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4ee9c684 | 1 | /* Declaration statement matcher |
fbd26352 | 2 | Copyright (C) 2002-2019 Free Software Foundation, Inc. |
4ee9c684 | 3 | Contributed by Andy Vaught |
4 | ||
c84b470d | 5 | This file is part of GCC. |
4ee9c684 | 6 | |
c84b470d | 7 | GCC is free software; you can redistribute it and/or modify it under |
8 | the terms of the GNU General Public License as published by the Free | |
bdabe786 | 9 | Software Foundation; either version 3, or (at your option) any later |
c84b470d | 10 | version. |
4ee9c684 | 11 | |
c84b470d | 12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
4ee9c684 | 16 | |
17 | You should have received a copy of the GNU General Public License | |
bdabe786 | 18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
4ee9c684 | 20 | |
4ee9c684 | 21 | #include "config.h" |
7436502b | 22 | #include "system.h" |
e4d6c7fc | 23 | #include "coretypes.h" |
4cba6f60 | 24 | #include "options.h" |
25 | #include "tree.h" | |
4ee9c684 | 26 | #include "gfortran.h" |
4cba6f60 | 27 | #include "stringpool.h" |
4ee9c684 | 28 | #include "match.h" |
29 | #include "parse.h" | |
126387b5 | 30 | #include "constructor.h" |
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; |
1d782298 | 599 | gfc_expr *e; |
b4f45d02 | 600 | match m; |
601 | ||
c286c294 | 602 | /* Before parsing the rest of a DATA statement, check F2008:c1206. */ |
603 | if ((gfc_current_state () == COMP_FUNCTION | |
604 | || gfc_current_state () == COMP_SUBROUTINE) | |
605 | && gfc_state_stack->previous->state == COMP_INTERFACE) | |
606 | { | |
607 | gfc_error ("DATA statement at %C cannot appear within an INTERFACE"); | |
608 | return MATCH_ERROR; | |
609 | } | |
610 | ||
cbbac028 | 611 | set_in_match_data (true); |
1bfea7e8 | 612 | |
b4f45d02 | 613 | for (;;) |
614 | { | |
c1977dbe | 615 | new_data = gfc_get_data (); |
616 | new_data->where = gfc_current_locus; | |
b4f45d02 | 617 | |
c1977dbe | 618 | m = top_var_list (new_data); |
b4f45d02 | 619 | if (m != MATCH_YES) |
620 | goto cleanup; | |
621 | ||
10e78772 | 622 | if (new_data->var->iter.var |
623 | && new_data->var->iter.var->ts.type == BT_INTEGER | |
624 | && new_data->var->iter.var->symtree->n.sym->attr.implied_index == 1 | |
625 | && new_data->var->list | |
626 | && new_data->var->list->expr | |
627 | && new_data->var->list->expr->ts.type == BT_CHARACTER | |
628 | && new_data->var->list->expr->ref | |
629 | && new_data->var->list->expr->ref->type == REF_SUBSTRING) | |
630 | { | |
631 | gfc_error ("Invalid substring in data-implied-do at %L in DATA " | |
632 | "statement", &new_data->var->list->expr->where); | |
633 | goto cleanup; | |
634 | } | |
635 | ||
1d782298 | 636 | /* Check for an entity with an allocatable component, which is not |
637 | allowed. */ | |
638 | e = new_data->var->expr; | |
639 | if (e) | |
640 | { | |
641 | bool invalid; | |
642 | ||
643 | invalid = false; | |
644 | for (gfc_ref *ref = e->ref; ref; ref = ref->next) | |
645 | if ((ref->type == REF_COMPONENT | |
646 | && ref->u.c.component->attr.allocatable) | |
647 | || (ref->type == REF_ARRAY | |
648 | && e->symtree->n.sym->attr.pointer != 1 | |
649 | && ref->u.ar.as && ref->u.ar.as->type == AS_DEFERRED)) | |
650 | invalid = true; | |
651 | ||
652 | if (invalid) | |
653 | { | |
654 | gfc_error ("Allocatable component or deferred-shaped array " | |
655 | "near %C in DATA statement"); | |
656 | goto cleanup; | |
657 | } | |
658 | } | |
659 | ||
c1977dbe | 660 | m = top_val_list (new_data); |
b4f45d02 | 661 | if (m != MATCH_YES) |
662 | goto cleanup; | |
663 | ||
c1977dbe | 664 | new_data->next = gfc_current_ns->data; |
665 | gfc_current_ns->data = new_data; | |
b4f45d02 | 666 | |
667 | if (gfc_match_eos () == MATCH_YES) | |
668 | break; | |
669 | ||
670 | gfc_match_char (','); /* Optional comma */ | |
671 | } | |
672 | ||
cbbac028 | 673 | set_in_match_data (false); |
1bfea7e8 | 674 | |
b4f45d02 | 675 | if (gfc_pure (NULL)) |
676 | { | |
677 | gfc_error ("DATA statement at %C is not allowed in a PURE procedure"); | |
678 | return MATCH_ERROR; | |
679 | } | |
c77badf3 | 680 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
8b0a2e85 | 681 | |
b4f45d02 | 682 | return MATCH_YES; |
683 | ||
684 | cleanup: | |
cbbac028 | 685 | set_in_match_data (false); |
c1977dbe | 686 | gfc_free_data (new_data); |
b4f45d02 | 687 | return MATCH_ERROR; |
688 | } | |
689 | ||
690 | ||
691 | /************************ Declaration statements *********************/ | |
692 | ||
e97ac7c0 | 693 | |
d7cd448a | 694 | /* Like gfc_match_init_expr, but matches a 'clist' (old-style initialization |
695 | list). The difference here is the expression is a list of constants | |
7d7125df | 696 | and is surrounded by '/'. |
d7cd448a | 697 | The typespec ts must match the typespec of the variable which the |
698 | clist is initializing. | |
7d7125df | 699 | The arrayspec tells whether this should match a list of constants |
d7cd448a | 700 | corresponding to array elements or a scalar (as == NULL). */ |
701 | ||
702 | static match | |
703 | match_clist_expr (gfc_expr **result, gfc_typespec *ts, gfc_array_spec *as) | |
704 | { | |
705 | gfc_constructor_base array_head = NULL; | |
706 | gfc_expr *expr = NULL; | |
d9c759d9 | 707 | match m = MATCH_ERROR; |
d7cd448a | 708 | locus where; |
f1e4e020 | 709 | mpz_t repeat, cons_size, as_size; |
d7cd448a | 710 | bool scalar; |
711 | int cmp; | |
712 | ||
713 | gcc_assert (ts); | |
714 | ||
d7cd448a | 715 | /* We have already matched '/' - now look for a constant list, as with |
716 | top_val_list from decl.c, but append the result to an array. */ | |
717 | if (gfc_match ("/") == MATCH_YES) | |
718 | { | |
719 | gfc_error ("Empty old style initializer list at %C"); | |
d9c759d9 | 720 | return MATCH_ERROR; |
d7cd448a | 721 | } |
722 | ||
723 | where = gfc_current_locus; | |
d9c759d9 | 724 | scalar = !as || !as->rank; |
725 | ||
726 | if (!scalar && !spec_size (as, &as_size)) | |
727 | { | |
728 | gfc_error ("Array in initializer list at %L must have an explicit shape", | |
729 | as->type == AS_EXPLICIT ? &as->upper[0]->where : &where); | |
730 | /* Nothing to cleanup yet. */ | |
731 | return MATCH_ERROR; | |
732 | } | |
733 | ||
734 | mpz_init_set_ui (repeat, 0); | |
735 | ||
d7cd448a | 736 | for (;;) |
737 | { | |
738 | m = match_data_constant (&expr); | |
739 | if (m != MATCH_YES) | |
740 | expr = NULL; /* match_data_constant may set expr to garbage */ | |
741 | if (m == MATCH_NO) | |
742 | goto syntax; | |
743 | if (m == MATCH_ERROR) | |
744 | goto cleanup; | |
745 | ||
746 | /* Found r in repeat spec r*c; look for the constant to repeat. */ | |
747 | if ( gfc_match_char ('*') == MATCH_YES) | |
748 | { | |
749 | if (scalar) | |
750 | { | |
751 | gfc_error ("Repeat spec invalid in scalar initializer at %C"); | |
752 | goto cleanup; | |
753 | } | |
754 | if (expr->ts.type != BT_INTEGER) | |
755 | { | |
756 | gfc_error ("Repeat spec must be an integer at %C"); | |
757 | goto cleanup; | |
758 | } | |
759 | mpz_set (repeat, expr->value.integer); | |
760 | gfc_free_expr (expr); | |
761 | expr = NULL; | |
762 | ||
763 | m = match_data_constant (&expr); | |
764 | if (m == MATCH_NO) | |
d9c759d9 | 765 | { |
766 | m = MATCH_ERROR; | |
767 | gfc_error ("Expected data constant after repeat spec at %C"); | |
768 | } | |
d7cd448a | 769 | if (m != MATCH_YES) |
770 | goto cleanup; | |
771 | } | |
772 | /* No repeat spec, we matched the data constant itself. */ | |
773 | else | |
774 | mpz_set_ui (repeat, 1); | |
775 | ||
776 | if (!scalar) | |
777 | { | |
778 | /* Add the constant initializer as many times as repeated. */ | |
779 | for (; mpz_cmp_ui (repeat, 0) > 0; mpz_sub_ui (repeat, repeat, 1)) | |
780 | { | |
781 | /* Make sure types of elements match */ | |
782 | if(ts && !gfc_compare_types (&expr->ts, ts) | |
783 | && !gfc_convert_type (expr, ts, 1)) | |
784 | goto cleanup; | |
785 | ||
786 | gfc_constructor_append_expr (&array_head, | |
787 | gfc_copy_expr (expr), &gfc_current_locus); | |
788 | } | |
789 | ||
790 | gfc_free_expr (expr); | |
791 | expr = NULL; | |
792 | } | |
793 | ||
794 | /* For scalar initializers quit after one element. */ | |
795 | else | |
796 | { | |
797 | if(gfc_match_char ('/') != MATCH_YES) | |
798 | { | |
799 | gfc_error ("End of scalar initializer expected at %C"); | |
800 | goto cleanup; | |
801 | } | |
802 | break; | |
803 | } | |
804 | ||
805 | if (gfc_match_char ('/') == MATCH_YES) | |
806 | break; | |
807 | if (gfc_match_char (',') == MATCH_NO) | |
808 | goto syntax; | |
809 | } | |
810 | ||
d9c759d9 | 811 | /* If we break early from here out, we encountered an error. */ |
812 | m = MATCH_ERROR; | |
813 | ||
d7cd448a | 814 | /* Set up expr as an array constructor. */ |
815 | if (!scalar) | |
816 | { | |
817 | expr = gfc_get_array_expr (ts->type, ts->kind, &where); | |
818 | expr->ts = *ts; | |
819 | expr->value.constructor = array_head; | |
820 | ||
821 | expr->rank = as->rank; | |
822 | expr->shape = gfc_get_shape (expr->rank); | |
823 | ||
f1e4e020 | 824 | /* Validate sizes. We built expr ourselves, so cons_size will be |
825 | constant (we fail above for non-constant expressions). | |
d9c759d9 | 826 | We still need to verify that the sizes match. */ |
f1e4e020 | 827 | gcc_assert (gfc_array_size (expr, &cons_size)); |
d9c759d9 | 828 | cmp = mpz_cmp (cons_size, as_size); |
829 | if (cmp < 0) | |
830 | gfc_error ("Not enough elements in array initializer at %C"); | |
831 | else if (cmp > 0) | |
832 | gfc_error ("Too many elements in array initializer at %C"); | |
f1e4e020 | 833 | mpz_clear (cons_size); |
d7cd448a | 834 | if (cmp) |
f1e4e020 | 835 | goto cleanup; |
d7cd448a | 836 | } |
837 | ||
838 | /* Make sure scalar types match. */ | |
839 | else if (!gfc_compare_types (&expr->ts, ts) | |
840 | && !gfc_convert_type (expr, ts, 1)) | |
841 | goto cleanup; | |
842 | ||
843 | if (expr->ts.u.cl) | |
844 | expr->ts.u.cl->length_from_typespec = 1; | |
845 | ||
846 | *result = expr; | |
d9c759d9 | 847 | m = MATCH_YES; |
848 | goto done; | |
d7cd448a | 849 | |
850 | syntax: | |
d9c759d9 | 851 | m = MATCH_ERROR; |
d7cd448a | 852 | gfc_error ("Syntax error in old style initializer list at %C"); |
853 | ||
854 | cleanup: | |
855 | if (expr) | |
856 | expr->value.constructor = NULL; | |
857 | gfc_free_expr (expr); | |
858 | gfc_constructor_free (array_head); | |
d9c759d9 | 859 | |
860 | done: | |
d7cd448a | 861 | mpz_clear (repeat); |
d9c759d9 | 862 | if (!scalar) |
863 | mpz_clear (as_size); | |
864 | return m; | |
d7cd448a | 865 | } |
866 | ||
867 | ||
df084314 | 868 | /* Auxiliary function to merge DIMENSION and CODIMENSION array specs. */ |
e97ac7c0 | 869 | |
60e19868 | 870 | static bool |
e97ac7c0 | 871 | merge_array_spec (gfc_array_spec *from, gfc_array_spec *to, bool copy) |
872 | { | |
a83e9b8b | 873 | int i, j; |
e97ac7c0 | 874 | |
9b58b4c7 | 875 | if ((from->type == AS_ASSUMED_RANK && to->corank) |
876 | || (to->type == AS_ASSUMED_RANK && from->corank)) | |
877 | { | |
878 | gfc_error ("The assumed-rank array at %C shall not have a codimension"); | |
60e19868 | 879 | return false; |
9b58b4c7 | 880 | } |
f00f6dd6 | 881 | |
e97ac7c0 | 882 | if (to->rank == 0 && from->rank > 0) |
883 | { | |
884 | to->rank = from->rank; | |
885 | to->type = from->type; | |
886 | to->cray_pointee = from->cray_pointee; | |
887 | to->cp_was_assumed = from->cp_was_assumed; | |
888 | ||
889 | for (i = 0; i < to->corank; i++) | |
890 | { | |
a83e9b8b | 891 | /* Do not exceed the limits on lower[] and upper[]. gfortran |
892 | cleans up elsewhere. */ | |
893 | j = from->rank + i; | |
894 | if (j >= GFC_MAX_DIMENSIONS) | |
895 | break; | |
896 | ||
897 | to->lower[j] = to->lower[i]; | |
898 | to->upper[j] = to->upper[i]; | |
e97ac7c0 | 899 | } |
900 | for (i = 0; i < from->rank; i++) | |
901 | { | |
902 | if (copy) | |
903 | { | |
904 | to->lower[i] = gfc_copy_expr (from->lower[i]); | |
905 | to->upper[i] = gfc_copy_expr (from->upper[i]); | |
906 | } | |
907 | else | |
908 | { | |
909 | to->lower[i] = from->lower[i]; | |
910 | to->upper[i] = from->upper[i]; | |
911 | } | |
912 | } | |
913 | } | |
914 | else if (to->corank == 0 && from->corank > 0) | |
915 | { | |
916 | to->corank = from->corank; | |
917 | to->cotype = from->cotype; | |
918 | ||
919 | for (i = 0; i < from->corank; i++) | |
920 | { | |
a83e9b8b | 921 | /* Do not exceed the limits on lower[] and upper[]. gfortran |
922 | cleans up elsewhere. */ | |
923 | j = to->rank + i; | |
924 | if (j >= GFC_MAX_DIMENSIONS) | |
925 | break; | |
926 | ||
e97ac7c0 | 927 | if (copy) |
928 | { | |
a83e9b8b | 929 | to->lower[j] = gfc_copy_expr (from->lower[i]); |
930 | to->upper[j] = gfc_copy_expr (from->upper[i]); | |
e97ac7c0 | 931 | } |
932 | else | |
933 | { | |
a83e9b8b | 934 | to->lower[j] = from->lower[i]; |
935 | to->upper[j] = from->upper[i]; | |
e97ac7c0 | 936 | } |
937 | } | |
938 | } | |
9b58b4c7 | 939 | |
ca5fc2b6 | 940 | if (to->rank + to->corank > GFC_MAX_DIMENSIONS) |
a83e9b8b | 941 | { |
942 | gfc_error ("Sum of array rank %d and corank %d at %C exceeds maximum " | |
943 | "allowed dimensions of %d", | |
944 | to->rank, to->corank, GFC_MAX_DIMENSIONS); | |
945 | to->corank = GFC_MAX_DIMENSIONS - to->rank; | |
946 | return false; | |
947 | } | |
60e19868 | 948 | return true; |
e97ac7c0 | 949 | } |
950 | ||
951 | ||
4ee9c684 | 952 | /* Match an intent specification. Since this can only happen after an |
953 | INTENT word, a legal intent-spec must follow. */ | |
954 | ||
955 | static sym_intent | |
956 | match_intent_spec (void) | |
957 | { | |
958 | ||
959 | if (gfc_match (" ( in out )") == MATCH_YES) | |
960 | return INTENT_INOUT; | |
961 | if (gfc_match (" ( in )") == MATCH_YES) | |
962 | return INTENT_IN; | |
963 | if (gfc_match (" ( out )") == MATCH_YES) | |
964 | return INTENT_OUT; | |
965 | ||
966 | gfc_error ("Bad INTENT specification at %C"); | |
967 | return INTENT_UNKNOWN; | |
968 | } | |
969 | ||
970 | ||
971 | /* Matches a character length specification, which is either a | |
3e715c81 | 972 | specification expression, '*', or ':'. */ |
4ee9c684 | 973 | |
974 | static match | |
3e715c81 | 975 | char_len_param_value (gfc_expr **expr, bool *deferred) |
4ee9c684 | 976 | { |
294d58d3 | 977 | match m; |
978 | ||
3e715c81 | 979 | *expr = NULL; |
980 | *deferred = false; | |
981 | ||
4ee9c684 | 982 | if (gfc_match_char ('*') == MATCH_YES) |
3e715c81 | 983 | return MATCH_YES; |
984 | ||
985 | if (gfc_match_char (':') == MATCH_YES) | |
4ee9c684 | 986 | { |
34bf7ba5 | 987 | if (!gfc_notify_std (GFC_STD_F2003, "deferred type parameter at %C")) |
3e715c81 | 988 | return MATCH_ERROR; |
989 | ||
990 | *deferred = true; | |
991 | ||
4ee9c684 | 992 | return MATCH_YES; |
993 | } | |
994 | ||
294d58d3 | 995 | m = gfc_match_expr (expr); |
40de255b | 996 | |
34bf7ba5 | 997 | if (m == MATCH_NO || m == MATCH_ERROR) |
998 | return m; | |
999 | ||
1000 | if (!gfc_expr_check_typed (*expr, gfc_current_ns, false)) | |
40de255b | 1001 | return MATCH_ERROR; |
1002 | ||
34bf7ba5 | 1003 | if ((*expr)->expr_type == EXPR_FUNCTION) |
294d58d3 | 1004 | { |
9c5a8acc | 1005 | if ((*expr)->ts.type == BT_INTEGER |
1006 | || ((*expr)->ts.type == BT_UNKNOWN | |
1007 | && strcmp((*expr)->symtree->name, "null") != 0)) | |
1008 | return MATCH_YES; | |
1009 | ||
1010 | goto syntax; | |
1011 | } | |
1012 | else if ((*expr)->expr_type == EXPR_CONSTANT) | |
1013 | { | |
1014 | /* F2008, 4.4.3.1: The length is a type parameter; its kind is | |
1015 | processor dependent and its value is greater than or equal to zero. | |
1016 | F2008, 4.4.3.2: If the character length parameter value evaluates | |
1017 | to a negative value, the length of character entities declared | |
1018 | is zero. */ | |
1019 | ||
1020 | if ((*expr)->ts.type == BT_INTEGER) | |
294d58d3 | 1021 | { |
9c5a8acc | 1022 | if (mpz_cmp_si ((*expr)->value.integer, 0) < 0) |
1023 | mpz_set_si ((*expr)->value.integer, 0); | |
294d58d3 | 1024 | } |
9c5a8acc | 1025 | else |
1026 | goto syntax; | |
294d58d3 | 1027 | } |
9c5a8acc | 1028 | else if ((*expr)->expr_type == EXPR_ARRAY) |
1029 | goto syntax; | |
1030 | else if ((*expr)->expr_type == EXPR_VARIABLE) | |
1031 | { | |
165b422e | 1032 | bool t; |
9c5a8acc | 1033 | gfc_expr *e; |
1034 | ||
1035 | e = gfc_copy_expr (*expr); | |
1036 | ||
1037 | /* This catches the invalid code "[character(m(2:3)) :: 'x', 'y']", | |
1038 | which causes an ICE if gfc_reduce_init_expr() is called. */ | |
47977082 | 1039 | if (e->ref && e->ref->type == REF_ARRAY |
1040 | && e->ref->u.ar.type == AR_UNKNOWN | |
9c5a8acc | 1041 | && e->ref->u.ar.dimen_type[0] == DIMEN_RANGE) |
1042 | goto syntax; | |
1043 | ||
165b422e | 1044 | t = gfc_reduce_init_expr (e); |
1045 | ||
42f172d0 | 1046 | if (!t && e->ts.type == BT_UNKNOWN |
1047 | && e->symtree->n.sym->attr.untyped == 1 | |
a246a22d | 1048 | && (flag_implicit_none |
1049 | || e->symtree->n.sym->ns->seen_implicit_none == 1 | |
42f172d0 | 1050 | || e->symtree->n.sym->ns->parent->seen_implicit_none == 1)) |
165b422e | 1051 | { |
1052 | gfc_free_expr (e); | |
1053 | goto syntax; | |
1054 | } | |
34bf7ba5 | 1055 | |
47977082 | 1056 | if ((e->ref && e->ref->type == REF_ARRAY |
76e207a9 | 1057 | && e->ref->u.ar.type != AR_ELEMENT) |
9c5a8acc | 1058 | || (!e->ref && e->expr_type == EXPR_ARRAY)) |
1059 | { | |
1060 | gfc_free_expr (e); | |
1061 | goto syntax; | |
1062 | } | |
1063 | ||
1064 | gfc_free_expr (e); | |
1065 | } | |
34bf7ba5 | 1066 | |
294d58d3 | 1067 | return m; |
1068 | ||
1069 | syntax: | |
9c5a8acc | 1070 | gfc_error ("Scalar INTEGER expression expected at %L", &(*expr)->where); |
294d58d3 | 1071 | return MATCH_ERROR; |
4ee9c684 | 1072 | } |
1073 | ||
1074 | ||
1075 | /* A character length is a '*' followed by a literal integer or a | |
1076 | char_len_param_value in parenthesis. */ | |
1077 | ||
1078 | static match | |
ae0426ce | 1079 | match_char_length (gfc_expr **expr, bool *deferred, bool obsolescent_check) |
4ee9c684 | 1080 | { |
3bd3b616 | 1081 | int length; |
4ee9c684 | 1082 | match m; |
1083 | ||
8db94b3b | 1084 | *deferred = false; |
4ee9c684 | 1085 | m = gfc_match_char ('*'); |
1086 | if (m != MATCH_YES) | |
1087 | return m; | |
1088 | ||
3bd3b616 | 1089 | m = gfc_match_small_literal_int (&length, NULL); |
4ee9c684 | 1090 | if (m == MATCH_ERROR) |
1091 | return m; | |
1092 | ||
1093 | if (m == MATCH_YES) | |
1094 | { | |
ae0426ce | 1095 | if (obsolescent_check |
60e19868 | 1096 | && !gfc_notify_std (GFC_STD_F95_OBS, "Old-style character length at %C")) |
8e9b41f0 | 1097 | return MATCH_ERROR; |
9f4d9f83 | 1098 | *expr = gfc_get_int_expr (gfc_charlen_int_kind, NULL, length); |
4ee9c684 | 1099 | return m; |
1100 | } | |
1101 | ||
1102 | if (gfc_match_char ('(') == MATCH_NO) | |
1103 | goto syntax; | |
1104 | ||
3e715c81 | 1105 | m = char_len_param_value (expr, deferred); |
077932f9 | 1106 | if (m != MATCH_YES && gfc_matching_function) |
1107 | { | |
1108 | gfc_undo_symbols (); | |
1109 | m = MATCH_YES; | |
1110 | } | |
1111 | ||
4ee9c684 | 1112 | if (m == MATCH_ERROR) |
1113 | return m; | |
1114 | if (m == MATCH_NO) | |
1115 | goto syntax; | |
1116 | ||
1117 | if (gfc_match_char (')') == MATCH_NO) | |
1118 | { | |
1119 | gfc_free_expr (*expr); | |
1120 | *expr = NULL; | |
1121 | goto syntax; | |
1122 | } | |
1123 | ||
1124 | return MATCH_YES; | |
1125 | ||
1126 | syntax: | |
1127 | gfc_error ("Syntax error in character length specification at %C"); | |
1128 | return MATCH_ERROR; | |
1129 | } | |
1130 | ||
1131 | ||
ee893be6 | 1132 | /* Special subroutine for finding a symbol. Check if the name is found |
1133 | in the current name space. If not, and we're compiling a function or | |
1134 | subroutine and the parent compilation unit is an interface, then check | |
1135 | to see if the name we've been given is the name of the interface | |
1136 | (located in another namespace). */ | |
4ee9c684 | 1137 | |
1138 | static int | |
36b0a1b0 | 1139 | find_special (const char *name, gfc_symbol **result, bool allow_subroutine) |
4ee9c684 | 1140 | { |
1141 | gfc_state_data *s; | |
36b0a1b0 | 1142 | gfc_symtree *st; |
ee893be6 | 1143 | int i; |
4ee9c684 | 1144 | |
36b0a1b0 | 1145 | i = gfc_get_sym_tree (name, NULL, &st, allow_subroutine); |
e14bee04 | 1146 | if (i == 0) |
36b0a1b0 | 1147 | { |
1148 | *result = st ? st->n.sym : NULL; | |
1149 | goto end; | |
1150 | } | |
e14bee04 | 1151 | |
4ee9c684 | 1152 | if (gfc_current_state () != COMP_SUBROUTINE |
1153 | && gfc_current_state () != COMP_FUNCTION) | |
ee893be6 | 1154 | goto end; |
4ee9c684 | 1155 | |
1156 | s = gfc_state_stack->previous; | |
1157 | if (s == NULL) | |
ee893be6 | 1158 | goto end; |
4ee9c684 | 1159 | |
1160 | if (s->state != COMP_INTERFACE) | |
ee893be6 | 1161 | goto end; |
4ee9c684 | 1162 | if (s->sym == NULL) |
f6d0e37a | 1163 | goto end; /* Nameless interface. */ |
4ee9c684 | 1164 | |
1165 | if (strcmp (name, s->sym->name) == 0) | |
1166 | { | |
1167 | *result = s->sym; | |
1168 | return 0; | |
1169 | } | |
1170 | ||
ee893be6 | 1171 | end: |
1172 | return i; | |
4ee9c684 | 1173 | } |
1174 | ||
1175 | ||
1176 | /* Special subroutine for getting a symbol node associated with a | |
1177 | procedure name, used in SUBROUTINE and FUNCTION statements. The | |
1178 | symbol is created in the parent using with symtree node in the | |
1179 | child unit pointing to the symbol. If the current namespace has no | |
1180 | parent, then the symbol is just created in the current unit. */ | |
1181 | ||
1182 | static int | |
1a9745d2 | 1183 | get_proc_name (const char *name, gfc_symbol **result, bool module_fcn_entry) |
4ee9c684 | 1184 | { |
1185 | gfc_symtree *st; | |
1186 | gfc_symbol *sym; | |
2ddb8ed9 | 1187 | int rc = 0; |
4ee9c684 | 1188 | |
d77f260f | 1189 | /* Module functions have to be left in their own namespace because |
1190 | they have potentially (almost certainly!) already been referenced. | |
1191 | In this sense, they are rather like external functions. This is | |
1192 | fixed up in resolve.c(resolve_entries), where the symbol name- | |
1193 | space is set to point to the master function, so that the fake | |
1194 | result mechanism can work. */ | |
1195 | if (module_fcn_entry) | |
861d824f | 1196 | { |
1197 | /* Present if entry is declared to be a module procedure. */ | |
1198 | rc = gfc_find_symbol (name, gfc_current_ns->parent, 0, result); | |
c6a05992 | 1199 | |
861d824f | 1200 | if (*result == NULL) |
1201 | rc = gfc_get_symbol (name, NULL, result); | |
a78f714d | 1202 | else if (!gfc_get_symbol (name, NULL, &sym) && sym |
c6a05992 | 1203 | && (*result)->ts.type == BT_UNKNOWN |
1204 | && sym->attr.flavor == FL_UNKNOWN) | |
1205 | /* Pick up the typespec for the entry, if declared in the function | |
1206 | body. Note that this symbol is FL_UNKNOWN because it will | |
1207 | only have appeared in a type declaration. The local symtree | |
1208 | is set to point to the module symbol and a unique symtree | |
1209 | to the local version. This latter ensures a correct clearing | |
1210 | of the symbols. */ | |
a78f714d | 1211 | { |
1212 | /* If the ENTRY proceeds its specification, we need to ensure | |
1213 | that this does not raise a "has no IMPLICIT type" error. */ | |
1214 | if (sym->ts.type == BT_UNKNOWN) | |
2168078b | 1215 | sym->attr.untyped = 1; |
a78f714d | 1216 | |
2168078b | 1217 | (*result)->ts = sym->ts; |
a78f714d | 1218 | |
1219 | /* Put the symbol in the procedure namespace so that, should | |
69b1505f | 1220 | the ENTRY precede its specification, the specification |
a78f714d | 1221 | can be applied. */ |
1222 | (*result)->ns = gfc_current_ns; | |
1223 | ||
1224 | gfc_find_sym_tree (name, gfc_current_ns, 0, &st); | |
1225 | st->n.sym = *result; | |
1226 | st = gfc_get_unique_symtree (gfc_current_ns); | |
c77c84dd | 1227 | sym->refs++; |
a78f714d | 1228 | st->n.sym = sym; |
1229 | } | |
861d824f | 1230 | } |
858f9894 | 1231 | else |
1232 | rc = gfc_get_symbol (name, gfc_current_ns->parent, result); | |
4ee9c684 | 1233 | |
2ddb8ed9 | 1234 | if (rc) |
1235 | return rc; | |
1236 | ||
858f9894 | 1237 | sym = *result; |
97323566 | 1238 | if (sym->attr.proc == PROC_ST_FUNCTION) |
1239 | return rc; | |
4ee9c684 | 1240 | |
b229bdf2 | 1241 | if (sym->attr.module_procedure && sym->attr.if_source == IFSRC_IFBODY) |
4b8eb6ca | 1242 | { |
1243 | /* Create a partially populated interface symbol to carry the | |
1244 | characteristics of the procedure and the result. */ | |
dee7f6d1 | 1245 | sym->tlink = gfc_new_symbol (name, sym->ns); |
b229bdf2 | 1246 | gfc_add_type (sym->tlink, &(sym->ts), &gfc_current_locus); |
dee7f6d1 | 1247 | gfc_copy_attr (&sym->tlink->attr, &sym->attr, NULL); |
4b8eb6ca | 1248 | if (sym->attr.dimension) |
dee7f6d1 | 1249 | sym->tlink->as = gfc_copy_array_spec (sym->as); |
4b8eb6ca | 1250 | |
1251 | /* Ideally, at this point, a copy would be made of the formal | |
1252 | arguments and their namespace. However, this does not appear | |
1253 | to be necessary, albeit at the expense of not being able to | |
1254 | use gfc_compare_interfaces directly. */ | |
1255 | ||
1256 | if (sym->result && sym->result != sym) | |
1257 | { | |
dee7f6d1 | 1258 | sym->tlink->result = sym->result; |
4b8eb6ca | 1259 | sym->result = NULL; |
1260 | } | |
1261 | else if (sym->result) | |
1262 | { | |
dee7f6d1 | 1263 | sym->tlink->result = sym->tlink; |
4b8eb6ca | 1264 | } |
1265 | } | |
1266 | else if (sym && !sym->gfc_new | |
1267 | && gfc_current_state () != COMP_INTERFACE) | |
858f9894 | 1268 | { |
16f49153 | 1269 | /* Trap another encompassed procedure with the same name. All |
1270 | these conditions are necessary to avoid picking up an entry | |
1271 | whose name clashes with that of the encompassing procedure; | |
c77c84dd | 1272 | this is handled using gsymbols to register unique, globally |
16f49153 | 1273 | accessible names. */ |
858f9894 | 1274 | if (sym->attr.flavor != 0 |
1a9745d2 | 1275 | && sym->attr.proc != 0 |
05b3eb93 | 1276 | && (sym->attr.subroutine || sym->attr.function || sym->attr.entry) |
1a9745d2 | 1277 | && sym->attr.if_source != IFSRC_UNKNOWN) |
33994aeb | 1278 | { |
1279 | gfc_error_now ("Procedure %qs at %C is already defined at %L", | |
1280 | name, &sym->declared_at); | |
1281 | return true; | |
1282 | } | |
05b3eb93 | 1283 | if (sym->attr.flavor != 0 |
1284 | && sym->attr.entry && sym->attr.if_source != IFSRC_UNKNOWN) | |
33994aeb | 1285 | { |
1286 | gfc_error_now ("Procedure %qs at %C is already defined at %L", | |
1287 | name, &sym->declared_at); | |
1288 | return true; | |
1289 | } | |
05b3eb93 | 1290 | |
3eb3b784 | 1291 | if (sym->attr.external && sym->attr.procedure |
1292 | && gfc_current_state () == COMP_CONTAINS) | |
33994aeb | 1293 | { |
1294 | gfc_error_now ("Contained procedure %qs at %C clashes with " | |
1295 | "procedure defined at %L", | |
1296 | name, &sym->declared_at); | |
1297 | return true; | |
1298 | } | |
3eb3b784 | 1299 | |
5720fd2f | 1300 | /* Trap a procedure with a name the same as interface in the |
1301 | encompassing scope. */ | |
1302 | if (sym->attr.generic != 0 | |
db697236 | 1303 | && (sym->attr.subroutine || sym->attr.function) |
1304 | && !sym->attr.mod_proc) | |
33994aeb | 1305 | { |
1306 | gfc_error_now ("Name %qs at %C is already defined" | |
1307 | " as a generic interface at %L", | |
1308 | name, &sym->declared_at); | |
1309 | return true; | |
1310 | } | |
5720fd2f | 1311 | |
858f9894 | 1312 | /* Trap declarations of attributes in encompassing scope. The |
1313 | signature for this is that ts.kind is set. Legitimate | |
1314 | references only set ts.type. */ | |
1315 | if (sym->ts.kind != 0 | |
1a9745d2 | 1316 | && !sym->attr.implicit_type |
1317 | && sym->attr.proc == 0 | |
1318 | && gfc_current_ns->parent != NULL | |
1319 | && sym->attr.access == 0 | |
1320 | && !module_fcn_entry) | |
33994aeb | 1321 | { |
1322 | gfc_error_now ("Procedure %qs at %C has an explicit interface " | |
b229bdf2 | 1323 | "from a previous declaration", name); |
33994aeb | 1324 | return true; |
1325 | } | |
b229bdf2 | 1326 | } |
1327 | ||
dc38f1d9 | 1328 | /* C1246 (R1225) MODULE shall appear only in the function-stmt or |
1329 | subroutine-stmt of a module subprogram or of a nonabstract interface | |
1330 | body that is declared in the scoping unit of a module or submodule. */ | |
1331 | if (sym->attr.external | |
1332 | && (sym->attr.subroutine || sym->attr.function) | |
1333 | && sym->attr.if_source == IFSRC_IFBODY | |
1334 | && !current_attr.module_procedure | |
1335 | && sym->attr.proc == PROC_MODULE | |
1336 | && gfc_state_stack->state == COMP_CONTAINS) | |
33994aeb | 1337 | { |
1338 | gfc_error_now ("Procedure %qs defined in interface body at %L " | |
1339 | "clashes with internal procedure defined at %C", | |
1340 | name, &sym->declared_at); | |
1341 | return true; | |
1342 | } | |
dc38f1d9 | 1343 | |
1344 | if (sym && !sym->gfc_new | |
1345 | && sym->attr.flavor != FL_UNKNOWN | |
1346 | && sym->attr.referenced == 0 && sym->attr.subroutine == 1 | |
1347 | && gfc_state_stack->state == COMP_CONTAINS | |
1348 | && gfc_state_stack->previous->state == COMP_SUBROUTINE) | |
33994aeb | 1349 | { |
1350 | gfc_error_now ("Procedure %qs at %C is already defined at %L", | |
1351 | name, &sym->declared_at); | |
1352 | return true; | |
1353 | } | |
858f9894 | 1354 | |
1355 | if (gfc_current_ns->parent == NULL || *result == NULL) | |
1356 | return rc; | |
4ee9c684 | 1357 | |
d77f260f | 1358 | /* Module function entries will already have a symtree in |
1359 | the current namespace but will need one at module level. */ | |
1360 | if (module_fcn_entry) | |
861d824f | 1361 | { |
1362 | /* Present if entry is declared to be a module procedure. */ | |
1363 | rc = gfc_find_sym_tree (name, gfc_current_ns->parent, 0, &st); | |
1364 | if (st == NULL) | |
1365 | st = gfc_new_symtree (&gfc_current_ns->parent->sym_root, name); | |
1366 | } | |
d77f260f | 1367 | else |
1368 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); | |
4ee9c684 | 1369 | |
4ee9c684 | 1370 | st->n.sym = sym; |
1371 | sym->refs++; | |
1372 | ||
f6d0e37a | 1373 | /* See if the procedure should be a module procedure. */ |
4ee9c684 | 1374 | |
d77f260f | 1375 | if (((sym->ns->proc_name != NULL |
b229bdf2 | 1376 | && sym->ns->proc_name->attr.flavor == FL_MODULE |
1377 | && sym->attr.proc != PROC_MODULE) | |
1378 | || (module_fcn_entry && sym->attr.proc != PROC_MODULE)) | |
1379 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) | |
4ee9c684 | 1380 | rc = 2; |
1381 | ||
1382 | return rc; | |
1383 | } | |
1384 | ||
1385 | ||
c5d33754 | 1386 | /* Verify that the given symbol representing a parameter is C |
1387 | interoperable, by checking to see if it was marked as such after | |
1388 | its declaration. If the given symbol is not interoperable, a | |
1389 | warning is reported, thus removing the need to return the status to | |
1390 | the calling function. The standard does not require the user use | |
1391 | one of the iso_c_binding named constants to declare an | |
1392 | interoperable parameter, but we can't be sure if the param is C | |
1393 | interop or not if the user doesn't. For example, integer(4) may be | |
1394 | legal Fortran, but doesn't have meaning in C. It may interop with | |
1395 | a number of the C types, which causes a problem because the | |
1396 | compiler can't know which one. This code is almost certainly not | |
1397 | portable, and the user will get what they deserve if the C type | |
1398 | across platforms isn't always interoperable with integer(4). If | |
1399 | the user had used something like integer(c_int) or integer(c_long), | |
1400 | the compiler could have automatically handled the varying sizes | |
1401 | across platforms. */ | |
1402 | ||
60e19868 | 1403 | bool |
2564c57a | 1404 | gfc_verify_c_interop_param (gfc_symbol *sym) |
c5d33754 | 1405 | { |
1406 | int is_c_interop = 0; | |
60e19868 | 1407 | bool retval = true; |
c5d33754 | 1408 | |
1409 | /* We check implicitly typed variables in symbol.c:gfc_set_default_type(). | |
1410 | Don't repeat the checks here. */ | |
1411 | if (sym->attr.implicit_type) | |
60e19868 | 1412 | return true; |
8db94b3b | 1413 | |
c5d33754 | 1414 | /* For subroutines or functions that are passed to a BIND(C) procedure, |
1415 | they're interoperable if they're BIND(C) and their params are all | |
1416 | interoperable. */ | |
1417 | if (sym->attr.flavor == FL_PROCEDURE) | |
1418 | { | |
1419 | if (sym->attr.is_bind_c == 0) | |
1420 | { | |
bf79c656 | 1421 | gfc_error_now ("Procedure %qs at %L must have the BIND(C) " |
1422 | "attribute to be C interoperable", sym->name, | |
1423 | &(sym->declared_at)); | |
60e19868 | 1424 | return false; |
c5d33754 | 1425 | } |
1426 | else | |
1427 | { | |
1428 | if (sym->attr.is_c_interop == 1) | |
1429 | /* We've already checked this procedure; don't check it again. */ | |
60e19868 | 1430 | return true; |
c5d33754 | 1431 | else |
1432 | return verify_bind_c_sym (sym, &(sym->ts), sym->attr.in_common, | |
1433 | sym->common_block); | |
1434 | } | |
1435 | } | |
8db94b3b | 1436 | |
c5d33754 | 1437 | /* See if we've stored a reference to a procedure that owns sym. */ |
1438 | if (sym->ns != NULL && sym->ns->proc_name != NULL) | |
1439 | { | |
1440 | if (sym->ns->proc_name->attr.is_bind_c == 1) | |
1441 | { | |
60e19868 | 1442 | is_c_interop = (gfc_verify_c_interop(&(sym->ts)) ? 1 : 0); |
c5d33754 | 1443 | |
1444 | if (is_c_interop != 1) | |
1445 | { | |
1446 | /* Make personalized messages to give better feedback. */ | |
1447 | if (sym->ts.type == BT_DERIVED) | |
716da296 | 1448 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1449 | "BIND(C) procedure %qs but is not C interoperable " | |
1450 | "because derived type %qs is not C interoperable", | |
c5d33754 | 1451 | sym->name, &(sym->declared_at), |
8db94b3b | 1452 | sym->ns->proc_name->name, |
eeebe20b | 1453 | sym->ts.u.derived->name); |
2564c57a | 1454 | else if (sym->ts.type == BT_CLASS) |
716da296 | 1455 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1456 | "BIND(C) procedure %qs but is not C interoperable " | |
2564c57a | 1457 | "because it is polymorphic", |
1458 | sym->name, &(sym->declared_at), | |
1459 | sym->ns->proc_name->name); | |
bf79c656 | 1460 | else if (warn_c_binding_type) |
4166acc7 | 1461 | gfc_warning (OPT_Wc_binding_type, |
1462 | "Variable %qs at %L is a dummy argument of the " | |
1463 | "BIND(C) procedure %qs but may not be C " | |
c5d33754 | 1464 | "interoperable", |
1465 | sym->name, &(sym->declared_at), | |
1466 | sym->ns->proc_name->name); | |
1467 | } | |
e4eda3ec | 1468 | |
1469 | /* Character strings are only C interoperable if they have a | |
1470 | length of 1. */ | |
1471 | if (sym->ts.type == BT_CHARACTER) | |
1472 | { | |
eeebe20b | 1473 | gfc_charlen *cl = sym->ts.u.cl; |
e4eda3ec | 1474 | if (!cl || !cl->length || cl->length->expr_type != EXPR_CONSTANT |
1475 | || mpz_cmp_si (cl->length->value.integer, 1) != 0) | |
1476 | { | |
716da296 | 1477 | gfc_error ("Character argument %qs at %L " |
e4eda3ec | 1478 | "must be length 1 because " |
716da296 | 1479 | "procedure %qs is BIND(C)", |
e4eda3ec | 1480 | sym->name, &sym->declared_at, |
1481 | sym->ns->proc_name->name); | |
60e19868 | 1482 | retval = false; |
e4eda3ec | 1483 | } |
1484 | } | |
1485 | ||
c5d33754 | 1486 | /* We have to make sure that any param to a bind(c) routine does |
1487 | not have the allocatable, pointer, or optional attributes, | |
1488 | according to J3/04-007, section 5.1. */ | |
a435dc3a | 1489 | if (sym->attr.allocatable == 1 |
2e2156cf | 1490 | && !gfc_notify_std (GFC_STD_F2018, "Variable %qs at %L with " |
0d2b3c9c | 1491 | "ALLOCATABLE attribute in procedure %qs " |
a435dc3a | 1492 | "with BIND(C)", sym->name, |
1493 | &(sym->declared_at), | |
1494 | sym->ns->proc_name->name)) | |
1495 | retval = false; | |
1496 | ||
1497 | if (sym->attr.pointer == 1 | |
2e2156cf | 1498 | && !gfc_notify_std (GFC_STD_F2018, "Variable %qs at %L with " |
0d2b3c9c | 1499 | "POINTER attribute in procedure %qs " |
a435dc3a | 1500 | "with BIND(C)", sym->name, |
1501 | &(sym->declared_at), | |
1502 | sym->ns->proc_name->name)) | |
1503 | retval = false; | |
1504 | ||
1505 | if ((sym->attr.allocatable || sym->attr.pointer) && !sym->as) | |
c5d33754 | 1506 | { |
716da296 | 1507 | gfc_error ("Scalar variable %qs at %L with POINTER or " |
1508 | "ALLOCATABLE in procedure %qs with BIND(C) is not yet" | |
a435dc3a | 1509 | " supported", sym->name, &(sym->declared_at), |
c5d33754 | 1510 | sym->ns->proc_name->name); |
60e19868 | 1511 | retval = false; |
c5d33754 | 1512 | } |
1513 | ||
495e197c | 1514 | if (sym->attr.optional == 1 && sym->attr.value) |
c5d33754 | 1515 | { |
716da296 | 1516 | gfc_error ("Variable %qs at %L cannot have both the OPTIONAL " |
1517 | "and the VALUE attribute because procedure %qs " | |
495e197c | 1518 | "is BIND(C)", sym->name, &(sym->declared_at), |
c5d33754 | 1519 | sym->ns->proc_name->name); |
60e19868 | 1520 | retval = false; |
c5d33754 | 1521 | } |
495e197c | 1522 | else if (sym->attr.optional == 1 |
2e2156cf | 1523 | && !gfc_notify_std (GFC_STD_F2018, "Variable %qs " |
60e19868 | 1524 | "at %L with OPTIONAL attribute in " |
76e207a9 | 1525 | "procedure %qs which is BIND(C)", |
1526 | sym->name, &(sym->declared_at), | |
60e19868 | 1527 | sym->ns->proc_name->name)) |
1528 | retval = false; | |
c5d33754 | 1529 | |
1530 | /* Make sure that if it has the dimension attribute, that it is | |
9350ae4e | 1531 | either assumed size or explicit shape. Deferred shape is already |
1532 | covered by the pointer/allocatable attribute. */ | |
1533 | if (sym->as != NULL && sym->as->type == AS_ASSUMED_SHAPE | |
2e2156cf | 1534 | && !gfc_notify_std (GFC_STD_F2018, "Assumed-shape array %qs " |
60e19868 | 1535 | "at %L as dummy argument to the BIND(C) " |
2f7de6c1 | 1536 | "procedure %qs at %L", sym->name, |
76e207a9 | 1537 | &(sym->declared_at), |
1538 | sym->ns->proc_name->name, | |
60e19868 | 1539 | &(sym->ns->proc_name->declared_at))) |
1540 | retval = false; | |
c5d33754 | 1541 | } |
1542 | } | |
1543 | ||
1544 | return retval; | |
1545 | } | |
1546 | ||
1547 | ||
1de1b1a9 | 1548 | |
c5d33754 | 1549 | /* Function called by variable_decl() that adds a name to the symbol table. */ |
4ee9c684 | 1550 | |
60e19868 | 1551 | static bool |
3e715c81 | 1552 | build_sym (const char *name, gfc_charlen *cl, bool cl_deferred, |
1a9745d2 | 1553 | gfc_array_spec **as, locus *var_locus) |
4ee9c684 | 1554 | { |
1555 | symbol_attribute attr; | |
1556 | gfc_symbol *sym; | |
9b49c3cb | 1557 | int upper; |
7200bfee | 1558 | gfc_symtree *st; |
1559 | ||
1560 | /* Symbols in a submodule are host associated from the parent module or | |
1561 | submodules. Therefore, they can be overridden by declarations in the | |
1562 | submodule scope. Deal with this by attaching the existing symbol to | |
1563 | a new symtree and recycling the old symtree with a new symbol... */ | |
1564 | st = gfc_find_symtree (gfc_current_ns->sym_root, name); | |
1565 | if (st != NULL && gfc_state_stack->state == COMP_SUBMODULE | |
1566 | && st->n.sym != NULL | |
1567 | && st->n.sym->attr.host_assoc && st->n.sym->attr.used_in_submodule) | |
1568 | { | |
1569 | gfc_symtree *s = gfc_get_unique_symtree (gfc_current_ns); | |
1570 | s->n.sym = st->n.sym; | |
1571 | sym = gfc_new_symbol (name, gfc_current_ns); | |
4ee9c684 | 1572 | |
7200bfee | 1573 | |
1574 | st->n.sym = sym; | |
1575 | sym->refs++; | |
1576 | gfc_set_sym_referenced (sym); | |
1577 | } | |
1578 | /* ...Otherwise generate a new symtree and new symbol. */ | |
1579 | else if (gfc_get_symbol (name, NULL, &sym)) | |
60e19868 | 1580 | return false; |
4ee9c684 | 1581 | |
9b49c3cb | 1582 | /* Check if the name has already been defined as a type. The |
1583 | first letter of the symtree will be in upper case then. Of | |
1584 | course, this is only necessary if the upper case letter is | |
1585 | actually different. */ | |
1586 | ||
1587 | upper = TOUPPER(name[0]); | |
1588 | if (upper != name[0]) | |
1589 | { | |
1590 | char u_name[GFC_MAX_SYMBOL_LEN + 1]; | |
1591 | gfc_symtree *st; | |
9b49c3cb | 1592 | |
d8aad786 | 1593 | gcc_assert (strlen(name) <= GFC_MAX_SYMBOL_LEN); |
1594 | strcpy (u_name, name); | |
9b49c3cb | 1595 | u_name[0] = upper; |
1596 | ||
1597 | st = gfc_find_symtree (gfc_current_ns->sym_root, u_name); | |
1598 | ||
d7cd448a | 1599 | /* STRUCTURE types can alias symbol names */ |
1600 | if (st != 0 && st->n.sym->attr.flavor != FL_STRUCT) | |
9b49c3cb | 1601 | { |
1602 | gfc_error ("Symbol %qs at %C also declared as a type at %L", name, | |
1603 | &st->n.sym->declared_at); | |
1604 | return false; | |
1605 | } | |
1606 | } | |
1607 | ||
f6d0e37a | 1608 | /* Start updating the symbol table. Add basic type attribute if present. */ |
4ee9c684 | 1609 | if (current_ts.type != BT_UNKNOWN |
1a9745d2 | 1610 | && (sym->attr.implicit_type == 0 |
1611 | || !gfc_compare_types (&sym->ts, ¤t_ts)) | |
60e19868 | 1612 | && !gfc_add_type (sym, ¤t_ts, var_locus)) |
1613 | return false; | |
4ee9c684 | 1614 | |
1615 | if (sym->ts.type == BT_CHARACTER) | |
3e715c81 | 1616 | { |
1617 | sym->ts.u.cl = cl; | |
1618 | sym->ts.deferred = cl_deferred; | |
1619 | } | |
4ee9c684 | 1620 | |
1621 | /* Add dimension attribute if present. */ | |
60e19868 | 1622 | if (!gfc_set_array_spec (sym, *as, var_locus)) |
1623 | return false; | |
4ee9c684 | 1624 | *as = NULL; |
1625 | ||
1626 | /* Add attribute to symbol. The copy is so that we can reset the | |
1627 | dimension attribute. */ | |
1628 | attr = current_attr; | |
1629 | attr.dimension = 0; | |
aff518b0 | 1630 | attr.codimension = 0; |
4ee9c684 | 1631 | |
60e19868 | 1632 | if (!gfc_copy_attr (&sym->attr, &attr, var_locus)) |
1633 | return false; | |
4ee9c684 | 1634 | |
c5d33754 | 1635 | /* Finish any work that may need to be done for the binding label, |
1636 | if it's a bind(c). The bind(c) attr is found before the symbol | |
1637 | is made, and before the symbol name (for data decls), so the | |
1638 | current_ts is holding the binding label, or nothing if the | |
1639 | name= attr wasn't given. Therefore, test here if we're dealing | |
1640 | with a bind(c) and make sure the binding label is set correctly. */ | |
1641 | if (sym->attr.is_bind_c == 1) | |
1642 | { | |
7b2060ba | 1643 | if (!sym->binding_label) |
c5d33754 | 1644 | { |
825718f9 | 1645 | /* Set the binding label and verify that if a NAME= was specified |
1646 | then only one identifier was in the entity-decl-list. */ | |
76e207a9 | 1647 | if (!set_binding_label (&sym->binding_label, sym->name, |
60e19868 | 1648 | num_idents_on_line)) |
1649 | return false; | |
c5d33754 | 1650 | } |
1651 | } | |
1652 | ||
1653 | /* See if we know we're in a common block, and if it's a bind(c) | |
1654 | common then we need to make sure we're an interoperable type. */ | |
1655 | if (sym->attr.in_common == 1) | |
1656 | { | |
1657 | /* Test the common block object. */ | |
1658 | if (sym->common_block != NULL && sym->common_block->is_bind_c == 1 | |
1659 | && sym->ts.is_c_interop != 1) | |
1660 | { | |
bf79c656 | 1661 | gfc_error_now ("Variable %qs in common block %qs at %C " |
c5d33754 | 1662 | "must be declared with a C interoperable " |
bf79c656 | 1663 | "kind since common block %qs is BIND(C)", |
c5d33754 | 1664 | sym->name, sym->common_block->name, |
1665 | sym->common_block->name); | |
1666 | gfc_clear_error (); | |
1667 | } | |
1668 | } | |
1669 | ||
2457a77e | 1670 | sym->attr.implied_index = 0; |
1671 | ||
9d958d5b | 1672 | /* Use the parameter expressions for a parameterized derived type. */ |
1673 | if ((sym->ts.type == BT_DERIVED || sym->ts.type == BT_CLASS) | |
1674 | && sym->ts.u.derived->attr.pdt_type && type_param_spec_list) | |
1675 | sym->param_list = gfc_copy_actual_arglist (type_param_spec_list); | |
1676 | ||
fa102e56 | 1677 | if (sym->ts.type == BT_CLASS) |
e8393d49 | 1678 | return gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as); |
1de1b1a9 | 1679 | |
60e19868 | 1680 | return true; |
4ee9c684 | 1681 | } |
1682 | ||
1a9745d2 | 1683 | |
a270dc8e | 1684 | /* Set character constant to the given length. The constant will be padded or |
d1a39099 | 1685 | truncated. If we're inside an array constructor without a typespec, we |
1686 | additionally check that all elements have the same length; check_len -1 | |
1687 | means no checking. */ | |
a270dc8e | 1688 | |
1689 | void | |
bdfec5bf | 1690 | gfc_set_constant_character_len (gfc_charlen_t len, gfc_expr *expr, |
1691 | gfc_charlen_t check_len) | |
a270dc8e | 1692 | { |
c32f863c | 1693 | gfc_char_t *s; |
bdfec5bf | 1694 | gfc_charlen_t slen; |
a270dc8e | 1695 | |
00fff882 | 1696 | if (expr->ts.type != BT_CHARACTER) |
1697 | return; | |
6ade726e | 1698 | |
3badc59b | 1699 | if (expr->expr_type != EXPR_CONSTANT) |
1700 | { | |
1701 | gfc_error_now ("CHARACTER length must be a constant at %L", &expr->where); | |
1702 | return; | |
1703 | } | |
a270dc8e | 1704 | |
1705 | slen = expr->value.character.length; | |
1706 | if (len != slen) | |
1707 | { | |
c32f863c | 1708 | s = gfc_get_wide_string (len + 1); |
1709 | memcpy (s, expr->value.character.string, | |
1710 | MIN (len, slen) * sizeof (gfc_char_t)); | |
a270dc8e | 1711 | if (len > slen) |
c32f863c | 1712 | gfc_wide_memset (&s[slen], ' ', len - slen); |
1bfea7e8 | 1713 | |
fed21cc2 | 1714 | if (warn_character_truncation && slen > len) |
bf79c656 | 1715 | gfc_warning_now (OPT_Wcharacter_truncation, |
1716 | "CHARACTER expression at %L is being truncated " | |
bdfec5bf | 1717 | "(%ld/%ld)", &expr->where, |
1718 | (long) slen, (long) len); | |
1bfea7e8 | 1719 | |
1720 | /* Apply the standard by 'hand' otherwise it gets cleared for | |
1721 | initializers. */ | |
d1a39099 | 1722 | if (check_len != -1 && slen != check_len |
1723 | && !(gfc_option.allow_std & GFC_STD_GNU)) | |
1bfea7e8 | 1724 | gfc_error_now ("The CHARACTER elements of the array constructor " |
bdfec5bf | 1725 | "at %L must have the same length (%ld/%ld)", |
1726 | &expr->where, (long) slen, | |
1727 | (long) check_len); | |
1bfea7e8 | 1728 | |
89f528df | 1729 | s[len] = '\0'; |
434f0922 | 1730 | free (expr->value.character.string); |
a270dc8e | 1731 | expr->value.character.string = s; |
1732 | expr->value.character.length = len; | |
1733 | } | |
1734 | } | |
4ee9c684 | 1735 | |
3b6a4b41 | 1736 | |
e14bee04 | 1737 | /* Function to create and update the enumerator history |
3b6a4b41 | 1738 | using the information passed as arguments. |
e14bee04 | 1739 | Pointer "max_enum" is also updated, to point to |
1740 | enum history node containing largest initializer. | |
3b6a4b41 | 1741 | |
1742 | SYM points to the symbol node of enumerator. | |
f6d0e37a | 1743 | INIT points to its enumerator value. */ |
3b6a4b41 | 1744 | |
e14bee04 | 1745 | static void |
1a9745d2 | 1746 | create_enum_history (gfc_symbol *sym, gfc_expr *init) |
3b6a4b41 | 1747 | { |
1748 | enumerator_history *new_enum_history; | |
1749 | gcc_assert (sym != NULL && init != NULL); | |
1750 | ||
48d8ad5a | 1751 | new_enum_history = XCNEW (enumerator_history); |
3b6a4b41 | 1752 | |
1753 | new_enum_history->sym = sym; | |
1754 | new_enum_history->initializer = init; | |
1755 | new_enum_history->next = NULL; | |
1756 | ||
1757 | if (enum_history == NULL) | |
1758 | { | |
1759 | enum_history = new_enum_history; | |
1760 | max_enum = enum_history; | |
1761 | } | |
1762 | else | |
1763 | { | |
1764 | new_enum_history->next = enum_history; | |
1765 | enum_history = new_enum_history; | |
1766 | ||
e14bee04 | 1767 | if (mpz_cmp (max_enum->initializer->value.integer, |
3b6a4b41 | 1768 | new_enum_history->initializer->value.integer) < 0) |
1a9745d2 | 1769 | max_enum = new_enum_history; |
3b6a4b41 | 1770 | } |
1771 | } | |
1772 | ||
1773 | ||
e14bee04 | 1774 | /* Function to free enum kind history. */ |
3b6a4b41 | 1775 | |
e14bee04 | 1776 | void |
1a9745d2 | 1777 | gfc_free_enum_history (void) |
3b6a4b41 | 1778 | { |
e14bee04 | 1779 | enumerator_history *current = enum_history; |
1780 | enumerator_history *next; | |
3b6a4b41 | 1781 | |
1782 | while (current != NULL) | |
1783 | { | |
1784 | next = current->next; | |
434f0922 | 1785 | free (current); |
3b6a4b41 | 1786 | current = next; |
1787 | } | |
1788 | max_enum = NULL; | |
1789 | enum_history = NULL; | |
1790 | } | |
1791 | ||
1792 | ||
4ee9c684 | 1793 | /* Function called by variable_decl() that adds an initialization |
1794 | expression to a symbol. */ | |
1795 | ||
60e19868 | 1796 | static bool |
f6d0e37a | 1797 | add_init_expr_to_sym (const char *name, gfc_expr **initp, locus *var_locus) |
4ee9c684 | 1798 | { |
1799 | symbol_attribute attr; | |
1800 | gfc_symbol *sym; | |
1801 | gfc_expr *init; | |
1802 | ||
1803 | init = *initp; | |
36b0a1b0 | 1804 | if (find_special (name, &sym, false)) |
60e19868 | 1805 | return false; |
4ee9c684 | 1806 | |
1807 | attr = sym->attr; | |
1808 | ||
1809 | /* If this symbol is confirming an implicit parameter type, | |
1810 | then an initialization expression is not allowed. */ | |
1811 | if (attr.flavor == FL_PARAMETER | |
1812 | && sym->value != NULL | |
1813 | && *initp != NULL) | |
1814 | { | |
716da296 | 1815 | gfc_error ("Initializer not allowed for PARAMETER %qs at %C", |
4ee9c684 | 1816 | sym->name); |
60e19868 | 1817 | return false; |
4ee9c684 | 1818 | } |
1819 | ||
1820 | if (init == NULL) | |
1821 | { | |
1822 | /* An initializer is required for PARAMETER declarations. */ | |
1823 | if (attr.flavor == FL_PARAMETER) | |
1824 | { | |
1825 | gfc_error ("PARAMETER at %L is missing an initializer", var_locus); | |
60e19868 | 1826 | return false; |
4ee9c684 | 1827 | } |
1828 | } | |
1829 | else | |
1830 | { | |
1831 | /* If a variable appears in a DATA block, it cannot have an | |
b97f1a18 | 1832 | initializer. */ |
4ee9c684 | 1833 | if (sym->attr.data) |
1834 | { | |
716da296 | 1835 | gfc_error ("Variable %qs at %C with an initializer already " |
1a9745d2 | 1836 | "appears in a DATA statement", sym->name); |
60e19868 | 1837 | return false; |
4ee9c684 | 1838 | } |
1839 | ||
cca3db55 | 1840 | /* Check if the assignment can happen. This has to be put off |
23d075f4 | 1841 | until later for derived type variables and procedure pointers. */ |
d7cd448a | 1842 | if (!gfc_bt_struct (sym->ts.type) && !gfc_bt_struct (init->ts.type) |
1de1b1a9 | 1843 | && sym->ts.type != BT_CLASS && init->ts.type != BT_CLASS |
8db94b3b | 1844 | && !sym->attr.proc_pointer |
60e19868 | 1845 | && !gfc_check_assign_symbol (sym, NULL, init)) |
1846 | return false; | |
4ee9c684 | 1847 | |
eeebe20b | 1848 | if (sym->ts.type == BT_CHARACTER && sym->ts.u.cl |
da540712 | 1849 | && init->ts.type == BT_CHARACTER) |
a270dc8e | 1850 | { |
1851 | /* Update symbol character length according initializer. */ | |
60e19868 | 1852 | if (!gfc_check_assign_symbol (sym, NULL, init)) |
1853 | return false; | |
da540712 | 1854 | |
eeebe20b | 1855 | if (sym->ts.u.cl->length == NULL) |
a270dc8e | 1856 | { |
9f4d9f83 | 1857 | gfc_charlen_t clen; |
f6d0e37a | 1858 | /* If there are multiple CHARACTER variables declared on the |
1859 | same line, we don't want them to share the same length. */ | |
d270ce52 | 1860 | sym->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
e9c873a4 | 1861 | |
03c2a028 | 1862 | if (sym->attr.flavor == FL_PARAMETER) |
1863 | { | |
1864 | if (init->expr_type == EXPR_CONSTANT) | |
1865 | { | |
1866 | clen = init->value.character.length; | |
126387b5 | 1867 | sym->ts.u.cl->length |
9f4d9f83 | 1868 | = gfc_get_int_expr (gfc_charlen_int_kind, |
126387b5 | 1869 | NULL, clen); |
03c2a028 | 1870 | } |
1871 | else if (init->expr_type == EXPR_ARRAY) | |
1872 | { | |
fc9b0d53 | 1873 | if (init->ts.u.cl && init->ts.u.cl->length) |
cde225a2 | 1874 | { |
1875 | const gfc_expr *length = init->ts.u.cl->length; | |
1876 | if (length->expr_type != EXPR_CONSTANT) | |
1877 | { | |
1878 | gfc_error ("Cannot initialize parameter array " | |
1879 | "at %L " | |
1880 | "with variable length elements", | |
1881 | &sym->declared_at); | |
1882 | return false; | |
1883 | } | |
1884 | clen = mpz_get_si (length->value.integer); | |
1885 | } | |
9123b22a | 1886 | else if (init->value.constructor) |
1887 | { | |
1888 | gfc_constructor *c; | |
76e207a9 | 1889 | c = gfc_constructor_first (init->value.constructor); |
9123b22a | 1890 | clen = c->expr->value.character.length; |
1891 | } | |
1892 | else | |
1893 | gcc_unreachable (); | |
126387b5 | 1894 | sym->ts.u.cl->length |
9f4d9f83 | 1895 | = gfc_get_int_expr (gfc_charlen_int_kind, |
126387b5 | 1896 | NULL, clen); |
03c2a028 | 1897 | } |
eeebe20b | 1898 | else if (init->ts.u.cl && init->ts.u.cl->length) |
1899 | sym->ts.u.cl->length = | |
1900 | gfc_copy_expr (sym->value->ts.u.cl->length); | |
03c2a028 | 1901 | } |
a270dc8e | 1902 | } |
1903 | /* Update initializer character length according symbol. */ | |
eeebe20b | 1904 | else if (sym->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
a270dc8e | 1905 | { |
f8e2139b | 1906 | if (!gfc_specification_expr (sym->ts.u.cl->length)) |
1907 | return false; | |
1908 | ||
90ace78f | 1909 | int k = gfc_validate_kind (BT_INTEGER, gfc_charlen_int_kind, |
1910 | false); | |
1911 | /* resolve_charlen will complain later on if the length | |
1912 | is too large. Just skeep the initialization in that case. */ | |
1913 | if (mpz_cmp (sym->ts.u.cl->length->value.integer, | |
1914 | gfc_integer_kinds[k].huge) <= 0) | |
a270dc8e | 1915 | { |
90ace78f | 1916 | HOST_WIDE_INT len |
1917 | = gfc_mpz_get_hwi (sym->ts.u.cl->length->value.integer); | |
1918 | ||
1919 | if (init->expr_type == EXPR_CONSTANT) | |
1920 | gfc_set_constant_character_len (len, init, -1); | |
1921 | else if (init->expr_type == EXPR_ARRAY) | |
1922 | { | |
1923 | gfc_constructor *c; | |
126387b5 | 1924 | |
90ace78f | 1925 | /* Build a new charlen to prevent simplification from |
1926 | deleting the length before it is resolved. */ | |
1927 | init->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); | |
1928 | init->ts.u.cl->length | |
1929 | = gfc_copy_expr (sym->ts.u.cl->length); | |
39908fd9 | 1930 | |
90ace78f | 1931 | for (c = gfc_constructor_first (init->value.constructor); |
1932 | c; c = gfc_constructor_next (c)) | |
1933 | gfc_set_constant_character_len (len, c->expr, -1); | |
1934 | } | |
a270dc8e | 1935 | } |
1936 | } | |
1937 | } | |
1938 | ||
ae2864a8 | 1939 | /* If sym is implied-shape, set its upper bounds from init. */ |
1940 | if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension | |
1941 | && sym->as->type == AS_IMPLIED_SHAPE) | |
1942 | { | |
1943 | int dim; | |
1944 | ||
1945 | if (init->rank == 0) | |
1946 | { | |
1947 | gfc_error ("Can't initialize implied-shape array at %L" | |
1948 | " with scalar", &sym->declared_at); | |
60e19868 | 1949 | return false; |
ae2864a8 | 1950 | } |
ae2864a8 | 1951 | |
1952 | /* Shape should be present, we get an initialization expression. */ | |
1953 | gcc_assert (init->shape); | |
1954 | ||
1955 | for (dim = 0; dim < sym->as->rank; ++dim) | |
1956 | { | |
1957 | int k; | |
0c0c5469 | 1958 | gfc_expr *e, *lower; |
8db94b3b | 1959 | |
ae2864a8 | 1960 | lower = sym->as->lower[dim]; |
0c0c5469 | 1961 | |
76e207a9 | 1962 | /* If the lower bound is an array element from another |
0c0c5469 | 1963 | parameterized array, then it is marked with EXPR_VARIABLE and |
1964 | is an initialization expression. Try to reduce it. */ | |
1965 | if (lower->expr_type == EXPR_VARIABLE) | |
1966 | gfc_reduce_init_expr (lower); | |
1967 | ||
1968 | if (lower->expr_type == EXPR_CONSTANT) | |
1969 | { | |
1970 | /* All dimensions must be without upper bound. */ | |
1971 | gcc_assert (!sym->as->upper[dim]); | |
1972 | ||
1973 | k = lower->ts.kind; | |
1974 | e = gfc_get_constant_expr (BT_INTEGER, k, &sym->declared_at); | |
1975 | mpz_add (e->value.integer, lower->value.integer, | |
1976 | init->shape[dim]); | |
1977 | mpz_sub_ui (e->value.integer, e->value.integer, 1); | |
1978 | sym->as->upper[dim] = e; | |
1979 | } | |
1980 | else | |
ae2864a8 | 1981 | { |
1982 | gfc_error ("Non-constant lower bound in implied-shape" | |
1983 | " declaration at %L", &lower->where); | |
60e19868 | 1984 | return false; |
ae2864a8 | 1985 | } |
ae2864a8 | 1986 | } |
1987 | ||
1988 | sym->as->type = AS_EXPLICIT; | |
1989 | } | |
1990 | ||
c5d33754 | 1991 | /* Need to check if the expression we initialized this |
1992 | to was one of the iso_c_binding named constants. If so, | |
1993 | and we're a parameter (constant), let it be iso_c. | |
1994 | For example: | |
1995 | integer(c_int), parameter :: my_int = c_int | |
1996 | integer(my_int) :: my_int_2 | |
1997 | If we mark my_int as iso_c (since we can see it's value | |
1998 | is equal to one of the named constants), then my_int_2 | |
1999 | will be considered C interoperable. */ | |
d7cd448a | 2000 | if (sym->ts.type != BT_CHARACTER && !gfc_bt_struct (sym->ts.type)) |
c5d33754 | 2001 | { |
2002 | sym->ts.is_iso_c |= init->ts.is_iso_c; | |
2003 | sym->ts.is_c_interop |= init->ts.is_c_interop; | |
2004 | /* attr bits needed for module files. */ | |
2005 | sym->attr.is_iso_c |= init->ts.is_iso_c; | |
2006 | sym->attr.is_c_interop |= init->ts.is_c_interop; | |
2007 | if (init->ts.is_iso_c) | |
2008 | sym->ts.f90_type = init->ts.f90_type; | |
2009 | } | |
126387b5 | 2010 | |
4ee9c684 | 2011 | /* Add initializer. Make sure we keep the ranks sane. */ |
2012 | if (sym->attr.dimension && init->rank == 0) | |
7baa3fb4 | 2013 | { |
2014 | mpz_t size; | |
2015 | gfc_expr *array; | |
7baa3fb4 | 2016 | int n; |
2017 | if (sym->attr.flavor == FL_PARAMETER | |
2018 | && init->expr_type == EXPR_CONSTANT | |
60e19868 | 2019 | && spec_size (sym->as, &size) |
7baa3fb4 | 2020 | && mpz_cmp_si (size, 0) > 0) |
2021 | { | |
126387b5 | 2022 | array = gfc_get_array_expr (init->ts.type, init->ts.kind, |
2023 | &init->where); | |
7baa3fb4 | 2024 | for (n = 0; n < (int)mpz_get_si (size); n++) |
126387b5 | 2025 | gfc_constructor_append_expr (&array->value.constructor, |
2026 | n == 0 | |
2027 | ? init | |
2028 | : gfc_copy_expr (init), | |
2029 | &init->where); | |
8db94b3b | 2030 | |
7baa3fb4 | 2031 | array->shape = gfc_get_shape (sym->as->rank); |
2032 | for (n = 0; n < sym->as->rank; n++) | |
2033 | spec_dimen_size (sym->as, n, &array->shape[n]); | |
2034 | ||
2035 | init = array; | |
2036 | mpz_clear (size); | |
2037 | } | |
2038 | init->rank = sym->as->rank; | |
2039 | } | |
4ee9c684 | 2040 | |
2041 | sym->value = init; | |
3cd3c667 | 2042 | if (sym->attr.save == SAVE_NONE) |
2043 | sym->attr.save = SAVE_IMPLICIT; | |
4ee9c684 | 2044 | *initp = NULL; |
2045 | } | |
2046 | ||
60e19868 | 2047 | return true; |
4ee9c684 | 2048 | } |
2049 | ||
2050 | ||
2051 | /* Function called by variable_decl() that adds a name to a structure | |
2052 | being built. */ | |
2053 | ||
60e19868 | 2054 | static bool |
1a9745d2 | 2055 | build_struct (const char *name, gfc_charlen *cl, gfc_expr **init, |
2056 | gfc_array_spec **as) | |
4ee9c684 | 2057 | { |
d7cd448a | 2058 | gfc_state_data *s; |
4ee9c684 | 2059 | gfc_component *c; |
2060 | ||
53d2e124 | 2061 | /* F03:C438/C439. If the current symbol is of the same derived type that we're |
4ee9c684 | 2062 | constructing, it must have the pointer attribute. */ |
53d2e124 | 2063 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
eeebe20b | 2064 | && current_ts.u.derived == gfc_current_block () |
4ee9c684 | 2065 | && current_attr.pointer == 0) |
2066 | { | |
dd7553fe | 2067 | if (current_attr.allocatable |
2068 | && !gfc_notify_std(GFC_STD_F2008, "Component at %C " | |
2069 | "must have the POINTER attribute")) | |
2070 | { | |
2071 | return false; | |
2072 | } | |
2073 | else if (current_attr.allocatable == 0) | |
2074 | { | |
abfb4be5 | 2075 | gfc_error ("Component at %C must have the POINTER attribute"); |
2076 | return false; | |
2077 | } | |
4ee9c684 | 2078 | } |
abfb4be5 | 2079 | |
2080 | /* F03:C437. */ | |
2081 | if (current_ts.type == BT_CLASS | |
2082 | && !(current_attr.pointer || current_attr.allocatable)) | |
2083 | { | |
2084 | gfc_error ("Component %qs with CLASS at %C must be allocatable " | |
2085 | "or pointer", name); | |
2086 | return false; | |
dd7553fe | 2087 | } |
4ee9c684 | 2088 | |
1a9745d2 | 2089 | if (gfc_current_block ()->attr.pointer && (*as)->rank != 0) |
4ee9c684 | 2090 | { |
2091 | if ((*as)->type != AS_DEFERRED && (*as)->type != AS_EXPLICIT) | |
2092 | { | |
2093 | gfc_error ("Array component of structure at %C must have explicit " | |
2094 | "or deferred shape"); | |
60e19868 | 2095 | return false; |
4ee9c684 | 2096 | } |
2097 | } | |
2098 | ||
d7cd448a | 2099 | /* If we are in a nested union/map definition, gfc_add_component will not |
2100 | properly find repeated components because: | |
7d7125df | 2101 | (i) gfc_add_component does a flat search, where components of unions |
d7cd448a | 2102 | and maps are implicity chained so nested components may conflict. |
2103 | (ii) Unions and maps are not linked as components of their parent | |
2104 | structures until after they are parsed. | |
2105 | For (i) we use gfc_find_component which searches recursively, and for (ii) | |
2106 | we search each block directly from the parse stack until we find the top | |
2107 | level structure. */ | |
2108 | ||
2109 | s = gfc_state_stack; | |
2110 | if (s->state == COMP_UNION || s->state == COMP_MAP) | |
2111 | { | |
2112 | while (s->state == COMP_UNION || gfc_comp_struct (s->state)) | |
2113 | { | |
2114 | c = gfc_find_component (s->sym, name, true, true, NULL); | |
2115 | if (c != NULL) | |
2116 | { | |
1b7008c4 | 2117 | gfc_error_now ("Component %qs at %C already declared at %L", |
d7cd448a | 2118 | name, &c->loc); |
2119 | return false; | |
2120 | } | |
2121 | /* Break after we've searched the entire chain. */ | |
2122 | if (s->state == COMP_DERIVED || s->state == COMP_STRUCTURE) | |
2123 | break; | |
2124 | s = s->previous; | |
2125 | } | |
2126 | } | |
2127 | ||
60e19868 | 2128 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
2129 | return false; | |
4ee9c684 | 2130 | |
2131 | c->ts = current_ts; | |
eeebe20b | 2132 | if (c->ts.type == BT_CHARACTER) |
2133 | c->ts.u.cl = cl; | |
9d958d5b | 2134 | |
2135 | if (c->ts.type != BT_CLASS && c->ts.type != BT_DERIVED | |
f0efd2e8 | 2136 | && (c->ts.kind == 0 || c->ts.type == BT_CHARACTER) |
2137 | && saved_kind_expr != NULL) | |
9d958d5b | 2138 | c->kind_expr = gfc_copy_expr (saved_kind_expr); |
2139 | ||
3be2b8d5 | 2140 | c->attr = current_attr; |
4ee9c684 | 2141 | |
2142 | c->initializer = *init; | |
2143 | *init = NULL; | |
2144 | ||
2145 | c->as = *as; | |
2146 | if (c->as != NULL) | |
aff518b0 | 2147 | { |
2148 | if (c->as->corank) | |
2149 | c->attr.codimension = 1; | |
2150 | if (c->as->rank) | |
2151 | c->attr.dimension = 1; | |
2152 | } | |
4ee9c684 | 2153 | *as = NULL; |
2154 | ||
36d310d0 | 2155 | gfc_apply_init (&c->ts, &c->attr, c->initializer); |
a2f51d5f | 2156 | |
4ee9c684 | 2157 | /* Check array components. */ |
3be2b8d5 | 2158 | if (!c->attr.dimension) |
b3704193 | 2159 | goto scalar; |
4ee9c684 | 2160 | |
3be2b8d5 | 2161 | if (c->attr.pointer) |
4ee9c684 | 2162 | { |
2163 | if (c->as->type != AS_DEFERRED) | |
2164 | { | |
2294b616 | 2165 | gfc_error ("Pointer array component of structure at %C must have a " |
2166 | "deferred shape"); | |
2fa20713 | 2167 | return false; |
2294b616 | 2168 | } |
2169 | } | |
3be2b8d5 | 2170 | else if (c->attr.allocatable) |
2294b616 | 2171 | { |
2172 | if (c->as->type != AS_DEFERRED) | |
2173 | { | |
2174 | gfc_error ("Allocatable component of structure at %C must have a " | |
2175 | "deferred shape"); | |
2fa20713 | 2176 | return false; |
4ee9c684 | 2177 | } |
2178 | } | |
2179 | else | |
2180 | { | |
2181 | if (c->as->type != AS_EXPLICIT) | |
2182 | { | |
1a9745d2 | 2183 | gfc_error ("Array component of structure at %C must have an " |
2184 | "explicit shape"); | |
2fa20713 | 2185 | return false; |
4ee9c684 | 2186 | } |
2187 | } | |
2188 | ||
b3704193 | 2189 | scalar: |
2190 | if (c->ts.type == BT_CLASS) | |
2fa20713 | 2191 | return gfc_build_class_symbol (&c->ts, &c->attr, &c->as); |
431a19be | 2192 | |
9d958d5b | 2193 | if (c->attr.pdt_kind || c->attr.pdt_len) |
2194 | { | |
2195 | gfc_symbol *sym; | |
2196 | gfc_find_symbol (c->name, gfc_current_block ()->f2k_derived, | |
2197 | 0, &sym); | |
2198 | if (sym == NULL) | |
2199 | { | |
2200 | gfc_error ("Type parameter %qs at %C has no corresponding entry " | |
2201 | "in the type parameter name list at %L", | |
2202 | c->name, &gfc_current_block ()->declared_at); | |
2203 | return false; | |
2204 | } | |
2205 | sym->ts = c->ts; | |
2206 | sym->attr.pdt_kind = c->attr.pdt_kind; | |
2207 | sym->attr.pdt_len = c->attr.pdt_len; | |
2208 | if (c->initializer) | |
2209 | sym->value = gfc_copy_expr (c->initializer); | |
2210 | sym->attr.flavor = FL_VARIABLE; | |
2211 | } | |
2212 | ||
2213 | if ((c->ts.type == BT_DERIVED || c->ts.type == BT_CLASS) | |
2214 | && c->ts.u.derived && c->ts.u.derived->attr.pdt_template | |
2215 | && decl_type_param_list) | |
2216 | c->param_list = gfc_copy_actual_arglist (decl_type_param_list); | |
2217 | ||
2fa20713 | 2218 | return true; |
4ee9c684 | 2219 | } |
2220 | ||
2221 | ||
2222 | /* Match a 'NULL()', and possibly take care of some side effects. */ | |
2223 | ||
2224 | match | |
1a9745d2 | 2225 | gfc_match_null (gfc_expr **result) |
4ee9c684 | 2226 | { |
2227 | gfc_symbol *sym; | |
f9d34e9a | 2228 | match m, m2 = MATCH_NO; |
4ee9c684 | 2229 | |
f9d34e9a | 2230 | if ((m = gfc_match (" null ( )")) == MATCH_ERROR) |
2231 | return MATCH_ERROR; | |
2232 | ||
2233 | if (m == MATCH_NO) | |
2234 | { | |
2235 | locus old_loc; | |
2236 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
2237 | ||
d780a64b | 2238 | if ((m2 = gfc_match (" null (")) != MATCH_YES) |
f9d34e9a | 2239 | return m2; |
2240 | ||
2241 | old_loc = gfc_current_locus; | |
2242 | if ((m2 = gfc_match (" %n ) ", name)) == MATCH_ERROR) | |
2243 | return MATCH_ERROR; | |
2244 | if (m2 != MATCH_YES | |
2245 | && ((m2 = gfc_match (" mold = %n )", name)) == MATCH_ERROR)) | |
2246 | return MATCH_ERROR; | |
2247 | if (m2 == MATCH_NO) | |
2248 | { | |
2249 | gfc_current_locus = old_loc; | |
2250 | return MATCH_NO; | |
2251 | } | |
2252 | } | |
4ee9c684 | 2253 | |
2254 | /* The NULL symbol now has to be/become an intrinsic function. */ | |
2255 | if (gfc_get_symbol ("null", NULL, &sym)) | |
2256 | { | |
2257 | gfc_error ("NULL() initialization at %C is ambiguous"); | |
2258 | return MATCH_ERROR; | |
2259 | } | |
2260 | ||
2261 | gfc_intrinsic_symbol (sym); | |
2262 | ||
2263 | if (sym->attr.proc != PROC_INTRINSIC | |
ddf8ce2d | 2264 | && !(sym->attr.use_assoc && sym->attr.intrinsic) |
60e19868 | 2265 | && (!gfc_add_procedure(&sym->attr, PROC_INTRINSIC, sym->name, NULL) |
2266 | || !gfc_add_function (&sym->attr, sym->name, NULL))) | |
4ee9c684 | 2267 | return MATCH_ERROR; |
2268 | ||
126387b5 | 2269 | *result = gfc_get_null_expr (&gfc_current_locus); |
4ee9c684 | 2270 | |
f9d34e9a | 2271 | /* Invalid per F2008, C512. */ |
2272 | if (m2 == MATCH_YES) | |
2273 | { | |
2274 | gfc_error ("NULL() initialization at %C may not have MOLD"); | |
2275 | return MATCH_ERROR; | |
2276 | } | |
2277 | ||
4ee9c684 | 2278 | return MATCH_YES; |
2279 | } | |
2280 | ||
2281 | ||
23d075f4 | 2282 | /* Match the initialization expr for a data pointer or procedure pointer. */ |
2283 | ||
2284 | static match | |
2285 | match_pointer_init (gfc_expr **init, int procptr) | |
2286 | { | |
2287 | match m; | |
2288 | ||
d7cd448a | 2289 | if (gfc_pure (NULL) && !gfc_comp_struct (gfc_state_stack->state)) |
23d075f4 | 2290 | { |
2291 | gfc_error ("Initialization of pointer at %C is not allowed in " | |
2292 | "a PURE procedure"); | |
2293 | return MATCH_ERROR; | |
2294 | } | |
c77badf3 | 2295 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
23d075f4 | 2296 | |
df084314 | 2297 | /* Match NULL() initialization. */ |
23d075f4 | 2298 | m = gfc_match_null (init); |
2299 | if (m != MATCH_NO) | |
2300 | return m; | |
2301 | ||
2302 | /* Match non-NULL initialization. */ | |
f3efaada | 2303 | gfc_matching_ptr_assignment = !procptr; |
23d075f4 | 2304 | gfc_matching_procptr_assignment = procptr; |
2305 | m = gfc_match_rvalue (init); | |
f3efaada | 2306 | gfc_matching_ptr_assignment = 0; |
23d075f4 | 2307 | gfc_matching_procptr_assignment = 0; |
2308 | if (m == MATCH_ERROR) | |
2309 | return MATCH_ERROR; | |
2310 | else if (m == MATCH_NO) | |
2311 | { | |
2312 | gfc_error ("Error in pointer initialization at %C"); | |
2313 | return MATCH_ERROR; | |
2314 | } | |
2315 | ||
7c94d8e5 | 2316 | if (!procptr && !gfc_resolve_expr (*init)) |
2317 | return MATCH_ERROR; | |
8db94b3b | 2318 | |
60e19868 | 2319 | if (!gfc_notify_std (GFC_STD_F2008, "non-NULL pointer " |
2320 | "initialization at %C")) | |
23d075f4 | 2321 | return MATCH_ERROR; |
2322 | ||
2323 | return MATCH_YES; | |
2324 | } | |
2325 | ||
2326 | ||
60e19868 | 2327 | static bool |
f3e89339 | 2328 | check_function_name (char *name) |
2329 | { | |
2330 | /* In functions that have a RESULT variable defined, the function name always | |
2331 | refers to function calls. Therefore, the name is not allowed to appear in | |
2332 | specification statements. When checking this, be careful about | |
2333 | 'hidden' procedure pointer results ('ppr@'). */ | |
2334 | ||
2335 | if (gfc_current_state () == COMP_FUNCTION) | |
2336 | { | |
2337 | gfc_symbol *block = gfc_current_block (); | |
2338 | if (block && block->result && block->result != block | |
2339 | && strcmp (block->result->name, "ppr@") != 0 | |
2340 | && strcmp (block->name, name) == 0) | |
2341 | { | |
2c6ca8fc | 2342 | gfc_error ("RESULT variable %qs at %L prohibits FUNCTION name %qs at %C " |
2343 | "from appearing in a specification statement", | |
2344 | block->result->name, &block->result->declared_at, name); | |
60e19868 | 2345 | return false; |
f3e89339 | 2346 | } |
2347 | } | |
2348 | ||
60e19868 | 2349 | return true; |
f3e89339 | 2350 | } |
2351 | ||
2352 | ||
4ee9c684 | 2353 | /* Match a variable name with an optional initializer. When this |
2354 | subroutine is called, a variable is expected to be parsed next. | |
2355 | Depending on what is happening at the moment, updates either the | |
2356 | symbol table or the current interface. */ | |
2357 | ||
2358 | static match | |
3923b69f | 2359 | variable_decl (int elem) |
4ee9c684 | 2360 | { |
2361 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8ef2cf76 | 2362 | static unsigned int fill_id = 0; |
4ee9c684 | 2363 | gfc_expr *initializer, *char_len; |
2364 | gfc_array_spec *as; | |
b549d2a5 | 2365 | gfc_array_spec *cp_as; /* Extra copy for Cray Pointees. */ |
4ee9c684 | 2366 | gfc_charlen *cl; |
3e715c81 | 2367 | bool cl_deferred; |
4ee9c684 | 2368 | locus var_locus; |
2369 | match m; | |
60e19868 | 2370 | bool t; |
b549d2a5 | 2371 | gfc_symbol *sym; |
4ee9c684 | 2372 | |
2373 | initializer = NULL; | |
2374 | as = NULL; | |
b549d2a5 | 2375 | cp_as = NULL; |
4ee9c684 | 2376 | |
2377 | /* When we get here, we've just matched a list of attributes and | |
2378 | maybe a type and a double colon. The next thing we expect to see | |
2379 | is the name of the symbol. */ | |
8ef2cf76 | 2380 | |
2381 | /* If we are parsing a structure with legacy support, we allow the symbol | |
2382 | name to be '%FILL' which gives it an anonymous (inaccessible) name. */ | |
2383 | m = MATCH_NO; | |
2384 | gfc_gobble_whitespace (); | |
2385 | if (gfc_peek_ascii_char () == '%') | |
2386 | { | |
2387 | gfc_next_ascii_char (); | |
2388 | m = gfc_match ("fill"); | |
2389 | } | |
2390 | ||
4ee9c684 | 2391 | if (m != MATCH_YES) |
8ef2cf76 | 2392 | { |
2393 | m = gfc_match_name (name); | |
2394 | if (m != MATCH_YES) | |
2395 | goto cleanup; | |
2396 | } | |
2397 | ||
2398 | else | |
2399 | { | |
2400 | m = MATCH_ERROR; | |
2401 | if (gfc_current_state () != COMP_STRUCTURE) | |
2402 | { | |
2403 | if (flag_dec_structure) | |
2404 | gfc_error ("%qs not allowed outside STRUCTURE at %C", "%FILL"); | |
2405 | else | |
2406 | gfc_error ("%qs at %C is a DEC extension, enable with " | |
2407 | "%<-fdec-structure%>", "%FILL"); | |
2408 | goto cleanup; | |
2409 | } | |
2410 | ||
2411 | if (attr_seen) | |
2412 | { | |
2413 | gfc_error ("%qs entity cannot have attributes at %C", "%FILL"); | |
2414 | goto cleanup; | |
2415 | } | |
2416 | ||
2417 | /* %FILL components are given invalid fortran names. */ | |
2418 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "%%FILL%u", fill_id++); | |
2419 | m = MATCH_YES; | |
2420 | } | |
4ee9c684 | 2421 | |
cbb9e6aa | 2422 | var_locus = gfc_current_locus; |
4ee9c684 | 2423 | |
2424 | /* Now we could see the optional array spec. or character length. */ | |
aff518b0 | 2425 | m = gfc_match_array_spec (&as, true, true); |
eae6c6c1 | 2426 | if (m == MATCH_ERROR) |
4ee9c684 | 2427 | goto cleanup; |
3b6a4b41 | 2428 | |
4ee9c684 | 2429 | if (m == MATCH_NO) |
2430 | as = gfc_copy_array_spec (current_as); | |
9b58b4c7 | 2431 | else if (current_as |
60e19868 | 2432 | && !merge_array_spec (current_as, as, true)) |
9b58b4c7 | 2433 | { |
2434 | m = MATCH_ERROR; | |
2435 | goto cleanup; | |
2436 | } | |
4ee9c684 | 2437 | |
829d7a08 | 2438 | if (flag_cray_pointer) |
eae6c6c1 | 2439 | cp_as = gfc_copy_array_spec (as); |
2440 | ||
ae2864a8 | 2441 | /* At this point, we know for sure if the symbol is PARAMETER and can thus |
2442 | determine (and check) whether it can be implied-shape. If it | |
2443 | was parsed as assumed-size, change it because PARAMETERs can not | |
fc386590 | 2444 | be assumed-size. |
2445 | ||
2446 | An explicit-shape-array cannot appear under several conditions. | |
2447 | That check is done here as well. */ | |
ae2864a8 | 2448 | if (as) |
2449 | { | |
2450 | if (as->type == AS_IMPLIED_SHAPE && current_attr.flavor != FL_PARAMETER) | |
2451 | { | |
2452 | m = MATCH_ERROR; | |
716da296 | 2453 | gfc_error ("Non-PARAMETER symbol %qs at %L can't be implied-shape", |
ae2864a8 | 2454 | name, &var_locus); |
2455 | goto cleanup; | |
2456 | } | |
2457 | ||
2458 | if (as->type == AS_ASSUMED_SIZE && as->rank == 1 | |
2459 | && current_attr.flavor == FL_PARAMETER) | |
2460 | as->type = AS_IMPLIED_SHAPE; | |
2461 | ||
2462 | if (as->type == AS_IMPLIED_SHAPE | |
76e207a9 | 2463 | && !gfc_notify_std (GFC_STD_F2008, "Implied-shape array at %L", |
60e19868 | 2464 | &var_locus)) |
ae2864a8 | 2465 | { |
2466 | m = MATCH_ERROR; | |
2467 | goto cleanup; | |
2468 | } | |
fc386590 | 2469 | |
2470 | /* F2018:C830 (R816) An explicit-shape-spec whose bounds are not | |
2471 | constant expressions shall appear only in a subprogram, derived | |
2472 | type definition, BLOCK construct, or interface body. */ | |
2473 | if (as->type == AS_EXPLICIT | |
2474 | && gfc_current_state () != COMP_BLOCK | |
2475 | && gfc_current_state () != COMP_DERIVED | |
2476 | && gfc_current_state () != COMP_FUNCTION | |
2477 | && gfc_current_state () != COMP_INTERFACE | |
2478 | && gfc_current_state () != COMP_SUBROUTINE) | |
2479 | { | |
2480 | gfc_expr *e; | |
2481 | bool not_constant = false; | |
2482 | ||
2483 | for (int i = 0; i < as->rank; i++) | |
2484 | { | |
2485 | e = gfc_copy_expr (as->lower[i]); | |
2486 | gfc_resolve_expr (e); | |
2487 | gfc_simplify_expr (e, 0); | |
2488 | if (e && (e->expr_type != EXPR_CONSTANT)) | |
2489 | { | |
2490 | not_constant = true; | |
2491 | break; | |
2492 | } | |
2493 | gfc_free_expr (e); | |
2494 | ||
2495 | e = gfc_copy_expr (as->upper[i]); | |
2496 | gfc_resolve_expr (e); | |
2497 | gfc_simplify_expr (e, 0); | |
2498 | if (e && (e->expr_type != EXPR_CONSTANT)) | |
2499 | { | |
2500 | not_constant = true; | |
2501 | break; | |
2502 | } | |
2503 | gfc_free_expr (e); | |
2504 | } | |
2505 | ||
2506 | if (not_constant) | |
4bd908ff | 2507 | { |
fc386590 | 2508 | gfc_error ("Explicit shaped array with nonconstant bounds at %C"); |
2509 | m = MATCH_ERROR; | |
2510 | goto cleanup; | |
2511 | } | |
2512 | } | |
09ebadea | 2513 | if (as->type == AS_EXPLICIT) |
2514 | { | |
2515 | for (int i = 0; i < as->rank; i++) | |
2516 | { | |
2517 | gfc_expr *e, *n; | |
2518 | e = as->lower[i]; | |
2519 | if (e->expr_type != EXPR_CONSTANT) | |
2520 | { | |
2521 | n = gfc_copy_expr (e); | |
2522 | gfc_simplify_expr (n, 1); | |
2523 | if (n->expr_type == EXPR_CONSTANT) | |
2524 | gfc_replace_expr (e, n); | |
2525 | else | |
2526 | gfc_free_expr (n); | |
2527 | } | |
2528 | e = as->upper[i]; | |
2529 | if (e->expr_type != EXPR_CONSTANT) | |
2530 | { | |
2531 | n = gfc_copy_expr (e); | |
2532 | gfc_simplify_expr (n, 1); | |
2533 | if (n->expr_type == EXPR_CONSTANT) | |
2534 | gfc_replace_expr (e, n); | |
2535 | else | |
2536 | gfc_free_expr (n); | |
2537 | } | |
2538 | } | |
2539 | } | |
ae2864a8 | 2540 | } |
2541 | ||
4ee9c684 | 2542 | char_len = NULL; |
2543 | cl = NULL; | |
3e715c81 | 2544 | cl_deferred = false; |
4ee9c684 | 2545 | |
2546 | if (current_ts.type == BT_CHARACTER) | |
2547 | { | |
926b8757 | 2548 | switch (match_char_length (&char_len, &cl_deferred, false)) |
4ee9c684 | 2549 | { |
2550 | case MATCH_YES: | |
d270ce52 | 2551 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
4ee9c684 | 2552 | |
2553 | cl->length = char_len; | |
2554 | break; | |
2555 | ||
3923b69f | 2556 | /* Non-constant lengths need to be copied after the first |
04b61f60 | 2557 | element. Also copy assumed lengths. */ |
4ee9c684 | 2558 | case MATCH_NO: |
04b61f60 | 2559 | if (elem > 1 |
eeebe20b | 2560 | && (current_ts.u.cl->length == NULL |
2561 | || current_ts.u.cl->length->expr_type != EXPR_CONSTANT)) | |
3923b69f | 2562 | { |
d270ce52 | 2563 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
eeebe20b | 2564 | cl->length = gfc_copy_expr (current_ts.u.cl->length); |
3923b69f | 2565 | } |
2566 | else | |
eeebe20b | 2567 | cl = current_ts.u.cl; |
3923b69f | 2568 | |
3e715c81 | 2569 | cl_deferred = current_ts.deferred; |
2570 | ||
4ee9c684 | 2571 | break; |
2572 | ||
2573 | case MATCH_ERROR: | |
2574 | goto cleanup; | |
2575 | } | |
2576 | } | |
2577 | ||
4b8eb6ca | 2578 | /* The dummy arguments and result of the abreviated form of MODULE |
2579 | PROCEDUREs, used in SUBMODULES should not be redefined. */ | |
2580 | if (gfc_current_ns->proc_name | |
2581 | && gfc_current_ns->proc_name->abr_modproc_decl) | |
2582 | { | |
2583 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2584 | if (sym != NULL && (sym->attr.dummy || sym->attr.result)) | |
2585 | { | |
2586 | m = MATCH_ERROR; | |
2f7de6c1 | 2587 | gfc_error ("%qs at %C is a redefinition of the declaration " |
4b8eb6ca | 2588 | "in the corresponding interface for MODULE " |
2f7de6c1 | 2589 | "PROCEDURE %qs", sym->name, |
4b8eb6ca | 2590 | gfc_current_ns->proc_name->name); |
2591 | goto cleanup; | |
2592 | } | |
2593 | } | |
2594 | ||
8ef2cf76 | 2595 | /* %FILL components may not have initializers. */ |
ea9e8242 | 2596 | if (gfc_str_startswith (name, "%FILL") && gfc_match_eos () != MATCH_YES) |
8ef2cf76 | 2597 | { |
2598 | gfc_error ("%qs entity cannot have an initializer at %C", "%FILL"); | |
2599 | m = MATCH_ERROR; | |
2600 | goto cleanup; | |
2601 | } | |
2602 | ||
b549d2a5 | 2603 | /* If this symbol has already shown up in a Cray Pointer declaration, |
322680b5 | 2604 | and this is not a component declaration, |
f6d0e37a | 2605 | then we want to set the type & bail out. */ |
d7cd448a | 2606 | if (flag_cray_pointer && !gfc_comp_struct (gfc_current_state ())) |
b549d2a5 | 2607 | { |
2608 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2609 | if (sym != NULL && sym->attr.cray_pointee) | |
2610 | { | |
b549d2a5 | 2611 | m = MATCH_YES; |
4bd908ff | 2612 | if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
2613 | { | |
2614 | m = MATCH_ERROR; | |
2615 | goto cleanup; | |
2616 | } | |
8db94b3b | 2617 | |
b549d2a5 | 2618 | /* Check to see if we have an array specification. */ |
2619 | if (cp_as != NULL) | |
2620 | { | |
2621 | if (sym->as != NULL) | |
2622 | { | |
7698a624 | 2623 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
b549d2a5 | 2624 | gfc_free_array_spec (cp_as); |
2625 | m = MATCH_ERROR; | |
2626 | goto cleanup; | |
2627 | } | |
2628 | else | |
2629 | { | |
60e19868 | 2630 | if (!gfc_set_array_spec (sym, cp_as, &var_locus)) |
b549d2a5 | 2631 | gfc_internal_error ("Couldn't set pointee array spec."); |
e14bee04 | 2632 | |
b549d2a5 | 2633 | /* Fix the array spec. */ |
e14bee04 | 2634 | m = gfc_mod_pointee_as (sym->as); |
b549d2a5 | 2635 | if (m == MATCH_ERROR) |
2636 | goto cleanup; | |
2637 | } | |
e14bee04 | 2638 | } |
b549d2a5 | 2639 | goto cleanup; |
2640 | } | |
2641 | else | |
2642 | { | |
2643 | gfc_free_array_spec (cp_as); | |
2644 | } | |
2645 | } | |
e14bee04 | 2646 | |
1e057e9b | 2647 | /* Procedure pointer as function result. */ |
2648 | if (gfc_current_state () == COMP_FUNCTION | |
2649 | && strcmp ("ppr@", gfc_current_block ()->name) == 0 | |
2650 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) == 0) | |
2651 | strcpy (name, "ppr@"); | |
2652 | ||
2653 | if (gfc_current_state () == COMP_FUNCTION | |
2654 | && strcmp (name, gfc_current_block ()->name) == 0 | |
2655 | && gfc_current_block ()->result | |
2656 | && strcmp ("ppr@", gfc_current_block ()->result->name) == 0) | |
2657 | strcpy (name, "ppr@"); | |
e14bee04 | 2658 | |
4ee9c684 | 2659 | /* OK, we've successfully matched the declaration. Now put the |
2660 | symbol in the current namespace, because it might be used in the | |
fe06c0d5 | 2661 | optional initialization expression for this symbol, e.g. this is |
4ee9c684 | 2662 | perfectly legal: |
2663 | ||
2664 | integer, parameter :: i = huge(i) | |
2665 | ||
2666 | This is only true for parameters or variables of a basic type. | |
2667 | For components of derived types, it is not true, so we don't | |
2668 | create a symbol for those yet. If we fail to create the symbol, | |
2669 | bail out. */ | |
d7cd448a | 2670 | if (!gfc_comp_struct (gfc_current_state ()) |
60e19868 | 2671 | && !build_sym (name, cl, cl_deferred, &as, &var_locus)) |
4ee9c684 | 2672 | { |
b8a51d79 | 2673 | m = MATCH_ERROR; |
2674 | goto cleanup; | |
2675 | } | |
2676 | ||
60e19868 | 2677 | if (!check_function_name (name)) |
4ee9c684 | 2678 | { |
4ee9c684 | 2679 | m = MATCH_ERROR; |
2680 | goto cleanup; | |
2681 | } | |
2682 | ||
b4f45d02 | 2683 | /* We allow old-style initializations of the form |
2684 | integer i /2/, j(4) /3*3, 1/ | |
2685 | (if no colon has been seen). These are different from data | |
2686 | statements in that initializers are only allowed to apply to the | |
2687 | variable immediately preceding, i.e. | |
2688 | integer i, j /1, 2/ | |
2689 | is not allowed. Therefore we have to do some work manually, that | |
cca3db55 | 2690 | could otherwise be left to the matchers for DATA statements. */ |
b4f45d02 | 2691 | |
2692 | if (!colon_seen && gfc_match (" /") == MATCH_YES) | |
2693 | { | |
60e19868 | 2694 | if (!gfc_notify_std (GFC_STD_GNU, "Old-style " |
2695 | "initialization at %C")) | |
b4f45d02 | 2696 | return MATCH_ERROR; |
d7cd448a | 2697 | |
2698 | /* Allow old style initializations for components of STRUCTUREs and MAPs | |
2699 | but not components of derived types. */ | |
d57a1422 | 2700 | else if (gfc_current_state () == COMP_DERIVED) |
2701 | { | |
2702 | gfc_error ("Invalid old style initialization for derived type " | |
2703 | "component at %C"); | |
2704 | m = MATCH_ERROR; | |
2705 | goto cleanup; | |
2706 | } | |
8db94b3b | 2707 | |
d7cd448a | 2708 | /* For structure components, read the initializer as a special |
2709 | expression and let the rest of this function apply the initializer | |
2710 | as usual. */ | |
2711 | else if (gfc_comp_struct (gfc_current_state ())) | |
2712 | { | |
2713 | m = match_clist_expr (&initializer, ¤t_ts, as); | |
2714 | if (m == MATCH_NO) | |
2715 | gfc_error ("Syntax error in old style initialization of %s at %C", | |
2716 | name); | |
2717 | if (m != MATCH_YES) | |
2718 | goto cleanup; | |
2719 | } | |
2720 | ||
2721 | /* Otherwise we treat the old style initialization just like a | |
2722 | DATA declaration for the current variable. */ | |
2723 | else | |
2724 | return match_old_style_init (name); | |
b4f45d02 | 2725 | } |
2726 | ||
4ee9c684 | 2727 | /* The double colon must be present in order to have initializers. |
2728 | Otherwise the statement is ambiguous with an assignment statement. */ | |
2729 | if (colon_seen) | |
2730 | { | |
2731 | if (gfc_match (" =>") == MATCH_YES) | |
2732 | { | |
4ee9c684 | 2733 | if (!current_attr.pointer) |
2734 | { | |
2735 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
2736 | m = MATCH_ERROR; | |
2737 | goto cleanup; | |
2738 | } | |
2739 | ||
23d075f4 | 2740 | m = match_pointer_init (&initializer, 0); |
4ee9c684 | 2741 | if (m != MATCH_YES) |
2742 | goto cleanup; | |
4ee9c684 | 2743 | } |
2744 | else if (gfc_match_char ('=') == MATCH_YES) | |
2745 | { | |
2746 | if (current_attr.pointer) | |
2747 | { | |
0d2b3c9c | 2748 | gfc_error ("Pointer initialization at %C requires %<=>%>, " |
2749 | "not %<=%>"); | |
4ee9c684 | 2750 | m = MATCH_ERROR; |
2751 | goto cleanup; | |
2752 | } | |
2753 | ||
2754 | m = gfc_match_init_expr (&initializer); | |
2755 | if (m == MATCH_NO) | |
2756 | { | |
2757 | gfc_error ("Expected an initialization expression at %C"); | |
2758 | m = MATCH_ERROR; | |
2759 | } | |
2760 | ||
b3a420c5 | 2761 | if (current_attr.flavor != FL_PARAMETER && gfc_pure (NULL) |
d7cd448a | 2762 | && !gfc_comp_struct (gfc_state_stack->state)) |
4ee9c684 | 2763 | { |
1a9745d2 | 2764 | gfc_error ("Initialization of variable at %C is not allowed in " |
2765 | "a PURE procedure"); | |
4ee9c684 | 2766 | m = MATCH_ERROR; |
2767 | } | |
2768 | ||
c77badf3 | 2769 | if (current_attr.flavor != FL_PARAMETER |
d7cd448a | 2770 | && !gfc_comp_struct (gfc_state_stack->state)) |
c77badf3 | 2771 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
2772 | ||
4ee9c684 | 2773 | if (m != MATCH_YES) |
2774 | goto cleanup; | |
2775 | } | |
8ffad0f9 | 2776 | } |
2777 | ||
2294b616 | 2778 | if (initializer != NULL && current_attr.allocatable |
d7cd448a | 2779 | && gfc_comp_struct (gfc_current_state ())) |
2294b616 | 2780 | { |
1a9745d2 | 2781 | gfc_error ("Initialization of allocatable component at %C is not " |
2782 | "allowed"); | |
2294b616 | 2783 | m = MATCH_ERROR; |
2784 | goto cleanup; | |
2785 | } | |
2786 | ||
87a0366f | 2787 | if (gfc_current_state () == COMP_DERIVED |
2788 | && gfc_current_block ()->attr.pdt_template) | |
2789 | { | |
2790 | gfc_symbol *param; | |
2791 | gfc_find_symbol (name, gfc_current_block ()->f2k_derived, | |
2792 | 0, ¶m); | |
2793 | if (!param && (current_attr.pdt_kind || current_attr.pdt_len)) | |
2794 | { | |
2795 | gfc_error ("The component with KIND or LEN attribute at %C does not " | |
2796 | "not appear in the type parameter list at %L", | |
2797 | &gfc_current_block ()->declared_at); | |
2798 | m = MATCH_ERROR; | |
2799 | goto cleanup; | |
2800 | } | |
2801 | else if (param && !(current_attr.pdt_kind || current_attr.pdt_len)) | |
2802 | { | |
2803 | gfc_error ("The component at %C that appears in the type parameter " | |
2804 | "list at %L has neither the KIND nor LEN attribute", | |
2805 | &gfc_current_block ()->declared_at); | |
2806 | m = MATCH_ERROR; | |
2807 | goto cleanup; | |
2808 | } | |
2809 | else if (as && (current_attr.pdt_kind || current_attr.pdt_len)) | |
2810 | { | |
2811 | gfc_error ("The component at %C which is a type parameter must be " | |
2812 | "a scalar"); | |
2813 | m = MATCH_ERROR; | |
2814 | goto cleanup; | |
2815 | } | |
2816 | else if (param && initializer) | |
2817 | param->value = gfc_copy_expr (initializer); | |
2818 | } | |
2819 | ||
2c4e6da2 | 2820 | /* Before adding a possible initilizer, do a simple check for compatibility |
9737f088 | 2821 | of lhs and rhs types. Assigning a REAL value to a derived type is not a |
2c4e6da2 | 2822 | good thing. */ |
2823 | if (current_ts.type == BT_DERIVED && initializer | |
2824 | && (gfc_numeric_ts (&initializer->ts) | |
2825 | || initializer->ts.type == BT_LOGICAL | |
2826 | || initializer->ts.type == BT_CHARACTER)) | |
2827 | { | |
9737f088 | 2828 | gfc_error ("Incompatible initialization between a derived type " |
2c4e6da2 | 2829 | "entity and an entity with %qs type at %C", |
2830 | gfc_typename (&initializer->ts)); | |
2831 | m = MATCH_ERROR; | |
2832 | goto cleanup; | |
2833 | } | |
2834 | ||
2835 | ||
d9b3f26b | 2836 | /* Add the initializer. Note that it is fine if initializer is |
4ee9c684 | 2837 | NULL here, because we sometimes also need to check if a |
2838 | declaration *must* have an initialization expression. */ | |
d7cd448a | 2839 | if (!gfc_comp_struct (gfc_current_state ())) |
4ee9c684 | 2840 | t = add_init_expr_to_sym (name, &initializer, &var_locus); |
2841 | else | |
d9b3f26b | 2842 | { |
2294b616 | 2843 | if (current_ts.type == BT_DERIVED |
1a9745d2 | 2844 | && !current_attr.pointer && !initializer) |
d9b3f26b | 2845 | initializer = gfc_default_initializer (¤t_ts); |
2846 | t = build_struct (name, cl, &initializer, &as); | |
d7cd448a | 2847 | |
2848 | /* If we match a nested structure definition we expect to see the | |
2849 | * body even if the variable declarations blow up, so we need to keep | |
2850 | * the structure declaration around. */ | |
2851 | if (gfc_new_block && gfc_new_block->attr.flavor == FL_STRUCT) | |
2852 | gfc_commit_symbol (gfc_new_block); | |
d9b3f26b | 2853 | } |
4ee9c684 | 2854 | |
60e19868 | 2855 | m = (t) ? MATCH_YES : MATCH_ERROR; |
4ee9c684 | 2856 | |
2857 | cleanup: | |
2858 | /* Free stuff up and return. */ | |
2859 | gfc_free_expr (initializer); | |
2860 | gfc_free_array_spec (as); | |
2861 | ||
2862 | return m; | |
2863 | } | |
2864 | ||
2865 | ||
d10f89ee | 2866 | /* Match an extended-f77 "TYPESPEC*bytesize"-style kind specification. |
2867 | This assumes that the byte size is equal to the kind number for | |
2868 | non-COMPLEX types, and equal to twice the kind number for COMPLEX. */ | |
4ee9c684 | 2869 | |
2870 | match | |
1a9745d2 | 2871 | gfc_match_old_kind_spec (gfc_typespec *ts) |
4ee9c684 | 2872 | { |
2873 | match m; | |
3bd3b616 | 2874 | int original_kind; |
4ee9c684 | 2875 | |
2876 | if (gfc_match_char ('*') != MATCH_YES) | |
2877 | return MATCH_NO; | |
2878 | ||
3bd3b616 | 2879 | m = gfc_match_small_literal_int (&ts->kind, NULL); |
4ee9c684 | 2880 | if (m != MATCH_YES) |
2881 | return MATCH_ERROR; | |
2882 | ||
b118a35b | 2883 | original_kind = ts->kind; |
2884 | ||
4ee9c684 | 2885 | /* Massage the kind numbers for complex types. */ |
b118a35b | 2886 | if (ts->type == BT_COMPLEX) |
2887 | { | |
2888 | if (ts->kind % 2) | |
1a9745d2 | 2889 | { |
2890 | gfc_error ("Old-style type declaration %s*%d not supported at %C", | |
2891 | gfc_basic_typename (ts->type), original_kind); | |
2892 | return MATCH_ERROR; | |
2893 | } | |
b118a35b | 2894 | ts->kind /= 2; |
2d76519f | 2895 | |
2896 | } | |
2897 | ||
eb106faf | 2898 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
2d76519f | 2899 | ts->kind = 8; |
2900 | ||
2901 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2902 | { | |
2903 | if (ts->kind == 4) | |
2904 | { | |
eb106faf | 2905 | if (flag_real4_kind == 8) |
2d76519f | 2906 | ts->kind = 8; |
eb106faf | 2907 | if (flag_real4_kind == 10) |
2d76519f | 2908 | ts->kind = 10; |
eb106faf | 2909 | if (flag_real4_kind == 16) |
2d76519f | 2910 | ts->kind = 16; |
2911 | } | |
2912 | ||
2913 | if (ts->kind == 8) | |
2914 | { | |
eb106faf | 2915 | if (flag_real8_kind == 4) |
2d76519f | 2916 | ts->kind = 4; |
eb106faf | 2917 | if (flag_real8_kind == 10) |
2d76519f | 2918 | ts->kind = 10; |
eb106faf | 2919 | if (flag_real8_kind == 16) |
2d76519f | 2920 | ts->kind = 16; |
2921 | } | |
b118a35b | 2922 | } |
4ee9c684 | 2923 | |
f2d4ef3b | 2924 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
4ee9c684 | 2925 | { |
b118a35b | 2926 | gfc_error ("Old-style type declaration %s*%d not supported at %C", |
1a9745d2 | 2927 | gfc_basic_typename (ts->type), original_kind); |
4ee9c684 | 2928 | return MATCH_ERROR; |
2929 | } | |
2930 | ||
76e207a9 | 2931 | if (!gfc_notify_std (GFC_STD_GNU, |
2932 | "Nonstandard type declaration %s*%d at %C", | |
60e19868 | 2933 | gfc_basic_typename(ts->type), original_kind)) |
be7f01a1 | 2934 | return MATCH_ERROR; |
2935 | ||
4ee9c684 | 2936 | return MATCH_YES; |
2937 | } | |
2938 | ||
2939 | ||
2940 | /* Match a kind specification. Since kinds are generally optional, we | |
2941 | usually return MATCH_NO if something goes wrong. If a "kind=" | |
2942 | string is found, then we know we have an error. */ | |
2943 | ||
2944 | match | |
67a51c8e | 2945 | gfc_match_kind_spec (gfc_typespec *ts, bool kind_expr_only) |
4ee9c684 | 2946 | { |
67a51c8e | 2947 | locus where, loc; |
4ee9c684 | 2948 | gfc_expr *e; |
2949 | match m, n; | |
c632ff3d | 2950 | char c; |
4ee9c684 | 2951 | |
2952 | m = MATCH_NO; | |
67a51c8e | 2953 | n = MATCH_YES; |
4ee9c684 | 2954 | e = NULL; |
9d958d5b | 2955 | saved_kind_expr = NULL; |
4ee9c684 | 2956 | |
67a51c8e | 2957 | where = loc = gfc_current_locus; |
2958 | ||
2959 | if (kind_expr_only) | |
2960 | goto kind_expr; | |
4ee9c684 | 2961 | |
2962 | if (gfc_match_char ('(') == MATCH_NO) | |
2963 | return MATCH_NO; | |
2964 | ||
2965 | /* Also gobbles optional text. */ | |
2966 | if (gfc_match (" kind = ") == MATCH_YES) | |
2967 | m = MATCH_ERROR; | |
2968 | ||
67a51c8e | 2969 | loc = gfc_current_locus; |
2970 | ||
2971 | kind_expr: | |
9d958d5b | 2972 | |
4ee9c684 | 2973 | n = gfc_match_init_expr (&e); |
67a51c8e | 2974 | |
9d958d5b | 2975 | if (gfc_derived_parameter_expr (e)) |
2976 | { | |
2977 | ts->kind = 0; | |
2978 | saved_kind_expr = gfc_copy_expr (e); | |
2979 | goto close_brackets; | |
2980 | } | |
2981 | ||
4ee9c684 | 2982 | if (n != MATCH_YES) |
67a51c8e | 2983 | { |
077932f9 | 2984 | if (gfc_matching_function) |
67a51c8e | 2985 | { |
8db94b3b | 2986 | /* The function kind expression might include use associated or |
077932f9 | 2987 | imported parameters and try again after the specification |
2988 | expressions..... */ | |
67a51c8e | 2989 | if (gfc_match_char (')') != MATCH_YES) |
2990 | { | |
2991 | gfc_error ("Missing right parenthesis at %C"); | |
2992 | m = MATCH_ERROR; | |
2993 | goto no_match; | |
2994 | } | |
2995 | ||
2996 | gfc_free_expr (e); | |
67a51c8e | 2997 | gfc_undo_symbols (); |
2998 | return MATCH_YES; | |
2999 | } | |
3000 | else | |
3001 | { | |
3002 | /* ....or else, the match is real. */ | |
3003 | if (n == MATCH_NO) | |
3004 | gfc_error ("Expected initialization expression at %C"); | |
3005 | if (n != MATCH_YES) | |
3006 | return MATCH_ERROR; | |
3007 | } | |
3008 | } | |
4ee9c684 | 3009 | |
3010 | if (e->rank != 0) | |
3011 | { | |
3012 | gfc_error ("Expected scalar initialization expression at %C"); | |
3013 | m = MATCH_ERROR; | |
3014 | goto no_match; | |
3015 | } | |
3016 | ||
dc326dc0 | 3017 | if (gfc_extract_int (e, &ts->kind, 1)) |
4ee9c684 | 3018 | { |
4ee9c684 | 3019 | m = MATCH_ERROR; |
3020 | goto no_match; | |
3021 | } | |
3022 | ||
c5d33754 | 3023 | /* Before throwing away the expression, let's see if we had a |
3024 | C interoperable kind (and store the fact). */ | |
3025 | if (e->ts.is_c_interop == 1) | |
3026 | { | |
df084314 | 3027 | /* Mark this as C interoperable if being declared with one |
c5d33754 | 3028 | of the named constants from iso_c_binding. */ |
3029 | ts->is_c_interop = e->ts.is_iso_c; | |
3030 | ts->f90_type = e->ts.f90_type; | |
41084313 | 3031 | if (e->symtree) |
3032 | ts->interop_kind = e->symtree->n.sym; | |
c5d33754 | 3033 | } |
8db94b3b | 3034 | |
4ee9c684 | 3035 | gfc_free_expr (e); |
3036 | e = NULL; | |
3037 | ||
c5d33754 | 3038 | /* Ignore errors to this point, if we've gotten here. This means |
3039 | we ignore the m=MATCH_ERROR from above. */ | |
f2d4ef3b | 3040 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
4ee9c684 | 3041 | { |
3042 | gfc_error ("Kind %d not supported for type %s at %C", ts->kind, | |
3043 | gfc_basic_typename (ts->type)); | |
c632ff3d | 3044 | gfc_current_locus = where; |
3045 | return MATCH_ERROR; | |
4ee9c684 | 3046 | } |
c632ff3d | 3047 | |
209d3778 | 3048 | /* Warn if, e.g., c_int is used for a REAL variable, but not |
3049 | if, e.g., c_double is used for COMPLEX as the standard | |
3050 | explicitly says that the kind type parameter for complex and real | |
3051 | variable is the same, i.e. c_float == c_float_complex. */ | |
3052 | if (ts->f90_type != BT_UNKNOWN && ts->f90_type != ts->type | |
3053 | && !((ts->f90_type == BT_REAL && ts->type == BT_COMPLEX) | |
3054 | || (ts->f90_type == BT_COMPLEX && ts->type == BT_REAL))) | |
6f521718 | 3055 | gfc_warning_now (0, "C kind type parameter is for type %s but type at %L " |
ded233a6 | 3056 | "is %s", gfc_basic_typename (ts->f90_type), &where, |
3057 | gfc_basic_typename (ts->type)); | |
209d3778 | 3058 | |
9d958d5b | 3059 | close_brackets: |
3060 | ||
c632ff3d | 3061 | gfc_gobble_whitespace (); |
e0be6f02 | 3062 | if ((c = gfc_next_ascii_char ()) != ')' |
3063 | && (ts->type != BT_CHARACTER || c != ',')) | |
4ee9c684 | 3064 | { |
c632ff3d | 3065 | if (ts->type == BT_CHARACTER) |
3066 | gfc_error ("Missing right parenthesis or comma at %C"); | |
3067 | else | |
3068 | gfc_error ("Missing right parenthesis at %C"); | |
67a51c8e | 3069 | m = MATCH_ERROR; |
4ee9c684 | 3070 | } |
c5d33754 | 3071 | else |
3072 | /* All tests passed. */ | |
3073 | m = MATCH_YES; | |
4ee9c684 | 3074 | |
c5d33754 | 3075 | if(m == MATCH_ERROR) |
3076 | gfc_current_locus = where; | |
2d76519f | 3077 | |
eb106faf | 3078 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
2d76519f | 3079 | ts->kind = 8; |
3080 | ||
3081 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
3082 | { | |
3083 | if (ts->kind == 4) | |
3084 | { | |
eb106faf | 3085 | if (flag_real4_kind == 8) |
2d76519f | 3086 | ts->kind = 8; |
eb106faf | 3087 | if (flag_real4_kind == 10) |
2d76519f | 3088 | ts->kind = 10; |
eb106faf | 3089 | if (flag_real4_kind == 16) |
2d76519f | 3090 | ts->kind = 16; |
3091 | } | |
3092 | ||
3093 | if (ts->kind == 8) | |
3094 | { | |
eb106faf | 3095 | if (flag_real8_kind == 4) |
2d76519f | 3096 | ts->kind = 4; |
eb106faf | 3097 | if (flag_real8_kind == 10) |
2d76519f | 3098 | ts->kind = 10; |
eb106faf | 3099 | if (flag_real8_kind == 16) |
2d76519f | 3100 | ts->kind = 16; |
3101 | } | |
3102 | } | |
3103 | ||
c5d33754 | 3104 | /* Return what we know from the test(s). */ |
3105 | return m; | |
4ee9c684 | 3106 | |
3107 | no_match: | |
3108 | gfc_free_expr (e); | |
cbb9e6aa | 3109 | gfc_current_locus = where; |
4ee9c684 | 3110 | return m; |
3111 | } | |
3112 | ||
3113 | ||
33399208 | 3114 | static match |
3115 | match_char_kind (int * kind, int * is_iso_c) | |
3116 | { | |
3117 | locus where; | |
3118 | gfc_expr *e; | |
3119 | match m, n; | |
dc326dc0 | 3120 | bool fail; |
33399208 | 3121 | |
3122 | m = MATCH_NO; | |
3123 | e = NULL; | |
3124 | where = gfc_current_locus; | |
3125 | ||
3126 | n = gfc_match_init_expr (&e); | |
c632ff3d | 3127 | |
077932f9 | 3128 | if (n != MATCH_YES && gfc_matching_function) |
c632ff3d | 3129 | { |
077932f9 | 3130 | /* The expression might include use-associated or imported |
8db94b3b | 3131 | parameters and try again after the specification |
077932f9 | 3132 | expressions. */ |
c632ff3d | 3133 | gfc_free_expr (e); |
c632ff3d | 3134 | gfc_undo_symbols (); |
3135 | return MATCH_YES; | |
3136 | } | |
3137 | ||
33399208 | 3138 | if (n == MATCH_NO) |
3139 | gfc_error ("Expected initialization expression at %C"); | |
3140 | if (n != MATCH_YES) | |
3141 | return MATCH_ERROR; | |
3142 | ||
3143 | if (e->rank != 0) | |
3144 | { | |
3145 | gfc_error ("Expected scalar initialization expression at %C"); | |
3146 | m = MATCH_ERROR; | |
3147 | goto no_match; | |
3148 | } | |
3149 | ||
9f96fdfe | 3150 | if (gfc_derived_parameter_expr (e)) |
3151 | { | |
3152 | saved_kind_expr = e; | |
3153 | *kind = 0; | |
3154 | return MATCH_YES; | |
3155 | } | |
3156 | ||
dc326dc0 | 3157 | fail = gfc_extract_int (e, kind, 1); |
33399208 | 3158 | *is_iso_c = e->ts.is_iso_c; |
dc326dc0 | 3159 | if (fail) |
33399208 | 3160 | { |
33399208 | 3161 | m = MATCH_ERROR; |
3162 | goto no_match; | |
3163 | } | |
3164 | ||
3165 | gfc_free_expr (e); | |
3166 | ||
3167 | /* Ignore errors to this point, if we've gotten here. This means | |
3168 | we ignore the m=MATCH_ERROR from above. */ | |
3169 | if (gfc_validate_kind (BT_CHARACTER, *kind, true) < 0) | |
3170 | { | |
3171 | gfc_error ("Kind %d is not supported for CHARACTER at %C", *kind); | |
3172 | m = MATCH_ERROR; | |
3173 | } | |
3174 | else | |
3175 | /* All tests passed. */ | |
3176 | m = MATCH_YES; | |
3177 | ||
3178 | if (m == MATCH_ERROR) | |
3179 | gfc_current_locus = where; | |
8db94b3b | 3180 | |
33399208 | 3181 | /* Return what we know from the test(s). */ |
3182 | return m; | |
3183 | ||
3184 | no_match: | |
3185 | gfc_free_expr (e); | |
3186 | gfc_current_locus = where; | |
3187 | return m; | |
3188 | } | |
3189 | ||
10f5dcc0 | 3190 | |
4ee9c684 | 3191 | /* Match the various kind/length specifications in a CHARACTER |
3192 | declaration. We don't return MATCH_NO. */ | |
3193 | ||
10f5dcc0 | 3194 | match |
3195 | gfc_match_char_spec (gfc_typespec *ts) | |
4ee9c684 | 3196 | { |
33399208 | 3197 | int kind, seen_length, is_iso_c; |
4ee9c684 | 3198 | gfc_charlen *cl; |
3199 | gfc_expr *len; | |
3200 | match m; | |
3e715c81 | 3201 | bool deferred; |
33399208 | 3202 | |
4ee9c684 | 3203 | len = NULL; |
3204 | seen_length = 0; | |
33399208 | 3205 | kind = 0; |
3206 | is_iso_c = 0; | |
3e715c81 | 3207 | deferred = false; |
4ee9c684 | 3208 | |
3209 | /* Try the old-style specification first. */ | |
3210 | old_char_selector = 0; | |
3211 | ||
926b8757 | 3212 | m = match_char_length (&len, &deferred, true); |
4ee9c684 | 3213 | if (m != MATCH_NO) |
3214 | { | |
3215 | if (m == MATCH_YES) | |
3216 | old_char_selector = 1; | |
3217 | seen_length = 1; | |
3218 | goto done; | |
3219 | } | |
3220 | ||
3221 | m = gfc_match_char ('('); | |
3222 | if (m != MATCH_YES) | |
3223 | { | |
c5d33754 | 3224 | m = MATCH_YES; /* Character without length is a single char. */ |
4ee9c684 | 3225 | goto done; |
3226 | } | |
3227 | ||
c5d33754 | 3228 | /* Try the weird case: ( KIND = <int> [ , LEN = <len-param> ] ). */ |
4ee9c684 | 3229 | if (gfc_match (" kind =") == MATCH_YES) |
3230 | { | |
33399208 | 3231 | m = match_char_kind (&kind, &is_iso_c); |
8db94b3b | 3232 | |
4ee9c684 | 3233 | if (m == MATCH_ERROR) |
3234 | goto done; | |
3235 | if (m == MATCH_NO) | |
3236 | goto syntax; | |
3237 | ||
3238 | if (gfc_match (" , len =") == MATCH_NO) | |
3239 | goto rparen; | |
3240 | ||
3e715c81 | 3241 | m = char_len_param_value (&len, &deferred); |
4ee9c684 | 3242 | if (m == MATCH_NO) |
3243 | goto syntax; | |
3244 | if (m == MATCH_ERROR) | |
3245 | goto done; | |
3246 | seen_length = 1; | |
3247 | ||
3248 | goto rparen; | |
3249 | } | |
3250 | ||
f6d0e37a | 3251 | /* Try to match "LEN = <len-param>" or "LEN = <len-param>, KIND = <int>". */ |
4ee9c684 | 3252 | if (gfc_match (" len =") == MATCH_YES) |
3253 | { | |
3e715c81 | 3254 | m = char_len_param_value (&len, &deferred); |
4ee9c684 | 3255 | if (m == MATCH_NO) |
3256 | goto syntax; | |
3257 | if (m == MATCH_ERROR) | |
3258 | goto done; | |
3259 | seen_length = 1; | |
3260 | ||
3261 | if (gfc_match_char (')') == MATCH_YES) | |
3262 | goto done; | |
3263 | ||
3264 | if (gfc_match (" , kind =") != MATCH_YES) | |
3265 | goto syntax; | |
3266 | ||
33399208 | 3267 | if (match_char_kind (&kind, &is_iso_c) == MATCH_ERROR) |
3268 | goto done; | |
4ee9c684 | 3269 | |
3270 | goto rparen; | |
3271 | } | |
3272 | ||
f6d0e37a | 3273 | /* Try to match ( <len-param> ) or ( <len-param> , [ KIND = ] <int> ). */ |
3e715c81 | 3274 | m = char_len_param_value (&len, &deferred); |
4ee9c684 | 3275 | if (m == MATCH_NO) |
3276 | goto syntax; | |
3277 | if (m == MATCH_ERROR) | |
3278 | goto done; | |
3279 | seen_length = 1; | |
3280 | ||
3281 | m = gfc_match_char (')'); | |
3282 | if (m == MATCH_YES) | |
3283 | goto done; | |
3284 | ||
3285 | if (gfc_match_char (',') != MATCH_YES) | |
3286 | goto syntax; | |
3287 | ||
c5d33754 | 3288 | gfc_match (" kind ="); /* Gobble optional text. */ |
4ee9c684 | 3289 | |
33399208 | 3290 | m = match_char_kind (&kind, &is_iso_c); |
4ee9c684 | 3291 | if (m == MATCH_ERROR) |
3292 | goto done; | |
3293 | if (m == MATCH_NO) | |
3294 | goto syntax; | |
3295 | ||
3296 | rparen: | |
3297 | /* Require a right-paren at this point. */ | |
3298 | m = gfc_match_char (')'); | |
3299 | if (m == MATCH_YES) | |
3300 | goto done; | |
3301 | ||
3302 | syntax: | |
3303 | gfc_error ("Syntax error in CHARACTER declaration at %C"); | |
3304 | m = MATCH_ERROR; | |
a3cbe8cc | 3305 | gfc_free_expr (len); |
3306 | return m; | |
4ee9c684 | 3307 | |
3308 | done: | |
8d39570e | 3309 | /* Deal with character functions after USE and IMPORT statements. */ |
3310 | if (gfc_matching_function) | |
077932f9 | 3311 | { |
8d39570e | 3312 | gfc_free_expr (len); |
077932f9 | 3313 | gfc_undo_symbols (); |
3314 | return MATCH_YES; | |
3315 | } | |
3316 | ||
4ee9c684 | 3317 | if (m != MATCH_YES) |
3318 | { | |
3319 | gfc_free_expr (len); | |
3320 | return m; | |
3321 | } | |
3322 | ||
3323 | /* Do some final massaging of the length values. */ | |
d270ce52 | 3324 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
4ee9c684 | 3325 | |
3326 | if (seen_length == 0) | |
9f4d9f83 | 3327 | cl->length = gfc_get_int_expr (gfc_charlen_int_kind, NULL, 1); |
4ee9c684 | 3328 | else |
91f09922 | 3329 | { |
5efb256e | 3330 | /* If gfortran ends up here, then len may be reducible to a constant. |
3331 | Try to do that here. If it does not reduce, simply assign len to | |
3332 | charlen. A complication occurs with user-defined generic functions, | |
3333 | which are not resolved. Use a private namespace to deal with | |
3334 | generic functions. */ | |
3335 | ||
91f09922 | 3336 | if (len && len->expr_type != EXPR_CONSTANT) |
3337 | { | |
5efb256e | 3338 | gfc_namespace *old_ns; |
91f09922 | 3339 | gfc_expr *e; |
5efb256e | 3340 | |
3341 | old_ns = gfc_current_ns; | |
3342 | gfc_current_ns = gfc_get_namespace (NULL, 0); | |
3343 | ||
91f09922 | 3344 | e = gfc_copy_expr (len); |
3345 | gfc_reduce_init_expr (e); | |
3346 | if (e->expr_type == EXPR_CONSTANT) | |
a3903232 | 3347 | { |
3348 | gfc_replace_expr (len, e); | |
3349 | if (mpz_cmp_si (len->value.integer, 0) < 0) | |
3350 | mpz_set_ui (len->value.integer, 0); | |
3351 | } | |
91f09922 | 3352 | else |
3353 | gfc_free_expr (e); | |
5efb256e | 3354 | |
3355 | gfc_free_namespace (gfc_current_ns); | |
3356 | gfc_current_ns = old_ns; | |
91f09922 | 3357 | } |
5efb256e | 3358 | |
3359 | cl->length = len; | |
91f09922 | 3360 | } |
4ee9c684 | 3361 | |
eeebe20b | 3362 | ts->u.cl = cl; |
33399208 | 3363 | ts->kind = kind == 0 ? gfc_default_character_kind : kind; |
3e715c81 | 3364 | ts->deferred = deferred; |
4ee9c684 | 3365 | |
df084314 | 3366 | /* We have to know if it was a C interoperable kind so we can |
c5d33754 | 3367 | do accurate type checking of bind(c) procs, etc. */ |
33399208 | 3368 | if (kind != 0) |
df084314 | 3369 | /* Mark this as C interoperable if being declared with one |
33399208 | 3370 | of the named constants from iso_c_binding. */ |
3371 | ts->is_c_interop = is_iso_c; | |
c5d33754 | 3372 | else if (len != NULL) |
33399208 | 3373 | /* Here, we might have parsed something such as: character(c_char) |
3374 | In this case, the parsing code above grabs the c_char when | |
3375 | looking for the length (line 1690, roughly). it's the last | |
3376 | testcase for parsing the kind params of a character variable. | |
3377 | However, it's not actually the length. this seems like it | |
8db94b3b | 3378 | could be an error. |
33399208 | 3379 | To see if the user used a C interop kind, test the expr |
3380 | of the so called length, and see if it's C interoperable. */ | |
3381 | ts->is_c_interop = len->ts.is_iso_c; | |
8db94b3b | 3382 | |
4ee9c684 | 3383 | return MATCH_YES; |
3384 | } | |
3385 | ||
3386 | ||
d7cd448a | 3387 | /* Matches a RECORD declaration. */ |
3388 | ||
3389 | static match | |
891196d7 | 3390 | match_record_decl (char *name) |
d7cd448a | 3391 | { |
3392 | locus old_loc; | |
3393 | old_loc = gfc_current_locus; | |
891196d7 | 3394 | match m; |
d7cd448a | 3395 | |
891196d7 | 3396 | m = gfc_match (" record /"); |
3397 | if (m == MATCH_YES) | |
d7cd448a | 3398 | { |
cf078427 | 3399 | if (!flag_dec_structure) |
d7cd448a | 3400 | { |
3401 | gfc_current_locus = old_loc; | |
3402 | gfc_error ("RECORD at %C is an extension, enable it with " | |
3403 | "-fdec-structure"); | |
3404 | return MATCH_ERROR; | |
3405 | } | |
891196d7 | 3406 | m = gfc_match (" %n/", name); |
3407 | if (m == MATCH_YES) | |
3408 | return MATCH_YES; | |
d7cd448a | 3409 | } |
3410 | ||
891196d7 | 3411 | gfc_current_locus = old_loc; |
cf078427 | 3412 | if (flag_dec_structure |
891196d7 | 3413 | && (gfc_match (" record% ") == MATCH_YES |
3414 | || gfc_match (" record%t") == MATCH_YES)) | |
3415 | gfc_error ("Structure name expected after RECORD at %C"); | |
3416 | if (m == MATCH_NO) | |
d7cd448a | 3417 | return MATCH_NO; |
891196d7 | 3418 | |
3419 | return MATCH_ERROR; | |
d7cd448a | 3420 | } |
3421 | ||
9d958d5b | 3422 | |
3423 | /* This function uses the gfc_actual_arglist 'type_param_spec_list' as a source | |
3424 | of expressions to substitute into the possibly parameterized expression | |
3425 | 'e'. Using a list is inefficient but should not be too bad since the | |
3426 | number of type parameters is not likely to be large. */ | |
3427 | static bool | |
3428 | insert_parameter_exprs (gfc_expr* e, gfc_symbol* sym ATTRIBUTE_UNUSED, | |
3429 | int* f) | |
3430 | { | |
3431 | gfc_actual_arglist *param; | |
3432 | gfc_expr *copy; | |
3433 | ||
3434 | if (e->expr_type != EXPR_VARIABLE) | |
3435 | return false; | |
3436 | ||
3437 | gcc_assert (e->symtree); | |
3438 | if (e->symtree->n.sym->attr.pdt_kind | |
3439 | || (*f != 0 && e->symtree->n.sym->attr.pdt_len)) | |
3440 | { | |
3441 | for (param = type_param_spec_list; param; param = param->next) | |
3442 | if (strcmp (e->symtree->n.sym->name, param->name) == 0) | |
3443 | break; | |
3444 | ||
3445 | if (param) | |
3446 | { | |
3447 | copy = gfc_copy_expr (param->expr); | |
3448 | *e = *copy; | |
3449 | free (copy); | |
3450 | } | |
3451 | } | |
3452 | ||
3453 | return false; | |
3454 | } | |
3455 | ||
3456 | ||
3457 | bool | |
3458 | gfc_insert_kind_parameter_exprs (gfc_expr *e) | |
3459 | { | |
3460 | return gfc_traverse_expr (e, NULL, &insert_parameter_exprs, 0); | |
3461 | } | |
3462 | ||
3463 | ||
3464 | bool | |
3465 | gfc_insert_parameter_exprs (gfc_expr *e, gfc_actual_arglist *param_list) | |
3466 | { | |
3467 | gfc_actual_arglist *old_param_spec_list = type_param_spec_list; | |
3468 | type_param_spec_list = param_list; | |
3469 | return gfc_traverse_expr (e, NULL, &insert_parameter_exprs, 1); | |
3470 | type_param_spec_list = NULL; | |
3471 | type_param_spec_list = old_param_spec_list; | |
3472 | } | |
3473 | ||
3474 | /* Determines the instance of a parameterized derived type to be used by | |
3475 | matching determining the values of the kind parameters and using them | |
3476 | in the name of the instance. If the instance exists, it is used, otherwise | |
3477 | a new derived type is created. */ | |
3478 | match | |
3479 | gfc_get_pdt_instance (gfc_actual_arglist *param_list, gfc_symbol **sym, | |
3480 | gfc_actual_arglist **ext_param_list) | |
3481 | { | |
3482 | /* The PDT template symbol. */ | |
3483 | gfc_symbol *pdt = *sym; | |
3484 | /* The symbol for the parameter in the template f2k_namespace. */ | |
3485 | gfc_symbol *param; | |
3486 | /* The hoped for instance of the PDT. */ | |
3487 | gfc_symbol *instance; | |
3488 | /* The list of parameters appearing in the PDT declaration. */ | |
3489 | gfc_formal_arglist *type_param_name_list; | |
3490 | /* Used to store the parameter specification list during recursive calls. */ | |
3491 | gfc_actual_arglist *old_param_spec_list; | |
3492 | /* Pointers to the parameter specification being used. */ | |
3493 | gfc_actual_arglist *actual_param; | |
3494 | gfc_actual_arglist *tail = NULL; | |
3495 | /* Used to build up the name of the PDT instance. The prefix uses 4 | |
3496 | characters and each KIND parameter 2 more. Allow 8 of the latter. */ | |
3497 | char name[GFC_MAX_SYMBOL_LEN + 21]; | |
3498 | ||
3499 | bool name_seen = (param_list == NULL); | |
3500 | bool assumed_seen = false; | |
3501 | bool deferred_seen = false; | |
3502 | bool spec_error = false; | |
3503 | int kind_value, i; | |
3504 | gfc_expr *kind_expr; | |
3505 | gfc_component *c1, *c2; | |
3506 | match m; | |
3507 | ||
3508 | type_param_spec_list = NULL; | |
3509 | ||
3510 | type_param_name_list = pdt->formal; | |
3511 | actual_param = param_list; | |
3512 | sprintf (name, "Pdt%s", pdt->name); | |
3513 | ||
3514 | /* Run through the parameter name list and pick up the actual | |
3515 | parameter values or use the default values in the PDT declaration. */ | |
3516 | for (; type_param_name_list; | |
3517 | type_param_name_list = type_param_name_list->next) | |
3518 | { | |
3519 | if (actual_param && actual_param->spec_type != SPEC_EXPLICIT) | |
3520 | { | |
3521 | if (actual_param->spec_type == SPEC_ASSUMED) | |
3522 | spec_error = deferred_seen; | |
3523 | else | |
3524 | spec_error = assumed_seen; | |
3525 | ||
3526 | if (spec_error) | |
3527 | { | |
3528 | gfc_error ("The type parameter spec list at %C cannot contain " | |
3529 | "both ASSUMED and DEFERRED parameters"); | |
87a0366f | 3530 | goto error_return; |
9d958d5b | 3531 | } |
3532 | } | |
3533 | ||
3534 | if (actual_param && actual_param->name) | |
3535 | name_seen = true; | |
3536 | param = type_param_name_list->sym; | |
3537 | ||
f0efd2e8 | 3538 | if (!param || !param->name) |
3539 | continue; | |
3540 | ||
87a0366f | 3541 | c1 = gfc_find_component (pdt, param->name, false, true, NULL); |
1148eb54 | 3542 | /* An error should already have been thrown in resolve.c |
3543 | (resolve_fl_derived0). */ | |
87a0366f | 3544 | if (!pdt->attr.use_assoc && !c1) |
1148eb54 | 3545 | goto error_return; |
87a0366f | 3546 | |
9d958d5b | 3547 | kind_expr = NULL; |
3548 | if (!name_seen) | |
3549 | { | |
87a0366f | 3550 | if (!actual_param && !(c1 && c1->initializer)) |
3551 | { | |
3552 | gfc_error ("The type parameter spec list at %C does not contain " | |
3553 | "enough parameter expressions"); | |
3554 | goto error_return; | |
3555 | } | |
3556 | else if (!actual_param && c1 && c1->initializer) | |
3557 | kind_expr = gfc_copy_expr (c1->initializer); | |
3558 | else if (actual_param && actual_param->spec_type == SPEC_EXPLICIT) | |
9d958d5b | 3559 | kind_expr = gfc_copy_expr (actual_param->expr); |
3560 | } | |
3561 | else | |
3562 | { | |
3563 | actual_param = param_list; | |
3564 | for (;actual_param; actual_param = actual_param->next) | |
3565 | if (actual_param->name | |
3566 | && strcmp (actual_param->name, param->name) == 0) | |
3567 | break; | |
3568 | if (actual_param && actual_param->spec_type == SPEC_EXPLICIT) | |
3569 | kind_expr = gfc_copy_expr (actual_param->expr); | |
3570 | else | |
3571 | { | |
dba5ed0d | 3572 | if (c1->initializer) |
3573 | kind_expr = gfc_copy_expr (c1->initializer); | |
9d958d5b | 3574 | else if (!(actual_param && param->attr.pdt_len)) |
3575 | { | |
4b8290f8 | 3576 | gfc_error ("The derived parameter %qs at %C does not " |
9d958d5b | 3577 | "have a default value", param->name); |
87a0366f | 3578 | goto error_return; |
9d958d5b | 3579 | } |
3580 | } | |
3581 | } | |
3582 | ||
3583 | /* Store the current parameter expressions in a temporary actual | |
3584 | arglist 'list' so that they can be substituted in the corresponding | |
3585 | expressions in the PDT instance. */ | |
3586 | if (type_param_spec_list == NULL) | |
3587 | { | |
3588 | type_param_spec_list = gfc_get_actual_arglist (); | |
3589 | tail = type_param_spec_list; | |
3590 | } | |
3591 | else | |
3592 | { | |
3593 | tail->next = gfc_get_actual_arglist (); | |
3594 | tail = tail->next; | |
3595 | } | |
3596 | tail->name = param->name; | |
3597 | ||
3598 | if (kind_expr) | |
3599 | { | |
9f96fdfe | 3600 | /* Try simplification even for LEN expressions. */ |
3601 | gfc_resolve_expr (kind_expr); | |
3602 | gfc_simplify_expr (kind_expr, 1); | |
87a0366f | 3603 | /* Variable expressions seem to default to BT_PROCEDURE. |
3604 | TODO find out why this is and fix it. */ | |
3605 | if (kind_expr->ts.type != BT_INTEGER | |
3606 | && kind_expr->ts.type != BT_PROCEDURE) | |
3607 | { | |
3608 | gfc_error ("The parameter expression at %C must be of " | |
3609 | "INTEGER type and not %s type", | |
3610 | gfc_basic_typename (kind_expr->ts.type)); | |
3611 | goto error_return; | |
3612 | } | |
3613 | ||
9d958d5b | 3614 | tail->expr = gfc_copy_expr (kind_expr); |
9d958d5b | 3615 | } |
3616 | ||
3617 | if (actual_param) | |
3618 | tail->spec_type = actual_param->spec_type; | |
3619 | ||
3620 | if (!param->attr.pdt_kind) | |
3621 | { | |
87a0366f | 3622 | if (!name_seen && actual_param) |
9d958d5b | 3623 | actual_param = actual_param->next; |
3624 | if (kind_expr) | |
3625 | { | |
3626 | gfc_free_expr (kind_expr); | |
3627 | kind_expr = NULL; | |
3628 | } | |
3629 | continue; | |
3630 | } | |
3631 | ||
3632 | if (actual_param | |
3633 | && (actual_param->spec_type == SPEC_ASSUMED | |
3634 | || actual_param->spec_type == SPEC_DEFERRED)) | |
3635 | { | |
4b8290f8 | 3636 | gfc_error ("The KIND parameter %qs at %C cannot either be " |
9d958d5b | 3637 | "ASSUMED or DEFERRED", param->name); |
87a0366f | 3638 | goto error_return; |
9d958d5b | 3639 | } |
3640 | ||
3641 | if (!kind_expr || !gfc_is_constant_expr (kind_expr)) | |
3642 | { | |
4b8290f8 | 3643 | gfc_error ("The value for the KIND parameter %qs at %C does not " |
9d958d5b | 3644 | "reduce to a constant expression", param->name); |
87a0366f | 3645 | goto error_return; |
9d958d5b | 3646 | } |
3647 | ||
3648 | gfc_extract_int (kind_expr, &kind_value); | |
e9366ef9 | 3649 | sprintf (name + strlen (name), "_%d", kind_value); |
9d958d5b | 3650 | |
3651 | if (!name_seen && actual_param) | |
3652 | actual_param = actual_param->next; | |
3653 | gfc_free_expr (kind_expr); | |
3654 | } | |
3655 | ||
87a0366f | 3656 | if (!name_seen && actual_param) |
3657 | { | |
3658 | gfc_error ("The type parameter spec list at %C contains too many " | |
3659 | "parameter expressions"); | |
3660 | goto error_return; | |
3661 | } | |
3662 | ||
9d958d5b | 3663 | /* Now we search for the PDT instance 'name'. If it doesn't exist, we |
3664 | build it, using 'pdt' as a template. */ | |
3665 | if (gfc_get_symbol (name, pdt->ns, &instance)) | |
3666 | { | |
3667 | gfc_error ("Parameterized derived type at %C is ambiguous"); | |
87a0366f | 3668 | goto error_return; |
9d958d5b | 3669 | } |
3670 | ||
3671 | m = MATCH_YES; | |
3672 | ||
3673 | if (instance->attr.flavor == FL_DERIVED | |
3674 | && instance->attr.pdt_type) | |
3675 | { | |
3676 | instance->refs++; | |
3677 | if (ext_param_list) | |
3678 | *ext_param_list = type_param_spec_list; | |
3679 | *sym = instance; | |
3680 | gfc_commit_symbols (); | |
3681 | return m; | |
3682 | } | |
3683 | ||
3684 | /* Start building the new instance of the parameterized type. */ | |
3685 | gfc_copy_attr (&instance->attr, &pdt->attr, &pdt->declared_at); | |
3686 | instance->attr.pdt_template = 0; | |
3687 | instance->attr.pdt_type = 1; | |
3688 | instance->declared_at = gfc_current_locus; | |
3689 | ||
3690 | /* Add the components, replacing the parameters in all expressions | |
3691 | with the expressions for their values in 'type_param_spec_list'. */ | |
3692 | c1 = pdt->components; | |
3693 | tail = type_param_spec_list; | |
3694 | for (; c1; c1 = c1->next) | |
3695 | { | |
3696 | gfc_add_component (instance, c1->name, &c2); | |
f0efd2e8 | 3697 | |
9d958d5b | 3698 | c2->ts = c1->ts; |
3699 | c2->attr = c1->attr; | |
3700 | ||
f0efd2e8 | 3701 | /* The order of declaration of the type_specs might not be the |
3702 | same as that of the components. */ | |
3703 | if (c1->attr.pdt_kind || c1->attr.pdt_len) | |
3704 | { | |
3705 | for (tail = type_param_spec_list; tail; tail = tail->next) | |
3706 | if (strcmp (c1->name, tail->name) == 0) | |
3707 | break; | |
3708 | } | |
3709 | ||
9d958d5b | 3710 | /* Deal with type extension by recursively calling this function |
3711 | to obtain the instance of the extended type. */ | |
3712 | if (gfc_current_state () != COMP_DERIVED | |
3713 | && c1 == pdt->components | |
3714 | && (c1->ts.type == BT_DERIVED || c1->ts.type == BT_CLASS) | |
3715 | && c1->ts.u.derived && c1->ts.u.derived->attr.pdt_template | |
3716 | && gfc_get_derived_super_type (*sym) == c2->ts.u.derived) | |
3717 | { | |
3718 | gfc_formal_arglist *f; | |
3719 | ||
3720 | old_param_spec_list = type_param_spec_list; | |
3721 | ||
3722 | /* Obtain a spec list appropriate to the extended type..*/ | |
3723 | actual_param = gfc_copy_actual_arglist (type_param_spec_list); | |
3724 | type_param_spec_list = actual_param; | |
3725 | for (f = c1->ts.u.derived->formal; f && f->next; f = f->next) | |
3726 | actual_param = actual_param->next; | |
3727 | if (actual_param) | |
3728 | { | |
3729 | gfc_free_actual_arglist (actual_param->next); | |
3730 | actual_param->next = NULL; | |
3731 | } | |
3732 | ||
3733 | /* Now obtain the PDT instance for the extended type. */ | |
3734 | c2->param_list = type_param_spec_list; | |
3735 | m = gfc_get_pdt_instance (type_param_spec_list, &c2->ts.u.derived, | |
3736 | NULL); | |
3737 | type_param_spec_list = old_param_spec_list; | |
3738 | ||
3739 | c2->ts.u.derived->refs++; | |
3740 | gfc_set_sym_referenced (c2->ts.u.derived); | |
3741 | ||
3742 | /* Set extension level. */ | |
3743 | if (c2->ts.u.derived->attr.extension == 255) | |
3744 | { | |
3745 | /* Since the extension field is 8 bit wide, we can only have | |
3746 | up to 255 extension levels. */ | |
3747 | gfc_error ("Maximum extension level reached with type %qs at %L", | |
3748 | c2->ts.u.derived->name, | |
3749 | &c2->ts.u.derived->declared_at); | |
87a0366f | 3750 | goto error_return; |
9d958d5b | 3751 | } |
3752 | instance->attr.extension = c2->ts.u.derived->attr.extension + 1; | |
3753 | ||
9d958d5b | 3754 | continue; |
3755 | } | |
3756 | ||
3757 | /* Set the component kind using the parameterized expression. */ | |
f0efd2e8 | 3758 | if ((c1->ts.kind == 0 || c1->ts.type == BT_CHARACTER) |
3759 | && c1->kind_expr != NULL) | |
9d958d5b | 3760 | { |
3761 | gfc_expr *e = gfc_copy_expr (c1->kind_expr); | |
3762 | gfc_insert_kind_parameter_exprs (e); | |
9f96fdfe | 3763 | gfc_simplify_expr (e, 1); |
9d958d5b | 3764 | gfc_extract_int (e, &c2->ts.kind); |
3765 | gfc_free_expr (e); | |
87a0366f | 3766 | if (gfc_validate_kind (c2->ts.type, c2->ts.kind, true) < 0) |
3767 | { | |
3768 | gfc_error ("Kind %d not supported for type %s at %C", | |
3769 | c2->ts.kind, gfc_basic_typename (c2->ts.type)); | |
3770 | goto error_return; | |
3771 | } | |
9d958d5b | 3772 | } |
3773 | ||
3774 | /* Similarly, set the string length if parameterized. */ | |
3775 | if (c1->ts.type == BT_CHARACTER | |
3776 | && c1->ts.u.cl->length | |
3777 | && gfc_derived_parameter_expr (c1->ts.u.cl->length)) | |
3778 | { | |
3779 | gfc_expr *e; | |
3780 | e = gfc_copy_expr (c1->ts.u.cl->length); | |
3781 | gfc_insert_kind_parameter_exprs (e); | |
3782 | gfc_simplify_expr (e, 1); | |
3783 | c2->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); | |
3784 | c2->ts.u.cl->length = e; | |
3785 | c2->attr.pdt_string = 1; | |
3786 | } | |
3787 | ||
3788 | /* Set up either the KIND/LEN initializer, if constant, | |
3789 | or the parameterized expression. Use the template | |
3790 | initializer if one is not already set in this instance. */ | |
3791 | if (c2->attr.pdt_kind || c2->attr.pdt_len) | |
3792 | { | |
3793 | if (tail && tail->expr && gfc_is_constant_expr (tail->expr)) | |
3794 | c2->initializer = gfc_copy_expr (tail->expr); | |
3795 | else if (tail && tail->expr) | |
3796 | { | |
3797 | c2->param_list = gfc_get_actual_arglist (); | |
3798 | c2->param_list->name = tail->name; | |
3799 | c2->param_list->expr = gfc_copy_expr (tail->expr); | |
3800 | c2->param_list->next = NULL; | |
3801 | } | |
3802 | ||
3803 | if (!c2->initializer && c1->initializer) | |
3804 | c2->initializer = gfc_copy_expr (c1->initializer); | |
9d958d5b | 3805 | } |
3806 | ||
3807 | /* Copy the array spec. */ | |
3808 | c2->as = gfc_copy_array_spec (c1->as); | |
3809 | if (c1->ts.type == BT_CLASS) | |
3810 | CLASS_DATA (c2)->as = gfc_copy_array_spec (CLASS_DATA (c1)->as); | |
3811 | ||
3812 | /* Determine if an array spec is parameterized. If so, substitute | |
3813 | in the parameter expressions for the bounds and set the pdt_array | |
3814 | attribute. Notice that this attribute must be unconditionally set | |
3815 | if this is an array of parameterized character length. */ | |
3816 | if (c1->as && c1->as->type == AS_EXPLICIT) | |
3817 | { | |
3818 | bool pdt_array = false; | |
3819 | ||
3820 | /* Are the bounds of the array parameterized? */ | |
3821 | for (i = 0; i < c1->as->rank; i++) | |
3822 | { | |
3823 | if (gfc_derived_parameter_expr (c1->as->lower[i])) | |
3824 | pdt_array = true; | |
3825 | if (gfc_derived_parameter_expr (c1->as->upper[i])) | |
3826 | pdt_array = true; | |
3827 | } | |
3828 | ||
3829 | /* If they are, free the expressions for the bounds and | |
3830 | replace them with the template expressions with substitute | |
3831 | values. */ | |
3832 | for (i = 0; pdt_array && i < c1->as->rank; i++) | |
3833 | { | |
3834 | gfc_expr *e; | |
3835 | e = gfc_copy_expr (c1->as->lower[i]); | |
3836 | gfc_insert_kind_parameter_exprs (e); | |
3837 | gfc_simplify_expr (e, 1); | |
3838 | gfc_free_expr (c2->as->lower[i]); | |
3839 | c2->as->lower[i] = e; | |
3840 | e = gfc_copy_expr (c1->as->upper[i]); | |
3841 | gfc_insert_kind_parameter_exprs (e); | |
3842 | gfc_simplify_expr (e, 1); | |
3843 | gfc_free_expr (c2->as->upper[i]); | |
3844 | c2->as->upper[i] = e; | |
3845 | } | |
3846 | c2->attr.pdt_array = pdt_array ? 1 : c2->attr.pdt_string; | |
8534bf8a | 3847 | if (c1->initializer) |
3848 | { | |
3849 | c2->initializer = gfc_copy_expr (c1->initializer); | |
3850 | gfc_insert_kind_parameter_exprs (c2->initializer); | |
3851 | gfc_simplify_expr (c2->initializer, 1); | |
3852 | } | |
9d958d5b | 3853 | } |
3854 | ||
3855 | /* Recurse into this function for PDT components. */ | |
3856 | if ((c1->ts.type == BT_DERIVED || c1->ts.type == BT_CLASS) | |
3857 | && c1->ts.u.derived && c1->ts.u.derived->attr.pdt_template) | |
3858 | { | |
3859 | gfc_actual_arglist *params; | |
3860 | /* The component in the template has a list of specification | |
3861 | expressions derived from its declaration. */ | |
3862 | params = gfc_copy_actual_arglist (c1->param_list); | |
3863 | actual_param = params; | |
3864 | /* Substitute the template parameters with the expressions | |
3865 | from the specification list. */ | |
3866 | for (;actual_param; actual_param = actual_param->next) | |
3867 | gfc_insert_parameter_exprs (actual_param->expr, | |
3868 | type_param_spec_list); | |
3869 | ||
3870 | /* Now obtain the PDT instance for the component. */ | |
3871 | old_param_spec_list = type_param_spec_list; | |
3872 | m = gfc_get_pdt_instance (params, &c2->ts.u.derived, NULL); | |
3873 | type_param_spec_list = old_param_spec_list; | |
3874 | ||
3875 | c2->param_list = params; | |
d11013dc | 3876 | if (!(c2->attr.pointer || c2->attr.allocatable)) |
3877 | c2->initializer = gfc_default_initializer (&c2->ts); | |
3878 | ||
3879 | if (c2->attr.allocatable) | |
3880 | instance->attr.alloc_comp = 1; | |
9d958d5b | 3881 | } |
3882 | } | |
3883 | ||
3884 | gfc_commit_symbol (instance); | |
3885 | if (ext_param_list) | |
3886 | *ext_param_list = type_param_spec_list; | |
3887 | *sym = instance; | |
3888 | return m; | |
87a0366f | 3889 | |
3890 | error_return: | |
3891 | gfc_free_actual_arglist (type_param_spec_list); | |
3892 | return MATCH_ERROR; | |
9d958d5b | 3893 | } |
3894 | ||
3895 | ||
e8152f13 | 3896 | /* Matches a declaration-type-spec (F03:R502). If successful, sets the ts |
3897 | structure to the matched specification. This is necessary for FUNCTION and | |
4ee9c684 | 3898 | IMPLICIT statements. |
3899 | ||
e14bee04 | 3900 | If implicit_flag is nonzero, then we don't check for the optional |
39351103 | 3901 | kind specification. Not doing so is needed for matching an IMPLICIT |
4ee9c684 | 3902 | statement correctly. */ |
3903 | ||
67a51c8e | 3904 | match |
e8152f13 | 3905 | gfc_match_decl_type_spec (gfc_typespec *ts, int implicit_flag) |
4ee9c684 | 3906 | { |
3907 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c2958b6b | 3908 | gfc_symbol *sym, *dt_sym; |
4ee9c684 | 3909 | match m; |
e0be6f02 | 3910 | char c; |
f446fb22 | 3911 | bool seen_deferred_kind, matched_type; |
c2958b6b | 3912 | const char *dt_name; |
4ee9c684 | 3913 | |
9d958d5b | 3914 | decl_type_param_list = NULL; |
3915 | ||
077932f9 | 3916 | /* A belt and braces check that the typespec is correctly being treated |
3917 | as a deferred characteristic association. */ | |
3918 | seen_deferred_kind = (gfc_current_state () == COMP_FUNCTION) | |
8d39570e | 3919 | && (gfc_current_block ()->result->ts.kind == -1) |
3920 | && (ts->kind == -1); | |
4ee9c684 | 3921 | gfc_clear_ts (ts); |
077932f9 | 3922 | if (seen_deferred_kind) |
3923 | ts->kind = -1; | |
4ee9c684 | 3924 | |
c5d33754 | 3925 | /* Clear the current binding label, in case one is given. */ |
7b2060ba | 3926 | curr_binding_label = NULL; |
c5d33754 | 3927 | |
25b29122 | 3928 | if (gfc_match (" byte") == MATCH_YES) |
3929 | { | |
60e19868 | 3930 | if (!gfc_notify_std (GFC_STD_GNU, "BYTE type at %C")) |
25b29122 | 3931 | return MATCH_ERROR; |
3932 | ||
3933 | if (gfc_validate_kind (BT_INTEGER, 1, true) < 0) | |
3934 | { | |
3935 | gfc_error ("BYTE type used at %C " | |
3936 | "is not available on the target machine"); | |
3937 | return MATCH_ERROR; | |
3938 | } | |
e14bee04 | 3939 | |
25b29122 | 3940 | ts->type = BT_INTEGER; |
3941 | ts->kind = 1; | |
3942 | return MATCH_YES; | |
3943 | } | |
3944 | ||
f446fb22 | 3945 | |
8c2d8d6d | 3946 | m = gfc_match (" type ("); |
f446fb22 | 3947 | matched_type = (m == MATCH_YES); |
8c2d8d6d | 3948 | if (matched_type) |
3949 | { | |
3950 | gfc_gobble_whitespace (); | |
3951 | if (gfc_peek_ascii_char () == '*') | |
3952 | { | |
3953 | if ((m = gfc_match ("*)")) != MATCH_YES) | |
3954 | return m; | |
d7cd448a | 3955 | if (gfc_comp_struct (gfc_current_state ())) |
8c2d8d6d | 3956 | { |
3957 | gfc_error ("Assumed type at %C is not allowed for components"); | |
3958 | return MATCH_ERROR; | |
3959 | } | |
2e2156cf | 3960 | if (!gfc_notify_std (GFC_STD_F2018, "Assumed type at %C")) |
8c2d8d6d | 3961 | return MATCH_ERROR; |
3962 | ts->type = BT_ASSUMED; | |
3963 | return MATCH_YES; | |
3964 | } | |
3965 | ||
3966 | m = gfc_match ("%n", name); | |
3967 | matched_type = (m == MATCH_YES); | |
3968 | } | |
3969 | ||
f446fb22 | 3970 | if ((matched_type && strcmp ("integer", name) == 0) |
3971 | || (!matched_type && gfc_match (" integer") == MATCH_YES)) | |
4ee9c684 | 3972 | { |
3973 | ts->type = BT_INTEGER; | |
b8a891cb | 3974 | ts->kind = gfc_default_integer_kind; |
4ee9c684 | 3975 | goto get_kind; |
3976 | } | |
3977 | ||
f446fb22 | 3978 | if ((matched_type && strcmp ("character", name) == 0) |
3979 | || (!matched_type && gfc_match (" character") == MATCH_YES)) | |
4ee9c684 | 3980 | { |
f446fb22 | 3981 | if (matched_type |
60e19868 | 3982 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3983 | "intrinsic-type-spec at %C")) | |
f446fb22 | 3984 | return MATCH_ERROR; |
3985 | ||
4ee9c684 | 3986 | ts->type = BT_CHARACTER; |
39351103 | 3987 | if (implicit_flag == 0) |
f446fb22 | 3988 | m = gfc_match_char_spec (ts); |
39351103 | 3989 | else |
f446fb22 | 3990 | m = MATCH_YES; |
3991 | ||
3992 | if (matched_type && m == MATCH_YES && gfc_match_char (')') != MATCH_YES) | |
3993 | m = MATCH_ERROR; | |
3994 | ||
3995 | return m; | |
4ee9c684 | 3996 | } |
3997 | ||
f446fb22 | 3998 | if ((matched_type && strcmp ("real", name) == 0) |
3999 | || (!matched_type && gfc_match (" real") == MATCH_YES)) | |
4ee9c684 | 4000 | { |
4001 | ts->type = BT_REAL; | |
b8a891cb | 4002 | ts->kind = gfc_default_real_kind; |
4ee9c684 | 4003 | goto get_kind; |
4004 | } | |
4005 | ||
f446fb22 | 4006 | if ((matched_type |
4007 | && (strcmp ("doubleprecision", name) == 0 | |
4008 | || (strcmp ("double", name) == 0 | |
4009 | && gfc_match (" precision") == MATCH_YES))) | |
4010 | || (!matched_type && gfc_match (" double precision") == MATCH_YES)) | |
4ee9c684 | 4011 | { |
f446fb22 | 4012 | if (matched_type |
60e19868 | 4013 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
4014 | "intrinsic-type-spec at %C")) | |
f446fb22 | 4015 | return MATCH_ERROR; |
4016 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
4017 | return MATCH_ERROR; | |
4018 | ||
4ee9c684 | 4019 | ts->type = BT_REAL; |
b8a891cb | 4020 | ts->kind = gfc_default_double_kind; |
4ee9c684 | 4021 | return MATCH_YES; |
4022 | } | |
4023 | ||
f446fb22 | 4024 | if ((matched_type && strcmp ("complex", name) == 0) |
4025 | || (!matched_type && gfc_match (" complex") == MATCH_YES)) | |
4ee9c684 | 4026 | { |
4027 | ts->type = BT_COMPLEX; | |
b8a891cb | 4028 | ts->kind = gfc_default_complex_kind; |
4ee9c684 | 4029 | goto get_kind; |
4030 | } | |
4031 | ||
f446fb22 | 4032 | if ((matched_type |
4033 | && (strcmp ("doublecomplex", name) == 0 | |
4034 | || (strcmp ("double", name) == 0 | |
4035 | && gfc_match (" complex") == MATCH_YES))) | |
4036 | || (!matched_type && gfc_match (" double complex") == MATCH_YES)) | |
4ee9c684 | 4037 | { |
60e19868 | 4038 | if (!gfc_notify_std (GFC_STD_GNU, "DOUBLE COMPLEX at %C")) |
f446fb22 | 4039 | return MATCH_ERROR; |
4040 | ||
4041 | if (matched_type | |
60e19868 | 4042 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
4043 | "intrinsic-type-spec at %C")) | |
f446fb22 | 4044 | return MATCH_ERROR; |
4045 | ||
4046 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
be7f01a1 | 4047 | return MATCH_ERROR; |
4048 | ||
4ee9c684 | 4049 | ts->type = BT_COMPLEX; |
b8a891cb | 4050 | ts->kind = gfc_default_double_kind; |
4ee9c684 | 4051 | return MATCH_YES; |
4052 | } | |
4053 | ||
f446fb22 | 4054 | if ((matched_type && strcmp ("logical", name) == 0) |
4055 | || (!matched_type && gfc_match (" logical") == MATCH_YES)) | |
4ee9c684 | 4056 | { |
4057 | ts->type = BT_LOGICAL; | |
b8a891cb | 4058 | ts->kind = gfc_default_logical_kind; |
4ee9c684 | 4059 | goto get_kind; |
4060 | } | |
4061 | ||
f446fb22 | 4062 | if (matched_type) |
9d958d5b | 4063 | { |
4064 | m = gfc_match_actual_arglist (1, &decl_type_param_list, true); | |
4065 | if (m == MATCH_ERROR) | |
4066 | return m; | |
4067 | ||
f446fb22 | 4068 | m = gfc_match_char (')'); |
9d958d5b | 4069 | } |
f446fb22 | 4070 | |
d7cd448a | 4071 | if (m != MATCH_YES) |
4072 | m = match_record_decl (name); | |
4073 | ||
4074 | if (matched_type || m == MATCH_YES) | |
4075 | { | |
4076 | ts->type = BT_DERIVED; | |
4077 | /* We accept record/s/ or type(s) where s is a structure, but we | |
4078 | * don't need all the extra derived-type stuff for structures. */ | |
4079 | if (gfc_find_symbol (gfc_dt_upper_string (name), NULL, 1, &sym)) | |
4080 | { | |
1b7008c4 | 4081 | gfc_error ("Type name %qs at %C is ambiguous", name); |
d7cd448a | 4082 | return MATCH_ERROR; |
4083 | } | |
9d958d5b | 4084 | |
4085 | if (sym && sym->attr.flavor == FL_DERIVED | |
4086 | && sym->attr.pdt_template | |
4087 | && gfc_current_state () != COMP_DERIVED) | |
4088 | { | |
4089 | m = gfc_get_pdt_instance (decl_type_param_list, &sym, NULL); | |
4090 | if (m != MATCH_YES) | |
4091 | return m; | |
4092 | gcc_assert (!sym->attr.pdt_template && sym->attr.pdt_type); | |
4093 | ts->u.derived = sym; | |
4094 | strcpy (name, gfc_dt_lower_string (sym->name)); | |
4095 | } | |
4096 | ||
d7cd448a | 4097 | if (sym && sym->attr.flavor == FL_STRUCT) |
4098 | { | |
4099 | ts->u.derived = sym; | |
4100 | return MATCH_YES; | |
4101 | } | |
4102 | /* Actually a derived type. */ | |
4103 | } | |
4104 | ||
1de1b1a9 | 4105 | else |
8ca7f89c | 4106 | { |
d7cd448a | 4107 | /* Match nested STRUCTURE declarations; only valid within another |
891196d7 | 4108 | structure declaration. */ |
cf078427 | 4109 | if (flag_dec_structure |
891196d7 | 4110 | && (gfc_current_state () == COMP_STRUCTURE |
4111 | || gfc_current_state () == COMP_MAP)) | |
4112 | { | |
4113 | m = gfc_match (" structure"); | |
4114 | if (m == MATCH_YES) | |
4115 | { | |
4116 | m = gfc_match_structure_decl (); | |
4117 | if (m == MATCH_YES) | |
4118 | { | |
4119 | /* gfc_new_block is updated by match_structure_decl. */ | |
4120 | ts->type = BT_DERIVED; | |
4121 | ts->u.derived = gfc_new_block; | |
4122 | return MATCH_YES; | |
4123 | } | |
4124 | } | |
4125 | if (m == MATCH_ERROR) | |
4126 | return MATCH_ERROR; | |
4127 | } | |
d7cd448a | 4128 | |
fa102e56 | 4129 | /* Match CLASS declarations. */ |
4130 | m = gfc_match (" class ( * )"); | |
4131 | if (m == MATCH_ERROR) | |
4132 | return MATCH_ERROR; | |
4133 | else if (m == MATCH_YES) | |
4134 | { | |
a90fe829 | 4135 | gfc_symbol *upe; |
4136 | gfc_symtree *st; | |
4137 | ts->type = BT_CLASS; | |
8db94b3b | 4138 | gfc_find_symbol ("STAR", gfc_current_ns, 1, &upe); |
a90fe829 | 4139 | if (upe == NULL) |
4140 | { | |
8db94b3b | 4141 | upe = gfc_new_symbol ("STAR", gfc_current_ns); |
4142 | st = gfc_new_symtree (&gfc_current_ns->sym_root, "STAR"); | |
a90fe829 | 4143 | st->n.sym = upe; |
4144 | gfc_set_sym_referenced (upe); | |
4145 | upe->refs++; | |
4146 | upe->ts.type = BT_VOID; | |
4147 | upe->attr.unlimited_polymorphic = 1; | |
4148 | /* This is essential to force the construction of | |
4149 | unlimited polymorphic component class containers. */ | |
4150 | upe->attr.zero_comp = 1; | |
76e207a9 | 4151 | if (!gfc_add_flavor (&upe->attr, FL_DERIVED, NULL, |
60e19868 | 4152 | &gfc_current_locus)) |
f7b2c82b | 4153 | return MATCH_ERROR; |
4154 | } | |
a90fe829 | 4155 | else |
4156 | { | |
f7b2c82b | 4157 | st = gfc_get_tbp_symtree (&gfc_current_ns->sym_root, "STAR"); |
a90fe829 | 4158 | st->n.sym = upe; |
4159 | upe->refs++; | |
4160 | } | |
4161 | ts->u.derived = upe; | |
4162 | return m; | |
4163 | } | |
fa102e56 | 4164 | |
9d958d5b | 4165 | m = gfc_match (" class ("); |
4166 | ||
4167 | if (m == MATCH_YES) | |
4168 | m = gfc_match ("%n", name); | |
4169 | else | |
4170 | return m; | |
4171 | ||
8ca7f89c | 4172 | if (m != MATCH_YES) |
4173 | return m; | |
1de1b1a9 | 4174 | ts->type = BT_CLASS; |
8ca7f89c | 4175 | |
60e19868 | 4176 | if (!gfc_notify_std (GFC_STD_F2003, "CLASS statement at %C")) |
e8152f13 | 4177 | return MATCH_ERROR; |
9d958d5b | 4178 | |
4179 | m = gfc_match_actual_arglist (1, &decl_type_param_list, true); | |
4180 | if (m == MATCH_ERROR) | |
4181 | return m; | |
4182 | ||
4183 | m = gfc_match_char (')'); | |
4184 | if (m != MATCH_YES) | |
4185 | return m; | |
8ca7f89c | 4186 | } |
4ee9c684 | 4187 | |
077932f9 | 4188 | /* Defer association of the derived type until the end of the |
4189 | specification block. However, if the derived type can be | |
8db94b3b | 4190 | found, add it to the typespec. */ |
077932f9 | 4191 | if (gfc_matching_function) |
67a51c8e | 4192 | { |
eeebe20b | 4193 | ts->u.derived = NULL; |
077932f9 | 4194 | if (gfc_current_state () != COMP_INTERFACE |
4195 | && !gfc_find_symbol (name, NULL, 1, &sym) && sym) | |
c2958b6b | 4196 | { |
4197 | sym = gfc_find_dt_in_generic (sym); | |
4198 | ts->u.derived = sym; | |
4199 | } | |
67a51c8e | 4200 | return MATCH_YES; |
4201 | } | |
4202 | ||
4203 | /* Search for the name but allow the components to be defined later. If | |
4204 | type = -1, this typespec has been seen in a function declaration but | |
c2958b6b | 4205 | the type could not be accessed at that point. The actual derived type is |
df084314 | 4206 | stored in a symtree with the first letter of the name capitalized; the |
c2958b6b | 4207 | symtree with the all lower-case name contains the associated |
4208 | generic function. */ | |
d7cd448a | 4209 | dt_name = gfc_dt_upper_string (name); |
077932f9 | 4210 | sym = NULL; |
c2958b6b | 4211 | dt_sym = NULL; |
4212 | if (ts->kind != -1) | |
4ee9c684 | 4213 | { |
c2958b6b | 4214 | gfc_get_ha_symbol (name, &sym); |
4215 | if (sym->generic && gfc_find_symbol (dt_name, NULL, 0, &dt_sym)) | |
4216 | { | |
716da296 | 4217 | gfc_error ("Type name %qs at %C is ambiguous", name); |
c2958b6b | 4218 | return MATCH_ERROR; |
4219 | } | |
4220 | if (sym->generic && !dt_sym) | |
4221 | dt_sym = gfc_find_dt_in_generic (sym); | |
87a0366f | 4222 | |
4223 | /* Host associated PDTs can get confused with their constructors | |
4224 | because they ar instantiated in the template's namespace. */ | |
4225 | if (!dt_sym) | |
4226 | { | |
4227 | if (gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
4228 | { | |
4229 | gfc_error ("Type name %qs at %C is ambiguous", name); | |
4230 | return MATCH_ERROR; | |
4231 | } | |
4232 | if (dt_sym && !dt_sym->attr.pdt_type) | |
4233 | dt_sym = NULL; | |
4234 | } | |
4ee9c684 | 4235 | } |
67a51c8e | 4236 | else if (ts->kind == -1) |
4237 | { | |
077932f9 | 4238 | int iface = gfc_state_stack->previous->state != COMP_INTERFACE |
4239 | || gfc_current_ns->has_import_set; | |
c2958b6b | 4240 | gfc_find_symbol (name, NULL, iface, &sym); |
4241 | if (sym && sym->generic && gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
8db94b3b | 4242 | { |
716da296 | 4243 | gfc_error ("Type name %qs at %C is ambiguous", name); |
67a51c8e | 4244 | return MATCH_ERROR; |
4245 | } | |
c2958b6b | 4246 | if (sym && sym->generic && !dt_sym) |
4247 | dt_sym = gfc_find_dt_in_generic (sym); | |
67a51c8e | 4248 | |
077932f9 | 4249 | ts->kind = 0; |
67a51c8e | 4250 | if (sym == NULL) |
4251 | return MATCH_NO; | |
4252 | } | |
4ee9c684 | 4253 | |
d7cd448a | 4254 | if ((sym->attr.flavor != FL_UNKNOWN && sym->attr.flavor != FL_STRUCT |
c2958b6b | 4255 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.generic)) |
4256 | || sym->attr.subroutine) | |
4257 | { | |
e87256b0 | 4258 | gfc_error ("Type name %qs at %C conflicts with previously declared " |
4259 | "entity at %L, which has the same name", name, | |
4260 | &sym->declared_at); | |
c2958b6b | 4261 | return MATCH_ERROR; |
4262 | } | |
4ee9c684 | 4263 | |
9d958d5b | 4264 | if (sym && sym->attr.flavor == FL_DERIVED |
4265 | && sym->attr.pdt_template | |
4266 | && gfc_current_state () != COMP_DERIVED) | |
87a0366f | 4267 | { |
4268 | m = gfc_get_pdt_instance (decl_type_param_list, &sym, NULL); | |
4269 | if (m != MATCH_YES) | |
4270 | return m; | |
4271 | gcc_assert (!sym->attr.pdt_template && sym->attr.pdt_type); | |
4272 | ts->u.derived = sym; | |
4273 | strcpy (name, gfc_dt_lower_string (sym->name)); | |
4274 | } | |
9d958d5b | 4275 | |
72bec0a3 | 4276 | gfc_save_symbol_data (sym); |
077932f9 | 4277 | gfc_set_sym_referenced (sym); |
c2958b6b | 4278 | if (!sym->attr.generic |
60e19868 | 4279 | && !gfc_add_generic (&sym->attr, sym->name, NULL)) |
c2958b6b | 4280 | return MATCH_ERROR; |
4281 | ||
4282 | if (!sym->attr.function | |
60e19868 | 4283 | && !gfc_add_function (&sym->attr, sym->name, NULL)) |
c2958b6b | 4284 | return MATCH_ERROR; |
4285 | ||
9d958d5b | 4286 | if (dt_sym && dt_sym->attr.flavor == FL_DERIVED |
4287 | && dt_sym->attr.pdt_template | |
4288 | && gfc_current_state () != COMP_DERIVED) | |
4289 | { | |
4290 | m = gfc_get_pdt_instance (decl_type_param_list, &dt_sym, NULL); | |
4291 | if (m != MATCH_YES) | |
4292 | return m; | |
4293 | gcc_assert (!dt_sym->attr.pdt_template && dt_sym->attr.pdt_type); | |
4294 | } | |
4295 | ||
c2958b6b | 4296 | if (!dt_sym) |
4297 | { | |
4298 | gfc_interface *intr, *head; | |
4299 | ||
4300 | /* Use upper case to save the actual derived-type symbol. */ | |
4301 | gfc_get_symbol (dt_name, NULL, &dt_sym); | |
dc326dc0 | 4302 | dt_sym->name = gfc_get_string ("%s", sym->name); |
c2958b6b | 4303 | head = sym->generic; |
4304 | intr = gfc_get_interface (); | |
4305 | intr->sym = dt_sym; | |
4306 | intr->where = gfc_current_locus; | |
4307 | intr->next = head; | |
4308 | sym->generic = intr; | |
4309 | sym->attr.if_source = IFSRC_DECL; | |
4310 | } | |
72bec0a3 | 4311 | else |
4312 | gfc_save_symbol_data (dt_sym); | |
c2958b6b | 4313 | |
4314 | gfc_set_sym_referenced (dt_sym); | |
4315 | ||
d7cd448a | 4316 | if (dt_sym->attr.flavor != FL_DERIVED && dt_sym->attr.flavor != FL_STRUCT |
60e19868 | 4317 | && !gfc_add_flavor (&dt_sym->attr, FL_DERIVED, sym->name, NULL)) |
c2958b6b | 4318 | return MATCH_ERROR; |
4319 | ||
4320 | ts->u.derived = dt_sym; | |
4ee9c684 | 4321 | |
4322 | return MATCH_YES; | |
4323 | ||
4324 | get_kind: | |
f446fb22 | 4325 | if (matched_type |
60e19868 | 4326 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
4327 | "intrinsic-type-spec at %C")) | |
f446fb22 | 4328 | return MATCH_ERROR; |
4329 | ||
4ee9c684 | 4330 | /* For all types except double, derived and character, look for an |
4331 | optional kind specifier. MATCH_NO is actually OK at this point. */ | |
39351103 | 4332 | if (implicit_flag == 1) |
f446fb22 | 4333 | { |
4334 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
4335 | return MATCH_ERROR; | |
4336 | ||
4337 | return MATCH_YES; | |
4338 | } | |
4ee9c684 | 4339 | |
18f3698a | 4340 | if (gfc_current_form == FORM_FREE) |
4341 | { | |
2c89e2a0 | 4342 | c = gfc_peek_ascii_char (); |
4343 | if (!gfc_is_whitespace (c) && c != '*' && c != '(' | |
1a9745d2 | 4344 | && c != ':' && c != ',') |
f446fb22 | 4345 | { |
4346 | if (matched_type && c == ')') | |
4347 | { | |
4348 | gfc_next_ascii_char (); | |
4349 | return MATCH_YES; | |
4350 | } | |
4351 | return MATCH_NO; | |
4352 | } | |
18f3698a | 4353 | } |
4354 | ||
67a51c8e | 4355 | m = gfc_match_kind_spec (ts, false); |
4ee9c684 | 4356 | if (m == MATCH_NO && ts->type != BT_CHARACTER) |
9627a89d | 4357 | { |
4358 | m = gfc_match_old_kind_spec (ts); | |
4359 | if (gfc_validate_kind (ts->type, ts->kind, true) == -1) | |
4360 | return MATCH_ERROR; | |
4361 | } | |
4ee9c684 | 4362 | |
f446fb22 | 4363 | if (matched_type && gfc_match_char (')') != MATCH_YES) |
4364 | return MATCH_ERROR; | |
4365 | ||
077932f9 | 4366 | /* Defer association of the KIND expression of function results |
4367 | until after USE and IMPORT statements. */ | |
4368 | if ((gfc_current_state () == COMP_NONE && gfc_error_flag_test ()) | |
4369 | || gfc_matching_function) | |
4370 | return MATCH_YES; | |
4371 | ||
4ee9c684 | 4372 | if (m == MATCH_NO) |
4373 | m = MATCH_YES; /* No kind specifier found. */ | |
4374 | ||
4375 | return m; | |
4376 | } | |
4377 | ||
4378 | ||
39351103 | 4379 | /* Match an IMPLICIT NONE statement. Actually, this statement is |
4380 | already matched in parse.c, or we would not end up here in the | |
4381 | first place. So the only thing we need to check, is if there is | |
4382 | trailing garbage. If not, the match is successful. */ | |
4383 | ||
4384 | match | |
4385 | gfc_match_implicit_none (void) | |
4386 | { | |
0daab503 | 4387 | char c; |
4388 | match m; | |
4389 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4390 | bool type = false; | |
4391 | bool external = false; | |
94fea777 | 4392 | locus cur_loc = gfc_current_locus; |
4393 | ||
4394 | if (gfc_current_ns->seen_implicit_none | |
4395 | || gfc_current_ns->has_implicit_none_export) | |
4396 | { | |
4397 | gfc_error ("Duplicate IMPLICIT NONE statement at %C"); | |
4398 | return MATCH_ERROR; | |
4399 | } | |
0daab503 | 4400 | |
4401 | gfc_gobble_whitespace (); | |
4402 | c = gfc_peek_ascii_char (); | |
4403 | if (c == '(') | |
4404 | { | |
4405 | (void) gfc_next_ascii_char (); | |
003e134b | 4406 | if (!gfc_notify_std (GFC_STD_F2018, "IMPORT NONE with spec list at %C")) |
0daab503 | 4407 | return MATCH_ERROR; |
94fea777 | 4408 | |
4409 | gfc_gobble_whitespace (); | |
4410 | if (gfc_peek_ascii_char () == ')') | |
0daab503 | 4411 | { |
94fea777 | 4412 | (void) gfc_next_ascii_char (); |
4413 | type = true; | |
4414 | } | |
4415 | else | |
4416 | for(;;) | |
4417 | { | |
4418 | m = gfc_match (" %n", name); | |
4419 | if (m != MATCH_YES) | |
4420 | return MATCH_ERROR; | |
0daab503 | 4421 | |
94fea777 | 4422 | if (strcmp (name, "type") == 0) |
4423 | type = true; | |
4424 | else if (strcmp (name, "external") == 0) | |
4425 | external = true; | |
4426 | else | |
4427 | return MATCH_ERROR; | |
0daab503 | 4428 | |
94fea777 | 4429 | gfc_gobble_whitespace (); |
4430 | c = gfc_next_ascii_char (); | |
4431 | if (c == ',') | |
4432 | continue; | |
4433 | if (c == ')') | |
4434 | break; | |
4435 | return MATCH_ERROR; | |
4436 | } | |
0daab503 | 4437 | } |
4438 | else | |
4439 | type = true; | |
4440 | ||
4441 | if (gfc_match_eos () != MATCH_YES) | |
4442 | return MATCH_ERROR; | |
4443 | ||
94fea777 | 4444 | gfc_set_implicit_none (type, external, &cur_loc); |
0daab503 | 4445 | |
4446 | return MATCH_YES; | |
39351103 | 4447 | } |
4448 | ||
4449 | ||
4450 | /* Match the letter range(s) of an IMPLICIT statement. */ | |
4451 | ||
4452 | static match | |
b70528c7 | 4453 | match_implicit_range (void) |
39351103 | 4454 | { |
e0be6f02 | 4455 | char c, c1, c2; |
4456 | int inner; | |
39351103 | 4457 | locus cur_loc; |
4458 | ||
4459 | cur_loc = gfc_current_locus; | |
4460 | ||
4461 | gfc_gobble_whitespace (); | |
e0be6f02 | 4462 | c = gfc_next_ascii_char (); |
39351103 | 4463 | if (c != '(') |
4464 | { | |
4465 | gfc_error ("Missing character range in IMPLICIT at %C"); | |
4466 | goto bad; | |
4467 | } | |
4468 | ||
4469 | inner = 1; | |
4470 | while (inner) | |
4471 | { | |
4472 | gfc_gobble_whitespace (); | |
e0be6f02 | 4473 | c1 = gfc_next_ascii_char (); |
39351103 | 4474 | if (!ISALPHA (c1)) |
4475 | goto bad; | |
4476 | ||
4477 | gfc_gobble_whitespace (); | |
e0be6f02 | 4478 | c = gfc_next_ascii_char (); |
39351103 | 4479 | |
4480 | switch (c) | |
4481 | { | |
4482 | case ')': | |
f6d0e37a | 4483 | inner = 0; /* Fall through. */ |
39351103 | 4484 | |
4485 | case ',': | |
4486 | c2 = c1; | |
4487 | break; | |
4488 | ||
4489 | case '-': | |
4490 | gfc_gobble_whitespace (); | |
e0be6f02 | 4491 | c2 = gfc_next_ascii_char (); |
39351103 | 4492 | if (!ISALPHA (c2)) |
4493 | goto bad; | |
4494 | ||
4495 | gfc_gobble_whitespace (); | |
e0be6f02 | 4496 | c = gfc_next_ascii_char (); |
39351103 | 4497 | |
4498 | if ((c != ',') && (c != ')')) | |
4499 | goto bad; | |
4500 | if (c == ')') | |
4501 | inner = 0; | |
4502 | ||
4503 | break; | |
4504 | ||
4505 | default: | |
4506 | goto bad; | |
4507 | } | |
4508 | ||
4509 | if (c1 > c2) | |
4510 | { | |
4511 | gfc_error ("Letters must be in alphabetic order in " | |
4512 | "IMPLICIT statement at %C"); | |
4513 | goto bad; | |
4514 | } | |
4515 | ||
4516 | /* See if we can add the newly matched range to the pending | |
1a9745d2 | 4517 | implicits from this IMPLICIT statement. We do not check for |
4518 | conflicts with whatever earlier IMPLICIT statements may have | |
4519 | set. This is done when we've successfully finished matching | |
4520 | the current one. */ | |
60e19868 | 4521 | if (!gfc_add_new_implicit_range (c1, c2)) |
39351103 | 4522 | goto bad; |
4523 | } | |
4524 | ||
4525 | return MATCH_YES; | |
4526 | ||
4527 | bad: | |
4528 | gfc_syntax_error (ST_IMPLICIT); | |
4529 | ||
4530 | gfc_current_locus = cur_loc; | |
4531 | return MATCH_ERROR; | |
4532 | } | |
4533 | ||
4534 | ||
4535 | /* Match an IMPLICIT statement, storing the types for | |
4536 | gfc_set_implicit() if the statement is accepted by the parser. | |
4537 | There is a strange looking, but legal syntactic construction | |
4538 | possible. It looks like: | |
4539 | ||
4540 | IMPLICIT INTEGER (a-b) (c-d) | |
4541 | ||
4542 | This is legal if "a-b" is a constant expression that happens to | |
4543 | equal one of the legal kinds for integers. The real problem | |
4544 | happens with an implicit specification that looks like: | |
4545 | ||
4546 | IMPLICIT INTEGER (a-b) | |
4547 | ||
4548 | In this case, a typespec matcher that is "greedy" (as most of the | |
4549 | matchers are) gobbles the character range as a kindspec, leaving | |
4550 | nothing left. We therefore have to go a bit more slowly in the | |
4551 | matching process by inhibiting the kindspec checking during | |
4552 | typespec matching and checking for a kind later. */ | |
4553 | ||
4554 | match | |
4555 | gfc_match_implicit (void) | |
4556 | { | |
4557 | gfc_typespec ts; | |
4558 | locus cur_loc; | |
e0be6f02 | 4559 | char c; |
39351103 | 4560 | match m; |
4561 | ||
0daab503 | 4562 | if (gfc_current_ns->seen_implicit_none) |
4563 | { | |
4564 | gfc_error ("IMPLICIT statement at %C following an IMPLICIT NONE (type) " | |
4565 | "statement"); | |
4566 | return MATCH_ERROR; | |
4567 | } | |
4568 | ||
52179f31 | 4569 | gfc_clear_ts (&ts); |
4570 | ||
39351103 | 4571 | /* We don't allow empty implicit statements. */ |
4572 | if (gfc_match_eos () == MATCH_YES) | |
4573 | { | |
4574 | gfc_error ("Empty IMPLICIT statement at %C"); | |
4575 | return MATCH_ERROR; | |
4576 | } | |
4577 | ||
39351103 | 4578 | do |
4579 | { | |
b70528c7 | 4580 | /* First cleanup. */ |
4581 | gfc_clear_new_implicit (); | |
4582 | ||
39351103 | 4583 | /* A basic type is mandatory here. */ |
e8152f13 | 4584 | m = gfc_match_decl_type_spec (&ts, 1); |
39351103 | 4585 | if (m == MATCH_ERROR) |
4586 | goto error; | |
4587 | if (m == MATCH_NO) | |
4588 | goto syntax; | |
4589 | ||
4590 | cur_loc = gfc_current_locus; | |
b70528c7 | 4591 | m = match_implicit_range (); |
39351103 | 4592 | |
4593 | if (m == MATCH_YES) | |
4594 | { | |
b70528c7 | 4595 | /* We may have <TYPE> (<RANGE>). */ |
39351103 | 4596 | gfc_gobble_whitespace (); |
94fea777 | 4597 | c = gfc_peek_ascii_char (); |
4598 | if (c == ',' || c == '\n' || c == ';' || c == '!') | |
b70528c7 | 4599 | { |
4600 | /* Check for CHARACTER with no length parameter. */ | |
eeebe20b | 4601 | if (ts.type == BT_CHARACTER && !ts.u.cl) |
b70528c7 | 4602 | { |
b8a891cb | 4603 | ts.kind = gfc_default_character_kind; |
d270ce52 | 4604 | ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
9f4d9f83 | 4605 | ts.u.cl->length = gfc_get_int_expr (gfc_charlen_int_kind, |
126387b5 | 4606 | NULL, 1); |
b70528c7 | 4607 | } |
4608 | ||
4609 | /* Record the Successful match. */ | |
60e19868 | 4610 | if (!gfc_merge_new_implicit (&ts)) |
b70528c7 | 4611 | return MATCH_ERROR; |
94fea777 | 4612 | if (c == ',') |
4613 | c = gfc_next_ascii_char (); | |
4614 | else if (gfc_match_eos () == MATCH_ERROR) | |
4615 | goto error; | |
b70528c7 | 4616 | continue; |
4617 | } | |
39351103 | 4618 | |
4619 | gfc_current_locus = cur_loc; | |
4620 | } | |
4621 | ||
b70528c7 | 4622 | /* Discard the (incorrectly) matched range. */ |
4623 | gfc_clear_new_implicit (); | |
4624 | ||
4625 | /* Last chance -- check <TYPE> <SELECTOR> (<RANGE>). */ | |
4626 | if (ts.type == BT_CHARACTER) | |
10f5dcc0 | 4627 | m = gfc_match_char_spec (&ts); |
b70528c7 | 4628 | else |
39351103 | 4629 | { |
67a51c8e | 4630 | m = gfc_match_kind_spec (&ts, false); |
39351103 | 4631 | if (m == MATCH_NO) |
b70528c7 | 4632 | { |
4633 | m = gfc_match_old_kind_spec (&ts); | |
4634 | if (m == MATCH_ERROR) | |
4635 | goto error; | |
4636 | if (m == MATCH_NO) | |
4637 | goto syntax; | |
4638 | } | |
39351103 | 4639 | } |
b70528c7 | 4640 | if (m == MATCH_ERROR) |
4641 | goto error; | |
39351103 | 4642 | |
b70528c7 | 4643 | m = match_implicit_range (); |
39351103 | 4644 | if (m == MATCH_ERROR) |
4645 | goto error; | |
4646 | if (m == MATCH_NO) | |
4647 | goto syntax; | |
4648 | ||
4649 | gfc_gobble_whitespace (); | |
e0be6f02 | 4650 | c = gfc_next_ascii_char (); |
94fea777 | 4651 | if (c != ',' && gfc_match_eos () != MATCH_YES) |
39351103 | 4652 | goto syntax; |
4653 | ||
60e19868 | 4654 | if (!gfc_merge_new_implicit (&ts)) |
b70528c7 | 4655 | return MATCH_ERROR; |
39351103 | 4656 | } |
4657 | while (c == ','); | |
4658 | ||
b70528c7 | 4659 | return MATCH_YES; |
39351103 | 4660 | |
4661 | syntax: | |
4662 | gfc_syntax_error (ST_IMPLICIT); | |
4663 | ||
4664 | error: | |
4665 | return MATCH_ERROR; | |
4666 | } | |
4667 | ||
f6d0e37a | 4668 | |
d67fc9ae | 4669 | match |
4670 | gfc_match_import (void) | |
4671 | { | |
4672 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4673 | match m; | |
4674 | gfc_symbol *sym; | |
4675 | gfc_symtree *st; | |
4676 | ||
f6d0e37a | 4677 | if (gfc_current_ns->proc_name == NULL |
4678 | || gfc_current_ns->proc_name->attr.if_source != IFSRC_IFBODY) | |
d67fc9ae | 4679 | { |
4680 | gfc_error ("IMPORT statement at %C only permitted in " | |
4681 | "an INTERFACE body"); | |
4682 | return MATCH_ERROR; | |
4683 | } | |
4684 | ||
4b8eb6ca | 4685 | if (gfc_current_ns->proc_name->attr.module_procedure) |
4686 | { | |
4687 | gfc_error ("F2008: C1210 IMPORT statement at %C is not permitted " | |
4688 | "in a module procedure interface body"); | |
4689 | return MATCH_ERROR; | |
4690 | } | |
4691 | ||
60e19868 | 4692 | if (!gfc_notify_std (GFC_STD_F2003, "IMPORT statement at %C")) |
d67fc9ae | 4693 | return MATCH_ERROR; |
4694 | ||
4695 | if (gfc_match_eos () == MATCH_YES) | |
4696 | { | |
4697 | /* All host variables should be imported. */ | |
4698 | gfc_current_ns->has_import_set = 1; | |
4699 | return MATCH_YES; | |
4700 | } | |
4701 | ||
4702 | if (gfc_match (" ::") == MATCH_YES) | |
4703 | { | |
4704 | if (gfc_match_eos () == MATCH_YES) | |
1a9745d2 | 4705 | { |
4706 | gfc_error ("Expecting list of named entities at %C"); | |
4707 | return MATCH_ERROR; | |
4708 | } | |
d67fc9ae | 4709 | } |
4710 | ||
4711 | for(;;) | |
4712 | { | |
495e197c | 4713 | sym = NULL; |
d67fc9ae | 4714 | m = gfc_match (" %n", name); |
4715 | switch (m) | |
4716 | { | |
4717 | case MATCH_YES: | |
096d4ad9 | 4718 | if (gfc_current_ns->parent != NULL |
f6d0e37a | 4719 | && gfc_find_symbol (name, gfc_current_ns->parent, 1, &sym)) |
096d4ad9 | 4720 | { |
716da296 | 4721 | gfc_error ("Type name %qs at %C is ambiguous", name); |
096d4ad9 | 4722 | return MATCH_ERROR; |
4723 | } | |
6b010511 | 4724 | else if (!sym && gfc_current_ns->proc_name->ns->parent != NULL |
f6d0e37a | 4725 | && gfc_find_symbol (name, |
4726 | gfc_current_ns->proc_name->ns->parent, | |
4727 | 1, &sym)) | |
1a9745d2 | 4728 | { |
716da296 | 4729 | gfc_error ("Type name %qs at %C is ambiguous", name); |
1a9745d2 | 4730 | return MATCH_ERROR; |
4731 | } | |
4732 | ||
4733 | if (sym == NULL) | |
4734 | { | |
716da296 | 4735 | gfc_error ("Cannot IMPORT %qs from host scoping unit " |
1a9745d2 | 4736 | "at %C - does not exist.", name); |
4737 | return MATCH_ERROR; | |
4738 | } | |
4739 | ||
d67dd34f | 4740 | if (gfc_find_symtree (gfc_current_ns->sym_root, name)) |
1a9745d2 | 4741 | { |
6f521718 | 4742 | gfc_warning (0, "%qs is already IMPORTed from host scoping unit " |
4166acc7 | 4743 | "at %C", name); |
1a9745d2 | 4744 | goto next_item; |
4745 | } | |
4746 | ||
d67dd34f | 4747 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); |
1a9745d2 | 4748 | st->n.sym = sym; |
4749 | sym->refs++; | |
c723595c | 4750 | sym->attr.imported = 1; |
d67fc9ae | 4751 | |
c2958b6b | 4752 | if (sym->attr.generic && (sym = gfc_find_dt_in_generic (sym))) |
4753 | { | |
4754 | /* The actual derived type is stored in a symtree with the first | |
df084314 | 4755 | letter of the name capitalized; the symtree with the all |
293d72e0 | 4756 | lower-case name contains the associated generic function. */ |
c2958b6b | 4757 | st = gfc_new_symtree (&gfc_current_ns->sym_root, |
d7cd448a | 4758 | gfc_dt_upper_string (name)); |
c2958b6b | 4759 | st->n.sym = sym; |
4760 | sym->refs++; | |
4761 | sym->attr.imported = 1; | |
4762 | } | |
4763 | ||
d67fc9ae | 4764 | goto next_item; |
4765 | ||
4766 | case MATCH_NO: | |
4767 | break; | |
4768 | ||
4769 | case MATCH_ERROR: | |
4770 | return MATCH_ERROR; | |
4771 | } | |
4772 | ||
4773 | next_item: | |
4774 | if (gfc_match_eos () == MATCH_YES) | |
4775 | break; | |
4776 | if (gfc_match_char (',') != MATCH_YES) | |
4777 | goto syntax; | |
4778 | } | |
4779 | ||
4780 | return MATCH_YES; | |
4781 | ||
4782 | syntax: | |
4783 | gfc_error ("Syntax error in IMPORT statement at %C"); | |
4784 | return MATCH_ERROR; | |
4785 | } | |
39351103 | 4786 | |
f6d0e37a | 4787 | |
c72e5f7e | 4788 | /* A minimal implementation of gfc_match without whitespace, escape |
4789 | characters or variable arguments. Returns true if the next | |
4790 | characters match the TARGET template exactly. */ | |
4791 | ||
4792 | static bool | |
4793 | match_string_p (const char *target) | |
4794 | { | |
4795 | const char *p; | |
4796 | ||
4797 | for (p = target; *p; p++) | |
e0be6f02 | 4798 | if ((char) gfc_next_ascii_char () != *p) |
c72e5f7e | 4799 | return false; |
4800 | return true; | |
4801 | } | |
4802 | ||
4ee9c684 | 4803 | /* Matches an attribute specification including array specs. If |
4804 | successful, leaves the variables current_attr and current_as | |
4805 | holding the specification. Also sets the colon_seen variable for | |
4806 | later use by matchers associated with initializations. | |
4807 | ||
4808 | This subroutine is a little tricky in the sense that we don't know | |
4809 | if we really have an attr-spec until we hit the double colon. | |
4810 | Until that time, we can only return MATCH_NO. This forces us to | |
4811 | check for duplicate specification at this level. */ | |
4812 | ||
4813 | static match | |
4814 | match_attr_spec (void) | |
4815 | { | |
4ee9c684 | 4816 | /* Modifiers that can exist in a type statement. */ |
d55c3689 | 4817 | enum |
55be378c | 4818 | { GFC_DECL_BEGIN = 0, DECL_ALLOCATABLE = GFC_DECL_BEGIN, |
4819 | DECL_IN = INTENT_IN, DECL_OUT = INTENT_OUT, DECL_INOUT = INTENT_INOUT, | |
4820 | DECL_DIMENSION, DECL_EXTERNAL, | |
4821 | DECL_INTRINSIC, DECL_OPTIONAL, | |
3ea52af3 | 4822 | DECL_PARAMETER, DECL_POINTER, DECL_PROTECTED, DECL_PRIVATE, |
8e652fcf | 4823 | DECL_STATIC, DECL_AUTOMATIC, |
3ea52af3 | 4824 | DECL_PUBLIC, DECL_SAVE, DECL_TARGET, DECL_VALUE, DECL_VOLATILE, |
b3c3927c | 4825 | DECL_IS_BIND_C, DECL_CODIMENSION, DECL_ASYNCHRONOUS, DECL_CONTIGUOUS, |
9d958d5b | 4826 | DECL_LEN, DECL_KIND, DECL_NONE, GFC_DECL_END /* Sentinel */ |
d55c3689 | 4827 | }; |
4ee9c684 | 4828 | |
4829 | /* GFC_DECL_END is the sentinel, index starts at 0. */ | |
4830 | #define NUM_DECL GFC_DECL_END | |
4831 | ||
55be378c | 4832 | /* Make sure that values from sym_intent are safe to be used here. */ |
4833 | gcc_assert (INTENT_IN > 0); | |
4834 | ||
4ee9c684 | 4835 | locus start, seen_at[NUM_DECL]; |
4836 | int seen[NUM_DECL]; | |
9f1b7d17 | 4837 | unsigned int d; |
4ee9c684 | 4838 | const char *attr; |
4839 | match m; | |
60e19868 | 4840 | bool t; |
4ee9c684 | 4841 | |
4842 | gfc_clear_attr (¤t_attr); | |
cbb9e6aa | 4843 | start = gfc_current_locus; |
4ee9c684 | 4844 | |
4845 | current_as = NULL; | |
4846 | colon_seen = 0; | |
8ef2cf76 | 4847 | attr_seen = 0; |
4ee9c684 | 4848 | |
4849 | /* See if we get all of the keywords up to the final double colon. */ | |
4850 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
4851 | seen[d] = 0; | |
4852 | ||
4853 | for (;;) | |
4854 | { | |
e0be6f02 | 4855 | char ch; |
c5d33754 | 4856 | |
c72e5f7e | 4857 | d = DECL_NONE; |
4858 | gfc_gobble_whitespace (); | |
4859 | ||
e0be6f02 | 4860 | ch = gfc_next_ascii_char (); |
c72e5f7e | 4861 | if (ch == ':') |
4862 | { | |
4863 | /* This is the successful exit condition for the loop. */ | |
e0be6f02 | 4864 | if (gfc_next_ascii_char () == ':') |
c72e5f7e | 4865 | break; |
4866 | } | |
4867 | else if (ch == ',') | |
c5d33754 | 4868 | { |
c5d33754 | 4869 | gfc_gobble_whitespace (); |
e0be6f02 | 4870 | switch (gfc_peek_ascii_char ()) |
c5d33754 | 4871 | { |
c72e5f7e | 4872 | case 'a': |
738928be | 4873 | gfc_next_ascii_char (); |
4874 | switch (gfc_next_ascii_char ()) | |
4875 | { | |
4876 | case 'l': | |
4877 | if (match_string_p ("locatable")) | |
4878 | { | |
4879 | /* Matched "allocatable". */ | |
4880 | d = DECL_ALLOCATABLE; | |
4881 | } | |
4882 | break; | |
4883 | ||
4884 | case 's': | |
4885 | if (match_string_p ("ynchronous")) | |
4886 | { | |
4887 | /* Matched "asynchronous". */ | |
4888 | d = DECL_ASYNCHRONOUS; | |
4889 | } | |
4890 | break; | |
8e652fcf | 4891 | |
4892 | case 'u': | |
4893 | if (match_string_p ("tomatic")) | |
4894 | { | |
4895 | /* Matched "automatic". */ | |
4896 | d = DECL_AUTOMATIC; | |
4897 | } | |
4898 | break; | |
738928be | 4899 | } |
b3c3927c | 4900 | break; |
c72e5f7e | 4901 | |
4902 | case 'b': | |
c5d33754 | 4903 | /* Try and match the bind(c). */ |
75ae7f6c | 4904 | m = gfc_match_bind_c (NULL, true); |
5cf92482 | 4905 | if (m == MATCH_YES) |
c5d33754 | 4906 | d = DECL_IS_BIND_C; |
5cf92482 | 4907 | else if (m == MATCH_ERROR) |
4908 | goto cleanup; | |
c72e5f7e | 4909 | break; |
4910 | ||
aff518b0 | 4911 | case 'c': |
b3c3927c | 4912 | gfc_next_ascii_char (); |
4913 | if ('o' != gfc_next_ascii_char ()) | |
4914 | break; | |
4915 | switch (gfc_next_ascii_char ()) | |
4916 | { | |
4917 | case 'd': | |
4918 | if (match_string_p ("imension")) | |
4919 | { | |
4920 | d = DECL_CODIMENSION; | |
4921 | break; | |
4922 | } | |
e3533433 | 4923 | /* FALLTHRU */ |
b3c3927c | 4924 | case 'n': |
4925 | if (match_string_p ("tiguous")) | |
4926 | { | |
4927 | d = DECL_CONTIGUOUS; | |
4928 | break; | |
4929 | } | |
4930 | } | |
aff518b0 | 4931 | break; |
4932 | ||
c72e5f7e | 4933 | case 'd': |
4934 | if (match_string_p ("dimension")) | |
4935 | d = DECL_DIMENSION; | |
4936 | break; | |
4937 | ||
4938 | case 'e': | |
4939 | if (match_string_p ("external")) | |
4940 | d = DECL_EXTERNAL; | |
4941 | break; | |
4942 | ||
4943 | case 'i': | |
4944 | if (match_string_p ("int")) | |
4945 | { | |
e0be6f02 | 4946 | ch = gfc_next_ascii_char (); |
c72e5f7e | 4947 | if (ch == 'e') |
4948 | { | |
4949 | if (match_string_p ("nt")) | |
4950 | { | |
4951 | /* Matched "intent". */ | |
55be378c | 4952 | d = match_intent_spec (); |
4953 | if (d == INTENT_UNKNOWN) | |
4954 | { | |
4955 | m = MATCH_ERROR; | |
4956 | goto cleanup; | |
4957 | } | |
c72e5f7e | 4958 | } |
4959 | } | |
4960 | else if (ch == 'r') | |
4961 | { | |
4962 | if (match_string_p ("insic")) | |
4963 | { | |
4964 | /* Matched "intrinsic". */ | |
4965 | d = DECL_INTRINSIC; | |
4966 | } | |
4967 | } | |
4968 | } | |
4969 | break; | |
4970 | ||
9d958d5b | 4971 | case 'k': |
4972 | if (match_string_p ("kind")) | |
4973 | d = DECL_KIND; | |
4974 | break; | |
4975 | ||
4976 | case 'l': | |
4977 | if (match_string_p ("len")) | |
4978 | d = DECL_LEN; | |
4979 | break; | |
4980 | ||
c72e5f7e | 4981 | case 'o': |
4982 | if (match_string_p ("optional")) | |
4983 | d = DECL_OPTIONAL; | |
4984 | break; | |
4985 | ||
4986 | case 'p': | |
e0be6f02 | 4987 | gfc_next_ascii_char (); |
4988 | switch (gfc_next_ascii_char ()) | |
c72e5f7e | 4989 | { |
4990 | case 'a': | |
4991 | if (match_string_p ("rameter")) | |
4992 | { | |
4993 | /* Matched "parameter". */ | |
4994 | d = DECL_PARAMETER; | |
4995 | } | |
4996 | break; | |
4997 | ||
4998 | case 'o': | |
4999 | if (match_string_p ("inter")) | |
5000 | { | |
5001 | /* Matched "pointer". */ | |
5002 | d = DECL_POINTER; | |
5003 | } | |
5004 | break; | |
5005 | ||
5006 | case 'r': | |
e0be6f02 | 5007 | ch = gfc_next_ascii_char (); |
c72e5f7e | 5008 | if (ch == 'i') |
5009 | { | |
5010 | if (match_string_p ("vate")) | |
5011 | { | |
5012 | /* Matched "private". */ | |
5013 | d = DECL_PRIVATE; | |
5014 | } | |
5015 | } | |
5016 | else if (ch == 'o') | |
5017 | { | |
5018 | if (match_string_p ("tected")) | |
5019 | { | |
5020 | /* Matched "protected". */ | |
5021 | d = DECL_PROTECTED; | |
5022 | } | |
5023 | } | |
5024 | break; | |
5025 | ||
5026 | case 'u': | |
5027 | if (match_string_p ("blic")) | |
5028 | { | |
5029 | /* Matched "public". */ | |
5030 | d = DECL_PUBLIC; | |
5031 | } | |
5032 | break; | |
5033 | } | |
5034 | break; | |
5035 | ||
5036 | case 's': | |
8e652fcf | 5037 | gfc_next_ascii_char (); |
5038 | switch (gfc_next_ascii_char ()) | |
5039 | { | |
5040 | case 'a': | |
5041 | if (match_string_p ("ve")) | |
5042 | { | |
5043 | /* Matched "save". */ | |
5044 | d = DECL_SAVE; | |
5045 | } | |
5046 | break; | |
5047 | ||
5048 | case 't': | |
5049 | if (match_string_p ("atic")) | |
5050 | { | |
5051 | /* Matched "static". */ | |
5052 | d = DECL_STATIC; | |
5053 | } | |
5054 | break; | |
5055 | } | |
c72e5f7e | 5056 | break; |
5057 | ||
5058 | case 't': | |
5059 | if (match_string_p ("target")) | |
5060 | d = DECL_TARGET; | |
5061 | break; | |
5062 | ||
5063 | case 'v': | |
e0be6f02 | 5064 | gfc_next_ascii_char (); |
5065 | ch = gfc_next_ascii_char (); | |
c72e5f7e | 5066 | if (ch == 'a') |
5067 | { | |
5068 | if (match_string_p ("lue")) | |
5069 | { | |
5070 | /* Matched "value". */ | |
5071 | d = DECL_VALUE; | |
5072 | } | |
5073 | } | |
5074 | else if (ch == 'o') | |
5075 | { | |
5076 | if (match_string_p ("latile")) | |
5077 | { | |
5078 | /* Matched "volatile". */ | |
5079 | d = DECL_VOLATILE; | |
5080 | } | |
5081 | } | |
5082 | break; | |
c5d33754 | 5083 | } |
5084 | } | |
f3f9b222 | 5085 | |
c72e5f7e | 5086 | /* No double colon and no recognizable decl_type, so assume that |
5087 | we've been looking at something else the whole time. */ | |
5088 | if (d == DECL_NONE) | |
5089 | { | |
5090 | m = MATCH_NO; | |
5091 | goto cleanup; | |
5092 | } | |
e14bee04 | 5093 | |
7e221851 | 5094 | /* Check to make sure any parens are paired up correctly. */ |
5095 | if (gfc_match_parens () == MATCH_ERROR) | |
5096 | { | |
5097 | m = MATCH_ERROR; | |
5098 | goto cleanup; | |
5099 | } | |
5100 | ||
4ee9c684 | 5101 | seen[d]++; |
cbb9e6aa | 5102 | seen_at[d] = gfc_current_locus; |
4ee9c684 | 5103 | |
e97ac7c0 | 5104 | if (d == DECL_DIMENSION || d == DECL_CODIMENSION) |
4ee9c684 | 5105 | { |
e97ac7c0 | 5106 | gfc_array_spec *as = NULL; |
4ee9c684 | 5107 | |
e97ac7c0 | 5108 | m = gfc_match_array_spec (&as, d == DECL_DIMENSION, |
5109 | d == DECL_CODIMENSION); | |
5110 | ||
5111 | if (current_as == NULL) | |
5112 | current_as = as; | |
5113 | else if (m == MATCH_YES) | |
4ee9c684 | 5114 | { |
60e19868 | 5115 | if (!merge_array_spec (as, current_as, false)) |
9b58b4c7 | 5116 | m = MATCH_ERROR; |
434f0922 | 5117 | free (as); |
4ee9c684 | 5118 | } |
5119 | ||
aff518b0 | 5120 | if (m == MATCH_NO) |
5121 | { | |
e97ac7c0 | 5122 | if (d == DECL_CODIMENSION) |
5123 | gfc_error ("Missing codimension specification at %C"); | |
5124 | else | |
5125 | gfc_error ("Missing dimension specification at %C"); | |
aff518b0 | 5126 | m = MATCH_ERROR; |
5127 | } | |
5128 | ||
5129 | if (m == MATCH_ERROR) | |
5130 | goto cleanup; | |
5131 | } | |
4ee9c684 | 5132 | } |
5133 | ||
4ee9c684 | 5134 | /* Since we've seen a double colon, we have to be looking at an |
5135 | attr-spec. This means that we can now issue errors. */ | |
5136 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
5137 | if (seen[d] > 1) | |
5138 | { | |
5139 | switch (d) | |
5140 | { | |
5141 | case DECL_ALLOCATABLE: | |
5142 | attr = "ALLOCATABLE"; | |
5143 | break; | |
738928be | 5144 | case DECL_ASYNCHRONOUS: |
5145 | attr = "ASYNCHRONOUS"; | |
5146 | break; | |
aff518b0 | 5147 | case DECL_CODIMENSION: |
5148 | attr = "CODIMENSION"; | |
5149 | break; | |
b3c3927c | 5150 | case DECL_CONTIGUOUS: |
5151 | attr = "CONTIGUOUS"; | |
5152 | break; | |
4ee9c684 | 5153 | case DECL_DIMENSION: |
5154 | attr = "DIMENSION"; | |
5155 | break; | |
5156 | case DECL_EXTERNAL: | |
5157 | attr = "EXTERNAL"; | |
5158 | break; | |
5159 | case DECL_IN: | |
5160 | attr = "INTENT (IN)"; | |
5161 | break; | |
5162 | case DECL_OUT: | |
5163 | attr = "INTENT (OUT)"; | |
5164 | break; | |
5165 | case DECL_INOUT: | |
5166 | attr = "INTENT (IN OUT)"; | |
5167 | break; | |
5168 | case DECL_INTRINSIC: | |
5169 | attr = "INTRINSIC"; | |
5170 | break; | |
5171 | case DECL_OPTIONAL: | |
5172 | attr = "OPTIONAL"; | |
5173 | break; | |
9d958d5b | 5174 | case DECL_KIND: |
5175 | attr = "KIND"; | |
5176 | break; | |
5177 | case DECL_LEN: | |
5178 | attr = "LEN"; | |
5179 | break; | |
4ee9c684 | 5180 | case DECL_PARAMETER: |
5181 | attr = "PARAMETER"; | |
5182 | break; | |
5183 | case DECL_POINTER: | |
5184 | attr = "POINTER"; | |
5185 | break; | |
3ea52af3 | 5186 | case DECL_PROTECTED: |
5187 | attr = "PROTECTED"; | |
5188 | break; | |
4ee9c684 | 5189 | case DECL_PRIVATE: |
5190 | attr = "PRIVATE"; | |
5191 | break; | |
5192 | case DECL_PUBLIC: | |
5193 | attr = "PUBLIC"; | |
5194 | break; | |
5195 | case DECL_SAVE: | |
5196 | attr = "SAVE"; | |
5197 | break; | |
8e652fcf | 5198 | case DECL_STATIC: |
5199 | attr = "STATIC"; | |
5200 | break; | |
5201 | case DECL_AUTOMATIC: | |
5202 | attr = "AUTOMATIC"; | |
5203 | break; | |
4ee9c684 | 5204 | case DECL_TARGET: |
5205 | attr = "TARGET"; | |
5206 | break; | |
c5d33754 | 5207 | case DECL_IS_BIND_C: |
5208 | attr = "IS_BIND_C"; | |
5209 | break; | |
5210 | case DECL_VALUE: | |
5211 | attr = "VALUE"; | |
5212 | break; | |
ef814c81 | 5213 | case DECL_VOLATILE: |
5214 | attr = "VOLATILE"; | |
5215 | break; | |
4ee9c684 | 5216 | default: |
f6d0e37a | 5217 | attr = NULL; /* This shouldn't happen. */ |
4ee9c684 | 5218 | } |
5219 | ||
5220 | gfc_error ("Duplicate %s attribute at %L", attr, &seen_at[d]); | |
5221 | m = MATCH_ERROR; | |
5222 | goto cleanup; | |
5223 | } | |
5224 | ||
5225 | /* Now that we've dealt with duplicate attributes, add the attributes | |
5226 | to the current attribute. */ | |
5227 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
5228 | { | |
5229 | if (seen[d] == 0) | |
5230 | continue; | |
8ef2cf76 | 5231 | else |
5232 | attr_seen = 1; | |
4ee9c684 | 5233 | |
8e652fcf | 5234 | if ((d == DECL_STATIC || d == DECL_AUTOMATIC) |
5235 | && !flag_dec_static) | |
5236 | { | |
841da9cf | 5237 | gfc_error ("%s at %L is a DEC extension, enable with " |
5238 | "%<-fdec-static%>", | |
8e652fcf | 5239 | d == DECL_STATIC ? "STATIC" : "AUTOMATIC", &seen_at[d]); |
5240 | m = MATCH_ERROR; | |
5241 | goto cleanup; | |
5242 | } | |
5243 | /* Allow SAVE with STATIC, but don't complain. */ | |
5244 | if (d == DECL_STATIC && seen[DECL_SAVE]) | |
5245 | continue; | |
5246 | ||
4ee9c684 | 5247 | if (gfc_current_state () == COMP_DERIVED |
aff518b0 | 5248 | && d != DECL_DIMENSION && d != DECL_CODIMENSION |
5249 | && d != DECL_POINTER && d != DECL_PRIVATE | |
b3c3927c | 5250 | && d != DECL_PUBLIC && d != DECL_CONTIGUOUS && d != DECL_NONE) |
4ee9c684 | 5251 | { |
2294b616 | 5252 | if (d == DECL_ALLOCATABLE) |
5253 | { | |
60e19868 | 5254 | if (!gfc_notify_std (GFC_STD_F2003, "ALLOCATABLE " |
5255 | "attribute at %C in a TYPE definition")) | |
2294b616 | 5256 | { |
5257 | m = MATCH_ERROR; | |
5258 | goto cleanup; | |
5259 | } | |
1a9745d2 | 5260 | } |
9d958d5b | 5261 | else if (d == DECL_KIND) |
5262 | { | |
5263 | if (!gfc_notify_std (GFC_STD_F2003, "KIND " | |
5264 | "attribute at %C in a TYPE definition")) | |
5265 | { | |
5266 | m = MATCH_ERROR; | |
5267 | goto cleanup; | |
5268 | } | |
5269 | if (current_ts.type != BT_INTEGER) | |
5270 | { | |
5271 | gfc_error ("Component with KIND attribute at %C must be " | |
5272 | "INTEGER"); | |
5273 | m = MATCH_ERROR; | |
5274 | goto cleanup; | |
5275 | } | |
5276 | if (current_ts.kind != gfc_default_integer_kind) | |
5277 | { | |
5278 | gfc_error ("Component with KIND attribute at %C must be " | |
5279 | "default integer kind (%d)", | |
5280 | gfc_default_integer_kind); | |
5281 | m = MATCH_ERROR; | |
5282 | goto cleanup; | |
5283 | } | |
5284 | } | |
5285 | else if (d == DECL_LEN) | |
5286 | { | |
5287 | if (!gfc_notify_std (GFC_STD_F2003, "LEN " | |
5288 | "attribute at %C in a TYPE definition")) | |
5289 | { | |
5290 | m = MATCH_ERROR; | |
5291 | goto cleanup; | |
5292 | } | |
5293 | if (current_ts.type != BT_INTEGER) | |
5294 | { | |
5295 | gfc_error ("Component with LEN attribute at %C must be " | |
5296 | "INTEGER"); | |
5297 | m = MATCH_ERROR; | |
5298 | goto cleanup; | |
5299 | } | |
5300 | if (current_ts.kind != gfc_default_integer_kind) | |
5301 | { | |
5302 | gfc_error ("Component with LEN attribute at %C must be " | |
5303 | "default integer kind (%d)", | |
5304 | gfc_default_integer_kind); | |
5305 | m = MATCH_ERROR; | |
5306 | goto cleanup; | |
5307 | } | |
5308 | } | |
1a9745d2 | 5309 | else |
2294b616 | 5310 | { |
5311 | gfc_error ("Attribute at %L is not allowed in a TYPE definition", | |
e14bee04 | 5312 | &seen_at[d]); |
2294b616 | 5313 | m = MATCH_ERROR; |
5314 | goto cleanup; | |
5315 | } | |
4ee9c684 | 5316 | } |
5317 | ||
ea13b9b7 | 5318 | if ((d == DECL_PRIVATE || d == DECL_PUBLIC) |
1a9745d2 | 5319 | && gfc_current_state () != COMP_MODULE) |
ea13b9b7 | 5320 | { |
5321 | if (d == DECL_PRIVATE) | |
5322 | attr = "PRIVATE"; | |
5323 | else | |
5324 | attr = "PUBLIC"; | |
e14bee04 | 5325 | if (gfc_current_state () == COMP_DERIVED |
5326 | && gfc_state_stack->previous | |
5327 | && gfc_state_stack->previous->state == COMP_MODULE) | |
5328 | { | |
60e19868 | 5329 | if (!gfc_notify_std (GFC_STD_F2003, "Attribute %s " |
76e207a9 | 5330 | "at %L in a TYPE definition", attr, |
60e19868 | 5331 | &seen_at[d])) |
e14bee04 | 5332 | { |
5333 | m = MATCH_ERROR; | |
5334 | goto cleanup; | |
5335 | } | |
5336 | } | |
5337 | else | |
5338 | { | |
5339 | gfc_error ("%s attribute at %L is not allowed outside of the " | |
5340 | "specification part of a module", attr, &seen_at[d]); | |
5341 | m = MATCH_ERROR; | |
5342 | goto cleanup; | |
5343 | } | |
ea13b9b7 | 5344 | } |
5345 | ||
9d958d5b | 5346 | if (gfc_current_state () != COMP_DERIVED |
5347 | && (d == DECL_KIND || d == DECL_LEN)) | |
5348 | { | |
5349 | gfc_error ("Attribute at %L is not allowed outside a TYPE " | |
5350 | "definition", &seen_at[d]); | |
5351 | m = MATCH_ERROR; | |
5352 | goto cleanup; | |
5353 | } | |
5354 | ||
4ee9c684 | 5355 | switch (d) |
5356 | { | |
5357 | case DECL_ALLOCATABLE: | |
5358 | t = gfc_add_allocatable (¤t_attr, &seen_at[d]); | |
5359 | break; | |
5360 | ||
738928be | 5361 | case DECL_ASYNCHRONOUS: |
60e19868 | 5362 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS attribute at %C")) |
5363 | t = false; | |
738928be | 5364 | else |
5365 | t = gfc_add_asynchronous (¤t_attr, NULL, &seen_at[d]); | |
5366 | break; | |
5367 | ||
aff518b0 | 5368 | case DECL_CODIMENSION: |
5369 | t = gfc_add_codimension (¤t_attr, NULL, &seen_at[d]); | |
5370 | break; | |
5371 | ||
b3c3927c | 5372 | case DECL_CONTIGUOUS: |
60e19868 | 5373 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS attribute at %C")) |
5374 | t = false; | |
b3c3927c | 5375 | else |
5376 | t = gfc_add_contiguous (¤t_attr, NULL, &seen_at[d]); | |
5377 | break; | |
5378 | ||
4ee9c684 | 5379 | case DECL_DIMENSION: |
950683ed | 5380 | t = gfc_add_dimension (¤t_attr, NULL, &seen_at[d]); |
4ee9c684 | 5381 | break; |
5382 | ||
5383 | case DECL_EXTERNAL: | |
5384 | t = gfc_add_external (¤t_attr, &seen_at[d]); | |
5385 | break; | |
5386 | ||
5387 | case DECL_IN: | |
5388 | t = gfc_add_intent (¤t_attr, INTENT_IN, &seen_at[d]); | |
5389 | break; | |
5390 | ||
5391 | case DECL_OUT: | |
5392 | t = gfc_add_intent (¤t_attr, INTENT_OUT, &seen_at[d]); | |
5393 | break; | |
5394 | ||
5395 | case DECL_INOUT: | |
5396 | t = gfc_add_intent (¤t_attr, INTENT_INOUT, &seen_at[d]); | |
5397 | break; | |
5398 | ||
5399 | case DECL_INTRINSIC: | |
5400 | t = gfc_add_intrinsic (¤t_attr, &seen_at[d]); | |
5401 | break; | |
5402 | ||
5403 | case DECL_OPTIONAL: | |
5404 | t = gfc_add_optional (¤t_attr, &seen_at[d]); | |
5405 | break; | |
5406 | ||
9d958d5b | 5407 | case DECL_KIND: |
5408 | t = gfc_add_kind (¤t_attr, &seen_at[d]); | |
5409 | break; | |
5410 | ||
5411 | case DECL_LEN: | |
5412 | t = gfc_add_len (¤t_attr, &seen_at[d]); | |
5413 | break; | |
5414 | ||
4ee9c684 | 5415 | case DECL_PARAMETER: |
950683ed | 5416 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, &seen_at[d]); |
4ee9c684 | 5417 | break; |
5418 | ||
5419 | case DECL_POINTER: | |
5420 | t = gfc_add_pointer (¤t_attr, &seen_at[d]); | |
5421 | break; | |
5422 | ||
3ea52af3 | 5423 | case DECL_PROTECTED: |
8371b2e9 | 5424 | if (gfc_current_state () != COMP_MODULE |
5425 | || (gfc_current_ns->proc_name | |
5426 | && gfc_current_ns->proc_name->attr.flavor != FL_MODULE)) | |
3ea52af3 | 5427 | { |
5428 | gfc_error ("PROTECTED at %C only allowed in specification " | |
5429 | "part of a module"); | |
60e19868 | 5430 | t = false; |
3ea52af3 | 5431 | break; |
5432 | } | |
5433 | ||
60e19868 | 5434 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED attribute at %C")) |
5435 | t = false; | |
3ea52af3 | 5436 | else |
5437 | t = gfc_add_protected (¤t_attr, NULL, &seen_at[d]); | |
5438 | break; | |
5439 | ||
4ee9c684 | 5440 | case DECL_PRIVATE: |
950683ed | 5441 | t = gfc_add_access (¤t_attr, ACCESS_PRIVATE, NULL, |
5442 | &seen_at[d]); | |
4ee9c684 | 5443 | break; |
5444 | ||
5445 | case DECL_PUBLIC: | |
950683ed | 5446 | t = gfc_add_access (¤t_attr, ACCESS_PUBLIC, NULL, |
5447 | &seen_at[d]); | |
4ee9c684 | 5448 | break; |
5449 | ||
8e652fcf | 5450 | case DECL_STATIC: |
4ee9c684 | 5451 | case DECL_SAVE: |
23d075f4 | 5452 | t = gfc_add_save (¤t_attr, SAVE_EXPLICIT, NULL, &seen_at[d]); |
4ee9c684 | 5453 | break; |
5454 | ||
8e652fcf | 5455 | case DECL_AUTOMATIC: |
5456 | t = gfc_add_automatic (¤t_attr, NULL, &seen_at[d]); | |
5457 | break; | |
5458 | ||
4ee9c684 | 5459 | case DECL_TARGET: |
5460 | t = gfc_add_target (¤t_attr, &seen_at[d]); | |
5461 | break; | |
5462 | ||
c5d33754 | 5463 | case DECL_IS_BIND_C: |
5464 | t = gfc_add_is_bind_c(¤t_attr, NULL, &seen_at[d], 0); | |
5465 | break; | |
8db94b3b | 5466 | |
8f6339b6 | 5467 | case DECL_VALUE: |
60e19868 | 5468 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE attribute at %C")) |
5469 | t = false; | |
8f6339b6 | 5470 | else |
5471 | t = gfc_add_value (¤t_attr, NULL, &seen_at[d]); | |
5472 | break; | |
5473 | ||
ef814c81 | 5474 | case DECL_VOLATILE: |
60e19868 | 5475 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE attribute at %C")) |
5476 | t = false; | |
ef814c81 | 5477 | else |
5478 | t = gfc_add_volatile (¤t_attr, NULL, &seen_at[d]); | |
5479 | break; | |
5480 | ||
4ee9c684 | 5481 | default: |
5482 | gfc_internal_error ("match_attr_spec(): Bad attribute"); | |
5483 | } | |
5484 | ||
60e19868 | 5485 | if (!t) |
4ee9c684 | 5486 | { |
5487 | m = MATCH_ERROR; | |
5488 | goto cleanup; | |
5489 | } | |
5490 | } | |
5491 | ||
c25834c9 | 5492 | /* Since Fortran 2008 module variables implicitly have the SAVE attribute. */ |
4b8eb6ca | 5493 | if ((gfc_current_state () == COMP_MODULE |
5494 | || gfc_current_state () == COMP_SUBMODULE) | |
5495 | && !current_attr.save | |
c25834c9 | 5496 | && (gfc_option.allow_std & GFC_STD_F2008) != 0) |
23d075f4 | 5497 | current_attr.save = SAVE_IMPLICIT; |
5498 | ||
4ee9c684 | 5499 | colon_seen = 1; |
5500 | return MATCH_YES; | |
5501 | ||
5502 | cleanup: | |
cbb9e6aa | 5503 | gfc_current_locus = start; |
4ee9c684 | 5504 | gfc_free_array_spec (current_as); |
5505 | current_as = NULL; | |
8ef2cf76 | 5506 | attr_seen = 0; |
4ee9c684 | 5507 | return m; |
5508 | } | |
5509 | ||
5510 | ||
c5d33754 | 5511 | /* Set the binding label, dest_label, either with the binding label |
5512 | stored in the given gfc_typespec, ts, or if none was provided, it | |
5513 | will be the symbol name in all lower case, as required by the draft | |
5514 | (J3/04-007, section 15.4.1). If a binding label was given and | |
5515 | there is more than one argument (num_idents), it is an error. */ | |
5516 | ||
60e19868 | 5517 | static bool |
8db94b3b | 5518 | set_binding_label (const char **dest_label, const char *sym_name, |
1d8a57d8 | 5519 | int num_idents) |
c5d33754 | 5520 | { |
825718f9 | 5521 | if (num_idents > 1 && has_name_equals) |
c5d33754 | 5522 | { |
825718f9 | 5523 | gfc_error ("Multiple identifiers provided with " |
5524 | "single NAME= specifier at %C"); | |
60e19868 | 5525 | return false; |
825718f9 | 5526 | } |
c5d33754 | 5527 | |
7b2060ba | 5528 | if (curr_binding_label) |
df084314 | 5529 | /* Binding label given; store in temp holder till have sym. */ |
7b2060ba | 5530 | *dest_label = curr_binding_label; |
c5d33754 | 5531 | else |
5532 | { | |
5533 | /* No binding label given, and the NAME= specifier did not exist, | |
5534 | which means there was no NAME="". */ | |
5535 | if (sym_name != NULL && has_name_equals == 0) | |
7b2060ba | 5536 | *dest_label = IDENTIFIER_POINTER (get_identifier (sym_name)); |
c5d33754 | 5537 | } |
8db94b3b | 5538 | |
60e19868 | 5539 | return true; |
c5d33754 | 5540 | } |
5541 | ||
5542 | ||
5543 | /* Set the status of the given common block as being BIND(C) or not, | |
5544 | depending on the given parameter, is_bind_c. */ | |
5545 | ||
5546 | void | |
5547 | set_com_block_bind_c (gfc_common_head *com_block, int is_bind_c) | |
5548 | { | |
5549 | com_block->is_bind_c = is_bind_c; | |
5550 | return; | |
5551 | } | |
5552 | ||
5553 | ||
5554 | /* Verify that the given gfc_typespec is for a C interoperable type. */ | |
5555 | ||
60e19868 | 5556 | bool |
2564c57a | 5557 | gfc_verify_c_interop (gfc_typespec *ts) |
c5d33754 | 5558 | { |
eeebe20b | 5559 | if (ts->type == BT_DERIVED && ts->u.derived != NULL) |
5f9b1308 | 5560 | return (ts->u.derived->ts.is_c_interop || ts->u.derived->attr.is_bind_c) |
60e19868 | 5561 | ? true : false; |
2564c57a | 5562 | else if (ts->type == BT_CLASS) |
60e19868 | 5563 | return false; |
8c2d8d6d | 5564 | else if (ts->is_c_interop != 1 && ts->type != BT_ASSUMED) |
60e19868 | 5565 | return false; |
8c2d8d6d | 5566 | |
60e19868 | 5567 | return true; |
c5d33754 | 5568 | } |
5569 | ||
5570 | ||
5571 | /* Verify that the variables of a given common block, which has been | |
5572 | defined with the attribute specifier bind(c), to be of a C | |
5573 | interoperable type. Errors will be reported here, if | |
5574 | encountered. */ | |
5575 | ||
60e19868 | 5576 | bool |
c5d33754 | 5577 | verify_com_block_vars_c_interop (gfc_common_head *com_block) |
5578 | { | |
5579 | gfc_symbol *curr_sym = NULL; | |
60e19868 | 5580 | bool retval = true; |
c5d33754 | 5581 | |
5582 | curr_sym = com_block->head; | |
8db94b3b | 5583 | |
c5d33754 | 5584 | /* Make sure we have at least one symbol. */ |
5585 | if (curr_sym == NULL) | |
5586 | return retval; | |
5587 | ||
5588 | /* Here we know we have a symbol, so we'll execute this loop | |
5589 | at least once. */ | |
5590 | do | |
5591 | { | |
5592 | /* The second to last param, 1, says this is in a common block. */ | |
5593 | retval = verify_bind_c_sym (curr_sym, &(curr_sym->ts), 1, com_block); | |
5594 | curr_sym = curr_sym->common_next; | |
8db94b3b | 5595 | } while (curr_sym != NULL); |
c5d33754 | 5596 | |
5597 | return retval; | |
5598 | } | |
5599 | ||
5600 | ||
5601 | /* Verify that a given BIND(C) symbol is C interoperable. If it is not, | |
5602 | an appropriate error message is reported. */ | |
5603 | ||
60e19868 | 5604 | bool |
c5d33754 | 5605 | verify_bind_c_sym (gfc_symbol *tmp_sym, gfc_typespec *ts, |
5606 | int is_in_common, gfc_common_head *com_block) | |
5607 | { | |
1f2ab120 | 5608 | bool bind_c_function = false; |
60e19868 | 5609 | bool retval = true; |
4f7bb9ec | 5610 | |
1f2ab120 | 5611 | if (tmp_sym->attr.function && tmp_sym->attr.is_bind_c) |
5612 | bind_c_function = true; | |
5613 | ||
4f7bb9ec | 5614 | if (tmp_sym->attr.function && tmp_sym->result != NULL) |
5615 | { | |
5616 | tmp_sym = tmp_sym->result; | |
5617 | /* Make sure it wasn't an implicitly typed result. */ | |
bf79c656 | 5618 | if (tmp_sym->attr.implicit_type && warn_c_binding_type) |
4f7bb9ec | 5619 | { |
4166acc7 | 5620 | gfc_warning (OPT_Wc_binding_type, |
5621 | "Implicitly declared BIND(C) function %qs at " | |
4f7bb9ec | 5622 | "%L may not be C interoperable", tmp_sym->name, |
5623 | &tmp_sym->declared_at); | |
5624 | tmp_sym->ts.f90_type = tmp_sym->ts.type; | |
5625 | /* Mark it as C interoperable to prevent duplicate warnings. */ | |
5626 | tmp_sym->ts.is_c_interop = 1; | |
5627 | tmp_sym->attr.is_c_interop = 1; | |
5628 | } | |
5629 | } | |
1f2ab120 | 5630 | |
c5d33754 | 5631 | /* Here, we know we have the bind(c) attribute, so if we have |
5632 | enough type info, then verify that it's a C interop kind. | |
5633 | The info could be in the symbol already, or possibly still in | |
5634 | the given ts (current_ts), so look in both. */ | |
8db94b3b | 5635 | if (tmp_sym->ts.type != BT_UNKNOWN || ts->type != BT_UNKNOWN) |
c5d33754 | 5636 | { |
60e19868 | 5637 | if (!gfc_verify_c_interop (&(tmp_sym->ts))) |
c5d33754 | 5638 | { |
5639 | /* See if we're dealing with a sym in a common block or not. */ | |
bf79c656 | 5640 | if (is_in_common == 1 && warn_c_binding_type) |
c5d33754 | 5641 | { |
4166acc7 | 5642 | gfc_warning (OPT_Wc_binding_type, |
5643 | "Variable %qs in common block %qs at %L " | |
c5d33754 | 5644 | "may not be a C interoperable " |
4166acc7 | 5645 | "kind though common block %qs is BIND(C)", |
c5d33754 | 5646 | tmp_sym->name, com_block->name, |
5647 | &(tmp_sym->declared_at), com_block->name); | |
5648 | } | |
5649 | else | |
5650 | { | |
5651 | if (tmp_sym->ts.type == BT_DERIVED || ts->type == BT_DERIVED) | |
716da296 | 5652 | gfc_error ("Type declaration %qs at %L is not C " |
c5d33754 | 5653 | "interoperable but it is BIND(C)", |
5654 | tmp_sym->name, &(tmp_sym->declared_at)); | |
bf79c656 | 5655 | else if (warn_c_binding_type) |
4166acc7 | 5656 | gfc_warning (OPT_Wc_binding_type, "Variable %qs at %L " |
c5d33754 | 5657 | "may not be a C interoperable " |
716da296 | 5658 | "kind but it is BIND(C)", |
c5d33754 | 5659 | tmp_sym->name, &(tmp_sym->declared_at)); |
5660 | } | |
5661 | } | |
8db94b3b | 5662 | |
c5d33754 | 5663 | /* Variables declared w/in a common block can't be bind(c) |
5664 | since there's no way for C to see these variables, so there's | |
5665 | semantically no reason for the attribute. */ | |
5666 | if (is_in_common == 1 && tmp_sym->attr.is_bind_c == 1) | |
5667 | { | |
716da296 | 5668 | gfc_error ("Variable %qs in common block %qs at " |
c5d33754 | 5669 | "%L cannot be declared with BIND(C) " |
5670 | "since it is not a global", | |
5671 | tmp_sym->name, com_block->name, | |
5672 | &(tmp_sym->declared_at)); | |
60e19868 | 5673 | retval = false; |
c5d33754 | 5674 | } |
8db94b3b | 5675 | |
c5d33754 | 5676 | /* Scalar variables that are bind(c) can not have the pointer |
5677 | or allocatable attributes. */ | |
5678 | if (tmp_sym->attr.is_bind_c == 1) | |
5679 | { | |
5680 | if (tmp_sym->attr.pointer == 1) | |
5681 | { | |
716da296 | 5682 | gfc_error ("Variable %qs at %L cannot have both the " |
c5d33754 | 5683 | "POINTER and BIND(C) attributes", |
5684 | tmp_sym->name, &(tmp_sym->declared_at)); | |
60e19868 | 5685 | retval = false; |
c5d33754 | 5686 | } |
5687 | ||
5688 | if (tmp_sym->attr.allocatable == 1) | |
5689 | { | |
716da296 | 5690 | gfc_error ("Variable %qs at %L cannot have both the " |
c5d33754 | 5691 | "ALLOCATABLE and BIND(C) attributes", |
5692 | tmp_sym->name, &(tmp_sym->declared_at)); | |
60e19868 | 5693 | retval = false; |
c5d33754 | 5694 | } |
5695 | ||
1f2ab120 | 5696 | } |
5697 | ||
5698 | /* If it is a BIND(C) function, make sure the return value is a | |
5699 | scalar value. The previous tests in this function made sure | |
5700 | the type is interoperable. */ | |
5701 | if (bind_c_function && tmp_sym->as != NULL) | |
716da296 | 5702 | gfc_error ("Return type of BIND(C) function %qs at %L cannot " |
1f2ab120 | 5703 | "be an array", tmp_sym->name, &(tmp_sym->declared_at)); |
5704 | ||
5705 | /* BIND(C) functions can not return a character string. */ | |
5706 | if (bind_c_function && tmp_sym->ts.type == BT_CHARACTER) | |
eeebe20b | 5707 | if (tmp_sym->ts.u.cl == NULL || tmp_sym->ts.u.cl->length == NULL |
5708 | || tmp_sym->ts.u.cl->length->expr_type != EXPR_CONSTANT | |
5709 | || mpz_cmp_si (tmp_sym->ts.u.cl->length->value.integer, 1) != 0) | |
f6c28593 | 5710 | gfc_error ("Return type of BIND(C) function %qs of character " |
c014d57d | 5711 | "type at %L must have length 1", tmp_sym->name, |
c5d33754 | 5712 | &(tmp_sym->declared_at)); |
c5d33754 | 5713 | } |
5714 | ||
5715 | /* See if the symbol has been marked as private. If it has, make sure | |
5716 | there is no binding label and warn the user if there is one. */ | |
5717 | if (tmp_sym->attr.access == ACCESS_PRIVATE | |
7b2060ba | 5718 | && tmp_sym->binding_label) |
c5d33754 | 5719 | /* Use gfc_warning_now because we won't say that the symbol fails |
5720 | just because of this. */ | |
6f521718 | 5721 | gfc_warning_now (0, "Symbol %qs at %L is marked PRIVATE but has been " |
bf79c656 | 5722 | "given the binding label %qs", tmp_sym->name, |
c5d33754 | 5723 | &(tmp_sym->declared_at), tmp_sym->binding_label); |
5724 | ||
5725 | return retval; | |
5726 | } | |
5727 | ||
5728 | ||
5729 | /* Set the appropriate fields for a symbol that's been declared as | |
5730 | BIND(C) (the is_bind_c flag and the binding label), and verify that | |
5731 | the type is C interoperable. Errors are reported by the functions | |
5732 | used to set/test these fields. */ | |
5733 | ||
60e19868 | 5734 | bool |
c5d33754 | 5735 | set_verify_bind_c_sym (gfc_symbol *tmp_sym, int num_idents) |
5736 | { | |
60e19868 | 5737 | bool retval = true; |
8db94b3b | 5738 | |
c5d33754 | 5739 | /* TODO: Do we need to make sure the vars aren't marked private? */ |
5740 | ||
5741 | /* Set the is_bind_c bit in symbol_attribute. */ | |
5742 | gfc_add_is_bind_c (&(tmp_sym->attr), tmp_sym->name, &gfc_current_locus, 0); | |
5743 | ||
60e19868 | 5744 | if (!set_binding_label (&tmp_sym->binding_label, tmp_sym->name, num_idents)) |
5745 | return false; | |
c5d33754 | 5746 | |
5747 | return retval; | |
5748 | } | |
5749 | ||
5750 | ||
5751 | /* Set the fields marking the given common block as BIND(C), including | |
5752 | a binding label, and report any errors encountered. */ | |
5753 | ||
60e19868 | 5754 | bool |
c5d33754 | 5755 | set_verify_bind_c_com_block (gfc_common_head *com_block, int num_idents) |
5756 | { | |
60e19868 | 5757 | bool retval = true; |
8db94b3b | 5758 | |
c5d33754 | 5759 | /* destLabel, common name, typespec (which may have binding label). */ |
76e207a9 | 5760 | if (!set_binding_label (&com_block->binding_label, com_block->name, |
60e19868 | 5761 | num_idents)) |
5762 | return false; | |
c5d33754 | 5763 | |
5764 | /* Set the given common block (com_block) to being bind(c) (1). */ | |
5765 | set_com_block_bind_c (com_block, 1); | |
5766 | ||
5767 | return retval; | |
5768 | } | |
5769 | ||
5770 | ||
5771 | /* Retrieve the list of one or more identifiers that the given bind(c) | |
5772 | attribute applies to. */ | |
5773 | ||
60e19868 | 5774 | bool |
c5d33754 | 5775 | get_bind_c_idents (void) |
5776 | { | |
5777 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5778 | int num_idents = 0; | |
5779 | gfc_symbol *tmp_sym = NULL; | |
5780 | match found_id; | |
5781 | gfc_common_head *com_block = NULL; | |
8db94b3b | 5782 | |
c5d33754 | 5783 | if (gfc_match_name (name) == MATCH_YES) |
5784 | { | |
5785 | found_id = MATCH_YES; | |
5786 | gfc_get_ha_symbol (name, &tmp_sym); | |
5787 | } | |
5788 | else if (match_common_name (name) == MATCH_YES) | |
5789 | { | |
5790 | found_id = MATCH_YES; | |
5791 | com_block = gfc_get_common (name, 0); | |
5792 | } | |
5793 | else | |
5794 | { | |
5795 | gfc_error ("Need either entity or common block name for " | |
5796 | "attribute specification statement at %C"); | |
60e19868 | 5797 | return false; |
c5d33754 | 5798 | } |
8db94b3b | 5799 | |
c5d33754 | 5800 | /* Save the current identifier and look for more. */ |
5801 | do | |
5802 | { | |
5803 | /* Increment the number of identifiers found for this spec stmt. */ | |
5804 | num_idents++; | |
5805 | ||
5806 | /* Make sure we have a sym or com block, and verify that it can | |
5807 | be bind(c). Set the appropriate field(s) and look for more | |
5808 | identifiers. */ | |
8db94b3b | 5809 | if (tmp_sym != NULL || com_block != NULL) |
c5d33754 | 5810 | { |
5811 | if (tmp_sym != NULL) | |
5812 | { | |
60e19868 | 5813 | if (!set_verify_bind_c_sym (tmp_sym, num_idents)) |
5814 | return false; | |
c5d33754 | 5815 | } |
5816 | else | |
5817 | { | |
60e19868 | 5818 | if (!set_verify_bind_c_com_block (com_block, num_idents)) |
5819 | return false; | |
c5d33754 | 5820 | } |
8db94b3b | 5821 | |
c5d33754 | 5822 | /* Look to see if we have another identifier. */ |
5823 | tmp_sym = NULL; | |
5824 | if (gfc_match_eos () == MATCH_YES) | |
5825 | found_id = MATCH_NO; | |
5826 | else if (gfc_match_char (',') != MATCH_YES) | |
5827 | found_id = MATCH_NO; | |
5828 | else if (gfc_match_name (name) == MATCH_YES) | |
5829 | { | |
5830 | found_id = MATCH_YES; | |
5831 | gfc_get_ha_symbol (name, &tmp_sym); | |
5832 | } | |
5833 | else if (match_common_name (name) == MATCH_YES) | |
5834 | { | |
5835 | found_id = MATCH_YES; | |
5836 | com_block = gfc_get_common (name, 0); | |
5837 | } | |
5838 | else | |
5839 | { | |
5840 | gfc_error ("Missing entity or common block name for " | |
5841 | "attribute specification statement at %C"); | |
60e19868 | 5842 | return false; |
c5d33754 | 5843 | } |
5844 | } | |
5845 | else | |
5846 | { | |
5847 | gfc_internal_error ("Missing symbol"); | |
5848 | } | |
5849 | } while (found_id == MATCH_YES); | |
5850 | ||
5851 | /* if we get here we were successful */ | |
60e19868 | 5852 | return true; |
c5d33754 | 5853 | } |
5854 | ||
5855 | ||
5856 | /* Try and match a BIND(C) attribute specification statement. */ | |
8db94b3b | 5857 | |
c5d33754 | 5858 | match |
5859 | gfc_match_bind_c_stmt (void) | |
5860 | { | |
5861 | match found_match = MATCH_NO; | |
5862 | gfc_typespec *ts; | |
5863 | ||
5864 | ts = ¤t_ts; | |
8db94b3b | 5865 | |
c5d33754 | 5866 | /* This may not be necessary. */ |
5867 | gfc_clear_ts (ts); | |
5868 | /* Clear the temporary binding label holder. */ | |
7b2060ba | 5869 | curr_binding_label = NULL; |
c5d33754 | 5870 | |
5871 | /* Look for the bind(c). */ | |
75ae7f6c | 5872 | found_match = gfc_match_bind_c (NULL, true); |
c5d33754 | 5873 | |
5874 | if (found_match == MATCH_YES) | |
5875 | { | |
7a914593 | 5876 | if (!gfc_notify_std (GFC_STD_F2003, "BIND(C) statement at %C")) |
5877 | return MATCH_ERROR; | |
5878 | ||
c5d33754 | 5879 | /* Look for the :: now, but it is not required. */ |
5880 | gfc_match (" :: "); | |
5881 | ||
5882 | /* Get the identifier(s) that needs to be updated. This may need to | |
5883 | change to hand the flag(s) for the attr specified so all identifiers | |
5884 | found can have all appropriate parts updated (assuming that the same | |
5885 | spec stmt can have multiple attrs, such as both bind(c) and | |
5886 | allocatable...). */ | |
60e19868 | 5887 | if (!get_bind_c_idents ()) |
c5d33754 | 5888 | /* Error message should have printed already. */ |
5889 | return MATCH_ERROR; | |
5890 | } | |
5891 | ||
5892 | return found_match; | |
5893 | } | |
5894 | ||
5895 | ||
4ee9c684 | 5896 | /* Match a data declaration statement. */ |
5897 | ||
5898 | match | |
5899 | gfc_match_data_decl (void) | |
5900 | { | |
5901 | gfc_symbol *sym; | |
5902 | match m; | |
3923b69f | 5903 | int elem; |
4ee9c684 | 5904 | |
9d958d5b | 5905 | type_param_spec_list = NULL; |
5906 | decl_type_param_list = NULL; | |
5907 | ||
c5d33754 | 5908 | num_idents_on_line = 0; |
8db94b3b | 5909 | |
e8152f13 | 5910 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
4ee9c684 | 5911 | if (m != MATCH_YES) |
5912 | return m; | |
5913 | ||
b3704193 | 5914 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
d7cd448a | 5915 | && !gfc_comp_struct (gfc_current_state ())) |
4ee9c684 | 5916 | { |
eeebe20b | 5917 | sym = gfc_use_derived (current_ts.u.derived); |
4ee9c684 | 5918 | |
5919 | if (sym == NULL) | |
5920 | { | |
5921 | m = MATCH_ERROR; | |
5922 | goto cleanup; | |
5923 | } | |
5924 | ||
eeebe20b | 5925 | current_ts.u.derived = sym; |
4ee9c684 | 5926 | } |
5927 | ||
5928 | m = match_attr_spec (); | |
5929 | if (m == MATCH_ERROR) | |
5930 | { | |
5931 | m = MATCH_NO; | |
5932 | goto cleanup; | |
5933 | } | |
5934 | ||
a90fe829 | 5935 | if (current_ts.type == BT_CLASS |
5936 | && current_ts.u.derived->attr.unlimited_polymorphic) | |
5937 | goto ok; | |
5938 | ||
b3704193 | 5939 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
5940 | && current_ts.u.derived->components == NULL | |
eeebe20b | 5941 | && !current_ts.u.derived->attr.zero_comp) |
4ee9c684 | 5942 | { |
5943 | ||
d7cd448a | 5944 | if (current_attr.pointer && gfc_comp_struct (gfc_current_state ())) |
4ee9c684 | 5945 | goto ok; |
5946 | ||
2fbfb5cf | 5947 | if (current_attr.allocatable && gfc_current_state () == COMP_DERIVED) |
dd7553fe | 5948 | goto ok; |
5949 | ||
eeebe20b | 5950 | gfc_find_symbol (current_ts.u.derived->name, |
d67dd34f | 5951 | current_ts.u.derived->ns, 1, &sym); |
4ee9c684 | 5952 | |
40cf8078 | 5953 | /* Any symbol that we find had better be a type definition |
d7cd448a | 5954 | which has its components defined, or be a structure definition |
5955 | actively being parsed. */ | |
5956 | if (sym != NULL && gfc_fl_struct (sym->attr.flavor) | |
eeebe20b | 5957 | && (current_ts.u.derived->components != NULL |
d7cd448a | 5958 | || current_ts.u.derived->attr.zero_comp |
5959 | || current_ts.u.derived == gfc_new_block)) | |
4ee9c684 | 5960 | goto ok; |
5961 | ||
a1e76cd9 | 5962 | gfc_error ("Derived type at %C has not been previously defined " |
5963 | "and so cannot appear in a derived type definition"); | |
5964 | m = MATCH_ERROR; | |
5965 | goto cleanup; | |
4ee9c684 | 5966 | } |
5967 | ||
5968 | ok: | |
5969 | /* If we have an old-style character declaration, and no new-style | |
5970 | attribute specifications, then there a comma is optional between | |
5971 | the type specification and the variable list. */ | |
5972 | if (m == MATCH_NO && current_ts.type == BT_CHARACTER && old_char_selector) | |
5973 | gfc_match_char (','); | |
5974 | ||
3923b69f | 5975 | /* Give the types/attributes to symbols that follow. Give the element |
5976 | a number so that repeat character length expressions can be copied. */ | |
5977 | elem = 1; | |
4ee9c684 | 5978 | for (;;) |
5979 | { | |
c5d33754 | 5980 | num_idents_on_line++; |
3923b69f | 5981 | m = variable_decl (elem++); |
4ee9c684 | 5982 | if (m == MATCH_ERROR) |
5983 | goto cleanup; | |
5984 | if (m == MATCH_NO) | |
5985 | break; | |
5986 | ||
5987 | if (gfc_match_eos () == MATCH_YES) | |
5988 | goto cleanup; | |
5989 | if (gfc_match_char (',') != MATCH_YES) | |
5990 | break; | |
5991 | } | |
5992 | ||
389e3a5e | 5993 | if (!gfc_error_flag_test ()) |
c717a688 | 5994 | { |
5995 | /* An anonymous structure declaration is unambiguous; if we matched one | |
5996 | according to gfc_match_structure_decl, we need to return MATCH_YES | |
5997 | here to avoid confusing the remaining matchers, even if there was an | |
5998 | error during variable_decl. We must flush any such errors. Note this | |
5999 | causes the parser to gracefully continue parsing the remaining input | |
6000 | as a structure body, which likely follows. */ | |
6001 | if (current_ts.type == BT_DERIVED && current_ts.u.derived | |
6002 | && gfc_fl_struct (current_ts.u.derived->attr.flavor)) | |
6003 | { | |
6004 | gfc_error_now ("Syntax error in anonymous structure declaration" | |
6005 | " at %C"); | |
6006 | /* Skip the bad variable_decl and line up for the start of the | |
6007 | structure body. */ | |
6008 | gfc_error_recovery (); | |
6009 | m = MATCH_YES; | |
6010 | goto cleanup; | |
6011 | } | |
6012 | ||
6013 | gfc_error ("Syntax error in data declaration at %C"); | |
6014 | } | |
6015 | ||
4ee9c684 | 6016 | m = MATCH_ERROR; |
6017 | ||
af29c1f0 | 6018 | gfc_free_data_all (gfc_current_ns); |
6019 | ||
4ee9c684 | 6020 | cleanup: |
9d958d5b | 6021 | if (saved_kind_expr) |
6022 | gfc_free_expr (saved_kind_expr); | |
6023 | if (type_param_spec_list) | |
6024 | gfc_free_actual_arglist (type_param_spec_list); | |
6025 | if (decl_type_param_list) | |
6026 | gfc_free_actual_arglist (decl_type_param_list); | |
6027 | saved_kind_expr = NULL; | |
4ee9c684 | 6028 | gfc_free_array_spec (current_as); |
6029 | current_as = NULL; | |
6030 | return m; | |
6031 | } | |
6032 | ||
6033 | ||
6034 | /* Match a prefix associated with a function or subroutine | |
6035 | declaration. If the typespec pointer is nonnull, then a typespec | |
6036 | can be matched. Note that if nothing matches, MATCH_YES is | |
6037 | returned (the null string was matched). */ | |
6038 | ||
077932f9 | 6039 | match |
6040 | gfc_match_prefix (gfc_typespec *ts) | |
4ee9c684 | 6041 | { |
5b11d932 | 6042 | bool seen_type; |
4e4ea00b | 6043 | bool seen_impure; |
6044 | bool found_prefix; | |
4ee9c684 | 6045 | |
6046 | gfc_clear_attr (¤t_attr); | |
4e4ea00b | 6047 | seen_type = false; |
6048 | seen_impure = false; | |
4ee9c684 | 6049 | |
d1645c7b | 6050 | gcc_assert (!gfc_matching_prefix); |
6051 | gfc_matching_prefix = true; | |
40de255b | 6052 | |
4e4ea00b | 6053 | do |
4ee9c684 | 6054 | { |
4e4ea00b | 6055 | found_prefix = false; |
4ee9c684 | 6056 | |
76e207a9 | 6057 | /* MODULE is a prefix like PURE, ELEMENTAL, etc., having a |
6058 | corresponding attribute seems natural and distinguishes these | |
6059 | procedures from procedure types of PROC_MODULE, which these are | |
6060 | as well. */ | |
6061 | if (gfc_match ("module% ") == MATCH_YES) | |
6062 | { | |
6063 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE prefix at %C")) | |
6064 | goto error; | |
6065 | ||
6066 | current_attr.module_procedure = 1; | |
6067 | found_prefix = true; | |
6068 | } | |
6069 | ||
4e4ea00b | 6070 | if (!seen_type && ts != NULL |
6071 | && gfc_match_decl_type_spec (ts, 0) == MATCH_YES | |
6072 | && gfc_match_space () == MATCH_YES) | |
6073 | { | |
4ee9c684 | 6074 | |
4e4ea00b | 6075 | seen_type = true; |
6076 | found_prefix = true; | |
6077 | } | |
6078 | ||
6079 | if (gfc_match ("elemental% ") == MATCH_YES) | |
6080 | { | |
60e19868 | 6081 | if (!gfc_add_elemental (¤t_attr, NULL)) |
4e4ea00b | 6082 | goto error; |
6083 | ||
6084 | found_prefix = true; | |
6085 | } | |
6086 | ||
6087 | if (gfc_match ("pure% ") == MATCH_YES) | |
6088 | { | |
60e19868 | 6089 | if (!gfc_add_pure (¤t_attr, NULL)) |
4e4ea00b | 6090 | goto error; |
6091 | ||
6092 | found_prefix = true; | |
6093 | } | |
4ee9c684 | 6094 | |
4e4ea00b | 6095 | if (gfc_match ("recursive% ") == MATCH_YES) |
6096 | { | |
60e19868 | 6097 | if (!gfc_add_recursive (¤t_attr, NULL)) |
4e4ea00b | 6098 | goto error; |
6099 | ||
6100 | found_prefix = true; | |
6101 | } | |
6102 | ||
6103 | /* IMPURE is a somewhat special case, as it needs not set an actual | |
6104 | attribute but rather only prevents ELEMENTAL routines from being | |
6105 | automatically PURE. */ | |
6106 | if (gfc_match ("impure% ") == MATCH_YES) | |
6107 | { | |
60e19868 | 6108 | if (!gfc_notify_std (GFC_STD_F2008, "IMPURE procedure at %C")) |
4e4ea00b | 6109 | goto error; |
6110 | ||
6111 | seen_impure = true; | |
6112 | found_prefix = true; | |
6113 | } | |
4ee9c684 | 6114 | } |
4e4ea00b | 6115 | while (found_prefix); |
4ee9c684 | 6116 | |
4e4ea00b | 6117 | /* IMPURE and PURE must not both appear, of course. */ |
6118 | if (seen_impure && current_attr.pure) | |
4ee9c684 | 6119 | { |
4e4ea00b | 6120 | gfc_error ("PURE and IMPURE must not appear both at %C"); |
6121 | goto error; | |
4ee9c684 | 6122 | } |
6123 | ||
4e4ea00b | 6124 | /* If IMPURE it not seen but the procedure is ELEMENTAL, mark it as PURE. */ |
6125 | if (!seen_impure && current_attr.elemental && !current_attr.pure) | |
4ee9c684 | 6126 | { |
60e19868 | 6127 | if (!gfc_add_pure (¤t_attr, NULL)) |
40de255b | 6128 | goto error; |
4ee9c684 | 6129 | } |
6130 | ||
6131 | /* At this point, the next item is not a prefix. */ | |
d1645c7b | 6132 | gcc_assert (gfc_matching_prefix); |
4b8eb6ca | 6133 | |
d1645c7b | 6134 | gfc_matching_prefix = false; |
4ee9c684 | 6135 | return MATCH_YES; |
40de255b | 6136 | |
6137 | error: | |
d1645c7b | 6138 | gcc_assert (gfc_matching_prefix); |
6139 | gfc_matching_prefix = false; | |
40de255b | 6140 | return MATCH_ERROR; |
4ee9c684 | 6141 | } |
6142 | ||
6143 | ||
077932f9 | 6144 | /* Copy attributes matched by gfc_match_prefix() to attributes on a symbol. */ |
4ee9c684 | 6145 | |
60e19868 | 6146 | static bool |
1a9745d2 | 6147 | copy_prefix (symbol_attribute *dest, locus *where) |
4ee9c684 | 6148 | { |
7d7125df | 6149 | if (dest->module_procedure) |
6150 | { | |
6151 | if (current_attr.elemental) | |
6152 | dest->elemental = 1; | |
6153 | ||
6154 | if (current_attr.pure) | |
6155 | dest->pure = 1; | |
6156 | ||
6157 | if (current_attr.recursive) | |
6158 | dest->recursive = 1; | |
6159 | ||
6160 | /* Module procedures are unusual in that the 'dest' is copied from | |
6161 | the interface declaration. However, this is an oportunity to | |
6162 | check that the submodule declaration is compliant with the | |
6163 | interface. */ | |
6164 | if (dest->elemental && !current_attr.elemental) | |
6165 | { | |
6166 | gfc_error ("ELEMENTAL prefix in MODULE PROCEDURE interface is " | |
6167 | "missing at %L", where); | |
6168 | return false; | |
6169 | } | |
6170 | ||
6171 | if (dest->pure && !current_attr.pure) | |
6172 | { | |
6173 | gfc_error ("PURE prefix in MODULE PROCEDURE interface is " | |
6174 | "missing at %L", where); | |
6175 | return false; | |
6176 | } | |
6177 | ||
6178 | if (dest->recursive && !current_attr.recursive) | |
6179 | { | |
6180 | gfc_error ("RECURSIVE prefix in MODULE PROCEDURE interface is " | |
6181 | "missing at %L", where); | |
6182 | return false; | |
6183 | } | |
6184 | ||
6185 | return true; | |
6186 | } | |
4ee9c684 | 6187 | |
60e19868 | 6188 | if (current_attr.elemental && !gfc_add_elemental (dest, where)) |
6189 | return false; | |
4ee9c684 | 6190 | |
7d7125df | 6191 | if (current_attr.pure && !gfc_add_pure (dest, where)) |
6192 | return false; | |
6193 | ||
60e19868 | 6194 | if (current_attr.recursive && !gfc_add_recursive (dest, where)) |
6195 | return false; | |
4ee9c684 | 6196 | |
60e19868 | 6197 | return true; |
4ee9c684 | 6198 | } |
6199 | ||
6200 | ||
9d958d5b | 6201 | /* Match a formal argument list or, if typeparam is true, a |
6202 | type_param_name_list. */ | |
4ee9c684 | 6203 | |
6204 | match | |
9d958d5b | 6205 | gfc_match_formal_arglist (gfc_symbol *progname, int st_flag, |
6206 | int null_flag, bool typeparam) | |
4ee9c684 | 6207 | { |
6208 | gfc_formal_arglist *head, *tail, *p, *q; | |
6209 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6210 | gfc_symbol *sym; | |
6211 | match m; | |
4b8eb6ca | 6212 | gfc_formal_arglist *formal = NULL; |
4ee9c684 | 6213 | |
6214 | head = tail = NULL; | |
6215 | ||
4b8eb6ca | 6216 | /* Keep the interface formal argument list and null it so that the |
6217 | matching for the new declaration can be done. The numbers and | |
6218 | names of the arguments are checked here. The interface formal | |
6219 | arguments are retained in formal_arglist and the characteristics | |
6220 | are compared in resolve.c(resolve_fl_procedure). See the remark | |
6221 | in get_proc_name about the eventual need to copy the formal_arglist | |
6222 | and populate the formal namespace of the interface symbol. */ | |
6223 | if (progname->attr.module_procedure | |
6224 | && progname->attr.host_assoc) | |
6225 | { | |
6226 | formal = progname->formal; | |
6227 | progname->formal = NULL; | |
6228 | } | |
6229 | ||
4ee9c684 | 6230 | if (gfc_match_char ('(') != MATCH_YES) |
6231 | { | |
6232 | if (null_flag) | |
6233 | goto ok; | |
6234 | return MATCH_NO; | |
6235 | } | |
6236 | ||
6237 | if (gfc_match_char (')') == MATCH_YES) | |
6238 | goto ok; | |
6239 | ||
6240 | for (;;) | |
6241 | { | |
6242 | if (gfc_match_char ('*') == MATCH_YES) | |
a5d831e5 | 6243 | { |
6244 | sym = NULL; | |
f0efd2e8 | 6245 | if (!typeparam && !gfc_notify_std (GFC_STD_F95_OBS, |
6246 | "Alternate-return argument at %C")) | |
a5d831e5 | 6247 | { |
6248 | m = MATCH_ERROR; | |
6249 | goto cleanup; | |
6250 | } | |
f0efd2e8 | 6251 | else if (typeparam) |
6252 | gfc_error_now ("A parameter name is required at %C"); | |
a5d831e5 | 6253 | } |
4ee9c684 | 6254 | else |
6255 | { | |
6256 | m = gfc_match_name (name); | |
6257 | if (m != MATCH_YES) | |
f0efd2e8 | 6258 | { |
6259 | if(typeparam) | |
6260 | gfc_error_now ("A parameter name is required at %C"); | |
6261 | goto cleanup; | |
6262 | } | |
4ee9c684 | 6263 | |
9d958d5b | 6264 | if (!typeparam && gfc_get_symbol (name, NULL, &sym)) |
6265 | goto cleanup; | |
6266 | else if (typeparam | |
6267 | && gfc_get_symbol (name, progname->f2k_derived, &sym)) | |
4ee9c684 | 6268 | goto cleanup; |
6269 | } | |
6270 | ||
6271 | p = gfc_get_formal_arglist (); | |
6272 | ||
6273 | if (head == NULL) | |
6274 | head = tail = p; | |
6275 | else | |
6276 | { | |
6277 | tail->next = p; | |
6278 | tail = p; | |
6279 | } | |
6280 | ||
6281 | tail->sym = sym; | |
6282 | ||
6283 | /* We don't add the VARIABLE flavor because the name could be a | |
1a9745d2 | 6284 | dummy procedure. We don't apply these attributes to formal |
6285 | arguments of statement functions. */ | |
4ee9c684 | 6286 | if (sym != NULL && !st_flag |
60e19868 | 6287 | && (!gfc_add_dummy(&sym->attr, sym->name, NULL) |
6288 | || !gfc_missing_attr (&sym->attr, NULL))) | |
4ee9c684 | 6289 | { |
6290 | m = MATCH_ERROR; | |
6291 | goto cleanup; | |
6292 | } | |
6293 | ||
6294 | /* The name of a program unit can be in a different namespace, | |
1a9745d2 | 6295 | so check for it explicitly. After the statement is accepted, |
6296 | the name is checked for especially in gfc_get_symbol(). */ | |
1148eb54 | 6297 | if (gfc_new_block != NULL && sym != NULL && !typeparam |
4ee9c684 | 6298 | && strcmp (sym->name, gfc_new_block->name) == 0) |
6299 | { | |
716da296 | 6300 | gfc_error ("Name %qs at %C is the name of the procedure", |
4ee9c684 | 6301 | sym->name); |
6302 | m = MATCH_ERROR; | |
6303 | goto cleanup; | |
6304 | } | |
6305 | ||
6306 | if (gfc_match_char (')') == MATCH_YES) | |
6307 | goto ok; | |
6308 | ||
6309 | m = gfc_match_char (','); | |
6310 | if (m != MATCH_YES) | |
6311 | { | |
1148eb54 | 6312 | if (typeparam) |
6313 | gfc_error_now ("Expected parameter list in type declaration " | |
6314 | "at %C"); | |
6315 | else | |
6316 | gfc_error ("Unexpected junk in formal argument list at %C"); | |
4ee9c684 | 6317 | goto cleanup; |
6318 | } | |
6319 | } | |
6320 | ||
6321 | ok: | |
6322 | /* Check for duplicate symbols in the formal argument list. */ | |
6323 | if (head != NULL) | |
6324 | { | |
6325 | for (p = head; p->next; p = p->next) | |
6326 | { | |
6327 | if (p->sym == NULL) | |
6328 | continue; | |
6329 | ||
6330 | for (q = p->next; q; q = q->next) | |
6331 | if (p->sym == q->sym) | |
6332 | { | |
1148eb54 | 6333 | if (typeparam) |
6334 | gfc_error_now ("Duplicate name %qs in parameter " | |
6335 | "list at %C", p->sym->name); | |
6336 | else | |
6337 | gfc_error ("Duplicate symbol %qs in formal argument " | |
6338 | "list at %C", p->sym->name); | |
4ee9c684 | 6339 | |
6340 | m = MATCH_ERROR; | |
6341 | goto cleanup; | |
6342 | } | |
6343 | } | |
6344 | } | |
6345 | ||
60e19868 | 6346 | if (!gfc_add_explicit_interface (progname, IFSRC_DECL, head, NULL)) |
4ee9c684 | 6347 | { |
6348 | m = MATCH_ERROR; | |
6349 | goto cleanup; | |
6350 | } | |
6351 | ||
cc78610f | 6352 | /* gfc_error_now used in following and return with MATCH_YES because |
6353 | doing otherwise results in a cascade of extraneous errors and in | |
6354 | some cases an ICE in symbol.c(gfc_release_symbol). */ | |
a23f57e2 | 6355 | if (progname->attr.module_procedure && progname->attr.host_assoc) |
4b8eb6ca | 6356 | { |
a23f57e2 | 6357 | bool arg_count_mismatch = false; |
6358 | ||
6359 | if (!formal && head) | |
6360 | arg_count_mismatch = true; | |
6361 | ||
6362 | /* Abbreviated module procedure declaration is not meant to have any | |
6363 | formal arguments! */ | |
cc78610f | 6364 | if (!progname->abr_modproc_decl && formal && !head) |
a23f57e2 | 6365 | arg_count_mismatch = true; |
6366 | ||
4b8eb6ca | 6367 | for (p = formal, q = head; p && q; p = p->next, q = q->next) |
6368 | { | |
6369 | if ((p->next != NULL && q->next == NULL) | |
6370 | || (p->next == NULL && q->next != NULL)) | |
a23f57e2 | 6371 | arg_count_mismatch = true; |
4b8eb6ca | 6372 | else if ((p->sym == NULL && q->sym == NULL) |
6373 | || strcmp (p->sym->name, q->sym->name) == 0) | |
6374 | continue; | |
6375 | else | |
6376 | gfc_error_now ("Mismatch in MODULE PROCEDURE formal " | |
6377 | "argument names (%s/%s) at %C", | |
6378 | p->sym->name, q->sym->name); | |
6379 | } | |
a23f57e2 | 6380 | |
6381 | if (arg_count_mismatch) | |
6382 | gfc_error_now ("Mismatch in number of MODULE PROCEDURE " | |
6383 | "formal arguments at %C"); | |
4b8eb6ca | 6384 | } |
6385 | ||
4ee9c684 | 6386 | return MATCH_YES; |
6387 | ||
6388 | cleanup: | |
6389 | gfc_free_formal_arglist (head); | |
6390 | return m; | |
6391 | } | |
6392 | ||
6393 | ||
6394 | /* Match a RESULT specification following a function declaration or | |
6395 | ENTRY statement. Also matches the end-of-statement. */ | |
6396 | ||
6397 | static match | |
f6d0e37a | 6398 | match_result (gfc_symbol *function, gfc_symbol **result) |
4ee9c684 | 6399 | { |
6400 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6401 | gfc_symbol *r; | |
6402 | match m; | |
6403 | ||
6404 | if (gfc_match (" result (") != MATCH_YES) | |
6405 | return MATCH_NO; | |
6406 | ||
6407 | m = gfc_match_name (name); | |
6408 | if (m != MATCH_YES) | |
6409 | return m; | |
6410 | ||
c5d33754 | 6411 | /* Get the right paren, and that's it because there could be the |
6412 | bind(c) attribute after the result clause. */ | |
60e19868 | 6413 | if (gfc_match_char (')') != MATCH_YES) |
4ee9c684 | 6414 | { |
c5d33754 | 6415 | /* TODO: should report the missing right paren here. */ |
4ee9c684 | 6416 | return MATCH_ERROR; |
6417 | } | |
6418 | ||
6419 | if (strcmp (function->name, name) == 0) | |
6420 | { | |
1a9745d2 | 6421 | gfc_error ("RESULT variable at %C must be different than function name"); |
4ee9c684 | 6422 | return MATCH_ERROR; |
6423 | } | |
6424 | ||
6425 | if (gfc_get_symbol (name, NULL, &r)) | |
6426 | return MATCH_ERROR; | |
6427 | ||
60e19868 | 6428 | if (!gfc_add_result (&r->attr, r->name, NULL)) |
4ee9c684 | 6429 | return MATCH_ERROR; |
6430 | ||
6431 | *result = r; | |
6432 | ||
6433 | return MATCH_YES; | |
6434 | } | |
6435 | ||
6436 | ||
c5d33754 | 6437 | /* Match a function suffix, which could be a combination of a result |
6438 | clause and BIND(C), either one, or neither. The draft does not | |
6439 | require them to come in a specific order. */ | |
6440 | ||
6441 | match | |
6442 | gfc_match_suffix (gfc_symbol *sym, gfc_symbol **result) | |
6443 | { | |
6444 | match is_bind_c; /* Found bind(c). */ | |
6445 | match is_result; /* Found result clause. */ | |
6446 | match found_match; /* Status of whether we've found a good match. */ | |
e0be6f02 | 6447 | char peek_char; /* Character we're going to peek at. */ |
75ae7f6c | 6448 | bool allow_binding_name; |
c5d33754 | 6449 | |
6450 | /* Initialize to having found nothing. */ | |
6451 | found_match = MATCH_NO; | |
8db94b3b | 6452 | is_bind_c = MATCH_NO; |
c5d33754 | 6453 | is_result = MATCH_NO; |
6454 | ||
6455 | /* Get the next char to narrow between result and bind(c). */ | |
6456 | gfc_gobble_whitespace (); | |
e0be6f02 | 6457 | peek_char = gfc_peek_ascii_char (); |
c5d33754 | 6458 | |
75ae7f6c | 6459 | /* C binding names are not allowed for internal procedures. */ |
6460 | if (gfc_current_state () == COMP_CONTAINS | |
6461 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
6462 | allow_binding_name = false; | |
6463 | else | |
6464 | allow_binding_name = true; | |
6465 | ||
c5d33754 | 6466 | switch (peek_char) |
6467 | { | |
6468 | case 'r': | |
6469 | /* Look for result clause. */ | |
6470 | is_result = match_result (sym, result); | |
6471 | if (is_result == MATCH_YES) | |
6472 | { | |
6473 | /* Now see if there is a bind(c) after it. */ | |
75ae7f6c | 6474 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
c5d33754 | 6475 | /* We've found the result clause and possibly bind(c). */ |
6476 | found_match = MATCH_YES; | |
6477 | } | |
6478 | else | |
6479 | /* This should only be MATCH_ERROR. */ | |
8db94b3b | 6480 | found_match = is_result; |
c5d33754 | 6481 | break; |
6482 | case 'b': | |
6483 | /* Look for bind(c) first. */ | |
75ae7f6c | 6484 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
c5d33754 | 6485 | if (is_bind_c == MATCH_YES) |
6486 | { | |
6487 | /* Now see if a result clause followed it. */ | |
6488 | is_result = match_result (sym, result); | |
6489 | found_match = MATCH_YES; | |
6490 | } | |
6491 | else | |
6492 | { | |
6493 | /* Should only be a MATCH_ERROR if we get here after seeing 'b'. */ | |
6494 | found_match = MATCH_ERROR; | |
6495 | } | |
6496 | break; | |
6497 | default: | |
6498 | gfc_error ("Unexpected junk after function declaration at %C"); | |
6499 | found_match = MATCH_ERROR; | |
6500 | break; | |
6501 | } | |
6502 | ||
c5d33754 | 6503 | if (is_bind_c == MATCH_YES) |
4518e961 | 6504 | { |
75ae7f6c | 6505 | /* Fortran 2008 draft allows BIND(C) for internal procedures. */ |
4518e961 | 6506 | if (gfc_current_state () == COMP_CONTAINS |
75ae7f6c | 6507 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
60e19868 | 6508 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
6509 | "at %L may not be specified for an internal " | |
6510 | "procedure", &gfc_current_locus)) | |
75ae7f6c | 6511 | return MATCH_ERROR; |
6512 | ||
60e19868 | 6513 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, &gfc_current_locus, 1)) |
4518e961 | 6514 | return MATCH_ERROR; |
6515 | } | |
8db94b3b | 6516 | |
c5d33754 | 6517 | return found_match; |
6518 | } | |
6519 | ||
6520 | ||
1e057e9b | 6521 | /* Procedure pointer return value without RESULT statement: |
6522 | Add "hidden" result variable named "ppr@". */ | |
6523 | ||
60e19868 | 6524 | static bool |
1e057e9b | 6525 | add_hidden_procptr_result (gfc_symbol *sym) |
6526 | { | |
6527 | bool case1,case2; | |
6528 | ||
6529 | if (gfc_notification_std (GFC_STD_F2003) == ERROR) | |
60e19868 | 6530 | return false; |
1e057e9b | 6531 | |
6532 | /* First usage case: PROCEDURE and EXTERNAL statements. */ | |
6533 | case1 = gfc_current_state () == COMP_FUNCTION && gfc_current_block () | |
6534 | && strcmp (gfc_current_block ()->name, sym->name) == 0 | |
6535 | && sym->attr.external; | |
6536 | /* Second usage case: INTERFACE statements. */ | |
6537 | case2 = gfc_current_state () == COMP_INTERFACE && gfc_state_stack->previous | |
6538 | && gfc_state_stack->previous->state == COMP_FUNCTION | |
6539 | && strcmp (gfc_state_stack->previous->sym->name, sym->name) == 0; | |
6540 | ||
6541 | if (case1 || case2) | |
6542 | { | |
6543 | gfc_symtree *stree; | |
6544 | if (case1) | |
36b0a1b0 | 6545 | gfc_get_sym_tree ("ppr@", gfc_current_ns, &stree, false); |
f8e5c21b | 6546 | else |
180a5dc0 | 6547 | { |
6548 | gfc_symtree *st2; | |
36b0a1b0 | 6549 | gfc_get_sym_tree ("ppr@", gfc_current_ns->parent, &stree, false); |
180a5dc0 | 6550 | st2 = gfc_new_symtree (&gfc_current_ns->sym_root, "ppr@"); |
6551 | st2->n.sym = stree->n.sym; | |
35ae89b7 | 6552 | stree->n.sym->refs++; |
180a5dc0 | 6553 | } |
1e057e9b | 6554 | sym->result = stree->n.sym; |
6555 | ||
6556 | sym->result->attr.proc_pointer = sym->attr.proc_pointer; | |
6557 | sym->result->attr.pointer = sym->attr.pointer; | |
6558 | sym->result->attr.external = sym->attr.external; | |
6559 | sym->result->attr.referenced = sym->attr.referenced; | |
e40ac2fe | 6560 | sym->result->ts = sym->ts; |
1e057e9b | 6561 | sym->attr.proc_pointer = 0; |
6562 | sym->attr.pointer = 0; | |
6563 | sym->attr.external = 0; | |
6564 | if (sym->result->attr.external && sym->result->attr.pointer) | |
6565 | { | |
6566 | sym->result->attr.pointer = 0; | |
6567 | sym->result->attr.proc_pointer = 1; | |
6568 | } | |
6569 | ||
6570 | return gfc_add_result (&sym->result->attr, sym->result->name, NULL); | |
6571 | } | |
6572 | /* POINTER after PROCEDURE/EXTERNAL/INTERFACE statement. */ | |
6573 | else if (sym->attr.function && !sym->attr.external && sym->attr.pointer | |
6574 | && sym->result && sym->result != sym && sym->result->attr.external | |
6575 | && sym == gfc_current_ns->proc_name | |
6576 | && sym == sym->result->ns->proc_name | |
6577 | && strcmp ("ppr@", sym->result->name) == 0) | |
6578 | { | |
6579 | sym->result->attr.proc_pointer = 1; | |
6580 | sym->attr.pointer = 0; | |
60e19868 | 6581 | return true; |
1e057e9b | 6582 | } |
6583 | else | |
60e19868 | 6584 | return false; |
1e057e9b | 6585 | } |
6586 | ||
6587 | ||
64e93293 | 6588 | /* Match the interface for a PROCEDURE declaration, |
6589 | including brackets (R1212). */ | |
af1a34ee | 6590 | |
6591 | static match | |
64e93293 | 6592 | match_procedure_interface (gfc_symbol **proc_if) |
af1a34ee | 6593 | { |
6594 | match m; | |
1eb2b542 | 6595 | gfc_symtree *st; |
af1a34ee | 6596 | locus old_loc, entry_loc; |
1eb2b542 | 6597 | gfc_namespace *old_ns = gfc_current_ns; |
6598 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
af1a34ee | 6599 | |
1eb2b542 | 6600 | old_loc = entry_loc = gfc_current_locus; |
af1a34ee | 6601 | gfc_clear_ts (¤t_ts); |
6602 | ||
6603 | if (gfc_match (" (") != MATCH_YES) | |
6604 | { | |
6605 | gfc_current_locus = entry_loc; | |
6606 | return MATCH_NO; | |
6607 | } | |
6608 | ||
6609 | /* Get the type spec. for the procedure interface. */ | |
6610 | old_loc = gfc_current_locus; | |
e8152f13 | 6611 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
fd1277c3 | 6612 | gfc_gobble_whitespace (); |
e0be6f02 | 6613 | if (m == MATCH_YES || (m == MATCH_NO && gfc_peek_ascii_char () == ')')) |
af1a34ee | 6614 | goto got_ts; |
6615 | ||
6616 | if (m == MATCH_ERROR) | |
6617 | return m; | |
6618 | ||
1eb2b542 | 6619 | /* Procedure interface is itself a procedure. */ |
af1a34ee | 6620 | gfc_current_locus = old_loc; |
1eb2b542 | 6621 | m = gfc_match_name (name); |
af1a34ee | 6622 | |
1eb2b542 | 6623 | /* First look to see if it is already accessible in the current |
6624 | namespace because it is use associated or contained. */ | |
6625 | st = NULL; | |
6626 | if (gfc_find_sym_tree (name, NULL, 0, &st)) | |
6627 | return MATCH_ERROR; | |
6628 | ||
6629 | /* If it is still not found, then try the parent namespace, if it | |
6630 | exists and create the symbol there if it is still not found. */ | |
6631 | if (gfc_current_ns->parent) | |
6632 | gfc_current_ns = gfc_current_ns->parent; | |
6633 | if (st == NULL && gfc_get_ha_sym_tree (name, &st)) | |
6634 | return MATCH_ERROR; | |
6635 | ||
6636 | gfc_current_ns = old_ns; | |
6637 | *proc_if = st->n.sym; | |
af1a34ee | 6638 | |
64e93293 | 6639 | if (*proc_if) |
af1a34ee | 6640 | { |
64e93293 | 6641 | (*proc_if)->refs++; |
74113644 | 6642 | /* Resolve interface if possible. That way, attr.procedure is only set |
6643 | if it is declared by a later procedure-declaration-stmt, which is | |
87863b31 | 6644 | invalid per F08:C1216 (cf. resolve_procedure_interface). */ |
7e9136f1 | 6645 | while ((*proc_if)->ts.interface |
6646 | && *proc_if != (*proc_if)->ts.interface) | |
64e93293 | 6647 | *proc_if = (*proc_if)->ts.interface; |
74113644 | 6648 | |
87863b31 | 6649 | if ((*proc_if)->attr.flavor == FL_UNKNOWN |
6650 | && (*proc_if)->ts.type == BT_UNKNOWN | |
76e207a9 | 6651 | && !gfc_add_flavor (&(*proc_if)->attr, FL_PROCEDURE, |
60e19868 | 6652 | (*proc_if)->name, NULL)) |
87863b31 | 6653 | return MATCH_ERROR; |
af1a34ee | 6654 | } |
6655 | ||
6656 | got_ts: | |
af1a34ee | 6657 | if (gfc_match (" )") != MATCH_YES) |
6658 | { | |
6659 | gfc_current_locus = entry_loc; | |
6660 | return MATCH_NO; | |
6661 | } | |
6662 | ||
64e93293 | 6663 | return MATCH_YES; |
6664 | } | |
6665 | ||
6666 | ||
6667 | /* Match a PROCEDURE declaration (R1211). */ | |
6668 | ||
6669 | static match | |
6670 | match_procedure_decl (void) | |
6671 | { | |
6672 | match m; | |
6673 | gfc_symbol *sym, *proc_if = NULL; | |
6674 | int num; | |
6675 | gfc_expr *initializer = NULL; | |
6676 | ||
293d72e0 | 6677 | /* Parse interface (with brackets). */ |
64e93293 | 6678 | m = match_procedure_interface (&proc_if); |
6679 | if (m != MATCH_YES) | |
6680 | return m; | |
6681 | ||
6682 | /* Parse attributes (with colons). */ | |
af1a34ee | 6683 | m = match_attr_spec(); |
6684 | if (m == MATCH_ERROR) | |
6685 | return MATCH_ERROR; | |
6686 | ||
caa3ea40 | 6687 | if (proc_if && proc_if->attr.is_bind_c && !current_attr.is_bind_c) |
6688 | { | |
6689 | current_attr.is_bind_c = 1; | |
6690 | has_name_equals = 0; | |
6691 | curr_binding_label = NULL; | |
6692 | } | |
6693 | ||
af1a34ee | 6694 | /* Get procedure symbols. */ |
6695 | for(num=1;;num++) | |
6696 | { | |
af1a34ee | 6697 | m = gfc_match_symbol (&sym, 0); |
6698 | if (m == MATCH_NO) | |
6699 | goto syntax; | |
6700 | else if (m == MATCH_ERROR) | |
6701 | return m; | |
6702 | ||
6703 | /* Add current_attr to the symbol attributes. */ | |
60e19868 | 6704 | if (!gfc_copy_attr (&sym->attr, ¤t_attr, NULL)) |
af1a34ee | 6705 | return MATCH_ERROR; |
6706 | ||
6707 | if (sym->attr.is_bind_c) | |
6708 | { | |
6709 | /* Check for C1218. */ | |
6710 | if (!proc_if || !proc_if->attr.is_bind_c) | |
6711 | { | |
6712 | gfc_error ("BIND(C) attribute at %C requires " | |
6713 | "an interface with BIND(C)"); | |
6714 | return MATCH_ERROR; | |
6715 | } | |
6716 | /* Check for C1217. */ | |
6717 | if (has_name_equals && sym->attr.pointer) | |
6718 | { | |
6719 | gfc_error ("BIND(C) procedure with NAME may not have " | |
6720 | "POINTER attribute at %C"); | |
6721 | return MATCH_ERROR; | |
6722 | } | |
6723 | if (has_name_equals && sym->attr.dummy) | |
6724 | { | |
6725 | gfc_error ("Dummy procedure at %C may not have " | |
6726 | "BIND(C) attribute with NAME"); | |
6727 | return MATCH_ERROR; | |
6728 | } | |
6729 | /* Set binding label for BIND(C). */ | |
60e19868 | 6730 | if (!set_binding_label (&sym->binding_label, sym->name, num)) |
af1a34ee | 6731 | return MATCH_ERROR; |
6732 | } | |
6733 | ||
60e19868 | 6734 | if (!gfc_add_external (&sym->attr, NULL)) |
af1a34ee | 6735 | return MATCH_ERROR; |
1e057e9b | 6736 | |
60e19868 | 6737 | if (add_hidden_procptr_result (sym)) |
1e057e9b | 6738 | sym = sym->result; |
6739 | ||
60e19868 | 6740 | if (!gfc_add_proc (&sym->attr, sym->name, NULL)) |
af1a34ee | 6741 | return MATCH_ERROR; |
6742 | ||
6743 | /* Set interface. */ | |
6744 | if (proc_if != NULL) | |
f7d7a083 | 6745 | { |
13a834aa | 6746 | if (sym->ts.type != BT_UNKNOWN) |
6747 | { | |
716da296 | 6748 | gfc_error ("Procedure %qs at %L already has basic type of %s", |
13a834aa | 6749 | sym->name, &gfc_current_locus, |
6750 | gfc_basic_typename (sym->ts.type)); | |
6751 | return MATCH_ERROR; | |
6752 | } | |
2cd2bb5c | 6753 | sym->ts.interface = proc_if; |
f7d7a083 | 6754 | sym->attr.untyped = 1; |
180a5dc0 | 6755 | sym->attr.if_source = IFSRC_IFBODY; |
f7d7a083 | 6756 | } |
af1a34ee | 6757 | else if (current_ts.type != BT_UNKNOWN) |
6758 | { | |
60e19868 | 6759 | if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
13a834aa | 6760 | return MATCH_ERROR; |
2cd2bb5c | 6761 | sym->ts.interface = gfc_new_symbol ("", gfc_current_ns); |
6762 | sym->ts.interface->ts = current_ts; | |
ce80bc5b | 6763 | sym->ts.interface->attr.flavor = FL_PROCEDURE; |
2cd2bb5c | 6764 | sym->ts.interface->attr.function = 1; |
ce80bc5b | 6765 | sym->attr.function = 1; |
180a5dc0 | 6766 | sym->attr.if_source = IFSRC_UNKNOWN; |
af1a34ee | 6767 | } |
6768 | ||
cad0ddcf | 6769 | if (gfc_match (" =>") == MATCH_YES) |
6770 | { | |
6771 | if (!current_attr.pointer) | |
6772 | { | |
6773 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
6774 | m = MATCH_ERROR; | |
6775 | goto cleanup; | |
6776 | } | |
6777 | ||
23d075f4 | 6778 | m = match_pointer_init (&initializer, 1); |
cad0ddcf | 6779 | if (m != MATCH_YES) |
6780 | goto cleanup; | |
6781 | ||
60e19868 | 6782 | if (!add_init_expr_to_sym (sym->name, &initializer, &gfc_current_locus)) |
cad0ddcf | 6783 | goto cleanup; |
6784 | ||
6785 | } | |
6786 | ||
af1a34ee | 6787 | if (gfc_match_eos () == MATCH_YES) |
6788 | return MATCH_YES; | |
6789 | if (gfc_match_char (',') != MATCH_YES) | |
6790 | goto syntax; | |
6791 | } | |
6792 | ||
6793 | syntax: | |
6794 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
6795 | return MATCH_ERROR; | |
cad0ddcf | 6796 | |
6797 | cleanup: | |
6798 | /* Free stuff up and return. */ | |
6799 | gfc_free_expr (initializer); | |
6800 | return m; | |
af1a34ee | 6801 | } |
6802 | ||
6803 | ||
64e93293 | 6804 | static match |
6805 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc); | |
6806 | ||
6807 | ||
6808 | /* Match a procedure pointer component declaration (R445). */ | |
6809 | ||
6810 | static match | |
6811 | match_ppc_decl (void) | |
6812 | { | |
6813 | match m; | |
6814 | gfc_symbol *proc_if = NULL; | |
6815 | gfc_typespec ts; | |
6816 | int num; | |
6817 | gfc_component *c; | |
6818 | gfc_expr *initializer = NULL; | |
6819 | gfc_typebound_proc* tb; | |
6820 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6821 | ||
6822 | /* Parse interface (with brackets). */ | |
6823 | m = match_procedure_interface (&proc_if); | |
6824 | if (m != MATCH_YES) | |
6825 | goto syntax; | |
6826 | ||
6827 | /* Parse attributes. */ | |
6828 | tb = XCNEW (gfc_typebound_proc); | |
6829 | tb->where = gfc_current_locus; | |
6830 | m = match_binding_attributes (tb, false, true); | |
6831 | if (m == MATCH_ERROR) | |
6832 | return m; | |
6833 | ||
64e93293 | 6834 | gfc_clear_attr (¤t_attr); |
6835 | current_attr.procedure = 1; | |
6836 | current_attr.proc_pointer = 1; | |
6837 | current_attr.access = tb->access; | |
6838 | current_attr.flavor = FL_PROCEDURE; | |
6839 | ||
6840 | /* Match the colons (required). */ | |
6841 | if (gfc_match (" ::") != MATCH_YES) | |
6842 | { | |
0d2b3c9c | 6843 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
64e93293 | 6844 | return MATCH_ERROR; |
6845 | } | |
6846 | ||
6847 | /* Check for C450. */ | |
6848 | if (!tb->nopass && proc_if == NULL) | |
6849 | { | |
6850 | gfc_error("NOPASS or explicit interface required at %C"); | |
6851 | return MATCH_ERROR; | |
6852 | } | |
6853 | ||
60e19868 | 6854 | if (!gfc_notify_std (GFC_STD_F2003, "Procedure pointer component at %C")) |
8a026279 | 6855 | return MATCH_ERROR; |
6856 | ||
64e93293 | 6857 | /* Match PPC names. */ |
6858 | ts = current_ts; | |
6859 | for(num=1;;num++) | |
6860 | { | |
6861 | m = gfc_match_name (name); | |
6862 | if (m == MATCH_NO) | |
6863 | goto syntax; | |
6864 | else if (m == MATCH_ERROR) | |
6865 | return m; | |
6866 | ||
60e19868 | 6867 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
64e93293 | 6868 | return MATCH_ERROR; |
6869 | ||
6870 | /* Add current_attr to the symbol attributes. */ | |
60e19868 | 6871 | if (!gfc_copy_attr (&c->attr, ¤t_attr, NULL)) |
64e93293 | 6872 | return MATCH_ERROR; |
6873 | ||
60e19868 | 6874 | if (!gfc_add_external (&c->attr, NULL)) |
64e93293 | 6875 | return MATCH_ERROR; |
6876 | ||
60e19868 | 6877 | if (!gfc_add_proc (&c->attr, name, NULL)) |
64e93293 | 6878 | return MATCH_ERROR; |
6879 | ||
99014f81 | 6880 | if (num == 1) |
6881 | c->tb = tb; | |
6882 | else | |
6883 | { | |
6884 | c->tb = XCNEW (gfc_typebound_proc); | |
6885 | c->tb->where = gfc_current_locus; | |
6886 | *c->tb = *tb; | |
6887 | } | |
fe9b08a2 | 6888 | |
64e93293 | 6889 | /* Set interface. */ |
6890 | if (proc_if != NULL) | |
6891 | { | |
6892 | c->ts.interface = proc_if; | |
6893 | c->attr.untyped = 1; | |
6894 | c->attr.if_source = IFSRC_IFBODY; | |
6895 | } | |
6896 | else if (ts.type != BT_UNKNOWN) | |
6897 | { | |
6898 | c->ts = ts; | |
6899 | c->ts.interface = gfc_new_symbol ("", gfc_current_ns); | |
a63bcd97 | 6900 | c->ts.interface->result = c->ts.interface; |
64e93293 | 6901 | c->ts.interface->ts = ts; |
ce80bc5b | 6902 | c->ts.interface->attr.flavor = FL_PROCEDURE; |
64e93293 | 6903 | c->ts.interface->attr.function = 1; |
ce80bc5b | 6904 | c->attr.function = 1; |
64e93293 | 6905 | c->attr.if_source = IFSRC_UNKNOWN; |
6906 | } | |
6907 | ||
6908 | if (gfc_match (" =>") == MATCH_YES) | |
6909 | { | |
23d075f4 | 6910 | m = match_pointer_init (&initializer, 1); |
64e93293 | 6911 | if (m != MATCH_YES) |
6912 | { | |
6913 | gfc_free_expr (initializer); | |
6914 | return m; | |
6915 | } | |
6916 | c->initializer = initializer; | |
6917 | } | |
6918 | ||
6919 | if (gfc_match_eos () == MATCH_YES) | |
6920 | return MATCH_YES; | |
6921 | if (gfc_match_char (',') != MATCH_YES) | |
6922 | goto syntax; | |
6923 | } | |
6924 | ||
6925 | syntax: | |
6926 | gfc_error ("Syntax error in procedure pointer component at %C"); | |
6927 | return MATCH_ERROR; | |
6928 | } | |
6929 | ||
6930 | ||
af1a34ee | 6931 | /* Match a PROCEDURE declaration inside an interface (R1206). */ |
6932 | ||
6933 | static match | |
6934 | match_procedure_in_interface (void) | |
6935 | { | |
6936 | match m; | |
6937 | gfc_symbol *sym; | |
6938 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
2b0f5dc8 | 6939 | locus old_locus; |
af1a34ee | 6940 | |
6941 | if (current_interface.type == INTERFACE_NAMELESS | |
6942 | || current_interface.type == INTERFACE_ABSTRACT) | |
6943 | { | |
6944 | gfc_error ("PROCEDURE at %C must be in a generic interface"); | |
6945 | return MATCH_ERROR; | |
6946 | } | |
6947 | ||
2b0f5dc8 | 6948 | /* Check if the F2008 optional double colon appears. */ |
6949 | gfc_gobble_whitespace (); | |
6950 | old_locus = gfc_current_locus; | |
6951 | if (gfc_match ("::") == MATCH_YES) | |
6952 | { | |
60e19868 | 6953 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
6954 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
2b0f5dc8 | 6955 | return MATCH_ERROR; |
6956 | } | |
6957 | else | |
6958 | gfc_current_locus = old_locus; | |
6959 | ||
af1a34ee | 6960 | for(;;) |
6961 | { | |
6962 | m = gfc_match_name (name); | |
6963 | if (m == MATCH_NO) | |
6964 | goto syntax; | |
6965 | else if (m == MATCH_ERROR) | |
6966 | return m; | |
6967 | if (gfc_get_symbol (name, gfc_current_ns->parent, &sym)) | |
6968 | return MATCH_ERROR; | |
6969 | ||
60e19868 | 6970 | if (!gfc_add_interface (sym)) |
af1a34ee | 6971 | return MATCH_ERROR; |
6972 | ||
af1a34ee | 6973 | if (gfc_match_eos () == MATCH_YES) |
6974 | break; | |
6975 | if (gfc_match_char (',') != MATCH_YES) | |
6976 | goto syntax; | |
6977 | } | |
6978 | ||
6979 | return MATCH_YES; | |
6980 | ||
6981 | syntax: | |
6982 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
6983 | return MATCH_ERROR; | |
6984 | } | |
6985 | ||
6986 | ||
6987 | /* General matcher for PROCEDURE declarations. */ | |
6988 | ||
7fd88f6e | 6989 | static match match_procedure_in_type (void); |
6990 | ||
af1a34ee | 6991 | match |
6992 | gfc_match_procedure (void) | |
6993 | { | |
6994 | match m; | |
6995 | ||
6996 | switch (gfc_current_state ()) | |
6997 | { | |
6998 | case COMP_NONE: | |
6999 | case COMP_PROGRAM: | |
7000 | case COMP_MODULE: | |
4b8eb6ca | 7001 | case COMP_SUBMODULE: |
af1a34ee | 7002 | case COMP_SUBROUTINE: |
7003 | case COMP_FUNCTION: | |
0b342e60 | 7004 | case COMP_BLOCK: |
af1a34ee | 7005 | m = match_procedure_decl (); |
7006 | break; | |
7007 | case COMP_INTERFACE: | |
7008 | m = match_procedure_in_interface (); | |
7009 | break; | |
7010 | case COMP_DERIVED: | |
64e93293 | 7011 | m = match_ppc_decl (); |
7012 | break; | |
7fd88f6e | 7013 | case COMP_DERIVED_CONTAINS: |
7014 | m = match_procedure_in_type (); | |
7015 | break; | |
af1a34ee | 7016 | default: |
7017 | return MATCH_NO; | |
7018 | } | |
7019 | ||
7020 | if (m != MATCH_YES) | |
7021 | return m; | |
7022 | ||
60e19868 | 7023 | if (!gfc_notify_std (GFC_STD_F2003, "PROCEDURE statement at %C")) |
af1a34ee | 7024 | return MATCH_ERROR; |
7025 | ||
7026 | return m; | |
7027 | } | |
7028 | ||
7029 | ||
a34926ba | 7030 | /* Warn if a matched procedure has the same name as an intrinsic; this is |
7031 | simply a wrapper around gfc_warn_intrinsic_shadow that interprets the current | |
7032 | parser-state-stack to find out whether we're in a module. */ | |
7033 | ||
7034 | static void | |
8290d53f | 7035 | do_warn_intrinsic_shadow (const gfc_symbol* sym, bool func) |
a34926ba | 7036 | { |
7037 | bool in_module; | |
7038 | ||
7039 | in_module = (gfc_state_stack->previous | |
4b8eb6ca | 7040 | && (gfc_state_stack->previous->state == COMP_MODULE |
7041 | || gfc_state_stack->previous->state == COMP_SUBMODULE)); | |
a34926ba | 7042 | |
7043 | gfc_warn_intrinsic_shadow (sym, in_module, func); | |
7044 | } | |
7045 | ||
7046 | ||
4ee9c684 | 7047 | /* Match a function declaration. */ |
7048 | ||
7049 | match | |
7050 | gfc_match_function_decl (void) | |
7051 | { | |
7052 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7053 | gfc_symbol *sym, *result; | |
7054 | locus old_loc; | |
7055 | match m; | |
c5d33754 | 7056 | match suffix_match; |
8db94b3b | 7057 | match found_match; /* Status returned by match func. */ |
4ee9c684 | 7058 | |
7059 | if (gfc_current_state () != COMP_NONE | |
7060 | && gfc_current_state () != COMP_INTERFACE | |
7061 | && gfc_current_state () != COMP_CONTAINS) | |
7062 | return MATCH_NO; | |
7063 | ||
7064 | gfc_clear_ts (¤t_ts); | |
7065 | ||
cbb9e6aa | 7066 | old_loc = gfc_current_locus; |
4ee9c684 | 7067 | |
077932f9 | 7068 | m = gfc_match_prefix (¤t_ts); |
4ee9c684 | 7069 | if (m != MATCH_YES) |
7070 | { | |
cbb9e6aa | 7071 | gfc_current_locus = old_loc; |
4ee9c684 | 7072 | return m; |
7073 | } | |
7074 | ||
7075 | if (gfc_match ("function% %n", name) != MATCH_YES) | |
7076 | { | |
cbb9e6aa | 7077 | gfc_current_locus = old_loc; |
4ee9c684 | 7078 | return MATCH_NO; |
7079 | } | |
4b8eb6ca | 7080 | |
d77f260f | 7081 | if (get_proc_name (name, &sym, false)) |
4ee9c684 | 7082 | return MATCH_ERROR; |
1e057e9b | 7083 | |
60e19868 | 7084 | if (add_hidden_procptr_result (sym)) |
1e057e9b | 7085 | sym = sym->result; |
7086 | ||
4b8eb6ca | 7087 | if (current_attr.module_procedure) |
7088 | sym->attr.module_procedure = 1; | |
7089 | ||
4ee9c684 | 7090 | gfc_new_block = sym; |
7091 | ||
7092 | m = gfc_match_formal_arglist (sym, 0, 0); | |
7093 | if (m == MATCH_NO) | |
9b435b6d | 7094 | { |
7095 | gfc_error ("Expected formal argument list in function " | |
1a9745d2 | 7096 | "definition at %C"); |
9b435b6d | 7097 | m = MATCH_ERROR; |
7098 | goto cleanup; | |
7099 | } | |
4ee9c684 | 7100 | else if (m == MATCH_ERROR) |
7101 | goto cleanup; | |
7102 | ||
7103 | result = NULL; | |
7104 | ||
c5d33754 | 7105 | /* According to the draft, the bind(c) and result clause can |
7106 | come in either order after the formal_arg_list (i.e., either | |
7107 | can be first, both can exist together or by themselves or neither | |
7108 | one). Therefore, the match_result can't match the end of the | |
7109 | string, and check for the bind(c) or result clause in either order. */ | |
7110 | found_match = gfc_match_eos (); | |
7111 | ||
7112 | /* Make sure that it isn't already declared as BIND(C). If it is, it | |
7113 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7114 | not allowed for procedures. */ | |
7115 | if (sym->attr.is_bind_c == 1) | |
7116 | { | |
7117 | sym->attr.is_bind_c = 0; | |
7118 | if (sym->old_symbol != NULL) | |
7119 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7120 | "variables or common blocks", | |
7121 | &(sym->old_symbol->declared_at)); | |
7122 | else | |
7123 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7124 | "variables or common blocks", &gfc_current_locus); | |
4ee9c684 | 7125 | } |
7126 | ||
c5d33754 | 7127 | if (found_match != MATCH_YES) |
4ee9c684 | 7128 | { |
c5d33754 | 7129 | /* If we haven't found the end-of-statement, look for a suffix. */ |
7130 | suffix_match = gfc_match_suffix (sym, &result); | |
7131 | if (suffix_match == MATCH_YES) | |
7132 | /* Need to get the eos now. */ | |
7133 | found_match = gfc_match_eos (); | |
7134 | else | |
7135 | found_match = suffix_match; | |
4ee9c684 | 7136 | } |
7137 | ||
c5d33754 | 7138 | if(found_match != MATCH_YES) |
7139 | m = MATCH_ERROR; | |
4ee9c684 | 7140 | else |
7141 | { | |
c5d33754 | 7142 | /* Make changes to the symbol. */ |
7143 | m = MATCH_ERROR; | |
8db94b3b | 7144 | |
60e19868 | 7145 | if (!gfc_add_function (&sym->attr, sym->name, NULL)) |
c5d33754 | 7146 | goto cleanup; |
8db94b3b | 7147 | |
76e207a9 | 7148 | if (!gfc_missing_attr (&sym->attr, NULL)) |
c5d33754 | 7149 | goto cleanup; |
4ee9c684 | 7150 | |
76e207a9 | 7151 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
7152 | { | |
7153 | if(!sym->attr.module_procedure) | |
7154 | goto cleanup; | |
7155 | else | |
7156 | gfc_error_check (); | |
7157 | } | |
7158 | ||
8d39570e | 7159 | /* Delay matching the function characteristics until after the |
077932f9 | 7160 | specification block by signalling kind=-1. */ |
8d39570e | 7161 | sym->declared_at = old_loc; |
7162 | if (current_ts.type != BT_UNKNOWN) | |
7163 | current_ts.kind = -1; | |
7164 | else | |
7165 | current_ts.kind = 0; | |
077932f9 | 7166 | |
c5d33754 | 7167 | if (result == NULL) |
7168 | { | |
0477d42d | 7169 | if (current_ts.type != BT_UNKNOWN |
60e19868 | 7170 | && !gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
0477d42d | 7171 | goto cleanup; |
c5d33754 | 7172 | sym->result = sym; |
7173 | } | |
7174 | else | |
7175 | { | |
0477d42d | 7176 | if (current_ts.type != BT_UNKNOWN |
60e19868 | 7177 | && !gfc_add_type (result, ¤t_ts, &gfc_current_locus)) |
0477d42d | 7178 | goto cleanup; |
c5d33754 | 7179 | sym->result = result; |
7180 | } | |
7181 | ||
a34926ba | 7182 | /* Warn if this procedure has the same name as an intrinsic. */ |
8290d53f | 7183 | do_warn_intrinsic_shadow (sym, true); |
a34926ba | 7184 | |
c5d33754 | 7185 | return MATCH_YES; |
7186 | } | |
4ee9c684 | 7187 | |
7188 | cleanup: | |
cbb9e6aa | 7189 | gfc_current_locus = old_loc; |
4ee9c684 | 7190 | return m; |
7191 | } | |
7192 | ||
1a9745d2 | 7193 | |
7194 | /* This is mostly a copy of parse.c(add_global_procedure) but modified to | |
7195 | pass the name of the entry, rather than the gfc_current_block name, and | |
7196 | to return false upon finding an existing global entry. */ | |
858f9894 | 7197 | |
7198 | static bool | |
8d779aef | 7199 | add_global_entry (const char *name, const char *binding_label, bool sub, |
7200 | locus *where) | |
858f9894 | 7201 | { |
7202 | gfc_gsymbol *s; | |
8458f4ca | 7203 | enum gfc_symbol_type type; |
858f9894 | 7204 | |
5b11d932 | 7205 | type = sub ? GSYM_SUBROUTINE : GSYM_FUNCTION; |
858f9894 | 7206 | |
da5c730d | 7207 | /* Only in Fortran 2003: For procedures with a binding label also the Fortran |
7208 | name is a global identifier. */ | |
7209 | if (!binding_label || gfc_notification_std (GFC_STD_F2008)) | |
858f9894 | 7210 | { |
da5c730d | 7211 | s = gfc_get_gsymbol (name); |
7212 | ||
7213 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
7214 | { | |
8d779aef | 7215 | gfc_global_used (s, where); |
da5c730d | 7216 | return false; |
7217 | } | |
7218 | else | |
7219 | { | |
7220 | s->type = type; | |
c8b913ab | 7221 | s->sym_name = name; |
8d779aef | 7222 | s->where = *where; |
da5c730d | 7223 | s->defined = 1; |
7224 | s->ns = gfc_current_ns; | |
7225 | } | |
858f9894 | 7226 | } |
da5c730d | 7227 | |
7228 | /* Don't add the symbol multiple times. */ | |
7229 | if (binding_label | |
7230 | && (!gfc_notification_std (GFC_STD_F2008) | |
7231 | || strcmp (name, binding_label) != 0)) | |
7232 | { | |
7233 | s = gfc_get_gsymbol (binding_label); | |
7234 | ||
7235 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
7236 | { | |
8d779aef | 7237 | gfc_global_used (s, where); |
da5c730d | 7238 | return false; |
7239 | } | |
7240 | else | |
7241 | { | |
7242 | s->type = type; | |
c8b913ab | 7243 | s->sym_name = name; |
da5c730d | 7244 | s->binding_label = binding_label; |
8d779aef | 7245 | s->where = *where; |
da5c730d | 7246 | s->defined = 1; |
7247 | s->ns = gfc_current_ns; | |
7248 | } | |
7249 | } | |
7250 | ||
7251 | return true; | |
858f9894 | 7252 | } |
4ee9c684 | 7253 | |
1a9745d2 | 7254 | |
4ee9c684 | 7255 | /* Match an ENTRY statement. */ |
7256 | ||
7257 | match | |
7258 | gfc_match_entry (void) | |
7259 | { | |
1b716045 | 7260 | gfc_symbol *proc; |
7261 | gfc_symbol *result; | |
7262 | gfc_symbol *entry; | |
4ee9c684 | 7263 | char name[GFC_MAX_SYMBOL_LEN + 1]; |
7264 | gfc_compile_state state; | |
7265 | match m; | |
1b716045 | 7266 | gfc_entry_list *el; |
7b5e1acc | 7267 | locus old_loc; |
d77f260f | 7268 | bool module_procedure; |
86f0974b | 7269 | char peek_char; |
7270 | match is_bind_c; | |
4ee9c684 | 7271 | |
7272 | m = gfc_match_name (name); | |
7273 | if (m != MATCH_YES) | |
7274 | return m; | |
7275 | ||
60e19868 | 7276 | if (!gfc_notify_std (GFC_STD_F2008_OBS, "ENTRY statement at %C")) |
a3b81b0f | 7277 | return MATCH_ERROR; |
7278 | ||
1b716045 | 7279 | state = gfc_current_state (); |
ea37f786 | 7280 | if (state != COMP_SUBROUTINE && state != COMP_FUNCTION) |
1b716045 | 7281 | { |
ea37f786 | 7282 | switch (state) |
7283 | { | |
7284 | case COMP_PROGRAM: | |
7285 | gfc_error ("ENTRY statement at %C cannot appear within a PROGRAM"); | |
7286 | break; | |
7287 | case COMP_MODULE: | |
7288 | gfc_error ("ENTRY statement at %C cannot appear within a MODULE"); | |
7289 | break; | |
4b8eb6ca | 7290 | case COMP_SUBMODULE: |
7291 | gfc_error ("ENTRY statement at %C cannot appear within a SUBMODULE"); | |
7292 | break; | |
ea37f786 | 7293 | case COMP_BLOCK_DATA: |
1a9745d2 | 7294 | gfc_error ("ENTRY statement at %C cannot appear within " |
7295 | "a BLOCK DATA"); | |
ea37f786 | 7296 | break; |
7297 | case COMP_INTERFACE: | |
1a9745d2 | 7298 | gfc_error ("ENTRY statement at %C cannot appear within " |
7299 | "an INTERFACE"); | |
ea37f786 | 7300 | break; |
d7cd448a | 7301 | case COMP_STRUCTURE: |
7302 | gfc_error ("ENTRY statement at %C cannot appear within " | |
7303 | "a STRUCTURE block"); | |
7304 | break; | |
ea37f786 | 7305 | case COMP_DERIVED: |
1a9745d2 | 7306 | gfc_error ("ENTRY statement at %C cannot appear within " |
7307 | "a DERIVED TYPE block"); | |
ea37f786 | 7308 | break; |
7309 | case COMP_IF: | |
1a9745d2 | 7310 | gfc_error ("ENTRY statement at %C cannot appear within " |
7311 | "an IF-THEN block"); | |
ea37f786 | 7312 | break; |
7313 | case COMP_DO: | |
55ea8666 | 7314 | case COMP_DO_CONCURRENT: |
1a9745d2 | 7315 | gfc_error ("ENTRY statement at %C cannot appear within " |
7316 | "a DO block"); | |
ea37f786 | 7317 | break; |
7318 | case COMP_SELECT: | |
1a9745d2 | 7319 | gfc_error ("ENTRY statement at %C cannot appear within " |
7320 | "a SELECT block"); | |
ea37f786 | 7321 | break; |
7322 | case COMP_FORALL: | |
1a9745d2 | 7323 | gfc_error ("ENTRY statement at %C cannot appear within " |
7324 | "a FORALL block"); | |
ea37f786 | 7325 | break; |
7326 | case COMP_WHERE: | |
1a9745d2 | 7327 | gfc_error ("ENTRY statement at %C cannot appear within " |
7328 | "a WHERE block"); | |
ea37f786 | 7329 | break; |
7330 | case COMP_CONTAINS: | |
1a9745d2 | 7331 | gfc_error ("ENTRY statement at %C cannot appear within " |
7332 | "a contained subprogram"); | |
ea37f786 | 7333 | break; |
7334 | default: | |
3132dbae | 7335 | gfc_error ("Unexpected ENTRY statement at %C"); |
ea37f786 | 7336 | } |
1b716045 | 7337 | return MATCH_ERROR; |
7338 | } | |
7339 | ||
c286c294 | 7340 | if ((state == COMP_SUBROUTINE || state == COMP_FUNCTION) |
7341 | && gfc_state_stack->previous->state == COMP_INTERFACE) | |
7342 | { | |
7343 | gfc_error ("ENTRY statement at %C cannot appear within an INTERFACE"); | |
7344 | return MATCH_ERROR; | |
7345 | } | |
7346 | ||
d77f260f | 7347 | module_procedure = gfc_current_ns->parent != NULL |
1a9745d2 | 7348 | && gfc_current_ns->parent->proc_name |
7349 | && gfc_current_ns->parent->proc_name->attr.flavor | |
7350 | == FL_MODULE; | |
d77f260f | 7351 | |
1b716045 | 7352 | if (gfc_current_ns->parent != NULL |
7353 | && gfc_current_ns->parent->proc_name | |
d77f260f | 7354 | && !module_procedure) |
1b716045 | 7355 | { |
7356 | gfc_error("ENTRY statement at %C cannot appear in a " | |
7357 | "contained procedure"); | |
7358 | return MATCH_ERROR; | |
7359 | } | |
7360 | ||
d77f260f | 7361 | /* Module function entries need special care in get_proc_name |
7362 | because previous references within the function will have | |
7363 | created symbols attached to the current namespace. */ | |
7364 | if (get_proc_name (name, &entry, | |
7365 | gfc_current_ns->parent != NULL | |
c1e4695a | 7366 | && module_procedure)) |
4ee9c684 | 7367 | return MATCH_ERROR; |
7368 | ||
1b716045 | 7369 | proc = gfc_current_block (); |
7370 | ||
86f0974b | 7371 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
7372 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7373 | not allowed for procedures. */ | |
7374 | if (entry->attr.is_bind_c == 1) | |
7375 | { | |
7376 | entry->attr.is_bind_c = 0; | |
7377 | if (entry->old_symbol != NULL) | |
7378 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7379 | "variables or common blocks", | |
7380 | &(entry->old_symbol->declared_at)); | |
7381 | else | |
7382 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7383 | "variables or common blocks", &gfc_current_locus); | |
7384 | } | |
8db94b3b | 7385 | |
86f0974b | 7386 | /* Check what next non-whitespace character is so we can tell if there |
7387 | is the required parens if we have a BIND(C). */ | |
8d779aef | 7388 | old_loc = gfc_current_locus; |
86f0974b | 7389 | gfc_gobble_whitespace (); |
e0be6f02 | 7390 | peek_char = gfc_peek_ascii_char (); |
86f0974b | 7391 | |
1b716045 | 7392 | if (state == COMP_SUBROUTINE) |
4ee9c684 | 7393 | { |
4ee9c684 | 7394 | m = gfc_match_formal_arglist (entry, 0, 1); |
7395 | if (m != MATCH_YES) | |
7396 | return MATCH_ERROR; | |
7397 | ||
75ae7f6c | 7398 | /* Call gfc_match_bind_c with allow_binding_name = true as ENTRY can |
7399 | never be an internal procedure. */ | |
7400 | is_bind_c = gfc_match_bind_c (entry, true); | |
86f0974b | 7401 | if (is_bind_c == MATCH_ERROR) |
7402 | return MATCH_ERROR; | |
7403 | if (is_bind_c == MATCH_YES) | |
7404 | { | |
7405 | if (peek_char != '(') | |
7406 | { | |
7407 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
7408 | return MATCH_ERROR; | |
7409 | } | |
76e207a9 | 7410 | if (!gfc_add_is_bind_c (&(entry->attr), entry->name, |
60e19868 | 7411 | &(entry->declared_at), 1)) |
86f0974b | 7412 | return MATCH_ERROR; |
7413 | } | |
7414 | ||
da5c730d | 7415 | if (!gfc_current_ns->parent |
8d779aef | 7416 | && !add_global_entry (name, entry->binding_label, true, |
7417 | &old_loc)) | |
da5c730d | 7418 | return MATCH_ERROR; |
7419 | ||
7420 | /* An entry in a subroutine. */ | |
60e19868 | 7421 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7422 | || !gfc_add_subroutine (&entry->attr, entry->name, NULL)) | |
4ee9c684 | 7423 | return MATCH_ERROR; |
1b716045 | 7424 | } |
7425 | else | |
7426 | { | |
7b5e1acc | 7427 | /* An entry in a function. |
1a9745d2 | 7428 | We need to take special care because writing |
7429 | ENTRY f() | |
7430 | as | |
7431 | ENTRY f | |
7432 | is allowed, whereas | |
7433 | ENTRY f() RESULT (r) | |
7434 | can't be written as | |
7435 | ENTRY f RESULT (r). */ | |
7b5e1acc | 7436 | if (gfc_match_eos () == MATCH_YES) |
7437 | { | |
7438 | gfc_current_locus = old_loc; | |
7439 | /* Match the empty argument list, and add the interface to | |
7440 | the symbol. */ | |
7441 | m = gfc_match_formal_arglist (entry, 0, 1); | |
7442 | } | |
7443 | else | |
7444 | m = gfc_match_formal_arglist (entry, 0, 0); | |
7445 | ||
4ee9c684 | 7446 | if (m != MATCH_YES) |
7447 | return MATCH_ERROR; | |
7448 | ||
4ee9c684 | 7449 | result = NULL; |
7450 | ||
7451 | if (gfc_match_eos () == MATCH_YES) | |
7452 | { | |
60e19868 | 7453 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7454 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
4ee9c684 | 7455 | return MATCH_ERROR; |
7456 | ||
c6871095 | 7457 | entry->result = entry; |
4ee9c684 | 7458 | } |
7459 | else | |
7460 | { | |
86f0974b | 7461 | m = gfc_match_suffix (entry, &result); |
4ee9c684 | 7462 | if (m == MATCH_NO) |
7463 | gfc_syntax_error (ST_ENTRY); | |
7464 | if (m != MATCH_YES) | |
7465 | return MATCH_ERROR; | |
7466 | ||
86f0974b | 7467 | if (result) |
7468 | { | |
60e19868 | 7469 | if (!gfc_add_result (&result->attr, result->name, NULL) |
7470 | || !gfc_add_entry (&entry->attr, result->name, NULL) | |
7471 | || !gfc_add_function (&entry->attr, result->name, NULL)) | |
86f0974b | 7472 | return MATCH_ERROR; |
7473 | entry->result = result; | |
7474 | } | |
7475 | else | |
7476 | { | |
60e19868 | 7477 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7478 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
86f0974b | 7479 | return MATCH_ERROR; |
7480 | entry->result = entry; | |
7481 | } | |
4ee9c684 | 7482 | } |
da5c730d | 7483 | |
7484 | if (!gfc_current_ns->parent | |
8d779aef | 7485 | && !add_global_entry (name, entry->binding_label, false, |
7486 | &old_loc)) | |
da5c730d | 7487 | return MATCH_ERROR; |
4ee9c684 | 7488 | } |
7489 | ||
7490 | if (gfc_match_eos () != MATCH_YES) | |
7491 | { | |
7492 | gfc_syntax_error (ST_ENTRY); | |
7493 | return MATCH_ERROR; | |
7494 | } | |
7495 | ||
1b716045 | 7496 | entry->attr.recursive = proc->attr.recursive; |
7497 | entry->attr.elemental = proc->attr.elemental; | |
7498 | entry->attr.pure = proc->attr.pure; | |
4ee9c684 | 7499 | |
1b716045 | 7500 | el = gfc_get_entry_list (); |
7501 | el->sym = entry; | |
7502 | el->next = gfc_current_ns->entries; | |
7503 | gfc_current_ns->entries = el; | |
7504 | if (el->next) | |
7505 | el->id = el->next->id + 1; | |
7506 | else | |
7507 | el->id = 1; | |
4ee9c684 | 7508 | |
1b716045 | 7509 | new_st.op = EXEC_ENTRY; |
7510 | new_st.ext.entry = el; | |
7511 | ||
7512 | return MATCH_YES; | |
4ee9c684 | 7513 | } |
7514 | ||
7515 | ||
7516 | /* Match a subroutine statement, including optional prefixes. */ | |
7517 | ||
7518 | match | |
7519 | gfc_match_subroutine (void) | |
7520 | { | |
7521 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7522 | gfc_symbol *sym; | |
7523 | match m; | |
c5d33754 | 7524 | match is_bind_c; |
7525 | char peek_char; | |
75ae7f6c | 7526 | bool allow_binding_name; |
4ee9c684 | 7527 | |
7528 | if (gfc_current_state () != COMP_NONE | |
7529 | && gfc_current_state () != COMP_INTERFACE | |
7530 | && gfc_current_state () != COMP_CONTAINS) | |
7531 | return MATCH_NO; | |
7532 | ||
077932f9 | 7533 | m = gfc_match_prefix (NULL); |
4ee9c684 | 7534 | if (m != MATCH_YES) |
7535 | return m; | |
7536 | ||
7537 | m = gfc_match ("subroutine% %n", name); | |
7538 | if (m != MATCH_YES) | |
7539 | return m; | |
7540 | ||
d77f260f | 7541 | if (get_proc_name (name, &sym, false)) |
4ee9c684 | 7542 | return MATCH_ERROR; |
1e057e9b | 7543 | |
22c1d301 | 7544 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if |
293d72e0 | 7545 | the symbol existed before. */ |
22c1d301 | 7546 | sym->declared_at = gfc_current_locus; |
7547 | ||
4b8eb6ca | 7548 | if (current_attr.module_procedure) |
7549 | sym->attr.module_procedure = 1; | |
7550 | ||
60e19868 | 7551 | if (add_hidden_procptr_result (sym)) |
1e057e9b | 7552 | sym = sym->result; |
7553 | ||
4ee9c684 | 7554 | gfc_new_block = sym; |
7555 | ||
c5d33754 | 7556 | /* Check what next non-whitespace character is so we can tell if there |
86f0974b | 7557 | is the required parens if we have a BIND(C). */ |
c5d33754 | 7558 | gfc_gobble_whitespace (); |
e0be6f02 | 7559 | peek_char = gfc_peek_ascii_char (); |
8db94b3b | 7560 | |
60e19868 | 7561 | if (!gfc_add_subroutine (&sym->attr, sym->name, NULL)) |
4ee9c684 | 7562 | return MATCH_ERROR; |
7563 | ||
7564 | if (gfc_match_formal_arglist (sym, 0, 1) != MATCH_YES) | |
7565 | return MATCH_ERROR; | |
7566 | ||
c5d33754 | 7567 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
7568 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7569 | not allowed for procedures. */ | |
7570 | if (sym->attr.is_bind_c == 1) | |
7571 | { | |
7572 | sym->attr.is_bind_c = 0; | |
7573 | if (sym->old_symbol != NULL) | |
7574 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7575 | "variables or common blocks", | |
7576 | &(sym->old_symbol->declared_at)); | |
7577 | else | |
7578 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7579 | "variables or common blocks", &gfc_current_locus); | |
7580 | } | |
75ae7f6c | 7581 | |
7582 | /* C binding names are not allowed for internal procedures. */ | |
7583 | if (gfc_current_state () == COMP_CONTAINS | |
7584 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
7585 | allow_binding_name = false; | |
7586 | else | |
7587 | allow_binding_name = true; | |
7588 | ||
c5d33754 | 7589 | /* Here, we are just checking if it has the bind(c) attribute, and if |
7590 | so, then we need to make sure it's all correct. If it doesn't, | |
7591 | we still need to continue matching the rest of the subroutine line. */ | |
75ae7f6c | 7592 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
c5d33754 | 7593 | if (is_bind_c == MATCH_ERROR) |
7594 | { | |
7595 | /* There was an attempt at the bind(c), but it was wrong. An | |
7596 | error message should have been printed w/in the gfc_match_bind_c | |
7597 | so here we'll just return the MATCH_ERROR. */ | |
7598 | return MATCH_ERROR; | |
7599 | } | |
7600 | ||
7601 | if (is_bind_c == MATCH_YES) | |
7602 | { | |
75ae7f6c | 7603 | /* The following is allowed in the Fortran 2008 draft. */ |
4518e961 | 7604 | if (gfc_current_state () == COMP_CONTAINS |
75ae7f6c | 7605 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
60e19868 | 7606 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
7607 | "at %L may not be specified for an internal " | |
7608 | "procedure", &gfc_current_locus)) | |
75ae7f6c | 7609 | return MATCH_ERROR; |
7610 | ||
c5d33754 | 7611 | if (peek_char != '(') |
7612 | { | |
7613 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
7614 | return MATCH_ERROR; | |
7615 | } | |
76e207a9 | 7616 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, |
60e19868 | 7617 | &(sym->declared_at), 1)) |
c5d33754 | 7618 | return MATCH_ERROR; |
7619 | } | |
8db94b3b | 7620 | |
4ee9c684 | 7621 | if (gfc_match_eos () != MATCH_YES) |
7622 | { | |
7623 | gfc_syntax_error (ST_SUBROUTINE); | |
7624 | return MATCH_ERROR; | |
7625 | } | |
7626 | ||
60e19868 | 7627 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
76e207a9 | 7628 | { |
7629 | if(!sym->attr.module_procedure) | |
7630 | return MATCH_ERROR; | |
7631 | else | |
7632 | gfc_error_check (); | |
7633 | } | |
4ee9c684 | 7634 | |
a34926ba | 7635 | /* Warn if it has the same name as an intrinsic. */ |
8290d53f | 7636 | do_warn_intrinsic_shadow (sym, false); |
a34926ba | 7637 | |
4ee9c684 | 7638 | return MATCH_YES; |
7639 | } | |
7640 | ||
7641 | ||
7136063b | 7642 | /* Check that the NAME identifier in a BIND attribute or statement |
7643 | is conform to C identifier rules. */ | |
7644 | ||
7645 | match | |
7646 | check_bind_name_identifier (char **name) | |
7647 | { | |
7648 | char *n = *name, *p; | |
7649 | ||
7650 | /* Remove leading spaces. */ | |
7651 | while (*n == ' ') | |
7652 | n++; | |
7653 | ||
7654 | /* On an empty string, free memory and set name to NULL. */ | |
7655 | if (*n == '\0') | |
7656 | { | |
7657 | free (*name); | |
7658 | *name = NULL; | |
7659 | return MATCH_YES; | |
7660 | } | |
7661 | ||
7662 | /* Remove trailing spaces. */ | |
7663 | p = n + strlen(n) - 1; | |
7664 | while (*p == ' ') | |
7665 | *(p--) = '\0'; | |
7666 | ||
7667 | /* Insert the identifier into the symbol table. */ | |
7668 | p = xstrdup (n); | |
7669 | free (*name); | |
7670 | *name = p; | |
7671 | ||
7672 | /* Now check that identifier is valid under C rules. */ | |
7673 | if (ISDIGIT (*p)) | |
7674 | { | |
7675 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
7676 | return MATCH_ERROR; | |
7677 | } | |
7678 | ||
7679 | for (; *p; p++) | |
7680 | if (!(ISALNUM (*p) || *p == '_' || *p == '$')) | |
7681 | { | |
7682 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
7683 | return MATCH_ERROR; | |
7684 | } | |
7685 | ||
7686 | return MATCH_YES; | |
7687 | } | |
7688 | ||
7689 | ||
c5d33754 | 7690 | /* Match a BIND(C) specifier, with the optional 'name=' specifier if |
7691 | given, and set the binding label in either the given symbol (if not | |
a0527218 | 7692 | NULL), or in the current_ts. The symbol may be NULL because we may |
c5d33754 | 7693 | encounter the BIND(C) before the declaration itself. Return |
7694 | MATCH_NO if what we're looking at isn't a BIND(C) specifier, | |
7695 | MATCH_ERROR if it is a BIND(C) clause but an error was encountered, | |
7696 | or MATCH_YES if the specifier was correct and the binding label and | |
7697 | bind(c) fields were set correctly for the given symbol or the | |
75ae7f6c | 7698 | current_ts. If allow_binding_name is false, no binding name may be |
7699 | given. */ | |
c5d33754 | 7700 | |
7701 | match | |
75ae7f6c | 7702 | gfc_match_bind_c (gfc_symbol *sym, bool allow_binding_name) |
c5d33754 | 7703 | { |
7136063b | 7704 | char *binding_label = NULL; |
7705 | gfc_expr *e = NULL; | |
c5d33754 | 7706 | |
8db94b3b | 7707 | /* Initialize the flag that specifies whether we encountered a NAME= |
c5d33754 | 7708 | specifier or not. */ |
7709 | has_name_equals = 0; | |
7710 | ||
c5d33754 | 7711 | /* This much we have to be able to match, in this order, if |
7712 | there is a bind(c) label. */ | |
7713 | if (gfc_match (" bind ( c ") != MATCH_YES) | |
7714 | return MATCH_NO; | |
7715 | ||
7716 | /* Now see if there is a binding label, or if we've reached the | |
7717 | end of the bind(c) attribute without one. */ | |
7718 | if (gfc_match_char (',') == MATCH_YES) | |
7719 | { | |
7720 | if (gfc_match (" name = ") != MATCH_YES) | |
7721 | { | |
7722 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
7723 | "at %C"); | |
7724 | /* should give an error message here */ | |
7725 | return MATCH_ERROR; | |
7726 | } | |
7727 | ||
7728 | has_name_equals = 1; | |
7729 | ||
7136063b | 7730 | if (gfc_match_init_expr (&e) != MATCH_YES) |
7731 | { | |
7732 | gfc_free_expr (e); | |
7733 | return MATCH_ERROR; | |
7734 | } | |
8db94b3b | 7735 | |
7136063b | 7736 | if (!gfc_simplify_expr(e, 0)) |
c5d33754 | 7737 | { |
7136063b | 7738 | gfc_error ("NAME= specifier at %C should be a constant expression"); |
7739 | gfc_free_expr (e); | |
7740 | return MATCH_ERROR; | |
c5d33754 | 7741 | } |
7136063b | 7742 | |
7743 | if (e->expr_type != EXPR_CONSTANT || e->ts.type != BT_CHARACTER | |
7744 | || e->ts.kind != gfc_default_character_kind || e->rank != 0) | |
c5d33754 | 7745 | { |
7136063b | 7746 | gfc_error ("NAME= specifier at %C should be a scalar of " |
7747 | "default character kind"); | |
7748 | gfc_free_expr(e); | |
7749 | return MATCH_ERROR; | |
c5d33754 | 7750 | } |
7136063b | 7751 | |
7752 | // Get a C string from the Fortran string constant | |
7753 | binding_label = gfc_widechar_to_char (e->value.character.string, | |
7754 | e->value.character.length); | |
7755 | gfc_free_expr(e); | |
7756 | ||
7757 | // Check that it is valid (old gfc_match_name_C) | |
7758 | if (check_bind_name_identifier (&binding_label) != MATCH_YES) | |
7759 | return MATCH_ERROR; | |
7760 | } | |
c5d33754 | 7761 | |
7762 | /* Get the required right paren. */ | |
7763 | if (gfc_match_char (')') != MATCH_YES) | |
7764 | { | |
7765 | gfc_error ("Missing closing paren for binding label at %C"); | |
7766 | return MATCH_ERROR; | |
7767 | } | |
7768 | ||
75ae7f6c | 7769 | if (has_name_equals && !allow_binding_name) |
7770 | { | |
7771 | gfc_error ("No binding name is allowed in BIND(C) at %C"); | |
7772 | return MATCH_ERROR; | |
7773 | } | |
7774 | ||
7775 | if (has_name_equals && sym != NULL && sym->attr.dummy) | |
7776 | { | |
7777 | gfc_error ("For dummy procedure %s, no binding name is " | |
7778 | "allowed in BIND(C) at %C", sym->name); | |
7779 | return MATCH_ERROR; | |
7780 | } | |
7781 | ||
7782 | ||
c5d33754 | 7783 | /* Save the binding label to the symbol. If sym is null, we're |
7784 | probably matching the typespec attributes of a declaration and | |
7785 | haven't gotten the name yet, and therefore, no symbol yet. */ | |
7b2060ba | 7786 | if (binding_label) |
c5d33754 | 7787 | { |
7788 | if (sym != NULL) | |
7b2060ba | 7789 | sym->binding_label = binding_label; |
c5d33754 | 7790 | else |
7b2060ba | 7791 | curr_binding_label = binding_label; |
c5d33754 | 7792 | } |
75ae7f6c | 7793 | else if (allow_binding_name) |
c5d33754 | 7794 | { |
7795 | /* No binding label, but if symbol isn't null, we | |
75ae7f6c | 7796 | can set the label for it here. |
7797 | If name="" or allow_binding_name is false, no C binding name is | |
293d72e0 | 7798 | created. */ |
c5d33754 | 7799 | if (sym != NULL && sym->name != NULL && has_name_equals == 0) |
7b2060ba | 7800 | sym->binding_label = IDENTIFIER_POINTER (get_identifier (sym->name)); |
c5d33754 | 7801 | } |
94fa7146 | 7802 | |
5cf92482 | 7803 | if (has_name_equals && gfc_current_state () == COMP_INTERFACE |
7804 | && current_interface.type == INTERFACE_ABSTRACT) | |
94fa7146 | 7805 | { |
7806 | gfc_error ("NAME not allowed on BIND(C) for ABSTRACT INTERFACE at %C"); | |
7807 | return MATCH_ERROR; | |
7808 | } | |
7809 | ||
c5d33754 | 7810 | return MATCH_YES; |
7811 | } | |
7812 | ||
7813 | ||
231e961a | 7814 | /* Return nonzero if we're currently compiling a contained procedure. */ |
c0985832 | 7815 | |
7816 | static int | |
7817 | contained_procedure (void) | |
7818 | { | |
1c343287 | 7819 | gfc_state_data *s = gfc_state_stack; |
c0985832 | 7820 | |
1c343287 | 7821 | if ((s->state == COMP_SUBROUTINE || s->state == COMP_FUNCTION) |
7822 | && s->previous != NULL && s->previous->state == COMP_CONTAINS) | |
7823 | return 1; | |
c0985832 | 7824 | |
7825 | return 0; | |
7826 | } | |
7827 | ||
e14bee04 | 7828 | /* Set the kind of each enumerator. The kind is selected such that it is |
3b6a4b41 | 7829 | interoperable with the corresponding C enumeration type, making |
7830 | sure that -fshort-enums is honored. */ | |
7831 | ||
7832 | static void | |
7833 | set_enum_kind(void) | |
7834 | { | |
7835 | enumerator_history *current_history = NULL; | |
7836 | int kind; | |
7837 | int i; | |
7838 | ||
7839 | if (max_enum == NULL || enum_history == NULL) | |
7840 | return; | |
7841 | ||
6f092e31 | 7842 | if (!flag_short_enums) |
e14bee04 | 7843 | return; |
7844 | ||
3b6a4b41 | 7845 | i = 0; |
7846 | do | |
7847 | { | |
7848 | kind = gfc_integer_kinds[i++].kind; | |
7849 | } | |
e14bee04 | 7850 | while (kind < gfc_c_int_kind |
3b6a4b41 | 7851 | && gfc_check_integer_range (max_enum->initializer->value.integer, |
7852 | kind) != ARITH_OK); | |
7853 | ||
7854 | current_history = enum_history; | |
7855 | while (current_history != NULL) | |
7856 | { | |
7857 | current_history->sym->ts.kind = kind; | |
7858 | current_history = current_history->next; | |
7859 | } | |
7860 | } | |
7861 | ||
1a9745d2 | 7862 | |
4ee9c684 | 7863 | /* Match any of the various end-block statements. Returns the type of |
6a7084d7 | 7864 | END to the caller. The END INTERFACE, END IF, END DO, END SELECT |
7865 | and END BLOCK statements cannot be replaced by a single END statement. */ | |
4ee9c684 | 7866 | |
7867 | match | |
1a9745d2 | 7868 | gfc_match_end (gfc_statement *st) |
4ee9c684 | 7869 | { |
7870 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7871 | gfc_compile_state state; | |
7872 | locus old_loc; | |
7873 | const char *block_name; | |
7874 | const char *target; | |
c0985832 | 7875 | int eos_ok; |
4ee9c684 | 7876 | match m; |
9e5e87d9 | 7877 | gfc_namespace *parent_ns, *ns, *prev_ns; |
7878 | gfc_namespace **nsp; | |
6ade726e | 7879 | bool abreviated_modproc_decl = false; |
cc7124a6 | 7880 | bool got_matching_end = false; |
4ee9c684 | 7881 | |
cbb9e6aa | 7882 | old_loc = gfc_current_locus; |
4ee9c684 | 7883 | if (gfc_match ("end") != MATCH_YES) |
7884 | return MATCH_NO; | |
7885 | ||
7886 | state = gfc_current_state (); | |
1a9745d2 | 7887 | block_name = gfc_current_block () == NULL |
7888 | ? NULL : gfc_current_block ()->name; | |
4ee9c684 | 7889 | |
d18a512a | 7890 | switch (state) |
4ee9c684 | 7891 | { |
d18a512a | 7892 | case COMP_ASSOCIATE: |
7893 | case COMP_BLOCK: | |
ea9e8242 | 7894 | if (gfc_str_startswith (block_name, "block@")) |
d18a512a | 7895 | block_name = NULL; |
7896 | break; | |
7897 | ||
7898 | case COMP_CONTAINS: | |
7899 | case COMP_DERIVED_CONTAINS: | |
4ee9c684 | 7900 | state = gfc_state_stack->previous->state; |
1a9745d2 | 7901 | block_name = gfc_state_stack->previous->sym == NULL |
7902 | ? NULL : gfc_state_stack->previous->sym->name; | |
6ade726e | 7903 | abreviated_modproc_decl = gfc_state_stack->previous->sym |
7904 | && gfc_state_stack->previous->sym->abr_modproc_decl; | |
d18a512a | 7905 | break; |
7906 | ||
7907 | default: | |
7908 | break; | |
4ee9c684 | 7909 | } |
7910 | ||
6ade726e | 7911 | if (!abreviated_modproc_decl) |
7912 | abreviated_modproc_decl = gfc_current_block () | |
7913 | && gfc_current_block ()->abr_modproc_decl; | |
4b8eb6ca | 7914 | |
4ee9c684 | 7915 | switch (state) |
7916 | { | |
7917 | case COMP_NONE: | |
7918 | case COMP_PROGRAM: | |
7919 | *st = ST_END_PROGRAM; | |
7920 | target = " program"; | |
c0985832 | 7921 | eos_ok = 1; |
4ee9c684 | 7922 | break; |
7923 | ||
7924 | case COMP_SUBROUTINE: | |
7925 | *st = ST_END_SUBROUTINE; | |
4b8eb6ca | 7926 | if (!abreviated_modproc_decl) |
4ee9c684 | 7927 | target = " subroutine"; |
4b8eb6ca | 7928 | else |
7929 | target = " procedure"; | |
c0985832 | 7930 | eos_ok = !contained_procedure (); |
4ee9c684 | 7931 | break; |
7932 | ||
7933 | case COMP_FUNCTION: | |
7934 | *st = ST_END_FUNCTION; | |
4b8eb6ca | 7935 | if (!abreviated_modproc_decl) |
4ee9c684 | 7936 | target = " function"; |
4b8eb6ca | 7937 | else |
7938 | target = " procedure"; | |
c0985832 | 7939 | eos_ok = !contained_procedure (); |
4ee9c684 | 7940 | break; |
7941 | ||
7942 | case COMP_BLOCK_DATA: | |
7943 | *st = ST_END_BLOCK_DATA; | |
7944 | target = " block data"; | |
c0985832 | 7945 | eos_ok = 1; |
4ee9c684 | 7946 | break; |
7947 | ||
7948 | case COMP_MODULE: | |
7949 | *st = ST_END_MODULE; | |
7950 | target = " module"; | |
c0985832 | 7951 | eos_ok = 1; |
4ee9c684 | 7952 | break; |
7953 | ||
4b8eb6ca | 7954 | case COMP_SUBMODULE: |
7955 | *st = ST_END_SUBMODULE; | |
7956 | target = " submodule"; | |
7957 | eos_ok = 1; | |
7958 | break; | |
7959 | ||
4ee9c684 | 7960 | case COMP_INTERFACE: |
7961 | *st = ST_END_INTERFACE; | |
7962 | target = " interface"; | |
c0985832 | 7963 | eos_ok = 0; |
4ee9c684 | 7964 | break; |
7965 | ||
d7cd448a | 7966 | case COMP_MAP: |
7967 | *st = ST_END_MAP; | |
7968 | target = " map"; | |
7969 | eos_ok = 0; | |
7970 | break; | |
7971 | ||
7972 | case COMP_UNION: | |
7973 | *st = ST_END_UNION; | |
7974 | target = " union"; | |
7975 | eos_ok = 0; | |
7976 | break; | |
7977 | ||
7978 | case COMP_STRUCTURE: | |
7979 | *st = ST_END_STRUCTURE; | |
7980 | target = " structure"; | |
7981 | eos_ok = 0; | |
7982 | break; | |
7983 | ||
4ee9c684 | 7984 | case COMP_DERIVED: |
7fd88f6e | 7985 | case COMP_DERIVED_CONTAINS: |
4ee9c684 | 7986 | *st = ST_END_TYPE; |
7987 | target = " type"; | |
c0985832 | 7988 | eos_ok = 0; |
4ee9c684 | 7989 | break; |
7990 | ||
d18a512a | 7991 | case COMP_ASSOCIATE: |
7992 | *st = ST_END_ASSOCIATE; | |
7993 | target = " associate"; | |
7994 | eos_ok = 0; | |
7995 | break; | |
7996 | ||
6a7084d7 | 7997 | case COMP_BLOCK: |
7998 | *st = ST_END_BLOCK; | |
7999 | target = " block"; | |
8000 | eos_ok = 0; | |
8001 | break; | |
8002 | ||
4ee9c684 | 8003 | case COMP_IF: |
8004 | *st = ST_ENDIF; | |
8005 | target = " if"; | |
c0985832 | 8006 | eos_ok = 0; |
4ee9c684 | 8007 | break; |
8008 | ||
8009 | case COMP_DO: | |
55ea8666 | 8010 | case COMP_DO_CONCURRENT: |
4ee9c684 | 8011 | *st = ST_ENDDO; |
8012 | target = " do"; | |
c0985832 | 8013 | eos_ok = 0; |
4ee9c684 | 8014 | break; |
8015 | ||
c6cd3066 | 8016 | case COMP_CRITICAL: |
8017 | *st = ST_END_CRITICAL; | |
8018 | target = " critical"; | |
8019 | eos_ok = 0; | |
8020 | break; | |
8021 | ||
4ee9c684 | 8022 | case COMP_SELECT: |
1de1b1a9 | 8023 | case COMP_SELECT_TYPE: |
4ee9c684 | 8024 | *st = ST_END_SELECT; |
8025 | target = " select"; | |
c0985832 | 8026 | eos_ok = 0; |
4ee9c684 | 8027 | break; |
8028 | ||
8029 | case COMP_FORALL: | |
8030 | *st = ST_END_FORALL; | |
8031 | target = " forall"; | |
c0985832 | 8032 | eos_ok = 0; |
4ee9c684 | 8033 | break; |
8034 | ||
8035 | case COMP_WHERE: | |
8036 | *st = ST_END_WHERE; | |
8037 | target = " where"; | |
c0985832 | 8038 | eos_ok = 0; |
4ee9c684 | 8039 | break; |
8040 | ||
3b6a4b41 | 8041 | case COMP_ENUM: |
8042 | *st = ST_END_ENUM; | |
8043 | target = " enum"; | |
8044 | eos_ok = 0; | |
8045 | last_initializer = NULL; | |
8046 | set_enum_kind (); | |
8047 | gfc_free_enum_history (); | |
8048 | break; | |
8049 | ||
4ee9c684 | 8050 | default: |
8051 | gfc_error ("Unexpected END statement at %C"); | |
8052 | goto cleanup; | |
8053 | } | |
8054 | ||
8d779aef | 8055 | old_loc = gfc_current_locus; |
4ee9c684 | 8056 | if (gfc_match_eos () == MATCH_YES) |
8057 | { | |
4b20e9cf | 8058 | if (!eos_ok && (*st == ST_END_SUBROUTINE || *st == ST_END_FUNCTION)) |
8059 | { | |
60e19868 | 8060 | if (!gfc_notify_std (GFC_STD_F2008, "END statement " |
76e207a9 | 8061 | "instead of %s statement at %L", |
4b8eb6ca | 8062 | abreviated_modproc_decl ? "END PROCEDURE" |
8063 | : gfc_ascii_statement(*st), &old_loc)) | |
4b20e9cf | 8064 | goto cleanup; |
8065 | } | |
8066 | else if (!eos_ok) | |
4ee9c684 | 8067 | { |
f6d0e37a | 8068 | /* We would have required END [something]. */ |
d197c9ee | 8069 | gfc_error ("%s statement expected at %L", |
8070 | gfc_ascii_statement (*st), &old_loc); | |
4ee9c684 | 8071 | goto cleanup; |
8072 | } | |
8073 | ||
8074 | return MATCH_YES; | |
8075 | } | |
8076 | ||
8077 | /* Verify that we've got the sort of end-block that we're expecting. */ | |
8078 | if (gfc_match (target) != MATCH_YES) | |
8079 | { | |
4b8eb6ca | 8080 | gfc_error ("Expecting %s statement at %L", abreviated_modproc_decl |
8081 | ? "END PROCEDURE" : gfc_ascii_statement(*st), &old_loc); | |
4ee9c684 | 8082 | goto cleanup; |
8083 | } | |
cc7124a6 | 8084 | else |
8085 | got_matching_end = true; | |
4ee9c684 | 8086 | |
8d779aef | 8087 | old_loc = gfc_current_locus; |
4ee9c684 | 8088 | /* If we're at the end, make sure a block name wasn't required. */ |
8089 | if (gfc_match_eos () == MATCH_YES) | |
8090 | { | |
8091 | ||
0d0ce415 | 8092 | if (*st != ST_ENDDO && *st != ST_ENDIF && *st != ST_END_SELECT |
c6cd3066 | 8093 | && *st != ST_END_FORALL && *st != ST_END_WHERE && *st != ST_END_BLOCK |
d18a512a | 8094 | && *st != ST_END_ASSOCIATE && *st != ST_END_CRITICAL) |
4ee9c684 | 8095 | return MATCH_YES; |
8096 | ||
6a7084d7 | 8097 | if (!block_name) |
4ee9c684 | 8098 | return MATCH_YES; |
8099 | ||
716da296 | 8100 | gfc_error ("Expected block name of %qs in %s statement at %L", |
8d779aef | 8101 | block_name, gfc_ascii_statement (*st), &old_loc); |
4ee9c684 | 8102 | |
8103 | return MATCH_ERROR; | |
8104 | } | |
8105 | ||
8106 | /* END INTERFACE has a special handler for its several possible endings. */ | |
8107 | if (*st == ST_END_INTERFACE) | |
8108 | return gfc_match_end_interface (); | |
8109 | ||
f6d0e37a | 8110 | /* We haven't hit the end of statement, so what is left must be an |
8111 | end-name. */ | |
4ee9c684 | 8112 | m = gfc_match_space (); |
8113 | if (m == MATCH_YES) | |
8114 | m = gfc_match_name (name); | |
8115 | ||
8116 | if (m == MATCH_NO) | |
8117 | gfc_error ("Expected terminating name at %C"); | |
8118 | if (m != MATCH_YES) | |
8119 | goto cleanup; | |
8120 | ||
8121 | if (block_name == NULL) | |
8122 | goto syntax; | |
8123 | ||
df8f279f | 8124 | /* We have to pick out the declared submodule name from the composite |
8125 | required by F2008:11.2.3 para 2, which ends in the declared name. */ | |
8126 | if (state == COMP_SUBMODULE) | |
8127 | block_name = strchr (block_name, '.') + 1; | |
8128 | ||
1e057e9b | 8129 | if (strcmp (name, block_name) != 0 && strcmp (block_name, "ppr@") != 0) |
4ee9c684 | 8130 | { |
716da296 | 8131 | gfc_error ("Expected label %qs for %s statement at %C", block_name, |
4ee9c684 | 8132 | gfc_ascii_statement (*st)); |
8133 | goto cleanup; | |
8134 | } | |
1e057e9b | 8135 | /* Procedure pointer as function result. */ |
8136 | else if (strcmp (block_name, "ppr@") == 0 | |
8137 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) != 0) | |
8138 | { | |
716da296 | 8139 | gfc_error ("Expected label %qs for %s statement at %C", |
1e057e9b | 8140 | gfc_current_block ()->ns->proc_name->name, |
8141 | gfc_ascii_statement (*st)); | |
8142 | goto cleanup; | |
8143 | } | |
4ee9c684 | 8144 | |
8145 | if (gfc_match_eos () == MATCH_YES) | |
8146 | return MATCH_YES; | |
8147 | ||
8148 | syntax: | |
8149 | gfc_syntax_error (*st); | |
8150 | ||
8151 | cleanup: | |
cbb9e6aa | 8152 | gfc_current_locus = old_loc; |
9e5e87d9 | 8153 | |
8154 | /* If we are missing an END BLOCK, we created a half-ready namespace. | |
8155 | Remove it from the parent namespace's sibling list. */ | |
8156 | ||
cc7124a6 | 8157 | while (state == COMP_BLOCK && !got_matching_end) |
9e5e87d9 | 8158 | { |
8159 | parent_ns = gfc_current_ns->parent; | |
8160 | ||
8161 | nsp = &(gfc_state_stack->previous->tail->ext.block.ns); | |
8162 | ||
8163 | prev_ns = NULL; | |
8164 | ns = *nsp; | |
8165 | while (ns) | |
8166 | { | |
8167 | if (ns == gfc_current_ns) | |
8168 | { | |
8169 | if (prev_ns == NULL) | |
8170 | *nsp = NULL; | |
8171 | else | |
8172 | prev_ns->sibling = ns->sibling; | |
8173 | } | |
8174 | prev_ns = ns; | |
8175 | ns = ns->sibling; | |
8176 | } | |
cc7124a6 | 8177 | |
9e5e87d9 | 8178 | gfc_free_namespace (gfc_current_ns); |
8179 | gfc_current_ns = parent_ns; | |
8097c1a6 | 8180 | gfc_state_stack = gfc_state_stack->previous; |
8181 | state = gfc_current_state (); | |
9e5e87d9 | 8182 | } |
8183 | ||
4ee9c684 | 8184 | return MATCH_ERROR; |
8185 | } | |
8186 | ||
8187 | ||
8188 | ||
8189 | /***************** Attribute declaration statements ****************/ | |
8190 | ||
8191 | /* Set the attribute of a single variable. */ | |
8192 | ||
8193 | static match | |
8194 | attr_decl1 (void) | |
8195 | { | |
8196 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8197 | gfc_array_spec *as; | |
75e5ecf3 | 8198 | |
8199 | /* Workaround -Wmaybe-uninitialized false positive during | |
8200 | profiledbootstrap by initializing them. */ | |
8201 | gfc_symbol *sym = NULL; | |
4ee9c684 | 8202 | locus var_locus; |
8203 | match m; | |
8204 | ||
8205 | as = NULL; | |
8206 | ||
8207 | m = gfc_match_name (name); | |
8208 | if (m != MATCH_YES) | |
8209 | goto cleanup; | |
8210 | ||
36b0a1b0 | 8211 | if (find_special (name, &sym, false)) |
4ee9c684 | 8212 | return MATCH_ERROR; |
8213 | ||
60e19868 | 8214 | if (!check_function_name (name)) |
f3e89339 | 8215 | { |
8216 | m = MATCH_ERROR; | |
8217 | goto cleanup; | |
8218 | } | |
8db94b3b | 8219 | |
cbb9e6aa | 8220 | var_locus = gfc_current_locus; |
4ee9c684 | 8221 | |
8222 | /* Deal with possible array specification for certain attributes. */ | |
8223 | if (current_attr.dimension | |
aff518b0 | 8224 | || current_attr.codimension |
4ee9c684 | 8225 | || current_attr.allocatable |
8226 | || current_attr.pointer | |
8227 | || current_attr.target) | |
8228 | { | |
aff518b0 | 8229 | m = gfc_match_array_spec (&as, !current_attr.codimension, |
8230 | !current_attr.dimension | |
8231 | && !current_attr.pointer | |
8232 | && !current_attr.target); | |
4ee9c684 | 8233 | if (m == MATCH_ERROR) |
8234 | goto cleanup; | |
8235 | ||
8236 | if (current_attr.dimension && m == MATCH_NO) | |
8237 | { | |
1a9745d2 | 8238 | gfc_error ("Missing array specification at %L in DIMENSION " |
8239 | "statement", &var_locus); | |
4ee9c684 | 8240 | m = MATCH_ERROR; |
8241 | goto cleanup; | |
8242 | } | |
8243 | ||
13aebeb0 | 8244 | if (current_attr.dimension && sym->value) |
8245 | { | |
8246 | gfc_error ("Dimensions specified for %s at %L after its " | |
d0abd9e0 | 8247 | "initialization", sym->name, &var_locus); |
13aebeb0 | 8248 | m = MATCH_ERROR; |
8249 | goto cleanup; | |
8250 | } | |
8251 | ||
aff518b0 | 8252 | if (current_attr.codimension && m == MATCH_NO) |
8253 | { | |
8254 | gfc_error ("Missing array specification at %L in CODIMENSION " | |
8255 | "statement", &var_locus); | |
8256 | m = MATCH_ERROR; | |
8257 | goto cleanup; | |
8258 | } | |
8259 | ||
4ee9c684 | 8260 | if ((current_attr.allocatable || current_attr.pointer) |
8261 | && (m == MATCH_YES) && (as->type != AS_DEFERRED)) | |
8262 | { | |
1a9745d2 | 8263 | gfc_error ("Array specification must be deferred at %L", &var_locus); |
4ee9c684 | 8264 | m = MATCH_ERROR; |
8265 | goto cleanup; | |
8266 | } | |
8267 | } | |
8268 | ||
b3704193 | 8269 | /* Update symbol table. DIMENSION attribute is set in |
8270 | gfc_set_array_spec(). For CLASS variables, this must be applied | |
607ae689 | 8271 | to the first component, or '_data' field. */ |
a33fbb6f | 8272 | if (sym->ts.type == BT_CLASS && sym->ts.u.derived->attr.is_class) |
4ee9c684 | 8273 | { |
60e19868 | 8274 | if (!gfc_copy_attr (&CLASS_DATA(sym)->attr, ¤t_attr, &var_locus)) |
b3704193 | 8275 | { |
8276 | m = MATCH_ERROR; | |
8277 | goto cleanup; | |
8278 | } | |
b3704193 | 8279 | } |
8280 | else | |
8281 | { | |
aff518b0 | 8282 | if (current_attr.dimension == 0 && current_attr.codimension == 0 |
60e19868 | 8283 | && !gfc_copy_attr (&sym->attr, ¤t_attr, &var_locus)) |
b3704193 | 8284 | { |
8285 | m = MATCH_ERROR; | |
8286 | goto cleanup; | |
8287 | } | |
4ee9c684 | 8288 | } |
8db94b3b | 8289 | |
fa102e56 | 8290 | if (sym->ts.type == BT_CLASS |
e8393d49 | 8291 | && !gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as)) |
29dae2bf | 8292 | { |
8293 | m = MATCH_ERROR; | |
8294 | goto cleanup; | |
8295 | } | |
4ee9c684 | 8296 | |
60e19868 | 8297 | if (!gfc_set_array_spec (sym, as, &var_locus)) |
4ee9c684 | 8298 | { |
8299 | m = MATCH_ERROR; | |
8300 | goto cleanup; | |
8301 | } | |
e14bee04 | 8302 | |
b549d2a5 | 8303 | if (sym->attr.cray_pointee && sym->as != NULL) |
8304 | { | |
8305 | /* Fix the array spec. */ | |
8db94b3b | 8306 | m = gfc_mod_pointee_as (sym->as); |
b549d2a5 | 8307 | if (m == MATCH_ERROR) |
8308 | goto cleanup; | |
8309 | } | |
4ee9c684 | 8310 | |
60e19868 | 8311 | if (!gfc_add_attribute (&sym->attr, &var_locus)) |
14efb9b7 | 8312 | { |
8313 | m = MATCH_ERROR; | |
8314 | goto cleanup; | |
8315 | } | |
8316 | ||
4ee9c684 | 8317 | if ((current_attr.external || current_attr.intrinsic) |
8318 | && sym->attr.flavor != FL_PROCEDURE | |
60e19868 | 8319 | && !gfc_add_flavor (&sym->attr, FL_PROCEDURE, sym->name, NULL)) |
4ee9c684 | 8320 | { |
8321 | m = MATCH_ERROR; | |
8322 | goto cleanup; | |
8323 | } | |
8324 | ||
1e057e9b | 8325 | add_hidden_procptr_result (sym); |
8326 | ||
4ee9c684 | 8327 | return MATCH_YES; |
8328 | ||
8329 | cleanup: | |
8330 | gfc_free_array_spec (as); | |
8331 | return m; | |
8332 | } | |
8333 | ||
8334 | ||
8335 | /* Generic attribute declaration subroutine. Used for attributes that | |
8336 | just have a list of names. */ | |
8337 | ||
8338 | static match | |
8339 | attr_decl (void) | |
8340 | { | |
8341 | match m; | |
8342 | ||
8343 | /* Gobble the optional double colon, by simply ignoring the result | |
8344 | of gfc_match(). */ | |
8345 | gfc_match (" ::"); | |
8346 | ||
8347 | for (;;) | |
8348 | { | |
8349 | m = attr_decl1 (); | |
8350 | if (m != MATCH_YES) | |
8351 | break; | |
8352 | ||
8353 | if (gfc_match_eos () == MATCH_YES) | |
8354 | { | |
8355 | m = MATCH_YES; | |
8356 | break; | |
8357 | } | |
8358 | ||
8359 | if (gfc_match_char (',') != MATCH_YES) | |
8360 | { | |
8361 | gfc_error ("Unexpected character in variable list at %C"); | |
8362 | m = MATCH_ERROR; | |
8363 | break; | |
8364 | } | |
8365 | } | |
8366 | ||
8367 | return m; | |
8368 | } | |
8369 | ||
8370 | ||
b549d2a5 | 8371 | /* This routine matches Cray Pointer declarations of the form: |
8372 | pointer ( <pointer>, <pointee> ) | |
8373 | or | |
e14bee04 | 8374 | pointer ( <pointer1>, <pointee1> ), ( <pointer2>, <pointee2> ), ... |
8375 | The pointer, if already declared, should be an integer. Otherwise, we | |
b549d2a5 | 8376 | set it as BT_INTEGER with kind gfc_index_integer_kind. The pointee may |
8377 | be either a scalar, or an array declaration. No space is allocated for | |
e14bee04 | 8378 | the pointee. For the statement |
b549d2a5 | 8379 | pointer (ipt, ar(10)) |
8380 | any subsequent uses of ar will be translated (in C-notation) as | |
e14bee04 | 8381 | ar(i) => ((<type> *) ipt)(i) |
b7bf3f81 | 8382 | After gimplification, pointee variable will disappear in the code. */ |
b549d2a5 | 8383 | |
8384 | static match | |
8385 | cray_pointer_decl (void) | |
8386 | { | |
8387 | match m; | |
aff518b0 | 8388 | gfc_array_spec *as = NULL; |
b549d2a5 | 8389 | gfc_symbol *cptr; /* Pointer symbol. */ |
8390 | gfc_symbol *cpte; /* Pointee symbol. */ | |
8391 | locus var_locus; | |
8392 | bool done = false; | |
8393 | ||
8394 | while (!done) | |
8395 | { | |
8396 | if (gfc_match_char ('(') != MATCH_YES) | |
8397 | { | |
0d2b3c9c | 8398 | gfc_error ("Expected %<(%> at %C"); |
e14bee04 | 8399 | return MATCH_ERROR; |
b549d2a5 | 8400 | } |
e14bee04 | 8401 | |
b549d2a5 | 8402 | /* Match pointer. */ |
8403 | var_locus = gfc_current_locus; | |
8404 | gfc_clear_attr (¤t_attr); | |
8405 | gfc_add_cray_pointer (¤t_attr, &var_locus); | |
8406 | current_ts.type = BT_INTEGER; | |
8407 | current_ts.kind = gfc_index_integer_kind; | |
8408 | ||
e14bee04 | 8409 | m = gfc_match_symbol (&cptr, 0); |
b549d2a5 | 8410 | if (m != MATCH_YES) |
8411 | { | |
8412 | gfc_error ("Expected variable name at %C"); | |
8413 | return m; | |
8414 | } | |
e14bee04 | 8415 | |
60e19868 | 8416 | if (!gfc_add_cray_pointer (&cptr->attr, &var_locus)) |
b549d2a5 | 8417 | return MATCH_ERROR; |
8418 | ||
e14bee04 | 8419 | gfc_set_sym_referenced (cptr); |
b549d2a5 | 8420 | |
8421 | if (cptr->ts.type == BT_UNKNOWN) /* Override the type, if necessary. */ | |
8422 | { | |
8423 | cptr->ts.type = BT_INTEGER; | |
e14bee04 | 8424 | cptr->ts.kind = gfc_index_integer_kind; |
b549d2a5 | 8425 | } |
8426 | else if (cptr->ts.type != BT_INTEGER) | |
8427 | { | |
7698a624 | 8428 | gfc_error ("Cray pointer at %C must be an integer"); |
b549d2a5 | 8429 | return MATCH_ERROR; |
8430 | } | |
8431 | else if (cptr->ts.kind < gfc_index_integer_kind) | |
6f521718 | 8432 | gfc_warning (0, "Cray pointer at %C has %d bytes of precision;" |
7698a624 | 8433 | " memory addresses require %d bytes", |
1a9745d2 | 8434 | cptr->ts.kind, gfc_index_integer_kind); |
b549d2a5 | 8435 | |
8436 | if (gfc_match_char (',') != MATCH_YES) | |
8437 | { | |
8438 | gfc_error ("Expected \",\" at %C"); | |
e14bee04 | 8439 | return MATCH_ERROR; |
b549d2a5 | 8440 | } |
8441 | ||
e14bee04 | 8442 | /* Match Pointee. */ |
b549d2a5 | 8443 | var_locus = gfc_current_locus; |
8444 | gfc_clear_attr (¤t_attr); | |
8445 | gfc_add_cray_pointee (¤t_attr, &var_locus); | |
8446 | current_ts.type = BT_UNKNOWN; | |
8447 | current_ts.kind = 0; | |
8448 | ||
8449 | m = gfc_match_symbol (&cpte, 0); | |
8450 | if (m != MATCH_YES) | |
8451 | { | |
8452 | gfc_error ("Expected variable name at %C"); | |
8453 | return m; | |
8454 | } | |
e14bee04 | 8455 | |
b549d2a5 | 8456 | /* Check for an optional array spec. */ |
aff518b0 | 8457 | m = gfc_match_array_spec (&as, true, false); |
b549d2a5 | 8458 | if (m == MATCH_ERROR) |
8459 | { | |
8460 | gfc_free_array_spec (as); | |
8461 | return m; | |
8462 | } | |
8463 | else if (m == MATCH_NO) | |
8464 | { | |
8465 | gfc_free_array_spec (as); | |
8466 | as = NULL; | |
8db94b3b | 8467 | } |
b549d2a5 | 8468 | |
60e19868 | 8469 | if (!gfc_add_cray_pointee (&cpte->attr, &var_locus)) |
b549d2a5 | 8470 | return MATCH_ERROR; |
8471 | ||
8472 | gfc_set_sym_referenced (cpte); | |
8473 | ||
8474 | if (cpte->as == NULL) | |
8475 | { | |
60e19868 | 8476 | if (!gfc_set_array_spec (cpte, as, &var_locus)) |
b549d2a5 | 8477 | gfc_internal_error ("Couldn't set Cray pointee array spec."); |
8478 | } | |
8479 | else if (as != NULL) | |
8480 | { | |
7698a624 | 8481 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
b549d2a5 | 8482 | gfc_free_array_spec (as); |
8483 | return MATCH_ERROR; | |
8484 | } | |
8db94b3b | 8485 | |
b549d2a5 | 8486 | as = NULL; |
8db94b3b | 8487 | |
b549d2a5 | 8488 | if (cpte->as != NULL) |
8489 | { | |
8490 | /* Fix array spec. */ | |
8491 | m = gfc_mod_pointee_as (cpte->as); | |
8492 | if (m == MATCH_ERROR) | |
8493 | return m; | |
8db94b3b | 8494 | } |
8495 | ||
b549d2a5 | 8496 | /* Point the Pointee at the Pointer. */ |
b7bf3f81 | 8497 | cpte->cp_pointer = cptr; |
b549d2a5 | 8498 | |
8499 | if (gfc_match_char (')') != MATCH_YES) | |
8500 | { | |
8501 | gfc_error ("Expected \")\" at %C"); | |
8db94b3b | 8502 | return MATCH_ERROR; |
b549d2a5 | 8503 | } |
8504 | m = gfc_match_char (','); | |
8505 | if (m != MATCH_YES) | |
8506 | done = true; /* Stop searching for more declarations. */ | |
8507 | ||
8508 | } | |
8db94b3b | 8509 | |
b549d2a5 | 8510 | if (m == MATCH_ERROR /* Failed when trying to find ',' above. */ |
8511 | || gfc_match_eos () != MATCH_YES) | |
8512 | { | |
0d2b3c9c | 8513 | gfc_error ("Expected %<,%> or end of statement at %C"); |
b549d2a5 | 8514 | return MATCH_ERROR; |
8515 | } | |
8516 | return MATCH_YES; | |
8517 | } | |
8518 | ||
8519 | ||
4ee9c684 | 8520 | match |
8521 | gfc_match_external (void) | |
8522 | { | |
8523 | ||
8524 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 8525 | current_attr.external = 1; |
4ee9c684 | 8526 | |
8527 | return attr_decl (); | |
8528 | } | |
8529 | ||
8530 | ||
4ee9c684 | 8531 | match |
8532 | gfc_match_intent (void) | |
8533 | { | |
8534 | sym_intent intent; | |
8535 | ||
6a7084d7 | 8536 | /* This is not allowed within a BLOCK construct! */ |
8537 | if (gfc_current_state () == COMP_BLOCK) | |
8538 | { | |
8539 | gfc_error ("INTENT is not allowed inside of BLOCK at %C"); | |
8540 | return MATCH_ERROR; | |
8541 | } | |
8542 | ||
4ee9c684 | 8543 | intent = match_intent_spec (); |
8544 | if (intent == INTENT_UNKNOWN) | |
8545 | return MATCH_ERROR; | |
8546 | ||
8547 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 8548 | current_attr.intent = intent; |
4ee9c684 | 8549 | |
8550 | return attr_decl (); | |
8551 | } | |
8552 | ||
8553 | ||
8554 | match | |
8555 | gfc_match_intrinsic (void) | |
8556 | { | |
8557 | ||
8558 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 8559 | current_attr.intrinsic = 1; |
4ee9c684 | 8560 | |
8561 | return attr_decl (); | |
8562 | } | |
8563 | ||
8564 | ||
8565 | match | |
8566 | gfc_match_optional (void) | |
8567 | { | |
6a7084d7 | 8568 | /* This is not allowed within a BLOCK construct! */ |
8569 | if (gfc_current_state () == COMP_BLOCK) | |
8570 | { | |
8571 | gfc_error ("OPTIONAL is not allowed inside of BLOCK at %C"); | |
8572 | return MATCH_ERROR; | |
8573 | } | |
4ee9c684 | 8574 | |
8575 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 8576 | current_attr.optional = 1; |
4ee9c684 | 8577 | |
8578 | return attr_decl (); | |
8579 | } | |
8580 | ||
8581 | ||
8582 | match | |
8583 | gfc_match_pointer (void) | |
8584 | { | |
b549d2a5 | 8585 | gfc_gobble_whitespace (); |
e0be6f02 | 8586 | if (gfc_peek_ascii_char () == '(') |
b549d2a5 | 8587 | { |
829d7a08 | 8588 | if (!flag_cray_pointer) |
b549d2a5 | 8589 | { |
1a9745d2 | 8590 | gfc_error ("Cray pointer declaration at %C requires -fcray-pointer " |
8591 | "flag"); | |
b549d2a5 | 8592 | return MATCH_ERROR; |
8593 | } | |
8594 | return cray_pointer_decl (); | |
8595 | } | |
8596 | else | |
8597 | { | |
8598 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 8599 | current_attr.pointer = 1; |
8db94b3b | 8600 | |
b549d2a5 | 8601 | return attr_decl (); |
8602 | } | |
4ee9c684 | 8603 | } |
8604 | ||
8605 | ||
8606 | match | |
8607 | gfc_match_allocatable (void) | |
8608 | { | |
4ee9c684 | 8609 | gfc_clear_attr (¤t_attr); |
14efb9b7 | 8610 | current_attr.allocatable = 1; |
4ee9c684 | 8611 | |
8612 | return attr_decl (); | |
8613 | } | |
8614 | ||
8615 | ||
aff518b0 | 8616 | match |
8617 | gfc_match_codimension (void) | |
8618 | { | |
8619 | gfc_clear_attr (¤t_attr); | |
8620 | current_attr.codimension = 1; | |
8621 | ||
8622 | return attr_decl (); | |
8623 | } | |
8624 | ||
8625 | ||
b3c3927c | 8626 | match |
8627 | gfc_match_contiguous (void) | |
8628 | { | |
60e19868 | 8629 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS statement at %C")) |
b3c3927c | 8630 | return MATCH_ERROR; |
8631 | ||
8632 | gfc_clear_attr (¤t_attr); | |
8633 | current_attr.contiguous = 1; | |
8634 | ||
8635 | return attr_decl (); | |
8636 | } | |
8637 | ||
8638 | ||
4ee9c684 | 8639 | match |
8640 | gfc_match_dimension (void) | |
8641 | { | |
4ee9c684 | 8642 | gfc_clear_attr (¤t_attr); |
14efb9b7 | 8643 | current_attr.dimension = 1; |
4ee9c684 | 8644 | |
8645 | return attr_decl (); | |
8646 | } | |
8647 | ||
8648 | ||
8649 | match | |
8650 | gfc_match_target (void) | |
8651 | { | |
4ee9c684 | 8652 | gfc_clear_attr (¤t_attr); |
14efb9b7 | 8653 | current_attr.target = 1; |
4ee9c684 | 8654 | |
8655 | return attr_decl (); | |
8656 | } | |
8657 | ||
8658 | ||
8659 | /* Match the list of entities being specified in a PUBLIC or PRIVATE | |
8660 | statement. */ | |
8661 | ||
8662 | static match | |
8663 | access_attr_decl (gfc_statement st) | |
8664 | { | |
8665 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8666 | interface_type type; | |
8667 | gfc_user_op *uop; | |
c2958b6b | 8668 | gfc_symbol *sym, *dt_sym; |
dcb1b019 | 8669 | gfc_intrinsic_op op; |
4ee9c684 | 8670 | match m; |
8671 | ||
8672 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8673 | goto done; | |
8674 | ||
8675 | for (;;) | |
8676 | { | |
dcb1b019 | 8677 | m = gfc_match_generic_spec (&type, name, &op); |
4ee9c684 | 8678 | if (m == MATCH_NO) |
8679 | goto syntax; | |
8680 | if (m == MATCH_ERROR) | |
8681 | return MATCH_ERROR; | |
8682 | ||
8683 | switch (type) | |
8684 | { | |
8685 | case INTERFACE_NAMELESS: | |
94fa7146 | 8686 | case INTERFACE_ABSTRACT: |
4ee9c684 | 8687 | goto syntax; |
8688 | ||
8689 | case INTERFACE_GENERIC: | |
9f732c4e | 8690 | case INTERFACE_DTIO: |
2f78ea2e | 8691 | |
4ee9c684 | 8692 | if (gfc_get_symbol (name, NULL, &sym)) |
8693 | goto done; | |
8694 | ||
7966c683 | 8695 | if (type == INTERFACE_DTIO |
8696 | && gfc_current_ns->proc_name | |
8697 | && gfc_current_ns->proc_name->attr.flavor == FL_MODULE | |
8698 | && sym->attr.flavor == FL_UNKNOWN) | |
8699 | sym->attr.flavor = FL_PROCEDURE; | |
8700 | ||
76e207a9 | 8701 | if (!gfc_add_access (&sym->attr, |
8702 | (st == ST_PUBLIC) | |
8703 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
60e19868 | 8704 | sym->name, NULL)) |
4ee9c684 | 8705 | return MATCH_ERROR; |
8706 | ||
c2958b6b | 8707 | if (sym->attr.generic && (dt_sym = gfc_find_dt_in_generic (sym)) |
76e207a9 | 8708 | && !gfc_add_access (&dt_sym->attr, |
8709 | (st == ST_PUBLIC) | |
8710 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
60e19868 | 8711 | sym->name, NULL)) |
c2958b6b | 8712 | return MATCH_ERROR; |
8713 | ||
4ee9c684 | 8714 | break; |
8715 | ||
8716 | case INTERFACE_INTRINSIC_OP: | |
dcb1b019 | 8717 | if (gfc_current_ns->operator_access[op] == ACCESS_UNKNOWN) |
4ee9c684 | 8718 | { |
0c482c1d | 8719 | gfc_intrinsic_op other_op; |
8720 | ||
dcb1b019 | 8721 | gfc_current_ns->operator_access[op] = |
4ee9c684 | 8722 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; |
0c482c1d | 8723 | |
8724 | /* Handle the case if there is another op with the same | |
8725 | function, for INTRINSIC_EQ vs. INTRINSIC_EQ_OS and so on. */ | |
8726 | other_op = gfc_equivalent_op (op); | |
8727 | ||
8728 | if (other_op != INTRINSIC_NONE) | |
8729 | gfc_current_ns->operator_access[other_op] = | |
8730 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
8731 | ||
4ee9c684 | 8732 | } |
8733 | else | |
8734 | { | |
8735 | gfc_error ("Access specification of the %s operator at %C has " | |
dcb1b019 | 8736 | "already been specified", gfc_op2string (op)); |
4ee9c684 | 8737 | goto done; |
8738 | } | |
8739 | ||
8740 | break; | |
8741 | ||
8742 | case INTERFACE_USER_OP: | |
8743 | uop = gfc_get_uop (name); | |
8744 | ||
8745 | if (uop->access == ACCESS_UNKNOWN) | |
8746 | { | |
1a9745d2 | 8747 | uop->access = (st == ST_PUBLIC) |
8748 | ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
4ee9c684 | 8749 | } |
8750 | else | |
8751 | { | |
1a9745d2 | 8752 | gfc_error ("Access specification of the .%s. operator at %C " |
8753 | "has already been specified", sym->name); | |
4ee9c684 | 8754 | goto done; |
8755 | } | |
8756 | ||
8757 | break; | |
8758 | } | |
8759 | ||
8760 | if (gfc_match_char (',') == MATCH_NO) | |
8761 | break; | |
8762 | } | |
8763 | ||
8764 | if (gfc_match_eos () != MATCH_YES) | |
8765 | goto syntax; | |
8766 | return MATCH_YES; | |
8767 | ||
8768 | syntax: | |
8769 | gfc_syntax_error (st); | |
8770 | ||
8771 | done: | |
8772 | return MATCH_ERROR; | |
8773 | } | |
8774 | ||
8775 | ||
3ea52af3 | 8776 | match |
8777 | gfc_match_protected (void) | |
8778 | { | |
8779 | gfc_symbol *sym; | |
8780 | match m; | |
8781 | ||
54c0257b | 8782 | if (!gfc_current_ns->proc_name |
8783 | || gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
3ea52af3 | 8784 | { |
8785 | gfc_error ("PROTECTED at %C only allowed in specification " | |
8786 | "part of a module"); | |
8787 | return MATCH_ERROR; | |
8788 | ||
8789 | } | |
8790 | ||
60e19868 | 8791 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED statement at %C")) |
3ea52af3 | 8792 | return MATCH_ERROR; |
8793 | ||
8794 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8795 | { | |
8796 | return MATCH_ERROR; | |
8797 | } | |
8798 | ||
8799 | if (gfc_match_eos () == MATCH_YES) | |
8800 | goto syntax; | |
8801 | ||
8802 | for(;;) | |
8803 | { | |
8804 | m = gfc_match_symbol (&sym, 0); | |
8805 | switch (m) | |
8806 | { | |
8807 | case MATCH_YES: | |
60e19868 | 8808 | if (!gfc_add_protected (&sym->attr, sym->name, &gfc_current_locus)) |
3ea52af3 | 8809 | return MATCH_ERROR; |
8810 | goto next_item; | |
8811 | ||
8812 | case MATCH_NO: | |
8813 | break; | |
8814 | ||
8815 | case MATCH_ERROR: | |
8816 | return MATCH_ERROR; | |
8817 | } | |
8818 | ||
8819 | next_item: | |
8820 | if (gfc_match_eos () == MATCH_YES) | |
8821 | break; | |
8822 | if (gfc_match_char (',') != MATCH_YES) | |
8823 | goto syntax; | |
8824 | } | |
8825 | ||
8826 | return MATCH_YES; | |
8827 | ||
8828 | syntax: | |
8829 | gfc_error ("Syntax error in PROTECTED statement at %C"); | |
8830 | return MATCH_ERROR; | |
8831 | } | |
8832 | ||
8833 | ||
a0527218 | 8834 | /* The PRIVATE statement is a bit weird in that it can be an attribute |
69b1505f | 8835 | declaration, but also works as a standalone statement inside of a |
4ee9c684 | 8836 | type declaration or a module. */ |
8837 | ||
8838 | match | |
1a9745d2 | 8839 | gfc_match_private (gfc_statement *st) |
4ee9c684 | 8840 | { |
8841 | ||
8842 | if (gfc_match ("private") != MATCH_YES) | |
8843 | return MATCH_NO; | |
8844 | ||
e14bee04 | 8845 | if (gfc_current_state () != COMP_MODULE |
7fd88f6e | 8846 | && !(gfc_current_state () == COMP_DERIVED |
8847 | && gfc_state_stack->previous | |
8848 | && gfc_state_stack->previous->state == COMP_MODULE) | |
8849 | && !(gfc_current_state () == COMP_DERIVED_CONTAINS | |
8850 | && gfc_state_stack->previous && gfc_state_stack->previous->previous | |
8851 | && gfc_state_stack->previous->previous->state == COMP_MODULE)) | |
e14bee04 | 8852 | { |
8853 | gfc_error ("PRIVATE statement at %C is only allowed in the " | |
8854 | "specification part of a module"); | |
8855 | return MATCH_ERROR; | |
8856 | } | |
8857 | ||
4ee9c684 | 8858 | if (gfc_current_state () == COMP_DERIVED) |
8859 | { | |
8860 | if (gfc_match_eos () == MATCH_YES) | |
8861 | { | |
8862 | *st = ST_PRIVATE; | |
8863 | return MATCH_YES; | |
8864 | } | |
8865 | ||
8866 | gfc_syntax_error (ST_PRIVATE); | |
8867 | return MATCH_ERROR; | |
8868 | } | |
8869 | ||
8870 | if (gfc_match_eos () == MATCH_YES) | |
8871 | { | |
8872 | *st = ST_PRIVATE; | |
8873 | return MATCH_YES; | |
8874 | } | |
8875 | ||
8876 | *st = ST_ATTR_DECL; | |
8877 | return access_attr_decl (ST_PRIVATE); | |
8878 | } | |
8879 | ||
8880 | ||
8881 | match | |
1a9745d2 | 8882 | gfc_match_public (gfc_statement *st) |
4ee9c684 | 8883 | { |
8884 | ||
8885 | if (gfc_match ("public") != MATCH_YES) | |
8886 | return MATCH_NO; | |
8887 | ||
e14bee04 | 8888 | if (gfc_current_state () != COMP_MODULE) |
8889 | { | |
8890 | gfc_error ("PUBLIC statement at %C is only allowed in the " | |
8891 | "specification part of a module"); | |
8892 | return MATCH_ERROR; | |
8893 | } | |
8894 | ||
4ee9c684 | 8895 | if (gfc_match_eos () == MATCH_YES) |
8896 | { | |
8897 | *st = ST_PUBLIC; | |
8898 | return MATCH_YES; | |
8899 | } | |
8900 | ||
8901 | *st = ST_ATTR_DECL; | |
8902 | return access_attr_decl (ST_PUBLIC); | |
8903 | } | |
8904 | ||
8905 | ||
8906 | /* Workhorse for gfc_match_parameter. */ | |
8907 | ||
8908 | static match | |
8909 | do_parm (void) | |
8910 | { | |
8911 | gfc_symbol *sym; | |
8912 | gfc_expr *init; | |
8913 | match m; | |
60e19868 | 8914 | bool t; |
4ee9c684 | 8915 | |
8916 | m = gfc_match_symbol (&sym, 0); | |
8917 | if (m == MATCH_NO) | |
8918 | gfc_error ("Expected variable name at %C in PARAMETER statement"); | |
8919 | ||
8920 | if (m != MATCH_YES) | |
8921 | return m; | |
8922 | ||
8923 | if (gfc_match_char ('=') == MATCH_NO) | |
8924 | { | |
8925 | gfc_error ("Expected = sign in PARAMETER statement at %C"); | |
8926 | return MATCH_ERROR; | |
8927 | } | |
8928 | ||
8929 | m = gfc_match_init_expr (&init); | |
8930 | if (m == MATCH_NO) | |
8931 | gfc_error ("Expected expression at %C in PARAMETER statement"); | |
8932 | if (m != MATCH_YES) | |
8933 | return m; | |
8934 | ||
8935 | if (sym->ts.type == BT_UNKNOWN | |
60e19868 | 8936 | && !gfc_set_default_type (sym, 1, NULL)) |
4ee9c684 | 8937 | { |
8938 | m = MATCH_ERROR; | |
8939 | goto cleanup; | |
8940 | } | |
8941 | ||
60e19868 | 8942 | if (!gfc_check_assign_symbol (sym, NULL, init) |
8943 | || !gfc_add_flavor (&sym->attr, FL_PARAMETER, sym->name, NULL)) | |
4ee9c684 | 8944 | { |
8945 | m = MATCH_ERROR; | |
8946 | goto cleanup; | |
8947 | } | |
8948 | ||
13aebeb0 | 8949 | if (sym->value) |
8950 | { | |
8951 | gfc_error ("Initializing already initialized variable at %C"); | |
8952 | m = MATCH_ERROR; | |
8953 | goto cleanup; | |
8954 | } | |
8955 | ||
f16404e3 | 8956 | t = add_init_expr_to_sym (sym->name, &init, &gfc_current_locus); |
60e19868 | 8957 | return (t) ? MATCH_YES : MATCH_ERROR; |
4ee9c684 | 8958 | |
8959 | cleanup: | |
8960 | gfc_free_expr (init); | |
8961 | return m; | |
8962 | } | |
8963 | ||
8964 | ||
8965 | /* Match a parameter statement, with the weird syntax that these have. */ | |
8966 | ||
8967 | match | |
8968 | gfc_match_parameter (void) | |
8969 | { | |
2c628787 | 8970 | const char *term = " )%t"; |
4ee9c684 | 8971 | match m; |
8972 | ||
8973 | if (gfc_match_char ('(') == MATCH_NO) | |
2c628787 | 8974 | { |
8975 | /* With legacy PARAMETER statements, don't expect a terminating ')'. */ | |
8976 | if (!gfc_notify_std (GFC_STD_LEGACY, "PARAMETER without '()' at %C")) | |
8977 | return MATCH_NO; | |
8978 | term = " %t"; | |
8979 | } | |
4ee9c684 | 8980 | |
8981 | for (;;) | |
8982 | { | |
8983 | m = do_parm (); | |
8984 | if (m != MATCH_YES) | |
8985 | break; | |
8986 | ||
2c628787 | 8987 | if (gfc_match (term) == MATCH_YES) |
4ee9c684 | 8988 | break; |
8989 | ||
8990 | if (gfc_match_char (',') != MATCH_YES) | |
8991 | { | |
8992 | gfc_error ("Unexpected characters in PARAMETER statement at %C"); | |
8993 | m = MATCH_ERROR; | |
8994 | break; | |
8995 | } | |
8996 | } | |
8997 | ||
8998 | return m; | |
8999 | } | |
9000 | ||
9001 | ||
8e652fcf | 9002 | match |
9003 | gfc_match_automatic (void) | |
9004 | { | |
9005 | gfc_symbol *sym; | |
9006 | match m; | |
9007 | bool seen_symbol = false; | |
9008 | ||
9009 | if (!flag_dec_static) | |
9010 | { | |
841da9cf | 9011 | gfc_error ("%s at %C is a DEC extension, enable with " |
9012 | "%<-fdec-static%>", | |
9013 | "AUTOMATIC" | |
9014 | ); | |
8e652fcf | 9015 | return MATCH_ERROR; |
9016 | } | |
9017 | ||
9018 | gfc_match (" ::"); | |
9019 | ||
9020 | for (;;) | |
9021 | { | |
9022 | m = gfc_match_symbol (&sym, 0); | |
9023 | switch (m) | |
9024 | { | |
9025 | case MATCH_NO: | |
9026 | break; | |
9027 | ||
9028 | case MATCH_ERROR: | |
9029 | return MATCH_ERROR; | |
9030 | ||
9031 | case MATCH_YES: | |
9032 | if (!gfc_add_automatic (&sym->attr, sym->name, &gfc_current_locus)) | |
9033 | return MATCH_ERROR; | |
9034 | seen_symbol = true; | |
9035 | break; | |
9036 | } | |
9037 | ||
9038 | if (gfc_match_eos () == MATCH_YES) | |
9039 | break; | |
9040 | if (gfc_match_char (',') != MATCH_YES) | |
9041 | goto syntax; | |
9042 | } | |
9043 | ||
9044 | if (!seen_symbol) | |
9045 | { | |
9046 | gfc_error ("Expected entity-list in AUTOMATIC statement at %C"); | |
9047 | return MATCH_ERROR; | |
9048 | } | |
9049 | ||
9050 | return MATCH_YES; | |
9051 | ||
9052 | syntax: | |
9053 | gfc_error ("Syntax error in AUTOMATIC statement at %C"); | |
9054 | return MATCH_ERROR; | |
9055 | } | |
9056 | ||
9057 | ||
9058 | match | |
9059 | gfc_match_static (void) | |
9060 | { | |
9061 | gfc_symbol *sym; | |
9062 | match m; | |
9063 | bool seen_symbol = false; | |
9064 | ||
9065 | if (!flag_dec_static) | |
9066 | { | |
841da9cf | 9067 | gfc_error ("%s at %C is a DEC extension, enable with " |
9068 | "%<-fdec-static%>", | |
9069 | "STATIC"); | |
8e652fcf | 9070 | return MATCH_ERROR; |
9071 | } | |
9072 | ||
9073 | gfc_match (" ::"); | |
9074 | ||
9075 | for (;;) | |
9076 | { | |
9077 | m = gfc_match_symbol (&sym, 0); | |
9078 | switch (m) | |
9079 | { | |
9080 | case MATCH_NO: | |
9081 | break; | |
9082 | ||
9083 | case MATCH_ERROR: | |
9084 | return MATCH_ERROR; | |
9085 | ||
9086 | case MATCH_YES: | |
9087 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, | |
9088 | &gfc_current_locus)) | |
9089 | return MATCH_ERROR; | |
9090 | seen_symbol = true; | |
9091 | break; | |
9092 | } | |
9093 | ||
9094 | if (gfc_match_eos () == MATCH_YES) | |
9095 | break; | |
9096 | if (gfc_match_char (',') != MATCH_YES) | |
9097 | goto syntax; | |
9098 | } | |
9099 | ||
9100 | if (!seen_symbol) | |
9101 | { | |
9102 | gfc_error ("Expected entity-list in STATIC statement at %C"); | |
9103 | return MATCH_ERROR; | |
9104 | } | |
9105 | ||
9106 | return MATCH_YES; | |
9107 | ||
9108 | syntax: | |
9109 | gfc_error ("Syntax error in STATIC statement at %C"); | |
9110 | return MATCH_ERROR; | |
9111 | } | |
9112 | ||
9113 | ||
4ee9c684 | 9114 | /* Save statements have a special syntax. */ |
9115 | ||
9116 | match | |
9117 | gfc_match_save (void) | |
9118 | { | |
82f5ee13 | 9119 | char n[GFC_MAX_SYMBOL_LEN+1]; |
9120 | gfc_common_head *c; | |
4ee9c684 | 9121 | gfc_symbol *sym; |
9122 | match m; | |
9123 | ||
9124 | if (gfc_match_eos () == MATCH_YES) | |
9125 | { | |
9126 | if (gfc_current_ns->seen_save) | |
9127 | { | |
60e19868 | 9128 | if (!gfc_notify_std (GFC_STD_LEGACY, "Blanket SAVE statement at %C " |
9129 | "follows previous SAVE statement")) | |
76e82f95 | 9130 | return MATCH_ERROR; |
4ee9c684 | 9131 | } |
9132 | ||
9133 | gfc_current_ns->save_all = gfc_current_ns->seen_save = 1; | |
9134 | return MATCH_YES; | |
9135 | } | |
9136 | ||
9137 | if (gfc_current_ns->save_all) | |
9138 | { | |
60e19868 | 9139 | if (!gfc_notify_std (GFC_STD_LEGACY, "SAVE statement at %C follows " |
9140 | "blanket SAVE statement")) | |
76e82f95 | 9141 | return MATCH_ERROR; |
4ee9c684 | 9142 | } |
9143 | ||
9144 | gfc_match (" ::"); | |
9145 | ||
9146 | for (;;) | |
9147 | { | |
9148 | m = gfc_match_symbol (&sym, 0); | |
9149 | switch (m) | |
9150 | { | |
9151 | case MATCH_YES: | |
76e207a9 | 9152 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, |
60e19868 | 9153 | &gfc_current_locus)) |
4ee9c684 | 9154 | return MATCH_ERROR; |
9155 | goto next_item; | |
9156 | ||
9157 | case MATCH_NO: | |
9158 | break; | |
9159 | ||
9160 | case MATCH_ERROR: | |
9161 | return MATCH_ERROR; | |
9162 | } | |
9163 | ||
82f5ee13 | 9164 | m = gfc_match (" / %n /", &n); |
4ee9c684 | 9165 | if (m == MATCH_ERROR) |
9166 | return MATCH_ERROR; | |
9167 | if (m == MATCH_NO) | |
9168 | goto syntax; | |
9169 | ||
403ddc45 | 9170 | c = gfc_get_common (n, 0); |
82f5ee13 | 9171 | c->saved = 1; |
9172 | ||
4ee9c684 | 9173 | gfc_current_ns->seen_save = 1; |
9174 | ||
9175 | next_item: | |
9176 | if (gfc_match_eos () == MATCH_YES) | |
9177 | break; | |
9178 | if (gfc_match_char (',') != MATCH_YES) | |
9179 | goto syntax; | |
9180 | } | |
9181 | ||
9182 | return MATCH_YES; | |
9183 | ||
9184 | syntax: | |
9185 | gfc_error ("Syntax error in SAVE statement at %C"); | |
9186 | return MATCH_ERROR; | |
9187 | } | |
9188 | ||
9189 | ||
8f6339b6 | 9190 | match |
9191 | gfc_match_value (void) | |
9192 | { | |
9193 | gfc_symbol *sym; | |
9194 | match m; | |
9195 | ||
6a7084d7 | 9196 | /* This is not allowed within a BLOCK construct! */ |
9197 | if (gfc_current_state () == COMP_BLOCK) | |
9198 | { | |
9199 | gfc_error ("VALUE is not allowed inside of BLOCK at %C"); | |
9200 | return MATCH_ERROR; | |
9201 | } | |
9202 | ||
60e19868 | 9203 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE statement at %C")) |
8f6339b6 | 9204 | return MATCH_ERROR; |
9205 | ||
9206 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9207 | { | |
9208 | return MATCH_ERROR; | |
9209 | } | |
9210 | ||
9211 | if (gfc_match_eos () == MATCH_YES) | |
9212 | goto syntax; | |
9213 | ||
9214 | for(;;) | |
9215 | { | |
9216 | m = gfc_match_symbol (&sym, 0); | |
9217 | switch (m) | |
9218 | { | |
9219 | case MATCH_YES: | |
60e19868 | 9220 | if (!gfc_add_value (&sym->attr, sym->name, &gfc_current_locus)) |
8f6339b6 | 9221 | return MATCH_ERROR; |
9222 | goto next_item; | |
9223 | ||
9224 | case MATCH_NO: | |
9225 | break; | |
9226 | ||
9227 | case MATCH_ERROR: | |
9228 | return MATCH_ERROR; | |
9229 | } | |
9230 | ||
9231 | next_item: | |
9232 | if (gfc_match_eos () == MATCH_YES) | |
9233 | break; | |
9234 | if (gfc_match_char (',') != MATCH_YES) | |
9235 | goto syntax; | |
9236 | } | |
9237 | ||
9238 | return MATCH_YES; | |
9239 | ||
9240 | syntax: | |
9241 | gfc_error ("Syntax error in VALUE statement at %C"); | |
9242 | return MATCH_ERROR; | |
9243 | } | |
9244 | ||
f6d0e37a | 9245 | |
ef814c81 | 9246 | match |
9247 | gfc_match_volatile (void) | |
9248 | { | |
9249 | gfc_symbol *sym; | |
2c6ca8fc | 9250 | char *name; |
ef814c81 | 9251 | match m; |
9252 | ||
60e19868 | 9253 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE statement at %C")) |
ef814c81 | 9254 | return MATCH_ERROR; |
9255 | ||
9256 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9257 | { | |
9258 | return MATCH_ERROR; | |
9259 | } | |
9260 | ||
9261 | if (gfc_match_eos () == MATCH_YES) | |
9262 | goto syntax; | |
9263 | ||
9264 | for(;;) | |
9265 | { | |
8db94b3b | 9266 | /* VOLATILE is special because it can be added to host-associated |
293d72e0 | 9267 | symbols locally. Except for coarrays. */ |
2f241857 | 9268 | m = gfc_match_symbol (&sym, 1); |
ef814c81 | 9269 | switch (m) |
9270 | { | |
9271 | case MATCH_YES: | |
2c6ca8fc | 9272 | name = XCNEWVAR (char, strlen (sym->name) + 1); |
9273 | strcpy (name, sym->name); | |
9274 | if (!check_function_name (name)) | |
9275 | return MATCH_ERROR; | |
aff518b0 | 9276 | /* F2008, C560+C561. VOLATILE for host-/use-associated variable or |
9277 | for variable in a BLOCK which is defined outside of the BLOCK. */ | |
9278 | if (sym->ns != gfc_current_ns && sym->attr.codimension) | |
9279 | { | |
716da296 | 9280 | gfc_error ("Specifying VOLATILE for coarray variable %qs at " |
aff518b0 | 9281 | "%C, which is use-/host-associated", sym->name); |
9282 | return MATCH_ERROR; | |
9283 | } | |
60e19868 | 9284 | if (!gfc_add_volatile (&sym->attr, sym->name, &gfc_current_locus)) |
ef814c81 | 9285 | return MATCH_ERROR; |
9286 | goto next_item; | |
9287 | ||
9288 | case MATCH_NO: | |
9289 | break; | |
9290 | ||
9291 | case MATCH_ERROR: | |
9292 | return MATCH_ERROR; | |
9293 | } | |
9294 | ||
9295 | next_item: | |
9296 | if (gfc_match_eos () == MATCH_YES) | |
9297 | break; | |
9298 | if (gfc_match_char (',') != MATCH_YES) | |
9299 | goto syntax; | |
9300 | } | |
9301 | ||
9302 | return MATCH_YES; | |
9303 | ||
9304 | syntax: | |
9305 | gfc_error ("Syntax error in VOLATILE statement at %C"); | |
9306 | return MATCH_ERROR; | |
9307 | } | |
9308 | ||
9309 | ||
738928be | 9310 | match |
9311 | gfc_match_asynchronous (void) | |
9312 | { | |
9313 | gfc_symbol *sym; | |
2c6ca8fc | 9314 | char *name; |
738928be | 9315 | match m; |
9316 | ||
60e19868 | 9317 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS statement at %C")) |
738928be | 9318 | return MATCH_ERROR; |
9319 | ||
9320 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9321 | { | |
9322 | return MATCH_ERROR; | |
9323 | } | |
9324 | ||
9325 | if (gfc_match_eos () == MATCH_YES) | |
9326 | goto syntax; | |
9327 | ||
9328 | for(;;) | |
9329 | { | |
8db94b3b | 9330 | /* ASYNCHRONOUS is special because it can be added to host-associated |
738928be | 9331 | symbols locally. */ |
9332 | m = gfc_match_symbol (&sym, 1); | |
9333 | switch (m) | |
9334 | { | |
9335 | case MATCH_YES: | |
2c6ca8fc | 9336 | name = XCNEWVAR (char, strlen (sym->name) + 1); |
9337 | strcpy (name, sym->name); | |
9338 | if (!check_function_name (name)) | |
9339 | return MATCH_ERROR; | |
60e19868 | 9340 | if (!gfc_add_asynchronous (&sym->attr, sym->name, &gfc_current_locus)) |
738928be | 9341 | return MATCH_ERROR; |
9342 | goto next_item; | |
9343 | ||
9344 | case MATCH_NO: | |
9345 | break; | |
9346 | ||
9347 | case MATCH_ERROR: | |
9348 | return MATCH_ERROR; | |
9349 | } | |
9350 | ||
9351 | next_item: | |
9352 | if (gfc_match_eos () == MATCH_YES) | |
9353 | break; | |
9354 | if (gfc_match_char (',') != MATCH_YES) | |
9355 | goto syntax; | |
9356 | } | |
9357 | ||
9358 | return MATCH_YES; | |
9359 | ||
9360 | syntax: | |
9361 | gfc_error ("Syntax error in ASYNCHRONOUS statement at %C"); | |
9362 | return MATCH_ERROR; | |
9363 | } | |
9364 | ||
9365 | ||
4b8eb6ca | 9366 | /* Match a module procedure statement in a submodule. */ |
9367 | ||
9368 | match | |
9369 | gfc_match_submod_proc (void) | |
9370 | { | |
9371 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9372 | gfc_symbol *sym, *fsym; | |
9373 | match m; | |
9374 | gfc_formal_arglist *formal, *head, *tail; | |
9375 | ||
9376 | if (gfc_current_state () != COMP_CONTAINS | |
9377 | || !(gfc_state_stack->previous | |
76e207a9 | 9378 | && (gfc_state_stack->previous->state == COMP_SUBMODULE |
9379 | || gfc_state_stack->previous->state == COMP_MODULE))) | |
4b8eb6ca | 9380 | return MATCH_NO; |
9381 | ||
9382 | m = gfc_match (" module% procedure% %n", name); | |
9383 | if (m != MATCH_YES) | |
9384 | return m; | |
9385 | ||
9386 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE PROCEDURE declaration " | |
9387 | "at %C")) | |
9388 | return MATCH_ERROR; | |
9389 | ||
9390 | if (get_proc_name (name, &sym, false)) | |
9391 | return MATCH_ERROR; | |
9392 | ||
9393 | /* Make sure that the result field is appropriately filled, even though | |
9394 | the result symbol will be replaced later on. */ | |
dee7f6d1 | 9395 | if (sym->tlink && sym->tlink->attr.function) |
4b8eb6ca | 9396 | { |
dee7f6d1 | 9397 | if (sym->tlink->result |
9398 | && sym->tlink->result != sym->tlink) | |
9399 | sym->result= sym->tlink->result; | |
4b8eb6ca | 9400 | else |
9401 | sym->result = sym; | |
9402 | } | |
9403 | ||
9404 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if | |
9405 | the symbol existed before. */ | |
9406 | sym->declared_at = gfc_current_locus; | |
9407 | ||
9408 | if (!sym->attr.module_procedure) | |
9409 | return MATCH_ERROR; | |
9410 | ||
9411 | /* Signal match_end to expect "end procedure". */ | |
9412 | sym->abr_modproc_decl = 1; | |
9413 | ||
9414 | /* Change from IFSRC_IFBODY coming from the interface declaration. */ | |
9415 | sym->attr.if_source = IFSRC_DECL; | |
9416 | ||
9417 | gfc_new_block = sym; | |
9418 | ||
9419 | /* Make a new formal arglist with the symbols in the procedure | |
9420 | namespace. */ | |
9421 | head = tail = NULL; | |
9422 | for (formal = sym->formal; formal && formal->sym; formal = formal->next) | |
9423 | { | |
9424 | if (formal == sym->formal) | |
9425 | head = tail = gfc_get_formal_arglist (); | |
9426 | else | |
9427 | { | |
9428 | tail->next = gfc_get_formal_arglist (); | |
9429 | tail = tail->next; | |
9430 | } | |
9431 | ||
9432 | if (gfc_copy_dummy_sym (&fsym, formal->sym, 0)) | |
9433 | goto cleanup; | |
9434 | ||
9435 | tail->sym = fsym; | |
9436 | gfc_set_sym_referenced (fsym); | |
9437 | } | |
9438 | ||
9439 | /* The dummy symbols get cleaned up, when the formal_namespace of the | |
9440 | interface declaration is cleared. This allows us to add the | |
9441 | explicit interface as is done for other type of procedure. */ | |
9442 | if (!gfc_add_explicit_interface (sym, IFSRC_DECL, head, | |
9443 | &gfc_current_locus)) | |
9444 | return MATCH_ERROR; | |
9445 | ||
9446 | if (gfc_match_eos () != MATCH_YES) | |
9447 | { | |
9448 | gfc_syntax_error (ST_MODULE_PROC); | |
9449 | return MATCH_ERROR; | |
9450 | } | |
9451 | ||
9452 | return MATCH_YES; | |
9453 | ||
9454 | cleanup: | |
9455 | gfc_free_formal_arglist (head); | |
9456 | return MATCH_ERROR; | |
9457 | } | |
9458 | ||
9459 | ||
4ee9c684 | 9460 | /* Match a module procedure statement. Note that we have to modify |
9461 | symbols in the parent's namespace because the current one was there | |
89d91d02 | 9462 | to receive symbols that are in an interface's formal argument list. */ |
4ee9c684 | 9463 | |
9464 | match | |
9465 | gfc_match_modproc (void) | |
9466 | { | |
9467 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9468 | gfc_symbol *sym; | |
9469 | match m; | |
d920fb76 | 9470 | locus old_locus; |
63d42079 | 9471 | gfc_namespace *module_ns; |
94ce9f74 | 9472 | gfc_interface *old_interface_head, *interface; |
4ee9c684 | 9473 | |
9474 | if (gfc_state_stack->state != COMP_INTERFACE | |
9475 | || gfc_state_stack->previous == NULL | |
5cf92482 | 9476 | || current_interface.type == INTERFACE_NAMELESS |
9477 | || current_interface.type == INTERFACE_ABSTRACT) | |
4ee9c684 | 9478 | { |
1a9745d2 | 9479 | gfc_error ("MODULE PROCEDURE at %C must be in a generic module " |
9480 | "interface"); | |
4ee9c684 | 9481 | return MATCH_ERROR; |
9482 | } | |
9483 | ||
63d42079 | 9484 | module_ns = gfc_current_ns->parent; |
9485 | for (; module_ns; module_ns = module_ns->parent) | |
15ca3865 | 9486 | if (module_ns->proc_name->attr.flavor == FL_MODULE |
9487 | || module_ns->proc_name->attr.flavor == FL_PROGRAM | |
9488 | || (module_ns->proc_name->attr.flavor == FL_PROCEDURE | |
9489 | && !module_ns->proc_name->attr.contained)) | |
63d42079 | 9490 | break; |
9491 | ||
9492 | if (module_ns == NULL) | |
9493 | return MATCH_ERROR; | |
9494 | ||
94ce9f74 | 9495 | /* Store the current state of the interface. We will need it if we |
9496 | end up with a syntax error and need to recover. */ | |
9497 | old_interface_head = gfc_current_interface_head (); | |
9498 | ||
d920fb76 | 9499 | /* Check if the F2008 optional double colon appears. */ |
9500 | gfc_gobble_whitespace (); | |
9501 | old_locus = gfc_current_locus; | |
9502 | if (gfc_match ("::") == MATCH_YES) | |
9503 | { | |
60e19868 | 9504 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
9505 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
d920fb76 | 9506 | return MATCH_ERROR; |
9507 | } | |
9508 | else | |
9509 | gfc_current_locus = old_locus; | |
8db94b3b | 9510 | |
4ee9c684 | 9511 | for (;;) |
9512 | { | |
94ce9f74 | 9513 | bool last = false; |
d920fb76 | 9514 | old_locus = gfc_current_locus; |
94ce9f74 | 9515 | |
4ee9c684 | 9516 | m = gfc_match_name (name); |
9517 | if (m == MATCH_NO) | |
9518 | goto syntax; | |
9519 | if (m != MATCH_YES) | |
9520 | return MATCH_ERROR; | |
9521 | ||
94ce9f74 | 9522 | /* Check for syntax error before starting to add symbols to the |
9523 | current namespace. */ | |
9524 | if (gfc_match_eos () == MATCH_YES) | |
9525 | last = true; | |
d920fb76 | 9526 | |
94ce9f74 | 9527 | if (!last && gfc_match_char (',') != MATCH_YES) |
9528 | goto syntax; | |
9529 | ||
9530 | /* Now we're sure the syntax is valid, we process this item | |
9531 | further. */ | |
63d42079 | 9532 | if (gfc_get_symbol (name, module_ns, &sym)) |
4ee9c684 | 9533 | return MATCH_ERROR; |
9534 | ||
15ca3865 | 9535 | if (sym->attr.intrinsic) |
9536 | { | |
9537 | gfc_error ("Intrinsic procedure at %L cannot be a MODULE " | |
9538 | "PROCEDURE", &old_locus); | |
9539 | return MATCH_ERROR; | |
9540 | } | |
9541 | ||
4ee9c684 | 9542 | if (sym->attr.proc != PROC_MODULE |
60e19868 | 9543 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
4ee9c684 | 9544 | return MATCH_ERROR; |
9545 | ||
60e19868 | 9546 | if (!gfc_add_interface (sym)) |
4ee9c684 | 9547 | return MATCH_ERROR; |
9548 | ||
3186f695 | 9549 | sym->attr.mod_proc = 1; |
15ca3865 | 9550 | sym->declared_at = old_locus; |
3186f695 | 9551 | |
94ce9f74 | 9552 | if (last) |
4ee9c684 | 9553 | break; |
4ee9c684 | 9554 | } |
9555 | ||
9556 | return MATCH_YES; | |
9557 | ||
9558 | syntax: | |
94ce9f74 | 9559 | /* Restore the previous state of the interface. */ |
9560 | interface = gfc_current_interface_head (); | |
9561 | gfc_set_current_interface_head (old_interface_head); | |
9562 | ||
9563 | /* Free the new interfaces. */ | |
9564 | while (interface != old_interface_head) | |
9565 | { | |
9566 | gfc_interface *i = interface->next; | |
434f0922 | 9567 | free (interface); |
94ce9f74 | 9568 | interface = i; |
9569 | } | |
9570 | ||
9571 | /* And issue a syntax error. */ | |
4ee9c684 | 9572 | gfc_syntax_error (ST_MODULE_PROC); |
9573 | return MATCH_ERROR; | |
9574 | } | |
9575 | ||
9576 | ||
ea94d76d | 9577 | /* Check a derived type that is being extended. */ |
7a99bc9b | 9578 | |
ea94d76d | 9579 | static gfc_symbol* |
9580 | check_extended_derived_type (char *name) | |
9581 | { | |
9582 | gfc_symbol *extended; | |
9583 | ||
9584 | if (gfc_find_symbol (name, gfc_current_ns, 1, &extended)) | |
9585 | { | |
9586 | gfc_error ("Ambiguous symbol in TYPE definition at %C"); | |
9587 | return NULL; | |
9588 | } | |
9589 | ||
7a99bc9b | 9590 | extended = gfc_find_dt_in_generic (extended); |
9591 | ||
9592 | /* F08:C428. */ | |
ea94d76d | 9593 | if (!extended) |
9594 | { | |
716da296 | 9595 | gfc_error ("Symbol %qs at %C has not been previously defined", name); |
ea94d76d | 9596 | return NULL; |
9597 | } | |
9598 | ||
9599 | if (extended->attr.flavor != FL_DERIVED) | |
9600 | { | |
716da296 | 9601 | gfc_error ("%qs in EXTENDS expression at %C is not a " |
ea94d76d | 9602 | "derived type", name); |
9603 | return NULL; | |
9604 | } | |
9605 | ||
9606 | if (extended->attr.is_bind_c) | |
9607 | { | |
716da296 | 9608 | gfc_error ("%qs cannot be extended at %C because it " |
ea94d76d | 9609 | "is BIND(C)", extended->name); |
9610 | return NULL; | |
9611 | } | |
9612 | ||
9613 | if (extended->attr.sequence) | |
9614 | { | |
716da296 | 9615 | gfc_error ("%qs cannot be extended at %C because it " |
ea94d76d | 9616 | "is a SEQUENCE type", extended->name); |
9617 | return NULL; | |
9618 | } | |
9619 | ||
9620 | return extended; | |
9621 | } | |
9622 | ||
9623 | ||
c5d33754 | 9624 | /* Match the optional attribute specifiers for a type declaration. |
9625 | Return MATCH_ERROR if an error is encountered in one of the handled | |
9626 | attributes (public, private, bind(c)), MATCH_NO if what's found is | |
9627 | not a handled attribute, and MATCH_YES otherwise. TODO: More error | |
9628 | checking on attribute conflicts needs to be done. */ | |
4ee9c684 | 9629 | |
9630 | match | |
ea94d76d | 9631 | gfc_get_type_attr_spec (symbol_attribute *attr, char *name) |
4ee9c684 | 9632 | { |
c5d33754 | 9633 | /* See if the derived type is marked as private. */ |
4ee9c684 | 9634 | if (gfc_match (" , private") == MATCH_YES) |
9635 | { | |
e14bee04 | 9636 | if (gfc_current_state () != COMP_MODULE) |
4ee9c684 | 9637 | { |
e14bee04 | 9638 | gfc_error ("Derived type at %C can only be PRIVATE in the " |
9639 | "specification part of a module"); | |
4ee9c684 | 9640 | return MATCH_ERROR; |
9641 | } | |
9642 | ||
60e19868 | 9643 | if (!gfc_add_access (attr, ACCESS_PRIVATE, NULL, NULL)) |
4ee9c684 | 9644 | return MATCH_ERROR; |
4ee9c684 | 9645 | } |
c5d33754 | 9646 | else if (gfc_match (" , public") == MATCH_YES) |
4ee9c684 | 9647 | { |
e14bee04 | 9648 | if (gfc_current_state () != COMP_MODULE) |
4ee9c684 | 9649 | { |
e14bee04 | 9650 | gfc_error ("Derived type at %C can only be PUBLIC in the " |
9651 | "specification part of a module"); | |
4ee9c684 | 9652 | return MATCH_ERROR; |
9653 | } | |
9654 | ||
60e19868 | 9655 | if (!gfc_add_access (attr, ACCESS_PUBLIC, NULL, NULL)) |
4ee9c684 | 9656 | return MATCH_ERROR; |
4ee9c684 | 9657 | } |
ac5f2650 | 9658 | else if (gfc_match (" , bind ( c )") == MATCH_YES) |
c5d33754 | 9659 | { |
9660 | /* If the type is defined to be bind(c) it then needs to make | |
9661 | sure that all fields are interoperable. This will | |
9662 | need to be a semantic check on the finished derived type. | |
9663 | See 15.2.3 (lines 9-12) of F2003 draft. */ | |
60e19868 | 9664 | if (!gfc_add_is_bind_c (attr, NULL, &gfc_current_locus, 0)) |
c5d33754 | 9665 | return MATCH_ERROR; |
9666 | ||
9667 | /* TODO: attr conflicts need to be checked, probably in symbol.c. */ | |
9668 | } | |
ac5f2650 | 9669 | else if (gfc_match (" , abstract") == MATCH_YES) |
9670 | { | |
60e19868 | 9671 | if (!gfc_notify_std (GFC_STD_F2003, "ABSTRACT type at %C")) |
ac5f2650 | 9672 | return MATCH_ERROR; |
9673 | ||
60e19868 | 9674 | if (!gfc_add_abstract (attr, &gfc_current_locus)) |
ac5f2650 | 9675 | return MATCH_ERROR; |
9676 | } | |
60e19868 | 9677 | else if (name && gfc_match (" , extends ( %n )", name) == MATCH_YES) |
ea94d76d | 9678 | { |
60e19868 | 9679 | if (!gfc_add_extension (attr, &gfc_current_locus)) |
ea94d76d | 9680 | return MATCH_ERROR; |
9681 | } | |
c5d33754 | 9682 | else |
9683 | return MATCH_NO; | |
9684 | ||
9685 | /* If we get here, something matched. */ | |
9686 | return MATCH_YES; | |
9687 | } | |
9688 | ||
9689 | ||
d7cd448a | 9690 | /* Common function for type declaration blocks similar to derived types, such |
9691 | as STRUCTURES and MAPs. Unlike derived types, a structure type | |
9692 | does NOT have a generic symbol matching the name given by the user. | |
9693 | STRUCTUREs can share names with variables and PARAMETERs so we must allow | |
9694 | for the creation of an independent symbol. | |
7d7125df | 9695 | Other parameters are a message to prefix errors with, the name of the new |
d7cd448a | 9696 | type to be created, and the flavor to add to the resulting symbol. */ |
9697 | ||
9698 | static bool | |
9699 | get_struct_decl (const char *name, sym_flavor fl, locus *decl, | |
9700 | gfc_symbol **result) | |
9701 | { | |
9702 | gfc_symbol *sym; | |
9703 | locus where; | |
9704 | ||
9705 | gcc_assert (name[0] == (char) TOUPPER (name[0])); | |
9706 | ||
9707 | if (decl) | |
9708 | where = *decl; | |
9709 | else | |
9710 | where = gfc_current_locus; | |
9711 | ||
9712 | if (gfc_get_symbol (name, NULL, &sym)) | |
9713 | return false; | |
9714 | ||
9715 | if (!sym) | |
9716 | { | |
9717 | gfc_internal_error ("Failed to create structure type '%s' at %C", name); | |
9718 | return false; | |
9719 | } | |
9720 | ||
9721 | if (sym->components != NULL || sym->attr.zero_comp) | |
9722 | { | |
1b7008c4 | 9723 | gfc_error ("Type definition of %qs at %C was already defined at %L", |
d7cd448a | 9724 | sym->name, &sym->declared_at); |
9725 | return false; | |
9726 | } | |
9727 | ||
9728 | sym->declared_at = where; | |
9729 | ||
9730 | if (sym->attr.flavor != fl | |
9731 | && !gfc_add_flavor (&sym->attr, fl, sym->name, NULL)) | |
9732 | return false; | |
9733 | ||
9734 | if (!sym->hash_value) | |
9735 | /* Set the hash for the compound name for this type. */ | |
9736 | sym->hash_value = gfc_hash_value (sym); | |
9737 | ||
9738 | /* Normally the type is expected to have been completely parsed by the time | |
9739 | a field declaration with this type is seen. For unions, maps, and nested | |
9740 | structure declarations, we need to indicate that it is okay that we | |
9741 | haven't seen any components yet. This will be updated after the structure | |
9742 | is fully parsed. */ | |
9743 | sym->attr.zero_comp = 0; | |
9744 | ||
9745 | /* Structures always act like derived-types with the SEQUENCE attribute */ | |
9746 | gfc_add_sequence (&sym->attr, sym->name, NULL); | |
9747 | ||
9748 | if (result) *result = sym; | |
9749 | ||
9750 | return true; | |
9751 | } | |
9752 | ||
9753 | ||
9754 | /* Match the opening of a MAP block. Like a struct within a union in C; | |
9755 | behaves identical to STRUCTURE blocks. */ | |
9756 | ||
9757 | match | |
9758 | gfc_match_map (void) | |
9759 | { | |
ac1739da | 9760 | /* Counter used to give unique internal names to map structures. */ |
9761 | static unsigned int gfc_map_id = 0; | |
9762 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9763 | gfc_symbol *sym; | |
9764 | locus old_loc; | |
d7cd448a | 9765 | |
ac1739da | 9766 | old_loc = gfc_current_locus; |
d7cd448a | 9767 | |
ac1739da | 9768 | if (gfc_match_eos () != MATCH_YES) |
9769 | { | |
9770 | gfc_error ("Junk after MAP statement at %C"); | |
9771 | gfc_current_locus = old_loc; | |
9772 | return MATCH_ERROR; | |
9773 | } | |
d7cd448a | 9774 | |
ac1739da | 9775 | /* Map blocks are anonymous so we make up unique names for the symbol table |
9776 | which are invalid Fortran identifiers. */ | |
9777 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "MM$%u", gfc_map_id++); | |
d7cd448a | 9778 | |
ac1739da | 9779 | if (!get_struct_decl (name, FL_STRUCT, &old_loc, &sym)) |
9780 | return MATCH_ERROR; | |
d7cd448a | 9781 | |
ac1739da | 9782 | gfc_new_block = sym; |
d7cd448a | 9783 | |
ac1739da | 9784 | return MATCH_YES; |
d7cd448a | 9785 | } |
9786 | ||
9787 | ||
9788 | /* Match the opening of a UNION block. */ | |
9789 | ||
9790 | match | |
9791 | gfc_match_union (void) | |
9792 | { | |
ac1739da | 9793 | /* Counter used to give unique internal names to union types. */ |
9794 | static unsigned int gfc_union_id = 0; | |
9795 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9796 | gfc_symbol *sym; | |
9797 | locus old_loc; | |
d7cd448a | 9798 | |
ac1739da | 9799 | old_loc = gfc_current_locus; |
d7cd448a | 9800 | |
ac1739da | 9801 | if (gfc_match_eos () != MATCH_YES) |
9802 | { | |
9803 | gfc_error ("Junk after UNION statement at %C"); | |
9804 | gfc_current_locus = old_loc; | |
9805 | return MATCH_ERROR; | |
9806 | } | |
d7cd448a | 9807 | |
ac1739da | 9808 | /* Unions are anonymous so we make up unique names for the symbol table |
9809 | which are invalid Fortran identifiers. */ | |
9810 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "UU$%u", gfc_union_id++); | |
d7cd448a | 9811 | |
ac1739da | 9812 | if (!get_struct_decl (name, FL_UNION, &old_loc, &sym)) |
9813 | return MATCH_ERROR; | |
d7cd448a | 9814 | |
ac1739da | 9815 | gfc_new_block = sym; |
d7cd448a | 9816 | |
ac1739da | 9817 | return MATCH_YES; |
d7cd448a | 9818 | } |
9819 | ||
9820 | ||
9821 | /* Match the beginning of a STRUCTURE declaration. This is similar to | |
9822 | matching the beginning of a derived type declaration with a few | |
9823 | twists. The resulting type symbol has no access control or other | |
9824 | interesting attributes. */ | |
9825 | ||
9826 | match | |
9827 | gfc_match_structure_decl (void) | |
9828 | { | |
ac1739da | 9829 | /* Counter used to give unique internal names to anonymous structures. */ |
9830 | static unsigned int gfc_structure_id = 0; | |
9831 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9832 | gfc_symbol *sym; | |
9833 | match m; | |
9834 | locus where; | |
d7cd448a | 9835 | |
ac1739da | 9836 | if (!flag_dec_structure) |
9837 | { | |
841da9cf | 9838 | gfc_error ("%s at %C is a DEC extension, enable with " |
9839 | "%<-fdec-structure%>", | |
9840 | "STRUCTURE"); | |
ac1739da | 9841 | return MATCH_ERROR; |
9842 | } | |
d7cd448a | 9843 | |
ac1739da | 9844 | name[0] = '\0'; |
d7cd448a | 9845 | |
ac1739da | 9846 | m = gfc_match (" /%n/", name); |
9847 | if (m != MATCH_YES) | |
9848 | { | |
9849 | /* Non-nested structure declarations require a structure name. */ | |
9850 | if (!gfc_comp_struct (gfc_current_state ())) | |
9851 | { | |
9852 | gfc_error ("Structure name expected in non-nested structure " | |
9853 | "declaration at %C"); | |
9854 | return MATCH_ERROR; | |
9855 | } | |
9856 | /* This is an anonymous structure; make up a unique name for it | |
9857 | (upper-case letters never make it to symbol names from the source). | |
9858 | The important thing is initializing the type variable | |
9859 | and setting gfc_new_symbol, which is immediately used by | |
9860 | parse_structure () and variable_decl () to add components of | |
9861 | this type. */ | |
9862 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "SS$%u", gfc_structure_id++); | |
9863 | } | |
d7cd448a | 9864 | |
ac1739da | 9865 | where = gfc_current_locus; |
9866 | /* No field list allowed after non-nested structure declaration. */ | |
9867 | if (!gfc_comp_struct (gfc_current_state ()) | |
9868 | && gfc_match_eos () != MATCH_YES) | |
9869 | { | |
9870 | gfc_error ("Junk after non-nested STRUCTURE statement at %C"); | |
9871 | return MATCH_ERROR; | |
9872 | } | |
d7cd448a | 9873 | |
ac1739da | 9874 | /* Make sure the name is not the name of an intrinsic type. */ |
9875 | if (gfc_is_intrinsic_typename (name)) | |
9876 | { | |
1b7008c4 | 9877 | gfc_error ("Structure name %qs at %C cannot be the same as an" |
ac1739da | 9878 | " intrinsic type", name); |
9879 | return MATCH_ERROR; | |
9880 | } | |
d7cd448a | 9881 | |
ac1739da | 9882 | /* Store the actual type symbol for the structure with an upper-case first |
9883 | letter (an invalid Fortran identifier). */ | |
d7cd448a | 9884 | |
dc326dc0 | 9885 | if (!get_struct_decl (gfc_dt_upper_string (name), FL_STRUCT, &where, &sym)) |
ac1739da | 9886 | return MATCH_ERROR; |
d7cd448a | 9887 | |
ac1739da | 9888 | gfc_new_block = sym; |
9889 | return MATCH_YES; | |
d7cd448a | 9890 | } |
9891 | ||
006943e8 | 9892 | |
9893 | /* This function does some work to determine which matcher should be used to | |
80ed743c | 9894 | * match a statement beginning with "TYPE". This is used to disambiguate TYPE |
006943e8 | 9895 | * as an alias for PRINT from derived type declarations, TYPE IS statements, |
80ed743c | 9896 | * and [parameterized] derived type declarations. */ |
006943e8 | 9897 | |
9898 | match | |
9899 | gfc_match_type (gfc_statement *st) | |
9900 | { | |
9901 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9902 | match m; | |
9903 | locus old_loc; | |
9904 | ||
9905 | /* Requires -fdec. */ | |
9906 | if (!flag_dec) | |
9907 | return MATCH_NO; | |
9908 | ||
9909 | m = gfc_match ("type"); | |
9910 | if (m != MATCH_YES) | |
9911 | return m; | |
9912 | /* If we already have an error in the buffer, it is probably from failing to | |
9913 | * match a derived type data declaration. Let it happen. */ | |
9914 | else if (gfc_error_flag_test ()) | |
9915 | return MATCH_NO; | |
9916 | ||
9917 | old_loc = gfc_current_locus; | |
9918 | *st = ST_NONE; | |
9919 | ||
9920 | /* If we see an attribute list before anything else it's definitely a derived | |
9921 | * type declaration. */ | |
9922 | if (gfc_match (" ,") == MATCH_YES || gfc_match (" ::") == MATCH_YES) | |
80ed743c | 9923 | goto derived; |
006943e8 | 9924 | |
9925 | /* By now "TYPE" has already been matched. If we do not see a name, this may | |
9926 | * be something like "TYPE *" or "TYPE <fmt>". */ | |
9927 | m = gfc_match_name (name); | |
9928 | if (m != MATCH_YES) | |
9929 | { | |
9930 | /* Let print match if it can, otherwise throw an error from | |
9931 | * gfc_match_derived_decl. */ | |
9932 | gfc_current_locus = old_loc; | |
9933 | if (gfc_match_print () == MATCH_YES) | |
9934 | { | |
9935 | *st = ST_WRITE; | |
9936 | return MATCH_YES; | |
9937 | } | |
80ed743c | 9938 | goto derived; |
006943e8 | 9939 | } |
9940 | ||
80ed743c | 9941 | /* Check for EOS. */ |
9942 | if (gfc_match_eos () == MATCH_YES) | |
006943e8 | 9943 | { |
9944 | /* By now we have "TYPE <name> <EOS>". Check first if the name is an | |
9945 | * intrinsic typename - if so let gfc_match_derived_decl dump an error. | |
9946 | * Otherwise if gfc_match_derived_decl fails it's probably an existing | |
9947 | * symbol which can be printed. */ | |
9948 | gfc_current_locus = old_loc; | |
9949 | m = gfc_match_derived_decl (); | |
9950 | if (gfc_is_intrinsic_typename (name) || m == MATCH_YES) | |
9951 | { | |
9952 | *st = ST_DERIVED_DECL; | |
9953 | return m; | |
9954 | } | |
006943e8 | 9955 | } |
80ed743c | 9956 | else |
9957 | { | |
9958 | /* Here we have "TYPE <name>". Check for <TYPE IS (> or a PDT declaration | |
9959 | like <type name(parameter)>. */ | |
9960 | gfc_gobble_whitespace (); | |
9961 | bool paren = gfc_peek_ascii_char () == '('; | |
9962 | if (paren) | |
9963 | { | |
9964 | if (strcmp ("is", name) == 0) | |
9965 | goto typeis; | |
9966 | else | |
9967 | goto derived; | |
9968 | } | |
9969 | } | |
9970 | ||
9971 | /* Treat TYPE... like PRINT... */ | |
9972 | gfc_current_locus = old_loc; | |
9973 | *st = ST_WRITE; | |
9974 | return gfc_match_print (); | |
006943e8 | 9975 | |
80ed743c | 9976 | derived: |
9977 | gfc_current_locus = old_loc; | |
9978 | *st = ST_DERIVED_DECL; | |
9979 | return gfc_match_derived_decl (); | |
9980 | ||
9981 | typeis: | |
9982 | gfc_current_locus = old_loc; | |
9983 | *st = ST_TYPE_IS; | |
9984 | return gfc_match_type_is (); | |
006943e8 | 9985 | } |
9986 | ||
9987 | ||
c5d33754 | 9988 | /* Match the beginning of a derived type declaration. If a type name |
9989 | was the result of a function, then it is possible to have a symbol | |
9990 | already to be known as a derived type yet have no components. */ | |
9991 | ||
9992 | match | |
9993 | gfc_match_derived_decl (void) | |
9994 | { | |
9995 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
ea94d76d | 9996 | char parent[GFC_MAX_SYMBOL_LEN + 1]; |
c5d33754 | 9997 | symbol_attribute attr; |
c2958b6b | 9998 | gfc_symbol *sym, *gensym; |
ea94d76d | 9999 | gfc_symbol *extended; |
c5d33754 | 10000 | match m; |
10001 | match is_type_attr_spec = MATCH_NO; | |
33e86520 | 10002 | bool seen_attr = false; |
c2958b6b | 10003 | gfc_interface *intr = NULL, *head; |
9d958d5b | 10004 | bool parameterized_type = false; |
10005 | bool seen_colons = false; | |
c5d33754 | 10006 | |
d7cd448a | 10007 | if (gfc_comp_struct (gfc_current_state ())) |
c5d33754 | 10008 | return MATCH_NO; |
10009 | ||
ea94d76d | 10010 | name[0] = '\0'; |
10011 | parent[0] = '\0'; | |
c5d33754 | 10012 | gfc_clear_attr (&attr); |
ea94d76d | 10013 | extended = NULL; |
c5d33754 | 10014 | |
10015 | do | |
10016 | { | |
ea94d76d | 10017 | is_type_attr_spec = gfc_get_type_attr_spec (&attr, parent); |
c5d33754 | 10018 | if (is_type_attr_spec == MATCH_ERROR) |
10019 | return MATCH_ERROR; | |
33e86520 | 10020 | if (is_type_attr_spec == MATCH_YES) |
10021 | seen_attr = true; | |
c5d33754 | 10022 | } while (is_type_attr_spec == MATCH_YES); |
4ee9c684 | 10023 | |
e485ad6b | 10024 | /* Deal with derived type extensions. The extension attribute has |
10025 | been added to 'attr' but now the parent type must be found and | |
10026 | checked. */ | |
ea94d76d | 10027 | if (parent[0]) |
10028 | extended = check_extended_derived_type (parent); | |
10029 | ||
10030 | if (parent[0] && !extended) | |
10031 | return MATCH_ERROR; | |
10032 | ||
9d958d5b | 10033 | m = gfc_match (" ::"); |
10034 | if (m == MATCH_YES) | |
10035 | { | |
10036 | seen_colons = true; | |
10037 | } | |
10038 | else if (seen_attr) | |
4ee9c684 | 10039 | { |
10040 | gfc_error ("Expected :: in TYPE definition at %C"); | |
10041 | return MATCH_ERROR; | |
10042 | } | |
10043 | ||
9d958d5b | 10044 | m = gfc_match (" %n ", name); |
4ee9c684 | 10045 | if (m != MATCH_YES) |
10046 | return m; | |
10047 | ||
9d958d5b | 10048 | /* Make sure that we don't identify TYPE IS (...) as a parameterized |
10049 | derived type named 'is'. | |
10050 | TODO Expand the check, when 'name' = "is" by matching " (tname) " | |
10051 | and checking if this is a(n intrinsic) typename. his picks up | |
10052 | misplaced TYPE IS statements such as in select_type_1.f03. */ | |
10053 | if (gfc_peek_ascii_char () == '(') | |
10054 | { | |
10055 | if (gfc_current_state () == COMP_SELECT_TYPE | |
10056 | || (!seen_colons && !strcmp (name, "is"))) | |
10057 | return MATCH_NO; | |
10058 | parameterized_type = true; | |
10059 | } | |
10060 | ||
10061 | m = gfc_match_eos (); | |
10062 | if (m != MATCH_YES && !parameterized_type) | |
10063 | return m; | |
10064 | ||
a3055431 | 10065 | /* Make sure the name is not the name of an intrinsic type. */ |
10066 | if (gfc_is_intrinsic_typename (name)) | |
4ee9c684 | 10067 | { |
716da296 | 10068 | gfc_error ("Type name %qs at %C cannot be the same as an intrinsic " |
1a9745d2 | 10069 | "type", name); |
4ee9c684 | 10070 | return MATCH_ERROR; |
10071 | } | |
10072 | ||
c2958b6b | 10073 | if (gfc_get_symbol (name, NULL, &gensym)) |
4ee9c684 | 10074 | return MATCH_ERROR; |
10075 | ||
c2958b6b | 10076 | if (!gensym->attr.generic && gensym->ts.type != BT_UNKNOWN) |
4ee9c684 | 10077 | { |
7dea3ef8 | 10078 | if (gensym->ts.u.derived) |
10079 | gfc_error ("Derived type name %qs at %C already has a basic type " | |
10080 | "of %s", gensym->name, gfc_typename (&gensym->ts)); | |
10081 | else | |
10082 | gfc_error ("Derived type name %qs at %C already has a basic type", | |
10083 | gensym->name); | |
c2958b6b | 10084 | return MATCH_ERROR; |
10085 | } | |
10086 | ||
10087 | if (!gensym->attr.generic | |
60e19868 | 10088 | && !gfc_add_generic (&gensym->attr, gensym->name, NULL)) |
c2958b6b | 10089 | return MATCH_ERROR; |
10090 | ||
10091 | if (!gensym->attr.function | |
60e19868 | 10092 | && !gfc_add_function (&gensym->attr, gensym->name, NULL)) |
c2958b6b | 10093 | return MATCH_ERROR; |
10094 | ||
10095 | sym = gfc_find_dt_in_generic (gensym); | |
10096 | ||
10097 | if (sym && (sym->components != NULL || sym->attr.zero_comp)) | |
10098 | { | |
716da296 | 10099 | gfc_error ("Derived type definition of %qs at %C has already been " |
c2958b6b | 10100 | "defined", sym->name); |
4ee9c684 | 10101 | return MATCH_ERROR; |
10102 | } | |
10103 | ||
c2958b6b | 10104 | if (!sym) |
10105 | { | |
10106 | /* Use upper case to save the actual derived-type symbol. */ | |
d7cd448a | 10107 | gfc_get_symbol (gfc_dt_upper_string (gensym->name), NULL, &sym); |
dc326dc0 | 10108 | sym->name = gfc_get_string ("%s", gensym->name); |
c2958b6b | 10109 | head = gensym->generic; |
10110 | intr = gfc_get_interface (); | |
10111 | intr->sym = sym; | |
10112 | intr->where = gfc_current_locus; | |
10113 | intr->sym->declared_at = gfc_current_locus; | |
10114 | intr->next = head; | |
10115 | gensym->generic = intr; | |
10116 | gensym->attr.if_source = IFSRC_DECL; | |
10117 | } | |
10118 | ||
4ee9c684 | 10119 | /* The symbol may already have the derived attribute without the |
10120 | components. The ways this can happen is via a function | |
10121 | definition, an INTRINSIC statement or a subtype in another | |
10122 | derived type that is a pointer. The first part of the AND clause | |
69b1505f | 10123 | is true if the symbol is not the return value of a function. */ |
4ee9c684 | 10124 | if (sym->attr.flavor != FL_DERIVED |
60e19868 | 10125 | && !gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL)) |
4ee9c684 | 10126 | return MATCH_ERROR; |
10127 | ||
4ee9c684 | 10128 | if (attr.access != ACCESS_UNKNOWN |
60e19868 | 10129 | && !gfc_add_access (&sym->attr, attr.access, sym->name, NULL)) |
4ee9c684 | 10130 | return MATCH_ERROR; |
c2958b6b | 10131 | else if (sym->attr.access == ACCESS_UNKNOWN |
10132 | && gensym->attr.access != ACCESS_UNKNOWN | |
76e207a9 | 10133 | && !gfc_add_access (&sym->attr, gensym->attr.access, |
60e19868 | 10134 | sym->name, NULL)) |
c2958b6b | 10135 | return MATCH_ERROR; |
10136 | ||
10137 | if (sym->attr.access != ACCESS_UNKNOWN | |
10138 | && gensym->attr.access == ACCESS_UNKNOWN) | |
10139 | gensym->attr.access = sym->attr.access; | |
4ee9c684 | 10140 | |
c5d33754 | 10141 | /* See if the derived type was labeled as bind(c). */ |
10142 | if (attr.is_bind_c != 0) | |
10143 | sym->attr.is_bind_c = attr.is_bind_c; | |
10144 | ||
223f0f57 | 10145 | /* Construct the f2k_derived namespace if it is not yet there. */ |
10146 | if (!sym->f2k_derived) | |
10147 | sym->f2k_derived = gfc_get_namespace (NULL, 0); | |
8db94b3b | 10148 | |
9d958d5b | 10149 | if (parameterized_type) |
10150 | { | |
f0efd2e8 | 10151 | /* Ignore error or mismatches by going to the end of the statement |
10152 | in order to avoid the component declarations causing problems. */ | |
10153 | m = gfc_match_formal_arglist (sym, 0, 0, true); | |
10154 | if (m != MATCH_YES) | |
10155 | gfc_error_recovery (); | |
9d958d5b | 10156 | m = gfc_match_eos (); |
10157 | if (m != MATCH_YES) | |
8df28d5e | 10158 | { |
10159 | gfc_error_recovery (); | |
10160 | gfc_error_now ("Garbage after PARAMETERIZED TYPE declaration at %C"); | |
10161 | } | |
9d958d5b | 10162 | sym->attr.pdt_template = 1; |
10163 | } | |
10164 | ||
ea94d76d | 10165 | if (extended && !sym->components) |
10166 | { | |
10167 | gfc_component *p; | |
9d958d5b | 10168 | gfc_formal_arglist *f, *g, *h; |
ea94d76d | 10169 | |
10170 | /* Add the extended derived type as the first component. */ | |
10171 | gfc_add_component (sym, parent, &p); | |
ea94d76d | 10172 | extended->refs++; |
10173 | gfc_set_sym_referenced (extended); | |
10174 | ||
10175 | p->ts.type = BT_DERIVED; | |
eeebe20b | 10176 | p->ts.u.derived = extended; |
ea94d76d | 10177 | p->initializer = gfc_default_initializer (&p->ts); |
8db94b3b | 10178 | |
bdfbc762 | 10179 | /* Set extension level. */ |
10180 | if (extended->attr.extension == 255) | |
10181 | { | |
10182 | /* Since the extension field is 8 bit wide, we can only have | |
10183 | up to 255 extension levels. */ | |
716da296 | 10184 | gfc_error ("Maximum extension level reached with type %qs at %L", |
bdfbc762 | 10185 | extended->name, &extended->declared_at); |
10186 | return MATCH_ERROR; | |
10187 | } | |
10188 | sym->attr.extension = extended->attr.extension + 1; | |
ea94d76d | 10189 | |
10190 | /* Provide the links between the extended type and its extension. */ | |
10191 | if (!extended->f2k_derived) | |
10192 | extended->f2k_derived = gfc_get_namespace (NULL, 0); | |
9d958d5b | 10193 | |
10194 | /* Copy the extended type-param-name-list from the extended type, | |
10195 | append those of the extension and add the whole lot to the | |
10196 | extension. */ | |
10197 | if (extended->attr.pdt_template) | |
10198 | { | |
10199 | g = h = NULL; | |
10200 | sym->attr.pdt_template = 1; | |
10201 | for (f = extended->formal; f; f = f->next) | |
10202 | { | |
10203 | if (f == extended->formal) | |
10204 | { | |
10205 | g = gfc_get_formal_arglist (); | |
10206 | h = g; | |
10207 | } | |
10208 | else | |
10209 | { | |
10210 | g->next = gfc_get_formal_arglist (); | |
10211 | g = g->next; | |
10212 | } | |
10213 | g->sym = f->sym; | |
10214 | } | |
10215 | g->next = sym->formal; | |
10216 | sym->formal = h; | |
10217 | } | |
ea94d76d | 10218 | } |
10219 | ||
bdfbc762 | 10220 | if (!sym->hash_value) |
10221 | /* Set the hash for the compound name for this type. */ | |
a656e7c2 | 10222 | sym->hash_value = gfc_hash_value (sym); |
1de1b1a9 | 10223 | |
ac5f2650 | 10224 | /* Take over the ABSTRACT attribute. */ |
10225 | sym->attr.abstract = attr.abstract; | |
10226 | ||
4ee9c684 | 10227 | gfc_new_block = sym; |
10228 | ||
10229 | return MATCH_YES; | |
10230 | } | |
b549d2a5 | 10231 | |
10232 | ||
8db94b3b | 10233 | /* Cray Pointees can be declared as: |
452695a8 | 10234 | pointer (ipt, a (n,m,...,*)) */ |
b549d2a5 | 10235 | |
8458f4ca | 10236 | match |
b549d2a5 | 10237 | gfc_mod_pointee_as (gfc_array_spec *as) |
10238 | { | |
10239 | as->cray_pointee = true; /* This will be useful to know later. */ | |
10240 | if (as->type == AS_ASSUMED_SIZE) | |
452695a8 | 10241 | as->cp_was_assumed = true; |
b549d2a5 | 10242 | else if (as->type == AS_ASSUMED_SHAPE) |
10243 | { | |
10244 | gfc_error ("Cray Pointee at %C cannot be assumed shape array"); | |
10245 | return MATCH_ERROR; | |
10246 | } | |
10247 | return MATCH_YES; | |
10248 | } | |
3b6a4b41 | 10249 | |
10250 | ||
8db94b3b | 10251 | /* Match the enum definition statement, here we are trying to match |
10252 | the first line of enum definition statement. | |
3b6a4b41 | 10253 | Returns MATCH_YES if match is found. */ |
10254 | ||
10255 | match | |
10256 | gfc_match_enum (void) | |
10257 | { | |
10258 | match m; | |
8db94b3b | 10259 | |
3b6a4b41 | 10260 | m = gfc_match_eos (); |
10261 | if (m != MATCH_YES) | |
10262 | return m; | |
10263 | ||
60e19868 | 10264 | if (!gfc_notify_std (GFC_STD_F2003, "ENUM and ENUMERATOR at %C")) |
3b6a4b41 | 10265 | return MATCH_ERROR; |
10266 | ||
10267 | return MATCH_YES; | |
10268 | } | |
10269 | ||
10270 | ||
fe1328da | 10271 | /* Returns an initializer whose value is one higher than the value of the |
10272 | LAST_INITIALIZER argument. If the argument is NULL, the | |
10273 | initializers value will be set to zero. The initializer's kind | |
10274 | will be set to gfc_c_int_kind. | |
10275 | ||
10276 | If -fshort-enums is given, the appropriate kind will be selected | |
10277 | later after all enumerators have been parsed. A warning is issued | |
10278 | here if an initializer exceeds gfc_c_int_kind. */ | |
10279 | ||
10280 | static gfc_expr * | |
10281 | enum_initializer (gfc_expr *last_initializer, locus where) | |
10282 | { | |
10283 | gfc_expr *result; | |
126387b5 | 10284 | result = gfc_get_constant_expr (BT_INTEGER, gfc_c_int_kind, &where); |
fe1328da | 10285 | |
10286 | mpz_init (result->value.integer); | |
10287 | ||
10288 | if (last_initializer != NULL) | |
10289 | { | |
10290 | mpz_add_ui (result->value.integer, last_initializer->value.integer, 1); | |
10291 | result->where = last_initializer->where; | |
10292 | ||
10293 | if (gfc_check_integer_range (result->value.integer, | |
10294 | gfc_c_int_kind) != ARITH_OK) | |
10295 | { | |
10296 | gfc_error ("Enumerator exceeds the C integer type at %C"); | |
10297 | return NULL; | |
10298 | } | |
10299 | } | |
10300 | else | |
10301 | { | |
10302 | /* Control comes here, if it's the very first enumerator and no | |
10303 | initializer has been given. It will be initialized to zero. */ | |
10304 | mpz_set_si (result->value.integer, 0); | |
10305 | } | |
10306 | ||
10307 | return result; | |
10308 | } | |
10309 | ||
10310 | ||
60fbbf9e | 10311 | /* Match a variable name with an optional initializer. When this |
10312 | subroutine is called, a variable is expected to be parsed next. | |
10313 | Depending on what is happening at the moment, updates either the | |
10314 | symbol table or the current interface. */ | |
10315 | ||
10316 | static match | |
10317 | enumerator_decl (void) | |
10318 | { | |
10319 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10320 | gfc_expr *initializer; | |
10321 | gfc_array_spec *as = NULL; | |
10322 | gfc_symbol *sym; | |
10323 | locus var_locus; | |
10324 | match m; | |
60e19868 | 10325 | bool t; |
60fbbf9e | 10326 | locus old_locus; |
10327 | ||
10328 | initializer = NULL; | |
10329 | old_locus = gfc_current_locus; | |
10330 | ||
10331 | /* When we get here, we've just matched a list of attributes and | |
10332 | maybe a type and a double colon. The next thing we expect to see | |
10333 | is the name of the symbol. */ | |
10334 | m = gfc_match_name (name); | |
10335 | if (m != MATCH_YES) | |
10336 | goto cleanup; | |
10337 | ||
10338 | var_locus = gfc_current_locus; | |
10339 | ||
10340 | /* OK, we've successfully matched the declaration. Now put the | |
10341 | symbol in the current namespace. If we fail to create the symbol, | |
10342 | bail out. */ | |
60e19868 | 10343 | if (!build_sym (name, NULL, false, &as, &var_locus)) |
60fbbf9e | 10344 | { |
10345 | m = MATCH_ERROR; | |
10346 | goto cleanup; | |
10347 | } | |
10348 | ||
10349 | /* The double colon must be present in order to have initializers. | |
10350 | Otherwise the statement is ambiguous with an assignment statement. */ | |
10351 | if (colon_seen) | |
10352 | { | |
10353 | if (gfc_match_char ('=') == MATCH_YES) | |
10354 | { | |
10355 | m = gfc_match_init_expr (&initializer); | |
10356 | if (m == MATCH_NO) | |
10357 | { | |
10358 | gfc_error ("Expected an initialization expression at %C"); | |
10359 | m = MATCH_ERROR; | |
10360 | } | |
10361 | ||
10362 | if (m != MATCH_YES) | |
10363 | goto cleanup; | |
10364 | } | |
10365 | } | |
10366 | ||
10367 | /* If we do not have an initializer, the initialization value of the | |
10368 | previous enumerator (stored in last_initializer) is incremented | |
10369 | by 1 and is used to initialize the current enumerator. */ | |
10370 | if (initializer == NULL) | |
fe1328da | 10371 | initializer = enum_initializer (last_initializer, old_locus); |
e14bee04 | 10372 | |
60fbbf9e | 10373 | if (initializer == NULL || initializer->ts.type != BT_INTEGER) |
10374 | { | |
a8beb4f8 | 10375 | gfc_error ("ENUMERATOR %L not initialized with integer expression", |
10376 | &var_locus); | |
e14bee04 | 10377 | m = MATCH_ERROR; |
60fbbf9e | 10378 | goto cleanup; |
10379 | } | |
10380 | ||
10381 | /* Store this current initializer, for the next enumerator variable | |
10382 | to be parsed. add_init_expr_to_sym() zeros initializer, so we | |
10383 | use last_initializer below. */ | |
10384 | last_initializer = initializer; | |
10385 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
10386 | ||
10387 | /* Maintain enumerator history. */ | |
10388 | gfc_find_symbol (name, NULL, 0, &sym); | |
10389 | create_enum_history (sym, last_initializer); | |
10390 | ||
60e19868 | 10391 | return (t) ? MATCH_YES : MATCH_ERROR; |
60fbbf9e | 10392 | |
10393 | cleanup: | |
10394 | /* Free stuff up and return. */ | |
10395 | gfc_free_expr (initializer); | |
10396 | ||
10397 | return m; | |
10398 | } | |
10399 | ||
10400 | ||
f6d0e37a | 10401 | /* Match the enumerator definition statement. */ |
3b6a4b41 | 10402 | |
10403 | match | |
10404 | gfc_match_enumerator_def (void) | |
10405 | { | |
10406 | match m; | |
60e19868 | 10407 | bool t; |
e14bee04 | 10408 | |
3b6a4b41 | 10409 | gfc_clear_ts (¤t_ts); |
e14bee04 | 10410 | |
3b6a4b41 | 10411 | m = gfc_match (" enumerator"); |
10412 | if (m != MATCH_YES) | |
10413 | return m; | |
60fbbf9e | 10414 | |
10415 | m = gfc_match (" :: "); | |
10416 | if (m == MATCH_ERROR) | |
10417 | return m; | |
10418 | ||
10419 | colon_seen = (m == MATCH_YES); | |
e14bee04 | 10420 | |
3b6a4b41 | 10421 | if (gfc_current_state () != COMP_ENUM) |
10422 | { | |
10423 | gfc_error ("ENUM definition statement expected before %C"); | |
10424 | gfc_free_enum_history (); | |
10425 | return MATCH_ERROR; | |
10426 | } | |
10427 | ||
10428 | (¤t_ts)->type = BT_INTEGER; | |
10429 | (¤t_ts)->kind = gfc_c_int_kind; | |
e14bee04 | 10430 | |
60fbbf9e | 10431 | gfc_clear_attr (¤t_attr); |
10432 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, NULL); | |
60e19868 | 10433 | if (!t) |
3b6a4b41 | 10434 | { |
60fbbf9e | 10435 | m = MATCH_ERROR; |
3b6a4b41 | 10436 | goto cleanup; |
10437 | } | |
10438 | ||
3b6a4b41 | 10439 | for (;;) |
10440 | { | |
60fbbf9e | 10441 | m = enumerator_decl (); |
3b6a4b41 | 10442 | if (m == MATCH_ERROR) |
a8beb4f8 | 10443 | { |
10444 | gfc_free_enum_history (); | |
10445 | goto cleanup; | |
10446 | } | |
3b6a4b41 | 10447 | if (m == MATCH_NO) |
10448 | break; | |
10449 | ||
10450 | if (gfc_match_eos () == MATCH_YES) | |
10451 | goto cleanup; | |
10452 | if (gfc_match_char (',') != MATCH_YES) | |
10453 | break; | |
10454 | } | |
10455 | ||
10456 | if (gfc_current_state () == COMP_ENUM) | |
10457 | { | |
10458 | gfc_free_enum_history (); | |
10459 | gfc_error ("Syntax error in ENUMERATOR definition at %C"); | |
10460 | m = MATCH_ERROR; | |
10461 | } | |
10462 | ||
10463 | cleanup: | |
10464 | gfc_free_array_spec (current_as); | |
10465 | current_as = NULL; | |
10466 | return m; | |
10467 | ||
10468 | } | |
10469 | ||
e449e4dd | 10470 | |
7fd88f6e | 10471 | /* Match binding attributes. */ |
10472 | ||
10473 | static match | |
64e93293 | 10474 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc) |
7fd88f6e | 10475 | { |
10476 | bool found_passing = false; | |
64e93293 | 10477 | bool seen_ptr = false; |
fe9b08a2 | 10478 | match m = MATCH_YES; |
7fd88f6e | 10479 | |
df084314 | 10480 | /* Initialize to defaults. Do so even before the MATCH_NO check so that in |
7fd88f6e | 10481 | this case the defaults are in there. */ |
10482 | ba->access = ACCESS_UNKNOWN; | |
10483 | ba->pass_arg = NULL; | |
10484 | ba->pass_arg_num = 0; | |
10485 | ba->nopass = 0; | |
10486 | ba->non_overridable = 0; | |
61c3b81d | 10487 | ba->deferred = 0; |
fe9b08a2 | 10488 | ba->ppc = ppc; |
7fd88f6e | 10489 | |
10490 | /* If we find a comma, we believe there are binding attributes. */ | |
fe9b08a2 | 10491 | m = gfc_match_char (','); |
10492 | if (m == MATCH_NO) | |
10493 | goto done; | |
7fd88f6e | 10494 | |
10495 | do | |
10496 | { | |
e2f06a48 | 10497 | /* Access specifier. */ |
10498 | ||
10499 | m = gfc_match (" public"); | |
7fd88f6e | 10500 | if (m == MATCH_ERROR) |
10501 | goto error; | |
10502 | if (m == MATCH_YES) | |
10503 | { | |
e2f06a48 | 10504 | if (ba->access != ACCESS_UNKNOWN) |
7fd88f6e | 10505 | { |
e2f06a48 | 10506 | gfc_error ("Duplicate access-specifier at %C"); |
7fd88f6e | 10507 | goto error; |
10508 | } | |
10509 | ||
e2f06a48 | 10510 | ba->access = ACCESS_PUBLIC; |
7fd88f6e | 10511 | continue; |
10512 | } | |
10513 | ||
e2f06a48 | 10514 | m = gfc_match (" private"); |
7fd88f6e | 10515 | if (m == MATCH_ERROR) |
10516 | goto error; | |
10517 | if (m == MATCH_YES) | |
10518 | { | |
e2f06a48 | 10519 | if (ba->access != ACCESS_UNKNOWN) |
7fd88f6e | 10520 | { |
e2f06a48 | 10521 | gfc_error ("Duplicate access-specifier at %C"); |
7fd88f6e | 10522 | goto error; |
10523 | } | |
10524 | ||
e2f06a48 | 10525 | ba->access = ACCESS_PRIVATE; |
7fd88f6e | 10526 | continue; |
10527 | } | |
10528 | ||
e2f06a48 | 10529 | /* If inside GENERIC, the following is not allowed. */ |
10530 | if (!generic) | |
7fd88f6e | 10531 | { |
7fd88f6e | 10532 | |
e2f06a48 | 10533 | /* NOPASS flag. */ |
10534 | m = gfc_match (" nopass"); | |
10535 | if (m == MATCH_ERROR) | |
10536 | goto error; | |
10537 | if (m == MATCH_YES) | |
7fd88f6e | 10538 | { |
e2f06a48 | 10539 | if (found_passing) |
10540 | { | |
10541 | gfc_error ("Binding attributes already specify passing," | |
10542 | " illegal NOPASS at %C"); | |
10543 | goto error; | |
10544 | } | |
10545 | ||
10546 | found_passing = true; | |
10547 | ba->nopass = 1; | |
10548 | continue; | |
7fd88f6e | 10549 | } |
10550 | ||
e2f06a48 | 10551 | /* PASS possibly including argument. */ |
10552 | m = gfc_match (" pass"); | |
10553 | if (m == MATCH_ERROR) | |
10554 | goto error; | |
10555 | if (m == MATCH_YES) | |
7fd88f6e | 10556 | { |
e2f06a48 | 10557 | char arg[GFC_MAX_SYMBOL_LEN + 1]; |
10558 | ||
10559 | if (found_passing) | |
10560 | { | |
10561 | gfc_error ("Binding attributes already specify passing," | |
10562 | " illegal PASS at %C"); | |
10563 | goto error; | |
10564 | } | |
10565 | ||
10566 | m = gfc_match (" ( %n )", arg); | |
10567 | if (m == MATCH_ERROR) | |
10568 | goto error; | |
10569 | if (m == MATCH_YES) | |
dc326dc0 | 10570 | ba->pass_arg = gfc_get_string ("%s", arg); |
e2f06a48 | 10571 | gcc_assert ((m == MATCH_YES) == (ba->pass_arg != NULL)); |
10572 | ||
10573 | found_passing = true; | |
10574 | ba->nopass = 0; | |
10575 | continue; | |
7fd88f6e | 10576 | } |
10577 | ||
64e93293 | 10578 | if (ppc) |
10579 | { | |
10580 | /* POINTER flag. */ | |
10581 | m = gfc_match (" pointer"); | |
10582 | if (m == MATCH_ERROR) | |
10583 | goto error; | |
10584 | if (m == MATCH_YES) | |
10585 | { | |
10586 | if (seen_ptr) | |
10587 | { | |
10588 | gfc_error ("Duplicate POINTER attribute at %C"); | |
10589 | goto error; | |
10590 | } | |
10591 | ||
10592 | seen_ptr = true; | |
64e93293 | 10593 | continue; |
10594 | } | |
10595 | } | |
10596 | else | |
10597 | { | |
10598 | /* NON_OVERRIDABLE flag. */ | |
10599 | m = gfc_match (" non_overridable"); | |
10600 | if (m == MATCH_ERROR) | |
10601 | goto error; | |
10602 | if (m == MATCH_YES) | |
10603 | { | |
10604 | if (ba->non_overridable) | |
10605 | { | |
10606 | gfc_error ("Duplicate NON_OVERRIDABLE at %C"); | |
10607 | goto error; | |
10608 | } | |
10609 | ||
10610 | ba->non_overridable = 1; | |
10611 | continue; | |
10612 | } | |
10613 | ||
10614 | /* DEFERRED flag. */ | |
10615 | m = gfc_match (" deferred"); | |
10616 | if (m == MATCH_ERROR) | |
10617 | goto error; | |
10618 | if (m == MATCH_YES) | |
10619 | { | |
10620 | if (ba->deferred) | |
10621 | { | |
10622 | gfc_error ("Duplicate DEFERRED at %C"); | |
10623 | goto error; | |
10624 | } | |
10625 | ||
10626 | ba->deferred = 1; | |
10627 | continue; | |
10628 | } | |
10629 | } | |
10630 | ||
7fd88f6e | 10631 | } |
10632 | ||
10633 | /* Nothing matching found. */ | |
e2f06a48 | 10634 | if (generic) |
10635 | gfc_error ("Expected access-specifier at %C"); | |
10636 | else | |
10637 | gfc_error ("Expected binding attribute at %C"); | |
7fd88f6e | 10638 | goto error; |
10639 | } | |
10640 | while (gfc_match_char (',') == MATCH_YES); | |
10641 | ||
61c3b81d | 10642 | /* NON_OVERRIDABLE and DEFERRED exclude themselves. */ |
10643 | if (ba->non_overridable && ba->deferred) | |
10644 | { | |
10645 | gfc_error ("NON_OVERRIDABLE and DEFERRED can't both appear at %C"); | |
10646 | goto error; | |
10647 | } | |
10648 | ||
fe9b08a2 | 10649 | m = MATCH_YES; |
10650 | ||
10651 | done: | |
e2f06a48 | 10652 | if (ba->access == ACCESS_UNKNOWN) |
c41ff969 | 10653 | ba->access = ppc ? gfc_current_block()->component_access |
10654 | : gfc_typebound_default_access; | |
e2f06a48 | 10655 | |
64e93293 | 10656 | if (ppc && !seen_ptr) |
10657 | { | |
10658 | gfc_error ("POINTER attribute is required for procedure pointer component" | |
10659 | " at %C"); | |
10660 | goto error; | |
10661 | } | |
10662 | ||
fe9b08a2 | 10663 | return m; |
7fd88f6e | 10664 | |
10665 | error: | |
7fd88f6e | 10666 | return MATCH_ERROR; |
10667 | } | |
10668 | ||
10669 | ||
10670 | /* Match a PROCEDURE specific binding inside a derived type. */ | |
10671 | ||
10672 | static match | |
10673 | match_procedure_in_type (void) | |
10674 | { | |
10675 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10676 | char target_buf[GFC_MAX_SYMBOL_LEN + 1]; | |
7a3aaef8 | 10677 | char* target = NULL, *ifc = NULL; |
4a12b9ba | 10678 | gfc_typebound_proc tb; |
7fd88f6e | 10679 | bool seen_colons; |
10680 | bool seen_attrs; | |
10681 | match m; | |
10682 | gfc_symtree* stree; | |
10683 | gfc_namespace* ns; | |
10684 | gfc_symbol* block; | |
7a3aaef8 | 10685 | int num; |
7fd88f6e | 10686 | |
10687 | /* Check current state. */ | |
10688 | gcc_assert (gfc_state_stack->state == COMP_DERIVED_CONTAINS); | |
10689 | block = gfc_state_stack->previous->sym; | |
10690 | gcc_assert (block); | |
10691 | ||
61c3b81d | 10692 | /* Try to match PROCEDURE(interface). */ |
7fd88f6e | 10693 | if (gfc_match (" (") == MATCH_YES) |
10694 | { | |
61c3b81d | 10695 | m = gfc_match_name (target_buf); |
10696 | if (m == MATCH_ERROR) | |
10697 | return m; | |
10698 | if (m != MATCH_YES) | |
10699 | { | |
0d2b3c9c | 10700 | gfc_error ("Interface-name expected after %<(%> at %C"); |
61c3b81d | 10701 | return MATCH_ERROR; |
10702 | } | |
10703 | ||
10704 | if (gfc_match (" )") != MATCH_YES) | |
10705 | { | |
0d2b3c9c | 10706 | gfc_error ("%<)%> expected at %C"); |
61c3b81d | 10707 | return MATCH_ERROR; |
10708 | } | |
10709 | ||
7a3aaef8 | 10710 | ifc = target_buf; |
7fd88f6e | 10711 | } |
10712 | ||
10713 | /* Construct the data structure. */ | |
b3d1387f | 10714 | memset (&tb, 0, sizeof (tb)); |
4a12b9ba | 10715 | tb.where = gfc_current_locus; |
7fd88f6e | 10716 | |
10717 | /* Match binding attributes. */ | |
4a12b9ba | 10718 | m = match_binding_attributes (&tb, false, false); |
7fd88f6e | 10719 | if (m == MATCH_ERROR) |
10720 | return m; | |
10721 | seen_attrs = (m == MATCH_YES); | |
10722 | ||
7a3aaef8 | 10723 | /* Check that attribute DEFERRED is given if an interface is specified. */ |
4a12b9ba | 10724 | if (tb.deferred && !ifc) |
61c3b81d | 10725 | { |
10726 | gfc_error ("Interface must be specified for DEFERRED binding at %C"); | |
10727 | return MATCH_ERROR; | |
10728 | } | |
4a12b9ba | 10729 | if (ifc && !tb.deferred) |
61c3b81d | 10730 | { |
10731 | gfc_error ("PROCEDURE(interface) at %C should be declared DEFERRED"); | |
10732 | return MATCH_ERROR; | |
10733 | } | |
10734 | ||
7fd88f6e | 10735 | /* Match the colons. */ |
10736 | m = gfc_match (" ::"); | |
10737 | if (m == MATCH_ERROR) | |
10738 | return m; | |
10739 | seen_colons = (m == MATCH_YES); | |
10740 | if (seen_attrs && !seen_colons) | |
10741 | { | |
0d2b3c9c | 10742 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
7fd88f6e | 10743 | return MATCH_ERROR; |
10744 | } | |
10745 | ||
8db94b3b | 10746 | /* Match the binding names. */ |
7a3aaef8 | 10747 | for(num=1;;num++) |
7fd88f6e | 10748 | { |
7a3aaef8 | 10749 | m = gfc_match_name (name); |
10750 | if (m == MATCH_ERROR) | |
10751 | return m; | |
10752 | if (m == MATCH_NO) | |
61c3b81d | 10753 | { |
7a3aaef8 | 10754 | gfc_error ("Expected binding name at %C"); |
61c3b81d | 10755 | return MATCH_ERROR; |
10756 | } | |
10757 | ||
60e19868 | 10758 | if (num>1 && !gfc_notify_std (GFC_STD_F2008, "PROCEDURE list at %C")) |
7a3aaef8 | 10759 | return MATCH_ERROR; |
7fd88f6e | 10760 | |
7a3aaef8 | 10761 | /* Try to match the '=> target', if it's there. */ |
10762 | target = ifc; | |
10763 | m = gfc_match (" =>"); | |
7fd88f6e | 10764 | if (m == MATCH_ERROR) |
10765 | return m; | |
7a3aaef8 | 10766 | if (m == MATCH_YES) |
7fd88f6e | 10767 | { |
4a12b9ba | 10768 | if (tb.deferred) |
7a3aaef8 | 10769 | { |
0d2b3c9c | 10770 | gfc_error ("%<=> target%> is invalid for DEFERRED binding at %C"); |
7a3aaef8 | 10771 | return MATCH_ERROR; |
10772 | } | |
10773 | ||
10774 | if (!seen_colons) | |
10775 | { | |
0d2b3c9c | 10776 | gfc_error ("%<::%> needed in PROCEDURE binding with explicit target" |
7a3aaef8 | 10777 | " at %C"); |
10778 | return MATCH_ERROR; | |
10779 | } | |
10780 | ||
10781 | m = gfc_match_name (target_buf); | |
10782 | if (m == MATCH_ERROR) | |
10783 | return m; | |
10784 | if (m == MATCH_NO) | |
10785 | { | |
0d2b3c9c | 10786 | gfc_error ("Expected binding target after %<=>%> at %C"); |
7a3aaef8 | 10787 | return MATCH_ERROR; |
10788 | } | |
10789 | target = target_buf; | |
7fd88f6e | 10790 | } |
7fd88f6e | 10791 | |
7a3aaef8 | 10792 | /* If no target was found, it has the same name as the binding. */ |
10793 | if (!target) | |
10794 | target = name; | |
7fd88f6e | 10795 | |
7a3aaef8 | 10796 | /* Get the namespace to insert the symbols into. */ |
10797 | ns = block->f2k_derived; | |
10798 | gcc_assert (ns); | |
7fd88f6e | 10799 | |
7a3aaef8 | 10800 | /* If the binding is DEFERRED, check that the containing type is ABSTRACT. */ |
4a12b9ba | 10801 | if (tb.deferred && !block->attr.abstract) |
7a3aaef8 | 10802 | { |
716da296 | 10803 | gfc_error ("Type %qs containing DEFERRED binding at %C " |
7a3aaef8 | 10804 | "is not ABSTRACT", block->name); |
10805 | return MATCH_ERROR; | |
10806 | } | |
7fd88f6e | 10807 | |
7a3aaef8 | 10808 | /* See if we already have a binding with this name in the symtree which |
9834e1b6 | 10809 | would be an error. If a GENERIC already targeted this binding, it may |
7a3aaef8 | 10810 | be already there but then typebound is still NULL. */ |
10811 | stree = gfc_find_symtree (ns->tb_sym_root, name); | |
e204cb62 | 10812 | if (stree && stree->n.tb) |
7a3aaef8 | 10813 | { |
716da296 | 10814 | gfc_error ("There is already a procedure with binding name %qs for " |
10815 | "the derived type %qs at %C", name, block->name); | |
7a3aaef8 | 10816 | return MATCH_ERROR; |
10817 | } | |
61c3b81d | 10818 | |
7a3aaef8 | 10819 | /* Insert it and set attributes. */ |
7fd88f6e | 10820 | |
e204cb62 | 10821 | if (!stree) |
10822 | { | |
10823 | stree = gfc_new_symtree (&ns->tb_sym_root, name); | |
10824 | gcc_assert (stree); | |
10825 | } | |
4a12b9ba | 10826 | stree->n.tb = gfc_get_typebound_proc (&tb); |
3323e9b1 | 10827 | |
4a12b9ba | 10828 | if (gfc_get_sym_tree (target, gfc_current_ns, &stree->n.tb->u.specific, |
10829 | false)) | |
7a3aaef8 | 10830 | return MATCH_ERROR; |
4a12b9ba | 10831 | gfc_set_sym_referenced (stree->n.tb->u.specific->n.sym); |
1f302f2e | 10832 | gfc_add_flavor(&stree->n.tb->u.specific->n.sym->attr, FL_PROCEDURE, |
10833 | target, &stree->n.tb->u.specific->n.sym->declared_at); | |
8db94b3b | 10834 | |
7a3aaef8 | 10835 | if (gfc_match_eos () == MATCH_YES) |
10836 | return MATCH_YES; | |
10837 | if (gfc_match_char (',') != MATCH_YES) | |
10838 | goto syntax; | |
3323e9b1 | 10839 | } |
7fd88f6e | 10840 | |
7a3aaef8 | 10841 | syntax: |
10842 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
10843 | return MATCH_ERROR; | |
7fd88f6e | 10844 | } |
10845 | ||
10846 | ||
e2f06a48 | 10847 | /* Match a GENERIC procedure binding inside a derived type. */ |
10848 | ||
10849 | match | |
10850 | gfc_match_generic (void) | |
10851 | { | |
10852 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
a36eb9ee | 10853 | char bind_name[GFC_MAX_SYMBOL_LEN + 16]; /* Allow space for OPERATOR(...). */ |
e2f06a48 | 10854 | gfc_symbol* block; |
10855 | gfc_typebound_proc tbattr; /* Used for match_binding_attributes. */ | |
10856 | gfc_typebound_proc* tb; | |
e2f06a48 | 10857 | gfc_namespace* ns; |
a36eb9ee | 10858 | interface_type op_type; |
10859 | gfc_intrinsic_op op; | |
e2f06a48 | 10860 | match m; |
10861 | ||
10862 | /* Check current state. */ | |
10863 | if (gfc_current_state () == COMP_DERIVED) | |
10864 | { | |
10865 | gfc_error ("GENERIC at %C must be inside a derived-type CONTAINS"); | |
10866 | return MATCH_ERROR; | |
10867 | } | |
10868 | if (gfc_current_state () != COMP_DERIVED_CONTAINS) | |
10869 | return MATCH_NO; | |
10870 | block = gfc_state_stack->previous->sym; | |
10871 | ns = block->f2k_derived; | |
10872 | gcc_assert (block && ns); | |
10873 | ||
b3d1387f | 10874 | memset (&tbattr, 0, sizeof (tbattr)); |
10875 | tbattr.where = gfc_current_locus; | |
10876 | ||
e2f06a48 | 10877 | /* See if we get an access-specifier. */ |
64e93293 | 10878 | m = match_binding_attributes (&tbattr, true, false); |
e2f06a48 | 10879 | if (m == MATCH_ERROR) |
10880 | goto error; | |
10881 | ||
10882 | /* Now the colons, those are required. */ | |
10883 | if (gfc_match (" ::") != MATCH_YES) | |
10884 | { | |
0d2b3c9c | 10885 | gfc_error ("Expected %<::%> at %C"); |
e2f06a48 | 10886 | goto error; |
10887 | } | |
10888 | ||
a36eb9ee | 10889 | /* Match the binding name; depending on type (operator / generic) format |
10890 | it for future error messages into bind_name. */ | |
8db94b3b | 10891 | |
a36eb9ee | 10892 | m = gfc_match_generic_spec (&op_type, name, &op); |
e2f06a48 | 10893 | if (m == MATCH_ERROR) |
10894 | return MATCH_ERROR; | |
10895 | if (m == MATCH_NO) | |
10896 | { | |
a36eb9ee | 10897 | gfc_error ("Expected generic name or operator descriptor at %C"); |
e2f06a48 | 10898 | goto error; |
10899 | } | |
10900 | ||
a36eb9ee | 10901 | switch (op_type) |
e2f06a48 | 10902 | { |
a36eb9ee | 10903 | case INTERFACE_GENERIC: |
9f732c4e | 10904 | case INTERFACE_DTIO: |
a36eb9ee | 10905 | snprintf (bind_name, sizeof (bind_name), "%s", name); |
10906 | break; | |
8db94b3b | 10907 | |
a36eb9ee | 10908 | case INTERFACE_USER_OP: |
10909 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(.%s.)", name); | |
10910 | break; | |
8db94b3b | 10911 | |
a36eb9ee | 10912 | case INTERFACE_INTRINSIC_OP: |
10913 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(%s)", | |
10914 | gfc_op2string (op)); | |
10915 | break; | |
10916 | ||
7e8f55c1 | 10917 | case INTERFACE_NAMELESS: |
10918 | gfc_error ("Malformed GENERIC statement at %C"); | |
10919 | goto error; | |
10920 | break; | |
10921 | ||
a36eb9ee | 10922 | default: |
10923 | gcc_unreachable (); | |
10924 | } | |
3323e9b1 | 10925 | |
a36eb9ee | 10926 | /* Match the required =>. */ |
10927 | if (gfc_match (" =>") != MATCH_YES) | |
10928 | { | |
0d2b3c9c | 10929 | gfc_error ("Expected %<=>%> at %C"); |
a36eb9ee | 10930 | goto error; |
10931 | } | |
8db94b3b | 10932 | |
a36eb9ee | 10933 | /* Try to find existing GENERIC binding with this name / for this operator; |
10934 | if there is something, check that it is another GENERIC and then extend | |
10935 | it rather than building a new node. Otherwise, create it and put it | |
10936 | at the right position. */ | |
10937 | ||
10938 | switch (op_type) | |
10939 | { | |
9f732c4e | 10940 | case INTERFACE_DTIO: |
a36eb9ee | 10941 | case INTERFACE_USER_OP: |
10942 | case INTERFACE_GENERIC: | |
10943 | { | |
10944 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
10945 | gfc_symtree* st; | |
10946 | ||
10947 | st = gfc_find_symtree (is_op ? ns->tb_uop_root : ns->tb_sym_root, name); | |
f7b2c82b | 10948 | tb = st ? st->n.tb : NULL; |
a36eb9ee | 10949 | break; |
10950 | } | |
10951 | ||
10952 | case INTERFACE_INTRINSIC_OP: | |
10953 | tb = ns->tb_op[op]; | |
10954 | break; | |
10955 | ||
10956 | default: | |
10957 | gcc_unreachable (); | |
10958 | } | |
10959 | ||
10960 | if (tb) | |
10961 | { | |
3323e9b1 | 10962 | if (!tb->is_generic) |
e2f06a48 | 10963 | { |
a36eb9ee | 10964 | gcc_assert (op_type == INTERFACE_GENERIC); |
e2f06a48 | 10965 | gfc_error ("There's already a non-generic procedure with binding name" |
716da296 | 10966 | " %qs for the derived type %qs at %C", |
a36eb9ee | 10967 | bind_name, block->name); |
e2f06a48 | 10968 | goto error; |
10969 | } | |
10970 | ||
e2f06a48 | 10971 | if (tb->access != tbattr.access) |
10972 | { | |
10973 | gfc_error ("Binding at %C must have the same access as already" | |
716da296 | 10974 | " defined binding %qs", bind_name); |
e2f06a48 | 10975 | goto error; |
10976 | } | |
10977 | } | |
10978 | else | |
10979 | { | |
4a12b9ba | 10980 | tb = gfc_get_typebound_proc (NULL); |
e2f06a48 | 10981 | tb->where = gfc_current_locus; |
10982 | tb->access = tbattr.access; | |
10983 | tb->is_generic = 1; | |
10984 | tb->u.generic = NULL; | |
a36eb9ee | 10985 | |
10986 | switch (op_type) | |
10987 | { | |
9f732c4e | 10988 | case INTERFACE_DTIO: |
a36eb9ee | 10989 | case INTERFACE_GENERIC: |
10990 | case INTERFACE_USER_OP: | |
10991 | { | |
10992 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
f7b2c82b | 10993 | gfc_symtree* st = gfc_get_tbp_symtree (is_op ? &ns->tb_uop_root : |
10994 | &ns->tb_sym_root, name); | |
a36eb9ee | 10995 | gcc_assert (st); |
10996 | st->n.tb = tb; | |
10997 | ||
10998 | break; | |
10999 | } | |
8db94b3b | 11000 | |
a36eb9ee | 11001 | case INTERFACE_INTRINSIC_OP: |
11002 | ns->tb_op[op] = tb; | |
11003 | break; | |
11004 | ||
11005 | default: | |
11006 | gcc_unreachable (); | |
11007 | } | |
e2f06a48 | 11008 | } |
11009 | ||
11010 | /* Now, match all following names as specific targets. */ | |
11011 | do | |
11012 | { | |
11013 | gfc_symtree* target_st; | |
11014 | gfc_tbp_generic* target; | |
11015 | ||
11016 | m = gfc_match_name (name); | |
11017 | if (m == MATCH_ERROR) | |
11018 | goto error; | |
11019 | if (m == MATCH_NO) | |
11020 | { | |
11021 | gfc_error ("Expected specific binding name at %C"); | |
11022 | goto error; | |
11023 | } | |
11024 | ||
3323e9b1 | 11025 | target_st = gfc_get_tbp_symtree (&ns->tb_sym_root, name); |
e2f06a48 | 11026 | |
11027 | /* See if this is a duplicate specification. */ | |
11028 | for (target = tb->u.generic; target; target = target->next) | |
11029 | if (target_st == target->specific_st) | |
11030 | { | |
716da296 | 11031 | gfc_error ("%qs already defined as specific binding for the" |
11032 | " generic %qs at %C", name, bind_name); | |
e2f06a48 | 11033 | goto error; |
11034 | } | |
11035 | ||
e2f06a48 | 11036 | target = gfc_get_tbp_generic (); |
11037 | target->specific_st = target_st; | |
11038 | target->specific = NULL; | |
11039 | target->next = tb->u.generic; | |
5c0f7d99 | 11040 | target->is_operator = ((op_type == INTERFACE_USER_OP) |
11041 | || (op_type == INTERFACE_INTRINSIC_OP)); | |
e2f06a48 | 11042 | tb->u.generic = target; |
11043 | } | |
11044 | while (gfc_match (" ,") == MATCH_YES); | |
11045 | ||
11046 | /* Here should be the end. */ | |
11047 | if (gfc_match_eos () != MATCH_YES) | |
11048 | { | |
11049 | gfc_error ("Junk after GENERIC binding at %C"); | |
11050 | goto error; | |
11051 | } | |
11052 | ||
11053 | return MATCH_YES; | |
11054 | ||
11055 | error: | |
11056 | return MATCH_ERROR; | |
11057 | } | |
11058 | ||
11059 | ||
223f0f57 | 11060 | /* Match a FINAL declaration inside a derived type. */ |
11061 | ||
11062 | match | |
11063 | gfc_match_final_decl (void) | |
11064 | { | |
11065 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
11066 | gfc_symbol* sym; | |
11067 | match m; | |
11068 | gfc_namespace* module_ns; | |
11069 | bool first, last; | |
7fd88f6e | 11070 | gfc_symbol* block; |
223f0f57 | 11071 | |
519651c1 | 11072 | if (gfc_current_form == FORM_FREE) |
11073 | { | |
11074 | char c = gfc_peek_ascii_char (); | |
11075 | if (!gfc_is_whitespace (c) && c != ':') | |
11076 | return MATCH_NO; | |
11077 | } | |
8db94b3b | 11078 | |
7fd88f6e | 11079 | if (gfc_state_stack->state != COMP_DERIVED_CONTAINS) |
223f0f57 | 11080 | { |
519651c1 | 11081 | if (gfc_current_form == FORM_FIXED) |
11082 | return MATCH_NO; | |
11083 | ||
223f0f57 | 11084 | gfc_error ("FINAL declaration at %C must be inside a derived type " |
7fd88f6e | 11085 | "CONTAINS section"); |
223f0f57 | 11086 | return MATCH_ERROR; |
11087 | } | |
11088 | ||
7fd88f6e | 11089 | block = gfc_state_stack->previous->sym; |
11090 | gcc_assert (block); | |
223f0f57 | 11091 | |
7fd88f6e | 11092 | if (!gfc_state_stack->previous || !gfc_state_stack->previous->previous |
11093 | || gfc_state_stack->previous->previous->state != COMP_MODULE) | |
223f0f57 | 11094 | { |
11095 | gfc_error ("Derived type declaration with FINAL at %C must be in the" | |
11096 | " specification part of a MODULE"); | |
11097 | return MATCH_ERROR; | |
11098 | } | |
11099 | ||
11100 | module_ns = gfc_current_ns; | |
11101 | gcc_assert (module_ns); | |
11102 | gcc_assert (module_ns->proc_name->attr.flavor == FL_MODULE); | |
11103 | ||
11104 | /* Match optional ::, don't care about MATCH_YES or MATCH_NO. */ | |
11105 | if (gfc_match (" ::") == MATCH_ERROR) | |
11106 | return MATCH_ERROR; | |
11107 | ||
11108 | /* Match the sequence of procedure names. */ | |
11109 | first = true; | |
11110 | last = false; | |
11111 | do | |
11112 | { | |
11113 | gfc_finalizer* f; | |
11114 | ||
11115 | if (first && gfc_match_eos () == MATCH_YES) | |
11116 | { | |
11117 | gfc_error ("Empty FINAL at %C"); | |
11118 | return MATCH_ERROR; | |
11119 | } | |
11120 | ||
11121 | m = gfc_match_name (name); | |
11122 | if (m == MATCH_NO) | |
11123 | { | |
11124 | gfc_error ("Expected module procedure name at %C"); | |
11125 | return MATCH_ERROR; | |
11126 | } | |
11127 | else if (m != MATCH_YES) | |
11128 | return MATCH_ERROR; | |
11129 | ||
11130 | if (gfc_match_eos () == MATCH_YES) | |
11131 | last = true; | |
11132 | if (!last && gfc_match_char (',') != MATCH_YES) | |
11133 | { | |
0d2b3c9c | 11134 | gfc_error ("Expected %<,%> at %C"); |
223f0f57 | 11135 | return MATCH_ERROR; |
11136 | } | |
11137 | ||
11138 | if (gfc_get_symbol (name, module_ns, &sym)) | |
11139 | { | |
716da296 | 11140 | gfc_error ("Unknown procedure name %qs at %C", name); |
223f0f57 | 11141 | return MATCH_ERROR; |
11142 | } | |
11143 | ||
11144 | /* Mark the symbol as module procedure. */ | |
11145 | if (sym->attr.proc != PROC_MODULE | |
60e19868 | 11146 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
223f0f57 | 11147 | return MATCH_ERROR; |
11148 | ||
11149 | /* Check if we already have this symbol in the list, this is an error. */ | |
7fd88f6e | 11150 | for (f = block->f2k_derived->finalizers; f; f = f->next) |
e449e4dd | 11151 | if (f->proc_sym == sym) |
223f0f57 | 11152 | { |
c2a4993a | 11153 | gfc_error ("%qs at %C is already defined as FINAL procedure", |
223f0f57 | 11154 | name); |
11155 | return MATCH_ERROR; | |
11156 | } | |
11157 | ||
11158 | /* Add this symbol to the list of finalizers. */ | |
7fd88f6e | 11159 | gcc_assert (block->f2k_derived); |
c77c84dd | 11160 | sym->refs++; |
48d8ad5a | 11161 | f = XCNEW (gfc_finalizer); |
e449e4dd | 11162 | f->proc_sym = sym; |
11163 | f->proc_tree = NULL; | |
223f0f57 | 11164 | f->where = gfc_current_locus; |
7fd88f6e | 11165 | f->next = block->f2k_derived->finalizers; |
11166 | block->f2k_derived->finalizers = f; | |
223f0f57 | 11167 | |
11168 | first = false; | |
11169 | } | |
11170 | while (!last); | |
11171 | ||
11172 | return MATCH_YES; | |
11173 | } | |
36b0a1b0 | 11174 | |
11175 | ||
11176 | const ext_attr_t ext_attr_list[] = { | |
fa76a552 | 11177 | { "dllimport", EXT_ATTR_DLLIMPORT, "dllimport" }, |
11178 | { "dllexport", EXT_ATTR_DLLEXPORT, "dllexport" }, | |
11179 | { "cdecl", EXT_ATTR_CDECL, "cdecl" }, | |
11180 | { "stdcall", EXT_ATTR_STDCALL, "stdcall" }, | |
11181 | { "fastcall", EXT_ATTR_FASTCALL, "fastcall" }, | |
11182 | { "no_arg_check", EXT_ATTR_NO_ARG_CHECK, NULL }, | |
11183 | { NULL, EXT_ATTR_LAST, NULL } | |
36b0a1b0 | 11184 | }; |
11185 | ||
11186 | /* Match a !GCC$ ATTRIBUTES statement of the form: | |
11187 | !GCC$ ATTRIBUTES attribute-list :: var-name [, var-name] ... | |
11188 | When we come here, we have already matched the !GCC$ ATTRIBUTES string. | |
11189 | ||
11190 | TODO: We should support all GCC attributes using the same syntax for | |
11191 | the attribute list, i.e. the list in C | |
11192 | __attributes(( attribute-list )) | |
11193 | matches then | |
11194 | !GCC$ ATTRIBUTES attribute-list :: | |
11195 | Cf. c-parser.c's c_parser_attributes; the data can then directly be | |
11196 | saved into a TREE. | |
11197 | ||
11198 | As there is absolutely no risk of confusion, we should never return | |
11199 | MATCH_NO. */ | |
11200 | match | |
11201 | gfc_match_gcc_attributes (void) | |
8db94b3b | 11202 | { |
36b0a1b0 | 11203 | symbol_attribute attr; |
11204 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
11205 | unsigned id; | |
11206 | gfc_symbol *sym; | |
11207 | match m; | |
11208 | ||
11209 | gfc_clear_attr (&attr); | |
11210 | for(;;) | |
11211 | { | |
11212 | char ch; | |
11213 | ||
11214 | if (gfc_match_name (name) != MATCH_YES) | |
11215 | return MATCH_ERROR; | |
11216 | ||
11217 | for (id = 0; id < EXT_ATTR_LAST; id++) | |
11218 | if (strcmp (name, ext_attr_list[id].name) == 0) | |
11219 | break; | |
11220 | ||
11221 | if (id == EXT_ATTR_LAST) | |
11222 | { | |
11223 | gfc_error ("Unknown attribute in !GCC$ ATTRIBUTES statement at %C"); | |
11224 | return MATCH_ERROR; | |
11225 | } | |
11226 | ||
60e19868 | 11227 | if (!gfc_add_ext_attribute (&attr, (ext_attr_id_t)id, &gfc_current_locus)) |
36b0a1b0 | 11228 | return MATCH_ERROR; |
11229 | ||
11230 | gfc_gobble_whitespace (); | |
11231 | ch = gfc_next_ascii_char (); | |
11232 | if (ch == ':') | |
11233 | { | |
11234 | /* This is the successful exit condition for the loop. */ | |
11235 | if (gfc_next_ascii_char () == ':') | |
11236 | break; | |
11237 | } | |
11238 | ||
11239 | if (ch == ',') | |
11240 | continue; | |
11241 | ||
11242 | goto syntax; | |
11243 | } | |
11244 | ||
11245 | if (gfc_match_eos () == MATCH_YES) | |
11246 | goto syntax; | |
11247 | ||
11248 | for(;;) | |
11249 | { | |
11250 | m = gfc_match_name (name); | |
11251 | if (m != MATCH_YES) | |
11252 | return m; | |
11253 | ||
11254 | if (find_special (name, &sym, true)) | |
11255 | return MATCH_ERROR; | |
8db94b3b | 11256 | |
36b0a1b0 | 11257 | sym->attr.ext_attr |= attr.ext_attr; |
11258 | ||
11259 | if (gfc_match_eos () == MATCH_YES) | |
11260 | break; | |
11261 | ||
11262 | if (gfc_match_char (',') != MATCH_YES) | |
11263 | goto syntax; | |
11264 | } | |
11265 | ||
11266 | return MATCH_YES; | |
11267 | ||
11268 | syntax: | |
11269 | gfc_error ("Syntax error in !GCC$ ATTRIBUTES statement at %C"); | |
11270 | return MATCH_ERROR; | |
11271 | } | |
82841c8f | 11272 | |
11273 | ||
11274 | /* Match a !GCC$ UNROLL statement of the form: | |
11275 | !GCC$ UNROLL n | |
11276 | ||
11277 | The parameter n is the number of times we are supposed to unroll. | |
11278 | ||
11279 | When we come here, we have already matched the !GCC$ UNROLL string. */ | |
11280 | match | |
11281 | gfc_match_gcc_unroll (void) | |
11282 | { | |
11283 | int value; | |
11284 | ||
11285 | if (gfc_match_small_int (&value) == MATCH_YES) | |
11286 | { | |
11287 | if (value < 0 || value > USHRT_MAX) | |
11288 | { | |
11289 | gfc_error ("%<GCC unroll%> directive requires a" | |
11290 | " non-negative integral constant" | |
11291 | " less than or equal to %u at %C", | |
11292 | USHRT_MAX | |
11293 | ); | |
11294 | return MATCH_ERROR; | |
11295 | } | |
11296 | if (gfc_match_eos () == MATCH_YES) | |
11297 | { | |
11298 | directive_unroll = value == 0 ? 1 : value; | |
11299 | return MATCH_YES; | |
11300 | } | |
11301 | } | |
11302 | ||
11303 | gfc_error ("Syntax error in !GCC$ UNROLL directive at %C"); | |
11304 | return MATCH_ERROR; | |
11305 | } | |
f052211c | 11306 | |
11307 | /* Match a !GCC$ builtin (b) attributes simd flags form: | |
11308 | ||
11309 | The parameter b is name of a middle-end built-in. | |
11310 | Flags are one of: | |
11311 | - (empty) | |
11312 | - inbranch | |
11313 | - notinbranch | |
11314 | ||
11315 | When we come here, we have already matched the !GCC$ builtin string. */ | |
11316 | match | |
11317 | gfc_match_gcc_builtin (void) | |
11318 | { | |
11319 | char builtin[GFC_MAX_SYMBOL_LEN + 1]; | |
11320 | ||
11321 | if (gfc_match (" ( %n ) attributes simd", builtin) != MATCH_YES) | |
11322 | return MATCH_ERROR; | |
11323 | ||
11324 | gfc_simd_clause clause = SIMD_NONE; | |
11325 | if (gfc_match (" ( notinbranch ) ") == MATCH_YES) | |
11326 | clause = SIMD_NOTINBRANCH; | |
11327 | else if (gfc_match (" ( inbranch ) ") == MATCH_YES) | |
11328 | clause = SIMD_INBRANCH; | |
11329 | ||
11330 | if (gfc_vectorized_builtins == NULL) | |
11331 | gfc_vectorized_builtins = new hash_map<nofree_string_hash, int> (); | |
11332 | ||
11333 | char *r = XNEWVEC (char, strlen (builtin) + 32); | |
11334 | sprintf (r, "__builtin_%s", builtin); | |
11335 | ||
11336 | bool existed; | |
11337 | int &value = gfc_vectorized_builtins->get_or_insert (r, &existed); | |
11338 | value |= clause; | |
11339 | if (existed) | |
11340 | free (r); | |
11341 | ||
11342 | return MATCH_YES; | |
11343 | } |