |
5176 | case DECL_AUTOMATIC: | |
5177 | attr = "AUTOMATIC"; | |
5178 | break; | |
4ee9c684 | 5179 | case DECL_TARGET: |
5180 | attr = "TARGET"; | |
5181 | break; | |
c5d33754 | 5182 | case DECL_IS_BIND_C: |
5183 | attr = "IS_BIND_C"; | |
5184 | break; | |
5185 | case DECL_VALUE: | |
5186 | attr = "VALUE"; | |
5187 | break; | |
ef814c81 | 5188 | case DECL_VOLATILE: |
5189 | attr = "VOLATILE"; | |
5190 | break; | |
4ee9c684 | 5191 | default: |
f6d0e37a | 5192 | attr = NULL; /* This shouldn't happen. */ |
4ee9c684 | 5193 | } |
5194 | ||
5195 | gfc_error ("Duplicate %s attribute at %L", attr, &seen_at[d]); | |
5196 | m = MATCH_ERROR; | |
5197 | goto cleanup; | |
5198 | } | |
5199 | ||
5200 | /* Now that we've dealt with duplicate attributes, add the attributes | |
5201 | to the current attribute. */ | |
5202 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
5203 | { | |
5204 | if (seen[d] == 0) | |
5205 | continue; | |
8ef2cf76 | 5206 | else |
5207 | attr_seen = 1; | |
4ee9c684 | 5208 | |
8e652fcf | 5209 | if ((d == DECL_STATIC || d == DECL_AUTOMATIC) |
5210 | && !flag_dec_static) | |
5211 | { | |
841da9cf | 5212 | gfc_error ("%s at %L is a DEC extension, enable with " |
5213 | "%<-fdec-static%>", | |
8e652fcf | 5214 | d == DECL_STATIC ? "STATIC" : "AUTOMATIC", &seen_at[d]); |
5215 | m = MATCH_ERROR; | |
5216 | goto cleanup; | |
5217 | } | |
5218 | /* Allow SAVE with STATIC, but don't complain. */ | |
5219 | if (d == DECL_STATIC && seen[DECL_SAVE]) | |
5220 | continue; | |
5221 | ||
4ee9c684 | 5222 | if (gfc_current_state () == COMP_DERIVED |
aff518b0 | 5223 | && d != DECL_DIMENSION && d != DECL_CODIMENSION |
5224 | && d != DECL_POINTER && d != DECL_PRIVATE | |
b3c3927c | 5225 | && d != DECL_PUBLIC && d != DECL_CONTIGUOUS && d != DECL_NONE) |
4ee9c684 | 5226 | { |
2294b616 | 5227 | if (d == DECL_ALLOCATABLE) |
5228 | { | |
60e19868 | 5229 | if (!gfc_notify_std (GFC_STD_F2003, "ALLOCATABLE " |
5230 | "attribute at %C in a TYPE definition")) | |
2294b616 | 5231 | { |
5232 | m = MATCH_ERROR; | |
5233 | goto cleanup; | |
5234 | } | |
1a9745d2 | 5235 | } |
9d958d5b | 5236 | else if (d == DECL_KIND) |
5237 | { | |
5238 | if (!gfc_notify_std (GFC_STD_F2003, "KIND " | |
5239 | "attribute at %C in a TYPE definition")) | |
5240 | { | |
5241 | m = MATCH_ERROR; | |
5242 | goto cleanup; | |
5243 | } | |
5244 | if (current_ts.type != BT_INTEGER) | |
5245 | { | |
5246 | gfc_error ("Component with KIND attribute at %C must be " | |
5247 | "INTEGER"); | |
5248 | m = MATCH_ERROR; | |
5249 | goto cleanup; | |
5250 | } | |
5251 | if (current_ts.kind != gfc_default_integer_kind) | |
5252 | { | |
5253 | gfc_error ("Component with KIND attribute at %C must be " | |
5254 | "default integer kind (%d)", | |
5255 | gfc_default_integer_kind); | |
5256 | m = MATCH_ERROR; | |
5257 | goto cleanup; | |
5258 | } | |
5259 | } | |
5260 | else if (d == DECL_LEN) | |
5261 | { | |
5262 | if (!gfc_notify_std (GFC_STD_F2003, "LEN " | |
5263 | "attribute at %C in a TYPE definition")) | |
5264 | { | |
5265 | m = MATCH_ERROR; | |
5266 | goto cleanup; | |
5267 | } | |
5268 | if (current_ts.type != BT_INTEGER) | |
5269 | { | |
5270 | gfc_error ("Component with LEN attribute at %C must be " | |
5271 | "INTEGER"); | |
5272 | m = MATCH_ERROR; | |
5273 | goto cleanup; | |
5274 | } | |
5275 | if (current_ts.kind != gfc_default_integer_kind) | |
5276 | { | |
5277 | gfc_error ("Component with LEN attribute at %C must be " | |
5278 | "default integer kind (%d)", | |
5279 | gfc_default_integer_kind); | |
5280 | m = MATCH_ERROR; | |
5281 | goto cleanup; | |
5282 | } | |
5283 | } | |
1a9745d2 | 5284 | else |
2294b616 | 5285 | { |
5286 | gfc_error ("Attribute at %L is not allowed in a TYPE definition", | |
e14bee04 | 5287 | &seen_at[d]); |
2294b616 | 5288 | m = MATCH_ERROR; |
5289 | goto cleanup; | |
5290 | } | |
4ee9c684 | 5291 | } |
5292 | ||
ea13b9b7 | 5293 | if ((d == DECL_PRIVATE || d == DECL_PUBLIC) |
1a9745d2 | 5294 | && gfc_current_state () != COMP_MODULE) |
ea13b9b7 | 5295 | { |
5296 | if (d == DECL_PRIVATE) | |
5297 | attr = "PRIVATE"; | |
5298 | else | |
5299 | attr = "PUBLIC"; | |
e14bee04 | 5300 | if (gfc_current_state () == COMP_DERIVED |
5301 | && gfc_state_stack->previous | |
5302 | && gfc_state_stack->previous->state == COMP_MODULE) | |
5303 | { | |
60e19868 | 5304 | if (!gfc_notify_std (GFC_STD_F2003, "Attribute %s " |
76e207a9 | 5305 | "at %L in a TYPE definition", attr, |
60e19868 | 5306 | &seen_at[d])) |
e14bee04 | 5307 | { |
5308 | m = MATCH_ERROR; | |
5309 | goto cleanup; | |
5310 | } | |
5311 | } | |
5312 | else | |
5313 | { | |
5314 | gfc_error ("%s attribute at %L is not allowed outside of the " | |
5315 | "specification part of a module", attr, &seen_at[d]); | |
5316 | m = MATCH_ERROR; | |
5317 | goto cleanup; | |
5318 | } | |
ea13b9b7 | 5319 | } |
5320 | ||
9d958d5b | 5321 | if (gfc_current_state () != COMP_DERIVED |
5322 | && (d == DECL_KIND || d == DECL_LEN)) | |
5323 | { | |
5324 | gfc_error ("Attribute at %L is not allowed outside a TYPE " | |
5325 | "definition", &seen_at[d]); | |
5326 | m = MATCH_ERROR; | |
5327 | goto cleanup; | |
5328 | } | |
5329 | ||
4ee9c684 | 5330 | switch (d) |
5331 | { | |
5332 | case DECL_ALLOCATABLE: | |
5333 | t = gfc_add_allocatable (¤t_attr, &seen_at[d]); | |
5334 | break; | |
5335 | ||
738928be | 5336 | case DECL_ASYNCHRONOUS: |
60e19868 | 5337 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS attribute at %C")) |
5338 | t = false; | |
738928be | 5339 | else |
5340 | t = gfc_add_asynchronous (¤t_attr, NULL, &seen_at[d]); | |
5341 | break; | |
5342 | ||
aff518b0 | 5343 | case DECL_CODIMENSION: |
5344 | t = gfc_add_codimension (¤t_attr, NULL, &seen_at[d]); | |
5345 | break; | |
5346 | ||
b3c3927c | 5347 | case DECL_CONTIGUOUS: |
60e19868 | 5348 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS attribute at %C")) |
5349 | t = false; | |
b3c3927c | 5350 | else |
5351 | t = gfc_add_contiguous (¤t_attr, NULL, &seen_at[d]); | |
5352 | break; | |
5353 | ||
4ee9c684 | 5354 | case DECL_DIMENSION: |
950683ed | 5355 | t = gfc_add_dimension (¤t_attr, NULL, &seen_at[d]); |
4ee9c684 | 5356 | break; |
5357 | ||
5358 | case DECL_EXTERNAL: | |
5359 | t = gfc_add_external (¤t_attr, &seen_at[d]); | |
5360 | break; | |
5361 | ||
5362 | case DECL_IN: | |
5363 | t = gfc_add_intent (¤t_attr, INTENT_IN, &seen_at[d]); | |
5364 | break; | |
5365 | ||
5366 | case DECL_OUT: | |
5367 | t = gfc_add_intent (¤t_attr, INTENT_OUT, &seen_at[d]); | |
5368 | break; | |
5369 | ||
5370 | case DECL_INOUT: | |
5371 | t = gfc_add_intent (¤t_attr, INTENT_INOUT, &seen_at[d]); | |
5372 | break; | |
5373 | ||
5374 | case DECL_INTRINSIC: | |
5375 | t = gfc_add_intrinsic (¤t_attr, &seen_at[d]); | |
5376 | break; | |
5377 | ||
5378 | case DECL_OPTIONAL: | |
5379 | t = gfc_add_optional (¤t_attr, &seen_at[d]); | |
5380 | break; | |
5381 | ||
9d958d5b | 5382 | case DECL_KIND: |
5383 | t = gfc_add_kind (¤t_attr, &seen_at[d]); | |
5384 | break; | |
5385 | ||
5386 | case DECL_LEN: | |
5387 | t = gfc_add_len (¤t_attr, &seen_at[d]); | |
5388 | break; | |
5389 | ||
4ee9c684 | 5390 | case DECL_PARAMETER: |
950683ed | 5391 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, &seen_at[d]); |
4ee9c684 | 5392 | break; |
5393 | ||
5394 | case DECL_POINTER: | |
5395 | t = gfc_add_pointer (¤t_attr, &seen_at[d]); | |
5396 | break; | |
5397 | ||
3ea52af3 | 5398 | case DECL_PROTECTED: |
8371b2e9 | 5399 | if (gfc_current_state () != COMP_MODULE |
5400 | || (gfc_current_ns->proc_name | |
5401 | && gfc_current_ns->proc_name->attr.flavor != FL_MODULE)) | |
3ea52af3 | 5402 | { |
5403 | gfc_error ("PROTECTED at %C only allowed in specification " | |
5404 | "part of a module"); | |
60e19868 | 5405 | t = false; |
3ea52af3 | 5406 | break; |
5407 | } | |
5408 | ||
60e19868 | 5409 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED attribute at %C")) |
5410 | t = false; | |
3ea52af3 | 5411 | else |
5412 | t = gfc_add_protected (¤t_attr, NULL, &seen_at[d]); | |
5413 | break; | |
5414 | ||
4ee9c684 | 5415 | case DECL_PRIVATE: |
950683ed | 5416 | t = gfc_add_access (¤t_attr, ACCESS_PRIVATE, NULL, |
5417 | &seen_at[d]); | |
4ee9c684 | 5418 | break; |
5419 | ||
5420 | case DECL_PUBLIC: | |
950683ed | 5421 | t = gfc_add_access (¤t_attr, ACCESS_PUBLIC, NULL, |
5422 | &seen_at[d]); | |
4ee9c684 | 5423 | break; |
5424 | ||
8e652fcf | 5425 | case DECL_STATIC: |
4ee9c684 | 5426 | case DECL_SAVE: |
23d075f4 | 5427 | t = gfc_add_save (¤t_attr, SAVE_EXPLICIT, NULL, &seen_at[d]); |
4ee9c684 | 5428 | break; |
5429 | ||
8e652fcf | 5430 | case DECL_AUTOMATIC: |
5431 | t = gfc_add_automatic (¤t_attr, NULL, &seen_at[d]); | |
5432 | break; | |
5433 | ||
4ee9c684 | 5434 | case DECL_TARGET: |
5435 | t = gfc_add_target (¤t_attr, &seen_at[d]); | |
5436 | break; | |
5437 | ||
c5d33754 | 5438 | case DECL_IS_BIND_C: |
5439 | t = gfc_add_is_bind_c(¤t_attr, NULL, &seen_at[d], 0); | |
5440 | break; | |
8db94b3b | 5441 | |
8f6339b6 | 5442 | case DECL_VALUE: |
60e19868 | 5443 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE attribute at %C")) |
5444 | t = false; | |
8f6339b6 | 5445 | else |
5446 | t = gfc_add_value (¤t_attr, NULL, &seen_at[d]); | |
5447 | break; | |
5448 | ||
ef814c81 | 5449 | case DECL_VOLATILE: |
60e19868 | 5450 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE attribute at %C")) |
5451 | t = false; | |
ef814c81 | 5452 | else |
5453 | t = gfc_add_volatile (¤t_attr, NULL, &seen_at[d]); | |
5454 | break; | |
5455 | ||
4ee9c684 | 5456 | default: |
5457 | gfc_internal_error ("match_attr_spec(): Bad attribute"); | |
5458 | } | |
5459 | ||
60e19868 | 5460 | if (!t) |
4ee9c684 | 5461 | { |
5462 | m = MATCH_ERROR; | |
5463 | goto cleanup; | |
5464 | } | |
5465 | } | |
5466 | ||
c25834c9 | 5467 | /* Since Fortran 2008 module variables implicitly have the SAVE attribute. */ |
4b8eb6ca | 5468 | if ((gfc_current_state () == COMP_MODULE |
5469 | || gfc_current_state () == COMP_SUBMODULE) | |
5470 | && !current_attr.save | |
c25834c9 | 5471 | && (gfc_option.allow_std & GFC_STD_F2008) != 0) |
23d075f4 | 5472 | current_attr.save = SAVE_IMPLICIT; |
5473 | ||
4ee9c684 | 5474 | colon_seen = 1; |
5475 | return MATCH_YES; | |
5476 | ||
5477 | cleanup: | |
cbb9e6aa | 5478 | gfc_current_locus = start; |
4ee9c684 | 5479 | gfc_free_array_spec (current_as); |
5480 | current_as = NULL; | |
8ef2cf76 | 5481 | attr_seen = 0; |
4ee9c684 | 5482 | return m; |
5483 | } | |
5484 | ||
5485 | ||
c5d33754 | 5486 | /* Set the binding label, dest_label, either with the binding label |
5487 | stored in the given gfc_typespec, ts, or if none was provided, it | |
5488 | will be the symbol name in all lower case, as required by the draft | |
5489 | (J3/04-007, section 15.4.1). If a binding label was given and | |
5490 | there is more than one argument (num_idents), it is an error. */ | |
5491 | ||
60e19868 | 5492 | static bool |
8db94b3b | 5493 | set_binding_label (const char **dest_label, const char *sym_name, |
1d8a57d8 | 5494 | int num_idents) |
c5d33754 | 5495 | { |
825718f9 | 5496 | if (num_idents > 1 && has_name_equals) |
c5d33754 | 5497 | { |
825718f9 | 5498 | gfc_error ("Multiple identifiers provided with " |
5499 | "single NAME= specifier at %C"); | |
60e19868 | 5500 | return false; |
825718f9 | 5501 | } |
c5d33754 | 5502 | |
7b2060ba | 5503 | if (curr_binding_label) |
df084314 | 5504 | /* Binding label given; store in temp holder till have sym. */ |
7b2060ba | 5505 | *dest_label = curr_binding_label; |
c5d33754 | 5506 | else |
5507 | { | |
5508 | /* No binding label given, and the NAME= specifier did not exist, | |
5509 | which means there was no NAME="". */ | |
5510 | if (sym_name != NULL && has_name_equals == 0) | |
7b2060ba | 5511 | *dest_label = IDENTIFIER_POINTER (get_identifier (sym_name)); |
c5d33754 | 5512 | } |
8db94b3b | 5513 | |
60e19868 | 5514 | return true; |
c5d33754 | 5515 | } |
5516 | ||
5517 | ||
5518 | /* Set the status of the given common block as being BIND(C) or not, | |
5519 | depending on the given parameter, is_bind_c. */ | |
5520 | ||
5521 | void | |
5522 | set_com_block_bind_c (gfc_common_head *com_block, int is_bind_c) | |
5523 | { | |
5524 | com_block->is_bind_c = is_bind_c; | |
5525 | return; | |
5526 | } | |
5527 | ||
5528 | ||
5529 | /* Verify that the given gfc_typespec is for a C interoperable type. */ | |
5530 | ||
60e19868 | 5531 | bool |
2564c57a | 5532 | gfc_verify_c_interop (gfc_typespec *ts) |
c5d33754 | 5533 | { |
eeebe20b | 5534 | if (ts->type == BT_DERIVED && ts->u.derived != NULL) |
5f9b1308 | 5535 | return (ts->u.derived->ts.is_c_interop || ts->u.derived->attr.is_bind_c) |
60e19868 | 5536 | ? true : false; |
2564c57a | 5537 | else if (ts->type == BT_CLASS) |
60e19868 | 5538 | return false; |
8c2d8d6d | 5539 | else if (ts->is_c_interop != 1 && ts->type != BT_ASSUMED) |
60e19868 | 5540 | return false; |
8c2d8d6d | 5541 | |
60e19868 | 5542 | return true; |
c5d33754 | 5543 | } |
5544 | ||
5545 | ||
5546 | /* Verify that the variables of a given common block, which has been | |
5547 | defined with the attribute specifier bind(c), to be of a C | |
5548 | interoperable type. Errors will be reported here, if | |
5549 | encountered. */ | |
5550 | ||
60e19868 | 5551 | bool |
c5d33754 | 5552 | verify_com_block_vars_c_interop (gfc_common_head *com_block) |
5553 | { | |
5554 | gfc_symbol *curr_sym = NULL; | |
60e19868 | 5555 | bool retval = true; |
c5d33754 | 5556 | |
5557 | curr_sym = com_block->head; | |
8db94b3b | 5558 | |
c5d33754 | 5559 | /* Make sure we have at least one symbol. */ |
5560 | if (curr_sym == NULL) | |
5561 | return retval; | |
5562 | ||
5563 | /* Here we know we have a symbol, so we'll execute this loop | |
5564 | at least once. */ | |
5565 | do | |
5566 | { | |
5567 | /* The second to last param, 1, says this is in a common block. */ | |
5568 | retval = verify_bind_c_sym (curr_sym, &(curr_sym->ts), 1, com_block); | |
5569 | curr_sym = curr_sym->common_next; | |
8db94b3b | 5570 | } while (curr_sym != NULL); |
c5d33754 | 5571 | |
5572 | return retval; | |
5573 | } | |
5574 | ||
5575 | ||
5576 | /* Verify that a given BIND(C) symbol is C interoperable. If it is not, | |
5577 | an appropriate error message is reported. */ | |
5578 | ||
60e19868 | 5579 | bool |
c5d33754 | 5580 | verify_bind_c_sym (gfc_symbol *tmp_sym, gfc_typespec *ts, |
5581 | int is_in_common, gfc_common_head *com_block) | |
5582 | { | |
1f2ab120 | 5583 | bool bind_c_function = false; |
60e19868 | 5584 | bool retval = true; |
4f7bb9ec | 5585 | |
1f2ab120 | 5586 | if (tmp_sym->attr.function && tmp_sym->attr.is_bind_c) |
5587 | bind_c_function = true; | |
5588 | ||
4f7bb9ec | 5589 | if (tmp_sym->attr.function && tmp_sym->result != NULL) |
5590 | { | |
5591 | tmp_sym = tmp_sym->result; | |
5592 | /* Make sure it wasn't an implicitly typed result. */ | |
bf79c656 | 5593 | if (tmp_sym->attr.implicit_type && warn_c_binding_type) |
4f7bb9ec | 5594 | { |
4166acc7 | 5595 | gfc_warning (OPT_Wc_binding_type, |
5596 | "Implicitly declared BIND(C) function %qs at " | |
4f7bb9ec | 5597 | "%L may not be C interoperable", tmp_sym->name, |
5598 | &tmp_sym->declared_at); | |
5599 | tmp_sym->ts.f90_type = tmp_sym->ts.type; | |
5600 | /* Mark it as C interoperable to prevent duplicate warnings. */ | |
5601 | tmp_sym->ts.is_c_interop = 1; | |
5602 | tmp_sym->attr.is_c_interop = 1; | |
5603 | } | |
5604 | } | |
1f2ab120 | 5605 | |
c5d33754 | 5606 | /* Here, we know we have the bind(c) attribute, so if we have |
5607 | enough type info, then verify that it's a C interop kind. | |
5608 | The info could be in the symbol already, or possibly still in | |
5609 | the given ts (current_ts), so look in both. */ | |
8db94b3b | 5610 | if (tmp_sym->ts.type != BT_UNKNOWN || ts->type != BT_UNKNOWN) |
c5d33754 | 5611 | { |
60e19868 | 5612 | if (!gfc_verify_c_interop (&(tmp_sym->ts))) |
c5d33754 | 5613 | { |
5614 | /* See if we're dealing with a sym in a common block or not. */ | |
bf79c656 | 5615 | if (is_in_common == 1 && warn_c_binding_type) |
c5d33754 | 5616 | { |
4166acc7 | 5617 | gfc_warning (OPT_Wc_binding_type, |
5618 | "Variable %qs in common block %qs at %L " | |
c5d33754 | 5619 | "may not be a C interoperable " |
4166acc7 | 5620 | "kind though common block %qs is BIND(C)", |
c5d33754 | 5621 | tmp_sym->name, com_block->name, |
5622 | &(tmp_sym->declared_at), com_block->name); | |
5623 | } | |
5624 | else | |
5625 | { | |
5626 | if (tmp_sym->ts.type == BT_DERIVED || ts->type == BT_DERIVED) | |
716da296 | 5627 | gfc_error ("Type declaration %qs at %L is not C " |
c5d33754 | 5628 | "interoperable but it is BIND(C)", |
5629 | tmp_sym->name, &(tmp_sym->declared_at)); | |
bf79c656 | 5630 | else if (warn_c_binding_type) |
4166acc7 | 5631 | gfc_warning (OPT_Wc_binding_type, "Variable %qs at %L " |
c5d33754 | 5632 | "may not be a C interoperable " |
716da296 | 5633 | "kind but it is BIND(C)", |
c5d33754 | 5634 | tmp_sym->name, &(tmp_sym->declared_at)); |
5635 | } | |
5636 | } | |
8db94b3b | 5637 | |
c5d33754 | 5638 | /* Variables declared w/in a common block can't be bind(c) |
5639 | since there's no way for C to see these variables, so there's | |
5640 | semantically no reason for the attribute. */ | |
5641 | if (is_in_common == 1 && tmp_sym->attr.is_bind_c == 1) | |
5642 | { | |
716da296 | 5643 | gfc_error ("Variable %qs in common block %qs at " |
c5d33754 | 5644 | "%L cannot be declared with BIND(C) " |
5645 | "since it is not a global", | |
5646 | tmp_sym->name, com_block->name, | |
5647 | &(tmp_sym->declared_at)); | |
60e19868 | 5648 | retval = false; |
c5d33754 | 5649 | } |
8db94b3b | 5650 | |
c5d33754 | 5651 | /* Scalar variables that are bind(c) can not have the pointer |
5652 | or allocatable attributes. */ | |
5653 | if (tmp_sym->attr.is_bind_c == 1) | |
5654 | { | |
5655 | if (tmp_sym->attr.pointer == 1) | |
5656 | { | |
716da296 | 5657 | gfc_error ("Variable %qs at %L cannot have both the " |
c5d33754 | 5658 | "POINTER and BIND(C) attributes", |
5659 | tmp_sym->name, &(tmp_sym->declared_at)); | |
60e19868 | 5660 | retval = false; |
c5d33754 | 5661 | } |
5662 | ||
5663 | if (tmp_sym->attr.allocatable == 1) | |
5664 | { | |
716da296 | 5665 | gfc_error ("Variable %qs at %L cannot have both the " |
c5d33754 | 5666 | "ALLOCATABLE and BIND(C) attributes", |
5667 | tmp_sym->name, &(tmp_sym->declared_at)); | |
60e19868 | 5668 | retval = false; |
c5d33754 | 5669 | } |
5670 | ||
1f2ab120 | 5671 | } |
5672 | ||
5673 | /* If it is a BIND(C) function, make sure the return value is a | |
5674 | scalar value. The previous tests in this function made sure | |
5675 | the type is interoperable. */ | |
5676 | if (bind_c_function && tmp_sym->as != NULL) | |
716da296 | 5677 | gfc_error ("Return type of BIND(C) function %qs at %L cannot " |
1f2ab120 | 5678 | "be an array", tmp_sym->name, &(tmp_sym->declared_at)); |
5679 | ||
5680 | /* BIND(C) functions can not return a character string. */ | |
5681 | if (bind_c_function && tmp_sym->ts.type == BT_CHARACTER) | |
eeebe20b | 5682 | if (tmp_sym->ts.u.cl == NULL || tmp_sym->ts.u.cl->length == NULL |
5683 | || tmp_sym->ts.u.cl->length->expr_type != EXPR_CONSTANT | |
5684 | || mpz_cmp_si (tmp_sym->ts.u.cl->length->value.integer, 1) != 0) | |
f6c28593 | 5685 | gfc_error ("Return type of BIND(C) function %qs of character " |
c014d57d | 5686 | "type at %L must have length 1", tmp_sym->name, |
c5d33754 | 5687 | &(tmp_sym->declared_at)); |
c5d33754 | 5688 | } |
5689 | ||
5690 | /* See if the symbol has been marked as private. If it has, make sure | |
5691 | there is no binding label and warn the user if there is one. */ | |
5692 | if (tmp_sym->attr.access == ACCESS_PRIVATE | |
7b2060ba | 5693 | && tmp_sym->binding_label) |
c5d33754 | 5694 | /* Use gfc_warning_now because we won't say that the symbol fails |
5695 | just because of this. */ | |
6f521718 | 5696 | gfc_warning_now (0, "Symbol %qs at %L is marked PRIVATE but has been " |
bf79c656 | 5697 | "given the binding label %qs", tmp_sym->name, |
c5d33754 | 5698 | &(tmp_sym->declared_at), tmp_sym->binding_label); |
5699 | ||
5700 | return retval; | |
5701 | } | |
5702 | ||
5703 | ||
5704 | /* Set the appropriate fields for a symbol that's been declared as | |
5705 | BIND(C) (the is_bind_c flag and the binding label), and verify that | |
5706 | the type is C interoperable. Errors are reported by the functions | |
5707 | used to set/test these fields. */ | |
5708 | ||
60e19868 | 5709 | bool |
c5d33754 | 5710 | set_verify_bind_c_sym (gfc_symbol *tmp_sym, int num_idents) |
5711 | { | |
60e19868 | 5712 | bool retval = true; |
8db94b3b | 5713 | |
c5d33754 | 5714 | /* TODO: Do we need to make sure the vars aren't marked private? */ |
5715 | ||
5716 | /* Set the is_bind_c bit in symbol_attribute. */ | |
5717 | gfc_add_is_bind_c (&(tmp_sym->attr), tmp_sym->name, &gfc_current_locus, 0); | |
5718 | ||
60e19868 | 5719 | if (!set_binding_label (&tmp_sym->binding_label, tmp_sym->name, num_idents)) |
5720 | return false; | |
c5d33754 | 5721 | |
5722 | return retval; | |
5723 | } | |
5724 | ||
5725 | ||
5726 | /* Set the fields marking the given common block as BIND(C), including | |
5727 | a binding label, and report any errors encountered. */ | |
5728 | ||
60e19868 | 5729 | bool |
c5d33754 | 5730 | set_verify_bind_c_com_block (gfc_common_head *com_block, int num_idents) |
5731 | { | |
60e19868 | 5732 | bool retval = true; |
8db94b3b | 5733 | |
c5d33754 | 5734 | /* destLabel, common name, typespec (which may have binding label). */ |
76e207a9 | 5735 | if (!set_binding_label (&com_block->binding_label, com_block->name, |
60e19868 | 5736 | num_idents)) |
5737 | return false; | |
c5d33754 | 5738 | |
5739 | /* Set the given common block (com_block) to being bind(c) (1). */ | |
5740 | set_com_block_bind_c (com_block, 1); | |
5741 | ||
5742 | return retval; | |
5743 | } | |
5744 | ||
5745 | ||
5746 | /* Retrieve the list of one or more identifiers that the given bind(c) | |
5747 | attribute applies to. */ | |
5748 | ||
60e19868 | 5749 | bool |
c5d33754 | 5750 | get_bind_c_idents (void) |
5751 | { | |
5752 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5753 | int num_idents = 0; | |
5754 | gfc_symbol *tmp_sym = NULL; | |
5755 | match found_id; | |
5756 | gfc_common_head *com_block = NULL; | |
8db94b3b | 5757 | |
c5d33754 | 5758 | if (gfc_match_name (name) == MATCH_YES) |
5759 | { | |
5760 | found_id = MATCH_YES; | |
5761 | gfc_get_ha_symbol (name, &tmp_sym); | |
5762 | } | |
5763 | else if (match_common_name (name) == MATCH_YES) | |
5764 | { | |
5765 | found_id = MATCH_YES; | |
5766 | com_block = gfc_get_common (name, 0); | |
5767 | } | |
5768 | else | |
5769 | { | |
5770 | gfc_error ("Need either entity or common block name for " | |
5771 | "attribute specification statement at %C"); | |
60e19868 | 5772 | return false; |
c5d33754 | 5773 | } |
8db94b3b | 5774 | |
c5d33754 | 5775 | /* Save the current identifier and look for more. */ |
5776 | do | |
5777 | { | |
5778 | /* Increment the number of identifiers found for this spec stmt. */ | |
5779 | num_idents++; | |
5780 | ||
5781 | /* Make sure we have a sym or com block, and verify that it can | |
5782 | be bind(c). Set the appropriate field(s) and look for more | |
5783 | identifiers. */ | |
8db94b3b | 5784 | if (tmp_sym != NULL || com_block != NULL) |
c5d33754 | 5785 | { |
5786 | if (tmp_sym != NULL) | |
5787 | { | |
60e19868 | 5788 | if (!set_verify_bind_c_sym (tmp_sym, num_idents)) |
5789 | return false; | |
c5d33754 | 5790 | } |
5791 | else | |
5792 | { | |
60e19868 | 5793 | if (!set_verify_bind_c_com_block (com_block, num_idents)) |
5794 | return false; | |
c5d33754 | 5795 | } |
8db94b3b | 5796 | |
c5d33754 | 5797 | /* Look to see if we have another identifier. */ |
5798 | tmp_sym = NULL; | |
5799 | if (gfc_match_eos () == MATCH_YES) | |
5800 | found_id = MATCH_NO; | |
5801 | else if (gfc_match_char (',') != MATCH_YES) | |
5802 | found_id = MATCH_NO; | |
5803 | else if (gfc_match_name (name) == MATCH_YES) | |
5804 | { | |
5805 | found_id = MATCH_YES; | |
5806 | gfc_get_ha_symbol (name, &tmp_sym); | |
5807 | } | |
5808 | else if (match_common_name (name) == MATCH_YES) | |
5809 | { | |
5810 | found_id = MATCH_YES; | |
5811 | com_block = gfc_get_common (name, 0); | |
5812 | } | |
5813 | else | |
5814 | { | |
5815 | gfc_error ("Missing entity or common block name for " | |
5816 | "attribute specification statement at %C"); | |
60e19868 | 5817 | return false; |
c5d33754 | 5818 | } |
5819 | } | |
5820 | else | |
5821 | { | |
5822 | gfc_internal_error ("Missing symbol"); | |
5823 | } | |
5824 | } while (found_id == MATCH_YES); | |
5825 | ||
5826 | /* if we get here we were successful */ | |
60e19868 | 5827 | return true; |
c5d33754 | 5828 | } |
5829 | ||
5830 | ||
5831 | /* Try and match a BIND(C) attribute specification statement. */ | |
8db94b3b | 5832 | |
c5d33754 | 5833 | match |
5834 | gfc_match_bind_c_stmt (void) | |
5835 | { | |
5836 | match found_match = MATCH_NO; | |
5837 | gfc_typespec *ts; | |
5838 | ||
5839 | ts = ¤t_ts; | |
8db94b3b | 5840 | |
c5d33754 | 5841 | /* This may not be necessary. */ |
5842 | gfc_clear_ts (ts); | |
5843 | /* Clear the temporary binding label holder. */ | |
7b2060ba | 5844 | curr_binding_label = NULL; |
c5d33754 | 5845 | |
5846 | /* Look for the bind(c). */ | |
75ae7f6c | 5847 | found_match = gfc_match_bind_c (NULL, true); |
c5d33754 | 5848 | |
5849 | if (found_match == MATCH_YES) | |
5850 | { | |
7a914593 | 5851 | if (!gfc_notify_std (GFC_STD_F2003, "BIND(C) statement at %C")) |
5852 | return MATCH_ERROR; | |
5853 | ||
c5d33754 | 5854 | /* Look for the :: now, but it is not required. */ |
5855 | gfc_match (" :: "); | |
5856 | ||
5857 | /* Get the identifier(s) that needs to be updated. This may need to | |
5858 | change to hand the flag(s) for the attr specified so all identifiers | |
5859 | found can have all appropriate parts updated (assuming that the same | |
5860 | spec stmt can have multiple attrs, such as both bind(c) and | |
5861 | allocatable...). */ | |
60e19868 | 5862 | if (!get_bind_c_idents ()) |
c5d33754 | 5863 | /* Error message should have printed already. */ |
5864 | return MATCH_ERROR; | |
5865 | } | |
5866 | ||
5867 | return found_match; | |
5868 | } | |
5869 | ||
5870 | ||
4ee9c684 | 5871 | /* Match a data declaration statement. */ |
5872 | ||
5873 | match | |
5874 | gfc_match_data_decl (void) | |
5875 | { | |
5876 | gfc_symbol *sym; | |
5877 | match m; | |
3923b69f | 5878 | int elem; |
4ee9c684 | 5879 | |
9d958d5b | 5880 | type_param_spec_list = NULL; |
5881 | decl_type_param_list = NULL; | |
5882 | ||
c5d33754 | 5883 | num_idents_on_line = 0; |
8db94b3b | 5884 | |
e8152f13 | 5885 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
4ee9c684 | 5886 | if (m != MATCH_YES) |
5887 | return m; | |
5888 | ||
b3704193 | 5889 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
d7cd448a | 5890 | && !gfc_comp_struct (gfc_current_state ())) |
4ee9c684 | 5891 | { |
eeebe20b | 5892 | sym = gfc_use_derived (current_ts.u.derived); |
4ee9c684 | 5893 | |
5894 | if (sym == NULL) | |
5895 | { | |
5896 | m = MATCH_ERROR; | |
5897 | goto cleanup; | |
5898 | } | |
5899 | ||
eeebe20b | 5900 | current_ts.u.derived = sym; |
4ee9c684 | 5901 | } |
5902 | ||
5903 | m = match_attr_spec (); | |
5904 | if (m == MATCH_ERROR) | |
5905 | { | |
5906 | m = MATCH_NO; | |
5907 | goto cleanup; | |
5908 | } | |
5909 | ||
a90fe829 | 5910 | if (current_ts.type == BT_CLASS |
5911 | && current_ts.u.derived->attr.unlimited_polymorphic) | |
5912 | goto ok; | |
5913 | ||
b3704193 | 5914 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
5915 | && current_ts.u.derived->components == NULL | |
eeebe20b | 5916 | && !current_ts.u.derived->attr.zero_comp) |
4ee9c684 | 5917 | { |
5918 | ||
d7cd448a | 5919 | if (current_attr.pointer && gfc_comp_struct (gfc_current_state ())) |
4ee9c684 | 5920 | goto ok; |
5921 | ||
2fbfb5cf | 5922 | if (current_attr.allocatable && gfc_current_state () == COMP_DERIVED) |
dd7553fe | 5923 | goto ok; |
5924 | ||
eeebe20b | 5925 | gfc_find_symbol (current_ts.u.derived->name, |
d67dd34f | 5926 | current_ts.u.derived->ns, 1, &sym); |
4ee9c684 | 5927 | |
40cf8078 | 5928 | /* Any symbol that we find had better be a type definition |
d7cd448a | 5929 | which has its components defined, or be a structure definition |
5930 | actively being parsed. */ | |
5931 | if (sym != NULL && gfc_fl_struct (sym->attr.flavor) | |
eeebe20b | 5932 | && (current_ts.u.derived->components != NULL |
d7cd448a | 5933 | || current_ts.u.derived->attr.zero_comp |
5934 | || current_ts.u.derived == gfc_new_block)) | |
4ee9c684 | 5935 | goto ok; |
5936 | ||
a1e76cd9 | 5937 | gfc_error ("Derived type at %C has not been previously defined " |
5938 | "and so cannot appear in a derived type definition"); | |
5939 | m = MATCH_ERROR; | |
5940 | goto cleanup; | |
4ee9c684 | 5941 | } |
5942 | ||
5943 | ok: | |
5944 | /* If we have an old-style character declaration, and no new-style | |
5945 | attribute specifications, then there a comma is optional between | |
5946 | the type specification and the variable list. */ | |
5947 | if (m == MATCH_NO && current_ts.type == BT_CHARACTER && old_char_selector) | |
5948 | gfc_match_char (','); | |
5949 | ||
3923b69f | 5950 | /* Give the types/attributes to symbols that follow. Give the element |
5951 | a number so that repeat character length expressions can be copied. */ | |
5952 | elem = 1; | |
4ee9c684 | 5953 | for (;;) |
5954 | { | |
c5d33754 | 5955 | num_idents_on_line++; |
3923b69f | 5956 | m = variable_decl (elem++); |
4ee9c684 | 5957 | if (m == MATCH_ERROR) |
5958 | goto cleanup; | |
5959 | if (m == MATCH_NO) | |
5960 | break; | |
5961 | ||
5962 | if (gfc_match_eos () == MATCH_YES) | |
5963 | goto cleanup; | |
5964 | if (gfc_match_char (',') != MATCH_YES) | |
5965 | break; | |
5966 | } | |
5967 | ||
389e3a5e | 5968 | if (!gfc_error_flag_test ()) |
c717a688 | 5969 | { |
5970 | /* An anonymous structure declaration is unambiguous; if we matched one | |
5971 | according to gfc_match_structure_decl, we need to return MATCH_YES | |
5972 | here to avoid confusing the remaining matchers, even if there was an | |
5973 | error during variable_decl. We must flush any such errors. Note this | |
5974 | causes the parser to gracefully continue parsing the remaining input | |
5975 | as a structure body, which likely follows. */ | |
5976 | if (current_ts.type == BT_DERIVED && current_ts.u.derived | |
5977 | && gfc_fl_struct (current_ts.u.derived->attr.flavor)) | |
5978 | { | |
5979 | gfc_error_now ("Syntax error in anonymous structure declaration" | |
5980 | " at %C"); | |
5981 | /* Skip the bad variable_decl and line up for the start of the | |
5982 | structure body. */ | |
5983 | gfc_error_recovery (); | |
5984 | m = MATCH_YES; | |
5985 | goto cleanup; | |
5986 | } | |
5987 | ||
5988 | gfc_error ("Syntax error in data declaration at %C"); | |
5989 | } | |
5990 | ||
4ee9c684 | 5991 | m = MATCH_ERROR; |
5992 | ||
af29c1f0 | 5993 | gfc_free_data_all (gfc_current_ns); |
5994 | ||
4ee9c684 | 5995 | cleanup: |
9d958d5b | 5996 | if (saved_kind_expr) |
5997 | gfc_free_expr (saved_kind_expr); | |
5998 | if (type_param_spec_list) | |
5999 | gfc_free_actual_arglist (type_param_spec_list); | |
6000 | if (decl_type_param_list) | |
6001 | gfc_free_actual_arglist (decl_type_param_list); | |
6002 | saved_kind_expr = NULL; | |
4ee9c684 | 6003 | gfc_free_array_spec (current_as); |
6004 | current_as = NULL; | |
6005 | return m; | |
6006 | } | |
6007 | ||
6008 | ||
6009 | /* Match a prefix associated with a function or subroutine | |
6010 | declaration. If the typespec pointer is nonnull, then a typespec | |
6011 | can be matched. Note that if nothing matches, MATCH_YES is | |
6012 | returned (the null string was matched). */ | |
6013 | ||
077932f9 | 6014 | match |
6015 | gfc_match_prefix (gfc_typespec *ts) | |
4ee9c684 | 6016 | { |
5b11d932 | 6017 | bool seen_type; |
4e4ea00b | 6018 | bool seen_impure; |
6019 | bool found_prefix; | |
4ee9c684 | 6020 | |
6021 | gfc_clear_attr (¤t_attr); | |
4e4ea00b | 6022 | seen_type = false; |
6023 | seen_impure = false; | |
4ee9c684 | 6024 | |
d1645c7b | 6025 | gcc_assert (!gfc_matching_prefix); |
6026 | gfc_matching_prefix = true; | |
40de255b | 6027 | |
4e4ea00b | 6028 | do |
4ee9c684 | 6029 | { |
4e4ea00b | 6030 | found_prefix = false; |
4ee9c684 | 6031 | |
76e207a9 | 6032 | /* MODULE is a prefix like PURE, ELEMENTAL, etc., having a |
6033 | corresponding attribute seems natural and distinguishes these | |
6034 | procedures from procedure types of PROC_MODULE, which these are | |
6035 | as well. */ | |
6036 | if (gfc_match ("module% ") == MATCH_YES) | |
6037 | { | |
6038 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE prefix at %C")) | |
6039 | goto error; | |
6040 | ||
6041 | current_attr.module_procedure = 1; | |
6042 | found_prefix = true; | |
6043 | } | |
6044 | ||
4e4ea00b | 6045 | if (!seen_type && ts != NULL |
6046 | && gfc_match_decl_type_spec (ts, 0) == MATCH_YES | |
6047 | && gfc_match_space () == MATCH_YES) | |
6048 | { | |
4ee9c684 | 6049 | |
4e4ea00b | 6050 | seen_type = true; |
6051 | found_prefix = true; | |
6052 | } | |
6053 | ||
6054 | if (gfc_match ("elemental% ") == MATCH_YES) | |
6055 | { | |
60e19868 | 6056 | if (!gfc_add_elemental (¤t_attr, NULL)) |
4e4ea00b | 6057 | goto error; |
6058 | ||
6059 | found_prefix = true; | |
6060 | } | |
6061 | ||
6062 | if (gfc_match ("pure% ") == MATCH_YES) | |
6063 | { | |
60e19868 | 6064 | if (!gfc_add_pure (¤t_attr, NULL)) |
4e4ea00b | 6065 | goto error; |
6066 | ||
6067 | found_prefix = true; | |
6068 | } | |
4ee9c684 | 6069 | |
4e4ea00b | 6070 | if (gfc_match ("recursive% ") == MATCH_YES) |
6071 | { | |
60e19868 | 6072 | if (!gfc_add_recursive (¤t_attr, NULL)) |
4e4ea00b | 6073 | goto error; |
6074 | ||
6075 | found_prefix = true; | |
6076 | } | |
6077 | ||
6078 | /* IMPURE is a somewhat special case, as it needs not set an actual | |
6079 | attribute but rather only prevents ELEMENTAL routines from being | |
6080 | automatically PURE. */ | |
6081 | if (gfc_match ("impure% ") == MATCH_YES) | |
6082 | { | |
60e19868 | 6083 | if (!gfc_notify_std (GFC_STD_F2008, "IMPURE procedure at %C")) |
4e4ea00b | 6084 | goto error; |
6085 | ||
6086 | seen_impure = true; | |
6087 | found_prefix = true; | |
6088 | } | |
4ee9c684 | 6089 | } |
4e4ea00b | 6090 | while (found_prefix); |
4ee9c684 | 6091 | |
4e4ea00b | 6092 | /* IMPURE and PURE must not both appear, of course. */ |
6093 | if (seen_impure && current_attr.pure) | |
4ee9c684 | 6094 | { |
4e4ea00b | 6095 | gfc_error ("PURE and IMPURE must not appear both at %C"); |
6096 | goto error; | |
4ee9c684 | 6097 | } |
6098 | ||
4e4ea00b | 6099 | /* If IMPURE it not seen but the procedure is ELEMENTAL, mark it as PURE. */ |
6100 | if (!seen_impure && current_attr.elemental && !current_attr.pure) | |
4ee9c684 | 6101 | { |
60e19868 | 6102 | if (!gfc_add_pure (¤t_attr, NULL)) |
40de255b | 6103 | goto error; |
4ee9c684 | 6104 | } |
6105 | ||
6106 | /* At this point, the next item is not a prefix. */ | |
d1645c7b | 6107 | gcc_assert (gfc_matching_prefix); |
4b8eb6ca | 6108 | |
d1645c7b | 6109 | gfc_matching_prefix = false; |
4ee9c684 | 6110 | return MATCH_YES; |
40de255b | 6111 | |
6112 | error: | |
d1645c7b | 6113 | gcc_assert (gfc_matching_prefix); |
6114 | gfc_matching_prefix = false; | |
40de255b | 6115 | return MATCH_ERROR; |
4ee9c684 | 6116 | } |
6117 | ||
6118 | ||
077932f9 | 6119 | /* Copy attributes matched by gfc_match_prefix() to attributes on a symbol. */ |
4ee9c684 | 6120 | |
60e19868 | 6121 | static bool |
1a9745d2 | 6122 | copy_prefix (symbol_attribute *dest, locus *where) |
4ee9c684 | 6123 | { |
7d7125df | 6124 | if (dest->module_procedure) |
6125 | { | |
6126 | if (current_attr.elemental) | |
6127 | dest->elemental = 1; | |
6128 | ||
6129 | if (current_attr.pure) | |
6130 | dest->pure = 1; | |
6131 | ||
6132 | if (current_attr.recursive) | |
6133 | dest->recursive = 1; | |
6134 | ||
6135 | /* Module procedures are unusual in that the 'dest' is copied from | |
6136 | the interface declaration. However, this is an oportunity to | |
6137 | check that the submodule declaration is compliant with the | |
6138 | interface. */ | |
6139 | if (dest->elemental && !current_attr.elemental) | |
6140 | { | |
6141 | gfc_error ("ELEMENTAL prefix in MODULE PROCEDURE interface is " | |
6142 | "missing at %L", where); | |
6143 | return false; | |
6144 | } | |
6145 | ||
6146 | if (dest->pure && !current_attr.pure) | |
6147 | { | |
6148 | gfc_error ("PURE prefix in MODULE PROCEDURE interface is " | |
6149 | "missing at %L", where); | |
6150 | return false; | |
6151 | } | |
6152 | ||
6153 | if (dest->recursive && !current_attr.recursive) | |
6154 | { | |
6155 | gfc_error ("RECURSIVE prefix in MODULE PROCEDURE interface is " | |
6156 | "missing at %L", where); | |
6157 | return false; | |
6158 | } | |
6159 | ||
6160 | return true; | |
6161 | } | |
4ee9c684 | 6162 | |
60e19868 | 6163 | if (current_attr.elemental && !gfc_add_elemental (dest, where)) |
6164 | return false; | |
4ee9c684 | 6165 | |
7d7125df | 6166 | if (current_attr.pure && !gfc_add_pure (dest, where)) |
6167 | return false; | |
6168 | ||
60e19868 | 6169 | if (current_attr.recursive && !gfc_add_recursive (dest, where)) |
6170 | return false; | |
4ee9c684 | 6171 | |
60e19868 | 6172 | return true; |
4ee9c684 | 6173 | } |
6174 | ||
6175 | ||
9d958d5b | 6176 | /* Match a formal argument list or, if typeparam is true, a |
6177 | type_param_name_list. */ | |
4ee9c684 | 6178 | |
6179 | match | |
9d958d5b | 6180 | gfc_match_formal_arglist (gfc_symbol *progname, int st_flag, |
6181 | int null_flag, bool typeparam) | |
4ee9c684 | 6182 | { |
6183 | gfc_formal_arglist *head, *tail, *p, *q; | |
6184 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6185 | gfc_symbol *sym; | |
6186 | match m; | |
4b8eb6ca | 6187 | gfc_formal_arglist *formal = NULL; |
4ee9c684 | 6188 | |
6189 | head = tail = NULL; | |
6190 | ||
4b8eb6ca | 6191 | /* Keep the interface formal argument list and null it so that the |
6192 | matching for the new declaration can be done. The numbers and | |
6193 | names of the arguments are checked here. The interface formal | |
6194 | arguments are retained in formal_arglist and the characteristics | |
6195 | are compared in resolve.c(resolve_fl_procedure). See the remark | |
6196 | in get_proc_name about the eventual need to copy the formal_arglist | |
6197 | and populate the formal namespace of the interface symbol. */ | |
6198 | if (progname->attr.module_procedure | |
6199 | && progname->attr.host_assoc) | |
6200 | { | |
6201 | formal = progname->formal; | |
6202 | progname->formal = NULL; | |
6203 | } | |
6204 | ||
4ee9c684 | 6205 | if (gfc_match_char ('(') != MATCH_YES) |
6206 | { | |
6207 | if (null_flag) | |
6208 | goto ok; | |
6209 | return MATCH_NO; | |
6210 | } | |
6211 | ||
6212 | if (gfc_match_char (')') == MATCH_YES) | |
6213 | goto ok; | |
6214 | ||
6215 | for (;;) | |
6216 | { | |
6217 | if (gfc_match_char ('*') == MATCH_YES) | |
a5d831e5 | 6218 | { |
6219 | sym = NULL; | |
f0efd2e8 | 6220 | if (!typeparam && !gfc_notify_std (GFC_STD_F95_OBS, |
6221 | "Alternate-return argument at %C")) | |
a5d831e5 | 6222 | { |
6223 | m = MATCH_ERROR; | |
6224 | goto cleanup; | |
6225 | } | |
f0efd2e8 | 6226 | else if (typeparam) |
6227 | gfc_error_now ("A parameter name is required at %C"); | |
a5d831e5 | 6228 | } |
4ee9c684 | 6229 | else |
6230 | { | |
6231 | m = gfc_match_name (name); | |
6232 | if (m != MATCH_YES) | |
f0efd2e8 | 6233 | { |
6234 | if(typeparam) | |
6235 | gfc_error_now ("A parameter name is required at %C"); | |
6236 | goto cleanup; | |
6237 | } | |
4ee9c684 | 6238 | |
9d958d5b | 6239 | if (!typeparam && gfc_get_symbol (name, NULL, &sym)) |
6240 | goto cleanup; | |
6241 | else if (typeparam | |
6242 | && gfc_get_symbol (name, progname->f2k_derived, &sym)) | |
4ee9c684 | 6243 | goto cleanup; |
6244 | } | |
6245 | ||
6246 | p = gfc_get_formal_arglist (); | |
6247 | ||
6248 | if (head == NULL) | |
6249 | head = tail = p; | |
6250 | else | |
6251 | { | |
6252 | tail->next = p; | |
6253 | tail = p; | |
6254 | } | |
6255 | ||
6256 | tail->sym = sym; | |
6257 | ||
6258 | /* We don't add the VARIABLE flavor because the name could be a | |
1a9745d2 | 6259 | dummy procedure. We don't apply these attributes to formal |
6260 | arguments of statement functions. */ | |
4ee9c684 | 6261 | if (sym != NULL && !st_flag |
60e19868 | 6262 | && (!gfc_add_dummy(&sym->attr, sym->name, NULL) |
6263 | || !gfc_missing_attr (&sym->attr, NULL))) | |
4ee9c684 | 6264 | { |
6265 | m = MATCH_ERROR; | |
6266 | goto cleanup; | |
6267 | } | |
6268 | ||
6269 | /* The name of a program unit can be in a different namespace, | |
1a9745d2 | 6270 | so check for it explicitly. After the statement is accepted, |
6271 | the name is checked for especially in gfc_get_symbol(). */ | |
1148eb54 | 6272 | if (gfc_new_block != NULL && sym != NULL && !typeparam |
4ee9c684 | 6273 | && strcmp (sym->name, gfc_new_block->name) == 0) |
6274 | { | |
716da296 | 6275 | gfc_error ("Name %qs at %C is the name of the procedure", |
4ee9c684 | 6276 | sym->name); |
6277 | m = MATCH_ERROR; | |
6278 | goto cleanup; | |
6279 | } | |
6280 | ||
6281 | if (gfc_match_char (')') == MATCH_YES) | |
6282 | goto ok; | |
6283 | ||
6284 | m = gfc_match_char (','); | |
6285 | if (m != MATCH_YES) | |
6286 | { | |
1148eb54 | 6287 | if (typeparam) |
6288 | gfc_error_now ("Expected parameter list in type declaration " | |
6289 | "at %C"); | |
6290 | else | |
6291 | gfc_error ("Unexpected junk in formal argument list at %C"); | |
4ee9c684 | 6292 | goto cleanup; |
6293 | } | |
6294 | } | |
6295 | ||
6296 | ok: | |
6297 | /* Check for duplicate symbols in the formal argument list. */ | |
6298 | if (head != NULL) | |
6299 | { | |
6300 | for (p = head; p->next; p = p->next) | |
6301 | { | |
6302 | if (p->sym == NULL) | |
6303 | continue; | |
6304 | ||
6305 | for (q = p->next; q; q = q->next) | |
6306 | if (p->sym == q->sym) | |
6307 | { | |
1148eb54 | 6308 | if (typeparam) |
6309 | gfc_error_now ("Duplicate name %qs in parameter " | |
6310 | "list at %C", p->sym->name); | |
6311 | else | |
6312 | gfc_error ("Duplicate symbol %qs in formal argument " | |
6313 | "list at %C", p->sym->name); | |
4ee9c684 | 6314 | |
6315 | m = MATCH_ERROR; | |
6316 | goto cleanup; | |
6317 | } | |
6318 | } | |
6319 | } | |
6320 | ||
60e19868 | 6321 | if (!gfc_add_explicit_interface (progname, IFSRC_DECL, head, NULL)) |
4ee9c684 | 6322 | { |
6323 | m = MATCH_ERROR; | |
6324 | goto cleanup; | |
6325 | } | |
6326 | ||
cc78610f | 6327 | /* gfc_error_now used in following and return with MATCH_YES because |
6328 | doing otherwise results in a cascade of extraneous errors and in | |
6329 | some cases an ICE in symbol.c(gfc_release_symbol). */ | |
a23f57e2 | 6330 | if (progname->attr.module_procedure && progname->attr.host_assoc) |
4b8eb6ca | 6331 | { |
a23f57e2 | 6332 | bool arg_count_mismatch = false; |
6333 | ||
6334 | if (!formal && head) | |
6335 | arg_count_mismatch = true; | |
6336 | ||
6337 | /* Abbreviated module procedure declaration is not meant to have any | |
6338 | formal arguments! */ | |
cc78610f | 6339 | if (!progname->abr_modproc_decl && formal && !head) |
a23f57e2 | 6340 | arg_count_mismatch = true; |
6341 | ||
4b8eb6ca | 6342 | for (p = formal, q = head; p && q; p = p->next, q = q->next) |
6343 | { | |
6344 | if ((p->next != NULL && q->next == NULL) | |
6345 | || (p->next == NULL && q->next != NULL)) | |
a23f57e2 | 6346 | arg_count_mismatch = true; |
4b8eb6ca | 6347 | else if ((p->sym == NULL && q->sym == NULL) |
6348 | || strcmp (p->sym->name, q->sym->name) == 0) | |
6349 | continue; | |
6350 | else | |
6351 | gfc_error_now ("Mismatch in MODULE PROCEDURE formal " | |
6352 | "argument names (%s/%s) at %C", | |
6353 | p->sym->name, q->sym->name); | |
6354 | } | |
a23f57e2 | 6355 | |
6356 | if (arg_count_mismatch) | |
6357 | gfc_error_now ("Mismatch in number of MODULE PROCEDURE " | |
6358 | "formal arguments at %C"); | |
4b8eb6ca | 6359 | } |
6360 | ||
4ee9c684 | 6361 | return MATCH_YES; |
6362 | ||
6363 | cleanup: | |
6364 | gfc_free_formal_arglist (head); | |
6365 | return m; | |
6366 | } | |
6367 | ||
6368 | ||
6369 | /* Match a RESULT specification following a function declaration or | |
6370 | ENTRY statement. Also matches the end-of-statement. */ | |
6371 | ||
6372 | static match | |
f6d0e37a | 6373 | match_result (gfc_symbol *function, gfc_symbol **result) |
4ee9c684 | 6374 | { |
6375 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6376 | gfc_symbol *r; | |
6377 | match m; | |
6378 | ||
6379 | if (gfc_match (" result (") != MATCH_YES) | |
6380 | return MATCH_NO; | |
6381 | ||
6382 | m = gfc_match_name (name); | |
6383 | if (m != MATCH_YES) | |
6384 | return m; | |
6385 | ||
c5d33754 | 6386 | /* Get the right paren, and that's it because there could be the |
6387 | bind(c) attribute after the result clause. */ | |
60e19868 | 6388 | if (gfc_match_char (')') != MATCH_YES) |
4ee9c684 | 6389 | { |
c5d33754 | 6390 | /* TODO: should report the missing right paren here. */ |
4ee9c684 | 6391 | return MATCH_ERROR; |
6392 | } | |
6393 | ||
6394 | if (strcmp (function->name, name) == 0) | |
6395 | { | |
1a9745d2 | 6396 | gfc_error ("RESULT variable at %C must be different than function name"); |
4ee9c684 | 6397 | return MATCH_ERROR; |
6398 | } | |
6399 | ||
6400 | if (gfc_get_symbol (name, NULL, &r)) | |
6401 | return MATCH_ERROR; | |
6402 | ||
60e19868 | 6403 | if (!gfc_add_result (&r->attr, r->name, NULL)) |
4ee9c684 | 6404 | return MATCH_ERROR; |
6405 | ||
6406 | *result = r; | |
6407 | ||
6408 | return MATCH_YES; | |
6409 | } | |
6410 | ||
6411 | ||
c5d33754 | 6412 | /* Match a function suffix, which could be a combination of a result |
6413 | clause and BIND(C), either one, or neither. The draft does not | |
6414 | require them to come in a specific order. */ | |
6415 | ||
6416 | match | |
6417 | gfc_match_suffix (gfc_symbol *sym, gfc_symbol **result) | |
6418 | { | |
6419 | match is_bind_c; /* Found bind(c). */ | |
6420 | match is_result; /* Found result clause. */ | |
6421 | match found_match; /* Status of whether we've found a good match. */ | |
e0be6f02 | 6422 | char peek_char; /* Character we're going to peek at. */ |
75ae7f6c | 6423 | bool allow_binding_name; |
c5d33754 | 6424 | |
6425 | /* Initialize to having found nothing. */ | |
6426 | found_match = MATCH_NO; | |
8db94b3b | 6427 | is_bind_c = MATCH_NO; |
c5d33754 | 6428 | is_result = MATCH_NO; |
6429 | ||
6430 | /* Get the next char to narrow between result and bind(c). */ | |
6431 | gfc_gobble_whitespace (); | |
e0be6f02 | 6432 | peek_char = gfc_peek_ascii_char (); |
c5d33754 | 6433 | |
75ae7f6c | 6434 | /* C binding names are not allowed for internal procedures. */ |
6435 | if (gfc_current_state () == COMP_CONTAINS | |
6436 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
6437 | allow_binding_name = false; | |
6438 | else | |
6439 | allow_binding_name = true; | |
6440 | ||
c5d33754 | 6441 | switch (peek_char) |
6442 | { | |
6443 | case 'r': | |
6444 | /* Look for result clause. */ | |
6445 | is_result = match_result (sym, result); | |
6446 | if (is_result == MATCH_YES) | |
6447 | { | |
6448 | /* Now see if there is a bind(c) after it. */ | |
75ae7f6c | 6449 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
c5d33754 | 6450 | /* We've found the result clause and possibly bind(c). */ |
6451 | found_match = MATCH_YES; | |
6452 | } | |
6453 | else | |
6454 | /* This should only be MATCH_ERROR. */ | |
8db94b3b | 6455 | found_match = is_result; |
c5d33754 | 6456 | break; |
6457 | case 'b': | |
6458 | /* Look for bind(c) first. */ | |
75ae7f6c | 6459 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
c5d33754 | 6460 | if (is_bind_c == MATCH_YES) |
6461 | { | |
6462 | /* Now see if a result clause followed it. */ | |
6463 | is_result = match_result (sym, result); | |
6464 | found_match = MATCH_YES; | |
6465 | } | |
6466 | else | |
6467 | { | |
6468 | /* Should only be a MATCH_ERROR if we get here after seeing 'b'. */ | |
6469 | found_match = MATCH_ERROR; | |
6470 | } | |
6471 | break; | |
6472 | default: | |
6473 | gfc_error ("Unexpected junk after function declaration at %C"); | |
6474 | found_match = MATCH_ERROR; | |
6475 | break; | |
6476 | } | |
6477 | ||
c5d33754 | 6478 | if (is_bind_c == MATCH_YES) |
4518e961 | 6479 | { |
75ae7f6c | 6480 | /* Fortran 2008 draft allows BIND(C) for internal procedures. */ |
4518e961 | 6481 | if (gfc_current_state () == COMP_CONTAINS |
75ae7f6c | 6482 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
60e19868 | 6483 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
6484 | "at %L may not be specified for an internal " | |
6485 | "procedure", &gfc_current_locus)) | |
75ae7f6c | 6486 | return MATCH_ERROR; |
6487 | ||
60e19868 | 6488 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, &gfc_current_locus, 1)) |
4518e961 | 6489 | return MATCH_ERROR; |
6490 | } | |
8db94b3b | 6491 | |
c5d33754 | 6492 | return found_match; |
6493 | } | |
6494 | ||
6495 | ||
1e057e9b | 6496 | /* Procedure pointer return value without RESULT statement: |
6497 | Add "hidden" result variable named "ppr@". */ | |
6498 | ||
60e19868 | 6499 | static bool |
1e057e9b | 6500 | add_hidden_procptr_result (gfc_symbol *sym) |
6501 | { | |
6502 | bool case1,case2; | |
6503 | ||
6504 | if (gfc_notification_std (GFC_STD_F2003) == ERROR) | |
60e19868 | 6505 | return false; |
1e057e9b | 6506 | |
6507 | /* First usage case: PROCEDURE and EXTERNAL statements. */ | |
6508 | case1 = gfc_current_state () == COMP_FUNCTION && gfc_current_block () | |
6509 | && strcmp (gfc_current_block ()->name, sym->name) == 0 | |
6510 | && sym->attr.external; | |
6511 | /* Second usage case: INTERFACE statements. */ | |
6512 | case2 = gfc_current_state () == COMP_INTERFACE && gfc_state_stack->previous | |
6513 | && gfc_state_stack->previous->state == COMP_FUNCTION | |
6514 | && strcmp (gfc_state_stack->previous->sym->name, sym->name) == 0; | |
6515 | ||
6516 | if (case1 || case2) | |
6517 | { | |
6518 | gfc_symtree *stree; | |
6519 | if (case1) | |
36b0a1b0 | 6520 | gfc_get_sym_tree ("ppr@", gfc_current_ns, &stree, false); |
f8e5c21b | 6521 | else |
180a5dc0 | 6522 | { |
6523 | gfc_symtree *st2; | |
36b0a1b0 | 6524 | gfc_get_sym_tree ("ppr@", gfc_current_ns->parent, &stree, false); |
180a5dc0 | 6525 | st2 = gfc_new_symtree (&gfc_current_ns->sym_root, "ppr@"); |
6526 | st2->n.sym = stree->n.sym; | |
35ae89b7 | 6527 | stree->n.sym->refs++; |
180a5dc0 | 6528 | } |
1e057e9b | 6529 | sym->result = stree->n.sym; |
6530 | ||
6531 | sym->result->attr.proc_pointer = sym->attr.proc_pointer; | |
6532 | sym->result->attr.pointer = sym->attr.pointer; | |
6533 | sym->result->attr.external = sym->attr.external; | |
6534 | sym->result->attr.referenced = sym->attr.referenced; | |
e40ac2fe | 6535 | sym->result->ts = sym->ts; |
1e057e9b | 6536 | sym->attr.proc_pointer = 0; |
6537 | sym->attr.pointer = 0; | |
6538 | sym->attr.external = 0; | |
6539 | if (sym->result->attr.external && sym->result->attr.pointer) | |
6540 | { | |
6541 | sym->result->attr.pointer = 0; | |
6542 | sym->result->attr.proc_pointer = 1; | |
6543 | } | |
6544 | ||
6545 | return gfc_add_result (&sym->result->attr, sym->result->name, NULL); | |
6546 | } | |
6547 | /* POINTER after PROCEDURE/EXTERNAL/INTERFACE statement. */ | |
6548 | else if (sym->attr.function && !sym->attr.external && sym->attr.pointer | |
6549 | && sym->result && sym->result != sym && sym->result->attr.external | |
6550 | && sym == gfc_current_ns->proc_name | |
6551 | && sym == sym->result->ns->proc_name | |
6552 | && strcmp ("ppr@", sym->result->name) == 0) | |
6553 | { | |
6554 | sym->result->attr.proc_pointer = 1; | |
6555 | sym->attr.pointer = 0; | |
60e19868 | 6556 | return true; |
1e057e9b | 6557 | } |
6558 | else | |
60e19868 | 6559 | return false; |
1e057e9b | 6560 | } |
6561 | ||
6562 | ||
64e93293 | 6563 | /* Match the interface for a PROCEDURE declaration, |
6564 | including brackets (R1212). */ | |
af1a34ee | 6565 | |
6566 | static match | |
64e93293 | 6567 | match_procedure_interface (gfc_symbol **proc_if) |
af1a34ee | 6568 | { |
6569 | match m; | |
1eb2b542 | 6570 | gfc_symtree *st; |
af1a34ee | 6571 | locus old_loc, entry_loc; |
1eb2b542 | 6572 | gfc_namespace *old_ns = gfc_current_ns; |
6573 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
af1a34ee | 6574 | |
1eb2b542 | 6575 | old_loc = entry_loc = gfc_current_locus; |
af1a34ee | 6576 | gfc_clear_ts (¤t_ts); |
6577 | ||
6578 | if (gfc_match (" (") != MATCH_YES) | |
6579 | { | |
6580 | gfc_current_locus = entry_loc; | |
6581 | return MATCH_NO; | |
6582 | } | |
6583 | ||
6584 | /* Get the type spec. for the procedure interface. */ | |
6585 | old_loc = gfc_current_locus; | |
e8152f13 | 6586 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
fd1277c3 | 6587 | gfc_gobble_whitespace (); |
e0be6f02 | 6588 | if (m == MATCH_YES || (m == MATCH_NO && gfc_peek_ascii_char () == ')')) |
af1a34ee | 6589 | goto got_ts; |
6590 | ||
6591 | if (m == MATCH_ERROR) | |
6592 | return m; | |
6593 | ||
1eb2b542 | 6594 | /* Procedure interface is itself a procedure. */ |
af1a34ee | 6595 | gfc_current_locus = old_loc; |
1eb2b542 | 6596 | m = gfc_match_name (name); |
af1a34ee | 6597 | |
1eb2b542 | 6598 | /* First look to see if it is already accessible in the current |
6599 | namespace because it is use associated or contained. */ | |
6600 | st = NULL; | |
6601 | if (gfc_find_sym_tree (name, NULL, 0, &st)) | |
6602 | return MATCH_ERROR; | |
6603 | ||
6604 | /* If it is still not found, then try the parent namespace, if it | |
6605 | exists and create the symbol there if it is still not found. */ | |
6606 | if (gfc_current_ns->parent) | |
6607 | gfc_current_ns = gfc_current_ns->parent; | |
6608 | if (st == NULL && gfc_get_ha_sym_tree (name, &st)) | |
6609 | return MATCH_ERROR; | |
6610 | ||
6611 | gfc_current_ns = old_ns; | |
6612 | *proc_if = st->n.sym; | |
af1a34ee | 6613 | |
64e93293 | 6614 | if (*proc_if) |
af1a34ee | 6615 | { |
64e93293 | 6616 | (*proc_if)->refs++; |
74113644 | 6617 | /* Resolve interface if possible. That way, attr.procedure is only set |
6618 | if it is declared by a later procedure-declaration-stmt, which is | |
87863b31 | 6619 | invalid per F08:C1216 (cf. resolve_procedure_interface). */ |
7e9136f1 | 6620 | while ((*proc_if)->ts.interface |
6621 | && *proc_if != (*proc_if)->ts.interface) | |
64e93293 | 6622 | *proc_if = (*proc_if)->ts.interface; |
74113644 | 6623 | |
87863b31 | 6624 | if ((*proc_if)->attr.flavor == FL_UNKNOWN |
6625 | && (*proc_if)->ts.type == BT_UNKNOWN | |
76e207a9 | 6626 | && !gfc_add_flavor (&(*proc_if)->attr, FL_PROCEDURE, |
60e19868 | 6627 | (*proc_if)->name, NULL)) |
87863b31 | 6628 | return MATCH_ERROR; |
af1a34ee | 6629 | } |
6630 | ||
6631 | got_ts: | |
af1a34ee | 6632 | if (gfc_match (" )") != MATCH_YES) |
6633 | { | |
6634 | gfc_current_locus = entry_loc; | |
6635 | return MATCH_NO; | |
6636 | } | |
6637 | ||
64e93293 | 6638 | return MATCH_YES; |
6639 | } | |
6640 | ||
6641 | ||
6642 | /* Match a PROCEDURE declaration (R1211). */ | |
6643 | ||
6644 | static match | |
6645 | match_procedure_decl (void) | |
6646 | { | |
6647 | match m; | |
6648 | gfc_symbol *sym, *proc_if = NULL; | |
6649 | int num; | |
6650 | gfc_expr *initializer = NULL; | |
6651 | ||
293d72e0 | 6652 | /* Parse interface (with brackets). */ |
64e93293 | 6653 | m = match_procedure_interface (&proc_if); |
6654 | if (m != MATCH_YES) | |
6655 | return m; | |
6656 | ||
6657 | /* Parse attributes (with colons). */ | |
af1a34ee | 6658 | m = match_attr_spec(); |
6659 | if (m == MATCH_ERROR) | |
6660 | return MATCH_ERROR; | |
6661 | ||
caa3ea40 | 6662 | if (proc_if && proc_if->attr.is_bind_c && !current_attr.is_bind_c) |
6663 | { | |
6664 | current_attr.is_bind_c = 1; | |
6665 | has_name_equals = 0; | |
6666 | curr_binding_label = NULL; | |
6667 | } | |
6668 | ||
af1a34ee | 6669 | /* Get procedure symbols. */ |
6670 | for(num=1;;num++) | |
6671 | { | |
af1a34ee | 6672 | m = gfc_match_symbol (&sym, 0); |
6673 | if (m == MATCH_NO) | |
6674 | goto syntax; | |
6675 | else if (m == MATCH_ERROR) | |
6676 | return m; | |
6677 | ||
6678 | /* Add current_attr to the symbol attributes. */ | |
60e19868 | 6679 | if (!gfc_copy_attr (&sym->attr, ¤t_attr, NULL)) |
af1a34ee | 6680 | return MATCH_ERROR; |
6681 | ||
6682 | if (sym->attr.is_bind_c) | |
6683 | { | |
6684 | /* Check for C1218. */ | |
6685 | if (!proc_if || !proc_if->attr.is_bind_c) | |
6686 | { | |
6687 | gfc_error ("BIND(C) attribute at %C requires " | |
6688 | "an interface with BIND(C)"); | |
6689 | return MATCH_ERROR; | |
6690 | } | |
6691 | /* Check for C1217. */ | |
6692 | if (has_name_equals && sym->attr.pointer) | |
6693 | { | |
6694 | gfc_error ("BIND(C) procedure with NAME may not have " | |
6695 | "POINTER attribute at %C"); | |
6696 | return MATCH_ERROR; | |
6697 | } | |
6698 | if (has_name_equals && sym->attr.dummy) | |
6699 | { | |
6700 | gfc_error ("Dummy procedure at %C may not have " | |
6701 | "BIND(C) attribute with NAME"); | |
6702 | return MATCH_ERROR; | |
6703 | } | |
6704 | /* Set binding label for BIND(C). */ | |
60e19868 | 6705 | if (!set_binding_label (&sym->binding_label, sym->name, num)) |
af1a34ee | 6706 | return MATCH_ERROR; |
6707 | } | |
6708 | ||
60e19868 | 6709 | if (!gfc_add_external (&sym->attr, NULL)) |
af1a34ee | 6710 | return MATCH_ERROR; |
1e057e9b | 6711 | |
60e19868 | 6712 | if (add_hidden_procptr_result (sym)) |
1e057e9b | 6713 | sym = sym->result; |
6714 | ||
60e19868 | 6715 | if (!gfc_add_proc (&sym->attr, sym->name, NULL)) |
af1a34ee | 6716 | return MATCH_ERROR; |
6717 | ||
6718 | /* Set interface. */ | |
6719 | if (proc_if != NULL) | |
f7d7a083 | 6720 | { |
13a834aa | 6721 | if (sym->ts.type != BT_UNKNOWN) |
6722 | { | |
716da296 | 6723 | gfc_error ("Procedure %qs at %L already has basic type of %s", |
13a834aa | 6724 | sym->name, &gfc_current_locus, |
6725 | gfc_basic_typename (sym->ts.type)); | |
6726 | return MATCH_ERROR; | |
6727 | } | |
2cd2bb5c | 6728 | sym->ts.interface = proc_if; |
f7d7a083 | 6729 | sym->attr.untyped = 1; |
180a5dc0 | 6730 | sym->attr.if_source = IFSRC_IFBODY; |
f7d7a083 | 6731 | } |
af1a34ee | 6732 | else if (current_ts.type != BT_UNKNOWN) |
6733 | { | |
60e19868 | 6734 | if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
13a834aa | 6735 | return MATCH_ERROR; |
2cd2bb5c | 6736 | sym->ts.interface = gfc_new_symbol ("", gfc_current_ns); |
6737 | sym->ts.interface->ts = current_ts; | |
ce80bc5b | 6738 | sym->ts.interface->attr.flavor = FL_PROCEDURE; |
2cd2bb5c | 6739 | sym->ts.interface->attr.function = 1; |
ce80bc5b | 6740 | sym->attr.function = 1; |
180a5dc0 | 6741 | sym->attr.if_source = IFSRC_UNKNOWN; |
af1a34ee | 6742 | } |
6743 | ||
cad0ddcf | 6744 | if (gfc_match (" =>") == MATCH_YES) |
6745 | { | |
6746 | if (!current_attr.pointer) | |
6747 | { | |
6748 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
6749 | m = MATCH_ERROR; | |
6750 | goto cleanup; | |
6751 | } | |
6752 | ||
23d075f4 | 6753 | m = match_pointer_init (&initializer, 1); |
cad0ddcf | 6754 | if (m != MATCH_YES) |
6755 | goto cleanup; | |
6756 | ||
60e19868 | 6757 | if (!add_init_expr_to_sym (sym->name, &initializer, &gfc_current_locus)) |
cad0ddcf | 6758 | goto cleanup; |
6759 | ||
6760 | } | |
6761 | ||
af1a34ee | 6762 | if (gfc_match_eos () == MATCH_YES) |
6763 | return MATCH_YES; | |
6764 | if (gfc_match_char (',') != MATCH_YES) | |
6765 | goto syntax; | |
6766 | } | |
6767 | ||
6768 | syntax: | |
6769 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
6770 | return MATCH_ERROR; | |
cad0ddcf | 6771 | |
6772 | cleanup: | |
6773 | /* Free stuff up and return. */ | |
6774 | gfc_free_expr (initializer); | |
6775 | return m; | |
af1a34ee | 6776 | } |
6777 | ||
6778 | ||
64e93293 | 6779 | static match |
6780 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc); | |
6781 | ||
6782 | ||
6783 | /* Match a procedure pointer component declaration (R445). */ | |
6784 | ||
6785 | static match | |
6786 | match_ppc_decl (void) | |
6787 | { | |
6788 | match m; | |
6789 | gfc_symbol *proc_if = NULL; | |
6790 | gfc_typespec ts; | |
6791 | int num; | |
6792 | gfc_component *c; | |
6793 | gfc_expr *initializer = NULL; | |
6794 | gfc_typebound_proc* tb; | |
6795 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6796 | ||
6797 | /* Parse interface (with brackets). */ | |
6798 | m = match_procedure_interface (&proc_if); | |
6799 | if (m != MATCH_YES) | |
6800 | goto syntax; | |
6801 | ||
6802 | /* Parse attributes. */ | |
6803 | tb = XCNEW (gfc_typebound_proc); | |
6804 | tb->where = gfc_current_locus; | |
6805 | m = match_binding_attributes (tb, false, true); | |
6806 | if (m == MATCH_ERROR) | |
6807 | return m; | |
6808 | ||
64e93293 | 6809 | gfc_clear_attr (¤t_attr); |
6810 | current_attr.procedure = 1; | |
6811 | current_attr.proc_pointer = 1; | |
6812 | current_attr.access = tb->access; | |
6813 | current_attr.flavor = FL_PROCEDURE; | |
6814 | ||
6815 | /* Match the colons (required). */ | |
6816 | if (gfc_match (" ::") != MATCH_YES) | |
6817 | { | |
0d2b3c9c | 6818 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
64e93293 | 6819 | return MATCH_ERROR; |
6820 | } | |
6821 | ||
6822 | /* Check for C450. */ | |
6823 | if (!tb->nopass && proc_if == NULL) | |
6824 | { | |
6825 | gfc_error("NOPASS or explicit interface required at %C"); | |
6826 | return MATCH_ERROR; | |
6827 | } | |
6828 | ||
60e19868 | 6829 | if (!gfc_notify_std (GFC_STD_F2003, "Procedure pointer component at %C")) |
8a026279 | 6830 | return MATCH_ERROR; |
6831 | ||
64e93293 | 6832 | /* Match PPC names. */ |
6833 | ts = current_ts; | |
6834 | for(num=1;;num++) | |
6835 | { | |
6836 | m = gfc_match_name (name); | |
6837 | if (m == MATCH_NO) | |
6838 | goto syntax; | |
6839 | else if (m == MATCH_ERROR) | |
6840 | return m; | |
6841 | ||
60e19868 | 6842 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
64e93293 | 6843 | return MATCH_ERROR; |
6844 | ||
6845 | /* Add current_attr to the symbol attributes. */ | |
60e19868 | 6846 | if (!gfc_copy_attr (&c->attr, ¤t_attr, NULL)) |
64e93293 | 6847 | return MATCH_ERROR; |
6848 | ||
60e19868 | 6849 | if (!gfc_add_external (&c->attr, NULL)) |
64e93293 | 6850 | return MATCH_ERROR; |
6851 | ||
60e19868 | 6852 | if (!gfc_add_proc (&c->attr, name, NULL)) |
64e93293 | 6853 | return MATCH_ERROR; |
6854 | ||
99014f81 | 6855 | if (num == 1) |
6856 | c->tb = tb; | |
6857 | else | |
6858 | { | |
6859 | c->tb = XCNEW (gfc_typebound_proc); | |
6860 | c->tb->where = gfc_current_locus; | |
6861 | *c->tb = *tb; | |
6862 | } | |
fe9b08a2 | 6863 | |
64e93293 | 6864 | /* Set interface. */ |
6865 | if (proc_if != NULL) | |
6866 | { | |
6867 | c->ts.interface = proc_if; | |
6868 | c->attr.untyped = 1; | |
6869 | c->attr.if_source = IFSRC_IFBODY; | |
6870 | } | |
6871 | else if (ts.type != BT_UNKNOWN) | |
6872 | { | |
6873 | c->ts = ts; | |
6874 | c->ts.interface = gfc_new_symbol ("", gfc_current_ns); | |
a63bcd97 | 6875 | c->ts.interface->result = c->ts.interface; |
64e93293 | 6876 | c->ts.interface->ts = ts; |
ce80bc5b | 6877 | c->ts.interface->attr.flavor = FL_PROCEDURE; |
64e93293 | 6878 | c->ts.interface->attr.function = 1; |
ce80bc5b | 6879 | c->attr.function = 1; |
64e93293 | 6880 | c->attr.if_source = IFSRC_UNKNOWN; |
6881 | } | |
6882 | ||
6883 | if (gfc_match (" =>") == MATCH_YES) | |
6884 | { | |
23d075f4 | 6885 | m = match_pointer_init (&initializer, 1); |
64e93293 | 6886 | if (m != MATCH_YES) |
6887 | { | |
6888 | gfc_free_expr (initializer); | |
6889 | return m; | |
6890 | } | |
6891 | c->initializer = initializer; | |
6892 | } | |
6893 | ||
6894 | if (gfc_match_eos () == MATCH_YES) | |
6895 | return MATCH_YES; | |
6896 | if (gfc_match_char (',') != MATCH_YES) | |
6897 | goto syntax; | |
6898 | } | |
6899 | ||
6900 | syntax: | |
6901 | gfc_error ("Syntax error in procedure pointer component at %C"); | |
6902 | return MATCH_ERROR; | |
6903 | } | |
6904 | ||
6905 | ||
af1a34ee | 6906 | /* Match a PROCEDURE declaration inside an interface (R1206). */ |
6907 | ||
6908 | static match | |
6909 | match_procedure_in_interface (void) | |
6910 | { | |
6911 | match m; | |
6912 | gfc_symbol *sym; | |
6913 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
2b0f5dc8 | 6914 | locus old_locus; |
af1a34ee | 6915 | |
6916 | if (current_interface.type == INTERFACE_NAMELESS | |
6917 | || current_interface.type == INTERFACE_ABSTRACT) | |
6918 | { | |
6919 | gfc_error ("PROCEDURE at %C must be in a generic interface"); | |
6920 | return MATCH_ERROR; | |
6921 | } | |
6922 | ||
2b0f5dc8 | 6923 | /* Check if the F2008 optional double colon appears. */ |
6924 | gfc_gobble_whitespace (); | |
6925 | old_locus = gfc_current_locus; | |
6926 | if (gfc_match ("::") == MATCH_YES) | |
6927 | { | |
60e19868 | 6928 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
6929 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
2b0f5dc8 | 6930 | return MATCH_ERROR; |
6931 | } | |
6932 | else | |
6933 | gfc_current_locus = old_locus; | |
6934 | ||
af1a34ee | 6935 | for(;;) |
6936 | { | |
6937 | m = gfc_match_name (name); | |
6938 | if (m == MATCH_NO) | |
6939 | goto syntax; | |
6940 | else if (m == MATCH_ERROR) | |
6941 | return m; | |
6942 | if (gfc_get_symbol (name, gfc_current_ns->parent, &sym)) | |
6943 | return MATCH_ERROR; | |
6944 | ||
60e19868 | 6945 | if (!gfc_add_interface (sym)) |
af1a34ee | 6946 | return MATCH_ERROR; |
6947 | ||
af1a34ee | 6948 | if (gfc_match_eos () == MATCH_YES) |
6949 | break; | |
6950 | if (gfc_match_char (',') != MATCH_YES) | |
6951 | goto syntax; | |
6952 | } | |
6953 | ||
6954 | return MATCH_YES; | |
6955 | ||
6956 | syntax: | |
6957 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
6958 | return MATCH_ERROR; | |
6959 | } | |
6960 | ||
6961 | ||
6962 | /* General matcher for PROCEDURE declarations. */ | |
6963 | ||
7fd88f6e | 6964 | static match match_procedure_in_type (void); |
6965 | ||
af1a34ee | 6966 | match |
6967 | gfc_match_procedure (void) | |
6968 | { | |
6969 | match m; | |
6970 | ||
6971 | switch (gfc_current_state ()) | |
6972 | { | |
6973 | case COMP_NONE: | |
6974 | case COMP_PROGRAM: | |
6975 | case COMP_MODULE: | |
4b8eb6ca | 6976 | case COMP_SUBMODULE: |
af1a34ee | 6977 | case COMP_SUBROUTINE: |
6978 | case COMP_FUNCTION: | |
0b342e60 | 6979 | case COMP_BLOCK: |
af1a34ee | 6980 | m = match_procedure_decl (); |
6981 | break; | |
6982 | case COMP_INTERFACE: | |
6983 | m = match_procedure_in_interface (); | |
6984 | break; | |
6985 | case COMP_DERIVED: | |
64e93293 | 6986 | m = match_ppc_decl (); |
6987 | break; | |
7fd88f6e | 6988 | case COMP_DERIVED_CONTAINS: |
6989 | m = match_procedure_in_type (); | |
6990 | break; | |
af1a34ee | 6991 | default: |
6992 | return MATCH_NO; | |
6993 | } | |
6994 | ||
6995 | if (m != MATCH_YES) | |
6996 | return m; | |
6997 | ||
60e19868 | 6998 | if (!gfc_notify_std (GFC_STD_F2003, "PROCEDURE statement at %C")) |
af1a34ee | 6999 | return MATCH_ERROR; |
7000 | ||
7001 | return m; | |
7002 | } | |
7003 | ||
7004 | ||
a34926ba | 7005 | /* Warn if a matched procedure has the same name as an intrinsic; this is |
7006 | simply a wrapper around gfc_warn_intrinsic_shadow that interprets the current | |
7007 | parser-state-stack to find out whether we're in a module. */ | |
7008 | ||
7009 | static void | |
8290d53f | 7010 | do_warn_intrinsic_shadow (const gfc_symbol* sym, bool func) |
a34926ba | 7011 | { |
7012 | bool in_module; | |
7013 | ||
7014 | in_module = (gfc_state_stack->previous | |
4b8eb6ca | 7015 | && (gfc_state_stack->previous->state == COMP_MODULE |
7016 | || gfc_state_stack->previous->state == COMP_SUBMODULE)); | |
a34926ba | 7017 | |
7018 | gfc_warn_intrinsic_shadow (sym, in_module, func); | |
7019 | } | |
7020 | ||
7021 | ||
4ee9c684 | 7022 | /* Match a function declaration. */ |
7023 | ||
7024 | match | |
7025 | gfc_match_function_decl (void) | |
7026 | { | |
7027 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7028 | gfc_symbol *sym, *result; | |
7029 | locus old_loc; | |
7030 | match m; | |
c5d33754 | 7031 | match suffix_match; |
8db94b3b | 7032 | match found_match; /* Status returned by match func. */ |
4ee9c684 | 7033 | |
7034 | if (gfc_current_state () != COMP_NONE | |
7035 | && gfc_current_state () != COMP_INTERFACE | |
7036 | && gfc_current_state () != COMP_CONTAINS) | |
7037 | return MATCH_NO; | |
7038 | ||
7039 | gfc_clear_ts (¤t_ts); | |
7040 | ||
cbb9e6aa | 7041 | old_loc = gfc_current_locus; |
4ee9c684 | 7042 | |
077932f9 | 7043 | m = gfc_match_prefix (¤t_ts); |
4ee9c684 | 7044 | if (m != MATCH_YES) |
7045 | { | |
cbb9e6aa | 7046 | gfc_current_locus = old_loc; |
4ee9c684 | 7047 | return m; |
7048 | } | |
7049 | ||
7050 | if (gfc_match ("function% %n", name) != MATCH_YES) | |
7051 | { | |
cbb9e6aa | 7052 | gfc_current_locus = old_loc; |
4ee9c684 | 7053 | return MATCH_NO; |
7054 | } | |
4b8eb6ca | 7055 | |
d77f260f | 7056 | if (get_proc_name (name, &sym, false)) |
4ee9c684 | 7057 | return MATCH_ERROR; |
1e057e9b | 7058 | |
60e19868 | 7059 | if (add_hidden_procptr_result (sym)) |
1e057e9b | 7060 | sym = sym->result; |
7061 | ||
4b8eb6ca | 7062 | if (current_attr.module_procedure) |
7063 | sym->attr.module_procedure = 1; | |
7064 | ||
4ee9c684 | 7065 | gfc_new_block = sym; |
7066 | ||
7067 | m = gfc_match_formal_arglist (sym, 0, 0); | |
7068 | if (m == MATCH_NO) | |
9b435b6d | 7069 | { |
7070 | gfc_error ("Expected formal argument list in function " | |
1a9745d2 | 7071 | "definition at %C"); |
9b435b6d | 7072 | m = MATCH_ERROR; |
7073 | goto cleanup; | |
7074 | } | |
4ee9c684 | 7075 | else if (m == MATCH_ERROR) |
7076 | goto cleanup; | |
7077 | ||
7078 | result = NULL; | |
7079 | ||
c5d33754 | 7080 | /* According to the draft, the bind(c) and result clause can |
7081 | come in either order after the formal_arg_list (i.e., either | |
7082 | can be first, both can exist together or by themselves or neither | |
7083 | one). Therefore, the match_result can't match the end of the | |
7084 | string, and check for the bind(c) or result clause in either order. */ | |
7085 | found_match = gfc_match_eos (); | |
7086 | ||
7087 | /* Make sure that it isn't already declared as BIND(C). If it is, it | |
7088 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7089 | not allowed for procedures. */ | |
7090 | if (sym->attr.is_bind_c == 1) | |
7091 | { | |
7092 | sym->attr.is_bind_c = 0; | |
7093 | if (sym->old_symbol != NULL) | |
7094 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7095 | "variables or common blocks", | |
7096 | &(sym->old_symbol->declared_at)); | |
7097 | else | |
7098 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7099 | "variables or common blocks", &gfc_current_locus); | |
4ee9c684 | 7100 | } |
7101 | ||
c5d33754 | 7102 | if (found_match != MATCH_YES) |
4ee9c684 | 7103 | { |
c5d33754 | 7104 | /* If we haven't found the end-of-statement, look for a suffix. */ |
7105 | suffix_match = gfc_match_suffix (sym, &result); | |
7106 | if (suffix_match == MATCH_YES) | |
7107 | /* Need to get the eos now. */ | |
7108 | found_match = gfc_match_eos (); | |
7109 | else | |
7110 | found_match = suffix_match; | |
4ee9c684 | 7111 | } |
7112 | ||
c5d33754 | 7113 | if(found_match != MATCH_YES) |
7114 | m = MATCH_ERROR; | |
4ee9c684 | 7115 | else |
7116 | { | |
c5d33754 | 7117 | /* Make changes to the symbol. */ |
7118 | m = MATCH_ERROR; | |
8db94b3b | 7119 | |
60e19868 | 7120 | if (!gfc_add_function (&sym->attr, sym->name, NULL)) |
c5d33754 | 7121 | goto cleanup; |
8db94b3b | 7122 | |
76e207a9 | 7123 | if (!gfc_missing_attr (&sym->attr, NULL)) |
c5d33754 | 7124 | goto cleanup; |
4ee9c684 | 7125 | |
76e207a9 | 7126 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
7127 | { | |
7128 | if(!sym->attr.module_procedure) | |
7129 | goto cleanup; | |
7130 | else | |
7131 | gfc_error_check (); | |
7132 | } | |
7133 | ||
8d39570e | 7134 | /* Delay matching the function characteristics until after the |
077932f9 | 7135 | specification block by signalling kind=-1. */ |
8d39570e | 7136 | sym->declared_at = old_loc; |
7137 | if (current_ts.type != BT_UNKNOWN) | |
7138 | current_ts.kind = -1; | |
7139 | else | |
7140 | current_ts.kind = 0; | |
077932f9 | 7141 | |
c5d33754 | 7142 | if (result == NULL) |
7143 | { | |
0477d42d | 7144 | if (current_ts.type != BT_UNKNOWN |
60e19868 | 7145 | && !gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
0477d42d | 7146 | goto cleanup; |
c5d33754 | 7147 | sym->result = sym; |
7148 | } | |
7149 | else | |
7150 | { | |
0477d42d | 7151 | if (current_ts.type != BT_UNKNOWN |
60e19868 | 7152 | && !gfc_add_type (result, ¤t_ts, &gfc_current_locus)) |
0477d42d | 7153 | goto cleanup; |
c5d33754 | 7154 | sym->result = result; |
7155 | } | |
7156 | ||
a34926ba | 7157 | /* Warn if this procedure has the same name as an intrinsic. */ |
8290d53f | 7158 | do_warn_intrinsic_shadow (sym, true); |
a34926ba | 7159 | |
c5d33754 | 7160 | return MATCH_YES; |
7161 | } | |
4ee9c684 | 7162 | |
7163 | cleanup: | |
cbb9e6aa | 7164 | gfc_current_locus = old_loc; |
4ee9c684 | 7165 | return m; |
7166 | } | |
7167 | ||
1a9745d2 | 7168 | |
7169 | /* This is mostly a copy of parse.c(add_global_procedure) but modified to | |
7170 | pass the name of the entry, rather than the gfc_current_block name, and | |
7171 | to return false upon finding an existing global entry. */ | |
858f9894 | 7172 | |
7173 | static bool | |
8d779aef | 7174 | add_global_entry (const char *name, const char *binding_label, bool sub, |
7175 | locus *where) | |
858f9894 | 7176 | { |
7177 | gfc_gsymbol *s; | |
8458f4ca | 7178 | enum gfc_symbol_type type; |
858f9894 | 7179 | |
5b11d932 | 7180 | type = sub ? GSYM_SUBROUTINE : GSYM_FUNCTION; |
858f9894 | 7181 | |
da5c730d | 7182 | /* Only in Fortran 2003: For procedures with a binding label also the Fortran |
7183 | name is a global identifier. */ | |
7184 | if (!binding_label || gfc_notification_std (GFC_STD_F2008)) | |
858f9894 | 7185 | { |
da5c730d | 7186 | s = gfc_get_gsymbol (name); |
7187 | ||
7188 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
7189 | { | |
8d779aef | 7190 | gfc_global_used (s, where); |
da5c730d | 7191 | return false; |
7192 | } | |
7193 | else | |
7194 | { | |
7195 | s->type = type; | |
c8b913ab | 7196 | s->sym_name = name; |
8d779aef | 7197 | s->where = *where; |
da5c730d | 7198 | s->defined = 1; |
7199 | s->ns = gfc_current_ns; | |
7200 | } | |
858f9894 | 7201 | } |
da5c730d | 7202 | |
7203 | /* Don't add the symbol multiple times. */ | |
7204 | if (binding_label | |
7205 | && (!gfc_notification_std (GFC_STD_F2008) | |
7206 | || strcmp (name, binding_label) != 0)) | |
7207 | { | |
7208 | s = gfc_get_gsymbol (binding_label); | |
7209 | ||
7210 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
7211 | { | |
8d779aef | 7212 | gfc_global_used (s, where); |
da5c730d | 7213 | return false; |
7214 | } | |
7215 | else | |
7216 | { | |
7217 | s->type = type; | |
c8b913ab | 7218 | s->sym_name = name; |
da5c730d | 7219 | s->binding_label = binding_label; |
8d779aef | 7220 | s->where = *where; |
da5c730d | 7221 | s->defined = 1; |
7222 | s->ns = gfc_current_ns; | |
7223 | } | |
7224 | } | |
7225 | ||
7226 | return true; | |
858f9894 | 7227 | } |
4ee9c684 | 7228 | |
1a9745d2 | 7229 | |
4ee9c684 | 7230 | /* Match an ENTRY statement. */ |
7231 | ||
7232 | match | |
7233 | gfc_match_entry (void) | |
7234 | { | |
1b716045 | 7235 | gfc_symbol *proc; |
7236 | gfc_symbol *result; | |
7237 | gfc_symbol *entry; | |
4ee9c684 | 7238 | char name[GFC_MAX_SYMBOL_LEN + 1]; |
7239 | gfc_compile_state state; | |
7240 | match m; | |
1b716045 | 7241 | gfc_entry_list *el; |
7b5e1acc | 7242 | locus old_loc; |
d77f260f | 7243 | bool module_procedure; |
86f0974b | 7244 | char peek_char; |
7245 | match is_bind_c; | |
4ee9c684 | 7246 | |
7247 | m = gfc_match_name (name); | |
7248 | if (m != MATCH_YES) | |
7249 | return m; | |
7250 | ||
60e19868 | 7251 | if (!gfc_notify_std (GFC_STD_F2008_OBS, "ENTRY statement at %C")) |
a3b81b0f | 7252 | return MATCH_ERROR; |
7253 | ||
1b716045 | 7254 | state = gfc_current_state (); |
ea37f786 | 7255 | if (state != COMP_SUBROUTINE && state != COMP_FUNCTION) |
1b716045 | 7256 | { |
ea37f786 | 7257 | switch (state) |
7258 | { | |
7259 | case COMP_PROGRAM: | |
7260 | gfc_error ("ENTRY statement at %C cannot appear within a PROGRAM"); | |
7261 | break; | |
7262 | case COMP_MODULE: | |
7263 | gfc_error ("ENTRY statement at %C cannot appear within a MODULE"); | |
7264 | break; | |
4b8eb6ca | 7265 | case COMP_SUBMODULE: |
7266 | gfc_error ("ENTRY statement at %C cannot appear within a SUBMODULE"); | |
7267 | break; | |
ea37f786 | 7268 | case COMP_BLOCK_DATA: |
1a9745d2 | 7269 | gfc_error ("ENTRY statement at %C cannot appear within " |
7270 | "a BLOCK DATA"); | |
ea37f786 | 7271 | break; |
7272 | case COMP_INTERFACE: | |
1a9745d2 | 7273 | gfc_error ("ENTRY statement at %C cannot appear within " |
7274 | "an INTERFACE"); | |
ea37f786 | 7275 | break; |
d7cd448a | 7276 | case COMP_STRUCTURE: |
7277 | gfc_error ("ENTRY statement at %C cannot appear within " | |
7278 | "a STRUCTURE block"); | |
7279 | break; | |
ea37f786 | 7280 | case COMP_DERIVED: |
1a9745d2 | 7281 | gfc_error ("ENTRY statement at %C cannot appear within " |
7282 | "a DERIVED TYPE block"); | |
ea37f786 | 7283 | break; |
7284 | case COMP_IF: | |
1a9745d2 | 7285 | gfc_error ("ENTRY statement at %C cannot appear within " |
7286 | "an IF-THEN block"); | |
ea37f786 | 7287 | break; |
7288 | case COMP_DO: | |
55ea8666 | 7289 | case COMP_DO_CONCURRENT: |
1a9745d2 | 7290 | gfc_error ("ENTRY statement at %C cannot appear within " |
7291 | "a DO block"); | |
ea37f786 | 7292 | break; |
7293 | case COMP_SELECT: | |
1a9745d2 | 7294 | gfc_error ("ENTRY statement at %C cannot appear within " |
7295 | "a SELECT block"); | |
ea37f786 | 7296 | break; |
7297 | case COMP_FORALL: | |
1a9745d2 | 7298 | gfc_error ("ENTRY statement at %C cannot appear within " |
7299 | "a FORALL block"); | |
ea37f786 | 7300 | break; |
7301 | case COMP_WHERE: | |
1a9745d2 | 7302 | gfc_error ("ENTRY statement at %C cannot appear within " |
7303 | "a WHERE block"); | |
ea37f786 | 7304 | break; |
7305 | case COMP_CONTAINS: | |
1a9745d2 | 7306 | gfc_error ("ENTRY statement at %C cannot appear within " |
7307 | "a contained subprogram"); | |
ea37f786 | 7308 | break; |
7309 | default: | |
3132dbae | 7310 | gfc_error ("Unexpected ENTRY statement at %C"); |
ea37f786 | 7311 | } |
1b716045 | 7312 | return MATCH_ERROR; |
7313 | } | |
7314 | ||
c286c294 | 7315 | if ((state == COMP_SUBROUTINE || state == COMP_FUNCTION) |
7316 | && gfc_state_stack->previous->state == COMP_INTERFACE) | |
7317 | { | |
7318 | gfc_error ("ENTRY statement at %C cannot appear within an INTERFACE"); | |
7319 | return MATCH_ERROR; | |
7320 | } | |
7321 | ||
d77f260f | 7322 | module_procedure = gfc_current_ns->parent != NULL |
1a9745d2 | 7323 | && gfc_current_ns->parent->proc_name |
7324 | && gfc_current_ns->parent->proc_name->attr.flavor | |
7325 | == FL_MODULE; | |
d77f260f | 7326 | |
1b716045 | 7327 | if (gfc_current_ns->parent != NULL |
7328 | && gfc_current_ns->parent->proc_name | |
d77f260f | 7329 | && !module_procedure) |
1b716045 | 7330 | { |
7331 | gfc_error("ENTRY statement at %C cannot appear in a " | |
7332 | "contained procedure"); | |
7333 | return MATCH_ERROR; | |
7334 | } | |
7335 | ||
d77f260f | 7336 | /* Module function entries need special care in get_proc_name |
7337 | because previous references within the function will have | |
7338 | created symbols attached to the current namespace. */ | |
7339 | if (get_proc_name (name, &entry, | |
7340 | gfc_current_ns->parent != NULL | |
c1e4695a | 7341 | && module_procedure)) |
4ee9c684 | 7342 | return MATCH_ERROR; |
7343 | ||
1b716045 | 7344 | proc = gfc_current_block (); |
7345 | ||
86f0974b | 7346 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
7347 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7348 | not allowed for procedures. */ | |
7349 | if (entry->attr.is_bind_c == 1) | |
7350 | { | |
7351 | entry->attr.is_bind_c = 0; | |
7352 | if (entry->old_symbol != NULL) | |
7353 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7354 | "variables or common blocks", | |
7355 | &(entry->old_symbol->declared_at)); | |
7356 | else | |
7357 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7358 | "variables or common blocks", &gfc_current_locus); | |
7359 | } | |
8db94b3b | 7360 | |
86f0974b | 7361 | /* Check what next non-whitespace character is so we can tell if there |
7362 | is the required parens if we have a BIND(C). */ | |
8d779aef | 7363 | old_loc = gfc_current_locus; |
86f0974b | 7364 | gfc_gobble_whitespace (); |
e0be6f02 | 7365 | peek_char = gfc_peek_ascii_char (); |
86f0974b | 7366 | |
1b716045 | 7367 | if (state == COMP_SUBROUTINE) |
4ee9c684 | 7368 | { |
4ee9c684 | 7369 | m = gfc_match_formal_arglist (entry, 0, 1); |
7370 | if (m != MATCH_YES) | |
7371 | return MATCH_ERROR; | |
7372 | ||
75ae7f6c | 7373 | /* Call gfc_match_bind_c with allow_binding_name = true as ENTRY can |
7374 | never be an internal procedure. */ | |
7375 | is_bind_c = gfc_match_bind_c (entry, true); | |
86f0974b | 7376 | if (is_bind_c == MATCH_ERROR) |
7377 | return MATCH_ERROR; | |
7378 | if (is_bind_c == MATCH_YES) | |
7379 | { | |
7380 | if (peek_char != '(') | |
7381 | { | |
7382 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
7383 | return MATCH_ERROR; | |
7384 | } | |
76e207a9 | 7385 | if (!gfc_add_is_bind_c (&(entry->attr), entry->name, |
60e19868 | 7386 | &(entry->declared_at), 1)) |
86f0974b | 7387 | return MATCH_ERROR; |
7388 | } | |
7389 | ||
da5c730d | 7390 | if (!gfc_current_ns->parent |
8d779aef | 7391 | && !add_global_entry (name, entry->binding_label, true, |
7392 | &old_loc)) | |
da5c730d | 7393 | return MATCH_ERROR; |
7394 | ||
7395 | /* An entry in a subroutine. */ | |
60e19868 | 7396 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7397 | || !gfc_add_subroutine (&entry->attr, entry->name, NULL)) | |
4ee9c684 | 7398 | return MATCH_ERROR; |
1b716045 | 7399 | } |
7400 | else | |
7401 | { | |
7b5e1acc | 7402 | /* An entry in a function. |
1a9745d2 | 7403 | We need to take special care because writing |
7404 | ENTRY f() | |
7405 | as | |
7406 | ENTRY f | |
7407 | is allowed, whereas | |
7408 | ENTRY f() RESULT (r) | |
7409 | can't be written as | |
7410 | ENTRY f RESULT (r). */ | |
7b5e1acc | 7411 | if (gfc_match_eos () == MATCH_YES) |
7412 | { | |
7413 | gfc_current_locus = old_loc; | |
7414 | /* Match the empty argument list, and add the interface to | |
7415 | the symbol. */ | |
7416 | m = gfc_match_formal_arglist (entry, 0, 1); | |
7417 | } | |
7418 | else | |
7419 | m = gfc_match_formal_arglist (entry, 0, 0); | |
7420 | ||
4ee9c684 | 7421 | if (m != MATCH_YES) |
7422 | return MATCH_ERROR; | |
7423 | ||
4ee9c684 | 7424 | result = NULL; |
7425 | ||
7426 | if (gfc_match_eos () == MATCH_YES) | |
7427 | { | |
60e19868 | 7428 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7429 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
4ee9c684 | 7430 | return MATCH_ERROR; |
7431 | ||
c6871095 | 7432 | entry->result = entry; |
4ee9c684 | 7433 | } |
7434 | else | |
7435 | { | |
86f0974b | 7436 | m = gfc_match_suffix (entry, &result); |
4ee9c684 | 7437 | if (m == MATCH_NO) |
7438 | gfc_syntax_error (ST_ENTRY); | |
7439 | if (m != MATCH_YES) | |
7440 | return MATCH_ERROR; | |
7441 | ||
86f0974b | 7442 | if (result) |
7443 | { | |
60e19868 | 7444 | if (!gfc_add_result (&result->attr, result->name, NULL) |
7445 | || !gfc_add_entry (&entry->attr, result->name, NULL) | |
7446 | || !gfc_add_function (&entry->attr, result->name, NULL)) | |
86f0974b | 7447 | return MATCH_ERROR; |
7448 | entry->result = result; | |
7449 | } | |
7450 | else | |
7451 | { | |
60e19868 | 7452 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7453 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
86f0974b | 7454 | return MATCH_ERROR; |
7455 | entry->result = entry; | |
7456 | } | |
4ee9c684 | 7457 | } |
da5c730d | 7458 | |
7459 | if (!gfc_current_ns->parent | |
8d779aef | 7460 | && !add_global_entry (name, entry->binding_label, false, |
7461 | &old_loc)) | |
da5c730d | 7462 | return MATCH_ERROR; |
4ee9c684 | 7463 | } |
7464 | ||
7465 | if (gfc_match_eos () != MATCH_YES) | |
7466 | { | |
7467 | gfc_syntax_error (ST_ENTRY); | |
7468 | return MATCH_ERROR; | |
7469 | } | |
7470 | ||
1b716045 | 7471 | entry->attr.recursive = proc->attr.recursive; |
7472 | entry->attr.elemental = proc->attr.elemental; | |
7473 | entry->attr.pure = proc->attr.pure; | |
4ee9c684 | 7474 | |
1b716045 | 7475 | el = gfc_get_entry_list (); |
7476 | el->sym = entry; | |
7477 | el->next = gfc_current_ns->entries; | |
7478 | gfc_current_ns->entries = el; | |
7479 | if (el->next) | |
7480 | el->id = el->next->id + 1; | |
7481 | else | |
7482 | el->id = 1; | |
4ee9c684 | 7483 | |
1b716045 | 7484 | new_st.op = EXEC_ENTRY; |
7485 | new_st.ext.entry = el; | |
7486 | ||
7487 | return MATCH_YES; | |
4ee9c684 | 7488 | } |
7489 | ||
7490 | ||
7491 | /* Match a subroutine statement, including optional prefixes. */ | |
7492 | ||
7493 | match | |
7494 | gfc_match_subroutine (void) | |
7495 | { | |
7496 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7497 | gfc_symbol *sym; | |
7498 | match m; | |
c5d33754 | 7499 | match is_bind_c; |
7500 | char peek_char; | |
75ae7f6c | 7501 | bool allow_binding_name; |
4ee9c684 | 7502 | |
7503 | if (gfc_current_state () != COMP_NONE | |
7504 | && gfc_current_state () != COMP_INTERFACE | |
7505 | && gfc_current_state () != COMP_CONTAINS) | |
7506 | return MATCH_NO; | |
7507 | ||
077932f9 | 7508 | m = gfc_match_prefix (NULL); |
4ee9c684 | 7509 | if (m != MATCH_YES) |
7510 | return m; | |
7511 | ||
7512 | m = gfc_match ("subroutine% %n", name); | |
7513 | if (m != MATCH_YES) | |
7514 | return m; | |
7515 | ||
d77f260f | 7516 | if (get_proc_name (name, &sym, false)) |
4ee9c684 | 7517 | return MATCH_ERROR; |
1e057e9b | 7518 | |
22c1d301 | 7519 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if |
293d72e0 | 7520 | the symbol existed before. */ |
22c1d301 | 7521 | sym->declared_at = gfc_current_locus; |
7522 | ||
4b8eb6ca | 7523 | if (current_attr.module_procedure) |
7524 | sym->attr.module_procedure = 1; | |
7525 | ||
60e19868 | 7526 | if (add_hidden_procptr_result (sym)) |
1e057e9b | 7527 | sym = sym->result; |
7528 | ||
4ee9c684 | 7529 | gfc_new_block = sym; |
7530 | ||
c5d33754 | 7531 | /* Check what next non-whitespace character is so we can tell if there |
86f0974b | 7532 | is the required parens if we have a BIND(C). */ |
c5d33754 | 7533 | gfc_gobble_whitespace (); |
e0be6f02 | 7534 | peek_char = gfc_peek_ascii_char (); |
8db94b3b | 7535 | |
60e19868 | 7536 | if (!gfc_add_subroutine (&sym->attr, sym->name, NULL)) |
4ee9c684 | 7537 | return MATCH_ERROR; |
7538 | ||
7539 | if (gfc_match_formal_arglist (sym, 0, 1) != MATCH_YES) | |
7540 | return MATCH_ERROR; | |
7541 | ||
c5d33754 | 7542 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
7543 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7544 | not allowed for procedures. */ | |
7545 | if (sym->attr.is_bind_c == 1) | |
7546 | { | |
7547 | sym->attr.is_bind_c = 0; | |
7548 | if (sym->old_symbol != NULL) | |
7549 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7550 | "variables or common blocks", | |
7551 | &(sym->old_symbol->declared_at)); | |
7552 | else | |
7553 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7554 | "variables or common blocks", &gfc_current_locus); | |
7555 | } | |
75ae7f6c | 7556 | |
7557 | /* C binding names are not allowed for internal procedures. */ | |
7558 | if (gfc_current_state () == COMP_CONTAINS | |
7559 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
7560 | allow_binding_name = false; | |
7561 | else | |
7562 | allow_binding_name = true; | |
7563 | ||
c5d33754 | 7564 | /* Here, we are just checking if it has the bind(c) attribute, and if |
7565 | so, then we need to make sure it's all correct. If it doesn't, | |
7566 | we still need to continue matching the rest of the subroutine line. */ | |
75ae7f6c | 7567 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
c5d33754 | 7568 | if (is_bind_c == MATCH_ERROR) |
7569 | { | |
7570 | /* There was an attempt at the bind(c), but it was wrong. An | |
7571 | error message should have been printed w/in the gfc_match_bind_c | |
7572 | so here we'll just return the MATCH_ERROR. */ | |
7573 | return MATCH_ERROR; | |
7574 | } | |
7575 | ||
7576 | if (is_bind_c == MATCH_YES) | |
7577 | { | |
75ae7f6c | 7578 | /* The following is allowed in the Fortran 2008 draft. */ |
4518e961 | 7579 | if (gfc_current_state () == COMP_CONTAINS |
75ae7f6c | 7580 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
60e19868 | 7581 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
7582 | "at %L may not be specified for an internal " | |
7583 | "procedure", &gfc_current_locus)) | |
75ae7f6c | 7584 | return MATCH_ERROR; |
7585 | ||
c5d33754 | 7586 | if (peek_char != '(') |
7587 | { | |
7588 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
7589 | return MATCH_ERROR; | |
7590 | } | |
76e207a9 | 7591 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, |
60e19868 | 7592 | &(sym->declared_at), 1)) |
c5d33754 | 7593 | return MATCH_ERROR; |
7594 | } | |
8db94b3b | 7595 | |
4ee9c684 | 7596 | if (gfc_match_eos () != MATCH_YES) |
7597 | { | |
7598 | gfc_syntax_error (ST_SUBROUTINE); | |
7599 | return MATCH_ERROR; | |
7600 | } | |
7601 | ||
60e19868 | 7602 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
76e207a9 | 7603 | { |
7604 | if(!sym->attr.module_procedure) | |
7605 | return MATCH_ERROR; | |
7606 | else | |
7607 | gfc_error_check (); | |
7608 | } | |
4ee9c684 | 7609 | |
a34926ba | 7610 | /* Warn if it has the same name as an intrinsic. */ |
8290d53f | 7611 | do_warn_intrinsic_shadow (sym, false); |
a34926ba | 7612 | |
4ee9c684 | 7613 | return MATCH_YES; |
7614 | } | |
7615 | ||
7616 | ||
7136063b | 7617 | /* Check that the NAME identifier in a BIND attribute or statement |
7618 | is conform to C identifier rules. */ | |
7619 | ||
7620 | match | |
7621 | check_bind_name_identifier (char **name) | |
7622 | { | |
7623 | char *n = *name, *p; | |
7624 | ||
7625 | /* Remove leading spaces. */ | |
7626 | while (*n == ' ') | |
7627 | n++; | |
7628 | ||
7629 | /* On an empty string, free memory and set name to NULL. */ | |
7630 | if (*n == '\0') | |
7631 | { | |
7632 | free (*name); | |
7633 | *name = NULL; | |
7634 | return MATCH_YES; | |
7635 | } | |
7636 | ||
7637 | /* Remove trailing spaces. */ | |
7638 | p = n + strlen(n) - 1; | |
7639 | while (*p == ' ') | |
7640 | *(p--) = '\0'; | |
7641 | ||
7642 | /* Insert the identifier into the symbol table. */ | |
7643 | p = xstrdup (n); | |
7644 | free (*name); | |
7645 | *name = p; | |
7646 | ||
7647 | /* Now check that identifier is valid under C rules. */ | |
7648 | if (ISDIGIT (*p)) | |
7649 | { | |
7650 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
7651 | return MATCH_ERROR; | |
7652 | } | |
7653 | ||
7654 | for (; *p; p++) | |
7655 | if (!(ISALNUM (*p) || *p == '_' || *p == '$')) | |
7656 | { | |
7657 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
7658 | return MATCH_ERROR; | |
7659 | } | |
7660 | ||
7661 | return MATCH_YES; | |
7662 | } | |
7663 | ||
7664 | ||
c5d33754 | 7665 | /* Match a BIND(C) specifier, with the optional 'name=' specifier if |
7666 | given, and set the binding label in either the given symbol (if not | |
a0527218 | 7667 | NULL), or in the current_ts. The symbol may be NULL because we may |
c5d33754 | 7668 | encounter the BIND(C) before the declaration itself. Return |
7669 | MATCH_NO if what we're looking at isn't a BIND(C) specifier, | |
7670 | MATCH_ERROR if it is a BIND(C) clause but an error was encountered, | |
7671 | or MATCH_YES if the specifier was correct and the binding label and | |
7672 | bind(c) fields were set correctly for the given symbol or the | |
75ae7f6c | 7673 | current_ts. If allow_binding_name is false, no binding name may be |
7674 | given. */ | |
c5d33754 | 7675 | |
7676 | match | |
75ae7f6c | 7677 | gfc_match_bind_c (gfc_symbol *sym, bool allow_binding_name) |
c5d33754 | 7678 | { |
7136063b | 7679 | char *binding_label = NULL; |
7680 | gfc_expr *e = NULL; | |
c5d33754 | 7681 | |
8db94b3b | 7682 | /* Initialize the flag that specifies whether we encountered a NAME= |
c5d33754 | 7683 | specifier or not. */ |
7684 | has_name_equals = 0; | |
7685 | ||
c5d33754 | 7686 | /* This much we have to be able to match, in this order, if |
7687 | there is a bind(c) label. */ | |
7688 | if (gfc_match (" bind ( c ") != MATCH_YES) | |
7689 | return MATCH_NO; | |
7690 | ||
7691 | /* Now see if there is a binding label, or if we've reached the | |
7692 | end of the bind(c) attribute without one. */ | |
7693 | if (gfc_match_char (',') == MATCH_YES) | |
7694 | { | |
7695 | if (gfc_match (" name = ") != MATCH_YES) | |
7696 | { | |
7697 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
7698 | "at %C"); | |
7699 | /* should give an error message here */ | |
7700 | return MATCH_ERROR; | |
7701 | } | |
7702 | ||
7703 | has_name_equals = 1; | |
7704 | ||
7136063b | 7705 | if (gfc_match_init_expr (&e) != MATCH_YES) |
7706 | { | |
7707 | gfc_free_expr (e); | |
7708 | return MATCH_ERROR; | |
7709 | } | |
8db94b3b | 7710 | |
7136063b | 7711 | if (!gfc_simplify_expr(e, 0)) |
c5d33754 | 7712 | { |
7136063b | 7713 | gfc_error ("NAME= specifier at %C should be a constant expression"); |
7714 | gfc_free_expr (e); | |
7715 | return MATCH_ERROR; | |
c5d33754 | 7716 | } |
7136063b | 7717 | |
7718 | if (e->expr_type != EXPR_CONSTANT || e->ts.type != BT_CHARACTER | |
7719 | || e->ts.kind != gfc_default_character_kind || e->rank != 0) | |
c5d33754 | 7720 | { |
7136063b | 7721 | gfc_error ("NAME= specifier at %C should be a scalar of " |
7722 | "default character kind"); | |
7723 | gfc_free_expr(e); | |
7724 | return MATCH_ERROR; | |
c5d33754 | 7725 | } |
7136063b | 7726 | |
7727 | // Get a C string from the Fortran string constant | |
7728 | binding_label = gfc_widechar_to_char (e->value.character.string, | |
7729 | e->value.character.length); | |
7730 | gfc_free_expr(e); | |
7731 | ||
7732 | // Check that it is valid (old gfc_match_name_C) | |
7733 | if (check_bind_name_identifier (&binding_label) != MATCH_YES) | |
7734 | return MATCH_ERROR; | |
7735 | } | |
c5d33754 | 7736 | |
7737 | /* Get the required right paren. */ | |
7738 | if (gfc_match_char (')') != MATCH_YES) | |
7739 | { | |
7740 | gfc_error ("Missing closing paren for binding label at %C"); | |
7741 | return MATCH_ERROR; | |
7742 | } | |
7743 | ||
75ae7f6c | 7744 | if (has_name_equals && !allow_binding_name) |
7745 | { | |
7746 | gfc_error ("No binding name is allowed in BIND(C) at %C"); | |
7747 | return MATCH_ERROR; | |
7748 | } | |
7749 | ||
7750 | if (has_name_equals && sym != NULL && sym->attr.dummy) | |
7751 | { | |
7752 | gfc_error ("For dummy procedure %s, no binding name is " | |
7753 | "allowed in BIND(C) at %C", sym->name); | |
7754 | return MATCH_ERROR; | |
7755 | } | |
7756 | ||
7757 | ||
c5d33754 | 7758 | /* Save the binding label to the symbol. If sym is null, we're |
7759 | probably matching the typespec attributes of a declaration and | |
7760 | haven't gotten the name yet, and therefore, no symbol yet. */ | |
7b2060ba | 7761 | if (binding_label) |
c5d33754 | 7762 | { |
7763 | if (sym != NULL) | |
7b2060ba | 7764 | sym->binding_label = binding_label; |
c5d33754 | 7765 | else |
7b2060ba | 7766 | curr_binding_label = binding_label; |
c5d33754 | 7767 | } |
75ae7f6c | 7768 | else if (allow_binding_name) |
c5d33754 | 7769 | { |
7770 | /* No binding label, but if symbol isn't null, we | |
75ae7f6c | 7771 | can set the label for it here. |
7772 | If name="" or allow_binding_name is false, no C binding name is | |
293d72e0 | 7773 | created. */ |
c5d33754 | 7774 | if (sym != NULL && sym->name != NULL && has_name_equals == 0) |
7b2060ba | 7775 | sym->binding_label = IDENTIFIER_POINTER (get_identifier (sym->name)); |
c5d33754 | 7776 | } |
94fa7146 | 7777 | |
5cf92482 | 7778 | if (has_name_equals && gfc_current_state () == COMP_INTERFACE |
7779 | && current_interface.type == INTERFACE_ABSTRACT) | |
94fa7146 | 7780 | { |
7781 | gfc_error ("NAME not allowed on BIND(C) for ABSTRACT INTERFACE at %C"); | |
7782 | return MATCH_ERROR; | |
7783 | } | |
7784 | ||
c5d33754 | 7785 | return MATCH_YES; |
7786 | } | |
7787 | ||
7788 | ||
231e961a | 7789 | /* Return nonzero if we're currently compiling a contained procedure. */ |
c0985832 | 7790 | |
7791 | static int | |
7792 | contained_procedure (void) | |
7793 | { | |
1c343287 | 7794 | gfc_state_data *s = gfc_state_stack; |
c0985832 | 7795 | |
1c343287 | 7796 | if ((s->state == COMP_SUBROUTINE || s->state == COMP_FUNCTION) |
7797 | && s->previous != NULL && s->previous->state == COMP_CONTAINS) | |
7798 | return 1; | |
c0985832 | 7799 | |
7800 | return 0; | |
7801 | } | |
7802 | ||
e14bee04 | 7803 | /* Set the kind of each enumerator. The kind is selected such that it is |
3b6a4b41 | 7804 | interoperable with the corresponding C enumeration type, making |
7805 | sure that -fshort-enums is honored. */ | |
7806 | ||
7807 | static void | |
7808 | set_enum_kind(void) | |
7809 | { | |
7810 | enumerator_history *current_history = NULL; | |
7811 | int kind; | |
7812 | int i; | |
7813 | ||
7814 | if (max_enum == NULL || enum_history == NULL) | |
7815 | return; | |
7816 | ||
6f092e31 | 7817 | if (!flag_short_enums) |
e14bee04 | 7818 | return; |
7819 | ||
3b6a4b41 | 7820 | i = 0; |
7821 | do | |
7822 | { | |
7823 | kind = gfc_integer_kinds[i++].kind; | |
7824 | } | |
e14bee04 | 7825 | while (kind < gfc_c_int_kind |
3b6a4b41 | 7826 | && gfc_check_integer_range (max_enum->initializer->value.integer, |
7827 | kind) != ARITH_OK); | |
7828 | ||
7829 | current_history = enum_history; | |
7830 | while (current_history != NULL) | |
7831 | { | |
7832 | current_history->sym->ts.kind = kind; | |
7833 | current_history = current_history->next; | |
7834 | } | |
7835 | } | |
7836 | ||
1a9745d2 | 7837 | |
4ee9c684 | 7838 | /* Match any of the various end-block statements. Returns the type of |
6a7084d7 | 7839 | END to the caller. The END INTERFACE, END IF, END DO, END SELECT |
7840 | and END BLOCK statements cannot be replaced by a single END statement. */ | |
4ee9c684 | 7841 | |
7842 | match | |
1a9745d2 | 7843 | gfc_match_end (gfc_statement *st) |
4ee9c684 | 7844 | { |
7845 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7846 | gfc_compile_state state; | |
7847 | locus old_loc; | |
7848 | const char *block_name; | |
7849 | const char *target; | |
c0985832 | 7850 | int eos_ok; |
4ee9c684 | 7851 | match m; |
9e5e87d9 | 7852 | gfc_namespace *parent_ns, *ns, *prev_ns; |
7853 | gfc_namespace **nsp; | |
6ade726e | 7854 | bool abreviated_modproc_decl = false; |
cc7124a6 | 7855 | bool got_matching_end = false; |
4ee9c684 | 7856 | |
cbb9e6aa | 7857 | old_loc = gfc_current_locus; |
4ee9c684 | 7858 | if (gfc_match ("end") != MATCH_YES) |
7859 | return MATCH_NO; | |
7860 | ||
7861 | state = gfc_current_state (); | |
1a9745d2 | 7862 | block_name = gfc_current_block () == NULL |
7863 | ? NULL : gfc_current_block ()->name; | |
4ee9c684 | 7864 | |
d18a512a | 7865 | switch (state) |
4ee9c684 | 7866 | { |
d18a512a | 7867 | case COMP_ASSOCIATE: |
7868 | case COMP_BLOCK: | |
ea9e8242 | 7869 | if (gfc_str_startswith (block_name, "block@")) |
d18a512a | 7870 | block_name = NULL; |
7871 | break; | |
7872 | ||
7873 | case COMP_CONTAINS: | |
7874 | case COMP_DERIVED_CONTAINS: | |
4ee9c684 | 7875 | state = gfc_state_stack->previous->state; |
1a9745d2 | 7876 | block_name = gfc_state_stack->previous->sym == NULL |
7877 | ? NULL : gfc_state_stack->previous->sym->name; | |
6ade726e | 7878 | abreviated_modproc_decl = gfc_state_stack->previous->sym |
7879 | && gfc_state_stack->previous->sym->abr_modproc_decl; | |
d18a512a | 7880 | break; |
7881 | ||
7882 | default: | |
7883 | break; | |
4ee9c684 | 7884 | } |
7885 | ||
6ade726e | 7886 | if (!abreviated_modproc_decl) |
7887 | abreviated_modproc_decl = gfc_current_block () | |
7888 | && gfc_current_block ()->abr_modproc_decl; | |
4b8eb6ca | 7889 | |
4ee9c684 | 7890 | switch (state) |
7891 | { | |
7892 | case COMP_NONE: | |
7893 | case COMP_PROGRAM: | |
7894 | *st = ST_END_PROGRAM; | |
7895 | target = " program"; | |
c0985832 | 7896 | eos_ok = 1; |
4ee9c684 | 7897 | break; |
7898 | ||
7899 | case COMP_SUBROUTINE: | |
7900 | *st = ST_END_SUBROUTINE; | |
4b8eb6ca | 7901 | if (!abreviated_modproc_decl) |
4ee9c684 | 7902 | target = " subroutine"; |
4b8eb6ca | 7903 | else |
7904 | target = " procedure"; | |
c0985832 | 7905 | eos_ok = !contained_procedure (); |
4ee9c684 | 7906 | break; |
7907 | ||
7908 | case COMP_FUNCTION: | |
7909 | *st = ST_END_FUNCTION; | |
4b8eb6ca | 7910 | if (!abreviated_modproc_decl) |
4ee9c684 | 7911 | target = " function"; |
4b8eb6ca | 7912 | else |
7913 | target = " procedure"; | |
c0985832 | 7914 | eos_ok = !contained_procedure (); |
4ee9c684 | 7915 | break; |
7916 | ||
7917 | case COMP_BLOCK_DATA: | |
7918 | *st = ST_END_BLOCK_DATA; | |
7919 | target = " block data"; | |
c0985832 | 7920 | eos_ok = 1; |
4ee9c684 | 7921 | break; |
7922 | ||
7923 | case COMP_MODULE: | |
7924 | *st = ST_END_MODULE; | |
7925 | target = " module"; | |
c0985832 | 7926 | eos_ok = 1; |
4ee9c684 | 7927 | break; |
7928 | ||
4b8eb6ca | 7929 | case COMP_SUBMODULE: |
7930 | *st = ST_END_SUBMODULE; | |
7931 | target = " submodule"; | |
7932 | eos_ok = 1; | |
7933 | break; | |
7934 | ||
4ee9c684 | 7935 | case COMP_INTERFACE: |
7936 | *st = ST_END_INTERFACE; | |
7937 | target = " interface"; | |
c0985832 | 7938 | eos_ok = 0; |
4ee9c684 | 7939 | break; |
7940 | ||
d7cd448a | 7941 | case COMP_MAP: |
7942 | *st = ST_END_MAP; | |
7943 | target = " map"; | |
7944 | eos_ok = 0; | |
7945 | break; | |
7946 | ||
7947 | case COMP_UNION: | |
7948 | *st = ST_END_UNION; | |
7949 | target = " union"; | |
7950 | eos_ok = 0; | |
7951 | break; | |
7952 | ||
7953 | case COMP_STRUCTURE: | |
7954 | *st = ST_END_STRUCTURE; | |
7955 | target = " structure"; | |
7956 | eos_ok = 0; | |
7957 | break; | |
7958 | ||
4ee9c684 | 7959 | case COMP_DERIVED: |
7fd88f6e | 7960 | case COMP_DERIVED_CONTAINS: |
4ee9c684 | 7961 | *st = ST_END_TYPE; |
7962 | target = " type"; | |
c0985832 | 7963 | eos_ok = 0; |
4ee9c684 | 7964 | break; |
7965 | ||
d18a512a | 7966 | case COMP_ASSOCIATE: |
7967 | *st = ST_END_ASSOCIATE; | |
7968 | target = " associate"; | |
7969 | eos_ok = 0; | |
7970 | break; | |
7971 | ||
6a7084d7 | 7972 | case COMP_BLOCK: |
7973 | *st = ST_END_BLOCK; | |
7974 | target = " block"; | |
7975 | eos_ok = 0; | |
7976 | break; | |
7977 | ||
4ee9c684 | 7978 | case COMP_IF: |
7979 | *st = ST_ENDIF; | |
7980 | target = " if"; | |
c0985832 | 7981 | eos_ok = 0; |
4ee9c684 | 7982 | break; |
7983 | ||
7984 | case COMP_DO: | |
55ea8666 | 7985 | case COMP_DO_CONCURRENT: |
4ee9c684 | 7986 | *st = ST_ENDDO; |
7987 | target = " do"; | |
c0985832 | 7988 | eos_ok = 0; |
4ee9c684 | 7989 | break; |
7990 | ||
c6cd3066 | 7991 | case COMP_CRITICAL: |
7992 | *st = ST_END_CRITICAL; | |
7993 | target = " critical"; | |
7994 | eos_ok = 0; | |
7995 | break; | |
7996 | ||
4ee9c684 | 7997 | case COMP_SELECT: |
1de1b1a9 | 7998 | case COMP_SELECT_TYPE: |
4ee9c684 | 7999 | *st = ST_END_SELECT; |
8000 | target = " select"; | |
c0985832 | 8001 | eos_ok = 0; |
4ee9c684 | 8002 | break; |
8003 | ||
8004 | case COMP_FORALL: | |
8005 | *st = ST_END_FORALL; | |
8006 | target = " forall"; | |
c0985832 | 8007 | eos_ok = 0; |
4ee9c684 | 8008 | break; |
8009 | ||
8010 | case COMP_WHERE: | |
8011 | *st = ST_END_WHERE; | |
8012 | target = " where"; | |
c0985832 | 8013 | eos_ok = 0; |
4ee9c684 | 8014 | break; |
8015 | ||
3b6a4b41 | 8016 | case COMP_ENUM: |
8017 | *st = ST_END_ENUM; | |
8018 | target = " enum"; | |
8019 | eos_ok = 0; | |
8020 | last_initializer = NULL; | |
8021 | set_enum_kind (); | |
8022 | gfc_free_enum_history (); | |
8023 | break; | |
8024 | ||
4ee9c684 | 8025 | default: |
8026 | gfc_error ("Unexpected END statement at %C"); | |
8027 | goto cleanup; | |
8028 | } | |
8029 | ||
8d779aef | 8030 | old_loc = gfc_current_locus; |
4ee9c684 | 8031 | if (gfc_match_eos () == MATCH_YES) |
8032 | { | |
4b20e9cf | 8033 | if (!eos_ok && (*st == ST_END_SUBROUTINE || *st == ST_END_FUNCTION)) |
8034 | { | |
60e19868 | 8035 | if (!gfc_notify_std (GFC_STD_F2008, "END statement " |
76e207a9 | 8036 | "instead of %s statement at %L", |
4b8eb6ca | 8037 | abreviated_modproc_decl ? "END PROCEDURE" |
8038 | : gfc_ascii_statement(*st), &old_loc)) | |
4b20e9cf | 8039 | goto cleanup; |
8040 | } | |
8041 | else if (!eos_ok) | |
4ee9c684 | 8042 | { |
f6d0e37a | 8043 | /* We would have required END [something]. */ |
d197c9ee | 8044 | gfc_error ("%s statement expected at %L", |
8045 | gfc_ascii_statement (*st), &old_loc); | |
4ee9c684 | 8046 | goto cleanup; |
8047 | } | |
8048 | ||
8049 | return MATCH_YES; | |
8050 | } | |
8051 | ||
8052 | /* Verify that we've got the sort of end-block that we're expecting. */ | |
8053 | if (gfc_match (target) != MATCH_YES) | |
8054 | { | |
4b8eb6ca | 8055 | gfc_error ("Expecting %s statement at %L", abreviated_modproc_decl |
8056 | ? "END PROCEDURE" : gfc_ascii_statement(*st), &old_loc); | |
4ee9c684 | 8057 | goto cleanup; |
8058 | } | |
cc7124a6 | 8059 | else |
8060 | got_matching_end = true; | |
4ee9c684 | 8061 | |
8d779aef | 8062 | old_loc = gfc_current_locus; |
4ee9c684 | 8063 | /* If we're at the end, make sure a block name wasn't required. */ |
8064 | if (gfc_match_eos () == MATCH_YES) | |
8065 | { | |
8066 | ||
0d0ce415 | 8067 | if (*st != ST_ENDDO && *st != ST_ENDIF && *st != ST_END_SELECT |
c6cd3066 | 8068 | && *st != ST_END_FORALL && *st != ST_END_WHERE && *st != ST_END_BLOCK |
d18a512a | 8069 | && *st != ST_END_ASSOCIATE && *st != ST_END_CRITICAL) |
4ee9c684 | 8070 | return MATCH_YES; |
8071 | ||
6a7084d7 | 8072 | if (!block_name) |
4ee9c684 | 8073 | return MATCH_YES; |
8074 | ||
716da296 | 8075 | gfc_error ("Expected block name of %qs in %s statement at %L", |
8d779aef | 8076 | block_name, gfc_ascii_statement (*st), &old_loc); |
4ee9c684 | 8077 | |
8078 | return MATCH_ERROR; | |
8079 | } | |
8080 | ||
8081 | /* END INTERFACE has a special handler for its several possible endings. */ | |
8082 | if (*st == ST_END_INTERFACE) | |
8083 | return gfc_match_end_interface (); | |
8084 | ||
f6d0e37a | 8085 | /* We haven't hit the end of statement, so what is left must be an |
8086 | end-name. */ | |
4ee9c684 | 8087 | m = gfc_match_space (); |
8088 | if (m == MATCH_YES) | |
8089 | m = gfc_match_name (name); | |
8090 | ||
8091 | if (m == MATCH_NO) | |
8092 | gfc_error ("Expected terminating name at %C"); | |
8093 | if (m != MATCH_YES) | |
8094 | goto cleanup; | |
8095 | ||
8096 | if (block_name == NULL) | |
8097 | goto syntax; | |
8098 | ||
df8f279f | 8099 | /* We have to pick out the declared submodule name from the composite |
8100 | required by F2008:11.2.3 para 2, which ends in the declared name. */ | |
8101 | if (state == COMP_SUBMODULE) | |
8102 | block_name = strchr (block_name, '.') + 1; | |
8103 | ||
1e057e9b | 8104 | if (strcmp (name, block_name) != 0 && strcmp (block_name, "ppr@") != 0) |
4ee9c684 | 8105 | { |
716da296 | 8106 | gfc_error ("Expected label %qs for %s statement at %C", block_name, |
4ee9c684 | 8107 | gfc_ascii_statement (*st)); |
8108 | goto cleanup; | |
8109 | } | |
1e057e9b | 8110 | /* Procedure pointer as function result. */ |
8111 | else if (strcmp (block_name, "ppr@") == 0 | |
8112 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) != 0) | |
8113 | { | |
716da296 | 8114 | gfc_error ("Expected label %qs for %s statement at %C", |
1e057e9b | 8115 | gfc_current_block ()->ns->proc_name->name, |
8116 | gfc_ascii_statement (*st)); | |
8117 | goto cleanup; | |
8118 | } | |
4ee9c684 | 8119 | |
8120 | if (gfc_match_eos () == MATCH_YES) | |
8121 | return MATCH_YES; | |
8122 | ||
8123 | syntax: | |
8124 | gfc_syntax_error (*st); | |
8125 | ||
8126 | cleanup: | |
cbb9e6aa | 8127 | gfc_current_locus = old_loc; |
9e5e87d9 | 8128 | |
8129 | /* If we are missing an END BLOCK, we created a half-ready namespace. | |
8130 | Remove it from the parent namespace's sibling list. */ | |
8131 | ||
cc7124a6 | 8132 | while (state == COMP_BLOCK && !got_matching_end) |
9e5e87d9 | 8133 | { |
8134 | parent_ns = gfc_current_ns->parent; | |
8135 | ||
8136 | nsp = &(gfc_state_stack->previous->tail->ext.block.ns); | |
8137 | ||
8138 | prev_ns = NULL; | |
8139 | ns = *nsp; | |
8140 | while (ns) | |
8141 | { | |
8142 | if (ns == gfc_current_ns) | |
8143 | { | |
8144 | if (prev_ns == NULL) | |
8145 | *nsp = NULL; | |
8146 | else | |
8147 | prev_ns->sibling = ns->sibling; | |
8148 | } | |
8149 | prev_ns = ns; | |
8150 | ns = ns->sibling; | |
8151 | } | |
cc7124a6 | 8152 | |
9e5e87d9 | 8153 | gfc_free_namespace (gfc_current_ns); |
8154 | gfc_current_ns = parent_ns; | |
8097c1a6 | 8155 | gfc_state_stack = gfc_state_stack->previous; |
8156 | state = gfc_current_state (); | |
9e5e87d9 | 8157 | } |
8158 | ||
4ee9c684 | 8159 | return MATCH_ERROR; |
8160 | } | |
8161 | ||
8162 | ||
8163 | ||
8164 | /***************** Attribute declaration statements ****************/ | |
8165 | ||
8166 | /* Set the attribute of a single variable. */ | |
8167 | ||
8168 | static match | |
8169 | attr_decl1 (void) | |
8170 | { | |
8171 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8172 | gfc_array_spec *as; | |
75e5ecf3 | 8173 | |
8174 | /* Workaround -Wmaybe-uninitialized false positive during | |
8175 | profiledbootstrap by initializing them. */ | |
8176 | gfc_symbol *sym = NULL; | |
4ee9c684 | 8177 | locus var_locus; |
8178 | match m; | |
8179 | ||
8180 | as = NULL; | |
8181 | ||
8182 | m = gfc_match_name (name); | |
8183 | if (m != MATCH_YES) | |
8184 | goto cleanup; | |
8185 | ||
36b0a1b0 | 8186 | if (find_special (name, &sym, false)) |
4ee9c684 | 8187 | return MATCH_ERROR; |
8188 | ||
60e19868 | 8189 | if (!check_function_name (name)) |
f3e89339 | 8190 | { |
8191 | m = MATCH_ERROR; | |
8192 | goto cleanup; | |
8193 | } | |
8db94b3b | 8194 | |
cbb9e6aa | 8195 | var_locus = gfc_current_locus; |
4ee9c684 | 8196 | |
8197 | /* Deal with possible array specification for certain attributes. */ | |
8198 | if (current_attr.dimension | |
aff518b0 | 8199 | || current_attr.codimension |
4ee9c684 | 8200 | || current_attr.allocatable |
8201 | || current_attr.pointer | |
8202 | || current_attr.target) | |
8203 | { | |
aff518b0 | 8204 | m = gfc_match_array_spec (&as, !current_attr.codimension, |
8205 | !current_attr.dimension | |
8206 | && !current_attr.pointer | |
8207 | && !current_attr.target); | |
4ee9c684 | 8208 | if (m == MATCH_ERROR) |
8209 | goto cleanup; | |
8210 | ||
8211 | if (current_attr.dimension && m == MATCH_NO) | |
8212 | { | |
1a9745d2 | 8213 | gfc_error ("Missing array specification at %L in DIMENSION " |
8214 | "statement", &var_locus); | |
4ee9c684 | 8215 | m = MATCH_ERROR; |
8216 | goto cleanup; | |
8217 | } | |
8218 | ||
13aebeb0 | 8219 | if (current_attr.dimension && sym->value) |
8220 | { | |
8221 | gfc_error ("Dimensions specified for %s at %L after its " | |
d0abd9e0 | 8222 | "initialization", sym->name, &var_locus); |
13aebeb0 | 8223 | m = MATCH_ERROR; |
8224 | goto cleanup; | |
8225 | } | |
8226 | ||
aff518b0 | 8227 | if (current_attr.codimension && m == MATCH_NO) |
8228 | { | |
8229 | gfc_error ("Missing array specification at %L in CODIMENSION " | |
8230 | "statement", &var_locus); | |
8231 | m = MATCH_ERROR; | |
8232 | goto cleanup; | |
8233 | } | |
8234 | ||
4ee9c684 | 8235 | if ((current_attr.allocatable || current_attr.pointer) |
8236 | && (m == MATCH_YES) && (as->type != AS_DEFERRED)) | |
8237 | { | |
1a9745d2 | 8238 | gfc_error ("Array specification must be deferred at %L", &var_locus); |
4ee9c684 | 8239 | m = MATCH_ERROR; |
8240 | goto cleanup; | |
8241 | } | |
8242 | } | |
8243 | ||
b3704193 | 8244 | /* Update symbol table. DIMENSION attribute is set in |
8245 | gfc_set_array_spec(). For CLASS variables, this must be applied | |
607ae689 | 8246 | to the first component, or '_data' field. */ |
a33fbb6f | 8247 | if (sym->ts.type == BT_CLASS && sym->ts.u.derived->attr.is_class) |
4ee9c684 | 8248 | { |
60e19868 | 8249 | if (!gfc_copy_attr (&CLASS_DATA(sym)->attr, ¤t_attr, &var_locus)) |
b3704193 | 8250 | { |
8251 | m = MATCH_ERROR; | |
8252 | goto cleanup; | |
8253 | } | |
b3704193 | 8254 | } |
8255 | else | |
8256 | { | |
aff518b0 | 8257 | if (current_attr.dimension == 0 && current_attr.codimension == 0 |
60e19868 | 8258 | && !gfc_copy_attr (&sym->attr, ¤t_attr, &var_locus)) |
b3704193 | 8259 | { |
8260 | m = MATCH_ERROR; | |
8261 | goto cleanup; | |
8262 | } | |
4ee9c684 | 8263 | } |
8db94b3b | 8264 | |
fa102e56 | 8265 | if (sym->ts.type == BT_CLASS |
e8393d49 | 8266 | && !gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as)) |
29dae2bf | 8267 | { |
8268 | m = MATCH_ERROR; | |
8269 | goto cleanup; | |
8270 | } | |
4ee9c684 | 8271 | |
60e19868 | 8272 | if (!gfc_set_array_spec (sym, as, &var_locus)) |
4ee9c684 | 8273 | { |
8274 | m = MATCH_ERROR; | |
8275 | goto cleanup; | |
8276 | } | |
e14bee04 | 8277 | |
b549d2a5 | 8278 | if (sym->attr.cray_pointee && sym->as != NULL) |
8279 | { | |
8280 | /* Fix the array spec. */ | |
8db94b3b | 8281 | m = gfc_mod_pointee_as (sym->as); |
b549d2a5 | 8282 | if (m == MATCH_ERROR) |
8283 | goto cleanup; | |
8284 | } | |
4ee9c684 | 8285 | |
60e19868 | 8286 | if (!gfc_add_attribute (&sym->attr, &var_locus)) |
14efb9b7 | 8287 | { |
8288 | m = MATCH_ERROR; | |
8289 | goto cleanup; | |
8290 | } | |
8291 | ||
4ee9c684 | 8292 | if ((current_attr.external || current_attr.intrinsic) |
8293 | && sym->attr.flavor != FL_PROCEDURE | |
60e19868 | 8294 | && !gfc_add_flavor (&sym->attr, FL_PROCEDURE, sym->name, NULL)) |
4ee9c684 | 8295 | { |
8296 | m = MATCH_ERROR; | |
8297 | goto cleanup; | |
8298 | } | |
8299 | ||
1e057e9b | 8300 | add_hidden_procptr_result (sym); |
8301 | ||
4ee9c684 | 8302 | return MATCH_YES; |
8303 | ||
8304 | cleanup: | |
8305 | gfc_free_array_spec (as); | |
8306 | return m; | |
8307 | } | |
8308 | ||
8309 | ||
8310 | /* Generic attribute declaration subroutine. Used for attributes that | |
8311 | just have a list of names. */ | |
8312 | ||
8313 | static match | |
8314 | attr_decl (void) | |
8315 | { | |
8316 | match m; | |
8317 | ||
8318 | /* Gobble the optional double colon, by simply ignoring the result | |
8319 | of gfc_match(). */ | |
8320 | gfc_match (" ::"); | |
8321 | ||
8322 | for (;;) | |
8323 | { | |
8324 | m = attr_decl1 (); | |
8325 | if (m != MATCH_YES) | |
8326 | break; | |
8327 | ||
8328 | if (gfc_match_eos () == MATCH_YES) | |
8329 | { | |
8330 | m = MATCH_YES; | |
8331 | break; | |
8332 | } | |
8333 | ||
8334 | if (gfc_match_char (',') != MATCH_YES) | |
8335 | { | |
8336 | gfc_error ("Unexpected character in variable list at %C"); | |
8337 | m = MATCH_ERROR; | |
8338 | break; | |
8339 | } | |
8340 | } | |
8341 | ||
8342 | return m; | |
8343 | } | |
8344 | ||
8345 | ||
b549d2a5 | 8346 | /* This routine matches Cray Pointer declarations of the form: |
8347 | pointer ( <pointer>, <pointee> ) | |
8348 | or | |
e14bee04 | 8349 | pointer ( <pointer1>, <pointee1> ), ( <pointer2>, <pointee2> ), ... |
8350 | The pointer, if already declared, should be an integer. Otherwise, we | |
b549d2a5 | 8351 | set it as BT_INTEGER with kind gfc_index_integer_kind. The pointee may |
8352 | be either a scalar, or an array declaration. No space is allocated for | |
e14bee04 | 8353 | the pointee. For the statement |
b549d2a5 | 8354 | pointer (ipt, ar(10)) |
8355 | any subsequent uses of ar will be translated (in C-notation) as | |
e14bee04 | 8356 | ar(i) => ((<type> *) ipt)(i) |
b7bf3f81 | 8357 | After gimplification, pointee variable will disappear in the code. */ |
b549d2a5 | 8358 | |
8359 | static match | |
8360 | cray_pointer_decl (void) | |
8361 | { | |
8362 | match m; | |
aff518b0 | 8363 | gfc_array_spec *as = NULL; |
b549d2a5 | 8364 | gfc_symbol *cptr; /* Pointer symbol. */ |
8365 | gfc_symbol *cpte; /* Pointee symbol. */ | |
8366 | locus var_locus; | |
8367 | bool done = false; | |
8368 | ||
8369 | while (!done) | |
8370 | { | |
8371 | if (gfc_match_char ('(') != MATCH_YES) | |
8372 | { | |
0d2b3c9c | 8373 | gfc_error ("Expected %<(%> at %C"); |
e14bee04 | 8374 | return MATCH_ERROR; |
b549d2a5 | 8375 | } |
e14bee04 | 8376 | |
b549d2a5 | 8377 | /* Match pointer. */ |
8378 | var_locus = gfc_current_locus; | |
8379 | gfc_clear_attr (¤t_attr); | |
8380 | gfc_add_cray_pointer (¤t_attr, &var_locus); | |
8381 | current_ts.type = BT_INTEGER; | |
8382 | current_ts.kind = gfc_index_integer_kind; | |
8383 | ||
e14bee04 | 8384 | m = gfc_match_symbol (&cptr, 0); |
b549d2a5 | 8385 | if (m != MATCH_YES) |
8386 | { | |
8387 | gfc_error ("Expected variable name at %C"); | |
8388 | return m; | |
8389 | } | |
e14bee04 | 8390 | |
60e19868 | 8391 | if (!gfc_add_cray_pointer (&cptr->attr, &var_locus)) |
b549d2a5 | 8392 | return MATCH_ERROR; |
8393 | ||
e14bee04 | 8394 | gfc_set_sym_referenced (cptr); |
b549d2a5 | 8395 | |
8396 | if (cptr->ts.type == BT_UNKNOWN) /* Override the type, if necessary. */ | |
8397 | { | |
8398 | cptr->ts.type = BT_INTEGER; | |
e14bee04 | 8399 | cptr->ts.kind = gfc_index_integer_kind; |
b549d2a5 | 8400 | } |
8401 | else if (cptr->ts.type != BT_INTEGER) | |
8402 | { | |
7698a624 | 8403 | gfc_error ("Cray pointer at %C must be an integer"); |
b549d2a5 | 8404 | return MATCH_ERROR; |
8405 | } | |
8406 | else if (cptr->ts.kind < gfc_index_integer_kind) | |
6f521718 | 8407 | gfc_warning (0, "Cray pointer at %C has %d bytes of precision;" |
7698a624 | 8408 | " memory addresses require %d bytes", |
1a9745d2 | 8409 | cptr->ts.kind, gfc_index_integer_kind); |
b549d2a5 | 8410 | |
8411 | if (gfc_match_char (',') != MATCH_YES) | |
8412 | { | |
8413 | gfc_error ("Expected \",\" at %C"); | |
e14bee04 | 8414 | return MATCH_ERROR; |
b549d2a5 | 8415 | } |
8416 | ||
e14bee04 | 8417 | /* Match Pointee. */ |
b549d2a5 | 8418 | var_locus = gfc_current_locus; |
8419 | gfc_clear_attr (¤t_attr); | |
8420 | gfc_add_cray_pointee (¤t_attr, &var_locus); | |
8421 | current_ts.type = BT_UNKNOWN; | |
8422 | current_ts.kind = 0; | |
8423 | ||
8424 | m = gfc_match_symbol (&cpte, 0); | |
8425 | if (m != MATCH_YES) | |
8426 | { | |
8427 | gfc_error ("Expected variable name at %C"); | |
8428 | return m; | |
8429 | } | |
e14bee04 | 8430 | |
b549d2a5 | 8431 | /* Check for an optional array spec. */ |
aff518b0 | 8432 | m = gfc_match_array_spec (&as, true, false); |
b549d2a5 | 8433 | if (m == MATCH_ERROR) |
8434 | { | |
8435 | gfc_free_array_spec (as); | |
8436 | return m; | |
8437 | } | |
8438 | else if (m == MATCH_NO) | |
8439 | { | |
8440 | gfc_free_array_spec (as); | |
8441 | as = NULL; | |
8db94b3b | 8442 | } |
b549d2a5 | 8443 | |
60e19868 | 8444 | if (!gfc_add_cray_pointee (&cpte->attr, &var_locus)) |
b549d2a5 | 8445 | return MATCH_ERROR; |
8446 | ||
8447 | gfc_set_sym_referenced (cpte); | |
8448 | ||
8449 | if (cpte->as == NULL) | |
8450 | { | |
60e19868 | 8451 | if (!gfc_set_array_spec (cpte, as, &var_locus)) |
b549d2a5 | 8452 | gfc_internal_error ("Couldn't set Cray pointee array spec."); |
8453 | } | |
8454 | else if (as != NULL) | |
8455 | { | |
7698a624 | 8456 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
b549d2a5 | 8457 | gfc_free_array_spec (as); |
8458 | return MATCH_ERROR; | |
8459 | } | |
8db94b3b | 8460 | |
b549d2a5 | 8461 | as = NULL; |
8db94b3b | 8462 | |
b549d2a5 | 8463 | if (cpte->as != NULL) |
8464 | { | |
8465 | /* Fix array spec. */ | |
8466 | m = gfc_mod_pointee_as (cpte->as); | |
8467 | if (m == MATCH_ERROR) | |
8468 | return m; | |
8db94b3b | 8469 | } |
8470 | ||
b549d2a5 | 8471 | /* Point the Pointee at the Pointer. */ |
b7bf3f81 | 8472 | cpte->cp_pointer = cptr; |
b549d2a5 | 8473 | |
8474 | if (gfc_match_char (')') != MATCH_YES) | |
8475 | { | |
8476 | gfc_error ("Expected \")\" at %C"); | |
8db94b3b | 8477 | return MATCH_ERROR; |
b549d2a5 | 8478 | } |
8479 | m = gfc_match_char (','); | |
8480 | if (m != MATCH_YES) | |
8481 | done = true; /* Stop searching for more declarations. */ | |
8482 | ||
8483 | } | |
8db94b3b | 8484 | |
b549d2a5 | 8485 | if (m == MATCH_ERROR /* Failed when trying to find ',' above. */ |
8486 | || gfc_match_eos () != MATCH_YES) | |
8487 | { | |
0d2b3c9c | 8488 | gfc_error ("Expected %<,%> or end of statement at %C"); |
b549d2a5 | 8489 | return MATCH_ERROR; |
8490 | } | |
8491 | return MATCH_YES; | |
8492 | } | |
8493 | ||
8494 | ||
4ee9c684 | 8495 | match |
8496 | gfc_match_external (void) | |
8497 | { | |
8498 | ||
8499 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 8500 | current_attr.external = 1; |
4ee9c684 | 8501 | |
8502 | return attr_decl (); | |
8503 | } | |
8504 | ||
8505 | ||
4ee9c684 | 8506 | match |
8507 | gfc_match_intent (void) | |
8508 | { | |
8509 | sym_intent intent; | |
8510 | ||
6a7084d7 | 8511 | /* This is not allowed within a BLOCK construct! */ |
8512 | if (gfc_current_state () == COMP_BLOCK) | |
8513 | { | |
8514 | gfc_error ("INTENT is not allowed inside of BLOCK at %C"); | |
8515 | return MATCH_ERROR; | |
8516 | } | |
8517 | ||
4ee9c684 | 8518 | intent = match_intent_spec (); |
8519 | if (intent == INTENT_UNKNOWN) | |
8520 | return MATCH_ERROR; | |
8521 | ||
8522 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 8523 | current_attr.intent = intent; |
4ee9c684 | 8524 | |
8525 | return attr_decl (); | |
8526 | } | |
8527 | ||
8528 | ||
8529 | match | |
8530 | gfc_match_intrinsic (void) | |
8531 | { | |
8532 | ||
8533 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 8534 | current_attr.intrinsic = 1; |
4ee9c684 | 8535 | |
8536 | return attr_decl (); | |
8537 | } | |
8538 | ||
8539 | ||
8540 | match | |
8541 | gfc_match_optional (void) | |
8542 | { | |
6a7084d7 | 8543 | /* This is not allowed within a BLOCK construct! */ |
8544 | if (gfc_current_state () == COMP_BLOCK) | |
8545 | { | |
8546 | gfc_error ("OPTIONAL is not allowed inside of BLOCK at %C"); | |
8547 | return MATCH_ERROR; | |
8548 | } | |
4ee9c684 | 8549 | |
8550 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 8551 | current_attr.optional = 1; |
4ee9c684 | 8552 | |
8553 | return attr_decl (); | |
8554 | } | |
8555 | ||
8556 | ||
8557 | match | |
8558 | gfc_match_pointer (void) | |
8559 | { | |
b549d2a5 | 8560 | gfc_gobble_whitespace (); |
e0be6f02 | 8561 | if (gfc_peek_ascii_char () == '(') |
b549d2a5 | 8562 | { |
829d7a08 | 8563 | if (!flag_cray_pointer) |
b549d2a5 | 8564 | { |
1a9745d2 | 8565 | gfc_error ("Cray pointer declaration at %C requires -fcray-pointer " |
8566 | "flag"); | |
b549d2a5 | 8567 | return MATCH_ERROR; |
8568 | } | |
8569 | return cray_pointer_decl (); | |
8570 | } | |
8571 | else | |
8572 | { | |
8573 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 8574 | current_attr.pointer = 1; |
8db94b3b | 8575 | |
b549d2a5 | 8576 | return attr_decl (); |
8577 | } | |
4ee9c684 | 8578 | } |
8579 | ||
8580 | ||
8581 | match | |
8582 | gfc_match_allocatable (void) | |
8583 | { | |
4ee9c684 | 8584 | gfc_clear_attr (¤t_attr); |
14efb9b7 | 8585 | current_attr.allocatable = 1; |
4ee9c684 | 8586 | |
8587 | return attr_decl (); | |
8588 | } | |
8589 | ||
8590 | ||
aff518b0 | 8591 | match |
8592 | gfc_match_codimension (void) | |
8593 | { | |
8594 | gfc_clear_attr (¤t_attr); | |
8595 | current_attr.codimension = 1; | |
8596 | ||
8597 | return attr_decl (); | |
8598 | } | |
8599 | ||
8600 | ||
b3c3927c | 8601 | match |
8602 | gfc_match_contiguous (void) | |
8603 | { | |
60e19868 | 8604 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS statement at %C")) |
b3c3927c | 8605 | return MATCH_ERROR; |
8606 | ||
8607 | gfc_clear_attr (¤t_attr); | |
8608 | current_attr.contiguous = 1; | |
8609 | ||
8610 | return attr_decl (); | |
8611 | } | |
8612 | ||
8613 | ||
4ee9c684 | 8614 | match |
8615 | gfc_match_dimension (void) | |
8616 | { | |
4ee9c684 | 8617 | gfc_clear_attr (¤t_attr); |
14efb9b7 | 8618 | current_attr.dimension = 1; |
4ee9c684 | 8619 | |
8620 | return attr_decl (); | |
8621 | } | |
8622 | ||
8623 | ||
8624 | match | |
8625 | gfc_match_target (void) | |
8626 | { | |
4ee9c684 | 8627 | gfc_clear_attr (¤t_attr); |
14efb9b7 | 8628 | current_attr.target = 1; |
4ee9c684 | 8629 | |
8630 | return attr_decl (); | |
8631 | } | |
8632 | ||
8633 | ||
8634 | /* Match the list of entities being specified in a PUBLIC or PRIVATE | |
8635 | statement. */ | |
8636 | ||
8637 | static match | |
8638 | access_attr_decl (gfc_statement st) | |
8639 | { | |
8640 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8641 | interface_type type; | |
8642 | gfc_user_op *uop; | |
c2958b6b | 8643 | gfc_symbol *sym, *dt_sym; |
dcb1b019 | 8644 | gfc_intrinsic_op op; |
4ee9c684 | 8645 | match m; |
8646 | ||
8647 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8648 | goto done; | |
8649 | ||
8650 | for (;;) | |
8651 | { | |
dcb1b019 | 8652 | m = gfc_match_generic_spec (&type, name, &op); |
4ee9c684 | 8653 | if (m == MATCH_NO) |
8654 | goto syntax; | |
8655 | if (m == MATCH_ERROR) | |
8656 | return MATCH_ERROR; | |
8657 | ||
8658 | switch (type) | |
8659 | { | |
8660 | case INTERFACE_NAMELESS: | |
94fa7146 | 8661 | case INTERFACE_ABSTRACT: |
4ee9c684 | 8662 | goto syntax; |
8663 | ||
8664 | case INTERFACE_GENERIC: | |
9f732c4e | 8665 | case INTERFACE_DTIO: |
2f78ea2e | 8666 | |
4ee9c684 | 8667 | if (gfc_get_symbol (name, NULL, &sym)) |
8668 | goto done; | |
8669 | ||
7966c683 | 8670 | if (type == INTERFACE_DTIO |
8671 | && gfc_current_ns->proc_name | |
8672 | && gfc_current_ns->proc_name->attr.flavor == FL_MODULE | |
8673 | && sym->attr.flavor == FL_UNKNOWN) | |
8674 | sym->attr.flavor = FL_PROCEDURE; | |
8675 | ||
76e207a9 | 8676 | if (!gfc_add_access (&sym->attr, |
8677 | (st == ST_PUBLIC) | |
8678 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
60e19868 | 8679 | sym->name, NULL)) |
4ee9c684 | 8680 | return MATCH_ERROR; |
8681 | ||
c2958b6b | 8682 | if (sym->attr.generic && (dt_sym = gfc_find_dt_in_generic (sym)) |
76e207a9 | 8683 | && !gfc_add_access (&dt_sym->attr, |
8684 | (st == ST_PUBLIC) | |
8685 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
60e19868 | 8686 | sym->name, NULL)) |
c2958b6b | 8687 | return MATCH_ERROR; |
8688 | ||
4ee9c684 | 8689 | break; |
8690 | ||
8691 | case INTERFACE_INTRINSIC_OP: | |
dcb1b019 | 8692 | if (gfc_current_ns->operator_access[op] == ACCESS_UNKNOWN) |
4ee9c684 | 8693 | { |
0c482c1d | 8694 | gfc_intrinsic_op other_op; |
8695 | ||
dcb1b019 | 8696 | gfc_current_ns->operator_access[op] = |
4ee9c684 | 8697 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; |
0c482c1d | 8698 | |
8699 | /* Handle the case if there is another op with the same | |
8700 | function, for INTRINSIC_EQ vs. INTRINSIC_EQ_OS and so on. */ | |
8701 | other_op = gfc_equivalent_op (op); | |
8702 | ||
8703 | if (other_op != INTRINSIC_NONE) | |
8704 | gfc_current_ns->operator_access[other_op] = | |
8705 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
8706 | ||
4ee9c684 | 8707 | } |
8708 | else | |
8709 | { | |
8710 | gfc_error ("Access specification of the %s operator at %C has " | |
dcb1b019 | 8711 | "already been specified", gfc_op2string (op)); |
4ee9c684 | 8712 | goto done; |
8713 | } | |
8714 | ||
8715 | break; | |
8716 | ||
8717 | case INTERFACE_USER_OP: | |
8718 | uop = gfc_get_uop (name); | |
8719 | ||
8720 | if (uop->access == ACCESS_UNKNOWN) | |
8721 | { | |
1a9745d2 | 8722 | uop->access = (st == ST_PUBLIC) |
8723 | ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
4ee9c684 | 8724 | } |
8725 | else | |
8726 | { | |
1a9745d2 | 8727 | gfc_error ("Access specification of the .%s. operator at %C " |
8728 | "has already been specified", sym->name); | |
4ee9c684 | 8729 | goto done; |
8730 | } | |
8731 | ||
8732 | break; | |
8733 | } | |
8734 | ||
8735 | if (gfc_match_char (',') == MATCH_NO) | |
8736 | break; | |
8737 | } | |
8738 | ||
8739 | if (gfc_match_eos () != MATCH_YES) | |
8740 | goto syntax; | |
8741 | return MATCH_YES; | |
8742 | ||
8743 | syntax: | |
8744 | gfc_syntax_error (st); | |
8745 | ||
8746 | done: | |
8747 | return MATCH_ERROR; | |
8748 | } | |
8749 | ||
8750 | ||
3ea52af3 | 8751 | match |
8752 | gfc_match_protected (void) | |
8753 | { | |
8754 | gfc_symbol *sym; | |
8755 | match m; | |
8756 | ||
54c0257b | 8757 | if (!gfc_current_ns->proc_name |
8758 | || gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
3ea52af3 | 8759 | { |
8760 | gfc_error ("PROTECTED at %C only allowed in specification " | |
8761 | "part of a module"); | |
8762 | return MATCH_ERROR; | |
8763 | ||
8764 | } | |
8765 | ||
60e19868 | 8766 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED statement at %C")) |
3ea52af3 | 8767 | return MATCH_ERROR; |
8768 | ||
8769 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8770 | { | |
8771 | return MATCH_ERROR; | |
8772 | } | |
8773 | ||
8774 | if (gfc_match_eos () == MATCH_YES) | |
8775 | goto syntax; | |
8776 | ||
8777 | for(;;) | |
8778 | { | |
8779 | m = gfc_match_symbol (&sym, 0); | |
8780 | switch (m) | |
8781 | { | |
8782 | case MATCH_YES: | |
60e19868 | 8783 | if (!gfc_add_protected (&sym->attr, sym->name, &gfc_current_locus)) |
3ea52af3 | 8784 | return MATCH_ERROR; |
8785 | goto next_item; | |
8786 | ||
8787 | case MATCH_NO: | |
8788 | break; | |
8789 | ||
8790 | case MATCH_ERROR: | |
8791 | return MATCH_ERROR; | |
8792 | } | |
8793 | ||
8794 | next_item: | |
8795 | if (gfc_match_eos () == MATCH_YES) | |
8796 | break; | |
8797 | if (gfc_match_char (',') != MATCH_YES) | |
8798 | goto syntax; | |
8799 | } | |
8800 | ||
8801 | return MATCH_YES; | |
8802 | ||
8803 | syntax: | |
8804 | gfc_error ("Syntax error in PROTECTED statement at %C"); | |
8805 | return MATCH_ERROR; | |
8806 | } | |
8807 | ||
8808 | ||
a0527218 | 8809 | /* The PRIVATE statement is a bit weird in that it can be an attribute |
69b1505f | 8810 | declaration, but also works as a standalone statement inside of a |
4ee9c684 | 8811 | type declaration or a module. */ |
8812 | ||
8813 | match | |
1a9745d2 | 8814 | gfc_match_private (gfc_statement *st) |
4ee9c684 | 8815 | { |
8816 | ||
8817 | if (gfc_match ("private") != MATCH_YES) | |
8818 | return MATCH_NO; | |
8819 | ||
e14bee04 | 8820 | if (gfc_current_state () != COMP_MODULE |
7fd88f6e | 8821 | && !(gfc_current_state () == COMP_DERIVED |
8822 | && gfc_state_stack->previous | |
8823 | && gfc_state_stack->previous->state == COMP_MODULE) | |
8824 | && !(gfc_current_state () == COMP_DERIVED_CONTAINS | |
8825 | && gfc_state_stack->previous && gfc_state_stack->previous->previous | |
8826 | && gfc_state_stack->previous->previous->state == COMP_MODULE)) | |
e14bee04 | 8827 | { |
8828 | gfc_error ("PRIVATE statement at %C is only allowed in the " | |
8829 | "specification part of a module"); | |
8830 | return MATCH_ERROR; | |
8831 | } | |
8832 | ||
4ee9c684 | 8833 | if (gfc_current_state () == COMP_DERIVED) |
8834 | { | |
8835 | if (gfc_match_eos () == MATCH_YES) | |
8836 | { | |
8837 | *st = ST_PRIVATE; | |
8838 | return MATCH_YES; | |
8839 | } | |
8840 | ||
8841 | gfc_syntax_error (ST_PRIVATE); | |
8842 | return MATCH_ERROR; | |
8843 | } | |
8844 | ||
8845 | if (gfc_match_eos () == MATCH_YES) | |
8846 | { | |
8847 | *st = ST_PRIVATE; | |
8848 | return MATCH_YES; | |
8849 | } | |
8850 | ||
8851 | *st = ST_ATTR_DECL; | |
8852 | return access_attr_decl (ST_PRIVATE); | |
8853 | } | |
8854 | ||
8855 | ||
8856 | match | |
1a9745d2 | 8857 | gfc_match_public (gfc_statement *st) |
4ee9c684 | 8858 | { |
8859 | ||
8860 | if (gfc_match ("public") != MATCH_YES) | |
8861 | return MATCH_NO; | |
8862 | ||
e14bee04 | 8863 | if (gfc_current_state () != COMP_MODULE) |
8864 | { | |
8865 | gfc_error ("PUBLIC statement at %C is only allowed in the " | |
8866 | "specification part of a module"); | |
8867 | return MATCH_ERROR; | |
8868 | } | |
8869 | ||
4ee9c684 | 8870 | if (gfc_match_eos () == MATCH_YES) |
8871 | { | |
8872 | *st = ST_PUBLIC; | |
8873 | return MATCH_YES; | |
8874 | } | |
8875 | ||
8876 | *st = ST_ATTR_DECL; | |
8877 | return access_attr_decl (ST_PUBLIC); | |
8878 | } | |
8879 | ||
8880 | ||
8881 | /* Workhorse for gfc_match_parameter. */ | |
8882 | ||
8883 | static match | |
8884 | do_parm (void) | |
8885 | { | |
8886 | gfc_symbol *sym; | |
8887 | gfc_expr *init; | |
8888 | match m; | |
60e19868 | 8889 | bool t; |
4ee9c684 | 8890 | |
8891 | m = gfc_match_symbol (&sym, 0); | |
8892 | if (m == MATCH_NO) | |
8893 | gfc_error ("Expected variable name at %C in PARAMETER statement"); | |
8894 | ||
8895 | if (m != MATCH_YES) | |
8896 | return m; | |
8897 | ||
8898 | if (gfc_match_char ('=') == MATCH_NO) | |
8899 | { | |
8900 | gfc_error ("Expected = sign in PARAMETER statement at %C"); | |
8901 | return MATCH_ERROR; | |
8902 | } | |
8903 | ||
8904 | m = gfc_match_init_expr (&init); | |
8905 | if (m == MATCH_NO) | |
8906 | gfc_error ("Expected expression at %C in PARAMETER statement"); | |
8907 | if (m != MATCH_YES) | |
8908 | return m; | |
8909 | ||
8910 | if (sym->ts.type == BT_UNKNOWN | |
60e19868 | 8911 | && !gfc_set_default_type (sym, 1, NULL)) |
4ee9c684 | 8912 | { |
8913 | m = MATCH_ERROR; | |
8914 | goto cleanup; | |
8915 | } | |
8916 | ||
60e19868 | 8917 | if (!gfc_check_assign_symbol (sym, NULL, init) |
8918 | || !gfc_add_flavor (&sym->attr, FL_PARAMETER, sym->name, NULL)) | |
4ee9c684 | 8919 | { |
8920 | m = MATCH_ERROR; | |
8921 | goto cleanup; | |
8922 | } | |
8923 | ||
13aebeb0 | 8924 | if (sym->value) |
8925 | { | |
8926 | gfc_error ("Initializing already initialized variable at %C"); | |
8927 | m = MATCH_ERROR; | |
8928 | goto cleanup; | |
8929 | } | |
8930 | ||
f16404e3 | 8931 | t = add_init_expr_to_sym (sym->name, &init, &gfc_current_locus); |
60e19868 | 8932 | return (t) ? MATCH_YES : MATCH_ERROR; |
4ee9c684 | 8933 | |
8934 | cleanup: | |
8935 | gfc_free_expr (init); | |
8936 | return m; | |
8937 | } | |
8938 | ||
8939 | ||
8940 | /* Match a parameter statement, with the weird syntax that these have. */ | |
8941 | ||
8942 | match | |
8943 | gfc_match_parameter (void) | |
8944 | { | |
2c628787 | 8945 | const char *term = " )%t"; |
4ee9c684 | 8946 | match m; |
8947 | ||
8948 | if (gfc_match_char ('(') == MATCH_NO) | |
2c628787 | 8949 | { |
8950 | /* With legacy PARAMETER statements, don't expect a terminating ')'. */ | |
8951 | if (!gfc_notify_std (GFC_STD_LEGACY, "PARAMETER without '()' at %C")) | |
8952 | return MATCH_NO; | |
8953 | term = " %t"; | |
8954 | } | |
4ee9c684 | 8955 | |
8956 | for (;;) | |
8957 | { | |
8958 | m = do_parm (); | |
8959 | if (m != MATCH_YES) | |
8960 | break; | |
8961 | ||
2c628787 | 8962 | if (gfc_match (term) == MATCH_YES) |
4ee9c684 | 8963 | break; |
8964 | ||
8965 | if (gfc_match_char (',') != MATCH_YES) | |
8966 | { | |
8967 | gfc_error ("Unexpected characters in PARAMETER statement at %C"); | |
8968 | m = MATCH_ERROR; | |
8969 | break; | |
8970 | } | |
8971 | } | |
8972 | ||
8973 | return m; | |
8974 | } | |
8975 | ||
8976 | ||
8e652fcf | 8977 | match |
8978 | gfc_match_automatic (void) | |
8979 | { | |
8980 | gfc_symbol *sym; | |
8981 | match m; | |
8982 | bool seen_symbol = false; | |
8983 | ||
8984 | if (!flag_dec_static) | |
8985 | { | |
841da9cf | 8986 | gfc_error ("%s at %C is a DEC extension, enable with " |
8987 | "%<-fdec-static%>", | |
8988 | "AUTOMATIC" | |
8989 | ); | |
8e652fcf | 8990 | return MATCH_ERROR; |
8991 | } | |
8992 | ||
8993 | gfc_match (" ::"); | |
8994 | ||
8995 | for (;;) | |
8996 | { | |
8997 | m = gfc_match_symbol (&sym, 0); | |
8998 | switch (m) | |
8999 | { | |
9000 | case MATCH_NO: | |
9001 | break; | |
9002 | ||
9003 | case MATCH_ERROR: | |
9004 | return MATCH_ERROR; | |
9005 | ||
9006 | case MATCH_YES: | |
9007 | if (!gfc_add_automatic (&sym->attr, sym->name, &gfc_current_locus)) | |
9008 | return MATCH_ERROR; | |
9009 | seen_symbol = true; | |
9010 | break; | |
9011 | } | |
9012 | ||
9013 | if (gfc_match_eos () == MATCH_YES) | |
9014 | break; | |
9015 | if (gfc_match_char (',') != MATCH_YES) | |
9016 | goto syntax; | |
9017 | } | |
9018 | ||
9019 | if (!seen_symbol) | |
9020 | { | |
9021 | gfc_error ("Expected entity-list in AUTOMATIC statement at %C"); | |
9022 | return MATCH_ERROR; | |
9023 | } | |
9024 | ||
9025 | return MATCH_YES; | |
9026 | ||
9027 | syntax: | |
9028 | gfc_error ("Syntax error in AUTOMATIC statement at %C"); | |
9029 | return MATCH_ERROR; | |
9030 | } | |
9031 | ||
9032 | ||
9033 | match | |
9034 | gfc_match_static (void) | |
9035 | { | |
9036 | gfc_symbol *sym; | |
9037 | match m; | |
9038 | bool seen_symbol = false; | |
9039 | ||
9040 | if (!flag_dec_static) | |
9041 | { | |
841da9cf | 9042 | gfc_error ("%s at %C is a DEC extension, enable with " |
9043 | "%<-fdec-static%>", | |
9044 | "STATIC"); | |
8e652fcf | 9045 | return MATCH_ERROR; |
9046 | } | |
9047 | ||
9048 | gfc_match (" ::"); | |
9049 | ||
9050 | for (;;) | |
9051 | { | |
9052 | m = gfc_match_symbol (&sym, 0); | |
9053 | switch (m) | |
9054 | { | |
9055 | case MATCH_NO: | |
9056 | break; | |
9057 | ||
9058 | case MATCH_ERROR: | |
9059 | return MATCH_ERROR; | |
9060 | ||
9061 | case MATCH_YES: | |
9062 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, | |
9063 | &gfc_current_locus)) | |
9064 | return MATCH_ERROR; | |
9065 | seen_symbol = true; | |
9066 | break; | |
9067 | } | |
9068 | ||
9069 | if (gfc_match_eos () == MATCH_YES) | |
9070 | break; | |
9071 | if (gfc_match_char (',') != MATCH_YES) | |
9072 | goto syntax; | |
9073 | } | |
9074 | ||
9075 | if (!seen_symbol) | |
9076 | { | |
9077 | gfc_error ("Expected entity-list in STATIC statement at %C"); | |
9078 | return MATCH_ERROR; | |
9079 | } | |
9080 | ||
9081 | return MATCH_YES; | |
9082 | ||
9083 | syntax: | |
9084 | gfc_error ("Syntax error in STATIC statement at %C"); | |
9085 | return MATCH_ERROR; | |
9086 | } | |
9087 | ||
9088 | ||
4ee9c684 | 9089 | /* Save statements have a special syntax. */ |
9090 | ||
9091 | match | |
9092 | gfc_match_save (void) | |
9093 | { | |
82f5ee13 | 9094 | char n[GFC_MAX_SYMBOL_LEN+1]; |
9095 | gfc_common_head *c; | |
4ee9c684 | 9096 | gfc_symbol *sym; |
9097 | match m; | |
9098 | ||
9099 | if (gfc_match_eos () == MATCH_YES) | |
9100 | { | |
9101 | if (gfc_current_ns->seen_save) | |
9102 | { | |
60e19868 | 9103 | if (!gfc_notify_std (GFC_STD_LEGACY, "Blanket SAVE statement at %C " |
9104 | "follows previous SAVE statement")) | |
76e82f95 | 9105 | return MATCH_ERROR; |
4ee9c684 | 9106 | } |
9107 | ||
9108 | gfc_current_ns->save_all = gfc_current_ns->seen_save = 1; | |
9109 | return MATCH_YES; | |
9110 | } | |
9111 | ||
9112 | if (gfc_current_ns->save_all) | |
9113 | { | |
60e19868 | 9114 | if (!gfc_notify_std (GFC_STD_LEGACY, "SAVE statement at %C follows " |
9115 | "blanket SAVE statement")) | |
76e82f95 | 9116 | return MATCH_ERROR; |
4ee9c684 | 9117 | } |
9118 | ||
9119 | gfc_match (" ::"); | |
9120 | ||
9121 | for (;;) | |
9122 | { | |
9123 | m = gfc_match_symbol (&sym, 0); | |
9124 | switch (m) | |
9125 | { | |
9126 | case MATCH_YES: | |
76e207a9 | 9127 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, |
60e19868 | 9128 | &gfc_current_locus)) |
4ee9c684 | 9129 | return MATCH_ERROR; |
9130 | goto next_item; | |
9131 | ||
9132 | case MATCH_NO: | |
9133 | break; | |
9134 | ||
9135 | case MATCH_ERROR: | |
9136 | return MATCH_ERROR; | |
9137 | } | |
9138 | ||
82f5ee13 | 9139 | m = gfc_match (" / %n /", &n); |
4ee9c684 | 9140 | if (m == MATCH_ERROR) |
9141 | return MATCH_ERROR; | |
9142 | if (m == MATCH_NO) | |
9143 | goto syntax; | |
9144 | ||
403ddc45 | 9145 | c = gfc_get_common (n, 0); |
82f5ee13 | 9146 | c->saved = 1; |
9147 | ||
4ee9c684 | 9148 | gfc_current_ns->seen_save = 1; |
9149 | ||
9150 | next_item: | |
9151 | if (gfc_match_eos () == MATCH_YES) | |
9152 | break; | |
9153 | if (gfc_match_char (',') != MATCH_YES) | |
9154 | goto syntax; | |
9155 | } | |
9156 | ||
9157 | return MATCH_YES; | |
9158 | ||
9159 | syntax: | |
9160 | gfc_error ("Syntax error in SAVE statement at %C"); | |
9161 | return MATCH_ERROR; | |
9162 | } | |
9163 | ||
9164 | ||
8f6339b6 | 9165 | match |
9166 | gfc_match_value (void) | |
9167 | { | |
9168 | gfc_symbol *sym; | |
9169 | match m; | |
9170 | ||
6a7084d7 | 9171 | /* This is not allowed within a BLOCK construct! */ |
9172 | if (gfc_current_state () == COMP_BLOCK) | |
9173 | { | |
9174 | gfc_error ("VALUE is not allowed inside of BLOCK at %C"); | |
9175 | return MATCH_ERROR; | |
9176 | } | |
9177 | ||
60e19868 | 9178 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE statement at %C")) |
8f6339b6 | 9179 | return MATCH_ERROR; |
9180 | ||
9181 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9182 | { | |
9183 | return MATCH_ERROR; | |
9184 | } | |
9185 | ||
9186 | if (gfc_match_eos () == MATCH_YES) | |
9187 | goto syntax; | |
9188 | ||
9189 | for(;;) | |
9190 | { | |
9191 | m = gfc_match_symbol (&sym, 0); | |
9192 | switch (m) | |
9193 | { | |
9194 | case MATCH_YES: | |
60e19868 | 9195 | if (!gfc_add_value (&sym->attr, sym->name, &gfc_current_locus)) |
8f6339b6 | 9196 | return MATCH_ERROR; |
9197 | goto next_item; | |
9198 | ||
9199 | case MATCH_NO: | |
9200 | break; | |
9201 | ||
9202 | case MATCH_ERROR: | |
9203 | return MATCH_ERROR; | |
9204 | } | |
9205 | ||
9206 | next_item: | |
9207 | if (gfc_match_eos () == MATCH_YES) | |
9208 | break; | |
9209 | if (gfc_match_char (',') != MATCH_YES) | |
9210 | goto syntax; | |
9211 | } | |
9212 | ||
9213 | return MATCH_YES; | |
9214 | ||
9215 | syntax: | |
9216 | gfc_error ("Syntax error in VALUE statement at %C"); | |
9217 | return MATCH_ERROR; | |
9218 | } | |
9219 | ||
f6d0e37a | 9220 | |
ef814c81 | 9221 | match |
9222 | gfc_match_volatile (void) | |
9223 | { | |
9224 | gfc_symbol *sym; | |
2c6ca8fc | 9225 | char *name; |
ef814c81 | 9226 | match m; |
9227 | ||
60e19868 | 9228 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE statement at %C")) |
ef814c81 | 9229 | return MATCH_ERROR; |
9230 | ||
9231 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9232 | { | |
9233 | return MATCH_ERROR; | |
9234 | } | |
9235 | ||
9236 | if (gfc_match_eos () == MATCH_YES) | |
9237 | goto syntax; | |
9238 | ||
9239 | for(;;) | |
9240 | { | |
8db94b3b | 9241 | /* VOLATILE is special because it can be added to host-associated |
293d72e0 | 9242 | symbols locally. Except for coarrays. */ |
2f241857 | 9243 | m = gfc_match_symbol (&sym, 1); |
ef814c81 | 9244 | switch (m) |
9245 | { | |
9246 | case MATCH_YES: | |
2c6ca8fc | 9247 | name = XCNEWVAR (char, strlen (sym->name) + 1); |
9248 | strcpy (name, sym->name); | |
9249 | if (!check_function_name (name)) | |
9250 | return MATCH_ERROR; | |
aff518b0 | 9251 | /* F2008, C560+C561. VOLATILE for host-/use-associated variable or |
9252 | for variable in a BLOCK which is defined outside of the BLOCK. */ | |
9253 | if (sym->ns != gfc_current_ns && sym->attr.codimension) | |
9254 | { | |
716da296 | 9255 | gfc_error ("Specifying VOLATILE for coarray variable %qs at " |
aff518b0 | 9256 | "%C, which is use-/host-associated", sym->name); |
9257 | return MATCH_ERROR; | |
9258 | } | |
60e19868 | 9259 | if (!gfc_add_volatile (&sym->attr, sym->name, &gfc_current_locus)) |
ef814c81 | 9260 | return MATCH_ERROR; |
9261 | goto next_item; | |
9262 | ||
9263 | case MATCH_NO: | |
9264 | break; | |
9265 | ||
9266 | case MATCH_ERROR: | |
9267 | return MATCH_ERROR; | |
9268 | } | |
9269 | ||
9270 | next_item: | |
9271 | if (gfc_match_eos () == MATCH_YES) | |
9272 | break; | |
9273 | if (gfc_match_char (',') != MATCH_YES) | |
9274 | goto syntax; | |
9275 | } | |
9276 | ||
9277 | return MATCH_YES; | |
9278 | ||
9279 | syntax: | |
9280 | gfc_error ("Syntax error in VOLATILE statement at %C"); | |
9281 | return MATCH_ERROR; | |
9282 | } | |
9283 | ||
9284 | ||
738928be | 9285 | match |
9286 | gfc_match_asynchronous (void) | |
9287 | { | |
9288 | gfc_symbol *sym; | |
2c6ca8fc | 9289 | char *name; |
738928be | 9290 | match m; |
9291 | ||
60e19868 | 9292 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS statement at %C")) |
738928be | 9293 | return MATCH_ERROR; |
9294 | ||
9295 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9296 | { | |
9297 | return MATCH_ERROR; | |
9298 | } | |
9299 | ||
9300 | if (gfc_match_eos () == MATCH_YES) | |
9301 | goto syntax; | |
9302 | ||
9303 | for(;;) | |
9304 | { | |
8db94b3b | 9305 | /* ASYNCHRONOUS is special because it can be added to host-associated |
738928be | 9306 | symbols locally. */ |
9307 | m = gfc_match_symbol (&sym, 1); | |
9308 | switch (m) | |
9309 | { | |
9310 | case MATCH_YES: | |
2c6ca8fc | 9311 | name = XCNEWVAR (char, strlen (sym->name) + 1); |
9312 | strcpy (name, sym->name); | |
9313 | if (!check_function_name (name)) | |
9314 | return MATCH_ERROR; | |
60e19868 | 9315 | if (!gfc_add_asynchronous (&sym->attr, sym->name, &gfc_current_locus)) |
738928be | 9316 | return MATCH_ERROR; |
9317 | goto next_item; | |
9318 | ||
9319 | case MATCH_NO: | |
9320 | break; | |
9321 | ||
9322 | case MATCH_ERROR: | |
9323 | return MATCH_ERROR; | |
9324 | } | |
9325 | ||
9326 | next_item: | |
9327 | if (gfc_match_eos () == MATCH_YES) | |
9328 | break; | |
9329 | if (gfc_match_char (',') != MATCH_YES) | |
9330 | goto syntax; | |
9331 | } | |
9332 | ||
9333 | return MATCH_YES; | |
9334 | ||
9335 | syntax: | |
9336 | gfc_error ("Syntax error in ASYNCHRONOUS statement at %C"); | |
9337 | return MATCH_ERROR; | |
9338 | } | |
9339 | ||
9340 | ||
4b8eb6ca | 9341 | /* Match a module procedure statement in a submodule. */ |
9342 | ||
9343 | match | |
9344 | gfc_match_submod_proc (void) | |
9345 | { | |
9346 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9347 | gfc_symbol *sym, *fsym; | |
9348 | match m; | |
9349 | gfc_formal_arglist *formal, *head, *tail; | |
9350 | ||
9351 | if (gfc_current_state () != COMP_CONTAINS | |
9352 | || !(gfc_state_stack->previous | |
76e207a9 | 9353 | && (gfc_state_stack->previous->state == COMP_SUBMODULE |
9354 | || gfc_state_stack->previous->state == COMP_MODULE))) | |
4b8eb6ca | 9355 | return MATCH_NO; |
9356 | ||
9357 | m = gfc_match (" module% procedure% %n", name); | |
9358 | if (m != MATCH_YES) | |
9359 | return m; | |
9360 | ||
9361 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE PROCEDURE declaration " | |
9362 | "at %C")) | |
9363 | return MATCH_ERROR; | |
9364 | ||
9365 | if (get_proc_name (name, &sym, false)) | |
9366 | return MATCH_ERROR; | |
9367 | ||
9368 | /* Make sure that the result field is appropriately filled, even though | |
9369 | the result symbol will be replaced later on. */ | |
dee7f6d1 | 9370 | if (sym->tlink && sym->tlink->attr.function) |
4b8eb6ca | 9371 | { |
dee7f6d1 | 9372 | if (sym->tlink->result |
9373 | && sym->tlink->result != sym->tlink) | |
9374 | sym->result= sym->tlink->result; | |
4b8eb6ca | 9375 | else |
9376 | sym->result = sym; | |
9377 | } | |
9378 | ||
9379 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if | |
9380 | the symbol existed before. */ | |
9381 | sym->declared_at = gfc_current_locus; | |
9382 | ||
9383 | if (!sym->attr.module_procedure) | |
9384 | return MATCH_ERROR; | |
9385 | ||
9386 | /* Signal match_end to expect "end procedure". */ | |
9387 | sym->abr_modproc_decl = 1; | |
9388 | ||
9389 | /* Change from IFSRC_IFBODY coming from the interface declaration. */ | |
9390 | sym->attr.if_source = IFSRC_DECL; | |
9391 | ||
9392 | gfc_new_block = sym; | |
9393 | ||
9394 | /* Make a new formal arglist with the symbols in the procedure | |
9395 | namespace. */ | |
9396 | head = tail = NULL; | |
9397 | for (formal = sym->formal; formal && formal->sym; formal = formal->next) | |
9398 | { | |
9399 | if (formal == sym->formal) | |
9400 | head = tail = gfc_get_formal_arglist (); | |
9401 | else | |
9402 | { | |
9403 | tail->next = gfc_get_formal_arglist (); | |
9404 | tail = tail->next; | |
9405 | } | |
9406 | ||
9407 | if (gfc_copy_dummy_sym (&fsym, formal->sym, 0)) | |
9408 | goto cleanup; | |
9409 | ||
9410 | tail->sym = fsym; | |
9411 | gfc_set_sym_referenced (fsym); | |
9412 | } | |
9413 | ||
9414 | /* The dummy symbols get cleaned up, when the formal_namespace of the | |
9415 | interface declaration is cleared. This allows us to add the | |
9416 | explicit interface as is done for other type of procedure. */ | |
9417 | if (!gfc_add_explicit_interface (sym, IFSRC_DECL, head, | |
9418 | &gfc_current_locus)) | |
9419 | return MATCH_ERROR; | |
9420 | ||
9421 | if (gfc_match_eos () != MATCH_YES) | |
9422 | { | |
9423 | gfc_syntax_error (ST_MODULE_PROC); | |
9424 | return MATCH_ERROR; | |
9425 | } | |
9426 | ||
9427 | return MATCH_YES; | |
9428 | ||
9429 | cleanup: | |
9430 | gfc_free_formal_arglist (head); | |
9431 | return MATCH_ERROR; | |
9432 | } | |
9433 | ||
9434 | ||
4ee9c684 | 9435 | /* Match a module procedure statement. Note that we have to modify |
9436 | symbols in the parent's namespace because the current one was there | |
89d91d02 | 9437 | to receive symbols that are in an interface's formal argument list. */ |
4ee9c684 | 9438 | |
9439 | match | |
9440 | gfc_match_modproc (void) | |
9441 | { | |
9442 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9443 | gfc_symbol *sym; | |
9444 | match m; | |
d920fb76 | 9445 | locus old_locus; |
63d42079 | 9446 | gfc_namespace *module_ns; |
94ce9f74 | 9447 | gfc_interface *old_interface_head, *interface; |
4ee9c684 | 9448 | |
9449 | if (gfc_state_stack->state != COMP_INTERFACE | |
9450 | || gfc_state_stack->previous == NULL | |
5cf92482 | 9451 | || current_interface.type == INTERFACE_NAMELESS |
9452 | || current_interface.type == INTERFACE_ABSTRACT) | |
4ee9c684 | 9453 | { |
1a9745d2 | 9454 | gfc_error ("MODULE PROCEDURE at %C must be in a generic module " |
9455 | "interface"); | |
4ee9c684 | 9456 | return MATCH_ERROR; |
9457 | } | |
9458 | ||
63d42079 | 9459 | module_ns = gfc_current_ns->parent; |
9460 | for (; module_ns; module_ns = module_ns->parent) | |
15ca3865 | 9461 | if (module_ns->proc_name->attr.flavor == FL_MODULE |
9462 | || module_ns->proc_name->attr.flavor == FL_PROGRAM | |
9463 | || (module_ns->proc_name->attr.flavor == FL_PROCEDURE | |
9464 | && !module_ns->proc_name->attr.contained)) | |
63d42079 | 9465 | break; |
9466 | ||
9467 | if (module_ns == NULL) | |
9468 | return MATCH_ERROR; | |
9469 | ||
94ce9f74 | 9470 | /* Store the current state of the interface. We will need it if we |
9471 | end up with a syntax error and need to recover. */ | |
9472 | old_interface_head = gfc_current_interface_head (); | |
9473 | ||
d920fb76 | 9474 | /* Check if the F2008 optional double colon appears. */ |
9475 | gfc_gobble_whitespace (); | |
9476 | old_locus = gfc_current_locus; | |
9477 | if (gfc_match ("::") == MATCH_YES) | |
9478 | { | |
60e19868 | 9479 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
9480 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
d920fb76 | 9481 | return MATCH_ERROR; |
9482 | } | |
9483 | else | |
9484 | gfc_current_locus = old_locus; | |
8db94b3b | 9485 | |
4ee9c684 | 9486 | for (;;) |
9487 | { | |
94ce9f74 | 9488 | bool last = false; |
d920fb76 | 9489 | old_locus = gfc_current_locus; |
94ce9f74 | 9490 | |
4ee9c684 | 9491 | m = gfc_match_name (name); |
9492 | if (m == MATCH_NO) | |
9493 | goto syntax; | |
9494 | if (m != MATCH_YES) | |
9495 | return MATCH_ERROR; | |
9496 | ||
94ce9f74 | 9497 | /* Check for syntax error before starting to add symbols to the |
9498 | current namespace. */ | |
9499 | if (gfc_match_eos () == MATCH_YES) | |
9500 | last = true; | |
d920fb76 | 9501 | |
94ce9f74 | 9502 | if (!last && gfc_match_char (',') != MATCH_YES) |
9503 | goto syntax; | |
9504 | ||
9505 | /* Now we're sure the syntax is valid, we process this item | |
9506 | further. */ | |
63d42079 | 9507 | if (gfc_get_symbol (name, module_ns, &sym)) |
4ee9c684 | 9508 | return MATCH_ERROR; |
9509 | ||
15ca3865 | 9510 | if (sym->attr.intrinsic) |
9511 | { | |
9512 | gfc_error ("Intrinsic procedure at %L cannot be a MODULE " | |
9513 | "PROCEDURE", &old_locus); | |
9514 | return MATCH_ERROR; | |
9515 | } | |
9516 | ||
4ee9c684 | 9517 | if (sym->attr.proc != PROC_MODULE |
60e19868 | 9518 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
4ee9c684 | 9519 | return MATCH_ERROR; |
9520 | ||
60e19868 | 9521 | if (!gfc_add_interface (sym)) |
4ee9c684 | 9522 | return MATCH_ERROR; |
9523 | ||
3186f695 | 9524 | sym->attr.mod_proc = 1; |
15ca3865 | 9525 | sym->declared_at = old_locus; |
3186f695 | 9526 | |
94ce9f74 | 9527 | if (last) |
4ee9c684 | 9528 | break; |
4ee9c684 | 9529 | } |
9530 | ||
9531 | return MATCH_YES; | |
9532 | ||
9533 | syntax: | |
94ce9f74 | 9534 | /* Restore the previous state of the interface. */ |
9535 | interface = gfc_current_interface_head (); | |
9536 | gfc_set_current_interface_head (old_interface_head); | |
9537 | ||
9538 | /* Free the new interfaces. */ | |
9539 | while (interface != old_interface_head) | |
9540 | { | |
9541 | gfc_interface *i = interface->next; | |
434f0922 | 9542 | free (interface); |
94ce9f74 | 9543 | interface = i; |
9544 | } | |
9545 | ||
9546 | /* And issue a syntax error. */ | |
4ee9c684 | 9547 | gfc_syntax_error (ST_MODULE_PROC); |
9548 | return MATCH_ERROR; | |
9549 | } | |
9550 | ||
9551 | ||
ea94d76d | 9552 | /* Check a derived type that is being extended. */ |
7a99bc9b | 9553 | |
ea94d76d | 9554 | static gfc_symbol* |
9555 | check_extended_derived_type (char *name) | |
9556 | { | |
9557 | gfc_symbol *extended; | |
9558 | ||
9559 | if (gfc_find_symbol (name, gfc_current_ns, 1, &extended)) | |
9560 | { | |
9561 | gfc_error ("Ambiguous symbol in TYPE definition at %C"); | |
9562 | return NULL; | |
9563 | } | |
9564 | ||
7a99bc9b | 9565 | extended = gfc_find_dt_in_generic (extended); |
9566 | ||
9567 | /* F08:C428. */ | |
ea94d76d | 9568 | if (!extended) |
9569 | { | |
716da296 | 9570 | gfc_error ("Symbol %qs at %C has not been previously defined", name); |
ea94d76d | 9571 | return NULL; |
9572 | } | |
9573 | ||
9574 | if (extended->attr.flavor != FL_DERIVED) | |
9575 | { | |
716da296 | 9576 | gfc_error ("%qs in EXTENDS expression at %C is not a " |
ea94d76d | 9577 | "derived type", name); |
9578 | return NULL; | |
9579 | } | |
9580 | ||
9581 | if (extended->attr.is_bind_c) | |
9582 | { | |
716da296 | 9583 | gfc_error ("%qs cannot be extended at %C because it " |
ea94d76d | 9584 | "is BIND(C)", extended->name); |
9585 | return NULL; | |
9586 | } | |
9587 | ||
9588 | if (extended->attr.sequence) | |
9589 | { | |
716da296 | 9590 | gfc_error ("%qs cannot be extended at %C because it " |
ea94d76d | 9591 | "is a SEQUENCE type", extended->name); |
9592 | return NULL; | |
9593 | } | |
9594 | ||
9595 | return extended; | |
9596 | } | |
9597 | ||
9598 | ||
c5d33754 | 9599 | /* Match the optional attribute specifiers for a type declaration. |
9600 | Return MATCH_ERROR if an error is encountered in one of the handled | |
9601 | attributes (public, private, bind(c)), MATCH_NO if what's found is | |
9602 | not a handled attribute, and MATCH_YES otherwise. TODO: More error | |
9603 | checking on attribute conflicts needs to be done. */ | |
4ee9c684 | 9604 | |
9605 | match | |
ea94d76d | 9606 | gfc_get_type_attr_spec (symbol_attribute *attr, char *name) |
4ee9c684 | 9607 | { |
c5d33754 | 9608 | /* See if the derived type is marked as private. */ |
4ee9c684 | 9609 | if (gfc_match (" , private") == MATCH_YES) |
9610 | { | |
e14bee04 | 9611 | if (gfc_current_state () != COMP_MODULE) |
4ee9c684 | 9612 | { |
e14bee04 | 9613 | gfc_error ("Derived type at %C can only be PRIVATE in the " |
9614 | "specification part of a module"); | |
4ee9c684 | 9615 | return MATCH_ERROR; |
9616 | } | |
9617 | ||
60e19868 | 9618 | if (!gfc_add_access (attr, ACCESS_PRIVATE, NULL, NULL)) |
4ee9c684 | 9619 | return MATCH_ERROR; |
4ee9c684 | 9620 | } |
c5d33754 | 9621 | else if (gfc_match (" , public") == MATCH_YES) |
4ee9c684 | 9622 | { |
e14bee04 | 9623 | if (gfc_current_state () != COMP_MODULE) |
4ee9c684 | 9624 | { |
e14bee04 | 9625 | gfc_error ("Derived type at %C can only be PUBLIC in the " |
9626 | "specification part of a module"); | |
4ee9c684 | 9627 | return MATCH_ERROR; |
9628 | } | |
9629 | ||
60e19868 | 9630 | if (!gfc_add_access (attr, ACCESS_PUBLIC, NULL, NULL)) |
4ee9c684 | 9631 | return MATCH_ERROR; |
4ee9c684 | 9632 | } |
ac5f2650 | 9633 | else if (gfc_match (" , bind ( c )") == MATCH_YES) |
c5d33754 | 9634 | { |
9635 | /* If the type is defined to be bind(c) it then needs to make | |
9636 | sure that all fields are interoperable. This will | |
9637 | need to be a semantic check on the finished derived type. | |
9638 | See 15.2.3 (lines 9-12) of F2003 draft. */ | |
60e19868 | 9639 | if (!gfc_add_is_bind_c (attr, NULL, &gfc_current_locus, 0)) |
c5d33754 | 9640 | return MATCH_ERROR; |
9641 | ||
9642 | /* TODO: attr conflicts need to be checked, probably in symbol.c. */ | |
9643 | } | |
ac5f2650 | 9644 | else if (gfc_match (" , abstract") == MATCH_YES) |
9645 | { | |
60e19868 | 9646 | if (!gfc_notify_std (GFC_STD_F2003, "ABSTRACT type at %C")) |
ac5f2650 | 9647 | return MATCH_ERROR; |
9648 | ||
60e19868 | 9649 | if (!gfc_add_abstract (attr, &gfc_current_locus)) |
ac5f2650 | 9650 | return MATCH_ERROR; |
9651 | } | |
60e19868 | 9652 | else if (name && gfc_match (" , extends ( %n )", name) == MATCH_YES) |
ea94d76d | 9653 | { |
60e19868 | 9654 | if (!gfc_add_extension (attr, &gfc_current_locus)) |
ea94d76d | 9655 | return MATCH_ERROR; |
9656 | } | |
c5d33754 | 9657 | else |
9658 | return MATCH_NO; | |
9659 | ||
9660 | /* If we get here, something matched. */ | |
9661 | return MATCH_YES; | |
9662 | } | |
9663 | ||
9664 | ||
d7cd448a | 9665 | /* Common function for type declaration blocks similar to derived types, such |
9666 | as STRUCTURES and MAPs. Unlike derived types, a structure type | |
9667 | does NOT have a generic symbol matching the name given by the user. | |
9668 | STRUCTUREs can share names with variables and PARAMETERs so we must allow | |
9669 | for the creation of an independent symbol. | |
7d7125df | 9670 | Other parameters are a message to prefix errors with, the name of the new |
d7cd448a | 9671 | type to be created, and the flavor to add to the resulting symbol. */ |
9672 | ||
9673 | static bool | |
9674 | get_struct_decl (const char *name, sym_flavor fl, locus *decl, | |
9675 | gfc_symbol **result) | |
9676 | { | |
9677 | gfc_symbol *sym; | |
9678 | locus where; | |
9679 | ||
9680 | gcc_assert (name[0] == (char) TOUPPER (name[0])); | |
9681 | ||
9682 | if (decl) | |
9683 | where = *decl; | |
9684 | else | |
9685 | where = gfc_current_locus; | |
9686 | ||
9687 | if (gfc_get_symbol (name, NULL, &sym)) | |
9688 | return false; | |
9689 | ||
9690 | if (!sym) | |
9691 | { | |
9692 | gfc_internal_error ("Failed to create structure type '%s' at %C", name); | |
9693 | return false; | |
9694 | } | |
9695 | ||
9696 | if (sym->components != NULL || sym->attr.zero_comp) | |
9697 | { | |
1b7008c4 | 9698 | gfc_error ("Type definition of %qs at %C was already defined at %L", |
d7cd448a | 9699 | sym->name, &sym->declared_at); |
9700 | return false; | |
9701 | } | |
9702 | ||
9703 | sym->declared_at = where; | |
9704 | ||
9705 | if (sym->attr.flavor != fl | |
9706 | && !gfc_add_flavor (&sym->attr, fl, sym->name, NULL)) | |
9707 | return false; | |
9708 | ||
9709 | if (!sym->hash_value) | |
9710 | /* Set the hash for the compound name for this type. */ | |
9711 | sym->hash_value = gfc_hash_value (sym); | |
9712 | ||
9713 | /* Normally the type is expected to have been completely parsed by the time | |
9714 | a field declaration with this type is seen. For unions, maps, and nested | |
9715 | structure declarations, we need to indicate that it is okay that we | |
9716 | haven't seen any components yet. This will be updated after the structure | |
9717 | is fully parsed. */ | |
9718 | sym->attr.zero_comp = 0; | |
9719 | ||
9720 | /* Structures always act like derived-types with the SEQUENCE attribute */ | |
9721 | gfc_add_sequence (&sym->attr, sym->name, NULL); | |
9722 | ||
9723 | if (result) *result = sym; | |
9724 | ||
9725 | return true; | |
9726 | } | |
9727 | ||
9728 | ||
9729 | /* Match the opening of a MAP block. Like a struct within a union in C; | |
9730 | behaves identical to STRUCTURE blocks. */ | |
9731 | ||
9732 | match | |
9733 | gfc_match_map (void) | |
9734 | { | |
ac1739da | 9735 | /* Counter used to give unique internal names to map structures. */ |
9736 | static unsigned int gfc_map_id = 0; | |
9737 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9738 | gfc_symbol *sym; | |
9739 | locus old_loc; | |
d7cd448a | 9740 | |
ac1739da | 9741 | old_loc = gfc_current_locus; |
d7cd448a | 9742 | |
ac1739da | 9743 | if (gfc_match_eos () != MATCH_YES) |
9744 | { | |
9745 | gfc_error ("Junk after MAP statement at %C"); | |
9746 | gfc_current_locus = old_loc; | |
9747 | return MATCH_ERROR; | |
9748 | } | |
d7cd448a | 9749 | |
ac1739da | 9750 | /* Map blocks are anonymous so we make up unique names for the symbol table |
9751 | which are invalid Fortran identifiers. */ | |
9752 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "MM$%u", gfc_map_id++); | |
d7cd448a | 9753 | |
ac1739da | 9754 | if (!get_struct_decl (name, FL_STRUCT, &old_loc, &sym)) |
9755 | return MATCH_ERROR; | |
d7cd448a | 9756 | |
ac1739da | 9757 | gfc_new_block = sym; |
d7cd448a | 9758 | |
ac1739da | 9759 | return MATCH_YES; |
d7cd448a | 9760 | } |
9761 | ||
9762 | ||
9763 | /* Match the opening of a UNION block. */ | |
9764 | ||
9765 | match | |
9766 | gfc_match_union (void) | |
9767 | { | |
ac1739da | 9768 | /* Counter used to give unique internal names to union types. */ |
9769 | static unsigned int gfc_union_id = 0; | |
9770 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9771 | gfc_symbol *sym; | |
9772 | locus old_loc; | |
d7cd448a | 9773 | |
ac1739da | 9774 | old_loc = gfc_current_locus; |
d7cd448a | 9775 | |
ac1739da | 9776 | if (gfc_match_eos () != MATCH_YES) |
9777 | { | |
9778 | gfc_error ("Junk after UNION statement at %C"); | |
9779 | gfc_current_locus = old_loc; | |
9780 | return MATCH_ERROR; | |
9781 | } | |
d7cd448a | 9782 | |
ac1739da | 9783 | /* Unions are anonymous so we make up unique names for the symbol table |
9784 | which are invalid Fortran identifiers. */ | |
9785 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "UU$%u", gfc_union_id++); | |
d7cd448a | 9786 | |
ac1739da | 9787 | if (!get_struct_decl (name, FL_UNION, &old_loc, &sym)) |
9788 | return MATCH_ERROR; | |
d7cd448a | 9789 | |
ac1739da | 9790 | gfc_new_block = sym; |
d7cd448a | 9791 | |
ac1739da | 9792 | return MATCH_YES; |
d7cd448a | 9793 | } |
9794 | ||
9795 | ||
9796 | /* Match the beginning of a STRUCTURE declaration. This is similar to | |
9797 | matching the beginning of a derived type declaration with a few | |
9798 | twists. The resulting type symbol has no access control or other | |
9799 | interesting attributes. */ | |
9800 | ||
9801 | match | |
9802 | gfc_match_structure_decl (void) | |
9803 | { | |
ac1739da | 9804 | /* Counter used to give unique internal names to anonymous structures. */ |
9805 | static unsigned int gfc_structure_id = 0; | |
9806 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9807 | gfc_symbol *sym; | |
9808 | match m; | |
9809 | locus where; | |
d7cd448a | 9810 | |
ac1739da | 9811 | if (!flag_dec_structure) |
9812 | { | |
841da9cf | 9813 | gfc_error ("%s at %C is a DEC extension, enable with " |
9814 | "%<-fdec-structure%>", | |
9815 | "STRUCTURE"); | |
ac1739da | 9816 | return MATCH_ERROR; |
9817 | } | |
d7cd448a | 9818 | |
ac1739da | 9819 | name[0] = '\0'; |
d7cd448a | 9820 | |
ac1739da | 9821 | m = gfc_match (" /%n/", name); |
9822 | if (m != MATCH_YES) | |
9823 | { | |
9824 | /* Non-nested structure declarations require a structure name. */ | |
9825 | if (!gfc_comp_struct (gfc_current_state ())) | |
9826 | { | |
9827 | gfc_error ("Structure name expected in non-nested structure " | |
9828 | "declaration at %C"); | |
9829 | return MATCH_ERROR; | |
9830 | } | |
9831 | /* This is an anonymous structure; make up a unique name for it | |
9832 | (upper-case letters never make it to symbol names from the source). | |
9833 | The important thing is initializing the type variable | |
9834 | and setting gfc_new_symbol, which is immediately used by | |
9835 | parse_structure () and variable_decl () to add components of | |
9836 | this type. */ | |
9837 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "SS$%u", gfc_structure_id++); | |
9838 | } | |
d7cd448a | 9839 | |
ac1739da | 9840 | where = gfc_current_locus; |
9841 | /* No field list allowed after non-nested structure declaration. */ | |
9842 | if (!gfc_comp_struct (gfc_current_state ()) | |
9843 | && gfc_match_eos () != MATCH_YES) | |
9844 | { | |
9845 | gfc_error ("Junk after non-nested STRUCTURE statement at %C"); | |
9846 | return MATCH_ERROR; | |
9847 | } | |
d7cd448a | 9848 | |
ac1739da | 9849 | /* Make sure the name is not the name of an intrinsic type. */ |
9850 | if (gfc_is_intrinsic_typename (name)) | |
9851 | { | |
1b7008c4 | 9852 | gfc_error ("Structure name %qs at %C cannot be the same as an" |
ac1739da | 9853 | " intrinsic type", name); |
9854 | return MATCH_ERROR; | |
9855 | } | |
d7cd448a | 9856 | |
ac1739da | 9857 | /* Store the actual type symbol for the structure with an upper-case first |
9858 | letter (an invalid Fortran identifier). */ | |
d7cd448a | 9859 | |
dc326dc0 | 9860 | if (!get_struct_decl (gfc_dt_upper_string (name), FL_STRUCT, &where, &sym)) |
ac1739da | 9861 | return MATCH_ERROR; |
d7cd448a | 9862 | |
ac1739da | 9863 | gfc_new_block = sym; |
9864 | return MATCH_YES; | |
d7cd448a | 9865 | } |
9866 | ||
006943e8 | 9867 | |
9868 | /* This function does some work to determine which matcher should be used to | |
80ed743c | 9869 | * match a statement beginning with "TYPE". This is used to disambiguate TYPE |
006943e8 | 9870 | * as an alias for PRINT from derived type declarations, TYPE IS statements, |
80ed743c | 9871 | * and [parameterized] derived type declarations. */ |
006943e8 | 9872 | |
9873 | match | |
9874 | gfc_match_type (gfc_statement *st) | |
9875 | { | |
9876 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9877 | match m; | |
9878 | locus old_loc; | |
9879 | ||
9880 | /* Requires -fdec. */ | |
9881 | if (!flag_dec) | |
9882 | return MATCH_NO; | |
9883 | ||
9884 | m = gfc_match ("type"); | |
9885 | if (m != MATCH_YES) | |
9886 | return m; | |
9887 | /* If we already have an error in the buffer, it is probably from failing to | |
9888 | * match a derived type data declaration. Let it happen. */ | |
9889 | else if (gfc_error_flag_test ()) | |
9890 | return MATCH_NO; | |
9891 | ||
9892 | old_loc = gfc_current_locus; | |
9893 | *st = ST_NONE; | |
9894 | ||
9895 | /* If we see an attribute list before anything else it's definitely a derived | |
9896 | * type declaration. */ | |
9897 | if (gfc_match (" ,") == MATCH_YES || gfc_match (" ::") == MATCH_YES) | |
80ed743c | 9898 | goto derived; |
006943e8 | 9899 | |
9900 | /* By now "TYPE" has already been matched. If we do not see a name, this may | |
9901 | * be something like "TYPE *" or "TYPE <fmt>". */ | |
9902 | m = gfc_match_name (name); | |
9903 | if (m != MATCH_YES) | |
9904 | { | |
9905 | /* Let print match if it can, otherwise throw an error from | |
9906 | * gfc_match_derived_decl. */ | |
9907 | gfc_current_locus = old_loc; | |
9908 | if (gfc_match_print () == MATCH_YES) | |
9909 | { | |
9910 | *st = ST_WRITE; | |
9911 | return MATCH_YES; | |
9912 | } | |
80ed743c | 9913 | goto derived; |
006943e8 | 9914 | } |
9915 | ||
80ed743c | 9916 | /* Check for EOS. */ |
9917 | if (gfc_match_eos () == MATCH_YES) | |
006943e8 | 9918 | { |
9919 | /* By now we have "TYPE <name> <EOS>". Check first if the name is an | |
9920 | * intrinsic typename - if so let gfc_match_derived_decl dump an error. | |
9921 | * Otherwise if gfc_match_derived_decl fails it's probably an existing | |
9922 | * symbol which can be printed. */ | |
9923 | gfc_current_locus = old_loc; | |
9924 | m = gfc_match_derived_decl (); | |
9925 | if (gfc_is_intrinsic_typename (name) || m == MATCH_YES) | |
9926 | { | |
9927 | *st = ST_DERIVED_DECL; | |
9928 | return m; | |
9929 | } | |
006943e8 | 9930 | } |
80ed743c | 9931 | else |
9932 | { | |
9933 | /* Here we have "TYPE <name>". Check for <TYPE IS (> or a PDT declaration | |
9934 | like <type name(parameter)>. */ | |
9935 | gfc_gobble_whitespace (); | |
9936 | bool paren = gfc_peek_ascii_char () == '('; | |
9937 | if (paren) | |
9938 | { | |
9939 | if (strcmp ("is", name) == 0) | |
9940 | goto typeis; | |
9941 | else | |
9942 | goto derived; | |
9943 | } | |
9944 | } | |
9945 | ||
9946 | /* Treat TYPE... like PRINT... */ | |
9947 | gfc_current_locus = old_loc; | |
9948 | *st = ST_WRITE; | |
9949 | return gfc_match_print (); | |
006943e8 | 9950 | |
80ed743c | 9951 | derived: |
9952 | gfc_current_locus = old_loc; | |
9953 | *st = ST_DERIVED_DECL; | |
9954 | return gfc_match_derived_decl (); | |
9955 | ||
9956 | typeis: | |
9957 | gfc_current_locus = old_loc; | |
9958 | *st = ST_TYPE_IS; | |
9959 | return gfc_match_type_is (); | |
006943e8 | 9960 | } |
9961 | ||
9962 | ||
c5d33754 | 9963 | /* Match the beginning of a derived type declaration. If a type name |
9964 | was the result of a function, then it is possible to have a symbol | |
9965 | already to be known as a derived type yet have no components. */ | |
9966 | ||
9967 | match | |
9968 | gfc_match_derived_decl (void) | |
9969 | { | |
9970 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
ea94d76d | 9971 | char parent[GFC_MAX_SYMBOL_LEN + 1]; |
c5d33754 | 9972 | symbol_attribute attr; |
c2958b6b | 9973 | gfc_symbol *sym, *gensym; |
ea94d76d | 9974 | gfc_symbol *extended; |
c5d33754 | 9975 | match m; |
9976 | match is_type_attr_spec = MATCH_NO; | |
33e86520 | 9977 | bool seen_attr = false; |
c2958b6b | 9978 | gfc_interface *intr = NULL, *head; |
9d958d5b | 9979 | bool parameterized_type = false; |
9980 | bool seen_colons = false; | |
c5d33754 | 9981 | |
d7cd448a | 9982 | if (gfc_comp_struct (gfc_current_state ())) |
c5d33754 | 9983 | return MATCH_NO; |
9984 | ||
ea94d76d | 9985 | name[0] = '\0'; |
9986 | parent[0] = '\0'; | |
c5d33754 | 9987 | gfc_clear_attr (&attr); |
ea94d76d | 9988 | extended = NULL; |
c5d33754 | 9989 | |
9990 | do | |
9991 | { | |
ea94d76d | 9992 | is_type_attr_spec = gfc_get_type_attr_spec (&attr, parent); |
c5d33754 | 9993 | if (is_type_attr_spec == MATCH_ERROR) |
9994 | return MATCH_ERROR; | |
33e86520 | 9995 | if (is_type_attr_spec == MATCH_YES) |
9996 | seen_attr = true; | |
c5d33754 | 9997 | } while (is_type_attr_spec == MATCH_YES); |
4ee9c684 | 9998 | |
e485ad6b | 9999 | /* Deal with derived type extensions. The extension attribute has |
10000 | been added to 'attr' but now the parent type must be found and | |
10001 | checked. */ | |
ea94d76d | 10002 | if (parent[0]) |
10003 | extended = check_extended_derived_type (parent); | |
10004 | ||
10005 | if (parent[0] && !extended) | |
10006 | return MATCH_ERROR; | |
10007 | ||
9d958d5b | 10008 | m = gfc_match (" ::"); |
10009 | if (m == MATCH_YES) | |
10010 | { | |
10011 | seen_colons = true; | |
10012 | } | |
10013 | else if (seen_attr) | |
4ee9c684 | 10014 | { |
10015 | gfc_error ("Expected :: in TYPE definition at %C"); | |
10016 | return MATCH_ERROR; | |
10017 | } | |
10018 | ||
9d958d5b | 10019 | m = gfc_match (" %n ", name); |
4ee9c684 | 10020 | if (m != MATCH_YES) |
10021 | return m; | |
10022 | ||
9d958d5b | 10023 | /* Make sure that we don't identify TYPE IS (...) as a parameterized |
10024 | derived type named 'is'. | |
10025 | TODO Expand the check, when 'name' = "is" by matching " (tname) " | |
10026 | and checking if this is a(n intrinsic) typename. his picks up | |
10027 | misplaced TYPE IS statements such as in select_type_1.f03. */ | |
10028 | if (gfc_peek_ascii_char () == '(') | |
10029 | { | |
10030 | if (gfc_current_state () == COMP_SELECT_TYPE | |
10031 | || (!seen_colons && !strcmp (name, "is"))) | |
10032 | return MATCH_NO; | |
10033 | parameterized_type = true; | |
10034 | } | |
10035 | ||
10036 | m = gfc_match_eos (); | |
10037 | if (m != MATCH_YES && !parameterized_type) | |
10038 | return m; | |
10039 | ||
a3055431 | 10040 | /* Make sure the name is not the name of an intrinsic type. */ |
10041 | if (gfc_is_intrinsic_typename (name)) | |
4ee9c684 | 10042 | { |
716da296 | 10043 | gfc_error ("Type name %qs at %C cannot be the same as an intrinsic " |
1a9745d2 | 10044 | "type", name); |
4ee9c684 | 10045 | return MATCH_ERROR; |
10046 | } | |
10047 | ||
c2958b6b | 10048 | if (gfc_get_symbol (name, NULL, &gensym)) |
4ee9c684 | 10049 | return MATCH_ERROR; |
10050 | ||
c2958b6b | 10051 | if (!gensym->attr.generic && gensym->ts.type != BT_UNKNOWN) |
4ee9c684 | 10052 | { |
7dea3ef8 | 10053 | if (gensym->ts.u.derived) |
10054 | gfc_error ("Derived type name %qs at %C already has a basic type " | |
10055 | "of %s", gensym->name, gfc_typename (&gensym->ts)); | |
10056 | else | |
10057 | gfc_error ("Derived type name %qs at %C already has a basic type", | |
10058 | gensym->name); | |
c2958b6b | 10059 | return MATCH_ERROR; |
10060 | } | |
10061 | ||
10062 | if (!gensym->attr.generic | |
60e19868 | 10063 | && !gfc_add_generic (&gensym->attr, gensym->name, NULL)) |
c2958b6b | 10064 | return MATCH_ERROR; |
10065 | ||
10066 | if (!gensym->attr.function | |
60e19868 | 10067 | && !gfc_add_function (&gensym->attr, gensym->name, NULL)) |
c2958b6b | 10068 | return MATCH_ERROR; |
10069 | ||
10070 | sym = gfc_find_dt_in_generic (gensym); | |
10071 | ||
10072 | if (sym && (sym->components != NULL || sym->attr.zero_comp)) | |
10073 | { | |
716da296 | 10074 | gfc_error ("Derived type definition of %qs at %C has already been " |
c2958b6b | 10075 | "defined", sym->name); |
4ee9c684 | 10076 | return MATCH_ERROR; |
10077 | } | |
10078 | ||
c2958b6b | 10079 | if (!sym) |
10080 | { | |
10081 | /* Use upper case to save the actual derived-type symbol. */ | |
d7cd448a | 10082 | gfc_get_symbol (gfc_dt_upper_string (gensym->name), NULL, &sym); |
dc326dc0 | 10083 | sym->name = gfc_get_string ("%s", gensym->name); |
c2958b6b | 10084 | head = gensym->generic; |
10085 | intr = gfc_get_interface (); | |
10086 | intr->sym = sym; | |
10087 | intr->where = gfc_current_locus; | |
10088 | intr->sym->declared_at = gfc_current_locus; | |
10089 | intr->next = head; | |
10090 | gensym->generic = intr; | |
10091 | gensym->attr.if_source = IFSRC_DECL; | |
10092 | } | |
10093 | ||
4ee9c684 | 10094 | /* The symbol may already have the derived attribute without the |
10095 | components. The ways this can happen is via a function | |
10096 | definition, an INTRINSIC statement or a subtype in another | |
10097 | derived type that is a pointer. The first part of the AND clause | |
69b1505f | 10098 | is true if the symbol is not the return value of a function. */ |
4ee9c684 | 10099 | if (sym->attr.flavor != FL_DERIVED |
60e19868 | 10100 | && !gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL)) |
4ee9c684 | 10101 | return MATCH_ERROR; |
10102 | ||
4ee9c684 | 10103 | if (attr.access != ACCESS_UNKNOWN |
60e19868 | 10104 | && !gfc_add_access (&sym->attr, attr.access, sym->name, NULL)) |
4ee9c684 | 10105 | return MATCH_ERROR; |
c2958b6b | 10106 | else if (sym->attr.access == ACCESS_UNKNOWN |
10107 | && gensym->attr.access != ACCESS_UNKNOWN | |
76e207a9 | 10108 | && !gfc_add_access (&sym->attr, gensym->attr.access, |
60e19868 | 10109 | sym->name, NULL)) |
c2958b6b | 10110 | return MATCH_ERROR; |
10111 | ||
10112 | if (sym->attr.access != ACCESS_UNKNOWN | |
10113 | && gensym->attr.access == ACCESS_UNKNOWN) | |
10114 | gensym->attr.access = sym->attr.access; | |
4ee9c684 | 10115 | |
c5d33754 | 10116 | /* See if the derived type was labeled as bind(c). */ |
10117 | if (attr.is_bind_c != 0) | |
10118 | sym->attr.is_bind_c = attr.is_bind_c; | |
10119 | ||
223f0f57 | 10120 | /* Construct the f2k_derived namespace if it is not yet there. */ |
10121 | if (!sym->f2k_derived) | |
10122 | sym->f2k_derived = gfc_get_namespace (NULL, 0); | |
8db94b3b | 10123 | |
9d958d5b | 10124 | if (parameterized_type) |
10125 | { | |
f0efd2e8 | 10126 | /* Ignore error or mismatches by going to the end of the statement |
10127 | in order to avoid the component declarations causing problems. */ | |
10128 | m = gfc_match_formal_arglist (sym, 0, 0, true); | |
10129 | if (m != MATCH_YES) | |
10130 | gfc_error_recovery (); | |
9d958d5b | 10131 | m = gfc_match_eos (); |
10132 | if (m != MATCH_YES) | |
8df28d5e | 10133 | { |
10134 | gfc_error_recovery (); | |
10135 | gfc_error_now ("Garbage after PARAMETERIZED TYPE declaration at %C"); | |
10136 | } | |
9d958d5b | 10137 | sym->attr.pdt_template = 1; |
10138 | } | |
10139 | ||
ea94d76d | 10140 | if (extended && !sym->components) |
10141 | { | |
10142 | gfc_component *p; | |
9d958d5b | 10143 | gfc_formal_arglist *f, *g, *h; |
ea94d76d | 10144 | |
10145 | /* Add the extended derived type as the first component. */ | |
10146 | gfc_add_component (sym, parent, &p); | |
ea94d76d | 10147 | extended->refs++; |
10148 | gfc_set_sym_referenced (extended); | |
10149 | ||
10150 | p->ts.type = BT_DERIVED; | |
eeebe20b | 10151 | p->ts.u.derived = extended; |
ea94d76d | 10152 | p->initializer = gfc_default_initializer (&p->ts); |
8db94b3b | 10153 | |
bdfbc762 | 10154 | /* Set extension level. */ |
10155 | if (extended->attr.extension == 255) | |
10156 | { | |
10157 | /* Since the extension field is 8 bit wide, we can only have | |
10158 | up to 255 extension levels. */ | |
716da296 | 10159 | gfc_error ("Maximum extension level reached with type %qs at %L", |
bdfbc762 | 10160 | extended->name, &extended->declared_at); |
10161 | return MATCH_ERROR; | |
10162 | } | |
10163 | sym->attr.extension = extended->attr.extension + 1; | |
ea94d76d | 10164 | |
10165 | /* Provide the links between the extended type and its extension. */ | |
10166 | if (!extended->f2k_derived) | |
10167 | extended->f2k_derived = gfc_get_namespace (NULL, 0); | |
9d958d5b | 10168 | |
10169 | /* Copy the extended type-param-name-list from the extended type, | |
10170 | append those of the extension and add the whole lot to the | |
10171 | extension. */ | |
10172 | if (extended->attr.pdt_template) | |
10173 | { | |
10174 | g = h = NULL; | |
10175 | sym->attr.pdt_template = 1; | |
10176 | for (f = extended->formal; f; f = f->next) | |
10177 | { | |
10178 | if (f == extended->formal) | |
10179 | { | |
10180 | g = gfc_get_formal_arglist (); | |
10181 | h = g; | |
10182 | } | |
10183 | else | |
10184 | { | |
10185 | g->next = gfc_get_formal_arglist (); | |
10186 | g = g->next; | |
10187 | } | |
10188 | g->sym = f->sym; | |
10189 | } | |
10190 | g->next = sym->formal; | |
10191 | sym->formal = h; | |
10192 | } | |
ea94d76d | 10193 | } |
10194 | ||
bdfbc762 | 10195 | if (!sym->hash_value) |
10196 | /* Set the hash for the compound name for this type. */ | |
a656e7c2 | 10197 | sym->hash_value = gfc_hash_value (sym); |
1de1b1a9 | 10198 | |
ac5f2650 | 10199 | /* Take over the ABSTRACT attribute. */ |
10200 | sym->attr.abstract = attr.abstract; | |
10201 | ||
4ee9c684 | 10202 | gfc_new_block = sym; |
10203 | ||
10204 | return MATCH_YES; | |
10205 | } | |
b549d2a5 | 10206 | |
10207 | ||
8db94b3b | 10208 | /* Cray Pointees can be declared as: |
452695a8 | 10209 | pointer (ipt, a (n,m,...,*)) */ |
b549d2a5 | 10210 | |
8458f4ca | 10211 | match |
b549d2a5 | 10212 | gfc_mod_pointee_as (gfc_array_spec *as) |
10213 | { | |
10214 | as->cray_pointee = true; /* This will be useful to know later. */ | |
10215 | if (as->type == AS_ASSUMED_SIZE) | |
452695a8 | 10216 | as->cp_was_assumed = true; |
b549d2a5 | 10217 | else if (as->type == AS_ASSUMED_SHAPE) |
10218 | { | |
10219 | gfc_error ("Cray Pointee at %C cannot be assumed shape array"); | |
10220 | return MATCH_ERROR; | |
10221 | } | |
10222 | return MATCH_YES; | |
10223 | } | |
3b6a4b41 | 10224 | |
10225 | ||
8db94b3b | 10226 | /* Match the enum definition statement, here we are trying to match |
10227 | the first line of enum definition statement. | |
3b6a4b41 | 10228 | Returns MATCH_YES if match is found. */ |
10229 | ||
10230 | match | |
10231 | gfc_match_enum (void) | |
10232 | { | |
10233 | match m; | |
8db94b3b | 10234 | |
3b6a4b41 | 10235 | m = gfc_match_eos (); |
10236 | if (m != MATCH_YES) | |
10237 | return m; | |
10238 | ||
60e19868 | 10239 | if (!gfc_notify_std (GFC_STD_F2003, "ENUM and ENUMERATOR at %C")) |
3b6a4b41 | 10240 | return MATCH_ERROR; |
10241 | ||
10242 | return MATCH_YES; | |
10243 | } | |
10244 | ||
10245 | ||
fe1328da | 10246 | /* Returns an initializer whose value is one higher than the value of the |
10247 | LAST_INITIALIZER argument. If the argument is NULL, the | |
10248 | initializers value will be set to zero. The initializer's kind | |
10249 | will be set to gfc_c_int_kind. | |
10250 | ||
10251 | If -fshort-enums is given, the appropriate kind will be selected | |
10252 | later after all enumerators have been parsed. A warning is issued | |
10253 | here if an initializer exceeds gfc_c_int_kind. */ | |
10254 | ||
10255 | static gfc_expr * | |
10256 | enum_initializer (gfc_expr *last_initializer, locus where) | |
10257 | { | |
10258 | gfc_expr *result; | |
126387b5 | 10259 | result = gfc_get_constant_expr (BT_INTEGER, gfc_c_int_kind, &where); |
fe1328da | 10260 | |
10261 | mpz_init (result->value.integer); | |
10262 | ||
10263 | if (last_initializer != NULL) | |
10264 | { | |
10265 | mpz_add_ui (result->value.integer, last_initializer->value.integer, 1); | |
10266 | result->where = last_initializer->where; | |
10267 | ||
10268 | if (gfc_check_integer_range (result->value.integer, | |
10269 | gfc_c_int_kind) != ARITH_OK) | |
10270 | { | |
10271 | gfc_error ("Enumerator exceeds the C integer type at %C"); | |
10272 | return NULL; | |
10273 | } | |
10274 | } | |
10275 | else | |
10276 | { | |
10277 | /* Control comes here, if it's the very first enumerator and no | |
10278 | initializer has been given. It will be initialized to zero. */ | |
10279 | mpz_set_si (result->value.integer, 0); | |
10280 | } | |
10281 | ||
10282 | return result; | |
10283 | } | |
10284 | ||
10285 | ||
60fbbf9e | 10286 | /* Match a variable name with an optional initializer. When this |
10287 | subroutine is called, a variable is expected to be parsed next. | |
10288 | Depending on what is happening at the moment, updates either the | |
10289 | symbol table or the current interface. */ | |
10290 | ||
10291 | static match | |
10292 | enumerator_decl (void) | |
10293 | { | |
10294 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10295 | gfc_expr *initializer; | |
10296 | gfc_array_spec *as = NULL; | |
10297 | gfc_symbol *sym; | |
10298 | locus var_locus; | |
10299 | match m; | |
60e19868 | 10300 | bool t; |
60fbbf9e | 10301 | locus old_locus; |
10302 | ||
10303 | initializer = NULL; | |
10304 | old_locus = gfc_current_locus; | |
10305 | ||
10306 | /* When we get here, we've just matched a list of attributes and | |
10307 | maybe a type and a double colon. The next thing we expect to see | |
10308 | is the name of the symbol. */ | |
10309 | m = gfc_match_name (name); | |
10310 | if (m != MATCH_YES) | |
10311 | goto cleanup; | |
10312 | ||
10313 | var_locus = gfc_current_locus; | |
10314 | ||
10315 | /* OK, we've successfully matched the declaration. Now put the | |
10316 | symbol in the current namespace. If we fail to create the symbol, | |
10317 | bail out. */ | |
60e19868 | 10318 | if (!build_sym (name, NULL, false, &as, &var_locus)) |
60fbbf9e | 10319 | { |
10320 | m = MATCH_ERROR; | |
10321 | goto cleanup; | |
10322 | } | |
10323 | ||
10324 | /* The double colon must be present in order to have initializers. | |
10325 | Otherwise the statement is ambiguous with an assignment statement. */ | |
10326 | if (colon_seen) | |
10327 | { | |
10328 | if (gfc_match_char ('=') == MATCH_YES) | |
10329 | { | |
10330 | m = gfc_match_init_expr (&initializer); | |
10331 | if (m == MATCH_NO) | |
10332 | { | |
10333 | gfc_error ("Expected an initialization expression at %C"); | |
10334 | m = MATCH_ERROR; | |
10335 | } | |
10336 | ||
10337 | if (m != MATCH_YES) | |
10338 | goto cleanup; | |
10339 | } | |
10340 | } | |
10341 | ||
10342 | /* If we do not have an initializer, the initialization value of the | |
10343 | previous enumerator (stored in last_initializer) is incremented | |
10344 | by 1 and is used to initialize the current enumerator. */ | |
10345 | if (initializer == NULL) | |
fe1328da | 10346 | initializer = enum_initializer (last_initializer, old_locus); |
e14bee04 | 10347 | |
60fbbf9e | 10348 | if (initializer == NULL || initializer->ts.type != BT_INTEGER) |
10349 | { | |
a8beb4f8 | 10350 | gfc_error ("ENUMERATOR %L not initialized with integer expression", |
10351 | &var_locus); | |
e14bee04 | 10352 | m = MATCH_ERROR; |
60fbbf9e | 10353 | goto cleanup; |
10354 | } | |
10355 | ||
10356 | /* Store this current initializer, for the next enumerator variable | |
10357 | to be parsed. add_init_expr_to_sym() zeros initializer, so we | |
10358 | use last_initializer below. */ | |
10359 | last_initializer = initializer; | |
10360 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
10361 | ||
10362 | /* Maintain enumerator history. */ | |
10363 | gfc_find_symbol (name, NULL, 0, &sym); | |
10364 | create_enum_history (sym, last_initializer); | |
10365 | ||
60e19868 | 10366 | return (t) ? MATCH_YES : MATCH_ERROR; |
60fbbf9e | 10367 | |
10368 | cleanup: | |
10369 | /* Free stuff up and return. */ | |
10370 | gfc_free_expr (initializer); | |
10371 | ||
10372 | return m; | |
10373 | } | |
10374 | ||
10375 | ||
f6d0e37a | 10376 | /* Match the enumerator definition statement. */ |
3b6a4b41 | 10377 | |
10378 | match | |
10379 | gfc_match_enumerator_def (void) | |
10380 | { | |
10381 | match m; | |
60e19868 | 10382 | bool t; |
e14bee04 | 10383 | |
3b6a4b41 | 10384 | gfc_clear_ts (¤t_ts); |
e14bee04 | 10385 | |
3b6a4b41 | 10386 | m = gfc_match (" enumerator"); |
10387 | if (m != MATCH_YES) | |
10388 | return m; | |
60fbbf9e | 10389 | |
10390 | m = gfc_match (" :: "); | |
10391 | if (m == MATCH_ERROR) | |
10392 | return m; | |
10393 | ||
10394 | colon_seen = (m == MATCH_YES); | |
e14bee04 | 10395 | |
3b6a4b41 | 10396 | if (gfc_current_state () != COMP_ENUM) |
10397 | { | |
10398 | gfc_error ("ENUM definition statement expected before %C"); | |
10399 | gfc_free_enum_history (); | |
10400 | return MATCH_ERROR; | |
10401 | } | |
10402 | ||
10403 | (¤t_ts)->type = BT_INTEGER; | |
10404 | (¤t_ts)->kind = gfc_c_int_kind; | |
e14bee04 | 10405 | |
60fbbf9e | 10406 | gfc_clear_attr (¤t_attr); |
10407 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, NULL); | |
60e19868 | 10408 | if (!t) |
3b6a4b41 | 10409 | { |
60fbbf9e | 10410 | m = MATCH_ERROR; |
3b6a4b41 | 10411 | goto cleanup; |
10412 | } | |
10413 | ||
3b6a4b41 | 10414 | for (;;) |
10415 | { | |
60fbbf9e | 10416 | m = enumerator_decl (); |
3b6a4b41 | 10417 | if (m == MATCH_ERROR) |
a8beb4f8 | 10418 | { |
10419 | gfc_free_enum_history (); | |
10420 | goto cleanup; | |
10421 | } | |
3b6a4b41 | 10422 | if (m == MATCH_NO) |
10423 | break; | |
10424 | ||
10425 | if (gfc_match_eos () == MATCH_YES) | |
10426 | goto cleanup; | |
10427 | if (gfc_match_char (',') != MATCH_YES) | |
10428 | break; | |
10429 | } | |
10430 | ||
10431 | if (gfc_current_state () == COMP_ENUM) | |
10432 | { | |
10433 | gfc_free_enum_history (); | |
10434 | gfc_error ("Syntax error in ENUMERATOR definition at %C"); | |
10435 | m = MATCH_ERROR; | |
10436 | } | |
10437 | ||
10438 | cleanup: | |
10439 | gfc_free_array_spec (current_as); | |
10440 | current_as = NULL; | |
10441 | return m; | |
10442 | ||
10443 | } | |
10444 | ||
e449e4dd | 10445 | |
7fd88f6e | 10446 | /* Match binding attributes. */ |
10447 | ||
10448 | static match | |
64e93293 | 10449 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc) |
7fd88f6e | 10450 | { |
10451 | bool found_passing = false; | |
64e93293 | 10452 | bool seen_ptr = false; |
fe9b08a2 | 10453 | match m = MATCH_YES; |
7fd88f6e | 10454 | |
df084314 | 10455 | /* Initialize to defaults. Do so even before the MATCH_NO check so that in |
7fd88f6e | 10456 | this case the defaults are in there. */ |
10457 | ba->access = ACCESS_UNKNOWN; | |
10458 | ba->pass_arg = NULL; | |
10459 | ba->pass_arg_num = 0; | |
10460 | ba->nopass = 0; | |
10461 | ba->non_overridable = 0; | |
61c3b81d | 10462 | ba->deferred = 0; |
fe9b08a2 | 10463 | ba->ppc = ppc; |
7fd88f6e | 10464 | |
10465 | /* If we find a comma, we believe there are binding attributes. */ | |
fe9b08a2 | 10466 | m = gfc_match_char (','); |
10467 | if (m == MATCH_NO) | |
10468 | goto done; | |
7fd88f6e | 10469 | |
10470 | do | |
10471 | { | |
e2f06a48 | 10472 | /* Access specifier. */ |
10473 | ||
10474 | m = gfc_match (" public"); | |
7fd88f6e | 10475 | if (m == MATCH_ERROR) |
10476 | goto error; | |
10477 | if (m == MATCH_YES) | |
10478 | { | |
e2f06a48 | 10479 | if (ba->access != ACCESS_UNKNOWN) |
7fd88f6e | 10480 | { |
e2f06a48 | 10481 | gfc_error ("Duplicate access-specifier at %C"); |
7fd88f6e | 10482 | goto error; |
10483 | } | |
10484 | ||
e2f06a48 | 10485 | ba->access = ACCESS_PUBLIC; |
7fd88f6e | 10486 | continue; |
10487 | } | |
10488 | ||
e2f06a48 | 10489 | m = gfc_match (" private"); |
7fd88f6e | 10490 | if (m == MATCH_ERROR) |
10491 | goto error; | |
10492 | if (m == MATCH_YES) | |
10493 | { | |
e2f06a48 | 10494 | if (ba->access != ACCESS_UNKNOWN) |
7fd88f6e | 10495 | { |
e2f06a48 | 10496 | gfc_error ("Duplicate access-specifier at %C"); |
7fd88f6e | 10497 | goto error; |
10498 | } | |
10499 | ||
e2f06a48 | 10500 | ba->access = ACCESS_PRIVATE; |
7fd88f6e | 10501 | continue; |
10502 | } | |
10503 | ||
e2f06a48 | 10504 | /* If inside GENERIC, the following is not allowed. */ |
10505 | if (!generic) | |
7fd88f6e | 10506 | { |
7fd88f6e | 10507 | |
e2f06a48 | 10508 | /* NOPASS flag. */ |
10509 | m = gfc_match (" nopass"); | |
10510 | if (m == MATCH_ERROR) | |
10511 | goto error; | |
10512 | if (m == MATCH_YES) | |
7fd88f6e | 10513 | { |
e2f06a48 | 10514 | if (found_passing) |
10515 | { | |
10516 | gfc_error ("Binding attributes already specify passing," | |
10517 | " illegal NOPASS at %C"); | |
10518 | goto error; | |
10519 | } | |
10520 | ||
10521 | found_passing = true; | |
10522 | ba->nopass = 1; | |
10523 | continue; | |
7fd88f6e | 10524 | } |
10525 | ||
e2f06a48 | 10526 | /* PASS possibly including argument. */ |
10527 | m = gfc_match (" pass"); | |
10528 | if (m == MATCH_ERROR) | |
10529 | goto error; | |
10530 | if (m == MATCH_YES) | |
7fd88f6e | 10531 | { |
e2f06a48 | 10532 | char arg[GFC_MAX_SYMBOL_LEN + 1]; |
10533 | ||
10534 | if (found_passing) | |
10535 | { | |
10536 | gfc_error ("Binding attributes already specify passing," | |
10537 | " illegal PASS at %C"); | |
10538 | goto error; | |
10539 | } | |
10540 | ||
10541 | m = gfc_match (" ( %n )", arg); | |
10542 | if (m == MATCH_ERROR) | |
10543 | goto error; | |
10544 | if (m == MATCH_YES) | |
dc326dc0 | 10545 | ba->pass_arg = gfc_get_string ("%s", arg); |
e2f06a48 | 10546 | gcc_assert ((m == MATCH_YES) == (ba->pass_arg != NULL)); |
10547 | ||
10548 | found_passing = true; | |
10549 | ba->nopass = 0; | |
10550 | continue; | |
7fd88f6e | 10551 | } |
10552 | ||
64e93293 | 10553 | if (ppc) |
10554 | { | |
10555 | /* POINTER flag. */ | |
10556 | m = gfc_match (" pointer"); | |
10557 | if (m == MATCH_ERROR) | |
10558 | goto error; | |
10559 | if (m == MATCH_YES) | |
10560 | { | |
10561 | if (seen_ptr) | |
10562 | { | |
10563 | gfc_error ("Duplicate POINTER attribute at %C"); | |
10564 | goto error; | |
10565 | } | |
10566 | ||
10567 | seen_ptr = true; | |
64e93293 | 10568 | continue; |
10569 | } | |
10570 | } | |
10571 | else | |
10572 | { | |
10573 | /* NON_OVERRIDABLE flag. */ | |
10574 | m = gfc_match (" non_overridable"); | |
10575 | if (m == MATCH_ERROR) | |
10576 | goto error; | |
10577 | if (m == MATCH_YES) | |
10578 | { | |
10579 | if (ba->non_overridable) | |
10580 | { | |
10581 | gfc_error ("Duplicate NON_OVERRIDABLE at %C"); | |
10582 | goto error; | |
10583 | } | |
10584 | ||
10585 | ba->non_overridable = 1; | |
10586 | continue; | |
10587 | } | |
10588 | ||
10589 | /* DEFERRED flag. */ | |
10590 | m = gfc_match (" deferred"); | |
10591 | if (m == MATCH_ERROR) | |
10592 | goto error; | |
10593 | if (m == MATCH_YES) | |
10594 | { | |
10595 | if (ba->deferred) | |
10596 | { | |
10597 | gfc_error ("Duplicate DEFERRED at %C"); | |
10598 | goto error; | |
10599 | } | |
10600 | ||
10601 | ba->deferred = 1; | |
10602 | continue; | |
10603 | } | |
10604 | } | |
10605 | ||
7fd88f6e | 10606 | } |
10607 | ||
10608 | /* Nothing matching found. */ | |
e2f06a48 | 10609 | if (generic) |
10610 | gfc_error ("Expected access-specifier at %C"); | |
10611 | else | |
10612 | gfc_error ("Expected binding attribute at %C"); | |
7fd88f6e | 10613 | goto error; |
10614 | } | |
10615 | while (gfc_match_char (',') == MATCH_YES); | |
10616 | ||
61c3b81d | 10617 | /* NON_OVERRIDABLE and DEFERRED exclude themselves. */ |
10618 | if (ba->non_overridable && ba->deferred) | |
10619 | { | |
10620 | gfc_error ("NON_OVERRIDABLE and DEFERRED can't both appear at %C"); | |
10621 | goto error; | |
10622 | } | |
10623 | ||
fe9b08a2 | 10624 | m = MATCH_YES; |
10625 | ||
10626 | done: | |
e2f06a48 | 10627 | if (ba->access == ACCESS_UNKNOWN) |
c41ff969 | 10628 | ba->access = ppc ? gfc_current_block()->component_access |
10629 | : gfc_typebound_default_access; | |
e2f06a48 | 10630 | |
64e93293 | 10631 | if (ppc && !seen_ptr) |
10632 | { | |
10633 | gfc_error ("POINTER attribute is required for procedure pointer component" | |
10634 | " at %C"); | |
10635 | goto error; | |
10636 | } | |
10637 | ||
fe9b08a2 | 10638 | return m; |
7fd88f6e | 10639 | |
10640 | error: | |
7fd88f6e | 10641 | return MATCH_ERROR; |
10642 | } | |
10643 | ||
10644 | ||
10645 | /* Match a PROCEDURE specific binding inside a derived type. */ | |
10646 | ||
10647 | static match | |
10648 | match_procedure_in_type (void) | |
10649 | { | |
10650 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10651 | char target_buf[GFC_MAX_SYMBOL_LEN + 1]; | |
7a3aaef8 | 10652 | char* target = NULL, *ifc = NULL; |
4a12b9ba | 10653 | gfc_typebound_proc tb; |
7fd88f6e | 10654 | bool seen_colons; |
10655 | bool seen_attrs; | |
10656 | match m; | |
10657 | gfc_symtree* stree; | |
10658 | gfc_namespace* ns; | |
10659 | gfc_symbol* block; | |
7a3aaef8 | 10660 | int num; |
7fd88f6e | 10661 | |
10662 | /* Check current state. */ | |
10663 | gcc_assert (gfc_state_stack->state == COMP_DERIVED_CONTAINS); | |
10664 | block = gfc_state_stack->previous->sym; | |
10665 | gcc_assert (block); | |
10666 | ||
61c3b81d | 10667 | /* Try to match PROCEDURE(interface). */ |
7fd88f6e | 10668 | if (gfc_match (" (") == MATCH_YES) |
10669 | { | |
61c3b81d | 10670 | m = gfc_match_name (target_buf); |
10671 | if (m == MATCH_ERROR) | |
10672 | return m; | |
10673 | if (m != MATCH_YES) | |
10674 | { | |
0d2b3c9c | 10675 | gfc_error ("Interface-name expected after %<(%> at %C"); |
61c3b81d | 10676 | return MATCH_ERROR; |
10677 | } | |
10678 | ||
10679 | if (gfc_match (" )") != MATCH_YES) | |
10680 | { | |
0d2b3c9c | 10681 | gfc_error ("%<)%> expected at %C"); |
61c3b81d | 10682 | return MATCH_ERROR; |
10683 | } | |
10684 | ||
7a3aaef8 | 10685 | ifc = target_buf; |
7fd88f6e | 10686 | } |
10687 | ||
10688 | /* Construct the data structure. */ | |
b3d1387f | 10689 | memset (&tb, 0, sizeof (tb)); |
4a12b9ba | 10690 | tb.where = gfc_current_locus; |
7fd88f6e | 10691 | |
10692 | /* Match binding attributes. */ | |
4a12b9ba | 10693 | m = match_binding_attributes (&tb, false, false); |
7fd88f6e | 10694 | if (m == MATCH_ERROR) |
10695 | return m; | |
10696 | seen_attrs = (m == MATCH_YES); | |
10697 | ||
7a3aaef8 | 10698 | /* Check that attribute DEFERRED is given if an interface is specified. */ |
4a12b9ba | 10699 | if (tb.deferred && !ifc) |
61c3b81d | 10700 | { |
10701 | gfc_error ("Interface must be specified for DEFERRED binding at %C"); | |
10702 | return MATCH_ERROR; | |
10703 | } | |
4a12b9ba | 10704 | if (ifc && !tb.deferred) |
61c3b81d | 10705 | { |
10706 | gfc_error ("PROCEDURE(interface) at %C should be declared DEFERRED"); | |
10707 | return MATCH_ERROR; | |
10708 | } | |
10709 | ||
7fd88f6e | 10710 | /* Match the colons. */ |
10711 | m = gfc_match (" ::"); | |
10712 | if (m == MATCH_ERROR) | |
10713 | return m; | |
10714 | seen_colons = (m == MATCH_YES); | |
10715 | if (seen_attrs && !seen_colons) | |
10716 | { | |
0d2b3c9c | 10717 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
7fd88f6e | 10718 | return MATCH_ERROR; |
10719 | } | |
10720 | ||
8db94b3b | 10721 | /* Match the binding names. */ |
7a3aaef8 | 10722 | for(num=1;;num++) |
7fd88f6e | 10723 | { |
7a3aaef8 | 10724 | m = gfc_match_name (name); |
10725 | if (m == MATCH_ERROR) | |
10726 | return m; | |
10727 | if (m == MATCH_NO) | |
61c3b81d | 10728 | { |
7a3aaef8 | 10729 | gfc_error ("Expected binding name at %C"); |
61c3b81d | 10730 | return MATCH_ERROR; |
10731 | } | |
10732 | ||
60e19868 | 10733 | if (num>1 && !gfc_notify_std (GFC_STD_F2008, "PROCEDURE list at %C")) |
7a3aaef8 | 10734 | return MATCH_ERROR; |
7fd88f6e | 10735 | |
7a3aaef8 | 10736 | /* Try to match the '=> target', if it's there. */ |
10737 | target = ifc; | |
10738 | m = gfc_match (" =>"); | |
7fd88f6e | 10739 | if (m == MATCH_ERROR) |
10740 | return m; | |
7a3aaef8 | 10741 | if (m == MATCH_YES) |
7fd88f6e | 10742 | { |
4a12b9ba | 10743 | if (tb.deferred) |
7a3aaef8 | 10744 | { |
0d2b3c9c | 10745 | gfc_error ("%<=> target%> is invalid for DEFERRED binding at %C"); |
7a3aaef8 | 10746 | return MATCH_ERROR; |
10747 | } | |
10748 | ||
10749 | if (!seen_colons) | |
10750 | { | |
0d2b3c9c | 10751 | gfc_error ("%<::%> needed in PROCEDURE binding with explicit target" |
7a3aaef8 | 10752 | " at %C"); |
10753 | return MATCH_ERROR; | |
10754 | } | |
10755 | ||
10756 | m = gfc_match_name (target_buf); | |
10757 | if (m == MATCH_ERROR) | |
10758 | return m; | |
10759 | if (m == MATCH_NO) | |
10760 | { | |
0d2b3c9c | 10761 | gfc_error ("Expected binding target after %<=>%> at %C"); |
7a3aaef8 | 10762 | return MATCH_ERROR; |
10763 | } | |
10764 | target = target_buf; | |
7fd88f6e | 10765 | } |
7fd88f6e | 10766 | |
7a3aaef8 | 10767 | /* If no target was found, it has the same name as the binding. */ |
10768 | if (!target) | |
10769 | target = name; | |
7fd88f6e | 10770 | |
7a3aaef8 | 10771 | /* Get the namespace to insert the symbols into. */ |
10772 | ns = block->f2k_derived; | |
10773 | gcc_assert (ns); | |
7fd88f6e | 10774 | |
7a3aaef8 | 10775 | /* If the binding is DEFERRED, check that the containing type is ABSTRACT. */ |
4a12b9ba | 10776 | if (tb.deferred && !block->attr.abstract) |
7a3aaef8 | 10777 | { |
716da296 | 10778 | gfc_error ("Type %qs containing DEFERRED binding at %C " |
7a3aaef8 | 10779 | "is not ABSTRACT", block->name); |
10780 | return MATCH_ERROR; | |
10781 | } | |
7fd88f6e | 10782 | |
7a3aaef8 | 10783 | /* See if we already have a binding with this name in the symtree which |
9834e1b6 | 10784 | would be an error. If a GENERIC already targeted this binding, it may |
7a3aaef8 | 10785 | be already there but then typebound is still NULL. */ |
10786 | stree = gfc_find_symtree (ns->tb_sym_root, name); | |
e204cb62 | 10787 | if (stree && stree->n.tb) |
7a3aaef8 | 10788 | { |
716da296 | 10789 | gfc_error ("There is already a procedure with binding name %qs for " |
10790 | "the derived type %qs at %C", name, block->name); | |
7a3aaef8 | 10791 | return MATCH_ERROR; |
10792 | } | |
61c3b81d | 10793 | |
7a3aaef8 | 10794 | /* Insert it and set attributes. */ |
7fd88f6e | 10795 | |
e204cb62 | 10796 | if (!stree) |
10797 | { | |
10798 | stree = gfc_new_symtree (&ns->tb_sym_root, name); | |
10799 | gcc_assert (stree); | |
10800 | } | |
4a12b9ba | 10801 | stree->n.tb = gfc_get_typebound_proc (&tb); |
3323e9b1 | 10802 | |
4a12b9ba | 10803 | if (gfc_get_sym_tree (target, gfc_current_ns, &stree->n.tb->u.specific, |
10804 | false)) | |
7a3aaef8 | 10805 | return MATCH_ERROR; |
4a12b9ba | 10806 | gfc_set_sym_referenced (stree->n.tb->u.specific->n.sym); |
1f302f2e | 10807 | gfc_add_flavor(&stree->n.tb->u.specific->n.sym->attr, FL_PROCEDURE, |
10808 | target, &stree->n.tb->u.specific->n.sym->declared_at); | |
8db94b3b | 10809 | |
7a3aaef8 | 10810 | if (gfc_match_eos () == MATCH_YES) |
10811 | return MATCH_YES; | |
10812 | if (gfc_match_char (',') != MATCH_YES) | |
10813 | goto syntax; | |
3323e9b1 | 10814 | } |
7fd88f6e | 10815 | |
7a3aaef8 | 10816 | syntax: |
10817 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
10818 | return MATCH_ERROR; | |
7fd88f6e | 10819 | } |
10820 | ||
10821 | ||
e2f06a48 | 10822 | /* Match a GENERIC procedure binding inside a derived type. */ |
10823 | ||
10824 | match | |
10825 | gfc_match_generic (void) | |
10826 | { | |
10827 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
a36eb9ee | 10828 | char bind_name[GFC_MAX_SYMBOL_LEN + 16]; /* Allow space for OPERATOR(...). */ |
e2f06a48 | 10829 | gfc_symbol* block; |
10830 | gfc_typebound_proc tbattr; /* Used for match_binding_attributes. */ | |
10831 | gfc_typebound_proc* tb; | |
e2f06a48 | 10832 | gfc_namespace* ns; |
a36eb9ee | 10833 | interface_type op_type; |
10834 | gfc_intrinsic_op op; | |
e2f06a48 | 10835 | match m; |
10836 | ||
10837 | /* Check current state. */ | |
10838 | if (gfc_current_state () == COMP_DERIVED) | |
10839 | { | |
10840 | gfc_error ("GENERIC at %C must be inside a derived-type CONTAINS"); | |
10841 | return MATCH_ERROR; | |
10842 | } | |
10843 | if (gfc_current_state () != COMP_DERIVED_CONTAINS) | |
10844 | return MATCH_NO; | |
10845 | block = gfc_state_stack->previous->sym; | |
10846 | ns = block->f2k_derived; | |
10847 | gcc_assert (block && ns); | |
10848 | ||
b3d1387f | 10849 | memset (&tbattr, 0, sizeof (tbattr)); |
10850 | tbattr.where = gfc_current_locus; | |
10851 | ||
e2f06a48 | 10852 | /* See if we get an access-specifier. */ |
64e93293 | 10853 | m = match_binding_attributes (&tbattr, true, false); |
e2f06a48 | 10854 | if (m == MATCH_ERROR) |
10855 | goto error; | |
10856 | ||
10857 | /* Now the colons, those are required. */ | |
10858 | if (gfc_match (" ::") != MATCH_YES) | |
10859 | { | |
0d2b3c9c | 10860 | gfc_error ("Expected %<::%> at %C"); |
e2f06a48 | 10861 | goto error; |
10862 | } | |
10863 | ||
a36eb9ee | 10864 | /* Match the binding name; depending on type (operator / generic) format |
10865 | it for future error messages into bind_name. */ | |
8db94b3b | 10866 | |
a36eb9ee | 10867 | m = gfc_match_generic_spec (&op_type, name, &op); |
e2f06a48 | 10868 | if (m == MATCH_ERROR) |
10869 | return MATCH_ERROR; | |
10870 | if (m == MATCH_NO) | |
10871 | { | |
a36eb9ee | 10872 | gfc_error ("Expected generic name or operator descriptor at %C"); |
e2f06a48 | 10873 | goto error; |
10874 | } | |
10875 | ||
a36eb9ee | 10876 | switch (op_type) |
e2f06a48 | 10877 | { |
a36eb9ee | 10878 | case INTERFACE_GENERIC: |
9f732c4e | 10879 | case INTERFACE_DTIO: |
a36eb9ee | 10880 | snprintf (bind_name, sizeof (bind_name), "%s", name); |
10881 | break; | |
8db94b3b | 10882 | |
a36eb9ee | 10883 | case INTERFACE_USER_OP: |
10884 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(.%s.)", name); | |
10885 | break; | |
8db94b3b | 10886 | |
a36eb9ee | 10887 | case INTERFACE_INTRINSIC_OP: |
10888 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(%s)", | |
10889 | gfc_op2string (op)); | |
10890 | break; | |
10891 | ||
7e8f55c1 | 10892 | case INTERFACE_NAMELESS: |
10893 | gfc_error ("Malformed GENERIC statement at %C"); | |
10894 | goto error; | |
10895 | break; | |
10896 | ||
a36eb9ee | 10897 | default: |
10898 | gcc_unreachable (); | |
10899 | } | |
3323e9b1 | 10900 | |
a36eb9ee | 10901 | /* Match the required =>. */ |
10902 | if (gfc_match (" =>") != MATCH_YES) | |
10903 | { | |
0d2b3c9c | 10904 | gfc_error ("Expected %<=>%> at %C"); |
a36eb9ee | 10905 | goto error; |
10906 | } | |
8db94b3b | 10907 | |
a36eb9ee | 10908 | /* Try to find existing GENERIC binding with this name / for this operator; |
10909 | if there is something, check that it is another GENERIC and then extend | |
10910 | it rather than building a new node. Otherwise, create it and put it | |
10911 | at the right position. */ | |
10912 | ||
10913 | switch (op_type) | |
10914 | { | |
9f732c4e | 10915 | case INTERFACE_DTIO: |
a36eb9ee | 10916 | case INTERFACE_USER_OP: |
10917 | case INTERFACE_GENERIC: | |
10918 | { | |
10919 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
10920 | gfc_symtree* st; | |
10921 | ||
10922 | st = gfc_find_symtree (is_op ? ns->tb_uop_root : ns->tb_sym_root, name); | |
f7b2c82b | 10923 | tb = st ? st->n.tb : NULL; |
a36eb9ee | 10924 | break; |
10925 | } | |
10926 | ||
10927 | case INTERFACE_INTRINSIC_OP: | |
10928 | tb = ns->tb_op[op]; | |
10929 | break; | |
10930 | ||
10931 | default: | |
10932 | gcc_unreachable (); | |
10933 | } | |
10934 | ||
10935 | if (tb) | |
10936 | { | |
3323e9b1 | 10937 | if (!tb->is_generic) |
e2f06a48 | 10938 | { |
a36eb9ee | 10939 | gcc_assert (op_type == INTERFACE_GENERIC); |
e2f06a48 | 10940 | gfc_error ("There's already a non-generic procedure with binding name" |
716da296 | 10941 | " %qs for the derived type %qs at %C", |
a36eb9ee | 10942 | bind_name, block->name); |
e2f06a48 | 10943 | goto error; |
10944 | } | |
10945 | ||
e2f06a48 | 10946 | if (tb->access != tbattr.access) |
10947 | { | |
10948 | gfc_error ("Binding at %C must have the same access as already" | |
716da296 | 10949 | " defined binding %qs", bind_name); |
e2f06a48 | 10950 | goto error; |
10951 | } | |
10952 | } | |
10953 | else | |
10954 | { | |
4a12b9ba | 10955 | tb = gfc_get_typebound_proc (NULL); |
e2f06a48 | 10956 | tb->where = gfc_current_locus; |
10957 | tb->access = tbattr.access; | |
10958 | tb->is_generic = 1; | |
10959 | tb->u.generic = NULL; | |
a36eb9ee | 10960 | |
10961 | switch (op_type) | |
10962 | { | |
9f732c4e | 10963 | case INTERFACE_DTIO: |
a36eb9ee | 10964 | case INTERFACE_GENERIC: |
10965 | case INTERFACE_USER_OP: | |
10966 | { | |
10967 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
f7b2c82b | 10968 | gfc_symtree* st = gfc_get_tbp_symtree (is_op ? &ns->tb_uop_root : |
10969 | &ns->tb_sym_root, name); | |
a36eb9ee | 10970 | gcc_assert (st); |
10971 | st->n.tb = tb; | |
10972 | ||
10973 | break; | |
10974 | } | |
8db94b3b | 10975 | |
a36eb9ee | 10976 | case INTERFACE_INTRINSIC_OP: |
10977 | ns->tb_op[op] = tb; | |
10978 | break; | |
10979 | ||
10980 | default: | |
10981 | gcc_unreachable (); | |
10982 | } | |
e2f06a48 | 10983 | } |
10984 | ||
10985 | /* Now, match all following names as specific targets. */ | |
10986 | do | |
10987 | { | |
10988 | gfc_symtree* target_st; | |
10989 | gfc_tbp_generic* target; | |
10990 | ||
10991 | m = gfc_match_name (name); | |
10992 | if (m == MATCH_ERROR) | |
10993 | goto error; | |
10994 | if (m == MATCH_NO) | |
10995 | { | |
10996 | gfc_error ("Expected specific binding name at %C"); | |
10997 | goto error; | |
10998 | } | |
10999 | ||
3323e9b1 | 11000 | target_st = gfc_get_tbp_symtree (&ns->tb_sym_root, name); |
e2f06a48 | 11001 | |
11002 | /* See if this is a duplicate specification. */ | |
11003 | for (target = tb->u.generic; target; target = target->next) | |
11004 | if (target_st == target->specific_st) | |
11005 | { | |
716da296 | 11006 | gfc_error ("%qs already defined as specific binding for the" |
11007 | " generic %qs at %C", name, bind_name); | |
e2f06a48 | 11008 | goto error; |
11009 | } | |
11010 | ||
e2f06a48 | 11011 | target = gfc_get_tbp_generic (); |
11012 | target->specific_st = target_st; | |
11013 | target->specific = NULL; | |
11014 | target->next = tb->u.generic; | |
5c0f7d99 | 11015 | target->is_operator = ((op_type == INTERFACE_USER_OP) |
11016 | || (op_type == INTERFACE_INTRINSIC_OP)); | |
e2f06a48 | 11017 | tb->u.generic = target; |
11018 | } | |
11019 | while (gfc_match (" ,") == MATCH_YES); | |
11020 | ||
11021 | /* Here should be the end. */ | |
11022 | if (gfc_match_eos () != MATCH_YES) | |
11023 | { | |
11024 | gfc_error ("Junk after GENERIC binding at %C"); | |
11025 | goto error; | |
11026 | } | |
11027 | ||
11028 | return MATCH_YES; | |
11029 | ||
11030 | error: | |
11031 | return MATCH_ERROR; | |
11032 | } | |
11033 | ||
11034 | ||
223f0f57 | 11035 | /* Match a FINAL declaration inside a derived type. */ |
11036 | ||
11037 | match | |
11038 | gfc_match_final_decl (void) | |
11039 | { | |
11040 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
11041 | gfc_symbol* sym; | |
11042 | match m; | |
11043 | gfc_namespace* module_ns; | |
11044 | bool first, last; | |
7fd88f6e | 11045 | gfc_symbol* block; |
223f0f57 | 11046 | |
519651c1 | 11047 | if (gfc_current_form == FORM_FREE) |
11048 | { | |
11049 | char c = gfc_peek_ascii_char (); | |
11050 | if (!gfc_is_whitespace (c) && c != ':') | |
11051 | return MATCH_NO; | |
11052 | } | |
8db94b3b | 11053 | |
7fd88f6e | 11054 | if (gfc_state_stack->state != COMP_DERIVED_CONTAINS) |
223f0f57 | 11055 | { |
519651c1 | 11056 | if (gfc_current_form == FORM_FIXED) |
11057 | return MATCH_NO; | |
11058 | ||
223f0f57 | 11059 | gfc_error ("FINAL declaration at %C must be inside a derived type " |
7fd88f6e | 11060 | "CONTAINS section"); |
223f0f57 | 11061 | return MATCH_ERROR; |
11062 | } | |
11063 | ||
7fd88f6e | 11064 | block = gfc_state_stack->previous->sym; |
11065 | gcc_assert (block); | |
223f0f57 | 11066 | |
7fd88f6e | 11067 | if (!gfc_state_stack->previous || !gfc_state_stack->previous->previous |
11068 | || gfc_state_stack->previous->previous->state != COMP_MODULE) | |
223f0f57 | 11069 | { |
11070 | gfc_error ("Derived type declaration with FINAL at %C must be in the" | |
11071 | " specification part of a MODULE"); | |
11072 | return MATCH_ERROR; | |
11073 | } | |
11074 | ||
11075 | module_ns = gfc_current_ns; | |
11076 | gcc_assert (module_ns); | |
11077 | gcc_assert (module_ns->proc_name->attr.flavor == FL_MODULE); | |
11078 | ||
11079 | /* Match optional ::, don't care about MATCH_YES or MATCH_NO. */ | |
11080 | if (gfc_match (" ::") == MATCH_ERROR) | |
11081 | return MATCH_ERROR; | |
11082 | ||
11083 | /* Match the sequence of procedure names. */ | |
11084 | first = true; | |
11085 | last = false; | |
11086 | do | |
11087 | { | |
11088 | gfc_finalizer* f; | |
11089 | ||
11090 | if (first && gfc_match_eos () == MATCH_YES) | |
11091 | { | |
11092 | gfc_error ("Empty FINAL at %C"); | |
11093 | return MATCH_ERROR; | |
11094 | } | |
11095 | ||
11096 | m = gfc_match_name (name); | |
11097 | if (m == MATCH_NO) | |
11098 | { | |
11099 | gfc_error ("Expected module procedure name at %C"); | |
11100 | return MATCH_ERROR; | |
11101 | } | |
11102 | else if (m != MATCH_YES) | |
11103 | return MATCH_ERROR; | |
11104 | ||
11105 | if (gfc_match_eos () == MATCH_YES) | |
11106 | last = true; | |
11107 | if (!last && gfc_match_char (',') != MATCH_YES) | |
11108 | { | |
0d2b3c9c | 11109 | gfc_error ("Expected %<,%> at %C"); |
223f0f57 | 11110 | return MATCH_ERROR; |
11111 | } | |
11112 | ||
11113 | if (gfc_get_symbol (name, module_ns, &sym)) | |
11114 | { | |
716da296 | 11115 | gfc_error ("Unknown procedure name %qs at %C", name); |
223f0f57 | 11116 | return MATCH_ERROR; |
11117 | } | |
11118 | ||
11119 | /* Mark the symbol as module procedure. */ | |
11120 | if (sym->attr.proc != PROC_MODULE | |
60e19868 | 11121 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
223f0f57 | 11122 | return MATCH_ERROR; |
11123 | ||
11124 | /* Check if we already have this symbol in the list, this is an error. */ | |
7fd88f6e | 11125 | for (f = block->f2k_derived->finalizers; f; f = f->next) |
e449e4dd | 11126 | if (f->proc_sym == sym) |
223f0f57 | 11127 | { |
c2a4993a | 11128 | gfc_error ("%qs at %C is already defined as FINAL procedure", |
223f0f57 | 11129 | name); |
11130 | return MATCH_ERROR; | |
11131 | } | |
11132 | ||
11133 | /* Add this symbol to the list of finalizers. */ | |
7fd88f6e | 11134 | gcc_assert (block->f2k_derived); |
c77c84dd | 11135 | sym->refs++; |
48d8ad5a | 11136 | f = XCNEW (gfc_finalizer); |
e449e4dd | 11137 | f->proc_sym = sym; |
11138 | f->proc_tree = NULL; | |
223f0f57 | 11139 | f->where = gfc_current_locus; |
7fd88f6e | 11140 | f->next = block->f2k_derived->finalizers; |
11141 | block->f2k_derived->finalizers = f; | |
223f0f57 | 11142 | |
11143 | first = false; | |
11144 | } | |
11145 | while (!last); | |
11146 | ||
11147 | return MATCH_YES; | |
11148 | } | |
36b0a1b0 | 11149 | |
11150 | ||
11151 | const ext_attr_t ext_attr_list[] = { | |
fa76a552 | 11152 | { "dllimport", EXT_ATTR_DLLIMPORT, "dllimport" }, |
11153 | { "dllexport", EXT_ATTR_DLLEXPORT, "dllexport" }, | |
11154 | { "cdecl", EXT_ATTR_CDECL, "cdecl" }, | |
11155 | { "stdcall", EXT_ATTR_STDCALL, "stdcall" }, | |
11156 | { "fastcall", EXT_ATTR_FASTCALL, "fastcall" }, | |
11157 | { "no_arg_check", EXT_ATTR_NO_ARG_CHECK, NULL }, | |
11158 | { NULL, EXT_ATTR_LAST, NULL } | |
36b0a1b0 | 11159 | }; |
11160 | ||
11161 | /* Match a !GCC$ ATTRIBUTES statement of the form: | |
11162 | !GCC$ ATTRIBUTES attribute-list :: var-name [, var-name] ... | |
11163 | When we come here, we have already matched the !GCC$ ATTRIBUTES string. | |
11164 | ||
11165 | TODO: We should support all GCC attributes using the same syntax for | |
11166 | the attribute list, i.e. the list in C | |
11167 | __attributes(( attribute-list )) | |
11168 | matches then | |
11169 | !GCC$ ATTRIBUTES attribute-list :: | |
11170 | Cf. c-parser.c's c_parser_attributes; the data can then directly be | |
11171 | saved into a TREE. | |
11172 | ||
11173 | As there is absolutely no risk of confusion, we should never return | |
11174 | MATCH_NO. */ | |
11175 | match | |
11176 | gfc_match_gcc_attributes (void) | |
8db94b3b | 11177 | { |
36b0a1b0 | 11178 | symbol_attribute attr; |
11179 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
11180 | unsigned id; | |
11181 | gfc_symbol *sym; | |
11182 | match m; | |
11183 | ||
11184 | gfc_clear_attr (&attr); | |
11185 | for(;;) | |
11186 | { | |
11187 | char ch; | |
11188 | ||
11189 | if (gfc_match_name (name) != MATCH_YES) | |
11190 | return MATCH_ERROR; | |
11191 | ||
11192 | for (id = 0; id < EXT_ATTR_LAST; id++) | |
11193 | if (strcmp (name, ext_attr_list[id].name) == 0) | |
11194 | break; | |
11195 | ||
11196 | if (id == EXT_ATTR_LAST) | |
11197 | { | |
11198 | gfc_error ("Unknown attribute in !GCC$ ATTRIBUTES statement at %C"); | |
11199 | return MATCH_ERROR; | |
11200 | } | |
11201 | ||
60e19868 | 11202 | if (!gfc_add_ext_attribute (&attr, (ext_attr_id_t)id, &gfc_current_locus)) |
36b0a1b0 | 11203 | return MATCH_ERROR; |
11204 | ||
11205 | gfc_gobble_whitespace (); | |
11206 | ch = gfc_next_ascii_char (); | |
11207 | if (ch == ':') | |
11208 | { | |
11209 | /* This is the successful exit condition for the loop. */ | |
11210 | if (gfc_next_ascii_char () == ':') | |
11211 | break; | |
11212 | } | |
11213 | ||
11214 | if (ch == ',') | |
11215 | continue; | |
11216 | ||
11217 | goto syntax; | |
11218 | } | |
11219 | ||
11220 | if (gfc_match_eos () == MATCH_YES) | |
11221 | goto syntax; | |
11222 | ||
11223 | for(;;) | |
11224 | { | |
11225 | m = gfc_match_name (name); | |
11226 | if (m != MATCH_YES) | |
11227 | return m; | |
11228 | ||
11229 | if (find_special (name, &sym, true)) | |
11230 | return MATCH_ERROR; | |
8db94b3b | 11231 | |
36b0a1b0 | 11232 | sym->attr.ext_attr |= attr.ext_attr; |
11233 | ||
11234 | if (gfc_match_eos () == MATCH_YES) | |
11235 | break; | |
11236 | ||
11237 | if (gfc_match_char (',') != MATCH_YES) | |
11238 | goto syntax; | |
11239 | } | |
11240 | ||
11241 | return MATCH_YES; | |
11242 | ||
11243 | syntax: | |
11244 | gfc_error ("Syntax error in !GCC$ ATTRIBUTES statement at %C"); | |
11245 | return MATCH_ERROR; | |
11246 | } | |
82841c8f | 11247 | |
11248 | ||
11249 | /* Match a !GCC$ UNROLL statement of the form: | |
11250 | !GCC$ UNROLL n | |
11251 | ||
11252 | The parameter n is the number of times we are supposed to unroll. | |
11253 | ||
11254 | When we come here, we have already matched the !GCC$ UNROLL string. */ | |
11255 | match | |
11256 | gfc_match_gcc_unroll (void) | |
11257 | { | |
11258 | int value; | |
11259 | ||
11260 | if (gfc_match_small_int (&value) == MATCH_YES) | |
11261 | { | |
11262 | if (value < 0 || value > USHRT_MAX) | |
11263 | { | |
11264 | gfc_error ("%<GCC unroll%> directive requires a" | |
11265 | " non-negative integral constant" | |
11266 | " less than or equal to %u at %C", | |
11267 | USHRT_MAX | |
11268 | ); | |
11269 | return MATCH_ERROR; | |
11270 | } | |
11271 | if (gfc_match_eos () == MATCH_YES) | |
11272 | { | |
11273 | directive_unroll = value == 0 ? 1 : value; | |
11274 | return MATCH_YES; | |
11275 | } | |
11276 | } | |
11277 | ||
11278 | gfc_error ("Syntax error in !GCC$ UNROLL directive at %C"); | |
11279 | return MATCH_ERROR; | |
11280 | } | |
f052211c | 11281 | |
11282 | /* Match a !GCC$ builtin (b) attributes simd flags form: | |
11283 | ||
11284 | The parameter b is name of a middle-end built-in. | |
11285 | Flags are one of: | |
11286 | - (empty) | |
11287 | - inbranch | |
11288 | - notinbranch | |
11289 | ||
11290 | When we come here, we have already matched the !GCC$ builtin string. */ | |
11291 | match | |
11292 | gfc_match_gcc_builtin (void) | |
11293 | { | |
11294 | char builtin[GFC_MAX_SYMBOL_LEN + 1]; | |
11295 | ||
11296 | if (gfc_match (" ( %n ) attributes simd", builtin) != MATCH_YES) | |
11297 | return MATCH_ERROR; | |
11298 | ||
11299 | gfc_simd_clause clause = SIMD_NONE; | |
11300 | if (gfc_match (" ( notinbranch ) ") == MATCH_YES) | |
11301 | clause = SIMD_NOTINBRANCH; | |
11302 | else if (gfc_match (" ( inbranch ) ") == MATCH_YES) | |
11303 | clause = SIMD_INBRANCH; | |
11304 | ||
11305 | if (gfc_vectorized_builtins == NULL) | |
11306 | gfc_vectorized_builtins = new hash_map<nofree_string_hash, int> (); | |
11307 | ||
11308 | char *r = XNEWVEC (char, strlen (builtin) + 32); | |
11309 | sprintf (r, "__builtin_%s", builtin); | |
11310 | ||
11311 | bool existed; | |
11312 | int &value = gfc_vectorized_builtins->get_or_insert (r, &existed); | |
11313 | value |= clause; | |
11314 | if (existed) | |
11315 | free (r); | |
11316 | ||
11317 | return MATCH_YES; | |
11318 | } |