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4ee9c684 | 1 | /* Declaration statement matcher |
3aea1f79 | 2 | Copyright (C) 2002-2014 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" |
4ee9c684 | 24 | #include "gfortran.h" |
25 | #include "match.h" | |
26 | #include "parse.h" | |
6f092e31 | 27 | #include "flags.h" |
126387b5 | 28 | #include "constructor.h" |
7b2060ba | 29 | #include "tree.h" |
9ed99284 | 30 | #include "stringpool.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; | |
57 | ||
c5d33754 | 58 | /* The current binding label (if any). */ |
1d8a57d8 | 59 | static const char* curr_binding_label; |
c5d33754 | 60 | /* Need to know how many identifiers are on the current data declaration |
61 | line in case we're given the BIND(C) attribute with a NAME= specifier. */ | |
62 | static int num_idents_on_line; | |
63 | /* Need to know if a NAME= specifier was found during gfc_match_bind_c so we | |
64 | can supply a name if the curr_binding_label is nil and NAME= was not. */ | |
65 | static int has_name_equals = 0; | |
66 | ||
3b6a4b41 | 67 | /* Initializer of the previous enumerator. */ |
68 | ||
69 | static gfc_expr *last_initializer; | |
70 | ||
71 | /* History of all the enumerators is maintained, so that | |
72 | kind values of all the enumerators could be updated depending | |
73 | upon the maximum initialized value. */ | |
74 | ||
75 | typedef struct enumerator_history | |
76 | { | |
77 | gfc_symbol *sym; | |
78 | gfc_expr *initializer; | |
79 | struct enumerator_history *next; | |
80 | } | |
81 | enumerator_history; | |
82 | ||
83 | /* Header of enum history chain. */ | |
84 | ||
85 | static enumerator_history *enum_history = NULL; | |
86 | ||
87 | /* Pointer of enum history node containing largest initializer. */ | |
88 | ||
89 | static enumerator_history *max_enum = NULL; | |
90 | ||
4ee9c684 | 91 | /* gfc_new_block points to the symbol of a newly matched block. */ |
92 | ||
93 | gfc_symbol *gfc_new_block; | |
94 | ||
077932f9 | 95 | bool gfc_matching_function; |
67a51c8e | 96 | |
4ee9c684 | 97 | |
b4f45d02 | 98 | /********************* DATA statement subroutines *********************/ |
99 | ||
1bfea7e8 | 100 | static bool in_match_data = false; |
101 | ||
102 | bool | |
103 | gfc_in_match_data (void) | |
104 | { | |
105 | return in_match_data; | |
106 | } | |
107 | ||
cbbac028 | 108 | static void |
109 | set_in_match_data (bool set_value) | |
1bfea7e8 | 110 | { |
111 | in_match_data = set_value; | |
112 | } | |
113 | ||
b4f45d02 | 114 | /* Free a gfc_data_variable structure and everything beneath it. */ |
115 | ||
116 | static void | |
1a9745d2 | 117 | free_variable (gfc_data_variable *p) |
b4f45d02 | 118 | { |
119 | gfc_data_variable *q; | |
120 | ||
121 | for (; p; p = q) | |
122 | { | |
123 | q = p->next; | |
124 | gfc_free_expr (p->expr); | |
125 | gfc_free_iterator (&p->iter, 0); | |
126 | free_variable (p->list); | |
434f0922 | 127 | free (p); |
b4f45d02 | 128 | } |
129 | } | |
130 | ||
131 | ||
132 | /* Free a gfc_data_value structure and everything beneath it. */ | |
133 | ||
134 | static void | |
1a9745d2 | 135 | free_value (gfc_data_value *p) |
b4f45d02 | 136 | { |
137 | gfc_data_value *q; | |
138 | ||
139 | for (; p; p = q) | |
140 | { | |
141 | q = p->next; | |
2d4466dd | 142 | mpz_clear (p->repeat); |
b4f45d02 | 143 | gfc_free_expr (p->expr); |
434f0922 | 144 | free (p); |
b4f45d02 | 145 | } |
146 | } | |
147 | ||
148 | ||
149 | /* Free a list of gfc_data structures. */ | |
150 | ||
151 | void | |
1a9745d2 | 152 | gfc_free_data (gfc_data *p) |
b4f45d02 | 153 | { |
154 | gfc_data *q; | |
155 | ||
156 | for (; p; p = q) | |
157 | { | |
158 | q = p->next; | |
b4f45d02 | 159 | free_variable (p->var); |
160 | free_value (p->value); | |
434f0922 | 161 | free (p); |
b4f45d02 | 162 | } |
163 | } | |
164 | ||
165 | ||
af29c1f0 | 166 | /* Free all data in a namespace. */ |
1a9745d2 | 167 | |
af29c1f0 | 168 | static void |
f6d0e37a | 169 | gfc_free_data_all (gfc_namespace *ns) |
af29c1f0 | 170 | { |
171 | gfc_data *d; | |
172 | ||
173 | for (;ns->data;) | |
174 | { | |
175 | d = ns->data->next; | |
434f0922 | 176 | free (ns->data); |
af29c1f0 | 177 | ns->data = d; |
178 | } | |
179 | } | |
180 | ||
181 | ||
b4f45d02 | 182 | static match var_element (gfc_data_variable *); |
183 | ||
184 | /* Match a list of variables terminated by an iterator and a right | |
185 | parenthesis. */ | |
186 | ||
187 | static match | |
1a9745d2 | 188 | var_list (gfc_data_variable *parent) |
b4f45d02 | 189 | { |
190 | gfc_data_variable *tail, var; | |
191 | match m; | |
192 | ||
193 | m = var_element (&var); | |
194 | if (m == MATCH_ERROR) | |
195 | return MATCH_ERROR; | |
196 | if (m == MATCH_NO) | |
197 | goto syntax; | |
198 | ||
199 | tail = gfc_get_data_variable (); | |
200 | *tail = var; | |
201 | ||
202 | parent->list = tail; | |
203 | ||
204 | for (;;) | |
205 | { | |
206 | if (gfc_match_char (',') != MATCH_YES) | |
207 | goto syntax; | |
208 | ||
209 | m = gfc_match_iterator (&parent->iter, 1); | |
210 | if (m == MATCH_YES) | |
211 | break; | |
212 | if (m == MATCH_ERROR) | |
213 | return MATCH_ERROR; | |
214 | ||
215 | m = var_element (&var); | |
216 | if (m == MATCH_ERROR) | |
217 | return MATCH_ERROR; | |
218 | if (m == MATCH_NO) | |
219 | goto syntax; | |
220 | ||
221 | tail->next = gfc_get_data_variable (); | |
222 | tail = tail->next; | |
223 | ||
224 | *tail = var; | |
225 | } | |
226 | ||
227 | if (gfc_match_char (')') != MATCH_YES) | |
228 | goto syntax; | |
229 | return MATCH_YES; | |
230 | ||
231 | syntax: | |
232 | gfc_syntax_error (ST_DATA); | |
233 | return MATCH_ERROR; | |
234 | } | |
235 | ||
236 | ||
237 | /* Match a single element in a data variable list, which can be a | |
238 | variable-iterator list. */ | |
239 | ||
240 | static match | |
c1977dbe | 241 | var_element (gfc_data_variable *new_var) |
b4f45d02 | 242 | { |
243 | match m; | |
244 | gfc_symbol *sym; | |
245 | ||
c1977dbe | 246 | memset (new_var, 0, sizeof (gfc_data_variable)); |
b4f45d02 | 247 | |
248 | if (gfc_match_char ('(') == MATCH_YES) | |
c1977dbe | 249 | return var_list (new_var); |
b4f45d02 | 250 | |
c1977dbe | 251 | m = gfc_match_variable (&new_var->expr, 0); |
b4f45d02 | 252 | if (m != MATCH_YES) |
253 | return m; | |
254 | ||
c1977dbe | 255 | sym = new_var->expr->symtree->n.sym; |
b4f45d02 | 256 | |
40de255b | 257 | /* Symbol should already have an associated type. */ |
60e19868 | 258 | if (!gfc_check_symbol_typed (sym, gfc_current_ns, false, gfc_current_locus)) |
40de255b | 259 | return MATCH_ERROR; |
260 | ||
1a9745d2 | 261 | if (!sym->attr.function && gfc_current_ns->parent |
262 | && gfc_current_ns->parent == sym->ns) | |
b4f45d02 | 263 | { |
c8df3e9c | 264 | gfc_error ("Host associated variable '%s' may not be in the DATA " |
7698a624 | 265 | "statement at %C", sym->name); |
b4f45d02 | 266 | return MATCH_ERROR; |
267 | } | |
268 | ||
c8df3e9c | 269 | if (gfc_current_state () != COMP_BLOCK_DATA |
1a9745d2 | 270 | && sym->attr.in_common |
60e19868 | 271 | && !gfc_notify_std (GFC_STD_GNU, "initialization of " |
272 | "common block variable '%s' in DATA statement at %C", | |
273 | sym->name)) | |
c8df3e9c | 274 | return MATCH_ERROR; |
b4f45d02 | 275 | |
60e19868 | 276 | if (!gfc_add_data (&sym->attr, sym->name, &new_var->expr->where)) |
b4f45d02 | 277 | return MATCH_ERROR; |
278 | ||
279 | return MATCH_YES; | |
280 | } | |
281 | ||
282 | ||
283 | /* Match the top-level list of data variables. */ | |
284 | ||
285 | static match | |
1a9745d2 | 286 | top_var_list (gfc_data *d) |
b4f45d02 | 287 | { |
c1977dbe | 288 | gfc_data_variable var, *tail, *new_var; |
b4f45d02 | 289 | match m; |
290 | ||
291 | tail = NULL; | |
292 | ||
293 | for (;;) | |
294 | { | |
295 | m = var_element (&var); | |
296 | if (m == MATCH_NO) | |
297 | goto syntax; | |
298 | if (m == MATCH_ERROR) | |
299 | return MATCH_ERROR; | |
300 | ||
c1977dbe | 301 | new_var = gfc_get_data_variable (); |
302 | *new_var = var; | |
b4f45d02 | 303 | |
304 | if (tail == NULL) | |
c1977dbe | 305 | d->var = new_var; |
b4f45d02 | 306 | else |
c1977dbe | 307 | tail->next = new_var; |
b4f45d02 | 308 | |
c1977dbe | 309 | tail = new_var; |
b4f45d02 | 310 | |
311 | if (gfc_match_char ('/') == MATCH_YES) | |
312 | break; | |
313 | if (gfc_match_char (',') != MATCH_YES) | |
314 | goto syntax; | |
315 | } | |
316 | ||
317 | return MATCH_YES; | |
318 | ||
319 | syntax: | |
320 | gfc_syntax_error (ST_DATA); | |
af29c1f0 | 321 | gfc_free_data_all (gfc_current_ns); |
b4f45d02 | 322 | return MATCH_ERROR; |
323 | } | |
324 | ||
325 | ||
326 | static match | |
1a9745d2 | 327 | match_data_constant (gfc_expr **result) |
b4f45d02 | 328 | { |
329 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c2958b6b | 330 | gfc_symbol *sym, *dt_sym = NULL; |
b4f45d02 | 331 | gfc_expr *expr; |
332 | match m; | |
096d4ad9 | 333 | locus old_loc; |
b4f45d02 | 334 | |
335 | m = gfc_match_literal_constant (&expr, 1); | |
336 | if (m == MATCH_YES) | |
337 | { | |
338 | *result = expr; | |
339 | return MATCH_YES; | |
340 | } | |
341 | ||
342 | if (m == MATCH_ERROR) | |
343 | return MATCH_ERROR; | |
344 | ||
345 | m = gfc_match_null (result); | |
346 | if (m != MATCH_NO) | |
347 | return m; | |
348 | ||
096d4ad9 | 349 | old_loc = gfc_current_locus; |
350 | ||
351 | /* Should this be a structure component, try to match it | |
352 | before matching a name. */ | |
353 | m = gfc_match_rvalue (result); | |
354 | if (m == MATCH_ERROR) | |
355 | return m; | |
356 | ||
357 | if (m == MATCH_YES && (*result)->expr_type == EXPR_STRUCTURE) | |
358 | { | |
60e19868 | 359 | if (!gfc_simplify_expr (*result, 0)) |
096d4ad9 | 360 | m = MATCH_ERROR; |
361 | return m; | |
362 | } | |
021ff494 | 363 | else if (m == MATCH_YES) |
364 | gfc_free_expr (*result); | |
096d4ad9 | 365 | |
366 | gfc_current_locus = old_loc; | |
367 | ||
b4f45d02 | 368 | m = gfc_match_name (name); |
369 | if (m != MATCH_YES) | |
370 | return m; | |
371 | ||
372 | if (gfc_find_symbol (name, NULL, 1, &sym)) | |
373 | return MATCH_ERROR; | |
374 | ||
c2958b6b | 375 | if (sym && sym->attr.generic) |
376 | dt_sym = gfc_find_dt_in_generic (sym); | |
377 | ||
b4f45d02 | 378 | if (sym == NULL |
c2958b6b | 379 | || (sym->attr.flavor != FL_PARAMETER |
380 | && (!dt_sym || dt_sym->attr.flavor != FL_DERIVED))) | |
b4f45d02 | 381 | { |
382 | gfc_error ("Symbol '%s' must be a PARAMETER in DATA statement at %C", | |
383 | name); | |
384 | return MATCH_ERROR; | |
385 | } | |
c2958b6b | 386 | else if (dt_sym && dt_sym->attr.flavor == FL_DERIVED) |
387 | return gfc_match_structure_constructor (dt_sym, result); | |
b4f45d02 | 388 | |
f0a51891 | 389 | /* Check to see if the value is an initialization array expression. */ |
390 | if (sym->value->expr_type == EXPR_ARRAY) | |
391 | { | |
392 | gfc_current_locus = old_loc; | |
393 | ||
394 | m = gfc_match_init_expr (result); | |
395 | if (m == MATCH_ERROR) | |
396 | return m; | |
397 | ||
398 | if (m == MATCH_YES) | |
399 | { | |
60e19868 | 400 | if (!gfc_simplify_expr (*result, 0)) |
f0a51891 | 401 | m = MATCH_ERROR; |
402 | ||
403 | if ((*result)->expr_type == EXPR_CONSTANT) | |
404 | return m; | |
405 | else | |
406 | { | |
407 | gfc_error ("Invalid initializer %s in Data statement at %C", name); | |
408 | return MATCH_ERROR; | |
409 | } | |
410 | } | |
411 | } | |
412 | ||
b4f45d02 | 413 | *result = gfc_copy_expr (sym->value); |
414 | return MATCH_YES; | |
415 | } | |
416 | ||
417 | ||
418 | /* Match a list of values in a DATA statement. The leading '/' has | |
419 | already been seen at this point. */ | |
420 | ||
421 | static match | |
1a9745d2 | 422 | top_val_list (gfc_data *data) |
b4f45d02 | 423 | { |
c1977dbe | 424 | gfc_data_value *new_val, *tail; |
b4f45d02 | 425 | gfc_expr *expr; |
b4f45d02 | 426 | match m; |
427 | ||
428 | tail = NULL; | |
429 | ||
430 | for (;;) | |
431 | { | |
432 | m = match_data_constant (&expr); | |
433 | if (m == MATCH_NO) | |
434 | goto syntax; | |
435 | if (m == MATCH_ERROR) | |
436 | return MATCH_ERROR; | |
437 | ||
c1977dbe | 438 | new_val = gfc_get_data_value (); |
439 | mpz_init (new_val->repeat); | |
b4f45d02 | 440 | |
441 | if (tail == NULL) | |
c1977dbe | 442 | data->value = new_val; |
b4f45d02 | 443 | else |
c1977dbe | 444 | tail->next = new_val; |
b4f45d02 | 445 | |
c1977dbe | 446 | tail = new_val; |
b4f45d02 | 447 | |
448 | if (expr->ts.type != BT_INTEGER || gfc_match_char ('*') != MATCH_YES) | |
449 | { | |
450 | tail->expr = expr; | |
7d74abfd | 451 | mpz_set_ui (tail->repeat, 1); |
b4f45d02 | 452 | } |
453 | else | |
454 | { | |
021ff494 | 455 | mpz_set (tail->repeat, expr->value.integer); |
b4f45d02 | 456 | gfc_free_expr (expr); |
b4f45d02 | 457 | |
458 | m = match_data_constant (&tail->expr); | |
459 | if (m == MATCH_NO) | |
460 | goto syntax; | |
461 | if (m == MATCH_ERROR) | |
462 | return MATCH_ERROR; | |
463 | } | |
464 | ||
465 | if (gfc_match_char ('/') == MATCH_YES) | |
466 | break; | |
467 | if (gfc_match_char (',') == MATCH_NO) | |
468 | goto syntax; | |
469 | } | |
470 | ||
471 | return MATCH_YES; | |
472 | ||
473 | syntax: | |
474 | gfc_syntax_error (ST_DATA); | |
af29c1f0 | 475 | gfc_free_data_all (gfc_current_ns); |
b4f45d02 | 476 | return MATCH_ERROR; |
477 | } | |
478 | ||
479 | ||
480 | /* Matches an old style initialization. */ | |
481 | ||
482 | static match | |
483 | match_old_style_init (const char *name) | |
484 | { | |
485 | match m; | |
486 | gfc_symtree *st; | |
344b937e | 487 | gfc_symbol *sym; |
b4f45d02 | 488 | gfc_data *newdata; |
489 | ||
490 | /* Set up data structure to hold initializers. */ | |
491 | gfc_find_sym_tree (name, NULL, 0, &st); | |
344b937e | 492 | sym = st->n.sym; |
493 | ||
b4f45d02 | 494 | newdata = gfc_get_data (); |
495 | newdata->var = gfc_get_data_variable (); | |
496 | newdata->var->expr = gfc_get_variable_expr (st); | |
5aed5db3 | 497 | newdata->where = gfc_current_locus; |
b4f45d02 | 498 | |
f6d0e37a | 499 | /* Match initial value list. This also eats the terminal '/'. */ |
b4f45d02 | 500 | m = top_val_list (newdata); |
501 | if (m != MATCH_YES) | |
502 | { | |
434f0922 | 503 | free (newdata); |
b4f45d02 | 504 | return m; |
505 | } | |
506 | ||
507 | if (gfc_pure (NULL)) | |
508 | { | |
509 | gfc_error ("Initialization at %C is not allowed in a PURE procedure"); | |
434f0922 | 510 | free (newdata); |
b4f45d02 | 511 | return MATCH_ERROR; |
512 | } | |
c77badf3 | 513 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
8b0a2e85 | 514 | |
344b937e | 515 | /* Mark the variable as having appeared in a data statement. */ |
60e19868 | 516 | if (!gfc_add_data (&sym->attr, sym->name, &sym->declared_at)) |
344b937e | 517 | { |
434f0922 | 518 | free (newdata); |
344b937e | 519 | return MATCH_ERROR; |
520 | } | |
521 | ||
b4f45d02 | 522 | /* Chain in namespace list of DATA initializers. */ |
523 | newdata->next = gfc_current_ns->data; | |
524 | gfc_current_ns->data = newdata; | |
525 | ||
526 | return m; | |
527 | } | |
528 | ||
1a9745d2 | 529 | |
b4f45d02 | 530 | /* Match the stuff following a DATA statement. If ERROR_FLAG is set, |
39fca56b | 531 | we are matching a DATA statement and are therefore issuing an error |
e14bee04 | 532 | if we encounter something unexpected, if not, we're trying to match |
fe06c0d5 | 533 | an old-style initialization expression of the form INTEGER I /2/. */ |
b4f45d02 | 534 | |
535 | match | |
536 | gfc_match_data (void) | |
537 | { | |
c1977dbe | 538 | gfc_data *new_data; |
b4f45d02 | 539 | match m; |
540 | ||
cbbac028 | 541 | set_in_match_data (true); |
1bfea7e8 | 542 | |
b4f45d02 | 543 | for (;;) |
544 | { | |
c1977dbe | 545 | new_data = gfc_get_data (); |
546 | new_data->where = gfc_current_locus; | |
b4f45d02 | 547 | |
c1977dbe | 548 | m = top_var_list (new_data); |
b4f45d02 | 549 | if (m != MATCH_YES) |
550 | goto cleanup; | |
551 | ||
c1977dbe | 552 | m = top_val_list (new_data); |
b4f45d02 | 553 | if (m != MATCH_YES) |
554 | goto cleanup; | |
555 | ||
c1977dbe | 556 | new_data->next = gfc_current_ns->data; |
557 | gfc_current_ns->data = new_data; | |
b4f45d02 | 558 | |
559 | if (gfc_match_eos () == MATCH_YES) | |
560 | break; | |
561 | ||
562 | gfc_match_char (','); /* Optional comma */ | |
563 | } | |
564 | ||
cbbac028 | 565 | set_in_match_data (false); |
1bfea7e8 | 566 | |
b4f45d02 | 567 | if (gfc_pure (NULL)) |
568 | { | |
569 | gfc_error ("DATA statement at %C is not allowed in a PURE procedure"); | |
570 | return MATCH_ERROR; | |
571 | } | |
c77badf3 | 572 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
8b0a2e85 | 573 | |
b4f45d02 | 574 | return MATCH_YES; |
575 | ||
576 | cleanup: | |
cbbac028 | 577 | set_in_match_data (false); |
c1977dbe | 578 | gfc_free_data (new_data); |
b4f45d02 | 579 | return MATCH_ERROR; |
580 | } | |
581 | ||
582 | ||
583 | /************************ Declaration statements *********************/ | |
584 | ||
e97ac7c0 | 585 | |
df084314 | 586 | /* Auxiliary function to merge DIMENSION and CODIMENSION array specs. */ |
e97ac7c0 | 587 | |
60e19868 | 588 | static bool |
e97ac7c0 | 589 | merge_array_spec (gfc_array_spec *from, gfc_array_spec *to, bool copy) |
590 | { | |
591 | int i; | |
592 | ||
9b58b4c7 | 593 | if ((from->type == AS_ASSUMED_RANK && to->corank) |
594 | || (to->type == AS_ASSUMED_RANK && from->corank)) | |
595 | { | |
596 | gfc_error ("The assumed-rank array at %C shall not have a codimension"); | |
60e19868 | 597 | return false; |
9b58b4c7 | 598 | } |
f00f6dd6 | 599 | |
e97ac7c0 | 600 | if (to->rank == 0 && from->rank > 0) |
601 | { | |
602 | to->rank = from->rank; | |
603 | to->type = from->type; | |
604 | to->cray_pointee = from->cray_pointee; | |
605 | to->cp_was_assumed = from->cp_was_assumed; | |
606 | ||
607 | for (i = 0; i < to->corank; i++) | |
608 | { | |
609 | to->lower[from->rank + i] = to->lower[i]; | |
610 | to->upper[from->rank + i] = to->upper[i]; | |
611 | } | |
612 | for (i = 0; i < from->rank; i++) | |
613 | { | |
614 | if (copy) | |
615 | { | |
616 | to->lower[i] = gfc_copy_expr (from->lower[i]); | |
617 | to->upper[i] = gfc_copy_expr (from->upper[i]); | |
618 | } | |
619 | else | |
620 | { | |
621 | to->lower[i] = from->lower[i]; | |
622 | to->upper[i] = from->upper[i]; | |
623 | } | |
624 | } | |
625 | } | |
626 | else if (to->corank == 0 && from->corank > 0) | |
627 | { | |
628 | to->corank = from->corank; | |
629 | to->cotype = from->cotype; | |
630 | ||
631 | for (i = 0; i < from->corank; i++) | |
632 | { | |
633 | if (copy) | |
634 | { | |
635 | to->lower[to->rank + i] = gfc_copy_expr (from->lower[i]); | |
636 | to->upper[to->rank + i] = gfc_copy_expr (from->upper[i]); | |
637 | } | |
638 | else | |
639 | { | |
640 | to->lower[to->rank + i] = from->lower[i]; | |
641 | to->upper[to->rank + i] = from->upper[i]; | |
642 | } | |
643 | } | |
644 | } | |
9b58b4c7 | 645 | |
60e19868 | 646 | return true; |
e97ac7c0 | 647 | } |
648 | ||
649 | ||
4ee9c684 | 650 | /* Match an intent specification. Since this can only happen after an |
651 | INTENT word, a legal intent-spec must follow. */ | |
652 | ||
653 | static sym_intent | |
654 | match_intent_spec (void) | |
655 | { | |
656 | ||
657 | if (gfc_match (" ( in out )") == MATCH_YES) | |
658 | return INTENT_INOUT; | |
659 | if (gfc_match (" ( in )") == MATCH_YES) | |
660 | return INTENT_IN; | |
661 | if (gfc_match (" ( out )") == MATCH_YES) | |
662 | return INTENT_OUT; | |
663 | ||
664 | gfc_error ("Bad INTENT specification at %C"); | |
665 | return INTENT_UNKNOWN; | |
666 | } | |
667 | ||
668 | ||
669 | /* Matches a character length specification, which is either a | |
3e715c81 | 670 | specification expression, '*', or ':'. */ |
4ee9c684 | 671 | |
672 | static match | |
3e715c81 | 673 | char_len_param_value (gfc_expr **expr, bool *deferred) |
4ee9c684 | 674 | { |
294d58d3 | 675 | match m; |
676 | ||
3e715c81 | 677 | *expr = NULL; |
678 | *deferred = false; | |
679 | ||
4ee9c684 | 680 | if (gfc_match_char ('*') == MATCH_YES) |
3e715c81 | 681 | return MATCH_YES; |
682 | ||
683 | if (gfc_match_char (':') == MATCH_YES) | |
4ee9c684 | 684 | { |
60e19868 | 685 | if (!gfc_notify_std (GFC_STD_F2003, "deferred type " |
686 | "parameter at %C")) | |
3e715c81 | 687 | return MATCH_ERROR; |
688 | ||
689 | *deferred = true; | |
690 | ||
4ee9c684 | 691 | return MATCH_YES; |
692 | } | |
693 | ||
294d58d3 | 694 | m = gfc_match_expr (expr); |
40de255b | 695 | |
696 | if (m == MATCH_YES | |
60e19868 | 697 | && !gfc_expr_check_typed (*expr, gfc_current_ns, false)) |
40de255b | 698 | return MATCH_ERROR; |
699 | ||
294d58d3 | 700 | if (m == MATCH_YES && (*expr)->expr_type == EXPR_FUNCTION) |
701 | { | |
702 | if ((*expr)->value.function.actual | |
703 | && (*expr)->value.function.actual->expr->symtree) | |
704 | { | |
705 | gfc_expr *e; | |
706 | e = (*expr)->value.function.actual->expr; | |
707 | if (e->symtree->n.sym->attr.flavor == FL_PROCEDURE | |
708 | && e->expr_type == EXPR_VARIABLE) | |
709 | { | |
710 | if (e->symtree->n.sym->ts.type == BT_UNKNOWN) | |
711 | goto syntax; | |
712 | if (e->symtree->n.sym->ts.type == BT_CHARACTER | |
eeebe20b | 713 | && e->symtree->n.sym->ts.u.cl |
714 | && e->symtree->n.sym->ts.u.cl->length->ts.type == BT_UNKNOWN) | |
294d58d3 | 715 | goto syntax; |
716 | } | |
717 | } | |
718 | } | |
719 | return m; | |
720 | ||
721 | syntax: | |
722 | gfc_error ("Conflict in attributes of function argument at %C"); | |
723 | return MATCH_ERROR; | |
4ee9c684 | 724 | } |
725 | ||
726 | ||
727 | /* A character length is a '*' followed by a literal integer or a | |
728 | char_len_param_value in parenthesis. */ | |
729 | ||
730 | static match | |
ae0426ce | 731 | match_char_length (gfc_expr **expr, bool *deferred, bool obsolescent_check) |
4ee9c684 | 732 | { |
3bd3b616 | 733 | int length; |
4ee9c684 | 734 | match m; |
735 | ||
8db94b3b | 736 | *deferred = false; |
4ee9c684 | 737 | m = gfc_match_char ('*'); |
738 | if (m != MATCH_YES) | |
739 | return m; | |
740 | ||
3bd3b616 | 741 | m = gfc_match_small_literal_int (&length, NULL); |
4ee9c684 | 742 | if (m == MATCH_ERROR) |
743 | return m; | |
744 | ||
745 | if (m == MATCH_YES) | |
746 | { | |
ae0426ce | 747 | if (obsolescent_check |
60e19868 | 748 | && !gfc_notify_std (GFC_STD_F95_OBS, "Old-style character length at %C")) |
8e9b41f0 | 749 | return MATCH_ERROR; |
126387b5 | 750 | *expr = gfc_get_int_expr (gfc_default_integer_kind, NULL, length); |
4ee9c684 | 751 | return m; |
752 | } | |
753 | ||
754 | if (gfc_match_char ('(') == MATCH_NO) | |
755 | goto syntax; | |
756 | ||
3e715c81 | 757 | m = char_len_param_value (expr, deferred); |
077932f9 | 758 | if (m != MATCH_YES && gfc_matching_function) |
759 | { | |
760 | gfc_undo_symbols (); | |
761 | m = MATCH_YES; | |
762 | } | |
763 | ||
4ee9c684 | 764 | if (m == MATCH_ERROR) |
765 | return m; | |
766 | if (m == MATCH_NO) | |
767 | goto syntax; | |
768 | ||
769 | if (gfc_match_char (')') == MATCH_NO) | |
770 | { | |
771 | gfc_free_expr (*expr); | |
772 | *expr = NULL; | |
773 | goto syntax; | |
774 | } | |
775 | ||
776 | return MATCH_YES; | |
777 | ||
778 | syntax: | |
779 | gfc_error ("Syntax error in character length specification at %C"); | |
780 | return MATCH_ERROR; | |
781 | } | |
782 | ||
783 | ||
ee893be6 | 784 | /* Special subroutine for finding a symbol. Check if the name is found |
785 | in the current name space. If not, and we're compiling a function or | |
786 | subroutine and the parent compilation unit is an interface, then check | |
787 | to see if the name we've been given is the name of the interface | |
788 | (located in another namespace). */ | |
4ee9c684 | 789 | |
790 | static int | |
36b0a1b0 | 791 | find_special (const char *name, gfc_symbol **result, bool allow_subroutine) |
4ee9c684 | 792 | { |
793 | gfc_state_data *s; | |
36b0a1b0 | 794 | gfc_symtree *st; |
ee893be6 | 795 | int i; |
4ee9c684 | 796 | |
36b0a1b0 | 797 | i = gfc_get_sym_tree (name, NULL, &st, allow_subroutine); |
e14bee04 | 798 | if (i == 0) |
36b0a1b0 | 799 | { |
800 | *result = st ? st->n.sym : NULL; | |
801 | goto end; | |
802 | } | |
e14bee04 | 803 | |
4ee9c684 | 804 | if (gfc_current_state () != COMP_SUBROUTINE |
805 | && gfc_current_state () != COMP_FUNCTION) | |
ee893be6 | 806 | goto end; |
4ee9c684 | 807 | |
808 | s = gfc_state_stack->previous; | |
809 | if (s == NULL) | |
ee893be6 | 810 | goto end; |
4ee9c684 | 811 | |
812 | if (s->state != COMP_INTERFACE) | |
ee893be6 | 813 | goto end; |
4ee9c684 | 814 | if (s->sym == NULL) |
f6d0e37a | 815 | goto end; /* Nameless interface. */ |
4ee9c684 | 816 | |
817 | if (strcmp (name, s->sym->name) == 0) | |
818 | { | |
819 | *result = s->sym; | |
820 | return 0; | |
821 | } | |
822 | ||
ee893be6 | 823 | end: |
824 | return i; | |
4ee9c684 | 825 | } |
826 | ||
827 | ||
828 | /* Special subroutine for getting a symbol node associated with a | |
829 | procedure name, used in SUBROUTINE and FUNCTION statements. The | |
830 | symbol is created in the parent using with symtree node in the | |
831 | child unit pointing to the symbol. If the current namespace has no | |
832 | parent, then the symbol is just created in the current unit. */ | |
833 | ||
834 | static int | |
1a9745d2 | 835 | get_proc_name (const char *name, gfc_symbol **result, bool module_fcn_entry) |
4ee9c684 | 836 | { |
837 | gfc_symtree *st; | |
838 | gfc_symbol *sym; | |
2ddb8ed9 | 839 | int rc = 0; |
4ee9c684 | 840 | |
d77f260f | 841 | /* Module functions have to be left in their own namespace because |
842 | they have potentially (almost certainly!) already been referenced. | |
843 | In this sense, they are rather like external functions. This is | |
844 | fixed up in resolve.c(resolve_entries), where the symbol name- | |
845 | space is set to point to the master function, so that the fake | |
846 | result mechanism can work. */ | |
847 | if (module_fcn_entry) | |
861d824f | 848 | { |
849 | /* Present if entry is declared to be a module procedure. */ | |
850 | rc = gfc_find_symbol (name, gfc_current_ns->parent, 0, result); | |
c6a05992 | 851 | |
861d824f | 852 | if (*result == NULL) |
853 | rc = gfc_get_symbol (name, NULL, result); | |
a78f714d | 854 | else if (!gfc_get_symbol (name, NULL, &sym) && sym |
c6a05992 | 855 | && (*result)->ts.type == BT_UNKNOWN |
856 | && sym->attr.flavor == FL_UNKNOWN) | |
857 | /* Pick up the typespec for the entry, if declared in the function | |
858 | body. Note that this symbol is FL_UNKNOWN because it will | |
859 | only have appeared in a type declaration. The local symtree | |
860 | is set to point to the module symbol and a unique symtree | |
861 | to the local version. This latter ensures a correct clearing | |
862 | of the symbols. */ | |
a78f714d | 863 | { |
864 | /* If the ENTRY proceeds its specification, we need to ensure | |
865 | that this does not raise a "has no IMPLICIT type" error. */ | |
866 | if (sym->ts.type == BT_UNKNOWN) | |
2168078b | 867 | sym->attr.untyped = 1; |
a78f714d | 868 | |
2168078b | 869 | (*result)->ts = sym->ts; |
a78f714d | 870 | |
871 | /* Put the symbol in the procedure namespace so that, should | |
69b1505f | 872 | the ENTRY precede its specification, the specification |
a78f714d | 873 | can be applied. */ |
874 | (*result)->ns = gfc_current_ns; | |
875 | ||
876 | gfc_find_sym_tree (name, gfc_current_ns, 0, &st); | |
877 | st->n.sym = *result; | |
878 | st = gfc_get_unique_symtree (gfc_current_ns); | |
879 | st->n.sym = sym; | |
880 | } | |
861d824f | 881 | } |
858f9894 | 882 | else |
883 | rc = gfc_get_symbol (name, gfc_current_ns->parent, result); | |
4ee9c684 | 884 | |
2ddb8ed9 | 885 | if (rc) |
886 | return rc; | |
887 | ||
858f9894 | 888 | sym = *result; |
4ee9c684 | 889 | |
c1977dbe | 890 | if (sym && !sym->gfc_new && gfc_current_state () != COMP_INTERFACE) |
858f9894 | 891 | { |
16f49153 | 892 | /* Trap another encompassed procedure with the same name. All |
893 | these conditions are necessary to avoid picking up an entry | |
894 | whose name clashes with that of the encompassing procedure; | |
895 | this is handled using gsymbols to register unique,globally | |
896 | accessible names. */ | |
858f9894 | 897 | if (sym->attr.flavor != 0 |
1a9745d2 | 898 | && sym->attr.proc != 0 |
899 | && (sym->attr.subroutine || sym->attr.function) | |
900 | && sym->attr.if_source != IFSRC_UNKNOWN) | |
bf79c656 | 901 | gfc_error_now_1 ("Procedure '%s' at %C is already defined at %L", |
902 | name, &sym->declared_at); | |
858f9894 | 903 | |
5720fd2f | 904 | /* Trap a procedure with a name the same as interface in the |
905 | encompassing scope. */ | |
906 | if (sym->attr.generic != 0 | |
db697236 | 907 | && (sym->attr.subroutine || sym->attr.function) |
908 | && !sym->attr.mod_proc) | |
bf79c656 | 909 | gfc_error_now_1 ("Name '%s' at %C is already defined" |
910 | " as a generic interface at %L", | |
911 | name, &sym->declared_at); | |
5720fd2f | 912 | |
858f9894 | 913 | /* Trap declarations of attributes in encompassing scope. The |
914 | signature for this is that ts.kind is set. Legitimate | |
915 | references only set ts.type. */ | |
916 | if (sym->ts.kind != 0 | |
1a9745d2 | 917 | && !sym->attr.implicit_type |
918 | && sym->attr.proc == 0 | |
919 | && gfc_current_ns->parent != NULL | |
920 | && sym->attr.access == 0 | |
921 | && !module_fcn_entry) | |
bf79c656 | 922 | gfc_error_now_1 ("Procedure '%s' at %C has an explicit interface " |
923 | "and must not have attributes declared at %L", | |
924 | name, &sym->declared_at); | |
858f9894 | 925 | } |
926 | ||
927 | if (gfc_current_ns->parent == NULL || *result == NULL) | |
928 | return rc; | |
4ee9c684 | 929 | |
d77f260f | 930 | /* Module function entries will already have a symtree in |
931 | the current namespace but will need one at module level. */ | |
932 | if (module_fcn_entry) | |
861d824f | 933 | { |
934 | /* Present if entry is declared to be a module procedure. */ | |
935 | rc = gfc_find_sym_tree (name, gfc_current_ns->parent, 0, &st); | |
936 | if (st == NULL) | |
937 | st = gfc_new_symtree (&gfc_current_ns->parent->sym_root, name); | |
938 | } | |
d77f260f | 939 | else |
940 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); | |
4ee9c684 | 941 | |
4ee9c684 | 942 | st->n.sym = sym; |
943 | sym->refs++; | |
944 | ||
f6d0e37a | 945 | /* See if the procedure should be a module procedure. */ |
4ee9c684 | 946 | |
d77f260f | 947 | if (((sym->ns->proc_name != NULL |
861d824f | 948 | && sym->ns->proc_name->attr.flavor == FL_MODULE |
949 | && sym->attr.proc != PROC_MODULE) | |
950 | || (module_fcn_entry && sym->attr.proc != PROC_MODULE)) | |
60e19868 | 951 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
4ee9c684 | 952 | rc = 2; |
953 | ||
954 | return rc; | |
955 | } | |
956 | ||
957 | ||
c5d33754 | 958 | /* Verify that the given symbol representing a parameter is C |
959 | interoperable, by checking to see if it was marked as such after | |
960 | its declaration. If the given symbol is not interoperable, a | |
961 | warning is reported, thus removing the need to return the status to | |
962 | the calling function. The standard does not require the user use | |
963 | one of the iso_c_binding named constants to declare an | |
964 | interoperable parameter, but we can't be sure if the param is C | |
965 | interop or not if the user doesn't. For example, integer(4) may be | |
966 | legal Fortran, but doesn't have meaning in C. It may interop with | |
967 | a number of the C types, which causes a problem because the | |
968 | compiler can't know which one. This code is almost certainly not | |
969 | portable, and the user will get what they deserve if the C type | |
970 | across platforms isn't always interoperable with integer(4). If | |
971 | the user had used something like integer(c_int) or integer(c_long), | |
972 | the compiler could have automatically handled the varying sizes | |
973 | across platforms. */ | |
974 | ||
60e19868 | 975 | bool |
2564c57a | 976 | gfc_verify_c_interop_param (gfc_symbol *sym) |
c5d33754 | 977 | { |
978 | int is_c_interop = 0; | |
60e19868 | 979 | bool retval = true; |
c5d33754 | 980 | |
981 | /* We check implicitly typed variables in symbol.c:gfc_set_default_type(). | |
982 | Don't repeat the checks here. */ | |
983 | if (sym->attr.implicit_type) | |
60e19868 | 984 | return true; |
8db94b3b | 985 | |
c5d33754 | 986 | /* For subroutines or functions that are passed to a BIND(C) procedure, |
987 | they're interoperable if they're BIND(C) and their params are all | |
988 | interoperable. */ | |
989 | if (sym->attr.flavor == FL_PROCEDURE) | |
990 | { | |
991 | if (sym->attr.is_bind_c == 0) | |
992 | { | |
bf79c656 | 993 | gfc_error_now ("Procedure %qs at %L must have the BIND(C) " |
994 | "attribute to be C interoperable", sym->name, | |
995 | &(sym->declared_at)); | |
60e19868 | 996 | return false; |
c5d33754 | 997 | } |
998 | else | |
999 | { | |
1000 | if (sym->attr.is_c_interop == 1) | |
1001 | /* We've already checked this procedure; don't check it again. */ | |
60e19868 | 1002 | return true; |
c5d33754 | 1003 | else |
1004 | return verify_bind_c_sym (sym, &(sym->ts), sym->attr.in_common, | |
1005 | sym->common_block); | |
1006 | } | |
1007 | } | |
8db94b3b | 1008 | |
c5d33754 | 1009 | /* See if we've stored a reference to a procedure that owns sym. */ |
1010 | if (sym->ns != NULL && sym->ns->proc_name != NULL) | |
1011 | { | |
1012 | if (sym->ns->proc_name->attr.is_bind_c == 1) | |
1013 | { | |
60e19868 | 1014 | is_c_interop = (gfc_verify_c_interop(&(sym->ts)) ? 1 : 0); |
c5d33754 | 1015 | |
1016 | if (is_c_interop != 1) | |
1017 | { | |
1018 | /* Make personalized messages to give better feedback. */ | |
1019 | if (sym->ts.type == BT_DERIVED) | |
2564c57a | 1020 | gfc_error ("Variable '%s' at %L is a dummy argument to the " |
1021 | "BIND(C) procedure '%s' but is not C interoperable " | |
c5d33754 | 1022 | "because derived type '%s' is not C interoperable", |
1023 | sym->name, &(sym->declared_at), | |
8db94b3b | 1024 | sym->ns->proc_name->name, |
eeebe20b | 1025 | sym->ts.u.derived->name); |
2564c57a | 1026 | else if (sym->ts.type == BT_CLASS) |
1027 | gfc_error ("Variable '%s' at %L is a dummy argument to the " | |
1028 | "BIND(C) procedure '%s' but is not C interoperable " | |
1029 | "because it is polymorphic", | |
1030 | sym->name, &(sym->declared_at), | |
1031 | sym->ns->proc_name->name); | |
bf79c656 | 1032 | else if (warn_c_binding_type) |
e25ecd2b | 1033 | gfc_warning ("Variable '%s' at %L is a dummy argument of the " |
c5d33754 | 1034 | "BIND(C) procedure '%s' but may not be C " |
1035 | "interoperable", | |
1036 | sym->name, &(sym->declared_at), | |
1037 | sym->ns->proc_name->name); | |
1038 | } | |
e4eda3ec | 1039 | |
1040 | /* Character strings are only C interoperable if they have a | |
1041 | length of 1. */ | |
1042 | if (sym->ts.type == BT_CHARACTER) | |
1043 | { | |
eeebe20b | 1044 | gfc_charlen *cl = sym->ts.u.cl; |
e4eda3ec | 1045 | if (!cl || !cl->length || cl->length->expr_type != EXPR_CONSTANT |
1046 | || mpz_cmp_si (cl->length->value.integer, 1) != 0) | |
1047 | { | |
1048 | gfc_error ("Character argument '%s' at %L " | |
1049 | "must be length 1 because " | |
1050 | "procedure '%s' is BIND(C)", | |
1051 | sym->name, &sym->declared_at, | |
1052 | sym->ns->proc_name->name); | |
60e19868 | 1053 | retval = false; |
e4eda3ec | 1054 | } |
1055 | } | |
1056 | ||
c5d33754 | 1057 | /* We have to make sure that any param to a bind(c) routine does |
1058 | not have the allocatable, pointer, or optional attributes, | |
1059 | according to J3/04-007, section 5.1. */ | |
a435dc3a | 1060 | if (sym->attr.allocatable == 1 |
1061 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable '%s' at %L with " | |
1062 | "ALLOCATABLE attribute in procedure '%s' " | |
1063 | "with BIND(C)", sym->name, | |
1064 | &(sym->declared_at), | |
1065 | sym->ns->proc_name->name)) | |
1066 | retval = false; | |
1067 | ||
1068 | if (sym->attr.pointer == 1 | |
1069 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable '%s' at %L with " | |
1070 | "POINTER attribute in procedure '%s' " | |
1071 | "with BIND(C)", sym->name, | |
1072 | &(sym->declared_at), | |
1073 | sym->ns->proc_name->name)) | |
1074 | retval = false; | |
1075 | ||
1076 | if ((sym->attr.allocatable || sym->attr.pointer) && !sym->as) | |
c5d33754 | 1077 | { |
a435dc3a | 1078 | gfc_error ("Scalar variable '%s' at %L with POINTER or " |
1079 | "ALLOCATABLE in procedure '%s' with BIND(C) is not yet" | |
1080 | " supported", sym->name, &(sym->declared_at), | |
c5d33754 | 1081 | sym->ns->proc_name->name); |
60e19868 | 1082 | retval = false; |
c5d33754 | 1083 | } |
1084 | ||
495e197c | 1085 | if (sym->attr.optional == 1 && sym->attr.value) |
c5d33754 | 1086 | { |
495e197c | 1087 | gfc_error ("Variable '%s' at %L cannot have both the OPTIONAL " |
1088 | "and the VALUE attribute because procedure '%s' " | |
1089 | "is BIND(C)", sym->name, &(sym->declared_at), | |
c5d33754 | 1090 | sym->ns->proc_name->name); |
60e19868 | 1091 | retval = false; |
c5d33754 | 1092 | } |
495e197c | 1093 | else if (sym->attr.optional == 1 |
60e19868 | 1094 | && !gfc_notify_std (GFC_STD_F2008_TS, "Variable '%s' " |
1095 | "at %L with OPTIONAL attribute in " | |
1096 | "procedure '%s' which is BIND(C)", | |
1097 | sym->name, &(sym->declared_at), | |
1098 | sym->ns->proc_name->name)) | |
1099 | retval = false; | |
c5d33754 | 1100 | |
1101 | /* Make sure that if it has the dimension attribute, that it is | |
9350ae4e | 1102 | either assumed size or explicit shape. Deferred shape is already |
1103 | covered by the pointer/allocatable attribute. */ | |
1104 | if (sym->as != NULL && sym->as->type == AS_ASSUMED_SHAPE | |
60e19868 | 1105 | && !gfc_notify_std (GFC_STD_F2008_TS, "Assumed-shape array '%s' " |
1106 | "at %L as dummy argument to the BIND(C) " | |
1107 | "procedure '%s' at %L", sym->name, | |
1108 | &(sym->declared_at), | |
1109 | sym->ns->proc_name->name, | |
1110 | &(sym->ns->proc_name->declared_at))) | |
1111 | retval = false; | |
c5d33754 | 1112 | } |
1113 | } | |
1114 | ||
1115 | return retval; | |
1116 | } | |
1117 | ||
1118 | ||
1de1b1a9 | 1119 | |
c5d33754 | 1120 | /* Function called by variable_decl() that adds a name to the symbol table. */ |
4ee9c684 | 1121 | |
60e19868 | 1122 | static bool |
3e715c81 | 1123 | build_sym (const char *name, gfc_charlen *cl, bool cl_deferred, |
1a9745d2 | 1124 | gfc_array_spec **as, locus *var_locus) |
4ee9c684 | 1125 | { |
1126 | symbol_attribute attr; | |
1127 | gfc_symbol *sym; | |
1128 | ||
ee893be6 | 1129 | if (gfc_get_symbol (name, NULL, &sym)) |
60e19868 | 1130 | return false; |
4ee9c684 | 1131 | |
f6d0e37a | 1132 | /* Start updating the symbol table. Add basic type attribute if present. */ |
4ee9c684 | 1133 | if (current_ts.type != BT_UNKNOWN |
1a9745d2 | 1134 | && (sym->attr.implicit_type == 0 |
1135 | || !gfc_compare_types (&sym->ts, ¤t_ts)) | |
60e19868 | 1136 | && !gfc_add_type (sym, ¤t_ts, var_locus)) |
1137 | return false; | |
4ee9c684 | 1138 | |
1139 | if (sym->ts.type == BT_CHARACTER) | |
3e715c81 | 1140 | { |
1141 | sym->ts.u.cl = cl; | |
1142 | sym->ts.deferred = cl_deferred; | |
1143 | } | |
4ee9c684 | 1144 | |
1145 | /* Add dimension attribute if present. */ | |
60e19868 | 1146 | if (!gfc_set_array_spec (sym, *as, var_locus)) |
1147 | return false; | |
4ee9c684 | 1148 | *as = NULL; |
1149 | ||
1150 | /* Add attribute to symbol. The copy is so that we can reset the | |
1151 | dimension attribute. */ | |
1152 | attr = current_attr; | |
1153 | attr.dimension = 0; | |
aff518b0 | 1154 | attr.codimension = 0; |
4ee9c684 | 1155 | |
60e19868 | 1156 | if (!gfc_copy_attr (&sym->attr, &attr, var_locus)) |
1157 | return false; | |
4ee9c684 | 1158 | |
c5d33754 | 1159 | /* Finish any work that may need to be done for the binding label, |
1160 | if it's a bind(c). The bind(c) attr is found before the symbol | |
1161 | is made, and before the symbol name (for data decls), so the | |
1162 | current_ts is holding the binding label, or nothing if the | |
1163 | name= attr wasn't given. Therefore, test here if we're dealing | |
1164 | with a bind(c) and make sure the binding label is set correctly. */ | |
1165 | if (sym->attr.is_bind_c == 1) | |
1166 | { | |
7b2060ba | 1167 | if (!sym->binding_label) |
c5d33754 | 1168 | { |
825718f9 | 1169 | /* Set the binding label and verify that if a NAME= was specified |
1170 | then only one identifier was in the entity-decl-list. */ | |
60e19868 | 1171 | if (!set_binding_label (&sym->binding_label, sym->name, |
1172 | num_idents_on_line)) | |
1173 | return false; | |
c5d33754 | 1174 | } |
1175 | } | |
1176 | ||
1177 | /* See if we know we're in a common block, and if it's a bind(c) | |
1178 | common then we need to make sure we're an interoperable type. */ | |
1179 | if (sym->attr.in_common == 1) | |
1180 | { | |
1181 | /* Test the common block object. */ | |
1182 | if (sym->common_block != NULL && sym->common_block->is_bind_c == 1 | |
1183 | && sym->ts.is_c_interop != 1) | |
1184 | { | |
bf79c656 | 1185 | gfc_error_now ("Variable %qs in common block %qs at %C " |
c5d33754 | 1186 | "must be declared with a C interoperable " |
bf79c656 | 1187 | "kind since common block %qs is BIND(C)", |
c5d33754 | 1188 | sym->name, sym->common_block->name, |
1189 | sym->common_block->name); | |
1190 | gfc_clear_error (); | |
1191 | } | |
1192 | } | |
1193 | ||
2457a77e | 1194 | sym->attr.implied_index = 0; |
1195 | ||
fa102e56 | 1196 | if (sym->ts.type == BT_CLASS) |
e8393d49 | 1197 | return gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as); |
1de1b1a9 | 1198 | |
60e19868 | 1199 | return true; |
4ee9c684 | 1200 | } |
1201 | ||
1a9745d2 | 1202 | |
a270dc8e | 1203 | /* Set character constant to the given length. The constant will be padded or |
d1a39099 | 1204 | truncated. If we're inside an array constructor without a typespec, we |
1205 | additionally check that all elements have the same length; check_len -1 | |
1206 | means no checking. */ | |
a270dc8e | 1207 | |
1208 | void | |
d1a39099 | 1209 | gfc_set_constant_character_len (int len, gfc_expr *expr, int check_len) |
a270dc8e | 1210 | { |
c32f863c | 1211 | gfc_char_t *s; |
a270dc8e | 1212 | int slen; |
1213 | ||
1214 | gcc_assert (expr->expr_type == EXPR_CONSTANT); | |
b44437b9 | 1215 | gcc_assert (expr->ts.type == BT_CHARACTER); |
a270dc8e | 1216 | |
1217 | slen = expr->value.character.length; | |
1218 | if (len != slen) | |
1219 | { | |
c32f863c | 1220 | s = gfc_get_wide_string (len + 1); |
1221 | memcpy (s, expr->value.character.string, | |
1222 | MIN (len, slen) * sizeof (gfc_char_t)); | |
a270dc8e | 1223 | if (len > slen) |
c32f863c | 1224 | gfc_wide_memset (&s[slen], ' ', len - slen); |
1bfea7e8 | 1225 | |
fed21cc2 | 1226 | if (warn_character_truncation && slen > len) |
bf79c656 | 1227 | gfc_warning_now (OPT_Wcharacter_truncation, |
1228 | "CHARACTER expression at %L is being truncated " | |
1229 | "(%d/%d)", &expr->where, slen, len); | |
1bfea7e8 | 1230 | |
1231 | /* Apply the standard by 'hand' otherwise it gets cleared for | |
1232 | initializers. */ | |
d1a39099 | 1233 | if (check_len != -1 && slen != check_len |
1234 | && !(gfc_option.allow_std & GFC_STD_GNU)) | |
1bfea7e8 | 1235 | gfc_error_now ("The CHARACTER elements of the array constructor " |
1236 | "at %L must have the same length (%d/%d)", | |
d1a39099 | 1237 | &expr->where, slen, check_len); |
1bfea7e8 | 1238 | |
89f528df | 1239 | s[len] = '\0'; |
434f0922 | 1240 | free (expr->value.character.string); |
a270dc8e | 1241 | expr->value.character.string = s; |
1242 | expr->value.character.length = len; | |
1243 | } | |
1244 | } | |
4ee9c684 | 1245 | |
3b6a4b41 | 1246 | |
e14bee04 | 1247 | /* Function to create and update the enumerator history |
3b6a4b41 | 1248 | using the information passed as arguments. |
e14bee04 | 1249 | Pointer "max_enum" is also updated, to point to |
1250 | enum history node containing largest initializer. | |
3b6a4b41 | 1251 | |
1252 | SYM points to the symbol node of enumerator. | |
f6d0e37a | 1253 | INIT points to its enumerator value. */ |
3b6a4b41 | 1254 | |
e14bee04 | 1255 | static void |
1a9745d2 | 1256 | create_enum_history (gfc_symbol *sym, gfc_expr *init) |
3b6a4b41 | 1257 | { |
1258 | enumerator_history *new_enum_history; | |
1259 | gcc_assert (sym != NULL && init != NULL); | |
1260 | ||
48d8ad5a | 1261 | new_enum_history = XCNEW (enumerator_history); |
3b6a4b41 | 1262 | |
1263 | new_enum_history->sym = sym; | |
1264 | new_enum_history->initializer = init; | |
1265 | new_enum_history->next = NULL; | |
1266 | ||
1267 | if (enum_history == NULL) | |
1268 | { | |
1269 | enum_history = new_enum_history; | |
1270 | max_enum = enum_history; | |
1271 | } | |
1272 | else | |
1273 | { | |
1274 | new_enum_history->next = enum_history; | |
1275 | enum_history = new_enum_history; | |
1276 | ||
e14bee04 | 1277 | if (mpz_cmp (max_enum->initializer->value.integer, |
3b6a4b41 | 1278 | new_enum_history->initializer->value.integer) < 0) |
1a9745d2 | 1279 | max_enum = new_enum_history; |
3b6a4b41 | 1280 | } |
1281 | } | |
1282 | ||
1283 | ||
e14bee04 | 1284 | /* Function to free enum kind history. */ |
3b6a4b41 | 1285 | |
e14bee04 | 1286 | void |
1a9745d2 | 1287 | gfc_free_enum_history (void) |
3b6a4b41 | 1288 | { |
e14bee04 | 1289 | enumerator_history *current = enum_history; |
1290 | enumerator_history *next; | |
3b6a4b41 | 1291 | |
1292 | while (current != NULL) | |
1293 | { | |
1294 | next = current->next; | |
434f0922 | 1295 | free (current); |
3b6a4b41 | 1296 | current = next; |
1297 | } | |
1298 | max_enum = NULL; | |
1299 | enum_history = NULL; | |
1300 | } | |
1301 | ||
1302 | ||
4ee9c684 | 1303 | /* Function called by variable_decl() that adds an initialization |
1304 | expression to a symbol. */ | |
1305 | ||
60e19868 | 1306 | static bool |
f6d0e37a | 1307 | add_init_expr_to_sym (const char *name, gfc_expr **initp, locus *var_locus) |
4ee9c684 | 1308 | { |
1309 | symbol_attribute attr; | |
1310 | gfc_symbol *sym; | |
1311 | gfc_expr *init; | |
1312 | ||
1313 | init = *initp; | |
36b0a1b0 | 1314 | if (find_special (name, &sym, false)) |
60e19868 | 1315 | return false; |
4ee9c684 | 1316 | |
1317 | attr = sym->attr; | |
1318 | ||
1319 | /* If this symbol is confirming an implicit parameter type, | |
1320 | then an initialization expression is not allowed. */ | |
1321 | if (attr.flavor == FL_PARAMETER | |
1322 | && sym->value != NULL | |
1323 | && *initp != NULL) | |
1324 | { | |
1325 | gfc_error ("Initializer not allowed for PARAMETER '%s' at %C", | |
1326 | sym->name); | |
60e19868 | 1327 | return false; |
4ee9c684 | 1328 | } |
1329 | ||
1330 | if (init == NULL) | |
1331 | { | |
1332 | /* An initializer is required for PARAMETER declarations. */ | |
1333 | if (attr.flavor == FL_PARAMETER) | |
1334 | { | |
1335 | gfc_error ("PARAMETER at %L is missing an initializer", var_locus); | |
60e19868 | 1336 | return false; |
4ee9c684 | 1337 | } |
1338 | } | |
1339 | else | |
1340 | { | |
1341 | /* If a variable appears in a DATA block, it cannot have an | |
b97f1a18 | 1342 | initializer. */ |
4ee9c684 | 1343 | if (sym->attr.data) |
1344 | { | |
1a9745d2 | 1345 | gfc_error ("Variable '%s' at %C with an initializer already " |
1346 | "appears in a DATA statement", sym->name); | |
60e19868 | 1347 | return false; |
4ee9c684 | 1348 | } |
1349 | ||
cca3db55 | 1350 | /* Check if the assignment can happen. This has to be put off |
23d075f4 | 1351 | until later for derived type variables and procedure pointers. */ |
4ee9c684 | 1352 | if (sym->ts.type != BT_DERIVED && init->ts.type != BT_DERIVED |
1de1b1a9 | 1353 | && sym->ts.type != BT_CLASS && init->ts.type != BT_CLASS |
8db94b3b | 1354 | && !sym->attr.proc_pointer |
60e19868 | 1355 | && !gfc_check_assign_symbol (sym, NULL, init)) |
1356 | return false; | |
4ee9c684 | 1357 | |
eeebe20b | 1358 | if (sym->ts.type == BT_CHARACTER && sym->ts.u.cl |
da540712 | 1359 | && init->ts.type == BT_CHARACTER) |
a270dc8e | 1360 | { |
1361 | /* Update symbol character length according initializer. */ | |
60e19868 | 1362 | if (!gfc_check_assign_symbol (sym, NULL, init)) |
1363 | return false; | |
da540712 | 1364 | |
eeebe20b | 1365 | if (sym->ts.u.cl->length == NULL) |
a270dc8e | 1366 | { |
03c2a028 | 1367 | int clen; |
f6d0e37a | 1368 | /* If there are multiple CHARACTER variables declared on the |
1369 | same line, we don't want them to share the same length. */ | |
d270ce52 | 1370 | sym->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
e9c873a4 | 1371 | |
03c2a028 | 1372 | if (sym->attr.flavor == FL_PARAMETER) |
1373 | { | |
1374 | if (init->expr_type == EXPR_CONSTANT) | |
1375 | { | |
1376 | clen = init->value.character.length; | |
126387b5 | 1377 | sym->ts.u.cl->length |
1378 | = gfc_get_int_expr (gfc_default_integer_kind, | |
1379 | NULL, clen); | |
03c2a028 | 1380 | } |
1381 | else if (init->expr_type == EXPR_ARRAY) | |
1382 | { | |
126387b5 | 1383 | gfc_constructor *c; |
1384 | c = gfc_constructor_first (init->value.constructor); | |
1385 | clen = c->expr->value.character.length; | |
1386 | sym->ts.u.cl->length | |
1387 | = gfc_get_int_expr (gfc_default_integer_kind, | |
1388 | NULL, clen); | |
03c2a028 | 1389 | } |
eeebe20b | 1390 | else if (init->ts.u.cl && init->ts.u.cl->length) |
1391 | sym->ts.u.cl->length = | |
1392 | gfc_copy_expr (sym->value->ts.u.cl->length); | |
03c2a028 | 1393 | } |
a270dc8e | 1394 | } |
1395 | /* Update initializer character length according symbol. */ | |
eeebe20b | 1396 | else if (sym->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
a270dc8e | 1397 | { |
eeebe20b | 1398 | int len = mpz_get_si (sym->ts.u.cl->length->value.integer); |
a270dc8e | 1399 | |
1400 | if (init->expr_type == EXPR_CONSTANT) | |
d1a39099 | 1401 | gfc_set_constant_character_len (len, init, -1); |
a270dc8e | 1402 | else if (init->expr_type == EXPR_ARRAY) |
1403 | { | |
126387b5 | 1404 | gfc_constructor *c; |
1405 | ||
39908fd9 | 1406 | /* Build a new charlen to prevent simplification from |
1407 | deleting the length before it is resolved. */ | |
d270ce52 | 1408 | init->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
eeebe20b | 1409 | init->ts.u.cl->length = gfc_copy_expr (sym->ts.u.cl->length); |
39908fd9 | 1410 | |
126387b5 | 1411 | for (c = gfc_constructor_first (init->value.constructor); |
1412 | c; c = gfc_constructor_next (c)) | |
1413 | gfc_set_constant_character_len (len, c->expr, -1); | |
a270dc8e | 1414 | } |
1415 | } | |
1416 | } | |
1417 | ||
ae2864a8 | 1418 | /* If sym is implied-shape, set its upper bounds from init. */ |
1419 | if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension | |
1420 | && sym->as->type == AS_IMPLIED_SHAPE) | |
1421 | { | |
1422 | int dim; | |
1423 | ||
1424 | if (init->rank == 0) | |
1425 | { | |
1426 | gfc_error ("Can't initialize implied-shape array at %L" | |
1427 | " with scalar", &sym->declared_at); | |
60e19868 | 1428 | return false; |
ae2864a8 | 1429 | } |
1430 | gcc_assert (sym->as->rank == init->rank); | |
1431 | ||
1432 | /* Shape should be present, we get an initialization expression. */ | |
1433 | gcc_assert (init->shape); | |
1434 | ||
1435 | for (dim = 0; dim < sym->as->rank; ++dim) | |
1436 | { | |
1437 | int k; | |
1438 | gfc_expr* lower; | |
1439 | gfc_expr* e; | |
8db94b3b | 1440 | |
ae2864a8 | 1441 | lower = sym->as->lower[dim]; |
1442 | if (lower->expr_type != EXPR_CONSTANT) | |
1443 | { | |
1444 | gfc_error ("Non-constant lower bound in implied-shape" | |
1445 | " declaration at %L", &lower->where); | |
60e19868 | 1446 | return false; |
ae2864a8 | 1447 | } |
1448 | ||
1449 | /* All dimensions must be without upper bound. */ | |
1450 | gcc_assert (!sym->as->upper[dim]); | |
1451 | ||
1452 | k = lower->ts.kind; | |
1453 | e = gfc_get_constant_expr (BT_INTEGER, k, &sym->declared_at); | |
1454 | mpz_add (e->value.integer, | |
1455 | lower->value.integer, init->shape[dim]); | |
1456 | mpz_sub_ui (e->value.integer, e->value.integer, 1); | |
1457 | sym->as->upper[dim] = e; | |
1458 | } | |
1459 | ||
1460 | sym->as->type = AS_EXPLICIT; | |
1461 | } | |
1462 | ||
c5d33754 | 1463 | /* Need to check if the expression we initialized this |
1464 | to was one of the iso_c_binding named constants. If so, | |
1465 | and we're a parameter (constant), let it be iso_c. | |
1466 | For example: | |
1467 | integer(c_int), parameter :: my_int = c_int | |
1468 | integer(my_int) :: my_int_2 | |
1469 | If we mark my_int as iso_c (since we can see it's value | |
1470 | is equal to one of the named constants), then my_int_2 | |
1471 | will be considered C interoperable. */ | |
1472 | if (sym->ts.type != BT_CHARACTER && sym->ts.type != BT_DERIVED) | |
1473 | { | |
1474 | sym->ts.is_iso_c |= init->ts.is_iso_c; | |
1475 | sym->ts.is_c_interop |= init->ts.is_c_interop; | |
1476 | /* attr bits needed for module files. */ | |
1477 | sym->attr.is_iso_c |= init->ts.is_iso_c; | |
1478 | sym->attr.is_c_interop |= init->ts.is_c_interop; | |
1479 | if (init->ts.is_iso_c) | |
1480 | sym->ts.f90_type = init->ts.f90_type; | |
1481 | } | |
126387b5 | 1482 | |
4ee9c684 | 1483 | /* Add initializer. Make sure we keep the ranks sane. */ |
1484 | if (sym->attr.dimension && init->rank == 0) | |
7baa3fb4 | 1485 | { |
1486 | mpz_t size; | |
1487 | gfc_expr *array; | |
7baa3fb4 | 1488 | int n; |
1489 | if (sym->attr.flavor == FL_PARAMETER | |
1490 | && init->expr_type == EXPR_CONSTANT | |
60e19868 | 1491 | && spec_size (sym->as, &size) |
7baa3fb4 | 1492 | && mpz_cmp_si (size, 0) > 0) |
1493 | { | |
126387b5 | 1494 | array = gfc_get_array_expr (init->ts.type, init->ts.kind, |
1495 | &init->where); | |
7baa3fb4 | 1496 | for (n = 0; n < (int)mpz_get_si (size); n++) |
126387b5 | 1497 | gfc_constructor_append_expr (&array->value.constructor, |
1498 | n == 0 | |
1499 | ? init | |
1500 | : gfc_copy_expr (init), | |
1501 | &init->where); | |
8db94b3b | 1502 | |
7baa3fb4 | 1503 | array->shape = gfc_get_shape (sym->as->rank); |
1504 | for (n = 0; n < sym->as->rank; n++) | |
1505 | spec_dimen_size (sym->as, n, &array->shape[n]); | |
1506 | ||
1507 | init = array; | |
1508 | mpz_clear (size); | |
1509 | } | |
1510 | init->rank = sym->as->rank; | |
1511 | } | |
4ee9c684 | 1512 | |
1513 | sym->value = init; | |
3cd3c667 | 1514 | if (sym->attr.save == SAVE_NONE) |
1515 | sym->attr.save = SAVE_IMPLICIT; | |
4ee9c684 | 1516 | *initp = NULL; |
1517 | } | |
1518 | ||
60e19868 | 1519 | return true; |
4ee9c684 | 1520 | } |
1521 | ||
1522 | ||
1523 | /* Function called by variable_decl() that adds a name to a structure | |
1524 | being built. */ | |
1525 | ||
60e19868 | 1526 | static bool |
1a9745d2 | 1527 | build_struct (const char *name, gfc_charlen *cl, gfc_expr **init, |
1528 | gfc_array_spec **as) | |
4ee9c684 | 1529 | { |
1530 | gfc_component *c; | |
60e19868 | 1531 | bool t = true; |
4ee9c684 | 1532 | |
53d2e124 | 1533 | /* F03:C438/C439. If the current symbol is of the same derived type that we're |
4ee9c684 | 1534 | constructing, it must have the pointer attribute. */ |
53d2e124 | 1535 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
eeebe20b | 1536 | && current_ts.u.derived == gfc_current_block () |
4ee9c684 | 1537 | && current_attr.pointer == 0) |
1538 | { | |
1539 | gfc_error ("Component at %C must have the POINTER attribute"); | |
60e19868 | 1540 | return false; |
4ee9c684 | 1541 | } |
1542 | ||
1a9745d2 | 1543 | if (gfc_current_block ()->attr.pointer && (*as)->rank != 0) |
4ee9c684 | 1544 | { |
1545 | if ((*as)->type != AS_DEFERRED && (*as)->type != AS_EXPLICIT) | |
1546 | { | |
1547 | gfc_error ("Array component of structure at %C must have explicit " | |
1548 | "or deferred shape"); | |
60e19868 | 1549 | return false; |
4ee9c684 | 1550 | } |
1551 | } | |
1552 | ||
60e19868 | 1553 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
1554 | return false; | |
4ee9c684 | 1555 | |
1556 | c->ts = current_ts; | |
eeebe20b | 1557 | if (c->ts.type == BT_CHARACTER) |
1558 | c->ts.u.cl = cl; | |
3be2b8d5 | 1559 | c->attr = current_attr; |
4ee9c684 | 1560 | |
1561 | c->initializer = *init; | |
1562 | *init = NULL; | |
1563 | ||
1564 | c->as = *as; | |
1565 | if (c->as != NULL) | |
aff518b0 | 1566 | { |
1567 | if (c->as->corank) | |
1568 | c->attr.codimension = 1; | |
1569 | if (c->as->rank) | |
1570 | c->attr.dimension = 1; | |
1571 | } | |
4ee9c684 | 1572 | *as = NULL; |
1573 | ||
a2f51d5f | 1574 | /* Should this ever get more complicated, combine with similar section |
1575 | in add_init_expr_to_sym into a separate function. */ | |
2d76519f | 1576 | if (c->ts.type == BT_CHARACTER && !c->attr.pointer && c->initializer |
1577 | && c->ts.u.cl | |
eeebe20b | 1578 | && c->ts.u.cl->length && c->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
a2f51d5f | 1579 | { |
d1a39099 | 1580 | int len; |
1581 | ||
eeebe20b | 1582 | gcc_assert (c->ts.u.cl && c->ts.u.cl->length); |
1583 | gcc_assert (c->ts.u.cl->length->expr_type == EXPR_CONSTANT); | |
1584 | gcc_assert (c->ts.u.cl->length->ts.type == BT_INTEGER); | |
d1a39099 | 1585 | |
eeebe20b | 1586 | len = mpz_get_si (c->ts.u.cl->length->value.integer); |
a2f51d5f | 1587 | |
1588 | if (c->initializer->expr_type == EXPR_CONSTANT) | |
d1a39099 | 1589 | gfc_set_constant_character_len (len, c->initializer, -1); |
eeebe20b | 1590 | else if (mpz_cmp (c->ts.u.cl->length->value.integer, |
1591 | c->initializer->ts.u.cl->length->value.integer)) | |
a2f51d5f | 1592 | { |
126387b5 | 1593 | gfc_constructor *ctor; |
1594 | ctor = gfc_constructor_first (c->initializer->value.constructor); | |
d1a39099 | 1595 | |
6e4faf80 | 1596 | if (ctor) |
d1a39099 | 1597 | { |
6e4faf80 | 1598 | int first_len; |
126387b5 | 1599 | bool has_ts = (c->initializer->ts.u.cl |
1600 | && c->initializer->ts.u.cl->length_from_typespec); | |
6e4faf80 | 1601 | |
1602 | /* Remember the length of the first element for checking | |
1603 | that all elements *in the constructor* have the same | |
1604 | length. This need not be the length of the LHS! */ | |
1605 | gcc_assert (ctor->expr->expr_type == EXPR_CONSTANT); | |
1606 | gcc_assert (ctor->expr->ts.type == BT_CHARACTER); | |
1607 | first_len = ctor->expr->value.character.length; | |
1608 | ||
126387b5 | 1609 | for ( ; ctor; ctor = gfc_constructor_next (ctor)) |
1610 | if (ctor->expr->expr_type == EXPR_CONSTANT) | |
d1a39099 | 1611 | { |
126387b5 | 1612 | gfc_set_constant_character_len (len, ctor->expr, |
1613 | has_ts ? -1 : first_len); | |
1614 | ctor->expr->ts.u.cl->length = gfc_copy_expr (c->ts.u.cl->length); | |
d1a39099 | 1615 | } |
d1a39099 | 1616 | } |
a2f51d5f | 1617 | } |
1618 | } | |
1619 | ||
4ee9c684 | 1620 | /* Check array components. */ |
3be2b8d5 | 1621 | if (!c->attr.dimension) |
b3704193 | 1622 | goto scalar; |
4ee9c684 | 1623 | |
3be2b8d5 | 1624 | if (c->attr.pointer) |
4ee9c684 | 1625 | { |
1626 | if (c->as->type != AS_DEFERRED) | |
1627 | { | |
2294b616 | 1628 | gfc_error ("Pointer array component of structure at %C must have a " |
1629 | "deferred shape"); | |
60e19868 | 1630 | t = false; |
2294b616 | 1631 | } |
1632 | } | |
3be2b8d5 | 1633 | else if (c->attr.allocatable) |
2294b616 | 1634 | { |
1635 | if (c->as->type != AS_DEFERRED) | |
1636 | { | |
1637 | gfc_error ("Allocatable component of structure at %C must have a " | |
1638 | "deferred shape"); | |
60e19868 | 1639 | t = false; |
4ee9c684 | 1640 | } |
1641 | } | |
1642 | else | |
1643 | { | |
1644 | if (c->as->type != AS_EXPLICIT) | |
1645 | { | |
1a9745d2 | 1646 | gfc_error ("Array component of structure at %C must have an " |
1647 | "explicit shape"); | |
60e19868 | 1648 | t = false; |
4ee9c684 | 1649 | } |
1650 | } | |
1651 | ||
b3704193 | 1652 | scalar: |
1653 | if (c->ts.type == BT_CLASS) | |
d9c9afea | 1654 | { |
e8393d49 | 1655 | bool t2 = gfc_build_class_symbol (&c->ts, &c->attr, &c->as); |
431a19be | 1656 | |
60e19868 | 1657 | if (t) |
431a19be | 1658 | t = t2; |
d9c9afea | 1659 | } |
1660 | ||
b3704193 | 1661 | return t; |
4ee9c684 | 1662 | } |
1663 | ||
1664 | ||
1665 | /* Match a 'NULL()', and possibly take care of some side effects. */ | |
1666 | ||
1667 | match | |
1a9745d2 | 1668 | gfc_match_null (gfc_expr **result) |
4ee9c684 | 1669 | { |
1670 | gfc_symbol *sym; | |
f9d34e9a | 1671 | match m, m2 = MATCH_NO; |
4ee9c684 | 1672 | |
f9d34e9a | 1673 | if ((m = gfc_match (" null ( )")) == MATCH_ERROR) |
1674 | return MATCH_ERROR; | |
1675 | ||
1676 | if (m == MATCH_NO) | |
1677 | { | |
1678 | locus old_loc; | |
1679 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
1680 | ||
d780a64b | 1681 | if ((m2 = gfc_match (" null (")) != MATCH_YES) |
f9d34e9a | 1682 | return m2; |
1683 | ||
1684 | old_loc = gfc_current_locus; | |
1685 | if ((m2 = gfc_match (" %n ) ", name)) == MATCH_ERROR) | |
1686 | return MATCH_ERROR; | |
1687 | if (m2 != MATCH_YES | |
1688 | && ((m2 = gfc_match (" mold = %n )", name)) == MATCH_ERROR)) | |
1689 | return MATCH_ERROR; | |
1690 | if (m2 == MATCH_NO) | |
1691 | { | |
1692 | gfc_current_locus = old_loc; | |
1693 | return MATCH_NO; | |
1694 | } | |
1695 | } | |
4ee9c684 | 1696 | |
1697 | /* The NULL symbol now has to be/become an intrinsic function. */ | |
1698 | if (gfc_get_symbol ("null", NULL, &sym)) | |
1699 | { | |
1700 | gfc_error ("NULL() initialization at %C is ambiguous"); | |
1701 | return MATCH_ERROR; | |
1702 | } | |
1703 | ||
1704 | gfc_intrinsic_symbol (sym); | |
1705 | ||
1706 | if (sym->attr.proc != PROC_INTRINSIC | |
ddf8ce2d | 1707 | && !(sym->attr.use_assoc && sym->attr.intrinsic) |
60e19868 | 1708 | && (!gfc_add_procedure(&sym->attr, PROC_INTRINSIC, sym->name, NULL) |
1709 | || !gfc_add_function (&sym->attr, sym->name, NULL))) | |
4ee9c684 | 1710 | return MATCH_ERROR; |
1711 | ||
126387b5 | 1712 | *result = gfc_get_null_expr (&gfc_current_locus); |
4ee9c684 | 1713 | |
f9d34e9a | 1714 | /* Invalid per F2008, C512. */ |
1715 | if (m2 == MATCH_YES) | |
1716 | { | |
1717 | gfc_error ("NULL() initialization at %C may not have MOLD"); | |
1718 | return MATCH_ERROR; | |
1719 | } | |
1720 | ||
4ee9c684 | 1721 | return MATCH_YES; |
1722 | } | |
1723 | ||
1724 | ||
23d075f4 | 1725 | /* Match the initialization expr for a data pointer or procedure pointer. */ |
1726 | ||
1727 | static match | |
1728 | match_pointer_init (gfc_expr **init, int procptr) | |
1729 | { | |
1730 | match m; | |
1731 | ||
1732 | if (gfc_pure (NULL) && gfc_state_stack->state != COMP_DERIVED) | |
1733 | { | |
1734 | gfc_error ("Initialization of pointer at %C is not allowed in " | |
1735 | "a PURE procedure"); | |
1736 | return MATCH_ERROR; | |
1737 | } | |
c77badf3 | 1738 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
23d075f4 | 1739 | |
df084314 | 1740 | /* Match NULL() initialization. */ |
23d075f4 | 1741 | m = gfc_match_null (init); |
1742 | if (m != MATCH_NO) | |
1743 | return m; | |
1744 | ||
1745 | /* Match non-NULL initialization. */ | |
f3efaada | 1746 | gfc_matching_ptr_assignment = !procptr; |
23d075f4 | 1747 | gfc_matching_procptr_assignment = procptr; |
1748 | m = gfc_match_rvalue (init); | |
f3efaada | 1749 | gfc_matching_ptr_assignment = 0; |
23d075f4 | 1750 | gfc_matching_procptr_assignment = 0; |
1751 | if (m == MATCH_ERROR) | |
1752 | return MATCH_ERROR; | |
1753 | else if (m == MATCH_NO) | |
1754 | { | |
1755 | gfc_error ("Error in pointer initialization at %C"); | |
1756 | return MATCH_ERROR; | |
1757 | } | |
1758 | ||
1759 | if (!procptr) | |
1760 | gfc_resolve_expr (*init); | |
8db94b3b | 1761 | |
60e19868 | 1762 | if (!gfc_notify_std (GFC_STD_F2008, "non-NULL pointer " |
1763 | "initialization at %C")) | |
23d075f4 | 1764 | return MATCH_ERROR; |
1765 | ||
1766 | return MATCH_YES; | |
1767 | } | |
1768 | ||
1769 | ||
60e19868 | 1770 | static bool |
f3e89339 | 1771 | check_function_name (char *name) |
1772 | { | |
1773 | /* In functions that have a RESULT variable defined, the function name always | |
1774 | refers to function calls. Therefore, the name is not allowed to appear in | |
1775 | specification statements. When checking this, be careful about | |
1776 | 'hidden' procedure pointer results ('ppr@'). */ | |
1777 | ||
1778 | if (gfc_current_state () == COMP_FUNCTION) | |
1779 | { | |
1780 | gfc_symbol *block = gfc_current_block (); | |
1781 | if (block && block->result && block->result != block | |
1782 | && strcmp (block->result->name, "ppr@") != 0 | |
1783 | && strcmp (block->name, name) == 0) | |
1784 | { | |
1785 | gfc_error ("Function name '%s' not allowed at %C", name); | |
60e19868 | 1786 | return false; |
f3e89339 | 1787 | } |
1788 | } | |
1789 | ||
60e19868 | 1790 | return true; |
f3e89339 | 1791 | } |
1792 | ||
1793 | ||
4ee9c684 | 1794 | /* Match a variable name with an optional initializer. When this |
1795 | subroutine is called, a variable is expected to be parsed next. | |
1796 | Depending on what is happening at the moment, updates either the | |
1797 | symbol table or the current interface. */ | |
1798 | ||
1799 | static match | |
3923b69f | 1800 | variable_decl (int elem) |
4ee9c684 | 1801 | { |
1802 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
1803 | gfc_expr *initializer, *char_len; | |
1804 | gfc_array_spec *as; | |
b549d2a5 | 1805 | gfc_array_spec *cp_as; /* Extra copy for Cray Pointees. */ |
4ee9c684 | 1806 | gfc_charlen *cl; |
3e715c81 | 1807 | bool cl_deferred; |
4ee9c684 | 1808 | locus var_locus; |
1809 | match m; | |
60e19868 | 1810 | bool t; |
b549d2a5 | 1811 | gfc_symbol *sym; |
4ee9c684 | 1812 | |
1813 | initializer = NULL; | |
1814 | as = NULL; | |
b549d2a5 | 1815 | cp_as = NULL; |
4ee9c684 | 1816 | |
1817 | /* When we get here, we've just matched a list of attributes and | |
1818 | maybe a type and a double colon. The next thing we expect to see | |
1819 | is the name of the symbol. */ | |
1820 | m = gfc_match_name (name); | |
1821 | if (m != MATCH_YES) | |
1822 | goto cleanup; | |
1823 | ||
cbb9e6aa | 1824 | var_locus = gfc_current_locus; |
4ee9c684 | 1825 | |
1826 | /* Now we could see the optional array spec. or character length. */ | |
aff518b0 | 1827 | m = gfc_match_array_spec (&as, true, true); |
eae6c6c1 | 1828 | if (m == MATCH_ERROR) |
4ee9c684 | 1829 | goto cleanup; |
3b6a4b41 | 1830 | |
4ee9c684 | 1831 | if (m == MATCH_NO) |
1832 | as = gfc_copy_array_spec (current_as); | |
9b58b4c7 | 1833 | else if (current_as |
60e19868 | 1834 | && !merge_array_spec (current_as, as, true)) |
9b58b4c7 | 1835 | { |
1836 | m = MATCH_ERROR; | |
1837 | goto cleanup; | |
1838 | } | |
4ee9c684 | 1839 | |
eae6c6c1 | 1840 | if (gfc_option.flag_cray_pointer) |
1841 | cp_as = gfc_copy_array_spec (as); | |
1842 | ||
ae2864a8 | 1843 | /* At this point, we know for sure if the symbol is PARAMETER and can thus |
1844 | determine (and check) whether it can be implied-shape. If it | |
1845 | was parsed as assumed-size, change it because PARAMETERs can not | |
1846 | be assumed-size. */ | |
1847 | if (as) | |
1848 | { | |
1849 | if (as->type == AS_IMPLIED_SHAPE && current_attr.flavor != FL_PARAMETER) | |
1850 | { | |
1851 | m = MATCH_ERROR; | |
1852 | gfc_error ("Non-PARAMETER symbol '%s' at %L can't be implied-shape", | |
1853 | name, &var_locus); | |
1854 | goto cleanup; | |
1855 | } | |
1856 | ||
1857 | if (as->type == AS_ASSUMED_SIZE && as->rank == 1 | |
1858 | && current_attr.flavor == FL_PARAMETER) | |
1859 | as->type = AS_IMPLIED_SHAPE; | |
1860 | ||
1861 | if (as->type == AS_IMPLIED_SHAPE | |
60e19868 | 1862 | && !gfc_notify_std (GFC_STD_F2008, "Implied-shape array at %L", |
1863 | &var_locus)) | |
ae2864a8 | 1864 | { |
1865 | m = MATCH_ERROR; | |
1866 | goto cleanup; | |
1867 | } | |
1868 | } | |
1869 | ||
4ee9c684 | 1870 | char_len = NULL; |
1871 | cl = NULL; | |
3e715c81 | 1872 | cl_deferred = false; |
4ee9c684 | 1873 | |
1874 | if (current_ts.type == BT_CHARACTER) | |
1875 | { | |
926b8757 | 1876 | switch (match_char_length (&char_len, &cl_deferred, false)) |
4ee9c684 | 1877 | { |
1878 | case MATCH_YES: | |
d270ce52 | 1879 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
4ee9c684 | 1880 | |
1881 | cl->length = char_len; | |
1882 | break; | |
1883 | ||
3923b69f | 1884 | /* Non-constant lengths need to be copied after the first |
04b61f60 | 1885 | element. Also copy assumed lengths. */ |
4ee9c684 | 1886 | case MATCH_NO: |
04b61f60 | 1887 | if (elem > 1 |
eeebe20b | 1888 | && (current_ts.u.cl->length == NULL |
1889 | || current_ts.u.cl->length->expr_type != EXPR_CONSTANT)) | |
3923b69f | 1890 | { |
d270ce52 | 1891 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
eeebe20b | 1892 | cl->length = gfc_copy_expr (current_ts.u.cl->length); |
3923b69f | 1893 | } |
1894 | else | |
eeebe20b | 1895 | cl = current_ts.u.cl; |
3923b69f | 1896 | |
3e715c81 | 1897 | cl_deferred = current_ts.deferred; |
1898 | ||
4ee9c684 | 1899 | break; |
1900 | ||
1901 | case MATCH_ERROR: | |
1902 | goto cleanup; | |
1903 | } | |
1904 | } | |
1905 | ||
b549d2a5 | 1906 | /* If this symbol has already shown up in a Cray Pointer declaration, |
322680b5 | 1907 | and this is not a component declaration, |
f6d0e37a | 1908 | then we want to set the type & bail out. */ |
322680b5 | 1909 | if (gfc_option.flag_cray_pointer && gfc_current_state () != COMP_DERIVED) |
b549d2a5 | 1910 | { |
1911 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
1912 | if (sym != NULL && sym->attr.cray_pointee) | |
1913 | { | |
1914 | sym->ts.type = current_ts.type; | |
1915 | sym->ts.kind = current_ts.kind; | |
eeebe20b | 1916 | sym->ts.u.cl = cl; |
1917 | sym->ts.u.derived = current_ts.u.derived; | |
c5d33754 | 1918 | sym->ts.is_c_interop = current_ts.is_c_interop; |
1919 | sym->ts.is_iso_c = current_ts.is_iso_c; | |
b549d2a5 | 1920 | m = MATCH_YES; |
8db94b3b | 1921 | |
b549d2a5 | 1922 | /* Check to see if we have an array specification. */ |
1923 | if (cp_as != NULL) | |
1924 | { | |
1925 | if (sym->as != NULL) | |
1926 | { | |
7698a624 | 1927 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
b549d2a5 | 1928 | gfc_free_array_spec (cp_as); |
1929 | m = MATCH_ERROR; | |
1930 | goto cleanup; | |
1931 | } | |
1932 | else | |
1933 | { | |
60e19868 | 1934 | if (!gfc_set_array_spec (sym, cp_as, &var_locus)) |
b549d2a5 | 1935 | gfc_internal_error ("Couldn't set pointee array spec."); |
e14bee04 | 1936 | |
b549d2a5 | 1937 | /* Fix the array spec. */ |
e14bee04 | 1938 | m = gfc_mod_pointee_as (sym->as); |
b549d2a5 | 1939 | if (m == MATCH_ERROR) |
1940 | goto cleanup; | |
1941 | } | |
e14bee04 | 1942 | } |
b549d2a5 | 1943 | goto cleanup; |
1944 | } | |
1945 | else | |
1946 | { | |
1947 | gfc_free_array_spec (cp_as); | |
1948 | } | |
1949 | } | |
e14bee04 | 1950 | |
1e057e9b | 1951 | /* Procedure pointer as function result. */ |
1952 | if (gfc_current_state () == COMP_FUNCTION | |
1953 | && strcmp ("ppr@", gfc_current_block ()->name) == 0 | |
1954 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) == 0) | |
1955 | strcpy (name, "ppr@"); | |
1956 | ||
1957 | if (gfc_current_state () == COMP_FUNCTION | |
1958 | && strcmp (name, gfc_current_block ()->name) == 0 | |
1959 | && gfc_current_block ()->result | |
1960 | && strcmp ("ppr@", gfc_current_block ()->result->name) == 0) | |
1961 | strcpy (name, "ppr@"); | |
e14bee04 | 1962 | |
4ee9c684 | 1963 | /* OK, we've successfully matched the declaration. Now put the |
1964 | symbol in the current namespace, because it might be used in the | |
fe06c0d5 | 1965 | optional initialization expression for this symbol, e.g. this is |
4ee9c684 | 1966 | perfectly legal: |
1967 | ||
1968 | integer, parameter :: i = huge(i) | |
1969 | ||
1970 | This is only true for parameters or variables of a basic type. | |
1971 | For components of derived types, it is not true, so we don't | |
1972 | create a symbol for those yet. If we fail to create the symbol, | |
1973 | bail out. */ | |
1974 | if (gfc_current_state () != COMP_DERIVED | |
60e19868 | 1975 | && !build_sym (name, cl, cl_deferred, &as, &var_locus)) |
4ee9c684 | 1976 | { |
b8a51d79 | 1977 | m = MATCH_ERROR; |
1978 | goto cleanup; | |
1979 | } | |
1980 | ||
60e19868 | 1981 | if (!check_function_name (name)) |
4ee9c684 | 1982 | { |
4ee9c684 | 1983 | m = MATCH_ERROR; |
1984 | goto cleanup; | |
1985 | } | |
1986 | ||
b4f45d02 | 1987 | /* We allow old-style initializations of the form |
1988 | integer i /2/, j(4) /3*3, 1/ | |
1989 | (if no colon has been seen). These are different from data | |
1990 | statements in that initializers are only allowed to apply to the | |
1991 | variable immediately preceding, i.e. | |
1992 | integer i, j /1, 2/ | |
1993 | is not allowed. Therefore we have to do some work manually, that | |
cca3db55 | 1994 | could otherwise be left to the matchers for DATA statements. */ |
b4f45d02 | 1995 | |
1996 | if (!colon_seen && gfc_match (" /") == MATCH_YES) | |
1997 | { | |
60e19868 | 1998 | if (!gfc_notify_std (GFC_STD_GNU, "Old-style " |
1999 | "initialization at %C")) | |
b4f45d02 | 2000 | return MATCH_ERROR; |
d57a1422 | 2001 | else if (gfc_current_state () == COMP_DERIVED) |
2002 | { | |
2003 | gfc_error ("Invalid old style initialization for derived type " | |
2004 | "component at %C"); | |
2005 | m = MATCH_ERROR; | |
2006 | goto cleanup; | |
2007 | } | |
8db94b3b | 2008 | |
b4f45d02 | 2009 | return match_old_style_init (name); |
2010 | } | |
2011 | ||
4ee9c684 | 2012 | /* The double colon must be present in order to have initializers. |
2013 | Otherwise the statement is ambiguous with an assignment statement. */ | |
2014 | if (colon_seen) | |
2015 | { | |
2016 | if (gfc_match (" =>") == MATCH_YES) | |
2017 | { | |
4ee9c684 | 2018 | if (!current_attr.pointer) |
2019 | { | |
2020 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
2021 | m = MATCH_ERROR; | |
2022 | goto cleanup; | |
2023 | } | |
2024 | ||
23d075f4 | 2025 | m = match_pointer_init (&initializer, 0); |
4ee9c684 | 2026 | if (m != MATCH_YES) |
2027 | goto cleanup; | |
4ee9c684 | 2028 | } |
2029 | else if (gfc_match_char ('=') == MATCH_YES) | |
2030 | { | |
2031 | if (current_attr.pointer) | |
2032 | { | |
1a9745d2 | 2033 | gfc_error ("Pointer initialization at %C requires '=>', " |
2034 | "not '='"); | |
4ee9c684 | 2035 | m = MATCH_ERROR; |
2036 | goto cleanup; | |
2037 | } | |
2038 | ||
2039 | m = gfc_match_init_expr (&initializer); | |
2040 | if (m == MATCH_NO) | |
2041 | { | |
2042 | gfc_error ("Expected an initialization expression at %C"); | |
2043 | m = MATCH_ERROR; | |
2044 | } | |
2045 | ||
b3a420c5 | 2046 | if (current_attr.flavor != FL_PARAMETER && gfc_pure (NULL) |
2047 | && gfc_state_stack->state != COMP_DERIVED) | |
4ee9c684 | 2048 | { |
1a9745d2 | 2049 | gfc_error ("Initialization of variable at %C is not allowed in " |
2050 | "a PURE procedure"); | |
4ee9c684 | 2051 | m = MATCH_ERROR; |
2052 | } | |
2053 | ||
c77badf3 | 2054 | if (current_attr.flavor != FL_PARAMETER |
2055 | && gfc_state_stack->state != COMP_DERIVED) | |
2056 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); | |
2057 | ||
4ee9c684 | 2058 | if (m != MATCH_YES) |
2059 | goto cleanup; | |
2060 | } | |
8ffad0f9 | 2061 | } |
2062 | ||
2294b616 | 2063 | if (initializer != NULL && current_attr.allocatable |
2064 | && gfc_current_state () == COMP_DERIVED) | |
2065 | { | |
1a9745d2 | 2066 | gfc_error ("Initialization of allocatable component at %C is not " |
2067 | "allowed"); | |
2294b616 | 2068 | m = MATCH_ERROR; |
2069 | goto cleanup; | |
2070 | } | |
2071 | ||
d9b3f26b | 2072 | /* Add the initializer. Note that it is fine if initializer is |
4ee9c684 | 2073 | NULL here, because we sometimes also need to check if a |
2074 | declaration *must* have an initialization expression. */ | |
2075 | if (gfc_current_state () != COMP_DERIVED) | |
2076 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
2077 | else | |
d9b3f26b | 2078 | { |
2294b616 | 2079 | if (current_ts.type == BT_DERIVED |
1a9745d2 | 2080 | && !current_attr.pointer && !initializer) |
d9b3f26b | 2081 | initializer = gfc_default_initializer (¤t_ts); |
2082 | t = build_struct (name, cl, &initializer, &as); | |
2083 | } | |
4ee9c684 | 2084 | |
60e19868 | 2085 | m = (t) ? MATCH_YES : MATCH_ERROR; |
4ee9c684 | 2086 | |
2087 | cleanup: | |
2088 | /* Free stuff up and return. */ | |
2089 | gfc_free_expr (initializer); | |
2090 | gfc_free_array_spec (as); | |
2091 | ||
2092 | return m; | |
2093 | } | |
2094 | ||
2095 | ||
d10f89ee | 2096 | /* Match an extended-f77 "TYPESPEC*bytesize"-style kind specification. |
2097 | This assumes that the byte size is equal to the kind number for | |
2098 | non-COMPLEX types, and equal to twice the kind number for COMPLEX. */ | |
4ee9c684 | 2099 | |
2100 | match | |
1a9745d2 | 2101 | gfc_match_old_kind_spec (gfc_typespec *ts) |
4ee9c684 | 2102 | { |
2103 | match m; | |
3bd3b616 | 2104 | int original_kind; |
4ee9c684 | 2105 | |
2106 | if (gfc_match_char ('*') != MATCH_YES) | |
2107 | return MATCH_NO; | |
2108 | ||
3bd3b616 | 2109 | m = gfc_match_small_literal_int (&ts->kind, NULL); |
4ee9c684 | 2110 | if (m != MATCH_YES) |
2111 | return MATCH_ERROR; | |
2112 | ||
b118a35b | 2113 | original_kind = ts->kind; |
2114 | ||
4ee9c684 | 2115 | /* Massage the kind numbers for complex types. */ |
b118a35b | 2116 | if (ts->type == BT_COMPLEX) |
2117 | { | |
2118 | if (ts->kind % 2) | |
1a9745d2 | 2119 | { |
2120 | gfc_error ("Old-style type declaration %s*%d not supported at %C", | |
2121 | gfc_basic_typename (ts->type), original_kind); | |
2122 | return MATCH_ERROR; | |
2123 | } | |
b118a35b | 2124 | ts->kind /= 2; |
2d76519f | 2125 | |
2126 | } | |
2127 | ||
2128 | if (ts->type == BT_INTEGER && ts->kind == 4 && gfc_option.flag_integer4_kind == 8) | |
2129 | ts->kind = 8; | |
2130 | ||
2131 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2132 | { | |
2133 | if (ts->kind == 4) | |
2134 | { | |
2135 | if (gfc_option.flag_real4_kind == 8) | |
2136 | ts->kind = 8; | |
2137 | if (gfc_option.flag_real4_kind == 10) | |
2138 | ts->kind = 10; | |
2139 | if (gfc_option.flag_real4_kind == 16) | |
2140 | ts->kind = 16; | |
2141 | } | |
2142 | ||
2143 | if (ts->kind == 8) | |
2144 | { | |
2145 | if (gfc_option.flag_real8_kind == 4) | |
2146 | ts->kind = 4; | |
2147 | if (gfc_option.flag_real8_kind == 10) | |
2148 | ts->kind = 10; | |
2149 | if (gfc_option.flag_real8_kind == 16) | |
2150 | ts->kind = 16; | |
2151 | } | |
b118a35b | 2152 | } |
4ee9c684 | 2153 | |
f2d4ef3b | 2154 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
4ee9c684 | 2155 | { |
b118a35b | 2156 | gfc_error ("Old-style type declaration %s*%d not supported at %C", |
1a9745d2 | 2157 | gfc_basic_typename (ts->type), original_kind); |
4ee9c684 | 2158 | return MATCH_ERROR; |
2159 | } | |
2160 | ||
60e19868 | 2161 | if (!gfc_notify_std (GFC_STD_GNU, |
2162 | "Nonstandard type declaration %s*%d at %C", | |
2163 | gfc_basic_typename(ts->type), original_kind)) | |
be7f01a1 | 2164 | return MATCH_ERROR; |
2165 | ||
4ee9c684 | 2166 | return MATCH_YES; |
2167 | } | |
2168 | ||
2169 | ||
2170 | /* Match a kind specification. Since kinds are generally optional, we | |
2171 | usually return MATCH_NO if something goes wrong. If a "kind=" | |
2172 | string is found, then we know we have an error. */ | |
2173 | ||
2174 | match | |
67a51c8e | 2175 | gfc_match_kind_spec (gfc_typespec *ts, bool kind_expr_only) |
4ee9c684 | 2176 | { |
67a51c8e | 2177 | locus where, loc; |
4ee9c684 | 2178 | gfc_expr *e; |
2179 | match m, n; | |
c632ff3d | 2180 | char c; |
4ee9c684 | 2181 | const char *msg; |
2182 | ||
2183 | m = MATCH_NO; | |
67a51c8e | 2184 | n = MATCH_YES; |
4ee9c684 | 2185 | e = NULL; |
2186 | ||
67a51c8e | 2187 | where = loc = gfc_current_locus; |
2188 | ||
2189 | if (kind_expr_only) | |
2190 | goto kind_expr; | |
4ee9c684 | 2191 | |
2192 | if (gfc_match_char ('(') == MATCH_NO) | |
2193 | return MATCH_NO; | |
2194 | ||
2195 | /* Also gobbles optional text. */ | |
2196 | if (gfc_match (" kind = ") == MATCH_YES) | |
2197 | m = MATCH_ERROR; | |
2198 | ||
67a51c8e | 2199 | loc = gfc_current_locus; |
2200 | ||
2201 | kind_expr: | |
4ee9c684 | 2202 | n = gfc_match_init_expr (&e); |
67a51c8e | 2203 | |
4ee9c684 | 2204 | if (n != MATCH_YES) |
67a51c8e | 2205 | { |
077932f9 | 2206 | if (gfc_matching_function) |
67a51c8e | 2207 | { |
8db94b3b | 2208 | /* The function kind expression might include use associated or |
077932f9 | 2209 | imported parameters and try again after the specification |
2210 | expressions..... */ | |
67a51c8e | 2211 | if (gfc_match_char (')') != MATCH_YES) |
2212 | { | |
2213 | gfc_error ("Missing right parenthesis at %C"); | |
2214 | m = MATCH_ERROR; | |
2215 | goto no_match; | |
2216 | } | |
2217 | ||
2218 | gfc_free_expr (e); | |
67a51c8e | 2219 | gfc_undo_symbols (); |
2220 | return MATCH_YES; | |
2221 | } | |
2222 | else | |
2223 | { | |
2224 | /* ....or else, the match is real. */ | |
2225 | if (n == MATCH_NO) | |
2226 | gfc_error ("Expected initialization expression at %C"); | |
2227 | if (n != MATCH_YES) | |
2228 | return MATCH_ERROR; | |
2229 | } | |
2230 | } | |
4ee9c684 | 2231 | |
2232 | if (e->rank != 0) | |
2233 | { | |
2234 | gfc_error ("Expected scalar initialization expression at %C"); | |
2235 | m = MATCH_ERROR; | |
2236 | goto no_match; | |
2237 | } | |
2238 | ||
2239 | msg = gfc_extract_int (e, &ts->kind); | |
077932f9 | 2240 | |
4ee9c684 | 2241 | if (msg != NULL) |
2242 | { | |
2243 | gfc_error (msg); | |
2244 | m = MATCH_ERROR; | |
2245 | goto no_match; | |
2246 | } | |
2247 | ||
c5d33754 | 2248 | /* Before throwing away the expression, let's see if we had a |
2249 | C interoperable kind (and store the fact). */ | |
2250 | if (e->ts.is_c_interop == 1) | |
2251 | { | |
df084314 | 2252 | /* Mark this as C interoperable if being declared with one |
c5d33754 | 2253 | of the named constants from iso_c_binding. */ |
2254 | ts->is_c_interop = e->ts.is_iso_c; | |
2255 | ts->f90_type = e->ts.f90_type; | |
2256 | } | |
8db94b3b | 2257 | |
4ee9c684 | 2258 | gfc_free_expr (e); |
2259 | e = NULL; | |
2260 | ||
c5d33754 | 2261 | /* Ignore errors to this point, if we've gotten here. This means |
2262 | we ignore the m=MATCH_ERROR from above. */ | |
f2d4ef3b | 2263 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
4ee9c684 | 2264 | { |
2265 | gfc_error ("Kind %d not supported for type %s at %C", ts->kind, | |
2266 | gfc_basic_typename (ts->type)); | |
c632ff3d | 2267 | gfc_current_locus = where; |
2268 | return MATCH_ERROR; | |
4ee9c684 | 2269 | } |
c632ff3d | 2270 | |
209d3778 | 2271 | /* Warn if, e.g., c_int is used for a REAL variable, but not |
2272 | if, e.g., c_double is used for COMPLEX as the standard | |
2273 | explicitly says that the kind type parameter for complex and real | |
2274 | variable is the same, i.e. c_float == c_float_complex. */ | |
2275 | if (ts->f90_type != BT_UNKNOWN && ts->f90_type != ts->type | |
2276 | && !((ts->f90_type == BT_REAL && ts->type == BT_COMPLEX) | |
2277 | || (ts->f90_type == BT_COMPLEX && ts->type == BT_REAL))) | |
ded233a6 | 2278 | gfc_warning_now ("C kind type parameter is for type %s but type at %L " |
2279 | "is %s", gfc_basic_typename (ts->f90_type), &where, | |
2280 | gfc_basic_typename (ts->type)); | |
209d3778 | 2281 | |
c632ff3d | 2282 | gfc_gobble_whitespace (); |
e0be6f02 | 2283 | if ((c = gfc_next_ascii_char ()) != ')' |
2284 | && (ts->type != BT_CHARACTER || c != ',')) | |
4ee9c684 | 2285 | { |
c632ff3d | 2286 | if (ts->type == BT_CHARACTER) |
2287 | gfc_error ("Missing right parenthesis or comma at %C"); | |
2288 | else | |
2289 | gfc_error ("Missing right parenthesis at %C"); | |
67a51c8e | 2290 | m = MATCH_ERROR; |
4ee9c684 | 2291 | } |
c5d33754 | 2292 | else |
2293 | /* All tests passed. */ | |
2294 | m = MATCH_YES; | |
4ee9c684 | 2295 | |
c5d33754 | 2296 | if(m == MATCH_ERROR) |
2297 | gfc_current_locus = where; | |
2d76519f | 2298 | |
2299 | if (ts->type == BT_INTEGER && ts->kind == 4 && gfc_option.flag_integer4_kind == 8) | |
2300 | ts->kind = 8; | |
2301 | ||
2302 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2303 | { | |
2304 | if (ts->kind == 4) | |
2305 | { | |
2306 | if (gfc_option.flag_real4_kind == 8) | |
2307 | ts->kind = 8; | |
2308 | if (gfc_option.flag_real4_kind == 10) | |
2309 | ts->kind = 10; | |
2310 | if (gfc_option.flag_real4_kind == 16) | |
2311 | ts->kind = 16; | |
2312 | } | |
2313 | ||
2314 | if (ts->kind == 8) | |
2315 | { | |
2316 | if (gfc_option.flag_real8_kind == 4) | |
2317 | ts->kind = 4; | |
2318 | if (gfc_option.flag_real8_kind == 10) | |
2319 | ts->kind = 10; | |
2320 | if (gfc_option.flag_real8_kind == 16) | |
2321 | ts->kind = 16; | |
2322 | } | |
2323 | } | |
2324 | ||
c5d33754 | 2325 | /* Return what we know from the test(s). */ |
2326 | return m; | |
4ee9c684 | 2327 | |
2328 | no_match: | |
2329 | gfc_free_expr (e); | |
cbb9e6aa | 2330 | gfc_current_locus = where; |
4ee9c684 | 2331 | return m; |
2332 | } | |
2333 | ||
2334 | ||
33399208 | 2335 | static match |
2336 | match_char_kind (int * kind, int * is_iso_c) | |
2337 | { | |
2338 | locus where; | |
2339 | gfc_expr *e; | |
2340 | match m, n; | |
2341 | const char *msg; | |
2342 | ||
2343 | m = MATCH_NO; | |
2344 | e = NULL; | |
2345 | where = gfc_current_locus; | |
2346 | ||
2347 | n = gfc_match_init_expr (&e); | |
c632ff3d | 2348 | |
077932f9 | 2349 | if (n != MATCH_YES && gfc_matching_function) |
c632ff3d | 2350 | { |
077932f9 | 2351 | /* The expression might include use-associated or imported |
8db94b3b | 2352 | parameters and try again after the specification |
077932f9 | 2353 | expressions. */ |
c632ff3d | 2354 | gfc_free_expr (e); |
c632ff3d | 2355 | gfc_undo_symbols (); |
2356 | return MATCH_YES; | |
2357 | } | |
2358 | ||
33399208 | 2359 | if (n == MATCH_NO) |
2360 | gfc_error ("Expected initialization expression at %C"); | |
2361 | if (n != MATCH_YES) | |
2362 | return MATCH_ERROR; | |
2363 | ||
2364 | if (e->rank != 0) | |
2365 | { | |
2366 | gfc_error ("Expected scalar initialization expression at %C"); | |
2367 | m = MATCH_ERROR; | |
2368 | goto no_match; | |
2369 | } | |
2370 | ||
2371 | msg = gfc_extract_int (e, kind); | |
2372 | *is_iso_c = e->ts.is_iso_c; | |
2373 | if (msg != NULL) | |
2374 | { | |
2375 | gfc_error (msg); | |
2376 | m = MATCH_ERROR; | |
2377 | goto no_match; | |
2378 | } | |
2379 | ||
2380 | gfc_free_expr (e); | |
2381 | ||
2382 | /* Ignore errors to this point, if we've gotten here. This means | |
2383 | we ignore the m=MATCH_ERROR from above. */ | |
2384 | if (gfc_validate_kind (BT_CHARACTER, *kind, true) < 0) | |
2385 | { | |
2386 | gfc_error ("Kind %d is not supported for CHARACTER at %C", *kind); | |
2387 | m = MATCH_ERROR; | |
2388 | } | |
2389 | else | |
2390 | /* All tests passed. */ | |
2391 | m = MATCH_YES; | |
2392 | ||
2393 | if (m == MATCH_ERROR) | |
2394 | gfc_current_locus = where; | |
8db94b3b | 2395 | |
33399208 | 2396 | /* Return what we know from the test(s). */ |
2397 | return m; | |
2398 | ||
2399 | no_match: | |
2400 | gfc_free_expr (e); | |
2401 | gfc_current_locus = where; | |
2402 | return m; | |
2403 | } | |
2404 | ||
10f5dcc0 | 2405 | |
4ee9c684 | 2406 | /* Match the various kind/length specifications in a CHARACTER |
2407 | declaration. We don't return MATCH_NO. */ | |
2408 | ||
10f5dcc0 | 2409 | match |
2410 | gfc_match_char_spec (gfc_typespec *ts) | |
4ee9c684 | 2411 | { |
33399208 | 2412 | int kind, seen_length, is_iso_c; |
4ee9c684 | 2413 | gfc_charlen *cl; |
2414 | gfc_expr *len; | |
2415 | match m; | |
3e715c81 | 2416 | bool deferred; |
33399208 | 2417 | |
4ee9c684 | 2418 | len = NULL; |
2419 | seen_length = 0; | |
33399208 | 2420 | kind = 0; |
2421 | is_iso_c = 0; | |
3e715c81 | 2422 | deferred = false; |
4ee9c684 | 2423 | |
2424 | /* Try the old-style specification first. */ | |
2425 | old_char_selector = 0; | |
2426 | ||
926b8757 | 2427 | m = match_char_length (&len, &deferred, true); |
4ee9c684 | 2428 | if (m != MATCH_NO) |
2429 | { | |
2430 | if (m == MATCH_YES) | |
2431 | old_char_selector = 1; | |
2432 | seen_length = 1; | |
2433 | goto done; | |
2434 | } | |
2435 | ||
2436 | m = gfc_match_char ('('); | |
2437 | if (m != MATCH_YES) | |
2438 | { | |
c5d33754 | 2439 | m = MATCH_YES; /* Character without length is a single char. */ |
4ee9c684 | 2440 | goto done; |
2441 | } | |
2442 | ||
c5d33754 | 2443 | /* Try the weird case: ( KIND = <int> [ , LEN = <len-param> ] ). */ |
4ee9c684 | 2444 | if (gfc_match (" kind =") == MATCH_YES) |
2445 | { | |
33399208 | 2446 | m = match_char_kind (&kind, &is_iso_c); |
8db94b3b | 2447 | |
4ee9c684 | 2448 | if (m == MATCH_ERROR) |
2449 | goto done; | |
2450 | if (m == MATCH_NO) | |
2451 | goto syntax; | |
2452 | ||
2453 | if (gfc_match (" , len =") == MATCH_NO) | |
2454 | goto rparen; | |
2455 | ||
3e715c81 | 2456 | m = char_len_param_value (&len, &deferred); |
4ee9c684 | 2457 | if (m == MATCH_NO) |
2458 | goto syntax; | |
2459 | if (m == MATCH_ERROR) | |
2460 | goto done; | |
2461 | seen_length = 1; | |
2462 | ||
2463 | goto rparen; | |
2464 | } | |
2465 | ||
f6d0e37a | 2466 | /* Try to match "LEN = <len-param>" or "LEN = <len-param>, KIND = <int>". */ |
4ee9c684 | 2467 | if (gfc_match (" len =") == MATCH_YES) |
2468 | { | |
3e715c81 | 2469 | m = char_len_param_value (&len, &deferred); |
4ee9c684 | 2470 | if (m == MATCH_NO) |
2471 | goto syntax; | |
2472 | if (m == MATCH_ERROR) | |
2473 | goto done; | |
2474 | seen_length = 1; | |
2475 | ||
2476 | if (gfc_match_char (')') == MATCH_YES) | |
2477 | goto done; | |
2478 | ||
2479 | if (gfc_match (" , kind =") != MATCH_YES) | |
2480 | goto syntax; | |
2481 | ||
33399208 | 2482 | if (match_char_kind (&kind, &is_iso_c) == MATCH_ERROR) |
2483 | goto done; | |
4ee9c684 | 2484 | |
2485 | goto rparen; | |
2486 | } | |
2487 | ||
f6d0e37a | 2488 | /* Try to match ( <len-param> ) or ( <len-param> , [ KIND = ] <int> ). */ |
3e715c81 | 2489 | m = char_len_param_value (&len, &deferred); |
4ee9c684 | 2490 | if (m == MATCH_NO) |
2491 | goto syntax; | |
2492 | if (m == MATCH_ERROR) | |
2493 | goto done; | |
2494 | seen_length = 1; | |
2495 | ||
2496 | m = gfc_match_char (')'); | |
2497 | if (m == MATCH_YES) | |
2498 | goto done; | |
2499 | ||
2500 | if (gfc_match_char (',') != MATCH_YES) | |
2501 | goto syntax; | |
2502 | ||
c5d33754 | 2503 | gfc_match (" kind ="); /* Gobble optional text. */ |
4ee9c684 | 2504 | |
33399208 | 2505 | m = match_char_kind (&kind, &is_iso_c); |
4ee9c684 | 2506 | if (m == MATCH_ERROR) |
2507 | goto done; | |
2508 | if (m == MATCH_NO) | |
2509 | goto syntax; | |
2510 | ||
2511 | rparen: | |
2512 | /* Require a right-paren at this point. */ | |
2513 | m = gfc_match_char (')'); | |
2514 | if (m == MATCH_YES) | |
2515 | goto done; | |
2516 | ||
2517 | syntax: | |
2518 | gfc_error ("Syntax error in CHARACTER declaration at %C"); | |
2519 | m = MATCH_ERROR; | |
a3cbe8cc | 2520 | gfc_free_expr (len); |
2521 | return m; | |
4ee9c684 | 2522 | |
2523 | done: | |
8d39570e | 2524 | /* Deal with character functions after USE and IMPORT statements. */ |
2525 | if (gfc_matching_function) | |
077932f9 | 2526 | { |
8d39570e | 2527 | gfc_free_expr (len); |
077932f9 | 2528 | gfc_undo_symbols (); |
2529 | return MATCH_YES; | |
2530 | } | |
2531 | ||
4ee9c684 | 2532 | if (m != MATCH_YES) |
2533 | { | |
2534 | gfc_free_expr (len); | |
2535 | return m; | |
2536 | } | |
2537 | ||
2538 | /* Do some final massaging of the length values. */ | |
d270ce52 | 2539 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
4ee9c684 | 2540 | |
2541 | if (seen_length == 0) | |
126387b5 | 2542 | cl->length = gfc_get_int_expr (gfc_default_integer_kind, NULL, 1); |
4ee9c684 | 2543 | else |
2fe2caa6 | 2544 | cl->length = len; |
4ee9c684 | 2545 | |
eeebe20b | 2546 | ts->u.cl = cl; |
33399208 | 2547 | ts->kind = kind == 0 ? gfc_default_character_kind : kind; |
3e715c81 | 2548 | ts->deferred = deferred; |
4ee9c684 | 2549 | |
df084314 | 2550 | /* We have to know if it was a C interoperable kind so we can |
c5d33754 | 2551 | do accurate type checking of bind(c) procs, etc. */ |
33399208 | 2552 | if (kind != 0) |
df084314 | 2553 | /* Mark this as C interoperable if being declared with one |
33399208 | 2554 | of the named constants from iso_c_binding. */ |
2555 | ts->is_c_interop = is_iso_c; | |
c5d33754 | 2556 | else if (len != NULL) |
33399208 | 2557 | /* Here, we might have parsed something such as: character(c_char) |
2558 | In this case, the parsing code above grabs the c_char when | |
2559 | looking for the length (line 1690, roughly). it's the last | |
2560 | testcase for parsing the kind params of a character variable. | |
2561 | However, it's not actually the length. this seems like it | |
8db94b3b | 2562 | could be an error. |
33399208 | 2563 | To see if the user used a C interop kind, test the expr |
2564 | of the so called length, and see if it's C interoperable. */ | |
2565 | ts->is_c_interop = len->ts.is_iso_c; | |
8db94b3b | 2566 | |
4ee9c684 | 2567 | return MATCH_YES; |
2568 | } | |
2569 | ||
2570 | ||
e8152f13 | 2571 | /* Matches a declaration-type-spec (F03:R502). If successful, sets the ts |
2572 | structure to the matched specification. This is necessary for FUNCTION and | |
4ee9c684 | 2573 | IMPLICIT statements. |
2574 | ||
e14bee04 | 2575 | If implicit_flag is nonzero, then we don't check for the optional |
39351103 | 2576 | kind specification. Not doing so is needed for matching an IMPLICIT |
4ee9c684 | 2577 | statement correctly. */ |
2578 | ||
67a51c8e | 2579 | match |
e8152f13 | 2580 | gfc_match_decl_type_spec (gfc_typespec *ts, int implicit_flag) |
4ee9c684 | 2581 | { |
2582 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c2958b6b | 2583 | gfc_symbol *sym, *dt_sym; |
4ee9c684 | 2584 | match m; |
e0be6f02 | 2585 | char c; |
f446fb22 | 2586 | bool seen_deferred_kind, matched_type; |
c2958b6b | 2587 | const char *dt_name; |
4ee9c684 | 2588 | |
077932f9 | 2589 | /* A belt and braces check that the typespec is correctly being treated |
2590 | as a deferred characteristic association. */ | |
2591 | seen_deferred_kind = (gfc_current_state () == COMP_FUNCTION) | |
8d39570e | 2592 | && (gfc_current_block ()->result->ts.kind == -1) |
2593 | && (ts->kind == -1); | |
4ee9c684 | 2594 | gfc_clear_ts (ts); |
077932f9 | 2595 | if (seen_deferred_kind) |
2596 | ts->kind = -1; | |
4ee9c684 | 2597 | |
c5d33754 | 2598 | /* Clear the current binding label, in case one is given. */ |
7b2060ba | 2599 | curr_binding_label = NULL; |
c5d33754 | 2600 | |
25b29122 | 2601 | if (gfc_match (" byte") == MATCH_YES) |
2602 | { | |
60e19868 | 2603 | if (!gfc_notify_std (GFC_STD_GNU, "BYTE type at %C")) |
25b29122 | 2604 | return MATCH_ERROR; |
2605 | ||
2606 | if (gfc_validate_kind (BT_INTEGER, 1, true) < 0) | |
2607 | { | |
2608 | gfc_error ("BYTE type used at %C " | |
2609 | "is not available on the target machine"); | |
2610 | return MATCH_ERROR; | |
2611 | } | |
e14bee04 | 2612 | |
25b29122 | 2613 | ts->type = BT_INTEGER; |
2614 | ts->kind = 1; | |
2615 | return MATCH_YES; | |
2616 | } | |
2617 | ||
f446fb22 | 2618 | |
8c2d8d6d | 2619 | m = gfc_match (" type ("); |
f446fb22 | 2620 | matched_type = (m == MATCH_YES); |
8c2d8d6d | 2621 | if (matched_type) |
2622 | { | |
2623 | gfc_gobble_whitespace (); | |
2624 | if (gfc_peek_ascii_char () == '*') | |
2625 | { | |
2626 | if ((m = gfc_match ("*)")) != MATCH_YES) | |
2627 | return m; | |
2628 | if (gfc_current_state () == COMP_DERIVED) | |
2629 | { | |
2630 | gfc_error ("Assumed type at %C is not allowed for components"); | |
2631 | return MATCH_ERROR; | |
2632 | } | |
60e19868 | 2633 | if (!gfc_notify_std (GFC_STD_F2008_TS, "Assumed type " |
2634 | "at %C")) | |
8c2d8d6d | 2635 | return MATCH_ERROR; |
2636 | ts->type = BT_ASSUMED; | |
2637 | return MATCH_YES; | |
2638 | } | |
2639 | ||
2640 | m = gfc_match ("%n", name); | |
2641 | matched_type = (m == MATCH_YES); | |
2642 | } | |
2643 | ||
f446fb22 | 2644 | if ((matched_type && strcmp ("integer", name) == 0) |
2645 | || (!matched_type && gfc_match (" integer") == MATCH_YES)) | |
4ee9c684 | 2646 | { |
2647 | ts->type = BT_INTEGER; | |
b8a891cb | 2648 | ts->kind = gfc_default_integer_kind; |
4ee9c684 | 2649 | goto get_kind; |
2650 | } | |
2651 | ||
f446fb22 | 2652 | if ((matched_type && strcmp ("character", name) == 0) |
2653 | || (!matched_type && gfc_match (" character") == MATCH_YES)) | |
4ee9c684 | 2654 | { |
f446fb22 | 2655 | if (matched_type |
60e19868 | 2656 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
2657 | "intrinsic-type-spec at %C")) | |
f446fb22 | 2658 | return MATCH_ERROR; |
2659 | ||
4ee9c684 | 2660 | ts->type = BT_CHARACTER; |
39351103 | 2661 | if (implicit_flag == 0) |
f446fb22 | 2662 | m = gfc_match_char_spec (ts); |
39351103 | 2663 | else |
f446fb22 | 2664 | m = MATCH_YES; |
2665 | ||
2666 | if (matched_type && m == MATCH_YES && gfc_match_char (')') != MATCH_YES) | |
2667 | m = MATCH_ERROR; | |
2668 | ||
2669 | return m; | |
4ee9c684 | 2670 | } |
2671 | ||
f446fb22 | 2672 | if ((matched_type && strcmp ("real", name) == 0) |
2673 | || (!matched_type && gfc_match (" real") == MATCH_YES)) | |
4ee9c684 | 2674 | { |
2675 | ts->type = BT_REAL; | |
b8a891cb | 2676 | ts->kind = gfc_default_real_kind; |
4ee9c684 | 2677 | goto get_kind; |
2678 | } | |
2679 | ||
f446fb22 | 2680 | if ((matched_type |
2681 | && (strcmp ("doubleprecision", name) == 0 | |
2682 | || (strcmp ("double", name) == 0 | |
2683 | && gfc_match (" precision") == MATCH_YES))) | |
2684 | || (!matched_type && gfc_match (" double precision") == MATCH_YES)) | |
4ee9c684 | 2685 | { |
f446fb22 | 2686 | if (matched_type |
60e19868 | 2687 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
2688 | "intrinsic-type-spec at %C")) | |
f446fb22 | 2689 | return MATCH_ERROR; |
2690 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
2691 | return MATCH_ERROR; | |
2692 | ||
4ee9c684 | 2693 | ts->type = BT_REAL; |
b8a891cb | 2694 | ts->kind = gfc_default_double_kind; |
4ee9c684 | 2695 | return MATCH_YES; |
2696 | } | |
2697 | ||
f446fb22 | 2698 | if ((matched_type && strcmp ("complex", name) == 0) |
2699 | || (!matched_type && gfc_match (" complex") == MATCH_YES)) | |
4ee9c684 | 2700 | { |
2701 | ts->type = BT_COMPLEX; | |
b8a891cb | 2702 | ts->kind = gfc_default_complex_kind; |
4ee9c684 | 2703 | goto get_kind; |
2704 | } | |
2705 | ||
f446fb22 | 2706 | if ((matched_type |
2707 | && (strcmp ("doublecomplex", name) == 0 | |
2708 | || (strcmp ("double", name) == 0 | |
2709 | && gfc_match (" complex") == MATCH_YES))) | |
2710 | || (!matched_type && gfc_match (" double complex") == MATCH_YES)) | |
4ee9c684 | 2711 | { |
60e19868 | 2712 | if (!gfc_notify_std (GFC_STD_GNU, "DOUBLE COMPLEX at %C")) |
f446fb22 | 2713 | return MATCH_ERROR; |
2714 | ||
2715 | if (matched_type | |
60e19868 | 2716 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
2717 | "intrinsic-type-spec at %C")) | |
f446fb22 | 2718 | return MATCH_ERROR; |
2719 | ||
2720 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
be7f01a1 | 2721 | return MATCH_ERROR; |
2722 | ||
4ee9c684 | 2723 | ts->type = BT_COMPLEX; |
b8a891cb | 2724 | ts->kind = gfc_default_double_kind; |
4ee9c684 | 2725 | return MATCH_YES; |
2726 | } | |
2727 | ||
f446fb22 | 2728 | if ((matched_type && strcmp ("logical", name) == 0) |
2729 | || (!matched_type && gfc_match (" logical") == MATCH_YES)) | |
4ee9c684 | 2730 | { |
2731 | ts->type = BT_LOGICAL; | |
b8a891cb | 2732 | ts->kind = gfc_default_logical_kind; |
4ee9c684 | 2733 | goto get_kind; |
2734 | } | |
2735 | ||
f446fb22 | 2736 | if (matched_type) |
2737 | m = gfc_match_char (')'); | |
2738 | ||
1de1b1a9 | 2739 | if (m == MATCH_YES) |
2740 | ts->type = BT_DERIVED; | |
2741 | else | |
8ca7f89c | 2742 | { |
fa102e56 | 2743 | /* Match CLASS declarations. */ |
2744 | m = gfc_match (" class ( * )"); | |
2745 | if (m == MATCH_ERROR) | |
2746 | return MATCH_ERROR; | |
2747 | else if (m == MATCH_YES) | |
2748 | { | |
a90fe829 | 2749 | gfc_symbol *upe; |
2750 | gfc_symtree *st; | |
2751 | ts->type = BT_CLASS; | |
8db94b3b | 2752 | gfc_find_symbol ("STAR", gfc_current_ns, 1, &upe); |
a90fe829 | 2753 | if (upe == NULL) |
2754 | { | |
8db94b3b | 2755 | upe = gfc_new_symbol ("STAR", gfc_current_ns); |
2756 | st = gfc_new_symtree (&gfc_current_ns->sym_root, "STAR"); | |
a90fe829 | 2757 | st->n.sym = upe; |
2758 | gfc_set_sym_referenced (upe); | |
2759 | upe->refs++; | |
2760 | upe->ts.type = BT_VOID; | |
2761 | upe->attr.unlimited_polymorphic = 1; | |
2762 | /* This is essential to force the construction of | |
2763 | unlimited polymorphic component class containers. */ | |
2764 | upe->attr.zero_comp = 1; | |
60e19868 | 2765 | if (!gfc_add_flavor (&upe->attr, FL_DERIVED, NULL, |
2766 | &gfc_current_locus)) | |
fa102e56 | 2767 | return MATCH_ERROR; |
2768 | } | |
a90fe829 | 2769 | else |
2770 | { | |
8db94b3b | 2771 | st = gfc_find_symtree (gfc_current_ns->sym_root, "STAR"); |
a90fe829 | 2772 | if (st == NULL) |
8db94b3b | 2773 | st = gfc_new_symtree (&gfc_current_ns->sym_root, "STAR"); |
a90fe829 | 2774 | st->n.sym = upe; |
2775 | upe->refs++; | |
2776 | } | |
2777 | ts->u.derived = upe; | |
2778 | return m; | |
2779 | } | |
fa102e56 | 2780 | |
8ca7f89c | 2781 | m = gfc_match (" class ( %n )", name); |
2782 | if (m != MATCH_YES) | |
2783 | return m; | |
1de1b1a9 | 2784 | ts->type = BT_CLASS; |
8ca7f89c | 2785 | |
60e19868 | 2786 | if (!gfc_notify_std (GFC_STD_F2003, "CLASS statement at %C")) |
e8152f13 | 2787 | return MATCH_ERROR; |
8ca7f89c | 2788 | } |
4ee9c684 | 2789 | |
077932f9 | 2790 | /* Defer association of the derived type until the end of the |
2791 | specification block. However, if the derived type can be | |
8db94b3b | 2792 | found, add it to the typespec. */ |
077932f9 | 2793 | if (gfc_matching_function) |
67a51c8e | 2794 | { |
eeebe20b | 2795 | ts->u.derived = NULL; |
077932f9 | 2796 | if (gfc_current_state () != COMP_INTERFACE |
2797 | && !gfc_find_symbol (name, NULL, 1, &sym) && sym) | |
c2958b6b | 2798 | { |
2799 | sym = gfc_find_dt_in_generic (sym); | |
2800 | ts->u.derived = sym; | |
2801 | } | |
67a51c8e | 2802 | return MATCH_YES; |
2803 | } | |
2804 | ||
2805 | /* Search for the name but allow the components to be defined later. If | |
2806 | type = -1, this typespec has been seen in a function declaration but | |
c2958b6b | 2807 | the type could not be accessed at that point. The actual derived type is |
df084314 | 2808 | stored in a symtree with the first letter of the name capitalized; the |
c2958b6b | 2809 | symtree with the all lower-case name contains the associated |
2810 | generic function. */ | |
2811 | dt_name = gfc_get_string ("%c%s", | |
2812 | (char) TOUPPER ((unsigned char) name[0]), | |
2813 | (const char*)&name[1]); | |
077932f9 | 2814 | sym = NULL; |
c2958b6b | 2815 | dt_sym = NULL; |
2816 | if (ts->kind != -1) | |
4ee9c684 | 2817 | { |
c2958b6b | 2818 | gfc_get_ha_symbol (name, &sym); |
2819 | if (sym->generic && gfc_find_symbol (dt_name, NULL, 0, &dt_sym)) | |
2820 | { | |
2821 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
2822 | return MATCH_ERROR; | |
2823 | } | |
2824 | if (sym->generic && !dt_sym) | |
2825 | dt_sym = gfc_find_dt_in_generic (sym); | |
4ee9c684 | 2826 | } |
67a51c8e | 2827 | else if (ts->kind == -1) |
2828 | { | |
077932f9 | 2829 | int iface = gfc_state_stack->previous->state != COMP_INTERFACE |
2830 | || gfc_current_ns->has_import_set; | |
c2958b6b | 2831 | gfc_find_symbol (name, NULL, iface, &sym); |
2832 | if (sym && sym->generic && gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
8db94b3b | 2833 | { |
67a51c8e | 2834 | gfc_error ("Type name '%s' at %C is ambiguous", name); |
2835 | return MATCH_ERROR; | |
2836 | } | |
c2958b6b | 2837 | if (sym && sym->generic && !dt_sym) |
2838 | dt_sym = gfc_find_dt_in_generic (sym); | |
67a51c8e | 2839 | |
077932f9 | 2840 | ts->kind = 0; |
67a51c8e | 2841 | if (sym == NULL) |
2842 | return MATCH_NO; | |
2843 | } | |
4ee9c684 | 2844 | |
c2958b6b | 2845 | if ((sym->attr.flavor != FL_UNKNOWN |
2846 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.generic)) | |
2847 | || sym->attr.subroutine) | |
2848 | { | |
2849 | gfc_error ("Type name '%s' at %C conflicts with previously declared " | |
2850 | "entity at %L, which has the same name", name, | |
2851 | &sym->declared_at); | |
2852 | return MATCH_ERROR; | |
2853 | } | |
4ee9c684 | 2854 | |
077932f9 | 2855 | gfc_set_sym_referenced (sym); |
c2958b6b | 2856 | if (!sym->attr.generic |
60e19868 | 2857 | && !gfc_add_generic (&sym->attr, sym->name, NULL)) |
c2958b6b | 2858 | return MATCH_ERROR; |
2859 | ||
2860 | if (!sym->attr.function | |
60e19868 | 2861 | && !gfc_add_function (&sym->attr, sym->name, NULL)) |
c2958b6b | 2862 | return MATCH_ERROR; |
2863 | ||
2864 | if (!dt_sym) | |
2865 | { | |
2866 | gfc_interface *intr, *head; | |
2867 | ||
2868 | /* Use upper case to save the actual derived-type symbol. */ | |
2869 | gfc_get_symbol (dt_name, NULL, &dt_sym); | |
2870 | dt_sym->name = gfc_get_string (sym->name); | |
2871 | head = sym->generic; | |
2872 | intr = gfc_get_interface (); | |
2873 | intr->sym = dt_sym; | |
2874 | intr->where = gfc_current_locus; | |
2875 | intr->next = head; | |
2876 | sym->generic = intr; | |
2877 | sym->attr.if_source = IFSRC_DECL; | |
2878 | } | |
2879 | ||
2880 | gfc_set_sym_referenced (dt_sym); | |
2881 | ||
2882 | if (dt_sym->attr.flavor != FL_DERIVED | |
60e19868 | 2883 | && !gfc_add_flavor (&dt_sym->attr, FL_DERIVED, sym->name, NULL)) |
c2958b6b | 2884 | return MATCH_ERROR; |
2885 | ||
2886 | ts->u.derived = dt_sym; | |
4ee9c684 | 2887 | |
2888 | return MATCH_YES; | |
2889 | ||
2890 | get_kind: | |
f446fb22 | 2891 | if (matched_type |
60e19868 | 2892 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
2893 | "intrinsic-type-spec at %C")) | |
f446fb22 | 2894 | return MATCH_ERROR; |
2895 | ||
4ee9c684 | 2896 | /* For all types except double, derived and character, look for an |
2897 | optional kind specifier. MATCH_NO is actually OK at this point. */ | |
39351103 | 2898 | if (implicit_flag == 1) |
f446fb22 | 2899 | { |
2900 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
2901 | return MATCH_ERROR; | |
2902 | ||
2903 | return MATCH_YES; | |
2904 | } | |
4ee9c684 | 2905 | |
18f3698a | 2906 | if (gfc_current_form == FORM_FREE) |
2907 | { | |
2c89e2a0 | 2908 | c = gfc_peek_ascii_char (); |
2909 | if (!gfc_is_whitespace (c) && c != '*' && c != '(' | |
1a9745d2 | 2910 | && c != ':' && c != ',') |
f446fb22 | 2911 | { |
2912 | if (matched_type && c == ')') | |
2913 | { | |
2914 | gfc_next_ascii_char (); | |
2915 | return MATCH_YES; | |
2916 | } | |
2917 | return MATCH_NO; | |
2918 | } | |
18f3698a | 2919 | } |
2920 | ||
67a51c8e | 2921 | m = gfc_match_kind_spec (ts, false); |
4ee9c684 | 2922 | if (m == MATCH_NO && ts->type != BT_CHARACTER) |
2923 | m = gfc_match_old_kind_spec (ts); | |
2924 | ||
f446fb22 | 2925 | if (matched_type && gfc_match_char (')') != MATCH_YES) |
2926 | return MATCH_ERROR; | |
2927 | ||
077932f9 | 2928 | /* Defer association of the KIND expression of function results |
2929 | until after USE and IMPORT statements. */ | |
2930 | if ((gfc_current_state () == COMP_NONE && gfc_error_flag_test ()) | |
2931 | || gfc_matching_function) | |
2932 | return MATCH_YES; | |
2933 | ||
4ee9c684 | 2934 | if (m == MATCH_NO) |
2935 | m = MATCH_YES; /* No kind specifier found. */ | |
2936 | ||
2937 | return m; | |
2938 | } | |
2939 | ||
2940 | ||
39351103 | 2941 | /* Match an IMPLICIT NONE statement. Actually, this statement is |
2942 | already matched in parse.c, or we would not end up here in the | |
2943 | first place. So the only thing we need to check, is if there is | |
2944 | trailing garbage. If not, the match is successful. */ | |
2945 | ||
2946 | match | |
2947 | gfc_match_implicit_none (void) | |
2948 | { | |
0daab503 | 2949 | char c; |
2950 | match m; | |
2951 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
2952 | bool type = false; | |
2953 | bool external = false; | |
94fea777 | 2954 | locus cur_loc = gfc_current_locus; |
2955 | ||
2956 | if (gfc_current_ns->seen_implicit_none | |
2957 | || gfc_current_ns->has_implicit_none_export) | |
2958 | { | |
2959 | gfc_error ("Duplicate IMPLICIT NONE statement at %C"); | |
2960 | return MATCH_ERROR; | |
2961 | } | |
0daab503 | 2962 | |
2963 | gfc_gobble_whitespace (); | |
2964 | c = gfc_peek_ascii_char (); | |
2965 | if (c == '(') | |
2966 | { | |
2967 | (void) gfc_next_ascii_char (); | |
2968 | if (!gfc_notify_std (GFC_STD_F2015, "IMPORT NONE with spec list at %C")) | |
2969 | return MATCH_ERROR; | |
94fea777 | 2970 | |
2971 | gfc_gobble_whitespace (); | |
2972 | if (gfc_peek_ascii_char () == ')') | |
0daab503 | 2973 | { |
94fea777 | 2974 | (void) gfc_next_ascii_char (); |
2975 | type = true; | |
2976 | } | |
2977 | else | |
2978 | for(;;) | |
2979 | { | |
2980 | m = gfc_match (" %n", name); | |
2981 | if (m != MATCH_YES) | |
2982 | return MATCH_ERROR; | |
0daab503 | 2983 | |
94fea777 | 2984 | if (strcmp (name, "type") == 0) |
2985 | type = true; | |
2986 | else if (strcmp (name, "external") == 0) | |
2987 | external = true; | |
2988 | else | |
2989 | return MATCH_ERROR; | |
0daab503 | 2990 | |
94fea777 | 2991 | gfc_gobble_whitespace (); |
2992 | c = gfc_next_ascii_char (); | |
2993 | if (c == ',') | |
2994 | continue; | |
2995 | if (c == ')') | |
2996 | break; | |
2997 | return MATCH_ERROR; | |
2998 | } | |
0daab503 | 2999 | } |
3000 | else | |
3001 | type = true; | |
3002 | ||
3003 | if (gfc_match_eos () != MATCH_YES) | |
3004 | return MATCH_ERROR; | |
3005 | ||
94fea777 | 3006 | gfc_set_implicit_none (type, external, &cur_loc); |
0daab503 | 3007 | |
3008 | return MATCH_YES; | |
39351103 | 3009 | } |
3010 | ||
3011 | ||
3012 | /* Match the letter range(s) of an IMPLICIT statement. */ | |
3013 | ||
3014 | static match | |
b70528c7 | 3015 | match_implicit_range (void) |
39351103 | 3016 | { |
e0be6f02 | 3017 | char c, c1, c2; |
3018 | int inner; | |
39351103 | 3019 | locus cur_loc; |
3020 | ||
3021 | cur_loc = gfc_current_locus; | |
3022 | ||
3023 | gfc_gobble_whitespace (); | |
e0be6f02 | 3024 | c = gfc_next_ascii_char (); |
39351103 | 3025 | if (c != '(') |
3026 | { | |
3027 | gfc_error ("Missing character range in IMPLICIT at %C"); | |
3028 | goto bad; | |
3029 | } | |
3030 | ||
3031 | inner = 1; | |
3032 | while (inner) | |
3033 | { | |
3034 | gfc_gobble_whitespace (); | |
e0be6f02 | 3035 | c1 = gfc_next_ascii_char (); |
39351103 | 3036 | if (!ISALPHA (c1)) |
3037 | goto bad; | |
3038 | ||
3039 | gfc_gobble_whitespace (); | |
e0be6f02 | 3040 | c = gfc_next_ascii_char (); |
39351103 | 3041 | |
3042 | switch (c) | |
3043 | { | |
3044 | case ')': | |
f6d0e37a | 3045 | inner = 0; /* Fall through. */ |
39351103 | 3046 | |
3047 | case ',': | |
3048 | c2 = c1; | |
3049 | break; | |
3050 | ||
3051 | case '-': | |
3052 | gfc_gobble_whitespace (); | |
e0be6f02 | 3053 | c2 = gfc_next_ascii_char (); |
39351103 | 3054 | if (!ISALPHA (c2)) |
3055 | goto bad; | |
3056 | ||
3057 | gfc_gobble_whitespace (); | |
e0be6f02 | 3058 | c = gfc_next_ascii_char (); |
39351103 | 3059 | |
3060 | if ((c != ',') && (c != ')')) | |
3061 | goto bad; | |
3062 | if (c == ')') | |
3063 | inner = 0; | |
3064 | ||
3065 | break; | |
3066 | ||
3067 | default: | |
3068 | goto bad; | |
3069 | } | |
3070 | ||
3071 | if (c1 > c2) | |
3072 | { | |
3073 | gfc_error ("Letters must be in alphabetic order in " | |
3074 | "IMPLICIT statement at %C"); | |
3075 | goto bad; | |
3076 | } | |
3077 | ||
3078 | /* See if we can add the newly matched range to the pending | |
1a9745d2 | 3079 | implicits from this IMPLICIT statement. We do not check for |
3080 | conflicts with whatever earlier IMPLICIT statements may have | |
3081 | set. This is done when we've successfully finished matching | |
3082 | the current one. */ | |
60e19868 | 3083 | if (!gfc_add_new_implicit_range (c1, c2)) |
39351103 | 3084 | goto bad; |
3085 | } | |
3086 | ||
3087 | return MATCH_YES; | |
3088 | ||
3089 | bad: | |
3090 | gfc_syntax_error (ST_IMPLICIT); | |
3091 | ||
3092 | gfc_current_locus = cur_loc; | |
3093 | return MATCH_ERROR; | |
3094 | } | |
3095 | ||
3096 | ||
3097 | /* Match an IMPLICIT statement, storing the types for | |
3098 | gfc_set_implicit() if the statement is accepted by the parser. | |
3099 | There is a strange looking, but legal syntactic construction | |
3100 | possible. It looks like: | |
3101 | ||
3102 | IMPLICIT INTEGER (a-b) (c-d) | |
3103 | ||
3104 | This is legal if "a-b" is a constant expression that happens to | |
3105 | equal one of the legal kinds for integers. The real problem | |
3106 | happens with an implicit specification that looks like: | |
3107 | ||
3108 | IMPLICIT INTEGER (a-b) | |
3109 | ||
3110 | In this case, a typespec matcher that is "greedy" (as most of the | |
3111 | matchers are) gobbles the character range as a kindspec, leaving | |
3112 | nothing left. We therefore have to go a bit more slowly in the | |
3113 | matching process by inhibiting the kindspec checking during | |
3114 | typespec matching and checking for a kind later. */ | |
3115 | ||
3116 | match | |
3117 | gfc_match_implicit (void) | |
3118 | { | |
3119 | gfc_typespec ts; | |
3120 | locus cur_loc; | |
e0be6f02 | 3121 | char c; |
39351103 | 3122 | match m; |
3123 | ||
0daab503 | 3124 | if (gfc_current_ns->seen_implicit_none) |
3125 | { | |
3126 | gfc_error ("IMPLICIT statement at %C following an IMPLICIT NONE (type) " | |
3127 | "statement"); | |
3128 | return MATCH_ERROR; | |
3129 | } | |
3130 | ||
52179f31 | 3131 | gfc_clear_ts (&ts); |
3132 | ||
39351103 | 3133 | /* We don't allow empty implicit statements. */ |
3134 | if (gfc_match_eos () == MATCH_YES) | |
3135 | { | |
3136 | gfc_error ("Empty IMPLICIT statement at %C"); | |
3137 | return MATCH_ERROR; | |
3138 | } | |
3139 | ||
39351103 | 3140 | do |
3141 | { | |
b70528c7 | 3142 | /* First cleanup. */ |
3143 | gfc_clear_new_implicit (); | |
3144 | ||
39351103 | 3145 | /* A basic type is mandatory here. */ |
e8152f13 | 3146 | m = gfc_match_decl_type_spec (&ts, 1); |
39351103 | 3147 | if (m == MATCH_ERROR) |
3148 | goto error; | |
3149 | if (m == MATCH_NO) | |
3150 | goto syntax; | |
3151 | ||
3152 | cur_loc = gfc_current_locus; | |
b70528c7 | 3153 | m = match_implicit_range (); |
39351103 | 3154 | |
3155 | if (m == MATCH_YES) | |
3156 | { | |
b70528c7 | 3157 | /* We may have <TYPE> (<RANGE>). */ |
39351103 | 3158 | gfc_gobble_whitespace (); |
94fea777 | 3159 | c = gfc_peek_ascii_char (); |
3160 | if (c == ',' || c == '\n' || c == ';' || c == '!') | |
b70528c7 | 3161 | { |
3162 | /* Check for CHARACTER with no length parameter. */ | |
eeebe20b | 3163 | if (ts.type == BT_CHARACTER && !ts.u.cl) |
b70528c7 | 3164 | { |
b8a891cb | 3165 | ts.kind = gfc_default_character_kind; |
d270ce52 | 3166 | ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
126387b5 | 3167 | ts.u.cl->length = gfc_get_int_expr (gfc_default_integer_kind, |
3168 | NULL, 1); | |
b70528c7 | 3169 | } |
3170 | ||
3171 | /* Record the Successful match. */ | |
60e19868 | 3172 | if (!gfc_merge_new_implicit (&ts)) |
b70528c7 | 3173 | return MATCH_ERROR; |
94fea777 | 3174 | if (c == ',') |
3175 | c = gfc_next_ascii_char (); | |
3176 | else if (gfc_match_eos () == MATCH_ERROR) | |
3177 | goto error; | |
b70528c7 | 3178 | continue; |
3179 | } | |
39351103 | 3180 | |
3181 | gfc_current_locus = cur_loc; | |
3182 | } | |
3183 | ||
b70528c7 | 3184 | /* Discard the (incorrectly) matched range. */ |
3185 | gfc_clear_new_implicit (); | |
3186 | ||
3187 | /* Last chance -- check <TYPE> <SELECTOR> (<RANGE>). */ | |
3188 | if (ts.type == BT_CHARACTER) | |
10f5dcc0 | 3189 | m = gfc_match_char_spec (&ts); |
b70528c7 | 3190 | else |
39351103 | 3191 | { |
67a51c8e | 3192 | m = gfc_match_kind_spec (&ts, false); |
39351103 | 3193 | if (m == MATCH_NO) |
b70528c7 | 3194 | { |
3195 | m = gfc_match_old_kind_spec (&ts); | |
3196 | if (m == MATCH_ERROR) | |
3197 | goto error; | |
3198 | if (m == MATCH_NO) | |
3199 | goto syntax; | |
3200 | } | |
39351103 | 3201 | } |
b70528c7 | 3202 | if (m == MATCH_ERROR) |
3203 | goto error; | |
39351103 | 3204 | |
b70528c7 | 3205 | m = match_implicit_range (); |
39351103 | 3206 | if (m == MATCH_ERROR) |
3207 | goto error; | |
3208 | if (m == MATCH_NO) | |
3209 | goto syntax; | |
3210 | ||
3211 | gfc_gobble_whitespace (); | |
e0be6f02 | 3212 | c = gfc_next_ascii_char (); |
94fea777 | 3213 | if (c != ',' && gfc_match_eos () != MATCH_YES) |
39351103 | 3214 | goto syntax; |
3215 | ||
60e19868 | 3216 | if (!gfc_merge_new_implicit (&ts)) |
b70528c7 | 3217 | return MATCH_ERROR; |
39351103 | 3218 | } |
3219 | while (c == ','); | |
3220 | ||
b70528c7 | 3221 | return MATCH_YES; |
39351103 | 3222 | |
3223 | syntax: | |
3224 | gfc_syntax_error (ST_IMPLICIT); | |
3225 | ||
3226 | error: | |
3227 | return MATCH_ERROR; | |
3228 | } | |
3229 | ||
f6d0e37a | 3230 | |
d67fc9ae | 3231 | match |
3232 | gfc_match_import (void) | |
3233 | { | |
3234 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
3235 | match m; | |
3236 | gfc_symbol *sym; | |
3237 | gfc_symtree *st; | |
3238 | ||
f6d0e37a | 3239 | if (gfc_current_ns->proc_name == NULL |
3240 | || gfc_current_ns->proc_name->attr.if_source != IFSRC_IFBODY) | |
d67fc9ae | 3241 | { |
3242 | gfc_error ("IMPORT statement at %C only permitted in " | |
3243 | "an INTERFACE body"); | |
3244 | return MATCH_ERROR; | |
3245 | } | |
3246 | ||
60e19868 | 3247 | if (!gfc_notify_std (GFC_STD_F2003, "IMPORT statement at %C")) |
d67fc9ae | 3248 | return MATCH_ERROR; |
3249 | ||
3250 | if (gfc_match_eos () == MATCH_YES) | |
3251 | { | |
3252 | /* All host variables should be imported. */ | |
3253 | gfc_current_ns->has_import_set = 1; | |
3254 | return MATCH_YES; | |
3255 | } | |
3256 | ||
3257 | if (gfc_match (" ::") == MATCH_YES) | |
3258 | { | |
3259 | if (gfc_match_eos () == MATCH_YES) | |
1a9745d2 | 3260 | { |
3261 | gfc_error ("Expecting list of named entities at %C"); | |
3262 | return MATCH_ERROR; | |
3263 | } | |
d67fc9ae | 3264 | } |
3265 | ||
3266 | for(;;) | |
3267 | { | |
495e197c | 3268 | sym = NULL; |
d67fc9ae | 3269 | m = gfc_match (" %n", name); |
3270 | switch (m) | |
3271 | { | |
3272 | case MATCH_YES: | |
096d4ad9 | 3273 | if (gfc_current_ns->parent != NULL |
f6d0e37a | 3274 | && gfc_find_symbol (name, gfc_current_ns->parent, 1, &sym)) |
096d4ad9 | 3275 | { |
3276 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
3277 | return MATCH_ERROR; | |
3278 | } | |
6b010511 | 3279 | else if (!sym && gfc_current_ns->proc_name->ns->parent != NULL |
f6d0e37a | 3280 | && gfc_find_symbol (name, |
3281 | gfc_current_ns->proc_name->ns->parent, | |
3282 | 1, &sym)) | |
1a9745d2 | 3283 | { |
3284 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
3285 | return MATCH_ERROR; | |
3286 | } | |
3287 | ||
3288 | if (sym == NULL) | |
3289 | { | |
3290 | gfc_error ("Cannot IMPORT '%s' from host scoping unit " | |
3291 | "at %C - does not exist.", name); | |
3292 | return MATCH_ERROR; | |
3293 | } | |
3294 | ||
d67dd34f | 3295 | if (gfc_find_symtree (gfc_current_ns->sym_root, name)) |
1a9745d2 | 3296 | { |
3297 | gfc_warning ("'%s' is already IMPORTed from host scoping unit " | |
3298 | "at %C.", name); | |
3299 | goto next_item; | |
3300 | } | |
3301 | ||
d67dd34f | 3302 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); |
1a9745d2 | 3303 | st->n.sym = sym; |
3304 | sym->refs++; | |
c723595c | 3305 | sym->attr.imported = 1; |
d67fc9ae | 3306 | |
c2958b6b | 3307 | if (sym->attr.generic && (sym = gfc_find_dt_in_generic (sym))) |
3308 | { | |
3309 | /* The actual derived type is stored in a symtree with the first | |
df084314 | 3310 | letter of the name capitalized; the symtree with the all |
293d72e0 | 3311 | lower-case name contains the associated generic function. */ |
c2958b6b | 3312 | st = gfc_new_symtree (&gfc_current_ns->sym_root, |
3313 | gfc_get_string ("%c%s", | |
d67dd34f | 3314 | (char) TOUPPER ((unsigned char) name[0]), |
3315 | &name[1])); | |
c2958b6b | 3316 | st->n.sym = sym; |
3317 | sym->refs++; | |
3318 | sym->attr.imported = 1; | |
3319 | } | |
3320 | ||
d67fc9ae | 3321 | goto next_item; |
3322 | ||
3323 | case MATCH_NO: | |
3324 | break; | |
3325 | ||
3326 | case MATCH_ERROR: | |
3327 | return MATCH_ERROR; | |
3328 | } | |
3329 | ||
3330 | next_item: | |
3331 | if (gfc_match_eos () == MATCH_YES) | |
3332 | break; | |
3333 | if (gfc_match_char (',') != MATCH_YES) | |
3334 | goto syntax; | |
3335 | } | |
3336 | ||
3337 | return MATCH_YES; | |
3338 | ||
3339 | syntax: | |
3340 | gfc_error ("Syntax error in IMPORT statement at %C"); | |
3341 | return MATCH_ERROR; | |
3342 | } | |
39351103 | 3343 | |
f6d0e37a | 3344 | |
c72e5f7e | 3345 | /* A minimal implementation of gfc_match without whitespace, escape |
3346 | characters or variable arguments. Returns true if the next | |
3347 | characters match the TARGET template exactly. */ | |
3348 | ||
3349 | static bool | |
3350 | match_string_p (const char *target) | |
3351 | { | |
3352 | const char *p; | |
3353 | ||
3354 | for (p = target; *p; p++) | |
e0be6f02 | 3355 | if ((char) gfc_next_ascii_char () != *p) |
c72e5f7e | 3356 | return false; |
3357 | return true; | |
3358 | } | |
3359 | ||
4ee9c684 | 3360 | /* Matches an attribute specification including array specs. If |
3361 | successful, leaves the variables current_attr and current_as | |
3362 | holding the specification. Also sets the colon_seen variable for | |
3363 | later use by matchers associated with initializations. | |
3364 | ||
3365 | This subroutine is a little tricky in the sense that we don't know | |
3366 | if we really have an attr-spec until we hit the double colon. | |
3367 | Until that time, we can only return MATCH_NO. This forces us to | |
3368 | check for duplicate specification at this level. */ | |
3369 | ||
3370 | static match | |
3371 | match_attr_spec (void) | |
3372 | { | |
4ee9c684 | 3373 | /* Modifiers that can exist in a type statement. */ |
d55c3689 | 3374 | enum |
4ee9c684 | 3375 | { GFC_DECL_BEGIN = 0, |
3376 | DECL_ALLOCATABLE = GFC_DECL_BEGIN, DECL_DIMENSION, DECL_EXTERNAL, | |
3377 | DECL_IN, DECL_OUT, DECL_INOUT, DECL_INTRINSIC, DECL_OPTIONAL, | |
3ea52af3 | 3378 | DECL_PARAMETER, DECL_POINTER, DECL_PROTECTED, DECL_PRIVATE, |
3379 | DECL_PUBLIC, DECL_SAVE, DECL_TARGET, DECL_VALUE, DECL_VOLATILE, | |
b3c3927c | 3380 | DECL_IS_BIND_C, DECL_CODIMENSION, DECL_ASYNCHRONOUS, DECL_CONTIGUOUS, |
3381 | DECL_NONE, GFC_DECL_END /* Sentinel */ | |
d55c3689 | 3382 | }; |
4ee9c684 | 3383 | |
3384 | /* GFC_DECL_END is the sentinel, index starts at 0. */ | |
3385 | #define NUM_DECL GFC_DECL_END | |
3386 | ||
4ee9c684 | 3387 | locus start, seen_at[NUM_DECL]; |
3388 | int seen[NUM_DECL]; | |
9f1b7d17 | 3389 | unsigned int d; |
4ee9c684 | 3390 | const char *attr; |
3391 | match m; | |
60e19868 | 3392 | bool t; |
4ee9c684 | 3393 | |
3394 | gfc_clear_attr (¤t_attr); | |
cbb9e6aa | 3395 | start = gfc_current_locus; |
4ee9c684 | 3396 | |
3397 | current_as = NULL; | |
3398 | colon_seen = 0; | |
3399 | ||
3400 | /* See if we get all of the keywords up to the final double colon. */ | |
3401 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3402 | seen[d] = 0; | |
3403 | ||
3404 | for (;;) | |
3405 | { | |
e0be6f02 | 3406 | char ch; |
c5d33754 | 3407 | |
c72e5f7e | 3408 | d = DECL_NONE; |
3409 | gfc_gobble_whitespace (); | |
3410 | ||
e0be6f02 | 3411 | ch = gfc_next_ascii_char (); |
c72e5f7e | 3412 | if (ch == ':') |
3413 | { | |
3414 | /* This is the successful exit condition for the loop. */ | |
e0be6f02 | 3415 | if (gfc_next_ascii_char () == ':') |
c72e5f7e | 3416 | break; |
3417 | } | |
3418 | else if (ch == ',') | |
c5d33754 | 3419 | { |
c5d33754 | 3420 | gfc_gobble_whitespace (); |
e0be6f02 | 3421 | switch (gfc_peek_ascii_char ()) |
c5d33754 | 3422 | { |
c72e5f7e | 3423 | case 'a': |
738928be | 3424 | gfc_next_ascii_char (); |
3425 | switch (gfc_next_ascii_char ()) | |
3426 | { | |
3427 | case 'l': | |
3428 | if (match_string_p ("locatable")) | |
3429 | { | |
3430 | /* Matched "allocatable". */ | |
3431 | d = DECL_ALLOCATABLE; | |
3432 | } | |
3433 | break; | |
3434 | ||
3435 | case 's': | |
3436 | if (match_string_p ("ynchronous")) | |
3437 | { | |
3438 | /* Matched "asynchronous". */ | |
3439 | d = DECL_ASYNCHRONOUS; | |
3440 | } | |
3441 | break; | |
3442 | } | |
b3c3927c | 3443 | break; |
c72e5f7e | 3444 | |
3445 | case 'b': | |
c5d33754 | 3446 | /* Try and match the bind(c). */ |
75ae7f6c | 3447 | m = gfc_match_bind_c (NULL, true); |
5cf92482 | 3448 | if (m == MATCH_YES) |
c5d33754 | 3449 | d = DECL_IS_BIND_C; |
5cf92482 | 3450 | else if (m == MATCH_ERROR) |
3451 | goto cleanup; | |
c72e5f7e | 3452 | break; |
3453 | ||
aff518b0 | 3454 | case 'c': |
b3c3927c | 3455 | gfc_next_ascii_char (); |
3456 | if ('o' != gfc_next_ascii_char ()) | |
3457 | break; | |
3458 | switch (gfc_next_ascii_char ()) | |
3459 | { | |
3460 | case 'd': | |
3461 | if (match_string_p ("imension")) | |
3462 | { | |
3463 | d = DECL_CODIMENSION; | |
3464 | break; | |
3465 | } | |
3466 | case 'n': | |
3467 | if (match_string_p ("tiguous")) | |
3468 | { | |
3469 | d = DECL_CONTIGUOUS; | |
3470 | break; | |
3471 | } | |
3472 | } | |
aff518b0 | 3473 | break; |
3474 | ||
c72e5f7e | 3475 | case 'd': |
3476 | if (match_string_p ("dimension")) | |
3477 | d = DECL_DIMENSION; | |
3478 | break; | |
3479 | ||
3480 | case 'e': | |
3481 | if (match_string_p ("external")) | |
3482 | d = DECL_EXTERNAL; | |
3483 | break; | |
3484 | ||
3485 | case 'i': | |
3486 | if (match_string_p ("int")) | |
3487 | { | |
e0be6f02 | 3488 | ch = gfc_next_ascii_char (); |
c72e5f7e | 3489 | if (ch == 'e') |
3490 | { | |
3491 | if (match_string_p ("nt")) | |
3492 | { | |
3493 | /* Matched "intent". */ | |
3494 | /* TODO: Call match_intent_spec from here. */ | |
3495 | if (gfc_match (" ( in out )") == MATCH_YES) | |
3496 | d = DECL_INOUT; | |
3497 | else if (gfc_match (" ( in )") == MATCH_YES) | |
3498 | d = DECL_IN; | |
3499 | else if (gfc_match (" ( out )") == MATCH_YES) | |
3500 | d = DECL_OUT; | |
3501 | } | |
3502 | } | |
3503 | else if (ch == 'r') | |
3504 | { | |
3505 | if (match_string_p ("insic")) | |
3506 | { | |
3507 | /* Matched "intrinsic". */ | |
3508 | d = DECL_INTRINSIC; | |
3509 | } | |
3510 | } | |
3511 | } | |
3512 | break; | |
3513 | ||
3514 | case 'o': | |
3515 | if (match_string_p ("optional")) | |
3516 | d = DECL_OPTIONAL; | |
3517 | break; | |
3518 | ||
3519 | case 'p': | |
e0be6f02 | 3520 | gfc_next_ascii_char (); |
3521 | switch (gfc_next_ascii_char ()) | |
c72e5f7e | 3522 | { |
3523 | case 'a': | |
3524 | if (match_string_p ("rameter")) | |
3525 | { | |
3526 | /* Matched "parameter". */ | |
3527 | d = DECL_PARAMETER; | |
3528 | } | |
3529 | break; | |
3530 | ||
3531 | case 'o': | |
3532 | if (match_string_p ("inter")) | |
3533 | { | |
3534 | /* Matched "pointer". */ | |
3535 | d = DECL_POINTER; | |
3536 | } | |
3537 | break; | |
3538 | ||
3539 | case 'r': | |
e0be6f02 | 3540 | ch = gfc_next_ascii_char (); |
c72e5f7e | 3541 | if (ch == 'i') |
3542 | { | |
3543 | if (match_string_p ("vate")) | |
3544 | { | |
3545 | /* Matched "private". */ | |
3546 | d = DECL_PRIVATE; | |
3547 | } | |
3548 | } | |
3549 | else if (ch == 'o') | |
3550 | { | |
3551 | if (match_string_p ("tected")) | |
3552 | { | |
3553 | /* Matched "protected". */ | |
3554 | d = DECL_PROTECTED; | |
3555 | } | |
3556 | } | |
3557 | break; | |
3558 | ||
3559 | case 'u': | |
3560 | if (match_string_p ("blic")) | |
3561 | { | |
3562 | /* Matched "public". */ | |
3563 | d = DECL_PUBLIC; | |
3564 | } | |
3565 | break; | |
3566 | } | |
3567 | break; | |
3568 | ||
3569 | case 's': | |
3570 | if (match_string_p ("save")) | |
3571 | d = DECL_SAVE; | |
3572 | break; | |
3573 | ||
3574 | case 't': | |
3575 | if (match_string_p ("target")) | |
3576 | d = DECL_TARGET; | |
3577 | break; | |
3578 | ||
3579 | case 'v': | |
e0be6f02 | 3580 | gfc_next_ascii_char (); |
3581 | ch = gfc_next_ascii_char (); | |
c72e5f7e | 3582 | if (ch == 'a') |
3583 | { | |
3584 | if (match_string_p ("lue")) | |
3585 | { | |
3586 | /* Matched "value". */ | |
3587 | d = DECL_VALUE; | |
3588 | } | |
3589 | } | |
3590 | else if (ch == 'o') | |
3591 | { | |
3592 | if (match_string_p ("latile")) | |
3593 | { | |
3594 | /* Matched "volatile". */ | |
3595 | d = DECL_VOLATILE; | |
3596 | } | |
3597 | } | |
3598 | break; | |
c5d33754 | 3599 | } |
3600 | } | |
f3f9b222 | 3601 | |
c72e5f7e | 3602 | /* No double colon and no recognizable decl_type, so assume that |
3603 | we've been looking at something else the whole time. */ | |
3604 | if (d == DECL_NONE) | |
3605 | { | |
3606 | m = MATCH_NO; | |
3607 | goto cleanup; | |
3608 | } | |
e14bee04 | 3609 | |
7e221851 | 3610 | /* Check to make sure any parens are paired up correctly. */ |
3611 | if (gfc_match_parens () == MATCH_ERROR) | |
3612 | { | |
3613 | m = MATCH_ERROR; | |
3614 | goto cleanup; | |
3615 | } | |
3616 | ||
4ee9c684 | 3617 | seen[d]++; |
cbb9e6aa | 3618 | seen_at[d] = gfc_current_locus; |
4ee9c684 | 3619 | |
e97ac7c0 | 3620 | if (d == DECL_DIMENSION || d == DECL_CODIMENSION) |
4ee9c684 | 3621 | { |
e97ac7c0 | 3622 | gfc_array_spec *as = NULL; |
4ee9c684 | 3623 | |
e97ac7c0 | 3624 | m = gfc_match_array_spec (&as, d == DECL_DIMENSION, |
3625 | d == DECL_CODIMENSION); | |
3626 | ||
3627 | if (current_as == NULL) | |
3628 | current_as = as; | |
3629 | else if (m == MATCH_YES) | |
4ee9c684 | 3630 | { |
60e19868 | 3631 | if (!merge_array_spec (as, current_as, false)) |
9b58b4c7 | 3632 | m = MATCH_ERROR; |
434f0922 | 3633 | free (as); |
4ee9c684 | 3634 | } |
3635 | ||
aff518b0 | 3636 | if (m == MATCH_NO) |
3637 | { | |
e97ac7c0 | 3638 | if (d == DECL_CODIMENSION) |
3639 | gfc_error ("Missing codimension specification at %C"); | |
3640 | else | |
3641 | gfc_error ("Missing dimension specification at %C"); | |
aff518b0 | 3642 | m = MATCH_ERROR; |
3643 | } | |
3644 | ||
3645 | if (m == MATCH_ERROR) | |
3646 | goto cleanup; | |
3647 | } | |
4ee9c684 | 3648 | } |
3649 | ||
4ee9c684 | 3650 | /* Since we've seen a double colon, we have to be looking at an |
3651 | attr-spec. This means that we can now issue errors. */ | |
3652 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3653 | if (seen[d] > 1) | |
3654 | { | |
3655 | switch (d) | |
3656 | { | |
3657 | case DECL_ALLOCATABLE: | |
3658 | attr = "ALLOCATABLE"; | |
3659 | break; | |
738928be | 3660 | case DECL_ASYNCHRONOUS: |
3661 | attr = "ASYNCHRONOUS"; | |
3662 | break; | |
aff518b0 | 3663 | case DECL_CODIMENSION: |
3664 | attr = "CODIMENSION"; | |
3665 | break; | |
b3c3927c | 3666 | case DECL_CONTIGUOUS: |
3667 | attr = "CONTIGUOUS"; | |
3668 | break; | |
4ee9c684 | 3669 | case DECL_DIMENSION: |
3670 | attr = "DIMENSION"; | |
3671 | break; | |
3672 | case DECL_EXTERNAL: | |
3673 | attr = "EXTERNAL"; | |
3674 | break; | |
3675 | case DECL_IN: | |
3676 | attr = "INTENT (IN)"; | |
3677 | break; | |
3678 | case DECL_OUT: | |
3679 | attr = "INTENT (OUT)"; | |
3680 | break; | |
3681 | case DECL_INOUT: | |
3682 | attr = "INTENT (IN OUT)"; | |
3683 | break; | |
3684 | case DECL_INTRINSIC: | |
3685 | attr = "INTRINSIC"; | |
3686 | break; | |
3687 | case DECL_OPTIONAL: | |
3688 | attr = "OPTIONAL"; | |
3689 | break; | |
3690 | case DECL_PARAMETER: | |
3691 | attr = "PARAMETER"; | |
3692 | break; | |
3693 | case DECL_POINTER: | |
3694 | attr = "POINTER"; | |
3695 | break; | |
3ea52af3 | 3696 | case DECL_PROTECTED: |
3697 | attr = "PROTECTED"; | |
3698 | break; | |
4ee9c684 | 3699 | case DECL_PRIVATE: |
3700 | attr = "PRIVATE"; | |
3701 | break; | |
3702 | case DECL_PUBLIC: | |
3703 | attr = "PUBLIC"; | |
3704 | break; | |
3705 | case DECL_SAVE: | |
3706 | attr = "SAVE"; | |
3707 | break; | |
3708 | case DECL_TARGET: | |
3709 | attr = "TARGET"; | |
3710 | break; | |
c5d33754 | 3711 | case DECL_IS_BIND_C: |
3712 | attr = "IS_BIND_C"; | |
3713 | break; | |
3714 | case DECL_VALUE: | |
3715 | attr = "VALUE"; | |
3716 | break; | |
ef814c81 | 3717 | case DECL_VOLATILE: |
3718 | attr = "VOLATILE"; | |
3719 | break; | |
4ee9c684 | 3720 | default: |
f6d0e37a | 3721 | attr = NULL; /* This shouldn't happen. */ |
4ee9c684 | 3722 | } |
3723 | ||
3724 | gfc_error ("Duplicate %s attribute at %L", attr, &seen_at[d]); | |
3725 | m = MATCH_ERROR; | |
3726 | goto cleanup; | |
3727 | } | |
3728 | ||
3729 | /* Now that we've dealt with duplicate attributes, add the attributes | |
3730 | to the current attribute. */ | |
3731 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3732 | { | |
3733 | if (seen[d] == 0) | |
3734 | continue; | |
3735 | ||
3736 | if (gfc_current_state () == COMP_DERIVED | |
aff518b0 | 3737 | && d != DECL_DIMENSION && d != DECL_CODIMENSION |
3738 | && d != DECL_POINTER && d != DECL_PRIVATE | |
b3c3927c | 3739 | && d != DECL_PUBLIC && d != DECL_CONTIGUOUS && d != DECL_NONE) |
4ee9c684 | 3740 | { |
2294b616 | 3741 | if (d == DECL_ALLOCATABLE) |
3742 | { | |
60e19868 | 3743 | if (!gfc_notify_std (GFC_STD_F2003, "ALLOCATABLE " |
3744 | "attribute at %C in a TYPE definition")) | |
2294b616 | 3745 | { |
3746 | m = MATCH_ERROR; | |
3747 | goto cleanup; | |
3748 | } | |
1a9745d2 | 3749 | } |
3750 | else | |
2294b616 | 3751 | { |
3752 | gfc_error ("Attribute at %L is not allowed in a TYPE definition", | |
e14bee04 | 3753 | &seen_at[d]); |
2294b616 | 3754 | m = MATCH_ERROR; |
3755 | goto cleanup; | |
3756 | } | |
4ee9c684 | 3757 | } |
3758 | ||
ea13b9b7 | 3759 | if ((d == DECL_PRIVATE || d == DECL_PUBLIC) |
1a9745d2 | 3760 | && gfc_current_state () != COMP_MODULE) |
ea13b9b7 | 3761 | { |
3762 | if (d == DECL_PRIVATE) | |
3763 | attr = "PRIVATE"; | |
3764 | else | |
3765 | attr = "PUBLIC"; | |
e14bee04 | 3766 | if (gfc_current_state () == COMP_DERIVED |
3767 | && gfc_state_stack->previous | |
3768 | && gfc_state_stack->previous->state == COMP_MODULE) | |
3769 | { | |
60e19868 | 3770 | if (!gfc_notify_std (GFC_STD_F2003, "Attribute %s " |
3771 | "at %L in a TYPE definition", attr, | |
3772 | &seen_at[d])) | |
e14bee04 | 3773 | { |
3774 | m = MATCH_ERROR; | |
3775 | goto cleanup; | |
3776 | } | |
3777 | } | |
3778 | else | |
3779 | { | |
3780 | gfc_error ("%s attribute at %L is not allowed outside of the " | |
3781 | "specification part of a module", attr, &seen_at[d]); | |
3782 | m = MATCH_ERROR; | |
3783 | goto cleanup; | |
3784 | } | |
ea13b9b7 | 3785 | } |
3786 | ||
4ee9c684 | 3787 | switch (d) |
3788 | { | |
3789 | case DECL_ALLOCATABLE: | |
3790 | t = gfc_add_allocatable (¤t_attr, &seen_at[d]); | |
3791 | break; | |
3792 | ||
738928be | 3793 | case DECL_ASYNCHRONOUS: |
60e19868 | 3794 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS attribute at %C")) |
3795 | t = false; | |
738928be | 3796 | else |
3797 | t = gfc_add_asynchronous (¤t_attr, NULL, &seen_at[d]); | |
3798 | break; | |
3799 | ||
aff518b0 | 3800 | case DECL_CODIMENSION: |
3801 | t = gfc_add_codimension (¤t_attr, NULL, &seen_at[d]); | |
3802 | break; | |
3803 | ||
b3c3927c | 3804 | case DECL_CONTIGUOUS: |
60e19868 | 3805 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS attribute at %C")) |
3806 | t = false; | |
b3c3927c | 3807 | else |
3808 | t = gfc_add_contiguous (¤t_attr, NULL, &seen_at[d]); | |
3809 | break; | |
3810 | ||
4ee9c684 | 3811 | case DECL_DIMENSION: |
950683ed | 3812 | t = gfc_add_dimension (¤t_attr, NULL, &seen_at[d]); |
4ee9c684 | 3813 | break; |
3814 | ||
3815 | case DECL_EXTERNAL: | |
3816 | t = gfc_add_external (¤t_attr, &seen_at[d]); | |
3817 | break; | |
3818 | ||
3819 | case DECL_IN: | |
3820 | t = gfc_add_intent (¤t_attr, INTENT_IN, &seen_at[d]); | |
3821 | break; | |
3822 | ||
3823 | case DECL_OUT: | |
3824 | t = gfc_add_intent (¤t_attr, INTENT_OUT, &seen_at[d]); | |
3825 | break; | |
3826 | ||
3827 | case DECL_INOUT: | |
3828 | t = gfc_add_intent (¤t_attr, INTENT_INOUT, &seen_at[d]); | |
3829 | break; | |
3830 | ||
3831 | case DECL_INTRINSIC: | |
3832 | t = gfc_add_intrinsic (¤t_attr, &seen_at[d]); | |
3833 | break; | |
3834 | ||
3835 | case DECL_OPTIONAL: | |
3836 | t = gfc_add_optional (¤t_attr, &seen_at[d]); | |
3837 | break; | |
3838 | ||
3839 | case DECL_PARAMETER: | |
950683ed | 3840 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, &seen_at[d]); |
4ee9c684 | 3841 | break; |
3842 | ||
3843 | case DECL_POINTER: | |
3844 | t = gfc_add_pointer (¤t_attr, &seen_at[d]); | |
3845 | break; | |
3846 | ||
3ea52af3 | 3847 | case DECL_PROTECTED: |
3848 | if (gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
3849 | { | |
3850 | gfc_error ("PROTECTED at %C only allowed in specification " | |
3851 | "part of a module"); | |
60e19868 | 3852 | t = false; |
3ea52af3 | 3853 | break; |
3854 | } | |
3855 | ||
60e19868 | 3856 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED attribute at %C")) |
3857 | t = false; | |
3ea52af3 | 3858 | else |
3859 | t = gfc_add_protected (¤t_attr, NULL, &seen_at[d]); | |
3860 | break; | |
3861 | ||
4ee9c684 | 3862 | case DECL_PRIVATE: |
950683ed | 3863 | t = gfc_add_access (¤t_attr, ACCESS_PRIVATE, NULL, |
3864 | &seen_at[d]); | |
4ee9c684 | 3865 | break; |
3866 | ||
3867 | case DECL_PUBLIC: | |
950683ed | 3868 | t = gfc_add_access (¤t_attr, ACCESS_PUBLIC, NULL, |
3869 | &seen_at[d]); | |
4ee9c684 | 3870 | break; |
3871 | ||
3872 | case DECL_SAVE: | |
23d075f4 | 3873 | t = gfc_add_save (¤t_attr, SAVE_EXPLICIT, NULL, &seen_at[d]); |
4ee9c684 | 3874 | break; |
3875 | ||
3876 | case DECL_TARGET: | |
3877 | t = gfc_add_target (¤t_attr, &seen_at[d]); | |
3878 | break; | |
3879 | ||
c5d33754 | 3880 | case DECL_IS_BIND_C: |
3881 | t = gfc_add_is_bind_c(¤t_attr, NULL, &seen_at[d], 0); | |
3882 | break; | |
8db94b3b | 3883 | |
8f6339b6 | 3884 | case DECL_VALUE: |
60e19868 | 3885 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE attribute at %C")) |
3886 | t = false; | |
8f6339b6 | 3887 | else |
3888 | t = gfc_add_value (¤t_attr, NULL, &seen_at[d]); | |
3889 | break; | |
3890 | ||
ef814c81 | 3891 | case DECL_VOLATILE: |
60e19868 | 3892 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE attribute at %C")) |
3893 | t = false; | |
ef814c81 | 3894 | else |
3895 | t = gfc_add_volatile (¤t_attr, NULL, &seen_at[d]); | |
3896 | break; | |
3897 | ||
4ee9c684 | 3898 | default: |
3899 | gfc_internal_error ("match_attr_spec(): Bad attribute"); | |
3900 | } | |
3901 | ||
60e19868 | 3902 | if (!t) |
4ee9c684 | 3903 | { |
3904 | m = MATCH_ERROR; | |
3905 | goto cleanup; | |
3906 | } | |
3907 | } | |
3908 | ||
c25834c9 | 3909 | /* Since Fortran 2008 module variables implicitly have the SAVE attribute. */ |
3910 | if (gfc_current_state () == COMP_MODULE && !current_attr.save | |
3911 | && (gfc_option.allow_std & GFC_STD_F2008) != 0) | |
23d075f4 | 3912 | current_attr.save = SAVE_IMPLICIT; |
3913 | ||
4ee9c684 | 3914 | colon_seen = 1; |
3915 | return MATCH_YES; | |
3916 | ||
3917 | cleanup: | |
cbb9e6aa | 3918 | gfc_current_locus = start; |
4ee9c684 | 3919 | gfc_free_array_spec (current_as); |
3920 | current_as = NULL; | |
3921 | return m; | |
3922 | } | |
3923 | ||
3924 | ||
c5d33754 | 3925 | /* Set the binding label, dest_label, either with the binding label |
3926 | stored in the given gfc_typespec, ts, or if none was provided, it | |
3927 | will be the symbol name in all lower case, as required by the draft | |
3928 | (J3/04-007, section 15.4.1). If a binding label was given and | |
3929 | there is more than one argument (num_idents), it is an error. */ | |
3930 | ||
60e19868 | 3931 | static bool |
8db94b3b | 3932 | set_binding_label (const char **dest_label, const char *sym_name, |
1d8a57d8 | 3933 | int num_idents) |
c5d33754 | 3934 | { |
825718f9 | 3935 | if (num_idents > 1 && has_name_equals) |
c5d33754 | 3936 | { |
825718f9 | 3937 | gfc_error ("Multiple identifiers provided with " |
3938 | "single NAME= specifier at %C"); | |
60e19868 | 3939 | return false; |
825718f9 | 3940 | } |
c5d33754 | 3941 | |
7b2060ba | 3942 | if (curr_binding_label) |
df084314 | 3943 | /* Binding label given; store in temp holder till have sym. */ |
7b2060ba | 3944 | *dest_label = curr_binding_label; |
c5d33754 | 3945 | else |
3946 | { | |
3947 | /* No binding label given, and the NAME= specifier did not exist, | |
3948 | which means there was no NAME="". */ | |
3949 | if (sym_name != NULL && has_name_equals == 0) | |
7b2060ba | 3950 | *dest_label = IDENTIFIER_POINTER (get_identifier (sym_name)); |
c5d33754 | 3951 | } |
8db94b3b | 3952 | |
60e19868 | 3953 | return true; |
c5d33754 | 3954 | } |
3955 | ||
3956 | ||
3957 | /* Set the status of the given common block as being BIND(C) or not, | |
3958 | depending on the given parameter, is_bind_c. */ | |
3959 | ||
3960 | void | |
3961 | set_com_block_bind_c (gfc_common_head *com_block, int is_bind_c) | |
3962 | { | |
3963 | com_block->is_bind_c = is_bind_c; | |
3964 | return; | |
3965 | } | |
3966 | ||
3967 | ||
3968 | /* Verify that the given gfc_typespec is for a C interoperable type. */ | |
3969 | ||
60e19868 | 3970 | bool |
2564c57a | 3971 | gfc_verify_c_interop (gfc_typespec *ts) |
c5d33754 | 3972 | { |
eeebe20b | 3973 | if (ts->type == BT_DERIVED && ts->u.derived != NULL) |
5f9b1308 | 3974 | return (ts->u.derived->ts.is_c_interop || ts->u.derived->attr.is_bind_c) |
60e19868 | 3975 | ? true : false; |
2564c57a | 3976 | else if (ts->type == BT_CLASS) |
60e19868 | 3977 | return false; |
8c2d8d6d | 3978 | else if (ts->is_c_interop != 1 && ts->type != BT_ASSUMED) |
60e19868 | 3979 | return false; |
8c2d8d6d | 3980 | |
60e19868 | 3981 | return true; |
c5d33754 | 3982 | } |
3983 | ||
3984 | ||
3985 | /* Verify that the variables of a given common block, which has been | |
3986 | defined with the attribute specifier bind(c), to be of a C | |
3987 | interoperable type. Errors will be reported here, if | |
3988 | encountered. */ | |
3989 | ||
60e19868 | 3990 | bool |
c5d33754 | 3991 | verify_com_block_vars_c_interop (gfc_common_head *com_block) |
3992 | { | |
3993 | gfc_symbol *curr_sym = NULL; | |
60e19868 | 3994 | bool retval = true; |
c5d33754 | 3995 | |
3996 | curr_sym = com_block->head; | |
8db94b3b | 3997 | |
c5d33754 | 3998 | /* Make sure we have at least one symbol. */ |
3999 | if (curr_sym == NULL) | |
4000 | return retval; | |
4001 | ||
4002 | /* Here we know we have a symbol, so we'll execute this loop | |
4003 | at least once. */ | |
4004 | do | |
4005 | { | |
4006 | /* The second to last param, 1, says this is in a common block. */ | |
4007 | retval = verify_bind_c_sym (curr_sym, &(curr_sym->ts), 1, com_block); | |
4008 | curr_sym = curr_sym->common_next; | |
8db94b3b | 4009 | } while (curr_sym != NULL); |
c5d33754 | 4010 | |
4011 | return retval; | |
4012 | } | |
4013 | ||
4014 | ||
4015 | /* Verify that a given BIND(C) symbol is C interoperable. If it is not, | |
4016 | an appropriate error message is reported. */ | |
4017 | ||
60e19868 | 4018 | bool |
c5d33754 | 4019 | verify_bind_c_sym (gfc_symbol *tmp_sym, gfc_typespec *ts, |
4020 | int is_in_common, gfc_common_head *com_block) | |
4021 | { | |
1f2ab120 | 4022 | bool bind_c_function = false; |
60e19868 | 4023 | bool retval = true; |
4f7bb9ec | 4024 | |
1f2ab120 | 4025 | if (tmp_sym->attr.function && tmp_sym->attr.is_bind_c) |
4026 | bind_c_function = true; | |
4027 | ||
4f7bb9ec | 4028 | if (tmp_sym->attr.function && tmp_sym->result != NULL) |
4029 | { | |
4030 | tmp_sym = tmp_sym->result; | |
4031 | /* Make sure it wasn't an implicitly typed result. */ | |
bf79c656 | 4032 | if (tmp_sym->attr.implicit_type && warn_c_binding_type) |
4f7bb9ec | 4033 | { |
4034 | gfc_warning ("Implicitly declared BIND(C) function '%s' at " | |
4035 | "%L may not be C interoperable", tmp_sym->name, | |
4036 | &tmp_sym->declared_at); | |
4037 | tmp_sym->ts.f90_type = tmp_sym->ts.type; | |
4038 | /* Mark it as C interoperable to prevent duplicate warnings. */ | |
4039 | tmp_sym->ts.is_c_interop = 1; | |
4040 | tmp_sym->attr.is_c_interop = 1; | |
4041 | } | |
4042 | } | |
1f2ab120 | 4043 | |
c5d33754 | 4044 | /* Here, we know we have the bind(c) attribute, so if we have |
4045 | enough type info, then verify that it's a C interop kind. | |
4046 | The info could be in the symbol already, or possibly still in | |
4047 | the given ts (current_ts), so look in both. */ | |
8db94b3b | 4048 | if (tmp_sym->ts.type != BT_UNKNOWN || ts->type != BT_UNKNOWN) |
c5d33754 | 4049 | { |
60e19868 | 4050 | if (!gfc_verify_c_interop (&(tmp_sym->ts))) |
c5d33754 | 4051 | { |
4052 | /* See if we're dealing with a sym in a common block or not. */ | |
bf79c656 | 4053 | if (is_in_common == 1 && warn_c_binding_type) |
c5d33754 | 4054 | { |
4055 | gfc_warning ("Variable '%s' in common block '%s' at %L " | |
4056 | "may not be a C interoperable " | |
4057 | "kind though common block '%s' is BIND(C)", | |
4058 | tmp_sym->name, com_block->name, | |
4059 | &(tmp_sym->declared_at), com_block->name); | |
4060 | } | |
4061 | else | |
4062 | { | |
4063 | if (tmp_sym->ts.type == BT_DERIVED || ts->type == BT_DERIVED) | |
4064 | gfc_error ("Type declaration '%s' at %L is not C " | |
4065 | "interoperable but it is BIND(C)", | |
4066 | tmp_sym->name, &(tmp_sym->declared_at)); | |
bf79c656 | 4067 | else if (warn_c_binding_type) |
c5d33754 | 4068 | gfc_warning ("Variable '%s' at %L " |
4069 | "may not be a C interoperable " | |
4070 | "kind but it is bind(c)", | |
4071 | tmp_sym->name, &(tmp_sym->declared_at)); | |
4072 | } | |
4073 | } | |
8db94b3b | 4074 | |
c5d33754 | 4075 | /* Variables declared w/in a common block can't be bind(c) |
4076 | since there's no way for C to see these variables, so there's | |
4077 | semantically no reason for the attribute. */ | |
4078 | if (is_in_common == 1 && tmp_sym->attr.is_bind_c == 1) | |
4079 | { | |
4080 | gfc_error ("Variable '%s' in common block '%s' at " | |
4081 | "%L cannot be declared with BIND(C) " | |
4082 | "since it is not a global", | |
4083 | tmp_sym->name, com_block->name, | |
4084 | &(tmp_sym->declared_at)); | |
60e19868 | 4085 | retval = false; |
c5d33754 | 4086 | } |
8db94b3b | 4087 | |
c5d33754 | 4088 | /* Scalar variables that are bind(c) can not have the pointer |
4089 | or allocatable attributes. */ | |
4090 | if (tmp_sym->attr.is_bind_c == 1) | |
4091 | { | |
4092 | if (tmp_sym->attr.pointer == 1) | |
4093 | { | |
4094 | gfc_error ("Variable '%s' at %L cannot have both the " | |
4095 | "POINTER and BIND(C) attributes", | |
4096 | tmp_sym->name, &(tmp_sym->declared_at)); | |
60e19868 | 4097 | retval = false; |
c5d33754 | 4098 | } |
4099 | ||
4100 | if (tmp_sym->attr.allocatable == 1) | |
4101 | { | |
4102 | gfc_error ("Variable '%s' at %L cannot have both the " | |
4103 | "ALLOCATABLE and BIND(C) attributes", | |
4104 | tmp_sym->name, &(tmp_sym->declared_at)); | |
60e19868 | 4105 | retval = false; |
c5d33754 | 4106 | } |
4107 | ||
1f2ab120 | 4108 | } |
4109 | ||
4110 | /* If it is a BIND(C) function, make sure the return value is a | |
4111 | scalar value. The previous tests in this function made sure | |
4112 | the type is interoperable. */ | |
4113 | if (bind_c_function && tmp_sym->as != NULL) | |
4114 | gfc_error ("Return type of BIND(C) function '%s' at %L cannot " | |
4115 | "be an array", tmp_sym->name, &(tmp_sym->declared_at)); | |
4116 | ||
4117 | /* BIND(C) functions can not return a character string. */ | |
4118 | if (bind_c_function && tmp_sym->ts.type == BT_CHARACTER) | |
eeebe20b | 4119 | if (tmp_sym->ts.u.cl == NULL || tmp_sym->ts.u.cl->length == NULL |
4120 | || tmp_sym->ts.u.cl->length->expr_type != EXPR_CONSTANT | |
4121 | || mpz_cmp_si (tmp_sym->ts.u.cl->length->value.integer, 1) != 0) | |
1f2ab120 | 4122 | gfc_error ("Return type of BIND(C) function '%s' at %L cannot " |
c5d33754 | 4123 | "be a character string", tmp_sym->name, |
4124 | &(tmp_sym->declared_at)); | |
c5d33754 | 4125 | } |
4126 | ||
4127 | /* See if the symbol has been marked as private. If it has, make sure | |
4128 | there is no binding label and warn the user if there is one. */ | |
4129 | if (tmp_sym->attr.access == ACCESS_PRIVATE | |
7b2060ba | 4130 | && tmp_sym->binding_label) |
c5d33754 | 4131 | /* Use gfc_warning_now because we won't say that the symbol fails |
4132 | just because of this. */ | |
bf79c656 | 4133 | gfc_warning_now ("Symbol %qs at %L is marked PRIVATE but has been " |
4134 | "given the binding label %qs", tmp_sym->name, | |
c5d33754 | 4135 | &(tmp_sym->declared_at), tmp_sym->binding_label); |
4136 | ||
4137 | return retval; | |
4138 | } | |
4139 | ||
4140 | ||
4141 | /* Set the appropriate fields for a symbol that's been declared as | |
4142 | BIND(C) (the is_bind_c flag and the binding label), and verify that | |
4143 | the type is C interoperable. Errors are reported by the functions | |
4144 | used to set/test these fields. */ | |
4145 | ||
60e19868 | 4146 | bool |
c5d33754 | 4147 | set_verify_bind_c_sym (gfc_symbol *tmp_sym, int num_idents) |
4148 | { | |
60e19868 | 4149 | bool retval = true; |
8db94b3b | 4150 | |
c5d33754 | 4151 | /* TODO: Do we need to make sure the vars aren't marked private? */ |
4152 | ||
4153 | /* Set the is_bind_c bit in symbol_attribute. */ | |
4154 | gfc_add_is_bind_c (&(tmp_sym->attr), tmp_sym->name, &gfc_current_locus, 0); | |
4155 | ||
60e19868 | 4156 | if (!set_binding_label (&tmp_sym->binding_label, tmp_sym->name, num_idents)) |
4157 | return false; | |
c5d33754 | 4158 | |
4159 | return retval; | |
4160 | } | |
4161 | ||
4162 | ||
4163 | /* Set the fields marking the given common block as BIND(C), including | |
4164 | a binding label, and report any errors encountered. */ | |
4165 | ||
60e19868 | 4166 | bool |
c5d33754 | 4167 | set_verify_bind_c_com_block (gfc_common_head *com_block, int num_idents) |
4168 | { | |
60e19868 | 4169 | bool retval = true; |
8db94b3b | 4170 | |
c5d33754 | 4171 | /* destLabel, common name, typespec (which may have binding label). */ |
60e19868 | 4172 | if (!set_binding_label (&com_block->binding_label, com_block->name, |
4173 | num_idents)) | |
4174 | return false; | |
c5d33754 | 4175 | |
4176 | /* Set the given common block (com_block) to being bind(c) (1). */ | |
4177 | set_com_block_bind_c (com_block, 1); | |
4178 | ||
4179 | return retval; | |
4180 | } | |
4181 | ||
4182 | ||
4183 | /* Retrieve the list of one or more identifiers that the given bind(c) | |
4184 | attribute applies to. */ | |
4185 | ||
60e19868 | 4186 | bool |
c5d33754 | 4187 | get_bind_c_idents (void) |
4188 | { | |
4189 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4190 | int num_idents = 0; | |
4191 | gfc_symbol *tmp_sym = NULL; | |
4192 | match found_id; | |
4193 | gfc_common_head *com_block = NULL; | |
8db94b3b | 4194 | |
c5d33754 | 4195 | if (gfc_match_name (name) == MATCH_YES) |
4196 | { | |
4197 | found_id = MATCH_YES; | |
4198 | gfc_get_ha_symbol (name, &tmp_sym); | |
4199 | } | |
4200 | else if (match_common_name (name) == MATCH_YES) | |
4201 | { | |
4202 | found_id = MATCH_YES; | |
4203 | com_block = gfc_get_common (name, 0); | |
4204 | } | |
4205 | else | |
4206 | { | |
4207 | gfc_error ("Need either entity or common block name for " | |
4208 | "attribute specification statement at %C"); | |
60e19868 | 4209 | return false; |
c5d33754 | 4210 | } |
8db94b3b | 4211 | |
c5d33754 | 4212 | /* Save the current identifier and look for more. */ |
4213 | do | |
4214 | { | |
4215 | /* Increment the number of identifiers found for this spec stmt. */ | |
4216 | num_idents++; | |
4217 | ||
4218 | /* Make sure we have a sym or com block, and verify that it can | |
4219 | be bind(c). Set the appropriate field(s) and look for more | |
4220 | identifiers. */ | |
8db94b3b | 4221 | if (tmp_sym != NULL || com_block != NULL) |
c5d33754 | 4222 | { |
4223 | if (tmp_sym != NULL) | |
4224 | { | |
60e19868 | 4225 | if (!set_verify_bind_c_sym (tmp_sym, num_idents)) |
4226 | return false; | |
c5d33754 | 4227 | } |
4228 | else | |
4229 | { | |
60e19868 | 4230 | if (!set_verify_bind_c_com_block (com_block, num_idents)) |
4231 | return false; | |
c5d33754 | 4232 | } |
8db94b3b | 4233 | |
c5d33754 | 4234 | /* Look to see if we have another identifier. */ |
4235 | tmp_sym = NULL; | |
4236 | if (gfc_match_eos () == MATCH_YES) | |
4237 | found_id = MATCH_NO; | |
4238 | else if (gfc_match_char (',') != MATCH_YES) | |
4239 | found_id = MATCH_NO; | |
4240 | else if (gfc_match_name (name) == MATCH_YES) | |
4241 | { | |
4242 | found_id = MATCH_YES; | |
4243 | gfc_get_ha_symbol (name, &tmp_sym); | |
4244 | } | |
4245 | else if (match_common_name (name) == MATCH_YES) | |
4246 | { | |
4247 | found_id = MATCH_YES; | |
4248 | com_block = gfc_get_common (name, 0); | |
4249 | } | |
4250 | else | |
4251 | { | |
4252 | gfc_error ("Missing entity or common block name for " | |
4253 | "attribute specification statement at %C"); | |
60e19868 | 4254 | return false; |
c5d33754 | 4255 | } |
4256 | } | |
4257 | else | |
4258 | { | |
4259 | gfc_internal_error ("Missing symbol"); | |
4260 | } | |
4261 | } while (found_id == MATCH_YES); | |
4262 | ||
4263 | /* if we get here we were successful */ | |
60e19868 | 4264 | return true; |
c5d33754 | 4265 | } |
4266 | ||
4267 | ||
4268 | /* Try and match a BIND(C) attribute specification statement. */ | |
8db94b3b | 4269 | |
c5d33754 | 4270 | match |
4271 | gfc_match_bind_c_stmt (void) | |
4272 | { | |
4273 | match found_match = MATCH_NO; | |
4274 | gfc_typespec *ts; | |
4275 | ||
4276 | ts = ¤t_ts; | |
8db94b3b | 4277 | |
c5d33754 | 4278 | /* This may not be necessary. */ |
4279 | gfc_clear_ts (ts); | |
4280 | /* Clear the temporary binding label holder. */ | |
7b2060ba | 4281 | curr_binding_label = NULL; |
c5d33754 | 4282 | |
4283 | /* Look for the bind(c). */ | |
75ae7f6c | 4284 | found_match = gfc_match_bind_c (NULL, true); |
c5d33754 | 4285 | |
4286 | if (found_match == MATCH_YES) | |
4287 | { | |
7a914593 | 4288 | if (!gfc_notify_std (GFC_STD_F2003, "BIND(C) statement at %C")) |
4289 | return MATCH_ERROR; | |
4290 | ||
c5d33754 | 4291 | /* Look for the :: now, but it is not required. */ |
4292 | gfc_match (" :: "); | |
4293 | ||
4294 | /* Get the identifier(s) that needs to be updated. This may need to | |
4295 | change to hand the flag(s) for the attr specified so all identifiers | |
4296 | found can have all appropriate parts updated (assuming that the same | |
4297 | spec stmt can have multiple attrs, such as both bind(c) and | |
4298 | allocatable...). */ | |
60e19868 | 4299 | if (!get_bind_c_idents ()) |
c5d33754 | 4300 | /* Error message should have printed already. */ |
4301 | return MATCH_ERROR; | |
4302 | } | |
4303 | ||
4304 | return found_match; | |
4305 | } | |
4306 | ||
4307 | ||
4ee9c684 | 4308 | /* Match a data declaration statement. */ |
4309 | ||
4310 | match | |
4311 | gfc_match_data_decl (void) | |
4312 | { | |
4313 | gfc_symbol *sym; | |
4314 | match m; | |
3923b69f | 4315 | int elem; |
4ee9c684 | 4316 | |
c5d33754 | 4317 | num_idents_on_line = 0; |
8db94b3b | 4318 | |
e8152f13 | 4319 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
4ee9c684 | 4320 | if (m != MATCH_YES) |
4321 | return m; | |
4322 | ||
b3704193 | 4323 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
4324 | && gfc_current_state () != COMP_DERIVED) | |
4ee9c684 | 4325 | { |
eeebe20b | 4326 | sym = gfc_use_derived (current_ts.u.derived); |
4ee9c684 | 4327 | |
4328 | if (sym == NULL) | |
4329 | { | |
4330 | m = MATCH_ERROR; | |
4331 | goto cleanup; | |
4332 | } | |
4333 | ||
eeebe20b | 4334 | current_ts.u.derived = sym; |
4ee9c684 | 4335 | } |
4336 | ||
4337 | m = match_attr_spec (); | |
4338 | if (m == MATCH_ERROR) | |
4339 | { | |
4340 | m = MATCH_NO; | |
4341 | goto cleanup; | |
4342 | } | |
4343 | ||
a90fe829 | 4344 | if (current_ts.type == BT_CLASS |
4345 | && current_ts.u.derived->attr.unlimited_polymorphic) | |
4346 | goto ok; | |
4347 | ||
b3704193 | 4348 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
4349 | && current_ts.u.derived->components == NULL | |
eeebe20b | 4350 | && !current_ts.u.derived->attr.zero_comp) |
4ee9c684 | 4351 | { |
4352 | ||
4353 | if (current_attr.pointer && gfc_current_state () == COMP_DERIVED) | |
4354 | goto ok; | |
4355 | ||
eeebe20b | 4356 | gfc_find_symbol (current_ts.u.derived->name, |
d67dd34f | 4357 | current_ts.u.derived->ns, 1, &sym); |
4ee9c684 | 4358 | |
40cf8078 | 4359 | /* Any symbol that we find had better be a type definition |
1a9745d2 | 4360 | which has its components defined. */ |
40cf8078 | 4361 | if (sym != NULL && sym->attr.flavor == FL_DERIVED |
eeebe20b | 4362 | && (current_ts.u.derived->components != NULL |
4363 | || current_ts.u.derived->attr.zero_comp)) | |
4ee9c684 | 4364 | goto ok; |
4365 | ||
a1e76cd9 | 4366 | gfc_error ("Derived type at %C has not been previously defined " |
4367 | "and so cannot appear in a derived type definition"); | |
4368 | m = MATCH_ERROR; | |
4369 | goto cleanup; | |
4ee9c684 | 4370 | } |
4371 | ||
4372 | ok: | |
4373 | /* If we have an old-style character declaration, and no new-style | |
4374 | attribute specifications, then there a comma is optional between | |
4375 | the type specification and the variable list. */ | |
4376 | if (m == MATCH_NO && current_ts.type == BT_CHARACTER && old_char_selector) | |
4377 | gfc_match_char (','); | |
4378 | ||
3923b69f | 4379 | /* Give the types/attributes to symbols that follow. Give the element |
4380 | a number so that repeat character length expressions can be copied. */ | |
4381 | elem = 1; | |
4ee9c684 | 4382 | for (;;) |
4383 | { | |
c5d33754 | 4384 | num_idents_on_line++; |
3923b69f | 4385 | m = variable_decl (elem++); |
4ee9c684 | 4386 | if (m == MATCH_ERROR) |
4387 | goto cleanup; | |
4388 | if (m == MATCH_NO) | |
4389 | break; | |
4390 | ||
4391 | if (gfc_match_eos () == MATCH_YES) | |
4392 | goto cleanup; | |
4393 | if (gfc_match_char (',') != MATCH_YES) | |
4394 | break; | |
4395 | } | |
4396 | ||
8f0bdb23 | 4397 | if (gfc_error_flag_test () == 0) |
4398 | gfc_error ("Syntax error in data declaration at %C"); | |
4ee9c684 | 4399 | m = MATCH_ERROR; |
4400 | ||
af29c1f0 | 4401 | gfc_free_data_all (gfc_current_ns); |
4402 | ||
4ee9c684 | 4403 | cleanup: |
4404 | gfc_free_array_spec (current_as); | |
4405 | current_as = NULL; | |
4406 | return m; | |
4407 | } | |
4408 | ||
4409 | ||
4410 | /* Match a prefix associated with a function or subroutine | |
4411 | declaration. If the typespec pointer is nonnull, then a typespec | |
4412 | can be matched. Note that if nothing matches, MATCH_YES is | |
4413 | returned (the null string was matched). */ | |
4414 | ||
077932f9 | 4415 | match |
4416 | gfc_match_prefix (gfc_typespec *ts) | |
4ee9c684 | 4417 | { |
5b11d932 | 4418 | bool seen_type; |
4e4ea00b | 4419 | bool seen_impure; |
4420 | bool found_prefix; | |
4ee9c684 | 4421 | |
4422 | gfc_clear_attr (¤t_attr); | |
4e4ea00b | 4423 | seen_type = false; |
4424 | seen_impure = false; | |
4ee9c684 | 4425 | |
d1645c7b | 4426 | gcc_assert (!gfc_matching_prefix); |
4427 | gfc_matching_prefix = true; | |
40de255b | 4428 | |
4e4ea00b | 4429 | do |
4ee9c684 | 4430 | { |
4e4ea00b | 4431 | found_prefix = false; |
4ee9c684 | 4432 | |
4e4ea00b | 4433 | if (!seen_type && ts != NULL |
4434 | && gfc_match_decl_type_spec (ts, 0) == MATCH_YES | |
4435 | && gfc_match_space () == MATCH_YES) | |
4436 | { | |
4ee9c684 | 4437 | |
4e4ea00b | 4438 | seen_type = true; |
4439 | found_prefix = true; | |
4440 | } | |
4441 | ||
4442 | if (gfc_match ("elemental% ") == MATCH_YES) | |
4443 | { | |
60e19868 | 4444 | if (!gfc_add_elemental (¤t_attr, NULL)) |
4e4ea00b | 4445 | goto error; |
4446 | ||
4447 | found_prefix = true; | |
4448 | } | |
4449 | ||
4450 | if (gfc_match ("pure% ") == MATCH_YES) | |
4451 | { | |
60e19868 | 4452 | if (!gfc_add_pure (¤t_attr, NULL)) |
4e4ea00b | 4453 | goto error; |
4454 | ||
4455 | found_prefix = true; | |
4456 | } | |
4ee9c684 | 4457 | |
4e4ea00b | 4458 | if (gfc_match ("recursive% ") == MATCH_YES) |
4459 | { | |
60e19868 | 4460 | if (!gfc_add_recursive (¤t_attr, NULL)) |
4e4ea00b | 4461 | goto error; |
4462 | ||
4463 | found_prefix = true; | |
4464 | } | |
4465 | ||
4466 | /* IMPURE is a somewhat special case, as it needs not set an actual | |
4467 | attribute but rather only prevents ELEMENTAL routines from being | |
4468 | automatically PURE. */ | |
4469 | if (gfc_match ("impure% ") == MATCH_YES) | |
4470 | { | |
60e19868 | 4471 | if (!gfc_notify_std (GFC_STD_F2008, "IMPURE procedure at %C")) |
4e4ea00b | 4472 | goto error; |
4473 | ||
4474 | seen_impure = true; | |
4475 | found_prefix = true; | |
4476 | } | |
4ee9c684 | 4477 | } |
4e4ea00b | 4478 | while (found_prefix); |
4ee9c684 | 4479 | |
4e4ea00b | 4480 | /* IMPURE and PURE must not both appear, of course. */ |
4481 | if (seen_impure && current_attr.pure) | |
4ee9c684 | 4482 | { |
4e4ea00b | 4483 | gfc_error ("PURE and IMPURE must not appear both at %C"); |
4484 | goto error; | |
4ee9c684 | 4485 | } |
4486 | ||
4e4ea00b | 4487 | /* If IMPURE it not seen but the procedure is ELEMENTAL, mark it as PURE. */ |
4488 | if (!seen_impure && current_attr.elemental && !current_attr.pure) | |
4ee9c684 | 4489 | { |
60e19868 | 4490 | if (!gfc_add_pure (¤t_attr, NULL)) |
40de255b | 4491 | goto error; |
4ee9c684 | 4492 | } |
4493 | ||
4494 | /* At this point, the next item is not a prefix. */ | |
d1645c7b | 4495 | gcc_assert (gfc_matching_prefix); |
4496 | gfc_matching_prefix = false; | |
4ee9c684 | 4497 | return MATCH_YES; |
40de255b | 4498 | |
4499 | error: | |
d1645c7b | 4500 | gcc_assert (gfc_matching_prefix); |
4501 | gfc_matching_prefix = false; | |
40de255b | 4502 | return MATCH_ERROR; |
4ee9c684 | 4503 | } |
4504 | ||
4505 | ||
077932f9 | 4506 | /* Copy attributes matched by gfc_match_prefix() to attributes on a symbol. */ |
4ee9c684 | 4507 | |
60e19868 | 4508 | static bool |
1a9745d2 | 4509 | copy_prefix (symbol_attribute *dest, locus *where) |
4ee9c684 | 4510 | { |
60e19868 | 4511 | if (current_attr.pure && !gfc_add_pure (dest, where)) |
4512 | return false; | |
4ee9c684 | 4513 | |
60e19868 | 4514 | if (current_attr.elemental && !gfc_add_elemental (dest, where)) |
4515 | return false; | |
4ee9c684 | 4516 | |
60e19868 | 4517 | if (current_attr.recursive && !gfc_add_recursive (dest, where)) |
4518 | return false; | |
4ee9c684 | 4519 | |
60e19868 | 4520 | return true; |
4ee9c684 | 4521 | } |
4522 | ||
4523 | ||
4524 | /* Match a formal argument list. */ | |
4525 | ||
4526 | match | |
1a9745d2 | 4527 | gfc_match_formal_arglist (gfc_symbol *progname, int st_flag, int null_flag) |
4ee9c684 | 4528 | { |
4529 | gfc_formal_arglist *head, *tail, *p, *q; | |
4530 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4531 | gfc_symbol *sym; | |
4532 | match m; | |
4533 | ||
4534 | head = tail = NULL; | |
4535 | ||
4536 | if (gfc_match_char ('(') != MATCH_YES) | |
4537 | { | |
4538 | if (null_flag) | |
4539 | goto ok; | |
4540 | return MATCH_NO; | |
4541 | } | |
4542 | ||
4543 | if (gfc_match_char (')') == MATCH_YES) | |
4544 | goto ok; | |
4545 | ||
4546 | for (;;) | |
4547 | { | |
4548 | if (gfc_match_char ('*') == MATCH_YES) | |
a5d831e5 | 4549 | { |
4550 | sym = NULL; | |
60e19868 | 4551 | if (!gfc_notify_std (GFC_STD_F95_OBS, "Alternate-return argument " |
4552 | "at %C")) | |
a5d831e5 | 4553 | { |
4554 | m = MATCH_ERROR; | |
4555 | goto cleanup; | |
4556 | } | |
4557 | } | |
4ee9c684 | 4558 | else |
4559 | { | |
4560 | m = gfc_match_name (name); | |
4561 | if (m != MATCH_YES) | |
4562 | goto cleanup; | |
4563 | ||
4564 | if (gfc_get_symbol (name, NULL, &sym)) | |
4565 | goto cleanup; | |
4566 | } | |
4567 | ||
4568 | p = gfc_get_formal_arglist (); | |
4569 | ||
4570 | if (head == NULL) | |
4571 | head = tail = p; | |
4572 | else | |
4573 | { | |
4574 | tail->next = p; | |
4575 | tail = p; | |
4576 | } | |
4577 | ||
4578 | tail->sym = sym; | |
4579 | ||
4580 | /* We don't add the VARIABLE flavor because the name could be a | |
1a9745d2 | 4581 | dummy procedure. We don't apply these attributes to formal |
4582 | arguments of statement functions. */ | |
4ee9c684 | 4583 | if (sym != NULL && !st_flag |
60e19868 | 4584 | && (!gfc_add_dummy(&sym->attr, sym->name, NULL) |
4585 | || !gfc_missing_attr (&sym->attr, NULL))) | |
4ee9c684 | 4586 | { |
4587 | m = MATCH_ERROR; | |
4588 | goto cleanup; | |
4589 | } | |
4590 | ||
4591 | /* The name of a program unit can be in a different namespace, | |
1a9745d2 | 4592 | so check for it explicitly. After the statement is accepted, |
4593 | the name is checked for especially in gfc_get_symbol(). */ | |
4ee9c684 | 4594 | if (gfc_new_block != NULL && sym != NULL |
4595 | && strcmp (sym->name, gfc_new_block->name) == 0) | |
4596 | { | |
4597 | gfc_error ("Name '%s' at %C is the name of the procedure", | |
4598 | sym->name); | |
4599 | m = MATCH_ERROR; | |
4600 | goto cleanup; | |
4601 | } | |
4602 | ||
4603 | if (gfc_match_char (')') == MATCH_YES) | |
4604 | goto ok; | |
4605 | ||
4606 | m = gfc_match_char (','); | |
4607 | if (m != MATCH_YES) | |
4608 | { | |
4609 | gfc_error ("Unexpected junk in formal argument list at %C"); | |
4610 | goto cleanup; | |
4611 | } | |
4612 | } | |
4613 | ||
4614 | ok: | |
4615 | /* Check for duplicate symbols in the formal argument list. */ | |
4616 | if (head != NULL) | |
4617 | { | |
4618 | for (p = head; p->next; p = p->next) | |
4619 | { | |
4620 | if (p->sym == NULL) | |
4621 | continue; | |
4622 | ||
4623 | for (q = p->next; q; q = q->next) | |
4624 | if (p->sym == q->sym) | |
4625 | { | |
1a9745d2 | 4626 | gfc_error ("Duplicate symbol '%s' in formal argument list " |
4627 | "at %C", p->sym->name); | |
4ee9c684 | 4628 | |
4629 | m = MATCH_ERROR; | |
4630 | goto cleanup; | |
4631 | } | |
4632 | } | |
4633 | } | |
4634 | ||
60e19868 | 4635 | if (!gfc_add_explicit_interface (progname, IFSRC_DECL, head, NULL)) |
4ee9c684 | 4636 | { |
4637 | m = MATCH_ERROR; | |
4638 | goto cleanup; | |
4639 | } | |
4640 | ||
4641 | return MATCH_YES; | |
4642 | ||
4643 | cleanup: | |
4644 | gfc_free_formal_arglist (head); | |
4645 | return m; | |
4646 | } | |
4647 | ||
4648 | ||
4649 | /* Match a RESULT specification following a function declaration or | |
4650 | ENTRY statement. Also matches the end-of-statement. */ | |
4651 | ||
4652 | static match | |
f6d0e37a | 4653 | match_result (gfc_symbol *function, gfc_symbol **result) |
4ee9c684 | 4654 | { |
4655 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4656 | gfc_symbol *r; | |
4657 | match m; | |
4658 | ||
4659 | if (gfc_match (" result (") != MATCH_YES) | |
4660 | return MATCH_NO; | |
4661 | ||
4662 | m = gfc_match_name (name); | |
4663 | if (m != MATCH_YES) | |
4664 | return m; | |
4665 | ||
c5d33754 | 4666 | /* Get the right paren, and that's it because there could be the |
4667 | bind(c) attribute after the result clause. */ | |
60e19868 | 4668 | if (gfc_match_char (')') != MATCH_YES) |
4ee9c684 | 4669 | { |
c5d33754 | 4670 | /* TODO: should report the missing right paren here. */ |
4ee9c684 | 4671 | return MATCH_ERROR; |
4672 | } | |
4673 | ||
4674 | if (strcmp (function->name, name) == 0) | |
4675 | { | |
1a9745d2 | 4676 | gfc_error ("RESULT variable at %C must be different than function name"); |
4ee9c684 | 4677 | return MATCH_ERROR; |
4678 | } | |
4679 | ||
4680 | if (gfc_get_symbol (name, NULL, &r)) | |
4681 | return MATCH_ERROR; | |
4682 | ||
60e19868 | 4683 | if (!gfc_add_result (&r->attr, r->name, NULL)) |
4ee9c684 | 4684 | return MATCH_ERROR; |
4685 | ||
4686 | *result = r; | |
4687 | ||
4688 | return MATCH_YES; | |
4689 | } | |
4690 | ||
4691 | ||
c5d33754 | 4692 | /* Match a function suffix, which could be a combination of a result |
4693 | clause and BIND(C), either one, or neither. The draft does not | |
4694 | require them to come in a specific order. */ | |
4695 | ||
4696 | match | |
4697 | gfc_match_suffix (gfc_symbol *sym, gfc_symbol **result) | |
4698 | { | |
4699 | match is_bind_c; /* Found bind(c). */ | |
4700 | match is_result; /* Found result clause. */ | |
4701 | match found_match; /* Status of whether we've found a good match. */ | |
e0be6f02 | 4702 | char peek_char; /* Character we're going to peek at. */ |
75ae7f6c | 4703 | bool allow_binding_name; |
c5d33754 | 4704 | |
4705 | /* Initialize to having found nothing. */ | |
4706 | found_match = MATCH_NO; | |
8db94b3b | 4707 | is_bind_c = MATCH_NO; |
c5d33754 | 4708 | is_result = MATCH_NO; |
4709 | ||
4710 | /* Get the next char to narrow between result and bind(c). */ | |
4711 | gfc_gobble_whitespace (); | |
e0be6f02 | 4712 | peek_char = gfc_peek_ascii_char (); |
c5d33754 | 4713 | |
75ae7f6c | 4714 | /* C binding names are not allowed for internal procedures. */ |
4715 | if (gfc_current_state () == COMP_CONTAINS | |
4716 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
4717 | allow_binding_name = false; | |
4718 | else | |
4719 | allow_binding_name = true; | |
4720 | ||
c5d33754 | 4721 | switch (peek_char) |
4722 | { | |
4723 | case 'r': | |
4724 | /* Look for result clause. */ | |
4725 | is_result = match_result (sym, result); | |
4726 | if (is_result == MATCH_YES) | |
4727 | { | |
4728 | /* Now see if there is a bind(c) after it. */ | |
75ae7f6c | 4729 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
c5d33754 | 4730 | /* We've found the result clause and possibly bind(c). */ |
4731 | found_match = MATCH_YES; | |
4732 | } | |
4733 | else | |
4734 | /* This should only be MATCH_ERROR. */ | |
8db94b3b | 4735 | found_match = is_result; |
c5d33754 | 4736 | break; |
4737 | case 'b': | |
4738 | /* Look for bind(c) first. */ | |
75ae7f6c | 4739 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
c5d33754 | 4740 | if (is_bind_c == MATCH_YES) |
4741 | { | |
4742 | /* Now see if a result clause followed it. */ | |
4743 | is_result = match_result (sym, result); | |
4744 | found_match = MATCH_YES; | |
4745 | } | |
4746 | else | |
4747 | { | |
4748 | /* Should only be a MATCH_ERROR if we get here after seeing 'b'. */ | |
4749 | found_match = MATCH_ERROR; | |
4750 | } | |
4751 | break; | |
4752 | default: | |
4753 | gfc_error ("Unexpected junk after function declaration at %C"); | |
4754 | found_match = MATCH_ERROR; | |
4755 | break; | |
4756 | } | |
4757 | ||
c5d33754 | 4758 | if (is_bind_c == MATCH_YES) |
4518e961 | 4759 | { |
75ae7f6c | 4760 | /* Fortran 2008 draft allows BIND(C) for internal procedures. */ |
4518e961 | 4761 | if (gfc_current_state () == COMP_CONTAINS |
75ae7f6c | 4762 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
60e19868 | 4763 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
4764 | "at %L may not be specified for an internal " | |
4765 | "procedure", &gfc_current_locus)) | |
75ae7f6c | 4766 | return MATCH_ERROR; |
4767 | ||
60e19868 | 4768 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, &gfc_current_locus, 1)) |
4518e961 | 4769 | return MATCH_ERROR; |
4770 | } | |
8db94b3b | 4771 | |
c5d33754 | 4772 | return found_match; |
4773 | } | |
4774 | ||
4775 | ||
1e057e9b | 4776 | /* Procedure pointer return value without RESULT statement: |
4777 | Add "hidden" result variable named "ppr@". */ | |
4778 | ||
60e19868 | 4779 | static bool |
1e057e9b | 4780 | add_hidden_procptr_result (gfc_symbol *sym) |
4781 | { | |
4782 | bool case1,case2; | |
4783 | ||
4784 | if (gfc_notification_std (GFC_STD_F2003) == ERROR) | |
60e19868 | 4785 | return false; |
1e057e9b | 4786 | |
4787 | /* First usage case: PROCEDURE and EXTERNAL statements. */ | |
4788 | case1 = gfc_current_state () == COMP_FUNCTION && gfc_current_block () | |
4789 | && strcmp (gfc_current_block ()->name, sym->name) == 0 | |
4790 | && sym->attr.external; | |
4791 | /* Second usage case: INTERFACE statements. */ | |
4792 | case2 = gfc_current_state () == COMP_INTERFACE && gfc_state_stack->previous | |
4793 | && gfc_state_stack->previous->state == COMP_FUNCTION | |
4794 | && strcmp (gfc_state_stack->previous->sym->name, sym->name) == 0; | |
4795 | ||
4796 | if (case1 || case2) | |
4797 | { | |
4798 | gfc_symtree *stree; | |
4799 | if (case1) | |
36b0a1b0 | 4800 | gfc_get_sym_tree ("ppr@", gfc_current_ns, &stree, false); |
1e057e9b | 4801 | else if (case2) |
180a5dc0 | 4802 | { |
4803 | gfc_symtree *st2; | |
36b0a1b0 | 4804 | gfc_get_sym_tree ("ppr@", gfc_current_ns->parent, &stree, false); |
180a5dc0 | 4805 | st2 = gfc_new_symtree (&gfc_current_ns->sym_root, "ppr@"); |
4806 | st2->n.sym = stree->n.sym; | |
4807 | } | |
1e057e9b | 4808 | sym->result = stree->n.sym; |
4809 | ||
4810 | sym->result->attr.proc_pointer = sym->attr.proc_pointer; | |
4811 | sym->result->attr.pointer = sym->attr.pointer; | |
4812 | sym->result->attr.external = sym->attr.external; | |
4813 | sym->result->attr.referenced = sym->attr.referenced; | |
e40ac2fe | 4814 | sym->result->ts = sym->ts; |
1e057e9b | 4815 | sym->attr.proc_pointer = 0; |
4816 | sym->attr.pointer = 0; | |
4817 | sym->attr.external = 0; | |
4818 | if (sym->result->attr.external && sym->result->attr.pointer) | |
4819 | { | |
4820 | sym->result->attr.pointer = 0; | |
4821 | sym->result->attr.proc_pointer = 1; | |
4822 | } | |
4823 | ||
4824 | return gfc_add_result (&sym->result->attr, sym->result->name, NULL); | |
4825 | } | |
4826 | /* POINTER after PROCEDURE/EXTERNAL/INTERFACE statement. */ | |
4827 | else if (sym->attr.function && !sym->attr.external && sym->attr.pointer | |
4828 | && sym->result && sym->result != sym && sym->result->attr.external | |
4829 | && sym == gfc_current_ns->proc_name | |
4830 | && sym == sym->result->ns->proc_name | |
4831 | && strcmp ("ppr@", sym->result->name) == 0) | |
4832 | { | |
4833 | sym->result->attr.proc_pointer = 1; | |
4834 | sym->attr.pointer = 0; | |
60e19868 | 4835 | return true; |
1e057e9b | 4836 | } |
4837 | else | |
60e19868 | 4838 | return false; |
1e057e9b | 4839 | } |
4840 | ||
4841 | ||
64e93293 | 4842 | /* Match the interface for a PROCEDURE declaration, |
4843 | including brackets (R1212). */ | |
af1a34ee | 4844 | |
4845 | static match | |
64e93293 | 4846 | match_procedure_interface (gfc_symbol **proc_if) |
af1a34ee | 4847 | { |
4848 | match m; | |
1eb2b542 | 4849 | gfc_symtree *st; |
af1a34ee | 4850 | locus old_loc, entry_loc; |
1eb2b542 | 4851 | gfc_namespace *old_ns = gfc_current_ns; |
4852 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
af1a34ee | 4853 | |
1eb2b542 | 4854 | old_loc = entry_loc = gfc_current_locus; |
af1a34ee | 4855 | gfc_clear_ts (¤t_ts); |
4856 | ||
4857 | if (gfc_match (" (") != MATCH_YES) | |
4858 | { | |
4859 | gfc_current_locus = entry_loc; | |
4860 | return MATCH_NO; | |
4861 | } | |
4862 | ||
4863 | /* Get the type spec. for the procedure interface. */ | |
4864 | old_loc = gfc_current_locus; | |
e8152f13 | 4865 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
fd1277c3 | 4866 | gfc_gobble_whitespace (); |
e0be6f02 | 4867 | if (m == MATCH_YES || (m == MATCH_NO && gfc_peek_ascii_char () == ')')) |
af1a34ee | 4868 | goto got_ts; |
4869 | ||
4870 | if (m == MATCH_ERROR) | |
4871 | return m; | |
4872 | ||
1eb2b542 | 4873 | /* Procedure interface is itself a procedure. */ |
af1a34ee | 4874 | gfc_current_locus = old_loc; |
1eb2b542 | 4875 | m = gfc_match_name (name); |
af1a34ee | 4876 | |
1eb2b542 | 4877 | /* First look to see if it is already accessible in the current |
4878 | namespace because it is use associated or contained. */ | |
4879 | st = NULL; | |
4880 | if (gfc_find_sym_tree (name, NULL, 0, &st)) | |
4881 | return MATCH_ERROR; | |
4882 | ||
4883 | /* If it is still not found, then try the parent namespace, if it | |
4884 | exists and create the symbol there if it is still not found. */ | |
4885 | if (gfc_current_ns->parent) | |
4886 | gfc_current_ns = gfc_current_ns->parent; | |
4887 | if (st == NULL && gfc_get_ha_sym_tree (name, &st)) | |
4888 | return MATCH_ERROR; | |
4889 | ||
4890 | gfc_current_ns = old_ns; | |
4891 | *proc_if = st->n.sym; | |
af1a34ee | 4892 | |
64e93293 | 4893 | if (*proc_if) |
af1a34ee | 4894 | { |
64e93293 | 4895 | (*proc_if)->refs++; |
74113644 | 4896 | /* Resolve interface if possible. That way, attr.procedure is only set |
4897 | if it is declared by a later procedure-declaration-stmt, which is | |
87863b31 | 4898 | invalid per F08:C1216 (cf. resolve_procedure_interface). */ |
64e93293 | 4899 | while ((*proc_if)->ts.interface) |
4900 | *proc_if = (*proc_if)->ts.interface; | |
74113644 | 4901 | |
87863b31 | 4902 | if ((*proc_if)->attr.flavor == FL_UNKNOWN |
4903 | && (*proc_if)->ts.type == BT_UNKNOWN | |
60e19868 | 4904 | && !gfc_add_flavor (&(*proc_if)->attr, FL_PROCEDURE, |
4905 | (*proc_if)->name, NULL)) | |
87863b31 | 4906 | return MATCH_ERROR; |
af1a34ee | 4907 | } |
4908 | ||
4909 | got_ts: | |
af1a34ee | 4910 | if (gfc_match (" )") != MATCH_YES) |
4911 | { | |
4912 | gfc_current_locus = entry_loc; | |
4913 | return MATCH_NO; | |
4914 | } | |
4915 | ||
64e93293 | 4916 | return MATCH_YES; |
4917 | } | |
4918 | ||
4919 | ||
4920 | /* Match a PROCEDURE declaration (R1211). */ | |
4921 | ||
4922 | static match | |
4923 | match_procedure_decl (void) | |
4924 | { | |
4925 | match m; | |
4926 | gfc_symbol *sym, *proc_if = NULL; | |
4927 | int num; | |
4928 | gfc_expr *initializer = NULL; | |
4929 | ||
293d72e0 | 4930 | /* Parse interface (with brackets). */ |
64e93293 | 4931 | m = match_procedure_interface (&proc_if); |
4932 | if (m != MATCH_YES) | |
4933 | return m; | |
4934 | ||
4935 | /* Parse attributes (with colons). */ | |
af1a34ee | 4936 | m = match_attr_spec(); |
4937 | if (m == MATCH_ERROR) | |
4938 | return MATCH_ERROR; | |
4939 | ||
caa3ea40 | 4940 | if (proc_if && proc_if->attr.is_bind_c && !current_attr.is_bind_c) |
4941 | { | |
4942 | current_attr.is_bind_c = 1; | |
4943 | has_name_equals = 0; | |
4944 | curr_binding_label = NULL; | |
4945 | } | |
4946 | ||
af1a34ee | 4947 | /* Get procedure symbols. */ |
4948 | for(num=1;;num++) | |
4949 | { | |
af1a34ee | 4950 | m = gfc_match_symbol (&sym, 0); |
4951 | if (m == MATCH_NO) | |
4952 | goto syntax; | |
4953 | else if (m == MATCH_ERROR) | |
4954 | return m; | |
4955 | ||
4956 | /* Add current_attr to the symbol attributes. */ | |
60e19868 | 4957 | if (!gfc_copy_attr (&sym->attr, ¤t_attr, NULL)) |
af1a34ee | 4958 | return MATCH_ERROR; |
4959 | ||
4960 | if (sym->attr.is_bind_c) | |
4961 | { | |
4962 | /* Check for C1218. */ | |
4963 | if (!proc_if || !proc_if->attr.is_bind_c) | |
4964 | { | |
4965 | gfc_error ("BIND(C) attribute at %C requires " | |
4966 | "an interface with BIND(C)"); | |
4967 | return MATCH_ERROR; | |
4968 | } | |
4969 | /* Check for C1217. */ | |
4970 | if (has_name_equals && sym->attr.pointer) | |
4971 | { | |
4972 | gfc_error ("BIND(C) procedure with NAME may not have " | |
4973 | "POINTER attribute at %C"); | |
4974 | return MATCH_ERROR; | |
4975 | } | |
4976 | if (has_name_equals && sym->attr.dummy) | |
4977 | { | |
4978 | gfc_error ("Dummy procedure at %C may not have " | |
4979 | "BIND(C) attribute with NAME"); | |
4980 | return MATCH_ERROR; | |
4981 | } | |
4982 | /* Set binding label for BIND(C). */ | |
60e19868 | 4983 | if (!set_binding_label (&sym->binding_label, sym->name, num)) |
af1a34ee | 4984 | return MATCH_ERROR; |
4985 | } | |
4986 | ||
60e19868 | 4987 | if (!gfc_add_external (&sym->attr, NULL)) |
af1a34ee | 4988 | return MATCH_ERROR; |
1e057e9b | 4989 | |
60e19868 | 4990 | if (add_hidden_procptr_result (sym)) |
1e057e9b | 4991 | sym = sym->result; |
4992 | ||
60e19868 | 4993 | if (!gfc_add_proc (&sym->attr, sym->name, NULL)) |
af1a34ee | 4994 | return MATCH_ERROR; |
4995 | ||
4996 | /* Set interface. */ | |
4997 | if (proc_if != NULL) | |
f7d7a083 | 4998 | { |
13a834aa | 4999 | if (sym->ts.type != BT_UNKNOWN) |
5000 | { | |
5001 | gfc_error ("Procedure '%s' at %L already has basic type of %s", | |
5002 | sym->name, &gfc_current_locus, | |
5003 | gfc_basic_typename (sym->ts.type)); | |
5004 | return MATCH_ERROR; | |
5005 | } | |
2cd2bb5c | 5006 | sym->ts.interface = proc_if; |
f7d7a083 | 5007 | sym->attr.untyped = 1; |
180a5dc0 | 5008 | sym->attr.if_source = IFSRC_IFBODY; |
f7d7a083 | 5009 | } |
af1a34ee | 5010 | else if (current_ts.type != BT_UNKNOWN) |
5011 | { | |
60e19868 | 5012 | if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
13a834aa | 5013 | return MATCH_ERROR; |
2cd2bb5c | 5014 | sym->ts.interface = gfc_new_symbol ("", gfc_current_ns); |
5015 | sym->ts.interface->ts = current_ts; | |
ce80bc5b | 5016 | sym->ts.interface->attr.flavor = FL_PROCEDURE; |
2cd2bb5c | 5017 | sym->ts.interface->attr.function = 1; |
ce80bc5b | 5018 | sym->attr.function = 1; |
180a5dc0 | 5019 | sym->attr.if_source = IFSRC_UNKNOWN; |
af1a34ee | 5020 | } |
5021 | ||
cad0ddcf | 5022 | if (gfc_match (" =>") == MATCH_YES) |
5023 | { | |
5024 | if (!current_attr.pointer) | |
5025 | { | |
5026 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
5027 | m = MATCH_ERROR; | |
5028 | goto cleanup; | |
5029 | } | |
5030 | ||
23d075f4 | 5031 | m = match_pointer_init (&initializer, 1); |
cad0ddcf | 5032 | if (m != MATCH_YES) |
5033 | goto cleanup; | |
5034 | ||
60e19868 | 5035 | if (!add_init_expr_to_sym (sym->name, &initializer, &gfc_current_locus)) |
cad0ddcf | 5036 | goto cleanup; |
5037 | ||
5038 | } | |
5039 | ||
af1a34ee | 5040 | if (gfc_match_eos () == MATCH_YES) |
5041 | return MATCH_YES; | |
5042 | if (gfc_match_char (',') != MATCH_YES) | |
5043 | goto syntax; | |
5044 | } | |
5045 | ||
5046 | syntax: | |
5047 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
5048 | return MATCH_ERROR; | |
cad0ddcf | 5049 | |
5050 | cleanup: | |
5051 | /* Free stuff up and return. */ | |
5052 | gfc_free_expr (initializer); | |
5053 | return m; | |
af1a34ee | 5054 | } |
5055 | ||
5056 | ||
64e93293 | 5057 | static match |
5058 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc); | |
5059 | ||
5060 | ||
5061 | /* Match a procedure pointer component declaration (R445). */ | |
5062 | ||
5063 | static match | |
5064 | match_ppc_decl (void) | |
5065 | { | |
5066 | match m; | |
5067 | gfc_symbol *proc_if = NULL; | |
5068 | gfc_typespec ts; | |
5069 | int num; | |
5070 | gfc_component *c; | |
5071 | gfc_expr *initializer = NULL; | |
5072 | gfc_typebound_proc* tb; | |
5073 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5074 | ||
5075 | /* Parse interface (with brackets). */ | |
5076 | m = match_procedure_interface (&proc_if); | |
5077 | if (m != MATCH_YES) | |
5078 | goto syntax; | |
5079 | ||
5080 | /* Parse attributes. */ | |
5081 | tb = XCNEW (gfc_typebound_proc); | |
5082 | tb->where = gfc_current_locus; | |
5083 | m = match_binding_attributes (tb, false, true); | |
5084 | if (m == MATCH_ERROR) | |
5085 | return m; | |
5086 | ||
64e93293 | 5087 | gfc_clear_attr (¤t_attr); |
5088 | current_attr.procedure = 1; | |
5089 | current_attr.proc_pointer = 1; | |
5090 | current_attr.access = tb->access; | |
5091 | current_attr.flavor = FL_PROCEDURE; | |
5092 | ||
5093 | /* Match the colons (required). */ | |
5094 | if (gfc_match (" ::") != MATCH_YES) | |
5095 | { | |
5096 | gfc_error ("Expected '::' after binding-attributes at %C"); | |
5097 | return MATCH_ERROR; | |
5098 | } | |
5099 | ||
5100 | /* Check for C450. */ | |
5101 | if (!tb->nopass && proc_if == NULL) | |
5102 | { | |
5103 | gfc_error("NOPASS or explicit interface required at %C"); | |
5104 | return MATCH_ERROR; | |
5105 | } | |
5106 | ||
60e19868 | 5107 | if (!gfc_notify_std (GFC_STD_F2003, "Procedure pointer component at %C")) |
8a026279 | 5108 | return MATCH_ERROR; |
5109 | ||
64e93293 | 5110 | /* Match PPC names. */ |
5111 | ts = current_ts; | |
5112 | for(num=1;;num++) | |
5113 | { | |
5114 | m = gfc_match_name (name); | |
5115 | if (m == MATCH_NO) | |
5116 | goto syntax; | |
5117 | else if (m == MATCH_ERROR) | |
5118 | return m; | |
5119 | ||
60e19868 | 5120 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
64e93293 | 5121 | return MATCH_ERROR; |
5122 | ||
5123 | /* Add current_attr to the symbol attributes. */ | |
60e19868 | 5124 | if (!gfc_copy_attr (&c->attr, ¤t_attr, NULL)) |
64e93293 | 5125 | return MATCH_ERROR; |
5126 | ||
60e19868 | 5127 | if (!gfc_add_external (&c->attr, NULL)) |
64e93293 | 5128 | return MATCH_ERROR; |
5129 | ||
60e19868 | 5130 | if (!gfc_add_proc (&c->attr, name, NULL)) |
64e93293 | 5131 | return MATCH_ERROR; |
5132 | ||
99014f81 | 5133 | if (num == 1) |
5134 | c->tb = tb; | |
5135 | else | |
5136 | { | |
5137 | c->tb = XCNEW (gfc_typebound_proc); | |
5138 | c->tb->where = gfc_current_locus; | |
5139 | *c->tb = *tb; | |
5140 | } | |
fe9b08a2 | 5141 | |
64e93293 | 5142 | /* Set interface. */ |
5143 | if (proc_if != NULL) | |
5144 | { | |
5145 | c->ts.interface = proc_if; | |
5146 | c->attr.untyped = 1; | |
5147 | c->attr.if_source = IFSRC_IFBODY; | |
5148 | } | |
5149 | else if (ts.type != BT_UNKNOWN) | |
5150 | { | |
5151 | c->ts = ts; | |
5152 | c->ts.interface = gfc_new_symbol ("", gfc_current_ns); | |
a63bcd97 | 5153 | c->ts.interface->result = c->ts.interface; |
64e93293 | 5154 | c->ts.interface->ts = ts; |
ce80bc5b | 5155 | c->ts.interface->attr.flavor = FL_PROCEDURE; |
64e93293 | 5156 | c->ts.interface->attr.function = 1; |
ce80bc5b | 5157 | c->attr.function = 1; |
64e93293 | 5158 | c->attr.if_source = IFSRC_UNKNOWN; |
5159 | } | |
5160 | ||
5161 | if (gfc_match (" =>") == MATCH_YES) | |
5162 | { | |
23d075f4 | 5163 | m = match_pointer_init (&initializer, 1); |
64e93293 | 5164 | if (m != MATCH_YES) |
5165 | { | |
5166 | gfc_free_expr (initializer); | |
5167 | return m; | |
5168 | } | |
5169 | c->initializer = initializer; | |
5170 | } | |
5171 | ||
5172 | if (gfc_match_eos () == MATCH_YES) | |
5173 | return MATCH_YES; | |
5174 | if (gfc_match_char (',') != MATCH_YES) | |
5175 | goto syntax; | |
5176 | } | |
5177 | ||
5178 | syntax: | |
5179 | gfc_error ("Syntax error in procedure pointer component at %C"); | |
5180 | return MATCH_ERROR; | |
5181 | } | |
5182 | ||
5183 | ||
af1a34ee | 5184 | /* Match a PROCEDURE declaration inside an interface (R1206). */ |
5185 | ||
5186 | static match | |
5187 | match_procedure_in_interface (void) | |
5188 | { | |
5189 | match m; | |
5190 | gfc_symbol *sym; | |
5191 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
2b0f5dc8 | 5192 | locus old_locus; |
af1a34ee | 5193 | |
5194 | if (current_interface.type == INTERFACE_NAMELESS | |
5195 | || current_interface.type == INTERFACE_ABSTRACT) | |
5196 | { | |
5197 | gfc_error ("PROCEDURE at %C must be in a generic interface"); | |
5198 | return MATCH_ERROR; | |
5199 | } | |
5200 | ||
2b0f5dc8 | 5201 | /* Check if the F2008 optional double colon appears. */ |
5202 | gfc_gobble_whitespace (); | |
5203 | old_locus = gfc_current_locus; | |
5204 | if (gfc_match ("::") == MATCH_YES) | |
5205 | { | |
60e19868 | 5206 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
5207 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
2b0f5dc8 | 5208 | return MATCH_ERROR; |
5209 | } | |
5210 | else | |
5211 | gfc_current_locus = old_locus; | |
5212 | ||
af1a34ee | 5213 | for(;;) |
5214 | { | |
5215 | m = gfc_match_name (name); | |
5216 | if (m == MATCH_NO) | |
5217 | goto syntax; | |
5218 | else if (m == MATCH_ERROR) | |
5219 | return m; | |
5220 | if (gfc_get_symbol (name, gfc_current_ns->parent, &sym)) | |
5221 | return MATCH_ERROR; | |
5222 | ||
60e19868 | 5223 | if (!gfc_add_interface (sym)) |
af1a34ee | 5224 | return MATCH_ERROR; |
5225 | ||
af1a34ee | 5226 | if (gfc_match_eos () == MATCH_YES) |
5227 | break; | |
5228 | if (gfc_match_char (',') != MATCH_YES) | |
5229 | goto syntax; | |
5230 | } | |
5231 | ||
5232 | return MATCH_YES; | |
5233 | ||
5234 | syntax: | |
5235 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
5236 | return MATCH_ERROR; | |
5237 | } | |
5238 | ||
5239 | ||
5240 | /* General matcher for PROCEDURE declarations. */ | |
5241 | ||
7fd88f6e | 5242 | static match match_procedure_in_type (void); |
5243 | ||
af1a34ee | 5244 | match |
5245 | gfc_match_procedure (void) | |
5246 | { | |
5247 | match m; | |
5248 | ||
5249 | switch (gfc_current_state ()) | |
5250 | { | |
5251 | case COMP_NONE: | |
5252 | case COMP_PROGRAM: | |
5253 | case COMP_MODULE: | |
5254 | case COMP_SUBROUTINE: | |
5255 | case COMP_FUNCTION: | |
0b342e60 | 5256 | case COMP_BLOCK: |
af1a34ee | 5257 | m = match_procedure_decl (); |
5258 | break; | |
5259 | case COMP_INTERFACE: | |
5260 | m = match_procedure_in_interface (); | |
5261 | break; | |
5262 | case COMP_DERIVED: | |
64e93293 | 5263 | m = match_ppc_decl (); |
5264 | break; | |
7fd88f6e | 5265 | case COMP_DERIVED_CONTAINS: |
5266 | m = match_procedure_in_type (); | |
5267 | break; | |
af1a34ee | 5268 | default: |
5269 | return MATCH_NO; | |
5270 | } | |
5271 | ||
5272 | if (m != MATCH_YES) | |
5273 | return m; | |
5274 | ||
60e19868 | 5275 | if (!gfc_notify_std (GFC_STD_F2003, "PROCEDURE statement at %C")) |
af1a34ee | 5276 | return MATCH_ERROR; |
5277 | ||
5278 | return m; | |
5279 | } | |
5280 | ||
5281 | ||
a34926ba | 5282 | /* Warn if a matched procedure has the same name as an intrinsic; this is |
5283 | simply a wrapper around gfc_warn_intrinsic_shadow that interprets the current | |
5284 | parser-state-stack to find out whether we're in a module. */ | |
5285 | ||
5286 | static void | |
8290d53f | 5287 | do_warn_intrinsic_shadow (const gfc_symbol* sym, bool func) |
a34926ba | 5288 | { |
5289 | bool in_module; | |
5290 | ||
5291 | in_module = (gfc_state_stack->previous | |
5292 | && gfc_state_stack->previous->state == COMP_MODULE); | |
5293 | ||
5294 | gfc_warn_intrinsic_shadow (sym, in_module, func); | |
5295 | } | |
5296 | ||
5297 | ||
4ee9c684 | 5298 | /* Match a function declaration. */ |
5299 | ||
5300 | match | |
5301 | gfc_match_function_decl (void) | |
5302 | { | |
5303 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5304 | gfc_symbol *sym, *result; | |
5305 | locus old_loc; | |
5306 | match m; | |
c5d33754 | 5307 | match suffix_match; |
8db94b3b | 5308 | match found_match; /* Status returned by match func. */ |
4ee9c684 | 5309 | |
5310 | if (gfc_current_state () != COMP_NONE | |
5311 | && gfc_current_state () != COMP_INTERFACE | |
5312 | && gfc_current_state () != COMP_CONTAINS) | |
5313 | return MATCH_NO; | |
5314 | ||
5315 | gfc_clear_ts (¤t_ts); | |
5316 | ||
cbb9e6aa | 5317 | old_loc = gfc_current_locus; |
4ee9c684 | 5318 | |
077932f9 | 5319 | m = gfc_match_prefix (¤t_ts); |
4ee9c684 | 5320 | if (m != MATCH_YES) |
5321 | { | |
cbb9e6aa | 5322 | gfc_current_locus = old_loc; |
4ee9c684 | 5323 | return m; |
5324 | } | |
5325 | ||
5326 | if (gfc_match ("function% %n", name) != MATCH_YES) | |
5327 | { | |
cbb9e6aa | 5328 | gfc_current_locus = old_loc; |
4ee9c684 | 5329 | return MATCH_NO; |
5330 | } | |
d77f260f | 5331 | if (get_proc_name (name, &sym, false)) |
4ee9c684 | 5332 | return MATCH_ERROR; |
1e057e9b | 5333 | |
60e19868 | 5334 | if (add_hidden_procptr_result (sym)) |
1e057e9b | 5335 | sym = sym->result; |
5336 | ||
4ee9c684 | 5337 | gfc_new_block = sym; |
5338 | ||
5339 | m = gfc_match_formal_arglist (sym, 0, 0); | |
5340 | if (m == MATCH_NO) | |
9b435b6d | 5341 | { |
5342 | gfc_error ("Expected formal argument list in function " | |
1a9745d2 | 5343 | "definition at %C"); |
9b435b6d | 5344 | m = MATCH_ERROR; |
5345 | goto cleanup; | |
5346 | } | |
4ee9c684 | 5347 | else if (m == MATCH_ERROR) |
5348 | goto cleanup; | |
5349 | ||
5350 | result = NULL; | |
5351 | ||
c5d33754 | 5352 | /* According to the draft, the bind(c) and result clause can |
5353 | come in either order after the formal_arg_list (i.e., either | |
5354 | can be first, both can exist together or by themselves or neither | |
5355 | one). Therefore, the match_result can't match the end of the | |
5356 | string, and check for the bind(c) or result clause in either order. */ | |
5357 | found_match = gfc_match_eos (); | |
5358 | ||
5359 | /* Make sure that it isn't already declared as BIND(C). If it is, it | |
5360 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5361 | not allowed for procedures. */ | |
5362 | if (sym->attr.is_bind_c == 1) | |
5363 | { | |
5364 | sym->attr.is_bind_c = 0; | |
5365 | if (sym->old_symbol != NULL) | |
5366 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5367 | "variables or common blocks", | |
5368 | &(sym->old_symbol->declared_at)); | |
5369 | else | |
5370 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5371 | "variables or common blocks", &gfc_current_locus); | |
4ee9c684 | 5372 | } |
5373 | ||
c5d33754 | 5374 | if (found_match != MATCH_YES) |
4ee9c684 | 5375 | { |
c5d33754 | 5376 | /* If we haven't found the end-of-statement, look for a suffix. */ |
5377 | suffix_match = gfc_match_suffix (sym, &result); | |
5378 | if (suffix_match == MATCH_YES) | |
5379 | /* Need to get the eos now. */ | |
5380 | found_match = gfc_match_eos (); | |
5381 | else | |
5382 | found_match = suffix_match; | |
4ee9c684 | 5383 | } |
5384 | ||
c5d33754 | 5385 | if(found_match != MATCH_YES) |
5386 | m = MATCH_ERROR; | |
4ee9c684 | 5387 | else |
5388 | { | |
c5d33754 | 5389 | /* Make changes to the symbol. */ |
5390 | m = MATCH_ERROR; | |
8db94b3b | 5391 | |
60e19868 | 5392 | if (!gfc_add_function (&sym->attr, sym->name, NULL)) |
c5d33754 | 5393 | goto cleanup; |
8db94b3b | 5394 | |
60e19868 | 5395 | if (!gfc_missing_attr (&sym->attr, NULL) |
5396 | || !copy_prefix (&sym->attr, &sym->declared_at)) | |
c5d33754 | 5397 | goto cleanup; |
4ee9c684 | 5398 | |
8d39570e | 5399 | /* Delay matching the function characteristics until after the |
077932f9 | 5400 | specification block by signalling kind=-1. */ |
8d39570e | 5401 | sym->declared_at = old_loc; |
5402 | if (current_ts.type != BT_UNKNOWN) | |
5403 | current_ts.kind = -1; | |
5404 | else | |
5405 | current_ts.kind = 0; | |
077932f9 | 5406 | |
c5d33754 | 5407 | if (result == NULL) |
5408 | { | |
0477d42d | 5409 | if (current_ts.type != BT_UNKNOWN |
60e19868 | 5410 | && !gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
0477d42d | 5411 | goto cleanup; |
c5d33754 | 5412 | sym->result = sym; |
5413 | } | |
5414 | else | |
5415 | { | |
0477d42d | 5416 | if (current_ts.type != BT_UNKNOWN |
60e19868 | 5417 | && !gfc_add_type (result, ¤t_ts, &gfc_current_locus)) |
0477d42d | 5418 | goto cleanup; |
c5d33754 | 5419 | sym->result = result; |
5420 | } | |
5421 | ||
a34926ba | 5422 | /* Warn if this procedure has the same name as an intrinsic. */ |
8290d53f | 5423 | do_warn_intrinsic_shadow (sym, true); |
a34926ba | 5424 | |
c5d33754 | 5425 | return MATCH_YES; |
5426 | } | |
4ee9c684 | 5427 | |
5428 | cleanup: | |
cbb9e6aa | 5429 | gfc_current_locus = old_loc; |
4ee9c684 | 5430 | return m; |
5431 | } | |
5432 | ||
1a9745d2 | 5433 | |
5434 | /* This is mostly a copy of parse.c(add_global_procedure) but modified to | |
5435 | pass the name of the entry, rather than the gfc_current_block name, and | |
5436 | to return false upon finding an existing global entry. */ | |
858f9894 | 5437 | |
5438 | static bool | |
8d779aef | 5439 | add_global_entry (const char *name, const char *binding_label, bool sub, |
5440 | locus *where) | |
858f9894 | 5441 | { |
5442 | gfc_gsymbol *s; | |
8458f4ca | 5443 | enum gfc_symbol_type type; |
858f9894 | 5444 | |
5b11d932 | 5445 | type = sub ? GSYM_SUBROUTINE : GSYM_FUNCTION; |
858f9894 | 5446 | |
da5c730d | 5447 | /* Only in Fortran 2003: For procedures with a binding label also the Fortran |
5448 | name is a global identifier. */ | |
5449 | if (!binding_label || gfc_notification_std (GFC_STD_F2008)) | |
858f9894 | 5450 | { |
da5c730d | 5451 | s = gfc_get_gsymbol (name); |
5452 | ||
5453 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
5454 | { | |
8d779aef | 5455 | gfc_global_used (s, where); |
da5c730d | 5456 | return false; |
5457 | } | |
5458 | else | |
5459 | { | |
5460 | s->type = type; | |
c8b913ab | 5461 | s->sym_name = name; |
8d779aef | 5462 | s->where = *where; |
da5c730d | 5463 | s->defined = 1; |
5464 | s->ns = gfc_current_ns; | |
5465 | } | |
858f9894 | 5466 | } |
da5c730d | 5467 | |
5468 | /* Don't add the symbol multiple times. */ | |
5469 | if (binding_label | |
5470 | && (!gfc_notification_std (GFC_STD_F2008) | |
5471 | || strcmp (name, binding_label) != 0)) | |
5472 | { | |
5473 | s = gfc_get_gsymbol (binding_label); | |
5474 | ||
5475 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
5476 | { | |
8d779aef | 5477 | gfc_global_used (s, where); |
da5c730d | 5478 | return false; |
5479 | } | |
5480 | else | |
5481 | { | |
5482 | s->type = type; | |
c8b913ab | 5483 | s->sym_name = name; |
da5c730d | 5484 | s->binding_label = binding_label; |
8d779aef | 5485 | s->where = *where; |
da5c730d | 5486 | s->defined = 1; |
5487 | s->ns = gfc_current_ns; | |
5488 | } | |
5489 | } | |
5490 | ||
5491 | return true; | |
858f9894 | 5492 | } |
4ee9c684 | 5493 | |
1a9745d2 | 5494 | |
4ee9c684 | 5495 | /* Match an ENTRY statement. */ |
5496 | ||
5497 | match | |
5498 | gfc_match_entry (void) | |
5499 | { | |
1b716045 | 5500 | gfc_symbol *proc; |
5501 | gfc_symbol *result; | |
5502 | gfc_symbol *entry; | |
4ee9c684 | 5503 | char name[GFC_MAX_SYMBOL_LEN + 1]; |
5504 | gfc_compile_state state; | |
5505 | match m; | |
1b716045 | 5506 | gfc_entry_list *el; |
7b5e1acc | 5507 | locus old_loc; |
d77f260f | 5508 | bool module_procedure; |
86f0974b | 5509 | char peek_char; |
5510 | match is_bind_c; | |
4ee9c684 | 5511 | |
5512 | m = gfc_match_name (name); | |
5513 | if (m != MATCH_YES) | |
5514 | return m; | |
5515 | ||
60e19868 | 5516 | if (!gfc_notify_std (GFC_STD_F2008_OBS, "ENTRY statement at %C")) |
a3b81b0f | 5517 | return MATCH_ERROR; |
5518 | ||
1b716045 | 5519 | state = gfc_current_state (); |
ea37f786 | 5520 | if (state != COMP_SUBROUTINE && state != COMP_FUNCTION) |
1b716045 | 5521 | { |
ea37f786 | 5522 | switch (state) |
5523 | { | |
5524 | case COMP_PROGRAM: | |
5525 | gfc_error ("ENTRY statement at %C cannot appear within a PROGRAM"); | |
5526 | break; | |
5527 | case COMP_MODULE: | |
5528 | gfc_error ("ENTRY statement at %C cannot appear within a MODULE"); | |
5529 | break; | |
5530 | case COMP_BLOCK_DATA: | |
1a9745d2 | 5531 | gfc_error ("ENTRY statement at %C cannot appear within " |
5532 | "a BLOCK DATA"); | |
ea37f786 | 5533 | break; |
5534 | case COMP_INTERFACE: | |
1a9745d2 | 5535 | gfc_error ("ENTRY statement at %C cannot appear within " |
5536 | "an INTERFACE"); | |
ea37f786 | 5537 | break; |
5538 | case COMP_DERIVED: | |
1a9745d2 | 5539 | gfc_error ("ENTRY statement at %C cannot appear within " |
5540 | "a DERIVED TYPE block"); | |
ea37f786 | 5541 | break; |
5542 | case COMP_IF: | |
1a9745d2 | 5543 | gfc_error ("ENTRY statement at %C cannot appear within " |
5544 | "an IF-THEN block"); | |
ea37f786 | 5545 | break; |
5546 | case COMP_DO: | |
55ea8666 | 5547 | case COMP_DO_CONCURRENT: |
1a9745d2 | 5548 | gfc_error ("ENTRY statement at %C cannot appear within " |
5549 | "a DO block"); | |
ea37f786 | 5550 | break; |
5551 | case COMP_SELECT: | |
1a9745d2 | 5552 | gfc_error ("ENTRY statement at %C cannot appear within " |
5553 | "a SELECT block"); | |
ea37f786 | 5554 | break; |
5555 | case COMP_FORALL: | |
1a9745d2 | 5556 | gfc_error ("ENTRY statement at %C cannot appear within " |
5557 | "a FORALL block"); | |
ea37f786 | 5558 | break; |
5559 | case COMP_WHERE: | |
1a9745d2 | 5560 | gfc_error ("ENTRY statement at %C cannot appear within " |
5561 | "a WHERE block"); | |
ea37f786 | 5562 | break; |
5563 | case COMP_CONTAINS: | |
1a9745d2 | 5564 | gfc_error ("ENTRY statement at %C cannot appear within " |
5565 | "a contained subprogram"); | |
ea37f786 | 5566 | break; |
5567 | default: | |
5568 | gfc_internal_error ("gfc_match_entry(): Bad state"); | |
5569 | } | |
1b716045 | 5570 | return MATCH_ERROR; |
5571 | } | |
5572 | ||
d77f260f | 5573 | module_procedure = gfc_current_ns->parent != NULL |
1a9745d2 | 5574 | && gfc_current_ns->parent->proc_name |
5575 | && gfc_current_ns->parent->proc_name->attr.flavor | |
5576 | == FL_MODULE; | |
d77f260f | 5577 | |
1b716045 | 5578 | if (gfc_current_ns->parent != NULL |
5579 | && gfc_current_ns->parent->proc_name | |
d77f260f | 5580 | && !module_procedure) |
1b716045 | 5581 | { |
5582 | gfc_error("ENTRY statement at %C cannot appear in a " | |
5583 | "contained procedure"); | |
5584 | return MATCH_ERROR; | |
5585 | } | |
5586 | ||
d77f260f | 5587 | /* Module function entries need special care in get_proc_name |
5588 | because previous references within the function will have | |
5589 | created symbols attached to the current namespace. */ | |
5590 | if (get_proc_name (name, &entry, | |
5591 | gfc_current_ns->parent != NULL | |
c1e4695a | 5592 | && module_procedure)) |
4ee9c684 | 5593 | return MATCH_ERROR; |
5594 | ||
1b716045 | 5595 | proc = gfc_current_block (); |
5596 | ||
86f0974b | 5597 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
5598 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5599 | not allowed for procedures. */ | |
5600 | if (entry->attr.is_bind_c == 1) | |
5601 | { | |
5602 | entry->attr.is_bind_c = 0; | |
5603 | if (entry->old_symbol != NULL) | |
5604 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5605 | "variables or common blocks", | |
5606 | &(entry->old_symbol->declared_at)); | |
5607 | else | |
5608 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5609 | "variables or common blocks", &gfc_current_locus); | |
5610 | } | |
8db94b3b | 5611 | |
86f0974b | 5612 | /* Check what next non-whitespace character is so we can tell if there |
5613 | is the required parens if we have a BIND(C). */ | |
8d779aef | 5614 | old_loc = gfc_current_locus; |
86f0974b | 5615 | gfc_gobble_whitespace (); |
e0be6f02 | 5616 | peek_char = gfc_peek_ascii_char (); |
86f0974b | 5617 | |
1b716045 | 5618 | if (state == COMP_SUBROUTINE) |
4ee9c684 | 5619 | { |
4ee9c684 | 5620 | m = gfc_match_formal_arglist (entry, 0, 1); |
5621 | if (m != MATCH_YES) | |
5622 | return MATCH_ERROR; | |
5623 | ||
75ae7f6c | 5624 | /* Call gfc_match_bind_c with allow_binding_name = true as ENTRY can |
5625 | never be an internal procedure. */ | |
5626 | is_bind_c = gfc_match_bind_c (entry, true); | |
86f0974b | 5627 | if (is_bind_c == MATCH_ERROR) |
5628 | return MATCH_ERROR; | |
5629 | if (is_bind_c == MATCH_YES) | |
5630 | { | |
5631 | if (peek_char != '(') | |
5632 | { | |
5633 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
5634 | return MATCH_ERROR; | |
5635 | } | |
60e19868 | 5636 | if (!gfc_add_is_bind_c (&(entry->attr), entry->name, |
5637 | &(entry->declared_at), 1)) | |
86f0974b | 5638 | return MATCH_ERROR; |
5639 | } | |
5640 | ||
da5c730d | 5641 | if (!gfc_current_ns->parent |
8d779aef | 5642 | && !add_global_entry (name, entry->binding_label, true, |
5643 | &old_loc)) | |
da5c730d | 5644 | return MATCH_ERROR; |
5645 | ||
5646 | /* An entry in a subroutine. */ | |
60e19868 | 5647 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
5648 | || !gfc_add_subroutine (&entry->attr, entry->name, NULL)) | |
4ee9c684 | 5649 | return MATCH_ERROR; |
1b716045 | 5650 | } |
5651 | else | |
5652 | { | |
7b5e1acc | 5653 | /* An entry in a function. |
1a9745d2 | 5654 | We need to take special care because writing |
5655 | ENTRY f() | |
5656 | as | |
5657 | ENTRY f | |
5658 | is allowed, whereas | |
5659 | ENTRY f() RESULT (r) | |
5660 | can't be written as | |
5661 | ENTRY f RESULT (r). */ | |
7b5e1acc | 5662 | if (gfc_match_eos () == MATCH_YES) |
5663 | { | |
5664 | gfc_current_locus = old_loc; | |
5665 | /* Match the empty argument list, and add the interface to | |
5666 | the symbol. */ | |
5667 | m = gfc_match_formal_arglist (entry, 0, 1); | |
5668 | } | |
5669 | else | |
5670 | m = gfc_match_formal_arglist (entry, 0, 0); | |
5671 | ||
4ee9c684 | 5672 | if (m != MATCH_YES) |
5673 | return MATCH_ERROR; | |
5674 | ||
4ee9c684 | 5675 | result = NULL; |
5676 | ||
5677 | if (gfc_match_eos () == MATCH_YES) | |
5678 | { | |
60e19868 | 5679 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
5680 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
4ee9c684 | 5681 | return MATCH_ERROR; |
5682 | ||
c6871095 | 5683 | entry->result = entry; |
4ee9c684 | 5684 | } |
5685 | else | |
5686 | { | |
86f0974b | 5687 | m = gfc_match_suffix (entry, &result); |
4ee9c684 | 5688 | if (m == MATCH_NO) |
5689 | gfc_syntax_error (ST_ENTRY); | |
5690 | if (m != MATCH_YES) | |
5691 | return MATCH_ERROR; | |
5692 | ||
86f0974b | 5693 | if (result) |
5694 | { | |
60e19868 | 5695 | if (!gfc_add_result (&result->attr, result->name, NULL) |
5696 | || !gfc_add_entry (&entry->attr, result->name, NULL) | |
5697 | || !gfc_add_function (&entry->attr, result->name, NULL)) | |
86f0974b | 5698 | return MATCH_ERROR; |
5699 | entry->result = result; | |
5700 | } | |
5701 | else | |
5702 | { | |
60e19868 | 5703 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
5704 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
86f0974b | 5705 | return MATCH_ERROR; |
5706 | entry->result = entry; | |
5707 | } | |
4ee9c684 | 5708 | } |
da5c730d | 5709 | |
5710 | if (!gfc_current_ns->parent | |
8d779aef | 5711 | && !add_global_entry (name, entry->binding_label, false, |
5712 | &old_loc)) | |
da5c730d | 5713 | return MATCH_ERROR; |
4ee9c684 | 5714 | } |
5715 | ||
5716 | if (gfc_match_eos () != MATCH_YES) | |
5717 | { | |
5718 | gfc_syntax_error (ST_ENTRY); | |
5719 | return MATCH_ERROR; | |
5720 | } | |
5721 | ||
1b716045 | 5722 | entry->attr.recursive = proc->attr.recursive; |
5723 | entry->attr.elemental = proc->attr.elemental; | |
5724 | entry->attr.pure = proc->attr.pure; | |
4ee9c684 | 5725 | |
1b716045 | 5726 | el = gfc_get_entry_list (); |
5727 | el->sym = entry; | |
5728 | el->next = gfc_current_ns->entries; | |
5729 | gfc_current_ns->entries = el; | |
5730 | if (el->next) | |
5731 | el->id = el->next->id + 1; | |
5732 | else | |
5733 | el->id = 1; | |
4ee9c684 | 5734 | |
1b716045 | 5735 | new_st.op = EXEC_ENTRY; |
5736 | new_st.ext.entry = el; | |
5737 | ||
5738 | return MATCH_YES; | |
4ee9c684 | 5739 | } |
5740 | ||
5741 | ||
5742 | /* Match a subroutine statement, including optional prefixes. */ | |
5743 | ||
5744 | match | |
5745 | gfc_match_subroutine (void) | |
5746 | { | |
5747 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5748 | gfc_symbol *sym; | |
5749 | match m; | |
c5d33754 | 5750 | match is_bind_c; |
5751 | char peek_char; | |
75ae7f6c | 5752 | bool allow_binding_name; |
4ee9c684 | 5753 | |
5754 | if (gfc_current_state () != COMP_NONE | |
5755 | && gfc_current_state () != COMP_INTERFACE | |
5756 | && gfc_current_state () != COMP_CONTAINS) | |
5757 | return MATCH_NO; | |
5758 | ||
077932f9 | 5759 | m = gfc_match_prefix (NULL); |
4ee9c684 | 5760 | if (m != MATCH_YES) |
5761 | return m; | |
5762 | ||
5763 | m = gfc_match ("subroutine% %n", name); | |
5764 | if (m != MATCH_YES) | |
5765 | return m; | |
5766 | ||
d77f260f | 5767 | if (get_proc_name (name, &sym, false)) |
4ee9c684 | 5768 | return MATCH_ERROR; |
1e057e9b | 5769 | |
22c1d301 | 5770 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if |
293d72e0 | 5771 | the symbol existed before. */ |
22c1d301 | 5772 | sym->declared_at = gfc_current_locus; |
5773 | ||
60e19868 | 5774 | if (add_hidden_procptr_result (sym)) |
1e057e9b | 5775 | sym = sym->result; |
5776 | ||
4ee9c684 | 5777 | gfc_new_block = sym; |
5778 | ||
c5d33754 | 5779 | /* Check what next non-whitespace character is so we can tell if there |
86f0974b | 5780 | is the required parens if we have a BIND(C). */ |
c5d33754 | 5781 | gfc_gobble_whitespace (); |
e0be6f02 | 5782 | peek_char = gfc_peek_ascii_char (); |
8db94b3b | 5783 | |
60e19868 | 5784 | if (!gfc_add_subroutine (&sym->attr, sym->name, NULL)) |
4ee9c684 | 5785 | return MATCH_ERROR; |
5786 | ||
5787 | if (gfc_match_formal_arglist (sym, 0, 1) != MATCH_YES) | |
5788 | return MATCH_ERROR; | |
5789 | ||
c5d33754 | 5790 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
5791 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5792 | not allowed for procedures. */ | |
5793 | if (sym->attr.is_bind_c == 1) | |
5794 | { | |
5795 | sym->attr.is_bind_c = 0; | |
5796 | if (sym->old_symbol != NULL) | |
5797 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5798 | "variables or common blocks", | |
5799 | &(sym->old_symbol->declared_at)); | |
5800 | else | |
5801 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5802 | "variables or common blocks", &gfc_current_locus); | |
5803 | } | |
75ae7f6c | 5804 | |
5805 | /* C binding names are not allowed for internal procedures. */ | |
5806 | if (gfc_current_state () == COMP_CONTAINS | |
5807 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
5808 | allow_binding_name = false; | |
5809 | else | |
5810 | allow_binding_name = true; | |
5811 | ||
c5d33754 | 5812 | /* Here, we are just checking if it has the bind(c) attribute, and if |
5813 | so, then we need to make sure it's all correct. If it doesn't, | |
5814 | we still need to continue matching the rest of the subroutine line. */ | |
75ae7f6c | 5815 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
c5d33754 | 5816 | if (is_bind_c == MATCH_ERROR) |
5817 | { | |
5818 | /* There was an attempt at the bind(c), but it was wrong. An | |
5819 | error message should have been printed w/in the gfc_match_bind_c | |
5820 | so here we'll just return the MATCH_ERROR. */ | |
5821 | return MATCH_ERROR; | |
5822 | } | |
5823 | ||
5824 | if (is_bind_c == MATCH_YES) | |
5825 | { | |
75ae7f6c | 5826 | /* The following is allowed in the Fortran 2008 draft. */ |
4518e961 | 5827 | if (gfc_current_state () == COMP_CONTAINS |
75ae7f6c | 5828 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
60e19868 | 5829 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
5830 | "at %L may not be specified for an internal " | |
5831 | "procedure", &gfc_current_locus)) | |
75ae7f6c | 5832 | return MATCH_ERROR; |
5833 | ||
c5d33754 | 5834 | if (peek_char != '(') |
5835 | { | |
5836 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
5837 | return MATCH_ERROR; | |
5838 | } | |
60e19868 | 5839 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, |
5840 | &(sym->declared_at), 1)) | |
c5d33754 | 5841 | return MATCH_ERROR; |
5842 | } | |
8db94b3b | 5843 | |
4ee9c684 | 5844 | if (gfc_match_eos () != MATCH_YES) |
5845 | { | |
5846 | gfc_syntax_error (ST_SUBROUTINE); | |
5847 | return MATCH_ERROR; | |
5848 | } | |
5849 | ||
60e19868 | 5850 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
4ee9c684 | 5851 | return MATCH_ERROR; |
5852 | ||
a34926ba | 5853 | /* Warn if it has the same name as an intrinsic. */ |
8290d53f | 5854 | do_warn_intrinsic_shadow (sym, false); |
a34926ba | 5855 | |
4ee9c684 | 5856 | return MATCH_YES; |
5857 | } | |
5858 | ||
5859 | ||
7136063b | 5860 | /* Check that the NAME identifier in a BIND attribute or statement |
5861 | is conform to C identifier rules. */ | |
5862 | ||
5863 | match | |
5864 | check_bind_name_identifier (char **name) | |
5865 | { | |
5866 | char *n = *name, *p; | |
5867 | ||
5868 | /* Remove leading spaces. */ | |
5869 | while (*n == ' ') | |
5870 | n++; | |
5871 | ||
5872 | /* On an empty string, free memory and set name to NULL. */ | |
5873 | if (*n == '\0') | |
5874 | { | |
5875 | free (*name); | |
5876 | *name = NULL; | |
5877 | return MATCH_YES; | |
5878 | } | |
5879 | ||
5880 | /* Remove trailing spaces. */ | |
5881 | p = n + strlen(n) - 1; | |
5882 | while (*p == ' ') | |
5883 | *(p--) = '\0'; | |
5884 | ||
5885 | /* Insert the identifier into the symbol table. */ | |
5886 | p = xstrdup (n); | |
5887 | free (*name); | |
5888 | *name = p; | |
5889 | ||
5890 | /* Now check that identifier is valid under C rules. */ | |
5891 | if (ISDIGIT (*p)) | |
5892 | { | |
5893 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
5894 | return MATCH_ERROR; | |
5895 | } | |
5896 | ||
5897 | for (; *p; p++) | |
5898 | if (!(ISALNUM (*p) || *p == '_' || *p == '$')) | |
5899 | { | |
5900 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
5901 | return MATCH_ERROR; | |
5902 | } | |
5903 | ||
5904 | return MATCH_YES; | |
5905 | } | |
5906 | ||
5907 | ||
c5d33754 | 5908 | /* Match a BIND(C) specifier, with the optional 'name=' specifier if |
5909 | given, and set the binding label in either the given symbol (if not | |
a0527218 | 5910 | NULL), or in the current_ts. The symbol may be NULL because we may |
c5d33754 | 5911 | encounter the BIND(C) before the declaration itself. Return |
5912 | MATCH_NO if what we're looking at isn't a BIND(C) specifier, | |
5913 | MATCH_ERROR if it is a BIND(C) clause but an error was encountered, | |
5914 | or MATCH_YES if the specifier was correct and the binding label and | |
5915 | bind(c) fields were set correctly for the given symbol or the | |
75ae7f6c | 5916 | current_ts. If allow_binding_name is false, no binding name may be |
5917 | given. */ | |
c5d33754 | 5918 | |
5919 | match | |
75ae7f6c | 5920 | gfc_match_bind_c (gfc_symbol *sym, bool allow_binding_name) |
c5d33754 | 5921 | { |
7136063b | 5922 | char *binding_label = NULL; |
5923 | gfc_expr *e = NULL; | |
c5d33754 | 5924 | |
8db94b3b | 5925 | /* Initialize the flag that specifies whether we encountered a NAME= |
c5d33754 | 5926 | specifier or not. */ |
5927 | has_name_equals = 0; | |
5928 | ||
c5d33754 | 5929 | /* This much we have to be able to match, in this order, if |
5930 | there is a bind(c) label. */ | |
5931 | if (gfc_match (" bind ( c ") != MATCH_YES) | |
5932 | return MATCH_NO; | |
5933 | ||
5934 | /* Now see if there is a binding label, or if we've reached the | |
5935 | end of the bind(c) attribute without one. */ | |
5936 | if (gfc_match_char (',') == MATCH_YES) | |
5937 | { | |
5938 | if (gfc_match (" name = ") != MATCH_YES) | |
5939 | { | |
5940 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
5941 | "at %C"); | |
5942 | /* should give an error message here */ | |
5943 | return MATCH_ERROR; | |
5944 | } | |
5945 | ||
5946 | has_name_equals = 1; | |
5947 | ||
7136063b | 5948 | if (gfc_match_init_expr (&e) != MATCH_YES) |
5949 | { | |
5950 | gfc_free_expr (e); | |
5951 | return MATCH_ERROR; | |
5952 | } | |
8db94b3b | 5953 | |
7136063b | 5954 | if (!gfc_simplify_expr(e, 0)) |
c5d33754 | 5955 | { |
7136063b | 5956 | gfc_error ("NAME= specifier at %C should be a constant expression"); |
5957 | gfc_free_expr (e); | |
5958 | return MATCH_ERROR; | |
c5d33754 | 5959 | } |
7136063b | 5960 | |
5961 | if (e->expr_type != EXPR_CONSTANT || e->ts.type != BT_CHARACTER | |
5962 | || e->ts.kind != gfc_default_character_kind || e->rank != 0) | |
c5d33754 | 5963 | { |
7136063b | 5964 | gfc_error ("NAME= specifier at %C should be a scalar of " |
5965 | "default character kind"); | |
5966 | gfc_free_expr(e); | |
5967 | return MATCH_ERROR; | |
c5d33754 | 5968 | } |
7136063b | 5969 | |
5970 | // Get a C string from the Fortran string constant | |
5971 | binding_label = gfc_widechar_to_char (e->value.character.string, | |
5972 | e->value.character.length); | |
5973 | gfc_free_expr(e); | |
5974 | ||
5975 | // Check that it is valid (old gfc_match_name_C) | |
5976 | if (check_bind_name_identifier (&binding_label) != MATCH_YES) | |
5977 | return MATCH_ERROR; | |
5978 | } | |
c5d33754 | 5979 | |
5980 | /* Get the required right paren. */ | |
5981 | if (gfc_match_char (')') != MATCH_YES) | |
5982 | { | |
5983 | gfc_error ("Missing closing paren for binding label at %C"); | |
5984 | return MATCH_ERROR; | |
5985 | } | |
5986 | ||
75ae7f6c | 5987 | if (has_name_equals && !allow_binding_name) |
5988 | { | |
5989 | gfc_error ("No binding name is allowed in BIND(C) at %C"); | |
5990 | return MATCH_ERROR; | |
5991 | } | |
5992 | ||
5993 | if (has_name_equals && sym != NULL && sym->attr.dummy) | |
5994 | { | |
5995 | gfc_error ("For dummy procedure %s, no binding name is " | |
5996 | "allowed in BIND(C) at %C", sym->name); | |
5997 | return MATCH_ERROR; | |
5998 | } | |
5999 | ||
6000 | ||
c5d33754 | 6001 | /* Save the binding label to the symbol. If sym is null, we're |
6002 | probably matching the typespec attributes of a declaration and | |
6003 | haven't gotten the name yet, and therefore, no symbol yet. */ | |
7b2060ba | 6004 | if (binding_label) |
c5d33754 | 6005 | { |
6006 | if (sym != NULL) | |
7b2060ba | 6007 | sym->binding_label = binding_label; |
c5d33754 | 6008 | else |
7b2060ba | 6009 | curr_binding_label = binding_label; |
c5d33754 | 6010 | } |
75ae7f6c | 6011 | else if (allow_binding_name) |
c5d33754 | 6012 | { |
6013 | /* No binding label, but if symbol isn't null, we | |
75ae7f6c | 6014 | can set the label for it here. |
6015 | If name="" or allow_binding_name is false, no C binding name is | |
293d72e0 | 6016 | created. */ |
c5d33754 | 6017 | if (sym != NULL && sym->name != NULL && has_name_equals == 0) |
7b2060ba | 6018 | sym->binding_label = IDENTIFIER_POINTER (get_identifier (sym->name)); |
c5d33754 | 6019 | } |
94fa7146 | 6020 | |
5cf92482 | 6021 | if (has_name_equals && gfc_current_state () == COMP_INTERFACE |
6022 | && current_interface.type == INTERFACE_ABSTRACT) | |
94fa7146 | 6023 | { |
6024 | gfc_error ("NAME not allowed on BIND(C) for ABSTRACT INTERFACE at %C"); | |
6025 | return MATCH_ERROR; | |
6026 | } | |
6027 | ||
c5d33754 | 6028 | return MATCH_YES; |
6029 | } | |
6030 | ||
6031 | ||
231e961a | 6032 | /* Return nonzero if we're currently compiling a contained procedure. */ |
c0985832 | 6033 | |
6034 | static int | |
6035 | contained_procedure (void) | |
6036 | { | |
1c343287 | 6037 | gfc_state_data *s = gfc_state_stack; |
c0985832 | 6038 | |
1c343287 | 6039 | if ((s->state == COMP_SUBROUTINE || s->state == COMP_FUNCTION) |
6040 | && s->previous != NULL && s->previous->state == COMP_CONTAINS) | |
6041 | return 1; | |
c0985832 | 6042 | |
6043 | return 0; | |
6044 | } | |
6045 | ||
e14bee04 | 6046 | /* Set the kind of each enumerator. The kind is selected such that it is |
3b6a4b41 | 6047 | interoperable with the corresponding C enumeration type, making |
6048 | sure that -fshort-enums is honored. */ | |
6049 | ||
6050 | static void | |
6051 | set_enum_kind(void) | |
6052 | { | |
6053 | enumerator_history *current_history = NULL; | |
6054 | int kind; | |
6055 | int i; | |
6056 | ||
6057 | if (max_enum == NULL || enum_history == NULL) | |
6058 | return; | |
6059 | ||
6f092e31 | 6060 | if (!flag_short_enums) |
e14bee04 | 6061 | return; |
6062 | ||
3b6a4b41 | 6063 | i = 0; |
6064 | do | |
6065 | { | |
6066 | kind = gfc_integer_kinds[i++].kind; | |
6067 | } | |
e14bee04 | 6068 | while (kind < gfc_c_int_kind |
3b6a4b41 | 6069 | && gfc_check_integer_range (max_enum->initializer->value.integer, |
6070 | kind) != ARITH_OK); | |
6071 | ||
6072 | current_history = enum_history; | |
6073 | while (current_history != NULL) | |
6074 | { | |
6075 | current_history->sym->ts.kind = kind; | |
6076 | current_history = current_history->next; | |
6077 | } | |
6078 | } | |
6079 | ||
1a9745d2 | 6080 | |
4ee9c684 | 6081 | /* Match any of the various end-block statements. Returns the type of |
6a7084d7 | 6082 | END to the caller. The END INTERFACE, END IF, END DO, END SELECT |
6083 | and END BLOCK statements cannot be replaced by a single END statement. */ | |
4ee9c684 | 6084 | |
6085 | match | |
1a9745d2 | 6086 | gfc_match_end (gfc_statement *st) |
4ee9c684 | 6087 | { |
6088 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6089 | gfc_compile_state state; | |
6090 | locus old_loc; | |
6091 | const char *block_name; | |
6092 | const char *target; | |
c0985832 | 6093 | int eos_ok; |
4ee9c684 | 6094 | match m; |
9e5e87d9 | 6095 | gfc_namespace *parent_ns, *ns, *prev_ns; |
6096 | gfc_namespace **nsp; | |
4ee9c684 | 6097 | |
cbb9e6aa | 6098 | old_loc = gfc_current_locus; |
4ee9c684 | 6099 | if (gfc_match ("end") != MATCH_YES) |
6100 | return MATCH_NO; | |
6101 | ||
6102 | state = gfc_current_state (); | |
1a9745d2 | 6103 | block_name = gfc_current_block () == NULL |
6104 | ? NULL : gfc_current_block ()->name; | |
4ee9c684 | 6105 | |
d18a512a | 6106 | switch (state) |
4ee9c684 | 6107 | { |
d18a512a | 6108 | case COMP_ASSOCIATE: |
6109 | case COMP_BLOCK: | |
5ebb0bc6 | 6110 | if (!strncmp (block_name, "block@", strlen("block@"))) |
d18a512a | 6111 | block_name = NULL; |
6112 | break; | |
6113 | ||
6114 | case COMP_CONTAINS: | |
6115 | case COMP_DERIVED_CONTAINS: | |
4ee9c684 | 6116 | state = gfc_state_stack->previous->state; |
1a9745d2 | 6117 | block_name = gfc_state_stack->previous->sym == NULL |
6118 | ? NULL : gfc_state_stack->previous->sym->name; | |
d18a512a | 6119 | break; |
6120 | ||
6121 | default: | |
6122 | break; | |
4ee9c684 | 6123 | } |
6124 | ||
6125 | switch (state) | |
6126 | { | |
6127 | case COMP_NONE: | |
6128 | case COMP_PROGRAM: | |
6129 | *st = ST_END_PROGRAM; | |
6130 | target = " program"; | |
c0985832 | 6131 | eos_ok = 1; |
4ee9c684 | 6132 | break; |
6133 | ||
6134 | case COMP_SUBROUTINE: | |
6135 | *st = ST_END_SUBROUTINE; | |
6136 | target = " subroutine"; | |
c0985832 | 6137 | eos_ok = !contained_procedure (); |
4ee9c684 | 6138 | break; |
6139 | ||
6140 | case COMP_FUNCTION: | |
6141 | *st = ST_END_FUNCTION; | |
6142 | target = " function"; | |
c0985832 | 6143 | eos_ok = !contained_procedure (); |
4ee9c684 | 6144 | break; |
6145 | ||
6146 | case COMP_BLOCK_DATA: | |
6147 | *st = ST_END_BLOCK_DATA; | |
6148 | target = " block data"; | |
c0985832 | 6149 | eos_ok = 1; |
4ee9c684 | 6150 | break; |
6151 | ||
6152 | case COMP_MODULE: | |
6153 | *st = ST_END_MODULE; | |
6154 | target = " module"; | |
c0985832 | 6155 | eos_ok = 1; |
4ee9c684 | 6156 | break; |
6157 | ||
6158 | case COMP_INTERFACE: | |
6159 | *st = ST_END_INTERFACE; | |
6160 | target = " interface"; | |
c0985832 | 6161 | eos_ok = 0; |
4ee9c684 | 6162 | break; |
6163 | ||
6164 | case COMP_DERIVED: | |
7fd88f6e | 6165 | case COMP_DERIVED_CONTAINS: |
4ee9c684 | 6166 | *st = ST_END_TYPE; |
6167 | target = " type"; | |
c0985832 | 6168 | eos_ok = 0; |
4ee9c684 | 6169 | break; |
6170 | ||
d18a512a | 6171 | case COMP_ASSOCIATE: |
6172 | *st = ST_END_ASSOCIATE; | |
6173 | target = " associate"; | |
6174 | eos_ok = 0; | |
6175 | break; | |
6176 | ||
6a7084d7 | 6177 | case COMP_BLOCK: |
6178 | *st = ST_END_BLOCK; | |
6179 | target = " block"; | |
6180 | eos_ok = 0; | |
6181 | break; | |
6182 | ||
4ee9c684 | 6183 | case COMP_IF: |
6184 | *st = ST_ENDIF; | |
6185 | target = " if"; | |
c0985832 | 6186 | eos_ok = 0; |
4ee9c684 | 6187 | break; |
6188 | ||
6189 | case COMP_DO: | |
55ea8666 | 6190 | case COMP_DO_CONCURRENT: |
4ee9c684 | 6191 | *st = ST_ENDDO; |
6192 | target = " do"; | |
c0985832 | 6193 | eos_ok = 0; |
4ee9c684 | 6194 | break; |
6195 | ||
c6cd3066 | 6196 | case COMP_CRITICAL: |
6197 | *st = ST_END_CRITICAL; | |
6198 | target = " critical"; | |
6199 | eos_ok = 0; | |
6200 | break; | |
6201 | ||
4ee9c684 | 6202 | case COMP_SELECT: |
1de1b1a9 | 6203 | case COMP_SELECT_TYPE: |
4ee9c684 | 6204 | *st = ST_END_SELECT; |
6205 | target = " select"; | |
c0985832 | 6206 | eos_ok = 0; |
4ee9c684 | 6207 | break; |
6208 | ||
6209 | case COMP_FORALL: | |
6210 | *st = ST_END_FORALL; | |
6211 | target = " forall"; | |
c0985832 | 6212 | eos_ok = 0; |
4ee9c684 | 6213 | break; |
6214 | ||
6215 | case COMP_WHERE: | |
6216 | *st = ST_END_WHERE; | |
6217 | target = " where"; | |
c0985832 | 6218 | eos_ok = 0; |
4ee9c684 | 6219 | break; |
6220 | ||
3b6a4b41 | 6221 | case COMP_ENUM: |
6222 | *st = ST_END_ENUM; | |
6223 | target = " enum"; | |
6224 | eos_ok = 0; | |
6225 | last_initializer = NULL; | |
6226 | set_enum_kind (); | |
6227 | gfc_free_enum_history (); | |
6228 | break; | |
6229 | ||
4ee9c684 | 6230 | default: |
6231 | gfc_error ("Unexpected END statement at %C"); | |
6232 | goto cleanup; | |
6233 | } | |
6234 | ||
8d779aef | 6235 | old_loc = gfc_current_locus; |
4ee9c684 | 6236 | if (gfc_match_eos () == MATCH_YES) |
6237 | { | |
4b20e9cf | 6238 | if (!eos_ok && (*st == ST_END_SUBROUTINE || *st == ST_END_FUNCTION)) |
6239 | { | |
60e19868 | 6240 | if (!gfc_notify_std (GFC_STD_F2008, "END statement " |
6241 | "instead of %s statement at %L", | |
6242 | gfc_ascii_statement(*st), &old_loc)) | |
4b20e9cf | 6243 | goto cleanup; |
6244 | } | |
6245 | else if (!eos_ok) | |
4ee9c684 | 6246 | { |
f6d0e37a | 6247 | /* We would have required END [something]. */ |
d197c9ee | 6248 | gfc_error ("%s statement expected at %L", |
6249 | gfc_ascii_statement (*st), &old_loc); | |
4ee9c684 | 6250 | goto cleanup; |
6251 | } | |
6252 | ||
6253 | return MATCH_YES; | |
6254 | } | |
6255 | ||
6256 | /* Verify that we've got the sort of end-block that we're expecting. */ | |
6257 | if (gfc_match (target) != MATCH_YES) | |
6258 | { | |
8d779aef | 6259 | gfc_error ("Expecting %s statement at %L", gfc_ascii_statement (*st), |
6260 | &old_loc); | |
4ee9c684 | 6261 | goto cleanup; |
6262 | } | |
6263 | ||
8d779aef | 6264 | old_loc = gfc_current_locus; |
4ee9c684 | 6265 | /* If we're at the end, make sure a block name wasn't required. */ |
6266 | if (gfc_match_eos () == MATCH_YES) | |
6267 | { | |
6268 | ||
0d0ce415 | 6269 | if (*st != ST_ENDDO && *st != ST_ENDIF && *st != ST_END_SELECT |
c6cd3066 | 6270 | && *st != ST_END_FORALL && *st != ST_END_WHERE && *st != ST_END_BLOCK |
d18a512a | 6271 | && *st != ST_END_ASSOCIATE && *st != ST_END_CRITICAL) |
4ee9c684 | 6272 | return MATCH_YES; |
6273 | ||
6a7084d7 | 6274 | if (!block_name) |
4ee9c684 | 6275 | return MATCH_YES; |
6276 | ||
8d779aef | 6277 | gfc_error ("Expected block name of '%s' in %s statement at %L", |
6278 | block_name, gfc_ascii_statement (*st), &old_loc); | |
4ee9c684 | 6279 | |
6280 | return MATCH_ERROR; | |
6281 | } | |
6282 | ||
6283 | /* END INTERFACE has a special handler for its several possible endings. */ | |
6284 | if (*st == ST_END_INTERFACE) | |
6285 | return gfc_match_end_interface (); | |
6286 | ||
f6d0e37a | 6287 | /* We haven't hit the end of statement, so what is left must be an |
6288 | end-name. */ | |
4ee9c684 | 6289 | m = gfc_match_space (); |
6290 | if (m == MATCH_YES) | |
6291 | m = gfc_match_name (name); | |
6292 | ||
6293 | if (m == MATCH_NO) | |
6294 | gfc_error ("Expected terminating name at %C"); | |
6295 | if (m != MATCH_YES) | |
6296 | goto cleanup; | |
6297 | ||
6298 | if (block_name == NULL) | |
6299 | goto syntax; | |
6300 | ||
1e057e9b | 6301 | if (strcmp (name, block_name) != 0 && strcmp (block_name, "ppr@") != 0) |
4ee9c684 | 6302 | { |
6303 | gfc_error ("Expected label '%s' for %s statement at %C", block_name, | |
6304 | gfc_ascii_statement (*st)); | |
6305 | goto cleanup; | |
6306 | } | |
1e057e9b | 6307 | /* Procedure pointer as function result. */ |
6308 | else if (strcmp (block_name, "ppr@") == 0 | |
6309 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) != 0) | |
6310 | { | |
6311 | gfc_error ("Expected label '%s' for %s statement at %C", | |
6312 | gfc_current_block ()->ns->proc_name->name, | |
6313 | gfc_ascii_statement (*st)); | |
6314 | goto cleanup; | |
6315 | } | |
4ee9c684 | 6316 | |
6317 | if (gfc_match_eos () == MATCH_YES) | |
6318 | return MATCH_YES; | |
6319 | ||
6320 | syntax: | |
6321 | gfc_syntax_error (*st); | |
6322 | ||
6323 | cleanup: | |
cbb9e6aa | 6324 | gfc_current_locus = old_loc; |
9e5e87d9 | 6325 | |
6326 | /* If we are missing an END BLOCK, we created a half-ready namespace. | |
6327 | Remove it from the parent namespace's sibling list. */ | |
6328 | ||
6329 | if (state == COMP_BLOCK) | |
6330 | { | |
6331 | parent_ns = gfc_current_ns->parent; | |
6332 | ||
6333 | nsp = &(gfc_state_stack->previous->tail->ext.block.ns); | |
6334 | ||
6335 | prev_ns = NULL; | |
6336 | ns = *nsp; | |
6337 | while (ns) | |
6338 | { | |
6339 | if (ns == gfc_current_ns) | |
6340 | { | |
6341 | if (prev_ns == NULL) | |
6342 | *nsp = NULL; | |
6343 | else | |
6344 | prev_ns->sibling = ns->sibling; | |
6345 | } | |
6346 | prev_ns = ns; | |
6347 | ns = ns->sibling; | |
6348 | } | |
6349 | ||
6350 | gfc_free_namespace (gfc_current_ns); | |
6351 | gfc_current_ns = parent_ns; | |
6352 | } | |
6353 | ||
4ee9c684 | 6354 | return MATCH_ERROR; |
6355 | } | |
6356 | ||
6357 | ||
6358 | ||
6359 | /***************** Attribute declaration statements ****************/ | |
6360 | ||
6361 | /* Set the attribute of a single variable. */ | |
6362 | ||
6363 | static match | |
6364 | attr_decl1 (void) | |
6365 | { | |
6366 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6367 | gfc_array_spec *as; | |
6368 | gfc_symbol *sym; | |
6369 | locus var_locus; | |
6370 | match m; | |
6371 | ||
6372 | as = NULL; | |
6373 | ||
6374 | m = gfc_match_name (name); | |
6375 | if (m != MATCH_YES) | |
6376 | goto cleanup; | |
6377 | ||
36b0a1b0 | 6378 | if (find_special (name, &sym, false)) |
4ee9c684 | 6379 | return MATCH_ERROR; |
6380 | ||
60e19868 | 6381 | if (!check_function_name (name)) |
f3e89339 | 6382 | { |
6383 | m = MATCH_ERROR; | |
6384 | goto cleanup; | |
6385 | } | |
8db94b3b | 6386 | |
cbb9e6aa | 6387 | var_locus = gfc_current_locus; |
4ee9c684 | 6388 | |
6389 | /* Deal with possible array specification for certain attributes. */ | |
6390 | if (current_attr.dimension | |
aff518b0 | 6391 | || current_attr.codimension |
4ee9c684 | 6392 | || current_attr.allocatable |
6393 | || current_attr.pointer | |
6394 | || current_attr.target) | |
6395 | { | |
aff518b0 | 6396 | m = gfc_match_array_spec (&as, !current_attr.codimension, |
6397 | !current_attr.dimension | |
6398 | && !current_attr.pointer | |
6399 | && !current_attr.target); | |
4ee9c684 | 6400 | if (m == MATCH_ERROR) |
6401 | goto cleanup; | |
6402 | ||
6403 | if (current_attr.dimension && m == MATCH_NO) | |
6404 | { | |
1a9745d2 | 6405 | gfc_error ("Missing array specification at %L in DIMENSION " |
6406 | "statement", &var_locus); | |
4ee9c684 | 6407 | m = MATCH_ERROR; |
6408 | goto cleanup; | |
6409 | } | |
6410 | ||
13aebeb0 | 6411 | if (current_attr.dimension && sym->value) |
6412 | { | |
6413 | gfc_error ("Dimensions specified for %s at %L after its " | |
6414 | "initialisation", sym->name, &var_locus); | |
6415 | m = MATCH_ERROR; | |
6416 | goto cleanup; | |
6417 | } | |
6418 | ||
aff518b0 | 6419 | if (current_attr.codimension && m == MATCH_NO) |
6420 | { | |
6421 | gfc_error ("Missing array specification at %L in CODIMENSION " | |
6422 | "statement", &var_locus); | |
6423 | m = MATCH_ERROR; | |
6424 | goto cleanup; | |
6425 | } | |
6426 | ||
4ee9c684 | 6427 | if ((current_attr.allocatable || current_attr.pointer) |
6428 | && (m == MATCH_YES) && (as->type != AS_DEFERRED)) | |
6429 | { | |
1a9745d2 | 6430 | gfc_error ("Array specification must be deferred at %L", &var_locus); |
4ee9c684 | 6431 | m = MATCH_ERROR; |
6432 | goto cleanup; | |
6433 | } | |
6434 | } | |
6435 | ||
b3704193 | 6436 | /* Update symbol table. DIMENSION attribute is set in |
6437 | gfc_set_array_spec(). For CLASS variables, this must be applied | |
607ae689 | 6438 | to the first component, or '_data' field. */ |
a33fbb6f | 6439 | if (sym->ts.type == BT_CLASS && sym->ts.u.derived->attr.is_class) |
4ee9c684 | 6440 | { |
60e19868 | 6441 | if (!gfc_copy_attr (&CLASS_DATA(sym)->attr, ¤t_attr, &var_locus)) |
b3704193 | 6442 | { |
6443 | m = MATCH_ERROR; | |
6444 | goto cleanup; | |
6445 | } | |
b3704193 | 6446 | } |
6447 | else | |
6448 | { | |
aff518b0 | 6449 | if (current_attr.dimension == 0 && current_attr.codimension == 0 |
60e19868 | 6450 | && !gfc_copy_attr (&sym->attr, ¤t_attr, &var_locus)) |
b3704193 | 6451 | { |
6452 | m = MATCH_ERROR; | |
6453 | goto cleanup; | |
6454 | } | |
4ee9c684 | 6455 | } |
8db94b3b | 6456 | |
fa102e56 | 6457 | if (sym->ts.type == BT_CLASS |
e8393d49 | 6458 | && !gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as)) |
29dae2bf | 6459 | { |
6460 | m = MATCH_ERROR; | |
6461 | goto cleanup; | |
6462 | } | |
4ee9c684 | 6463 | |
60e19868 | 6464 | if (!gfc_set_array_spec (sym, as, &var_locus)) |
4ee9c684 | 6465 | { |
6466 | m = MATCH_ERROR; | |
6467 | goto cleanup; | |
6468 | } | |
e14bee04 | 6469 | |
b549d2a5 | 6470 | if (sym->attr.cray_pointee && sym->as != NULL) |
6471 | { | |
6472 | /* Fix the array spec. */ | |
8db94b3b | 6473 | m = gfc_mod_pointee_as (sym->as); |
b549d2a5 | 6474 | if (m == MATCH_ERROR) |
6475 | goto cleanup; | |
6476 | } | |
4ee9c684 | 6477 | |
60e19868 | 6478 | if (!gfc_add_attribute (&sym->attr, &var_locus)) |
14efb9b7 | 6479 | { |
6480 | m = MATCH_ERROR; | |
6481 | goto cleanup; | |
6482 | } | |
6483 | ||
4ee9c684 | 6484 | if ((current_attr.external || current_attr.intrinsic) |
6485 | && sym->attr.flavor != FL_PROCEDURE | |
60e19868 | 6486 | && !gfc_add_flavor (&sym->attr, FL_PROCEDURE, sym->name, NULL)) |
4ee9c684 | 6487 | { |
6488 | m = MATCH_ERROR; | |
6489 | goto cleanup; | |
6490 | } | |
6491 | ||
1e057e9b | 6492 | add_hidden_procptr_result (sym); |
6493 | ||
4ee9c684 | 6494 | return MATCH_YES; |
6495 | ||
6496 | cleanup: | |
6497 | gfc_free_array_spec (as); | |
6498 | return m; | |
6499 | } | |
6500 | ||
6501 | ||
6502 | /* Generic attribute declaration subroutine. Used for attributes that | |
6503 | just have a list of names. */ | |
6504 | ||
6505 | static match | |
6506 | attr_decl (void) | |
6507 | { | |
6508 | match m; | |
6509 | ||
6510 | /* Gobble the optional double colon, by simply ignoring the result | |
6511 | of gfc_match(). */ | |
6512 | gfc_match (" ::"); | |
6513 | ||
6514 | for (;;) | |
6515 | { | |
6516 | m = attr_decl1 (); | |
6517 | if (m != MATCH_YES) | |
6518 | break; | |
6519 | ||
6520 | if (gfc_match_eos () == MATCH_YES) | |
6521 | { | |
6522 | m = MATCH_YES; | |
6523 | break; | |
6524 | } | |
6525 | ||
6526 | if (gfc_match_char (',') != MATCH_YES) | |
6527 | { | |
6528 | gfc_error ("Unexpected character in variable list at %C"); | |
6529 | m = MATCH_ERROR; | |
6530 | break; | |
6531 | } | |
6532 | } | |
6533 | ||
6534 | return m; | |
6535 | } | |
6536 | ||
6537 | ||
b549d2a5 | 6538 | /* This routine matches Cray Pointer declarations of the form: |
6539 | pointer ( <pointer>, <pointee> ) | |
6540 | or | |
e14bee04 | 6541 | pointer ( <pointer1>, <pointee1> ), ( <pointer2>, <pointee2> ), ... |
6542 | The pointer, if already declared, should be an integer. Otherwise, we | |
b549d2a5 | 6543 | set it as BT_INTEGER with kind gfc_index_integer_kind. The pointee may |
6544 | be either a scalar, or an array declaration. No space is allocated for | |
e14bee04 | 6545 | the pointee. For the statement |
b549d2a5 | 6546 | pointer (ipt, ar(10)) |
6547 | any subsequent uses of ar will be translated (in C-notation) as | |
e14bee04 | 6548 | ar(i) => ((<type> *) ipt)(i) |
b7bf3f81 | 6549 | After gimplification, pointee variable will disappear in the code. */ |
b549d2a5 | 6550 | |
6551 | static match | |
6552 | cray_pointer_decl (void) | |
6553 | { | |
6554 | match m; | |
aff518b0 | 6555 | gfc_array_spec *as = NULL; |
b549d2a5 | 6556 | gfc_symbol *cptr; /* Pointer symbol. */ |
6557 | gfc_symbol *cpte; /* Pointee symbol. */ | |
6558 | locus var_locus; | |
6559 | bool done = false; | |
6560 | ||
6561 | while (!done) | |
6562 | { | |
6563 | if (gfc_match_char ('(') != MATCH_YES) | |
6564 | { | |
6565 | gfc_error ("Expected '(' at %C"); | |
e14bee04 | 6566 | return MATCH_ERROR; |
b549d2a5 | 6567 | } |
e14bee04 | 6568 | |
b549d2a5 | 6569 | /* Match pointer. */ |
6570 | var_locus = gfc_current_locus; | |
6571 | gfc_clear_attr (¤t_attr); | |
6572 | gfc_add_cray_pointer (¤t_attr, &var_locus); | |
6573 | current_ts.type = BT_INTEGER; | |
6574 | current_ts.kind = gfc_index_integer_kind; | |
6575 | ||
e14bee04 | 6576 | m = gfc_match_symbol (&cptr, 0); |
b549d2a5 | 6577 | if (m != MATCH_YES) |
6578 | { | |
6579 | gfc_error ("Expected variable name at %C"); | |
6580 | return m; | |
6581 | } | |
e14bee04 | 6582 | |
60e19868 | 6583 | if (!gfc_add_cray_pointer (&cptr->attr, &var_locus)) |
b549d2a5 | 6584 | return MATCH_ERROR; |
6585 | ||
e14bee04 | 6586 | gfc_set_sym_referenced (cptr); |
b549d2a5 | 6587 | |
6588 | if (cptr->ts.type == BT_UNKNOWN) /* Override the type, if necessary. */ | |
6589 | { | |
6590 | cptr->ts.type = BT_INTEGER; | |
e14bee04 | 6591 | cptr->ts.kind = gfc_index_integer_kind; |
b549d2a5 | 6592 | } |
6593 | else if (cptr->ts.type != BT_INTEGER) | |
6594 | { | |
7698a624 | 6595 | gfc_error ("Cray pointer at %C must be an integer"); |
b549d2a5 | 6596 | return MATCH_ERROR; |
6597 | } | |
6598 | else if (cptr->ts.kind < gfc_index_integer_kind) | |
6599 | gfc_warning ("Cray pointer at %C has %d bytes of precision;" | |
7698a624 | 6600 | " memory addresses require %d bytes", |
1a9745d2 | 6601 | cptr->ts.kind, gfc_index_integer_kind); |
b549d2a5 | 6602 | |
6603 | if (gfc_match_char (',') != MATCH_YES) | |
6604 | { | |
6605 | gfc_error ("Expected \",\" at %C"); | |
e14bee04 | 6606 | return MATCH_ERROR; |
b549d2a5 | 6607 | } |
6608 | ||
e14bee04 | 6609 | /* Match Pointee. */ |
b549d2a5 | 6610 | var_locus = gfc_current_locus; |
6611 | gfc_clear_attr (¤t_attr); | |
6612 | gfc_add_cray_pointee (¤t_attr, &var_locus); | |
6613 | current_ts.type = BT_UNKNOWN; | |
6614 | current_ts.kind = 0; | |
6615 | ||
6616 | m = gfc_match_symbol (&cpte, 0); | |
6617 | if (m != MATCH_YES) | |
6618 | { | |
6619 | gfc_error ("Expected variable name at %C"); | |
6620 | return m; | |
6621 | } | |
e14bee04 | 6622 | |
b549d2a5 | 6623 | /* Check for an optional array spec. */ |
aff518b0 | 6624 | m = gfc_match_array_spec (&as, true, false); |
b549d2a5 | 6625 | if (m == MATCH_ERROR) |
6626 | { | |
6627 | gfc_free_array_spec (as); | |
6628 | return m; | |
6629 | } | |
6630 | else if (m == MATCH_NO) | |
6631 | { | |
6632 | gfc_free_array_spec (as); | |
6633 | as = NULL; | |
8db94b3b | 6634 | } |
b549d2a5 | 6635 | |
60e19868 | 6636 | if (!gfc_add_cray_pointee (&cpte->attr, &var_locus)) |
b549d2a5 | 6637 | return MATCH_ERROR; |
6638 | ||
6639 | gfc_set_sym_referenced (cpte); | |
6640 | ||
6641 | if (cpte->as == NULL) | |
6642 | { | |
60e19868 | 6643 | if (!gfc_set_array_spec (cpte, as, &var_locus)) |
b549d2a5 | 6644 | gfc_internal_error ("Couldn't set Cray pointee array spec."); |
6645 | } | |
6646 | else if (as != NULL) | |
6647 | { | |
7698a624 | 6648 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
b549d2a5 | 6649 | gfc_free_array_spec (as); |
6650 | return MATCH_ERROR; | |
6651 | } | |
8db94b3b | 6652 | |
b549d2a5 | 6653 | as = NULL; |
8db94b3b | 6654 | |
b549d2a5 | 6655 | if (cpte->as != NULL) |
6656 | { | |
6657 | /* Fix array spec. */ | |
6658 | m = gfc_mod_pointee_as (cpte->as); | |
6659 | if (m == MATCH_ERROR) | |
6660 | return m; | |
8db94b3b | 6661 | } |
6662 | ||
b549d2a5 | 6663 | /* Point the Pointee at the Pointer. */ |
b7bf3f81 | 6664 | cpte->cp_pointer = cptr; |
b549d2a5 | 6665 | |
6666 | if (gfc_match_char (')') != MATCH_YES) | |
6667 | { | |
6668 | gfc_error ("Expected \")\" at %C"); | |
8db94b3b | 6669 | return MATCH_ERROR; |
b549d2a5 | 6670 | } |
6671 | m = gfc_match_char (','); | |
6672 | if (m != MATCH_YES) | |
6673 | done = true; /* Stop searching for more declarations. */ | |
6674 | ||
6675 | } | |
8db94b3b | 6676 | |
b549d2a5 | 6677 | if (m == MATCH_ERROR /* Failed when trying to find ',' above. */ |
6678 | || gfc_match_eos () != MATCH_YES) | |
6679 | { | |
6680 | gfc_error ("Expected \",\" or end of statement at %C"); | |
6681 | return MATCH_ERROR; | |
6682 | } | |
6683 | return MATCH_YES; | |
6684 | } | |
6685 | ||
6686 | ||
4ee9c684 | 6687 | match |
6688 | gfc_match_external (void) | |
6689 | { | |
6690 | ||
6691 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 6692 | current_attr.external = 1; |
4ee9c684 | 6693 | |
6694 | return attr_decl (); | |
6695 | } | |
6696 | ||
6697 | ||
4ee9c684 | 6698 | match |
6699 | gfc_match_intent (void) | |
6700 | { | |
6701 | sym_intent intent; | |
6702 | ||
6a7084d7 | 6703 | /* This is not allowed within a BLOCK construct! */ |
6704 | if (gfc_current_state () == COMP_BLOCK) | |
6705 | { | |
6706 | gfc_error ("INTENT is not allowed inside of BLOCK at %C"); | |
6707 | return MATCH_ERROR; | |
6708 | } | |
6709 | ||
4ee9c684 | 6710 | intent = match_intent_spec (); |
6711 | if (intent == INTENT_UNKNOWN) | |
6712 | return MATCH_ERROR; | |
6713 | ||
6714 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 6715 | current_attr.intent = intent; |
4ee9c684 | 6716 | |
6717 | return attr_decl (); | |
6718 | } | |
6719 | ||
6720 | ||
6721 | match | |
6722 | gfc_match_intrinsic (void) | |
6723 | { | |
6724 | ||
6725 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 6726 | current_attr.intrinsic = 1; |
4ee9c684 | 6727 | |
6728 | return attr_decl (); | |
6729 | } | |
6730 | ||
6731 | ||
6732 | match | |
6733 | gfc_match_optional (void) | |
6734 | { | |
6a7084d7 | 6735 | /* This is not allowed within a BLOCK construct! */ |
6736 | if (gfc_current_state () == COMP_BLOCK) | |
6737 | { | |
6738 | gfc_error ("OPTIONAL is not allowed inside of BLOCK at %C"); | |
6739 | return MATCH_ERROR; | |
6740 | } | |
4ee9c684 | 6741 | |
6742 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 6743 | current_attr.optional = 1; |
4ee9c684 | 6744 | |
6745 | return attr_decl (); | |
6746 | } | |
6747 | ||
6748 | ||
6749 | match | |
6750 | gfc_match_pointer (void) | |
6751 | { | |
b549d2a5 | 6752 | gfc_gobble_whitespace (); |
e0be6f02 | 6753 | if (gfc_peek_ascii_char () == '(') |
b549d2a5 | 6754 | { |
6755 | if (!gfc_option.flag_cray_pointer) | |
6756 | { | |
1a9745d2 | 6757 | gfc_error ("Cray pointer declaration at %C requires -fcray-pointer " |
6758 | "flag"); | |
b549d2a5 | 6759 | return MATCH_ERROR; |
6760 | } | |
6761 | return cray_pointer_decl (); | |
6762 | } | |
6763 | else | |
6764 | { | |
6765 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 6766 | current_attr.pointer = 1; |
8db94b3b | 6767 | |
b549d2a5 | 6768 | return attr_decl (); |
6769 | } | |
4ee9c684 | 6770 | } |
6771 | ||
6772 | ||
6773 | match | |
6774 | gfc_match_allocatable (void) | |
6775 | { | |
4ee9c684 | 6776 | gfc_clear_attr (¤t_attr); |
14efb9b7 | 6777 | current_attr.allocatable = 1; |
4ee9c684 | 6778 | |
6779 | return attr_decl (); | |
6780 | } | |
6781 | ||
6782 | ||
aff518b0 | 6783 | match |
6784 | gfc_match_codimension (void) | |
6785 | { | |
6786 | gfc_clear_attr (¤t_attr); | |
6787 | current_attr.codimension = 1; | |
6788 | ||
6789 | return attr_decl (); | |
6790 | } | |
6791 | ||
6792 | ||
b3c3927c | 6793 | match |
6794 | gfc_match_contiguous (void) | |
6795 | { | |
60e19868 | 6796 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS statement at %C")) |
b3c3927c | 6797 | return MATCH_ERROR; |
6798 | ||
6799 | gfc_clear_attr (¤t_attr); | |
6800 | current_attr.contiguous = 1; | |
6801 | ||
6802 | return attr_decl (); | |
6803 | } | |
6804 | ||
6805 | ||
4ee9c684 | 6806 | match |
6807 | gfc_match_dimension (void) | |
6808 | { | |
4ee9c684 | 6809 | gfc_clear_attr (¤t_attr); |
14efb9b7 | 6810 | current_attr.dimension = 1; |
4ee9c684 | 6811 | |
6812 | return attr_decl (); | |
6813 | } | |
6814 | ||
6815 | ||
6816 | match | |
6817 | gfc_match_target (void) | |
6818 | { | |
4ee9c684 | 6819 | gfc_clear_attr (¤t_attr); |
14efb9b7 | 6820 | current_attr.target = 1; |
4ee9c684 | 6821 | |
6822 | return attr_decl (); | |
6823 | } | |
6824 | ||
6825 | ||
6826 | /* Match the list of entities being specified in a PUBLIC or PRIVATE | |
6827 | statement. */ | |
6828 | ||
6829 | static match | |
6830 | access_attr_decl (gfc_statement st) | |
6831 | { | |
6832 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6833 | interface_type type; | |
6834 | gfc_user_op *uop; | |
c2958b6b | 6835 | gfc_symbol *sym, *dt_sym; |
dcb1b019 | 6836 | gfc_intrinsic_op op; |
4ee9c684 | 6837 | match m; |
6838 | ||
6839 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
6840 | goto done; | |
6841 | ||
6842 | for (;;) | |
6843 | { | |
dcb1b019 | 6844 | m = gfc_match_generic_spec (&type, name, &op); |
4ee9c684 | 6845 | if (m == MATCH_NO) |
6846 | goto syntax; | |
6847 | if (m == MATCH_ERROR) | |
6848 | return MATCH_ERROR; | |
6849 | ||
6850 | switch (type) | |
6851 | { | |
6852 | case INTERFACE_NAMELESS: | |
94fa7146 | 6853 | case INTERFACE_ABSTRACT: |
4ee9c684 | 6854 | goto syntax; |
6855 | ||
6856 | case INTERFACE_GENERIC: | |
6857 | if (gfc_get_symbol (name, NULL, &sym)) | |
6858 | goto done; | |
6859 | ||
60e19868 | 6860 | if (!gfc_add_access (&sym->attr, |
6861 | (st == ST_PUBLIC) | |
6862 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
6863 | sym->name, NULL)) | |
4ee9c684 | 6864 | return MATCH_ERROR; |
6865 | ||
c2958b6b | 6866 | if (sym->attr.generic && (dt_sym = gfc_find_dt_in_generic (sym)) |
60e19868 | 6867 | && !gfc_add_access (&dt_sym->attr, |
6868 | (st == ST_PUBLIC) | |
6869 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
6870 | sym->name, NULL)) | |
c2958b6b | 6871 | return MATCH_ERROR; |
6872 | ||
4ee9c684 | 6873 | break; |
6874 | ||
6875 | case INTERFACE_INTRINSIC_OP: | |
dcb1b019 | 6876 | if (gfc_current_ns->operator_access[op] == ACCESS_UNKNOWN) |
4ee9c684 | 6877 | { |
0c482c1d | 6878 | gfc_intrinsic_op other_op; |
6879 | ||
dcb1b019 | 6880 | gfc_current_ns->operator_access[op] = |
4ee9c684 | 6881 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; |
0c482c1d | 6882 | |
6883 | /* Handle the case if there is another op with the same | |
6884 | function, for INTRINSIC_EQ vs. INTRINSIC_EQ_OS and so on. */ | |
6885 | other_op = gfc_equivalent_op (op); | |
6886 | ||
6887 | if (other_op != INTRINSIC_NONE) | |
6888 | gfc_current_ns->operator_access[other_op] = | |
6889 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
6890 | ||
4ee9c684 | 6891 | } |
6892 | else | |
6893 | { | |
6894 | gfc_error ("Access specification of the %s operator at %C has " | |
dcb1b019 | 6895 | "already been specified", gfc_op2string (op)); |
4ee9c684 | 6896 | goto done; |
6897 | } | |
6898 | ||
6899 | break; | |
6900 | ||
6901 | case INTERFACE_USER_OP: | |
6902 | uop = gfc_get_uop (name); | |
6903 | ||
6904 | if (uop->access == ACCESS_UNKNOWN) | |
6905 | { | |
1a9745d2 | 6906 | uop->access = (st == ST_PUBLIC) |
6907 | ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
4ee9c684 | 6908 | } |
6909 | else | |
6910 | { | |
1a9745d2 | 6911 | gfc_error ("Access specification of the .%s. operator at %C " |
6912 | "has already been specified", sym->name); | |
4ee9c684 | 6913 | goto done; |
6914 | } | |
6915 | ||
6916 | break; | |
6917 | } | |
6918 | ||
6919 | if (gfc_match_char (',') == MATCH_NO) | |
6920 | break; | |
6921 | } | |
6922 | ||
6923 | if (gfc_match_eos () != MATCH_YES) | |
6924 | goto syntax; | |
6925 | return MATCH_YES; | |
6926 | ||
6927 | syntax: | |
6928 | gfc_syntax_error (st); | |
6929 | ||
6930 | done: | |
6931 | return MATCH_ERROR; | |
6932 | } | |
6933 | ||
6934 | ||
3ea52af3 | 6935 | match |
6936 | gfc_match_protected (void) | |
6937 | { | |
6938 | gfc_symbol *sym; | |
6939 | match m; | |
6940 | ||
6941 | if (gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
6942 | { | |
6943 | gfc_error ("PROTECTED at %C only allowed in specification " | |
6944 | "part of a module"); | |
6945 | return MATCH_ERROR; | |
6946 | ||
6947 | } | |
6948 | ||
60e19868 | 6949 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED statement at %C")) |
3ea52af3 | 6950 | return MATCH_ERROR; |
6951 | ||
6952 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
6953 | { | |
6954 | return MATCH_ERROR; | |
6955 | } | |
6956 | ||
6957 | if (gfc_match_eos () == MATCH_YES) | |
6958 | goto syntax; | |
6959 | ||
6960 | for(;;) | |
6961 | { | |
6962 | m = gfc_match_symbol (&sym, 0); | |
6963 | switch (m) | |
6964 | { | |
6965 | case MATCH_YES: | |
60e19868 | 6966 | if (!gfc_add_protected (&sym->attr, sym->name, &gfc_current_locus)) |
3ea52af3 | 6967 | return MATCH_ERROR; |
6968 | goto next_item; | |
6969 | ||
6970 | case MATCH_NO: | |
6971 | break; | |
6972 | ||
6973 | case MATCH_ERROR: | |
6974 | return MATCH_ERROR; | |
6975 | } | |
6976 | ||
6977 | next_item: | |
6978 | if (gfc_match_eos () == MATCH_YES) | |
6979 | break; | |
6980 | if (gfc_match_char (',') != MATCH_YES) | |
6981 | goto syntax; | |
6982 | } | |
6983 | ||
6984 | return MATCH_YES; | |
6985 | ||
6986 | syntax: | |
6987 | gfc_error ("Syntax error in PROTECTED statement at %C"); | |
6988 | return MATCH_ERROR; | |
6989 | } | |
6990 | ||
6991 | ||
a0527218 | 6992 | /* The PRIVATE statement is a bit weird in that it can be an attribute |
69b1505f | 6993 | declaration, but also works as a standalone statement inside of a |
4ee9c684 | 6994 | type declaration or a module. */ |
6995 | ||
6996 | match | |
1a9745d2 | 6997 | gfc_match_private (gfc_statement *st) |
4ee9c684 | 6998 | { |
6999 | ||
7000 | if (gfc_match ("private") != MATCH_YES) | |
7001 | return MATCH_NO; | |
7002 | ||
e14bee04 | 7003 | if (gfc_current_state () != COMP_MODULE |
7fd88f6e | 7004 | && !(gfc_current_state () == COMP_DERIVED |
7005 | && gfc_state_stack->previous | |
7006 | && gfc_state_stack->previous->state == COMP_MODULE) | |
7007 | && !(gfc_current_state () == COMP_DERIVED_CONTAINS | |
7008 | && gfc_state_stack->previous && gfc_state_stack->previous->previous | |
7009 | && gfc_state_stack->previous->previous->state == COMP_MODULE)) | |
e14bee04 | 7010 | { |
7011 | gfc_error ("PRIVATE statement at %C is only allowed in the " | |
7012 | "specification part of a module"); | |
7013 | return MATCH_ERROR; | |
7014 | } | |
7015 | ||
4ee9c684 | 7016 | if (gfc_current_state () == COMP_DERIVED) |
7017 | { | |
7018 | if (gfc_match_eos () == MATCH_YES) | |
7019 | { | |
7020 | *st = ST_PRIVATE; | |
7021 | return MATCH_YES; | |
7022 | } | |
7023 | ||
7024 | gfc_syntax_error (ST_PRIVATE); | |
7025 | return MATCH_ERROR; | |
7026 | } | |
7027 | ||
7028 | if (gfc_match_eos () == MATCH_YES) | |
7029 | { | |
7030 | *st = ST_PRIVATE; | |
7031 | return MATCH_YES; | |
7032 | } | |
7033 | ||
7034 | *st = ST_ATTR_DECL; | |
7035 | return access_attr_decl (ST_PRIVATE); | |
7036 | } | |
7037 | ||
7038 | ||
7039 | match | |
1a9745d2 | 7040 | gfc_match_public (gfc_statement *st) |
4ee9c684 | 7041 | { |
7042 | ||
7043 | if (gfc_match ("public") != MATCH_YES) | |
7044 | return MATCH_NO; | |
7045 | ||
e14bee04 | 7046 | if (gfc_current_state () != COMP_MODULE) |
7047 | { | |
7048 | gfc_error ("PUBLIC statement at %C is only allowed in the " | |
7049 | "specification part of a module"); | |
7050 | return MATCH_ERROR; | |
7051 | } | |
7052 | ||
4ee9c684 | 7053 | if (gfc_match_eos () == MATCH_YES) |
7054 | { | |
7055 | *st = ST_PUBLIC; | |
7056 | return MATCH_YES; | |
7057 | } | |
7058 | ||
7059 | *st = ST_ATTR_DECL; | |
7060 | return access_attr_decl (ST_PUBLIC); | |
7061 | } | |
7062 | ||
7063 | ||
7064 | /* Workhorse for gfc_match_parameter. */ | |
7065 | ||
7066 | static match | |
7067 | do_parm (void) | |
7068 | { | |
7069 | gfc_symbol *sym; | |
7070 | gfc_expr *init; | |
7071 | match m; | |
60e19868 | 7072 | bool t; |
4ee9c684 | 7073 | |
7074 | m = gfc_match_symbol (&sym, 0); | |
7075 | if (m == MATCH_NO) | |
7076 | gfc_error ("Expected variable name at %C in PARAMETER statement"); | |
7077 | ||
7078 | if (m != MATCH_YES) | |
7079 | return m; | |
7080 | ||
7081 | if (gfc_match_char ('=') == MATCH_NO) | |
7082 | { | |
7083 | gfc_error ("Expected = sign in PARAMETER statement at %C"); | |
7084 | return MATCH_ERROR; | |
7085 | } | |
7086 | ||
7087 | m = gfc_match_init_expr (&init); | |
7088 | if (m == MATCH_NO) | |
7089 | gfc_error ("Expected expression at %C in PARAMETER statement"); | |
7090 | if (m != MATCH_YES) | |
7091 | return m; | |
7092 | ||
7093 | if (sym->ts.type == BT_UNKNOWN | |
60e19868 | 7094 | && !gfc_set_default_type (sym, 1, NULL)) |
4ee9c684 | 7095 | { |
7096 | m = MATCH_ERROR; | |
7097 | goto cleanup; | |
7098 | } | |
7099 | ||
60e19868 | 7100 | if (!gfc_check_assign_symbol (sym, NULL, init) |
7101 | || !gfc_add_flavor (&sym->attr, FL_PARAMETER, sym->name, NULL)) | |
4ee9c684 | 7102 | { |
7103 | m = MATCH_ERROR; | |
7104 | goto cleanup; | |
7105 | } | |
7106 | ||
13aebeb0 | 7107 | if (sym->value) |
7108 | { | |
7109 | gfc_error ("Initializing already initialized variable at %C"); | |
7110 | m = MATCH_ERROR; | |
7111 | goto cleanup; | |
7112 | } | |
7113 | ||
f16404e3 | 7114 | t = add_init_expr_to_sym (sym->name, &init, &gfc_current_locus); |
60e19868 | 7115 | return (t) ? MATCH_YES : MATCH_ERROR; |
4ee9c684 | 7116 | |
7117 | cleanup: | |
7118 | gfc_free_expr (init); | |
7119 | return m; | |
7120 | } | |
7121 | ||
7122 | ||
7123 | /* Match a parameter statement, with the weird syntax that these have. */ | |
7124 | ||
7125 | match | |
7126 | gfc_match_parameter (void) | |
7127 | { | |
7128 | match m; | |
7129 | ||
7130 | if (gfc_match_char ('(') == MATCH_NO) | |
7131 | return MATCH_NO; | |
7132 | ||
7133 | for (;;) | |
7134 | { | |
7135 | m = do_parm (); | |
7136 | if (m != MATCH_YES) | |
7137 | break; | |
7138 | ||
7139 | if (gfc_match (" )%t") == MATCH_YES) | |
7140 | break; | |
7141 | ||
7142 | if (gfc_match_char (',') != MATCH_YES) | |
7143 | { | |
7144 | gfc_error ("Unexpected characters in PARAMETER statement at %C"); | |
7145 | m = MATCH_ERROR; | |
7146 | break; | |
7147 | } | |
7148 | } | |
7149 | ||
7150 | return m; | |
7151 | } | |
7152 | ||
7153 | ||
7154 | /* Save statements have a special syntax. */ | |
7155 | ||
7156 | match | |
7157 | gfc_match_save (void) | |
7158 | { | |
82f5ee13 | 7159 | char n[GFC_MAX_SYMBOL_LEN+1]; |
7160 | gfc_common_head *c; | |
4ee9c684 | 7161 | gfc_symbol *sym; |
7162 | match m; | |
7163 | ||
7164 | if (gfc_match_eos () == MATCH_YES) | |
7165 | { | |
7166 | if (gfc_current_ns->seen_save) | |
7167 | { | |
60e19868 | 7168 | if (!gfc_notify_std (GFC_STD_LEGACY, "Blanket SAVE statement at %C " |
7169 | "follows previous SAVE statement")) | |
76e82f95 | 7170 | return MATCH_ERROR; |
4ee9c684 | 7171 | } |
7172 | ||
7173 | gfc_current_ns->save_all = gfc_current_ns->seen_save = 1; | |
7174 | return MATCH_YES; | |
7175 | } | |
7176 | ||
7177 | if (gfc_current_ns->save_all) | |
7178 | { | |
60e19868 | 7179 | if (!gfc_notify_std (GFC_STD_LEGACY, "SAVE statement at %C follows " |
7180 | "blanket SAVE statement")) | |
76e82f95 | 7181 | return MATCH_ERROR; |
4ee9c684 | 7182 | } |
7183 | ||
7184 | gfc_match (" ::"); | |
7185 | ||
7186 | for (;;) | |
7187 | { | |
7188 | m = gfc_match_symbol (&sym, 0); | |
7189 | switch (m) | |
7190 | { | |
7191 | case MATCH_YES: | |
60e19868 | 7192 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, |
7193 | &gfc_current_locus)) | |
4ee9c684 | 7194 | return MATCH_ERROR; |
7195 | goto next_item; | |
7196 | ||
7197 | case MATCH_NO: | |
7198 | break; | |
7199 | ||
7200 | case MATCH_ERROR: | |
7201 | return MATCH_ERROR; | |
7202 | } | |
7203 | ||
82f5ee13 | 7204 | m = gfc_match (" / %n /", &n); |
4ee9c684 | 7205 | if (m == MATCH_ERROR) |
7206 | return MATCH_ERROR; | |
7207 | if (m == MATCH_NO) | |
7208 | goto syntax; | |
7209 | ||
403ddc45 | 7210 | c = gfc_get_common (n, 0); |
82f5ee13 | 7211 | c->saved = 1; |
7212 | ||
4ee9c684 | 7213 | gfc_current_ns->seen_save = 1; |
7214 | ||
7215 | next_item: | |
7216 | if (gfc_match_eos () == MATCH_YES) | |
7217 | break; | |
7218 | if (gfc_match_char (',') != MATCH_YES) | |
7219 | goto syntax; | |
7220 | } | |
7221 | ||
7222 | return MATCH_YES; | |
7223 | ||
7224 | syntax: | |
7225 | gfc_error ("Syntax error in SAVE statement at %C"); | |
7226 | return MATCH_ERROR; | |
7227 | } | |
7228 | ||
7229 | ||
8f6339b6 | 7230 | match |
7231 | gfc_match_value (void) | |
7232 | { | |
7233 | gfc_symbol *sym; | |
7234 | match m; | |
7235 | ||
6a7084d7 | 7236 | /* This is not allowed within a BLOCK construct! */ |
7237 | if (gfc_current_state () == COMP_BLOCK) | |
7238 | { | |
7239 | gfc_error ("VALUE is not allowed inside of BLOCK at %C"); | |
7240 | return MATCH_ERROR; | |
7241 | } | |
7242 | ||
60e19868 | 7243 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE statement at %C")) |
8f6339b6 | 7244 | return MATCH_ERROR; |
7245 | ||
7246 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7247 | { | |
7248 | return MATCH_ERROR; | |
7249 | } | |
7250 | ||
7251 | if (gfc_match_eos () == MATCH_YES) | |
7252 | goto syntax; | |
7253 | ||
7254 | for(;;) | |
7255 | { | |
7256 | m = gfc_match_symbol (&sym, 0); | |
7257 | switch (m) | |
7258 | { | |
7259 | case MATCH_YES: | |
60e19868 | 7260 | if (!gfc_add_value (&sym->attr, sym->name, &gfc_current_locus)) |
8f6339b6 | 7261 | return MATCH_ERROR; |
7262 | goto next_item; | |
7263 | ||
7264 | case MATCH_NO: | |
7265 | break; | |
7266 | ||
7267 | case MATCH_ERROR: | |
7268 | return MATCH_ERROR; | |
7269 | } | |
7270 | ||
7271 | next_item: | |
7272 | if (gfc_match_eos () == MATCH_YES) | |
7273 | break; | |
7274 | if (gfc_match_char (',') != MATCH_YES) | |
7275 | goto syntax; | |
7276 | } | |
7277 | ||
7278 | return MATCH_YES; | |
7279 | ||
7280 | syntax: | |
7281 | gfc_error ("Syntax error in VALUE statement at %C"); | |
7282 | return MATCH_ERROR; | |
7283 | } | |
7284 | ||
f6d0e37a | 7285 | |
ef814c81 | 7286 | match |
7287 | gfc_match_volatile (void) | |
7288 | { | |
7289 | gfc_symbol *sym; | |
7290 | match m; | |
7291 | ||
60e19868 | 7292 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE statement at %C")) |
ef814c81 | 7293 | return MATCH_ERROR; |
7294 | ||
7295 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7296 | { | |
7297 | return MATCH_ERROR; | |
7298 | } | |
7299 | ||
7300 | if (gfc_match_eos () == MATCH_YES) | |
7301 | goto syntax; | |
7302 | ||
7303 | for(;;) | |
7304 | { | |
8db94b3b | 7305 | /* VOLATILE is special because it can be added to host-associated |
293d72e0 | 7306 | symbols locally. Except for coarrays. */ |
2f241857 | 7307 | m = gfc_match_symbol (&sym, 1); |
ef814c81 | 7308 | switch (m) |
7309 | { | |
7310 | case MATCH_YES: | |
aff518b0 | 7311 | /* F2008, C560+C561. VOLATILE for host-/use-associated variable or |
7312 | for variable in a BLOCK which is defined outside of the BLOCK. */ | |
7313 | if (sym->ns != gfc_current_ns && sym->attr.codimension) | |
7314 | { | |
7315 | gfc_error ("Specifying VOLATILE for coarray variable '%s' at " | |
7316 | "%C, which is use-/host-associated", sym->name); | |
7317 | return MATCH_ERROR; | |
7318 | } | |
60e19868 | 7319 | if (!gfc_add_volatile (&sym->attr, sym->name, &gfc_current_locus)) |
ef814c81 | 7320 | return MATCH_ERROR; |
7321 | goto next_item; | |
7322 | ||
7323 | case MATCH_NO: | |
7324 | break; | |
7325 | ||
7326 | case MATCH_ERROR: | |
7327 | return MATCH_ERROR; | |
7328 | } | |
7329 | ||
7330 | next_item: | |
7331 | if (gfc_match_eos () == MATCH_YES) | |
7332 | break; | |
7333 | if (gfc_match_char (',') != MATCH_YES) | |
7334 | goto syntax; | |
7335 | } | |
7336 | ||
7337 | return MATCH_YES; | |
7338 | ||
7339 | syntax: | |
7340 | gfc_error ("Syntax error in VOLATILE statement at %C"); | |
7341 | return MATCH_ERROR; | |
7342 | } | |
7343 | ||
7344 | ||
738928be | 7345 | match |
7346 | gfc_match_asynchronous (void) | |
7347 | { | |
7348 | gfc_symbol *sym; | |
7349 | match m; | |
7350 | ||
60e19868 | 7351 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS statement at %C")) |
738928be | 7352 | return MATCH_ERROR; |
7353 | ||
7354 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7355 | { | |
7356 | return MATCH_ERROR; | |
7357 | } | |
7358 | ||
7359 | if (gfc_match_eos () == MATCH_YES) | |
7360 | goto syntax; | |
7361 | ||
7362 | for(;;) | |
7363 | { | |
8db94b3b | 7364 | /* ASYNCHRONOUS is special because it can be added to host-associated |
738928be | 7365 | symbols locally. */ |
7366 | m = gfc_match_symbol (&sym, 1); | |
7367 | switch (m) | |
7368 | { | |
7369 | case MATCH_YES: | |
60e19868 | 7370 | if (!gfc_add_asynchronous (&sym->attr, sym->name, &gfc_current_locus)) |
738928be | 7371 | return MATCH_ERROR; |
7372 | goto next_item; | |
7373 | ||
7374 | case MATCH_NO: | |
7375 | break; | |
7376 | ||
7377 | case MATCH_ERROR: | |
7378 | return MATCH_ERROR; | |
7379 | } | |
7380 | ||
7381 | next_item: | |
7382 | if (gfc_match_eos () == MATCH_YES) | |
7383 | break; | |
7384 | if (gfc_match_char (',') != MATCH_YES) | |
7385 | goto syntax; | |
7386 | } | |
7387 | ||
7388 | return MATCH_YES; | |
7389 | ||
7390 | syntax: | |
7391 | gfc_error ("Syntax error in ASYNCHRONOUS statement at %C"); | |
7392 | return MATCH_ERROR; | |
7393 | } | |
7394 | ||
7395 | ||
4ee9c684 | 7396 | /* Match a module procedure statement. Note that we have to modify |
7397 | symbols in the parent's namespace because the current one was there | |
89d91d02 | 7398 | to receive symbols that are in an interface's formal argument list. */ |
4ee9c684 | 7399 | |
7400 | match | |
7401 | gfc_match_modproc (void) | |
7402 | { | |
7403 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7404 | gfc_symbol *sym; | |
7405 | match m; | |
d920fb76 | 7406 | locus old_locus; |
63d42079 | 7407 | gfc_namespace *module_ns; |
94ce9f74 | 7408 | gfc_interface *old_interface_head, *interface; |
4ee9c684 | 7409 | |
7410 | if (gfc_state_stack->state != COMP_INTERFACE | |
7411 | || gfc_state_stack->previous == NULL | |
5cf92482 | 7412 | || current_interface.type == INTERFACE_NAMELESS |
7413 | || current_interface.type == INTERFACE_ABSTRACT) | |
4ee9c684 | 7414 | { |
1a9745d2 | 7415 | gfc_error ("MODULE PROCEDURE at %C must be in a generic module " |
7416 | "interface"); | |
4ee9c684 | 7417 | return MATCH_ERROR; |
7418 | } | |
7419 | ||
63d42079 | 7420 | module_ns = gfc_current_ns->parent; |
7421 | for (; module_ns; module_ns = module_ns->parent) | |
15ca3865 | 7422 | if (module_ns->proc_name->attr.flavor == FL_MODULE |
7423 | || module_ns->proc_name->attr.flavor == FL_PROGRAM | |
7424 | || (module_ns->proc_name->attr.flavor == FL_PROCEDURE | |
7425 | && !module_ns->proc_name->attr.contained)) | |
63d42079 | 7426 | break; |
7427 | ||
7428 | if (module_ns == NULL) | |
7429 | return MATCH_ERROR; | |
7430 | ||
94ce9f74 | 7431 | /* Store the current state of the interface. We will need it if we |
7432 | end up with a syntax error and need to recover. */ | |
7433 | old_interface_head = gfc_current_interface_head (); | |
7434 | ||
d920fb76 | 7435 | /* Check if the F2008 optional double colon appears. */ |
7436 | gfc_gobble_whitespace (); | |
7437 | old_locus = gfc_current_locus; | |
7438 | if (gfc_match ("::") == MATCH_YES) | |
7439 | { | |
60e19868 | 7440 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
7441 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
d920fb76 | 7442 | return MATCH_ERROR; |
7443 | } | |
7444 | else | |
7445 | gfc_current_locus = old_locus; | |
8db94b3b | 7446 | |
4ee9c684 | 7447 | for (;;) |
7448 | { | |
94ce9f74 | 7449 | bool last = false; |
d920fb76 | 7450 | old_locus = gfc_current_locus; |
94ce9f74 | 7451 | |
4ee9c684 | 7452 | m = gfc_match_name (name); |
7453 | if (m == MATCH_NO) | |
7454 | goto syntax; | |
7455 | if (m != MATCH_YES) | |
7456 | return MATCH_ERROR; | |
7457 | ||
94ce9f74 | 7458 | /* Check for syntax error before starting to add symbols to the |
7459 | current namespace. */ | |
7460 | if (gfc_match_eos () == MATCH_YES) | |
7461 | last = true; | |
d920fb76 | 7462 | |
94ce9f74 | 7463 | if (!last && gfc_match_char (',') != MATCH_YES) |
7464 | goto syntax; | |
7465 | ||
7466 | /* Now we're sure the syntax is valid, we process this item | |
7467 | further. */ | |
63d42079 | 7468 | if (gfc_get_symbol (name, module_ns, &sym)) |
4ee9c684 | 7469 | return MATCH_ERROR; |
7470 | ||
15ca3865 | 7471 | if (sym->attr.intrinsic) |
7472 | { | |
7473 | gfc_error ("Intrinsic procedure at %L cannot be a MODULE " | |
7474 | "PROCEDURE", &old_locus); | |
7475 | return MATCH_ERROR; | |
7476 | } | |
7477 | ||
4ee9c684 | 7478 | if (sym->attr.proc != PROC_MODULE |
60e19868 | 7479 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
4ee9c684 | 7480 | return MATCH_ERROR; |
7481 | ||
60e19868 | 7482 | if (!gfc_add_interface (sym)) |
4ee9c684 | 7483 | return MATCH_ERROR; |
7484 | ||
3186f695 | 7485 | sym->attr.mod_proc = 1; |
15ca3865 | 7486 | sym->declared_at = old_locus; |
3186f695 | 7487 | |
94ce9f74 | 7488 | if (last) |
4ee9c684 | 7489 | break; |
4ee9c684 | 7490 | } |
7491 | ||
7492 | return MATCH_YES; | |
7493 | ||
7494 | syntax: | |
94ce9f74 | 7495 | /* Restore the previous state of the interface. */ |
7496 | interface = gfc_current_interface_head (); | |
7497 | gfc_set_current_interface_head (old_interface_head); | |
7498 | ||
7499 | /* Free the new interfaces. */ | |
7500 | while (interface != old_interface_head) | |
7501 | { | |
7502 | gfc_interface *i = interface->next; | |
434f0922 | 7503 | free (interface); |
94ce9f74 | 7504 | interface = i; |
7505 | } | |
7506 | ||
7507 | /* And issue a syntax error. */ | |
4ee9c684 | 7508 | gfc_syntax_error (ST_MODULE_PROC); |
7509 | return MATCH_ERROR; | |
7510 | } | |
7511 | ||
7512 | ||
ea94d76d | 7513 | /* Check a derived type that is being extended. */ |
7a99bc9b | 7514 | |
ea94d76d | 7515 | static gfc_symbol* |
7516 | check_extended_derived_type (char *name) | |
7517 | { | |
7518 | gfc_symbol *extended; | |
7519 | ||
7520 | if (gfc_find_symbol (name, gfc_current_ns, 1, &extended)) | |
7521 | { | |
7522 | gfc_error ("Ambiguous symbol in TYPE definition at %C"); | |
7523 | return NULL; | |
7524 | } | |
7525 | ||
7a99bc9b | 7526 | extended = gfc_find_dt_in_generic (extended); |
7527 | ||
7528 | /* F08:C428. */ | |
ea94d76d | 7529 | if (!extended) |
7530 | { | |
7a99bc9b | 7531 | gfc_error ("Symbol '%s' at %C has not been previously defined", name); |
ea94d76d | 7532 | return NULL; |
7533 | } | |
7534 | ||
7535 | if (extended->attr.flavor != FL_DERIVED) | |
7536 | { | |
7537 | gfc_error ("'%s' in EXTENDS expression at %C is not a " | |
7538 | "derived type", name); | |
7539 | return NULL; | |
7540 | } | |
7541 | ||
7542 | if (extended->attr.is_bind_c) | |
7543 | { | |
7544 | gfc_error ("'%s' cannot be extended at %C because it " | |
7545 | "is BIND(C)", extended->name); | |
7546 | return NULL; | |
7547 | } | |
7548 | ||
7549 | if (extended->attr.sequence) | |
7550 | { | |
7551 | gfc_error ("'%s' cannot be extended at %C because it " | |
7552 | "is a SEQUENCE type", extended->name); | |
7553 | return NULL; | |
7554 | } | |
7555 | ||
7556 | return extended; | |
7557 | } | |
7558 | ||
7559 | ||
c5d33754 | 7560 | /* Match the optional attribute specifiers for a type declaration. |
7561 | Return MATCH_ERROR if an error is encountered in one of the handled | |
7562 | attributes (public, private, bind(c)), MATCH_NO if what's found is | |
7563 | not a handled attribute, and MATCH_YES otherwise. TODO: More error | |
7564 | checking on attribute conflicts needs to be done. */ | |
4ee9c684 | 7565 | |
7566 | match | |
ea94d76d | 7567 | gfc_get_type_attr_spec (symbol_attribute *attr, char *name) |
4ee9c684 | 7568 | { |
c5d33754 | 7569 | /* See if the derived type is marked as private. */ |
4ee9c684 | 7570 | if (gfc_match (" , private") == MATCH_YES) |
7571 | { | |
e14bee04 | 7572 | if (gfc_current_state () != COMP_MODULE) |
4ee9c684 | 7573 | { |
e14bee04 | 7574 | gfc_error ("Derived type at %C can only be PRIVATE in the " |
7575 | "specification part of a module"); | |
4ee9c684 | 7576 | return MATCH_ERROR; |
7577 | } | |
7578 | ||
60e19868 | 7579 | if (!gfc_add_access (attr, ACCESS_PRIVATE, NULL, NULL)) |
4ee9c684 | 7580 | return MATCH_ERROR; |
4ee9c684 | 7581 | } |
c5d33754 | 7582 | else if (gfc_match (" , public") == MATCH_YES) |
4ee9c684 | 7583 | { |
e14bee04 | 7584 | if (gfc_current_state () != COMP_MODULE) |
4ee9c684 | 7585 | { |
e14bee04 | 7586 | gfc_error ("Derived type at %C can only be PUBLIC in the " |
7587 | "specification part of a module"); | |
4ee9c684 | 7588 | return MATCH_ERROR; |
7589 | } | |
7590 | ||
60e19868 | 7591 | if (!gfc_add_access (attr, ACCESS_PUBLIC, NULL, NULL)) |
4ee9c684 | 7592 | return MATCH_ERROR; |
4ee9c684 | 7593 | } |
ac5f2650 | 7594 | else if (gfc_match (" , bind ( c )") == MATCH_YES) |
c5d33754 | 7595 | { |
7596 | /* If the type is defined to be bind(c) it then needs to make | |
7597 | sure that all fields are interoperable. This will | |
7598 | need to be a semantic check on the finished derived type. | |
7599 | See 15.2.3 (lines 9-12) of F2003 draft. */ | |
60e19868 | 7600 | if (!gfc_add_is_bind_c (attr, NULL, &gfc_current_locus, 0)) |
c5d33754 | 7601 | return MATCH_ERROR; |
7602 | ||
7603 | /* TODO: attr conflicts need to be checked, probably in symbol.c. */ | |
7604 | } | |
ac5f2650 | 7605 | else if (gfc_match (" , abstract") == MATCH_YES) |
7606 | { | |
60e19868 | 7607 | if (!gfc_notify_std (GFC_STD_F2003, "ABSTRACT type at %C")) |
ac5f2650 | 7608 | return MATCH_ERROR; |
7609 | ||
60e19868 | 7610 | if (!gfc_add_abstract (attr, &gfc_current_locus)) |
ac5f2650 | 7611 | return MATCH_ERROR; |
7612 | } | |
60e19868 | 7613 | else if (name && gfc_match (" , extends ( %n )", name) == MATCH_YES) |
ea94d76d | 7614 | { |
60e19868 | 7615 | if (!gfc_add_extension (attr, &gfc_current_locus)) |
ea94d76d | 7616 | return MATCH_ERROR; |
7617 | } | |
c5d33754 | 7618 | else |
7619 | return MATCH_NO; | |
7620 | ||
7621 | /* If we get here, something matched. */ | |
7622 | return MATCH_YES; | |
7623 | } | |
7624 | ||
7625 | ||
7626 | /* Match the beginning of a derived type declaration. If a type name | |
7627 | was the result of a function, then it is possible to have a symbol | |
7628 | already to be known as a derived type yet have no components. */ | |
7629 | ||
7630 | match | |
7631 | gfc_match_derived_decl (void) | |
7632 | { | |
7633 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
ea94d76d | 7634 | char parent[GFC_MAX_SYMBOL_LEN + 1]; |
c5d33754 | 7635 | symbol_attribute attr; |
c2958b6b | 7636 | gfc_symbol *sym, *gensym; |
ea94d76d | 7637 | gfc_symbol *extended; |
c5d33754 | 7638 | match m; |
7639 | match is_type_attr_spec = MATCH_NO; | |
33e86520 | 7640 | bool seen_attr = false; |
c2958b6b | 7641 | gfc_interface *intr = NULL, *head; |
c5d33754 | 7642 | |
7643 | if (gfc_current_state () == COMP_DERIVED) | |
7644 | return MATCH_NO; | |
7645 | ||
ea94d76d | 7646 | name[0] = '\0'; |
7647 | parent[0] = '\0'; | |
c5d33754 | 7648 | gfc_clear_attr (&attr); |
ea94d76d | 7649 | extended = NULL; |
c5d33754 | 7650 | |
7651 | do | |
7652 | { | |
ea94d76d | 7653 | is_type_attr_spec = gfc_get_type_attr_spec (&attr, parent); |
c5d33754 | 7654 | if (is_type_attr_spec == MATCH_ERROR) |
7655 | return MATCH_ERROR; | |
33e86520 | 7656 | if (is_type_attr_spec == MATCH_YES) |
7657 | seen_attr = true; | |
c5d33754 | 7658 | } while (is_type_attr_spec == MATCH_YES); |
4ee9c684 | 7659 | |
e485ad6b | 7660 | /* Deal with derived type extensions. The extension attribute has |
7661 | been added to 'attr' but now the parent type must be found and | |
7662 | checked. */ | |
ea94d76d | 7663 | if (parent[0]) |
7664 | extended = check_extended_derived_type (parent); | |
7665 | ||
7666 | if (parent[0] && !extended) | |
7667 | return MATCH_ERROR; | |
7668 | ||
33e86520 | 7669 | if (gfc_match (" ::") != MATCH_YES && seen_attr) |
4ee9c684 | 7670 | { |
7671 | gfc_error ("Expected :: in TYPE definition at %C"); | |
7672 | return MATCH_ERROR; | |
7673 | } | |
7674 | ||
7675 | m = gfc_match (" %n%t", name); | |
7676 | if (m != MATCH_YES) | |
7677 | return m; | |
7678 | ||
a3055431 | 7679 | /* Make sure the name is not the name of an intrinsic type. */ |
7680 | if (gfc_is_intrinsic_typename (name)) | |
4ee9c684 | 7681 | { |
1a9745d2 | 7682 | gfc_error ("Type name '%s' at %C cannot be the same as an intrinsic " |
7683 | "type", name); | |
4ee9c684 | 7684 | return MATCH_ERROR; |
7685 | } | |
7686 | ||
c2958b6b | 7687 | if (gfc_get_symbol (name, NULL, &gensym)) |
4ee9c684 | 7688 | return MATCH_ERROR; |
7689 | ||
c2958b6b | 7690 | if (!gensym->attr.generic && gensym->ts.type != BT_UNKNOWN) |
4ee9c684 | 7691 | { |
7692 | gfc_error ("Derived type name '%s' at %C already has a basic type " | |
c2958b6b | 7693 | "of %s", gensym->name, gfc_typename (&gensym->ts)); |
7694 | return MATCH_ERROR; | |
7695 | } | |
7696 | ||
7697 | if (!gensym->attr.generic | |
60e19868 | 7698 | && !gfc_add_generic (&gensym->attr, gensym->name, NULL)) |
c2958b6b | 7699 | return MATCH_ERROR; |
7700 | ||
7701 | if (!gensym->attr.function | |
60e19868 | 7702 | && !gfc_add_function (&gensym->attr, gensym->name, NULL)) |
c2958b6b | 7703 | return MATCH_ERROR; |
7704 | ||
7705 | sym = gfc_find_dt_in_generic (gensym); | |
7706 | ||
7707 | if (sym && (sym->components != NULL || sym->attr.zero_comp)) | |
7708 | { | |
7709 | gfc_error ("Derived type definition of '%s' at %C has already been " | |
7710 | "defined", sym->name); | |
4ee9c684 | 7711 | return MATCH_ERROR; |
7712 | } | |
7713 | ||
c2958b6b | 7714 | if (!sym) |
7715 | { | |
7716 | /* Use upper case to save the actual derived-type symbol. */ | |
7717 | gfc_get_symbol (gfc_get_string ("%c%s", | |
7718 | (char) TOUPPER ((unsigned char) gensym->name[0]), | |
7719 | &gensym->name[1]), NULL, &sym); | |
7720 | sym->name = gfc_get_string (gensym->name); | |
7721 | head = gensym->generic; | |
7722 | intr = gfc_get_interface (); | |
7723 | intr->sym = sym; | |
7724 | intr->where = gfc_current_locus; | |
7725 | intr->sym->declared_at = gfc_current_locus; | |
7726 | intr->next = head; | |
7727 | gensym->generic = intr; | |
7728 | gensym->attr.if_source = IFSRC_DECL; | |
7729 | } | |
7730 | ||
4ee9c684 | 7731 | /* The symbol may already have the derived attribute without the |
7732 | components. The ways this can happen is via a function | |
7733 | definition, an INTRINSIC statement or a subtype in another | |
7734 | derived type that is a pointer. The first part of the AND clause | |
69b1505f | 7735 | is true if the symbol is not the return value of a function. */ |
4ee9c684 | 7736 | if (sym->attr.flavor != FL_DERIVED |
60e19868 | 7737 | && !gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL)) |
4ee9c684 | 7738 | return MATCH_ERROR; |
7739 | ||
4ee9c684 | 7740 | if (attr.access != ACCESS_UNKNOWN |
60e19868 | 7741 | && !gfc_add_access (&sym->attr, attr.access, sym->name, NULL)) |
4ee9c684 | 7742 | return MATCH_ERROR; |
c2958b6b | 7743 | else if (sym->attr.access == ACCESS_UNKNOWN |
7744 | && gensym->attr.access != ACCESS_UNKNOWN | |
60e19868 | 7745 | && !gfc_add_access (&sym->attr, gensym->attr.access, |
7746 | sym->name, NULL)) | |
c2958b6b | 7747 | return MATCH_ERROR; |
7748 | ||
7749 | if (sym->attr.access != ACCESS_UNKNOWN | |
7750 | && gensym->attr.access == ACCESS_UNKNOWN) | |
7751 | gensym->attr.access = sym->attr.access; | |
4ee9c684 | 7752 | |
c5d33754 | 7753 | /* See if the derived type was labeled as bind(c). */ |
7754 | if (attr.is_bind_c != 0) | |
7755 | sym->attr.is_bind_c = attr.is_bind_c; | |
7756 | ||
223f0f57 | 7757 | /* Construct the f2k_derived namespace if it is not yet there. */ |
7758 | if (!sym->f2k_derived) | |
7759 | sym->f2k_derived = gfc_get_namespace (NULL, 0); | |
8db94b3b | 7760 | |
ea94d76d | 7761 | if (extended && !sym->components) |
7762 | { | |
7763 | gfc_component *p; | |
7764 | gfc_symtree *st; | |
7765 | ||
7766 | /* Add the extended derived type as the first component. */ | |
7767 | gfc_add_component (sym, parent, &p); | |
ea94d76d | 7768 | extended->refs++; |
7769 | gfc_set_sym_referenced (extended); | |
7770 | ||
7771 | p->ts.type = BT_DERIVED; | |
eeebe20b | 7772 | p->ts.u.derived = extended; |
ea94d76d | 7773 | p->initializer = gfc_default_initializer (&p->ts); |
8db94b3b | 7774 | |
bdfbc762 | 7775 | /* Set extension level. */ |
7776 | if (extended->attr.extension == 255) | |
7777 | { | |
7778 | /* Since the extension field is 8 bit wide, we can only have | |
7779 | up to 255 extension levels. */ | |
7780 | gfc_error ("Maximum extension level reached with type '%s' at %L", | |
7781 | extended->name, &extended->declared_at); | |
7782 | return MATCH_ERROR; | |
7783 | } | |
7784 | sym->attr.extension = extended->attr.extension + 1; | |
ea94d76d | 7785 | |
7786 | /* Provide the links between the extended type and its extension. */ | |
7787 | if (!extended->f2k_derived) | |
7788 | extended->f2k_derived = gfc_get_namespace (NULL, 0); | |
7789 | st = gfc_new_symtree (&extended->f2k_derived->sym_root, sym->name); | |
7790 | st->n.sym = sym; | |
7791 | } | |
7792 | ||
bdfbc762 | 7793 | if (!sym->hash_value) |
7794 | /* Set the hash for the compound name for this type. */ | |
a656e7c2 | 7795 | sym->hash_value = gfc_hash_value (sym); |
1de1b1a9 | 7796 | |
ac5f2650 | 7797 | /* Take over the ABSTRACT attribute. */ |
7798 | sym->attr.abstract = attr.abstract; | |
7799 | ||
4ee9c684 | 7800 | gfc_new_block = sym; |
7801 | ||
7802 | return MATCH_YES; | |
7803 | } | |
b549d2a5 | 7804 | |
7805 | ||
8db94b3b | 7806 | /* Cray Pointees can be declared as: |
452695a8 | 7807 | pointer (ipt, a (n,m,...,*)) */ |
b549d2a5 | 7808 | |
8458f4ca | 7809 | match |
b549d2a5 | 7810 | gfc_mod_pointee_as (gfc_array_spec *as) |
7811 | { | |
7812 | as->cray_pointee = true; /* This will be useful to know later. */ | |
7813 | if (as->type == AS_ASSUMED_SIZE) | |
452695a8 | 7814 | as->cp_was_assumed = true; |
b549d2a5 | 7815 | else if (as->type == AS_ASSUMED_SHAPE) |
7816 | { | |
7817 | gfc_error ("Cray Pointee at %C cannot be assumed shape array"); | |
7818 | return MATCH_ERROR; | |
7819 | } | |
7820 | return MATCH_YES; | |
7821 | } | |
3b6a4b41 | 7822 | |
7823 | ||
8db94b3b | 7824 | /* Match the enum definition statement, here we are trying to match |
7825 | the first line of enum definition statement. | |
3b6a4b41 | 7826 | Returns MATCH_YES if match is found. */ |
7827 | ||
7828 | match | |
7829 | gfc_match_enum (void) | |
7830 | { | |
7831 | match m; | |
8db94b3b | 7832 | |
3b6a4b41 | 7833 | m = gfc_match_eos (); |
7834 | if (m != MATCH_YES) | |
7835 | return m; | |
7836 | ||
60e19868 | 7837 | if (!gfc_notify_std (GFC_STD_F2003, "ENUM and ENUMERATOR at %C")) |
3b6a4b41 | 7838 | return MATCH_ERROR; |
7839 | ||
7840 | return MATCH_YES; | |
7841 | } | |
7842 | ||
7843 | ||
fe1328da | 7844 | /* Returns an initializer whose value is one higher than the value of the |
7845 | LAST_INITIALIZER argument. If the argument is NULL, the | |
7846 | initializers value will be set to zero. The initializer's kind | |
7847 | will be set to gfc_c_int_kind. | |
7848 | ||
7849 | If -fshort-enums is given, the appropriate kind will be selected | |
7850 | later after all enumerators have been parsed. A warning is issued | |
7851 | here if an initializer exceeds gfc_c_int_kind. */ | |
7852 | ||
7853 | static gfc_expr * | |
7854 | enum_initializer (gfc_expr *last_initializer, locus where) | |
7855 | { | |
7856 | gfc_expr *result; | |
126387b5 | 7857 | result = gfc_get_constant_expr (BT_INTEGER, gfc_c_int_kind, &where); |
fe1328da | 7858 | |
7859 | mpz_init (result->value.integer); | |
7860 | ||
7861 | if (last_initializer != NULL) | |
7862 | { | |
7863 | mpz_add_ui (result->value.integer, last_initializer->value.integer, 1); | |
7864 | result->where = last_initializer->where; | |
7865 | ||
7866 | if (gfc_check_integer_range (result->value.integer, | |
7867 | gfc_c_int_kind) != ARITH_OK) | |
7868 | { | |
7869 | gfc_error ("Enumerator exceeds the C integer type at %C"); | |
7870 | return NULL; | |
7871 | } | |
7872 | } | |
7873 | else | |
7874 | { | |
7875 | /* Control comes here, if it's the very first enumerator and no | |
7876 | initializer has been given. It will be initialized to zero. */ | |
7877 | mpz_set_si (result->value.integer, 0); | |
7878 | } | |
7879 | ||
7880 | return result; | |
7881 | } | |
7882 | ||
7883 | ||
60fbbf9e | 7884 | /* Match a variable name with an optional initializer. When this |
7885 | subroutine is called, a variable is expected to be parsed next. | |
7886 | Depending on what is happening at the moment, updates either the | |
7887 | symbol table or the current interface. */ | |
7888 | ||
7889 | static match | |
7890 | enumerator_decl (void) | |
7891 | { | |
7892 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7893 | gfc_expr *initializer; | |
7894 | gfc_array_spec *as = NULL; | |
7895 | gfc_symbol *sym; | |
7896 | locus var_locus; | |
7897 | match m; | |
60e19868 | 7898 | bool t; |
60fbbf9e | 7899 | locus old_locus; |
7900 | ||
7901 | initializer = NULL; | |
7902 | old_locus = gfc_current_locus; | |
7903 | ||
7904 | /* When we get here, we've just matched a list of attributes and | |
7905 | maybe a type and a double colon. The next thing we expect to see | |
7906 | is the name of the symbol. */ | |
7907 | m = gfc_match_name (name); | |
7908 | if (m != MATCH_YES) | |
7909 | goto cleanup; | |
7910 | ||
7911 | var_locus = gfc_current_locus; | |
7912 | ||
7913 | /* OK, we've successfully matched the declaration. Now put the | |
7914 | symbol in the current namespace. If we fail to create the symbol, | |
7915 | bail out. */ | |
60e19868 | 7916 | if (!build_sym (name, NULL, false, &as, &var_locus)) |
60fbbf9e | 7917 | { |
7918 | m = MATCH_ERROR; | |
7919 | goto cleanup; | |
7920 | } | |
7921 | ||
7922 | /* The double colon must be present in order to have initializers. | |
7923 | Otherwise the statement is ambiguous with an assignment statement. */ | |
7924 | if (colon_seen) | |
7925 | { | |
7926 | if (gfc_match_char ('=') == MATCH_YES) | |
7927 | { | |
7928 | m = gfc_match_init_expr (&initializer); | |
7929 | if (m == MATCH_NO) | |
7930 | { | |
7931 | gfc_error ("Expected an initialization expression at %C"); | |
7932 | m = MATCH_ERROR; | |
7933 | } | |
7934 | ||
7935 | if (m != MATCH_YES) | |
7936 | goto cleanup; | |
7937 | } | |
7938 | } | |
7939 | ||
7940 | /* If we do not have an initializer, the initialization value of the | |
7941 | previous enumerator (stored in last_initializer) is incremented | |
7942 | by 1 and is used to initialize the current enumerator. */ | |
7943 | if (initializer == NULL) | |
fe1328da | 7944 | initializer = enum_initializer (last_initializer, old_locus); |
e14bee04 | 7945 | |
60fbbf9e | 7946 | if (initializer == NULL || initializer->ts.type != BT_INTEGER) |
7947 | { | |
a8beb4f8 | 7948 | gfc_error ("ENUMERATOR %L not initialized with integer expression", |
7949 | &var_locus); | |
e14bee04 | 7950 | m = MATCH_ERROR; |
60fbbf9e | 7951 | goto cleanup; |
7952 | } | |
7953 | ||
7954 | /* Store this current initializer, for the next enumerator variable | |
7955 | to be parsed. add_init_expr_to_sym() zeros initializer, so we | |
7956 | use last_initializer below. */ | |
7957 | last_initializer = initializer; | |
7958 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
7959 | ||
7960 | /* Maintain enumerator history. */ | |
7961 | gfc_find_symbol (name, NULL, 0, &sym); | |
7962 | create_enum_history (sym, last_initializer); | |
7963 | ||
60e19868 | 7964 | return (t) ? MATCH_YES : MATCH_ERROR; |
60fbbf9e | 7965 | |
7966 | cleanup: | |
7967 | /* Free stuff up and return. */ | |
7968 | gfc_free_expr (initializer); | |
7969 | ||
7970 | return m; | |
7971 | } | |
7972 | ||
7973 | ||
f6d0e37a | 7974 | /* Match the enumerator definition statement. */ |
3b6a4b41 | 7975 | |
7976 | match | |
7977 | gfc_match_enumerator_def (void) | |
7978 | { | |
7979 | match m; | |
60e19868 | 7980 | bool t; |
e14bee04 | 7981 | |
3b6a4b41 | 7982 | gfc_clear_ts (¤t_ts); |
e14bee04 | 7983 | |
3b6a4b41 | 7984 | m = gfc_match (" enumerator"); |
7985 | if (m != MATCH_YES) | |
7986 | return m; | |
60fbbf9e | 7987 | |
7988 | m = gfc_match (" :: "); | |
7989 | if (m == MATCH_ERROR) | |
7990 | return m; | |
7991 | ||
7992 | colon_seen = (m == MATCH_YES); | |
e14bee04 | 7993 | |
3b6a4b41 | 7994 | if (gfc_current_state () != COMP_ENUM) |
7995 | { | |
7996 | gfc_error ("ENUM definition statement expected before %C"); | |
7997 | gfc_free_enum_history (); | |
7998 | return MATCH_ERROR; | |
7999 | } | |
8000 | ||
8001 | (¤t_ts)->type = BT_INTEGER; | |
8002 | (¤t_ts)->kind = gfc_c_int_kind; | |
e14bee04 | 8003 | |
60fbbf9e | 8004 | gfc_clear_attr (¤t_attr); |
8005 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, NULL); | |
60e19868 | 8006 | if (!t) |
3b6a4b41 | 8007 | { |
60fbbf9e | 8008 | m = MATCH_ERROR; |
3b6a4b41 | 8009 | goto cleanup; |
8010 | } | |
8011 | ||
3b6a4b41 | 8012 | for (;;) |
8013 | { | |
60fbbf9e | 8014 | m = enumerator_decl (); |
3b6a4b41 | 8015 | if (m == MATCH_ERROR) |
a8beb4f8 | 8016 | { |
8017 | gfc_free_enum_history (); | |
8018 | goto cleanup; | |
8019 | } | |
3b6a4b41 | 8020 | if (m == MATCH_NO) |
8021 | break; | |
8022 | ||
8023 | if (gfc_match_eos () == MATCH_YES) | |
8024 | goto cleanup; | |
8025 | if (gfc_match_char (',') != MATCH_YES) | |
8026 | break; | |
8027 | } | |
8028 | ||
8029 | if (gfc_current_state () == COMP_ENUM) | |
8030 | { | |
8031 | gfc_free_enum_history (); | |
8032 | gfc_error ("Syntax error in ENUMERATOR definition at %C"); | |
8033 | m = MATCH_ERROR; | |
8034 | } | |
8035 | ||
8036 | cleanup: | |
8037 | gfc_free_array_spec (current_as); | |
8038 | current_as = NULL; | |
8039 | return m; | |
8040 | ||
8041 | } | |
8042 | ||
e449e4dd | 8043 | |
7fd88f6e | 8044 | /* Match binding attributes. */ |
8045 | ||
8046 | static match | |
64e93293 | 8047 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc) |
7fd88f6e | 8048 | { |
8049 | bool found_passing = false; | |
64e93293 | 8050 | bool seen_ptr = false; |
fe9b08a2 | 8051 | match m = MATCH_YES; |
7fd88f6e | 8052 | |
df084314 | 8053 | /* Initialize to defaults. Do so even before the MATCH_NO check so that in |
7fd88f6e | 8054 | this case the defaults are in there. */ |
8055 | ba->access = ACCESS_UNKNOWN; | |
8056 | ba->pass_arg = NULL; | |
8057 | ba->pass_arg_num = 0; | |
8058 | ba->nopass = 0; | |
8059 | ba->non_overridable = 0; | |
61c3b81d | 8060 | ba->deferred = 0; |
fe9b08a2 | 8061 | ba->ppc = ppc; |
7fd88f6e | 8062 | |
8063 | /* If we find a comma, we believe there are binding attributes. */ | |
fe9b08a2 | 8064 | m = gfc_match_char (','); |
8065 | if (m == MATCH_NO) | |
8066 | goto done; | |
7fd88f6e | 8067 | |
8068 | do | |
8069 | { | |
e2f06a48 | 8070 | /* Access specifier. */ |
8071 | ||
8072 | m = gfc_match (" public"); | |
7fd88f6e | 8073 | if (m == MATCH_ERROR) |
8074 | goto error; | |
8075 | if (m == MATCH_YES) | |
8076 | { | |
e2f06a48 | 8077 | if (ba->access != ACCESS_UNKNOWN) |
7fd88f6e | 8078 | { |
e2f06a48 | 8079 | gfc_error ("Duplicate access-specifier at %C"); |
7fd88f6e | 8080 | goto error; |
8081 | } | |
8082 | ||
e2f06a48 | 8083 | ba->access = ACCESS_PUBLIC; |
7fd88f6e | 8084 | continue; |
8085 | } | |
8086 | ||
e2f06a48 | 8087 | m = gfc_match (" private"); |
7fd88f6e | 8088 | if (m == MATCH_ERROR) |
8089 | goto error; | |
8090 | if (m == MATCH_YES) | |
8091 | { | |
e2f06a48 | 8092 | if (ba->access != ACCESS_UNKNOWN) |
7fd88f6e | 8093 | { |
e2f06a48 | 8094 | gfc_error ("Duplicate access-specifier at %C"); |
7fd88f6e | 8095 | goto error; |
8096 | } | |
8097 | ||
e2f06a48 | 8098 | ba->access = ACCESS_PRIVATE; |
7fd88f6e | 8099 | continue; |
8100 | } | |
8101 | ||
e2f06a48 | 8102 | /* If inside GENERIC, the following is not allowed. */ |
8103 | if (!generic) | |
7fd88f6e | 8104 | { |
7fd88f6e | 8105 | |
e2f06a48 | 8106 | /* NOPASS flag. */ |
8107 | m = gfc_match (" nopass"); | |
8108 | if (m == MATCH_ERROR) | |
8109 | goto error; | |
8110 | if (m == MATCH_YES) | |
7fd88f6e | 8111 | { |
e2f06a48 | 8112 | if (found_passing) |
8113 | { | |
8114 | gfc_error ("Binding attributes already specify passing," | |
8115 | " illegal NOPASS at %C"); | |
8116 | goto error; | |
8117 | } | |
8118 | ||
8119 | found_passing = true; | |
8120 | ba->nopass = 1; | |
8121 | continue; | |
7fd88f6e | 8122 | } |
8123 | ||
e2f06a48 | 8124 | /* PASS possibly including argument. */ |
8125 | m = gfc_match (" pass"); | |
8126 | if (m == MATCH_ERROR) | |
8127 | goto error; | |
8128 | if (m == MATCH_YES) | |
7fd88f6e | 8129 | { |
e2f06a48 | 8130 | char arg[GFC_MAX_SYMBOL_LEN + 1]; |
8131 | ||
8132 | if (found_passing) | |
8133 | { | |
8134 | gfc_error ("Binding attributes already specify passing," | |
8135 | " illegal PASS at %C"); | |
8136 | goto error; | |
8137 | } | |
8138 | ||
8139 | m = gfc_match (" ( %n )", arg); | |
8140 | if (m == MATCH_ERROR) | |
8141 | goto error; | |
8142 | if (m == MATCH_YES) | |
fe9b08a2 | 8143 | ba->pass_arg = gfc_get_string (arg); |
e2f06a48 | 8144 | gcc_assert ((m == MATCH_YES) == (ba->pass_arg != NULL)); |
8145 | ||
8146 | found_passing = true; | |
8147 | ba->nopass = 0; | |
8148 | continue; | |
7fd88f6e | 8149 | } |
8150 | ||
64e93293 | 8151 | if (ppc) |
8152 | { | |
8153 | /* POINTER flag. */ | |
8154 | m = gfc_match (" pointer"); | |
8155 | if (m == MATCH_ERROR) | |
8156 | goto error; | |
8157 | if (m == MATCH_YES) | |
8158 | { | |
8159 | if (seen_ptr) | |
8160 | { | |
8161 | gfc_error ("Duplicate POINTER attribute at %C"); | |
8162 | goto error; | |
8163 | } | |
8164 | ||
8165 | seen_ptr = true; | |
64e93293 | 8166 | continue; |
8167 | } | |
8168 | } | |
8169 | else | |
8170 | { | |
8171 | /* NON_OVERRIDABLE flag. */ | |
8172 | m = gfc_match (" non_overridable"); | |
8173 | if (m == MATCH_ERROR) | |
8174 | goto error; | |
8175 | if (m == MATCH_YES) | |
8176 | { | |
8177 | if (ba->non_overridable) | |
8178 | { | |
8179 | gfc_error ("Duplicate NON_OVERRIDABLE at %C"); | |
8180 | goto error; | |
8181 | } | |
8182 | ||
8183 | ba->non_overridable = 1; | |
8184 | continue; | |
8185 | } | |
8186 | ||
8187 | /* DEFERRED flag. */ | |
8188 | m = gfc_match (" deferred"); | |
8189 | if (m == MATCH_ERROR) | |
8190 | goto error; | |
8191 | if (m == MATCH_YES) | |
8192 | { | |
8193 | if (ba->deferred) | |
8194 | { | |
8195 | gfc_error ("Duplicate DEFERRED at %C"); | |
8196 | goto error; | |
8197 | } | |
8198 | ||
8199 | ba->deferred = 1; | |
8200 | continue; | |
8201 | } | |
8202 | } | |
8203 | ||
7fd88f6e | 8204 | } |
8205 | ||
8206 | /* Nothing matching found. */ | |
e2f06a48 | 8207 | if (generic) |
8208 | gfc_error ("Expected access-specifier at %C"); | |
8209 | else | |
8210 | gfc_error ("Expected binding attribute at %C"); | |
7fd88f6e | 8211 | goto error; |
8212 | } | |
8213 | while (gfc_match_char (',') == MATCH_YES); | |
8214 | ||
61c3b81d | 8215 | /* NON_OVERRIDABLE and DEFERRED exclude themselves. */ |
8216 | if (ba->non_overridable && ba->deferred) | |
8217 | { | |
8218 | gfc_error ("NON_OVERRIDABLE and DEFERRED can't both appear at %C"); | |
8219 | goto error; | |
8220 | } | |
8221 | ||
fe9b08a2 | 8222 | m = MATCH_YES; |
8223 | ||
8224 | done: | |
e2f06a48 | 8225 | if (ba->access == ACCESS_UNKNOWN) |
8226 | ba->access = gfc_typebound_default_access; | |
8227 | ||
64e93293 | 8228 | if (ppc && !seen_ptr) |
8229 | { | |
8230 | gfc_error ("POINTER attribute is required for procedure pointer component" | |
8231 | " at %C"); | |
8232 | goto error; | |
8233 | } | |
8234 | ||
fe9b08a2 | 8235 | return m; |
7fd88f6e | 8236 | |
8237 | error: | |
7fd88f6e | 8238 | return MATCH_ERROR; |
8239 | } | |
8240 | ||
8241 | ||
8242 | /* Match a PROCEDURE specific binding inside a derived type. */ | |
8243 | ||
8244 | static match | |
8245 | match_procedure_in_type (void) | |
8246 | { | |
8247 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8248 | char target_buf[GFC_MAX_SYMBOL_LEN + 1]; | |
7a3aaef8 | 8249 | char* target = NULL, *ifc = NULL; |
4a12b9ba | 8250 | gfc_typebound_proc tb; |
7fd88f6e | 8251 | bool seen_colons; |
8252 | bool seen_attrs; | |
8253 | match m; | |
8254 | gfc_symtree* stree; | |
8255 | gfc_namespace* ns; | |
8256 | gfc_symbol* block; | |
7a3aaef8 | 8257 | int num; |
7fd88f6e | 8258 | |
8259 | /* Check current state. */ | |
8260 | gcc_assert (gfc_state_stack->state == COMP_DERIVED_CONTAINS); | |
8261 | block = gfc_state_stack->previous->sym; | |
8262 | gcc_assert (block); | |
8263 | ||
61c3b81d | 8264 | /* Try to match PROCEDURE(interface). */ |
7fd88f6e | 8265 | if (gfc_match (" (") == MATCH_YES) |
8266 | { | |
61c3b81d | 8267 | m = gfc_match_name (target_buf); |
8268 | if (m == MATCH_ERROR) | |
8269 | return m; | |
8270 | if (m != MATCH_YES) | |
8271 | { | |
8272 | gfc_error ("Interface-name expected after '(' at %C"); | |
8273 | return MATCH_ERROR; | |
8274 | } | |
8275 | ||
8276 | if (gfc_match (" )") != MATCH_YES) | |
8277 | { | |
8278 | gfc_error ("')' expected at %C"); | |
8279 | return MATCH_ERROR; | |
8280 | } | |
8281 | ||
7a3aaef8 | 8282 | ifc = target_buf; |
7fd88f6e | 8283 | } |
8284 | ||
8285 | /* Construct the data structure. */ | |
b3d1387f | 8286 | memset (&tb, 0, sizeof (tb)); |
4a12b9ba | 8287 | tb.where = gfc_current_locus; |
7fd88f6e | 8288 | |
8289 | /* Match binding attributes. */ | |
4a12b9ba | 8290 | m = match_binding_attributes (&tb, false, false); |
7fd88f6e | 8291 | if (m == MATCH_ERROR) |
8292 | return m; | |
8293 | seen_attrs = (m == MATCH_YES); | |
8294 | ||
7a3aaef8 | 8295 | /* Check that attribute DEFERRED is given if an interface is specified. */ |
4a12b9ba | 8296 | if (tb.deferred && !ifc) |
61c3b81d | 8297 | { |
8298 | gfc_error ("Interface must be specified for DEFERRED binding at %C"); | |
8299 | return MATCH_ERROR; | |
8300 | } | |
4a12b9ba | 8301 | if (ifc && !tb.deferred) |
61c3b81d | 8302 | { |
8303 | gfc_error ("PROCEDURE(interface) at %C should be declared DEFERRED"); | |
8304 | return MATCH_ERROR; | |
8305 | } | |
8306 | ||
7fd88f6e | 8307 | /* Match the colons. */ |
8308 | m = gfc_match (" ::"); | |
8309 | if (m == MATCH_ERROR) | |
8310 | return m; | |
8311 | seen_colons = (m == MATCH_YES); | |
8312 | if (seen_attrs && !seen_colons) | |
8313 | { | |
8314 | gfc_error ("Expected '::' after binding-attributes at %C"); | |
8315 | return MATCH_ERROR; | |
8316 | } | |
8317 | ||
8db94b3b | 8318 | /* Match the binding names. */ |
7a3aaef8 | 8319 | for(num=1;;num++) |
7fd88f6e | 8320 | { |
7a3aaef8 | 8321 | m = gfc_match_name (name); |
8322 | if (m == MATCH_ERROR) | |
8323 | return m; | |
8324 | if (m == MATCH_NO) | |
61c3b81d | 8325 | { |
7a3aaef8 | 8326 | gfc_error ("Expected binding name at %C"); |
61c3b81d | 8327 | return MATCH_ERROR; |
8328 | } | |
8329 | ||
60e19868 | 8330 | if (num>1 && !gfc_notify_std (GFC_STD_F2008, "PROCEDURE list at %C")) |
7a3aaef8 | 8331 | return MATCH_ERROR; |
7fd88f6e | 8332 | |
7a3aaef8 | 8333 | /* Try to match the '=> target', if it's there. */ |
8334 | target = ifc; | |
8335 | m = gfc_match (" =>"); | |
7fd88f6e | 8336 | if (m == MATCH_ERROR) |
8337 | return m; | |
7a3aaef8 | 8338 | if (m == MATCH_YES) |
7fd88f6e | 8339 | { |
4a12b9ba | 8340 | if (tb.deferred) |
7a3aaef8 | 8341 | { |
8342 | gfc_error ("'=> target' is invalid for DEFERRED binding at %C"); | |
8343 | return MATCH_ERROR; | |
8344 | } | |
8345 | ||
8346 | if (!seen_colons) | |
8347 | { | |
8348 | gfc_error ("'::' needed in PROCEDURE binding with explicit target" | |
8349 | " at %C"); | |
8350 | return MATCH_ERROR; | |
8351 | } | |
8352 | ||
8353 | m = gfc_match_name (target_buf); | |
8354 | if (m == MATCH_ERROR) | |
8355 | return m; | |
8356 | if (m == MATCH_NO) | |
8357 | { | |
8358 | gfc_error ("Expected binding target after '=>' at %C"); | |
8359 | return MATCH_ERROR; | |
8360 | } | |
8361 | target = target_buf; | |
7fd88f6e | 8362 | } |
7fd88f6e | 8363 | |
7a3aaef8 | 8364 | /* If no target was found, it has the same name as the binding. */ |
8365 | if (!target) | |
8366 | target = name; | |
7fd88f6e | 8367 | |
7a3aaef8 | 8368 | /* Get the namespace to insert the symbols into. */ |
8369 | ns = block->f2k_derived; | |
8370 | gcc_assert (ns); | |
7fd88f6e | 8371 | |
7a3aaef8 | 8372 | /* If the binding is DEFERRED, check that the containing type is ABSTRACT. */ |
4a12b9ba | 8373 | if (tb.deferred && !block->attr.abstract) |
7a3aaef8 | 8374 | { |
8375 | gfc_error ("Type '%s' containing DEFERRED binding at %C " | |
8376 | "is not ABSTRACT", block->name); | |
8377 | return MATCH_ERROR; | |
8378 | } | |
7fd88f6e | 8379 | |
7a3aaef8 | 8380 | /* See if we already have a binding with this name in the symtree which |
9834e1b6 | 8381 | would be an error. If a GENERIC already targeted this binding, it may |
7a3aaef8 | 8382 | be already there but then typebound is still NULL. */ |
8383 | stree = gfc_find_symtree (ns->tb_sym_root, name); | |
e204cb62 | 8384 | if (stree && stree->n.tb) |
7a3aaef8 | 8385 | { |
8386 | gfc_error ("There is already a procedure with binding name '%s' for " | |
8387 | "the derived type '%s' at %C", name, block->name); | |
8388 | return MATCH_ERROR; | |
8389 | } | |
61c3b81d | 8390 | |
7a3aaef8 | 8391 | /* Insert it and set attributes. */ |
7fd88f6e | 8392 | |
e204cb62 | 8393 | if (!stree) |
8394 | { | |
8395 | stree = gfc_new_symtree (&ns->tb_sym_root, name); | |
8396 | gcc_assert (stree); | |
8397 | } | |
4a12b9ba | 8398 | stree->n.tb = gfc_get_typebound_proc (&tb); |
3323e9b1 | 8399 | |
4a12b9ba | 8400 | if (gfc_get_sym_tree (target, gfc_current_ns, &stree->n.tb->u.specific, |
8401 | false)) | |
7a3aaef8 | 8402 | return MATCH_ERROR; |
4a12b9ba | 8403 | gfc_set_sym_referenced (stree->n.tb->u.specific->n.sym); |
8db94b3b | 8404 | |
7a3aaef8 | 8405 | if (gfc_match_eos () == MATCH_YES) |
8406 | return MATCH_YES; | |
8407 | if (gfc_match_char (',') != MATCH_YES) | |
8408 | goto syntax; | |
3323e9b1 | 8409 | } |
7fd88f6e | 8410 | |
7a3aaef8 | 8411 | syntax: |
8412 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
8413 | return MATCH_ERROR; | |
7fd88f6e | 8414 | } |
8415 | ||
8416 | ||
e2f06a48 | 8417 | /* Match a GENERIC procedure binding inside a derived type. */ |
8418 | ||
8419 | match | |
8420 | gfc_match_generic (void) | |
8421 | { | |
8422 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
a36eb9ee | 8423 | char bind_name[GFC_MAX_SYMBOL_LEN + 16]; /* Allow space for OPERATOR(...). */ |
e2f06a48 | 8424 | gfc_symbol* block; |
8425 | gfc_typebound_proc tbattr; /* Used for match_binding_attributes. */ | |
8426 | gfc_typebound_proc* tb; | |
e2f06a48 | 8427 | gfc_namespace* ns; |
a36eb9ee | 8428 | interface_type op_type; |
8429 | gfc_intrinsic_op op; | |
e2f06a48 | 8430 | match m; |
8431 | ||
8432 | /* Check current state. */ | |
8433 | if (gfc_current_state () == COMP_DERIVED) | |
8434 | { | |
8435 | gfc_error ("GENERIC at %C must be inside a derived-type CONTAINS"); | |
8436 | return MATCH_ERROR; | |
8437 | } | |
8438 | if (gfc_current_state () != COMP_DERIVED_CONTAINS) | |
8439 | return MATCH_NO; | |
8440 | block = gfc_state_stack->previous->sym; | |
8441 | ns = block->f2k_derived; | |
8442 | gcc_assert (block && ns); | |
8443 | ||
b3d1387f | 8444 | memset (&tbattr, 0, sizeof (tbattr)); |
8445 | tbattr.where = gfc_current_locus; | |
8446 | ||
e2f06a48 | 8447 | /* See if we get an access-specifier. */ |
64e93293 | 8448 | m = match_binding_attributes (&tbattr, true, false); |
e2f06a48 | 8449 | if (m == MATCH_ERROR) |
8450 | goto error; | |
8451 | ||
8452 | /* Now the colons, those are required. */ | |
8453 | if (gfc_match (" ::") != MATCH_YES) | |
8454 | { | |
8455 | gfc_error ("Expected '::' at %C"); | |
8456 | goto error; | |
8457 | } | |
8458 | ||
a36eb9ee | 8459 | /* Match the binding name; depending on type (operator / generic) format |
8460 | it for future error messages into bind_name. */ | |
8db94b3b | 8461 | |
a36eb9ee | 8462 | m = gfc_match_generic_spec (&op_type, name, &op); |
e2f06a48 | 8463 | if (m == MATCH_ERROR) |
8464 | return MATCH_ERROR; | |
8465 | if (m == MATCH_NO) | |
8466 | { | |
a36eb9ee | 8467 | gfc_error ("Expected generic name or operator descriptor at %C"); |
e2f06a48 | 8468 | goto error; |
8469 | } | |
8470 | ||
a36eb9ee | 8471 | switch (op_type) |
e2f06a48 | 8472 | { |
a36eb9ee | 8473 | case INTERFACE_GENERIC: |
8474 | snprintf (bind_name, sizeof (bind_name), "%s", name); | |
8475 | break; | |
8db94b3b | 8476 | |
a36eb9ee | 8477 | case INTERFACE_USER_OP: |
8478 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(.%s.)", name); | |
8479 | break; | |
8db94b3b | 8480 | |
a36eb9ee | 8481 | case INTERFACE_INTRINSIC_OP: |
8482 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(%s)", | |
8483 | gfc_op2string (op)); | |
8484 | break; | |
8485 | ||
8486 | default: | |
8487 | gcc_unreachable (); | |
8488 | } | |
3323e9b1 | 8489 | |
a36eb9ee | 8490 | /* Match the required =>. */ |
8491 | if (gfc_match (" =>") != MATCH_YES) | |
8492 | { | |
8493 | gfc_error ("Expected '=>' at %C"); | |
8494 | goto error; | |
8495 | } | |
8db94b3b | 8496 | |
a36eb9ee | 8497 | /* Try to find existing GENERIC binding with this name / for this operator; |
8498 | if there is something, check that it is another GENERIC and then extend | |
8499 | it rather than building a new node. Otherwise, create it and put it | |
8500 | at the right position. */ | |
8501 | ||
8502 | switch (op_type) | |
8503 | { | |
8504 | case INTERFACE_USER_OP: | |
8505 | case INTERFACE_GENERIC: | |
8506 | { | |
8507 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
8508 | gfc_symtree* st; | |
8509 | ||
8510 | st = gfc_find_symtree (is_op ? ns->tb_uop_root : ns->tb_sym_root, name); | |
8511 | if (st) | |
8512 | { | |
8513 | tb = st->n.tb; | |
8514 | gcc_assert (tb); | |
8515 | } | |
8516 | else | |
8517 | tb = NULL; | |
8518 | ||
8519 | break; | |
8520 | } | |
8521 | ||
8522 | case INTERFACE_INTRINSIC_OP: | |
8523 | tb = ns->tb_op[op]; | |
8524 | break; | |
8525 | ||
8526 | default: | |
8527 | gcc_unreachable (); | |
8528 | } | |
8529 | ||
8530 | if (tb) | |
8531 | { | |
3323e9b1 | 8532 | if (!tb->is_generic) |
e2f06a48 | 8533 | { |
a36eb9ee | 8534 | gcc_assert (op_type == INTERFACE_GENERIC); |
e2f06a48 | 8535 | gfc_error ("There's already a non-generic procedure with binding name" |
8536 | " '%s' for the derived type '%s' at %C", | |
a36eb9ee | 8537 | bind_name, block->name); |
e2f06a48 | 8538 | goto error; |
8539 | } | |
8540 | ||
e2f06a48 | 8541 | if (tb->access != tbattr.access) |
8542 | { | |
8543 | gfc_error ("Binding at %C must have the same access as already" | |
a36eb9ee | 8544 | " defined binding '%s'", bind_name); |
e2f06a48 | 8545 | goto error; |
8546 | } | |
8547 | } | |
8548 | else | |
8549 | { | |
4a12b9ba | 8550 | tb = gfc_get_typebound_proc (NULL); |
e2f06a48 | 8551 | tb->where = gfc_current_locus; |
8552 | tb->access = tbattr.access; | |
8553 | tb->is_generic = 1; | |
8554 | tb->u.generic = NULL; | |
a36eb9ee | 8555 | |
8556 | switch (op_type) | |
8557 | { | |
8558 | case INTERFACE_GENERIC: | |
8559 | case INTERFACE_USER_OP: | |
8560 | { | |
8561 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
8562 | gfc_symtree* st; | |
8563 | ||
8564 | st = gfc_new_symtree (is_op ? &ns->tb_uop_root : &ns->tb_sym_root, | |
8565 | name); | |
8566 | gcc_assert (st); | |
8567 | st->n.tb = tb; | |
8568 | ||
8569 | break; | |
8570 | } | |
8db94b3b | 8571 | |
a36eb9ee | 8572 | case INTERFACE_INTRINSIC_OP: |
8573 | ns->tb_op[op] = tb; | |
8574 | break; | |
8575 | ||
8576 | default: | |
8577 | gcc_unreachable (); | |
8578 | } | |
e2f06a48 | 8579 | } |
8580 | ||
8581 | /* Now, match all following names as specific targets. */ | |
8582 | do | |
8583 | { | |
8584 | gfc_symtree* target_st; | |
8585 | gfc_tbp_generic* target; | |
8586 | ||
8587 | m = gfc_match_name (name); | |
8588 | if (m == MATCH_ERROR) | |
8589 | goto error; | |
8590 | if (m == MATCH_NO) | |
8591 | { | |
8592 | gfc_error ("Expected specific binding name at %C"); | |
8593 | goto error; | |
8594 | } | |
8595 | ||
3323e9b1 | 8596 | target_st = gfc_get_tbp_symtree (&ns->tb_sym_root, name); |
e2f06a48 | 8597 | |
8598 | /* See if this is a duplicate specification. */ | |
8599 | for (target = tb->u.generic; target; target = target->next) | |
8600 | if (target_st == target->specific_st) | |
8601 | { | |
8602 | gfc_error ("'%s' already defined as specific binding for the" | |
a36eb9ee | 8603 | " generic '%s' at %C", name, bind_name); |
e2f06a48 | 8604 | goto error; |
8605 | } | |
8606 | ||
e2f06a48 | 8607 | target = gfc_get_tbp_generic (); |
8608 | target->specific_st = target_st; | |
8609 | target->specific = NULL; | |
8610 | target->next = tb->u.generic; | |
5c0f7d99 | 8611 | target->is_operator = ((op_type == INTERFACE_USER_OP) |
8612 | || (op_type == INTERFACE_INTRINSIC_OP)); | |
e2f06a48 | 8613 | tb->u.generic = target; |
8614 | } | |
8615 | while (gfc_match (" ,") == MATCH_YES); | |
8616 | ||
8617 | /* Here should be the end. */ | |
8618 | if (gfc_match_eos () != MATCH_YES) | |
8619 | { | |
8620 | gfc_error ("Junk after GENERIC binding at %C"); | |
8621 | goto error; | |
8622 | } | |
8623 | ||
8624 | return MATCH_YES; | |
8625 | ||
8626 | error: | |
8627 | return MATCH_ERROR; | |
8628 | } | |
8629 | ||
8630 | ||
223f0f57 | 8631 | /* Match a FINAL declaration inside a derived type. */ |
8632 | ||
8633 | match | |
8634 | gfc_match_final_decl (void) | |
8635 | { | |
8636 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8637 | gfc_symbol* sym; | |
8638 | match m; | |
8639 | gfc_namespace* module_ns; | |
8640 | bool first, last; | |
7fd88f6e | 8641 | gfc_symbol* block; |
223f0f57 | 8642 | |
519651c1 | 8643 | if (gfc_current_form == FORM_FREE) |
8644 | { | |
8645 | char c = gfc_peek_ascii_char (); | |
8646 | if (!gfc_is_whitespace (c) && c != ':') | |
8647 | return MATCH_NO; | |
8648 | } | |
8db94b3b | 8649 | |
7fd88f6e | 8650 | if (gfc_state_stack->state != COMP_DERIVED_CONTAINS) |
223f0f57 | 8651 | { |
519651c1 | 8652 | if (gfc_current_form == FORM_FIXED) |
8653 | return MATCH_NO; | |
8654 | ||
223f0f57 | 8655 | gfc_error ("FINAL declaration at %C must be inside a derived type " |
7fd88f6e | 8656 | "CONTAINS section"); |
223f0f57 | 8657 | return MATCH_ERROR; |
8658 | } | |
8659 | ||
7fd88f6e | 8660 | block = gfc_state_stack->previous->sym; |
8661 | gcc_assert (block); | |
223f0f57 | 8662 | |
7fd88f6e | 8663 | if (!gfc_state_stack->previous || !gfc_state_stack->previous->previous |
8664 | || gfc_state_stack->previous->previous->state != COMP_MODULE) | |
223f0f57 | 8665 | { |
8666 | gfc_error ("Derived type declaration with FINAL at %C must be in the" | |
8667 | " specification part of a MODULE"); | |
8668 | return MATCH_ERROR; | |
8669 | } | |
8670 | ||
8671 | module_ns = gfc_current_ns; | |
8672 | gcc_assert (module_ns); | |
8673 | gcc_assert (module_ns->proc_name->attr.flavor == FL_MODULE); | |
8674 | ||
8675 | /* Match optional ::, don't care about MATCH_YES or MATCH_NO. */ | |
8676 | if (gfc_match (" ::") == MATCH_ERROR) | |
8677 | return MATCH_ERROR; | |
8678 | ||
8679 | /* Match the sequence of procedure names. */ | |
8680 | first = true; | |
8681 | last = false; | |
8682 | do | |
8683 | { | |
8684 | gfc_finalizer* f; | |
8685 | ||
8686 | if (first && gfc_match_eos () == MATCH_YES) | |
8687 | { | |
8688 | gfc_error ("Empty FINAL at %C"); | |
8689 | return MATCH_ERROR; | |
8690 | } | |
8691 | ||
8692 | m = gfc_match_name (name); | |
8693 | if (m == MATCH_NO) | |
8694 | { | |
8695 | gfc_error ("Expected module procedure name at %C"); | |
8696 | return MATCH_ERROR; | |
8697 | } | |
8698 | else if (m != MATCH_YES) | |
8699 | return MATCH_ERROR; | |
8700 | ||
8701 | if (gfc_match_eos () == MATCH_YES) | |
8702 | last = true; | |
8703 | if (!last && gfc_match_char (',') != MATCH_YES) | |
8704 | { | |
8705 | gfc_error ("Expected ',' at %C"); | |
8706 | return MATCH_ERROR; | |
8707 | } | |
8708 | ||
8709 | if (gfc_get_symbol (name, module_ns, &sym)) | |
8710 | { | |
8711 | gfc_error ("Unknown procedure name \"%s\" at %C", name); | |
8712 | return MATCH_ERROR; | |
8713 | } | |
8714 | ||
8715 | /* Mark the symbol as module procedure. */ | |
8716 | if (sym->attr.proc != PROC_MODULE | |
60e19868 | 8717 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
223f0f57 | 8718 | return MATCH_ERROR; |
8719 | ||
8720 | /* Check if we already have this symbol in the list, this is an error. */ | |
7fd88f6e | 8721 | for (f = block->f2k_derived->finalizers; f; f = f->next) |
e449e4dd | 8722 | if (f->proc_sym == sym) |
223f0f57 | 8723 | { |
8724 | gfc_error ("'%s' at %C is already defined as FINAL procedure!", | |
8725 | name); | |
8726 | return MATCH_ERROR; | |
8727 | } | |
8728 | ||
8729 | /* Add this symbol to the list of finalizers. */ | |
7fd88f6e | 8730 | gcc_assert (block->f2k_derived); |
223f0f57 | 8731 | ++sym->refs; |
48d8ad5a | 8732 | f = XCNEW (gfc_finalizer); |
e449e4dd | 8733 | f->proc_sym = sym; |
8734 | f->proc_tree = NULL; | |
223f0f57 | 8735 | f->where = gfc_current_locus; |
7fd88f6e | 8736 | f->next = block->f2k_derived->finalizers; |
8737 | block->f2k_derived->finalizers = f; | |
223f0f57 | 8738 | |
8739 | first = false; | |
8740 | } | |
8741 | while (!last); | |
8742 | ||
8743 | return MATCH_YES; | |
8744 | } | |
36b0a1b0 | 8745 | |
8746 | ||
8747 | const ext_attr_t ext_attr_list[] = { | |
fa76a552 | 8748 | { "dllimport", EXT_ATTR_DLLIMPORT, "dllimport" }, |
8749 | { "dllexport", EXT_ATTR_DLLEXPORT, "dllexport" }, | |
8750 | { "cdecl", EXT_ATTR_CDECL, "cdecl" }, | |
8751 | { "stdcall", EXT_ATTR_STDCALL, "stdcall" }, | |
8752 | { "fastcall", EXT_ATTR_FASTCALL, "fastcall" }, | |
8753 | { "no_arg_check", EXT_ATTR_NO_ARG_CHECK, NULL }, | |
8754 | { NULL, EXT_ATTR_LAST, NULL } | |
36b0a1b0 | 8755 | }; |
8756 | ||
8757 | /* Match a !GCC$ ATTRIBUTES statement of the form: | |
8758 | !GCC$ ATTRIBUTES attribute-list :: var-name [, var-name] ... | |
8759 | When we come here, we have already matched the !GCC$ ATTRIBUTES string. | |
8760 | ||
8761 | TODO: We should support all GCC attributes using the same syntax for | |
8762 | the attribute list, i.e. the list in C | |
8763 | __attributes(( attribute-list )) | |
8764 | matches then | |
8765 | !GCC$ ATTRIBUTES attribute-list :: | |
8766 | Cf. c-parser.c's c_parser_attributes; the data can then directly be | |
8767 | saved into a TREE. | |
8768 | ||
8769 | As there is absolutely no risk of confusion, we should never return | |
8770 | MATCH_NO. */ | |
8771 | match | |
8772 | gfc_match_gcc_attributes (void) | |
8db94b3b | 8773 | { |
36b0a1b0 | 8774 | symbol_attribute attr; |
8775 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8776 | unsigned id; | |
8777 | gfc_symbol *sym; | |
8778 | match m; | |
8779 | ||
8780 | gfc_clear_attr (&attr); | |
8781 | for(;;) | |
8782 | { | |
8783 | char ch; | |
8784 | ||
8785 | if (gfc_match_name (name) != MATCH_YES) | |
8786 | return MATCH_ERROR; | |
8787 | ||
8788 | for (id = 0; id < EXT_ATTR_LAST; id++) | |
8789 | if (strcmp (name, ext_attr_list[id].name) == 0) | |
8790 | break; | |
8791 | ||
8792 | if (id == EXT_ATTR_LAST) | |
8793 | { | |
8794 | gfc_error ("Unknown attribute in !GCC$ ATTRIBUTES statement at %C"); | |
8795 | return MATCH_ERROR; | |
8796 | } | |
8797 | ||
60e19868 | 8798 | if (!gfc_add_ext_attribute (&attr, (ext_attr_id_t)id, &gfc_current_locus)) |
36b0a1b0 | 8799 | return MATCH_ERROR; |
8800 | ||
8801 | gfc_gobble_whitespace (); | |
8802 | ch = gfc_next_ascii_char (); | |
8803 | if (ch == ':') | |
8804 | { | |
8805 | /* This is the successful exit condition for the loop. */ | |
8806 | if (gfc_next_ascii_char () == ':') | |
8807 | break; | |
8808 | } | |
8809 | ||
8810 | if (ch == ',') | |
8811 | continue; | |
8812 | ||
8813 | goto syntax; | |
8814 | } | |
8815 | ||
8816 | if (gfc_match_eos () == MATCH_YES) | |
8817 | goto syntax; | |
8818 | ||
8819 | for(;;) | |
8820 | { | |
8821 | m = gfc_match_name (name); | |
8822 | if (m != MATCH_YES) | |
8823 | return m; | |
8824 | ||
8825 | if (find_special (name, &sym, true)) | |
8826 | return MATCH_ERROR; | |
8db94b3b | 8827 | |
36b0a1b0 | 8828 | sym->attr.ext_attr |= attr.ext_attr; |
8829 | ||
8830 | if (gfc_match_eos () == MATCH_YES) | |
8831 | break; | |
8832 | ||
8833 | if (gfc_match_char (',') != MATCH_YES) | |
8834 | goto syntax; | |
8835 | } | |
8836 | ||
8837 | return MATCH_YES; | |
8838 | ||
8839 | syntax: | |
8840 | gfc_error ("Syntax error in !GCC$ ATTRIBUTES statement at %C"); | |
8841 | return MATCH_ERROR; | |
8842 | } |