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4ee9c684 | 1 | /* Declaration statement matcher |
8e8f6434 | 2 | Copyright (C) 2002-2018 Free Software Foundation, Inc. |
4ee9c684 | 3 | Contributed by Andy Vaught |
4 | ||
c84b470d | 5 | This file is part of GCC. |
4ee9c684 | 6 | |
c84b470d | 7 | GCC is free software; you can redistribute it and/or modify it under |
8 | the terms of the GNU General Public License as published by the Free | |
bdabe786 | 9 | Software Foundation; either version 3, or (at your option) any later |
c84b470d | 10 | version. |
4ee9c684 | 11 | |
c84b470d | 12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
4ee9c684 | 16 | |
17 | You should have received a copy of the GNU General Public License | |
bdabe786 | 18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
4ee9c684 | 20 | |
4ee9c684 | 21 | #include "config.h" |
7436502b | 22 | #include "system.h" |
e4d6c7fc | 23 | #include "coretypes.h" |
4cba6f60 | 24 | #include "options.h" |
25 | #include "tree.h" | |
4ee9c684 | 26 | #include "gfortran.h" |
4cba6f60 | 27 | #include "stringpool.h" |
4ee9c684 | 28 | #include "match.h" |
29 | #include "parse.h" | |
126387b5 | 30 | #include "constructor.h" |
cbbac028 | 31 | |
32 | /* Macros to access allocate memory for gfc_data_variable, | |
33 | gfc_data_value and gfc_data. */ | |
48d8ad5a | 34 | #define gfc_get_data_variable() XCNEW (gfc_data_variable) |
35 | #define gfc_get_data_value() XCNEW (gfc_data_value) | |
36 | #define gfc_get_data() XCNEW (gfc_data) | |
cbbac028 | 37 | |
38 | ||
60e19868 | 39 | static bool set_binding_label (const char **, const char *, int); |
7b2060ba | 40 | |
41 | ||
36ae04f2 | 42 | /* This flag is set if an old-style length selector is matched |
4ee9c684 | 43 | during a type-declaration statement. */ |
44 | ||
45 | static int old_char_selector; | |
46 | ||
5739e54e | 47 | /* When variables acquire types and attributes from a declaration |
4ee9c684 | 48 | statement, they get them from the following static variables. The |
49 | first part of a declaration sets these variables and the second | |
50 | part copies these into symbol structures. */ | |
51 | ||
52 | static gfc_typespec current_ts; | |
53 | ||
54 | static symbol_attribute current_attr; | |
55 | static gfc_array_spec *current_as; | |
56 | static int colon_seen; | |
8ef2cf76 | 57 | static int attr_seen; |
4ee9c684 | 58 | |
c5d33754 | 59 | /* The current binding label (if any). */ |
1d8a57d8 | 60 | static const char* curr_binding_label; |
c5d33754 | 61 | /* Need to know how many identifiers are on the current data declaration |
62 | line in case we're given the BIND(C) attribute with a NAME= specifier. */ | |
63 | static int num_idents_on_line; | |
64 | /* Need to know if a NAME= specifier was found during gfc_match_bind_c so we | |
65 | can supply a name if the curr_binding_label is nil and NAME= was not. */ | |
66 | static int has_name_equals = 0; | |
67 | ||
3b6a4b41 | 68 | /* Initializer of the previous enumerator. */ |
69 | ||
70 | static gfc_expr *last_initializer; | |
71 | ||
72 | /* History of all the enumerators is maintained, so that | |
73 | kind values of all the enumerators could be updated depending | |
74 | upon the maximum initialized value. */ | |
75 | ||
76 | typedef struct enumerator_history | |
77 | { | |
78 | gfc_symbol *sym; | |
79 | gfc_expr *initializer; | |
80 | struct enumerator_history *next; | |
81 | } | |
82 | enumerator_history; | |
83 | ||
84 | /* Header of enum history chain. */ | |
85 | ||
86 | static enumerator_history *enum_history = NULL; | |
87 | ||
88 | /* Pointer of enum history node containing largest initializer. */ | |
89 | ||
90 | static enumerator_history *max_enum = NULL; | |
91 | ||
4ee9c684 | 92 | /* gfc_new_block points to the symbol of a newly matched block. */ |
93 | ||
94 | gfc_symbol *gfc_new_block; | |
95 | ||
077932f9 | 96 | bool gfc_matching_function; |
67a51c8e | 97 | |
82841c8f | 98 | /* Set upon parsing a !GCC$ unroll n directive for use in the next loop. */ |
99 | int directive_unroll = -1; | |
100 | ||
9d958d5b | 101 | /* If a kind expression of a component of a parameterized derived type is |
102 | parameterized, temporarily store the expression here. */ | |
103 | static gfc_expr *saved_kind_expr = NULL; | |
104 | ||
105 | /* Used to store the parameter list arising in a PDT declaration and | |
106 | in the typespec of a PDT variable or component. */ | |
107 | static gfc_actual_arglist *decl_type_param_list; | |
108 | static gfc_actual_arglist *type_param_spec_list; | |
109 | ||
b4f45d02 | 110 | /********************* DATA statement subroutines *********************/ |
111 | ||
1bfea7e8 | 112 | static bool in_match_data = false; |
113 | ||
114 | bool | |
115 | gfc_in_match_data (void) | |
116 | { | |
117 | return in_match_data; | |
118 | } | |
119 | ||
cbbac028 | 120 | static void |
121 | set_in_match_data (bool set_value) | |
1bfea7e8 | 122 | { |
123 | in_match_data = set_value; | |
124 | } | |
125 | ||
b4f45d02 | 126 | /* Free a gfc_data_variable structure and everything beneath it. */ |
127 | ||
128 | static void | |
1a9745d2 | 129 | free_variable (gfc_data_variable *p) |
b4f45d02 | 130 | { |
131 | gfc_data_variable *q; | |
132 | ||
133 | for (; p; p = q) | |
134 | { | |
135 | q = p->next; | |
136 | gfc_free_expr (p->expr); | |
137 | gfc_free_iterator (&p->iter, 0); | |
138 | free_variable (p->list); | |
434f0922 | 139 | free (p); |
b4f45d02 | 140 | } |
141 | } | |
142 | ||
143 | ||
144 | /* Free a gfc_data_value structure and everything beneath it. */ | |
145 | ||
146 | static void | |
1a9745d2 | 147 | free_value (gfc_data_value *p) |
b4f45d02 | 148 | { |
149 | gfc_data_value *q; | |
150 | ||
151 | for (; p; p = q) | |
152 | { | |
153 | q = p->next; | |
2d4466dd | 154 | mpz_clear (p->repeat); |
b4f45d02 | 155 | gfc_free_expr (p->expr); |
434f0922 | 156 | free (p); |
b4f45d02 | 157 | } |
158 | } | |
159 | ||
160 | ||
161 | /* Free a list of gfc_data structures. */ | |
162 | ||
163 | void | |
1a9745d2 | 164 | gfc_free_data (gfc_data *p) |
b4f45d02 | 165 | { |
166 | gfc_data *q; | |
167 | ||
168 | for (; p; p = q) | |
169 | { | |
170 | q = p->next; | |
b4f45d02 | 171 | free_variable (p->var); |
172 | free_value (p->value); | |
434f0922 | 173 | free (p); |
b4f45d02 | 174 | } |
175 | } | |
176 | ||
177 | ||
af29c1f0 | 178 | /* Free all data in a namespace. */ |
1a9745d2 | 179 | |
af29c1f0 | 180 | static void |
f6d0e37a | 181 | gfc_free_data_all (gfc_namespace *ns) |
af29c1f0 | 182 | { |
183 | gfc_data *d; | |
184 | ||
185 | for (;ns->data;) | |
186 | { | |
187 | d = ns->data->next; | |
434f0922 | 188 | free (ns->data); |
af29c1f0 | 189 | ns->data = d; |
190 | } | |
191 | } | |
192 | ||
388ce1b2 | 193 | /* Reject data parsed since the last restore point was marked. */ |
194 | ||
195 | void | |
196 | gfc_reject_data (gfc_namespace *ns) | |
197 | { | |
198 | gfc_data *d; | |
199 | ||
200 | while (ns->data && ns->data != ns->old_data) | |
201 | { | |
202 | d = ns->data->next; | |
203 | free (ns->data); | |
204 | ns->data = d; | |
205 | } | |
206 | } | |
af29c1f0 | 207 | |
b4f45d02 | 208 | static match var_element (gfc_data_variable *); |
209 | ||
210 | /* Match a list of variables terminated by an iterator and a right | |
211 | parenthesis. */ | |
212 | ||
213 | static match | |
1a9745d2 | 214 | var_list (gfc_data_variable *parent) |
b4f45d02 | 215 | { |
216 | gfc_data_variable *tail, var; | |
217 | match m; | |
218 | ||
219 | m = var_element (&var); | |
220 | if (m == MATCH_ERROR) | |
221 | return MATCH_ERROR; | |
222 | if (m == MATCH_NO) | |
223 | goto syntax; | |
224 | ||
225 | tail = gfc_get_data_variable (); | |
226 | *tail = var; | |
227 | ||
228 | parent->list = tail; | |
229 | ||
230 | for (;;) | |
231 | { | |
232 | if (gfc_match_char (',') != MATCH_YES) | |
233 | goto syntax; | |
234 | ||
235 | m = gfc_match_iterator (&parent->iter, 1); | |
236 | if (m == MATCH_YES) | |
237 | break; | |
238 | if (m == MATCH_ERROR) | |
239 | return MATCH_ERROR; | |
240 | ||
241 | m = var_element (&var); | |
242 | if (m == MATCH_ERROR) | |
243 | return MATCH_ERROR; | |
244 | if (m == MATCH_NO) | |
245 | goto syntax; | |
246 | ||
247 | tail->next = gfc_get_data_variable (); | |
248 | tail = tail->next; | |
249 | ||
250 | *tail = var; | |
251 | } | |
252 | ||
253 | if (gfc_match_char (')') != MATCH_YES) | |
254 | goto syntax; | |
255 | return MATCH_YES; | |
256 | ||
257 | syntax: | |
258 | gfc_syntax_error (ST_DATA); | |
259 | return MATCH_ERROR; | |
260 | } | |
261 | ||
262 | ||
263 | /* Match a single element in a data variable list, which can be a | |
264 | variable-iterator list. */ | |
265 | ||
266 | static match | |
c1977dbe | 267 | var_element (gfc_data_variable *new_var) |
b4f45d02 | 268 | { |
269 | match m; | |
270 | gfc_symbol *sym; | |
271 | ||
c1977dbe | 272 | memset (new_var, 0, sizeof (gfc_data_variable)); |
b4f45d02 | 273 | |
274 | if (gfc_match_char ('(') == MATCH_YES) | |
c1977dbe | 275 | return var_list (new_var); |
b4f45d02 | 276 | |
c1977dbe | 277 | m = gfc_match_variable (&new_var->expr, 0); |
b4f45d02 | 278 | if (m != MATCH_YES) |
279 | return m; | |
280 | ||
c1977dbe | 281 | sym = new_var->expr->symtree->n.sym; |
b4f45d02 | 282 | |
40de255b | 283 | /* Symbol should already have an associated type. */ |
60e19868 | 284 | if (!gfc_check_symbol_typed (sym, gfc_current_ns, false, gfc_current_locus)) |
40de255b | 285 | return MATCH_ERROR; |
286 | ||
1a9745d2 | 287 | if (!sym->attr.function && gfc_current_ns->parent |
288 | && gfc_current_ns->parent == sym->ns) | |
b4f45d02 | 289 | { |
716da296 | 290 | gfc_error ("Host associated variable %qs may not be in the DATA " |
7698a624 | 291 | "statement at %C", sym->name); |
b4f45d02 | 292 | return MATCH_ERROR; |
293 | } | |
294 | ||
c8df3e9c | 295 | if (gfc_current_state () != COMP_BLOCK_DATA |
1a9745d2 | 296 | && sym->attr.in_common |
60e19868 | 297 | && !gfc_notify_std (GFC_STD_GNU, "initialization of " |
0d2b3c9c | 298 | "common block variable %qs in DATA statement at %C", |
60e19868 | 299 | sym->name)) |
c8df3e9c | 300 | return MATCH_ERROR; |
b4f45d02 | 301 | |
60e19868 | 302 | if (!gfc_add_data (&sym->attr, sym->name, &new_var->expr->where)) |
b4f45d02 | 303 | return MATCH_ERROR; |
304 | ||
305 | return MATCH_YES; | |
306 | } | |
307 | ||
308 | ||
309 | /* Match the top-level list of data variables. */ | |
310 | ||
311 | static match | |
1a9745d2 | 312 | top_var_list (gfc_data *d) |
b4f45d02 | 313 | { |
c1977dbe | 314 | gfc_data_variable var, *tail, *new_var; |
b4f45d02 | 315 | match m; |
316 | ||
317 | tail = NULL; | |
318 | ||
319 | for (;;) | |
320 | { | |
321 | m = var_element (&var); | |
322 | if (m == MATCH_NO) | |
323 | goto syntax; | |
324 | if (m == MATCH_ERROR) | |
325 | return MATCH_ERROR; | |
326 | ||
c1977dbe | 327 | new_var = gfc_get_data_variable (); |
328 | *new_var = var; | |
b4f45d02 | 329 | |
330 | if (tail == NULL) | |
c1977dbe | 331 | d->var = new_var; |
b4f45d02 | 332 | else |
c1977dbe | 333 | tail->next = new_var; |
b4f45d02 | 334 | |
c1977dbe | 335 | tail = new_var; |
b4f45d02 | 336 | |
337 | if (gfc_match_char ('/') == MATCH_YES) | |
338 | break; | |
339 | if (gfc_match_char (',') != MATCH_YES) | |
340 | goto syntax; | |
341 | } | |
342 | ||
343 | return MATCH_YES; | |
344 | ||
345 | syntax: | |
346 | gfc_syntax_error (ST_DATA); | |
af29c1f0 | 347 | gfc_free_data_all (gfc_current_ns); |
b4f45d02 | 348 | return MATCH_ERROR; |
349 | } | |
350 | ||
351 | ||
352 | static match | |
1a9745d2 | 353 | match_data_constant (gfc_expr **result) |
b4f45d02 | 354 | { |
355 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c2958b6b | 356 | gfc_symbol *sym, *dt_sym = NULL; |
b4f45d02 | 357 | gfc_expr *expr; |
358 | match m; | |
096d4ad9 | 359 | locus old_loc; |
b4f45d02 | 360 | |
361 | m = gfc_match_literal_constant (&expr, 1); | |
362 | if (m == MATCH_YES) | |
363 | { | |
364 | *result = expr; | |
365 | return MATCH_YES; | |
366 | } | |
367 | ||
368 | if (m == MATCH_ERROR) | |
369 | return MATCH_ERROR; | |
370 | ||
371 | m = gfc_match_null (result); | |
372 | if (m != MATCH_NO) | |
373 | return m; | |
374 | ||
096d4ad9 | 375 | old_loc = gfc_current_locus; |
376 | ||
377 | /* Should this be a structure component, try to match it | |
378 | before matching a name. */ | |
379 | m = gfc_match_rvalue (result); | |
380 | if (m == MATCH_ERROR) | |
381 | return m; | |
382 | ||
383 | if (m == MATCH_YES && (*result)->expr_type == EXPR_STRUCTURE) | |
384 | { | |
60e19868 | 385 | if (!gfc_simplify_expr (*result, 0)) |
096d4ad9 | 386 | m = MATCH_ERROR; |
387 | return m; | |
388 | } | |
021ff494 | 389 | else if (m == MATCH_YES) |
a8289010 | 390 | { |
391 | /* F2018:R845 data-stmt-constant is initial-data-target. | |
392 | A data-stmt-constant shall be ... initial-data-target if and | |
393 | only if the corresponding data-stmt-object has the POINTER | |
394 | attribute. ... If data-stmt-constant is initial-data-target | |
395 | the corresponding data statement object shall be | |
396 | data-pointer-initialization compatible (7.5.4.6) with the initial | |
397 | data target; the data statement object is initially associated | |
398 | with the target. */ | |
399 | if ((*result)->symtree->n.sym->attr.save | |
400 | && (*result)->symtree->n.sym->attr.target) | |
401 | return m; | |
402 | gfc_free_expr (*result); | |
403 | } | |
096d4ad9 | 404 | |
405 | gfc_current_locus = old_loc; | |
406 | ||
b4f45d02 | 407 | m = gfc_match_name (name); |
408 | if (m != MATCH_YES) | |
409 | return m; | |
410 | ||
411 | if (gfc_find_symbol (name, NULL, 1, &sym)) | |
412 | return MATCH_ERROR; | |
413 | ||
c2958b6b | 414 | if (sym && sym->attr.generic) |
415 | dt_sym = gfc_find_dt_in_generic (sym); | |
416 | ||
b4f45d02 | 417 | if (sym == NULL |
c2958b6b | 418 | || (sym->attr.flavor != FL_PARAMETER |
d7cd448a | 419 | && (!dt_sym || !gfc_fl_struct (dt_sym->attr.flavor)))) |
b4f45d02 | 420 | { |
716da296 | 421 | gfc_error ("Symbol %qs must be a PARAMETER in DATA statement at %C", |
b4f45d02 | 422 | name); |
fb5574d7 | 423 | *result = NULL; |
b4f45d02 | 424 | return MATCH_ERROR; |
425 | } | |
d7cd448a | 426 | else if (dt_sym && gfc_fl_struct (dt_sym->attr.flavor)) |
c2958b6b | 427 | return gfc_match_structure_constructor (dt_sym, result); |
b4f45d02 | 428 | |
f0a51891 | 429 | /* Check to see if the value is an initialization array expression. */ |
430 | if (sym->value->expr_type == EXPR_ARRAY) | |
431 | { | |
432 | gfc_current_locus = old_loc; | |
433 | ||
434 | m = gfc_match_init_expr (result); | |
435 | if (m == MATCH_ERROR) | |
436 | return m; | |
437 | ||
438 | if (m == MATCH_YES) | |
439 | { | |
60e19868 | 440 | if (!gfc_simplify_expr (*result, 0)) |
f0a51891 | 441 | m = MATCH_ERROR; |
442 | ||
443 | if ((*result)->expr_type == EXPR_CONSTANT) | |
444 | return m; | |
445 | else | |
446 | { | |
447 | gfc_error ("Invalid initializer %s in Data statement at %C", name); | |
448 | return MATCH_ERROR; | |
449 | } | |
450 | } | |
451 | } | |
452 | ||
b4f45d02 | 453 | *result = gfc_copy_expr (sym->value); |
454 | return MATCH_YES; | |
455 | } | |
456 | ||
457 | ||
458 | /* Match a list of values in a DATA statement. The leading '/' has | |
459 | already been seen at this point. */ | |
460 | ||
461 | static match | |
1a9745d2 | 462 | top_val_list (gfc_data *data) |
b4f45d02 | 463 | { |
c1977dbe | 464 | gfc_data_value *new_val, *tail; |
b4f45d02 | 465 | gfc_expr *expr; |
b4f45d02 | 466 | match m; |
467 | ||
468 | tail = NULL; | |
469 | ||
470 | for (;;) | |
471 | { | |
472 | m = match_data_constant (&expr); | |
473 | if (m == MATCH_NO) | |
474 | goto syntax; | |
475 | if (m == MATCH_ERROR) | |
476 | return MATCH_ERROR; | |
477 | ||
c1977dbe | 478 | new_val = gfc_get_data_value (); |
479 | mpz_init (new_val->repeat); | |
b4f45d02 | 480 | |
481 | if (tail == NULL) | |
c1977dbe | 482 | data->value = new_val; |
b4f45d02 | 483 | else |
c1977dbe | 484 | tail->next = new_val; |
b4f45d02 | 485 | |
c1977dbe | 486 | tail = new_val; |
b4f45d02 | 487 | |
488 | if (expr->ts.type != BT_INTEGER || gfc_match_char ('*') != MATCH_YES) | |
489 | { | |
490 | tail->expr = expr; | |
7d74abfd | 491 | mpz_set_ui (tail->repeat, 1); |
b4f45d02 | 492 | } |
493 | else | |
494 | { | |
021ff494 | 495 | mpz_set (tail->repeat, expr->value.integer); |
b4f45d02 | 496 | gfc_free_expr (expr); |
b4f45d02 | 497 | |
498 | m = match_data_constant (&tail->expr); | |
499 | if (m == MATCH_NO) | |
500 | goto syntax; | |
501 | if (m == MATCH_ERROR) | |
502 | return MATCH_ERROR; | |
503 | } | |
504 | ||
505 | if (gfc_match_char ('/') == MATCH_YES) | |
506 | break; | |
507 | if (gfc_match_char (',') == MATCH_NO) | |
508 | goto syntax; | |
509 | } | |
510 | ||
511 | return MATCH_YES; | |
512 | ||
513 | syntax: | |
514 | gfc_syntax_error (ST_DATA); | |
af29c1f0 | 515 | gfc_free_data_all (gfc_current_ns); |
b4f45d02 | 516 | return MATCH_ERROR; |
517 | } | |
518 | ||
519 | ||
520 | /* Matches an old style initialization. */ | |
521 | ||
522 | static match | |
523 | match_old_style_init (const char *name) | |
524 | { | |
525 | match m; | |
526 | gfc_symtree *st; | |
344b937e | 527 | gfc_symbol *sym; |
b4f45d02 | 528 | gfc_data *newdata; |
529 | ||
530 | /* Set up data structure to hold initializers. */ | |
531 | gfc_find_sym_tree (name, NULL, 0, &st); | |
344b937e | 532 | sym = st->n.sym; |
533 | ||
b4f45d02 | 534 | newdata = gfc_get_data (); |
535 | newdata->var = gfc_get_data_variable (); | |
536 | newdata->var->expr = gfc_get_variable_expr (st); | |
d9c759d9 | 537 | newdata->var->expr->where = sym->declared_at; |
5aed5db3 | 538 | newdata->where = gfc_current_locus; |
b4f45d02 | 539 | |
f6d0e37a | 540 | /* Match initial value list. This also eats the terminal '/'. */ |
b4f45d02 | 541 | m = top_val_list (newdata); |
542 | if (m != MATCH_YES) | |
543 | { | |
434f0922 | 544 | free (newdata); |
b4f45d02 | 545 | return m; |
546 | } | |
547 | ||
548 | if (gfc_pure (NULL)) | |
549 | { | |
550 | gfc_error ("Initialization at %C is not allowed in a PURE procedure"); | |
434f0922 | 551 | free (newdata); |
b4f45d02 | 552 | return MATCH_ERROR; |
553 | } | |
c77badf3 | 554 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
8b0a2e85 | 555 | |
344b937e | 556 | /* Mark the variable as having appeared in a data statement. */ |
60e19868 | 557 | if (!gfc_add_data (&sym->attr, sym->name, &sym->declared_at)) |
344b937e | 558 | { |
434f0922 | 559 | free (newdata); |
344b937e | 560 | return MATCH_ERROR; |
561 | } | |
562 | ||
b4f45d02 | 563 | /* Chain in namespace list of DATA initializers. */ |
564 | newdata->next = gfc_current_ns->data; | |
565 | gfc_current_ns->data = newdata; | |
566 | ||
567 | return m; | |
568 | } | |
569 | ||
1a9745d2 | 570 | |
b4f45d02 | 571 | /* Match the stuff following a DATA statement. If ERROR_FLAG is set, |
39fca56b | 572 | we are matching a DATA statement and are therefore issuing an error |
e14bee04 | 573 | if we encounter something unexpected, if not, we're trying to match |
fe06c0d5 | 574 | an old-style initialization expression of the form INTEGER I /2/. */ |
b4f45d02 | 575 | |
576 | match | |
577 | gfc_match_data (void) | |
578 | { | |
c1977dbe | 579 | gfc_data *new_data; |
b4f45d02 | 580 | match m; |
581 | ||
c286c294 | 582 | /* Before parsing the rest of a DATA statement, check F2008:c1206. */ |
583 | if ((gfc_current_state () == COMP_FUNCTION | |
584 | || gfc_current_state () == COMP_SUBROUTINE) | |
585 | && gfc_state_stack->previous->state == COMP_INTERFACE) | |
586 | { | |
587 | gfc_error ("DATA statement at %C cannot appear within an INTERFACE"); | |
588 | return MATCH_ERROR; | |
589 | } | |
590 | ||
cbbac028 | 591 | set_in_match_data (true); |
1bfea7e8 | 592 | |
b4f45d02 | 593 | for (;;) |
594 | { | |
c1977dbe | 595 | new_data = gfc_get_data (); |
596 | new_data->where = gfc_current_locus; | |
b4f45d02 | 597 | |
c1977dbe | 598 | m = top_var_list (new_data); |
b4f45d02 | 599 | if (m != MATCH_YES) |
600 | goto cleanup; | |
601 | ||
10e78772 | 602 | if (new_data->var->iter.var |
603 | && new_data->var->iter.var->ts.type == BT_INTEGER | |
604 | && new_data->var->iter.var->symtree->n.sym->attr.implied_index == 1 | |
605 | && new_data->var->list | |
606 | && new_data->var->list->expr | |
607 | && new_data->var->list->expr->ts.type == BT_CHARACTER | |
608 | && new_data->var->list->expr->ref | |
609 | && new_data->var->list->expr->ref->type == REF_SUBSTRING) | |
610 | { | |
611 | gfc_error ("Invalid substring in data-implied-do at %L in DATA " | |
612 | "statement", &new_data->var->list->expr->where); | |
613 | goto cleanup; | |
614 | } | |
615 | ||
c1977dbe | 616 | m = top_val_list (new_data); |
b4f45d02 | 617 | if (m != MATCH_YES) |
618 | goto cleanup; | |
619 | ||
c1977dbe | 620 | new_data->next = gfc_current_ns->data; |
621 | gfc_current_ns->data = new_data; | |
b4f45d02 | 622 | |
623 | if (gfc_match_eos () == MATCH_YES) | |
624 | break; | |
625 | ||
626 | gfc_match_char (','); /* Optional comma */ | |
627 | } | |
628 | ||
cbbac028 | 629 | set_in_match_data (false); |
1bfea7e8 | 630 | |
b4f45d02 | 631 | if (gfc_pure (NULL)) |
632 | { | |
633 | gfc_error ("DATA statement at %C is not allowed in a PURE procedure"); | |
634 | return MATCH_ERROR; | |
635 | } | |
c77badf3 | 636 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
8b0a2e85 | 637 | |
b4f45d02 | 638 | return MATCH_YES; |
639 | ||
640 | cleanup: | |
cbbac028 | 641 | set_in_match_data (false); |
c1977dbe | 642 | gfc_free_data (new_data); |
b4f45d02 | 643 | return MATCH_ERROR; |
644 | } | |
645 | ||
646 | ||
647 | /************************ Declaration statements *********************/ | |
648 | ||
e97ac7c0 | 649 | |
d7cd448a | 650 | /* Like gfc_match_init_expr, but matches a 'clist' (old-style initialization |
651 | list). The difference here is the expression is a list of constants | |
7d7125df | 652 | and is surrounded by '/'. |
d7cd448a | 653 | The typespec ts must match the typespec of the variable which the |
654 | clist is initializing. | |
7d7125df | 655 | The arrayspec tells whether this should match a list of constants |
d7cd448a | 656 | corresponding to array elements or a scalar (as == NULL). */ |
657 | ||
658 | static match | |
659 | match_clist_expr (gfc_expr **result, gfc_typespec *ts, gfc_array_spec *as) | |
660 | { | |
661 | gfc_constructor_base array_head = NULL; | |
662 | gfc_expr *expr = NULL; | |
d9c759d9 | 663 | match m = MATCH_ERROR; |
d7cd448a | 664 | locus where; |
f1e4e020 | 665 | mpz_t repeat, cons_size, as_size; |
d7cd448a | 666 | bool scalar; |
667 | int cmp; | |
668 | ||
669 | gcc_assert (ts); | |
670 | ||
d7cd448a | 671 | /* We have already matched '/' - now look for a constant list, as with |
672 | top_val_list from decl.c, but append the result to an array. */ | |
673 | if (gfc_match ("/") == MATCH_YES) | |
674 | { | |
675 | gfc_error ("Empty old style initializer list at %C"); | |
d9c759d9 | 676 | return MATCH_ERROR; |
d7cd448a | 677 | } |
678 | ||
679 | where = gfc_current_locus; | |
d9c759d9 | 680 | scalar = !as || !as->rank; |
681 | ||
682 | if (!scalar && !spec_size (as, &as_size)) | |
683 | { | |
684 | gfc_error ("Array in initializer list at %L must have an explicit shape", | |
685 | as->type == AS_EXPLICIT ? &as->upper[0]->where : &where); | |
686 | /* Nothing to cleanup yet. */ | |
687 | return MATCH_ERROR; | |
688 | } | |
689 | ||
690 | mpz_init_set_ui (repeat, 0); | |
691 | ||
d7cd448a | 692 | for (;;) |
693 | { | |
694 | m = match_data_constant (&expr); | |
695 | if (m != MATCH_YES) | |
696 | expr = NULL; /* match_data_constant may set expr to garbage */ | |
697 | if (m == MATCH_NO) | |
698 | goto syntax; | |
699 | if (m == MATCH_ERROR) | |
700 | goto cleanup; | |
701 | ||
702 | /* Found r in repeat spec r*c; look for the constant to repeat. */ | |
703 | if ( gfc_match_char ('*') == MATCH_YES) | |
704 | { | |
705 | if (scalar) | |
706 | { | |
707 | gfc_error ("Repeat spec invalid in scalar initializer at %C"); | |
708 | goto cleanup; | |
709 | } | |
710 | if (expr->ts.type != BT_INTEGER) | |
711 | { | |
712 | gfc_error ("Repeat spec must be an integer at %C"); | |
713 | goto cleanup; | |
714 | } | |
715 | mpz_set (repeat, expr->value.integer); | |
716 | gfc_free_expr (expr); | |
717 | expr = NULL; | |
718 | ||
719 | m = match_data_constant (&expr); | |
720 | if (m == MATCH_NO) | |
d9c759d9 | 721 | { |
722 | m = MATCH_ERROR; | |
723 | gfc_error ("Expected data constant after repeat spec at %C"); | |
724 | } | |
d7cd448a | 725 | if (m != MATCH_YES) |
726 | goto cleanup; | |
727 | } | |
728 | /* No repeat spec, we matched the data constant itself. */ | |
729 | else | |
730 | mpz_set_ui (repeat, 1); | |
731 | ||
732 | if (!scalar) | |
733 | { | |
734 | /* Add the constant initializer as many times as repeated. */ | |
735 | for (; mpz_cmp_ui (repeat, 0) > 0; mpz_sub_ui (repeat, repeat, 1)) | |
736 | { | |
737 | /* Make sure types of elements match */ | |
738 | if(ts && !gfc_compare_types (&expr->ts, ts) | |
739 | && !gfc_convert_type (expr, ts, 1)) | |
740 | goto cleanup; | |
741 | ||
742 | gfc_constructor_append_expr (&array_head, | |
743 | gfc_copy_expr (expr), &gfc_current_locus); | |
744 | } | |
745 | ||
746 | gfc_free_expr (expr); | |
747 | expr = NULL; | |
748 | } | |
749 | ||
750 | /* For scalar initializers quit after one element. */ | |
751 | else | |
752 | { | |
753 | if(gfc_match_char ('/') != MATCH_YES) | |
754 | { | |
755 | gfc_error ("End of scalar initializer expected at %C"); | |
756 | goto cleanup; | |
757 | } | |
758 | break; | |
759 | } | |
760 | ||
761 | if (gfc_match_char ('/') == MATCH_YES) | |
762 | break; | |
763 | if (gfc_match_char (',') == MATCH_NO) | |
764 | goto syntax; | |
765 | } | |
766 | ||
d9c759d9 | 767 | /* If we break early from here out, we encountered an error. */ |
768 | m = MATCH_ERROR; | |
769 | ||
d7cd448a | 770 | /* Set up expr as an array constructor. */ |
771 | if (!scalar) | |
772 | { | |
773 | expr = gfc_get_array_expr (ts->type, ts->kind, &where); | |
774 | expr->ts = *ts; | |
775 | expr->value.constructor = array_head; | |
776 | ||
777 | expr->rank = as->rank; | |
778 | expr->shape = gfc_get_shape (expr->rank); | |
779 | ||
f1e4e020 | 780 | /* Validate sizes. We built expr ourselves, so cons_size will be |
781 | constant (we fail above for non-constant expressions). | |
d9c759d9 | 782 | We still need to verify that the sizes match. */ |
f1e4e020 | 783 | gcc_assert (gfc_array_size (expr, &cons_size)); |
d9c759d9 | 784 | cmp = mpz_cmp (cons_size, as_size); |
785 | if (cmp < 0) | |
786 | gfc_error ("Not enough elements in array initializer at %C"); | |
787 | else if (cmp > 0) | |
788 | gfc_error ("Too many elements in array initializer at %C"); | |
f1e4e020 | 789 | mpz_clear (cons_size); |
d7cd448a | 790 | if (cmp) |
f1e4e020 | 791 | goto cleanup; |
d7cd448a | 792 | } |
793 | ||
794 | /* Make sure scalar types match. */ | |
795 | else if (!gfc_compare_types (&expr->ts, ts) | |
796 | && !gfc_convert_type (expr, ts, 1)) | |
797 | goto cleanup; | |
798 | ||
799 | if (expr->ts.u.cl) | |
800 | expr->ts.u.cl->length_from_typespec = 1; | |
801 | ||
802 | *result = expr; | |
d9c759d9 | 803 | m = MATCH_YES; |
804 | goto done; | |
d7cd448a | 805 | |
806 | syntax: | |
d9c759d9 | 807 | m = MATCH_ERROR; |
d7cd448a | 808 | gfc_error ("Syntax error in old style initializer list at %C"); |
809 | ||
810 | cleanup: | |
811 | if (expr) | |
812 | expr->value.constructor = NULL; | |
813 | gfc_free_expr (expr); | |
814 | gfc_constructor_free (array_head); | |
d9c759d9 | 815 | |
816 | done: | |
d7cd448a | 817 | mpz_clear (repeat); |
d9c759d9 | 818 | if (!scalar) |
819 | mpz_clear (as_size); | |
820 | return m; | |
d7cd448a | 821 | } |
822 | ||
823 | ||
df084314 | 824 | /* Auxiliary function to merge DIMENSION and CODIMENSION array specs. */ |
e97ac7c0 | 825 | |
60e19868 | 826 | static bool |
e97ac7c0 | 827 | merge_array_spec (gfc_array_spec *from, gfc_array_spec *to, bool copy) |
828 | { | |
a83e9b8b | 829 | int i, j; |
e97ac7c0 | 830 | |
9b58b4c7 | 831 | if ((from->type == AS_ASSUMED_RANK && to->corank) |
832 | || (to->type == AS_ASSUMED_RANK && from->corank)) | |
833 | { | |
834 | gfc_error ("The assumed-rank array at %C shall not have a codimension"); | |
60e19868 | 835 | return false; |
9b58b4c7 | 836 | } |
f00f6dd6 | 837 | |
e97ac7c0 | 838 | if (to->rank == 0 && from->rank > 0) |
839 | { | |
840 | to->rank = from->rank; | |
841 | to->type = from->type; | |
842 | to->cray_pointee = from->cray_pointee; | |
843 | to->cp_was_assumed = from->cp_was_assumed; | |
844 | ||
845 | for (i = 0; i < to->corank; i++) | |
846 | { | |
a83e9b8b | 847 | /* Do not exceed the limits on lower[] and upper[]. gfortran |
848 | cleans up elsewhere. */ | |
849 | j = from->rank + i; | |
850 | if (j >= GFC_MAX_DIMENSIONS) | |
851 | break; | |
852 | ||
853 | to->lower[j] = to->lower[i]; | |
854 | to->upper[j] = to->upper[i]; | |
e97ac7c0 | 855 | } |
856 | for (i = 0; i < from->rank; i++) | |
857 | { | |
858 | if (copy) | |
859 | { | |
860 | to->lower[i] = gfc_copy_expr (from->lower[i]); | |
861 | to->upper[i] = gfc_copy_expr (from->upper[i]); | |
862 | } | |
863 | else | |
864 | { | |
865 | to->lower[i] = from->lower[i]; | |
866 | to->upper[i] = from->upper[i]; | |
867 | } | |
868 | } | |
869 | } | |
870 | else if (to->corank == 0 && from->corank > 0) | |
871 | { | |
872 | to->corank = from->corank; | |
873 | to->cotype = from->cotype; | |
874 | ||
875 | for (i = 0; i < from->corank; i++) | |
876 | { | |
a83e9b8b | 877 | /* Do not exceed the limits on lower[] and upper[]. gfortran |
878 | cleans up elsewhere. */ | |
879 | j = to->rank + i; | |
880 | if (j >= GFC_MAX_DIMENSIONS) | |
881 | break; | |
882 | ||
e97ac7c0 | 883 | if (copy) |
884 | { | |
a83e9b8b | 885 | to->lower[j] = gfc_copy_expr (from->lower[i]); |
886 | to->upper[j] = gfc_copy_expr (from->upper[i]); | |
e97ac7c0 | 887 | } |
888 | else | |
889 | { | |
a83e9b8b | 890 | to->lower[j] = from->lower[i]; |
891 | to->upper[j] = from->upper[i]; | |
e97ac7c0 | 892 | } |
893 | } | |
894 | } | |
9b58b4c7 | 895 | |
ca5fc2b6 | 896 | if (to->rank + to->corank > GFC_MAX_DIMENSIONS) |
a83e9b8b | 897 | { |
898 | gfc_error ("Sum of array rank %d and corank %d at %C exceeds maximum " | |
899 | "allowed dimensions of %d", | |
900 | to->rank, to->corank, GFC_MAX_DIMENSIONS); | |
901 | to->corank = GFC_MAX_DIMENSIONS - to->rank; | |
902 | return false; | |
903 | } | |
60e19868 | 904 | return true; |
e97ac7c0 | 905 | } |
906 | ||
907 | ||
4ee9c684 | 908 | /* Match an intent specification. Since this can only happen after an |
909 | INTENT word, a legal intent-spec must follow. */ | |
910 | ||
911 | static sym_intent | |
912 | match_intent_spec (void) | |
913 | { | |
914 | ||
915 | if (gfc_match (" ( in out )") == MATCH_YES) | |
916 | return INTENT_INOUT; | |
917 | if (gfc_match (" ( in )") == MATCH_YES) | |
918 | return INTENT_IN; | |
919 | if (gfc_match (" ( out )") == MATCH_YES) | |
920 | return INTENT_OUT; | |
921 | ||
922 | gfc_error ("Bad INTENT specification at %C"); | |
923 | return INTENT_UNKNOWN; | |
924 | } | |
925 | ||
926 | ||
927 | /* Matches a character length specification, which is either a | |
3e715c81 | 928 | specification expression, '*', or ':'. */ |
4ee9c684 | 929 | |
930 | static match | |
3e715c81 | 931 | char_len_param_value (gfc_expr **expr, bool *deferred) |
4ee9c684 | 932 | { |
294d58d3 | 933 | match m; |
934 | ||
3e715c81 | 935 | *expr = NULL; |
936 | *deferred = false; | |
937 | ||
4ee9c684 | 938 | if (gfc_match_char ('*') == MATCH_YES) |
3e715c81 | 939 | return MATCH_YES; |
940 | ||
941 | if (gfc_match_char (':') == MATCH_YES) | |
4ee9c684 | 942 | { |
34bf7ba5 | 943 | if (!gfc_notify_std (GFC_STD_F2003, "deferred type parameter at %C")) |
3e715c81 | 944 | return MATCH_ERROR; |
945 | ||
946 | *deferred = true; | |
947 | ||
4ee9c684 | 948 | return MATCH_YES; |
949 | } | |
950 | ||
294d58d3 | 951 | m = gfc_match_expr (expr); |
40de255b | 952 | |
34bf7ba5 | 953 | if (m == MATCH_NO || m == MATCH_ERROR) |
954 | return m; | |
955 | ||
956 | if (!gfc_expr_check_typed (*expr, gfc_current_ns, false)) | |
40de255b | 957 | return MATCH_ERROR; |
958 | ||
34bf7ba5 | 959 | if ((*expr)->expr_type == EXPR_FUNCTION) |
294d58d3 | 960 | { |
9c5a8acc | 961 | if ((*expr)->ts.type == BT_INTEGER |
962 | || ((*expr)->ts.type == BT_UNKNOWN | |
963 | && strcmp((*expr)->symtree->name, "null") != 0)) | |
964 | return MATCH_YES; | |
965 | ||
966 | goto syntax; | |
967 | } | |
968 | else if ((*expr)->expr_type == EXPR_CONSTANT) | |
969 | { | |
970 | /* F2008, 4.4.3.1: The length is a type parameter; its kind is | |
971 | processor dependent and its value is greater than or equal to zero. | |
972 | F2008, 4.4.3.2: If the character length parameter value evaluates | |
973 | to a negative value, the length of character entities declared | |
974 | is zero. */ | |
975 | ||
976 | if ((*expr)->ts.type == BT_INTEGER) | |
294d58d3 | 977 | { |
9c5a8acc | 978 | if (mpz_cmp_si ((*expr)->value.integer, 0) < 0) |
979 | mpz_set_si ((*expr)->value.integer, 0); | |
294d58d3 | 980 | } |
9c5a8acc | 981 | else |
982 | goto syntax; | |
294d58d3 | 983 | } |
9c5a8acc | 984 | else if ((*expr)->expr_type == EXPR_ARRAY) |
985 | goto syntax; | |
986 | else if ((*expr)->expr_type == EXPR_VARIABLE) | |
987 | { | |
165b422e | 988 | bool t; |
9c5a8acc | 989 | gfc_expr *e; |
990 | ||
991 | e = gfc_copy_expr (*expr); | |
992 | ||
993 | /* This catches the invalid code "[character(m(2:3)) :: 'x', 'y']", | |
994 | which causes an ICE if gfc_reduce_init_expr() is called. */ | |
47977082 | 995 | if (e->ref && e->ref->type == REF_ARRAY |
996 | && e->ref->u.ar.type == AR_UNKNOWN | |
9c5a8acc | 997 | && e->ref->u.ar.dimen_type[0] == DIMEN_RANGE) |
998 | goto syntax; | |
999 | ||
165b422e | 1000 | t = gfc_reduce_init_expr (e); |
1001 | ||
42f172d0 | 1002 | if (!t && e->ts.type == BT_UNKNOWN |
1003 | && e->symtree->n.sym->attr.untyped == 1 | |
a246a22d | 1004 | && (flag_implicit_none |
1005 | || e->symtree->n.sym->ns->seen_implicit_none == 1 | |
42f172d0 | 1006 | || e->symtree->n.sym->ns->parent->seen_implicit_none == 1)) |
165b422e | 1007 | { |
1008 | gfc_free_expr (e); | |
1009 | goto syntax; | |
1010 | } | |
34bf7ba5 | 1011 | |
47977082 | 1012 | if ((e->ref && e->ref->type == REF_ARRAY |
76e207a9 | 1013 | && e->ref->u.ar.type != AR_ELEMENT) |
9c5a8acc | 1014 | || (!e->ref && e->expr_type == EXPR_ARRAY)) |
1015 | { | |
1016 | gfc_free_expr (e); | |
1017 | goto syntax; | |
1018 | } | |
1019 | ||
1020 | gfc_free_expr (e); | |
1021 | } | |
34bf7ba5 | 1022 | |
294d58d3 | 1023 | return m; |
1024 | ||
1025 | syntax: | |
9c5a8acc | 1026 | gfc_error ("Scalar INTEGER expression expected at %L", &(*expr)->where); |
294d58d3 | 1027 | return MATCH_ERROR; |
4ee9c684 | 1028 | } |
1029 | ||
1030 | ||
1031 | /* A character length is a '*' followed by a literal integer or a | |
1032 | char_len_param_value in parenthesis. */ | |
1033 | ||
1034 | static match | |
ae0426ce | 1035 | match_char_length (gfc_expr **expr, bool *deferred, bool obsolescent_check) |
4ee9c684 | 1036 | { |
3bd3b616 | 1037 | int length; |
4ee9c684 | 1038 | match m; |
1039 | ||
8db94b3b | 1040 | *deferred = false; |
4ee9c684 | 1041 | m = gfc_match_char ('*'); |
1042 | if (m != MATCH_YES) | |
1043 | return m; | |
1044 | ||
3bd3b616 | 1045 | m = gfc_match_small_literal_int (&length, NULL); |
4ee9c684 | 1046 | if (m == MATCH_ERROR) |
1047 | return m; | |
1048 | ||
1049 | if (m == MATCH_YES) | |
1050 | { | |
ae0426ce | 1051 | if (obsolescent_check |
60e19868 | 1052 | && !gfc_notify_std (GFC_STD_F95_OBS, "Old-style character length at %C")) |
8e9b41f0 | 1053 | return MATCH_ERROR; |
9f4d9f83 | 1054 | *expr = gfc_get_int_expr (gfc_charlen_int_kind, NULL, length); |
4ee9c684 | 1055 | return m; |
1056 | } | |
1057 | ||
1058 | if (gfc_match_char ('(') == MATCH_NO) | |
1059 | goto syntax; | |
1060 | ||
3e715c81 | 1061 | m = char_len_param_value (expr, deferred); |
077932f9 | 1062 | if (m != MATCH_YES && gfc_matching_function) |
1063 | { | |
1064 | gfc_undo_symbols (); | |
1065 | m = MATCH_YES; | |
1066 | } | |
1067 | ||
4ee9c684 | 1068 | if (m == MATCH_ERROR) |
1069 | return m; | |
1070 | if (m == MATCH_NO) | |
1071 | goto syntax; | |
1072 | ||
1073 | if (gfc_match_char (')') == MATCH_NO) | |
1074 | { | |
1075 | gfc_free_expr (*expr); | |
1076 | *expr = NULL; | |
1077 | goto syntax; | |
1078 | } | |
1079 | ||
1080 | return MATCH_YES; | |
1081 | ||
1082 | syntax: | |
1083 | gfc_error ("Syntax error in character length specification at %C"); | |
1084 | return MATCH_ERROR; | |
1085 | } | |
1086 | ||
1087 | ||
ee893be6 | 1088 | /* Special subroutine for finding a symbol. Check if the name is found |
1089 | in the current name space. If not, and we're compiling a function or | |
1090 | subroutine and the parent compilation unit is an interface, then check | |
1091 | to see if the name we've been given is the name of the interface | |
1092 | (located in another namespace). */ | |
4ee9c684 | 1093 | |
1094 | static int | |
36b0a1b0 | 1095 | find_special (const char *name, gfc_symbol **result, bool allow_subroutine) |
4ee9c684 | 1096 | { |
1097 | gfc_state_data *s; | |
36b0a1b0 | 1098 | gfc_symtree *st; |
ee893be6 | 1099 | int i; |
4ee9c684 | 1100 | |
36b0a1b0 | 1101 | i = gfc_get_sym_tree (name, NULL, &st, allow_subroutine); |
e14bee04 | 1102 | if (i == 0) |
36b0a1b0 | 1103 | { |
1104 | *result = st ? st->n.sym : NULL; | |
1105 | goto end; | |
1106 | } | |
e14bee04 | 1107 | |
4ee9c684 | 1108 | if (gfc_current_state () != COMP_SUBROUTINE |
1109 | && gfc_current_state () != COMP_FUNCTION) | |
ee893be6 | 1110 | goto end; |
4ee9c684 | 1111 | |
1112 | s = gfc_state_stack->previous; | |
1113 | if (s == NULL) | |
ee893be6 | 1114 | goto end; |
4ee9c684 | 1115 | |
1116 | if (s->state != COMP_INTERFACE) | |
ee893be6 | 1117 | goto end; |
4ee9c684 | 1118 | if (s->sym == NULL) |
f6d0e37a | 1119 | goto end; /* Nameless interface. */ |
4ee9c684 | 1120 | |
1121 | if (strcmp (name, s->sym->name) == 0) | |
1122 | { | |
1123 | *result = s->sym; | |
1124 | return 0; | |
1125 | } | |
1126 | ||
ee893be6 | 1127 | end: |
1128 | return i; | |
4ee9c684 | 1129 | } |
1130 | ||
1131 | ||
1132 | /* Special subroutine for getting a symbol node associated with a | |
1133 | procedure name, used in SUBROUTINE and FUNCTION statements. The | |
1134 | symbol is created in the parent using with symtree node in the | |
1135 | child unit pointing to the symbol. If the current namespace has no | |
1136 | parent, then the symbol is just created in the current unit. */ | |
1137 | ||
1138 | static int | |
1a9745d2 | 1139 | get_proc_name (const char *name, gfc_symbol **result, bool module_fcn_entry) |
4ee9c684 | 1140 | { |
1141 | gfc_symtree *st; | |
1142 | gfc_symbol *sym; | |
2ddb8ed9 | 1143 | int rc = 0; |
4ee9c684 | 1144 | |
d77f260f | 1145 | /* Module functions have to be left in their own namespace because |
1146 | they have potentially (almost certainly!) already been referenced. | |
1147 | In this sense, they are rather like external functions. This is | |
1148 | fixed up in resolve.c(resolve_entries), where the symbol name- | |
1149 | space is set to point to the master function, so that the fake | |
1150 | result mechanism can work. */ | |
1151 | if (module_fcn_entry) | |
861d824f | 1152 | { |
1153 | /* Present if entry is declared to be a module procedure. */ | |
1154 | rc = gfc_find_symbol (name, gfc_current_ns->parent, 0, result); | |
c6a05992 | 1155 | |
861d824f | 1156 | if (*result == NULL) |
1157 | rc = gfc_get_symbol (name, NULL, result); | |
a78f714d | 1158 | else if (!gfc_get_symbol (name, NULL, &sym) && sym |
c6a05992 | 1159 | && (*result)->ts.type == BT_UNKNOWN |
1160 | && sym->attr.flavor == FL_UNKNOWN) | |
1161 | /* Pick up the typespec for the entry, if declared in the function | |
1162 | body. Note that this symbol is FL_UNKNOWN because it will | |
1163 | only have appeared in a type declaration. The local symtree | |
1164 | is set to point to the module symbol and a unique symtree | |
1165 | to the local version. This latter ensures a correct clearing | |
1166 | of the symbols. */ | |
a78f714d | 1167 | { |
1168 | /* If the ENTRY proceeds its specification, we need to ensure | |
1169 | that this does not raise a "has no IMPLICIT type" error. */ | |
1170 | if (sym->ts.type == BT_UNKNOWN) | |
2168078b | 1171 | sym->attr.untyped = 1; |
a78f714d | 1172 | |
2168078b | 1173 | (*result)->ts = sym->ts; |
a78f714d | 1174 | |
1175 | /* Put the symbol in the procedure namespace so that, should | |
69b1505f | 1176 | the ENTRY precede its specification, the specification |
a78f714d | 1177 | can be applied. */ |
1178 | (*result)->ns = gfc_current_ns; | |
1179 | ||
1180 | gfc_find_sym_tree (name, gfc_current_ns, 0, &st); | |
1181 | st->n.sym = *result; | |
1182 | st = gfc_get_unique_symtree (gfc_current_ns); | |
c77c84dd | 1183 | sym->refs++; |
a78f714d | 1184 | st->n.sym = sym; |
1185 | } | |
861d824f | 1186 | } |
858f9894 | 1187 | else |
1188 | rc = gfc_get_symbol (name, gfc_current_ns->parent, result); | |
4ee9c684 | 1189 | |
2ddb8ed9 | 1190 | if (rc) |
1191 | return rc; | |
1192 | ||
858f9894 | 1193 | sym = *result; |
97323566 | 1194 | if (sym->attr.proc == PROC_ST_FUNCTION) |
1195 | return rc; | |
4ee9c684 | 1196 | |
b229bdf2 | 1197 | if (sym->attr.module_procedure && sym->attr.if_source == IFSRC_IFBODY) |
4b8eb6ca | 1198 | { |
1199 | /* Create a partially populated interface symbol to carry the | |
1200 | characteristics of the procedure and the result. */ | |
dee7f6d1 | 1201 | sym->tlink = gfc_new_symbol (name, sym->ns); |
b229bdf2 | 1202 | gfc_add_type (sym->tlink, &(sym->ts), &gfc_current_locus); |
dee7f6d1 | 1203 | gfc_copy_attr (&sym->tlink->attr, &sym->attr, NULL); |
4b8eb6ca | 1204 | if (sym->attr.dimension) |
dee7f6d1 | 1205 | sym->tlink->as = gfc_copy_array_spec (sym->as); |
4b8eb6ca | 1206 | |
1207 | /* Ideally, at this point, a copy would be made of the formal | |
1208 | arguments and their namespace. However, this does not appear | |
1209 | to be necessary, albeit at the expense of not being able to | |
1210 | use gfc_compare_interfaces directly. */ | |
1211 | ||
1212 | if (sym->result && sym->result != sym) | |
1213 | { | |
dee7f6d1 | 1214 | sym->tlink->result = sym->result; |
4b8eb6ca | 1215 | sym->result = NULL; |
1216 | } | |
1217 | else if (sym->result) | |
1218 | { | |
dee7f6d1 | 1219 | sym->tlink->result = sym->tlink; |
4b8eb6ca | 1220 | } |
1221 | } | |
1222 | else if (sym && !sym->gfc_new | |
1223 | && gfc_current_state () != COMP_INTERFACE) | |
858f9894 | 1224 | { |
16f49153 | 1225 | /* Trap another encompassed procedure with the same name. All |
1226 | these conditions are necessary to avoid picking up an entry | |
1227 | whose name clashes with that of the encompassing procedure; | |
c77c84dd | 1228 | this is handled using gsymbols to register unique, globally |
16f49153 | 1229 | accessible names. */ |
858f9894 | 1230 | if (sym->attr.flavor != 0 |
1a9745d2 | 1231 | && sym->attr.proc != 0 |
05b3eb93 | 1232 | && (sym->attr.subroutine || sym->attr.function || sym->attr.entry) |
1a9745d2 | 1233 | && sym->attr.if_source != IFSRC_UNKNOWN) |
e87256b0 | 1234 | gfc_error_now ("Procedure %qs at %C is already defined at %L", |
1235 | name, &sym->declared_at); | |
858f9894 | 1236 | |
05b3eb93 | 1237 | if (sym->attr.flavor != 0 |
1238 | && sym->attr.entry && sym->attr.if_source != IFSRC_UNKNOWN) | |
1239 | gfc_error_now ("Procedure %qs at %C is already defined at %L", | |
1240 | name, &sym->declared_at); | |
1241 | ||
3eb3b784 | 1242 | if (sym->attr.external && sym->attr.procedure |
1243 | && gfc_current_state () == COMP_CONTAINS) | |
1244 | gfc_error_now ("Contained procedure %qs at %C clashes with " | |
1245 | "procedure defined at %L", | |
1246 | name, &sym->declared_at); | |
1247 | ||
5720fd2f | 1248 | /* Trap a procedure with a name the same as interface in the |
1249 | encompassing scope. */ | |
1250 | if (sym->attr.generic != 0 | |
db697236 | 1251 | && (sym->attr.subroutine || sym->attr.function) |
1252 | && !sym->attr.mod_proc) | |
e87256b0 | 1253 | gfc_error_now ("Name %qs at %C is already defined" |
1254 | " as a generic interface at %L", | |
1255 | name, &sym->declared_at); | |
5720fd2f | 1256 | |
858f9894 | 1257 | /* Trap declarations of attributes in encompassing scope. The |
1258 | signature for this is that ts.kind is set. Legitimate | |
1259 | references only set ts.type. */ | |
1260 | if (sym->ts.kind != 0 | |
1a9745d2 | 1261 | && !sym->attr.implicit_type |
1262 | && sym->attr.proc == 0 | |
1263 | && gfc_current_ns->parent != NULL | |
1264 | && sym->attr.access == 0 | |
1265 | && !module_fcn_entry) | |
e87256b0 | 1266 | gfc_error_now ("Procedure %qs at %C has an explicit interface " |
b229bdf2 | 1267 | "from a previous declaration", name); |
1268 | } | |
1269 | ||
dc38f1d9 | 1270 | /* C1246 (R1225) MODULE shall appear only in the function-stmt or |
1271 | subroutine-stmt of a module subprogram or of a nonabstract interface | |
1272 | body that is declared in the scoping unit of a module or submodule. */ | |
1273 | if (sym->attr.external | |
1274 | && (sym->attr.subroutine || sym->attr.function) | |
1275 | && sym->attr.if_source == IFSRC_IFBODY | |
1276 | && !current_attr.module_procedure | |
1277 | && sym->attr.proc == PROC_MODULE | |
1278 | && gfc_state_stack->state == COMP_CONTAINS) | |
1279 | gfc_error_now ("Procedure %qs defined in interface body at %L " | |
1280 | "clashes with internal procedure defined at %C", | |
1281 | name, &sym->declared_at); | |
1282 | ||
1283 | if (sym && !sym->gfc_new | |
1284 | && sym->attr.flavor != FL_UNKNOWN | |
1285 | && sym->attr.referenced == 0 && sym->attr.subroutine == 1 | |
1286 | && gfc_state_stack->state == COMP_CONTAINS | |
1287 | && gfc_state_stack->previous->state == COMP_SUBROUTINE) | |
1288 | gfc_error_now ("Procedure %qs at %C is already defined at %L", | |
1289 | name, &sym->declared_at); | |
858f9894 | 1290 | |
1291 | if (gfc_current_ns->parent == NULL || *result == NULL) | |
1292 | return rc; | |
4ee9c684 | 1293 | |
d77f260f | 1294 | /* Module function entries will already have a symtree in |
1295 | the current namespace but will need one at module level. */ | |
1296 | if (module_fcn_entry) | |
861d824f | 1297 | { |
1298 | /* Present if entry is declared to be a module procedure. */ | |
1299 | rc = gfc_find_sym_tree (name, gfc_current_ns->parent, 0, &st); | |
1300 | if (st == NULL) | |
1301 | st = gfc_new_symtree (&gfc_current_ns->parent->sym_root, name); | |
1302 | } | |
d77f260f | 1303 | else |
1304 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); | |
4ee9c684 | 1305 | |
4ee9c684 | 1306 | st->n.sym = sym; |
1307 | sym->refs++; | |
1308 | ||
f6d0e37a | 1309 | /* See if the procedure should be a module procedure. */ |
4ee9c684 | 1310 | |
d77f260f | 1311 | if (((sym->ns->proc_name != NULL |
b229bdf2 | 1312 | && sym->ns->proc_name->attr.flavor == FL_MODULE |
1313 | && sym->attr.proc != PROC_MODULE) | |
1314 | || (module_fcn_entry && sym->attr.proc != PROC_MODULE)) | |
1315 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) | |
4ee9c684 | 1316 | rc = 2; |
1317 | ||
1318 | return rc; | |
1319 | } | |
1320 | ||
1321 | ||
c5d33754 | 1322 | /* Verify that the given symbol representing a parameter is C |
1323 | interoperable, by checking to see if it was marked as such after | |
1324 | its declaration. If the given symbol is not interoperable, a | |
1325 | warning is reported, thus removing the need to return the status to | |
1326 | the calling function. The standard does not require the user use | |
1327 | one of the iso_c_binding named constants to declare an | |
1328 | interoperable parameter, but we can't be sure if the param is C | |
1329 | interop or not if the user doesn't. For example, integer(4) may be | |
1330 | legal Fortran, but doesn't have meaning in C. It may interop with | |
1331 | a number of the C types, which causes a problem because the | |
1332 | compiler can't know which one. This code is almost certainly not | |
1333 | portable, and the user will get what they deserve if the C type | |
1334 | across platforms isn't always interoperable with integer(4). If | |
1335 | the user had used something like integer(c_int) or integer(c_long), | |
1336 | the compiler could have automatically handled the varying sizes | |
1337 | across platforms. */ | |
1338 | ||
60e19868 | 1339 | bool |
2564c57a | 1340 | gfc_verify_c_interop_param (gfc_symbol *sym) |
c5d33754 | 1341 | { |
1342 | int is_c_interop = 0; | |
60e19868 | 1343 | bool retval = true; |
c5d33754 | 1344 | |
1345 | /* We check implicitly typed variables in symbol.c:gfc_set_default_type(). | |
1346 | Don't repeat the checks here. */ | |
1347 | if (sym->attr.implicit_type) | |
60e19868 | 1348 | return true; |
8db94b3b | 1349 | |
c5d33754 | 1350 | /* For subroutines or functions that are passed to a BIND(C) procedure, |
1351 | they're interoperable if they're BIND(C) and their params are all | |
1352 | interoperable. */ | |
1353 | if (sym->attr.flavor == FL_PROCEDURE) | |
1354 | { | |
1355 | if (sym->attr.is_bind_c == 0) | |
1356 | { | |
bf79c656 | 1357 | gfc_error_now ("Procedure %qs at %L must have the BIND(C) " |
1358 | "attribute to be C interoperable", sym->name, | |
1359 | &(sym->declared_at)); | |
60e19868 | 1360 | return false; |
c5d33754 | 1361 | } |
1362 | else | |
1363 | { | |
1364 | if (sym->attr.is_c_interop == 1) | |
1365 | /* We've already checked this procedure; don't check it again. */ | |
60e19868 | 1366 | return true; |
c5d33754 | 1367 | else |
1368 | return verify_bind_c_sym (sym, &(sym->ts), sym->attr.in_common, | |
1369 | sym->common_block); | |
1370 | } | |
1371 | } | |
8db94b3b | 1372 | |
c5d33754 | 1373 | /* See if we've stored a reference to a procedure that owns sym. */ |
1374 | if (sym->ns != NULL && sym->ns->proc_name != NULL) | |
1375 | { | |
1376 | if (sym->ns->proc_name->attr.is_bind_c == 1) | |
1377 | { | |
60e19868 | 1378 | is_c_interop = (gfc_verify_c_interop(&(sym->ts)) ? 1 : 0); |
c5d33754 | 1379 | |
1380 | if (is_c_interop != 1) | |
1381 | { | |
1382 | /* Make personalized messages to give better feedback. */ | |
1383 | if (sym->ts.type == BT_DERIVED) | |
716da296 | 1384 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1385 | "BIND(C) procedure %qs but is not C interoperable " | |
1386 | "because derived type %qs is not C interoperable", | |
c5d33754 | 1387 | sym->name, &(sym->declared_at), |
8db94b3b | 1388 | sym->ns->proc_name->name, |
eeebe20b | 1389 | sym->ts.u.derived->name); |
2564c57a | 1390 | else if (sym->ts.type == BT_CLASS) |
716da296 | 1391 | gfc_error ("Variable %qs at %L is a dummy argument to the " |
1392 | "BIND(C) procedure %qs but is not C interoperable " | |
2564c57a | 1393 | "because it is polymorphic", |
1394 | sym->name, &(sym->declared_at), | |
1395 | sym->ns->proc_name->name); | |
bf79c656 | 1396 | else if (warn_c_binding_type) |
4166acc7 | 1397 | gfc_warning (OPT_Wc_binding_type, |
1398 | "Variable %qs at %L is a dummy argument of the " | |
1399 | "BIND(C) procedure %qs but may not be C " | |
c5d33754 | 1400 | "interoperable", |
1401 | sym->name, &(sym->declared_at), | |
1402 | sym->ns->proc_name->name); | |
1403 | } | |
e4eda3ec | 1404 | |
1405 | /* Character strings are only C interoperable if they have a | |
1406 | length of 1. */ | |
1407 | if (sym->ts.type == BT_CHARACTER) | |
1408 | { | |
eeebe20b | 1409 | gfc_charlen *cl = sym->ts.u.cl; |
e4eda3ec | 1410 | if (!cl || !cl->length || cl->length->expr_type != EXPR_CONSTANT |
1411 | || mpz_cmp_si (cl->length->value.integer, 1) != 0) | |
1412 | { | |
716da296 | 1413 | gfc_error ("Character argument %qs at %L " |
e4eda3ec | 1414 | "must be length 1 because " |
716da296 | 1415 | "procedure %qs is BIND(C)", |
e4eda3ec | 1416 | sym->name, &sym->declared_at, |
1417 | sym->ns->proc_name->name); | |
60e19868 | 1418 | retval = false; |
e4eda3ec | 1419 | } |
1420 | } | |
1421 | ||
c5d33754 | 1422 | /* We have to make sure that any param to a bind(c) routine does |
1423 | not have the allocatable, pointer, or optional attributes, | |
1424 | according to J3/04-007, section 5.1. */ | |
a435dc3a | 1425 | if (sym->attr.allocatable == 1 |
2e2156cf | 1426 | && !gfc_notify_std (GFC_STD_F2018, "Variable %qs at %L with " |
0d2b3c9c | 1427 | "ALLOCATABLE attribute in procedure %qs " |
a435dc3a | 1428 | "with BIND(C)", sym->name, |
1429 | &(sym->declared_at), | |
1430 | sym->ns->proc_name->name)) | |
1431 | retval = false; | |
1432 | ||
1433 | if (sym->attr.pointer == 1 | |
2e2156cf | 1434 | && !gfc_notify_std (GFC_STD_F2018, "Variable %qs at %L with " |
0d2b3c9c | 1435 | "POINTER attribute in procedure %qs " |
a435dc3a | 1436 | "with BIND(C)", sym->name, |
1437 | &(sym->declared_at), | |
1438 | sym->ns->proc_name->name)) | |
1439 | retval = false; | |
1440 | ||
1441 | if ((sym->attr.allocatable || sym->attr.pointer) && !sym->as) | |
c5d33754 | 1442 | { |
716da296 | 1443 | gfc_error ("Scalar variable %qs at %L with POINTER or " |
1444 | "ALLOCATABLE in procedure %qs with BIND(C) is not yet" | |
a435dc3a | 1445 | " supported", sym->name, &(sym->declared_at), |
c5d33754 | 1446 | sym->ns->proc_name->name); |
60e19868 | 1447 | retval = false; |
c5d33754 | 1448 | } |
1449 | ||
495e197c | 1450 | if (sym->attr.optional == 1 && sym->attr.value) |
c5d33754 | 1451 | { |
716da296 | 1452 | gfc_error ("Variable %qs at %L cannot have both the OPTIONAL " |
1453 | "and the VALUE attribute because procedure %qs " | |
495e197c | 1454 | "is BIND(C)", sym->name, &(sym->declared_at), |
c5d33754 | 1455 | sym->ns->proc_name->name); |
60e19868 | 1456 | retval = false; |
c5d33754 | 1457 | } |
495e197c | 1458 | else if (sym->attr.optional == 1 |
2e2156cf | 1459 | && !gfc_notify_std (GFC_STD_F2018, "Variable %qs " |
60e19868 | 1460 | "at %L with OPTIONAL attribute in " |
76e207a9 | 1461 | "procedure %qs which is BIND(C)", |
1462 | sym->name, &(sym->declared_at), | |
60e19868 | 1463 | sym->ns->proc_name->name)) |
1464 | retval = false; | |
c5d33754 | 1465 | |
1466 | /* Make sure that if it has the dimension attribute, that it is | |
9350ae4e | 1467 | either assumed size or explicit shape. Deferred shape is already |
1468 | covered by the pointer/allocatable attribute. */ | |
1469 | if (sym->as != NULL && sym->as->type == AS_ASSUMED_SHAPE | |
2e2156cf | 1470 | && !gfc_notify_std (GFC_STD_F2018, "Assumed-shape array %qs " |
60e19868 | 1471 | "at %L as dummy argument to the BIND(C) " |
2f7de6c1 | 1472 | "procedure %qs at %L", sym->name, |
76e207a9 | 1473 | &(sym->declared_at), |
1474 | sym->ns->proc_name->name, | |
60e19868 | 1475 | &(sym->ns->proc_name->declared_at))) |
1476 | retval = false; | |
c5d33754 | 1477 | } |
1478 | } | |
1479 | ||
1480 | return retval; | |
1481 | } | |
1482 | ||
1483 | ||
1de1b1a9 | 1484 | |
c5d33754 | 1485 | /* Function called by variable_decl() that adds a name to the symbol table. */ |
4ee9c684 | 1486 | |
60e19868 | 1487 | static bool |
3e715c81 | 1488 | build_sym (const char *name, gfc_charlen *cl, bool cl_deferred, |
1a9745d2 | 1489 | gfc_array_spec **as, locus *var_locus) |
4ee9c684 | 1490 | { |
1491 | symbol_attribute attr; | |
1492 | gfc_symbol *sym; | |
9b49c3cb | 1493 | int upper; |
7200bfee | 1494 | gfc_symtree *st; |
1495 | ||
1496 | /* Symbols in a submodule are host associated from the parent module or | |
1497 | submodules. Therefore, they can be overridden by declarations in the | |
1498 | submodule scope. Deal with this by attaching the existing symbol to | |
1499 | a new symtree and recycling the old symtree with a new symbol... */ | |
1500 | st = gfc_find_symtree (gfc_current_ns->sym_root, name); | |
1501 | if (st != NULL && gfc_state_stack->state == COMP_SUBMODULE | |
1502 | && st->n.sym != NULL | |
1503 | && st->n.sym->attr.host_assoc && st->n.sym->attr.used_in_submodule) | |
1504 | { | |
1505 | gfc_symtree *s = gfc_get_unique_symtree (gfc_current_ns); | |
1506 | s->n.sym = st->n.sym; | |
1507 | sym = gfc_new_symbol (name, gfc_current_ns); | |
4ee9c684 | 1508 | |
7200bfee | 1509 | |
1510 | st->n.sym = sym; | |
1511 | sym->refs++; | |
1512 | gfc_set_sym_referenced (sym); | |
1513 | } | |
1514 | /* ...Otherwise generate a new symtree and new symbol. */ | |
1515 | else if (gfc_get_symbol (name, NULL, &sym)) | |
60e19868 | 1516 | return false; |
4ee9c684 | 1517 | |
9b49c3cb | 1518 | /* Check if the name has already been defined as a type. The |
1519 | first letter of the symtree will be in upper case then. Of | |
1520 | course, this is only necessary if the upper case letter is | |
1521 | actually different. */ | |
1522 | ||
1523 | upper = TOUPPER(name[0]); | |
1524 | if (upper != name[0]) | |
1525 | { | |
1526 | char u_name[GFC_MAX_SYMBOL_LEN + 1]; | |
1527 | gfc_symtree *st; | |
9b49c3cb | 1528 | |
d8aad786 | 1529 | gcc_assert (strlen(name) <= GFC_MAX_SYMBOL_LEN); |
1530 | strcpy (u_name, name); | |
9b49c3cb | 1531 | u_name[0] = upper; |
1532 | ||
1533 | st = gfc_find_symtree (gfc_current_ns->sym_root, u_name); | |
1534 | ||
d7cd448a | 1535 | /* STRUCTURE types can alias symbol names */ |
1536 | if (st != 0 && st->n.sym->attr.flavor != FL_STRUCT) | |
9b49c3cb | 1537 | { |
1538 | gfc_error ("Symbol %qs at %C also declared as a type at %L", name, | |
1539 | &st->n.sym->declared_at); | |
1540 | return false; | |
1541 | } | |
1542 | } | |
1543 | ||
f6d0e37a | 1544 | /* Start updating the symbol table. Add basic type attribute if present. */ |
4ee9c684 | 1545 | if (current_ts.type != BT_UNKNOWN |
1a9745d2 | 1546 | && (sym->attr.implicit_type == 0 |
1547 | || !gfc_compare_types (&sym->ts, ¤t_ts)) | |
60e19868 | 1548 | && !gfc_add_type (sym, ¤t_ts, var_locus)) |
1549 | return false; | |
4ee9c684 | 1550 | |
1551 | if (sym->ts.type == BT_CHARACTER) | |
3e715c81 | 1552 | { |
1553 | sym->ts.u.cl = cl; | |
1554 | sym->ts.deferred = cl_deferred; | |
1555 | } | |
4ee9c684 | 1556 | |
1557 | /* Add dimension attribute if present. */ | |
60e19868 | 1558 | if (!gfc_set_array_spec (sym, *as, var_locus)) |
1559 | return false; | |
4ee9c684 | 1560 | *as = NULL; |
1561 | ||
1562 | /* Add attribute to symbol. The copy is so that we can reset the | |
1563 | dimension attribute. */ | |
1564 | attr = current_attr; | |
1565 | attr.dimension = 0; | |
aff518b0 | 1566 | attr.codimension = 0; |
4ee9c684 | 1567 | |
60e19868 | 1568 | if (!gfc_copy_attr (&sym->attr, &attr, var_locus)) |
1569 | return false; | |
4ee9c684 | 1570 | |
c5d33754 | 1571 | /* Finish any work that may need to be done for the binding label, |
1572 | if it's a bind(c). The bind(c) attr is found before the symbol | |
1573 | is made, and before the symbol name (for data decls), so the | |
1574 | current_ts is holding the binding label, or nothing if the | |
1575 | name= attr wasn't given. Therefore, test here if we're dealing | |
1576 | with a bind(c) and make sure the binding label is set correctly. */ | |
1577 | if (sym->attr.is_bind_c == 1) | |
1578 | { | |
7b2060ba | 1579 | if (!sym->binding_label) |
c5d33754 | 1580 | { |
825718f9 | 1581 | /* Set the binding label and verify that if a NAME= was specified |
1582 | then only one identifier was in the entity-decl-list. */ | |
76e207a9 | 1583 | if (!set_binding_label (&sym->binding_label, sym->name, |
60e19868 | 1584 | num_idents_on_line)) |
1585 | return false; | |
c5d33754 | 1586 | } |
1587 | } | |
1588 | ||
1589 | /* See if we know we're in a common block, and if it's a bind(c) | |
1590 | common then we need to make sure we're an interoperable type. */ | |
1591 | if (sym->attr.in_common == 1) | |
1592 | { | |
1593 | /* Test the common block object. */ | |
1594 | if (sym->common_block != NULL && sym->common_block->is_bind_c == 1 | |
1595 | && sym->ts.is_c_interop != 1) | |
1596 | { | |
bf79c656 | 1597 | gfc_error_now ("Variable %qs in common block %qs at %C " |
c5d33754 | 1598 | "must be declared with a C interoperable " |
bf79c656 | 1599 | "kind since common block %qs is BIND(C)", |
c5d33754 | 1600 | sym->name, sym->common_block->name, |
1601 | sym->common_block->name); | |
1602 | gfc_clear_error (); | |
1603 | } | |
1604 | } | |
1605 | ||
2457a77e | 1606 | sym->attr.implied_index = 0; |
1607 | ||
9d958d5b | 1608 | /* Use the parameter expressions for a parameterized derived type. */ |
1609 | if ((sym->ts.type == BT_DERIVED || sym->ts.type == BT_CLASS) | |
1610 | && sym->ts.u.derived->attr.pdt_type && type_param_spec_list) | |
1611 | sym->param_list = gfc_copy_actual_arglist (type_param_spec_list); | |
1612 | ||
fa102e56 | 1613 | if (sym->ts.type == BT_CLASS) |
e8393d49 | 1614 | return gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as); |
1de1b1a9 | 1615 | |
60e19868 | 1616 | return true; |
4ee9c684 | 1617 | } |
1618 | ||
1a9745d2 | 1619 | |
a270dc8e | 1620 | /* Set character constant to the given length. The constant will be padded or |
d1a39099 | 1621 | truncated. If we're inside an array constructor without a typespec, we |
1622 | additionally check that all elements have the same length; check_len -1 | |
1623 | means no checking. */ | |
a270dc8e | 1624 | |
1625 | void | |
bdfec5bf | 1626 | gfc_set_constant_character_len (gfc_charlen_t len, gfc_expr *expr, |
1627 | gfc_charlen_t check_len) | |
a270dc8e | 1628 | { |
c32f863c | 1629 | gfc_char_t *s; |
bdfec5bf | 1630 | gfc_charlen_t slen; |
a270dc8e | 1631 | |
00fff882 | 1632 | if (expr->ts.type != BT_CHARACTER) |
1633 | return; | |
6ade726e | 1634 | |
3badc59b | 1635 | if (expr->expr_type != EXPR_CONSTANT) |
1636 | { | |
1637 | gfc_error_now ("CHARACTER length must be a constant at %L", &expr->where); | |
1638 | return; | |
1639 | } | |
a270dc8e | 1640 | |
1641 | slen = expr->value.character.length; | |
1642 | if (len != slen) | |
1643 | { | |
c32f863c | 1644 | s = gfc_get_wide_string (len + 1); |
1645 | memcpy (s, expr->value.character.string, | |
1646 | MIN (len, slen) * sizeof (gfc_char_t)); | |
a270dc8e | 1647 | if (len > slen) |
c32f863c | 1648 | gfc_wide_memset (&s[slen], ' ', len - slen); |
1bfea7e8 | 1649 | |
fed21cc2 | 1650 | if (warn_character_truncation && slen > len) |
bf79c656 | 1651 | gfc_warning_now (OPT_Wcharacter_truncation, |
1652 | "CHARACTER expression at %L is being truncated " | |
bdfec5bf | 1653 | "(%ld/%ld)", &expr->where, |
1654 | (long) slen, (long) len); | |
1bfea7e8 | 1655 | |
1656 | /* Apply the standard by 'hand' otherwise it gets cleared for | |
1657 | initializers. */ | |
d1a39099 | 1658 | if (check_len != -1 && slen != check_len |
1659 | && !(gfc_option.allow_std & GFC_STD_GNU)) | |
1bfea7e8 | 1660 | gfc_error_now ("The CHARACTER elements of the array constructor " |
bdfec5bf | 1661 | "at %L must have the same length (%ld/%ld)", |
1662 | &expr->where, (long) slen, | |
1663 | (long) check_len); | |
1bfea7e8 | 1664 | |
89f528df | 1665 | s[len] = '\0'; |
434f0922 | 1666 | free (expr->value.character.string); |
a270dc8e | 1667 | expr->value.character.string = s; |
1668 | expr->value.character.length = len; | |
1669 | } | |
1670 | } | |
4ee9c684 | 1671 | |
3b6a4b41 | 1672 | |
e14bee04 | 1673 | /* Function to create and update the enumerator history |
3b6a4b41 | 1674 | using the information passed as arguments. |
e14bee04 | 1675 | Pointer "max_enum" is also updated, to point to |
1676 | enum history node containing largest initializer. | |
3b6a4b41 | 1677 | |
1678 | SYM points to the symbol node of enumerator. | |
f6d0e37a | 1679 | INIT points to its enumerator value. */ |
3b6a4b41 | 1680 | |
e14bee04 | 1681 | static void |
1a9745d2 | 1682 | create_enum_history (gfc_symbol *sym, gfc_expr *init) |
3b6a4b41 | 1683 | { |
1684 | enumerator_history *new_enum_history; | |
1685 | gcc_assert (sym != NULL && init != NULL); | |
1686 | ||
48d8ad5a | 1687 | new_enum_history = XCNEW (enumerator_history); |
3b6a4b41 | 1688 | |
1689 | new_enum_history->sym = sym; | |
1690 | new_enum_history->initializer = init; | |
1691 | new_enum_history->next = NULL; | |
1692 | ||
1693 | if (enum_history == NULL) | |
1694 | { | |
1695 | enum_history = new_enum_history; | |
1696 | max_enum = enum_history; | |
1697 | } | |
1698 | else | |
1699 | { | |
1700 | new_enum_history->next = enum_history; | |
1701 | enum_history = new_enum_history; | |
1702 | ||
e14bee04 | 1703 | if (mpz_cmp (max_enum->initializer->value.integer, |
3b6a4b41 | 1704 | new_enum_history->initializer->value.integer) < 0) |
1a9745d2 | 1705 | max_enum = new_enum_history; |
3b6a4b41 | 1706 | } |
1707 | } | |
1708 | ||
1709 | ||
e14bee04 | 1710 | /* Function to free enum kind history. */ |
3b6a4b41 | 1711 | |
e14bee04 | 1712 | void |
1a9745d2 | 1713 | gfc_free_enum_history (void) |
3b6a4b41 | 1714 | { |
e14bee04 | 1715 | enumerator_history *current = enum_history; |
1716 | enumerator_history *next; | |
3b6a4b41 | 1717 | |
1718 | while (current != NULL) | |
1719 | { | |
1720 | next = current->next; | |
434f0922 | 1721 | free (current); |
3b6a4b41 | 1722 | current = next; |
1723 | } | |
1724 | max_enum = NULL; | |
1725 | enum_history = NULL; | |
1726 | } | |
1727 | ||
1728 | ||
4ee9c684 | 1729 | /* Function called by variable_decl() that adds an initialization |
1730 | expression to a symbol. */ | |
1731 | ||
60e19868 | 1732 | static bool |
f6d0e37a | 1733 | add_init_expr_to_sym (const char *name, gfc_expr **initp, locus *var_locus) |
4ee9c684 | 1734 | { |
1735 | symbol_attribute attr; | |
1736 | gfc_symbol *sym; | |
1737 | gfc_expr *init; | |
1738 | ||
1739 | init = *initp; | |
36b0a1b0 | 1740 | if (find_special (name, &sym, false)) |
60e19868 | 1741 | return false; |
4ee9c684 | 1742 | |
1743 | attr = sym->attr; | |
1744 | ||
1745 | /* If this symbol is confirming an implicit parameter type, | |
1746 | then an initialization expression is not allowed. */ | |
1747 | if (attr.flavor == FL_PARAMETER | |
1748 | && sym->value != NULL | |
1749 | && *initp != NULL) | |
1750 | { | |
716da296 | 1751 | gfc_error ("Initializer not allowed for PARAMETER %qs at %C", |
4ee9c684 | 1752 | sym->name); |
60e19868 | 1753 | return false; |
4ee9c684 | 1754 | } |
1755 | ||
1756 | if (init == NULL) | |
1757 | { | |
1758 | /* An initializer is required for PARAMETER declarations. */ | |
1759 | if (attr.flavor == FL_PARAMETER) | |
1760 | { | |
1761 | gfc_error ("PARAMETER at %L is missing an initializer", var_locus); | |
60e19868 | 1762 | return false; |
4ee9c684 | 1763 | } |
1764 | } | |
1765 | else | |
1766 | { | |
1767 | /* If a variable appears in a DATA block, it cannot have an | |
b97f1a18 | 1768 | initializer. */ |
4ee9c684 | 1769 | if (sym->attr.data) |
1770 | { | |
716da296 | 1771 | gfc_error ("Variable %qs at %C with an initializer already " |
1a9745d2 | 1772 | "appears in a DATA statement", sym->name); |
60e19868 | 1773 | return false; |
4ee9c684 | 1774 | } |
1775 | ||
cca3db55 | 1776 | /* Check if the assignment can happen. This has to be put off |
23d075f4 | 1777 | until later for derived type variables and procedure pointers. */ |
d7cd448a | 1778 | if (!gfc_bt_struct (sym->ts.type) && !gfc_bt_struct (init->ts.type) |
1de1b1a9 | 1779 | && sym->ts.type != BT_CLASS && init->ts.type != BT_CLASS |
8db94b3b | 1780 | && !sym->attr.proc_pointer |
60e19868 | 1781 | && !gfc_check_assign_symbol (sym, NULL, init)) |
1782 | return false; | |
4ee9c684 | 1783 | |
eeebe20b | 1784 | if (sym->ts.type == BT_CHARACTER && sym->ts.u.cl |
da540712 | 1785 | && init->ts.type == BT_CHARACTER) |
a270dc8e | 1786 | { |
1787 | /* Update symbol character length according initializer. */ | |
60e19868 | 1788 | if (!gfc_check_assign_symbol (sym, NULL, init)) |
1789 | return false; | |
da540712 | 1790 | |
eeebe20b | 1791 | if (sym->ts.u.cl->length == NULL) |
a270dc8e | 1792 | { |
9f4d9f83 | 1793 | gfc_charlen_t clen; |
f6d0e37a | 1794 | /* If there are multiple CHARACTER variables declared on the |
1795 | same line, we don't want them to share the same length. */ | |
d270ce52 | 1796 | sym->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
e9c873a4 | 1797 | |
03c2a028 | 1798 | if (sym->attr.flavor == FL_PARAMETER) |
1799 | { | |
1800 | if (init->expr_type == EXPR_CONSTANT) | |
1801 | { | |
1802 | clen = init->value.character.length; | |
126387b5 | 1803 | sym->ts.u.cl->length |
9f4d9f83 | 1804 | = gfc_get_int_expr (gfc_charlen_int_kind, |
126387b5 | 1805 | NULL, clen); |
03c2a028 | 1806 | } |
1807 | else if (init->expr_type == EXPR_ARRAY) | |
1808 | { | |
fc9b0d53 | 1809 | if (init->ts.u.cl && init->ts.u.cl->length) |
cde225a2 | 1810 | { |
1811 | const gfc_expr *length = init->ts.u.cl->length; | |
1812 | if (length->expr_type != EXPR_CONSTANT) | |
1813 | { | |
1814 | gfc_error ("Cannot initialize parameter array " | |
1815 | "at %L " | |
1816 | "with variable length elements", | |
1817 | &sym->declared_at); | |
1818 | return false; | |
1819 | } | |
1820 | clen = mpz_get_si (length->value.integer); | |
1821 | } | |
9123b22a | 1822 | else if (init->value.constructor) |
1823 | { | |
1824 | gfc_constructor *c; | |
76e207a9 | 1825 | c = gfc_constructor_first (init->value.constructor); |
9123b22a | 1826 | clen = c->expr->value.character.length; |
1827 | } | |
1828 | else | |
1829 | gcc_unreachable (); | |
126387b5 | 1830 | sym->ts.u.cl->length |
9f4d9f83 | 1831 | = gfc_get_int_expr (gfc_charlen_int_kind, |
126387b5 | 1832 | NULL, clen); |
03c2a028 | 1833 | } |
eeebe20b | 1834 | else if (init->ts.u.cl && init->ts.u.cl->length) |
1835 | sym->ts.u.cl->length = | |
1836 | gfc_copy_expr (sym->value->ts.u.cl->length); | |
03c2a028 | 1837 | } |
a270dc8e | 1838 | } |
1839 | /* Update initializer character length according symbol. */ | |
eeebe20b | 1840 | else if (sym->ts.u.cl->length->expr_type == EXPR_CONSTANT) |
a270dc8e | 1841 | { |
f8e2139b | 1842 | if (!gfc_specification_expr (sym->ts.u.cl->length)) |
1843 | return false; | |
1844 | ||
90ace78f | 1845 | int k = gfc_validate_kind (BT_INTEGER, gfc_charlen_int_kind, |
1846 | false); | |
1847 | /* resolve_charlen will complain later on if the length | |
1848 | is too large. Just skeep the initialization in that case. */ | |
1849 | if (mpz_cmp (sym->ts.u.cl->length->value.integer, | |
1850 | gfc_integer_kinds[k].huge) <= 0) | |
a270dc8e | 1851 | { |
90ace78f | 1852 | HOST_WIDE_INT len |
1853 | = gfc_mpz_get_hwi (sym->ts.u.cl->length->value.integer); | |
1854 | ||
1855 | if (init->expr_type == EXPR_CONSTANT) | |
1856 | gfc_set_constant_character_len (len, init, -1); | |
1857 | else if (init->expr_type == EXPR_ARRAY) | |
1858 | { | |
1859 | gfc_constructor *c; | |
126387b5 | 1860 | |
90ace78f | 1861 | /* Build a new charlen to prevent simplification from |
1862 | deleting the length before it is resolved. */ | |
1863 | init->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); | |
1864 | init->ts.u.cl->length | |
1865 | = gfc_copy_expr (sym->ts.u.cl->length); | |
39908fd9 | 1866 | |
90ace78f | 1867 | for (c = gfc_constructor_first (init->value.constructor); |
1868 | c; c = gfc_constructor_next (c)) | |
1869 | gfc_set_constant_character_len (len, c->expr, -1); | |
1870 | } | |
a270dc8e | 1871 | } |
1872 | } | |
1873 | } | |
1874 | ||
ae2864a8 | 1875 | /* If sym is implied-shape, set its upper bounds from init. */ |
1876 | if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension | |
1877 | && sym->as->type == AS_IMPLIED_SHAPE) | |
1878 | { | |
1879 | int dim; | |
1880 | ||
1881 | if (init->rank == 0) | |
1882 | { | |
1883 | gfc_error ("Can't initialize implied-shape array at %L" | |
1884 | " with scalar", &sym->declared_at); | |
60e19868 | 1885 | return false; |
ae2864a8 | 1886 | } |
ae2864a8 | 1887 | |
1888 | /* Shape should be present, we get an initialization expression. */ | |
1889 | gcc_assert (init->shape); | |
1890 | ||
1891 | for (dim = 0; dim < sym->as->rank; ++dim) | |
1892 | { | |
1893 | int k; | |
0c0c5469 | 1894 | gfc_expr *e, *lower; |
8db94b3b | 1895 | |
ae2864a8 | 1896 | lower = sym->as->lower[dim]; |
0c0c5469 | 1897 | |
76e207a9 | 1898 | /* If the lower bound is an array element from another |
0c0c5469 | 1899 | parameterized array, then it is marked with EXPR_VARIABLE and |
1900 | is an initialization expression. Try to reduce it. */ | |
1901 | if (lower->expr_type == EXPR_VARIABLE) | |
1902 | gfc_reduce_init_expr (lower); | |
1903 | ||
1904 | if (lower->expr_type == EXPR_CONSTANT) | |
1905 | { | |
1906 | /* All dimensions must be without upper bound. */ | |
1907 | gcc_assert (!sym->as->upper[dim]); | |
1908 | ||
1909 | k = lower->ts.kind; | |
1910 | e = gfc_get_constant_expr (BT_INTEGER, k, &sym->declared_at); | |
1911 | mpz_add (e->value.integer, lower->value.integer, | |
1912 | init->shape[dim]); | |
1913 | mpz_sub_ui (e->value.integer, e->value.integer, 1); | |
1914 | sym->as->upper[dim] = e; | |
1915 | } | |
1916 | else | |
ae2864a8 | 1917 | { |
1918 | gfc_error ("Non-constant lower bound in implied-shape" | |
1919 | " declaration at %L", &lower->where); | |
60e19868 | 1920 | return false; |
ae2864a8 | 1921 | } |
ae2864a8 | 1922 | } |
1923 | ||
1924 | sym->as->type = AS_EXPLICIT; | |
1925 | } | |
1926 | ||
c5d33754 | 1927 | /* Need to check if the expression we initialized this |
1928 | to was one of the iso_c_binding named constants. If so, | |
1929 | and we're a parameter (constant), let it be iso_c. | |
1930 | For example: | |
1931 | integer(c_int), parameter :: my_int = c_int | |
1932 | integer(my_int) :: my_int_2 | |
1933 | If we mark my_int as iso_c (since we can see it's value | |
1934 | is equal to one of the named constants), then my_int_2 | |
1935 | will be considered C interoperable. */ | |
d7cd448a | 1936 | if (sym->ts.type != BT_CHARACTER && !gfc_bt_struct (sym->ts.type)) |
c5d33754 | 1937 | { |
1938 | sym->ts.is_iso_c |= init->ts.is_iso_c; | |
1939 | sym->ts.is_c_interop |= init->ts.is_c_interop; | |
1940 | /* attr bits needed for module files. */ | |
1941 | sym->attr.is_iso_c |= init->ts.is_iso_c; | |
1942 | sym->attr.is_c_interop |= init->ts.is_c_interop; | |
1943 | if (init->ts.is_iso_c) | |
1944 | sym->ts.f90_type = init->ts.f90_type; | |
1945 | } | |
126387b5 | 1946 | |
4ee9c684 | 1947 | /* Add initializer. Make sure we keep the ranks sane. */ |
1948 | if (sym->attr.dimension && init->rank == 0) | |
7baa3fb4 | 1949 | { |
1950 | mpz_t size; | |
1951 | gfc_expr *array; | |
7baa3fb4 | 1952 | int n; |
1953 | if (sym->attr.flavor == FL_PARAMETER | |
1954 | && init->expr_type == EXPR_CONSTANT | |
60e19868 | 1955 | && spec_size (sym->as, &size) |
7baa3fb4 | 1956 | && mpz_cmp_si (size, 0) > 0) |
1957 | { | |
126387b5 | 1958 | array = gfc_get_array_expr (init->ts.type, init->ts.kind, |
1959 | &init->where); | |
7baa3fb4 | 1960 | for (n = 0; n < (int)mpz_get_si (size); n++) |
126387b5 | 1961 | gfc_constructor_append_expr (&array->value.constructor, |
1962 | n == 0 | |
1963 | ? init | |
1964 | : gfc_copy_expr (init), | |
1965 | &init->where); | |
8db94b3b | 1966 | |
7baa3fb4 | 1967 | array->shape = gfc_get_shape (sym->as->rank); |
1968 | for (n = 0; n < sym->as->rank; n++) | |
1969 | spec_dimen_size (sym->as, n, &array->shape[n]); | |
1970 | ||
1971 | init = array; | |
1972 | mpz_clear (size); | |
1973 | } | |
1974 | init->rank = sym->as->rank; | |
1975 | } | |
4ee9c684 | 1976 | |
1977 | sym->value = init; | |
3cd3c667 | 1978 | if (sym->attr.save == SAVE_NONE) |
1979 | sym->attr.save = SAVE_IMPLICIT; | |
4ee9c684 | 1980 | *initp = NULL; |
1981 | } | |
1982 | ||
60e19868 | 1983 | return true; |
4ee9c684 | 1984 | } |
1985 | ||
1986 | ||
1987 | /* Function called by variable_decl() that adds a name to a structure | |
1988 | being built. */ | |
1989 | ||
60e19868 | 1990 | static bool |
1a9745d2 | 1991 | build_struct (const char *name, gfc_charlen *cl, gfc_expr **init, |
1992 | gfc_array_spec **as) | |
4ee9c684 | 1993 | { |
d7cd448a | 1994 | gfc_state_data *s; |
4ee9c684 | 1995 | gfc_component *c; |
1996 | ||
53d2e124 | 1997 | /* F03:C438/C439. If the current symbol is of the same derived type that we're |
4ee9c684 | 1998 | constructing, it must have the pointer attribute. */ |
53d2e124 | 1999 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
eeebe20b | 2000 | && current_ts.u.derived == gfc_current_block () |
4ee9c684 | 2001 | && current_attr.pointer == 0) |
2002 | { | |
dd7553fe | 2003 | if (current_attr.allocatable |
2004 | && !gfc_notify_std(GFC_STD_F2008, "Component at %C " | |
2005 | "must have the POINTER attribute")) | |
2006 | { | |
2007 | return false; | |
2008 | } | |
2009 | else if (current_attr.allocatable == 0) | |
2010 | { | |
abfb4be5 | 2011 | gfc_error ("Component at %C must have the POINTER attribute"); |
2012 | return false; | |
2013 | } | |
4ee9c684 | 2014 | } |
abfb4be5 | 2015 | |
2016 | /* F03:C437. */ | |
2017 | if (current_ts.type == BT_CLASS | |
2018 | && !(current_attr.pointer || current_attr.allocatable)) | |
2019 | { | |
2020 | gfc_error ("Component %qs with CLASS at %C must be allocatable " | |
2021 | "or pointer", name); | |
2022 | return false; | |
dd7553fe | 2023 | } |
4ee9c684 | 2024 | |
1a9745d2 | 2025 | if (gfc_current_block ()->attr.pointer && (*as)->rank != 0) |
4ee9c684 | 2026 | { |
2027 | if ((*as)->type != AS_DEFERRED && (*as)->type != AS_EXPLICIT) | |
2028 | { | |
2029 | gfc_error ("Array component of structure at %C must have explicit " | |
2030 | "or deferred shape"); | |
60e19868 | 2031 | return false; |
4ee9c684 | 2032 | } |
2033 | } | |
2034 | ||
d7cd448a | 2035 | /* If we are in a nested union/map definition, gfc_add_component will not |
2036 | properly find repeated components because: | |
7d7125df | 2037 | (i) gfc_add_component does a flat search, where components of unions |
d7cd448a | 2038 | and maps are implicity chained so nested components may conflict. |
2039 | (ii) Unions and maps are not linked as components of their parent | |
2040 | structures until after they are parsed. | |
2041 | For (i) we use gfc_find_component which searches recursively, and for (ii) | |
2042 | we search each block directly from the parse stack until we find the top | |
2043 | level structure. */ | |
2044 | ||
2045 | s = gfc_state_stack; | |
2046 | if (s->state == COMP_UNION || s->state == COMP_MAP) | |
2047 | { | |
2048 | while (s->state == COMP_UNION || gfc_comp_struct (s->state)) | |
2049 | { | |
2050 | c = gfc_find_component (s->sym, name, true, true, NULL); | |
2051 | if (c != NULL) | |
2052 | { | |
1b7008c4 | 2053 | gfc_error_now ("Component %qs at %C already declared at %L", |
d7cd448a | 2054 | name, &c->loc); |
2055 | return false; | |
2056 | } | |
2057 | /* Break after we've searched the entire chain. */ | |
2058 | if (s->state == COMP_DERIVED || s->state == COMP_STRUCTURE) | |
2059 | break; | |
2060 | s = s->previous; | |
2061 | } | |
2062 | } | |
2063 | ||
60e19868 | 2064 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
2065 | return false; | |
4ee9c684 | 2066 | |
2067 | c->ts = current_ts; | |
eeebe20b | 2068 | if (c->ts.type == BT_CHARACTER) |
2069 | c->ts.u.cl = cl; | |
9d958d5b | 2070 | |
2071 | if (c->ts.type != BT_CLASS && c->ts.type != BT_DERIVED | |
f0efd2e8 | 2072 | && (c->ts.kind == 0 || c->ts.type == BT_CHARACTER) |
2073 | && saved_kind_expr != NULL) | |
9d958d5b | 2074 | c->kind_expr = gfc_copy_expr (saved_kind_expr); |
2075 | ||
3be2b8d5 | 2076 | c->attr = current_attr; |
4ee9c684 | 2077 | |
2078 | c->initializer = *init; | |
2079 | *init = NULL; | |
2080 | ||
2081 | c->as = *as; | |
2082 | if (c->as != NULL) | |
aff518b0 | 2083 | { |
2084 | if (c->as->corank) | |
2085 | c->attr.codimension = 1; | |
2086 | if (c->as->rank) | |
2087 | c->attr.dimension = 1; | |
2088 | } | |
4ee9c684 | 2089 | *as = NULL; |
2090 | ||
36d310d0 | 2091 | gfc_apply_init (&c->ts, &c->attr, c->initializer); |
a2f51d5f | 2092 | |
4ee9c684 | 2093 | /* Check array components. */ |
3be2b8d5 | 2094 | if (!c->attr.dimension) |
b3704193 | 2095 | goto scalar; |
4ee9c684 | 2096 | |
3be2b8d5 | 2097 | if (c->attr.pointer) |
4ee9c684 | 2098 | { |
2099 | if (c->as->type != AS_DEFERRED) | |
2100 | { | |
2294b616 | 2101 | gfc_error ("Pointer array component of structure at %C must have a " |
2102 | "deferred shape"); | |
2fa20713 | 2103 | return false; |
2294b616 | 2104 | } |
2105 | } | |
3be2b8d5 | 2106 | else if (c->attr.allocatable) |
2294b616 | 2107 | { |
2108 | if (c->as->type != AS_DEFERRED) | |
2109 | { | |
2110 | gfc_error ("Allocatable component of structure at %C must have a " | |
2111 | "deferred shape"); | |
2fa20713 | 2112 | return false; |
4ee9c684 | 2113 | } |
2114 | } | |
2115 | else | |
2116 | { | |
2117 | if (c->as->type != AS_EXPLICIT) | |
2118 | { | |
1a9745d2 | 2119 | gfc_error ("Array component of structure at %C must have an " |
2120 | "explicit shape"); | |
2fa20713 | 2121 | return false; |
4ee9c684 | 2122 | } |
2123 | } | |
2124 | ||
b3704193 | 2125 | scalar: |
2126 | if (c->ts.type == BT_CLASS) | |
2fa20713 | 2127 | return gfc_build_class_symbol (&c->ts, &c->attr, &c->as); |
431a19be | 2128 | |
9d958d5b | 2129 | if (c->attr.pdt_kind || c->attr.pdt_len) |
2130 | { | |
2131 | gfc_symbol *sym; | |
2132 | gfc_find_symbol (c->name, gfc_current_block ()->f2k_derived, | |
2133 | 0, &sym); | |
2134 | if (sym == NULL) | |
2135 | { | |
2136 | gfc_error ("Type parameter %qs at %C has no corresponding entry " | |
2137 | "in the type parameter name list at %L", | |
2138 | c->name, &gfc_current_block ()->declared_at); | |
2139 | return false; | |
2140 | } | |
2141 | sym->ts = c->ts; | |
2142 | sym->attr.pdt_kind = c->attr.pdt_kind; | |
2143 | sym->attr.pdt_len = c->attr.pdt_len; | |
2144 | if (c->initializer) | |
2145 | sym->value = gfc_copy_expr (c->initializer); | |
2146 | sym->attr.flavor = FL_VARIABLE; | |
2147 | } | |
2148 | ||
2149 | if ((c->ts.type == BT_DERIVED || c->ts.type == BT_CLASS) | |
2150 | && c->ts.u.derived && c->ts.u.derived->attr.pdt_template | |
2151 | && decl_type_param_list) | |
2152 | c->param_list = gfc_copy_actual_arglist (decl_type_param_list); | |
2153 | ||
2fa20713 | 2154 | return true; |
4ee9c684 | 2155 | } |
2156 | ||
2157 | ||
2158 | /* Match a 'NULL()', and possibly take care of some side effects. */ | |
2159 | ||
2160 | match | |
1a9745d2 | 2161 | gfc_match_null (gfc_expr **result) |
4ee9c684 | 2162 | { |
2163 | gfc_symbol *sym; | |
f9d34e9a | 2164 | match m, m2 = MATCH_NO; |
4ee9c684 | 2165 | |
f9d34e9a | 2166 | if ((m = gfc_match (" null ( )")) == MATCH_ERROR) |
2167 | return MATCH_ERROR; | |
2168 | ||
2169 | if (m == MATCH_NO) | |
2170 | { | |
2171 | locus old_loc; | |
2172 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
2173 | ||
d780a64b | 2174 | if ((m2 = gfc_match (" null (")) != MATCH_YES) |
f9d34e9a | 2175 | return m2; |
2176 | ||
2177 | old_loc = gfc_current_locus; | |
2178 | if ((m2 = gfc_match (" %n ) ", name)) == MATCH_ERROR) | |
2179 | return MATCH_ERROR; | |
2180 | if (m2 != MATCH_YES | |
2181 | && ((m2 = gfc_match (" mold = %n )", name)) == MATCH_ERROR)) | |
2182 | return MATCH_ERROR; | |
2183 | if (m2 == MATCH_NO) | |
2184 | { | |
2185 | gfc_current_locus = old_loc; | |
2186 | return MATCH_NO; | |
2187 | } | |
2188 | } | |
4ee9c684 | 2189 | |
2190 | /* The NULL symbol now has to be/become an intrinsic function. */ | |
2191 | if (gfc_get_symbol ("null", NULL, &sym)) | |
2192 | { | |
2193 | gfc_error ("NULL() initialization at %C is ambiguous"); | |
2194 | return MATCH_ERROR; | |
2195 | } | |
2196 | ||
2197 | gfc_intrinsic_symbol (sym); | |
2198 | ||
2199 | if (sym->attr.proc != PROC_INTRINSIC | |
ddf8ce2d | 2200 | && !(sym->attr.use_assoc && sym->attr.intrinsic) |
60e19868 | 2201 | && (!gfc_add_procedure(&sym->attr, PROC_INTRINSIC, sym->name, NULL) |
2202 | || !gfc_add_function (&sym->attr, sym->name, NULL))) | |
4ee9c684 | 2203 | return MATCH_ERROR; |
2204 | ||
126387b5 | 2205 | *result = gfc_get_null_expr (&gfc_current_locus); |
4ee9c684 | 2206 | |
f9d34e9a | 2207 | /* Invalid per F2008, C512. */ |
2208 | if (m2 == MATCH_YES) | |
2209 | { | |
2210 | gfc_error ("NULL() initialization at %C may not have MOLD"); | |
2211 | return MATCH_ERROR; | |
2212 | } | |
2213 | ||
4ee9c684 | 2214 | return MATCH_YES; |
2215 | } | |
2216 | ||
2217 | ||
23d075f4 | 2218 | /* Match the initialization expr for a data pointer or procedure pointer. */ |
2219 | ||
2220 | static match | |
2221 | match_pointer_init (gfc_expr **init, int procptr) | |
2222 | { | |
2223 | match m; | |
2224 | ||
d7cd448a | 2225 | if (gfc_pure (NULL) && !gfc_comp_struct (gfc_state_stack->state)) |
23d075f4 | 2226 | { |
2227 | gfc_error ("Initialization of pointer at %C is not allowed in " | |
2228 | "a PURE procedure"); | |
2229 | return MATCH_ERROR; | |
2230 | } | |
c77badf3 | 2231 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
23d075f4 | 2232 | |
df084314 | 2233 | /* Match NULL() initialization. */ |
23d075f4 | 2234 | m = gfc_match_null (init); |
2235 | if (m != MATCH_NO) | |
2236 | return m; | |
2237 | ||
2238 | /* Match non-NULL initialization. */ | |
f3efaada | 2239 | gfc_matching_ptr_assignment = !procptr; |
23d075f4 | 2240 | gfc_matching_procptr_assignment = procptr; |
2241 | m = gfc_match_rvalue (init); | |
f3efaada | 2242 | gfc_matching_ptr_assignment = 0; |
23d075f4 | 2243 | gfc_matching_procptr_assignment = 0; |
2244 | if (m == MATCH_ERROR) | |
2245 | return MATCH_ERROR; | |
2246 | else if (m == MATCH_NO) | |
2247 | { | |
2248 | gfc_error ("Error in pointer initialization at %C"); | |
2249 | return MATCH_ERROR; | |
2250 | } | |
2251 | ||
7c94d8e5 | 2252 | if (!procptr && !gfc_resolve_expr (*init)) |
2253 | return MATCH_ERROR; | |
8db94b3b | 2254 | |
60e19868 | 2255 | if (!gfc_notify_std (GFC_STD_F2008, "non-NULL pointer " |
2256 | "initialization at %C")) | |
23d075f4 | 2257 | return MATCH_ERROR; |
2258 | ||
2259 | return MATCH_YES; | |
2260 | } | |
2261 | ||
2262 | ||
60e19868 | 2263 | static bool |
f3e89339 | 2264 | check_function_name (char *name) |
2265 | { | |
2266 | /* In functions that have a RESULT variable defined, the function name always | |
2267 | refers to function calls. Therefore, the name is not allowed to appear in | |
2268 | specification statements. When checking this, be careful about | |
2269 | 'hidden' procedure pointer results ('ppr@'). */ | |
2270 | ||
2271 | if (gfc_current_state () == COMP_FUNCTION) | |
2272 | { | |
2273 | gfc_symbol *block = gfc_current_block (); | |
2274 | if (block && block->result && block->result != block | |
2275 | && strcmp (block->result->name, "ppr@") != 0 | |
2276 | && strcmp (block->name, name) == 0) | |
2277 | { | |
2c6ca8fc | 2278 | gfc_error ("RESULT variable %qs at %L prohibits FUNCTION name %qs at %C " |
2279 | "from appearing in a specification statement", | |
2280 | block->result->name, &block->result->declared_at, name); | |
60e19868 | 2281 | return false; |
f3e89339 | 2282 | } |
2283 | } | |
2284 | ||
60e19868 | 2285 | return true; |
f3e89339 | 2286 | } |
2287 | ||
2288 | ||
4ee9c684 | 2289 | /* Match a variable name with an optional initializer. When this |
2290 | subroutine is called, a variable is expected to be parsed next. | |
2291 | Depending on what is happening at the moment, updates either the | |
2292 | symbol table or the current interface. */ | |
2293 | ||
2294 | static match | |
3923b69f | 2295 | variable_decl (int elem) |
4ee9c684 | 2296 | { |
2297 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8ef2cf76 | 2298 | static unsigned int fill_id = 0; |
4ee9c684 | 2299 | gfc_expr *initializer, *char_len; |
2300 | gfc_array_spec *as; | |
b549d2a5 | 2301 | gfc_array_spec *cp_as; /* Extra copy for Cray Pointees. */ |
4ee9c684 | 2302 | gfc_charlen *cl; |
3e715c81 | 2303 | bool cl_deferred; |
4ee9c684 | 2304 | locus var_locus; |
2305 | match m; | |
60e19868 | 2306 | bool t; |
b549d2a5 | 2307 | gfc_symbol *sym; |
4ee9c684 | 2308 | |
2309 | initializer = NULL; | |
2310 | as = NULL; | |
b549d2a5 | 2311 | cp_as = NULL; |
4ee9c684 | 2312 | |
2313 | /* When we get here, we've just matched a list of attributes and | |
2314 | maybe a type and a double colon. The next thing we expect to see | |
2315 | is the name of the symbol. */ | |
8ef2cf76 | 2316 | |
2317 | /* If we are parsing a structure with legacy support, we allow the symbol | |
2318 | name to be '%FILL' which gives it an anonymous (inaccessible) name. */ | |
2319 | m = MATCH_NO; | |
2320 | gfc_gobble_whitespace (); | |
2321 | if (gfc_peek_ascii_char () == '%') | |
2322 | { | |
2323 | gfc_next_ascii_char (); | |
2324 | m = gfc_match ("fill"); | |
2325 | } | |
2326 | ||
4ee9c684 | 2327 | if (m != MATCH_YES) |
8ef2cf76 | 2328 | { |
2329 | m = gfc_match_name (name); | |
2330 | if (m != MATCH_YES) | |
2331 | goto cleanup; | |
2332 | } | |
2333 | ||
2334 | else | |
2335 | { | |
2336 | m = MATCH_ERROR; | |
2337 | if (gfc_current_state () != COMP_STRUCTURE) | |
2338 | { | |
2339 | if (flag_dec_structure) | |
2340 | gfc_error ("%qs not allowed outside STRUCTURE at %C", "%FILL"); | |
2341 | else | |
2342 | gfc_error ("%qs at %C is a DEC extension, enable with " | |
2343 | "%<-fdec-structure%>", "%FILL"); | |
2344 | goto cleanup; | |
2345 | } | |
2346 | ||
2347 | if (attr_seen) | |
2348 | { | |
2349 | gfc_error ("%qs entity cannot have attributes at %C", "%FILL"); | |
2350 | goto cleanup; | |
2351 | } | |
2352 | ||
2353 | /* %FILL components are given invalid fortran names. */ | |
2354 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "%%FILL%u", fill_id++); | |
2355 | m = MATCH_YES; | |
2356 | } | |
4ee9c684 | 2357 | |
cbb9e6aa | 2358 | var_locus = gfc_current_locus; |
4ee9c684 | 2359 | |
2360 | /* Now we could see the optional array spec. or character length. */ | |
aff518b0 | 2361 | m = gfc_match_array_spec (&as, true, true); |
eae6c6c1 | 2362 | if (m == MATCH_ERROR) |
4ee9c684 | 2363 | goto cleanup; |
3b6a4b41 | 2364 | |
4ee9c684 | 2365 | if (m == MATCH_NO) |
2366 | as = gfc_copy_array_spec (current_as); | |
9b58b4c7 | 2367 | else if (current_as |
60e19868 | 2368 | && !merge_array_spec (current_as, as, true)) |
9b58b4c7 | 2369 | { |
2370 | m = MATCH_ERROR; | |
2371 | goto cleanup; | |
2372 | } | |
4ee9c684 | 2373 | |
829d7a08 | 2374 | if (flag_cray_pointer) |
eae6c6c1 | 2375 | cp_as = gfc_copy_array_spec (as); |
2376 | ||
ae2864a8 | 2377 | /* At this point, we know for sure if the symbol is PARAMETER and can thus |
2378 | determine (and check) whether it can be implied-shape. If it | |
2379 | was parsed as assumed-size, change it because PARAMETERs can not | |
fc386590 | 2380 | be assumed-size. |
2381 | ||
2382 | An explicit-shape-array cannot appear under several conditions. | |
2383 | That check is done here as well. */ | |
ae2864a8 | 2384 | if (as) |
2385 | { | |
2386 | if (as->type == AS_IMPLIED_SHAPE && current_attr.flavor != FL_PARAMETER) | |
2387 | { | |
2388 | m = MATCH_ERROR; | |
716da296 | 2389 | gfc_error ("Non-PARAMETER symbol %qs at %L can't be implied-shape", |
ae2864a8 | 2390 | name, &var_locus); |
2391 | goto cleanup; | |
2392 | } | |
2393 | ||
2394 | if (as->type == AS_ASSUMED_SIZE && as->rank == 1 | |
2395 | && current_attr.flavor == FL_PARAMETER) | |
2396 | as->type = AS_IMPLIED_SHAPE; | |
2397 | ||
2398 | if (as->type == AS_IMPLIED_SHAPE | |
76e207a9 | 2399 | && !gfc_notify_std (GFC_STD_F2008, "Implied-shape array at %L", |
60e19868 | 2400 | &var_locus)) |
ae2864a8 | 2401 | { |
2402 | m = MATCH_ERROR; | |
2403 | goto cleanup; | |
2404 | } | |
fc386590 | 2405 | |
2406 | /* F2018:C830 (R816) An explicit-shape-spec whose bounds are not | |
2407 | constant expressions shall appear only in a subprogram, derived | |
2408 | type definition, BLOCK construct, or interface body. */ | |
2409 | if (as->type == AS_EXPLICIT | |
2410 | && gfc_current_state () != COMP_BLOCK | |
2411 | && gfc_current_state () != COMP_DERIVED | |
2412 | && gfc_current_state () != COMP_FUNCTION | |
2413 | && gfc_current_state () != COMP_INTERFACE | |
2414 | && gfc_current_state () != COMP_SUBROUTINE) | |
2415 | { | |
2416 | gfc_expr *e; | |
2417 | bool not_constant = false; | |
2418 | ||
2419 | for (int i = 0; i < as->rank; i++) | |
2420 | { | |
2421 | e = gfc_copy_expr (as->lower[i]); | |
2422 | gfc_resolve_expr (e); | |
2423 | gfc_simplify_expr (e, 0); | |
2424 | if (e && (e->expr_type != EXPR_CONSTANT)) | |
2425 | { | |
2426 | not_constant = true; | |
2427 | break; | |
2428 | } | |
2429 | gfc_free_expr (e); | |
2430 | ||
2431 | e = gfc_copy_expr (as->upper[i]); | |
2432 | gfc_resolve_expr (e); | |
2433 | gfc_simplify_expr (e, 0); | |
2434 | if (e && (e->expr_type != EXPR_CONSTANT)) | |
2435 | { | |
2436 | not_constant = true; | |
2437 | break; | |
2438 | } | |
2439 | gfc_free_expr (e); | |
2440 | } | |
2441 | ||
2442 | if (not_constant) | |
4bd908ff | 2443 | { |
fc386590 | 2444 | gfc_error ("Explicit shaped array with nonconstant bounds at %C"); |
2445 | m = MATCH_ERROR; | |
2446 | goto cleanup; | |
2447 | } | |
2448 | } | |
09ebadea | 2449 | if (as->type == AS_EXPLICIT) |
2450 | { | |
2451 | for (int i = 0; i < as->rank; i++) | |
2452 | { | |
2453 | gfc_expr *e, *n; | |
2454 | e = as->lower[i]; | |
2455 | if (e->expr_type != EXPR_CONSTANT) | |
2456 | { | |
2457 | n = gfc_copy_expr (e); | |
2458 | gfc_simplify_expr (n, 1); | |
2459 | if (n->expr_type == EXPR_CONSTANT) | |
2460 | gfc_replace_expr (e, n); | |
2461 | else | |
2462 | gfc_free_expr (n); | |
2463 | } | |
2464 | e = as->upper[i]; | |
2465 | if (e->expr_type != EXPR_CONSTANT) | |
2466 | { | |
2467 | n = gfc_copy_expr (e); | |
2468 | gfc_simplify_expr (n, 1); | |
2469 | if (n->expr_type == EXPR_CONSTANT) | |
2470 | gfc_replace_expr (e, n); | |
2471 | else | |
2472 | gfc_free_expr (n); | |
2473 | } | |
2474 | } | |
2475 | } | |
ae2864a8 | 2476 | } |
2477 | ||
4ee9c684 | 2478 | char_len = NULL; |
2479 | cl = NULL; | |
3e715c81 | 2480 | cl_deferred = false; |
4ee9c684 | 2481 | |
2482 | if (current_ts.type == BT_CHARACTER) | |
2483 | { | |
926b8757 | 2484 | switch (match_char_length (&char_len, &cl_deferred, false)) |
4ee9c684 | 2485 | { |
2486 | case MATCH_YES: | |
d270ce52 | 2487 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
4ee9c684 | 2488 | |
2489 | cl->length = char_len; | |
2490 | break; | |
2491 | ||
3923b69f | 2492 | /* Non-constant lengths need to be copied after the first |
04b61f60 | 2493 | element. Also copy assumed lengths. */ |
4ee9c684 | 2494 | case MATCH_NO: |
04b61f60 | 2495 | if (elem > 1 |
eeebe20b | 2496 | && (current_ts.u.cl->length == NULL |
2497 | || current_ts.u.cl->length->expr_type != EXPR_CONSTANT)) | |
3923b69f | 2498 | { |
d270ce52 | 2499 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
eeebe20b | 2500 | cl->length = gfc_copy_expr (current_ts.u.cl->length); |
3923b69f | 2501 | } |
2502 | else | |
eeebe20b | 2503 | cl = current_ts.u.cl; |
3923b69f | 2504 | |
3e715c81 | 2505 | cl_deferred = current_ts.deferred; |
2506 | ||
4ee9c684 | 2507 | break; |
2508 | ||
2509 | case MATCH_ERROR: | |
2510 | goto cleanup; | |
2511 | } | |
2512 | } | |
2513 | ||
4b8eb6ca | 2514 | /* The dummy arguments and result of the abreviated form of MODULE |
2515 | PROCEDUREs, used in SUBMODULES should not be redefined. */ | |
2516 | if (gfc_current_ns->proc_name | |
2517 | && gfc_current_ns->proc_name->abr_modproc_decl) | |
2518 | { | |
2519 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2520 | if (sym != NULL && (sym->attr.dummy || sym->attr.result)) | |
2521 | { | |
2522 | m = MATCH_ERROR; | |
2f7de6c1 | 2523 | gfc_error ("%qs at %C is a redefinition of the declaration " |
4b8eb6ca | 2524 | "in the corresponding interface for MODULE " |
2f7de6c1 | 2525 | "PROCEDURE %qs", sym->name, |
4b8eb6ca | 2526 | gfc_current_ns->proc_name->name); |
2527 | goto cleanup; | |
2528 | } | |
2529 | } | |
2530 | ||
8ef2cf76 | 2531 | /* %FILL components may not have initializers. */ |
ea9e8242 | 2532 | if (gfc_str_startswith (name, "%FILL") && gfc_match_eos () != MATCH_YES) |
8ef2cf76 | 2533 | { |
2534 | gfc_error ("%qs entity cannot have an initializer at %C", "%FILL"); | |
2535 | m = MATCH_ERROR; | |
2536 | goto cleanup; | |
2537 | } | |
2538 | ||
b549d2a5 | 2539 | /* If this symbol has already shown up in a Cray Pointer declaration, |
322680b5 | 2540 | and this is not a component declaration, |
f6d0e37a | 2541 | then we want to set the type & bail out. */ |
d7cd448a | 2542 | if (flag_cray_pointer && !gfc_comp_struct (gfc_current_state ())) |
b549d2a5 | 2543 | { |
2544 | gfc_find_symbol (name, gfc_current_ns, 1, &sym); | |
2545 | if (sym != NULL && sym->attr.cray_pointee) | |
2546 | { | |
b549d2a5 | 2547 | m = MATCH_YES; |
4bd908ff | 2548 | if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
2549 | { | |
2550 | m = MATCH_ERROR; | |
2551 | goto cleanup; | |
2552 | } | |
8db94b3b | 2553 | |
b549d2a5 | 2554 | /* Check to see if we have an array specification. */ |
2555 | if (cp_as != NULL) | |
2556 | { | |
2557 | if (sym->as != NULL) | |
2558 | { | |
7698a624 | 2559 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
b549d2a5 | 2560 | gfc_free_array_spec (cp_as); |
2561 | m = MATCH_ERROR; | |
2562 | goto cleanup; | |
2563 | } | |
2564 | else | |
2565 | { | |
60e19868 | 2566 | if (!gfc_set_array_spec (sym, cp_as, &var_locus)) |
b549d2a5 | 2567 | gfc_internal_error ("Couldn't set pointee array spec."); |
e14bee04 | 2568 | |
b549d2a5 | 2569 | /* Fix the array spec. */ |
e14bee04 | 2570 | m = gfc_mod_pointee_as (sym->as); |
b549d2a5 | 2571 | if (m == MATCH_ERROR) |
2572 | goto cleanup; | |
2573 | } | |
e14bee04 | 2574 | } |
b549d2a5 | 2575 | goto cleanup; |
2576 | } | |
2577 | else | |
2578 | { | |
2579 | gfc_free_array_spec (cp_as); | |
2580 | } | |
2581 | } | |
e14bee04 | 2582 | |
1e057e9b | 2583 | /* Procedure pointer as function result. */ |
2584 | if (gfc_current_state () == COMP_FUNCTION | |
2585 | && strcmp ("ppr@", gfc_current_block ()->name) == 0 | |
2586 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) == 0) | |
2587 | strcpy (name, "ppr@"); | |
2588 | ||
2589 | if (gfc_current_state () == COMP_FUNCTION | |
2590 | && strcmp (name, gfc_current_block ()->name) == 0 | |
2591 | && gfc_current_block ()->result | |
2592 | && strcmp ("ppr@", gfc_current_block ()->result->name) == 0) | |
2593 | strcpy (name, "ppr@"); | |
e14bee04 | 2594 | |
4ee9c684 | 2595 | /* OK, we've successfully matched the declaration. Now put the |
2596 | symbol in the current namespace, because it might be used in the | |
fe06c0d5 | 2597 | optional initialization expression for this symbol, e.g. this is |
4ee9c684 | 2598 | perfectly legal: |
2599 | ||
2600 | integer, parameter :: i = huge(i) | |
2601 | ||
2602 | This is only true for parameters or variables of a basic type. | |
2603 | For components of derived types, it is not true, so we don't | |
2604 | create a symbol for those yet. If we fail to create the symbol, | |
2605 | bail out. */ | |
d7cd448a | 2606 | if (!gfc_comp_struct (gfc_current_state ()) |
60e19868 | 2607 | && !build_sym (name, cl, cl_deferred, &as, &var_locus)) |
4ee9c684 | 2608 | { |
b8a51d79 | 2609 | m = MATCH_ERROR; |
2610 | goto cleanup; | |
2611 | } | |
2612 | ||
60e19868 | 2613 | if (!check_function_name (name)) |
4ee9c684 | 2614 | { |
4ee9c684 | 2615 | m = MATCH_ERROR; |
2616 | goto cleanup; | |
2617 | } | |
2618 | ||
b4f45d02 | 2619 | /* We allow old-style initializations of the form |
2620 | integer i /2/, j(4) /3*3, 1/ | |
2621 | (if no colon has been seen). These are different from data | |
2622 | statements in that initializers are only allowed to apply to the | |
2623 | variable immediately preceding, i.e. | |
2624 | integer i, j /1, 2/ | |
2625 | is not allowed. Therefore we have to do some work manually, that | |
cca3db55 | 2626 | could otherwise be left to the matchers for DATA statements. */ |
b4f45d02 | 2627 | |
2628 | if (!colon_seen && gfc_match (" /") == MATCH_YES) | |
2629 | { | |
60e19868 | 2630 | if (!gfc_notify_std (GFC_STD_GNU, "Old-style " |
2631 | "initialization at %C")) | |
b4f45d02 | 2632 | return MATCH_ERROR; |
d7cd448a | 2633 | |
2634 | /* Allow old style initializations for components of STRUCTUREs and MAPs | |
2635 | but not components of derived types. */ | |
d57a1422 | 2636 | else if (gfc_current_state () == COMP_DERIVED) |
2637 | { | |
2638 | gfc_error ("Invalid old style initialization for derived type " | |
2639 | "component at %C"); | |
2640 | m = MATCH_ERROR; | |
2641 | goto cleanup; | |
2642 | } | |
8db94b3b | 2643 | |
d7cd448a | 2644 | /* For structure components, read the initializer as a special |
2645 | expression and let the rest of this function apply the initializer | |
2646 | as usual. */ | |
2647 | else if (gfc_comp_struct (gfc_current_state ())) | |
2648 | { | |
2649 | m = match_clist_expr (&initializer, ¤t_ts, as); | |
2650 | if (m == MATCH_NO) | |
2651 | gfc_error ("Syntax error in old style initialization of %s at %C", | |
2652 | name); | |
2653 | if (m != MATCH_YES) | |
2654 | goto cleanup; | |
2655 | } | |
2656 | ||
2657 | /* Otherwise we treat the old style initialization just like a | |
2658 | DATA declaration for the current variable. */ | |
2659 | else | |
2660 | return match_old_style_init (name); | |
b4f45d02 | 2661 | } |
2662 | ||
4ee9c684 | 2663 | /* The double colon must be present in order to have initializers. |
2664 | Otherwise the statement is ambiguous with an assignment statement. */ | |
2665 | if (colon_seen) | |
2666 | { | |
2667 | if (gfc_match (" =>") == MATCH_YES) | |
2668 | { | |
4ee9c684 | 2669 | if (!current_attr.pointer) |
2670 | { | |
2671 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
2672 | m = MATCH_ERROR; | |
2673 | goto cleanup; | |
2674 | } | |
2675 | ||
23d075f4 | 2676 | m = match_pointer_init (&initializer, 0); |
4ee9c684 | 2677 | if (m != MATCH_YES) |
2678 | goto cleanup; | |
4ee9c684 | 2679 | } |
2680 | else if (gfc_match_char ('=') == MATCH_YES) | |
2681 | { | |
2682 | if (current_attr.pointer) | |
2683 | { | |
0d2b3c9c | 2684 | gfc_error ("Pointer initialization at %C requires %<=>%>, " |
2685 | "not %<=%>"); | |
4ee9c684 | 2686 | m = MATCH_ERROR; |
2687 | goto cleanup; | |
2688 | } | |
2689 | ||
2690 | m = gfc_match_init_expr (&initializer); | |
2691 | if (m == MATCH_NO) | |
2692 | { | |
2693 | gfc_error ("Expected an initialization expression at %C"); | |
2694 | m = MATCH_ERROR; | |
2695 | } | |
2696 | ||
b3a420c5 | 2697 | if (current_attr.flavor != FL_PARAMETER && gfc_pure (NULL) |
d7cd448a | 2698 | && !gfc_comp_struct (gfc_state_stack->state)) |
4ee9c684 | 2699 | { |
1a9745d2 | 2700 | gfc_error ("Initialization of variable at %C is not allowed in " |
2701 | "a PURE procedure"); | |
4ee9c684 | 2702 | m = MATCH_ERROR; |
2703 | } | |
2704 | ||
c77badf3 | 2705 | if (current_attr.flavor != FL_PARAMETER |
d7cd448a | 2706 | && !gfc_comp_struct (gfc_state_stack->state)) |
c77badf3 | 2707 | gfc_unset_implicit_pure (gfc_current_ns->proc_name); |
2708 | ||
4ee9c684 | 2709 | if (m != MATCH_YES) |
2710 | goto cleanup; | |
2711 | } | |
8ffad0f9 | 2712 | } |
2713 | ||
2294b616 | 2714 | if (initializer != NULL && current_attr.allocatable |
d7cd448a | 2715 | && gfc_comp_struct (gfc_current_state ())) |
2294b616 | 2716 | { |
1a9745d2 | 2717 | gfc_error ("Initialization of allocatable component at %C is not " |
2718 | "allowed"); | |
2294b616 | 2719 | m = MATCH_ERROR; |
2720 | goto cleanup; | |
2721 | } | |
2722 | ||
87a0366f | 2723 | if (gfc_current_state () == COMP_DERIVED |
2724 | && gfc_current_block ()->attr.pdt_template) | |
2725 | { | |
2726 | gfc_symbol *param; | |
2727 | gfc_find_symbol (name, gfc_current_block ()->f2k_derived, | |
2728 | 0, ¶m); | |
2729 | if (!param && (current_attr.pdt_kind || current_attr.pdt_len)) | |
2730 | { | |
2731 | gfc_error ("The component with KIND or LEN attribute at %C does not " | |
2732 | "not appear in the type parameter list at %L", | |
2733 | &gfc_current_block ()->declared_at); | |
2734 | m = MATCH_ERROR; | |
2735 | goto cleanup; | |
2736 | } | |
2737 | else if (param && !(current_attr.pdt_kind || current_attr.pdt_len)) | |
2738 | { | |
2739 | gfc_error ("The component at %C that appears in the type parameter " | |
2740 | "list at %L has neither the KIND nor LEN attribute", | |
2741 | &gfc_current_block ()->declared_at); | |
2742 | m = MATCH_ERROR; | |
2743 | goto cleanup; | |
2744 | } | |
2745 | else if (as && (current_attr.pdt_kind || current_attr.pdt_len)) | |
2746 | { | |
2747 | gfc_error ("The component at %C which is a type parameter must be " | |
2748 | "a scalar"); | |
2749 | m = MATCH_ERROR; | |
2750 | goto cleanup; | |
2751 | } | |
2752 | else if (param && initializer) | |
2753 | param->value = gfc_copy_expr (initializer); | |
2754 | } | |
2755 | ||
d9b3f26b | 2756 | /* Add the initializer. Note that it is fine if initializer is |
4ee9c684 | 2757 | NULL here, because we sometimes also need to check if a |
2758 | declaration *must* have an initialization expression. */ | |
d7cd448a | 2759 | if (!gfc_comp_struct (gfc_current_state ())) |
4ee9c684 | 2760 | t = add_init_expr_to_sym (name, &initializer, &var_locus); |
2761 | else | |
d9b3f26b | 2762 | { |
2294b616 | 2763 | if (current_ts.type == BT_DERIVED |
1a9745d2 | 2764 | && !current_attr.pointer && !initializer) |
d9b3f26b | 2765 | initializer = gfc_default_initializer (¤t_ts); |
2766 | t = build_struct (name, cl, &initializer, &as); | |
d7cd448a | 2767 | |
2768 | /* If we match a nested structure definition we expect to see the | |
2769 | * body even if the variable declarations blow up, so we need to keep | |
2770 | * the structure declaration around. */ | |
2771 | if (gfc_new_block && gfc_new_block->attr.flavor == FL_STRUCT) | |
2772 | gfc_commit_symbol (gfc_new_block); | |
d9b3f26b | 2773 | } |
4ee9c684 | 2774 | |
60e19868 | 2775 | m = (t) ? MATCH_YES : MATCH_ERROR; |
4ee9c684 | 2776 | |
2777 | cleanup: | |
2778 | /* Free stuff up and return. */ | |
2779 | gfc_free_expr (initializer); | |
2780 | gfc_free_array_spec (as); | |
2781 | ||
2782 | return m; | |
2783 | } | |
2784 | ||
2785 | ||
d10f89ee | 2786 | /* Match an extended-f77 "TYPESPEC*bytesize"-style kind specification. |
2787 | This assumes that the byte size is equal to the kind number for | |
2788 | non-COMPLEX types, and equal to twice the kind number for COMPLEX. */ | |
4ee9c684 | 2789 | |
2790 | match | |
1a9745d2 | 2791 | gfc_match_old_kind_spec (gfc_typespec *ts) |
4ee9c684 | 2792 | { |
2793 | match m; | |
3bd3b616 | 2794 | int original_kind; |
4ee9c684 | 2795 | |
2796 | if (gfc_match_char ('*') != MATCH_YES) | |
2797 | return MATCH_NO; | |
2798 | ||
3bd3b616 | 2799 | m = gfc_match_small_literal_int (&ts->kind, NULL); |
4ee9c684 | 2800 | if (m != MATCH_YES) |
2801 | return MATCH_ERROR; | |
2802 | ||
b118a35b | 2803 | original_kind = ts->kind; |
2804 | ||
4ee9c684 | 2805 | /* Massage the kind numbers for complex types. */ |
b118a35b | 2806 | if (ts->type == BT_COMPLEX) |
2807 | { | |
2808 | if (ts->kind % 2) | |
1a9745d2 | 2809 | { |
2810 | gfc_error ("Old-style type declaration %s*%d not supported at %C", | |
2811 | gfc_basic_typename (ts->type), original_kind); | |
2812 | return MATCH_ERROR; | |
2813 | } | |
b118a35b | 2814 | ts->kind /= 2; |
2d76519f | 2815 | |
2816 | } | |
2817 | ||
eb106faf | 2818 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
2d76519f | 2819 | ts->kind = 8; |
2820 | ||
2821 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
2822 | { | |
2823 | if (ts->kind == 4) | |
2824 | { | |
eb106faf | 2825 | if (flag_real4_kind == 8) |
2d76519f | 2826 | ts->kind = 8; |
eb106faf | 2827 | if (flag_real4_kind == 10) |
2d76519f | 2828 | ts->kind = 10; |
eb106faf | 2829 | if (flag_real4_kind == 16) |
2d76519f | 2830 | ts->kind = 16; |
2831 | } | |
2832 | ||
2833 | if (ts->kind == 8) | |
2834 | { | |
eb106faf | 2835 | if (flag_real8_kind == 4) |
2d76519f | 2836 | ts->kind = 4; |
eb106faf | 2837 | if (flag_real8_kind == 10) |
2d76519f | 2838 | ts->kind = 10; |
eb106faf | 2839 | if (flag_real8_kind == 16) |
2d76519f | 2840 | ts->kind = 16; |
2841 | } | |
b118a35b | 2842 | } |
4ee9c684 | 2843 | |
f2d4ef3b | 2844 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
4ee9c684 | 2845 | { |
b118a35b | 2846 | gfc_error ("Old-style type declaration %s*%d not supported at %C", |
1a9745d2 | 2847 | gfc_basic_typename (ts->type), original_kind); |
4ee9c684 | 2848 | return MATCH_ERROR; |
2849 | } | |
2850 | ||
76e207a9 | 2851 | if (!gfc_notify_std (GFC_STD_GNU, |
2852 | "Nonstandard type declaration %s*%d at %C", | |
60e19868 | 2853 | gfc_basic_typename(ts->type), original_kind)) |
be7f01a1 | 2854 | return MATCH_ERROR; |
2855 | ||
4ee9c684 | 2856 | return MATCH_YES; |
2857 | } | |
2858 | ||
2859 | ||
2860 | /* Match a kind specification. Since kinds are generally optional, we | |
2861 | usually return MATCH_NO if something goes wrong. If a "kind=" | |
2862 | string is found, then we know we have an error. */ | |
2863 | ||
2864 | match | |
67a51c8e | 2865 | gfc_match_kind_spec (gfc_typespec *ts, bool kind_expr_only) |
4ee9c684 | 2866 | { |
67a51c8e | 2867 | locus where, loc; |
4ee9c684 | 2868 | gfc_expr *e; |
2869 | match m, n; | |
c632ff3d | 2870 | char c; |
4ee9c684 | 2871 | |
2872 | m = MATCH_NO; | |
67a51c8e | 2873 | n = MATCH_YES; |
4ee9c684 | 2874 | e = NULL; |
9d958d5b | 2875 | saved_kind_expr = NULL; |
4ee9c684 | 2876 | |
67a51c8e | 2877 | where = loc = gfc_current_locus; |
2878 | ||
2879 | if (kind_expr_only) | |
2880 | goto kind_expr; | |
4ee9c684 | 2881 | |
2882 | if (gfc_match_char ('(') == MATCH_NO) | |
2883 | return MATCH_NO; | |
2884 | ||
2885 | /* Also gobbles optional text. */ | |
2886 | if (gfc_match (" kind = ") == MATCH_YES) | |
2887 | m = MATCH_ERROR; | |
2888 | ||
67a51c8e | 2889 | loc = gfc_current_locus; |
2890 | ||
2891 | kind_expr: | |
9d958d5b | 2892 | |
4ee9c684 | 2893 | n = gfc_match_init_expr (&e); |
67a51c8e | 2894 | |
9d958d5b | 2895 | if (gfc_derived_parameter_expr (e)) |
2896 | { | |
2897 | ts->kind = 0; | |
2898 | saved_kind_expr = gfc_copy_expr (e); | |
2899 | goto close_brackets; | |
2900 | } | |
2901 | ||
4ee9c684 | 2902 | if (n != MATCH_YES) |
67a51c8e | 2903 | { |
077932f9 | 2904 | if (gfc_matching_function) |
67a51c8e | 2905 | { |
8db94b3b | 2906 | /* The function kind expression might include use associated or |
077932f9 | 2907 | imported parameters and try again after the specification |
2908 | expressions..... */ | |
67a51c8e | 2909 | if (gfc_match_char (')') != MATCH_YES) |
2910 | { | |
2911 | gfc_error ("Missing right parenthesis at %C"); | |
2912 | m = MATCH_ERROR; | |
2913 | goto no_match; | |
2914 | } | |
2915 | ||
2916 | gfc_free_expr (e); | |
67a51c8e | 2917 | gfc_undo_symbols (); |
2918 | return MATCH_YES; | |
2919 | } | |
2920 | else | |
2921 | { | |
2922 | /* ....or else, the match is real. */ | |
2923 | if (n == MATCH_NO) | |
2924 | gfc_error ("Expected initialization expression at %C"); | |
2925 | if (n != MATCH_YES) | |
2926 | return MATCH_ERROR; | |
2927 | } | |
2928 | } | |
4ee9c684 | 2929 | |
2930 | if (e->rank != 0) | |
2931 | { | |
2932 | gfc_error ("Expected scalar initialization expression at %C"); | |
2933 | m = MATCH_ERROR; | |
2934 | goto no_match; | |
2935 | } | |
2936 | ||
dc326dc0 | 2937 | if (gfc_extract_int (e, &ts->kind, 1)) |
4ee9c684 | 2938 | { |
4ee9c684 | 2939 | m = MATCH_ERROR; |
2940 | goto no_match; | |
2941 | } | |
2942 | ||
c5d33754 | 2943 | /* Before throwing away the expression, let's see if we had a |
2944 | C interoperable kind (and store the fact). */ | |
2945 | if (e->ts.is_c_interop == 1) | |
2946 | { | |
df084314 | 2947 | /* Mark this as C interoperable if being declared with one |
c5d33754 | 2948 | of the named constants from iso_c_binding. */ |
2949 | ts->is_c_interop = e->ts.is_iso_c; | |
2950 | ts->f90_type = e->ts.f90_type; | |
41084313 | 2951 | if (e->symtree) |
2952 | ts->interop_kind = e->symtree->n.sym; | |
c5d33754 | 2953 | } |
8db94b3b | 2954 | |
4ee9c684 | 2955 | gfc_free_expr (e); |
2956 | e = NULL; | |
2957 | ||
c5d33754 | 2958 | /* Ignore errors to this point, if we've gotten here. This means |
2959 | we ignore the m=MATCH_ERROR from above. */ | |
f2d4ef3b | 2960 | if (gfc_validate_kind (ts->type, ts->kind, true) < 0) |
4ee9c684 | 2961 | { |
2962 | gfc_error ("Kind %d not supported for type %s at %C", ts->kind, | |
2963 | gfc_basic_typename (ts->type)); | |
c632ff3d | 2964 | gfc_current_locus = where; |
2965 | return MATCH_ERROR; | |
4ee9c684 | 2966 | } |
c632ff3d | 2967 | |
209d3778 | 2968 | /* Warn if, e.g., c_int is used for a REAL variable, but not |
2969 | if, e.g., c_double is used for COMPLEX as the standard | |
2970 | explicitly says that the kind type parameter for complex and real | |
2971 | variable is the same, i.e. c_float == c_float_complex. */ | |
2972 | if (ts->f90_type != BT_UNKNOWN && ts->f90_type != ts->type | |
2973 | && !((ts->f90_type == BT_REAL && ts->type == BT_COMPLEX) | |
2974 | || (ts->f90_type == BT_COMPLEX && ts->type == BT_REAL))) | |
6f521718 | 2975 | gfc_warning_now (0, "C kind type parameter is for type %s but type at %L " |
ded233a6 | 2976 | "is %s", gfc_basic_typename (ts->f90_type), &where, |
2977 | gfc_basic_typename (ts->type)); | |
209d3778 | 2978 | |
9d958d5b | 2979 | close_brackets: |
2980 | ||
c632ff3d | 2981 | gfc_gobble_whitespace (); |
e0be6f02 | 2982 | if ((c = gfc_next_ascii_char ()) != ')' |
2983 | && (ts->type != BT_CHARACTER || c != ',')) | |
4ee9c684 | 2984 | { |
c632ff3d | 2985 | if (ts->type == BT_CHARACTER) |
2986 | gfc_error ("Missing right parenthesis or comma at %C"); | |
2987 | else | |
2988 | gfc_error ("Missing right parenthesis at %C"); | |
67a51c8e | 2989 | m = MATCH_ERROR; |
4ee9c684 | 2990 | } |
c5d33754 | 2991 | else |
2992 | /* All tests passed. */ | |
2993 | m = MATCH_YES; | |
4ee9c684 | 2994 | |
c5d33754 | 2995 | if(m == MATCH_ERROR) |
2996 | gfc_current_locus = where; | |
2d76519f | 2997 | |
eb106faf | 2998 | if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8) |
2d76519f | 2999 | ts->kind = 8; |
3000 | ||
3001 | if (ts->type == BT_REAL || ts->type == BT_COMPLEX) | |
3002 | { | |
3003 | if (ts->kind == 4) | |
3004 | { | |
eb106faf | 3005 | if (flag_real4_kind == 8) |
2d76519f | 3006 | ts->kind = 8; |
eb106faf | 3007 | if (flag_real4_kind == 10) |
2d76519f | 3008 | ts->kind = 10; |
eb106faf | 3009 | if (flag_real4_kind == 16) |
2d76519f | 3010 | ts->kind = 16; |
3011 | } | |
3012 | ||
3013 | if (ts->kind == 8) | |
3014 | { | |
eb106faf | 3015 | if (flag_real8_kind == 4) |
2d76519f | 3016 | ts->kind = 4; |
eb106faf | 3017 | if (flag_real8_kind == 10) |
2d76519f | 3018 | ts->kind = 10; |
eb106faf | 3019 | if (flag_real8_kind == 16) |
2d76519f | 3020 | ts->kind = 16; |
3021 | } | |
3022 | } | |
3023 | ||
c5d33754 | 3024 | /* Return what we know from the test(s). */ |
3025 | return m; | |
4ee9c684 | 3026 | |
3027 | no_match: | |
3028 | gfc_free_expr (e); | |
cbb9e6aa | 3029 | gfc_current_locus = where; |
4ee9c684 | 3030 | return m; |
3031 | } | |
3032 | ||
3033 | ||
33399208 | 3034 | static match |
3035 | match_char_kind (int * kind, int * is_iso_c) | |
3036 | { | |
3037 | locus where; | |
3038 | gfc_expr *e; | |
3039 | match m, n; | |
dc326dc0 | 3040 | bool fail; |
33399208 | 3041 | |
3042 | m = MATCH_NO; | |
3043 | e = NULL; | |
3044 | where = gfc_current_locus; | |
3045 | ||
3046 | n = gfc_match_init_expr (&e); | |
c632ff3d | 3047 | |
077932f9 | 3048 | if (n != MATCH_YES && gfc_matching_function) |
c632ff3d | 3049 | { |
077932f9 | 3050 | /* The expression might include use-associated or imported |
8db94b3b | 3051 | parameters and try again after the specification |
077932f9 | 3052 | expressions. */ |
c632ff3d | 3053 | gfc_free_expr (e); |
c632ff3d | 3054 | gfc_undo_symbols (); |
3055 | return MATCH_YES; | |
3056 | } | |
3057 | ||
33399208 | 3058 | if (n == MATCH_NO) |
3059 | gfc_error ("Expected initialization expression at %C"); | |
3060 | if (n != MATCH_YES) | |
3061 | return MATCH_ERROR; | |
3062 | ||
3063 | if (e->rank != 0) | |
3064 | { | |
3065 | gfc_error ("Expected scalar initialization expression at %C"); | |
3066 | m = MATCH_ERROR; | |
3067 | goto no_match; | |
3068 | } | |
3069 | ||
9f96fdfe | 3070 | if (gfc_derived_parameter_expr (e)) |
3071 | { | |
3072 | saved_kind_expr = e; | |
3073 | *kind = 0; | |
3074 | return MATCH_YES; | |
3075 | } | |
3076 | ||
dc326dc0 | 3077 | fail = gfc_extract_int (e, kind, 1); |
33399208 | 3078 | *is_iso_c = e->ts.is_iso_c; |
dc326dc0 | 3079 | if (fail) |
33399208 | 3080 | { |
33399208 | 3081 | m = MATCH_ERROR; |
3082 | goto no_match; | |
3083 | } | |
3084 | ||
3085 | gfc_free_expr (e); | |
3086 | ||
3087 | /* Ignore errors to this point, if we've gotten here. This means | |
3088 | we ignore the m=MATCH_ERROR from above. */ | |
3089 | if (gfc_validate_kind (BT_CHARACTER, *kind, true) < 0) | |
3090 | { | |
3091 | gfc_error ("Kind %d is not supported for CHARACTER at %C", *kind); | |
3092 | m = MATCH_ERROR; | |
3093 | } | |
3094 | else | |
3095 | /* All tests passed. */ | |
3096 | m = MATCH_YES; | |
3097 | ||
3098 | if (m == MATCH_ERROR) | |
3099 | gfc_current_locus = where; | |
8db94b3b | 3100 | |
33399208 | 3101 | /* Return what we know from the test(s). */ |
3102 | return m; | |
3103 | ||
3104 | no_match: | |
3105 | gfc_free_expr (e); | |
3106 | gfc_current_locus = where; | |
3107 | return m; | |
3108 | } | |
3109 | ||
10f5dcc0 | 3110 | |
4ee9c684 | 3111 | /* Match the various kind/length specifications in a CHARACTER |
3112 | declaration. We don't return MATCH_NO. */ | |
3113 | ||
10f5dcc0 | 3114 | match |
3115 | gfc_match_char_spec (gfc_typespec *ts) | |
4ee9c684 | 3116 | { |
33399208 | 3117 | int kind, seen_length, is_iso_c; |
4ee9c684 | 3118 | gfc_charlen *cl; |
3119 | gfc_expr *len; | |
3120 | match m; | |
3e715c81 | 3121 | bool deferred; |
33399208 | 3122 | |
4ee9c684 | 3123 | len = NULL; |
3124 | seen_length = 0; | |
33399208 | 3125 | kind = 0; |
3126 | is_iso_c = 0; | |
3e715c81 | 3127 | deferred = false; |
4ee9c684 | 3128 | |
3129 | /* Try the old-style specification first. */ | |
3130 | old_char_selector = 0; | |
3131 | ||
926b8757 | 3132 | m = match_char_length (&len, &deferred, true); |
4ee9c684 | 3133 | if (m != MATCH_NO) |
3134 | { | |
3135 | if (m == MATCH_YES) | |
3136 | old_char_selector = 1; | |
3137 | seen_length = 1; | |
3138 | goto done; | |
3139 | } | |
3140 | ||
3141 | m = gfc_match_char ('('); | |
3142 | if (m != MATCH_YES) | |
3143 | { | |
c5d33754 | 3144 | m = MATCH_YES; /* Character without length is a single char. */ |
4ee9c684 | 3145 | goto done; |
3146 | } | |
3147 | ||
c5d33754 | 3148 | /* Try the weird case: ( KIND = <int> [ , LEN = <len-param> ] ). */ |
4ee9c684 | 3149 | if (gfc_match (" kind =") == MATCH_YES) |
3150 | { | |
33399208 | 3151 | m = match_char_kind (&kind, &is_iso_c); |
8db94b3b | 3152 | |
4ee9c684 | 3153 | if (m == MATCH_ERROR) |
3154 | goto done; | |
3155 | if (m == MATCH_NO) | |
3156 | goto syntax; | |
3157 | ||
3158 | if (gfc_match (" , len =") == MATCH_NO) | |
3159 | goto rparen; | |
3160 | ||
3e715c81 | 3161 | m = char_len_param_value (&len, &deferred); |
4ee9c684 | 3162 | if (m == MATCH_NO) |
3163 | goto syntax; | |
3164 | if (m == MATCH_ERROR) | |
3165 | goto done; | |
3166 | seen_length = 1; | |
3167 | ||
3168 | goto rparen; | |
3169 | } | |
3170 | ||
f6d0e37a | 3171 | /* Try to match "LEN = <len-param>" or "LEN = <len-param>, KIND = <int>". */ |
4ee9c684 | 3172 | if (gfc_match (" len =") == MATCH_YES) |
3173 | { | |
3e715c81 | 3174 | m = char_len_param_value (&len, &deferred); |
4ee9c684 | 3175 | if (m == MATCH_NO) |
3176 | goto syntax; | |
3177 | if (m == MATCH_ERROR) | |
3178 | goto done; | |
3179 | seen_length = 1; | |
3180 | ||
3181 | if (gfc_match_char (')') == MATCH_YES) | |
3182 | goto done; | |
3183 | ||
3184 | if (gfc_match (" , kind =") != MATCH_YES) | |
3185 | goto syntax; | |
3186 | ||
33399208 | 3187 | if (match_char_kind (&kind, &is_iso_c) == MATCH_ERROR) |
3188 | goto done; | |
4ee9c684 | 3189 | |
3190 | goto rparen; | |
3191 | } | |
3192 | ||
f6d0e37a | 3193 | /* Try to match ( <len-param> ) or ( <len-param> , [ KIND = ] <int> ). */ |
3e715c81 | 3194 | m = char_len_param_value (&len, &deferred); |
4ee9c684 | 3195 | if (m == MATCH_NO) |
3196 | goto syntax; | |
3197 | if (m == MATCH_ERROR) | |
3198 | goto done; | |
3199 | seen_length = 1; | |
3200 | ||
3201 | m = gfc_match_char (')'); | |
3202 | if (m == MATCH_YES) | |
3203 | goto done; | |
3204 | ||
3205 | if (gfc_match_char (',') != MATCH_YES) | |
3206 | goto syntax; | |
3207 | ||
c5d33754 | 3208 | gfc_match (" kind ="); /* Gobble optional text. */ |
4ee9c684 | 3209 | |
33399208 | 3210 | m = match_char_kind (&kind, &is_iso_c); |
4ee9c684 | 3211 | if (m == MATCH_ERROR) |
3212 | goto done; | |
3213 | if (m == MATCH_NO) | |
3214 | goto syntax; | |
3215 | ||
3216 | rparen: | |
3217 | /* Require a right-paren at this point. */ | |
3218 | m = gfc_match_char (')'); | |
3219 | if (m == MATCH_YES) | |
3220 | goto done; | |
3221 | ||
3222 | syntax: | |
3223 | gfc_error ("Syntax error in CHARACTER declaration at %C"); | |
3224 | m = MATCH_ERROR; | |
a3cbe8cc | 3225 | gfc_free_expr (len); |
3226 | return m; | |
4ee9c684 | 3227 | |
3228 | done: | |
8d39570e | 3229 | /* Deal with character functions after USE and IMPORT statements. */ |
3230 | if (gfc_matching_function) | |
077932f9 | 3231 | { |
8d39570e | 3232 | gfc_free_expr (len); |
077932f9 | 3233 | gfc_undo_symbols (); |
3234 | return MATCH_YES; | |
3235 | } | |
3236 | ||
4ee9c684 | 3237 | if (m != MATCH_YES) |
3238 | { | |
3239 | gfc_free_expr (len); | |
3240 | return m; | |
3241 | } | |
3242 | ||
3243 | /* Do some final massaging of the length values. */ | |
d270ce52 | 3244 | cl = gfc_new_charlen (gfc_current_ns, NULL); |
4ee9c684 | 3245 | |
3246 | if (seen_length == 0) | |
9f4d9f83 | 3247 | cl->length = gfc_get_int_expr (gfc_charlen_int_kind, NULL, 1); |
4ee9c684 | 3248 | else |
91f09922 | 3249 | { |
5efb256e | 3250 | /* If gfortran ends up here, then len may be reducible to a constant. |
3251 | Try to do that here. If it does not reduce, simply assign len to | |
3252 | charlen. A complication occurs with user-defined generic functions, | |
3253 | which are not resolved. Use a private namespace to deal with | |
3254 | generic functions. */ | |
3255 | ||
91f09922 | 3256 | if (len && len->expr_type != EXPR_CONSTANT) |
3257 | { | |
5efb256e | 3258 | gfc_namespace *old_ns; |
91f09922 | 3259 | gfc_expr *e; |
5efb256e | 3260 | |
3261 | old_ns = gfc_current_ns; | |
3262 | gfc_current_ns = gfc_get_namespace (NULL, 0); | |
3263 | ||
91f09922 | 3264 | e = gfc_copy_expr (len); |
3265 | gfc_reduce_init_expr (e); | |
3266 | if (e->expr_type == EXPR_CONSTANT) | |
a3903232 | 3267 | { |
3268 | gfc_replace_expr (len, e); | |
3269 | if (mpz_cmp_si (len->value.integer, 0) < 0) | |
3270 | mpz_set_ui (len->value.integer, 0); | |
3271 | } | |
91f09922 | 3272 | else |
3273 | gfc_free_expr (e); | |
5efb256e | 3274 | |
3275 | gfc_free_namespace (gfc_current_ns); | |
3276 | gfc_current_ns = old_ns; | |
91f09922 | 3277 | } |
5efb256e | 3278 | |
3279 | cl->length = len; | |
91f09922 | 3280 | } |
4ee9c684 | 3281 | |
eeebe20b | 3282 | ts->u.cl = cl; |
33399208 | 3283 | ts->kind = kind == 0 ? gfc_default_character_kind : kind; |
3e715c81 | 3284 | ts->deferred = deferred; |
4ee9c684 | 3285 | |
df084314 | 3286 | /* We have to know if it was a C interoperable kind so we can |
c5d33754 | 3287 | do accurate type checking of bind(c) procs, etc. */ |
33399208 | 3288 | if (kind != 0) |
df084314 | 3289 | /* Mark this as C interoperable if being declared with one |
33399208 | 3290 | of the named constants from iso_c_binding. */ |
3291 | ts->is_c_interop = is_iso_c; | |
c5d33754 | 3292 | else if (len != NULL) |
33399208 | 3293 | /* Here, we might have parsed something such as: character(c_char) |
3294 | In this case, the parsing code above grabs the c_char when | |
3295 | looking for the length (line 1690, roughly). it's the last | |
3296 | testcase for parsing the kind params of a character variable. | |
3297 | However, it's not actually the length. this seems like it | |
8db94b3b | 3298 | could be an error. |
33399208 | 3299 | To see if the user used a C interop kind, test the expr |
3300 | of the so called length, and see if it's C interoperable. */ | |
3301 | ts->is_c_interop = len->ts.is_iso_c; | |
8db94b3b | 3302 | |
4ee9c684 | 3303 | return MATCH_YES; |
3304 | } | |
3305 | ||
3306 | ||
d7cd448a | 3307 | /* Matches a RECORD declaration. */ |
3308 | ||
3309 | static match | |
891196d7 | 3310 | match_record_decl (char *name) |
d7cd448a | 3311 | { |
3312 | locus old_loc; | |
3313 | old_loc = gfc_current_locus; | |
891196d7 | 3314 | match m; |
d7cd448a | 3315 | |
891196d7 | 3316 | m = gfc_match (" record /"); |
3317 | if (m == MATCH_YES) | |
d7cd448a | 3318 | { |
cf078427 | 3319 | if (!flag_dec_structure) |
d7cd448a | 3320 | { |
3321 | gfc_current_locus = old_loc; | |
3322 | gfc_error ("RECORD at %C is an extension, enable it with " | |
3323 | "-fdec-structure"); | |
3324 | return MATCH_ERROR; | |
3325 | } | |
891196d7 | 3326 | m = gfc_match (" %n/", name); |
3327 | if (m == MATCH_YES) | |
3328 | return MATCH_YES; | |
d7cd448a | 3329 | } |
3330 | ||
891196d7 | 3331 | gfc_current_locus = old_loc; |
cf078427 | 3332 | if (flag_dec_structure |
891196d7 | 3333 | && (gfc_match (" record% ") == MATCH_YES |
3334 | || gfc_match (" record%t") == MATCH_YES)) | |
3335 | gfc_error ("Structure name expected after RECORD at %C"); | |
3336 | if (m == MATCH_NO) | |
d7cd448a | 3337 | return MATCH_NO; |
891196d7 | 3338 | |
3339 | return MATCH_ERROR; | |
d7cd448a | 3340 | } |
3341 | ||
9d958d5b | 3342 | |
3343 | /* This function uses the gfc_actual_arglist 'type_param_spec_list' as a source | |
3344 | of expressions to substitute into the possibly parameterized expression | |
3345 | 'e'. Using a list is inefficient but should not be too bad since the | |
3346 | number of type parameters is not likely to be large. */ | |
3347 | static bool | |
3348 | insert_parameter_exprs (gfc_expr* e, gfc_symbol* sym ATTRIBUTE_UNUSED, | |
3349 | int* f) | |
3350 | { | |
3351 | gfc_actual_arglist *param; | |
3352 | gfc_expr *copy; | |
3353 | ||
3354 | if (e->expr_type != EXPR_VARIABLE) | |
3355 | return false; | |
3356 | ||
3357 | gcc_assert (e->symtree); | |
3358 | if (e->symtree->n.sym->attr.pdt_kind | |
3359 | || (*f != 0 && e->symtree->n.sym->attr.pdt_len)) | |
3360 | { | |
3361 | for (param = type_param_spec_list; param; param = param->next) | |
3362 | if (strcmp (e->symtree->n.sym->name, param->name) == 0) | |
3363 | break; | |
3364 | ||
3365 | if (param) | |
3366 | { | |
3367 | copy = gfc_copy_expr (param->expr); | |
3368 | *e = *copy; | |
3369 | free (copy); | |
3370 | } | |
3371 | } | |
3372 | ||
3373 | return false; | |
3374 | } | |
3375 | ||
3376 | ||
3377 | bool | |
3378 | gfc_insert_kind_parameter_exprs (gfc_expr *e) | |
3379 | { | |
3380 | return gfc_traverse_expr (e, NULL, &insert_parameter_exprs, 0); | |
3381 | } | |
3382 | ||
3383 | ||
3384 | bool | |
3385 | gfc_insert_parameter_exprs (gfc_expr *e, gfc_actual_arglist *param_list) | |
3386 | { | |
3387 | gfc_actual_arglist *old_param_spec_list = type_param_spec_list; | |
3388 | type_param_spec_list = param_list; | |
3389 | return gfc_traverse_expr (e, NULL, &insert_parameter_exprs, 1); | |
3390 | type_param_spec_list = NULL; | |
3391 | type_param_spec_list = old_param_spec_list; | |
3392 | } | |
3393 | ||
3394 | /* Determines the instance of a parameterized derived type to be used by | |
3395 | matching determining the values of the kind parameters and using them | |
3396 | in the name of the instance. If the instance exists, it is used, otherwise | |
3397 | a new derived type is created. */ | |
3398 | match | |
3399 | gfc_get_pdt_instance (gfc_actual_arglist *param_list, gfc_symbol **sym, | |
3400 | gfc_actual_arglist **ext_param_list) | |
3401 | { | |
3402 | /* The PDT template symbol. */ | |
3403 | gfc_symbol *pdt = *sym; | |
3404 | /* The symbol for the parameter in the template f2k_namespace. */ | |
3405 | gfc_symbol *param; | |
3406 | /* The hoped for instance of the PDT. */ | |
3407 | gfc_symbol *instance; | |
3408 | /* The list of parameters appearing in the PDT declaration. */ | |
3409 | gfc_formal_arglist *type_param_name_list; | |
3410 | /* Used to store the parameter specification list during recursive calls. */ | |
3411 | gfc_actual_arglist *old_param_spec_list; | |
3412 | /* Pointers to the parameter specification being used. */ | |
3413 | gfc_actual_arglist *actual_param; | |
3414 | gfc_actual_arglist *tail = NULL; | |
3415 | /* Used to build up the name of the PDT instance. The prefix uses 4 | |
3416 | characters and each KIND parameter 2 more. Allow 8 of the latter. */ | |
3417 | char name[GFC_MAX_SYMBOL_LEN + 21]; | |
3418 | ||
3419 | bool name_seen = (param_list == NULL); | |
3420 | bool assumed_seen = false; | |
3421 | bool deferred_seen = false; | |
3422 | bool spec_error = false; | |
3423 | int kind_value, i; | |
3424 | gfc_expr *kind_expr; | |
3425 | gfc_component *c1, *c2; | |
3426 | match m; | |
3427 | ||
3428 | type_param_spec_list = NULL; | |
3429 | ||
3430 | type_param_name_list = pdt->formal; | |
3431 | actual_param = param_list; | |
3432 | sprintf (name, "Pdt%s", pdt->name); | |
3433 | ||
3434 | /* Run through the parameter name list and pick up the actual | |
3435 | parameter values or use the default values in the PDT declaration. */ | |
3436 | for (; type_param_name_list; | |
3437 | type_param_name_list = type_param_name_list->next) | |
3438 | { | |
3439 | if (actual_param && actual_param->spec_type != SPEC_EXPLICIT) | |
3440 | { | |
3441 | if (actual_param->spec_type == SPEC_ASSUMED) | |
3442 | spec_error = deferred_seen; | |
3443 | else | |
3444 | spec_error = assumed_seen; | |
3445 | ||
3446 | if (spec_error) | |
3447 | { | |
3448 | gfc_error ("The type parameter spec list at %C cannot contain " | |
3449 | "both ASSUMED and DEFERRED parameters"); | |
87a0366f | 3450 | goto error_return; |
9d958d5b | 3451 | } |
3452 | } | |
3453 | ||
3454 | if (actual_param && actual_param->name) | |
3455 | name_seen = true; | |
3456 | param = type_param_name_list->sym; | |
3457 | ||
f0efd2e8 | 3458 | if (!param || !param->name) |
3459 | continue; | |
3460 | ||
87a0366f | 3461 | c1 = gfc_find_component (pdt, param->name, false, true, NULL); |
1148eb54 | 3462 | /* An error should already have been thrown in resolve.c |
3463 | (resolve_fl_derived0). */ | |
87a0366f | 3464 | if (!pdt->attr.use_assoc && !c1) |
1148eb54 | 3465 | goto error_return; |
87a0366f | 3466 | |
9d958d5b | 3467 | kind_expr = NULL; |
3468 | if (!name_seen) | |
3469 | { | |
87a0366f | 3470 | if (!actual_param && !(c1 && c1->initializer)) |
3471 | { | |
3472 | gfc_error ("The type parameter spec list at %C does not contain " | |
3473 | "enough parameter expressions"); | |
3474 | goto error_return; | |
3475 | } | |
3476 | else if (!actual_param && c1 && c1->initializer) | |
3477 | kind_expr = gfc_copy_expr (c1->initializer); | |
3478 | else if (actual_param && actual_param->spec_type == SPEC_EXPLICIT) | |
9d958d5b | 3479 | kind_expr = gfc_copy_expr (actual_param->expr); |
3480 | } | |
3481 | else | |
3482 | { | |
3483 | actual_param = param_list; | |
3484 | for (;actual_param; actual_param = actual_param->next) | |
3485 | if (actual_param->name | |
3486 | && strcmp (actual_param->name, param->name) == 0) | |
3487 | break; | |
3488 | if (actual_param && actual_param->spec_type == SPEC_EXPLICIT) | |
3489 | kind_expr = gfc_copy_expr (actual_param->expr); | |
3490 | else | |
3491 | { | |
dba5ed0d | 3492 | if (c1->initializer) |
3493 | kind_expr = gfc_copy_expr (c1->initializer); | |
9d958d5b | 3494 | else if (!(actual_param && param->attr.pdt_len)) |
3495 | { | |
4b8290f8 | 3496 | gfc_error ("The derived parameter %qs at %C does not " |
9d958d5b | 3497 | "have a default value", param->name); |
87a0366f | 3498 | goto error_return; |
9d958d5b | 3499 | } |
3500 | } | |
3501 | } | |
3502 | ||
3503 | /* Store the current parameter expressions in a temporary actual | |
3504 | arglist 'list' so that they can be substituted in the corresponding | |
3505 | expressions in the PDT instance. */ | |
3506 | if (type_param_spec_list == NULL) | |
3507 | { | |
3508 | type_param_spec_list = gfc_get_actual_arglist (); | |
3509 | tail = type_param_spec_list; | |
3510 | } | |
3511 | else | |
3512 | { | |
3513 | tail->next = gfc_get_actual_arglist (); | |
3514 | tail = tail->next; | |
3515 | } | |
3516 | tail->name = param->name; | |
3517 | ||
3518 | if (kind_expr) | |
3519 | { | |
9f96fdfe | 3520 | /* Try simplification even for LEN expressions. */ |
3521 | gfc_resolve_expr (kind_expr); | |
3522 | gfc_simplify_expr (kind_expr, 1); | |
87a0366f | 3523 | /* Variable expressions seem to default to BT_PROCEDURE. |
3524 | TODO find out why this is and fix it. */ | |
3525 | if (kind_expr->ts.type != BT_INTEGER | |
3526 | && kind_expr->ts.type != BT_PROCEDURE) | |
3527 | { | |
3528 | gfc_error ("The parameter expression at %C must be of " | |
3529 | "INTEGER type and not %s type", | |
3530 | gfc_basic_typename (kind_expr->ts.type)); | |
3531 | goto error_return; | |
3532 | } | |
3533 | ||
9d958d5b | 3534 | tail->expr = gfc_copy_expr (kind_expr); |
9d958d5b | 3535 | } |
3536 | ||
3537 | if (actual_param) | |
3538 | tail->spec_type = actual_param->spec_type; | |
3539 | ||
3540 | if (!param->attr.pdt_kind) | |
3541 | { | |
87a0366f | 3542 | if (!name_seen && actual_param) |
9d958d5b | 3543 | actual_param = actual_param->next; |
3544 | if (kind_expr) | |
3545 | { | |
3546 | gfc_free_expr (kind_expr); | |
3547 | kind_expr = NULL; | |
3548 | } | |
3549 | continue; | |
3550 | } | |
3551 | ||
3552 | if (actual_param | |
3553 | && (actual_param->spec_type == SPEC_ASSUMED | |
3554 | || actual_param->spec_type == SPEC_DEFERRED)) | |
3555 | { | |
4b8290f8 | 3556 | gfc_error ("The KIND parameter %qs at %C cannot either be " |
9d958d5b | 3557 | "ASSUMED or DEFERRED", param->name); |
87a0366f | 3558 | goto error_return; |
9d958d5b | 3559 | } |
3560 | ||
3561 | if (!kind_expr || !gfc_is_constant_expr (kind_expr)) | |
3562 | { | |
4b8290f8 | 3563 | gfc_error ("The value for the KIND parameter %qs at %C does not " |
9d958d5b | 3564 | "reduce to a constant expression", param->name); |
87a0366f | 3565 | goto error_return; |
9d958d5b | 3566 | } |
3567 | ||
3568 | gfc_extract_int (kind_expr, &kind_value); | |
e9366ef9 | 3569 | sprintf (name + strlen (name), "_%d", kind_value); |
9d958d5b | 3570 | |
3571 | if (!name_seen && actual_param) | |
3572 | actual_param = actual_param->next; | |
3573 | gfc_free_expr (kind_expr); | |
3574 | } | |
3575 | ||
87a0366f | 3576 | if (!name_seen && actual_param) |
3577 | { | |
3578 | gfc_error ("The type parameter spec list at %C contains too many " | |
3579 | "parameter expressions"); | |
3580 | goto error_return; | |
3581 | } | |
3582 | ||
9d958d5b | 3583 | /* Now we search for the PDT instance 'name'. If it doesn't exist, we |
3584 | build it, using 'pdt' as a template. */ | |
3585 | if (gfc_get_symbol (name, pdt->ns, &instance)) | |
3586 | { | |
3587 | gfc_error ("Parameterized derived type at %C is ambiguous"); | |
87a0366f | 3588 | goto error_return; |
9d958d5b | 3589 | } |
3590 | ||
3591 | m = MATCH_YES; | |
3592 | ||
3593 | if (instance->attr.flavor == FL_DERIVED | |
3594 | && instance->attr.pdt_type) | |
3595 | { | |
3596 | instance->refs++; | |
3597 | if (ext_param_list) | |
3598 | *ext_param_list = type_param_spec_list; | |
3599 | *sym = instance; | |
3600 | gfc_commit_symbols (); | |
3601 | return m; | |
3602 | } | |
3603 | ||
3604 | /* Start building the new instance of the parameterized type. */ | |
3605 | gfc_copy_attr (&instance->attr, &pdt->attr, &pdt->declared_at); | |
3606 | instance->attr.pdt_template = 0; | |
3607 | instance->attr.pdt_type = 1; | |
3608 | instance->declared_at = gfc_current_locus; | |
3609 | ||
3610 | /* Add the components, replacing the parameters in all expressions | |
3611 | with the expressions for their values in 'type_param_spec_list'. */ | |
3612 | c1 = pdt->components; | |
3613 | tail = type_param_spec_list; | |
3614 | for (; c1; c1 = c1->next) | |
3615 | { | |
3616 | gfc_add_component (instance, c1->name, &c2); | |
f0efd2e8 | 3617 | |
9d958d5b | 3618 | c2->ts = c1->ts; |
3619 | c2->attr = c1->attr; | |
3620 | ||
f0efd2e8 | 3621 | /* The order of declaration of the type_specs might not be the |
3622 | same as that of the components. */ | |
3623 | if (c1->attr.pdt_kind || c1->attr.pdt_len) | |
3624 | { | |
3625 | for (tail = type_param_spec_list; tail; tail = tail->next) | |
3626 | if (strcmp (c1->name, tail->name) == 0) | |
3627 | break; | |
3628 | } | |
3629 | ||
9d958d5b | 3630 | /* Deal with type extension by recursively calling this function |
3631 | to obtain the instance of the extended type. */ | |
3632 | if (gfc_current_state () != COMP_DERIVED | |
3633 | && c1 == pdt->components | |
3634 | && (c1->ts.type == BT_DERIVED || c1->ts.type == BT_CLASS) | |
3635 | && c1->ts.u.derived && c1->ts.u.derived->attr.pdt_template | |
3636 | && gfc_get_derived_super_type (*sym) == c2->ts.u.derived) | |
3637 | { | |
3638 | gfc_formal_arglist *f; | |
3639 | ||
3640 | old_param_spec_list = type_param_spec_list; | |
3641 | ||
3642 | /* Obtain a spec list appropriate to the extended type..*/ | |
3643 | actual_param = gfc_copy_actual_arglist (type_param_spec_list); | |
3644 | type_param_spec_list = actual_param; | |
3645 | for (f = c1->ts.u.derived->formal; f && f->next; f = f->next) | |
3646 | actual_param = actual_param->next; | |
3647 | if (actual_param) | |
3648 | { | |
3649 | gfc_free_actual_arglist (actual_param->next); | |
3650 | actual_param->next = NULL; | |
3651 | } | |
3652 | ||
3653 | /* Now obtain the PDT instance for the extended type. */ | |
3654 | c2->param_list = type_param_spec_list; | |
3655 | m = gfc_get_pdt_instance (type_param_spec_list, &c2->ts.u.derived, | |
3656 | NULL); | |
3657 | type_param_spec_list = old_param_spec_list; | |
3658 | ||
3659 | c2->ts.u.derived->refs++; | |
3660 | gfc_set_sym_referenced (c2->ts.u.derived); | |
3661 | ||
3662 | /* Set extension level. */ | |
3663 | if (c2->ts.u.derived->attr.extension == 255) | |
3664 | { | |
3665 | /* Since the extension field is 8 bit wide, we can only have | |
3666 | up to 255 extension levels. */ | |
3667 | gfc_error ("Maximum extension level reached with type %qs at %L", | |
3668 | c2->ts.u.derived->name, | |
3669 | &c2->ts.u.derived->declared_at); | |
87a0366f | 3670 | goto error_return; |
9d958d5b | 3671 | } |
3672 | instance->attr.extension = c2->ts.u.derived->attr.extension + 1; | |
3673 | ||
9d958d5b | 3674 | continue; |
3675 | } | |
3676 | ||
3677 | /* Set the component kind using the parameterized expression. */ | |
f0efd2e8 | 3678 | if ((c1->ts.kind == 0 || c1->ts.type == BT_CHARACTER) |
3679 | && c1->kind_expr != NULL) | |
9d958d5b | 3680 | { |
3681 | gfc_expr *e = gfc_copy_expr (c1->kind_expr); | |
3682 | gfc_insert_kind_parameter_exprs (e); | |
9f96fdfe | 3683 | gfc_simplify_expr (e, 1); |
9d958d5b | 3684 | gfc_extract_int (e, &c2->ts.kind); |
3685 | gfc_free_expr (e); | |
87a0366f | 3686 | if (gfc_validate_kind (c2->ts.type, c2->ts.kind, true) < 0) |
3687 | { | |
3688 | gfc_error ("Kind %d not supported for type %s at %C", | |
3689 | c2->ts.kind, gfc_basic_typename (c2->ts.type)); | |
3690 | goto error_return; | |
3691 | } | |
9d958d5b | 3692 | } |
3693 | ||
3694 | /* Similarly, set the string length if parameterized. */ | |
3695 | if (c1->ts.type == BT_CHARACTER | |
3696 | && c1->ts.u.cl->length | |
3697 | && gfc_derived_parameter_expr (c1->ts.u.cl->length)) | |
3698 | { | |
3699 | gfc_expr *e; | |
3700 | e = gfc_copy_expr (c1->ts.u.cl->length); | |
3701 | gfc_insert_kind_parameter_exprs (e); | |
3702 | gfc_simplify_expr (e, 1); | |
3703 | c2->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); | |
3704 | c2->ts.u.cl->length = e; | |
3705 | c2->attr.pdt_string = 1; | |
3706 | } | |
3707 | ||
3708 | /* Set up either the KIND/LEN initializer, if constant, | |
3709 | or the parameterized expression. Use the template | |
3710 | initializer if one is not already set in this instance. */ | |
3711 | if (c2->attr.pdt_kind || c2->attr.pdt_len) | |
3712 | { | |
3713 | if (tail && tail->expr && gfc_is_constant_expr (tail->expr)) | |
3714 | c2->initializer = gfc_copy_expr (tail->expr); | |
3715 | else if (tail && tail->expr) | |
3716 | { | |
3717 | c2->param_list = gfc_get_actual_arglist (); | |
3718 | c2->param_list->name = tail->name; | |
3719 | c2->param_list->expr = gfc_copy_expr (tail->expr); | |
3720 | c2->param_list->next = NULL; | |
3721 | } | |
3722 | ||
3723 | if (!c2->initializer && c1->initializer) | |
3724 | c2->initializer = gfc_copy_expr (c1->initializer); | |
9d958d5b | 3725 | } |
3726 | ||
3727 | /* Copy the array spec. */ | |
3728 | c2->as = gfc_copy_array_spec (c1->as); | |
3729 | if (c1->ts.type == BT_CLASS) | |
3730 | CLASS_DATA (c2)->as = gfc_copy_array_spec (CLASS_DATA (c1)->as); | |
3731 | ||
3732 | /* Determine if an array spec is parameterized. If so, substitute | |
3733 | in the parameter expressions for the bounds and set the pdt_array | |
3734 | attribute. Notice that this attribute must be unconditionally set | |
3735 | if this is an array of parameterized character length. */ | |
3736 | if (c1->as && c1->as->type == AS_EXPLICIT) | |
3737 | { | |
3738 | bool pdt_array = false; | |
3739 | ||
3740 | /* Are the bounds of the array parameterized? */ | |
3741 | for (i = 0; i < c1->as->rank; i++) | |
3742 | { | |
3743 | if (gfc_derived_parameter_expr (c1->as->lower[i])) | |
3744 | pdt_array = true; | |
3745 | if (gfc_derived_parameter_expr (c1->as->upper[i])) | |
3746 | pdt_array = true; | |
3747 | } | |
3748 | ||
3749 | /* If they are, free the expressions for the bounds and | |
3750 | replace them with the template expressions with substitute | |
3751 | values. */ | |
3752 | for (i = 0; pdt_array && i < c1->as->rank; i++) | |
3753 | { | |
3754 | gfc_expr *e; | |
3755 | e = gfc_copy_expr (c1->as->lower[i]); | |
3756 | gfc_insert_kind_parameter_exprs (e); | |
3757 | gfc_simplify_expr (e, 1); | |
3758 | gfc_free_expr (c2->as->lower[i]); | |
3759 | c2->as->lower[i] = e; | |
3760 | e = gfc_copy_expr (c1->as->upper[i]); | |
3761 | gfc_insert_kind_parameter_exprs (e); | |
3762 | gfc_simplify_expr (e, 1); | |
3763 | gfc_free_expr (c2->as->upper[i]); | |
3764 | c2->as->upper[i] = e; | |
3765 | } | |
3766 | c2->attr.pdt_array = pdt_array ? 1 : c2->attr.pdt_string; | |
8534bf8a | 3767 | if (c1->initializer) |
3768 | { | |
3769 | c2->initializer = gfc_copy_expr (c1->initializer); | |
3770 | gfc_insert_kind_parameter_exprs (c2->initializer); | |
3771 | gfc_simplify_expr (c2->initializer, 1); | |
3772 | } | |
9d958d5b | 3773 | } |
3774 | ||
3775 | /* Recurse into this function for PDT components. */ | |
3776 | if ((c1->ts.type == BT_DERIVED || c1->ts.type == BT_CLASS) | |
3777 | && c1->ts.u.derived && c1->ts.u.derived->attr.pdt_template) | |
3778 | { | |
3779 | gfc_actual_arglist *params; | |
3780 | /* The component in the template has a list of specification | |
3781 | expressions derived from its declaration. */ | |
3782 | params = gfc_copy_actual_arglist (c1->param_list); | |
3783 | actual_param = params; | |
3784 | /* Substitute the template parameters with the expressions | |
3785 | from the specification list. */ | |
3786 | for (;actual_param; actual_param = actual_param->next) | |
3787 | gfc_insert_parameter_exprs (actual_param->expr, | |
3788 | type_param_spec_list); | |
3789 | ||
3790 | /* Now obtain the PDT instance for the component. */ | |
3791 | old_param_spec_list = type_param_spec_list; | |
3792 | m = gfc_get_pdt_instance (params, &c2->ts.u.derived, NULL); | |
3793 | type_param_spec_list = old_param_spec_list; | |
3794 | ||
3795 | c2->param_list = params; | |
d11013dc | 3796 | if (!(c2->attr.pointer || c2->attr.allocatable)) |
3797 | c2->initializer = gfc_default_initializer (&c2->ts); | |
3798 | ||
3799 | if (c2->attr.allocatable) | |
3800 | instance->attr.alloc_comp = 1; | |
9d958d5b | 3801 | } |
3802 | } | |
3803 | ||
3804 | gfc_commit_symbol (instance); | |
3805 | if (ext_param_list) | |
3806 | *ext_param_list = type_param_spec_list; | |
3807 | *sym = instance; | |
3808 | return m; | |
87a0366f | 3809 | |
3810 | error_return: | |
3811 | gfc_free_actual_arglist (type_param_spec_list); | |
3812 | return MATCH_ERROR; | |
9d958d5b | 3813 | } |
3814 | ||
3815 | ||
e8152f13 | 3816 | /* Matches a declaration-type-spec (F03:R502). If successful, sets the ts |
3817 | structure to the matched specification. This is necessary for FUNCTION and | |
4ee9c684 | 3818 | IMPLICIT statements. |
3819 | ||
e14bee04 | 3820 | If implicit_flag is nonzero, then we don't check for the optional |
39351103 | 3821 | kind specification. Not doing so is needed for matching an IMPLICIT |
4ee9c684 | 3822 | statement correctly. */ |
3823 | ||
67a51c8e | 3824 | match |
e8152f13 | 3825 | gfc_match_decl_type_spec (gfc_typespec *ts, int implicit_flag) |
4ee9c684 | 3826 | { |
3827 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
c2958b6b | 3828 | gfc_symbol *sym, *dt_sym; |
4ee9c684 | 3829 | match m; |
e0be6f02 | 3830 | char c; |
f446fb22 | 3831 | bool seen_deferred_kind, matched_type; |
c2958b6b | 3832 | const char *dt_name; |
4ee9c684 | 3833 | |
9d958d5b | 3834 | decl_type_param_list = NULL; |
3835 | ||
077932f9 | 3836 | /* A belt and braces check that the typespec is correctly being treated |
3837 | as a deferred characteristic association. */ | |
3838 | seen_deferred_kind = (gfc_current_state () == COMP_FUNCTION) | |
8d39570e | 3839 | && (gfc_current_block ()->result->ts.kind == -1) |
3840 | && (ts->kind == -1); | |
4ee9c684 | 3841 | gfc_clear_ts (ts); |
077932f9 | 3842 | if (seen_deferred_kind) |
3843 | ts->kind = -1; | |
4ee9c684 | 3844 | |
c5d33754 | 3845 | /* Clear the current binding label, in case one is given. */ |
7b2060ba | 3846 | curr_binding_label = NULL; |
c5d33754 | 3847 | |
25b29122 | 3848 | if (gfc_match (" byte") == MATCH_YES) |
3849 | { | |
60e19868 | 3850 | if (!gfc_notify_std (GFC_STD_GNU, "BYTE type at %C")) |
25b29122 | 3851 | return MATCH_ERROR; |
3852 | ||
3853 | if (gfc_validate_kind (BT_INTEGER, 1, true) < 0) | |
3854 | { | |
3855 | gfc_error ("BYTE type used at %C " | |
3856 | "is not available on the target machine"); | |
3857 | return MATCH_ERROR; | |
3858 | } | |
e14bee04 | 3859 | |
25b29122 | 3860 | ts->type = BT_INTEGER; |
3861 | ts->kind = 1; | |
3862 | return MATCH_YES; | |
3863 | } | |
3864 | ||
f446fb22 | 3865 | |
8c2d8d6d | 3866 | m = gfc_match (" type ("); |
f446fb22 | 3867 | matched_type = (m == MATCH_YES); |
8c2d8d6d | 3868 | if (matched_type) |
3869 | { | |
3870 | gfc_gobble_whitespace (); | |
3871 | if (gfc_peek_ascii_char () == '*') | |
3872 | { | |
3873 | if ((m = gfc_match ("*)")) != MATCH_YES) | |
3874 | return m; | |
d7cd448a | 3875 | if (gfc_comp_struct (gfc_current_state ())) |
8c2d8d6d | 3876 | { |
3877 | gfc_error ("Assumed type at %C is not allowed for components"); | |
3878 | return MATCH_ERROR; | |
3879 | } | |
2e2156cf | 3880 | if (!gfc_notify_std (GFC_STD_F2018, "Assumed type at %C")) |
8c2d8d6d | 3881 | return MATCH_ERROR; |
3882 | ts->type = BT_ASSUMED; | |
3883 | return MATCH_YES; | |
3884 | } | |
3885 | ||
3886 | m = gfc_match ("%n", name); | |
3887 | matched_type = (m == MATCH_YES); | |
3888 | } | |
3889 | ||
f446fb22 | 3890 | if ((matched_type && strcmp ("integer", name) == 0) |
3891 | || (!matched_type && gfc_match (" integer") == MATCH_YES)) | |
4ee9c684 | 3892 | { |
3893 | ts->type = BT_INTEGER; | |
b8a891cb | 3894 | ts->kind = gfc_default_integer_kind; |
4ee9c684 | 3895 | goto get_kind; |
3896 | } | |
3897 | ||
f446fb22 | 3898 | if ((matched_type && strcmp ("character", name) == 0) |
3899 | || (!matched_type && gfc_match (" character") == MATCH_YES)) | |
4ee9c684 | 3900 | { |
f446fb22 | 3901 | if (matched_type |
60e19868 | 3902 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3903 | "intrinsic-type-spec at %C")) | |
f446fb22 | 3904 | return MATCH_ERROR; |
3905 | ||
4ee9c684 | 3906 | ts->type = BT_CHARACTER; |
39351103 | 3907 | if (implicit_flag == 0) |
f446fb22 | 3908 | m = gfc_match_char_spec (ts); |
39351103 | 3909 | else |
f446fb22 | 3910 | m = MATCH_YES; |
3911 | ||
3912 | if (matched_type && m == MATCH_YES && gfc_match_char (')') != MATCH_YES) | |
3913 | m = MATCH_ERROR; | |
3914 | ||
3915 | return m; | |
4ee9c684 | 3916 | } |
3917 | ||
f446fb22 | 3918 | if ((matched_type && strcmp ("real", name) == 0) |
3919 | || (!matched_type && gfc_match (" real") == MATCH_YES)) | |
4ee9c684 | 3920 | { |
3921 | ts->type = BT_REAL; | |
b8a891cb | 3922 | ts->kind = gfc_default_real_kind; |
4ee9c684 | 3923 | goto get_kind; |
3924 | } | |
3925 | ||
f446fb22 | 3926 | if ((matched_type |
3927 | && (strcmp ("doubleprecision", name) == 0 | |
3928 | || (strcmp ("double", name) == 0 | |
3929 | && gfc_match (" precision") == MATCH_YES))) | |
3930 | || (!matched_type && gfc_match (" double precision") == MATCH_YES)) | |
4ee9c684 | 3931 | { |
f446fb22 | 3932 | if (matched_type |
60e19868 | 3933 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3934 | "intrinsic-type-spec at %C")) | |
f446fb22 | 3935 | return MATCH_ERROR; |
3936 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
3937 | return MATCH_ERROR; | |
3938 | ||
4ee9c684 | 3939 | ts->type = BT_REAL; |
b8a891cb | 3940 | ts->kind = gfc_default_double_kind; |
4ee9c684 | 3941 | return MATCH_YES; |
3942 | } | |
3943 | ||
f446fb22 | 3944 | if ((matched_type && strcmp ("complex", name) == 0) |
3945 | || (!matched_type && gfc_match (" complex") == MATCH_YES)) | |
4ee9c684 | 3946 | { |
3947 | ts->type = BT_COMPLEX; | |
b8a891cb | 3948 | ts->kind = gfc_default_complex_kind; |
4ee9c684 | 3949 | goto get_kind; |
3950 | } | |
3951 | ||
f446fb22 | 3952 | if ((matched_type |
3953 | && (strcmp ("doublecomplex", name) == 0 | |
3954 | || (strcmp ("double", name) == 0 | |
3955 | && gfc_match (" complex") == MATCH_YES))) | |
3956 | || (!matched_type && gfc_match (" double complex") == MATCH_YES)) | |
4ee9c684 | 3957 | { |
60e19868 | 3958 | if (!gfc_notify_std (GFC_STD_GNU, "DOUBLE COMPLEX at %C")) |
f446fb22 | 3959 | return MATCH_ERROR; |
3960 | ||
3961 | if (matched_type | |
60e19868 | 3962 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
3963 | "intrinsic-type-spec at %C")) | |
f446fb22 | 3964 | return MATCH_ERROR; |
3965 | ||
3966 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
be7f01a1 | 3967 | return MATCH_ERROR; |
3968 | ||
4ee9c684 | 3969 | ts->type = BT_COMPLEX; |
b8a891cb | 3970 | ts->kind = gfc_default_double_kind; |
4ee9c684 | 3971 | return MATCH_YES; |
3972 | } | |
3973 | ||
f446fb22 | 3974 | if ((matched_type && strcmp ("logical", name) == 0) |
3975 | || (!matched_type && gfc_match (" logical") == MATCH_YES)) | |
4ee9c684 | 3976 | { |
3977 | ts->type = BT_LOGICAL; | |
b8a891cb | 3978 | ts->kind = gfc_default_logical_kind; |
4ee9c684 | 3979 | goto get_kind; |
3980 | } | |
3981 | ||
f446fb22 | 3982 | if (matched_type) |
9d958d5b | 3983 | { |
3984 | m = gfc_match_actual_arglist (1, &decl_type_param_list, true); | |
3985 | if (m == MATCH_ERROR) | |
3986 | return m; | |
3987 | ||
f446fb22 | 3988 | m = gfc_match_char (')'); |
9d958d5b | 3989 | } |
f446fb22 | 3990 | |
d7cd448a | 3991 | if (m != MATCH_YES) |
3992 | m = match_record_decl (name); | |
3993 | ||
3994 | if (matched_type || m == MATCH_YES) | |
3995 | { | |
3996 | ts->type = BT_DERIVED; | |
3997 | /* We accept record/s/ or type(s) where s is a structure, but we | |
3998 | * don't need all the extra derived-type stuff for structures. */ | |
3999 | if (gfc_find_symbol (gfc_dt_upper_string (name), NULL, 1, &sym)) | |
4000 | { | |
1b7008c4 | 4001 | gfc_error ("Type name %qs at %C is ambiguous", name); |
d7cd448a | 4002 | return MATCH_ERROR; |
4003 | } | |
9d958d5b | 4004 | |
4005 | if (sym && sym->attr.flavor == FL_DERIVED | |
4006 | && sym->attr.pdt_template | |
4007 | && gfc_current_state () != COMP_DERIVED) | |
4008 | { | |
4009 | m = gfc_get_pdt_instance (decl_type_param_list, &sym, NULL); | |
4010 | if (m != MATCH_YES) | |
4011 | return m; | |
4012 | gcc_assert (!sym->attr.pdt_template && sym->attr.pdt_type); | |
4013 | ts->u.derived = sym; | |
4014 | strcpy (name, gfc_dt_lower_string (sym->name)); | |
4015 | } | |
4016 | ||
d7cd448a | 4017 | if (sym && sym->attr.flavor == FL_STRUCT) |
4018 | { | |
4019 | ts->u.derived = sym; | |
4020 | return MATCH_YES; | |
4021 | } | |
4022 | /* Actually a derived type. */ | |
4023 | } | |
4024 | ||
1de1b1a9 | 4025 | else |
8ca7f89c | 4026 | { |
d7cd448a | 4027 | /* Match nested STRUCTURE declarations; only valid within another |
891196d7 | 4028 | structure declaration. */ |
cf078427 | 4029 | if (flag_dec_structure |
891196d7 | 4030 | && (gfc_current_state () == COMP_STRUCTURE |
4031 | || gfc_current_state () == COMP_MAP)) | |
4032 | { | |
4033 | m = gfc_match (" structure"); | |
4034 | if (m == MATCH_YES) | |
4035 | { | |
4036 | m = gfc_match_structure_decl (); | |
4037 | if (m == MATCH_YES) | |
4038 | { | |
4039 | /* gfc_new_block is updated by match_structure_decl. */ | |
4040 | ts->type = BT_DERIVED; | |
4041 | ts->u.derived = gfc_new_block; | |
4042 | return MATCH_YES; | |
4043 | } | |
4044 | } | |
4045 | if (m == MATCH_ERROR) | |
4046 | return MATCH_ERROR; | |
4047 | } | |
d7cd448a | 4048 | |
fa102e56 | 4049 | /* Match CLASS declarations. */ |
4050 | m = gfc_match (" class ( * )"); | |
4051 | if (m == MATCH_ERROR) | |
4052 | return MATCH_ERROR; | |
4053 | else if (m == MATCH_YES) | |
4054 | { | |
a90fe829 | 4055 | gfc_symbol *upe; |
4056 | gfc_symtree *st; | |
4057 | ts->type = BT_CLASS; | |
8db94b3b | 4058 | gfc_find_symbol ("STAR", gfc_current_ns, 1, &upe); |
a90fe829 | 4059 | if (upe == NULL) |
4060 | { | |
8db94b3b | 4061 | upe = gfc_new_symbol ("STAR", gfc_current_ns); |
4062 | st = gfc_new_symtree (&gfc_current_ns->sym_root, "STAR"); | |
a90fe829 | 4063 | st->n.sym = upe; |
4064 | gfc_set_sym_referenced (upe); | |
4065 | upe->refs++; | |
4066 | upe->ts.type = BT_VOID; | |
4067 | upe->attr.unlimited_polymorphic = 1; | |
4068 | /* This is essential to force the construction of | |
4069 | unlimited polymorphic component class containers. */ | |
4070 | upe->attr.zero_comp = 1; | |
76e207a9 | 4071 | if (!gfc_add_flavor (&upe->attr, FL_DERIVED, NULL, |
60e19868 | 4072 | &gfc_current_locus)) |
f7b2c82b | 4073 | return MATCH_ERROR; |
4074 | } | |
a90fe829 | 4075 | else |
4076 | { | |
f7b2c82b | 4077 | st = gfc_get_tbp_symtree (&gfc_current_ns->sym_root, "STAR"); |
a90fe829 | 4078 | st->n.sym = upe; |
4079 | upe->refs++; | |
4080 | } | |
4081 | ts->u.derived = upe; | |
4082 | return m; | |
4083 | } | |
fa102e56 | 4084 | |
9d958d5b | 4085 | m = gfc_match (" class ("); |
4086 | ||
4087 | if (m == MATCH_YES) | |
4088 | m = gfc_match ("%n", name); | |
4089 | else | |
4090 | return m; | |
4091 | ||
8ca7f89c | 4092 | if (m != MATCH_YES) |
4093 | return m; | |
1de1b1a9 | 4094 | ts->type = BT_CLASS; |
8ca7f89c | 4095 | |
60e19868 | 4096 | if (!gfc_notify_std (GFC_STD_F2003, "CLASS statement at %C")) |
e8152f13 | 4097 | return MATCH_ERROR; |
9d958d5b | 4098 | |
4099 | m = gfc_match_actual_arglist (1, &decl_type_param_list, true); | |
4100 | if (m == MATCH_ERROR) | |
4101 | return m; | |
4102 | ||
4103 | m = gfc_match_char (')'); | |
4104 | if (m != MATCH_YES) | |
4105 | return m; | |
8ca7f89c | 4106 | } |
4ee9c684 | 4107 | |
077932f9 | 4108 | /* Defer association of the derived type until the end of the |
4109 | specification block. However, if the derived type can be | |
8db94b3b | 4110 | found, add it to the typespec. */ |
077932f9 | 4111 | if (gfc_matching_function) |
67a51c8e | 4112 | { |
eeebe20b | 4113 | ts->u.derived = NULL; |
077932f9 | 4114 | if (gfc_current_state () != COMP_INTERFACE |
4115 | && !gfc_find_symbol (name, NULL, 1, &sym) && sym) | |
c2958b6b | 4116 | { |
4117 | sym = gfc_find_dt_in_generic (sym); | |
4118 | ts->u.derived = sym; | |
4119 | } | |
67a51c8e | 4120 | return MATCH_YES; |
4121 | } | |
4122 | ||
4123 | /* Search for the name but allow the components to be defined later. If | |
4124 | type = -1, this typespec has been seen in a function declaration but | |
c2958b6b | 4125 | the type could not be accessed at that point. The actual derived type is |
df084314 | 4126 | stored in a symtree with the first letter of the name capitalized; the |
c2958b6b | 4127 | symtree with the all lower-case name contains the associated |
4128 | generic function. */ | |
d7cd448a | 4129 | dt_name = gfc_dt_upper_string (name); |
077932f9 | 4130 | sym = NULL; |
c2958b6b | 4131 | dt_sym = NULL; |
4132 | if (ts->kind != -1) | |
4ee9c684 | 4133 | { |
c2958b6b | 4134 | gfc_get_ha_symbol (name, &sym); |
4135 | if (sym->generic && gfc_find_symbol (dt_name, NULL, 0, &dt_sym)) | |
4136 | { | |
716da296 | 4137 | gfc_error ("Type name %qs at %C is ambiguous", name); |
c2958b6b | 4138 | return MATCH_ERROR; |
4139 | } | |
4140 | if (sym->generic && !dt_sym) | |
4141 | dt_sym = gfc_find_dt_in_generic (sym); | |
87a0366f | 4142 | |
4143 | /* Host associated PDTs can get confused with their constructors | |
4144 | because they ar instantiated in the template's namespace. */ | |
4145 | if (!dt_sym) | |
4146 | { | |
4147 | if (gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
4148 | { | |
4149 | gfc_error ("Type name %qs at %C is ambiguous", name); | |
4150 | return MATCH_ERROR; | |
4151 | } | |
4152 | if (dt_sym && !dt_sym->attr.pdt_type) | |
4153 | dt_sym = NULL; | |
4154 | } | |
4ee9c684 | 4155 | } |
67a51c8e | 4156 | else if (ts->kind == -1) |
4157 | { | |
077932f9 | 4158 | int iface = gfc_state_stack->previous->state != COMP_INTERFACE |
4159 | || gfc_current_ns->has_import_set; | |
c2958b6b | 4160 | gfc_find_symbol (name, NULL, iface, &sym); |
4161 | if (sym && sym->generic && gfc_find_symbol (dt_name, NULL, 1, &dt_sym)) | |
8db94b3b | 4162 | { |
716da296 | 4163 | gfc_error ("Type name %qs at %C is ambiguous", name); |
67a51c8e | 4164 | return MATCH_ERROR; |
4165 | } | |
c2958b6b | 4166 | if (sym && sym->generic && !dt_sym) |
4167 | dt_sym = gfc_find_dt_in_generic (sym); | |
67a51c8e | 4168 | |
077932f9 | 4169 | ts->kind = 0; |
67a51c8e | 4170 | if (sym == NULL) |
4171 | return MATCH_NO; | |
4172 | } | |
4ee9c684 | 4173 | |
d7cd448a | 4174 | if ((sym->attr.flavor != FL_UNKNOWN && sym->attr.flavor != FL_STRUCT |
c2958b6b | 4175 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.generic)) |
4176 | || sym->attr.subroutine) | |
4177 | { | |
e87256b0 | 4178 | gfc_error ("Type name %qs at %C conflicts with previously declared " |
4179 | "entity at %L, which has the same name", name, | |
4180 | &sym->declared_at); | |
c2958b6b | 4181 | return MATCH_ERROR; |
4182 | } | |
4ee9c684 | 4183 | |
9d958d5b | 4184 | if (sym && sym->attr.flavor == FL_DERIVED |
4185 | && sym->attr.pdt_template | |
4186 | && gfc_current_state () != COMP_DERIVED) | |
87a0366f | 4187 | { |
4188 | m = gfc_get_pdt_instance (decl_type_param_list, &sym, NULL); | |
4189 | if (m != MATCH_YES) | |
4190 | return m; | |
4191 | gcc_assert (!sym->attr.pdt_template && sym->attr.pdt_type); | |
4192 | ts->u.derived = sym; | |
4193 | strcpy (name, gfc_dt_lower_string (sym->name)); | |
4194 | } | |
9d958d5b | 4195 | |
72bec0a3 | 4196 | gfc_save_symbol_data (sym); |
077932f9 | 4197 | gfc_set_sym_referenced (sym); |
c2958b6b | 4198 | if (!sym->attr.generic |
60e19868 | 4199 | && !gfc_add_generic (&sym->attr, sym->name, NULL)) |
c2958b6b | 4200 | return MATCH_ERROR; |
4201 | ||
4202 | if (!sym->attr.function | |
60e19868 | 4203 | && !gfc_add_function (&sym->attr, sym->name, NULL)) |
c2958b6b | 4204 | return MATCH_ERROR; |
4205 | ||
9d958d5b | 4206 | if (dt_sym && dt_sym->attr.flavor == FL_DERIVED |
4207 | && dt_sym->attr.pdt_template | |
4208 | && gfc_current_state () != COMP_DERIVED) | |
4209 | { | |
4210 | m = gfc_get_pdt_instance (decl_type_param_list, &dt_sym, NULL); | |
4211 | if (m != MATCH_YES) | |
4212 | return m; | |
4213 | gcc_assert (!dt_sym->attr.pdt_template && dt_sym->attr.pdt_type); | |
4214 | } | |
4215 | ||
c2958b6b | 4216 | if (!dt_sym) |
4217 | { | |
4218 | gfc_interface *intr, *head; | |
4219 | ||
4220 | /* Use upper case to save the actual derived-type symbol. */ | |
4221 | gfc_get_symbol (dt_name, NULL, &dt_sym); | |
dc326dc0 | 4222 | dt_sym->name = gfc_get_string ("%s", sym->name); |
c2958b6b | 4223 | head = sym->generic; |
4224 | intr = gfc_get_interface (); | |
4225 | intr->sym = dt_sym; | |
4226 | intr->where = gfc_current_locus; | |
4227 | intr->next = head; | |
4228 | sym->generic = intr; | |
4229 | sym->attr.if_source = IFSRC_DECL; | |
4230 | } | |
72bec0a3 | 4231 | else |
4232 | gfc_save_symbol_data (dt_sym); | |
c2958b6b | 4233 | |
4234 | gfc_set_sym_referenced (dt_sym); | |
4235 | ||
d7cd448a | 4236 | if (dt_sym->attr.flavor != FL_DERIVED && dt_sym->attr.flavor != FL_STRUCT |
60e19868 | 4237 | && !gfc_add_flavor (&dt_sym->attr, FL_DERIVED, sym->name, NULL)) |
c2958b6b | 4238 | return MATCH_ERROR; |
4239 | ||
4240 | ts->u.derived = dt_sym; | |
4ee9c684 | 4241 | |
4242 | return MATCH_YES; | |
4243 | ||
4244 | get_kind: | |
f446fb22 | 4245 | if (matched_type |
60e19868 | 4246 | && !gfc_notify_std (GFC_STD_F2008, "TYPE with " |
4247 | "intrinsic-type-spec at %C")) | |
f446fb22 | 4248 | return MATCH_ERROR; |
4249 | ||
4ee9c684 | 4250 | /* For all types except double, derived and character, look for an |
4251 | optional kind specifier. MATCH_NO is actually OK at this point. */ | |
39351103 | 4252 | if (implicit_flag == 1) |
f446fb22 | 4253 | { |
4254 | if (matched_type && gfc_match_char (')') != MATCH_YES) | |
4255 | return MATCH_ERROR; | |
4256 | ||
4257 | return MATCH_YES; | |
4258 | } | |
4ee9c684 | 4259 | |
18f3698a | 4260 | if (gfc_current_form == FORM_FREE) |
4261 | { | |
2c89e2a0 | 4262 | c = gfc_peek_ascii_char (); |
4263 | if (!gfc_is_whitespace (c) && c != '*' && c != '(' | |
1a9745d2 | 4264 | && c != ':' && c != ',') |
f446fb22 | 4265 | { |
4266 | if (matched_type && c == ')') | |
4267 | { | |
4268 | gfc_next_ascii_char (); | |
4269 | return MATCH_YES; | |
4270 | } | |
4271 | return MATCH_NO; | |
4272 | } | |
18f3698a | 4273 | } |
4274 | ||
67a51c8e | 4275 | m = gfc_match_kind_spec (ts, false); |
4ee9c684 | 4276 | if (m == MATCH_NO && ts->type != BT_CHARACTER) |
9627a89d | 4277 | { |
4278 | m = gfc_match_old_kind_spec (ts); | |
4279 | if (gfc_validate_kind (ts->type, ts->kind, true) == -1) | |
4280 | return MATCH_ERROR; | |
4281 | } | |
4ee9c684 | 4282 | |
f446fb22 | 4283 | if (matched_type && gfc_match_char (')') != MATCH_YES) |
4284 | return MATCH_ERROR; | |
4285 | ||
077932f9 | 4286 | /* Defer association of the KIND expression of function results |
4287 | until after USE and IMPORT statements. */ | |
4288 | if ((gfc_current_state () == COMP_NONE && gfc_error_flag_test ()) | |
4289 | || gfc_matching_function) | |
4290 | return MATCH_YES; | |
4291 | ||
4ee9c684 | 4292 | if (m == MATCH_NO) |
4293 | m = MATCH_YES; /* No kind specifier found. */ | |
4294 | ||
4295 | return m; | |
4296 | } | |
4297 | ||
4298 | ||
39351103 | 4299 | /* Match an IMPLICIT NONE statement. Actually, this statement is |
4300 | already matched in parse.c, or we would not end up here in the | |
4301 | first place. So the only thing we need to check, is if there is | |
4302 | trailing garbage. If not, the match is successful. */ | |
4303 | ||
4304 | match | |
4305 | gfc_match_implicit_none (void) | |
4306 | { | |
0daab503 | 4307 | char c; |
4308 | match m; | |
4309 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4310 | bool type = false; | |
4311 | bool external = false; | |
94fea777 | 4312 | locus cur_loc = gfc_current_locus; |
4313 | ||
4314 | if (gfc_current_ns->seen_implicit_none | |
4315 | || gfc_current_ns->has_implicit_none_export) | |
4316 | { | |
4317 | gfc_error ("Duplicate IMPLICIT NONE statement at %C"); | |
4318 | return MATCH_ERROR; | |
4319 | } | |
0daab503 | 4320 | |
4321 | gfc_gobble_whitespace (); | |
4322 | c = gfc_peek_ascii_char (); | |
4323 | if (c == '(') | |
4324 | { | |
4325 | (void) gfc_next_ascii_char (); | |
003e134b | 4326 | if (!gfc_notify_std (GFC_STD_F2018, "IMPORT NONE with spec list at %C")) |
0daab503 | 4327 | return MATCH_ERROR; |
94fea777 | 4328 | |
4329 | gfc_gobble_whitespace (); | |
4330 | if (gfc_peek_ascii_char () == ')') | |
0daab503 | 4331 | { |
94fea777 | 4332 | (void) gfc_next_ascii_char (); |
4333 | type = true; | |
4334 | } | |
4335 | else | |
4336 | for(;;) | |
4337 | { | |
4338 | m = gfc_match (" %n", name); | |
4339 | if (m != MATCH_YES) | |
4340 | return MATCH_ERROR; | |
0daab503 | 4341 | |
94fea777 | 4342 | if (strcmp (name, "type") == 0) |
4343 | type = true; | |
4344 | else if (strcmp (name, "external") == 0) | |
4345 | external = true; | |
4346 | else | |
4347 | return MATCH_ERROR; | |
0daab503 | 4348 | |
94fea777 | 4349 | gfc_gobble_whitespace (); |
4350 | c = gfc_next_ascii_char (); | |
4351 | if (c == ',') | |
4352 | continue; | |
4353 | if (c == ')') | |
4354 | break; | |
4355 | return MATCH_ERROR; | |
4356 | } | |
0daab503 | 4357 | } |
4358 | else | |
4359 | type = true; | |
4360 | ||
4361 | if (gfc_match_eos () != MATCH_YES) | |
4362 | return MATCH_ERROR; | |
4363 | ||
94fea777 | 4364 | gfc_set_implicit_none (type, external, &cur_loc); |
0daab503 | 4365 | |
4366 | return MATCH_YES; | |
39351103 | 4367 | } |
4368 | ||
4369 | ||
4370 | /* Match the letter range(s) of an IMPLICIT statement. */ | |
4371 | ||
4372 | static match | |
b70528c7 | 4373 | match_implicit_range (void) |
39351103 | 4374 | { |
e0be6f02 | 4375 | char c, c1, c2; |
4376 | int inner; | |
39351103 | 4377 | locus cur_loc; |
4378 | ||
4379 | cur_loc = gfc_current_locus; | |
4380 | ||
4381 | gfc_gobble_whitespace (); | |
e0be6f02 | 4382 | c = gfc_next_ascii_char (); |
39351103 | 4383 | if (c != '(') |
4384 | { | |
4385 | gfc_error ("Missing character range in IMPLICIT at %C"); | |
4386 | goto bad; | |
4387 | } | |
4388 | ||
4389 | inner = 1; | |
4390 | while (inner) | |
4391 | { | |
4392 | gfc_gobble_whitespace (); | |
e0be6f02 | 4393 | c1 = gfc_next_ascii_char (); |
39351103 | 4394 | if (!ISALPHA (c1)) |
4395 | goto bad; | |
4396 | ||
4397 | gfc_gobble_whitespace (); | |
e0be6f02 | 4398 | c = gfc_next_ascii_char (); |
39351103 | 4399 | |
4400 | switch (c) | |
4401 | { | |
4402 | case ')': | |
f6d0e37a | 4403 | inner = 0; /* Fall through. */ |
39351103 | 4404 | |
4405 | case ',': | |
4406 | c2 = c1; | |
4407 | break; | |
4408 | ||
4409 | case '-': | |
4410 | gfc_gobble_whitespace (); | |
e0be6f02 | 4411 | c2 = gfc_next_ascii_char (); |
39351103 | 4412 | if (!ISALPHA (c2)) |
4413 | goto bad; | |
4414 | ||
4415 | gfc_gobble_whitespace (); | |
e0be6f02 | 4416 | c = gfc_next_ascii_char (); |
39351103 | 4417 | |
4418 | if ((c != ',') && (c != ')')) | |
4419 | goto bad; | |
4420 | if (c == ')') | |
4421 | inner = 0; | |
4422 | ||
4423 | break; | |
4424 | ||
4425 | default: | |
4426 | goto bad; | |
4427 | } | |
4428 | ||
4429 | if (c1 > c2) | |
4430 | { | |
4431 | gfc_error ("Letters must be in alphabetic order in " | |
4432 | "IMPLICIT statement at %C"); | |
4433 | goto bad; | |
4434 | } | |
4435 | ||
4436 | /* See if we can add the newly matched range to the pending | |
1a9745d2 | 4437 | implicits from this IMPLICIT statement. We do not check for |
4438 | conflicts with whatever earlier IMPLICIT statements may have | |
4439 | set. This is done when we've successfully finished matching | |
4440 | the current one. */ | |
60e19868 | 4441 | if (!gfc_add_new_implicit_range (c1, c2)) |
39351103 | 4442 | goto bad; |
4443 | } | |
4444 | ||
4445 | return MATCH_YES; | |
4446 | ||
4447 | bad: | |
4448 | gfc_syntax_error (ST_IMPLICIT); | |
4449 | ||
4450 | gfc_current_locus = cur_loc; | |
4451 | return MATCH_ERROR; | |
4452 | } | |
4453 | ||
4454 | ||
4455 | /* Match an IMPLICIT statement, storing the types for | |
4456 | gfc_set_implicit() if the statement is accepted by the parser. | |
4457 | There is a strange looking, but legal syntactic construction | |
4458 | possible. It looks like: | |
4459 | ||
4460 | IMPLICIT INTEGER (a-b) (c-d) | |
4461 | ||
4462 | This is legal if "a-b" is a constant expression that happens to | |
4463 | equal one of the legal kinds for integers. The real problem | |
4464 | happens with an implicit specification that looks like: | |
4465 | ||
4466 | IMPLICIT INTEGER (a-b) | |
4467 | ||
4468 | In this case, a typespec matcher that is "greedy" (as most of the | |
4469 | matchers are) gobbles the character range as a kindspec, leaving | |
4470 | nothing left. We therefore have to go a bit more slowly in the | |
4471 | matching process by inhibiting the kindspec checking during | |
4472 | typespec matching and checking for a kind later. */ | |
4473 | ||
4474 | match | |
4475 | gfc_match_implicit (void) | |
4476 | { | |
4477 | gfc_typespec ts; | |
4478 | locus cur_loc; | |
e0be6f02 | 4479 | char c; |
39351103 | 4480 | match m; |
4481 | ||
0daab503 | 4482 | if (gfc_current_ns->seen_implicit_none) |
4483 | { | |
4484 | gfc_error ("IMPLICIT statement at %C following an IMPLICIT NONE (type) " | |
4485 | "statement"); | |
4486 | return MATCH_ERROR; | |
4487 | } | |
4488 | ||
52179f31 | 4489 | gfc_clear_ts (&ts); |
4490 | ||
39351103 | 4491 | /* We don't allow empty implicit statements. */ |
4492 | if (gfc_match_eos () == MATCH_YES) | |
4493 | { | |
4494 | gfc_error ("Empty IMPLICIT statement at %C"); | |
4495 | return MATCH_ERROR; | |
4496 | } | |
4497 | ||
39351103 | 4498 | do |
4499 | { | |
b70528c7 | 4500 | /* First cleanup. */ |
4501 | gfc_clear_new_implicit (); | |
4502 | ||
39351103 | 4503 | /* A basic type is mandatory here. */ |
e8152f13 | 4504 | m = gfc_match_decl_type_spec (&ts, 1); |
39351103 | 4505 | if (m == MATCH_ERROR) |
4506 | goto error; | |
4507 | if (m == MATCH_NO) | |
4508 | goto syntax; | |
4509 | ||
4510 | cur_loc = gfc_current_locus; | |
b70528c7 | 4511 | m = match_implicit_range (); |
39351103 | 4512 | |
4513 | if (m == MATCH_YES) | |
4514 | { | |
b70528c7 | 4515 | /* We may have <TYPE> (<RANGE>). */ |
39351103 | 4516 | gfc_gobble_whitespace (); |
94fea777 | 4517 | c = gfc_peek_ascii_char (); |
4518 | if (c == ',' || c == '\n' || c == ';' || c == '!') | |
b70528c7 | 4519 | { |
4520 | /* Check for CHARACTER with no length parameter. */ | |
eeebe20b | 4521 | if (ts.type == BT_CHARACTER && !ts.u.cl) |
b70528c7 | 4522 | { |
b8a891cb | 4523 | ts.kind = gfc_default_character_kind; |
d270ce52 | 4524 | ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL); |
9f4d9f83 | 4525 | ts.u.cl->length = gfc_get_int_expr (gfc_charlen_int_kind, |
126387b5 | 4526 | NULL, 1); |
b70528c7 | 4527 | } |
4528 | ||
4529 | /* Record the Successful match. */ | |
60e19868 | 4530 | if (!gfc_merge_new_implicit (&ts)) |
b70528c7 | 4531 | return MATCH_ERROR; |
94fea777 | 4532 | if (c == ',') |
4533 | c = gfc_next_ascii_char (); | |
4534 | else if (gfc_match_eos () == MATCH_ERROR) | |
4535 | goto error; | |
b70528c7 | 4536 | continue; |
4537 | } | |
39351103 | 4538 | |
4539 | gfc_current_locus = cur_loc; | |
4540 | } | |
4541 | ||
b70528c7 | 4542 | /* Discard the (incorrectly) matched range. */ |
4543 | gfc_clear_new_implicit (); | |
4544 | ||
4545 | /* Last chance -- check <TYPE> <SELECTOR> (<RANGE>). */ | |
4546 | if (ts.type == BT_CHARACTER) | |
10f5dcc0 | 4547 | m = gfc_match_char_spec (&ts); |
b70528c7 | 4548 | else |
39351103 | 4549 | { |
67a51c8e | 4550 | m = gfc_match_kind_spec (&ts, false); |
39351103 | 4551 | if (m == MATCH_NO) |
b70528c7 | 4552 | { |
4553 | m = gfc_match_old_kind_spec (&ts); | |
4554 | if (m == MATCH_ERROR) | |
4555 | goto error; | |
4556 | if (m == MATCH_NO) | |
4557 | goto syntax; | |
4558 | } | |
39351103 | 4559 | } |
b70528c7 | 4560 | if (m == MATCH_ERROR) |
4561 | goto error; | |
39351103 | 4562 | |
b70528c7 | 4563 | m = match_implicit_range (); |
39351103 | 4564 | if (m == MATCH_ERROR) |
4565 | goto error; | |
4566 | if (m == MATCH_NO) | |
4567 | goto syntax; | |
4568 | ||
4569 | gfc_gobble_whitespace (); | |
e0be6f02 | 4570 | c = gfc_next_ascii_char (); |
94fea777 | 4571 | if (c != ',' && gfc_match_eos () != MATCH_YES) |
39351103 | 4572 | goto syntax; |
4573 | ||
60e19868 | 4574 | if (!gfc_merge_new_implicit (&ts)) |
b70528c7 | 4575 | return MATCH_ERROR; |
39351103 | 4576 | } |
4577 | while (c == ','); | |
4578 | ||
b70528c7 | 4579 | return MATCH_YES; |
39351103 | 4580 | |
4581 | syntax: | |
4582 | gfc_syntax_error (ST_IMPLICIT); | |
4583 | ||
4584 | error: | |
4585 | return MATCH_ERROR; | |
4586 | } | |
4587 | ||
f6d0e37a | 4588 | |
d67fc9ae | 4589 | match |
4590 | gfc_match_import (void) | |
4591 | { | |
4592 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
4593 | match m; | |
4594 | gfc_symbol *sym; | |
4595 | gfc_symtree *st; | |
4596 | ||
f6d0e37a | 4597 | if (gfc_current_ns->proc_name == NULL |
4598 | || gfc_current_ns->proc_name->attr.if_source != IFSRC_IFBODY) | |
d67fc9ae | 4599 | { |
4600 | gfc_error ("IMPORT statement at %C only permitted in " | |
4601 | "an INTERFACE body"); | |
4602 | return MATCH_ERROR; | |
4603 | } | |
4604 | ||
4b8eb6ca | 4605 | if (gfc_current_ns->proc_name->attr.module_procedure) |
4606 | { | |
4607 | gfc_error ("F2008: C1210 IMPORT statement at %C is not permitted " | |
4608 | "in a module procedure interface body"); | |
4609 | return MATCH_ERROR; | |
4610 | } | |
4611 | ||
60e19868 | 4612 | if (!gfc_notify_std (GFC_STD_F2003, "IMPORT statement at %C")) |
d67fc9ae | 4613 | return MATCH_ERROR; |
4614 | ||
4615 | if (gfc_match_eos () == MATCH_YES) | |
4616 | { | |
4617 | /* All host variables should be imported. */ | |
4618 | gfc_current_ns->has_import_set = 1; | |
4619 | return MATCH_YES; | |
4620 | } | |
4621 | ||
4622 | if (gfc_match (" ::") == MATCH_YES) | |
4623 | { | |
4624 | if (gfc_match_eos () == MATCH_YES) | |
1a9745d2 | 4625 | { |
4626 | gfc_error ("Expecting list of named entities at %C"); | |
4627 | return MATCH_ERROR; | |
4628 | } | |
d67fc9ae | 4629 | } |
4630 | ||
4631 | for(;;) | |
4632 | { | |
495e197c | 4633 | sym = NULL; |
d67fc9ae | 4634 | m = gfc_match (" %n", name); |
4635 | switch (m) | |
4636 | { | |
4637 | case MATCH_YES: | |
096d4ad9 | 4638 | if (gfc_current_ns->parent != NULL |
f6d0e37a | 4639 | && gfc_find_symbol (name, gfc_current_ns->parent, 1, &sym)) |
096d4ad9 | 4640 | { |
716da296 | 4641 | gfc_error ("Type name %qs at %C is ambiguous", name); |
096d4ad9 | 4642 | return MATCH_ERROR; |
4643 | } | |
6b010511 | 4644 | else if (!sym && gfc_current_ns->proc_name->ns->parent != NULL |
f6d0e37a | 4645 | && gfc_find_symbol (name, |
4646 | gfc_current_ns->proc_name->ns->parent, | |
4647 | 1, &sym)) | |
1a9745d2 | 4648 | { |
716da296 | 4649 | gfc_error ("Type name %qs at %C is ambiguous", name); |
1a9745d2 | 4650 | return MATCH_ERROR; |
4651 | } | |
4652 | ||
4653 | if (sym == NULL) | |
4654 | { | |
716da296 | 4655 | gfc_error ("Cannot IMPORT %qs from host scoping unit " |
1a9745d2 | 4656 | "at %C - does not exist.", name); |
4657 | return MATCH_ERROR; | |
4658 | } | |
4659 | ||
d67dd34f | 4660 | if (gfc_find_symtree (gfc_current_ns->sym_root, name)) |
1a9745d2 | 4661 | { |
6f521718 | 4662 | gfc_warning (0, "%qs is already IMPORTed from host scoping unit " |
4166acc7 | 4663 | "at %C", name); |
1a9745d2 | 4664 | goto next_item; |
4665 | } | |
4666 | ||
d67dd34f | 4667 | st = gfc_new_symtree (&gfc_current_ns->sym_root, name); |
1a9745d2 | 4668 | st->n.sym = sym; |
4669 | sym->refs++; | |
c723595c | 4670 | sym->attr.imported = 1; |
d67fc9ae | 4671 | |
c2958b6b | 4672 | if (sym->attr.generic && (sym = gfc_find_dt_in_generic (sym))) |
4673 | { | |
4674 | /* The actual derived type is stored in a symtree with the first | |
df084314 | 4675 | letter of the name capitalized; the symtree with the all |
293d72e0 | 4676 | lower-case name contains the associated generic function. */ |
c2958b6b | 4677 | st = gfc_new_symtree (&gfc_current_ns->sym_root, |
d7cd448a | 4678 | gfc_dt_upper_string (name)); |
c2958b6b | 4679 | st->n.sym = sym; |
4680 | sym->refs++; | |
4681 | sym->attr.imported = 1; | |
4682 | } | |
4683 | ||
d67fc9ae | 4684 | goto next_item; |
4685 | ||
4686 | case MATCH_NO: | |
4687 | break; | |
4688 | ||
4689 | case MATCH_ERROR: | |
4690 | return MATCH_ERROR; | |
4691 | } | |
4692 | ||
4693 | next_item: | |
4694 | if (gfc_match_eos () == MATCH_YES) | |
4695 | break; | |
4696 | if (gfc_match_char (',') != MATCH_YES) | |
4697 | goto syntax; | |
4698 | } | |
4699 | ||
4700 | return MATCH_YES; | |
4701 | ||
4702 | syntax: | |
4703 | gfc_error ("Syntax error in IMPORT statement at %C"); | |
4704 | return MATCH_ERROR; | |
4705 | } | |
39351103 | 4706 | |
f6d0e37a | 4707 | |
c72e5f7e | 4708 | /* A minimal implementation of gfc_match without whitespace, escape |
4709 | characters or variable arguments. Returns true if the next | |
4710 | characters match the TARGET template exactly. */ | |
4711 | ||
4712 | static bool | |
4713 | match_string_p (const char *target) | |
4714 | { | |
4715 | const char *p; | |
4716 | ||
4717 | for (p = target; *p; p++) | |
e0be6f02 | 4718 | if ((char) gfc_next_ascii_char () != *p) |
c72e5f7e | 4719 | return false; |
4720 | return true; | |
4721 | } | |
4722 | ||
4ee9c684 | 4723 | /* Matches an attribute specification including array specs. If |
4724 | successful, leaves the variables current_attr and current_as | |
4725 | holding the specification. Also sets the colon_seen variable for | |
4726 | later use by matchers associated with initializations. | |
4727 | ||
4728 | This subroutine is a little tricky in the sense that we don't know | |
4729 | if we really have an attr-spec until we hit the double colon. | |
4730 | Until that time, we can only return MATCH_NO. This forces us to | |
4731 | check for duplicate specification at this level. */ | |
4732 | ||
4733 | static match | |
4734 | match_attr_spec (void) | |
4735 | { | |
4ee9c684 | 4736 | /* Modifiers that can exist in a type statement. */ |
d55c3689 | 4737 | enum |
55be378c | 4738 | { GFC_DECL_BEGIN = 0, DECL_ALLOCATABLE = GFC_DECL_BEGIN, |
4739 | DECL_IN = INTENT_IN, DECL_OUT = INTENT_OUT, DECL_INOUT = INTENT_INOUT, | |
4740 | DECL_DIMENSION, DECL_EXTERNAL, | |
4741 | DECL_INTRINSIC, DECL_OPTIONAL, | |
3ea52af3 | 4742 | DECL_PARAMETER, DECL_POINTER, DECL_PROTECTED, DECL_PRIVATE, |
8e652fcf | 4743 | DECL_STATIC, DECL_AUTOMATIC, |
3ea52af3 | 4744 | DECL_PUBLIC, DECL_SAVE, DECL_TARGET, DECL_VALUE, DECL_VOLATILE, |
b3c3927c | 4745 | DECL_IS_BIND_C, DECL_CODIMENSION, DECL_ASYNCHRONOUS, DECL_CONTIGUOUS, |
9d958d5b | 4746 | DECL_LEN, DECL_KIND, DECL_NONE, GFC_DECL_END /* Sentinel */ |
d55c3689 | 4747 | }; |
4ee9c684 | 4748 | |
4749 | /* GFC_DECL_END is the sentinel, index starts at 0. */ | |
4750 | #define NUM_DECL GFC_DECL_END | |
4751 | ||
55be378c | 4752 | /* Make sure that values from sym_intent are safe to be used here. */ |
4753 | gcc_assert (INTENT_IN > 0); | |
4754 | ||
4ee9c684 | 4755 | locus start, seen_at[NUM_DECL]; |
4756 | int seen[NUM_DECL]; | |
9f1b7d17 | 4757 | unsigned int d; |
4ee9c684 | 4758 | const char *attr; |
4759 | match m; | |
60e19868 | 4760 | bool t; |
4ee9c684 | 4761 | |
4762 | gfc_clear_attr (¤t_attr); | |
cbb9e6aa | 4763 | start = gfc_current_locus; |
4ee9c684 | 4764 | |
4765 | current_as = NULL; | |
4766 | colon_seen = 0; | |
8ef2cf76 | 4767 | attr_seen = 0; |
4ee9c684 | 4768 | |
4769 | /* See if we get all of the keywords up to the final double colon. */ | |
4770 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
4771 | seen[d] = 0; | |
4772 | ||
4773 | for (;;) | |
4774 | { | |
e0be6f02 | 4775 | char ch; |
c5d33754 | 4776 | |
c72e5f7e | 4777 | d = DECL_NONE; |
4778 | gfc_gobble_whitespace (); | |
4779 | ||
e0be6f02 | 4780 | ch = gfc_next_ascii_char (); |
c72e5f7e | 4781 | if (ch == ':') |
4782 | { | |
4783 | /* This is the successful exit condition for the loop. */ | |
e0be6f02 | 4784 | if (gfc_next_ascii_char () == ':') |
c72e5f7e | 4785 | break; |
4786 | } | |
4787 | else if (ch == ',') | |
c5d33754 | 4788 | { |
c5d33754 | 4789 | gfc_gobble_whitespace (); |
e0be6f02 | 4790 | switch (gfc_peek_ascii_char ()) |
c5d33754 | 4791 | { |
c72e5f7e | 4792 | case 'a': |
738928be | 4793 | gfc_next_ascii_char (); |
4794 | switch (gfc_next_ascii_char ()) | |
4795 | { | |
4796 | case 'l': | |
4797 | if (match_string_p ("locatable")) | |
4798 | { | |
4799 | /* Matched "allocatable". */ | |
4800 | d = DECL_ALLOCATABLE; | |
4801 | } | |
4802 | break; | |
4803 | ||
4804 | case 's': | |
4805 | if (match_string_p ("ynchronous")) | |
4806 | { | |
4807 | /* Matched "asynchronous". */ | |
4808 | d = DECL_ASYNCHRONOUS; | |
4809 | } | |
4810 | break; | |
8e652fcf | 4811 | |
4812 | case 'u': | |
4813 | if (match_string_p ("tomatic")) | |
4814 | { | |
4815 | /* Matched "automatic". */ | |
4816 | d = DECL_AUTOMATIC; | |
4817 | } | |
4818 | break; | |
738928be | 4819 | } |
b3c3927c | 4820 | break; |
c72e5f7e | 4821 | |
4822 | case 'b': | |
c5d33754 | 4823 | /* Try and match the bind(c). */ |
75ae7f6c | 4824 | m = gfc_match_bind_c (NULL, true); |
5cf92482 | 4825 | if (m == MATCH_YES) |
c5d33754 | 4826 | d = DECL_IS_BIND_C; |
5cf92482 | 4827 | else if (m == MATCH_ERROR) |
4828 | goto cleanup; | |
c72e5f7e | 4829 | break; |
4830 | ||
aff518b0 | 4831 | case 'c': |
b3c3927c | 4832 | gfc_next_ascii_char (); |
4833 | if ('o' != gfc_next_ascii_char ()) | |
4834 | break; | |
4835 | switch (gfc_next_ascii_char ()) | |
4836 | { | |
4837 | case 'd': | |
4838 | if (match_string_p ("imension")) | |
4839 | { | |
4840 | d = DECL_CODIMENSION; | |
4841 | break; | |
4842 | } | |
e3533433 | 4843 | /* FALLTHRU */ |
b3c3927c | 4844 | case 'n': |
4845 | if (match_string_p ("tiguous")) | |
4846 | { | |
4847 | d = DECL_CONTIGUOUS; | |
4848 | break; | |
4849 | } | |
4850 | } | |
aff518b0 | 4851 | break; |
4852 | ||
c72e5f7e | 4853 | case 'd': |
4854 | if (match_string_p ("dimension")) | |
4855 | d = DECL_DIMENSION; | |
4856 | break; | |
4857 | ||
4858 | case 'e': | |
4859 | if (match_string_p ("external")) | |
4860 | d = DECL_EXTERNAL; | |
4861 | break; | |
4862 | ||
4863 | case 'i': | |
4864 | if (match_string_p ("int")) | |
4865 | { | |
e0be6f02 | 4866 | ch = gfc_next_ascii_char (); |
c72e5f7e | 4867 | if (ch == 'e') |
4868 | { | |
4869 | if (match_string_p ("nt")) | |
4870 | { | |
4871 | /* Matched "intent". */ | |
55be378c | 4872 | d = match_intent_spec (); |
4873 | if (d == INTENT_UNKNOWN) | |
4874 | { | |
4875 | m = MATCH_ERROR; | |
4876 | goto cleanup; | |
4877 | } | |
c72e5f7e | 4878 | } |
4879 | } | |
4880 | else if (ch == 'r') | |
4881 | { | |
4882 | if (match_string_p ("insic")) | |
4883 | { | |
4884 | /* Matched "intrinsic". */ | |
4885 | d = DECL_INTRINSIC; | |
4886 | } | |
4887 | } | |
4888 | } | |
4889 | break; | |
4890 | ||
9d958d5b | 4891 | case 'k': |
4892 | if (match_string_p ("kind")) | |
4893 | d = DECL_KIND; | |
4894 | break; | |
4895 | ||
4896 | case 'l': | |
4897 | if (match_string_p ("len")) | |
4898 | d = DECL_LEN; | |
4899 | break; | |
4900 | ||
c72e5f7e | 4901 | case 'o': |
4902 | if (match_string_p ("optional")) | |
4903 | d = DECL_OPTIONAL; | |
4904 | break; | |
4905 | ||
4906 | case 'p': | |
e0be6f02 | 4907 | gfc_next_ascii_char (); |
4908 | switch (gfc_next_ascii_char ()) | |
c72e5f7e | 4909 | { |
4910 | case 'a': | |
4911 | if (match_string_p ("rameter")) | |
4912 | { | |
4913 | /* Matched "parameter". */ | |
4914 | d = DECL_PARAMETER; | |
4915 | } | |
4916 | break; | |
4917 | ||
4918 | case 'o': | |
4919 | if (match_string_p ("inter")) | |
4920 | { | |
4921 | /* Matched "pointer". */ | |
4922 | d = DECL_POINTER; | |
4923 | } | |
4924 | break; | |
4925 | ||
4926 | case 'r': | |
e0be6f02 | 4927 | ch = gfc_next_ascii_char (); |
c72e5f7e | 4928 | if (ch == 'i') |
4929 | { | |
4930 | if (match_string_p ("vate")) | |
4931 | { | |
4932 | /* Matched "private". */ | |
4933 | d = DECL_PRIVATE; | |
4934 | } | |
4935 | } | |
4936 | else if (ch == 'o') | |
4937 | { | |
4938 | if (match_string_p ("tected")) | |
4939 | { | |
4940 | /* Matched "protected". */ | |
4941 | d = DECL_PROTECTED; | |
4942 | } | |
4943 | } | |
4944 | break; | |
4945 | ||
4946 | case 'u': | |
4947 | if (match_string_p ("blic")) | |
4948 | { | |
4949 | /* Matched "public". */ | |
4950 | d = DECL_PUBLIC; | |
4951 | } | |
4952 | break; | |
4953 | } | |
4954 | break; | |
4955 | ||
4956 | case 's': | |
8e652fcf | 4957 | gfc_next_ascii_char (); |
4958 | switch (gfc_next_ascii_char ()) | |
4959 | { | |
4960 | case 'a': | |
4961 | if (match_string_p ("ve")) | |
4962 | { | |
4963 | /* Matched "save". */ | |
4964 | d = DECL_SAVE; | |
4965 | } | |
4966 | break; | |
4967 | ||
4968 | case 't': | |
4969 | if (match_string_p ("atic")) | |
4970 | { | |
4971 | /* Matched "static". */ | |
4972 | d = DECL_STATIC; | |
4973 | } | |
4974 | break; | |
4975 | } | |
c72e5f7e | 4976 | break; |
4977 | ||
4978 | case 't': | |
4979 | if (match_string_p ("target")) | |
4980 | d = DECL_TARGET; | |
4981 | break; | |
4982 | ||
4983 | case 'v': | |
e0be6f02 | 4984 | gfc_next_ascii_char (); |
4985 | ch = gfc_next_ascii_char (); | |
c72e5f7e | 4986 | if (ch == 'a') |
4987 | { | |
4988 | if (match_string_p ("lue")) | |
4989 | { | |
4990 | /* Matched "value". */ | |
4991 | d = DECL_VALUE; | |
4992 | } | |
4993 | } | |
4994 | else if (ch == 'o') | |
4995 | { | |
4996 | if (match_string_p ("latile")) | |
4997 | { | |
4998 | /* Matched "volatile". */ | |
4999 | d = DECL_VOLATILE; | |
5000 | } | |
5001 | } | |
5002 | break; | |
c5d33754 | 5003 | } |
5004 | } | |
f3f9b222 | 5005 | |
c72e5f7e | 5006 | /* No double colon and no recognizable decl_type, so assume that |
5007 | we've been looking at something else the whole time. */ | |
5008 | if (d == DECL_NONE) | |
5009 | { | |
5010 | m = MATCH_NO; | |
5011 | goto cleanup; | |
5012 | } | |
e14bee04 | 5013 | |
7e221851 | 5014 | /* Check to make sure any parens are paired up correctly. */ |
5015 | if (gfc_match_parens () == MATCH_ERROR) | |
5016 | { | |
5017 | m = MATCH_ERROR; | |
5018 | goto cleanup; | |
5019 | } | |
5020 | ||
4ee9c684 | 5021 | seen[d]++; |
cbb9e6aa | 5022 | seen_at[d] = gfc_current_locus; |
4ee9c684 | 5023 | |
e97ac7c0 | 5024 | if (d == DECL_DIMENSION || d == DECL_CODIMENSION) |
4ee9c684 | 5025 | { |
e97ac7c0 | 5026 | gfc_array_spec *as = NULL; |
4ee9c684 | 5027 | |
e97ac7c0 | 5028 | m = gfc_match_array_spec (&as, d == DECL_DIMENSION, |
5029 | d == DECL_CODIMENSION); | |
5030 | ||
5031 | if (current_as == NULL) | |
5032 | current_as = as; | |
5033 | else if (m == MATCH_YES) | |
4ee9c684 | 5034 | { |
60e19868 | 5035 | if (!merge_array_spec (as, current_as, false)) |
9b58b4c7 | 5036 | m = MATCH_ERROR; |
434f0922 | 5037 | free (as); |
4ee9c684 | 5038 | } |
5039 | ||
aff518b0 | 5040 | if (m == MATCH_NO) |
5041 | { | |
e97ac7c0 | 5042 | if (d == DECL_CODIMENSION) |
5043 | gfc_error ("Missing codimension specification at %C"); | |
5044 | else | |
5045 | gfc_error ("Missing dimension specification at %C"); | |
aff518b0 | 5046 | m = MATCH_ERROR; |
5047 | } | |
5048 | ||
5049 | if (m == MATCH_ERROR) | |
5050 | goto cleanup; | |
5051 | } | |
4ee9c684 | 5052 | } |
5053 | ||
4ee9c684 | 5054 | /* Since we've seen a double colon, we have to be looking at an |
5055 | attr-spec. This means that we can now issue errors. */ | |
5056 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
5057 | if (seen[d] > 1) | |
5058 | { | |
5059 | switch (d) | |
5060 | { | |
5061 | case DECL_ALLOCATABLE: | |
5062 | attr = "ALLOCATABLE"; | |
5063 | break; | |
738928be | 5064 | case DECL_ASYNCHRONOUS: |
5065 | attr = "ASYNCHRONOUS"; | |
5066 | break; | |
aff518b0 | 5067 | case DECL_CODIMENSION: |
5068 | attr = "CODIMENSION"; | |
5069 | break; | |
b3c3927c | 5070 | case DECL_CONTIGUOUS: |
5071 | attr = "CONTIGUOUS"; | |
5072 | break; | |
4ee9c684 | 5073 | case DECL_DIMENSION: |
5074 | attr = "DIMENSION"; | |
5075 | break; | |
5076 | case DECL_EXTERNAL: | |
5077 | attr = "EXTERNAL"; | |
5078 | break; | |
5079 | case DECL_IN: | |
5080 | attr = "INTENT (IN)"; | |
5081 | break; | |
5082 | case DECL_OUT: | |
5083 | attr = "INTENT (OUT)"; | |
5084 | break; | |
5085 | case DECL_INOUT: | |
5086 | attr = "INTENT (IN OUT)"; | |
5087 | break; | |
5088 | case DECL_INTRINSIC: | |
5089 | attr = "INTRINSIC"; | |
5090 | break; | |
5091 | case DECL_OPTIONAL: | |
5092 | attr = "OPTIONAL"; | |
5093 | break; | |
9d958d5b | 5094 | case DECL_KIND: |
5095 | attr = "KIND"; | |
5096 | break; | |
5097 | case DECL_LEN: | |
5098 | attr = "LEN"; | |
5099 | break; | |
4ee9c684 | 5100 | case DECL_PARAMETER: |
5101 | attr = "PARAMETER"; | |
5102 | break; | |
5103 | case DECL_POINTER: | |
5104 | attr = "POINTER"; | |
5105 | break; | |
3ea52af3 | 5106 | case DECL_PROTECTED: |
5107 | attr = "PROTECTED"; | |
5108 | break; | |
4ee9c684 | 5109 | case DECL_PRIVATE: |
5110 | attr = "PRIVATE"; | |
5111 | break; | |
5112 | case DECL_PUBLIC: | |
5113 | attr = "PUBLIC"; | |
5114 | break; | |
5115 | case DECL_SAVE: | |
5116 | attr = "SAVE"; | |
5117 | break; | |
8e652fcf | 5118 | case DECL_STATIC: |
5119 | attr = "STATIC"; | |
5120 | break; | |
5121 | case DECL_AUTOMATIC: | |
5122 | attr = "AUTOMATIC"; | |
5123 | break; | |
4ee9c684 | 5124 | case DECL_TARGET: |
5125 | attr = "TARGET"; | |
5126 | break; | |
c5d33754 | 5127 | case DECL_IS_BIND_C: |
5128 | attr = "IS_BIND_C"; | |
5129 | break; | |
5130 | case DECL_VALUE: | |
5131 | attr = "VALUE"; | |
5132 | break; | |
ef814c81 | 5133 | case DECL_VOLATILE: |
5134 | attr = "VOLATILE"; | |
5135 | break; | |
4ee9c684 | 5136 | default: |
f6d0e37a | 5137 | attr = NULL; /* This shouldn't happen. */ |
4ee9c684 | 5138 | } |
5139 | ||
5140 | gfc_error ("Duplicate %s attribute at %L", attr, &seen_at[d]); | |
5141 | m = MATCH_ERROR; | |
5142 | goto cleanup; | |
5143 | } | |
5144 | ||
5145 | /* Now that we've dealt with duplicate attributes, add the attributes | |
5146 | to the current attribute. */ | |
5147 | for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++) | |
5148 | { | |
5149 | if (seen[d] == 0) | |
5150 | continue; | |
8ef2cf76 | 5151 | else |
5152 | attr_seen = 1; | |
4ee9c684 | 5153 | |
8e652fcf | 5154 | if ((d == DECL_STATIC || d == DECL_AUTOMATIC) |
5155 | && !flag_dec_static) | |
5156 | { | |
841da9cf | 5157 | gfc_error ("%s at %L is a DEC extension, enable with " |
5158 | "%<-fdec-static%>", | |
8e652fcf | 5159 | d == DECL_STATIC ? "STATIC" : "AUTOMATIC", &seen_at[d]); |
5160 | m = MATCH_ERROR; | |
5161 | goto cleanup; | |
5162 | } | |
5163 | /* Allow SAVE with STATIC, but don't complain. */ | |
5164 | if (d == DECL_STATIC && seen[DECL_SAVE]) | |
5165 | continue; | |
5166 | ||
4ee9c684 | 5167 | if (gfc_current_state () == COMP_DERIVED |
aff518b0 | 5168 | && d != DECL_DIMENSION && d != DECL_CODIMENSION |
5169 | && d != DECL_POINTER && d != DECL_PRIVATE | |
b3c3927c | 5170 | && d != DECL_PUBLIC && d != DECL_CONTIGUOUS && d != DECL_NONE) |
4ee9c684 | 5171 | { |
2294b616 | 5172 | if (d == DECL_ALLOCATABLE) |
5173 | { | |
60e19868 | 5174 | if (!gfc_notify_std (GFC_STD_F2003, "ALLOCATABLE " |
5175 | "attribute at %C in a TYPE definition")) | |
2294b616 | 5176 | { |
5177 | m = MATCH_ERROR; | |
5178 | goto cleanup; | |
5179 | } | |
1a9745d2 | 5180 | } |
9d958d5b | 5181 | else if (d == DECL_KIND) |
5182 | { | |
5183 | if (!gfc_notify_std (GFC_STD_F2003, "KIND " | |
5184 | "attribute at %C in a TYPE definition")) | |
5185 | { | |
5186 | m = MATCH_ERROR; | |
5187 | goto cleanup; | |
5188 | } | |
5189 | if (current_ts.type != BT_INTEGER) | |
5190 | { | |
5191 | gfc_error ("Component with KIND attribute at %C must be " | |
5192 | "INTEGER"); | |
5193 | m = MATCH_ERROR; | |
5194 | goto cleanup; | |
5195 | } | |
5196 | if (current_ts.kind != gfc_default_integer_kind) | |
5197 | { | |
5198 | gfc_error ("Component with KIND attribute at %C must be " | |
5199 | "default integer kind (%d)", | |
5200 | gfc_default_integer_kind); | |
5201 | m = MATCH_ERROR; | |
5202 | goto cleanup; | |
5203 | } | |
5204 | } | |
5205 | else if (d == DECL_LEN) | |
5206 | { | |
5207 | if (!gfc_notify_std (GFC_STD_F2003, "LEN " | |
5208 | "attribute at %C in a TYPE definition")) | |
5209 | { | |
5210 | m = MATCH_ERROR; | |
5211 | goto cleanup; | |
5212 | } | |
5213 | if (current_ts.type != BT_INTEGER) | |
5214 | { | |
5215 | gfc_error ("Component with LEN attribute at %C must be " | |
5216 | "INTEGER"); | |
5217 | m = MATCH_ERROR; | |
5218 | goto cleanup; | |
5219 | } | |
5220 | if (current_ts.kind != gfc_default_integer_kind) | |
5221 | { | |
5222 | gfc_error ("Component with LEN attribute at %C must be " | |
5223 | "default integer kind (%d)", | |
5224 | gfc_default_integer_kind); | |
5225 | m = MATCH_ERROR; | |
5226 | goto cleanup; | |
5227 | } | |
5228 | } | |
1a9745d2 | 5229 | else |
2294b616 | 5230 | { |
5231 | gfc_error ("Attribute at %L is not allowed in a TYPE definition", | |
e14bee04 | 5232 | &seen_at[d]); |
2294b616 | 5233 | m = MATCH_ERROR; |
5234 | goto cleanup; | |
5235 | } | |
4ee9c684 | 5236 | } |
5237 | ||
ea13b9b7 | 5238 | if ((d == DECL_PRIVATE || d == DECL_PUBLIC) |
1a9745d2 | 5239 | && gfc_current_state () != COMP_MODULE) |
ea13b9b7 | 5240 | { |
5241 | if (d == DECL_PRIVATE) | |
5242 | attr = "PRIVATE"; | |
5243 | else | |
5244 | attr = "PUBLIC"; | |
e14bee04 | 5245 | if (gfc_current_state () == COMP_DERIVED |
5246 | && gfc_state_stack->previous | |
5247 | && gfc_state_stack->previous->state == COMP_MODULE) | |
5248 | { | |
60e19868 | 5249 | if (!gfc_notify_std (GFC_STD_F2003, "Attribute %s " |
76e207a9 | 5250 | "at %L in a TYPE definition", attr, |
60e19868 | 5251 | &seen_at[d])) |
e14bee04 | 5252 | { |
5253 | m = MATCH_ERROR; | |
5254 | goto cleanup; | |
5255 | } | |
5256 | } | |
5257 | else | |
5258 | { | |
5259 | gfc_error ("%s attribute at %L is not allowed outside of the " | |
5260 | "specification part of a module", attr, &seen_at[d]); | |
5261 | m = MATCH_ERROR; | |
5262 | goto cleanup; | |
5263 | } | |
ea13b9b7 | 5264 | } |
5265 | ||
9d958d5b | 5266 | if (gfc_current_state () != COMP_DERIVED |
5267 | && (d == DECL_KIND || d == DECL_LEN)) | |
5268 | { | |
5269 | gfc_error ("Attribute at %L is not allowed outside a TYPE " | |
5270 | "definition", &seen_at[d]); | |
5271 | m = MATCH_ERROR; | |
5272 | goto cleanup; | |
5273 | } | |
5274 | ||
4ee9c684 | 5275 | switch (d) |
5276 | { | |
5277 | case DECL_ALLOCATABLE: | |
5278 | t = gfc_add_allocatable (¤t_attr, &seen_at[d]); | |
5279 | break; | |
5280 | ||
738928be | 5281 | case DECL_ASYNCHRONOUS: |
60e19868 | 5282 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS attribute at %C")) |
5283 | t = false; | |
738928be | 5284 | else |
5285 | t = gfc_add_asynchronous (¤t_attr, NULL, &seen_at[d]); | |
5286 | break; | |
5287 | ||
aff518b0 | 5288 | case DECL_CODIMENSION: |
5289 | t = gfc_add_codimension (¤t_attr, NULL, &seen_at[d]); | |
5290 | break; | |
5291 | ||
b3c3927c | 5292 | case DECL_CONTIGUOUS: |
60e19868 | 5293 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS attribute at %C")) |
5294 | t = false; | |
b3c3927c | 5295 | else |
5296 | t = gfc_add_contiguous (¤t_attr, NULL, &seen_at[d]); | |
5297 | break; | |
5298 | ||
4ee9c684 | 5299 | case DECL_DIMENSION: |
950683ed | 5300 | t = gfc_add_dimension (¤t_attr, NULL, &seen_at[d]); |
4ee9c684 | 5301 | break; |
5302 | ||
5303 | case DECL_EXTERNAL: | |
5304 | t = gfc_add_external (¤t_attr, &seen_at[d]); | |
5305 | break; | |
5306 | ||
5307 | case DECL_IN: | |
5308 | t = gfc_add_intent (¤t_attr, INTENT_IN, &seen_at[d]); | |
5309 | break; | |
5310 | ||
5311 | case DECL_OUT: | |
5312 | t = gfc_add_intent (¤t_attr, INTENT_OUT, &seen_at[d]); | |
5313 | break; | |
5314 | ||
5315 | case DECL_INOUT: | |
5316 | t = gfc_add_intent (¤t_attr, INTENT_INOUT, &seen_at[d]); | |
5317 | break; | |
5318 | ||
5319 | case DECL_INTRINSIC: | |
5320 | t = gfc_add_intrinsic (¤t_attr, &seen_at[d]); | |
5321 | break; | |
5322 | ||
5323 | case DECL_OPTIONAL: | |
5324 | t = gfc_add_optional (¤t_attr, &seen_at[d]); | |
5325 | break; | |
5326 | ||
9d958d5b | 5327 | case DECL_KIND: |
5328 | t = gfc_add_kind (¤t_attr, &seen_at[d]); | |
5329 | break; | |
5330 | ||
5331 | case DECL_LEN: | |
5332 | t = gfc_add_len (¤t_attr, &seen_at[d]); | |
5333 | break; | |
5334 | ||
4ee9c684 | 5335 | case DECL_PARAMETER: |
950683ed | 5336 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, &seen_at[d]); |
4ee9c684 | 5337 | break; |
5338 | ||
5339 | case DECL_POINTER: | |
5340 | t = gfc_add_pointer (¤t_attr, &seen_at[d]); | |
5341 | break; | |
5342 | ||
3ea52af3 | 5343 | case DECL_PROTECTED: |
8371b2e9 | 5344 | if (gfc_current_state () != COMP_MODULE |
5345 | || (gfc_current_ns->proc_name | |
5346 | && gfc_current_ns->proc_name->attr.flavor != FL_MODULE)) | |
3ea52af3 | 5347 | { |
5348 | gfc_error ("PROTECTED at %C only allowed in specification " | |
5349 | "part of a module"); | |
60e19868 | 5350 | t = false; |
3ea52af3 | 5351 | break; |
5352 | } | |
5353 | ||
60e19868 | 5354 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED attribute at %C")) |
5355 | t = false; | |
3ea52af3 | 5356 | else |
5357 | t = gfc_add_protected (¤t_attr, NULL, &seen_at[d]); | |
5358 | break; | |
5359 | ||
4ee9c684 | 5360 | case DECL_PRIVATE: |
950683ed | 5361 | t = gfc_add_access (¤t_attr, ACCESS_PRIVATE, NULL, |
5362 | &seen_at[d]); | |
4ee9c684 | 5363 | break; |
5364 | ||
5365 | case DECL_PUBLIC: | |
950683ed | 5366 | t = gfc_add_access (¤t_attr, ACCESS_PUBLIC, NULL, |
5367 | &seen_at[d]); | |
4ee9c684 | 5368 | break; |
5369 | ||
8e652fcf | 5370 | case DECL_STATIC: |
4ee9c684 | 5371 | case DECL_SAVE: |
23d075f4 | 5372 | t = gfc_add_save (¤t_attr, SAVE_EXPLICIT, NULL, &seen_at[d]); |
4ee9c684 | 5373 | break; |
5374 | ||
8e652fcf | 5375 | case DECL_AUTOMATIC: |
5376 | t = gfc_add_automatic (¤t_attr, NULL, &seen_at[d]); | |
5377 | break; | |
5378 | ||
4ee9c684 | 5379 | case DECL_TARGET: |
5380 | t = gfc_add_target (¤t_attr, &seen_at[d]); | |
5381 | break; | |
5382 | ||
c5d33754 | 5383 | case DECL_IS_BIND_C: |
5384 | t = gfc_add_is_bind_c(¤t_attr, NULL, &seen_at[d], 0); | |
5385 | break; | |
8db94b3b | 5386 | |
8f6339b6 | 5387 | case DECL_VALUE: |
60e19868 | 5388 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE attribute at %C")) |
5389 | t = false; | |
8f6339b6 | 5390 | else |
5391 | t = gfc_add_value (¤t_attr, NULL, &seen_at[d]); | |
5392 | break; | |
5393 | ||
ef814c81 | 5394 | case DECL_VOLATILE: |
60e19868 | 5395 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE attribute at %C")) |
5396 | t = false; | |
ef814c81 | 5397 | else |
5398 | t = gfc_add_volatile (¤t_attr, NULL, &seen_at[d]); | |
5399 | break; | |
5400 | ||
4ee9c684 | 5401 | default: |
5402 | gfc_internal_error ("match_attr_spec(): Bad attribute"); | |
5403 | } | |
5404 | ||
60e19868 | 5405 | if (!t) |
4ee9c684 | 5406 | { |
5407 | m = MATCH_ERROR; | |
5408 | goto cleanup; | |
5409 | } | |
5410 | } | |
5411 | ||
c25834c9 | 5412 | /* Since Fortran 2008 module variables implicitly have the SAVE attribute. */ |
4b8eb6ca | 5413 | if ((gfc_current_state () == COMP_MODULE |
5414 | || gfc_current_state () == COMP_SUBMODULE) | |
5415 | && !current_attr.save | |
c25834c9 | 5416 | && (gfc_option.allow_std & GFC_STD_F2008) != 0) |
23d075f4 | 5417 | current_attr.save = SAVE_IMPLICIT; |
5418 | ||
4ee9c684 | 5419 | colon_seen = 1; |
5420 | return MATCH_YES; | |
5421 | ||
5422 | cleanup: | |
cbb9e6aa | 5423 | gfc_current_locus = start; |
4ee9c684 | 5424 | gfc_free_array_spec (current_as); |
5425 | current_as = NULL; | |
8ef2cf76 | 5426 | attr_seen = 0; |
4ee9c684 | 5427 | return m; |
5428 | } | |
5429 | ||
5430 | ||
c5d33754 | 5431 | /* Set the binding label, dest_label, either with the binding label |
5432 | stored in the given gfc_typespec, ts, or if none was provided, it | |
5433 | will be the symbol name in all lower case, as required by the draft | |
5434 | (J3/04-007, section 15.4.1). If a binding label was given and | |
5435 | there is more than one argument (num_idents), it is an error. */ | |
5436 | ||
60e19868 | 5437 | static bool |
8db94b3b | 5438 | set_binding_label (const char **dest_label, const char *sym_name, |
1d8a57d8 | 5439 | int num_idents) |
c5d33754 | 5440 | { |
825718f9 | 5441 | if (num_idents > 1 && has_name_equals) |
c5d33754 | 5442 | { |
825718f9 | 5443 | gfc_error ("Multiple identifiers provided with " |
5444 | "single NAME= specifier at %C"); | |
60e19868 | 5445 | return false; |
825718f9 | 5446 | } |
c5d33754 | 5447 | |
7b2060ba | 5448 | if (curr_binding_label) |
df084314 | 5449 | /* Binding label given; store in temp holder till have sym. */ |
7b2060ba | 5450 | *dest_label = curr_binding_label; |
c5d33754 | 5451 | else |
5452 | { | |
5453 | /* No binding label given, and the NAME= specifier did not exist, | |
5454 | which means there was no NAME="". */ | |
5455 | if (sym_name != NULL && has_name_equals == 0) | |
7b2060ba | 5456 | *dest_label = IDENTIFIER_POINTER (get_identifier (sym_name)); |
c5d33754 | 5457 | } |
8db94b3b | 5458 | |
60e19868 | 5459 | return true; |
c5d33754 | 5460 | } |
5461 | ||
5462 | ||
5463 | /* Set the status of the given common block as being BIND(C) or not, | |
5464 | depending on the given parameter, is_bind_c. */ | |
5465 | ||
5466 | void | |
5467 | set_com_block_bind_c (gfc_common_head *com_block, int is_bind_c) | |
5468 | { | |
5469 | com_block->is_bind_c = is_bind_c; | |
5470 | return; | |
5471 | } | |
5472 | ||
5473 | ||
5474 | /* Verify that the given gfc_typespec is for a C interoperable type. */ | |
5475 | ||
60e19868 | 5476 | bool |
2564c57a | 5477 | gfc_verify_c_interop (gfc_typespec *ts) |
c5d33754 | 5478 | { |
eeebe20b | 5479 | if (ts->type == BT_DERIVED && ts->u.derived != NULL) |
5f9b1308 | 5480 | return (ts->u.derived->ts.is_c_interop || ts->u.derived->attr.is_bind_c) |
60e19868 | 5481 | ? true : false; |
2564c57a | 5482 | else if (ts->type == BT_CLASS) |
60e19868 | 5483 | return false; |
8c2d8d6d | 5484 | else if (ts->is_c_interop != 1 && ts->type != BT_ASSUMED) |
60e19868 | 5485 | return false; |
8c2d8d6d | 5486 | |
60e19868 | 5487 | return true; |
c5d33754 | 5488 | } |
5489 | ||
5490 | ||
5491 | /* Verify that the variables of a given common block, which has been | |
5492 | defined with the attribute specifier bind(c), to be of a C | |
5493 | interoperable type. Errors will be reported here, if | |
5494 | encountered. */ | |
5495 | ||
60e19868 | 5496 | bool |
c5d33754 | 5497 | verify_com_block_vars_c_interop (gfc_common_head *com_block) |
5498 | { | |
5499 | gfc_symbol *curr_sym = NULL; | |
60e19868 | 5500 | bool retval = true; |
c5d33754 | 5501 | |
5502 | curr_sym = com_block->head; | |
8db94b3b | 5503 | |
c5d33754 | 5504 | /* Make sure we have at least one symbol. */ |
5505 | if (curr_sym == NULL) | |
5506 | return retval; | |
5507 | ||
5508 | /* Here we know we have a symbol, so we'll execute this loop | |
5509 | at least once. */ | |
5510 | do | |
5511 | { | |
5512 | /* The second to last param, 1, says this is in a common block. */ | |
5513 | retval = verify_bind_c_sym (curr_sym, &(curr_sym->ts), 1, com_block); | |
5514 | curr_sym = curr_sym->common_next; | |
8db94b3b | 5515 | } while (curr_sym != NULL); |
c5d33754 | 5516 | |
5517 | return retval; | |
5518 | } | |
5519 | ||
5520 | ||
5521 | /* Verify that a given BIND(C) symbol is C interoperable. If it is not, | |
5522 | an appropriate error message is reported. */ | |
5523 | ||
60e19868 | 5524 | bool |
c5d33754 | 5525 | verify_bind_c_sym (gfc_symbol *tmp_sym, gfc_typespec *ts, |
5526 | int is_in_common, gfc_common_head *com_block) | |
5527 | { | |
1f2ab120 | 5528 | bool bind_c_function = false; |
60e19868 | 5529 | bool retval = true; |
4f7bb9ec | 5530 | |
1f2ab120 | 5531 | if (tmp_sym->attr.function && tmp_sym->attr.is_bind_c) |
5532 | bind_c_function = true; | |
5533 | ||
4f7bb9ec | 5534 | if (tmp_sym->attr.function && tmp_sym->result != NULL) |
5535 | { | |
5536 | tmp_sym = tmp_sym->result; | |
5537 | /* Make sure it wasn't an implicitly typed result. */ | |
bf79c656 | 5538 | if (tmp_sym->attr.implicit_type && warn_c_binding_type) |
4f7bb9ec | 5539 | { |
4166acc7 | 5540 | gfc_warning (OPT_Wc_binding_type, |
5541 | "Implicitly declared BIND(C) function %qs at " | |
4f7bb9ec | 5542 | "%L may not be C interoperable", tmp_sym->name, |
5543 | &tmp_sym->declared_at); | |
5544 | tmp_sym->ts.f90_type = tmp_sym->ts.type; | |
5545 | /* Mark it as C interoperable to prevent duplicate warnings. */ | |
5546 | tmp_sym->ts.is_c_interop = 1; | |
5547 | tmp_sym->attr.is_c_interop = 1; | |
5548 | } | |
5549 | } | |
1f2ab120 | 5550 | |
c5d33754 | 5551 | /* Here, we know we have the bind(c) attribute, so if we have |
5552 | enough type info, then verify that it's a C interop kind. | |
5553 | The info could be in the symbol already, or possibly still in | |
5554 | the given ts (current_ts), so look in both. */ | |
8db94b3b | 5555 | if (tmp_sym->ts.type != BT_UNKNOWN || ts->type != BT_UNKNOWN) |
c5d33754 | 5556 | { |
60e19868 | 5557 | if (!gfc_verify_c_interop (&(tmp_sym->ts))) |
c5d33754 | 5558 | { |
5559 | /* See if we're dealing with a sym in a common block or not. */ | |
bf79c656 | 5560 | if (is_in_common == 1 && warn_c_binding_type) |
c5d33754 | 5561 | { |
4166acc7 | 5562 | gfc_warning (OPT_Wc_binding_type, |
5563 | "Variable %qs in common block %qs at %L " | |
c5d33754 | 5564 | "may not be a C interoperable " |
4166acc7 | 5565 | "kind though common block %qs is BIND(C)", |
c5d33754 | 5566 | tmp_sym->name, com_block->name, |
5567 | &(tmp_sym->declared_at), com_block->name); | |
5568 | } | |
5569 | else | |
5570 | { | |
5571 | if (tmp_sym->ts.type == BT_DERIVED || ts->type == BT_DERIVED) | |
716da296 | 5572 | gfc_error ("Type declaration %qs at %L is not C " |
c5d33754 | 5573 | "interoperable but it is BIND(C)", |
5574 | tmp_sym->name, &(tmp_sym->declared_at)); | |
bf79c656 | 5575 | else if (warn_c_binding_type) |
4166acc7 | 5576 | gfc_warning (OPT_Wc_binding_type, "Variable %qs at %L " |
c5d33754 | 5577 | "may not be a C interoperable " |
716da296 | 5578 | "kind but it is BIND(C)", |
c5d33754 | 5579 | tmp_sym->name, &(tmp_sym->declared_at)); |
5580 | } | |
5581 | } | |
8db94b3b | 5582 | |
c5d33754 | 5583 | /* Variables declared w/in a common block can't be bind(c) |
5584 | since there's no way for C to see these variables, so there's | |
5585 | semantically no reason for the attribute. */ | |
5586 | if (is_in_common == 1 && tmp_sym->attr.is_bind_c == 1) | |
5587 | { | |
716da296 | 5588 | gfc_error ("Variable %qs in common block %qs at " |
c5d33754 | 5589 | "%L cannot be declared with BIND(C) " |
5590 | "since it is not a global", | |
5591 | tmp_sym->name, com_block->name, | |
5592 | &(tmp_sym->declared_at)); | |
60e19868 | 5593 | retval = false; |
c5d33754 | 5594 | } |
8db94b3b | 5595 | |
c5d33754 | 5596 | /* Scalar variables that are bind(c) can not have the pointer |
5597 | or allocatable attributes. */ | |
5598 | if (tmp_sym->attr.is_bind_c == 1) | |
5599 | { | |
5600 | if (tmp_sym->attr.pointer == 1) | |
5601 | { | |
716da296 | 5602 | gfc_error ("Variable %qs at %L cannot have both the " |
c5d33754 | 5603 | "POINTER and BIND(C) attributes", |
5604 | tmp_sym->name, &(tmp_sym->declared_at)); | |
60e19868 | 5605 | retval = false; |
c5d33754 | 5606 | } |
5607 | ||
5608 | if (tmp_sym->attr.allocatable == 1) | |
5609 | { | |
716da296 | 5610 | gfc_error ("Variable %qs at %L cannot have both the " |
c5d33754 | 5611 | "ALLOCATABLE and BIND(C) attributes", |
5612 | tmp_sym->name, &(tmp_sym->declared_at)); | |
60e19868 | 5613 | retval = false; |
c5d33754 | 5614 | } |
5615 | ||
1f2ab120 | 5616 | } |
5617 | ||
5618 | /* If it is a BIND(C) function, make sure the return value is a | |
5619 | scalar value. The previous tests in this function made sure | |
5620 | the type is interoperable. */ | |
5621 | if (bind_c_function && tmp_sym->as != NULL) | |
716da296 | 5622 | gfc_error ("Return type of BIND(C) function %qs at %L cannot " |
1f2ab120 | 5623 | "be an array", tmp_sym->name, &(tmp_sym->declared_at)); |
5624 | ||
5625 | /* BIND(C) functions can not return a character string. */ | |
5626 | if (bind_c_function && tmp_sym->ts.type == BT_CHARACTER) | |
eeebe20b | 5627 | if (tmp_sym->ts.u.cl == NULL || tmp_sym->ts.u.cl->length == NULL |
5628 | || tmp_sym->ts.u.cl->length->expr_type != EXPR_CONSTANT | |
5629 | || mpz_cmp_si (tmp_sym->ts.u.cl->length->value.integer, 1) != 0) | |
716da296 | 5630 | gfc_error ("Return type of BIND(C) function %qs at %L cannot " |
c5d33754 | 5631 | "be a character string", tmp_sym->name, |
5632 | &(tmp_sym->declared_at)); | |
c5d33754 | 5633 | } |
5634 | ||
5635 | /* See if the symbol has been marked as private. If it has, make sure | |
5636 | there is no binding label and warn the user if there is one. */ | |
5637 | if (tmp_sym->attr.access == ACCESS_PRIVATE | |
7b2060ba | 5638 | && tmp_sym->binding_label) |
c5d33754 | 5639 | /* Use gfc_warning_now because we won't say that the symbol fails |
5640 | just because of this. */ | |
6f521718 | 5641 | gfc_warning_now (0, "Symbol %qs at %L is marked PRIVATE but has been " |
bf79c656 | 5642 | "given the binding label %qs", tmp_sym->name, |
c5d33754 | 5643 | &(tmp_sym->declared_at), tmp_sym->binding_label); |
5644 | ||
5645 | return retval; | |
5646 | } | |
5647 | ||
5648 | ||
5649 | /* Set the appropriate fields for a symbol that's been declared as | |
5650 | BIND(C) (the is_bind_c flag and the binding label), and verify that | |
5651 | the type is C interoperable. Errors are reported by the functions | |
5652 | used to set/test these fields. */ | |
5653 | ||
60e19868 | 5654 | bool |
c5d33754 | 5655 | set_verify_bind_c_sym (gfc_symbol *tmp_sym, int num_idents) |
5656 | { | |
60e19868 | 5657 | bool retval = true; |
8db94b3b | 5658 | |
c5d33754 | 5659 | /* TODO: Do we need to make sure the vars aren't marked private? */ |
5660 | ||
5661 | /* Set the is_bind_c bit in symbol_attribute. */ | |
5662 | gfc_add_is_bind_c (&(tmp_sym->attr), tmp_sym->name, &gfc_current_locus, 0); | |
5663 | ||
60e19868 | 5664 | if (!set_binding_label (&tmp_sym->binding_label, tmp_sym->name, num_idents)) |
5665 | return false; | |
c5d33754 | 5666 | |
5667 | return retval; | |
5668 | } | |
5669 | ||
5670 | ||
5671 | /* Set the fields marking the given common block as BIND(C), including | |
5672 | a binding label, and report any errors encountered. */ | |
5673 | ||
60e19868 | 5674 | bool |
c5d33754 | 5675 | set_verify_bind_c_com_block (gfc_common_head *com_block, int num_idents) |
5676 | { | |
60e19868 | 5677 | bool retval = true; |
8db94b3b | 5678 | |
c5d33754 | 5679 | /* destLabel, common name, typespec (which may have binding label). */ |
76e207a9 | 5680 | if (!set_binding_label (&com_block->binding_label, com_block->name, |
60e19868 | 5681 | num_idents)) |
5682 | return false; | |
c5d33754 | 5683 | |
5684 | /* Set the given common block (com_block) to being bind(c) (1). */ | |
5685 | set_com_block_bind_c (com_block, 1); | |
5686 | ||
5687 | return retval; | |
5688 | } | |
5689 | ||
5690 | ||
5691 | /* Retrieve the list of one or more identifiers that the given bind(c) | |
5692 | attribute applies to. */ | |
5693 | ||
60e19868 | 5694 | bool |
c5d33754 | 5695 | get_bind_c_idents (void) |
5696 | { | |
5697 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
5698 | int num_idents = 0; | |
5699 | gfc_symbol *tmp_sym = NULL; | |
5700 | match found_id; | |
5701 | gfc_common_head *com_block = NULL; | |
8db94b3b | 5702 | |
c5d33754 | 5703 | if (gfc_match_name (name) == MATCH_YES) |
5704 | { | |
5705 | found_id = MATCH_YES; | |
5706 | gfc_get_ha_symbol (name, &tmp_sym); | |
5707 | } | |
5708 | else if (match_common_name (name) == MATCH_YES) | |
5709 | { | |
5710 | found_id = MATCH_YES; | |
5711 | com_block = gfc_get_common (name, 0); | |
5712 | } | |
5713 | else | |
5714 | { | |
5715 | gfc_error ("Need either entity or common block name for " | |
5716 | "attribute specification statement at %C"); | |
60e19868 | 5717 | return false; |
c5d33754 | 5718 | } |
8db94b3b | 5719 | |
c5d33754 | 5720 | /* Save the current identifier and look for more. */ |
5721 | do | |
5722 | { | |
5723 | /* Increment the number of identifiers found for this spec stmt. */ | |
5724 | num_idents++; | |
5725 | ||
5726 | /* Make sure we have a sym or com block, and verify that it can | |
5727 | be bind(c). Set the appropriate field(s) and look for more | |
5728 | identifiers. */ | |
8db94b3b | 5729 | if (tmp_sym != NULL || com_block != NULL) |
c5d33754 | 5730 | { |
5731 | if (tmp_sym != NULL) | |
5732 | { | |
60e19868 | 5733 | if (!set_verify_bind_c_sym (tmp_sym, num_idents)) |
5734 | return false; | |
c5d33754 | 5735 | } |
5736 | else | |
5737 | { | |
60e19868 | 5738 | if (!set_verify_bind_c_com_block (com_block, num_idents)) |
5739 | return false; | |
c5d33754 | 5740 | } |
8db94b3b | 5741 | |
c5d33754 | 5742 | /* Look to see if we have another identifier. */ |
5743 | tmp_sym = NULL; | |
5744 | if (gfc_match_eos () == MATCH_YES) | |
5745 | found_id = MATCH_NO; | |
5746 | else if (gfc_match_char (',') != MATCH_YES) | |
5747 | found_id = MATCH_NO; | |
5748 | else if (gfc_match_name (name) == MATCH_YES) | |
5749 | { | |
5750 | found_id = MATCH_YES; | |
5751 | gfc_get_ha_symbol (name, &tmp_sym); | |
5752 | } | |
5753 | else if (match_common_name (name) == MATCH_YES) | |
5754 | { | |
5755 | found_id = MATCH_YES; | |
5756 | com_block = gfc_get_common (name, 0); | |
5757 | } | |
5758 | else | |
5759 | { | |
5760 | gfc_error ("Missing entity or common block name for " | |
5761 | "attribute specification statement at %C"); | |
60e19868 | 5762 | return false; |
c5d33754 | 5763 | } |
5764 | } | |
5765 | else | |
5766 | { | |
5767 | gfc_internal_error ("Missing symbol"); | |
5768 | } | |
5769 | } while (found_id == MATCH_YES); | |
5770 | ||
5771 | /* if we get here we were successful */ | |
60e19868 | 5772 | return true; |
c5d33754 | 5773 | } |
5774 | ||
5775 | ||
5776 | /* Try and match a BIND(C) attribute specification statement. */ | |
8db94b3b | 5777 | |
c5d33754 | 5778 | match |
5779 | gfc_match_bind_c_stmt (void) | |
5780 | { | |
5781 | match found_match = MATCH_NO; | |
5782 | gfc_typespec *ts; | |
5783 | ||
5784 | ts = ¤t_ts; | |
8db94b3b | 5785 | |
c5d33754 | 5786 | /* This may not be necessary. */ |
5787 | gfc_clear_ts (ts); | |
5788 | /* Clear the temporary binding label holder. */ | |
7b2060ba | 5789 | curr_binding_label = NULL; |
c5d33754 | 5790 | |
5791 | /* Look for the bind(c). */ | |
75ae7f6c | 5792 | found_match = gfc_match_bind_c (NULL, true); |
c5d33754 | 5793 | |
5794 | if (found_match == MATCH_YES) | |
5795 | { | |
7a914593 | 5796 | if (!gfc_notify_std (GFC_STD_F2003, "BIND(C) statement at %C")) |
5797 | return MATCH_ERROR; | |
5798 | ||
c5d33754 | 5799 | /* Look for the :: now, but it is not required. */ |
5800 | gfc_match (" :: "); | |
5801 | ||
5802 | /* Get the identifier(s) that needs to be updated. This may need to | |
5803 | change to hand the flag(s) for the attr specified so all identifiers | |
5804 | found can have all appropriate parts updated (assuming that the same | |
5805 | spec stmt can have multiple attrs, such as both bind(c) and | |
5806 | allocatable...). */ | |
60e19868 | 5807 | if (!get_bind_c_idents ()) |
c5d33754 | 5808 | /* Error message should have printed already. */ |
5809 | return MATCH_ERROR; | |
5810 | } | |
5811 | ||
5812 | return found_match; | |
5813 | } | |
5814 | ||
5815 | ||
4ee9c684 | 5816 | /* Match a data declaration statement. */ |
5817 | ||
5818 | match | |
5819 | gfc_match_data_decl (void) | |
5820 | { | |
5821 | gfc_symbol *sym; | |
5822 | match m; | |
3923b69f | 5823 | int elem; |
4ee9c684 | 5824 | |
9d958d5b | 5825 | type_param_spec_list = NULL; |
5826 | decl_type_param_list = NULL; | |
5827 | ||
c5d33754 | 5828 | num_idents_on_line = 0; |
8db94b3b | 5829 | |
e8152f13 | 5830 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
4ee9c684 | 5831 | if (m != MATCH_YES) |
5832 | return m; | |
5833 | ||
b3704193 | 5834 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
d7cd448a | 5835 | && !gfc_comp_struct (gfc_current_state ())) |
4ee9c684 | 5836 | { |
eeebe20b | 5837 | sym = gfc_use_derived (current_ts.u.derived); |
4ee9c684 | 5838 | |
5839 | if (sym == NULL) | |
5840 | { | |
5841 | m = MATCH_ERROR; | |
5842 | goto cleanup; | |
5843 | } | |
5844 | ||
eeebe20b | 5845 | current_ts.u.derived = sym; |
4ee9c684 | 5846 | } |
5847 | ||
5848 | m = match_attr_spec (); | |
5849 | if (m == MATCH_ERROR) | |
5850 | { | |
5851 | m = MATCH_NO; | |
5852 | goto cleanup; | |
5853 | } | |
5854 | ||
a90fe829 | 5855 | if (current_ts.type == BT_CLASS |
5856 | && current_ts.u.derived->attr.unlimited_polymorphic) | |
5857 | goto ok; | |
5858 | ||
b3704193 | 5859 | if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS) |
5860 | && current_ts.u.derived->components == NULL | |
eeebe20b | 5861 | && !current_ts.u.derived->attr.zero_comp) |
4ee9c684 | 5862 | { |
5863 | ||
d7cd448a | 5864 | if (current_attr.pointer && gfc_comp_struct (gfc_current_state ())) |
4ee9c684 | 5865 | goto ok; |
5866 | ||
2fbfb5cf | 5867 | if (current_attr.allocatable && gfc_current_state () == COMP_DERIVED) |
dd7553fe | 5868 | goto ok; |
5869 | ||
eeebe20b | 5870 | gfc_find_symbol (current_ts.u.derived->name, |
d67dd34f | 5871 | current_ts.u.derived->ns, 1, &sym); |
4ee9c684 | 5872 | |
40cf8078 | 5873 | /* Any symbol that we find had better be a type definition |
d7cd448a | 5874 | which has its components defined, or be a structure definition |
5875 | actively being parsed. */ | |
5876 | if (sym != NULL && gfc_fl_struct (sym->attr.flavor) | |
eeebe20b | 5877 | && (current_ts.u.derived->components != NULL |
d7cd448a | 5878 | || current_ts.u.derived->attr.zero_comp |
5879 | || current_ts.u.derived == gfc_new_block)) | |
4ee9c684 | 5880 | goto ok; |
5881 | ||
a1e76cd9 | 5882 | gfc_error ("Derived type at %C has not been previously defined " |
5883 | "and so cannot appear in a derived type definition"); | |
5884 | m = MATCH_ERROR; | |
5885 | goto cleanup; | |
4ee9c684 | 5886 | } |
5887 | ||
5888 | ok: | |
5889 | /* If we have an old-style character declaration, and no new-style | |
5890 | attribute specifications, then there a comma is optional between | |
5891 | the type specification and the variable list. */ | |
5892 | if (m == MATCH_NO && current_ts.type == BT_CHARACTER && old_char_selector) | |
5893 | gfc_match_char (','); | |
5894 | ||
3923b69f | 5895 | /* Give the types/attributes to symbols that follow. Give the element |
5896 | a number so that repeat character length expressions can be copied. */ | |
5897 | elem = 1; | |
4ee9c684 | 5898 | for (;;) |
5899 | { | |
c5d33754 | 5900 | num_idents_on_line++; |
3923b69f | 5901 | m = variable_decl (elem++); |
4ee9c684 | 5902 | if (m == MATCH_ERROR) |
5903 | goto cleanup; | |
5904 | if (m == MATCH_NO) | |
5905 | break; | |
5906 | ||
5907 | if (gfc_match_eos () == MATCH_YES) | |
5908 | goto cleanup; | |
5909 | if (gfc_match_char (',') != MATCH_YES) | |
5910 | break; | |
5911 | } | |
5912 | ||
389e3a5e | 5913 | if (!gfc_error_flag_test ()) |
c717a688 | 5914 | { |
5915 | /* An anonymous structure declaration is unambiguous; if we matched one | |
5916 | according to gfc_match_structure_decl, we need to return MATCH_YES | |
5917 | here to avoid confusing the remaining matchers, even if there was an | |
5918 | error during variable_decl. We must flush any such errors. Note this | |
5919 | causes the parser to gracefully continue parsing the remaining input | |
5920 | as a structure body, which likely follows. */ | |
5921 | if (current_ts.type == BT_DERIVED && current_ts.u.derived | |
5922 | && gfc_fl_struct (current_ts.u.derived->attr.flavor)) | |
5923 | { | |
5924 | gfc_error_now ("Syntax error in anonymous structure declaration" | |
5925 | " at %C"); | |
5926 | /* Skip the bad variable_decl and line up for the start of the | |
5927 | structure body. */ | |
5928 | gfc_error_recovery (); | |
5929 | m = MATCH_YES; | |
5930 | goto cleanup; | |
5931 | } | |
5932 | ||
5933 | gfc_error ("Syntax error in data declaration at %C"); | |
5934 | } | |
5935 | ||
4ee9c684 | 5936 | m = MATCH_ERROR; |
5937 | ||
af29c1f0 | 5938 | gfc_free_data_all (gfc_current_ns); |
5939 | ||
4ee9c684 | 5940 | cleanup: |
9d958d5b | 5941 | if (saved_kind_expr) |
5942 | gfc_free_expr (saved_kind_expr); | |
5943 | if (type_param_spec_list) | |
5944 | gfc_free_actual_arglist (type_param_spec_list); | |
5945 | if (decl_type_param_list) | |
5946 | gfc_free_actual_arglist (decl_type_param_list); | |
5947 | saved_kind_expr = NULL; | |
4ee9c684 | 5948 | gfc_free_array_spec (current_as); |
5949 | current_as = NULL; | |
5950 | return m; | |
5951 | } | |
5952 | ||
5953 | ||
5954 | /* Match a prefix associated with a function or subroutine | |
5955 | declaration. If the typespec pointer is nonnull, then a typespec | |
5956 | can be matched. Note that if nothing matches, MATCH_YES is | |
5957 | returned (the null string was matched). */ | |
5958 | ||
077932f9 | 5959 | match |
5960 | gfc_match_prefix (gfc_typespec *ts) | |
4ee9c684 | 5961 | { |
5b11d932 | 5962 | bool seen_type; |
4e4ea00b | 5963 | bool seen_impure; |
5964 | bool found_prefix; | |
4ee9c684 | 5965 | |
5966 | gfc_clear_attr (¤t_attr); | |
4e4ea00b | 5967 | seen_type = false; |
5968 | seen_impure = false; | |
4ee9c684 | 5969 | |
d1645c7b | 5970 | gcc_assert (!gfc_matching_prefix); |
5971 | gfc_matching_prefix = true; | |
40de255b | 5972 | |
4e4ea00b | 5973 | do |
4ee9c684 | 5974 | { |
4e4ea00b | 5975 | found_prefix = false; |
4ee9c684 | 5976 | |
76e207a9 | 5977 | /* MODULE is a prefix like PURE, ELEMENTAL, etc., having a |
5978 | corresponding attribute seems natural and distinguishes these | |
5979 | procedures from procedure types of PROC_MODULE, which these are | |
5980 | as well. */ | |
5981 | if (gfc_match ("module% ") == MATCH_YES) | |
5982 | { | |
5983 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE prefix at %C")) | |
5984 | goto error; | |
5985 | ||
5986 | current_attr.module_procedure = 1; | |
5987 | found_prefix = true; | |
5988 | } | |
5989 | ||
4e4ea00b | 5990 | if (!seen_type && ts != NULL |
5991 | && gfc_match_decl_type_spec (ts, 0) == MATCH_YES | |
5992 | && gfc_match_space () == MATCH_YES) | |
5993 | { | |
4ee9c684 | 5994 | |
4e4ea00b | 5995 | seen_type = true; |
5996 | found_prefix = true; | |
5997 | } | |
5998 | ||
5999 | if (gfc_match ("elemental% ") == MATCH_YES) | |
6000 | { | |
60e19868 | 6001 | if (!gfc_add_elemental (¤t_attr, NULL)) |
4e4ea00b | 6002 | goto error; |
6003 | ||
6004 | found_prefix = true; | |
6005 | } | |
6006 | ||
6007 | if (gfc_match ("pure% ") == MATCH_YES) | |
6008 | { | |
60e19868 | 6009 | if (!gfc_add_pure (¤t_attr, NULL)) |
4e4ea00b | 6010 | goto error; |
6011 | ||
6012 | found_prefix = true; | |
6013 | } | |
4ee9c684 | 6014 | |
4e4ea00b | 6015 | if (gfc_match ("recursive% ") == MATCH_YES) |
6016 | { | |
60e19868 | 6017 | if (!gfc_add_recursive (¤t_attr, NULL)) |
4e4ea00b | 6018 | goto error; |
6019 | ||
6020 | found_prefix = true; | |
6021 | } | |
6022 | ||
6023 | /* IMPURE is a somewhat special case, as it needs not set an actual | |
6024 | attribute but rather only prevents ELEMENTAL routines from being | |
6025 | automatically PURE. */ | |
6026 | if (gfc_match ("impure% ") == MATCH_YES) | |
6027 | { | |
60e19868 | 6028 | if (!gfc_notify_std (GFC_STD_F2008, "IMPURE procedure at %C")) |
4e4ea00b | 6029 | goto error; |
6030 | ||
6031 | seen_impure = true; | |
6032 | found_prefix = true; | |
6033 | } | |
4ee9c684 | 6034 | } |
4e4ea00b | 6035 | while (found_prefix); |
4ee9c684 | 6036 | |
4e4ea00b | 6037 | /* IMPURE and PURE must not both appear, of course. */ |
6038 | if (seen_impure && current_attr.pure) | |
4ee9c684 | 6039 | { |
4e4ea00b | 6040 | gfc_error ("PURE and IMPURE must not appear both at %C"); |
6041 | goto error; | |
4ee9c684 | 6042 | } |
6043 | ||
4e4ea00b | 6044 | /* If IMPURE it not seen but the procedure is ELEMENTAL, mark it as PURE. */ |
6045 | if (!seen_impure && current_attr.elemental && !current_attr.pure) | |
4ee9c684 | 6046 | { |
60e19868 | 6047 | if (!gfc_add_pure (¤t_attr, NULL)) |
40de255b | 6048 | goto error; |
4ee9c684 | 6049 | } |
6050 | ||
6051 | /* At this point, the next item is not a prefix. */ | |
d1645c7b | 6052 | gcc_assert (gfc_matching_prefix); |
4b8eb6ca | 6053 | |
d1645c7b | 6054 | gfc_matching_prefix = false; |
4ee9c684 | 6055 | return MATCH_YES; |
40de255b | 6056 | |
6057 | error: | |
d1645c7b | 6058 | gcc_assert (gfc_matching_prefix); |
6059 | gfc_matching_prefix = false; | |
40de255b | 6060 | return MATCH_ERROR; |
4ee9c684 | 6061 | } |
6062 | ||
6063 | ||
077932f9 | 6064 | /* Copy attributes matched by gfc_match_prefix() to attributes on a symbol. */ |
4ee9c684 | 6065 | |
60e19868 | 6066 | static bool |
1a9745d2 | 6067 | copy_prefix (symbol_attribute *dest, locus *where) |
4ee9c684 | 6068 | { |
7d7125df | 6069 | if (dest->module_procedure) |
6070 | { | |
6071 | if (current_attr.elemental) | |
6072 | dest->elemental = 1; | |
6073 | ||
6074 | if (current_attr.pure) | |
6075 | dest->pure = 1; | |
6076 | ||
6077 | if (current_attr.recursive) | |
6078 | dest->recursive = 1; | |
6079 | ||
6080 | /* Module procedures are unusual in that the 'dest' is copied from | |
6081 | the interface declaration. However, this is an oportunity to | |
6082 | check that the submodule declaration is compliant with the | |
6083 | interface. */ | |
6084 | if (dest->elemental && !current_attr.elemental) | |
6085 | { | |
6086 | gfc_error ("ELEMENTAL prefix in MODULE PROCEDURE interface is " | |
6087 | "missing at %L", where); | |
6088 | return false; | |
6089 | } | |
6090 | ||
6091 | if (dest->pure && !current_attr.pure) | |
6092 | { | |
6093 | gfc_error ("PURE prefix in MODULE PROCEDURE interface is " | |
6094 | "missing at %L", where); | |
6095 | return false; | |
6096 | } | |
6097 | ||
6098 | if (dest->recursive && !current_attr.recursive) | |
6099 | { | |
6100 | gfc_error ("RECURSIVE prefix in MODULE PROCEDURE interface is " | |
6101 | "missing at %L", where); | |
6102 | return false; | |
6103 | } | |
6104 | ||
6105 | return true; | |
6106 | } | |
4ee9c684 | 6107 | |
60e19868 | 6108 | if (current_attr.elemental && !gfc_add_elemental (dest, where)) |
6109 | return false; | |
4ee9c684 | 6110 | |
7d7125df | 6111 | if (current_attr.pure && !gfc_add_pure (dest, where)) |
6112 | return false; | |
6113 | ||
60e19868 | 6114 | if (current_attr.recursive && !gfc_add_recursive (dest, where)) |
6115 | return false; | |
4ee9c684 | 6116 | |
60e19868 | 6117 | return true; |
4ee9c684 | 6118 | } |
6119 | ||
6120 | ||
9d958d5b | 6121 | /* Match a formal argument list or, if typeparam is true, a |
6122 | type_param_name_list. */ | |
4ee9c684 | 6123 | |
6124 | match | |
9d958d5b | 6125 | gfc_match_formal_arglist (gfc_symbol *progname, int st_flag, |
6126 | int null_flag, bool typeparam) | |
4ee9c684 | 6127 | { |
6128 | gfc_formal_arglist *head, *tail, *p, *q; | |
6129 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6130 | gfc_symbol *sym; | |
6131 | match m; | |
4b8eb6ca | 6132 | gfc_formal_arglist *formal = NULL; |
4ee9c684 | 6133 | |
6134 | head = tail = NULL; | |
6135 | ||
4b8eb6ca | 6136 | /* Keep the interface formal argument list and null it so that the |
6137 | matching for the new declaration can be done. The numbers and | |
6138 | names of the arguments are checked here. The interface formal | |
6139 | arguments are retained in formal_arglist and the characteristics | |
6140 | are compared in resolve.c(resolve_fl_procedure). See the remark | |
6141 | in get_proc_name about the eventual need to copy the formal_arglist | |
6142 | and populate the formal namespace of the interface symbol. */ | |
6143 | if (progname->attr.module_procedure | |
6144 | && progname->attr.host_assoc) | |
6145 | { | |
6146 | formal = progname->formal; | |
6147 | progname->formal = NULL; | |
6148 | } | |
6149 | ||
4ee9c684 | 6150 | if (gfc_match_char ('(') != MATCH_YES) |
6151 | { | |
6152 | if (null_flag) | |
6153 | goto ok; | |
6154 | return MATCH_NO; | |
6155 | } | |
6156 | ||
6157 | if (gfc_match_char (')') == MATCH_YES) | |
6158 | goto ok; | |
6159 | ||
6160 | for (;;) | |
6161 | { | |
6162 | if (gfc_match_char ('*') == MATCH_YES) | |
a5d831e5 | 6163 | { |
6164 | sym = NULL; | |
f0efd2e8 | 6165 | if (!typeparam && !gfc_notify_std (GFC_STD_F95_OBS, |
6166 | "Alternate-return argument at %C")) | |
a5d831e5 | 6167 | { |
6168 | m = MATCH_ERROR; | |
6169 | goto cleanup; | |
6170 | } | |
f0efd2e8 | 6171 | else if (typeparam) |
6172 | gfc_error_now ("A parameter name is required at %C"); | |
a5d831e5 | 6173 | } |
4ee9c684 | 6174 | else |
6175 | { | |
6176 | m = gfc_match_name (name); | |
6177 | if (m != MATCH_YES) | |
f0efd2e8 | 6178 | { |
6179 | if(typeparam) | |
6180 | gfc_error_now ("A parameter name is required at %C"); | |
6181 | goto cleanup; | |
6182 | } | |
4ee9c684 | 6183 | |
9d958d5b | 6184 | if (!typeparam && gfc_get_symbol (name, NULL, &sym)) |
6185 | goto cleanup; | |
6186 | else if (typeparam | |
6187 | && gfc_get_symbol (name, progname->f2k_derived, &sym)) | |
4ee9c684 | 6188 | goto cleanup; |
6189 | } | |
6190 | ||
6191 | p = gfc_get_formal_arglist (); | |
6192 | ||
6193 | if (head == NULL) | |
6194 | head = tail = p; | |
6195 | else | |
6196 | { | |
6197 | tail->next = p; | |
6198 | tail = p; | |
6199 | } | |
6200 | ||
6201 | tail->sym = sym; | |
6202 | ||
6203 | /* We don't add the VARIABLE flavor because the name could be a | |
1a9745d2 | 6204 | dummy procedure. We don't apply these attributes to formal |
6205 | arguments of statement functions. */ | |
4ee9c684 | 6206 | if (sym != NULL && !st_flag |
60e19868 | 6207 | && (!gfc_add_dummy(&sym->attr, sym->name, NULL) |
6208 | || !gfc_missing_attr (&sym->attr, NULL))) | |
4ee9c684 | 6209 | { |
6210 | m = MATCH_ERROR; | |
6211 | goto cleanup; | |
6212 | } | |
6213 | ||
6214 | /* The name of a program unit can be in a different namespace, | |
1a9745d2 | 6215 | so check for it explicitly. After the statement is accepted, |
6216 | the name is checked for especially in gfc_get_symbol(). */ | |
1148eb54 | 6217 | if (gfc_new_block != NULL && sym != NULL && !typeparam |
4ee9c684 | 6218 | && strcmp (sym->name, gfc_new_block->name) == 0) |
6219 | { | |
716da296 | 6220 | gfc_error ("Name %qs at %C is the name of the procedure", |
4ee9c684 | 6221 | sym->name); |
6222 | m = MATCH_ERROR; | |
6223 | goto cleanup; | |
6224 | } | |
6225 | ||
6226 | if (gfc_match_char (')') == MATCH_YES) | |
6227 | goto ok; | |
6228 | ||
6229 | m = gfc_match_char (','); | |
6230 | if (m != MATCH_YES) | |
6231 | { | |
1148eb54 | 6232 | if (typeparam) |
6233 | gfc_error_now ("Expected parameter list in type declaration " | |
6234 | "at %C"); | |
6235 | else | |
6236 | gfc_error ("Unexpected junk in formal argument list at %C"); | |
4ee9c684 | 6237 | goto cleanup; |
6238 | } | |
6239 | } | |
6240 | ||
6241 | ok: | |
6242 | /* Check for duplicate symbols in the formal argument list. */ | |
6243 | if (head != NULL) | |
6244 | { | |
6245 | for (p = head; p->next; p = p->next) | |
6246 | { | |
6247 | if (p->sym == NULL) | |
6248 | continue; | |
6249 | ||
6250 | for (q = p->next; q; q = q->next) | |
6251 | if (p->sym == q->sym) | |
6252 | { | |
1148eb54 | 6253 | if (typeparam) |
6254 | gfc_error_now ("Duplicate name %qs in parameter " | |
6255 | "list at %C", p->sym->name); | |
6256 | else | |
6257 | gfc_error ("Duplicate symbol %qs in formal argument " | |
6258 | "list at %C", p->sym->name); | |
4ee9c684 | 6259 | |
6260 | m = MATCH_ERROR; | |
6261 | goto cleanup; | |
6262 | } | |
6263 | } | |
6264 | } | |
6265 | ||
60e19868 | 6266 | if (!gfc_add_explicit_interface (progname, IFSRC_DECL, head, NULL)) |
4ee9c684 | 6267 | { |
6268 | m = MATCH_ERROR; | |
6269 | goto cleanup; | |
6270 | } | |
6271 | ||
cc78610f | 6272 | /* gfc_error_now used in following and return with MATCH_YES because |
6273 | doing otherwise results in a cascade of extraneous errors and in | |
6274 | some cases an ICE in symbol.c(gfc_release_symbol). */ | |
a23f57e2 | 6275 | if (progname->attr.module_procedure && progname->attr.host_assoc) |
4b8eb6ca | 6276 | { |
a23f57e2 | 6277 | bool arg_count_mismatch = false; |
6278 | ||
6279 | if (!formal && head) | |
6280 | arg_count_mismatch = true; | |
6281 | ||
6282 | /* Abbreviated module procedure declaration is not meant to have any | |
6283 | formal arguments! */ | |
cc78610f | 6284 | if (!progname->abr_modproc_decl && formal && !head) |
a23f57e2 | 6285 | arg_count_mismatch = true; |
6286 | ||
4b8eb6ca | 6287 | for (p = formal, q = head; p && q; p = p->next, q = q->next) |
6288 | { | |
6289 | if ((p->next != NULL && q->next == NULL) | |
6290 | || (p->next == NULL && q->next != NULL)) | |
a23f57e2 | 6291 | arg_count_mismatch = true; |
4b8eb6ca | 6292 | else if ((p->sym == NULL && q->sym == NULL) |
6293 | || strcmp (p->sym->name, q->sym->name) == 0) | |
6294 | continue; | |
6295 | else | |
6296 | gfc_error_now ("Mismatch in MODULE PROCEDURE formal " | |
6297 | "argument names (%s/%s) at %C", | |
6298 | p->sym->name, q->sym->name); | |
6299 | } | |
a23f57e2 | 6300 | |
6301 | if (arg_count_mismatch) | |
6302 | gfc_error_now ("Mismatch in number of MODULE PROCEDURE " | |
6303 | "formal arguments at %C"); | |
4b8eb6ca | 6304 | } |
6305 | ||
4ee9c684 | 6306 | return MATCH_YES; |
6307 | ||
6308 | cleanup: | |
6309 | gfc_free_formal_arglist (head); | |
6310 | return m; | |
6311 | } | |
6312 | ||
6313 | ||
6314 | /* Match a RESULT specification following a function declaration or | |
6315 | ENTRY statement. Also matches the end-of-statement. */ | |
6316 | ||
6317 | static match | |
f6d0e37a | 6318 | match_result (gfc_symbol *function, gfc_symbol **result) |
4ee9c684 | 6319 | { |
6320 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6321 | gfc_symbol *r; | |
6322 | match m; | |
6323 | ||
6324 | if (gfc_match (" result (") != MATCH_YES) | |
6325 | return MATCH_NO; | |
6326 | ||
6327 | m = gfc_match_name (name); | |
6328 | if (m != MATCH_YES) | |
6329 | return m; | |
6330 | ||
c5d33754 | 6331 | /* Get the right paren, and that's it because there could be the |
6332 | bind(c) attribute after the result clause. */ | |
60e19868 | 6333 | if (gfc_match_char (')') != MATCH_YES) |
4ee9c684 | 6334 | { |
c5d33754 | 6335 | /* TODO: should report the missing right paren here. */ |
4ee9c684 | 6336 | return MATCH_ERROR; |
6337 | } | |
6338 | ||
6339 | if (strcmp (function->name, name) == 0) | |
6340 | { | |
1a9745d2 | 6341 | gfc_error ("RESULT variable at %C must be different than function name"); |
4ee9c684 | 6342 | return MATCH_ERROR; |
6343 | } | |
6344 | ||
6345 | if (gfc_get_symbol (name, NULL, &r)) | |
6346 | return MATCH_ERROR; | |
6347 | ||
60e19868 | 6348 | if (!gfc_add_result (&r->attr, r->name, NULL)) |
4ee9c684 | 6349 | return MATCH_ERROR; |
6350 | ||
6351 | *result = r; | |
6352 | ||
6353 | return MATCH_YES; | |
6354 | } | |
6355 | ||
6356 | ||
c5d33754 | 6357 | /* Match a function suffix, which could be a combination of a result |
6358 | clause and BIND(C), either one, or neither. The draft does not | |
6359 | require them to come in a specific order. */ | |
6360 | ||
6361 | match | |
6362 | gfc_match_suffix (gfc_symbol *sym, gfc_symbol **result) | |
6363 | { | |
6364 | match is_bind_c; /* Found bind(c). */ | |
6365 | match is_result; /* Found result clause. */ | |
6366 | match found_match; /* Status of whether we've found a good match. */ | |
e0be6f02 | 6367 | char peek_char; /* Character we're going to peek at. */ |
75ae7f6c | 6368 | bool allow_binding_name; |
c5d33754 | 6369 | |
6370 | /* Initialize to having found nothing. */ | |
6371 | found_match = MATCH_NO; | |
8db94b3b | 6372 | is_bind_c = MATCH_NO; |
c5d33754 | 6373 | is_result = MATCH_NO; |
6374 | ||
6375 | /* Get the next char to narrow between result and bind(c). */ | |
6376 | gfc_gobble_whitespace (); | |
e0be6f02 | 6377 | peek_char = gfc_peek_ascii_char (); |
c5d33754 | 6378 | |
75ae7f6c | 6379 | /* C binding names are not allowed for internal procedures. */ |
6380 | if (gfc_current_state () == COMP_CONTAINS | |
6381 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
6382 | allow_binding_name = false; | |
6383 | else | |
6384 | allow_binding_name = true; | |
6385 | ||
c5d33754 | 6386 | switch (peek_char) |
6387 | { | |
6388 | case 'r': | |
6389 | /* Look for result clause. */ | |
6390 | is_result = match_result (sym, result); | |
6391 | if (is_result == MATCH_YES) | |
6392 | { | |
6393 | /* Now see if there is a bind(c) after it. */ | |
75ae7f6c | 6394 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
c5d33754 | 6395 | /* We've found the result clause and possibly bind(c). */ |
6396 | found_match = MATCH_YES; | |
6397 | } | |
6398 | else | |
6399 | /* This should only be MATCH_ERROR. */ | |
8db94b3b | 6400 | found_match = is_result; |
c5d33754 | 6401 | break; |
6402 | case 'b': | |
6403 | /* Look for bind(c) first. */ | |
75ae7f6c | 6404 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
c5d33754 | 6405 | if (is_bind_c == MATCH_YES) |
6406 | { | |
6407 | /* Now see if a result clause followed it. */ | |
6408 | is_result = match_result (sym, result); | |
6409 | found_match = MATCH_YES; | |
6410 | } | |
6411 | else | |
6412 | { | |
6413 | /* Should only be a MATCH_ERROR if we get here after seeing 'b'. */ | |
6414 | found_match = MATCH_ERROR; | |
6415 | } | |
6416 | break; | |
6417 | default: | |
6418 | gfc_error ("Unexpected junk after function declaration at %C"); | |
6419 | found_match = MATCH_ERROR; | |
6420 | break; | |
6421 | } | |
6422 | ||
c5d33754 | 6423 | if (is_bind_c == MATCH_YES) |
4518e961 | 6424 | { |
75ae7f6c | 6425 | /* Fortran 2008 draft allows BIND(C) for internal procedures. */ |
4518e961 | 6426 | if (gfc_current_state () == COMP_CONTAINS |
75ae7f6c | 6427 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
60e19868 | 6428 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
6429 | "at %L may not be specified for an internal " | |
6430 | "procedure", &gfc_current_locus)) | |
75ae7f6c | 6431 | return MATCH_ERROR; |
6432 | ||
60e19868 | 6433 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, &gfc_current_locus, 1)) |
4518e961 | 6434 | return MATCH_ERROR; |
6435 | } | |
8db94b3b | 6436 | |
c5d33754 | 6437 | return found_match; |
6438 | } | |
6439 | ||
6440 | ||
1e057e9b | 6441 | /* Procedure pointer return value without RESULT statement: |
6442 | Add "hidden" result variable named "ppr@". */ | |
6443 | ||
60e19868 | 6444 | static bool |
1e057e9b | 6445 | add_hidden_procptr_result (gfc_symbol *sym) |
6446 | { | |
6447 | bool case1,case2; | |
6448 | ||
6449 | if (gfc_notification_std (GFC_STD_F2003) == ERROR) | |
60e19868 | 6450 | return false; |
1e057e9b | 6451 | |
6452 | /* First usage case: PROCEDURE and EXTERNAL statements. */ | |
6453 | case1 = gfc_current_state () == COMP_FUNCTION && gfc_current_block () | |
6454 | && strcmp (gfc_current_block ()->name, sym->name) == 0 | |
6455 | && sym->attr.external; | |
6456 | /* Second usage case: INTERFACE statements. */ | |
6457 | case2 = gfc_current_state () == COMP_INTERFACE && gfc_state_stack->previous | |
6458 | && gfc_state_stack->previous->state == COMP_FUNCTION | |
6459 | && strcmp (gfc_state_stack->previous->sym->name, sym->name) == 0; | |
6460 | ||
6461 | if (case1 || case2) | |
6462 | { | |
6463 | gfc_symtree *stree; | |
6464 | if (case1) | |
36b0a1b0 | 6465 | gfc_get_sym_tree ("ppr@", gfc_current_ns, &stree, false); |
f8e5c21b | 6466 | else |
180a5dc0 | 6467 | { |
6468 | gfc_symtree *st2; | |
36b0a1b0 | 6469 | gfc_get_sym_tree ("ppr@", gfc_current_ns->parent, &stree, false); |
180a5dc0 | 6470 | st2 = gfc_new_symtree (&gfc_current_ns->sym_root, "ppr@"); |
6471 | st2->n.sym = stree->n.sym; | |
35ae89b7 | 6472 | stree->n.sym->refs++; |
180a5dc0 | 6473 | } |
1e057e9b | 6474 | sym->result = stree->n.sym; |
6475 | ||
6476 | sym->result->attr.proc_pointer = sym->attr.proc_pointer; | |
6477 | sym->result->attr.pointer = sym->attr.pointer; | |
6478 | sym->result->attr.external = sym->attr.external; | |
6479 | sym->result->attr.referenced = sym->attr.referenced; | |
e40ac2fe | 6480 | sym->result->ts = sym->ts; |
1e057e9b | 6481 | sym->attr.proc_pointer = 0; |
6482 | sym->attr.pointer = 0; | |
6483 | sym->attr.external = 0; | |
6484 | if (sym->result->attr.external && sym->result->attr.pointer) | |
6485 | { | |
6486 | sym->result->attr.pointer = 0; | |
6487 | sym->result->attr.proc_pointer = 1; | |
6488 | } | |
6489 | ||
6490 | return gfc_add_result (&sym->result->attr, sym->result->name, NULL); | |
6491 | } | |
6492 | /* POINTER after PROCEDURE/EXTERNAL/INTERFACE statement. */ | |
6493 | else if (sym->attr.function && !sym->attr.external && sym->attr.pointer | |
6494 | && sym->result && sym->result != sym && sym->result->attr.external | |
6495 | && sym == gfc_current_ns->proc_name | |
6496 | && sym == sym->result->ns->proc_name | |
6497 | && strcmp ("ppr@", sym->result->name) == 0) | |
6498 | { | |
6499 | sym->result->attr.proc_pointer = 1; | |
6500 | sym->attr.pointer = 0; | |
60e19868 | 6501 | return true; |
1e057e9b | 6502 | } |
6503 | else | |
60e19868 | 6504 | return false; |
1e057e9b | 6505 | } |
6506 | ||
6507 | ||
64e93293 | 6508 | /* Match the interface for a PROCEDURE declaration, |
6509 | including brackets (R1212). */ | |
af1a34ee | 6510 | |
6511 | static match | |
64e93293 | 6512 | match_procedure_interface (gfc_symbol **proc_if) |
af1a34ee | 6513 | { |
6514 | match m; | |
1eb2b542 | 6515 | gfc_symtree *st; |
af1a34ee | 6516 | locus old_loc, entry_loc; |
1eb2b542 | 6517 | gfc_namespace *old_ns = gfc_current_ns; |
6518 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
af1a34ee | 6519 | |
1eb2b542 | 6520 | old_loc = entry_loc = gfc_current_locus; |
af1a34ee | 6521 | gfc_clear_ts (¤t_ts); |
6522 | ||
6523 | if (gfc_match (" (") != MATCH_YES) | |
6524 | { | |
6525 | gfc_current_locus = entry_loc; | |
6526 | return MATCH_NO; | |
6527 | } | |
6528 | ||
6529 | /* Get the type spec. for the procedure interface. */ | |
6530 | old_loc = gfc_current_locus; | |
e8152f13 | 6531 | m = gfc_match_decl_type_spec (¤t_ts, 0); |
fd1277c3 | 6532 | gfc_gobble_whitespace (); |
e0be6f02 | 6533 | if (m == MATCH_YES || (m == MATCH_NO && gfc_peek_ascii_char () == ')')) |
af1a34ee | 6534 | goto got_ts; |
6535 | ||
6536 | if (m == MATCH_ERROR) | |
6537 | return m; | |
6538 | ||
1eb2b542 | 6539 | /* Procedure interface is itself a procedure. */ |
af1a34ee | 6540 | gfc_current_locus = old_loc; |
1eb2b542 | 6541 | m = gfc_match_name (name); |
af1a34ee | 6542 | |
1eb2b542 | 6543 | /* First look to see if it is already accessible in the current |
6544 | namespace because it is use associated or contained. */ | |
6545 | st = NULL; | |
6546 | if (gfc_find_sym_tree (name, NULL, 0, &st)) | |
6547 | return MATCH_ERROR; | |
6548 | ||
6549 | /* If it is still not found, then try the parent namespace, if it | |
6550 | exists and create the symbol there if it is still not found. */ | |
6551 | if (gfc_current_ns->parent) | |
6552 | gfc_current_ns = gfc_current_ns->parent; | |
6553 | if (st == NULL && gfc_get_ha_sym_tree (name, &st)) | |
6554 | return MATCH_ERROR; | |
6555 | ||
6556 | gfc_current_ns = old_ns; | |
6557 | *proc_if = st->n.sym; | |
af1a34ee | 6558 | |
64e93293 | 6559 | if (*proc_if) |
af1a34ee | 6560 | { |
64e93293 | 6561 | (*proc_if)->refs++; |
74113644 | 6562 | /* Resolve interface if possible. That way, attr.procedure is only set |
6563 | if it is declared by a later procedure-declaration-stmt, which is | |
87863b31 | 6564 | invalid per F08:C1216 (cf. resolve_procedure_interface). */ |
7e9136f1 | 6565 | while ((*proc_if)->ts.interface |
6566 | && *proc_if != (*proc_if)->ts.interface) | |
64e93293 | 6567 | *proc_if = (*proc_if)->ts.interface; |
74113644 | 6568 | |
87863b31 | 6569 | if ((*proc_if)->attr.flavor == FL_UNKNOWN |
6570 | && (*proc_if)->ts.type == BT_UNKNOWN | |
76e207a9 | 6571 | && !gfc_add_flavor (&(*proc_if)->attr, FL_PROCEDURE, |
60e19868 | 6572 | (*proc_if)->name, NULL)) |
87863b31 | 6573 | return MATCH_ERROR; |
af1a34ee | 6574 | } |
6575 | ||
6576 | got_ts: | |
af1a34ee | 6577 | if (gfc_match (" )") != MATCH_YES) |
6578 | { | |
6579 | gfc_current_locus = entry_loc; | |
6580 | return MATCH_NO; | |
6581 | } | |
6582 | ||
64e93293 | 6583 | return MATCH_YES; |
6584 | } | |
6585 | ||
6586 | ||
6587 | /* Match a PROCEDURE declaration (R1211). */ | |
6588 | ||
6589 | static match | |
6590 | match_procedure_decl (void) | |
6591 | { | |
6592 | match m; | |
6593 | gfc_symbol *sym, *proc_if = NULL; | |
6594 | int num; | |
6595 | gfc_expr *initializer = NULL; | |
6596 | ||
293d72e0 | 6597 | /* Parse interface (with brackets). */ |
64e93293 | 6598 | m = match_procedure_interface (&proc_if); |
6599 | if (m != MATCH_YES) | |
6600 | return m; | |
6601 | ||
6602 | /* Parse attributes (with colons). */ | |
af1a34ee | 6603 | m = match_attr_spec(); |
6604 | if (m == MATCH_ERROR) | |
6605 | return MATCH_ERROR; | |
6606 | ||
caa3ea40 | 6607 | if (proc_if && proc_if->attr.is_bind_c && !current_attr.is_bind_c) |
6608 | { | |
6609 | current_attr.is_bind_c = 1; | |
6610 | has_name_equals = 0; | |
6611 | curr_binding_label = NULL; | |
6612 | } | |
6613 | ||
af1a34ee | 6614 | /* Get procedure symbols. */ |
6615 | for(num=1;;num++) | |
6616 | { | |
af1a34ee | 6617 | m = gfc_match_symbol (&sym, 0); |
6618 | if (m == MATCH_NO) | |
6619 | goto syntax; | |
6620 | else if (m == MATCH_ERROR) | |
6621 | return m; | |
6622 | ||
6623 | /* Add current_attr to the symbol attributes. */ | |
60e19868 | 6624 | if (!gfc_copy_attr (&sym->attr, ¤t_attr, NULL)) |
af1a34ee | 6625 | return MATCH_ERROR; |
6626 | ||
6627 | if (sym->attr.is_bind_c) | |
6628 | { | |
6629 | /* Check for C1218. */ | |
6630 | if (!proc_if || !proc_if->attr.is_bind_c) | |
6631 | { | |
6632 | gfc_error ("BIND(C) attribute at %C requires " | |
6633 | "an interface with BIND(C)"); | |
6634 | return MATCH_ERROR; | |
6635 | } | |
6636 | /* Check for C1217. */ | |
6637 | if (has_name_equals && sym->attr.pointer) | |
6638 | { | |
6639 | gfc_error ("BIND(C) procedure with NAME may not have " | |
6640 | "POINTER attribute at %C"); | |
6641 | return MATCH_ERROR; | |
6642 | } | |
6643 | if (has_name_equals && sym->attr.dummy) | |
6644 | { | |
6645 | gfc_error ("Dummy procedure at %C may not have " | |
6646 | "BIND(C) attribute with NAME"); | |
6647 | return MATCH_ERROR; | |
6648 | } | |
6649 | /* Set binding label for BIND(C). */ | |
60e19868 | 6650 | if (!set_binding_label (&sym->binding_label, sym->name, num)) |
af1a34ee | 6651 | return MATCH_ERROR; |
6652 | } | |
6653 | ||
60e19868 | 6654 | if (!gfc_add_external (&sym->attr, NULL)) |
af1a34ee | 6655 | return MATCH_ERROR; |
1e057e9b | 6656 | |
60e19868 | 6657 | if (add_hidden_procptr_result (sym)) |
1e057e9b | 6658 | sym = sym->result; |
6659 | ||
60e19868 | 6660 | if (!gfc_add_proc (&sym->attr, sym->name, NULL)) |
af1a34ee | 6661 | return MATCH_ERROR; |
6662 | ||
6663 | /* Set interface. */ | |
6664 | if (proc_if != NULL) | |
f7d7a083 | 6665 | { |
13a834aa | 6666 | if (sym->ts.type != BT_UNKNOWN) |
6667 | { | |
716da296 | 6668 | gfc_error ("Procedure %qs at %L already has basic type of %s", |
13a834aa | 6669 | sym->name, &gfc_current_locus, |
6670 | gfc_basic_typename (sym->ts.type)); | |
6671 | return MATCH_ERROR; | |
6672 | } | |
2cd2bb5c | 6673 | sym->ts.interface = proc_if; |
f7d7a083 | 6674 | sym->attr.untyped = 1; |
180a5dc0 | 6675 | sym->attr.if_source = IFSRC_IFBODY; |
f7d7a083 | 6676 | } |
af1a34ee | 6677 | else if (current_ts.type != BT_UNKNOWN) |
6678 | { | |
60e19868 | 6679 | if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
13a834aa | 6680 | return MATCH_ERROR; |
2cd2bb5c | 6681 | sym->ts.interface = gfc_new_symbol ("", gfc_current_ns); |
6682 | sym->ts.interface->ts = current_ts; | |
ce80bc5b | 6683 | sym->ts.interface->attr.flavor = FL_PROCEDURE; |
2cd2bb5c | 6684 | sym->ts.interface->attr.function = 1; |
ce80bc5b | 6685 | sym->attr.function = 1; |
180a5dc0 | 6686 | sym->attr.if_source = IFSRC_UNKNOWN; |
af1a34ee | 6687 | } |
6688 | ||
cad0ddcf | 6689 | if (gfc_match (" =>") == MATCH_YES) |
6690 | { | |
6691 | if (!current_attr.pointer) | |
6692 | { | |
6693 | gfc_error ("Initialization at %C isn't for a pointer variable"); | |
6694 | m = MATCH_ERROR; | |
6695 | goto cleanup; | |
6696 | } | |
6697 | ||
23d075f4 | 6698 | m = match_pointer_init (&initializer, 1); |
cad0ddcf | 6699 | if (m != MATCH_YES) |
6700 | goto cleanup; | |
6701 | ||
60e19868 | 6702 | if (!add_init_expr_to_sym (sym->name, &initializer, &gfc_current_locus)) |
cad0ddcf | 6703 | goto cleanup; |
6704 | ||
6705 | } | |
6706 | ||
af1a34ee | 6707 | if (gfc_match_eos () == MATCH_YES) |
6708 | return MATCH_YES; | |
6709 | if (gfc_match_char (',') != MATCH_YES) | |
6710 | goto syntax; | |
6711 | } | |
6712 | ||
6713 | syntax: | |
6714 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
6715 | return MATCH_ERROR; | |
cad0ddcf | 6716 | |
6717 | cleanup: | |
6718 | /* Free stuff up and return. */ | |
6719 | gfc_free_expr (initializer); | |
6720 | return m; | |
af1a34ee | 6721 | } |
6722 | ||
6723 | ||
64e93293 | 6724 | static match |
6725 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc); | |
6726 | ||
6727 | ||
6728 | /* Match a procedure pointer component declaration (R445). */ | |
6729 | ||
6730 | static match | |
6731 | match_ppc_decl (void) | |
6732 | { | |
6733 | match m; | |
6734 | gfc_symbol *proc_if = NULL; | |
6735 | gfc_typespec ts; | |
6736 | int num; | |
6737 | gfc_component *c; | |
6738 | gfc_expr *initializer = NULL; | |
6739 | gfc_typebound_proc* tb; | |
6740 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6741 | ||
6742 | /* Parse interface (with brackets). */ | |
6743 | m = match_procedure_interface (&proc_if); | |
6744 | if (m != MATCH_YES) | |
6745 | goto syntax; | |
6746 | ||
6747 | /* Parse attributes. */ | |
6748 | tb = XCNEW (gfc_typebound_proc); | |
6749 | tb->where = gfc_current_locus; | |
6750 | m = match_binding_attributes (tb, false, true); | |
6751 | if (m == MATCH_ERROR) | |
6752 | return m; | |
6753 | ||
64e93293 | 6754 | gfc_clear_attr (¤t_attr); |
6755 | current_attr.procedure = 1; | |
6756 | current_attr.proc_pointer = 1; | |
6757 | current_attr.access = tb->access; | |
6758 | current_attr.flavor = FL_PROCEDURE; | |
6759 | ||
6760 | /* Match the colons (required). */ | |
6761 | if (gfc_match (" ::") != MATCH_YES) | |
6762 | { | |
0d2b3c9c | 6763 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
64e93293 | 6764 | return MATCH_ERROR; |
6765 | } | |
6766 | ||
6767 | /* Check for C450. */ | |
6768 | if (!tb->nopass && proc_if == NULL) | |
6769 | { | |
6770 | gfc_error("NOPASS or explicit interface required at %C"); | |
6771 | return MATCH_ERROR; | |
6772 | } | |
6773 | ||
60e19868 | 6774 | if (!gfc_notify_std (GFC_STD_F2003, "Procedure pointer component at %C")) |
8a026279 | 6775 | return MATCH_ERROR; |
6776 | ||
64e93293 | 6777 | /* Match PPC names. */ |
6778 | ts = current_ts; | |
6779 | for(num=1;;num++) | |
6780 | { | |
6781 | m = gfc_match_name (name); | |
6782 | if (m == MATCH_NO) | |
6783 | goto syntax; | |
6784 | else if (m == MATCH_ERROR) | |
6785 | return m; | |
6786 | ||
60e19868 | 6787 | if (!gfc_add_component (gfc_current_block(), name, &c)) |
64e93293 | 6788 | return MATCH_ERROR; |
6789 | ||
6790 | /* Add current_attr to the symbol attributes. */ | |
60e19868 | 6791 | if (!gfc_copy_attr (&c->attr, ¤t_attr, NULL)) |
64e93293 | 6792 | return MATCH_ERROR; |
6793 | ||
60e19868 | 6794 | if (!gfc_add_external (&c->attr, NULL)) |
64e93293 | 6795 | return MATCH_ERROR; |
6796 | ||
60e19868 | 6797 | if (!gfc_add_proc (&c->attr, name, NULL)) |
64e93293 | 6798 | return MATCH_ERROR; |
6799 | ||
99014f81 | 6800 | if (num == 1) |
6801 | c->tb = tb; | |
6802 | else | |
6803 | { | |
6804 | c->tb = XCNEW (gfc_typebound_proc); | |
6805 | c->tb->where = gfc_current_locus; | |
6806 | *c->tb = *tb; | |
6807 | } | |
fe9b08a2 | 6808 | |
64e93293 | 6809 | /* Set interface. */ |
6810 | if (proc_if != NULL) | |
6811 | { | |
6812 | c->ts.interface = proc_if; | |
6813 | c->attr.untyped = 1; | |
6814 | c->attr.if_source = IFSRC_IFBODY; | |
6815 | } | |
6816 | else if (ts.type != BT_UNKNOWN) | |
6817 | { | |
6818 | c->ts = ts; | |
6819 | c->ts.interface = gfc_new_symbol ("", gfc_current_ns); | |
a63bcd97 | 6820 | c->ts.interface->result = c->ts.interface; |
64e93293 | 6821 | c->ts.interface->ts = ts; |
ce80bc5b | 6822 | c->ts.interface->attr.flavor = FL_PROCEDURE; |
64e93293 | 6823 | c->ts.interface->attr.function = 1; |
ce80bc5b | 6824 | c->attr.function = 1; |
64e93293 | 6825 | c->attr.if_source = IFSRC_UNKNOWN; |
6826 | } | |
6827 | ||
6828 | if (gfc_match (" =>") == MATCH_YES) | |
6829 | { | |
23d075f4 | 6830 | m = match_pointer_init (&initializer, 1); |
64e93293 | 6831 | if (m != MATCH_YES) |
6832 | { | |
6833 | gfc_free_expr (initializer); | |
6834 | return m; | |
6835 | } | |
6836 | c->initializer = initializer; | |
6837 | } | |
6838 | ||
6839 | if (gfc_match_eos () == MATCH_YES) | |
6840 | return MATCH_YES; | |
6841 | if (gfc_match_char (',') != MATCH_YES) | |
6842 | goto syntax; | |
6843 | } | |
6844 | ||
6845 | syntax: | |
6846 | gfc_error ("Syntax error in procedure pointer component at %C"); | |
6847 | return MATCH_ERROR; | |
6848 | } | |
6849 | ||
6850 | ||
af1a34ee | 6851 | /* Match a PROCEDURE declaration inside an interface (R1206). */ |
6852 | ||
6853 | static match | |
6854 | match_procedure_in_interface (void) | |
6855 | { | |
6856 | match m; | |
6857 | gfc_symbol *sym; | |
6858 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
2b0f5dc8 | 6859 | locus old_locus; |
af1a34ee | 6860 | |
6861 | if (current_interface.type == INTERFACE_NAMELESS | |
6862 | || current_interface.type == INTERFACE_ABSTRACT) | |
6863 | { | |
6864 | gfc_error ("PROCEDURE at %C must be in a generic interface"); | |
6865 | return MATCH_ERROR; | |
6866 | } | |
6867 | ||
2b0f5dc8 | 6868 | /* Check if the F2008 optional double colon appears. */ |
6869 | gfc_gobble_whitespace (); | |
6870 | old_locus = gfc_current_locus; | |
6871 | if (gfc_match ("::") == MATCH_YES) | |
6872 | { | |
60e19868 | 6873 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
6874 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
2b0f5dc8 | 6875 | return MATCH_ERROR; |
6876 | } | |
6877 | else | |
6878 | gfc_current_locus = old_locus; | |
6879 | ||
af1a34ee | 6880 | for(;;) |
6881 | { | |
6882 | m = gfc_match_name (name); | |
6883 | if (m == MATCH_NO) | |
6884 | goto syntax; | |
6885 | else if (m == MATCH_ERROR) | |
6886 | return m; | |
6887 | if (gfc_get_symbol (name, gfc_current_ns->parent, &sym)) | |
6888 | return MATCH_ERROR; | |
6889 | ||
60e19868 | 6890 | if (!gfc_add_interface (sym)) |
af1a34ee | 6891 | return MATCH_ERROR; |
6892 | ||
af1a34ee | 6893 | if (gfc_match_eos () == MATCH_YES) |
6894 | break; | |
6895 | if (gfc_match_char (',') != MATCH_YES) | |
6896 | goto syntax; | |
6897 | } | |
6898 | ||
6899 | return MATCH_YES; | |
6900 | ||
6901 | syntax: | |
6902 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
6903 | return MATCH_ERROR; | |
6904 | } | |
6905 | ||
6906 | ||
6907 | /* General matcher for PROCEDURE declarations. */ | |
6908 | ||
7fd88f6e | 6909 | static match match_procedure_in_type (void); |
6910 | ||
af1a34ee | 6911 | match |
6912 | gfc_match_procedure (void) | |
6913 | { | |
6914 | match m; | |
6915 | ||
6916 | switch (gfc_current_state ()) | |
6917 | { | |
6918 | case COMP_NONE: | |
6919 | case COMP_PROGRAM: | |
6920 | case COMP_MODULE: | |
4b8eb6ca | 6921 | case COMP_SUBMODULE: |
af1a34ee | 6922 | case COMP_SUBROUTINE: |
6923 | case COMP_FUNCTION: | |
0b342e60 | 6924 | case COMP_BLOCK: |
af1a34ee | 6925 | m = match_procedure_decl (); |
6926 | break; | |
6927 | case COMP_INTERFACE: | |
6928 | m = match_procedure_in_interface (); | |
6929 | break; | |
6930 | case COMP_DERIVED: | |
64e93293 | 6931 | m = match_ppc_decl (); |
6932 | break; | |
7fd88f6e | 6933 | case COMP_DERIVED_CONTAINS: |
6934 | m = match_procedure_in_type (); | |
6935 | break; | |
af1a34ee | 6936 | default: |
6937 | return MATCH_NO; | |
6938 | } | |
6939 | ||
6940 | if (m != MATCH_YES) | |
6941 | return m; | |
6942 | ||
60e19868 | 6943 | if (!gfc_notify_std (GFC_STD_F2003, "PROCEDURE statement at %C")) |
af1a34ee | 6944 | return MATCH_ERROR; |
6945 | ||
6946 | return m; | |
6947 | } | |
6948 | ||
6949 | ||
a34926ba | 6950 | /* Warn if a matched procedure has the same name as an intrinsic; this is |
6951 | simply a wrapper around gfc_warn_intrinsic_shadow that interprets the current | |
6952 | parser-state-stack to find out whether we're in a module. */ | |
6953 | ||
6954 | static void | |
8290d53f | 6955 | do_warn_intrinsic_shadow (const gfc_symbol* sym, bool func) |
a34926ba | 6956 | { |
6957 | bool in_module; | |
6958 | ||
6959 | in_module = (gfc_state_stack->previous | |
4b8eb6ca | 6960 | && (gfc_state_stack->previous->state == COMP_MODULE |
6961 | || gfc_state_stack->previous->state == COMP_SUBMODULE)); | |
a34926ba | 6962 | |
6963 | gfc_warn_intrinsic_shadow (sym, in_module, func); | |
6964 | } | |
6965 | ||
6966 | ||
4ee9c684 | 6967 | /* Match a function declaration. */ |
6968 | ||
6969 | match | |
6970 | gfc_match_function_decl (void) | |
6971 | { | |
6972 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
6973 | gfc_symbol *sym, *result; | |
6974 | locus old_loc; | |
6975 | match m; | |
c5d33754 | 6976 | match suffix_match; |
8db94b3b | 6977 | match found_match; /* Status returned by match func. */ |
4ee9c684 | 6978 | |
6979 | if (gfc_current_state () != COMP_NONE | |
6980 | && gfc_current_state () != COMP_INTERFACE | |
6981 | && gfc_current_state () != COMP_CONTAINS) | |
6982 | return MATCH_NO; | |
6983 | ||
6984 | gfc_clear_ts (¤t_ts); | |
6985 | ||
cbb9e6aa | 6986 | old_loc = gfc_current_locus; |
4ee9c684 | 6987 | |
077932f9 | 6988 | m = gfc_match_prefix (¤t_ts); |
4ee9c684 | 6989 | if (m != MATCH_YES) |
6990 | { | |
cbb9e6aa | 6991 | gfc_current_locus = old_loc; |
4ee9c684 | 6992 | return m; |
6993 | } | |
6994 | ||
6995 | if (gfc_match ("function% %n", name) != MATCH_YES) | |
6996 | { | |
cbb9e6aa | 6997 | gfc_current_locus = old_loc; |
4ee9c684 | 6998 | return MATCH_NO; |
6999 | } | |
4b8eb6ca | 7000 | |
d77f260f | 7001 | if (get_proc_name (name, &sym, false)) |
4ee9c684 | 7002 | return MATCH_ERROR; |
1e057e9b | 7003 | |
60e19868 | 7004 | if (add_hidden_procptr_result (sym)) |
1e057e9b | 7005 | sym = sym->result; |
7006 | ||
4b8eb6ca | 7007 | if (current_attr.module_procedure) |
7008 | sym->attr.module_procedure = 1; | |
7009 | ||
4ee9c684 | 7010 | gfc_new_block = sym; |
7011 | ||
7012 | m = gfc_match_formal_arglist (sym, 0, 0); | |
7013 | if (m == MATCH_NO) | |
9b435b6d | 7014 | { |
7015 | gfc_error ("Expected formal argument list in function " | |
1a9745d2 | 7016 | "definition at %C"); |
9b435b6d | 7017 | m = MATCH_ERROR; |
7018 | goto cleanup; | |
7019 | } | |
4ee9c684 | 7020 | else if (m == MATCH_ERROR) |
7021 | goto cleanup; | |
7022 | ||
7023 | result = NULL; | |
7024 | ||
c5d33754 | 7025 | /* According to the draft, the bind(c) and result clause can |
7026 | come in either order after the formal_arg_list (i.e., either | |
7027 | can be first, both can exist together or by themselves or neither | |
7028 | one). Therefore, the match_result can't match the end of the | |
7029 | string, and check for the bind(c) or result clause in either order. */ | |
7030 | found_match = gfc_match_eos (); | |
7031 | ||
7032 | /* Make sure that it isn't already declared as BIND(C). If it is, it | |
7033 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7034 | not allowed for procedures. */ | |
7035 | if (sym->attr.is_bind_c == 1) | |
7036 | { | |
7037 | sym->attr.is_bind_c = 0; | |
7038 | if (sym->old_symbol != NULL) | |
7039 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7040 | "variables or common blocks", | |
7041 | &(sym->old_symbol->declared_at)); | |
7042 | else | |
7043 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7044 | "variables or common blocks", &gfc_current_locus); | |
4ee9c684 | 7045 | } |
7046 | ||
c5d33754 | 7047 | if (found_match != MATCH_YES) |
4ee9c684 | 7048 | { |
c5d33754 | 7049 | /* If we haven't found the end-of-statement, look for a suffix. */ |
7050 | suffix_match = gfc_match_suffix (sym, &result); | |
7051 | if (suffix_match == MATCH_YES) | |
7052 | /* Need to get the eos now. */ | |
7053 | found_match = gfc_match_eos (); | |
7054 | else | |
7055 | found_match = suffix_match; | |
4ee9c684 | 7056 | } |
7057 | ||
c5d33754 | 7058 | if(found_match != MATCH_YES) |
7059 | m = MATCH_ERROR; | |
4ee9c684 | 7060 | else |
7061 | { | |
c5d33754 | 7062 | /* Make changes to the symbol. */ |
7063 | m = MATCH_ERROR; | |
8db94b3b | 7064 | |
60e19868 | 7065 | if (!gfc_add_function (&sym->attr, sym->name, NULL)) |
c5d33754 | 7066 | goto cleanup; |
8db94b3b | 7067 | |
76e207a9 | 7068 | if (!gfc_missing_attr (&sym->attr, NULL)) |
c5d33754 | 7069 | goto cleanup; |
4ee9c684 | 7070 | |
76e207a9 | 7071 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
7072 | { | |
7073 | if(!sym->attr.module_procedure) | |
7074 | goto cleanup; | |
7075 | else | |
7076 | gfc_error_check (); | |
7077 | } | |
7078 | ||
8d39570e | 7079 | /* Delay matching the function characteristics until after the |
077932f9 | 7080 | specification block by signalling kind=-1. */ |
8d39570e | 7081 | sym->declared_at = old_loc; |
7082 | if (current_ts.type != BT_UNKNOWN) | |
7083 | current_ts.kind = -1; | |
7084 | else | |
7085 | current_ts.kind = 0; | |
077932f9 | 7086 | |
c5d33754 | 7087 | if (result == NULL) |
7088 | { | |
0477d42d | 7089 | if (current_ts.type != BT_UNKNOWN |
60e19868 | 7090 | && !gfc_add_type (sym, ¤t_ts, &gfc_current_locus)) |
0477d42d | 7091 | goto cleanup; |
c5d33754 | 7092 | sym->result = sym; |
7093 | } | |
7094 | else | |
7095 | { | |
0477d42d | 7096 | if (current_ts.type != BT_UNKNOWN |
60e19868 | 7097 | && !gfc_add_type (result, ¤t_ts, &gfc_current_locus)) |
0477d42d | 7098 | goto cleanup; |
c5d33754 | 7099 | sym->result = result; |
7100 | } | |
7101 | ||
a34926ba | 7102 | /* Warn if this procedure has the same name as an intrinsic. */ |
8290d53f | 7103 | do_warn_intrinsic_shadow (sym, true); |
a34926ba | 7104 | |
c5d33754 | 7105 | return MATCH_YES; |
7106 | } | |
4ee9c684 | 7107 | |
7108 | cleanup: | |
cbb9e6aa | 7109 | gfc_current_locus = old_loc; |
4ee9c684 | 7110 | return m; |
7111 | } | |
7112 | ||
1a9745d2 | 7113 | |
7114 | /* This is mostly a copy of parse.c(add_global_procedure) but modified to | |
7115 | pass the name of the entry, rather than the gfc_current_block name, and | |
7116 | to return false upon finding an existing global entry. */ | |
858f9894 | 7117 | |
7118 | static bool | |
8d779aef | 7119 | add_global_entry (const char *name, const char *binding_label, bool sub, |
7120 | locus *where) | |
858f9894 | 7121 | { |
7122 | gfc_gsymbol *s; | |
8458f4ca | 7123 | enum gfc_symbol_type type; |
858f9894 | 7124 | |
5b11d932 | 7125 | type = sub ? GSYM_SUBROUTINE : GSYM_FUNCTION; |
858f9894 | 7126 | |
da5c730d | 7127 | /* Only in Fortran 2003: For procedures with a binding label also the Fortran |
7128 | name is a global identifier. */ | |
7129 | if (!binding_label || gfc_notification_std (GFC_STD_F2008)) | |
858f9894 | 7130 | { |
da5c730d | 7131 | s = gfc_get_gsymbol (name); |
7132 | ||
7133 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
7134 | { | |
8d779aef | 7135 | gfc_global_used (s, where); |
da5c730d | 7136 | return false; |
7137 | } | |
7138 | else | |
7139 | { | |
7140 | s->type = type; | |
c8b913ab | 7141 | s->sym_name = name; |
8d779aef | 7142 | s->where = *where; |
da5c730d | 7143 | s->defined = 1; |
7144 | s->ns = gfc_current_ns; | |
7145 | } | |
858f9894 | 7146 | } |
da5c730d | 7147 | |
7148 | /* Don't add the symbol multiple times. */ | |
7149 | if (binding_label | |
7150 | && (!gfc_notification_std (GFC_STD_F2008) | |
7151 | || strcmp (name, binding_label) != 0)) | |
7152 | { | |
7153 | s = gfc_get_gsymbol (binding_label); | |
7154 | ||
7155 | if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type)) | |
7156 | { | |
8d779aef | 7157 | gfc_global_used (s, where); |
da5c730d | 7158 | return false; |
7159 | } | |
7160 | else | |
7161 | { | |
7162 | s->type = type; | |
c8b913ab | 7163 | s->sym_name = name; |
da5c730d | 7164 | s->binding_label = binding_label; |
8d779aef | 7165 | s->where = *where; |
da5c730d | 7166 | s->defined = 1; |
7167 | s->ns = gfc_current_ns; | |
7168 | } | |
7169 | } | |
7170 | ||
7171 | return true; | |
858f9894 | 7172 | } |
4ee9c684 | 7173 | |
1a9745d2 | 7174 | |
4ee9c684 | 7175 | /* Match an ENTRY statement. */ |
7176 | ||
7177 | match | |
7178 | gfc_match_entry (void) | |
7179 | { | |
1b716045 | 7180 | gfc_symbol *proc; |
7181 | gfc_symbol *result; | |
7182 | gfc_symbol *entry; | |
4ee9c684 | 7183 | char name[GFC_MAX_SYMBOL_LEN + 1]; |
7184 | gfc_compile_state state; | |
7185 | match m; | |
1b716045 | 7186 | gfc_entry_list *el; |
7b5e1acc | 7187 | locus old_loc; |
d77f260f | 7188 | bool module_procedure; |
86f0974b | 7189 | char peek_char; |
7190 | match is_bind_c; | |
4ee9c684 | 7191 | |
7192 | m = gfc_match_name (name); | |
7193 | if (m != MATCH_YES) | |
7194 | return m; | |
7195 | ||
60e19868 | 7196 | if (!gfc_notify_std (GFC_STD_F2008_OBS, "ENTRY statement at %C")) |
a3b81b0f | 7197 | return MATCH_ERROR; |
7198 | ||
1b716045 | 7199 | state = gfc_current_state (); |
ea37f786 | 7200 | if (state != COMP_SUBROUTINE && state != COMP_FUNCTION) |
1b716045 | 7201 | { |
ea37f786 | 7202 | switch (state) |
7203 | { | |
7204 | case COMP_PROGRAM: | |
7205 | gfc_error ("ENTRY statement at %C cannot appear within a PROGRAM"); | |
7206 | break; | |
7207 | case COMP_MODULE: | |
7208 | gfc_error ("ENTRY statement at %C cannot appear within a MODULE"); | |
7209 | break; | |
4b8eb6ca | 7210 | case COMP_SUBMODULE: |
7211 | gfc_error ("ENTRY statement at %C cannot appear within a SUBMODULE"); | |
7212 | break; | |
ea37f786 | 7213 | case COMP_BLOCK_DATA: |
1a9745d2 | 7214 | gfc_error ("ENTRY statement at %C cannot appear within " |
7215 | "a BLOCK DATA"); | |
ea37f786 | 7216 | break; |
7217 | case COMP_INTERFACE: | |
1a9745d2 | 7218 | gfc_error ("ENTRY statement at %C cannot appear within " |
7219 | "an INTERFACE"); | |
ea37f786 | 7220 | break; |
d7cd448a | 7221 | case COMP_STRUCTURE: |
7222 | gfc_error ("ENTRY statement at %C cannot appear within " | |
7223 | "a STRUCTURE block"); | |
7224 | break; | |
ea37f786 | 7225 | case COMP_DERIVED: |
1a9745d2 | 7226 | gfc_error ("ENTRY statement at %C cannot appear within " |
7227 | "a DERIVED TYPE block"); | |
ea37f786 | 7228 | break; |
7229 | case COMP_IF: | |
1a9745d2 | 7230 | gfc_error ("ENTRY statement at %C cannot appear within " |
7231 | "an IF-THEN block"); | |
ea37f786 | 7232 | break; |
7233 | case COMP_DO: | |
55ea8666 | 7234 | case COMP_DO_CONCURRENT: |
1a9745d2 | 7235 | gfc_error ("ENTRY statement at %C cannot appear within " |
7236 | "a DO block"); | |
ea37f786 | 7237 | break; |
7238 | case COMP_SELECT: | |
1a9745d2 | 7239 | gfc_error ("ENTRY statement at %C cannot appear within " |
7240 | "a SELECT block"); | |
ea37f786 | 7241 | break; |
7242 | case COMP_FORALL: | |
1a9745d2 | 7243 | gfc_error ("ENTRY statement at %C cannot appear within " |
7244 | "a FORALL block"); | |
ea37f786 | 7245 | break; |
7246 | case COMP_WHERE: | |
1a9745d2 | 7247 | gfc_error ("ENTRY statement at %C cannot appear within " |
7248 | "a WHERE block"); | |
ea37f786 | 7249 | break; |
7250 | case COMP_CONTAINS: | |
1a9745d2 | 7251 | gfc_error ("ENTRY statement at %C cannot appear within " |
7252 | "a contained subprogram"); | |
ea37f786 | 7253 | break; |
7254 | default: | |
3132dbae | 7255 | gfc_error ("Unexpected ENTRY statement at %C"); |
ea37f786 | 7256 | } |
1b716045 | 7257 | return MATCH_ERROR; |
7258 | } | |
7259 | ||
c286c294 | 7260 | if ((state == COMP_SUBROUTINE || state == COMP_FUNCTION) |
7261 | && gfc_state_stack->previous->state == COMP_INTERFACE) | |
7262 | { | |
7263 | gfc_error ("ENTRY statement at %C cannot appear within an INTERFACE"); | |
7264 | return MATCH_ERROR; | |
7265 | } | |
7266 | ||
d77f260f | 7267 | module_procedure = gfc_current_ns->parent != NULL |
1a9745d2 | 7268 | && gfc_current_ns->parent->proc_name |
7269 | && gfc_current_ns->parent->proc_name->attr.flavor | |
7270 | == FL_MODULE; | |
d77f260f | 7271 | |
1b716045 | 7272 | if (gfc_current_ns->parent != NULL |
7273 | && gfc_current_ns->parent->proc_name | |
d77f260f | 7274 | && !module_procedure) |
1b716045 | 7275 | { |
7276 | gfc_error("ENTRY statement at %C cannot appear in a " | |
7277 | "contained procedure"); | |
7278 | return MATCH_ERROR; | |
7279 | } | |
7280 | ||
d77f260f | 7281 | /* Module function entries need special care in get_proc_name |
7282 | because previous references within the function will have | |
7283 | created symbols attached to the current namespace. */ | |
7284 | if (get_proc_name (name, &entry, | |
7285 | gfc_current_ns->parent != NULL | |
c1e4695a | 7286 | && module_procedure)) |
4ee9c684 | 7287 | return MATCH_ERROR; |
7288 | ||
1b716045 | 7289 | proc = gfc_current_block (); |
7290 | ||
86f0974b | 7291 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
7292 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7293 | not allowed for procedures. */ | |
7294 | if (entry->attr.is_bind_c == 1) | |
7295 | { | |
7296 | entry->attr.is_bind_c = 0; | |
7297 | if (entry->old_symbol != NULL) | |
7298 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7299 | "variables or common blocks", | |
7300 | &(entry->old_symbol->declared_at)); | |
7301 | else | |
7302 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7303 | "variables or common blocks", &gfc_current_locus); | |
7304 | } | |
8db94b3b | 7305 | |
86f0974b | 7306 | /* Check what next non-whitespace character is so we can tell if there |
7307 | is the required parens if we have a BIND(C). */ | |
8d779aef | 7308 | old_loc = gfc_current_locus; |
86f0974b | 7309 | gfc_gobble_whitespace (); |
e0be6f02 | 7310 | peek_char = gfc_peek_ascii_char (); |
86f0974b | 7311 | |
1b716045 | 7312 | if (state == COMP_SUBROUTINE) |
4ee9c684 | 7313 | { |
4ee9c684 | 7314 | m = gfc_match_formal_arglist (entry, 0, 1); |
7315 | if (m != MATCH_YES) | |
7316 | return MATCH_ERROR; | |
7317 | ||
75ae7f6c | 7318 | /* Call gfc_match_bind_c with allow_binding_name = true as ENTRY can |
7319 | never be an internal procedure. */ | |
7320 | is_bind_c = gfc_match_bind_c (entry, true); | |
86f0974b | 7321 | if (is_bind_c == MATCH_ERROR) |
7322 | return MATCH_ERROR; | |
7323 | if (is_bind_c == MATCH_YES) | |
7324 | { | |
7325 | if (peek_char != '(') | |
7326 | { | |
7327 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
7328 | return MATCH_ERROR; | |
7329 | } | |
76e207a9 | 7330 | if (!gfc_add_is_bind_c (&(entry->attr), entry->name, |
60e19868 | 7331 | &(entry->declared_at), 1)) |
86f0974b | 7332 | return MATCH_ERROR; |
7333 | } | |
7334 | ||
da5c730d | 7335 | if (!gfc_current_ns->parent |
8d779aef | 7336 | && !add_global_entry (name, entry->binding_label, true, |
7337 | &old_loc)) | |
da5c730d | 7338 | return MATCH_ERROR; |
7339 | ||
7340 | /* An entry in a subroutine. */ | |
60e19868 | 7341 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7342 | || !gfc_add_subroutine (&entry->attr, entry->name, NULL)) | |
4ee9c684 | 7343 | return MATCH_ERROR; |
1b716045 | 7344 | } |
7345 | else | |
7346 | { | |
7b5e1acc | 7347 | /* An entry in a function. |
1a9745d2 | 7348 | We need to take special care because writing |
7349 | ENTRY f() | |
7350 | as | |
7351 | ENTRY f | |
7352 | is allowed, whereas | |
7353 | ENTRY f() RESULT (r) | |
7354 | can't be written as | |
7355 | ENTRY f RESULT (r). */ | |
7b5e1acc | 7356 | if (gfc_match_eos () == MATCH_YES) |
7357 | { | |
7358 | gfc_current_locus = old_loc; | |
7359 | /* Match the empty argument list, and add the interface to | |
7360 | the symbol. */ | |
7361 | m = gfc_match_formal_arglist (entry, 0, 1); | |
7362 | } | |
7363 | else | |
7364 | m = gfc_match_formal_arglist (entry, 0, 0); | |
7365 | ||
4ee9c684 | 7366 | if (m != MATCH_YES) |
7367 | return MATCH_ERROR; | |
7368 | ||
4ee9c684 | 7369 | result = NULL; |
7370 | ||
7371 | if (gfc_match_eos () == MATCH_YES) | |
7372 | { | |
60e19868 | 7373 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7374 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
4ee9c684 | 7375 | return MATCH_ERROR; |
7376 | ||
c6871095 | 7377 | entry->result = entry; |
4ee9c684 | 7378 | } |
7379 | else | |
7380 | { | |
86f0974b | 7381 | m = gfc_match_suffix (entry, &result); |
4ee9c684 | 7382 | if (m == MATCH_NO) |
7383 | gfc_syntax_error (ST_ENTRY); | |
7384 | if (m != MATCH_YES) | |
7385 | return MATCH_ERROR; | |
7386 | ||
86f0974b | 7387 | if (result) |
7388 | { | |
60e19868 | 7389 | if (!gfc_add_result (&result->attr, result->name, NULL) |
7390 | || !gfc_add_entry (&entry->attr, result->name, NULL) | |
7391 | || !gfc_add_function (&entry->attr, result->name, NULL)) | |
86f0974b | 7392 | return MATCH_ERROR; |
7393 | entry->result = result; | |
7394 | } | |
7395 | else | |
7396 | { | |
60e19868 | 7397 | if (!gfc_add_entry (&entry->attr, entry->name, NULL) |
7398 | || !gfc_add_function (&entry->attr, entry->name, NULL)) | |
86f0974b | 7399 | return MATCH_ERROR; |
7400 | entry->result = entry; | |
7401 | } | |
4ee9c684 | 7402 | } |
da5c730d | 7403 | |
7404 | if (!gfc_current_ns->parent | |
8d779aef | 7405 | && !add_global_entry (name, entry->binding_label, false, |
7406 | &old_loc)) | |
da5c730d | 7407 | return MATCH_ERROR; |
4ee9c684 | 7408 | } |
7409 | ||
7410 | if (gfc_match_eos () != MATCH_YES) | |
7411 | { | |
7412 | gfc_syntax_error (ST_ENTRY); | |
7413 | return MATCH_ERROR; | |
7414 | } | |
7415 | ||
1b716045 | 7416 | entry->attr.recursive = proc->attr.recursive; |
7417 | entry->attr.elemental = proc->attr.elemental; | |
7418 | entry->attr.pure = proc->attr.pure; | |
4ee9c684 | 7419 | |
1b716045 | 7420 | el = gfc_get_entry_list (); |
7421 | el->sym = entry; | |
7422 | el->next = gfc_current_ns->entries; | |
7423 | gfc_current_ns->entries = el; | |
7424 | if (el->next) | |
7425 | el->id = el->next->id + 1; | |
7426 | else | |
7427 | el->id = 1; | |
4ee9c684 | 7428 | |
1b716045 | 7429 | new_st.op = EXEC_ENTRY; |
7430 | new_st.ext.entry = el; | |
7431 | ||
7432 | return MATCH_YES; | |
4ee9c684 | 7433 | } |
7434 | ||
7435 | ||
7436 | /* Match a subroutine statement, including optional prefixes. */ | |
7437 | ||
7438 | match | |
7439 | gfc_match_subroutine (void) | |
7440 | { | |
7441 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7442 | gfc_symbol *sym; | |
7443 | match m; | |
c5d33754 | 7444 | match is_bind_c; |
7445 | char peek_char; | |
75ae7f6c | 7446 | bool allow_binding_name; |
4ee9c684 | 7447 | |
7448 | if (gfc_current_state () != COMP_NONE | |
7449 | && gfc_current_state () != COMP_INTERFACE | |
7450 | && gfc_current_state () != COMP_CONTAINS) | |
7451 | return MATCH_NO; | |
7452 | ||
077932f9 | 7453 | m = gfc_match_prefix (NULL); |
4ee9c684 | 7454 | if (m != MATCH_YES) |
7455 | return m; | |
7456 | ||
7457 | m = gfc_match ("subroutine% %n", name); | |
7458 | if (m != MATCH_YES) | |
7459 | return m; | |
7460 | ||
d77f260f | 7461 | if (get_proc_name (name, &sym, false)) |
4ee9c684 | 7462 | return MATCH_ERROR; |
1e057e9b | 7463 | |
22c1d301 | 7464 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if |
293d72e0 | 7465 | the symbol existed before. */ |
22c1d301 | 7466 | sym->declared_at = gfc_current_locus; |
7467 | ||
4b8eb6ca | 7468 | if (current_attr.module_procedure) |
7469 | sym->attr.module_procedure = 1; | |
7470 | ||
60e19868 | 7471 | if (add_hidden_procptr_result (sym)) |
1e057e9b | 7472 | sym = sym->result; |
7473 | ||
4ee9c684 | 7474 | gfc_new_block = sym; |
7475 | ||
c5d33754 | 7476 | /* Check what next non-whitespace character is so we can tell if there |
86f0974b | 7477 | is the required parens if we have a BIND(C). */ |
c5d33754 | 7478 | gfc_gobble_whitespace (); |
e0be6f02 | 7479 | peek_char = gfc_peek_ascii_char (); |
8db94b3b | 7480 | |
60e19868 | 7481 | if (!gfc_add_subroutine (&sym->attr, sym->name, NULL)) |
4ee9c684 | 7482 | return MATCH_ERROR; |
7483 | ||
7484 | if (gfc_match_formal_arglist (sym, 0, 1) != MATCH_YES) | |
7485 | return MATCH_ERROR; | |
7486 | ||
c5d33754 | 7487 | /* Make sure that it isn't already declared as BIND(C). If it is, it |
7488 | must have been marked BIND(C) with a BIND(C) attribute and that is | |
7489 | not allowed for procedures. */ | |
7490 | if (sym->attr.is_bind_c == 1) | |
7491 | { | |
7492 | sym->attr.is_bind_c = 0; | |
7493 | if (sym->old_symbol != NULL) | |
7494 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7495 | "variables or common blocks", | |
7496 | &(sym->old_symbol->declared_at)); | |
7497 | else | |
7498 | gfc_error_now ("BIND(C) attribute at %L can only be used for " | |
7499 | "variables or common blocks", &gfc_current_locus); | |
7500 | } | |
75ae7f6c | 7501 | |
7502 | /* C binding names are not allowed for internal procedures. */ | |
7503 | if (gfc_current_state () == COMP_CONTAINS | |
7504 | && sym->ns->proc_name->attr.flavor != FL_MODULE) | |
7505 | allow_binding_name = false; | |
7506 | else | |
7507 | allow_binding_name = true; | |
7508 | ||
c5d33754 | 7509 | /* Here, we are just checking if it has the bind(c) attribute, and if |
7510 | so, then we need to make sure it's all correct. If it doesn't, | |
7511 | we still need to continue matching the rest of the subroutine line. */ | |
75ae7f6c | 7512 | is_bind_c = gfc_match_bind_c (sym, allow_binding_name); |
c5d33754 | 7513 | if (is_bind_c == MATCH_ERROR) |
7514 | { | |
7515 | /* There was an attempt at the bind(c), but it was wrong. An | |
7516 | error message should have been printed w/in the gfc_match_bind_c | |
7517 | so here we'll just return the MATCH_ERROR. */ | |
7518 | return MATCH_ERROR; | |
7519 | } | |
7520 | ||
7521 | if (is_bind_c == MATCH_YES) | |
7522 | { | |
75ae7f6c | 7523 | /* The following is allowed in the Fortran 2008 draft. */ |
4518e961 | 7524 | if (gfc_current_state () == COMP_CONTAINS |
75ae7f6c | 7525 | && sym->ns->proc_name->attr.flavor != FL_MODULE |
60e19868 | 7526 | && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute " |
7527 | "at %L may not be specified for an internal " | |
7528 | "procedure", &gfc_current_locus)) | |
75ae7f6c | 7529 | return MATCH_ERROR; |
7530 | ||
c5d33754 | 7531 | if (peek_char != '(') |
7532 | { | |
7533 | gfc_error ("Missing required parentheses before BIND(C) at %C"); | |
7534 | return MATCH_ERROR; | |
7535 | } | |
76e207a9 | 7536 | if (!gfc_add_is_bind_c (&(sym->attr), sym->name, |
60e19868 | 7537 | &(sym->declared_at), 1)) |
c5d33754 | 7538 | return MATCH_ERROR; |
7539 | } | |
8db94b3b | 7540 | |
4ee9c684 | 7541 | if (gfc_match_eos () != MATCH_YES) |
7542 | { | |
7543 | gfc_syntax_error (ST_SUBROUTINE); | |
7544 | return MATCH_ERROR; | |
7545 | } | |
7546 | ||
60e19868 | 7547 | if (!copy_prefix (&sym->attr, &sym->declared_at)) |
76e207a9 | 7548 | { |
7549 | if(!sym->attr.module_procedure) | |
7550 | return MATCH_ERROR; | |
7551 | else | |
7552 | gfc_error_check (); | |
7553 | } | |
4ee9c684 | 7554 | |
a34926ba | 7555 | /* Warn if it has the same name as an intrinsic. */ |
8290d53f | 7556 | do_warn_intrinsic_shadow (sym, false); |
a34926ba | 7557 | |
4ee9c684 | 7558 | return MATCH_YES; |
7559 | } | |
7560 | ||
7561 | ||
7136063b | 7562 | /* Check that the NAME identifier in a BIND attribute or statement |
7563 | is conform to C identifier rules. */ | |
7564 | ||
7565 | match | |
7566 | check_bind_name_identifier (char **name) | |
7567 | { | |
7568 | char *n = *name, *p; | |
7569 | ||
7570 | /* Remove leading spaces. */ | |
7571 | while (*n == ' ') | |
7572 | n++; | |
7573 | ||
7574 | /* On an empty string, free memory and set name to NULL. */ | |
7575 | if (*n == '\0') | |
7576 | { | |
7577 | free (*name); | |
7578 | *name = NULL; | |
7579 | return MATCH_YES; | |
7580 | } | |
7581 | ||
7582 | /* Remove trailing spaces. */ | |
7583 | p = n + strlen(n) - 1; | |
7584 | while (*p == ' ') | |
7585 | *(p--) = '\0'; | |
7586 | ||
7587 | /* Insert the identifier into the symbol table. */ | |
7588 | p = xstrdup (n); | |
7589 | free (*name); | |
7590 | *name = p; | |
7591 | ||
7592 | /* Now check that identifier is valid under C rules. */ | |
7593 | if (ISDIGIT (*p)) | |
7594 | { | |
7595 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
7596 | return MATCH_ERROR; | |
7597 | } | |
7598 | ||
7599 | for (; *p; p++) | |
7600 | if (!(ISALNUM (*p) || *p == '_' || *p == '$')) | |
7601 | { | |
7602 | gfc_error ("Invalid C identifier in NAME= specifier at %C"); | |
7603 | return MATCH_ERROR; | |
7604 | } | |
7605 | ||
7606 | return MATCH_YES; | |
7607 | } | |
7608 | ||
7609 | ||
c5d33754 | 7610 | /* Match a BIND(C) specifier, with the optional 'name=' specifier if |
7611 | given, and set the binding label in either the given symbol (if not | |
a0527218 | 7612 | NULL), or in the current_ts. The symbol may be NULL because we may |
c5d33754 | 7613 | encounter the BIND(C) before the declaration itself. Return |
7614 | MATCH_NO if what we're looking at isn't a BIND(C) specifier, | |
7615 | MATCH_ERROR if it is a BIND(C) clause but an error was encountered, | |
7616 | or MATCH_YES if the specifier was correct and the binding label and | |
7617 | bind(c) fields were set correctly for the given symbol or the | |
75ae7f6c | 7618 | current_ts. If allow_binding_name is false, no binding name may be |
7619 | given. */ | |
c5d33754 | 7620 | |
7621 | match | |
75ae7f6c | 7622 | gfc_match_bind_c (gfc_symbol *sym, bool allow_binding_name) |
c5d33754 | 7623 | { |
7136063b | 7624 | char *binding_label = NULL; |
7625 | gfc_expr *e = NULL; | |
c5d33754 | 7626 | |
8db94b3b | 7627 | /* Initialize the flag that specifies whether we encountered a NAME= |
c5d33754 | 7628 | specifier or not. */ |
7629 | has_name_equals = 0; | |
7630 | ||
c5d33754 | 7631 | /* This much we have to be able to match, in this order, if |
7632 | there is a bind(c) label. */ | |
7633 | if (gfc_match (" bind ( c ") != MATCH_YES) | |
7634 | return MATCH_NO; | |
7635 | ||
7636 | /* Now see if there is a binding label, or if we've reached the | |
7637 | end of the bind(c) attribute without one. */ | |
7638 | if (gfc_match_char (',') == MATCH_YES) | |
7639 | { | |
7640 | if (gfc_match (" name = ") != MATCH_YES) | |
7641 | { | |
7642 | gfc_error ("Syntax error in NAME= specifier for binding label " | |
7643 | "at %C"); | |
7644 | /* should give an error message here */ | |
7645 | return MATCH_ERROR; | |
7646 | } | |
7647 | ||
7648 | has_name_equals = 1; | |
7649 | ||
7136063b | 7650 | if (gfc_match_init_expr (&e) != MATCH_YES) |
7651 | { | |
7652 | gfc_free_expr (e); | |
7653 | return MATCH_ERROR; | |
7654 | } | |
8db94b3b | 7655 | |
7136063b | 7656 | if (!gfc_simplify_expr(e, 0)) |
c5d33754 | 7657 | { |
7136063b | 7658 | gfc_error ("NAME= specifier at %C should be a constant expression"); |
7659 | gfc_free_expr (e); | |
7660 | return MATCH_ERROR; | |
c5d33754 | 7661 | } |
7136063b | 7662 | |
7663 | if (e->expr_type != EXPR_CONSTANT || e->ts.type != BT_CHARACTER | |
7664 | || e->ts.kind != gfc_default_character_kind || e->rank != 0) | |
c5d33754 | 7665 | { |
7136063b | 7666 | gfc_error ("NAME= specifier at %C should be a scalar of " |
7667 | "default character kind"); | |
7668 | gfc_free_expr(e); | |
7669 | return MATCH_ERROR; | |
c5d33754 | 7670 | } |
7136063b | 7671 | |
7672 | // Get a C string from the Fortran string constant | |
7673 | binding_label = gfc_widechar_to_char (e->value.character.string, | |
7674 | e->value.character.length); | |
7675 | gfc_free_expr(e); | |
7676 | ||
7677 | // Check that it is valid (old gfc_match_name_C) | |
7678 | if (check_bind_name_identifier (&binding_label) != MATCH_YES) | |
7679 | return MATCH_ERROR; | |
7680 | } | |
c5d33754 | 7681 | |
7682 | /* Get the required right paren. */ | |
7683 | if (gfc_match_char (')') != MATCH_YES) | |
7684 | { | |
7685 | gfc_error ("Missing closing paren for binding label at %C"); | |
7686 | return MATCH_ERROR; | |
7687 | } | |
7688 | ||
75ae7f6c | 7689 | if (has_name_equals && !allow_binding_name) |
7690 | { | |
7691 | gfc_error ("No binding name is allowed in BIND(C) at %C"); | |
7692 | return MATCH_ERROR; | |
7693 | } | |
7694 | ||
7695 | if (has_name_equals && sym != NULL && sym->attr.dummy) | |
7696 | { | |
7697 | gfc_error ("For dummy procedure %s, no binding name is " | |
7698 | "allowed in BIND(C) at %C", sym->name); | |
7699 | return MATCH_ERROR; | |
7700 | } | |
7701 | ||
7702 | ||
c5d33754 | 7703 | /* Save the binding label to the symbol. If sym is null, we're |
7704 | probably matching the typespec attributes of a declaration and | |
7705 | haven't gotten the name yet, and therefore, no symbol yet. */ | |
7b2060ba | 7706 | if (binding_label) |
c5d33754 | 7707 | { |
7708 | if (sym != NULL) | |
7b2060ba | 7709 | sym->binding_label = binding_label; |
c5d33754 | 7710 | else |
7b2060ba | 7711 | curr_binding_label = binding_label; |
c5d33754 | 7712 | } |
75ae7f6c | 7713 | else if (allow_binding_name) |
c5d33754 | 7714 | { |
7715 | /* No binding label, but if symbol isn't null, we | |
75ae7f6c | 7716 | can set the label for it here. |
7717 | If name="" or allow_binding_name is false, no C binding name is | |
293d72e0 | 7718 | created. */ |
c5d33754 | 7719 | if (sym != NULL && sym->name != NULL && has_name_equals == 0) |
7b2060ba | 7720 | sym->binding_label = IDENTIFIER_POINTER (get_identifier (sym->name)); |
c5d33754 | 7721 | } |
94fa7146 | 7722 | |
5cf92482 | 7723 | if (has_name_equals && gfc_current_state () == COMP_INTERFACE |
7724 | && current_interface.type == INTERFACE_ABSTRACT) | |
94fa7146 | 7725 | { |
7726 | gfc_error ("NAME not allowed on BIND(C) for ABSTRACT INTERFACE at %C"); | |
7727 | return MATCH_ERROR; | |
7728 | } | |
7729 | ||
c5d33754 | 7730 | return MATCH_YES; |
7731 | } | |
7732 | ||
7733 | ||
231e961a | 7734 | /* Return nonzero if we're currently compiling a contained procedure. */ |
c0985832 | 7735 | |
7736 | static int | |
7737 | contained_procedure (void) | |
7738 | { | |
1c343287 | 7739 | gfc_state_data *s = gfc_state_stack; |
c0985832 | 7740 | |
1c343287 | 7741 | if ((s->state == COMP_SUBROUTINE || s->state == COMP_FUNCTION) |
7742 | && s->previous != NULL && s->previous->state == COMP_CONTAINS) | |
7743 | return 1; | |
c0985832 | 7744 | |
7745 | return 0; | |
7746 | } | |
7747 | ||
e14bee04 | 7748 | /* Set the kind of each enumerator. The kind is selected such that it is |
3b6a4b41 | 7749 | interoperable with the corresponding C enumeration type, making |
7750 | sure that -fshort-enums is honored. */ | |
7751 | ||
7752 | static void | |
7753 | set_enum_kind(void) | |
7754 | { | |
7755 | enumerator_history *current_history = NULL; | |
7756 | int kind; | |
7757 | int i; | |
7758 | ||
7759 | if (max_enum == NULL || enum_history == NULL) | |
7760 | return; | |
7761 | ||
6f092e31 | 7762 | if (!flag_short_enums) |
e14bee04 | 7763 | return; |
7764 | ||
3b6a4b41 | 7765 | i = 0; |
7766 | do | |
7767 | { | |
7768 | kind = gfc_integer_kinds[i++].kind; | |
7769 | } | |
e14bee04 | 7770 | while (kind < gfc_c_int_kind |
3b6a4b41 | 7771 | && gfc_check_integer_range (max_enum->initializer->value.integer, |
7772 | kind) != ARITH_OK); | |
7773 | ||
7774 | current_history = enum_history; | |
7775 | while (current_history != NULL) | |
7776 | { | |
7777 | current_history->sym->ts.kind = kind; | |
7778 | current_history = current_history->next; | |
7779 | } | |
7780 | } | |
7781 | ||
1a9745d2 | 7782 | |
4ee9c684 | 7783 | /* Match any of the various end-block statements. Returns the type of |
6a7084d7 | 7784 | END to the caller. The END INTERFACE, END IF, END DO, END SELECT |
7785 | and END BLOCK statements cannot be replaced by a single END statement. */ | |
4ee9c684 | 7786 | |
7787 | match | |
1a9745d2 | 7788 | gfc_match_end (gfc_statement *st) |
4ee9c684 | 7789 | { |
7790 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
7791 | gfc_compile_state state; | |
7792 | locus old_loc; | |
7793 | const char *block_name; | |
7794 | const char *target; | |
c0985832 | 7795 | int eos_ok; |
4ee9c684 | 7796 | match m; |
9e5e87d9 | 7797 | gfc_namespace *parent_ns, *ns, *prev_ns; |
7798 | gfc_namespace **nsp; | |
6ade726e | 7799 | bool abreviated_modproc_decl = false; |
cc7124a6 | 7800 | bool got_matching_end = false; |
4ee9c684 | 7801 | |
cbb9e6aa | 7802 | old_loc = gfc_current_locus; |
4ee9c684 | 7803 | if (gfc_match ("end") != MATCH_YES) |
7804 | return MATCH_NO; | |
7805 | ||
7806 | state = gfc_current_state (); | |
1a9745d2 | 7807 | block_name = gfc_current_block () == NULL |
7808 | ? NULL : gfc_current_block ()->name; | |
4ee9c684 | 7809 | |
d18a512a | 7810 | switch (state) |
4ee9c684 | 7811 | { |
d18a512a | 7812 | case COMP_ASSOCIATE: |
7813 | case COMP_BLOCK: | |
ea9e8242 | 7814 | if (gfc_str_startswith (block_name, "block@")) |
d18a512a | 7815 | block_name = NULL; |
7816 | break; | |
7817 | ||
7818 | case COMP_CONTAINS: | |
7819 | case COMP_DERIVED_CONTAINS: | |
4ee9c684 | 7820 | state = gfc_state_stack->previous->state; |
1a9745d2 | 7821 | block_name = gfc_state_stack->previous->sym == NULL |
7822 | ? NULL : gfc_state_stack->previous->sym->name; | |
6ade726e | 7823 | abreviated_modproc_decl = gfc_state_stack->previous->sym |
7824 | && gfc_state_stack->previous->sym->abr_modproc_decl; | |
d18a512a | 7825 | break; |
7826 | ||
7827 | default: | |
7828 | break; | |
4ee9c684 | 7829 | } |
7830 | ||
6ade726e | 7831 | if (!abreviated_modproc_decl) |
7832 | abreviated_modproc_decl = gfc_current_block () | |
7833 | && gfc_current_block ()->abr_modproc_decl; | |
4b8eb6ca | 7834 | |
4ee9c684 | 7835 | switch (state) |
7836 | { | |
7837 | case COMP_NONE: | |
7838 | case COMP_PROGRAM: | |
7839 | *st = ST_END_PROGRAM; | |
7840 | target = " program"; | |
c0985832 | 7841 | eos_ok = 1; |
4ee9c684 | 7842 | break; |
7843 | ||
7844 | case COMP_SUBROUTINE: | |
7845 | *st = ST_END_SUBROUTINE; | |
4b8eb6ca | 7846 | if (!abreviated_modproc_decl) |
4ee9c684 | 7847 | target = " subroutine"; |
4b8eb6ca | 7848 | else |
7849 | target = " procedure"; | |
c0985832 | 7850 | eos_ok = !contained_procedure (); |
4ee9c684 | 7851 | break; |
7852 | ||
7853 | case COMP_FUNCTION: | |
7854 | *st = ST_END_FUNCTION; | |
4b8eb6ca | 7855 | if (!abreviated_modproc_decl) |
4ee9c684 | 7856 | target = " function"; |
4b8eb6ca | 7857 | else |
7858 | target = " procedure"; | |
c0985832 | 7859 | eos_ok = !contained_procedure (); |
4ee9c684 | 7860 | break; |
7861 | ||
7862 | case COMP_BLOCK_DATA: | |
7863 | *st = ST_END_BLOCK_DATA; | |
7864 | target = " block data"; | |
c0985832 | 7865 | eos_ok = 1; |
4ee9c684 | 7866 | break; |
7867 | ||
7868 | case COMP_MODULE: | |
7869 | *st = ST_END_MODULE; | |
7870 | target = " module"; | |
c0985832 | 7871 | eos_ok = 1; |
4ee9c684 | 7872 | break; |
7873 | ||
4b8eb6ca | 7874 | case COMP_SUBMODULE: |
7875 | *st = ST_END_SUBMODULE; | |
7876 | target = " submodule"; | |
7877 | eos_ok = 1; | |
7878 | break; | |
7879 | ||
4ee9c684 | 7880 | case COMP_INTERFACE: |
7881 | *st = ST_END_INTERFACE; | |
7882 | target = " interface"; | |
c0985832 | 7883 | eos_ok = 0; |
4ee9c684 | 7884 | break; |
7885 | ||
d7cd448a | 7886 | case COMP_MAP: |
7887 | *st = ST_END_MAP; | |
7888 | target = " map"; | |
7889 | eos_ok = 0; | |
7890 | break; | |
7891 | ||
7892 | case COMP_UNION: | |
7893 | *st = ST_END_UNION; | |
7894 | target = " union"; | |
7895 | eos_ok = 0; | |
7896 | break; | |
7897 | ||
7898 | case COMP_STRUCTURE: | |
7899 | *st = ST_END_STRUCTURE; | |
7900 | target = " structure"; | |
7901 | eos_ok = 0; | |
7902 | break; | |
7903 | ||
4ee9c684 | 7904 | case COMP_DERIVED: |
7fd88f6e | 7905 | case COMP_DERIVED_CONTAINS: |
4ee9c684 | 7906 | *st = ST_END_TYPE; |
7907 | target = " type"; | |
c0985832 | 7908 | eos_ok = 0; |
4ee9c684 | 7909 | break; |
7910 | ||
d18a512a | 7911 | case COMP_ASSOCIATE: |
7912 | *st = ST_END_ASSOCIATE; | |
7913 | target = " associate"; | |
7914 | eos_ok = 0; | |
7915 | break; | |
7916 | ||
6a7084d7 | 7917 | case COMP_BLOCK: |
7918 | *st = ST_END_BLOCK; | |
7919 | target = " block"; | |
7920 | eos_ok = 0; | |
7921 | break; | |
7922 | ||
4ee9c684 | 7923 | case COMP_IF: |
7924 | *st = ST_ENDIF; | |
7925 | target = " if"; | |
c0985832 | 7926 | eos_ok = 0; |
4ee9c684 | 7927 | break; |
7928 | ||
7929 | case COMP_DO: | |
55ea8666 | 7930 | case COMP_DO_CONCURRENT: |
4ee9c684 | 7931 | *st = ST_ENDDO; |
7932 | target = " do"; | |
c0985832 | 7933 | eos_ok = 0; |
4ee9c684 | 7934 | break; |
7935 | ||
c6cd3066 | 7936 | case COMP_CRITICAL: |
7937 | *st = ST_END_CRITICAL; | |
7938 | target = " critical"; | |
7939 | eos_ok = 0; | |
7940 | break; | |
7941 | ||
4ee9c684 | 7942 | case COMP_SELECT: |
1de1b1a9 | 7943 | case COMP_SELECT_TYPE: |
4ee9c684 | 7944 | *st = ST_END_SELECT; |
7945 | target = " select"; | |
c0985832 | 7946 | eos_ok = 0; |
4ee9c684 | 7947 | break; |
7948 | ||
7949 | case COMP_FORALL: | |
7950 | *st = ST_END_FORALL; | |
7951 | target = " forall"; | |
c0985832 | 7952 | eos_ok = 0; |
4ee9c684 | 7953 | break; |
7954 | ||
7955 | case COMP_WHERE: | |
7956 | *st = ST_END_WHERE; | |
7957 | target = " where"; | |
c0985832 | 7958 | eos_ok = 0; |
4ee9c684 | 7959 | break; |
7960 | ||
3b6a4b41 | 7961 | case COMP_ENUM: |
7962 | *st = ST_END_ENUM; | |
7963 | target = " enum"; | |
7964 | eos_ok = 0; | |
7965 | last_initializer = NULL; | |
7966 | set_enum_kind (); | |
7967 | gfc_free_enum_history (); | |
7968 | break; | |
7969 | ||
4ee9c684 | 7970 | default: |
7971 | gfc_error ("Unexpected END statement at %C"); | |
7972 | goto cleanup; | |
7973 | } | |
7974 | ||
8d779aef | 7975 | old_loc = gfc_current_locus; |
4ee9c684 | 7976 | if (gfc_match_eos () == MATCH_YES) |
7977 | { | |
4b20e9cf | 7978 | if (!eos_ok && (*st == ST_END_SUBROUTINE || *st == ST_END_FUNCTION)) |
7979 | { | |
60e19868 | 7980 | if (!gfc_notify_std (GFC_STD_F2008, "END statement " |
76e207a9 | 7981 | "instead of %s statement at %L", |
4b8eb6ca | 7982 | abreviated_modproc_decl ? "END PROCEDURE" |
7983 | : gfc_ascii_statement(*st), &old_loc)) | |
4b20e9cf | 7984 | goto cleanup; |
7985 | } | |
7986 | else if (!eos_ok) | |
4ee9c684 | 7987 | { |
f6d0e37a | 7988 | /* We would have required END [something]. */ |
d197c9ee | 7989 | gfc_error ("%s statement expected at %L", |
7990 | gfc_ascii_statement (*st), &old_loc); | |
4ee9c684 | 7991 | goto cleanup; |
7992 | } | |
7993 | ||
7994 | return MATCH_YES; | |
7995 | } | |
7996 | ||
7997 | /* Verify that we've got the sort of end-block that we're expecting. */ | |
7998 | if (gfc_match (target) != MATCH_YES) | |
7999 | { | |
4b8eb6ca | 8000 | gfc_error ("Expecting %s statement at %L", abreviated_modproc_decl |
8001 | ? "END PROCEDURE" : gfc_ascii_statement(*st), &old_loc); | |
4ee9c684 | 8002 | goto cleanup; |
8003 | } | |
cc7124a6 | 8004 | else |
8005 | got_matching_end = true; | |
4ee9c684 | 8006 | |
8d779aef | 8007 | old_loc = gfc_current_locus; |
4ee9c684 | 8008 | /* If we're at the end, make sure a block name wasn't required. */ |
8009 | if (gfc_match_eos () == MATCH_YES) | |
8010 | { | |
8011 | ||
0d0ce415 | 8012 | if (*st != ST_ENDDO && *st != ST_ENDIF && *st != ST_END_SELECT |
c6cd3066 | 8013 | && *st != ST_END_FORALL && *st != ST_END_WHERE && *st != ST_END_BLOCK |
d18a512a | 8014 | && *st != ST_END_ASSOCIATE && *st != ST_END_CRITICAL) |
4ee9c684 | 8015 | return MATCH_YES; |
8016 | ||
6a7084d7 | 8017 | if (!block_name) |
4ee9c684 | 8018 | return MATCH_YES; |
8019 | ||
716da296 | 8020 | gfc_error ("Expected block name of %qs in %s statement at %L", |
8d779aef | 8021 | block_name, gfc_ascii_statement (*st), &old_loc); |
4ee9c684 | 8022 | |
8023 | return MATCH_ERROR; | |
8024 | } | |
8025 | ||
8026 | /* END INTERFACE has a special handler for its several possible endings. */ | |
8027 | if (*st == ST_END_INTERFACE) | |
8028 | return gfc_match_end_interface (); | |
8029 | ||
f6d0e37a | 8030 | /* We haven't hit the end of statement, so what is left must be an |
8031 | end-name. */ | |
4ee9c684 | 8032 | m = gfc_match_space (); |
8033 | if (m == MATCH_YES) | |
8034 | m = gfc_match_name (name); | |
8035 | ||
8036 | if (m == MATCH_NO) | |
8037 | gfc_error ("Expected terminating name at %C"); | |
8038 | if (m != MATCH_YES) | |
8039 | goto cleanup; | |
8040 | ||
8041 | if (block_name == NULL) | |
8042 | goto syntax; | |
8043 | ||
df8f279f | 8044 | /* We have to pick out the declared submodule name from the composite |
8045 | required by F2008:11.2.3 para 2, which ends in the declared name. */ | |
8046 | if (state == COMP_SUBMODULE) | |
8047 | block_name = strchr (block_name, '.') + 1; | |
8048 | ||
1e057e9b | 8049 | if (strcmp (name, block_name) != 0 && strcmp (block_name, "ppr@") != 0) |
4ee9c684 | 8050 | { |
716da296 | 8051 | gfc_error ("Expected label %qs for %s statement at %C", block_name, |
4ee9c684 | 8052 | gfc_ascii_statement (*st)); |
8053 | goto cleanup; | |
8054 | } | |
1e057e9b | 8055 | /* Procedure pointer as function result. */ |
8056 | else if (strcmp (block_name, "ppr@") == 0 | |
8057 | && strcmp (name, gfc_current_block ()->ns->proc_name->name) != 0) | |
8058 | { | |
716da296 | 8059 | gfc_error ("Expected label %qs for %s statement at %C", |
1e057e9b | 8060 | gfc_current_block ()->ns->proc_name->name, |
8061 | gfc_ascii_statement (*st)); | |
8062 | goto cleanup; | |
8063 | } | |
4ee9c684 | 8064 | |
8065 | if (gfc_match_eos () == MATCH_YES) | |
8066 | return MATCH_YES; | |
8067 | ||
8068 | syntax: | |
8069 | gfc_syntax_error (*st); | |
8070 | ||
8071 | cleanup: | |
cbb9e6aa | 8072 | gfc_current_locus = old_loc; |
9e5e87d9 | 8073 | |
8074 | /* If we are missing an END BLOCK, we created a half-ready namespace. | |
8075 | Remove it from the parent namespace's sibling list. */ | |
8076 | ||
cc7124a6 | 8077 | while (state == COMP_BLOCK && !got_matching_end) |
9e5e87d9 | 8078 | { |
8079 | parent_ns = gfc_current_ns->parent; | |
8080 | ||
8081 | nsp = &(gfc_state_stack->previous->tail->ext.block.ns); | |
8082 | ||
8083 | prev_ns = NULL; | |
8084 | ns = *nsp; | |
8085 | while (ns) | |
8086 | { | |
8087 | if (ns == gfc_current_ns) | |
8088 | { | |
8089 | if (prev_ns == NULL) | |
8090 | *nsp = NULL; | |
8091 | else | |
8092 | prev_ns->sibling = ns->sibling; | |
8093 | } | |
8094 | prev_ns = ns; | |
8095 | ns = ns->sibling; | |
8096 | } | |
cc7124a6 | 8097 | |
9e5e87d9 | 8098 | gfc_free_namespace (gfc_current_ns); |
8099 | gfc_current_ns = parent_ns; | |
8097c1a6 | 8100 | gfc_state_stack = gfc_state_stack->previous; |
8101 | state = gfc_current_state (); | |
9e5e87d9 | 8102 | } |
8103 | ||
4ee9c684 | 8104 | return MATCH_ERROR; |
8105 | } | |
8106 | ||
8107 | ||
8108 | ||
8109 | /***************** Attribute declaration statements ****************/ | |
8110 | ||
8111 | /* Set the attribute of a single variable. */ | |
8112 | ||
8113 | static match | |
8114 | attr_decl1 (void) | |
8115 | { | |
8116 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8117 | gfc_array_spec *as; | |
75e5ecf3 | 8118 | |
8119 | /* Workaround -Wmaybe-uninitialized false positive during | |
8120 | profiledbootstrap by initializing them. */ | |
8121 | gfc_symbol *sym = NULL; | |
4ee9c684 | 8122 | locus var_locus; |
8123 | match m; | |
8124 | ||
8125 | as = NULL; | |
8126 | ||
8127 | m = gfc_match_name (name); | |
8128 | if (m != MATCH_YES) | |
8129 | goto cleanup; | |
8130 | ||
36b0a1b0 | 8131 | if (find_special (name, &sym, false)) |
4ee9c684 | 8132 | return MATCH_ERROR; |
8133 | ||
60e19868 | 8134 | if (!check_function_name (name)) |
f3e89339 | 8135 | { |
8136 | m = MATCH_ERROR; | |
8137 | goto cleanup; | |
8138 | } | |
8db94b3b | 8139 | |
cbb9e6aa | 8140 | var_locus = gfc_current_locus; |
4ee9c684 | 8141 | |
8142 | /* Deal with possible array specification for certain attributes. */ | |
8143 | if (current_attr.dimension | |
aff518b0 | 8144 | || current_attr.codimension |
4ee9c684 | 8145 | || current_attr.allocatable |
8146 | || current_attr.pointer | |
8147 | || current_attr.target) | |
8148 | { | |
aff518b0 | 8149 | m = gfc_match_array_spec (&as, !current_attr.codimension, |
8150 | !current_attr.dimension | |
8151 | && !current_attr.pointer | |
8152 | && !current_attr.target); | |
4ee9c684 | 8153 | if (m == MATCH_ERROR) |
8154 | goto cleanup; | |
8155 | ||
8156 | if (current_attr.dimension && m == MATCH_NO) | |
8157 | { | |
1a9745d2 | 8158 | gfc_error ("Missing array specification at %L in DIMENSION " |
8159 | "statement", &var_locus); | |
4ee9c684 | 8160 | m = MATCH_ERROR; |
8161 | goto cleanup; | |
8162 | } | |
8163 | ||
13aebeb0 | 8164 | if (current_attr.dimension && sym->value) |
8165 | { | |
8166 | gfc_error ("Dimensions specified for %s at %L after its " | |
d0abd9e0 | 8167 | "initialization", sym->name, &var_locus); |
13aebeb0 | 8168 | m = MATCH_ERROR; |
8169 | goto cleanup; | |
8170 | } | |
8171 | ||
aff518b0 | 8172 | if (current_attr.codimension && m == MATCH_NO) |
8173 | { | |
8174 | gfc_error ("Missing array specification at %L in CODIMENSION " | |
8175 | "statement", &var_locus); | |
8176 | m = MATCH_ERROR; | |
8177 | goto cleanup; | |
8178 | } | |
8179 | ||
4ee9c684 | 8180 | if ((current_attr.allocatable || current_attr.pointer) |
8181 | && (m == MATCH_YES) && (as->type != AS_DEFERRED)) | |
8182 | { | |
1a9745d2 | 8183 | gfc_error ("Array specification must be deferred at %L", &var_locus); |
4ee9c684 | 8184 | m = MATCH_ERROR; |
8185 | goto cleanup; | |
8186 | } | |
8187 | } | |
8188 | ||
b3704193 | 8189 | /* Update symbol table. DIMENSION attribute is set in |
8190 | gfc_set_array_spec(). For CLASS variables, this must be applied | |
607ae689 | 8191 | to the first component, or '_data' field. */ |
a33fbb6f | 8192 | if (sym->ts.type == BT_CLASS && sym->ts.u.derived->attr.is_class) |
4ee9c684 | 8193 | { |
60e19868 | 8194 | if (!gfc_copy_attr (&CLASS_DATA(sym)->attr, ¤t_attr, &var_locus)) |
b3704193 | 8195 | { |
8196 | m = MATCH_ERROR; | |
8197 | goto cleanup; | |
8198 | } | |
b3704193 | 8199 | } |
8200 | else | |
8201 | { | |
aff518b0 | 8202 | if (current_attr.dimension == 0 && current_attr.codimension == 0 |
60e19868 | 8203 | && !gfc_copy_attr (&sym->attr, ¤t_attr, &var_locus)) |
b3704193 | 8204 | { |
8205 | m = MATCH_ERROR; | |
8206 | goto cleanup; | |
8207 | } | |
4ee9c684 | 8208 | } |
8db94b3b | 8209 | |
fa102e56 | 8210 | if (sym->ts.type == BT_CLASS |
e8393d49 | 8211 | && !gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as)) |
29dae2bf | 8212 | { |
8213 | m = MATCH_ERROR; | |
8214 | goto cleanup; | |
8215 | } | |
4ee9c684 | 8216 | |
60e19868 | 8217 | if (!gfc_set_array_spec (sym, as, &var_locus)) |
4ee9c684 | 8218 | { |
8219 | m = MATCH_ERROR; | |
8220 | goto cleanup; | |
8221 | } | |
e14bee04 | 8222 | |
b549d2a5 | 8223 | if (sym->attr.cray_pointee && sym->as != NULL) |
8224 | { | |
8225 | /* Fix the array spec. */ | |
8db94b3b | 8226 | m = gfc_mod_pointee_as (sym->as); |
b549d2a5 | 8227 | if (m == MATCH_ERROR) |
8228 | goto cleanup; | |
8229 | } | |
4ee9c684 | 8230 | |
60e19868 | 8231 | if (!gfc_add_attribute (&sym->attr, &var_locus)) |
14efb9b7 | 8232 | { |
8233 | m = MATCH_ERROR; | |
8234 | goto cleanup; | |
8235 | } | |
8236 | ||
4ee9c684 | 8237 | if ((current_attr.external || current_attr.intrinsic) |
8238 | && sym->attr.flavor != FL_PROCEDURE | |
60e19868 | 8239 | && !gfc_add_flavor (&sym->attr, FL_PROCEDURE, sym->name, NULL)) |
4ee9c684 | 8240 | { |
8241 | m = MATCH_ERROR; | |
8242 | goto cleanup; | |
8243 | } | |
8244 | ||
1e057e9b | 8245 | add_hidden_procptr_result (sym); |
8246 | ||
4ee9c684 | 8247 | return MATCH_YES; |
8248 | ||
8249 | cleanup: | |
8250 | gfc_free_array_spec (as); | |
8251 | return m; | |
8252 | } | |
8253 | ||
8254 | ||
8255 | /* Generic attribute declaration subroutine. Used for attributes that | |
8256 | just have a list of names. */ | |
8257 | ||
8258 | static match | |
8259 | attr_decl (void) | |
8260 | { | |
8261 | match m; | |
8262 | ||
8263 | /* Gobble the optional double colon, by simply ignoring the result | |
8264 | of gfc_match(). */ | |
8265 | gfc_match (" ::"); | |
8266 | ||
8267 | for (;;) | |
8268 | { | |
8269 | m = attr_decl1 (); | |
8270 | if (m != MATCH_YES) | |
8271 | break; | |
8272 | ||
8273 | if (gfc_match_eos () == MATCH_YES) | |
8274 | { | |
8275 | m = MATCH_YES; | |
8276 | break; | |
8277 | } | |
8278 | ||
8279 | if (gfc_match_char (',') != MATCH_YES) | |
8280 | { | |
8281 | gfc_error ("Unexpected character in variable list at %C"); | |
8282 | m = MATCH_ERROR; | |
8283 | break; | |
8284 | } | |
8285 | } | |
8286 | ||
8287 | return m; | |
8288 | } | |
8289 | ||
8290 | ||
b549d2a5 | 8291 | /* This routine matches Cray Pointer declarations of the form: |
8292 | pointer ( <pointer>, <pointee> ) | |
8293 | or | |
e14bee04 | 8294 | pointer ( <pointer1>, <pointee1> ), ( <pointer2>, <pointee2> ), ... |
8295 | The pointer, if already declared, should be an integer. Otherwise, we | |
b549d2a5 | 8296 | set it as BT_INTEGER with kind gfc_index_integer_kind. The pointee may |
8297 | be either a scalar, or an array declaration. No space is allocated for | |
e14bee04 | 8298 | the pointee. For the statement |
b549d2a5 | 8299 | pointer (ipt, ar(10)) |
8300 | any subsequent uses of ar will be translated (in C-notation) as | |
e14bee04 | 8301 | ar(i) => ((<type> *) ipt)(i) |
b7bf3f81 | 8302 | After gimplification, pointee variable will disappear in the code. */ |
b549d2a5 | 8303 | |
8304 | static match | |
8305 | cray_pointer_decl (void) | |
8306 | { | |
8307 | match m; | |
aff518b0 | 8308 | gfc_array_spec *as = NULL; |
b549d2a5 | 8309 | gfc_symbol *cptr; /* Pointer symbol. */ |
8310 | gfc_symbol *cpte; /* Pointee symbol. */ | |
8311 | locus var_locus; | |
8312 | bool done = false; | |
8313 | ||
8314 | while (!done) | |
8315 | { | |
8316 | if (gfc_match_char ('(') != MATCH_YES) | |
8317 | { | |
0d2b3c9c | 8318 | gfc_error ("Expected %<(%> at %C"); |
e14bee04 | 8319 | return MATCH_ERROR; |
b549d2a5 | 8320 | } |
e14bee04 | 8321 | |
b549d2a5 | 8322 | /* Match pointer. */ |
8323 | var_locus = gfc_current_locus; | |
8324 | gfc_clear_attr (¤t_attr); | |
8325 | gfc_add_cray_pointer (¤t_attr, &var_locus); | |
8326 | current_ts.type = BT_INTEGER; | |
8327 | current_ts.kind = gfc_index_integer_kind; | |
8328 | ||
e14bee04 | 8329 | m = gfc_match_symbol (&cptr, 0); |
b549d2a5 | 8330 | if (m != MATCH_YES) |
8331 | { | |
8332 | gfc_error ("Expected variable name at %C"); | |
8333 | return m; | |
8334 | } | |
e14bee04 | 8335 | |
60e19868 | 8336 | if (!gfc_add_cray_pointer (&cptr->attr, &var_locus)) |
b549d2a5 | 8337 | return MATCH_ERROR; |
8338 | ||
e14bee04 | 8339 | gfc_set_sym_referenced (cptr); |
b549d2a5 | 8340 | |
8341 | if (cptr->ts.type == BT_UNKNOWN) /* Override the type, if necessary. */ | |
8342 | { | |
8343 | cptr->ts.type = BT_INTEGER; | |
e14bee04 | 8344 | cptr->ts.kind = gfc_index_integer_kind; |
b549d2a5 | 8345 | } |
8346 | else if (cptr->ts.type != BT_INTEGER) | |
8347 | { | |
7698a624 | 8348 | gfc_error ("Cray pointer at %C must be an integer"); |
b549d2a5 | 8349 | return MATCH_ERROR; |
8350 | } | |
8351 | else if (cptr->ts.kind < gfc_index_integer_kind) | |
6f521718 | 8352 | gfc_warning (0, "Cray pointer at %C has %d bytes of precision;" |
7698a624 | 8353 | " memory addresses require %d bytes", |
1a9745d2 | 8354 | cptr->ts.kind, gfc_index_integer_kind); |
b549d2a5 | 8355 | |
8356 | if (gfc_match_char (',') != MATCH_YES) | |
8357 | { | |
8358 | gfc_error ("Expected \",\" at %C"); | |
e14bee04 | 8359 | return MATCH_ERROR; |
b549d2a5 | 8360 | } |
8361 | ||
e14bee04 | 8362 | /* Match Pointee. */ |
b549d2a5 | 8363 | var_locus = gfc_current_locus; |
8364 | gfc_clear_attr (¤t_attr); | |
8365 | gfc_add_cray_pointee (¤t_attr, &var_locus); | |
8366 | current_ts.type = BT_UNKNOWN; | |
8367 | current_ts.kind = 0; | |
8368 | ||
8369 | m = gfc_match_symbol (&cpte, 0); | |
8370 | if (m != MATCH_YES) | |
8371 | { | |
8372 | gfc_error ("Expected variable name at %C"); | |
8373 | return m; | |
8374 | } | |
e14bee04 | 8375 | |
b549d2a5 | 8376 | /* Check for an optional array spec. */ |
aff518b0 | 8377 | m = gfc_match_array_spec (&as, true, false); |
b549d2a5 | 8378 | if (m == MATCH_ERROR) |
8379 | { | |
8380 | gfc_free_array_spec (as); | |
8381 | return m; | |
8382 | } | |
8383 | else if (m == MATCH_NO) | |
8384 | { | |
8385 | gfc_free_array_spec (as); | |
8386 | as = NULL; | |
8db94b3b | 8387 | } |
b549d2a5 | 8388 | |
60e19868 | 8389 | if (!gfc_add_cray_pointee (&cpte->attr, &var_locus)) |
b549d2a5 | 8390 | return MATCH_ERROR; |
8391 | ||
8392 | gfc_set_sym_referenced (cpte); | |
8393 | ||
8394 | if (cpte->as == NULL) | |
8395 | { | |
60e19868 | 8396 | if (!gfc_set_array_spec (cpte, as, &var_locus)) |
b549d2a5 | 8397 | gfc_internal_error ("Couldn't set Cray pointee array spec."); |
8398 | } | |
8399 | else if (as != NULL) | |
8400 | { | |
7698a624 | 8401 | gfc_error ("Duplicate array spec for Cray pointee at %C"); |
b549d2a5 | 8402 | gfc_free_array_spec (as); |
8403 | return MATCH_ERROR; | |
8404 | } | |
8db94b3b | 8405 | |
b549d2a5 | 8406 | as = NULL; |
8db94b3b | 8407 | |
b549d2a5 | 8408 | if (cpte->as != NULL) |
8409 | { | |
8410 | /* Fix array spec. */ | |
8411 | m = gfc_mod_pointee_as (cpte->as); | |
8412 | if (m == MATCH_ERROR) | |
8413 | return m; | |
8db94b3b | 8414 | } |
8415 | ||
b549d2a5 | 8416 | /* Point the Pointee at the Pointer. */ |
b7bf3f81 | 8417 | cpte->cp_pointer = cptr; |
b549d2a5 | 8418 | |
8419 | if (gfc_match_char (')') != MATCH_YES) | |
8420 | { | |
8421 | gfc_error ("Expected \")\" at %C"); | |
8db94b3b | 8422 | return MATCH_ERROR; |
b549d2a5 | 8423 | } |
8424 | m = gfc_match_char (','); | |
8425 | if (m != MATCH_YES) | |
8426 | done = true; /* Stop searching for more declarations. */ | |
8427 | ||
8428 | } | |
8db94b3b | 8429 | |
b549d2a5 | 8430 | if (m == MATCH_ERROR /* Failed when trying to find ',' above. */ |
8431 | || gfc_match_eos () != MATCH_YES) | |
8432 | { | |
0d2b3c9c | 8433 | gfc_error ("Expected %<,%> or end of statement at %C"); |
b549d2a5 | 8434 | return MATCH_ERROR; |
8435 | } | |
8436 | return MATCH_YES; | |
8437 | } | |
8438 | ||
8439 | ||
4ee9c684 | 8440 | match |
8441 | gfc_match_external (void) | |
8442 | { | |
8443 | ||
8444 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 8445 | current_attr.external = 1; |
4ee9c684 | 8446 | |
8447 | return attr_decl (); | |
8448 | } | |
8449 | ||
8450 | ||
4ee9c684 | 8451 | match |
8452 | gfc_match_intent (void) | |
8453 | { | |
8454 | sym_intent intent; | |
8455 | ||
6a7084d7 | 8456 | /* This is not allowed within a BLOCK construct! */ |
8457 | if (gfc_current_state () == COMP_BLOCK) | |
8458 | { | |
8459 | gfc_error ("INTENT is not allowed inside of BLOCK at %C"); | |
8460 | return MATCH_ERROR; | |
8461 | } | |
8462 | ||
4ee9c684 | 8463 | intent = match_intent_spec (); |
8464 | if (intent == INTENT_UNKNOWN) | |
8465 | return MATCH_ERROR; | |
8466 | ||
8467 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 8468 | current_attr.intent = intent; |
4ee9c684 | 8469 | |
8470 | return attr_decl (); | |
8471 | } | |
8472 | ||
8473 | ||
8474 | match | |
8475 | gfc_match_intrinsic (void) | |
8476 | { | |
8477 | ||
8478 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 8479 | current_attr.intrinsic = 1; |
4ee9c684 | 8480 | |
8481 | return attr_decl (); | |
8482 | } | |
8483 | ||
8484 | ||
8485 | match | |
8486 | gfc_match_optional (void) | |
8487 | { | |
6a7084d7 | 8488 | /* This is not allowed within a BLOCK construct! */ |
8489 | if (gfc_current_state () == COMP_BLOCK) | |
8490 | { | |
8491 | gfc_error ("OPTIONAL is not allowed inside of BLOCK at %C"); | |
8492 | return MATCH_ERROR; | |
8493 | } | |
4ee9c684 | 8494 | |
8495 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 8496 | current_attr.optional = 1; |
4ee9c684 | 8497 | |
8498 | return attr_decl (); | |
8499 | } | |
8500 | ||
8501 | ||
8502 | match | |
8503 | gfc_match_pointer (void) | |
8504 | { | |
b549d2a5 | 8505 | gfc_gobble_whitespace (); |
e0be6f02 | 8506 | if (gfc_peek_ascii_char () == '(') |
b549d2a5 | 8507 | { |
829d7a08 | 8508 | if (!flag_cray_pointer) |
b549d2a5 | 8509 | { |
1a9745d2 | 8510 | gfc_error ("Cray pointer declaration at %C requires -fcray-pointer " |
8511 | "flag"); | |
b549d2a5 | 8512 | return MATCH_ERROR; |
8513 | } | |
8514 | return cray_pointer_decl (); | |
8515 | } | |
8516 | else | |
8517 | { | |
8518 | gfc_clear_attr (¤t_attr); | |
14efb9b7 | 8519 | current_attr.pointer = 1; |
8db94b3b | 8520 | |
b549d2a5 | 8521 | return attr_decl (); |
8522 | } | |
4ee9c684 | 8523 | } |
8524 | ||
8525 | ||
8526 | match | |
8527 | gfc_match_allocatable (void) | |
8528 | { | |
4ee9c684 | 8529 | gfc_clear_attr (¤t_attr); |
14efb9b7 | 8530 | current_attr.allocatable = 1; |
4ee9c684 | 8531 | |
8532 | return attr_decl (); | |
8533 | } | |
8534 | ||
8535 | ||
aff518b0 | 8536 | match |
8537 | gfc_match_codimension (void) | |
8538 | { | |
8539 | gfc_clear_attr (¤t_attr); | |
8540 | current_attr.codimension = 1; | |
8541 | ||
8542 | return attr_decl (); | |
8543 | } | |
8544 | ||
8545 | ||
b3c3927c | 8546 | match |
8547 | gfc_match_contiguous (void) | |
8548 | { | |
60e19868 | 8549 | if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS statement at %C")) |
b3c3927c | 8550 | return MATCH_ERROR; |
8551 | ||
8552 | gfc_clear_attr (¤t_attr); | |
8553 | current_attr.contiguous = 1; | |
8554 | ||
8555 | return attr_decl (); | |
8556 | } | |
8557 | ||
8558 | ||
4ee9c684 | 8559 | match |
8560 | gfc_match_dimension (void) | |
8561 | { | |
4ee9c684 | 8562 | gfc_clear_attr (¤t_attr); |
14efb9b7 | 8563 | current_attr.dimension = 1; |
4ee9c684 | 8564 | |
8565 | return attr_decl (); | |
8566 | } | |
8567 | ||
8568 | ||
8569 | match | |
8570 | gfc_match_target (void) | |
8571 | { | |
4ee9c684 | 8572 | gfc_clear_attr (¤t_attr); |
14efb9b7 | 8573 | current_attr.target = 1; |
4ee9c684 | 8574 | |
8575 | return attr_decl (); | |
8576 | } | |
8577 | ||
8578 | ||
8579 | /* Match the list of entities being specified in a PUBLIC or PRIVATE | |
8580 | statement. */ | |
8581 | ||
8582 | static match | |
8583 | access_attr_decl (gfc_statement st) | |
8584 | { | |
8585 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
8586 | interface_type type; | |
8587 | gfc_user_op *uop; | |
c2958b6b | 8588 | gfc_symbol *sym, *dt_sym; |
dcb1b019 | 8589 | gfc_intrinsic_op op; |
4ee9c684 | 8590 | match m; |
8591 | ||
8592 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8593 | goto done; | |
8594 | ||
8595 | for (;;) | |
8596 | { | |
dcb1b019 | 8597 | m = gfc_match_generic_spec (&type, name, &op); |
4ee9c684 | 8598 | if (m == MATCH_NO) |
8599 | goto syntax; | |
8600 | if (m == MATCH_ERROR) | |
8601 | return MATCH_ERROR; | |
8602 | ||
8603 | switch (type) | |
8604 | { | |
8605 | case INTERFACE_NAMELESS: | |
94fa7146 | 8606 | case INTERFACE_ABSTRACT: |
4ee9c684 | 8607 | goto syntax; |
8608 | ||
8609 | case INTERFACE_GENERIC: | |
9f732c4e | 8610 | case INTERFACE_DTIO: |
2f78ea2e | 8611 | |
4ee9c684 | 8612 | if (gfc_get_symbol (name, NULL, &sym)) |
8613 | goto done; | |
8614 | ||
7966c683 | 8615 | if (type == INTERFACE_DTIO |
8616 | && gfc_current_ns->proc_name | |
8617 | && gfc_current_ns->proc_name->attr.flavor == FL_MODULE | |
8618 | && sym->attr.flavor == FL_UNKNOWN) | |
8619 | sym->attr.flavor = FL_PROCEDURE; | |
8620 | ||
76e207a9 | 8621 | if (!gfc_add_access (&sym->attr, |
8622 | (st == ST_PUBLIC) | |
8623 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
60e19868 | 8624 | sym->name, NULL)) |
4ee9c684 | 8625 | return MATCH_ERROR; |
8626 | ||
c2958b6b | 8627 | if (sym->attr.generic && (dt_sym = gfc_find_dt_in_generic (sym)) |
76e207a9 | 8628 | && !gfc_add_access (&dt_sym->attr, |
8629 | (st == ST_PUBLIC) | |
8630 | ? ACCESS_PUBLIC : ACCESS_PRIVATE, | |
60e19868 | 8631 | sym->name, NULL)) |
c2958b6b | 8632 | return MATCH_ERROR; |
8633 | ||
4ee9c684 | 8634 | break; |
8635 | ||
8636 | case INTERFACE_INTRINSIC_OP: | |
dcb1b019 | 8637 | if (gfc_current_ns->operator_access[op] == ACCESS_UNKNOWN) |
4ee9c684 | 8638 | { |
0c482c1d | 8639 | gfc_intrinsic_op other_op; |
8640 | ||
dcb1b019 | 8641 | gfc_current_ns->operator_access[op] = |
4ee9c684 | 8642 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; |
0c482c1d | 8643 | |
8644 | /* Handle the case if there is another op with the same | |
8645 | function, for INTRINSIC_EQ vs. INTRINSIC_EQ_OS and so on. */ | |
8646 | other_op = gfc_equivalent_op (op); | |
8647 | ||
8648 | if (other_op != INTRINSIC_NONE) | |
8649 | gfc_current_ns->operator_access[other_op] = | |
8650 | (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
8651 | ||
4ee9c684 | 8652 | } |
8653 | else | |
8654 | { | |
8655 | gfc_error ("Access specification of the %s operator at %C has " | |
dcb1b019 | 8656 | "already been specified", gfc_op2string (op)); |
4ee9c684 | 8657 | goto done; |
8658 | } | |
8659 | ||
8660 | break; | |
8661 | ||
8662 | case INTERFACE_USER_OP: | |
8663 | uop = gfc_get_uop (name); | |
8664 | ||
8665 | if (uop->access == ACCESS_UNKNOWN) | |
8666 | { | |
1a9745d2 | 8667 | uop->access = (st == ST_PUBLIC) |
8668 | ? ACCESS_PUBLIC : ACCESS_PRIVATE; | |
4ee9c684 | 8669 | } |
8670 | else | |
8671 | { | |
1a9745d2 | 8672 | gfc_error ("Access specification of the .%s. operator at %C " |
8673 | "has already been specified", sym->name); | |
4ee9c684 | 8674 | goto done; |
8675 | } | |
8676 | ||
8677 | break; | |
8678 | } | |
8679 | ||
8680 | if (gfc_match_char (',') == MATCH_NO) | |
8681 | break; | |
8682 | } | |
8683 | ||
8684 | if (gfc_match_eos () != MATCH_YES) | |
8685 | goto syntax; | |
8686 | return MATCH_YES; | |
8687 | ||
8688 | syntax: | |
8689 | gfc_syntax_error (st); | |
8690 | ||
8691 | done: | |
8692 | return MATCH_ERROR; | |
8693 | } | |
8694 | ||
8695 | ||
3ea52af3 | 8696 | match |
8697 | gfc_match_protected (void) | |
8698 | { | |
8699 | gfc_symbol *sym; | |
8700 | match m; | |
8701 | ||
54c0257b | 8702 | if (!gfc_current_ns->proc_name |
8703 | || gfc_current_ns->proc_name->attr.flavor != FL_MODULE) | |
3ea52af3 | 8704 | { |
8705 | gfc_error ("PROTECTED at %C only allowed in specification " | |
8706 | "part of a module"); | |
8707 | return MATCH_ERROR; | |
8708 | ||
8709 | } | |
8710 | ||
60e19868 | 8711 | if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED statement at %C")) |
3ea52af3 | 8712 | return MATCH_ERROR; |
8713 | ||
8714 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
8715 | { | |
8716 | return MATCH_ERROR; | |
8717 | } | |
8718 | ||
8719 | if (gfc_match_eos () == MATCH_YES) | |
8720 | goto syntax; | |
8721 | ||
8722 | for(;;) | |
8723 | { | |
8724 | m = gfc_match_symbol (&sym, 0); | |
8725 | switch (m) | |
8726 | { | |
8727 | case MATCH_YES: | |
60e19868 | 8728 | if (!gfc_add_protected (&sym->attr, sym->name, &gfc_current_locus)) |
3ea52af3 | 8729 | return MATCH_ERROR; |
8730 | goto next_item; | |
8731 | ||
8732 | case MATCH_NO: | |
8733 | break; | |
8734 | ||
8735 | case MATCH_ERROR: | |
8736 | return MATCH_ERROR; | |
8737 | } | |
8738 | ||
8739 | next_item: | |
8740 | if (gfc_match_eos () == MATCH_YES) | |
8741 | break; | |
8742 | if (gfc_match_char (',') != MATCH_YES) | |
8743 | goto syntax; | |
8744 | } | |
8745 | ||
8746 | return MATCH_YES; | |
8747 | ||
8748 | syntax: | |
8749 | gfc_error ("Syntax error in PROTECTED statement at %C"); | |
8750 | return MATCH_ERROR; | |
8751 | } | |
8752 | ||
8753 | ||
a0527218 | 8754 | /* The PRIVATE statement is a bit weird in that it can be an attribute |
69b1505f | 8755 | declaration, but also works as a standalone statement inside of a |
4ee9c684 | 8756 | type declaration or a module. */ |
8757 | ||
8758 | match | |
1a9745d2 | 8759 | gfc_match_private (gfc_statement *st) |
4ee9c684 | 8760 | { |
8761 | ||
8762 | if (gfc_match ("private") != MATCH_YES) | |
8763 | return MATCH_NO; | |
8764 | ||
e14bee04 | 8765 | if (gfc_current_state () != COMP_MODULE |
7fd88f6e | 8766 | && !(gfc_current_state () == COMP_DERIVED |
8767 | && gfc_state_stack->previous | |
8768 | && gfc_state_stack->previous->state == COMP_MODULE) | |
8769 | && !(gfc_current_state () == COMP_DERIVED_CONTAINS | |
8770 | && gfc_state_stack->previous && gfc_state_stack->previous->previous | |
8771 | && gfc_state_stack->previous->previous->state == COMP_MODULE)) | |
e14bee04 | 8772 | { |
8773 | gfc_error ("PRIVATE statement at %C is only allowed in the " | |
8774 | "specification part of a module"); | |
8775 | return MATCH_ERROR; | |
8776 | } | |
8777 | ||
4ee9c684 | 8778 | if (gfc_current_state () == COMP_DERIVED) |
8779 | { | |
8780 | if (gfc_match_eos () == MATCH_YES) | |
8781 | { | |
8782 | *st = ST_PRIVATE; | |
8783 | return MATCH_YES; | |
8784 | } | |
8785 | ||
8786 | gfc_syntax_error (ST_PRIVATE); | |
8787 | return MATCH_ERROR; | |
8788 | } | |
8789 | ||
8790 | if (gfc_match_eos () == MATCH_YES) | |
8791 | { | |
8792 | *st = ST_PRIVATE; | |
8793 | return MATCH_YES; | |
8794 | } | |
8795 | ||
8796 | *st = ST_ATTR_DECL; | |
8797 | return access_attr_decl (ST_PRIVATE); | |
8798 | } | |
8799 | ||
8800 | ||
8801 | match | |
1a9745d2 | 8802 | gfc_match_public (gfc_statement *st) |
4ee9c684 | 8803 | { |
8804 | ||
8805 | if (gfc_match ("public") != MATCH_YES) | |
8806 | return MATCH_NO; | |
8807 | ||
e14bee04 | 8808 | if (gfc_current_state () != COMP_MODULE) |
8809 | { | |
8810 | gfc_error ("PUBLIC statement at %C is only allowed in the " | |
8811 | "specification part of a module"); | |
8812 | return MATCH_ERROR; | |
8813 | } | |
8814 | ||
4ee9c684 | 8815 | if (gfc_match_eos () == MATCH_YES) |
8816 | { | |
8817 | *st = ST_PUBLIC; | |
8818 | return MATCH_YES; | |
8819 | } | |
8820 | ||
8821 | *st = ST_ATTR_DECL; | |
8822 | return access_attr_decl (ST_PUBLIC); | |
8823 | } | |
8824 | ||
8825 | ||
8826 | /* Workhorse for gfc_match_parameter. */ | |
8827 | ||
8828 | static match | |
8829 | do_parm (void) | |
8830 | { | |
8831 | gfc_symbol *sym; | |
8832 | gfc_expr *init; | |
8833 | match m; | |
60e19868 | 8834 | bool t; |
4ee9c684 | 8835 | |
8836 | m = gfc_match_symbol (&sym, 0); | |
8837 | if (m == MATCH_NO) | |
8838 | gfc_error ("Expected variable name at %C in PARAMETER statement"); | |
8839 | ||
8840 | if (m != MATCH_YES) | |
8841 | return m; | |
8842 | ||
8843 | if (gfc_match_char ('=') == MATCH_NO) | |
8844 | { | |
8845 | gfc_error ("Expected = sign in PARAMETER statement at %C"); | |
8846 | return MATCH_ERROR; | |
8847 | } | |
8848 | ||
8849 | m = gfc_match_init_expr (&init); | |
8850 | if (m == MATCH_NO) | |
8851 | gfc_error ("Expected expression at %C in PARAMETER statement"); | |
8852 | if (m != MATCH_YES) | |
8853 | return m; | |
8854 | ||
8855 | if (sym->ts.type == BT_UNKNOWN | |
60e19868 | 8856 | && !gfc_set_default_type (sym, 1, NULL)) |
4ee9c684 | 8857 | { |
8858 | m = MATCH_ERROR; | |
8859 | goto cleanup; | |
8860 | } | |
8861 | ||
60e19868 | 8862 | if (!gfc_check_assign_symbol (sym, NULL, init) |
8863 | || !gfc_add_flavor (&sym->attr, FL_PARAMETER, sym->name, NULL)) | |
4ee9c684 | 8864 | { |
8865 | m = MATCH_ERROR; | |
8866 | goto cleanup; | |
8867 | } | |
8868 | ||
13aebeb0 | 8869 | if (sym->value) |
8870 | { | |
8871 | gfc_error ("Initializing already initialized variable at %C"); | |
8872 | m = MATCH_ERROR; | |
8873 | goto cleanup; | |
8874 | } | |
8875 | ||
f16404e3 | 8876 | t = add_init_expr_to_sym (sym->name, &init, &gfc_current_locus); |
60e19868 | 8877 | return (t) ? MATCH_YES : MATCH_ERROR; |
4ee9c684 | 8878 | |
8879 | cleanup: | |
8880 | gfc_free_expr (init); | |
8881 | return m; | |
8882 | } | |
8883 | ||
8884 | ||
8885 | /* Match a parameter statement, with the weird syntax that these have. */ | |
8886 | ||
8887 | match | |
8888 | gfc_match_parameter (void) | |
8889 | { | |
2c628787 | 8890 | const char *term = " )%t"; |
4ee9c684 | 8891 | match m; |
8892 | ||
8893 | if (gfc_match_char ('(') == MATCH_NO) | |
2c628787 | 8894 | { |
8895 | /* With legacy PARAMETER statements, don't expect a terminating ')'. */ | |
8896 | if (!gfc_notify_std (GFC_STD_LEGACY, "PARAMETER without '()' at %C")) | |
8897 | return MATCH_NO; | |
8898 | term = " %t"; | |
8899 | } | |
4ee9c684 | 8900 | |
8901 | for (;;) | |
8902 | { | |
8903 | m = do_parm (); | |
8904 | if (m != MATCH_YES) | |
8905 | break; | |
8906 | ||
2c628787 | 8907 | if (gfc_match (term) == MATCH_YES) |
4ee9c684 | 8908 | break; |
8909 | ||
8910 | if (gfc_match_char (',') != MATCH_YES) | |
8911 | { | |
8912 | gfc_error ("Unexpected characters in PARAMETER statement at %C"); | |
8913 | m = MATCH_ERROR; | |
8914 | break; | |
8915 | } | |
8916 | } | |
8917 | ||
8918 | return m; | |
8919 | } | |
8920 | ||
8921 | ||
8e652fcf | 8922 | match |
8923 | gfc_match_automatic (void) | |
8924 | { | |
8925 | gfc_symbol *sym; | |
8926 | match m; | |
8927 | bool seen_symbol = false; | |
8928 | ||
8929 | if (!flag_dec_static) | |
8930 | { | |
841da9cf | 8931 | gfc_error ("%s at %C is a DEC extension, enable with " |
8932 | "%<-fdec-static%>", | |
8933 | "AUTOMATIC" | |
8934 | ); | |
8e652fcf | 8935 | return MATCH_ERROR; |
8936 | } | |
8937 | ||
8938 | gfc_match (" ::"); | |
8939 | ||
8940 | for (;;) | |
8941 | { | |
8942 | m = gfc_match_symbol (&sym, 0); | |
8943 | switch (m) | |
8944 | { | |
8945 | case MATCH_NO: | |
8946 | break; | |
8947 | ||
8948 | case MATCH_ERROR: | |
8949 | return MATCH_ERROR; | |
8950 | ||
8951 | case MATCH_YES: | |
8952 | if (!gfc_add_automatic (&sym->attr, sym->name, &gfc_current_locus)) | |
8953 | return MATCH_ERROR; | |
8954 | seen_symbol = true; | |
8955 | break; | |
8956 | } | |
8957 | ||
8958 | if (gfc_match_eos () == MATCH_YES) | |
8959 | break; | |
8960 | if (gfc_match_char (',') != MATCH_YES) | |
8961 | goto syntax; | |
8962 | } | |
8963 | ||
8964 | if (!seen_symbol) | |
8965 | { | |
8966 | gfc_error ("Expected entity-list in AUTOMATIC statement at %C"); | |
8967 | return MATCH_ERROR; | |
8968 | } | |
8969 | ||
8970 | return MATCH_YES; | |
8971 | ||
8972 | syntax: | |
8973 | gfc_error ("Syntax error in AUTOMATIC statement at %C"); | |
8974 | return MATCH_ERROR; | |
8975 | } | |
8976 | ||
8977 | ||
8978 | match | |
8979 | gfc_match_static (void) | |
8980 | { | |
8981 | gfc_symbol *sym; | |
8982 | match m; | |
8983 | bool seen_symbol = false; | |
8984 | ||
8985 | if (!flag_dec_static) | |
8986 | { | |
841da9cf | 8987 | gfc_error ("%s at %C is a DEC extension, enable with " |
8988 | "%<-fdec-static%>", | |
8989 | "STATIC"); | |
8e652fcf | 8990 | return MATCH_ERROR; |
8991 | } | |
8992 | ||
8993 | gfc_match (" ::"); | |
8994 | ||
8995 | for (;;) | |
8996 | { | |
8997 | m = gfc_match_symbol (&sym, 0); | |
8998 | switch (m) | |
8999 | { | |
9000 | case MATCH_NO: | |
9001 | break; | |
9002 | ||
9003 | case MATCH_ERROR: | |
9004 | return MATCH_ERROR; | |
9005 | ||
9006 | case MATCH_YES: | |
9007 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, | |
9008 | &gfc_current_locus)) | |
9009 | return MATCH_ERROR; | |
9010 | seen_symbol = true; | |
9011 | break; | |
9012 | } | |
9013 | ||
9014 | if (gfc_match_eos () == MATCH_YES) | |
9015 | break; | |
9016 | if (gfc_match_char (',') != MATCH_YES) | |
9017 | goto syntax; | |
9018 | } | |
9019 | ||
9020 | if (!seen_symbol) | |
9021 | { | |
9022 | gfc_error ("Expected entity-list in STATIC statement at %C"); | |
9023 | return MATCH_ERROR; | |
9024 | } | |
9025 | ||
9026 | return MATCH_YES; | |
9027 | ||
9028 | syntax: | |
9029 | gfc_error ("Syntax error in STATIC statement at %C"); | |
9030 | return MATCH_ERROR; | |
9031 | } | |
9032 | ||
9033 | ||
4ee9c684 | 9034 | /* Save statements have a special syntax. */ |
9035 | ||
9036 | match | |
9037 | gfc_match_save (void) | |
9038 | { | |
82f5ee13 | 9039 | char n[GFC_MAX_SYMBOL_LEN+1]; |
9040 | gfc_common_head *c; | |
4ee9c684 | 9041 | gfc_symbol *sym; |
9042 | match m; | |
9043 | ||
9044 | if (gfc_match_eos () == MATCH_YES) | |
9045 | { | |
9046 | if (gfc_current_ns->seen_save) | |
9047 | { | |
60e19868 | 9048 | if (!gfc_notify_std (GFC_STD_LEGACY, "Blanket SAVE statement at %C " |
9049 | "follows previous SAVE statement")) | |
76e82f95 | 9050 | return MATCH_ERROR; |
4ee9c684 | 9051 | } |
9052 | ||
9053 | gfc_current_ns->save_all = gfc_current_ns->seen_save = 1; | |
9054 | return MATCH_YES; | |
9055 | } | |
9056 | ||
9057 | if (gfc_current_ns->save_all) | |
9058 | { | |
60e19868 | 9059 | if (!gfc_notify_std (GFC_STD_LEGACY, "SAVE statement at %C follows " |
9060 | "blanket SAVE statement")) | |
76e82f95 | 9061 | return MATCH_ERROR; |
4ee9c684 | 9062 | } |
9063 | ||
9064 | gfc_match (" ::"); | |
9065 | ||
9066 | for (;;) | |
9067 | { | |
9068 | m = gfc_match_symbol (&sym, 0); | |
9069 | switch (m) | |
9070 | { | |
9071 | case MATCH_YES: | |
76e207a9 | 9072 | if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name, |
60e19868 | 9073 | &gfc_current_locus)) |
4ee9c684 | 9074 | return MATCH_ERROR; |
9075 | goto next_item; | |
9076 | ||
9077 | case MATCH_NO: | |
9078 | break; | |
9079 | ||
9080 | case MATCH_ERROR: | |
9081 | return MATCH_ERROR; | |
9082 | } | |
9083 | ||
82f5ee13 | 9084 | m = gfc_match (" / %n /", &n); |
4ee9c684 | 9085 | if (m == MATCH_ERROR) |
9086 | return MATCH_ERROR; | |
9087 | if (m == MATCH_NO) | |
9088 | goto syntax; | |
9089 | ||
403ddc45 | 9090 | c = gfc_get_common (n, 0); |
82f5ee13 | 9091 | c->saved = 1; |
9092 | ||
4ee9c684 | 9093 | gfc_current_ns->seen_save = 1; |
9094 | ||
9095 | next_item: | |
9096 | if (gfc_match_eos () == MATCH_YES) | |
9097 | break; | |
9098 | if (gfc_match_char (',') != MATCH_YES) | |
9099 | goto syntax; | |
9100 | } | |
9101 | ||
9102 | return MATCH_YES; | |
9103 | ||
9104 | syntax: | |
9105 | gfc_error ("Syntax error in SAVE statement at %C"); | |
9106 | return MATCH_ERROR; | |
9107 | } | |
9108 | ||
9109 | ||
8f6339b6 | 9110 | match |
9111 | gfc_match_value (void) | |
9112 | { | |
9113 | gfc_symbol *sym; | |
9114 | match m; | |
9115 | ||
6a7084d7 | 9116 | /* This is not allowed within a BLOCK construct! */ |
9117 | if (gfc_current_state () == COMP_BLOCK) | |
9118 | { | |
9119 | gfc_error ("VALUE is not allowed inside of BLOCK at %C"); | |
9120 | return MATCH_ERROR; | |
9121 | } | |
9122 | ||
60e19868 | 9123 | if (!gfc_notify_std (GFC_STD_F2003, "VALUE statement at %C")) |
8f6339b6 | 9124 | return MATCH_ERROR; |
9125 | ||
9126 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9127 | { | |
9128 | return MATCH_ERROR; | |
9129 | } | |
9130 | ||
9131 | if (gfc_match_eos () == MATCH_YES) | |
9132 | goto syntax; | |
9133 | ||
9134 | for(;;) | |
9135 | { | |
9136 | m = gfc_match_symbol (&sym, 0); | |
9137 | switch (m) | |
9138 | { | |
9139 | case MATCH_YES: | |
60e19868 | 9140 | if (!gfc_add_value (&sym->attr, sym->name, &gfc_current_locus)) |
8f6339b6 | 9141 | return MATCH_ERROR; |
9142 | goto next_item; | |
9143 | ||
9144 | case MATCH_NO: | |
9145 | break; | |
9146 | ||
9147 | case MATCH_ERROR: | |
9148 | return MATCH_ERROR; | |
9149 | } | |
9150 | ||
9151 | next_item: | |
9152 | if (gfc_match_eos () == MATCH_YES) | |
9153 | break; | |
9154 | if (gfc_match_char (',') != MATCH_YES) | |
9155 | goto syntax; | |
9156 | } | |
9157 | ||
9158 | return MATCH_YES; | |
9159 | ||
9160 | syntax: | |
9161 | gfc_error ("Syntax error in VALUE statement at %C"); | |
9162 | return MATCH_ERROR; | |
9163 | } | |
9164 | ||
f6d0e37a | 9165 | |
ef814c81 | 9166 | match |
9167 | gfc_match_volatile (void) | |
9168 | { | |
9169 | gfc_symbol *sym; | |
2c6ca8fc | 9170 | char *name; |
ef814c81 | 9171 | match m; |
9172 | ||
60e19868 | 9173 | if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE statement at %C")) |
ef814c81 | 9174 | return MATCH_ERROR; |
9175 | ||
9176 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9177 | { | |
9178 | return MATCH_ERROR; | |
9179 | } | |
9180 | ||
9181 | if (gfc_match_eos () == MATCH_YES) | |
9182 | goto syntax; | |
9183 | ||
9184 | for(;;) | |
9185 | { | |
8db94b3b | 9186 | /* VOLATILE is special because it can be added to host-associated |
293d72e0 | 9187 | symbols locally. Except for coarrays. */ |
2f241857 | 9188 | m = gfc_match_symbol (&sym, 1); |
ef814c81 | 9189 | switch (m) |
9190 | { | |
9191 | case MATCH_YES: | |
2c6ca8fc | 9192 | name = XCNEWVAR (char, strlen (sym->name) + 1); |
9193 | strcpy (name, sym->name); | |
9194 | if (!check_function_name (name)) | |
9195 | return MATCH_ERROR; | |
aff518b0 | 9196 | /* F2008, C560+C561. VOLATILE for host-/use-associated variable or |
9197 | for variable in a BLOCK which is defined outside of the BLOCK. */ | |
9198 | if (sym->ns != gfc_current_ns && sym->attr.codimension) | |
9199 | { | |
716da296 | 9200 | gfc_error ("Specifying VOLATILE for coarray variable %qs at " |
aff518b0 | 9201 | "%C, which is use-/host-associated", sym->name); |
9202 | return MATCH_ERROR; | |
9203 | } | |
60e19868 | 9204 | if (!gfc_add_volatile (&sym->attr, sym->name, &gfc_current_locus)) |
ef814c81 | 9205 | return MATCH_ERROR; |
9206 | goto next_item; | |
9207 | ||
9208 | case MATCH_NO: | |
9209 | break; | |
9210 | ||
9211 | case MATCH_ERROR: | |
9212 | return MATCH_ERROR; | |
9213 | } | |
9214 | ||
9215 | next_item: | |
9216 | if (gfc_match_eos () == MATCH_YES) | |
9217 | break; | |
9218 | if (gfc_match_char (',') != MATCH_YES) | |
9219 | goto syntax; | |
9220 | } | |
9221 | ||
9222 | return MATCH_YES; | |
9223 | ||
9224 | syntax: | |
9225 | gfc_error ("Syntax error in VOLATILE statement at %C"); | |
9226 | return MATCH_ERROR; | |
9227 | } | |
9228 | ||
9229 | ||
738928be | 9230 | match |
9231 | gfc_match_asynchronous (void) | |
9232 | { | |
9233 | gfc_symbol *sym; | |
2c6ca8fc | 9234 | char *name; |
738928be | 9235 | match m; |
9236 | ||
60e19868 | 9237 | if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS statement at %C")) |
738928be | 9238 | return MATCH_ERROR; |
9239 | ||
9240 | if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO) | |
9241 | { | |
9242 | return MATCH_ERROR; | |
9243 | } | |
9244 | ||
9245 | if (gfc_match_eos () == MATCH_YES) | |
9246 | goto syntax; | |
9247 | ||
9248 | for(;;) | |
9249 | { | |
8db94b3b | 9250 | /* ASYNCHRONOUS is special because it can be added to host-associated |
738928be | 9251 | symbols locally. */ |
9252 | m = gfc_match_symbol (&sym, 1); | |
9253 | switch (m) | |
9254 | { | |
9255 | case MATCH_YES: | |
2c6ca8fc | 9256 | name = XCNEWVAR (char, strlen (sym->name) + 1); |
9257 | strcpy (name, sym->name); | |
9258 | if (!check_function_name (name)) | |
9259 | return MATCH_ERROR; | |
60e19868 | 9260 | if (!gfc_add_asynchronous (&sym->attr, sym->name, &gfc_current_locus)) |
738928be | 9261 | return MATCH_ERROR; |
9262 | goto next_item; | |
9263 | ||
9264 | case MATCH_NO: | |
9265 | break; | |
9266 | ||
9267 | case MATCH_ERROR: | |
9268 | return MATCH_ERROR; | |
9269 | } | |
9270 | ||
9271 | next_item: | |
9272 | if (gfc_match_eos () == MATCH_YES) | |
9273 | break; | |
9274 | if (gfc_match_char (',') != MATCH_YES) | |
9275 | goto syntax; | |
9276 | } | |
9277 | ||
9278 | return MATCH_YES; | |
9279 | ||
9280 | syntax: | |
9281 | gfc_error ("Syntax error in ASYNCHRONOUS statement at %C"); | |
9282 | return MATCH_ERROR; | |
9283 | } | |
9284 | ||
9285 | ||
4b8eb6ca | 9286 | /* Match a module procedure statement in a submodule. */ |
9287 | ||
9288 | match | |
9289 | gfc_match_submod_proc (void) | |
9290 | { | |
9291 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9292 | gfc_symbol *sym, *fsym; | |
9293 | match m; | |
9294 | gfc_formal_arglist *formal, *head, *tail; | |
9295 | ||
9296 | if (gfc_current_state () != COMP_CONTAINS | |
9297 | || !(gfc_state_stack->previous | |
76e207a9 | 9298 | && (gfc_state_stack->previous->state == COMP_SUBMODULE |
9299 | || gfc_state_stack->previous->state == COMP_MODULE))) | |
4b8eb6ca | 9300 | return MATCH_NO; |
9301 | ||
9302 | m = gfc_match (" module% procedure% %n", name); | |
9303 | if (m != MATCH_YES) | |
9304 | return m; | |
9305 | ||
9306 | if (!gfc_notify_std (GFC_STD_F2008, "MODULE PROCEDURE declaration " | |
9307 | "at %C")) | |
9308 | return MATCH_ERROR; | |
9309 | ||
9310 | if (get_proc_name (name, &sym, false)) | |
9311 | return MATCH_ERROR; | |
9312 | ||
9313 | /* Make sure that the result field is appropriately filled, even though | |
9314 | the result symbol will be replaced later on. */ | |
dee7f6d1 | 9315 | if (sym->tlink && sym->tlink->attr.function) |
4b8eb6ca | 9316 | { |
dee7f6d1 | 9317 | if (sym->tlink->result |
9318 | && sym->tlink->result != sym->tlink) | |
9319 | sym->result= sym->tlink->result; | |
4b8eb6ca | 9320 | else |
9321 | sym->result = sym; | |
9322 | } | |
9323 | ||
9324 | /* Set declared_at as it might point to, e.g., a PUBLIC statement, if | |
9325 | the symbol existed before. */ | |
9326 | sym->declared_at = gfc_current_locus; | |
9327 | ||
9328 | if (!sym->attr.module_procedure) | |
9329 | return MATCH_ERROR; | |
9330 | ||
9331 | /* Signal match_end to expect "end procedure". */ | |
9332 | sym->abr_modproc_decl = 1; | |
9333 | ||
9334 | /* Change from IFSRC_IFBODY coming from the interface declaration. */ | |
9335 | sym->attr.if_source = IFSRC_DECL; | |
9336 | ||
9337 | gfc_new_block = sym; | |
9338 | ||
9339 | /* Make a new formal arglist with the symbols in the procedure | |
9340 | namespace. */ | |
9341 | head = tail = NULL; | |
9342 | for (formal = sym->formal; formal && formal->sym; formal = formal->next) | |
9343 | { | |
9344 | if (formal == sym->formal) | |
9345 | head = tail = gfc_get_formal_arglist (); | |
9346 | else | |
9347 | { | |
9348 | tail->next = gfc_get_formal_arglist (); | |
9349 | tail = tail->next; | |
9350 | } | |
9351 | ||
9352 | if (gfc_copy_dummy_sym (&fsym, formal->sym, 0)) | |
9353 | goto cleanup; | |
9354 | ||
9355 | tail->sym = fsym; | |
9356 | gfc_set_sym_referenced (fsym); | |
9357 | } | |
9358 | ||
9359 | /* The dummy symbols get cleaned up, when the formal_namespace of the | |
9360 | interface declaration is cleared. This allows us to add the | |
9361 | explicit interface as is done for other type of procedure. */ | |
9362 | if (!gfc_add_explicit_interface (sym, IFSRC_DECL, head, | |
9363 | &gfc_current_locus)) | |
9364 | return MATCH_ERROR; | |
9365 | ||
9366 | if (gfc_match_eos () != MATCH_YES) | |
9367 | { | |
9368 | gfc_syntax_error (ST_MODULE_PROC); | |
9369 | return MATCH_ERROR; | |
9370 | } | |
9371 | ||
9372 | return MATCH_YES; | |
9373 | ||
9374 | cleanup: | |
9375 | gfc_free_formal_arglist (head); | |
9376 | return MATCH_ERROR; | |
9377 | } | |
9378 | ||
9379 | ||
4ee9c684 | 9380 | /* Match a module procedure statement. Note that we have to modify |
9381 | symbols in the parent's namespace because the current one was there | |
89d91d02 | 9382 | to receive symbols that are in an interface's formal argument list. */ |
4ee9c684 | 9383 | |
9384 | match | |
9385 | gfc_match_modproc (void) | |
9386 | { | |
9387 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9388 | gfc_symbol *sym; | |
9389 | match m; | |
d920fb76 | 9390 | locus old_locus; |
63d42079 | 9391 | gfc_namespace *module_ns; |
94ce9f74 | 9392 | gfc_interface *old_interface_head, *interface; |
4ee9c684 | 9393 | |
9394 | if (gfc_state_stack->state != COMP_INTERFACE | |
9395 | || gfc_state_stack->previous == NULL | |
5cf92482 | 9396 | || current_interface.type == INTERFACE_NAMELESS |
9397 | || current_interface.type == INTERFACE_ABSTRACT) | |
4ee9c684 | 9398 | { |
1a9745d2 | 9399 | gfc_error ("MODULE PROCEDURE at %C must be in a generic module " |
9400 | "interface"); | |
4ee9c684 | 9401 | return MATCH_ERROR; |
9402 | } | |
9403 | ||
63d42079 | 9404 | module_ns = gfc_current_ns->parent; |
9405 | for (; module_ns; module_ns = module_ns->parent) | |
15ca3865 | 9406 | if (module_ns->proc_name->attr.flavor == FL_MODULE |
9407 | || module_ns->proc_name->attr.flavor == FL_PROGRAM | |
9408 | || (module_ns->proc_name->attr.flavor == FL_PROCEDURE | |
9409 | && !module_ns->proc_name->attr.contained)) | |
63d42079 | 9410 | break; |
9411 | ||
9412 | if (module_ns == NULL) | |
9413 | return MATCH_ERROR; | |
9414 | ||
94ce9f74 | 9415 | /* Store the current state of the interface. We will need it if we |
9416 | end up with a syntax error and need to recover. */ | |
9417 | old_interface_head = gfc_current_interface_head (); | |
9418 | ||
d920fb76 | 9419 | /* Check if the F2008 optional double colon appears. */ |
9420 | gfc_gobble_whitespace (); | |
9421 | old_locus = gfc_current_locus; | |
9422 | if (gfc_match ("::") == MATCH_YES) | |
9423 | { | |
60e19868 | 9424 | if (!gfc_notify_std (GFC_STD_F2008, "double colon in " |
9425 | "MODULE PROCEDURE statement at %L", &old_locus)) | |
d920fb76 | 9426 | return MATCH_ERROR; |
9427 | } | |
9428 | else | |
9429 | gfc_current_locus = old_locus; | |
8db94b3b | 9430 | |
4ee9c684 | 9431 | for (;;) |
9432 | { | |
94ce9f74 | 9433 | bool last = false; |
d920fb76 | 9434 | old_locus = gfc_current_locus; |
94ce9f74 | 9435 | |
4ee9c684 | 9436 | m = gfc_match_name (name); |
9437 | if (m == MATCH_NO) | |
9438 | goto syntax; | |
9439 | if (m != MATCH_YES) | |
9440 | return MATCH_ERROR; | |
9441 | ||
94ce9f74 | 9442 | /* Check for syntax error before starting to add symbols to the |
9443 | current namespace. */ | |
9444 | if (gfc_match_eos () == MATCH_YES) | |
9445 | last = true; | |
d920fb76 | 9446 | |
94ce9f74 | 9447 | if (!last && gfc_match_char (',') != MATCH_YES) |
9448 | goto syntax; | |
9449 | ||
9450 | /* Now we're sure the syntax is valid, we process this item | |
9451 | further. */ | |
63d42079 | 9452 | if (gfc_get_symbol (name, module_ns, &sym)) |
4ee9c684 | 9453 | return MATCH_ERROR; |
9454 | ||
15ca3865 | 9455 | if (sym->attr.intrinsic) |
9456 | { | |
9457 | gfc_error ("Intrinsic procedure at %L cannot be a MODULE " | |
9458 | "PROCEDURE", &old_locus); | |
9459 | return MATCH_ERROR; | |
9460 | } | |
9461 | ||
4ee9c684 | 9462 | if (sym->attr.proc != PROC_MODULE |
60e19868 | 9463 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
4ee9c684 | 9464 | return MATCH_ERROR; |
9465 | ||
60e19868 | 9466 | if (!gfc_add_interface (sym)) |
4ee9c684 | 9467 | return MATCH_ERROR; |
9468 | ||
3186f695 | 9469 | sym->attr.mod_proc = 1; |
15ca3865 | 9470 | sym->declared_at = old_locus; |
3186f695 | 9471 | |
94ce9f74 | 9472 | if (last) |
4ee9c684 | 9473 | break; |
4ee9c684 | 9474 | } |
9475 | ||
9476 | return MATCH_YES; | |
9477 | ||
9478 | syntax: | |
94ce9f74 | 9479 | /* Restore the previous state of the interface. */ |
9480 | interface = gfc_current_interface_head (); | |
9481 | gfc_set_current_interface_head (old_interface_head); | |
9482 | ||
9483 | /* Free the new interfaces. */ | |
9484 | while (interface != old_interface_head) | |
9485 | { | |
9486 | gfc_interface *i = interface->next; | |
434f0922 | 9487 | free (interface); |
94ce9f74 | 9488 | interface = i; |
9489 | } | |
9490 | ||
9491 | /* And issue a syntax error. */ | |
4ee9c684 | 9492 | gfc_syntax_error (ST_MODULE_PROC); |
9493 | return MATCH_ERROR; | |
9494 | } | |
9495 | ||
9496 | ||
ea94d76d | 9497 | /* Check a derived type that is being extended. */ |
7a99bc9b | 9498 | |
ea94d76d | 9499 | static gfc_symbol* |
9500 | check_extended_derived_type (char *name) | |
9501 | { | |
9502 | gfc_symbol *extended; | |
9503 | ||
9504 | if (gfc_find_symbol (name, gfc_current_ns, 1, &extended)) | |
9505 | { | |
9506 | gfc_error ("Ambiguous symbol in TYPE definition at %C"); | |
9507 | return NULL; | |
9508 | } | |
9509 | ||
7a99bc9b | 9510 | extended = gfc_find_dt_in_generic (extended); |
9511 | ||
9512 | /* F08:C428. */ | |
ea94d76d | 9513 | if (!extended) |
9514 | { | |
716da296 | 9515 | gfc_error ("Symbol %qs at %C has not been previously defined", name); |
ea94d76d | 9516 | return NULL; |
9517 | } | |
9518 | ||
9519 | if (extended->attr.flavor != FL_DERIVED) | |
9520 | { | |
716da296 | 9521 | gfc_error ("%qs in EXTENDS expression at %C is not a " |
ea94d76d | 9522 | "derived type", name); |
9523 | return NULL; | |
9524 | } | |
9525 | ||
9526 | if (extended->attr.is_bind_c) | |
9527 | { | |
716da296 | 9528 | gfc_error ("%qs cannot be extended at %C because it " |
ea94d76d | 9529 | "is BIND(C)", extended->name); |
9530 | return NULL; | |
9531 | } | |
9532 | ||
9533 | if (extended->attr.sequence) | |
9534 | { | |
716da296 | 9535 | gfc_error ("%qs cannot be extended at %C because it " |
ea94d76d | 9536 | "is a SEQUENCE type", extended->name); |
9537 | return NULL; | |
9538 | } | |
9539 | ||
9540 | return extended; | |
9541 | } | |
9542 | ||
9543 | ||
c5d33754 | 9544 | /* Match the optional attribute specifiers for a type declaration. |
9545 | Return MATCH_ERROR if an error is encountered in one of the handled | |
9546 | attributes (public, private, bind(c)), MATCH_NO if what's found is | |
9547 | not a handled attribute, and MATCH_YES otherwise. TODO: More error | |
9548 | checking on attribute conflicts needs to be done. */ | |
4ee9c684 | 9549 | |
9550 | match | |
ea94d76d | 9551 | gfc_get_type_attr_spec (symbol_attribute *attr, char *name) |
4ee9c684 | 9552 | { |
c5d33754 | 9553 | /* See if the derived type is marked as private. */ |
4ee9c684 | 9554 | if (gfc_match (" , private") == MATCH_YES) |
9555 | { | |
e14bee04 | 9556 | if (gfc_current_state () != COMP_MODULE) |
4ee9c684 | 9557 | { |
e14bee04 | 9558 | gfc_error ("Derived type at %C can only be PRIVATE in the " |
9559 | "specification part of a module"); | |
4ee9c684 | 9560 | return MATCH_ERROR; |
9561 | } | |
9562 | ||
60e19868 | 9563 | if (!gfc_add_access (attr, ACCESS_PRIVATE, NULL, NULL)) |
4ee9c684 | 9564 | return MATCH_ERROR; |
4ee9c684 | 9565 | } |
c5d33754 | 9566 | else if (gfc_match (" , public") == MATCH_YES) |
4ee9c684 | 9567 | { |
e14bee04 | 9568 | if (gfc_current_state () != COMP_MODULE) |
4ee9c684 | 9569 | { |
e14bee04 | 9570 | gfc_error ("Derived type at %C can only be PUBLIC in the " |
9571 | "specification part of a module"); | |
4ee9c684 | 9572 | return MATCH_ERROR; |
9573 | } | |
9574 | ||
60e19868 | 9575 | if (!gfc_add_access (attr, ACCESS_PUBLIC, NULL, NULL)) |
4ee9c684 | 9576 | return MATCH_ERROR; |
4ee9c684 | 9577 | } |
ac5f2650 | 9578 | else if (gfc_match (" , bind ( c )") == MATCH_YES) |
c5d33754 | 9579 | { |
9580 | /* If the type is defined to be bind(c) it then needs to make | |
9581 | sure that all fields are interoperable. This will | |
9582 | need to be a semantic check on the finished derived type. | |
9583 | See 15.2.3 (lines 9-12) of F2003 draft. */ | |
60e19868 | 9584 | if (!gfc_add_is_bind_c (attr, NULL, &gfc_current_locus, 0)) |
c5d33754 | 9585 | return MATCH_ERROR; |
9586 | ||
9587 | /* TODO: attr conflicts need to be checked, probably in symbol.c. */ | |
9588 | } | |
ac5f2650 | 9589 | else if (gfc_match (" , abstract") == MATCH_YES) |
9590 | { | |
60e19868 | 9591 | if (!gfc_notify_std (GFC_STD_F2003, "ABSTRACT type at %C")) |
ac5f2650 | 9592 | return MATCH_ERROR; |
9593 | ||
60e19868 | 9594 | if (!gfc_add_abstract (attr, &gfc_current_locus)) |
ac5f2650 | 9595 | return MATCH_ERROR; |
9596 | } | |
60e19868 | 9597 | else if (name && gfc_match (" , extends ( %n )", name) == MATCH_YES) |
ea94d76d | 9598 | { |
60e19868 | 9599 | if (!gfc_add_extension (attr, &gfc_current_locus)) |
ea94d76d | 9600 | return MATCH_ERROR; |
9601 | } | |
c5d33754 | 9602 | else |
9603 | return MATCH_NO; | |
9604 | ||
9605 | /* If we get here, something matched. */ | |
9606 | return MATCH_YES; | |
9607 | } | |
9608 | ||
9609 | ||
d7cd448a | 9610 | /* Common function for type declaration blocks similar to derived types, such |
9611 | as STRUCTURES and MAPs. Unlike derived types, a structure type | |
9612 | does NOT have a generic symbol matching the name given by the user. | |
9613 | STRUCTUREs can share names with variables and PARAMETERs so we must allow | |
9614 | for the creation of an independent symbol. | |
7d7125df | 9615 | Other parameters are a message to prefix errors with, the name of the new |
d7cd448a | 9616 | type to be created, and the flavor to add to the resulting symbol. */ |
9617 | ||
9618 | static bool | |
9619 | get_struct_decl (const char *name, sym_flavor fl, locus *decl, | |
9620 | gfc_symbol **result) | |
9621 | { | |
9622 | gfc_symbol *sym; | |
9623 | locus where; | |
9624 | ||
9625 | gcc_assert (name[0] == (char) TOUPPER (name[0])); | |
9626 | ||
9627 | if (decl) | |
9628 | where = *decl; | |
9629 | else | |
9630 | where = gfc_current_locus; | |
9631 | ||
9632 | if (gfc_get_symbol (name, NULL, &sym)) | |
9633 | return false; | |
9634 | ||
9635 | if (!sym) | |
9636 | { | |
9637 | gfc_internal_error ("Failed to create structure type '%s' at %C", name); | |
9638 | return false; | |
9639 | } | |
9640 | ||
9641 | if (sym->components != NULL || sym->attr.zero_comp) | |
9642 | { | |
1b7008c4 | 9643 | gfc_error ("Type definition of %qs at %C was already defined at %L", |
d7cd448a | 9644 | sym->name, &sym->declared_at); |
9645 | return false; | |
9646 | } | |
9647 | ||
9648 | sym->declared_at = where; | |
9649 | ||
9650 | if (sym->attr.flavor != fl | |
9651 | && !gfc_add_flavor (&sym->attr, fl, sym->name, NULL)) | |
9652 | return false; | |
9653 | ||
9654 | if (!sym->hash_value) | |
9655 | /* Set the hash for the compound name for this type. */ | |
9656 | sym->hash_value = gfc_hash_value (sym); | |
9657 | ||
9658 | /* Normally the type is expected to have been completely parsed by the time | |
9659 | a field declaration with this type is seen. For unions, maps, and nested | |
9660 | structure declarations, we need to indicate that it is okay that we | |
9661 | haven't seen any components yet. This will be updated after the structure | |
9662 | is fully parsed. */ | |
9663 | sym->attr.zero_comp = 0; | |
9664 | ||
9665 | /* Structures always act like derived-types with the SEQUENCE attribute */ | |
9666 | gfc_add_sequence (&sym->attr, sym->name, NULL); | |
9667 | ||
9668 | if (result) *result = sym; | |
9669 | ||
9670 | return true; | |
9671 | } | |
9672 | ||
9673 | ||
9674 | /* Match the opening of a MAP block. Like a struct within a union in C; | |
9675 | behaves identical to STRUCTURE blocks. */ | |
9676 | ||
9677 | match | |
9678 | gfc_match_map (void) | |
9679 | { | |
ac1739da | 9680 | /* Counter used to give unique internal names to map structures. */ |
9681 | static unsigned int gfc_map_id = 0; | |
9682 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9683 | gfc_symbol *sym; | |
9684 | locus old_loc; | |
d7cd448a | 9685 | |
ac1739da | 9686 | old_loc = gfc_current_locus; |
d7cd448a | 9687 | |
ac1739da | 9688 | if (gfc_match_eos () != MATCH_YES) |
9689 | { | |
9690 | gfc_error ("Junk after MAP statement at %C"); | |
9691 | gfc_current_locus = old_loc; | |
9692 | return MATCH_ERROR; | |
9693 | } | |
d7cd448a | 9694 | |
ac1739da | 9695 | /* Map blocks are anonymous so we make up unique names for the symbol table |
9696 | which are invalid Fortran identifiers. */ | |
9697 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "MM$%u", gfc_map_id++); | |
d7cd448a | 9698 | |
ac1739da | 9699 | if (!get_struct_decl (name, FL_STRUCT, &old_loc, &sym)) |
9700 | return MATCH_ERROR; | |
d7cd448a | 9701 | |
ac1739da | 9702 | gfc_new_block = sym; |
d7cd448a | 9703 | |
ac1739da | 9704 | return MATCH_YES; |
d7cd448a | 9705 | } |
9706 | ||
9707 | ||
9708 | /* Match the opening of a UNION block. */ | |
9709 | ||
9710 | match | |
9711 | gfc_match_union (void) | |
9712 | { | |
ac1739da | 9713 | /* Counter used to give unique internal names to union types. */ |
9714 | static unsigned int gfc_union_id = 0; | |
9715 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9716 | gfc_symbol *sym; | |
9717 | locus old_loc; | |
d7cd448a | 9718 | |
ac1739da | 9719 | old_loc = gfc_current_locus; |
d7cd448a | 9720 | |
ac1739da | 9721 | if (gfc_match_eos () != MATCH_YES) |
9722 | { | |
9723 | gfc_error ("Junk after UNION statement at %C"); | |
9724 | gfc_current_locus = old_loc; | |
9725 | return MATCH_ERROR; | |
9726 | } | |
d7cd448a | 9727 | |
ac1739da | 9728 | /* Unions are anonymous so we make up unique names for the symbol table |
9729 | which are invalid Fortran identifiers. */ | |
9730 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "UU$%u", gfc_union_id++); | |
d7cd448a | 9731 | |
ac1739da | 9732 | if (!get_struct_decl (name, FL_UNION, &old_loc, &sym)) |
9733 | return MATCH_ERROR; | |
d7cd448a | 9734 | |
ac1739da | 9735 | gfc_new_block = sym; |
d7cd448a | 9736 | |
ac1739da | 9737 | return MATCH_YES; |
d7cd448a | 9738 | } |
9739 | ||
9740 | ||
9741 | /* Match the beginning of a STRUCTURE declaration. This is similar to | |
9742 | matching the beginning of a derived type declaration with a few | |
9743 | twists. The resulting type symbol has no access control or other | |
9744 | interesting attributes. */ | |
9745 | ||
9746 | match | |
9747 | gfc_match_structure_decl (void) | |
9748 | { | |
ac1739da | 9749 | /* Counter used to give unique internal names to anonymous structures. */ |
9750 | static unsigned int gfc_structure_id = 0; | |
9751 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9752 | gfc_symbol *sym; | |
9753 | match m; | |
9754 | locus where; | |
d7cd448a | 9755 | |
ac1739da | 9756 | if (!flag_dec_structure) |
9757 | { | |
841da9cf | 9758 | gfc_error ("%s at %C is a DEC extension, enable with " |
9759 | "%<-fdec-structure%>", | |
9760 | "STRUCTURE"); | |
ac1739da | 9761 | return MATCH_ERROR; |
9762 | } | |
d7cd448a | 9763 | |
ac1739da | 9764 | name[0] = '\0'; |
d7cd448a | 9765 | |
ac1739da | 9766 | m = gfc_match (" /%n/", name); |
9767 | if (m != MATCH_YES) | |
9768 | { | |
9769 | /* Non-nested structure declarations require a structure name. */ | |
9770 | if (!gfc_comp_struct (gfc_current_state ())) | |
9771 | { | |
9772 | gfc_error ("Structure name expected in non-nested structure " | |
9773 | "declaration at %C"); | |
9774 | return MATCH_ERROR; | |
9775 | } | |
9776 | /* This is an anonymous structure; make up a unique name for it | |
9777 | (upper-case letters never make it to symbol names from the source). | |
9778 | The important thing is initializing the type variable | |
9779 | and setting gfc_new_symbol, which is immediately used by | |
9780 | parse_structure () and variable_decl () to add components of | |
9781 | this type. */ | |
9782 | snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "SS$%u", gfc_structure_id++); | |
9783 | } | |
d7cd448a | 9784 | |
ac1739da | 9785 | where = gfc_current_locus; |
9786 | /* No field list allowed after non-nested structure declaration. */ | |
9787 | if (!gfc_comp_struct (gfc_current_state ()) | |
9788 | && gfc_match_eos () != MATCH_YES) | |
9789 | { | |
9790 | gfc_error ("Junk after non-nested STRUCTURE statement at %C"); | |
9791 | return MATCH_ERROR; | |
9792 | } | |
d7cd448a | 9793 | |
ac1739da | 9794 | /* Make sure the name is not the name of an intrinsic type. */ |
9795 | if (gfc_is_intrinsic_typename (name)) | |
9796 | { | |
1b7008c4 | 9797 | gfc_error ("Structure name %qs at %C cannot be the same as an" |
ac1739da | 9798 | " intrinsic type", name); |
9799 | return MATCH_ERROR; | |
9800 | } | |
d7cd448a | 9801 | |
ac1739da | 9802 | /* Store the actual type symbol for the structure with an upper-case first |
9803 | letter (an invalid Fortran identifier). */ | |
d7cd448a | 9804 | |
dc326dc0 | 9805 | if (!get_struct_decl (gfc_dt_upper_string (name), FL_STRUCT, &where, &sym)) |
ac1739da | 9806 | return MATCH_ERROR; |
d7cd448a | 9807 | |
ac1739da | 9808 | gfc_new_block = sym; |
9809 | return MATCH_YES; | |
d7cd448a | 9810 | } |
9811 | ||
006943e8 | 9812 | |
9813 | /* This function does some work to determine which matcher should be used to | |
80ed743c | 9814 | * match a statement beginning with "TYPE". This is used to disambiguate TYPE |
006943e8 | 9815 | * as an alias for PRINT from derived type declarations, TYPE IS statements, |
80ed743c | 9816 | * and [parameterized] derived type declarations. */ |
006943e8 | 9817 | |
9818 | match | |
9819 | gfc_match_type (gfc_statement *st) | |
9820 | { | |
9821 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
9822 | match m; | |
9823 | locus old_loc; | |
9824 | ||
9825 | /* Requires -fdec. */ | |
9826 | if (!flag_dec) | |
9827 | return MATCH_NO; | |
9828 | ||
9829 | m = gfc_match ("type"); | |
9830 | if (m != MATCH_YES) | |
9831 | return m; | |
9832 | /* If we already have an error in the buffer, it is probably from failing to | |
9833 | * match a derived type data declaration. Let it happen. */ | |
9834 | else if (gfc_error_flag_test ()) | |
9835 | return MATCH_NO; | |
9836 | ||
9837 | old_loc = gfc_current_locus; | |
9838 | *st = ST_NONE; | |
9839 | ||
9840 | /* If we see an attribute list before anything else it's definitely a derived | |
9841 | * type declaration. */ | |
9842 | if (gfc_match (" ,") == MATCH_YES || gfc_match (" ::") == MATCH_YES) | |
80ed743c | 9843 | goto derived; |
006943e8 | 9844 | |
9845 | /* By now "TYPE" has already been matched. If we do not see a name, this may | |
9846 | * be something like "TYPE *" or "TYPE <fmt>". */ | |
9847 | m = gfc_match_name (name); | |
9848 | if (m != MATCH_YES) | |
9849 | { | |
9850 | /* Let print match if it can, otherwise throw an error from | |
9851 | * gfc_match_derived_decl. */ | |
9852 | gfc_current_locus = old_loc; | |
9853 | if (gfc_match_print () == MATCH_YES) | |
9854 | { | |
9855 | *st = ST_WRITE; | |
9856 | return MATCH_YES; | |
9857 | } | |
80ed743c | 9858 | goto derived; |
006943e8 | 9859 | } |
9860 | ||
80ed743c | 9861 | /* Check for EOS. */ |
9862 | if (gfc_match_eos () == MATCH_YES) | |
006943e8 | 9863 | { |
9864 | /* By now we have "TYPE <name> <EOS>". Check first if the name is an | |
9865 | * intrinsic typename - if so let gfc_match_derived_decl dump an error. | |
9866 | * Otherwise if gfc_match_derived_decl fails it's probably an existing | |
9867 | * symbol which can be printed. */ | |
9868 | gfc_current_locus = old_loc; | |
9869 | m = gfc_match_derived_decl (); | |
9870 | if (gfc_is_intrinsic_typename (name) || m == MATCH_YES) | |
9871 | { | |
9872 | *st = ST_DERIVED_DECL; | |
9873 | return m; | |
9874 | } | |
006943e8 | 9875 | } |
80ed743c | 9876 | else |
9877 | { | |
9878 | /* Here we have "TYPE <name>". Check for <TYPE IS (> or a PDT declaration | |
9879 | like <type name(parameter)>. */ | |
9880 | gfc_gobble_whitespace (); | |
9881 | bool paren = gfc_peek_ascii_char () == '('; | |
9882 | if (paren) | |
9883 | { | |
9884 | if (strcmp ("is", name) == 0) | |
9885 | goto typeis; | |
9886 | else | |
9887 | goto derived; | |
9888 | } | |
9889 | } | |
9890 | ||
9891 | /* Treat TYPE... like PRINT... */ | |
9892 | gfc_current_locus = old_loc; | |
9893 | *st = ST_WRITE; | |
9894 | return gfc_match_print (); | |
006943e8 | 9895 | |
80ed743c | 9896 | derived: |
9897 | gfc_current_locus = old_loc; | |
9898 | *st = ST_DERIVED_DECL; | |
9899 | return gfc_match_derived_decl (); | |
9900 | ||
9901 | typeis: | |
9902 | gfc_current_locus = old_loc; | |
9903 | *st = ST_TYPE_IS; | |
9904 | return gfc_match_type_is (); | |
006943e8 | 9905 | } |
9906 | ||
9907 | ||
c5d33754 | 9908 | /* Match the beginning of a derived type declaration. If a type name |
9909 | was the result of a function, then it is possible to have a symbol | |
9910 | already to be known as a derived type yet have no components. */ | |
9911 | ||
9912 | match | |
9913 | gfc_match_derived_decl (void) | |
9914 | { | |
9915 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
ea94d76d | 9916 | char parent[GFC_MAX_SYMBOL_LEN + 1]; |
c5d33754 | 9917 | symbol_attribute attr; |
c2958b6b | 9918 | gfc_symbol *sym, *gensym; |
ea94d76d | 9919 | gfc_symbol *extended; |
c5d33754 | 9920 | match m; |
9921 | match is_type_attr_spec = MATCH_NO; | |
33e86520 | 9922 | bool seen_attr = false; |
c2958b6b | 9923 | gfc_interface *intr = NULL, *head; |
9d958d5b | 9924 | bool parameterized_type = false; |
9925 | bool seen_colons = false; | |
c5d33754 | 9926 | |
d7cd448a | 9927 | if (gfc_comp_struct (gfc_current_state ())) |
c5d33754 | 9928 | return MATCH_NO; |
9929 | ||
ea94d76d | 9930 | name[0] = '\0'; |
9931 | parent[0] = '\0'; | |
c5d33754 | 9932 | gfc_clear_attr (&attr); |
ea94d76d | 9933 | extended = NULL; |
c5d33754 | 9934 | |
9935 | do | |
9936 | { | |
ea94d76d | 9937 | is_type_attr_spec = gfc_get_type_attr_spec (&attr, parent); |
c5d33754 | 9938 | if (is_type_attr_spec == MATCH_ERROR) |
9939 | return MATCH_ERROR; | |
33e86520 | 9940 | if (is_type_attr_spec == MATCH_YES) |
9941 | seen_attr = true; | |
c5d33754 | 9942 | } while (is_type_attr_spec == MATCH_YES); |
4ee9c684 | 9943 | |
e485ad6b | 9944 | /* Deal with derived type extensions. The extension attribute has |
9945 | been added to 'attr' but now the parent type must be found and | |
9946 | checked. */ | |
ea94d76d | 9947 | if (parent[0]) |
9948 | extended = check_extended_derived_type (parent); | |
9949 | ||
9950 | if (parent[0] && !extended) | |
9951 | return MATCH_ERROR; | |
9952 | ||
9d958d5b | 9953 | m = gfc_match (" ::"); |
9954 | if (m == MATCH_YES) | |
9955 | { | |
9956 | seen_colons = true; | |
9957 | } | |
9958 | else if (seen_attr) | |
4ee9c684 | 9959 | { |
9960 | gfc_error ("Expected :: in TYPE definition at %C"); | |
9961 | return MATCH_ERROR; | |
9962 | } | |
9963 | ||
9d958d5b | 9964 | m = gfc_match (" %n ", name); |
4ee9c684 | 9965 | if (m != MATCH_YES) |
9966 | return m; | |
9967 | ||
9d958d5b | 9968 | /* Make sure that we don't identify TYPE IS (...) as a parameterized |
9969 | derived type named 'is'. | |
9970 | TODO Expand the check, when 'name' = "is" by matching " (tname) " | |
9971 | and checking if this is a(n intrinsic) typename. his picks up | |
9972 | misplaced TYPE IS statements such as in select_type_1.f03. */ | |
9973 | if (gfc_peek_ascii_char () == '(') | |
9974 | { | |
9975 | if (gfc_current_state () == COMP_SELECT_TYPE | |
9976 | || (!seen_colons && !strcmp (name, "is"))) | |
9977 | return MATCH_NO; | |
9978 | parameterized_type = true; | |
9979 | } | |
9980 | ||
9981 | m = gfc_match_eos (); | |
9982 | if (m != MATCH_YES && !parameterized_type) | |
9983 | return m; | |
9984 | ||
a3055431 | 9985 | /* Make sure the name is not the name of an intrinsic type. */ |
9986 | if (gfc_is_intrinsic_typename (name)) | |
4ee9c684 | 9987 | { |
716da296 | 9988 | gfc_error ("Type name %qs at %C cannot be the same as an intrinsic " |
1a9745d2 | 9989 | "type", name); |
4ee9c684 | 9990 | return MATCH_ERROR; |
9991 | } | |
9992 | ||
c2958b6b | 9993 | if (gfc_get_symbol (name, NULL, &gensym)) |
4ee9c684 | 9994 | return MATCH_ERROR; |
9995 | ||
c2958b6b | 9996 | if (!gensym->attr.generic && gensym->ts.type != BT_UNKNOWN) |
4ee9c684 | 9997 | { |
7dea3ef8 | 9998 | if (gensym->ts.u.derived) |
9999 | gfc_error ("Derived type name %qs at %C already has a basic type " | |
10000 | "of %s", gensym->name, gfc_typename (&gensym->ts)); | |
10001 | else | |
10002 | gfc_error ("Derived type name %qs at %C already has a basic type", | |
10003 | gensym->name); | |
c2958b6b | 10004 | return MATCH_ERROR; |
10005 | } | |
10006 | ||
10007 | if (!gensym->attr.generic | |
60e19868 | 10008 | && !gfc_add_generic (&gensym->attr, gensym->name, NULL)) |
c2958b6b | 10009 | return MATCH_ERROR; |
10010 | ||
10011 | if (!gensym->attr.function | |
60e19868 | 10012 | && !gfc_add_function (&gensym->attr, gensym->name, NULL)) |
c2958b6b | 10013 | return MATCH_ERROR; |
10014 | ||
10015 | sym = gfc_find_dt_in_generic (gensym); | |
10016 | ||
10017 | if (sym && (sym->components != NULL || sym->attr.zero_comp)) | |
10018 | { | |
716da296 | 10019 | gfc_error ("Derived type definition of %qs at %C has already been " |
c2958b6b | 10020 | "defined", sym->name); |
4ee9c684 | 10021 | return MATCH_ERROR; |
10022 | } | |
10023 | ||
c2958b6b | 10024 | if (!sym) |
10025 | { | |
10026 | /* Use upper case to save the actual derived-type symbol. */ | |
d7cd448a | 10027 | gfc_get_symbol (gfc_dt_upper_string (gensym->name), NULL, &sym); |
dc326dc0 | 10028 | sym->name = gfc_get_string ("%s", gensym->name); |
c2958b6b | 10029 | head = gensym->generic; |
10030 | intr = gfc_get_interface (); | |
10031 | intr->sym = sym; | |
10032 | intr->where = gfc_current_locus; | |
10033 | intr->sym->declared_at = gfc_current_locus; | |
10034 | intr->next = head; | |
10035 | gensym->generic = intr; | |
10036 | gensym->attr.if_source = IFSRC_DECL; | |
10037 | } | |
10038 | ||
4ee9c684 | 10039 | /* The symbol may already have the derived attribute without the |
10040 | components. The ways this can happen is via a function | |
10041 | definition, an INTRINSIC statement or a subtype in another | |
10042 | derived type that is a pointer. The first part of the AND clause | |
69b1505f | 10043 | is true if the symbol is not the return value of a function. */ |
4ee9c684 | 10044 | if (sym->attr.flavor != FL_DERIVED |
60e19868 | 10045 | && !gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL)) |
4ee9c684 | 10046 | return MATCH_ERROR; |
10047 | ||
4ee9c684 | 10048 | if (attr.access != ACCESS_UNKNOWN |
60e19868 | 10049 | && !gfc_add_access (&sym->attr, attr.access, sym->name, NULL)) |
4ee9c684 | 10050 | return MATCH_ERROR; |
c2958b6b | 10051 | else if (sym->attr.access == ACCESS_UNKNOWN |
10052 | && gensym->attr.access != ACCESS_UNKNOWN | |
76e207a9 | 10053 | && !gfc_add_access (&sym->attr, gensym->attr.access, |
60e19868 | 10054 | sym->name, NULL)) |
c2958b6b | 10055 | return MATCH_ERROR; |
10056 | ||
10057 | if (sym->attr.access != ACCESS_UNKNOWN | |
10058 | && gensym->attr.access == ACCESS_UNKNOWN) | |
10059 | gensym->attr.access = sym->attr.access; | |
4ee9c684 | 10060 | |
c5d33754 | 10061 | /* See if the derived type was labeled as bind(c). */ |
10062 | if (attr.is_bind_c != 0) | |
10063 | sym->attr.is_bind_c = attr.is_bind_c; | |
10064 | ||
223f0f57 | 10065 | /* Construct the f2k_derived namespace if it is not yet there. */ |
10066 | if (!sym->f2k_derived) | |
10067 | sym->f2k_derived = gfc_get_namespace (NULL, 0); | |
8db94b3b | 10068 | |
9d958d5b | 10069 | if (parameterized_type) |
10070 | { | |
f0efd2e8 | 10071 | /* Ignore error or mismatches by going to the end of the statement |
10072 | in order to avoid the component declarations causing problems. */ | |
10073 | m = gfc_match_formal_arglist (sym, 0, 0, true); | |
10074 | if (m != MATCH_YES) | |
10075 | gfc_error_recovery (); | |
9d958d5b | 10076 | m = gfc_match_eos (); |
10077 | if (m != MATCH_YES) | |
8df28d5e | 10078 | { |
10079 | gfc_error_recovery (); | |
10080 | gfc_error_now ("Garbage after PARAMETERIZED TYPE declaration at %C"); | |
10081 | } | |
9d958d5b | 10082 | sym->attr.pdt_template = 1; |
10083 | } | |
10084 | ||
ea94d76d | 10085 | if (extended && !sym->components) |
10086 | { | |
10087 | gfc_component *p; | |
9d958d5b | 10088 | gfc_formal_arglist *f, *g, *h; |
ea94d76d | 10089 | |
10090 | /* Add the extended derived type as the first component. */ | |
10091 | gfc_add_component (sym, parent, &p); | |
ea94d76d | 10092 | extended->refs++; |
10093 | gfc_set_sym_referenced (extended); | |
10094 | ||
10095 | p->ts.type = BT_DERIVED; | |
eeebe20b | 10096 | p->ts.u.derived = extended; |
ea94d76d | 10097 | p->initializer = gfc_default_initializer (&p->ts); |
8db94b3b | 10098 | |
bdfbc762 | 10099 | /* Set extension level. */ |
10100 | if (extended->attr.extension == 255) | |
10101 | { | |
10102 | /* Since the extension field is 8 bit wide, we can only have | |
10103 | up to 255 extension levels. */ | |
716da296 | 10104 | gfc_error ("Maximum extension level reached with type %qs at %L", |
bdfbc762 | 10105 | extended->name, &extended->declared_at); |
10106 | return MATCH_ERROR; | |
10107 | } | |
10108 | sym->attr.extension = extended->attr.extension + 1; | |
ea94d76d | 10109 | |
10110 | /* Provide the links between the extended type and its extension. */ | |
10111 | if (!extended->f2k_derived) | |
10112 | extended->f2k_derived = gfc_get_namespace (NULL, 0); | |
9d958d5b | 10113 | |
10114 | /* Copy the extended type-param-name-list from the extended type, | |
10115 | append those of the extension and add the whole lot to the | |
10116 | extension. */ | |
10117 | if (extended->attr.pdt_template) | |
10118 | { | |
10119 | g = h = NULL; | |
10120 | sym->attr.pdt_template = 1; | |
10121 | for (f = extended->formal; f; f = f->next) | |
10122 | { | |
10123 | if (f == extended->formal) | |
10124 | { | |
10125 | g = gfc_get_formal_arglist (); | |
10126 | h = g; | |
10127 | } | |
10128 | else | |
10129 | { | |
10130 | g->next = gfc_get_formal_arglist (); | |
10131 | g = g->next; | |
10132 | } | |
10133 | g->sym = f->sym; | |
10134 | } | |
10135 | g->next = sym->formal; | |
10136 | sym->formal = h; | |
10137 | } | |
ea94d76d | 10138 | } |
10139 | ||
bdfbc762 | 10140 | if (!sym->hash_value) |
10141 | /* Set the hash for the compound name for this type. */ | |
a656e7c2 | 10142 | sym->hash_value = gfc_hash_value (sym); |
1de1b1a9 | 10143 | |
ac5f2650 | 10144 | /* Take over the ABSTRACT attribute. */ |
10145 | sym->attr.abstract = attr.abstract; | |
10146 | ||
4ee9c684 | 10147 | gfc_new_block = sym; |
10148 | ||
10149 | return MATCH_YES; | |
10150 | } | |
b549d2a5 | 10151 | |
10152 | ||
8db94b3b | 10153 | /* Cray Pointees can be declared as: |
452695a8 | 10154 | pointer (ipt, a (n,m,...,*)) */ |
b549d2a5 | 10155 | |
8458f4ca | 10156 | match |
b549d2a5 | 10157 | gfc_mod_pointee_as (gfc_array_spec *as) |
10158 | { | |
10159 | as->cray_pointee = true; /* This will be useful to know later. */ | |
10160 | if (as->type == AS_ASSUMED_SIZE) | |
452695a8 | 10161 | as->cp_was_assumed = true; |
b549d2a5 | 10162 | else if (as->type == AS_ASSUMED_SHAPE) |
10163 | { | |
10164 | gfc_error ("Cray Pointee at %C cannot be assumed shape array"); | |
10165 | return MATCH_ERROR; | |
10166 | } | |
10167 | return MATCH_YES; | |
10168 | } | |
3b6a4b41 | 10169 | |
10170 | ||
8db94b3b | 10171 | /* Match the enum definition statement, here we are trying to match |
10172 | the first line of enum definition statement. | |
3b6a4b41 | 10173 | Returns MATCH_YES if match is found. */ |
10174 | ||
10175 | match | |
10176 | gfc_match_enum (void) | |
10177 | { | |
10178 | match m; | |
8db94b3b | 10179 | |
3b6a4b41 | 10180 | m = gfc_match_eos (); |
10181 | if (m != MATCH_YES) | |
10182 | return m; | |
10183 | ||
60e19868 | 10184 | if (!gfc_notify_std (GFC_STD_F2003, "ENUM and ENUMERATOR at %C")) |
3b6a4b41 | 10185 | return MATCH_ERROR; |
10186 | ||
10187 | return MATCH_YES; | |
10188 | } | |
10189 | ||
10190 | ||
fe1328da | 10191 | /* Returns an initializer whose value is one higher than the value of the |
10192 | LAST_INITIALIZER argument. If the argument is NULL, the | |
10193 | initializers value will be set to zero. The initializer's kind | |
10194 | will be set to gfc_c_int_kind. | |
10195 | ||
10196 | If -fshort-enums is given, the appropriate kind will be selected | |
10197 | later after all enumerators have been parsed. A warning is issued | |
10198 | here if an initializer exceeds gfc_c_int_kind. */ | |
10199 | ||
10200 | static gfc_expr * | |
10201 | enum_initializer (gfc_expr *last_initializer, locus where) | |
10202 | { | |
10203 | gfc_expr *result; | |
126387b5 | 10204 | result = gfc_get_constant_expr (BT_INTEGER, gfc_c_int_kind, &where); |
fe1328da | 10205 | |
10206 | mpz_init (result->value.integer); | |
10207 | ||
10208 | if (last_initializer != NULL) | |
10209 | { | |
10210 | mpz_add_ui (result->value.integer, last_initializer->value.integer, 1); | |
10211 | result->where = last_initializer->where; | |
10212 | ||
10213 | if (gfc_check_integer_range (result->value.integer, | |
10214 | gfc_c_int_kind) != ARITH_OK) | |
10215 | { | |
10216 | gfc_error ("Enumerator exceeds the C integer type at %C"); | |
10217 | return NULL; | |
10218 | } | |
10219 | } | |
10220 | else | |
10221 | { | |
10222 | /* Control comes here, if it's the very first enumerator and no | |
10223 | initializer has been given. It will be initialized to zero. */ | |
10224 | mpz_set_si (result->value.integer, 0); | |
10225 | } | |
10226 | ||
10227 | return result; | |
10228 | } | |
10229 | ||
10230 | ||
60fbbf9e | 10231 | /* Match a variable name with an optional initializer. When this |
10232 | subroutine is called, a variable is expected to be parsed next. | |
10233 | Depending on what is happening at the moment, updates either the | |
10234 | symbol table or the current interface. */ | |
10235 | ||
10236 | static match | |
10237 | enumerator_decl (void) | |
10238 | { | |
10239 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10240 | gfc_expr *initializer; | |
10241 | gfc_array_spec *as = NULL; | |
10242 | gfc_symbol *sym; | |
10243 | locus var_locus; | |
10244 | match m; | |
60e19868 | 10245 | bool t; |
60fbbf9e | 10246 | locus old_locus; |
10247 | ||
10248 | initializer = NULL; | |
10249 | old_locus = gfc_current_locus; | |
10250 | ||
10251 | /* When we get here, we've just matched a list of attributes and | |
10252 | maybe a type and a double colon. The next thing we expect to see | |
10253 | is the name of the symbol. */ | |
10254 | m = gfc_match_name (name); | |
10255 | if (m != MATCH_YES) | |
10256 | goto cleanup; | |
10257 | ||
10258 | var_locus = gfc_current_locus; | |
10259 | ||
10260 | /* OK, we've successfully matched the declaration. Now put the | |
10261 | symbol in the current namespace. If we fail to create the symbol, | |
10262 | bail out. */ | |
60e19868 | 10263 | if (!build_sym (name, NULL, false, &as, &var_locus)) |
60fbbf9e | 10264 | { |
10265 | m = MATCH_ERROR; | |
10266 | goto cleanup; | |
10267 | } | |
10268 | ||
10269 | /* The double colon must be present in order to have initializers. | |
10270 | Otherwise the statement is ambiguous with an assignment statement. */ | |
10271 | if (colon_seen) | |
10272 | { | |
10273 | if (gfc_match_char ('=') == MATCH_YES) | |
10274 | { | |
10275 | m = gfc_match_init_expr (&initializer); | |
10276 | if (m == MATCH_NO) | |
10277 | { | |
10278 | gfc_error ("Expected an initialization expression at %C"); | |
10279 | m = MATCH_ERROR; | |
10280 | } | |
10281 | ||
10282 | if (m != MATCH_YES) | |
10283 | goto cleanup; | |
10284 | } | |
10285 | } | |
10286 | ||
10287 | /* If we do not have an initializer, the initialization value of the | |
10288 | previous enumerator (stored in last_initializer) is incremented | |
10289 | by 1 and is used to initialize the current enumerator. */ | |
10290 | if (initializer == NULL) | |
fe1328da | 10291 | initializer = enum_initializer (last_initializer, old_locus); |
e14bee04 | 10292 | |
60fbbf9e | 10293 | if (initializer == NULL || initializer->ts.type != BT_INTEGER) |
10294 | { | |
a8beb4f8 | 10295 | gfc_error ("ENUMERATOR %L not initialized with integer expression", |
10296 | &var_locus); | |
e14bee04 | 10297 | m = MATCH_ERROR; |
60fbbf9e | 10298 | goto cleanup; |
10299 | } | |
10300 | ||
10301 | /* Store this current initializer, for the next enumerator variable | |
10302 | to be parsed. add_init_expr_to_sym() zeros initializer, so we | |
10303 | use last_initializer below. */ | |
10304 | last_initializer = initializer; | |
10305 | t = add_init_expr_to_sym (name, &initializer, &var_locus); | |
10306 | ||
10307 | /* Maintain enumerator history. */ | |
10308 | gfc_find_symbol (name, NULL, 0, &sym); | |
10309 | create_enum_history (sym, last_initializer); | |
10310 | ||
60e19868 | 10311 | return (t) ? MATCH_YES : MATCH_ERROR; |
60fbbf9e | 10312 | |
10313 | cleanup: | |
10314 | /* Free stuff up and return. */ | |
10315 | gfc_free_expr (initializer); | |
10316 | ||
10317 | return m; | |
10318 | } | |
10319 | ||
10320 | ||
f6d0e37a | 10321 | /* Match the enumerator definition statement. */ |
3b6a4b41 | 10322 | |
10323 | match | |
10324 | gfc_match_enumerator_def (void) | |
10325 | { | |
10326 | match m; | |
60e19868 | 10327 | bool t; |
e14bee04 | 10328 | |
3b6a4b41 | 10329 | gfc_clear_ts (¤t_ts); |
e14bee04 | 10330 | |
3b6a4b41 | 10331 | m = gfc_match (" enumerator"); |
10332 | if (m != MATCH_YES) | |
10333 | return m; | |
60fbbf9e | 10334 | |
10335 | m = gfc_match (" :: "); | |
10336 | if (m == MATCH_ERROR) | |
10337 | return m; | |
10338 | ||
10339 | colon_seen = (m == MATCH_YES); | |
e14bee04 | 10340 | |
3b6a4b41 | 10341 | if (gfc_current_state () != COMP_ENUM) |
10342 | { | |
10343 | gfc_error ("ENUM definition statement expected before %C"); | |
10344 | gfc_free_enum_history (); | |
10345 | return MATCH_ERROR; | |
10346 | } | |
10347 | ||
10348 | (¤t_ts)->type = BT_INTEGER; | |
10349 | (¤t_ts)->kind = gfc_c_int_kind; | |
e14bee04 | 10350 | |
60fbbf9e | 10351 | gfc_clear_attr (¤t_attr); |
10352 | t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, NULL); | |
60e19868 | 10353 | if (!t) |
3b6a4b41 | 10354 | { |
60fbbf9e | 10355 | m = MATCH_ERROR; |
3b6a4b41 | 10356 | goto cleanup; |
10357 | } | |
10358 | ||
3b6a4b41 | 10359 | for (;;) |
10360 | { | |
60fbbf9e | 10361 | m = enumerator_decl (); |
3b6a4b41 | 10362 | if (m == MATCH_ERROR) |
a8beb4f8 | 10363 | { |
10364 | gfc_free_enum_history (); | |
10365 | goto cleanup; | |
10366 | } | |
3b6a4b41 | 10367 | if (m == MATCH_NO) |
10368 | break; | |
10369 | ||
10370 | if (gfc_match_eos () == MATCH_YES) | |
10371 | goto cleanup; | |
10372 | if (gfc_match_char (',') != MATCH_YES) | |
10373 | break; | |
10374 | } | |
10375 | ||
10376 | if (gfc_current_state () == COMP_ENUM) | |
10377 | { | |
10378 | gfc_free_enum_history (); | |
10379 | gfc_error ("Syntax error in ENUMERATOR definition at %C"); | |
10380 | m = MATCH_ERROR; | |
10381 | } | |
10382 | ||
10383 | cleanup: | |
10384 | gfc_free_array_spec (current_as); | |
10385 | current_as = NULL; | |
10386 | return m; | |
10387 | ||
10388 | } | |
10389 | ||
e449e4dd | 10390 | |
7fd88f6e | 10391 | /* Match binding attributes. */ |
10392 | ||
10393 | static match | |
64e93293 | 10394 | match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc) |
7fd88f6e | 10395 | { |
10396 | bool found_passing = false; | |
64e93293 | 10397 | bool seen_ptr = false; |
fe9b08a2 | 10398 | match m = MATCH_YES; |
7fd88f6e | 10399 | |
df084314 | 10400 | /* Initialize to defaults. Do so even before the MATCH_NO check so that in |
7fd88f6e | 10401 | this case the defaults are in there. */ |
10402 | ba->access = ACCESS_UNKNOWN; | |
10403 | ba->pass_arg = NULL; | |
10404 | ba->pass_arg_num = 0; | |
10405 | ba->nopass = 0; | |
10406 | ba->non_overridable = 0; | |
61c3b81d | 10407 | ba->deferred = 0; |
fe9b08a2 | 10408 | ba->ppc = ppc; |
7fd88f6e | 10409 | |
10410 | /* If we find a comma, we believe there are binding attributes. */ | |
fe9b08a2 | 10411 | m = gfc_match_char (','); |
10412 | if (m == MATCH_NO) | |
10413 | goto done; | |
7fd88f6e | 10414 | |
10415 | do | |
10416 | { | |
e2f06a48 | 10417 | /* Access specifier. */ |
10418 | ||
10419 | m = gfc_match (" public"); | |
7fd88f6e | 10420 | if (m == MATCH_ERROR) |
10421 | goto error; | |
10422 | if (m == MATCH_YES) | |
10423 | { | |
e2f06a48 | 10424 | if (ba->access != ACCESS_UNKNOWN) |
7fd88f6e | 10425 | { |
e2f06a48 | 10426 | gfc_error ("Duplicate access-specifier at %C"); |
7fd88f6e | 10427 | goto error; |
10428 | } | |
10429 | ||
e2f06a48 | 10430 | ba->access = ACCESS_PUBLIC; |
7fd88f6e | 10431 | continue; |
10432 | } | |
10433 | ||
e2f06a48 | 10434 | m = gfc_match (" private"); |
7fd88f6e | 10435 | if (m == MATCH_ERROR) |
10436 | goto error; | |
10437 | if (m == MATCH_YES) | |
10438 | { | |
e2f06a48 | 10439 | if (ba->access != ACCESS_UNKNOWN) |
7fd88f6e | 10440 | { |
e2f06a48 | 10441 | gfc_error ("Duplicate access-specifier at %C"); |
7fd88f6e | 10442 | goto error; |
10443 | } | |
10444 | ||
e2f06a48 | 10445 | ba->access = ACCESS_PRIVATE; |
7fd88f6e | 10446 | continue; |
10447 | } | |
10448 | ||
e2f06a48 | 10449 | /* If inside GENERIC, the following is not allowed. */ |
10450 | if (!generic) | |
7fd88f6e | 10451 | { |
7fd88f6e | 10452 | |
e2f06a48 | 10453 | /* NOPASS flag. */ |
10454 | m = gfc_match (" nopass"); | |
10455 | if (m == MATCH_ERROR) | |
10456 | goto error; | |
10457 | if (m == MATCH_YES) | |
7fd88f6e | 10458 | { |
e2f06a48 | 10459 | if (found_passing) |
10460 | { | |
10461 | gfc_error ("Binding attributes already specify passing," | |
10462 | " illegal NOPASS at %C"); | |
10463 | goto error; | |
10464 | } | |
10465 | ||
10466 | found_passing = true; | |
10467 | ba->nopass = 1; | |
10468 | continue; | |
7fd88f6e | 10469 | } |
10470 | ||
e2f06a48 | 10471 | /* PASS possibly including argument. */ |
10472 | m = gfc_match (" pass"); | |
10473 | if (m == MATCH_ERROR) | |
10474 | goto error; | |
10475 | if (m == MATCH_YES) | |
7fd88f6e | 10476 | { |
e2f06a48 | 10477 | char arg[GFC_MAX_SYMBOL_LEN + 1]; |
10478 | ||
10479 | if (found_passing) | |
10480 | { | |
10481 | gfc_error ("Binding attributes already specify passing," | |
10482 | " illegal PASS at %C"); | |
10483 | goto error; | |
10484 | } | |
10485 | ||
10486 | m = gfc_match (" ( %n )", arg); | |
10487 | if (m == MATCH_ERROR) | |
10488 | goto error; | |
10489 | if (m == MATCH_YES) | |
dc326dc0 | 10490 | ba->pass_arg = gfc_get_string ("%s", arg); |
e2f06a48 | 10491 | gcc_assert ((m == MATCH_YES) == (ba->pass_arg != NULL)); |
10492 | ||
10493 | found_passing = true; | |
10494 | ba->nopass = 0; | |
10495 | continue; | |
7fd88f6e | 10496 | } |
10497 | ||
64e93293 | 10498 | if (ppc) |
10499 | { | |
10500 | /* POINTER flag. */ | |
10501 | m = gfc_match (" pointer"); | |
10502 | if (m == MATCH_ERROR) | |
10503 | goto error; | |
10504 | if (m == MATCH_YES) | |
10505 | { | |
10506 | if (seen_ptr) | |
10507 | { | |
10508 | gfc_error ("Duplicate POINTER attribute at %C"); | |
10509 | goto error; | |
10510 | } | |
10511 | ||
10512 | seen_ptr = true; | |
64e93293 | 10513 | continue; |
10514 | } | |
10515 | } | |
10516 | else | |
10517 | { | |
10518 | /* NON_OVERRIDABLE flag. */ | |
10519 | m = gfc_match (" non_overridable"); | |
10520 | if (m == MATCH_ERROR) | |
10521 | goto error; | |
10522 | if (m == MATCH_YES) | |
10523 | { | |
10524 | if (ba->non_overridable) | |
10525 | { | |
10526 | gfc_error ("Duplicate NON_OVERRIDABLE at %C"); | |
10527 | goto error; | |
10528 | } | |
10529 | ||
10530 | ba->non_overridable = 1; | |
10531 | continue; | |
10532 | } | |
10533 | ||
10534 | /* DEFERRED flag. */ | |
10535 | m = gfc_match (" deferred"); | |
10536 | if (m == MATCH_ERROR) | |
10537 | goto error; | |
10538 | if (m == MATCH_YES) | |
10539 | { | |
10540 | if (ba->deferred) | |
10541 | { | |
10542 | gfc_error ("Duplicate DEFERRED at %C"); | |
10543 | goto error; | |
10544 | } | |
10545 | ||
10546 | ba->deferred = 1; | |
10547 | continue; | |
10548 | } | |
10549 | } | |
10550 | ||
7fd88f6e | 10551 | } |
10552 | ||
10553 | /* Nothing matching found. */ | |
e2f06a48 | 10554 | if (generic) |
10555 | gfc_error ("Expected access-specifier at %C"); | |
10556 | else | |
10557 | gfc_error ("Expected binding attribute at %C"); | |
7fd88f6e | 10558 | goto error; |
10559 | } | |
10560 | while (gfc_match_char (',') == MATCH_YES); | |
10561 | ||
61c3b81d | 10562 | /* NON_OVERRIDABLE and DEFERRED exclude themselves. */ |
10563 | if (ba->non_overridable && ba->deferred) | |
10564 | { | |
10565 | gfc_error ("NON_OVERRIDABLE and DEFERRED can't both appear at %C"); | |
10566 | goto error; | |
10567 | } | |
10568 | ||
fe9b08a2 | 10569 | m = MATCH_YES; |
10570 | ||
10571 | done: | |
e2f06a48 | 10572 | if (ba->access == ACCESS_UNKNOWN) |
c41ff969 | 10573 | ba->access = ppc ? gfc_current_block()->component_access |
10574 | : gfc_typebound_default_access; | |
e2f06a48 | 10575 | |
64e93293 | 10576 | if (ppc && !seen_ptr) |
10577 | { | |
10578 | gfc_error ("POINTER attribute is required for procedure pointer component" | |
10579 | " at %C"); | |
10580 | goto error; | |
10581 | } | |
10582 | ||
fe9b08a2 | 10583 | return m; |
7fd88f6e | 10584 | |
10585 | error: | |
7fd88f6e | 10586 | return MATCH_ERROR; |
10587 | } | |
10588 | ||
10589 | ||
10590 | /* Match a PROCEDURE specific binding inside a derived type. */ | |
10591 | ||
10592 | static match | |
10593 | match_procedure_in_type (void) | |
10594 | { | |
10595 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10596 | char target_buf[GFC_MAX_SYMBOL_LEN + 1]; | |
7a3aaef8 | 10597 | char* target = NULL, *ifc = NULL; |
4a12b9ba | 10598 | gfc_typebound_proc tb; |
7fd88f6e | 10599 | bool seen_colons; |
10600 | bool seen_attrs; | |
10601 | match m; | |
10602 | gfc_symtree* stree; | |
10603 | gfc_namespace* ns; | |
10604 | gfc_symbol* block; | |
7a3aaef8 | 10605 | int num; |
7fd88f6e | 10606 | |
10607 | /* Check current state. */ | |
10608 | gcc_assert (gfc_state_stack->state == COMP_DERIVED_CONTAINS); | |
10609 | block = gfc_state_stack->previous->sym; | |
10610 | gcc_assert (block); | |
10611 | ||
61c3b81d | 10612 | /* Try to match PROCEDURE(interface). */ |
7fd88f6e | 10613 | if (gfc_match (" (") == MATCH_YES) |
10614 | { | |
61c3b81d | 10615 | m = gfc_match_name (target_buf); |
10616 | if (m == MATCH_ERROR) | |
10617 | return m; | |
10618 | if (m != MATCH_YES) | |
10619 | { | |
0d2b3c9c | 10620 | gfc_error ("Interface-name expected after %<(%> at %C"); |
61c3b81d | 10621 | return MATCH_ERROR; |
10622 | } | |
10623 | ||
10624 | if (gfc_match (" )") != MATCH_YES) | |
10625 | { | |
0d2b3c9c | 10626 | gfc_error ("%<)%> expected at %C"); |
61c3b81d | 10627 | return MATCH_ERROR; |
10628 | } | |
10629 | ||
7a3aaef8 | 10630 | ifc = target_buf; |
7fd88f6e | 10631 | } |
10632 | ||
10633 | /* Construct the data structure. */ | |
b3d1387f | 10634 | memset (&tb, 0, sizeof (tb)); |
4a12b9ba | 10635 | tb.where = gfc_current_locus; |
7fd88f6e | 10636 | |
10637 | /* Match binding attributes. */ | |
4a12b9ba | 10638 | m = match_binding_attributes (&tb, false, false); |
7fd88f6e | 10639 | if (m == MATCH_ERROR) |
10640 | return m; | |
10641 | seen_attrs = (m == MATCH_YES); | |
10642 | ||
7a3aaef8 | 10643 | /* Check that attribute DEFERRED is given if an interface is specified. */ |
4a12b9ba | 10644 | if (tb.deferred && !ifc) |
61c3b81d | 10645 | { |
10646 | gfc_error ("Interface must be specified for DEFERRED binding at %C"); | |
10647 | return MATCH_ERROR; | |
10648 | } | |
4a12b9ba | 10649 | if (ifc && !tb.deferred) |
61c3b81d | 10650 | { |
10651 | gfc_error ("PROCEDURE(interface) at %C should be declared DEFERRED"); | |
10652 | return MATCH_ERROR; | |
10653 | } | |
10654 | ||
7fd88f6e | 10655 | /* Match the colons. */ |
10656 | m = gfc_match (" ::"); | |
10657 | if (m == MATCH_ERROR) | |
10658 | return m; | |
10659 | seen_colons = (m == MATCH_YES); | |
10660 | if (seen_attrs && !seen_colons) | |
10661 | { | |
0d2b3c9c | 10662 | gfc_error ("Expected %<::%> after binding-attributes at %C"); |
7fd88f6e | 10663 | return MATCH_ERROR; |
10664 | } | |
10665 | ||
8db94b3b | 10666 | /* Match the binding names. */ |
7a3aaef8 | 10667 | for(num=1;;num++) |
7fd88f6e | 10668 | { |
7a3aaef8 | 10669 | m = gfc_match_name (name); |
10670 | if (m == MATCH_ERROR) | |
10671 | return m; | |
10672 | if (m == MATCH_NO) | |
61c3b81d | 10673 | { |
7a3aaef8 | 10674 | gfc_error ("Expected binding name at %C"); |
61c3b81d | 10675 | return MATCH_ERROR; |
10676 | } | |
10677 | ||
60e19868 | 10678 | if (num>1 && !gfc_notify_std (GFC_STD_F2008, "PROCEDURE list at %C")) |
7a3aaef8 | 10679 | return MATCH_ERROR; |
7fd88f6e | 10680 | |
7a3aaef8 | 10681 | /* Try to match the '=> target', if it's there. */ |
10682 | target = ifc; | |
10683 | m = gfc_match (" =>"); | |
7fd88f6e | 10684 | if (m == MATCH_ERROR) |
10685 | return m; | |
7a3aaef8 | 10686 | if (m == MATCH_YES) |
7fd88f6e | 10687 | { |
4a12b9ba | 10688 | if (tb.deferred) |
7a3aaef8 | 10689 | { |
0d2b3c9c | 10690 | gfc_error ("%<=> target%> is invalid for DEFERRED binding at %C"); |
7a3aaef8 | 10691 | return MATCH_ERROR; |
10692 | } | |
10693 | ||
10694 | if (!seen_colons) | |
10695 | { | |
0d2b3c9c | 10696 | gfc_error ("%<::%> needed in PROCEDURE binding with explicit target" |
7a3aaef8 | 10697 | " at %C"); |
10698 | return MATCH_ERROR; | |
10699 | } | |
10700 | ||
10701 | m = gfc_match_name (target_buf); | |
10702 | if (m == MATCH_ERROR) | |
10703 | return m; | |
10704 | if (m == MATCH_NO) | |
10705 | { | |
0d2b3c9c | 10706 | gfc_error ("Expected binding target after %<=>%> at %C"); |
7a3aaef8 | 10707 | return MATCH_ERROR; |
10708 | } | |
10709 | target = target_buf; | |
7fd88f6e | 10710 | } |
7fd88f6e | 10711 | |
7a3aaef8 | 10712 | /* If no target was found, it has the same name as the binding. */ |
10713 | if (!target) | |
10714 | target = name; | |
7fd88f6e | 10715 | |
7a3aaef8 | 10716 | /* Get the namespace to insert the symbols into. */ |
10717 | ns = block->f2k_derived; | |
10718 | gcc_assert (ns); | |
7fd88f6e | 10719 | |
7a3aaef8 | 10720 | /* If the binding is DEFERRED, check that the containing type is ABSTRACT. */ |
4a12b9ba | 10721 | if (tb.deferred && !block->attr.abstract) |
7a3aaef8 | 10722 | { |
716da296 | 10723 | gfc_error ("Type %qs containing DEFERRED binding at %C " |
7a3aaef8 | 10724 | "is not ABSTRACT", block->name); |
10725 | return MATCH_ERROR; | |
10726 | } | |
7fd88f6e | 10727 | |
7a3aaef8 | 10728 | /* See if we already have a binding with this name in the symtree which |
9834e1b6 | 10729 | would be an error. If a GENERIC already targeted this binding, it may |
7a3aaef8 | 10730 | be already there but then typebound is still NULL. */ |
10731 | stree = gfc_find_symtree (ns->tb_sym_root, name); | |
e204cb62 | 10732 | if (stree && stree->n.tb) |
7a3aaef8 | 10733 | { |
716da296 | 10734 | gfc_error ("There is already a procedure with binding name %qs for " |
10735 | "the derived type %qs at %C", name, block->name); | |
7a3aaef8 | 10736 | return MATCH_ERROR; |
10737 | } | |
61c3b81d | 10738 | |
7a3aaef8 | 10739 | /* Insert it and set attributes. */ |
7fd88f6e | 10740 | |
e204cb62 | 10741 | if (!stree) |
10742 | { | |
10743 | stree = gfc_new_symtree (&ns->tb_sym_root, name); | |
10744 | gcc_assert (stree); | |
10745 | } | |
4a12b9ba | 10746 | stree->n.tb = gfc_get_typebound_proc (&tb); |
3323e9b1 | 10747 | |
4a12b9ba | 10748 | if (gfc_get_sym_tree (target, gfc_current_ns, &stree->n.tb->u.specific, |
10749 | false)) | |
7a3aaef8 | 10750 | return MATCH_ERROR; |
4a12b9ba | 10751 | gfc_set_sym_referenced (stree->n.tb->u.specific->n.sym); |
1f302f2e | 10752 | gfc_add_flavor(&stree->n.tb->u.specific->n.sym->attr, FL_PROCEDURE, |
10753 | target, &stree->n.tb->u.specific->n.sym->declared_at); | |
8db94b3b | 10754 | |
7a3aaef8 | 10755 | if (gfc_match_eos () == MATCH_YES) |
10756 | return MATCH_YES; | |
10757 | if (gfc_match_char (',') != MATCH_YES) | |
10758 | goto syntax; | |
3323e9b1 | 10759 | } |
7fd88f6e | 10760 | |
7a3aaef8 | 10761 | syntax: |
10762 | gfc_error ("Syntax error in PROCEDURE statement at %C"); | |
10763 | return MATCH_ERROR; | |
7fd88f6e | 10764 | } |
10765 | ||
10766 | ||
e2f06a48 | 10767 | /* Match a GENERIC procedure binding inside a derived type. */ |
10768 | ||
10769 | match | |
10770 | gfc_match_generic (void) | |
10771 | { | |
10772 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
a36eb9ee | 10773 | char bind_name[GFC_MAX_SYMBOL_LEN + 16]; /* Allow space for OPERATOR(...). */ |
e2f06a48 | 10774 | gfc_symbol* block; |
10775 | gfc_typebound_proc tbattr; /* Used for match_binding_attributes. */ | |
10776 | gfc_typebound_proc* tb; | |
e2f06a48 | 10777 | gfc_namespace* ns; |
a36eb9ee | 10778 | interface_type op_type; |
10779 | gfc_intrinsic_op op; | |
e2f06a48 | 10780 | match m; |
10781 | ||
10782 | /* Check current state. */ | |
10783 | if (gfc_current_state () == COMP_DERIVED) | |
10784 | { | |
10785 | gfc_error ("GENERIC at %C must be inside a derived-type CONTAINS"); | |
10786 | return MATCH_ERROR; | |
10787 | } | |
10788 | if (gfc_current_state () != COMP_DERIVED_CONTAINS) | |
10789 | return MATCH_NO; | |
10790 | block = gfc_state_stack->previous->sym; | |
10791 | ns = block->f2k_derived; | |
10792 | gcc_assert (block && ns); | |
10793 | ||
b3d1387f | 10794 | memset (&tbattr, 0, sizeof (tbattr)); |
10795 | tbattr.where = gfc_current_locus; | |
10796 | ||
e2f06a48 | 10797 | /* See if we get an access-specifier. */ |
64e93293 | 10798 | m = match_binding_attributes (&tbattr, true, false); |
e2f06a48 | 10799 | if (m == MATCH_ERROR) |
10800 | goto error; | |
10801 | ||
10802 | /* Now the colons, those are required. */ | |
10803 | if (gfc_match (" ::") != MATCH_YES) | |
10804 | { | |
0d2b3c9c | 10805 | gfc_error ("Expected %<::%> at %C"); |
e2f06a48 | 10806 | goto error; |
10807 | } | |
10808 | ||
a36eb9ee | 10809 | /* Match the binding name; depending on type (operator / generic) format |
10810 | it for future error messages into bind_name. */ | |
8db94b3b | 10811 | |
a36eb9ee | 10812 | m = gfc_match_generic_spec (&op_type, name, &op); |
e2f06a48 | 10813 | if (m == MATCH_ERROR) |
10814 | return MATCH_ERROR; | |
10815 | if (m == MATCH_NO) | |
10816 | { | |
a36eb9ee | 10817 | gfc_error ("Expected generic name or operator descriptor at %C"); |
e2f06a48 | 10818 | goto error; |
10819 | } | |
10820 | ||
a36eb9ee | 10821 | switch (op_type) |
e2f06a48 | 10822 | { |
a36eb9ee | 10823 | case INTERFACE_GENERIC: |
9f732c4e | 10824 | case INTERFACE_DTIO: |
a36eb9ee | 10825 | snprintf (bind_name, sizeof (bind_name), "%s", name); |
10826 | break; | |
8db94b3b | 10827 | |
a36eb9ee | 10828 | case INTERFACE_USER_OP: |
10829 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(.%s.)", name); | |
10830 | break; | |
8db94b3b | 10831 | |
a36eb9ee | 10832 | case INTERFACE_INTRINSIC_OP: |
10833 | snprintf (bind_name, sizeof (bind_name), "OPERATOR(%s)", | |
10834 | gfc_op2string (op)); | |
10835 | break; | |
10836 | ||
7e8f55c1 | 10837 | case INTERFACE_NAMELESS: |
10838 | gfc_error ("Malformed GENERIC statement at %C"); | |
10839 | goto error; | |
10840 | break; | |
10841 | ||
a36eb9ee | 10842 | default: |
10843 | gcc_unreachable (); | |
10844 | } | |
3323e9b1 | 10845 | |
a36eb9ee | 10846 | /* Match the required =>. */ |
10847 | if (gfc_match (" =>") != MATCH_YES) | |
10848 | { | |
0d2b3c9c | 10849 | gfc_error ("Expected %<=>%> at %C"); |
a36eb9ee | 10850 | goto error; |
10851 | } | |
8db94b3b | 10852 | |
a36eb9ee | 10853 | /* Try to find existing GENERIC binding with this name / for this operator; |
10854 | if there is something, check that it is another GENERIC and then extend | |
10855 | it rather than building a new node. Otherwise, create it and put it | |
10856 | at the right position. */ | |
10857 | ||
10858 | switch (op_type) | |
10859 | { | |
9f732c4e | 10860 | case INTERFACE_DTIO: |
a36eb9ee | 10861 | case INTERFACE_USER_OP: |
10862 | case INTERFACE_GENERIC: | |
10863 | { | |
10864 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
10865 | gfc_symtree* st; | |
10866 | ||
10867 | st = gfc_find_symtree (is_op ? ns->tb_uop_root : ns->tb_sym_root, name); | |
f7b2c82b | 10868 | tb = st ? st->n.tb : NULL; |
a36eb9ee | 10869 | break; |
10870 | } | |
10871 | ||
10872 | case INTERFACE_INTRINSIC_OP: | |
10873 | tb = ns->tb_op[op]; | |
10874 | break; | |
10875 | ||
10876 | default: | |
10877 | gcc_unreachable (); | |
10878 | } | |
10879 | ||
10880 | if (tb) | |
10881 | { | |
3323e9b1 | 10882 | if (!tb->is_generic) |
e2f06a48 | 10883 | { |
a36eb9ee | 10884 | gcc_assert (op_type == INTERFACE_GENERIC); |
e2f06a48 | 10885 | gfc_error ("There's already a non-generic procedure with binding name" |
716da296 | 10886 | " %qs for the derived type %qs at %C", |
a36eb9ee | 10887 | bind_name, block->name); |
e2f06a48 | 10888 | goto error; |
10889 | } | |
10890 | ||
e2f06a48 | 10891 | if (tb->access != tbattr.access) |
10892 | { | |
10893 | gfc_error ("Binding at %C must have the same access as already" | |
716da296 | 10894 | " defined binding %qs", bind_name); |
e2f06a48 | 10895 | goto error; |
10896 | } | |
10897 | } | |
10898 | else | |
10899 | { | |
4a12b9ba | 10900 | tb = gfc_get_typebound_proc (NULL); |
e2f06a48 | 10901 | tb->where = gfc_current_locus; |
10902 | tb->access = tbattr.access; | |
10903 | tb->is_generic = 1; | |
10904 | tb->u.generic = NULL; | |
a36eb9ee | 10905 | |
10906 | switch (op_type) | |
10907 | { | |
9f732c4e | 10908 | case INTERFACE_DTIO: |
a36eb9ee | 10909 | case INTERFACE_GENERIC: |
10910 | case INTERFACE_USER_OP: | |
10911 | { | |
10912 | const bool is_op = (op_type == INTERFACE_USER_OP); | |
f7b2c82b | 10913 | gfc_symtree* st = gfc_get_tbp_symtree (is_op ? &ns->tb_uop_root : |
10914 | &ns->tb_sym_root, name); | |
a36eb9ee | 10915 | gcc_assert (st); |
10916 | st->n.tb = tb; | |
10917 | ||
10918 | break; | |
10919 | } | |
8db94b3b | 10920 | |
a36eb9ee | 10921 | case INTERFACE_INTRINSIC_OP: |
10922 | ns->tb_op[op] = tb; | |
10923 | break; | |
10924 | ||
10925 | default: | |
10926 | gcc_unreachable (); | |
10927 | } | |
e2f06a48 | 10928 | } |
10929 | ||
10930 | /* Now, match all following names as specific targets. */ | |
10931 | do | |
10932 | { | |
10933 | gfc_symtree* target_st; | |
10934 | gfc_tbp_generic* target; | |
10935 | ||
10936 | m = gfc_match_name (name); | |
10937 | if (m == MATCH_ERROR) | |
10938 | goto error; | |
10939 | if (m == MATCH_NO) | |
10940 | { | |
10941 | gfc_error ("Expected specific binding name at %C"); | |
10942 | goto error; | |
10943 | } | |
10944 | ||
3323e9b1 | 10945 | target_st = gfc_get_tbp_symtree (&ns->tb_sym_root, name); |
e2f06a48 | 10946 | |
10947 | /* See if this is a duplicate specification. */ | |
10948 | for (target = tb->u.generic; target; target = target->next) | |
10949 | if (target_st == target->specific_st) | |
10950 | { | |
716da296 | 10951 | gfc_error ("%qs already defined as specific binding for the" |
10952 | " generic %qs at %C", name, bind_name); | |
e2f06a48 | 10953 | goto error; |
10954 | } | |
10955 | ||
e2f06a48 | 10956 | target = gfc_get_tbp_generic (); |
10957 | target->specific_st = target_st; | |
10958 | target->specific = NULL; | |
10959 | target->next = tb->u.generic; | |
5c0f7d99 | 10960 | target->is_operator = ((op_type == INTERFACE_USER_OP) |
10961 | || (op_type == INTERFACE_INTRINSIC_OP)); | |
e2f06a48 | 10962 | tb->u.generic = target; |
10963 | } | |
10964 | while (gfc_match (" ,") == MATCH_YES); | |
10965 | ||
10966 | /* Here should be the end. */ | |
10967 | if (gfc_match_eos () != MATCH_YES) | |
10968 | { | |
10969 | gfc_error ("Junk after GENERIC binding at %C"); | |
10970 | goto error; | |
10971 | } | |
10972 | ||
10973 | return MATCH_YES; | |
10974 | ||
10975 | error: | |
10976 | return MATCH_ERROR; | |
10977 | } | |
10978 | ||
10979 | ||
223f0f57 | 10980 | /* Match a FINAL declaration inside a derived type. */ |
10981 | ||
10982 | match | |
10983 | gfc_match_final_decl (void) | |
10984 | { | |
10985 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
10986 | gfc_symbol* sym; | |
10987 | match m; | |
10988 | gfc_namespace* module_ns; | |
10989 | bool first, last; | |
7fd88f6e | 10990 | gfc_symbol* block; |
223f0f57 | 10991 | |
519651c1 | 10992 | if (gfc_current_form == FORM_FREE) |
10993 | { | |
10994 | char c = gfc_peek_ascii_char (); | |
10995 | if (!gfc_is_whitespace (c) && c != ':') | |
10996 | return MATCH_NO; | |
10997 | } | |
8db94b3b | 10998 | |
7fd88f6e | 10999 | if (gfc_state_stack->state != COMP_DERIVED_CONTAINS) |
223f0f57 | 11000 | { |
519651c1 | 11001 | if (gfc_current_form == FORM_FIXED) |
11002 | return MATCH_NO; | |
11003 | ||
223f0f57 | 11004 | gfc_error ("FINAL declaration at %C must be inside a derived type " |
7fd88f6e | 11005 | "CONTAINS section"); |
223f0f57 | 11006 | return MATCH_ERROR; |
11007 | } | |
11008 | ||
7fd88f6e | 11009 | block = gfc_state_stack->previous->sym; |
11010 | gcc_assert (block); | |
223f0f57 | 11011 | |
7fd88f6e | 11012 | if (!gfc_state_stack->previous || !gfc_state_stack->previous->previous |
11013 | || gfc_state_stack->previous->previous->state != COMP_MODULE) | |
223f0f57 | 11014 | { |
11015 | gfc_error ("Derived type declaration with FINAL at %C must be in the" | |
11016 | " specification part of a MODULE"); | |
11017 | return MATCH_ERROR; | |
11018 | } | |
11019 | ||
11020 | module_ns = gfc_current_ns; | |
11021 | gcc_assert (module_ns); | |
11022 | gcc_assert (module_ns->proc_name->attr.flavor == FL_MODULE); | |
11023 | ||
11024 | /* Match optional ::, don't care about MATCH_YES or MATCH_NO. */ | |
11025 | if (gfc_match (" ::") == MATCH_ERROR) | |
11026 | return MATCH_ERROR; | |
11027 | ||
11028 | /* Match the sequence of procedure names. */ | |
11029 | first = true; | |
11030 | last = false; | |
11031 | do | |
11032 | { | |
11033 | gfc_finalizer* f; | |
11034 | ||
11035 | if (first && gfc_match_eos () == MATCH_YES) | |
11036 | { | |
11037 | gfc_error ("Empty FINAL at %C"); | |
11038 | return MATCH_ERROR; | |
11039 | } | |
11040 | ||
11041 | m = gfc_match_name (name); | |
11042 | if (m == MATCH_NO) | |
11043 | { | |
11044 | gfc_error ("Expected module procedure name at %C"); | |
11045 | return MATCH_ERROR; | |
11046 | } | |
11047 | else if (m != MATCH_YES) | |
11048 | return MATCH_ERROR; | |
11049 | ||
11050 | if (gfc_match_eos () == MATCH_YES) | |
11051 | last = true; | |
11052 | if (!last && gfc_match_char (',') != MATCH_YES) | |
11053 | { | |
0d2b3c9c | 11054 | gfc_error ("Expected %<,%> at %C"); |
223f0f57 | 11055 | return MATCH_ERROR; |
11056 | } | |
11057 | ||
11058 | if (gfc_get_symbol (name, module_ns, &sym)) | |
11059 | { | |
716da296 | 11060 | gfc_error ("Unknown procedure name %qs at %C", name); |
223f0f57 | 11061 | return MATCH_ERROR; |
11062 | } | |
11063 | ||
11064 | /* Mark the symbol as module procedure. */ | |
11065 | if (sym->attr.proc != PROC_MODULE | |
60e19868 | 11066 | && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL)) |
223f0f57 | 11067 | return MATCH_ERROR; |
11068 | ||
11069 | /* Check if we already have this symbol in the list, this is an error. */ | |
7fd88f6e | 11070 | for (f = block->f2k_derived->finalizers; f; f = f->next) |
e449e4dd | 11071 | if (f->proc_sym == sym) |
223f0f57 | 11072 | { |
c2a4993a | 11073 | gfc_error ("%qs at %C is already defined as FINAL procedure", |
223f0f57 | 11074 | name); |
11075 | return MATCH_ERROR; | |
11076 | } | |
11077 | ||
11078 | /* Add this symbol to the list of finalizers. */ | |
7fd88f6e | 11079 | gcc_assert (block->f2k_derived); |
c77c84dd | 11080 | sym->refs++; |
48d8ad5a | 11081 | f = XCNEW (gfc_finalizer); |
e449e4dd | 11082 | f->proc_sym = sym; |
11083 | f->proc_tree = NULL; | |
223f0f57 | 11084 | f->where = gfc_current_locus; |
7fd88f6e | 11085 | f->next = block->f2k_derived->finalizers; |
11086 | block->f2k_derived->finalizers = f; | |
223f0f57 | 11087 | |
11088 | first = false; | |
11089 | } | |
11090 | while (!last); | |
11091 | ||
11092 | return MATCH_YES; | |
11093 | } | |
36b0a1b0 | 11094 | |
11095 | ||
11096 | const ext_attr_t ext_attr_list[] = { | |
fa76a552 | 11097 | { "dllimport", EXT_ATTR_DLLIMPORT, "dllimport" }, |
11098 | { "dllexport", EXT_ATTR_DLLEXPORT, "dllexport" }, | |
11099 | { "cdecl", EXT_ATTR_CDECL, "cdecl" }, | |
11100 | { "stdcall", EXT_ATTR_STDCALL, "stdcall" }, | |
11101 | { "fastcall", EXT_ATTR_FASTCALL, "fastcall" }, | |
11102 | { "no_arg_check", EXT_ATTR_NO_ARG_CHECK, NULL }, | |
11103 | { NULL, EXT_ATTR_LAST, NULL } | |
36b0a1b0 | 11104 | }; |
11105 | ||
11106 | /* Match a !GCC$ ATTRIBUTES statement of the form: | |
11107 | !GCC$ ATTRIBUTES attribute-list :: var-name [, var-name] ... | |
11108 | When we come here, we have already matched the !GCC$ ATTRIBUTES string. | |
11109 | ||
11110 | TODO: We should support all GCC attributes using the same syntax for | |
11111 | the attribute list, i.e. the list in C | |
11112 | __attributes(( attribute-list )) | |
11113 | matches then | |
11114 | !GCC$ ATTRIBUTES attribute-list :: | |
11115 | Cf. c-parser.c's c_parser_attributes; the data can then directly be | |
11116 | saved into a TREE. | |
11117 | ||
11118 | As there is absolutely no risk of confusion, we should never return | |
11119 | MATCH_NO. */ | |
11120 | match | |
11121 | gfc_match_gcc_attributes (void) | |
8db94b3b | 11122 | { |
36b0a1b0 | 11123 | symbol_attribute attr; |
11124 | char name[GFC_MAX_SYMBOL_LEN + 1]; | |
11125 | unsigned id; | |
11126 | gfc_symbol *sym; | |
11127 | match m; | |
11128 | ||
11129 | gfc_clear_attr (&attr); | |
11130 | for(;;) | |
11131 | { | |
11132 | char ch; | |
11133 | ||
11134 | if (gfc_match_name (name) != MATCH_YES) | |
11135 | return MATCH_ERROR; | |
11136 | ||
11137 | for (id = 0; id < EXT_ATTR_LAST; id++) | |
11138 | if (strcmp (name, ext_attr_list[id].name) == 0) | |
11139 | break; | |
11140 | ||
11141 | if (id == EXT_ATTR_LAST) | |
11142 | { | |
11143 | gfc_error ("Unknown attribute in !GCC$ ATTRIBUTES statement at %C"); | |
11144 | return MATCH_ERROR; | |
11145 | } | |
11146 | ||
60e19868 | 11147 | if (!gfc_add_ext_attribute (&attr, (ext_attr_id_t)id, &gfc_current_locus)) |
36b0a1b0 | 11148 | return MATCH_ERROR; |
11149 | ||
11150 | gfc_gobble_whitespace (); | |
11151 | ch = gfc_next_ascii_char (); | |
11152 | if (ch == ':') | |
11153 | { | |
11154 | /* This is the successful exit condition for the loop. */ | |
11155 | if (gfc_next_ascii_char () == ':') | |
11156 | break; | |
11157 | } | |
11158 | ||
11159 | if (ch == ',') | |
11160 | continue; | |
11161 | ||
11162 | goto syntax; | |
11163 | } | |
11164 | ||
11165 | if (gfc_match_eos () == MATCH_YES) | |
11166 | goto syntax; | |
11167 | ||
11168 | for(;;) | |
11169 | { | |
11170 | m = gfc_match_name (name); | |
11171 | if (m != MATCH_YES) | |
11172 | return m; | |
11173 | ||
11174 | if (find_special (name, &sym, true)) | |
11175 | return MATCH_ERROR; | |
8db94b3b | 11176 | |
36b0a1b0 | 11177 | sym->attr.ext_attr |= attr.ext_attr; |
11178 | ||
11179 | if (gfc_match_eos () == MATCH_YES) | |
11180 | break; | |
11181 | ||
11182 | if (gfc_match_char (',') != MATCH_YES) | |
11183 | goto syntax; | |
11184 | } | |
11185 | ||
11186 | return MATCH_YES; | |
11187 | ||
11188 | syntax: | |
11189 | gfc_error ("Syntax error in !GCC$ ATTRIBUTES statement at %C"); | |
11190 | return MATCH_ERROR; | |
11191 | } | |
82841c8f | 11192 | |
11193 | ||
11194 | /* Match a !GCC$ UNROLL statement of the form: | |
11195 | !GCC$ UNROLL n | |
11196 | ||
11197 | The parameter n is the number of times we are supposed to unroll. | |
11198 | ||
11199 | When we come here, we have already matched the !GCC$ UNROLL string. */ | |
11200 | match | |
11201 | gfc_match_gcc_unroll (void) | |
11202 | { | |
11203 | int value; | |
11204 | ||
11205 | if (gfc_match_small_int (&value) == MATCH_YES) | |
11206 | { | |
11207 | if (value < 0 || value > USHRT_MAX) | |
11208 | { | |
11209 | gfc_error ("%<GCC unroll%> directive requires a" | |
11210 | " non-negative integral constant" | |
11211 | " less than or equal to %u at %C", | |
11212 | USHRT_MAX | |
11213 | ); | |
11214 | return MATCH_ERROR; | |
11215 | } | |
11216 | if (gfc_match_eos () == MATCH_YES) | |
11217 | { | |
11218 | directive_unroll = value == 0 ? 1 : value; | |
11219 | return MATCH_YES; | |
11220 | } | |
11221 | } | |
11222 | ||
11223 | gfc_error ("Syntax error in !GCC$ UNROLL directive at %C"); | |
11224 | return MATCH_ERROR; | |
11225 | } |