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4ee9c684 | 1 | /* Declaration statement matcher |
2d76519f | 2 | Copyright (C) 2002, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 |
1a9745d2 | 3 | Free Software Foundation, Inc. |
4ee9c684 | 4 | Contributed by Andy Vaught |
5 | ||
c84b470d | 6 | This file is part of GCC. |
4ee9c684 | 7 | |
c84b470d | 8 | GCC is free software; you can redistribute it and/or modify it under |
9 | the terms of the GNU General Public License as published by the Free | |
bdabe786 | 10 | Software Foundation; either version 3, or (at your option) any later |
c84b470d | 11 | version. |
4ee9c684 | 12 | |
c84b470d | 13 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | for more details. | |
4ee9c684 | 17 | |
18 | You should have received a copy of the GNU General Public License | |
bdabe786 | 19 | along with GCC; see the file COPYING3. If not see |
20 | <http://www.gnu.org/licenses/>. */ | |
4ee9c684 | 21 | |
4ee9c684 | 22 | #include "config.h" |
7436502b | 23 | #include "system.h" |
e4d6c7fc | 24 | #include "coretypes.h" |
4ee9c684 | 25 | #include "gfortran.h" |
26 | #include "match.h" | |
27 | #include "parse.h" | |
6f092e31 | 28 | #include "flags.h" |
126387b5 | 29 | #include "constructor.h" |
7b2060ba | 30 | #include "tree.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 | ||
1d8a57d8 | 39 | static gfc_try 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. */ |
258 | if (gfc_check_symbol_typed (sym, gfc_current_ns, | |
259 | false, gfc_current_locus) == FAILURE) | |
260 | return MATCH_ERROR; | |
261 | ||
1a9745d2 | 262 | if (!sym->attr.function && gfc_current_ns->parent |
263 | && gfc_current_ns->parent == sym->ns) | |
b4f45d02 | 264 | { |
c8df3e9c | 265 | gfc_error ("Host associated variable '%s' may not be in the DATA " |
7698a624 | 266 | "statement at %C", sym->name); |
b4f45d02 | 267 | return MATCH_ERROR; |
268 | } | |
269 | ||
c8df3e9c | 270 | if (gfc_current_state () != COMP_BLOCK_DATA |
1a9745d2 | 271 | && sym->attr.in_common |
f25dbbf7 | 272 | && gfc_notify_std (GFC_STD_GNU, "initialization of " |
1a9745d2 | 273 | "common block variable '%s' in DATA statement at %C", |
274 | sym->name) == FAILURE) | |
c8df3e9c | 275 | return MATCH_ERROR; |
b4f45d02 | 276 | |
c1977dbe | 277 | if (gfc_add_data (&sym->attr, sym->name, &new_var->expr->where) == FAILURE) |
b4f45d02 | 278 | return MATCH_ERROR; |
279 | ||
280 | return MATCH_YES; | |
281 | } | |
282 | ||
283 | ||
284 | /* Match the top-level list of data variables. */ | |
285 | ||
286 | static match | |
1a9745d2 | 287 | top_var_list (gfc_data *d) |
b4f45d02 | 288 | { |
c1977dbe | 289 | gfc_data_variable var, *tail, *new_var; |
b4f45d02 | 290 | match m; |
291 | ||
292 | tail = NULL; | |
293 | ||
294 | for (;;) | |
295 | { | |
296 | m = var_element (&var); | |
297 | if (m == MATCH_NO) | |
298 | goto syntax; | |
299 | if (m == MATCH_ERROR) | |
300 | return MATCH_ERROR; | |
301 | ||
c1977dbe | 302 | new_var = gfc_get_data_variable (); |
303 | *new_var = var; | |
b4f45d02 | 304 | |
305 | if (tail == NULL) | |
c1977dbe | 306 | d->var = new_var; |
b4f45d02 | 307 | else |
c1977dbe | 308 | tail->next = new_var; |
b4f45d02 | 309 | |
c1977dbe | 310 | tail = new_var; |
b4f45d02 | 311 | |
312 | if (gfc_match_char ('/') == MATCH_YES) | |
313 | break; | |
314 | if (gfc_match_char (',') != MATCH_YES) | |
315 | goto syntax; | |
316 | } | |
317 | ||
318 | return MATCH_YES; | |
319 | ||
320 | syntax: | |
321 | gfc_syntax_error (ST_DATA); | |
af29c1f0 | 322 | gfc_free_data_all (gfc_current_ns); |
b4f45d02 | 323 | return MATCH_ERROR; |
324 | } | |
325 | ||
326 | ||
327 | static match | |
1a9745d2 | 328 | match_data_constant (gfc_expr **result) |
b4f45d02 | 329 | { |
330 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c2958b6b | 331 | gfc_symbol *sym, *dt_sym = NULL; |
b4f45d02 | 332 | gfc_expr *expr; |
333 | match m; | |
096d4ad9 | 334 | locus old_loc; |
b4f45d02 | 335 | |
336 | m = gfc_match_literal_constant (&expr, 1); | |
337 | if (m == MATCH_YES) | |
338 | { | |
339 | *result = expr; | |
340 | return MATCH_YES; | |
341 | } | |
342 | ||
343 | if (m == MATCH_ERROR) | |
344 | return MATCH_ERROR; | |
345 | ||
346 | m = gfc_match_null (result); | |
347 | if (m != MATCH_NO) | |
348 | return m; | |
349 | ||
096d4ad9 | 350 | old_loc = gfc_current_locus; |
351 | ||
352 | /* Should this be a structure component, try to match it | |
353 | before matching a name. */ | |
354 | m = gfc_match_rvalue (result); | |
355 | if (m == MATCH_ERROR) | |
356 | return m; | |
357 | ||
358 | if (m == MATCH_YES && (*result)->expr_type == EXPR_STRUCTURE) | |
359 | { | |
360 | if (gfc_simplify_expr (*result, 0) == FAILURE) | |
361 | m = MATCH_ERROR; | |
362 | return m; | |
363 | } | |
364 | ||
365 | gfc_current_locus = old_loc; | |
366 | ||
b4f45d02 | 367 | m = gfc_match_name (name); |
368 | if (m != MATCH_YES) | |
369 | return m; | |
370 | ||
371 | if (gfc_find_symbol (name, NULL, 1, &sym)) | |
372 | return MATCH_ERROR; | |
373 | ||
c2958b6b | 374 | if (sym && sym->attr.generic) |
375 | dt_sym = gfc_find_dt_in_generic (sym); | |
376 | ||
b4f45d02 | 377 | if (sym == NULL |
c2958b6b | 378 | || (sym->attr.flavor != FL_PARAMETER |
379 | && (!dt_sym || dt_sym->attr.flavor != FL_DERIVED))) | |
b4f45d02 | 380 | { |
381 | gfc_error ("Symbol '%s' must be a PARAMETER in DATA statement at %C", | |
382 | name); | |
383 | return MATCH_ERROR; | |
384 | } | |
c2958b6b | 385 | else if (dt_sym && dt_sym->attr.flavor == FL_DERIVED) |
386 | return gfc_match_structure_constructor (dt_sym, result); | |
b4f45d02 | 387 | |
f0a51891 | 388 | /* Check to see if the value is an initialization array expression. */ |
389 | if (sym->value->expr_type == EXPR_ARRAY) | |
390 | { | |
391 | gfc_current_locus = old_loc; | |
392 | ||
393 | m = gfc_match_init_expr (result); | |
394 | if (m == MATCH_ERROR) | |
395 | return m; | |
396 | ||
397 | if (m == MATCH_YES) | |
398 | { | |
399 | if (gfc_simplify_expr (*result, 0) == FAILURE) | |
400 | m = MATCH_ERROR; | |
401 | ||
402 | if ((*result)->expr_type == EXPR_CONSTANT) | |
403 | return m; | |
404 | else | |
405 | { | |
406 | gfc_error ("Invalid initializer %s in Data statement at %C", name); | |
407 | return MATCH_ERROR; | |
408 | } | |
409 | } | |
410 | } | |
411 | ||
b4f45d02 | 412 | *result = gfc_copy_expr (sym->value); |
413 | return MATCH_YES; | |
414 | } | |
415 | ||
416 | ||
417 | /* Match a list of values in a DATA statement. The leading '/' has | |
418 | already been seen at this point. */ | |
419 | ||
420 | static match | |
1a9745d2 | 421 | top_val_list (gfc_data *data) |
b4f45d02 | 422 | { |
c1977dbe | 423 | gfc_data_value *new_val, *tail; |
b4f45d02 | 424 | gfc_expr *expr; |
b4f45d02 | 425 | match m; |
426 | ||
427 | tail = NULL; | |
428 | ||
429 | for (;;) | |
430 | { | |
431 | m = match_data_constant (&expr); | |
432 | if (m == MATCH_NO) | |
433 | goto syntax; | |
434 | if (m == MATCH_ERROR) | |
435 | return MATCH_ERROR; | |
436 | ||
c1977dbe | 437 | new_val = gfc_get_data_value (); |
438 | mpz_init (new_val->repeat); | |
b4f45d02 | 439 | |
440 | if (tail == NULL) | |
c1977dbe | 441 | data->value = new_val; |
b4f45d02 | 442 | else |
c1977dbe | 443 | tail->next = new_val; |
b4f45d02 | 444 | |
c1977dbe | 445 | tail = new_val; |
b4f45d02 | 446 | |
447 | if (expr->ts.type != BT_INTEGER || gfc_match_char ('*') != MATCH_YES) | |
448 | { | |
449 | tail->expr = expr; | |
7d74abfd | 450 | mpz_set_ui (tail->repeat, 1); |
b4f45d02 | 451 | } |
452 | else | |
453 | { | |
7d74abfd | 454 | if (expr->ts.type == BT_INTEGER) |
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 | } | |
513 | ||
8b0a2e85 | 514 | if (gfc_implicit_pure (NULL)) |
515 | gfc_current_ns->proc_name->attr.implicit_pure = 0; | |
516 | ||
344b937e | 517 | /* Mark the variable as having appeared in a data statement. */ |
518 | if (gfc_add_data (&sym->attr, sym->name, &sym->declared_at) == FAILURE) | |
519 | { | |
434f0922 | 520 | free (newdata); |
344b937e | 521 | return MATCH_ERROR; |
522 | } | |
523 | ||
b4f45d02 | 524 | /* Chain in namespace list of DATA initializers. */ |
525 | newdata->next = gfc_current_ns->data; | |
526 | gfc_current_ns->data = newdata; | |
527 | ||
528 | return m; | |
529 | } | |
530 | ||
1a9745d2 | 531 | |
b4f45d02 | 532 | /* Match the stuff following a DATA statement. If ERROR_FLAG is set, |
39fca56b | 533 | we are matching a DATA statement and are therefore issuing an error |
e14bee04 | 534 | if we encounter something unexpected, if not, we're trying to match |
fe06c0d5 | 535 | an old-style initialization expression of the form INTEGER I /2/. */ |
b4f45d02 | 536 | |
537 | match | |
538 | gfc_match_data (void) | |
539 | { | |
c1977dbe | 540 | gfc_data *new_data; |
b4f45d02 | 541 | match m; |
542 | ||
cbbac028 | 543 | set_in_match_data (true); |
1bfea7e8 | 544 | |
b4f45d02 | 545 | for (;;) |
546 | { | |
c1977dbe | 547 | new_data = gfc_get_data (); |
548 | new_data->where = gfc_current_locus; | |
b4f45d02 | 549 | |
c1977dbe | 550 | m = top_var_list (new_data); |
b4f45d02 | 551 | if (m != MATCH_YES) |
552 | goto cleanup; | |
553 | ||
c1977dbe | 554 | m = top_val_list (new_data); |
b4f45d02 | 555 | if (m != MATCH_YES) |
556 | goto cleanup; | |
557 | ||
c1977dbe | 558 | new_data->next = gfc_current_ns->data; |
559 | gfc_current_ns->data = new_data; | |
b4f45d02 | 560 | |
561 | if (gfc_match_eos () == MATCH_YES) | |
562 | break; | |
563 | ||
564 | gfc_match_char (','); /* Optional comma */ | |
565 | } | |
566 | ||
cbbac028 | 567 | set_in_match_data (false); |
1bfea7e8 | 568 | |
b4f45d02 | 569 | if (gfc_pure (NULL)) |
570 | { | |
571 | gfc_error ("DATA statement at %C is not allowed in a PURE procedure"); | |
572 | return MATCH_ERROR; | |
573 | } | |
574 | ||
8b0a2e85 | 575 | if (gfc_implicit_pure (NULL)) |
576 | gfc_current_ns->proc_name->attr.implicit_pure = 0; | |
577 | ||
b4f45d02 | 578 | return MATCH_YES; |
579 | ||
580 | cleanup: | |
cbbac028 | 581 | set_in_match_data (false); |
c1977dbe | 582 | gfc_free_data (new_data); |
b4f45d02 | 583 | return MATCH_ERROR; |
584 | } | |
585 | ||
586 | ||
587 | /************************ Declaration statements *********************/ | |
588 | ||
e97ac7c0 | 589 | |
df084314 | 590 | /* Auxiliary function to merge DIMENSION and CODIMENSION array specs. */ |
e97ac7c0 | 591 | |
592 | static void | |
593 | merge_array_spec (gfc_array_spec *from, gfc_array_spec *to, bool copy) | |
594 | { | |
595 | int i; | |
596 | ||
597 | if (to->rank == 0 && from->rank > 0) | |
598 | { | |
599 | to->rank = from->rank; | |
600 | to->type = from->type; | |
601 | to->cray_pointee = from->cray_pointee; | |
602 | to->cp_was_assumed = from->cp_was_assumed; | |
603 | ||
604 | for (i = 0; i < to->corank; i++) | |
605 | { | |
606 | to->lower[from->rank + i] = to->lower[i]; | |
607 | to->upper[from->rank + i] = to->upper[i]; | |
608 | } | |
609 | for (i = 0; i < from->rank; i++) | |
610 | { | |
611 | if (copy) | |
612 | { | |
613 | to->lower[i] = gfc_copy_expr (from->lower[i]); | |
614 | to->upper[i] = gfc_copy_expr (from->upper[i]); | |
615 | } | |
616 | else | |
617 | { | |
618 | to->lower[i] = from->lower[i]; | |
619 | to->upper[i] = from->upper[i]; | |
620 | } | |
621 | } | |
622 | } | |
623 | else if (to->corank == 0 && from->corank > 0) | |
624 | { | |
625 | to->corank = from->corank; | |
626 | to->cotype = from->cotype; | |
627 | ||
628 | for (i = 0; i < from->corank; i++) | |
629 | { | |
630 | if (copy) | |
631 | { | |
632 | to->lower[to->rank + i] = gfc_copy_expr (from->lower[i]); | |
633 | to->upper[to->rank + i] = gfc_copy_expr (from->upper[i]); | |
634 | } | |
635 | else | |
636 | { | |
637 | to->lower[to->rank + i] = from->lower[i]; | |
638 | to->upper[to->rank + i] = from->upper[i]; | |
639 | } | |
640 | } | |
641 | } | |
642 | } | |
643 | ||
644 | ||
4ee9c684 | 645 | /* Match an intent specification. Since this can only happen after an |
646 | INTENT word, a legal intent-spec must follow. */ | |
647 | ||
648 | static sym_intent | |
649 | match_intent_spec (void) | |
650 | { | |
651 | ||
652 | if (gfc_match (" ( in out )") == MATCH_YES) | |
653 | return INTENT_INOUT; | |
654 | if (gfc_match (" ( in )") == MATCH_YES) | |
655 | return INTENT_IN; | |
656 | if (gfc_match (" ( out )") == MATCH_YES) | |
657 | return INTENT_OUT; | |
658 | ||
659 | gfc_error ("Bad INTENT specification at %C"); | |
660 | return INTENT_UNKNOWN; | |
661 | } | |
662 | ||
663 | ||
664 | /* Matches a character length specification, which is either a | |
3e715c81 | 665 | specification expression, '*', or ':'. */ |
4ee9c684 | 666 | |
667 | static match | |
3e715c81 | 668 | char_len_param_value (gfc_expr **expr, bool *deferred) |
4ee9c684 | 669 | { |
294d58d3 | 670 | match m; |
671 | ||
3e715c81 | 672 | *expr = NULL; |
673 | *deferred = false; | |
674 | ||
4ee9c684 | 675 | if (gfc_match_char ('*') == MATCH_YES) |
3e715c81 | 676 | return MATCH_YES; |
677 | ||
678 | if (gfc_match_char (':') == MATCH_YES) | |
4ee9c684 | 679 | { |
f25dbbf7 | 680 | if (gfc_notify_std (GFC_STD_F2003, "deferred type " |
3e715c81 | 681 | "parameter at %C") == FAILURE) |
682 | return MATCH_ERROR; | |
683 | ||
684 | *deferred = true; | |
685 | ||
4ee9c684 | 686 | return MATCH_YES; |
687 | } | |
688 | ||
294d58d3 | 689 | m = gfc_match_expr (expr); |
40de255b | 690 | |
691 | if (m == MATCH_YES | |
692 | && gfc_expr_check_typed (*expr, gfc_current_ns, false) == FAILURE) | |
693 | return MATCH_ERROR; | |
694 | ||
294d58d3 | 695 | if (m == MATCH_YES && (*expr)->expr_type == EXPR_FUNCTION) |
696 | { | |
697 | if ((*expr)->value.function.actual | |
698 | && (*expr)->value.function.actual->expr->symtree) | |
699 | { | |
700 | gfc_expr *e; | |
701 | e = (*expr)->value.function.actual->expr; | |
702 | if (e->symtree->n.sym->attr.flavor == FL_PROCEDURE | |
703 | && e->expr_type == EXPR_VARIABLE) | |
704 | { | |
705 | if (e->symtree->n.sym->ts.type == BT_UNKNOWN) | |
706 | goto syntax; | |
707 | if (e->symtree->n.sym->ts.type == BT_CHARACTER | |
eeebe20b | 708 | && e->symtree->n.sym->ts.u.cl |
709 | && e->symtree->n.sym->ts.u.cl->length->ts.type == BT_UNKNOWN) | |
294d58d3 | 710 | goto syntax; |
711 | } | |
712 | } | |
713 | } | |
714 | return m; | |
715 | ||
716 | syntax: | |
717 | gfc_error ("Conflict in attributes of function argument at %C"); | |
718 | return MATCH_ERROR; | |
4ee9c684 | 719 | } |
720 | ||
721 | ||
722 | /* A character length is a '*' followed by a literal integer or a | |
723 | char_len_param_value in parenthesis. */ | |
724 | ||
725 | static match | |
926b8757 | 726 | match_char_length (gfc_expr **expr, bool *deferred, bool obsolenscent_check) |
4ee9c684 | 727 | { |
3bd3b616 | 728 | int length; |
4ee9c684 | 729 | match m; |
730 | ||
3e715c81 | 731 | *deferred = false; |
4ee9c684 | 732 | m = gfc_match_char ('*'); |
733 | if (m != MATCH_YES) | |
734 | return m; | |
735 | ||
3bd3b616 | 736 | m = gfc_match_small_literal_int (&length, NULL); |
4ee9c684 | 737 | if (m == MATCH_ERROR) |
738 | return m; | |
739 | ||
740 | if (m == MATCH_YES) | |
741 | { | |
926b8757 | 742 | if (obsolenscent_check |
f25dbbf7 | 743 | && gfc_notify_std (GFC_STD_F95_OBS, |
926b8757 | 744 | "Old-style character length at %C") == FAILURE) |
8e9b41f0 | 745 | return MATCH_ERROR; |
126387b5 | 746 | *expr = gfc_get_int_expr (gfc_default_integer_kind, NULL, length); |
4ee9c684 | 747 | return m; |
748 | } | |
749 | ||
750 | if (gfc_match_char ('(') == MATCH_NO) | |
751 | goto syntax; | |
752 | ||
3e715c81 | 753 | m = char_len_param_value (expr, deferred); |
077932f9 | 754 | if (m != MATCH_YES && gfc_matching_function) |
755 | { | |
756 | gfc_undo_symbols (); | |
757 | m = MATCH_YES; | |
758 | } | |
759 | ||
4ee9c684 | 760 | if (m == MATCH_ERROR) |
761 | return m; | |
762 | if (m == MATCH_NO) | |
763 | goto syntax; | |
764 | ||
765 | if (gfc_match_char (')') == MATCH_NO) | |
766 | { | |
767 | gfc_free_expr (*expr); | |
768 | *expr = NULL; | |
769 | goto syntax; | |
770 | } | |
771 | ||
772 | return MATCH_YES; | |
773 | ||
774 | syntax: | |
775 | gfc_error ("Syntax error in character length specification at %C"); | |
776 | return MATCH_ERROR; | |
777 | } | |
778 | ||
779 | ||
ee893be6 | 780 | /* Special subroutine for finding a symbol. Check if the name is found |
781 | in the current name space. If not, and we're compiling a function or | |
782 | subroutine and the parent compilation unit is an interface, then check | |
783 | to see if the name we've been given is the name of the interface | |
784 | (located in another namespace). */ | |
4ee9c684 | 785 | |
786 | static int | |
36b0a1b0 | 787 | find_special (const char *name, gfc_symbol **result, bool allow_subroutine) |
4ee9c684 | 788 | { |
789 | gfc_state_data *s; | |
36b0a1b0 | 790 | gfc_symtree *st; |
ee893be6 | 791 | int i; |
4ee9c684 | 792 | |
36b0a1b0 | 793 | i = gfc_get_sym_tree (name, NULL, &st, allow_subroutine); |
e14bee04 | 794 | if (i == 0) |
36b0a1b0 | 795 | { |
796 | *result = st ? st->n.sym : NULL; | |
797 | goto end; | |
798 | } | |
e14bee04 | 799 | |
4ee9c684 | 800 | if (gfc_current_state () != COMP_SUBROUTINE |
801 | && gfc_current_state () != COMP_FUNCTION) | |
ee893be6 | 802 | goto end; |
4ee9c684 | 803 | |
804 | s = gfc_state_stack->previous; | |
805 | if (s == NULL) | |
ee893be6 | 806 | goto end; |
4ee9c684 | 807 | |
808 | if (s->state != COMP_INTERFACE) | |
ee893be6 | 809 | goto end; |
4ee9c684 | 810 | if (s->sym == NULL) |
f6d0e37a | 811 | goto end; /* Nameless interface. */ |
4ee9c684 | 812 | |
813 | if (strcmp (name, s->sym->name) == 0) | |
814 | { | |
815 | *result = s->sym; | |
816 | return 0; | |
817 | } | |
818 | ||
ee893be6 | 819 | end: |
820 | return i; | |
4ee9c684 | 821 | } |
822 | ||
823 | ||
824 | /* Special subroutine for getting a symbol node associated with a | |
825 | procedure name, used in SUBROUTINE and FUNCTION statements. The | |
826 | symbol is created in the parent using with symtree node in the | |
827 | child unit pointing to the symbol. If the current namespace has no | |
828 | parent, then the symbol is just created in the current unit. */ | |
829 | ||
830 | static int | |
1a9745d2 | 831 | get_proc_name (const char *name, gfc_symbol **result, bool module_fcn_entry) |
4ee9c684 | 832 | { |
833 | gfc_symtree *st; | |
834 | gfc_symbol *sym; | |
2ddb8ed9 | 835 | int rc = 0; |
4ee9c684 | 836 | |
d77f260f | 837 | /* Module functions have to be left in their own namespace because |
838 | they have potentially (almost certainly!) already been referenced. | |
839 | In this sense, they are rather like external functions. This is | |
840 | fixed up in resolve.c(resolve_entries), where the symbol name- | |
841 | space is set to point to the master function, so that the fake | |
842 | result mechanism can work. */ | |
843 | if (module_fcn_entry) | |
861d824f | 844 | { |
845 | /* Present if entry is declared to be a module procedure. */ | |
846 | rc = gfc_find_symbol (name, gfc_current_ns->parent, 0, result); | |
c6a05992 | 847 | |
861d824f | 848 | if (*result == NULL) |
849 | rc = gfc_get_symbol (name, NULL, result); | |
a78f714d | 850 | else if (!gfc_get_symbol (name, NULL, &sym) && sym |
c6a05992 | 851 | && (*result)->ts.type == BT_UNKNOWN |
852 | && sym->attr.flavor == FL_UNKNOWN) | |
853 | /* Pick up the typespec for the entry, if declared in the function | |
854 | body. Note that this symbol is FL_UNKNOWN because it will | |
855 | only have appeared in a type declaration. The local symtree | |
856 | is set to point to the module symbol and a unique symtree | |
857 | to the local version. This latter ensures a correct clearing | |
858 | of the symbols. */ | |
a78f714d | 859 | { |
860 | /* If the ENTRY proceeds its specification, we need to ensure | |
861 | that this does not raise a "has no IMPLICIT type" error. */ | |
862 | if (sym->ts.type == BT_UNKNOWN) | |
2168078b | 863 | sym->attr.untyped = 1; |
a78f714d | 864 | |
2168078b | 865 | (*result)->ts = sym->ts; |
a78f714d | 866 | |
867 | /* Put the symbol in the procedure namespace so that, should | |
69b1505f | 868 | the ENTRY precede its specification, the specification |
a78f714d | 869 | can be applied. */ |
870 | (*result)->ns = gfc_current_ns; | |
871 | ||
872 | gfc_find_sym_tree (name, gfc_current_ns, 0, &st); | |
873 | st->n.sym = *result; | |
874 | st = gfc_get_unique_symtree (gfc_current_ns); | |
875 | st->n.sym = sym; | |
876 | } | |
861d824f | 877 | } |
858f9894 | 878 | else |
879 | rc = gfc_get_symbol (name, gfc_current_ns->parent, result); | |
4ee9c684 | 880 | |
2ddb8ed9 | 881 | if (rc) |
882 | return rc; | |
883 | ||
858f9894 | 884 | sym = *result; |
c717e399 | 885 | gfc_current_ns->refs++; |
4ee9c684 | 886 | |
c1977dbe | 887 | if (sym && !sym->gfc_new && gfc_current_state () != COMP_INTERFACE) |
858f9894 | 888 | { |
16f49153 | 889 | /* Trap another encompassed procedure with the same name. All |
890 | these conditions are necessary to avoid picking up an entry | |
891 | whose name clashes with that of the encompassing procedure; | |
892 | this is handled using gsymbols to register unique,globally | |
893 | accessible names. */ | |
858f9894 | 894 | if (sym->attr.flavor != 0 |
1a9745d2 | 895 | && sym->attr.proc != 0 |
896 | && (sym->attr.subroutine || sym->attr.function) | |
897 | && sym->attr.if_source != IFSRC_UNKNOWN) | |
858f9894 | 898 | gfc_error_now ("Procedure '%s' at %C is already defined at %L", |
899 | name, &sym->declared_at); | |
900 | ||
5720fd2f | 901 | /* Trap a procedure with a name the same as interface in the |
902 | encompassing scope. */ | |
903 | if (sym->attr.generic != 0 | |
db697236 | 904 | && (sym->attr.subroutine || sym->attr.function) |
905 | && !sym->attr.mod_proc) | |
5720fd2f | 906 | gfc_error_now ("Name '%s' at %C is already defined" |
907 | " as a generic interface at %L", | |
908 | name, &sym->declared_at); | |
909 | ||
858f9894 | 910 | /* Trap declarations of attributes in encompassing scope. The |
911 | signature for this is that ts.kind is set. Legitimate | |
912 | references only set ts.type. */ | |
913 | if (sym->ts.kind != 0 | |
1a9745d2 | 914 | && !sym->attr.implicit_type |
915 | && sym->attr.proc == 0 | |
916 | && gfc_current_ns->parent != NULL | |
917 | && sym->attr.access == 0 | |
918 | && !module_fcn_entry) | |
919 | gfc_error_now ("Procedure '%s' at %C has an explicit interface " | |
920 | "and must not have attributes declared at %L", | |
858f9894 | 921 | name, &sym->declared_at); |
922 | } | |
923 | ||
924 | if (gfc_current_ns->parent == NULL || *result == NULL) | |
925 | return rc; | |
4ee9c684 | 926 | |
d77f260f | 927 | /* Module function entries will already have a symtree in |
928 | the current namespace but will need one at module level. */ | |
929 | if (module_fcn_entry) | |
861d824f | 930 | { |
931 | /* Present if entry is declared to be a module procedure. */ | |
932 | rc = gfc_find_sym_tree (name, gfc_current_ns->parent, 0, &st); | |
933 | if (st == NULL) | |
934 | st = gfc_new_symtree (&gfc_current_ns->parent->sym_root, name); | |
935 | } | |
d77f260f | 936 | else |
937 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); | |
4ee9c684 | 938 | |
4ee9c684 | 939 | st->n.sym = sym; |
940 | sym->refs++; | |
941 | ||
f6d0e37a | 942 | /* See if the procedure should be a module procedure. */ |
4ee9c684 | 943 | |
d77f260f | 944 | if (((sym->ns->proc_name != NULL |
861d824f | 945 | && sym->ns->proc_name->attr.flavor == FL_MODULE |
946 | && sym->attr.proc != PROC_MODULE) | |
947 | || (module_fcn_entry && sym->attr.proc != PROC_MODULE)) | |
948 | && gfc_add_procedure (&sym->attr, PROC_MODULE, | |
949 | sym->name, NULL) == FAILURE) | |
4ee9c684 | 950 | rc = 2; |
951 | ||
952 | return rc; | |
953 | } | |
954 | ||
955 | ||
c5d33754 | 956 | /* Verify that the given symbol representing a parameter is C |
957 | interoperable, by checking to see if it was marked as such after | |
958 | its declaration. If the given symbol is not interoperable, a | |
959 | warning is reported, thus removing the need to return the status to | |
960 | the calling function. The standard does not require the user use | |
961 | one of the iso_c_binding named constants to declare an | |
962 | interoperable parameter, but we can't be sure if the param is C | |
963 | interop or not if the user doesn't. For example, integer(4) may be | |
964 | legal Fortran, but doesn't have meaning in C. It may interop with | |
965 | a number of the C types, which causes a problem because the | |
966 | compiler can't know which one. This code is almost certainly not | |
967 | portable, and the user will get what they deserve if the C type | |
968 | across platforms isn't always interoperable with integer(4). If | |
969 | the user had used something like integer(c_int) or integer(c_long), | |
970 | the compiler could have automatically handled the varying sizes | |
971 | across platforms. */ | |
972 | ||
f6bb8f4b | 973 | gfc_try |
2564c57a | 974 | gfc_verify_c_interop_param (gfc_symbol *sym) |
c5d33754 | 975 | { |
976 | int is_c_interop = 0; | |
f6bb8f4b | 977 | gfc_try retval = SUCCESS; |
c5d33754 | 978 | |
979 | /* We check implicitly typed variables in symbol.c:gfc_set_default_type(). | |
980 | Don't repeat the checks here. */ | |
981 | if (sym->attr.implicit_type) | |
982 | return SUCCESS; | |
983 | ||
984 | /* For subroutines or functions that are passed to a BIND(C) procedure, | |
985 | they're interoperable if they're BIND(C) and their params are all | |
986 | interoperable. */ | |
987 | if (sym->attr.flavor == FL_PROCEDURE) | |
988 | { | |
989 | if (sym->attr.is_bind_c == 0) | |
990 | { | |
991 | gfc_error_now ("Procedure '%s' at %L must have the BIND(C) " | |
992 | "attribute to be C interoperable", sym->name, | |
993 | &(sym->declared_at)); | |
994 | ||
995 | return FAILURE; | |
996 | } | |
997 | else | |
998 | { | |
999 | if (sym->attr.is_c_interop == 1) | |
1000 | /* We've already checked this procedure; don't check it again. */ | |
1001 | return SUCCESS; | |
1002 | else | |
1003 | return verify_bind_c_sym (sym, &(sym->ts), sym->attr.in_common, | |
1004 | sym->common_block); | |
1005 | } | |
1006 | } | |
1007 | ||
1008 | /* See if we've stored a reference to a procedure that owns sym. */ | |
1009 | if (sym->ns != NULL && sym->ns->proc_name != NULL) | |
1010 | { | |
1011 | if (sym->ns->proc_name->attr.is_bind_c == 1) | |
1012 | { | |
2564c57a | 1013 | is_c_interop = (gfc_verify_c_interop (&(sym->ts)) == SUCCESS ? 1 : 0); |
c5d33754 | 1014 | |
1015 | if (is_c_interop != 1) | |
1016 | { | |
1017 | /* Make personalized messages to give better feedback. */ | |
1018 | if (sym->ts.type == BT_DERIVED) | |
2564c57a | 1019 | gfc_error ("Variable '%s' at %L is a dummy argument to the " |
1020 | "BIND(C) procedure '%s' but is not C interoperable " | |
c5d33754 | 1021 | "because derived type '%s' is not C interoperable", |
1022 | sym->name, &(sym->declared_at), | |
1023 | sym->ns->proc_name->name, | |
eeebe20b | 1024 | sym->ts.u.derived->name); |
2564c57a | 1025 | else if (sym->ts.type == BT_CLASS) |
1026 | gfc_error ("Variable '%s' at %L is a dummy argument to the " | |
1027 | "BIND(C) procedure '%s' but is not C interoperable " | |
1028 | "because it is polymorphic", | |
1029 | sym->name, &(sym->declared_at), | |
1030 | sym->ns->proc_name->name); | |
e25ecd2b | 1031 | else if (gfc_option.warn_c_binding_type) |
1032 | gfc_warning ("Variable '%s' at %L is a dummy argument of the " | |
c5d33754 | 1033 | "BIND(C) procedure '%s' but may not be C " |
1034 | "interoperable", | |
1035 | sym->name, &(sym->declared_at), | |
1036 | sym->ns->proc_name->name); | |
1037 | } | |
e4eda3ec | 1038 | |
1039 | /* Character strings are only C interoperable if they have a | |
1040 | length of 1. */ | |
1041 | if (sym->ts.type == BT_CHARACTER) | |
1042 | { | |
eeebe20b | 1043 | gfc_charlen *cl = sym->ts.u.cl; |
e4eda3ec | 1044 | if (!cl || !cl->length || cl->length->expr_type != EXPR_CONSTANT |
1045 | || mpz_cmp_si (cl->length->value.integer, 1) != 0) | |
1046 | { | |
1047 | gfc_error ("Character argument '%s' at %L " | |
1048 | "must be length 1 because " | |
1049 | "procedure '%s' is BIND(C)", | |
1050 | sym->name, &sym->declared_at, | |
1051 | sym->ns->proc_name->name); | |
1052 | retval = FAILURE; | |
1053 | } | |
1054 | } | |
1055 | ||
c5d33754 | 1056 | /* We have to make sure that any param to a bind(c) routine does |
1057 | not have the allocatable, pointer, or optional attributes, | |
1058 | according to J3/04-007, section 5.1. */ | |
1059 | if (sym->attr.allocatable == 1) | |
1060 | { | |
1061 | gfc_error ("Variable '%s' at %L cannot have the " | |
1062 | "ALLOCATABLE attribute because procedure '%s'" | |
1063 | " is BIND(C)", sym->name, &(sym->declared_at), | |
1064 | sym->ns->proc_name->name); | |
1065 | retval = FAILURE; | |
1066 | } | |
1067 | ||
1068 | if (sym->attr.pointer == 1) | |
1069 | { | |
1070 | gfc_error ("Variable '%s' at %L cannot have the " | |
1071 | "POINTER attribute because procedure '%s'" | |
1072 | " is BIND(C)", sym->name, &(sym->declared_at), | |
1073 | sym->ns->proc_name->name); | |
1074 | retval = FAILURE; | |
1075 | } | |
1076 | ||
495e197c | 1077 | if (sym->attr.optional == 1 && sym->attr.value) |
c5d33754 | 1078 | { |
495e197c | 1079 | gfc_error ("Variable '%s' at %L cannot have both the OPTIONAL " |
1080 | "and the VALUE attribute because procedure '%s' " | |
1081 | "is BIND(C)", sym->name, &(sym->declared_at), | |
c5d33754 | 1082 | sym->ns->proc_name->name); |
1083 | retval = FAILURE; | |
1084 | } | |
495e197c | 1085 | else if (sym->attr.optional == 1 |
f25dbbf7 | 1086 | && gfc_notify_std (GFC_STD_F2008_TS, "Variable '%s' " |
495e197c | 1087 | "at %L with OPTIONAL attribute in " |
1088 | "procedure '%s' which is BIND(C)", | |
1089 | sym->name, &(sym->declared_at), | |
1090 | sym->ns->proc_name->name) | |
1091 | == FAILURE) | |
1092 | retval = FAILURE; | |
c5d33754 | 1093 | |
1094 | /* Make sure that if it has the dimension attribute, that it is | |
1095 | either assumed size or explicit shape. */ | |
1096 | if (sym->as != NULL) | |
1097 | { | |
1098 | if (sym->as->type == AS_ASSUMED_SHAPE) | |
1099 | { | |
1100 | gfc_error ("Assumed-shape array '%s' at %L cannot be an " | |
1101 | "argument to the procedure '%s' at %L because " | |
1102 | "the procedure is BIND(C)", sym->name, | |
1103 | &(sym->declared_at), sym->ns->proc_name->name, | |
1104 | &(sym->ns->proc_name->declared_at)); | |
1105 | retval = FAILURE; | |
1106 | } | |
1107 | ||
1108 | if (sym->as->type == AS_DEFERRED) | |
1109 | { | |
1110 | gfc_error ("Deferred-shape array '%s' at %L cannot be an " | |
1111 | "argument to the procedure '%s' at %L because " | |
1112 | "the procedure is BIND(C)", sym->name, | |
1113 | &(sym->declared_at), sym->ns->proc_name->name, | |
1114 | &(sym->ns->proc_name->declared_at)); | |
1115 | retval = FAILURE; | |
1116 | } | |
1117 | } | |
1118 | } | |
1119 | } | |
1120 | ||
1121 | return retval; | |
1122 | } | |
1123 | ||
1124 | ||
1de1b1a9 | 1125 | |
c5d33754 | 1126 | /* Function called by variable_decl() that adds a name to the symbol table. */ |
4ee9c684 | 1127 | |
f6bb8f4b | 1128 | static gfc_try |
3e715c81 | 1129 | build_sym (const char *name, gfc_charlen *cl, bool cl_deferred, |
1a9745d2 | 1130 | gfc_array_spec **as, locus *var_locus) |
4ee9c684 | 1131 | { |
1132 | symbol_attribute attr; | |
1133 | gfc_symbol *sym; | |
1134 | ||
ee893be6 | 1135 | if (gfc_get_symbol (name, NULL, &sym)) |
4ee9c684 | 1136 | return FAILURE; |
1137 | ||
f6d0e37a | 1138 | /* Start updating the symbol table. Add basic type attribute if present. */ |
4ee9c684 | 1139 | if (current_ts.type != BT_UNKNOWN |
1a9745d2 | 1140 | && (sym->attr.implicit_type == 0 |
1141 | || !gfc_compare_types (&sym->ts, ¤t_ts)) | |
4ee9c684 | 1142 | && gfc_add_type (sym, ¤t_ts, var_locus) == FAILURE) |
1143 | return FAILURE; | |
1144 | ||
1145 | if (sym->ts.type == BT_CHARACTER) | |
3e715c81 | 1146 | { |
1147 | sym->ts.u.cl = cl; | |
1148 | sym->ts.deferred = cl_deferred; | |
1149 | } | |
4ee9c684 | 1150 | |
1151 | /* Add dimension attribute if present. */ | |
1152 | if (gfc_set_array_spec (sym, *as, var_locus) == FAILURE) | |
1153 | return FAILURE; | |
1154 | *as = NULL; | |
1155 | ||
1156 | /* Add attribute to symbol. The copy is so that we can reset the | |
1157 | dimension attribute. */ | |
1158 | attr = current_attr; | |
1159 | attr.dimension = 0; | |
aff518b0 | 1160 | attr.codimension = 0; |
4ee9c684 | 1161 | |
1162 | if (gfc_copy_attr (&sym->attr, &attr, var_locus) == FAILURE) | |
1163 | return FAILURE; | |
1164 | ||
c5d33754 | 1165 | /* Finish any work that may need to be done for the binding label, |
1166 | if it's a bind(c). The bind(c) attr is found before the symbol | |
1167 | is made, and before the symbol name (for data decls), so the | |
1168 | current_ts is holding the binding label, or nothing if the | |
1169 | name= attr wasn't given. Therefore, test here if we're dealing | |
1170 | with a bind(c) and make sure the binding label is set correctly. */ | |
1171 | if (sym->attr.is_bind_c == 1) | |
1172 | { | |
7b2060ba | 1173 | if (!sym->binding_label) |
c5d33754 | 1174 | { |
825718f9 | 1175 | /* Set the binding label and verify that if a NAME= was specified |
1176 | then only one identifier was in the entity-decl-list. */ | |
7b2060ba | 1177 | if (set_binding_label (&sym->binding_label, sym->name, |
825718f9 | 1178 | num_idents_on_line) == FAILURE) |
c5d33754 | 1179 | return FAILURE; |
1180 | } | |
1181 | } | |
1182 | ||
1183 | /* See if we know we're in a common block, and if it's a bind(c) | |
1184 | common then we need to make sure we're an interoperable type. */ | |
1185 | if (sym->attr.in_common == 1) | |
1186 | { | |
1187 | /* Test the common block object. */ | |
1188 | if (sym->common_block != NULL && sym->common_block->is_bind_c == 1 | |
1189 | && sym->ts.is_c_interop != 1) | |
1190 | { | |
1191 | gfc_error_now ("Variable '%s' in common block '%s' at %C " | |
1192 | "must be declared with a C interoperable " | |
1193 | "kind since common block '%s' is BIND(C)", | |
1194 | sym->name, sym->common_block->name, | |
1195 | sym->common_block->name); | |
1196 | gfc_clear_error (); | |
1197 | } | |
1198 | } | |
1199 | ||
2457a77e | 1200 | sym->attr.implied_index = 0; |
1201 | ||
fa102e56 | 1202 | if (sym->ts.type == BT_CLASS) |
29dae2bf | 1203 | return gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as, false); |
1de1b1a9 | 1204 | |
4ee9c684 | 1205 | return SUCCESS; |
1206 | } | |
1207 | ||
1a9745d2 | 1208 | |
a270dc8e | 1209 | /* Set character constant to the given length. The constant will be padded or |
d1a39099 | 1210 | truncated. If we're inside an array constructor without a typespec, we |
1211 | additionally check that all elements have the same length; check_len -1 | |
1212 | means no checking. */ | |
a270dc8e | 1213 | |
1214 | void | |
d1a39099 | 1215 | gfc_set_constant_character_len (int len, gfc_expr *expr, int check_len) |
a270dc8e | 1216 | { |
c32f863c | 1217 | gfc_char_t *s; |
a270dc8e | 1218 | int slen; |
1219 | ||
1220 | gcc_assert (expr->expr_type == EXPR_CONSTANT); | |
b44437b9 | 1221 | gcc_assert (expr->ts.type == BT_CHARACTER); |
a270dc8e | 1222 | |
1223 | slen = expr->value.character.length; | |
1224 | if (len != slen) | |
1225 | { | |
c32f863c | 1226 | s = gfc_get_wide_string (len + 1); |
1227 | memcpy (s, expr->value.character.string, | |
1228 | MIN (len, slen) * sizeof (gfc_char_t)); | |
a270dc8e | 1229 | if (len > slen) |
c32f863c | 1230 | gfc_wide_memset (&s[slen], ' ', len - slen); |
1bfea7e8 | 1231 | |
1232 | if (gfc_option.warn_character_truncation && slen > len) | |
1233 | gfc_warning_now ("CHARACTER expression at %L is being truncated " | |
1234 | "(%d/%d)", &expr->where, slen, len); | |
1235 | ||
1236 | /* Apply the standard by 'hand' otherwise it gets cleared for | |
1237 | initializers. */ | |
d1a39099 | 1238 | if (check_len != -1 && slen != check_len |
1239 | && !(gfc_option.allow_std & GFC_STD_GNU)) | |
1bfea7e8 | 1240 | gfc_error_now ("The CHARACTER elements of the array constructor " |
1241 | "at %L must have the same length (%d/%d)", | |
d1a39099 | 1242 | &expr->where, slen, check_len); |
1bfea7e8 | 1243 | |
89f528df | 1244 | s[len] = '\0'; |
434f0922 | 1245 | free (expr->value.character.string); |
a270dc8e | 1246 | expr->value.character.string = s; |
1247 | expr->value.character.length = len; | |
1248 | } | |
1249 | } | |
4ee9c684 | 1250 | |
3b6a4b41 | 1251 | |
e14bee04 | 1252 | /* Function to create and update the enumerator history |
3b6a4b41 | 1253 | using the information passed as arguments. |
e14bee04 | 1254 | Pointer "max_enum" is also updated, to point to |
1255 | enum history node containing largest initializer. | |
3b6a4b41 | 1256 | |
1257 | SYM points to the symbol node of enumerator. | |
f6d0e37a | 1258 | INIT points to its enumerator value. */ |
3b6a4b41 | 1259 | |
e14bee04 | 1260 | static void |
1a9745d2 | 1261 | create_enum_history (gfc_symbol *sym, gfc_expr *init) |
3b6a4b41 | 1262 | { |
1263 | enumerator_history *new_enum_history; | |
1264 | gcc_assert (sym != NULL && init != NULL); | |
1265 | ||
48d8ad5a | 1266 | new_enum_history = XCNEW (enumerator_history); |
3b6a4b41 | 1267 | |
1268 | new_enum_history->sym = sym; | |
1269 | new_enum_history->initializer = init; | |
1270 | new_enum_history->next = NULL; | |
1271 | ||
1272 | if (enum_history == NULL) | |
1273 | { | |
1274 | enum_history = new_enum_history; | |
1275 | max_enum = enum_history; | |
1276 | } | |
1277 | else | |
1278 | { | |
1279 | new_enum_history->next = enum_history; | |
1280 | enum_history = new_enum_history; | |
1281 | ||
e14bee04 | 1282 | if (mpz_cmp (max_enum->initializer->value.integer, |
3b6a4b41 | 1283 | new_enum_history->initializer->value.integer) < 0) |
1a9745d2 | 1284 | max_enum = new_enum_history; |
3b6a4b41 | 1285 | } |
1286 | } | |
1287 | ||
1288 | ||
e14bee04 | 1289 | /* Function to free enum kind history. */ |
3b6a4b41 | 1290 | |
e14bee04 | 1291 | void |
1a9745d2 | 1292 | gfc_free_enum_history (void) |
3b6a4b41 | 1293 | { |
e14bee04 | 1294 | enumerator_history *current = enum_history; |
1295 | enumerator_history *next; | |
3b6a4b41 | 1296 | |
1297 | while (current != NULL) | |
1298 | { | |
1299 | next = current->next; | |
434f0922 | 1300 | free (current); |
3b6a4b41 | 1301 | current = next; |
1302 | } | |
1303 | max_enum = NULL; | |
1304 | enum_history = NULL; | |
1305 | } | |
1306 | ||
1307 | ||
4ee9c684 | 1308 | /* Function called by variable_decl() that adds an initialization |
1309 | expression to a symbol. */ | |
1310 | ||
f6bb8f4b | 1311 | static gfc_try |
f6d0e37a | 1312 | add_init_expr_to_sym (const char *name, gfc_expr **initp, locus *var_locus) |
4ee9c684 | 1313 | { |
1314 | symbol_attribute attr; | |
1315 | gfc_symbol *sym; | |
1316 | gfc_expr *init; | |
1317 | ||
1318 | init = *initp; | |
36b0a1b0 | 1319 | if (find_special (name, &sym, false)) |
4ee9c684 | 1320 | return FAILURE; |
1321 | ||
1322 | attr = sym->attr; | |
1323 | ||
1324 | /* If this symbol is confirming an implicit parameter type, | |
1325 | then an initialization expression is not allowed. */ | |
1326 | if (attr.flavor == FL_PARAMETER | |
1327 | && sym->value != NULL | |
1328 | && *initp != NULL) | |
1329 | { | |
1330 | gfc_error ("Initializer not allowed for PARAMETER '%s' at %C", | |
1331 | sym->name); | |
1332 | return FAILURE; | |
1333 | } | |
1334 | ||
1335 | if (init == NULL) | |
1336 | { | |
1337 | /* An initializer is required for PARAMETER declarations. */ | |
1338 | if (attr.flavor == FL_PARAMETER) | |
1339 | { | |
1340 | gfc_error ("PARAMETER at %L is missing an initializer", var_locus); | |
1341 | return FAILURE; | |
1342 | } | |
1343 | } | |
1344 | else | |
1345 | { | |
1346 | /* If a variable appears in a DATA block, it cannot have an | |
b97f1a18 | 1347 | initializer. */ |
4ee9c684 | 1348 | if (sym->attr.data) |
1349 | { | |
1a9745d2 | 1350 | gfc_error ("Variable '%s' at %C with an initializer already " |
1351 | "appears in a DATA statement", sym->name); | |
4ee9c684 | 1352 | return FAILURE; |
1353 | } | |
1354 | ||
cca3db55 | 1355 | /* Check if the assignment can happen. This has to be put off |
23d075f4 | 1356 | until later for derived type variables and procedure pointers. */ |
4ee9c684 | 1357 | if (sym->ts.type != BT_DERIVED && init->ts.type != BT_DERIVED |
1de1b1a9 | 1358 | && sym->ts.type != BT_CLASS && init->ts.type != BT_CLASS |
23d075f4 | 1359 | && !sym->attr.proc_pointer |
4ee9c684 | 1360 | && gfc_check_assign_symbol (sym, init) == FAILURE) |
1361 | return FAILURE; | |
1362 | ||
eeebe20b | 1363 | if (sym->ts.type == BT_CHARACTER && sym->ts.u.cl |
da540712 | 1364 | && init->ts.type == BT_CHARACTER) |
a270dc8e | 1365 | { |
1366 | /* Update symbol character length according initializer. */ | |
da540712 | 1367 | if (gfc_check_assign_symbol (sym, init) == FAILURE) |
1368 | return FAILURE; | |
1369 | ||
eeebe20b | 1370 | if (sym->ts.u.cl->length == NULL) |
a270dc8e | 1371 | { |
03c2a028 | 1372 | int clen; |
f6d0e37a | 1373 | /* If there are multiple CHARACTER variables declared on the |
1374 | same line, we don't want them to share the same length. */ | |
d270ce52 | 1375 | sym->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
e9c873a4 | 1376 | |
03c2a028 | 1377 | if (sym->attr.flavor == FL_PARAMETER) |
1378 | { | |
1379 | if (init->expr_type == EXPR_CONSTANT) | |
1380 | { | |
1381 | clen = init->value.character.length; | |
126387b5 | 1382 | sym->ts.u.cl->length |
1383 | = gfc_get_int_expr (gfc_default_integer_kind, | |
1384 | NULL, clen); | |
03c2a028 | 1385 | } |
1386 | else if (init->expr_type == EXPR_ARRAY) | |
1387 | { | |
126387b5 | 1388 | gfc_constructor *c; |
1389 | c = gfc_constructor_first (init->value.constructor); | |
1390 | clen = c->expr->value.character.length; | |
1391 | sym->ts.u.cl->length | |
1392 | = gfc_get_int_expr (gfc_default_integer_kind, | |
1393 | NULL, clen); | |
03c2a028 | 1394 | } |
eeebe20b | 1395 | else if (init->ts.u.cl && init->ts.u.cl->length) |
1396 | sym->ts.u.cl->length = | |
1397 | gfc_copy_expr (sym->value->ts.u.cl->length); | |
03c2a028 | 1398 | } |
a270dc8e | 1399 | } |
1400 | /* Update initializer character length according symbol. */ | |
eeebe20b | 1401 | else if (sym->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
a270dc8e | 1402 | { |
eeebe20b | 1403 | int len = mpz_get_si (sym->ts.u.cl->length->value.integer); |
a270dc8e | 1404 | |
1405 | if (init->expr_type == EXPR_CONSTANT) | |
d1a39099 | 1406 | gfc_set_constant_character_len (len, init, -1); |
a270dc8e | 1407 | else if (init->expr_type == EXPR_ARRAY) |
1408 | { | |
126387b5 | 1409 | gfc_constructor *c; |
1410 | ||
39908fd9 | 1411 | /* Build a new charlen to prevent simplification from |
1412 | deleting the length before it is resolved. */ | |
d270ce52 | 1413 | init->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
eeebe20b | 1414 | init->ts.u.cl->length = gfc_copy_expr (sym->ts.u.cl->length); |
39908fd9 | 1415 | |
126387b5 | 1416 | for (c = gfc_constructor_first (init->value.constructor); |
1417 | c; c = gfc_constructor_next (c)) | |
1418 | gfc_set_constant_character_len (len, c->expr, -1); | |
a270dc8e | 1419 | } |
1420 | } | |
1421 | } | |
1422 | ||
ae2864a8 | 1423 | /* If sym is implied-shape, set its upper bounds from init. */ |
1424 | if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension | |
1425 | && sym->as->type == AS_IMPLIED_SHAPE) | |
1426 | { | |
1427 | int dim; | |
1428 | ||
1429 | if (init->rank == 0) | |
1430 | { | |
1431 | gfc_error ("Can't initialize implied-shape array at %L" | |
1432 | " with scalar", &sym->declared_at); | |
1433 | return FAILURE; | |
1434 | } | |
1435 | gcc_assert (sym->as->rank == init->rank); | |
1436 | ||
1437 | /* Shape should be present, we get an initialization expression. */ | |
1438 | gcc_assert (init->shape); | |
1439 | ||
1440 | for (dim = 0; dim < sym->as->rank; ++dim) | |
1441 | { | |
1442 | int k; | |
1443 | gfc_expr* lower; | |
1444 | gfc_expr* e; | |
1445 | ||
1446 | lower = sym->as->lower[dim]; | |
1447 | if (lower->expr_type != EXPR_CONSTANT) | |
1448 | { | |
1449 | gfc_error ("Non-constant lower bound in implied-shape" | |
1450 | " declaration at %L", &lower->where); | |
1451 | return FAILURE; | |
1452 | } | |
1453 | ||
1454 | /* All dimensions must be without upper bound. */ | |
1455 | gcc_assert (!sym->as->upper[dim]); | |
1456 | ||
1457 | k = lower->ts.kind; | |
1458 | e = gfc_get_constant_expr (BT_INTEGER, k, &sym->declared_at); | |
1459 | mpz_add (e->value.integer, | |
1460 | lower->value.integer, init->shape[dim]); | |
1461 | mpz_sub_ui (e->value.integer, e->value.integer, 1); | |
1462 | sym->as->upper[dim] = e; | |
1463 | } | |
1464 | ||
1465 | sym->as->type = AS_EXPLICIT; | |
1466 | } | |
1467 | ||
c5d33754 | 1468 | /* Need to check if the expression we initialized this |
1469 | to was one of the iso_c_binding named constants. If so, | |
1470 | and we're a parameter (constant), let it be iso_c. | |
1471 | For example: | |
1472 | integer(c_int), parameter :: my_int = c_int | |
1473 | integer(my_int) :: my_int_2 | |
1474 | If we mark my_int as iso_c (since we can see it's value | |
1475 | is equal to one of the named constants), then my_int_2 | |
1476 | will be considered C interoperable. */ | |
1477 | if (sym->ts.type != BT_CHARACTER && sym->ts.type != BT_DERIVED) | |
1478 | { | |
1479 | sym->ts.is_iso_c |= init->ts.is_iso_c; | |
1480 | sym->ts.is_c_interop |= init->ts.is_c_interop; | |
1481 | /* attr bits needed for module files. */ | |
1482 | sym->attr.is_iso_c |= init->ts.is_iso_c; | |
1483 | sym->attr.is_c_interop |= init->ts.is_c_interop; | |
1484 | if (init->ts.is_iso_c) | |
1485 | sym->ts.f90_type = init->ts.f90_type; | |
1486 | } | |
126387b5 | 1487 | |
4ee9c684 | 1488 | /* Add initializer. Make sure we keep the ranks sane. */ |
1489 | if (sym->attr.dimension && init->rank == 0) | |
7baa3fb4 | 1490 | { |
1491 | mpz_t size; | |
1492 | gfc_expr *array; | |
7baa3fb4 | 1493 | int n; |
1494 | if (sym->attr.flavor == FL_PARAMETER | |
1495 | && init->expr_type == EXPR_CONSTANT | |
1496 | && spec_size (sym->as, &size) == SUCCESS | |
1497 | && mpz_cmp_si (size, 0) > 0) | |
1498 | { | |
126387b5 | 1499 | array = gfc_get_array_expr (init->ts.type, init->ts.kind, |
1500 | &init->where); | |
7baa3fb4 | 1501 | for (n = 0; n < (int)mpz_get_si (size); n++) |
126387b5 | 1502 | gfc_constructor_append_expr (&array->value.constructor, |
1503 | n == 0 | |
1504 | ? init | |
1505 | : gfc_copy_expr (init), | |
1506 | &init->where); | |
1507 | ||
7baa3fb4 | 1508 | array->shape = gfc_get_shape (sym->as->rank); |
1509 | for (n = 0; n < sym->as->rank; n++) | |
1510 | spec_dimen_size (sym->as, n, &array->shape[n]); | |
1511 | ||
1512 | init = array; | |
1513 | mpz_clear (size); | |
1514 | } | |
1515 | init->rank = sym->as->rank; | |
1516 | } | |
4ee9c684 | 1517 | |
1518 | sym->value = init; | |
3cd3c667 | 1519 | if (sym->attr.save == SAVE_NONE) |
1520 | sym->attr.save = SAVE_IMPLICIT; | |
4ee9c684 | 1521 | *initp = NULL; |
1522 | } | |
1523 | ||
1524 | return SUCCESS; | |
1525 | } | |
1526 | ||
1527 | ||
1528 | /* Function called by variable_decl() that adds a name to a structure | |
1529 | being built. */ | |
1530 | ||
f6bb8f4b | 1531 | static gfc_try |
1a9745d2 | 1532 | build_struct (const char *name, gfc_charlen *cl, gfc_expr **init, |
1533 | gfc_array_spec **as) | |
4ee9c684 | 1534 | { |
1535 | gfc_component *c; | |
b3704193 | 1536 | gfc_try t = SUCCESS; |
4ee9c684 | 1537 | |
53d2e124 | 1538 | /* F03:C438/C439. If the current symbol is of the same derived type that we're |
4ee9c684 | 1539 | constructing, it must have the pointer attribute. */ |
53d2e124 | 1540 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
eeebe20b | 1541 | && current_ts.u.derived == gfc_current_block () |
4ee9c684 | 1542 | && current_attr.pointer == 0) |
1543 | { | |
1544 | gfc_error ("Component at %C must have the POINTER attribute"); | |
1545 | return FAILURE; | |
1546 | } | |
1547 | ||
1a9745d2 | 1548 | if (gfc_current_block ()->attr.pointer && (*as)->rank != 0) |
4ee9c684 | 1549 | { |
1550 | if ((*as)->type != AS_DEFERRED && (*as)->type != AS_EXPLICIT) | |
1551 | { | |
1552 | gfc_error ("Array component of structure at %C must have explicit " | |
1553 | "or deferred shape"); | |
1554 | return FAILURE; | |
1555 | } | |
1556 | } | |
1557 | ||
1558 | if (gfc_add_component (gfc_current_block (), name, &c) == FAILURE) | |
1559 | return FAILURE; | |
1560 | ||
1561 | c->ts = current_ts; | |
eeebe20b | 1562 | if (c->ts.type == BT_CHARACTER) |
1563 | c->ts.u.cl = cl; | |
3be2b8d5 | 1564 | c->attr = current_attr; |
4ee9c684 | 1565 | |
1566 | c->initializer = *init; | |
1567 | *init = NULL; | |
1568 | ||
1569 | c->as = *as; | |
1570 | if (c->as != NULL) | |
aff518b0 | 1571 | { |
1572 | if (c->as->corank) | |
1573 | c->attr.codimension = 1; | |
1574 | if (c->as->rank) | |
1575 | c->attr.dimension = 1; | |
1576 | } | |
4ee9c684 | 1577 | *as = NULL; |
1578 | ||
a2f51d5f | 1579 | /* Should this ever get more complicated, combine with similar section |
1580 | in add_init_expr_to_sym into a separate function. */ | |
2d76519f | 1581 | if (c->ts.type == BT_CHARACTER && !c->attr.pointer && c->initializer |
1582 | && c->ts.u.cl | |
eeebe20b | 1583 | && c->ts.u.cl->length && c->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
a2f51d5f | 1584 | { |
d1a39099 | 1585 | int len; |
1586 | ||
eeebe20b | 1587 | gcc_assert (c->ts.u.cl && c->ts.u.cl->length); |
1588 | gcc_assert (c->ts.u.cl->length->expr_type == EXPR_CONSTANT); | |
1589 | gcc_assert (c->ts.u.cl->length->ts.type == BT_INTEGER); | |
d1a39099 | 1590 | |
eeebe20b | 1591 | len = mpz_get_si (c->ts.u.cl->length->value.integer); |
a2f51d5f | 1592 | |
1593 | if (c->initializer->expr_type == EXPR_CONSTANT) | |
d1a39099 | 1594 | gfc_set_constant_character_len (len, c->initializer, -1); |
eeebe20b | 1595 | else if (mpz_cmp (c->ts.u.cl->length->value.integer, |
1596 | c->initializer->ts.u.cl->length->value.integer)) | |
a2f51d5f | 1597 | { |
126387b5 | 1598 | gfc_constructor *ctor; |
1599 | ctor = gfc_constructor_first (c->initializer->value.constructor); | |
d1a39099 | 1600 | |
6e4faf80 | 1601 | if (ctor) |
d1a39099 | 1602 | { |
6e4faf80 | 1603 | int first_len; |
126387b5 | 1604 | bool has_ts = (c->initializer->ts.u.cl |
1605 | && c->initializer->ts.u.cl->length_from_typespec); | |
6e4faf80 | 1606 | |
1607 | /* Remember the length of the first element for checking | |
1608 | that all elements *in the constructor* have the same | |
1609 | length. This need not be the length of the LHS! */ | |
1610 | gcc_assert (ctor->expr->expr_type == EXPR_CONSTANT); | |
1611 | gcc_assert (ctor->expr->ts.type == BT_CHARACTER); | |
1612 | first_len = ctor->expr->value.character.length; | |
1613 | ||
126387b5 | 1614 | for ( ; ctor; ctor = gfc_constructor_next (ctor)) |
1615 | if (ctor->expr->expr_type == EXPR_CONSTANT) | |
d1a39099 | 1616 | { |
126387b5 | 1617 | gfc_set_constant_character_len (len, ctor->expr, |
1618 | has_ts ? -1 : first_len); | |
1619 | ctor->expr->ts.u.cl->length = gfc_copy_expr (c->ts.u.cl->length); | |
d1a39099 | 1620 | } |
d1a39099 | 1621 | } |
a2f51d5f | 1622 | } |
1623 | } | |
1624 | ||
4ee9c684 | 1625 | /* Check array components. */ |
3be2b8d5 | 1626 | if (!c->attr.dimension) |
b3704193 | 1627 | goto scalar; |
4ee9c684 | 1628 | |
3be2b8d5 | 1629 | if (c->attr.pointer) |
4ee9c684 | 1630 | { |
1631 | if (c->as->type != AS_DEFERRED) | |
1632 | { | |
2294b616 | 1633 | gfc_error ("Pointer array component of structure at %C must have a " |
1634 | "deferred shape"); | |
b3704193 | 1635 | t = FAILURE; |
2294b616 | 1636 | } |
1637 | } | |
3be2b8d5 | 1638 | else if (c->attr.allocatable) |
2294b616 | 1639 | { |
1640 | if (c->as->type != AS_DEFERRED) | |
1641 | { | |
1642 | gfc_error ("Allocatable component of structure at %C must have a " | |
1643 | "deferred shape"); | |
b3704193 | 1644 | t = FAILURE; |
4ee9c684 | 1645 | } |
1646 | } | |
1647 | else | |
1648 | { | |
1649 | if (c->as->type != AS_EXPLICIT) | |
1650 | { | |
1a9745d2 | 1651 | gfc_error ("Array component of structure at %C must have an " |
1652 | "explicit shape"); | |
b3704193 | 1653 | t = FAILURE; |
4ee9c684 | 1654 | } |
1655 | } | |
1656 | ||
b3704193 | 1657 | scalar: |
1658 | if (c->ts.type == BT_CLASS) | |
d9c9afea | 1659 | { |
1660 | bool delayed = (gfc_state_stack->sym == c->ts.u.derived) | |
1661 | || (!c->ts.u.derived->components | |
1662 | && !c->ts.u.derived->attr.zero_comp); | |
431a19be | 1663 | gfc_try t2 = gfc_build_class_symbol (&c->ts, &c->attr, &c->as, delayed); |
1664 | ||
1665 | if (t != FAILURE) | |
1666 | t = t2; | |
d9c9afea | 1667 | } |
1668 | ||
b3704193 | 1669 | return t; |
4ee9c684 | 1670 | } |
1671 | ||
1672 | ||
1673 | /* Match a 'NULL()', and possibly take care of some side effects. */ | |
1674 | ||
1675 | match | |
1a9745d2 | 1676 | gfc_match_null (gfc_expr **result) |
4ee9c684 | 1677 | { |
1678 | gfc_symbol *sym; | |
4ee9c684 | 1679 | match m; |
1680 | ||
1681 | m = gfc_match (" null ( )"); | |
1682 | if (m != MATCH_YES) | |
1683 | return m; | |
1684 | ||
1685 | /* The NULL symbol now has to be/become an intrinsic function. */ | |
1686 | if (gfc_get_symbol ("null", NULL, &sym)) | |
1687 | { | |
1688 | gfc_error ("NULL() initialization at %C is ambiguous"); | |
1689 | return MATCH_ERROR; | |
1690 | } | |
1691 | ||
1692 | gfc_intrinsic_symbol (sym); | |
1693 | ||
1694 | if (sym->attr.proc != PROC_INTRINSIC | |
950683ed | 1695 | && (gfc_add_procedure (&sym->attr, PROC_INTRINSIC, |
1696 | sym->name, NULL) == FAILURE | |
1697 | || gfc_add_function (&sym->attr, sym->name, NULL) == FAILURE)) | |
4ee9c684 | 1698 | return MATCH_ERROR; |
1699 | ||
126387b5 | 1700 | *result = gfc_get_null_expr (&gfc_current_locus); |
4ee9c684 | 1701 | |
1702 | return MATCH_YES; | |
1703 | } | |
1704 | ||
1705 | ||
23d075f4 | 1706 | /* Match the initialization expr for a data pointer or procedure pointer. */ |
1707 | ||
1708 | static match | |
1709 | match_pointer_init (gfc_expr **init, int procptr) | |
1710 | { | |
1711 | match m; | |
1712 | ||
1713 | if (gfc_pure (NULL) && gfc_state_stack->state != COMP_DERIVED) | |
1714 | { | |
1715 | gfc_error ("Initialization of pointer at %C is not allowed in " | |
1716 | "a PURE procedure"); | |
1717 | return MATCH_ERROR; | |
1718 | } | |
1719 | ||
df084314 | 1720 | /* Match NULL() initialization. */ |
23d075f4 | 1721 | m = gfc_match_null (init); |
1722 | if (m != MATCH_NO) | |
1723 | return m; | |
1724 | ||
1725 | /* Match non-NULL initialization. */ | |
f3efaada | 1726 | gfc_matching_ptr_assignment = !procptr; |
23d075f4 | 1727 | gfc_matching_procptr_assignment = procptr; |
1728 | m = gfc_match_rvalue (init); | |
f3efaada | 1729 | gfc_matching_ptr_assignment = 0; |
23d075f4 | 1730 | gfc_matching_procptr_assignment = 0; |
1731 | if (m == MATCH_ERROR) | |
1732 | return MATCH_ERROR; | |
1733 | else if (m == MATCH_NO) | |
1734 | { | |
1735 | gfc_error ("Error in pointer initialization at %C"); | |
1736 | return MATCH_ERROR; | |
1737 | } | |
1738 | ||
1739 | if (!procptr) | |
1740 | gfc_resolve_expr (*init); | |
1741 | ||
f25dbbf7 | 1742 | if (gfc_notify_std (GFC_STD_F2008, "non-NULL pointer " |
23d075f4 | 1743 | "initialization at %C") == FAILURE) |
1744 | return MATCH_ERROR; | |
1745 | ||
1746 | return MATCH_YES; | |
1747 | } | |
1748 | ||
1749 | ||
f3e89339 | 1750 | static gfc_try |
1751 | check_function_name (char *name) | |
1752 | { | |
1753 | /* In functions that have a RESULT variable defined, the function name always | |
1754 | refers to function calls. Therefore, the name is not allowed to appear in | |
1755 | specification statements. When checking this, be careful about | |
1756 | 'hidden' procedure pointer results ('ppr@'). */ | |
1757 | ||
1758 | if (gfc_current_state () == COMP_FUNCTION) | |
1759 | { | |
1760 | gfc_symbol *block = gfc_current_block (); | |
1761 | if (block && block->result && block->result != block | |
1762 | && strcmp (block->result->name, "ppr@") != 0 | |
1763 | && strcmp (block->name, name) == 0) | |
1764 | { | |
1765 | gfc_error ("Function name '%s' not allowed at %C", name); | |
1766 | return FAILURE; | |
1767 | } | |
1768 | } | |
1769 | ||
1770 | return SUCCESS; | |
1771 | } | |
1772 | ||
1773 | ||
4ee9c684 | 1774 | /* Match a variable name with an optional initializer. When this |
1775 | subroutine is called, a variable is expected to be parsed next. | |
1776 | Depending on what is happening at the moment, updates either the | |
1777 | symbol table or the current interface. */ | |
1778 | ||
1779 | static match | |
3923b69f | 1780 | variable_decl (int elem) |
4ee9c684 | 1781 | { |
1782 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
1783 | gfc_expr *initializer, *char_len; | |
1784 | gfc_array_spec *as; | |
b549d2a5 | 1785 | gfc_array_spec *cp_as; /* Extra copy for Cray Pointees. */ |
4ee9c684 | 1786 | gfc_charlen *cl; |
3e715c81 | 1787 | bool cl_deferred; |
4ee9c684 | 1788 | locus var_locus; |
1789 | match m; | |
f6bb8f4b | 1790 | gfc_try t; |
b549d2a5 | 1791 | gfc_symbol *sym; |
4ee9c684 | 1792 | |
1793 | initializer = NULL; | |
1794 | as = NULL; | |
b549d2a5 | 1795 | cp_as = NULL; |
4ee9c684 | 1796 | |
1797 | /* When we get here, we've just matched a list of attributes and | |
1798 | maybe a type and a double colon. The next thing we expect to see | |
1799 | is the name of the symbol. */ | |
1800 | m = gfc_match_name (name); | |
1801 | if (m != MATCH_YES) | |
1802 | goto cleanup; | |
1803 | ||
cbb9e6aa | 1804 | var_locus = gfc_current_locus; |
4ee9c684 | 1805 | |
1806 | /* Now we could see the optional array spec. or character length. */ | |
aff518b0 | 1807 | m = gfc_match_array_spec (&as, true, true); |
eae6c6c1 | 1808 | if (m == MATCH_ERROR) |
4ee9c684 | 1809 | goto cleanup; |
3b6a4b41 | 1810 | |
4ee9c684 | 1811 | if (m == MATCH_NO) |
1812 | as = gfc_copy_array_spec (current_as); | |
e97ac7c0 | 1813 | else if (current_as) |
1814 | merge_array_spec (current_as, as, true); | |
4ee9c684 | 1815 | |
eae6c6c1 | 1816 | if (gfc_option.flag_cray_pointer) |
1817 | cp_as = gfc_copy_array_spec (as); | |
1818 | ||
ae2864a8 | 1819 | /* At this point, we know for sure if the symbol is PARAMETER and can thus |
1820 | determine (and check) whether it can be implied-shape. If it | |
1821 | was parsed as assumed-size, change it because PARAMETERs can not | |
1822 | be assumed-size. */ | |
1823 | if (as) | |
1824 | { | |
1825 | if (as->type == AS_IMPLIED_SHAPE && current_attr.flavor != FL_PARAMETER) | |
1826 | { | |
1827 | m = MATCH_ERROR; | |
1828 | gfc_error ("Non-PARAMETER symbol '%s' at %L can't be implied-shape", | |
1829 | name, &var_locus); | |
1830 | goto cleanup; | |
1831 | } | |
1832 | ||
1833 | if (as->type == AS_ASSUMED_SIZE && as->rank == 1 | |
1834 | && current_attr.flavor == FL_PARAMETER) | |
1835 | as->type = AS_IMPLIED_SHAPE; | |
1836 | ||
1837 | if (as->type == AS_IMPLIED_SHAPE | |
1838 | && gfc_notify_std (GFC_STD_F2008, | |
f25dbbf7 | 1839 | "Implied-shape array at %L", |
ae2864a8 | 1840 | &var_locus) == FAILURE) |
1841 | { | |
1842 | m = MATCH_ERROR; | |
1843 | goto cleanup; | |
1844 | } | |
1845 | } | |
1846 | ||
4ee9c684 | 1847 | char_len = NULL; |
1848 | cl = NULL; | |
3e715c81 | 1849 | cl_deferred = false; |
4ee9c684 | 1850 | |
1851 | if (current_ts.type == BT_CHARACTER) | |
1852 | { | |
926b8757 | 1853 | switch (match_char_length (&char_len, &cl_deferred, false)) |
4ee9c684 | 1854 | { |
1855 | case MATCH_YES: | |
d270ce52 | 1856 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
4ee9c684 | 1857 | |
1858 | cl->length = char_len; | |
1859 | break; | |
1860 | ||
3923b69f | 1861 | /* Non-constant lengths need to be copied after the first |
04b61f60 | 1862 | element. Also copy assumed lengths. */ |
4ee9c684 | 1863 | case MATCH_NO: |
04b61f60 | 1864 | if (elem > 1 |
eeebe20b | 1865 | && (current_ts.u.cl->length == NULL |
1866 | || current_ts.u.cl->length->expr_type != EXPR_CONSTANT)) | |
3923b69f | 1867 | { |
d270ce52 | 1868 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
eeebe20b | 1869 | cl->length = gfc_copy_expr (current_ts.u.cl->length); |
3923b69f | 1870 | } |
1871 | else | |
eeebe20b | 1872 | cl = current_ts.u.cl; |
3923b69f | 1873 | |
3e715c81 | 1874 | cl_deferred = current_ts.deferred; |
1875 | ||
4ee9c684 | 1876 | break; |
1877 | ||
1878 | case MATCH_ERROR: | |
1879 | goto cleanup; | |
1880 | } | |
1881 | } | |
1882 | ||
b549d2a5 | 1883 | /* If this symbol has already shown up in a Cray Pointer declaration, |
f6d0e37a | 1884 | then we want to set the type & bail out. */ |
b549d2a5 | 1885 | if (gfc_option.flag_cray_pointer) |
1886 | { | |
1887 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
1888 | if (sym != NULL && sym->attr.cray_pointee) | |
1889 | { | |
1890 | sym->ts.type = current_ts.type; | |
1891 | sym->ts.kind = current_ts.kind; | |
eeebe20b | 1892 | sym->ts.u.cl = cl; |
1893 | sym->ts.u.derived = current_ts.u.derived; | |
c5d33754 | 1894 | sym->ts.is_c_interop = current_ts.is_c_interop; |
1895 | sym->ts.is_iso_c = current_ts.is_iso_c; | |
b549d2a5 | 1896 | m = MATCH_YES; |
1897 | ||
1898 | /* Check to see if we have an array specification. */ | |
1899 | if (cp_as != NULL) | |
1900 | { | |
1901 | if (sym->as != NULL) | |
1902 | { | |
7698a624 | 1903 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
b549d2a5 | 1904 | gfc_free_array_spec (cp_as); |
1905 | m = MATCH_ERROR; | |
1906 | goto cleanup; | |
1907 | } | |
1908 | else | |
1909 | { | |
1910 | if (gfc_set_array_spec (sym, cp_as, &var_locus) == FAILURE) | |
1911 | gfc_internal_error ("Couldn't set pointee array spec."); | |
e14bee04 | 1912 | |
b549d2a5 | 1913 | /* Fix the array spec. */ |
e14bee04 | 1914 | m = gfc_mod_pointee_as (sym->as); |
b549d2a5 | 1915 | if (m == MATCH_ERROR) |
1916 | goto cleanup; | |
1917 | } | |
e14bee04 | 1918 | } |
b549d2a5 | 1919 | goto cleanup; |
1920 | } | |
1921 | else | |
1922 | { | |
1923 | gfc_free_array_spec (cp_as); | |
1924 | } | |
1925 | } | |
e14bee04 | 1926 | |
1e057e9b | 1927 | /* Procedure pointer as function result. */ |
1928 | if (gfc_current_state () == COMP_FUNCTION | |
1929 | && strcmp ("ppr@", gfc_current_block ()->name) == 0 | |
1930 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) == 0) | |
1931 | strcpy (name, "ppr@"); | |
1932 | ||
1933 | if (gfc_current_state () == COMP_FUNCTION | |
1934 | && strcmp (name, gfc_current_block ()->name) == 0 | |
1935 | && gfc_current_block ()->result | |
1936 | && strcmp ("ppr@", gfc_current_block ()->result->name) == 0) | |
1937 | strcpy (name, "ppr@"); | |
e14bee04 | 1938 | |
4ee9c684 | 1939 | /* OK, we've successfully matched the declaration. Now put the |
1940 | symbol in the current namespace, because it might be used in the | |
fe06c0d5 | 1941 | optional initialization expression for this symbol, e.g. this is |
4ee9c684 | 1942 | perfectly legal: |
1943 | ||
1944 | integer, parameter :: i = huge(i) | |
1945 | ||
1946 | This is only true for parameters or variables of a basic type. | |
1947 | For components of derived types, it is not true, so we don't | |
1948 | create a symbol for those yet. If we fail to create the symbol, | |
1949 | bail out. */ | |
1950 | if (gfc_current_state () != COMP_DERIVED | |
3e715c81 | 1951 | && build_sym (name, cl, cl_deferred, &as, &var_locus) == FAILURE) |
4ee9c684 | 1952 | { |
b8a51d79 | 1953 | m = MATCH_ERROR; |
1954 | goto cleanup; | |
1955 | } | |
1956 | ||
60fbbf9e | 1957 | /* An interface body specifies all of the procedure's |
1958 | characteristics and these shall be consistent with those | |
1959 | specified in the procedure definition, except that the interface | |
1960 | may specify a procedure that is not pure if the procedure is | |
1961 | defined to be pure(12.3.2). */ | |
71c22dfb | 1962 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
1a9745d2 | 1963 | && gfc_current_ns->proc_name |
1964 | && gfc_current_ns->proc_name->attr.if_source == IFSRC_IFBODY | |
eeebe20b | 1965 | && current_ts.u.derived->ns != gfc_current_ns) |
c723595c | 1966 | { |
1967 | gfc_symtree *st; | |
eeebe20b | 1968 | st = gfc_find_symtree (gfc_current_ns->sym_root, current_ts.u.derived->name); |
1969 | if (!(current_ts.u.derived->attr.imported | |
c723595c | 1970 | && st != NULL |
c2958b6b | 1971 | && gfc_find_dt_in_generic (st->n.sym) == current_ts.u.derived) |
c723595c | 1972 | && !gfc_current_ns->has_import_set) |
1973 | { | |
c2958b6b | 1974 | gfc_error ("The type of '%s' at %C has not been declared within the " |
c723595c | 1975 | "interface", name); |
1976 | m = MATCH_ERROR; | |
1977 | goto cleanup; | |
1978 | } | |
4ee9c684 | 1979 | } |
f3e89339 | 1980 | |
1981 | if (check_function_name (name) == FAILURE) | |
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 | { | |
f25dbbf7 | 1998 | if (gfc_notify_std (GFC_STD_GNU, "Old-style " |
b4f45d02 | 1999 | "initialization at %C") == FAILURE) |
2000 | return MATCH_ERROR; | |
e14bee04 | 2001 | |
b4f45d02 | 2002 | return match_old_style_init (name); |
2003 | } | |
2004 | ||
4ee9c684 | 2005 | /* The double colon must be present in order to have initializers. |
2006 | Otherwise the statement is ambiguous with an assignment statement. */ | |
2007 | if (colon_seen) | |
2008 | { | |
2009 | if (gfc_match (" =>") == MATCH_YES) | |
2010 | { | |
4ee9c684 | 2011 | if (!current_attr.pointer) |
2012 | { | |
2013 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
2014 | m = MATCH_ERROR; | |
2015 | goto cleanup; | |
2016 | } | |
2017 | ||
23d075f4 | 2018 | m = match_pointer_init (&initializer, 0); |
4ee9c684 | 2019 | if (m != MATCH_YES) |
2020 | goto cleanup; | |
4ee9c684 | 2021 | } |
2022 | else if (gfc_match_char ('=') == MATCH_YES) | |
2023 | { | |
2024 | if (current_attr.pointer) | |
2025 | { | |
1a9745d2 | 2026 | gfc_error ("Pointer initialization at %C requires '=>', " |
2027 | "not '='"); | |
4ee9c684 | 2028 | m = MATCH_ERROR; |
2029 | goto cleanup; | |
2030 | } | |
2031 | ||
2032 | m = gfc_match_init_expr (&initializer); | |
2033 | if (m == MATCH_NO) | |
2034 | { | |
2035 | gfc_error ("Expected an initialization expression at %C"); | |
2036 | m = MATCH_ERROR; | |
2037 | } | |
2038 | ||
b3a420c5 | 2039 | if (current_attr.flavor != FL_PARAMETER && gfc_pure (NULL) |
2040 | && gfc_state_stack->state != COMP_DERIVED) | |
4ee9c684 | 2041 | { |
1a9745d2 | 2042 | gfc_error ("Initialization of variable at %C is not allowed in " |
2043 | "a PURE procedure"); | |
4ee9c684 | 2044 | m = MATCH_ERROR; |
2045 | } | |
2046 | ||
2047 | if (m != MATCH_YES) | |
2048 | goto cleanup; | |
2049 | } | |
8ffad0f9 | 2050 | } |
2051 | ||
2294b616 | 2052 | if (initializer != NULL && current_attr.allocatable |
2053 | && gfc_current_state () == COMP_DERIVED) | |
2054 | { | |
1a9745d2 | 2055 | gfc_error ("Initialization of allocatable component at %C is not " |
2056 | "allowed"); | |
2294b616 | 2057 | m = MATCH_ERROR; |
2058 | goto cleanup; | |
2059 | } | |
2060 | ||
d9b3f26b | 2061 | /* Add the initializer. Note that it is fine if initializer is |
4ee9c684 | 2062 | NULL here, because we sometimes also need to check if a |
2063 | declaration *must* have an initialization expression. */ | |
2064 | if (gfc_current_state () != COMP_DERIVED) | |
2065 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
2066 | else | |
d9b3f26b | 2067 | { |
2294b616 | 2068 | if (current_ts.type == BT_DERIVED |
1a9745d2 | 2069 | && !current_attr.pointer && !initializer) |
d9b3f26b | 2070 | initializer = gfc_default_initializer (¤t_ts); |
2071 | t = build_struct (name, cl, &initializer, &as); | |
2072 | } | |
4ee9c684 | 2073 | |
2074 | m = (t == SUCCESS) ? MATCH_YES : MATCH_ERROR; | |
2075 | ||
2076 | cleanup: | |
2077 | /* Free stuff up and return. */ | |
2078 | gfc_free_expr (initializer); | |
2079 | gfc_free_array_spec (as); | |
2080 | ||
2081 | return m; | |
2082 | } | |
2083 | ||
2084 | ||
d10f89ee | 2085 | /* Match an extended-f77 "TYPESPEC*bytesize"-style kind specification. |
2086 | This assumes that the byte size is equal to the kind number for | |
2087 | non-COMPLEX types, and equal to twice the kind number for COMPLEX. */ | |
4ee9c684 | 2088 | |
2089 | match | |
1a9745d2 | 2090 | gfc_match_old_kind_spec (gfc_typespec *ts) |
4ee9c684 | 2091 | { |
2092 | match m; | |
3bd3b616 | 2093 | int original_kind; |
4ee9c684 | 2094 | |
2095 | if (gfc_match_char ('*') != MATCH_YES) | |
2096 | return MATCH_NO; | |
2097 | ||
3bd3b616 | 2098 | m = gfc_match_small_literal_int (&ts->kind, NULL); |
4ee9c684 | 2099 | if (m != MATCH_YES) |
2100 | return MATCH_ERROR; | |
2101 | ||
b118a35b | 2102 | original_kind = ts->kind; |
2103 | ||
4ee9c684 | 2104 | /* Massage the kind numbers for complex types. */ |
b118a35b | 2105 | if (ts->type == BT_COMPLEX) |
2106 | { | |
2107 | if (ts->kind % 2) | |
1a9745d2 | 2108 | { |
2109 | gfc_error ("Old-style type declaration %s*%d not supported at %C", | |
2110 | gfc_basic_typename (ts->type), original_kind); | |
2111 | return MATCH_ERROR; | |
2112 | } | |
b118a35b | 2113 | ts->kind /= 2; |
2d76519f | 2114 | |
2115 | } | |
2116 | ||
2117 | if (ts->type == BT_INTEGER && ts->kind == 4 && gfc_option.flag_integer4_kind == 8) | |
2118 | ts->kind = 8; | |
2119 | ||
2120 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2121 | { | |
2122 | if (ts->kind == 4) | |
2123 | { | |
2124 | if (gfc_option.flag_real4_kind == 8) | |
2125 | ts->kind = 8; | |
2126 | if (gfc_option.flag_real4_kind == 10) | |
2127 | ts->kind = 10; | |
2128 | if (gfc_option.flag_real4_kind == 16) | |
2129 | ts->kind = 16; | |
2130 | } | |
2131 | ||
2132 | if (ts->kind == 8) | |
2133 | { | |
2134 | if (gfc_option.flag_real8_kind == 4) | |
2135 | ts->kind = 4; | |
2136 | if (gfc_option.flag_real8_kind == 10) | |
2137 | ts->kind = 10; | |
2138 | if (gfc_option.flag_real8_kind == 16) | |
2139 | ts->kind = 16; | |
2140 | } | |
b118a35b | 2141 | } |
4ee9c684 | 2142 | |
f2d4ef3b | 2143 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
4ee9c684 | 2144 | { |
b118a35b | 2145 | gfc_error ("Old-style type declaration %s*%d not supported at %C", |
1a9745d2 | 2146 | gfc_basic_typename (ts->type), original_kind); |
4ee9c684 | 2147 | return MATCH_ERROR; |
2148 | } | |
2149 | ||
be7f01a1 | 2150 | if (gfc_notify_std (GFC_STD_GNU, "Nonstandard type declaration %s*%d at %C", |
2151 | gfc_basic_typename (ts->type), original_kind) == FAILURE) | |
2152 | return MATCH_ERROR; | |
2153 | ||
4ee9c684 | 2154 | return MATCH_YES; |
2155 | } | |
2156 | ||
2157 | ||
2158 | /* Match a kind specification. Since kinds are generally optional, we | |
2159 | usually return MATCH_NO if something goes wrong. If a "kind=" | |
2160 | string is found, then we know we have an error. */ | |
2161 | ||
2162 | match | |
67a51c8e | 2163 | gfc_match_kind_spec (gfc_typespec *ts, bool kind_expr_only) |
4ee9c684 | 2164 | { |
67a51c8e | 2165 | locus where, loc; |
4ee9c684 | 2166 | gfc_expr *e; |
2167 | match m, n; | |
c632ff3d | 2168 | char c; |
4ee9c684 | 2169 | const char *msg; |
2170 | ||
2171 | m = MATCH_NO; | |
67a51c8e | 2172 | n = MATCH_YES; |
4ee9c684 | 2173 | e = NULL; |
2174 | ||
67a51c8e | 2175 | where = loc = gfc_current_locus; |
2176 | ||
2177 | if (kind_expr_only) | |
2178 | goto kind_expr; | |
4ee9c684 | 2179 | |
2180 | if (gfc_match_char ('(') == MATCH_NO) | |
2181 | return MATCH_NO; | |
2182 | ||
2183 | /* Also gobbles optional text. */ | |
2184 | if (gfc_match (" kind = ") == MATCH_YES) | |
2185 | m = MATCH_ERROR; | |
2186 | ||
67a51c8e | 2187 | loc = gfc_current_locus; |
2188 | ||
2189 | kind_expr: | |
4ee9c684 | 2190 | n = gfc_match_init_expr (&e); |
67a51c8e | 2191 | |
4ee9c684 | 2192 | if (n != MATCH_YES) |
67a51c8e | 2193 | { |
077932f9 | 2194 | if (gfc_matching_function) |
67a51c8e | 2195 | { |
077932f9 | 2196 | /* The function kind expression might include use associated or |
2197 | imported parameters and try again after the specification | |
2198 | expressions..... */ | |
67a51c8e | 2199 | if (gfc_match_char (')') != MATCH_YES) |
2200 | { | |
2201 | gfc_error ("Missing right parenthesis at %C"); | |
2202 | m = MATCH_ERROR; | |
2203 | goto no_match; | |
2204 | } | |
2205 | ||
2206 | gfc_free_expr (e); | |
67a51c8e | 2207 | gfc_undo_symbols (); |
2208 | return MATCH_YES; | |
2209 | } | |
2210 | else | |
2211 | { | |
2212 | /* ....or else, the match is real. */ | |
2213 | if (n == MATCH_NO) | |
2214 | gfc_error ("Expected initialization expression at %C"); | |
2215 | if (n != MATCH_YES) | |
2216 | return MATCH_ERROR; | |
2217 | } | |
2218 | } | |
4ee9c684 | 2219 | |
2220 | if (e->rank != 0) | |
2221 | { | |
2222 | gfc_error ("Expected scalar initialization expression at %C"); | |
2223 | m = MATCH_ERROR; | |
2224 | goto no_match; | |
2225 | } | |
2226 | ||
2227 | msg = gfc_extract_int (e, &ts->kind); | |
077932f9 | 2228 | |
4ee9c684 | 2229 | if (msg != NULL) |
2230 | { | |
2231 | gfc_error (msg); | |
2232 | m = MATCH_ERROR; | |
2233 | goto no_match; | |
2234 | } | |
2235 | ||
c5d33754 | 2236 | /* Before throwing away the expression, let's see if we had a |
2237 | C interoperable kind (and store the fact). */ | |
2238 | if (e->ts.is_c_interop == 1) | |
2239 | { | |
df084314 | 2240 | /* Mark this as C interoperable if being declared with one |
c5d33754 | 2241 | of the named constants from iso_c_binding. */ |
2242 | ts->is_c_interop = e->ts.is_iso_c; | |
2243 | ts->f90_type = e->ts.f90_type; | |
2244 | } | |
2245 | ||
4ee9c684 | 2246 | gfc_free_expr (e); |
2247 | e = NULL; | |
2248 | ||
c5d33754 | 2249 | /* Ignore errors to this point, if we've gotten here. This means |
2250 | we ignore the m=MATCH_ERROR from above. */ | |
f2d4ef3b | 2251 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
4ee9c684 | 2252 | { |
2253 | gfc_error ("Kind %d not supported for type %s at %C", ts->kind, | |
2254 | gfc_basic_typename (ts->type)); | |
c632ff3d | 2255 | gfc_current_locus = where; |
2256 | return MATCH_ERROR; | |
4ee9c684 | 2257 | } |
c632ff3d | 2258 | |
209d3778 | 2259 | /* Warn if, e.g., c_int is used for a REAL variable, but not |
2260 | if, e.g., c_double is used for COMPLEX as the standard | |
2261 | explicitly says that the kind type parameter for complex and real | |
2262 | variable is the same, i.e. c_float == c_float_complex. */ | |
2263 | if (ts->f90_type != BT_UNKNOWN && ts->f90_type != ts->type | |
2264 | && !((ts->f90_type == BT_REAL && ts->type == BT_COMPLEX) | |
2265 | || (ts->f90_type == BT_COMPLEX && ts->type == BT_REAL))) | |
ded233a6 | 2266 | gfc_warning_now ("C kind type parameter is for type %s but type at %L " |
2267 | "is %s", gfc_basic_typename (ts->f90_type), &where, | |
2268 | gfc_basic_typename (ts->type)); | |
209d3778 | 2269 | |
c632ff3d | 2270 | gfc_gobble_whitespace (); |
e0be6f02 | 2271 | if ((c = gfc_next_ascii_char ()) != ')' |
2272 | && (ts->type != BT_CHARACTER || c != ',')) | |
4ee9c684 | 2273 | { |
c632ff3d | 2274 | if (ts->type == BT_CHARACTER) |
2275 | gfc_error ("Missing right parenthesis or comma at %C"); | |
2276 | else | |
2277 | gfc_error ("Missing right parenthesis at %C"); | |
67a51c8e | 2278 | m = MATCH_ERROR; |
4ee9c684 | 2279 | } |
c5d33754 | 2280 | else |
2281 | /* All tests passed. */ | |
2282 | m = MATCH_YES; | |
4ee9c684 | 2283 | |
c5d33754 | 2284 | if(m == MATCH_ERROR) |
2285 | gfc_current_locus = where; | |
2d76519f | 2286 | |
2287 | if (ts->type == BT_INTEGER && ts->kind == 4 && gfc_option.flag_integer4_kind == 8) | |
2288 | ts->kind = 8; | |
2289 | ||
2290 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2291 | { | |
2292 | if (ts->kind == 4) | |
2293 | { | |
2294 | if (gfc_option.flag_real4_kind == 8) | |
2295 | ts->kind = 8; | |
2296 | if (gfc_option.flag_real4_kind == 10) | |
2297 | ts->kind = 10; | |
2298 | if (gfc_option.flag_real4_kind == 16) | |
2299 | ts->kind = 16; | |
2300 | } | |
2301 | ||
2302 | if (ts->kind == 8) | |
2303 | { | |
2304 | if (gfc_option.flag_real8_kind == 4) | |
2305 | ts->kind = 4; | |
2306 | if (gfc_option.flag_real8_kind == 10) | |
2307 | ts->kind = 10; | |
2308 | if (gfc_option.flag_real8_kind == 16) | |
2309 | ts->kind = 16; | |
2310 | } | |
2311 | } | |
2312 | ||
c5d33754 | 2313 | /* Return what we know from the test(s). */ |
2314 | return m; | |
4ee9c684 | 2315 | |
2316 | no_match: | |
2317 | gfc_free_expr (e); | |
cbb9e6aa | 2318 | gfc_current_locus = where; |
4ee9c684 | 2319 | return m; |
2320 | } | |
2321 | ||
2322 | ||
33399208 | 2323 | static match |
2324 | match_char_kind (int * kind, int * is_iso_c) | |
2325 | { | |
2326 | locus where; | |
2327 | gfc_expr *e; | |
2328 | match m, n; | |
2329 | const char *msg; | |
2330 | ||
2331 | m = MATCH_NO; | |
2332 | e = NULL; | |
2333 | where = gfc_current_locus; | |
2334 | ||
2335 | n = gfc_match_init_expr (&e); | |
c632ff3d | 2336 | |
077932f9 | 2337 | if (n != MATCH_YES && gfc_matching_function) |
c632ff3d | 2338 | { |
077932f9 | 2339 | /* The expression might include use-associated or imported |
2340 | parameters and try again after the specification | |
2341 | expressions. */ | |
c632ff3d | 2342 | gfc_free_expr (e); |
c632ff3d | 2343 | gfc_undo_symbols (); |
2344 | return MATCH_YES; | |
2345 | } | |
2346 | ||
33399208 | 2347 | if (n == MATCH_NO) |
2348 | gfc_error ("Expected initialization expression at %C"); | |
2349 | if (n != MATCH_YES) | |
2350 | return MATCH_ERROR; | |
2351 | ||
2352 | if (e->rank != 0) | |
2353 | { | |
2354 | gfc_error ("Expected scalar initialization expression at %C"); | |
2355 | m = MATCH_ERROR; | |
2356 | goto no_match; | |
2357 | } | |
2358 | ||
2359 | msg = gfc_extract_int (e, kind); | |
2360 | *is_iso_c = e->ts.is_iso_c; | |
2361 | if (msg != NULL) | |
2362 | { | |
2363 | gfc_error (msg); | |
2364 | m = MATCH_ERROR; | |
2365 | goto no_match; | |
2366 | } | |
2367 | ||
2368 | gfc_free_expr (e); | |
2369 | ||
2370 | /* Ignore errors to this point, if we've gotten here. This means | |
2371 | we ignore the m=MATCH_ERROR from above. */ | |
2372 | if (gfc_validate_kind (BT_CHARACTER, *kind, true) < 0) | |
2373 | { | |
2374 | gfc_error ("Kind %d is not supported for CHARACTER at %C", *kind); | |
2375 | m = MATCH_ERROR; | |
2376 | } | |
2377 | else | |
2378 | /* All tests passed. */ | |
2379 | m = MATCH_YES; | |
2380 | ||
2381 | if (m == MATCH_ERROR) | |
2382 | gfc_current_locus = where; | |
2383 | ||
2384 | /* Return what we know from the test(s). */ | |
2385 | return m; | |
2386 | ||
2387 | no_match: | |
2388 | gfc_free_expr (e); | |
2389 | gfc_current_locus = where; | |
2390 | return m; | |
2391 | } | |
2392 | ||
10f5dcc0 | 2393 | |
4ee9c684 | 2394 | /* Match the various kind/length specifications in a CHARACTER |
2395 | declaration. We don't return MATCH_NO. */ | |
2396 | ||
10f5dcc0 | 2397 | match |
2398 | gfc_match_char_spec (gfc_typespec *ts) | |
4ee9c684 | 2399 | { |
33399208 | 2400 | int kind, seen_length, is_iso_c; |
4ee9c684 | 2401 | gfc_charlen *cl; |
2402 | gfc_expr *len; | |
2403 | match m; | |
3e715c81 | 2404 | bool deferred; |
33399208 | 2405 | |
4ee9c684 | 2406 | len = NULL; |
2407 | seen_length = 0; | |
33399208 | 2408 | kind = 0; |
2409 | is_iso_c = 0; | |
3e715c81 | 2410 | deferred = false; |
4ee9c684 | 2411 | |
2412 | /* Try the old-style specification first. */ | |
2413 | old_char_selector = 0; | |
2414 | ||
926b8757 | 2415 | m = match_char_length (&len, &deferred, true); |
4ee9c684 | 2416 | if (m != MATCH_NO) |
2417 | { | |
2418 | if (m == MATCH_YES) | |
2419 | old_char_selector = 1; | |
2420 | seen_length = 1; | |
2421 | goto done; | |
2422 | } | |
2423 | ||
2424 | m = gfc_match_char ('('); | |
2425 | if (m != MATCH_YES) | |
2426 | { | |
c5d33754 | 2427 | m = MATCH_YES; /* Character without length is a single char. */ |
4ee9c684 | 2428 | goto done; |
2429 | } | |
2430 | ||
c5d33754 | 2431 | /* Try the weird case: ( KIND = <int> [ , LEN = <len-param> ] ). */ |
4ee9c684 | 2432 | if (gfc_match (" kind =") == MATCH_YES) |
2433 | { | |
33399208 | 2434 | m = match_char_kind (&kind, &is_iso_c); |
c5d33754 | 2435 | |
4ee9c684 | 2436 | if (m == MATCH_ERROR) |
2437 | goto done; | |
2438 | if (m == MATCH_NO) | |
2439 | goto syntax; | |
2440 | ||
2441 | if (gfc_match (" , len =") == MATCH_NO) | |
2442 | goto rparen; | |
2443 | ||
3e715c81 | 2444 | m = char_len_param_value (&len, &deferred); |
4ee9c684 | 2445 | if (m == MATCH_NO) |
2446 | goto syntax; | |
2447 | if (m == MATCH_ERROR) | |
2448 | goto done; | |
2449 | seen_length = 1; | |
2450 | ||
2451 | goto rparen; | |
2452 | } | |
2453 | ||
f6d0e37a | 2454 | /* Try to match "LEN = <len-param>" or "LEN = <len-param>, KIND = <int>". */ |
4ee9c684 | 2455 | if (gfc_match (" len =") == MATCH_YES) |
2456 | { | |
3e715c81 | 2457 | m = char_len_param_value (&len, &deferred); |
4ee9c684 | 2458 | if (m == MATCH_NO) |
2459 | goto syntax; | |
2460 | if (m == MATCH_ERROR) | |
2461 | goto done; | |
2462 | seen_length = 1; | |
2463 | ||
2464 | if (gfc_match_char (')') == MATCH_YES) | |
2465 | goto done; | |
2466 | ||
2467 | if (gfc_match (" , kind =") != MATCH_YES) | |
2468 | goto syntax; | |
2469 | ||
33399208 | 2470 | if (match_char_kind (&kind, &is_iso_c) == MATCH_ERROR) |
2471 | goto done; | |
4ee9c684 | 2472 | |
2473 | goto rparen; | |
2474 | } | |
2475 | ||
f6d0e37a | 2476 | /* Try to match ( <len-param> ) or ( <len-param> , [ KIND = ] <int> ). */ |
3e715c81 | 2477 | m = char_len_param_value (&len, &deferred); |
4ee9c684 | 2478 | if (m == MATCH_NO) |
2479 | goto syntax; | |
2480 | if (m == MATCH_ERROR) | |
2481 | goto done; | |
2482 | seen_length = 1; | |
2483 | ||
2484 | m = gfc_match_char (')'); | |
2485 | if (m == MATCH_YES) | |
2486 | goto done; | |
2487 | ||
2488 | if (gfc_match_char (',') != MATCH_YES) | |
2489 | goto syntax; | |
2490 | ||
c5d33754 | 2491 | gfc_match (" kind ="); /* Gobble optional text. */ |
4ee9c684 | 2492 | |
33399208 | 2493 | m = match_char_kind (&kind, &is_iso_c); |
4ee9c684 | 2494 | if (m == MATCH_ERROR) |
2495 | goto done; | |
2496 | if (m == MATCH_NO) | |
2497 | goto syntax; | |
2498 | ||
2499 | rparen: | |
2500 | /* Require a right-paren at this point. */ | |
2501 | m = gfc_match_char (')'); | |
2502 | if (m == MATCH_YES) | |
2503 | goto done; | |
2504 | ||
2505 | syntax: | |
2506 | gfc_error ("Syntax error in CHARACTER declaration at %C"); | |
2507 | m = MATCH_ERROR; | |
a3cbe8cc | 2508 | gfc_free_expr (len); |
2509 | return m; | |
4ee9c684 | 2510 | |
2511 | done: | |
8d39570e | 2512 | /* Deal with character functions after USE and IMPORT statements. */ |
2513 | if (gfc_matching_function) | |
077932f9 | 2514 | { |
8d39570e | 2515 | gfc_free_expr (len); |
077932f9 | 2516 | gfc_undo_symbols (); |
2517 | return MATCH_YES; | |
2518 | } | |
2519 | ||
4ee9c684 | 2520 | if (m != MATCH_YES) |
2521 | { | |
2522 | gfc_free_expr (len); | |
2523 | return m; | |
2524 | } | |
2525 | ||
2526 | /* Do some final massaging of the length values. */ | |
d270ce52 | 2527 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
4ee9c684 | 2528 | |
2529 | if (seen_length == 0) | |
126387b5 | 2530 | cl->length = gfc_get_int_expr (gfc_default_integer_kind, NULL, 1); |
4ee9c684 | 2531 | else |
2fe2caa6 | 2532 | cl->length = len; |
4ee9c684 | 2533 | |
eeebe20b | 2534 | ts->u.cl = cl; |
33399208 | 2535 | ts->kind = kind == 0 ? gfc_default_character_kind : kind; |
3e715c81 | 2536 | ts->deferred = deferred; |
4ee9c684 | 2537 | |
df084314 | 2538 | /* We have to know if it was a C interoperable kind so we can |
c5d33754 | 2539 | do accurate type checking of bind(c) procs, etc. */ |
33399208 | 2540 | if (kind != 0) |
df084314 | 2541 | /* Mark this as C interoperable if being declared with one |
33399208 | 2542 | of the named constants from iso_c_binding. */ |
2543 | ts->is_c_interop = is_iso_c; | |
c5d33754 | 2544 | else if (len != NULL) |
33399208 | 2545 | /* Here, we might have parsed something such as: character(c_char) |
2546 | In this case, the parsing code above grabs the c_char when | |
2547 | looking for the length (line 1690, roughly). it's the last | |
2548 | testcase for parsing the kind params of a character variable. | |
2549 | However, it's not actually the length. this seems like it | |
2550 | could be an error. | |
2551 | To see if the user used a C interop kind, test the expr | |
2552 | of the so called length, and see if it's C interoperable. */ | |
2553 | ts->is_c_interop = len->ts.is_iso_c; | |
c5d33754 | 2554 | |
4ee9c684 | 2555 | return MATCH_YES; |
2556 | } | |
2557 | ||
2558 | ||
e8152f13 | 2559 | /* Matches a declaration-type-spec (F03:R502). If successful, sets the ts |
2560 | structure to the matched specification. This is necessary for FUNCTION and | |
4ee9c684 | 2561 | IMPLICIT statements. |
2562 | ||
e14bee04 | 2563 | If implicit_flag is nonzero, then we don't check for the optional |
39351103 | 2564 | kind specification. Not doing so is needed for matching an IMPLICIT |
4ee9c684 | 2565 | statement correctly. */ |
2566 | ||
67a51c8e | 2567 | match |
e8152f13 | 2568 | gfc_match_decl_type_spec (gfc_typespec *ts, int implicit_flag) |
4ee9c684 | 2569 | { |
2570 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c2958b6b | 2571 | gfc_symbol *sym, *dt_sym; |
4ee9c684 | 2572 | match m; |
e0be6f02 | 2573 | char c; |
f446fb22 | 2574 | bool seen_deferred_kind, matched_type; |
c2958b6b | 2575 | const char *dt_name; |
4ee9c684 | 2576 | |
077932f9 | 2577 | /* A belt and braces check that the typespec is correctly being treated |
2578 | as a deferred characteristic association. */ | |
2579 | seen_deferred_kind = (gfc_current_state () == COMP_FUNCTION) | |
8d39570e | 2580 | && (gfc_current_block ()->result->ts.kind == -1) |
2581 | && (ts->kind == -1); | |
4ee9c684 | 2582 | gfc_clear_ts (ts); |
077932f9 | 2583 | if (seen_deferred_kind) |
2584 | ts->kind = -1; | |
4ee9c684 | 2585 | |
c5d33754 | 2586 | /* Clear the current binding label, in case one is given. */ |
7b2060ba | 2587 | curr_binding_label = NULL; |
c5d33754 | 2588 | |
25b29122 | 2589 | if (gfc_match (" byte") == MATCH_YES) |
2590 | { | |
f25dbbf7 | 2591 | if (gfc_notify_std (GFC_STD_GNU, "BYTE type at %C") |
25b29122 | 2592 | == FAILURE) |
2593 | return MATCH_ERROR; | |
2594 | ||
2595 | if (gfc_validate_kind (BT_INTEGER, 1, true) < 0) | |
2596 | { | |
2597 | gfc_error ("BYTE type used at %C " | |
2598 | "is not available on the target machine"); | |
2599 | return MATCH_ERROR; | |
2600 | } | |
e14bee04 | 2601 | |
25b29122 | 2602 | ts->type = BT_INTEGER; |
2603 | ts->kind = 1; | |
2604 | return MATCH_YES; | |
2605 | } | |
2606 | ||
f446fb22 | 2607 | |
8c2d8d6d | 2608 | m = gfc_match (" type ("); |
f446fb22 | 2609 | matched_type = (m == MATCH_YES); |
8c2d8d6d | 2610 | if (matched_type) |
2611 | { | |
2612 | gfc_gobble_whitespace (); | |
2613 | if (gfc_peek_ascii_char () == '*') | |
2614 | { | |
2615 | if ((m = gfc_match ("*)")) != MATCH_YES) | |
2616 | return m; | |
2617 | if (gfc_current_state () == COMP_DERIVED) | |
2618 | { | |
2619 | gfc_error ("Assumed type at %C is not allowed for components"); | |
2620 | return MATCH_ERROR; | |
2621 | } | |
f25dbbf7 | 2622 | if (gfc_notify_std (GFC_STD_F2008_TS, "Assumed type " |
8c2d8d6d | 2623 | "at %C") == FAILURE) |
2624 | return MATCH_ERROR; | |
2625 | ts->type = BT_ASSUMED; | |
2626 | return MATCH_YES; | |
2627 | } | |
2628 | ||
2629 | m = gfc_match ("%n", name); | |
2630 | matched_type = (m == MATCH_YES); | |
2631 | } | |
2632 | ||
f446fb22 | 2633 | if ((matched_type && strcmp ("integer", name) == 0) |
2634 | || (!matched_type && gfc_match (" integer") == MATCH_YES)) | |
4ee9c684 | 2635 | { |
2636 | ts->type = BT_INTEGER; | |
b8a891cb | 2637 | ts->kind = gfc_default_integer_kind; |
4ee9c684 | 2638 | goto get_kind; |
2639 | } | |
2640 | ||
f446fb22 | 2641 | if ((matched_type && strcmp ("character", name) == 0) |
2642 | || (!matched_type && gfc_match (" character") == MATCH_YES)) | |
4ee9c684 | 2643 | { |
f446fb22 | 2644 | if (matched_type |
f25dbbf7 | 2645 | && gfc_notify_std (GFC_STD_F2008, "TYPE with " |
f446fb22 | 2646 | "intrinsic-type-spec at %C") == FAILURE) |
2647 | return MATCH_ERROR; | |
2648 | ||
4ee9c684 | 2649 | ts->type = BT_CHARACTER; |
39351103 | 2650 | if (implicit_flag == 0) |
f446fb22 | 2651 | m = gfc_match_char_spec (ts); |
39351103 | 2652 | else |
f446fb22 | 2653 | m = MATCH_YES; |
2654 | ||
2655 | if (matched_type && m == MATCH_YES && gfc_match_char (')') != MATCH_YES) | |
2656 | m = MATCH_ERROR; | |
2657 | ||
2658 | return m; | |
4ee9c684 | 2659 | } |
2660 | ||
f446fb22 | 2661 | if ((matched_type && strcmp ("real", name) == 0) |
2662 | || (!matched_type && gfc_match (" real") == MATCH_YES)) | |
4ee9c684 | 2663 | { |
2664 | ts->type = BT_REAL; | |
b8a891cb | 2665 | ts->kind = gfc_default_real_kind; |
4ee9c684 | 2666 | goto get_kind; |
2667 | } | |
2668 | ||
f446fb22 | 2669 | if ((matched_type |
2670 | && (strcmp ("doubleprecision", name) == 0 | |
2671 | || (strcmp ("double", name) == 0 | |
2672 | && gfc_match (" precision") == MATCH_YES))) | |
2673 | || (!matched_type && gfc_match (" double precision") == MATCH_YES)) | |
4ee9c684 | 2674 | { |
f446fb22 | 2675 | if (matched_type |
f25dbbf7 | 2676 | && gfc_notify_std (GFC_STD_F2008, "TYPE with " |
f446fb22 | 2677 | "intrinsic-type-spec at %C") == FAILURE) |
2678 | return MATCH_ERROR; | |
2679 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
2680 | return MATCH_ERROR; | |
2681 | ||
4ee9c684 | 2682 | ts->type = BT_REAL; |
b8a891cb | 2683 | ts->kind = gfc_default_double_kind; |
4ee9c684 | 2684 | return MATCH_YES; |
2685 | } | |
2686 | ||
f446fb22 | 2687 | if ((matched_type && strcmp ("complex", name) == 0) |
2688 | || (!matched_type && gfc_match (" complex") == MATCH_YES)) | |
4ee9c684 | 2689 | { |
2690 | ts->type = BT_COMPLEX; | |
b8a891cb | 2691 | ts->kind = gfc_default_complex_kind; |
4ee9c684 | 2692 | goto get_kind; |
2693 | } | |
2694 | ||
f446fb22 | 2695 | if ((matched_type |
2696 | && (strcmp ("doublecomplex", name) == 0 | |
2697 | || (strcmp ("double", name) == 0 | |
2698 | && gfc_match (" complex") == MATCH_YES))) | |
2699 | || (!matched_type && gfc_match (" double complex") == MATCH_YES)) | |
4ee9c684 | 2700 | { |
f25dbbf7 | 2701 | if (gfc_notify_std (GFC_STD_GNU, "DOUBLE COMPLEX at %C") |
f446fb22 | 2702 | == FAILURE) |
2703 | return MATCH_ERROR; | |
2704 | ||
2705 | if (matched_type | |
f25dbbf7 | 2706 | && gfc_notify_std (GFC_STD_F2008, "TYPE with " |
f446fb22 | 2707 | "intrinsic-type-spec at %C") == FAILURE) |
2708 | return MATCH_ERROR; | |
2709 | ||
2710 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
be7f01a1 | 2711 | return MATCH_ERROR; |
2712 | ||
4ee9c684 | 2713 | ts->type = BT_COMPLEX; |
b8a891cb | 2714 | ts->kind = gfc_default_double_kind; |
4ee9c684 | 2715 | return MATCH_YES; |
2716 | } | |
2717 | ||
f446fb22 | 2718 | if ((matched_type && strcmp ("logical", name) == 0) |
2719 | || (!matched_type && gfc_match (" logical") == MATCH_YES)) | |
4ee9c684 | 2720 | { |
2721 | ts->type = BT_LOGICAL; | |
b8a891cb | 2722 | ts->kind = gfc_default_logical_kind; |
4ee9c684 | 2723 | goto get_kind; |
2724 | } | |
2725 | ||
f446fb22 | 2726 | if (matched_type) |
2727 | m = gfc_match_char (')'); | |
2728 | ||
1de1b1a9 | 2729 | if (m == MATCH_YES) |
2730 | ts->type = BT_DERIVED; | |
2731 | else | |
8ca7f89c | 2732 | { |
fa102e56 | 2733 | /* Match CLASS declarations. */ |
2734 | m = gfc_match (" class ( * )"); | |
2735 | if (m == MATCH_ERROR) | |
2736 | return MATCH_ERROR; | |
2737 | else if (m == MATCH_YES) | |
2738 | { | |
2739 | gfc_fatal_error ("Unlimited polymorphism at %C not yet supported"); | |
2740 | return MATCH_ERROR; | |
2741 | } | |
2742 | ||
8ca7f89c | 2743 | m = gfc_match (" class ( %n )", name); |
2744 | if (m != MATCH_YES) | |
2745 | return m; | |
1de1b1a9 | 2746 | ts->type = BT_CLASS; |
8ca7f89c | 2747 | |
f25dbbf7 | 2748 | if (gfc_notify_std (GFC_STD_F2003, "CLASS statement at %C") |
e8152f13 | 2749 | == FAILURE) |
2750 | return MATCH_ERROR; | |
8ca7f89c | 2751 | } |
4ee9c684 | 2752 | |
077932f9 | 2753 | /* Defer association of the derived type until the end of the |
2754 | specification block. However, if the derived type can be | |
2755 | found, add it to the typespec. */ | |
2756 | if (gfc_matching_function) | |
67a51c8e | 2757 | { |
eeebe20b | 2758 | ts->u.derived = NULL; |
077932f9 | 2759 | if (gfc_current_state () != COMP_INTERFACE |
2760 | && !gfc_find_symbol (name, NULL, 1, &sym) && sym) | |
c2958b6b | 2761 | { |
2762 | sym = gfc_find_dt_in_generic (sym); | |
2763 | ts->u.derived = sym; | |
2764 | } | |
67a51c8e | 2765 | return MATCH_YES; |
2766 | } | |
2767 | ||
2768 | /* Search for the name but allow the components to be defined later. If | |
2769 | type = -1, this typespec has been seen in a function declaration but | |
c2958b6b | 2770 | the type could not be accessed at that point. The actual derived type is |
df084314 | 2771 | stored in a symtree with the first letter of the name capitalized; the |
c2958b6b | 2772 | symtree with the all lower-case name contains the associated |
2773 | generic function. */ | |
2774 | dt_name = gfc_get_string ("%c%s", | |
2775 | (char) TOUPPER ((unsigned char) name[0]), | |
2776 | (const char*)&name[1]); | |
077932f9 | 2777 | sym = NULL; |
c2958b6b | 2778 | dt_sym = NULL; |
2779 | if (ts->kind != -1) | |
4ee9c684 | 2780 | { |
c2958b6b | 2781 | gfc_get_ha_symbol (name, &sym); |
2782 | if (sym->generic && gfc_find_symbol (dt_name, NULL, 0, &dt_sym)) | |
2783 | { | |
2784 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
2785 | return MATCH_ERROR; | |
2786 | } | |
2787 | if (sym->generic && !dt_sym) | |
2788 | dt_sym = gfc_find_dt_in_generic (sym); | |
4ee9c684 | 2789 | } |
67a51c8e | 2790 | else if (ts->kind == -1) |
2791 | { | |
077932f9 | 2792 | int iface = gfc_state_stack->previous->state != COMP_INTERFACE |
2793 | || gfc_current_ns->has_import_set; | |
c2958b6b | 2794 | gfc_find_symbol (name, NULL, iface, &sym); |
2795 | if (sym && sym->generic && gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
67a51c8e | 2796 | { |
2797 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
2798 | return MATCH_ERROR; | |
2799 | } | |
c2958b6b | 2800 | if (sym && sym->generic && !dt_sym) |
2801 | dt_sym = gfc_find_dt_in_generic (sym); | |
67a51c8e | 2802 | |
077932f9 | 2803 | ts->kind = 0; |
67a51c8e | 2804 | if (sym == NULL) |
2805 | return MATCH_NO; | |
2806 | } | |
4ee9c684 | 2807 | |
c2958b6b | 2808 | if ((sym->attr.flavor != FL_UNKNOWN |
2809 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.generic)) | |
2810 | || sym->attr.subroutine) | |
2811 | { | |
2812 | gfc_error ("Type name '%s' at %C conflicts with previously declared " | |
2813 | "entity at %L, which has the same name", name, | |
2814 | &sym->declared_at); | |
2815 | return MATCH_ERROR; | |
2816 | } | |
4ee9c684 | 2817 | |
077932f9 | 2818 | gfc_set_sym_referenced (sym); |
c2958b6b | 2819 | if (!sym->attr.generic |
2820 | && gfc_add_generic (&sym->attr, sym->name, NULL) == FAILURE) | |
2821 | return MATCH_ERROR; | |
2822 | ||
2823 | if (!sym->attr.function | |
2824 | && gfc_add_function (&sym->attr, sym->name, NULL) == FAILURE) | |
2825 | return MATCH_ERROR; | |
2826 | ||
2827 | if (!dt_sym) | |
2828 | { | |
2829 | gfc_interface *intr, *head; | |
2830 | ||
2831 | /* Use upper case to save the actual derived-type symbol. */ | |
2832 | gfc_get_symbol (dt_name, NULL, &dt_sym); | |
2833 | dt_sym->name = gfc_get_string (sym->name); | |
2834 | head = sym->generic; | |
2835 | intr = gfc_get_interface (); | |
2836 | intr->sym = dt_sym; | |
2837 | intr->where = gfc_current_locus; | |
2838 | intr->next = head; | |
2839 | sym->generic = intr; | |
2840 | sym->attr.if_source = IFSRC_DECL; | |
2841 | } | |
2842 | ||
2843 | gfc_set_sym_referenced (dt_sym); | |
2844 | ||
2845 | if (dt_sym->attr.flavor != FL_DERIVED | |
2846 | && gfc_add_flavor (&dt_sym->attr, FL_DERIVED, sym->name, NULL) | |
2847 | == FAILURE) | |
2848 | return MATCH_ERROR; | |
2849 | ||
2850 | ts->u.derived = dt_sym; | |
4ee9c684 | 2851 | |
2852 | return MATCH_YES; | |
2853 | ||
2854 | get_kind: | |
f446fb22 | 2855 | if (matched_type |
f25dbbf7 | 2856 | && gfc_notify_std (GFC_STD_F2008, "TYPE with " |
f446fb22 | 2857 | "intrinsic-type-spec at %C") == FAILURE) |
2858 | return MATCH_ERROR; | |
2859 | ||
4ee9c684 | 2860 | /* For all types except double, derived and character, look for an |
2861 | optional kind specifier. MATCH_NO is actually OK at this point. */ | |
39351103 | 2862 | if (implicit_flag == 1) |
f446fb22 | 2863 | { |
2864 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
2865 | return MATCH_ERROR; | |
2866 | ||
2867 | return MATCH_YES; | |
2868 | } | |
4ee9c684 | 2869 | |
18f3698a | 2870 | if (gfc_current_form == FORM_FREE) |
2871 | { | |
2c89e2a0 | 2872 | c = gfc_peek_ascii_char (); |
2873 | if (!gfc_is_whitespace (c) && c != '*' && c != '(' | |
1a9745d2 | 2874 | && c != ':' && c != ',') |
f446fb22 | 2875 | { |
2876 | if (matched_type && c == ')') | |
2877 | { | |
2878 | gfc_next_ascii_char (); | |
2879 | return MATCH_YES; | |
2880 | } | |
2881 | return MATCH_NO; | |
2882 | } | |
18f3698a | 2883 | } |
2884 | ||
67a51c8e | 2885 | m = gfc_match_kind_spec (ts, false); |
4ee9c684 | 2886 | if (m == MATCH_NO && ts->type != BT_CHARACTER) |
2887 | m = gfc_match_old_kind_spec (ts); | |
2888 | ||
f446fb22 | 2889 | if (matched_type && gfc_match_char (')') != MATCH_YES) |
2890 | return MATCH_ERROR; | |
2891 | ||
077932f9 | 2892 | /* Defer association of the KIND expression of function results |
2893 | until after USE and IMPORT statements. */ | |
2894 | if ((gfc_current_state () == COMP_NONE && gfc_error_flag_test ()) | |
2895 | || gfc_matching_function) | |
2896 | return MATCH_YES; | |
2897 | ||
4ee9c684 | 2898 | if (m == MATCH_NO) |
2899 | m = MATCH_YES; /* No kind specifier found. */ | |
2900 | ||
2901 | return m; | |
2902 | } | |
2903 | ||
2904 | ||
39351103 | 2905 | /* Match an IMPLICIT NONE statement. Actually, this statement is |
2906 | already matched in parse.c, or we would not end up here in the | |
2907 | first place. So the only thing we need to check, is if there is | |
2908 | trailing garbage. If not, the match is successful. */ | |
2909 | ||
2910 | match | |
2911 | gfc_match_implicit_none (void) | |
2912 | { | |
39351103 | 2913 | return (gfc_match_eos () == MATCH_YES) ? MATCH_YES : MATCH_NO; |
2914 | } | |
2915 | ||
2916 | ||
2917 | /* Match the letter range(s) of an IMPLICIT statement. */ | |
2918 | ||
2919 | static match | |
b70528c7 | 2920 | match_implicit_range (void) |
39351103 | 2921 | { |
e0be6f02 | 2922 | char c, c1, c2; |
2923 | int inner; | |
39351103 | 2924 | locus cur_loc; |
2925 | ||
2926 | cur_loc = gfc_current_locus; | |
2927 | ||
2928 | gfc_gobble_whitespace (); | |
e0be6f02 | 2929 | c = gfc_next_ascii_char (); |
39351103 | 2930 | if (c != '(') |
2931 | { | |
2932 | gfc_error ("Missing character range in IMPLICIT at %C"); | |
2933 | goto bad; | |
2934 | } | |
2935 | ||
2936 | inner = 1; | |
2937 | while (inner) | |
2938 | { | |
2939 | gfc_gobble_whitespace (); | |
e0be6f02 | 2940 | c1 = gfc_next_ascii_char (); |
39351103 | 2941 | if (!ISALPHA (c1)) |
2942 | goto bad; | |
2943 | ||
2944 | gfc_gobble_whitespace (); | |
e0be6f02 | 2945 | c = gfc_next_ascii_char (); |
39351103 | 2946 | |
2947 | switch (c) | |
2948 | { | |
2949 | case ')': | |
f6d0e37a | 2950 | inner = 0; /* Fall through. */ |
39351103 | 2951 | |
2952 | case ',': | |
2953 | c2 = c1; | |
2954 | break; | |
2955 | ||
2956 | case '-': | |
2957 | gfc_gobble_whitespace (); | |
e0be6f02 | 2958 | c2 = gfc_next_ascii_char (); |
39351103 | 2959 | if (!ISALPHA (c2)) |
2960 | goto bad; | |
2961 | ||
2962 | gfc_gobble_whitespace (); | |
e0be6f02 | 2963 | c = gfc_next_ascii_char (); |
39351103 | 2964 | |
2965 | if ((c != ',') && (c != ')')) | |
2966 | goto bad; | |
2967 | if (c == ')') | |
2968 | inner = 0; | |
2969 | ||
2970 | break; | |
2971 | ||
2972 | default: | |
2973 | goto bad; | |
2974 | } | |
2975 | ||
2976 | if (c1 > c2) | |
2977 | { | |
2978 | gfc_error ("Letters must be in alphabetic order in " | |
2979 | "IMPLICIT statement at %C"); | |
2980 | goto bad; | |
2981 | } | |
2982 | ||
2983 | /* See if we can add the newly matched range to the pending | |
1a9745d2 | 2984 | implicits from this IMPLICIT statement. We do not check for |
2985 | conflicts with whatever earlier IMPLICIT statements may have | |
2986 | set. This is done when we've successfully finished matching | |
2987 | the current one. */ | |
b70528c7 | 2988 | if (gfc_add_new_implicit_range (c1, c2) != SUCCESS) |
39351103 | 2989 | goto bad; |
2990 | } | |
2991 | ||
2992 | return MATCH_YES; | |
2993 | ||
2994 | bad: | |
2995 | gfc_syntax_error (ST_IMPLICIT); | |
2996 | ||
2997 | gfc_current_locus = cur_loc; | |
2998 | return MATCH_ERROR; | |
2999 | } | |
3000 | ||
3001 | ||
3002 | /* Match an IMPLICIT statement, storing the types for | |
3003 | gfc_set_implicit() if the statement is accepted by the parser. | |
3004 | There is a strange looking, but legal syntactic construction | |
3005 | possible. It looks like: | |
3006 | ||
3007 | IMPLICIT INTEGER (a-b) (c-d) | |
3008 | ||
3009 | This is legal if "a-b" is a constant expression that happens to | |
3010 | equal one of the legal kinds for integers. The real problem | |
3011 | happens with an implicit specification that looks like: | |
3012 | ||
3013 | IMPLICIT INTEGER (a-b) | |
3014 | ||
3015 | In this case, a typespec matcher that is "greedy" (as most of the | |
3016 | matchers are) gobbles the character range as a kindspec, leaving | |
3017 | nothing left. We therefore have to go a bit more slowly in the | |
3018 | matching process by inhibiting the kindspec checking during | |
3019 | typespec matching and checking for a kind later. */ | |
3020 | ||
3021 | match | |
3022 | gfc_match_implicit (void) | |
3023 | { | |
3024 | gfc_typespec ts; | |
3025 | locus cur_loc; | |
e0be6f02 | 3026 | char c; |
39351103 | 3027 | match m; |
3028 | ||
52179f31 | 3029 | gfc_clear_ts (&ts); |
3030 | ||
39351103 | 3031 | /* We don't allow empty implicit statements. */ |
3032 | if (gfc_match_eos () == MATCH_YES) | |
3033 | { | |
3034 | gfc_error ("Empty IMPLICIT statement at %C"); | |
3035 | return MATCH_ERROR; | |
3036 | } | |
3037 | ||
39351103 | 3038 | do |
3039 | { | |
b70528c7 | 3040 | /* First cleanup. */ |
3041 | gfc_clear_new_implicit (); | |
3042 | ||
39351103 | 3043 | /* A basic type is mandatory here. */ |
e8152f13 | 3044 | m = gfc_match_decl_type_spec (&ts, 1); |
39351103 | 3045 | if (m == MATCH_ERROR) |
3046 | goto error; | |
3047 | if (m == MATCH_NO) | |
3048 | goto syntax; | |
3049 | ||
3050 | cur_loc = gfc_current_locus; | |
b70528c7 | 3051 | m = match_implicit_range (); |
39351103 | 3052 | |
3053 | if (m == MATCH_YES) | |
3054 | { | |
b70528c7 | 3055 | /* We may have <TYPE> (<RANGE>). */ |
39351103 | 3056 | gfc_gobble_whitespace (); |
e0be6f02 | 3057 | c = gfc_next_ascii_char (); |
39351103 | 3058 | if ((c == '\n') || (c == ',')) |
b70528c7 | 3059 | { |
3060 | /* Check for CHARACTER with no length parameter. */ | |
eeebe20b | 3061 | if (ts.type == BT_CHARACTER && !ts.u.cl) |
b70528c7 | 3062 | { |
b8a891cb | 3063 | ts.kind = gfc_default_character_kind; |
d270ce52 | 3064 | ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
126387b5 | 3065 | ts.u.cl->length = gfc_get_int_expr (gfc_default_integer_kind, |
3066 | NULL, 1); | |
b70528c7 | 3067 | } |
3068 | ||
3069 | /* Record the Successful match. */ | |
3070 | if (gfc_merge_new_implicit (&ts) != SUCCESS) | |
3071 | return MATCH_ERROR; | |
3072 | continue; | |
3073 | } | |
39351103 | 3074 | |
3075 | gfc_current_locus = cur_loc; | |
3076 | } | |
3077 | ||
b70528c7 | 3078 | /* Discard the (incorrectly) matched range. */ |
3079 | gfc_clear_new_implicit (); | |
3080 | ||
3081 | /* Last chance -- check <TYPE> <SELECTOR> (<RANGE>). */ | |
3082 | if (ts.type == BT_CHARACTER) | |
10f5dcc0 | 3083 | m = gfc_match_char_spec (&ts); |
b70528c7 | 3084 | else |
39351103 | 3085 | { |
67a51c8e | 3086 | m = gfc_match_kind_spec (&ts, false); |
39351103 | 3087 | if (m == MATCH_NO) |
b70528c7 | 3088 | { |
3089 | m = gfc_match_old_kind_spec (&ts); | |
3090 | if (m == MATCH_ERROR) | |
3091 | goto error; | |
3092 | if (m == MATCH_NO) | |
3093 | goto syntax; | |
3094 | } | |
39351103 | 3095 | } |
b70528c7 | 3096 | if (m == MATCH_ERROR) |
3097 | goto error; | |
39351103 | 3098 | |
b70528c7 | 3099 | m = match_implicit_range (); |
39351103 | 3100 | if (m == MATCH_ERROR) |
3101 | goto error; | |
3102 | if (m == MATCH_NO) | |
3103 | goto syntax; | |
3104 | ||
3105 | gfc_gobble_whitespace (); | |
e0be6f02 | 3106 | c = gfc_next_ascii_char (); |
39351103 | 3107 | if ((c != '\n') && (c != ',')) |
3108 | goto syntax; | |
3109 | ||
b70528c7 | 3110 | if (gfc_merge_new_implicit (&ts) != SUCCESS) |
3111 | return MATCH_ERROR; | |
39351103 | 3112 | } |
3113 | while (c == ','); | |
3114 | ||
b70528c7 | 3115 | return MATCH_YES; |
39351103 | 3116 | |
3117 | syntax: | |
3118 | gfc_syntax_error (ST_IMPLICIT); | |
3119 | ||
3120 | error: | |
3121 | return MATCH_ERROR; | |
3122 | } | |
3123 | ||
f6d0e37a | 3124 | |
d67fc9ae | 3125 | match |
3126 | gfc_match_import (void) | |
3127 | { | |
3128 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
3129 | match m; | |
3130 | gfc_symbol *sym; | |
3131 | gfc_symtree *st; | |
3132 | ||
f6d0e37a | 3133 | if (gfc_current_ns->proc_name == NULL |
3134 | || gfc_current_ns->proc_name->attr.if_source != IFSRC_IFBODY) | |
d67fc9ae | 3135 | { |
3136 | gfc_error ("IMPORT statement at %C only permitted in " | |
3137 | "an INTERFACE body"); | |
3138 | return MATCH_ERROR; | |
3139 | } | |
3140 | ||
f25dbbf7 | 3141 | if (gfc_notify_std (GFC_STD_F2003, "IMPORT statement at %C") |
d67fc9ae | 3142 | == FAILURE) |
3143 | return MATCH_ERROR; | |
3144 | ||
3145 | if (gfc_match_eos () == MATCH_YES) | |
3146 | { | |
3147 | /* All host variables should be imported. */ | |
3148 | gfc_current_ns->has_import_set = 1; | |
3149 | return MATCH_YES; | |
3150 | } | |
3151 | ||
3152 | if (gfc_match (" ::") == MATCH_YES) | |
3153 | { | |
3154 | if (gfc_match_eos () == MATCH_YES) | |
1a9745d2 | 3155 | { |
3156 | gfc_error ("Expecting list of named entities at %C"); | |
3157 | return MATCH_ERROR; | |
3158 | } | |
d67fc9ae | 3159 | } |
3160 | ||
3161 | for(;;) | |
3162 | { | |
495e197c | 3163 | sym = NULL; |
d67fc9ae | 3164 | m = gfc_match (" %n", name); |
3165 | switch (m) | |
3166 | { | |
3167 | case MATCH_YES: | |
096d4ad9 | 3168 | if (gfc_current_ns->parent != NULL |
f6d0e37a | 3169 | && gfc_find_symbol (name, gfc_current_ns->parent, 1, &sym)) |
096d4ad9 | 3170 | { |
3171 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
3172 | return MATCH_ERROR; | |
3173 | } | |
6b010511 | 3174 | else if (!sym && gfc_current_ns->proc_name->ns->parent != NULL |
f6d0e37a | 3175 | && gfc_find_symbol (name, |
3176 | gfc_current_ns->proc_name->ns->parent, | |
3177 | 1, &sym)) | |
1a9745d2 | 3178 | { |
3179 | gfc_error ("Type name '%s' at %C is ambiguous", name); | |
3180 | return MATCH_ERROR; | |
3181 | } | |
3182 | ||
3183 | if (sym == NULL) | |
3184 | { | |
3185 | gfc_error ("Cannot IMPORT '%s' from host scoping unit " | |
3186 | "at %C - does not exist.", name); | |
3187 | return MATCH_ERROR; | |
3188 | } | |
3189 | ||
e14bee04 | 3190 | if (gfc_find_symtree (gfc_current_ns->sym_root,name)) |
1a9745d2 | 3191 | { |
3192 | gfc_warning ("'%s' is already IMPORTed from host scoping unit " | |
3193 | "at %C.", name); | |
3194 | goto next_item; | |
3195 | } | |
3196 | ||
a15d1caf | 3197 | st = gfc_new_symtree (&gfc_current_ns->sym_root, sym->name); |
1a9745d2 | 3198 | st->n.sym = sym; |
3199 | sym->refs++; | |
c723595c | 3200 | sym->attr.imported = 1; |
d67fc9ae | 3201 | |
c2958b6b | 3202 | if (sym->attr.generic && (sym = gfc_find_dt_in_generic (sym))) |
3203 | { | |
3204 | /* The actual derived type is stored in a symtree with the first | |
df084314 | 3205 | letter of the name capitalized; the symtree with the all |
c2958b6b | 3206 | lower-case name contains the associated generic function. */ |
3207 | st = gfc_new_symtree (&gfc_current_ns->sym_root, | |
3208 | gfc_get_string ("%c%s", | |
3209 | (char) TOUPPER ((unsigned char) sym->name[0]), | |
3210 | &sym->name[1])); | |
3211 | st->n.sym = sym; | |
3212 | sym->refs++; | |
3213 | sym->attr.imported = 1; | |
3214 | } | |
3215 | ||
d67fc9ae | 3216 | goto next_item; |
3217 | ||
3218 | case MATCH_NO: | |
3219 | break; | |
3220 | ||
3221 | case MATCH_ERROR: | |
3222 | return MATCH_ERROR; | |
3223 | } | |
3224 | ||
3225 | next_item: | |
3226 | if (gfc_match_eos () == MATCH_YES) | |
3227 | break; | |
3228 | if (gfc_match_char (',') != MATCH_YES) | |
3229 | goto syntax; | |
3230 | } | |
3231 | ||
3232 | return MATCH_YES; | |
3233 | ||
3234 | syntax: | |
3235 | gfc_error ("Syntax error in IMPORT statement at %C"); | |
3236 | return MATCH_ERROR; | |
3237 | } | |
39351103 | 3238 | |
f6d0e37a | 3239 | |
c72e5f7e | 3240 | /* A minimal implementation of gfc_match without whitespace, escape |
3241 | characters or variable arguments. Returns true if the next | |
3242 | characters match the TARGET template exactly. */ | |
3243 | ||
3244 | static bool | |
3245 | match_string_p (const char *target) | |
3246 | { | |
3247 | const char *p; | |
3248 | ||
3249 | for (p = target; *p; p++) | |
e0be6f02 | 3250 | if ((char) gfc_next_ascii_char () != *p) |
c72e5f7e | 3251 | return false; |
3252 | return true; | |
3253 | } | |
3254 | ||
4ee9c684 | 3255 | /* Matches an attribute specification including array specs. If |
3256 | successful, leaves the variables current_attr and current_as | |
3257 | holding the specification. Also sets the colon_seen variable for | |
3258 | later use by matchers associated with initializations. | |
3259 | ||
3260 | This subroutine is a little tricky in the sense that we don't know | |
3261 | if we really have an attr-spec until we hit the double colon. | |
3262 | Until that time, we can only return MATCH_NO. This forces us to | |
3263 | check for duplicate specification at this level. */ | |
3264 | ||
3265 | static match | |
3266 | match_attr_spec (void) | |
3267 | { | |
4ee9c684 | 3268 | /* Modifiers that can exist in a type statement. */ |
d55c3689 | 3269 | enum |
4ee9c684 | 3270 | { GFC_DECL_BEGIN = 0, |
3271 | DECL_ALLOCATABLE = GFC_DECL_BEGIN, DECL_DIMENSION, DECL_EXTERNAL, | |
3272 | DECL_IN, DECL_OUT, DECL_INOUT, DECL_INTRINSIC, DECL_OPTIONAL, | |
3ea52af3 | 3273 | DECL_PARAMETER, DECL_POINTER, DECL_PROTECTED, DECL_PRIVATE, |
3274 | DECL_PUBLIC, DECL_SAVE, DECL_TARGET, DECL_VALUE, DECL_VOLATILE, | |
b3c3927c | 3275 | DECL_IS_BIND_C, DECL_CODIMENSION, DECL_ASYNCHRONOUS, DECL_CONTIGUOUS, |
3276 | DECL_NONE, GFC_DECL_END /* Sentinel */ | |
d55c3689 | 3277 | }; |
4ee9c684 | 3278 | |
3279 | /* GFC_DECL_END is the sentinel, index starts at 0. */ | |
3280 | #define NUM_DECL GFC_DECL_END | |
3281 | ||
4ee9c684 | 3282 | locus start, seen_at[NUM_DECL]; |
3283 | int seen[NUM_DECL]; | |
9f1b7d17 | 3284 | unsigned int d; |
4ee9c684 | 3285 | const char *attr; |
3286 | match m; | |
f6bb8f4b | 3287 | gfc_try t; |
4ee9c684 | 3288 | |
3289 | gfc_clear_attr (¤t_attr); | |
cbb9e6aa | 3290 | start = gfc_current_locus; |
4ee9c684 | 3291 | |
3292 | current_as = NULL; | |
3293 | colon_seen = 0; | |
3294 | ||
3295 | /* See if we get all of the keywords up to the final double colon. */ | |
3296 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3297 | seen[d] = 0; | |
3298 | ||
3299 | for (;;) | |
3300 | { | |
e0be6f02 | 3301 | char ch; |
c5d33754 | 3302 | |
c72e5f7e | 3303 | d = DECL_NONE; |
3304 | gfc_gobble_whitespace (); | |
3305 | ||
e0be6f02 | 3306 | ch = gfc_next_ascii_char (); |
c72e5f7e | 3307 | if (ch == ':') |
3308 | { | |
3309 | /* This is the successful exit condition for the loop. */ | |
e0be6f02 | 3310 | if (gfc_next_ascii_char () == ':') |
c72e5f7e | 3311 | break; |
3312 | } | |
3313 | else if (ch == ',') | |
c5d33754 | 3314 | { |
c5d33754 | 3315 | gfc_gobble_whitespace (); |
e0be6f02 | 3316 | switch (gfc_peek_ascii_char ()) |
c5d33754 | 3317 | { |
c72e5f7e | 3318 | case 'a': |
738928be | 3319 | gfc_next_ascii_char (); |
3320 | switch (gfc_next_ascii_char ()) | |
3321 | { | |
3322 | case 'l': | |
3323 | if (match_string_p ("locatable")) | |
3324 | { | |
3325 | /* Matched "allocatable". */ | |
3326 | d = DECL_ALLOCATABLE; | |
3327 | } | |
3328 | break; | |
3329 | ||
3330 | case 's': | |
3331 | if (match_string_p ("ynchronous")) | |
3332 | { | |
3333 | /* Matched "asynchronous". */ | |
3334 | d = DECL_ASYNCHRONOUS; | |
3335 | } | |
3336 | break; | |
3337 | } | |
b3c3927c | 3338 | break; |
c72e5f7e | 3339 | |
3340 | case 'b': | |
c5d33754 | 3341 | /* Try and match the bind(c). */ |
75ae7f6c | 3342 | m = gfc_match_bind_c (NULL, true); |
5cf92482 | 3343 | if (m == MATCH_YES) |
c5d33754 | 3344 | d = DECL_IS_BIND_C; |
5cf92482 | 3345 | else if (m == MATCH_ERROR) |
3346 | goto cleanup; | |
c72e5f7e | 3347 | break; |
3348 | ||
aff518b0 | 3349 | case 'c': |
b3c3927c | 3350 | gfc_next_ascii_char (); |
3351 | if ('o' != gfc_next_ascii_char ()) | |
3352 | break; | |
3353 | switch (gfc_next_ascii_char ()) | |
3354 | { | |
3355 | case 'd': | |
3356 | if (match_string_p ("imension")) | |
3357 | { | |
3358 | d = DECL_CODIMENSION; | |
3359 | break; | |
3360 | } | |
3361 | case 'n': | |
3362 | if (match_string_p ("tiguous")) | |
3363 | { | |
3364 | d = DECL_CONTIGUOUS; | |
3365 | break; | |
3366 | } | |
3367 | } | |
aff518b0 | 3368 | break; |
3369 | ||
c72e5f7e | 3370 | case 'd': |
3371 | if (match_string_p ("dimension")) | |
3372 | d = DECL_DIMENSION; | |
3373 | break; | |
3374 | ||
3375 | case 'e': | |
3376 | if (match_string_p ("external")) | |
3377 | d = DECL_EXTERNAL; | |
3378 | break; | |
3379 | ||
3380 | case 'i': | |
3381 | if (match_string_p ("int")) | |
3382 | { | |
e0be6f02 | 3383 | ch = gfc_next_ascii_char (); |
c72e5f7e | 3384 | if (ch == 'e') |
3385 | { | |
3386 | if (match_string_p ("nt")) | |
3387 | { | |
3388 | /* Matched "intent". */ | |
3389 | /* TODO: Call match_intent_spec from here. */ | |
3390 | if (gfc_match (" ( in out )") == MATCH_YES) | |
3391 | d = DECL_INOUT; | |
3392 | else if (gfc_match (" ( in )") == MATCH_YES) | |
3393 | d = DECL_IN; | |
3394 | else if (gfc_match (" ( out )") == MATCH_YES) | |
3395 | d = DECL_OUT; | |
3396 | } | |
3397 | } | |
3398 | else if (ch == 'r') | |
3399 | { | |
3400 | if (match_string_p ("insic")) | |
3401 | { | |
3402 | /* Matched "intrinsic". */ | |
3403 | d = DECL_INTRINSIC; | |
3404 | } | |
3405 | } | |
3406 | } | |
3407 | break; | |
3408 | ||
3409 | case 'o': | |
3410 | if (match_string_p ("optional")) | |
3411 | d = DECL_OPTIONAL; | |
3412 | break; | |
3413 | ||
3414 | case 'p': | |
e0be6f02 | 3415 | gfc_next_ascii_char (); |
3416 | switch (gfc_next_ascii_char ()) | |
c72e5f7e | 3417 | { |
3418 | case 'a': | |
3419 | if (match_string_p ("rameter")) | |
3420 | { | |
3421 | /* Matched "parameter". */ | |
3422 | d = DECL_PARAMETER; | |
3423 | } | |
3424 | break; | |
3425 | ||
3426 | case 'o': | |
3427 | if (match_string_p ("inter")) | |
3428 | { | |
3429 | /* Matched "pointer". */ | |
3430 | d = DECL_POINTER; | |
3431 | } | |
3432 | break; | |
3433 | ||
3434 | case 'r': | |
e0be6f02 | 3435 | ch = gfc_next_ascii_char (); |
c72e5f7e | 3436 | if (ch == 'i') |
3437 | { | |
3438 | if (match_string_p ("vate")) | |
3439 | { | |
3440 | /* Matched "private". */ | |
3441 | d = DECL_PRIVATE; | |
3442 | } | |
3443 | } | |
3444 | else if (ch == 'o') | |
3445 | { | |
3446 | if (match_string_p ("tected")) | |
3447 | { | |
3448 | /* Matched "protected". */ | |
3449 | d = DECL_PROTECTED; | |
3450 | } | |
3451 | } | |
3452 | break; | |
3453 | ||
3454 | case 'u': | |
3455 | if (match_string_p ("blic")) | |
3456 | { | |
3457 | /* Matched "public". */ | |
3458 | d = DECL_PUBLIC; | |
3459 | } | |
3460 | break; | |
3461 | } | |
3462 | break; | |
3463 | ||
3464 | case 's': | |
3465 | if (match_string_p ("save")) | |
3466 | d = DECL_SAVE; | |
3467 | break; | |
3468 | ||
3469 | case 't': | |
3470 | if (match_string_p ("target")) | |
3471 | d = DECL_TARGET; | |
3472 | break; | |
3473 | ||
3474 | case 'v': | |
e0be6f02 | 3475 | gfc_next_ascii_char (); |
3476 | ch = gfc_next_ascii_char (); | |
c72e5f7e | 3477 | if (ch == 'a') |
3478 | { | |
3479 | if (match_string_p ("lue")) | |
3480 | { | |
3481 | /* Matched "value". */ | |
3482 | d = DECL_VALUE; | |
3483 | } | |
3484 | } | |
3485 | else if (ch == 'o') | |
3486 | { | |
3487 | if (match_string_p ("latile")) | |
3488 | { | |
3489 | /* Matched "volatile". */ | |
3490 | d = DECL_VOLATILE; | |
3491 | } | |
3492 | } | |
3493 | break; | |
c5d33754 | 3494 | } |
3495 | } | |
f3f9b222 | 3496 | |
c72e5f7e | 3497 | /* No double colon and no recognizable decl_type, so assume that |
3498 | we've been looking at something else the whole time. */ | |
3499 | if (d == DECL_NONE) | |
3500 | { | |
3501 | m = MATCH_NO; | |
3502 | goto cleanup; | |
3503 | } | |
e14bee04 | 3504 | |
7e221851 | 3505 | /* Check to make sure any parens are paired up correctly. */ |
3506 | if (gfc_match_parens () == MATCH_ERROR) | |
3507 | { | |
3508 | m = MATCH_ERROR; | |
3509 | goto cleanup; | |
3510 | } | |
3511 | ||
4ee9c684 | 3512 | seen[d]++; |
cbb9e6aa | 3513 | seen_at[d] = gfc_current_locus; |
4ee9c684 | 3514 | |
e97ac7c0 | 3515 | if (d == DECL_DIMENSION || d == DECL_CODIMENSION) |
4ee9c684 | 3516 | { |
e97ac7c0 | 3517 | gfc_array_spec *as = NULL; |
4ee9c684 | 3518 | |
e97ac7c0 | 3519 | m = gfc_match_array_spec (&as, d == DECL_DIMENSION, |
3520 | d == DECL_CODIMENSION); | |
3521 | ||
3522 | if (current_as == NULL) | |
3523 | current_as = as; | |
3524 | else if (m == MATCH_YES) | |
4ee9c684 | 3525 | { |
e97ac7c0 | 3526 | merge_array_spec (as, current_as, false); |
434f0922 | 3527 | free (as); |
4ee9c684 | 3528 | } |
3529 | ||
aff518b0 | 3530 | if (m == MATCH_NO) |
3531 | { | |
e97ac7c0 | 3532 | if (d == DECL_CODIMENSION) |
3533 | gfc_error ("Missing codimension specification at %C"); | |
3534 | else | |
3535 | gfc_error ("Missing dimension specification at %C"); | |
aff518b0 | 3536 | m = MATCH_ERROR; |
3537 | } | |
3538 | ||
3539 | if (m == MATCH_ERROR) | |
3540 | goto cleanup; | |
3541 | } | |
4ee9c684 | 3542 | } |
3543 | ||
4ee9c684 | 3544 | /* Since we've seen a double colon, we have to be looking at an |
3545 | attr-spec. This means that we can now issue errors. */ | |
3546 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3547 | if (seen[d] > 1) | |
3548 | { | |
3549 | switch (d) | |
3550 | { | |
3551 | case DECL_ALLOCATABLE: | |
3552 | attr = "ALLOCATABLE"; | |
3553 | break; | |
738928be | 3554 | case DECL_ASYNCHRONOUS: |
3555 | attr = "ASYNCHRONOUS"; | |
3556 | break; | |
aff518b0 | 3557 | case DECL_CODIMENSION: |
3558 | attr = "CODIMENSION"; | |
3559 | break; | |
b3c3927c | 3560 | case DECL_CONTIGUOUS: |
3561 | attr = "CONTIGUOUS"; | |
3562 | break; | |
4ee9c684 | 3563 | case DECL_DIMENSION: |
3564 | attr = "DIMENSION"; | |
3565 | break; | |
3566 | case DECL_EXTERNAL: | |
3567 | attr = "EXTERNAL"; | |
3568 | break; | |
3569 | case DECL_IN: | |
3570 | attr = "INTENT (IN)"; | |
3571 | break; | |
3572 | case DECL_OUT: | |
3573 | attr = "INTENT (OUT)"; | |
3574 | break; | |
3575 | case DECL_INOUT: | |
3576 | attr = "INTENT (IN OUT)"; | |
3577 | break; | |
3578 | case DECL_INTRINSIC: | |
3579 | attr = "INTRINSIC"; | |
3580 | break; | |
3581 | case DECL_OPTIONAL: | |
3582 | attr = "OPTIONAL"; | |
3583 | break; | |
3584 | case DECL_PARAMETER: | |
3585 | attr = "PARAMETER"; | |
3586 | break; | |
3587 | case DECL_POINTER: | |
3588 | attr = "POINTER"; | |
3589 | break; | |
3ea52af3 | 3590 | case DECL_PROTECTED: |
3591 | attr = "PROTECTED"; | |
3592 | break; | |
4ee9c684 | 3593 | case DECL_PRIVATE: |
3594 | attr = "PRIVATE"; | |
3595 | break; | |
3596 | case DECL_PUBLIC: | |
3597 | attr = "PUBLIC"; | |
3598 | break; | |
3599 | case DECL_SAVE: | |
3600 | attr = "SAVE"; | |
3601 | break; | |
3602 | case DECL_TARGET: | |
3603 | attr = "TARGET"; | |
3604 | break; | |
c5d33754 | 3605 | case DECL_IS_BIND_C: |
3606 | attr = "IS_BIND_C"; | |
3607 | break; | |
3608 | case DECL_VALUE: | |
3609 | attr = "VALUE"; | |
3610 | break; | |
ef814c81 | 3611 | case DECL_VOLATILE: |
3612 | attr = "VOLATILE"; | |
3613 | break; | |
4ee9c684 | 3614 | default: |
f6d0e37a | 3615 | attr = NULL; /* This shouldn't happen. */ |
4ee9c684 | 3616 | } |
3617 | ||
3618 | gfc_error ("Duplicate %s attribute at %L", attr, &seen_at[d]); | |
3619 | m = MATCH_ERROR; | |
3620 | goto cleanup; | |
3621 | } | |
3622 | ||
3623 | /* Now that we've dealt with duplicate attributes, add the attributes | |
3624 | to the current attribute. */ | |
3625 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
3626 | { | |
3627 | if (seen[d] == 0) | |
3628 | continue; | |
3629 | ||
3630 | if (gfc_current_state () == COMP_DERIVED | |
aff518b0 | 3631 | && d != DECL_DIMENSION && d != DECL_CODIMENSION |
3632 | && d != DECL_POINTER && d != DECL_PRIVATE | |
b3c3927c | 3633 | && d != DECL_PUBLIC && d != DECL_CONTIGUOUS && d != DECL_NONE) |
4ee9c684 | 3634 | { |
2294b616 | 3635 | if (d == DECL_ALLOCATABLE) |
3636 | { | |
f25dbbf7 | 3637 | if (gfc_notify_std (GFC_STD_F2003, "ALLOCATABLE " |
1a9745d2 | 3638 | "attribute at %C in a TYPE definition") |
e14bee04 | 3639 | == FAILURE) |
2294b616 | 3640 | { |
3641 | m = MATCH_ERROR; | |
3642 | goto cleanup; | |
3643 | } | |
1a9745d2 | 3644 | } |
3645 | else | |
2294b616 | 3646 | { |
3647 | gfc_error ("Attribute at %L is not allowed in a TYPE definition", | |
e14bee04 | 3648 | &seen_at[d]); |
2294b616 | 3649 | m = MATCH_ERROR; |
3650 | goto cleanup; | |
3651 | } | |
4ee9c684 | 3652 | } |
3653 | ||
ea13b9b7 | 3654 | if ((d == DECL_PRIVATE || d == DECL_PUBLIC) |
1a9745d2 | 3655 | && gfc_current_state () != COMP_MODULE) |
ea13b9b7 | 3656 | { |
3657 | if (d == DECL_PRIVATE) | |
3658 | attr = "PRIVATE"; | |
3659 | else | |
3660 | attr = "PUBLIC"; | |
e14bee04 | 3661 | if (gfc_current_state () == COMP_DERIVED |
3662 | && gfc_state_stack->previous | |
3663 | && gfc_state_stack->previous->state == COMP_MODULE) | |
3664 | { | |
f25dbbf7 | 3665 | if (gfc_notify_std (GFC_STD_F2003, "Attribute %s " |
e14bee04 | 3666 | "at %L in a TYPE definition", attr, |
3667 | &seen_at[d]) | |
3668 | == FAILURE) | |
3669 | { | |
3670 | m = MATCH_ERROR; | |
3671 | goto cleanup; | |
3672 | } | |
3673 | } | |
3674 | else | |
3675 | { | |
3676 | gfc_error ("%s attribute at %L is not allowed outside of the " | |
3677 | "specification part of a module", attr, &seen_at[d]); | |
3678 | m = MATCH_ERROR; | |
3679 | goto cleanup; | |
3680 | } | |
ea13b9b7 | 3681 | } |
3682 | ||
4ee9c684 | 3683 | switch (d) |
3684 | { | |
3685 | case DECL_ALLOCATABLE: | |
3686 | t = gfc_add_allocatable (¤t_attr, &seen_at[d]); | |
3687 | break; | |
3688 | ||
738928be | 3689 | case DECL_ASYNCHRONOUS: |
3690 | if (gfc_notify_std (GFC_STD_F2003, | |
f25dbbf7 | 3691 | "ASYNCHRONOUS attribute at %C") |
738928be | 3692 | == FAILURE) |
3693 | t = FAILURE; | |
3694 | else | |
3695 | t = gfc_add_asynchronous (¤t_attr, NULL, &seen_at[d]); | |
3696 | break; | |
3697 | ||
aff518b0 | 3698 | case DECL_CODIMENSION: |
3699 | t = gfc_add_codimension (¤t_attr, NULL, &seen_at[d]); | |
3700 | break; | |
3701 | ||
b3c3927c | 3702 | case DECL_CONTIGUOUS: |
3703 | if (gfc_notify_std (GFC_STD_F2008, | |
f25dbbf7 | 3704 | "CONTIGUOUS attribute at %C") |
b3c3927c | 3705 | == FAILURE) |
3706 | t = FAILURE; | |
3707 | else | |
3708 | t = gfc_add_contiguous (¤t_attr, NULL, &seen_at[d]); | |
3709 | break; | |
3710 | ||
4ee9c684 | 3711 | case DECL_DIMENSION: |
950683ed | 3712 | t = gfc_add_dimension (¤t_attr, NULL, &seen_at[d]); |
4ee9c684 | 3713 | break; |
3714 | ||
3715 | case DECL_EXTERNAL: | |
3716 | t = gfc_add_external (¤t_attr, &seen_at[d]); | |
3717 | break; | |
3718 | ||
3719 | case DECL_IN: | |
3720 | t = gfc_add_intent (¤t_attr, INTENT_IN, &seen_at[d]); | |
3721 | break; | |
3722 | ||
3723 | case DECL_OUT: | |
3724 | t = gfc_add_intent (¤t_attr, INTENT_OUT, &seen_at[d]); | |
3725 | break; | |
3726 | ||
3727 | case DECL_INOUT: | |
3728 | t = gfc_add_intent (¤t_attr, INTENT_INOUT, &seen_at[d]); | |
3729 | break; | |
3730 | ||
3731 | case DECL_INTRINSIC: | |
3732 | t = gfc_add_intrinsic (¤t_attr, &seen_at[d]); | |
3733 | break; | |
3734 | ||
3735 | case DECL_OPTIONAL: | |
3736 | t = gfc_add_optional (¤t_attr, &seen_at[d]); | |
3737 | break; | |
3738 | ||
3739 | case DECL_PARAMETER: | |
950683ed | 3740 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, &seen_at[d]); |
4ee9c684 | 3741 | break; |
3742 | ||
3743 | case DECL_POINTER: | |
3744 | t = gfc_add_pointer (¤t_attr, &seen_at[d]); | |
3745 | break; | |
3746 | ||
3ea52af3 | 3747 | case DECL_PROTECTED: |
3748 | if (gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
3749 | { | |
3750 | gfc_error ("PROTECTED at %C only allowed in specification " | |
3751 | "part of a module"); | |
3752 | t = FAILURE; | |
3753 | break; | |
3754 | } | |
3755 | ||
f25dbbf7 | 3756 | if (gfc_notify_std (GFC_STD_F2003, "PROTECTED " |
1a9745d2 | 3757 | "attribute at %C") |
3ea52af3 | 3758 | == FAILURE) |
3759 | t = FAILURE; | |
3760 | else | |
3761 | t = gfc_add_protected (¤t_attr, NULL, &seen_at[d]); | |
3762 | break; | |
3763 | ||
4ee9c684 | 3764 | case DECL_PRIVATE: |
950683ed | 3765 | t = gfc_add_access (¤t_attr, ACCESS_PRIVATE, NULL, |
3766 | &seen_at[d]); | |
4ee9c684 | 3767 | break; |
3768 | ||
3769 | case DECL_PUBLIC: | |
950683ed | 3770 | t = gfc_add_access (¤t_attr, ACCESS_PUBLIC, NULL, |
3771 | &seen_at[d]); | |
4ee9c684 | 3772 | break; |
3773 | ||
3774 | case DECL_SAVE: | |
23d075f4 | 3775 | t = gfc_add_save (¤t_attr, SAVE_EXPLICIT, NULL, &seen_at[d]); |
4ee9c684 | 3776 | break; |
3777 | ||
3778 | case DECL_TARGET: | |
3779 | t = gfc_add_target (¤t_attr, &seen_at[d]); | |
3780 | break; | |
3781 | ||
c5d33754 | 3782 | case DECL_IS_BIND_C: |
3783 | t = gfc_add_is_bind_c(¤t_attr, NULL, &seen_at[d], 0); | |
3784 | break; | |
3785 | ||
8f6339b6 | 3786 | case DECL_VALUE: |
f25dbbf7 | 3787 | if (gfc_notify_std (GFC_STD_F2003, "VALUE attribute " |
1a9745d2 | 3788 | "at %C") |
8f6339b6 | 3789 | == FAILURE) |
3790 | t = FAILURE; | |
3791 | else | |
3792 | t = gfc_add_value (¤t_attr, NULL, &seen_at[d]); | |
3793 | break; | |
3794 | ||
ef814c81 | 3795 | case DECL_VOLATILE: |
3796 | if (gfc_notify_std (GFC_STD_F2003, | |
f25dbbf7 | 3797 | "VOLATILE attribute at %C") |
ef814c81 | 3798 | == FAILURE) |
3799 | t = FAILURE; | |
3800 | else | |
3801 | t = gfc_add_volatile (¤t_attr, NULL, &seen_at[d]); | |
3802 | break; | |
3803 | ||
4ee9c684 | 3804 | default: |
3805 | gfc_internal_error ("match_attr_spec(): Bad attribute"); | |
3806 | } | |
3807 | ||
3808 | if (t == FAILURE) | |
3809 | { | |
3810 | m = MATCH_ERROR; | |
3811 | goto cleanup; | |
3812 | } | |
3813 | } | |
3814 | ||
b5048314 | 3815 | /* Since Fortran 2008 module variables implicitly have the SAVE attribute. */ |
3816 | if (gfc_current_state () == COMP_MODULE && !current_attr.save | |
3817 | && (gfc_option.allow_std & GFC_STD_F2008) != 0) | |
23d075f4 | 3818 | current_attr.save = SAVE_IMPLICIT; |
3819 | ||
4ee9c684 | 3820 | colon_seen = 1; |
3821 | return MATCH_YES; | |
3822 | ||
3823 | cleanup: | |
cbb9e6aa | 3824 | gfc_current_locus = start; |
4ee9c684 | 3825 | gfc_free_array_spec (current_as); |
3826 | current_as = NULL; | |
3827 | return m; | |
3828 | } | |
3829 | ||
3830 | ||
c5d33754 | 3831 | /* Set the binding label, dest_label, either with the binding label |
3832 | stored in the given gfc_typespec, ts, or if none was provided, it | |
3833 | will be the symbol name in all lower case, as required by the draft | |
3834 | (J3/04-007, section 15.4.1). If a binding label was given and | |
3835 | there is more than one argument (num_idents), it is an error. */ | |
3836 | ||
7b2060ba | 3837 | static gfc_try |
1d8a57d8 | 3838 | set_binding_label (const char **dest_label, const char *sym_name, |
3839 | int num_idents) | |
c5d33754 | 3840 | { |
825718f9 | 3841 | if (num_idents > 1 && has_name_equals) |
c5d33754 | 3842 | { |
825718f9 | 3843 | gfc_error ("Multiple identifiers provided with " |
3844 | "single NAME= specifier at %C"); | |
3845 | return FAILURE; | |
3846 | } | |
c5d33754 | 3847 | |
7b2060ba | 3848 | if (curr_binding_label) |
df084314 | 3849 | /* Binding label given; store in temp holder till have sym. */ |
7b2060ba | 3850 | *dest_label = curr_binding_label; |
c5d33754 | 3851 | else |
3852 | { | |
3853 | /* No binding label given, and the NAME= specifier did not exist, | |
3854 | which means there was no NAME="". */ | |
3855 | if (sym_name != NULL && has_name_equals == 0) | |
7b2060ba | 3856 | *dest_label = IDENTIFIER_POINTER (get_identifier (sym_name)); |
c5d33754 | 3857 | } |
3858 | ||
3859 | return SUCCESS; | |
3860 | } | |
3861 | ||
3862 | ||
3863 | /* Set the status of the given common block as being BIND(C) or not, | |
3864 | depending on the given parameter, is_bind_c. */ | |
3865 | ||
3866 | void | |
3867 | set_com_block_bind_c (gfc_common_head *com_block, int is_bind_c) | |
3868 | { | |
3869 | com_block->is_bind_c = is_bind_c; | |
3870 | return; | |
3871 | } | |
3872 | ||
3873 | ||
3874 | /* Verify that the given gfc_typespec is for a C interoperable type. */ | |
3875 | ||
f6bb8f4b | 3876 | gfc_try |
2564c57a | 3877 | gfc_verify_c_interop (gfc_typespec *ts) |
c5d33754 | 3878 | { |
eeebe20b | 3879 | if (ts->type == BT_DERIVED && ts->u.derived != NULL) |
5f9b1308 | 3880 | return (ts->u.derived->ts.is_c_interop || ts->u.derived->attr.is_bind_c) |
3881 | ? SUCCESS : FAILURE; | |
2564c57a | 3882 | else if (ts->type == BT_CLASS) |
3883 | return FAILURE; | |
8c2d8d6d | 3884 | else if (ts->is_c_interop != 1 && ts->type != BT_ASSUMED) |
c5d33754 | 3885 | return FAILURE; |
8c2d8d6d | 3886 | |
c5d33754 | 3887 | return SUCCESS; |
3888 | } | |
3889 | ||
3890 | ||
3891 | /* Verify that the variables of a given common block, which has been | |
3892 | defined with the attribute specifier bind(c), to be of a C | |
3893 | interoperable type. Errors will be reported here, if | |
3894 | encountered. */ | |
3895 | ||
f6bb8f4b | 3896 | gfc_try |
c5d33754 | 3897 | verify_com_block_vars_c_interop (gfc_common_head *com_block) |
3898 | { | |
3899 | gfc_symbol *curr_sym = NULL; | |
f6bb8f4b | 3900 | gfc_try retval = SUCCESS; |
c5d33754 | 3901 | |
3902 | curr_sym = com_block->head; | |
3903 | ||
3904 | /* Make sure we have at least one symbol. */ | |
3905 | if (curr_sym == NULL) | |
3906 | return retval; | |
3907 | ||
3908 | /* Here we know we have a symbol, so we'll execute this loop | |
3909 | at least once. */ | |
3910 | do | |
3911 | { | |
3912 | /* The second to last param, 1, says this is in a common block. */ | |
3913 | retval = verify_bind_c_sym (curr_sym, &(curr_sym->ts), 1, com_block); | |
3914 | curr_sym = curr_sym->common_next; | |
3915 | } while (curr_sym != NULL); | |
3916 | ||
3917 | return retval; | |
3918 | } | |
3919 | ||
3920 | ||
3921 | /* Verify that a given BIND(C) symbol is C interoperable. If it is not, | |
3922 | an appropriate error message is reported. */ | |
3923 | ||
f6bb8f4b | 3924 | gfc_try |
c5d33754 | 3925 | verify_bind_c_sym (gfc_symbol *tmp_sym, gfc_typespec *ts, |
3926 | int is_in_common, gfc_common_head *com_block) | |
3927 | { | |
1f2ab120 | 3928 | bool bind_c_function = false; |
f6bb8f4b | 3929 | gfc_try retval = SUCCESS; |
4f7bb9ec | 3930 | |
1f2ab120 | 3931 | if (tmp_sym->attr.function && tmp_sym->attr.is_bind_c) |
3932 | bind_c_function = true; | |
3933 | ||
4f7bb9ec | 3934 | if (tmp_sym->attr.function && tmp_sym->result != NULL) |
3935 | { | |
3936 | tmp_sym = tmp_sym->result; | |
3937 | /* Make sure it wasn't an implicitly typed result. */ | |
8e618001 | 3938 | if (tmp_sym->attr.implicit_type && gfc_option.warn_c_binding_type) |
4f7bb9ec | 3939 | { |
3940 | gfc_warning ("Implicitly declared BIND(C) function '%s' at " | |
3941 | "%L may not be C interoperable", tmp_sym->name, | |
3942 | &tmp_sym->declared_at); | |
3943 | tmp_sym->ts.f90_type = tmp_sym->ts.type; | |
3944 | /* Mark it as C interoperable to prevent duplicate warnings. */ | |
3945 | tmp_sym->ts.is_c_interop = 1; | |
3946 | tmp_sym->attr.is_c_interop = 1; | |
3947 | } | |
3948 | } | |
1f2ab120 | 3949 | |
c5d33754 | 3950 | /* Here, we know we have the bind(c) attribute, so if we have |
3951 | enough type info, then verify that it's a C interop kind. | |
3952 | The info could be in the symbol already, or possibly still in | |
3953 | the given ts (current_ts), so look in both. */ | |
3954 | if (tmp_sym->ts.type != BT_UNKNOWN || ts->type != BT_UNKNOWN) | |
3955 | { | |
2564c57a | 3956 | if (gfc_verify_c_interop (&(tmp_sym->ts)) != SUCCESS) |
c5d33754 | 3957 | { |
3958 | /* See if we're dealing with a sym in a common block or not. */ | |
8e618001 | 3959 | if (is_in_common == 1 && gfc_option.warn_c_binding_type) |
c5d33754 | 3960 | { |
3961 | gfc_warning ("Variable '%s' in common block '%s' at %L " | |
3962 | "may not be a C interoperable " | |
3963 | "kind though common block '%s' is BIND(C)", | |
3964 | tmp_sym->name, com_block->name, | |
3965 | &(tmp_sym->declared_at), com_block->name); | |
3966 | } | |
3967 | else | |
3968 | { | |
3969 | if (tmp_sym->ts.type == BT_DERIVED || ts->type == BT_DERIVED) | |
3970 | gfc_error ("Type declaration '%s' at %L is not C " | |
3971 | "interoperable but it is BIND(C)", | |
3972 | tmp_sym->name, &(tmp_sym->declared_at)); | |
8e618001 | 3973 | else if (gfc_option.warn_c_binding_type) |
c5d33754 | 3974 | gfc_warning ("Variable '%s' at %L " |
3975 | "may not be a C interoperable " | |
3976 | "kind but it is bind(c)", | |
3977 | tmp_sym->name, &(tmp_sym->declared_at)); | |
3978 | } | |
3979 | } | |
3980 | ||
3981 | /* Variables declared w/in a common block can't be bind(c) | |
3982 | since there's no way for C to see these variables, so there's | |
3983 | semantically no reason for the attribute. */ | |
3984 | if (is_in_common == 1 && tmp_sym->attr.is_bind_c == 1) | |
3985 | { | |
3986 | gfc_error ("Variable '%s' in common block '%s' at " | |
3987 | "%L cannot be declared with BIND(C) " | |
3988 | "since it is not a global", | |
3989 | tmp_sym->name, com_block->name, | |
3990 | &(tmp_sym->declared_at)); | |
3991 | retval = FAILURE; | |
3992 | } | |
3993 | ||
3994 | /* Scalar variables that are bind(c) can not have the pointer | |
3995 | or allocatable attributes. */ | |
3996 | if (tmp_sym->attr.is_bind_c == 1) | |
3997 | { | |
3998 | if (tmp_sym->attr.pointer == 1) | |
3999 | { | |
4000 | gfc_error ("Variable '%s' at %L cannot have both the " | |
4001 | "POINTER and BIND(C) attributes", | |
4002 | tmp_sym->name, &(tmp_sym->declared_at)); | |
4003 | retval = FAILURE; | |
4004 | } | |
4005 | ||
4006 | if (tmp_sym->attr.allocatable == 1) | |
4007 | { | |
4008 | gfc_error ("Variable '%s' at %L cannot have both the " | |
4009 | "ALLOCATABLE and BIND(C) attributes", | |
4010 | tmp_sym->name, &(tmp_sym->declared_at)); | |
4011 | retval = FAILURE; | |
4012 | } | |
4013 | ||
1f2ab120 | 4014 | } |
4015 | ||
4016 | /* If it is a BIND(C) function, make sure the return value is a | |
4017 | scalar value. The previous tests in this function made sure | |
4018 | the type is interoperable. */ | |
4019 | if (bind_c_function && tmp_sym->as != NULL) | |
4020 | gfc_error ("Return type of BIND(C) function '%s' at %L cannot " | |
4021 | "be an array", tmp_sym->name, &(tmp_sym->declared_at)); | |
4022 | ||
4023 | /* BIND(C) functions can not return a character string. */ | |
4024 | if (bind_c_function && tmp_sym->ts.type == BT_CHARACTER) | |
eeebe20b | 4025 | if (tmp_sym->ts.u.cl == NULL || tmp_sym->ts.u.cl->length == NULL |
4026 | || tmp_sym->ts.u.cl->length->expr_type != EXPR_CONSTANT | |
4027 | || mpz_cmp_si (tmp_sym->ts.u.cl->length->value.integer, 1) != 0) | |
1f2ab120 | 4028 | gfc_error ("Return type of BIND(C) function '%s' at %L cannot " |
c5d33754 | 4029 | "be a character string", tmp_sym->name, |
4030 | &(tmp_sym->declared_at)); | |
c5d33754 | 4031 | } |
4032 | ||
4033 | /* See if the symbol has been marked as private. If it has, make sure | |
4034 | there is no binding label and warn the user if there is one. */ | |
4035 | if (tmp_sym->attr.access == ACCESS_PRIVATE | |
7b2060ba | 4036 | && tmp_sym->binding_label) |
c5d33754 | 4037 | /* Use gfc_warning_now because we won't say that the symbol fails |
4038 | just because of this. */ | |
4039 | gfc_warning_now ("Symbol '%s' at %L is marked PRIVATE but has been " | |
4040 | "given the binding label '%s'", tmp_sym->name, | |
4041 | &(tmp_sym->declared_at), tmp_sym->binding_label); | |
4042 | ||
4043 | return retval; | |
4044 | } | |
4045 | ||
4046 | ||
4047 | /* Set the appropriate fields for a symbol that's been declared as | |
4048 | BIND(C) (the is_bind_c flag and the binding label), and verify that | |
4049 | the type is C interoperable. Errors are reported by the functions | |
4050 | used to set/test these fields. */ | |
4051 | ||
f6bb8f4b | 4052 | gfc_try |
c5d33754 | 4053 | set_verify_bind_c_sym (gfc_symbol *tmp_sym, int num_idents) |
4054 | { | |
f6bb8f4b | 4055 | gfc_try retval = SUCCESS; |
c5d33754 | 4056 | |
4057 | /* TODO: Do we need to make sure the vars aren't marked private? */ | |
4058 | ||
4059 | /* Set the is_bind_c bit in symbol_attribute. */ | |
4060 | gfc_add_is_bind_c (&(tmp_sym->attr), tmp_sym->name, &gfc_current_locus, 0); | |
4061 | ||
7b2060ba | 4062 | if (set_binding_label (&tmp_sym->binding_label, tmp_sym->name, |
c5d33754 | 4063 | num_idents) != SUCCESS) |
4064 | return FAILURE; | |
4065 | ||
4066 | return retval; | |
4067 | } | |
4068 | ||
4069 | ||
4070 | /* Set the fields marking the given common block as BIND(C), including | |
4071 | a binding label, and report any errors encountered. */ | |
4072 | ||
f6bb8f4b | 4073 | gfc_try |
c5d33754 | 4074 | set_verify_bind_c_com_block (gfc_common_head *com_block, int num_idents) |
4075 | { | |
f6bb8f4b | 4076 | gfc_try retval = SUCCESS; |
c5d33754 | 4077 | |
4078 | /* destLabel, common name, typespec (which may have binding label). */ | |
7b2060ba | 4079 | if (set_binding_label (&com_block->binding_label, com_block->name, |
4080 | num_idents) | |
c5d33754 | 4081 | != SUCCESS) |
4082 | return FAILURE; | |
4083 | ||
4084 | /* Set the given common block (com_block) to being bind(c) (1). */ | |
4085 | set_com_block_bind_c (com_block, 1); | |
4086 | ||
4087 | return retval; | |
4088 | } | |
4089 | ||
4090 | ||
4091 | /* Retrieve the list of one or more identifiers that the given bind(c) | |
4092 | attribute applies to. */ | |
4093 | ||
f6bb8f4b | 4094 | gfc_try |
c5d33754 | 4095 | get_bind_c_idents (void) |
4096 | { | |
4097 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4098 | int num_idents = 0; | |
4099 | gfc_symbol *tmp_sym = NULL; | |
4100 | match found_id; | |
4101 | gfc_common_head *com_block = NULL; | |
4102 | ||
4103 | if (gfc_match_name (name) == MATCH_YES) | |
4104 | { | |
4105 | found_id = MATCH_YES; | |
4106 | gfc_get_ha_symbol (name, &tmp_sym); | |
4107 | } | |
4108 | else if (match_common_name (name) == MATCH_YES) | |
4109 | { | |
4110 | found_id = MATCH_YES; | |
4111 | com_block = gfc_get_common (name, 0); | |
4112 | } | |
4113 | else | |
4114 | { | |
4115 | gfc_error ("Need either entity or common block name for " | |
4116 | "attribute specification statement at %C"); | |
4117 | return FAILURE; | |
4118 | } | |
4119 | ||
4120 | /* Save the current identifier and look for more. */ | |
4121 | do | |
4122 | { | |
4123 | /* Increment the number of identifiers found for this spec stmt. */ | |
4124 | num_idents++; | |
4125 | ||
4126 | /* Make sure we have a sym or com block, and verify that it can | |
4127 | be bind(c). Set the appropriate field(s) and look for more | |
4128 | identifiers. */ | |
4129 | if (tmp_sym != NULL || com_block != NULL) | |
4130 | { | |
4131 | if (tmp_sym != NULL) | |
4132 | { | |
4133 | if (set_verify_bind_c_sym (tmp_sym, num_idents) | |
4134 | != SUCCESS) | |
4135 | return FAILURE; | |
4136 | } | |
4137 | else | |
4138 | { | |
4139 | if (set_verify_bind_c_com_block(com_block, num_idents) | |
4140 | != SUCCESS) | |
4141 | return FAILURE; | |
4142 | } | |
4143 | ||
4144 | /* Look to see if we have another identifier. */ | |
4145 | tmp_sym = NULL; | |
4146 | if (gfc_match_eos () == MATCH_YES) | |
4147 | found_id = MATCH_NO; | |
4148 | else if (gfc_match_char (',') != MATCH_YES) | |
4149 | found_id = MATCH_NO; | |
4150 | else if (gfc_match_name (name) == MATCH_YES) | |
4151 | { | |
4152 | found_id = MATCH_YES; | |
4153 | gfc_get_ha_symbol (name, &tmp_sym); | |
4154 | } | |
4155 | else if (match_common_name (name) == MATCH_YES) | |
4156 | { | |
4157 | found_id = MATCH_YES; | |
4158 | com_block = gfc_get_common (name, 0); | |
4159 | } | |
4160 | else | |
4161 | { | |
4162 | gfc_error ("Missing entity or common block name for " | |
4163 | "attribute specification statement at %C"); | |
4164 | return FAILURE; | |
4165 | } | |
4166 | } | |
4167 | else | |
4168 | { | |
4169 | gfc_internal_error ("Missing symbol"); | |
4170 | } | |
4171 | } while (found_id == MATCH_YES); | |
4172 | ||
4173 | /* if we get here we were successful */ | |
4174 | return SUCCESS; | |
4175 | } | |
4176 | ||
4177 | ||
4178 | /* Try and match a BIND(C) attribute specification statement. */ | |
4179 | ||
4180 | match | |
4181 | gfc_match_bind_c_stmt (void) | |
4182 | { | |
4183 | match found_match = MATCH_NO; | |
4184 | gfc_typespec *ts; | |
4185 | ||
4186 | ts = ¤t_ts; | |
4187 | ||
4188 | /* This may not be necessary. */ | |
4189 | gfc_clear_ts (ts); | |
4190 | /* Clear the temporary binding label holder. */ | |
7b2060ba | 4191 | curr_binding_label = NULL; |
c5d33754 | 4192 | |
4193 | /* Look for the bind(c). */ | |
75ae7f6c | 4194 | found_match = gfc_match_bind_c (NULL, true); |
c5d33754 | 4195 | |
4196 | if (found_match == MATCH_YES) | |
4197 | { | |
4198 | /* Look for the :: now, but it is not required. */ | |
4199 | gfc_match (" :: "); | |
4200 | ||
4201 | /* Get the identifier(s) that needs to be updated. This may need to | |
4202 | change to hand the flag(s) for the attr specified so all identifiers | |
4203 | found can have all appropriate parts updated (assuming that the same | |
4204 | spec stmt can have multiple attrs, such as both bind(c) and | |
4205 | allocatable...). */ | |
4206 | if (get_bind_c_idents () != SUCCESS) | |
4207 | /* Error message should have printed already. */ | |
4208 | return MATCH_ERROR; | |
4209 | } | |
4210 | ||
4211 | return found_match; | |
4212 | } | |
4213 | ||
4214 | ||
4ee9c684 | 4215 | /* Match a data declaration statement. */ |
4216 | ||
4217 | match | |
4218 | gfc_match_data_decl (void) | |
4219 | { | |
4220 | gfc_symbol *sym; | |
4221 | match m; | |
3923b69f | 4222 | int elem; |
4ee9c684 | 4223 | |
c5d33754 | 4224 | num_idents_on_line = 0; |
4225 | ||
e8152f13 | 4226 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
4ee9c684 | 4227 | if (m != MATCH_YES) |
4228 | return m; | |
4229 | ||
b3704193 | 4230 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
4231 | && gfc_current_state () != COMP_DERIVED) | |
4ee9c684 | 4232 | { |
eeebe20b | 4233 | sym = gfc_use_derived (current_ts.u.derived); |
4ee9c684 | 4234 | |
4235 | if (sym == NULL) | |
4236 | { | |
4237 | m = MATCH_ERROR; | |
4238 | goto cleanup; | |
4239 | } | |
4240 | ||
eeebe20b | 4241 | current_ts.u.derived = sym; |
4ee9c684 | 4242 | } |
4243 | ||
4244 | m = match_attr_spec (); | |
4245 | if (m == MATCH_ERROR) | |
4246 | { | |
4247 | m = MATCH_NO; | |
4248 | goto cleanup; | |
4249 | } | |
4250 | ||
b3704193 | 4251 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
4252 | && current_ts.u.derived->components == NULL | |
eeebe20b | 4253 | && !current_ts.u.derived->attr.zero_comp) |
4ee9c684 | 4254 | { |
4255 | ||
4256 | if (current_attr.pointer && gfc_current_state () == COMP_DERIVED) | |
4257 | goto ok; | |
4258 | ||
eeebe20b | 4259 | gfc_find_symbol (current_ts.u.derived->name, |
4260 | current_ts.u.derived->ns->parent, 1, &sym); | |
4ee9c684 | 4261 | |
40cf8078 | 4262 | /* Any symbol that we find had better be a type definition |
1a9745d2 | 4263 | which has its components defined. */ |
40cf8078 | 4264 | if (sym != NULL && sym->attr.flavor == FL_DERIVED |
eeebe20b | 4265 | && (current_ts.u.derived->components != NULL |
4266 | || current_ts.u.derived->attr.zero_comp)) | |
4ee9c684 | 4267 | goto ok; |
4268 | ||
40cf8078 | 4269 | /* Now we have an error, which we signal, and then fix up |
4270 | because the knock-on is plain and simple confusing. */ | |
4271 | gfc_error_now ("Derived type at %C has not been previously defined " | |
1a9745d2 | 4272 | "and so cannot appear in a derived type definition"); |
40cf8078 | 4273 | current_attr.pointer = 1; |
4274 | goto ok; | |
4ee9c684 | 4275 | } |
4276 | ||
4277 | ok: | |
4278 | /* If we have an old-style character declaration, and no new-style | |
4279 | attribute specifications, then there a comma is optional between | |
4280 | the type specification and the variable list. */ | |
4281 | if (m == MATCH_NO && current_ts.type == BT_CHARACTER && old_char_selector) | |
4282 | gfc_match_char (','); | |
4283 | ||
3923b69f | 4284 | /* Give the types/attributes to symbols that follow. Give the element |
4285 | a number so that repeat character length expressions can be copied. */ | |
4286 | elem = 1; | |
4ee9c684 | 4287 | for (;;) |
4288 | { | |
c5d33754 | 4289 | num_idents_on_line++; |
3923b69f | 4290 | m = variable_decl (elem++); |
4ee9c684 | 4291 | if (m == MATCH_ERROR) |
4292 | goto cleanup; | |
4293 | if (m == MATCH_NO) | |
4294 | break; | |
4295 | ||
4296 | if (gfc_match_eos () == MATCH_YES) | |
4297 | goto cleanup; | |
4298 | if (gfc_match_char (',') != MATCH_YES) | |
4299 | break; | |
4300 | } | |
4301 | ||
8f0bdb23 | 4302 | if (gfc_error_flag_test () == 0) |
4303 | gfc_error ("Syntax error in data declaration at %C"); | |
4ee9c684 | 4304 | m = MATCH_ERROR; |
4305 | ||
af29c1f0 | 4306 | gfc_free_data_all (gfc_current_ns); |
4307 | ||
4ee9c684 | 4308 | cleanup: |
4309 | gfc_free_array_spec (current_as); | |
4310 | current_as = NULL; | |
4311 | return m; | |
4312 | } | |
4313 | ||
4314 | ||
4315 | /* Match a prefix associated with a function or subroutine | |
4316 | declaration. If the typespec pointer is nonnull, then a typespec | |
4317 | can be matched. Note that if nothing matches, MATCH_YES is | |
4318 | returned (the null string was matched). */ | |
4319 | ||
077932f9 | 4320 | match |
4321 | gfc_match_prefix (gfc_typespec *ts) | |
4ee9c684 | 4322 | { |
5b11d932 | 4323 | bool seen_type; |
4e4ea00b | 4324 | bool seen_impure; |
4325 | bool found_prefix; | |
4ee9c684 | 4326 | |
4327 | gfc_clear_attr (¤t_attr); | |
4e4ea00b | 4328 | seen_type = false; |
4329 | seen_impure = false; | |
4ee9c684 | 4330 | |
d1645c7b | 4331 | gcc_assert (!gfc_matching_prefix); |
4332 | gfc_matching_prefix = true; | |
40de255b | 4333 | |
4e4ea00b | 4334 | do |
4ee9c684 | 4335 | { |
4e4ea00b | 4336 | found_prefix = false; |
4ee9c684 | 4337 | |
4e4ea00b | 4338 | if (!seen_type && ts != NULL |
4339 | && gfc_match_decl_type_spec (ts, 0) == MATCH_YES | |
4340 | && gfc_match_space () == MATCH_YES) | |
4341 | { | |
4ee9c684 | 4342 | |
4e4ea00b | 4343 | seen_type = true; |
4344 | found_prefix = true; | |
4345 | } | |
4346 | ||
4347 | if (gfc_match ("elemental% ") == MATCH_YES) | |
4348 | { | |
4349 | if (gfc_add_elemental (¤t_attr, NULL) == FAILURE) | |
4350 | goto error; | |
4351 | ||
4352 | found_prefix = true; | |
4353 | } | |
4354 | ||
4355 | if (gfc_match ("pure% ") == MATCH_YES) | |
4356 | { | |
4357 | if (gfc_add_pure (¤t_attr, NULL) == FAILURE) | |
4358 | goto error; | |
4359 | ||
4360 | found_prefix = true; | |
4361 | } | |
4ee9c684 | 4362 | |
4e4ea00b | 4363 | if (gfc_match ("recursive% ") == MATCH_YES) |
4364 | { | |
4365 | if (gfc_add_recursive (¤t_attr, NULL) == FAILURE) | |
4366 | goto error; | |
4367 | ||
4368 | found_prefix = true; | |
4369 | } | |
4370 | ||
4371 | /* IMPURE is a somewhat special case, as it needs not set an actual | |
4372 | attribute but rather only prevents ELEMENTAL routines from being | |
4373 | automatically PURE. */ | |
4374 | if (gfc_match ("impure% ") == MATCH_YES) | |
4375 | { | |
4376 | if (gfc_notify_std (GFC_STD_F2008, | |
f25dbbf7 | 4377 | "IMPURE procedure at %C") |
4e4ea00b | 4378 | == FAILURE) |
4379 | goto error; | |
4380 | ||
4381 | seen_impure = true; | |
4382 | found_prefix = true; | |
4383 | } | |
4ee9c684 | 4384 | } |
4e4ea00b | 4385 | while (found_prefix); |
4ee9c684 | 4386 | |
4e4ea00b | 4387 | /* IMPURE and PURE must not both appear, of course. */ |
4388 | if (seen_impure && current_attr.pure) | |
4ee9c684 | 4389 | { |
4e4ea00b | 4390 | gfc_error ("PURE and IMPURE must not appear both at %C"); |
4391 | goto error; | |
4ee9c684 | 4392 | } |
4393 | ||
4e4ea00b | 4394 | /* If IMPURE it not seen but the procedure is ELEMENTAL, mark it as PURE. */ |
4395 | if (!seen_impure && current_attr.elemental && !current_attr.pure) | |
4ee9c684 | 4396 | { |
4e4ea00b | 4397 | if (gfc_add_pure (¤t_attr, NULL) == FAILURE) |
40de255b | 4398 | goto error; |
4ee9c684 | 4399 | } |
4400 | ||
4401 | /* At this point, the next item is not a prefix. */ | |
d1645c7b | 4402 | gcc_assert (gfc_matching_prefix); |
4403 | gfc_matching_prefix = false; | |
4ee9c684 | 4404 | return MATCH_YES; |
40de255b | 4405 | |
4406 | error: | |
d1645c7b | 4407 | gcc_assert (gfc_matching_prefix); |
4408 | gfc_matching_prefix = false; | |
40de255b | 4409 | return MATCH_ERROR; |
4ee9c684 | 4410 | } |
4411 | ||
4412 | ||
077932f9 | 4413 | /* Copy attributes matched by gfc_match_prefix() to attributes on a symbol. */ |
4ee9c684 | 4414 | |
f6bb8f4b | 4415 | static gfc_try |
1a9745d2 | 4416 | copy_prefix (symbol_attribute *dest, locus *where) |
4ee9c684 | 4417 | { |
4ee9c684 | 4418 | if (current_attr.pure && gfc_add_pure (dest, where) == FAILURE) |
4419 | return FAILURE; | |
4420 | ||
4421 | if (current_attr.elemental && gfc_add_elemental (dest, where) == FAILURE) | |
4422 | return FAILURE; | |
4423 | ||
4424 | if (current_attr.recursive && gfc_add_recursive (dest, where) == FAILURE) | |
4425 | return FAILURE; | |
4426 | ||
4427 | return SUCCESS; | |
4428 | } | |
4429 | ||
4430 | ||
4431 | /* Match a formal argument list. */ | |
4432 | ||
4433 | match | |
1a9745d2 | 4434 | gfc_match_formal_arglist (gfc_symbol *progname, int st_flag, int null_flag) |
4ee9c684 | 4435 | { |
4436 | gfc_formal_arglist *head, *tail, *p, *q; | |
4437 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4438 | gfc_symbol *sym; | |
4439 | match m; | |
4440 | ||
4441 | head = tail = NULL; | |
4442 | ||
4443 | if (gfc_match_char ('(') != MATCH_YES) | |
4444 | { | |
4445 | if (null_flag) | |
4446 | goto ok; | |
4447 | return MATCH_NO; | |
4448 | } | |
4449 | ||
4450 | if (gfc_match_char (')') == MATCH_YES) | |
4451 | goto ok; | |
4452 | ||
4453 | for (;;) | |
4454 | { | |
4455 | if (gfc_match_char ('*') == MATCH_YES) | |
4456 | sym = NULL; | |
4457 | else | |
4458 | { | |
4459 | m = gfc_match_name (name); | |
4460 | if (m != MATCH_YES) | |
4461 | goto cleanup; | |
4462 | ||
4463 | if (gfc_get_symbol (name, NULL, &sym)) | |
4464 | goto cleanup; | |
4465 | } | |
4466 | ||
4467 | p = gfc_get_formal_arglist (); | |
4468 | ||
4469 | if (head == NULL) | |
4470 | head = tail = p; | |
4471 | else | |
4472 | { | |
4473 | tail->next = p; | |
4474 | tail = p; | |
4475 | } | |
4476 | ||
4477 | tail->sym = sym; | |
4478 | ||
4479 | /* We don't add the VARIABLE flavor because the name could be a | |
1a9745d2 | 4480 | dummy procedure. We don't apply these attributes to formal |
4481 | arguments of statement functions. */ | |
4ee9c684 | 4482 | if (sym != NULL && !st_flag |
950683ed | 4483 | && (gfc_add_dummy (&sym->attr, sym->name, NULL) == FAILURE |
4ee9c684 | 4484 | || gfc_missing_attr (&sym->attr, NULL) == FAILURE)) |
4485 | { | |
4486 | m = MATCH_ERROR; | |
4487 | goto cleanup; | |
4488 | } | |
4489 | ||
4490 | /* The name of a program unit can be in a different namespace, | |
1a9745d2 | 4491 | so check for it explicitly. After the statement is accepted, |
4492 | the name is checked for especially in gfc_get_symbol(). */ | |
4ee9c684 | 4493 | if (gfc_new_block != NULL && sym != NULL |
4494 | && strcmp (sym->name, gfc_new_block->name) == 0) | |
4495 | { | |
4496 | gfc_error ("Name '%s' at %C is the name of the procedure", | |
4497 | sym->name); | |
4498 | m = MATCH_ERROR; | |
4499 | goto cleanup; | |
4500 | } | |
4501 | ||
4502 | if (gfc_match_char (')') == MATCH_YES) | |
4503 | goto ok; | |
4504 | ||
4505 | m = gfc_match_char (','); | |
4506 | if (m != MATCH_YES) | |
4507 | { | |
4508 | gfc_error ("Unexpected junk in formal argument list at %C"); | |
4509 | goto cleanup; | |
4510 | } | |
4511 | } | |
4512 | ||
4513 | ok: | |
4514 | /* Check for duplicate symbols in the formal argument list. */ | |
4515 | if (head != NULL) | |
4516 | { | |
4517 | for (p = head; p->next; p = p->next) | |
4518 | { | |
4519 | if (p->sym == NULL) | |
4520 | continue; | |
4521 | ||
4522 | for (q = p->next; q; q = q->next) | |
4523 | if (p->sym == q->sym) | |
4524 | { | |
1a9745d2 | 4525 | gfc_error ("Duplicate symbol '%s' in formal argument list " |
4526 | "at %C", p->sym->name); | |
4ee9c684 | 4527 | |
4528 | m = MATCH_ERROR; | |
4529 | goto cleanup; | |
4530 | } | |
4531 | } | |
4532 | } | |
4533 | ||
f6d0e37a | 4534 | if (gfc_add_explicit_interface (progname, IFSRC_DECL, head, NULL) |
4535 | == FAILURE) | |
4ee9c684 | 4536 | { |
4537 | m = MATCH_ERROR; | |
4538 | goto cleanup; | |
4539 | } | |
4540 | ||
4541 | return MATCH_YES; | |
4542 | ||
4543 | cleanup: | |
4544 | gfc_free_formal_arglist (head); | |
4545 | return m; | |
4546 | } | |
4547 | ||
4548 | ||
4549 | /* Match a RESULT specification following a function declaration or | |
4550 | ENTRY statement. Also matches the end-of-statement. */ | |
4551 | ||
4552 | static match | |
f6d0e37a | 4553 | match_result (gfc_symbol *function, gfc_symbol **result) |
4ee9c684 | 4554 | { |
4555 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4556 | gfc_symbol *r; | |
4557 | match m; | |
4558 | ||
4559 | if (gfc_match (" result (") != MATCH_YES) | |
4560 | return MATCH_NO; | |
4561 | ||
4562 | m = gfc_match_name (name); | |
4563 | if (m != MATCH_YES) | |
4564 | return m; | |
4565 | ||
c5d33754 | 4566 | /* Get the right paren, and that's it because there could be the |
4567 | bind(c) attribute after the result clause. */ | |
4568 | if (gfc_match_char(')') != MATCH_YES) | |
4ee9c684 | 4569 | { |
c5d33754 | 4570 | /* TODO: should report the missing right paren here. */ |
4ee9c684 | 4571 | return MATCH_ERROR; |
4572 | } | |
4573 | ||
4574 | if (strcmp (function->name, name) == 0) | |
4575 | { | |
1a9745d2 | 4576 | gfc_error ("RESULT variable at %C must be different than function name"); |
4ee9c684 | 4577 | return MATCH_ERROR; |
4578 | } | |
4579 | ||
4580 | if (gfc_get_symbol (name, NULL, &r)) | |
4581 | return MATCH_ERROR; | |
4582 | ||
f6d3042b | 4583 | if (gfc_add_result (&r->attr, r->name, NULL) == FAILURE) |
4ee9c684 | 4584 | return MATCH_ERROR; |
4585 | ||
4586 | *result = r; | |
4587 | ||
4588 | return MATCH_YES; | |
4589 | } | |
4590 | ||
4591 | ||
c5d33754 | 4592 | /* Match a function suffix, which could be a combination of a result |
4593 | clause and BIND(C), either one, or neither. The draft does not | |
4594 | require them to come in a specific order. */ | |
4595 | ||
4596 | match | |
4597 | gfc_match_suffix (gfc_symbol *sym, gfc_symbol **result) | |
4598 | { | |
4599 | match is_bind_c; /* Found bind(c). */ | |
4600 | match is_result; /* Found result clause. */ | |
4601 | match found_match; /* Status of whether we've found a good match. */ | |
e0be6f02 | 4602 | char peek_char; /* Character we're going to peek at. */ |
75ae7f6c | 4603 | bool allow_binding_name; |
c5d33754 | 4604 | |
4605 | /* Initialize to having found nothing. */ | |
4606 | found_match = MATCH_NO; | |
4607 | is_bind_c = MATCH_NO; | |
4608 | is_result = MATCH_NO; | |
4609 | ||
4610 | /* Get the next char to narrow between result and bind(c). */ | |
4611 | gfc_gobble_whitespace (); | |
e0be6f02 | 4612 | peek_char = gfc_peek_ascii_char (); |
c5d33754 | 4613 | |
75ae7f6c | 4614 | /* C binding names are not allowed for internal procedures. */ |
4615 | if (gfc_current_state () == COMP_CONTAINS | |
4616 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
4617 | allow_binding_name = false; | |
4618 | else | |
4619 | allow_binding_name = true; | |
4620 | ||
c5d33754 | 4621 | switch (peek_char) |
4622 | { | |
4623 | case 'r': | |
4624 | /* Look for result clause. */ | |
4625 | is_result = match_result (sym, result); | |
4626 | if (is_result == MATCH_YES) | |
4627 | { | |
4628 | /* Now see if there is a bind(c) after it. */ | |
75ae7f6c | 4629 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
c5d33754 | 4630 | /* We've found the result clause and possibly bind(c). */ |
4631 | found_match = MATCH_YES; | |
4632 | } | |
4633 | else | |
4634 | /* This should only be MATCH_ERROR. */ | |
4635 | found_match = is_result; | |
4636 | break; | |
4637 | case 'b': | |
4638 | /* Look for bind(c) first. */ | |
75ae7f6c | 4639 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
c5d33754 | 4640 | if (is_bind_c == MATCH_YES) |
4641 | { | |
4642 | /* Now see if a result clause followed it. */ | |
4643 | is_result = match_result (sym, result); | |
4644 | found_match = MATCH_YES; | |
4645 | } | |
4646 | else | |
4647 | { | |
4648 | /* Should only be a MATCH_ERROR if we get here after seeing 'b'. */ | |
4649 | found_match = MATCH_ERROR; | |
4650 | } | |
4651 | break; | |
4652 | default: | |
4653 | gfc_error ("Unexpected junk after function declaration at %C"); | |
4654 | found_match = MATCH_ERROR; | |
4655 | break; | |
4656 | } | |
4657 | ||
c5d33754 | 4658 | if (is_bind_c == MATCH_YES) |
4518e961 | 4659 | { |
75ae7f6c | 4660 | /* Fortran 2008 draft allows BIND(C) for internal procedures. */ |
4518e961 | 4661 | if (gfc_current_state () == COMP_CONTAINS |
75ae7f6c | 4662 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
f25dbbf7 | 4663 | && gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
2dcae6c7 | 4664 | "at %L may not be specified for an internal " |
4665 | "procedure", &gfc_current_locus) | |
75ae7f6c | 4666 | == FAILURE) |
4667 | return MATCH_ERROR; | |
4668 | ||
4518e961 | 4669 | if (gfc_add_is_bind_c (&(sym->attr), sym->name, &gfc_current_locus, 1) |
4670 | == FAILURE) | |
4671 | return MATCH_ERROR; | |
4672 | } | |
c5d33754 | 4673 | |
4674 | return found_match; | |
4675 | } | |
4676 | ||
4677 | ||
1e057e9b | 4678 | /* Procedure pointer return value without RESULT statement: |
4679 | Add "hidden" result variable named "ppr@". */ | |
4680 | ||
4681 | static gfc_try | |
4682 | add_hidden_procptr_result (gfc_symbol *sym) | |
4683 | { | |
4684 | bool case1,case2; | |
4685 | ||
4686 | if (gfc_notification_std (GFC_STD_F2003) == ERROR) | |
4687 | return FAILURE; | |
4688 | ||
4689 | /* First usage case: PROCEDURE and EXTERNAL statements. */ | |
4690 | case1 = gfc_current_state () == COMP_FUNCTION && gfc_current_block () | |
4691 | && strcmp (gfc_current_block ()->name, sym->name) == 0 | |
4692 | && sym->attr.external; | |
4693 | /* Second usage case: INTERFACE statements. */ | |
4694 | case2 = gfc_current_state () == COMP_INTERFACE && gfc_state_stack->previous | |
4695 | && gfc_state_stack->previous->state == COMP_FUNCTION | |
4696 | && strcmp (gfc_state_stack->previous->sym->name, sym->name) == 0; | |
4697 | ||
4698 | if (case1 || case2) | |
4699 | { | |
4700 | gfc_symtree *stree; | |
4701 | if (case1) | |
36b0a1b0 | 4702 | gfc_get_sym_tree ("ppr@", gfc_current_ns, &stree, false); |
1e057e9b | 4703 | else if (case2) |
180a5dc0 | 4704 | { |
4705 | gfc_symtree *st2; | |
36b0a1b0 | 4706 | gfc_get_sym_tree ("ppr@", gfc_current_ns->parent, &stree, false); |
180a5dc0 | 4707 | st2 = gfc_new_symtree (&gfc_current_ns->sym_root, "ppr@"); |
4708 | st2->n.sym = stree->n.sym; | |
4709 | } | |
1e057e9b | 4710 | sym->result = stree->n.sym; |
4711 | ||
4712 | sym->result->attr.proc_pointer = sym->attr.proc_pointer; | |
4713 | sym->result->attr.pointer = sym->attr.pointer; | |
4714 | sym->result->attr.external = sym->attr.external; | |
4715 | sym->result->attr.referenced = sym->attr.referenced; | |
e40ac2fe | 4716 | sym->result->ts = sym->ts; |
1e057e9b | 4717 | sym->attr.proc_pointer = 0; |
4718 | sym->attr.pointer = 0; | |
4719 | sym->attr.external = 0; | |
4720 | if (sym->result->attr.external && sym->result->attr.pointer) | |
4721 | { | |
4722 | sym->result->attr.pointer = 0; | |
4723 | sym->result->attr.proc_pointer = 1; | |
4724 | } | |
4725 | ||
4726 | return gfc_add_result (&sym->result->attr, sym->result->name, NULL); | |
4727 | } | |
4728 | /* POINTER after PROCEDURE/EXTERNAL/INTERFACE statement. */ | |
4729 | else if (sym->attr.function && !sym->attr.external && sym->attr.pointer | |
4730 | && sym->result && sym->result != sym && sym->result->attr.external | |
4731 | && sym == gfc_current_ns->proc_name | |
4732 | && sym == sym->result->ns->proc_name | |
4733 | && strcmp ("ppr@", sym->result->name) == 0) | |
4734 | { | |
4735 | sym->result->attr.proc_pointer = 1; | |
4736 | sym->attr.pointer = 0; | |
4737 | return SUCCESS; | |
4738 | } | |
4739 | else | |
4740 | return FAILURE; | |
4741 | } | |
4742 | ||
4743 | ||
64e93293 | 4744 | /* Match the interface for a PROCEDURE declaration, |
4745 | including brackets (R1212). */ | |
af1a34ee | 4746 | |
4747 | static match | |
64e93293 | 4748 | match_procedure_interface (gfc_symbol **proc_if) |
af1a34ee | 4749 | { |
4750 | match m; | |
1eb2b542 | 4751 | gfc_symtree *st; |
af1a34ee | 4752 | locus old_loc, entry_loc; |
1eb2b542 | 4753 | gfc_namespace *old_ns = gfc_current_ns; |
4754 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
af1a34ee | 4755 | |
1eb2b542 | 4756 | old_loc = entry_loc = gfc_current_locus; |
af1a34ee | 4757 | gfc_clear_ts (¤t_ts); |
4758 | ||
4759 | if (gfc_match (" (") != MATCH_YES) | |
4760 | { | |
4761 | gfc_current_locus = entry_loc; | |
4762 | return MATCH_NO; | |
4763 | } | |
4764 | ||
4765 | /* Get the type spec. for the procedure interface. */ | |
4766 | old_loc = gfc_current_locus; | |
e8152f13 | 4767 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
fd1277c3 | 4768 | gfc_gobble_whitespace (); |
e0be6f02 | 4769 | if (m == MATCH_YES || (m == MATCH_NO && gfc_peek_ascii_char () == ')')) |
af1a34ee | 4770 | goto got_ts; |
4771 | ||
4772 | if (m == MATCH_ERROR) | |
4773 | return m; | |
4774 | ||
1eb2b542 | 4775 | /* Procedure interface is itself a procedure. */ |
af1a34ee | 4776 | gfc_current_locus = old_loc; |
1eb2b542 | 4777 | m = gfc_match_name (name); |
af1a34ee | 4778 | |
1eb2b542 | 4779 | /* First look to see if it is already accessible in the current |
4780 | namespace because it is use associated or contained. */ | |
4781 | st = NULL; | |
4782 | if (gfc_find_sym_tree (name, NULL, 0, &st)) | |
4783 | return MATCH_ERROR; | |
4784 | ||
4785 | /* If it is still not found, then try the parent namespace, if it | |
4786 | exists and create the symbol there if it is still not found. */ | |
4787 | if (gfc_current_ns->parent) | |
4788 | gfc_current_ns = gfc_current_ns->parent; | |
4789 | if (st == NULL && gfc_get_ha_sym_tree (name, &st)) | |
4790 | return MATCH_ERROR; | |
4791 | ||
4792 | gfc_current_ns = old_ns; | |
4793 | *proc_if = st->n.sym; | |
af1a34ee | 4794 | |
4795 | /* Various interface checks. */ | |
64e93293 | 4796 | if (*proc_if) |
af1a34ee | 4797 | { |
64e93293 | 4798 | (*proc_if)->refs++; |
74113644 | 4799 | /* Resolve interface if possible. That way, attr.procedure is only set |
4800 | if it is declared by a later procedure-declaration-stmt, which is | |
4801 | invalid per C1212. */ | |
64e93293 | 4802 | while ((*proc_if)->ts.interface) |
4803 | *proc_if = (*proc_if)->ts.interface; | |
74113644 | 4804 | |
64e93293 | 4805 | if ((*proc_if)->generic) |
af1a34ee | 4806 | { |
64e93293 | 4807 | gfc_error ("Interface '%s' at %C may not be generic", |
4808 | (*proc_if)->name); | |
af1a34ee | 4809 | return MATCH_ERROR; |
4810 | } | |
64e93293 | 4811 | if ((*proc_if)->attr.proc == PROC_ST_FUNCTION) |
af1a34ee | 4812 | { |
4813 | gfc_error ("Interface '%s' at %C may not be a statement function", | |
64e93293 | 4814 | (*proc_if)->name); |
af1a34ee | 4815 | return MATCH_ERROR; |
4816 | } | |
4817 | /* Handle intrinsic procedures. */ | |
64e93293 | 4818 | if (!((*proc_if)->attr.external || (*proc_if)->attr.use_assoc |
4819 | || (*proc_if)->attr.if_source == IFSRC_IFBODY) | |
4820 | && (gfc_is_intrinsic ((*proc_if), 0, gfc_current_locus) | |
4821 | || gfc_is_intrinsic ((*proc_if), 1, gfc_current_locus))) | |
4822 | (*proc_if)->attr.intrinsic = 1; | |
4823 | if ((*proc_if)->attr.intrinsic | |
4824 | && !gfc_intrinsic_actual_ok ((*proc_if)->name, 0)) | |
af1a34ee | 4825 | { |
4826 | gfc_error ("Intrinsic procedure '%s' not allowed " | |
64e93293 | 4827 | "in PROCEDURE statement at %C", (*proc_if)->name); |
af1a34ee | 4828 | return MATCH_ERROR; |
4829 | } | |
af1a34ee | 4830 | } |
4831 | ||
4832 | got_ts: | |
af1a34ee | 4833 | if (gfc_match (" )") != MATCH_YES) |
4834 | { | |
4835 | gfc_current_locus = entry_loc; | |
4836 | return MATCH_NO; | |
4837 | } | |
4838 | ||
64e93293 | 4839 | return MATCH_YES; |
4840 | } | |
4841 | ||
4842 | ||
4843 | /* Match a PROCEDURE declaration (R1211). */ | |
4844 | ||
4845 | static match | |
4846 | match_procedure_decl (void) | |
4847 | { | |
4848 | match m; | |
4849 | gfc_symbol *sym, *proc_if = NULL; | |
4850 | int num; | |
4851 | gfc_expr *initializer = NULL; | |
4852 | ||
4853 | /* Parse interface (with brackets). */ | |
4854 | m = match_procedure_interface (&proc_if); | |
4855 | if (m != MATCH_YES) | |
4856 | return m; | |
4857 | ||
4858 | /* Parse attributes (with colons). */ | |
af1a34ee | 4859 | m = match_attr_spec(); |
4860 | if (m == MATCH_ERROR) | |
4861 | return MATCH_ERROR; | |
4862 | ||
caa3ea40 | 4863 | if (proc_if && proc_if->attr.is_bind_c && !current_attr.is_bind_c) |
4864 | { | |
4865 | current_attr.is_bind_c = 1; | |
4866 | has_name_equals = 0; | |
4867 | curr_binding_label = NULL; | |
4868 | } | |
4869 | ||
af1a34ee | 4870 | /* Get procedure symbols. */ |
4871 | for(num=1;;num++) | |
4872 | { | |
af1a34ee | 4873 | m = gfc_match_symbol (&sym, 0); |
4874 | if (m == MATCH_NO) | |
4875 | goto syntax; | |
4876 | else if (m == MATCH_ERROR) | |
4877 | return m; | |
4878 | ||
4879 | /* Add current_attr to the symbol attributes. */ | |
4880 | if (gfc_copy_attr (&sym->attr, ¤t_attr, NULL) == FAILURE) | |
4881 | return MATCH_ERROR; | |
4882 | ||
4883 | if (sym->attr.is_bind_c) | |
4884 | { | |
4885 | /* Check for C1218. */ | |
4886 | if (!proc_if || !proc_if->attr.is_bind_c) | |
4887 | { | |
4888 | gfc_error ("BIND(C) attribute at %C requires " | |
4889 | "an interface with BIND(C)"); | |
4890 | return MATCH_ERROR; | |
4891 | } | |
4892 | /* Check for C1217. */ | |
4893 | if (has_name_equals && sym->attr.pointer) | |
4894 | { | |
4895 | gfc_error ("BIND(C) procedure with NAME may not have " | |
4896 | "POINTER attribute at %C"); | |
4897 | return MATCH_ERROR; | |
4898 | } | |
4899 | if (has_name_equals && sym->attr.dummy) | |
4900 | { | |
4901 | gfc_error ("Dummy procedure at %C may not have " | |
4902 | "BIND(C) attribute with NAME"); | |
4903 | return MATCH_ERROR; | |
4904 | } | |
4905 | /* Set binding label for BIND(C). */ | |
7b2060ba | 4906 | if (set_binding_label (&sym->binding_label, sym->name, num) |
4907 | != SUCCESS) | |
af1a34ee | 4908 | return MATCH_ERROR; |
4909 | } | |
4910 | ||
cad0ddcf | 4911 | if (gfc_add_external (&sym->attr, NULL) == FAILURE) |
af1a34ee | 4912 | return MATCH_ERROR; |
1e057e9b | 4913 | |
4914 | if (add_hidden_procptr_result (sym) == SUCCESS) | |
4915 | sym = sym->result; | |
4916 | ||
af1a34ee | 4917 | if (gfc_add_proc (&sym->attr, sym->name, NULL) == FAILURE) |
4918 | return MATCH_ERROR; | |
4919 | ||
4920 | /* Set interface. */ | |
4921 | if (proc_if != NULL) | |
f7d7a083 | 4922 | { |
13a834aa | 4923 | if (sym->ts.type != BT_UNKNOWN) |
4924 | { | |
4925 | gfc_error ("Procedure '%s' at %L already has basic type of %s", | |
4926 | sym->name, &gfc_current_locus, | |
4927 | gfc_basic_typename (sym->ts.type)); | |
4928 | return MATCH_ERROR; | |
4929 | } | |
2cd2bb5c | 4930 | sym->ts.interface = proc_if; |
f7d7a083 | 4931 | sym->attr.untyped = 1; |
180a5dc0 | 4932 | sym->attr.if_source = IFSRC_IFBODY; |
f7d7a083 | 4933 | } |
af1a34ee | 4934 | else if (current_ts.type != BT_UNKNOWN) |
4935 | { | |
13a834aa | 4936 | if (gfc_add_type (sym, ¤t_ts, &gfc_current_locus) == FAILURE) |
4937 | return MATCH_ERROR; | |
2cd2bb5c | 4938 | sym->ts.interface = gfc_new_symbol ("", gfc_current_ns); |
4939 | sym->ts.interface->ts = current_ts; | |
ce80bc5b | 4940 | sym->ts.interface->attr.flavor = FL_PROCEDURE; |
2cd2bb5c | 4941 | sym->ts.interface->attr.function = 1; |
ce80bc5b | 4942 | sym->attr.function = 1; |
180a5dc0 | 4943 | sym->attr.if_source = IFSRC_UNKNOWN; |
af1a34ee | 4944 | } |
4945 | ||
cad0ddcf | 4946 | if (gfc_match (" =>") == MATCH_YES) |
4947 | { | |
4948 | if (!current_attr.pointer) | |
4949 | { | |
4950 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
4951 | m = MATCH_ERROR; | |
4952 | goto cleanup; | |
4953 | } | |
4954 | ||
23d075f4 | 4955 | m = match_pointer_init (&initializer, 1); |
cad0ddcf | 4956 | if (m != MATCH_YES) |
4957 | goto cleanup; | |
4958 | ||
4959 | if (add_init_expr_to_sym (sym->name, &initializer, &gfc_current_locus) | |
4960 | != SUCCESS) | |
4961 | goto cleanup; | |
4962 | ||
4963 | } | |
4964 | ||
4965 | gfc_set_sym_referenced (sym); | |
4966 | ||
af1a34ee | 4967 | if (gfc_match_eos () == MATCH_YES) |
4968 | return MATCH_YES; | |
4969 | if (gfc_match_char (',') != MATCH_YES) | |
4970 | goto syntax; | |
4971 | } | |
4972 | ||
4973 | syntax: | |
4974 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
4975 | return MATCH_ERROR; | |
cad0ddcf | 4976 | |
4977 | cleanup: | |
4978 | /* Free stuff up and return. */ | |
4979 | gfc_free_expr (initializer); | |
4980 | return m; | |
af1a34ee | 4981 | } |
4982 | ||
4983 | ||
64e93293 | 4984 | static match |
4985 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc); | |
4986 | ||
4987 | ||
4988 | /* Match a procedure pointer component declaration (R445). */ | |
4989 | ||
4990 | static match | |
4991 | match_ppc_decl (void) | |
4992 | { | |
4993 | match m; | |
4994 | gfc_symbol *proc_if = NULL; | |
4995 | gfc_typespec ts; | |
4996 | int num; | |
4997 | gfc_component *c; | |
4998 | gfc_expr *initializer = NULL; | |
4999 | gfc_typebound_proc* tb; | |
5000 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5001 | ||
5002 | /* Parse interface (with brackets). */ | |
5003 | m = match_procedure_interface (&proc_if); | |
5004 | if (m != MATCH_YES) | |
5005 | goto syntax; | |
5006 | ||
5007 | /* Parse attributes. */ | |
5008 | tb = XCNEW (gfc_typebound_proc); | |
5009 | tb->where = gfc_current_locus; | |
5010 | m = match_binding_attributes (tb, false, true); | |
5011 | if (m == MATCH_ERROR) | |
5012 | return m; | |
5013 | ||
64e93293 | 5014 | gfc_clear_attr (¤t_attr); |
5015 | current_attr.procedure = 1; | |
5016 | current_attr.proc_pointer = 1; | |
5017 | current_attr.access = tb->access; | |
5018 | current_attr.flavor = FL_PROCEDURE; | |
5019 | ||
5020 | /* Match the colons (required). */ | |
5021 | if (gfc_match (" ::") != MATCH_YES) | |
5022 | { | |
5023 | gfc_error ("Expected '::' after binding-attributes at %C"); | |
5024 | return MATCH_ERROR; | |
5025 | } | |
5026 | ||
5027 | /* Check for C450. */ | |
5028 | if (!tb->nopass && proc_if == NULL) | |
5029 | { | |
5030 | gfc_error("NOPASS or explicit interface required at %C"); | |
5031 | return MATCH_ERROR; | |
5032 | } | |
5033 | ||
f25dbbf7 | 5034 | if (gfc_notify_std (GFC_STD_F2003, "Procedure pointer " |
8a026279 | 5035 | "component at %C") == FAILURE) |
5036 | return MATCH_ERROR; | |
5037 | ||
64e93293 | 5038 | /* Match PPC names. */ |
5039 | ts = current_ts; | |
5040 | for(num=1;;num++) | |
5041 | { | |
5042 | m = gfc_match_name (name); | |
5043 | if (m == MATCH_NO) | |
5044 | goto syntax; | |
5045 | else if (m == MATCH_ERROR) | |
5046 | return m; | |
5047 | ||
5048 | if (gfc_add_component (gfc_current_block (), name, &c) == FAILURE) | |
5049 | return MATCH_ERROR; | |
5050 | ||
5051 | /* Add current_attr to the symbol attributes. */ | |
5052 | if (gfc_copy_attr (&c->attr, ¤t_attr, NULL) == FAILURE) | |
5053 | return MATCH_ERROR; | |
5054 | ||
5055 | if (gfc_add_external (&c->attr, NULL) == FAILURE) | |
5056 | return MATCH_ERROR; | |
5057 | ||
5058 | if (gfc_add_proc (&c->attr, name, NULL) == FAILURE) | |
5059 | return MATCH_ERROR; | |
5060 | ||
fe9b08a2 | 5061 | c->tb = tb; |
5062 | ||
64e93293 | 5063 | /* Set interface. */ |
5064 | if (proc_if != NULL) | |
5065 | { | |
5066 | c->ts.interface = proc_if; | |
5067 | c->attr.untyped = 1; | |
5068 | c->attr.if_source = IFSRC_IFBODY; | |
5069 | } | |
5070 | else if (ts.type != BT_UNKNOWN) | |
5071 | { | |
5072 | c->ts = ts; | |
5073 | c->ts.interface = gfc_new_symbol ("", gfc_current_ns); | |
5074 | c->ts.interface->ts = ts; | |
ce80bc5b | 5075 | c->ts.interface->attr.flavor = FL_PROCEDURE; |
64e93293 | 5076 | c->ts.interface->attr.function = 1; |
ce80bc5b | 5077 | c->attr.function = 1; |
64e93293 | 5078 | c->attr.if_source = IFSRC_UNKNOWN; |
5079 | } | |
5080 | ||
5081 | if (gfc_match (" =>") == MATCH_YES) | |
5082 | { | |
23d075f4 | 5083 | m = match_pointer_init (&initializer, 1); |
64e93293 | 5084 | if (m != MATCH_YES) |
5085 | { | |
5086 | gfc_free_expr (initializer); | |
5087 | return m; | |
5088 | } | |
5089 | c->initializer = initializer; | |
5090 | } | |
5091 | ||
5092 | if (gfc_match_eos () == MATCH_YES) | |
5093 | return MATCH_YES; | |
5094 | if (gfc_match_char (',') != MATCH_YES) | |
5095 | goto syntax; | |
5096 | } | |
5097 | ||
5098 | syntax: | |
5099 | gfc_error ("Syntax error in procedure pointer component at %C"); | |
5100 | return MATCH_ERROR; | |
5101 | } | |
5102 | ||
5103 | ||
af1a34ee | 5104 | /* Match a PROCEDURE declaration inside an interface (R1206). */ |
5105 | ||
5106 | static match | |
5107 | match_procedure_in_interface (void) | |
5108 | { | |
5109 | match m; | |
5110 | gfc_symbol *sym; | |
5111 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
2b0f5dc8 | 5112 | locus old_locus; |
af1a34ee | 5113 | |
5114 | if (current_interface.type == INTERFACE_NAMELESS | |
5115 | || current_interface.type == INTERFACE_ABSTRACT) | |
5116 | { | |
5117 | gfc_error ("PROCEDURE at %C must be in a generic interface"); | |
5118 | return MATCH_ERROR; | |
5119 | } | |
5120 | ||
2b0f5dc8 | 5121 | /* Check if the F2008 optional double colon appears. */ |
5122 | gfc_gobble_whitespace (); | |
5123 | old_locus = gfc_current_locus; | |
5124 | if (gfc_match ("::") == MATCH_YES) | |
5125 | { | |
f25dbbf7 | 5126 | if (gfc_notify_std (GFC_STD_F2008, "double colon in " |
2b0f5dc8 | 5127 | "MODULE PROCEDURE statement at %L", &old_locus) |
5128 | == FAILURE) | |
5129 | return MATCH_ERROR; | |
5130 | } | |
5131 | else | |
5132 | gfc_current_locus = old_locus; | |
5133 | ||
af1a34ee | 5134 | for(;;) |
5135 | { | |
5136 | m = gfc_match_name (name); | |
5137 | if (m == MATCH_NO) | |
5138 | goto syntax; | |
5139 | else if (m == MATCH_ERROR) | |
5140 | return m; | |
5141 | if (gfc_get_symbol (name, gfc_current_ns->parent, &sym)) | |
5142 | return MATCH_ERROR; | |
5143 | ||
5144 | if (gfc_add_interface (sym) == FAILURE) | |
5145 | return MATCH_ERROR; | |
5146 | ||
af1a34ee | 5147 | if (gfc_match_eos () == MATCH_YES) |
5148 | break; | |
5149 | if (gfc_match_char (',') != MATCH_YES) | |
5150 | goto syntax; | |
5151 | } | |
5152 | ||
5153 | return MATCH_YES; | |
5154 | ||
5155 | syntax: | |
5156 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
5157 | return MATCH_ERROR; | |
5158 | } | |
5159 | ||
5160 | ||
5161 | /* General matcher for PROCEDURE declarations. */ | |
5162 | ||
7fd88f6e | 5163 | static match match_procedure_in_type (void); |
5164 | ||
af1a34ee | 5165 | match |
5166 | gfc_match_procedure (void) | |
5167 | { | |
5168 | match m; | |
5169 | ||
5170 | switch (gfc_current_state ()) | |
5171 | { | |
5172 | case COMP_NONE: | |
5173 | case COMP_PROGRAM: | |
5174 | case COMP_MODULE: | |
5175 | case COMP_SUBROUTINE: | |
5176 | case COMP_FUNCTION: | |
0b342e60 | 5177 | case COMP_BLOCK: |
af1a34ee | 5178 | m = match_procedure_decl (); |
5179 | break; | |
5180 | case COMP_INTERFACE: | |
5181 | m = match_procedure_in_interface (); | |
5182 | break; | |
5183 | case COMP_DERIVED: | |
64e93293 | 5184 | m = match_ppc_decl (); |
5185 | break; | |
7fd88f6e | 5186 | case COMP_DERIVED_CONTAINS: |
5187 | m = match_procedure_in_type (); | |
5188 | break; | |
af1a34ee | 5189 | default: |
5190 | return MATCH_NO; | |
5191 | } | |
5192 | ||
5193 | if (m != MATCH_YES) | |
5194 | return m; | |
5195 | ||
f25dbbf7 | 5196 | if (gfc_notify_std (GFC_STD_F2003, "PROCEDURE statement at %C") |
af1a34ee | 5197 | == FAILURE) |
5198 | return MATCH_ERROR; | |
5199 | ||
5200 | return m; | |
5201 | } | |
5202 | ||
5203 | ||
a34926ba | 5204 | /* Warn if a matched procedure has the same name as an intrinsic; this is |
5205 | simply a wrapper around gfc_warn_intrinsic_shadow that interprets the current | |
5206 | parser-state-stack to find out whether we're in a module. */ | |
5207 | ||
5208 | static void | |
5209 | warn_intrinsic_shadow (const gfc_symbol* sym, bool func) | |
5210 | { | |
5211 | bool in_module; | |
5212 | ||
5213 | in_module = (gfc_state_stack->previous | |
5214 | && gfc_state_stack->previous->state == COMP_MODULE); | |
5215 | ||
5216 | gfc_warn_intrinsic_shadow (sym, in_module, func); | |
5217 | } | |
5218 | ||
5219 | ||
4ee9c684 | 5220 | /* Match a function declaration. */ |
5221 | ||
5222 | match | |
5223 | gfc_match_function_decl (void) | |
5224 | { | |
5225 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5226 | gfc_symbol *sym, *result; | |
5227 | locus old_loc; | |
5228 | match m; | |
c5d33754 | 5229 | match suffix_match; |
5230 | match found_match; /* Status returned by match func. */ | |
4ee9c684 | 5231 | |
5232 | if (gfc_current_state () != COMP_NONE | |
5233 | && gfc_current_state () != COMP_INTERFACE | |
5234 | && gfc_current_state () != COMP_CONTAINS) | |
5235 | return MATCH_NO; | |
5236 | ||
5237 | gfc_clear_ts (¤t_ts); | |
5238 | ||
cbb9e6aa | 5239 | old_loc = gfc_current_locus; |
4ee9c684 | 5240 | |
077932f9 | 5241 | m = gfc_match_prefix (¤t_ts); |
4ee9c684 | 5242 | if (m != MATCH_YES) |
5243 | { | |
cbb9e6aa | 5244 | gfc_current_locus = old_loc; |
4ee9c684 | 5245 | return m; |
5246 | } | |
5247 | ||
5248 | if (gfc_match ("function% %n", name) != MATCH_YES) | |
5249 | { | |
cbb9e6aa | 5250 | gfc_current_locus = old_loc; |
4ee9c684 | 5251 | return MATCH_NO; |
5252 | } | |
d77f260f | 5253 | if (get_proc_name (name, &sym, false)) |
4ee9c684 | 5254 | return MATCH_ERROR; |
1e057e9b | 5255 | |
5256 | if (add_hidden_procptr_result (sym) == SUCCESS) | |
5257 | sym = sym->result; | |
5258 | ||
4ee9c684 | 5259 | gfc_new_block = sym; |
5260 | ||
5261 | m = gfc_match_formal_arglist (sym, 0, 0); | |
5262 | if (m == MATCH_NO) | |
9b435b6d | 5263 | { |
5264 | gfc_error ("Expected formal argument list in function " | |
1a9745d2 | 5265 | "definition at %C"); |
9b435b6d | 5266 | m = MATCH_ERROR; |
5267 | goto cleanup; | |
5268 | } | |
4ee9c684 | 5269 | else if (m == MATCH_ERROR) |
5270 | goto cleanup; | |
5271 | ||
5272 | result = NULL; | |
5273 | ||
c5d33754 | 5274 | /* According to the draft, the bind(c) and result clause can |
5275 | come in either order after the formal_arg_list (i.e., either | |
5276 | can be first, both can exist together or by themselves or neither | |
5277 | one). Therefore, the match_result can't match the end of the | |
5278 | string, and check for the bind(c) or result clause in either order. */ | |
5279 | found_match = gfc_match_eos (); | |
5280 | ||
5281 | /* Make sure that it isn't already declared as BIND(C). If it is, it | |
5282 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5283 | not allowed for procedures. */ | |
5284 | if (sym->attr.is_bind_c == 1) | |
5285 | { | |
5286 | sym->attr.is_bind_c = 0; | |
5287 | if (sym->old_symbol != NULL) | |
5288 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5289 | "variables or common blocks", | |
5290 | &(sym->old_symbol->declared_at)); | |
5291 | else | |
5292 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5293 | "variables or common blocks", &gfc_current_locus); | |
4ee9c684 | 5294 | } |
5295 | ||
c5d33754 | 5296 | if (found_match != MATCH_YES) |
4ee9c684 | 5297 | { |
c5d33754 | 5298 | /* If we haven't found the end-of-statement, look for a suffix. */ |
5299 | suffix_match = gfc_match_suffix (sym, &result); | |
5300 | if (suffix_match == MATCH_YES) | |
5301 | /* Need to get the eos now. */ | |
5302 | found_match = gfc_match_eos (); | |
5303 | else | |
5304 | found_match = suffix_match; | |
4ee9c684 | 5305 | } |
5306 | ||
c5d33754 | 5307 | if(found_match != MATCH_YES) |
5308 | m = MATCH_ERROR; | |
4ee9c684 | 5309 | else |
5310 | { | |
c5d33754 | 5311 | /* Make changes to the symbol. */ |
5312 | m = MATCH_ERROR; | |
5313 | ||
5314 | if (gfc_add_function (&sym->attr, sym->name, NULL) == FAILURE) | |
5315 | goto cleanup; | |
5316 | ||
5317 | if (gfc_missing_attr (&sym->attr, NULL) == FAILURE | |
5318 | || copy_prefix (&sym->attr, &sym->declared_at) == FAILURE) | |
5319 | goto cleanup; | |
4ee9c684 | 5320 | |
8d39570e | 5321 | /* Delay matching the function characteristics until after the |
077932f9 | 5322 | specification block by signalling kind=-1. */ |
8d39570e | 5323 | sym->declared_at = old_loc; |
5324 | if (current_ts.type != BT_UNKNOWN) | |
5325 | current_ts.kind = -1; | |
5326 | else | |
5327 | current_ts.kind = 0; | |
077932f9 | 5328 | |
c5d33754 | 5329 | if (result == NULL) |
5330 | { | |
0477d42d | 5331 | if (current_ts.type != BT_UNKNOWN |
5332 | && gfc_add_type (sym, ¤t_ts, &gfc_current_locus) == FAILURE) | |
5333 | goto cleanup; | |
c5d33754 | 5334 | sym->result = sym; |
5335 | } | |
5336 | else | |
5337 | { | |
0477d42d | 5338 | if (current_ts.type != BT_UNKNOWN |
5339 | && gfc_add_type (result, ¤t_ts, &gfc_current_locus) | |
5340 | == FAILURE) | |
5341 | goto cleanup; | |
c5d33754 | 5342 | sym->result = result; |
5343 | } | |
5344 | ||
a34926ba | 5345 | /* Warn if this procedure has the same name as an intrinsic. */ |
5346 | warn_intrinsic_shadow (sym, true); | |
5347 | ||
c5d33754 | 5348 | return MATCH_YES; |
5349 | } | |
4ee9c684 | 5350 | |
5351 | cleanup: | |
cbb9e6aa | 5352 | gfc_current_locus = old_loc; |
4ee9c684 | 5353 | return m; |
5354 | } | |
5355 | ||
1a9745d2 | 5356 | |
5357 | /* This is mostly a copy of parse.c(add_global_procedure) but modified to | |
5358 | pass the name of the entry, rather than the gfc_current_block name, and | |
5359 | to return false upon finding an existing global entry. */ | |
858f9894 | 5360 | |
5361 | static bool | |
1a9745d2 | 5362 | add_global_entry (const char *name, int sub) |
858f9894 | 5363 | { |
5364 | gfc_gsymbol *s; | |
8458f4ca | 5365 | enum gfc_symbol_type type; |
858f9894 | 5366 | |
5367 | s = gfc_get_gsymbol(name); | |
5b11d932 | 5368 | type = sub ? GSYM_SUBROUTINE : GSYM_FUNCTION; |
858f9894 | 5369 | |
5370 | if (s->defined | |
1a9745d2 | 5371 | || (s->type != GSYM_UNKNOWN |
5b11d932 | 5372 | && s->type != type)) |
cbbac028 | 5373 | gfc_global_used(s, NULL); |
858f9894 | 5374 | else |
5375 | { | |
5b11d932 | 5376 | s->type = type; |
858f9894 | 5377 | s->where = gfc_current_locus; |
5378 | s->defined = 1; | |
83aeedb9 | 5379 | s->ns = gfc_current_ns; |
858f9894 | 5380 | return true; |
5381 | } | |
5382 | return false; | |
5383 | } | |
4ee9c684 | 5384 | |
1a9745d2 | 5385 | |
4ee9c684 | 5386 | /* Match an ENTRY statement. */ |
5387 | ||
5388 | match | |
5389 | gfc_match_entry (void) | |
5390 | { | |
1b716045 | 5391 | gfc_symbol *proc; |
5392 | gfc_symbol *result; | |
5393 | gfc_symbol *entry; | |
4ee9c684 | 5394 | char name[GFC_MAX_SYMBOL_LEN + 1]; |
5395 | gfc_compile_state state; | |
5396 | match m; | |
1b716045 | 5397 | gfc_entry_list *el; |
7b5e1acc | 5398 | locus old_loc; |
d77f260f | 5399 | bool module_procedure; |
86f0974b | 5400 | char peek_char; |
5401 | match is_bind_c; | |
4ee9c684 | 5402 | |
5403 | m = gfc_match_name (name); | |
5404 | if (m != MATCH_YES) | |
5405 | return m; | |
5406 | ||
f25dbbf7 | 5407 | if (gfc_notify_std (GFC_STD_F2008_OBS, |
a3b81b0f | 5408 | "ENTRY statement at %C") == FAILURE) |
5409 | return MATCH_ERROR; | |
5410 | ||
1b716045 | 5411 | state = gfc_current_state (); |
ea37f786 | 5412 | if (state != COMP_SUBROUTINE && state != COMP_FUNCTION) |
1b716045 | 5413 | { |
ea37f786 | 5414 | switch (state) |
5415 | { | |
5416 | case COMP_PROGRAM: | |
5417 | gfc_error ("ENTRY statement at %C cannot appear within a PROGRAM"); | |
5418 | break; | |
5419 | case COMP_MODULE: | |
5420 | gfc_error ("ENTRY statement at %C cannot appear within a MODULE"); | |
5421 | break; | |
5422 | case COMP_BLOCK_DATA: | |
1a9745d2 | 5423 | gfc_error ("ENTRY statement at %C cannot appear within " |
5424 | "a BLOCK DATA"); | |
ea37f786 | 5425 | break; |
5426 | case COMP_INTERFACE: | |
1a9745d2 | 5427 | gfc_error ("ENTRY statement at %C cannot appear within " |
5428 | "an INTERFACE"); | |
ea37f786 | 5429 | break; |
5430 | case COMP_DERIVED: | |
1a9745d2 | 5431 | gfc_error ("ENTRY statement at %C cannot appear within " |
5432 | "a DERIVED TYPE block"); | |
ea37f786 | 5433 | break; |
5434 | case COMP_IF: | |
1a9745d2 | 5435 | gfc_error ("ENTRY statement at %C cannot appear within " |
5436 | "an IF-THEN block"); | |
ea37f786 | 5437 | break; |
5438 | case COMP_DO: | |
55ea8666 | 5439 | case COMP_DO_CONCURRENT: |
1a9745d2 | 5440 | gfc_error ("ENTRY statement at %C cannot appear within " |
5441 | "a DO block"); | |
ea37f786 | 5442 | break; |
5443 | case COMP_SELECT: | |
1a9745d2 | 5444 | gfc_error ("ENTRY statement at %C cannot appear within " |
5445 | "a SELECT block"); | |
ea37f786 | 5446 | break; |
5447 | case COMP_FORALL: | |
1a9745d2 | 5448 | gfc_error ("ENTRY statement at %C cannot appear within " |
5449 | "a FORALL block"); | |
ea37f786 | 5450 | break; |
5451 | case COMP_WHERE: | |
1a9745d2 | 5452 | gfc_error ("ENTRY statement at %C cannot appear within " |
5453 | "a WHERE block"); | |
ea37f786 | 5454 | break; |
5455 | case COMP_CONTAINS: | |
1a9745d2 | 5456 | gfc_error ("ENTRY statement at %C cannot appear within " |
5457 | "a contained subprogram"); | |
ea37f786 | 5458 | break; |
5459 | default: | |
5460 | gfc_internal_error ("gfc_match_entry(): Bad state"); | |
5461 | } | |
1b716045 | 5462 | return MATCH_ERROR; |
5463 | } | |
5464 | ||
d77f260f | 5465 | module_procedure = gfc_current_ns->parent != NULL |
1a9745d2 | 5466 | && gfc_current_ns->parent->proc_name |
5467 | && gfc_current_ns->parent->proc_name->attr.flavor | |
5468 | == FL_MODULE; | |
d77f260f | 5469 | |
1b716045 | 5470 | if (gfc_current_ns->parent != NULL |
5471 | && gfc_current_ns->parent->proc_name | |
d77f260f | 5472 | && !module_procedure) |
1b716045 | 5473 | { |
5474 | gfc_error("ENTRY statement at %C cannot appear in a " | |
5475 | "contained procedure"); | |
5476 | return MATCH_ERROR; | |
5477 | } | |
5478 | ||
d77f260f | 5479 | /* Module function entries need special care in get_proc_name |
5480 | because previous references within the function will have | |
5481 | created symbols attached to the current namespace. */ | |
5482 | if (get_proc_name (name, &entry, | |
5483 | gfc_current_ns->parent != NULL | |
c1e4695a | 5484 | && module_procedure)) |
4ee9c684 | 5485 | return MATCH_ERROR; |
5486 | ||
1b716045 | 5487 | proc = gfc_current_block (); |
5488 | ||
86f0974b | 5489 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
5490 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5491 | not allowed for procedures. */ | |
5492 | if (entry->attr.is_bind_c == 1) | |
5493 | { | |
5494 | entry->attr.is_bind_c = 0; | |
5495 | if (entry->old_symbol != NULL) | |
5496 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5497 | "variables or common blocks", | |
5498 | &(entry->old_symbol->declared_at)); | |
5499 | else | |
5500 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5501 | "variables or common blocks", &gfc_current_locus); | |
5502 | } | |
5503 | ||
5504 | /* Check what next non-whitespace character is so we can tell if there | |
5505 | is the required parens if we have a BIND(C). */ | |
5506 | gfc_gobble_whitespace (); | |
e0be6f02 | 5507 | peek_char = gfc_peek_ascii_char (); |
86f0974b | 5508 | |
1b716045 | 5509 | if (state == COMP_SUBROUTINE) |
4ee9c684 | 5510 | { |
950683ed | 5511 | /* An entry in a subroutine. */ |
8cafc742 | 5512 | if (!gfc_current_ns->parent && !add_global_entry (name, 1)) |
858f9894 | 5513 | return MATCH_ERROR; |
5514 | ||
4ee9c684 | 5515 | m = gfc_match_formal_arglist (entry, 0, 1); |
5516 | if (m != MATCH_YES) | |
5517 | return MATCH_ERROR; | |
5518 | ||
75ae7f6c | 5519 | /* Call gfc_match_bind_c with allow_binding_name = true as ENTRY can |
5520 | never be an internal procedure. */ | |
5521 | is_bind_c = gfc_match_bind_c (entry, true); | |
86f0974b | 5522 | if (is_bind_c == MATCH_ERROR) |
5523 | return MATCH_ERROR; | |
5524 | if (is_bind_c == MATCH_YES) | |
5525 | { | |
5526 | if (peek_char != '(') | |
5527 | { | |
5528 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
5529 | return MATCH_ERROR; | |
5530 | } | |
5531 | if (gfc_add_is_bind_c (&(entry->attr), entry->name, &(entry->declared_at), 1) | |
5532 | == FAILURE) | |
5533 | return MATCH_ERROR; | |
5534 | } | |
5535 | ||
950683ed | 5536 | if (gfc_add_entry (&entry->attr, entry->name, NULL) == FAILURE |
5537 | || gfc_add_subroutine (&entry->attr, entry->name, NULL) == FAILURE) | |
4ee9c684 | 5538 | return MATCH_ERROR; |
1b716045 | 5539 | } |
5540 | else | |
5541 | { | |
7b5e1acc | 5542 | /* An entry in a function. |
1a9745d2 | 5543 | We need to take special care because writing |
5544 | ENTRY f() | |
5545 | as | |
5546 | ENTRY f | |
5547 | is allowed, whereas | |
5548 | ENTRY f() RESULT (r) | |
5549 | can't be written as | |
5550 | ENTRY f RESULT (r). */ | |
8cafc742 | 5551 | if (!gfc_current_ns->parent && !add_global_entry (name, 0)) |
858f9894 | 5552 | return MATCH_ERROR; |
5553 | ||
7b5e1acc | 5554 | old_loc = gfc_current_locus; |
5555 | if (gfc_match_eos () == MATCH_YES) | |
5556 | { | |
5557 | gfc_current_locus = old_loc; | |
5558 | /* Match the empty argument list, and add the interface to | |
5559 | the symbol. */ | |
5560 | m = gfc_match_formal_arglist (entry, 0, 1); | |
5561 | } | |
5562 | else | |
5563 | m = gfc_match_formal_arglist (entry, 0, 0); | |
5564 | ||
4ee9c684 | 5565 | if (m != MATCH_YES) |
5566 | return MATCH_ERROR; | |
5567 | ||
4ee9c684 | 5568 | result = NULL; |
5569 | ||
5570 | if (gfc_match_eos () == MATCH_YES) | |
5571 | { | |
950683ed | 5572 | if (gfc_add_entry (&entry->attr, entry->name, NULL) == FAILURE |
5573 | || gfc_add_function (&entry->attr, entry->name, NULL) == FAILURE) | |
4ee9c684 | 5574 | return MATCH_ERROR; |
5575 | ||
c6871095 | 5576 | entry->result = entry; |
4ee9c684 | 5577 | } |
5578 | else | |
5579 | { | |
86f0974b | 5580 | m = gfc_match_suffix (entry, &result); |
4ee9c684 | 5581 | if (m == MATCH_NO) |
5582 | gfc_syntax_error (ST_ENTRY); | |
5583 | if (m != MATCH_YES) | |
5584 | return MATCH_ERROR; | |
5585 | ||
86f0974b | 5586 | if (result) |
5587 | { | |
5588 | if (gfc_add_result (&result->attr, result->name, NULL) == FAILURE | |
5589 | || gfc_add_entry (&entry->attr, result->name, NULL) == FAILURE | |
5590 | || gfc_add_function (&entry->attr, result->name, NULL) | |
5591 | == FAILURE) | |
5592 | return MATCH_ERROR; | |
5593 | entry->result = result; | |
5594 | } | |
5595 | else | |
5596 | { | |
5597 | if (gfc_add_entry (&entry->attr, entry->name, NULL) == FAILURE | |
5598 | || gfc_add_function (&entry->attr, entry->name, NULL) == FAILURE) | |
5599 | return MATCH_ERROR; | |
5600 | entry->result = entry; | |
5601 | } | |
4ee9c684 | 5602 | } |
4ee9c684 | 5603 | } |
5604 | ||
5605 | if (gfc_match_eos () != MATCH_YES) | |
5606 | { | |
5607 | gfc_syntax_error (ST_ENTRY); | |
5608 | return MATCH_ERROR; | |
5609 | } | |
5610 | ||
1b716045 | 5611 | entry->attr.recursive = proc->attr.recursive; |
5612 | entry->attr.elemental = proc->attr.elemental; | |
5613 | entry->attr.pure = proc->attr.pure; | |
4ee9c684 | 5614 | |
1b716045 | 5615 | el = gfc_get_entry_list (); |
5616 | el->sym = entry; | |
5617 | el->next = gfc_current_ns->entries; | |
5618 | gfc_current_ns->entries = el; | |
5619 | if (el->next) | |
5620 | el->id = el->next->id + 1; | |
5621 | else | |
5622 | el->id = 1; | |
4ee9c684 | 5623 | |
1b716045 | 5624 | new_st.op = EXEC_ENTRY; |
5625 | new_st.ext.entry = el; | |
5626 | ||
5627 | return MATCH_YES; | |
4ee9c684 | 5628 | } |
5629 | ||
5630 | ||
5631 | /* Match a subroutine statement, including optional prefixes. */ | |
5632 | ||
5633 | match | |
5634 | gfc_match_subroutine (void) | |
5635 | { | |
5636 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5637 | gfc_symbol *sym; | |
5638 | match m; | |
c5d33754 | 5639 | match is_bind_c; |
5640 | char peek_char; | |
75ae7f6c | 5641 | bool allow_binding_name; |
4ee9c684 | 5642 | |
5643 | if (gfc_current_state () != COMP_NONE | |
5644 | && gfc_current_state () != COMP_INTERFACE | |
5645 | && gfc_current_state () != COMP_CONTAINS) | |
5646 | return MATCH_NO; | |
5647 | ||
077932f9 | 5648 | m = gfc_match_prefix (NULL); |
4ee9c684 | 5649 | if (m != MATCH_YES) |
5650 | return m; | |
5651 | ||
5652 | m = gfc_match ("subroutine% %n", name); | |
5653 | if (m != MATCH_YES) | |
5654 | return m; | |
5655 | ||
d77f260f | 5656 | if (get_proc_name (name, &sym, false)) |
4ee9c684 | 5657 | return MATCH_ERROR; |
1e057e9b | 5658 | |
22c1d301 | 5659 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if |
5660 | the symbol existed before. */ | |
5661 | sym->declared_at = gfc_current_locus; | |
5662 | ||
1e057e9b | 5663 | if (add_hidden_procptr_result (sym) == SUCCESS) |
5664 | sym = sym->result; | |
5665 | ||
4ee9c684 | 5666 | gfc_new_block = sym; |
5667 | ||
c5d33754 | 5668 | /* Check what next non-whitespace character is so we can tell if there |
86f0974b | 5669 | is the required parens if we have a BIND(C). */ |
c5d33754 | 5670 | gfc_gobble_whitespace (); |
e0be6f02 | 5671 | peek_char = gfc_peek_ascii_char (); |
c5d33754 | 5672 | |
950683ed | 5673 | if (gfc_add_subroutine (&sym->attr, sym->name, NULL) == FAILURE) |
4ee9c684 | 5674 | return MATCH_ERROR; |
5675 | ||
5676 | if (gfc_match_formal_arglist (sym, 0, 1) != MATCH_YES) | |
5677 | return MATCH_ERROR; | |
5678 | ||
c5d33754 | 5679 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
5680 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
5681 | not allowed for procedures. */ | |
5682 | if (sym->attr.is_bind_c == 1) | |
5683 | { | |
5684 | sym->attr.is_bind_c = 0; | |
5685 | if (sym->old_symbol != NULL) | |
5686 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5687 | "variables or common blocks", | |
5688 | &(sym->old_symbol->declared_at)); | |
5689 | else | |
5690 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
5691 | "variables or common blocks", &gfc_current_locus); | |
5692 | } | |
75ae7f6c | 5693 | |
5694 | /* C binding names are not allowed for internal procedures. */ | |
5695 | if (gfc_current_state () == COMP_CONTAINS | |
5696 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
5697 | allow_binding_name = false; | |
5698 | else | |
5699 | allow_binding_name = true; | |
5700 | ||
c5d33754 | 5701 | /* Here, we are just checking if it has the bind(c) attribute, and if |
5702 | so, then we need to make sure it's all correct. If it doesn't, | |
5703 | we still need to continue matching the rest of the subroutine line. */ | |
75ae7f6c | 5704 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
c5d33754 | 5705 | if (is_bind_c == MATCH_ERROR) |
5706 | { | |
5707 | /* There was an attempt at the bind(c), but it was wrong. An | |
5708 | error message should have been printed w/in the gfc_match_bind_c | |
5709 | so here we'll just return the MATCH_ERROR. */ | |
5710 | return MATCH_ERROR; | |
5711 | } | |
5712 | ||
5713 | if (is_bind_c == MATCH_YES) | |
5714 | { | |
75ae7f6c | 5715 | /* The following is allowed in the Fortran 2008 draft. */ |
4518e961 | 5716 | if (gfc_current_state () == COMP_CONTAINS |
75ae7f6c | 5717 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
f25dbbf7 | 5718 | && gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
2dcae6c7 | 5719 | "at %L may not be specified for an internal " |
5720 | "procedure", &gfc_current_locus) | |
75ae7f6c | 5721 | == FAILURE) |
5722 | return MATCH_ERROR; | |
5723 | ||
c5d33754 | 5724 | if (peek_char != '(') |
5725 | { | |
5726 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
5727 | return MATCH_ERROR; | |
5728 | } | |
5729 | if (gfc_add_is_bind_c (&(sym->attr), sym->name, &(sym->declared_at), 1) | |
5730 | == FAILURE) | |
5731 | return MATCH_ERROR; | |
5732 | } | |
5733 | ||
4ee9c684 | 5734 | if (gfc_match_eos () != MATCH_YES) |
5735 | { | |
5736 | gfc_syntax_error (ST_SUBROUTINE); | |
5737 | return MATCH_ERROR; | |
5738 | } | |
5739 | ||
5740 | if (copy_prefix (&sym->attr, &sym->declared_at) == FAILURE) | |
5741 | return MATCH_ERROR; | |
5742 | ||
a34926ba | 5743 | /* Warn if it has the same name as an intrinsic. */ |
5744 | warn_intrinsic_shadow (sym, false); | |
5745 | ||
4ee9c684 | 5746 | return MATCH_YES; |
5747 | } | |
5748 | ||
5749 | ||
c5d33754 | 5750 | /* Match a BIND(C) specifier, with the optional 'name=' specifier if |
5751 | given, and set the binding label in either the given symbol (if not | |
a0527218 | 5752 | NULL), or in the current_ts. The symbol may be NULL because we may |
c5d33754 | 5753 | encounter the BIND(C) before the declaration itself. Return |
5754 | MATCH_NO if what we're looking at isn't a BIND(C) specifier, | |
5755 | MATCH_ERROR if it is a BIND(C) clause but an error was encountered, | |
5756 | or MATCH_YES if the specifier was correct and the binding label and | |
5757 | bind(c) fields were set correctly for the given symbol or the | |
75ae7f6c | 5758 | current_ts. If allow_binding_name is false, no binding name may be |
5759 | given. */ | |
c5d33754 | 5760 | |
5761 | match | |
75ae7f6c | 5762 | gfc_match_bind_c (gfc_symbol *sym, bool allow_binding_name) |
c5d33754 | 5763 | { |
5764 | /* binding label, if exists */ | |
1d8a57d8 | 5765 | const char* binding_label = NULL; |
c5d33754 | 5766 | match double_quote; |
5767 | match single_quote; | |
c5d33754 | 5768 | |
5769 | /* Initialize the flag that specifies whether we encountered a NAME= | |
5770 | specifier or not. */ | |
5771 | has_name_equals = 0; | |
5772 | ||
c5d33754 | 5773 | /* This much we have to be able to match, in this order, if |
5774 | there is a bind(c) label. */ | |
5775 | if (gfc_match (" bind ( c ") != MATCH_YES) | |
5776 | return MATCH_NO; | |
5777 | ||
5778 | /* Now see if there is a binding label, or if we've reached the | |
5779 | end of the bind(c) attribute without one. */ | |
5780 | if (gfc_match_char (',') == MATCH_YES) | |
5781 | { | |
5782 | if (gfc_match (" name = ") != MATCH_YES) | |
5783 | { | |
5784 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
5785 | "at %C"); | |
5786 | /* should give an error message here */ | |
5787 | return MATCH_ERROR; | |
5788 | } | |
5789 | ||
5790 | has_name_equals = 1; | |
5791 | ||
5792 | /* Get the opening quote. */ | |
5793 | double_quote = MATCH_YES; | |
5794 | single_quote = MATCH_YES; | |
5795 | double_quote = gfc_match_char ('"'); | |
5796 | if (double_quote != MATCH_YES) | |
5797 | single_quote = gfc_match_char ('\''); | |
5798 | if (double_quote != MATCH_YES && single_quote != MATCH_YES) | |
5799 | { | |
5800 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
5801 | "at %C"); | |
5802 | return MATCH_ERROR; | |
5803 | } | |
5804 | ||
5805 | /* Grab the binding label, using functions that will not lower | |
5806 | case the names automatically. */ | |
7b2060ba | 5807 | if (gfc_match_name_C (&binding_label) != MATCH_YES) |
c5d33754 | 5808 | return MATCH_ERROR; |
5809 | ||
5810 | /* Get the closing quotation. */ | |
5811 | if (double_quote == MATCH_YES) | |
5812 | { | |
5813 | if (gfc_match_char ('"') != MATCH_YES) | |
5814 | { | |
5815 | gfc_error ("Missing closing quote '\"' for binding label at %C"); | |
5816 | /* User started string with '"' so looked to match it. */ | |
5817 | return MATCH_ERROR; | |
5818 | } | |
5819 | } | |
5820 | else | |
5821 | { | |
5822 | if (gfc_match_char ('\'') != MATCH_YES) | |
5823 | { | |
5824 | gfc_error ("Missing closing quote '\'' for binding label at %C"); | |
5825 | /* User started string with "'" char. */ | |
5826 | return MATCH_ERROR; | |
5827 | } | |
5828 | } | |
5829 | } | |
5830 | ||
5831 | /* Get the required right paren. */ | |
5832 | if (gfc_match_char (')') != MATCH_YES) | |
5833 | { | |
5834 | gfc_error ("Missing closing paren for binding label at %C"); | |
5835 | return MATCH_ERROR; | |
5836 | } | |
5837 | ||
75ae7f6c | 5838 | if (has_name_equals && !allow_binding_name) |
5839 | { | |
5840 | gfc_error ("No binding name is allowed in BIND(C) at %C"); | |
5841 | return MATCH_ERROR; | |
5842 | } | |
5843 | ||
5844 | if (has_name_equals && sym != NULL && sym->attr.dummy) | |
5845 | { | |
5846 | gfc_error ("For dummy procedure %s, no binding name is " | |
5847 | "allowed in BIND(C) at %C", sym->name); | |
5848 | return MATCH_ERROR; | |
5849 | } | |
5850 | ||
5851 | ||
c5d33754 | 5852 | /* Save the binding label to the symbol. If sym is null, we're |
5853 | probably matching the typespec attributes of a declaration and | |
5854 | haven't gotten the name yet, and therefore, no symbol yet. */ | |
7b2060ba | 5855 | if (binding_label) |
c5d33754 | 5856 | { |
5857 | if (sym != NULL) | |
7b2060ba | 5858 | sym->binding_label = binding_label; |
c5d33754 | 5859 | else |
7b2060ba | 5860 | curr_binding_label = binding_label; |
c5d33754 | 5861 | } |
75ae7f6c | 5862 | else if (allow_binding_name) |
c5d33754 | 5863 | { |
5864 | /* No binding label, but if symbol isn't null, we | |
75ae7f6c | 5865 | can set the label for it here. |
5866 | If name="" or allow_binding_name is false, no C binding name is | |
5867 | created. */ | |
c5d33754 | 5868 | if (sym != NULL && sym->name != NULL && has_name_equals == 0) |
7b2060ba | 5869 | sym->binding_label = IDENTIFIER_POINTER (get_identifier (sym->name)); |
c5d33754 | 5870 | } |
94fa7146 | 5871 | |
5cf92482 | 5872 | if (has_name_equals && gfc_current_state () == COMP_INTERFACE |
5873 | && current_interface.type == INTERFACE_ABSTRACT) | |
94fa7146 | 5874 | { |
5875 | gfc_error ("NAME not allowed on BIND(C) for ABSTRACT INTERFACE at %C"); | |
5876 | return MATCH_ERROR; | |
5877 | } | |
5878 | ||
c5d33754 | 5879 | return MATCH_YES; |
5880 | } | |
5881 | ||
5882 | ||
231e961a | 5883 | /* Return nonzero if we're currently compiling a contained procedure. */ |
c0985832 | 5884 | |
5885 | static int | |
5886 | contained_procedure (void) | |
5887 | { | |
1c343287 | 5888 | gfc_state_data *s = gfc_state_stack; |
c0985832 | 5889 | |
1c343287 | 5890 | if ((s->state == COMP_SUBROUTINE || s->state == COMP_FUNCTION) |
5891 | && s->previous != NULL && s->previous->state == COMP_CONTAINS) | |
5892 | return 1; | |
c0985832 | 5893 | |
5894 | return 0; | |
5895 | } | |
5896 | ||
e14bee04 | 5897 | /* Set the kind of each enumerator. The kind is selected such that it is |
3b6a4b41 | 5898 | interoperable with the corresponding C enumeration type, making |
5899 | sure that -fshort-enums is honored. */ | |
5900 | ||
5901 | static void | |
5902 | set_enum_kind(void) | |
5903 | { | |
5904 | enumerator_history *current_history = NULL; | |
5905 | int kind; | |
5906 | int i; | |
5907 | ||
5908 | if (max_enum == NULL || enum_history == NULL) | |
5909 | return; | |
5910 | ||
6f092e31 | 5911 | if (!flag_short_enums) |
e14bee04 | 5912 | return; |
5913 | ||
3b6a4b41 | 5914 | i = 0; |
5915 | do | |
5916 | { | |
5917 | kind = gfc_integer_kinds[i++].kind; | |
5918 | } | |
e14bee04 | 5919 | while (kind < gfc_c_int_kind |
3b6a4b41 | 5920 | && gfc_check_integer_range (max_enum->initializer->value.integer, |
5921 | kind) != ARITH_OK); | |
5922 | ||
5923 | current_history = enum_history; | |
5924 | while (current_history != NULL) | |
5925 | { | |
5926 | current_history->sym->ts.kind = kind; | |
5927 | current_history = current_history->next; | |
5928 | } | |
5929 | } | |
5930 | ||
1a9745d2 | 5931 | |
4ee9c684 | 5932 | /* Match any of the various end-block statements. Returns the type of |
6a7084d7 | 5933 | END to the caller. The END INTERFACE, END IF, END DO, END SELECT |
5934 | and END BLOCK statements cannot be replaced by a single END statement. */ | |
4ee9c684 | 5935 | |
5936 | match | |
1a9745d2 | 5937 | gfc_match_end (gfc_statement *st) |
4ee9c684 | 5938 | { |
5939 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5940 | gfc_compile_state state; | |
5941 | locus old_loc; | |
5942 | const char *block_name; | |
5943 | const char *target; | |
c0985832 | 5944 | int eos_ok; |
4ee9c684 | 5945 | match m; |
5946 | ||
cbb9e6aa | 5947 | old_loc = gfc_current_locus; |
4ee9c684 | 5948 | if (gfc_match ("end") != MATCH_YES) |
5949 | return MATCH_NO; | |
5950 | ||
5951 | state = gfc_current_state (); | |
1a9745d2 | 5952 | block_name = gfc_current_block () == NULL |
5953 | ? NULL : gfc_current_block ()->name; | |
4ee9c684 | 5954 | |
d18a512a | 5955 | switch (state) |
4ee9c684 | 5956 | { |
d18a512a | 5957 | case COMP_ASSOCIATE: |
5958 | case COMP_BLOCK: | |
5ebb0bc6 | 5959 | if (!strncmp (block_name, "block@", strlen("block@"))) |
d18a512a | 5960 | block_name = NULL; |
5961 | break; | |
5962 | ||
5963 | case COMP_CONTAINS: | |
5964 | case COMP_DERIVED_CONTAINS: | |
4ee9c684 | 5965 | state = gfc_state_stack->previous->state; |
1a9745d2 | 5966 | block_name = gfc_state_stack->previous->sym == NULL |
5967 | ? NULL : gfc_state_stack->previous->sym->name; | |
d18a512a | 5968 | break; |
5969 | ||
5970 | default: | |
5971 | break; | |
4ee9c684 | 5972 | } |
5973 | ||
5974 | switch (state) | |
5975 | { | |
5976 | case COMP_NONE: | |
5977 | case COMP_PROGRAM: | |
5978 | *st = ST_END_PROGRAM; | |
5979 | target = " program"; | |
c0985832 | 5980 | eos_ok = 1; |
4ee9c684 | 5981 | break; |
5982 | ||
5983 | case COMP_SUBROUTINE: | |
5984 | *st = ST_END_SUBROUTINE; | |
5985 | target = " subroutine"; | |
c0985832 | 5986 | eos_ok = !contained_procedure (); |
4ee9c684 | 5987 | break; |
5988 | ||
5989 | case COMP_FUNCTION: | |
5990 | *st = ST_END_FUNCTION; | |
5991 | target = " function"; | |
c0985832 | 5992 | eos_ok = !contained_procedure (); |
4ee9c684 | 5993 | break; |
5994 | ||
5995 | case COMP_BLOCK_DATA: | |
5996 | *st = ST_END_BLOCK_DATA; | |
5997 | target = " block data"; | |
c0985832 | 5998 | eos_ok = 1; |
4ee9c684 | 5999 | break; |
6000 | ||
6001 | case COMP_MODULE: | |
6002 | *st = ST_END_MODULE; | |
6003 | target = " module"; | |
c0985832 | 6004 | eos_ok = 1; |
4ee9c684 | 6005 | break; |
6006 | ||
6007 | case COMP_INTERFACE: | |
6008 | *st = ST_END_INTERFACE; | |
6009 | target = " interface"; | |
c0985832 | 6010 | eos_ok = 0; |
4ee9c684 | 6011 | break; |
6012 | ||
6013 | case COMP_DERIVED: | |
7fd88f6e | 6014 | case COMP_DERIVED_CONTAINS: |
4ee9c684 | 6015 | *st = ST_END_TYPE; |
6016 | target = " type"; | |
c0985832 | 6017 | eos_ok = 0; |
4ee9c684 | 6018 | break; |
6019 | ||
d18a512a | 6020 | case COMP_ASSOCIATE: |
6021 | *st = ST_END_ASSOCIATE; | |
6022 | target = " associate"; | |
6023 | eos_ok = 0; | |
6024 | break; | |
6025 | ||
6a7084d7 | 6026 | case COMP_BLOCK: |
6027 | *st = ST_END_BLOCK; | |
6028 | target = " block"; | |
6029 | eos_ok = 0; | |
6030 | break; | |
6031 | ||
4ee9c684 | 6032 | case COMP_IF: |
6033 | *st = ST_ENDIF; | |
6034 | target = " if"; | |
c0985832 | 6035 | eos_ok = 0; |
4ee9c684 | 6036 | break; |
6037 | ||
6038 | case COMP_DO: | |
55ea8666 | 6039 | case COMP_DO_CONCURRENT: |
4ee9c684 | 6040 | *st = ST_ENDDO; |
6041 | target = " do"; | |
c0985832 | 6042 | eos_ok = 0; |
4ee9c684 | 6043 | break; |
6044 | ||
c6cd3066 | 6045 | case COMP_CRITICAL: |
6046 | *st = ST_END_CRITICAL; | |
6047 | target = " critical"; | |
6048 | eos_ok = 0; | |
6049 | break; | |
6050 | ||
4ee9c684 | 6051 | case COMP_SELECT: |
1de1b1a9 | 6052 | case COMP_SELECT_TYPE: |
4ee9c684 | 6053 | *st = ST_END_SELECT; |
6054 | target = " select"; | |
c0985832 | 6055 | eos_ok = 0; |
4ee9c684 | 6056 | break; |
6057 | ||
6058 | case COMP_FORALL: | |
6059 | *st = ST_END_FORALL; | |
6060 | target = " forall"; | |
c0985832 | 6061 | eos_ok = 0; |
4ee9c684 | 6062 | break; |
6063 | ||
6064 | case COMP_WHERE: | |
6065 | *st = ST_END_WHERE; | |
6066 | target = " where"; | |
c0985832 | 6067 | eos_ok = 0; |
4ee9c684 | 6068 | break; |
6069 | ||
3b6a4b41 | 6070 | case COMP_ENUM: |
6071 | *st = ST_END_ENUM; | |
6072 | target = " enum"; | |
6073 | eos_ok = 0; | |
6074 | last_initializer = NULL; | |
6075 | set_enum_kind (); | |
6076 | gfc_free_enum_history (); | |
6077 | break; | |
6078 | ||
4ee9c684 | 6079 | default: |
6080 | gfc_error ("Unexpected END statement at %C"); | |
6081 | goto cleanup; | |
6082 | } | |
6083 | ||
6084 | if (gfc_match_eos () == MATCH_YES) | |
6085 | { | |
4b20e9cf | 6086 | if (!eos_ok && (*st == ST_END_SUBROUTINE || *st == ST_END_FUNCTION)) |
6087 | { | |
f25dbbf7 | 6088 | if (gfc_notify_std (GFC_STD_F2008, "END statement " |
4b20e9cf | 6089 | "instead of %s statement at %L", |
6090 | gfc_ascii_statement (*st), &old_loc) == FAILURE) | |
6091 | goto cleanup; | |
6092 | } | |
6093 | else if (!eos_ok) | |
4ee9c684 | 6094 | { |
f6d0e37a | 6095 | /* We would have required END [something]. */ |
d197c9ee | 6096 | gfc_error ("%s statement expected at %L", |
6097 | gfc_ascii_statement (*st), &old_loc); | |
4ee9c684 | 6098 | goto cleanup; |
6099 | } | |
6100 | ||
6101 | return MATCH_YES; | |
6102 | } | |
6103 | ||
6104 | /* Verify that we've got the sort of end-block that we're expecting. */ | |
6105 | if (gfc_match (target) != MATCH_YES) | |
6106 | { | |
6107 | gfc_error ("Expecting %s statement at %C", gfc_ascii_statement (*st)); | |
6108 | goto cleanup; | |
6109 | } | |
6110 | ||
6111 | /* If we're at the end, make sure a block name wasn't required. */ | |
6112 | if (gfc_match_eos () == MATCH_YES) | |
6113 | { | |
6114 | ||
0d0ce415 | 6115 | if (*st != ST_ENDDO && *st != ST_ENDIF && *st != ST_END_SELECT |
c6cd3066 | 6116 | && *st != ST_END_FORALL && *st != ST_END_WHERE && *st != ST_END_BLOCK |
d18a512a | 6117 | && *st != ST_END_ASSOCIATE && *st != ST_END_CRITICAL) |
4ee9c684 | 6118 | return MATCH_YES; |
6119 | ||
6a7084d7 | 6120 | if (!block_name) |
4ee9c684 | 6121 | return MATCH_YES; |
6122 | ||
6123 | gfc_error ("Expected block name of '%s' in %s statement at %C", | |
6124 | block_name, gfc_ascii_statement (*st)); | |
6125 | ||
6126 | return MATCH_ERROR; | |
6127 | } | |
6128 | ||
6129 | /* END INTERFACE has a special handler for its several possible endings. */ | |
6130 | if (*st == ST_END_INTERFACE) | |
6131 | return gfc_match_end_interface (); | |
6132 | ||
f6d0e37a | 6133 | /* We haven't hit the end of statement, so what is left must be an |
6134 | end-name. */ | |
4ee9c684 | 6135 | m = gfc_match_space (); |
6136 | if (m == MATCH_YES) | |
6137 | m = gfc_match_name (name); | |
6138 | ||
6139 | if (m == MATCH_NO) | |
6140 | gfc_error ("Expected terminating name at %C"); | |
6141 | if (m != MATCH_YES) | |
6142 | goto cleanup; | |
6143 | ||
6144 | if (block_name == NULL) | |
6145 | goto syntax; | |
6146 | ||
1e057e9b | 6147 | if (strcmp (name, block_name) != 0 && strcmp (block_name, "ppr@") != 0) |
4ee9c684 | 6148 | { |
6149 | gfc_error ("Expected label '%s' for %s statement at %C", block_name, | |
6150 | gfc_ascii_statement (*st)); | |
6151 | goto cleanup; | |
6152 | } | |
1e057e9b | 6153 | /* Procedure pointer as function result. */ |
6154 | else if (strcmp (block_name, "ppr@") == 0 | |
6155 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) != 0) | |
6156 | { | |
6157 | gfc_error ("Expected label '%s' for %s statement at %C", | |
6158 | gfc_current_block ()->ns->proc_name->name, | |
6159 | gfc_ascii_statement (*st)); | |
6160 | goto cleanup; | |
6161 | } | |
4ee9c684 | 6162 | |
6163 | if (gfc_match_eos () == MATCH_YES) | |
6164 | return MATCH_YES; | |
6165 | ||
6166 | syntax: | |
6167 | gfc_syntax_error (*st); | |
6168 | ||
6169 | cleanup: | |
cbb9e6aa | 6170 | gfc_current_locus = old_loc; |
4ee9c684 | 6171 | return MATCH_ERROR; |
6172 | } | |
6173 | ||
6174 | ||
6175 | ||
6176 | /***************** Attribute declaration statements ****************/ | |
6177 | ||
6178 | /* Set the attribute of a single variable. */ | |
6179 | ||
6180 | static match | |
6181 | attr_decl1 (void) | |
6182 | { | |
6183 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6184 | gfc_array_spec *as; | |
6185 | gfc_symbol *sym; | |
6186 | locus var_locus; | |
6187 | match m; | |
6188 | ||
6189 | as = NULL; | |
6190 | ||
6191 | m = gfc_match_name (name); | |
6192 | if (m != MATCH_YES) | |
6193 | goto cleanup; | |
6194 | ||
36b0a1b0 | 6195 | if (find_special (name, &sym, false)) |
4ee9c684 | 6196 | return MATCH_ERROR; |
6197 | ||
f3e89339 | 6198 | if (check_function_name (name) == FAILURE) |
6199 | { | |
6200 | m = MATCH_ERROR; | |
6201 | goto cleanup; | |
6202 | } | |
6203 | ||
cbb9e6aa | 6204 | var_locus = gfc_current_locus; |
4ee9c684 | 6205 | |
6206 | /* Deal with possible array specification for certain attributes. */ | |
6207 | if (current_attr.dimension | |
aff518b0 | 6208 | || current_attr.codimension |
4ee9c684 | 6209 | || current_attr.allocatable |
6210 | || current_attr.pointer | |
6211 | || current_attr.target) | |
6212 | { | |
aff518b0 | 6213 | m = gfc_match_array_spec (&as, !current_attr.codimension, |
6214 | !current_attr.dimension | |
6215 | && !current_attr.pointer | |
6216 | && !current_attr.target); | |
4ee9c684 | 6217 | if (m == MATCH_ERROR) |
6218 | goto cleanup; | |
6219 | ||
6220 | if (current_attr.dimension && m == MATCH_NO) | |
6221 | { | |
1a9745d2 | 6222 | gfc_error ("Missing array specification at %L in DIMENSION " |
6223 | "statement", &var_locus); | |
4ee9c684 | 6224 | m = MATCH_ERROR; |
6225 | goto cleanup; | |
6226 | } | |
6227 | ||
13aebeb0 | 6228 | if (current_attr.dimension && sym->value) |
6229 | { | |
6230 | gfc_error ("Dimensions specified for %s at %L after its " | |
6231 | "initialisation", sym->name, &var_locus); | |
6232 | m = MATCH_ERROR; | |
6233 | goto cleanup; | |
6234 | } | |
6235 | ||
aff518b0 | 6236 | if (current_attr.codimension && m == MATCH_NO) |
6237 | { | |
6238 | gfc_error ("Missing array specification at %L in CODIMENSION " | |
6239 | "statement", &var_locus); | |
6240 | m = MATCH_ERROR; | |
6241 | goto cleanup; | |
6242 | } | |
6243 | ||
4ee9c684 | 6244 | if ((current_attr.allocatable || current_attr.pointer) |
6245 | && (m == MATCH_YES) && (as->type != AS_DEFERRED)) | |
6246 | { | |
1a9745d2 | 6247 | gfc_error ("Array specification must be deferred at %L", &var_locus); |
4ee9c684 | 6248 | m = MATCH_ERROR; |
6249 | goto cleanup; | |
6250 | } | |
6251 | } | |
6252 | ||
b3704193 | 6253 | /* Update symbol table. DIMENSION attribute is set in |
6254 | gfc_set_array_spec(). For CLASS variables, this must be applied | |
607ae689 | 6255 | to the first component, or '_data' field. */ |
a33fbb6f | 6256 | if (sym->ts.type == BT_CLASS && sym->ts.u.derived->attr.is_class) |
4ee9c684 | 6257 | { |
607ae689 | 6258 | if (gfc_copy_attr (&CLASS_DATA (sym)->attr, ¤t_attr, &var_locus) |
50b4b37b | 6259 | == FAILURE) |
b3704193 | 6260 | { |
6261 | m = MATCH_ERROR; | |
6262 | goto cleanup; | |
6263 | } | |
b3704193 | 6264 | } |
6265 | else | |
6266 | { | |
aff518b0 | 6267 | if (current_attr.dimension == 0 && current_attr.codimension == 0 |
6268 | && gfc_copy_attr (&sym->attr, ¤t_attr, &var_locus) == FAILURE) | |
b3704193 | 6269 | { |
6270 | m = MATCH_ERROR; | |
6271 | goto cleanup; | |
6272 | } | |
4ee9c684 | 6273 | } |
a33fbb6f | 6274 | |
fa102e56 | 6275 | if (sym->ts.type == BT_CLASS |
29dae2bf | 6276 | && gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as, false) == FAILURE) |
6277 | { | |
6278 | m = MATCH_ERROR; | |
6279 | goto cleanup; | |
6280 | } | |
4ee9c684 | 6281 | |
6282 | if (gfc_set_array_spec (sym, as, &var_locus) == FAILURE) | |
6283 | { | |
6284 | m = MATCH_ERROR; | |
6285 | goto cleanup; | |
6286 | } | |
e14bee04 | 6287 | |
b549d2a5 | 6288 | if (sym->attr.cray_pointee && sym->as != NULL) |
6289 | { | |
6290 | /* Fix the array spec. */ | |
6291 | m = gfc_mod_pointee_as (sym->as); | |
6292 | if (m == MATCH_ERROR) | |
6293 | goto cleanup; | |
6294 | } | |
4ee9c684 | 6295 | |
25dd7350 | 6296 | if (gfc_add_attribute (&sym->attr, &var_locus) == FAILURE) |
14efb9b7 | 6297 | { |
6298 | m = MATCH_ERROR; | |
6299 | goto cleanup; | |
6300 | } | |
6301 | ||
4ee9c684 | 6302 | if ((current_attr.external || current_attr.intrinsic) |
6303 | && sym->attr.flavor != FL_PROCEDURE | |
950683ed | 6304 | && gfc_add_flavor (&sym->attr, FL_PROCEDURE, sym->name, NULL) == FAILURE) |
4ee9c684 | 6305 | { |
6306 | m = MATCH_ERROR; | |
6307 | goto cleanup; | |
6308 | } | |
6309 | ||
1e057e9b | 6310 | add_hidden_procptr_result (sym); |
6311 | ||
4ee9c684 | 6312 | return MATCH_YES; |
6313 | ||
6314 | cleanup: | |
6315 | gfc_free_array_spec (as); | |
6316 | return m; | |
6317 | } | |
6318 | ||
6319 | ||
6320 | /* Generic attribute declaration subroutine. Used for attributes that | |
6321 | just have a list of names. */ | |
6322 | ||
6323 | static match | |
6324 | attr_decl (void) | |
6325 | { | |
6326 | match m; | |
6327 | ||
6328 | /* Gobble the optional double colon, by simply ignoring the result | |
6329 | of gfc_match(). */ | |
6330 | gfc_match (" ::"); | |
6331 | ||
6332 | for (;;) | |
6333 | { | |
6334 | m = attr_decl1 (); | |
6335 | if (m != MATCH_YES) | |
6336 | break; | |
6337 | ||
6338 | if (gfc_match_eos () == MATCH_YES) | |
6339 | { | |
6340 | m = MATCH_YES; | |
6341 | break; | |
6342 | } | |
6343 | ||
6344 | if (gfc_match_char (',') != MATCH_YES) | |
6345 | { | |
6346 | gfc_error ("Unexpected character in variable list at %C"); | |
6347 | m = MATCH_ERROR; | |
6348 | break; | |
6349 | } | |
6350 | } | |
6351 | ||
6352 | return m; | |
6353 | } | |
6354 | ||
6355 | ||
b549d2a5 | 6356 | /* This routine matches Cray Pointer declarations of the form: |
6357 | pointer ( <pointer>, <pointee> ) | |
6358 | or | |
e14bee04 | 6359 | pointer ( <pointer1>, <pointee1> ), ( <pointer2>, <pointee2> ), ... |
6360 | The pointer, if already declared, should be an integer. Otherwise, we | |
b549d2a5 | 6361 | set it as BT_INTEGER with kind gfc_index_integer_kind. The pointee may |
6362 | be either a scalar, or an array declaration. No space is allocated for | |
e14bee04 | 6363 | the pointee. For the statement |
b549d2a5 | 6364 | pointer (ipt, ar(10)) |
6365 | any subsequent uses of ar will be translated (in C-notation) as | |
e14bee04 | 6366 | ar(i) => ((<type> *) ipt)(i) |
b7bf3f81 | 6367 | After gimplification, pointee variable will disappear in the code. */ |
b549d2a5 | 6368 | |
6369 | static match | |
6370 | cray_pointer_decl (void) | |
6371 | { | |
6372 | match m; | |
aff518b0 | 6373 | gfc_array_spec *as = NULL; |
b549d2a5 | 6374 | gfc_symbol *cptr; /* Pointer symbol. */ |
6375 | gfc_symbol *cpte; /* Pointee symbol. */ | |
6376 | locus var_locus; | |
6377 | bool done = false; | |
6378 | ||
6379 | while (!done) | |
6380 | { | |
6381 | if (gfc_match_char ('(') != MATCH_YES) | |
6382 | { | |
6383 | gfc_error ("Expected '(' at %C"); | |
e14bee04 | 6384 | return MATCH_ERROR; |
b549d2a5 | 6385 | } |
e14bee04 | 6386 | |
b549d2a5 | 6387 | /* Match pointer. */ |
6388 | var_locus = gfc_current_locus; | |
6389 | gfc_clear_attr (¤t_attr); | |
6390 | gfc_add_cray_pointer (¤t_attr, &var_locus); | |
6391 | current_ts.type = BT_INTEGER; | |
6392 | current_ts.kind = gfc_index_integer_kind; | |
6393 | ||
e14bee04 | 6394 | m = gfc_match_symbol (&cptr, 0); |
b549d2a5 | 6395 | if (m != MATCH_YES) |
6396 | { | |
6397 | gfc_error ("Expected variable name at %C"); | |
6398 | return m; | |
6399 | } | |
e14bee04 | 6400 | |
b549d2a5 | 6401 | if (gfc_add_cray_pointer (&cptr->attr, &var_locus) == FAILURE) |
6402 | return MATCH_ERROR; | |
6403 | ||
e14bee04 | 6404 | gfc_set_sym_referenced (cptr); |
b549d2a5 | 6405 | |
6406 | if (cptr->ts.type == BT_UNKNOWN) /* Override the type, if necessary. */ | |
6407 | { | |
6408 | cptr->ts.type = BT_INTEGER; | |
e14bee04 | 6409 | cptr->ts.kind = gfc_index_integer_kind; |
b549d2a5 | 6410 | } |
6411 | else if (cptr->ts.type != BT_INTEGER) | |
6412 | { | |
7698a624 | 6413 | gfc_error ("Cray pointer at %C must be an integer"); |
b549d2a5 | 6414 | return MATCH_ERROR; |
6415 | } | |
6416 | else if (cptr->ts.kind < gfc_index_integer_kind) | |
6417 | gfc_warning ("Cray pointer at %C has %d bytes of precision;" | |
7698a624 | 6418 | " memory addresses require %d bytes", |
1a9745d2 | 6419 | cptr->ts.kind, gfc_index_integer_kind); |
b549d2a5 | 6420 | |
6421 | if (gfc_match_char (',') != MATCH_YES) | |
6422 | { | |
6423 | gfc_error ("Expected \",\" at %C"); | |
e14bee04 | 6424 | return MATCH_ERROR; |
b549d2a5 | 6425 | } |
6426 | ||
e14bee04 | 6427 | /* Match Pointee. */ |
b549d2a5 | 6428 | var_locus = gfc_current_locus; |
6429 | gfc_clear_attr (¤t_attr); | |
6430 | gfc_add_cray_pointee (¤t_attr, &var_locus); | |
6431 | current_ts.type = BT_UNKNOWN; | |
6432 | current_ts.kind = 0; | |
6433 | ||
6434 | m = gfc_match_symbol (&cpte, 0); | |
6435 | if (m != MATCH_YES) | |
6436 | { | |
6437 | gfc_error ("Expected variable name at %C"); | |
6438 | return m; | |
6439 | } | |
e14bee04 | 6440 | |
b549d2a5 | 6441 | /* Check for an optional array spec. */ |
aff518b0 | 6442 | m = gfc_match_array_spec (&as, true, false); |
b549d2a5 | 6443 | if (m == MATCH_ERROR) |
6444 | { | |
6445 | gfc_free_array_spec (as); | |
6446 | return m; | |
6447 | } | |
6448 | else if (m == MATCH_NO) | |
6449 | { | |
6450 | gfc_free_array_spec (as); | |
6451 | as = NULL; | |
6452 | } | |
6453 | ||
6454 | if (gfc_add_cray_pointee (&cpte->attr, &var_locus) == FAILURE) | |
6455 | return MATCH_ERROR; | |
6456 | ||
6457 | gfc_set_sym_referenced (cpte); | |
6458 | ||
6459 | if (cpte->as == NULL) | |
6460 | { | |
6461 | if (gfc_set_array_spec (cpte, as, &var_locus) == FAILURE) | |
6462 | gfc_internal_error ("Couldn't set Cray pointee array spec."); | |
6463 | } | |
6464 | else if (as != NULL) | |
6465 | { | |
7698a624 | 6466 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
b549d2a5 | 6467 | gfc_free_array_spec (as); |
6468 | return MATCH_ERROR; | |
6469 | } | |
6470 | ||
6471 | as = NULL; | |
6472 | ||
6473 | if (cpte->as != NULL) | |
6474 | { | |
6475 | /* Fix array spec. */ | |
6476 | m = gfc_mod_pointee_as (cpte->as); | |
6477 | if (m == MATCH_ERROR) | |
6478 | return m; | |
6479 | } | |
6480 | ||
6481 | /* Point the Pointee at the Pointer. */ | |
b7bf3f81 | 6482 | cpte->cp_pointer = cptr; |
b549d2a5 | 6483 | |
6484 | if (gfc_match_char (')') != MATCH_YES) | |
6485 | { | |
6486 | gfc_error ("Expected \")\" at %C"); | |
6487 | return MATCH_ERROR; | |
6488 | } | |
6489 | m = gfc_match_char (','); | |
6490 | if (m != MATCH_YES) | |
6491 | done = true; /* Stop searching for more declarations. */ | |
6492 | ||
6493 | } | |
6494 | ||
6495 | if (m == MATCH_ERROR /* Failed when trying to find ',' above. */ | |
6496 | || gfc_match_eos () != MATCH_YES) | |
6497 | { | |
6498 | gfc_error ("Expected \",\" or end of statement at %C"); | |
6499 | return MATCH_ERROR; | |
6500 | } | |
6501 | return MATCH_YES; | |
6502 | } | |
6503 | ||
6504 | ||
4ee9c684 | 6505 | match |
6506 | gfc_match_external (void) | |
6507 | { | |
6508 | ||
6509 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 6510 | current_attr.external = 1; |
4ee9c684 | 6511 | |
6512 | return attr_decl (); | |
6513 | } | |
6514 | ||
6515 | ||
4ee9c684 | 6516 | match |
6517 | gfc_match_intent (void) | |
6518 | { | |
6519 | sym_intent intent; | |
6520 | ||
6a7084d7 | 6521 | /* This is not allowed within a BLOCK construct! */ |
6522 | if (gfc_current_state () == COMP_BLOCK) | |
6523 | { | |
6524 | gfc_error ("INTENT is not allowed inside of BLOCK at %C"); | |
6525 | return MATCH_ERROR; | |
6526 | } | |
6527 | ||
4ee9c684 | 6528 | intent = match_intent_spec (); |
6529 | if (intent == INTENT_UNKNOWN) | |
6530 | return MATCH_ERROR; | |
6531 | ||
6532 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 6533 | current_attr.intent = intent; |
4ee9c684 | 6534 | |
6535 | return attr_decl (); | |
6536 | } | |
6537 | ||
6538 | ||
6539 | match | |
6540 | gfc_match_intrinsic (void) | |
6541 | { | |
6542 | ||
6543 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 6544 | current_attr.intrinsic = 1; |
4ee9c684 | 6545 | |
6546 | return attr_decl (); | |
6547 | } | |
6548 | ||
6549 | ||
6550 | match | |
6551 | gfc_match_optional (void) | |
6552 | { | |
6a7084d7 | 6553 | /* This is not allowed within a BLOCK construct! */ |
6554 | if (gfc_current_state () == COMP_BLOCK) | |
6555 | { | |
6556 | gfc_error ("OPTIONAL is not allowed inside of BLOCK at %C"); | |
6557 | return MATCH_ERROR; | |
6558 | } | |
4ee9c684 | 6559 | |
6560 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 6561 | current_attr.optional = 1; |
4ee9c684 | 6562 | |
6563 | return attr_decl (); | |
6564 | } | |
6565 | ||
6566 | ||
6567 | match | |
6568 | gfc_match_pointer (void) | |
6569 | { | |
b549d2a5 | 6570 | gfc_gobble_whitespace (); |
e0be6f02 | 6571 | if (gfc_peek_ascii_char () == '(') |
b549d2a5 | 6572 | { |
6573 | if (!gfc_option.flag_cray_pointer) | |
6574 | { | |
1a9745d2 | 6575 | gfc_error ("Cray pointer declaration at %C requires -fcray-pointer " |
6576 | "flag"); | |
b549d2a5 | 6577 | return MATCH_ERROR; |
6578 | } | |
6579 | return cray_pointer_decl (); | |
6580 | } | |
6581 | else | |
6582 | { | |
6583 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 6584 | current_attr.pointer = 1; |
b549d2a5 | 6585 | |
6586 | return attr_decl (); | |
6587 | } | |
4ee9c684 | 6588 | } |
6589 | ||
6590 | ||
6591 | match | |
6592 | gfc_match_allocatable (void) | |
6593 | { | |
4ee9c684 | 6594 | gfc_clear_attr (¤t_attr); |
14efb9b7 | 6595 | current_attr.allocatable = 1; |
4ee9c684 | 6596 | |
6597 | return attr_decl (); | |
6598 | } | |
6599 | ||
6600 | ||
aff518b0 | 6601 | match |
6602 | gfc_match_codimension (void) | |
6603 | { | |
6604 | gfc_clear_attr (¤t_attr); | |
6605 | current_attr.codimension = 1; | |
6606 | ||
6607 | return attr_decl (); | |
6608 | } | |
6609 | ||
6610 | ||
b3c3927c | 6611 | match |
6612 | gfc_match_contiguous (void) | |
6613 | { | |
f25dbbf7 | 6614 | if (gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS statement at %C") |
b3c3927c | 6615 | == FAILURE) |
6616 | return MATCH_ERROR; | |
6617 | ||
6618 | gfc_clear_attr (¤t_attr); | |
6619 | current_attr.contiguous = 1; | |
6620 | ||
6621 | return attr_decl (); | |
6622 | } | |
6623 | ||
6624 | ||
4ee9c684 | 6625 | match |
6626 | gfc_match_dimension (void) | |
6627 | { | |
4ee9c684 | 6628 | gfc_clear_attr (¤t_attr); |
14efb9b7 | 6629 | current_attr.dimension = 1; |
4ee9c684 | 6630 | |
6631 | return attr_decl (); | |
6632 | } | |
6633 | ||
6634 | ||
6635 | match | |
6636 | gfc_match_target (void) | |
6637 | { | |
4ee9c684 | 6638 | gfc_clear_attr (¤t_attr); |
14efb9b7 | 6639 | current_attr.target = 1; |
4ee9c684 | 6640 | |
6641 | return attr_decl (); | |
6642 | } | |
6643 | ||
6644 | ||
6645 | /* Match the list of entities being specified in a PUBLIC or PRIVATE | |
6646 | statement. */ | |
6647 | ||
6648 | static match | |
6649 | access_attr_decl (gfc_statement st) | |
6650 | { | |
6651 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6652 | interface_type type; | |
6653 | gfc_user_op *uop; | |
c2958b6b | 6654 | gfc_symbol *sym, *dt_sym; |
dcb1b019 | 6655 | gfc_intrinsic_op op; |
4ee9c684 | 6656 | match m; |
6657 | ||
6658 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
6659 | goto done; | |
6660 | ||
6661 | for (;;) | |
6662 | { | |
dcb1b019 | 6663 | m = gfc_match_generic_spec (&type, name, &op); |
4ee9c684 | 6664 | if (m == MATCH_NO) |
6665 | goto syntax; | |
6666 | if (m == MATCH_ERROR) | |
6667 | return MATCH_ERROR; | |
6668 | ||
6669 | switch (type) | |
6670 | { | |
6671 | case INTERFACE_NAMELESS: | |
94fa7146 | 6672 | case INTERFACE_ABSTRACT: |
4ee9c684 | 6673 | goto syntax; |
6674 | ||
6675 | case INTERFACE_GENERIC: | |
6676 | if (gfc_get_symbol (name, NULL, &sym)) | |
6677 | goto done; | |
6678 | ||
1a9745d2 | 6679 | if (gfc_add_access (&sym->attr, (st == ST_PUBLIC) |
6680 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
950683ed | 6681 | sym->name, NULL) == FAILURE) |
4ee9c684 | 6682 | return MATCH_ERROR; |
6683 | ||
c2958b6b | 6684 | if (sym->attr.generic && (dt_sym = gfc_find_dt_in_generic (sym)) |
6685 | && gfc_add_access (&dt_sym->attr, | |
6686 | (st == ST_PUBLIC) ? ACCESS_PUBLIC | |
6687 | : ACCESS_PRIVATE, | |
6688 | sym->name, NULL) == FAILURE) | |
6689 | return MATCH_ERROR; | |
6690 | ||
4ee9c684 | 6691 | break; |
6692 | ||
6693 | case INTERFACE_INTRINSIC_OP: | |
dcb1b019 | 6694 | if (gfc_current_ns->operator_access[op] == ACCESS_UNKNOWN) |
4ee9c684 | 6695 | { |
0c482c1d | 6696 | gfc_intrinsic_op other_op; |
6697 | ||
dcb1b019 | 6698 | gfc_current_ns->operator_access[op] = |
4ee9c684 | 6699 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; |
0c482c1d | 6700 | |
6701 | /* Handle the case if there is another op with the same | |
6702 | function, for INTRINSIC_EQ vs. INTRINSIC_EQ_OS and so on. */ | |
6703 | other_op = gfc_equivalent_op (op); | |
6704 | ||
6705 | if (other_op != INTRINSIC_NONE) | |
6706 | gfc_current_ns->operator_access[other_op] = | |
6707 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
6708 | ||
4ee9c684 | 6709 | } |
6710 | else | |
6711 | { | |
6712 | gfc_error ("Access specification of the %s operator at %C has " | |
dcb1b019 | 6713 | "already been specified", gfc_op2string (op)); |
4ee9c684 | 6714 | goto done; |
6715 | } | |
6716 | ||
6717 | break; | |
6718 | ||
6719 | case INTERFACE_USER_OP: | |
6720 | uop = gfc_get_uop (name); | |
6721 | ||
6722 | if (uop->access == ACCESS_UNKNOWN) | |
6723 | { | |
1a9745d2 | 6724 | uop->access = (st == ST_PUBLIC) |
6725 | ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
4ee9c684 | 6726 | } |
6727 | else | |
6728 | { | |
1a9745d2 | 6729 | gfc_error ("Access specification of the .%s. operator at %C " |
6730 | "has already been specified", sym->name); | |
4ee9c684 | 6731 | goto done; |
6732 | } | |
6733 | ||
6734 | break; | |
6735 | } | |
6736 | ||
6737 | if (gfc_match_char (',') == MATCH_NO) | |
6738 | break; | |
6739 | } | |
6740 | ||
6741 | if (gfc_match_eos () != MATCH_YES) | |
6742 | goto syntax; | |
6743 | return MATCH_YES; | |
6744 | ||
6745 | syntax: | |
6746 | gfc_syntax_error (st); | |
6747 | ||
6748 | done: | |
6749 | return MATCH_ERROR; | |
6750 | } | |
6751 | ||
6752 | ||
3ea52af3 | 6753 | match |
6754 | gfc_match_protected (void) | |
6755 | { | |
6756 | gfc_symbol *sym; | |
6757 | match m; | |
6758 | ||
6759 | if (gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
6760 | { | |
6761 | gfc_error ("PROTECTED at %C only allowed in specification " | |
6762 | "part of a module"); | |
6763 | return MATCH_ERROR; | |
6764 | ||
6765 | } | |
6766 | ||
f25dbbf7 | 6767 | if (gfc_notify_std (GFC_STD_F2003, "PROTECTED statement at %C") |
3ea52af3 | 6768 | == FAILURE) |
6769 | return MATCH_ERROR; | |
6770 | ||
6771 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
6772 | { | |
6773 | return MATCH_ERROR; | |
6774 | } | |
6775 | ||
6776 | if (gfc_match_eos () == MATCH_YES) | |
6777 | goto syntax; | |
6778 | ||
6779 | for(;;) | |
6780 | { | |
6781 | m = gfc_match_symbol (&sym, 0); | |
6782 | switch (m) | |
6783 | { | |
6784 | case MATCH_YES: | |
1a9745d2 | 6785 | if (gfc_add_protected (&sym->attr, sym->name, &gfc_current_locus) |
6786 | == FAILURE) | |
3ea52af3 | 6787 | return MATCH_ERROR; |
6788 | goto next_item; | |
6789 | ||
6790 | case MATCH_NO: | |
6791 | break; | |
6792 | ||
6793 | case MATCH_ERROR: | |
6794 | return MATCH_ERROR; | |
6795 | } | |
6796 | ||
6797 | next_item: | |
6798 | if (gfc_match_eos () == MATCH_YES) | |
6799 | break; | |
6800 | if (gfc_match_char (',') != MATCH_YES) | |
6801 | goto syntax; | |
6802 | } | |
6803 | ||
6804 | return MATCH_YES; | |
6805 | ||
6806 | syntax: | |
6807 | gfc_error ("Syntax error in PROTECTED statement at %C"); | |
6808 | return MATCH_ERROR; | |
6809 | } | |
6810 | ||
6811 | ||
a0527218 | 6812 | /* The PRIVATE statement is a bit weird in that it can be an attribute |
69b1505f | 6813 | declaration, but also works as a standalone statement inside of a |
4ee9c684 | 6814 | type declaration or a module. */ |
6815 | ||
6816 | match | |
1a9745d2 | 6817 | gfc_match_private (gfc_statement *st) |
4ee9c684 | 6818 | { |
6819 | ||
6820 | if (gfc_match ("private") != MATCH_YES) | |
6821 | return MATCH_NO; | |
6822 | ||
e14bee04 | 6823 | if (gfc_current_state () != COMP_MODULE |
7fd88f6e | 6824 | && !(gfc_current_state () == COMP_DERIVED |
6825 | && gfc_state_stack->previous | |
6826 | && gfc_state_stack->previous->state == COMP_MODULE) | |
6827 | && !(gfc_current_state () == COMP_DERIVED_CONTAINS | |
6828 | && gfc_state_stack->previous && gfc_state_stack->previous->previous | |
6829 | && gfc_state_stack->previous->previous->state == COMP_MODULE)) | |
e14bee04 | 6830 | { |
6831 | gfc_error ("PRIVATE statement at %C is only allowed in the " | |
6832 | "specification part of a module"); | |
6833 | return MATCH_ERROR; | |
6834 | } | |
6835 | ||
4ee9c684 | 6836 | if (gfc_current_state () == COMP_DERIVED) |
6837 | { | |
6838 | if (gfc_match_eos () == MATCH_YES) | |
6839 | { | |
6840 | *st = ST_PRIVATE; | |
6841 | return MATCH_YES; | |
6842 | } | |
6843 | ||
6844 | gfc_syntax_error (ST_PRIVATE); | |
6845 | return MATCH_ERROR; | |
6846 | } | |
6847 | ||
6848 | if (gfc_match_eos () == MATCH_YES) | |
6849 | { | |
6850 | *st = ST_PRIVATE; | |
6851 | return MATCH_YES; | |
6852 | } | |
6853 | ||
6854 | *st = ST_ATTR_DECL; | |
6855 | return access_attr_decl (ST_PRIVATE); | |
6856 | } | |
6857 | ||
6858 | ||
6859 | match | |
1a9745d2 | 6860 | gfc_match_public (gfc_statement *st) |
4ee9c684 | 6861 | { |
6862 | ||
6863 | if (gfc_match ("public") != MATCH_YES) | |
6864 | return MATCH_NO; | |
6865 | ||
e14bee04 | 6866 | if (gfc_current_state () != COMP_MODULE) |
6867 | { | |
6868 | gfc_error ("PUBLIC statement at %C is only allowed in the " | |
6869 | "specification part of a module"); | |
6870 | return MATCH_ERROR; | |
6871 | } | |
6872 | ||
4ee9c684 | 6873 | if (gfc_match_eos () == MATCH_YES) |
6874 | { | |
6875 | *st = ST_PUBLIC; | |
6876 | return MATCH_YES; | |
6877 | } | |
6878 | ||
6879 | *st = ST_ATTR_DECL; | |
6880 | return access_attr_decl (ST_PUBLIC); | |
6881 | } | |
6882 | ||
6883 | ||
6884 | /* Workhorse for gfc_match_parameter. */ | |
6885 | ||
6886 | static match | |
6887 | do_parm (void) | |
6888 | { | |
6889 | gfc_symbol *sym; | |
6890 | gfc_expr *init; | |
6891 | match m; | |
f16404e3 | 6892 | gfc_try t; |
4ee9c684 | 6893 | |
6894 | m = gfc_match_symbol (&sym, 0); | |
6895 | if (m == MATCH_NO) | |
6896 | gfc_error ("Expected variable name at %C in PARAMETER statement"); | |
6897 | ||
6898 | if (m != MATCH_YES) | |
6899 | return m; | |
6900 | ||
6901 | if (gfc_match_char ('=') == MATCH_NO) | |
6902 | { | |
6903 | gfc_error ("Expected = sign in PARAMETER statement at %C"); | |
6904 | return MATCH_ERROR; | |
6905 | } | |
6906 | ||
6907 | m = gfc_match_init_expr (&init); | |
6908 | if (m == MATCH_NO) | |
6909 | gfc_error ("Expected expression at %C in PARAMETER statement"); | |
6910 | if (m != MATCH_YES) | |
6911 | return m; | |
6912 | ||
6913 | if (sym->ts.type == BT_UNKNOWN | |
6914 | && gfc_set_default_type (sym, 1, NULL) == FAILURE) | |
6915 | { | |
6916 | m = MATCH_ERROR; | |
6917 | goto cleanup; | |
6918 | } | |
6919 | ||
6920 | if (gfc_check_assign_symbol (sym, init) == FAILURE | |
950683ed | 6921 | || gfc_add_flavor (&sym->attr, FL_PARAMETER, sym->name, NULL) == FAILURE) |
4ee9c684 | 6922 | { |
6923 | m = MATCH_ERROR; | |
6924 | goto cleanup; | |
6925 | } | |
6926 | ||
13aebeb0 | 6927 | if (sym->value) |
6928 | { | |
6929 | gfc_error ("Initializing already initialized variable at %C"); | |
6930 | m = MATCH_ERROR; | |
6931 | goto cleanup; | |
6932 | } | |
6933 | ||
f16404e3 | 6934 | t = add_init_expr_to_sym (sym->name, &init, &gfc_current_locus); |
6935 | return (t == SUCCESS) ? MATCH_YES : MATCH_ERROR; | |
4ee9c684 | 6936 | |
6937 | cleanup: | |
6938 | gfc_free_expr (init); | |
6939 | return m; | |
6940 | } | |
6941 | ||
6942 | ||
6943 | /* Match a parameter statement, with the weird syntax that these have. */ | |
6944 | ||
6945 | match | |
6946 | gfc_match_parameter (void) | |
6947 | { | |
6948 | match m; | |
6949 | ||
6950 | if (gfc_match_char ('(') == MATCH_NO) | |
6951 | return MATCH_NO; | |
6952 | ||
6953 | for (;;) | |
6954 | { | |
6955 | m = do_parm (); | |
6956 | if (m != MATCH_YES) | |
6957 | break; | |
6958 | ||
6959 | if (gfc_match (" )%t") == MATCH_YES) | |
6960 | break; | |
6961 | ||
6962 | if (gfc_match_char (',') != MATCH_YES) | |
6963 | { | |
6964 | gfc_error ("Unexpected characters in PARAMETER statement at %C"); | |
6965 | m = MATCH_ERROR; | |
6966 | break; | |
6967 | } | |
6968 | } | |
6969 | ||
6970 | return m; | |
6971 | } | |
6972 | ||
6973 | ||
6974 | /* Save statements have a special syntax. */ | |
6975 | ||
6976 | match | |
6977 | gfc_match_save (void) | |
6978 | { | |
82f5ee13 | 6979 | char n[GFC_MAX_SYMBOL_LEN+1]; |
6980 | gfc_common_head *c; | |
4ee9c684 | 6981 | gfc_symbol *sym; |
6982 | match m; | |
6983 | ||
6984 | if (gfc_match_eos () == MATCH_YES) | |
6985 | { | |
6986 | if (gfc_current_ns->seen_save) | |
6987 | { | |
1a9745d2 | 6988 | if (gfc_notify_std (GFC_STD_LEGACY, "Blanket SAVE statement at %C " |
6989 | "follows previous SAVE statement") | |
76e82f95 | 6990 | == FAILURE) |
6991 | return MATCH_ERROR; | |
4ee9c684 | 6992 | } |
6993 | ||
6994 | gfc_current_ns->save_all = gfc_current_ns->seen_save = 1; | |
6995 | return MATCH_YES; | |
6996 | } | |
6997 | ||
6998 | if (gfc_current_ns->save_all) | |
6999 | { | |
1a9745d2 | 7000 | if (gfc_notify_std (GFC_STD_LEGACY, "SAVE statement at %C follows " |
7001 | "blanket SAVE statement") | |
76e82f95 | 7002 | == FAILURE) |
7003 | return MATCH_ERROR; | |
4ee9c684 | 7004 | } |
7005 | ||
7006 | gfc_match (" ::"); | |
7007 | ||
7008 | for (;;) | |
7009 | { | |
7010 | m = gfc_match_symbol (&sym, 0); | |
7011 | switch (m) | |
7012 | { | |
7013 | case MATCH_YES: | |
23d075f4 | 7014 | if (gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, |
7015 | &gfc_current_locus) == FAILURE) | |
4ee9c684 | 7016 | return MATCH_ERROR; |
7017 | goto next_item; | |
7018 | ||
7019 | case MATCH_NO: | |
7020 | break; | |
7021 | ||
7022 | case MATCH_ERROR: | |
7023 | return MATCH_ERROR; | |
7024 | } | |
7025 | ||
82f5ee13 | 7026 | m = gfc_match (" / %n /", &n); |
4ee9c684 | 7027 | if (m == MATCH_ERROR) |
7028 | return MATCH_ERROR; | |
7029 | if (m == MATCH_NO) | |
7030 | goto syntax; | |
7031 | ||
403ddc45 | 7032 | c = gfc_get_common (n, 0); |
82f5ee13 | 7033 | c->saved = 1; |
7034 | ||
4ee9c684 | 7035 | gfc_current_ns->seen_save = 1; |
7036 | ||
7037 | next_item: | |
7038 | if (gfc_match_eos () == MATCH_YES) | |
7039 | break; | |
7040 | if (gfc_match_char (',') != MATCH_YES) | |
7041 | goto syntax; | |
7042 | } | |
7043 | ||
7044 | return MATCH_YES; | |
7045 | ||
7046 | syntax: | |
7047 | gfc_error ("Syntax error in SAVE statement at %C"); | |
7048 | return MATCH_ERROR; | |
7049 | } | |
7050 | ||
7051 | ||
8f6339b6 | 7052 | match |
7053 | gfc_match_value (void) | |
7054 | { | |
7055 | gfc_symbol *sym; | |
7056 | match m; | |
7057 | ||
6a7084d7 | 7058 | /* This is not allowed within a BLOCK construct! */ |
7059 | if (gfc_current_state () == COMP_BLOCK) | |
7060 | { | |
7061 | gfc_error ("VALUE is not allowed inside of BLOCK at %C"); | |
7062 | return MATCH_ERROR; | |
7063 | } | |
7064 | ||
f25dbbf7 | 7065 | if (gfc_notify_std (GFC_STD_F2003, "VALUE statement at %C") |
8f6339b6 | 7066 | == FAILURE) |
7067 | return MATCH_ERROR; | |
7068 | ||
7069 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7070 | { | |
7071 | return MATCH_ERROR; | |
7072 | } | |
7073 | ||
7074 | if (gfc_match_eos () == MATCH_YES) | |
7075 | goto syntax; | |
7076 | ||
7077 | for(;;) | |
7078 | { | |
7079 | m = gfc_match_symbol (&sym, 0); | |
7080 | switch (m) | |
7081 | { | |
7082 | case MATCH_YES: | |
1a9745d2 | 7083 | if (gfc_add_value (&sym->attr, sym->name, &gfc_current_locus) |
7084 | == FAILURE) | |
8f6339b6 | 7085 | return MATCH_ERROR; |
7086 | goto next_item; | |
7087 | ||
7088 | case MATCH_NO: | |
7089 | break; | |
7090 | ||
7091 | case MATCH_ERROR: | |
7092 | return MATCH_ERROR; | |
7093 | } | |
7094 | ||
7095 | next_item: | |
7096 | if (gfc_match_eos () == MATCH_YES) | |
7097 | break; | |
7098 | if (gfc_match_char (',') != MATCH_YES) | |
7099 | goto syntax; | |
7100 | } | |
7101 | ||
7102 | return MATCH_YES; | |
7103 | ||
7104 | syntax: | |
7105 | gfc_error ("Syntax error in VALUE statement at %C"); | |
7106 | return MATCH_ERROR; | |
7107 | } | |
7108 | ||
f6d0e37a | 7109 | |
ef814c81 | 7110 | match |
7111 | gfc_match_volatile (void) | |
7112 | { | |
7113 | gfc_symbol *sym; | |
7114 | match m; | |
7115 | ||
f25dbbf7 | 7116 | if (gfc_notify_std (GFC_STD_F2003, "VOLATILE statement at %C") |
ef814c81 | 7117 | == FAILURE) |
7118 | return MATCH_ERROR; | |
7119 | ||
7120 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7121 | { | |
7122 | return MATCH_ERROR; | |
7123 | } | |
7124 | ||
7125 | if (gfc_match_eos () == MATCH_YES) | |
7126 | goto syntax; | |
7127 | ||
7128 | for(;;) | |
7129 | { | |
2f241857 | 7130 | /* VOLATILE is special because it can be added to host-associated |
aff518b0 | 7131 | symbols locally. Except for coarrays. */ |
2f241857 | 7132 | m = gfc_match_symbol (&sym, 1); |
ef814c81 | 7133 | switch (m) |
7134 | { | |
7135 | case MATCH_YES: | |
aff518b0 | 7136 | /* F2008, C560+C561. VOLATILE for host-/use-associated variable or |
7137 | for variable in a BLOCK which is defined outside of the BLOCK. */ | |
7138 | if (sym->ns != gfc_current_ns && sym->attr.codimension) | |
7139 | { | |
7140 | gfc_error ("Specifying VOLATILE for coarray variable '%s' at " | |
7141 | "%C, which is use-/host-associated", sym->name); | |
7142 | return MATCH_ERROR; | |
7143 | } | |
1a9745d2 | 7144 | if (gfc_add_volatile (&sym->attr, sym->name, &gfc_current_locus) |
7145 | == FAILURE) | |
ef814c81 | 7146 | return MATCH_ERROR; |
7147 | goto next_item; | |
7148 | ||
7149 | case MATCH_NO: | |
7150 | break; | |
7151 | ||
7152 | case MATCH_ERROR: | |
7153 | return MATCH_ERROR; | |
7154 | } | |
7155 | ||
7156 | next_item: | |
7157 | if (gfc_match_eos () == MATCH_YES) | |
7158 | break; | |
7159 | if (gfc_match_char (',') != MATCH_YES) | |
7160 | goto syntax; | |
7161 | } | |
7162 | ||
7163 | return MATCH_YES; | |
7164 | ||
7165 | syntax: | |
7166 | gfc_error ("Syntax error in VOLATILE statement at %C"); | |
7167 | return MATCH_ERROR; | |
7168 | } | |
7169 | ||
7170 | ||
738928be | 7171 | match |
7172 | gfc_match_asynchronous (void) | |
7173 | { | |
7174 | gfc_symbol *sym; | |
7175 | match m; | |
7176 | ||
f25dbbf7 | 7177 | if (gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS statement at %C") |
738928be | 7178 | == FAILURE) |
7179 | return MATCH_ERROR; | |
7180 | ||
7181 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
7182 | { | |
7183 | return MATCH_ERROR; | |
7184 | } | |
7185 | ||
7186 | if (gfc_match_eos () == MATCH_YES) | |
7187 | goto syntax; | |
7188 | ||
7189 | for(;;) | |
7190 | { | |
7191 | /* ASYNCHRONOUS is special because it can be added to host-associated | |
7192 | symbols locally. */ | |
7193 | m = gfc_match_symbol (&sym, 1); | |
7194 | switch (m) | |
7195 | { | |
7196 | case MATCH_YES: | |
7197 | if (gfc_add_asynchronous (&sym->attr, sym->name, &gfc_current_locus) | |
7198 | == FAILURE) | |
7199 | return MATCH_ERROR; | |
7200 | goto next_item; | |
7201 | ||
7202 | case MATCH_NO: | |
7203 | break; | |
7204 | ||
7205 | case MATCH_ERROR: | |
7206 | return MATCH_ERROR; | |
7207 | } | |
7208 | ||
7209 | next_item: | |
7210 | if (gfc_match_eos () == MATCH_YES) | |
7211 | break; | |
7212 | if (gfc_match_char (',') != MATCH_YES) | |
7213 | goto syntax; | |
7214 | } | |
7215 | ||
7216 | return MATCH_YES; | |
7217 | ||
7218 | syntax: | |
7219 | gfc_error ("Syntax error in ASYNCHRONOUS statement at %C"); | |
7220 | return MATCH_ERROR; | |
7221 | } | |
7222 | ||
7223 | ||
4ee9c684 | 7224 | /* Match a module procedure statement. Note that we have to modify |
7225 | symbols in the parent's namespace because the current one was there | |
89d91d02 | 7226 | to receive symbols that are in an interface's formal argument list. */ |
4ee9c684 | 7227 | |
7228 | match | |
7229 | gfc_match_modproc (void) | |
7230 | { | |
7231 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7232 | gfc_symbol *sym; | |
7233 | match m; | |
d920fb76 | 7234 | locus old_locus; |
63d42079 | 7235 | gfc_namespace *module_ns; |
94ce9f74 | 7236 | gfc_interface *old_interface_head, *interface; |
4ee9c684 | 7237 | |
7238 | if (gfc_state_stack->state != COMP_INTERFACE | |
7239 | || gfc_state_stack->previous == NULL | |
5cf92482 | 7240 | || current_interface.type == INTERFACE_NAMELESS |
7241 | || current_interface.type == INTERFACE_ABSTRACT) | |
4ee9c684 | 7242 | { |
1a9745d2 | 7243 | gfc_error ("MODULE PROCEDURE at %C must be in a generic module " |
7244 | "interface"); | |
4ee9c684 | 7245 | return MATCH_ERROR; |
7246 | } | |
7247 | ||
63d42079 | 7248 | module_ns = gfc_current_ns->parent; |
7249 | for (; module_ns; module_ns = module_ns->parent) | |
15ca3865 | 7250 | if (module_ns->proc_name->attr.flavor == FL_MODULE |
7251 | || module_ns->proc_name->attr.flavor == FL_PROGRAM | |
7252 | || (module_ns->proc_name->attr.flavor == FL_PROCEDURE | |
7253 | && !module_ns->proc_name->attr.contained)) | |
63d42079 | 7254 | break; |
7255 | ||
7256 | if (module_ns == NULL) | |
7257 | return MATCH_ERROR; | |
7258 | ||
94ce9f74 | 7259 | /* Store the current state of the interface. We will need it if we |
7260 | end up with a syntax error and need to recover. */ | |
7261 | old_interface_head = gfc_current_interface_head (); | |
7262 | ||
d920fb76 | 7263 | /* Check if the F2008 optional double colon appears. */ |
7264 | gfc_gobble_whitespace (); | |
7265 | old_locus = gfc_current_locus; | |
7266 | if (gfc_match ("::") == MATCH_YES) | |
7267 | { | |
f25dbbf7 | 7268 | if (gfc_notify_std (GFC_STD_F2008, "double colon in " |
d920fb76 | 7269 | "MODULE PROCEDURE statement at %L", &old_locus) |
7270 | == FAILURE) | |
7271 | return MATCH_ERROR; | |
7272 | } | |
7273 | else | |
7274 | gfc_current_locus = old_locus; | |
7275 | ||
4ee9c684 | 7276 | for (;;) |
7277 | { | |
94ce9f74 | 7278 | bool last = false; |
d920fb76 | 7279 | old_locus = gfc_current_locus; |
94ce9f74 | 7280 | |
4ee9c684 | 7281 | m = gfc_match_name (name); |
7282 | if (m == MATCH_NO) | |
7283 | goto syntax; | |
7284 | if (m != MATCH_YES) | |
7285 | return MATCH_ERROR; | |
7286 | ||
94ce9f74 | 7287 | /* Check for syntax error before starting to add symbols to the |
7288 | current namespace. */ | |
7289 | if (gfc_match_eos () == MATCH_YES) | |
7290 | last = true; | |
d920fb76 | 7291 | |
94ce9f74 | 7292 | if (!last && gfc_match_char (',') != MATCH_YES) |
7293 | goto syntax; | |
7294 | ||
7295 | /* Now we're sure the syntax is valid, we process this item | |
7296 | further. */ | |
63d42079 | 7297 | if (gfc_get_symbol (name, module_ns, &sym)) |
4ee9c684 | 7298 | return MATCH_ERROR; |
7299 | ||
15ca3865 | 7300 | if (sym->attr.intrinsic) |
7301 | { | |
7302 | gfc_error ("Intrinsic procedure at %L cannot be a MODULE " | |
7303 | "PROCEDURE", &old_locus); | |
7304 | return MATCH_ERROR; | |
7305 | } | |
7306 | ||
4ee9c684 | 7307 | if (sym->attr.proc != PROC_MODULE |
950683ed | 7308 | && gfc_add_procedure (&sym->attr, PROC_MODULE, |
7309 | sym->name, NULL) == FAILURE) | |
4ee9c684 | 7310 | return MATCH_ERROR; |
7311 | ||
7312 | if (gfc_add_interface (sym) == FAILURE) | |
7313 | return MATCH_ERROR; | |
7314 | ||
3186f695 | 7315 | sym->attr.mod_proc = 1; |
15ca3865 | 7316 | sym->declared_at = old_locus; |
3186f695 | 7317 | |
94ce9f74 | 7318 | if (last) |
4ee9c684 | 7319 | break; |
4ee9c684 | 7320 | } |
7321 | ||
7322 | return MATCH_YES; | |
7323 | ||
7324 | syntax: | |
94ce9f74 | 7325 | /* Restore the previous state of the interface. */ |
7326 | interface = gfc_current_interface_head (); | |
7327 | gfc_set_current_interface_head (old_interface_head); | |
7328 | ||
7329 | /* Free the new interfaces. */ | |
7330 | while (interface != old_interface_head) | |
7331 | { | |
7332 | gfc_interface *i = interface->next; | |
434f0922 | 7333 | free (interface); |
94ce9f74 | 7334 | interface = i; |
7335 | } | |
7336 | ||
7337 | /* And issue a syntax error. */ | |
4ee9c684 | 7338 | gfc_syntax_error (ST_MODULE_PROC); |
7339 | return MATCH_ERROR; | |
7340 | } | |
7341 | ||
7342 | ||
ea94d76d | 7343 | /* Check a derived type that is being extended. */ |
7344 | static gfc_symbol* | |
7345 | check_extended_derived_type (char *name) | |
7346 | { | |
7347 | gfc_symbol *extended; | |
7348 | ||
7349 | if (gfc_find_symbol (name, gfc_current_ns, 1, &extended)) | |
7350 | { | |
7351 | gfc_error ("Ambiguous symbol in TYPE definition at %C"); | |
7352 | return NULL; | |
7353 | } | |
7354 | ||
7355 | if (!extended) | |
7356 | { | |
7357 | gfc_error ("No such symbol in TYPE definition at %C"); | |
7358 | return NULL; | |
7359 | } | |
7360 | ||
c2958b6b | 7361 | extended = gfc_find_dt_in_generic (extended); |
7362 | ||
ea94d76d | 7363 | if (extended->attr.flavor != FL_DERIVED) |
7364 | { | |
7365 | gfc_error ("'%s' in EXTENDS expression at %C is not a " | |
7366 | "derived type", name); | |
7367 | return NULL; | |
7368 | } | |
7369 | ||
7370 | if (extended->attr.is_bind_c) | |
7371 | { | |
7372 | gfc_error ("'%s' cannot be extended at %C because it " | |
7373 | "is BIND(C)", extended->name); | |
7374 | return NULL; | |
7375 | } | |
7376 | ||
7377 | if (extended->attr.sequence) | |
7378 | { | |
7379 | gfc_error ("'%s' cannot be extended at %C because it " | |
7380 | "is a SEQUENCE type", extended->name); | |
7381 | return NULL; | |
7382 | } | |
7383 | ||
7384 | return extended; | |
7385 | } | |
7386 | ||
7387 | ||
c5d33754 | 7388 | /* Match the optional attribute specifiers for a type declaration. |
7389 | Return MATCH_ERROR if an error is encountered in one of the handled | |
7390 | attributes (public, private, bind(c)), MATCH_NO if what's found is | |
7391 | not a handled attribute, and MATCH_YES otherwise. TODO: More error | |
7392 | checking on attribute conflicts needs to be done. */ | |
4ee9c684 | 7393 | |
7394 | match | |
ea94d76d | 7395 | gfc_get_type_attr_spec (symbol_attribute *attr, char *name) |
4ee9c684 | 7396 | { |
c5d33754 | 7397 | /* See if the derived type is marked as private. */ |
4ee9c684 | 7398 | if (gfc_match (" , private") == MATCH_YES) |
7399 | { | |
e14bee04 | 7400 | if (gfc_current_state () != COMP_MODULE) |
4ee9c684 | 7401 | { |
e14bee04 | 7402 | gfc_error ("Derived type at %C can only be PRIVATE in the " |
7403 | "specification part of a module"); | |
4ee9c684 | 7404 | return MATCH_ERROR; |
7405 | } | |
7406 | ||
c5d33754 | 7407 | if (gfc_add_access (attr, ACCESS_PRIVATE, NULL, NULL) == FAILURE) |
4ee9c684 | 7408 | return MATCH_ERROR; |
4ee9c684 | 7409 | } |
c5d33754 | 7410 | else if (gfc_match (" , public") == MATCH_YES) |
4ee9c684 | 7411 | { |
e14bee04 | 7412 | if (gfc_current_state () != COMP_MODULE) |
4ee9c684 | 7413 | { |
e14bee04 | 7414 | gfc_error ("Derived type at %C can only be PUBLIC in the " |
7415 | "specification part of a module"); | |
4ee9c684 | 7416 | return MATCH_ERROR; |
7417 | } | |
7418 | ||
c5d33754 | 7419 | if (gfc_add_access (attr, ACCESS_PUBLIC, NULL, NULL) == FAILURE) |
4ee9c684 | 7420 | return MATCH_ERROR; |
4ee9c684 | 7421 | } |
ac5f2650 | 7422 | else if (gfc_match (" , bind ( c )") == MATCH_YES) |
c5d33754 | 7423 | { |
7424 | /* If the type is defined to be bind(c) it then needs to make | |
7425 | sure that all fields are interoperable. This will | |
7426 | need to be a semantic check on the finished derived type. | |
7427 | See 15.2.3 (lines 9-12) of F2003 draft. */ | |
7428 | if (gfc_add_is_bind_c (attr, NULL, &gfc_current_locus, 0) != SUCCESS) | |
7429 | return MATCH_ERROR; | |
7430 | ||
7431 | /* TODO: attr conflicts need to be checked, probably in symbol.c. */ | |
7432 | } | |
ac5f2650 | 7433 | else if (gfc_match (" , abstract") == MATCH_YES) |
7434 | { | |
f25dbbf7 | 7435 | if (gfc_notify_std (GFC_STD_F2003, "ABSTRACT type at %C") |
ac5f2650 | 7436 | == FAILURE) |
7437 | return MATCH_ERROR; | |
7438 | ||
7439 | if (gfc_add_abstract (attr, &gfc_current_locus) == FAILURE) | |
7440 | return MATCH_ERROR; | |
7441 | } | |
ea94d76d | 7442 | else if (name && gfc_match(" , extends ( %n )", name) == MATCH_YES) |
7443 | { | |
e485ad6b | 7444 | if (gfc_add_extension (attr, &gfc_current_locus) == FAILURE) |
ea94d76d | 7445 | return MATCH_ERROR; |
7446 | } | |
c5d33754 | 7447 | else |
7448 | return MATCH_NO; | |
7449 | ||
7450 | /* If we get here, something matched. */ | |
7451 | return MATCH_YES; | |
7452 | } | |
7453 | ||
7454 | ||
7455 | /* Match the beginning of a derived type declaration. If a type name | |
7456 | was the result of a function, then it is possible to have a symbol | |
7457 | already to be known as a derived type yet have no components. */ | |
7458 | ||
7459 | match | |
7460 | gfc_match_derived_decl (void) | |
7461 | { | |
7462 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
ea94d76d | 7463 | char parent[GFC_MAX_SYMBOL_LEN + 1]; |
c5d33754 | 7464 | symbol_attribute attr; |
c2958b6b | 7465 | gfc_symbol *sym, *gensym; |
ea94d76d | 7466 | gfc_symbol *extended; |
c5d33754 | 7467 | match m; |
7468 | match is_type_attr_spec = MATCH_NO; | |
33e86520 | 7469 | bool seen_attr = false; |
c2958b6b | 7470 | gfc_interface *intr = NULL, *head; |
c5d33754 | 7471 | |
7472 | if (gfc_current_state () == COMP_DERIVED) | |
7473 | return MATCH_NO; | |
7474 | ||
ea94d76d | 7475 | name[0] = '\0'; |
7476 | parent[0] = '\0'; | |
c5d33754 | 7477 | gfc_clear_attr (&attr); |
ea94d76d | 7478 | extended = NULL; |
c5d33754 | 7479 | |
7480 | do | |
7481 | { | |
ea94d76d | 7482 | is_type_attr_spec = gfc_get_type_attr_spec (&attr, parent); |
c5d33754 | 7483 | if (is_type_attr_spec == MATCH_ERROR) |
7484 | return MATCH_ERROR; | |
33e86520 | 7485 | if (is_type_attr_spec == MATCH_YES) |
7486 | seen_attr = true; | |
c5d33754 | 7487 | } while (is_type_attr_spec == MATCH_YES); |
4ee9c684 | 7488 | |
e485ad6b | 7489 | /* Deal with derived type extensions. The extension attribute has |
7490 | been added to 'attr' but now the parent type must be found and | |
7491 | checked. */ | |
ea94d76d | 7492 | if (parent[0]) |
7493 | extended = check_extended_derived_type (parent); | |
7494 | ||
7495 | if (parent[0] && !extended) | |
7496 | return MATCH_ERROR; | |
7497 | ||
33e86520 | 7498 | if (gfc_match (" ::") != MATCH_YES && seen_attr) |
4ee9c684 | 7499 | { |
7500 | gfc_error ("Expected :: in TYPE definition at %C"); | |
7501 | return MATCH_ERROR; | |
7502 | } | |
7503 | ||
7504 | m = gfc_match (" %n%t", name); | |
7505 | if (m != MATCH_YES) | |
7506 | return m; | |
7507 | ||
a3055431 | 7508 | /* Make sure the name is not the name of an intrinsic type. */ |
7509 | if (gfc_is_intrinsic_typename (name)) | |
4ee9c684 | 7510 | { |
1a9745d2 | 7511 | gfc_error ("Type name '%s' at %C cannot be the same as an intrinsic " |
7512 | "type", name); | |
4ee9c684 | 7513 | return MATCH_ERROR; |
7514 | } | |
7515 | ||
c2958b6b | 7516 | if (gfc_get_symbol (name, NULL, &gensym)) |
4ee9c684 | 7517 | return MATCH_ERROR; |
7518 | ||
c2958b6b | 7519 | if (!gensym->attr.generic && gensym->ts.type != BT_UNKNOWN) |
4ee9c684 | 7520 | { |
7521 | gfc_error ("Derived type name '%s' at %C already has a basic type " | |
c2958b6b | 7522 | "of %s", gensym->name, gfc_typename (&gensym->ts)); |
7523 | return MATCH_ERROR; | |
7524 | } | |
7525 | ||
7526 | if (!gensym->attr.generic | |
7527 | && gfc_add_generic (&gensym->attr, gensym->name, NULL) == FAILURE) | |
7528 | return MATCH_ERROR; | |
7529 | ||
7530 | if (!gensym->attr.function | |
7531 | && gfc_add_function (&gensym->attr, gensym->name, NULL) == FAILURE) | |
7532 | return MATCH_ERROR; | |
7533 | ||
7534 | sym = gfc_find_dt_in_generic (gensym); | |
7535 | ||
7536 | if (sym && (sym->components != NULL || sym->attr.zero_comp)) | |
7537 | { | |
7538 | gfc_error ("Derived type definition of '%s' at %C has already been " | |
7539 | "defined", sym->name); | |
4ee9c684 | 7540 | return MATCH_ERROR; |
7541 | } | |
7542 | ||
c2958b6b | 7543 | if (!sym) |
7544 | { | |
7545 | /* Use upper case to save the actual derived-type symbol. */ | |
7546 | gfc_get_symbol (gfc_get_string ("%c%s", | |
7547 | (char) TOUPPER ((unsigned char) gensym->name[0]), | |
7548 | &gensym->name[1]), NULL, &sym); | |
7549 | sym->name = gfc_get_string (gensym->name); | |
7550 | head = gensym->generic; | |
7551 | intr = gfc_get_interface (); | |
7552 | intr->sym = sym; | |
7553 | intr->where = gfc_current_locus; | |
7554 | intr->sym->declared_at = gfc_current_locus; | |
7555 | intr->next = head; | |
7556 | gensym->generic = intr; | |
7557 | gensym->attr.if_source = IFSRC_DECL; | |
7558 | } | |
7559 | ||
4ee9c684 | 7560 | /* The symbol may already have the derived attribute without the |
7561 | components. The ways this can happen is via a function | |
7562 | definition, an INTRINSIC statement or a subtype in another | |
7563 | derived type that is a pointer. The first part of the AND clause | |
69b1505f | 7564 | is true if the symbol is not the return value of a function. */ |
4ee9c684 | 7565 | if (sym->attr.flavor != FL_DERIVED |
950683ed | 7566 | && gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL) == FAILURE) |
4ee9c684 | 7567 | return MATCH_ERROR; |
7568 | ||
4ee9c684 | 7569 | if (attr.access != ACCESS_UNKNOWN |
950683ed | 7570 | && gfc_add_access (&sym->attr, attr.access, sym->name, NULL) == FAILURE) |
4ee9c684 | 7571 | return MATCH_ERROR; |
c2958b6b | 7572 | else if (sym->attr.access == ACCESS_UNKNOWN |
7573 | && gensym->attr.access != ACCESS_UNKNOWN | |
7574 | && gfc_add_access (&sym->attr, gensym->attr.access, sym->name, NULL) | |
7575 | == FAILURE) | |
7576 | return MATCH_ERROR; | |
7577 | ||
7578 | if (sym->attr.access != ACCESS_UNKNOWN | |
7579 | && gensym->attr.access == ACCESS_UNKNOWN) | |
7580 | gensym->attr.access = sym->attr.access; | |
4ee9c684 | 7581 | |
c5d33754 | 7582 | /* See if the derived type was labeled as bind(c). */ |
7583 | if (attr.is_bind_c != 0) | |
7584 | sym->attr.is_bind_c = attr.is_bind_c; | |
7585 | ||
223f0f57 | 7586 | /* Construct the f2k_derived namespace if it is not yet there. */ |
7587 | if (!sym->f2k_derived) | |
7588 | sym->f2k_derived = gfc_get_namespace (NULL, 0); | |
ea94d76d | 7589 | |
7590 | if (extended && !sym->components) | |
7591 | { | |
7592 | gfc_component *p; | |
7593 | gfc_symtree *st; | |
7594 | ||
7595 | /* Add the extended derived type as the first component. */ | |
7596 | gfc_add_component (sym, parent, &p); | |
ea94d76d | 7597 | extended->refs++; |
7598 | gfc_set_sym_referenced (extended); | |
7599 | ||
7600 | p->ts.type = BT_DERIVED; | |
eeebe20b | 7601 | p->ts.u.derived = extended; |
ea94d76d | 7602 | p->initializer = gfc_default_initializer (&p->ts); |
bdfbc762 | 7603 | |
7604 | /* Set extension level. */ | |
7605 | if (extended->attr.extension == 255) | |
7606 | { | |
7607 | /* Since the extension field is 8 bit wide, we can only have | |
7608 | up to 255 extension levels. */ | |
7609 | gfc_error ("Maximum extension level reached with type '%s' at %L", | |
7610 | extended->name, &extended->declared_at); | |
7611 | return MATCH_ERROR; | |
7612 | } | |
7613 | sym->attr.extension = extended->attr.extension + 1; | |
ea94d76d | 7614 | |
7615 | /* Provide the links between the extended type and its extension. */ | |
7616 | if (!extended->f2k_derived) | |
7617 | extended->f2k_derived = gfc_get_namespace (NULL, 0); | |
7618 | st = gfc_new_symtree (&extended->f2k_derived->sym_root, sym->name); | |
7619 | st->n.sym = sym; | |
7620 | } | |
7621 | ||
bdfbc762 | 7622 | if (!sym->hash_value) |
7623 | /* Set the hash for the compound name for this type. */ | |
a656e7c2 | 7624 | sym->hash_value = gfc_hash_value (sym); |
1de1b1a9 | 7625 | |
ac5f2650 | 7626 | /* Take over the ABSTRACT attribute. */ |
7627 | sym->attr.abstract = attr.abstract; | |
7628 | ||
4ee9c684 | 7629 | gfc_new_block = sym; |
7630 | ||
7631 | return MATCH_YES; | |
7632 | } | |
b549d2a5 | 7633 | |
7634 | ||
7635 | /* Cray Pointees can be declared as: | |
452695a8 | 7636 | pointer (ipt, a (n,m,...,*)) */ |
b549d2a5 | 7637 | |
8458f4ca | 7638 | match |
b549d2a5 | 7639 | gfc_mod_pointee_as (gfc_array_spec *as) |
7640 | { | |
7641 | as->cray_pointee = true; /* This will be useful to know later. */ | |
7642 | if (as->type == AS_ASSUMED_SIZE) | |
452695a8 | 7643 | as->cp_was_assumed = true; |
b549d2a5 | 7644 | else if (as->type == AS_ASSUMED_SHAPE) |
7645 | { | |
7646 | gfc_error ("Cray Pointee at %C cannot be assumed shape array"); | |
7647 | return MATCH_ERROR; | |
7648 | } | |
7649 | return MATCH_YES; | |
7650 | } | |
3b6a4b41 | 7651 | |
7652 | ||
7653 | /* Match the enum definition statement, here we are trying to match | |
7654 | the first line of enum definition statement. | |
7655 | Returns MATCH_YES if match is found. */ | |
7656 | ||
7657 | match | |
7658 | gfc_match_enum (void) | |
7659 | { | |
7660 | match m; | |
7661 | ||
7662 | m = gfc_match_eos (); | |
7663 | if (m != MATCH_YES) | |
7664 | return m; | |
7665 | ||
f25dbbf7 | 7666 | if (gfc_notify_std (GFC_STD_F2003, "ENUM and ENUMERATOR at %C") |
3b6a4b41 | 7667 | == FAILURE) |
7668 | return MATCH_ERROR; | |
7669 | ||
7670 | return MATCH_YES; | |
7671 | } | |
7672 | ||
7673 | ||
fe1328da | 7674 | /* Returns an initializer whose value is one higher than the value of the |
7675 | LAST_INITIALIZER argument. If the argument is NULL, the | |
7676 | initializers value will be set to zero. The initializer's kind | |
7677 | will be set to gfc_c_int_kind. | |
7678 | ||
7679 | If -fshort-enums is given, the appropriate kind will be selected | |
7680 | later after all enumerators have been parsed. A warning is issued | |
7681 | here if an initializer exceeds gfc_c_int_kind. */ | |
7682 | ||
7683 | static gfc_expr * | |
7684 | enum_initializer (gfc_expr *last_initializer, locus where) | |
7685 | { | |
7686 | gfc_expr *result; | |
126387b5 | 7687 | result = gfc_get_constant_expr (BT_INTEGER, gfc_c_int_kind, &where); |
fe1328da | 7688 | |
7689 | mpz_init (result->value.integer); | |
7690 | ||
7691 | if (last_initializer != NULL) | |
7692 | { | |
7693 | mpz_add_ui (result->value.integer, last_initializer->value.integer, 1); | |
7694 | result->where = last_initializer->where; | |
7695 | ||
7696 | if (gfc_check_integer_range (result->value.integer, | |
7697 | gfc_c_int_kind) != ARITH_OK) | |
7698 | { | |
7699 | gfc_error ("Enumerator exceeds the C integer type at %C"); | |
7700 | return NULL; | |
7701 | } | |
7702 | } | |
7703 | else | |
7704 | { | |
7705 | /* Control comes here, if it's the very first enumerator and no | |
7706 | initializer has been given. It will be initialized to zero. */ | |
7707 | mpz_set_si (result->value.integer, 0); | |
7708 | } | |
7709 | ||
7710 | return result; | |
7711 | } | |
7712 | ||
7713 | ||
60fbbf9e | 7714 | /* Match a variable name with an optional initializer. When this |
7715 | subroutine is called, a variable is expected to be parsed next. | |
7716 | Depending on what is happening at the moment, updates either the | |
7717 | symbol table or the current interface. */ | |
7718 | ||
7719 | static match | |
7720 | enumerator_decl (void) | |
7721 | { | |
7722 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7723 | gfc_expr *initializer; | |
7724 | gfc_array_spec *as = NULL; | |
7725 | gfc_symbol *sym; | |
7726 | locus var_locus; | |
7727 | match m; | |
f6bb8f4b | 7728 | gfc_try t; |
60fbbf9e | 7729 | locus old_locus; |
7730 | ||
7731 | initializer = NULL; | |
7732 | old_locus = gfc_current_locus; | |
7733 | ||
7734 | /* When we get here, we've just matched a list of attributes and | |
7735 | maybe a type and a double colon. The next thing we expect to see | |
7736 | is the name of the symbol. */ | |
7737 | m = gfc_match_name (name); | |
7738 | if (m != MATCH_YES) | |
7739 | goto cleanup; | |
7740 | ||
7741 | var_locus = gfc_current_locus; | |
7742 | ||
7743 | /* OK, we've successfully matched the declaration. Now put the | |
7744 | symbol in the current namespace. If we fail to create the symbol, | |
7745 | bail out. */ | |
3e715c81 | 7746 | if (build_sym (name, NULL, false, &as, &var_locus) == FAILURE) |
60fbbf9e | 7747 | { |
7748 | m = MATCH_ERROR; | |
7749 | goto cleanup; | |
7750 | } | |
7751 | ||
7752 | /* The double colon must be present in order to have initializers. | |
7753 | Otherwise the statement is ambiguous with an assignment statement. */ | |
7754 | if (colon_seen) | |
7755 | { | |
7756 | if (gfc_match_char ('=') == MATCH_YES) | |
7757 | { | |
7758 | m = gfc_match_init_expr (&initializer); | |
7759 | if (m == MATCH_NO) | |
7760 | { | |
7761 | gfc_error ("Expected an initialization expression at %C"); | |
7762 | m = MATCH_ERROR; | |
7763 | } | |
7764 | ||
7765 | if (m != MATCH_YES) | |
7766 | goto cleanup; | |
7767 | } | |
7768 | } | |
7769 | ||
7770 | /* If we do not have an initializer, the initialization value of the | |
7771 | previous enumerator (stored in last_initializer) is incremented | |
7772 | by 1 and is used to initialize the current enumerator. */ | |
7773 | if (initializer == NULL) | |
fe1328da | 7774 | initializer = enum_initializer (last_initializer, old_locus); |
e14bee04 | 7775 | |
60fbbf9e | 7776 | if (initializer == NULL || initializer->ts.type != BT_INTEGER) |
7777 | { | |
a8beb4f8 | 7778 | gfc_error ("ENUMERATOR %L not initialized with integer expression", |
7779 | &var_locus); | |
e14bee04 | 7780 | m = MATCH_ERROR; |
60fbbf9e | 7781 | goto cleanup; |
7782 | } | |
7783 | ||
7784 | /* Store this current initializer, for the next enumerator variable | |
7785 | to be parsed. add_init_expr_to_sym() zeros initializer, so we | |
7786 | use last_initializer below. */ | |
7787 | last_initializer = initializer; | |
7788 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
7789 | ||
7790 | /* Maintain enumerator history. */ | |
7791 | gfc_find_symbol (name, NULL, 0, &sym); | |
7792 | create_enum_history (sym, last_initializer); | |
7793 | ||
7794 | return (t == SUCCESS) ? MATCH_YES : MATCH_ERROR; | |
7795 | ||
7796 | cleanup: | |
7797 | /* Free stuff up and return. */ | |
7798 | gfc_free_expr (initializer); | |
7799 | ||
7800 | return m; | |
7801 | } | |
7802 | ||
7803 | ||
f6d0e37a | 7804 | /* Match the enumerator definition statement. */ |
3b6a4b41 | 7805 | |
7806 | match | |
7807 | gfc_match_enumerator_def (void) | |
7808 | { | |
7809 | match m; | |
f6bb8f4b | 7810 | gfc_try t; |
e14bee04 | 7811 | |
3b6a4b41 | 7812 | gfc_clear_ts (¤t_ts); |
e14bee04 | 7813 | |
3b6a4b41 | 7814 | m = gfc_match (" enumerator"); |
7815 | if (m != MATCH_YES) | |
7816 | return m; | |
60fbbf9e | 7817 | |
7818 | m = gfc_match (" :: "); | |
7819 | if (m == MATCH_ERROR) | |
7820 | return m; | |
7821 | ||
7822 | colon_seen = (m == MATCH_YES); | |
e14bee04 | 7823 | |
3b6a4b41 | 7824 | if (gfc_current_state () != COMP_ENUM) |
7825 | { | |
7826 | gfc_error ("ENUM definition statement expected before %C"); | |
7827 | gfc_free_enum_history (); | |
7828 | return MATCH_ERROR; | |
7829 | } | |
7830 | ||
7831 | (¤t_ts)->type = BT_INTEGER; | |
7832 | (¤t_ts)->kind = gfc_c_int_kind; | |
e14bee04 | 7833 | |
60fbbf9e | 7834 | gfc_clear_attr (¤t_attr); |
7835 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, NULL); | |
7836 | if (t == FAILURE) | |
3b6a4b41 | 7837 | { |
60fbbf9e | 7838 | m = MATCH_ERROR; |
3b6a4b41 | 7839 | goto cleanup; |
7840 | } | |
7841 | ||
3b6a4b41 | 7842 | for (;;) |
7843 | { | |
60fbbf9e | 7844 | m = enumerator_decl (); |
3b6a4b41 | 7845 | if (m == MATCH_ERROR) |
a8beb4f8 | 7846 | { |
7847 | gfc_free_enum_history (); | |
7848 | goto cleanup; | |
7849 | } | |
3b6a4b41 | 7850 | if (m == MATCH_NO) |
7851 | break; | |
7852 | ||
7853 | if (gfc_match_eos () == MATCH_YES) | |
7854 | goto cleanup; | |
7855 | if (gfc_match_char (',') != MATCH_YES) | |
7856 | break; | |
7857 | } | |
7858 | ||
7859 | if (gfc_current_state () == COMP_ENUM) | |
7860 | { | |
7861 | gfc_free_enum_history (); | |
7862 | gfc_error ("Syntax error in ENUMERATOR definition at %C"); | |
7863 | m = MATCH_ERROR; | |
7864 | } | |
7865 | ||
7866 | cleanup: | |
7867 | gfc_free_array_spec (current_as); | |
7868 | current_as = NULL; | |
7869 | return m; | |
7870 | ||
7871 | } | |
7872 | ||
e449e4dd | 7873 | |
7fd88f6e | 7874 | /* Match binding attributes. */ |
7875 | ||
7876 | static match | |
64e93293 | 7877 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc) |
7fd88f6e | 7878 | { |
7879 | bool found_passing = false; | |
64e93293 | 7880 | bool seen_ptr = false; |
fe9b08a2 | 7881 | match m = MATCH_YES; |
7fd88f6e | 7882 | |
df084314 | 7883 | /* Initialize to defaults. Do so even before the MATCH_NO check so that in |
7fd88f6e | 7884 | this case the defaults are in there. */ |
7885 | ba->access = ACCESS_UNKNOWN; | |
7886 | ba->pass_arg = NULL; | |
7887 | ba->pass_arg_num = 0; | |
7888 | ba->nopass = 0; | |
7889 | ba->non_overridable = 0; | |
61c3b81d | 7890 | ba->deferred = 0; |
fe9b08a2 | 7891 | ba->ppc = ppc; |
7fd88f6e | 7892 | |
7893 | /* If we find a comma, we believe there are binding attributes. */ | |
fe9b08a2 | 7894 | m = gfc_match_char (','); |
7895 | if (m == MATCH_NO) | |
7896 | goto done; | |
7fd88f6e | 7897 | |
7898 | do | |
7899 | { | |
e2f06a48 | 7900 | /* Access specifier. */ |
7901 | ||
7902 | m = gfc_match (" public"); | |
7fd88f6e | 7903 | if (m == MATCH_ERROR) |
7904 | goto error; | |
7905 | if (m == MATCH_YES) | |
7906 | { | |
e2f06a48 | 7907 | if (ba->access != ACCESS_UNKNOWN) |
7fd88f6e | 7908 | { |
e2f06a48 | 7909 | gfc_error ("Duplicate access-specifier at %C"); |
7fd88f6e | 7910 | goto error; |
7911 | } | |
7912 | ||
e2f06a48 | 7913 | ba->access = ACCESS_PUBLIC; |
7fd88f6e | 7914 | continue; |
7915 | } | |
7916 | ||
e2f06a48 | 7917 | m = gfc_match (" private"); |
7fd88f6e | 7918 | if (m == MATCH_ERROR) |
7919 | goto error; | |
7920 | if (m == MATCH_YES) | |
7921 | { | |
e2f06a48 | 7922 | if (ba->access != ACCESS_UNKNOWN) |
7fd88f6e | 7923 | { |
e2f06a48 | 7924 | gfc_error ("Duplicate access-specifier at %C"); |
7fd88f6e | 7925 | goto error; |
7926 | } | |
7927 | ||
e2f06a48 | 7928 | ba->access = ACCESS_PRIVATE; |
7fd88f6e | 7929 | continue; |
7930 | } | |
7931 | ||
e2f06a48 | 7932 | /* If inside GENERIC, the following is not allowed. */ |
7933 | if (!generic) | |
7fd88f6e | 7934 | { |
7fd88f6e | 7935 | |
e2f06a48 | 7936 | /* NOPASS flag. */ |
7937 | m = gfc_match (" nopass"); | |
7938 | if (m == MATCH_ERROR) | |
7939 | goto error; | |
7940 | if (m == MATCH_YES) | |
7fd88f6e | 7941 | { |
e2f06a48 | 7942 | if (found_passing) |
7943 | { | |
7944 | gfc_error ("Binding attributes already specify passing," | |
7945 | " illegal NOPASS at %C"); | |
7946 | goto error; | |
7947 | } | |
7948 | ||
7949 | found_passing = true; | |
7950 | ba->nopass = 1; | |
7951 | continue; | |
7fd88f6e | 7952 | } |
7953 | ||
e2f06a48 | 7954 | /* PASS possibly including argument. */ |
7955 | m = gfc_match (" pass"); | |
7956 | if (m == MATCH_ERROR) | |
7957 | goto error; | |
7958 | if (m == MATCH_YES) | |
7fd88f6e | 7959 | { |
e2f06a48 | 7960 | char arg[GFC_MAX_SYMBOL_LEN + 1]; |
7961 | ||
7962 | if (found_passing) | |
7963 | { | |
7964 | gfc_error ("Binding attributes already specify passing," | |
7965 | " illegal PASS at %C"); | |
7966 | goto error; | |
7967 | } | |
7968 | ||
7969 | m = gfc_match (" ( %n )", arg); | |
7970 | if (m == MATCH_ERROR) | |
7971 | goto error; | |
7972 | if (m == MATCH_YES) | |
fe9b08a2 | 7973 | ba->pass_arg = gfc_get_string (arg); |
e2f06a48 | 7974 | gcc_assert ((m == MATCH_YES) == (ba->pass_arg != NULL)); |
7975 | ||
7976 | found_passing = true; | |
7977 | ba->nopass = 0; | |
7978 | continue; | |
7fd88f6e | 7979 | } |
7980 | ||
64e93293 | 7981 | if (ppc) |
7982 | { | |
7983 | /* POINTER flag. */ | |
7984 | m = gfc_match (" pointer"); | |
7985 | if (m == MATCH_ERROR) | |
7986 | goto error; | |
7987 | if (m == MATCH_YES) | |
7988 | { | |
7989 | if (seen_ptr) | |
7990 | { | |
7991 | gfc_error ("Duplicate POINTER attribute at %C"); | |
7992 | goto error; | |
7993 | } | |
7994 | ||
7995 | seen_ptr = true; | |
64e93293 | 7996 | continue; |
7997 | } | |
7998 | } | |
7999 | else | |
8000 | { | |
8001 | /* NON_OVERRIDABLE flag. */ | |
8002 | m = gfc_match (" non_overridable"); | |
8003 | if (m == MATCH_ERROR) | |
8004 | goto error; | |
8005 | if (m == MATCH_YES) | |
8006 | { | |
8007 | if (ba->non_overridable) | |
8008 | { | |
8009 | gfc_error ("Duplicate NON_OVERRIDABLE at %C"); | |
8010 | goto error; | |
8011 | } | |
8012 | ||
8013 | ba->non_overridable = 1; | |
8014 | continue; | |
8015 | } | |
8016 | ||
8017 | /* DEFERRED flag. */ | |
8018 | m = gfc_match (" deferred"); | |
8019 | if (m == MATCH_ERROR) | |
8020 | goto error; | |
8021 | if (m == MATCH_YES) | |
8022 | { | |
8023 | if (ba->deferred) | |
8024 | { | |
8025 | gfc_error ("Duplicate DEFERRED at %C"); | |
8026 | goto error; | |
8027 | } | |
8028 | ||
8029 | ba->deferred = 1; | |
8030 | continue; | |
8031 | } | |
8032 | } | |
8033 | ||
7fd88f6e | 8034 | } |
8035 | ||
8036 | /* Nothing matching found. */ | |
e2f06a48 | 8037 | if (generic) |
8038 | gfc_error ("Expected access-specifier at %C"); | |
8039 | else | |
8040 | gfc_error ("Expected binding attribute at %C"); | |
7fd88f6e | 8041 | goto error; |
8042 | } | |
8043 | while (gfc_match_char (',') == MATCH_YES); | |
8044 | ||
61c3b81d | 8045 | /* NON_OVERRIDABLE and DEFERRED exclude themselves. */ |
8046 | if (ba->non_overridable && ba->deferred) | |
8047 | { | |
8048 | gfc_error ("NON_OVERRIDABLE and DEFERRED can't both appear at %C"); | |
8049 | goto error; | |
8050 | } | |
8051 | ||
fe9b08a2 | 8052 | m = MATCH_YES; |
8053 | ||
8054 | done: | |
e2f06a48 | 8055 | if (ba->access == ACCESS_UNKNOWN) |
8056 | ba->access = gfc_typebound_default_access; | |
8057 | ||
64e93293 | 8058 | if (ppc && !seen_ptr) |
8059 | { | |
8060 | gfc_error ("POINTER attribute is required for procedure pointer component" | |
8061 | " at %C"); | |
8062 | goto error; | |
8063 | } | |
8064 | ||
fe9b08a2 | 8065 | return m; |
7fd88f6e | 8066 | |
8067 | error: | |
7fd88f6e | 8068 | return MATCH_ERROR; |
8069 | } | |
8070 | ||
8071 | ||
8072 | /* Match a PROCEDURE specific binding inside a derived type. */ | |
8073 | ||
8074 | static match | |
8075 | match_procedure_in_type (void) | |
8076 | { | |
8077 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8078 | char target_buf[GFC_MAX_SYMBOL_LEN + 1]; | |
7a3aaef8 | 8079 | char* target = NULL, *ifc = NULL; |
4a12b9ba | 8080 | gfc_typebound_proc tb; |
7fd88f6e | 8081 | bool seen_colons; |
8082 | bool seen_attrs; | |
8083 | match m; | |
8084 | gfc_symtree* stree; | |
8085 | gfc_namespace* ns; | |
8086 | gfc_symbol* block; | |
7a3aaef8 | 8087 | int num; |
7fd88f6e | 8088 | |
8089 | /* Check current state. */ | |
8090 | gcc_assert (gfc_state_stack->state == COMP_DERIVED_CONTAINS); | |
8091 | block = gfc_state_stack->previous->sym; | |
8092 | gcc_assert (block); | |
8093 | ||
61c3b81d | 8094 | /* Try to match PROCEDURE(interface). */ |
7fd88f6e | 8095 | if (gfc_match (" (") == MATCH_YES) |
8096 | { | |
61c3b81d | 8097 | m = gfc_match_name (target_buf); |
8098 | if (m == MATCH_ERROR) | |
8099 | return m; | |
8100 | if (m != MATCH_YES) | |
8101 | { | |
8102 | gfc_error ("Interface-name expected after '(' at %C"); | |
8103 | return MATCH_ERROR; | |
8104 | } | |
8105 | ||
8106 | if (gfc_match (" )") != MATCH_YES) | |
8107 | { | |
8108 | gfc_error ("')' expected at %C"); | |
8109 | return MATCH_ERROR; | |
8110 | } | |
8111 | ||
7a3aaef8 | 8112 | ifc = target_buf; |
7fd88f6e | 8113 | } |
8114 | ||
8115 | /* Construct the data structure. */ | |
b3d1387f | 8116 | memset (&tb, 0, sizeof (tb)); |
4a12b9ba | 8117 | tb.where = gfc_current_locus; |
7fd88f6e | 8118 | |
8119 | /* Match binding attributes. */ | |
4a12b9ba | 8120 | m = match_binding_attributes (&tb, false, false); |
7fd88f6e | 8121 | if (m == MATCH_ERROR) |
8122 | return m; | |
8123 | seen_attrs = (m == MATCH_YES); | |
8124 | ||
7a3aaef8 | 8125 | /* Check that attribute DEFERRED is given if an interface is specified. */ |
4a12b9ba | 8126 | if (tb.deferred && !ifc) |
61c3b81d | 8127 | { |
8128 | gfc_error ("Interface must be specified for DEFERRED binding at %C"); | |
8129 | return MATCH_ERROR; | |
8130 | } | |
4a12b9ba | 8131 | if (ifc && !tb.deferred) |
61c3b81d | 8132 | { |
8133 | gfc_error ("PROCEDURE(interface) at %C should be declared DEFERRED"); | |
8134 | return MATCH_ERROR; | |
8135 | } | |
8136 | ||
7fd88f6e | 8137 | /* Match the colons. */ |
8138 | m = gfc_match (" ::"); | |
8139 | if (m == MATCH_ERROR) | |
8140 | return m; | |
8141 | seen_colons = (m == MATCH_YES); | |
8142 | if (seen_attrs && !seen_colons) | |
8143 | { | |
8144 | gfc_error ("Expected '::' after binding-attributes at %C"); | |
8145 | return MATCH_ERROR; | |
8146 | } | |
8147 | ||
7a3aaef8 | 8148 | /* Match the binding names. */ |
8149 | for(num=1;;num++) | |
7fd88f6e | 8150 | { |
7a3aaef8 | 8151 | m = gfc_match_name (name); |
8152 | if (m == MATCH_ERROR) | |
8153 | return m; | |
8154 | if (m == MATCH_NO) | |
61c3b81d | 8155 | { |
7a3aaef8 | 8156 | gfc_error ("Expected binding name at %C"); |
61c3b81d | 8157 | return MATCH_ERROR; |
8158 | } | |
8159 | ||
f25dbbf7 | 8160 | if (num>1 && gfc_notify_std (GFC_STD_F2008, "PROCEDURE list" |
7a3aaef8 | 8161 | " at %C") == FAILURE) |
8162 | return MATCH_ERROR; | |
7fd88f6e | 8163 | |
7a3aaef8 | 8164 | /* Try to match the '=> target', if it's there. */ |
8165 | target = ifc; | |
8166 | m = gfc_match (" =>"); | |
7fd88f6e | 8167 | if (m == MATCH_ERROR) |
8168 | return m; | |
7a3aaef8 | 8169 | if (m == MATCH_YES) |
7fd88f6e | 8170 | { |
4a12b9ba | 8171 | if (tb.deferred) |
7a3aaef8 | 8172 | { |
8173 | gfc_error ("'=> target' is invalid for DEFERRED binding at %C"); | |
8174 | return MATCH_ERROR; | |
8175 | } | |
8176 | ||
8177 | if (!seen_colons) | |
8178 | { | |
8179 | gfc_error ("'::' needed in PROCEDURE binding with explicit target" | |
8180 | " at %C"); | |
8181 | return MATCH_ERROR; | |
8182 | } | |
8183 | ||
8184 | m = gfc_match_name (target_buf); | |
8185 | if (m == MATCH_ERROR) | |
8186 | return m; | |
8187 | if (m == MATCH_NO) | |
8188 | { | |
8189 | gfc_error ("Expected binding target after '=>' at %C"); | |
8190 | return MATCH_ERROR; | |
8191 | } | |
8192 | target = target_buf; | |
7fd88f6e | 8193 | } |
7fd88f6e | 8194 | |
7a3aaef8 | 8195 | /* If no target was found, it has the same name as the binding. */ |
8196 | if (!target) | |
8197 | target = name; | |
7fd88f6e | 8198 | |
7a3aaef8 | 8199 | /* Get the namespace to insert the symbols into. */ |
8200 | ns = block->f2k_derived; | |
8201 | gcc_assert (ns); | |
7fd88f6e | 8202 | |
7a3aaef8 | 8203 | /* If the binding is DEFERRED, check that the containing type is ABSTRACT. */ |
4a12b9ba | 8204 | if (tb.deferred && !block->attr.abstract) |
7a3aaef8 | 8205 | { |
8206 | gfc_error ("Type '%s' containing DEFERRED binding at %C " | |
8207 | "is not ABSTRACT", block->name); | |
8208 | return MATCH_ERROR; | |
8209 | } | |
7fd88f6e | 8210 | |
7a3aaef8 | 8211 | /* See if we already have a binding with this name in the symtree which |
8212 | would be an error. If a GENERIC already targetted this binding, it may | |
8213 | be already there but then typebound is still NULL. */ | |
8214 | stree = gfc_find_symtree (ns->tb_sym_root, name); | |
e204cb62 | 8215 | if (stree && stree->n.tb) |
7a3aaef8 | 8216 | { |
8217 | gfc_error ("There is already a procedure with binding name '%s' for " | |
8218 | "the derived type '%s' at %C", name, block->name); | |
8219 | return MATCH_ERROR; | |
8220 | } | |
61c3b81d | 8221 | |
7a3aaef8 | 8222 | /* Insert it and set attributes. */ |
7fd88f6e | 8223 | |
e204cb62 | 8224 | if (!stree) |
8225 | { | |
8226 | stree = gfc_new_symtree (&ns->tb_sym_root, name); | |
8227 | gcc_assert (stree); | |
8228 | } | |
4a12b9ba | 8229 | stree->n.tb = gfc_get_typebound_proc (&tb); |
3323e9b1 | 8230 | |
4a12b9ba | 8231 | if (gfc_get_sym_tree (target, gfc_current_ns, &stree->n.tb->u.specific, |
8232 | false)) | |
7a3aaef8 | 8233 | return MATCH_ERROR; |
4a12b9ba | 8234 | gfc_set_sym_referenced (stree->n.tb->u.specific->n.sym); |
7a3aaef8 | 8235 | |
8236 | if (gfc_match_eos () == MATCH_YES) | |
8237 | return MATCH_YES; | |
8238 | if (gfc_match_char (',') != MATCH_YES) | |
8239 | goto syntax; | |
3323e9b1 | 8240 | } |
7fd88f6e | 8241 | |
7a3aaef8 | 8242 | syntax: |
8243 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
8244 | return MATCH_ERROR; | |
7fd88f6e | 8245 | } |
8246 | ||
8247 | ||
e2f06a48 | 8248 | /* Match a GENERIC procedure binding inside a derived type. */ |
8249 | ||
8250 | match | |
8251 | gfc_match_generic (void) | |
8252 | { | |
8253 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
a36eb9ee | 8254 | char bind_name[GFC_MAX_SYMBOL_LEN + 16]; /* Allow space for OPERATOR(...). */ |
e2f06a48 | 8255 | gfc_symbol* block; |
8256 | gfc_typebound_proc tbattr; /* Used for match_binding_attributes. */ | |
8257 | gfc_typebound_proc* tb; | |
e2f06a48 | 8258 | gfc_namespace* ns; |
a36eb9ee | 8259 | interface_type op_type; |
8260 | gfc_intrinsic_op op; | |
e2f06a48 | 8261 | match m; |
8262 | ||
8263 | /* Check current state. */ | |
8264 | if (gfc_current_state () == COMP_DERIVED) | |
8265 | { | |
8266 | gfc_error ("GENERIC at %C must be inside a derived-type CONTAINS"); | |
8267 | return MATCH_ERROR; | |
8268 | } | |
8269 | if (gfc_current_state () != COMP_DERIVED_CONTAINS) | |
8270 | return MATCH_NO; | |
8271 | block = gfc_state_stack->previous->sym; | |
8272 | ns = block->f2k_derived; | |
8273 | gcc_assert (block && ns); | |
8274 | ||
b3d1387f | 8275 | memset (&tbattr, 0, sizeof (tbattr)); |
8276 | tbattr.where = gfc_current_locus; | |
8277 | ||
e2f06a48 | 8278 | /* See if we get an access-specifier. */ |
64e93293 | 8279 | m = match_binding_attributes (&tbattr, true, false); |
e2f06a48 | 8280 | if (m == MATCH_ERROR) |
8281 | goto error; | |
8282 | ||
8283 | /* Now the colons, those are required. */ | |
8284 | if (gfc_match (" ::") != MATCH_YES) | |
8285 | { | |
8286 | gfc_error ("Expected '::' at %C"); | |
8287 | goto error; | |
8288 | } | |
8289 | ||
a36eb9ee | 8290 | /* Match the binding name; depending on type (operator / generic) format |
8291 | it for future error messages into bind_name. */ | |
8292 | ||
8293 | m = gfc_match_generic_spec (&op_type, name, &op); | |
e2f06a48 | 8294 | if (m == MATCH_ERROR) |
8295 | return MATCH_ERROR; | |
8296 | if (m == MATCH_NO) | |
8297 | { | |
a36eb9ee | 8298 | gfc_error ("Expected generic name or operator descriptor at %C"); |
e2f06a48 | 8299 | goto error; |
8300 | } | |
8301 | ||
a36eb9ee | 8302 | switch (op_type) |
e2f06a48 | 8303 | { |
a36eb9ee | 8304 | case INTERFACE_GENERIC: |
8305 | snprintf (bind_name, sizeof (bind_name), "%s", name); | |
8306 | break; | |
8307 | ||
8308 | case INTERFACE_USER_OP: | |
8309 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(.%s.)", name); | |
8310 | break; | |
8311 | ||
8312 | case INTERFACE_INTRINSIC_OP: | |
8313 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(%s)", | |
8314 | gfc_op2string (op)); | |
8315 | break; | |
8316 | ||
8317 | default: | |
8318 | gcc_unreachable (); | |
8319 | } | |
3323e9b1 | 8320 | |
a36eb9ee | 8321 | /* Match the required =>. */ |
8322 | if (gfc_match (" =>") != MATCH_YES) | |
8323 | { | |
8324 | gfc_error ("Expected '=>' at %C"); | |
8325 | goto error; | |
8326 | } | |
8327 | ||
8328 | /* Try to find existing GENERIC binding with this name / for this operator; | |
8329 | if there is something, check that it is another GENERIC and then extend | |
8330 | it rather than building a new node. Otherwise, create it and put it | |
8331 | at the right position. */ | |
8332 | ||
8333 | switch (op_type) | |
8334 | { | |
8335 | case INTERFACE_USER_OP: | |
8336 | case INTERFACE_GENERIC: | |
8337 | { | |
8338 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
8339 | gfc_symtree* st; | |
8340 | ||
8341 | st = gfc_find_symtree (is_op ? ns->tb_uop_root : ns->tb_sym_root, name); | |
8342 | if (st) | |
8343 | { | |
8344 | tb = st->n.tb; | |
8345 | gcc_assert (tb); | |
8346 | } | |
8347 | else | |
8348 | tb = NULL; | |
8349 | ||
8350 | break; | |
8351 | } | |
8352 | ||
8353 | case INTERFACE_INTRINSIC_OP: | |
8354 | tb = ns->tb_op[op]; | |
8355 | break; | |
8356 | ||
8357 | default: | |
8358 | gcc_unreachable (); | |
8359 | } | |
8360 | ||
8361 | if (tb) | |
8362 | { | |
3323e9b1 | 8363 | if (!tb->is_generic) |
e2f06a48 | 8364 | { |
a36eb9ee | 8365 | gcc_assert (op_type == INTERFACE_GENERIC); |
e2f06a48 | 8366 | gfc_error ("There's already a non-generic procedure with binding name" |
8367 | " '%s' for the derived type '%s' at %C", | |
a36eb9ee | 8368 | bind_name, block->name); |
e2f06a48 | 8369 | goto error; |
8370 | } | |
8371 | ||
e2f06a48 | 8372 | if (tb->access != tbattr.access) |
8373 | { | |
8374 | gfc_error ("Binding at %C must have the same access as already" | |
a36eb9ee | 8375 | " defined binding '%s'", bind_name); |
e2f06a48 | 8376 | goto error; |
8377 | } | |
8378 | } | |
8379 | else | |
8380 | { | |
4a12b9ba | 8381 | tb = gfc_get_typebound_proc (NULL); |
e2f06a48 | 8382 | tb->where = gfc_current_locus; |
8383 | tb->access = tbattr.access; | |
8384 | tb->is_generic = 1; | |
8385 | tb->u.generic = NULL; | |
a36eb9ee | 8386 | |
8387 | switch (op_type) | |
8388 | { | |
8389 | case INTERFACE_GENERIC: | |
8390 | case INTERFACE_USER_OP: | |
8391 | { | |
8392 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
8393 | gfc_symtree* st; | |
8394 | ||
8395 | st = gfc_new_symtree (is_op ? &ns->tb_uop_root : &ns->tb_sym_root, | |
8396 | name); | |
8397 | gcc_assert (st); | |
8398 | st->n.tb = tb; | |
8399 | ||
8400 | break; | |
8401 | } | |
8402 | ||
8403 | case INTERFACE_INTRINSIC_OP: | |
8404 | ns->tb_op[op] = tb; | |
8405 | break; | |
8406 | ||
8407 | default: | |
8408 | gcc_unreachable (); | |
8409 | } | |
e2f06a48 | 8410 | } |
8411 | ||
8412 | /* Now, match all following names as specific targets. */ | |
8413 | do | |
8414 | { | |
8415 | gfc_symtree* target_st; | |
8416 | gfc_tbp_generic* target; | |
8417 | ||
8418 | m = gfc_match_name (name); | |
8419 | if (m == MATCH_ERROR) | |
8420 | goto error; | |
8421 | if (m == MATCH_NO) | |
8422 | { | |
8423 | gfc_error ("Expected specific binding name at %C"); | |
8424 | goto error; | |
8425 | } | |
8426 | ||
3323e9b1 | 8427 | target_st = gfc_get_tbp_symtree (&ns->tb_sym_root, name); |
e2f06a48 | 8428 | |
8429 | /* See if this is a duplicate specification. */ | |
8430 | for (target = tb->u.generic; target; target = target->next) | |
8431 | if (target_st == target->specific_st) | |
8432 | { | |
8433 | gfc_error ("'%s' already defined as specific binding for the" | |
a36eb9ee | 8434 | " generic '%s' at %C", name, bind_name); |
e2f06a48 | 8435 | goto error; |
8436 | } | |
8437 | ||
e2f06a48 | 8438 | target = gfc_get_tbp_generic (); |
8439 | target->specific_st = target_st; | |
8440 | target->specific = NULL; | |
8441 | target->next = tb->u.generic; | |
5c0f7d99 | 8442 | target->is_operator = ((op_type == INTERFACE_USER_OP) |
8443 | || (op_type == INTERFACE_INTRINSIC_OP)); | |
e2f06a48 | 8444 | tb->u.generic = target; |
8445 | } | |
8446 | while (gfc_match (" ,") == MATCH_YES); | |
8447 | ||
8448 | /* Here should be the end. */ | |
8449 | if (gfc_match_eos () != MATCH_YES) | |
8450 | { | |
8451 | gfc_error ("Junk after GENERIC binding at %C"); | |
8452 | goto error; | |
8453 | } | |
8454 | ||
8455 | return MATCH_YES; | |
8456 | ||
8457 | error: | |
8458 | return MATCH_ERROR; | |
8459 | } | |
8460 | ||
8461 | ||
223f0f57 | 8462 | /* Match a FINAL declaration inside a derived type. */ |
8463 | ||
8464 | match | |
8465 | gfc_match_final_decl (void) | |
8466 | { | |
8467 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8468 | gfc_symbol* sym; | |
8469 | match m; | |
8470 | gfc_namespace* module_ns; | |
8471 | bool first, last; | |
7fd88f6e | 8472 | gfc_symbol* block; |
223f0f57 | 8473 | |
519651c1 | 8474 | if (gfc_current_form == FORM_FREE) |
8475 | { | |
8476 | char c = gfc_peek_ascii_char (); | |
8477 | if (!gfc_is_whitespace (c) && c != ':') | |
8478 | return MATCH_NO; | |
8479 | } | |
8480 | ||
7fd88f6e | 8481 | if (gfc_state_stack->state != COMP_DERIVED_CONTAINS) |
223f0f57 | 8482 | { |
519651c1 | 8483 | if (gfc_current_form == FORM_FIXED) |
8484 | return MATCH_NO; | |
8485 | ||
223f0f57 | 8486 | gfc_error ("FINAL declaration at %C must be inside a derived type " |
7fd88f6e | 8487 | "CONTAINS section"); |
223f0f57 | 8488 | return MATCH_ERROR; |
8489 | } | |
8490 | ||
7fd88f6e | 8491 | block = gfc_state_stack->previous->sym; |
8492 | gcc_assert (block); | |
223f0f57 | 8493 | |
7fd88f6e | 8494 | if (!gfc_state_stack->previous || !gfc_state_stack->previous->previous |
8495 | || gfc_state_stack->previous->previous->state != COMP_MODULE) | |
223f0f57 | 8496 | { |
8497 | gfc_error ("Derived type declaration with FINAL at %C must be in the" | |
8498 | " specification part of a MODULE"); | |
8499 | return MATCH_ERROR; | |
8500 | } | |
8501 | ||
8502 | module_ns = gfc_current_ns; | |
8503 | gcc_assert (module_ns); | |
8504 | gcc_assert (module_ns->proc_name->attr.flavor == FL_MODULE); | |
8505 | ||
8506 | /* Match optional ::, don't care about MATCH_YES or MATCH_NO. */ | |
8507 | if (gfc_match (" ::") == MATCH_ERROR) | |
8508 | return MATCH_ERROR; | |
8509 | ||
8510 | /* Match the sequence of procedure names. */ | |
8511 | first = true; | |
8512 | last = false; | |
8513 | do | |
8514 | { | |
8515 | gfc_finalizer* f; | |
8516 | ||
8517 | if (first && gfc_match_eos () == MATCH_YES) | |
8518 | { | |
8519 | gfc_error ("Empty FINAL at %C"); | |
8520 | return MATCH_ERROR; | |
8521 | } | |
8522 | ||
8523 | m = gfc_match_name (name); | |
8524 | if (m == MATCH_NO) | |
8525 | { | |
8526 | gfc_error ("Expected module procedure name at %C"); | |
8527 | return MATCH_ERROR; | |
8528 | } | |
8529 | else if (m != MATCH_YES) | |
8530 | return MATCH_ERROR; | |
8531 | ||
8532 | if (gfc_match_eos () == MATCH_YES) | |
8533 | last = true; | |
8534 | if (!last && gfc_match_char (',') != MATCH_YES) | |
8535 | { | |
8536 | gfc_error ("Expected ',' at %C"); | |
8537 | return MATCH_ERROR; | |
8538 | } | |
8539 | ||
8540 | if (gfc_get_symbol (name, module_ns, &sym)) | |
8541 | { | |
8542 | gfc_error ("Unknown procedure name \"%s\" at %C", name); | |
8543 | return MATCH_ERROR; | |
8544 | } | |
8545 | ||
8546 | /* Mark the symbol as module procedure. */ | |
8547 | if (sym->attr.proc != PROC_MODULE | |
8548 | && gfc_add_procedure (&sym->attr, PROC_MODULE, | |
8549 | sym->name, NULL) == FAILURE) | |
8550 | return MATCH_ERROR; | |
8551 | ||
8552 | /* Check if we already have this symbol in the list, this is an error. */ | |
7fd88f6e | 8553 | for (f = block->f2k_derived->finalizers; f; f = f->next) |
e449e4dd | 8554 | if (f->proc_sym == sym) |
223f0f57 | 8555 | { |
8556 | gfc_error ("'%s' at %C is already defined as FINAL procedure!", | |
8557 | name); | |
8558 | return MATCH_ERROR; | |
8559 | } | |
8560 | ||
8561 | /* Add this symbol to the list of finalizers. */ | |
7fd88f6e | 8562 | gcc_assert (block->f2k_derived); |
223f0f57 | 8563 | ++sym->refs; |
48d8ad5a | 8564 | f = XCNEW (gfc_finalizer); |
e449e4dd | 8565 | f->proc_sym = sym; |
8566 | f->proc_tree = NULL; | |
223f0f57 | 8567 | f->where = gfc_current_locus; |
7fd88f6e | 8568 | f->next = block->f2k_derived->finalizers; |
8569 | block->f2k_derived->finalizers = f; | |
223f0f57 | 8570 | |
8571 | first = false; | |
8572 | } | |
8573 | while (!last); | |
8574 | ||
8575 | return MATCH_YES; | |
8576 | } | |
36b0a1b0 | 8577 | |
8578 | ||
8579 | const ext_attr_t ext_attr_list[] = { | |
8580 | { "dllimport", EXT_ATTR_DLLIMPORT, "dllimport" }, | |
8581 | { "dllexport", EXT_ATTR_DLLEXPORT, "dllexport" }, | |
8582 | { "cdecl", EXT_ATTR_CDECL, "cdecl" }, | |
8583 | { "stdcall", EXT_ATTR_STDCALL, "stdcall" }, | |
8584 | { "fastcall", EXT_ATTR_FASTCALL, "fastcall" }, | |
8585 | { NULL, EXT_ATTR_LAST, NULL } | |
8586 | }; | |
8587 | ||
8588 | /* Match a !GCC$ ATTRIBUTES statement of the form: | |
8589 | !GCC$ ATTRIBUTES attribute-list :: var-name [, var-name] ... | |
8590 | When we come here, we have already matched the !GCC$ ATTRIBUTES string. | |
8591 | ||
8592 | TODO: We should support all GCC attributes using the same syntax for | |
8593 | the attribute list, i.e. the list in C | |
8594 | __attributes(( attribute-list )) | |
8595 | matches then | |
8596 | !GCC$ ATTRIBUTES attribute-list :: | |
8597 | Cf. c-parser.c's c_parser_attributes; the data can then directly be | |
8598 | saved into a TREE. | |
8599 | ||
8600 | As there is absolutely no risk of confusion, we should never return | |
8601 | MATCH_NO. */ | |
8602 | match | |
8603 | gfc_match_gcc_attributes (void) | |
8604 | { | |
8605 | symbol_attribute attr; | |
8606 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8607 | unsigned id; | |
8608 | gfc_symbol *sym; | |
8609 | match m; | |
8610 | ||
8611 | gfc_clear_attr (&attr); | |
8612 | for(;;) | |
8613 | { | |
8614 | char ch; | |
8615 | ||
8616 | if (gfc_match_name (name) != MATCH_YES) | |
8617 | return MATCH_ERROR; | |
8618 | ||
8619 | for (id = 0; id < EXT_ATTR_LAST; id++) | |
8620 | if (strcmp (name, ext_attr_list[id].name) == 0) | |
8621 | break; | |
8622 | ||
8623 | if (id == EXT_ATTR_LAST) | |
8624 | { | |
8625 | gfc_error ("Unknown attribute in !GCC$ ATTRIBUTES statement at %C"); | |
8626 | return MATCH_ERROR; | |
8627 | } | |
8628 | ||
de0c4488 | 8629 | if (gfc_add_ext_attribute (&attr, (ext_attr_id_t) id, &gfc_current_locus) |
36b0a1b0 | 8630 | == FAILURE) |
8631 | return MATCH_ERROR; | |
8632 | ||
8633 | gfc_gobble_whitespace (); | |
8634 | ch = gfc_next_ascii_char (); | |
8635 | if (ch == ':') | |
8636 | { | |
8637 | /* This is the successful exit condition for the loop. */ | |
8638 | if (gfc_next_ascii_char () == ':') | |
8639 | break; | |
8640 | } | |
8641 | ||
8642 | if (ch == ',') | |
8643 | continue; | |
8644 | ||
8645 | goto syntax; | |
8646 | } | |
8647 | ||
8648 | if (gfc_match_eos () == MATCH_YES) | |
8649 | goto syntax; | |
8650 | ||
8651 | for(;;) | |
8652 | { | |
8653 | m = gfc_match_name (name); | |
8654 | if (m != MATCH_YES) | |
8655 | return m; | |
8656 | ||
8657 | if (find_special (name, &sym, true)) | |
8658 | return MATCH_ERROR; | |
8659 | ||
8660 | sym->attr.ext_attr |= attr.ext_attr; | |
8661 | ||
8662 | if (gfc_match_eos () == MATCH_YES) | |
8663 | break; | |
8664 | ||
8665 | if (gfc_match_char (',') != MATCH_YES) | |
8666 | goto syntax; | |
8667 | } | |
8668 | ||
8669 | return MATCH_YES; | |
8670 | ||
8671 | syntax: | |
8672 | gfc_error ("Syntax error in !GCC$ ATTRIBUTES statement at %C"); | |
8673 | return MATCH_ERROR; | |
8674 | } |