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4ee9c684 | 1 | /* Declaration statement matcher |
8e8f6434 | 2 | Copyright (C) 2002-2018 Free Software Foundation, Inc. |
4ee9c684 | 3 | Contributed by Andy Vaught |
4 | ||
c84b470d | 5 | This file is part of GCC. |
4ee9c684 | 6 | |
c84b470d | 7 | GCC is free software; you can redistribute it and/or modify it under |
8 | the terms of the GNU General Public License as published by the Free | |
bdabe786 | 9 | Software Foundation; either version 3, or (at your option) any later |
c84b470d | 10 | version. |
4ee9c684 | 11 | |
c84b470d | 12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
4ee9c684 | 16 | |
17 | You should have received a copy of the GNU General Public License | |
bdabe786 | 18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
4ee9c684 | 20 | |
4ee9c684 | 21 | #include "config.h" |
7436502b | 22 | #include "system.h" |
e4d6c7fc | 23 | #include "coretypes.h" |
4cba6f60 | 24 | #include "options.h" |
25 | #include "tree.h" | |
4ee9c684 | 26 | #include "gfortran.h" |
4cba6f60 | 27 | #include "stringpool.h" |
4ee9c684 | 28 | #include "match.h" |
29 | #include "parse.h" | |
126387b5 | 30 | #include "constructor.h" |
cbbac028 | 31 | |
32 | /* Macros to access allocate memory for gfc_data_variable, | |
33 | gfc_data_value and gfc_data. */ | |
48d8ad5a | 34 | #define gfc_get_data_variable() XCNEW (gfc_data_variable) |
35 | #define gfc_get_data_value() XCNEW (gfc_data_value) | |
36 | #define gfc_get_data() XCNEW (gfc_data) | |
cbbac028 | 37 | |
38 | ||
60e19868 | 39 | static bool set_binding_label (const char **, const char *, int); |
7b2060ba | 40 | |
41 | ||
36ae04f2 | 42 | /* This flag is set if an old-style length selector is matched |
4ee9c684 | 43 | during a type-declaration statement. */ |
44 | ||
45 | static int old_char_selector; | |
46 | ||
5739e54e | 47 | /* When variables acquire types and attributes from a declaration |
4ee9c684 | 48 | statement, they get them from the following static variables. The |
49 | first part of a declaration sets these variables and the second | |
50 | part copies these into symbol structures. */ | |
51 | ||
52 | static gfc_typespec current_ts; | |
53 | ||
54 | static symbol_attribute current_attr; | |
55 | static gfc_array_spec *current_as; | |
56 | static int colon_seen; | |
8ef2cf76 | 57 | static int attr_seen; |
4ee9c684 | 58 | |
c5d33754 | 59 | /* The current binding label (if any). */ |
1d8a57d8 | 60 | static const char* curr_binding_label; |
c5d33754 | 61 | /* Need to know how many identifiers are on the current data declaration |
62 | line in case we're given the BIND(C) attribute with a NAME= specifier. */ | |
63 | static int num_idents_on_line; | |
64 | /* Need to know if a NAME= specifier was found during gfc_match_bind_c so we | |
65 | can supply a name if the curr_binding_label is nil and NAME= was not. */ | |
66 | static int has_name_equals = 0; | |
67 | ||
3b6a4b41 | 68 | /* Initializer of the previous enumerator. */ |
69 | ||
70 | static gfc_expr *last_initializer; | |
71 | ||
72 | /* History of all the enumerators is maintained, so that | |
73 | kind values of all the enumerators could be updated depending | |
74 | upon the maximum initialized value. */ | |
75 | ||
76 | typedef struct enumerator_history | |
77 | { | |
78 | gfc_symbol *sym; | |
79 | gfc_expr *initializer; | |
80 | struct enumerator_history *next; | |
81 | } | |
82 | enumerator_history; | |
83 | ||
84 | /* Header of enum history chain. */ | |
85 | ||
86 | static enumerator_history *enum_history = NULL; | |
87 | ||
88 | /* Pointer of enum history node containing largest initializer. */ | |
89 | ||
90 | static enumerator_history *max_enum = NULL; | |
91 | ||
4ee9c684 | 92 | /* gfc_new_block points to the symbol of a newly matched block. */ |
93 | ||
94 | gfc_symbol *gfc_new_block; | |
95 | ||
077932f9 | 96 | bool gfc_matching_function; |
67a51c8e | 97 | |
82841c8f | 98 | /* Set upon parsing a !GCC$ unroll n directive for use in the next loop. */ |
99 | int directive_unroll = -1; | |
100 | ||
f052211c | 101 | /* Map of middle-end built-ins that should be vectorized. */ |
102 | hash_map<nofree_string_hash, int> *gfc_vectorized_builtins; | |
103 | ||
9d958d5b | 104 | /* If a kind expression of a component of a parameterized derived type is |
105 | parameterized, temporarily store the expression here. */ | |
106 | static gfc_expr *saved_kind_expr = NULL; | |
107 | ||
108 | /* Used to store the parameter list arising in a PDT declaration and | |
109 | in the typespec of a PDT variable or component. */ | |
110 | static gfc_actual_arglist *decl_type_param_list; | |
111 | static gfc_actual_arglist *type_param_spec_list; | |
112 | ||
b4f45d02 | 113 | /********************* DATA statement subroutines *********************/ |
114 | ||
1bfea7e8 | 115 | static bool in_match_data = false; |
116 | ||
117 | bool | |
118 | gfc_in_match_data (void) | |
119 | { | |
120 | return in_match_data; | |
121 | } | |
122 | ||
cbbac028 | 123 | static void |
124 | set_in_match_data (bool set_value) | |
1bfea7e8 | 125 | { |
126 | in_match_data = set_value; | |
127 | } | |
128 | ||
b4f45d02 | 129 | /* Free a gfc_data_variable structure and everything beneath it. */ |
130 | ||
131 | static void | |
1a9745d2 | 132 | free_variable (gfc_data_variable *p) |
b4f45d02 | 133 | { |
134 | gfc_data_variable *q; | |
135 | ||
136 | for (; p; p = q) | |
137 | { | |
138 | q = p->next; | |
139 | gfc_free_expr (p->expr); | |
140 | gfc_free_iterator (&p->iter, 0); | |
141 | free_variable (p->list); | |
434f0922 | 142 | free (p); |
b4f45d02 | 143 | } |
144 | } | |
145 | ||
146 | ||
147 | /* Free a gfc_data_value structure and everything beneath it. */ | |
148 | ||
149 | static void | |
1a9745d2 | 150 | free_value (gfc_data_value *p) |
b4f45d02 | 151 | { |
152 | gfc_data_value *q; | |
153 | ||
154 | for (; p; p = q) | |
155 | { | |
156 | q = p->next; | |
2d4466dd | 157 | mpz_clear (p->repeat); |
b4f45d02 | 158 | gfc_free_expr (p->expr); |
434f0922 | 159 | free (p); |
b4f45d02 | 160 | } |
161 | } | |
162 | ||
163 | ||
164 | /* Free a list of gfc_data structures. */ | |
165 | ||
166 | void | |
1a9745d2 | 167 | gfc_free_data (gfc_data *p) |
b4f45d02 | 168 | { |
169 | gfc_data *q; | |
170 | ||
171 | for (; p; p = q) | |
172 | { | |
173 | q = p->next; | |
b4f45d02 | 174 | free_variable (p->var); |
175 | free_value (p->value); | |
434f0922 | 176 | free (p); |
b4f45d02 | 177 | } |
178 | } | |
179 | ||
180 | ||
af29c1f0 | 181 | /* Free all data in a namespace. */ |
1a9745d2 | 182 | |
af29c1f0 | 183 | static void |
f6d0e37a | 184 | gfc_free_data_all (gfc_namespace *ns) |
af29c1f0 | 185 | { |
186 | gfc_data *d; | |
187 | ||
188 | for (;ns->data;) | |
189 | { | |
190 | d = ns->data->next; | |
434f0922 | 191 | free (ns->data); |
af29c1f0 | 192 | ns->data = d; |
193 | } | |
194 | } | |
195 | ||
388ce1b2 | 196 | /* Reject data parsed since the last restore point was marked. */ |
197 | ||
198 | void | |
199 | gfc_reject_data (gfc_namespace *ns) | |
200 | { | |
201 | gfc_data *d; | |
202 | ||
203 | while (ns->data && ns->data != ns->old_data) | |
204 | { | |
205 | d = ns->data->next; | |
206 | free (ns->data); | |
207 | ns->data = d; | |
208 | } | |
209 | } | |
af29c1f0 | 210 | |
b4f45d02 | 211 | static match var_element (gfc_data_variable *); |
212 | ||
213 | /* Match a list of variables terminated by an iterator and a right | |
214 | parenthesis. */ | |
215 | ||
216 | static match | |
1a9745d2 | 217 | var_list (gfc_data_variable *parent) |
b4f45d02 | 218 | { |
219 | gfc_data_variable *tail, var; | |
220 | match m; | |
221 | ||
222 | m = var_element (&var); | |
223 | if (m == MATCH_ERROR) | |
224 | return MATCH_ERROR; | |
225 | if (m == MATCH_NO) | |
226 | goto syntax; | |
227 | ||
228 | tail = gfc_get_data_variable (); | |
229 | *tail = var; | |
230 | ||
231 | parent->list = tail; | |
232 | ||
233 | for (;;) | |
234 | { | |
235 | if (gfc_match_char (',') != MATCH_YES) | |
236 | goto syntax; | |
237 | ||
238 | m = gfc_match_iterator (&parent->iter, 1); | |
239 | if (m == MATCH_YES) | |
240 | break; | |
241 | if (m == MATCH_ERROR) | |
242 | return MATCH_ERROR; | |
243 | ||
244 | m = var_element (&var); | |
245 | if (m == MATCH_ERROR) | |
246 | return MATCH_ERROR; | |
247 | if (m == MATCH_NO) | |
248 | goto syntax; | |
249 | ||
250 | tail->next = gfc_get_data_variable (); | |
251 | tail = tail->next; | |
252 | ||
253 | *tail = var; | |
254 | } | |
255 | ||
256 | if (gfc_match_char (')') != MATCH_YES) | |
257 | goto syntax; | |
258 | return MATCH_YES; | |
259 | ||
260 | syntax: | |
261 | gfc_syntax_error (ST_DATA); | |
262 | return MATCH_ERROR; | |
263 | } | |
264 | ||
265 | ||
266 | /* Match a single element in a data variable list, which can be a | |
267 | variable-iterator list. */ | |
268 | ||
269 | static match | |
c1977dbe | 270 | var_element (gfc_data_variable *new_var) |
b4f45d02 | 271 | { |
272 | match m; | |
273 | gfc_symbol *sym; | |
274 | ||
c1977dbe | 275 | memset (new_var, 0, sizeof (gfc_data_variable)); |
b4f45d02 | 276 | |
277 | if (gfc_match_char ('(') == MATCH_YES) | |
c1977dbe | 278 | return var_list (new_var); |
b4f45d02 | 279 | |
c1977dbe | 280 | m = gfc_match_variable (&new_var->expr, 0); |
b4f45d02 | 281 | if (m != MATCH_YES) |
282 | return m; | |
283 | ||
3e6f2100 | 284 | if (new_var->expr->expr_type == EXPR_CONSTANT |
285 | && new_var->expr->symtree == NULL) | |
286 | { | |
287 | gfc_error ("Inquiry parameter cannot appear in a " | |
288 | "data-stmt-object-list at %C"); | |
289 | return MATCH_ERROR; | |
290 | } | |
291 | ||
c1977dbe | 292 | sym = new_var->expr->symtree->n.sym; |
b4f45d02 | 293 | |
40de255b | 294 | /* Symbol should already have an associated type. */ |
60e19868 | 295 | if (!gfc_check_symbol_typed (sym, gfc_current_ns, false, gfc_current_locus)) |
40de255b | 296 | return MATCH_ERROR; |
297 | ||
1a9745d2 | 298 | if (!sym->attr.function && gfc_current_ns->parent |
299 | && gfc_current_ns->parent == sym->ns) | |
b4f45d02 | 300 | { |
716da296 | 301 | gfc_error ("Host associated variable %qs may not be in the DATA " |
7698a624 | 302 | "statement at %C", sym->name); |
b4f45d02 | 303 | return MATCH_ERROR; |
304 | } | |
305 | ||
c8df3e9c | 306 | if (gfc_current_state () != COMP_BLOCK_DATA |
1a9745d2 | 307 | && sym->attr.in_common |
60e19868 | 308 | && !gfc_notify_std (GFC_STD_GNU, "initialization of " |
0d2b3c9c | 309 | "common block variable %qs in DATA statement at %C", |
60e19868 | 310 | sym->name)) |
c8df3e9c | 311 | return MATCH_ERROR; |
b4f45d02 | 312 | |
60e19868 | 313 | if (!gfc_add_data (&sym->attr, sym->name, &new_var->expr->where)) |
b4f45d02 | 314 | return MATCH_ERROR; |
315 | ||
316 | return MATCH_YES; | |
317 | } | |
318 | ||
319 | ||
320 | /* Match the top-level list of data variables. */ | |
321 | ||
322 | static match | |
1a9745d2 | 323 | top_var_list (gfc_data *d) |
b4f45d02 | 324 | { |
c1977dbe | 325 | gfc_data_variable var, *tail, *new_var; |
b4f45d02 | 326 | match m; |
327 | ||
328 | tail = NULL; | |
329 | ||
330 | for (;;) | |
331 | { | |
332 | m = var_element (&var); | |
333 | if (m == MATCH_NO) | |
334 | goto syntax; | |
335 | if (m == MATCH_ERROR) | |
336 | return MATCH_ERROR; | |
337 | ||
c1977dbe | 338 | new_var = gfc_get_data_variable (); |
339 | *new_var = var; | |
b4f45d02 | 340 | |
341 | if (tail == NULL) | |
c1977dbe | 342 | d->var = new_var; |
b4f45d02 | 343 | else |
c1977dbe | 344 | tail->next = new_var; |
b4f45d02 | 345 | |
c1977dbe | 346 | tail = new_var; |
b4f45d02 | 347 | |
348 | if (gfc_match_char ('/') == MATCH_YES) | |
349 | break; | |
350 | if (gfc_match_char (',') != MATCH_YES) | |
351 | goto syntax; | |
352 | } | |
353 | ||
354 | return MATCH_YES; | |
355 | ||
356 | syntax: | |
357 | gfc_syntax_error (ST_DATA); | |
af29c1f0 | 358 | gfc_free_data_all (gfc_current_ns); |
b4f45d02 | 359 | return MATCH_ERROR; |
360 | } | |
361 | ||
362 | ||
363 | static match | |
1a9745d2 | 364 | match_data_constant (gfc_expr **result) |
b4f45d02 | 365 | { |
366 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c2958b6b | 367 | gfc_symbol *sym, *dt_sym = NULL; |
b4f45d02 | 368 | gfc_expr *expr; |
369 | match m; | |
096d4ad9 | 370 | locus old_loc; |
b4f45d02 | 371 | |
372 | m = gfc_match_literal_constant (&expr, 1); | |
373 | if (m == MATCH_YES) | |
374 | { | |
375 | *result = expr; | |
376 | return MATCH_YES; | |
377 | } | |
378 | ||
379 | if (m == MATCH_ERROR) | |
380 | return MATCH_ERROR; | |
381 | ||
382 | m = gfc_match_null (result); | |
383 | if (m != MATCH_NO) | |
384 | return m; | |
385 | ||
096d4ad9 | 386 | old_loc = gfc_current_locus; |
387 | ||
388 | /* Should this be a structure component, try to match it | |
389 | before matching a name. */ | |
390 | m = gfc_match_rvalue (result); | |
391 | if (m == MATCH_ERROR) | |
392 | return m; | |
393 | ||
394 | if (m == MATCH_YES && (*result)->expr_type == EXPR_STRUCTURE) | |
395 | { | |
60e19868 | 396 | if (!gfc_simplify_expr (*result, 0)) |
096d4ad9 | 397 | m = MATCH_ERROR; |
398 | return m; | |
399 | } | |
021ff494 | 400 | else if (m == MATCH_YES) |
a8289010 | 401 | { |
402 | /* F2018:R845 data-stmt-constant is initial-data-target. | |
403 | A data-stmt-constant shall be ... initial-data-target if and | |
404 | only if the corresponding data-stmt-object has the POINTER | |
405 | attribute. ... If data-stmt-constant is initial-data-target | |
406 | the corresponding data statement object shall be | |
407 | data-pointer-initialization compatible (7.5.4.6) with the initial | |
408 | data target; the data statement object is initially associated | |
409 | with the target. */ | |
410 | if ((*result)->symtree->n.sym->attr.save | |
411 | && (*result)->symtree->n.sym->attr.target) | |
412 | return m; | |
413 | gfc_free_expr (*result); | |
414 | } | |
096d4ad9 | 415 | |
416 | gfc_current_locus = old_loc; | |
417 | ||
b4f45d02 | 418 | m = gfc_match_name (name); |
419 | if (m != MATCH_YES) | |
420 | return m; | |
421 | ||
422 | if (gfc_find_symbol (name, NULL, 1, &sym)) | |
423 | return MATCH_ERROR; | |
424 | ||
c2958b6b | 425 | if (sym && sym->attr.generic) |
426 | dt_sym = gfc_find_dt_in_generic (sym); | |
427 | ||
b4f45d02 | 428 | if (sym == NULL |
c2958b6b | 429 | || (sym->attr.flavor != FL_PARAMETER |
d7cd448a | 430 | && (!dt_sym || !gfc_fl_struct (dt_sym->attr.flavor)))) |
b4f45d02 | 431 | { |
716da296 | 432 | gfc_error ("Symbol %qs must be a PARAMETER in DATA statement at %C", |
b4f45d02 | 433 | name); |
fb5574d7 | 434 | *result = NULL; |
b4f45d02 | 435 | return MATCH_ERROR; |
436 | } | |
d7cd448a | 437 | else if (dt_sym && gfc_fl_struct (dt_sym->attr.flavor)) |
c2958b6b | 438 | return gfc_match_structure_constructor (dt_sym, result); |
b4f45d02 | 439 | |
f0a51891 | 440 | /* Check to see if the value is an initialization array expression. */ |
441 | if (sym->value->expr_type == EXPR_ARRAY) | |
442 | { | |
443 | gfc_current_locus = old_loc; | |
444 | ||
445 | m = gfc_match_init_expr (result); | |
446 | if (m == MATCH_ERROR) | |
447 | return m; | |
448 | ||
449 | if (m == MATCH_YES) | |
450 | { | |
60e19868 | 451 | if (!gfc_simplify_expr (*result, 0)) |
f0a51891 | 452 | m = MATCH_ERROR; |
453 | ||
454 | if ((*result)->expr_type == EXPR_CONSTANT) | |
455 | return m; | |
456 | else | |
457 | { | |
458 | gfc_error ("Invalid initializer %s in Data statement at %C", name); | |
459 | return MATCH_ERROR; | |
460 | } | |
461 | } | |
462 | } | |
463 | ||
b4f45d02 | 464 | *result = gfc_copy_expr (sym->value); |
465 | return MATCH_YES; | |
466 | } | |
467 | ||
468 | ||
469 | /* Match a list of values in a DATA statement. The leading '/' has | |
470 | already been seen at this point. */ | |
471 | ||
472 | static match | |
1a9745d2 | 473 | top_val_list (gfc_data *data) |
b4f45d02 | 474 | { |
c1977dbe | 475 | gfc_data_value *new_val, *tail; |
b4f45d02 | 476 | gfc_expr *expr; |
b4f45d02 | 477 | match m; |
478 | ||
479 | tail = NULL; | |
480 | ||
481 | for (;;) | |
482 | { | |
483 | m = match_data_constant (&expr); | |
484 | if (m == MATCH_NO) | |
485 | goto syntax; | |
486 | if (m == MATCH_ERROR) | |
487 | return MATCH_ERROR; | |
488 | ||
c1977dbe | 489 | new_val = gfc_get_data_value (); |
490 | mpz_init (new_val->repeat); | |
b4f45d02 | 491 | |
492 | if (tail == NULL) | |
c1977dbe | 493 | data->value = new_val; |
b4f45d02 | 494 | else |
c1977dbe | 495 | tail->next = new_val; |
b4f45d02 | 496 | |
c1977dbe | 497 | tail = new_val; |
b4f45d02 | 498 | |
499 | if (expr->ts.type != BT_INTEGER || gfc_match_char ('*') != MATCH_YES) | |
500 | { | |
501 | tail->expr = expr; | |
7d74abfd | 502 | mpz_set_ui (tail->repeat, 1); |
b4f45d02 | 503 | } |
504 | else | |
505 | { | |
021ff494 | 506 | mpz_set (tail->repeat, expr->value.integer); |
b4f45d02 | 507 | gfc_free_expr (expr); |
b4f45d02 | 508 | |
509 | m = match_data_constant (&tail->expr); | |
510 | if (m == MATCH_NO) | |
511 | goto syntax; | |
512 | if (m == MATCH_ERROR) | |
513 | return MATCH_ERROR; | |
514 | } | |
515 | ||
516 | if (gfc_match_char ('/') == MATCH_YES) | |
517 | break; | |
518 | if (gfc_match_char (',') == MATCH_NO) | |
519 | goto syntax; | |
520 | } | |
521 | ||
522 | return MATCH_YES; | |
523 | ||
524 | syntax: | |
525 | gfc_syntax_error (ST_DATA); | |
af29c1f0 | 526 | gfc_free_data_all (gfc_current_ns); |
b4f45d02 | 527 | return MATCH_ERROR; |
528 | } | |
529 | ||
530 | ||
531 | /* Matches an old style initialization. */ | |
532 | ||
533 | static match | |
534 | match_old_style_init (const char *name) | |
535 | { | |
536 | match m; | |
537 | gfc_symtree *st; | |
344b937e | 538 | gfc_symbol *sym; |
b4f45d02 | 539 | gfc_data *newdata; |
540 | ||
541 | /* Set up data structure to hold initializers. */ | |
542 | gfc_find_sym_tree (name, NULL, 0, &st); | |
344b937e | 543 | sym = st->n.sym; |
544 | ||
b4f45d02 | 545 | newdata = gfc_get_data (); |
546 | newdata->var = gfc_get_data_variable (); | |
547 | newdata->var->expr = gfc_get_variable_expr (st); | |
d9c759d9 | 548 | newdata->var->expr->where = sym->declared_at; |
5aed5db3 | 549 | newdata->where = gfc_current_locus; |
b4f45d02 | 550 | |
f6d0e37a | 551 | /* Match initial value list. This also eats the terminal '/'. */ |
b4f45d02 | 552 | m = top_val_list (newdata); |
553 | if (m != MATCH_YES) | |
554 | { | |
434f0922 | 555 | free (newdata); |
b4f45d02 | 556 | return m; |
557 | } | |
558 | ||
559 | if (gfc_pure (NULL)) | |
560 | { | |
561 | gfc_error ("Initialization at %C is not allowed in a PURE procedure"); | |
434f0922 | 562 | free (newdata); |
b4f45d02 | 563 | return MATCH_ERROR; |
564 | } | |
c77badf3 | 565 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
8b0a2e85 | 566 | |
344b937e | 567 | /* Mark the variable as having appeared in a data statement. */ |
60e19868 | 568 | if (!gfc_add_data (&sym->attr, sym->name, &sym->declared_at)) |
344b937e | 569 | { |
434f0922 | 570 | free (newdata); |
344b937e | 571 | return MATCH_ERROR; |
572 | } | |
573 | ||
b4f45d02 | 574 | /* Chain in namespace list of DATA initializers. */ |
575 | newdata->next = gfc_current_ns->data; | |
576 | gfc_current_ns->data = newdata; | |
577 | ||
578 | return m; | |
579 | } | |
580 | ||
1a9745d2 | 581 | |
b4f45d02 | 582 | /* Match the stuff following a DATA statement. If ERROR_FLAG is set, |
39fca56b | 583 | we are matching a DATA statement and are therefore issuing an error |
e14bee04 | 584 | if we encounter something unexpected, if not, we're trying to match |
fe06c0d5 | 585 | an old-style initialization expression of the form INTEGER I /2/. */ |
b4f45d02 | 586 | |
587 | match | |
588 | gfc_match_data (void) | |
589 | { | |
c1977dbe | 590 | gfc_data *new_data; |
b4f45d02 | 591 | match m; |
592 | ||
c286c294 | 593 | /* Before parsing the rest of a DATA statement, check F2008:c1206. */ |
594 | if ((gfc_current_state () == COMP_FUNCTION | |
595 | || gfc_current_state () == COMP_SUBROUTINE) | |
596 | && gfc_state_stack->previous->state == COMP_INTERFACE) | |
597 | { | |
598 | gfc_error ("DATA statement at %C cannot appear within an INTERFACE"); | |
599 | return MATCH_ERROR; | |
600 | } | |
601 | ||
cbbac028 | 602 | set_in_match_data (true); |
1bfea7e8 | 603 | |
b4f45d02 | 604 | for (;;) |
605 | { | |
c1977dbe | 606 | new_data = gfc_get_data (); |
607 | new_data->where = gfc_current_locus; | |
b4f45d02 | 608 | |
c1977dbe | 609 | m = top_var_list (new_data); |
b4f45d02 | 610 | if (m != MATCH_YES) |
611 | goto cleanup; | |
612 | ||
10e78772 | 613 | if (new_data->var->iter.var |
614 | && new_data->var->iter.var->ts.type == BT_INTEGER | |
615 | && new_data->var->iter.var->symtree->n.sym->attr.implied_index == 1 | |
616 | && new_data->var->list | |
617 | && new_data->var->list->expr | |
618 | && new_data->var->list->expr->ts.type == BT_CHARACTER | |
619 | && new_data->var->list->expr->ref | |
620 | && new_data->var->list->expr->ref->type == REF_SUBSTRING) | |
621 | { | |
622 | gfc_error ("Invalid substring in data-implied-do at %L in DATA " | |
623 | "statement", &new_data->var->list->expr->where); | |
624 | goto cleanup; | |
625 | } | |
626 | ||
c1977dbe | 627 | m = top_val_list (new_data); |
b4f45d02 | 628 | if (m != MATCH_YES) |
629 | goto cleanup; | |
630 | ||
c1977dbe | 631 | new_data->next = gfc_current_ns->data; |
632 | gfc_current_ns->data = new_data; | |
b4f45d02 | 633 | |
634 | if (gfc_match_eos () == MATCH_YES) | |
635 | break; | |
636 | ||
637 | gfc_match_char (','); /* Optional comma */ | |
638 | } | |
639 | ||
cbbac028 | 640 | set_in_match_data (false); |
1bfea7e8 | 641 | |
b4f45d02 | 642 | if (gfc_pure (NULL)) |
643 | { | |
644 | gfc_error ("DATA statement at %C is not allowed in a PURE procedure"); | |
645 | return MATCH_ERROR; | |
646 | } | |
c77badf3 | 647 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
8b0a2e85 | 648 | |
b4f45d02 | 649 | return MATCH_YES; |
650 | ||
651 | cleanup: | |
cbbac028 | 652 | set_in_match_data (false); |
c1977dbe | 653 | gfc_free_data (new_data); |
b4f45d02 | 654 | return MATCH_ERROR; |
655 | } | |
656 | ||
657 | ||
658 | /************************ Declaration statements *********************/ | |
659 | ||
e97ac7c0 | 660 | |
d7cd448a | 661 | /* Like gfc_match_init_expr, but matches a 'clist' (old-style initialization |
662 | list). The difference here is the expression is a list of constants | |
7d7125df | 663 | and is surrounded by '/'. |
d7cd448a | 664 | The typespec ts must match the typespec of the variable which the |
665 | clist is initializing. | |
7d7125df | 666 | The arrayspec tells whether this should match a list of constants |
d7cd448a | 667 | corresponding to array elements or a scalar (as == NULL). */ |
668 | ||
669 | static match | |
670 | match_clist_expr (gfc_expr **result, gfc_typespec *ts, gfc_array_spec *as) | |
671 | { | |
672 | gfc_constructor_base array_head = NULL; | |
673 | gfc_expr *expr = NULL; | |
d9c759d9 | 674 | match m = MATCH_ERROR; |
d7cd448a | 675 | locus where; |
f1e4e020 | 676 | mpz_t repeat, cons_size, as_size; |
d7cd448a | 677 | bool scalar; |
678 | int cmp; | |
679 | ||
680 | gcc_assert (ts); | |
681 | ||
d7cd448a | 682 | /* We have already matched '/' - now look for a constant list, as with |
683 | top_val_list from decl.c, but append the result to an array. */ | |
684 | if (gfc_match ("/") == MATCH_YES) | |
685 | { | |
686 | gfc_error ("Empty old style initializer list at %C"); | |
d9c759d9 | 687 | return MATCH_ERROR; |
d7cd448a | 688 | } |
689 | ||
690 | where = gfc_current_locus; | |
d9c759d9 | 691 | scalar = !as || !as->rank; |
692 | ||
693 | if (!scalar && !spec_size (as, &as_size)) | |
694 | { | |
695 | gfc_error ("Array in initializer list at %L must have an explicit shape", | |
696 | as->type == AS_EXPLICIT ? &as->upper[0]->where : &where); | |
697 | /* Nothing to cleanup yet. */ | |
698 | return MATCH_ERROR; | |
699 | } | |
700 | ||
701 | mpz_init_set_ui (repeat, 0); | |
702 | ||
d7cd448a | 703 | for (;;) |
704 | { | |
705 | m = match_data_constant (&expr); | |
706 | if (m != MATCH_YES) | |
707 | expr = NULL; /* match_data_constant may set expr to garbage */ | |
708 | if (m == MATCH_NO) | |
709 | goto syntax; | |
710 | if (m == MATCH_ERROR) | |
711 | goto cleanup; | |
712 | ||
713 | /* Found r in repeat spec r*c; look for the constant to repeat. */ | |
714 | if ( gfc_match_char ('*') == MATCH_YES) | |
715 | { | |
716 | if (scalar) | |
717 | { | |
718 | gfc_error ("Repeat spec invalid in scalar initializer at %C"); | |
719 | goto cleanup; | |
720 | } | |
721 | if (expr->ts.type != BT_INTEGER) | |
722 | { | |
723 | gfc_error ("Repeat spec must be an integer at %C"); | |
724 | goto cleanup; | |
725 | } | |
726 | mpz_set (repeat, expr->value.integer); | |
727 | gfc_free_expr (expr); | |
728 | expr = NULL; | |
729 | ||
730 | m = match_data_constant (&expr); | |
731 | if (m == MATCH_NO) | |
d9c759d9 | 732 | { |
733 | m = MATCH_ERROR; | |
734 | gfc_error ("Expected data constant after repeat spec at %C"); | |
735 | } | |
d7cd448a | 736 | if (m != MATCH_YES) |
737 | goto cleanup; | |
738 | } | |
739 | /* No repeat spec, we matched the data constant itself. */ | |
740 | else | |
741 | mpz_set_ui (repeat, 1); | |
742 | ||
743 | if (!scalar) | |
744 | { | |
745 | /* Add the constant initializer as many times as repeated. */ | |
746 | for (; mpz_cmp_ui (repeat, 0) > 0; mpz_sub_ui (repeat, repeat, 1)) | |
747 | { | |
748 | /* Make sure types of elements match */ | |
749 | if(ts && !gfc_compare_types (&expr->ts, ts) | |
750 | && !gfc_convert_type (expr, ts, 1)) | |
751 | goto cleanup; | |
752 | ||
753 | gfc_constructor_append_expr (&array_head, | |
754 | gfc_copy_expr (expr), &gfc_current_locus); | |
755 | } | |
756 | ||
757 | gfc_free_expr (expr); | |
758 | expr = NULL; | |
759 | } | |
760 | ||
761 | /* For scalar initializers quit after one element. */ | |
762 | else | |
763 | { | |
764 | if(gfc_match_char ('/') != MATCH_YES) | |
765 | { | |
766 | gfc_error ("End of scalar initializer expected at %C"); | |
767 | goto cleanup; | |
768 | } | |
769 | break; | |
770 | } | |
771 | ||
772 | if (gfc_match_char ('/') == MATCH_YES) | |
773 | break; | |
774 | if (gfc_match_char (',') == MATCH_NO) | |
775 | goto syntax; | |
776 | } | |
777 | ||
d9c759d9 | 778 | /* If we break early from here out, we encountered an error. */ |
779 | m = MATCH_ERROR; | |
780 | ||
d7cd448a | 781 | /* Set up expr as an array constructor. */ |
782 | if (!scalar) | |
783 | { | |
784 | expr = gfc_get_array_expr (ts->type, ts->kind, &where); | |
785 | expr->ts = *ts; | |
786 | expr->value.constructor = array_head; | |
787 | ||
788 | expr->rank = as->rank; | |
789 | expr->shape = gfc_get_shape (expr->rank); | |
790 | ||
f1e4e020 | 791 | /* Validate sizes. We built expr ourselves, so cons_size will be |
792 | constant (we fail above for non-constant expressions). | |
d9c759d9 | 793 | We still need to verify that the sizes match. */ |
f1e4e020 | 794 | gcc_assert (gfc_array_size (expr, &cons_size)); |
d9c759d9 | 795 | cmp = mpz_cmp (cons_size, as_size); |
796 | if (cmp < 0) | |
797 | gfc_error ("Not enough elements in array initializer at %C"); | |
798 | else if (cmp > 0) | |
799 | gfc_error ("Too many elements in array initializer at %C"); | |
f1e4e020 | 800 | mpz_clear (cons_size); |
d7cd448a | 801 | if (cmp) |
f1e4e020 | 802 | goto cleanup; |
d7cd448a | 803 | } |
804 | ||
805 | /* Make sure scalar types match. */ | |
806 | else if (!gfc_compare_types (&expr->ts, ts) | |
807 | && !gfc_convert_type (expr, ts, 1)) | |
808 | goto cleanup; | |
809 | ||
810 | if (expr->ts.u.cl) | |
811 | expr->ts.u.cl->length_from_typespec = 1; | |
812 | ||
813 | *result = expr; | |
d9c759d9 | 814 | m = MATCH_YES; |
815 | goto done; | |
d7cd448a | 816 | |
817 | syntax: | |
d9c759d9 | 818 | m = MATCH_ERROR; |
d7cd448a | 819 | gfc_error ("Syntax error in old style initializer list at %C"); |
820 | ||
821 | cleanup: | |
822 | if (expr) | |
823 | expr->value.constructor = NULL; | |
824 | gfc_free_expr (expr); | |
825 | gfc_constructor_free (array_head); | |
d9c759d9 | 826 | |
827 | done: | |
d7cd448a | 828 | mpz_clear (repeat); |
d9c759d9 | 829 | if (!scalar) |
830 | mpz_clear (as_size); | |
831 | return m; | |
d7cd448a | 832 | } |
833 | ||
834 | ||
df084314 | 835 | /* Auxiliary function to merge DIMENSION and CODIMENSION array specs. */ |
e97ac7c0 | 836 | |
60e19868 | 837 | static bool |
e97ac7c0 | 838 | merge_array_spec (gfc_array_spec *from, gfc_array_spec *to, bool copy) |
839 | { | |
a83e9b8b | 840 | int i, j; |
e97ac7c0 | 841 | |
9b58b4c7 | 842 | if ((from->type == AS_ASSUMED_RANK && to->corank) |
843 | || (to->type == AS_ASSUMED_RANK && from->corank)) | |
844 | { | |
845 | gfc_error ("The assumed-rank array at %C shall not have a codimension"); | |
60e19868 | 846 | return false; |
9b58b4c7 | 847 | } |
f00f6dd6 | 848 | |
e97ac7c0 | 849 | if (to->rank == 0 && from->rank > 0) |
850 | { | |
851 | to->rank = from->rank; | |
852 | to->type = from->type; | |
853 | to->cray_pointee = from->cray_pointee; | |
854 | to->cp_was_assumed = from->cp_was_assumed; | |
855 | ||
856 | for (i = 0; i < to->corank; i++) | |
857 | { | |
a83e9b8b | 858 | /* Do not exceed the limits on lower[] and upper[]. gfortran |
859 | cleans up elsewhere. */ | |
860 | j = from->rank + i; | |
861 | if (j >= GFC_MAX_DIMENSIONS) | |
862 | break; | |
863 | ||
864 | to->lower[j] = to->lower[i]; | |
865 | to->upper[j] = to->upper[i]; | |
e97ac7c0 | 866 | } |
867 | for (i = 0; i < from->rank; i++) | |
868 | { | |
869 | if (copy) | |
870 | { | |
871 | to->lower[i] = gfc_copy_expr (from->lower[i]); | |
872 | to->upper[i] = gfc_copy_expr (from->upper[i]); | |
873 | } | |
874 | else | |
875 | { | |
876 | to->lower[i] = from->lower[i]; | |
877 | to->upper[i] = from->upper[i]; | |
878 | } | |
879 | } | |
880 | } | |
881 | else if (to->corank == 0 && from->corank > 0) | |
882 | { | |
883 | to->corank = from->corank; | |
884 | to->cotype = from->cotype; | |
885 | ||
886 | for (i = 0; i < from->corank; i++) | |
887 | { | |
a83e9b8b | 888 | /* Do not exceed the limits on lower[] and upper[]. gfortran |
889 | cleans up elsewhere. */ | |
890 | j = to->rank + i; | |
891 | if (j >= GFC_MAX_DIMENSIONS) | |
892 | break; | |
893 | ||
e97ac7c0 | 894 | if (copy) |
895 | { | |
a83e9b8b | 896 | to->lower[j] = gfc_copy_expr (from->lower[i]); |
897 | to->upper[j] = gfc_copy_expr (from->upper[i]); | |
e97ac7c0 | 898 | } |
899 | else | |
900 | { | |
a83e9b8b | 901 | to->lower[j] = from->lower[i]; |
902 | to->upper[j] = from->upper[i]; | |
e97ac7c0 | 903 | } |
904 | } | |
905 | } | |
9b58b4c7 | 906 | |
ca5fc2b6 | 907 | if (to->rank + to->corank > GFC_MAX_DIMENSIONS) |
a83e9b8b | 908 | { |
909 | gfc_error ("Sum of array rank %d and corank %d at %C exceeds maximum " | |
910 | "allowed dimensions of %d", | |
911 | to->rank, to->corank, GFC_MAX_DIMENSIONS); | |
912 | to->corank = GFC_MAX_DIMENSIONS - to->rank; | |
913 | return false; | |
914 | } | |
60e19868 | 915 | return true; |
e97ac7c0 | 916 | } |
917 | ||
918 | ||
4ee9c684 | 919 | /* Match an intent specification. Since this can only happen after an |
920 | INTENT word, a legal intent-spec must follow. */ | |
921 | ||
922 | static sym_intent | |
923 | match_intent_spec (void) | |
924 | { | |
925 | ||
926 | if (gfc_match (" ( in out )") == MATCH_YES) | |
927 | return INTENT_INOUT; | |
928 | if (gfc_match (" ( in )") == MATCH_YES) | |
929 | return INTENT_IN; | |
930 | if (gfc_match (" ( out )") == MATCH_YES) | |
931 | return INTENT_OUT; | |
932 | ||
933 | gfc_error ("Bad INTENT specification at %C"); | |
934 | return INTENT_UNKNOWN; | |
935 | } | |
936 | ||
937 | ||
938 | /* Matches a character length specification, which is either a | |
3e715c81 | 939 | specification expression, '*', or ':'. */ |
4ee9c684 | 940 | |
941 | static match | |
3e715c81 | 942 | char_len_param_value (gfc_expr **expr, bool *deferred) |
4ee9c684 | 943 | { |
294d58d3 | 944 | match m; |
945 | ||
3e715c81 | 946 | *expr = NULL; |
947 | *deferred = false; | |
948 | ||
4ee9c684 | 949 | if (gfc_match_char ('*') == MATCH_YES) |
3e715c81 | 950 | return MATCH_YES; |
951 | ||
952 | if (gfc_match_char (':') == MATCH_YES) | |
4ee9c684 | 953 | { |
34bf7ba5 | 954 | if (!gfc_notify_std (GFC_STD_F2003, "deferred type parameter at %C")) |
3e715c81 | 955 | return MATCH_ERROR; |
956 | ||
957 | *deferred = true; | |
958 | ||
4ee9c684 | 959 | return MATCH_YES; |
960 | } | |
961 | ||
294d58d3 | 962 | m = gfc_match_expr (expr); |
40de255b | 963 | |
34bf7ba5 | 964 | if (m == MATCH_NO || m == MATCH_ERROR) |
965 | return m; | |
966 | ||
967 | if (!gfc_expr_check_typed (*expr, gfc_current_ns, false)) | |
40de255b | 968 | return MATCH_ERROR; |
969 | ||
34bf7ba5 | 970 | if ((*expr)->expr_type == EXPR_FUNCTION) |
294d58d3 | 971 | { |
9c5a8acc | 972 | if ((*expr)->ts.type == BT_INTEGER |
973 | || ((*expr)->ts.type == BT_UNKNOWN | |
974 | && strcmp((*expr)->symtree->name, "null") != 0)) | |
975 | return MATCH_YES; | |
976 | ||
977 | goto syntax; | |
978 | } | |
979 | else if ((*expr)->expr_type == EXPR_CONSTANT) | |
980 | { | |
981 | /* F2008, 4.4.3.1: The length is a type parameter; its kind is | |
982 | processor dependent and its value is greater than or equal to zero. | |
983 | F2008, 4.4.3.2: If the character length parameter value evaluates | |
984 | to a negative value, the length of character entities declared | |
985 | is zero. */ | |
986 | ||
987 | if ((*expr)->ts.type == BT_INTEGER) | |
294d58d3 | 988 | { |
9c5a8acc | 989 | if (mpz_cmp_si ((*expr)->value.integer, 0) < 0) |
990 | mpz_set_si ((*expr)->value.integer, 0); | |
294d58d3 | 991 | } |
9c5a8acc | 992 | else |
993 | goto syntax; | |
294d58d3 | 994 | } |
9c5a8acc | 995 | else if ((*expr)->expr_type == EXPR_ARRAY) |
996 | goto syntax; | |
997 | else if ((*expr)->expr_type == EXPR_VARIABLE) | |
998 | { | |
165b422e | 999 | bool t; |
9c5a8acc | 1000 | gfc_expr *e; |
1001 | ||
1002 | e = gfc_copy_expr (*expr); | |
1003 | ||
1004 | /* This catches the invalid code "[character(m(2:3)) :: 'x', 'y']", | |
1005 | which causes an ICE if gfc_reduce_init_expr() is called. */ | |
47977082 | 1006 | if (e->ref && e->ref->type == REF_ARRAY |
1007 | && e->ref->u.ar.type == AR_UNKNOWN | |
9c5a8acc | 1008 | && e->ref->u.ar.dimen_type[0] == DIMEN_RANGE) |
1009 | goto syntax; | |
1010 | ||
165b422e | 1011 | t = gfc_reduce_init_expr (e); |
1012 | ||
42f172d0 | 1013 | if (!t && e->ts.type == BT_UNKNOWN |
1014 | && e->symtree->n.sym->attr.untyped == 1 | |
a246a22d | 1015 | && (flag_implicit_none |
1016 | || e->symtree->n.sym->ns->seen_implicit_none == 1 | |
42f172d0 | 1017 | || e->symtree->n.sym->ns->parent->seen_implicit_none == 1)) |
165b422e | 1018 | { |
1019 | gfc_free_expr (e); | |
1020 | goto syntax; | |
1021 | } | |
34bf7ba5 | 1022 | |
47977082 | 1023 | if ((e->ref && e->ref->type == REF_ARRAY |
76e207a9 | 1024 | && e->ref->u.ar.type != AR_ELEMENT) |
9c5a8acc | 1025 | || (!e->ref && e->expr_type == EXPR_ARRAY)) |
1026 | { | |
1027 | gfc_free_expr (e); | |
1028 | goto syntax; | |
1029 | } | |
1030 | ||
1031 | gfc_free_expr (e); | |
1032 | } | |
34bf7ba5 | 1033 | |
294d58d3 | 1034 | return m; |
1035 | ||
1036 | syntax: | |
9c5a8acc | 1037 | gfc_error ("Scalar INTEGER expression expected at %L", &(*expr)->where); |
294d58d3 | 1038 | return MATCH_ERROR; |
4ee9c684 | 1039 | } |
1040 | ||
1041 | ||
1042 | /* A character length is a '*' followed by a literal integer or a | |
1043 | char_len_param_value in parenthesis. */ | |
1044 | ||
1045 | static match | |
ae0426ce | 1046 | match_char_length (gfc_expr **expr, bool *deferred, bool obsolescent_check) |
4ee9c684 | 1047 | { |
3bd3b616 | 1048 | int length; |
4ee9c684 | 1049 | match m; |
1050 | ||
8db94b3b | 1051 | *deferred = false; |
4ee9c684 | 1052 | m = gfc_match_char ('*'); |
1053 | if (m != MATCH_YES) | |
1054 | return m; | |
1055 | ||
3bd3b616 | 1056 | m = gfc_match_small_literal_int (&length, NULL); |
4ee9c684 | 1057 | if (m == MATCH_ERROR) |
1058 | return m; | |
1059 | ||
1060 | if (m == MATCH_YES) | |
1061 | { | |
ae0426ce | 1062 | if (obsolescent_check |
60e19868 | 1063 | && !gfc_notify_std (GFC_STD_F95_OBS, "Old-style character length at %C")) |
8e9b41f0 | 1064 | return MATCH_ERROR; |
9f4d9f83 | 1065 | *expr = gfc_get_int_expr (gfc_charlen_int_kind, NULL, length); |
4ee9c684 | 1066 | return m; |
1067 | } | |
1068 | ||
1069 | if (gfc_match_char ('(') == MATCH_NO) | |
1070 | goto syntax; | |
1071 | ||
3e715c81 | 1072 | m = char_len_param_value (expr, deferred); |
077932f9 | 1073 | if (m != MATCH_YES && gfc_matching_function) |
1074 | { | |
1075 | gfc_undo_symbols (); | |
1076 | m = MATCH_YES; | |
1077 | } | |
1078 | ||
4ee9c684 | 1079 | if (m == MATCH_ERROR) |
1080 | return m; | |
1081 | if (m == MATCH_NO) | |
1082 | goto syntax; | |
1083 | ||
1084 | if (gfc_match_char (')') == MATCH_NO) | |
1085 | { | |
1086 | gfc_free_expr (*expr); | |
1087 | *expr = NULL; | |
1088 | goto syntax; | |
1089 | } | |
1090 | ||
1091 | return MATCH_YES; | |
1092 | ||
1093 | syntax: | |
1094 | gfc_error ("Syntax error in character length specification at %C"); | |
1095 | return MATCH_ERROR; | |
1096 | } | |
1097 | ||
1098 | ||
ee893be6 | 1099 | /* Special subroutine for finding a symbol. Check if the name is found |
1100 | in the current name space. If not, and we're compiling a function or | |
1101 | subroutine and the parent compilation unit is an interface, then check | |
1102 | to see if the name we've been given is the name of the interface | |
1103 | (located in another namespace). */ | |
4ee9c684 | 1104 | |
1105 | static int | |
36b0a1b0 | 1106 | find_special (const char *name, gfc_symbol **result, bool allow_subroutine) |
4ee9c684 | 1107 | { |
1108 | gfc_state_data *s; | |
36b0a1b0 | 1109 | gfc_symtree *st; |
ee893be6 | 1110 | int i; |
4ee9c684 | 1111 | |
36b0a1b0 | 1112 | i = gfc_get_sym_tree (name, NULL, &st, allow_subroutine); |
e14bee04 | 1113 | if (i == 0) |
36b0a1b0 | 1114 | { |
1115 | *result = st ? st->n.sym : NULL; | |
1116 | goto end; | |
1117 | } | |
e14bee04 | 1118 | |
4ee9c684 | 1119 | if (gfc_current_state () != COMP_SUBROUTINE |
1120 | && gfc_current_state () != COMP_FUNCTION) | |
ee893be6 | 1121 | goto end; |
4ee9c684 | 1122 | |
1123 | s = gfc_state_stack->previous; | |
1124 | if (s == NULL) | |
ee893be6 | 1125 | goto end; |
4ee9c684 | 1126 | |
1127 | if (s->state != COMP_INTERFACE) | |
ee893be6 | 1128 | goto end; |
4ee9c684 | 1129 | if (s->sym == NULL) |
f6d0e37a | 1130 | goto end; /* Nameless interface. */ |
4ee9c684 | 1131 | |
1132 | if (strcmp (name, s->sym->name) == 0) | |
1133 | { | |
1134 | *result = s->sym; | |
1135 | return 0; | |
1136 | } | |
1137 | ||
ee893be6 | 1138 | end: |
1139 | return i; | |
4ee9c684 | 1140 | } |
1141 | ||
1142 | ||
1143 | /* Special subroutine for getting a symbol node associated with a | |
1144 | procedure name, used in SUBROUTINE and FUNCTION statements. The | |
1145 | symbol is created in the parent using with symtree node in the | |
1146 | child unit pointing to the symbol. If the current namespace has no | |
1147 | parent, then the symbol is just created in the current unit. */ | |
1148 | ||
1149 | static int | |
1a9745d2 | 1150 | get_proc_name (const char *name, gfc_symbol **result, bool module_fcn_entry) |
4ee9c684 | 1151 | { |
1152 | gfc_symtree *st; | |
1153 | gfc_symbol *sym; | |
2ddb8ed9 | 1154 | int rc = 0; |
4ee9c684 | 1155 | |
d77f260f | 1156 | /* Module functions have to be left in their own namespace because |
1157 | they have potentially (almost certainly!) already been referenced. | |
1158 | In this sense, they are rather like external functions. This is | |
1159 | fixed up in resolve.c(resolve_entries), where the symbol name- | |
1160 | space is set to point to the master function, so that the fake | |
1161 | result mechanism can work. */ | |
1162 | if (module_fcn_entry) | |
861d824f | 1163 | { |
1164 | /* Present if entry is declared to be a module procedure. */ | |
1165 | rc = gfc_find_symbol (name, gfc_current_ns->parent, 0, result); | |
c6a05992 | 1166 | |
861d824f | 1167 | if (*result == NULL) |
1168 | rc = gfc_get_symbol (name, NULL, result); | |
a78f714d | 1169 | else if (!gfc_get_symbol (name, NULL, &sym) && sym |
c6a05992 | 1170 | && (*result)->ts.type == BT_UNKNOWN |
1171 | && sym->attr.flavor == FL_UNKNOWN) | |
1172 | /* Pick up the typespec for the entry, if declared in the function | |
1173 | body. Note that this symbol is FL_UNKNOWN because it will | |
1174 | only have appeared in a type declaration. The local symtree | |
1175 | is set to point to the module symbol and a unique symtree | |
1176 | to the local version. This latter ensures a correct clearing | |
1177 | of the symbols. */ | |
a78f714d | 1178 | { |
1179 | /* If the ENTRY proceeds its specification, we need to ensure | |
1180 | that this does not raise a "has no IMPLICIT type" error. */ | |
1181 | if (sym->ts.type == BT_UNKNOWN) | |
2168078b | 1182 | sym->attr.untyped = 1; |
a78f714d | 1183 | |
2168078b | 1184 | (*result)->ts = sym->ts; |
a78f714d | 1185 | |
1186 | /* Put the symbol in the procedure namespace so that, should | |
69b1505f | 1187 | the ENTRY precede its specification, the specification |
a78f714d | 1188 | can be applied. */ |
1189 | (*result)->ns = gfc_current_ns; | |
1190 | ||
1191 | gfc_find_sym_tree (name, gfc_current_ns, 0, &st); | |
1192 | st->n.sym = *result; | |
1193 | st = gfc_get_unique_symtree (gfc_current_ns); | |
c77c84dd | 1194 | sym->refs++; |
a78f714d | 1195 | st->n.sym = sym; |
1196 | } | |
861d824f | 1197 | } |
858f9894 | 1198 | else |
1199 | rc = gfc_get_symbol (name, gfc_current_ns->parent, result); | |
4ee9c684 | 1200 | |
2ddb8ed9 | 1201 | if (rc) |
1202 | return rc; | |
1203 | ||
858f9894 | 1204 | sym = *result; |
97323566 | 1205 | if (sym->attr.proc == PROC_ST_FUNCTION) |
1206 | return rc; | |
4ee9c684 | 1207 | |
b229bdf2 | 1208 | if (sym->attr.module_procedure && sym->attr.if_source == IFSRC_IFBODY) |
4b8eb6ca | 1209 | { |
1210 | /* Create a partially populated interface symbol to carry the | |
1211 | characteristics of the procedure and the result. */ | |
dee7f6d1 | 1212 | sym->tlink = gfc_new_symbol (name, sym->ns); |
b229bdf2 | 1213 | gfc_add_type (sym->tlink, &(sym->ts), &gfc_current_locus); |
dee7f6d1 | 1214 | gfc_copy_attr (&sym->tlink->attr, &sym->attr, NULL); |
4b8eb6ca | 1215 | if (sym->attr.dimension) |
dee7f6d1 | 1216 | sym->tlink->as = gfc_copy_array_spec (sym->as); |
4b8eb6ca | 1217 | |
1218 | /* Ideally, at this point, a copy would be made of the formal | |
1219 | arguments and their namespace. However, this does not appear | |
1220 | to be necessary, albeit at the expense of not being able to | |
1221 | use gfc_compare_interfaces directly. */ | |
1222 | ||
1223 | if (sym->result && sym->result != sym) | |
1224 | { | |
dee7f6d1 | 1225 | sym->tlink->result = sym->result; |
4b8eb6ca | 1226 | sym->result = NULL; |
1227 | } | |
1228 | else if (sym->result) | |
1229 | { | |
dee7f6d1 | 1230 | sym->tlink->result = sym->tlink; |
4b8eb6ca | 1231 | } |
1232 | } | |
1233 | else if (sym && !sym->gfc_new | |
1234 | && gfc_current_state () != COMP_INTERFACE) | |
858f9894 | 1235 | { |
16f49153 | 1236 | /* Trap another encompassed procedure with the same name. All |
1237 | these conditions are necessary to avoid picking up an entry | |
1238 | whose name clashes with that of the encompassing procedure; | |
c77c84dd | 1239 | this is handled using gsymbols to register unique, globally |
16f49153 | 1240 | accessible names. */ |
858f9894 | 1241 | if (sym->attr.flavor != 0 |
1a9745d2 | 1242 | && sym->attr.proc != 0 |
05b3eb93 | 1243 | && (sym->attr.subroutine || sym->attr.function || sym->attr.entry) |
1a9745d2 | 1244 | && sym->attr.if_source != IFSRC_UNKNOWN) |
33994aeb | 1245 | { |
1246 | gfc_error_now ("Procedure %qs at %C is already defined at %L", | |
1247 | name, &sym->declared_at); | |
1248 | return true; | |
1249 | } | |
05b3eb93 | 1250 | if (sym->attr.flavor != 0 |
1251 | && sym->attr.entry && sym->attr.if_source != IFSRC_UNKNOWN) | |
33994aeb | 1252 | { |
1253 | gfc_error_now ("Procedure %qs at %C is already defined at %L", | |
1254 | name, &sym->declared_at); | |
1255 | return true; | |
1256 | } | |
05b3eb93 | 1257 | |
3eb3b784 | 1258 | if (sym->attr.external && sym->attr.procedure |
1259 | && gfc_current_state () == COMP_CONTAINS) | |
33994aeb | 1260 | { |
1261 | gfc_error_now ("Contained procedure %qs at %C clashes with " | |
1262 | "procedure defined at %L", | |
1263 | name, &sym->declared_at); | |
1264 | return true; | |
1265 | } | |
3eb3b784 | 1266 | |
5720fd2f | 1267 | /* Trap a procedure with a name the same as interface in the |
1268 | encompassing scope. */ | |
1269 | if (sym->attr.generic != 0 | |
db697236 | 1270 | && (sym->attr.subroutine || sym->attr.function) |
1271 | && !sym->attr.mod_proc) | |
33994aeb | 1272 | { |
1273 | gfc_error_now ("Name %qs at %C is already defined" | |
1274 | " as a generic interface at %L", | |
1275 | name, &sym->declared_at); | |
1276 | return true; | |
1277 | } | |
5720fd2f | 1278 | |
858f9894 | 1279 | /* Trap declarations of attributes in encompassing scope. The |
1280 | signature for this is that ts.kind is set. Legitimate | |
1281 | references only set ts.type. */ | |
1282 | if (sym->ts.kind != 0 | |
1a9745d2 | 1283 | && !sym->attr.implicit_type |
1284 | && sym->attr.proc == 0 | |
1285 | && gfc_current_ns->parent != NULL | |
1286 | && sym->attr.access == 0 | |
1287 | && !module_fcn_entry) | |
33994aeb | 1288 | { |
1289 | gfc_error_now ("Procedure %qs at %C has an explicit interface " | |
b229bdf2 | 1290 | "from a previous declaration", name); |
33994aeb | 1291 | return true; |
1292 | } | |
b229bdf2 | 1293 | } |
1294 | ||
dc38f1d9 | 1295 | /* C1246 (R1225) MODULE shall appear only in the function-stmt or |
1296 | subroutine-stmt of a module subprogram or of a nonabstract interface | |
1297 | body that is declared in the scoping unit of a module or submodule. */ | |
1298 | if (sym->attr.external | |
1299 | && (sym->attr.subroutine || sym->attr.function) | |
1300 | && sym->attr.if_source == IFSRC_IFBODY | |
1301 | && !current_attr.module_procedure | |
1302 | && sym->attr.proc == PROC_MODULE | |
1303 | && gfc_state_stack->state == COMP_CONTAINS) | |
33994aeb | 1304 | { |
1305 | gfc_error_now ("Procedure %qs defined in interface body at %L " | |
1306 | "clashes with internal procedure defined at %C", | |
1307 | name, &sym->declared_at); | |
1308 | return true; | |
1309 | } | |
dc38f1d9 | 1310 | |
1311 | if (sym && !sym->gfc_new | |
1312 | && sym->attr.flavor != FL_UNKNOWN | |
1313 | && sym->attr.referenced == 0 && sym->attr.subroutine == 1 | |
1314 | && gfc_state_stack->state == COMP_CONTAINS | |
1315 | && gfc_state_stack->previous->state == COMP_SUBROUTINE) | |
33994aeb | 1316 | { |
1317 | gfc_error_now ("Procedure %qs at %C is already defined at %L", | |
1318 | name, &sym->declared_at); | |
1319 | return true; | |
1320 | } | |
858f9894 | 1321 | |
1322 | if (gfc_current_ns->parent == NULL || *result == NULL) | |
1323 | return rc; | |
4ee9c684 | 1324 | |
d77f260f | 1325 | /* Module function entries will already have a symtree in |
1326 | the current namespace but will need one at module level. */ | |
1327 | if (module_fcn_entry) | |
861d824f | 1328 | { |
1329 | /* Present if entry is declared to be a module procedure. */ | |
1330 | rc = gfc_find_sym_tree (name, gfc_current_ns->parent, 0, &st); | |
1331 | if (st == NULL) | |
1332 | st = gfc_new_symtree (&gfc_current_ns->parent->sym_root, name); | |
1333 | } | |
d77f260f | 1334 | else |
1335 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); | |
4ee9c684 | 1336 | |
4ee9c684 | 1337 | st->n.sym = sym; |
1338 | sym->refs++; | |
1339 | ||
f6d0e37a | 1340 | /* See if the procedure should be a module procedure. */ |
4ee9c684 | 1341 | |
d77f260f | 1342 | if (((sym->ns->proc_name != NULL |
b229bdf2 | 1343 | && sym->ns->proc_name->attr.flavor == FL_MODULE |
1344 | && sym->attr.proc != PROC_MODULE) | |
1345 | || (module_fcn_entry && sym->attr.proc != PROC_MODULE)) | |
1346 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) | |
4ee9c684 | 1347 | rc = 2; |
1348 | ||
1349 | return rc; | |
1350 | } | |
1351 | ||
1352 | ||
c5d33754 | 1353 | /* Verify that the given symbol representing a parameter is C |
1354 | interoperable, by checking to see if it was marked as such after | |
1355 | its declaration. If the given symbol is not interoperable, a | |
1356 | warning is reported, thus removing the need to return the status to | |
1357 | the calling function. The standard does not require the user use | |
1358 | one of the iso_c_binding named constants to declare an | |
1359 | interoperable parameter, but we can't be sure if the param is C | |
1360 | interop or not if the user doesn't. For example, integer(4) may be | |
1361 | legal Fortran, but doesn't have meaning in C. It may interop with | |
1362 | a number of the C types, which causes a problem because the | |
1363 | compiler can't know which one. This code is almost certainly not | |
1364 | portable, and the user will get what they deserve if the C type | |
1365 | across platforms isn't always interoperable with integer(4). If | |
1366 | the user had used something like integer(c_int) or integer(c_long), | |
1367 | the compiler could have automatically handled the varying sizes | |
1368 | across platforms. */ | |
1369 | ||
60e19868 | 1370 | bool |
2564c57a | 1371 | gfc_verify_c_interop_param (gfc_symbol *sym) |
c5d33754 | 1372 | { |
1373 | int is_c_interop = 0; | |
60e19868 | 1374 | bool retval = true; |
c5d33754 | 1375 | |
1376 | /* We check implicitly typed variables in symbol.c:gfc_set_default_type(). | |
1377 | Don't repeat the checks here. */ | |
1378 | if (sym->attr.implicit_type) | |
60e19868 | 1379 | return true; |
8db94b3b | 1380 | |
c5d33754 | 1381 | /* For subroutines or functions that are passed to a BIND(C) procedure, |
1382 | they're interoperable if they're BIND(C) and their params are all | |
1383 | interoperable. */ | |
1384 | if (sym->attr.flavor == FL_PROCEDURE) | |
1385 | { | |
1386 | if (sym->attr.is_bind_c == 0) | |
1387 | { | |
bf79c656 | 1388 | gfc_error_now ("Procedure %qs at %L must have the BIND(C) " |
1389 | "attribute to be C interoperable", sym->name, | |
1390 | &(sym->declared_at)); | |
60e19868 | 1391 | return false; |
c5d33754 | 1392 | } |
1393 | else | |
1394 | { | |
1395 | if (sym->attr.is_c_interop == 1) | |
1396 | /* We've already checked this procedure; don't check it again. */ | |
60e19868 | 1397 | return true; |
c5d33754 | 1398 | else |
1399 | return verify_bind_c_sym (sym, &(sym->ts), sym->attr.in_common, | |
1400 | sym->common_block); | |
1401 | } | |
1402 | } | |
8db94b3b | 1403 | |
c5d33754 | 1404 | /* See if we've stored a reference to a procedure that owns sym. */ |
1405 | if (sym->ns != NULL && sym->ns->proc_name != NULL) | |
1406 | { | |
1407 | if (sym->ns->proc_name->attr.is_bind_c == 1) | |
1408 | { | |
60e19868 | 1409 | is_c_interop = (gfc_verify_c_interop(&(sym->ts)) ? 1 : 0); |
c5d33754 | 1410 | |
1411 | if (is_c_interop != 1) | |
1412 | { | |
1413 | /* Make personalized messages to give better feedback. */ | |
1414 | if (sym->ts.type == BT_DERIVED) | |
716da296 | 1415 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1416 | "BIND(C) procedure %qs but is not C interoperable " | |
1417 | "because derived type %qs is not C interoperable", | |
c5d33754 | 1418 | sym->name, &(sym->declared_at), |
8db94b3b | 1419 | sym->ns->proc_name->name, |
eeebe20b | 1420 | sym->ts.u.derived->name); |
2564c57a | 1421 | else if (sym->ts.type == BT_CLASS) |
716da296 | 1422 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1423 | "BIND(C) procedure %qs but is not C interoperable " | |
2564c57a | 1424 | "because it is polymorphic", |
1425 | sym->name, &(sym->declared_at), | |
1426 | sym->ns->proc_name->name); | |
bf79c656 | 1427 | else if (warn_c_binding_type) |
4166acc7 | 1428 | gfc_warning (OPT_Wc_binding_type, |
1429 | "Variable %qs at %L is a dummy argument of the " | |
1430 | "BIND(C) procedure %qs but may not be C " | |
c5d33754 | 1431 | "interoperable", |
1432 | sym->name, &(sym->declared_at), | |
1433 | sym->ns->proc_name->name); | |
1434 | } | |
e4eda3ec | 1435 | |
1436 | /* Character strings are only C interoperable if they have a | |
1437 | length of 1. */ | |
1438 | if (sym->ts.type == BT_CHARACTER) | |
1439 | { | |
eeebe20b | 1440 | gfc_charlen *cl = sym->ts.u.cl; |
e4eda3ec | 1441 | if (!cl || !cl->length || cl->length->expr_type != EXPR_CONSTANT |
1442 | || mpz_cmp_si (cl->length->value.integer, 1) != 0) | |
1443 | { | |
716da296 | 1444 | gfc_error ("Character argument %qs at %L " |
e4eda3ec | 1445 | "must be length 1 because " |
716da296 | 1446 | "procedure %qs is BIND(C)", |
e4eda3ec | 1447 | sym->name, &sym->declared_at, |
1448 | sym->ns->proc_name->name); | |
60e19868 | 1449 | retval = false; |
e4eda3ec | 1450 | } |
1451 | } | |
1452 | ||
c5d33754 | 1453 | /* We have to make sure that any param to a bind(c) routine does |
1454 | not have the allocatable, pointer, or optional attributes, | |
1455 | according to J3/04-007, section 5.1. */ | |
a435dc3a | 1456 | if (sym->attr.allocatable == 1 |
2e2156cf | 1457 | && !gfc_notify_std (GFC_STD_F2018, "Variable %qs at %L with " |
0d2b3c9c | 1458 | "ALLOCATABLE attribute in procedure %qs " |
a435dc3a | 1459 | "with BIND(C)", sym->name, |
1460 | &(sym->declared_at), | |
1461 | sym->ns->proc_name->name)) | |
1462 | retval = false; | |
1463 | ||
1464 | if (sym->attr.pointer == 1 | |
2e2156cf | 1465 | && !gfc_notify_std (GFC_STD_F2018, "Variable %qs at %L with " |
0d2b3c9c | 1466 | "POINTER attribute in procedure %qs " |
a435dc3a | 1467 | "with BIND(C)", sym->name, |
1468 | &(sym->declared_at), | |
1469 | sym->ns->proc_name->name)) | |
1470 | retval = false; | |
1471 | ||
1472 | if ((sym->attr.allocatable || sym->attr.pointer) && !sym->as) | |
c5d33754 | 1473 | { |
716da296 | 1474 | gfc_error ("Scalar variable %qs at %L with POINTER or " |
1475 | "ALLOCATABLE in procedure %qs with BIND(C) is not yet" | |
a435dc3a | 1476 | " supported", sym->name, &(sym->declared_at), |
c5d33754 | 1477 | sym->ns->proc_name->name); |
60e19868 | 1478 | retval = false; |
c5d33754 | 1479 | } |
1480 | ||
495e197c | 1481 | if (sym->attr.optional == 1 && sym->attr.value) |
c5d33754 | 1482 | { |
716da296 | 1483 | gfc_error ("Variable %qs at %L cannot have both the OPTIONAL " |
1484 | "and the VALUE attribute because procedure %qs " | |
495e197c | 1485 | "is BIND(C)", sym->name, &(sym->declared_at), |
c5d33754 | 1486 | sym->ns->proc_name->name); |
60e19868 | 1487 | retval = false; |
c5d33754 | 1488 | } |
495e197c | 1489 | else if (sym->attr.optional == 1 |
2e2156cf | 1490 | && !gfc_notify_std (GFC_STD_F2018, "Variable %qs " |
60e19868 | 1491 | "at %L with OPTIONAL attribute in " |
76e207a9 | 1492 | "procedure %qs which is BIND(C)", |
1493 | sym->name, &(sym->declared_at), | |
60e19868 | 1494 | sym->ns->proc_name->name)) |
1495 | retval = false; | |
c5d33754 | 1496 | |
1497 | /* Make sure that if it has the dimension attribute, that it is | |
9350ae4e | 1498 | either assumed size or explicit shape. Deferred shape is already |
1499 | covered by the pointer/allocatable attribute. */ | |
1500 | if (sym->as != NULL && sym->as->type == AS_ASSUMED_SHAPE | |
2e2156cf | 1501 | && !gfc_notify_std (GFC_STD_F2018, "Assumed-shape array %qs " |
60e19868 | 1502 | "at %L as dummy argument to the BIND(C) " |
2f7de6c1 | 1503 | "procedure %qs at %L", sym->name, |
76e207a9 | 1504 | &(sym->declared_at), |
1505 | sym->ns->proc_name->name, | |
60e19868 | 1506 | &(sym->ns->proc_name->declared_at))) |
1507 | retval = false; | |
c5d33754 | 1508 | } |
1509 | } | |
1510 | ||
1511 | return retval; | |
1512 | } | |
1513 | ||
1514 | ||
1de1b1a9 | 1515 | |
c5d33754 | 1516 | /* Function called by variable_decl() that adds a name to the symbol table. */ |
4ee9c684 | 1517 | |
60e19868 | 1518 | static bool |
3e715c81 | 1519 | build_sym (const char *name, gfc_charlen *cl, bool cl_deferred, |
1a9745d2 | 1520 | gfc_array_spec **as, locus *var_locus) |
4ee9c684 | 1521 | { |
1522 | symbol_attribute attr; | |
1523 | gfc_symbol *sym; | |
9b49c3cb | 1524 | int upper; |
7200bfee | 1525 | gfc_symtree *st; |
1526 | ||
1527 | /* Symbols in a submodule are host associated from the parent module or | |
1528 | submodules. Therefore, they can be overridden by declarations in the | |
1529 | submodule scope. Deal with this by attaching the existing symbol to | |
1530 | a new symtree and recycling the old symtree with a new symbol... */ | |
1531 | st = gfc_find_symtree (gfc_current_ns->sym_root, name); | |
1532 | if (st != NULL && gfc_state_stack->state == COMP_SUBMODULE | |
1533 | && st->n.sym != NULL | |
1534 | && st->n.sym->attr.host_assoc && st->n.sym->attr.used_in_submodule) | |
1535 | { | |
1536 | gfc_symtree *s = gfc_get_unique_symtree (gfc_current_ns); | |
1537 | s->n.sym = st->n.sym; | |
1538 | sym = gfc_new_symbol (name, gfc_current_ns); | |
4ee9c684 | 1539 | |
7200bfee | 1540 | |
1541 | st->n.sym = sym; | |
1542 | sym->refs++; | |
1543 | gfc_set_sym_referenced (sym); | |
1544 | } | |
1545 | /* ...Otherwise generate a new symtree and new symbol. */ | |
1546 | else if (gfc_get_symbol (name, NULL, &sym)) | |
60e19868 | 1547 | return false; |
4ee9c684 | 1548 | |
9b49c3cb | 1549 | /* Check if the name has already been defined as a type. The |
1550 | first letter of the symtree will be in upper case then. Of | |
1551 | course, this is only necessary if the upper case letter is | |
1552 | actually different. */ | |
1553 | ||
1554 | upper = TOUPPER(name[0]); | |
1555 | if (upper != name[0]) | |
1556 | { | |
1557 | char u_name[GFC_MAX_SYMBOL_LEN + 1]; | |
1558 | gfc_symtree *st; | |
9b49c3cb | 1559 | |
d8aad786 | 1560 | gcc_assert (strlen(name) <= GFC_MAX_SYMBOL_LEN); |
1561 | strcpy (u_name, name); | |
9b49c3cb | 1562 | u_name[0] = upper; |
1563 | ||
1564 | st = gfc_find_symtree (gfc_current_ns->sym_root, u_name); | |
1565 | ||
d7cd448a | 1566 | /* STRUCTURE types can alias symbol names */ |
1567 | if (st != 0 && st->n.sym->attr.flavor != FL_STRUCT) | |
9b49c3cb | 1568 | { |
1569 | gfc_error ("Symbol %qs at %C also declared as a type at %L", name, | |
1570 | &st->n.sym->declared_at); | |
1571 | return false; | |
1572 | } | |
1573 | } | |
1574 | ||
f6d0e37a | 1575 | /* Start updating the symbol table. Add basic type attribute if present. */ |
4ee9c684 | 1576 | if (current_ts.type != BT_UNKNOWN |
1a9745d2 | 1577 | && (sym->attr.implicit_type == 0 |
1578 | || !gfc_compare_types (&sym->ts, ¤t_ts)) | |
60e19868 | 1579 | && !gfc_add_type (sym, ¤t_ts, var_locus)) |
1580 | return false; | |
4ee9c684 | 1581 | |
1582 | if (sym->ts.type == BT_CHARACTER) | |
3e715c81 | 1583 | { |
1584 | sym->ts.u.cl = cl; | |
1585 | sym->ts.deferred = cl_deferred; | |
1586 | } | |
4ee9c684 | 1587 | |
1588 | /* Add dimension attribute if present. */ | |
60e19868 | 1589 | if (!gfc_set_array_spec (sym, *as, var_locus)) |
1590 | return false; | |
4ee9c684 | 1591 | *as = NULL; |
1592 | ||
1593 | /* Add attribute to symbol. The copy is so that we can reset the | |
1594 | dimension attribute. */ | |
1595 | attr = current_attr; | |
1596 | attr.dimension = 0; | |
aff518b0 | 1597 | attr.codimension = 0; |
4ee9c684 | 1598 | |
60e19868 | 1599 | if (!gfc_copy_attr (&sym->attr, &attr, var_locus)) |
1600 | return false; | |
4ee9c684 | 1601 | |
c5d33754 | 1602 | /* Finish any work that may need to be done for the binding label, |
1603 | if it's a bind(c). The bind(c) attr is found before the symbol | |
1604 | is made, and before the symbol name (for data decls), so the | |
1605 | current_ts is holding the binding label, or nothing if the | |
1606 | name= attr wasn't given. Therefore, test here if we're dealing | |
1607 | with a bind(c) and make sure the binding label is set correctly. */ | |
1608 | if (sym->attr.is_bind_c == 1) | |
1609 | { | |
7b2060ba | 1610 | if (!sym->binding_label) |
c5d33754 | 1611 | { |
825718f9 | 1612 | /* Set the binding label and verify that if a NAME= was specified |
1613 | then only one identifier was in the entity-decl-list. */ | |
76e207a9 | 1614 | if (!set_binding_label (&sym->binding_label, sym->name, |
60e19868 | 1615 | num_idents_on_line)) |
1616 | return false; | |
c5d33754 | 1617 | } |
1618 | } | |
1619 | ||
1620 | /* See if we know we're in a common block, and if it's a bind(c) | |
1621 | common then we need to make sure we're an interoperable type. */ | |
1622 | if (sym->attr.in_common == 1) | |
1623 | { | |
1624 | /* Test the common block object. */ | |
1625 | if (sym->common_block != NULL && sym->common_block->is_bind_c == 1 | |
1626 | && sym->ts.is_c_interop != 1) | |
1627 | { | |
bf79c656 | 1628 | gfc_error_now ("Variable %qs in common block %qs at %C " |
c5d33754 | 1629 | "must be declared with a C interoperable " |
bf79c656 | 1630 | "kind since common block %qs is BIND(C)", |
c5d33754 | 1631 | sym->name, sym->common_block->name, |
1632 | sym->common_block->name); | |
1633 | gfc_clear_error (); | |
1634 | } | |
1635 | } | |
1636 | ||
2457a77e | 1637 | sym->attr.implied_index = 0; |
1638 | ||
9d958d5b | 1639 | /* Use the parameter expressions for a parameterized derived type. */ |
1640 | if ((sym->ts.type == BT_DERIVED || sym->ts.type == BT_CLASS) | |
1641 | && sym->ts.u.derived->attr.pdt_type && type_param_spec_list) | |
1642 | sym->param_list = gfc_copy_actual_arglist (type_param_spec_list); | |
1643 | ||
fa102e56 | 1644 | if (sym->ts.type == BT_CLASS) |
e8393d49 | 1645 | return gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as); |
1de1b1a9 | 1646 | |
60e19868 | 1647 | return true; |
4ee9c684 | 1648 | } |
1649 | ||
1a9745d2 | 1650 | |
a270dc8e | 1651 | /* Set character constant to the given length. The constant will be padded or |
d1a39099 | 1652 | truncated. If we're inside an array constructor without a typespec, we |
1653 | additionally check that all elements have the same length; check_len -1 | |
1654 | means no checking. */ | |
a270dc8e | 1655 | |
1656 | void | |
bdfec5bf | 1657 | gfc_set_constant_character_len (gfc_charlen_t len, gfc_expr *expr, |
1658 | gfc_charlen_t check_len) | |
a270dc8e | 1659 | { |
c32f863c | 1660 | gfc_char_t *s; |
bdfec5bf | 1661 | gfc_charlen_t slen; |
a270dc8e | 1662 | |
00fff882 | 1663 | if (expr->ts.type != BT_CHARACTER) |
1664 | return; | |
6ade726e | 1665 | |
3badc59b | 1666 | if (expr->expr_type != EXPR_CONSTANT) |
1667 | { | |
1668 | gfc_error_now ("CHARACTER length must be a constant at %L", &expr->where); | |
1669 | return; | |
1670 | } | |
a270dc8e | 1671 | |
1672 | slen = expr->value.character.length; | |
1673 | if (len != slen) | |
1674 | { | |
c32f863c | 1675 | s = gfc_get_wide_string (len + 1); |
1676 | memcpy (s, expr->value.character.string, | |
1677 | MIN (len, slen) * sizeof (gfc_char_t)); | |
a270dc8e | 1678 | if (len > slen) |
c32f863c | 1679 | gfc_wide_memset (&s[slen], ' ', len - slen); |
1bfea7e8 | 1680 | |
fed21cc2 | 1681 | if (warn_character_truncation && slen > len) |
bf79c656 | 1682 | gfc_warning_now (OPT_Wcharacter_truncation, |
1683 | "CHARACTER expression at %L is being truncated " | |
bdfec5bf | 1684 | "(%ld/%ld)", &expr->where, |
1685 | (long) slen, (long) len); | |
1bfea7e8 | 1686 | |
1687 | /* Apply the standard by 'hand' otherwise it gets cleared for | |
1688 | initializers. */ | |
d1a39099 | 1689 | if (check_len != -1 && slen != check_len |
1690 | && !(gfc_option.allow_std & GFC_STD_GNU)) | |
1bfea7e8 | 1691 | gfc_error_now ("The CHARACTER elements of the array constructor " |
bdfec5bf | 1692 | "at %L must have the same length (%ld/%ld)", |
1693 | &expr->where, (long) slen, | |
1694 | (long) check_len); | |
1bfea7e8 | 1695 | |
89f528df | 1696 | s[len] = '\0'; |
434f0922 | 1697 | free (expr->value.character.string); |
a270dc8e | 1698 | expr->value.character.string = s; |
1699 | expr->value.character.length = len; | |
1700 | } | |
1701 | } | |
4ee9c684 | 1702 | |
3b6a4b41 | 1703 | |
e14bee04 | 1704 | /* Function to create and update the enumerator history |
3b6a4b41 | 1705 | using the information passed as arguments. |
e14bee04 | 1706 | Pointer "max_enum" is also updated, to point to |
1707 | enum history node containing largest initializer. | |
3b6a4b41 | 1708 | |
1709 | SYM points to the symbol node of enumerator. | |
f6d0e37a | 1710 | INIT points to its enumerator value. */ |
3b6a4b41 | 1711 | |
e14bee04 | 1712 | static void |
1a9745d2 | 1713 | create_enum_history (gfc_symbol *sym, gfc_expr *init) |
3b6a4b41 | 1714 | { |
1715 | enumerator_history *new_enum_history; | |
1716 | gcc_assert (sym != NULL && init != NULL); | |
1717 | ||
48d8ad5a | 1718 | new_enum_history = XCNEW (enumerator_history); |
3b6a4b41 | 1719 | |
1720 | new_enum_history->sym = sym; | |
1721 | new_enum_history->initializer = init; | |
1722 | new_enum_history->next = NULL; | |
1723 | ||
1724 | if (enum_history == NULL) | |
1725 | { | |
1726 | enum_history = new_enum_history; | |
1727 | max_enum = enum_history; | |
1728 | } | |
1729 | else | |
1730 | { | |
1731 | new_enum_history->next = enum_history; | |
1732 | enum_history = new_enum_history; | |
1733 | ||
e14bee04 | 1734 | if (mpz_cmp (max_enum->initializer->value.integer, |
3b6a4b41 | 1735 | new_enum_history->initializer->value.integer) < 0) |
1a9745d2 | 1736 | max_enum = new_enum_history; |
3b6a4b41 | 1737 | } |
1738 | } | |
1739 | ||
1740 | ||
e14bee04 | 1741 | /* Function to free enum kind history. */ |
3b6a4b41 | 1742 | |
e14bee04 | 1743 | void |
1a9745d2 | 1744 | gfc_free_enum_history (void) |
3b6a4b41 | 1745 | { |
e14bee04 | 1746 | enumerator_history *current = enum_history; |
1747 | enumerator_history *next; | |
3b6a4b41 | 1748 | |
1749 | while (current != NULL) | |
1750 | { | |
1751 | next = current->next; | |
434f0922 | 1752 | free (current); |
3b6a4b41 | 1753 | current = next; |
1754 | } | |
1755 | max_enum = NULL; | |
1756 | enum_history = NULL; | |
1757 | } | |
1758 | ||
1759 | ||
4ee9c684 | 1760 | /* Function called by variable_decl() that adds an initialization |
1761 | expression to a symbol. */ | |
1762 | ||
60e19868 | 1763 | static bool |
f6d0e37a | 1764 | add_init_expr_to_sym (const char *name, gfc_expr **initp, locus *var_locus) |
4ee9c684 | 1765 | { |
1766 | symbol_attribute attr; | |
1767 | gfc_symbol *sym; | |
1768 | gfc_expr *init; | |
1769 | ||
1770 | init = *initp; | |
36b0a1b0 | 1771 | if (find_special (name, &sym, false)) |
60e19868 | 1772 | return false; |
4ee9c684 | 1773 | |
1774 | attr = sym->attr; | |
1775 | ||
1776 | /* If this symbol is confirming an implicit parameter type, | |
1777 | then an initialization expression is not allowed. */ | |
1778 | if (attr.flavor == FL_PARAMETER | |
1779 | && sym->value != NULL | |
1780 | && *initp != NULL) | |
1781 | { | |
716da296 | 1782 | gfc_error ("Initializer not allowed for PARAMETER %qs at %C", |
4ee9c684 | 1783 | sym->name); |
60e19868 | 1784 | return false; |
4ee9c684 | 1785 | } |
1786 | ||
1787 | if (init == NULL) | |
1788 | { | |
1789 | /* An initializer is required for PARAMETER declarations. */ | |
1790 | if (attr.flavor == FL_PARAMETER) | |
1791 | { | |
1792 | gfc_error ("PARAMETER at %L is missing an initializer", var_locus); | |
60e19868 | 1793 | return false; |
4ee9c684 | 1794 | } |
1795 | } | |
1796 | else | |
1797 | { | |
1798 | /* If a variable appears in a DATA block, it cannot have an | |
b97f1a18 | 1799 | initializer. */ |
4ee9c684 | 1800 | if (sym->attr.data) |
1801 | { | |
716da296 | 1802 | gfc_error ("Variable %qs at %C with an initializer already " |
1a9745d2 | 1803 | "appears in a DATA statement", sym->name); |
60e19868 | 1804 | return false; |
4ee9c684 | 1805 | } |
1806 | ||
cca3db55 | 1807 | /* Check if the assignment can happen. This has to be put off |
23d075f4 | 1808 | until later for derived type variables and procedure pointers. */ |
d7cd448a | 1809 | if (!gfc_bt_struct (sym->ts.type) && !gfc_bt_struct (init->ts.type) |
1de1b1a9 | 1810 | && sym->ts.type != BT_CLASS && init->ts.type != BT_CLASS |
8db94b3b | 1811 | && !sym->attr.proc_pointer |
60e19868 | 1812 | && !gfc_check_assign_symbol (sym, NULL, init)) |
1813 | return false; | |
4ee9c684 | 1814 | |
eeebe20b | 1815 | if (sym->ts.type == BT_CHARACTER && sym->ts.u.cl |
da540712 | 1816 | && init->ts.type == BT_CHARACTER) |
a270dc8e | 1817 | { |
1818 | /* Update symbol character length according initializer. */ | |
60e19868 | 1819 | if (!gfc_check_assign_symbol (sym, NULL, init)) |
1820 | return false; | |
da540712 | 1821 | |
eeebe20b | 1822 | if (sym->ts.u.cl->length == NULL) |
a270dc8e | 1823 | { |
9f4d9f83 | 1824 | gfc_charlen_t clen; |
f6d0e37a | 1825 | /* If there are multiple CHARACTER variables declared on the |
1826 | same line, we don't want them to share the same length. */ | |
d270ce52 | 1827 | sym->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
e9c873a4 | 1828 | |
03c2a028 | 1829 | if (sym->attr.flavor == FL_PARAMETER) |
1830 | { | |
1831 | if (init->expr_type == EXPR_CONSTANT) | |
1832 | { | |
1833 | clen = init->value.character.length; | |
126387b5 | 1834 | sym->ts.u.cl->length |
9f4d9f83 | 1835 | = gfc_get_int_expr (gfc_charlen_int_kind, |
126387b5 | 1836 | NULL, clen); |
03c2a028 | 1837 | } |
1838 | else if (init->expr_type == EXPR_ARRAY) | |
1839 | { | |
fc9b0d53 | 1840 | if (init->ts.u.cl && init->ts.u.cl->length) |
cde225a2 | 1841 | { |
1842 | const gfc_expr *length = init->ts.u.cl->length; | |
1843 | if (length->expr_type != EXPR_CONSTANT) | |
1844 | { | |
1845 | gfc_error ("Cannot initialize parameter array " | |
1846 | "at %L " | |
1847 | "with variable length elements", | |
1848 | &sym->declared_at); | |
1849 | return false; | |
1850 | } | |
1851 | clen = mpz_get_si (length->value.integer); | |
1852 | } | |
9123b22a | 1853 | else if (init->value.constructor) |
1854 | { | |
1855 | gfc_constructor *c; | |
76e207a9 | 1856 | c = gfc_constructor_first (init->value.constructor); |
9123b22a | 1857 | clen = c->expr->value.character.length; |
1858 | } | |
1859 | else | |
1860 | gcc_unreachable (); | |
126387b5 | 1861 | sym->ts.u.cl->length |
9f4d9f83 | 1862 | = gfc_get_int_expr (gfc_charlen_int_kind, |
126387b5 | 1863 | NULL, clen); |
03c2a028 | 1864 | } |
eeebe20b | 1865 | else if (init->ts.u.cl && init->ts.u.cl->length) |
1866 | sym->ts.u.cl->length = | |
1867 | gfc_copy_expr (sym->value->ts.u.cl->length); | |
03c2a028 | 1868 | } |
a270dc8e | 1869 | } |
1870 | /* Update initializer character length according symbol. */ | |
eeebe20b | 1871 | else if (sym->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
a270dc8e | 1872 | { |
f8e2139b | 1873 | if (!gfc_specification_expr (sym->ts.u.cl->length)) |
1874 | return false; | |
1875 | ||
90ace78f | 1876 | int k = gfc_validate_kind (BT_INTEGER, gfc_charlen_int_kind, |
1877 | false); | |
1878 | /* resolve_charlen will complain later on if the length | |
1879 | is too large. Just skeep the initialization in that case. */ | |
1880 | if (mpz_cmp (sym->ts.u.cl->length->value.integer, | |
1881 | gfc_integer_kinds[k].huge) <= 0) | |
a270dc8e | 1882 | { |
90ace78f | 1883 | HOST_WIDE_INT len |
1884 | = gfc_mpz_get_hwi (sym->ts.u.cl->length->value.integer); | |
1885 | ||
1886 | if (init->expr_type == EXPR_CONSTANT) | |
1887 | gfc_set_constant_character_len (len, init, -1); | |
1888 | else if (init->expr_type == EXPR_ARRAY) | |
1889 | { | |
1890 | gfc_constructor *c; | |
126387b5 | 1891 | |
90ace78f | 1892 | /* Build a new charlen to prevent simplification from |
1893 | deleting the length before it is resolved. */ | |
1894 | init->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); | |
1895 | init->ts.u.cl->length | |
1896 | = gfc_copy_expr (sym->ts.u.cl->length); | |
39908fd9 | 1897 | |
90ace78f | 1898 | for (c = gfc_constructor_first (init->value.constructor); |
1899 | c; c = gfc_constructor_next (c)) | |
1900 | gfc_set_constant_character_len (len, c->expr, -1); | |
1901 | } | |
a270dc8e | 1902 | } |
1903 | } | |
1904 | } | |
1905 | ||
ae2864a8 | 1906 | /* If sym is implied-shape, set its upper bounds from init. */ |
1907 | if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension | |
1908 | && sym->as->type == AS_IMPLIED_SHAPE) | |
1909 | { | |
1910 | int dim; | |
1911 | ||
1912 | if (init->rank == 0) | |
1913 | { | |
1914 | gfc_error ("Can't initialize implied-shape array at %L" | |
1915 | " with scalar", &sym->declared_at); | |
60e19868 | 1916 | return false; |
ae2864a8 | 1917 | } |
ae2864a8 | 1918 | |
1919 | /* Shape should be present, we get an initialization expression. */ | |
1920 | gcc_assert (init->shape); | |
1921 | ||
1922 | for (dim = 0; dim < sym->as->rank; ++dim) | |
1923 | { | |
1924 | int k; | |
0c0c5469 | 1925 | gfc_expr *e, *lower; |
8db94b3b | 1926 | |
ae2864a8 | 1927 | lower = sym->as->lower[dim]; |
0c0c5469 | 1928 | |
76e207a9 | 1929 | /* If the lower bound is an array element from another |
0c0c5469 | 1930 | parameterized array, then it is marked with EXPR_VARIABLE and |
1931 | is an initialization expression. Try to reduce it. */ | |
1932 | if (lower->expr_type == EXPR_VARIABLE) | |
1933 | gfc_reduce_init_expr (lower); | |
1934 | ||
1935 | if (lower->expr_type == EXPR_CONSTANT) | |
1936 | { | |
1937 | /* All dimensions must be without upper bound. */ | |
1938 | gcc_assert (!sym->as->upper[dim]); | |
1939 | ||
1940 | k = lower->ts.kind; | |
1941 | e = gfc_get_constant_expr (BT_INTEGER, k, &sym->declared_at); | |
1942 | mpz_add (e->value.integer, lower->value.integer, | |
1943 | init->shape[dim]); | |
1944 | mpz_sub_ui (e->value.integer, e->value.integer, 1); | |
1945 | sym->as->upper[dim] = e; | |
1946 | } | |
1947 | else | |
ae2864a8 | 1948 | { |
1949 | gfc_error ("Non-constant lower bound in implied-shape" | |
1950 | " declaration at %L", &lower->where); | |
60e19868 | 1951 | return false; |
ae2864a8 | 1952 | } |
ae2864a8 | 1953 | } |
1954 | ||
1955 | sym->as->type = AS_EXPLICIT; | |
1956 | } | |
1957 | ||
c5d33754 | 1958 | /* Need to check if the expression we initialized this |
1959 | to was one of the iso_c_binding named constants. If so, | |
1960 | and we're a parameter (constant), let it be iso_c. | |
1961 | For example: | |
1962 | integer(c_int), parameter :: my_int = c_int | |
1963 | integer(my_int) :: my_int_2 | |
1964 | If we mark my_int as iso_c (since we can see it's value | |
1965 | is equal to one of the named constants), then my_int_2 | |
1966 | will be considered C interoperable. */ | |
d7cd448a | 1967 | if (sym->ts.type != BT_CHARACTER && !gfc_bt_struct (sym->ts.type)) |
c5d33754 | 1968 | { |
1969 | sym->ts.is_iso_c |= init->ts.is_iso_c; | |
1970 | sym->ts.is_c_interop |= init->ts.is_c_interop; | |
1971 | /* attr bits needed for module files. */ | |
1972 | sym->attr.is_iso_c |= init->ts.is_iso_c; | |
1973 | sym->attr.is_c_interop |= init->ts.is_c_interop; | |
1974 | if (init->ts.is_iso_c) | |
1975 | sym->ts.f90_type = init->ts.f90_type; | |
1976 | } | |
126387b5 | 1977 | |
4ee9c684 | 1978 | /* Add initializer. Make sure we keep the ranks sane. */ |
1979 | if (sym->attr.dimension && init->rank == 0) | |
7baa3fb4 | 1980 | { |
1981 | mpz_t size; | |
1982 | gfc_expr *array; | |
7baa3fb4 | 1983 | int n; |
1984 | if (sym->attr.flavor == FL_PARAMETER | |
1985 | && init->expr_type == EXPR_CONSTANT | |
60e19868 | 1986 | && spec_size (sym->as, &size) |
7baa3fb4 | 1987 | && mpz_cmp_si (size, 0) > 0) |
1988 | { | |
126387b5 | 1989 | array = gfc_get_array_expr (init->ts.type, init->ts.kind, |
1990 | &init->where); | |
7baa3fb4 | 1991 | for (n = 0; n < (int)mpz_get_si (size); n++) |
126387b5 | 1992 | gfc_constructor_append_expr (&array->value.constructor, |
1993 | n == 0 | |
1994 | ? init | |
1995 | : gfc_copy_expr (init), | |
1996 | &init->where); | |
8db94b3b | 1997 | |
7baa3fb4 | 1998 | array->shape = gfc_get_shape (sym->as->rank); |
1999 | for (n = 0; n < sym->as->rank; n++) | |
2000 | spec_dimen_size (sym->as, n, &array->shape[n]); | |
2001 | ||
2002 | init = array; | |
2003 | mpz_clear (size); | |
2004 | } | |
2005 | init->rank = sym->as->rank; | |
2006 | } | |
4ee9c684 | 2007 | |
2008 | sym->value = init; | |
3cd3c667 | 2009 | if (sym->attr.save == SAVE_NONE) |
2010 | sym->attr.save = SAVE_IMPLICIT; | |
4ee9c684 | 2011 | *initp = NULL; |
2012 | } | |
2013 | ||
60e19868 | 2014 | return true; |
4ee9c684 | 2015 | } |
2016 | ||
2017 | ||
2018 | /* Function called by variable_decl() that adds a name to a structure | |
2019 | being built. */ | |
2020 | ||
60e19868 | 2021 | static bool |
1a9745d2 | 2022 | build_struct (const char *name, gfc_charlen *cl, gfc_expr **init, |
2023 | gfc_array_spec **as) | |
4ee9c684 | 2024 | { |
d7cd448a | 2025 | gfc_state_data *s; |
4ee9c684 | 2026 | gfc_component *c; |
2027 | ||
53d2e124 | 2028 | /* F03:C438/C439. If the current symbol is of the same derived type that we're |
4ee9c684 | 2029 | constructing, it must have the pointer attribute. */ |
53d2e124 | 2030 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
eeebe20b | 2031 | && current_ts.u.derived == gfc_current_block () |
4ee9c684 | 2032 | && current_attr.pointer == 0) |
2033 | { | |
dd7553fe | 2034 | if (current_attr.allocatable |
2035 | && !gfc_notify_std(GFC_STD_F2008, "Component at %C " | |
2036 | "must have the POINTER attribute")) | |
2037 | { | |
2038 | return false; | |
2039 | } | |
2040 | else if (current_attr.allocatable == 0) | |
2041 | { | |
abfb4be5 | 2042 | gfc_error ("Component at %C must have the POINTER attribute"); |
2043 | return false; | |
2044 | } | |
4ee9c684 | 2045 | } |
abfb4be5 | 2046 | |
2047 | /* F03:C437. */ | |
2048 | if (current_ts.type == BT_CLASS | |
2049 | && !(current_attr.pointer || current_attr.allocatable)) | |
2050 | { | |
2051 | gfc_error ("Component %qs with CLASS at %C must be allocatable " | |
2052 | "or pointer", name); | |
2053 | return false; | |
dd7553fe | 2054 | } |
4ee9c684 | 2055 | |
1a9745d2 | 2056 | if (gfc_current_block ()->attr.pointer && (*as)->rank != 0) |
4ee9c684 | 2057 | { |
2058 | if ((*as)->type != AS_DEFERRED && (*as)->type != AS_EXPLICIT) | |
2059 | { | |
2060 | gfc_error ("Array component of structure at %C must have explicit " | |
2061 | "or deferred shape"); | |
60e19868 | 2062 | return false; |
4ee9c684 | 2063 | } |
2064 | } | |
2065 | ||
d7cd448a | 2066 | /* If we are in a nested union/map definition, gfc_add_component will not |
2067 | properly find repeated components because: | |
7d7125df | 2068 | (i) gfc_add_component does a flat search, where components of unions |
d7cd448a | 2069 | and maps are implicity chained so nested components may conflict. |
2070 | (ii) Unions and maps are not linked as components of their parent | |
2071 | structures until after they are parsed. | |
2072 | For (i) we use gfc_find_component which searches recursively, and for (ii) | |
2073 | we search each block directly from the parse stack until we find the top | |
2074 | level structure. */ | |
2075 | ||
2076 | s = gfc_state_stack; | |
2077 | if (s->state == COMP_UNION || s->state == COMP_MAP) | |
2078 | { | |
2079 | while (s->state == COMP_UNION || gfc_comp_struct (s->state)) | |
2080 | { | |
2081 | c = gfc_find_component (s->sym, name, true, true, NULL); | |
2082 | if (c != NULL) | |
2083 | { | |
1b7008c4 | 2084 | gfc_error_now ("Component %qs at %C already declared at %L", |
d7cd448a | 2085 | name, &c->loc); |
2086 | return false; | |
2087 | } | |
2088 | /* Break after we've searched the entire chain. */ | |
2089 | if (s->state == COMP_DERIVED || s->state == COMP_STRUCTURE) | |
2090 | break; | |
2091 | s = s->previous; | |
2092 | } | |
2093 | } | |
2094 | ||
60e19868 | 2095 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
2096 | return false; | |
4ee9c684 | 2097 | |
2098 | c->ts = current_ts; | |
eeebe20b | 2099 | if (c->ts.type == BT_CHARACTER) |
2100 | c->ts.u.cl = cl; | |
9d958d5b | 2101 | |
2102 | if (c->ts.type != BT_CLASS && c->ts.type != BT_DERIVED | |
f0efd2e8 | 2103 | && (c->ts.kind == 0 || c->ts.type == BT_CHARACTER) |
2104 | && saved_kind_expr != NULL) | |
9d958d5b | 2105 | c->kind_expr = gfc_copy_expr (saved_kind_expr); |
2106 | ||
3be2b8d5 | 2107 | c->attr = current_attr; |
4ee9c684 | 2108 | |
2109 | c->initializer = *init; | |
2110 | *init = NULL; | |
2111 | ||
2112 | c->as = *as; | |
2113 | if (c->as != NULL) | |
aff518b0 | 2114 | { |
2115 | if (c->as->corank) | |
2116 | c->attr.codimension = 1; | |
2117 | if (c->as->rank) | |
2118 | c->attr.dimension = 1; | |
2119 | } | |
4ee9c684 | 2120 | *as = NULL; |
2121 | ||
36d310d0 | 2122 | gfc_apply_init (&c->ts, &c->attr, c->initializer); |
a2f51d5f | 2123 | |
4ee9c684 | 2124 | /* Check array components. */ |
3be2b8d5 | 2125 | if (!c->attr.dimension) |
b3704193 | 2126 | goto scalar; |
4ee9c684 | 2127 | |
3be2b8d5 | 2128 | if (c->attr.pointer) |
4ee9c684 | 2129 | { |
2130 | if (c->as->type != AS_DEFERRED) | |
2131 | { | |
2294b616 | 2132 | gfc_error ("Pointer array component of structure at %C must have a " |
2133 | "deferred shape"); | |
2fa20713 | 2134 | return false; |
2294b616 | 2135 | } |
2136 | } | |
3be2b8d5 | 2137 | else if (c->attr.allocatable) |
2294b616 | 2138 | { |
2139 | if (c->as->type != AS_DEFERRED) | |
2140 | { | |
2141 | gfc_error ("Allocatable component of structure at %C must have a " | |
2142 | "deferred shape"); | |
2fa20713 | 2143 | return false; |
4ee9c684 | 2144 | } |
2145 | } | |
2146 | else | |
2147 | { | |
2148 | if (c->as->type != AS_EXPLICIT) | |
2149 | { | |
1a9745d2 | 2150 | gfc_error ("Array component of structure at %C must have an " |
2151 | "explicit shape"); | |
2fa20713 | 2152 | return false; |
4ee9c684 | 2153 | } |
2154 | } | |
2155 | ||
b3704193 | 2156 | scalar: |
2157 | if (c->ts.type == BT_CLASS) | |
2fa20713 | 2158 | return gfc_build_class_symbol (&c->ts, &c->attr, &c->as); |
431a19be | 2159 | |
9d958d5b | 2160 | if (c->attr.pdt_kind || c->attr.pdt_len) |
2161 | { | |
2162 | gfc_symbol *sym; | |
2163 | gfc_find_symbol (c->name, gfc_current_block ()->f2k_derived, | |
2164 | 0, &sym); | |
2165 | if (sym == NULL) | |
2166 | { | |
2167 | gfc_error ("Type parameter %qs at %C has no corresponding entry " | |
2168 | "in the type parameter name list at %L", | |
2169 | c->name, &gfc_current_block ()->declared_at); | |
2170 | return false; | |
2171 | } | |
2172 | sym->ts = c->ts; | |
2173 | sym->attr.pdt_kind = c->attr.pdt_kind; | |
2174 | sym->attr.pdt_len = c->attr.pdt_len; | |
2175 | if (c->initializer) | |
2176 | sym->value = gfc_copy_expr (c->initializer); | |
2177 | sym->attr.flavor = FL_VARIABLE; | |
2178 | } | |
2179 | ||
2180 | if ((c->ts.type == BT_DERIVED || c->ts.type == BT_CLASS) | |
2181 | && c->ts.u.derived && c->ts.u.derived->attr.pdt_template | |
2182 | && decl_type_param_list) | |
2183 | c->param_list = gfc_copy_actual_arglist (decl_type_param_list); | |
2184 | ||
2fa20713 | 2185 | return true; |
4ee9c684 | 2186 | } |
2187 | ||
2188 | ||
2189 | /* Match a 'NULL()', and possibly take care of some side effects. */ | |
2190 | ||
2191 | match | |
1a9745d2 | 2192 | gfc_match_null (gfc_expr **result) |
4ee9c684 | 2193 | { |
2194 | gfc_symbol *sym; | |
f9d34e9a | 2195 | match m, m2 = MATCH_NO; |
4ee9c684 | 2196 | |
f9d34e9a | 2197 | if ((m = gfc_match (" null ( )")) == MATCH_ERROR) |
2198 | return MATCH_ERROR; | |
2199 | ||
2200 | if (m == MATCH_NO) | |
2201 | { | |
2202 | locus old_loc; | |
2203 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
2204 | ||
d780a64b | 2205 | if ((m2 = gfc_match (" null (")) != MATCH_YES) |
f9d34e9a | 2206 | return m2; |
2207 | ||
2208 | old_loc = gfc_current_locus; | |
2209 | if ((m2 = gfc_match (" %n ) ", name)) == MATCH_ERROR) | |
2210 | return MATCH_ERROR; | |
2211 | if (m2 != MATCH_YES | |
2212 | && ((m2 = gfc_match (" mold = %n )", name)) == MATCH_ERROR)) | |
2213 | return MATCH_ERROR; | |
2214 | if (m2 == MATCH_NO) | |
2215 | { | |
2216 | gfc_current_locus = old_loc; | |
2217 | return MATCH_NO; | |
2218 | } | |
2219 | } | |
4ee9c684 | 2220 | |
2221 | /* The NULL symbol now has to be/become an intrinsic function. */ | |
2222 | if (gfc_get_symbol ("null", NULL, &sym)) | |
2223 | { | |
2224 | gfc_error ("NULL() initialization at %C is ambiguous"); | |
2225 | return MATCH_ERROR; | |
2226 | } | |
2227 | ||
2228 | gfc_intrinsic_symbol (sym); | |
2229 | ||
2230 | if (sym->attr.proc != PROC_INTRINSIC | |
ddf8ce2d | 2231 | && !(sym->attr.use_assoc && sym->attr.intrinsic) |
60e19868 | 2232 | && (!gfc_add_procedure(&sym->attr, PROC_INTRINSIC, sym->name, NULL) |
2233 | || !gfc_add_function (&sym->attr, sym->name, NULL))) | |
4ee9c684 | 2234 | return MATCH_ERROR; |
2235 | ||
126387b5 | 2236 | *result = gfc_get_null_expr (&gfc_current_locus); |
4ee9c684 | 2237 | |
f9d34e9a | 2238 | /* Invalid per F2008, C512. */ |
2239 | if (m2 == MATCH_YES) | |
2240 | { | |
2241 | gfc_error ("NULL() initialization at %C may not have MOLD"); | |
2242 | return MATCH_ERROR; | |
2243 | } | |
2244 | ||
4ee9c684 | 2245 | return MATCH_YES; |
2246 | } | |
2247 | ||
2248 | ||
23d075f4 | 2249 | /* Match the initialization expr for a data pointer or procedure pointer. */ |
2250 | ||
2251 | static match | |
2252 | match_pointer_init (gfc_expr **init, int procptr) | |
2253 | { | |
2254 | match m; | |
2255 | ||
d7cd448a | 2256 | if (gfc_pure (NULL) && !gfc_comp_struct (gfc_state_stack->state)) |
23d075f4 | 2257 | { |
2258 | gfc_error ("Initialization of pointer at %C is not allowed in " | |
2259 | "a PURE procedure"); | |
2260 | return MATCH_ERROR; | |
2261 | } | |
c77badf3 | 2262 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
23d075f4 | 2263 | |
df084314 | 2264 | /* Match NULL() initialization. */ |
23d075f4 | 2265 | m = gfc_match_null (init); |
2266 | if (m != MATCH_NO) | |
2267 | return m; | |
2268 | ||
2269 | /* Match non-NULL initialization. */ | |
f3efaada | 2270 | gfc_matching_ptr_assignment = !procptr; |
23d075f4 | 2271 | gfc_matching_procptr_assignment = procptr; |
2272 | m = gfc_match_rvalue (init); | |
f3efaada | 2273 | gfc_matching_ptr_assignment = 0; |
23d075f4 | 2274 | gfc_matching_procptr_assignment = 0; |
2275 | if (m == MATCH_ERROR) | |
2276 | return MATCH_ERROR; | |
2277 | else if (m == MATCH_NO) | |
2278 | { | |
2279 | gfc_error ("Error in pointer initialization at %C"); | |
2280 | return MATCH_ERROR; | |
2281 | } | |
2282 | ||
7c94d8e5 | 2283 | if (!procptr && !gfc_resolve_expr (*init)) |
2284 | return MATCH_ERROR; | |
8db94b3b | 2285 | |
60e19868 | 2286 | if (!gfc_notify_std (GFC_STD_F2008, "non-NULL pointer " |
2287 | "initialization at %C")) | |
23d075f4 | 2288 | return MATCH_ERROR; |
2289 | ||
2290 | return MATCH_YES; | |
2291 | } | |
2292 | ||
2293 | ||
60e19868 | 2294 | static bool |
f3e89339 | 2295 | check_function_name (char *name) |
2296 | { | |
2297 | /* In functions that have a RESULT variable defined, the function name always | |
2298 | refers to function calls. Therefore, the name is not allowed to appear in | |
2299 | specification statements. When checking this, be careful about | |
2300 | 'hidden' procedure pointer results ('ppr@'). */ | |
2301 | ||
2302 | if (gfc_current_state () == COMP_FUNCTION) | |
2303 | { | |
2304 | gfc_symbol *block = gfc_current_block (); | |
2305 | if (block && block->result && block->result != block | |
2306 | && strcmp (block->result->name, "ppr@") != 0 | |
2307 | && strcmp (block->name, name) == 0) | |
2308 | { | |
2c6ca8fc | 2309 | gfc_error ("RESULT variable %qs at %L prohibits FUNCTION name %qs at %C " |
2310 | "from appearing in a specification statement", | |
2311 | block->result->name, &block->result->declared_at, name); | |
60e19868 | 2312 | return false; |
f3e89339 | 2313 | } |
2314 | } | |
2315 | ||
60e19868 | 2316 | return true; |
f3e89339 | 2317 | } |
2318 | ||
2319 | ||
4ee9c684 | 2320 | /* Match a variable name with an optional initializer. When this |
2321 | subroutine is called, a variable is expected to be parsed next. | |
2322 | Depending on what is happening at the moment, updates either the | |
2323 | symbol table or the current interface. */ | |
2324 | ||
2325 | static match | |
3923b69f | 2326 | variable_decl (int elem) |
4ee9c684 | 2327 | { |
2328 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8ef2cf76 | 2329 | static unsigned int fill_id = 0; |
4ee9c684 | 2330 | gfc_expr *initializer, *char_len; |
2331 | gfc_array_spec *as; | |
b549d2a5 | 2332 | gfc_array_spec *cp_as; /* Extra copy for Cray Pointees. */ |
4ee9c684 | 2333 | gfc_charlen *cl; |
3e715c81 | 2334 | bool cl_deferred; |
4ee9c684 | 2335 | locus var_locus; |
2336 | match m; | |
60e19868 | 2337 | bool t; |
b549d2a5 | 2338 | gfc_symbol *sym; |
4ee9c684 | 2339 | |
2340 | initializer = NULL; | |
2341 | as = NULL; | |
b549d2a5 | 2342 | cp_as = NULL; |
4ee9c684 | 2343 | |
2344 | /* When we get here, we've just matched a list of attributes and | |
2345 | maybe a type and a double colon. The next thing we expect to see | |
2346 | is the name of the symbol. */ | |
8ef2cf76 | 2347 | |
2348 | /* If we are parsing a structure with legacy support, we allow the symbol | |
2349 | name to be '%FILL' which gives it an anonymous (inaccessible) name. */ | |
2350 | m = MATCH_NO; | |
2351 | gfc_gobble_whitespace (); | |
2352 | if (gfc_peek_ascii_char () == '%') | |
2353 | { | |
2354 | gfc_next_ascii_char (); | |
2355 | m = gfc_match ("fill"); | |
2356 | } | |
2357 | ||
4ee9c684 | 2358 | if (m != MATCH_YES) |
8ef2cf76 | 2359 | { |
2360 | m = gfc_match_name (name); | |
2361 | if (m != MATCH_YES) | |
2362 | goto cleanup; | |
2363 | } | |
2364 | ||
2365 | else | |
2366 | { | |
2367 | m = MATCH_ERROR; | |
2368 | if (gfc_current_state () != COMP_STRUCTURE) | |
2369 | { | |
2370 | if (flag_dec_structure) | |
2371 | gfc_error ("%qs not allowed outside STRUCTURE at %C", "%FILL"); | |
2372 | else | |
2373 | gfc_error ("%qs at %C is a DEC extension, enable with " | |
2374 | "%<-fdec-structure%>", "%FILL"); | |
2375 | goto cleanup; | |
2376 | } | |
2377 | ||
2378 | if (attr_seen) | |
2379 | { | |
2380 | gfc_error ("%qs entity cannot have attributes at %C", "%FILL"); | |
2381 | goto cleanup; | |
2382 | } | |
2383 | ||
2384 | /* %FILL components are given invalid fortran names. */ | |
2385 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "%%FILL%u", fill_id++); | |
2386 | m = MATCH_YES; | |
2387 | } | |
4ee9c684 | 2388 | |
cbb9e6aa | 2389 | var_locus = gfc_current_locus; |
4ee9c684 | 2390 | |
2391 | /* Now we could see the optional array spec. or character length. */ | |
aff518b0 | 2392 | m = gfc_match_array_spec (&as, true, true); |
eae6c6c1 | 2393 | if (m == MATCH_ERROR) |
4ee9c684 | 2394 | goto cleanup; |
3b6a4b41 | 2395 | |
4ee9c684 | 2396 | if (m == MATCH_NO) |
2397 | as = gfc_copy_array_spec (current_as); | |
9b58b4c7 | 2398 | else if (current_as |
60e19868 | 2399 | && !merge_array_spec (current_as, as, true)) |
9b58b4c7 | 2400 | { |
2401 | m = MATCH_ERROR; | |
2402 | goto cleanup; | |
2403 | } | |
4ee9c684 | 2404 | |
829d7a08 | 2405 | if (flag_cray_pointer) |
eae6c6c1 | 2406 | cp_as = gfc_copy_array_spec (as); |
2407 | ||
ae2864a8 | 2408 | /* At this point, we know for sure if the symbol is PARAMETER and can thus |
2409 | determine (and check) whether it can be implied-shape. If it | |
2410 | was parsed as assumed-size, change it because PARAMETERs can not | |
fc386590 | 2411 | be assumed-size. |
2412 | ||
2413 | An explicit-shape-array cannot appear under several conditions. | |
2414 | That check is done here as well. */ | |
ae2864a8 | 2415 | if (as) |
2416 | { | |
2417 | if (as->type == AS_IMPLIED_SHAPE && current_attr.flavor != FL_PARAMETER) | |
2418 | { | |
2419 | m = MATCH_ERROR; | |
716da296 | 2420 | gfc_error ("Non-PARAMETER symbol %qs at %L can't be implied-shape", |
ae2864a8 | 2421 | name, &var_locus); |
2422 | goto cleanup; | |
2423 | } | |
2424 | ||
2425 | if (as->type == AS_ASSUMED_SIZE && as->rank == 1 | |
2426 | && current_attr.flavor == FL_PARAMETER) | |
2427 | as->type = AS_IMPLIED_SHAPE; | |
2428 | ||
2429 | if (as->type == AS_IMPLIED_SHAPE | |
76e207a9 | 2430 | && !gfc_notify_std (GFC_STD_F2008, "Implied-shape array at %L", |
60e19868 | 2431 | &var_locus)) |
ae2864a8 | 2432 | { |
2433 | m = MATCH_ERROR; | |
2434 | goto cleanup; | |
2435 | } | |
fc386590 | 2436 | |
2437 | /* F2018:C830 (R816) An explicit-shape-spec whose bounds are not | |
2438 | constant expressions shall appear only in a subprogram, derived | |
2439 | type definition, BLOCK construct, or interface body. */ | |
2440 | if (as->type == AS_EXPLICIT | |
2441 | && gfc_current_state () != COMP_BLOCK | |
2442 | && gfc_current_state () != COMP_DERIVED | |
2443 | && gfc_current_state () != COMP_FUNCTION | |
2444 | && gfc_current_state () != COMP_INTERFACE | |
2445 | && gfc_current_state () != COMP_SUBROUTINE) | |
2446 | { | |
2447 | gfc_expr *e; | |
2448 | bool not_constant = false; | |
2449 | ||
2450 | for (int i = 0; i < as->rank; i++) | |
2451 | { | |
2452 | e = gfc_copy_expr (as->lower[i]); | |
2453 | gfc_resolve_expr (e); | |
2454 | gfc_simplify_expr (e, 0); | |
2455 | if (e && (e->expr_type != EXPR_CONSTANT)) | |
2456 | { | |
2457 | not_constant = true; | |
2458 | break; | |
2459 | } | |
2460 | gfc_free_expr (e); | |
2461 | ||
2462 | e = gfc_copy_expr (as->upper[i]); | |
2463 | gfc_resolve_expr (e); | |
2464 | gfc_simplify_expr (e, 0); | |
2465 | if (e && (e->expr_type != EXPR_CONSTANT)) | |
2466 | { | |
2467 | not_constant = true; | |
2468 | break; | |
2469 | } | |
2470 | gfc_free_expr (e); | |
2471 | } | |
2472 | ||
2473 | if (not_constant) | |
4bd908ff | 2474 | { |
fc386590 | 2475 | gfc_error ("Explicit shaped array with nonconstant bounds at %C"); |
2476 | m = MATCH_ERROR; | |
2477 | goto cleanup; | |
2478 | } | |
2479 | } | |
09ebadea | 2480 | if (as->type == AS_EXPLICIT) |
2481 | { | |
2482 | for (int i = 0; i < as->rank; i++) | |
2483 | { | |
2484 | gfc_expr *e, *n; | |
2485 | e = as->lower[i]; | |
2486 | if (e->expr_type != EXPR_CONSTANT) | |
2487 | { | |
2488 | n = gfc_copy_expr (e); | |
2489 | gfc_simplify_expr (n, 1); | |
2490 | if (n->expr_type == EXPR_CONSTANT) | |
2491 | gfc_replace_expr (e, n); | |
2492 | else | |
2493 | gfc_free_expr (n); | |
2494 | } | |
2495 | e = as->upper[i]; | |
2496 | if (e->expr_type != EXPR_CONSTANT) | |
2497 | { | |
2498 | n = gfc_copy_expr (e); | |
2499 | gfc_simplify_expr (n, 1); | |
2500 | if (n->expr_type == EXPR_CONSTANT) | |
2501 | gfc_replace_expr (e, n); | |
2502 | else | |
2503 | gfc_free_expr (n); | |
2504 | } | |
2505 | } | |
2506 | } | |
ae2864a8 | 2507 | } |
2508 | ||
4ee9c684 | 2509 | char_len = NULL; |
2510 | cl = NULL; | |
3e715c81 | 2511 | cl_deferred = false; |
4ee9c684 | 2512 | |
2513 | if (current_ts.type == BT_CHARACTER) | |
2514 | { | |
926b8757 | 2515 | switch (match_char_length (&char_len, &cl_deferred, false)) |
4ee9c684 | 2516 | { |
2517 | case MATCH_YES: | |
d270ce52 | 2518 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
4ee9c684 | 2519 | |
2520 | cl->length = char_len; | |
2521 | break; | |
2522 | ||
3923b69f | 2523 | /* Non-constant lengths need to be copied after the first |
04b61f60 | 2524 | element. Also copy assumed lengths. */ |
4ee9c684 | 2525 | case MATCH_NO: |
04b61f60 | 2526 | if (elem > 1 |
eeebe20b | 2527 | && (current_ts.u.cl->length == NULL |
2528 | || current_ts.u.cl->length->expr_type != EXPR_CONSTANT)) | |
3923b69f | 2529 | { |
d270ce52 | 2530 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
eeebe20b | 2531 | cl->length = gfc_copy_expr (current_ts.u.cl->length); |
3923b69f | 2532 | } |
2533 | else | |
eeebe20b | 2534 | cl = current_ts.u.cl; |
3923b69f | 2535 | |
3e715c81 | 2536 | cl_deferred = current_ts.deferred; |
2537 | ||
4ee9c684 | 2538 | break; |
2539 | ||
2540 | case MATCH_ERROR: | |
2541 | goto cleanup; | |
2542 | } | |
2543 | } | |
2544 | ||
4b8eb6ca | 2545 | /* The dummy arguments and result of the abreviated form of MODULE |
2546 | PROCEDUREs, used in SUBMODULES should not be redefined. */ | |
2547 | if (gfc_current_ns->proc_name | |
2548 | && gfc_current_ns->proc_name->abr_modproc_decl) | |
2549 | { | |
2550 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2551 | if (sym != NULL && (sym->attr.dummy || sym->attr.result)) | |
2552 | { | |
2553 | m = MATCH_ERROR; | |
2f7de6c1 | 2554 | gfc_error ("%qs at %C is a redefinition of the declaration " |
4b8eb6ca | 2555 | "in the corresponding interface for MODULE " |
2f7de6c1 | 2556 | "PROCEDURE %qs", sym->name, |
4b8eb6ca | 2557 | gfc_current_ns->proc_name->name); |
2558 | goto cleanup; | |
2559 | } | |
2560 | } | |
2561 | ||
8ef2cf76 | 2562 | /* %FILL components may not have initializers. */ |
ea9e8242 | 2563 | if (gfc_str_startswith (name, "%FILL") && gfc_match_eos () != MATCH_YES) |
8ef2cf76 | 2564 | { |
2565 | gfc_error ("%qs entity cannot have an initializer at %C", "%FILL"); | |
2566 | m = MATCH_ERROR; | |
2567 | goto cleanup; | |
2568 | } | |
2569 | ||
b549d2a5 | 2570 | /* If this symbol has already shown up in a Cray Pointer declaration, |
322680b5 | 2571 | and this is not a component declaration, |
f6d0e37a | 2572 | then we want to set the type & bail out. */ |
d7cd448a | 2573 | if (flag_cray_pointer && !gfc_comp_struct (gfc_current_state ())) |
b549d2a5 | 2574 | { |
2575 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2576 | if (sym != NULL && sym->attr.cray_pointee) | |
2577 | { | |
b549d2a5 | 2578 | m = MATCH_YES; |
4bd908ff | 2579 | if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
2580 | { | |
2581 | m = MATCH_ERROR; | |
2582 | goto cleanup; | |
2583 | } | |
8db94b3b | 2584 | |
b549d2a5 | 2585 | /* Check to see if we have an array specification. */ |
2586 | if (cp_as != NULL) | |
2587 | { | |
2588 | if (sym->as != NULL) | |
2589 | { | |
7698a624 | 2590 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
b549d2a5 | 2591 | gfc_free_array_spec (cp_as); |
2592 | m = MATCH_ERROR; | |
2593 | goto cleanup; | |
2594 | } | |
2595 | else | |
2596 | { | |
60e19868 | 2597 | if (!gfc_set_array_spec (sym, cp_as, &var_locus)) |
b549d2a5 | 2598 | gfc_internal_error ("Couldn't set pointee array spec."); |
e14bee04 | 2599 | |
b549d2a5 | 2600 | /* Fix the array spec. */ |
e14bee04 | 2601 | m = gfc_mod_pointee_as (sym->as); |
b549d2a5 | 2602 | if (m == MATCH_ERROR) |
2603 | goto cleanup; | |
2604 | } | |
e14bee04 | 2605 | } |
b549d2a5 | 2606 | goto cleanup; |
2607 | } | |
2608 | else | |
2609 | { | |
2610 | gfc_free_array_spec (cp_as); | |
2611 | } | |
2612 | } | |
e14bee04 | 2613 | |
1e057e9b | 2614 | /* Procedure pointer as function result. */ |
2615 | if (gfc_current_state () == COMP_FUNCTION | |
2616 | && strcmp ("ppr@", gfc_current_block ()->name) == 0 | |
2617 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) == 0) | |
2618 | strcpy (name, "ppr@"); | |
2619 | ||
2620 | if (gfc_current_state () == COMP_FUNCTION | |
2621 | && strcmp (name, gfc_current_block ()->name) == 0 | |
2622 | && gfc_current_block ()->result | |
2623 | && strcmp ("ppr@", gfc_current_block ()->result->name) == 0) | |
2624 | strcpy (name, "ppr@"); | |
e14bee04 | 2625 | |
4ee9c684 | 2626 | /* OK, we've successfully matched the declaration. Now put the |
2627 | symbol in the current namespace, because it might be used in the | |
fe06c0d5 | 2628 | optional initialization expression for this symbol, e.g. this is |
4ee9c684 | 2629 | perfectly legal: |
2630 | ||
2631 | integer, parameter :: i = huge(i) | |
2632 | ||
2633 | This is only true for parameters or variables of a basic type. | |
2634 | For components of derived types, it is not true, so we don't | |
2635 | create a symbol for those yet. If we fail to create the symbol, | |
2636 | bail out. */ | |
d7cd448a | 2637 | if (!gfc_comp_struct (gfc_current_state ()) |
60e19868 | 2638 | && !build_sym (name, cl, cl_deferred, &as, &var_locus)) |
4ee9c684 | 2639 | { |
b8a51d79 | 2640 | m = MATCH_ERROR; |
2641 | goto cleanup; | |
2642 | } | |
2643 | ||
60e19868 | 2644 | if (!check_function_name (name)) |
4ee9c684 | 2645 | { |
4ee9c684 | 2646 | m = MATCH_ERROR; |
2647 | goto cleanup; | |
2648 | } | |
2649 | ||
b4f45d02 | 2650 | /* We allow old-style initializations of the form |
2651 | integer i /2/, j(4) /3*3, 1/ | |
2652 | (if no colon has been seen). These are different from data | |
2653 | statements in that initializers are only allowed to apply to the | |
2654 | variable immediately preceding, i.e. | |
2655 | integer i, j /1, 2/ | |
2656 | is not allowed. Therefore we have to do some work manually, that | |
cca3db55 | 2657 | could otherwise be left to the matchers for DATA statements. */ |
b4f45d02 | 2658 | |
2659 | if (!colon_seen && gfc_match (" /") == MATCH_YES) | |
2660 | { | |
60e19868 | 2661 | if (!gfc_notify_std (GFC_STD_GNU, "Old-style " |
2662 | "initialization at %C")) | |
b4f45d02 | 2663 | return MATCH_ERROR; |
d7cd448a | 2664 | |
2665 | /* Allow old style initializations for components of STRUCTUREs and MAPs | |
2666 | but not components of derived types. */ | |
d57a1422 | 2667 | else if (gfc_current_state () == COMP_DERIVED) |
2668 | { | |
2669 | gfc_error ("Invalid old style initialization for derived type " | |
2670 | "component at %C"); | |
2671 | m = MATCH_ERROR; | |
2672 | goto cleanup; | |
2673 | } | |
8db94b3b | 2674 | |
d7cd448a | 2675 | /* For structure components, read the initializer as a special |
2676 | expression and let the rest of this function apply the initializer | |
2677 | as usual. */ | |
2678 | else if (gfc_comp_struct (gfc_current_state ())) | |
2679 | { | |
2680 | m = match_clist_expr (&initializer, ¤t_ts, as); | |
2681 | if (m == MATCH_NO) | |
2682 | gfc_error ("Syntax error in old style initialization of %s at %C", | |
2683 | name); | |
2684 | if (m != MATCH_YES) | |
2685 | goto cleanup; | |
2686 | } | |
2687 | ||
2688 | /* Otherwise we treat the old style initialization just like a | |
2689 | DATA declaration for the current variable. */ | |
2690 | else | |
2691 | return match_old_style_init (name); | |
b4f45d02 | 2692 | } |
2693 | ||
4ee9c684 | 2694 | /* The double colon must be present in order to have initializers. |
2695 | Otherwise the statement is ambiguous with an assignment statement. */ | |
2696 | if (colon_seen) | |
2697 | { | |
2698 | if (gfc_match (" =>") == MATCH_YES) | |
2699 | { | |
4ee9c684 | 2700 | if (!current_attr.pointer) |
2701 | { | |
2702 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
2703 | m = MATCH_ERROR; | |
2704 | goto cleanup; | |
2705 | } | |
2706 | ||
23d075f4 | 2707 | m = match_pointer_init (&initializer, 0); |
4ee9c684 | 2708 | if (m != MATCH_YES) |
2709 | goto cleanup; | |
4ee9c684 | 2710 | } |
2711 | else if (gfc_match_char ('=') == MATCH_YES) | |
2712 | { | |
2713 | if (current_attr.pointer) | |
2714 | { | |
0d2b3c9c | 2715 | gfc_error ("Pointer initialization at %C requires %<=>%>, " |
2716 | "not %<=%>"); | |
4ee9c684 | 2717 | m = MATCH_ERROR; |
2718 | goto cleanup; | |
2719 | } | |
2720 | ||
2721 | m = gfc_match_init_expr (&initializer); | |
2722 | if (m == MATCH_NO) | |
2723 | { | |
2724 | gfc_error ("Expected an initialization expression at %C"); | |
2725 | m = MATCH_ERROR; | |
2726 | } | |
2727 | ||
b3a420c5 | 2728 | if (current_attr.flavor != FL_PARAMETER && gfc_pure (NULL) |
d7cd448a | 2729 | && !gfc_comp_struct (gfc_state_stack->state)) |
4ee9c684 | 2730 | { |
1a9745d2 | 2731 | gfc_error ("Initialization of variable at %C is not allowed in " |
2732 | "a PURE procedure"); | |
4ee9c684 | 2733 | m = MATCH_ERROR; |
2734 | } | |
2735 | ||
c77badf3 | 2736 | if (current_attr.flavor != FL_PARAMETER |
d7cd448a | 2737 | && !gfc_comp_struct (gfc_state_stack->state)) |
c77badf3 | 2738 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
2739 | ||
4ee9c684 | 2740 | if (m != MATCH_YES) |
2741 | goto cleanup; | |
2742 | } | |
8ffad0f9 | 2743 | } |
2744 | ||
2294b616 | 2745 | if (initializer != NULL && current_attr.allocatable |
d7cd448a | 2746 | && gfc_comp_struct (gfc_current_state ())) |
2294b616 | 2747 | { |
1a9745d2 | 2748 | gfc_error ("Initialization of allocatable component at %C is not " |
2749 | "allowed"); | |
2294b616 | 2750 | m = MATCH_ERROR; |
2751 | goto cleanup; | |
2752 | } | |
2753 | ||
87a0366f | 2754 | if (gfc_current_state () == COMP_DERIVED |
2755 | && gfc_current_block ()->attr.pdt_template) | |
2756 | { | |
2757 | gfc_symbol *param; | |
2758 | gfc_find_symbol (name, gfc_current_block ()->f2k_derived, | |
2759 | 0, ¶m); | |
2760 | if (!param && (current_attr.pdt_kind || current_attr.pdt_len)) | |
2761 | { | |
2762 | gfc_error ("The component with KIND or LEN attribute at %C does not " | |
2763 | "not appear in the type parameter list at %L", | |
2764 | &gfc_current_block ()->declared_at); | |
2765 | m = MATCH_ERROR; | |
2766 | goto cleanup; | |
2767 | } | |
2768 | else if (param && !(current_attr.pdt_kind || current_attr.pdt_len)) | |
2769 | { | |
2770 | gfc_error ("The component at %C that appears in the type parameter " | |
2771 | "list at %L has neither the KIND nor LEN attribute", | |
2772 | &gfc_current_block ()->declared_at); | |
2773 | m = MATCH_ERROR; | |
2774 | goto cleanup; | |
2775 | } | |
2776 | else if (as && (current_attr.pdt_kind || current_attr.pdt_len)) | |
2777 | { | |
2778 | gfc_error ("The component at %C which is a type parameter must be " | |
2779 | "a scalar"); | |
2780 | m = MATCH_ERROR; | |
2781 | goto cleanup; | |
2782 | } | |
2783 | else if (param && initializer) | |
2784 | param->value = gfc_copy_expr (initializer); | |
2785 | } | |
2786 | ||
d9b3f26b | 2787 | /* Add the initializer. Note that it is fine if initializer is |
4ee9c684 | 2788 | NULL here, because we sometimes also need to check if a |
2789 | declaration *must* have an initialization expression. */ | |
d7cd448a | 2790 | if (!gfc_comp_struct (gfc_current_state ())) |
4ee9c684 | 2791 | t = add_init_expr_to_sym (name, &initializer, &var_locus); |
2792 | else | |
d9b3f26b | 2793 | { |
2294b616 | 2794 | if (current_ts.type == BT_DERIVED |
1a9745d2 | 2795 | && !current_attr.pointer && !initializer) |
d9b3f26b | 2796 | initializer = gfc_default_initializer (¤t_ts); |
2797 | t = build_struct (name, cl, &initializer, &as); | |
d7cd448a | 2798 | |
2799 | /* If we match a nested structure definition we expect to see the | |
2800 | * body even if the variable declarations blow up, so we need to keep | |
2801 | * the structure declaration around. */ | |
2802 | if (gfc_new_block && gfc_new_block->attr.flavor == FL_STRUCT) | |
2803 | gfc_commit_symbol (gfc_new_block); | |
d9b3f26b | 2804 | } |
4ee9c684 | 2805 | |
60e19868 | 2806 | m = (t) ? MATCH_YES : MATCH_ERROR; |
4ee9c684 | 2807 | |
2808 | cleanup: | |
2809 | /* Free stuff up and return. */ | |
2810 | gfc_free_expr (initializer); | |
2811 | gfc_free_array_spec (as); | |
2812 | ||
2813 | return m; | |
2814 | } | |
2815 | ||
2816 | ||
d10f89ee | 2817 | /* Match an extended-f77 "TYPESPEC*bytesize"-style kind specification. |
2818 | This assumes that the byte size is equal to the kind number for | |
2819 | non-COMPLEX types, and equal to twice the kind number for COMPLEX. */ | |
4ee9c684 | 2820 | |
2821 | match | |
1a9745d2 | 2822 | gfc_match_old_kind_spec (gfc_typespec *ts) |
4ee9c684 | 2823 | { |
2824 | match m; | |
3bd3b616 | 2825 | int original_kind; |
4ee9c684 | 2826 | |
2827 | if (gfc_match_char ('*') != MATCH_YES) | |
2828 | return MATCH_NO; | |
2829 | ||
3bd3b616 | 2830 | m = gfc_match_small_literal_int (&ts->kind, NULL); |
4ee9c684 | 2831 | if (m != MATCH_YES) |
2832 | return MATCH_ERROR; | |
2833 | ||
b118a35b | 2834 | original_kind = ts->kind; |
2835 | ||
4ee9c684 | 2836 | /* Massage the kind numbers for complex types. */ |
b118a35b | 2837 | if (ts->type == BT_COMPLEX) |
2838 | { | |
2839 | if (ts->kind % 2) | |
1a9745d2 | 2840 | { |
2841 | gfc_error ("Old-style type declaration %s*%d not supported at %C", | |
2842 | gfc_basic_typename (ts->type), original_kind); | |
2843 | return MATCH_ERROR; | |
2844 | } | |
b118a35b | 2845 | ts->kind /= 2; |
2d76519f | 2846 | |
2847 | } | |
2848 | ||
eb106faf | 2849 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
2d76519f | 2850 | ts->kind = 8; |
2851 | ||
2852 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2853 | { | |
2854 | if (ts->kind == 4) | |
2855 | { | |
eb106faf | 2856 | if (flag_real4_kind == 8) |
2d76519f | 2857 | ts->kind = 8; |
eb106faf | 2858 | if (flag_real4_kind == 10) |
2d76519f | 2859 | ts->kind = 10; |
eb106faf | 2860 | if (flag_real4_kind == 16) |
2d76519f | 2861 | ts->kind = 16; |
2862 | } | |
2863 | ||
2864 | if (ts->kind == 8) | |
2865 | { | |
eb106faf | 2866 | if (flag_real8_kind == 4) |
2d76519f | 2867 | ts->kind = 4; |
eb106faf | 2868 | if (flag_real8_kind == 10) |
2d76519f | 2869 | ts->kind = 10; |
eb106faf | 2870 | if (flag_real8_kind == 16) |
2d76519f | 2871 | ts->kind = 16; |
2872 | } | |
b118a35b | 2873 | } |
4ee9c684 | 2874 | |
f2d4ef3b | 2875 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
4ee9c684 | 2876 | { |
b118a35b | 2877 | gfc_error ("Old-style type declaration %s*%d not supported at %C", |
1a9745d2 | 2878 | gfc_basic_typename (ts->type), original_kind); |
4ee9c684 | 2879 | return MATCH_ERROR; |
2880 | } | |
2881 | ||
76e207a9 | 2882 | if (!gfc_notify_std (GFC_STD_GNU, |
2883 | "Nonstandard type declaration %s*%d at %C", | |
60e19868 | 2884 | gfc_basic_typename(ts->type), original_kind)) |
be7f01a1 | 2885 | return MATCH_ERROR; |
2886 | ||
4ee9c684 | 2887 | return MATCH_YES; |
2888 | } | |
2889 | ||
2890 | ||
2891 | /* Match a kind specification. Since kinds are generally optional, we | |
2892 | usually return MATCH_NO if something goes wrong. If a "kind=" | |
2893 | string is found, then we know we have an error. */ | |
2894 | ||
2895 | match | |
67a51c8e | 2896 | gfc_match_kind_spec (gfc_typespec *ts, bool kind_expr_only) |
4ee9c684 | 2897 | { |
67a51c8e | 2898 | locus where, loc; |
4ee9c684 | 2899 | gfc_expr *e; |
2900 | match m, n; | |
c632ff3d | 2901 | char c; |
4ee9c684 | 2902 | |
2903 | m = MATCH_NO; | |
67a51c8e | 2904 | n = MATCH_YES; |
4ee9c684 | 2905 | e = NULL; |
9d958d5b | 2906 | saved_kind_expr = NULL; |
4ee9c684 | 2907 | |
67a51c8e | 2908 | where = loc = gfc_current_locus; |
2909 | ||
2910 | if (kind_expr_only) | |
2911 | goto kind_expr; | |
4ee9c684 | 2912 | |
2913 | if (gfc_match_char ('(') == MATCH_NO) | |
2914 | return MATCH_NO; | |
2915 | ||
2916 | /* Also gobbles optional text. */ | |
2917 | if (gfc_match (" kind = ") == MATCH_YES) | |
2918 | m = MATCH_ERROR; | |
2919 | ||
67a51c8e | 2920 | loc = gfc_current_locus; |
2921 | ||
2922 | kind_expr: | |
9d958d5b | 2923 | |
4ee9c684 | 2924 | n = gfc_match_init_expr (&e); |
67a51c8e | 2925 | |
9d958d5b | 2926 | if (gfc_derived_parameter_expr (e)) |
2927 | { | |
2928 | ts->kind = 0; | |
2929 | saved_kind_expr = gfc_copy_expr (e); | |
2930 | goto close_brackets; | |
2931 | } | |
2932 | ||
4ee9c684 | 2933 | if (n != MATCH_YES) |
67a51c8e | 2934 | { |
077932f9 | 2935 | if (gfc_matching_function) |
67a51c8e | 2936 | { |
8db94b3b | 2937 | /* The function kind expression might include use associated or |
077932f9 | 2938 | imported parameters and try again after the specification |
2939 | expressions..... */ | |
67a51c8e | 2940 | if (gfc_match_char (')') != MATCH_YES) |
2941 | { | |
2942 | gfc_error ("Missing right parenthesis at %C"); | |
2943 | m = MATCH_ERROR; | |
2944 | goto no_match; | |
2945 | } | |
2946 | ||
2947 | gfc_free_expr (e); | |
67a51c8e | 2948 | gfc_undo_symbols (); |
2949 | return MATCH_YES; | |
2950 | } | |
2951 | else | |
2952 | { | |
2953 | /* ....or else, the match is real. */ | |
2954 | if (n == MATCH_NO) | |
2955 | gfc_error ("Expected initialization expression at %C"); | |
2956 | if (n != MATCH_YES) | |
2957 | return MATCH_ERROR; | |
2958 | } | |
2959 | } | |
4ee9c684 | 2960 | |
2961 | if (e->rank != 0) | |
2962 | { | |
2963 | gfc_error ("Expected scalar initialization expression at %C"); | |
2964 | m = MATCH_ERROR; | |
2965 | goto no_match; | |
2966 | } | |
2967 | ||
dc326dc0 | 2968 | if (gfc_extract_int (e, &ts->kind, 1)) |
4ee9c684 | 2969 | { |
4ee9c684 | 2970 | m = MATCH_ERROR; |
2971 | goto no_match; | |
2972 | } | |
2973 | ||
c5d33754 | 2974 | /* Before throwing away the expression, let's see if we had a |
2975 | C interoperable kind (and store the fact). */ | |
2976 | if (e->ts.is_c_interop == 1) | |
2977 | { | |
df084314 | 2978 | /* Mark this as C interoperable if being declared with one |
c5d33754 | 2979 | of the named constants from iso_c_binding. */ |
2980 | ts->is_c_interop = e->ts.is_iso_c; | |
2981 | ts->f90_type = e->ts.f90_type; | |
41084313 | 2982 | if (e->symtree) |
2983 | ts->interop_kind = e->symtree->n.sym; | |
c5d33754 | 2984 | } |
8db94b3b | 2985 | |
4ee9c684 | 2986 | gfc_free_expr (e); |
2987 | e = NULL; | |
2988 | ||
c5d33754 | 2989 | /* Ignore errors to this point, if we've gotten here. This means |
2990 | we ignore the m=MATCH_ERROR from above. */ | |
f2d4ef3b | 2991 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
4ee9c684 | 2992 | { |
2993 | gfc_error ("Kind %d not supported for type %s at %C", ts->kind, | |
2994 | gfc_basic_typename (ts->type)); | |
c632ff3d | 2995 | gfc_current_locus = where; |
2996 | return MATCH_ERROR; | |
4ee9c684 | 2997 | } |
c632ff3d | 2998 | |
209d3778 | 2999 | /* Warn if, e.g., c_int is used for a REAL variable, but not |
3000 | if, e.g., c_double is used for COMPLEX as the standard | |
3001 | explicitly says that the kind type parameter for complex and real | |
3002 | variable is the same, i.e. c_float == c_float_complex. */ | |
3003 | if (ts->f90_type != BT_UNKNOWN && ts->f90_type != ts->type | |
3004 | && !((ts->f90_type == BT_REAL && ts->type == BT_COMPLEX) | |
3005 | || (ts->f90_type == BT_COMPLEX && ts->type == BT_REAL))) | |
6f521718 | 3006 | gfc_warning_now (0, "C kind type parameter is for type %s but type at %L " |
ded233a6 | 3007 | "is %s", gfc_basic_typename (ts->f90_type), &where, |
3008 | gfc_basic_typename (ts->type)); | |
209d3778 | 3009 | |
9d958d5b | 3010 | close_brackets: |
3011 | ||
c632ff3d | 3012 | gfc_gobble_whitespace (); |
e0be6f02 | 3013 | if ((c = gfc_next_ascii_char ()) != ')' |
3014 | && (ts->type != BT_CHARACTER || c != ',')) | |
4ee9c684 | 3015 | { |
c632ff3d | 3016 | if (ts->type == BT_CHARACTER) |
3017 | gfc_error ("Missing right parenthesis or comma at %C"); | |
3018 | else | |
3019 | gfc_error ("Missing right parenthesis at %C"); | |
67a51c8e | 3020 | m = MATCH_ERROR; |
4ee9c684 | 3021 | } |
c5d33754 | 3022 | else |
3023 | /* All tests passed. */ | |
3024 | m = MATCH_YES; | |
4ee9c684 | 3025 | |
c5d33754 | 3026 | if(m == MATCH_ERROR) |
3027 | gfc_current_locus = where; | |
2d76519f | 3028 | |
eb106faf | 3029 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
2d76519f | 3030 | ts->kind = 8; |
3031 | ||
3032 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
3033 | { | |
3034 | if (ts->kind == 4) | |
3035 | { | |
eb106faf | 3036 | if (flag_real4_kind == 8) |
2d76519f | 3037 | ts->kind = 8; |
eb106faf | 3038 | if (flag_real4_kind == 10) |
2d76519f | 3039 | ts->kind = 10; |
eb106faf | 3040 | if (flag_real4_kind == 16) |
2d76519f | 3041 | ts->kind = 16; |
3042 | } | |
3043 | ||
3044 | if (ts->kind == 8) | |
3045 | { | |
eb106faf | 3046 | if (flag_real8_kind == 4) |
2d76519f | 3047 | ts->kind = 4; |
eb106faf | 3048 | if (flag_real8_kind == 10) |
2d76519f | 3049 | ts->kind = 10; |
eb106faf | 3050 | if (flag_real8_kind == 16) |
2d76519f | 3051 | ts->kind = 16; |
3052 | } | |
3053 | } | |
3054 | ||
c5d33754 | 3055 | /* Return what we know from the test(s). */ |
3056 | return m; | |
4ee9c684 | 3057 | |
3058 | no_match: | |
3059 | gfc_free_expr (e); | |
cbb9e6aa | 3060 | gfc_current_locus = where; |
4ee9c684 | 3061 | return m; |
3062 | } | |
3063 | ||
3064 | ||
33399208 | 3065 | static match |
3066 | match_char_kind (int * kind, int * is_iso_c) | |
3067 | { | |
3068 | locus where; | |
3069 | gfc_expr *e; | |
3070 | match m, n; | |
dc326dc0 | 3071 | bool fail; |
33399208 | 3072 | |
3073 | m = MATCH_NO; | |
3074 | e = NULL; | |
3075 | where = gfc_current_locus; | |
3076 | ||
3077 | n = gfc_match_init_expr (&e); | |
c632ff3d | 3078 | |
077932f9 | 3079 | if (n != MATCH_YES && gfc_matching_function) |
c632ff3d | 3080 | { |
077932f9 | 3081 | /* The expression might include use-associated or imported |
8db94b3b | 3082 | parameters and try again after the specification |
077932f9 | 3083 | expressions. */ |
c632ff3d | 3084 | gfc_free_expr (e); |
c632ff3d | 3085 | gfc_undo_symbols (); |
3086 | return MATCH_YES; | |
3087 | } | |
3088 | ||
33399208 | 3089 | if (n == MATCH_NO) |
3090 | gfc_error ("Expected initialization expression at %C"); | |
3091 | if (n != MATCH_YES) | |
3092 | return MATCH_ERROR; | |
3093 | ||
3094 | if (e->rank != 0) | |
3095 | { | |
3096 | gfc_error ("Expected scalar initialization expression at %C"); | |
3097 | m = MATCH_ERROR; | |
3098 | goto no_match; | |
3099 | } | |
3100 | ||
9f96fdfe | 3101 | if (gfc_derived_parameter_expr (e)) |
3102 | { | |
3103 | saved_kind_expr = e; | |
3104 | *kind = 0; | |
3105 | return MATCH_YES; | |
3106 | } | |
3107 | ||
dc326dc0 | 3108 | fail = gfc_extract_int (e, kind, 1); |
33399208 | 3109 | *is_iso_c = e->ts.is_iso_c; |
dc326dc0 | 3110 | if (fail) |
33399208 | 3111 | { |
33399208 | 3112 | m = MATCH_ERROR; |
3113 | goto no_match; | |
3114 | } | |
3115 | ||
3116 | gfc_free_expr (e); | |
3117 | ||
3118 | /* Ignore errors to this point, if we've gotten here. This means | |
3119 | we ignore the m=MATCH_ERROR from above. */ | |
3120 | if (gfc_validate_kind (BT_CHARACTER, *kind, true) < 0) | |
3121 | { | |
3122 | gfc_error ("Kind %d is not supported for CHARACTER at %C", *kind); | |
3123 | m = MATCH_ERROR; | |
3124 | } | |
3125 | else | |
3126 | /* All tests passed. */ | |
3127 | m = MATCH_YES; | |
3128 | ||
3129 | if (m == MATCH_ERROR) | |
3130 | gfc_current_locus = where; | |
8db94b3b | 3131 | |
33399208 | 3132 | /* Return what we know from the test(s). */ |
3133 | return m; | |
3134 | ||
3135 | no_match: | |
3136 | gfc_free_expr (e); | |
3137 | gfc_current_locus = where; | |
3138 | return m; | |
3139 | } | |
3140 | ||
10f5dcc0 | 3141 | |
4ee9c684 | 3142 | /* Match the various kind/length specifications in a CHARACTER |
3143 | declaration. We don't return MATCH_NO. */ | |
3144 | ||
10f5dcc0 | 3145 | match |
3146 | gfc_match_char_spec (gfc_typespec *ts) | |
4ee9c684 | 3147 | { |
33399208 | 3148 | int kind, seen_length, is_iso_c; |
4ee9c684 | 3149 | gfc_charlen *cl; |
3150 | gfc_expr *len; | |
3151 | match m; | |
3e715c81 | 3152 | bool deferred; |
33399208 | 3153 | |
4ee9c684 | 3154 | len = NULL; |
3155 | seen_length = 0; | |
33399208 | 3156 | kind = 0; |
3157 | is_iso_c = 0; | |
3e715c81 | 3158 | deferred = false; |
4ee9c684 | 3159 | |
3160 | /* Try the old-style specification first. */ | |
3161 | old_char_selector = 0; | |
3162 | ||
926b8757 | 3163 | m = match_char_length (&len, &deferred, true); |
4ee9c684 | 3164 | if (m != MATCH_NO) |
3165 | { | |
3166 | if (m == MATCH_YES) | |
3167 | old_char_selector = 1; | |
3168 | seen_length = 1; | |
3169 | goto done; | |
3170 | } | |
3171 | ||
3172 | m = gfc_match_char ('('); | |
3173 | if (m != MATCH_YES) | |
3174 | { | |
c5d33754 | 3175 | m = MATCH_YES; /* Character without length is a single char. */ |
4ee9c684 | 3176 | goto done; |
3177 | } | |
3178 | ||
c5d33754 | 3179 | /* Try the weird case: ( KIND = <int> [ , LEN = <len-param> ] ). */ |
4ee9c684 | 3180 | if (gfc_match (" kind =") == MATCH_YES) |
3181 | { | |
33399208 | 3182 | m = match_char_kind (&kind, &is_iso_c); |
8db94b3b | 3183 | |
4ee9c684 | 3184 | if (m == MATCH_ERROR) |
3185 | goto done; | |
3186 | if (m == MATCH_NO) | |
3187 | goto syntax; | |
3188 | ||
3189 | if (gfc_match (" , len =") == MATCH_NO) | |
3190 | goto rparen; | |
3191 | ||
3e715c81 | 3192 | m = char_len_param_value (&len, &deferred); |
4ee9c684 | 3193 | if (m == MATCH_NO) |
3194 | goto syntax; | |
3195 | if (m == MATCH_ERROR) | |
3196 | goto done; | |
3197 | seen_length = 1; | |
3198 | ||
3199 | goto rparen; | |
3200 | } | |
3201 | ||
f6d0e37a | 3202 | /* Try to match "LEN = <len-param>" or "LEN = <len-param>, KIND = <int>". */ |
4ee9c684 | 3203 | if (gfc_match (" len =") == MATCH_YES) |
3204 | { | |
3e715c81 | 3205 | m = char_len_param_value (&len, &deferred); |
4ee9c684 | 3206 | if (m == MATCH_NO) |
3207 | goto syntax; | |
3208 | if (m == MATCH_ERROR) | |
3209 | goto done; | |
3210 | seen_length = 1; | |
3211 | ||
3212 | if (gfc_match_char (')') == MATCH_YES) | |
3213 | goto done; | |
3214 | ||
3215 | if (gfc_match (" , kind =") != MATCH_YES) | |
3216 | goto syntax; | |
3217 | ||
33399208 | 3218 | if (match_char_kind (&kind, &is_iso_c) == MATCH_ERROR) |
3219 | goto done; | |
4ee9c684 | 3220 | |
3221 | goto rparen; | |
3222 | } | |
3223 | ||
f6d0e37a | 3224 | /* Try to match ( <len-param> ) or ( <len-param> , [ KIND = ] <int> ). */ |
3e715c81 | 3225 | m = char_len_param_value (&len, &deferred); |
4ee9c684 | 3226 | if (m == MATCH_NO) |
3227 | goto syntax; | |
3228 | if (m == MATCH_ERROR) | |
3229 | goto done; | |
3230 | seen_length = 1; | |
3231 | ||
3232 | m = gfc_match_char (')'); | |
3233 | if (m == MATCH_YES) | |
3234 | goto done; | |
3235 | ||
3236 | if (gfc_match_char (',') != MATCH_YES) | |
3237 | goto syntax; | |
3238 | ||
c5d33754 | 3239 | gfc_match (" kind ="); /* Gobble optional text. */ |
4ee9c684 | 3240 | |
33399208 | 3241 | m = match_char_kind (&kind, &is_iso_c); |
4ee9c684 | 3242 | if (m == MATCH_ERROR) |
3243 | goto done; | |
3244 | if (m == MATCH_NO) | |
3245 | goto syntax; | |
3246 | ||
3247 | rparen: | |
3248 | /* Require a right-paren at this point. */ | |
3249 | m = gfc_match_char (')'); | |
3250 | if (m == MATCH_YES) | |
3251 | goto done; | |
3252 | ||
3253 | syntax: | |
3254 | gfc_error ("Syntax error in CHARACTER declaration at %C"); | |
3255 | m = MATCH_ERROR; | |
a3cbe8cc | 3256 | gfc_free_expr (len); |
3257 | return m; | |
4ee9c684 | 3258 | |
3259 | done: | |
8d39570e | 3260 | /* Deal with character functions after USE and IMPORT statements. */ |
3261 | if (gfc_matching_function) | |
077932f9 | 3262 | { |
8d39570e | 3263 | gfc_free_expr (len); |
077932f9 | 3264 | gfc_undo_symbols (); |
3265 | return MATCH_YES; | |
3266 | } | |
3267 | ||
4ee9c684 | 3268 | if (m != MATCH_YES) |
3269 | { | |
3270 | gfc_free_expr (len); | |
3271 | return m; | |
3272 | } | |
3273 | ||
3274 | /* Do some final massaging of the length values. */ | |
d270ce52 | 3275 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
4ee9c684 | 3276 | |
3277 | if (seen_length == 0) | |
9f4d9f83 | 3278 | cl->length = gfc_get_int_expr (gfc_charlen_int_kind, NULL, 1); |
4ee9c684 | 3279 | else |
91f09922 | 3280 | { |
5efb256e | 3281 | /* If gfortran ends up here, then len may be reducible to a constant. |
3282 | Try to do that here. If it does not reduce, simply assign len to | |
3283 | charlen. A complication occurs with user-defined generic functions, | |
3284 | which are not resolved. Use a private namespace to deal with | |
3285 | generic functions. */ | |
3286 | ||
91f09922 | 3287 | if (len && len->expr_type != EXPR_CONSTANT) |
3288 | { | |
5efb256e | 3289 | gfc_namespace *old_ns; |
91f09922 | 3290 | gfc_expr *e; |
5efb256e | 3291 | |
3292 | old_ns = gfc_current_ns; | |
3293 | gfc_current_ns = gfc_get_namespace (NULL, 0); | |
3294 | ||
91f09922 | 3295 | e = gfc_copy_expr (len); |
3296 | gfc_reduce_init_expr (e); | |
3297 | if (e->expr_type == EXPR_CONSTANT) | |
a3903232 | 3298 | { |
3299 | gfc_replace_expr (len, e); | |
3300 | if (mpz_cmp_si (len->value.integer, 0) < 0) | |
3301 | mpz_set_ui (len->value.integer, 0); | |
3302 | } | |
91f09922 | 3303 | else |
3304 | gfc_free_expr (e); | |
5efb256e | 3305 | |
3306 | gfc_free_namespace (gfc_current_ns); | |
3307 | gfc_current_ns = old_ns; | |
91f09922 | 3308 | } |
5efb256e | 3309 | |
3310 | cl->length = len; | |
91f09922 | 3311 | } |
4ee9c684 | 3312 | |
eeebe20b | 3313 | ts->u.cl = cl; |
33399208 | 3314 | ts->kind = kind == 0 ? gfc_default_character_kind : kind; |
3e715c81 | 3315 | ts->deferred = deferred; |
4ee9c684 | 3316 | |
df084314 | 3317 | /* We have to know if it was a C interoperable kind so we can |
c5d33754 | 3318 | do accurate type checking of bind(c) procs, etc. */ |
33399208 | 3319 | if (kind != 0) |
df084314 | 3320 | /* Mark this as C interoperable if being declared with one |
33399208 | 3321 | of the named constants from iso_c_binding. */ |
3322 | ts->is_c_interop = is_iso_c; | |
c5d33754 | 3323 | else if (len != NULL) |
33399208 | 3324 | /* Here, we might have parsed something such as: character(c_char) |
3325 | In this case, the parsing code above grabs the c_char when | |
3326 | looking for the length (line 1690, roughly). it's the last | |
3327 | testcase for parsing the kind params of a character variable. | |
3328 | However, it's not actually the length. this seems like it | |
8db94b3b | 3329 | could be an error. |
33399208 | 3330 | To see if the user used a C interop kind, test the expr |
3331 | of the so called length, and see if it's C interoperable. */ | |
3332 | ts->is_c_interop = len->ts.is_iso_c; | |
8db94b3b | 3333 | |
4ee9c684 | 3334 | return MATCH_YES; |
3335 | } | |
3336 | ||
3337 | ||
d7cd448a | 3338 | /* Matches a RECORD declaration. */ |
3339 | ||
3340 | static match | |
891196d7 | 3341 | match_record_decl (char *name) |
d7cd448a | 3342 | { |
3343 | locus old_loc; | |
3344 | old_loc = gfc_current_locus; | |
891196d7 | 3345 | match m; |
d7cd448a | 3346 | |
891196d7 | 3347 | m = gfc_match (" record /"); |
3348 | if (m == MATCH_YES) | |
d7cd448a | 3349 | { |
cf078427 | 3350 | if (!flag_dec_structure) |
d7cd448a | 3351 | { |
3352 | gfc_current_locus = old_loc; | |
3353 | gfc_error ("RECORD at %C is an extension, enable it with " | |
3354 | "-fdec-structure"); | |
3355 | return MATCH_ERROR; | |
3356 | } | |
891196d7 | 3357 | m = gfc_match (" %n/", name); |
3358 | if (m == MATCH_YES) | |
3359 | return MATCH_YES; | |
d7cd448a | 3360 | } |
3361 | ||
891196d7 | 3362 | gfc_current_locus = old_loc; |
cf078427 | 3363 | if (flag_dec_structure |
891196d7 | 3364 | && (gfc_match (" record% ") == MATCH_YES |
3365 | || gfc_match (" record%t") == MATCH_YES)) | |
3366 | gfc_error ("Structure name expected after RECORD at %C"); | |
3367 | if (m == MATCH_NO) | |
d7cd448a | 3368 | return MATCH_NO; |
891196d7 | 3369 | |
3370 | return MATCH_ERROR; | |
d7cd448a | 3371 | } |
3372 | ||
9d958d5b | 3373 | |
3374 | /* This function uses the gfc_actual_arglist 'type_param_spec_list' as a source | |
3375 | of expressions to substitute into the possibly parameterized expression | |
3376 | 'e'. Using a list is inefficient but should not be too bad since the | |
3377 | number of type parameters is not likely to be large. */ | |
3378 | static bool | |
3379 | insert_parameter_exprs (gfc_expr* e, gfc_symbol* sym ATTRIBUTE_UNUSED, | |
3380 | int* f) | |
3381 | { | |
3382 | gfc_actual_arglist *param; | |
3383 | gfc_expr *copy; | |
3384 | ||
3385 | if (e->expr_type != EXPR_VARIABLE) | |
3386 | return false; | |
3387 | ||
3388 | gcc_assert (e->symtree); | |
3389 | if (e->symtree->n.sym->attr.pdt_kind | |
3390 | || (*f != 0 && e->symtree->n.sym->attr.pdt_len)) | |
3391 | { | |
3392 | for (param = type_param_spec_list; param; param = param->next) | |
3393 | if (strcmp (e->symtree->n.sym->name, param->name) == 0) | |
3394 | break; | |
3395 | ||
3396 | if (param) | |
3397 | { | |
3398 | copy = gfc_copy_expr (param->expr); | |
3399 | *e = *copy; | |
3400 | free (copy); | |
3401 | } | |
3402 | } | |
3403 | ||
3404 | return false; | |
3405 | } | |
3406 | ||
3407 | ||
3408 | bool | |
3409 | gfc_insert_kind_parameter_exprs (gfc_expr *e) | |
3410 | { | |
3411 | return gfc_traverse_expr (e, NULL, &insert_parameter_exprs, 0); | |
3412 | } | |
3413 | ||
3414 | ||
3415 | bool | |
3416 | gfc_insert_parameter_exprs (gfc_expr *e, gfc_actual_arglist *param_list) | |
3417 | { | |
3418 | gfc_actual_arglist *old_param_spec_list = type_param_spec_list; | |
3419 | type_param_spec_list = param_list; | |
3420 | return gfc_traverse_expr (e, NULL, &insert_parameter_exprs, 1); | |
3421 | type_param_spec_list = NULL; | |
3422 | type_param_spec_list = old_param_spec_list; | |
3423 | } | |
3424 | ||
3425 | /* Determines the instance of a parameterized derived type to be used by | |
3426 | matching determining the values of the kind parameters and using them | |
3427 | in the name of the instance. If the instance exists, it is used, otherwise | |
3428 | a new derived type is created. */ | |
3429 | match | |
3430 | gfc_get_pdt_instance (gfc_actual_arglist *param_list, gfc_symbol **sym, | |
3431 | gfc_actual_arglist **ext_param_list) | |
3432 | { | |
3433 | /* The PDT template symbol. */ | |
3434 | gfc_symbol *pdt = *sym; | |
3435 | /* The symbol for the parameter in the template f2k_namespace. */ | |
3436 | gfc_symbol *param; | |
3437 | /* The hoped for instance of the PDT. */ | |
3438 | gfc_symbol *instance; | |
3439 | /* The list of parameters appearing in the PDT declaration. */ | |
3440 | gfc_formal_arglist *type_param_name_list; | |
3441 | /* Used to store the parameter specification list during recursive calls. */ | |
3442 | gfc_actual_arglist *old_param_spec_list; | |
3443 | /* Pointers to the parameter specification being used. */ | |
3444 | gfc_actual_arglist *actual_param; | |
3445 | gfc_actual_arglist *tail = NULL; | |
3446 | /* Used to build up the name of the PDT instance. The prefix uses 4 | |
3447 | characters and each KIND parameter 2 more. Allow 8 of the latter. */ | |
3448 | char name[GFC_MAX_SYMBOL_LEN + 21]; | |
3449 | ||
3450 | bool name_seen = (param_list == NULL); | |
3451 | bool assumed_seen = false; | |
3452 | bool deferred_seen = false; | |
3453 | bool spec_error = false; | |
3454 | int kind_value, i; | |
3455 | gfc_expr *kind_expr; | |
3456 | gfc_component *c1, *c2; | |
3457 | match m; | |
3458 | ||
3459 | type_param_spec_list = NULL; | |
3460 | ||
3461 | type_param_name_list = pdt->formal; | |
3462 | actual_param = param_list; | |
3463 | sprintf (name, "Pdt%s", pdt->name); | |
3464 | ||
3465 | /* Run through the parameter name list and pick up the actual | |
3466 | parameter values or use the default values in the PDT declaration. */ | |
3467 | for (; type_param_name_list; | |
3468 | type_param_name_list = type_param_name_list->next) | |
3469 | { | |
3470 | if (actual_param && actual_param->spec_type != SPEC_EXPLICIT) | |
3471 | { | |
3472 | if (actual_param->spec_type == SPEC_ASSUMED) | |
3473 | spec_error = deferred_seen; | |
3474 | else | |
3475 | spec_error = assumed_seen; | |
3476 | ||
3477 | if (spec_error) | |
3478 | { | |
3479 | gfc_error ("The type parameter spec list at %C cannot contain " | |
3480 | "both ASSUMED and DEFERRED parameters"); | |
87a0366f | 3481 | goto error_return; |
9d958d5b | 3482 | } |
3483 | } | |
3484 | ||
3485 | if (actual_param && actual_param->name) | |
3486 | name_seen = true; | |
3487 | param = type_param_name_list->sym; | |
3488 | ||
f0efd2e8 | 3489 | if (!param || !param->name) |
3490 | continue; | |
3491 | ||
87a0366f | 3492 | c1 = gfc_find_component (pdt, param->name, false, true, NULL); |
1148eb54 | 3493 | /* An error should already have been thrown in resolve.c |
3494 | (resolve_fl_derived0). */ | |
87a0366f | 3495 | if (!pdt->attr.use_assoc && !c1) |
1148eb54 | 3496 | goto error_return; |
87a0366f | 3497 | |
9d958d5b | 3498 | kind_expr = NULL; |
3499 | if (!name_seen) | |
3500 | { | |
87a0366f | 3501 | if (!actual_param && !(c1 && c1->initializer)) |
3502 | { | |
3503 | gfc_error ("The type parameter spec list at %C does not contain " | |
3504 | "enough parameter expressions"); | |
3505 | goto error_return; | |
3506 | } | |
3507 | else if (!actual_param && c1 && c1->initializer) | |
3508 | kind_expr = gfc_copy_expr (c1->initializer); | |
3509 | else if (actual_param && actual_param->spec_type == SPEC_EXPLICIT) | |
9d958d5b | 3510 | kind_expr = gfc_copy_expr (actual_param->expr); |
3511 | } | |
3512 | else | |
3513 | { | |
3514 | actual_param = param_list; | |
3515 | for (;actual_param; actual_param = actual_param->next) | |
3516 | if (actual_param->name | |
3517 | && strcmp (actual_param->name, param->name) == 0) | |
3518 | break; | |
3519 | if (actual_param && actual_param->spec_type == SPEC_EXPLICIT) | |
3520 | kind_expr = gfc_copy_expr (actual_param->expr); | |
3521 | else | |
3522 | { | |
dba5ed0d | 3523 | if (c1->initializer) |
3524 | kind_expr = gfc_copy_expr (c1->initializer); | |
9d958d5b | 3525 | else if (!(actual_param && param->attr.pdt_len)) |
3526 | { | |
4b8290f8 | 3527 | gfc_error ("The derived parameter %qs at %C does not " |
9d958d5b | 3528 | "have a default value", param->name); |
87a0366f | 3529 | goto error_return; |
9d958d5b | 3530 | } |
3531 | } | |
3532 | } | |
3533 | ||
3534 | /* Store the current parameter expressions in a temporary actual | |
3535 | arglist 'list' so that they can be substituted in the corresponding | |
3536 | expressions in the PDT instance. */ | |
3537 | if (type_param_spec_list == NULL) | |
3538 | { | |
3539 | type_param_spec_list = gfc_get_actual_arglist (); | |
3540 | tail = type_param_spec_list; | |
3541 | } | |
3542 | else | |
3543 | { | |
3544 | tail->next = gfc_get_actual_arglist (); | |
3545 | tail = tail->next; | |
3546 | } | |
3547 | tail->name = param->name; | |
3548 | ||
3549 | if (kind_expr) | |
3550 | { | |
9f96fdfe | 3551 | /* Try simplification even for LEN expressions. */ |
3552 | gfc_resolve_expr (kind_expr); | |
3553 | gfc_simplify_expr (kind_expr, 1); | |
87a0366f | 3554 | /* Variable expressions seem to default to BT_PROCEDURE. |
3555 | TODO find out why this is and fix it. */ | |
3556 | if (kind_expr->ts.type != BT_INTEGER | |
3557 | && kind_expr->ts.type != BT_PROCEDURE) | |
3558 | { | |
3559 | gfc_error ("The parameter expression at %C must be of " | |
3560 | "INTEGER type and not %s type", | |
3561 | gfc_basic_typename (kind_expr->ts.type)); | |
3562 | goto error_return; | |
3563 | } | |
3564 | ||
9d958d5b | 3565 | tail->expr = gfc_copy_expr (kind_expr); |
9d958d5b | 3566 | } |
3567 | ||
3568 | if (actual_param) | |
3569 | tail->spec_type = actual_param->spec_type; | |
3570 | ||
3571 | if (!param->attr.pdt_kind) | |
3572 | { | |
87a0366f | 3573 | if (!name_seen && actual_param) |
9d958d5b | 3574 | actual_param = actual_param->next; |
3575 | if (kind_expr) | |
3576 | { | |
3577 | gfc_free_expr (kind_expr); | |
3578 | kind_expr = NULL; | |
3579 | } | |
3580 | continue; | |
3581 | } | |
3582 | ||
3583 | if (actual_param | |
3584 | && (actual_param->spec_type == SPEC_ASSUMED | |
3585 | || actual_param->spec_type == SPEC_DEFERRED)) | |
3586 | { | |
4b8290f8 | 3587 | gfc_error ("The KIND parameter %qs at %C cannot either be " |
9d958d5b | 3588 | "ASSUMED or DEFERRED", param->name); |
87a0366f | 3589 | goto error_return; |
9d958d5b | 3590 | } |
3591 | ||
3592 | if (!kind_expr || !gfc_is_constant_expr (kind_expr)) | |
3593 | { | |
4b8290f8 | 3594 | gfc_error ("The value for the KIND parameter %qs at %C does not " |
9d958d5b | 3595 | "reduce to a constant expression", param->name); |
87a0366f | 3596 | goto error_return; |
9d958d5b | 3597 | } |
3598 | ||
3599 | gfc_extract_int (kind_expr, &kind_value); | |
e9366ef9 | 3600 | sprintf (name + strlen (name), "_%d", kind_value); |
9d958d5b | 3601 | |
3602 | if (!name_seen && actual_param) | |
3603 | actual_param = actual_param->next; | |
3604 | gfc_free_expr (kind_expr); | |
3605 | } | |
3606 | ||
87a0366f | 3607 | if (!name_seen && actual_param) |
3608 | { | |
3609 | gfc_error ("The type parameter spec list at %C contains too many " | |
3610 | "parameter expressions"); | |
3611 | goto error_return; | |
3612 | } | |
3613 | ||
9d958d5b | 3614 | /* Now we search for the PDT instance 'name'. If it doesn't exist, we |
3615 | build it, using 'pdt' as a template. */ | |
3616 | if (gfc_get_symbol (name, pdt->ns, &instance)) | |
3617 | { | |
3618 | gfc_error ("Parameterized derived type at %C is ambiguous"); | |
87a0366f | 3619 | goto error_return; |
9d958d5b | 3620 | } |
3621 | ||
3622 | m = MATCH_YES; | |
3623 | ||
3624 | if (instance->attr.flavor == FL_DERIVED | |
3625 | && instance->attr.pdt_type) | |
3626 | { | |
3627 | instance->refs++; | |
3628 | if (ext_param_list) | |
3629 | *ext_param_list = type_param_spec_list; | |
3630 | *sym = instance; | |
3631 | gfc_commit_symbols (); | |
3632 | return m; | |
3633 | } | |
3634 | ||
3635 | /* Start building the new instance of the parameterized type. */ | |
3636 | gfc_copy_attr (&instance->attr, &pdt->attr, &pdt->declared_at); | |
3637 | instance->attr.pdt_template = 0; | |
3638 | instance->attr.pdt_type = 1; | |
3639 | instance->declared_at = gfc_current_locus; | |
3640 | ||
3641 | /* Add the components, replacing the parameters in all expressions | |
3642 | with the expressions for their values in 'type_param_spec_list'. */ | |
3643 | c1 = pdt->components; | |
3644 | tail = type_param_spec_list; | |
3645 | for (; c1; c1 = c1->next) | |
3646 | { | |
3647 | gfc_add_component (instance, c1->name, &c2); | |
f0efd2e8 | 3648 | |
9d958d5b | 3649 | c2->ts = c1->ts; |
3650 | c2->attr = c1->attr; | |
3651 | ||
f0efd2e8 | 3652 | /* The order of declaration of the type_specs might not be the |
3653 | same as that of the components. */ | |
3654 | if (c1->attr.pdt_kind || c1->attr.pdt_len) | |
3655 | { | |
3656 | for (tail = type_param_spec_list; tail; tail = tail->next) | |
3657 | if (strcmp (c1->name, tail->name) == 0) | |
3658 | break; | |
3659 | } | |
3660 | ||
9d958d5b | 3661 | /* Deal with type extension by recursively calling this function |
3662 | to obtain the instance of the extended type. */ | |
3663 | if (gfc_current_state () != COMP_DERIVED | |
3664 | && c1 == pdt->components | |
3665 | && (c1->ts.type == BT_DERIVED || c1->ts.type == BT_CLASS) | |
3666 | && c1->ts.u.derived && c1->ts.u.derived->attr.pdt_template | |
3667 | && gfc_get_derived_super_type (*sym) == c2->ts.u.derived) | |
3668 | { | |
3669 | gfc_formal_arglist *f; | |
3670 | ||
3671 | old_param_spec_list = type_param_spec_list; | |
3672 | ||
3673 | /* Obtain a spec list appropriate to the extended type..*/ | |
3674 | actual_param = gfc_copy_actual_arglist (type_param_spec_list); | |
3675 | type_param_spec_list = actual_param; | |
3676 | for (f = c1->ts.u.derived->formal; f && f->next; f = f->next) | |
3677 | actual_param = actual_param->next; | |
3678 | if (actual_param) | |
3679 | { | |
3680 | gfc_free_actual_arglist (actual_param->next); | |
3681 | actual_param->next = NULL; | |
3682 | } | |
3683 | ||
3684 | /* Now obtain the PDT instance for the extended type. */ | |
3685 | c2->param_list = type_param_spec_list; | |
3686 | m = gfc_get_pdt_instance (type_param_spec_list, &c2->ts.u.derived, | |
3687 | NULL); | |
3688 | type_param_spec_list = old_param_spec_list; | |
3689 | ||
3690 | c2->ts.u.derived->refs++; | |
3691 | gfc_set_sym_referenced (c2->ts.u.derived); | |
3692 | ||
3693 | /* Set extension level. */ | |
3694 | if (c2->ts.u.derived->attr.extension == 255) | |
3695 | { | |
3696 | /* Since the extension field is 8 bit wide, we can only have | |
3697 | up to 255 extension levels. */ | |
3698 | gfc_error ("Maximum extension level reached with type %qs at %L", | |
3699 | c2->ts.u.derived->name, | |
3700 | &c2->ts.u.derived->declared_at); | |
87a0366f | 3701 | goto error_return; |
9d958d5b | 3702 | } |
3703 | instance->attr.extension = c2->ts.u.derived->attr.extension + 1; | |
3704 | ||
9d958d5b | 3705 | continue; |
3706 | } | |
3707 | ||
3708 | /* Set the component kind using the parameterized expression. */ | |
f0efd2e8 | 3709 | if ((c1->ts.kind == 0 || c1->ts.type == BT_CHARACTER) |
3710 | && c1->kind_expr != NULL) | |
9d958d5b | 3711 | { |
3712 | gfc_expr *e = gfc_copy_expr (c1->kind_expr); | |
3713 | gfc_insert_kind_parameter_exprs (e); | |
9f96fdfe | 3714 | gfc_simplify_expr (e, 1); |
9d958d5b | 3715 | gfc_extract_int (e, &c2->ts.kind); |
3716 | gfc_free_expr (e); | |
87a0366f | 3717 | if (gfc_validate_kind (c2->ts.type, c2->ts.kind, true) < 0) |
3718 | { | |
3719 | gfc_error ("Kind %d not supported for type %s at %C", | |
3720 | c2->ts.kind, gfc_basic_typename (c2->ts.type)); | |
3721 | goto error_return; | |
3722 | } | |
9d958d5b | 3723 | } |
3724 | ||
3725 | /* Similarly, set the string length if parameterized. */ | |
3726 | if (c1->ts.type == BT_CHARACTER | |
3727 | && c1->ts.u.cl->length | |
3728 | && gfc_derived_parameter_expr (c1->ts.u.cl->length)) | |
3729 | { | |
3730 | gfc_expr *e; | |
3731 | e = gfc_copy_expr (c1->ts.u.cl->length); | |
3732 | gfc_insert_kind_parameter_exprs (e); | |
3733 | gfc_simplify_expr (e, 1); | |
3734 | c2->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); | |
3735 | c2->ts.u.cl->length = e; | |
3736 | c2->attr.pdt_string = 1; | |
3737 | } | |
3738 | ||
3739 | /* Set up either the KIND/LEN initializer, if constant, | |
3740 | or the parameterized expression. Use the template | |
3741 | initializer if one is not already set in this instance. */ | |
3742 | if (c2->attr.pdt_kind || c2->attr.pdt_len) | |
3743 | { | |
3744 | if (tail && tail->expr && gfc_is_constant_expr (tail->expr)) | |
3745 | c2->initializer = gfc_copy_expr (tail->expr); | |
3746 | else if (tail && tail->expr) | |
3747 | { | |
3748 | c2->param_list = gfc_get_actual_arglist (); | |
3749 | c2->param_list->name = tail->name; | |
3750 | c2->param_list->expr = gfc_copy_expr (tail->expr); | |
3751 | c2->param_list->next = NULL; | |
3752 | } | |
3753 | ||
3754 | if (!c2->initializer && c1->initializer) | |
3755 | c2->initializer = gfc_copy_expr (c1->initializer); | |
9d958d5b | 3756 | } |
3757 | ||
3758 | /* Copy the array spec. */ | |
3759 | c2->as = gfc_copy_array_spec (c1->as); | |
3760 | if (c1->ts.type == BT_CLASS) | |
3761 | CLASS_DATA (c2)->as = gfc_copy_array_spec (CLASS_DATA (c1)->as); | |
3762 | ||
3763 | /* Determine if an array spec is parameterized. If so, substitute | |
3764 | in the parameter expressions for the bounds and set the pdt_array | |
3765 | attribute. Notice that this attribute must be unconditionally set | |
3766 | if this is an array of parameterized character length. */ | |
3767 | if (c1->as && c1->as->type == AS_EXPLICIT) | |
3768 | { | |
3769 | bool pdt_array = false; | |
3770 | ||
3771 | /* Are the bounds of the array parameterized? */ | |
3772 | for (i = 0; i < c1->as->rank; i++) | |
3773 | { | |
3774 | if (gfc_derived_parameter_expr (c1->as->lower[i])) | |
3775 | pdt_array = true; | |
3776 | if (gfc_derived_parameter_expr (c1->as->upper[i])) | |
3777 | pdt_array = true; | |
3778 | } | |
3779 | ||
3780 | /* If they are, free the expressions for the bounds and | |
3781 | replace them with the template expressions with substitute | |
3782 | values. */ | |
3783 | for (i = 0; pdt_array && i < c1->as->rank; i++) | |
3784 | { | |
3785 | gfc_expr *e; | |
3786 | e = gfc_copy_expr (c1->as->lower[i]); | |
3787 | gfc_insert_kind_parameter_exprs (e); | |
3788 | gfc_simplify_expr (e, 1); | |
3789 | gfc_free_expr (c2->as->lower[i]); | |
3790 | c2->as->lower[i] = e; | |
3791 | e = gfc_copy_expr (c1->as->upper[i]); | |
3792 | gfc_insert_kind_parameter_exprs (e); | |
3793 | gfc_simplify_expr (e, 1); | |
3794 | gfc_free_expr (c2->as->upper[i]); | |
3795 | c2->as->upper[i] = e; | |
3796 | } | |
3797 | c2->attr.pdt_array = pdt_array ? 1 : c2->attr.pdt_string; | |
8534bf8a | 3798 | if (c1->initializer) |
3799 | { | |
3800 | c2->initializer = gfc_copy_expr (c1->initializer); | |
3801 | gfc_insert_kind_parameter_exprs (c2->initializer); | |
3802 | gfc_simplify_expr (c2->initializer, 1); | |
3803 | } | |
9d958d5b | 3804 | } |
3805 | ||
3806 | /* Recurse into this function for PDT components. */ | |
3807 | if ((c1->ts.type == BT_DERIVED || c1->ts.type == BT_CLASS) | |
3808 | && c1->ts.u.derived && c1->ts.u.derived->attr.pdt_template) | |
3809 | { | |
3810 | gfc_actual_arglist *params; | |
3811 | /* The component in the template has a list of specification | |
3812 | expressions derived from its declaration. */ | |
3813 | params = gfc_copy_actual_arglist (c1->param_list); | |
3814 | actual_param = params; | |
3815 | /* Substitute the template parameters with the expressions | |
3816 | from the specification list. */ | |
3817 | for (;actual_param; actual_param = actual_param->next) | |
3818 | gfc_insert_parameter_exprs (actual_param->expr, | |
3819 | type_param_spec_list); | |
3820 | ||
3821 | /* Now obtain the PDT instance for the component. */ | |
3822 | old_param_spec_list = type_param_spec_list; | |
3823 | m = gfc_get_pdt_instance (params, &c2->ts.u.derived, NULL); | |
3824 | type_param_spec_list = old_param_spec_list; | |
3825 | ||
3826 | c2->param_list = params; | |
d11013dc | 3827 | if (!(c2->attr.pointer || c2->attr.allocatable)) |
3828 | c2->initializer = gfc_default_initializer (&c2->ts); | |
3829 | ||
3830 | if (c2->attr.allocatable) | |
3831 | instance->attr.alloc_comp = 1; | |
9d958d5b | 3832 | } |
3833 | } | |
3834 | ||
3835 | gfc_commit_symbol (instance); | |
3836 | if (ext_param_list) | |
3837 | *ext_param_list = type_param_spec_list; | |
3838 | *sym = instance; | |
3839 | return m; | |
87a0366f | 3840 | |
3841 | error_return: | |
3842 | gfc_free_actual_arglist (type_param_spec_list); | |
3843 | return MATCH_ERROR; | |
9d958d5b | 3844 | } |
3845 | ||
3846 | ||
e8152f13 | 3847 | /* Matches a declaration-type-spec (F03:R502). If successful, sets the ts |
3848 | structure to the matched specification. This is necessary for FUNCTION and | |
4ee9c684 | 3849 | IMPLICIT statements. |
3850 | ||
e14bee04 | 3851 | If implicit_flag is nonzero, then we don't check for the optional |
39351103 | 3852 | kind specification. Not doing so is needed for matching an IMPLICIT |
4ee9c684 | 3853 | statement correctly. */ |
3854 | ||
67a51c8e | 3855 | match |
e8152f13 | 3856 | gfc_match_decl_type_spec (gfc_typespec *ts, int implicit_flag) |
4ee9c684 | 3857 | { |
3858 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c2958b6b | 3859 | gfc_symbol *sym, *dt_sym; |
4ee9c684 | 3860 | match m; |
e0be6f02 | 3861 | char c; |
f446fb22 | 3862 | bool seen_deferred_kind, matched_type; |
c2958b6b | 3863 | const char *dt_name; |
4ee9c684 | 3864 | |
9d958d5b | 3865 | decl_type_param_list = NULL; |
3866 | ||
077932f9 | 3867 | /* A belt and braces check that the typespec is correctly being treated |
3868 | as a deferred characteristic association. */ | |
3869 | seen_deferred_kind = (gfc_current_state () == COMP_FUNCTION) | |
8d39570e | 3870 | && (gfc_current_block ()->result->ts.kind == -1) |
3871 | && (ts->kind == -1); | |
4ee9c684 | 3872 | gfc_clear_ts (ts); |
077932f9 | 3873 | if (seen_deferred_kind) |
3874 | ts->kind = -1; | |
4ee9c684 | 3875 | |
c5d33754 | 3876 | /* Clear the current binding label, in case one is given. */ |
7b2060ba | 3877 | curr_binding_label = NULL; |
c5d33754 | 3878 | |
25b29122 | 3879 | if (gfc_match (" byte") == MATCH_YES) |
3880 | { | |
60e19868 | 3881 | if (!gfc_notify_std (GFC_STD_GNU, "BYTE type at %C")) |
25b29122 | 3882 | return MATCH_ERROR; |
3883 | ||
3884 | if (gfc_validate_kind (BT_INTEGER, 1, true) < 0) | |
3885 | { | |
3886 | gfc_error ("BYTE type used at %C " | |
3887 | "is not available on the target machine"); | |
3888 | return MATCH_ERROR; | |
3889 | } | |
e14bee04 | 3890 | |
25b29122 | 3891 | ts->type = BT_INTEGER; |
3892 | ts->kind = 1; | |
3893 | return MATCH_YES; | |
3894 | } | |
3895 | ||
f446fb22 | 3896 | |
8c2d8d6d | 3897 | m = gfc_match (" type ("); |
f446fb22 | 3898 | matched_type = (m == MATCH_YES); |
8c2d8d6d | 3899 | if (matched_type) |
3900 | { | |
3901 | gfc_gobble_whitespace (); | |
3902 | if (gfc_peek_ascii_char () == '*') | |
3903 | { | |
3904 | if ((m = gfc_match ("*)")) != MATCH_YES) | |
3905 | return m; | |
d7cd448a | 3906 | if (gfc_comp_struct (gfc_current_state ())) |
8c2d8d6d | 3907 | { |
3908 | gfc_error ("Assumed type at %C is not allowed for components"); | |
3909 | return MATCH_ERROR; | |
3910 | } | |
2e2156cf | 3911 | if (!gfc_notify_std (GFC_STD_F2018, "Assumed type at %C")) |
8c2d8d6d | 3912 | return MATCH_ERROR; |
3913 | ts->type = BT_ASSUMED; | |
3914 | return MATCH_YES; | |
3915 | } | |
3916 | ||
3917 | m = gfc_match ("%n", name); | |
3918 | matched_type = (m == MATCH_YES); | |
3919 | } | |
3920 | ||
f446fb22 | 3921 | if ((matched_type && strcmp ("integer", name) == 0) |
3922 | || (!matched_type && gfc_match (" integer") == MATCH_YES)) | |
4ee9c684 | 3923 | { |
3924 | ts->type = BT_INTEGER; | |
b8a891cb | 3925 | ts->kind = gfc_default_integer_kind; |
4ee9c684 | 3926 | goto get_kind; |
3927 | } | |
3928 | ||
f446fb22 | 3929 | if ((matched_type && strcmp ("character", name) == 0) |
3930 | || (!matched_type && gfc_match (" character") == MATCH_YES)) | |
4ee9c684 | 3931 | { |
f446fb22 | 3932 | if (matched_type |
60e19868 | 3933 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3934 | "intrinsic-type-spec at %C")) | |
f446fb22 | 3935 | return MATCH_ERROR; |
3936 | ||
4ee9c684 | 3937 | ts->type = BT_CHARACTER; |
39351103 | 3938 | if (implicit_flag == 0) |
f446fb22 | 3939 | m = gfc_match_char_spec (ts); |
39351103 | 3940 | else |
f446fb22 | 3941 | m = MATCH_YES; |
3942 | ||
3943 | if (matched_type && m == MATCH_YES && gfc_match_char (')') != MATCH_YES) | |
3944 | m = MATCH_ERROR; | |
3945 | ||
3946 | return m; | |
4ee9c684 | 3947 | } |
3948 | ||
f446fb22 | 3949 | if ((matched_type && strcmp ("real", name) == 0) |
3950 | || (!matched_type && gfc_match (" real") == MATCH_YES)) | |
4ee9c684 | 3951 | { |
3952 | ts->type = BT_REAL; | |
b8a891cb | 3953 | ts->kind = gfc_default_real_kind; |
4ee9c684 | 3954 | goto get_kind; |
3955 | } | |
3956 | ||
f446fb22 | 3957 | if ((matched_type |
3958 | && (strcmp ("doubleprecision", name) == 0 | |
3959 | || (strcmp ("double", name) == 0 | |
3960 | && gfc_match (" precision") == MATCH_YES))) | |
3961 | || (!matched_type && gfc_match (" double precision") == MATCH_YES)) | |
4ee9c684 | 3962 | { |
f446fb22 | 3963 | if (matched_type |
60e19868 | 3964 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3965 | "intrinsic-type-spec at %C")) | |
f446fb22 | 3966 | return MATCH_ERROR; |
3967 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
3968 | return MATCH_ERROR; | |
3969 | ||
4ee9c684 | 3970 | ts->type = BT_REAL; |
b8a891cb | 3971 | ts->kind = gfc_default_double_kind; |
4ee9c684 | 3972 | return MATCH_YES; |
3973 | } | |
3974 | ||
f446fb22 | 3975 | if ((matched_type && strcmp ("complex", name) == 0) |
3976 | || (!matched_type && gfc_match (" complex") == MATCH_YES)) | |
4ee9c684 | 3977 | { |
3978 | ts->type = BT_COMPLEX; | |
b8a891cb | 3979 | ts->kind = gfc_default_complex_kind; |
4ee9c684 | 3980 | goto get_kind; |
3981 | } | |
3982 | ||
f446fb22 | 3983 | if ((matched_type |
3984 | && (strcmp ("doublecomplex", name) == 0 | |
3985 | || (strcmp ("double", name) == 0 | |
3986 | && gfc_match (" complex") == MATCH_YES))) | |
3987 | || (!matched_type && gfc_match (" double complex") == MATCH_YES)) | |
4ee9c684 | 3988 | { |
60e19868 | 3989 | if (!gfc_notify_std (GFC_STD_GNU, "DOUBLE COMPLEX at %C")) |
f446fb22 | 3990 | return MATCH_ERROR; |
3991 | ||
3992 | if (matched_type | |
60e19868 | 3993 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3994 | "intrinsic-type-spec at %C")) | |
f446fb22 | 3995 | return MATCH_ERROR; |
3996 | ||
3997 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
be7f01a1 | 3998 | return MATCH_ERROR; |
3999 | ||
4ee9c684 | 4000 | ts->type = BT_COMPLEX; |
b8a891cb | 4001 | ts->kind = gfc_default_double_kind; |
4ee9c684 | 4002 | return MATCH_YES; |
4003 | } | |
4004 | ||
f446fb22 | 4005 | if ((matched_type && strcmp ("logical", name) == 0) |
4006 | || (!matched_type && gfc_match (" logical") == MATCH_YES)) | |
4ee9c684 | 4007 | { |
4008 | ts->type = BT_LOGICAL; | |
b8a891cb | 4009 | ts->kind = gfc_default_logical_kind; |
4ee9c684 | 4010 | goto get_kind; |
4011 | } | |
4012 | ||
f446fb22 | 4013 | if (matched_type) |
9d958d5b | 4014 | { |
4015 | m = gfc_match_actual_arglist (1, &decl_type_param_list, true); | |
4016 | if (m == MATCH_ERROR) | |
4017 | return m; | |
4018 | ||
f446fb22 | 4019 | m = gfc_match_char (')'); |
9d958d5b | 4020 | } |
f446fb22 | 4021 | |
d7cd448a | 4022 | if (m != MATCH_YES) |
4023 | m = match_record_decl (name); | |
4024 | ||
4025 | if (matched_type || m == MATCH_YES) | |
4026 | { | |
4027 | ts->type = BT_DERIVED; | |
4028 | /* We accept record/s/ or type(s) where s is a structure, but we | |
4029 | * don't need all the extra derived-type stuff for structures. */ | |
4030 | if (gfc_find_symbol (gfc_dt_upper_string (name), NULL, 1, &sym)) | |
4031 | { | |
1b7008c4 | 4032 | gfc_error ("Type name %qs at %C is ambiguous", name); |
d7cd448a | 4033 | return MATCH_ERROR; |
4034 | } | |
9d958d5b | 4035 | |
4036 | if (sym && sym->attr.flavor == FL_DERIVED | |
4037 | && sym->attr.pdt_template | |
4038 | && gfc_current_state () != COMP_DERIVED) | |
4039 | { | |
4040 | m = gfc_get_pdt_instance (decl_type_param_list, &sym, NULL); | |
4041 | if (m != MATCH_YES) | |
4042 | return m; | |
4043 | gcc_assert (!sym->attr.pdt_template && sym->attr.pdt_type); | |
4044 | ts->u.derived = sym; | |
4045 | strcpy (name, gfc_dt_lower_string (sym->name)); | |
4046 | } | |
4047 | ||
d7cd448a | 4048 | if (sym && sym->attr.flavor == FL_STRUCT) |
4049 | { | |
4050 | ts->u.derived = sym; | |
4051 | return MATCH_YES; | |
4052 | } | |
4053 | /* Actually a derived type. */ | |
4054 | } | |
4055 | ||
1de1b1a9 | 4056 | else |
8ca7f89c | 4057 | { |
d7cd448a | 4058 | /* Match nested STRUCTURE declarations; only valid within another |
891196d7 | 4059 | structure declaration. */ |
cf078427 | 4060 | if (flag_dec_structure |
891196d7 | 4061 | && (gfc_current_state () == COMP_STRUCTURE |
4062 | || gfc_current_state () == COMP_MAP)) | |
4063 | { | |
4064 | m = gfc_match (" structure"); | |
4065 | if (m == MATCH_YES) | |
4066 | { | |
4067 | m = gfc_match_structure_decl (); | |
4068 | if (m == MATCH_YES) | |
4069 | { | |
4070 | /* gfc_new_block is updated by match_structure_decl. */ | |
4071 | ts->type = BT_DERIVED; | |
4072 | ts->u.derived = gfc_new_block; | |
4073 | return MATCH_YES; | |
4074 | } | |
4075 | } | |
4076 | if (m == MATCH_ERROR) | |
4077 | return MATCH_ERROR; | |
4078 | } | |
d7cd448a | 4079 | |
fa102e56 | 4080 | /* Match CLASS declarations. */ |
4081 | m = gfc_match (" class ( * )"); | |
4082 | if (m == MATCH_ERROR) | |
4083 | return MATCH_ERROR; | |
4084 | else if (m == MATCH_YES) | |
4085 | { | |
a90fe829 | 4086 | gfc_symbol *upe; |
4087 | gfc_symtree *st; | |
4088 | ts->type = BT_CLASS; | |
8db94b3b | 4089 | gfc_find_symbol ("STAR", gfc_current_ns, 1, &upe); |
a90fe829 | 4090 | if (upe == NULL) |
4091 | { | |
8db94b3b | 4092 | upe = gfc_new_symbol ("STAR", gfc_current_ns); |
4093 | st = gfc_new_symtree (&gfc_current_ns->sym_root, "STAR"); | |
a90fe829 | 4094 | st->n.sym = upe; |
4095 | gfc_set_sym_referenced (upe); | |
4096 | upe->refs++; | |
4097 | upe->ts.type = BT_VOID; | |
4098 | upe->attr.unlimited_polymorphic = 1; | |
4099 | /* This is essential to force the construction of | |
4100 | unlimited polymorphic component class containers. */ | |
4101 | upe->attr.zero_comp = 1; | |
76e207a9 | 4102 | if (!gfc_add_flavor (&upe->attr, FL_DERIVED, NULL, |
60e19868 | 4103 | &gfc_current_locus)) |
f7b2c82b | 4104 | return MATCH_ERROR; |
4105 | } | |
a90fe829 | 4106 | else |
4107 | { | |
f7b2c82b | 4108 | st = gfc_get_tbp_symtree (&gfc_current_ns->sym_root, "STAR"); |
a90fe829 | 4109 | st->n.sym = upe; |
4110 | upe->refs++; | |
4111 | } | |
4112 | ts->u.derived = upe; | |
4113 | return m; | |
4114 | } | |
fa102e56 | 4115 | |
9d958d5b | 4116 | m = gfc_match (" class ("); |
4117 | ||
4118 | if (m == MATCH_YES) | |
4119 | m = gfc_match ("%n", name); | |
4120 | else | |
4121 | return m; | |
4122 | ||
8ca7f89c | 4123 | if (m != MATCH_YES) |
4124 | return m; | |
1de1b1a9 | 4125 | ts->type = BT_CLASS; |
8ca7f89c | 4126 | |
60e19868 | 4127 | if (!gfc_notify_std (GFC_STD_F2003, "CLASS statement at %C")) |
e8152f13 | 4128 | return MATCH_ERROR; |
9d958d5b | 4129 | |
4130 | m = gfc_match_actual_arglist (1, &decl_type_param_list, true); | |
4131 | if (m == MATCH_ERROR) | |
4132 | return m; | |
4133 | ||
4134 | m = gfc_match_char (')'); | |
4135 | if (m != MATCH_YES) | |
4136 | return m; | |
8ca7f89c | 4137 | } |
4ee9c684 | 4138 | |
077932f9 | 4139 | /* Defer association of the derived type until the end of the |
4140 | specification block. However, if the derived type can be | |
8db94b3b | 4141 | found, add it to the typespec. */ |
077932f9 | 4142 | if (gfc_matching_function) |
67a51c8e | 4143 | { |
eeebe20b | 4144 | ts->u.derived = NULL; |
077932f9 | 4145 | if (gfc_current_state () != COMP_INTERFACE |
4146 | && !gfc_find_symbol (name, NULL, 1, &sym) && sym) | |
c2958b6b | 4147 | { |
4148 | sym = gfc_find_dt_in_generic (sym); | |
4149 | ts->u.derived = sym; | |
4150 | } | |
67a51c8e | 4151 | return MATCH_YES; |
4152 | } | |
4153 | ||
4154 | /* Search for the name but allow the components to be defined later. If | |
4155 | type = -1, this typespec has been seen in a function declaration but | |
c2958b6b | 4156 | the type could not be accessed at that point. The actual derived type is |
df084314 | 4157 | stored in a symtree with the first letter of the name capitalized; the |
c2958b6b | 4158 | symtree with the all lower-case name contains the associated |
4159 | generic function. */ | |
d7cd448a | 4160 | dt_name = gfc_dt_upper_string (name); |
077932f9 | 4161 | sym = NULL; |
c2958b6b | 4162 | dt_sym = NULL; |
4163 | if (ts->kind != -1) | |
4ee9c684 | 4164 | { |
c2958b6b | 4165 | gfc_get_ha_symbol (name, &sym); |
4166 | if (sym->generic && gfc_find_symbol (dt_name, NULL, 0, &dt_sym)) | |
4167 | { | |
716da296 | 4168 | gfc_error ("Type name %qs at %C is ambiguous", name); |
c2958b6b | 4169 | return MATCH_ERROR; |
4170 | } | |
4171 | if (sym->generic && !dt_sym) | |
4172 | dt_sym = gfc_find_dt_in_generic (sym); | |
87a0366f | 4173 | |
4174 | /* Host associated PDTs can get confused with their constructors | |
4175 | because they ar instantiated in the template's namespace. */ | |
4176 | if (!dt_sym) | |
4177 | { | |
4178 | if (gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
4179 | { | |
4180 | gfc_error ("Type name %qs at %C is ambiguous", name); | |
4181 | return MATCH_ERROR; | |
4182 | } | |
4183 | if (dt_sym && !dt_sym->attr.pdt_type) | |
4184 | dt_sym = NULL; | |
4185 | } | |
4ee9c684 | 4186 | } |
67a51c8e | 4187 | else if (ts->kind == -1) |
4188 | { | |
077932f9 | 4189 | int iface = gfc_state_stack->previous->state != COMP_INTERFACE |
4190 | || gfc_current_ns->has_import_set; | |
c2958b6b | 4191 | gfc_find_symbol (name, NULL, iface, &sym); |
4192 | if (sym && sym->generic && gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
8db94b3b | 4193 | { |
716da296 | 4194 | gfc_error ("Type name %qs at %C is ambiguous", name); |
67a51c8e | 4195 | return MATCH_ERROR; |
4196 | } | |
c2958b6b | 4197 | if (sym && sym->generic && !dt_sym) |
4198 | dt_sym = gfc_find_dt_in_generic (sym); | |
67a51c8e | 4199 | |
077932f9 | 4200 | ts->kind = 0; |
67a51c8e | 4201 | if (sym == NULL) |
4202 | return MATCH_NO; | |
4203 | } | |
4ee9c684 | 4204 | |
d7cd448a | 4205 | if ((sym->attr.flavor != FL_UNKNOWN && sym->attr.flavor != FL_STRUCT |
c2958b6b | 4206 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.generic)) |
4207 | || sym->attr.subroutine) | |
4208 | { | |
e87256b0 | 4209 | gfc_error ("Type name %qs at %C conflicts with previously declared " |
4210 | "entity at %L, which has the same name", name, | |
4211 | &sym->declared_at); | |
c2958b6b | 4212 | return MATCH_ERROR; |
4213 | } | |
4ee9c684 | 4214 | |
9d958d5b | 4215 | if (sym && sym->attr.flavor == FL_DERIVED |
4216 | && sym->attr.pdt_template | |
4217 | && gfc_current_state () != COMP_DERIVED) | |
87a0366f | 4218 | { |
4219 | m = gfc_get_pdt_instance (decl_type_param_list, &sym, NULL); | |
4220 | if (m != MATCH_YES) | |
4221 | return m; | |
4222 | gcc_assert (!sym->attr.pdt_template && sym->attr.pdt_type); | |
4223 | ts->u.derived = sym; | |
4224 | strcpy (name, gfc_dt_lower_string (sym->name)); | |
4225 | } | |
9d958d5b | 4226 | |
72bec0a3 | 4227 | gfc_save_symbol_data (sym); |
077932f9 | 4228 | gfc_set_sym_referenced (sym); |
c2958b6b | 4229 | if (!sym->attr.generic |
60e19868 | 4230 | && !gfc_add_generic (&sym->attr, sym->name, NULL)) |
c2958b6b | 4231 | return MATCH_ERROR; |
4232 | ||
4233 | if (!sym->attr.function | |
60e19868 | 4234 | && !gfc_add_function (&sym->attr, sym->name, NULL)) |
c2958b6b | 4235 | return MATCH_ERROR; |
4236 | ||
9d958d5b | 4237 | if (dt_sym && dt_sym->attr.flavor == FL_DERIVED |
4238 | && dt_sym->attr.pdt_template | |
4239 | && gfc_current_state () != COMP_DERIVED) | |
4240 | { | |
4241 | m = gfc_get_pdt_instance (decl_type_param_list, &dt_sym, NULL); | |
4242 | if (m != MATCH_YES) | |
4243 | return m; | |
4244 | gcc_assert (!dt_sym->attr.pdt_template && dt_sym->attr.pdt_type); | |
4245 | } | |
4246 | ||
c2958b6b | 4247 | if (!dt_sym) |
4248 | { | |
4249 | gfc_interface *intr, *head; | |
4250 | ||
4251 | /* Use upper case to save the actual derived-type symbol. */ | |
4252 | gfc_get_symbol (dt_name, NULL, &dt_sym); | |
dc326dc0 | 4253 | dt_sym->name = gfc_get_string ("%s", sym->name); |
c2958b6b | 4254 | head = sym->generic; |
4255 | intr = gfc_get_interface (); | |
4256 | intr->sym = dt_sym; | |
4257 | intr->where = gfc_current_locus; | |
4258 | intr->next = head; | |
4259 | sym->generic = intr; | |
4260 | sym->attr.if_source = IFSRC_DECL; | |
4261 | } | |
72bec0a3 | 4262 | else |
4263 | gfc_save_symbol_data (dt_sym); | |
c2958b6b | 4264 | |
4265 | gfc_set_sym_referenced (dt_sym); | |
4266 | ||
d7cd448a | 4267 | if (dt_sym->attr.flavor != FL_DERIVED && dt_sym->attr.flavor != FL_STRUCT |
60e19868 | 4268 | && !gfc_add_flavor (&dt_sym->attr, FL_DERIVED, sym->name, NULL)) |
c2958b6b | 4269 | return MATCH_ERROR; |
4270 | ||
4271 | ts->u.derived = dt_sym; | |
4ee9c684 | 4272 | |
4273 | return MATCH_YES; | |
4274 | ||
4275 | get_kind: | |
f446fb22 | 4276 | if (matched_type |
60e19868 | 4277 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
4278 | "intrinsic-type-spec at %C")) | |
f446fb22 | 4279 | return MATCH_ERROR; |
4280 | ||
4ee9c684 | 4281 | /* For all types except double, derived and character, look for an |
4282 | optional kind specifier. MATCH_NO is actually OK at this point. */ | |
39351103 | 4283 | if (implicit_flag == 1) |
f446fb22 | 4284 | { |
4285 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
4286 | return MATCH_ERROR; | |
4287 | ||
4288 | return MATCH_YES; | |
4289 | } | |
4ee9c684 | 4290 | |
18f3698a | 4291 | if (gfc_current_form == FORM_FREE) |
4292 | { | |
2c89e2a0 | 4293 | c = gfc_peek_ascii_char (); |
4294 | if (!gfc_is_whitespace (c) && c != '*' && c != '(' | |
1a9745d2 | 4295 | && c != ':' && c != ',') |
f446fb22 | 4296 | { |
4297 | if (matched_type && c == ')') | |
4298 | { | |
4299 | gfc_next_ascii_char (); | |
4300 | return MATCH_YES; | |
4301 | } | |
4302 | return MATCH_NO; | |
4303 | } | |
18f3698a | 4304 | } |
4305 | ||
67a51c8e | 4306 | m = gfc_match_kind_spec (ts, false); |
4ee9c684 | 4307 | if (m == MATCH_NO && ts->type != BT_CHARACTER) |
9627a89d | 4308 | { |
4309 | m = gfc_match_old_kind_spec (ts); | |
4310 | if (gfc_validate_kind (ts->type, ts->kind, true) == -1) | |
4311 | return MATCH_ERROR; | |
4312 | } | |
4ee9c684 | 4313 | |
f446fb22 | 4314 | if (matched_type && gfc_match_char (')') != MATCH_YES) |
4315 | return MATCH_ERROR; | |
4316 | ||
077932f9 | 4317 | /* Defer association of the KIND expression of function results |
4318 | until after USE and IMPORT statements. */ | |
4319 | if ((gfc_current_state () == COMP_NONE && gfc_error_flag_test ()) | |
4320 | || gfc_matching_function) | |
4321 | return MATCH_YES; | |
4322 | ||
4ee9c684 | 4323 | if (m == MATCH_NO) |
4324 | m = MATCH_YES; /* No kind specifier found. */ | |
4325 | ||
4326 | return m; | |
4327 | } | |
4328 | ||
4329 | ||
39351103 | 4330 | /* Match an IMPLICIT NONE statement. Actually, this statement is |
4331 | already matched in parse.c, or we would not end up here in the | |
4332 | first place. So the only thing we need to check, is if there is | |
4333 | trailing garbage. If not, the match is successful. */ | |
4334 | ||
4335 | match | |
4336 | gfc_match_implicit_none (void) | |
4337 | { | |
0daab503 | 4338 | char c; |
4339 | match m; | |
4340 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4341 | bool type = false; | |
4342 | bool external = false; | |
94fea777 | 4343 | locus cur_loc = gfc_current_locus; |
4344 | ||
4345 | if (gfc_current_ns->seen_implicit_none | |
4346 | || gfc_current_ns->has_implicit_none_export) | |
4347 | { | |
4348 | gfc_error ("Duplicate IMPLICIT NONE statement at %C"); | |
4349 | return MATCH_ERROR; | |
4350 | } | |
0daab503 | 4351 | |
4352 | gfc_gobble_whitespace (); | |
4353 | c = gfc_peek_ascii_char (); | |
4354 | if (c == '(') | |
4355 | { | |
4356 | (void) gfc_next_ascii_char (); | |
003e134b | 4357 | if (!gfc_notify_std (GFC_STD_F2018, "IMPORT NONE with spec list at %C")) |
0daab503 | 4358 | return MATCH_ERROR; |
94fea777 | 4359 | |
4360 | gfc_gobble_whitespace (); | |
4361 | if (gfc_peek_ascii_char () == ')') | |
0daab503 | 4362 | { |
94fea777 | 4363 | (void) gfc_next_ascii_char (); |
4364 | type = true; | |
4365 | } | |
4366 | else | |
4367 | for(;;) | |
4368 | { | |
4369 | m = gfc_match (" %n", name); | |
4370 | if (m != MATCH_YES) | |
4371 | return MATCH_ERROR; | |
0daab503 | 4372 | |
94fea777 | 4373 | if (strcmp (name, "type") == 0) |
4374 | type = true; | |
4375 | else if (strcmp (name, "external") == 0) | |
4376 | external = true; | |
4377 | else | |
4378 | return MATCH_ERROR; | |
0daab503 | 4379 | |
94fea777 | 4380 | gfc_gobble_whitespace (); |
4381 | c = gfc_next_ascii_char (); | |
4382 | if (c == ',') | |
4383 | continue; | |
4384 | if (c == ')') | |
4385 | break; | |
4386 | return MATCH_ERROR; | |
4387 | } | |
0daab503 | 4388 | } |
4389 | else | |
4390 | type = true; | |
4391 | ||
4392 | if (gfc_match_eos () != MATCH_YES) | |
4393 | return MATCH_ERROR; | |
4394 | ||
94fea777 | 4395 | gfc_set_implicit_none (type, external, &cur_loc); |
0daab503 | 4396 | |
4397 | return MATCH_YES; | |
39351103 | 4398 | } |
4399 | ||
4400 | ||
4401 | /* Match the letter range(s) of an IMPLICIT statement. */ | |
4402 | ||
4403 | static match | |
b70528c7 | 4404 | match_implicit_range (void) |
39351103 | 4405 | { |
e0be6f02 | 4406 | char c, c1, c2; |
4407 | int inner; | |
39351103 | 4408 | locus cur_loc; |
4409 | ||
4410 | cur_loc = gfc_current_locus; | |
4411 | ||
4412 | gfc_gobble_whitespace (); | |
e0be6f02 | 4413 | c = gfc_next_ascii_char (); |
39351103 | 4414 | if (c != '(') |
4415 | { | |
4416 | gfc_error ("Missing character range in IMPLICIT at %C"); | |
4417 | goto bad; | |
4418 | } | |
4419 | ||
4420 | inner = 1; | |
4421 | while (inner) | |
4422 | { | |
4423 | gfc_gobble_whitespace (); | |
e0be6f02 | 4424 | c1 = gfc_next_ascii_char (); |
39351103 | 4425 | if (!ISALPHA (c1)) |
4426 | goto bad; | |
4427 | ||
4428 | gfc_gobble_whitespace (); | |
e0be6f02 | 4429 | c = gfc_next_ascii_char (); |
39351103 | 4430 | |
4431 | switch (c) | |
4432 | { | |
4433 | case ')': | |
f6d0e37a | 4434 | inner = 0; /* Fall through. */ |
39351103 | 4435 | |
4436 | case ',': | |
4437 | c2 = c1; | |
4438 | break; | |
4439 | ||
4440 | case '-': | |
4441 | gfc_gobble_whitespace (); | |
e0be6f02 | 4442 | c2 = gfc_next_ascii_char (); |
39351103 | 4443 | if (!ISALPHA (c2)) |
4444 | goto bad; | |
4445 | ||
4446 | gfc_gobble_whitespace (); | |
e0be6f02 | 4447 | c = gfc_next_ascii_char (); |
39351103 | 4448 | |
4449 | if ((c != ',') && (c != ')')) | |
4450 | goto bad; | |
4451 | if (c == ')') | |
4452 | inner = 0; | |
4453 | ||
4454 | break; | |
4455 | ||
4456 | default: | |
4457 | goto bad; | |
4458 | } | |
4459 | ||
4460 | if (c1 > c2) | |
4461 | { | |
4462 | gfc_error ("Letters must be in alphabetic order in " | |
4463 | "IMPLICIT statement at %C"); | |
4464 | goto bad; | |
4465 | } | |
4466 | ||
4467 | /* See if we can add the newly matched range to the pending | |
1a9745d2 | 4468 | implicits from this IMPLICIT statement. We do not check for |
4469 | conflicts with whatever earlier IMPLICIT statements may have | |
4470 | set. This is done when we've successfully finished matching | |
4471 | the current one. */ | |
60e19868 | 4472 | if (!gfc_add_new_implicit_range (c1, c2)) |
39351103 | 4473 | goto bad; |
4474 | } | |
4475 | ||
4476 | return MATCH_YES; | |
4477 | ||
4478 | bad: | |
4479 | gfc_syntax_error (ST_IMPLICIT); | |
4480 | ||
4481 | gfc_current_locus = cur_loc; | |
4482 | return MATCH_ERROR; | |
4483 | } | |
4484 | ||
4485 | ||
4486 | /* Match an IMPLICIT statement, storing the types for | |
4487 | gfc_set_implicit() if the statement is accepted by the parser. | |
4488 | There is a strange looking, but legal syntactic construction | |
4489 | possible. It looks like: | |
4490 | ||
4491 | IMPLICIT INTEGER (a-b) (c-d) | |
4492 | ||
4493 | This is legal if "a-b" is a constant expression that happens to | |
4494 | equal one of the legal kinds for integers. The real problem | |
4495 | happens with an implicit specification that looks like: | |
4496 | ||
4497 | IMPLICIT INTEGER (a-b) | |
4498 | ||
4499 | In this case, a typespec matcher that is "greedy" (as most of the | |
4500 | matchers are) gobbles the character range as a kindspec, leaving | |
4501 | nothing left. We therefore have to go a bit more slowly in the | |
4502 | matching process by inhibiting the kindspec checking during | |
4503 | typespec matching and checking for a kind later. */ | |
4504 | ||
4505 | match | |
4506 | gfc_match_implicit (void) | |
4507 | { | |
4508 | gfc_typespec ts; | |
4509 | locus cur_loc; | |
e0be6f02 | 4510 | char c; |
39351103 | 4511 | match m; |
4512 | ||
0daab503 | 4513 | if (gfc_current_ns->seen_implicit_none) |
4514 | { | |
4515 | gfc_error ("IMPLICIT statement at %C following an IMPLICIT NONE (type) " | |
4516 | "statement"); | |
4517 | return MATCH_ERROR; | |
4518 | } | |
4519 | ||
52179f31 | 4520 | gfc_clear_ts (&ts); |
4521 | ||
39351103 | 4522 | /* We don't allow empty implicit statements. */ |
4523 | if (gfc_match_eos () == MATCH_YES) | |
4524 | { | |
4525 | gfc_error ("Empty IMPLICIT statement at %C"); | |
4526 | return MATCH_ERROR; | |
4527 | } | |
4528 | ||
39351103 | 4529 | do |
4530 | { | |
b70528c7 | 4531 | /* First cleanup. */ |
4532 | gfc_clear_new_implicit (); | |
4533 | ||
39351103 | 4534 | /* A basic type is mandatory here. */ |
e8152f13 | 4535 | m = gfc_match_decl_type_spec (&ts, 1); |
39351103 | 4536 | if (m == MATCH_ERROR) |
4537 | goto error; | |
4538 | if (m == MATCH_NO) | |
4539 | goto syntax; | |
4540 | ||
4541 | cur_loc = gfc_current_locus; | |
b70528c7 | 4542 | m = match_implicit_range (); |
39351103 | 4543 | |
4544 | if (m == MATCH_YES) | |
4545 | { | |
b70528c7 | 4546 | /* We may have <TYPE> (<RANGE>). */ |
39351103 | 4547 | gfc_gobble_whitespace (); |
94fea777 | 4548 | c = gfc_peek_ascii_char (); |
4549 | if (c == ',' || c == '\n' || c == ';' || c == '!') | |
b70528c7 | 4550 | { |
4551 | /* Check for CHARACTER with no length parameter. */ | |
eeebe20b | 4552 | if (ts.type == BT_CHARACTER && !ts.u.cl) |
b70528c7 | 4553 | { |
b8a891cb | 4554 | ts.kind = gfc_default_character_kind; |
d270ce52 | 4555 | ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
9f4d9f83 | 4556 | ts.u.cl->length = gfc_get_int_expr (gfc_charlen_int_kind, |
126387b5 | 4557 | NULL, 1); |
b70528c7 | 4558 | } |
4559 | ||
4560 | /* Record the Successful match. */ | |
60e19868 | 4561 | if (!gfc_merge_new_implicit (&ts)) |
b70528c7 | 4562 | return MATCH_ERROR; |
94fea777 | 4563 | if (c == ',') |
4564 | c = gfc_next_ascii_char (); | |
4565 | else if (gfc_match_eos () == MATCH_ERROR) | |
4566 | goto error; | |
b70528c7 | 4567 | continue; |
4568 | } | |
39351103 | 4569 | |
4570 | gfc_current_locus = cur_loc; | |
4571 | } | |
4572 | ||
b70528c7 | 4573 | /* Discard the (incorrectly) matched range. */ |
4574 | gfc_clear_new_implicit (); | |
4575 | ||
4576 | /* Last chance -- check <TYPE> <SELECTOR> (<RANGE>). */ | |
4577 | if (ts.type == BT_CHARACTER) | |
10f5dcc0 | 4578 | m = gfc_match_char_spec (&ts); |
b70528c7 | 4579 | else |
39351103 | 4580 | { |
67a51c8e | 4581 | m = gfc_match_kind_spec (&ts, false); |
39351103 | 4582 | if (m == MATCH_NO) |
b70528c7 | 4583 | { |
4584 | m = gfc_match_old_kind_spec (&ts); | |
4585 | if (m == MATCH_ERROR) | |
4586 | goto error; | |
4587 | if (m == MATCH_NO) | |
4588 | goto syntax; | |
4589 | } | |
39351103 | 4590 | } |
b70528c7 | 4591 | if (m == MATCH_ERROR) |
4592 | goto error; | |
39351103 | 4593 | |
b70528c7 | 4594 | m = match_implicit_range (); |
39351103 | 4595 | if (m == MATCH_ERROR) |
4596 | goto error; | |
4597 | if (m == MATCH_NO) | |
4598 | goto syntax; | |
4599 | ||
4600 | gfc_gobble_whitespace (); | |
e0be6f02 | 4601 | c = gfc_next_ascii_char (); |
94fea777 | 4602 | if (c != ',' && gfc_match_eos () != MATCH_YES) |
39351103 | 4603 | goto syntax; |
4604 | ||
60e19868 | 4605 | if (!gfc_merge_new_implicit (&ts)) |
b70528c7 | 4606 | return MATCH_ERROR; |
39351103 | 4607 | } |
4608 | while (c == ','); | |
4609 | ||
b70528c7 | 4610 | return MATCH_YES; |
39351103 | 4611 | |
4612 | syntax: | |
4613 | gfc_syntax_error (ST_IMPLICIT); | |
4614 | ||
4615 | error: | |
4616 | return MATCH_ERROR; | |
4617 | } | |
4618 | ||
f6d0e37a | 4619 | |
d67fc9ae | 4620 | match |
4621 | gfc_match_import (void) | |
4622 | { | |
4623 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4624 | match m; | |
4625 | gfc_symbol *sym; | |
4626 | gfc_symtree *st; | |
4627 | ||
f6d0e37a | 4628 | if (gfc_current_ns->proc_name == NULL |
4629 | || gfc_current_ns->proc_name->attr.if_source != IFSRC_IFBODY) | |
d67fc9ae | 4630 | { |
4631 | gfc_error ("IMPORT statement at %C only permitted in " | |
4632 | "an INTERFACE body"); | |
4633 | return MATCH_ERROR; | |
4634 | } | |
4635 | ||
4b8eb6ca | 4636 | if (gfc_current_ns->proc_name->attr.module_procedure) |
4637 | { | |
4638 | gfc_error ("F2008: C1210 IMPORT statement at %C is not permitted " | |
4639 | "in a module procedure interface body"); | |
4640 | return MATCH_ERROR; | |
4641 | } | |
4642 | ||
60e19868 | 4643 | if (!gfc_notify_std (GFC_STD_F2003, "IMPORT statement at %C")) |
d67fc9ae | 4644 | return MATCH_ERROR; |
4645 | ||
4646 | if (gfc_match_eos () == MATCH_YES) | |
4647 | { | |
4648 | /* All host variables should be imported. */ | |
4649 | gfc_current_ns->has_import_set = 1; | |
4650 | return MATCH_YES; | |
4651 | } | |
4652 | ||
4653 | if (gfc_match (" ::") == MATCH_YES) | |
4654 | { | |
4655 | if (gfc_match_eos () == MATCH_YES) | |
1a9745d2 | 4656 | { |
4657 | gfc_error ("Expecting list of named entities at %C"); | |
4658 | return MATCH_ERROR; | |
4659 | } | |
d67fc9ae | 4660 | } |
4661 | ||
4662 | for(;;) | |
4663 | { | |
495e197c | 4664 | sym = NULL; |
d67fc9ae | 4665 | m = gfc_match (" %n", name); |
4666 | switch (m) | |
4667 | { | |
4668 | case MATCH_YES: | |
096d4ad9 | 4669 | if (gfc_current_ns->parent != NULL |
f6d0e37a | 4670 | && gfc_find_symbol (name, gfc_current_ns->parent, 1, &sym)) |
096d4ad9 | 4671 | { |
716da296 | 4672 | gfc_error ("Type name %qs at %C is ambiguous", name); |
096d4ad9 | 4673 | return MATCH_ERROR; |
4674 | } | |
6b010511 | 4675 | else if (!sym && gfc_current_ns->proc_name->ns->parent != NULL |
f6d0e37a | 4676 | && gfc_find_symbol (name, |
4677 | gfc_current_ns->proc_name->ns->parent, | |
4678 | 1, &sym)) | |
1a9745d2 | 4679 | { |
716da296 | 4680 | gfc_error ("Type name %qs at %C is ambiguous", name); |
1a9745d2 | 4681 | return MATCH_ERROR; |
4682 | } | |
4683 | ||
4684 | if (sym == NULL) | |
4685 | { | |
716da296 | 4686 | gfc_error ("Cannot IMPORT %qs from host scoping unit " |
1a9745d2 | 4687 | "at %C - does not exist.", name); |
4688 | return MATCH_ERROR; | |
4689 | } | |
4690 | ||
d67dd34f | 4691 | if (gfc_find_symtree (gfc_current_ns->sym_root, name)) |
1a9745d2 | 4692 | { |
6f521718 | 4693 | gfc_warning (0, "%qs is already IMPORTed from host scoping unit " |
4166acc7 | 4694 | "at %C", name); |
1a9745d2 | 4695 | goto next_item; |
4696 | } | |
4697 | ||
d67dd34f | 4698 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); |
1a9745d2 | 4699 | st->n.sym = sym; |
4700 | sym->refs++; | |
c723595c | 4701 | sym->attr.imported = 1; |
d67fc9ae | 4702 | |
c2958b6b | 4703 | if (sym->attr.generic && (sym = gfc_find_dt_in_generic (sym))) |
4704 | { | |
4705 | /* The actual derived type is stored in a symtree with the first | |
df084314 | 4706 | letter of the name capitalized; the symtree with the all |
293d72e0 | 4707 | lower-case name contains the associated generic function. */ |
c2958b6b | 4708 | st = gfc_new_symtree (&gfc_current_ns->sym_root, |
d7cd448a | 4709 | gfc_dt_upper_string (name)); |
c2958b6b | 4710 | st->n.sym = sym; |
4711 | sym->refs++; | |
4712 | sym->attr.imported = 1; | |
4713 | } | |
4714 | ||
d67fc9ae | 4715 | goto next_item; |
4716 | ||
4717 | case MATCH_NO: | |
4718 | break; | |
4719 | ||
4720 | case MATCH_ERROR: | |
4721 | return MATCH_ERROR; | |
4722 | } | |
4723 | ||
4724 | next_item: | |
4725 | if (gfc_match_eos () == MATCH_YES) | |
4726 | break; | |
4727 | if (gfc_match_char (',') != MATCH_YES) | |
4728 | goto syntax; | |
4729 | } | |
4730 | ||
4731 | return MATCH_YES; | |
4732 | ||
4733 | syntax: | |
4734 | gfc_error ("Syntax error in IMPORT statement at %C"); | |
4735 | return MATCH_ERROR; | |
4736 | } | |
39351103 | 4737 | |
f6d0e37a | 4738 | |
c72e5f7e | 4739 | /* A minimal implementation of gfc_match without whitespace, escape |
4740 | characters or variable arguments. Returns true if the next | |
4741 | characters match the TARGET template exactly. */ | |
4742 | ||
4743 | static bool | |
4744 | match_string_p (const char *target) | |
4745 | { | |
4746 | const char *p; | |
4747 | ||
4748 | for (p = target; *p; p++) | |
e0be6f02 | 4749 | if ((char) gfc_next_ascii_char () != *p) |
c72e5f7e | 4750 | return false; |
4751 | return true; | |
4752 | } | |
4753 | ||
4ee9c684 | 4754 | /* Matches an attribute specification including array specs. If |
4755 | successful, leaves the variables current_attr and current_as | |
4756 | holding the specification. Also sets the colon_seen variable for | |
4757 | later use by matchers associated with initializations. | |
4758 | ||
4759 | This subroutine is a little tricky in the sense that we don't know | |
4760 | if we really have an attr-spec until we hit the double colon. | |
4761 | Until that time, we can only return MATCH_NO. This forces us to | |
4762 | check for duplicate specification at this level. */ | |
4763 | ||
4764 | static match | |
4765 | match_attr_spec (void) | |
4766 | { | |
4ee9c684 | 4767 | /* Modifiers that can exist in a type statement. */ |
d55c3689 | 4768 | enum |
55be378c | 4769 | { GFC_DECL_BEGIN = 0, DECL_ALLOCATABLE = GFC_DECL_BEGIN, |
4770 | DECL_IN = INTENT_IN, DECL_OUT = INTENT_OUT, DECL_INOUT = INTENT_INOUT, | |
4771 | DECL_DIMENSION, DECL_EXTERNAL, | |
4772 | DECL_INTRINSIC, DECL_OPTIONAL, | |
3ea52af3 | 4773 | DECL_PARAMETER, DECL_POINTER, DECL_PROTECTED, DECL_PRIVATE, |
8e652fcf | 4774 | DECL_STATIC, DECL_AUTOMATIC, |
3ea52af3 | 4775 | DECL_PUBLIC, DECL_SAVE, DECL_TARGET, DECL_VALUE, DECL_VOLATILE, |
b3c3927c | 4776 | DECL_IS_BIND_C, DECL_CODIMENSION, DECL_ASYNCHRONOUS, DECL_CONTIGUOUS, |
9d958d5b | 4777 | DECL_LEN, DECL_KIND, DECL_NONE, GFC_DECL_END /* Sentinel */ |
d55c3689 | 4778 | }; |
4ee9c684 | 4779 | |
4780 | /* GFC_DECL_END is the sentinel, index starts at 0. */ | |
4781 | #define NUM_DECL GFC_DECL_END | |
4782 | ||
55be378c | 4783 | /* Make sure that values from sym_intent are safe to be used here. */ |
4784 | gcc_assert (INTENT_IN > 0); | |
4785 | ||
4ee9c684 | 4786 | locus start, seen_at[NUM_DECL]; |
4787 | int seen[NUM_DECL]; | |
9f1b7d17 | 4788 | unsigned int d; |
4ee9c684 | 4789 | const char *attr; |
4790 | match m; | |
60e19868 | 4791 | bool t; |
4ee9c684 | 4792 | |
4793 | gfc_clear_attr (¤t_attr); | |
cbb9e6aa | 4794 | start = gfc_current_locus; |
4ee9c684 | 4795 | |
4796 | current_as = NULL; | |
4797 | colon_seen = 0; | |
8ef2cf76 | 4798 | attr_seen = 0; |
4ee9c684 | 4799 | |
4800 | /* See if we get all of the keywords up to the final double colon. */ | |
4801 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
4802 | seen[d] = 0; | |
4803 | ||
4804 | for (;;) | |
4805 | { | |
e0be6f02 | 4806 | char ch; |
c5d33754 | 4807 | |
c72e5f7e | 4808 | d = DECL_NONE; |
4809 | gfc_gobble_whitespace (); | |
4810 | ||
e0be6f02 | 4811 | ch = gfc_next_ascii_char (); |
c72e5f7e | 4812 | if (ch == ':') |
4813 | { | |
4814 | /* This is the successful exit condition for the loop. */ | |
e0be6f02 | 4815 | if (gfc_next_ascii_char () == ':') |
c72e5f7e | 4816 | break; |
4817 | } | |
4818 | else if (ch == ',') | |
c5d33754 | 4819 | { |
c5d33754 | 4820 | gfc_gobble_whitespace (); |
e0be6f02 | 4821 | switch (gfc_peek_ascii_char ()) |
c5d33754 | 4822 | { |
c72e5f7e | 4823 | case 'a': |
738928be | 4824 | gfc_next_ascii_char (); |
4825 | switch (gfc_next_ascii_char ()) | |
4826 | { | |
4827 | case 'l': | |
4828 | if (match_string_p ("locatable")) | |
4829 | { | |
4830 | /* Matched "allocatable". */ | |
4831 | d = DECL_ALLOCATABLE; | |
4832 | } | |
4833 | break; | |
4834 | ||
4835 | case 's': | |
4836 | if (match_string_p ("ynchronous")) | |
4837 | { | |
4838 | /* Matched "asynchronous". */ | |
4839 | d = DECL_ASYNCHRONOUS; | |
4840 | } | |
4841 | break; | |
8e652fcf | 4842 | |
4843 | case 'u': | |
4844 | if (match_string_p ("tomatic")) | |
4845 | { | |
4846 | /* Matched "automatic". */ | |
4847 | d = DECL_AUTOMATIC; | |
4848 | } | |
4849 | break; | |
738928be | 4850 | } |
b3c3927c | 4851 | break; |
c72e5f7e | 4852 | |
4853 | case 'b': | |
c5d33754 | 4854 | /* Try and match the bind(c). */ |
75ae7f6c | 4855 | m = gfc_match_bind_c (NULL, true); |
5cf92482 | 4856 | if (m == MATCH_YES) |
c5d33754 | 4857 | d = DECL_IS_BIND_C; |
5cf92482 | 4858 | else if (m == MATCH_ERROR) |
4859 | goto cleanup; | |
c72e5f7e | 4860 | break; |
4861 | ||
aff518b0 | 4862 | case 'c': |
b3c3927c | 4863 | gfc_next_ascii_char (); |
4864 | if ('o' != gfc_next_ascii_char ()) | |
4865 | break; | |
4866 | switch (gfc_next_ascii_char ()) | |
4867 | { | |
4868 | case 'd': | |
4869 | if (match_string_p ("imension")) | |
4870 | { | |
4871 | d = DECL_CODIMENSION; | |
4872 | break; | |
4873 | } | |
e3533433 | 4874 | /* FALLTHRU */ |
b3c3927c | 4875 | case 'n': |
4876 | if (match_string_p ("tiguous")) | |
4877 | { | |
4878 | d = DECL_CONTIGUOUS; | |
4879 | break; | |
4880 | } | |
4881 | } | |
aff518b0 | 4882 | break; |
4883 | ||
c72e5f7e | 4884 | case 'd': |
4885 | if (match_string_p ("dimension")) | |
4886 | d = DECL_DIMENSION; | |
4887 | break; | |
4888 | ||
4889 | case 'e': | |
4890 | if (match_string_p ("external")) | |
4891 | d = DECL_EXTERNAL; | |
4892 | break; | |
4893 | ||
4894 | case 'i': | |
4895 | if (match_string_p ("int")) | |
4896 | { | |
e0be6f02 | 4897 | ch = gfc_next_ascii_char (); |
c72e5f7e | 4898 | if (ch == 'e') |
4899 | { | |
4900 | if (match_string_p ("nt")) | |
4901 | { | |
4902 | /* Matched "intent". */ | |
55be378c | 4903 | d = match_intent_spec (); |
4904 | if (d == INTENT_UNKNOWN) | |
4905 | { | |
4906 | m = MATCH_ERROR; | |
4907 | goto cleanup; | |
4908 | } | |
c72e5f7e | 4909 | } |
4910 | } | |
4911 | else if (ch == 'r') | |
4912 | { | |
4913 | if (match_string_p ("insic")) | |
4914 | { | |
4915 | /* Matched "intrinsic". */ | |
4916 | d = DECL_INTRINSIC; | |
4917 | } | |
4918 | } | |
4919 | } | |
4920 | break; | |
4921 | ||
9d958d5b | 4922 | case 'k': |
4923 | if (match_string_p ("kind")) | |
4924 | d = DECL_KIND; | |
4925 | break; | |
4926 | ||
4927 | case 'l': | |
4928 | if (match_string_p ("len")) | |
4929 | d = DECL_LEN; | |
4930 | break; | |
4931 | ||
c72e5f7e | 4932 | case 'o': |
4933 | if (match_string_p ("optional")) | |
4934 | d = DECL_OPTIONAL; | |
4935 | break; | |
4936 | ||
4937 | case 'p': | |
e0be6f02 | 4938 | gfc_next_ascii_char (); |
4939 | switch (gfc_next_ascii_char ()) | |
c72e5f7e | 4940 | { |
4941 | case 'a': | |
4942 | if (match_string_p ("rameter")) | |
4943 | { | |
4944 | /* Matched "parameter". */ | |
4945 | d = DECL_PARAMETER; | |
4946 | } | |
4947 | break; | |
4948 | ||
4949 | case 'o': | |
4950 | if (match_string_p ("inter")) | |
4951 | { | |
4952 | /* Matched "pointer". */ | |
4953 | d = DECL_POINTER; | |
4954 | } | |
4955 | break; | |
4956 | ||
4957 | case 'r': | |
e0be6f02 | 4958 | ch = gfc_next_ascii_char (); |
c72e5f7e | 4959 | if (ch == 'i') |
4960 | { | |
4961 | if (match_string_p ("vate")) | |
4962 | { | |
4963 | /* Matched "private". */ | |
4964 | d = DECL_PRIVATE; | |
4965 | } | |
4966 | } | |
4967 | else if (ch == 'o') | |
4968 | { | |
4969 | if (match_string_p ("tected")) | |
4970 | { | |
4971 | /* Matched "protected". */ | |
4972 | d = DECL_PROTECTED; | |
4973 | } | |
4974 | } | |
4975 | break; | |
4976 | ||
4977 | case 'u': | |
4978 | if (match_string_p ("blic")) | |
4979 | { | |
4980 | /* Matched "public". */ | |
4981 | d = DECL_PUBLIC; | |
4982 | } | |
4983 | break; | |
4984 | } | |
4985 | break; | |
4986 | ||
4987 | case 's': | |
8e652fcf | 4988 | gfc_next_ascii_char (); |
4989 | switch (gfc_next_ascii_char ()) | |
4990 | { | |
4991 | case 'a': | |
4992 | if (match_string_p ("ve")) | |
4993 | { | |
4994 | /* Matched "save". */ | |
4995 | d = DECL_SAVE; | |
4996 | } | |
4997 | break; | |
4998 | ||
4999 | case 't': | |
5000 | if (match_string_p ("atic")) | |
5001 | { | |
5002 | /* Matched "static". */ | |
5003 | d = DECL_STATIC; | |
5004 | } | |
5005 | break; | |
5006 | } | |
c72e5f7e | 5007 | break; |
5008 | ||
5009 | case 't': | |
5010 | if (match_string_p ("target")) | |
5011 | d = DECL_TARGET; | |
5012 | break; | |
5013 | ||
5014 | case 'v': | |
e0be6f02 | 5015 | gfc_next_ascii_char (); |
5016 | ch = gfc_next_ascii_char (); | |
c72e5f7e | 5017 | if (ch == 'a') |
5018 | { | |
5019 | if (match_string_p ("lue")) | |
5020 | { | |
5021 | /* Matched "value". */ | |
5022 | d = DECL_VALUE; | |
5023 | } | |
5024 | } | |
5025 | else if (ch == 'o') | |
5026 | { | |
5027 | if (match_string_p ("latile")) | |
5028 | { | |
5029 | /* Matched "volatile". */ | |
5030 | d = DECL_VOLATILE; | |
5031 | } | |
5032 | } | |
5033 | break; | |
c5d33754 | 5034 | } |
5035 | } | |
f3f9b222 | 5036 | |
c72e5f7e | 5037 | /* No double colon and no recognizable decl_type, so assume that |
5038 | we've been looking at something else the whole time. */ | |
5039 | if (d == DECL_NONE) | |
5040 | { | |
5041 | m = MATCH_NO; | |
5042 | goto cleanup; | |
5043 | } | |
e14bee04 | 5044 | |
7e221851 | 5045 | /* Check to make sure any parens are paired up correctly. */ |
5046 | if (gfc_match_parens () == MATCH_ERROR) | |
5047 | { | |
5048 | m = MATCH_ERROR; | |
5049 | goto cleanup; | |
5050 | } | |
5051 | ||
4ee9c684 | 5052 | seen[d]++; |
cbb9e6aa | 5053 | seen_at[d] = gfc_current_locus; |
4ee9c684 | 5054 | |
e97ac7c0 | 5055 | if (d == DECL_DIMENSION || d == DECL_CODIMENSION) |
4ee9c684 | 5056 | { |
e97ac7c0 | 5057 | gfc_array_spec *as = NULL; |
4ee9c684 | 5058 | |
e97ac7c0 | 5059 | m = gfc_match_array_spec (&as, d == DECL_DIMENSION, |
5060 | d == DECL_CODIMENSION); | |
5061 | ||
5062 | if (current_as == NULL) | |
5063 | current_as = as; | |
5064 | else if (m == MATCH_YES) | |
4ee9c684 | 5065 | { |
60e19868 | 5066 | if (!merge_array_spec (as, current_as, false)) |
9b58b4c7 | 5067 | m = MATCH_ERROR; |
434f0922 | 5068 | free (as); |
4ee9c684 | 5069 | } |
5070 | ||
aff518b0 | 5071 | if (m == MATCH_NO) |
5072 | { | |
e97ac7c0 | 5073 | if (d == DECL_CODIMENSION) |
5074 | gfc_error ("Missing codimension specification at %C"); | |
5075 | else | |
5076 | gfc_error ("Missing dimension specification at %C"); | |
aff518b0 | 5077 | m = MATCH_ERROR; |
5078 | } | |
5079 | ||
5080 | if (m == MATCH_ERROR) | |
5081 | goto cleanup; | |
5082 | } | |
4ee9c684 | 5083 | } |
5084 | ||
4ee9c684 | 5085 | /* Since we've seen a double colon, we have to be looking at an |
5086 | attr-spec. This means that we can now issue errors. */ | |
5087 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
5088 | if (seen[d] > 1) | |
5089 | { | |
5090 | switch (d) | |
5091 | { | |
5092 | case DECL_ALLOCATABLE: | |
5093 | attr = "ALLOCATABLE"; | |
5094 | break; | |
738928be | 5095 | case DECL_ASYNCHRONOUS: |
5096 | attr = "ASYNCHRONOUS"; | |
5097 | break; | |
aff518b0 | 5098 | case DECL_CODIMENSION: |
5099 | attr = "CODIMENSION"; | |
5100 | break; | |
b3c3927c | 5101 | case DECL_CONTIGUOUS: |
5102 | attr = "CONTIGUOUS"; | |
5103 | break; | |
4ee9c684 | 5104 | case DECL_DIMENSION: |
5105 | attr = "DIMENSION"; | |
5106 | break; | |
5107 | case DECL_EXTERNAL: | |
5108 | attr = "EXTERNAL"; | |
5109 | break; | |
5110 | case DECL_IN: | |
5111 | attr = "INTENT (IN)"; | |
5112 | break; | |
5113 | case DECL_OUT: | |
5114 | attr = "INTENT (OUT)"; | |
5115 | break; | |
5116 | case DECL_INOUT: | |
5117 | attr = "INTENT (IN OUT)"; | |
5118 | break; | |
5119 | case DECL_INTRINSIC: | |
5120 | attr = "INTRINSIC"; | |
5121 | break; | |
5122 | case DECL_OPTIONAL: | |
5123 | attr = "OPTIONAL"; | |
5124 | break; | |
9d958d5b | 5125 | case DECL_KIND: |
5126 | attr = "KIND"; | |
5127 | break; | |
5128 | case DECL_LEN: | |
5129 | attr = "LEN"; | |
5130 | break; | |
4ee9c684 | 5131 | case DECL_PARAMETER: |
5132 | attr = "PARAMETER"; | |
5133 | break; | |
5134 | case DECL_POINTER: | |
5135 | attr = "POINTER"; | |
5136 | break; | |
3ea52af3 | 5137 | case DECL_PROTECTED: |
5138 | attr = "PROTECTED"; | |
5139 | break; | |
4ee9c684 | 5140 | case DECL_PRIVATE: |
5141 | attr = "PRIVATE"; | |
5142 | break; | |
5143 | case DECL_PUBLIC: | |
5144 | attr = "PUBLIC"; | |
5145 | break; | |
5146 | case DECL_SAVE: | |
5147 | attr = "SAVE"; | |
5148 | break; | |
8e652fcf | 5149 | case DECL_STATIC: |
5150 | attr = "STATIC"; | |
5151 | break; | |
5152 | case DECL_AUTOMATIC: | |
5153 | attr = "AUTOMATIC"; | |
5154 | break; | |
4ee9c684 | 5155 | case DECL_TARGET: |
5156 | attr = "TARGET"; | |
5157 | break; | |
c5d33754 | 5158 | case DECL_IS_BIND_C: |
5159 | attr = "IS_BIND_C"; | |
5160 | break; | |
5161 | case DECL_VALUE: | |
5162 | attr = "VALUE"; | |
5163 | break; | |
ef814c81 | 5164 | case DECL_VOLATILE: |
5165 | attr = "VOLATILE"; | |
5166 | break; | |
4ee9c684 | 5167 | default: |
f6d0e37a | 5168 | attr = NULL; /* This shouldn't happen. */ |
4ee9c684 | 5169 | } |
5170 | ||
5171 | gfc_error ("Duplicate %s attribute at %L", attr, &seen_at[d]); | |
5172 | m = MATCH_ERROR; | |
5173 | goto cleanup; | |
5174 | } | |
5175 | ||
5176 | /* Now that we've dealt with duplicate attributes, add the attributes | |
5177 | to the current attribute. */ | |
5178 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
5179 | { | |
5180 | if (seen[d] == 0) | |
5181 | continue; | |
8ef2cf76 | 5182 | else |
5183 | attr_seen = 1; | |
4ee9c684 | 5184 | |
8e652fcf | 5185 | if ((d == DECL_STATIC || d == DECL_AUTOMATIC) |
5186 | && !flag_dec_static) | |
5187 | { | |
841da9cf | 5188 | gfc_error ("%s at %L is a DEC extension, enable with " |
5189 | "%<-fdec-static%>", | |
8e652fcf | 5190 | d == DECL_STATIC ? "STATIC" : "AUTOMATIC", &seen_at[d]); |
5191 | m = MATCH_ERROR; | |
5192 | goto cleanup; | |
5193 | } | |
5194 | /* Allow SAVE with STATIC, but don't complain. */ | |
5195 | if (d == DECL_STATIC && seen[DECL_SAVE]) | |
5196 | continue; | |
5197 | ||
4ee9c684 | 5198 | if (gfc_current_state () == COMP_DERIVED |
aff518b0 | 5199 | && d != DECL_DIMENSION && d != DECL_CODIMENSION |
5200 | && d != DECL_POINTER && d != DECL_PRIVATE | |
b3c3927c | 5201 | && d != DECL_PUBLIC && d != DECL_CONTIGUOUS && d != DECL_NONE) |
4ee9c684 | 5202 | { |
2294b616 | 5203 | if (d == DECL_ALLOCATABLE) |
5204 | { | |
60e19868 | 5205 | if (!gfc_notify_std (GFC_STD_F2003, "ALLOCATABLE " |
5206 | "attribute at %C in a TYPE definition")) | |
2294b616 | 5207 | { |
5208 | m = MATCH_ERROR; | |
5209 | goto cleanup; | |
5210 | } | |
1a9745d2 | 5211 | } |
9d958d5b | 5212 | else if (d == DECL_KIND) |
5213 | { | |
5214 | if (!gfc_notify_std (GFC_STD_F2003, "KIND " | |
5215 | "attribute at %C in a TYPE definition")) | |
5216 | { | |
5217 | m = MATCH_ERROR; | |
5218 | goto cleanup; | |
5219 | } | |
5220 | if (current_ts.type != BT_INTEGER) | |
5221 | { | |
5222 | gfc_error ("Component with KIND attribute at %C must be " | |
5223 | "INTEGER"); | |
5224 | m = MATCH_ERROR; | |
5225 | goto cleanup; | |
5226 | } | |
5227 | if (current_ts.kind != gfc_default_integer_kind) | |
5228 | { | |
5229 | gfc_error ("Component with KIND attribute at %C must be " | |
5230 | "default integer kind (%d)", | |
5231 | gfc_default_integer_kind); | |
5232 | m = MATCH_ERROR; | |
5233 | goto cleanup; | |
5234 | } | |
5235 | } | |
5236 | else if (d == DECL_LEN) | |
5237 | { | |
5238 | if (!gfc_notify_std (GFC_STD_F2003, "LEN " | |
5239 | "attribute at %C in a TYPE definition")) | |
5240 | { | |
5241 | m = MATCH_ERROR; | |
5242 | goto cleanup; | |
5243 | } | |
5244 | if (current_ts.type != BT_INTEGER) | |
5245 | { | |
5246 | gfc_error ("Component with LEN attribute at %C must be " | |
5247 | "INTEGER"); | |
5248 | m = MATCH_ERROR; | |
5249 | goto cleanup; | |
5250 | } | |
5251 | if (current_ts.kind != gfc_default_integer_kind) | |
5252 | { | |
5253 | gfc_error ("Component with LEN attribute at %C must be " | |
5254 | "default integer kind (%d)", | |
5255 | gfc_default_integer_kind); | |
5256 | m = MATCH_ERROR; | |
5257 | goto cleanup; | |
5258 | } | |
5259 | } | |
1a9745d2 | 5260 | else |
2294b616 | 5261 | { |
5262 | gfc_error ("Attribute at %L is not allowed in a TYPE definition", | |
e14bee04 | 5263 | &seen_at[d]); |
2294b616 | 5264 | m = MATCH_ERROR; |
5265 | goto cleanup; | |
5266 | } | |
4ee9c684 | 5267 | } |
5268 | ||
ea13b9b7 | 5269 | if ((d == DECL_PRIVATE || d == DECL_PUBLIC) |
1a9745d2 | 5270 | && gfc_current_state () != COMP_MODULE) |
ea13b9b7 | 5271 | { |
5272 | if (d == DECL_PRIVATE) | |
5273 | attr = "PRIVATE"; | |
5274 | else | |
5275 | attr = "PUBLIC"; | |
e14bee04 | 5276 | if (gfc_current_state () == COMP_DERIVED |
5277 | && gfc_state_stack->previous | |
5278 | && gfc_state_stack->previous->state == COMP_MODULE) | |
5279 | { | |
60e19868 | 5280 | if (!gfc_notify_std (GFC_STD_F2003, "Attribute %s " |
76e207a9 | 5281 | "at %L in a TYPE definition", attr, |
60e19868 | 5282 | &seen_at[d])) |
e14bee04 | 5283 | { |
5284 | m = MATCH_ERROR; | |
5285 | goto cleanup; | |
5286 | } | |
5287 | } | |
5288 | else | |
5289 | { | |
5290 | gfc_error ("%s attribute at %L is not allowed outside of the " | |
5291 | "specification part of a module", attr, &seen_at[d]); | |
5292 | m = MATCH_ERROR; | |
5293 | goto cleanup; | |
5294 | } | |
ea13b9b7 | 5295 | } |
5296 | ||
9d958d5b | 5297 | if (gfc_current_state () != COMP_DERIVED |
5298 | && (d == DECL_KIND || d == DECL_LEN)) | |
5299 | { | |
5300 | gfc_error ("Attribute at %L is not allowed outside a TYPE " | |
5301 | "definition", &seen_at[d]); | |
5302 | m = MATCH_ERROR; | |
5303 | goto cleanup; | |
5304 | } | |
5305 | ||
4ee9c684 | 5306 | switch (d) |
5307 | { | |
5308 | case DECL_ALLOCATABLE: | |
5309 | t = gfc_add_allocatable (¤t_attr, &seen_at[d]); | |
5310 | break; | |
5311 | ||
738928be | 5312 | case DECL_ASYNCHRONOUS: |
60e19868 | 5313 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS attribute at %C")) |
5314 | t = false; | |
738928be | 5315 | else |
5316 | t = gfc_add_asynchronous (¤t_attr, NULL, &seen_at[d]); | |
5317 | break; | |
5318 | ||
aff518b0 | 5319 | case DECL_CODIMENSION: |
5320 | t = gfc_add_codimension (¤t_attr, NULL, &seen_at[d]); | |
5321 | break; | |
5322 | ||
b3c3927c | 5323 | case DECL_CONTIGUOUS: |
60e19868 | 5324 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS attribute at %C")) |
5325 | t = false; | |
b3c3927c | 5326 | else |
5327 | t = gfc_add_contiguous (¤t_attr, NULL, &seen_at[d]); | |
5328 | break; | |
5329 | ||
4ee9c684 | 5330 | case DECL_DIMENSION: |
950683ed | 5331 | t = gfc_add_dimension (¤t_attr, NULL, &seen_at[d]); |
4ee9c684 | 5332 | break; |
5333 | ||
5334 | case DECL_EXTERNAL: | |
5335 | t = gfc_add_external (¤t_attr, &seen_at[d]); | |
5336 | break; | |
5337 | ||
5338 | case DECL_IN: | |
5339 | t = gfc_add_intent (¤t_attr, INTENT_IN, &seen_at[d]); | |
5340 | break; | |
5341 | ||
5342 | case DECL_OUT: | |
5343 | t = gfc_add_intent (¤t_attr, INTENT_OUT, &seen_at[d]); | |
5344 | break; | |
5345 | ||
5346 | case DECL_INOUT: | |
5347 | t = gfc_add_intent (¤t_attr, INTENT_INOUT, &seen_at[d]); | |
5348 | break; | |
5349 | ||
5350 | case DECL_INTRINSIC: | |
5351 | t = gfc_add_intrinsic (¤t_attr, &seen_at[d]); | |
5352 | break; | |
5353 | ||
5354 | case DECL_OPTIONAL: | |
5355 | t = gfc_add_optional (¤t_attr, &seen_at[d]); | |
5356 | break; | |
5357 | ||
9d958d5b | 5358 | case DECL_KIND: |
5359 | t = gfc_add_kind (¤t_attr, &seen_at[d]); | |
5360 | break; | |
5361 | ||
5362 | case DECL_LEN: | |
5363 | t = gfc_add_len (¤t_attr, &seen_at[d]); | |
5364 | break; | |
5365 | ||
4ee9c684 | 5366 | case DECL_PARAMETER: |
950683ed | 5367 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, &seen_at[d]); |
4ee9c684 | 5368 | break; |
5369 | ||
5370 | case DECL_POINTER: | |
5371 | t = gfc_add_pointer (¤t_attr, &seen_at[d]); | |
5372 | break; | |
5373 | ||
3ea52af3 | 5374 | case DECL_PROTECTED: |
8371b2e9 | 5375 | if (gfc_current_state () != COMP_MODULE |
5376 | || (gfc_current_ns->proc_name | |
5377 | && gfc_current_ns->proc_name->attr.flavor != FL_MODULE)) | |
3ea52af3 | 5378 | { |
5379 | gfc_error ("PROTECTED at %C only allowed in specification " | |
5380 | "part of a module"); | |
60e19868 | 5381 | t = false; |
3ea52af3 | 5382 | break; |
5383 | } | |
5384 | ||
60e19868 | 5385 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED attribute at %C")) |
5386 | t = false; | |
3ea52af3 | 5387 | else |
5388 | t = gfc_add_protected (¤t_attr, NULL, &seen_at[d]); | |
5389 | break; | |
5390 | ||
4ee9c684 | 5391 | case DECL_PRIVATE: |
950683ed | 5392 | t = gfc_add_access (¤t_attr, ACCESS_PRIVATE, NULL, |
5393 | &seen_at[d]); | |
4ee9c684 | 5394 | break; |
5395 | ||
5396 | case DECL_PUBLIC: | |
950683ed | 5397 | t = gfc_add_access (¤t_attr, ACCESS_PUBLIC, NULL, |
5398 | &seen_at[d]); | |
4ee9c684 | 5399 | break; |
5400 | ||
8e652fcf | 5401 | case DECL_STATIC: |
4ee9c684 | 5402 | case DECL_SAVE: |
23d075f4 | 5403 | t = gfc_add_save (¤t_attr, SAVE_EXPLICIT, NULL, &seen_at[d]); |
4ee9c684 | 5404 | break; |
5405 | ||
8e652fcf | 5406 | case DECL_AUTOMATIC: |
5407 | t = gfc_add_automatic (¤t_attr, NULL, &seen_at[d]); | |
5408 | break; | |
5409 | ||
4ee9c684 | 5410 | case DECL_TARGET: |
5411 | t = gfc_add_target (¤t_attr, &seen_at[d]); | |
5412 | break; | |
5413 | ||
c5d33754 | 5414 | case DECL_IS_BIND_C: |
5415 | t = gfc_add_is_bind_c(¤t_attr, NULL, &seen_at[d], 0); | |
5416 | break; | |
8db94b3b | 5417 | |
8f6339b6 | 5418 | case DECL_VALUE: |
60e19868 | 5419 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE attribute at %C")) |
5420 | t = false; | |
8f6339b6 | 5421 | else |
5422 | t = gfc_add_value (¤t_attr, NULL, &seen_at[d]); | |
5423 | break; | |
5424 | ||
ef814c81 | 5425 | case DECL_VOLATILE: |
60e19868 | 5426 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE attribute at %C")) |
5427 | t = false; | |
ef814c81 | 5428 | else |
5429 | t = gfc_add_volatile (¤t_attr, NULL, &seen_at[d]); | |
5430 | break; | |
5431 | ||
4ee9c684 | 5432 | default: |
5433 | gfc_internal_error ("match_attr_spec(): Bad attribute"); | |
5434 | } | |
5435 | ||
60e19868 | 5436 | if (!t) |
4ee9c684 | 5437 | { |
5438 | m = MATCH_ERROR; | |
5439 | goto cleanup; | |
5440 | } | |
5441 | } | |
5442 | ||
c25834c9 | 5443 | /* Since Fortran 2008 module variables implicitly have the SAVE attribute. */ |
4b8eb6ca | 5444 | if ((gfc_current_state () == COMP_MODULE |
5445 | || gfc_current_state () == COMP_SUBMODULE) | |
5446 | && !current_attr.save | |
c25834c9 | 5447 | && (gfc_option.allow_std & GFC_STD_F2008) != 0) |
23d075f4 | 5448 | current_attr.save = SAVE_IMPLICIT; |
5449 | ||
4ee9c684 | 5450 | colon_seen = 1; |
5451 | return MATCH_YES; | |
5452 | ||
5453 | cleanup: | |
cbb9e6aa | 5454 | gfc_current_locus = start; |
4ee9c684 | 5455 | gfc_free_array_spec (current_as); |
5456 | current_as = NULL; | |
8ef2cf76 | 5457 | attr_seen = 0; |
4ee9c684 | 5458 | return m; |
5459 | } | |
5460 | ||
5461 | ||
c5d33754 | 5462 | /* Set the binding label, dest_label, either with the binding label |
5463 | stored in the given gfc_typespec, ts, or if none was provided, it | |
5464 | will be the symbol name in all lower case, as required by the draft | |
5465 | (J3/04-007, section 15.4.1). If a binding label was given and | |
5466 | there is more than one argument (num_idents), it is an error. */ | |
5467 | ||
60e19868 | 5468 | static bool |
8db94b3b | 5469 | set_binding_label (const char **dest_label, const char *sym_name, |
1d8a57d8 | 5470 | int num_idents) |
c5d33754 | 5471 | { |
825718f9 | 5472 | if (num_idents > 1 && has_name_equals) |
c5d33754 | 5473 | { |
825718f9 | 5474 | gfc_error ("Multiple identifiers provided with " |
5475 | "single NAME= specifier at %C"); | |
60e19868 | 5476 | return false; |
825718f9 | 5477 | } |
c5d33754 | 5478 | |
7b2060ba | 5479 | if (curr_binding_label) |
df084314 | 5480 | /* Binding label given; store in temp holder till have sym. */ |
7b2060ba | 5481 | *dest_label = curr_binding_label; |
c5d33754 | 5482 | else |
5483 | { | |
5484 | /* No binding label given, and the NAME= specifier did not exist, | |
5485 | which means there was no NAME="". */ | |
5486 | if (sym_name != NULL && has_name_equals == 0) | |
7b2060ba | 5487 | *dest_label = IDENTIFIER_POINTER (get_identifier (sym_name)); |
c5d33754 | 5488 | } |
8db94b3b | 5489 | |
60e19868 | 5490 | return true; |
c5d33754 | 5491 | } |
5492 | ||
5493 | ||
5494 | /* Set the status of the given common block as being BIND(C) or not, | |
5495 | depending on the given parameter, is_bind_c. */ | |
5496 | ||
5497 | void | |
5498 | set_com_block_bind_c (gfc_common_head *com_block, int is_bind_c) | |
5499 | { | |
5500 | com_block->is_bind_c = is_bind_c; | |
5501 | return; | |
5502 | } | |
5503 | ||
5504 | ||
5505 | /* Verify that the given gfc_typespec is for a C interoperable type. */ | |
5506 | ||
60e19868 | 5507 | bool |
2564c57a | 5508 | gfc_verify_c_interop (gfc_typespec *ts) |
c5d33754 | 5509 | { |
eeebe20b | 5510 | if (ts->type == BT_DERIVED && ts->u.derived != NULL) |
5f9b1308 | 5511 | return (ts->u.derived->ts.is_c_interop || ts->u.derived->attr.is_bind_c) |
60e19868 | 5512 | ? true : false; |
2564c57a | 5513 | else if (ts->type == BT_CLASS) |
60e19868 | 5514 | return false; |
8c2d8d6d | 5515 | else if (ts->is_c_interop != 1 && ts->type != BT_ASSUMED) |
60e19868 | 5516 | return false; |
8c2d8d6d | 5517 | |
60e19868 | 5518 | return true; |
c5d33754 | 5519 | } |
5520 | ||
5521 | ||
5522 | /* Verify that the variables of a given common block, which has been | |
5523 | defined with the attribute specifier bind(c), to be of a C | |
5524 | interoperable type. Errors will be reported here, if | |
5525 | encountered. */ | |
5526 | ||
60e19868 | 5527 | bool |
c5d33754 | 5528 | verify_com_block_vars_c_interop (gfc_common_head *com_block) |
5529 | { | |
5530 | gfc_symbol *curr_sym = NULL; | |
60e19868 | 5531 | bool retval = true; |
c5d33754 | 5532 | |
5533 | curr_sym = com_block->head; | |
8db94b3b | 5534 | |
c5d33754 | 5535 | /* Make sure we have at least one symbol. */ |
5536 | if (curr_sym == NULL) | |
5537 | return retval; | |
5538 | ||
5539 | /* Here we know we have a symbol, so we'll execute this loop | |
5540 | at least once. */ | |
5541 | do | |
5542 | { | |
5543 | /* The second to last param, 1, says this is in a common block. */ | |
5544 | retval = verify_bind_c_sym (curr_sym, &(curr_sym->ts), 1, com_block); | |
5545 | curr_sym = curr_sym->common_next; | |
8db94b3b | 5546 | } while (curr_sym != NULL); |
c5d33754 | 5547 | |
5548 | return retval; | |
5549 | } | |
5550 | ||
5551 | ||
5552 | /* Verify that a given BIND(C) symbol is C interoperable. If it is not, | |
5553 | an appropriate error message is reported. */ | |
5554 | ||
60e19868 | 5555 | bool |
c5d33754 | 5556 | verify_bind_c_sym (gfc_symbol *tmp_sym, gfc_typespec *ts, |
5557 | int is_in_common, gfc_common_head *com_block) | |
5558 | { | |
1f2ab120 | 5559 | bool bind_c_function = false; |
60e19868 | 5560 | bool retval = true; |
4f7bb9ec | 5561 | |
1f2ab120 | 5562 | if (tmp_sym->attr.function && tmp_sym->attr.is_bind_c) |
5563 | bind_c_function = true; | |
5564 | ||
4f7bb9ec | 5565 | if (tmp_sym->attr.function && tmp_sym->result != NULL) |
5566 | { | |
5567 | tmp_sym = tmp_sym->result; | |
5568 | /* Make sure it wasn't an implicitly typed result. */ | |
bf79c656 | 5569 | if (tmp_sym->attr.implicit_type && warn_c_binding_type) |
4f7bb9ec | 5570 | { |
4166acc7 | 5571 | gfc_warning (OPT_Wc_binding_type, |
5572 | "Implicitly declared BIND(C) function %qs at " | |
4f7bb9ec | 5573 | "%L may not be C interoperable", tmp_sym->name, |
5574 | &tmp_sym->declared_at); | |
5575 | tmp_sym->ts.f90_type = tmp_sym->ts.type; | |
5576 | /* Mark it as C interoperable to prevent duplicate warnings. */ | |
5577 | tmp_sym->ts.is_c_interop = 1; | |
5578 | tmp_sym->attr.is_c_interop = 1; | |
5579 | } | |
5580 | } | |
1f2ab120 | 5581 | |
c5d33754 | 5582 | /* Here, we know we have the bind(c) attribute, so if we have |
5583 | enough type info, then verify that it's a C interop kind. | |
5584 | The info could be in the symbol already, or possibly still in | |
5585 | the given ts (current_ts), so look in both. */ | |
8db94b3b | 5586 | if (tmp_sym->ts.type != BT_UNKNOWN || ts->type != BT_UNKNOWN) |
c5d33754 | 5587 | { |
60e19868 | 5588 | if (!gfc_verify_c_interop (&(tmp_sym->ts))) |
c5d33754 | 5589 | { |
5590 | /* See if we're dealing with a sym in a common block or not. */ | |
bf79c656 | 5591 | if (is_in_common == 1 && warn_c_binding_type) |
c5d33754 | 5592 | { |
4166acc7 | 5593 | gfc_warning (OPT_Wc_binding_type, |
5594 | "Variable %qs in common block %qs at %L " | |
c5d33754 | 5595 | "may not be a C interoperable " |
4166acc7 | 5596 | "kind though common block %qs is BIND(C)", |
c5d33754 | 5597 | tmp_sym->name, com_block->name, |
5598 | &(tmp_sym->declared_at), com_block->name); | |
5599 | } | |
5600 | else | |
5601 | { | |
5602 | if (tmp_sym->ts.type == BT_DERIVED || ts->type == BT_DERIVED) | |
716da296 | 5603 | gfc_error ("Type declaration %qs at %L is not C " |
c5d33754 | 5604 | "interoperable but it is BIND(C)", |
5605 | tmp_sym->name, &(tmp_sym->declared_at)); | |
bf79c656 | 5606 | else if (warn_c_binding_type) |
4166acc7 | 5607 | gfc_warning (OPT_Wc_binding_type, "Variable %qs at %L " |
c5d33754 | 5608 | "may not be a C interoperable " |
716da296 | 5609 | "kind but it is BIND(C)", |
c5d33754 | 5610 | tmp_sym->name, &(tmp_sym->declared_at)); |
5611 | } | |
5612 | } | |
8db94b3b | 5613 | |
c5d33754 | 5614 | /* Variables declared w/in a common block can't be bind(c) |
5615 | since there's no way for C to see these variables, so there's | |
5616 | semantically no reason for the attribute. */ | |
5617 | if (is_in_common == 1 && tmp_sym->attr.is_bind_c == 1) | |
5618 | { | |
716da296 | 5619 | gfc_error ("Variable %qs in common block %qs at " |
c5d33754 | 5620 | "%L cannot be declared with BIND(C) " |
5621 | "since it is not a global", | |
5622 | tmp_sym->name, com_block->name, | |
5623 | &(tmp_sym->declared_at)); | |
60e19868 | 5624 | retval = false; |
c5d33754 | 5625 | } |
8db94b3b | 5626 | |
c5d33754 | 5627 | /* Scalar variables that are bind(c) can not have the pointer |
5628 | or allocatable attributes. */ | |
5629 | if (tmp_sym->attr.is_bind_c == 1) | |
5630 | { | |
5631 | if (tmp_sym->attr.pointer == 1) | |
5632 | { | |
716da296 | 5633 | gfc_error ("Variable %qs at %L cannot have both the " |
c5d33754 | 5634 | "POINTER and BIND(C) attributes", |
5635 | tmp_sym->name, &(tmp_sym->declared_at)); | |
60e19868 | 5636 | retval = false; |
c5d33754 | 5637 | } |
5638 | ||
5639 | if (tmp_sym->attr.allocatable == 1) | |
5640 | { | |
716da296 | 5641 | gfc_error ("Variable %qs at %L cannot have both the " |
c5d33754 | 5642 | "ALLOCATABLE and BIND(C) attributes", |
5643 | tmp_sym->name, &(tmp_sym->declared_at)); | |
60e19868 | 5644 | retval = false; |
c5d33754 | 5645 | } |
5646 | ||
1f2ab120 | 5647 | } |
5648 | ||
5649 | /* If it is a BIND(C) function, make sure the return value is a | |
5650 | scalar value. The previous tests in this function made sure | |
5651 | the type is interoperable. */ | |
5652 | if (bind_c_function && tmp_sym->as != NULL) | |
716da296 | 5653 | gfc_error ("Return type of BIND(C) function %qs at %L cannot " |
1f2ab120 | 5654 | "be an array", tmp_sym->name, &(tmp_sym->declared_at)); |
5655 | ||
5656 | /* BIND(C) functions can not return a character string. */ | |
5657 | if (bind_c_function && tmp_sym->ts.type == BT_CHARACTER) | |
eeebe20b | 5658 | if (tmp_sym->ts.u.cl == NULL || tmp_sym->ts.u.cl->length == NULL |
5659 | || tmp_sym->ts.u.cl->length->expr_type != EXPR_CONSTANT | |
5660 | || mpz_cmp_si (tmp_sym->ts.u.cl->length->value.integer, 1) != 0) | |
f6c28593 | 5661 | gfc_error ("Return type of BIND(C) function %qs of character " |
c014d57d | 5662 | "type at %L must have length 1", tmp_sym->name, |
c5d33754 | 5663 | &(tmp_sym->declared_at)); |
c5d33754 | 5664 | } |
5665 | ||
5666 | /* See if the symbol has been marked as private. If it has, make sure | |
5667 | there is no binding label and warn the user if there is one. */ | |
5668 | if (tmp_sym->attr.access == ACCESS_PRIVATE | |
7b2060ba | 5669 | && tmp_sym->binding_label) |
c5d33754 | 5670 | /* Use gfc_warning_now because we won't say that the symbol fails |
5671 | just because of this. */ | |
6f521718 | 5672 | gfc_warning_now (0, "Symbol %qs at %L is marked PRIVATE but has been " |
bf79c656 | 5673 | "given the binding label %qs", tmp_sym->name, |
c5d33754 | 5674 | &(tmp_sym->declared_at), tmp_sym->binding_label); |
5675 | ||
5676 | return retval; | |
5677 | } | |
5678 | ||
5679 | ||
5680 | /* Set the appropriate fields for a symbol that's been declared as | |
5681 | BIND(C) (the is_bind_c flag and the binding label), and verify that | |
5682 | the type is C interoperable. Errors are reported by the functions | |
5683 | used to set/test these fields. */ | |
5684 | ||
60e19868 | 5685 | bool |
c5d33754 | 5686 | set_verify_bind_c_sym (gfc_symbol *tmp_sym, int num_idents) |
5687 | { | |
60e19868 | 5688 | bool retval = true; |
8db94b3b | 5689 | |
c5d33754 | 5690 | /* TODO: Do we need to make sure the vars aren't marked private? */ |
5691 | ||
5692 | /* Set the is_bind_c bit in symbol_attribute. */ | |
5693 | gfc_add_is_bind_c (&(tmp_sym->attr), tmp_sym->name, &gfc_current_locus, 0); | |
5694 | ||
60e19868 | 5695 | if (!set_binding_label (&tmp_sym->binding_label, tmp_sym->name, num_idents)) |
5696 | return false; | |
c5d33754 | 5697 | |
5698 | return retval; | |
5699 | } | |
5700 | ||
5701 | ||
5702 | /* Set the fields marking the given common block as BIND(C), including | |
5703 | a binding label, and report any errors encountered. */ | |
5704 | ||
60e19868 | 5705 | bool |
c5d33754 | 5706 | set_verify_bind_c_com_block (gfc_common_head *com_block, int num_idents) |
5707 | { | |
60e19868 | 5708 | bool retval = true; |
8db94b3b | 5709 | |
c5d33754 | 5710 | /* destLabel, common name, typespec (which may have binding label). */ |
76e207a9 | 5711 | if (!set_binding_label (&com_block->binding_label, com_block->name, |
60e19868 | 5712 | num_idents)) |
5713 | return false; | |
c5d33754 | 5714 | |
5715 | /* Set the given common block (com_block) to being bind(c) (1). */ | |
5716 | set_com_block_bind_c (com_block, 1); | |
5717 | ||
5718 | return retval; | |
5719 | } | |
5720 | ||
5721 | ||
5722 | /* Retrieve the list of one or more identifiers that the given bind(c) | |
5723 | attribute applies to. */ | |
5724 | ||
60e19868 | 5725 | bool |
c5d33754 | 5726 | get_bind_c_idents (void) |
5727 | { | |
5728 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5729 | int num_idents = 0; | |
5730 | gfc_symbol *tmp_sym = NULL; | |
5731 | match found_id; | |
5732 | gfc_common_head *com_block = NULL; | |
8db94b3b | 5733 | |
c5d33754 | 5734 | if (gfc_match_name (name) == MATCH_YES) |
5735 | { | |
5736 | found_id = MATCH_YES; | |
5737 | gfc_get_ha_symbol (name, &tmp_sym); | |
5738 | } | |
5739 | else if (match_common_name (name) == MATCH_YES) | |
5740 | { | |
5741 | found_id = MATCH_YES; | |
5742 | com_block = gfc_get_common (name, 0); | |
5743 | } | |
5744 | else | |
5745 | { | |
5746 | gfc_error ("Need either entity or common block name for " | |
5747 | "attribute specification statement at %C"); | |
60e19868 | 5748 | return false; |
c5d33754 | 5749 | } |
8db94b3b | 5750 | |
c5d33754 | 5751 | /* Save the current identifier and look for more. */ |
5752 | do | |
5753 | { | |
5754 | /* Increment the number of identifiers found for this spec stmt. */ | |
5755 | num_idents++; | |
5756 | ||
5757 | /* Make sure we have a sym or com block, and verify that it can | |
5758 | be bind(c). Set the appropriate field(s) and look for more | |
5759 | identifiers. */ | |
8db94b3b | 5760 | if (tmp_sym != NULL || com_block != NULL) |
c5d33754 | 5761 | { |
5762 | if (tmp_sym != NULL) | |
5763 | { | |
60e19868 | 5764 | if (!set_verify_bind_c_sym (tmp_sym, num_idents)) |
5765 | return false; | |
c5d33754 | 5766 | } |
5767 | else | |
5768 | { | |
60e19868 | 5769 | if (!set_verify_bind_c_com_block (com_block, num_idents)) |
5770 | return false; | |
c5d33754 | 5771 | } |
8db94b3b | 5772 | |
c5d33754 | 5773 | /* Look to see if we have another identifier. */ |
5774 | tmp_sym = NULL; | |
5775 | if (gfc_match_eos () == MATCH_YES) | |
5776 | found_id = MATCH_NO; | |
5777 | else if (gfc_match_char (',') != MATCH_YES) | |
5778 | found_id = MATCH_NO; | |
5779 | else if (gfc_match_name (name) == MATCH_YES) | |
5780 | { | |
5781 | found_id = MATCH_YES; | |
5782 | gfc_get_ha_symbol (name, &tmp_sym); | |
5783 | } | |
5784 | else if (match_common_name (name) == MATCH_YES) | |
5785 | { | |
5786 | found_id = MATCH_YES; | |
5787 | com_block = gfc_get_common (name, 0); | |
5788 | } | |
5789 | else | |
5790 | { | |
5791 | gfc_error ("Missing entity or common block name for " | |
5792 | "attribute specification statement at %C"); | |
60e19868 | 5793 | return false; |
c5d33754 | 5794 | } |
5795 | } | |
5796 | else | |
5797 | { | |
5798 | gfc_internal_error ("Missing symbol"); | |
5799 | } | |
5800 | } while (found_id == MATCH_YES); | |
5801 | ||
5802 | /* if we get here we were successful */ | |
60e19868 | 5803 | return true; |
c5d33754 | 5804 | } |
5805 | ||
5806 | ||
5807 | /* Try and match a BIND(C) attribute specification statement. */ | |
8db94b3b | 5808 | |
c5d33754 | 5809 | match |
5810 | gfc_match_bind_c_stmt (void) | |
5811 | { | |
5812 | match found_match = MATCH_NO; | |
5813 | gfc_typespec *ts; | |
5814 | ||
5815 | ts = ¤t_ts; | |
8db94b3b | 5816 | |
c5d33754 | 5817 | /* This may not be necessary. */ |
5818 | gfc_clear_ts (ts); | |
5819 | /* Clear the temporary binding label holder. */ | |
7b2060ba | 5820 | curr_binding_label = NULL; |
c5d33754 | 5821 | |
5822 | /* Look for the bind(c). */ | |
75ae7f6c | 5823 | found_match = gfc_match_bind_c (NULL, true); |
c5d33754 | 5824 | |
5825 | if (found_match == MATCH_YES) | |
5826 | { | |
7a914593 | 5827 | if (!gfc_notify_std (GFC_STD_F2003, "BIND(C) statement at %C")) |
5828 | return MATCH_ERROR; | |
5829 | ||
c5d33754 | 5830 | /* Look for the :: now, but it is not required. */ |
5831 | gfc_match (" :: "); | |
5832 | ||
5833 | /* Get the identifier(s) that needs to be updated. This may need to | |
5834 | change to hand the flag(s) for the attr specified so all identifiers | |
5835 | found can have all appropriate parts updated (assuming that the same | |
5836 | spec stmt can have multiple attrs, such as both bind(c) and | |
5837 | allocatable...). */ | |
60e19868 | 5838 | if (!get_bind_c_idents ()) |
c5d33754 | 5839 | /* Error message should have printed already. */ |
5840 | return MATCH_ERROR; | |
5841 | } | |
5842 | ||
5843 | return found_match; | |
5844 | } | |
5845 | ||
5846 | ||
4ee9c684 | 5847 | /* Match a data declaration statement. */ |
5848 | ||
5849 | match | |
5850 | gfc_match_data_decl (void) | |
5851 | { | |
5852 | gfc_symbol *sym; | |
5853 | match m; | |
3923b69f | 5854 | int elem; |
4ee9c684 | 5855 | |
9d958d5b | 5856 | type_param_spec_list = NULL; |
5857 | decl_type_param_list = NULL; | |
5858 | ||
c5d33754 | 5859 | num_idents_on_line = 0; |
8db94b3b | 5860 | |
e8152f13 | 5861 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
4ee9c684 | 5862 | if (m != MATCH_YES) |
5863 | return m; | |
5864 | ||
b3704193 | 5865 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
d7cd448a | 5866 | && !gfc_comp_struct (gfc_current_state ())) |
4ee9c684 | 5867 | { |
eeebe20b | 5868 | sym = gfc_use_derived (current_ts.u.derived); |
4ee9c684 | 5869 | |
5870 | if (sym == NULL) | |
5871 | { | |
5872 | m = MATCH_ERROR; | |
5873 | goto cleanup; | |
5874 | } | |
5875 | ||
eeebe20b | 5876 | current_ts.u.derived = sym; |
4ee9c684 | 5877 | } |
5878 | ||
5879 | m = match_attr_spec (); | |
5880 | if (m == MATCH_ERROR) | |
5881 | { | |
5882 | m = MATCH_NO; | |
5883 | goto cleanup; | |
5884 | } | |
5885 | ||
a90fe829 | 5886 | if (current_ts.type == BT_CLASS |
5887 | && current_ts.u.derived->attr.unlimited_polymorphic) | |
5888 | goto ok; | |
5889 | ||
b3704193 | 5890 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
5891 | && current_ts.u.derived->components == NULL | |
eeebe20b | 5892 | && !current_ts.u.derived->attr.zero_comp) |
4ee9c684 | 5893 | { |
5894 | ||
d7cd448a | 5895 | if (current_attr.pointer && gfc_comp_struct (gfc_current_state ())) |
4ee9c684 | 5896 | goto ok; |
5897 | ||
2fbfb5cf | 5898 | if (current_attr.allocatable && gfc_current_state () == COMP_DERIVED) |
dd7553fe | 5899 | goto ok; |
5900 | ||
eeebe20b | 5901 | gfc_find_symbol (current_ts.u.derived->name, |
d67dd34f | 5902 | current_ts.u.derived->ns, 1, &sym); |
4ee9c684 | 5903 | |
40cf8078 | 5904 | /* Any symbol that we find had better be a type definition |
d7cd448a | 5905 | which has its components defined, or be a structure definition |
5906 | actively being parsed. */ | |
5907 | if (sym != NULL && gfc_fl_struct (sym->attr.flavor) | |
eeebe20b | 5908 | && (current_ts.u.derived->components != NULL |
d7cd448a | 5909 | || current_ts.u.derived->attr.zero_comp |
5910 | || current_ts.u.derived == gfc_new_block)) | |
4ee9c684 | 5911 | goto ok; |
5912 | ||
a1e76cd9 | 5913 | gfc_error ("Derived type at %C has not been previously defined " |
5914 | "and so cannot appear in a derived type definition"); | |
5915 | m = MATCH_ERROR; | |
5916 | goto cleanup; | |
4ee9c684 | 5917 | } |
5918 | ||
5919 | ok: | |
5920 | /* If we have an old-style character declaration, and no new-style | |
5921 | attribute specifications, then there a comma is optional between | |
5922 | the type specification and the variable list. */ | |
5923 | if (m == MATCH_NO && current_ts.type == BT_CHARACTER && old_char_selector) | |
5924 | gfc_match_char (','); | |
5925 | ||
3923b69f | 5926 | /* Give the types/attributes to symbols that follow. Give the element |
5927 | a number so that repeat character length expressions can be copied. */ | |
5928 | elem = 1; | |
4ee9c684 | 5929 | for (;;) |
5930 | { | |
c5d33754 | 5931 | num_idents_on_line++; |
3923b69f | 5932 | m = variable_decl (elem++); |
4ee9c684 | 5933 | if (m == MATCH_ERROR) |
5934 | goto cleanup; | |
5935 | if (m == MATCH_NO) | |
5936 | break; | |
5937 | ||
5938 | if (gfc_match_eos () == MATCH_YES) | |
5939 | goto cleanup; | |
5940 | if (gfc_match_char (',') != MATCH_YES) | |
5941 | break; | |
5942 | } | |
5943 | ||
389e3a5e | 5944 | if (!gfc_error_flag_test ()) |
c717a688 | 5945 | { |
5946 | /* An anonymous structure declaration is unambiguous; if we matched one | |
5947 | according to gfc_match_structure_decl, we need to return MATCH_YES | |
5948 | here to avoid confusing the remaining matchers, even if there was an | |
5949 | error during variable_decl. We must flush any such errors. Note this | |
5950 | causes the parser to gracefully continue parsing the remaining input | |
5951 | as a structure body, which likely follows. */ | |
5952 | if (current_ts.type == BT_DERIVED && current_ts.u.derived | |
5953 | && gfc_fl_struct (current_ts.u.derived->attr.flavor)) | |
5954 | { | |
5955 | gfc_error_now ("Syntax error in anonymous structure declaration" | |
5956 | " at %C"); | |
5957 | /* Skip the bad variable_decl and line up for the start of the | |
5958 | structure body. */ | |
5959 | gfc_error_recovery (); | |
5960 | m = MATCH_YES; | |
5961 | goto cleanup; | |
5962 | } | |
5963 | ||
5964 | gfc_error ("Syntax error in data declaration at %C"); | |
5965 | } | |
5966 | ||
4ee9c684 | 5967 | m = MATCH_ERROR; |
5968 | ||
af29c1f0 | 5969 | gfc_free_data_all (gfc_current_ns); |
5970 | ||
4ee9c684 | 5971 | cleanup: |
9d958d5b | 5972 | if (saved_kind_expr) |
5973 | gfc_free_expr (saved_kind_expr); | |
5974 | if (type_param_spec_list) | |
5975 | gfc_free_actual_arglist (type_param_spec_list); | |
5976 | if (decl_type_param_list) | |
5977 | gfc_free_actual_arglist (decl_type_param_list); | |
5978 | saved_kind_expr = NULL; | |
4ee9c684 | 5979 | gfc_free_array_spec (current_as); |
5980 | current_as = NULL; | |
5981 | return m; | |
5982 | } | |
5983 | ||
5984 | ||
5985 | /* Match a prefix associated with a function or subroutine | |
5986 | declaration. If the typespec pointer is nonnull, then a typespec | |
5987 | can be matched. Note that if nothing matches, MATCH_YES is | |
5988 | returned (the null string was matched). */ | |
5989 | ||
077932f9 | 5990 | match |
5991 | gfc_match_prefix (gfc_typespec *ts) | |
4ee9c684 | 5992 | { |
5b11d932 | 5993 | bool seen_type; |
4e4ea00b | 5994 | bool seen_impure; |
5995 | bool found_prefix; | |
4ee9c684 | 5996 | |
5997 | gfc_clear_attr (¤t_attr); | |
4e4ea00b | 5998 | seen_type = false; |
5999 | seen_impure = false; | |
4ee9c684 | 6000 | |
d1645c7b | 6001 | gcc_assert (!gfc_matching_prefix); |
6002 | gfc_matching_prefix = true; | |
40de255b | 6003 | |
4e4ea00b | 6004 | do |
4ee9c684 | 6005 | { |
4e4ea00b | 6006 | found_prefix = false; |
4ee9c684 | 6007 | |
76e207a9 | 6008 | /* MODULE is a prefix like PURE, ELEMENTAL, etc., having a |
6009 | corresponding attribute seems natural and distinguishes these | |
6010 | procedures from procedure types of PROC_MODULE, which these are | |
6011 | as well. */ | |
6012 | if (gfc_match ("module% ") == MATCH_YES) | |
6013 | { | |
6014 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE prefix at %C")) | |
6015 | goto error; | |
6016 | ||
6017 | current_attr.module_procedure = 1; | |
6018 | found_prefix = true; | |
6019 | } | |
6020 | ||
4e4ea00b | 6021 | if (!seen_type && ts != NULL |
6022 | && gfc_match_decl_type_spec (ts, 0) == MATCH_YES | |
6023 | && gfc_match_space () == MATCH_YES) | |
6024 | { | |
4ee9c684 | 6025 | |
4e4ea00b | 6026 | seen_type = true; |
6027 | found_prefix = true; | |
6028 | } | |
6029 | ||
6030 | if (gfc_match ("elemental% ") == MATCH_YES) | |
6031 | { | |
60e19868 | 6032 | if (!gfc_add_elemental (¤t_attr, NULL)) |
4e4ea00b | 6033 | goto error; |
6034 | ||
6035 | found_prefix = true; | |
6036 | } | |
6037 | ||
6038 | if (gfc_match ("pure% ") == MATCH_YES) | |
6039 | { | |
60e19868 | 6040 | if (!gfc_add_pure (¤t_attr, NULL)) |
4e4ea00b | 6041 | goto error; |
6042 | ||
6043 | found_prefix = true; | |
6044 | } | |
4ee9c684 | 6045 | |
4e4ea00b | 6046 | if (gfc_match ("recursive% ") == MATCH_YES) |
6047 | { | |
60e19868 | 6048 | if (!gfc_add_recursive (¤t_attr, NULL)) |
4e4ea00b | 6049 | goto error; |
6050 | ||
6051 | found_prefix = true; | |
6052 | } | |
6053 | ||
6054 | /* IMPURE is a somewhat special case, as it needs not set an actual | |
6055 | attribute but rather only prevents ELEMENTAL routines from being | |
6056 | automatically PURE. */ | |
6057 | if (gfc_match ("impure% ") == MATCH_YES) | |
6058 | { | |
60e19868 | 6059 | if (!gfc_notify_std (GFC_STD_F2008, "IMPURE procedure at %C")) |
4e4ea00b | 6060 | goto error; |
6061 | ||
6062 | seen_impure = true; | |
6063 | found_prefix = true; | |
6064 | } | |
4ee9c684 | 6065 | } |
4e4ea00b | 6066 | while (found_prefix); |
4ee9c684 | 6067 | |
4e4ea00b | 6068 | /* IMPURE and PURE must not both appear, of course. */ |
6069 | if (seen_impure && current_attr.pure) | |
4ee9c684 | 6070 | { |
4e4ea00b | 6071 | gfc_error ("PURE and IMPURE must not appear both at %C"); |
6072 | goto error; | |
4ee9c684 | 6073 | } |
6074 | ||
4e4ea00b | 6075 | /* If IMPURE it not seen but the procedure is ELEMENTAL, mark it as PURE. */ |
6076 | if (!seen_impure && current_attr.elemental && !current_attr.pure) | |
4ee9c684 | 6077 | { |
60e19868 | 6078 | if (!gfc_add_pure (¤t_attr, NULL)) |
40de255b | 6079 | goto error; |
4ee9c684 | 6080 | } |
6081 | ||
6082 | /* At this point, the next item is not a prefix. */ | |
d1645c7b | 6083 | gcc_assert (gfc_matching_prefix); |
4b8eb6ca | 6084 | |
d1645c7b | 6085 | gfc_matching_prefix = false; |
4ee9c684 | 6086 | return MATCH_YES; |
40de255b | 6087 | |
6088 | error: | |
d1645c7b | 6089 | gcc_assert (gfc_matching_prefix); |
6090 | gfc_matching_prefix = false; | |
40de255b | 6091 | return MATCH_ERROR; |
4ee9c684 | 6092 | } |
6093 | ||
6094 | ||
077932f9 | 6095 | /* Copy attributes matched by gfc_match_prefix() to attributes on a symbol. */ |
4ee9c684 | 6096 | |
60e19868 | 6097 | static bool |
1a9745d2 | 6098 | copy_prefix (symbol_attribute *dest, locus *where) |
4ee9c684 | 6099 | { |
7d7125df | 6100 | if (dest->module_procedure) |
6101 | { | |
6102 | if (current_attr.elemental) | |
6103 | dest->elemental = 1; | |
6104 | ||
6105 | if (current_attr.pure) | |
6106 | dest->pure = 1; | |
6107 | ||
6108 | if (current_attr.recursive) | |
6109 | dest->recursive = 1; | |
6110 | ||
6111 | /* Module procedures are unusual in that the 'dest' is copied from | |
6112 | the interface declaration. However, this is an oportunity to | |
6113 | check that the submodule declaration is compliant with the | |
6114 | interface. */ | |
6115 | if (dest->elemental && !current_attr.elemental) | |
6116 | { | |
6117 | gfc_error ("ELEMENTAL prefix in MODULE PROCEDURE interface is " | |
6118 | "missing at %L", where); | |
6119 | return false; | |
6120 | } | |
6121 | ||
6122 | if (dest->pure && !current_attr.pure) | |
6123 | { | |
6124 | gfc_error ("PURE prefix in MODULE PROCEDURE interface is " | |
6125 | "missing at %L", where); | |
6126 | return false; | |
6127 | } | |
6128 | ||
6129 | if (dest->recursive && !current_attr.recursive) | |
6130 | { | |
6131 | gfc_error ("RECURSIVE prefix in MODULE PROCEDURE interface is " | |
6132 | "missing at %L", where); | |
6133 | return false; | |
6134 | } | |
6135 | ||
6136 | return true; | |
6137 | } | |
4ee9c684 | 6138 | |
60e19868 | 6139 | if (current_attr.elemental && !gfc_add_elemental (dest, where)) |
6140 | return false; | |
4ee9c684 | 6141 | |
7d7125df | 6142 | if (current_attr.pure && !gfc_add_pure (dest, where)) |
6143 | return false; | |
6144 | ||
60e19868 | 6145 | if (current_attr.recursive && !gfc_add_recursive (dest, where)) |
6146 | return false; | |
4ee9c684 | 6147 | |
60e19868 | 6148 | return true; |
4ee9c684 | 6149 | } |
6150 | ||
6151 | ||
9d958d5b | 6152 | /* Match a formal argument list or, if typeparam is true, a |
6153 | type_param_name_list. */ | |
4ee9c684 | 6154 | |
6155 | match | |
9d958d5b | 6156 | gfc_match_formal_arglist (gfc_symbol *progname, int st_flag, |
6157 | int null_flag, bool typeparam) | |
4ee9c684 | 6158 | { |
6159 | gfc_formal_arglist *head, *tail, *p, *q; | |
6160 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6161 | gfc_symbol *sym; | |
6162 | match m; | |
4b8eb6ca | 6163 | gfc_formal_arglist *formal = NULL; |
4ee9c684 | 6164 | |
6165 | head = tail = NULL; | |
6166 | ||
4b8eb6ca | 6167 | /* Keep the interface formal argument list and null it so that the |
6168 | matching for the new declaration can be done. The numbers and | |
6169 | names of the arguments are checked here. The interface formal | |
6170 | arguments are retained in formal_arglist and the characteristics | |
6171 | are compared in resolve.c(resolve_fl_procedure). See the remark | |
6172 | in get_proc_name about the eventual need to copy the formal_arglist | |
6173 | and populate the formal namespace of the interface symbol. */ | |
6174 | if (progname->attr.module_procedure | |
6175 | && progname->attr.host_assoc) | |
6176 | { | |
6177 | formal = progname->formal; | |
6178 | progname->formal = NULL; | |
6179 | } | |
6180 | ||
4ee9c684 | 6181 | if (gfc_match_char ('(') != MATCH_YES) |
6182 | { | |
6183 | if (null_flag) | |
6184 | goto ok; | |
6185 | return MATCH_NO; | |
6186 | } | |
6187 | ||
6188 | if (gfc_match_char (')') == MATCH_YES) | |
6189 | goto ok; | |
6190 | ||
6191 | for (;;) | |
6192 | { | |
6193 | if (gfc_match_char ('*') == MATCH_YES) | |
a5d831e5 | 6194 | { |
6195 | sym = NULL; | |
f0efd2e8 | 6196 | if (!typeparam && !gfc_notify_std (GFC_STD_F95_OBS, |
6197 | "Alternate-return argument at %C")) | |
a5d831e5 | 6198 | { |
6199 | m = MATCH_ERROR; | |
6200 | goto cleanup; | |
6201 | } | |
f0efd2e8 | 6202 | else if (typeparam) |
6203 | gfc_error_now ("A parameter name is required at %C"); | |
a5d831e5 | 6204 | } |
4ee9c684 | 6205 | else |
6206 | { | |
6207 | m = gfc_match_name (name); | |
6208 | if (m != MATCH_YES) | |
f0efd2e8 | 6209 | { |
6210 | if(typeparam) | |
6211 | gfc_error_now ("A parameter name is required at %C"); | |
6212 | goto cleanup; | |
6213 | } | |
4ee9c684 | 6214 | |
9d958d5b | 6215 | if (!typeparam && gfc_get_symbol (name, NULL, &sym)) |
6216 | goto cleanup; | |
6217 | else if (typeparam | |
6218 | && gfc_get_symbol (name, progname->f2k_derived, &sym)) | |
4ee9c684 | 6219 | goto cleanup; |
6220 | } | |
6221 | ||
6222 | p = gfc_get_formal_arglist (); | |
6223 | ||
6224 | if (head == NULL) | |
6225 | head = tail = p; | |
6226 | else | |
6227 | { | |
6228 | tail->next = p; | |
6229 | tail = p; | |
6230 | } | |
6231 | ||
6232 | tail->sym = sym; | |
6233 | ||
6234 | /* We don't add the VARIABLE flavor because the name could be a | |
1a9745d2 | 6235 | dummy procedure. We don't apply these attributes to formal |
6236 | arguments of statement functions. */ | |
4ee9c684 | 6237 | if (sym != NULL && !st_flag |
60e19868 | 6238 | && (!gfc_add_dummy(&sym->attr, sym->name, NULL) |
6239 | || !gfc_missing_attr (&sym->attr, NULL))) | |
4ee9c684 | 6240 | { |
6241 | m = MATCH_ERROR; | |
6242 | goto cleanup; | |
6243 | } | |
6244 | ||
6245 | /* The name of a program unit can be in a different namespace, | |
1a9745d2 | 6246 | so check for it explicitly. After the statement is accepted, |
6247 | the name is checked for especially in gfc_get_symbol(). */ | |
1148eb54 | 6248 | if (gfc_new_block != NULL && sym != NULL && !typeparam |
4ee9c684 | 6249 | && strcmp (sym->name, gfc_new_block->name) == 0) |
6250 | { | |
716da296 | 6251 | gfc_error ("Name %qs at %C is the name of the procedure", |
4ee9c684 | 6252 | sym->name); |
6253 | m = MATCH_ERROR; | |
6254 | goto cleanup; | |
6255 | } | |
6256 | ||
6257 | if (gfc_match_char (')') == MATCH_YES) | |
6258 | goto ok; | |
6259 | ||
6260 | m = gfc_match_char (','); | |
6261 | if (m != MATCH_YES) | |
6262 | { | |
1148eb54 | 6263 | if (typeparam) |
6264 | gfc_error_now ("Expected parameter list in type declaration " | |
6265 | "at %C"); | |
6266 | else | |
6267 | gfc_error ("Unexpected junk in formal argument list at %C"); | |
4ee9c684 | 6268 | goto cleanup; |
6269 | } | |
6270 | } | |
6271 | ||
6272 | ok: | |
6273 | /* Check for duplicate symbols in the formal argument list. */ | |
6274 | if (head != NULL) | |
6275 | { | |
6276 | for (p = head; p->next; p = p->next) | |
6277 | { | |
6278 | if (p->sym == NULL) | |
6279 | continue; | |
6280 | ||
6281 | for (q = p->next; q; q = q->next) | |
6282 | if (p->sym == q->sym) | |
6283 | { | |
1148eb54 | 6284 | if (typeparam) |
6285 | gfc_error_now ("Duplicate name %qs in parameter " | |
6286 | "list at %C", p->sym->name); | |
6287 | else | |
6288 | gfc_error ("Duplicate symbol %qs in formal argument " | |
6289 | "list at %C", p->sym->name); | |
4ee9c684 | 6290 | |
6291 | m = MATCH_ERROR; | |
6292 | goto cleanup; | |
6293 | } | |
6294 | } | |
6295 | } | |
6296 | ||
60e19868 | 6297 | if (!gfc_add_explicit_interface (progname, IFSRC_DECL, head, NULL)) |
4ee9c684 | 6298 | { |
6299 | m = MATCH_ERROR; | |
6300 | goto cleanup; | |
6301 | } | |
6302 | ||
cc78610f | 6303 | /* gfc_error_now used in following and return with MATCH_YES because |
6304 | doing otherwise results in a cascade of extraneous errors and in | |
6305 | some cases an ICE in symbol.c(gfc_release_symbol). */ | |
a23f57e2 | 6306 | if (progname->attr.module_procedure && progname->attr.host_assoc) |
4b8eb6ca | 6307 | { |
a23f57e2 | 6308 | bool arg_count_mismatch = false; |
6309 | ||
6310 | if (!formal && head) | |
6311 | arg_count_mismatch = true; | |
6312 | ||
6313 | /* Abbreviated module procedure declaration is not meant to have any | |
6314 | formal arguments! */ | |
cc78610f | 6315 | if (!progname->abr_modproc_decl && formal && !head) |
a23f57e2 | 6316 | arg_count_mismatch = true; |
6317 | ||
4b8eb6ca | 6318 | for (p = formal, q = head; p && q; p = p->next, q = q->next) |
6319 | { | |
6320 | if ((p->next != NULL && q->next == NULL) | |
6321 | || (p->next == NULL && q->next != NULL)) | |
a23f57e2 | 6322 | arg_count_mismatch = true; |
4b8eb6ca | 6323 | else if ((p->sym == NULL && q->sym == NULL) |
6324 | || strcmp (p->sym->name, q->sym->name) == 0) | |
6325 | continue; | |
6326 | else | |
6327 | gfc_error_now ("Mismatch in MODULE PROCEDURE formal " | |
6328 | "argument names (%s/%s) at %C", | |
6329 | p->sym->name, q->sym->name); | |
6330 | } | |
a23f57e2 | 6331 | |
6332 | if (arg_count_mismatch) | |
6333 | gfc_error_now ("Mismatch in number of MODULE PROCEDURE " | |
6334 | "formal arguments at %C"); | |
4b8eb6ca | 6335 | } |
6336 | ||
4ee9c684 | 6337 | return MATCH_YES; |
6338 | ||
6339 | cleanup: | |
6340 | gfc_free_formal_arglist (head); | |
6341 | return m; | |
6342 | } | |
6343 | ||
6344 | ||
6345 | /* Match a RESULT specification following a function declaration or | |
6346 | ENTRY statement. Also matches the end-of-statement. */ | |
6347 | ||
6348 | static match | |
f6d0e37a | 6349 | match_result (gfc_symbol *function, gfc_symbol **result) |
4ee9c684 | 6350 | { |
6351 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6352 | gfc_symbol *r; | |
6353 | match m; | |
6354 | ||
6355 | if (gfc_match (" result (") != MATCH_YES) | |
6356 | return MATCH_NO; | |
6357 | ||
6358 | m = gfc_match_name (name); | |
6359 | if (m != MATCH_YES) | |
6360 | return m; | |
6361 | ||
c5d33754 | 6362 | /* Get the right paren, and that's it because there could be the |
6363 | bind(c) attribute after the result clause. */ | |
60e19868 | 6364 | if (gfc_match_char (')') != MATCH_YES) |
4ee9c684 | 6365 | { |
c5d33754 | 6366 | /* TODO: should report the missing right paren here. */ |
4ee9c684 | 6367 | return MATCH_ERROR; |
6368 | } | |
6369 | ||
6370 | if (strcmp (function->name, name) == 0) | |
6371 | { | |
1a9745d2 | 6372 | gfc_error ("RESULT variable at %C must be different than function name"); |
4ee9c684 | 6373 | return MATCH_ERROR; |
6374 | } | |
6375 | ||
6376 | if (gfc_get_symbol (name, NULL, &r)) | |
6377 | return MATCH_ERROR; | |
6378 | ||
60e19868 | 6379 | if (!gfc_add_result (&r->attr, r->name, NULL)) |
4ee9c684 | 6380 | return MATCH_ERROR; |
6381 | ||
6382 | *result = r; | |
6383 | ||
6384 | return MATCH_YES; | |
6385 | } | |
6386 | ||
6387 | ||
c5d33754 | 6388 | /* Match a function suffix, which could be a combination of a result |
6389 | clause and BIND(C), either one, or neither. The draft does not | |
6390 | require them to come in a specific order. */ | |
6391 | ||
6392 | match | |
6393 | gfc_match_suffix (gfc_symbol *sym, gfc_symbol **result) | |
6394 | { | |
6395 | match is_bind_c; /* Found bind(c). */ | |
6396 | match is_result; /* Found result clause. */ | |
6397 | match found_match; /* Status of whether we've found a good match. */ | |
e0be6f02 | 6398 | char peek_char; /* Character we're going to peek at. */ |
75ae7f6c | 6399 | bool allow_binding_name; |
c5d33754 | 6400 | |
6401 | /* Initialize to having found nothing. */ | |
6402 | found_match = MATCH_NO; | |
8db94b3b | 6403 | is_bind_c = MATCH_NO; |
c5d33754 | 6404 | is_result = MATCH_NO; |
6405 | ||
6406 | /* Get the next char to narrow between result and bind(c). */ | |
6407 | gfc_gobble_whitespace (); | |
e0be6f02 | 6408 | peek_char = gfc_peek_ascii_char (); |
c5d33754 | 6409 | |
75ae7f6c | 6410 | /* C binding names are not allowed for internal procedures. */ |
6411 | if (gfc_current_state () == COMP_CONTAINS | |
6412 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
6413 | allow_binding_name = false; | |
6414 | else | |
6415 | allow_binding_name = true; | |
6416 | ||
c5d33754 | 6417 | switch (peek_char) |
6418 | { | |
6419 | case 'r': | |
6420 | /* Look for result clause. */ | |
6421 | is_result = match_result (sym, result); | |
6422 | if (is_result == MATCH_YES) | |
6423 | { | |
6424 | /* Now see if there is a bind(c) after it. */ | |
75ae7f6c | 6425 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
c5d33754 | 6426 | /* We've found the result clause and possibly bind(c). */ |
6427 | found_match = MATCH_YES; | |
6428 | } | |
6429 | else | |
6430 | /* This should only be MATCH_ERROR. */ | |
8db94b3b | 6431 | found_match = is_result; |
c5d33754 | 6432 | break; |
6433 | case 'b': | |
6434 | /* Look for bind(c) first. */ | |
75ae7f6c | 6435 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
c5d33754 | 6436 | if (is_bind_c == MATCH_YES) |
6437 | { | |
6438 | /* Now see if a result clause followed it. */ | |
6439 | is_result = match_result (sym, result); | |
6440 | found_match = MATCH_YES; | |
6441 | } | |
6442 | else | |
6443 | { | |
6444 | /* Should only be a MATCH_ERROR if we get here after seeing 'b'. */ | |
6445 | found_match = MATCH_ERROR; | |
6446 | } | |
6447 | break; | |
6448 | default: | |
6449 | gfc_error ("Unexpected junk after function declaration at %C"); | |
6450 | found_match = MATCH_ERROR; | |
6451 | break; | |
6452 | } | |
6453 | ||
c5d33754 | 6454 | if (is_bind_c == MATCH_YES) |
4518e961 | 6455 | { |
75ae7f6c | 6456 | /* Fortran 2008 draft allows BIND(C) for internal procedures. */ |
4518e961 | 6457 | if (gfc_current_state () == COMP_CONTAINS |
75ae7f6c | 6458 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
60e19868 | 6459 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
6460 | "at %L may not be specified for an internal " | |
6461 | "procedure", &gfc_current_locus)) | |
75ae7f6c | 6462 | return MATCH_ERROR; |
6463 | ||
60e19868 | 6464 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, &gfc_current_locus, 1)) |
4518e961 | 6465 | return MATCH_ERROR; |
6466 | } | |
8db94b3b | 6467 | |
c5d33754 | 6468 | return found_match; |
6469 | } | |
6470 | ||
6471 | ||
1e057e9b | 6472 | /* Procedure pointer return value without RESULT statement: |
6473 | Add "hidden" result variable named "ppr@". */ | |
6474 | ||
60e19868 | 6475 | static bool |
1e057e9b | 6476 | add_hidden_procptr_result (gfc_symbol *sym) |
6477 | { | |
6478 | bool case1,case2; | |
6479 | ||
6480 | if (gfc_notification_std (GFC_STD_F2003) == ERROR) | |
60e19868 | 6481 | return false; |
1e057e9b | 6482 | |
6483 | /* First usage case: PROCEDURE and EXTERNAL statements. */ | |
6484 | case1 = gfc_current_state () == COMP_FUNCTION && gfc_current_block () | |
6485 | && strcmp (gfc_current_block ()->name, sym->name) == 0 | |
6486 | && sym->attr.external; | |
6487 | /* Second usage case: INTERFACE statements. */ | |
6488 | case2 = gfc_current_state () == COMP_INTERFACE && gfc_state_stack->previous | |
6489 | && gfc_state_stack->previous->state == COMP_FUNCTION | |
6490 | && strcmp (gfc_state_stack->previous->sym->name, sym->name) == 0; | |
6491 | ||
6492 | if (case1 || case2) | |
6493 | { | |
6494 | gfc_symtree *stree; | |
6495 | if (case1) | |
36b0a1b0 | 6496 | gfc_get_sym_tree ("ppr@", gfc_current_ns, &stree, false); |
f8e5c21b | 6497 | else |
180a5dc0 | 6498 | { |
6499 | gfc_symtree *st2; | |
36b0a1b0 | 6500 | gfc_get_sym_tree ("ppr@", gfc_current_ns->parent, &stree, false); |
180a5dc0 | 6501 | st2 = gfc_new_symtree (&gfc_current_ns->sym_root, "ppr@"); |
6502 | st2->n.sym = stree->n.sym; | |
35ae89b7 | 6503 | stree->n.sym->refs++; |
180a5dc0 | 6504 | } |
1e057e9b | 6505 | sym->result = stree->n.sym; |
6506 | ||
6507 | sym->result->attr.proc_pointer = sym->attr.proc_pointer; | |
6508 | sym->result->attr.pointer = sym->attr.pointer; | |
6509 | sym->result->attr.external = sym->attr.external; | |
6510 | sym->result->attr.referenced = sym->attr.referenced; | |
e40ac2fe | 6511 | sym->result->ts = sym->ts; |
1e057e9b | 6512 | sym->attr.proc_pointer = 0; |
6513 | sym->attr.pointer = 0; | |
6514 | sym->attr.external = 0; | |
6515 | if (sym->result->attr.external && sym->result->attr.pointer) | |
6516 | { | |
6517 | sym->result->attr.pointer = 0; | |
6518 | sym->result->attr.proc_pointer = 1; | |
6519 | } | |
6520 | ||
6521 | return gfc_add_result (&sym->result->attr, sym->result->name, NULL); | |
6522 | } | |
6523 | /* POINTER after PROCEDURE/EXTERNAL/INTERFACE statement. */ | |
6524 | else if (sym->attr.function && !sym->attr.external && sym->attr.pointer | |
6525 | && sym->result && sym->result != sym && sym->result->attr.external | |
6526 | && sym == gfc_current_ns->proc_name | |
6527 | && sym == sym->result->ns->proc_name | |
6528 | && strcmp ("ppr@", sym->result->name) == 0) | |
6529 | { | |
6530 | sym->result->attr.proc_pointer = 1; | |
6531 | sym->attr.pointer = 0; | |
60e19868 | 6532 | return true; |
1e057e9b | 6533 | } |
6534 | else | |
60e19868 | 6535 | return false; |
1e057e9b | 6536 | } |
6537 | ||
6538 | ||
64e93293 | 6539 | /* Match the interface for a PROCEDURE declaration, |
6540 | including brackets (R1212). */ | |
af1a34ee | 6541 | |
6542 | static match | |
64e93293 | 6543 | match_procedure_interface (gfc_symbol **proc_if) |
af1a34ee | 6544 | { |
6545 | match m; | |
1eb2b542 | 6546 | gfc_symtree *st; |
af1a34ee | 6547 | locus old_loc, entry_loc; |
1eb2b542 | 6548 | gfc_namespace *old_ns = gfc_current_ns; |
6549 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
af1a34ee | 6550 | |
1eb2b542 | 6551 | old_loc = entry_loc = gfc_current_locus; |
af1a34ee | 6552 | gfc_clear_ts (¤t_ts); |
6553 | ||
6554 | if (gfc_match (" (") != MATCH_YES) | |
6555 | { | |
6556 | gfc_current_locus = entry_loc; | |
6557 | return MATCH_NO; | |
6558 | } | |
6559 | ||
6560 | /* Get the type spec. for the procedure interface. */ | |
6561 | old_loc = gfc_current_locus; | |
e8152f13 | 6562 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
fd1277c3 | 6563 | gfc_gobble_whitespace (); |
e0be6f02 | 6564 | if (m == MATCH_YES || (m == MATCH_NO && gfc_peek_ascii_char () == ')')) |
af1a34ee | 6565 | goto got_ts; |
6566 | ||
6567 | if (m == MATCH_ERROR) | |
6568 | return m; | |
6569 | ||
1eb2b542 | 6570 | /* Procedure interface is itself a procedure. */ |
af1a34ee | 6571 | gfc_current_locus = old_loc; |
1eb2b542 | 6572 | m = gfc_match_name (name); |
af1a34ee | 6573 | |
1eb2b542 | 6574 | /* First look to see if it is already accessible in the current |
6575 | namespace because it is use associated or contained. */ | |
6576 | st = NULL; | |
6577 | if (gfc_find_sym_tree (name, NULL, 0, &st)) | |
6578 | return MATCH_ERROR; | |
6579 | ||
6580 | /* If it is still not found, then try the parent namespace, if it | |
6581 | exists and create the symbol there if it is still not found. */ | |
6582 | if (gfc_current_ns->parent) | |
6583 | gfc_current_ns = gfc_current_ns->parent; | |
6584 | if (st == NULL && gfc_get_ha_sym_tree (name, &st)) | |
6585 | return MATCH_ERROR; | |
6586 | ||
6587 | gfc_current_ns = old_ns; | |
6588 | *proc_if = st->n.sym; | |
af1a34ee | 6589 | |
64e93293 | 6590 | if (*proc_if) |
af1a34ee | 6591 | { |
64e93293 | 6592 | (*proc_if)->refs++; |
74113644 | 6593 | /* Resolve interface if possible. That way, attr.procedure is only set |
6594 | if it is declared by a later procedure-declaration-stmt, which is | |
87863b31 | 6595 | invalid per F08:C1216 (cf. resolve_procedure_interface). */ |
7e9136f1 | 6596 | while ((*proc_if)->ts.interface |
6597 | && *proc_if != (*proc_if)->ts.interface) | |
64e93293 | 6598 | *proc_if = (*proc_if)->ts.interface; |
74113644 | 6599 | |
87863b31 | 6600 | if ((*proc_if)->attr.flavor == FL_UNKNOWN |
6601 | && (*proc_if)->ts.type == BT_UNKNOWN | |
76e207a9 | 6602 | && !gfc_add_flavor (&(*proc_if)->attr, FL_PROCEDURE, |
60e19868 | 6603 | (*proc_if)->name, NULL)) |
87863b31 | 6604 | return MATCH_ERROR; |
af1a34ee | 6605 | } |
6606 | ||
6607 | got_ts: | |
af1a34ee | 6608 | if (gfc_match (" )") != MATCH_YES) |
6609 | { | |
6610 | gfc_current_locus = entry_loc; | |
6611 | return MATCH_NO; | |
6612 | } | |
6613 | ||
64e93293 | 6614 | return MATCH_YES; |
6615 | } | |
6616 | ||
6617 | ||
6618 | /* Match a PROCEDURE declaration (R1211). */ | |
6619 | ||
6620 | static match | |
6621 | match_procedure_decl (void) | |
6622 | { | |
6623 | match m; | |
6624 | gfc_symbol *sym, *proc_if = NULL; | |
6625 | int num; | |
6626 | gfc_expr *initializer = NULL; | |
6627 | ||
293d72e0 | 6628 | /* Parse interface (with brackets). */ |
64e93293 | 6629 | m = match_procedure_interface (&proc_if); |
6630 | if (m != MATCH_YES) | |
6631 | return m; | |
6632 | ||
6633 | /* Parse attributes (with colons). */ | |
af1a34ee | 6634 | m = match_attr_spec(); |
6635 | if (m == MATCH_ERROR) | |
6636 | return MATCH_ERROR; | |
6637 | ||
caa3ea40 | 6638 | if (proc_if && proc_if->attr.is_bind_c && !current_attr.is_bind_c) |
6639 | { | |
6640 | current_attr.is_bind_c = 1; | |
6641 | has_name_equals = 0; | |
6642 | curr_binding_label = NULL; | |
6643 | } | |
6644 | ||
af1a34ee | 6645 | /* Get procedure symbols. */ |
6646 | for(num=1;;num++) | |
6647 | { | |
af1a34ee | 6648 | m = gfc_match_symbol (&sym, 0); |
6649 | if (m == MATCH_NO) | |
6650 | goto syntax; | |
6651 | else if (m == MATCH_ERROR) | |
6652 | return m; | |
6653 | ||
6654 | /* Add current_attr to the symbol attributes. */ | |
60e19868 | 6655 | if (!gfc_copy_attr (&sym->attr, ¤t_attr, NULL)) |
af1a34ee | 6656 | return MATCH_ERROR; |
6657 | ||
6658 | if (sym->attr.is_bind_c) | |
6659 | { | |
6660 | /* Check for C1218. */ | |
6661 | if (!proc_if || !proc_if->attr.is_bind_c) | |
6662 | { | |
6663 | gfc_error ("BIND(C) attribute at %C requires " | |
6664 | "an interface with BIND(C)"); | |
6665 | return MATCH_ERROR; | |
6666 | } | |
6667 | /* Check for C1217. */ | |
6668 | if (has_name_equals && sym->attr.pointer) | |
6669 | { | |
6670 | gfc_error ("BIND(C) procedure with NAME may not have " | |
6671 | "POINTER attribute at %C"); | |
6672 | return MATCH_ERROR; | |
6673 | } | |
6674 | if (has_name_equals && sym->attr.dummy) | |
6675 | { | |
6676 | gfc_error ("Dummy procedure at %C may not have " | |
6677 | "BIND(C) attribute with NAME"); | |
6678 | return MATCH_ERROR; | |
6679 | } | |
6680 | /* Set binding label for BIND(C). */ | |
60e19868 | 6681 | if (!set_binding_label (&sym->binding_label, sym->name, num)) |
af1a34ee | 6682 | return MATCH_ERROR; |
6683 | } | |
6684 | ||
60e19868 | 6685 | if (!gfc_add_external (&sym->attr, NULL)) |
af1a34ee | 6686 | return MATCH_ERROR; |
1e057e9b | 6687 | |
60e19868 | 6688 | if (add_hidden_procptr_result (sym)) |
1e057e9b | 6689 | sym = sym->result; |
6690 | ||
60e19868 | 6691 | if (!gfc_add_proc (&sym->attr, sym->name, NULL)) |
af1a34ee | 6692 | return MATCH_ERROR; |
6693 | ||
6694 | /* Set interface. */ | |
6695 | if (proc_if != NULL) | |
f7d7a083 | 6696 | { |
13a834aa | 6697 | if (sym->ts.type != BT_UNKNOWN) |
6698 | { | |
716da296 | 6699 | gfc_error ("Procedure %qs at %L already has basic type of %s", |
13a834aa | 6700 | sym->name, &gfc_current_locus, |
6701 | gfc_basic_typename (sym->ts.type)); | |
6702 | return MATCH_ERROR; | |
6703 | } | |
2cd2bb5c | 6704 | sym->ts.interface = proc_if; |
f7d7a083 | 6705 | sym->attr.untyped = 1; |
180a5dc0 | 6706 | sym->attr.if_source = IFSRC_IFBODY; |
f7d7a083 | 6707 | } |
af1a34ee | 6708 | else if (current_ts.type != BT_UNKNOWN) |
6709 | { | |
60e19868 | 6710 | if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
13a834aa | 6711 | return MATCH_ERROR; |
2cd2bb5c | 6712 | sym->ts.interface = gfc_new_symbol ("", gfc_current_ns); |
6713 | sym->ts.interface->ts = current_ts; | |
ce80bc5b | 6714 | sym->ts.interface->attr.flavor = FL_PROCEDURE; |
2cd2bb5c | 6715 | sym->ts.interface->attr.function = 1; |
ce80bc5b | 6716 | sym->attr.function = 1; |
180a5dc0 | 6717 | sym->attr.if_source = IFSRC_UNKNOWN; |
af1a34ee | 6718 | } |
6719 | ||
cad0ddcf | 6720 | if (gfc_match (" =>") == MATCH_YES) |
6721 | { | |
6722 | if (!current_attr.pointer) | |
6723 | { | |
6724 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
6725 | m = MATCH_ERROR; | |
6726 | goto cleanup; | |
6727 | } | |
6728 | ||
23d075f4 | 6729 | m = match_pointer_init (&initializer, 1); |
cad0ddcf | 6730 | if (m != MATCH_YES) |
6731 | goto cleanup; | |
6732 | ||
60e19868 | 6733 | if (!add_init_expr_to_sym (sym->name, &initializer, &gfc_current_locus)) |
cad0ddcf | 6734 | goto cleanup; |
6735 | ||
6736 | } | |
6737 | ||
af1a34ee | 6738 | if (gfc_match_eos () == MATCH_YES) |
6739 | return MATCH_YES; | |
6740 | if (gfc_match_char (',') != MATCH_YES) | |
6741 | goto syntax; | |
6742 | } | |
6743 | ||
6744 | syntax: | |
6745 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
6746 | return MATCH_ERROR; | |
cad0ddcf | 6747 | |
6748 | cleanup: | |
6749 | /* Free stuff up and return. */ | |
6750 | gfc_free_expr (initializer); | |
6751 | return m; | |
af1a34ee | 6752 | } |
6753 | ||
6754 | ||
64e93293 | 6755 | static match |
6756 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc); | |
6757 | ||
6758 | ||
6759 | /* Match a procedure pointer component declaration (R445). */ | |
6760 | ||
6761 | static match | |
6762 | match_ppc_decl (void) | |
6763 | { | |
6764 | match m; | |
6765 | gfc_symbol *proc_if = NULL; | |
6766 | gfc_typespec ts; | |
6767 | int num; | |
6768 | gfc_component *c; | |
6769 | gfc_expr *initializer = NULL; | |
6770 | gfc_typebound_proc* tb; | |
6771 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6772 | ||
6773 | /* Parse interface (with brackets). */ | |
6774 | m = match_procedure_interface (&proc_if); | |
6775 | if (m != MATCH_YES) | |
6776 | goto syntax; | |
6777 | ||
6778 | /* Parse attributes. */ | |
6779 | tb = XCNEW (gfc_typebound_proc); | |
6780 | tb->where = gfc_current_locus; | |
6781 | m = match_binding_attributes (tb, false, true); | |
6782 | if (m == MATCH_ERROR) | |
6783 | return m; | |
6784 | ||
64e93293 | 6785 | gfc_clear_attr (¤t_attr); |
6786 | current_attr.procedure = 1; | |
6787 | current_attr.proc_pointer = 1; | |
6788 | current_attr.access = tb->access; | |
6789 | current_attr.flavor = FL_PROCEDURE; | |
6790 | ||
6791 | /* Match the colons (required). */ | |
6792 | if (gfc_match (" ::") != MATCH_YES) | |
6793 | { | |
0d2b3c9c | 6794 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
64e93293 | 6795 | return MATCH_ERROR; |
6796 | } | |
6797 | ||
6798 | /* Check for C450. */ | |
6799 | if (!tb->nopass && proc_if == NULL) | |
6800 | { | |
6801 | gfc_error("NOPASS or explicit interface required at %C"); | |
6802 | return MATCH_ERROR; | |
6803 | } | |
6804 | ||
60e19868 | 6805 | if (!gfc_notify_std (GFC_STD_F2003, "Procedure pointer component at %C")) |
8a026279 | 6806 | return MATCH_ERROR; |
6807 | ||
64e93293 | 6808 | /* Match PPC names. */ |
6809 | ts = current_ts; | |
6810 | for(num=1;;num++) | |
6811 | { | |
6812 | m = gfc_match_name (name); | |
6813 | if (m == MATCH_NO) | |
6814 | goto syntax; | |
6815 | else if (m == MATCH_ERROR) | |
6816 | return m; | |
6817 | ||
60e19868 | 6818 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
64e93293 | 6819 | return MATCH_ERROR; |
6820 | ||
6821 | /* Add current_attr to the symbol attributes. */ | |
60e19868 | 6822 | if (!gfc_copy_attr (&c->attr, ¤t_attr, NULL)) |
64e93293 | 6823 | return MATCH_ERROR; |
6824 | ||
60e19868 | 6825 | if (!gfc_add_external (&c->attr, NULL)) |
64e93293 | 6826 | return MATCH_ERROR; |
6827 | ||
60e19868 | 6828 | if (!gfc_add_proc (&c->attr, name, NULL)) |
64e93293 | 6829 | return MATCH_ERROR; |
6830 | ||
99014f81 | 6831 | if (num == 1) |
6832 | c->tb = tb; | |
6833 | else | |
6834 | { | |
6835 | c->tb = XCNEW (gfc_typebound_proc); | |
6836 | c->tb->where = gfc_current_locus; | |
6837 | *c->tb = *tb; | |
6838 | } | |
fe9b08a2 | 6839 | |
64e93293 | 6840 | /* Set interface. */ |
6841 | if (proc_if != NULL) | |
6842 | { | |
6843 | c->ts.interface = proc_if; | |
6844 | c->attr.untyped = 1; | |
6845 | c->attr.if_source = IFSRC_IFBODY; | |
6846 | } | |
6847 | else if (ts.type != BT_UNKNOWN) | |
6848 | { | |
6849 | c->ts = ts; | |
6850 | c->ts.interface = gfc_new_symbol ("", gfc_current_ns); | |
a63bcd97 | 6851 | c->ts.interface->result = c->ts.interface; |
64e93293 | 6852 | c->ts.interface->ts = ts; |
ce80bc5b | 6853 | c->ts.interface->attr.flavor = FL_PROCEDURE; |
64e93293 | 6854 | c->ts.interface->attr.function = 1; |
ce80bc5b | 6855 | c->attr.function = 1; |
64e93293 | 6856 | c->attr.if_source = IFSRC_UNKNOWN; |
6857 | } | |
6858 | ||
6859 | if (gfc_match (" =>") == MATCH_YES) | |
6860 | { | |
23d075f4 | 6861 | m = match_pointer_init (&initializer, 1); |
64e93293 | 6862 | if (m != MATCH_YES) |
6863 | { | |
6864 | gfc_free_expr (initializer); | |
6865 | return m; | |
6866 | } | |
6867 | c->initializer = initializer; | |
6868 | } | |
6869 | ||
6870 | if (gfc_match_eos () == MATCH_YES) | |
6871 | return MATCH_YES; | |
6872 | if (gfc_match_char (',') != MATCH_YES) | |
6873 | goto syntax; | |
6874 | } | |
6875 | ||
6876 | syntax: | |
6877 | gfc_error ("Syntax error in procedure pointer component at %C"); | |
6878 | return MATCH_ERROR; | |
6879 | } | |
6880 | ||
6881 | ||
af1a34ee | 6882 | /* Match a PROCEDURE declaration inside an interface (R1206). */ |
6883 | ||
6884 | static match | |
6885 | match_procedure_in_interface (void) | |
6886 | { | |
6887 | match m; | |
6888 | gfc_symbol *sym; | |
6889 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
2b0f5dc8 | 6890 | locus old_locus; |
af1a34ee | 6891 | |
6892 | if (current_interface.type == INTERFACE_NAMELESS | |
6893 | || current_interface.type == INTERFACE_ABSTRACT) | |
6894 | { | |
6895 | gfc_error ("PROCEDURE at %C must be in a generic interface"); | |
6896 | return MATCH_ERROR; | |
6897 | } | |
6898 | ||
2b0f5dc8 | 6899 | /* Check if the F2008 optional double colon appears. */ |
6900 | gfc_gobble_whitespace (); | |
6901 | old_locus = gfc_current_locus; | |
6902 | if (gfc_match ("::") == MATCH_YES) | |
6903 | { | |
60e19868 | 6904 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
6905 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
2b0f5dc8 | 6906 | return MATCH_ERROR; |
6907 | } | |
6908 | else | |
6909 | gfc_current_locus = old_locus; | |
6910 | ||
af1a34ee | 6911 | for(;;) |
6912 | { | |
6913 | m = gfc_match_name (name); | |
6914 | if (m == MATCH_NO) | |
6915 | goto syntax; | |
6916 | else if (m == MATCH_ERROR) | |
6917 | return m; | |
6918 | if (gfc_get_symbol (name, gfc_current_ns->parent, &sym)) | |
6919 | return MATCH_ERROR; | |
6920 | ||
60e19868 | 6921 | if (!gfc_add_interface (sym)) |
af1a34ee | 6922 | return MATCH_ERROR; |
6923 | ||
af1a34ee | 6924 | if (gfc_match_eos () == MATCH_YES) |
6925 | break; | |
6926 | if (gfc_match_char (',') != MATCH_YES) | |
6927 | goto syntax; | |
6928 | } | |
6929 | ||
6930 | return MATCH_YES; | |
6931 | ||
6932 | syntax: | |
6933 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
6934 | return MATCH_ERROR; | |
6935 | } | |
6936 | ||
6937 | ||
6938 | /* General matcher for PROCEDURE declarations. */ | |
6939 | ||
7fd88f6e | 6940 | static match match_procedure_in_type (void); |
6941 | ||
af1a34ee | 6942 | match |
6943 | gfc_match_procedure (void) | |
6944 | { | |
6945 | match m; | |
6946 | ||
6947 | switch (gfc_current_state ()) | |
6948 | { | |
6949 | case COMP_NONE: | |
6950 | case COMP_PROGRAM: | |
6951 | case COMP_MODULE: | |
4b8eb6ca | 6952 | case COMP_SUBMODULE: |
af1a34ee | 6953 | case COMP_SUBROUTINE: |
6954 | case COMP_FUNCTION: | |
0b342e60 | 6955 | case COMP_BLOCK: |
af1a34ee | 6956 | m = match_procedure_decl (); |
6957 | break; | |
6958 | case COMP_INTERFACE: | |
6959 | m = match_procedure_in_interface (); | |
6960 | break; | |
6961 | case COMP_DERIVED: | |
64e93293 | 6962 | m = match_ppc_decl (); |
6963 | break; | |
7fd88f6e | 6964 | case COMP_DERIVED_CONTAINS: |
6965 | m = match_procedure_in_type (); | |
6966 | break; | |
af1a34ee | 6967 | default: |
6968 | return MATCH_NO; | |
6969 | } | |
6970 | ||
6971 | if (m != MATCH_YES) | |
6972 | return m; | |
6973 | ||
60e19868 | 6974 | if (!gfc_notify_std (GFC_STD_F2003, "PROCEDURE statement at %C")) |
af1a34ee | 6975 | return MATCH_ERROR; |
6976 | ||
6977 | return m; | |
6978 | } | |
6979 | ||
6980 | ||
a34926ba | 6981 | /* Warn if a matched procedure has the same name as an intrinsic; this is |
6982 | simply a wrapper around gfc_warn_intrinsic_shadow that interprets the current | |
6983 | parser-state-stack to find out whether we're in a module. */ | |
6984 | ||
6985 | static void | |
8290d53f | 6986 | do_warn_intrinsic_shadow (const gfc_symbol* sym, bool func) |
a34926ba | 6987 | { |
6988 | bool in_module; | |
6989 | ||
6990 | in_module = (gfc_state_stack->previous | |
4b8eb6ca | 6991 | && (gfc_state_stack->previous->state == COMP_MODULE |
6992 | || gfc_state_stack->previous->state == COMP_SUBMODULE)); | |
a34926ba | 6993 | |
6994 | gfc_warn_intrinsic_shadow (sym, in_module, func); | |
6995 | } | |
6996 | ||
6997 | ||
4ee9c684 | 6998 | /* Match a function declaration. */ |
6999 | ||
7000 | match | |
7001 | gfc_match_function_decl (void) | |
7002 | { | |
7003 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7004 | gfc_symbol *sym, *result; | |
7005 | locus old_loc; | |
7006 | match m; | |
c5d33754 | 7007 | match suffix_match; |
8db94b3b | 7008 | match found_match; /* Status returned by match func. */ |
4ee9c684 | 7009 | |
7010 | if (gfc_current_state () != COMP_NONE | |
7011 | && gfc_current_state () != COMP_INTERFACE | |
7012 | && gfc_current_state () != COMP_CONTAINS) | |
7013 | return MATCH_NO; | |
7014 | ||
7015 | gfc_clear_ts (¤t_ts); | |
7016 | ||
cbb9e6aa | 7017 | old_loc = gfc_current_locus; |
4ee9c684 | 7018 | |
077932f9 | 7019 | m = gfc_match_prefix (¤t_ts); |
4ee9c684 | 7020 | if (m != MATCH_YES) |
7021 | { | |
cbb9e6aa | 7022 | gfc_current_locus = old_loc; |
4ee9c684 | 7023 | return m; |
7024 | } | |
7025 | ||
7026 | if (gfc_match ("function% %n", name) != MATCH_YES) | |
7027 | { | |
cbb9e6aa | 7028 | gfc_current_locus = old_loc; |
4ee9c684 | 7029 | return MATCH_NO; |
7030 | } | |
4b8eb6ca | 7031 | |
d77f260f | 7032 | if (get_proc_name (name, &sym, false)) |
4ee9c684 | 7033 | return MATCH_ERROR; |
1e057e9b | 7034 | |
60e19868 | 7035 | if (add_hidden_procptr_result (sym)) |
1e057e9b | 7036 | sym = sym->result; |
7037 | ||
4b8eb6ca | 7038 | if (current_attr.module_procedure) |
7039 | sym->attr.module_procedure = 1; | |
7040 | ||
4ee9c684 | 7041 | gfc_new_block = sym; |
7042 | ||
7043 | m = gfc_match_formal_arglist (sym, 0, 0); | |
7044 | if (m == MATCH_NO) | |
9b435b6d | 7045 | { |
7046 | gfc_error ("Expected formal argument list in function " | |
1a9745d2 | 7047 | "definition at %C"); |
9b435b6d | 7048 | m = MATCH_ERROR; |
7049 | goto cleanup; | |
7050 | } | |
4ee9c684 | 7051 | else if (m == MATCH_ERROR) |
7052 | goto cleanup; | |
7053 | ||
7054 | result = NULL; | |
7055 | ||
c5d33754 | 7056 | /* According to the draft, the bind(c) and result clause can |
7057 | come in either order after the formal_arg_list (i.e., either | |
7058 | can be first, both can exist together or by themselves or neither | |
7059 | one). Therefore, the match_result can't match the end of the | |
7060 | string, and check for the bind(c) or result clause in either order. */ | |
7061 | found_match = gfc_match_eos (); | |
7062 | ||
7063 | /* Make sure that it isn't already declared as BIND(C). If it is, it | |
7064 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7065 | not allowed for procedures. */ | |
7066 | if (sym->attr.is_bind_c == 1) | |
7067 | { | |
7068 | sym->attr.is_bind_c = 0; | |
7069 | if (sym->old_symbol != NULL) | |
7070 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7071 | "variables or common blocks", | |
7072 | &(sym->old_symbol->declared_at)); | |
7073 | else | |
7074 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7075 | "variables or common blocks", &gfc_current_locus); | |
4ee9c684 | 7076 | } |
7077 | ||
c5d33754 | 7078 | if (found_match != MATCH_YES) |
4ee9c684 | 7079 | { |
c5d33754 | 7080 | /* If we haven't found the end-of-statement, look for a suffix. */ |
7081 | suffix_match = gfc_match_suffix (sym, &result); | |
7082 | if (suffix_match == MATCH_YES) | |
7083 | /* Need to get the eos now. */ | |
7084 | found_match = gfc_match_eos (); | |
7085 | else | |
7086 | found_match = suffix_match; | |
4ee9c684 | 7087 | } |
7088 | ||
c5d33754 | 7089 | if(found_match != MATCH_YES) |
7090 | m = MATCH_ERROR; | |
4ee9c684 | 7091 | else |
7092 | { | |
c5d33754 | 7093 | /* Make changes to the symbol. */ |
7094 | m = MATCH_ERROR; | |
8db94b3b | 7095 | |
60e19868 | 7096 | if (!gfc_add_function (&sym->attr, sym->name, NULL)) |
c5d33754 | 7097 | goto cleanup; |
8db94b3b | 7098 | |
76e207a9 | 7099 | if (!gfc_missing_attr (&sym->attr, NULL)) |
c5d33754 | 7100 | goto cleanup; |
4ee9c684 | 7101 | |
76e207a9 | 7102 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
7103 | { | |
7104 | if(!sym->attr.module_procedure) | |
7105 | goto cleanup; | |
7106 | else | |
7107 | gfc_error_check (); | |
7108 | } | |
7109 | ||
8d39570e | 7110 | /* Delay matching the function characteristics until after the |
077932f9 | 7111 | specification block by signalling kind=-1. */ |
8d39570e | 7112 | sym->declared_at = old_loc; |
7113 | if (current_ts.type != BT_UNKNOWN) | |
7114 | current_ts.kind = -1; | |
7115 | else | |
7116 | current_ts.kind = 0; | |
077932f9 | 7117 | |
c5d33754 | 7118 | if (result == NULL) |
7119 | { | |
0477d42d | 7120 | if (current_ts.type != BT_UNKNOWN |
60e19868 | 7121 | && !gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
0477d42d | 7122 | goto cleanup; |
c5d33754 | 7123 | sym->result = sym; |
7124 | } | |
7125 | else | |
7126 | { | |
0477d42d | 7127 | if (current_ts.type != BT_UNKNOWN |
60e19868 | 7128 | && !gfc_add_type (result, ¤t_ts, &gfc_current_locus)) |
0477d42d | 7129 | goto cleanup; |
c5d33754 | 7130 | sym->result = result; |
7131 | } | |
7132 | ||
a34926ba | 7133 | /* Warn if this procedure has the same name as an intrinsic. */ |
8290d53f | 7134 | do_warn_intrinsic_shadow (sym, true); |
a34926ba | 7135 | |
c5d33754 | 7136 | return MATCH_YES; |
7137 | } | |
4ee9c684 | 7138 | |
7139 | cleanup: | |
cbb9e6aa | 7140 | gfc_current_locus = old_loc; |
4ee9c684 | 7141 | return m; |
7142 | } | |
7143 | ||
1a9745d2 | 7144 | |
7145 | /* This is mostly a copy of parse.c(add_global_procedure) but modified to | |
7146 | pass the name of the entry, rather than the gfc_current_block name, and | |
7147 | to return false upon finding an existing global entry. */ | |
858f9894 | 7148 | |
7149 | static bool | |
8d779aef | 7150 | add_global_entry (const char *name, const char *binding_label, bool sub, |
7151 | locus *where) | |
858f9894 | 7152 | { |
7153 | gfc_gsymbol *s; | |
8458f4ca | 7154 | enum gfc_symbol_type type; |
858f9894 | 7155 | |
5b11d932 | 7156 | type = sub ? GSYM_SUBROUTINE : GSYM_FUNCTION; |
858f9894 | 7157 | |
da5c730d | 7158 | /* Only in Fortran 2003: For procedures with a binding label also the Fortran |
7159 | name is a global identifier. */ | |
7160 | if (!binding_label || gfc_notification_std (GFC_STD_F2008)) | |
858f9894 | 7161 | { |
da5c730d | 7162 | s = gfc_get_gsymbol (name); |
7163 | ||
7164 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
7165 | { | |
8d779aef | 7166 | gfc_global_used (s, where); |
da5c730d | 7167 | return false; |
7168 | } | |
7169 | else | |
7170 | { | |
7171 | s->type = type; | |
c8b913ab | 7172 | s->sym_name = name; |
8d779aef | 7173 | s->where = *where; |
da5c730d | 7174 | s->defined = 1; |
7175 | s->ns = gfc_current_ns; | |
7176 | } | |
858f9894 | 7177 | } |
da5c730d | 7178 | |
7179 | /* Don't add the symbol multiple times. */ | |
7180 | if (binding_label | |
7181 | && (!gfc_notification_std (GFC_STD_F2008) | |
7182 | || strcmp (name, binding_label) != 0)) | |
7183 | { | |
7184 | s = gfc_get_gsymbol (binding_label); | |
7185 | ||
7186 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
7187 | { | |
8d779aef | 7188 | gfc_global_used (s, where); |
da5c730d | 7189 | return false; |
7190 | } | |
7191 | else | |
7192 | { | |
7193 | s->type = type; | |
c8b913ab | 7194 | s->sym_name = name; |
da5c730d | 7195 | s->binding_label = binding_label; |
8d779aef | 7196 | s->where = *where; |
da5c730d | 7197 | s->defined = 1; |
7198 | s->ns = gfc_current_ns; | |
7199 | } | |
7200 | } | |
7201 | ||
7202 | return true; | |
858f9894 | 7203 | } |
4ee9c684 | 7204 | |
1a9745d2 | 7205 | |
4ee9c684 | 7206 | /* Match an ENTRY statement. */ |
7207 | ||
7208 | match | |
7209 | gfc_match_entry (void) | |
7210 | { | |
1b716045 | 7211 | gfc_symbol *proc; |
7212 | gfc_symbol *result; | |
7213 | gfc_symbol *entry; | |
4ee9c684 | 7214 | char name[GFC_MAX_SYMBOL_LEN + 1]; |
7215 | gfc_compile_state state; | |
7216 | match m; | |
1b716045 | 7217 | gfc_entry_list *el; |
7b5e1acc | 7218 | locus old_loc; |
d77f260f | 7219 | bool module_procedure; |
86f0974b | 7220 | char peek_char; |
7221 | match is_bind_c; | |
4ee9c684 | 7222 | |
7223 | m = gfc_match_name (name); | |
7224 | if (m != MATCH_YES) | |
7225 | return m; | |
7226 | ||
60e19868 | 7227 | if (!gfc_notify_std (GFC_STD_F2008_OBS, "ENTRY statement at %C")) |
a3b81b0f | 7228 | return MATCH_ERROR; |
7229 | ||
1b716045 | 7230 | state = gfc_current_state (); |
ea37f786 | 7231 | if (state != COMP_SUBROUTINE && state != COMP_FUNCTION) |
1b716045 | 7232 | { |
ea37f786 | 7233 | switch (state) |
7234 | { | |
7235 | case COMP_PROGRAM: | |
7236 | gfc_error ("ENTRY statement at %C cannot appear within a PROGRAM"); | |
7237 | break; | |
7238 | case COMP_MODULE: | |
7239 | gfc_error ("ENTRY statement at %C cannot appear within a MODULE"); | |
7240 | break; | |
4b8eb6ca | 7241 | case COMP_SUBMODULE: |
7242 | gfc_error ("ENTRY statement at %C cannot appear within a SUBMODULE"); | |
7243 | break; | |
ea37f786 | 7244 | case COMP_BLOCK_DATA: |
1a9745d2 | 7245 | gfc_error ("ENTRY statement at %C cannot appear within " |
7246 | "a BLOCK DATA"); | |
ea37f786 | 7247 | break; |
7248 | case COMP_INTERFACE: | |
1a9745d2 | 7249 | gfc_error ("ENTRY statement at %C cannot appear within " |
7250 | "an INTERFACE"); | |
ea37f786 | 7251 | break; |
d7cd448a | 7252 | case COMP_STRUCTURE: |
7253 | gfc_error ("ENTRY statement at %C cannot appear within " | |
7254 | "a STRUCTURE block"); | |
7255 | break; | |
ea37f786 | 7256 | case COMP_DERIVED: |
1a9745d2 | 7257 | gfc_error ("ENTRY statement at %C cannot appear within " |
7258 | "a DERIVED TYPE block"); | |
ea37f786 | 7259 | break; |
7260 | case COMP_IF: | |
1a9745d2 | 7261 | gfc_error ("ENTRY statement at %C cannot appear within " |
7262 | "an IF-THEN block"); | |
ea37f786 | 7263 | break; |
7264 | case COMP_DO: | |
55ea8666 | 7265 | case COMP_DO_CONCURRENT: |
1a9745d2 | 7266 | gfc_error ("ENTRY statement at %C cannot appear within " |
7267 | "a DO block"); | |
ea37f786 | 7268 | break; |
7269 | case COMP_SELECT: | |
1a9745d2 | 7270 | gfc_error ("ENTRY statement at %C cannot appear within " |
7271 | "a SELECT block"); | |
ea37f786 | 7272 | break; |
7273 | case COMP_FORALL: | |
1a9745d2 | 7274 | gfc_error ("ENTRY statement at %C cannot appear within " |
7275 | "a FORALL block"); | |
ea37f786 | 7276 | break; |
7277 | case COMP_WHERE: | |
1a9745d2 | 7278 | gfc_error ("ENTRY statement at %C cannot appear within " |
7279 | "a WHERE block"); | |
ea37f786 | 7280 | break; |
7281 | case COMP_CONTAINS: | |
1a9745d2 | 7282 | gfc_error ("ENTRY statement at %C cannot appear within " |
7283 | "a contained subprogram"); | |
ea37f786 | 7284 | break; |
7285 | default: | |
3132dbae | 7286 | gfc_error ("Unexpected ENTRY statement at %C"); |
ea37f786 | 7287 | } |
1b716045 | 7288 | return MATCH_ERROR; |
7289 | } | |
7290 | ||
c286c294 | 7291 | if ((state == COMP_SUBROUTINE || state == COMP_FUNCTION) |
7292 | && gfc_state_stack->previous->state == COMP_INTERFACE) | |
7293 | { | |
7294 | gfc_error ("ENTRY statement at %C cannot appear within an INTERFACE"); | |
7295 | return MATCH_ERROR; | |
7296 | } | |
7297 | ||
d77f260f | 7298 | module_procedure = gfc_current_ns->parent != NULL |
1a9745d2 | 7299 | && gfc_current_ns->parent->proc_name |
7300 | && gfc_current_ns->parent->proc_name->attr.flavor | |
7301 | == FL_MODULE; | |
d77f260f | 7302 | |
1b716045 | 7303 | if (gfc_current_ns->parent != NULL |
7304 | && gfc_current_ns->parent->proc_name | |
d77f260f | 7305 | && !module_procedure) |
1b716045 | 7306 | { |
7307 | gfc_error("ENTRY statement at %C cannot appear in a " | |
7308 | "contained procedure"); | |
7309 | return MATCH_ERROR; | |
7310 | } | |
7311 | ||
d77f260f | 7312 | /* Module function entries need special care in get_proc_name |
7313 | because previous references within the function will have | |
7314 | created symbols attached to the current namespace. */ | |
7315 | if (get_proc_name (name, &entry, | |
7316 | gfc_current_ns->parent != NULL | |
c1e4695a | 7317 | && module_procedure)) |
4ee9c684 | 7318 | return MATCH_ERROR; |
7319 | ||
1b716045 | 7320 | proc = gfc_current_block (); |
7321 | ||
86f0974b | 7322 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
7323 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7324 | not allowed for procedures. */ | |
7325 | if (entry->attr.is_bind_c == 1) | |
7326 | { | |
7327 | entry->attr.is_bind_c = 0; | |
7328 | if (entry->old_symbol != NULL) | |
7329 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7330 | "variables or common blocks", | |
7331 | &(entry->old_symbol->declared_at)); | |
7332 | else | |
7333 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7334 | "variables or common blocks", &gfc_current_locus); | |
7335 | } | |
8db94b3b | 7336 | |
86f0974b | 7337 | /* Check what next non-whitespace character is so we can tell if there |
7338 | is the required parens if we have a BIND(C). */ | |
8d779aef | 7339 | old_loc = gfc_current_locus; |
86f0974b | 7340 | gfc_gobble_whitespace (); |
e0be6f02 | 7341 | peek_char = gfc_peek_ascii_char (); |
86f0974b | 7342 | |
1b716045 | 7343 | if (state == COMP_SUBROUTINE) |
4ee9c684 | 7344 | { |
4ee9c684 | 7345 | m = gfc_match_formal_arglist (entry, 0, 1); |
7346 | if (m != MATCH_YES) | |
7347 | return MATCH_ERROR; | |
7348 | ||
75ae7f6c | 7349 | /* Call gfc_match_bind_c with allow_binding_name = true as ENTRY can |
7350 | never be an internal procedure. */ | |
7351 | is_bind_c = gfc_match_bind_c (entry, true); | |
86f0974b | 7352 | if (is_bind_c == MATCH_ERROR) |
7353 | return MATCH_ERROR; | |
7354 | if (is_bind_c == MATCH_YES) | |
7355 | { | |
7356 | if (peek_char != '(') | |
7357 | { | |
7358 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
7359 | return MATCH_ERROR; | |
7360 | } | |
76e207a9 | 7361 | if (!gfc_add_is_bind_c (&(entry->attr), entry->name, |
60e19868 | 7362 | &(entry->declared_at), 1)) |
86f0974b | 7363 | return MATCH_ERROR; |
7364 | } | |
7365 | ||
da5c730d | 7366 | if (!gfc_current_ns->parent |
8d779aef | 7367 | && !add_global_entry (name, entry->binding_label, true, |
7368 | &old_loc)) | |
da5c730d | 7369 | return MATCH_ERROR; |
7370 | ||
7371 | /* An entry in a subroutine. */ | |
60e19868 | 7372 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7373 | || !gfc_add_subroutine (&entry->attr, entry->name, NULL)) | |
4ee9c684 | 7374 | return MATCH_ERROR; |
1b716045 | 7375 | } |
7376 | else | |
7377 | { | |
7b5e1acc | 7378 | /* An entry in a function. |
1a9745d2 | 7379 | We need to take special care because writing |
7380 | ENTRY f() | |
7381 | as | |
7382 | ENTRY f | |
7383 | is allowed, whereas | |
7384 | ENTRY f() RESULT (r) | |
7385 | can't be written as | |
7386 | ENTRY f RESULT (r). */ | |
7b5e1acc | 7387 | if (gfc_match_eos () == MATCH_YES) |
7388 | { | |
7389 | gfc_current_locus = old_loc; | |
7390 | /* Match the empty argument list, and add the interface to | |
7391 | the symbol. */ | |
7392 | m = gfc_match_formal_arglist (entry, 0, 1); | |
7393 | } | |
7394 | else | |
7395 | m = gfc_match_formal_arglist (entry, 0, 0); | |
7396 | ||
4ee9c684 | 7397 | if (m != MATCH_YES) |
7398 | return MATCH_ERROR; | |
7399 | ||
4ee9c684 | 7400 | result = NULL; |
7401 | ||
7402 | if (gfc_match_eos () == MATCH_YES) | |
7403 | { | |
60e19868 | 7404 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7405 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
4ee9c684 | 7406 | return MATCH_ERROR; |
7407 | ||
c6871095 | 7408 | entry->result = entry; |
4ee9c684 | 7409 | } |
7410 | else | |
7411 | { | |
86f0974b | 7412 | m = gfc_match_suffix (entry, &result); |
4ee9c684 | 7413 | if (m == MATCH_NO) |
7414 | gfc_syntax_error (ST_ENTRY); | |
7415 | if (m != MATCH_YES) | |
7416 | return MATCH_ERROR; | |
7417 | ||
86f0974b | 7418 | if (result) |
7419 | { | |
60e19868 | 7420 | if (!gfc_add_result (&result->attr, result->name, NULL) |
7421 | || !gfc_add_entry (&entry->attr, result->name, NULL) | |
7422 | || !gfc_add_function (&entry->attr, result->name, NULL)) | |
86f0974b | 7423 | return MATCH_ERROR; |
7424 | entry->result = result; | |
7425 | } | |
7426 | else | |
7427 | { | |
60e19868 | 7428 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7429 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
86f0974b | 7430 | return MATCH_ERROR; |
7431 | entry->result = entry; | |
7432 | } | |
4ee9c684 | 7433 | } |
da5c730d | 7434 | |
7435 | if (!gfc_current_ns->parent | |
8d779aef | 7436 | && !add_global_entry (name, entry->binding_label, false, |
7437 | &old_loc)) | |
da5c730d | 7438 | return MATCH_ERROR; |
4ee9c684 | 7439 | } |
7440 | ||
7441 | if (gfc_match_eos () != MATCH_YES) | |
7442 | { | |
7443 | gfc_syntax_error (ST_ENTRY); | |
7444 | return MATCH_ERROR; | |
7445 | } | |
7446 | ||
1b716045 | 7447 | entry->attr.recursive = proc->attr.recursive; |
7448 | entry->attr.elemental = proc->attr.elemental; | |
7449 | entry->attr.pure = proc->attr.pure; | |
4ee9c684 | 7450 | |
1b716045 | 7451 | el = gfc_get_entry_list (); |
7452 | el->sym = entry; | |
7453 | el->next = gfc_current_ns->entries; | |
7454 | gfc_current_ns->entries = el; | |
7455 | if (el->next) | |
7456 | el->id = el->next->id + 1; | |
7457 | else | |
7458 | el->id = 1; | |
4ee9c684 | 7459 | |
1b716045 | 7460 | new_st.op = EXEC_ENTRY; |
7461 | new_st.ext.entry = el; | |
7462 | ||
7463 | return MATCH_YES; | |
4ee9c684 | 7464 | } |
7465 | ||
7466 | ||
7467 | /* Match a subroutine statement, including optional prefixes. */ | |
7468 | ||
7469 | match | |
7470 | gfc_match_subroutine (void) | |
7471 | { | |
7472 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7473 | gfc_symbol *sym; | |
7474 | match m; | |
c5d33754 | 7475 | match is_bind_c; |
7476 | char peek_char; | |
75ae7f6c | 7477 | bool allow_binding_name; |
4ee9c684 | 7478 | |
7479 | if (gfc_current_state () != COMP_NONE | |
7480 | && gfc_current_state () != COMP_INTERFACE | |
7481 | && gfc_current_state () != COMP_CONTAINS) | |
7482 | return MATCH_NO; | |
7483 | ||
077932f9 | 7484 | m = gfc_match_prefix (NULL); |
4ee9c684 | 7485 | if (m != MATCH_YES) |
7486 | return m; | |
7487 | ||
7488 | m = gfc_match ("subroutine% %n", name); | |
7489 | if (m != MATCH_YES) | |
7490 | return m; | |
7491 | ||
d77f260f | 7492 | if (get_proc_name (name, &sym, false)) |
4ee9c684 | 7493 | return MATCH_ERROR; |
1e057e9b | 7494 | |
22c1d301 | 7495 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if |
293d72e0 | 7496 | the symbol existed before. */ |
22c1d301 | 7497 | sym->declared_at = gfc_current_locus; |
7498 | ||
4b8eb6ca | 7499 | if (current_attr.module_procedure) |
7500 | sym->attr.module_procedure = 1; | |
7501 | ||
60e19868 | 7502 | if (add_hidden_procptr_result (sym)) |
1e057e9b | 7503 | sym = sym->result; |
7504 | ||
4ee9c684 | 7505 | gfc_new_block = sym; |
7506 | ||
c5d33754 | 7507 | /* Check what next non-whitespace character is so we can tell if there |
86f0974b | 7508 | is the required parens if we have a BIND(C). */ |
c5d33754 | 7509 | gfc_gobble_whitespace (); |
e0be6f02 | 7510 | peek_char = gfc_peek_ascii_char (); |
8db94b3b | 7511 | |
60e19868 | 7512 | if (!gfc_add_subroutine (&sym->attr, sym->name, NULL)) |
4ee9c684 | 7513 | return MATCH_ERROR; |
7514 | ||
7515 | if (gfc_match_formal_arglist (sym, 0, 1) != MATCH_YES) | |
7516 | return MATCH_ERROR; | |
7517 | ||
c5d33754 | 7518 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
7519 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7520 | not allowed for procedures. */ | |
7521 | if (sym->attr.is_bind_c == 1) | |
7522 | { | |
7523 | sym->attr.is_bind_c = 0; | |
7524 | if (sym->old_symbol != NULL) | |
7525 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7526 | "variables or common blocks", | |
7527 | &(sym->old_symbol->declared_at)); | |
7528 | else | |
7529 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7530 | "variables or common blocks", &gfc_current_locus); | |
7531 | } | |
75ae7f6c | 7532 | |
7533 | /* C binding names are not allowed for internal procedures. */ | |
7534 | if (gfc_current_state () == COMP_CONTAINS | |
7535 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
7536 | allow_binding_name = false; | |
7537 | else | |
7538 | allow_binding_name = true; | |
7539 | ||
c5d33754 | 7540 | /* Here, we are just checking if it has the bind(c) attribute, and if |
7541 | so, then we need to make sure it's all correct. If it doesn't, | |
7542 | we still need to continue matching the rest of the subroutine line. */ | |
75ae7f6c | 7543 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
c5d33754 | 7544 | if (is_bind_c == MATCH_ERROR) |
7545 | { | |
7546 | /* There was an attempt at the bind(c), but it was wrong. An | |
7547 | error message should have been printed w/in the gfc_match_bind_c | |
7548 | so here we'll just return the MATCH_ERROR. */ | |
7549 | return MATCH_ERROR; | |
7550 | } | |
7551 | ||
7552 | if (is_bind_c == MATCH_YES) | |
7553 | { | |
75ae7f6c | 7554 | /* The following is allowed in the Fortran 2008 draft. */ |
4518e961 | 7555 | if (gfc_current_state () == COMP_CONTAINS |
75ae7f6c | 7556 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
60e19868 | 7557 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
7558 | "at %L may not be specified for an internal " | |
7559 | "procedure", &gfc_current_locus)) | |
75ae7f6c | 7560 | return MATCH_ERROR; |
7561 | ||
c5d33754 | 7562 | if (peek_char != '(') |
7563 | { | |
7564 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
7565 | return MATCH_ERROR; | |
7566 | } | |
76e207a9 | 7567 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, |
60e19868 | 7568 | &(sym->declared_at), 1)) |
c5d33754 | 7569 | return MATCH_ERROR; |
7570 | } | |
8db94b3b | 7571 | |
4ee9c684 | 7572 | if (gfc_match_eos () != MATCH_YES) |
7573 | { | |
7574 | gfc_syntax_error (ST_SUBROUTINE); | |
7575 | return MATCH_ERROR; | |
7576 | } | |
7577 | ||
60e19868 | 7578 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
76e207a9 | 7579 | { |
7580 | if(!sym->attr.module_procedure) | |
7581 | return MATCH_ERROR; | |
7582 | else | |
7583 | gfc_error_check (); | |
7584 | } | |
4ee9c684 | 7585 | |
a34926ba | 7586 | /* Warn if it has the same name as an intrinsic. */ |
8290d53f | 7587 | do_warn_intrinsic_shadow (sym, false); |
a34926ba | 7588 | |
4ee9c684 | 7589 | return MATCH_YES; |
7590 | } | |
7591 | ||
7592 | ||
7136063b | 7593 | /* Check that the NAME identifier in a BIND attribute or statement |
7594 | is conform to C identifier rules. */ | |
7595 | ||
7596 | match | |
7597 | check_bind_name_identifier (char **name) | |
7598 | { | |
7599 | char *n = *name, *p; | |
7600 | ||
7601 | /* Remove leading spaces. */ | |
7602 | while (*n == ' ') | |
7603 | n++; | |
7604 | ||
7605 | /* On an empty string, free memory and set name to NULL. */ | |
7606 | if (*n == '\0') | |
7607 | { | |
7608 | free (*name); | |
7609 | *name = NULL; | |
7610 | return MATCH_YES; | |
7611 | } | |
7612 | ||
7613 | /* Remove trailing spaces. */ | |
7614 | p = n + strlen(n) - 1; | |
7615 | while (*p == ' ') | |
7616 | *(p--) = '\0'; | |
7617 | ||
7618 | /* Insert the identifier into the symbol table. */ | |
7619 | p = xstrdup (n); | |
7620 | free (*name); | |
7621 | *name = p; | |
7622 | ||
7623 | /* Now check that identifier is valid under C rules. */ | |
7624 | if (ISDIGIT (*p)) | |
7625 | { | |
7626 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
7627 | return MATCH_ERROR; | |
7628 | } | |
7629 | ||
7630 | for (; *p; p++) | |
7631 | if (!(ISALNUM (*p) || *p == '_' || *p == '$')) | |
7632 | { | |
7633 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
7634 | return MATCH_ERROR; | |
7635 | } | |
7636 | ||
7637 | return MATCH_YES; | |
7638 | } | |
7639 | ||
7640 | ||
c5d33754 | 7641 | /* Match a BIND(C) specifier, with the optional 'name=' specifier if |
7642 | given, and set the binding label in either the given symbol (if not | |
a0527218 | 7643 | NULL), or in the current_ts. The symbol may be NULL because we may |
c5d33754 | 7644 | encounter the BIND(C) before the declaration itself. Return |
7645 | MATCH_NO if what we're looking at isn't a BIND(C) specifier, | |
7646 | MATCH_ERROR if it is a BIND(C) clause but an error was encountered, | |
7647 | or MATCH_YES if the specifier was correct and the binding label and | |
7648 | bind(c) fields were set correctly for the given symbol or the | |
75ae7f6c | 7649 | current_ts. If allow_binding_name is false, no binding name may be |
7650 | given. */ | |
c5d33754 | 7651 | |
7652 | match | |
75ae7f6c | 7653 | gfc_match_bind_c (gfc_symbol *sym, bool allow_binding_name) |
c5d33754 | 7654 | { |
7136063b | 7655 | char *binding_label = NULL; |
7656 | gfc_expr *e = NULL; | |
c5d33754 | 7657 | |
8db94b3b | 7658 | /* Initialize the flag that specifies whether we encountered a NAME= |
c5d33754 | 7659 | specifier or not. */ |
7660 | has_name_equals = 0; | |
7661 | ||
c5d33754 | 7662 | /* This much we have to be able to match, in this order, if |
7663 | there is a bind(c) label. */ | |
7664 | if (gfc_match (" bind ( c ") != MATCH_YES) | |
7665 | return MATCH_NO; | |
7666 | ||
7667 | /* Now see if there is a binding label, or if we've reached the | |
7668 | end of the bind(c) attribute without one. */ | |
7669 | if (gfc_match_char (',') == MATCH_YES) | |
7670 | { | |
7671 | if (gfc_match (" name = ") != MATCH_YES) | |
7672 | { | |
7673 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
7674 | "at %C"); | |
7675 | /* should give an error message here */ | |
7676 | return MATCH_ERROR; | |
7677 | } | |
7678 | ||
7679 | has_name_equals = 1; | |
7680 | ||
7136063b | 7681 | if (gfc_match_init_expr (&e) != MATCH_YES) |
7682 | { | |
7683 | gfc_free_expr (e); | |
7684 | return MATCH_ERROR; | |
7685 | } | |
8db94b3b | 7686 | |
7136063b | 7687 | if (!gfc_simplify_expr(e, 0)) |
c5d33754 | 7688 | { |
7136063b | 7689 | gfc_error ("NAME= specifier at %C should be a constant expression"); |
7690 | gfc_free_expr (e); | |
7691 | return MATCH_ERROR; | |
c5d33754 | 7692 | } |
7136063b | 7693 | |
7694 | if (e->expr_type != EXPR_CONSTANT || e->ts.type != BT_CHARACTER | |
7695 | || e->ts.kind != gfc_default_character_kind || e->rank != 0) | |
c5d33754 | 7696 | { |
7136063b | 7697 | gfc_error ("NAME= specifier at %C should be a scalar of " |
7698 | "default character kind"); | |
7699 | gfc_free_expr(e); | |
7700 | return MATCH_ERROR; | |
c5d33754 | 7701 | } |
7136063b | 7702 | |
7703 | // Get a C string from the Fortran string constant | |
7704 | binding_label = gfc_widechar_to_char (e->value.character.string, | |
7705 | e->value.character.length); | |
7706 | gfc_free_expr(e); | |
7707 | ||
7708 | // Check that it is valid (old gfc_match_name_C) | |
7709 | if (check_bind_name_identifier (&binding_label) != MATCH_YES) | |
7710 | return MATCH_ERROR; | |
7711 | } | |
c5d33754 | 7712 | |
7713 | /* Get the required right paren. */ | |
7714 | if (gfc_match_char (')') != MATCH_YES) | |
7715 | { | |
7716 | gfc_error ("Missing closing paren for binding label at %C"); | |
7717 | return MATCH_ERROR; | |
7718 | } | |
7719 | ||
75ae7f6c | 7720 | if (has_name_equals && !allow_binding_name) |
7721 | { | |
7722 | gfc_error ("No binding name is allowed in BIND(C) at %C"); | |
7723 | return MATCH_ERROR; | |
7724 | } | |
7725 | ||
7726 | if (has_name_equals && sym != NULL && sym->attr.dummy) | |
7727 | { | |
7728 | gfc_error ("For dummy procedure %s, no binding name is " | |
7729 | "allowed in BIND(C) at %C", sym->name); | |
7730 | return MATCH_ERROR; | |
7731 | } | |
7732 | ||
7733 | ||
c5d33754 | 7734 | /* Save the binding label to the symbol. If sym is null, we're |
7735 | probably matching the typespec attributes of a declaration and | |
7736 | haven't gotten the name yet, and therefore, no symbol yet. */ | |
7b2060ba | 7737 | if (binding_label) |
c5d33754 | 7738 | { |
7739 | if (sym != NULL) | |
7b2060ba | 7740 | sym->binding_label = binding_label; |
c5d33754 | 7741 | else |
7b2060ba | 7742 | curr_binding_label = binding_label; |
c5d33754 | 7743 | } |
75ae7f6c | 7744 | else if (allow_binding_name) |
c5d33754 | 7745 | { |
7746 | /* No binding label, but if symbol isn't null, we | |
75ae7f6c | 7747 | can set the label for it here. |
7748 | If name="" or allow_binding_name is false, no C binding name is | |
293d72e0 | 7749 | created. */ |
c5d33754 | 7750 | if (sym != NULL && sym->name != NULL && has_name_equals == 0) |
7b2060ba | 7751 | sym->binding_label = IDENTIFIER_POINTER (get_identifier (sym->name)); |
c5d33754 | 7752 | } |
94fa7146 | 7753 | |
5cf92482 | 7754 | if (has_name_equals && gfc_current_state () == COMP_INTERFACE |
7755 | && current_interface.type == INTERFACE_ABSTRACT) | |
94fa7146 | 7756 | { |
7757 | gfc_error ("NAME not allowed on BIND(C) for ABSTRACT INTERFACE at %C"); | |
7758 | return MATCH_ERROR; | |
7759 | } | |
7760 | ||
c5d33754 | 7761 | return MATCH_YES; |
7762 | } | |
7763 | ||
7764 | ||
231e961a | 7765 | /* Return nonzero if we're currently compiling a contained procedure. */ |
c0985832 | 7766 | |
7767 | static int | |
7768 | contained_procedure (void) | |
7769 | { | |
1c343287 | 7770 | gfc_state_data *s = gfc_state_stack; |
c0985832 | 7771 | |
1c343287 | 7772 | if ((s->state == COMP_SUBROUTINE || s->state == COMP_FUNCTION) |
7773 | && s->previous != NULL && s->previous->state == COMP_CONTAINS) | |
7774 | return 1; | |
c0985832 | 7775 | |
7776 | return 0; | |
7777 | } | |
7778 | ||
e14bee04 | 7779 | /* Set the kind of each enumerator. The kind is selected such that it is |
3b6a4b41 | 7780 | interoperable with the corresponding C enumeration type, making |
7781 | sure that -fshort-enums is honored. */ | |
7782 | ||
7783 | static void | |
7784 | set_enum_kind(void) | |
7785 | { | |
7786 | enumerator_history *current_history = NULL; | |
7787 | int kind; | |
7788 | int i; | |
7789 | ||
7790 | if (max_enum == NULL || enum_history == NULL) | |
7791 | return; | |
7792 | ||
6f092e31 | 7793 | if (!flag_short_enums) |
e14bee04 | 7794 | return; |
7795 | ||
3b6a4b41 | 7796 | i = 0; |
7797 | do | |
7798 | { | |
7799 | kind = gfc_integer_kinds[i++].kind; | |
7800 | } | |
e14bee04 | 7801 | while (kind < gfc_c_int_kind |
3b6a4b41 | 7802 | && gfc_check_integer_range (max_enum->initializer->value.integer, |
7803 | kind) != ARITH_OK); | |
7804 | ||
7805 | current_history = enum_history; | |
7806 | while (current_history != NULL) | |
7807 | { | |
7808 | current_history->sym->ts.kind = kind; | |
7809 | current_history = current_history->next; | |
7810 | } | |
7811 | } | |
7812 | ||
1a9745d2 | 7813 | |
4ee9c684 | 7814 | /* Match any of the various end-block statements. Returns the type of |
6a7084d7 | 7815 | END to the caller. The END INTERFACE, END IF, END DO, END SELECT |
7816 | and END BLOCK statements cannot be replaced by a single END statement. */ | |
4ee9c684 | 7817 | |
7818 | match | |
1a9745d2 | 7819 | gfc_match_end (gfc_statement *st) |
4ee9c684 | 7820 | { |
7821 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7822 | gfc_compile_state state; | |
7823 | locus old_loc; | |
7824 | const char *block_name; | |
7825 | const char *target; | |
c0985832 | 7826 | int eos_ok; |
4ee9c684 | 7827 | match m; |
9e5e87d9 | 7828 | gfc_namespace *parent_ns, *ns, *prev_ns; |
7829 | gfc_namespace **nsp; | |
6ade726e | 7830 | bool abreviated_modproc_decl = false; |
cc7124a6 | 7831 | bool got_matching_end = false; |
4ee9c684 | 7832 | |
cbb9e6aa | 7833 | old_loc = gfc_current_locus; |
4ee9c684 | 7834 | if (gfc_match ("end") != MATCH_YES) |
7835 | return MATCH_NO; | |
7836 | ||
7837 | state = gfc_current_state (); | |
1a9745d2 | 7838 | block_name = gfc_current_block () == NULL |
7839 | ? NULL : gfc_current_block ()->name; | |
4ee9c684 | 7840 | |
d18a512a | 7841 | switch (state) |
4ee9c684 | 7842 | { |
d18a512a | 7843 | case COMP_ASSOCIATE: |
7844 | case COMP_BLOCK: | |
ea9e8242 | 7845 | if (gfc_str_startswith (block_name, "block@")) |
d18a512a | 7846 | block_name = NULL; |
7847 | break; | |
7848 | ||
7849 | case COMP_CONTAINS: | |
7850 | case COMP_DERIVED_CONTAINS: | |
4ee9c684 | 7851 | state = gfc_state_stack->previous->state; |
1a9745d2 | 7852 | block_name = gfc_state_stack->previous->sym == NULL |
7853 | ? NULL : gfc_state_stack->previous->sym->name; | |
6ade726e | 7854 | abreviated_modproc_decl = gfc_state_stack->previous->sym |
7855 | && gfc_state_stack->previous->sym->abr_modproc_decl; | |
d18a512a | 7856 | break; |
7857 | ||
7858 | default: | |
7859 | break; | |
4ee9c684 | 7860 | } |
7861 | ||
6ade726e | 7862 | if (!abreviated_modproc_decl) |
7863 | abreviated_modproc_decl = gfc_current_block () | |
7864 | && gfc_current_block ()->abr_modproc_decl; | |
4b8eb6ca | 7865 | |
4ee9c684 | 7866 | switch (state) |
7867 | { | |
7868 | case COMP_NONE: | |
7869 | case COMP_PROGRAM: | |
7870 | *st = ST_END_PROGRAM; | |
7871 | target = " program"; | |
c0985832 | 7872 | eos_ok = 1; |
4ee9c684 | 7873 | break; |
7874 | ||
7875 | case COMP_SUBROUTINE: | |
7876 | *st = ST_END_SUBROUTINE; | |
4b8eb6ca | 7877 | if (!abreviated_modproc_decl) |
4ee9c684 | 7878 | target = " subroutine"; |
4b8eb6ca | 7879 | else |
7880 | target = " procedure"; | |
c0985832 | 7881 | eos_ok = !contained_procedure (); |
4ee9c684 | 7882 | break; |
7883 | ||
7884 | case COMP_FUNCTION: | |
7885 | *st = ST_END_FUNCTION; | |
4b8eb6ca | 7886 | if (!abreviated_modproc_decl) |
4ee9c684 | 7887 | target = " function"; |
4b8eb6ca | 7888 | else |
7889 | target = " procedure"; | |
c0985832 | 7890 | eos_ok = !contained_procedure (); |
4ee9c684 | 7891 | break; |
7892 | ||
7893 | case COMP_BLOCK_DATA: | |
7894 | *st = ST_END_BLOCK_DATA; | |
7895 | target = " block data"; | |
c0985832 | 7896 | eos_ok = 1; |
4ee9c684 | 7897 | break; |
7898 | ||
7899 | case COMP_MODULE: | |
7900 | *st = ST_END_MODULE; | |
7901 | target = " module"; | |
c0985832 | 7902 | eos_ok = 1; |
4ee9c684 | 7903 | break; |
7904 | ||
4b8eb6ca | 7905 | case COMP_SUBMODULE: |
7906 | *st = ST_END_SUBMODULE; | |
7907 | target = " submodule"; | |
7908 | eos_ok = 1; | |
7909 | break; | |
7910 | ||
4ee9c684 | 7911 | case COMP_INTERFACE: |
7912 | *st = ST_END_INTERFACE; | |
7913 | target = " interface"; | |
c0985832 | 7914 | eos_ok = 0; |
4ee9c684 | 7915 | break; |
7916 | ||
d7cd448a | 7917 | case COMP_MAP: |
7918 | *st = ST_END_MAP; | |
7919 | target = " map"; | |
7920 | eos_ok = 0; | |
7921 | break; | |
7922 | ||
7923 | case COMP_UNION: | |
7924 | *st = ST_END_UNION; | |
7925 | target = " union"; | |
7926 | eos_ok = 0; | |
7927 | break; | |
7928 | ||
7929 | case COMP_STRUCTURE: | |
7930 | *st = ST_END_STRUCTURE; | |
7931 | target = " structure"; | |
7932 | eos_ok = 0; | |
7933 | break; | |
7934 | ||
4ee9c684 | 7935 | case COMP_DERIVED: |
7fd88f6e | 7936 | case COMP_DERIVED_CONTAINS: |
4ee9c684 | 7937 | *st = ST_END_TYPE; |
7938 | target = " type"; | |
c0985832 | 7939 | eos_ok = 0; |
4ee9c684 | 7940 | break; |
7941 | ||
d18a512a | 7942 | case COMP_ASSOCIATE: |
7943 | *st = ST_END_ASSOCIATE; | |
7944 | target = " associate"; | |
7945 | eos_ok = 0; | |
7946 | break; | |
7947 | ||
6a7084d7 | 7948 | case COMP_BLOCK: |
7949 | *st = ST_END_BLOCK; | |
7950 | target = " block"; | |
7951 | eos_ok = 0; | |
7952 | break; | |
7953 | ||
4ee9c684 | 7954 | case COMP_IF: |
7955 | *st = ST_ENDIF; | |
7956 | target = " if"; | |
c0985832 | 7957 | eos_ok = 0; |
4ee9c684 | 7958 | break; |
7959 | ||
7960 | case COMP_DO: | |
55ea8666 | 7961 | case COMP_DO_CONCURRENT: |
4ee9c684 | 7962 | *st = ST_ENDDO; |
7963 | target = " do"; | |
c0985832 | 7964 | eos_ok = 0; |
4ee9c684 | 7965 | break; |
7966 | ||
c6cd3066 | 7967 | case COMP_CRITICAL: |
7968 | *st = ST_END_CRITICAL; | |
7969 | target = " critical"; | |
7970 | eos_ok = 0; | |
7971 | break; | |
7972 | ||
4ee9c684 | 7973 | case COMP_SELECT: |
1de1b1a9 | 7974 | case COMP_SELECT_TYPE: |
4ee9c684 | 7975 | *st = ST_END_SELECT; |
7976 | target = " select"; | |
c0985832 | 7977 | eos_ok = 0; |
4ee9c684 | 7978 | break; |
7979 | ||
7980 | case COMP_FORALL: | |
7981 | *st = ST_END_FORALL; | |
7982 | target = " forall"; | |
c0985832 | 7983 | eos_ok = 0; |
4ee9c684 | 7984 | break; |
7985 | ||
7986 | case COMP_WHERE: | |
7987 | *st = ST_END_WHERE; | |
7988 | target = " where"; | |
c0985832 | 7989 | eos_ok = 0; |
4ee9c684 | 7990 | break; |
7991 | ||
3b6a4b41 | 7992 | case COMP_ENUM: |
7993 | *st = ST_END_ENUM; | |
7994 | target = " enum"; | |
7995 | eos_ok = 0; | |
7996 | last_initializer = NULL; | |
7997 | set_enum_kind (); | |
7998 | gfc_free_enum_history (); | |
7999 | break; | |
8000 | ||
4ee9c684 | 8001 | default: |
8002 | gfc_error ("Unexpected END statement at %C"); | |
8003 | goto cleanup; | |
8004 | } | |
8005 | ||
8d779aef | 8006 | old_loc = gfc_current_locus; |
4ee9c684 | 8007 | if (gfc_match_eos () == MATCH_YES) |
8008 | { | |
4b20e9cf | 8009 | if (!eos_ok && (*st == ST_END_SUBROUTINE || *st == ST_END_FUNCTION)) |
8010 | { | |
60e19868 | 8011 | if (!gfc_notify_std (GFC_STD_F2008, "END statement " |
76e207a9 | 8012 | "instead of %s statement at %L", |
4b8eb6ca | 8013 | abreviated_modproc_decl ? "END PROCEDURE" |
8014 | : gfc_ascii_statement(*st), &old_loc)) | |
4b20e9cf | 8015 | goto cleanup; |
8016 | } | |
8017 | else if (!eos_ok) | |
4ee9c684 | 8018 | { |
f6d0e37a | 8019 | /* We would have required END [something]. */ |
d197c9ee | 8020 | gfc_error ("%s statement expected at %L", |
8021 | gfc_ascii_statement (*st), &old_loc); | |
4ee9c684 | 8022 | goto cleanup; |
8023 | } | |
8024 | ||
8025 | return MATCH_YES; | |
8026 | } | |
8027 | ||
8028 | /* Verify that we've got the sort of end-block that we're expecting. */ | |
8029 | if (gfc_match (target) != MATCH_YES) | |
8030 | { | |
4b8eb6ca | 8031 | gfc_error ("Expecting %s statement at %L", abreviated_modproc_decl |
8032 | ? "END PROCEDURE" : gfc_ascii_statement(*st), &old_loc); | |
4ee9c684 | 8033 | goto cleanup; |
8034 | } | |
cc7124a6 | 8035 | else |
8036 | got_matching_end = true; | |
4ee9c684 | 8037 | |
8d779aef | 8038 | old_loc = gfc_current_locus; |
4ee9c684 | 8039 | /* If we're at the end, make sure a block name wasn't required. */ |
8040 | if (gfc_match_eos () == MATCH_YES) | |
8041 | { | |
8042 | ||
0d0ce415 | 8043 | if (*st != ST_ENDDO && *st != ST_ENDIF && *st != ST_END_SELECT |
c6cd3066 | 8044 | && *st != ST_END_FORALL && *st != ST_END_WHERE && *st != ST_END_BLOCK |
d18a512a | 8045 | && *st != ST_END_ASSOCIATE && *st != ST_END_CRITICAL) |
4ee9c684 | 8046 | return MATCH_YES; |
8047 | ||
6a7084d7 | 8048 | if (!block_name) |
4ee9c684 | 8049 | return MATCH_YES; |
8050 | ||
716da296 | 8051 | gfc_error ("Expected block name of %qs in %s statement at %L", |
8d779aef | 8052 | block_name, gfc_ascii_statement (*st), &old_loc); |
4ee9c684 | 8053 | |
8054 | return MATCH_ERROR; | |
8055 | } | |
8056 | ||
8057 | /* END INTERFACE has a special handler for its several possible endings. */ | |
8058 | if (*st == ST_END_INTERFACE) | |
8059 | return gfc_match_end_interface (); | |
8060 | ||
f6d0e37a | 8061 | /* We haven't hit the end of statement, so what is left must be an |
8062 | end-name. */ | |
4ee9c684 | 8063 | m = gfc_match_space (); |
8064 | if (m == MATCH_YES) | |
8065 | m = gfc_match_name (name); | |
8066 | ||
8067 | if (m == MATCH_NO) | |
8068 | gfc_error ("Expected terminating name at %C"); | |
8069 | if (m != MATCH_YES) | |
8070 | goto cleanup; | |
8071 | ||
8072 | if (block_name == NULL) | |
8073 | goto syntax; | |
8074 | ||
df8f279f | 8075 | /* We have to pick out the declared submodule name from the composite |
8076 | required by F2008:11.2.3 para 2, which ends in the declared name. */ | |
8077 | if (state == COMP_SUBMODULE) | |
8078 | block_name = strchr (block_name, '.') + 1; | |
8079 | ||
1e057e9b | 8080 | if (strcmp (name, block_name) != 0 && strcmp (block_name, "ppr@") != 0) |
4ee9c684 | 8081 | { |
716da296 | 8082 | gfc_error ("Expected label %qs for %s statement at %C", block_name, |
4ee9c684 | 8083 | gfc_ascii_statement (*st)); |
8084 | goto cleanup; | |
8085 | } | |
1e057e9b | 8086 | /* Procedure pointer as function result. */ |
8087 | else if (strcmp (block_name, "ppr@") == 0 | |
8088 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) != 0) | |
8089 | { | |
716da296 | 8090 | gfc_error ("Expected label %qs for %s statement at %C", |
1e057e9b | 8091 | gfc_current_block ()->ns->proc_name->name, |
8092 | gfc_ascii_statement (*st)); | |
8093 | goto cleanup; | |
8094 | } | |
4ee9c684 | 8095 | |
8096 | if (gfc_match_eos () == MATCH_YES) | |
8097 | return MATCH_YES; | |
8098 | ||
8099 | syntax: | |
8100 | gfc_syntax_error (*st); | |
8101 | ||
8102 | cleanup: | |
cbb9e6aa | 8103 | gfc_current_locus = old_loc; |
9e5e87d9 | 8104 | |
8105 | /* If we are missing an END BLOCK, we created a half-ready namespace. | |
8106 | Remove it from the parent namespace's sibling list. */ | |
8107 | ||
cc7124a6 | 8108 | while (state == COMP_BLOCK && !got_matching_end) |
9e5e87d9 | 8109 | { |
8110 | parent_ns = gfc_current_ns->parent; | |
8111 | ||
8112 | nsp = &(gfc_state_stack->previous->tail->ext.block.ns); | |
8113 | ||
8114 | prev_ns = NULL; | |
8115 | ns = *nsp; | |
8116 | while (ns) | |
8117 | { | |
8118 | if (ns == gfc_current_ns) | |
8119 | { | |
8120 | if (prev_ns == NULL) | |
8121 | *nsp = NULL; | |
8122 | else | |
8123 | prev_ns->sibling = ns->sibling; | |
8124 | } | |
8125 | prev_ns = ns; | |
8126 | ns = ns->sibling; | |
8127 | } | |
cc7124a6 | 8128 | |
9e5e87d9 | 8129 | gfc_free_namespace (gfc_current_ns); |
8130 | gfc_current_ns = parent_ns; | |
8097c1a6 | 8131 | gfc_state_stack = gfc_state_stack->previous; |
8132 | state = gfc_current_state (); | |
9e5e87d9 | 8133 | } |
8134 | ||
4ee9c684 | 8135 | return MATCH_ERROR; |
8136 | } | |
8137 | ||
8138 | ||
8139 | ||
8140 | /***************** Attribute declaration statements ****************/ | |
8141 | ||
8142 | /* Set the attribute of a single variable. */ | |
8143 | ||
8144 | static match | |
8145 | attr_decl1 (void) | |
8146 | { | |
8147 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8148 | gfc_array_spec *as; | |
75e5ecf3 | 8149 | |
8150 | /* Workaround -Wmaybe-uninitialized false positive during | |
8151 | profiledbootstrap by initializing them. */ | |
8152 | gfc_symbol *sym = NULL; | |
4ee9c684 | 8153 | locus var_locus; |
8154 | match m; | |
8155 | ||
8156 | as = NULL; | |
8157 | ||
8158 | m = gfc_match_name (name); | |
8159 | if (m != MATCH_YES) | |
8160 | goto cleanup; | |
8161 | ||
36b0a1b0 | 8162 | if (find_special (name, &sym, false)) |
4ee9c684 | 8163 | return MATCH_ERROR; |
8164 | ||
60e19868 | 8165 | if (!check_function_name (name)) |
f3e89339 | 8166 | { |
8167 | m = MATCH_ERROR; | |
8168 | goto cleanup; | |
8169 | } | |
8db94b3b | 8170 | |
cbb9e6aa | 8171 | var_locus = gfc_current_locus; |
4ee9c684 | 8172 | |
8173 | /* Deal with possible array specification for certain attributes. */ | |
8174 | if (current_attr.dimension | |
aff518b0 | 8175 | || current_attr.codimension |
4ee9c684 | 8176 | || current_attr.allocatable |
8177 | || current_attr.pointer | |
8178 | || current_attr.target) | |
8179 | { | |
aff518b0 | 8180 | m = gfc_match_array_spec (&as, !current_attr.codimension, |
8181 | !current_attr.dimension | |
8182 | && !current_attr.pointer | |
8183 | && !current_attr.target); | |
4ee9c684 | 8184 | if (m == MATCH_ERROR) |
8185 | goto cleanup; | |
8186 | ||
8187 | if (current_attr.dimension && m == MATCH_NO) | |
8188 | { | |
1a9745d2 | 8189 | gfc_error ("Missing array specification at %L in DIMENSION " |
8190 | "statement", &var_locus); | |
4ee9c684 | 8191 | m = MATCH_ERROR; |
8192 | goto cleanup; | |
8193 | } | |
8194 | ||
13aebeb0 | 8195 | if (current_attr.dimension && sym->value) |
8196 | { | |
8197 | gfc_error ("Dimensions specified for %s at %L after its " | |
d0abd9e0 | 8198 | "initialization", sym->name, &var_locus); |
13aebeb0 | 8199 | m = MATCH_ERROR; |
8200 | goto cleanup; | |
8201 | } | |
8202 | ||
aff518b0 | 8203 | if (current_attr.codimension && m == MATCH_NO) |
8204 | { | |
8205 | gfc_error ("Missing array specification at %L in CODIMENSION " | |
8206 | "statement", &var_locus); | |
8207 | m = MATCH_ERROR; | |
8208 | goto cleanup; | |
8209 | } | |
8210 | ||
4ee9c684 | 8211 | if ((current_attr.allocatable || current_attr.pointer) |
8212 | && (m == MATCH_YES) && (as->type != AS_DEFERRED)) | |
8213 | { | |
1a9745d2 | 8214 | gfc_error ("Array specification must be deferred at %L", &var_locus); |
4ee9c684 | 8215 | m = MATCH_ERROR; |
8216 | goto cleanup; | |
8217 | } | |
8218 | } | |
8219 | ||
b3704193 | 8220 | /* Update symbol table. DIMENSION attribute is set in |
8221 | gfc_set_array_spec(). For CLASS variables, this must be applied | |
607ae689 | 8222 | to the first component, or '_data' field. */ |
a33fbb6f | 8223 | if (sym->ts.type == BT_CLASS && sym->ts.u.derived->attr.is_class) |
4ee9c684 | 8224 | { |
60e19868 | 8225 | if (!gfc_copy_attr (&CLASS_DATA(sym)->attr, ¤t_attr, &var_locus)) |
b3704193 | 8226 | { |
8227 | m = MATCH_ERROR; | |
8228 | goto cleanup; | |
8229 | } | |
b3704193 | 8230 | } |
8231 | else | |
8232 | { | |
aff518b0 | 8233 | if (current_attr.dimension == 0 && current_attr.codimension == 0 |
60e19868 | 8234 | && !gfc_copy_attr (&sym->attr, ¤t_attr, &var_locus)) |
b3704193 | 8235 | { |
8236 | m = MATCH_ERROR; | |
8237 | goto cleanup; | |
8238 | } | |
4ee9c684 | 8239 | } |
8db94b3b | 8240 | |
fa102e56 | 8241 | if (sym->ts.type == BT_CLASS |
e8393d49 | 8242 | && !gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as)) |
29dae2bf | 8243 | { |
8244 | m = MATCH_ERROR; | |
8245 | goto cleanup; | |
8246 | } | |
4ee9c684 | 8247 | |
60e19868 | 8248 | if (!gfc_set_array_spec (sym, as, &var_locus)) |
4ee9c684 | 8249 | { |
8250 | m = MATCH_ERROR; | |
8251 | goto cleanup; | |
8252 | } | |
e14bee04 | 8253 | |
b549d2a5 | 8254 | if (sym->attr.cray_pointee && sym->as != NULL) |
8255 | { | |
8256 | /* Fix the array spec. */ | |
8db94b3b | 8257 | m = gfc_mod_pointee_as (sym->as); |
b549d2a5 | 8258 | if (m == MATCH_ERROR) |
8259 | goto cleanup; | |
8260 | } | |
4ee9c684 | 8261 | |
60e19868 | 8262 | if (!gfc_add_attribute (&sym->attr, &var_locus)) |
14efb9b7 | 8263 | { |
8264 | m = MATCH_ERROR; | |
8265 | goto cleanup; | |
8266 | } | |
8267 | ||
4ee9c684 | 8268 | if ((current_attr.external || current_attr.intrinsic) |
8269 | && sym->attr.flavor != FL_PROCEDURE | |
60e19868 | 8270 | && !gfc_add_flavor (&sym->attr, FL_PROCEDURE, sym->name, NULL)) |
4ee9c684 | 8271 | { |
8272 | m = MATCH_ERROR; | |
8273 | goto cleanup; | |
8274 | } | |
8275 | ||
1e057e9b | 8276 | add_hidden_procptr_result (sym); |
8277 | ||
4ee9c684 | 8278 | return MATCH_YES; |
8279 | ||
8280 | cleanup: | |
8281 | gfc_free_array_spec (as); | |
8282 | return m; | |
8283 | } | |
8284 | ||
8285 | ||
8286 | /* Generic attribute declaration subroutine. Used for attributes that | |
8287 | just have a list of names. */ | |
8288 | ||
8289 | static match | |
8290 | attr_decl (void) | |
8291 | { | |
8292 | match m; | |
8293 | ||
8294 | /* Gobble the optional double colon, by simply ignoring the result | |
8295 | of gfc_match(). */ | |
8296 | gfc_match (" ::"); | |
8297 | ||
8298 | for (;;) | |
8299 | { | |
8300 | m = attr_decl1 (); | |
8301 | if (m != MATCH_YES) | |
8302 | break; | |
8303 | ||
8304 | if (gfc_match_eos () == MATCH_YES) | |
8305 | { | |
8306 | m = MATCH_YES; | |
8307 | break; | |
8308 | } | |
8309 | ||
8310 | if (gfc_match_char (',') != MATCH_YES) | |
8311 | { | |
8312 | gfc_error ("Unexpected character in variable list at %C"); | |
8313 | m = MATCH_ERROR; | |
8314 | break; | |
8315 | } | |
8316 | } | |
8317 | ||
8318 | return m; | |
8319 | } | |
8320 | ||
8321 | ||
b549d2a5 | 8322 | /* This routine matches Cray Pointer declarations of the form: |
8323 | pointer ( <pointer>, <pointee> ) | |
8324 | or | |
e14bee04 | 8325 | pointer ( <pointer1>, <pointee1> ), ( <pointer2>, <pointee2> ), ... |
8326 | The pointer, if already declared, should be an integer. Otherwise, we | |
b549d2a5 | 8327 | set it as BT_INTEGER with kind gfc_index_integer_kind. The pointee may |
8328 | be either a scalar, or an array declaration. No space is allocated for | |
e14bee04 | 8329 | the pointee. For the statement |
b549d2a5 | 8330 | pointer (ipt, ar(10)) |
8331 | any subsequent uses of ar will be translated (in C-notation) as | |
e14bee04 | 8332 | ar(i) => ((<type> *) ipt)(i) |
b7bf3f81 | 8333 | After gimplification, pointee variable will disappear in the code. */ |
b549d2a5 | 8334 | |
8335 | static match | |
8336 | cray_pointer_decl (void) | |
8337 | { | |
8338 | match m; | |
aff518b0 | 8339 | gfc_array_spec *as = NULL; |
b549d2a5 | 8340 | gfc_symbol *cptr; /* Pointer symbol. */ |
8341 | gfc_symbol *cpte; /* Pointee symbol. */ | |
8342 | locus var_locus; | |
8343 | bool done = false; | |
8344 | ||
8345 | while (!done) | |
8346 | { | |
8347 | if (gfc_match_char ('(') != MATCH_YES) | |
8348 | { | |
0d2b3c9c | 8349 | gfc_error ("Expected %<(%> at %C"); |
e14bee04 | 8350 | return MATCH_ERROR; |
b549d2a5 | 8351 | } |
e14bee04 | 8352 | |
b549d2a5 | 8353 | /* Match pointer. */ |
8354 | var_locus = gfc_current_locus; | |
8355 | gfc_clear_attr (¤t_attr); | |
8356 | gfc_add_cray_pointer (¤t_attr, &var_locus); | |
8357 | current_ts.type = BT_INTEGER; | |
8358 | current_ts.kind = gfc_index_integer_kind; | |
8359 | ||
e14bee04 | 8360 | m = gfc_match_symbol (&cptr, 0); |
b549d2a5 | 8361 | if (m != MATCH_YES) |
8362 | { | |
8363 | gfc_error ("Expected variable name at %C"); | |
8364 | return m; | |
8365 | } | |
e14bee04 | 8366 | |
60e19868 | 8367 | if (!gfc_add_cray_pointer (&cptr->attr, &var_locus)) |
b549d2a5 | 8368 | return MATCH_ERROR; |
8369 | ||
e14bee04 | 8370 | gfc_set_sym_referenced (cptr); |
b549d2a5 | 8371 | |
8372 | if (cptr->ts.type == BT_UNKNOWN) /* Override the type, if necessary. */ | |
8373 | { | |
8374 | cptr->ts.type = BT_INTEGER; | |
e14bee04 | 8375 | cptr->ts.kind = gfc_index_integer_kind; |
b549d2a5 | 8376 | } |
8377 | else if (cptr->ts.type != BT_INTEGER) | |
8378 | { | |
7698a624 | 8379 | gfc_error ("Cray pointer at %C must be an integer"); |
b549d2a5 | 8380 | return MATCH_ERROR; |
8381 | } | |
8382 | else if (cptr->ts.kind < gfc_index_integer_kind) | |
6f521718 | 8383 | gfc_warning (0, "Cray pointer at %C has %d bytes of precision;" |
7698a624 | 8384 | " memory addresses require %d bytes", |
1a9745d2 | 8385 | cptr->ts.kind, gfc_index_integer_kind); |
b549d2a5 | 8386 | |
8387 | if (gfc_match_char (',') != MATCH_YES) | |
8388 | { | |
8389 | gfc_error ("Expected \",\" at %C"); | |
e14bee04 | 8390 | return MATCH_ERROR; |
b549d2a5 | 8391 | } |
8392 | ||
e14bee04 | 8393 | /* Match Pointee. */ |
b549d2a5 | 8394 | var_locus = gfc_current_locus; |
8395 | gfc_clear_attr (¤t_attr); | |
8396 | gfc_add_cray_pointee (¤t_attr, &var_locus); | |
8397 | current_ts.type = BT_UNKNOWN; | |
8398 | current_ts.kind = 0; | |
8399 | ||
8400 | m = gfc_match_symbol (&cpte, 0); | |
8401 | if (m != MATCH_YES) | |
8402 | { | |
8403 | gfc_error ("Expected variable name at %C"); | |
8404 | return m; | |
8405 | } | |
e14bee04 | 8406 | |
b549d2a5 | 8407 | /* Check for an optional array spec. */ |
aff518b0 | 8408 | m = gfc_match_array_spec (&as, true, false); |
b549d2a5 | 8409 | if (m == MATCH_ERROR) |
8410 | { | |
8411 | gfc_free_array_spec (as); | |
8412 | return m; | |
8413 | } | |
8414 | else if (m == MATCH_NO) | |
8415 | { | |
8416 | gfc_free_array_spec (as); | |
8417 | as = NULL; | |
8db94b3b | 8418 | } |
b549d2a5 | 8419 | |
60e19868 | 8420 | if (!gfc_add_cray_pointee (&cpte->attr, &var_locus)) |
b549d2a5 | 8421 | return MATCH_ERROR; |
8422 | ||
8423 | gfc_set_sym_referenced (cpte); | |
8424 | ||
8425 | if (cpte->as == NULL) | |
8426 | { | |
60e19868 | 8427 | if (!gfc_set_array_spec (cpte, as, &var_locus)) |
b549d2a5 | 8428 | gfc_internal_error ("Couldn't set Cray pointee array spec."); |
8429 | } | |
8430 | else if (as != NULL) | |
8431 | { | |
7698a624 | 8432 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
b549d2a5 | 8433 | gfc_free_array_spec (as); |
8434 | return MATCH_ERROR; | |
8435 | } | |
8db94b3b | 8436 | |
b549d2a5 | 8437 | as = NULL; |
8db94b3b | 8438 | |
b549d2a5 | 8439 | if (cpte->as != NULL) |
8440 | { | |
8441 | /* Fix array spec. */ | |
8442 | m = gfc_mod_pointee_as (cpte->as); | |
8443 | if (m == MATCH_ERROR) | |
8444 | return m; | |
8db94b3b | 8445 | } |
8446 | ||
b549d2a5 | 8447 | /* Point the Pointee at the Pointer. */ |
b7bf3f81 | 8448 | cpte->cp_pointer = cptr; |
b549d2a5 | 8449 | |
8450 | if (gfc_match_char (')') != MATCH_YES) | |
8451 | { | |
8452 | gfc_error ("Expected \")\" at %C"); | |
8db94b3b | 8453 | return MATCH_ERROR; |
b549d2a5 | 8454 | } |
8455 | m = gfc_match_char (','); | |
8456 | if (m != MATCH_YES) | |
8457 | done = true; /* Stop searching for more declarations. */ | |
8458 | ||
8459 | } | |
8db94b3b | 8460 | |
b549d2a5 | 8461 | if (m == MATCH_ERROR /* Failed when trying to find ',' above. */ |
8462 | || gfc_match_eos () != MATCH_YES) | |
8463 | { | |
0d2b3c9c | 8464 | gfc_error ("Expected %<,%> or end of statement at %C"); |
b549d2a5 | 8465 | return MATCH_ERROR; |
8466 | } | |
8467 | return MATCH_YES; | |
8468 | } | |
8469 | ||
8470 | ||
4ee9c684 | 8471 | match |
8472 | gfc_match_external (void) | |
8473 | { | |
8474 | ||
8475 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 8476 | current_attr.external = 1; |
4ee9c684 | 8477 | |
8478 | return attr_decl (); | |
8479 | } | |
8480 | ||
8481 | ||
4ee9c684 | 8482 | match |
8483 | gfc_match_intent (void) | |
8484 | { | |
8485 | sym_intent intent; | |
8486 | ||
6a7084d7 | 8487 | /* This is not allowed within a BLOCK construct! */ |
8488 | if (gfc_current_state () == COMP_BLOCK) | |
8489 | { | |
8490 | gfc_error ("INTENT is not allowed inside of BLOCK at %C"); | |
8491 | return MATCH_ERROR; | |
8492 | } | |
8493 | ||
4ee9c684 | 8494 | intent = match_intent_spec (); |
8495 | if (intent == INTENT_UNKNOWN) | |
8496 | return MATCH_ERROR; | |
8497 | ||
8498 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 8499 | current_attr.intent = intent; |
4ee9c684 | 8500 | |
8501 | return attr_decl (); | |
8502 | } | |
8503 | ||
8504 | ||
8505 | match | |
8506 | gfc_match_intrinsic (void) | |
8507 | { | |
8508 | ||
8509 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 8510 | current_attr.intrinsic = 1; |
4ee9c684 | 8511 | |
8512 | return attr_decl (); | |
8513 | } | |
8514 | ||
8515 | ||
8516 | match | |
8517 | gfc_match_optional (void) | |
8518 | { | |
6a7084d7 | 8519 | /* This is not allowed within a BLOCK construct! */ |
8520 | if (gfc_current_state () == COMP_BLOCK) | |
8521 | { | |
8522 | gfc_error ("OPTIONAL is not allowed inside of BLOCK at %C"); | |
8523 | return MATCH_ERROR; | |
8524 | } | |
4ee9c684 | 8525 | |
8526 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 8527 | current_attr.optional = 1; |
4ee9c684 | 8528 | |
8529 | return attr_decl (); | |
8530 | } | |
8531 | ||
8532 | ||
8533 | match | |
8534 | gfc_match_pointer (void) | |
8535 | { | |
b549d2a5 | 8536 | gfc_gobble_whitespace (); |
e0be6f02 | 8537 | if (gfc_peek_ascii_char () == '(') |
b549d2a5 | 8538 | { |
829d7a08 | 8539 | if (!flag_cray_pointer) |
b549d2a5 | 8540 | { |
1a9745d2 | 8541 | gfc_error ("Cray pointer declaration at %C requires -fcray-pointer " |
8542 | "flag"); | |
b549d2a5 | 8543 | return MATCH_ERROR; |
8544 | } | |
8545 | return cray_pointer_decl (); | |
8546 | } | |
8547 | else | |
8548 | { | |
8549 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 8550 | current_attr.pointer = 1; |
8db94b3b | 8551 | |
b549d2a5 | 8552 | return attr_decl (); |
8553 | } | |
4ee9c684 | 8554 | } |
8555 | ||
8556 | ||
8557 | match | |
8558 | gfc_match_allocatable (void) | |
8559 | { | |
4ee9c684 | 8560 | gfc_clear_attr (¤t_attr); |
14efb9b7 | 8561 | current_attr.allocatable = 1; |
4ee9c684 | 8562 | |
8563 | return attr_decl (); | |
8564 | } | |
8565 | ||
8566 | ||
aff518b0 | 8567 | match |
8568 | gfc_match_codimension (void) | |
8569 | { | |
8570 | gfc_clear_attr (¤t_attr); | |
8571 | current_attr.codimension = 1; | |
8572 | ||
8573 | return attr_decl (); | |
8574 | } | |
8575 | ||
8576 | ||
b3c3927c | 8577 | match |
8578 | gfc_match_contiguous (void) | |
8579 | { | |
60e19868 | 8580 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS statement at %C")) |
b3c3927c | 8581 | return MATCH_ERROR; |
8582 | ||
8583 | gfc_clear_attr (¤t_attr); | |
8584 | current_attr.contiguous = 1; | |
8585 | ||
8586 | return attr_decl (); | |
8587 | } | |
8588 | ||
8589 | ||
4ee9c684 | 8590 | match |
8591 | gfc_match_dimension (void) | |
8592 | { | |
4ee9c684 | 8593 | gfc_clear_attr (¤t_attr); |
14efb9b7 | 8594 | current_attr.dimension = 1; |
4ee9c684 | 8595 | |
8596 | return attr_decl (); | |
8597 | } | |
8598 | ||
8599 | ||
8600 | match | |
8601 | gfc_match_target (void) | |
8602 | { | |
4ee9c684 | 8603 | gfc_clear_attr (¤t_attr); |
14efb9b7 | 8604 | current_attr.target = 1; |
4ee9c684 | 8605 | |
8606 | return attr_decl (); | |
8607 | } | |
8608 | ||
8609 | ||
8610 | /* Match the list of entities being specified in a PUBLIC or PRIVATE | |
8611 | statement. */ | |
8612 | ||
8613 | static match | |
8614 | access_attr_decl (gfc_statement st) | |
8615 | { | |
8616 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8617 | interface_type type; | |
8618 | gfc_user_op *uop; | |
c2958b6b | 8619 | gfc_symbol *sym, *dt_sym; |
dcb1b019 | 8620 | gfc_intrinsic_op op; |
4ee9c684 | 8621 | match m; |
8622 | ||
8623 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8624 | goto done; | |
8625 | ||
8626 | for (;;) | |
8627 | { | |
dcb1b019 | 8628 | m = gfc_match_generic_spec (&type, name, &op); |
4ee9c684 | 8629 | if (m == MATCH_NO) |
8630 | goto syntax; | |
8631 | if (m == MATCH_ERROR) | |
8632 | return MATCH_ERROR; | |
8633 | ||
8634 | switch (type) | |
8635 | { | |
8636 | case INTERFACE_NAMELESS: | |
94fa7146 | 8637 | case INTERFACE_ABSTRACT: |
4ee9c684 | 8638 | goto syntax; |
8639 | ||
8640 | case INTERFACE_GENERIC: | |
9f732c4e | 8641 | case INTERFACE_DTIO: |
2f78ea2e | 8642 | |
4ee9c684 | 8643 | if (gfc_get_symbol (name, NULL, &sym)) |
8644 | goto done; | |
8645 | ||
7966c683 | 8646 | if (type == INTERFACE_DTIO |
8647 | && gfc_current_ns->proc_name | |
8648 | && gfc_current_ns->proc_name->attr.flavor == FL_MODULE | |
8649 | && sym->attr.flavor == FL_UNKNOWN) | |
8650 | sym->attr.flavor = FL_PROCEDURE; | |
8651 | ||
76e207a9 | 8652 | if (!gfc_add_access (&sym->attr, |
8653 | (st == ST_PUBLIC) | |
8654 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
60e19868 | 8655 | sym->name, NULL)) |
4ee9c684 | 8656 | return MATCH_ERROR; |
8657 | ||
c2958b6b | 8658 | if (sym->attr.generic && (dt_sym = gfc_find_dt_in_generic (sym)) |
76e207a9 | 8659 | && !gfc_add_access (&dt_sym->attr, |
8660 | (st == ST_PUBLIC) | |
8661 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
60e19868 | 8662 | sym->name, NULL)) |
c2958b6b | 8663 | return MATCH_ERROR; |
8664 | ||
4ee9c684 | 8665 | break; |
8666 | ||
8667 | case INTERFACE_INTRINSIC_OP: | |
dcb1b019 | 8668 | if (gfc_current_ns->operator_access[op] == ACCESS_UNKNOWN) |
4ee9c684 | 8669 | { |
0c482c1d | 8670 | gfc_intrinsic_op other_op; |
8671 | ||
dcb1b019 | 8672 | gfc_current_ns->operator_access[op] = |
4ee9c684 | 8673 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; |
0c482c1d | 8674 | |
8675 | /* Handle the case if there is another op with the same | |
8676 | function, for INTRINSIC_EQ vs. INTRINSIC_EQ_OS and so on. */ | |
8677 | other_op = gfc_equivalent_op (op); | |
8678 | ||
8679 | if (other_op != INTRINSIC_NONE) | |
8680 | gfc_current_ns->operator_access[other_op] = | |
8681 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
8682 | ||
4ee9c684 | 8683 | } |
8684 | else | |
8685 | { | |
8686 | gfc_error ("Access specification of the %s operator at %C has " | |
dcb1b019 | 8687 | "already been specified", gfc_op2string (op)); |
4ee9c684 | 8688 | goto done; |
8689 | } | |
8690 | ||
8691 | break; | |
8692 | ||
8693 | case INTERFACE_USER_OP: | |
8694 | uop = gfc_get_uop (name); | |
8695 | ||
8696 | if (uop->access == ACCESS_UNKNOWN) | |
8697 | { | |
1a9745d2 | 8698 | uop->access = (st == ST_PUBLIC) |
8699 | ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
4ee9c684 | 8700 | } |
8701 | else | |
8702 | { | |
1a9745d2 | 8703 | gfc_error ("Access specification of the .%s. operator at %C " |
8704 | "has already been specified", sym->name); | |
4ee9c684 | 8705 | goto done; |
8706 | } | |
8707 | ||
8708 | break; | |
8709 | } | |
8710 | ||
8711 | if (gfc_match_char (',') == MATCH_NO) | |
8712 | break; | |
8713 | } | |
8714 | ||
8715 | if (gfc_match_eos () != MATCH_YES) | |
8716 | goto syntax; | |
8717 | return MATCH_YES; | |
8718 | ||
8719 | syntax: | |
8720 | gfc_syntax_error (st); | |
8721 | ||
8722 | done: | |
8723 | return MATCH_ERROR; | |
8724 | } | |
8725 | ||
8726 | ||
3ea52af3 | 8727 | match |
8728 | gfc_match_protected (void) | |
8729 | { | |
8730 | gfc_symbol *sym; | |
8731 | match m; | |
8732 | ||
54c0257b | 8733 | if (!gfc_current_ns->proc_name |
8734 | || gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
3ea52af3 | 8735 | { |
8736 | gfc_error ("PROTECTED at %C only allowed in specification " | |
8737 | "part of a module"); | |
8738 | return MATCH_ERROR; | |
8739 | ||
8740 | } | |
8741 | ||
60e19868 | 8742 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED statement at %C")) |
3ea52af3 | 8743 | return MATCH_ERROR; |
8744 | ||
8745 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8746 | { | |
8747 | return MATCH_ERROR; | |
8748 | } | |
8749 | ||
8750 | if (gfc_match_eos () == MATCH_YES) | |
8751 | goto syntax; | |
8752 | ||
8753 | for(;;) | |
8754 | { | |
8755 | m = gfc_match_symbol (&sym, 0); | |
8756 | switch (m) | |
8757 | { | |
8758 | case MATCH_YES: | |
60e19868 | 8759 | if (!gfc_add_protected (&sym->attr, sym->name, &gfc_current_locus)) |
3ea52af3 | 8760 | return MATCH_ERROR; |
8761 | goto next_item; | |
8762 | ||
8763 | case MATCH_NO: | |
8764 | break; | |
8765 | ||
8766 | case MATCH_ERROR: | |
8767 | return MATCH_ERROR; | |
8768 | } | |
8769 | ||
8770 | next_item: | |
8771 | if (gfc_match_eos () == MATCH_YES) | |
8772 | break; | |
8773 | if (gfc_match_char (',') != MATCH_YES) | |
8774 | goto syntax; | |
8775 | } | |
8776 | ||
8777 | return MATCH_YES; | |
8778 | ||
8779 | syntax: | |
8780 | gfc_error ("Syntax error in PROTECTED statement at %C"); | |
8781 | return MATCH_ERROR; | |
8782 | } | |
8783 | ||
8784 | ||
a0527218 | 8785 | /* The PRIVATE statement is a bit weird in that it can be an attribute |
69b1505f | 8786 | declaration, but also works as a standalone statement inside of a |
4ee9c684 | 8787 | type declaration or a module. */ |
8788 | ||
8789 | match | |
1a9745d2 | 8790 | gfc_match_private (gfc_statement *st) |
4ee9c684 | 8791 | { |
8792 | ||
8793 | if (gfc_match ("private") != MATCH_YES) | |
8794 | return MATCH_NO; | |
8795 | ||
e14bee04 | 8796 | if (gfc_current_state () != COMP_MODULE |
7fd88f6e | 8797 | && !(gfc_current_state () == COMP_DERIVED |
8798 | && gfc_state_stack->previous | |
8799 | && gfc_state_stack->previous->state == COMP_MODULE) | |
8800 | && !(gfc_current_state () == COMP_DERIVED_CONTAINS | |
8801 | && gfc_state_stack->previous && gfc_state_stack->previous->previous | |
8802 | && gfc_state_stack->previous->previous->state == COMP_MODULE)) | |
e14bee04 | 8803 | { |
8804 | gfc_error ("PRIVATE statement at %C is only allowed in the " | |
8805 | "specification part of a module"); | |
8806 | return MATCH_ERROR; | |
8807 | } | |
8808 | ||
4ee9c684 | 8809 | if (gfc_current_state () == COMP_DERIVED) |
8810 | { | |
8811 | if (gfc_match_eos () == MATCH_YES) | |
8812 | { | |
8813 | *st = ST_PRIVATE; | |
8814 | return MATCH_YES; | |
8815 | } | |
8816 | ||
8817 | gfc_syntax_error (ST_PRIVATE); | |
8818 | return MATCH_ERROR; | |
8819 | } | |
8820 | ||
8821 | if (gfc_match_eos () == MATCH_YES) | |
8822 | { | |
8823 | *st = ST_PRIVATE; | |
8824 | return MATCH_YES; | |
8825 | } | |
8826 | ||
8827 | *st = ST_ATTR_DECL; | |
8828 | return access_attr_decl (ST_PRIVATE); | |
8829 | } | |
8830 | ||
8831 | ||
8832 | match | |
1a9745d2 | 8833 | gfc_match_public (gfc_statement *st) |
4ee9c684 | 8834 | { |
8835 | ||
8836 | if (gfc_match ("public") != MATCH_YES) | |
8837 | return MATCH_NO; | |
8838 | ||
e14bee04 | 8839 | if (gfc_current_state () != COMP_MODULE) |
8840 | { | |
8841 | gfc_error ("PUBLIC statement at %C is only allowed in the " | |
8842 | "specification part of a module"); | |
8843 | return MATCH_ERROR; | |
8844 | } | |
8845 | ||
4ee9c684 | 8846 | if (gfc_match_eos () == MATCH_YES) |
8847 | { | |
8848 | *st = ST_PUBLIC; | |
8849 | return MATCH_YES; | |
8850 | } | |
8851 | ||
8852 | *st = ST_ATTR_DECL; | |
8853 | return access_attr_decl (ST_PUBLIC); | |
8854 | } | |
8855 | ||
8856 | ||
8857 | /* Workhorse for gfc_match_parameter. */ | |
8858 | ||
8859 | static match | |
8860 | do_parm (void) | |
8861 | { | |
8862 | gfc_symbol *sym; | |
8863 | gfc_expr *init; | |
8864 | match m; | |
60e19868 | 8865 | bool t; |
4ee9c684 | 8866 | |
8867 | m = gfc_match_symbol (&sym, 0); | |
8868 | if (m == MATCH_NO) | |
8869 | gfc_error ("Expected variable name at %C in PARAMETER statement"); | |
8870 | ||
8871 | if (m != MATCH_YES) | |
8872 | return m; | |
8873 | ||
8874 | if (gfc_match_char ('=') == MATCH_NO) | |
8875 | { | |
8876 | gfc_error ("Expected = sign in PARAMETER statement at %C"); | |
8877 | return MATCH_ERROR; | |
8878 | } | |
8879 | ||
8880 | m = gfc_match_init_expr (&init); | |
8881 | if (m == MATCH_NO) | |
8882 | gfc_error ("Expected expression at %C in PARAMETER statement"); | |
8883 | if (m != MATCH_YES) | |
8884 | return m; | |
8885 | ||
8886 | if (sym->ts.type == BT_UNKNOWN | |
60e19868 | 8887 | && !gfc_set_default_type (sym, 1, NULL)) |
4ee9c684 | 8888 | { |
8889 | m = MATCH_ERROR; | |
8890 | goto cleanup; | |
8891 | } | |
8892 | ||
60e19868 | 8893 | if (!gfc_check_assign_symbol (sym, NULL, init) |
8894 | || !gfc_add_flavor (&sym->attr, FL_PARAMETER, sym->name, NULL)) | |
4ee9c684 | 8895 | { |
8896 | m = MATCH_ERROR; | |
8897 | goto cleanup; | |
8898 | } | |
8899 | ||
13aebeb0 | 8900 | if (sym->value) |
8901 | { | |
8902 | gfc_error ("Initializing already initialized variable at %C"); | |
8903 | m = MATCH_ERROR; | |
8904 | goto cleanup; | |
8905 | } | |
8906 | ||
f16404e3 | 8907 | t = add_init_expr_to_sym (sym->name, &init, &gfc_current_locus); |
60e19868 | 8908 | return (t) ? MATCH_YES : MATCH_ERROR; |
4ee9c684 | 8909 | |
8910 | cleanup: | |
8911 | gfc_free_expr (init); | |
8912 | return m; | |
8913 | } | |
8914 | ||
8915 | ||
8916 | /* Match a parameter statement, with the weird syntax that these have. */ | |
8917 | ||
8918 | match | |
8919 | gfc_match_parameter (void) | |
8920 | { | |
2c628787 | 8921 | const char *term = " )%t"; |
4ee9c684 | 8922 | match m; |
8923 | ||
8924 | if (gfc_match_char ('(') == MATCH_NO) | |
2c628787 | 8925 | { |
8926 | /* With legacy PARAMETER statements, don't expect a terminating ')'. */ | |
8927 | if (!gfc_notify_std (GFC_STD_LEGACY, "PARAMETER without '()' at %C")) | |
8928 | return MATCH_NO; | |
8929 | term = " %t"; | |
8930 | } | |
4ee9c684 | 8931 | |
8932 | for (;;) | |
8933 | { | |
8934 | m = do_parm (); | |
8935 | if (m != MATCH_YES) | |
8936 | break; | |
8937 | ||
2c628787 | 8938 | if (gfc_match (term) == MATCH_YES) |
4ee9c684 | 8939 | break; |
8940 | ||
8941 | if (gfc_match_char (',') != MATCH_YES) | |
8942 | { | |
8943 | gfc_error ("Unexpected characters in PARAMETER statement at %C"); | |
8944 | m = MATCH_ERROR; | |
8945 | break; | |
8946 | } | |
8947 | } | |
8948 | ||
8949 | return m; | |
8950 | } | |
8951 | ||
8952 | ||
8e652fcf | 8953 | match |
8954 | gfc_match_automatic (void) | |
8955 | { | |
8956 | gfc_symbol *sym; | |
8957 | match m; | |
8958 | bool seen_symbol = false; | |
8959 | ||
8960 | if (!flag_dec_static) | |
8961 | { | |
841da9cf | 8962 | gfc_error ("%s at %C is a DEC extension, enable with " |
8963 | "%<-fdec-static%>", | |
8964 | "AUTOMATIC" | |
8965 | ); | |
8e652fcf | 8966 | return MATCH_ERROR; |
8967 | } | |
8968 | ||
8969 | gfc_match (" ::"); | |
8970 | ||
8971 | for (;;) | |
8972 | { | |
8973 | m = gfc_match_symbol (&sym, 0); | |
8974 | switch (m) | |
8975 | { | |
8976 | case MATCH_NO: | |
8977 | break; | |
8978 | ||
8979 | case MATCH_ERROR: | |
8980 | return MATCH_ERROR; | |
8981 | ||
8982 | case MATCH_YES: | |
8983 | if (!gfc_add_automatic (&sym->attr, sym->name, &gfc_current_locus)) | |
8984 | return MATCH_ERROR; | |
8985 | seen_symbol = true; | |
8986 | break; | |
8987 | } | |
8988 | ||
8989 | if (gfc_match_eos () == MATCH_YES) | |
8990 | break; | |
8991 | if (gfc_match_char (',') != MATCH_YES) | |
8992 | goto syntax; | |
8993 | } | |
8994 | ||
8995 | if (!seen_symbol) | |
8996 | { | |
8997 | gfc_error ("Expected entity-list in AUTOMATIC statement at %C"); | |
8998 | return MATCH_ERROR; | |
8999 | } | |
9000 | ||
9001 | return MATCH_YES; | |
9002 | ||
9003 | syntax: | |
9004 | gfc_error ("Syntax error in AUTOMATIC statement at %C"); | |
9005 | return MATCH_ERROR; | |
9006 | } | |
9007 | ||
9008 | ||
9009 | match | |
9010 | gfc_match_static (void) | |
9011 | { | |
9012 | gfc_symbol *sym; | |
9013 | match m; | |
9014 | bool seen_symbol = false; | |
9015 | ||
9016 | if (!flag_dec_static) | |
9017 | { | |
841da9cf | 9018 | gfc_error ("%s at %C is a DEC extension, enable with " |
9019 | "%<-fdec-static%>", | |
9020 | "STATIC"); | |
8e652fcf | 9021 | return MATCH_ERROR; |
9022 | } | |
9023 | ||
9024 | gfc_match (" ::"); | |
9025 | ||
9026 | for (;;) | |
9027 | { | |
9028 | m = gfc_match_symbol (&sym, 0); | |
9029 | switch (m) | |
9030 | { | |
9031 | case MATCH_NO: | |
9032 | break; | |
9033 | ||
9034 | case MATCH_ERROR: | |
9035 | return MATCH_ERROR; | |
9036 | ||
9037 | case MATCH_YES: | |
9038 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, | |
9039 | &gfc_current_locus)) | |
9040 | return MATCH_ERROR; | |
9041 | seen_symbol = true; | |
9042 | break; | |
9043 | } | |
9044 | ||
9045 | if (gfc_match_eos () == MATCH_YES) | |
9046 | break; | |
9047 | if (gfc_match_char (',') != MATCH_YES) | |
9048 | goto syntax; | |
9049 | } | |
9050 | ||
9051 | if (!seen_symbol) | |
9052 | { | |
9053 | gfc_error ("Expected entity-list in STATIC statement at %C"); | |
9054 | return MATCH_ERROR; | |
9055 | } | |
9056 | ||
9057 | return MATCH_YES; | |
9058 | ||
9059 | syntax: | |
9060 | gfc_error ("Syntax error in STATIC statement at %C"); | |
9061 | return MATCH_ERROR; | |
9062 | } | |
9063 | ||
9064 | ||
4ee9c684 | 9065 | /* Save statements have a special syntax. */ |
9066 | ||
9067 | match | |
9068 | gfc_match_save (void) | |
9069 | { | |
82f5ee13 | 9070 | char n[GFC_MAX_SYMBOL_LEN+1]; |
9071 | gfc_common_head *c; | |
4ee9c684 | 9072 | gfc_symbol *sym; |
9073 | match m; | |
9074 | ||
9075 | if (gfc_match_eos () == MATCH_YES) | |
9076 | { | |
9077 | if (gfc_current_ns->seen_save) | |
9078 | { | |
60e19868 | 9079 | if (!gfc_notify_std (GFC_STD_LEGACY, "Blanket SAVE statement at %C " |
9080 | "follows previous SAVE statement")) | |
76e82f95 | 9081 | return MATCH_ERROR; |
4ee9c684 | 9082 | } |
9083 | ||
9084 | gfc_current_ns->save_all = gfc_current_ns->seen_save = 1; | |
9085 | return MATCH_YES; | |
9086 | } | |
9087 | ||
9088 | if (gfc_current_ns->save_all) | |
9089 | { | |
60e19868 | 9090 | if (!gfc_notify_std (GFC_STD_LEGACY, "SAVE statement at %C follows " |
9091 | "blanket SAVE statement")) | |
76e82f95 | 9092 | return MATCH_ERROR; |
4ee9c684 | 9093 | } |
9094 | ||
9095 | gfc_match (" ::"); | |
9096 | ||
9097 | for (;;) | |
9098 | { | |
9099 | m = gfc_match_symbol (&sym, 0); | |
9100 | switch (m) | |
9101 | { | |
9102 | case MATCH_YES: | |
76e207a9 | 9103 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, |
60e19868 | 9104 | &gfc_current_locus)) |
4ee9c684 | 9105 | return MATCH_ERROR; |
9106 | goto next_item; | |
9107 | ||
9108 | case MATCH_NO: | |
9109 | break; | |
9110 | ||
9111 | case MATCH_ERROR: | |
9112 | return MATCH_ERROR; | |
9113 | } | |
9114 | ||
82f5ee13 | 9115 | m = gfc_match (" / %n /", &n); |
4ee9c684 | 9116 | if (m == MATCH_ERROR) |
9117 | return MATCH_ERROR; | |
9118 | if (m == MATCH_NO) | |
9119 | goto syntax; | |
9120 | ||
403ddc45 | 9121 | c = gfc_get_common (n, 0); |
82f5ee13 | 9122 | c->saved = 1; |
9123 | ||
4ee9c684 | 9124 | gfc_current_ns->seen_save = 1; |
9125 | ||
9126 | next_item: | |
9127 | if (gfc_match_eos () == MATCH_YES) | |
9128 | break; | |
9129 | if (gfc_match_char (',') != MATCH_YES) | |
9130 | goto syntax; | |
9131 | } | |
9132 | ||
9133 | return MATCH_YES; | |
9134 | ||
9135 | syntax: | |
9136 | gfc_error ("Syntax error in SAVE statement at %C"); | |
9137 | return MATCH_ERROR; | |
9138 | } | |
9139 | ||
9140 | ||
8f6339b6 | 9141 | match |
9142 | gfc_match_value (void) | |
9143 | { | |
9144 | gfc_symbol *sym; | |
9145 | match m; | |
9146 | ||
6a7084d7 | 9147 | /* This is not allowed within a BLOCK construct! */ |
9148 | if (gfc_current_state () == COMP_BLOCK) | |
9149 | { | |
9150 | gfc_error ("VALUE is not allowed inside of BLOCK at %C"); | |
9151 | return MATCH_ERROR; | |
9152 | } | |
9153 | ||
60e19868 | 9154 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE statement at %C")) |
8f6339b6 | 9155 | return MATCH_ERROR; |
9156 | ||
9157 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9158 | { | |
9159 | return MATCH_ERROR; | |
9160 | } | |
9161 | ||
9162 | if (gfc_match_eos () == MATCH_YES) | |
9163 | goto syntax; | |
9164 | ||
9165 | for(;;) | |
9166 | { | |
9167 | m = gfc_match_symbol (&sym, 0); | |
9168 | switch (m) | |
9169 | { | |
9170 | case MATCH_YES: | |
60e19868 | 9171 | if (!gfc_add_value (&sym->attr, sym->name, &gfc_current_locus)) |
8f6339b6 | 9172 | return MATCH_ERROR; |
9173 | goto next_item; | |
9174 | ||
9175 | case MATCH_NO: | |
9176 | break; | |
9177 | ||
9178 | case MATCH_ERROR: | |
9179 | return MATCH_ERROR; | |
9180 | } | |
9181 | ||
9182 | next_item: | |
9183 | if (gfc_match_eos () == MATCH_YES) | |
9184 | break; | |
9185 | if (gfc_match_char (',') != MATCH_YES) | |
9186 | goto syntax; | |
9187 | } | |
9188 | ||
9189 | return MATCH_YES; | |
9190 | ||
9191 | syntax: | |
9192 | gfc_error ("Syntax error in VALUE statement at %C"); | |
9193 | return MATCH_ERROR; | |
9194 | } | |
9195 | ||
f6d0e37a | 9196 | |
ef814c81 | 9197 | match |
9198 | gfc_match_volatile (void) | |
9199 | { | |
9200 | gfc_symbol *sym; | |
2c6ca8fc | 9201 | char *name; |
ef814c81 | 9202 | match m; |
9203 | ||
60e19868 | 9204 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE statement at %C")) |
ef814c81 | 9205 | return MATCH_ERROR; |
9206 | ||
9207 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9208 | { | |
9209 | return MATCH_ERROR; | |
9210 | } | |
9211 | ||
9212 | if (gfc_match_eos () == MATCH_YES) | |
9213 | goto syntax; | |
9214 | ||
9215 | for(;;) | |
9216 | { | |
8db94b3b | 9217 | /* VOLATILE is special because it can be added to host-associated |
293d72e0 | 9218 | symbols locally. Except for coarrays. */ |
2f241857 | 9219 | m = gfc_match_symbol (&sym, 1); |
ef814c81 | 9220 | switch (m) |
9221 | { | |
9222 | case MATCH_YES: | |
2c6ca8fc | 9223 | name = XCNEWVAR (char, strlen (sym->name) + 1); |
9224 | strcpy (name, sym->name); | |
9225 | if (!check_function_name (name)) | |
9226 | return MATCH_ERROR; | |
aff518b0 | 9227 | /* F2008, C560+C561. VOLATILE for host-/use-associated variable or |
9228 | for variable in a BLOCK which is defined outside of the BLOCK. */ | |
9229 | if (sym->ns != gfc_current_ns && sym->attr.codimension) | |
9230 | { | |
716da296 | 9231 | gfc_error ("Specifying VOLATILE for coarray variable %qs at " |
aff518b0 | 9232 | "%C, which is use-/host-associated", sym->name); |
9233 | return MATCH_ERROR; | |
9234 | } | |
60e19868 | 9235 | if (!gfc_add_volatile (&sym->attr, sym->name, &gfc_current_locus)) |
ef814c81 | 9236 | return MATCH_ERROR; |
9237 | goto next_item; | |
9238 | ||
9239 | case MATCH_NO: | |
9240 | break; | |
9241 | ||
9242 | case MATCH_ERROR: | |
9243 | return MATCH_ERROR; | |
9244 | } | |
9245 | ||
9246 | next_item: | |
9247 | if (gfc_match_eos () == MATCH_YES) | |
9248 | break; | |
9249 | if (gfc_match_char (',') != MATCH_YES) | |
9250 | goto syntax; | |
9251 | } | |
9252 | ||
9253 | return MATCH_YES; | |
9254 | ||
9255 | syntax: | |
9256 | gfc_error ("Syntax error in VOLATILE statement at %C"); | |
9257 | return MATCH_ERROR; | |
9258 | } | |
9259 | ||
9260 | ||
738928be | 9261 | match |
9262 | gfc_match_asynchronous (void) | |
9263 | { | |
9264 | gfc_symbol *sym; | |
2c6ca8fc | 9265 | char *name; |
738928be | 9266 | match m; |
9267 | ||
60e19868 | 9268 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS statement at %C")) |
738928be | 9269 | return MATCH_ERROR; |
9270 | ||
9271 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9272 | { | |
9273 | return MATCH_ERROR; | |
9274 | } | |
9275 | ||
9276 | if (gfc_match_eos () == MATCH_YES) | |
9277 | goto syntax; | |
9278 | ||
9279 | for(;;) | |
9280 | { | |
8db94b3b | 9281 | /* ASYNCHRONOUS is special because it can be added to host-associated |
738928be | 9282 | symbols locally. */ |
9283 | m = gfc_match_symbol (&sym, 1); | |
9284 | switch (m) | |
9285 | { | |
9286 | case MATCH_YES: | |
2c6ca8fc | 9287 | name = XCNEWVAR (char, strlen (sym->name) + 1); |
9288 | strcpy (name, sym->name); | |
9289 | if (!check_function_name (name)) | |
9290 | return MATCH_ERROR; | |
60e19868 | 9291 | if (!gfc_add_asynchronous (&sym->attr, sym->name, &gfc_current_locus)) |
738928be | 9292 | return MATCH_ERROR; |
9293 | goto next_item; | |
9294 | ||
9295 | case MATCH_NO: | |
9296 | break; | |
9297 | ||
9298 | case MATCH_ERROR: | |
9299 | return MATCH_ERROR; | |
9300 | } | |
9301 | ||
9302 | next_item: | |
9303 | if (gfc_match_eos () == MATCH_YES) | |
9304 | break; | |
9305 | if (gfc_match_char (',') != MATCH_YES) | |
9306 | goto syntax; | |
9307 | } | |
9308 | ||
9309 | return MATCH_YES; | |
9310 | ||
9311 | syntax: | |
9312 | gfc_error ("Syntax error in ASYNCHRONOUS statement at %C"); | |
9313 | return MATCH_ERROR; | |
9314 | } | |
9315 | ||
9316 | ||
4b8eb6ca | 9317 | /* Match a module procedure statement in a submodule. */ |
9318 | ||
9319 | match | |
9320 | gfc_match_submod_proc (void) | |
9321 | { | |
9322 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9323 | gfc_symbol *sym, *fsym; | |
9324 | match m; | |
9325 | gfc_formal_arglist *formal, *head, *tail; | |
9326 | ||
9327 | if (gfc_current_state () != COMP_CONTAINS | |
9328 | || !(gfc_state_stack->previous | |
76e207a9 | 9329 | && (gfc_state_stack->previous->state == COMP_SUBMODULE |
9330 | || gfc_state_stack->previous->state == COMP_MODULE))) | |
4b8eb6ca | 9331 | return MATCH_NO; |
9332 | ||
9333 | m = gfc_match (" module% procedure% %n", name); | |
9334 | if (m != MATCH_YES) | |
9335 | return m; | |
9336 | ||
9337 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE PROCEDURE declaration " | |
9338 | "at %C")) | |
9339 | return MATCH_ERROR; | |
9340 | ||
9341 | if (get_proc_name (name, &sym, false)) | |
9342 | return MATCH_ERROR; | |
9343 | ||
9344 | /* Make sure that the result field is appropriately filled, even though | |
9345 | the result symbol will be replaced later on. */ | |
dee7f6d1 | 9346 | if (sym->tlink && sym->tlink->attr.function) |
4b8eb6ca | 9347 | { |
dee7f6d1 | 9348 | if (sym->tlink->result |
9349 | && sym->tlink->result != sym->tlink) | |
9350 | sym->result= sym->tlink->result; | |
4b8eb6ca | 9351 | else |
9352 | sym->result = sym; | |
9353 | } | |
9354 | ||
9355 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if | |
9356 | the symbol existed before. */ | |
9357 | sym->declared_at = gfc_current_locus; | |
9358 | ||
9359 | if (!sym->attr.module_procedure) | |
9360 | return MATCH_ERROR; | |
9361 | ||
9362 | /* Signal match_end to expect "end procedure". */ | |
9363 | sym->abr_modproc_decl = 1; | |
9364 | ||
9365 | /* Change from IFSRC_IFBODY coming from the interface declaration. */ | |
9366 | sym->attr.if_source = IFSRC_DECL; | |
9367 | ||
9368 | gfc_new_block = sym; | |
9369 | ||
9370 | /* Make a new formal arglist with the symbols in the procedure | |
9371 | namespace. */ | |
9372 | head = tail = NULL; | |
9373 | for (formal = sym->formal; formal && formal->sym; formal = formal->next) | |
9374 | { | |
9375 | if (formal == sym->formal) | |
9376 | head = tail = gfc_get_formal_arglist (); | |
9377 | else | |
9378 | { | |
9379 | tail->next = gfc_get_formal_arglist (); | |
9380 | tail = tail->next; | |
9381 | } | |
9382 | ||
9383 | if (gfc_copy_dummy_sym (&fsym, formal->sym, 0)) | |
9384 | goto cleanup; | |
9385 | ||
9386 | tail->sym = fsym; | |
9387 | gfc_set_sym_referenced (fsym); | |
9388 | } | |
9389 | ||
9390 | /* The dummy symbols get cleaned up, when the formal_namespace of the | |
9391 | interface declaration is cleared. This allows us to add the | |
9392 | explicit interface as is done for other type of procedure. */ | |
9393 | if (!gfc_add_explicit_interface (sym, IFSRC_DECL, head, | |
9394 | &gfc_current_locus)) | |
9395 | return MATCH_ERROR; | |
9396 | ||
9397 | if (gfc_match_eos () != MATCH_YES) | |
9398 | { | |
9399 | gfc_syntax_error (ST_MODULE_PROC); | |
9400 | return MATCH_ERROR; | |
9401 | } | |
9402 | ||
9403 | return MATCH_YES; | |
9404 | ||
9405 | cleanup: | |
9406 | gfc_free_formal_arglist (head); | |
9407 | return MATCH_ERROR; | |
9408 | } | |
9409 | ||
9410 | ||
4ee9c684 | 9411 | /* Match a module procedure statement. Note that we have to modify |
9412 | symbols in the parent's namespace because the current one was there | |
89d91d02 | 9413 | to receive symbols that are in an interface's formal argument list. */ |
4ee9c684 | 9414 | |
9415 | match | |
9416 | gfc_match_modproc (void) | |
9417 | { | |
9418 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9419 | gfc_symbol *sym; | |
9420 | match m; | |
d920fb76 | 9421 | locus old_locus; |
63d42079 | 9422 | gfc_namespace *module_ns; |
94ce9f74 | 9423 | gfc_interface *old_interface_head, *interface; |
4ee9c684 | 9424 | |
9425 | if (gfc_state_stack->state != COMP_INTERFACE | |
9426 | || gfc_state_stack->previous == NULL | |
5cf92482 | 9427 | || current_interface.type == INTERFACE_NAMELESS |
9428 | || current_interface.type == INTERFACE_ABSTRACT) | |
4ee9c684 | 9429 | { |
1a9745d2 | 9430 | gfc_error ("MODULE PROCEDURE at %C must be in a generic module " |
9431 | "interface"); | |
4ee9c684 | 9432 | return MATCH_ERROR; |
9433 | } | |
9434 | ||
63d42079 | 9435 | module_ns = gfc_current_ns->parent; |
9436 | for (; module_ns; module_ns = module_ns->parent) | |
15ca3865 | 9437 | if (module_ns->proc_name->attr.flavor == FL_MODULE |
9438 | || module_ns->proc_name->attr.flavor == FL_PROGRAM | |
9439 | || (module_ns->proc_name->attr.flavor == FL_PROCEDURE | |
9440 | && !module_ns->proc_name->attr.contained)) | |
63d42079 | 9441 | break; |
9442 | ||
9443 | if (module_ns == NULL) | |
9444 | return MATCH_ERROR; | |
9445 | ||
94ce9f74 | 9446 | /* Store the current state of the interface. We will need it if we |
9447 | end up with a syntax error and need to recover. */ | |
9448 | old_interface_head = gfc_current_interface_head (); | |
9449 | ||
d920fb76 | 9450 | /* Check if the F2008 optional double colon appears. */ |
9451 | gfc_gobble_whitespace (); | |
9452 | old_locus = gfc_current_locus; | |
9453 | if (gfc_match ("::") == MATCH_YES) | |
9454 | { | |
60e19868 | 9455 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
9456 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
d920fb76 | 9457 | return MATCH_ERROR; |
9458 | } | |
9459 | else | |
9460 | gfc_current_locus = old_locus; | |
8db94b3b | 9461 | |
4ee9c684 | 9462 | for (;;) |
9463 | { | |
94ce9f74 | 9464 | bool last = false; |
d920fb76 | 9465 | old_locus = gfc_current_locus; |
94ce9f74 | 9466 | |
4ee9c684 | 9467 | m = gfc_match_name (name); |
9468 | if (m == MATCH_NO) | |
9469 | goto syntax; | |
9470 | if (m != MATCH_YES) | |
9471 | return MATCH_ERROR; | |
9472 | ||
94ce9f74 | 9473 | /* Check for syntax error before starting to add symbols to the |
9474 | current namespace. */ | |
9475 | if (gfc_match_eos () == MATCH_YES) | |
9476 | last = true; | |
d920fb76 | 9477 | |
94ce9f74 | 9478 | if (!last && gfc_match_char (',') != MATCH_YES) |
9479 | goto syntax; | |
9480 | ||
9481 | /* Now we're sure the syntax is valid, we process this item | |
9482 | further. */ | |
63d42079 | 9483 | if (gfc_get_symbol (name, module_ns, &sym)) |
4ee9c684 | 9484 | return MATCH_ERROR; |
9485 | ||
15ca3865 | 9486 | if (sym->attr.intrinsic) |
9487 | { | |
9488 | gfc_error ("Intrinsic procedure at %L cannot be a MODULE " | |
9489 | "PROCEDURE", &old_locus); | |
9490 | return MATCH_ERROR; | |
9491 | } | |
9492 | ||
4ee9c684 | 9493 | if (sym->attr.proc != PROC_MODULE |
60e19868 | 9494 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
4ee9c684 | 9495 | return MATCH_ERROR; |
9496 | ||
60e19868 | 9497 | if (!gfc_add_interface (sym)) |
4ee9c684 | 9498 | return MATCH_ERROR; |
9499 | ||
3186f695 | 9500 | sym->attr.mod_proc = 1; |
15ca3865 | 9501 | sym->declared_at = old_locus; |
3186f695 | 9502 | |
94ce9f74 | 9503 | if (last) |
4ee9c684 | 9504 | break; |
4ee9c684 | 9505 | } |
9506 | ||
9507 | return MATCH_YES; | |
9508 | ||
9509 | syntax: | |
94ce9f74 | 9510 | /* Restore the previous state of the interface. */ |
9511 | interface = gfc_current_interface_head (); | |
9512 | gfc_set_current_interface_head (old_interface_head); | |
9513 | ||
9514 | /* Free the new interfaces. */ | |
9515 | while (interface != old_interface_head) | |
9516 | { | |
9517 | gfc_interface *i = interface->next; | |
434f0922 | 9518 | free (interface); |
94ce9f74 | 9519 | interface = i; |
9520 | } | |
9521 | ||
9522 | /* And issue a syntax error. */ | |
4ee9c684 | 9523 | gfc_syntax_error (ST_MODULE_PROC); |
9524 | return MATCH_ERROR; | |
9525 | } | |
9526 | ||
9527 | ||
ea94d76d | 9528 | /* Check a derived type that is being extended. */ |
7a99bc9b | 9529 | |
ea94d76d | 9530 | static gfc_symbol* |
9531 | check_extended_derived_type (char *name) | |
9532 | { | |
9533 | gfc_symbol *extended; | |
9534 | ||
9535 | if (gfc_find_symbol (name, gfc_current_ns, 1, &extended)) | |
9536 | { | |
9537 | gfc_error ("Ambiguous symbol in TYPE definition at %C"); | |
9538 | return NULL; | |
9539 | } | |
9540 | ||
7a99bc9b | 9541 | extended = gfc_find_dt_in_generic (extended); |
9542 | ||
9543 | /* F08:C428. */ | |
ea94d76d | 9544 | if (!extended) |
9545 | { | |
716da296 | 9546 | gfc_error ("Symbol %qs at %C has not been previously defined", name); |
ea94d76d | 9547 | return NULL; |
9548 | } | |
9549 | ||
9550 | if (extended->attr.flavor != FL_DERIVED) | |
9551 | { | |
716da296 | 9552 | gfc_error ("%qs in EXTENDS expression at %C is not a " |
ea94d76d | 9553 | "derived type", name); |
9554 | return NULL; | |
9555 | } | |
9556 | ||
9557 | if (extended->attr.is_bind_c) | |
9558 | { | |
716da296 | 9559 | gfc_error ("%qs cannot be extended at %C because it " |
ea94d76d | 9560 | "is BIND(C)", extended->name); |
9561 | return NULL; | |
9562 | } | |
9563 | ||
9564 | if (extended->attr.sequence) | |
9565 | { | |
716da296 | 9566 | gfc_error ("%qs cannot be extended at %C because it " |
ea94d76d | 9567 | "is a SEQUENCE type", extended->name); |
9568 | return NULL; | |
9569 | } | |
9570 | ||
9571 | return extended; | |
9572 | } | |
9573 | ||
9574 | ||
c5d33754 | 9575 | /* Match the optional attribute specifiers for a type declaration. |
9576 | Return MATCH_ERROR if an error is encountered in one of the handled | |
9577 | attributes (public, private, bind(c)), MATCH_NO if what's found is | |
9578 | not a handled attribute, and MATCH_YES otherwise. TODO: More error | |
9579 | checking on attribute conflicts needs to be done. */ | |
4ee9c684 | 9580 | |
9581 | match | |
ea94d76d | 9582 | gfc_get_type_attr_spec (symbol_attribute *attr, char *name) |
4ee9c684 | 9583 | { |
c5d33754 | 9584 | /* See if the derived type is marked as private. */ |
4ee9c684 | 9585 | if (gfc_match (" , private") == MATCH_YES) |
9586 | { | |
e14bee04 | 9587 | if (gfc_current_state () != COMP_MODULE) |
4ee9c684 | 9588 | { |
e14bee04 | 9589 | gfc_error ("Derived type at %C can only be PRIVATE in the " |
9590 | "specification part of a module"); | |
4ee9c684 | 9591 | return MATCH_ERROR; |
9592 | } | |
9593 | ||
60e19868 | 9594 | if (!gfc_add_access (attr, ACCESS_PRIVATE, NULL, NULL)) |
4ee9c684 | 9595 | return MATCH_ERROR; |
4ee9c684 | 9596 | } |
c5d33754 | 9597 | else if (gfc_match (" , public") == MATCH_YES) |
4ee9c684 | 9598 | { |
e14bee04 | 9599 | if (gfc_current_state () != COMP_MODULE) |
4ee9c684 | 9600 | { |
e14bee04 | 9601 | gfc_error ("Derived type at %C can only be PUBLIC in the " |
9602 | "specification part of a module"); | |
4ee9c684 | 9603 | return MATCH_ERROR; |
9604 | } | |
9605 | ||
60e19868 | 9606 | if (!gfc_add_access (attr, ACCESS_PUBLIC, NULL, NULL)) |
4ee9c684 | 9607 | return MATCH_ERROR; |
4ee9c684 | 9608 | } |
ac5f2650 | 9609 | else if (gfc_match (" , bind ( c )") == MATCH_YES) |
c5d33754 | 9610 | { |
9611 | /* If the type is defined to be bind(c) it then needs to make | |
9612 | sure that all fields are interoperable. This will | |
9613 | need to be a semantic check on the finished derived type. | |
9614 | See 15.2.3 (lines 9-12) of F2003 draft. */ | |
60e19868 | 9615 | if (!gfc_add_is_bind_c (attr, NULL, &gfc_current_locus, 0)) |
c5d33754 | 9616 | return MATCH_ERROR; |
9617 | ||
9618 | /* TODO: attr conflicts need to be checked, probably in symbol.c. */ | |
9619 | } | |
ac5f2650 | 9620 | else if (gfc_match (" , abstract") == MATCH_YES) |
9621 | { | |
60e19868 | 9622 | if (!gfc_notify_std (GFC_STD_F2003, "ABSTRACT type at %C")) |
ac5f2650 | 9623 | return MATCH_ERROR; |
9624 | ||
60e19868 | 9625 | if (!gfc_add_abstract (attr, &gfc_current_locus)) |
ac5f2650 | 9626 | return MATCH_ERROR; |
9627 | } | |
60e19868 | 9628 | else if (name && gfc_match (" , extends ( %n )", name) == MATCH_YES) |
ea94d76d | 9629 | { |
60e19868 | 9630 | if (!gfc_add_extension (attr, &gfc_current_locus)) |
ea94d76d | 9631 | return MATCH_ERROR; |
9632 | } | |
c5d33754 | 9633 | else |
9634 | return MATCH_NO; | |
9635 | ||
9636 | /* If we get here, something matched. */ | |
9637 | return MATCH_YES; | |
9638 | } | |
9639 | ||
9640 | ||
d7cd448a | 9641 | /* Common function for type declaration blocks similar to derived types, such |
9642 | as STRUCTURES and MAPs. Unlike derived types, a structure type | |
9643 | does NOT have a generic symbol matching the name given by the user. | |
9644 | STRUCTUREs can share names with variables and PARAMETERs so we must allow | |
9645 | for the creation of an independent symbol. | |
7d7125df | 9646 | Other parameters are a message to prefix errors with, the name of the new |
d7cd448a | 9647 | type to be created, and the flavor to add to the resulting symbol. */ |
9648 | ||
9649 | static bool | |
9650 | get_struct_decl (const char *name, sym_flavor fl, locus *decl, | |
9651 | gfc_symbol **result) | |
9652 | { | |
9653 | gfc_symbol *sym; | |
9654 | locus where; | |
9655 | ||
9656 | gcc_assert (name[0] == (char) TOUPPER (name[0])); | |
9657 | ||
9658 | if (decl) | |
9659 | where = *decl; | |
9660 | else | |
9661 | where = gfc_current_locus; | |
9662 | ||
9663 | if (gfc_get_symbol (name, NULL, &sym)) | |
9664 | return false; | |
9665 | ||
9666 | if (!sym) | |
9667 | { | |
9668 | gfc_internal_error ("Failed to create structure type '%s' at %C", name); | |
9669 | return false; | |
9670 | } | |
9671 | ||
9672 | if (sym->components != NULL || sym->attr.zero_comp) | |
9673 | { | |
1b7008c4 | 9674 | gfc_error ("Type definition of %qs at %C was already defined at %L", |
d7cd448a | 9675 | sym->name, &sym->declared_at); |
9676 | return false; | |
9677 | } | |
9678 | ||
9679 | sym->declared_at = where; | |
9680 | ||
9681 | if (sym->attr.flavor != fl | |
9682 | && !gfc_add_flavor (&sym->attr, fl, sym->name, NULL)) | |
9683 | return false; | |
9684 | ||
9685 | if (!sym->hash_value) | |
9686 | /* Set the hash for the compound name for this type. */ | |
9687 | sym->hash_value = gfc_hash_value (sym); | |
9688 | ||
9689 | /* Normally the type is expected to have been completely parsed by the time | |
9690 | a field declaration with this type is seen. For unions, maps, and nested | |
9691 | structure declarations, we need to indicate that it is okay that we | |
9692 | haven't seen any components yet. This will be updated after the structure | |
9693 | is fully parsed. */ | |
9694 | sym->attr.zero_comp = 0; | |
9695 | ||
9696 | /* Structures always act like derived-types with the SEQUENCE attribute */ | |
9697 | gfc_add_sequence (&sym->attr, sym->name, NULL); | |
9698 | ||
9699 | if (result) *result = sym; | |
9700 | ||
9701 | return true; | |
9702 | } | |
9703 | ||
9704 | ||
9705 | /* Match the opening of a MAP block. Like a struct within a union in C; | |
9706 | behaves identical to STRUCTURE blocks. */ | |
9707 | ||
9708 | match | |
9709 | gfc_match_map (void) | |
9710 | { | |
ac1739da | 9711 | /* Counter used to give unique internal names to map structures. */ |
9712 | static unsigned int gfc_map_id = 0; | |
9713 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9714 | gfc_symbol *sym; | |
9715 | locus old_loc; | |
d7cd448a | 9716 | |
ac1739da | 9717 | old_loc = gfc_current_locus; |
d7cd448a | 9718 | |
ac1739da | 9719 | if (gfc_match_eos () != MATCH_YES) |
9720 | { | |
9721 | gfc_error ("Junk after MAP statement at %C"); | |
9722 | gfc_current_locus = old_loc; | |
9723 | return MATCH_ERROR; | |
9724 | } | |
d7cd448a | 9725 | |
ac1739da | 9726 | /* Map blocks are anonymous so we make up unique names for the symbol table |
9727 | which are invalid Fortran identifiers. */ | |
9728 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "MM$%u", gfc_map_id++); | |
d7cd448a | 9729 | |
ac1739da | 9730 | if (!get_struct_decl (name, FL_STRUCT, &old_loc, &sym)) |
9731 | return MATCH_ERROR; | |
d7cd448a | 9732 | |
ac1739da | 9733 | gfc_new_block = sym; |
d7cd448a | 9734 | |
ac1739da | 9735 | return MATCH_YES; |
d7cd448a | 9736 | } |
9737 | ||
9738 | ||
9739 | /* Match the opening of a UNION block. */ | |
9740 | ||
9741 | match | |
9742 | gfc_match_union (void) | |
9743 | { | |
ac1739da | 9744 | /* Counter used to give unique internal names to union types. */ |
9745 | static unsigned int gfc_union_id = 0; | |
9746 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9747 | gfc_symbol *sym; | |
9748 | locus old_loc; | |
d7cd448a | 9749 | |
ac1739da | 9750 | old_loc = gfc_current_locus; |
d7cd448a | 9751 | |
ac1739da | 9752 | if (gfc_match_eos () != MATCH_YES) |
9753 | { | |
9754 | gfc_error ("Junk after UNION statement at %C"); | |
9755 | gfc_current_locus = old_loc; | |
9756 | return MATCH_ERROR; | |
9757 | } | |
d7cd448a | 9758 | |
ac1739da | 9759 | /* Unions are anonymous so we make up unique names for the symbol table |
9760 | which are invalid Fortran identifiers. */ | |
9761 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "UU$%u", gfc_union_id++); | |
d7cd448a | 9762 | |
ac1739da | 9763 | if (!get_struct_decl (name, FL_UNION, &old_loc, &sym)) |
9764 | return MATCH_ERROR; | |
d7cd448a | 9765 | |
ac1739da | 9766 | gfc_new_block = sym; |
d7cd448a | 9767 | |
ac1739da | 9768 | return MATCH_YES; |
d7cd448a | 9769 | } |
9770 | ||
9771 | ||
9772 | /* Match the beginning of a STRUCTURE declaration. This is similar to | |
9773 | matching the beginning of a derived type declaration with a few | |
9774 | twists. The resulting type symbol has no access control or other | |
9775 | interesting attributes. */ | |
9776 | ||
9777 | match | |
9778 | gfc_match_structure_decl (void) | |
9779 | { | |
ac1739da | 9780 | /* Counter used to give unique internal names to anonymous structures. */ |
9781 | static unsigned int gfc_structure_id = 0; | |
9782 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9783 | gfc_symbol *sym; | |
9784 | match m; | |
9785 | locus where; | |
d7cd448a | 9786 | |
ac1739da | 9787 | if (!flag_dec_structure) |
9788 | { | |
841da9cf | 9789 | gfc_error ("%s at %C is a DEC extension, enable with " |
9790 | "%<-fdec-structure%>", | |
9791 | "STRUCTURE"); | |
ac1739da | 9792 | return MATCH_ERROR; |
9793 | } | |
d7cd448a | 9794 | |
ac1739da | 9795 | name[0] = '\0'; |
d7cd448a | 9796 | |
ac1739da | 9797 | m = gfc_match (" /%n/", name); |
9798 | if (m != MATCH_YES) | |
9799 | { | |
9800 | /* Non-nested structure declarations require a structure name. */ | |
9801 | if (!gfc_comp_struct (gfc_current_state ())) | |
9802 | { | |
9803 | gfc_error ("Structure name expected in non-nested structure " | |
9804 | "declaration at %C"); | |
9805 | return MATCH_ERROR; | |
9806 | } | |
9807 | /* This is an anonymous structure; make up a unique name for it | |
9808 | (upper-case letters never make it to symbol names from the source). | |
9809 | The important thing is initializing the type variable | |
9810 | and setting gfc_new_symbol, which is immediately used by | |
9811 | parse_structure () and variable_decl () to add components of | |
9812 | this type. */ | |
9813 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "SS$%u", gfc_structure_id++); | |
9814 | } | |
d7cd448a | 9815 | |
ac1739da | 9816 | where = gfc_current_locus; |
9817 | /* No field list allowed after non-nested structure declaration. */ | |
9818 | if (!gfc_comp_struct (gfc_current_state ()) | |
9819 | && gfc_match_eos () != MATCH_YES) | |
9820 | { | |
9821 | gfc_error ("Junk after non-nested STRUCTURE statement at %C"); | |
9822 | return MATCH_ERROR; | |
9823 | } | |
d7cd448a | 9824 | |
ac1739da | 9825 | /* Make sure the name is not the name of an intrinsic type. */ |
9826 | if (gfc_is_intrinsic_typename (name)) | |
9827 | { | |
1b7008c4 | 9828 | gfc_error ("Structure name %qs at %C cannot be the same as an" |
ac1739da | 9829 | " intrinsic type", name); |
9830 | return MATCH_ERROR; | |
9831 | } | |
d7cd448a | 9832 | |
ac1739da | 9833 | /* Store the actual type symbol for the structure with an upper-case first |
9834 | letter (an invalid Fortran identifier). */ | |
d7cd448a | 9835 | |
dc326dc0 | 9836 | if (!get_struct_decl (gfc_dt_upper_string (name), FL_STRUCT, &where, &sym)) |
ac1739da | 9837 | return MATCH_ERROR; |
d7cd448a | 9838 | |
ac1739da | 9839 | gfc_new_block = sym; |
9840 | return MATCH_YES; | |
d7cd448a | 9841 | } |
9842 | ||
006943e8 | 9843 | |
9844 | /* This function does some work to determine which matcher should be used to | |
80ed743c | 9845 | * match a statement beginning with "TYPE". This is used to disambiguate TYPE |
006943e8 | 9846 | * as an alias for PRINT from derived type declarations, TYPE IS statements, |
80ed743c | 9847 | * and [parameterized] derived type declarations. */ |
006943e8 | 9848 | |
9849 | match | |
9850 | gfc_match_type (gfc_statement *st) | |
9851 | { | |
9852 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9853 | match m; | |
9854 | locus old_loc; | |
9855 | ||
9856 | /* Requires -fdec. */ | |
9857 | if (!flag_dec) | |
9858 | return MATCH_NO; | |
9859 | ||
9860 | m = gfc_match ("type"); | |
9861 | if (m != MATCH_YES) | |
9862 | return m; | |
9863 | /* If we already have an error in the buffer, it is probably from failing to | |
9864 | * match a derived type data declaration. Let it happen. */ | |
9865 | else if (gfc_error_flag_test ()) | |
9866 | return MATCH_NO; | |
9867 | ||
9868 | old_loc = gfc_current_locus; | |
9869 | *st = ST_NONE; | |
9870 | ||
9871 | /* If we see an attribute list before anything else it's definitely a derived | |
9872 | * type declaration. */ | |
9873 | if (gfc_match (" ,") == MATCH_YES || gfc_match (" ::") == MATCH_YES) | |
80ed743c | 9874 | goto derived; |
006943e8 | 9875 | |
9876 | /* By now "TYPE" has already been matched. If we do not see a name, this may | |
9877 | * be something like "TYPE *" or "TYPE <fmt>". */ | |
9878 | m = gfc_match_name (name); | |
9879 | if (m != MATCH_YES) | |
9880 | { | |
9881 | /* Let print match if it can, otherwise throw an error from | |
9882 | * gfc_match_derived_decl. */ | |
9883 | gfc_current_locus = old_loc; | |
9884 | if (gfc_match_print () == MATCH_YES) | |
9885 | { | |
9886 | *st = ST_WRITE; | |
9887 | return MATCH_YES; | |
9888 | } | |
80ed743c | 9889 | goto derived; |
006943e8 | 9890 | } |
9891 | ||
80ed743c | 9892 | /* Check for EOS. */ |
9893 | if (gfc_match_eos () == MATCH_YES) | |
006943e8 | 9894 | { |
9895 | /* By now we have "TYPE <name> <EOS>". Check first if the name is an | |
9896 | * intrinsic typename - if so let gfc_match_derived_decl dump an error. | |
9897 | * Otherwise if gfc_match_derived_decl fails it's probably an existing | |
9898 | * symbol which can be printed. */ | |
9899 | gfc_current_locus = old_loc; | |
9900 | m = gfc_match_derived_decl (); | |
9901 | if (gfc_is_intrinsic_typename (name) || m == MATCH_YES) | |
9902 | { | |
9903 | *st = ST_DERIVED_DECL; | |
9904 | return m; | |
9905 | } | |
006943e8 | 9906 | } |
80ed743c | 9907 | else |
9908 | { | |
9909 | /* Here we have "TYPE <name>". Check for <TYPE IS (> or a PDT declaration | |
9910 | like <type name(parameter)>. */ | |
9911 | gfc_gobble_whitespace (); | |
9912 | bool paren = gfc_peek_ascii_char () == '('; | |
9913 | if (paren) | |
9914 | { | |
9915 | if (strcmp ("is", name) == 0) | |
9916 | goto typeis; | |
9917 | else | |
9918 | goto derived; | |
9919 | } | |
9920 | } | |
9921 | ||
9922 | /* Treat TYPE... like PRINT... */ | |
9923 | gfc_current_locus = old_loc; | |
9924 | *st = ST_WRITE; | |
9925 | return gfc_match_print (); | |
006943e8 | 9926 | |
80ed743c | 9927 | derived: |
9928 | gfc_current_locus = old_loc; | |
9929 | *st = ST_DERIVED_DECL; | |
9930 | return gfc_match_derived_decl (); | |
9931 | ||
9932 | typeis: | |
9933 | gfc_current_locus = old_loc; | |
9934 | *st = ST_TYPE_IS; | |
9935 | return gfc_match_type_is (); | |
006943e8 | 9936 | } |
9937 | ||
9938 | ||
c5d33754 | 9939 | /* Match the beginning of a derived type declaration. If a type name |
9940 | was the result of a function, then it is possible to have a symbol | |
9941 | already to be known as a derived type yet have no components. */ | |
9942 | ||
9943 | match | |
9944 | gfc_match_derived_decl (void) | |
9945 | { | |
9946 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
ea94d76d | 9947 | char parent[GFC_MAX_SYMBOL_LEN + 1]; |
c5d33754 | 9948 | symbol_attribute attr; |
c2958b6b | 9949 | gfc_symbol *sym, *gensym; |
ea94d76d | 9950 | gfc_symbol *extended; |
c5d33754 | 9951 | match m; |
9952 | match is_type_attr_spec = MATCH_NO; | |
33e86520 | 9953 | bool seen_attr = false; |
c2958b6b | 9954 | gfc_interface *intr = NULL, *head; |
9d958d5b | 9955 | bool parameterized_type = false; |
9956 | bool seen_colons = false; | |
c5d33754 | 9957 | |
d7cd448a | 9958 | if (gfc_comp_struct (gfc_current_state ())) |
c5d33754 | 9959 | return MATCH_NO; |
9960 | ||
ea94d76d | 9961 | name[0] = '\0'; |
9962 | parent[0] = '\0'; | |
c5d33754 | 9963 | gfc_clear_attr (&attr); |
ea94d76d | 9964 | extended = NULL; |
c5d33754 | 9965 | |
9966 | do | |
9967 | { | |
ea94d76d | 9968 | is_type_attr_spec = gfc_get_type_attr_spec (&attr, parent); |
c5d33754 | 9969 | if (is_type_attr_spec == MATCH_ERROR) |
9970 | return MATCH_ERROR; | |
33e86520 | 9971 | if (is_type_attr_spec == MATCH_YES) |
9972 | seen_attr = true; | |
c5d33754 | 9973 | } while (is_type_attr_spec == MATCH_YES); |
4ee9c684 | 9974 | |
e485ad6b | 9975 | /* Deal with derived type extensions. The extension attribute has |
9976 | been added to 'attr' but now the parent type must be found and | |
9977 | checked. */ | |
ea94d76d | 9978 | if (parent[0]) |
9979 | extended = check_extended_derived_type (parent); | |
9980 | ||
9981 | if (parent[0] && !extended) | |
9982 | return MATCH_ERROR; | |
9983 | ||
9d958d5b | 9984 | m = gfc_match (" ::"); |
9985 | if (m == MATCH_YES) | |
9986 | { | |
9987 | seen_colons = true; | |
9988 | } | |
9989 | else if (seen_attr) | |
4ee9c684 | 9990 | { |
9991 | gfc_error ("Expected :: in TYPE definition at %C"); | |
9992 | return MATCH_ERROR; | |
9993 | } | |
9994 | ||
9d958d5b | 9995 | m = gfc_match (" %n ", name); |
4ee9c684 | 9996 | if (m != MATCH_YES) |
9997 | return m; | |
9998 | ||
9d958d5b | 9999 | /* Make sure that we don't identify TYPE IS (...) as a parameterized |
10000 | derived type named 'is'. | |
10001 | TODO Expand the check, when 'name' = "is" by matching " (tname) " | |
10002 | and checking if this is a(n intrinsic) typename. his picks up | |
10003 | misplaced TYPE IS statements such as in select_type_1.f03. */ | |
10004 | if (gfc_peek_ascii_char () == '(') | |
10005 | { | |
10006 | if (gfc_current_state () == COMP_SELECT_TYPE | |
10007 | || (!seen_colons && !strcmp (name, "is"))) | |
10008 | return MATCH_NO; | |
10009 | parameterized_type = true; | |
10010 | } | |
10011 | ||
10012 | m = gfc_match_eos (); | |
10013 | if (m != MATCH_YES && !parameterized_type) | |
10014 | return m; | |
10015 | ||
a3055431 | 10016 | /* Make sure the name is not the name of an intrinsic type. */ |
10017 | if (gfc_is_intrinsic_typename (name)) | |
4ee9c684 | 10018 | { |
716da296 | 10019 | gfc_error ("Type name %qs at %C cannot be the same as an intrinsic " |
1a9745d2 | 10020 | "type", name); |
4ee9c684 | 10021 | return MATCH_ERROR; |
10022 | } | |
10023 | ||
c2958b6b | 10024 | if (gfc_get_symbol (name, NULL, &gensym)) |
4ee9c684 | 10025 | return MATCH_ERROR; |
10026 | ||
c2958b6b | 10027 | if (!gensym->attr.generic && gensym->ts.type != BT_UNKNOWN) |
4ee9c684 | 10028 | { |
7dea3ef8 | 10029 | if (gensym->ts.u.derived) |
10030 | gfc_error ("Derived type name %qs at %C already has a basic type " | |
10031 | "of %s", gensym->name, gfc_typename (&gensym->ts)); | |
10032 | else | |
10033 | gfc_error ("Derived type name %qs at %C already has a basic type", | |
10034 | gensym->name); | |
c2958b6b | 10035 | return MATCH_ERROR; |
10036 | } | |
10037 | ||
10038 | if (!gensym->attr.generic | |
60e19868 | 10039 | && !gfc_add_generic (&gensym->attr, gensym->name, NULL)) |
c2958b6b | 10040 | return MATCH_ERROR; |
10041 | ||
10042 | if (!gensym->attr.function | |
60e19868 | 10043 | && !gfc_add_function (&gensym->attr, gensym->name, NULL)) |
c2958b6b | 10044 | return MATCH_ERROR; |
10045 | ||
10046 | sym = gfc_find_dt_in_generic (gensym); | |
10047 | ||
10048 | if (sym && (sym->components != NULL || sym->attr.zero_comp)) | |
10049 | { | |
716da296 | 10050 | gfc_error ("Derived type definition of %qs at %C has already been " |
c2958b6b | 10051 | "defined", sym->name); |
4ee9c684 | 10052 | return MATCH_ERROR; |
10053 | } | |
10054 | ||
c2958b6b | 10055 | if (!sym) |
10056 | { | |
10057 | /* Use upper case to save the actual derived-type symbol. */ | |
d7cd448a | 10058 | gfc_get_symbol (gfc_dt_upper_string (gensym->name), NULL, &sym); |
dc326dc0 | 10059 | sym->name = gfc_get_string ("%s", gensym->name); |
c2958b6b | 10060 | head = gensym->generic; |
10061 | intr = gfc_get_interface (); | |
10062 | intr->sym = sym; | |
10063 | intr->where = gfc_current_locus; | |
10064 | intr->sym->declared_at = gfc_current_locus; | |
10065 | intr->next = head; | |
10066 | gensym->generic = intr; | |
10067 | gensym->attr.if_source = IFSRC_DECL; | |
10068 | } | |
10069 | ||
4ee9c684 | 10070 | /* The symbol may already have the derived attribute without the |
10071 | components. The ways this can happen is via a function | |
10072 | definition, an INTRINSIC statement or a subtype in another | |
10073 | derived type that is a pointer. The first part of the AND clause | |
69b1505f | 10074 | is true if the symbol is not the return value of a function. */ |
4ee9c684 | 10075 | if (sym->attr.flavor != FL_DERIVED |
60e19868 | 10076 | && !gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL)) |
4ee9c684 | 10077 | return MATCH_ERROR; |
10078 | ||
4ee9c684 | 10079 | if (attr.access != ACCESS_UNKNOWN |
60e19868 | 10080 | && !gfc_add_access (&sym->attr, attr.access, sym->name, NULL)) |
4ee9c684 | 10081 | return MATCH_ERROR; |
c2958b6b | 10082 | else if (sym->attr.access == ACCESS_UNKNOWN |
10083 | && gensym->attr.access != ACCESS_UNKNOWN | |
76e207a9 | 10084 | && !gfc_add_access (&sym->attr, gensym->attr.access, |
60e19868 | 10085 | sym->name, NULL)) |
c2958b6b | 10086 | return MATCH_ERROR; |
10087 | ||
10088 | if (sym->attr.access != ACCESS_UNKNOWN | |
10089 | && gensym->attr.access == ACCESS_UNKNOWN) | |
10090 | gensym->attr.access = sym->attr.access; | |
4ee9c684 | 10091 | |
c5d33754 | 10092 | /* See if the derived type was labeled as bind(c). */ |
10093 | if (attr.is_bind_c != 0) | |
10094 | sym->attr.is_bind_c = attr.is_bind_c; | |
10095 | ||
223f0f57 | 10096 | /* Construct the f2k_derived namespace if it is not yet there. */ |
10097 | if (!sym->f2k_derived) | |
10098 | sym->f2k_derived = gfc_get_namespace (NULL, 0); | |
8db94b3b | 10099 | |
9d958d5b | 10100 | if (parameterized_type) |
10101 | { | |
f0efd2e8 | 10102 | /* Ignore error or mismatches by going to the end of the statement |
10103 | in order to avoid the component declarations causing problems. */ | |
10104 | m = gfc_match_formal_arglist (sym, 0, 0, true); | |
10105 | if (m != MATCH_YES) | |
10106 | gfc_error_recovery (); | |
9d958d5b | 10107 | m = gfc_match_eos (); |
10108 | if (m != MATCH_YES) | |
8df28d5e | 10109 | { |
10110 | gfc_error_recovery (); | |
10111 | gfc_error_now ("Garbage after PARAMETERIZED TYPE declaration at %C"); | |
10112 | } | |
9d958d5b | 10113 | sym->attr.pdt_template = 1; |
10114 | } | |
10115 | ||
ea94d76d | 10116 | if (extended && !sym->components) |
10117 | { | |
10118 | gfc_component *p; | |
9d958d5b | 10119 | gfc_formal_arglist *f, *g, *h; |
ea94d76d | 10120 | |
10121 | /* Add the extended derived type as the first component. */ | |
10122 | gfc_add_component (sym, parent, &p); | |
ea94d76d | 10123 | extended->refs++; |
10124 | gfc_set_sym_referenced (extended); | |
10125 | ||
10126 | p->ts.type = BT_DERIVED; | |
eeebe20b | 10127 | p->ts.u.derived = extended; |
ea94d76d | 10128 | p->initializer = gfc_default_initializer (&p->ts); |
8db94b3b | 10129 | |
bdfbc762 | 10130 | /* Set extension level. */ |
10131 | if (extended->attr.extension == 255) | |
10132 | { | |
10133 | /* Since the extension field is 8 bit wide, we can only have | |
10134 | up to 255 extension levels. */ | |
716da296 | 10135 | gfc_error ("Maximum extension level reached with type %qs at %L", |
bdfbc762 | 10136 | extended->name, &extended->declared_at); |
10137 | return MATCH_ERROR; | |
10138 | } | |
10139 | sym->attr.extension = extended->attr.extension + 1; | |
ea94d76d | 10140 | |
10141 | /* Provide the links between the extended type and its extension. */ | |
10142 | if (!extended->f2k_derived) | |
10143 | extended->f2k_derived = gfc_get_namespace (NULL, 0); | |
9d958d5b | 10144 | |
10145 | /* Copy the extended type-param-name-list from the extended type, | |
10146 | append those of the extension and add the whole lot to the | |
10147 | extension. */ | |
10148 | if (extended->attr.pdt_template) | |
10149 | { | |
10150 | g = h = NULL; | |
10151 | sym->attr.pdt_template = 1; | |
10152 | for (f = extended->formal; f; f = f->next) | |
10153 | { | |
10154 | if (f == extended->formal) | |
10155 | { | |
10156 | g = gfc_get_formal_arglist (); | |
10157 | h = g; | |
10158 | } | |
10159 | else | |
10160 | { | |
10161 | g->next = gfc_get_formal_arglist (); | |
10162 | g = g->next; | |
10163 | } | |
10164 | g->sym = f->sym; | |
10165 | } | |
10166 | g->next = sym->formal; | |
10167 | sym->formal = h; | |
10168 | } | |
ea94d76d | 10169 | } |
10170 | ||
bdfbc762 | 10171 | if (!sym->hash_value) |
10172 | /* Set the hash for the compound name for this type. */ | |
a656e7c2 | 10173 | sym->hash_value = gfc_hash_value (sym); |
1de1b1a9 | 10174 | |
ac5f2650 | 10175 | /* Take over the ABSTRACT attribute. */ |
10176 | sym->attr.abstract = attr.abstract; | |
10177 | ||
4ee9c684 | 10178 | gfc_new_block = sym; |
10179 | ||
10180 | return MATCH_YES; | |
10181 | } | |
b549d2a5 | 10182 | |
10183 | ||
8db94b3b | 10184 | /* Cray Pointees can be declared as: |
452695a8 | 10185 | pointer (ipt, a (n,m,...,*)) */ |
b549d2a5 | 10186 | |
8458f4ca | 10187 | match |
b549d2a5 | 10188 | gfc_mod_pointee_as (gfc_array_spec *as) |
10189 | { | |
10190 | as->cray_pointee = true; /* This will be useful to know later. */ | |
10191 | if (as->type == AS_ASSUMED_SIZE) | |
452695a8 | 10192 | as->cp_was_assumed = true; |
b549d2a5 | 10193 | else if (as->type == AS_ASSUMED_SHAPE) |
10194 | { | |
10195 | gfc_error ("Cray Pointee at %C cannot be assumed shape array"); | |
10196 | return MATCH_ERROR; | |
10197 | } | |
10198 | return MATCH_YES; | |
10199 | } | |
3b6a4b41 | 10200 | |
10201 | ||
8db94b3b | 10202 | /* Match the enum definition statement, here we are trying to match |
10203 | the first line of enum definition statement. | |
3b6a4b41 | 10204 | Returns MATCH_YES if match is found. */ |
10205 | ||
10206 | match | |
10207 | gfc_match_enum (void) | |
10208 | { | |
10209 | match m; | |
8db94b3b | 10210 | |
3b6a4b41 | 10211 | m = gfc_match_eos (); |
10212 | if (m != MATCH_YES) | |
10213 | return m; | |
10214 | ||
60e19868 | 10215 | if (!gfc_notify_std (GFC_STD_F2003, "ENUM and ENUMERATOR at %C")) |
3b6a4b41 | 10216 | return MATCH_ERROR; |
10217 | ||
10218 | return MATCH_YES; | |
10219 | } | |
10220 | ||
10221 | ||
fe1328da | 10222 | /* Returns an initializer whose value is one higher than the value of the |
10223 | LAST_INITIALIZER argument. If the argument is NULL, the | |
10224 | initializers value will be set to zero. The initializer's kind | |
10225 | will be set to gfc_c_int_kind. | |
10226 | ||
10227 | If -fshort-enums is given, the appropriate kind will be selected | |
10228 | later after all enumerators have been parsed. A warning is issued | |
10229 | here if an initializer exceeds gfc_c_int_kind. */ | |
10230 | ||
10231 | static gfc_expr * | |
10232 | enum_initializer (gfc_expr *last_initializer, locus where) | |
10233 | { | |
10234 | gfc_expr *result; | |
126387b5 | 10235 | result = gfc_get_constant_expr (BT_INTEGER, gfc_c_int_kind, &where); |
fe1328da | 10236 | |
10237 | mpz_init (result->value.integer); | |
10238 | ||
10239 | if (last_initializer != NULL) | |
10240 | { | |
10241 | mpz_add_ui (result->value.integer, last_initializer->value.integer, 1); | |
10242 | result->where = last_initializer->where; | |
10243 | ||
10244 | if (gfc_check_integer_range (result->value.integer, | |
10245 | gfc_c_int_kind) != ARITH_OK) | |
10246 | { | |
10247 | gfc_error ("Enumerator exceeds the C integer type at %C"); | |
10248 | return NULL; | |
10249 | } | |
10250 | } | |
10251 | else | |
10252 | { | |
10253 | /* Control comes here, if it's the very first enumerator and no | |
10254 | initializer has been given. It will be initialized to zero. */ | |
10255 | mpz_set_si (result->value.integer, 0); | |
10256 | } | |
10257 | ||
10258 | return result; | |
10259 | } | |
10260 | ||
10261 | ||
60fbbf9e | 10262 | /* Match a variable name with an optional initializer. When this |
10263 | subroutine is called, a variable is expected to be parsed next. | |
10264 | Depending on what is happening at the moment, updates either the | |
10265 | symbol table or the current interface. */ | |
10266 | ||
10267 | static match | |
10268 | enumerator_decl (void) | |
10269 | { | |
10270 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10271 | gfc_expr *initializer; | |
10272 | gfc_array_spec *as = NULL; | |
10273 | gfc_symbol *sym; | |
10274 | locus var_locus; | |
10275 | match m; | |
60e19868 | 10276 | bool t; |
60fbbf9e | 10277 | locus old_locus; |
10278 | ||
10279 | initializer = NULL; | |
10280 | old_locus = gfc_current_locus; | |
10281 | ||
10282 | /* When we get here, we've just matched a list of attributes and | |
10283 | maybe a type and a double colon. The next thing we expect to see | |
10284 | is the name of the symbol. */ | |
10285 | m = gfc_match_name (name); | |
10286 | if (m != MATCH_YES) | |
10287 | goto cleanup; | |
10288 | ||
10289 | var_locus = gfc_current_locus; | |
10290 | ||
10291 | /* OK, we've successfully matched the declaration. Now put the | |
10292 | symbol in the current namespace. If we fail to create the symbol, | |
10293 | bail out. */ | |
60e19868 | 10294 | if (!build_sym (name, NULL, false, &as, &var_locus)) |
60fbbf9e | 10295 | { |
10296 | m = MATCH_ERROR; | |
10297 | goto cleanup; | |
10298 | } | |
10299 | ||
10300 | /* The double colon must be present in order to have initializers. | |
10301 | Otherwise the statement is ambiguous with an assignment statement. */ | |
10302 | if (colon_seen) | |
10303 | { | |
10304 | if (gfc_match_char ('=') == MATCH_YES) | |
10305 | { | |
10306 | m = gfc_match_init_expr (&initializer); | |
10307 | if (m == MATCH_NO) | |
10308 | { | |
10309 | gfc_error ("Expected an initialization expression at %C"); | |
10310 | m = MATCH_ERROR; | |
10311 | } | |
10312 | ||
10313 | if (m != MATCH_YES) | |
10314 | goto cleanup; | |
10315 | } | |
10316 | } | |
10317 | ||
10318 | /* If we do not have an initializer, the initialization value of the | |
10319 | previous enumerator (stored in last_initializer) is incremented | |
10320 | by 1 and is used to initialize the current enumerator. */ | |
10321 | if (initializer == NULL) | |
fe1328da | 10322 | initializer = enum_initializer (last_initializer, old_locus); |
e14bee04 | 10323 | |
60fbbf9e | 10324 | if (initializer == NULL || initializer->ts.type != BT_INTEGER) |
10325 | { | |
a8beb4f8 | 10326 | gfc_error ("ENUMERATOR %L not initialized with integer expression", |
10327 | &var_locus); | |
e14bee04 | 10328 | m = MATCH_ERROR; |
60fbbf9e | 10329 | goto cleanup; |
10330 | } | |
10331 | ||
10332 | /* Store this current initializer, for the next enumerator variable | |
10333 | to be parsed. add_init_expr_to_sym() zeros initializer, so we | |
10334 | use last_initializer below. */ | |
10335 | last_initializer = initializer; | |
10336 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
10337 | ||
10338 | /* Maintain enumerator history. */ | |
10339 | gfc_find_symbol (name, NULL, 0, &sym); | |
10340 | create_enum_history (sym, last_initializer); | |
10341 | ||
60e19868 | 10342 | return (t) ? MATCH_YES : MATCH_ERROR; |
60fbbf9e | 10343 | |
10344 | cleanup: | |
10345 | /* Free stuff up and return. */ | |
10346 | gfc_free_expr (initializer); | |
10347 | ||
10348 | return m; | |
10349 | } | |
10350 | ||
10351 | ||
f6d0e37a | 10352 | /* Match the enumerator definition statement. */ |
3b6a4b41 | 10353 | |
10354 | match | |
10355 | gfc_match_enumerator_def (void) | |
10356 | { | |
10357 | match m; | |
60e19868 | 10358 | bool t; |
e14bee04 | 10359 | |
3b6a4b41 | 10360 | gfc_clear_ts (¤t_ts); |
e14bee04 | 10361 | |
3b6a4b41 | 10362 | m = gfc_match (" enumerator"); |
10363 | if (m != MATCH_YES) | |
10364 | return m; | |
60fbbf9e | 10365 | |
10366 | m = gfc_match (" :: "); | |
10367 | if (m == MATCH_ERROR) | |
10368 | return m; | |
10369 | ||
10370 | colon_seen = (m == MATCH_YES); | |
e14bee04 | 10371 | |
3b6a4b41 | 10372 | if (gfc_current_state () != COMP_ENUM) |
10373 | { | |
10374 | gfc_error ("ENUM definition statement expected before %C"); | |
10375 | gfc_free_enum_history (); | |
10376 | return MATCH_ERROR; | |
10377 | } | |
10378 | ||
10379 | (¤t_ts)->type = BT_INTEGER; | |
10380 | (¤t_ts)->kind = gfc_c_int_kind; | |
e14bee04 | 10381 | |
60fbbf9e | 10382 | gfc_clear_attr (¤t_attr); |
10383 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, NULL); | |
60e19868 | 10384 | if (!t) |
3b6a4b41 | 10385 | { |
60fbbf9e | 10386 | m = MATCH_ERROR; |
3b6a4b41 | 10387 | goto cleanup; |
10388 | } | |
10389 | ||
3b6a4b41 | 10390 | for (;;) |
10391 | { | |
60fbbf9e | 10392 | m = enumerator_decl (); |
3b6a4b41 | 10393 | if (m == MATCH_ERROR) |
a8beb4f8 | 10394 | { |
10395 | gfc_free_enum_history (); | |
10396 | goto cleanup; | |
10397 | } | |
3b6a4b41 | 10398 | if (m == MATCH_NO) |
10399 | break; | |
10400 | ||
10401 | if (gfc_match_eos () == MATCH_YES) | |
10402 | goto cleanup; | |
10403 | if (gfc_match_char (',') != MATCH_YES) | |
10404 | break; | |
10405 | } | |
10406 | ||
10407 | if (gfc_current_state () == COMP_ENUM) | |
10408 | { | |
10409 | gfc_free_enum_history (); | |
10410 | gfc_error ("Syntax error in ENUMERATOR definition at %C"); | |
10411 | m = MATCH_ERROR; | |
10412 | } | |
10413 | ||
10414 | cleanup: | |
10415 | gfc_free_array_spec (current_as); | |
10416 | current_as = NULL; | |
10417 | return m; | |
10418 | ||
10419 | } | |
10420 | ||
e449e4dd | 10421 | |
7fd88f6e | 10422 | /* Match binding attributes. */ |
10423 | ||
10424 | static match | |
64e93293 | 10425 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc) |
7fd88f6e | 10426 | { |
10427 | bool found_passing = false; | |
64e93293 | 10428 | bool seen_ptr = false; |
fe9b08a2 | 10429 | match m = MATCH_YES; |
7fd88f6e | 10430 | |
df084314 | 10431 | /* Initialize to defaults. Do so even before the MATCH_NO check so that in |
7fd88f6e | 10432 | this case the defaults are in there. */ |
10433 | ba->access = ACCESS_UNKNOWN; | |
10434 | ba->pass_arg = NULL; | |
10435 | ba->pass_arg_num = 0; | |
10436 | ba->nopass = 0; | |
10437 | ba->non_overridable = 0; | |
61c3b81d | 10438 | ba->deferred = 0; |
fe9b08a2 | 10439 | ba->ppc = ppc; |
7fd88f6e | 10440 | |
10441 | /* If we find a comma, we believe there are binding attributes. */ | |
fe9b08a2 | 10442 | m = gfc_match_char (','); |
10443 | if (m == MATCH_NO) | |
10444 | goto done; | |
7fd88f6e | 10445 | |
10446 | do | |
10447 | { | |
e2f06a48 | 10448 | /* Access specifier. */ |
10449 | ||
10450 | m = gfc_match (" public"); | |
7fd88f6e | 10451 | if (m == MATCH_ERROR) |
10452 | goto error; | |
10453 | if (m == MATCH_YES) | |
10454 | { | |
e2f06a48 | 10455 | if (ba->access != ACCESS_UNKNOWN) |
7fd88f6e | 10456 | { |
e2f06a48 | 10457 | gfc_error ("Duplicate access-specifier at %C"); |
7fd88f6e | 10458 | goto error; |
10459 | } | |
10460 | ||
e2f06a48 | 10461 | ba->access = ACCESS_PUBLIC; |
7fd88f6e | 10462 | continue; |
10463 | } | |
10464 | ||
e2f06a48 | 10465 | m = gfc_match (" private"); |
7fd88f6e | 10466 | if (m == MATCH_ERROR) |
10467 | goto error; | |
10468 | if (m == MATCH_YES) | |
10469 | { | |
e2f06a48 | 10470 | if (ba->access != ACCESS_UNKNOWN) |
7fd88f6e | 10471 | { |
e2f06a48 | 10472 | gfc_error ("Duplicate access-specifier at %C"); |
7fd88f6e | 10473 | goto error; |
10474 | } | |
10475 | ||
e2f06a48 | 10476 | ba->access = ACCESS_PRIVATE; |
7fd88f6e | 10477 | continue; |
10478 | } | |
10479 | ||
e2f06a48 | 10480 | /* If inside GENERIC, the following is not allowed. */ |
10481 | if (!generic) | |
7fd88f6e | 10482 | { |
7fd88f6e | 10483 | |
e2f06a48 | 10484 | /* NOPASS flag. */ |
10485 | m = gfc_match (" nopass"); | |
10486 | if (m == MATCH_ERROR) | |
10487 | goto error; | |
10488 | if (m == MATCH_YES) | |
7fd88f6e | 10489 | { |
e2f06a48 | 10490 | if (found_passing) |
10491 | { | |
10492 | gfc_error ("Binding attributes already specify passing," | |
10493 | " illegal NOPASS at %C"); | |
10494 | goto error; | |
10495 | } | |
10496 | ||
10497 | found_passing = true; | |
10498 | ba->nopass = 1; | |
10499 | continue; | |
7fd88f6e | 10500 | } |
10501 | ||
e2f06a48 | 10502 | /* PASS possibly including argument. */ |
10503 | m = gfc_match (" pass"); | |
10504 | if (m == MATCH_ERROR) | |
10505 | goto error; | |
10506 | if (m == MATCH_YES) | |
7fd88f6e | 10507 | { |
e2f06a48 | 10508 | char arg[GFC_MAX_SYMBOL_LEN + 1]; |
10509 | ||
10510 | if (found_passing) | |
10511 | { | |
10512 | gfc_error ("Binding attributes already specify passing," | |
10513 | " illegal PASS at %C"); | |
10514 | goto error; | |
10515 | } | |
10516 | ||
10517 | m = gfc_match (" ( %n )", arg); | |
10518 | if (m == MATCH_ERROR) | |
10519 | goto error; | |
10520 | if (m == MATCH_YES) | |
dc326dc0 | 10521 | ba->pass_arg = gfc_get_string ("%s", arg); |
e2f06a48 | 10522 | gcc_assert ((m == MATCH_YES) == (ba->pass_arg != NULL)); |
10523 | ||
10524 | found_passing = true; | |
10525 | ba->nopass = 0; | |
10526 | continue; | |
7fd88f6e | 10527 | } |
10528 | ||
64e93293 | 10529 | if (ppc) |
10530 | { | |
10531 | /* POINTER flag. */ | |
10532 | m = gfc_match (" pointer"); | |
10533 | if (m == MATCH_ERROR) | |
10534 | goto error; | |
10535 | if (m == MATCH_YES) | |
10536 | { | |
10537 | if (seen_ptr) | |
10538 | { | |
10539 | gfc_error ("Duplicate POINTER attribute at %C"); | |
10540 | goto error; | |
10541 | } | |
10542 | ||
10543 | seen_ptr = true; | |
64e93293 | 10544 | continue; |
10545 | } | |
10546 | } | |
10547 | else | |
10548 | { | |
10549 | /* NON_OVERRIDABLE flag. */ | |
10550 | m = gfc_match (" non_overridable"); | |
10551 | if (m == MATCH_ERROR) | |
10552 | goto error; | |
10553 | if (m == MATCH_YES) | |
10554 | { | |
10555 | if (ba->non_overridable) | |
10556 | { | |
10557 | gfc_error ("Duplicate NON_OVERRIDABLE at %C"); | |
10558 | goto error; | |
10559 | } | |
10560 | ||
10561 | ba->non_overridable = 1; | |
10562 | continue; | |
10563 | } | |
10564 | ||
10565 | /* DEFERRED flag. */ | |
10566 | m = gfc_match (" deferred"); | |
10567 | if (m == MATCH_ERROR) | |
10568 | goto error; | |
10569 | if (m == MATCH_YES) | |
10570 | { | |
10571 | if (ba->deferred) | |
10572 | { | |
10573 | gfc_error ("Duplicate DEFERRED at %C"); | |
10574 | goto error; | |
10575 | } | |
10576 | ||
10577 | ba->deferred = 1; | |
10578 | continue; | |
10579 | } | |
10580 | } | |
10581 | ||
7fd88f6e | 10582 | } |
10583 | ||
10584 | /* Nothing matching found. */ | |
e2f06a48 | 10585 | if (generic) |
10586 | gfc_error ("Expected access-specifier at %C"); | |
10587 | else | |
10588 | gfc_error ("Expected binding attribute at %C"); | |
7fd88f6e | 10589 | goto error; |
10590 | } | |
10591 | while (gfc_match_char (',') == MATCH_YES); | |
10592 | ||
61c3b81d | 10593 | /* NON_OVERRIDABLE and DEFERRED exclude themselves. */ |
10594 | if (ba->non_overridable && ba->deferred) | |
10595 | { | |
10596 | gfc_error ("NON_OVERRIDABLE and DEFERRED can't both appear at %C"); | |
10597 | goto error; | |
10598 | } | |
10599 | ||
fe9b08a2 | 10600 | m = MATCH_YES; |
10601 | ||
10602 | done: | |
e2f06a48 | 10603 | if (ba->access == ACCESS_UNKNOWN) |
c41ff969 | 10604 | ba->access = ppc ? gfc_current_block()->component_access |
10605 | : gfc_typebound_default_access; | |
e2f06a48 | 10606 | |
64e93293 | 10607 | if (ppc && !seen_ptr) |
10608 | { | |
10609 | gfc_error ("POINTER attribute is required for procedure pointer component" | |
10610 | " at %C"); | |
10611 | goto error; | |
10612 | } | |
10613 | ||
fe9b08a2 | 10614 | return m; |
7fd88f6e | 10615 | |
10616 | error: | |
7fd88f6e | 10617 | return MATCH_ERROR; |
10618 | } | |
10619 | ||
10620 | ||
10621 | /* Match a PROCEDURE specific binding inside a derived type. */ | |
10622 | ||
10623 | static match | |
10624 | match_procedure_in_type (void) | |
10625 | { | |
10626 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10627 | char target_buf[GFC_MAX_SYMBOL_LEN + 1]; | |
7a3aaef8 | 10628 | char* target = NULL, *ifc = NULL; |
4a12b9ba | 10629 | gfc_typebound_proc tb; |
7fd88f6e | 10630 | bool seen_colons; |
10631 | bool seen_attrs; | |
10632 | match m; | |
10633 | gfc_symtree* stree; | |
10634 | gfc_namespace* ns; | |
10635 | gfc_symbol* block; | |
7a3aaef8 | 10636 | int num; |
7fd88f6e | 10637 | |
10638 | /* Check current state. */ | |
10639 | gcc_assert (gfc_state_stack->state == COMP_DERIVED_CONTAINS); | |
10640 | block = gfc_state_stack->previous->sym; | |
10641 | gcc_assert (block); | |
10642 | ||
61c3b81d | 10643 | /* Try to match PROCEDURE(interface). */ |
7fd88f6e | 10644 | if (gfc_match (" (") == MATCH_YES) |
10645 | { | |
61c3b81d | 10646 | m = gfc_match_name (target_buf); |
10647 | if (m == MATCH_ERROR) | |
10648 | return m; | |
10649 | if (m != MATCH_YES) | |
10650 | { | |
0d2b3c9c | 10651 | gfc_error ("Interface-name expected after %<(%> at %C"); |
61c3b81d | 10652 | return MATCH_ERROR; |
10653 | } | |
10654 | ||
10655 | if (gfc_match (" )") != MATCH_YES) | |
10656 | { | |
0d2b3c9c | 10657 | gfc_error ("%<)%> expected at %C"); |
61c3b81d | 10658 | return MATCH_ERROR; |
10659 | } | |
10660 | ||
7a3aaef8 | 10661 | ifc = target_buf; |
7fd88f6e | 10662 | } |
10663 | ||
10664 | /* Construct the data structure. */ | |
b3d1387f | 10665 | memset (&tb, 0, sizeof (tb)); |
4a12b9ba | 10666 | tb.where = gfc_current_locus; |
7fd88f6e | 10667 | |
10668 | /* Match binding attributes. */ | |
4a12b9ba | 10669 | m = match_binding_attributes (&tb, false, false); |
7fd88f6e | 10670 | if (m == MATCH_ERROR) |
10671 | return m; | |
10672 | seen_attrs = (m == MATCH_YES); | |
10673 | ||
7a3aaef8 | 10674 | /* Check that attribute DEFERRED is given if an interface is specified. */ |
4a12b9ba | 10675 | if (tb.deferred && !ifc) |
61c3b81d | 10676 | { |
10677 | gfc_error ("Interface must be specified for DEFERRED binding at %C"); | |
10678 | return MATCH_ERROR; | |
10679 | } | |
4a12b9ba | 10680 | if (ifc && !tb.deferred) |
61c3b81d | 10681 | { |
10682 | gfc_error ("PROCEDURE(interface) at %C should be declared DEFERRED"); | |
10683 | return MATCH_ERROR; | |
10684 | } | |
10685 | ||
7fd88f6e | 10686 | /* Match the colons. */ |
10687 | m = gfc_match (" ::"); | |
10688 | if (m == MATCH_ERROR) | |
10689 | return m; | |
10690 | seen_colons = (m == MATCH_YES); | |
10691 | if (seen_attrs && !seen_colons) | |
10692 | { | |
0d2b3c9c | 10693 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
7fd88f6e | 10694 | return MATCH_ERROR; |
10695 | } | |
10696 | ||
8db94b3b | 10697 | /* Match the binding names. */ |
7a3aaef8 | 10698 | for(num=1;;num++) |
7fd88f6e | 10699 | { |
7a3aaef8 | 10700 | m = gfc_match_name (name); |
10701 | if (m == MATCH_ERROR) | |
10702 | return m; | |
10703 | if (m == MATCH_NO) | |
61c3b81d | 10704 | { |
7a3aaef8 | 10705 | gfc_error ("Expected binding name at %C"); |
61c3b81d | 10706 | return MATCH_ERROR; |
10707 | } | |
10708 | ||
60e19868 | 10709 | if (num>1 && !gfc_notify_std (GFC_STD_F2008, "PROCEDURE list at %C")) |
7a3aaef8 | 10710 | return MATCH_ERROR; |
7fd88f6e | 10711 | |
7a3aaef8 | 10712 | /* Try to match the '=> target', if it's there. */ |
10713 | target = ifc; | |
10714 | m = gfc_match (" =>"); | |
7fd88f6e | 10715 | if (m == MATCH_ERROR) |
10716 | return m; | |
7a3aaef8 | 10717 | if (m == MATCH_YES) |
7fd88f6e | 10718 | { |
4a12b9ba | 10719 | if (tb.deferred) |
7a3aaef8 | 10720 | { |
0d2b3c9c | 10721 | gfc_error ("%<=> target%> is invalid for DEFERRED binding at %C"); |
7a3aaef8 | 10722 | return MATCH_ERROR; |
10723 | } | |
10724 | ||
10725 | if (!seen_colons) | |
10726 | { | |
0d2b3c9c | 10727 | gfc_error ("%<::%> needed in PROCEDURE binding with explicit target" |
7a3aaef8 | 10728 | " at %C"); |
10729 | return MATCH_ERROR; | |
10730 | } | |
10731 | ||
10732 | m = gfc_match_name (target_buf); | |
10733 | if (m == MATCH_ERROR) | |
10734 | return m; | |
10735 | if (m == MATCH_NO) | |
10736 | { | |
0d2b3c9c | 10737 | gfc_error ("Expected binding target after %<=>%> at %C"); |
7a3aaef8 | 10738 | return MATCH_ERROR; |
10739 | } | |
10740 | target = target_buf; | |
7fd88f6e | 10741 | } |
7fd88f6e | 10742 | |
7a3aaef8 | 10743 | /* If no target was found, it has the same name as the binding. */ |
10744 | if (!target) | |
10745 | target = name; | |
7fd88f6e | 10746 | |
7a3aaef8 | 10747 | /* Get the namespace to insert the symbols into. */ |
10748 | ns = block->f2k_derived; | |
10749 | gcc_assert (ns); | |
7fd88f6e | 10750 | |
7a3aaef8 | 10751 | /* If the binding is DEFERRED, check that the containing type is ABSTRACT. */ |
4a12b9ba | 10752 | if (tb.deferred && !block->attr.abstract) |
7a3aaef8 | 10753 | { |
716da296 | 10754 | gfc_error ("Type %qs containing DEFERRED binding at %C " |
7a3aaef8 | 10755 | "is not ABSTRACT", block->name); |
10756 | return MATCH_ERROR; | |
10757 | } | |
7fd88f6e | 10758 | |
7a3aaef8 | 10759 | /* See if we already have a binding with this name in the symtree which |
9834e1b6 | 10760 | would be an error. If a GENERIC already targeted this binding, it may |
7a3aaef8 | 10761 | be already there but then typebound is still NULL. */ |
10762 | stree = gfc_find_symtree (ns->tb_sym_root, name); | |
e204cb62 | 10763 | if (stree && stree->n.tb) |
7a3aaef8 | 10764 | { |
716da296 | 10765 | gfc_error ("There is already a procedure with binding name %qs for " |
10766 | "the derived type %qs at %C", name, block->name); | |
7a3aaef8 | 10767 | return MATCH_ERROR; |
10768 | } | |
61c3b81d | 10769 | |
7a3aaef8 | 10770 | /* Insert it and set attributes. */ |
7fd88f6e | 10771 | |
e204cb62 | 10772 | if (!stree) |
10773 | { | |
10774 | stree = gfc_new_symtree (&ns->tb_sym_root, name); | |
10775 | gcc_assert (stree); | |
10776 | } | |
4a12b9ba | 10777 | stree->n.tb = gfc_get_typebound_proc (&tb); |
3323e9b1 | 10778 | |
4a12b9ba | 10779 | if (gfc_get_sym_tree (target, gfc_current_ns, &stree->n.tb->u.specific, |
10780 | false)) | |
7a3aaef8 | 10781 | return MATCH_ERROR; |
4a12b9ba | 10782 | gfc_set_sym_referenced (stree->n.tb->u.specific->n.sym); |
1f302f2e | 10783 | gfc_add_flavor(&stree->n.tb->u.specific->n.sym->attr, FL_PROCEDURE, |
10784 | target, &stree->n.tb->u.specific->n.sym->declared_at); | |
8db94b3b | 10785 | |
7a3aaef8 | 10786 | if (gfc_match_eos () == MATCH_YES) |
10787 | return MATCH_YES; | |
10788 | if (gfc_match_char (',') != MATCH_YES) | |
10789 | goto syntax; | |
3323e9b1 | 10790 | } |
7fd88f6e | 10791 | |
7a3aaef8 | 10792 | syntax: |
10793 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
10794 | return MATCH_ERROR; | |
7fd88f6e | 10795 | } |
10796 | ||
10797 | ||
e2f06a48 | 10798 | /* Match a GENERIC procedure binding inside a derived type. */ |
10799 | ||
10800 | match | |
10801 | gfc_match_generic (void) | |
10802 | { | |
10803 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
a36eb9ee | 10804 | char bind_name[GFC_MAX_SYMBOL_LEN + 16]; /* Allow space for OPERATOR(...). */ |
e2f06a48 | 10805 | gfc_symbol* block; |
10806 | gfc_typebound_proc tbattr; /* Used for match_binding_attributes. */ | |
10807 | gfc_typebound_proc* tb; | |
e2f06a48 | 10808 | gfc_namespace* ns; |
a36eb9ee | 10809 | interface_type op_type; |
10810 | gfc_intrinsic_op op; | |
e2f06a48 | 10811 | match m; |
10812 | ||
10813 | /* Check current state. */ | |
10814 | if (gfc_current_state () == COMP_DERIVED) | |
10815 | { | |
10816 | gfc_error ("GENERIC at %C must be inside a derived-type CONTAINS"); | |
10817 | return MATCH_ERROR; | |
10818 | } | |
10819 | if (gfc_current_state () != COMP_DERIVED_CONTAINS) | |
10820 | return MATCH_NO; | |
10821 | block = gfc_state_stack->previous->sym; | |
10822 | ns = block->f2k_derived; | |
10823 | gcc_assert (block && ns); | |
10824 | ||
b3d1387f | 10825 | memset (&tbattr, 0, sizeof (tbattr)); |
10826 | tbattr.where = gfc_current_locus; | |
10827 | ||
e2f06a48 | 10828 | /* See if we get an access-specifier. */ |
64e93293 | 10829 | m = match_binding_attributes (&tbattr, true, false); |
e2f06a48 | 10830 | if (m == MATCH_ERROR) |
10831 | goto error; | |
10832 | ||
10833 | /* Now the colons, those are required. */ | |
10834 | if (gfc_match (" ::") != MATCH_YES) | |
10835 | { | |
0d2b3c9c | 10836 | gfc_error ("Expected %<::%> at %C"); |
e2f06a48 | 10837 | goto error; |
10838 | } | |
10839 | ||
a36eb9ee | 10840 | /* Match the binding name; depending on type (operator / generic) format |
10841 | it for future error messages into bind_name. */ | |
8db94b3b | 10842 | |
a36eb9ee | 10843 | m = gfc_match_generic_spec (&op_type, name, &op); |
e2f06a48 | 10844 | if (m == MATCH_ERROR) |
10845 | return MATCH_ERROR; | |
10846 | if (m == MATCH_NO) | |
10847 | { | |
a36eb9ee | 10848 | gfc_error ("Expected generic name or operator descriptor at %C"); |
e2f06a48 | 10849 | goto error; |
10850 | } | |
10851 | ||
a36eb9ee | 10852 | switch (op_type) |
e2f06a48 | 10853 | { |
a36eb9ee | 10854 | case INTERFACE_GENERIC: |
9f732c4e | 10855 | case INTERFACE_DTIO: |
a36eb9ee | 10856 | snprintf (bind_name, sizeof (bind_name), "%s", name); |
10857 | break; | |
8db94b3b | 10858 | |
a36eb9ee | 10859 | case INTERFACE_USER_OP: |
10860 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(.%s.)", name); | |
10861 | break; | |
8db94b3b | 10862 | |
a36eb9ee | 10863 | case INTERFACE_INTRINSIC_OP: |
10864 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(%s)", | |
10865 | gfc_op2string (op)); | |
10866 | break; | |
10867 | ||
7e8f55c1 | 10868 | case INTERFACE_NAMELESS: |
10869 | gfc_error ("Malformed GENERIC statement at %C"); | |
10870 | goto error; | |
10871 | break; | |
10872 | ||
a36eb9ee | 10873 | default: |
10874 | gcc_unreachable (); | |
10875 | } | |
3323e9b1 | 10876 | |
a36eb9ee | 10877 | /* Match the required =>. */ |
10878 | if (gfc_match (" =>") != MATCH_YES) | |
10879 | { | |
0d2b3c9c | 10880 | gfc_error ("Expected %<=>%> at %C"); |
a36eb9ee | 10881 | goto error; |
10882 | } | |
8db94b3b | 10883 | |
a36eb9ee | 10884 | /* Try to find existing GENERIC binding with this name / for this operator; |
10885 | if there is something, check that it is another GENERIC and then extend | |
10886 | it rather than building a new node. Otherwise, create it and put it | |
10887 | at the right position. */ | |
10888 | ||
10889 | switch (op_type) | |
10890 | { | |
9f732c4e | 10891 | case INTERFACE_DTIO: |
a36eb9ee | 10892 | case INTERFACE_USER_OP: |
10893 | case INTERFACE_GENERIC: | |
10894 | { | |
10895 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
10896 | gfc_symtree* st; | |
10897 | ||
10898 | st = gfc_find_symtree (is_op ? ns->tb_uop_root : ns->tb_sym_root, name); | |
f7b2c82b | 10899 | tb = st ? st->n.tb : NULL; |
a36eb9ee | 10900 | break; |
10901 | } | |
10902 | ||
10903 | case INTERFACE_INTRINSIC_OP: | |
10904 | tb = ns->tb_op[op]; | |
10905 | break; | |
10906 | ||
10907 | default: | |
10908 | gcc_unreachable (); | |
10909 | } | |
10910 | ||
10911 | if (tb) | |
10912 | { | |
3323e9b1 | 10913 | if (!tb->is_generic) |
e2f06a48 | 10914 | { |
a36eb9ee | 10915 | gcc_assert (op_type == INTERFACE_GENERIC); |
e2f06a48 | 10916 | gfc_error ("There's already a non-generic procedure with binding name" |
716da296 | 10917 | " %qs for the derived type %qs at %C", |
a36eb9ee | 10918 | bind_name, block->name); |
e2f06a48 | 10919 | goto error; |
10920 | } | |
10921 | ||
e2f06a48 | 10922 | if (tb->access != tbattr.access) |
10923 | { | |
10924 | gfc_error ("Binding at %C must have the same access as already" | |
716da296 | 10925 | " defined binding %qs", bind_name); |
e2f06a48 | 10926 | goto error; |
10927 | } | |
10928 | } | |
10929 | else | |
10930 | { | |
4a12b9ba | 10931 | tb = gfc_get_typebound_proc (NULL); |
e2f06a48 | 10932 | tb->where = gfc_current_locus; |
10933 | tb->access = tbattr.access; | |
10934 | tb->is_generic = 1; | |
10935 | tb->u.generic = NULL; | |
a36eb9ee | 10936 | |
10937 | switch (op_type) | |
10938 | { | |
9f732c4e | 10939 | case INTERFACE_DTIO: |
a36eb9ee | 10940 | case INTERFACE_GENERIC: |
10941 | case INTERFACE_USER_OP: | |
10942 | { | |
10943 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
f7b2c82b | 10944 | gfc_symtree* st = gfc_get_tbp_symtree (is_op ? &ns->tb_uop_root : |
10945 | &ns->tb_sym_root, name); | |
a36eb9ee | 10946 | gcc_assert (st); |
10947 | st->n.tb = tb; | |
10948 | ||
10949 | break; | |
10950 | } | |
8db94b3b | 10951 | |
a36eb9ee | 10952 | case INTERFACE_INTRINSIC_OP: |
10953 | ns->tb_op[op] = tb; | |
10954 | break; | |
10955 | ||
10956 | default: | |
10957 | gcc_unreachable (); | |
10958 | } | |
e2f06a48 | 10959 | } |
10960 | ||
10961 | /* Now, match all following names as specific targets. */ | |
10962 | do | |
10963 | { | |
10964 | gfc_symtree* target_st; | |
10965 | gfc_tbp_generic* target; | |
10966 | ||
10967 | m = gfc_match_name (name); | |
10968 | if (m == MATCH_ERROR) | |
10969 | goto error; | |
10970 | if (m == MATCH_NO) | |
10971 | { | |
10972 | gfc_error ("Expected specific binding name at %C"); | |
10973 | goto error; | |
10974 | } | |
10975 | ||
3323e9b1 | 10976 | target_st = gfc_get_tbp_symtree (&ns->tb_sym_root, name); |
e2f06a48 | 10977 | |
10978 | /* See if this is a duplicate specification. */ | |
10979 | for (target = tb->u.generic; target; target = target->next) | |
10980 | if (target_st == target->specific_st) | |
10981 | { | |
716da296 | 10982 | gfc_error ("%qs already defined as specific binding for the" |
10983 | " generic %qs at %C", name, bind_name); | |
e2f06a48 | 10984 | goto error; |
10985 | } | |
10986 | ||
e2f06a48 | 10987 | target = gfc_get_tbp_generic (); |
10988 | target->specific_st = target_st; | |
10989 | target->specific = NULL; | |
10990 | target->next = tb->u.generic; | |
5c0f7d99 | 10991 | target->is_operator = ((op_type == INTERFACE_USER_OP) |
10992 | || (op_type == INTERFACE_INTRINSIC_OP)); | |
e2f06a48 | 10993 | tb->u.generic = target; |
10994 | } | |
10995 | while (gfc_match (" ,") == MATCH_YES); | |
10996 | ||
10997 | /* Here should be the end. */ | |
10998 | if (gfc_match_eos () != MATCH_YES) | |
10999 | { | |
11000 | gfc_error ("Junk after GENERIC binding at %C"); | |
11001 | goto error; | |
11002 | } | |
11003 | ||
11004 | return MATCH_YES; | |
11005 | ||
11006 | error: | |
11007 | return MATCH_ERROR; | |
11008 | } | |
11009 | ||
11010 | ||
223f0f57 | 11011 | /* Match a FINAL declaration inside a derived type. */ |
11012 | ||
11013 | match | |
11014 | gfc_match_final_decl (void) | |
11015 | { | |
11016 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
11017 | gfc_symbol* sym; | |
11018 | match m; | |
11019 | gfc_namespace* module_ns; | |
11020 | bool first, last; | |
7fd88f6e | 11021 | gfc_symbol* block; |
223f0f57 | 11022 | |
519651c1 | 11023 | if (gfc_current_form == FORM_FREE) |
11024 | { | |
11025 | char c = gfc_peek_ascii_char (); | |
11026 | if (!gfc_is_whitespace (c) && c != ':') | |
11027 | return MATCH_NO; | |
11028 | } | |
8db94b3b | 11029 | |
7fd88f6e | 11030 | if (gfc_state_stack->state != COMP_DERIVED_CONTAINS) |
223f0f57 | 11031 | { |
519651c1 | 11032 | if (gfc_current_form == FORM_FIXED) |
11033 | return MATCH_NO; | |
11034 | ||
223f0f57 | 11035 | gfc_error ("FINAL declaration at %C must be inside a derived type " |
7fd88f6e | 11036 | "CONTAINS section"); |
223f0f57 | 11037 | return MATCH_ERROR; |
11038 | } | |
11039 | ||
7fd88f6e | 11040 | block = gfc_state_stack->previous->sym; |
11041 | gcc_assert (block); | |
223f0f57 | 11042 | |
7fd88f6e | 11043 | if (!gfc_state_stack->previous || !gfc_state_stack->previous->previous |
11044 | || gfc_state_stack->previous->previous->state != COMP_MODULE) | |
223f0f57 | 11045 | { |
11046 | gfc_error ("Derived type declaration with FINAL at %C must be in the" | |
11047 | " specification part of a MODULE"); | |
11048 | return MATCH_ERROR; | |
11049 | } | |
11050 | ||
11051 | module_ns = gfc_current_ns; | |
11052 | gcc_assert (module_ns); | |
11053 | gcc_assert (module_ns->proc_name->attr.flavor == FL_MODULE); | |
11054 | ||
11055 | /* Match optional ::, don't care about MATCH_YES or MATCH_NO. */ | |
11056 | if (gfc_match (" ::") == MATCH_ERROR) | |
11057 | return MATCH_ERROR; | |
11058 | ||
11059 | /* Match the sequence of procedure names. */ | |
11060 | first = true; | |
11061 | last = false; | |
11062 | do | |
11063 | { | |
11064 | gfc_finalizer* f; | |
11065 | ||
11066 | if (first && gfc_match_eos () == MATCH_YES) | |
11067 | { | |
11068 | gfc_error ("Empty FINAL at %C"); | |
11069 | return MATCH_ERROR; | |
11070 | } | |
11071 | ||
11072 | m = gfc_match_name (name); | |
11073 | if (m == MATCH_NO) | |
11074 | { | |
11075 | gfc_error ("Expected module procedure name at %C"); | |
11076 | return MATCH_ERROR; | |
11077 | } | |
11078 | else if (m != MATCH_YES) | |
11079 | return MATCH_ERROR; | |
11080 | ||
11081 | if (gfc_match_eos () == MATCH_YES) | |
11082 | last = true; | |
11083 | if (!last && gfc_match_char (',') != MATCH_YES) | |
11084 | { | |
0d2b3c9c | 11085 | gfc_error ("Expected %<,%> at %C"); |
223f0f57 | 11086 | return MATCH_ERROR; |
11087 | } | |
11088 | ||
11089 | if (gfc_get_symbol (name, module_ns, &sym)) | |
11090 | { | |
716da296 | 11091 | gfc_error ("Unknown procedure name %qs at %C", name); |
223f0f57 | 11092 | return MATCH_ERROR; |
11093 | } | |
11094 | ||
11095 | /* Mark the symbol as module procedure. */ | |
11096 | if (sym->attr.proc != PROC_MODULE | |
60e19868 | 11097 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
223f0f57 | 11098 | return MATCH_ERROR; |
11099 | ||
11100 | /* Check if we already have this symbol in the list, this is an error. */ | |
7fd88f6e | 11101 | for (f = block->f2k_derived->finalizers; f; f = f->next) |
e449e4dd | 11102 | if (f->proc_sym == sym) |
223f0f57 | 11103 | { |
c2a4993a | 11104 | gfc_error ("%qs at %C is already defined as FINAL procedure", |
223f0f57 | 11105 | name); |
11106 | return MATCH_ERROR; | |
11107 | } | |
11108 | ||
11109 | /* Add this symbol to the list of finalizers. */ | |
7fd88f6e | 11110 | gcc_assert (block->f2k_derived); |
c77c84dd | 11111 | sym->refs++; |
48d8ad5a | 11112 | f = XCNEW (gfc_finalizer); |
e449e4dd | 11113 | f->proc_sym = sym; |
11114 | f->proc_tree = NULL; | |
223f0f57 | 11115 | f->where = gfc_current_locus; |
7fd88f6e | 11116 | f->next = block->f2k_derived->finalizers; |
11117 | block->f2k_derived->finalizers = f; | |
223f0f57 | 11118 | |
11119 | first = false; | |
11120 | } | |
11121 | while (!last); | |
11122 | ||
11123 | return MATCH_YES; | |
11124 | } | |
36b0a1b0 | 11125 | |
11126 | ||
11127 | const ext_attr_t ext_attr_list[] = { | |
fa76a552 | 11128 | { "dllimport", EXT_ATTR_DLLIMPORT, "dllimport" }, |
11129 | { "dllexport", EXT_ATTR_DLLEXPORT, "dllexport" }, | |
11130 | { "cdecl", EXT_ATTR_CDECL, "cdecl" }, | |
11131 | { "stdcall", EXT_ATTR_STDCALL, "stdcall" }, | |
11132 | { "fastcall", EXT_ATTR_FASTCALL, "fastcall" }, | |
11133 | { "no_arg_check", EXT_ATTR_NO_ARG_CHECK, NULL }, | |
11134 | { NULL, EXT_ATTR_LAST, NULL } | |
36b0a1b0 | 11135 | }; |
11136 | ||
11137 | /* Match a !GCC$ ATTRIBUTES statement of the form: | |
11138 | !GCC$ ATTRIBUTES attribute-list :: var-name [, var-name] ... | |
11139 | When we come here, we have already matched the !GCC$ ATTRIBUTES string. | |
11140 | ||
11141 | TODO: We should support all GCC attributes using the same syntax for | |
11142 | the attribute list, i.e. the list in C | |
11143 | __attributes(( attribute-list )) | |
11144 | matches then | |
11145 | !GCC$ ATTRIBUTES attribute-list :: | |
11146 | Cf. c-parser.c's c_parser_attributes; the data can then directly be | |
11147 | saved into a TREE. | |
11148 | ||
11149 | As there is absolutely no risk of confusion, we should never return | |
11150 | MATCH_NO. */ | |
11151 | match | |
11152 | gfc_match_gcc_attributes (void) | |
8db94b3b | 11153 | { |
36b0a1b0 | 11154 | symbol_attribute attr; |
11155 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
11156 | unsigned id; | |
11157 | gfc_symbol *sym; | |
11158 | match m; | |
11159 | ||
11160 | gfc_clear_attr (&attr); | |
11161 | for(;;) | |
11162 | { | |
11163 | char ch; | |
11164 | ||
11165 | if (gfc_match_name (name) != MATCH_YES) | |
11166 | return MATCH_ERROR; | |
11167 | ||
11168 | for (id = 0; id < EXT_ATTR_LAST; id++) | |
11169 | if (strcmp (name, ext_attr_list[id].name) == 0) | |
11170 | break; | |
11171 | ||
11172 | if (id == EXT_ATTR_LAST) | |
11173 | { | |
11174 | gfc_error ("Unknown attribute in !GCC$ ATTRIBUTES statement at %C"); | |
11175 | return MATCH_ERROR; | |
11176 | } | |
11177 | ||
60e19868 | 11178 | if (!gfc_add_ext_attribute (&attr, (ext_attr_id_t)id, &gfc_current_locus)) |
36b0a1b0 | 11179 | return MATCH_ERROR; |
11180 | ||
11181 | gfc_gobble_whitespace (); | |
11182 | ch = gfc_next_ascii_char (); | |
11183 | if (ch == ':') | |
11184 | { | |
11185 | /* This is the successful exit condition for the loop. */ | |
11186 | if (gfc_next_ascii_char () == ':') | |
11187 | break; | |
11188 | } | |
11189 | ||
11190 | if (ch == ',') | |
11191 | continue; | |
11192 | ||
11193 | goto syntax; | |
11194 | } | |
11195 | ||
11196 | if (gfc_match_eos () == MATCH_YES) | |
11197 | goto syntax; | |
11198 | ||
11199 | for(;;) | |
11200 | { | |
11201 | m = gfc_match_name (name); | |
11202 | if (m != MATCH_YES) | |
11203 | return m; | |
11204 | ||
11205 | if (find_special (name, &sym, true)) | |
11206 | return MATCH_ERROR; | |
8db94b3b | 11207 | |
36b0a1b0 | 11208 | sym->attr.ext_attr |= attr.ext_attr; |
11209 | ||
11210 | if (gfc_match_eos () == MATCH_YES) | |
11211 | break; | |
11212 | ||
11213 | if (gfc_match_char (',') != MATCH_YES) | |
11214 | goto syntax; | |
11215 | } | |
11216 | ||
11217 | return MATCH_YES; | |
11218 | ||
11219 | syntax: | |
11220 | gfc_error ("Syntax error in !GCC$ ATTRIBUTES statement at %C"); | |
11221 | return MATCH_ERROR; | |
11222 | } | |
82841c8f | 11223 | |
11224 | ||
11225 | /* Match a !GCC$ UNROLL statement of the form: | |
11226 | !GCC$ UNROLL n | |
11227 | ||
11228 | The parameter n is the number of times we are supposed to unroll. | |
11229 | ||
11230 | When we come here, we have already matched the !GCC$ UNROLL string. */ | |
11231 | match | |
11232 | gfc_match_gcc_unroll (void) | |
11233 | { | |
11234 | int value; | |
11235 | ||
11236 | if (gfc_match_small_int (&value) == MATCH_YES) | |
11237 | { | |
11238 | if (value < 0 || value > USHRT_MAX) | |
11239 | { | |
11240 | gfc_error ("%<GCC unroll%> directive requires a" | |
11241 | " non-negative integral constant" | |
11242 | " less than or equal to %u at %C", | |
11243 | USHRT_MAX | |
11244 | ); | |
11245 | return MATCH_ERROR; | |
11246 | } | |
11247 | if (gfc_match_eos () == MATCH_YES) | |
11248 | { | |
11249 | directive_unroll = value == 0 ? 1 : value; | |
11250 | return MATCH_YES; | |
11251 | } | |
11252 | } | |
11253 | ||
11254 | gfc_error ("Syntax error in !GCC$ UNROLL directive at %C"); | |
11255 | return MATCH_ERROR; | |
11256 | } | |
f052211c | 11257 | |
11258 | /* Match a !GCC$ builtin (b) attributes simd flags form: | |
11259 | ||
11260 | The parameter b is name of a middle-end built-in. | |
11261 | Flags are one of: | |
11262 | - (empty) | |
11263 | - inbranch | |
11264 | - notinbranch | |
11265 | ||
11266 | When we come here, we have already matched the !GCC$ builtin string. */ | |
11267 | match | |
11268 | gfc_match_gcc_builtin (void) | |
11269 | { | |
11270 | char builtin[GFC_MAX_SYMBOL_LEN + 1]; | |
11271 | ||
11272 | if (gfc_match (" ( %n ) attributes simd", builtin) != MATCH_YES) | |
11273 | return MATCH_ERROR; | |
11274 | ||
11275 | gfc_simd_clause clause = SIMD_NONE; | |
11276 | if (gfc_match (" ( notinbranch ) ") == MATCH_YES) | |
11277 | clause = SIMD_NOTINBRANCH; | |
11278 | else if (gfc_match (" ( inbranch ) ") == MATCH_YES) | |
11279 | clause = SIMD_INBRANCH; | |
11280 | ||
11281 | if (gfc_vectorized_builtins == NULL) | |
11282 | gfc_vectorized_builtins = new hash_map<nofree_string_hash, int> (); | |
11283 | ||
11284 | char *r = XNEWVEC (char, strlen (builtin) + 32); | |
11285 | sprintf (r, "__builtin_%s", builtin); | |
11286 | ||
11287 | bool existed; | |
11288 | int &value = gfc_vectorized_builtins->get_or_insert (r, &existed); | |
11289 | value |= clause; | |
11290 | if (existed) | |
11291 | free (r); | |
11292 | ||
11293 | return MATCH_YES; | |
11294 | } |